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* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt.S: New File.

Browse Source 
* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt.c: Removed.
	* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf.S: New File.
	* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf.c: Removed.
	* sysdeps/powerpc/powerpc32/power5/fpu/w_sqrt.S: New File.
	* sysdeps/powerpc/powerpc32/power5/fpu/w_sqrtf.S: New File.
This commit is contained in:
Ulrich Drepper 2008-04-10 04:53:40 +00:00
parent 2120860435
commit aece054b30
8 changed files with 491 additions and 124 deletions
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9
ChangeLog
View File

@ -1,3 +1,12 @@
2007-10-26 Steven Munroe <sjmunroe@us.ibm.com>
* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt.S: New File.
* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt.c: Removed.
* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf.S: New File.
* sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf.c: Removed.
* sysdeps/powerpc/powerpc32/power5/fpu/w_sqrt.S: New File.
* sysdeps/powerpc/powerpc32/power5/fpu/w_sqrtf.S: New File.
2008-04-09 Ulrich Drepper <drepper@redhat.com>
[BZ #4314]

28
NEWS
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@ -1,5 +1,5 @@
GNU C Library NEWS -- history of user-visible changes. 2007-12-12
Copyright (C) 1992-2006, 2007 Free Software Foundation, Inc.
GNU C Library NEWS -- history of user-visible changes. 2008-4-9
Copyright (C) 1992-2007, 2008 Free Software Foundation, Inc.
See the end for copying conditions.
Please send GNU C library bug reports via <http://sources.redhat.com/bugzilla/>
@ -10,6 +10,30 @@ Version 2.8
* New locales: bo_CN, bo_IN.
* New encoding: HP-ROMAN9, HP-GREEK8, HP-THAI8, HP-TURKISH8.
* Sorting rules for some Indian languages (Devanagari and Gujarati).
Implemented by Pravin Satpute.
* IPV6 addresses in /etc/resolv.conf can now have a scope ID
* nscd caches now all timeouts for DNS entries
Implemented by Ulrich Drepper.
* nscd is more efficient and wakes up less often.
Implemented by Ulrich Drepper.
* More checking functions: asprintf, dprintf, obstack_printf, vasprintf,
vdprintf, and obstack_vprintf.
Implemented by Jakub Jelinek.
* Faster memset for x86-64.
Implemented by Harsha Jagasia and H.J. Lu.
* Faster memcpy on x86.
Implemented by Ulrich Drepper.
* ARG_MAX is not anymore constant on Linux. Use sysconf(_SC_ARG_MAX).
Implemented by Ulrich Drepper.
Version 2.7

119
sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt.S Normal file
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/* sqrt function. PowerPC32 version.
Copyright (C) 2007 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
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, write to the Free
Software Foundation, Inc., 1 Franklin Street, Fifth Floor, Boston MA
02110-1301 USA. */
#include <sysdep.h>
#include <math_ldbl_opt.h>
/* double [fp1] sqrt (double x [fp1])
Power4 (ISA V2.0) and above implement sqrt in hardware (not optional).
The fsqrt instruction generates the correct value for all inputs and
sets the appropriate floating point exceptions. Extented checking is
only needed to set errno (via __kernel_standard) if the input value
is negative.
The fsqrt will set FPCC and FU (Floating Point Unordered or NaN
to indicated that the input value was negative or NaN. Use Move to
Condition Register from FPSCR to copy the FPCC field to cr1. The
branch on summary overflow transfers control to w_sqrt to process
any error conditions. Otherwise we can return the result directly.
This part of the function is a leaf routine, so no need to stack a
frame or execute prologue/epilogue code. This means it is safe to
transfer directly to w_sqrt as long as the input value (f1) is
preserved. Putting the the sqrt result into f2 (double parameter 2)
allows passing both the input value and sqrt result into the extended
wrapper so there is no need to recompute.
This tactic avoids the overhead of stacking a frame for the normal
(non-error) case. Until gcc supports prologue shrink-wrapping
this is the best we can do. */
.section ".text"
.machine power4
EALIGN (__sqrt, 5, 0)
fsqrt fp2,fp1
mcrfs cr1,4
bso- cr1,.Lw_sqrt
fmr fp1,fp2
blr
.align 4
.Lw_sqrt:
mflr r0
stwu r1,-16(r1)
cfi_adjust_cfa_offset(16)
fmr fp12,fp2
stw r0,20(r1)
stw r30,8(r1)
cfi_offset(lr,20)
cfi_offset(r30,8)
#ifdef SHARED
# ifdef HAVE_ASM_PPC_REL16
bcl 20,31,.LCF1
.LCF1:
mflr r30
addis r30,r30,_GLOBAL_OFFSET_TABLE_-.LCF1@ha
addi r30,r30,_GLOBAL_OFFSET_TABLE_-.LCF1@l
lwz r9,_LIB_VERSION@got(30)
lwz r0,0(r9)
# else
bl _GLOBAL_OFFSET_TABLE_@local-4
mflr r30
lwz r9,_LIB_VERSION@got(30)
lwz r0,0(r9)
# endif
#else
lis r9,_LIB_VERSION@ha
lwz r0,_LIB_VERSION@l(r9)
#endif
/* if (_LIB_VERSION == _IEEE_) return z; */
cmpwi cr7,r0,-1
beq- cr7,.L4
/* if (x != x) return z; !isnan*/
fcmpu cr7,fp1,fp1
bne- cr7,.L4
/* if (x < 0.0)
return __kernel_standard (x, x, 26) */
fmr fp2,fp1
fabs fp0,fp1
li r3,26
fcmpu cr7,fp1,fp0
bne- cr7,.L11
.L4:
lwz r0,20(r1)
fmr fp1,fp12
lwz r30,8(r1)
addi r1,r1,16
mtlr r0
blr
.L11:
bl __kernel_standard@plt
fmr fp12,fp1
b .L4
END (__sqrt)
weak_alias (__sqrt, sqrt)
#ifdef NO_LONG_DOUBLE
weak_alias (__sqrt, sqrtl)
strong_alias (__sqrt, __sqrtl)
#endif
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
compat_symbol (libm, __sqrt, sqrtl, GLIBC_2_0)
#endif

