diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc32/405/strlen.S')
-rw-r--r-- | sysdeps/powerpc/powerpc32/405/strlen.S | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/sysdeps/powerpc/powerpc32/405/strlen.S b/sysdeps/powerpc/powerpc32/405/strlen.S deleted file mode 100644 index 25e54dafc7..0000000000 --- a/sysdeps/powerpc/powerpc32/405/strlen.S +++ /dev/null @@ -1,75 +0,0 @@ -/* Optimized strlen 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> - -/* strlen - - Register Use - r3:source address and return length of string - r4:byte counter - - Implementation description - Load 2 words at a time and count bytes, if we find null we subtract one from - the count and return the count value. We need to subtract one because - we don't count the null character as a byte. */ - -EALIGN (strlen,5,0) - neg r7,r3 - clrlwi. r8,r7,29 - addi r4,0,0 - beq L(byte_count_loop) - mtctr r8 - -L(loop): - lbz r5,0(r3) - cmpi cr5,r5,0x0 - addi r3,r3,0x1 - addi r4,r4,0x1 - beq cr5,L(end_strlen) - bdnz L(loop) - -L(byte_count_loop): - lwz r5,0(r3) - lwz r6,4(r3) - dlmzb. r12,r5,r6 - add r4,r4,r12 - bne L(end_strlen) - lwz r5,8(r3) - lwz r6,12(r3) - dlmzb. r12,r5,r6 - add r4,r4,r12 - bne L(end_strlen) - lwz r5,16(r3) - lwz r6,20(r3) - dlmzb. r12,r5,r6 - add r4,r4,r12 - bne L(end_strlen) - lwz r5,24(r3) - lwz r6,28(r3) - addi r3,r3,0x20 - dlmzb. r12,r5,r6 - add r4,r4,r12 - bne L(end_strlen) - b L(byte_count_loop) - -L(end_strlen): - addi r3,r4,-1 - blr -END (strlen) -libc_hidden_builtin_def (strlen) |