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gdbstub: move syscall handling to new file

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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>
This commit is contained in:
Alex Bennée 2023-03-02 18:57:57 -08:00
parent 4ea5fe997d
commit c566080cd3
17 changed files with 387 additions and 288 deletions
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8
gdbstub/internals.h
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@ -61,8 +61,6 @@ typedef struct GDBState {
bool multiprocess;
GDBProcess *processes;
int process_num;
char syscall_buf[256];
gdb_syscall_complete_cb current_syscall_cb;
GString *str_buf;
GByteArray *mem_buf;
int sstep_flags;
@ -191,6 +189,12 @@ void gdb_handle_query_attached(GArray *params, void *user_ctx); /* both */
void gdb_handle_query_qemu_phy_mem_mode(GArray *params, void *user_ctx);
void gdb_handle_set_qemu_phy_mem_mode(GArray *params, void *user_ctx);
/* sycall handling */
void gdb_handle_file_io(GArray *params, void *user_ctx);
bool gdb_handled_syscall(void);
void gdb_disable_syscalls(void);
void gdb_syscall_reset(void);
/*
* Break/Watch point support - there is an implementation for softmmu
* and user mode.