mempcpy-power7 mempcpy-ppc32 memchr-power7 \
memchr-ppc32 memrchr-power7 memrchr-ppc32 rawmemchr-power7 \
rawmemchr-ppc32 strlen-power7 strlen-ppc32 strnlen-power7 \
- strnlen-ppc32 strncmp-power7 strncmp-ppc32 \
+ strnlen-ppc32 \
strcasecmp-power7 strcasecmp_l-power7 strncase-power7 \
strncase_l-power7 strchrnul-power7 strchrnul-ppc32 \
strchr-power7 strchr-ppc32 \
__strnlen_power7)
IFUNC_IMPL_ADD (array, i, strnlen, 1,
__strnlen_ppc))
-
- /* Support sysdeps/powerpc/powerpc32/multiarch/strncmp.c. */
- IFUNC_IMPL (i, name, strncmp,
- IFUNC_IMPL_ADD (array, i, strncmp, hwcap & PPC_FEATURE_HAS_VSX,
- __strncmp_power7)
- IFUNC_IMPL_ADD (array, i, strncmp, 1,
- __strncmp_ppc))
#endif
/* Support sysdeps/powerpc/powerpc32/power4/multiarch/memcmp.c. */
+++ /dev/null
-/* Optimized strcmp implementation for POWER7/PowerPC32.
- Copyright (C) 2013-2023 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 <sysdep.h>
-
-#undef EALIGN
-#define EALIGN(name, alignt, words) \
- .globl C_SYMBOL_NAME(__strncmp_power7); \
- .type C_SYMBOL_NAME(__strncmp_power7),@function; \
- .align ALIGNARG(alignt); \
- EALIGN_W_##words; \
- C_LABEL(__strncmp_power7) \
- cfi_startproc;
-
-#undef END
-#define END(name) \
- cfi_endproc; \
- ASM_SIZE_DIRECTIVE(__strncmp_power7)
-
-#undef libc_hidden_builtin_def
-#define libc_hidden_builtin_def(name)
-
-#include <sysdeps/powerpc/powerpc32/power7/strncmp.S>
+++ /dev/null
-/* Copyright (C) 2013-2023 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 <sysdep.h>
-
-#if defined SHARED && IS_IN (libc)
-# undef EALIGN
-# define EALIGN(name, alignt, words) \
- .globl C_SYMBOL_NAME(__strncmp_ppc); \
- .type C_SYMBOL_NAME(__strncmp_ppc),@function; \
- .align ALIGNARG(alignt); \
- EALIGN_W_##words; \
- C_LABEL(__strncmp_ppc) \
- cfi_startproc;
-
-# undef END
-# define END(name) \
- cfi_endproc; \
- ASM_SIZE_DIRECTIVE(__strncmp_ppc)
-
-# undef libc_hidden_builtin_def
-# define libc_hidden_builtin_def(name) \
- .globl __GI_strncmp; __GI_strncmp = __strncmp_ppc
-#endif
-
-#include <sysdeps/powerpc/powerpc32/power4/strncmp.S>
+++ /dev/null
-/* Multiple versions of strncmp.
- Copyright (C) 2013-2023 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/>. */
-
-/* Define multiple versions only for definition in libc. */
-#if defined SHARED && IS_IN (libc)
-# define strncmp __redirect_strncmp
-/* Omit the strncmp inline definitions because it would redefine strncmp. */
-# define __NO_STRING_INLINES
-# include <string.h>
-# include <shlib-compat.h>
-# include "init-arch.h"
-
-extern __typeof (strncmp) __strncmp_ppc attribute_hidden;
-extern __typeof (strncmp) __strncmp_power4 attribute_hidden;
-extern __typeof (strncmp) __strncmp_power7 attribute_hidden;
-# undef strncmp
-
-/* Avoid DWARF definition DIE on ifunc symbol so that GDB can handle
- ifunc symbol properly. */
-libc_ifunc_redirected (__redirect_strncmp, strncmp,
- (hwcap & PPC_FEATURE_HAS_VSX)
- ? __strncmp_power7
- : __strncmp_ppc);
-#endif
+++ /dev/null
-/* Optimized strcmp implementation for PowerPC32.
