arch/arm/lib/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
  12 ENTRY(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
  18 floppy_fiqin_end:
  19
  20                 .global floppy_fiqout_end
  21 ENTRY(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
  29 floppy_fiqout_end: