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Diffstat (limited to 'newlib/libc/machine/nds32/memset.S')
| -rw-r--r-- | newlib/libc/machine/nds32/memset.S | 80 |
1 files changed, 0 insertions, 80 deletions
diff --git a/newlib/libc/machine/nds32/memset.S b/newlib/libc/machine/nds32/memset.S deleted file mode 100644 index 51e5ff2ae..000000000 --- a/newlib/libc/machine/nds32/memset.S +++ /dev/null @@ -1,80 +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: - memset - fill memory with a constant byte - Syntax: - void *memset(void *s, int c, size_t n); - Description: - The memset function copies the value of c (converted to an unsigned char) - into each of the first n characters of the object pointed to by s. - Return value: - The memset function returns the value of s. -*/ - .text - .align 2 - .globl memset - .type memset, @function -memset: - /* Corner case. If n is zero, just go return. */ - beqz $r2, .Lend_memset - - /* Keep $r0 as return value. - Set $r4 as how many words to copy. - Set $r2 as how many bytes are less than a word. */ - move $r5, $r0 - srli $r4, $r2, 2 - andi $r2, $r2, 3 - beqz $r4, .Lbyte_set - - /* Set $r1 a word-size pattern composed of the value of c - (converted to an unsigned char). Convert ??????ab to abababab. */ - andi $r1, $r1, 0xff /* Set $r1 = 000000ab. */ - slli $r3, $r1, 8 /* Set $r3 = 0000ab00. */ - or $r1, $r1, $r3 /* Set $r1 = 0000abab. */ - slli $r3, $r1, 16 /* Set $r3 = abab0000. */ - or $r1, $r1, $r3 /* Set $r1 = abababab. */ - -.Lword_set: - /* Do the word set $r4 times. Then, do the byte set $r2 times. */ - addi $r4, $r4, -1 - smw.bim $r1, [$r5], $r1 /* Set a word-size. */ - bnez $r4, .Lword_set /* Loop again ? */ - beqz $r2, .Lend_memset /* Fall THRU or go return ? */ - -.Lbyte_set: - /* Do the byte set $r2 times. */ - addi $r2, $r2, -1 - sbi.p $r1, [$r5], 1 /* Set a byte-size. */ - bnez $r2, .Lbyte_set /* Loop again ? */ - -.Lend_memset: - ret - .size memset, .-memset |