- Copyright (C) 2003-2023 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 <sysdep.h>
-
-/* See strlen.s for comments on how the end-of-string testing works. */
-
-/* int [r3] strncmp (const char *s1 [r3], const char *s2 [r4], size_t size [r5]) */
-
-EALIGN (strncmp, 4, 0)
-
-#define rTMP2 r0
-#define rRTN r3
-#define rSTR1 r3 /* first string arg */
-#define rSTR2 r4 /* second string arg */
-#define rN r5 /* max string length */
-#define rWORD1 r6 /* current word in s1 */
-#define rWORD2 r7 /* current word in s2 */
-#define rWORD3 r10
-#define rWORD4 r11
-#define rFEFE r8 /* constant 0xfefefeff (-0x01010101) */
-#define r7F7F r9 /* constant 0x7f7f7f7f */
-#define rNEG r10 /* ~(word in s1 | 0x7f7f7f7f) */
-#define rBITDIF r11 /* bits that differ in s1 & s2 words */
-#define rTMP r12
-
- dcbt 0,rSTR1
- or rTMP, rSTR2, rSTR1
- lis r7F7F, 0x7f7f
- dcbt 0,rSTR2
- clrlwi. rTMP, rTMP, 30
- cmplwi cr1, rN, 0
- lis rFEFE, -0x101
- bne L(unaligned)
-/* We are word aligned so set up for two loops. first a word
- loop, then fall into the byte loop if any residual. */
- srwi. rTMP, rN, 2
- clrlwi rN, rN, 30
- addi rFEFE, rFEFE, -0x101
- addi r7F7F, r7F7F, 0x7f7f
- cmplwi cr1, rN, 0
- beq L(unaligned)
-
- mtctr rTMP /* Power4 wants mtctr 1st in dispatch group. */
- lwz rWORD1, 0(rSTR1)
- lwz rWORD2, 0(rSTR2)
- b L(g1)
-
-L(g0):
- lwzu rWORD1, 4(rSTR1)
- bne- cr1, L(different)
- lwzu rWORD2, 4(rSTR2)
-L(g1): add rTMP, rFEFE, rWORD1
- nor rNEG, r7F7F, rWORD1
- bdz L(tail)
- and. rTMP, rTMP, rNEG
- cmpw cr1, rWORD1, rWORD2
- beq+ L(g0)
-
-/* OK. We've hit the end of the string. We need to be careful that
- we don't compare two strings as different because of gunk beyond
- the end of the strings... */
-
-#ifdef __LITTLE_ENDIAN__
-L(endstring):
- slwi rTMP, rTMP, 1
- addi rTMP2, rTMP, -1
- andc rTMP2, rTMP2, rTMP
- and rWORD2, rWORD2, rTMP2 /* Mask off gunk. */
- and rWORD1, rWORD1, rTMP2
- rlwinm rTMP2, rWORD2, 8, 0xffffffff /* Byte reverse word. */
- rlwinm rTMP, rWORD1, 8, 0xffffffff
- rldimi rTMP2, rWORD2, 24, 32
- rldimi rTMP, rWORD1, 24, 32
- rlwimi rTMP2, rWORD2, 24, 16, 23
- rlwimi rTMP, rWORD1, 24, 16, 23
