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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771003; x=1717375803; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=XQrV4UMaEBl22gT4Xij+bzAgjXuhBjByp/7UaStu/qs=; b=Hjf8t2TzS7HfCn3W4MkT5uTUQQkEASL3ORQm8fP/iNYIrSUN/FmlrLk4CbhyUT0SWd UNaE99sFYGOA/Tt9FktRzcFh3UcxqfoO9C7sEG8RukQjjMcUcL8z95GzcCiLn5/ULFcy JIV6JWNtAPpubrSVnuH8dVUiYqIwsc3m/rCQXan7sYWxxBeRP79bJr3HfSu08UHMMg70 K0r9rGnvxrY3r3tM1Jj6SuP2jSsfSXgqTd2r0dZM9+6J27rq698q188sjFcsQUvQxvj0 GuozBTS4sUAiiYEJgmwGMqiVnVZ5aEfnhaZr6P2zIjXR3CKmnSrh5QRI3yKFKJuomNZl sZHQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771003; x=1717375803; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=XQrV4UMaEBl22gT4Xij+bzAgjXuhBjByp/7UaStu/qs=; b=GnxU3wjZhvAER4ux+Ezb7u4eXbRx22qynKfKEbwA/5iMu9PEjFwbaE2OXemyj+Vjcl cmQ1MmotH4fyZ4c8Nk3cSwdX5mV2C+kYWDyZXEDlCQSL+gRf4NvfB+SXFu0o4RqNWUQR QRdE95j+z4tcxoJ6wC9HgDlTCD2WO0wW+dvDsy0QI6NA8y3PPd/hBU6iOhlwNfVT/w+7 CxvOLgH+bictrZkh/LxAsvIf3boh6qYI+7PhPZRxPu3v6Ts7G6q7llW8VSZdsTpEOlxW x4cR/Q0C0zLZhttQ5o/RWVo6IjxKHr5P+fslm/s70/3bdo/YXmO5YSnxax84118ZGh1S Mlcg== X-Gm-Message-State: AOJu0Yyz983z5Nprg0pk03EgyS8Q1H7p93iOxXDweazTQNG/1n8bOzrg W4NUmqwZZGX+16SZT/xKbqUawNBO78cLjxdsqwSN2ZkiFx8a9BRei9zKgcV3xDqTmxGxbb6ctI2 J X-Google-Smtp-Source: AGHT+IHDrIobzXa8wXZ1pbgkcgMPfKLQ0jH2r7xPa6m/K5gjT+jYw7xa38L4D7359lvasNSTZpchmw== X-Received: by 2002:a05:6808:144:b0:3c6:efde:7a45 with SMTP id 5614622812f47-3d1a7a2dd0cmr8372080b6e.50.1716771003367; Sun, 26 May 2024 17:50:03 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 01/28] target/i386: Add tcg/access.[ch] Date: Sun, 26 May 2024 17:49:34 -0700 Message-Id: <20240527005001.642825-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::232; envelope-from=richard.henderson@linaro.org; helo=mail-oi1-x232.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771051489100006 Content-Type: text/plain; charset="utf-8" Provide a method to amortize page lookup across large blocks. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/tcg/access.h | 40 +++++++++ target/i386/tcg/access.c | 169 ++++++++++++++++++++++++++++++++++++ target/i386/tcg/meson.build | 1 + 3 files changed, 210 insertions(+) create mode 100644 target/i386/tcg/access.h create mode 100644 target/i386/tcg/access.c diff --git a/target/i386/tcg/access.h b/target/i386/tcg/access.h new file mode 100644 index 0000000000..d70808a3a3 --- /dev/null +++ b/target/i386/tcg/access.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* Access guest memory in blocks. */ + +#ifndef X86_TCG_ACCESS_H +#define X86_TCG_ACCESS_H + +/* An access covers at most sizeof(X86XSaveArea), at most 2 pages. */ +typedef struct X86Access { + target_ulong vaddr; + void *haddr1; + void *haddr2; + uint16_t size; + uint16_t size1; + /* + * If we can't access the host page directly, we'll have to do I/O acc= ess + * via ld/st helpers. These are internal details, so we store the rest + * to do the access here instead of passing it around in the helpers. + */ + int mmu_idx; + CPUX86State *env; + uintptr_t ra; +} X86Access; + +void access_prepare_mmu(X86Access *ret, CPUX86State *env, + vaddr vaddr, unsigned size, + MMUAccessType type, int mmu_idx, uintptr_t ra); +void access_prepare(X86Access *ret, CPUX86State *env, vaddr vaddr, + unsigned size, MMUAccessType type, uintptr_t ra); + +uint8_t access_ldb(X86Access *ac, vaddr addr); +uint16_t access_ldw(X86Access *ac, vaddr addr); +uint32_t access_ldl(X86Access *ac, vaddr addr); +uint64_t access_ldq(X86Access *ac, vaddr addr); + +void access_stb(X86Access *ac, vaddr addr, uint8_t val); +void access_stw(X86Access *ac, vaddr addr, uint16_t val); +void access_stl(X86Access *ac, vaddr addr, uint32_t val); +void access_stq(X86Access *ac, vaddr addr, uint64_t val); + +#endif diff --git a/target/i386/tcg/access.c b/target/i386/tcg/access.c new file mode 100644 index 0000000000..56a1181ea5 --- /dev/null +++ b/target/i386/tcg/access.c @@ -0,0 +1,169 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* Access guest memory in blocks. */ + +#include "qemu/osdep.h" +#include "cpu.h" +#include "exec/cpu_ldst.h" +#include "exec/exec-all.h" +#include "access.h" + + +void access_prepare_mmu(X86Access *ret, CPUX86State *env, + vaddr vaddr, unsigned size, + MMUAccessType type, int mmu_idx, uintptr_t ra) +{ + int size1, size2; + void *haddr1, *haddr2; + + assert(size > 0 && size <=3D TARGET_PAGE_SIZE); + + size1 =3D MIN(size, -(vaddr | TARGET_PAGE_MASK)), + size2 =3D size - size1; + + memset(ret, 0, sizeof(*ret)); + ret->vaddr =3D vaddr; + ret->size =3D size; + ret->size1 =3D size1; + ret->mmu_idx =3D mmu_idx; + ret->env =3D env; + ret->ra =3D ra; + + haddr1 =3D probe_access(env, vaddr, size1, type, mmu_idx, ra); + ret->haddr1 =3D haddr1; + + if (unlikely(size2)) { + haddr2 =3D probe_access(env, vaddr + size1, size2, type, mmu_idx, = ra); + if (haddr2 =3D=3D haddr1 + size1) { + ret->size1 =3D size; + } else { +#ifdef CONFIG_USER_ONLY + g_assert_not_reached(); +#else + ret->haddr2 =3D haddr2; +#endif + } + } +} + +void access_prepare(X86Access *ret, CPUX86State *env, vaddr vaddr, + unsigned size, MMUAccessType type, uintptr_t ra) +{ + int mmu_idx =3D cpu_mmu_index(env_cpu(env), false); + access_prepare_mmu(ret, env, vaddr, size, type, mmu_idx, ra); +} + +static void *access_ptr(X86Access *ac, vaddr addr, unsigned len) +{ + vaddr offset =3D addr - ac->vaddr; + + assert(addr >=3D ac->vaddr); + +#ifdef CONFIG_USER_ONLY + assert(offset <=3D ac->size1 - len); + return ac->haddr1 + offset; +#else + if (likely(offset <=3D ac->size1 - len)) { + return ac->haddr1 + offset; + } + assert(offset <=3D ac->size - len); + /* + * If the address is not naturally aligned, it might span both pages. + * Only return ac->haddr2 if the area is entirely within the second pa= ge, + * otherwise fall back to slow accesses. + */ + if (likely(offset >=3D ac->size1)) { + return ac->haddr2 + (offset - ac->size1); + } + return NULL; +#endif +} + +#ifdef CONFIG_USER_ONLY +# define test_ptr(p) true +#else +# define test_ptr(p) likely(p) +#endif + +uint8_t access_ldb(X86Access *ac, vaddr addr) +{ + void *p =3D access_ptr(ac, addr, sizeof(uint8_t)); + + if (test_ptr(p)) { + return ldub_p(p); + } + return cpu_ldub_mmuidx_ra(ac->env, addr, ac->mmu_idx, ac->ra); +} + +uint16_t access_ldw(X86Access *ac, vaddr addr) +{ + void *p =3D access_ptr(ac, addr, sizeof(uint16_t)); + + if (test_ptr(p)) { + return lduw_le_p(p); + } + return cpu_lduw_le_mmuidx_ra(ac->env, addr, ac->mmu_idx, ac->ra); +} + +uint32_t access_ldl(X86Access *ac, vaddr addr) +{ + void *p =3D access_ptr(ac, addr, sizeof(uint32_t)); + + if (test_ptr(p)) { + return ldl_le_p(p); + } + return cpu_ldl_le_mmuidx_ra(ac->env, addr, ac->mmu_idx, ac->ra); +} + +uint64_t access_ldq(X86Access *ac, vaddr addr) +{ + void *p =3D access_ptr(ac, addr, sizeof(uint64_t)); + + if (test_ptr(p)) { + return ldq_le_p(p); + } + return cpu_ldq_le_mmuidx_ra(ac->env, addr, ac->mmu_idx, ac->ra); +} + +void access_stb(X86Access *ac, vaddr addr, uint8_t val) +{ + void *p =3D access_ptr(ac, addr, sizeof(uint8_t)); + + if (test_ptr(p)) { + stb_p(p, val); + } else { + cpu_stb_mmuidx_ra(ac->env, addr, val, ac->mmu_idx, ac->ra); + } +} + +void access_stw(X86Access *ac, vaddr addr, uint16_t val) +{ + void *p =3D access_ptr(ac, addr, sizeof(uint16_t)); + + if (test_ptr(p)) { + stw_le_p(p, val); + } else { + cpu_stw_le_mmuidx_ra(ac->env, addr, val, ac->mmu_idx, ac->ra); + } +} + +void access_stl(X86Access *ac, vaddr addr, uint32_t val) +{ + void *p =3D access_ptr(ac, addr, sizeof(uint32_t)); + + if (test_ptr(p)) { + stl_le_p(p, val); + } else { + cpu_stl_le_mmuidx_ra(ac->env, addr, val, ac->mmu_idx, ac->ra); + } +} + +void access_stq(X86Access *ac, vaddr addr, uint64_t val) +{ + void *p =3D access_ptr(ac, addr, sizeof(uint64_t)); + + if (test_ptr(p)) { + stq_le_p(p, val); + } else { + cpu_stq_le_mmuidx_ra(ac->env, addr, val, ac->mmu_idx, ac->ra); + } +} diff --git a/target/i386/tcg/meson.build b/target/i386/tcg/meson.build index f9110e890c..1105b35d92 100644 --- a/target/i386/tcg/meson.build +++ b/target/i386/tcg/meson.build @@ -1,4 +1,5 @@ i386_ss.add(when: 'CONFIG_TCG', if_true: files( + 'access.c', 'bpt_helper.c', 'cc_helper.c', 'excp_helper.c', --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::435; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x435.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771129539100003 Content-Type: text/plain; charset="utf-8" Signed-off-by: Richard Henderson --- target/i386/tcg/fpu_helper.c | 44 +++++++++++++++++++++++++----------- 1 file changed, 31 insertions(+), 13 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index ece22a3553..1662643a8f 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -27,6 +27,7 @@ #include "fpu/softfloat.h" #include "fpu/softfloat-macros.h" #include "helper-tcg.h" +#include "access.h" =20 /* float macros */ #define FT0 (env->ft0) @@ -84,23 +85,22 @@ static inline void fpop(CPUX86State *env) env->fpstt =3D (env->fpstt + 1) & 7; } =20 -static floatx80 do_fldt(CPUX86State *env, target_ulong ptr, uintptr_t reta= ddr) +static floatx80 do_fldt(X86Access *ac, target_ulong ptr) { CPU_LDoubleU temp; =20 - temp.l.lower =3D cpu_ldq_data_ra(env, ptr, retaddr); - temp.l.upper =3D cpu_lduw_data_ra(env, ptr + 8, retaddr); + temp.l.lower =3D access_ldq(ac, ptr); + temp.l.upper =3D access_ldw(ac, ptr + 8); return temp.d; } =20 -static void do_fstt(CPUX86State *env, floatx80 f, target_ulong ptr, - uintptr_t retaddr) +static void do_fstt(X86Access *ac, target_ulong ptr, floatx80 f) { CPU_LDoubleU temp; =20 temp.d =3D f; - cpu_stq_data_ra(env, ptr, temp.l.lower, retaddr); - cpu_stw_data_ra(env, ptr + 8, temp.l.upper, retaddr); + access_stq(ac, ptr, temp.l.lower); + access_stw(ac, ptr + 8, temp.l.upper); } =20 /* x87 FPU helpers */ @@ -382,16 +382,22 @@ int64_t helper_fisttll_ST0(CPUX86State *env) void helper_fldt_ST0(CPUX86State *env, target_ulong ptr) { int new_fpstt; + X86Access ac; + + access_prepare(&ac, env, ptr, 10, MMU_DATA_LOAD, GETPC()); =20 new_fpstt =3D (env->fpstt - 1) & 7; - env->fpregs[new_fpstt].d =3D do_fldt(env, ptr, GETPC()); + env->fpregs[new_fpstt].d =3D do_fldt(&ac, ptr); env->fpstt =3D new_fpstt; env->fptags[new_fpstt] =3D 0; /* validate stack entry */ } =20 void helper_fstt_ST0(CPUX86State *env, target_ulong ptr) { - do_fstt(env, ST0, ptr, GETPC()); + X86Access ac; + + access_prepare(&ac, env, ptr, 10, MMU_DATA_STORE, GETPC()); + do_fstt(&ac, ptr, ST0); } =20 void helper_fpush(CPUX86State *env) @@ -2460,15 +2466,18 @@ void helper_fldenv(CPUX86State *env, target_ulong p= tr, int data32) static void do_fsave(CPUX86State *env, target_ulong ptr, int data32, uintptr_t retaddr) { + X86Access ac; floatx80 tmp; int i; =20 do_fstenv(env, ptr, data32, retaddr); =20 ptr +=3D (target_ulong)14 << data32; + access_prepare(&ac, env, ptr, 80, MMU_DATA_STORE, retaddr); + for (i =3D 0; i < 8; i++) { tmp =3D ST(i); - do_fstt(env, tmp, ptr, retaddr); + do_fstt(&ac, ptr, tmp); ptr +=3D 10; } =20 @@ -2483,14 +2492,17 @@ void helper_fsave(CPUX86State *env, target_ulong pt= r, int data32) static void do_frstor(CPUX86State *env, target_ulong ptr, int data32, uintptr_t retaddr) { + X86Access ac; floatx80 tmp; int i; =20 do_fldenv(env, ptr, data32, retaddr); ptr +=3D (target_ulong)14 << data32; =20 + access_prepare(&ac, env, ptr, 80, MMU_DATA_LOAD, retaddr); + for (i =3D 0; i < 8; i++) { - tmp =3D do_fldt(env, ptr, retaddr); + tmp =3D do_fldt(&ac, ptr); ST(i) =3D tmp; ptr +=3D 10; } @@ -2507,6 +2519,7 @@ static void do_xsave_fpu(CPUX86State *env, target_ulo= ng ptr, uintptr_t ra) { int fpus, fptag, i; target_ulong addr; + X86Access ac; =20 fpus =3D (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; fptag =3D 0; @@ -2525,9 +2538,11 @@ static void do_xsave_fpu(CPUX86State *env, target_ul= ong ptr, uintptr_t ra) cpu_stq_data_ra(env, ptr + XO(legacy.fpdp), 0, ra); /* edp+sel; rdp */ =20 addr =3D ptr + XO(legacy.fpregs); + access_prepare(&ac, env, addr, 8 * 16, MMU_DATA_STORE, ra); + for (i =3D 0; i < 8; i++) { floatx80 tmp =3D ST(i); - do_fstt(env, tmp, addr, ra); + do_fstt(&ac, addr, tmp); addr +=3D 16; } } @@ -2700,6 +2715,7 @@ static void do_xrstor_fpu(CPUX86State *env, target_ul= ong ptr, uintptr_t ra) { int i, fpuc, fpus, fptag; target_ulong addr; + X86Access ac; =20 fpuc =3D cpu_lduw_data_ra(env, ptr + XO(legacy.fcw), ra); fpus =3D cpu_lduw_data_ra(env, ptr + XO(legacy.fsw), ra); @@ -2712,8 +2728,10 @@ static void do_xrstor_fpu(CPUX86State *env, target_u= long ptr, uintptr_t ra) } =20 addr =3D ptr + XO(legacy.fpregs); + access_prepare(&ac, env, addr, 8 * 16, MMU_DATA_LOAD, ra); + for (i =3D 0; i < 8; i++) { - floatx80 tmp =3D do_fldt(env, addr, ra); + floatx80 tmp =3D do_fldt(&ac, addr); ST(i) =3D tmp; addr +=3D 16; } --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771069667910.799274423856; Sun, 26 May 2024 17:51:09 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZI-0007AR-Je; 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:04 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771005; x=1717375805; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=65Gkdr7ftr6lyKPmfr51rDrQ5Maa9PeaHdOx7rkPnQ4=; b=X0BMB9D1sPZEruKCW9zHr6aE4QBObc7JhVwqIk5JeuQy33QQ7lhThjgSenfmGb52ll yqQLSL8LB116aoduKIsynKNd1szYIs0NHSKtlIJfIy3hcWBZF2+GRlbh6Ch+X3MUJYt7 yRUsqui3DLIgZKGb9fx7P/OyA6ev2THQQaJvsX3dIklf8VGYTiPfiUK6rzQQFCl4QZhX 2t5P8Tec9FL/yVqojFYYa+owqOKh/k6BzFkYP+YMr6dW19pj8gsdbSD77QcJzshUb7S9 XOXrjr3uxWmqaftXrQF9yyu2A0PfMXHNT+lJ3rAoZITpuwFE9rc4eI3+kIWxXrftr9gr oFgw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771005; x=1717375805; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:4860:4864:20::2d; envelope-from=richard.henderson@linaro.org; helo=mail-oa1-x2d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1716771071369100011 Content-Type: text/plain; charset="utf-8" Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/tcg/fpu_helper.c | 25 +++++++++++++++---------- 1 file changed, 15 insertions(+), 10 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index 1662643a8f..6237cd8383 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -773,18 +773,21 @@ void helper_fninit(CPUX86State *env) =20 void helper_fbld_ST0(CPUX86State *env, target_ulong ptr) { + X86Access ac; floatx80 tmp; uint64_t val; unsigned int v; int i; =20 + access_prepare(&ac, env, ptr, 10, MMU_DATA_LOAD, GETPC()); + val =3D 0; for (i =3D 8; i >=3D 0; i--) { - v =3D cpu_ldub_data_ra(env, ptr + i, GETPC()); + v =3D access_ldb(&ac, ptr + i); val =3D (val * 100) + ((v >> 4) * 10) + (v & 0xf); } tmp =3D int64_to_floatx80(val, &env->fp_status); - if (cpu_ldub_data_ra(env, ptr + 9, GETPC()) & 0x80) { + if (access_ldb(&ac, ptr + 9) & 0x80) { tmp =3D floatx80_chs(tmp); } fpush(env); @@ -798,7 +801,9 @@ void helper_fbst_ST0(CPUX86State *env, target_ulong ptr) target_ulong mem_ref, mem_end; int64_t val; CPU_LDoubleU temp; + X86Access ac; =20 + access_prepare(&ac, env, ptr, 10, MMU_DATA_STORE, GETPC()); temp.d =3D ST0; =20 val =3D floatx80_to_int64(ST0, &env->fp_status); @@ -806,20 +811,20 @@ void helper_fbst_ST0(CPUX86State *env, target_ulong p= tr) if (val >=3D 1000000000000000000LL || val <=3D -1000000000000000000LL)= { set_float_exception_flags(float_flag_invalid, &env->fp_status); while (mem_ref < ptr + 7) { - cpu_stb_data_ra(env, mem_ref++, 0, GETPC()); + access_stb(&ac, mem_ref++, 0); } - cpu_stb_data_ra(env, mem_ref++, 0xc0, GETPC()); - cpu_stb_data_ra(env, mem_ref++, 0xff, GETPC()); - cpu_stb_data_ra(env, mem_ref++, 0xff, GETPC()); + access_stb(&ac, mem_ref++, 0xc0); + access_stb(&ac, mem_ref++, 0xff); + access_stb(&ac, mem_ref++, 0xff); merge_exception_flags(env, old_flags); return; } mem_end =3D mem_ref + 9; if (SIGND(temp)) { - cpu_stb_data_ra(env, mem_end, 0x80, GETPC()); + access_stb(&ac, mem_end, 0x80); val =3D -val; } else { - cpu_stb_data_ra(env, mem_end, 0x00, GETPC()); + access_stb(&ac, mem_end, 0x00); } while (mem_ref < mem_end) { if (val =3D=3D 0) { @@ -828,10 +833,10 @@ void helper_fbst_ST0(CPUX86State *env, target_ulong p= tr) v =3D val % 100; val =3D val / 100; v =3D ((v / 10) << 4) | (v % 10); - cpu_stb_data_ra(env, mem_ref++, v, GETPC()); + access_stb(&ac, mem_ref++, v); } while (mem_ref < mem_end) { - cpu_stb_data_ra(env, mem_ref++, 0, GETPC()); + access_stb(&ac, mem_ref++, 0); } merge_exception_flags(env, old_flags); 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::436; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x436.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771135583100001 Content-Type: text/plain; charset="utf-8" Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/tcg/fpu_helper.c | 30 ++++++++++++++---------------- 1 file changed, 14 insertions(+), 16 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index 6237cd8383..5ad6e04639 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -2442,20 +2442,15 @@ static void cpu_set_fpus(CPUX86State *env, uint16_t= fpus) #endif } =20 -static void do_fldenv(CPUX86State *env, target_ulong ptr, int data32, - uintptr_t retaddr) +static void do_fldenv(X86Access *ac, target_ulong ptr, int data32) { int i, fpus, fptag; + CPUX86State *env =3D ac->env; + + cpu_set_fpuc(env, access_ldw(ac, ptr)); + fpus =3D access_ldw(ac, ptr + (2 << data32)); + fptag =3D access_ldw(ac, ptr + (4 << data32)); =20 - if (data32) { - cpu_set_fpuc(env, cpu_lduw_data_ra(env, ptr, retaddr)); - fpus =3D cpu_lduw_data_ra(env, ptr + 4, retaddr); - fptag =3D cpu_lduw_data_ra(env, ptr + 8, retaddr); - } else { - cpu_set_fpuc(env, cpu_lduw_data_ra(env, ptr, retaddr)); - fpus =3D cpu_lduw_data_ra(env, ptr + 2, retaddr); - fptag =3D cpu_lduw_data_ra(env, ptr + 4, retaddr); - } cpu_set_fpus(env, fpus); for (i =3D 0; i < 8; i++) { env->fptags[i] =3D ((fptag & 3) =3D=3D 3); @@ -2465,7 +2460,10 @@ static void do_fldenv(CPUX86State *env, target_ulong= ptr, int data32, =20 void helper_fldenv(CPUX86State *env, target_ulong ptr, int data32) { - do_fldenv(env, ptr, data32, GETPC()); + X86Access ac; + + access_prepare(&ac, env, ptr, 14 << data32, MMU_DATA_STORE, GETPC()); + do_fldenv(&ac, ptr, data32); } =20 static void do_fsave(CPUX86State *env, target_ulong ptr, int data32, @@ -2499,12 +2497,12 @@ static void do_frstor(CPUX86State *env, target_ulon= g ptr, int data32, { X86Access ac; floatx80 tmp; - int i; + int i, envsize =3D 14 << data32; =20 - do_fldenv(env, ptr, data32, retaddr); - ptr +=3D (target_ulong)14 << data32; + access_prepare(&ac, env, ptr, envsize + 80, MMU_DATA_LOAD, retaddr); =20 - access_prepare(&ac, env, ptr, 80, MMU_DATA_LOAD, retaddr); + do_fldenv(&ac, ptr, data32); + ptr +=3D envsize; =20 for (i =3D 0; i < 8; i++) { tmp =3D do_fldt(&ac, ptr); --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1716771257; cv=none; d=zohomail.com; s=zohoarc; b=I0t6t4dbHBkhCtPXc1gSdzLrFbyLuD4BAUHVbxcu7JG4CYughLfXhBvcw+jau9+TqNRyHfcELKaWCmS4gxupqaE1KtnSMiRwiTPQuo1xABTzyKK79b3LuKmvMsqXlYRWBqwE3SOPL58gqoJP3VQW2AiGdFEvX+Qjpb8P55lqgns= ARC-Message-Signature: i=1; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::429; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x429.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771258117100001 Content-Type: text/plain; charset="utf-8" Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/tcg/fpu_helper.c | 45 +++++++++++++++++++----------------- 1 file changed, 24 insertions(+), 21 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index 5ad6e04639..01e9a1fbbf 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -2373,9 +2373,9 @@ void helper_fxam_ST0(CPUX86State *env) } } =20 -static void do_fstenv(CPUX86State *env, target_ulong ptr, int data32, - uintptr_t retaddr) +static void do_fstenv(X86Access *ac, target_ulong ptr, int data32) { + CPUX86State *env =3D ac->env; int fpus, fptag, exp, i; uint64_t mant; CPU_LDoubleU tmp; @@ -2402,28 +2402,31 @@ static void do_fstenv(CPUX86State *env, target_ulon= g ptr, int data32, } if (data32) { /* 32 bit */ - cpu_stl_data_ra(env, ptr, env->fpuc, retaddr); - cpu_stl_data_ra(env, ptr + 4, fpus, retaddr); - cpu_stl_data_ra(env, ptr + 8, fptag, retaddr); - cpu_stl_data_ra(env, ptr + 12, env->fpip, retaddr); /* fpip */ - cpu_stl_data_ra(env, ptr + 16, env->fpcs, retaddr); /* fpcs */ - cpu_stl_data_ra(env, ptr + 20, env->fpdp, retaddr); /* fpoo */ - cpu_stl_data_ra(env, ptr + 24, env->fpds, retaddr); /* fpos */ + access_stl(ac, ptr, env->fpuc); + access_stl(ac, ptr + 4, fpus); + access_stl(ac, ptr + 8, fptag); + access_stl(ac, ptr + 12, env->fpip); /* fpip */ + access_stl(ac, ptr + 16, env->fpcs); /* fpcs */ + access_stl(ac, ptr + 20, env->fpdp); /* fpoo */ + access_stl(ac, ptr + 24, env->fpds); /* fpos */ } else { /* 16 bit */ - cpu_stw_data_ra(env, ptr, env->fpuc, retaddr); - cpu_stw_data_ra(env, ptr + 2, fpus, retaddr); - cpu_stw_data_ra(env, ptr + 4, fptag, retaddr); - cpu_stw_data_ra(env, ptr + 6, env->fpip, retaddr); - cpu_stw_data_ra(env, ptr + 8, env->fpcs, retaddr); - cpu_stw_data_ra(env, ptr + 10, env->fpdp, retaddr); - cpu_stw_data_ra(env, ptr + 12, env->fpds, retaddr); + access_stw(ac, ptr, env->fpuc); + access_stw(ac, ptr + 2, fpus); + access_stw(ac, ptr + 4, fptag); + access_stw(ac, ptr + 6, env->fpip); + access_stw(ac, ptr + 8, env->fpcs); + access_stw(ac, ptr + 10, env->fpdp); + access_stw(ac, ptr + 12, env->fpds); } } =20 void helper_fstenv(CPUX86State *env, target_ulong ptr, int data32) { - do_fstenv(env, ptr, data32, GETPC()); + X86Access ac; + + access_prepare(&ac, env, ptr, 14 << data32, MMU_DATA_STORE, GETPC()); + do_fstenv(&ac, ptr, data32); } =20 static void cpu_set_fpus(CPUX86State *env, uint16_t fpus) @@ -2471,12 +2474,12 @@ static void do_fsave(CPUX86State *env, target_ulong= ptr, int data32, { X86Access ac; floatx80 tmp; - int i; + int i, envsize =3D 14 << data32; =20 - do_fstenv(env, ptr, data32, retaddr); + access_prepare(&ac, env, ptr, envsize + 80, MMU_DATA_STORE, retaddr); =20 - ptr +=3D (target_ulong)14 << data32; - access_prepare(&ac, env, ptr, 80, MMU_DATA_STORE, retaddr); + do_fstenv(&ac, ptr, data32); + ptr +=3D envsize; =20 for (i =3D 0; i < 8; i++) { tmp =3D ST(i); --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1716771148; cv=none; d=zohomail.com; s=zohoarc; b=O1MMO0Y5cmxRMQ9FTbyLNqzJEu3Gt+iNWhQjybGgMZgb+uWslQP2S6m0FbtwqQHbUNA7q8PIFfdUWQHNKFHOVIlHHopTlHU0tsxqiiYUYx4lzAVuoUZgn2rR21EWb6lTyW4VSdwt48y/GeVGbLLU8eHfLnpYvZjl7KDf/oabyDQ= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1716771148; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::333; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x333.