62
sysdeps/powerpc/powerpc32/power4/fpu/w_sqrt.c
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@ -1,62 +0,0 @@
/* Double-precision floating point square root wrapper.
Copyright (C) 2004, 2007 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
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include <math_ldbl_opt.h>
#include "math.h"
#include "math_private.h"
#include <fenv_libc.h>
#ifdef __STDC__
double
__sqrt (double x) /* wrapper sqrt */
#else
double
__sqrt (x) /* wrapper sqrt */
double x;
#endif
{
double z;
/* Power4 (ISA V2.0) and above implement sqrt in hardware. */
__asm __volatile (
" fsqrt %0,%1\n"
: "=f" (z)
: "f" (x));
#ifdef _IEEE_LIBM
return z;
#else
if (__builtin_expect (_LIB_VERSION == _IEEE_, 0))
return z;
if (__builtin_expect (x != x, 0))
return z;
if (__builtin_expect (x < 0.0, 0))
return __kernel_standard (x, x, 26); /* sqrt(negative) */
else
return z;
#endif
}
weak_alias (__sqrt, sqrt)
#ifdef NO_LONG_DOUBLE
strong_alias (__sqrt, __sqrtl) weak_alias (__sqrt, sqrtl)
#endif
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
compat_symbol (libm, __sqrt, sqrtl, GLIBC_2_0);
#endif

111
sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf.S Normal file
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@ -0,0 +1,111 @@
/* sqrtf function. PowerPC32 version.
Copyright (C) 2007 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
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, write to the Free
Software Foundation, Inc., 1 Franklin Street, Fifth Floor, Boston MA
02110-1301 USA. */
#include <sysdep.h>
#include <math_ldbl_opt.h>
/* float [fp1] sqrts (float x [fp1])
Power4 (ISA V2.0) and above implement sqrt in hardware (not optional).
The fsqrts instruction generates the correct value for all inputs and
sets the appropriate floating point exceptions. Extented checking is
only needed to set errno (via __kernel_standard) if the input value
is negative.
The fsqrts will set FPCC and FU (Floating Point Unordered or NaN
to indicated that the input value was negative or NaN. Use Move to
Condition Register from FPSCR to copy the FPCC field to cr1. The
branch on summary overflow transfers control to w_sqrt to process
any error conditions. Otherwise we can return the result directly.
This part of the function is a leaf routine, so no need to stack a
frame or execute prologue/epilogue code. This means it is safe to
transfer directly to w_sqrt as long as the input value (f1) is
preserved. Putting the the sqrt result into f2 (float parameter 2)
allows passing both the input value and sqrt result into the extended
wrapper so there is no need to recompute.
This tactic avoids the overhead of stacking a frame for the normal
(non-error) case. Until gcc supports prologue shrink-wrapping
this is the best we can do. */
.section ".text"
.machine power4
EALIGN (__sqrtf, 5, 0)
fsqrts fp2,fp1
mcrfs cr1,4
bso- cr1,.Lw_sqrtf
fmr fp1,fp2
blr
.align 4
.Lw_sqrtf:
mflr r0
stwu r1,-16(r1)
cfi_adjust_cfa_offset(16)
fmr fp12,fp2
stw r0,20(r1)
stw r30,8(r1)
cfi_offset(lr,20)
cfi_offset(r30,8)
#ifdef SHARED
# ifdef HAVE_ASM_PPC_REL16
bcl 20,31,.LCF1
.LCF1:
mflr r30
addis r30,r30,_GLOBAL_OFFSET_TABLE_-.LCF1@ha
addi r30,r30,_GLOBAL_OFFSET_TABLE_-.LCF1@l
lwz r9,_LIB_VERSION@got(30)
lwz r0,0(r9)
# else
bl _GLOBAL_OFFSET_TABLE_@local-4
mflr r30
lwz r9,_LIB_VERSION@got(30)
lwz r0,0(r9)
# endif
#else
lis r9,_LIB_VERSION@ha
lwz r0,_LIB_VERSION@l(r9)
#endif
/* if (_LIB_VERSION == _IEEE_) return z; */
cmpwi cr7,r0,-1
beq- cr7,.L4
/* if (x != x, 0) return z; !isnan */
fcmpu cr7,fp1,fp1
bne- cr7,.L4
/* if (x < 0.0)
return __kernel_standard (x, x, 126) */
fmr fp2,fp1
fabs fp0,fp1
li r3,126
fcmpu cr7,1,0
bne- cr7,.L11
.L4:
lwz r0,20(r1)
fmr fp1,fp12
lwz r30,8(r1)
addi r1,r1,16
mtlr r0
blr
.L11:
bl __kernel_standard@plt
fmr fp12,fp1
b .L4
END (__sqrtf)
weak_alias (__sqrtf, sqrtf)

