/*
|
/*
|
* linux/arch/arm/lib/floppydma.S
|
* linux/arch/arm/lib/floppydma.S
|
*
|
*
|
* Copyright (C) 1995, 1996 Russell King
|
* Copyright (C) 1995, 1996 Russell King
|
*/
|
*/
|
|
|
#include
|
#include
|
.text
|
.text
|
|
|
.global _floppy_fiqin_start
|
.global _floppy_fiqin_start
|
.global _floppy_fiqin_end
|
.global _floppy_fiqin_end
|
_floppy_fiqin_start:
|
_floppy_fiqin_start:
|
subs r9, r9, #1
|
subs r9, r9, #1
|
ldrgtb r12, [r11, #-4]
|
ldrgtb r12, [r11, #-4]
|
ldrleb r12, [r11], #0
|
ldrleb r12, [r11], #0
|
strb r12, [r10], #1
|
strb r12, [r10], #1
|
subs pc, lr, #4
|
subs pc, lr, #4
|
_floppy_fiqin_end:
|
_floppy_fiqin_end:
|
|
|
.global _floppy_fiqout_start
|
.global _floppy_fiqout_start
|
.global _floppy_fiqout_end
|
.global _floppy_fiqout_end
|
_floppy_fiqout_start:
|
_floppy_fiqout_start:
|
subs r9, r9, #1
|
subs r9, r9, #1
|
ldrgeb r12, [r10], #1
|
ldrgeb r12, [r10], #1
|
movlt r12, #0
|
movlt r12, #0
|
strleb r12, [r11], #0
|
strleb r12, [r11], #0
|
subles pc, lr, #4
|
subles pc, lr, #4
|
strb r12, [r11, #-4]
|
strb r12, [r11, #-4]
|
subs pc, lr, #4
|
subs pc, lr, #4
|
_floppy_fiqout_end:
|
_floppy_fiqout_end:
|
|
|
@ Params:
|
@ Params:
|
@ r0 = length
|
@ r0 = length
|
@ r1 = address
|
@ r1 = address
|
@ r2 = floppy port
|
@ r2 = floppy port
|
@ Puts these into R9_fiq, R10_fiq, R11_fiq
|
@ Puts these into R9_fiq, R10_fiq, R11_fiq
|
.global _floppy_fiqsetup
|
.global _floppy_fiqsetup
|
_floppy_fiqsetup:
|
_floppy_fiqsetup:
|
mov ip, sp
|
mov ip, sp
|
stmfd sp!, {fp, ip, lr, pc}
|
stmfd sp!, {fp, ip, lr, pc}
|
sub fp, ip, #4
|
sub fp, ip, #4
|
MODE(r3,ip,I_BIT|F_BIT|DEFAULT_FIQ) @ disable FIQs, IRQs, FIQ mode
|
MODE(r3,ip,I_BIT|F_BIT|DEFAULT_FIQ) @ disable FIQs, IRQs, FIQ mode
|
mov r0, r0
|
mov r0, r0
|
mov r9, r0
|
mov r9, r0
|
mov r10, r1
|
mov r10, r1
|
mov r11, r2
|
mov r11, r2
|
RESTOREMODE(r3) @ back to normal
|
RESTOREMODE(r3) @ back to normal
|
mov r0, r0
|
mov r0, r0
|
LOADREGS(ea,fp,{fp, sp, pc})
|
LOADREGS(ea,fp,{fp, sp, pc})
|
|
|
.global _floppy_fiqresidual
|
.global _floppy_fiqresidual
|
_floppy_fiqresidual:
|
_floppy_fiqresidual:
|
mov ip, sp
|
mov ip, sp
|
stmfd sp!, {fp, ip, lr, pc}
|
stmfd sp!, {fp, ip, lr, pc}
|
sub fp, ip, #4
|
sub fp, ip, #4
|
MODE(r3,ip,I_BIT|F_BIT|DEFAULT_FIQ) @ disable FIQs, IRQs, FIQ mode
|
MODE(r3,ip,I_BIT|F_BIT|DEFAULT_FIQ) @ disable FIQs, IRQs, FIQ mode
|
mov r0, r0
|
mov r0, r0
|
mov r0, r9
|
mov r0, r9
|
RESTOREMODE(r3)
|
RESTOREMODE(r3)
|
mov r0, r0
|
mov r0, r0
|
LOADREGS(ea,fp,{fp, sp, pc})
|
LOADREGS(ea,fp,{fp, sp, pc})
|
|
|