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771149597100003 Content-Type: text/plain; charset="utf-8" Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/tcg/fpu_helper.c | 60 ++++++++++++++++++++---------------- 1 file changed, 33 insertions(+), 27 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index 01e9a1fbbf..df12eac71e 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -2469,21 +2469,16 @@ void helper_fldenv(CPUX86State *env, target_ulong p= tr, int data32) do_fldenv(&ac, ptr, data32); } =20 -static void do_fsave(CPUX86State *env, target_ulong ptr, int data32, - uintptr_t retaddr) +static void do_fsave(X86Access *ac, target_ulong ptr, int data32) { - X86Access ac; - floatx80 tmp; - int i, envsize =3D 14 << data32; + CPUX86State *env =3D ac->env; =20 - access_prepare(&ac, env, ptr, envsize + 80, MMU_DATA_STORE, retaddr); + do_fstenv(ac, ptr, data32); + ptr +=3D 14 << data32; =20 - do_fstenv(&ac, ptr, data32); - ptr +=3D envsize; - - for (i =3D 0; i < 8; i++) { - tmp =3D ST(i); - do_fstt(&ac, ptr, tmp); + for (int i =3D 0; i < 8; i++) { + floatx80 tmp =3D ST(i); + do_fstt(ac, ptr, tmp); ptr +=3D 10; } =20 @@ -2492,23 +2487,22 @@ static void do_fsave(CPUX86State *env, target_ulong= ptr, int data32, =20 void helper_fsave(CPUX86State *env, target_ulong ptr, int data32) { - do_fsave(env, ptr, data32, GETPC()); + int size =3D (14 << data32) + 80; + X86Access ac; + + access_prepare(&ac, env, ptr, size, MMU_DATA_STORE, GETPC()); + do_fsave(&ac, ptr, data32); } =20 -static void do_frstor(CPUX86State *env, target_ulong ptr, int data32, - uintptr_t retaddr) +static void do_frstor(X86Access *ac, target_ulong ptr, int data32) { - X86Access ac; - floatx80 tmp; - int i, envsize =3D 14 << data32; + CPUX86State *env =3D ac->env; =20 - access_prepare(&ac, env, ptr, envsize + 80, MMU_DATA_LOAD, retaddr); + do_fldenv(ac, ptr, data32); + ptr +=3D 14 << data32; =20 - do_fldenv(&ac, ptr, data32); - ptr +=3D envsize; - - for (i =3D 0; i < 8; i++) { - tmp =3D do_fldt(&ac, ptr); + for (int i =3D 0; i < 8; i++) { + floatx80 tmp =3D do_fldt(ac, ptr); ST(i) =3D tmp; ptr +=3D 10; } @@ -2516,7 +2510,11 @@ static void do_frstor(CPUX86State *env, target_ulong= ptr, int data32, =20 void helper_frstor(CPUX86State *env, target_ulong ptr, int data32) { - do_frstor(env, ptr, data32, GETPC()); + int size =3D (14 << data32) + 80; + X86Access ac; + + access_prepare(&ac, env, ptr, size, MMU_DATA_LOAD, GETPC()); + do_frstor(&ac, ptr, data32); } =20 #define XO(X) offsetof(X86XSaveArea, X) @@ -2972,12 +2970,20 @@ void helper_xrstor(CPUX86State *env, target_ulong p= tr, uint64_t rfbm) #if defined(CONFIG_USER_ONLY) void cpu_x86_fsave(CPUX86State *env, target_ulong ptr, int data32) { - do_fsave(env, ptr, data32, 0); + int size =3D (14 << data32) + 80; + X86Access ac; + + access_prepare(&ac, env, ptr, size, MMU_DATA_STORE, 0); + do_fsave(&ac, ptr, data32); } =20 void cpu_x86_frstor(CPUX86State *env, target_ulong ptr, int data32) { - do_frstor(env, ptr, data32, 0); + int size =3D (14 << data32) + 80; + X86Access ac; + + access_prepare(&ac, env, ptr, size, MMU_DATA_LOAD, 0); + do_frstor(&ac, ptr, data32); } =20 void cpu_x86_fxsave(CPUX86State *env, target_ulong ptr) --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771369834991.7018979704723; Sun, 26 May 2024 17:56:09 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZP-0007J1-8n; 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771008; x=1717375808; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=V9YixNcV0VmfO6aoH+tEoVfr0IpNqbjtk188TFL76t0=; b=GoWMMoizyYsYqyOGLNPVZ6RtYYfyBDzY13BZprKBLEs3SXbKaKqMRaM+CltxyT7wFB b0rtnDvMuMEufdhtDzudXyBMAIOdJJcKJTq2hoPyWUlt1K5r+WJoB253JF7nIRgZlFmV JPX25v+rvxQE/cFs5X8g3BSA1QkAp+qt6FtoatRaHhEHQ29rcsdvHDS9roYQKfm8uGju b1dElAQR9QSfkO3Ne+d6mAMBHfgQJ0K+0mtjA1f5buqDLJEC6uld6/jEwRHlOkaRAImt 3He3INVC4HPfTsf44cti0TeR9wo6Kdb/WfF/PwkQGnkYf+7RfIQhY/WQ6njotLgJzlfV G0DA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771008; x=1717375808; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=V9YixNcV0VmfO6aoH+tEoVfr0IpNqbjtk188TFL76t0=; b=WvF4M9HQ9Ob7eEs1JB+akftTblHnX9EiGd9vFZsakr3laN/MNYeVjZ/NT+PY2NV540 nvCvH9zt42HC/OCwj23etvsMF4fP70HF2r6p71imGFnD6kqXNcHW1A2ijJQbxb9VNdSZ 9oons4LvxggU0aGmRCPihBNw8okuDAey5ji4byLeerIN4/M1uM241qx7Xeg92tGEiHnk G7OYMFkKeo52CJh2QpoX3ytIx/mF7P52U/SjQUbyIEGu0uGnD3CICMN6P+YczazRMPc2 IiRY6/jHWbearo4PCnp9iqk4Lw1M3os1HzKFQtW3SFkjcNIUw1fBCG1DA/9NgC+3AuoS HvDA== X-Gm-Message-State: AOJu0Yx2SDOLoKq3n4TXLh56zkC7RXyoVhIEAmU8B4J77S5izb+J2Z1J PL/9ICCDmQkNFaXO1MOMt2RtzBdpV2zjNYo6L4cwgkWUlBhiPEWJp0fR+Hw/BAl6GHPtd19WrcF e X-Google-Smtp-Source: AGHT+IE2edoz8OgKOwF4Lb1hZQ3L930fYgxvhhhjsckqpfaU87MpRT+l3olLioSy9pTRlKryXN3uKw== X-Received: by 2002:a05:6a00:e13:b0:6ec:d3a6:801 with SMTP id d2e1a72fcca58-6f8e9fbffd2mr10122643b3a.11.1716771007882; Sun, 26 May 2024 17:50:07 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 07/28] target/i386: Convert do_xsave_{fpu, mxcr, sse} to X86Access Date: Sun, 26 May 2024 17:49:40 -0700 Message-Id: <20240527005001.642825-8-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42b; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1716771370346100003 Content-Type: text/plain; charset="utf-8" Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/tcg/fpu_helper.c | 52 +++++++++++++++++++++--------------- 1 file changed, 31 insertions(+), 21 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index df12eac71e..8fbe6e00ce 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -2519,11 +2519,11 @@ void helper_frstor(CPUX86State *env, target_ulong p= tr, int data32) =20 #define XO(X) offsetof(X86XSaveArea, X) =20 -static void do_xsave_fpu(CPUX86State *env, target_ulong ptr, uintptr_t ra) +static void do_xsave_fpu(X86Access *ac, target_ulong ptr) { + CPUX86State *env =3D ac->env; int fpus, fptag, i; target_ulong addr; - X86Access ac; =20 fpus =3D (env->fpus & ~0x3800) | (env->fpstt & 0x7) << 11; fptag =3D 0; @@ -2531,35 +2531,37 @@ static void do_xsave_fpu(CPUX86State *env, target_u= long ptr, uintptr_t ra) fptag |=3D (env->fptags[i] << i); } =20 - cpu_stw_data_ra(env, ptr + XO(legacy.fcw), env->fpuc, ra); - cpu_stw_data_ra(env, ptr + XO(legacy.fsw), fpus, ra); - cpu_stw_data_ra(env, ptr + XO(legacy.ftw), fptag ^ 0xff, ra); + access_stw(ac, ptr + XO(legacy.fcw), env->fpuc); + access_stw(ac, ptr + XO(legacy.fsw), fpus); + access_stw(ac, ptr + XO(legacy.ftw), fptag ^ 0xff); =20 /* In 32-bit mode this is eip, sel, dp, sel. In 64-bit mode this is rip, rdp. But in either case we don't write actual data, just zeros. */ - cpu_stq_data_ra(env, ptr + XO(legacy.fpip), 0, ra); /* eip+sel; rip */ - cpu_stq_data_ra(env, ptr + XO(legacy.fpdp), 0, ra); /* edp+sel; rdp */ + access_stq(ac, ptr + XO(legacy.fpip), 0); /* eip+sel; rip */ + access_stq(ac, ptr + XO(legacy.fpdp), 0); /* edp+sel; rdp */ =20 addr =3D ptr + XO(legacy.fpregs); - access_prepare(&ac, env, addr, 8 * 16, MMU_DATA_STORE, ra); =20 for (i =3D 0; i < 8; i++) { floatx80 tmp =3D ST(i); - do_fstt(&ac, addr, tmp); + do_fstt(ac, addr, tmp); addr +=3D 16; } } =20 -static void do_xsave_mxcsr(CPUX86State *env, target_ulong ptr, uintptr_t r= a) +static void do_xsave_mxcsr(X86Access *ac, target_ulong ptr) { + CPUX86State *env =3D ac->env; + update_mxcsr_from_sse_status(env); - cpu_stl_data_ra(env, ptr + XO(legacy.mxcsr), env->mxcsr, ra); - cpu_stl_data_ra(env, ptr + XO(legacy.mxcsr_mask), 0x0000ffff, ra); + access_stl(ac, ptr + XO(legacy.mxcsr), env->mxcsr); + access_stl(ac, ptr + XO(legacy.mxcsr_mask), 0x0000ffff); } =20 -static void do_xsave_sse(CPUX86State *env, target_ulong ptr, uintptr_t ra) +static void do_xsave_sse(X86Access *ac, target_ulong ptr) { + CPUX86State *env =3D ac->env; int i, nb_xmm_regs; target_ulong addr; =20 @@ -2571,8 +2573,8 @@ static void do_xsave_sse(CPUX86State *env, target_ulo= ng ptr, uintptr_t ra) =20 addr =3D ptr + XO(legacy.xmm_regs); for (i =3D 0; i < nb_xmm_regs; i++) { - cpu_stq_data_ra(env, addr, env->xmm_regs[i].ZMM_Q(0), ra); - cpu_stq_data_ra(env, addr + 8, env->xmm_regs[i].ZMM_Q(1), ra); + access_stq(ac, addr, env->xmm_regs[i].ZMM_Q(0)); + access_stq(ac, addr + 8, env->xmm_regs[i].ZMM_Q(1)); addr +=3D 16; } } @@ -2619,20 +2621,24 @@ static void do_xsave_pkru(CPUX86State *env, target_= ulong ptr, uintptr_t ra) =20 static void do_fxsave(CPUX86State *env, target_ulong ptr, uintptr_t ra) { + X86Access ac; + /* The operand must be 16 byte aligned */ if (ptr & 0xf) { raise_exception_ra(env, EXCP0D_GPF, ra); } =20 - do_xsave_fpu(env, ptr, ra); + access_prepare(&ac, env, ptr, sizeof(X86LegacyXSaveArea), + MMU_DATA_STORE, ra); + do_xsave_fpu(&ac, ptr); =20 if (env->cr[4] & CR4_OSFXSR_MASK) { - do_xsave_mxcsr(env, ptr, ra); + do_xsave_mxcsr(&ac, ptr); /* Fast FXSAVE leaves out the XMM registers */ if (!(env->efer & MSR_EFER_FFXSR) || (env->hflags & HF_CPL_MASK) || !(env->hflags & HF_LMA_MASK)) { - do_xsave_sse(env, ptr, ra); + do_xsave_sse(&ac, ptr); } } } @@ -2660,6 +2666,7 @@ static void do_xsave(CPUX86State *env, target_ulong p= tr, uint64_t rfbm, uint64_t inuse, uint64_t opt, uintptr_t ra) { uint64_t old_bv, new_bv; + X86Access ac; =20 /* The OS must have enabled XSAVE. */ if (!(env->cr[4] & CR4_OSXSAVE_MASK)) { @@ -2675,15 +2682,18 @@ static void do_xsave(CPUX86State *env, target_ulong= ptr, uint64_t rfbm, rfbm &=3D env->xcr0; opt &=3D rfbm; =20 + access_prepare(&ac, env, ptr, sizeof(X86LegacyXSaveArea), + MMU_DATA_STORE, ra); + if (opt & XSTATE_FP_MASK) { - do_xsave_fpu(env, ptr, ra); + do_xsave_fpu(&ac, ptr); } if (rfbm & XSTATE_SSE_MASK) { /* Note that saving MXCSR is not suppressed by XSAVEOPT. */ - do_xsave_mxcsr(env, ptr, ra); + do_xsave_mxcsr(&ac, ptr); } if (opt & XSTATE_SSE_MASK) { - do_xsave_sse(env, ptr, ra); + do_xsave_sse(&ac, ptr); } if (opt & XSTATE_YMM_MASK) { do_xsave_ymmh(env, ptr + XO(avx_state), ra); --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771099622426.15978805566044; Sun, 26 May 2024 17:51:39 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZL-0007Gb-Rf; Sun, 26 May 2024 20:50:31 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBOZA-00077m-U4 for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:22 -0400 Received: from mail-pf1-x431.google.com ([2607:f8b0:4864:20::431]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sBOZ2-0003ad-VK for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:19 -0400 Received: by mail-pf1-x431.google.com with SMTP id d2e1a72fcca58-6f4603237e0so3300345b3a.0 for ; Sun, 26 May 2024 17:50:09 -0700 (PDT) Received: from stoup.. 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::431; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x431.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1716771101456100003 Content-Type: text/plain; charset="utf-8" Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/tcg/fpu_helper.c | 46 ++++++++++++++++++++++-------------- 1 file changed, 28 insertions(+), 18 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index 8fbe6e00ce..f21cdb45ea 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -2725,39 +2725,41 @@ void helper_xsaveopt(CPUX86State *env, target_ulong= ptr, uint64_t rfbm) do_xsave(env, ptr, rfbm, inuse, inuse, GETPC()); } =20 -static void do_xrstor_fpu(CPUX86State *env, target_ulong ptr, uintptr_t ra) +static void do_xrstor_fpu(X86Access *ac, target_ulong ptr) { + CPUX86State *env =3D ac->env; int i, fpuc, fpus, fptag; target_ulong addr; - X86Access ac; =20 - fpuc =3D cpu_lduw_data_ra(env, ptr + XO(legacy.fcw), ra); - fpus =3D cpu_lduw_data_ra(env, ptr + XO(legacy.fsw), ra); - fptag =3D cpu_lduw_data_ra(env, ptr + XO(legacy.ftw), ra); + fpuc =3D access_ldw(ac, ptr + XO(legacy.fcw)); + fpus =3D access_ldw(ac, ptr + XO(legacy.fsw)); + fptag =3D access_ldw(ac, ptr + XO(legacy.ftw)); cpu_set_fpuc(env, fpuc); cpu_set_fpus(env, fpus); + fptag ^=3D 0xff; for (i =3D 0; i < 8; i++) { env->fptags[i] =3D ((fptag >> i) & 1); } =20 addr =3D ptr + XO(legacy.fpregs); - access_prepare(&ac, env, addr, 8 * 16, MMU_DATA_LOAD, ra); =20 for (i =3D 0; i < 8; i++) { - floatx80 tmp =3D do_fldt(&ac, addr); + floatx80 tmp =3D do_fldt(ac, addr); ST(i) =3D tmp; addr +=3D 16; } } =20 -static void do_xrstor_mxcsr(CPUX86State *env, target_ulong ptr, uintptr_t = ra) +static void do_xrstor_mxcsr(X86Access *ac, target_ulong ptr) { - cpu_set_mxcsr(env, cpu_ldl_data_ra(env, ptr + XO(legacy.mxcsr), ra)); + CPUX86State *env =3D ac->env; + cpu_set_mxcsr(env, access_ldl(ac, ptr + XO(legacy.mxcsr))); } =20 -static void do_xrstor_sse(CPUX86State *env, target_ulong ptr, uintptr_t ra) +static void do_xrstor_sse(X86Access *ac, target_ulong ptr) { + CPUX86State *env =3D ac->env; int i, nb_xmm_regs; target_ulong addr; =20 @@ -2769,8 +2771,8 @@ static void do_xrstor_sse(CPUX86State *env, target_ul= ong ptr, uintptr_t ra) =20 addr =3D ptr + XO(legacy.xmm_regs); for (i =3D 0; i < nb_xmm_regs; i++) { - env->xmm_regs[i].ZMM_Q(0) =3D cpu_ldq_data_ra(env, addr, ra); - env->xmm_regs[i].ZMM_Q(1) =3D cpu_ldq_data_ra(env, addr + 8, ra); + env->xmm_regs[i].ZMM_Q(0) =3D access_ldq(ac, addr); + env->xmm_regs[i].ZMM_Q(1) =3D access_ldq(ac, addr + 8); addr +=3D 16; } } @@ -2850,20 +2852,24 @@ static void do_xrstor_pkru(CPUX86State *env, target= _ulong ptr, uintptr_t ra) =20 static void do_fxrstor(CPUX86State *env, target_ulong ptr, uintptr_t ra) { + X86Access ac; + /* The operand must be 16 byte aligned */ if (ptr & 0xf) { raise_exception_ra(env, EXCP0D_GPF, ra); } =20 - do_xrstor_fpu(env, ptr, ra); + access_prepare(&ac, env, ptr, sizeof(X86LegacyXSaveArea), + MMU_DATA_LOAD, ra); + do_xrstor_fpu(&ac, ptr); =20 if (env->cr[4] & CR4_OSFXSR_MASK) { - do_xrstor_mxcsr(env, ptr, ra); + do_xrstor_mxcsr(&ac, ptr); /* Fast FXRSTOR leaves out the XMM registers */ if (!(env->efer & MSR_EFER_FFXSR) || (env->hflags & HF_CPL_MASK) || !(env->hflags & HF_LMA_MASK)) { - do_xrstor_sse(env, ptr, ra); + do_xrstor_sse(&ac, ptr); } } } @@ -2876,6 +2882,7 @@ void helper_fxrstor(CPUX86State *env, target_ulong pt= r) static void do_xrstor(CPUX86State *env, target_ulong ptr, uint64_t rfbm, u= intptr_t ra) { uint64_t xstate_bv, xcomp_bv, reserve0; + X86Access ac; =20 rfbm &=3D env->xcr0; =20 @@ -2914,9 +2921,12 @@ static void do_xrstor(CPUX86State *env, target_ulong= ptr, uint64_t rfbm, uintptr raise_exception_ra(env, EXCP0D_GPF, ra); } =20 + access_prepare(&ac, env, ptr, sizeof(X86LegacyXSaveArea), + MMU_DATA_LOAD, ra); + if (rfbm & XSTATE_FP_MASK) { if (xstate_bv & XSTATE_FP_MASK) { - do_xrstor_fpu(env, ptr, ra); + do_xrstor_fpu(&ac, ptr); } else { do_fninit(env); memset(env->fpregs, 0, sizeof(env->fpregs)); @@ -2925,9 +2935,9 @@ static void do_xrstor(CPUX86State *env, target_ulong = ptr, uint64_t rfbm, uintptr if (rfbm & XSTATE_SSE_MASK) { /* Note that the standard form of XRSTOR loads MXCSR from memory whether or not the XSTATE_BV bit is set. */ - do_xrstor_mxcsr(env, ptr, ra); + do_xrstor_mxcsr(&ac, ptr); if (xstate_bv & XSTATE_SSE_MASK) { - do_xrstor_sse(env, ptr, ra); + do_xrstor_sse(&ac, ptr); } else { do_clear_sse(env); } --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1716771368; cv=none; d=zohomail.com; s=zohoarc; b=c2N2uAj1NoVCUAlgG76G3FzxdK4xwidlKUy63bB4GgMO2HKyKhpogM/R98Gv+OzLhlnxI+aebnpoQVLHa1iUnks5G/r5YDTSXR9DnJJAvOR87vPWyvMrOj2gvzgaa9I0BaWLiIcCxNE/uxCdTmn8x6RuF5gOO35zlIFk7C0aLZk= ARC-Message-Signature: i=1; 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771009; x=1717375809; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=P6MuOwzw42ZKpRW8ddJXISHZONVvscEtylHvzBQmNeY=; b=MBFbXftdxlFqiIOHi5lW0QNjaa6GAGXU1+cMDvPWe+3hh7Z4CgENsvdMF90Mr+x+5q gpFt1movnF/cBZeXOLRUP+p3Nj8qNss3Hq0pmVsZFhqJTTprHZs683/gezTuWQr9WJh3 QZ19E/ISP9v6Q1w79OVKbchOgjDxhaXB4Y5MrLdNH+iugB3FjDtNsV9TiY/iZsa+J98V S6ONzobbU4SAxweRKWQpDrIGHc1UalUBBL/o7scu3YMoeBjlIR31e+S254UXV99rXRGp C/Ux2cRvRYtDDNrWX0oCZ2byrbCJkQR2Bd4TjUhIE+Azd3eEim0gvoYbSAxm3Zhasdmo Fb8w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771009; x=1717375809; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=P6MuOwzw42ZKpRW8ddJXISHZONVvscEtylHvzBQmNeY=; b=FnWywxZ9tkR7YrA0IodLE8EFBFdj4ST8O/1bkJy6klCyiWHUILqLhaazw372RGznhd 2BEz82+PNrpHxbVwggVhDpg4HgMoU+CKHnLe2pVqf/bjr2bZgr2w6xHrG+xAgWEQ0jyj GEKwV0351g6HliOo9xkbw24/D629uG1C6N857yBoqsYwG508lPMEJeg/4POhyFOsDIJ7 /na/M5sHbQ97+4EbGWNg8FT6J6YVpQFlJm7h9waeKn+LfTUezg4jKtGSyZz9qXFhXVB0 Ajudm24kvL+pZuUrt/xF9NzBlVgH9JNZcWUYrNkW9b9g09L6gkXrQxg+3iUCBhNtbaVT xBxA== X-Gm-Message-State: AOJu0YwuOIx2W8Ee2UiDe7JQhfodIAkLPt6gMc76/x80AwQG/Ji3expN D8WnsrUGGlNEGRkPNCtPKUO+jDCk5VNhEoSl/5/szfgiZK4f1XqZSUXowfHB5OXKJQxAox8/4fl D X-Google-Smtp-Source: AGHT+IEVGgcz332xBGzplpAiAp+7II2zdoG7/iSHYml26Q/KHZzNvIIjgLpRrT2c/oCudOPS8jX9tg== X-Received: by 2002:a05:6870:168f:b0:24c:adc0:ffa1 with SMTP id 586e51a60fabf-24cadc101a0mr8631134fac.0.1716771009396; Sun, 26 May 2024 17:50:09 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 09/28] tagret/i386: Convert do_fxsave, do_fxrstor to X86Access Date: Sun, 26 May 2024 17:49:42 -0700 Message-Id: <20240527005001.642825-10-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:4860:4864:20::31; envelope-from=richard.henderson@linaro.org; helo=mail-oa1-x31.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771370350100004 Content-Type: text/plain; charset="utf-8" Move the alignment fault from do_* to helper_*, as it need not apply to usage from within user-only signal handling. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/tcg/fpu_helper.c | 84 ++++++++++++++++++++---------------- 1 file changed, 48 insertions(+), 36 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index f21cdb45ea..4dcb0b92ff 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -2619,8 +2619,25 @@ static void do_xsave_pkru(CPUX86State *env, target_u= long ptr, uintptr_t ra) cpu_stq_data_ra(env, ptr, env->pkru, ra); } =20 -static void do_fxsave(CPUX86State *env, target_ulong ptr, uintptr_t ra) +static void do_fxsave(X86Access *ac, target_ulong ptr) { + CPUX86State *env =3D ac->env; + + do_xsave_fpu(ac, ptr); + if (env->cr[4] & CR4_OSFXSR_MASK) { + do_xsave_mxcsr(ac, ptr); + /* Fast FXSAVE leaves out the XMM registers */ + if (!(env->efer & MSR_EFER_FFXSR) + || (env->hflags & HF_CPL_MASK) + || !(env->hflags & HF_LMA_MASK)) { + do_xsave_sse(ac, ptr); + } + } +} + +void helper_fxsave(CPUX86State *env, target_ulong ptr) +{ + uintptr_t ra =3D GETPC(); X86Access ac; =20 /* The operand must be 16 byte aligned */ @@ -2630,22 +2647,7 @@ static void do_fxsave(CPUX86State *env, target_ulong= ptr, uintptr_t ra) =20 access_prepare(&ac, env, ptr, sizeof(X86LegacyXSaveArea), MMU_DATA_STORE, ra); - do_xsave_fpu(&ac, ptr); - - if (env->cr[4] & CR4_OSFXSR_MASK) { - do_xsave_mxcsr(&ac, ptr); - /* Fast FXSAVE leaves out the XMM registers */ - if (!(env->efer & MSR_EFER_FFXSR) - || (env->hflags & HF_CPL_MASK) - || !(env->hflags & HF_LMA_MASK)) { - do_xsave_sse(&ac, ptr); - } - } -} - -void helper_fxsave(CPUX86State *env, target_ulong ptr) -{ - do_fxsave(env, ptr, GETPC()); + do_fxsave(&ac, ptr); } =20 static uint64_t get_xinuse(CPUX86State *env) @@ -2850,8 +2852,25 @@ static void do_xrstor_pkru(CPUX86State *env, target_= ulong ptr, uintptr_t ra) env->pkru =3D cpu_ldq_data_ra(env, ptr, ra); } =20 -static void do_fxrstor(CPUX86State *env, target_ulong ptr, uintptr_t ra) +static void do_fxrstor(X86Access *ac, target_ulong ptr) { + CPUX86State *env =3D ac->env; + + do_xrstor_fpu(ac, ptr); + if (env->cr[4] & CR4_OSFXSR_MASK) { + do_xrstor_mxcsr(ac, ptr); + /* Fast FXRSTOR leaves out the XMM registers */ + if (!(env->efer & MSR_EFER_FFXSR) + || (env->hflags & HF_CPL_MASK) + || !(env->hflags & HF_LMA_MASK)) { + do_xrstor_sse(ac, ptr); + } + } +} + +void helper_fxrstor(CPUX86State *env, target_ulong ptr) +{ + uintptr_t ra =3D GETPC(); X86Access ac; =20 /* The operand must be 16 byte aligned */ @@ -2861,22 +2880,7 @@ static void do_fxrstor(CPUX86State *env, target_ulon= g ptr, uintptr_t ra) =20 access_prepare(&ac, env, ptr, sizeof(X86LegacyXSaveArea), MMU_DATA_LOAD, ra); - do_xrstor_fpu(&ac, ptr); - - if (env->cr[4] & CR4_OSFXSR_MASK) { - do_xrstor_mxcsr(&ac, ptr); - /* Fast FXRSTOR leaves out the XMM registers */ - if (!(env->efer & MSR_EFER_FFXSR) - || (env->hflags & HF_CPL_MASK) - || !