diff options
author | Thomas Schwinge <thomas@codesourcery.com> | 2013-12-20 09:29:29 +0100 |
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committer | Thomas Schwinge <thomas@codesourcery.com> | 2013-12-20 09:29:29 +0100 |
commit | a65dd355fb80a05215e15ae97649de52aec885e3 (patch) | |
tree | 81701bb0c6b648630f2bf1729a85d7f5eb49e67b /sysdeps/s390/s390-32/stackguard-macros.h | |
parent | 296a5732f94abe4d5699dc981e4ccfb950b48cee (diff) | |
parent | b4578bab30f72cddd2cf38abfb39f9c8dc892249 (diff) |
Merge branch 'baseline' into refs/top-bases/tschwinge/Roger_Whittaker
Diffstat (limited to 'sysdeps/s390/s390-32/stackguard-macros.h')
-rw-r--r-- | sysdeps/s390/s390-32/stackguard-macros.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/sysdeps/s390/s390-32/stackguard-macros.h b/sysdeps/s390/s390-32/stackguard-macros.h index b74c5799b3..449e8d488f 100644 --- a/sysdeps/s390/s390-32/stackguard-macros.h +++ b/sysdeps/s390/s390-32/stackguard-macros.h @@ -2,3 +2,14 @@ #define STACK_CHK_GUARD \ ({ uintptr_t x; asm ("ear %0,%%a0; l %0,0x14(%0)" : "=a" (x)); x; }) + +/* On s390/s390x there is no unique pointer guard, instead we use the + same value as the stack guard. */ +#define POINTER_CHK_GUARD \ + ({ \ + uintptr_t x; \ + asm ("ear %0,%%a0; l %0,%1(%0)" \ + : "=a" (x) \ + : "i" (offsetof (tcbhead_t, stack_guard))); \ + x; \ + }) |