- xor. rBITDIF, rTMP, rTMP2
- sub rRTN, rTMP, rTMP2
- bgelr+
- ori rRTN, rTMP2, 1
- blr
-
-L(different):
- lwz rWORD1, -4(rSTR1)
- rlwinm rTMP2, rWORD2, 8, 0xffffffff /* Byte reverse word. */
- rlwinm rTMP, rWORD1, 8, 0xffffffff
- rldimi rTMP2, rWORD2, 24, 32
- rldimi rTMP, rWORD1, 24, 32
- rlwimi rTMP2, rWORD2, 24, 16, 23
- rlwimi rTMP, rWORD1, 24, 16, 23
- xor. rBITDIF, rTMP, rTMP2
- sub rRTN, rTMP, rTMP2
- bgelr+
- ori rRTN, rTMP2, 1
- blr
-
-#else
-L(endstring):
- and rTMP, r7F7F, rWORD1
- beq cr1, L(equal)
- add rTMP, rTMP, r7F7F
- xor. rBITDIF, rWORD1, rWORD2
- andc rNEG, rNEG, rTMP
- blt- L(highbit)
- cntlzw rBITDIF, rBITDIF
- cntlzw rNEG, rNEG
- addi rNEG, rNEG, 7
- cmpw cr1, rNEG, rBITDIF
- sub rRTN, rWORD1, rWORD2
- bgelr+ cr1
-L(equal):
- li rRTN, 0
- blr
-
-L(different):
- lwz rWORD1, -4(rSTR1)
- xor. rBITDIF, rWORD1, rWORD2
- sub rRTN, rWORD1, rWORD2
- bgelr+
-L(highbit):
- ori rRTN, rWORD2, 1
- blr
-#endif
-
-/* Oh well. In this case, we just do a byte-by-byte comparison. */
- .align 4
-L(tail):
- and. rTMP, rTMP, rNEG
- cmpw cr1, rWORD1, rWORD2
- bne- L(endstring)
- addi rSTR1, rSTR1, 4
- bne- cr1, L(different)
- addi rSTR2, rSTR2, 4
- cmplwi cr1, rN, 0
-L(unaligned):
- mtctr rN /* Power4 wants mtctr 1st in dispatch group */
- ble cr1, L(ux)
-L(uz):
- lbz rWORD1, 0(rSTR1)
- lbz rWORD2, 0(rSTR2)
- .align 4
-L(u1):
- cmpwi cr1, rWORD1, 0
- bdz L(u4)
- cmpw rWORD1, rWORD2
- beq- cr1, L(u4)
- bne- L(u4)
- lbzu rWORD3, 1(rSTR1)
- lbzu rWORD4, 1(rSTR2)
- cmpwi cr1, rWORD3, 0
- bdz L(u3)
- cmpw rWORD3, rWORD4
- beq- cr1, L(u3)
- bne- L(u3)
- lbzu rWORD1, 1(rSTR1)
- lbzu rWORD2, 1(rSTR2)
- cmpwi cr1, rWORD1, 0
- bdz L(u4)
- cmpw rWORD1, rWORD2
- beq- cr1, L(u4)
- bne- L(u4)
- lbzu rWORD3, 1(rSTR1)
- lbzu rWORD4, 1(rSTR2)
- cmpwi cr1, rWORD3, 0
- bdz L(u3)
- cmpw rWORD3, rWORD4
- beq- cr1, L(u3)
- bne- L(u3)
- lbzu rWORD1, 1(rSTR1)
- lbzu rWORD2, 1(rSTR2)
- b L(u1)
-
-L(u3): sub rRTN, rWORD3, rWORD4
- blr
-L(u4): sub rRTN, rWORD1, rWORD2
- blr
-L(ux):
- li rRTN, 0
- blr
-END (strncmp)
-libc_hidden_builtin_def (strncmp)
+++ /dev/null
-/* Optimized strcmp implementation for POWER7/PowerPC32.