(env->hflags & HF_LMA_MASK)) { - do_xrstor_sse(&ac, ptr); - } - } -} - -void helper_fxrstor(CPUX86State *env, target_ulong ptr) -{ - do_fxrstor(env, ptr, GETPC()); + do_fxrstor(&ac, ptr); } =20 static void do_xrstor(CPUX86State *env, target_ulong ptr, uint64_t rfbm, u= intptr_t ra) @@ -3008,12 +3012,20 @@ void cpu_x86_frstor(CPUX86State *env, target_ulong = ptr, int data32) =20 void cpu_x86_fxsave(CPUX86State *env, target_ulong ptr) { - do_fxsave(env, ptr, 0); + X86Access ac; + + access_prepare(&ac, env, ptr, sizeof(X86LegacyXSaveArea), + MMU_DATA_STORE, 0); + do_fxsave(&ac, ptr); } =20 void cpu_x86_fxrstor(CPUX86State *env, target_ulong ptr) { - do_fxrstor(env, ptr, 0); + X86Access ac; + + access_prepare(&ac, env, ptr, sizeof(X86LegacyXSaveArea), + MMU_DATA_LOAD, 0); + do_fxrstor(&ac, ptr); } =20 void cpu_x86_xsave(CPUX86State *env, target_ulong ptr) --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:09 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771010; x=1717375810; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=8W7kdXBVphE/G8J+gJEIX1gz3O6+dJRyyNI2VZW5z4A=; b=ipLPt+HA3Pf6K7NWLA6YRqZOz/qqp3GMS2OCV0dD5U4aBfqx9KMtl0b1l16ITn4mOE ILlQ6OEKtiWl1HCl4AXfsdXQ1wU6z1P2CsVQKuxkBXeeNET+59vcLjHmd5lOWC7kfeGA ppC8pkIqWF75kURAe7MuLoBOMdkvXTkQg1E9raCgGKi/Nqg7l737mD2A+lC6/jwdEwF4 T+FHU8Tq69gjovIXS9Avr0vnBmGBOQsnUzSg2AljALjdVPZ/FK+J3kxBmg+MoHxNpYNc BwsefpdqNrRqFCj3K8IEpoYoch6aUsJKzEJogvM2/Yd10NP2xVUd86L986gK//ArmSJz Uhqw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771010; x=1717375810; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=8W7kdXBVphE/G8J+gJEIX1gz3O6+dJRyyNI2VZW5z4A=; b=XuyVPr0ehGuZxksm+kyhOBRrPsvyL7kdYboLGhCkOV58908FfFOxhY/qTARwJ9OsDY WEz+i5BtEXTNSNa/hAEyuu5n59/8tjbygqRST1jhc2t2t1oJr7Cl+IpuSIla7/3offXC +sLWRIgVfma29E02+EVKmOlVUA9U8xBmTnVMiboU3hqOHnUZI+ScxN/QlriJ9s1iY42p V8Z9ybi9KUHBuHmEIg/f2RK1eC2w41jq9bNTyw64TZmLBSSIzEMp8iVbCBCqs3qC06j3 urxNKSRjUNChRRCAlZ/SPowgOwqceR4t/Ly6rJdgjHPX3cuc0BhGEOINQ/G1qnMycF19 Nh1Q== X-Gm-Message-State: AOJu0Yw9O0alzvB8wTnjPxO62a6+hXm7OyMLucGLdkpssR8iDzQRMmYW Oa0/zmMsHf9102m2YzOtI9eIvc+PhsVnbz46I7uCAGeQ4ATpn5iCrKxJPE1ZP+5fWfHX5+RY4eN f X-Google-Smtp-Source: AGHT+IGDlBAaWioWHwMofoTXDV/4jtd0d7ODpScT2knPuDScP0kYMsfRLEKOwWEOoVqDIQ7zbO1sjw== X-Received: by 2002:a05:6870:b512:b0:24c:b769:3cfe with SMTP id 586e51a60fabf-24cb7695718mr7664734fac.28.1716771010429; Sun, 26 May 2024 17:50:10 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 10/28] target/i386: Convert do_xsave_* to X86Access Date: Sun, 26 May 2024 17:49:43 -0700 Message-Id: <20240527005001.642825-11-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::c2c; envelope-from=richard.henderson@linaro.org; helo=mail-oo1-xc2c.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771420850100001 Content-Type: text/plain; charset="utf-8" The body of do_xsave is now fully converted. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/tcg/fpu_helper.c | 47 ++++++++++++++++++++---------------- 1 file changed, 26 insertions(+), 21 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index 4dcb0b92ff..356397a4ab 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -2579,8 +2579,9 @@ static void do_xsave_sse(X86Access *ac, target_ulong = ptr) } } =20 -static void do_xsave_ymmh(CPUX86State *env, target_ulong ptr, uintptr_t ra) +static void do_xsave_ymmh(X86Access *ac, target_ulong ptr) { + CPUX86State *env =3D ac->env; int i, nb_xmm_regs; =20 if (env->hflags & HF_CS64_MASK) { @@ -2590,33 +2591,36 @@ static void do_xsave_ymmh(CPUX86State *env, target_= ulong ptr, uintptr_t ra) } =20 for (i =3D 0; i < nb_xmm_regs; i++, ptr +=3D 16) { - cpu_stq_data_ra(env, ptr, env->xmm_regs[i].ZMM_Q(2), ra); - cpu_stq_data_ra(env, ptr + 8, env->xmm_regs[i].ZMM_Q(3), ra); + access_stq(ac, ptr, env->xmm_regs[i].ZMM_Q(2)); + access_stq(ac, ptr + 8, env->xmm_regs[i].ZMM_Q(3)); } } =20 -static void do_xsave_bndregs(CPUX86State *env, target_ulong ptr, uintptr_t= ra) +static void do_xsave_bndregs(X86Access *ac, target_ulong ptr) { + CPUX86State *env =3D ac->env; target_ulong addr =3D ptr + offsetof(XSaveBNDREG, bnd_regs); int i; =20 for (i =3D 0; i < 4; i++, addr +=3D 16) { - cpu_stq_data_ra(env, addr, env->bnd_regs[i].lb, ra); - cpu_stq_data_ra(env, addr + 8, env->bnd_regs[i].ub, ra); + access_stq(ac, addr, env->bnd_regs[i].lb); + access_stq(ac, addr + 8, env->bnd_regs[i].ub); } } =20 -static void do_xsave_bndcsr(CPUX86State *env, target_ulong ptr, uintptr_t = ra) +static void do_xsave_bndcsr(X86Access *ac, target_ulong ptr) { - cpu_stq_data_ra(env, ptr + offsetof(XSaveBNDCSR, bndcsr.cfgu), - env->bndcs_regs.cfgu, ra); - cpu_stq_data_ra(env, ptr + offsetof(XSaveBNDCSR, bndcsr.sts), - env->bndcs_regs.sts, ra); + CPUX86State *env =3D ac->env; + + access_stq(ac, ptr + offsetof(XSaveBNDCSR, bndcsr.cfgu), + env->bndcs_regs.cfgu); + access_stq(ac, ptr + offsetof(XSaveBNDCSR, bndcsr.sts), + env->bndcs_regs.sts); } =20 -static void do_xsave_pkru(CPUX86State *env, target_ulong ptr, uintptr_t ra) +static void do_xsave_pkru(X86Access *ac, target_ulong ptr) { - cpu_stq_data_ra(env, ptr, env->pkru, ra); + access_stq(ac, ptr, ac->env->pkru); } =20 static void do_fxsave(X86Access *ac, target_ulong ptr) @@ -2669,6 +2673,7 @@ static void do_xsave(CPUX86State *env, target_ulong p= tr, uint64_t rfbm, { uint64_t old_bv, new_bv; X86Access ac; + unsigned size; =20 /* The OS must have enabled XSAVE. */ if (!(env->cr[4] & CR4_OSXSAVE_MASK)) { @@ -2684,8 +2689,8 @@ static void do_xsave(CPUX86State *env, target_ulong p= tr, uint64_t rfbm, rfbm &=3D env->xcr0; opt &=3D rfbm; =20 - access_prepare(&ac, env, ptr, sizeof(X86LegacyXSaveArea), - MMU_DATA_STORE, ra); + size =3D xsave_area_size(opt, false); + access_prepare(&ac, env, ptr, size, MMU_DATA_STORE, ra); =20 if (opt & XSTATE_FP_MASK) { do_xsave_fpu(&ac, ptr); @@ -2698,22 +2703,22 @@ static void do_xsave(CPUX86State *env, target_ulong= ptr, uint64_t rfbm, do_xsave_sse(&ac, ptr); } if (opt & XSTATE_YMM_MASK) { - do_xsave_ymmh(env, ptr + XO(avx_state), ra); + do_xsave_ymmh(&ac, ptr + XO(avx_state)); } if (opt & XSTATE_BNDREGS_MASK) { - do_xsave_bndregs(env, ptr + XO(bndreg_state), ra); + do_xsave_bndregs(&ac, ptr + XO(bndreg_state)); } if (opt & XSTATE_BNDCSR_MASK) { - do_xsave_bndcsr(env, ptr + XO(bndcsr_state), ra); + do_xsave_bndcsr(&ac, ptr + XO(bndcsr_state)); } if (opt & XSTATE_PKRU_MASK) { - do_xsave_pkru(env, ptr + XO(pkru_state), ra); + do_xsave_pkru(&ac, ptr + XO(pkru_state)); } =20 /* Update the XSTATE_BV field. */ - old_bv =3D cpu_ldq_data_ra(env, ptr + XO(header.xstate_bv), ra); + old_bv =3D access_ldq(&ac, ptr + XO(header.xstate_bv)); new_bv =3D (old_bv & ~rfbm) | (inuse & rfbm); - cpu_stq_data_ra(env, ptr + XO(header.xstate_bv), new_bv, ra); + access_stq(&ac, ptr + XO(header.xstate_bv), new_bv); } =20 void helper_xsave(CPUX86State *env, target_ulong ptr, uint64_t rfbm) --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.10 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771011; x=1717375811; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=C6S9A0jxcxnkPHJaqWqoqo+edkANvVkLpXEGqNBGzxw=; b=Ov+pbUbciM3bBfOO6IrKBOFlk/Natt3A/WHnMPeehJ8x51w2Iu7RoMZdmz8w/SUmUn FbiItVrSXG1AXyjYrL3wtlflozfGtmWTgkrB2gVP/DBJAwmT4jwHrIVyPTxGC4js4Tjo 81gaHdz969WzMqkCpuIg8gvhu34c4sxN1Tz0xXFdiOrwIWrmd1Yk/FYKYYQBZk1fpNcb /cq1O0h5psL6Tc4TkgZ3m4lrS5XMlJxhpaYqArY7YsG3QilvncZfTRnc0MPxrkcnKze1 RlWD77LWK5sr8HebpjC5C7i5T6qsWDTCnTQ9vzXz5o/Tnt6FIGA2+uLZYyr8aI4FWH3D ezFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771011; x=1717375811; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=C6S9A0jxcxnkPHJaqWqoqo+edkANvVkLpXEGqNBGzxw=; b=BpSCddiibLdAmdDRbo42gKkZglv5cs0qwg6guPncAeJyalkG96JQeyZ+ykDldsKNTV aaaHz9PUYG/qjzYpElLFLAeyvQhi/ZgdQF+Ux67s3Sy/nS09NYhSgVNyw2dsVjPe4rWz uc9dAmI63/twyXjAsZ6OKEhsTdFHZSn5KyPeM71D9bDcfGQsWiXmg2BW12go3/kwCsGa 27nVd+G+yr4cKdietw3GdCk18/z0bWj2xjj7vtg2+LnwK9bzceC29FjvJDWo/TrFMGw5 EgCebtZeDtgrnqKIW2awOdW/K+WpBPel8dONaP2BU0kblbPZgjl6lwOvssANUKNnKsdK J0Ag== X-Gm-Message-State: AOJu0YzlCMfrSlRCVj6ZiCTLmQpI2hoJkrO8k6M5CYoio0j4leXmnEiO wfoLU0z0gISEoZnXX4OM/K4qofPMHhgCWNExOoR4TTvu7pKS72lmbzdA29Hc0XmnGZG6AcgWic9 + X-Google-Smtp-Source: AGHT+IFyTa7BllHv/3GT/HuLnE6MgoDCN4KpFIzdr4HuxYscHd5mIP3tdOUr7LBMxrfG2Y/STuxySw== X-Received: by 2002:a05:6a00:4093:b0:6e6:9f47:c18c with SMTP id d2e1a72fcca58-6f8f41a9f2dmr7955334b3a.33.1716771011329; Sun, 26 May 2024 17:50:11 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 11/28] target/i386: Convert do_xrstor_* to X86Access Date: Sun, 26 May 2024 17:49:44 -0700 Message-Id: <20240527005001.642825-12-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42f; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771296076100001 Content-Type: text/plain; charset="utf-8" The body of do_xrstor is now fully converted. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/tcg/fpu_helper.c | 51 ++++++++++++++++++++++-------------- 1 file changed, 31 insertions(+), 20 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index 356397a4ab..7796688514 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -2800,8 +2800,9 @@ static void do_clear_sse(CPUX86State *env) } } =20 -static void do_xrstor_ymmh(CPUX86State *env, target_ulong ptr, uintptr_t r= a) +static void do_xrstor_ymmh(X86Access *ac, target_ulong ptr) { + CPUX86State *env =3D ac->env; int i, nb_xmm_regs; =20 if (env->hflags & HF_CS64_MASK) { @@ -2811,8 +2812,8 @@ static void do_xrstor_ymmh(CPUX86State *env, target_u= long ptr, uintptr_t ra) } =20 for (i =3D 0; i < nb_xmm_regs; i++, ptr +=3D 16) { - env->xmm_regs[i].ZMM_Q(2) =3D cpu_ldq_data_ra(env, ptr, ra); - env->xmm_regs[i].ZMM_Q(3) =3D cpu_ldq_data_ra(env, ptr + 8, ra); + env->xmm_regs[i].ZMM_Q(2) =3D access_ldq(ac, ptr); + env->xmm_regs[i].ZMM_Q(3) =3D access_ldq(ac, ptr + 8); } } =20 @@ -2832,29 +2833,32 @@ static void do_clear_ymmh(CPUX86State *env) } } =20 -static void do_xrstor_bndregs(CPUX86State *env, target_ulong ptr, uintptr_= t ra) +static void do_xrstor_bndregs(X86Access *ac, target_ulong ptr) { + CPUX86State *env =3D ac->env; target_ulong addr =3D ptr + offsetof(XSaveBNDREG, bnd_regs); int i; =20 for (i =3D 0; i < 4; i++, addr +=3D 16) { - env->bnd_regs[i].lb =3D cpu_ldq_data_ra(env, addr, ra); - env->bnd_regs[i].ub =3D cpu_ldq_data_ra(env, addr + 8, ra); + env->bnd_regs[i].lb =3D access_ldq(ac, addr); + env->bnd_regs[i].ub =3D access_ldq(ac, addr + 8); } } =20 -static void do_xrstor_bndcsr(CPUX86State *env, target_ulong ptr, uintptr_t= ra) +static void do_xrstor_bndcsr(X86Access *ac, target_ulong ptr) { + CPUX86State *env =3D ac->env; + /* FIXME: Extend highest implemented bit of linear address. */ env->bndcs_regs.cfgu - =3D cpu_ldq_data_ra(env, ptr + offsetof(XSaveBNDCSR, bndcsr.cfgu),= ra); + =3D access_ldq(ac, ptr + offsetof(XSaveBNDCSR, bndcsr.cfgu)); env->bndcs_regs.sts - =3D cpu_ldq_data_ra(env, ptr + offsetof(XSaveBNDCSR, bndcsr.sts), = ra); + =3D access_ldq(ac, ptr + offsetof(XSaveBNDCSR, bndcsr.sts)); } =20 -static void do_xrstor_pkru(CPUX86State *env, target_ulong ptr, uintptr_t r= a) +static void do_xrstor_pkru(X86Access *ac, target_ulong ptr) { - env->pkru =3D cpu_ldq_data_ra(env, ptr, ra); + ac->env->pkru =3D access_ldq(ac, ptr); } =20 static void do_fxrstor(X86Access *ac, target_ulong ptr) @@ -2892,6 +2896,7 @@ static void do_xrstor(CPUX86State *env, target_ulong = ptr, uint64_t rfbm, uintptr { uint64_t xstate_bv, xcomp_bv, reserve0; X86Access ac; + unsigned size, size_ext; =20 rfbm &=3D env->xcr0; =20 @@ -2905,7 +2910,10 @@ static void do_xrstor(CPUX86State *env, target_ulong= ptr, uint64_t rfbm, uintptr raise_exception_ra(env, EXCP0D_GPF, ra); } =20 - xstate_bv =3D cpu_ldq_data_ra(env, ptr + XO(header.xstate_bv), ra); + size =3D sizeof(X86LegacyXSaveArea) + sizeof(X86XSaveHeader); + access_prepare(&ac, env, ptr, size, MMU_DATA_LOAD, ra); + + xstate_bv =3D access_ldq(&ac, ptr + XO(header.xstate_bv)); =20 if ((int64_t)xstate_bv < 0) { /* FIXME: Compact form. */ @@ -2924,14 +2932,17 @@ static void do_xrstor(CPUX86State *env, target_ulon= g ptr, uint64_t rfbm, uintptr describes only XCOMP_BV, but the description of the standard form of XRSTOR (Vol 1, Sec 13.8.1) checks bytes 23:8 for zero, which includes the next 64-bit field. */ - xcomp_bv =3D cpu_ldq_data_ra(env, ptr + XO(header.xcomp_bv), ra); - reserve0 =3D cpu_ldq_data_ra(env, ptr + XO(header.reserve0), ra); + xcomp_bv =3D access_ldq(&ac, ptr + XO(header.xcomp_bv)); + reserve0 =3D access_ldq(&ac, ptr + XO(header.reserve0)); if (xcomp_bv || reserve0) { raise_exception_ra(env, EXCP0D_GPF, ra); } =20 - access_prepare(&ac, env, ptr, sizeof(X86LegacyXSaveArea), - MMU_DATA_LOAD, ra); + size_ext =3D xsave_area_size(rfbm & xstate_bv, false); + if (size < size_ext) { + /* TODO: See if existing page probe has covered extra size. */ + access_prepare(&ac, env, ptr, size_ext, MMU_DATA_LOAD, ra); + } =20 if (rfbm & XSTATE_FP_MASK) { if (xstate_bv & XSTATE_FP_MASK) { @@ -2953,14 +2964,14 @@ static void do_xrstor(CPUX86State *env, target_ulon= g ptr, uint64_t rfbm, uintptr } if (rfbm & XSTATE_YMM_MASK) { if (xstate_bv & XSTATE_YMM_MASK) { - do_xrstor_ymmh(env, ptr + XO(avx_state), ra); + do_xrstor_ymmh(&ac, ptr + XO(avx_state)); } else { do_clear_ymmh(env); } } if (rfbm & XSTATE_BNDREGS_MASK) { if (xstate_bv & XSTATE_BNDREGS_MASK) { - do_xrstor_bndregs(env, ptr + XO(bndreg_state), ra); + do_xrstor_bndregs(&ac, ptr + XO(bndreg_state)); env->hflags |=3D HF_MPX_IU_MASK; } else { memset(env->bnd_regs, 0, sizeof(env->bnd_regs)); @@ -2969,7 +2980,7 @@ static void do_xrstor(CPUX86State *env, target_ulong = ptr, uint64_t rfbm, uintptr } if (rfbm & XSTATE_BNDCSR_MASK) { if (xstate_bv & XSTATE_BNDCSR_MASK) { - do_xrstor_bndcsr(env, ptr + XO(bndcsr_state), ra); + do_xrstor_bndcsr(&ac, ptr + XO(bndcsr_state)); } else { memset(&env->bndcs_regs, 0, sizeof(env->bndcs_regs)); } @@ -2978,7 +2989,7 @@ static void do_xrstor(CPUX86State *env, target_ulong = ptr, uint64_t rfbm, uintptr if (rfbm & XSTATE_PKRU_MASK) { uint64_t old_pkru =3D env->pkru; 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771012; x=1717375812; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=3VUA0H1FqSwLKp/HJjCgFsX8ntjk+Qvs0JjKKwjJR0Q=; b=ZCKmIlj6yrJmsnhHpblDmK1J4ooYomLfIokbVF84DRuFJkE+IyVsj+jORpqaix8Rtr C4FJ29gTsuusLVHyhZXCjJqWkGxb8icn6S2xydD6A+YFXjFk1aLOQCXp5TZ9D4NWo23e zDak7rlgQ9QSTq33vcLp5l9Vf17P50Stzp/70egSIxnpn1KwaV8bYQCXNfU4MDKW7sil ivBZSFzpQ9eA20lkRW9anC7I6wq2Pu2MoCv4HDXtOFLuO2DXiTQMqSj/faCpDIphj8GW 0z6OXjksk2y3HSzYvPY9/F2BADzuqYrX2SBBXGL3+5fAfD9+JGCV4iu/hA+HzLi0w0dA a3tg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771012; x=1717375812; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=3VUA0H1FqSwLKp/HJjCgFsX8ntjk+Qvs0JjKKwjJR0Q=; b=DZ81qcrbp/2FpE0lE4cNDAuJE1reqcZK+K1yvWGCaYYCfcfIa5+kYTffRxiL96lrB/ IVZ9+YU8S0c2L3dNi8a1fi3RWfUce16AwRathH0eYcA15b4KjmisM9s+CwbHnSjw8zKv vRpGFFsF40sNln/zml2R1OYbOAxHr04prwTRRcRZKVOid2NZDZn69ZlrFswrjpbwiiCL jIgQdU/8OBxBiOmC6IhSHNGLUcbyxRjzrOawtFpd7eD9q16+Fe88cczjRFL38ghEayGU r04NzMSTcIU3WJ8+ueowUNpmrg7y/1jDkWw+fBCTv2Gjrj098xRriwSOzRhJiGgcx1xR 2lAw== X-Gm-Message-State: AOJu0YzpJicL7bKw02e9hcD6ui5eXagIzYAtoRovzl2sDugOuIzeBt62 vmPNC72rmdhfnCXIelJ5fyULS4y4FO7TseY0YkiwaCpMgFRLtdLOUB/X8kwELDAwag6MoZPVuGM S X-Google-Smtp-Source: AGHT+IFy5Km30Q98986e+5tVTnXU9tktojgubxmVGg5KyJX7Br5v1jkJg6lz3ZaTCrO+68zlks2ULQ== X-Received: by 2002:a05:6a20:2453:b0:1aa:965d:1332 with SMTP id adf61e73a8af0-1b212e135b8mr11059924637.26.1716771012038; Sun, 26 May 2024 17:50:12 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 12/28] target/i386: Split out do_xsave_chk Date: Sun, 26 May 2024 17:49:45 -0700 Message-Id: <20240527005001.642825-13-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::535; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x535.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771210010100003 Content-Type: text/plain; charset="utf-8" This path is not required by user-only, and can in fact be shared between xsave and xrstor. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/tcg/fpu_helper.c | 51 +++++++++++++++++++----------------- 1 file changed, 27 insertions(+), 24 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index 7796688514..6a319dadf2 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -2675,16 +2675,6 @@ static void do_xsave(CPUX86State *env, target_ulong = ptr, uint64_t rfbm, X86Access ac; unsigned size; =20 - /* The OS must have enabled XSAVE. */ - if (!(env->cr[4] & CR4_OSXSAVE_MASK)) { - raise_exception_ra(env, EXCP06_ILLOP, ra); - } - - /* The operand must be 64 byte aligned. */ - if (ptr & 63) { - raise_exception_ra(env, EXCP0D_GPF, ra); - } - /* Never save anything not enabled by XCR0. */ rfbm &=3D env->xcr0; opt &=3D rfbm; @@ -2721,15 +2711,35 @@ static void do_xsave(CPUX86State *env, target_ulong= ptr, uint64_t rfbm, access_stq(&ac, ptr + XO(header.xstate_bv), new_bv); } =20 +static void do_xsave_chk(CPUX86State *env, target_ulong ptr, uintptr_t ra) +{ + /* The OS must have enabled XSAVE. */ + if (!(env->cr[4] & CR4_OSXSAVE_MASK)) { + raise_exception_ra(env, EXCP06_ILLOP, ra); + } + + /* The operand must be 64 byte aligned. */ + if (ptr & 63) { + raise_exception_ra(env, EXCP0D_GPF, ra); + } +} + void helper_xsave(CPUX86State *env, target_ulong ptr, uint64_t rfbm) { - do_xsave(env, ptr, rfbm, get_xinuse(env), -1, GETPC()); + uintptr_t ra =3D GETPC(); + + do_xsave_chk(env, ptr, ra); + do_xsave(env, ptr, rfbm, get_xinuse(env), -1, ra); } =20 void helper_xsaveopt(CPUX86State *env, target_ulong ptr, uint64_t rfbm) { - uint64_t inuse =3D get_xinuse(env); - do_xsave(env, ptr, rfbm, inuse, inuse, GETPC()); + uintptr_t ra =3D GETPC(); + uint64_t inuse; + + do_xsave_chk(env, ptr, ra); + inuse =3D get_xinuse(env); + do_xsave(env, ptr, rfbm, inuse, inuse, ra); } =20 static void do_xrstor_fpu(X86Access *ac, target_ulong ptr) @@ -2900,16 +2910,6 @@ static void do_xrstor(CPUX86State *env, target_ulong= ptr, uint64_t rfbm, uintptr =20 rfbm &=3D env->xcr0; =20 - /* The OS must have enabled XSAVE. */ - if (!(env->cr[4] & CR4_OSXSAVE_MASK)) { - raise_exception_ra(env, EXCP06_ILLOP, ra); - } - - /* The operand must be 64 byte aligned. */ - if (ptr & 63) { - raise_exception_ra(env, EXCP0D_GPF, ra); - } - size =3D sizeof(X86LegacyXSaveArea) + sizeof(X86XSaveHeader); access_prepare(&ac, env, ptr, size, MMU_DATA_LOAD, ra); =20 @@ -3004,7 +3004,10 @@ static void do_xrstor(CPUX86State *env, target_ulong= ptr, uint64_t rfbm, uintptr =20 void helper_xrstor(CPUX86State *env, target_ulong ptr, uint64_t rfbm) { - do_xrstor(env, ptr, rfbm, GETPC()); + uintptr_t ra =3D GETPC(); + + do_xsave_chk(env, ptr, ra); + do_xrstor(env, ptr, rfbm, ra); } =20 #if defined(CONFIG_USER_ONLY) --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771073596607.7107924258977; Sun, 26 May 2024 17:51:13 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZM-0007HR-Nq; Sun, 26 May 2024 20:50:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBOZI-0007Cn-Ny for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:29 -0400 Received: from mail-oa1-x2c.google.com ([2001:4860:4864:20::2c]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sBOZ4-0003bj-7L for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:21 -0400 Received: by mail-oa1-x2c.google.com with SMTP id 586e51a60fabf-24ca0876a83so1543460fac.2 for ; Sun, 26 May 2024 17:50:13 -0700 (PDT) Received: from stoup.. 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Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/cpu.h | 4 ++-- linux-user/i386/signal.c | 4 ++-- target/i386/tcg/fpu_helper.c | 8 ++++---- 3 files changed, 8 insertions(+), 8 deletions(-) diff --git a/target/i386/cpu.h b/target/i386/cpu.h index c500a69a69..91170a088a 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -2262,8 +2262,8 @@ void cpu_x86_fsave(CPUX86State *s, target_ulong ptr, = int data32); void cpu_x86_frstor(CPUX86State *s, target_ulong ptr, int data32); void cpu_x86_fxsave(CPUX86State *s, target_ulong ptr); void cpu_x86_fxrstor(CPUX86State *s, target_ulong ptr); -void cpu_x86_xsave(CPUX86State *s, target_ulong ptr); -void cpu_x86_xrstor(CPUX86State *s, target_ulong ptr); +void cpu_x86_xsave(CPUX86State *s, target_ulong ptr, uint64_t rbfm); +void cpu_x86_xrstor(CPUX86State *s, target_ulong ptr, uint64_t rbfm); =20 /* cpu.c */ void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1, diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 990048f42a..824375d42a 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -268,7 +268,7 @@ static void xsave_sigcontext(CPUX86State *env, struct t= arget_fpstate_fxsave *fxs =20 /* Zero the header, XSAVE *adds* features to an existing save stat= e. */ memset(fxsave->xfeatures, 0, 64); - cpu_x86_xsave(env, fxsave_addr); + cpu_x86_xsave(env, fxsave_addr, -1); __put_user(TARGET_FP_XSTATE_MAGIC1, &fxsave->sw_reserved.magic1); __put_user(extended_size, &fxsave->sw_reserved.extended_size); __put_user(env->xcr0, &fxsave->sw_reserved.xfeatures); @@ -569,7 +569,7 @@ static int xrstor_sigcontext(CPUX86State *env, struct t= arget_fpstate_fxsave *fxs return 1; } if (tswapl(*(uint32_t *) &fxsave->xfeatures[xfeatures_size]) = =3D=3D TARGET_FP_XSTATE_MAGIC2) { - cpu_x86_xrstor(env, fxsave_addr); + cpu_x86_xrstor(env, fxsave_addr, -1); return 0; } } diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index 6a319dadf2..a09d6aaf07 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -3047,14 +3047,14 @@ void cpu_x86_fxrstor(CPUX86State *env, target_ulong= ptr) do_fxrstor(&ac, ptr); } =20 -void cpu_x86_xsave(CPUX86State *env, target_ulong ptr) +void cpu_x86_xsave(CPUX86State *env, target_ulong ptr, uint64_t rfbm) { - do_xsave(env, ptr, -1, get_xinuse(env), -1, 0); + do_xsave(env, ptr, rfbm, get_xinuse(env), -1, 0); } =20 -void cpu_x86_xrstor(CPUX86State *env, target_ulong ptr) +void cpu_x86_xrstor(CPUX86State *env, target_ulong ptr, uint64_t rfbm) { - do_xrstor(env, ptr, -1, 0); + do_xrstor(env, ptr, rfbm, 0); } #endif =20 --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1716771259; cv=none; d=zohomail.com; s=zohoarc; b=Bk9yvU79ccMDwrtPBNEcqRM/3WU1So28HsyrhnfnmbSrxPOTtUDcLfjdGIAAuYPC2wYZaavZBhkjNq4qUqyvPm6HA9eIJYsS0nl5UVX4eHb7BRT9Fg/ilk3/fw9LocF5DyXGQ9fgrgmzYedKk8t28RqTHj0102K7aSLvNXrfJTU= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1716771259; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=OR3Qa4eUXbe55AL25e+hfKaOaNfudQydQzuaT/Ly7pQ=; b=NGD66t7rRHQvUmWsAFU6FatZv9sTCp0n3zVSJDHshTHR+BYQDGua707xFOAXRTKq99O6TNnNuoHCgW3F6BQL7/42zokgOA/A+qE8Cb8p7X9nN2HEfaNOzbfArqDizR+JBFMpyZz2D8Y7PXmG9LLpUhzTBJuAZrCuZvx1lBoTE8I= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771259899187.33784494923634; Sun, 26 May 2024 17:54:19 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZb-0007VM-TR; Sun, 26 May 2024 20:50:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBOZJ-0007Cv-B4 for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:29 -0400 Received: from mail-pf1-x42e.google.com ([2607:f8b0:4864:20::42e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sBOZ5-0003dj-SV for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:26 -0400 Received: by mail-pf1-x42e.google.com with SMTP id d2e1a72fcca58-6f8e819a540so2617861b3a.0 for ; Sun, 26 May 2024 17:50:14 -0700 (PDT) Received: from stoup.. 