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https://github.com/yuzu-emu/unicorn.git
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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
/*
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* emulator main execution loop
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*
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* Copyright (c) 2003-2005 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "cpu.h"
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#include "sysemu/cpus.h"
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#include "exec/exec-all.h"
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#include "exec/memory-internal.h"
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/* exit the current TB, but without causing any exception to be raised */
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void cpu_loop_exit_noexc(CPUState *cpu)
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{
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/* XXX: restore cpu registers saved in host registers */
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cpu->exception_index = -1;
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siglongjmp(cpu->jmp_env, 1);
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}
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void cpu_loop_exit(CPUState *cpu)
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{
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siglongjmp(cpu->jmp_env, 1);
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}
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void cpu_loop_exit_restore(CPUState *cpu, uintptr_t pc)
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{
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if (pc) {
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cpu_restore_state(cpu, pc);
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}
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siglongjmp(cpu->jmp_env, 1);
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}
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void cpu_loop_exit_atomic(CPUState *cpu, uintptr_t pc)
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{
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cpu->exception_index = EXCP_ATOMIC;
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cpu_loop_exit_restore(cpu, pc);
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}
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