From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sat, 6 Jun 2020 01:26:00 +0000 (+0000)
Subject: hurd: Add pointer guard support
X-Git-Tag: glibc-2.32~252
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8fcc772da8381476e914979fc887fdc54e62b15f;p=thirdparty%2Fglibc.git

hurd: Add pointer guard support

* sysdeps/mach/hurd/i386/tls.h (THREAD_SET_POINTER_GUARD,
THREAD_COPY_POINTER_GUARD): New macros.
---

diff --git a/sysdeps/mach/hurd/i386/tls.h b/sysdeps/mach/hurd/i386/tls.h
index 03a894bd35e..97d0b1cbab6 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>