mirror of
https://github.com/yuzu-emu/unicorn.git
synced 2024-10-19 12:08:20 +02:00
e35aacd5ae
When we cannot emulate an atomic operation within a parallel context, this exception allows us to stop the world and try again in a serial context. Backports commit fdbc2b5722f6092e47181a947c90fd4bdcc1c121 from qemu Also backports parts of commit 02d57ea115b7669f588371c86484a2e8ebc369be
53 lines
1.5 KiB
C
53 lines
1.5 KiB
C
/*
|
|
* emulator main execution loop
|
|
*
|
|
* Copyright (c) 2003-2005 Fabrice Bellard
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "qemu/osdep.h"
|
|
#include "cpu.h"
|
|
#include "sysemu/cpus.h"
|
|
#include "exec/exec-all.h"
|
|
#include "exec/memory-internal.h"
|
|
|
|
/* exit the current TB, but without causing any exception to be raised */
|
|
void cpu_loop_exit_noexc(CPUState *cpu)
|
|
{
|
|
/* XXX: restore cpu registers saved in host registers */
|
|
|
|
cpu->exception_index = -1;
|
|
siglongjmp(cpu->jmp_env, 1);
|
|
}
|
|
|
|
void cpu_loop_exit(CPUState *cpu)
|
|
{
|
|
siglongjmp(cpu->jmp_env, 1);
|
|
}
|
|
|
|
void cpu_loop_exit_restore(CPUState *cpu, uintptr_t pc)
|
|
{
|
|
if (pc) {
|
|
cpu_restore_state(cpu, pc);
|
|
}
|
|
siglongjmp(cpu->jmp_env, 1);
|
|
}
|
|
|
|
void cpu_loop_exit_atomic(CPUState *cpu, uintptr_t pc)
|
|
{
|
|
cpu->exception_index = EXCP_ATOMIC;
|
|
cpu_loop_exit_restore(cpu, pc);
|
|
}
|