diff options
Diffstat (limited to 'lib/libc/powerpc64/string/memcpy_vsx.S')
| -rw-r--r-- | lib/libc/powerpc64/string/memcpy_vsx.S | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/lib/libc/powerpc64/string/memcpy_vsx.S b/lib/libc/powerpc64/string/memcpy_vsx.S new file mode 100644 index 000000000000..69554e026f35 --- /dev/null +++ b/lib/libc/powerpc64/string/memcpy_vsx.S @@ -0,0 +1,64 @@ +/*- + * Copyright (c) 2018 Instituto de Pesquisas Eldorado + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. 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. + * 3. Neither the name of the author nor the names of its contributors may + * be used to endorse or promote products derived from this software + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR OR CONTRIBUTORS 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. + */ + +#define FN_NAME __memcpy_vsx +#define BLOCK_BITS 6 +#define ALIGN_MASK 0xf + +/* + * r5: bytes to copy (multiple of BLOCK_BYTES) + * + */ +#define FN_COPY_LOOP \ + /* Load CTR with number of blocks */ \ + srdi %r5, %r5, BLOCK_BITS ;\ + mtctr %r5 ;\ + /* Prepare indexes to load and store data */ \ + xor %r6, %r6, %r6 ;\ + li %r9, 16 ;\ + li %r10, 32 ;\ + li %r11, 48 ;\ +.Lcopy_vsx_loop: \ + lxvd2x %vs6, %r6, %r4 ;\ + lxvd2x %vs7, %r9, %r4 ;\ + lxvd2x %vs8, %r10, %r4 ;\ + lxvd2x %vs9, %r11, %r4 ;\ + stxvd2x %vs6, %r6, %r3 ;\ + stxvd2x %vs7, %r9, %r3 ;\ + stxvd2x %vs8, %r10, %r3 ;\ + stxvd2x %vs9, %r11, %r3 ;\ + \ + addi %r3, %r3, BLOCK_BYTES ;\ + addi %r4, %r4, BLOCK_BYTES ;\ + bdnz .Lcopy_vsx_loop ;\ + \ + /* Check if there is remaining bytes */ \ + cmpd %r7, 0 ;\ + beq .Lexit ;\ + +#include "memcpy.S" |