linux-user: Add cpu_loop_exit_sigbus
This is a new interface to be provided by the os emulator for raising SIGBUS on fault. Use the new record_sigbus target hook. Reviewed-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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@ -700,6 +700,20 @@ void QEMU_NORETURN cpu_loop_exit_sigsegv(CPUState *cpu, target_ulong addr,
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MMUAccessType access_type,
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MMUAccessType access_type,
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bool maperr, uintptr_t ra);
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bool maperr, uintptr_t ra);
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/**
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* cpu_loop_exit_sigbus:
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* @cpu: the cpu context
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* @addr: the guest address of the alignment fault
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* @access_type: access was read/write/execute
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* @ra: host pc for unwinding
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*
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* Use the TCGCPUOps hook to record cpu state, do guest operating system
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* specific things to raise SIGBUS, and jump to the main cpu loop.
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*/
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void QEMU_NORETURN cpu_loop_exit_sigbus(CPUState *cpu, target_ulong addr,
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MMUAccessType access_type,
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uintptr_t ra);
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#else
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#else
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static inline void mmap_lock(void) {}
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static inline void mmap_lock(void) {}
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static inline void mmap_unlock(void) {}
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static inline void mmap_unlock(void) {}
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@ -706,6 +706,20 @@ void cpu_loop_exit_sigsegv(CPUState *cpu, target_ulong addr,
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cpu_loop_exit_restore(cpu, ra);
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cpu_loop_exit_restore(cpu, ra);
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}
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}
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void cpu_loop_exit_sigbus(CPUState *cpu, target_ulong addr,
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MMUAccessType access_type, uintptr_t ra)
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{
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const struct TCGCPUOps *tcg_ops = CPU_GET_CLASS(cpu)->tcg_ops;
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if (tcg_ops->record_sigbus) {
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tcg_ops->record_sigbus(cpu, addr, access_type, ra);
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}
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force_sig_fault(TARGET_SIGBUS, TARGET_BUS_ADRALN, addr);
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cpu->exception_index = EXCP_INTERRUPT;
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cpu_loop_exit_restore(cpu, ra);
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}
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/* abort execution with signal */
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/* abort execution with signal */
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static void QEMU_NORETURN dump_core_and_abort(int target_sig)
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static void QEMU_NORETURN dump_core_and_abort(int target_sig)
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{
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{
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