xref: /netbsd-src/sys/arch/vax/include/asm.h (revision d48f14661dda8638fee055ba15d35bdfb29b9fa8)
1 /*	$NetBSD: asm.h,v 1.18 2006/01/20 22:02:41 christos Exp $ */
2 /*
3  * Copyright (c) 1982, 1993
4  *	The Regents of the University of California.  All rights reserved.
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  * 3. Neither the name of the University nor the names of its contributors
15  *    may be used to endorse or promote products derived from this software
16  *    without specific prior written permission.
17  *
18  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
19  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28  * SUCH DAMAGE.
29  *
30  *	@(#)DEFS.h	8.1 (Berkeley) 6/4/93
31  */
32 
33 #ifndef _VAX_ASM_H_
34 #define _VAX_ASM_H_
35 
36 #define R0	0x001
37 #define R1	0x002
38 #define R2	0x004
39 #define R3	0x008
40 #define R4	0x010
41 #define R5	0x020
42 #define R6	0x040
43 #define R7 	0x080
44 #define R8	0x100
45 #define R9	0x200
46 #define R10	0x400
47 #define R11	0x800
48 
49 #ifdef __ELF__
50 # define _C_LABEL(x)	x
51 #else
52 # ifdef __STDC__
53 #  define _C_LABEL(x)	_ ## x
54 # else
55 #  define _C_LABEL(x)	_/**/x
56 # endif
57 #endif
58 
59 #define	_ASM_LABEL(x)	x
60 
61 #ifdef __STDC__
62 # define __CONCAT(x,y)	x ## y
63 # define __STRING(x)	#x
64 #else
65 # define __CONCAT(x,y)	x/**/y
66 # define __STRING(x)	"x"
67 #endif
68 
69 /* let kernels and others override entrypoint alignment */
70 #ifndef _ALIGN_TEXT
71 # ifdef __ELF__
72 #  define _ALIGN_TEXT .align 4
73 # else
74 #  define _ALIGN_TEXT .align 2
75 # endif
76 #endif
77 
78 #define	_ENTRY(x, regs) \
79 	.text; _ALIGN_TEXT; .globl x; .type x@function; x: .word regs
80 
81 #ifdef GPROF
82 # ifdef __ELF__
83 #  define _PROF_PROLOGUE	\
84 	.data; 1:; .long 0; .text; moval 1b,%r0; jsb _ASM_LABEL(__mcount)
85 # else
86 #  define _PROF_PROLOGUE	\
87 	.data; 1:; .long 0; .text; moval 1b,r0; jsb _ASM_LABEL(mcount)
88 # endif
89 #else
90 # define _PROF_PROLOGUE
91 #endif
92 
93 #define ENTRY(x, regs)		_ENTRY(_C_LABEL(x), regs); _PROF_PROLOGUE
94 #define NENTRY(x, regs)		_ENTRY(_C_LABEL(x), regs)
95 #define ASENTRY(x, regs)	_ENTRY(_ASM_LABEL(x), regs); _PROF_PROLOGUE
96 
97 #define ALTENTRY(x)		.globl _C_LABEL(x); _C_LABEL(x):
98 #define RCSID(x)		.text; .asciz x
99 
100 #ifdef __ELF__
101 #define	WEAK_ALIAS(alias,sym)						\
102 	.weak alias;							\
103 	alias = sym
104 #endif
105 /*
106  * STRONG_ALIAS: create a strong alias.
107  */
108 #define STRONG_ALIAS(alias,sym)						\
109 	.globl alias;							\
110 	alias = sym
111 
112 #ifdef __STDC__
113 #define	WARN_REFERENCES(sym,msg)					\
114 	.stabs msg ## ,30,0,0,0 ;					\
115 	.stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0
116 #else
117 #define	WARN_REFERENCES(sym,msg)					\
118 	.stabs msg,30,0,0,0 ;						\
119 	.stabs __STRING(_C_LABEL(sym)),1,0,0,0
120 #endif /* __STDC__ */
121 
122 #endif /* !_VAX_ASM_H_ */
123