diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc32/405/strcmp.S')
-rw-r--r-- | sysdeps/powerpc/powerpc32/405/strcmp.S | 134 |
1 files changed, 0 insertions, 134 deletions
diff --git a/sysdeps/powerpc/powerpc32/405/strcmp.S b/sysdeps/powerpc/powerpc32/405/strcmp.S deleted file mode 100644 index 42e04e9552..0000000000 --- a/sysdeps/powerpc/powerpc32/405/strcmp.S +++ /dev/null @@ -1,134 +0,0 @@ -/* Optimized strcmp implementation for PowerPC476. - Copyright (C) 2010-2017 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> - -/* strcmp - - Register Use - r0:temp return equality - r3:source1 address, return equality - r4:source2 address - - Implementation description - Check 2 words from src1 and src2. If unequal jump to end and - return src1 > src2 or src1 < src2. - If null check bytes before null and then jump to end and - return src1 > src2, src1 < src2 or src1 = src2. - If src1 = src2 and no null, repeat. */ - -EALIGN (strcmp,5,0) - neg r7,r3 - clrlwi r7,r7,20 - neg r8,r4 - clrlwi r8,r8,20 - srwi. r7,r7,5 - beq L(byte_loop) - srwi. r8,r8,5 - beq L(byte_loop) - cmplw r7,r8 - mtctr r7 - ble L(big_loop) - mtctr r8 - -L(big_loop): - lwz r5,0(r3) - lwz r6,4(r3) - lwz r8,0(r4) - lwz r9,4(r4) - dlmzb. r12,r5,r6 - bne L(end_check) - cmplw r5,r8 - bne L(st1) - cmplw r6,r9 - bne L(st1) - lwz r5,8(r3) - lwz r6,12(r3) - lwz r8,8(r4) - lwz r9,12(r4) - dlmzb. r12,r5,r6 - bne L(end_check) - cmplw r5,r8 - bne L(st1) - cmplw r6,r9 - bne L(st1) - lwz r5,16(r3) - lwz r6,20(r3) - lwz r8,16(r4) - lwz r9,20(r4) - dlmzb. r12,r5,r6 - bne L(end_check) - cmplw r5,r8 - bne L(st1) - cmplw r6,r9 - bne L(st1) - lwz r5,24(r3) - lwz r6,28(r3) - addi r3,r3,0x20 - lwz r8,24(r4) - lwz r9,28(r4) - addi r4,r4,0x20 - dlmzb. r12,r5,r6 - bne L(end_check) - cmplw r5,r8 - bne L(st1) - cmplw r6,r9 - bne L(st1) - bdnz L(big_loop) - b L(byte_loop) - -L(end_check): - subfic r12,r12,4 - blt L(end_check2) - rlwinm r12,r12,3,0,31 - srw r5,r5,r12 - srw r8,r8,r12 - cmplw r5,r8 - bne L(st1) - b L(end_strcmp) - -L(end_check2): - addi r12,r12,4 - cmplw r5,r8 - rlwinm r12,r12,3,0,31 - bne L(st1) - srw r6,r6,r12 - srw r9,r9,r12 - cmplw r6,r9 - bne L(st1) - -L(end_strcmp): - addi r3,r0,0 - blr - -L(st1): - mfcr r3 - blr - -L(byte_loop): - lbz r5,0(r3) - addi r3,r3,1 - lbz r6,0(r4) - addi r4,r4,1 - cmplw r5,r6 - bne L(st1) - cmpwi r5,0 - beq L(end_strcmp) - b L(byte_loop) -END (strcmp) -libc_hidden_builtin_def (strcmp) |