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771014; x=1717375814; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=OR3Qa4eUXbe55AL25e+hfKaOaNfudQydQzuaT/Ly7pQ=; b=QlN/H1JMNM7d2UlxpEl112cpwwJJuLnGKilU494syglbThx9vlieBmimHHBmqomW4m k+1kxqqHpRmy1IFWq8WEQwj0ySWzeMBmc1iYbNSqg7yH0h7a1mcC6gg5tBndId+Ztrjd oqxd2qXaMCPcxiwFc33qgfXpbZJoCXks3zuoRWEB7Say8ceuMMmpcDkwi1jMQhEMowDY 8Yuo6d+1yW+3r/vqXlvfLTMKsIpiNJQatw3m/AD4+nzQH4xzV9faZiz08/3qWATZMK33 +x345jC/XiaN14VaqxA5V4xQ20xaD5NSC0u2YCzT61d0kA2pNBWftix3CjxKUTehGL70 cMrA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771014; x=1717375814; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=OR3Qa4eUXbe55AL25e+hfKaOaNfudQydQzuaT/Ly7pQ=; b=m01WpksiZBvNpZUAcwCxtYnU44ZnKYsFLrBQ1lYTLNAm6nZL1XwQsYN5hRCDlovnVc cOKrPssbt6N9yTbcMuFoEzYxtKcDy/ucGd88GbgmUm/UNYbiwWpcrU1jV/2tSkAy1rHl 3tOrgW9DaF2bMvg1CVO71x5SWHv9WWGU2GczePGHAtEmNBZZ78mDhC8+Qow3pFa+r/7x jVmjVwNRkyW0vlVIsJck6aDocbRmcDu+7kgDOhkwAq3rYjEkqYAFXRKV6q1IlUVXds0a 2UnReV9zMsZ3dvWhl2BnXVIrqnpERivvL0t3Hycp2phRjerRRZehgmRDr1VUawEO0Nij t5Xg== X-Gm-Message-State: AOJu0YxfkfAwDEo2bAwj9oWagYXhrKhyGPLl7YWfht/zScfwM/AD9k/J jsjsMWduWn5um6mC3vxPiDah+XskYMWSSvVuShbYYN+cd6mpBkyhYqVKg/u8qubidu3jHXUx4B6 C X-Google-Smtp-Source: AGHT+IFMjeTGv0XNN8iBop5Ue0/+RFuOxDRlu8O1N0507wrR+14CuezpSI1Sg25IXVgUyO4RLIZCsQ== X-Received: by 2002:a05:6a00:9099:b0:6f0:c828:8e0b with SMTP id d2e1a72fcca58-6f8f32b5a19mr9346291b3a.7.1716771013671; Sun, 26 May 2024 17:50:13 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 14/28] target/i386: Add {hw,sw}_reserved to X86LegacyXSaveArea Date: Sun, 26 May 2024 17:49:47 -0700 Message-Id: <20240527005001.642825-15-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42e; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42e.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771262007100007 Content-Type: text/plain; charset="utf-8" This completes the 512 byte structure, allowing the union to be removed. Assert that the structure layout is as expected. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/cpu.h | 39 +++++++++++++++++++++++++-------------- 1 file changed, 25 insertions(+), 14 deletions(-) diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 91170a088a..fdd318963a 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -1425,23 +1425,34 @@ typedef struct { */ #define UNASSIGNED_APIC_ID 0xFFFFFFFF =20 -typedef union X86LegacyXSaveArea { - struct { - uint16_t fcw; - uint16_t fsw; - uint8_t ftw; - uint8_t reserved; - uint16_t fpop; - uint64_t fpip; - uint64_t fpdp; - uint32_t mxcsr; - uint32_t mxcsr_mask; - FPReg fpregs[8]; - uint8_t xmm_regs[16][16]; +typedef struct X86LegacyXSaveArea { + uint16_t fcw; + uint16_t fsw; + uint8_t ftw; + uint8_t reserved; + uint16_t fpop; + union { + struct { + uint64_t fpip; + uint64_t fpdp; + }; + struct { + uint32_t fip; + uint32_t fcs; + uint32_t foo; + uint32_t fos; + }; }; - uint8_t data[512]; + uint32_t mxcsr; + uint32_t mxcsr_mask; + FPReg fpregs[8]; + uint8_t xmm_regs[16][16]; + uint32_t hw_reserved[12]; + uint32_t sw_reserved[12]; } X86LegacyXSaveArea; =20 +QEMU_BUILD_BUG_ON(sizeof(X86LegacyXSaveArea) !=3D 512); + typedef struct X86XSaveHeader { uint64_t xstate_bv; uint64_t xcomp_bv; --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1716771338; cv=none; d=zohomail.com; s=zohoarc; b=COLLm7uZaBlfoArAHd5a4YS3Tnc0tfZolmvoguR3/PKD5DdaXY1xS62s9CobPr5+1lWlFton3e6DF91ELAe7Dp5bugMRjEU7xYVWQQSHk3I9rLgtchSsU5uQhOzG0DtQL15HwgCg3XaBZP4lmvL2VJCqt9fhvClwx3FygaV6Wg0= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1716771338; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=8E9ppc4CUToY/h7916Bi0wG7cWa/ImlZUPMW1khZFpk=; b=l6NAqEBt2J2p5WuvbGmwlQXn/4PteqJJkA+ltC5HfPKZZ6vrTYbY7o2lZxXPVjkum7CjqZ50TMuAVnfR83+S3AF3RnUiJCKiK/SL/E93qDFvaM89jDiZGQMkZrk/HiuDpkkxVBdb1Z+FNTPslbPCQWVMWNvNlrYgwwWGuFNmZXQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771338594873.5591577371672; Sun, 26 May 2024 17:55:38 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZP-0007JQ-Dx; Sun, 26 May 2024 20:50:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBOZJ-0007Cw-CZ for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:29 -0400 Received: from mail-oa1-x33.google.com ([2001:4860:4864:20::33]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sBOZ6-0003eb-2e for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:25 -0400 Received: by mail-oa1-x33.google.com with SMTP id 586e51a60fabf-24ca079af98so1576427fac.3 for ; Sun, 26 May 2024 17:50:15 -0700 (PDT) Received: from stoup.. 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.13 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:14 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771015; x=1717375815; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=8E9ppc4CUToY/h7916Bi0wG7cWa/ImlZUPMW1khZFpk=; b=n5QFpQ8r8RYPj/ljCqCJButHZ9rHwdCauFzrsK4M+lo3nmfcj+quzbX+8HsGMS7Snk WjuXM3v/ayhcKsR5dH34t/RIPyDE7RFcTjCxh6StYqlG9jMHkOsmf0rNIgWZiyYr47ds 1qPGnlZPKEW/9lRnaMJ7Ux4Hjynb851KiBPPHK4aGJA4+L8tmVmNmTX6ffkrB8BjXcMZ wcheC2amVX88DVz9QRx8nKQiAuclPb2X34kbeqig6rX/n7sGSo1XWyL3KPsEUUdYylvO 6tjuEsNFNO518FuCe2ENW663RlfnKdkP3IAjCzlv1TXHdRLAGli5AmgPgo36JkJx1+S2 JCgA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771015; x=1717375815; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=8E9ppc4CUToY/h7916Bi0wG7cWa/ImlZUPMW1khZFpk=; b=OKvMD4IwhpgWtGf+zYrbGvgsLpPgq5QPsrFUkdmYzx7qYicOpffK9MjgLfeHIE2CLs ZJLDoKdYLPwVCcx+Dl5GAkgP5XmIrd13sNiOkygMwfaPTO4mo7EIjd8zYYaeYL/8EG81 8Hyor9YgYSEVM9EFlQegc3Mw9YxTHL24zXxeu3usfI1KACilwjqBli7dbj+ERxy9LvWo o/I3zl2cJVhyl4HzXbxOwqYJtKsOIFDaGn8oVYr+3ArFvzp8/L09UiYeeWfTjacLpSNh Neb5Qbk0KNJYh5ZHmZTaZo1zgjfA1Tkkaj15F8QONDg7DWmsjYf9B8Ue6Iou3gvNQ9Zj eHmA== X-Gm-Message-State: AOJu0YyOzeRPOCLaMtr0gOZgQU2Yc8nBYX3wq8OWVG7c8tmR1Vp5U4uy RZJzZYr9mQ3zAa2GQs0QJEiC2GcbtzK5YsdJuxvylXcDlJ9f714lljM3JCNoIdkC/6fqaR7OPpQ 5 X-Google-Smtp-Source: AGHT+IGUQGkQalTFH8QEX243yDgJu2YZd9kSnktp/0w4+znFhNtlvI8y3340x4/zi5JErTt1Xnnuhg== X-Received: by 2002:a05:6870:724c:b0:24f:cc89:9f7d with SMTP id 586e51a60fabf-24fcc89aca4mr4967508fac.29.1716771014619; Sun, 26 May 2024 17:50:14 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 15/28] linux-user/i386: Drop xfeatures_size from sigcontext arithmetic Date: Sun, 26 May 2024 17:49:48 -0700 Message-Id: <20240527005001.642825-16-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:4860:4864:20::33; envelope-from=richard.henderson@linaro.org; helo=mail-oa1-x33.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771340281100006 Content-Type: text/plain; charset="utf-8" This is subtracting sizeof(target_fpstate_fxsave) in TARGET_FXSAVE_SIZE, then adding it again via &fxsave->xfeatures. Perform the same computation using xstate_size alone. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- linux-user/i386/signal.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 824375d42a..89048ed069 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -253,7 +253,6 @@ static void xsave_sigcontext(CPUX86State *env, struct t= arget_fpstate_fxsave *fxs __put_user(0, &fxsave->sw_reserved.magic1); } else { uint32_t xstate_size =3D xsave_area_size(env->xcr0, false); - uint32_t xfeatures_size =3D xstate_size - TARGET_FXSAVE_SIZE; =20 /* * extended_size is the offset from fpstate_addr to right after th= e end @@ -273,7 +272,8 @@ static void xsave_sigcontext(CPUX86State *env, struct t= arget_fpstate_fxsave *fxs __put_user(extended_size, &fxsave->sw_reserved.extended_size); __put_user(env->xcr0, &fxsave->sw_reserved.xfeatures); __put_user(xstate_size, &fxsave->sw_reserved.xstate_size); - __put_user(TARGET_FP_XSTATE_MAGIC2, (uint32_t *) &fxsave->xfeature= s[xfeatures_size]); + __put_user(TARGET_FP_XSTATE_MAGIC2, + (uint32_t *)((void *)fxsave + xstate_size)); } } =20 @@ -559,7 +559,6 @@ static int xrstor_sigcontext(CPUX86State *env, struct t= arget_fpstate_fxsave *fxs if (env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE) { uint32_t extended_size =3D tswapl(fxsave->sw_reserved.extended_siz= e); uint32_t xstate_size =3D tswapl(fxsave->sw_reserved.xstate_size); - uint32_t xfeatures_size =3D xstate_size - TARGET_FXSAVE_SIZE; =20 /* Linux checks MAGIC2 using xstate_size, not extended_size. */ if (tswapl(fxsave->sw_reserved.magic1) =3D=3D TARGET_FP_XSTATE_MAG= IC1 && @@ -568,7 +567,7 @@ static int xrstor_sigcontext(CPUX86State *env, struct t= arget_fpstate_fxsave *fxs extended_size - TARGET_FPSTATE_FXSAVE_OFFSET)) { return 1; } - if (tswapl(*(uint32_t *) &fxsave->xfeatures[xfeatures_size]) = =3D=3D TARGET_FP_XSTATE_MAGIC2) { + if (tswapl(*(uint32_t *)((void *)fxsave + xstate_size)) =3D=3D= TARGET_FP_XSTATE_MAGIC2) { cpu_x86_xrstor(env, fxsave_addr, -1); return 0; } --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1716771270; cv=none; d=zohomail.com; s=zohoarc; b=ESpA0P35FEgZPTq+aCSHIimBHf7cHt6EQZpOEYvJN8ewjW9WqN1lb7E9bvCMOBEEqJuFjFkUonLKDlnR+wrP3cCZet1bEGSbbeTwCbYQNyz33fpzoLXqb+Wjz15ToognJzwevMm7d0HrHhDwSDydI7XRQ8ekXrn8hfK6VRFmcuI= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1716771270; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=cH8p7zFQoa8qKM/2WS7ZfbaGhkQJFlfpHgdlJuwcM/w=; b=DtaSo8BdM9P/40qESQG7fiPw8VcBT+jtRZnnAl47n7hDY+da6LII+xcOMP/suNBu0Iz3zQNi/ZzWVGNymoXr0ZNyG+9QCE/pxXQGEio8Kbciuvg0zMW7H17YdeFBYwYQmtR5jhTPaVveARwLF1fVsn8rJdcLkyc0PoUP3O8+gLQ= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771270939784.222791317747; Sun, 26 May 2024 17:54:30 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZb-0007SC-06; Sun, 26 May 2024 20:50:47 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBOZJ-0007Cp-8C for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:29 -0400 Received: from mail-pf1-x432.google.com ([2607:f8b0:4864:20::432]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sBOZ7-0003f1-TA for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:25 -0400 Received: by mail-pf1-x432.google.com with SMTP id d2e1a72fcca58-6f8e9870e72so2388820b3a.1 for ; Sun, 26 May 2024 17:50:16 -0700 (PDT) Received: from stoup.. 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.14 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771015; x=1717375815; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=cH8p7zFQoa8qKM/2WS7ZfbaGhkQJFlfpHgdlJuwcM/w=; b=LwdQg8ib+n6BafR6TW9s36jZHujxpgIkqjWOHt1X3PEnRlVGsISjGmcg/JV9bDrT7p jRGBZjfpxAyOpYyMIOD8CSU9vO/+M2r8IP56Ea50VlWW/VnkrLWtQttukiD/NemPEKSc Q4v2kAUUhvGAH6Bc7SKoBBoebIeSaJtCD6L/inH2UD0QcMDX0LEW58eJNbangTpi00rx 8GLlcjhhnOHvsBISpN6dtp9rZl+yU5m0kUMCj+5lUfz+qqSl186/EuIJH9ALX/jSHLjU +YHQPJ5ku8K73j6mE1siIBouRc3ioPSiybg4Ryi3NZcYQpeUrBmd30TO8ppHQnhlVW4W DcNg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771015; x=1717375815; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=cH8p7zFQoa8qKM/2WS7ZfbaGhkQJFlfpHgdlJuwcM/w=; b=LiQxO7q4plhYvMfP2UBFsNAbXNj5ghKUTS6afWE14JJLSV/SBXmSWw5GYxStrHMjmm 2tjbXADfR1phgu8RnPg7+j883oUviWjMfJbsUVyEPutlrd2D4KVxjIT46pwiz+oEegM7 oZtSNMxjl6qd6fBnZALfPtQDuJHSBLzzOlRcaNp0irEgqaZ/o3D8Tg2od9mSS3VaFk1s 3hTPgV7kDSvwMdCnGcQ+AhVnW4AHpclfYELUPeN5rLTTAmJfW+DIdF+Tw7tQaL1alrHd cso7y2JTt9MSuCk39VDVXKab9t6K0N+9j5+D8FCShI3G0yDd1paBKYV1zHMAjezFInEi vXdg== X-Gm-Message-State: AOJu0Yxt826r7y8qoI/DvoTHfvkTZAF6q0kDFfDbVl5wAbukai0lZAOZ MLcmkBuWQyJWg3RcXXNjEH5NkSwVlGk5HzIdzdSgbf+yRUJhMgUgOPesPIthYGmMcBb9QyDHx0n W X-Google-Smtp-Source: AGHT+IHPn3d4k39EEaLTJfcpFpdY4Zbr0JG2RGUUp2RFuHF/+s++Gnkx9iHh6ecy+jHCqdaNjILpJQ== X-Received: by 2002:a05:6a00:368a:b0:6f6:a417:fa44 with SMTP id d2e1a72fcca58-6f8f45d8ff2mr8400917b3a.29.1716771015417; Sun, 26 May 2024 17:50:15 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 16/28] linux-user/i386: Remove xfeatures from target_fpstate_fxsave Date: Sun, 26 May 2024 17:49:49 -0700 Message-Id: <20240527005001.642825-17-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::432; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x432.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771272045100005 Content-Type: text/plain; charset="utf-8" This is easily computed by advancing past the structure. At the same time, replace the magic number "64". Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- linux-user/i386/signal.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 89048ed069..f8064691c4 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -67,7 +67,6 @@ struct target_fpstate_fxsave { uint32_t xmm_space[64]; uint32_t hw_reserved[12]; struct target_fpx_sw_bytes sw_reserved; - uint8_t xfeatures[]; }; #define TARGET_FXSAVE_SIZE sizeof(struct target_fpstate_fxsave) QEMU_BUILD_BUG_ON(TARGET_FXSAVE_SIZE !=3D 512); @@ -266,7 +265,7 @@ static void xsave_sigcontext(CPUX86State *env, struct t= arget_fpstate_fxsave *fxs assert(!(fxsave_addr & 0x3f)); =20 /* Zero the header, XSAVE *adds* features to an existing save stat= e. */ - memset(fxsave->xfeatures, 0, 64); + memset(fxsave + 1, 0, sizeof(X86XSaveHeader)); cpu_x86_xsave(env, fxsave_addr, -1); __put_user(TARGET_FP_XSTATE_MAGIC1, &fxsave->sw_reserved.magic1); __put_user(extended_size, &fxsave->sw_reserved.extended_size); --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1716771052; cv=none; d=zohomail.com; s=zohoarc; b=LAiG5mN2P6oDYpIbzQrEsJ9mja2KYkuH+H1g/Io/MQArMt0THHdspS3BMlMoj0gNW8k1iOSYwYImtB/6OmWNh9ePURDldLoSmbEhAEP4a6DlJwPJmirLZwsEwT0s+7RZG7i/ItOyilbAnp+XySxafN0OTRzrjuIOHbLswhNeVj4= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1716771052; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=xXRJWnawluUaMF/jqhQVfylOquOPm+Y6SErtNaXDicY=; b=W9/cQJlghRkjeZIm0A81uGJ1PddpzltZqUvJ7h2D1pekxcWBexSq/vWOuIPUnFOBLPiJknqUFBXLe1mlxAhK2EX5ZO/lNML17trsEOpe7p+io99FCti6lbpqQYa7Gqbu53/7KKnE7qtxPVj5TnqHG0mRVHDpdICzMBvzNuJo0AA= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771052153403.3337963618352; Sun, 26 May 2024 17:50:52 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZW-0007Oc-9d; Sun, 26 May 2024 20:50:42 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBOZL-0007Fq-B7 for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:31 -0400 Received: from mail-pf1-x430.google.com ([2607:f8b0:4864:20::430]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sBOZA-0003fV-Kv for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:28 -0400 Received: by mail-pf1-x430.google.com with SMTP id d2e1a72fcca58-6f4ed9dc7beso3556813b3a.1 for ; Sun, 26 May 2024 17:50:17 -0700 (PDT) Received: from stoup.. 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771016; x=1717375816; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=xXRJWnawluUaMF/jqhQVfylOquOPm+Y6SErtNaXDicY=; b=b4O1nudJtOFX0Zi7e6V9/QJLssi+HOCxowJoIkkZfIvi+VSsY8UsmfuueVmsuayeXC jZCnDo4SvvvQZZp3wQD4DEMr8Ejl9SN4JB1ESkVdcFYW4nu3KYANOzHkoEEmQWLRHDVH rwhOnTxA0u4X9T8Co+os44hBjtaS3ym/8kZV/NnMMm7mfuUw0NxQn8d9L/7QEq8k/y5r 7/D4m62J5fWXCmIQFJQInipDxds8hszZABgYxWlHO0534vOJ+gKbcUJqPOYhU7y6N6/7 w83PGPDqw9kLY1xIEzO12UPWuasLbxUimBYkVev1t45KG4q02GnwVrOVT9qua2Ta5mHl Fc0A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771016; x=1717375816; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=xXRJWnawluUaMF/jqhQVfylOquOPm+Y6SErtNaXDicY=; b=iYOI8L8Mx/SU4gBq43Z0a/5dciUD0lQafj9mhc9UCCMc38zdo2FoObMTWYUd3dd1XS e3g9OgGI6EEEp3/fbAZY9KH6jTJ8ymThDlyEi9VUFBNeDC7EDtICYysxBQbp4UAl27xV GaImCRpNjzyZWkGuEsJRbBDvuyUynFrGz+w/zJ6WV34U5HBI7HJBuGKq2+r9L+dSf3OA YC8BE+23n4vCA7kJP2hkOKQVeunpiipFO0qW+gjzYP1OSAq2k5goEN1L4ZGqbQV2zZy7 T1N6PvxSZ9692QJ9mYtLI5WbTGdqOoGv3MvzWOvlQuIu94ZuyfmpQj9N2OpvlCYGbyGJ E3MA== X-Gm-Message-State: AOJu0Yw9ogQGI8zcPjk2pjIzPHQGSOdw0Jrd4rJWCibRBSjnbzpQGH6P TKgrr/+pk3UQkcweYYWxJw5qLXLMZHn1LrdmpbkB3ne/tgHtZ8dcTflOf+SNbdrYZ4C3nPVx+47 T X-Google-Smtp-Source: AGHT+IFlSB1uWWNm6vGyD5Nx/TfmbrkXZaTUY/z/Hgh1WtM4E4YRok4FTNNUuq1QylamrsOPu63asA== X-Received: by 2002:a05:6a00:2988:b0:6f3:ee23:3c39 with SMTP id d2e1a72fcca58-6f8e955aabfmr9721662b3a.7.1716771016140; Sun, 26 May 2024 17:50:16 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 17/28] linux-user/i386: Replace target_fpstate_fxsave with X86LegacyXSaveArea Date: Sun, 26 May 2024 17:49:50 -0700 Message-Id: <20240527005001.642825-18-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::430; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x430.google.com X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771053327100011 Content-Type: text/plain; charset="utf-8" Use the structure definition from target/i386/cpu.h. The only minor quirk is re-casting the sw_reserved area to the OS specific struct target_fpx_sw_bytes. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- linux-user/i386/signal.c | 71 +++++++++++++++------------------------- 1 file changed, 26 insertions(+), 45 deletions(-) diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index f8064691c4..5b1c570bff 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -34,16 +34,6 @@ struct target_fpreg { uint16_t exponent; }; =20 -struct target_fpxreg { - uint16_t significand[4]; - uint16_t exponent; - uint16_t padding[3]; -}; - -struct target_xmmreg { - uint32_t element[4]; -}; - struct target_fpx_sw_bytes { uint32_t magic1; uint32_t extended_size; @@ -53,25 +43,6 @@ struct target_fpx_sw_bytes { }; QEMU_BUILD_BUG_ON(sizeof(struct target_fpx_sw_bytes) !=3D 12*4); =20 -struct target_fpstate_fxsave { - /* FXSAVE format */ - uint16_t cw; - uint16_t sw; - uint16_t twd; - uint16_t fop; - uint64_t rip; - uint64_t rdp; - uint32_t mxcsr; - uint32_t mxcsr_mask; - uint32_t st_space[32]; - uint32_t xmm_space[64]; - uint32_t hw_reserved[12]; - struct target_fpx_sw_bytes sw_reserved; -}; -#define TARGET_FXSAVE_SIZE sizeof(struct target_fpstate_fxsave) -QEMU_BUILD_BUG_ON(TARGET_FXSAVE_SIZE !=3D 512); -QEMU_BUILD_BUG_ON(offsetof(struct target_fpstate_fxsave, sw_reserved) !=3D= 464); - struct target_fpstate_32 { /* Regular FPU environment */ uint32_t cw; @@ -84,7 +55,7 @@ struct target_fpstate_32 { struct target_fpreg st[8]; uint16_t status; uint16_t magic; /* 0xffff =3D regular FPU data only */ - struct target_fpstate_fxsave fxsave; + X86LegacyXSaveArea fxsave; }; =20 /* @@ -97,7 +68,7 @@ QEMU_BUILD_BUG_ON(offsetof(struct target_fpstate_32, fxsa= ve) & 15); # define target_fpstate target_fpstate_32 # define TARGET_FPSTATE_FXSAVE_OFFSET offsetof(struct target_fpstate_32, f= xsave) #else -# define target_fpstate target_fpstate_fxsave +# define target_fpstate X86LegacyXSaveArea # define TARGET_FPSTATE_FXSAVE_OFFSET 0 #endif =20 @@ -241,15 +212,17 @@ struct rt_sigframe { * Set up a signal frame. */ =20 -static void xsave_sigcontext(CPUX86State *env, struct target_fpstate_fxsav= e *fxsave, +static void xsave_sigcontext(CPUX86State *env, X86LegacyXSaveArea *fxsave, abi_ulong fxsave_addr) { + struct target_fpx_sw_bytes *sw =3D (void *)&fxsave->sw_reserved; + if (!(env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE)) { /* fxsave_addr must be 16 byte aligned for fxsave */ assert(!(fxsave_addr & 0xf)); =20 cpu_x86_fxsave(env, fxsave_addr); - __put_user(0, &fxsave->sw_reserved.magic1); + __put_user(0, &sw->magic1); } else { uint32_t xstate_size =3D xsave_area_size(env->xcr0, false); =20 @@ -267,10 +240,10 @@ static void xsave_sigcontext(CPUX86State *env, struct= target_fpstate_fxsave *fxs /* Zero the header, XSAVE *adds* features to an existing save stat= e. */ memset(fxsave + 1, 0, sizeof(X86XSaveHeader)); cpu_x86_xsave(env, fxsave_addr, -1); - __put_user(TARGET_FP_XSTATE_MAGIC1, &fxsave->sw_reserved.magic1); - __put_user(extended_size, &fxsave->sw_reserved.extended_size); - __put_user(env->xcr0, &fxsave->sw_reserved.xfeatures); - __put_user(xstate_size, &fxsave->sw_reserved.xstate_size); + __put_user(TARGET_FP_XSTATE_MAGIC1, &sw->magic1); + __put_user(extended_size, &sw->extended_size); + __put_user(env->xcr0, &sw->xfeatures); + __put_user(xstate_size, &sw->xstate_size); __put_user(TARGET_FP_XSTATE_MAGIC2, (uint32_t *)((void *)fxsave + xstate_size)); } @@ -384,9 +357,9 @@ get_sigframe(struct target_sigaction *ka, CPUX86State *= env, size_t fxsave_offset } =20 if (!(env->features[FEAT_1_EDX] & CPUID_FXSR)) { - return (esp - (fxsave_offset + TARGET_FXSAVE_SIZE)) & -8ul; + return (esp - (fxsave_offset + sizeof(X86LegacyXSaveArea))) & -8ul; } else if (!