diff options
author | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
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committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2005-04-16 18:20:36 -0400 |
commit | 1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch) | |
tree | 0bba044c4ce775e45a88a51686b5d9f90697ea9d /arch/m68knommu/lib/memcpy.c |
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/m68knommu/lib/memcpy.c')
-rw-r--r-- | arch/m68knommu/lib/memcpy.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/arch/m68knommu/lib/memcpy.c b/arch/m68knommu/lib/memcpy.c new file mode 100644 index 000000000000..0d5577569e4c --- /dev/null +++ b/arch/m68knommu/lib/memcpy.c | |||
@@ -0,0 +1,63 @@ | |||
1 | |||
2 | #include <linux/types.h> | ||
3 | #include <linux/autoconf.h> | ||
4 | |||
5 | void * memcpy(void * to, const void * from, size_t n) | ||
6 | { | ||
7 | #ifdef CONFIG_COLDFIRE | ||
8 | void *xto = to; | ||
9 | size_t temp; | ||
10 | |||
11 | if (!n) | ||
12 | return xto; | ||
13 | if ((long) to & 1) | ||
14 | { | ||
15 | char *cto = to; | ||
16 | const char *cfrom = from; | ||
17 | *cto++ = *cfrom++; | ||
18 | to = cto; | ||
19 | from = cfrom; | ||
20 | n--; | ||
21 | } | ||
22 | if (n > 2 && (long) to & 2) | ||
23 | { | ||
24 | short *sto = to; | ||
25 | const short *sfrom = from; | ||
26 | *sto++ = *sfrom++; | ||
27 | to = sto; | ||
28 | from = sfrom; | ||
29 | n -= 2; | ||
30 | } | ||
31 | temp = n >> 2; | ||
32 | if (temp) | ||
33 | { | ||
34 | long *lto = to; | ||
35 | const long *lfrom = from; | ||
36 | for (; temp; temp--) | ||
37 | *lto++ = *lfrom++; | ||
38 | to = lto; | ||
39 | from = lfrom; | ||
40 | } | ||
41 | if (n & 2) | ||
42 | { | ||
43 | short *sto = to; | ||
44 | const short *sfrom = from; | ||
45 | *sto++ = *sfrom++; | ||
46 | to = sto; | ||
47 | from = sfrom; | ||
48 | } | ||
49 | if (n & 1) | ||
50 | { | ||
51 | char *cto = to; | ||
52 | const char *cfrom = from; | ||
53 | *cto = *cfrom; | ||
54 | } | ||
55 | return xto; | ||
56 | #else | ||
57 | const char *c_from = from; | ||
58 | char *c_to = to; | ||
59 | while (n-- > 0) | ||
60 | *c_to++ = *c_from++; | ||
61 | return((void *) to); | ||
62 | #endif | ||
63 | } | ||