mirror of
git://sourceware.org/git/glibc.git
synced 2024-12-21 04:31:04 +08:00
7b88401f3b
http://sourceware.org/ml/libc-alpha/2013-08/msg00087.html Fixes for little-endian in 32-bit assembly. * sysdeps/powerpc/sysdep.h (LOWORD, HIWORD, HISHORT): Define. * sysdeps/powerpc/powerpc32/fpu/s_copysign.S: Load little-endian words of double from correct stack offsets. * sysdeps/powerpc/powerpc32/fpu/s_copysignl.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/s_lrint.S: Likewise. * sysdeps/powerpc/powerpc32/fpu/s_lround.S: Likewise. * sysdeps/powerpc/powerpc32/power4/fpu/s_llrint.S: Likewise. * sysdeps/powerpc/powerpc32/power4/fpu/s_llrintf.S: Likewise. * sysdeps/powerpc/powerpc32/power5+/fpu/s_llround.S: Likewise. * sysdeps/powerpc/powerpc32/power5+/fpu/s_lround.S: Likewise. * sysdeps/powerpc/powerpc32/power5/fpu/s_isnan.S: Likewise. * sysdeps/powerpc/powerpc32/power6/fpu/s_isnan.S: Likewise. * sysdeps/powerpc/powerpc32/power6/fpu/s_llrint.S: Likewise. * sysdeps/powerpc/powerpc32/power6/fpu/s_llrintf.S: Likewise. * sysdeps/powerpc/powerpc32/power6/fpu/s_llround.S: Likewise. * sysdeps/powerpc/powerpc32/power7/fpu/s_finite.S: Likewise. * sysdeps/powerpc/powerpc32/power7/fpu/s_isinf.S: Likewise. * sysdeps/powerpc/powerpc32/power7/fpu/s_isnan.S: Likewise. * sysdeps/powerpc/powerpc64/power7/fpu/s_finite.S: Use HISHORT. * sysdeps/powerpc/powerpc64/power7/fpu/s_isinf.S: Likewise.
70 lines
2.1 KiB
ArmAsm
70 lines
2.1 KiB
ArmAsm
/* isinf(). PowerPC64/POWER7 version.
|
|
Copyright (C) 2010-2013 Free Software Foundation, Inc.
|
|
Contributed by Luis Machado <luisgpm@br.ibm.com>.
|
|
This file is part of the GNU C Library.
|
|
|
|
The GNU C Library is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU Lesser General Public
|
|
License as published by the Free Software Foundation; either
|
|
version 2.1 of the License, or (at your option) any later version.
|
|
|
|
The GNU C Library is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser General Public
|
|
License along with the GNU C Library; if not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <sysdep.h>
|
|
#include <math_ldbl_opt.h>
|
|
|
|
/* int __isinf(x) */
|
|
.section ".toc","aw"
|
|
.LC0: /* 1.0 */
|
|
.tc FD_ONE[TC],0x3ff0000000000000
|
|
.section ".text"
|
|
.type __isinf, @function
|
|
.machine power7
|
|
EALIGN (__isinf, 4, 0)
|
|
CALL_MCOUNT 0
|
|
lfd fp0,.LC0@toc(r2)
|
|
ftdiv cr7,fp1,fp0
|
|
li r3,0
|
|
bflr 29 /* If not INF, return. */
|
|
|
|
/* Either we have -INF/+INF or a denormal. */
|
|
|
|
stfd fp1,-16(r1) /* Transfer FP to GPR's. */
|
|
ori 2,2,0 /* Force a new dispatch group. */
|
|
lhz r4,-16+HISHORT(r1) /* Fetch the upper 16 bits of the FP value
|
|
(biased exponent and sign bit). */
|
|
cmpwi cr7,r4,0x7ff0 /* r4 == 0x7ff0? */
|
|
li r3,1
|
|
beqlr cr7 /* EQ means INF, otherwise -INF. */
|
|
li r3,-1
|
|
blr
|
|
END (__isinf)
|
|
|
|
hidden_def (__isinf)
|
|
weak_alias (__isinf, isinf)
|
|
|
|
/* It turns out that the 'double' version will also always work for
|
|
single-precision. */
|
|
strong_alias (__isinf, __isinff)
|
|
hidden_def (__isinff)
|
|
weak_alias (__isinff, isinff)
|
|
|
|
#ifdef NO_LONG_DOUBLE
|
|
strong_alias (__isinf, __isinfl)
|
|
weak_alias (__isinf, isinfl)
|
|
#endif
|
|
|
|
#ifndef IS_IN_libm
|
|
# if LONG_DOUBLE_COMPAT(libc, GLIBC_2_0)
|
|
compat_symbol (libc, __isinf, __isinfl, GLIBC_2_0);
|
|
compat_symbol (libc, isinf, isinfl, GLIBC_2_0);
|
|
# endif
|
|
#endif
|