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[71.237.47.177]) by smtp.gmail.com with ESMTPSA id a15-20020a056e02120f00b00313b281ecd2sm3104314ilq.70.2023.04.10.11.21.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Apr 2023 11:21:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=bsdimp-com.20210112.gappssmtp.com; s=20210112; t=1681150879; 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=j6xfwtkUnMMc9RuZ0yputW7S+NamT6FMav/Lxfc/8zI=; b=2wOLXIEMD9M4InDSizyfpjzYQ4mcJ/M5j4hDVWyh6d2XLMDSsIRZPjJ3+8yzx/pBC9 370KYilvb9kqghtBena6uPr9sn7sTysKYzpD5xfRJLyK+n3zyamU7SWyCb5HZkiiGgCa W85hnlP4CdXJkpWyRMbtjHpCr9TI/CHXqbN4FL23+V7AU8x0u4J0pMk+Atn8jn7IgDaF kdwequfNiHvg7TVn8xumdIK/eU5wvPQVVwgEMX4QpFbyVioLePyqZE6fJVNgs/dWHQnz TIb0NhfPjDiN+z9jOaYBRH4v6swCwgRnfib4rYPMfwFyoGY8JKtRgopPjEMZmeClDPh+ LgFA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1681150879; 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=j6xfwtkUnMMc9RuZ0yputW7S+NamT6FMav/Lxfc/8zI=; b=5T7+hbnhCeeFe0bLwDukuGX644GvCyglcUiDjMZMb+Ox85wJ2oG7DXwFzfQPIGKx9z LPj3nnNoup5Wyxt6tp+d0bie+805lBaiPLv+gDfrtweTlIW3ITADCGrhlgxGM/9NC0KY 1w98/Jh5n60ff9C762efFq2CDIZ+VoeVpx6mNAN35eg+2Pxr+SIGHW07j4SEKHQslcGo w69atOOe+U9/66Q9gJCeWhb2BnLX5Hrbt4/lEf+6PoXptLmP9PrZrCs9fqf2kxUyx+8o Q0v0hi6ZKtFXlX9PipCmwbeXaUga5mklSAUzTM5z+vEkJ8a3/5xsOgPffAU3dPZgqCIW 8tbQ== X-Gm-Message-State: AAQBX9cQaFe/S97oob3BNQEtDRxPST43HJYXOaVR1cQhz7FBeWXFt7ZM jmPiSFoG3AAH+WdYIgTwwlG7UddlTorqgJveOd8= X-Google-Smtp-Source: AKy350aYAvMb3EiL5+itcU/BlczzuC/i0Eas4pdtkiCugLZs8WGVhhfZkI7/5eLzDO/3KWsbCJpFsA== X-Received: by 2002:a05:6e02:683:b0:328:7544:b1bf with SMTP id o3-20020a056e02068300b003287544b1bfmr4696584ils.23.1681150879661; Mon, 10 Apr 2023 11:21:19 -0700 (PDT) From: Warner Losh To: qemu-devel@nongnu.org Cc: jrtc27@jrtc27.com, riastradh@netbsd.org, Kyle Evans , Ryo ONODERA , Brad Smith , Warner Losh , reinoud@netbsd.org, Richard Henderson Subject: [PATCH v2 16/19] bsd-user: Implement SIGSYS on arm Date: Mon, 10 Apr 2023 12:20:53 -0600 Message-Id: <20230410182056.320-17-imp@bsdimp.com> X-Mailer: git-send-email 2.40.0 In-Reply-To: <20230410182056.320-1-imp@bsdimp.com> References: <20230410182056.320-1-imp@bsdimp.com> 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: none client-ip=2607:f8b0:4864:20::12b; envelope-from=imp@bsdimp.com; helo=mail-il1-x12b.google.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_NONE=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 @bsdimp-com.20210112.gappssmtp.com) X-ZM-MESSAGEID: 1681151031750100003 Content-Type: text/plain; charset="utf-8" When a system call returns ENOSYS, send a SIGSYS to the process (to generate a core dump). Signed-off-by: Warner Losh Reviewed-by: Richard Henderson --- bsd-user/arm/target_arch_cpu.h | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/bsd-user/arm/target_arch_cpu.h b/bsd-user/arm/target_arch_cpu.h index 517d0087644..c4b21fef713 100644 --- a/bsd-user/arm/target_arch_cpu.h +++ b/bsd-user/arm/target_arch_cpu.h @@ -127,6 +127,14 @@ static inline void target_cpu_loop(CPUARMState *env) env->regs[15] -=3D env->thumb ? 2 : 4; break; } + /* + * Emulate BSD's sigsys behavior on unimplemented system c= alls. + * XXX may need to gate this somehow or arrange for sigsys= to be + * masked in some use cases. + */ + if (ret =3D=3D -TARGET_ENOSYS) { + force_sig_fault(TARGET_SIGSYS, SI_KERNEL, env->regs[15= ]); + } if ((unsigned int)ret >=3D (unsigned int)(-515)) { ret =3D -ret; cpsr_write(env, CPSR_C, CPSR_C, CPSRWriteByInstr); --=20 2.40.0