diff options
Diffstat (limited to 'sysdeps/powerpc/powerpc32/405/strcpy.S')
-rw-r--r-- | sysdeps/powerpc/powerpc32/405/strcpy.S | 107 |
1 files changed, 0 insertions, 107 deletions
diff --git a/sysdeps/powerpc/powerpc32/405/strcpy.S b/sysdeps/powerpc/powerpc32/405/strcpy.S deleted file mode 100644 index 2a554dc32e..0000000000 --- a/sysdeps/powerpc/powerpc32/405/strcpy.S +++ /dev/null @@ -1,107 +0,0 @@ -/* Optimized strcpy 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> - -/* strcpy - - Register Use - r3:destination and return address - r4:source address - r10:temp destination address - - Implementation description - Loop by checking 2 words at a time, with dlmzb. Check if there is a null - in the 2 words. If there is a null jump to end checking to determine - where in the last 8 bytes it is. Copy the appropriate bytes of the last - 8 according to the null position. */ - -EALIGN (strcpy, 5, 0) - neg r7,r4 - subi r4,r4,1 - clrlwi. r8,r7,29 - subi r10,r3,1 - beq L(pre_word8_loop) - mtctr r8 - -L(loop): - lbzu r5,0x01(r4) - cmpi cr5,r5,0x0 - stbu r5,0x01(r10) - beq cr5,L(end_strcpy) - bdnz L(loop) - -L(pre_word8_loop): - subi r4,r4,3 - subi r10,r10,3 - -L(word8_loop): - lwzu r5,0x04(r4) - lwzu r6,0x04(r4) - dlmzb. r11,r5,r6 - bne L(byte_copy) - stwu r5,0x04(r10) - stwu r6,0x04(r10) - lwzu r5,0x04(r4) - lwzu r6,0x04(r4) - dlmzb. r11,r5,r6 - bne L(byte_copy) - stwu r5,0x04(r10) - stwu r6,0x04(r10) - lwzu r5,0x04(r4) - lwzu r6,0x04(r4) - dlmzb. r11,r5,r6 - bne L(byte_copy) - stwu r5,0x04(r10) - stwu r6,0x04(r10) - lwzu r5,0x04(r4) - lwzu r6,0x04(r4) - dlmzb. r11,r5,r6 - bne L(byte_copy) - stwu r5,0x04(r10) - stwu r6,0x04(r10) - b L(word8_loop) - -L(last_bytes_copy): - stwu r5,0x04(r10) - subi r11,r11,4 - mtctr r11 - addi r10,r10,3 - subi r4,r4,1 - -L(last_bytes_copy_loop): - lbzu r5,0x01(r4) - stbu r5,0x01(r10) - bdnz L(last_bytes_copy_loop) - blr - -L(byte_copy): - blt L(last_bytes_copy) - mtctr r11 - addi r10,r10,3 - subi r4,r4,5 - -L(last_bytes_copy_loop2): - lbzu r5,0x01(r4) - stbu r5,0x01(r10) - bdnz L(last_bytes_copy_loop2) - -L(end_strcpy): - blr -END (strcpy) -libc_hidden_builtin_def (strcpy) |