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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:20:36 -0700
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/sparc64/lib/memmove.S
downloadblackbird-op-linux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.gz
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Linux-2.6.12-rc2v2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'arch/sparc64/lib/memmove.S')
-rw-r--r--arch/sparc64/lib/memmove.S31
1 files changed, 31 insertions, 0 deletions
diff --git a/arch/sparc64/lib/memmove.S b/arch/sparc64/lib/memmove.S
new file mode 100644
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+++ b/arch/sparc64/lib/memmove.S
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+/* memmove.S: Simple memmove implementation.
+ *
+ * Copyright (C) 1997, 2004 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1996, 1997, 1998, 1999 Jakub Jelinek (jj@ultra.linux.cz)
+ */
+
+ .text
+ .align 32
+ .globl memmove
+ .type memmove,#function
+memmove: /* o0=dst o1=src o2=len */
+ mov %o0, %g1
+ cmp %o0, %o1
+ bleu,pt %xcc, memcpy
+ add %o1, %o2, %g7
+ cmp %g7, %o0
+ bleu,pt %xcc, memcpy
+ add %o0, %o2, %o5
+ sub %g7, 1, %o1
+
+ sub %o5, 1, %o0
+1: ldub [%o1], %g7
+ subcc %o2, 1, %o2
+ sub %o1, 1, %o1
+ stb %g7, [%o0]
+ bne,pt %icc, 1b
+ sub %o0, 1, %o0
+
+ retl
+ mov %g1, %o0
+ .size memmove, .-memmove
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