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powerpc: Remove powerpc64 bzero optimizations
The symbol is not present in current POSIX specification and compiler already generates memset call.
This commit is contained in:
Adhemerval Zanella
parent
68122d8a04
commit
4e81019f30
@ -1,20 +0,0 @@
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/* Optimized bzero `implementation' for PowerPC64.
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Copyright (C) 1997-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* This code was moved into memset.S to solve a double stub call problem.
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@local would have worked but it is not supported in PowerPC64 asm. */
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@ -242,15 +242,3 @@ L(bcdz_tail):
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END_GEN_TB (MEMSET,TB_TOCLESS)
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libc_hidden_builtin_def (memset)
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/* Copied from bzero.S to prevent the linker from inserting a stub
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between bzero and memset. */
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ENTRY_TOCLESS (__bzero)
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CALL_MCOUNT 2
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mr r5,r4
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li r4,0
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b L(_memset)
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END (__bzero)
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#ifndef __bzero
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weak_alias (__bzero, bzero)
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#endif
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@ -253,16 +253,3 @@ L(medium_28t):
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blr
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END_GEN_TB (MEMSET,TB_TOCLESS)
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libc_hidden_builtin_def (memset)
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#ifndef NO_BZERO_IMPL
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/* Copied from bzero.S to prevent the linker from inserting a stub
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between bzero and memset. */
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ENTRY (__bzero)
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CALL_MCOUNT 3
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mr r5,r4
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li r4,0
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b L(_memset)
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END_GEN_TB (__bzero,TB_TOCLESS)
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weak_alias (__bzero, bzero)
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#endif
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@ -1,54 +0,0 @@
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/* Multiple versions of bzero. PowerPC64 version.
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Copyright (C) 2013-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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/* Define multiple versions only for definition in libc. */
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#if IS_IN (libc)
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# include <string.h>
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# include <strings.h>
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# include "init-arch.h"
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extern __typeof (bzero) __bzero_ppc attribute_hidden;
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extern __typeof (bzero) __bzero_power4 attribute_hidden;
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extern __typeof (bzero) __bzero_power6 attribute_hidden;
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extern __typeof (bzero) __bzero_power7 attribute_hidden;
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extern __typeof (bzero) __bzero_power8 attribute_hidden;
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# ifdef __LITTLE_ENDIAN__
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extern __typeof (bzero) __bzero_power10 attribute_hidden;
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# endif
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libc_ifunc (__bzero,
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# ifdef __LITTLE_ENDIAN__
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(hwcap2 & PPC_FEATURE2_ARCH_3_1
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&& hwcap2 & PPC_FEATURE2_HAS_ISEL
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&& hwcap & PPC_FEATURE_HAS_VSX)
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? __bzero_power10 :
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# endif
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(hwcap2 & PPC_FEATURE2_ARCH_2_07
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&& hwcap & PPC_FEATURE_HAS_ALTIVEC)
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? __bzero_power8 :
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(hwcap & PPC_FEATURE_HAS_VSX)
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? __bzero_power7 :
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(hwcap & PPC_FEATURE_ARCH_2_05
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&& hwcap & PPC_FEATURE_HAS_ALTIVEC)
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? __bzero_power6 :
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(hwcap & PPC_FEATURE_POWER4)
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? __bzero_power4
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: __bzero_ppc);
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weak_alias (__bzero, bzero)
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#endif
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@ -223,27 +223,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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__memcmp_power4)
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IFUNC_IMPL_ADD (array, i, memcmp, 1, __memcmp_ppc))
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/* Support sysdeps/powerpc/powerpc64/multiarch/bzero.c. */
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IFUNC_IMPL (i, name, bzero,
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#ifdef __LITTLE_ENDIAN__
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IFUNC_IMPL_ADD (array, i, bzero,
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hwcap2 & PPC_FEATURE2_ARCH_3_1
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&& hwcap2 & PPC_FEATURE2_HAS_ISEL
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&& hwcap & PPC_FEATURE_HAS_VSX,
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__bzero_power10)
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#endif
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IFUNC_IMPL_ADD (array, i, bzero, hwcap2 & PPC_FEATURE2_ARCH_2_07
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&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
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__bzero_power8)
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IFUNC_IMPL_ADD (array, i, bzero, hwcap & PPC_FEATURE_HAS_VSX,
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__bzero_power7)
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IFUNC_IMPL_ADD (array, i, bzero, hwcap & PPC_FEATURE_ARCH_2_05
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&& hwcap & PPC_FEATURE_HAS_ALTIVEC,
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__bzero_power6)
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IFUNC_IMPL_ADD (array, i, bzero, hwcap & PPC_FEATURE_POWER4,
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__bzero_power4)
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IFUNC_IMPL_ADD (array, i, bzero, 1, __bzero_ppc))
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/* Support sysdeps/powerpc/powerpc64/multiarch/mempcpy.c. */
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IFUNC_IMPL (i, name, mempcpy,
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IFUNC_IMPL_ADD (array, i, mempcpy,
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@ -21,7 +21,4 @@
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#undef libc_hidden_builtin_def
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#define libc_hidden_builtin_def(name)
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#undef __bzero
