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[88.187.86.199]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-4a178c49c35sm154948755e9.9.2026.10.07.02.45.24 (version=TLS1_3 cipher=TLS_CHACHA20_POLY1305_SHA256 bits=256/256); Wed, 07 Oct 2026 02:45:25 -0700 (PDT) From: =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= To: qemu-devel@nongnu.org Cc: Richard Henderson , Paolo Bonzini , Peter Maydell , =?UTF-8?q?Philippe=20Mathieu-Daud=C3=A9?= Subject: [PATCH 01/27] cpus: Add helper to log raised exceptions with '-d int' Date: Wed, 7 Oct 2026 11:44:49 +0200 Message-ID: <20261007094516.75732-2-philmd@oss.qualcomm.com> X-Mailer: git-send-email 2.55.0 In-Reply-To: <20261007094516.75732-1-philmd@oss.qualcomm.com> References: <20261007094516.75732-1-philmd@oss.qualcomm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Proofpoint-GUID: CTyYdRV66YaK8F3nESCm7CIxexZ4eZ6E X-Authority-Analysis: v=2.4 cv=ZZiIpcVA c=1 sm=1 tr=0 ts=6ac614b8 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=4s3hRJSeHn4rkQlkrse1kQ==:17 a=IkcTkHD0fZMA:10 a=660iZSQnnn4A:10 a=M51BFTxLslgA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=yOCtJkima9RkubShWh1s:22 a=EUspDBNiAAAA:8 a=0xCBr3yVtZFRf-pbA1IA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-Spam-Info: AW1haW4tMjYxMDA3MDAzOCBTYWx0ZWRfX7RG4MN6bEsQ1 u0iBxiAQ1A01tcd5+pjjBoPn/audvr+A54OVW/isuZi+/LCXuAYs9D4nPdKmujDgqIEscleeNfq J9xpmsfGMDbvnmeIcpXvp9ePO8F52+w= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYxMDA3MDAzOCBTYWx0ZWRfXyswLwAdOJJc6 U+vMo7O+WGFi2vuY4pzGkI/qQCVYVboF7zmWHt62D4GIvAyTGZ18O9xkBJaTEWQ4T3IoaKrhUNT L4r8bOs5hHkmgVVEIB2UAQJtuoU+4vZidcCerItxq8Uh5XbFj9tIsDPUeNFmxubZ8x/R66GcmVp bXWKITPehJhggqihnIYquGp3I1f3M9pHQyLvqRgTMSZO5oqCgFVMtvMqvONsN/0wUHETyoqL57w Wx8WggwxA+TENaLpVEKTWcthcI8uV+Ym/hiN68j3Ableq+O2xy7GPpchEieqC16QawQGWICqF0T NjomcKOI03Fhoz4R72ZYJpN+5zJNPzAON8uVEhgMe7qi5WQDTqaLmIjFcIZCG+g+92V98cBnzOJ o6EIdYpdoGeupubeLZTjaIuSWjjwyuM+aQCtvgvRLTRdE8mnB2EGwqBJLk1rGA6s3hNP/5a4jeI WzxsGMWp74f5A1Ek/+Q== X-Proofpoint-ORIG-GUID: CTyYdRV66YaK8F3nESCm7CIxexZ4eZ6E X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1176,Hydra:6.1.134,FMLib:17.12.100.49 definitions=2026-10-07_03,2026-10-06_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 spamscore=0 priorityscore=1501 impostorscore=0 bulkscore=0 phishscore=0 lowpriorityscore=0 suspectscore=0 clxscore=1015 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2609040000 definitions=main-2610070038 Received-SPF: pass client-ip=205.220.168.131; envelope-from=philmd@oss.qualcomm.com; helo=mx0a-0031df01.pphosted.com X-Spam_score_int: -27 X-Spam_score: -2.8 X-Spam_bar: -- X-Spam_report: (-2.8 / 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_LOW=-0.7, 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: qemu development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Add log_raise_exception(), a common helper cpu_loop_*() can call to log a raised exception when '-d int' is used, and qemu_excp_name() to resolve QEMU-internal exceptions to names. Use it in cpu_loop_exit_atomic() to log the EXCP_ATOMIC reason. Signed-off-by: Philippe Mathieu-Daudé --- accel/tcg/cpu-exec-common.c | 32 ++++++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) diff --git a/accel/tcg/cpu-exec-common.c b/accel/tcg/cpu-exec-common.c index 68077c8fd9d..2ac8380d0bb 100644 --- a/accel/tcg/cpu-exec-common.c +++ b/accel/tcg/cpu-exec-common.c @@ -89,6 +89,37 @@ void tcg_update_all_cflags(void) } } +#define EXCP_QEMU_INTERNAL 0x10000 + +static const char *qemu_excp_name(int excp) +{ + static const char *excp_name[] = { + [EXCP_INTERRUPT - EXCP_QEMU_INTERNAL] = "async interruption", + [EXCP_HLT - EXCP_QEMU_INTERNAL] = "hlt instruction", + [EXCP_DEBUG - EXCP_QEMU_INTERNAL] = "debug", + [EXCP_HALTED - EXCP_QEMU_INTERNAL] = "halted", + [EXCP_YIELD - EXCP_QEMU_INTERNAL] = "yield", + [EXCP_ATOMIC - EXCP_QEMU_INTERNAL] = "emulate atomic", + }; + assert(excp >= EXCP_QEMU_INTERNAL); + excp -= EXCP_QEMU_INTERNAL; + if ((excp < ARRAY_SIZE(excp_name)) && excp_name[excp]) { + return excp_name[excp]; + } + return "undocumented"; +} + +static void log_raise_exception(const CPUState *cpu, int excp) +{ + if (!qemu_loglevel_mask(CPU_LOG_INT)) { + return; + } + if (excp >= EXCP_QEMU_INTERNAL) { + qemu_log_mask(CPU_LOG_INT, "raise exception: 0x%x (internal: %s)\n", + excp, qemu_excp_name(excp)); + } +} + /* exit the current TB, but without causing any exception to be raised */ void cpu_loop_exit_noexc(CPUState *cpu) { @@ -118,5 +149,6 @@ void cpu_loop_exit_atomic(CPUState *cpu, uintptr_t pc) /* Prevent looping if already executing in a serial context. */ g_assert(!cpu_in_serial_context(cpu)); cpu->exception_index = EXCP_ATOMIC; + log_raise_exception(cpu, EXCP_ATOMIC); cpu_loop_exit_restore(cpu, pc); } -- 2.55.0