From nobody Thu Apr 25 09:01:37 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 1637657506807226.52686441961225; Tue, 23 Nov 2021 00:51:46 -0800 (PST) Received: from localhost ([::1]:45864 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mpRWi-0003px-6b for importer@patchew.org; Tue, 23 Nov 2021 03:51:44 -0500 Received: from eggs.gnu.org ([209.51.188.92]:36476) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mpRVd-0002Jp-Ok for qemu-devel@nongnu.org; Tue, 23 Nov 2021 03:50:37 -0500 Received: from [2a00:1450:4864:20::336] (port=39681 helo=mail-wm1-x336.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1mpRVc-00038u-0o for qemu-devel@nongnu.org; Tue, 23 Nov 2021 03:50:37 -0500 Received: by mail-wm1-x336.google.com with SMTP id n33-20020a05600c502100b0032fb900951eso1487411wmr.4 for ; Tue, 23 Nov 2021 00:50:35 -0800 (PST) Received: from cloudburst.home (149.164.14.37.dynamic.jazztel.es. [37.14.164.149]) by smtp.gmail.com with ESMTPSA id 9sm14366078wry.0.2021.11.23.00.50.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Nov 2021 00:50:34 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=BzPbWqjEolFXEzzt/cvI78RsQ3Bzsg4Rtfs0RWH92N0=; b=ZFvFT9x2dCyZnuTYNS/78rCg45zx2RxVGqT7xO2A2ulLs15OAIAe62Y/aAqBKxUHQd 9yqCjiTLrwlotgKmJj03c/Iqhyn8aa/c0HxfkCE+2R0t7EwMNPzkuszFAvurfq3k1/q5 OKIHNrvkuCr5iEGRZGx2eZIvjfpwgLUeBkdAhi9D3mEE12NMIrKF6Y8dLeaQda/m9kjY sakienePS5xNWsls7Zq6kAkcPtEVRz0z9oWfIJ6HtMOhMI+xQbmwU+71XLlF0cWnKnac 3QKTV5yOjonakK0P1OpUzPsp3NinCuCGZYy7NScxd7IofEQWjYHBu0ZmseTMyBR1ld7r Lezg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=BzPbWqjEolFXEzzt/cvI78RsQ3Bzsg4Rtfs0RWH92N0=; b=1YCOvtFA0Bfm0edhryIq/ZhAQ8XqPogTNcU+M7ScfQYQvO3NxEo2jI9zs2/+JbtfRZ WKV23wfvSu5DIAtav18Ovy+s6fIDwOah86igJldZmWFZplncJV1gCEjS73BuPYzuCwyY 25mIkmlZNMxhSbI+4dxpzYo6jiX4YzdWxHPQxDt4nBI417ROdiy3D3l+xKQEY1fvZTgK I0qZFRwVSHUzmlO+wavN4/vfqLY/+dGPI4EsA2F1S6wR9bF4J2aE2khzfX5HE5ieXjKu 2Mbr0JyAIaunfzMxNW+IqQaSusdBCBCRKRHPQymJ0zpmprvBRbHiH9Vb6kDepZSf9b2g rbbg== X-Gm-Message-State: AOAM533vQM9uVuMyj7pMYp2XVTOGvZh5v8on4OGlEdvzOu2kcR8coCTT 4sjdPa7myxZpah2HO00WPYLzLMExDcG1zLFLUVM= X-Google-Smtp-Source: ABdhPJzHwbBevrQLKQ5wUNtFLdTqQhRS6mpH9P1FAc+CjOG1d/O3AMQlv3lc8Rfje2oTM1irCPA+cw== X-Received: by 2002:a05:600c:4f8f:: with SMTP id n15mr1002730wmq.70.1637657434501; Tue, 23 Nov 2021 00:50:34 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 1/2] linux-user: Add host_signal_set_pc to set pc in mcontext Date: Tue, 23 Nov 2021 09:50:29 +0100 Message-Id: <20211123085030.465072-2-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211123085030.465072-1-richard.henderson@linaro.org> References: <20211123085030.465072-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::336 (failed) 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=2a00:1450:4864:20::336; envelope-from=richard.henderson@linaro.org; helo=mail-wm1-x336.google.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 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, PDS_HP_HELO_NORDNS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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: , Cc: Laurent Vivier , Warner Losh , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1637657507967100001 From: Warner Losh Add a new function host_signal_set_pc to set the next pc in an mcontext. The caller should ensure this is a valid PC for execution. Acked-by: Laurent Vivier Signed-off-by: Warner