- Copyright (C) 2010-2023 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 <sysdep.h>
-
-/* See strlen.s for comments on how the end-of-string testing works. */
-
-/* int [r3] strncmp (const char *s1 [r3],
- const char *s2 [r4],
- size_t size [r5]) */
-
-EALIGN (strncmp,5,0)
-
-#define rTMP2 r0
-#define rRTN r3
-#define rSTR1 r3 /* first string arg */
-#define rSTR2 r4 /* second string arg */
-#define rN r5 /* max string length */
-#define rWORD1 r6 /* current word in s1 */
-#define rWORD2 r7 /* current word in s2 */
-#define rWORD3 r10
-#define rWORD4 r11
-#define rFEFE r8 /* constant 0xfefefeff (-0x01010101) */
-#define r7F7F r9 /* constant 0x7f7f7f7f */
-#define rNEG r10 /* ~(word in s1 | 0x7f7f7f7f) */
-#define rBITDIF r11 /* bits that differ in s1 & s2 words */
-#define rTMP r12
-
- dcbt 0,rSTR1
- nop
- or rTMP,rSTR2,rSTR1
- lis r7F7F,0x7f7f
- dcbt 0,rSTR2
- nop
- clrlwi. rTMP,rTMP,30
- cmplwi cr1,rN,0
- lis rFEFE,-0x101
- bne L(unaligned)
-/* We are word aligned so set up for two loops. first a word
- loop, then fall into the byte loop if any residual. */
- srwi. rTMP,rN,2
- clrlwi rN,rN,30
- addi rFEFE,rFEFE,-0x101
- addi r7F7F,r7F7F,0x7f7f
- cmplwi cr1,rN,0
- beq L(unaligned)
-
- mtctr rTMP
- lwz rWORD1,0(rSTR1)
- lwz rWORD2,0(rSTR2)
- b L(g1)
-
-L(g0):
- lwzu rWORD1,4(rSTR1)
- bne cr1,L(different)
- lwzu rWORD2,4(rSTR2)
-L(g1): add rTMP,rFEFE,rWORD1
- nor rNEG,r7F7F,rWORD1
- bdz L(tail)
- and. rTMP,rTMP,rNEG
- cmpw cr1,rWORD1,rWORD2
- beq L(g0)
-
-/* OK. We've hit the end of the string. We need to be careful that
- we don't compare two strings as different because of gunk beyond
- the end of the strings... */
-#ifdef __LITTLE_ENDIAN__
-L(endstring):
- slwi rTMP, rTMP, 1
- addi rTMP2, rTMP, -1
- andc rTMP2, rTMP2, rTMP
- and rWORD2, rWORD2, rTMP2 /* Mask off gunk. */
- and rWORD1, rWORD1, rTMP2
- rlwinm rTMP2, rWORD2, 8, 0xffffffff /* Byte reverse word. */
- rlwinm rTMP, rWORD1, 8, 0xffffffff
- rldimi rTMP2, rWORD2, 24, 32
- rldimi rTMP, rWORD1, 24, 32
- rlwimi rTMP2, rWORD2, 24, 16, 23
- rlwimi rTMP, rWORD1, 24, 16, 23
- xor. rBITDIF, rTMP, rTMP2
- sub rRTN, rTMP, rTMP2
- bgelr
- ori rRTN, rTMP2, 1
- blr
-
-L(different):
- lwz rWORD1, -4(rSTR1)
- rlwinm rTMP2, rWORD2, 8, 0xffffffff /* Byte reverse word. */
- rlwinm rTMP, rWORD1, 8, 0xffffffff
- rldimi rTMP2, rWORD2, 24, 32
- rldimi rTMP, rWORD1, 24, 32
- rlwimi rTMP2, rWORD2, 24, 16, 23
- rlwimi rTMP, rWORD1, 24, 16, 23
- xor. rBITDIF, rTMP, rTMP2
- sub rRTN, rTMP, rTMP2
- bgelr
- ori rRTN, rTMP2, 1
- blr
-
-#else
-L(endstring):
- and rTMP,r7F7F,rWORD1
- beq cr1,L(equal)
- add rTMP,rTMP,r7F7F
- xor. rBITDIF,rWORD1,rWORD2
- andc rNEG,rNEG,rTMP
- blt L(highbit)
