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[PATCH 06/14] tile: support stackguard-macros.h header
- From: Chris Metcalf <cmetcalf at tilera dot com>
- To: <libc-ports at sourceware dot org>
- Date: Fri, 11 May 2012 16:11:04 -0400
- Subject: [PATCH 06/14] tile: support stackguard-macros.h header
- References: <4FB161CE.6070905@tilera.com>
---
ChangeLog.tile | 5 +++++
sysdeps/tile/elf/stackguard-macros.h | 3 +++
sysdeps/tile/stackguard-macros.h | 7 +++++++
3 files changed, 15 insertions(+), 0 deletions(-)
create mode 100644 sysdeps/tile/elf/stackguard-macros.h
create mode 100644 sysdeps/tile/stackguard-macros.h
diff --git a/ChangeLog.tile b/ChangeLog.tile
index 46336a5..2ce98e9 100644
--- a/ChangeLog.tile
+++ b/ChangeLog.tile
@@ -1,5 +1,10 @@
2012-05-12 Chris Metcalf <cmetcalf@tilera.com>
+ * sysdeps/tile/stackguard-macros.h: New file.
+ * sysdeps/tile/elf/stackguard-macros.h: New stub include file.
+
+2012-05-12 Chris Metcalf <cmetcalf@tilera.com>
+
* sysdeps/tile/Makefile (ELF_MACHINE_PLTREL_OVERLAP):
Remove variable no longer used by core.
diff --git a/sysdeps/tile/elf/stackguard-macros.h b/sysdeps/tile/elf/stackguard-macros.h
new file mode 100644
index 0000000..606ad58
--- /dev/null
+++ b/sysdeps/tile/elf/stackguard-macros.h
@@ -0,0 +1,3 @@
+/* Tests in nptl/ look for <elf/stackguard-macros.h> while tests
+ in elf/ look for <stackguard-macros.h>. Provide both. */
+#include "../stackguard-macros.h"
diff --git a/sysdeps/tile/stackguard-macros.h b/sysdeps/tile/stackguard-macros.h
new file mode 100644
index 0000000..7679c0a
--- /dev/null
+++ b/sysdeps/tile/stackguard-macros.h
@@ -0,0 +1,7 @@
+#ifdef __tilegx__
+# define STACK_CHK_GUARD \
+ ({ uintptr_t x; asm ("addi %0, tp, -16; ld %0, %0" : "=r" (x)); x; })
+#else
+# define STACK_CHK_GUARD \
+ ({ uintptr_t x; asm ("addi %0, tp, -8; lw %0, %0" : "=r" (x)); x; })
+#endif
--
1.6.5.2