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[2001:44b8:2176:c800:855d:172:a1c2:6464]) by smtp.gmail.com with ESMTPSA id u8-20020a1709026e0800b0017bb38e4588sm8158784plk.135.2022.11.08.23.02.30 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Nov 2022 23:02:32 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; 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=FPCwCw8NIdnDIzeLfwT3RMHDD1OYAbg9lFHMIclkLr0=; b=S0IX/GQz57Ov1GzWNEM1mP4DgoxQx2b/+8j0COusPABm9qwM7d56ZXpKI7cYjCuPRt L6p+MKguGJ2IBUiWtsO1TXfxuH24MrRrKnDyF0Wacs5h9P+N6yazZjuJlw7lUSqRTh+B MtxduwFMygtY1WqSFjYgaepVNCqfHEVb4UHvjadTru1MHlD5usUXFM8puyptI96z6Eoh 786BHYnRFXSmbj3cfq1UgWDKbgBODEnEYciY9qy1Bc7bZjckr9nhGuVV+jtJfaZe5EUN WqWpF+jTSJhMAjNNieH2XeygSu0vaoVvUv6Lq+FGu+8jzu3y3UG+ExNh/aHF26JY1+j8 h4Bg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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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charset="utf-8" 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::1034; envelope-from=richard.henderson@linaro.org; helo=mail-pj1-x1034.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 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: 1667977396931100001 Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson --- accel/tcg/translate-all.c | 10 ---------- tcg/tcg.c | 12 ++++++++++++ 2 files changed, 12 insertions(+), 10 deletions(-) diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 921944a5ab..9ee21f7f52 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -821,16 +821,6 @@ TranslationBlock *tb_gen_code(CPUState *cpu, trace_translate_block(tb, pc, tb->tc.ptr); =20 /* generate machine code */ - tb->jmp_reset_offset[0] =3D TB_JMP_RESET_OFFSET_INVALID; - tb->jmp_reset_offset[1] =3D TB_JMP_RESET_OFFSET_INVALID; - tcg_ctx->tb_jmp_reset_offset =3D tb->jmp_reset_offset; - if (TCG_TARGET_HAS_direct_jump) { - tcg_ctx->tb_jmp_insn_offset =3D tb->jmp_target_arg; - tcg_ctx->tb_jmp_target_addr =3D NULL; - } else { - tcg_ctx->tb_jmp_insn_offset =3D NULL; - tcg_ctx->tb_jmp_target_addr =3D tb->jmp_target_arg; - } =20 #ifdef CONFIG_PROFILER qatomic_set(&prof->tb_count, prof->tb_count + 1); diff --git a/tcg/tcg.c b/tcg/tcg.c index b43b6a7981..436fcf6ebd 100644 --- a/tcg/tcg.c +++ b/tcg/tcg.c @@ -4228,6 +4228,18 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb= , target_ulong pc_start) } #endif =20 + /* Initialize goto_tb jump offsets. */ + tb->jmp_reset_offset[0] =3D TB_JMP_RESET_OFFSET_INVALID; + tb->jmp_reset_offset[1] =3D TB_JMP_RESET_OFFSET_INVALID; + tcg_ctx->tb_jmp_reset_offset =3D tb->jmp_reset_offset; + if (TCG_TARGET_HAS_direct_jump) { + tcg_ctx->tb_jmp_insn_offset =3D tb->jmp_target_arg; + tcg_ctx->tb_jmp_target_addr =3D NULL; + } else { + tcg_ctx->tb_jmp_insn_offset =3D NULL; + tcg_ctx->tb_jmp_target_addr =3D tb->jmp_target_arg; + } + tcg_reg_alloc_start(s); =20 /* --=20 2.34.1 From nobody Wed Apr 16 