(env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE)) { - return ((esp - TARGET_FXSAVE_SIZE) & -16ul) - fxsave_offset; + return ((esp - sizeof(X86LegacyXSaveArea)) & -16ul) - fxsave_offse= t; } else { size_t xstate_size =3D xsave_area_size(env->xcr0, false) + TARGET_FP_XSTATE_MAGIC2= _SIZE; @@ -552,21 +525,29 @@ give_sigsegv: force_sigsegv(sig); } =20 -static int xrstor_sigcontext(CPUX86State *env, struct target_fpstate_fxsav= e *fxsave, +static int xrstor_sigcontext(CPUX86State *env, X86LegacyXSaveArea *fxsave, abi_ulong fxsave_addr) { + struct target_fpx_sw_bytes *sw =3D (void *)&fxsave->sw_reserved; + if (env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE) { - uint32_t extended_size =3D tswapl(fxsave->sw_reserved.extended_siz= e); - uint32_t xstate_size =3D tswapl(fxsave->sw_reserved.xstate_size); + uint32_t magic1 =3D tswapl(sw->magic1); + uint32_t extended_size =3D tswapl(sw->extended_size); + uint32_t xstate_size =3D tswapl(sw->xstate_size); + uint32_t minimum_size =3D (TARGET_FPSTATE_FXSAVE_OFFSET + + TARGET_FP_XSTATE_MAGIC2_SIZE + + xstate_size); + uint32_t magic2; =20 /* Linux checks MAGIC2 using xstate_size, not extended_size. */ - if (tswapl(fxsave->sw_reserved.magic1) =3D=3D TARGET_FP_XSTATE_MAG= IC1 && - extended_size >=3D TARGET_FPSTATE_FXSAVE_OFFSET + xstate_size = + TARGET_FP_XSTATE_MAGIC2_SIZE) { + if (magic1 =3D=3D TARGET_FP_XSTATE_MAGIC1 + && extended_size >=3D minimum_size) { if (!access_ok(env_cpu(env), VERIFY_READ, fxsave_addr, extended_size - TARGET_FPSTATE_FXSAVE_OFFSET)) { return 1; } - if (tswapl(*(uint32_t *)((void *)fxsave + xstate_size)) =3D=3D= TARGET_FP_XSTATE_MAGIC2) { + magic2 =3D tswapl(*(uint32_t *)((void *)fxsave + xstate_size)); + if (magic2 =3D=3D TARGET_FP_XSTATE_MAGIC2) { cpu_x86_xrstor(env, fxsave_addr, -1); 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.16 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771017; x=1717375817; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=d+kCzCPFmRVWagKLDLCR1Cq5shqRDzyNhJ9IIrqSVUo=; b=YI6mF0Lhy66Q/lM7wIu/McvIbDz7GFS6AcMi3f5vfBWo/NyS8nBdGILnN4A86iP3uw cSntUTRb0OAIkjb8UimiveLYgHtV2DC4hdhEnMESp8XrO65o+EUuurT1kX13tu16H4+O 4IiZRhBblH/SZ/VEsXlWsPOQjyzQo5PGivZMqyHIBEzrp/1q5gmR9zOEy7kGEgUE5y74 6GDbwnzEeFvjwV9yoME8CVFeYccoeeNfvOgjxeVIpB+1IekXPjL9zxvBA4x9haJiD4wd NWij7zwaHSXglpLCOfwp8FuD+XIZv4qjW4yRCMiXDhMmJdqUQ3IpbT8ny3hAKtvDemyo XWZQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771017; x=1717375817; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::329; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x329.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771274094100011 Content-Type: text/plain; charset="utf-8" Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- linux-user/i386/signal.c | 43 +++++++++++++++++++++++----------------- 1 file changed, 25 insertions(+), 18 deletions(-) diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 5b1c570bff..3271ebd333 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -34,6 +34,23 @@ struct target_fpreg { uint16_t exponent; }; =20 +/* Legacy x87 fpu state format for FSAVE/FRESTOR. */ +struct target_fregs_state { + uint32_t cwd; + uint32_t swd; + uint32_t twd; + uint32_t fip; + uint32_t fcs; + uint32_t foo; + uint32_t fos; + struct target_fpreg st[8]; + + /* Software status information [not touched by FSAVE]. */ + uint16_t status; + uint16_t magic; /* 0xffff: FPU data only, 0x0000: FXSR FPU data */ +}; +QEMU_BUILD_BUG_ON(sizeof(struct target_fregs_state) !=3D 32 + 80); + struct target_fpx_sw_bytes { uint32_t magic1; uint32_t extended_size; @@ -44,29 +61,19 @@ struct target_fpx_sw_bytes { QEMU_BUILD_BUG_ON(sizeof(struct target_fpx_sw_bytes) !=3D 12*4); =20 struct target_fpstate_32 { - /* Regular FPU environment */ - uint32_t cw; - uint32_t sw; - uint32_t tag; - uint32_t ipoff; - uint32_t cssel; - uint32_t dataoff; - uint32_t datasel; - struct target_fpreg st[8]; - uint16_t status; - uint16_t magic; /* 0xffff =3D regular FPU data only */ - X86LegacyXSaveArea fxsave; + struct target_fregs_state fpstate; + X86LegacyXSaveArea fxstate; }; =20 /* * For simplicity, setup_frame aligns struct target_fpstate_32 to * 16 bytes, so ensure that the FXSAVE area is also aligned. */ -QEMU_BUILD_BUG_ON(offsetof(struct target_fpstate_32, fxsave) & 15); +QEMU_BUILD_BUG_ON(offsetof(struct target_fpstate_32, fxstate) & 15); =20 #ifndef TARGET_X86_64 # define target_fpstate target_fpstate_32 -# define TARGET_FPSTATE_FXSAVE_OFFSET offsetof(struct target_fpstate_32, f= xsave) +# define TARGET_FPSTATE_FXSAVE_OFFSET offsetof(struct target_fpstate_32, f= xstate) #else # define target_fpstate X86LegacyXSaveArea # define TARGET_FPSTATE_FXSAVE_OFFSET 0 @@ -279,15 +286,15 @@ static void setup_sigcontext(struct target_sigcontext= *sc, __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss); =20 cpu_x86_fsave(env, fpstate_addr, 1); - fpstate->status =3D fpstate->sw; + fpstate->fpstate.status =3D fpstate->fpstate.swd; if (!(env->features[FEAT_1_EDX] & CPUID_FXSR)) { magic =3D 0xffff; } else { - xsave_sigcontext(env, &fpstate->fxsave, + xsave_sigcontext(env, &fpstate->fxstate, fpstate_addr + TARGET_FPSTATE_FXSAVE_OFFSET); magic =3D 0; } - __put_user(magic, &fpstate->magic); + __put_user(magic, &fpstate->fpstate.magic); #else __put_user(env->regs[R_EDI], &sc->rdi); __put_user(env->regs[R_ESI], &sc->rsi); @@ -623,7 +630,7 @@ restore_sigcontext(CPUX86State *env, struct target_sigc= ontext *sc) cpu_x86_frstor(env, fpstate_addr, 1); err =3D 0; } else { - err =3D xrstor_sigcontext(env, &fpstate->fxsave, + err =3D xrstor_sigcontext(env, &fpstate->fxstate, fpstate_addr + TARGET_FPSTATE_FXSAVE_O= FFSET); } #else --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1716771193; cv=none; d=zohomail.com; s=zohoarc; b=fGg8x5KIUHeBOooRDMNYehOxa35yrOAee3Qlgi5Q0pj3k16mjikcWktIElDque/GS6OW7qRilm1PMnWoNOm9NiDHKjpQ2EZNbTwPoqH5cyuylzRD91oIbsXgTj5DSAIiMRGcRhax1ctz+6tcO7Vil3Me2k+Ro8e9BrpfD6tKGSI= ARC-Message-Signature: i=1; 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.17 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771018; x=1717375818; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=8IG0If/b6VQnjtJdCAv7RGvLxbc+5Pp5q/Lqtx4PykE=; b=iVrM/WD2g65tknkzf3E5/0q7d3H3yJWmlQ1u6LJu4OYTmcFx51WT1ehEI1Y/ZlwztK hYK+G5T+lU6HIp7UcpAf5pmMob1yXCMGnDR3YQJXOCbIS0q2VgZhwP3t6+q8MBpNADoE DXQESb3+6jn9FOTci9j+Pqpn9bOyhi2de5AQ3yI100tmdr+JWQEBEo29ols/qZg2CFNM Y43bnBxBqQ0Q+YDlqlI7iaZT/8y5xWeIIIh14n3Mv13lsJ+Xw4pKfumNwzUQJJVS95aX Ug2hF91CfgUwyXim276VgqJatklQKj+ZuOHJZ1SiZrChHtOMSSjkp/bhtjKeX80yQf71 ui2w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771018; x=1717375818; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=8IG0If/b6VQnjtJdCAv7RGvLxbc+5Pp5q/Lqtx4PykE=; b=wPMz8DUO83F35egoHhmppPTLJ34PGYzvjmgITJ1sxSLGjlhweOH8uV6OTPK/+2tHjw UnTvQAQ1muEuT12DCqeXgfzcqj/qXVsxX3/SABYDFNw2x2KWe2Eugqr3N1ztZ8GdNiXd owtk0x82ogsd4nUgkgYAvKIb+vP8KZIKwLMV3ypFaxWVVFO0Wxgn4iBce/tzdZWoJJGj CN0lMiOoROm3alfoNh0G2gO49FO8op9PiBE7/TWs7uz2IjjrfdDNB+GmAlEbNHLW3fC/ kQLgYlBXoDQJH9GNxQTfQcgh2gOZNXqFmLA0j6QGRN3Y97BO3g+CqSfT/ewnn3isACAP pHdg== X-Gm-Message-State: AOJu0YweXY0uNTio3iG6OQpFytZ9VYf0K+O7Vf7yU42ML30Yl7vKaJcd Z2Avjfg6Otq+zuSkvBKeXrU2vs0nZJ8kPRaqGTyKgIepEhRuE2id0N9ZGmZwVfgFOf6+eLXNEfT c X-Google-Smtp-Source: AGHT+IHOzXSGAkfuVgvrA0NDzYacDioxZLv89OVsnHJQaYwrXhdgQ+OZVWQgtV1ayusHK2YJnYHcTA== X-Received: by 2002:a05:6870:958f:b0:23c:ffe8:a80c with SMTP id 586e51a60fabf-24ca14860bfmr8722713fac.52.1716771017675; Sun, 26 May 2024 17:50:17 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 19/28] linux-user/i386: Fix -mregparm=3 for signal delivery Date: Sun, 26 May 2024 17:49:52 -0700 Message-Id: <20240527005001.642825-20-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::333; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x333.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771193756100001 Content-Type: text/plain; charset="utf-8" Since v2.6.19, the kernel has supported -mregparm=3D3. Signed-off-by: Richard Henderson --- linux-user/i386/signal.c | 24 +++++++++++------------- 1 file changed, 11 insertions(+), 13 deletions(-) diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 3271ebd333..6763b4bda8 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -405,8 +405,6 @@ void setup_frame(int sig, struct target_sigaction *ka, if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) goto give_sigsegv; =20 - __put_user(sig, &frame->sig); - setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0], frame_addr + offsetof(struct sigframe, fpstate)); =20 @@ -428,6 +426,13 @@ void setup_frame(int sig, struct target_sigaction *ka, env->regs[R_ESP] =3D frame_addr; env->eip =3D ka->_sa_handler; =20 + /* Store argument for both -mregparm=3D3 and standard. */ + env->regs[R_EAX] =3D sig; + __put_user(sig, &frame->sig); + /* The kernel clears EDX and ECX even though there is only one arg. */ + env->regs[R_EDX] =3D 0; + env->regs[R_ECX] =3D 0; + cpu_x86_load_seg(env, R_DS, __USER_DS); cpu_x86_load_seg(env, R_ES, __USER_DS); cpu_x86_load_seg(env, R_SS, __USER_DS); @@ -449,9 +454,6 @@ void setup_rt_frame(int sig, struct target_sigaction *k= a, target_sigset_t *set, CPUX86State *env) { abi_ulong frame_addr; -#ifndef TARGET_X86_64 - abi_ulong addr; -#endif struct rt_sigframe *frame; int i; =20 @@ -461,14 +463,6 @@ void setup_rt_frame(int sig, struct target_sigaction *= ka, if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) goto give_sigsegv; =20 - /* These fields are only in rt_sigframe on 32 bit */ -#ifndef TARGET_X86_64 - __put_user(sig, &frame->sig); - addr =3D frame_addr + offsetof(struct rt_sigframe, info); - __put_user(addr, &frame->pinfo); - addr =3D frame_addr + offsetof(struct rt_sigframe, uc); - __put_user(addr, &frame->puc); -#endif if (ka->sa_flags & TARGET_SA_SIGINFO) { frame->info =3D *info; } @@ -508,9 +502,13 @@ void setup_rt_frame(int sig, struct target_sigaction *= ka, env->eip =3D ka->_sa_handler; =20 #ifndef TARGET_X86_64 + /* Store arguments for both -mregparm=3D3 and standard. */ env->regs[R_EAX] =3D sig; + __put_user(sig, &frame->sig); env->regs[R_EDX] =3D frame_addr + offsetof(struct rt_sigframe, info); + __put_user(env->regs[R_EDX], &frame->pinfo); env->regs[R_ECX] =3D frame_addr + offsetof(struct rt_sigframe, uc); + __put_user(env->regs[R_ECX], &frame->puc); #else env->regs[R_EAX] =3D 0; env->regs[R_EDI] =3D sig; --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1716771251; cv=none; d=zohomail.com; s=zohoarc; b=h/Ny+FKDGYGADiFJeSGnElRJk482kqt+aaiXdOalEM4AZE3lL1cyGCWRk1+LyT9L30xMI1bxSLD3+bCc/bRpiRm1sla0T6EE4hlpMIyz9Wf0BhGywECmNN8X/Cl0gKI9A8Ix7nRiVGEhqCwbOXHA5B0K8gd027fPHskxZxh3GGA= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1716771251; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=A/3mRVbjkwDF9eBMMUHlCcFHLaNSo0keoR5CYS7AGJ4=; b=C3yKMDydVkRGZiYJJilbx2LWlU/CXQHo+7axJQBfDNTXnf7/YA3aVw7Nz+rWyYF8HCAqyusNBwbA83hKqlaDHEFEc5JQ+vMTkEhTyzMCcLCicC/aiBllHUr+R7G6Fwaw0TLGF/z/oei3v6NDF4yQ4gCxdB8FmmvAphs6PxNFjXU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771251380789.980726215896; Sun, 26 May 2024 17:54:11 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZM-0007HH-I8; Sun, 26 May 2024 20:50:32 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBOZJ-0007Cq-94 for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:29 -0400 Received: from mail-oa1-x30.google.com ([2001:4860:4864:20::30]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sBOZA-0003ga-Im for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:24 -0400 Received: by mail-oa1-x30.google.com with SMTP id 586e51a60fabf-24ca21014ccso1196450fac.1 for ; Sun, 26 May 2024 17:50:19 -0700 (PDT) Received: from stoup.. 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771018; x=1717375818; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=A/3mRVbjkwDF9eBMMUHlCcFHLaNSo0keoR5CYS7AGJ4=; b=b4tx9VX2ipo3QWJaCnvPeV8jHd8yj1SiW2CVowcTU/pl05dR1wZRAxJ4b0A1aoz78s Qx/8U4UVQJI4uuFO0Tse14J3qSIbBN3rdBnJbIL+zw1aAVxjBfsxCkz/km3W+/+rwFSe OKT2CUUM5N/py7AuR1uE63mlxnYcpDwh4AIma4D1GAblyPcrEVg7AD7nm05hCrddMVH8 jqBrXEGQSuR3EyB6SWnMlJ/A3Pzjrwp7kvdrztiJxGfbxFJxeyHbqhubldZNXQImY7zp k+1zofvqLl4Vu/vNQtb6I1DKFFnjLRSWp1Q14ZzK17COZVFBJbG5yn25NQ6/ItrXhDGA sZ/w== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771018; x=1717375818; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=A/3mRVbjkwDF9eBMMUHlCcFHLaNSo0keoR5CYS7AGJ4=; b=UsO1NYG6zmEr+RLLSSEBpBbHqG19etmpyx00tB2VAtzJdZGtGS/7Wu/4aiiNkBxFnn nD2lWsePvwJd6dhYn7h0wfNqaoDS517lqX0mQ/SpWSRYBmo8cwxZ1H283eNk5/B7rSyj QNSNZzQuVw7jvzkwlxrcRFjaIDUhny4fHjD0aFEgxgvqYxTer3mrBIu5jFFK5AD6eb9U btJEC27S+xO9CAT7yo3UAa7zk4sqvLwsAiuWVcVgyamaGaGnn3bMSJEx/EehmPjAk6Pi dAOcj8qWvHfKMfLZqOAomcrBoXowfIGp1I2jv2CVsICo/uhKbu2AV+4eKfGWBJPfaBtB GZ9A== X-Gm-Message-State: AOJu0Yx9OLcOdEpULJP9qO9iOmMtu4dAWwPy5D6XEapOmHQWsFDu0VNm O0u+NTt8lNiCxfc5G9ZcxqZ55StgguctACyRDmSdMlKb2wVacEX59dT+14xnnzStehuzFljOPEt H X-Google-Smtp-Source: AGHT+IFA2iVpuarcuYSqSufpVwNrRJR1oc/ymReMRy4jXMKIE+b98HZvw+ZA5QwO7USzbFcaK6mcyg== X-Received: by 2002:a05:6870:e256:b0:24f:ef6b:353e with SMTP id 586e51a60fabf-24fef6b7416mr2348778fac.36.1716771018523; Sun, 26 May 2024 17:50:18 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 20/28] linux-user/i386: Return boolean success from restore_sigcontext Date: Sun, 26 May 2024 17:49:53 -0700 Message-Id: <20240527005001.642825-21-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:4860:4864:20::30; envelope-from=richard.henderson@linaro.org; helo=mail-oa1-x30.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771251987100001 Content-Type: text/plain; charset="utf-8" Invert the sense of the return value and use bool. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- linux-user/i386/signal.c | 51 ++++++++++++++++++++-------------------- 1 file changed, 25 insertions(+), 26 deletions(-) diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 6763b4bda8..9e6d883ea1 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -564,12 +564,12 @@ static int xrstor_sigcontext(CPUX86State *env, X86Leg= acyXSaveArea *fxsave, return 0; } =20 -static int -restore_sigcontext(CPUX86State *env, struct target_sigcontext *sc) +static bool restore_sigcontext(CPUX86State *env, struct target_sigcontext = *sc) { - int err =3D 1; abi_ulong fpstate_addr; unsigned int tmpflags; + struct target_fpstate *fpstate; + bool ok; =20 #ifndef TARGET_X86_64 cpu_x86_load_seg(env, R_GS, tswap16(sc->gs)); @@ -617,29 +617,27 @@ restore_sigcontext(CPUX86State *env, struct target_si= gcontext *sc) // regs->orig_eax =3D -1; /* disable syscall check= s */ =20 fpstate_addr =3D tswapl(sc->fpstate); - if (fpstate_addr !=3D 0) { - struct target_fpstate *fpstate; - if (!lock_user_struct(VERIFY_READ, fpstate, fpstate_addr, - sizeof(struct target_fpstate))) { - return err; - } -#ifndef TARGET_X86_64 - if (!(env->features[FEAT_1_EDX] & CPUID_FXSR)) { - cpu_x86_frstor(env, fpstate_addr, 1); - err =3D 0; - } else { - err =3D xrstor_sigcontext(env, &fpstate->fxstate, - fpstate_addr + TARGET_FPSTATE_FXSAVE_O= FFSET); - } -#else - err =3D xrstor_sigcontext(env, fpstate, fpstate_addr); -#endif - unlock_user_struct(fpstate, fpstate_addr, 0); - } else { - err =3D 0; + if (fpstate_addr =3D=3D 0) { + return true; } + if (!lock_user_struct(VERIFY_READ, fpstate, fpstate_addr, + sizeof(struct target_fpstate))) { + return false; + } +#ifndef TARGET_X86_64 + if (!(env->features[FEAT_1_EDX] & CPUID_FXSR)) { + cpu_x86_frstor(env, fpstate_addr, 1); + ok =3D true; + } else { + ok =3D !xrstor_sigcontext(env, &fpstate->fxstate, + fpstate_addr + TARGET_FPSTATE_FXSAVE_OFFSE= T); + } +#else + ok =3D !xrstor_sigcontext(env, fpstate, fpstate_addr); +#endif + unlock_user_struct(fpstate, fpstate_addr, 0); =20 - return err; + return ok; } =20 /* Note: there is no sigreturn on x86_64, there is only rt_sigreturn */ @@ -665,8 +663,9 @@ long do_sigreturn(CPUX86State *env) set_sigmask(&set); =20 /* restore registers */ - if (restore_sigcontext(env, &frame->sc)) + if (!restore_sigcontext(env, &frame->sc)) { goto badframe; + } unlock_user_struct(frame, frame_addr, 0); return -QEMU_ESIGRETURN; =20 @@ -690,7 +689,7 @@ long do_rt_sigreturn(CPUX86State *env) target_to_host_sigset(&set, &frame->uc.tuc_sigmask); set_sigmask(&set); =20 - if (restore_sigcontext(env, &frame->uc.tuc_mcontext)) { + if (!restore_sigcontext(env, &frame->uc.tuc_mcontext)) { goto badframe; } =20 --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:18 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771019; x=1717375819; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=gXRsFZySXvSqPrOv+ZAPgTOAgNl/fCJyejJjD81KENM=; b=eOWZXK176K0uKHlxveEv8uNAnvORbSMoSnhkJ6dJKfsN2h8UA684Fp1iGwlXd8FXpm MPKyl5B6AGDS0G5ObwcB5Ym2yoCdaA/buDO41RdWuWZGyL5gFPWpSkMWB3H6pmeYlKw5 5FwE1E0FHSL8UOa6/eWO4Hx2tk/uqVaGbYwxaXslWzOIMv+8qXMI7VdiTU9BjcorarL/ 4xR0S9Sswy4gvE1/eHi9Rf+Gic8VPJpKc9IxmLmSKEq/2TkXY3vG1AjfhyyZfzX3tuZP E+ABbbI/B779nOQO/FLHwJL3N7TWhh5CSomq35PPy0yID9mhLeUO+ULIndjE/cTbz2Bq bRhw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771019; x=1717375819; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=gXRsFZySXvSqPrOv+ZAPgTOAgNl/fCJyejJjD81KENM=; b=Wb8WDqI924+BJXMrNWDULbeQOJKEIOj+PSAGZrvA9H7wploR/PI3qQ+YeGhDPgXF3H tum3SaMZLPGlwWYnj1gF3U3MBv5ccfGXEcZfS4R4cjocOjx+qjLRuxfFNZzWr3Ws1J8N G9L6YqNg5KjKv2mlrgdA9Jwx9eiUoVhZDzSxq1aX1h+TlfMADDChhJuyLBcH7VFxQIis tgAkVxolZGN1DiKrrMS57dI7C51DxwSIEjaazQmr059iUEjfFZT2U4kkRCmYxw2/doIq CnjsZnve5sjar4wPDWQFKp5tzu0XVpfhKHLtrEFJ+fmxqMcavq2xjQcrxWcyTuwWok2H Tl2Q== X-Gm-Message-State: AOJu0Yz3/KHC21akUz46gT0M7dS9fl1a5JySLM4hJpTt4wqrXF5BU7u4 Rvy/JaR4PScuWL6DJzncfIQCyOkb/jqdgiup/5OvIMQJz5lWv5bsc+cPz3ubpF4dy7T3n4q+72E 1 X-Google-Smtp-Source: AGHT+IHOTCePmeGCrV4hA1L3PAxSyNm/x/SHMgb72ai8+EnpFf8d4+Kbpsfk/hB1JfLZ9txMtXghRg== X-Received: by 2002:a05:6a00:4603:b0:701:78af:4a72 with SMTP id d2e1a72fcca58-70178af5edfmr1219498b3a.0.1716771019202; Sun, 26 May 2024 17:50:19 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 21/28] linux-user/i386: Return boolean success from xrstor_sigcontext Date: Sun, 26 May 2024 17:49:54 -0700 Message-Id: <20240527005001.642825-22-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42b; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42b.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771165668100003 Content-Type: text/plain; charset="utf-8" Invert the sense of the return value and use bool. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- linux-user/i386/signal.c | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 9e6d883ea1..03031ef9e5 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -530,8 +530,8 @@ give_sigsegv: force_sigsegv(sig); } =20 -static int xrstor_sigcontext(CPUX86State *env, X86LegacyXSaveArea *fxsave, - abi_ulong fxsave_addr) +static bool xrstor_sigcontext(CPUX86State *env, X86LegacyXSaveArea *fxsave, + abi_ulong fxsave_addr) { struct target_fpx_sw_bytes *sw =3D (void *)&fxsave->sw_reserved; =20 @@ -549,19 +549,19 @@ static int xrstor_sigcontext(CPUX86State *env, X86Leg= acyXSaveArea *fxsave, && extended_size >=3D minimum_size) { if (!access_ok(env_cpu(env), VERIFY_READ, fxsave_addr, extended_size - TARGET_FPSTATE_FXSAVE_OFFSET)) { - return 1; + return false; } magic2 =3D tswapl(*(uint32_t *)((void *)fxsave + xstate_size)); if (magic2 =3D=3D TARGET_FP_XSTATE_MAGIC2) { cpu_x86_xrstor(env, fxsave_addr, -1); - return 0; + return true; } } /* fall through to fxrstor */ } =20 cpu_x86_fxrstor(env, fxsave_addr); - return 0; + return true; } =20 static bool restore_sigcontext(CPUX86State *env, struct target_sigcontext = *sc) @@ -629,11 +629,11 @@ static bool restore_sigcontext(CPUX86State *env, stru= ct target_sigcontext *sc) cpu_x86_frstor(env, fpstate_addr, 1); ok =3D true; } else { - ok =3D !xrstor_sigcontext(env, &fpstate->fxstate, - fpstate_addr + TARGET_FPSTATE_FXSAVE_OFFSE= T); + ok =3D xrstor_sigcontext(env, &fpstate->fxstate, + fpstate_addr + TARGET_FPSTATE_FXSAVE_OFFSET= ); } #else - ok =3D !xrstor_sigcontext(env, fpstate, fpstate_addr); + ok =3D xrstor_sigcontext(env, fpstate, fpstate_addr); #endif unlock_user_struct(fpstate, fpstate_addr, 0); =20 --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1716771242; cv=none; d=zohomail.com; s=zohoarc; b=gTYSz9LToPIoeXiJ7Z3jcQMx9TSQfy+pgsEA4vjUVjzNrLwNAw3JzfODvsKZhOtrWLxK7rsTfrcXqvEyfcBLnU6NKY8BNuriSLEbUFw+8lyty/Fr1aW9IDKD2t8JnTLDnaEAaztg+yzzZV4+n8y7HGFPjKektuZjo1ZMTs5XlOg= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1716771242; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=Ghov/wCmxvXS99JBMiQ1sl0ygxg1RM2Q5bBNhtIYkK8=; b=TZSQckzkI70h1WxxWL04QKexzCSSUH0C3ibyQyZLQGG1K0pYNIi3zOuApDKgTIcy/wKM38KIgJXT1DSpRiAEKJ0M+jeLXUzQ3I2L5Nj1kBILQTb2snPy2MFdrUyvAzYVLi0wgBn554PMblYJyohCOcCONTQh57B/rFakJKJCg8Y= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771242793646.2951494320116; Sun, 26 May 2024 17:54:02 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZc-0007X4-Qw; Sun, 26 May 2024 20:50:48 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBOZM-0007HN-Lj for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:32 -0400 Received: from mail-pf1-x42e.google.com ([2607:f8b0:4864:20::42e]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sBOZE-0003hK-6u for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:32 -0400 Received: by mail-pf1-x42e.google.com with SMTP id d2e1a72fcca58-6f69422c090so5484799b3a.2 for ; Sun, 26 May 2024 17:50:21 -0700 (PDT) Received: from stoup.. 