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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [arm/] [lib/] [io-writesb.S] - Blame information for rev 1765

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/*
 *  linux/arch/arm/lib/io-writesb.S
 *
 *  Copyright (C) 1995-2000 Russell King
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 */
#include 
#include 
#include 
 
.outsb_align:   rsb     ip, ip, #4
                cmp     ip, r2
                movgt   ip, r2
                cmp     ip, #2
                ldrb    r3, [r1], #1
                strb    r3, [r0]
                ldrgeb  r3, [r1], #1
                strgeb  r3, [r0]
                ldrgtb  r3, [r1], #1
                strgtb  r3, [r0]
                subs    r2, r2, ip
                bne     .outsb_aligned
 
ENTRY(__raw_writesb)
                teq     r2, #0          @ do we have to check for the zero len?
                moveq   pc, lr
                ands    ip, r1, #3
                bne     .outsb_align
 
.outsb_aligned: stmfd   sp!, {r4 - r6, lr}
 
                subs    r2, r2, #16
                bmi     .outsb_no_16
 
.outsb_16_lp:   ldmia   r1!, {r3 - r6}
 
                strb    r3, [r0]
                mov     r3, r3, lsr #8
                strb    r3, [r0]
                mov     r3, r3, lsr #8
                strb    r3, [r0]
                mov     r3, r3, lsr #8
                strb    r3, [r0]
 
                strb    r4, [r0]
                mov     r4, r4, lsr #8
                strb    r4, [r0]
                mov     r4, r4, lsr #8
                strb    r4, [r0]
                mov     r4, r4, lsr #8
                strb    r4, [r0]
 
                strb    r5, [r0]
                mov     r5, r5, lsr #8
                strb    r5, [r0]
                mov     r5, r5, lsr #8
                strb    r5, [r0]
                mov     r5, r5, lsr #8
                strb    r5, [r0]
 
                strb    r6, [r0]
                mov     r6, r6, lsr #8
                strb    r6, [r0]
                mov     r6, r6, lsr #8
                strb    r6, [r0]
                mov     r6, r6, lsr #8
                strb    r6, [r0]
 
                subs    r2, r2, #16
                bpl     .outsb_16_lp
 
                tst     r2, #15
                LOADREGS(eqfd, sp!, {r4 - r6, pc})
 
.outsb_no_16:   tst     r2, #8
                beq     .outsb_no_8
 
                ldmia   r1!, {r3, r4}
 
                strb    r3, [r0]
                mov     r3, r3, lsr #8
                strb    r3, [r0]
                mov     r3, r3, lsr #8
                strb    r3, [r0]
                mov     r3, r3, lsr #8
                strb    r3, [r0]
 
                strb    r4, [r0]
                mov     r4, r4, lsr #8
                strb    r4, [r0]
                mov     r4, r4, lsr #8
                strb    r4, [r0]
                mov     r4, r4, lsr #8
                strb    r4, [r0]
 
.outsb_no_8:    tst     r2, #4
                beq     .outsb_no_4
 
                ldr     r3, [r1], #4
                strb    r3, [r0]
                mov     r3, r3, lsr #8
                strb    r3, [r0]
                mov     r3, r3, lsr #8
                strb    r3, [r0]
                mov     r3, r3, lsr #8
                strb    r3, [r0]
 
.outsb_no_4:    ands    r2, r2, #3
                LOADREGS(eqfd, sp!, {r4 - r6, pc})
 
                cmp     r2, #2
                ldrb    r3, [r1], #1
                strb    r3, [r0]
                ldrgeb  r3, [r1], #1
                strgeb  r3, [r0]
                ldrgtb  r3, [r1]
                strgtb  r3, [r0]
 
                LOADREGS(fd, sp!, {r4 - r6, pc})