Losh Reviewed-by: Philippe Mathieu-Daud=C3=A9 Reviewed-by: Richard Henderson Message-Id: <20211113045603.60391-2-imp@bsdimp.com> Signed-off-by: Richard Henderson --- linux-user/host/aarch64/host-signal.h | 5 +++++ linux-user/host/alpha/host-signal.h | 5 +++++ linux-user/host/arm/host-signal.h | 5 +++++ linux-user/host/i386/host-signal.h | 5 +++++ linux-user/host/mips/host-signal.h | 5 +++++ linux-user/host/ppc/host-signal.h | 5 +++++ linux-user/host/riscv/host-signal.h | 5 +++++ linux-user/host/s390/host-signal.h | 5 +++++ linux-user/host/sparc/host-signal.h | 9 +++++++++ linux-user/host/x86_64/host-signal.h | 5 +++++ 10 files changed, 54 insertions(+) diff --git a/linux-user/host/aarch64/host-signal.h b/linux-user/host/aarch6= 4/host-signal.h index 0c0b08383a..9770b36dc1 100644 --- a/linux-user/host/aarch64/host-signal.h +++ b/linux-user/host/aarch64/host-signal.h @@ -35,6 +35,11 @@ static inline uintptr_t host_signal_pc(ucontext_t *uc) return uc->uc_mcontext.pc; } =20 +static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc) +{ + uc->uc_mcontext.pc =3D pc; +} + static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc) { struct _aarch64_ctx *hdr; diff --git a/linux-user/host/alpha/host-signal.h b/linux-user/host/alpha/ho= st-signal.h index e080be412f..f4c942948a 100644 --- a/linux-user/host/alpha/host-signal.h +++ b/linux-user/host/alpha/host-signal.h @@ -16,6 +16,11 @@ static inline uintptr_t host_signal_pc(ucontext_t *uc) return uc->uc_mcontext.sc_pc; } =20 +static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc) +{ + uc->uc_mcontext.sc_pc =3D pc; +} + static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc) { uint32_t *pc =3D (uint32_t *)host_signal_pc(uc); diff --git a/linux-user/host/arm/host-signal.h b/linux-user/host/arm/host-s= ignal.h index efb165c0c5..6c095773c0 100644 --- a/linux-user/host/arm/host-signal.h +++ b/linux-user/host/arm/host-signal.h @@ -16,6 +16,11 @@ static inline uintptr_t host_signal_pc(ucontext_t *uc) return uc->uc_mcontext.arm_pc; } =20 +static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc) +{ + uc->uc_mcontext.arm_pc =3D pc; +} + static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc) { /* diff --git a/linux-user/host/i386/host-signal.h b/linux-user/host/i386/host= -signal.h index 4c8eef99ce..abe1ece5c9 100644 --- a/linux-user/host/i386/host-signal.h +++ b/linux-user/host/i386/host-signal.h @@ -16,6 +16,11 @@ static inline uintptr_t host_signal_pc(ucontext_t *uc) return uc->uc_mcontext.gregs[REG_EIP]; } =20 +static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc) +{ + uc->uc_mcontext.gregs[REG_EIP] =3D pc; +} + static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc) { return uc->uc_mcontext.gregs[REG_TRAPNO] =3D=3D 0xe diff --git a/linux-user/host/mips/host-signal.h b/linux-user/host/mips/host= -signal.h index ef341f7c20..c666ed8c3f 100644 --- a/linux-user/host/mips/host-signal.h +++ b/linux-user/host/mips/host-signal.h @@ -16,6 +16,11 @@ static inline uintptr_t host_signal_pc(ucontext_t *uc) return uc->uc_mcontext.pc; } =20 +static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc) +{ + uc->uc_mcontext.pc =3D pc; +} + #if defined(__misp16) || defined(__mips_micromips) #error "Unsupported encoding" #endif diff --git a/linux-user/host/ppc/host-signal.h b/linux-user/host/ppc/host-s= ignal.h index a491c413dc..1d8e658ff7 100644 --- a/linux-user/host/ppc/host-signal.h +++ b/linux-user/host/ppc/host-signal.h @@ -16,6 +16,11 @@ static inline uintptr_t host_signal_pc(ucontext_t *uc) return uc->uc_mcontext.regs->nip; } =20 +static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc) +{ + uc->uc_mcontext.regs->nip =3D pc; +} + static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc) { return uc->uc_mcontext.regs->trap !