diff options
Diffstat (limited to 'include/exec/cpu_ldst.h')
| -rw-r--r-- | include/exec/cpu_ldst.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/include/exec/cpu_ldst.h b/include/exec/cpu_ldst.h index a08b11bd2c..9de8c93303 100644 --- a/include/exec/cpu_ldst.h +++ b/include/exec/cpu_ldst.h @@ -89,6 +89,26 @@ typedef target_ulong abi_ptr; extern __thread uintptr_t helper_retaddr; +static inline void set_helper_retaddr(uintptr_t ra) +{ + helper_retaddr = ra; + /* + * Ensure that this write is visible to the SIGSEGV handler that + * may be invoked due to a subsequent invalid memory operation. + */ + signal_barrier(); +} + +static inline void clear_helper_retaddr(void) +{ + /* + * Ensure that previous memory operations have succeeded before + * removing the data visible to the signal handler. + */ + signal_barrier(); + helper_retaddr = 0; +} + /* In user-only mode we provide only the _code and _data accessors. */ #define MEMSUFFIX _data |