60
sysdeps/powerpc/powerpc32/power4/fpu/w_sqrtf.c
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@ -1,60 +0,0 @@
/* Single-precision floating point square root wrapper.
Copyright (C) 2004, 2007 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
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, write to the Free
Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA. */
#include "math.h"
#include "math_private.h"
#include <fenv_libc.h>
#include <sysdep.h>
#include <ldsodefs.h>
#ifdef __STDC__
float
__sqrtf (float x) /* wrapper sqrtf */
#else
float
__sqrtf (x) /* wrapper sqrtf */
float x;
#endif
{
#ifdef _IEEE_LIBM
return __ieee754_sqrtf (x);
#else
float z;
/* Power4 (ISA V2.0) and above implement sqrtf in hardware. */
__asm __volatile (
" fsqrts %0,%1\n"
: "=f" (z)
: "f" (x));
if (__builtin_expect (_LIB_VERSION == _IEEE_, 0))
return z;
if (__builtin_expect (x != x, 0))
return z;
if (__builtin_expect (x < 0.0, 0))
/* sqrtf(negative) */
return (float) __kernel_standard ((double) x, (double) x, 126);
else
return z;
#endif
}
weak_alias (__sqrtf, sqrtf)

117
sysdeps/powerpc/powerpc32/power5/fpu/w_sqrt.S Normal file
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@ -0,0 +1,117 @@
/* sqrt function. PowerPC32 version.
Copyright (C) 2007 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
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, write to the Free
Software Foundation, Inc., 1 Franklin Street, Fifth Floor, Boston MA
02110-1301 USA. */
#include <sysdep.h>
#include <math_ldbl_opt.h>
/* double [fp1] sqrt (double x [fp1])
Power4 (ISA V2.0) and above implement sqrt in hardware (not optional).
The fsqrt instruction generates the correct value for all inputs and
sets the appropriate floating point exceptions. Extented checking is
only needed to set errno (via __kernel_standard) if the input value
is negative.
So compare the input value against the absolute value of itself.
This will compare equal unless the value is negative (EDOM) or a NAN,
in which case we branch to the extend wrapper. If equal we can return
the result directly.
This part of the function looks like a leaf routine, so no need to
stack a frame or execute prologue/epilogue code. It is safe to
branch directly to w_sqrt as long as the input value (f1) is
preserved. Putting the the sqrt result into f2 (float parameter 2)
allows passing both the input value and sqrt result into the extended
wrapper so there is no need to recompute.
This tactic avoids the overhead of stacking a frame for the normal
(non-error) case. Until gcc supports prologue shrink-wrapping
this is the best we can do. */
.section ".text"
.machine power4
EALIGN (__sqrt, 5, 0)
fabs fp0,fp1
fsqrt fp2,fp1
fcmpu cr1,fp0,fp1
bne- cr1,.Lw_sqrt
fmr fp1,fp2
blr
.align 4
.Lw_sqrt:
mflr r0
stwu r1,-16(r1)
cfi_adjust_cfa_offset(16)
fmr fp12,fp2
stw r0,20(r1)
stw r30,8(r1)
cfi_offset(lr,20)
cfi_offset(r30,8)
#ifdef SHARED
# ifdef HAVE_ASM_PPC_REL16
bcl 20,31,.LCF1
.LCF1:
mflr r30
addis r30,r30,_GLOBAL_OFFSET_TABLE_-.LCF1@ha
addi r30,r30,_GLOBAL_OFFSET_TABLE_-.LCF1@l
lwz r9,_LIB_VERSION@got(30)
lwz r0,0(r9)
# else
bl _GLOBAL_OFFSET_TABLE_@local-4
mflr r30
lwz r9,_LIB_VERSION@got(30)
lwz r0,0(r9)
# endif
#else
lis r9,_LIB_VERSION@ha
lwz r0,_LIB_VERSION@l(r9)
#endif
/* if (_LIB_VERSION == _IEEE_) return z; */
cmpwi cr7,r0,-1
beq- cr7,.L4
/* if (x != x) return z; !isnan*/
fcmpu cr7,fp1,fp1
bne- cr7,.L4
/* if (x < 0.0)
return __kernel_standard (x, x, 26) */
fmr fp2,fp1
li r3,26
bne- cr1,.L11
.L4:
lwz r0,20(r1)
fmr fp1,fp12
lwz r30,8(r1)
addi r1,r1,16
mtlr r0
blr
.L11:
bl __kernel_standard@plt
fmr fp12,fp1
b .L4
END (__sqrt)
weak_alias (__sqrt, sqrt)
#ifdef NO_LONG_DOUBLE
weak_alias (__sqrt, sqrtl)
strong_alias (__sqrt, __sqrtl)
#endif
#if LONG_DOUBLE_COMPAT(libm, GLIBC_2_0)
compat_symbol (libm, __sqrt, sqrtl, GLIBC_2_0)
#endif