=3D 0x400 diff --git a/linux-user/host/riscv/host-signal.h b/linux-user/host/riscv/ho= st-signal.h index 3b168cb58b..a4f170efb0 100644 --- a/linux-user/host/riscv/host-signal.h +++ b/linux-user/host/riscv/host-signal.h @@ -16,6 +16,11 @@ static inline uintptr_t host_signal_pc(ucontext_t *uc) return uc->uc_mcontext.__gregs[REG_PC]; } =20 +static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc) +{ + uc->uc_mcontext.__gregs[REG_PC] =3D pc; +} + static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc) { /* diff --git a/linux-user/host/s390/host-signal.h b/linux-user/host/s390/host= -signal.h index 26990e4893..a524f2ab00 100644 --- a/linux-user/host/s390/host-signal.h +++ b/linux-user/host/s390/host-signal.h @@ -16,6 +16,11 @@ static inline uintptr_t host_signal_pc(ucontext_t *uc) return uc->uc_mcontext.psw.addr; } =20 +static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc) +{ + uc->uc_mcontext.psw.addr =3D pc; +} + static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc) { uint16_t *pinsn =3D (uint16_t *)host_signal_pc(uc); diff --git a/linux-user/host/sparc/host-signal.h b/linux-user/host/sparc/ho= st-signal.h index 5e71d33f8e..7342936071 100644 --- a/linux-user/host/sparc/host-signal.h +++ b/linux-user/host/sparc/host-signal.h @@ -20,6 +20,15 @@ static inline uintptr_t host_signal_pc(ucontext_t *uc) #endif } =20 +static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc) +{ +#ifdef __arch64__ + uc->uc_mcontext.mc_gregs[MC_PC] =3D pc; +#else + uc->uc_mcontext.gregs[REG_PC] =3D pc; +#endif +} + static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc) { uint32_t insn =3D *(uint32_t *)host_signal_pc(uc); diff --git a/linux-user/host/x86_64/host-signal.h b/linux-user/host/x86_64/= host-signal.h index 883d2fcf65..c71d597eb2 100644 --- a/linux-user/host/x86_64/host-signal.h +++ b/linux-user/host/x86_64/host-signal.h @@ -15,6 +15,11 @@ static inline uintptr_t host_signal_pc(ucontext_t *uc) return uc->uc_mcontext.gregs[REG_RIP]; } =20 +static inline void host_signal_set_pc(ucontext_t *uc, uintptr_t pc) +{ + uc->uc_mcontext.gregs[REG_RIP] =3D pc; +} + static inline bool host_signal_write(siginfo_t *info, ucontext_t *uc) { return uc->uc_mcontext.gregs[REG_TRAPNO] =3D=3D 0xe --=20 2.25.1 From nobody Thu Apr 25 09:01:37 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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[37.14.164.149]) by smtp.gmail.com with ESMTPSA id 9sm14366078wry.0.2021.11.23.00.50.34 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 23 Nov 2021 00:50:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=TegKkzXrFvH9IWxA6z3Z0Oh/lWQGtwfq10HmF8kapGI=; b=EiAur3mu6oQua79JSwuLUA/omis+x9CoWYQI9kbTqBJtd1xS3D7x9uP7m6S2/y5TUX zVOaPek8HwvjerLwTmSaAeFHVtTb2E9P1zc9gQfR9ZFbnwbRp+ePOHFYTV8b0Xur5Tyx pO0f/w/qfTYKYKyunmYcypEY8hTikn90WRvRSo8IvlXqJgqfVbEhhfi7+w/QMvMrpe0a Msn6fSQIzEMNX1LeqZKtI5JZUaHkBt7vOUIdbC5G8ettKUQVwEpcPfgkP1UYlnWBT79V +J2k2xHDDUh/z8qB7L9O+y5D24SUo66WMiMrF4yDuiBVSBHlccI1WSQ+Ns4Lox/33yRf