diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc64/strcspn.S')
-rw-r--r-- | sysdeps/powerpc/powerpc64/strcspn.S | 127 |
1 files changed, 0 insertions, 127 deletions
diff --git a/sysdeps/powerpc/powerpc64/strcspn.S b/sysdeps/powerpc/powerpc64/strcspn.S deleted file mode 100644 index 31e619d..0000000 --- a/sysdeps/powerpc/powerpc64/strcspn.S +++ /dev/null @@ -1,127 +0,0 @@ -/* Optimized strcspn 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> - -/* size_t [r3] strcspn (const char [r4] *s, const char [r5] *reject) */ - -EALIGN (strcspn, 4, 0) - CALL_MCOUNT 3 - - /* 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 r8, 4 - mtctr r8 - mr r10, r9 - .align 4 -L(zerohash): - std r6, 0(r10) - std r6, 8(r10) - std r6, 16(r10) - std r6, 24(r10) - std r6, 32(r10) - std r6, 40(r10) - std r6, 48(r10) - std r6, 56(r10) - addi r10, r10, 64 - bdnz L(zerohash) - - lbz r10,0(r4) - cmpdi cr7,r10,0 /* reject[0] == '\0' ? */ - li r8,1 - beq cr7,L(finish_table) /* If reject[0] == '\0' skip */ - - /* Initialize the table as: - for (i=0; reject[i]; i++ - table[reject[i]]] = 1 */ - .align 4 -L(init_table): - stbx r8,r9,r10 - lbzu r10,1(r4) - cmpdi cr7,r10,0 /* If reject[0] == '\0' finish */ - bne cr7,L(init_table) -L(finish_table): - /* set table[0] = 1 */ - li r10,1 - stb r10,0(r9) - li r10,0 - b L(mainloop) - - /* Unrool the loop 4 times and check using the table as: - i = 0; - while (1) - { - if (table[input[i++]] == 1) - return i - 1; - if (table[input[i++]] == 1) - return i - 1; - if (table[input[i++]] == 1) - return i - 1; - if (table[input[i++]] == 1) - return i - 1; - } */ - .align 4 -L(unroll): - lbz r8,1(r3) - addi r10,r10,4 - lbzx r8,r9,r8 - cmpwi r7,r8,1 - beq cr7,L(end) - lbz r8,2(r3) - addi r3,r3,4 - lbzx r8,r9,r8 - cmpwi cr7,r8,1 - beq cr7,L(end2) - lbz r8,3(r7) - lbzx r8,r9,r8 - cmpwi cr7,r8,1 - beq cr7,L(end3) -L(mainloop): - lbz r8,0(r3) - mr r7,r3 - addi r6,r10,1 - addi r4,r10,2 - addi r5,r10,3 - lbzx r8,r9,8 - cmpwi cr7,r8,1 - bne cr7,L(unroll) - mr r3,r10 - blr - - .align 4 -L(end): - mr r3,r6 - blr - - .align 4 -L(end2): - mr r3,r4 - blr - - .align 4 -L(end3): - mr r3,r5 - blr -END (strcspn) -libc_hidden_builtin_def (strcspn) |