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Fri, 2 Feb 2024 15:25:09 +0000 (GMT) From: Ilya Leoshkevich To: =?utf-8?q?Alex_Benn=C3=A9e?= , Riku Voipio Cc: =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , qemu-devel@nongnu.org, Ilya Leoshkevich Subject: [PATCH v3 2/5] gdbstub: Allow specifying a reason in stop packets Date: Fri, 2 Feb 2024 16:23:44 +0100 Message-ID: <20240202152506.279476-3-iii@linux.ibm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240202152506.279476-1-iii@linux.ibm.com> References: <20240202152506.279476-1-iii@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-ORIG-GUID: uXGxla2ctzSmeEFBTXwHmj-__wYHnX6B X-Proofpoint-GUID: uXGxla2ctzSmeEFBTXwHmj-__wYHnX6B X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.272,Aquarius:18.0.1011,Hydra:6.0.619,FMLib:17.11.176.26 definitions=2024-02-02_08,2024-01-31_01,2023-05-22_02 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 phishscore=0 mlxscore=0 suspectscore=0 adultscore=0 lowpriorityscore=0 spamscore=0 priorityscore=1501 malwarescore=0 impostorscore=0 mlxlogscore=552 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2311290000 definitions=main-2402020112 Received-SPF: pass client-ip=148.163.158.5; envelope-from=iii@linux.ibm.com; helo=mx0b-001b2d01.pphosted.com X-Spam_score_int: -19 X-Spam_score: -2.0 X-Spam_bar: -- X-Spam_report: (-2.0 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org The upcoming syscall catchpoint support needs to send stop packets with an associated reason to GDB. Add an extra parameter to gdb_handlesig() for that, and rename it to gdb_handlesig_reason(). Provide a compatibility wrapper with an old name. Signed-off-by: Ilya Leoshkevich --- gdbstub/user.c | 5 ++++- include/gdbstub/user.h | 16 ++++++++++++++-- 2 files changed, 18 insertions(+), 3 deletions(-) diff --git a/gdbstub/user.c b/gdbstub/user.c index dbe1d9b8875..63edca131ab 100644 --- a/gdbstub/user.c +++ b/gdbstub/user.c @@ -121,7 +121,7 @@ void gdb_qemu_exit(int code) exit(code); } -int gdb_handlesig(CPUState *cpu, int sig) +int gdb_handlesig_reason(CPUState *cpu, int sig, const char *reason) { char buf[256]; int n; @@ -141,6 +141,9 @@ int gdb_handlesig(CPUState *cpu, int sig) "T%02xthread:", gdb_target_signal_to_gdb(sig)); gdb_append_thread_id(cpu, gdbserver_state.str_buf); g_string_append_c(gdbserver_state.str_buf, ';'); + if (reason) { + g_string_append(gdbserver_state.str_buf, reason); + } gdb_put_strbuf(); gdbserver_state.allow_stop_reply = false; } diff --git a/include/gdbstub/user.h b/include/gdbstub/user.h index d392e510c59..1fc43e04af5 100644 --- a/include/gdbstub/user.h +++ b/include/gdbstub/user.h @@ -10,9 +10,10 @@ #define GDBSTUB_USER_H /** - * gdb_handlesig() - yield control to gdb + * gdb_handlesig_reason() - yield control to gdb * @cpu: CPU * @sig: if non-zero, the signal number which caused us to stop + * @reason: stop reason for stop reply packet or NULL * * This function yields control to gdb, when a user-mode-only target * needs to stop execution. If @sig is non-zero, then we will send a @@ -24,7 +25,18 @@ * or 0 if no signal should be delivered, ie the signal that caused * us to stop should be ignored. */ -int gdb_handlesig(CPUState *, int); +int gdb_handlesig_reason(CPUState *, int, const char *); + +/** + * gdb_handlesig() - yield control to gdb + * @cpu CPU + * @sig: if non-zero, the signal number which caused us to stop + * @see gdb_handlesig_reason() + */ +static inline int gdb_handlesig(CPUState *cpu, int sig) +{ + return gdb_handlesig_reason(cpu, sig, NULL); +} /** * gdb_signalled() - inform remote gdb of sig exit