y5GQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=TegKkzXrFvH9IWxA6z3Z0Oh/lWQGtwfq10HmF8kapGI=; b=gseCood7A9ilCvP51VdUoA5GUam4lAVgCewuMJk7Y+CFAlAb4BV2uCsF5u1YIAMqDd yUAeFkttj0ADw/3wRJ9ZWz+TQOJ8rtvwhygXyzfS550di1q6DPhb5mNKoSxc4zYPzu0D uPBXTosna16zzMeUxHg0LK3/Tr+RVHEkPAb/baGu1u+fRiBV7NWcwSZAd9vYeJSQ0IoB w1+DVOk+dnuYfVnqvxqY5uTArkGr423nksKWs4zRg8DyT1qyx9Eg5FynJviNKYQsczQb olGHHD/Xo82TgPu4PsB88GX0YtOfuPWVOy68eOg638MfuWqeDWWcPGGcsz82+oj08MPp tOMA== X-Gm-Message-State: AOAM533fjRdONhHDzcYUlKeECyYBiC93t1N/korwxpWzPu3pZtPqwxmh oIZpyaXqYytLq4B5jqRXN139KH5/TbQAqiSopgo= X-Google-Smtp-Source: ABdhPJy/BIXkLLiEb5nt5QUQManbWdCX2HL+VQASGYw0hY7LRxrKhwOSBUQpQ2DzDFfm5G5jjfdTvg== X-Received: by 2002:a05:600c:358a:: with SMTP id p10mr951931wmq.180.1637657436001; Tue, 23 Nov 2021 00:50:36 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PULL 2/2] linux-user/signal.c: Create a common rewind_if_in_safe_syscall Date: Tue, 23 Nov 2021 09:50:30 +0100 Message-Id: <20211123085030.465072-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211123085030.465072-1-richard.henderson@linaro.org> References: <20211123085030.465072-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::32a (failed) 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=2a00:1450:4864:20::32a; envelope-from=richard.henderson@linaro.org; helo=mail-wm1-x32a.google.com X-Spam_score_int: -12 X-Spam_score: -1.3 X-Spam_bar: - X-Spam_report: (-1.3 / 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, PDS_HP_HELO_NORDNS=0.001, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 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: , Cc: Laurent Vivier , Warner Losh , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1637657620279100001 From: Warner Losh All instances of rewind_if_in_safe_syscall are the same, differing only in how the instruction point is fetched from the ucontext and the size of the registers. Use host_signal_pc and new host_signal_set_pc interfaces to fetch the pointer to the PC and adjust if needed. Delete all the old copies of rewind_if_in_safe_syscall. Acked-by: Laurent Vivier Signed-off-by: Warner Losh Reviewed-by: Richard Henderson Reviewed-by: Philippe Mathieu-Daud=C3=A9 Message-Id: <20211113045603.60391-3-imp@bsdimp.com> [rth: include safe-syscall.h, simplify ifdefs] Signed-off-by: Richard Henderson --- linux-user/host/aarch64/hostdep.h | 20 -------------------- linux-user/host/arm/hostdep.h | 20 -------------------- linux-user/host/i386/hostdep.h | 20 -------------------- linux-user/host/ppc64/hostdep.h | 20 -------------------- linux-user/host/riscv/hostdep.h | 20 -------------------- linux-user/host/s390x/hostdep.h | 20 -------------------- linux-user/host/x86_64/hostdep.h | 20 -------------------- linux-user/safe-syscall.h | 3 +++ linux-user/signal.c | 15 ++++++++++++--- 9 files changed, 15 insertions(+), 143 deletions(-) diff --git a/linux-user/host/aarch64/hostdep.h b/linux-user/host/aarch64/ho= stdep.h index a8d41a21ad..39299d798a 100644 --- a/linux-user/host/aarch64/hostdep.h +++ b/linux-user/host/aarch64/hostdep.h @@ -15,24 +15,4 @@ /* We have a safe-syscall.inc.S */ #define HAVE_SAFE_SYSCALL =20 -#ifndef __ASSEMBLER__ - -/* These are defined by the safe-syscall.inc.S file */ -extern char safe_syscall_start[]; -extern char safe_syscall_end[]; - -/* Adjust the signal context to rewind out of safe-syscall if we're in it = */ -static inline void rewind_if_in_safe_syscall(void *puc) -{ - ucontext_t *uc =3D puc; - __u64 *pcreg =3D &uc->uc_mcontext.pc; - - if (*pcreg > (uintptr_t)safe_syscall_start - && *pcreg < (uintptr_t)safe_syscall_end) { - *pcreg =3D (uintptr_t)safe_syscall_start; - } -} - -#endif /* __ASSEMBLER__ */ - #endif diff --git a/linux-user/host/arm/hostdep.h b/linux-user/host/arm/hostdep.h index 9276fe6ceb..86b137875a 100644 --- a/linux-user/host/arm/hostdep.h +++ b/linux-user/host/arm/hostdep.h @@ -15,24 +15,4 @@ /* We have a safe-syscall.inc.S */ #define HAVE_SAFE_SYSCALL =20 -#ifndef __ASSEMBLER__ - -/* These are defined by the safe-syscall.inc.S file */ -extern char safe_syscall_start[]; -extern char safe_syscall_end[]; - -/* Adjust the signal context to rewind out of safe-syscall if we're in it = */ -static inline void rewind_if_in_safe_syscall(void *puc) -{ - ucontext_t *uc =3D puc; - unsigned long *pcreg =3D &uc->uc_mcontext.arm_pc; - - if (*pcreg > (uintptr_t)safe_syscall_start - && *pcreg < (uintptr_t)safe_syscall_end) { - *pcreg =3D (uintptr_t)safe_syscall_start; - } -} - -#endif /* __ASSEMBLER__ */ - #endif diff --git a/linux-user/host/i386/hostdep.h b/linux-user/host/i386/hostdep.h index 073be74d87..ce7136501f 100644 --- a/linux-user/host/i386/hostdep.h +++ b/linux-user/host/i386/hostdep.h @@ -15,24 +15,4 @@ /* We have a safe-syscall.inc.S */ #define HAVE_SAFE_SYSCALL =20 -#ifndef __ASSEMBLER__ - -/* These are defined by the safe-syscall.inc.S file */ -extern char safe_syscall_start[]; -extern char safe_syscall_end[]; - -/* Adjust the signal context to rewind out of safe-syscall if we're in it = */ -static inline void rewind_if_in_safe_syscall(void *puc) -{ - ucontext_t *uc =3D puc; - greg_t *pcreg =3D &uc->uc_mcontext.gregs[REG_EIP]; - - if (*pcreg > (uintptr_t)safe_syscall_start - && *pcreg < (uintptr_t)safe_syscall_end) { - *pcreg =3D (uintptr_t)safe_syscall_start; - } -} - -#endif /* __ASSEMBLER__ */ - #endif diff --git a/linux-user/host/ppc64/hostdep.h b/linux-user/host/ppc64/hostde= p.h index 98979ad917..0c290dd904 100644 --- a/linux-user/host/ppc64/hostdep.h +++ b/linux-user/host/ppc64/hostdep.h @@ -15,24 +15,4 @@ /* We have a safe-syscall.inc.S */ #define HAVE_SAFE_SYSCALL =20 -#ifndef __ASSEMBLER__ - -/* These are defined by the safe-syscall.inc.S file */ -extern char safe_syscall_start[]; -extern char safe_syscall_end[]; - -/* Adjust the signal context to rewind out of safe-syscall if we're in it = */ -static inline void rewind_if_in_safe_syscall(void *puc) -{ - ucontext_t *uc =3D puc; - unsigned long *pcreg =3D &uc->uc_mcontext.gp_regs[PT_NIP]; - - if (*pcreg > (uintptr_t)safe_syscall_start - && *pcreg < (uintptr_t)safe_syscall_end) { - *pcreg =3D (uintptr_t)safe_syscall_start; - } -} - -#endif /* __ASSEMBLER__ */ - #endif diff --git a/linux-user/host/riscv/hostdep.h b/linux-user/host/riscv/hostde= p.h index 2ba07456ae..7f67c22868 100644 --- a/linux-user/host/riscv/hostdep.h +++ b/linux-user/host/riscv/hostdep.h @@ -11,24 +11,4 @@ /* We have a safe-syscall.inc.S */ #define HAVE_SAFE_SYSCALL =20 -#ifndef __ASSEMBLER__ - -/* These are defined by the safe-syscall.inc.S file */ -extern char safe_syscall_start[]; -extern char safe_syscall_end[]; - -/* Adjust the signal context to rewind out of safe-syscall if we're in it = */ -static inline void rewind_if_in_safe_syscall(void *puc) -{ - ucontext_t *uc =3D puc; - unsigned long *pcreg =3D &uc->uc_mcontext.