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771021; x=1717375821; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Ghov/wCmxvXS99JBMiQ1sl0ygxg1RM2Q5bBNhtIYkK8=; b=XLFfxu/chRPtLpnM5rvjsfaHbGH6tUoZuP9Bg0e9wm5/QZOO3Ul4gzAje26VlK0KrM FUEvmu9yMxJD8zVWr1KzXyxsHoprXnAXoi+3gdUzHnipE386w0J8B8hyz1d+RpV9D+NA OjvBwfdfpw/FXwJv/BlXWQovySA2QMMpVoqpKRVqWdJ1THfgbJwx4DYPUNpNo76oKT0N LqScNC8Gf5UzqDAyno8KmTNIXaZuylpYiDD95XUKHeX1lhRvOJUQCKux2mhyAVlRH2Mt bMiaRUsTdnVnBgL5eFjeWt1msHgbMiWzjLcVwokJgGZWx9Nm0vyFPZKtO7U7rLzLNV8x USUw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771021; x=1717375821; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Ghov/wCmxvXS99JBMiQ1sl0ygxg1RM2Q5bBNhtIYkK8=; b=GjG724zWfxT3yQp+8dZqGKnQsDUZinaP0r9JF1XGriwKnT4gd85bef8AAwCIw0UeNi urJcCnwhEMKI/mTjaogL0n1dUwceeq68G0vP1rlh6GRt7By2gNYQK8ye399KKPs5g7jf vG9HGLzA1itjzglaBEHKbmdE8BlTXUUrhNbzO3nwXqnzf4q49RjUtRBWh42Pmj0WHILd m6PWCqBbUiBAKgLfWW+KMlqtnTVDuNZ0uTWt84NrsP7s/5aonulpMMoHZxkLD3MX36Zw HmdvokamRqUUM97Idorse6KPZib9TPJsdYPX6tH6cekYzNGeJc4hYxCLtWFQDIT9jXxY l8cQ== X-Gm-Message-State: AOJu0YwRC3K68q2/Fl7YF95gQLHwFyUu98YmTLKryXtE744xil/kLNRq I7jmEFDsE92U9+J0FyIbhvMBLy8MC3lfCEhNYlCQms8f6nyZmZivQ/HNwFwQrH3KQo6XlIjONSr K X-Google-Smtp-Source: AGHT+IHPxoWhCw64yAhoNEMF3MnwaUD2Nk68aT2i8Dp3UEcvZjUFL2WmT+L3gfm8YpRj0GMmHZM9pQ== X-Received: by 2002:a05:6a00:27a7:b0:6f3:ecdc:2248 with SMTP id d2e1a72fcca58-6f8f3f8a707mr8436546b3a.27.1716771020183; Sun, 26 May 2024 17:50:20 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 22/28] linux-user/i386: Fix allocation and alignment of fp state Date: Sun, 26 May 2024 17:49:55 -0700 Message-Id: <20240527005001.642825-23-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42e; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42e.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771244005100003 Content-Type: text/plain; charset="utf-8" For modern cpus, the kernel uses xsave to store all extra cpu state across the signal handler. For xsave/xrstor to work, the pointer must be 64 byte aligned. Moreover, the regular part of the signal frame must be 16 byte aligned. Attempt to mirror the kernel code as much as possible. Use enum FPStateKind instead of use_xsave() and use_fxsr(). Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1648 Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- linux-user/i386/signal.c | 558 +++++++++++++++++++------------ tests/tcg/x86_64/test-1648.c | 33 ++ tests/tcg/x86_64/Makefile.target | 1 + 3 files changed, 377 insertions(+), 215 deletions(-) create mode 100644 tests/tcg/x86_64/test-1648.c diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 03031ef9e5..47e6c0ff0d 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -65,20 +65,6 @@ struct target_fpstate_32 { X86LegacyXSaveArea fxstate; }; =20 -/* - * For simplicity, setup_frame aligns struct target_fpstate_32 to - * 16 bytes, so ensure that the FXSAVE area is also aligned. - */ -QEMU_BUILD_BUG_ON(offsetof(struct target_fpstate_32, fxstate) & 15); - -#ifndef TARGET_X86_64 -# define target_fpstate target_fpstate_32 -# define TARGET_FPSTATE_FXSAVE_OFFSET offsetof(struct target_fpstate_32, f= xstate) -#else -# define target_fpstate X86LegacyXSaveArea -# define TARGET_FPSTATE_FXSAVE_OFFSET 0 -#endif - struct target_sigcontext_32 { uint16_t gs, __gsh; uint16_t fs, __fsh; @@ -161,24 +147,16 @@ struct sigframe { int sig; struct target_sigcontext sc; /* - * The actual fpstate is placed after retcode[] below, to make - * room for the variable-sized xsave data. The older unused fpstate - * has to be kept to avoid changing the offset of extramask[], which + * The actual fpstate is placed after retcode[] below, to make room + * for the variable-sized xsave data. The older unused fpstate has + * to be kept to avoid changing the offset of extramask[], which * is part of the ABI. */ - struct target_fpstate fpstate_unused; + struct target_fpstate_32 fpstate_unused; abi_ulong extramask[TARGET_NSIG_WORDS-1]; char retcode[8]; - - /* - * This field will be 16-byte aligned in memory. Applying QEMU_ALIGNED - * to it ensures that the base of the frame has an appropriate alignme= nt - * too. - */ - struct target_fpstate fpstate QEMU_ALIGNED(8); + /* fp state follows here */ }; -#define TARGET_SIGFRAME_FXSAVE_OFFSET ( = \ - offsetof(struct sigframe, fpstate) + TARGET_FPSTATE_FXSAVE_OFFSET) =20 struct rt_sigframe { abi_ulong pretcode; @@ -188,10 +166,8 @@ struct rt_sigframe { struct target_siginfo info; struct target_ucontext uc; char retcode[8]; - struct target_fpstate fpstate QEMU_ALIGNED(8); + /* fp state follows here */ }; -#define TARGET_RT_SIGFRAME_FXSAVE_OFFSET ( = \ - offsetof(struct rt_sigframe, fpstate) + TARGET_FPSTATE_FXSAVE_OFFSET) =20 /* * Verify that vdso-asmoffset.h constants match. @@ -209,66 +185,178 @@ struct rt_sigframe { abi_ulong pretcode; struct target_ucontext uc; struct target_siginfo info; - struct target_fpstate fpstate QEMU_ALIGNED(16); + /* fp state follows here */ }; -#define TARGET_RT_SIGFRAME_FXSAVE_OFFSET ( = \ - offsetof(struct rt_sigframe, fpstate) + TARGET_FPSTATE_FXSAVE_OFFSET) #endif =20 +typedef enum { +#ifndef TARGET_X86_64 + FPSTATE_FSAVE, +#endif + FPSTATE_FXSAVE, + FPSTATE_XSAVE +} FPStateKind; + +static FPStateKind get_fpstate_kind(CPUX86State *env) +{ + if (env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE) { + return FPSTATE_XSAVE; + } +#ifdef TARGET_X86_64 + return FPSTATE_FXSAVE; +#else + if (env->features[FEAT_1_EDX] & CPUID_FXSR) { + return FPSTATE_FXSAVE; + } + return FPSTATE_FSAVE; +#endif +} + +static unsigned get_fpstate_size(CPUX86State *env, FPStateKind fpkind) +{ + /* + * Kernel: + * fpu__alloc_mathframe + * xstate_sigframe_size(current->thread.fpu.fpstate); + * size =3D fpstate->user_size + * use_xsave() ? size + FP_XSTATE_MAGIC2_SIZE : size + * where fpstate->user_size is computed at init in + * fpu__init_system_xstate_size_legacy and + * fpu__init_system_xstate. + * + * Here we have no place to pre-compute, so inline it all. + */ + switch (fpkind) { + case FPSTATE_XSAVE: + return (xsave_area_size(env->xcr0, false) + + TARGET_FP_XSTATE_MAGIC2_SIZE); + case FPSTATE_FXSAVE: + return sizeof(X86LegacyXSaveArea); +#ifndef TARGET_X86_64 + case FPSTATE_FSAVE: + return sizeof(struct target_fregs_state); +#endif + } + g_assert_not_reached(); +} + +static abi_ptr get_sigframe(struct target_sigaction *ka, CPUX86State *env, + unsigned frame_size, FPStateKind fpkind, + abi_ptr *fpstate, abi_ptr *fxstate, abi_ptr *f= pend) +{ + abi_ptr sp; + unsigned math_size; + + /* Default to using normal stack */ + sp =3D get_sp_from_cpustate(env); +#ifdef TARGET_X86_64 + sp -=3D 128; /* this is the redzone */ +#endif + + /* This is the X/Open sanctioned signal stack switching. */ + if (ka->sa_flags & TARGET_SA_ONSTACK) { + sp =3D target_sigsp(sp, ka); + } else { +#ifndef TARGET_X86_64 + /* This is the legacy signal stack switching. */ + if ((env->segs[R_SS].selector & 0xffff) !=3D __USER_DS + && !(ka->sa_flags & TARGET_SA_RESTORER) + && ka->sa_restorer) { + sp =3D ka->sa_restorer; + } +#endif + } + + math_size =3D get_fpstate_size(env, fpkind); + sp =3D ROUND_DOWN(sp - math_size, 64); + *fpend =3D sp + math_size; + *fxstate =3D sp; +#ifndef TARGET_X86_64 + if (fpkind !=3D FPSTATE_FSAVE) { + sp -=3D sizeof(struct target_fregs_state); + } +#endif + *fpstate =3D sp; + + sp -=3D frame_size; + /* + * Align the stack pointer according to the ABI, i.e. so that on + * function entry ((sp + sizeof(return_addr)) & 15) =3D=3D 0. + */ + sp +=3D sizeof(target_ulong); + sp =3D ROUND_DOWN(sp, 16); + sp -=3D sizeof(target_ulong); + + return sp; +} + /* * Set up a signal frame. */ =20 -static void xsave_sigcontext(CPUX86State *env, X86LegacyXSaveArea *fxsave, - abi_ulong fxsave_addr) +static void fxsave_sigcontext(CPUX86State *env, X86LegacyXSaveArea *fxstat= e, + abi_ptr fxstate_addr) { - struct target_fpx_sw_bytes *sw =3D (void *)&fxsave->sw_reserved; + struct target_fpx_sw_bytes *sw =3D (void *)&fxstate->sw_reserved; =20 - if (!(env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE)) { - /* fxsave_addr must be 16 byte aligned for fxsave */ - assert(!(fxsave_addr & 0xf)); - - cpu_x86_fxsave(env, fxsave_addr); - __put_user(0, &sw->magic1); - } else { - uint32_t xstate_size =3D xsave_area_size(env->xcr0, false); - - /* - * extended_size is the offset from fpstate_addr to right after th= e end - * of the extended save states. On 32-bit that includes the legacy - * FSAVE area. - */ - uint32_t extended_size =3D TARGET_FPSTATE_FXSAVE_OFFSET - + xstate_size + TARGET_FP_XSTATE_MAGIC2_SIZE; - - /* fxsave_addr must be 64 byte aligned for xsave */ - assert(!(fxsave_addr & 0x3f)); - - /* Zero the header, XSAVE *adds* features to an existing save stat= e. */ - memset(fxsave + 1, 0, sizeof(X86XSaveHeader)); - cpu_x86_xsave(env, fxsave_addr, -1); - __put_user(TARGET_FP_XSTATE_MAGIC1, &sw->magic1); - __put_user(extended_size, &sw->extended_size); - __put_user(env->xcr0, &sw->xfeatures); - __put_user(xstate_size, &sw->xstate_size); - __put_user(TARGET_FP_XSTATE_MAGIC2, - (uint32_t *)((void *)fxsave + xstate_size)); - } + /* fxstate_addr must be 16 byte aligned for fxsave */ + assert(!(fxstate_addr & 0xf)); + cpu_x86_fxsave(env, fxstate_addr); + __put_user(0, &sw->magic1); } =20 -static void setup_sigcontext(struct target_sigcontext *sc, - struct target_fpstate *fpstate, CPUX86State *env, abi_ulong mask, - abi_ulong fpstate_addr) +static void xsave_sigcontext(CPUX86State *env, + X86LegacyXSaveArea *fxstate, + abi_ptr fpstate_addr, + abi_ptr xstate_addr, + abi_ptr fpend_addr) +{ + struct target_fpx_sw_bytes *sw =3D (void *)&fxstate->sw_reserved; + /* + * extended_size is the offset from fpstate_addr to right after + * the end of the extended save states. On 32-bit that includes + * the legacy FSAVE area. + */ + uint32_t extended_size =3D fpend_addr - fpstate_addr; + /* Recover xstate_size by removing magic2. */ + uint32_t xstate_size =3D (fpend_addr - xstate_addr + - TARGET_FP_XSTATE_MAGIC2_SIZE); + /* magic2 goes just after xstate. */ + uint32_t *magic2 =3D (void *)fxstate + xstate_size; + + /* xstate_addr must be 64 byte aligned for xsave */ + assert(!(xstate_addr & 0x3f)); + + /* Zero the header, XSAVE *adds* features to an existing save state. = */ + memset(fxstate + 1, 0, sizeof(X86XSaveHeader)); + cpu_x86_xsave(env, xstate_addr, -1); + + __put_user(TARGET_FP_XSTATE_MAGIC1, &sw->magic1); + __put_user(extended_size, &sw->extended_size); + __put_user(env->xcr0, &sw->xfeatures); + __put_user(xstate_size, &sw->xstate_size); + __put_user(TARGET_FP_XSTATE_MAGIC2, magic2); +} + +static void setup_sigcontext(CPUX86State *env, + struct target_sigcontext *sc, + abi_ulong mask, FPStateKind fpkind, + struct target_fregs_state *fpstate, + abi_ptr fpstate_addr, + X86LegacyXSaveArea *fxstate, + abi_ptr fxstate_addr, + abi_ptr fpend_addr) { CPUState *cs =3D env_cpu(env); + #ifndef TARGET_X86_64 uint16_t magic; =20 /* already locked in setup_frame() */ - __put_user(env->segs[R_GS].selector, (unsigned int *)&sc->gs); - __put_user(env->segs[R_FS].selector, (unsigned int *)&sc->fs); - __put_user(env->segs[R_ES].selector, (unsigned int *)&sc->es); - __put_user(env->segs[R_DS].selector, (unsigned int *)&sc->ds); + __put_user(env->segs[R_GS].selector, (uint32_t *)&sc->gs); + __put_user(env->segs[R_FS].selector, (uint32_t *)&sc->fs); + __put_user(env->segs[R_ES].selector, (uint32_t *)&sc->es); + __put_user(env->segs[R_DS].selector, (uint32_t *)&sc->ds); __put_user(env->regs[R_EDI], &sc->edi); __put_user(env->regs[R_ESI], &sc->esi); __put_user(env->regs[R_EBP], &sc->ebp); @@ -280,21 +368,15 @@ static void setup_sigcontext(struct target_sigcontext= *sc, __put_user(cs->exception_index, &sc->trapno); __put_user(env->error_code, &sc->err); __put_user(env->eip, &sc->eip); - __put_user(env->segs[R_CS].selector, (unsigned int *)&sc->cs); + __put_user(env->segs[R_CS].selector, (uint32_t *)&sc->cs); __put_user(env->eflags, &sc->eflags); __put_user(env->regs[R_ESP], &sc->esp_at_signal); - __put_user(env->segs[R_SS].selector, (unsigned int *)&sc->ss); + __put_user(env->segs[R_SS].selector, (uint32_t *)&sc->ss); =20 cpu_x86_fsave(env, fpstate_addr, 1); - fpstate->fpstate.status =3D fpstate->fpstate.swd; - if (!(env->features[FEAT_1_EDX] & CPUID_FXSR)) { - magic =3D 0xffff; - } else { - xsave_sigcontext(env, &fpstate->fxstate, - fpstate_addr + TARGET_FPSTATE_FXSAVE_OFFSET); - magic =3D 0; - } - __put_user(magic, &fpstate->fpstate.magic); + fpstate->status =3D fpstate->swd; + magic =3D (fpkind =3D=3D FPSTATE_FSAVE ? 0 : 0xffff); + __put_user(magic, &fpstate->magic); #else __put_user(env->regs[R_EDI], &sc->rdi); __put_user(env->regs[R_ESI], &sc->rsi); @@ -323,57 +405,25 @@ static void setup_sigcontext(struct target_sigcontext= *sc, __put_user((uint16_t)0, &sc->gs); __put_user((uint16_t)0, &sc->fs); __put_user(env->segs[R_SS].selector, &sc->ss); - - xsave_sigcontext(env, fpstate, fpstate_addr); #endif =20 - __put_user(fpstate_addr, &sc->fpstate); + switch (fpkind) { + case FPSTATE_XSAVE: + xsave_sigcontext(env, fxstate, fpstate_addr, fxstate_addr, fpend_a= ddr); + break; + case FPSTATE_FXSAVE: + fxsave_sigcontext(env, fxstate, fxstate_addr); + break; + default: + break; + } =20 + __put_user(fpstate_addr, &sc->fpstate); /* non-iBCS2 extensions.. */ __put_user(mask, &sc->oldmask); __put_user(env->cr[2], &sc->cr2); } =20 -/* - * Determine which stack to use.. - */ - -static inline abi_ulong -get_sigframe(struct target_sigaction *ka, CPUX86State *env, size_t fxsave_= offset) -{ - unsigned long esp; - - /* Default to using normal stack */ - esp =3D get_sp_from_cpustate(env); -#ifdef TARGET_X86_64 - esp -=3D 128; /* this is the redzone */ -#endif - - /* This is the X/Open sanctioned signal stack switching. */ - if (ka->sa_flags & TARGET_SA_ONSTACK) { - esp =3D target_sigsp(esp, ka); - } else { -#ifndef TARGET_X86_64 - /* This is the legacy signal stack switching. */ - if ((env->segs[R_SS].selector & 0xffff) !=3D __USER_DS && - !(ka->sa_flags & TARGET_SA_RESTORER) && - ka->sa_restorer) { - esp =3D (unsigned long) ka->sa_restorer; - } -#endif - } - - if (!(env->features[FEAT_1_EDX] & CPUID_FXSR)) { - return (esp - (fxsave_offset + sizeof(X86LegacyXSaveArea))) & -8ul; - } else if (!(env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE)) { - return ((esp - sizeof(X86LegacyXSaveArea)) & -16ul) - fxsave_offse= t; - } else { - size_t xstate_size =3D - xsave_area_size(env->xcr0, false) + TARGET_FP_XSTATE_MAGIC2= _SIZE; - return ((esp - xstate_size) & -64ul) - fxsave_offset; - } -} - #ifndef TARGET_X86_64 static void install_sigtramp(void *tramp) { @@ -395,20 +445,36 @@ static void install_rt_sigtramp(void *tramp) void setup_frame(int sig, struct target_sigaction *ka, target_sigset_t *set, CPUX86State *env) { - abi_ulong frame_addr; + abi_ptr frame_addr, fpstate_addr, fxstate_addr, fpend_addr; struct sigframe *frame; - int i; + struct target_fregs_state *fpstate; + X86LegacyXSaveArea *fxstate; + unsigned total_size; + FPStateKind fpkind; =20 - frame_addr =3D get_sigframe(ka, env, TARGET_SIGFRAME_FXSAVE_OFFSET); + fpkind =3D get_fpstate_kind(env); + frame_addr =3D get_sigframe(ka, env, sizeof(struct sigframe), fpkind, + &fpstate_addr, &fxstate_addr, &fpend_addr); trace_user_setup_frame(env, frame_addr); =20 - if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) - goto give_sigsegv; + total_size =3D fpend_addr - frame_addr; + frame =3D lock_user(VERIFY_WRITE, frame_addr, total_size, 0); + if (!frame) { + force_sigsegv(sig); + return; + } =20 - setup_sigcontext(&frame->sc, &frame->fpstate, env, set->sig[0], - frame_addr + offsetof(struct sigframe, fpstate)); + fxstate =3D (void *)frame + (fxstate_addr - frame_addr); +#ifdef TARGET_X86_64 + fpstate =3D NULL; +#else + fpstate =3D (void *)frame + (fpstate_addr - frame_addr); +#endif =20 - for (i =3D 1; i < TARGET_NSIG_WORDS; i++) { + setup_sigcontext(env, &frame->sc, set->sig[0], fpkind, + fpstate, fpstate_addr, fxstate, fxstate_addr, fpend_a= ddr); + + for (int i =3D 1; i < TARGET_NSIG_WORDS; i++) { __put_user(set->sig[i], &frame->extramask[i - 1]); } =20 @@ -421,6 +487,7 @@ void setup_frame(int sig, struct target_sigaction *ka, install_sigtramp(frame->retcode); __put_user(default_sigreturn, &frame->pretcode); } + unlock_user(frame, frame_addr, total_size); =20 /* Set up registers for signal handler */ env->regs[R_ESP] =3D frame_addr; @@ -438,13 +505,6 @@ void setup_frame(int sig, struct target_sigaction *ka, cpu_x86_load_seg(env, R_SS, __USER_DS); cpu_x86_load_seg(env, R_CS, __USER_CS); env->eflags &=3D ~TF_MASK; - - unlock_user_struct(frame, frame_addr, 1); - - return; - -give_sigsegv: - force_sigsegv(sig); } #endif =20 @@ -453,37 +513,51 @@ void setup_rt_frame(int sig, struct target_sigaction = *ka, target_siginfo_t *info, target_sigset_t *set, CPUX86State *env) { - abi_ulong frame_addr; + abi_ptr frame_addr, fpstate_addr, fxstate_addr, fpend_addr; struct rt_sigframe *frame; - int i; + X86LegacyXSaveArea *fxstate; + struct target_fregs_state *fpstate; + unsigned total_size; + FPStateKind fpkind; =20 - frame_addr =3D get_sigframe(ka, env, TARGET_RT_SIGFRAME_FXSAVE_OFFSET); + fpkind =3D get_fpstate_kind(env); + frame_addr =3D get_sigframe(ka, env, sizeof(struct rt_sigframe), fpkin= d, + &fpstate_addr, &fxstate_addr, &fpend_addr); trace_user_setup_rt_frame(env, frame_addr); =20 - if (!lock_user_struct(VERIFY_WRITE, frame, frame_addr, 0)) + total_size =3D fpend_addr - frame_addr; + frame =3D lock_user(VERIFY_WRITE, frame_addr, total_size, 0); + if (!frame) { goto give_sigsegv; + } =20 if (ka->sa_flags & TARGET_SA_SIGINFO) { frame->info =3D *info; } =20 /* Create the ucontext. */ - if (env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE) { - __put_user(1, &frame->uc.tuc_flags); - } else { - __put_user(0, &frame->uc.tuc_flags); - } + __put_user(fpkind =3D=3D FPSTATE_XSAVE, &frame->uc.tuc_flags); __put_user(0, &frame->uc.tuc_link); target_save_altstack(&frame->uc.tuc_stack, env); - setup_sigcontext(&frame->uc.tuc_mcontext, &frame->fpstate, env, - set->sig[0], frame_addr + offsetof(struct rt_sigframe, fpstate= )); =20 - for (i =3D 0; i < TARGET_NSIG_WORDS; i++) { + fxstate =3D (void *)frame + (fxstate_addr - frame_addr); +#ifdef TARGET_X86_64 + fpstate =3D NULL; +#else + fpstate =3D (void *)frame + (fpstate_addr - frame_addr); +#endif + + setup_sigcontext(env, &frame->uc.tuc_mcontext, set->sig[0], fpkind, + fpstate, fpstate_addr, fxstate, fxstate_addr, fpend_a= ddr); + + for (int i =3D 0; i < TARGET_NSIG_WORDS; i++) { __put_user(set->sig[i], &frame->uc.tuc_sigmask.sig[i]); } =20 - /* Set up to return from userspace. If provided, use a stub - already in userspace. */ + /* + * Set up to return from userspace. If provided, use a stub + * already in userspace. + */ if (ka->sa_flags & TARGET_SA_RESTORER) { __put_user(ka->sa_restorer, &frame->pretcode); } else { @@ -515,60 +589,113 @@ void setup_rt_frame(int sig, struct target_sigaction= *ka, env->regs[R_ESI] =3D frame_addr + offsetof(struct rt_sigframe, info); env->regs[R_EDX] =3D frame_addr + offsetof(struct rt_sigframe, uc); #endif + unlock_user(frame, frame_addr, total_size); =20 cpu_x86_load_seg(env, R_DS, __USER_DS); cpu_x86_load_seg(env, R_ES, __USER_DS); cpu_x86_load_seg(env, R_CS, __USER_CS); cpu_x86_load_seg(env, R_SS, __USER_DS); env->eflags &=3D ~TF_MASK; - - unlock_user_struct(frame, frame_addr, 1); - return; =20 give_sigsegv: force_sigsegv(sig); } =20 -static bool xrstor_sigcontext(CPUX86State *env, X86LegacyXSaveArea *fxsave, - abi_ulong fxsave_addr) +/* + * Restore a signal frame. + */ + +static bool xrstor_sigcontext(CPUX86State *env, FPStateKind fpkind, + X86LegacyXSaveArea *fxstate, + abi_ptr fxstate_addr) { - struct target_fpx_sw_bytes *sw =3D (void *)&fxsave->sw_reserved; + struct target_fpx_sw_bytes *sw =3D (void *)&fxstate->sw_reserved; + uint32_t magic1, magic2; + uint32_t extended_size, xstate_size, min_size, max_size; =20 - if (env->features[FEAT_1_ECX] & CPUID_EXT_XSAVE) { - uint32_t magic1 =3D tswapl(sw->magic1); - uint32_t extended_size =3D tswapl(sw->extended_size); - uint32_t xstate_size =3D tswapl(sw->xstate_size); - uint32_t minimum_size =3D (TARGET_FPSTATE_FXSAVE_OFFSET - + TARGET_FP_XSTATE_MAGIC2_SIZE - + xstate_size); - uint32_t magic2; + switch (fpkind) { + case FPSTATE_XSAVE: + magic1 =3D tswap32(sw->magic1); + extended_size =3D tswap32(sw->extended_size); + xstate_size =3D tswap32(sw->xstate_size); + min_size =3D sizeof(X86LegacyXSaveArea) + sizeof(X86XSaveHeader); + max_size =3D xsave_area_size(env->xcr0, false); =20 - /* Linux checks MAGIC2 using xstate_size, not extended_size. */ - if (magic1 =3D=3D TARGET_FP_XSTATE_MAGIC1 - && extended_size >=3D minimum_size) { - if (!access_ok(env_cpu(env), VERIFY_READ, fxsave_addr, - extended_size - TARGET_FPSTATE_FXSAVE_OFFSET)) { - return false; - } - magic2 =3D tswapl(*(uint32_t *)((void *)fxsave + xstate_size)); - if (magic2 =3D=3D TARGET_FP_XSTATE_MAGIC2) { - cpu_x86_xrstor(env, fxsave_addr, -1); - return true; - } + /* Check for the first magic field and other error scenarios. */ + if (magic1 !=3D TARGET_FP_XSTATE_MAGIC1 || + xstate_size < min_size || + xstate_size > max_size || + xstate_size > extended_size) { + break; } - /* fall through to fxrstor */ + if (!access_ok(env_cpu(env), VERIFY_READ, fxstate_addr, + xstate_size + TARGET_FP_XSTATE_MAGIC2_SIZE)) { + return false; + } + /* + * Check for the presence of second magic word at the end of memory + * layout. This detects the case where the user just copied the le= gacy + * fpstate layout with out copying the extended state information + * in the memory layout. + */ + if (get_user_u32(magic2, fxstate_addr + xstate_size)) { + return false; + } + if (magic2 !