diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc32/405/memcmp.S')
-rw-r--r-- | sysdeps/powerpc/powerpc32/405/memcmp.S | 128 |
1 files changed, 0 insertions, 128 deletions
diff --git a/sysdeps/powerpc/powerpc32/405/memcmp.S b/sysdeps/powerpc/powerpc32/405/memcmp.S deleted file mode 100644 index d1865140eb..0000000000 --- a/sysdeps/powerpc/powerpc32/405/memcmp.S +++ /dev/null @@ -1,128 +0,0 @@ -/* Optimized memcmp 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> - -/* memcmp - - r3:source1 address, return equality - r4:source2 address - r5:byte count - - Check 2 words from src1 and src2. If unequal jump to end and - return src1 > src2 or src1 < src2. - If count = zero check bytes before zero counter and then jump to end and - return src1 > src2, src1 < src2 or src1 = src2. - If src1 = src2 and no null, repeat. */ - -EALIGN (memcmp, 5, 0) - srwi. r6,r5,5 - beq L(preword2_count_loop) - mtctr r6 - clrlwi r5,r5,27 - -L(word8_compare_loop): - lwz r10,0(r3) - lwz r6,4(r3) - lwz r8,0(r4) - lwz r9,4(r4) - cmplw cr5,r8,r10 - cmplw cr1,r9,r6 - bne cr5,L(st2) - bne cr1,L(st1) - lwz r10,8(r3) - lwz r6,12(r3) - lwz r8,8(r4) - lwz r9,12(r4) - cmplw cr5,r8,r10 - cmplw cr1,r9,r6 - bne cr5,L(st2) - bne cr1,L(st1) - lwz r10,16(r3) - lwz r6,20(r3) - lwz r8,16(r4) - lwz r9,20(r4) - cmplw cr5,r8,r10 - cmplw cr1,r9,r6 - bne cr5,L(st2) - bne cr1,L(st1) - lwz r10,24(r3) - lwz r6,28(r3) - addi r3,r3,0x20 - lwz r8,24(r4) - lwz r9,28(r4) - addi r4,r4,0x20 - cmplw cr5,r8,r10 - cmplw cr1,r9,r6 - bne cr5,L(st2) - bne cr1,L(st1) - bdnz L(word8_compare_loop) - -L(preword2_count_loop): - srwi. r6,r5,3 - beq L(prebyte_count_loop) - mtctr r6 - clrlwi r5,r5,29 - -L(word2_count_loop): - lwz r10,0(r3) - lwz r6,4(r3) - addi r3,r3,0x08 - lwz r8,0(r4) - lwz r9,4(r4) - addi r4,r4,0x08 - cmplw cr5,r8,r10 - cmplw cr1,r9,r6 - bne cr5,L(st2) - bne cr1,L(st1) - bdnz L(word2_count_loop) - -L(prebyte_count_loop): - addi r5,r5,1 - mtctr r5 - bdz L(end_memcmp) - -L(byte_count_loop): - lbz r6,0(r3) - addi r3,r3,0x01 - lbz r8,0(r4) - addi r4,r4,0x01 - cmplw cr5,r8,r6 - bne cr5,L(st2) - bdnz L(byte_count_loop) - -L(end_memcmp): - addi r3,r0,0 - blr - -L(l_r): - addi r3,r0,1 - blr - -L(st1): - blt cr1,L(l_r) - addi r3,r0,-1 - blr - -L(st2): - blt cr5,L(l_r) - addi r3,r0,-1 - blr -END (memcmp) -libc_hidden_builtin_def (memcmp) -weak_alias (memcmp,bcmp) |