ShuriZma
/
xemu
mirror of https://github.com/xemu-project/xemu.git
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity

accel/tcg: Fold cpu_exit_tb_from_sighandler into caller 

Remove the comment about siglongjmp.  We do use sigsetjmp
in the main cpu loop, but we do not save the signal mask
as most exits from the cpu loop do not require them.

Reviewed-by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2021-09-13 13:04:11 -07:00
parent 5e38ba7dde
commit 940b30904e
1 changed files with 2 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

14
accel/tcg/user-exec.c
View File

@ -46,17 +46,6 @@ __thread uintptr_t helper_retaddr;
//#define DEBUG_SIGNAL
/* exit the current TB from a signal handler. The host registers are
restored in a state compatible with the CPU emulator
*/
static void QEMU_NORETURN cpu_exit_tb_from_sighandler(CPUState *cpu,
sigset_t *old_set)
{
/* XXX: use siglongjmp ? */
sigprocmask(SIG_SETMASK, old_set, NULL);
cpu_loop_exit_noexc(cpu);
}
/*
* Adjust the pc to pass to cpu_restore_state; return the memop type.
*/
@ -153,7 +142,8 @@ bool handle_sigsegv_accerr_write(CPUState *cpu, sigset_t *old_set,
* Fault caused by protection of cached translation, and the
* currently executing TB was modified and must be exited immediately.
*/
cpu_exit_tb_from_sighandler(cpu, old_set);
sigprocmask(SIG_SETMASK, old_set, NULL);
cpu_loop_exit_noexc(cpu);
/* NORETURN */
default:
g_assert_not_reached();