ia64/linux-2.6.18-xen.hg

view arch/arm26/lib/io-readsw.S @ 647:a5bb490065f6

Fix the build after public header sync.
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Wed Aug 13 14:01:49 2008 +0100 (2008-08-13)
parents 831230e53067
children
line source
1 /*
2 * linux/arch/arm26/lib/io-readsw.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 <linux/linkage.h>
11 #include <asm/assembler.h>
12 #include <asm/hardware.h>
14 .insw_bad_alignment:
15 adr r0, .insw_bad_align_msg
16 mov r2, lr
17 b panic
18 .insw_bad_align_msg:
19 .asciz "insw: bad buffer alignment (0x%p, lr=0x%08lX)\n"
20 .align
22 .insw_align: tst r1, #1
23 bne .insw_bad_alignment
25 ldr r3, [r0]
26 strb r3, [r1], #1
27 mov r3, r3, lsr #8
28 strb r3, [r1], #1
30 subs r2, r2, #1
31 RETINSTR(moveq, pc, lr)
33 ENTRY(__raw_readsw)
34 teq r2, #0 @ do we have to check for the zero len?
35 moveq pc, lr
36 tst r1, #3
37 bne .insw_align
39 .insw_aligned: mov ip, #0xff
40 orr ip, ip, ip, lsl #8
41 stmfd sp!, {r4, r5, r6, lr}
43 subs r2, r2, #8
44 bmi .no_insw_8
46 .insw_8_lp: ldr r3, [r0]
47 and r3, r3, ip
48 ldr r4, [r0]
49 orr r3, r3, r4, lsl #16
51 ldr r4, [r0]
52 and r4, r4, ip
53 ldr r5, [r0]
54 orr r4, r4, r5, lsl #16
56 ldr r5, [r0]
57 and r5, r5, ip
58 ldr r6, [r0]
59 orr r5, r5, r6, lsl #16
61 ldr r6, [r0]
62 and r6, r6, ip
63 ldr lr, [r0]
64 orr r6, r6, lr, lsl #16
66 stmia r1!, {r3 - r6}
68 subs r2, r2, #8
69 bpl .insw_8_lp
71 tst r2, #7
72 LOADREGS(eqfd, sp!, {r4, r5, r6, pc})
74 .no_insw_8: tst r2, #4
75 beq .no_insw_4
77 ldr r3, [r0]
78 and r3, r3, ip
79 ldr r4, [r0]
80 orr r3, r3, r4, lsl #16
82 ldr r4, [r0]
83 and r4, r4, ip
84 ldr r5, [r0]
85 orr r4, r4, r5, lsl #16
87 stmia r1!, {r3, r4}
89 .no_insw_4: tst r2, #2
90 beq .no_insw_2
92 ldr r3, [r0]
93 and r3, r3, ip
94 ldr r4, [r0]
95 orr r3, r3, r4, lsl #16
97 str r3, [r1], #4
99 .no_insw_2: tst r2, #1
100 ldrne r3, [r0]
101 strneb r3, [r1], #1
102 movne r3, r3, lsr #8
103 strneb r3, [r1]
105 LOADREGS(fd, sp!, {r4, r5, r6, pc})