From a334319f6530564d22e775935d9c91663623a1b4 Mon Sep 17 00:00:00 2001
From: Ulrich Drepper <drepper@redhat.com>
Date: Wed, 22 Dec 2004 20:10:10 +0000
Subject: (CFLAGS-tst-align.c): Add -mpreferred-stack-boundary=4.

---
 sysdeps/powerpc/powerpc32/fpu/s_trunc.S | 64 ++++++++++++++++++---------------
 1 file changed, 36 insertions(+), 28 deletions(-)

(limited to 'sysdeps/powerpc/powerpc32/fpu/s_trunc.S')

diff --git a/sysdeps/powerpc/powerpc32/fpu/s_trunc.S b/sysdeps/powerpc/powerpc32/fpu/s_trunc.S
index 5bc0856b9f..a4be651f8c 100644
--- a/sysdeps/powerpc/powerpc32/fpu/s_trunc.S
+++ b/sysdeps/powerpc/powerpc32/fpu/s_trunc.S
@@ -1,5 +1,5 @@
 /* trunc function.  PowerPC32 version.
-   Copyright (C) 2004, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2004 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -14,16 +14,32 @@
 
    You should have received a copy of the GNU Lesser General Public
    License along with the GNU C Library; if not, write to the Free
-   Software Foundation, Inc., 1 Franklin Street, Fifth Floor, Boston MA
-   02110-1301 USA.  */
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
 
 #include <sysdep.h>
-#include <math_ldbl_opt.h>
 
-	.section	.rodata.cst4,"aM",@progbits,4
-	.align	2
+	.section	.rodata
+	.align 3
+	.type	TWO52.0,@object
+	.size	TWO52.0,8
+TWO52.0:
+	.long 0x43300000
+	.long 0
+	.type	NEGZERO.0,@object
+	.size	NEGZERO.0,8
+NEGZERO.0:
+	.long 0x80000000
+	.long 0
+
+	.section	.rodata.cst8,"aM",@progbits,8
+	.align 3
 .LC0:	/* 2**52 */
-	.long 0x59800000
+	.long 0x43300000
+	.long 0
+.LC1:	/* -0.0 */
+	.long 0x80000000
+	.long 0
 
 /* double [fp1] trunc (double x [fp1])
    IEEE 1003.1 trunc function.  IEEE specifies "trunc to the integer
@@ -32,28 +48,18 @@
    We set "round toward Zero" mode and trunc by adding +-2**52 then
    subtracting +-2**52.  */
 
-	.section	".text"
 ENTRY (__trunc)
 	mffs	fp11		/* Save current FPU rounding mode.  */
 #ifdef SHARED
 	mflr	r11
-	cfi_register(lr,r11)
-# ifdef HAVE_ASM_PPC_REL16
-	bcl	20,31,1f
-1:	mflr	r9
-	addis	r9,r9,.LC0-1b@ha
-	lfs	fp13,.LC0-1b@l(r9)
-# else
 	bl	_GLOBAL_OFFSET_TABLE_@local-4
 	mflr	r10
 	lwz	r9,.LC0@got(10)
-	lfs	fp13,0(r9)
-# endif
 	mtlr	r11
-	cfi_same_value (lr)
+	lfd	fp13,0(r9)
 #else
 	lis	r9,.LC0@ha
-	lfs	fp13,.LC0@l(r9)
+	lfd	fp13,.LC0@l(r9)
 #endif
 	fabs	fp0,fp1
 	fsub	fp12,fp13,fp13	/* generate 0.0  */
@@ -64,18 +70,23 @@ ENTRY (__trunc)
 	ble-	cr6,.L4
 	fadd	fp1,fp1,fp13	/* x+= TWO52;  */
 	fsub	fp1,fp1,fp13	/* x-= TWO52;  */
-	fabs	fp1,fp1		/* if (x == 0.0)  */
-				/* x = 0.0; */
-	mtfsf	0x01,fp11	/* restore previous rounding mode.  */
+.L9:	
+	mtfsf	0x01,fp11	/* restore previous truncing mode.  */
 	blr
 .L4:
 	bge-	cr6,.L9		/* if (x < 0.0)  */
 	fsub	fp1,fp1,fp13	/* x-= TWO52;  */
 	fadd	fp1,fp1,fp13	/* x+= TWO52;  */
-	fnabs	fp1,fp1		/* if (x == 0.0)  */
-				/* x = -0.0; */
-.L9:
+	fcmpu	cr5,fp1,fp12	/* if (x > 0.0)  */
 	mtfsf	0x01,fp11	/* restore previous rounding mode.  */
+	bnelr+	cr5
+#ifdef SHARED
+	lwz	r9,.LC1@got(10)
+	lfd	fp1,0(r9)
+#else
+	lis	r9,.LC1@ha
+	lfd	fp1,.LC1@l(r9)
+#endif
 	blr
 	END (__trunc)
 
@@ -85,6 +96,3 @@ weak_alias (__trunc, trunc)
 weak_alias (__trunc, truncl)
 strong_alias (__trunc, __truncl)
 #endif
-#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_1)
-compat_symbol (libm, __trunc, truncl, GLIBC_2_1)
-#endif
-- 
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