2 * linux/arch/arm/lib/io-writesw-armv4.S
4 * Copyright (C) 1995-2000 Russell King
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.
10 #include <linux/linkage.h>
11 #include <asm/assembler.h>
12 #include <asm/export.h>
26 .Loutsw_align: movs ip, r1, lsl #31
39 stmfd sp!, {r4, r5, lr}
44 .Loutsw_8_lp: ldmia r1!, {r3, r4, r5, ip}
52 .Lno_outsw_8: tst r2, #4
59 .Lno_outsw_4: movs r2, r2, lsl #31
65 .Lno_outsw_2: ldrneh r3, [r1]
68 ldmfd sp!, {r4, r5, pc}
71 #define pull_hbyte0 lsl #8
72 #define push_hbyte1 lsr #24
74 #define pull_hbyte0 lsr #24
75 #define push_hbyte1 lsl #8
79 ARM( ldr r3, [r1, -r3]! )
80 THUMB( rsb r3, r3, #0 )
81 THUMB( ldr r3, [r1, r3] )
90 2: mov ip, r3, pull_hbyte0
93 orr ip, ip, r3, push_hbyte1
98 3: movne ip, r3, lsr #8
101 ENDPROC(__raw_writesw)
102 EXPORT_SYMBOL(__raw_writesw)