- cntlzw rBITDIF,rBITDIF
- cntlzw rNEG,rNEG
- addi rNEG,rNEG,7
- cmpw cr1,rNEG,rBITDIF
- sub rRTN,rWORD1,rWORD2
- bgelr cr1
-L(equal):
- li rRTN,0
- blr
-
-L(different):
- lwz rWORD1,-4(rSTR1)
- xor. rBITDIF,rWORD1,rWORD2
- sub rRTN,rWORD1,rWORD2
- bgelr
-L(highbit):
- ori rRTN, rWORD2, 1
- blr
-#endif
-
-/* Oh well. In this case, we just do a byte-by-byte comparison. */
- .align 4
-L(tail):
- and. rTMP,rTMP,rNEG
- cmpw cr1,rWORD1,rWORD2
- bne L(endstring)
- addi rSTR1,rSTR1,4
- bne cr1,L(different)
- addi rSTR2,rSTR2,4
- cmplwi cr1,rN,0
-L(unaligned):
- mtctr rN
- ble cr1,L(ux)
-L(uz):
- lbz rWORD1,0(rSTR1)
- lbz rWORD2,0(rSTR2)
- .align 4
-L(u1):
- cmpwi cr1,rWORD1,0
- bdz L(u4)
- cmpw rWORD1,rWORD2
- beq cr1,L(u4)
- bne L(u4)
- lbzu rWORD3,1(rSTR1)
- lbzu rWORD4,1(rSTR2)
- cmpwi cr1,rWORD3,0
- bdz L(u3)
- cmpw rWORD3,rWORD4
- beq cr1,L(u3)
- bne L(u3)
- lbzu rWORD1,1(rSTR1)
- lbzu rWORD2,1(rSTR2)
- cmpwi cr1,rWORD1,0
- bdz L(u4)
- cmpw rWORD1,rWORD2
- beq cr1,L(u4)
- bne L(u4)
- lbzu rWORD3,1(rSTR1)
- lbzu rWORD4,1(rSTR2)
- cmpwi cr1,rWORD3,0
- bdz L(u3)
- cmpw rWORD3,rWORD4
- beq cr1,L(u3)
- bne L(u3)
- lbzu rWORD1,1(rSTR1)
- lbzu rWORD2,1(rSTR2)
- b L(u1)
-
-L(u3): sub rRTN,rWORD3,rWORD4
- blr
-L(u4): sub rRTN,rWORD1,rWORD2
- blr
-L(ux):
- li rRTN,0
- blr
-END (strncmp)
-libc_hidden_builtin_def (strncmp)
+++ /dev/null
-/* Optimized strcmp implementation for PowerPC32.
- Copyright (C) 2003-2023 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 <sysdep.h>
-
-/* See strlen.s for comments on how the end-of-string testing works. */
-
-/* int [r3] strncmp (const char *s1 [r3], const char *s2 [r4], size_t size [r5]) */
-
-EALIGN (strncmp, 4, 0)
-
-#define rTMP2 r0
-#define rRTN r3
-#define rSTR1 r3 /* first string arg */
-#define rSTR2 r4 /* second string arg */
-#define rN r5 /* max string length */
-#define rWORD1 r6 /* current word in s1 */
-#define rWORD2 r7 /* current word in s2 */
-#define rFEFE r8 /* constant 0xfefefeff (-0x01010101) */
-#define r7F7F r9 /* constant 0x7f7f7f7f */
-#define rNEG r10 /* ~(word in s1 | 0x7f7f7f7f) */
-#define rBITDIF r11 /* bits that differ in s1 & s2 words */
-#define rTMP r12
-
- dcbt 0,rSTR1
- or rTMP, rSTR2, rSTR1
- lis r7F7F, 0x7f7f
- dcbt 0,rSTR2
- clrlwi. rTMP, rTMP, 30
- cmplwi cr1, rN, 0
- lis rFEFE, -0x101
- bne L(unaligned)
-/* We are word aligned so set up for two loops. first a word
- loop, then fall into the byte loop if any residual. */
- srwi. rTMP, rN, 2
- clrlwi rN, rN, 30
- addi rFEFE, rFEFE, -0x101
- addi r7F7F, r7F7F, 0x7f7f
- cmplwi cr1, rN, 0
- beq L(unaligned)
-
- mtctr rTMP /* Power4 wants mtctr 1st in dispatch group. */
- lwz rWORD1, 0(rSTR1)
- lwz rWORD2, 0(rSTR2)
