From ecfa912f4217c0af277bb5d9cd26155010556baf Mon Sep 17 00:00:00 2001
From: Samuel Thibault <samuel.thibault@ens-lyon.org>
Date: Sat, 6 Jun 2020 00:00:19 +0000
Subject: hurd: Add stack guard support

* sysdeps/mach/hurd/i386/tls.h (THREAD_SET_STACK_GUARD,
THREAD_COPY_STACK_GUARD): New macros
* sysdeps/mach/hurd/i386/ld.abilist (__stack_chk_guard): Remove symbol.
---
 sysdeps/mach/hurd/i386/tls.h | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'sysdeps/mach/hurd/i386/tls.h')

diff --git a/sysdeps/mach/hurd/i386/tls.h b/sysdeps/mach/hurd/i386/tls.h
index 0c2de054d8..03a894bd35 100644
--- a/sysdeps/mach/hurd/i386/tls.h
+++ b/sysdeps/mach/hurd/i386/tls.h
@@ -295,6 +295,15 @@ out:
      asm ("movl %%gs:%P1,%0" : "=q" (_dtv) : "i" (offsetof (tcbhead_t, dtv)));\
      _dtv; })
 
+
+/* Set the stack guard field in TCB head.  */
+#define THREAD_SET_STACK_GUARD(value) \
+  THREAD_SETMEM (THREAD_SELF, stack_guard, value)
+#define THREAD_COPY_STACK_GUARD(descr) \
+  ((descr)->stack_guard							      \
+   = THREAD_GETMEM (THREAD_SELF, stack_guard))
+
+
 # include <mach/machine/thread_status.h>
 
 /* Set up TLS in the new thread of a fork child, copying from the original.  */
-- 
cgit 1.4.1