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[98.147.7.212]) by smtp.gmail.com with ESMTPSA id z26-20020aa785da000000b006e64ddfa71asm7654894pfn.170.2024.04.08.22.03.28 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 08 Apr 2024 22:03:29 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; t=1712639010; x=1713243810; 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=ywDEWaMPHCkZHNZHZvDhBEB+D4W5S61RGKLaVoHCr7o=; b=CF2bkEmh2up95Lwedu0z6rIg10INFCUnGDgZL3GsGZWRYwjkgpHbfrgDKoCfih+RWX 9PCNICrWKyrWp0hH34ENm0rjQmSJWU6TrEOg9lmlQXP2E2Wj2BH5+V9U4+r4v5ViEWp9 3GsBhO9/g1Ac9d0MgsSVE5dC27Or33Ep5ikHBlq/22/Ij8uRz268CtISFIzG0nEgIA/J 0GtNmk91oOEloPjiaCPdKQaNB/VcM0z6BlCRhVzzJzPFFniu+ajuUECkCLrjEiLW1Ef4 f3wvh2cbzm/S3/Alnn+zR85XFO0P0FHqtVuRPvNjgT9JU5nCy3ckDetA3VbDjQHGC/bt XZhQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1712639010; x=1713243810; 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=ywDEWaMPHCkZHNZHZvDhBEB+D4W5S61RGKLaVoHCr7o=; b=MkffxL8TLAny2bxAGFG1dy1dhTj3PVmUSt9TX9m7uB7H5ZAfzhN+ywk+0iBGteX1GB bc5GXp2y2bSnuE9u2rd2VhcGouqIkgUrALKM9xA0S+xmX1FJcp+eAC9qb011T5Q2LO/P Igo/gde08inzNyV0c5vicLMqM6PIiSOhzmgBRuR/3tcgJra1k6SMemmftUW8M0DI02JS yftsGE0Ob+/N8BzSeW+ncjwV4lHbFYAB8ep51g3wvNaOqlU/TKz1eQikCw08Nd/u/pYE KTkNcijUimSw4388zeW/s2cMPTZyYZxhsXRpfuqNdyIc9E1l4vZc+cAFDaHvc7DILHGR vDMg== X-Gm-Message-State: AOJu0YzR3csnmsZJY7tsDZVzHXoxdybo7xI2DxsBbs1SjslZRtZRX2Jh x1lE+E647jZJV83kSghkqyegD47qvFOwRi/6k+2fzZUcGeCTk1GIzRcd/OghLI1/PBk5IsrVuJ3 c X-Google-Smtp-Source: AGHT+IFahfqIH6bHTJ8goWtmwgDDYAW8DEothdAseTbCofPfg0zpqv+K7mJVdB0ExThwkwKps58RTw== X-Received: by 2002:a05:6a00:852:b0:6ec:f28b:659f with SMTP id q18-20020a056a00085200b006ecf28b659fmr14320620pfk.3.1712639009803; Mon, 08 Apr 2024 22:03:29 -0700 (PDT) From: Richard Henderson To: qemu-devel@nongnu.org Subject: [PATCH v2 20/28] linux-user/i386: Return boolean success from restore_sigcontext Date: Mon, 8 Apr 2024 19:02:54 -1000 Message-Id: <20240409050302.1523277-21-richard.henderson@linaro.org> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20240409050302.1523277-1-richard.henderson@linaro.org> References: <20240409050302.1523277-1-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 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: 1712639209761100001 Content-Type: text/plain; charset="utf-8" Invert the sense of the return value and use bool. 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 f8cc0cff07..1571ff8553 100644 --- a/linux-user/i386/signal.c +++ b/linux-user/i386/signal.c @@ -563,12 +563,12 @@ 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)); @@ -616,29 +616,27 @@ 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 */ @@ -664,8 +662,9 @@ 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 @@ -689,7 +688,7 @@ 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