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authorJoseph Myers <joseph@codesourcery.com>2012-05-15 23:34:30 +0000
committerJoseph Myers <joseph@codesourcery.com>2012-05-15 23:34:30 +0000
commita9538892adfbb9f092e0bb14ff3a1703973968af (patch)
tree19c746fa67ff63159fb1b261fc257acd8fea4aee /sysdeps/x86_64
parent93171016830e1ed4ec77c46cd4c32156d4624c1a (diff)
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Split up stackguard-macros.h into sysdeps directories.
Diffstat (limited to 'sysdeps/x86_64')
-rw-r--r--sysdeps/x86_64/stackguard-macros.h6
1 files changed, 6 insertions, 0 deletions
diff --git a/sysdeps/x86_64/stackguard-macros.h b/sysdeps/x86_64/stackguard-macros.h
new file mode 100644
index 0000000..d7fedb3
--- /dev/null
+++ b/sysdeps/x86_64/stackguard-macros.h
@@ -0,0 +1,6 @@
+#include <stdint.h>
+
+#define STACK_CHK_GUARD \
+ ({ uintptr_t x; \
+ asm ("mov %%fs:%c1, %0" : "=r" (x) \
+ : "i" (offsetof (tcbhead_t, stack_guard))); x; })