qemu/include/gdbstub/user.h
Gustavo Romero f84e313e02 gdbstub: Save target's siginfo
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>
2024-03-13 11:43:52 +00:00

68 lines
1.9 KiB
C

/*
* gdbstub user-mode only APIs
*
* Copyright (c) 2022 Linaro Ltd
*
* SPDX-License-Identifier: LGPL-2.0+
*/
#ifndef GDBSTUB_USER_H
#define GDBSTUB_USER_H
#define MAX_SIGINFO_LENGTH 128
/**
* gdb_handlesig() - 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
* @siginfo: target-specific siginfo struct
* @siginfo_len: target-specific siginfo struct length
*
* 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
* stop packet to tell gdb that we have stopped because of this signal.
*
* This function will block (handling protocol requests from gdb)
* until gdb tells us to continue target execution. When it does
* return, the return value is a signal to deliver to the target,
* or 0 if no signal should be delivered, ie the signal that caused
* us to stop should be ignored.
*/
int gdb_handlesig(CPUState *, int, const char *, void *, int);
/**
* gdb_signalled() - inform remote gdb of sig exit
* @as: current CPUArchState
* @sig: signal number
*/
void gdb_signalled(CPUArchState *as, int sig);
/**
* gdbserver_fork_start() - inform gdb of the upcoming fork()
*/
void gdbserver_fork_start(void);
/**
* gdbserver_fork_end() - inform gdb of the completed fork()
* @cs: CPU
* @pid: 0 if in child process, -1 if fork failed, child process pid otherwise
*/
void gdbserver_fork_end(CPUState *cs, pid_t pid);
/**
* gdb_syscall_entry() - inform gdb of syscall entry and yield control to it
* @cs: CPU
* @num: syscall number
*/
void gdb_syscall_entry(CPUState *cs, int num);
/**
* gdb_syscall_entry() - inform gdb of syscall return and yield control to it
* @cs: CPU
* @num: syscall number
*/
void gdb_syscall_return(CPUState *cs, int num);
#endif /* GDBSTUB_USER_H */