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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [x86_64/] [lib/] [copy_page.S] - Blame information for rev 1275

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/* Written 2003 by Andi Kleen, based on a kernel by Evandro Menezes */
 
#include 
 
/* Don't use streaming store because it's better when the target
   ends up in cache. */
 
/* Could vary the prefetch distance based on SMP/UP */
 
        .globl copy_page
        .p2align 4
copy_page:
 
    prefetcht0 (%rsi)
    prefetcht0 1*64(%rsi)
#ifdef CONFIG_MK8
        prefetchw (%rdi)
        prefetchw 1*64(%rdi)
#endif
 
        subq    $3*8,%rsp
        movq    %rbx,(%rsp)
        movq    %r12,1*8(%rsp)
        movq    %r13,2*8(%rsp)
 
        movl    $(4096/64)-5,%ecx
        .p2align 4
.Loop64:
        dec     %rcx
 
        movq        (%rsi), %rax
        movq      8 (%rsi), %rbx
        movq     16 (%rsi), %rdx
        movq     24 (%rsi), %r8
        movq     32 (%rsi), %r9
        movq     40 (%rsi), %r10
        movq     48 (%rsi), %r11
        movq     56 (%rsi), %r12
 
        prefetcht0 5*64(%rsi)
 
        movq     %rax,    (%rdi)
        movq     %rbx,  8 (%rdi)
        movq     %rdx, 16 (%rdi)
        movq     %r8,  24 (%rdi)
        movq     %r9,  32 (%rdi)
        movq     %r10, 40 (%rdi)
        movq     %r11, 48 (%rdi)
        movq     %r12, 56 (%rdi)
 
#ifdef CONFIG_MK8
        prefetchw 5*64(%rdi)
#endif
 
        leaq    64 (%rsi), %rsi
        leaq    64 (%rdi), %rdi
 
        jnz     .Loop64
 
        movl    $5,%ecx
        .p2align 4
.Loop2:
        decl   %ecx
 
        movq        (%rsi), %rax
        movq      8 (%rsi), %rbx
        movq     16 (%rsi), %rdx
        movq     24 (%rsi), %r8
        movq     32 (%rsi), %r9
        movq     40 (%rsi), %r10
        movq     48 (%rsi), %r11
        movq     56 (%rsi), %r12
 
        movq     %rax,    (%rdi)
        movq     %rbx,  8 (%rdi)
        movq     %rdx, 16 (%rdi)
        movq     %r8,  24 (%rdi)
        movq     %r9,  32 (%rdi)
        movq     %r10, 40 (%rdi)
        movq     %r11, 48 (%rdi)
        movq     %r12, 56 (%rdi)
 
        leaq    64(%rdi),%rdi
        leaq    64(%rsi),%rsi
 
        jnz     .Loop2
 
        movq    (%rsp),%rbx
        movq    1*8(%rsp),%r12
        movq    2*8(%rsp),%r13
        addq    $3*8,%rsp
        ret

Line No.	Rev	Author	Line
1	1275	phoenix	`/* Written 2003 by Andi Kleen, based on a kernel by Evandro Menezes */`
2
3			`#include`
4
5			`/* Don't use streaming store because it's better when the target`
6			`ends up in cache. */`
7
8			`/* Could vary the prefetch distance based on SMP/UP */`
9
10			`.globl copy_page`
11			`.p2align 4`
12			`copy_page:`
13
14			`prefetcht0 (%rsi)`
15			`prefetcht0 1*64(%rsi)`
16			`#ifdef CONFIG_MK8`
17			`prefetchw (%rdi)`
18			`prefetchw 1*64(%rdi)`
19			`#endif`
20
21			`subq $3*8,%rsp`
22			`movq %rbx,(%rsp)`
23			`movq %r12,1*8(%rsp)`
24			`movq %r13,2*8(%rsp)`
25
26			`movl $(4096/64)-5,%ecx`
27			`.p2align 4`
28			`.Loop64:`
29			`dec %rcx`
30
31			`movq (%rsi), %rax`
32			`movq 8 (%rsi), %rbx`
33			`movq 16 (%rsi), %rdx`
34			`movq 24 (%rsi), %r8`
35			`movq 32 (%rsi), %r9`
36			`movq 40 (%rsi), %r10`
37			`movq 48 (%rsi), %r11`
38			`movq 56 (%rsi), %r12`
39
40			`prefetcht0 5*64(%rsi)`
41
42			`movq %rax, (%rdi)`
43			`movq %rbx, 8 (%rdi)`
44			`movq %rdx, 16 (%rdi)`
45			`movq %r8, 24 (%rdi)`
46			`movq %r9, 32 (%rdi)`
47			`movq %r10, 40 (%rdi)`
48			`movq %r11, 48 (%rdi)`
49			`movq %r12, 56 (%rdi)`
50
51			`#ifdef CONFIG_MK8`
52			`prefetchw 5*64(%rdi)`
53			`#endif`
54
55			`leaq 64 (%rsi), %rsi`
56			`leaq 64 (%rdi), %rdi`
57
58			`jnz .Loop64`
59
60			`movl $5,%ecx`
61			`.p2align 4`
62			`.Loop2:`
63			`decl %ecx`
64
65			`movq (%rsi), %rax`
66			`movq 8 (%rsi), %rbx`
67			`movq 16 (%rsi), %rdx`
68			`movq 24 (%rsi), %r8`
69			`movq 32 (%rsi), %r9`
70			`movq 40 (%rsi), %r10`
71			`movq 48 (%rsi), %r11`
72			`movq 56 (%rsi), %r12`
73
74			`movq %rax, (%rdi)`
75			`movq %rbx, 8 (%rdi)`
76			`movq %rdx, 16 (%rdi)`
77			`movq %r8, 24 (%rdi)`
78			`movq %r9, 32 (%rdi)`
79			`movq %r10, 40 (%rdi)`
80			`movq %r11, 48 (%rdi)`
81			`movq %r12, 56 (%rdi)`
82
83			`leaq 64(%rdi),%rdi`
84			`leaq 64(%rsi),%rsi`
85
86			`jnz .Loop2`
87
88			`movq (%rsp),%rbx`
89			`movq 1*8(%rsp),%r12`
90			`movq 2*8(%rsp),%r13`
91			`addq $3*8,%rsp`
92			`ret`

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [x86_64/] [lib/] [copy_page.S] - Blame information for rev 1275