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[/] [or1k/] [trunk/] [newlib-1.10.0/] [newlib/] [libc/] [machine/] [xscale/] [memcpy.c] - Blame information for rev 1765

Line No.	Rev	Author	Line
1	1010	ivang	`#if defined __thumb__`
2
3			`#include "../../string/memcpy.c"`
4
5			`#else`
6
7			`#include <string.h>`
8			`#include "xscale.h"`
9
10			`void *`
11			`memcpy (void dst0, const void src0, size_t len)`
12			`{`
13			`int dummy;`
14			`asm volatile (`
15			`#ifndef __OPTIMIZE_SIZE__`
16			`"cmp %2, #0x3`
17			`bls 3f`
18			`and lr, %1, #0x3`
19			`and r3, %0, #0x3`
20			`cmp lr, r3`
21			`bne 3f`
22			`cmp lr, #0x0`
23			`beq 2f`
24			`b 1f`
25			`0:`
26			`ldrb r3, [%1], #1`
27			`"`
28			`PRELOADSTR ("%1")`
29			`"`
30			`tst %1, #0x3`
31			`strb r3, [%0], #1`
32			`beq 3f`
33			`1:`
34			`sub %2, %2, #1`
35			`cmn %2, #1`
36			`bne 0b`
37			`2:`
38			`cmp %2, #0xf`
39			`bls 1f`
40			`0:`
41			`ldmia %1!, { r3, r4, r5, lr }`
42			`"`
43			`PRELOADSTR ("%1")`
44			`"`
45
46			`sub %2, %2, #16`
47			`cmp %2, #0xf`
48			`stmia %0!, { r3, r4, r5, lr }`
49			`bhi 0b`
50			`1:`
51			`cmp %2, #0x7`
52			`bls 1f`
53			`0:`
54			`ldmia %1!, { r3, r4 }`
55			`"`
56			`PRELOADSTR ("%1")`
57			`"`
58
59			`sub %2, %2, #8`
60			`cmp %2, #0x7`
61			`stmia %0!, { r3, r4 }`
62			`bhi 0b`
63			`1:`
64			`cmp %2, #0x3`
65			`bls 3f`
66			`0:`
67			`sub %2, %2, #4`
68			`ldr r3, [%1], #4`
69			`"`
70			`PRELOADSTR ("%1")`
71			`"`
72
73			`cmp %2, #0x3`
74			`str r3, [%0], #4`
75			`bhi 0b`
76			`"`
77			`#endif /* !__OPTIMIZE_SIZE__ */`
78			`"`
79			`3:`
80			`"`
81			`PRELOADSTR ("%1")`
82			`"`
83			`sub %2, %2, #1`
84			`cmn %2, #1`
85			`beq 1f`
86			`0:`
87			`sub %2, %2, #1`
88			`ldrb r3, [%1], #1`
89			`"`
90			`PRELOADSTR ("%1")`
91			`"`
92			`cmn %2, #1`
93			`strb r3, [%0], #1`
94			`bne 0b`
95			`1:"`
96			`: "=&r" (dummy), "=&r" (src0), "=&r" (len)`
97			`: "0" (dst0), "1" (src0), "2" (len)`
98			`: "memory", "lr", "r3", "r4", "r5", "cc");`
99			`return dst0;`
100			`}`
101			`#endif`