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Diffstat (limited to 'newlib/libc/machine/nds32/memcpy.S')
| -rw-r--r-- | newlib/libc/machine/nds32/memcpy.S | 77 |
1 files changed, 0 insertions, 77 deletions
diff --git a/newlib/libc/machine/nds32/memcpy.S b/newlib/libc/machine/nds32/memcpy.S deleted file mode 100644 index f27858c09..000000000 --- a/newlib/libc/machine/nds32/memcpy.S +++ /dev/null @@ -1,77 +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: - memcpy - copy memory regions - Syntax: - void *memcpy(void *s1, const void *s2, size_t n); - Description: - The memcpy function copies n characters from the object pointed to - by s2 into the object pointed to by s1. If copying takes place - between objects that overlap, the behavior is undeļ¬ned. - Return value: - The memcpy function returns the value of s1. -*/ - .text - .align 2 - .globl memcpy - .type memcpy, @function -memcpy: - /* Corner cases. If *s1 equals *s2 - or size_t is zero, just go return. */ - beq $r0, $r1, .Lend_memcpy - beqz $r2, .Lend_memcpy - - /* Keep *s1 as return value. - Set $r3 as how many words to copy. - Set $r2 as how many bytes are less than a word. */ - move $r5, $r0 - srli $r3, $r2, 2 - andi $r2, $r2, 3 - beqz $r3, .Lbyte_copy - -.Lword_copy: - /* Do the word copy $r3 times. Then, do the byte copy $r2 times. */ - lmw.bim $r4, [$r1], $r4, 0 - addi $r3, $r3, -1 - smw.bim $r4, [$r5], $r4, 0 - bnez $r3, .Lword_copy /* Loop again ? */ - beqz $r2, .Lend_memcpy /* Fall THRU or go return ? */ - -.Lbyte_copy: - /* Do the byte copy $r2 times. */ - lbi.bi $r4, [$r1], 1 - addi $r2, $r2, -1 - sbi.bi $r4, [$r5], 1 - bnez $r2, .Lbyte_copy /* Loop again ? */ - -.Lend_memcpy: - ret - .size memcpy, .-memcpy |