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| author |   deraadt <deraadt@openbsd.org> | 2013-06-13 03:58:22 +0000 |
|---|---|---|
| committer | deraadt <deraadt@openbsd.org> | 2013-06-13 03:58:22 +0000 |
| commit | c4696321ebf41e3cb16c900ca63eba1d1cda0615 (patch) | |
| tree | 7bd35a569c69051715e95078166793780c1441f2 /sys/lib/libkern/arch/vax/memmove.S | |
| parent | regen for previous commit (diff) | |
| download | wireguard-openbsd-c4696321ebf41e3cb16c900ca63eba1d1cda0615.tar.xz wireguard-openbsd-c4696321ebf41e3cb16c900ca63eba1d1cda0615.zip | |
same bcopy/memmove/memcpy methodology for vax.
checked over by mlarkin
Diffstat (limited to 'sys/lib/libkern/arch/vax/memmove.S')
| -rw-r--r-- | sys/lib/libkern/arch/vax/memmove.S | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/sys/lib/libkern/arch/vax/memmove.S b/sys/lib/libkern/arch/vax/memmove.S index 1a67e59b30e..7c13938255b 100644 --- a/sys/lib/libkern/arch/vax/memmove.S +++ b/sys/lib/libkern/arch/vax/memmove.S @@ -1,4 +1,4 @@ -/* $OpenBSD: memmove.S,v 1.3 2009/08/19 19:47:53 miod Exp $ */ +/* $OpenBSD: memmove.S,v 1.4 2013/06/13 03:58:22 deraadt Exp $ */ /*- * Copyright (c) 1990, 1993 * The Regents of the University of California. All rights reserved. @@ -38,10 +38,26 @@ #include <machine/asm.h> +ENTRY(bcopy, R2|R3|R4|R5) + movzwl $65535,r0 /* r0 = 64K (needed below) */ + movq 8(ap),r1 /* r1 = src, r2 = length */ + movl r1,r3 /* r3 = dst */ + movl 4(ap),r1 /* r1 = src */ + brw 5f /* do a memmove */ + +ENTRY(memcpy, R2|R3|R4|R5) + movzwl $65535,r0 /* r0 = 64K (needed below) */ + movq 8(ap),r1 /* r1 = src, r2 = length */ + movl 4(ap),r3 /* r3 = dst */ + cmpl r1,r3 + beql 2f /* equal, nothing to do */ + brw 1f /* jump into the forward copy path of memmove */ + ENTRY(memmove, R2|R3|R4|R5) movzwl $65535,r0 /* r0 = 64K (needed below) */ movq 8(ap),r1 /* r1 = src, r2 = length */ movl 4(ap),r3 /* r3 = dst */ +5: cmpl r1,r3 bgtru 1f /* normal forward case */ beql 2f /* equal, nothing to do */ |