diff options
Diffstat (limited to 'wasm2c/wasm-rt-impl.h')
| -rw-r--r-- | wasm2c/wasm-rt-impl.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/wasm2c/wasm-rt-impl.h b/wasm2c/wasm-rt-impl.h index f4bfa09d..bdc4502f 100644 --- a/wasm2c/wasm-rt-impl.h +++ b/wasm2c/wasm-rt-impl.h @@ -28,6 +28,9 @@ extern "C" { /** A setjmp buffer used for handling traps. */ extern jmp_buf g_jmp_buf; +/** Saved call stack depth that will be restored in case a trap occurs. */ +extern uint32_t g_saved_call_stack_depth; + /** Convenience macro to use before calling a wasm function. On first execution * it will return `WASM_RT_TRAP_NONE` (i.e. 0). If the function traps, it will * jump back and return the trap that occurred. @@ -43,7 +46,8 @@ extern jmp_buf g_jmp_buf; * my_wasm_func(); * ``` */ -#define wasm_rt_impl_try() setjmp(g_jmp_buf) +#define wasm_rt_impl_try() \ + (g_saved_call_stack_depth = wasm_rt_call_stack_depth, setjmp(g_jmp_buf)) #ifdef __cplusplus } |