13:12:32 2025 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=1667977399; cv=none; d=zohomail.com; s=zohoarc; b=XApA06Zilc9T6ptnQJc6/XUgDD7a1i7QGZX8mYrzVaLMoFaXjrakfhGSoE99uoacFgxOTo9+/MUqYV2JlEzhuxFraDsb3n/h4+pHDOBwCfGz0hCxbXCiPy5dPFEpErfyL27w8SzbAbJe2mORCMwtkj5at5xYreKUfEsyaMARxC8= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1667977399; h=Content-Type:Content-Transfer-Encoding:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; 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[2001:44b8:2176:c800:855d:172:a1c2:6464]) by smtp.gmail.com with ESMTPSA id u8-20020a1709026e0800b0017bb38e4588sm8158784plk.135.2022.11.08.23.02.33 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Nov 2022 23:02:35 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; 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=ThIdcirnoAwmtpHe6z2EOBTDBtvtEBFVSHhE8OUgyu8=; b=Ow0xfLJfL90/9TbbZPCMtPERZ8oFIdNJVjK96Y60n2Fgbr8Z06YMjdPWEvTEngFlHx HeD7aUdQYYo3L2SS2GkQAAf1CjRo6uwW8Jmbso0Tbiy/TyfZr+q6VPIj31yal57spYpj I9CohZcKZKCqFLLMOXLKP7oi65pYD0UwTDBZ+iVxg8XKXFXmNQo95KB34P7uy7yZVVjq ghE/HVT6cYDMi7eajJJxJkNlsD2q90EXC9JhaBNfr8bd05JFWVekvp/EjtVuvJtOHRJ/ cOVDXhDlqkxoVXA7Fhd5p03zpVWG2RUxdfJoVt8phXwzaqzabz/6szziLrxmqlAj/yrj tJiw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; 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=ThIdcirnoAwmtpHe6z2EOBTDBtvtEBFVSHhE8OUgyu8=; b=LltTD2KnBJ3HvP7EodfbFSvM9sM1+NDJG2grRmTlLBbdR6dvtqU3gKWLS0UX7gWynX 54NBxbs37iM+nKVFrySEU3np79k3oJQ4mNUiQ5NAElkhC+iRo6gcI3/LWrklL5JFu18D YapVxjEL1mtMaDUmIVIG6PaixE4vQn0xcgNqVnvRMQ4PXbfJcJ2oxma3wux5yivCjj9i LL5qpd5J6rWUV/aIzaj+UBHUwVKaSLHuHDRSmauLkzsmO405z3l+HSvVVAQN/bqflBU3 /vaX71rPzfGljSZCSq0dJvzKepejLPYyQzBiqxF5E/TWy918h4wHSgKai/47HwRy9dJK z5dQ== X-Gm-Message-State: ACrzQf0Xs53MJD3PV93LIhg2tVcLR0vhYbPrmXlkUmjJf+9MpR0EX8vm Yd0PbsbbToijbvcqXrNisls6ccZKqlMQ6IlgBB0= X-Google-Smtp-Source: AMsMyM72Rb58SD8/qwPCetl3wA1A6XxEft6fzT1W6T4omSKCSDRDpriOsT4Dlalg12K2kAHIZYazyw== X-Received: by 2002:a05:6a00:14cf:b0:56d:88a8:32cf with SMTP id w15-20020a056a0014cf00b0056d88a832cfmr47989904pfu.27.1667977355887; Tue, 08 Nov 2022 23:02:35 -0800 (PST) From: Richard Henderson To: qemu-devel@nongnu.org Cc: stefanha@redhat.com, =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PULL 2/2] accel/tcg: Split out setjmp_gen_code Date: Wed, 9 Nov 2022 18:02:24 +1100 Message-Id: <20221109070224.13073-3-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20221109070224.13073-1-richard.henderson@linaro.org> References: <20221109070224.13073-1-richard.henderson@linaro.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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::536; envelope-from=richard.henderson@linaro.org; helo=mail-pg1-x536.