diff options
Diffstat (limited to 'newlib/libc/machine/nds32/strcpy.S')
| -rw-r--r-- | newlib/libc/machine/nds32/strcpy.S | 76 |
1 files changed, 0 insertions, 76 deletions
diff --git a/newlib/libc/machine/nds32/strcpy.S b/newlib/libc/machine/nds32/strcpy.S deleted file mode 100644 index 6d94396ac..000000000 --- a/newlib/libc/machine/nds32/strcpy.S +++ /dev/null @@ -1,76 +0,0 @@ -/* -Copyright (c) 2013 Andes Technology Corporation. -All rights reserved. - -Redistribution and use in source and binary forms, with or without -modification, are permitted provided that the following conditions are met: - - Redistributions of source code must retain the above copyright - notice, this list of conditions and the following disclaimer. - - Redistributions in binary form must reproduce the above copyright - notice, this list of conditions and the following disclaimer in the - documentation and/or other materials provided with the distribution. - - The name of the company may not be used to endorse or promote - products derived from this software without specific prior written - permission. - -THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" -AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE -IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE -DISCLAIMED. IN NO EVENT SHALL RED HAT INCORPORATED BE LIABLE FOR ANY -DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES -(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; -LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND -ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS -SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - - - Function: - strcpy - copy a string. - Syntax: - char *strcpy(char *dest, const char *src); - Description: - This function copies the string pointed to by src into the array - point to by dest (include the teminating null character). - Return value: - strcpy returns the dest as given. -*/ - .text - .align 2 - .globl strcpy - .type strcpy, @function -strcpy: - move $r3, $r0 /* Keep r0 as reture value. */ - /* If SRC or DEST is unaligned, then copy bytes. */ - or $r2, $r1, $r0 - andi $r2, $r2, #3 - bnez $r2, .Lbyte_mode - -.Lword_mode: - /* SRC and DEST are both "long int" aligned, try to do "long int" - sized copies. */ - /* #define DETECTNULL(X) (((X) - 0x01010101) & ~(X) & 0x80808080) - DETECTNULL returns nonzero if (long)X contains a NULL byte. */ - lwi $r2, [$r1+(0)] /* r2 is X */ - sethi $r4, hi20(0xFEFEFEFF) - ori $r4, $r4, lo12(0xFEFEFEFF) - add $r4, $r2, $r4 /* r4 = ((X) - 0x01010101) */ - nor $r5, $r2, $r2 /* r5 = ~(X) */ - and $r4, $r5, $r4 /* r4 = ~(X) & ((X) - 0x01010101) */ - sethi $r5, hi20(0x80808080) - ori $r5, $r5, lo12(0x80808080) - and $r4, $r4, $r5 /* r4 = r4 & 0x80808080 */ - bnez $r4, .Lbyte_mode /* Contains a NULL byte. */ - swi.bi $r2, [$r3], #4 - addi $r1, $r1, #4 - b .Lword_mode - -.Lbyte_mode: - lbi.bi $r4, [$r1], #1 /* r4 <- *src++ */ - sbi.bi $r4, [$r3], #1 /* r4 -> *dest++ */ - bnez $r4, .Lbyte_mode - ret - .size strcpy, .-strcpy |