floppydma.S

 1/* SPDX-License-Identifier: GPL-2.0-only */
 2/*
 3 *  linux/arch/arm/lib/floppydma.S
 4 *
 5 *  Copyright (C) 1995, 1996 Russell King
 6 */
 7#include <linux/linkage.h>
 8#include <asm/assembler.h>
 9		.text
10
11		.global	floppy_fiqin_end
12ENTRY(floppy_fiqin_start)
13		subs	r9, r9, #1
14		ldrbgt	r12, [r11, #-4]
15		ldrble	r12, [r11], #0
16		strb	r12, [r10], #1
17		subs	pc, lr, #4
18floppy_fiqin_end:
19
20		.global	floppy_fiqout_end
21ENTRY(floppy_fiqout_start)
22		subs	r9, r9, #1
23		ldrbge	r12, [r10], #1
24		movlt	r12, #0
25		strble	r12, [r11], #0
26		subsle	pc, lr, #4
27		strb	r12, [r11, #-4]
28		subs	pc, lr, #4
29floppy_fiqout_end: