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Refine AOT exception check when function return (#1752)

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Refine AOT exception check in the caller when returning from callee function,
remove the exception check instructions when hw bound check is enabled to
improve the performance: create guard page to trigger signal handler when
exception occurs.
This commit is contained in:
Wenyong Huang
2022-11-30 20:18:28 +08:00
committed by GitHub
parent 7cb1ebc771
commit ce3458da99
8 changed files with 163 additions and 50 deletions
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17
core/iwasm/common/wasm_runtime_common.c
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@ -185,6 +185,12 @@ runtime_signal_handler(void *sig_addr)
os_longjmp(jmpbuf_node->jmpbuf, 1);
}
#endif
else if (exec_env_tls->exce_check_guard_page <= (uint8 *)sig_addr
&& (uint8 *)sig_addr
< exec_env_tls->exce_check_guard_page + page_size) {
bh_assert(wasm_get_exception(module_inst));
os_longjmp(jmpbuf_node->jmpbuf, 1);
}
}
}
#else
@ -1435,6 +1441,17 @@ wasm_runtime_get_user_data(WASMExecEnv *exec_env)
return exec_env->user_data;
}
#ifdef OS_ENABLE_HW_BOUND_CHECK
void
wasm_runtime_access_exce_check_guard_page()
{
if (exec_env_tls && exec_env_tls->handle == os_self_thread()) {
uint32 page_size = os_getpagesize();
memset(exec_env_tls->exce_check_guard_page, 0, page_size);
}
}
#endif
WASMType *
wasm_runtime_get_function_type(const WASMFunctionInstanceCommon *function,
uint32 module_type)