diff options
Diffstat (limited to 'vm_insnhelper.h')
| -rw-r--r-- | vm_insnhelper.h | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/vm_insnhelper.h b/vm_insnhelper.h index e65e889898..b5f35df2bd 100644 --- a/vm_insnhelper.h +++ b/vm_insnhelper.h @@ -201,6 +201,27 @@ enum vm_regan_acttype { /**********************************************************/ +/* deal with stack canary */ +/**********************************************************/ + +#if VM_CHECK_MODE > 0 +#define DECLARE_CANARY bool leaf; VALUE *canary +#define SETUP_CANARY() \ + if ((leaf = INSN_ATTR(leaf))) { \ + canary = GET_SP(); \ + SET_SV(vm_stack_canary); \ + } +#define CHECK_CANARY() \ + if (leaf && (*canary != vm_stack_canary)) { \ + vm_canary_is_found_dead(INSN_ATTR(bin), *canary); \ + } +#else +#define DECLARE_CANARY /* void */ +#define SETUP_CANARY() /* void */ +#define CHECK_CANARY() /* void */ +#endif + +/**********************************************************/ /* others */ /**********************************************************/ |