diff options
Diffstat (limited to 'arch/arm/mach-rpc/floppydma.S')
| -rw-r--r-- | arch/arm/mach-rpc/floppydma.S | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/arch/arm/mach-rpc/floppydma.S b/arch/arm/mach-rpc/floppydma.S new file mode 100644 index 0000000000..6698b83050 --- /dev/null +++ b/arch/arm/mach-rpc/floppydma.S @@ -0,0 +1,29 @@ +/* SPDX-License-Identifier: GPL-2.0-only */ +/* + * linux/arch/arm/lib/floppydma.S + * + * Copyright (C) 1995, 1996 Russell King + */ +#include <linux/linkage.h> +#include <asm/assembler.h> + .text + + .global floppy_fiqin_end +ENTRY(floppy_fiqin_start) + subs r9, r9, #1 + ldrbgt r12, [r11, #-4] + ldrble r12, [r11], #0 + strb r12, [r10], #1 + subs pc, lr, #4 +floppy_fiqin_end: + + .global floppy_fiqout_end +ENTRY(floppy_fiqout_start) + subs r9, r9, #1 + ldrbge r12, [r10], #1 + movlt r12, #0 + strble r12, [r11], #0 + subsle pc, lr, #4 + strb r12, [r11, #-4] + subs pc, lr, #4 +floppy_fiqout_end: |