[hurd,commited] hurd: Add pointer guard support

Message ID 20200606013106.3281267-1-samuel.thibault@ens-lyon.org
State New
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  • [hurd,commited] hurd: Add pointer guard support
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Commit Message

Samuel Thibault June 6, 2020, 1:31 a.m.
* sysdeps/mach/hurd/i386/tls.h (THREAD_SET_POINTER_GUARD,
THREAD_COPY_POINTER_GUARD): New macros.
---
 sysdeps/mach/hurd/i386/tls.h | 7 +++++++
 1 file changed, 7 insertions(+)

-- 
2.26.2

Patch

diff --git a/sysdeps/mach/hurd/i386/tls.h b/sysdeps/mach/hurd/i386/tls.h
index 03a894bd35..97d0b1cbab 100644
--- a/sysdeps/mach/hurd/i386/tls.h
+++ b/sysdeps/mach/hurd/i386/tls.h
@@ -303,6 +303,13 @@  out:
   ((descr)->stack_guard							      \
    = THREAD_GETMEM (THREAD_SELF, stack_guard))
 
+/* Set the pointer guard field in the TCB head.  */
+#define THREAD_SET_POINTER_GUARD(value) \
+  THREAD_SETMEM (THREAD_SELF, pointer_guard, value)
+#define THREAD_COPY_POINTER_GUARD(descr) \
+  ((descr)->pointer_guard						      \
+   = THREAD_GETMEM (THREAD_SELF, pointer_guard))
+
 
 # include <mach/machine/thread_status.h>