Initial commit.

1 files changed, 67 insertions, 0 deletions

diff --git a/readwrite.asm b/readwrite.asm
new file mode 100644
index 0000000..b498f63
--- /dev/null
+++ b/readwrite.asm
@@ -0,0 +1,67 @@
+;
+; Copyright 2019 Anton Khirnov <anton@khirnov.net>
+;
+; This program is free software: you can redistribute it and/or modify
+; it under the terms of the GNU General Public License as published by
+; the Free Software Foundation, either version 3 of the License, or
+; (at your option) any later version.
+;
+; This program 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 General Public License for more details.
+;
+; You should have received a copy of the GNU General Public License
+; along with this program.  If not, see <http://www.gnu.org/licenses/>.
+;
+
+%include "config.asm"
+%include "x86inc.asm"
+
+SECTION .rodata align=64
+
+const1:  times 8 dq  1.0
+
+SECTION .text
+
+INIT_YMM avx
+cglobal mem_write, 2, 2, 1, dst, dstlen
+    add dstq, dstlenq
+    neg dstlenq
+
+    mova m0, [const1]
+
+.loop:
+    mova [dstq + dstlenq + mmsize * 0], m0
+    mova [dstq + dstlenq + mmsize * 1], m0
+    mova [dstq + dstlenq + mmsize * 2], m0
+    mova [dstq + dstlenq + mmsize * 3], m0
+    mova [dstq + dstlenq + mmsize * 4], m0
+    mova [dstq + dstlenq + mmsize * 5], m0
+    mova [dstq + dstlenq + mmsize * 6], m0
+    mova [dstq + dstlenq + mmsize * 7], m0
+
+    add dstlenq, mmsize * 8
+    js .loop
+
+    RET
+
+INIT_YMM avx
+cglobal mem_read, 2, 2, 1, src, srclen
+    add srcq, srclenq
+    neg srclenq
+
+.loop:
+    mova         m0, [srcq + srclenq]
+    mova         m0, [srcq + srclenq + mmsize]
+    mova         m0, [srcq + srclenq + mmsize * 2]
+    mova         m0, [srcq + srclenq + mmsize * 3]
+    mova         m0, [srcq + srclenq + mmsize * 4]
+    mova         m0, [srcq + srclenq + mmsize * 5]
+    mova         m0, [srcq + srclenq + mmsize * 6]
+    mova         m0, [srcq + srclenq + mmsize * 7]
+
+    add srclenq, mmsize * 8
+    js .loop
+
+    RET