109
sysdeps/powerpc/powerpc32/power5/fpu/w_sqrtf.S Normal file
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@ -0,0 +1,109 @@
/* sqrtf function. PowerPC32 version.
Copyright (C) 2007 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
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, write to the Free
Software Foundation, Inc., 1 Franklin Street, Fifth Floor, Boston MA
02110-1301 USA. */
#include <sysdep.h>
#include <math_ldbl_opt.h>
/* float [fp1] sqrts (float x [fp1])
Power4 (ISA V2.0) and above implement sqrt in hardware (not optional).
The fsqrts instruction generates the correct value for all inputs and
sets the appropriate floating point exceptions. Extented checking is
only needed to set errno (via __kernel_standard) if the input value
is negative.
So compare the input value against the absolute value of itself.
This will compare equal unless the value is negative (EDOM) or a NAN,
in which case we branch to the extend wrapper. If equal we can return
the result directly.
This part of the function looks like a leaf routine, so no need to
stack a frame or execute prologue/epilogue code. It is safe to
branch directly to w_sqrt as long as the input value (f1) is
preserved. Putting the the sqrt result into f2 (float parameter 2)
allows passing both the input value and sqrt result into the extended
wrapper so there is no need to recompute.
This tactic avoids the overhead of stacking a frame for the normal
(non-error) case. Until gcc supports prologue shrink-wrapping
this is the best we can do. */
.section ".text"
.machine power4
EALIGN (__sqrtf, 5, 0)
fabs fp0,fp1
fsqrts fp2,fp1
fcmpu cr1,fp0,fp1
bne- cr1,.Lw_sqrtf
fmr fp1,fp2
blr
.align 4
.Lw_sqrtf:
mflr r0
stwu r1,-16(r1)
cfi_adjust_cfa_offset(16)
fmr fp12,fp2
stw r0,20(r1)
stw r30,8(r1)
cfi_offset(lr,20)
cfi_offset(r30,8)
#ifdef SHARED
# ifdef HAVE_ASM_PPC_REL16
bcl 20,31,.LCF1
.LCF1:
mflr r30
addis r30,r30,_GLOBAL_OFFSET_TABLE_-.LCF1@ha
addi r30,r30,_GLOBAL_OFFSET_TABLE_-.LCF1@l
lwz r9,_LIB_VERSION@got(30)
lwz r0,0(r9)
# else
bl _GLOBAL_OFFSET_TABLE_@local-4
mflr r30
lwz r9,_LIB_VERSION@got(30)
lwz r0,0(r9)
# endif
#else
lis r9,_LIB_VERSION@ha
lwz r0,_LIB_VERSION@l(r9)
#endif
/* if (_LIB_VERSION == _IEEE_) return z; */
cmpwi cr7,r0,-1
beq- cr7,.L4
/* if (x != x, 0) return z; !isnan */
fcmpu cr7,fp1,fp1
bne- cr7,.L4
/* if (x < 0.0)
return __kernel_standard (x, x, 126) */
fmr fp2,fp1
li r3,126
bne- cr1,.L11
.L4:
lwz r0,20(r1)
fmr fp1,fp12
lwz r30,8(r1)
addi r1,r1,16
mtlr r0
blr
.L11:
bl __kernel_standard@plt
fmr fp12,fp1
b .L4
END (__sqrtf)
weak_alias (__sqrtf, sqrtf)