mirror of
https://github.com/xemu-project/xemu.git
synced 2024-11-28 14:00:44 +00:00
2113aed687
Split the signal related prototypes into the existing header file signal-common.h, and include it in those places that now require it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210908154405.15417-4-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
87 lines
3.6 KiB
C
87 lines
3.6 KiB
C
/*
|
|
* Emulation of Linux signals
|
|
*
|
|
* Copyright (c) 2003 Fabrice Bellard
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation; either version 2 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#ifndef SIGNAL_COMMON_H
|
|
#define SIGNAL_COMMON_H
|
|
|
|
int on_sig_stack(unsigned long sp);
|
|
int sas_ss_flags(unsigned long sp);
|
|
abi_ulong target_sigsp(abi_ulong sp, struct target_sigaction *ka);
|
|
void target_save_altstack(target_stack_t *uss, CPUArchState *env);
|
|
abi_long target_restore_altstack(target_stack_t *uss, CPUArchState *env);
|
|
|
|
static inline void target_sigemptyset(target_sigset_t *set)
|
|
{
|
|
memset(set, 0, sizeof(*set));
|
|
}
|
|
|
|
void host_to_target_sigset_internal(target_sigset_t *d,
|
|
const sigset_t *s);
|
|
void target_to_host_sigset_internal(sigset_t *d,
|
|
const target_sigset_t *s);
|
|
void tswap_siginfo(target_siginfo_t *tinfo,
|
|
const target_siginfo_t *info);
|
|
void set_sigmask(const sigset_t *set);
|
|
void force_sig(int sig);
|
|
void force_sigsegv(int oldsig);
|
|
#if defined(TARGET_ARCH_HAS_SETUP_FRAME)
|
|
void setup_frame(int sig, struct target_sigaction *ka,
|
|
target_sigset_t *set, CPUArchState *env);
|
|
#endif
|
|
void setup_rt_frame(int sig, struct target_sigaction *ka,
|
|
target_siginfo_t *info,
|
|
target_sigset_t *set, CPUArchState *env);
|
|
|
|
void process_pending_signals(CPUArchState *cpu_env);
|
|
void signal_init(void);
|
|
int queue_signal(CPUArchState *env, int sig, int si_type,
|
|
target_siginfo_t *info);
|
|
void host_to_target_siginfo(target_siginfo_t *tinfo, const siginfo_t *info);
|
|
void target_to_host_siginfo(siginfo_t *info, const target_siginfo_t *tinfo);
|
|
int target_to_host_signal(int sig);
|
|
int host_to_target_signal(int sig);
|
|
long do_sigreturn(CPUArchState *env);
|
|
long do_rt_sigreturn(CPUArchState *env);
|
|
abi_long do_sigaltstack(abi_ulong uss_addr, abi_ulong uoss_addr,
|
|
CPUArchState *env);
|
|
int do_sigprocmask(int how, const sigset_t *set, sigset_t *oldset);
|
|
abi_long do_swapcontext(CPUArchState *env, abi_ulong uold_ctx,
|
|
abi_ulong unew_ctx, abi_long ctx_size);
|
|
/**
|
|
* block_signals: block all signals while handling this guest syscall
|
|
*
|
|
* Block all signals, and arrange that the signal mask is returned to
|
|
* its correct value for the guest before we resume execution of guest code.
|
|
* If this function returns non-zero, then the caller should immediately
|
|
* return -TARGET_ERESTARTSYS to the main loop, which will take the pending
|
|
* signal and restart execution of the syscall.
|
|
* If block_signals() returns zero, then the caller can continue with
|
|
* emulation of the system call knowing that no signals can be taken
|
|
* (and therefore that no race conditions will result).
|
|
* This should only be called once, because if it is called a second time
|
|
* it will always return non-zero. (Think of it like a mutex that can't
|
|
* be recursively locked.)
|
|
* Signals will be unblocked again by process_pending_signals().
|
|
*
|
|
* Return value: non-zero if there was a pending signal, zero if not.
|
|
*/
|
|
int block_signals(void); /* Returns non zero if signal pending */
|
|
|
|
#endif
|