Subversion Repositories or1k_soc_on_altera_embedded_dev_kit

/* 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