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2024-02-09gdbstub: Add syscall entry/return hooksIlya Leoshkevich1-0/+13
The upcoming syscall catchpoint support needs to get control on syscall entry and return. Provide the necessary hooks for that, which are no-ops for now. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20240202152506.279476-4-iii@linux.ibm.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240207163812.3231697-13-alex.bennee@linaro.org>
2024-02-09gdbstub: Allow specifying a reason in stop packetsIlya Leoshkevich1-2/+14
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 <iii@linux.ibm.com> Message-Id: <20240202152506.279476-3-iii@linux.ibm.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240207163812.3231697-12-alex.bennee@linaro.org>
2023-10-12gdbstub: replace exit calls with proper shutdown for softmmuClément Chigot1-0/+9
This replaces the exit calls by shutdown requests, ensuring a proper cleanup of Qemu. Features like net/vhost-vdpa.c are expecting qemu_cleanup to be called to remove their last residuals. Signed-off-by: Clément Chigot <chigot@adacore.com> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-ID: <20231003071427.188697-6-chigot@adacore.com> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2023-03-07gdbstub: Remove gdb_do_syscallvRichard Henderson1-11/+0
This function is unused, except to implement gdb_do_syscall. Fold the implementations together. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230303025805.625589-27-richard.henderson@linaro.org>
2023-03-07gdbstub: move syscall handling to new fileAlex Bennée1-0/+124
Our GDB syscall support is the last chunk of code that needs target specific support so move it to a new file. We take the opportunity to move the syscall state into its own singleton instance and add in a few helpers for the main gdbstub to interact with the module. I also moved the gdb_exit() declaration into syscalls.h as it feels pretty related and most of the callers of it treat it as such. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230302190846.2593720-22-alex.bennee@linaro.org> Message-Id: <20230303025805.625589-22-richard.henderson@linaro.org>
2023-03-07gdbstub: move register helpers into standalone includeAlex Bennée1-0/+103
These inline helpers are all used by target specific code so move them out of the general header so we don't needlessly pollute the rest of the API with target specific stuff. Note we have to include cpu.h in semihosting as it was relying on a side effect before. Reviewed-by: Taylor Simpson <tsimpson@quicinc.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230302190846.2593720-21-alex.bennee@linaro.org> Message-Id: <20230303025805.625589-21-richard.henderson@linaro.org>
2023-03-07gdbstub: move chunks of user code into own filesAlex Bennée1-0/+43
The process was pretty similar to the softmmu move except we take the time to split stuff between user.c and user-target.c to avoid as much target specific compilation as possible. We also start to make use of our shiny new header scheme so the user-only helpers can be included without the rest of the exec/gsbstub.h cruft. As before we split some functions into user and softmmu versions Reviewed-by: Fabiano Rosas <farosas@suse.de> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20230302190846.2593720-12-alex.bennee@linaro.org> Message-Id: <20230303025805.625589-12-richard.henderson@linaro.org>