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Annotation of sys/arch/sgi/localbus/macectrl.S, Revision 1.1

1.1     ! nbrk        1: /*     $OpenBSD: macectrl.S,v 1.5 2004/09/27 18:52:01 pefo Exp $ */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 2004 Opsycon AB  (www.opsycon.se / www.opsycon.com)
        !             5:  *
        !             6:  * Redistribution and use in source and binary forms, with or without
        !             7:  * modification, are permitted provided that the following conditions
        !             8:  * are met:
        !             9:  * 1. Redistributions of source code must retain the above copyright
        !            10:  *    notice, this list of conditions and the following disclaimer.
        !            11:  * 2. Redistributions in binary form must reproduce the above copyright
        !            12:  *    notice, this list of conditions and the following disclaimer in the
        !            13:  *    documentation and/or other materials provided with the distribution.
        !            14:  *
        !            15:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS
        !            16:  * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
        !            17:  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            18:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
        !            19:  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            20:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            21:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            22:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            23:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            24:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            25:  * SUCH DAMAGE.
        !            26:  *
        !            27:  */
        !            28: #include <machine/param.h>
        !            29: #include <machine/psl.h>
        !            30: #include <machine/asm.h>
        !            31: #include <machine/cpu.h>
        !            32: #include <machine/regnum.h>
        !            33:
        !            34: #include "assym.h"
        !            35:
        !            36:        .set    mips3
        !            37:        .set    noreorder               # Noreorder is default style!
        !            38:
        !            39: /*
        !            40:  *  Update the HW interrupt mask anding the argument with the
        !            41:  *  interrupt mask for enabled interrupts. Only enabled interrupt
        !            42:  *  sources can be unmasked.
        !            43:  */
        !            44:        .globl  hw_setintrmask
        !            45: LEAF(hw_setintrmask, 0)
        !            46:        PTR_L   v1, hwmask_addr
        !            47:        lw      v0, mace_intem
        !            48:        not     a0, a0
        !            49:        beqz    v1, 1f                  # addr not set, skip.
        !            50:        and     v0, a0
        !            51:        jr      ra
        !            52:        sd      v0, 0(v1)
        !            53: 1:
        !            54:        jr      ra
        !            55:        nop
        !            56: END(hw_setintrmask)
        !            57:
        !            58:        .data
        !            59:        .globl  hwmask_addr
        !            60: hwmask_addr: PTR_VAL 0