__gregs[REG_PC]; - - if (*pcreg > (uintptr_t)safe_syscall_start - && *pcreg < (uintptr_t)safe_syscall_end) { - *pcreg =3D (uintptr_t)safe_syscall_start; - } -} - -#endif /* __ASSEMBLER__ */ - #endif diff --git a/linux-user/host/s390x/hostdep.h b/linux-user/host/s390x/hostde= p.h index 4f0171f36f..d801145854 100644 --- a/linux-user/host/s390x/hostdep.h +++ b/linux-user/host/s390x/hostdep.h @@ -15,24 +15,4 @@ /* We have a safe-syscall.inc.S */ #define HAVE_SAFE_SYSCALL =20 -#ifndef __ASSEMBLER__ - -/* These are defined by the safe-syscall.inc.S file */ -extern char safe_syscall_start[]; -extern char safe_syscall_end[]; - -/* Adjust the signal context to rewind out of safe-syscall if we're in it = */ -static inline void rewind_if_in_safe_syscall(void *puc) -{ - ucontext_t *uc =3D puc; - unsigned long *pcreg =3D &uc->uc_mcontext.psw.addr; - - if (*pcreg > (uintptr_t)safe_syscall_start - && *pcreg < (uintptr_t)safe_syscall_end) { - *pcreg =3D (uintptr_t)safe_syscall_start; - } -} - -#endif /* __ASSEMBLER__ */ - #endif diff --git a/linux-user/host/x86_64/hostdep.h b/linux-user/host/x86_64/host= dep.h index a4fefb5114..9c62bd26bd 100644 --- a/linux-user/host/x86_64/hostdep.h +++ b/linux-user/host/x86_64/hostdep.h @@ -15,24 +15,4 @@ /* We have a safe-syscall.inc.S */ #define HAVE_SAFE_SYSCALL =20 -#ifndef __ASSEMBLER__ - -/* These are defined by the safe-syscall.inc.S file */ -extern char safe_syscall_start[]; -extern char safe_syscall_end[]; - -/* Adjust the signal context to rewind out of safe-syscall if we're in it = */ -static inline void rewind_if_in_safe_syscall(void *puc) -{ - ucontext_t *uc =3D puc; - greg_t *pcreg =3D &uc->uc_mcontext.gregs[REG_RIP]; - - if (*pcreg > (uintptr_t)safe_syscall_start - && *pcreg < (uintptr_t)safe_syscall_end) { - *pcreg =3D (uintptr_t)safe_syscall_start; - } -} - -#endif /* __ASSEMBLER__ */ - #endif diff --git a/linux-user/safe-syscall.h b/linux-user/safe-syscall.h index 6bc0390262..aaa9ffc0e2 100644 --- a/linux-user/safe-syscall.h +++ b/linux-user/safe-syscall.h @@ -127,6 +127,9 @@ #ifdef HAVE_SAFE_SYSCALL /* The core part of this function is implemented in assembly */ extern long safe_syscall_base(int *pending, long number, ...); +/* These are defined by the safe-syscall.inc.S file */ +extern char safe_syscall_start[]; +extern char safe_syscall_end[]; =20 #define safe_syscall(...) \ ({ \ diff --git a/linux-user/signal.c b/linux-user/signal.c index 81c45bfce9..6d5e5b698c 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -31,6 +31,7 @@ #include "trace.h" #include "signal-common.h" #include "host-signal.h" +#include "safe-syscall.h" =20 static struct target_sigaction sigact_table[TARGET_NSIG]; =20 @@ -793,12 +794,20 @@ int queue_signal(CPUArchState *env, int sig, int si_t= ype, return 1; /* indicates that the signal was queued */ } =20 -#ifndef HAVE_SAFE_SYSCALL + +/* Adjust the signal context to rewind out of safe-syscall if we're in it = */ static inline void rewind_if_in_safe_syscall(void *puc) { - /* Default version: never rewind */ -} +#ifdef HAVE_SAFE_SYSCALL + ucontext_t *uc =3D (ucontext_t *)puc; + uintptr_t pcreg =3D host_signal_pc(uc); + + if (pcreg > (uintptr_t)safe_syscall_start + && pcreg < (uintptr_t)safe_syscall_end) { + host_signal_set_pc(uc, (uintptr_t)safe_syscall_start); + } #endif +} =20 static void host_signal_handler(int host_sig, siginfo_t *info, void *puc) { --=20 2.25.1