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
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