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GNU C Library master sources branch, master, updated. glibc-2.15-581-g8de131c
- From: roland at sourceware dot org
- To: glibc-cvs at sourceware dot org
- Date: 9 Apr 2012 19:23:59 -0000
- Subject: GNU C Library master sources branch, master, updated. glibc-2.15-581-g8de131c
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- Log -----------------------------------------------------------------
http://sources.redhat.com/git/gitweb.cgi?p=glibc.git;a=commitdiff;h=8de131cbff365a34392ee3314ee5ea8007a877fe
commit 8de131cbff365a34392ee3314ee5ea8007a877fe
Author: Roland McGrath <roland@hack.frob.com>
Date: Mon Apr 9 12:20:48 2012 -0700
Fix missing clobber in i386 __sincos_code asm.
diff --git a/ChangeLog b/ChangeLog
index 58006ee..7be8eb0 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2012-04-09 Roland McGrath <roland@hack.frob.com>
+
+ * sysdeps/i386/fpu/bits/mathinline.h (__sincos_code): Don't clobber
+ %eax without telling the compiler.
+
2012-04-09 Carlos O'Donell <carlos_odonell@mentor.com>
[BZ # 13963]
diff --git a/sysdeps/i386/fpu/bits/mathinline.h b/sysdeps/i386/fpu/bits/mathinline.h
index 276acf8..6561eba 100644
--- a/sysdeps/i386/fpu/bits/mathinline.h
+++ b/sysdeps/i386/fpu/bits/mathinline.h
@@ -1,6 +1,5 @@
/* Inline math functions for i387.
- Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2003,2004,2006,2007,2009,
- 2010 Free Software Foundation, Inc.
+ Copyright (C) 1995-2012 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by John C. Bowman <bowman@math.ualberta.ca>, 1995.
@@ -324,22 +323,23 @@ __inline_mathcode (__pow2, __x, \
# define __sincos_code \
register long double __cosr; \
register long double __sinr; \
+ register unsigned int __swtmp; \
__asm __volatile__ \
("fsincos\n\t" \
- "fnstsw %%ax\n\t" \
- "testl $0x400, %%eax\n\t" \
+ "fnstsw %w2\n\t" \
+ "testl $0x400, %2\n\t" \
"jz 1f\n\t" \
"fldpi\n\t" \
"fadd %%st(0)\n\t" \
"fxch %%st(1)\n\t" \
"2: fprem1\n\t" \
- "fnstsw %%ax\n\t" \
- "testl $0x400, %%eax\n\t" \
+ "fnstsw %w2\n\t" \
+ "testl $0x400, %2\n\t" \
"jnz 2b\n\t" \
"fstp %%st(1)\n\t" \
"fsincos\n\t" \
"1:" \
- : "=t" (__cosr), "=u" (__sinr) : "0" (__x)); \
+ : "=t" (__cosr), "=u" (__sinr), "=a" (__swtmp) : "0" (__x)); \
*__sinx = __sinr; \
*__cosx = __cosr
-----------------------------------------------------------------------
Summary of changes:
ChangeLog | 5 +++++
sysdeps/i386/fpu/bits/mathinline.h | 14 +++++++-------
2 files changed, 12 insertions(+), 7 deletions(-)
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