Line No.	Rev	Author	Line
1	1275	phoenix	`/*`
2			`* linux/arch/arm/lib/io-writesb.S`
3			`*`
4			`* Copyright (C) 1995-2000 Russell King`
5			`*`
6			`* This program is free software; you can redistribute it and/or modify`
7			`* it under the terms of the GNU General Public License version 2 as`
8			`* published by the Free Software Foundation.`
9			`*/`
10			`#include`
11			`#include`
12			`#include`
13
14			`.outsb_align: rsb ip, ip, #4`
15			`cmp ip, r2`
16			`movgt ip, r2`
17			`cmp ip, #2`
18			`ldrb r3, [r1], #1`
19			`strb r3, [r0]`
20			`ldrgeb r3, [r1], #1`
21			`strgeb r3, [r0]`
22			`ldrgtb r3, [r1], #1`
23			`strgtb r3, [r0]`
24			`subs r2, r2, ip`
25			`bne .outsb_aligned`
26
27			`ENTRY(__raw_writesb)`
28			`teq r2, #0 @ do we have to check for the zero len?`
29			`moveq pc, lr`
30			`ands ip, r1, #3`
31			`bne .outsb_align`
32
33			`.outsb_aligned: stmfd sp!, {r4 - r6, lr}`
34
35			`subs r2, r2, #16`
36			`bmi .outsb_no_16`
37
38			`.outsb_16_lp: ldmia r1!, {r3 - r6}`
39
40			`strb r3, [r0]`
41			`mov r3, r3, lsr #8`
42			`strb r3, [r0]`
43			`mov r3, r3, lsr #8`
44			`strb r3, [r0]`
45			`mov r3, r3, lsr #8`
46			`strb r3, [r0]`
47
48			`strb r4, [r0]`
49			`mov r4, r4, lsr #8`
50			`strb r4, [r0]`
51			`mov r4, r4, lsr #8`
52			`strb r4, [r0]`
53			`mov r4, r4, lsr #8`
54			`strb r4, [r0]`
55
56			`strb r5, [r0]`
57			`mov r5, r5, lsr #8`
58			`strb r5, [r0]`
59			`mov r5, r5, lsr #8`
60			`strb r5, [r0]`
61			`mov r5, r5, lsr #8`
62			`strb r5, [r0]`
63
64			`strb r6, [r0]`
65			`mov r6, r6, lsr #8`
66			`strb r6, [r0]`
67			`mov r6, r6, lsr #8`
68			`strb r6, [r0]`
69			`mov r6, r6, lsr #8`
70			`strb r6, [r0]`
71
72			`subs r2, r2, #16`
73			`bpl .outsb_16_lp`
74
75			`tst r2, #15`
76			`LOADREGS(eqfd, sp!, {r4 - r6, pc})`
77
78			`.outsb_no_16: tst r2, #8`
79			`beq .outsb_no_8`
80
81			`ldmia r1!, {r3, r4}`
82
83			`strb r3, [r0]`
84			`mov r3, r3, lsr #8`
85			`strb r3, [r0]`
86			`mov r3, r3, lsr #8`
87			`strb r3, [r0]`
88			`mov r3, r3, lsr #8`
89			`strb r3, [r0]`
90
91			`strb r4, [r0]`
92			`mov r4, r4, lsr #8`
93			`strb r4, [r0]`
94			`mov r4, r4, lsr #8`
95			`strb r4, [r0]`
96			`mov r4, r4, lsr #8`
97			`strb r4, [r0]`
98
99			`.outsb_no_8: tst r2, #4`
100			`beq .outsb_no_4`
101
102			`ldr r3, [r1], #4`
103			`strb r3, [r0]`
104			`mov r3, r3, lsr #8`
105			`strb r3, [r0]`
106			`mov r3, r3, lsr #8`
107			`strb r3, [r0]`
108			`mov r3, r3, lsr #8`
109			`strb r3, [r0]`
110
111			`.outsb_no_4: ands r2, r2, #3`
112			`LOADREGS(eqfd, sp!, {r4 - r6, pc})`
113
114			`cmp r2, #2`
115			`ldrb r3, [r1], #1`
116			`strb r3, [r0]`
117			`ldrgeb r3, [r1], #1`
118			`strgeb r3, [r0]`
119			`ldrgtb r3, [r1]`
120			`strgtb r3, [r0]`
121
122			`LOADREGS(fd, sp!, {r4 - r6, pc})`

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[/] [or1k/] [trunk/] [linux/] [linux-2.4/] [arch/] [arm/] [lib/] [io-writesb.S] - Blame information for rev 1765