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powerpc: Remove bcopy optimizations

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The symbols is not present in current POSIX specification and compiler
already generates memmove call.
This commit is contained in:
Adhemerval Zanella 2022-02-10 11:08:59 -03:00
parent 80b85f92f4
commit 86a82cd57c
9 changed files with 1 additions and 113 deletions
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13
sysdeps/powerpc/powerpc64/le/power10/memmove.S
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@ -305,16 +305,3 @@ L(tail1_bwd):
END_GEN_TB (MEMMOVE,TB_TOCLESS)
libc_hidden_builtin_def (memmove)
/* void bcopy(const void *src [r3], void *dest [r4], size_t n [r5])
Implemented in this file to avoid linker create a stub function call
in the branch to '_memmove'. */
ENTRY_TOCLESS (__bcopy)
mr r6,r3
mr r3,r4
mr r4,r6
b L(_memmove)
END (__bcopy)
#ifndef __bcopy
weak_alias (__bcopy, bcopy)
#endif

2
sysdeps/powerpc/powerpc64/multiarch/Makefile
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@ -24,7 +24,7 @@ sysdep_routines += memcpy-power8-cached memcpy-power7 memcpy-a2 memcpy-power6 \
stpncpy-power8 stpncpy-power7 stpncpy-ppc64 \
strcmp-power8 strcmp-power7 strcmp-ppc64 \
strcat-power8 strcat-power7 strcat-ppc64 \
memmove-power7 memmove-ppc64 wordcopy-ppc64 bcopy-ppc64 \
memmove-power7 memmove-ppc64 wordcopy-ppc64 \
strncpy-power8 strstr-power7 strstr-ppc64 \
strspn-power8 strspn-ppc64 strcspn-power8 strcspn-ppc64 \
strlen-power8 strcasestr-power8 strcasestr-ppc64 \

27
sysdeps/powerpc/powerpc64/multiarch/bcopy-ppc64.c
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@ -1,27 +0,0 @@
/* PowerPC64 default bcopy.
Copyright (C) 2014-2022 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, see
<https://www.gnu.org/licenses/>. */
#include <string.h>
extern __typeof (bcopy) __bcopy_ppc attribute_hidden;
extern __typeof (memmove) __memmove_ppc attribute_hidden;
void __bcopy_ppc (const void *src, void *dest, size_t n)
{
__memmove_ppc (dest, src, n);
}

38
sysdeps/powerpc/powerpc64/multiarch/bcopy.c
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@ -1,38 +0,0 @@
/* PowerPC64 multiarch bcopy.
Copyright (C) 2014-2022 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, see
<https://www.gnu.org/licenses/>. */
#include <string.h>
#include "init-arch.h"
extern __typeof (bcopy) __bcopy_ppc attribute_hidden;
/* __bcopy_power7 symbol is implemented at memmove-power7.S */
extern __typeof (bcopy) __bcopy_power7 attribute_hidden;
#ifdef __LITTLE_ENDIAN__
extern __typeof (bcopy) __bcopy_power10 attribute_hidden;
#endif
libc_ifunc (bcopy,
#ifdef __LITTLE_ENDIAN__
(hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
&& hwcap & PPC_FEATURE_HAS_VSX)
? __bcopy_power10 :
#endif
(hwcap & PPC_FEATURE_HAS_VSX)
? __bcopy_power7
: __bcopy_ppc);

13
sysdeps/powerpc/powerpc64/multiarch/ifunc-impl-list.c
View File

@ -244,19 +244,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
__bzero_power4)
IFUNC_IMPL_ADD (array, i, bzero, 1, __bzero_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/bcopy.c. */
IFUNC_IMPL (i, name, bcopy,
#ifdef __LITTLE_ENDIAN__
IFUNC_IMPL_ADD (array, i, bcopy,
hwcap2 & PPC_FEATURE2_ARCH_3_1
&& hwcap2 & PPC_FEATURE2_HAS_ISEL
&& hwcap & PPC_FEATURE_HAS_VSX,
__bcopy_power10)
#endif
IFUNC_IMPL_ADD (array, i, bcopy, hwcap & PPC_FEATURE_HAS_VSX,
__bcopy_power7)
IFUNC_IMPL_ADD (array, i, bcopy, 1, __bcopy_ppc))
/* Support sysdeps/powerpc/powerpc64/multiarch/mempcpy.c. */
IFUNC_IMPL (i, name, mempcpy,
IFUNC_IMPL_ADD (array, i, mempcpy,

3
sysdeps/powerpc/powerpc64/multiarch/memmove-power10.S
View File

@ -21,7 +21,4 @@
#undef libc_hidden_builtin_def
#define libc_hidden_builtin_def(name)
#undef __bcopy
#define __bcopy __bcopy_power10
#include <sysdeps/powerpc/powerpc64/le/power10/memmove.S>

3
sysdeps/powerpc/powerpc64/multiarch/memmove-power7.S
View File

@ -21,7 +21,4 @@
#undef libc_hidden_builtin_def
#define libc_hidden_builtin_def(name)
#undef __bcopy
#define __bcopy __bcopy_power7
#include <sysdeps/powerpc/powerpc64/power7/memmove.S>

1
sysdeps/powerpc/powerpc64/power7/bcopy.c
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@ -1 +0,0 @@
/* Implemented at memmove.S */

14
sysdeps/powerpc/powerpc64/power7/memmove.S
View File

@ -821,17 +821,3 @@ L(end_unaligned_loop_bwd):
blr
END_GEN_TB (MEMMOVE, TB_TOCLESS)
libc_hidden_builtin_def (memmove)
/* void bcopy(const void *src [r3], void *dest [r4], size_t n [r5])
Implemented in this file to avoid linker create a stub function call
in the branch to '_memmove'. */
ENTRY_TOCLESS (__bcopy)
mr r6,r3
mr r3,r4
mr r4,r6
b L(_memmove)
END (__bcopy)
#ifndef __bcopy
weak_alias (__bcopy, bcopy)
#endif