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GNU C Library master sources branch master updated. glibc-2.16-ports-merge-595-gd7d08bd
- From: rsa at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 2 Nov 2012 16:29:41 -0000
- Subject: GNU C Library master sources branch master updated. glibc-2.16-ports-merge-595-gd7d08bd
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- Log -----------------------------------------------------------------
http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=d7d08bdedeecf168ef58c7e2bdbb4c39c1939aba
commit d7d08bdedeecf168ef58c7e2bdbb4c39c1939aba
Author: Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
Date: Fri Nov 2 11:20:39 2012 -0500
Direct __ppc_get_timebase to __builtin_ppc_get_timebase for GCC 4.8+.
Adapts __ppc_get_timebase to the upcoming GCC 4.8 that provides
__builtin_ppc_get_timebase. Building applicationns with previous
versions of GCC will continue to use the internal implementation.
diff --git a/ChangeLog b/ChangeLog
index 5dad3dc..d85ffee 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,9 @@
+2012-11-02 Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
+
+ * sysdeps/powerpc/sys/platform/ppc.h (__ppc_get_timebase): Use
+ __builtin_ppc_get_timebase when building with GCC >= 4.8 instead
+ of the internal implementation.
+
2012-11-02 Joseph Myers <joseph@codesourcery.com>
* include/sys/syslog.h [_ISOMAC]: Disable all contents of file
diff --git a/sysdeps/powerpc/sys/platform/ppc.h b/sysdeps/powerpc/sys/platform/ppc.h
index 3780f57..58948e8 100644
--- a/sysdeps/powerpc/sys/platform/ppc.h
+++ b/sysdeps/powerpc/sys/platform/ppc.h
@@ -19,6 +19,7 @@
#ifndef _SYS_PLATFORM_PPC_H
#define _SYS_PLATFORM_PPC_H 1
+#include <features.h>
#include <stdint.h>
#include <bits/ppc.h>
@@ -26,13 +27,16 @@
static inline uint64_t
__ppc_get_timebase (void)
{
-#ifdef __powerpc64__
+#if __GNUC_PREREQ (4, 8)
+ return __builtin_ppc_get_timebase ();
+#else
+# ifdef __powerpc64__
uint64_t __tb;
/* "volatile" is necessary here, because the user expects this assembly
isn't moved after an optimization. */
__asm__ volatile ("mfspr %0, 268" : "=r" (__tb));
return __tb;
-#else /* not __powerpc64__ */
+# else /* not __powerpc64__ */
uint32_t __tbu, __tbl, __tmp; \
__asm__ volatile ("0:\n\t"
"mftbu %0\n\t"
@@ -42,7 +46,8 @@ __ppc_get_timebase (void)
"bne- 0b"
: "=r" (__tbu), "=r" (__tbl), "=r" (__tmp));
return (((uint64_t) __tbu << 32) | __tbl);
-#endif /* not __powerpc64__ */
+# endif /* not __powerpc64__ */
+#endif
}
#endif /* sys/platform/ppc.h */
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 6 ++++++
sysdeps/powerpc/sys/platform/ppc.h | 11 ++++++++---
2 files changed, 14 insertions(+), 3 deletions(-)
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