1 /*-
2 * Copyright (c) 2001 Jake Burkholder.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 *
26 * $FreeBSD: releng/6.0/sys/sparc64/include/asmacros.h 130164 2004-06-06 21:26:49Z phk $
27 */
28
29 #ifndef _MACHINE_ASMACROS_H_
30 #define _MACHINE_ASMACROS_H_
31
32 #ifdef _KERNEL
33
34 /*
35 * Normal and alternate %g6 point to the pcb of the current process. Normal,
36 & alternate and interrupt %g7 point to per-cpu data.
37 */
38 #define PCB_REG %g6
39 #define PCPU_REG %g7
40
41 /*
42 * Alternate %g5 points to a per-cpu panic stack, which is used as a last
43 * resort, and for temporarily saving alternate globals.
44 */
45 #define ASP_REG %g5
46
47 #ifdef LOCORE
48
49 /*
50 * Atomically decrement an integer in memory.
51 */
52 #define ATOMIC_DEC_INT(r1, r2, r3) \
53 lduw [r1], r2 ; \
54 9: sub r2, 1, r3 ; \
55 casa [r1] ASI_N, r2, r3 ; \
56 cmp r2, r3 ; \
57 bne,pn %icc, 9b ; \
58 mov r3, r2
59
60 /*
61 * Atomically increment an integer in memory.
62 */
63 #define ATOMIC_INC_INT(r1, r2, r3) \
64 lduw [r1], r2 ; \
65 9: add r2, 1, r3 ; \
66 casa [r1] ASI_N, r2, r3 ; \
67 cmp r2, r3 ; \
68 bne,pn %icc, 9b ; \
69 mov r3, r2
70
71 /*
72 * Atomically increment an u_long in memory.
73 */
74 #define ATOMIC_INC_ULONG(r1, r2, r3) \
75 ldx [r1], r2 ; \
76 9: add r2, 1, r3 ; \
77 casxa [r1] ASI_N, r2, r3 ; \
78 cmp r2, r3 ; \
79 bne,pn %icc, 9b ; \
80 mov r3, r2
81
82 /*
83 * Atomically clear a number of bits of an integer in memory.
84 */
85 #define ATOMIC_CLEAR_INT(r1, r2, r3, bits) \
86 lduw [r1], r2 ; \
87 9: andn r2, bits, r3 ; \
88 casa [r1] ASI_N, r2, r3 ; \
89 cmp r2, r3 ; \
90 bne,pn %icc, 9b ; \
91 mov r3, r2
92
93 #define PCPU(member) PCPU_REG + PC_ ## member
94 #define PCPU_ADDR(member, reg) \
95 add PCPU_REG, PC_ ## member, reg
96
97 #define DEBUGGER() \
98 ta %xcc, 1
99
100 #define PANIC(msg, r1) \
101 .sect .rodata ; \
102 9: .asciz msg ; \
103 .previous ; \
104 SET(9b, r1, %o0) ; \
105 call panic ; \
106 nop
107
108 #ifdef INVARIANTS
109 #define KASSERT(r1, msg) \
110 brnz r1, 8f ; \
111 nop ; \
112 PANIC(msg, r1) ; \
113 8:
114 #else
115 #define KASSERT(r1, msg)
116 #endif
117
118 #define PUTS(msg, r1) \
119 .sect .rodata ; \
120 9: .asciz msg ; \
121 .previous ; \
122 SET(9b, r1, %o0) ; \
123 call printf ; \
124 nop
125
126 #define _ALIGN_DATA .align 8
127
128 #define DATA(name) \
129 .data ; \
130 _ALIGN_DATA ; \
131 .globl name ; \
132 .type name, @object ; \
133 name:
134
135 #define EMPTY
136
137 #endif /* LOCORE */
138
139 #endif /* _KERNEL */
140
141 #endif /* !_MACHINE_ASMACROS_H_ */
Cache object: 2ab0eced8784875eff6a931a850b3f20
|