mirror of https://github.com/proxmox/mirror_qemu
29 lines
635 B
C
29 lines
635 B
C
#ifndef ACCEL_TCG_USER_RETADDR_H
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#define ACCEL_TCG_USER_RETADDR_H
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#include "qemu/atomic.h"
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extern __thread uintptr_t helper_retaddr;
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static inline void set_helper_retaddr(uintptr_t ra)
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{
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helper_retaddr = ra;
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/*
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* Ensure that this write is visible to the SIGSEGV handler that
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* may be invoked due to a subsequent invalid memory operation.
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*/
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signal_barrier();
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}
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static inline void clear_helper_retaddr(void)
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{
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/*
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* Ensure that previous memory operations have succeeded before
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* removing the data visible to the signal handler.
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*/
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signal_barrier();
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helper_retaddr = 0;
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}
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#endif
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