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2024-04-26gdbstub: Avoid including 'cpu.h' in 'gdbstub/helpers.h'Philippe Mathieu-Daudé
We only need the "exec/tswap.h" and "cpu-param.h" headers. Only include "cpu.h" in the target gdbstub.c source files. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240418192525.97451-20-philmd@linaro.org>
2024-04-26gdbstub: Simplify #ifdef'ry in helpers.hPhilippe Mathieu-Daudé
Slightly simplify by checking NEED_CPU_H definition in header. Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240322161439.6448-2-philmd@linaro.org>
2024-04-26exec: Rename NEED_CPU_H -> COMPILING_PER_TARGETPhilippe Mathieu-Daudé
'NEED_CPU_H' guard target-specific code; it is defined by meson altogether with the 'CONFIG_TARGET' definition. Rename NEED_CPU_H as COMPILING_PER_TARGET to clarify its meaning. Mechanical change running: $ sed -i s/NEED_CPU_H/COMPILING_PER_TARGET/g $(git grep -l NEED_CPU_H) then manually add a /* COMPILING_PER_TARGET */ comment after the '#endif' when the block is large. Inspired-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240322161439.6448-4-philmd@linaro.org>
2024-03-13gdbstub: Save target's siginfoGustavo Romero
Save target's siginfo into gdbserver_state so it can be used later, for example, in any stub that requires the target's si_signo and si_code. This change affects only linux-user mode. Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org> Suggested-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240309030901.1726211-4-gustavo.romero@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2024-03-13gdbstub: Rename back gdb_handlesigGustavo Romero
Rename gdb_handlesig_reason back to gdb_handlesig. There is no need to add a wrapper for gdb_handlesig and rename it when a new parameter is added. Signed-off-by: Gustavo Romero <gustavo.romero@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20240309030901.1726211-2-gustavo.romero@linaro.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2024-03-06gdbstub: Call gdbserver_fork() both in parent and in childIlya Leoshkevich
The upcoming follow-fork-mode child support requires post-fork message exchange between the parent and the child. Prepare gdbserver_fork() for this purpose. Rename it to gdbserver_fork_end() to better reflect its purpose. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20240219141628.246823-8-iii@linux.ibm.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240305121005.3528075-9-alex.bennee@linaro.org>
2024-03-06{linux,bsd}-user: Pass pid to gdbserver_fork()Ilya Leoshkevich
The upcoming follow-fork-mode child support requires knowing the child pid. Pass it down. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20240219141628.246823-7-iii@linux.ibm.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240305121005.3528075-8-alex.bennee@linaro.org>
2024-03-06gdbstub: Introduce gdbserver_fork_start()Ilya Leoshkevich
The upcoming follow-fork-mode child support requires knowing when fork() is about to happen in order to initialize its state. Add a hook for that. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20240219141628.246823-5-iii@linux.ibm.com> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20240305121005.3528075-6-alex.bennee@linaro.org>
2024-02-09gdbstub: Add syscall entry/return hooksIlya Leoshkevich
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 Leoshkevich
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 Chigot
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 Henderson
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 Bennée
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 Bennée
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 Bennée
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>
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