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Annotation of sys/arch/sgi/localbus/macectrl.S, Revision 1.1.1.1

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