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#define __bzero __bzero_power10
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#include <sysdeps/powerpc/powerpc64/le/power10/memset.S>
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@ -21,7 +21,4 @@
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#undef libc_hidden_builtin_def
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#define libc_hidden_builtin_def(name)
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#undef __bzero
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#define __bzero __bzero_power4
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#include <sysdeps/powerpc/powerpc64/power4/memset.S>
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@ -21,7 +21,4 @@
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#undef libc_hidden_builtin_def
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#define libc_hidden_builtin_def(name)
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#undef __bzero
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#define __bzero __bzero_power6
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#include <sysdeps/powerpc/powerpc64/power6/memset.S>
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@ -21,6 +21,4 @@
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#undef libc_hidden_builtin_def
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#define libc_hidden_builtin_def(name)
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#undef __bzero
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#define __bzero __bzero_power7
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#include <sysdeps/powerpc/powerpc64/power7/memset.S>
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@ -21,7 +21,4 @@
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#undef libc_hidden_builtin_def
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#define libc_hidden_builtin_def(name)
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#undef __bzero
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#define __bzero __bzero_power8
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#include <sysdeps/powerpc/powerpc64/power8/memset.S>
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@ -1,4 +1,4 @@
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/* Default memset/bzero implementation for PowerPC64.
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/* Default memset implementation for PowerPC64.
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Copyright (C) 2013-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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@ -18,17 +18,6 @@
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#include <sysdep.h>
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/* Copied from bzero.S to prevent the linker from inserting a stub
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between bzero and memset. NOTE: this code should be positioned
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before ENTRY/END_GEN_TB redefinition. */
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ENTRY (__bzero_ppc)
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CALL_MCOUNT 3
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mr r5,r4
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li r4,0
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b L(_memset)
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END_GEN_TB (__bzero_ppc,TB_TOCLESS)
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#if defined SHARED && IS_IN (libc)
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# define MEMSET __memset_ppc
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@ -36,7 +25,4 @@ END_GEN_TB (__bzero_ppc,TB_TOCLESS)
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# define libc_hidden_builtin_def(name)
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#endif
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/* Do not implement __bzero at powerpc64/memset.S. */
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#define NO_BZERO_IMPL
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#include <sysdeps/powerpc/powerpc64/memset.S>
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@ -237,15 +237,3 @@ L(medium_28t):
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blr
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END_GEN_TB (MEMSET,TB_TOCLESS)
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libc_hidden_builtin_def (memset)
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/* Copied from bzero.S to prevent the linker from inserting a stub
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between bzero and memset. */
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ENTRY_TOCLESS (__bzero)
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CALL_MCOUNT 3
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mr r5,r4
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li r4,0
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b L(_memset)
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END (__bzero)
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#ifndef __bzero
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weak_alias (__bzero, bzero)
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#endif
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@ -381,15 +381,3 @@ L(medium_28t):
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blr
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END_GEN_TB (MEMSET,TB_TOCLESS)
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libc_hidden_builtin_def (memset)
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/* Copied from bzero.S to prevent the linker from inserting a stub
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between bzero and memset. */
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ENTRY_TOCLESS (__bzero)
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CALL_MCOUNT 3
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mr r5,r4
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li r4,0
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b L(_memset)
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END (__bzero)
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#ifndef __bzero
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weak_alias (__bzero, bzero)
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#endif
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@ -384,15 +384,3 @@ L(small):
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END_GEN_TB (MEMSET,TB_TOCLESS)
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libc_hidden_builtin_def (memset)
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/* Copied from bzero.S to prevent the linker from inserting a stub
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between bzero and memset. */
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ENTRY_TOCLESS (__bzero)
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CALL_MCOUNT 3
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mr r5,r4
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li r4,0
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b L(_memset)
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END (__bzero)
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#ifndef __bzero
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weak_alias (__bzero, bzero)
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#endif
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@ -504,15 +504,3 @@ L(LE7_tail5):
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END_GEN_TB (MEMSET,TB_TOCLESS)
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libc_hidden_builtin_def (memset)
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/* Copied from bzero.S to prevent the linker from inserting a stub
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between bzero and memset. */
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ENTRY_TOCLESS (__bzero)
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CALL_MCOUNT 3
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mr r5,r4
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li r4,0
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b L(_memset)
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END (__bzero)
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#ifndef __bzero
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weak_alias (__bzero, bzero)
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#endif
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