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/*
* qemu user cpu loop
*
* Copyright (c) 2003-2008 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 USER_CPU_LOOP_H
#define USER_CPU_LOOP_H
#include "exec/vaddr.h"
#include "exec/mmu-access-type.h"
/**
* adjust_signal_pc:
* @pc: raw pc from the host signal ucontext_t.
* @is_write: host memory operation was write, or read-modify-write.
*
* Alter @pc as required for unwinding. Return the type of the
* guest memory access -- host reads may be for guest execution.
*/
MMUAccessType adjust_signal_pc(uintptr_t *pc, bool is_write);
/**
* handle_sigsegv_accerr_write:
* @cpu: the cpu context
* @old_set: the sigset_t from the signal ucontext_t
* @host_pc: the host pc, adjusted for the signal
* @host_addr: the host address of the fault
*
* Return true if the write fault has been handled, and should be re-tried.
*/
bool handle_sigsegv_accerr_write(CPUState *cpu, sigset_t *old_set,
uintptr_t host_pc, vaddr guest_addr);
/**
* cpu_loop_exit_sigsegv:
* @cpu: the cpu context
* @addr: the guest address of the fault
* @access_type: access was read/write/execute
* @maperr: true for invalid page, false for permission fault
* @ra: host pc for unwinding
*
* Use the TCGCPUOps hook to record cpu state, do guest operating system
* specific things to raise SIGSEGV, and jump to the main cpu loop.
*/
G_NORETURN void cpu_loop_exit_sigsegv(CPUState *cpu, vaddr addr,
MMUAccessType access_type,
bool maperr, uintptr_t ra);
/**
* cpu_loop_exit_sigbus:
* @cpu: the cpu context
* @addr: the guest address of the alignment fault
* @access_type: access was read/write/execute
* @ra: host pc for unwinding
*
* Use the TCGCPUOps hook to record cpu state, do guest operating system
* specific things to raise SIGBUS, and jump to the main cpu loop.
*/
G_NORETURN void cpu_loop_exit_sigbus(CPUState *cpu, vaddr addr,
MMUAccessType access_type,
uintptr_t ra);
G_NORETURN void cpu_loop(CPUArchState *env);
void target_exception_dump(CPUArchState *env, const char *fmt, int code);
#define EXCP_DUMP(env, fmt, code) \
target_exception_dump(env, fmt, code)
typedef struct target_pt_regs target_pt_regs;
void target_cpu_copy_regs(CPUArchState *env, target_pt_regs *regs);
#endif
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