aboutsummaryrefslogtreecommitdiff
path: root/sysdeps/sh/memcpy.S
diff options
context:
space:
mode:
Diffstat (limited to 'sysdeps/sh/memcpy.S')
-rw-r--r--sysdeps/sh/memcpy.S231
1 files changed, 231 insertions, 0 deletions
diff --git a/sysdeps/sh/memcpy.S b/sysdeps/sh/memcpy.S
new file mode 100644
index 0000000000..18be7dc7f4
--- /dev/null
+++ b/sysdeps/sh/memcpy.S
@@ -0,0 +1,231 @@
+/* Copyright (C) 1999, 2000 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Library General Public License as
+ published by the Free Software Foundation; either version 2 of the
+ License, or (at your option) any later version.
+
+ The GNU C Library 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
+ Library General Public License for more details.
+
+ You should have received a copy of the GNU Library General Public
+ License along with the GNU C Library; see the file COPYING.LIB. If not,
+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
+
+#include <sysdep.h>
+#include <endian.h>
+
+/*
+ * void *memcpy(void *dst, const void *src, size_t n);
+ * No overlap between the memory of DST and of SRC are assumed.
+ */
+
+ENTRY(memcpy)
+ tst r6,r6
+ bt/s 1f
+ mov r4,r0
+ mov #12,r1
+ cmp/gt r6,r1
+ bf 2f
+0:
+ mov.b @r5+,r1
+ dt r6
+ mov.b r1,@r4
+ bf/s 0b
+ add #1,r4
+1:
+ rts
+ nop
+2:
+ mov.l r8,@-r15
+ mov.l r9,@-r15
+ mov r6,r2
+ mov.l r10,@-r15
+ mov.l r11,@-r15
+ mov.l r14,@-r15
+ mov r4,r11
+ mov r15,r14
+ mov r5,r0
+ and #1,r0
+ tst r0,r0
+ bt/s .L42
+ mov r5,r0
+ mov.b @r5+,r1
+ add #-1,r2
+ add #1,r4
+ mov.b r1,@r11
+ mov r5,r0
+.L42:
+ and #2,r0
+ tst r0,r0
+ bt/s .L43
+ mov r4,r0
+ mov.b @r5+,r1
+ mov.b r1,@r4
+ mov.b @r5+,r1
+ add #1,r4
+ add #-2,r2
+ mov.b r1,@r4
+ add #1,r4
+ mov r4,r0
+.L43:
+ and #1,r0
+ tst r0,r0
+ bf/s .L38
+ mov r4,r0
+ and #2,r0
+ tst r0,r0
+ bf/s .L7
+ mov r2,r0
+ shlr2 r0
+ and #3,r0
+ cmp/eq #2,r0
+ bt/s .L10
+ mov #2,r1
+ cmp/gt r1,r0
+ bt/s .L14
+ cmp/eq #3,r0
+ cmp/eq #1,r0
+ bt/s .L11
+ mov r0,r1
+ bra .L44
+ shll2 r1
+ .align 5
+.L14:
+ bf .L8
+ mov.l @(8,r5),r1
+ mov.l r1,@(8,r4)
+.L10:
+ mov.l @(4,r5),r1
+ mov.l r1,@(4,r4)
+.L11:
+ mov.l @r5,r1
+ mov.l r1,@r4
+.L8:
+ mov r0,r1
+ shll2 r1
+.L44:
+ add r1,r4
+ add r1,r5
+ mov r2,r0
+ mov #-4,r1
+ shad r1,r0
+ mov #3,r6
+ bra .L37
+ and r2,r6
+ .align 5
+.L18:
+ mov.l @r5+,r1
+ mov.l @r5+,r2
+ mov.l @r5+,r3
+ mov.l @r5+,r7
+ mov.l r1,@r4
+ mov.l r2,@(4,r4)
+ mov.l r3,@(8,r4)
+ mov.l r7,@(12,r4)
+ add #16,r4
+.L37:
+ cmp/pl r0
+ bt/s .L18
+ add #-1,r0
+ mov r6,r2
+.L38:
+ bra .L40
+ mov r2,r0
+ .align 5
+.L7:
+ shar r0
+ and #3,r0
+ cmp/eq #2,r0
+ bt/s .L23
+ mov #2,r1
+ cmp/gt r1,r0
+ bt/s .L27
+ cmp/eq #3,r0
+ cmp/eq #1,r0
+ bt/s .L24
+ mov r0,r1
+ bra .L45
+ add r0,r1
+ .align 5
+.L27:
+ bf .L21
+ add #4,r5
+ mov.w @r5,r1
+ add #4,r4
+ mov.w r1,@r4
+ add #-4,r5
+ add #-4,r4
+.L23:
+ add #2,r5
+ mov.w @r5,r1
+ add #2,r4
+ mov.w r1,@r4
+ add #-2,r5
+ add #-2,r4
+.L24:
+ mov.w @r5,r1
+ mov.w r1,@r4
+.L21:
+ mov r0,r1
+ add r0,r1
+.L45:
+ add r1,r4
+ add r1,r5
+ mov r2,r0
+ mov #-3,r1
+ shad r1,r0
+ mov #1,r10
+ mov r0,r1
+ and r2,r10
+ cmp/pl r1
+ bf/s .L29
+ add #-1,r0
+ mov r4,r9
+ mov r4,r8
+ add #4,r9
+ mov r4,r6
+ add #6,r8
+ add #2,r6
+.L31:
+ mov.w @r5+,r1
+ mov.w @r5+,r2
+ mov.w @r5+,r3
+ mov.w @r5+,r7
+ mov.w r1,@r4
+ mov.w r2,@r6
+ add #8,r4
+ mov r0,r1
+ add #8,r6
+ mov.w r3,@r9
+ add #-1,r0
+ add #8,r9
+ mov.w r7,@r8
+ cmp/pl r1
+ bt/s .L31
+ add #8,r8
+.L29:
+ mov r10,r2
+ mov r2,r0
+.L40:
+ cmp/pl r0
+ bf .L34
+.L35:
+ mov.b @r5+,r1
+ dt r2
+ mov.b r1,@r4
+ bf/s .L35
+ add #1,r4
+.L34:
+ mov r11,r0
+ mov r14,r15
+ mov.l @r15+,r14
+ mov.l @r15+,r11
+ mov.l @r15+,r10
+ mov.l @r15+,r9
+ rts
+ mov.l @r15+,r8