- b L(g1)
-
-L(g0):
- lwzu rWORD1, 4(rSTR1)
- bne- cr1, L(different)
- lwzu rWORD2, 4(rSTR2)
-L(g1): add rTMP, rFEFE, rWORD1
- nor rNEG, r7F7F, rWORD1
- bdz L(tail)
- and. rTMP, rTMP, rNEG
- cmpw cr1, rWORD1, rWORD2
- beq+ L(g0)
-
-/* OK. We've hit the end of the string. We need to be careful that
- we don't compare two strings as different because of gunk beyond
- the end of the strings... */
-
-#ifdef __LITTLE_ENDIAN__
-L(endstring):
- slwi rTMP, rTMP, 1
- addi rTMP2, rTMP, -1
- andc rTMP2, rTMP2, rTMP
- and rWORD2, rWORD2, rTMP2 /* Mask off gunk. */
- and rWORD1, rWORD1, rTMP2
- rlwinm rTMP2, rWORD2, 8, 0xffffffff /* Byte reverse word. */
- rlwinm rTMP, rWORD1, 8, 0xffffffff
- rlwimi rTMP2, rWORD2, 24, 0, 7
- rlwimi rTMP, rWORD1, 24, 0, 7
- rlwimi rTMP2, rWORD2, 24, 16, 23
- rlwimi rTMP, rWORD1, 24, 16, 23
- xor. rBITDIF, rTMP, rTMP2
- sub rRTN, rTMP, rTMP2
- bgelr+
- ori rRTN, rTMP2, 1
- blr
-
-L(different):
- lwz rWORD1, -4(rSTR1)
- rlwinm rTMP2, rWORD2, 8, 0xffffffff /* Byte reverse word. */
- rlwinm rTMP, rWORD1, 8, 0xffffffff
- rlwimi rTMP2, rWORD2, 24, 0, 7
- rlwimi rTMP, rWORD1, 24, 0, 7
- rlwimi rTMP2, rWORD2, 24, 16, 23
- rlwimi rTMP, rWORD1, 24, 16, 23
- xor. rBITDIF, rTMP, rTMP2
- sub rRTN, rTMP, rTMP2
- bgelr+
- ori rRTN, rTMP2, 1
- blr
-
-#else
-L(endstring):
- and rTMP, r7F7F, rWORD1
- beq cr1, L(equal)
- add rTMP, rTMP, r7F7F
- xor. rBITDIF, rWORD1, rWORD2
- andc rNEG, rNEG, rTMP
- blt- L(highbit)
- cntlzw rBITDIF, rBITDIF
- cntlzw rNEG, rNEG
- addi rNEG, rNEG, 7
- cmpw cr1, rNEG, rBITDIF
- sub rRTN, rWORD1, rWORD2
- bgelr+ cr1
-L(equal):
- li rRTN, 0
- blr
-
-L(different):
- lwz rWORD1, -4(rSTR1)
- xor. rBITDIF, rWORD1, rWORD2
- sub rRTN, rWORD1, rWORD2
- bgelr+
-L(highbit):
- ori rRTN, rWORD2, 1
- blr
-#endif
-
-/* Oh well. In this case, we just do a byte-by-byte comparison. */
- .align 4
-L(tail):
- and. rTMP, rTMP, rNEG
- cmpw cr1, rWORD1, rWORD2
- bne- L(endstring)
- addi rSTR1, rSTR1, 4
- bne- cr1, L(different)
- addi rSTR2, rSTR2, 4
- cmplwi cr1, rN, 0
-L(unaligned):
- mtctr rN /* Power4 wants mtctr 1st in dispatch group */
- bgt cr1, L(uz)
-L(ux):
- li rRTN, 0
- blr
- .align 4
-L(uz):
- lbz rWORD1, 0(rSTR1)
- lbz rWORD2, 0(rSTR2)
- nop
- b L(u1)
-L(u0):
- lbzu rWORD2, 1(rSTR2)
-L(u1):
- bdz L(u3)
- cmpwi cr1, rWORD1, 0
- cmpw rWORD1, rWORD2
- beq- cr1, L(u3)
- lbzu rWORD1, 1(rSTR1)
- bne- L(u2)
- lbzu rWORD2, 1(rSTR2)
- bdz L(u3)
- cmpwi cr1, rWORD1, 0
- cmpw rWORD1, rWORD2
- bne- L(u3)
- lbzu rWORD1, 1(rSTR1)
- bne+ cr1, L(u0)
-
-L(u2): lbzu rWORD1, -1(rSTR1)
-L(u3): sub rRTN, rWORD1, rWORD2
- blr
-END (strncmp)
-libc_hidden_builtin_def (strncmp)
projects / thirdparty / glibc.git / commitdiff
