diff options
Diffstat (limited to 'arch/m68k/lib/memcpy.c')
-rw-r--r-- | arch/m68k/lib/memcpy.c | 75 |
1 files changed, 0 insertions, 75 deletions
diff --git a/arch/m68k/lib/memcpy.c b/arch/m68k/lib/memcpy.c deleted file mode 100644 index 73e181823d9b..000000000000 --- a/arch/m68k/lib/memcpy.c +++ /dev/null | |||
@@ -1,75 +0,0 @@ | |||
1 | #include <linux/types.h> | ||
2 | |||
3 | void * memcpy(void * to, const void * from, size_t n) | ||
4 | { | ||
5 | void *xto = to; | ||
6 | size_t temp, temp1; | ||
7 | |||
8 | if (!n) | ||
9 | return xto; | ||
10 | if ((long) to & 1) | ||
11 | { | ||
12 | char *cto = to; | ||
13 | const char *cfrom = from; | ||
14 | *cto++ = *cfrom++; | ||
15 | to = cto; | ||
16 | from = cfrom; | ||
17 | n--; | ||
18 | } | ||
19 | if (n > 2 && (long) to & 2) | ||
20 | { | ||
21 | short *sto = to; | ||
22 | const short *sfrom = from; | ||
23 | *sto++ = *sfrom++; | ||
24 | to = sto; | ||
25 | from = sfrom; | ||
26 | n -= 2; | ||
27 | } | ||
28 | temp = n >> 2; | ||
29 | if (temp) | ||
30 | { | ||
31 | long *lto = to; | ||
32 | const long *lfrom = from; | ||
33 | |||
34 | __asm__ __volatile__("movel %2,%3\n\t" | ||
35 | "andw #7,%3\n\t" | ||
36 | "lsrl #3,%2\n\t" | ||
37 | "negw %3\n\t" | ||
38 | "jmp %%pc@(1f,%3:w:2)\n\t" | ||
39 | "4:\t" | ||
40 | "movel %0@+,%1@+\n\t" | ||
41 | "movel %0@+,%1@+\n\t" | ||
42 | "movel %0@+,%1@+\n\t" | ||
43 | "movel %0@+,%1@+\n\t" | ||
44 | "movel %0@+,%1@+\n\t" | ||
45 | "movel %0@+,%1@+\n\t" | ||
46 | "movel %0@+,%1@+\n\t" | ||
47 | "movel %0@+,%1@+\n\t" | ||
48 | "1:\t" | ||
49 | "dbra %2,4b\n\t" | ||
50 | "clrw %2\n\t" | ||
51 | "subql #1,%2\n\t" | ||
52 | "jpl 4b\n\t" | ||
53 | : "=a" (lfrom), "=a" (lto), "=d" (temp), | ||
54 | "=&d" (temp1) | ||
55 | : "0" (lfrom), "1" (lto), "2" (temp) | ||
56 | ); | ||
57 | to = lto; | ||
58 | from = lfrom; | ||
59 | } | ||
60 | if (n & 2) | ||
61 | { | ||
62 | short *sto = to; | ||
63 | const short *sfrom = from; | ||
64 | *sto++ = *sfrom++; | ||
65 | to = sto; | ||
66 | from = sfrom; | ||
67 | } | ||
68 | if (n & 1) | ||
69 | { | ||
70 | char *cto = to; | ||
71 | const char *cfrom = from; | ||
72 | *cto = *cfrom; | ||
73 | } | ||
74 | return xto; | ||
75 | } | ||