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diff --git a/sysdeps/powerpc/powerpc32/405/strncmp.S b/sysdeps/powerpc/powerpc32/405/strncmp.S
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-/* Optimized strncmp 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>
-
-/* strncmp
-
- Register Use
- r0:temp return equality
- r3:source1 address, return equality
- r4:source2 address
- r5:byte count
-
- Implementation description
- Touch in 3 lines of D-cache.
- If source1 or source2 is unaligned copy 0-3 bytes to make source1 aligned
- 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 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 (strncmp,5,0)
- neg r7,r3
- clrlwi r7,r7,20
- neg r8,r4
- clrlwi r8,r8,20
- srwi. r7,r7,3
- beq L(prebyte_count_loop)
- srwi. r8,r8,3
- beq L(prebyte_count_loop)
- cmplw r7,r8
- mtctr r7
- ble L(preword2_count_loop)
- mtctr r8
-
-L(preword2_count_loop):
- srwi. r6,r5,3
- beq L(prebyte_count_loop)
- mfctr r7
- cmplw r6,r7
- bgt L(set_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
- dlmzb. r12,r10,r6
- bne L(end_check)
- cmplw r10,r8
- bne L(st1)
- cmplw r6,r9
- bne L(st1)
- bdnz L(word2_count_loop)
-
-L(prebyte_count_loop):
- addi r5,r5,1
- mtctr r5
- bdz L(end_strncmp)
-
-L(byte_count_loop):
- lbz r6,0(r3)
- addi r3,r3,1
- lbz r7,0(r4)
- addi r4,r4,1
- cmplw r6,r7
- bne L(st1)
- cmpwi r6,0
- beq L(end_strncmp)
- bdnz L(byte_count_loop)
- b L(end_strncmp)
-
-L(set_count_loop):
- slwi r7,r7,3
- subf r5,r7,r5
- b L(word2_count_loop)
-
-L(end_check):
- subfic r12,r12,4
- blt L(end_check2)
- rlwinm r12,r12,3,0,31
- srw r10,r10,r12
- srw r8,r8,r12
- cmplw r10,r8
- bne L(st1)
- b L(end_strncmp)
-
-L(end_check2):
- addi r12,r12,4
- cmplw r10,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_strncmp):
- addi r3,r0,0
- blr
-
-L(st1):
- mfcr r3
- blr
-END (strncmp)
-libc_hidden_builtin_def (strncmp)