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 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: 1667977400910100001 Isolate the code protected by setjmp. Fixes: translate-all.c: In function =E2=80=98tb_gen_code=E2=80=99: translate-all.c:748:51: error: argument =E2=80=98cflags=E2=80=99 might be c= lobbered by =E2=80=98longjmp=E2=80=99 or =E2=80=98vfork=E2=80=99 [-Werror= =3Dclobbered] Reviewed-by: Philippe Mathieu-Daud=C3=A9 Signed-off-by: Richard Henderson --- accel/tcg/translate-all.c | 58 ++++++++++++++++++++++----------------- 1 file changed, 33 insertions(+), 25 deletions(-) diff --git a/accel/tcg/translate-all.c b/accel/tcg/translate-all.c index 9ee21f7f52..ac3ee3740c 100644 --- a/accel/tcg/translate-all.c +++ b/accel/tcg/translate-all.c @@ -742,6 +742,37 @@ void page_collection_unlock(struct page_collection *se= t) =20 #endif /* !CONFIG_USER_ONLY */ =20 +/* + * Isolate the portion of code gen which can setjmp/longjmp. + * Return the size of the generated code, or negative on error. + */ +static int setjmp_gen_code(CPUArchState *env, TranslationBlock *tb, + target_ulong pc, void *host_pc, + int *max_insns, int64_t *ti) +{ + int ret =3D sigsetjmp(tcg_ctx->jmp_trans, 0); + if (unlikely(ret !=3D 0)) { + return ret; + } + + tcg_func_start(tcg_ctx); + + tcg_ctx->cpu =3D env_cpu(env); + gen_intermediate_code(env_cpu(env), tb, *max_insns, pc, host_pc); + assert(tb->size !=3D 0); + tcg_ctx->cpu =3D NULL; + *max_insns =3D tb->icount; + +#ifdef CONFIG_PROFILER + qatomic_set(&tcg_ctx->prof.tb_count, tcg_ctx->prof.tb_count + 1); + qatomic_set(&tcg_ctx->prof.interm_time, + tcg_ctx->prof.interm_time + profile_getclock() - *ti); + *ti =3D profile_getclock(); +#endif + + return tcg_gen_code(tcg_ctx, tb, pc); +} + /* Called with mmap_lock held for user mode emulation. */ TranslationBlock *tb_gen_code(CPUState *cpu, target_ulong pc, target_ulong cs_base, @@ -754,8 +785,8 @@ TranslationBlock *tb_gen_code(CPUState *cpu, int gen_code_size, search_size, max_insns; #ifdef CONFIG_PROFILER TCGProfile *prof =3D &tcg_ctx->prof; - int64_t ti; #endif + int64_t ti; void *host_pc; =20 assert_memory_lock(); @@ -805,33 +836,10 @@ TranslationBlock *tb_gen_code(CPUState *cpu, ti =3D profile_getclock(); #endif =20 - gen_code_size =3D sigsetjmp(tcg_ctx->jmp_trans, 0); - if (unlikely(gen_code_size !=3D 0)) { - goto error_return; - } - - tcg_func_start(tcg_ctx); - - tcg_ctx->cpu =3D env_cpu(env); - gen_intermediate_code(cpu, tb, max_insns, pc, host_pc); - assert(tb->size !=3D 0); - tcg_ctx->cpu =3D NULL; - max_insns =3D tb->icount; - trace_translate_block(tb, pc, tb->tc.ptr); =20 - /* generate machine code */ - -#ifdef CONFIG_PROFILER - qatomic_set(&prof->tb_count, prof->tb_count + 1); - qatomic_set(&prof->interm_time, - prof->interm_time + profile_getclock() - ti); - ti =3D profile_getclock(); -#endif - - gen_code_size =3D tcg_gen_code(tcg_ctx, tb, pc); + gen_code_size =3D setjmp_gen_code(env, tb, pc, host_pc, &max_insns, &t= i); if (unlikely(gen_code_size < 0)) { - error_return: switch (gen_code_size) { case -1: /* --=20 2.34.1