diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc64/strpbrk.S')
-rw-r--r-- | sysdeps/powerpc/powerpc64/strpbrk.S | 135 |
1 files changed, 0 insertions, 135 deletions
diff --git a/sysdeps/powerpc/powerpc64/strpbrk.S b/sysdeps/powerpc/powerpc64/strpbrk.S deleted file mode 100644 index 5e9d1a6..0000000 --- a/sysdeps/powerpc/powerpc64/strpbrk.S +++ /dev/null @@ -1,135 +0,0 @@ -/* Optimized strpbrk implementation for PowerPC64. - Copyright (C) 2014-2016 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 - <http://www.gnu.org/licenses/>. */ - -#include <sysdep.h> - -/* char [r3] *strpbrk(const char [r4] *s, const char [r5] *accept) */ - -EALIGN (strpbrk, 4, 0) - CALL_MCOUNT 3 - - lbz r10,0(r4) - cmpdi cr7,r10,0 /* accept[0] == '\0' ? */ - beq cr7,L(nullfound) - - /* The idea to speed up the algorithm is to create a lookup table - for fast check if input character should be considered. For ASCII - or ISO-8859-X character sets it has 256 positions. */ - - /* PPC64 ELF ABI stack is aligned to 16 bytes. */ - addi r9,r1,-256 - /* Clear the table with 0 values */ - li r6, 0 - li r7, 4 - mtctr r7 - mr r8, r9 - .align 4 -L(zerohash): - std r6, 0(r8) - std r6, 8(r8) - std r6, 16(r8) - std r6, 24(r8) - std r6, 32(r8) - std r6, 40(r8) - std r6, 48(r8) - std r6, 56(r8) - addi r8, r8, 64 - bdnz L(zerohash) - - /* Initialize the table as: - for (i=0; accept[i]; i++ - table[accept[i]]] = 1 */ - li r0,1 - .align 4 -L(init_table): - stbx r0,r9,r10 - lbzu r10,1(r4) - cmpdi r0,r10,0 - bne cr0,L(init_table) -L(finish_table): - /* set table[0] = 1 */ - li r4,1 - stb r4,0(r9) - b L(mainloop) - - /* Unrool the loop 4 times and check using the table as: - i = 0; - while (1) - { - if (table[input[i++]] == 1) - return (s[i -1] ? s + i - 1: NULL); - if (table[input[i++]] == 1) - return (s[i -1] ? s + i - 1: NULL); - if (table[input[i++]] == 1) - return (s[i -1] ? s + i - 1: NULL); - if (table[input[i++]] == 1) - return (s[i -1] ? s + i - 1: NULL); - } */ - .align 4 -L(unroll): - lbz r0,1(r3) - lbzx r8,r9,r0 - cmpwi cr6,r8,1 - beq cr6,L(checkend2) - lbz r10,2(r3) - lbzx r4,r9,r10 - cmpwi cr7,r4,1 - beq cr7,L(checkend3) - lbz r12,3(r3) - addi r3,r3,4 - lbzx r11,r9,r12 - cmpwi cr0,r11,1 - beq cr0,L(checkend) -L(mainloop): - lbz r12,0(r3) - addi r11,r3,1 - addi r5,r3,2 - addi r7,r3,3 - lbzx r6,r9,r12 - cmpwi cr1,r6,1 - bne cr1,L(unroll) - cmpdi cr0,r12,0 - beq cr0,L(nullfound) -L(end): - blr - - .align 4 -L(checkend): - cmpdi cr1,r12,0 - mr r3,r7 - bne cr1,L(end) -L(nullfound): - /* return NULL */ - li 3,0 - blr - - .align 4 -L(checkend2): - cmpdi cr7,r0,0 - mr r3,r11 - beq cr7,L(nullfound) - blr - - .align 4 -L(checkend3): - cmpdi cr6,r10,0 - mr r3,r5 - beq cr6,L(nullfound) - blr -END (strpbrk) -libc_hidden_builtin_def (strpbrk) |