=3D TARGET_FP_XSTATE_MAGIC2) { + break; + } + cpu_x86_xrstor(env, fxstate_addr, -1); + return true; + + default: + break; } =20 - cpu_x86_fxrstor(env, fxsave_addr); + cpu_x86_fxrstor(env, fxstate_addr); return true; } =20 +#ifndef TARGET_X86_64 +static bool frstor_sigcontext(CPUX86State *env, FPStateKind fpkind, + struct target_fregs_state *fpstate, + abi_ptr fpstate_addr, + X86LegacyXSaveArea *fxstate, + abi_ptr fxstate_addr) +{ + switch (fpkind) { + case FPSTATE_XSAVE: + if (!xrstor_sigcontext(env, fpkind, fxstate, fxstate_addr)) { + return false; + } + break; + case FPSTATE_FXSAVE: + cpu_x86_fxrstor(env, fxstate_addr); + break; + case FPSTATE_FSAVE: + break; + default: + g_assert_not_reached(); + } + + /* + * Copy the legacy state because the FP portion of the FX frame has + * to be ignored for histerical raisins. The kernel folds the two + * states together and then performs a single load; here we perform + * the merge within ENV by loading XSTATE/FXSTATE first, then + * overriding with the FSTATE afterward. + */ + cpu_x86_frstor(env, fpstate_addr, 1); + return true; +} +#endif + static bool restore_sigcontext(CPUX86State *env, struct target_sigcontext = *sc) { - abi_ulong fpstate_addr; - unsigned int tmpflags; - struct target_fpstate *fpstate; + abi_ptr fpstate_addr; + unsigned tmpflags, math_size; + FPStateKind fpkind; + void *fpstate; bool ok; =20 #ifndef TARGET_X86_64 @@ -614,29 +741,33 @@ static bool restore_sigcontext(CPUX86State *env, stru= ct target_sigcontext *sc) =20 tmpflags =3D tswapl(sc->eflags); env->eflags =3D (env->eflags & ~0x40DD5) | (tmpflags & 0x40DD5); - // regs->orig_eax =3D -1; /* disable syscall check= s */ =20 fpstate_addr =3D tswapl(sc->fpstate); if (fpstate_addr =3D=3D 0) { return true; } - if (!lock_user_struct(VERIFY_READ, fpstate, fpstate_addr, - sizeof(struct target_fpstate))) { + + fpkind =3D get_fpstate_kind(env); + math_size =3D get_fpstate_size(env, fpkind); +#ifndef TARGET_X86_64 + if (fpkind !=3D FPSTATE_FSAVE) { + math_size +=3D sizeof(struct target_fregs_state); + } +#endif + fpstate =3D lock_user(VERIFY_READ, fpstate_addr, math_size, 1); + if (!fpstate) { return false; } -#ifndef TARGET_X86_64 - if (!(env->features[FEAT_1_EDX] & CPUID_FXSR)) { - cpu_x86_frstor(env, fpstate_addr, 1); - ok =3D true; - } else { - ok =3D xrstor_sigcontext(env, &fpstate->fxstate, - fpstate_addr + TARGET_FPSTATE_FXSAVE_OFFSET= ); - } -#else - ok =3D xrstor_sigcontext(env, fpstate, fpstate_addr); -#endif - unlock_user_struct(fpstate, fpstate_addr, 0); =20 +#ifdef TARGET_X86_64 + ok =3D xrstor_sigcontext(env, fpkind, fpstate, fpstate_addr); +#else + ok =3D frstor_sigcontext(env, fpkind, fpstate, fpstate_addr, + fpstate + sizeof(struct target_fregs_state), + fpstate_addr + sizeof(struct target_fregs_state= )); +#endif + + unlock_user(fpstate, fpstate_addr, 0); return ok; } =20 @@ -648,30 +779,27 @@ long do_sigreturn(CPUX86State *env) abi_ulong frame_addr =3D env->regs[R_ESP] - 8; target_sigset_t target_set; sigset_t set; - int i; =20 trace_user_do_sigreturn(env, frame_addr); - if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) - goto badframe; - /* set blocked signals */ - __get_user(target_set.sig[0], &frame->sc.oldmask); - for(i =3D 1; i < TARGET_NSIG_WORDS; i++) { - __get_user(target_set.sig[i], &frame->extramask[i - 1]); + if (!lock_user_struct(VERIFY_READ, frame, frame_addr, 1)) { + force_sig(TARGET_SIGSEGV); + return -QEMU_ESIGRETURN; } =20 + /* Set blocked signals. */ + __get_user(target_set.sig[0], &frame->sc.oldmask); + for (int i =3D 1; i < TARGET_NSIG_WORDS; i++) { + __get_user(target_set.sig[i], &frame->extramask[i - 1]); + } target_to_host_sigset_internal(&set, &target_set); set_sigmask(&set); =20 - /* restore registers */ + /* Restore registers */ if (!restore_sigcontext(env, &frame->sc)) { - goto badframe; + force_sig(TARGET_SIGSEGV); } - unlock_user_struct(frame, frame_addr, 0); - return -QEMU_ESIGRETURN; =20 -badframe: unlock_user_struct(frame, frame_addr, 0); - force_sig(TARGET_SIGSEGV); return -QEMU_ESIGRETURN; } #endif diff --git a/tests/tcg/x86_64/test-1648.c b/tests/tcg/x86_64/test-1648.c new file mode 100644 index 0000000000..fd0644a8ce --- /dev/null +++ b/tests/tcg/x86_64/test-1648.c @@ -0,0 +1,33 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* See https://gitlab.com/qemu-project/qemu/-/issues/1648 */ + +#include + +__attribute__((noinline)) +void bar(void) +{ + /* Success! Continue through sigreturn. */ +} + +/* + * Because of the change of ABI between foo and bar, the compiler is + * required to save XMM6-XMM15. The compiler will use MOVAPS or MOVDQA, + * which will trap if the stack frame is not 16 byte aligned. + */ +__attribute__((noinline, ms_abi)) +void foo(void) +{ + bar(); +} + +void sighandler(int num) +{ + foo(); +} + +int main(void) +{ + signal(SIGUSR1, sighandler); + raise(SIGUSR1); + return 0; +} diff --git a/tests/tcg/x86_64/Makefile.target b/tests/tcg/x86_64/Makefile.t= arget index e64aab1b81..5fedf22117 100644 --- a/tests/tcg/x86_64/Makefile.target +++ b/tests/tcg/x86_64/Makefile.target @@ -13,6 +13,7 @@ X86_64_TESTS +=3D vsyscall X86_64_TESTS +=3D noexec X86_64_TESTS +=3D cmpxchg X86_64_TESTS +=3D adox +X86_64_TESTS +=3D test-1648 TESTS=3D$(MULTIARCH_TESTS) $(X86_64_TESTS) test-x86_64 else TESTS=3D$(MULTIARCH_TESTS) --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1716771270; cv=none; d=zohomail.com; s=zohoarc; b=TRG2B9zv5k5VQktPGGINQP7sAIjQ2VT4eeOhwQ0TA4SkRYgGtmYf8GF8jmIlIpAq+N8xbXe1E513RnXXyx/xHKAQ/3dcX7dDu6eWbVZlb4f2TQs5CspqXIf4QPe0eBJLvYDbqc/eyAHYmj0mUsqglfbBjheHkjwmONzeTffrZMo= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1716771270; h=Content-Transfer-Encoding:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To:Cc; bh=vNGTbU6DTUvMSHt1rxKvf5wFDuC+/EH4FoXciheiqRg=; b=XMKPu5Nkx2nU8SPiE2D1rIBXTJ8PXovbqN9BoqwtxHR1cZBwdHeanbkLdcNrTTzxerIiqDDLvzsLotaIQ2pf1r04CKfdtuCz8lrgW4nRTc5LBW1MVVhsTdqdSO4lgESHnXMPOGlADVLkkRSKZJVR7D4FOKoCMtXE9omFvJPnKrc= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771270728655.2731278441108; Sun, 26 May 2024 17:54:30 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZd-0007YG-9l; Sun, 26 May 2024 20:50:50 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBOZM-0007HF-Fj for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:32 -0400 Received: from mail-ot1-x332.google.com ([2607:f8b0:4864:20::332]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sBOZK-0003hP-2d for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:32 -0400 Received: by mail-ot1-x332.google.com with SMTP id 46e09a7af769-6f12171523eso4699425a34.1 for ; Sun, 26 May 2024 17:50:21 -0700 (PDT) Received: from stoup.. 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.20 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771021; x=1717375821; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:from:to:cc:subject:date:message-id :reply-to; bh=vNGTbU6DTUvMSHt1rxKvf5wFDuC+/EH4FoXciheiqRg=; b=IW/YV/g3z8GMM37gpwlYY5QUELIP9mQuH1ZZz/F5lX7DUJvCpXc0UnAixZc9nxo4Pz ItfINgNUPlT8P9ioQ2FT7XBaum9i3l1eVwvjeffmfSlHgjGkXMO4KvmzW9toZlN0dbhC I3M1VncSQLUi0YzYyOPscjKrr5AnnkkAZeacO+NoWW0ReIMHmzcyEqx/NYDlkd4PU/fD tTks55PwhZtlPq4BNeh5PtSLfzORJCtjXna+bDr2ssB7OjURq0Q+uWov7anu7Dc5vvKq TDOypPhPlIJSigjUwzCWca7QCSXaYV4vGv3LvY1O+DcTVcAP9FNFtn/NTrRs3HQgQNfj i4Eg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771021; x=1717375821; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=vNGTbU6DTUvMSHt1rxKvf5wFDuC+/EH4FoXciheiqRg=; b=kqyP+M4Mqs1IycMt+pg/Cs2m1cqgrkjk7zj6TGEwzOXKDctD1ZXlssTrcEtt4MsiCx bMqevEPqNTDsFM1a1+h5dk5tk+tIL0ek7a1D+LfCasj3hT06FZLmW5W30H5N8vbC1gTf W+ahirUX3ehAcXLKGmtC+/0tmv+SSOvdIdBFasDSgrGuZtGEA/wMw4a94SdplE4BugVO TlYkyQEHhiCFMqhL8OtZxKZYEusfPVGpsWmuzga1u8sL+t4Ow8JONV09QC96ILw0cTnf u7dIR0KOTgUG91YRhd9gCOV3CHE7ivLt0dStP/SvcqEwVV0y49lq93/Du3n7/lVtbuFS 9jUQ== X-Gm-Message-State: AOJu0YzYZwMs2vC3ohVPQtVZaZyOAwQOjyR84XG7d8863DtW2IqSUbge FRg6gQrgEJUN5iKXL04gmkHbzP3NsvZqP5HRMPGJEioQFAit18yWzXWIUpVPeptNyqotSvBsXXC 4 X-Google-Smtp-Source: AGHT+IEbQxdYqF0MRFYLAx8XZ75mE79vXrUuxYoO7+cCJ5IEaQtY1Pi5bFpKnba0FQqfPGzlsS/o6A== X-Received: by 2002:a05:6870:828b:b0:24f:eadd:9a30 with SMTP id 586e51a60fabf-24feade53d6mr2861908fac.55.1716771021077; Sun, 26 May 2024 17:50:21 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 23/28] linux-user/i386: Honor xfeatures in xrstor_sigcontext Date: Sun, 26 May 2024 17:49:56 -0700 Message-Id: <20240527005001.642825-24-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::332; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x332.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771272063100006 Content-Type: text/plain; charset="utf-8" Signed-off-by: Richard Henderson --- linux-user/i386/signal.c | 19 ++++++++++++++++++- 1 file changed, 18 insertions(+), 1 deletion(-) diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 47e6c0ff0d..e716ec8989 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -613,6 +613,7 @@ static bool xrstor_sigcontext(CPUX86State *env, FPState= Kind fpkind, struct target_fpx_sw_bytes *sw =3D (void *)&fxstate->sw_reserved; uint32_t magic1, magic2; uint32_t extended_size, xstate_size, min_size, max_size; + uint64_t xfeatures; =20 switch (fpkind) { case FPSTATE_XSAVE: @@ -629,10 +630,25 @@ static bool xrstor_sigcontext(CPUX86State *env, FPSta= teKind fpkind, xstate_size > extended_size) { break; } + + /* + * Restore the features indicated in the frame, masked by + * those currently enabled. Re-check the frame size. + * ??? It is not clear where the kernel does this, but it + * is not in check_xstate_in_sigframe, and so (probably) + * does not fall back to fxrstor. + */ + xfeatures =3D tswap64(sw->xfeatures) & env->xcr0; + min_size =3D xsave_area_size(xfeatures, false); + if (xstate_size < min_size) { + return false; + } + if (!access_ok(env_cpu(env), VERIFY_READ, fxstate_addr, xstate_size + TARGET_FP_XSTATE_MAGIC2_SIZE)) { return false; } + /* * Check for the presence of second magic word at the end of memory * layout. This detects the case where the user just copied the le= gacy @@ -645,7 +661,8 @@ static bool xrstor_sigcontext(CPUX86State *env, FPState= Kind fpkind, if (magic2 !=3D TARGET_FP_XSTATE_MAGIC2) { break; } - cpu_x86_xrstor(env, fxstate_addr, -1); + + cpu_x86_xrstor(env, fxstate_addr, xfeatures); return true; =20 default: --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=linaro.org ARC-Seal: i=1; a=rsa-sha256; t=1716771338; cv=none; d=zohomail.com; s=zohoarc; b=htt8L7EwMs7OxHcVAN3Ey6CDKhXtaQfTaQlql6voXcZguVyFX39qRfTe4mlJ5jcu2yU46/WIM7qOpN028d/uUVeqa+9LXfj+AwWeJheNjHXK1mGUuOmhXA322fxmNnSfMR/BsOxAWURM2hoyz3N3lUBbuKPN3eMLCIIMFV24a8M= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1716771338; h=Content-Transfer-Encoding:Cc:Cc:Date:Date:From:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:Subject:To:To:Message-Id:Reply-To; bh=2dEL/f+WNN/VTjMYU3HO0zXd0qrm2vxSZ2F42AN8L34=; b=jGgRgl7o90Jt+GQ/HUAnfwmHWBUHNfrtALR+NEVjm1wm6xhYVIDCLmgO1jCOVuvXcXsre7/7TIq0v7H1cR9LKSZs/P+YDdsvTAlHQj7D9b5CGrcBKceq9OD5VZ2QfIwxNosk2X/d4y84f28QmeDkRXf/Qfv0i12qmb7Vaub/sIU= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=pass header.from= (p=none dis=none) Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771338578693.0336630931273; Sun, 26 May 2024 17:55:38 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZQ-0007Kw-KU; Sun, 26 May 2024 20:50:36 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBOZM-0007HE-Fe for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:32 -0400 Received: from mail-ot1-x32d.google.com ([2607:f8b0:4864:20::32d]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sBOZJ-0003hb-0P for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:31 -0400 Received: by mail-ot1-x32d.google.com with SMTP id 46e09a7af769-6f8d0a00a35so1885284a34.2 for ; Sun, 26 May 2024 17:50:22 -0700 (PDT) Received: from stoup.. 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envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::32d; envelope-from=richard.henderson@linaro.org; helo=mail-ot1-x32d.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771340261100005 Content-Type: text/plain; charset="utf-8" Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- linux-user/i386/signal.c | 2 +- target/i386/tcg/fpu_helper.c | 72 +++++++++++++++++++++--------------- 2 files changed, 43 insertions(+), 31 deletions(-) diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index e716ec8989..ab760db5ea 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -329,7 +329,7 @@ static void xsave_sigcontext(CPUX86State *env, =20 /* Zero the header, XSAVE *adds* features to an existing save state. = */ memset(fxstate + 1, 0, sizeof(X86XSaveHeader)); - cpu_x86_xsave(env, xstate_addr, -1); + cpu_x86_xsave(env, xstate_addr, env->xcr0); =20 __put_user(TARGET_FP_XSTATE_MAGIC1, &sw->magic1); __put_user(extended_size, &sw->extended_size); diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index a09d6aaf07..f5748b72b8 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -2668,47 +2668,38 @@ static uint64_t get_xinuse(CPUX86State *env) return inuse; } =20 -static void do_xsave(CPUX86State *env, target_ulong ptr, uint64_t rfbm, - uint64_t inuse, uint64_t opt, uintptr_t ra) +static void do_xsave_access(X86Access *ac, target_ulong ptr, uint64_t rfbm, + uint64_t inuse, uint64_t opt) { uint64_t old_bv, new_bv; - X86Access ac; - unsigned size; - - /* Never save anything not enabled by XCR0. */ - rfbm &=3D env->xcr0; - opt &=3D rfbm; - - size =3D xsave_area_size(opt, false); - access_prepare(&ac, env, ptr, size, MMU_DATA_STORE, ra); =20 if (opt & XSTATE_FP_MASK) { - do_xsave_fpu(&ac, ptr); + do_xsave_fpu(ac, ptr); } if (rfbm & XSTATE_SSE_MASK) { /* Note that saving MXCSR is not suppressed by XSAVEOPT. */ - do_xsave_mxcsr(&ac, ptr); + do_xsave_mxcsr(ac, ptr); } if (opt & XSTATE_SSE_MASK) { - do_xsave_sse(&ac, ptr); + do_xsave_sse(ac, ptr); } if (opt & XSTATE_YMM_MASK) { - do_xsave_ymmh(&ac, ptr + XO(avx_state)); + do_xsave_ymmh(ac, ptr + XO(avx_state)); } if (opt & XSTATE_BNDREGS_MASK) { - do_xsave_bndregs(&ac, ptr + XO(bndreg_state)); + do_xsave_bndregs(ac, ptr + XO(bndreg_state)); } if (opt & XSTATE_BNDCSR_MASK) { - do_xsave_bndcsr(&ac, ptr + XO(bndcsr_state)); + do_xsave_bndcsr(ac, ptr + XO(bndcsr_state)); } if (opt & XSTATE_PKRU_MASK) { - do_xsave_pkru(&ac, ptr + XO(pkru_state)); + do_xsave_pkru(ac, ptr + XO(pkru_state)); } =20 /* Update the XSTATE_BV field. */ - old_bv =3D access_ldq(&ac, ptr + XO(header.xstate_bv)); + old_bv =3D access_ldq(ac, ptr + XO(header.xstate_bv)); new_bv =3D (old_bv & ~rfbm) | (inuse & rfbm); - access_stq(&ac, ptr + XO(header.xstate_bv), new_bv); + access_stq(ac, ptr + XO(header.xstate_bv), new_bv); } =20 static void do_xsave_chk(CPUX86State *env, target_ulong ptr, uintptr_t ra) @@ -2724,22 +2715,32 @@ static void do_xsave_chk(CPUX86State *env, target_u= long ptr, uintptr_t ra) } } =20 -void helper_xsave(CPUX86State *env, target_ulong ptr, uint64_t rfbm) +static void do_xsave(CPUX86State *env, target_ulong ptr, uint64_t rfbm, + uint64_t inuse, uint64_t opt, uintptr_t ra) { - uintptr_t ra =3D GETPC(); + X86Access ac; + unsigned size; =20 do_xsave_chk(env, ptr, ra); - do_xsave(env, ptr, rfbm, get_xinuse(env), -1, ra); + + /* Never save anything not enabled by XCR0. */ + rfbm &=3D env->xcr0; + opt &=3D rfbm; + size =3D xsave_area_size(opt, false); + + access_prepare(&ac, env, ptr, size, MMU_DATA_STORE, ra); + do_xsave_access(&ac, ptr, rfbm, inuse, opt); +} + +void helper_xsave(CPUX86State *env, target_ulong ptr, uint64_t rfbm) +{ + do_xsave(env, ptr, rfbm, get_xinuse(env), rfbm, GETPC()); } =20 void helper_xsaveopt(CPUX86State *env, target_ulong ptr, uint64_t rfbm) { - uintptr_t ra =3D GETPC(); - uint64_t inuse; - - do_xsave_chk(env, ptr, ra); - inuse =3D get_xinuse(env); - do_xsave(env, ptr, rfbm, inuse, inuse, ra); + uint64_t inuse =3D get_xinuse(env); + do_xsave(env, ptr, rfbm, inuse, inuse, GETPC()); } =20 static void do_xrstor_fpu(X86Access *ac, target_ulong ptr) @@ -3049,7 +3050,18 @@ void cpu_x86_fxrstor(CPUX86State *env, target_ulong = ptr) =20 void cpu_x86_xsave(CPUX86State *env, target_ulong ptr, uint64_t rfbm) { - do_xsave(env, ptr, rfbm, get_xinuse(env), -1, 0); + X86Access ac; + unsigned size; + + /* + * Since this is only called from user-level signal handling, + * we should have done the job correctly there. + */ + assert((rfbm & ~env->xcr0) =3D=3D 0); + size =3D xsave_area_size(rfbm, false); + + access_prepare(&ac, env, ptr, size, MMU_DATA_STORE, 0); + do_xsave_access(&ac, ptr, rfbm, get_xinuse(env), rfbm); } =20 void cpu_x86_xrstor(CPUX86State *env, target_ulong ptr, uint64_t rfbm) --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:22 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771023; x=1717375823; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=StedKx2if52BenXHp9OmhhxzvGoDONYhwtdzrxe9+sA=; b=N671Vlv9cuhdbJbK/NUoVgALEYRnbE4/VwUHSP7NKwOfdzjDKO/Es+rIj+GqkU8KNy fNd8Fu39ZLGaSJzP8vASDrmbRgs2ub8LjDtdTnFMhho37sJkBByZAqnEtwBby1JF9LRr Un4cumerubelcajuNjNvOwO3VZjjfI/mcbMeXanQBdPXYVyoeG042gb7ofMKApEh9cta 0vWYuFVPM/tE1gTCKaozHrxPDTI+n9Ub6WQDvI2hW3EKwRXmYsuAuVixnFKS+7JlMuBg 3jPMXF2EHdW69MjzjEtsqPH5vHN+Dyy6MKnwvEldSz8O4M8LvKy+cyPpngpHj+p8DClJ 7Kmg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771023; x=1717375823; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=StedKx2if52BenXHp9OmhhxzvGoDONYhwtdzrxe9+sA=; b=grQ0DvTxImcSGZQG/pMZjfSpZZ/e4LjxEpbeNtS8trpwA1MmY6G5BQJoBJk8PRS4Qe J+vEgpuSZNukqzaqpDXUco7YWUYXWYPz68VUUSJ3oBNX4hrkrRTTVmaZ1sEzNGIZN1Xv goNnW8XTWBXykDWkGv5XD+oMLEeOu1fNq92jq+tkLINdLno4eO2y210TYys69e2H2ACO BF3UW/4P/MXfFlRYF9+k/8AXSfUurQ4COkSKLlDtwe7D0rsO75USFZ4Ryfr3xlVxyySt 2ftUfkCQhNihCXJCJVHj3pAyyWiphFTLn8J19Jf4Mu+WBHMH6vb4OGlrffbgn0N8yWA+ HyfA== X-Gm-Message-State: AOJu0YygunrjXNm4sEThxwWjgVVtCrpYWWM48Wi+X43OdSWzDqtd3udT sikcD+cc+pWTYnvbS1eGls+MoCoY5sXwrCC0S2QWQJ/T/gU1UMAMalwFIPBAltm6UbHGLZhnLJg N X-Google-Smtp-Source: AGHT+IHc9uOfJZj3RfzYnjqaLaact8b/55e6Y7sYdz3wkZOuOeonVgLHeAUVJr2lgZ6InFkuElGa4w== X-Received: by 2002:a05:6a21:996:b0:1b1:d403:5272 with SMTP id adf61e73a8af0-1b212e659e2mr8305666637.57.1716771022694; Sun, 26 May 2024 17:50:22 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 25/28] target/i386: Convert do_xrstor to X86Access Date: Sun, 26 May 2024 17:49:58 -0700 Message-Id: <20240527005001.642825-26-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::433; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x433.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @linaro.org) X-ZM-MESSAGEID: 1716771067377100005 Content-Type: text/plain; charset="utf-8" Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/tcg/fpu_helper.c | 106 +++++++++++++++++++++-------------- 1 file changed, 64 insertions(+), 42 deletions(-) diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index f5748b72b8..1ac61c5d7d 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -2903,51 +2903,38 @@ void helper_fxrstor(CPUX86State *env, target_ulong = ptr) do_fxrstor(&ac, ptr); } =20 -static void do_xrstor(CPUX86State *env, target_ulong ptr, uint64_t rfbm, u= intptr_t ra) +static bool valid_xrstor_header(X86Access *ac, uint64_t *pxsbv, + target_ulong ptr) { uint64_t xstate_bv, xcomp_bv, reserve0; - X86Access ac; - unsigned size, size_ext; =20 - rfbm &=3D env->xcr0; + xstate_bv =3D access_ldq(ac, ptr + XO(header.xstate_bv)); + xcomp_bv =3D access_ldq(ac, ptr + XO(header.xcomp_bv)); + reserve0 =3D access_ldq(ac, ptr + XO(header.reserve0)); + *pxsbv =3D xstate_bv; =20 - size =3D sizeof(X86LegacyXSaveArea) + sizeof(X86XSaveHeader); - access_prepare(&ac, env, ptr, size, MMU_DATA_LOAD, ra); - - xstate_bv =3D access_ldq(&ac, ptr + XO(header.xstate_bv)); - - if ((int64_t)xstate_bv < 0) { - /* FIXME: Compact form. */ - raise_exception_ra(env, EXCP0D_GPF, ra); + /* + * XCOMP_BV bit 63 indicates compact form, which we do not support, + * and thus must raise #GP. That leaves us in standard form. + * In standard form, bytes 23:8 must be zero -- which is both + * XCOMP_BV and the following 64-bit field. + */ + if (xcomp_bv || reserve0) { + return false; } =20 - /* Standard form. */ - /* The XSTATE_BV field must not set bits not present in XCR0. */ - if (xstate_bv & ~env->xcr0) { - raise_exception_ra(env, EXCP0D_GPF, ra); - } + return (xstate_bv & ~ac->env->xcr0) =3D=3D 0; +} =20 - /* The XCOMP_BV field must be zero. Note that, as of the April 2016 - revision, the description of the XSAVE Header (Vol 1, Sec 13.4.2) - describes only XCOMP_BV, but the description of the standard form - of XRSTOR (Vol 1, Sec 13.8.1) checks bytes 23:8 for zero, which - includes the next 64-bit field. */ - xcomp_bv =3D access_ldq(&ac, ptr + XO(header.xcomp_bv)); - reserve0 =3D access_ldq(&ac, ptr + XO(header.reserve0)); - if (xcomp_bv || reserve0) { - raise_exception_ra(env, EXCP0D_GPF, ra); - } - - size_ext =3D xsave_area_size(rfbm & xstate_bv, false); - if (size < size_ext) { - /* TODO: See if existing page probe has covered extra size. */ - access_prepare(&ac, env, ptr, size_ext, MMU_DATA_LOAD, ra); - } +static void do_xrstor(X86Access *ac, target_ulong ptr, + uint64_t rfbm, uint64_t xstate_bv) +{ + CPUX86State *env =3D ac->env; =20 if (rfbm & XSTATE_FP_MASK) { if (xstate_bv & XSTATE_FP_MASK) { - do_xrstor_fpu(&ac, ptr); + do_xrstor_fpu(ac, ptr); } else { do_fninit(env); memset(env->fpregs, 0, sizeof(env->fpregs)); @@ -2956,23 +2943,23 @@ static void do_xrstor(CPUX86State *env, target_ulon= g ptr, uint64_t rfbm, uintptr if (rfbm & XSTATE_SSE_MASK) { /* Note that the standard form of XRSTOR loads MXCSR from memory whether or not the XSTATE_BV bit is set. */ - do_xrstor_mxcsr(&ac, ptr); + do_xrstor_mxcsr(ac, ptr); if (xstate_bv & XSTATE_SSE_MASK) { - do_xrstor_sse(&ac, ptr); + do_xrstor_sse(ac, ptr); } else { do_clear_sse(env); } } if (rfbm & XSTATE_YMM_MASK) { if (xstate_bv & XSTATE_YMM_MASK) { - do_xrstor_ymmh(&ac, ptr + XO(avx_state)); + do_xrstor_ymmh(ac, ptr + XO(avx_state)); } else { do_clear_ymmh(env); } } if (rfbm & XSTATE_BNDREGS_MASK) { if (xstate_bv & XSTATE_BNDREGS_MASK) { - do_xrstor_bndregs(&ac, ptr + XO(bndreg_state)); + do_xrstor_bndregs(ac, ptr + XO(bndreg_state)); env->hflags |=3D HF_MPX_IU_MASK; } else { memset(env->bnd_regs, 0, sizeof(env->bnd_regs)); @@ -2981,7 +2968,7 @@ static void do_xrstor(CPUX86State *env, target_ulong = ptr, uint64_t rfbm, uintptr } if (rfbm & XSTATE_BNDCSR_MASK) { if (xstate_bv & XSTATE_BNDCSR_MASK) { - do_xrstor_bndcsr(&ac, ptr + XO(bndcsr_state)); + do_xrstor_bndcsr(ac, ptr + XO(bndcsr_state)); } else { memset(&env->bndcs_regs, 0, sizeof(env->bndcs_regs)); } @@ -2990,7 +2977,7 @@ static void do_xrstor(CPUX86State *env, target_ulong = ptr, uint64_t rfbm, uintptr if (rfbm & XSTATE_PKRU_MASK) { uint64_t old_pkru =3D env->pkru; if (xstate_bv & XSTATE_PKRU_MASK) { - do_xrstor_pkru(&ac, ptr + XO(pkru_state)); + do_xrstor_pkru(ac, ptr + XO(pkru_state)); } else { env->pkru =3D 0; } @@ -3006,9 +2993,27 @@ static void do_xrstor(CPUX86State *env, target_ulong= ptr, uint64_t rfbm, uintptr void helper_xrstor(CPUX86State *env, target_ulong ptr, uint64_t rfbm) { uintptr_t ra =3D GETPC(); + X86Access ac; + uint64_t xstate_bv; + unsigned size, size_ext; =20 do_xsave_chk(env, ptr, ra); - do_xrstor(env, ptr, rfbm, ra); + + /* Begin with just the minimum size to validate the header. */ + size =3D sizeof(X86LegacyXSaveArea) + sizeof(X86XSaveHeader); + access_prepare(&ac, env, ptr, size, MMU_DATA_LOAD, ra); + if (!valid_xrstor_header(&ac, &xstate_bv, ptr)) { + raise_exception_ra(env, EXCP0D_GPF, ra); + } + + rfbm &=3D env->xcr0; + size_ext =3D xsave_area_size(rfbm & xstate_bv, false); + if (size < size_ext) { + /* TODO: See if existing page probe has covered extra size. */ + access_prepare(&ac, env, ptr, size_ext, MMU_DATA_LOAD, ra); + } + + do_xrstor(&ac, ptr, rfbm, xstate_bv); } =20 #if defined(CONFIG_USER_ONLY) @@ -3066,7 +3071,24 @@ void cpu_x86_xsave(CPUX86State *env, target_ulong pt= r, uint64_t rfbm) =20 void cpu_x86_xrstor(CPUX86State *env, target_ulong ptr, uint64_t rfbm) { - do_xrstor(env, ptr, rfbm, 0); + X86Access ac; + uint64_t xstate_bv; + unsigned size; + + /* + * Since this is only called from user-level signal handling, + * we should have done the job correctly there. + */ + assert((rfbm & ~env->xcr0) =3D=3D 0); + size =3D xsave_area_size(rfbm, false); + access_prepare(&ac, env, ptr, size, MMU_DATA_LOAD, 0); + + if (!valid_xrstor_header(&ac, &xstate_bv, ptr)) { + /* TODO: Report failure to caller. */ + xstate_bv &=3D env->xcr0; + } + + do_xrstor(&ac, ptr, rfbm, xstate_bv); } #endif =20 --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771023; x=1717375823; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=AI7rkjN7jKkGsGrZZgvFmIRDSXmmUvcz3SoDTGqstLM=; b=nRCqcQgLlgM56jfQb+Lu9xkcfy5ZxlvFXE/oumjmU+oDZjg1l7/d61zHuzrbYGwvqw 8ud5O7E8q/3YtvpQgPlFAqO4u07ggr5ZQAOJvEbtjVOCCT8uZhlifJVx3Y2IUvOECO0A ykscQ0qX6AOcoo27/c4P94O7w4g8vVtbFfpxfdiAWHSCMJaL410OzI8SRLTfainaSQHO A71Y5KMgav8r4ld5A1SbVFhvzY8y2WdXg6fwu4P+tktR5fvvyts+75l8RBO1PoravpWH o9julVcIg7eOitcrEgdd2D/NXm+zSve/w90FD63MCq01PiNBOWJMS2vRNGbMr2/lhVLb LdWA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771023; x=1717375823; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=AI7rkjN7jKkGsGrZZgvFmIRDSXmmUvcz3SoDTGqstLM=; b=gD4A3A4Y/fnSfnkR7357v/acyu9prtkEvJpz6Ocxr0OHcgyjbbPZrR0s9H6zMpKTVQ LHfU9gMPTztexoWf/g5iREWjMbx9QPOELrdwTKSlUvzzziM7yhQdb82vbRvvT/693w65 fyHuyDwU+dsqB2iZtnbUppmQUPLp6FVfyl3mx/0bKwU9GHr3kBjGFqWNGHSAv6l4WC+K xmoIhnEb69+q+WM7ao5LB5JZSmBmcs1XoA6F37He0Y8b9af1TgBSrNaY5d9x3lMUqbgr 048gcIuxdHwxb32OJpaX8tlmpcd+Q2dOl+RRpt352zFiSHh5oNxAarXjbbAkOz6/7l5+ ft+g== X-Gm-Message-State: AOJu0Yxo1+4yP4CPh8/6hgfM4JBKH4GzDTZan1643Hb1UiWu1rKGJQe4 k3jZn4FA7X51exkCuQtKj85tz0j+I/c62+2Ll9wh26k6FTcN/pAb7fZfAnaQrdcPiYBiNTD1HP8 g X-Google-Smtp-Source: AGHT+IG4h+VLQtYUatDtrPe70LxttKnxmagA5gf22F/fopOgjJWtIlq3ME79TmB9zCucgvQqxqup1A== X-Received: by 2002:a05:6870:718b:b0:24f:e0d2:7ee7 with SMTP id 586e51a60fabf-24fe0d27f78mr4301383fac.15.1716771023741; Sun, 26 May 2024 17:50:23 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 26/28] target/i386: Pass host pointer and size to cpu_x86_{fsave, frstor} Date: Sun, 26 May 2024 17:49:59 -0700 Message-Id: <20240527005001.642825-27-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2001:4860:4864:20::2a; envelope-from=richard.henderson@linaro.org; helo=mail-oa1-x2a.google.com X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1716771314177100003 Content-Type: text/plain; charset="utf-8" We have already validated the memory region in the course of validating the signal frame. No need to do it again within the helper function. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/cpu.h | 10 ++++++---- linux-user/i386/signal.c | 4 ++-- target/i386/tcg/fpu_helper.c | 26 ++++++++++++++++---------- 3 files changed, 24 insertions(+), 16 deletions(-) diff --git a/target/i386/cpu.h b/target/i386/cpu.h index fdd318963a..f6020e0b6b 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -2266,11 +2266,13 @@ int cpu_x86_get_descr_debug(CPUX86State *env, unsig= ned int selector, /* used for debug or cpu save/restore */ =20 /* cpu-exec.c */ -/* the following helpers are only usable in user mode simulation as - they can trigger unexpected exceptions */ +/* + * The following helpers are only usable in user mode simulation. + * The host pointers should come from lock_user(). + */ void cpu_x86_load_seg(CPUX86State *s, X86Seg seg_reg, int selector); -void cpu_x86_fsave(CPUX86State *s, target_ulong ptr, int data32); -void cpu_x86_frstor(CPUX86State *s, target_ulong ptr, int data32); +void cpu_x86_fsave(CPUX86State *s, void *host, size_t len); +void cpu_x86_frstor(CPUX86State *s, void *host, size_t len); void cpu_x86_fxsave(CPUX86State *s, target_ulong ptr); void cpu_x86_fxrstor(CPUX86State *s, target_ulong ptr); void cpu_x86_xsave(CPUX86State *s, target_ulong ptr, uint64_t rbfm); diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index ab760db5ea..dfbb811b56 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -373,7 +373,7 @@ static void setup_sigcontext(CPUX86State *env, __put_user(env->regs[R_ESP], &sc->esp_at_signal); __put_user(env->segs[R_SS].selector, (uint32_t *)&sc->ss); =20 - cpu_x86_fsave(env, fpstate_addr, 1); + cpu_x86_fsave(env, fpstate, sizeof(*fpstate)); fpstate->status =3D fpstate->swd; magic =3D (fpkind =3D=3D FPSTATE_FSAVE ? 0 : 0xffff); __put_user(magic, &fpstate->magic); @@ -702,7 +702,7 @@ static bool frstor_sigcontext(CPUX86State *env, FPState= Kind fpkind, * the merge within ENV by loading XSTATE/FXSTATE first, then * overriding with the FSTATE afterward. */ - cpu_x86_frstor(env, fpstate_addr, 1); + cpu_x86_frstor(env, fpstate, sizeof(*fpstate)); return true; } #endif diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index 1ac61c5d7d..05db16a152 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -3017,22 +3017,28 @@ void helper_xrstor(CPUX86State *env, target_ulong p= tr, uint64_t rfbm) } =20 #if defined(CONFIG_USER_ONLY) -void cpu_x86_fsave(CPUX86State *env, target_ulong ptr, int data32) +void cpu_x86_fsave(CPUX86State *env, void *host, size_t len) { - int size =3D (14 << data32) + 80; - X86Access ac; + X86Access ac =3D { + .haddr1 =3D host, + .size =3D 4 * 7 + 8 * 10, + .env =3D env, + }; =20 - access_prepare(&ac, env, ptr, size, MMU_DATA_STORE, 0); - do_fsave(&ac, ptr, data32); + assert(ac.size <=3D len); + do_fsave(&ac, 0, true); } =20 -void cpu_x86_frstor(CPUX86State *env, target_ulong ptr, int data32) +void cpu_x86_frstor(CPUX86State *env, void *host, size_t len) { - int size =3D (14 << data32) + 80; - X86Access ac; + X86Access ac =3D { + .haddr1 =3D host, + .size =3D 4 * 7 + 8 * 10, + .env =3D env, + }; =20 - access_prepare(&ac, env, ptr, size, MMU_DATA_LOAD, 0); - do_frstor(&ac, ptr, data32); + assert(ac.size <=3D len); + do_frstor(&ac, 0, true); } =20 void cpu_x86_fxsave(CPUX86State *env, target_ulong ptr) --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771064706271.47701075463715; Sun, 26 May 2024 17:51:04 -0700 (PDT) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1sBOZY-0007Rp-PX; Sun, 26 May 2024 20:50:44 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1sBOZO-0007IA-8i for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:34 -0400 Received: from mail-pf1-x42f.google.com ([2607:f8b0:4864:20::42f]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1sBOZK-0003ii-2J for qemu-devel@nongnu.org; Sun, 26 May 2024 20:50:33 -0400 Received: by mail-pf1-x42f.google.com with SMTP id d2e1a72fcca58-6f966840af7so2064456b3a.2 for ; Sun, 26 May 2024 17:50:25 -0700 (PDT) Received: from stoup.. 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:24 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771024; x=1717375824; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=aa3AsEcYakMh3o0hu9O0oS/cWYuG+cYxYdDSiNcDG9s=; b=vjD3bJrI/rCK8JCyEEO4eah0+kA+lcCI+PPMKKTk/BQMCV/Kc2x+b5DJmdpo3d8KMQ 1vYDMKrpwTl8hLGaJgWRztpSMtyJINFfYJB13qqdMQQAnPPgWJMhsY1P4+t3tFgkRtMo 2DAMAyIG4PWRt9c39t/XX7tNRaEwM265PgnKgbLVvYZba+f88rPW/pAOTo7s6qM43w0N bj5pugj7iQX74Prf8wqOrEJnoqO+TdZoPlTrIkZXilI8smcJiw/CwqZbul4TBh4Iv9RU 1bUdLjoc2SYgpXBrJXK37/U8IZiHGZSyGZEoYidHKcKEZIk5slrf2XOTB0aKucNJHd5K 7xQQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771024; x=1717375824; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=aa3AsEcYakMh3o0hu9O0oS/cWYuG+cYxYdDSiNcDG9s=; b=U07NxsE1K5lpYWWE9CFH1oW9rLiMhvfmmGlsislvwpnLHBR5pI9zwmS3xhf70rDwvG ijdUegcCvY6ID/C1k8taPmnRb/krBTzuXuW/p8/eWX6lY5HaJ0H4oYtyUOmJflZ/pdd4 tx29ZEVfDub5Imktp/xKBccf5J8IavwyBjRJTRXjk27oNwS12jfPVask/AmhS/fBlf7c LalMZiGnIGazomI8jnjPTtRKOa6Jwv/W/sQcrKMlYYFGEb2AV2jGwHHmIxwZWW1tGesR FesYLCHSqf3l81xwbcwfl14UvyDTxQvEy+evj3gSElnZPYKqaBWMBrld2DkPIS2HDXw6 nEvw== X-Gm-Message-State: AOJu0YwaZjJDKwvcmJliucIJ8hHMugI+HqyqOe/pWWvuiARqglpRkbj3 ANCl8lhYfTQKYEHTFqporTje9J/rzgsYt3PWos3gZDBJU2GlLg5QoQe0pBxbgwDOQa8+Z6Xlu95 d X-Google-Smtp-Source: AGHT+IG/QTsbNniHHz8qpAY0e60uGdOv8owZPW+6m7GEGVtlZgYGzsZJ2bXyhQfssKKV/33gI5zJ3g== X-Received: by 2002:a05:6a00:e0c:b0:6ed:caf6:6e54 with SMTP id d2e1a72fcca58-6f8f42bd52amr7461438b3a.28.1716771024676; Sun, 26 May 2024 17:50:24 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 27/28] target/i386: Pass host pointer and size to cpu_x86_{fxsave, fxrstor} Date: Sun, 26 May 2024 17:50:00 -0700 Message-Id: <20240527005001.642825-28-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::42f; envelope-from=richard.henderson@linaro.org; helo=mail-pf1-x42f.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1716771065485100001 Content-Type: text/plain; charset="utf-8" We have already validated the memory region in the course of validating the signal frame. No need to do it again within the helper function. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/cpu.h | 4 ++-- linux-user/i386/signal.c | 13 +++++-------- target/i386/tcg/fpu_helper.c | 26 ++++++++++++++++---------- 3 files changed, 23 insertions(+), 20 deletions(-) diff --git a/target/i386/cpu.h b/target/i386/cpu.h index f6020e0b6b..257cd5a617 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -2273,8 +2273,8 @@ int cpu_x86_get_descr_debug(CPUX86State *env, unsigne= d int selector, void cpu_x86_load_seg(CPUX86State *s, X86Seg seg_reg, int selector); void cpu_x86_fsave(CPUX86State *s, void *host, size_t len); void cpu_x86_frstor(CPUX86State *s, void *host, size_t len); -void cpu_x86_fxsave(CPUX86State *s, target_ulong ptr); -void cpu_x86_fxrstor(CPUX86State *s, target_ulong ptr); +void cpu_x86_fxsave(CPUX86State *s, void *host, size_t len); +void cpu_x86_fxrstor(CPUX86State *s, void *host, size_t len); void cpu_x86_xsave(CPUX86State *s, target_ulong ptr, uint64_t rbfm); void cpu_x86_xrstor(CPUX86State *s, target_ulong ptr, uint64_t rbfm); =20 diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index dfbb811b56..2e2972002b 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -294,14 +294,11 @@ static abi_ptr get_sigframe(struct target_sigaction *= ka, CPUX86State *env, * Set up a signal frame. */ =20 -static void fxsave_sigcontext(CPUX86State *env, X86LegacyXSaveArea *fxstat= e, - abi_ptr fxstate_addr) +static void fxsave_sigcontext(CPUX86State *env, X86LegacyXSaveArea *fxstat= e) { struct target_fpx_sw_bytes *sw =3D (void *)&fxstate->sw_reserved; =20 - /* fxstate_addr must be 16 byte aligned for fxsave */ - assert(!(fxstate_addr & 0xf)); - cpu_x86_fxsave(env, fxstate_addr); + cpu_x86_fxsave(env, fxstate, sizeof(*fxstate)); __put_user(0, &sw->magic1); } =20 @@ -412,7 +409,7 @@ static void setup_sigcontext(CPUX86State *env, xsave_sigcontext(env, fxstate, fpstate_addr, fxstate_addr, fpend_a= ddr); break; case FPSTATE_FXSAVE: - fxsave_sigcontext(env, fxstate, fxstate_addr); + fxsave_sigcontext(env, fxstate); break; default: break; @@ -669,7 +666,7 @@ static bool xrstor_sigcontext(CPUX86State *env, FPState= Kind fpkind, break; } =20 - cpu_x86_fxrstor(env, fxstate_addr); + cpu_x86_fxrstor(env, fxstate, sizeof(*fxstate)); return true; } =20 @@ -687,7 +684,7 @@ static bool frstor_sigcontext(CPUX86State *env, FPState= Kind fpkind, } break; case FPSTATE_FXSAVE: - cpu_x86_fxrstor(env, fxstate_addr); + cpu_x86_fxrstor(env, fxstate, sizeof(*fxstate)); break; case FPSTATE_FSAVE: break; diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index 05db16a152..0e5368951f 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -3041,22 +3041,28 @@ void cpu_x86_frstor(CPUX86State *env, void *host, s= ize_t len) do_frstor(&ac, 0, true); } =20 -void cpu_x86_fxsave(CPUX86State *env, target_ulong ptr) +void cpu_x86_fxsave(CPUX86State *env, void *host, size_t len) { - X86Access ac; + X86Access ac =3D { + .haddr1 =3D host, + .size =3D sizeof(X86LegacyXSaveArea), + .env =3D env, + }; =20 - access_prepare(&ac, env, ptr, sizeof(X86LegacyXSaveArea), - MMU_DATA_STORE, 0); - do_fxsave(&ac, ptr); + assert(ac.size <=3D len); + do_fxsave(&ac, 0); } =20 -void cpu_x86_fxrstor(CPUX86State *env, target_ulong ptr) +void cpu_x86_fxrstor(CPUX86State *env, void *host, size_t len) { - X86Access ac; + X86Access ac =3D { + .haddr1 =3D host, + .size =3D sizeof(X86LegacyXSaveArea), + .env =3D env, + }; =20 - access_prepare(&ac, env, ptr, sizeof(X86LegacyXSaveArea), - MMU_DATA_LOAD, 0); - do_fxrstor(&ac, ptr); + assert(ac.size <=3D len); + do_fxrstor(&ac, 0); } =20 void cpu_x86_xsave(CPUX86State *env, target_ulong ptr, uint64_t rfbm) --=20 2.34.1 From nobody Mon Nov 25 07:33:39 2024 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linaro.org Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1716771130330773.0518284087957; 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[174.21.72.5]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-6f8fd6d7598sm3942958b3a.220.2024.05.26.17.50.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 26 May 2024 17:50:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1716771025; x=1717375825; darn=nongnu.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=RKJkFZRwEV4YZxjsRrsydfwYbnWmnSukOPtEYS8mQtY=; b=y9mj+An+h+3lx1rDl6dgpPsx+8O4KNrEed/SXgXeTeWVAJtO/CcTwqKc66yviPVSSI k+AIQS/mKk2snZDgMEJRUJEDYHktetCPWUAtDlI7wZI0rxod1BT0sBSS2YZyGl5xXEoc hr9vUziGQqjtDcu6OF9UggRK7NtZsmXORxNklF1vIpFPic+57uVOcIMAos1vg2MTHpL2 spFdyFncqjaxp+SC1VNXMsLr6D7gYDKdTdQyyhlJto7RLeK6qFTDMCwrzDdYiYUJDHAD hoHGFOskSNm/labfZSwloNiMS8cdsNNrXQJOUPEMBOPKvbqEK2AONU/T+PvEtqPp2umD F5WQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1716771025; x=1717375825; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=RKJkFZRwEV4YZxjsRrsydfwYbnWmnSukOPtEYS8mQtY=; b=F73WKWRl3ATwEw8lzXRBfabR/C6ZnPPJgVEuLmpaPecSKkwFLIxxzAen80TOyWB+XD P6MGQP0EqAXtUbg/oPxwiEZcqyOBCwTbLKZStwGrbFrbKhvUb4CVNiTvhSTDVhoAknVy Ejcu4BRMHsVJPVNbgouRhFtiSwwcUJQVDphmuqp9JVAq7sgJS/41jJxL/j1k9Ehm9Kc6 jgfuDYnZtLG1LO64b74YzunKEY2oSsUFw8bcFN4N+C8m+/lvoPyxahBFYxgvC6TEVKaV /1xDqjjKqYtGokG1D0W5pPKve5IsYtofL1RMf3OaVIUnHU6pAK2d1NFb6JgRnWWtTonp faBw== X-Gm-Message-State: AOJu0YwEwWGRNPm9mFSC8QI426cOGBP7nbSNgOy9ijtXip5lG1HUZIyP C0cmWxfB2ygwuspsLFAJOpXsyCOMl51HIYOOLdjIHrLUOje0odyNVDzVa2d8Z+rY7er1eP2iO6v R X-Google-Smtp-Source: AGHT+IHUWKxBuzjHK2YT6HdTVDoAzzKhy0+KTLFltt57G/haxlmnMJQSCpSx41FlWmrOzFDqifPbHQ== X-Received: by 2002:a05:6a20:72a6:b0:1af:f64c:b795 with SMTP id adf61e73a8af0-1b212d398c4mr9292045637.30.1716771025557; Sun, 26 May 2024 17:50:25 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Cc: Paolo Bonzini Subject: [PULL 28/28] target/i386: Pass host pointer and size to cpu_x86_{xsave, xrstor} Date: Sun, 26 May 2024 17:50:01 -0700 Message-Id: <20240527005001.642825-29-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240527005001.642825-1-richard.henderson@linaro.org> References: <20240527005001.642825-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=2607:f8b0:4864:20::52e; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x52e.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1716771131575100007 Content-Type: text/plain; charset="utf-8" We have already validated the memory region in the course of validating the signal frame. No need to do it again within the helper function. In addition, return failure when the header contains invalid xstate_bv. The kernel handles this via exception handling within XSTATE_OP within xrstor_from_user_sigframe. Reviewed-by: Paolo Bonzini Signed-off-by: Richard Henderson --- target/i386/cpu.h | 4 ++-- linux-user/i386/signal.c | 20 ++++++++++++-------- target/i386/tcg/fpu_helper.c | 36 +++++++++++++++++++----------------- 3 files changed, 33 insertions(+), 27 deletions(-) diff --git a/target/i386/cpu.h b/target/i386/cpu.h index 257cd5a617..c64ef0c1a2 100644 --- a/target/i386/cpu.h +++ b/target/i386/cpu.h @@ -2275,8 +2275,8 @@ void cpu_x86_fsave(CPUX86State *s, void *host, size_t= len); void cpu_x86_frstor(CPUX86State *s, void *host, size_t len); void cpu_x86_fxsave(CPUX86State *s, void *host, size_t len); void cpu_x86_fxrstor(CPUX86State *s, void *host, size_t len); -void cpu_x86_xsave(CPUX86State *s, target_ulong ptr, uint64_t rbfm); -void cpu_x86_xrstor(CPUX86State *s, target_ulong ptr, uint64_t rbfm); +void cpu_x86_xsave(CPUX86State *s, void *host, size_t len, uint64_t rbfm); +bool cpu_x86_xrstor(CPUX86State *s, void *host, size_t len, uint64_t rbfm); =20 /* cpu.c */ void x86_cpu_vendor_words2str(char *dst, uint32_t vendor1, diff --git a/linux-user/i386/signal.c b/linux-user/i386/signal.c index 2e2972002b..cb90711834 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -326,7 +326,7 @@ static void xsave_sigcontext(CPUX86State *env, =20 /* Zero the header, XSAVE *adds* features to an existing save state. = */ memset(fxstate + 1, 0, sizeof(X86XSaveHeader)); - cpu_x86_xsave(env, xstate_addr, env->xcr0); + cpu_x86_xsave(env, fxstate, fpend_addr - xstate_addr, env->xcr0); =20 __put_user(TARGET_FP_XSTATE_MAGIC1, &sw->magic1); __put_user(extended_size, &sw->extended_size); @@ -611,6 +611,8 @@ static bool xrstor_sigcontext(CPUX86State *env, FPState= Kind fpkind, uint32_t magic1, magic2; uint32_t extended_size, xstate_size, min_size, max_size; uint64_t xfeatures; + void *xstate; + bool ok; =20 switch (fpkind) { case FPSTATE_XSAVE: @@ -641,8 +643,10 @@ static bool xrstor_sigcontext(CPUX86State *env, FPStat= eKind fpkind, return false; } =20 - if (!access_ok(env_cpu(env), VERIFY_READ, fxstate_addr, - xstate_size + TARGET_FP_XSTATE_MAGIC2_SIZE)) { + /* Re-lock the entire xstate area, with the extensions and magic. = */ + xstate =3D lock_user(VERIFY_READ, fxstate_addr, + xstate_size + TARGET_FP_XSTATE_MAGIC2_SIZE, 1); + if (!xstate) { return false; } =20 @@ -652,15 +656,15 @@ static bool xrstor_sigcontext(CPUX86State *env, FPSta= teKind fpkind, * fpstate layout with out copying the extended state information * in the memory layout. */ - if (get_user_u32(magic2, fxstate_addr + xstate_size)) { - return false; - } + magic2 =3D tswap32(*(uint32_t *)(xstate + xstate_size)); if (magic2 !=3D TARGET_FP_XSTATE_MAGIC2) { + unlock_user(xstate, fxstate_addr, 0); break; } =20 - cpu_x86_xrstor(env, fxstate_addr, xfeatures); - return true; + ok =3D cpu_x86_xrstor(env, xstate, xstate_size, xfeatures); + unlock_user(xstate, fxstate_addr, 0); + return ok; =20 default: break; diff --git a/target/i386/tcg/fpu_helper.c b/target/i386/tcg/fpu_helper.c index 0e5368951f..c17eaaa22b 100644 --- a/target/i386/tcg/fpu_helper.c +++ b/target/i386/tcg/fpu_helper.c @@ -3065,42 +3065,44 @@ void cpu_x86_fxrstor(CPUX86State *env, void *host, = size_t len) do_fxrstor(&ac, 0); } =20 -void cpu_x86_xsave(CPUX86State *env, target_ulong ptr, uint64_t rfbm) +void cpu_x86_xsave(CPUX86State *env, void *host, size_t len, uint64_t rfbm) { - X86Access ac; - unsigned size; + X86Access ac =3D { + .haddr1 =3D host, + .env =3D env, + }; =20 /* * Since this is only called from user-level signal handling, * we should have done the job correctly there. */ assert((rfbm & ~env->xcr0) =3D=3D 0); - size =3D xsave_area_size(rfbm, false); - - access_prepare(&ac, env, ptr, size, MMU_DATA_STORE, 0); - do_xsave_access(&ac, ptr, rfbm, get_xinuse(env), rfbm); + ac.size =3D xsave_area_size(rfbm, false); + assert(ac.size <=3D len); + do_xsave_access(&ac, 0, rfbm, get_xinuse(env), rfbm); } =20 -void cpu_x86_xrstor(CPUX86State *env, target_ulong ptr, uint64_t rfbm) +bool cpu_x86_xrstor(CPUX86State *env, void *host, size_t len, uint64_t rfb= m) { - X86Access ac; + X86Access ac =3D { + .haddr1 =3D host, + .env =3D env, + }; uint64_t xstate_bv; - unsigned size; =20 /* * Since this is only called from user-level signal handling, * we should have done the job correctly there. */ assert((rfbm & ~env->xcr0) =3D=3D 0); - size =3D xsave_area_size(rfbm, false); - access_prepare(&ac, env, ptr, size, MMU_DATA_LOAD, 0); + ac.size =3D xsave_area_size(rfbm, false); + assert(ac.size <=3D len); =20 - if (!valid_xrstor_header(&ac, &xstate_bv, ptr)) { - /* TODO: Report failure to caller. */ - xstate_bv &=3D env->xcr0; + if (!valid_xrstor_header(&ac, &xstate_bv, 0)) { + return false; } - - do_xrstor(&ac, ptr, rfbm, xstate_bv); + do_xrstor(&ac, 0, rfbm, xstate_bv); + return true; } #endif =20 --=20 2.34.1