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sparc: Remove bzero optimization
The symbol is not present in current POSIX specification and compiler already generates memset call.
This commit is contained in:
Adhemerval Zanella
parent
c0d215f162
commit
a61933fe27
@ -1 +0,0 @@
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/* bzero is in memset.S */
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@ -42,25 +42,6 @@
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.text
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.align 4
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ENTRY(__bzero)
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b 1f
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mov %g0, %g3
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3: cmp %o2, 3
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be 2f
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stb %g3, [%o0]
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cmp %o2, 2
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be 2f
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stb %g3, [%o0 + 0x01]
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stb %g3, [%o0 + 0x02]
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2: sub %o2, 4, %o2
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add %o1, %o2, %o1
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b 4f
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sub %o0, %o2, %o0
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END(__bzero)
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ENTRY(memset)
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and %o1, 0xff, %g3
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sll %g3, 8, %g2
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@ -73,7 +54,7 @@ ENTRY(memset)
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mov %o0, %g1
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andcc %o0, 3, %o2
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bne 3b
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bne 3f
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4: andcc %o0, 4, %g0
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be 2f
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@ -146,7 +127,19 @@ ENTRY(memset)
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stb %g3, [%o0 + 6]
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0: retl
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nop
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3: cmp %o2, 3
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be 2f
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stb %g3, [%o0]
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cmp %o2, 2
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be 2f
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stb %g3, [%o0 + 0x01]
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stb %g3, [%o0 + 0x02]
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2: sub %o2, 4, %o2
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add %o1, %o2, %o1
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b 4b
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sub %o0, %o2, %o0
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END(memset)
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libc_hidden_builtin_def (memset)
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weak_alias (__bzero, bzero)
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@ -1 +0,0 @@
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/* bzero is in memset.S */
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@ -1 +0,0 @@
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#include <sysdeps/sparc/sparc64/multiarch/bzero.c>
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@ -25,6 +25,5 @@
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# define weak_alias(x, y)
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# define memset __memset_ultra1
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# define __bzero __bzero_ultra1
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# include <sysdeps/sparc/sparc32/sparcv9/memset.S>
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#endif
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@ -1 +0,0 @@
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/* bzero is in memset.S */
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@ -31,6 +31,16 @@
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stx source, [base - offset - 0x08]; \
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stx source, [base - offset - 0x00];
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#define ZERO_BLOCKS(base, offset, source) \
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stx source, [base - offset - 0x38]; \
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stx source, [base - offset - 0x30]; \
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stx source, [base - offset - 0x28]; \
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stx source, [base - offset - 0x20]; \
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stx source, [base - offset - 0x18]; \
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stx source, [base - offset - 0x10]; \
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stx source, [base - offset - 0x08]; \
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stx source, [base - offset - 0x00];
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/* Well, memset is a lot easier to get right than bcopy... */
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.text
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.align 32
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@ -174,22 +184,7 @@ ENTRY(memset)
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nop
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ba,pt %xcc, 18b
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ldd [%o0], %f0
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END(memset)
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libc_hidden_builtin_def (memset)
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#define ZERO_BLOCKS(base, offset, source) \
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stx source, [base - offset - 0x38]; \
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stx source, [base - offset - 0x30]; \
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stx source, [base - offset - 0x28]; \
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stx source, [base - offset - 0x20]; \
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stx source, [base - offset - 0x18]; \
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stx source, [base - offset - 0x10]; \
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stx source, [base - offset - 0x08]; \
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stx source, [base - offset - 0x00];
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.text
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.align 32
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ENTRY(__bzero)
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#ifndef USE_BPR
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srl %o1, 0, %o1
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#endif
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@ -307,6 +302,5 @@ ENTRY(__bzero)
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stb %g0, [%o0 - 1]
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0: retl
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mov %o5, %o0
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END(__bzero)
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weak_alias (__bzero, bzero)
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END(memset)
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libc_hidden_builtin_def (memset)
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@ -1,33 +0,0 @@
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/* Multiple versions of bzero. SPARC64/Linux version.
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All versions must be listed in ifunc-impl-list.c.
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Copyright (C) 2017-2022 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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#if IS_IN (libc)
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# define bzero __redirect_bzero
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# include <string.h>
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# undef bzero
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# include <sparc-ifunc.h>
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# define SYMBOL_NAME bzero
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# include "ifunc-memset.h"
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sparc_libc_ifunc_redirected (__redirect_bzero, __bzero, IFUNC_SELECTOR)
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weak_alias (__bzero, bzero)
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#endif
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@ -61,15 +61,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
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__mempcpy_ultra3)
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IFUNC_IMPL_ADD (array, i, mempcpy, 1, __mempcpy_ultra1));
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IFUNC_IMPL (i, name, bzero,
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IFUNC_IMPL_ADD (array, i, bzero, hwcap & HWCAP_SPARC_ADP,
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__bzero_niagara7)
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IFUNC_IMPL_ADD (array, i, bzero, hwcap & HWCAP_SPARC_CRYPTO,
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__bzero_niagara4)
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IFUNC_IMPL_ADD (array, i, bzero, hwcap & HWCAP_SPARC_BLKINIT,
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__bzero_niagara1)
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IFUNC_IMPL_ADD (array, i, bzero, 1, __bzero_ultra1));
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IFUNC_IMPL (i, name, memset,
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IFUNC_IMPL_ADD (array, i, memset, hwcap & HWCAP_SPARC_ADP,
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__memset_niagara7)
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@ -1,4 +1,4 @@
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/* Common definition for memset/bzero implementation.
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/* Common definition for memset implementation.
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All versions must be listed in ifunc-impl-list.c.
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Copyright (C) 2017-2022 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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@ -45,9 +45,6 @@ ENTRY(__memset_niagara1)
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sllx %o2, 32, %g1
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ba,pt %XCC, 1f
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or %g1, %o2, %o2
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END(__memset_niagara1)
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ENTRY(__bzero_niagara1)
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clr %o2
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1:
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# ifndef USE_BRP
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@ -171,6 +168,6 @@ ENTRY(__bzero_niagara1)
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90:
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retl
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mov %o3, %o0
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END(__bzero_niagara1)
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END(__memset_niagara1)
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#endif
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@ -39,10 +39,6 @@ ENTRY(__memset_niagara4)
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sllx %o2, 32, %g1
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ba,pt %icc, 1f
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or %g1, %o2, %o4
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END(__memset_niagara4)
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.align 32
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ENTRY(__bzero_niagara4)
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clr %o4
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1: cmp %o1, 16
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ble %icc, .Ltiny
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@ -118,6 +114,6 @@ ENTRY(__bzero_niagara4)
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bne,pt %icc, 1b
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add %o0, 0x30, %o0
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ba,a,pt %icc, .Lpostloop
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END(__bzero_niagara4)
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END(__memset_niagara4)
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#endif
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@ -99,13 +99,6 @@
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.text
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.align 32
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ENTRY(__bzero_niagara7)
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/* bzero (dst, size) */
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mov %o1, %o2
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mov 0, %o1
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/* fall through into memset code */
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END(__bzero_niagara7)
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ENTRY(__memset_niagara7)
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/* memset (src, c, size) */
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mov %o0, %o5 /* copy sp1 before using it */
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@ -25,6 +25,5 @@
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# define weak_alias(x, y)
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# define memset __memset_ultra1
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# define __bzero __bzero_ultra1
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# include <sysdeps/sparc/sparc64/memset.S>
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#endif
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