From 6925c9c6f5e435fc88e683d7b9df475dd46c28ce Mon Sep 17 00:00:00 2001
From: shyouhei <shyouhei@b2dd03c8-39d4-4d8f-98ff-823fe69b080e>
Date: Thu, 13 Sep 2018 03:46:46 +0000
Subject: move canary-related statements into macros

This is mostly cosmetic.  Should generate a slightly readable
vm.inc output.


git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@64709 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
---
 vm_insnhelper.h | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

(limited to 'vm_insnhelper.h')

diff --git a/vm_insnhelper.h b/vm_insnhelper.h
index e65e889898..b5f35df2bd 100644
--- a/vm_insnhelper.h
+++ b/vm_insnhelper.h
@@ -200,6 +200,27 @@ 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                                                 */
 /**********************************************************/
-- 
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