/* * linux/arch/arm26/lib/io-writesl.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 <linux/linkage.h> #include <asm/assembler.h> #include <asm/hardware.h> ENTRY(__raw_writesl) teq r2, #0 @ do we have to check for the zero len? moveq pc, lr ands ip, r1, #3 bne 2f 1: ldr r3, [r1], #4 str r3, [r0] subs r2, r2, #1 bne 1b mov pc, lr 2: bic r1, r1, #3 cmp ip, #2 ldr r3, [r1], #4 bgt 4f blt 5f 3: mov ip, r3, lsr #16 ldr r3, [r1], #4 orr ip, ip, r3, lsl #16 str ip, [r0] subs r2, r2, #1 bne 3b mov pc, lr 4: mov ip, r3, lsr #24 ldr r3, [r1], #4 orr ip, ip, r3, lsl #8 str ip, [r0] subs r2, r2, #1 bne 4b mov pc, lr 5: mov ip, r3, lsr #8 ldr r3, [r1], #4 orr ip, ip, r3, lsl #24 str ip, [r0] subs r2, r2, #1 bne 5b mov pc, lr