mirror of https://gitee.com/openkylin/linux.git
53 lines
1.3 KiB
ArmAsm
53 lines
1.3 KiB
ArmAsm
/* insl_ns.S: input array of 4b words from device port without byte swapping
|
|
*
|
|
* Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
|
|
* Written by David Howells (dhowells@redhat.com)
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version
|
|
* 2 of the License, or (at your option) any later version.
|
|
*/
|
|
|
|
|
|
.text
|
|
.p2align 4
|
|
|
|
###############################################################################
|
|
#
|
|
# void __insl_ns(unsigned int port, void *buf, int n)
|
|
#
|
|
###############################################################################
|
|
.globl __insl_ns
|
|
.type __insl_ns,@function
|
|
__insl_ns:
|
|
andicc.p gr9,#3,gr0,icc0
|
|
setlos #4,gr4
|
|
bne icc0,#0,__insl_ns_misaligned
|
|
subi gr9,#4,gr9
|
|
0:
|
|
ldi.p @(gr8,#0),gr5
|
|
subicc gr10,#1,gr10,icc0
|
|
stu.p gr5,@(gr9,gr4)
|
|
bhi icc0,#2,0b
|
|
bralr
|
|
|
|
__insl_ns_misaligned:
|
|
subi.p gr9,#1,gr9
|
|
setlos #1,gr4
|
|
0:
|
|
ldi @(gr8,#0),gr5
|
|
|
|
srli gr5,#24,gr6
|
|
stbu.p gr6,@(gr9,gr4)
|
|
srli gr5,#16,gr6
|
|
stbu.p gr6,@(gr9,gr4)
|
|
srli gr5,#8,gr6
|
|
stbu.p gr6,@(gr9,gr4)
|
|
subicc gr10,#1,gr10,icc0
|
|
stbu.p gr5,@(gr9,gr4)
|
|
bhi icc0,#2,0b
|
|
bralr
|
|
|
|
.size __insl_ns, .-__insl_ns
|