Annotation of sys/arch/arm/include/asm.h, Revision 1.1.1.1
1.1 nbrk 1: /* $OpenBSD: asm.h,v 1.1 2004/02/01 05:09:49 drahn Exp $ */
2: /* $NetBSD: asm.h,v 1.4 2001/07/16 05:43:32 matt Exp $ */
3:
4: /*
5: * Copyright (c) 1990 The Regents of the University of California.
6: * All rights reserved.
7: *
8: * This code is derived from software contributed to Berkeley by
9: * William Jolitz.
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. Neither the name of the University nor the names of its contributors
20: * may be used to endorse or promote products derived from this software
21: * without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
24: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
27: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33: * SUCH DAMAGE.
34: *
35: * from: @(#)asm.h 5.5 (Berkeley) 5/7/91
36: */
37:
38: #ifndef _ARM32_ASM_H_
39: #define _ARM32_ASM_H_
40:
41: #ifdef __ELF__
42: # define _C_LABEL(x) x
43: #else
44: # ifdef __STDC__
45: # define _C_LABEL(x) _ ## x
46: # else
47: # define _C_LABEL(x) _/**/x
48: # endif
49: #endif
50: #define _ASM_LABEL(x) x
51:
52: #ifdef __STDC__
53: # define __CONCAT(x,y) x ## y
54: # define __STRING(x) #x
55: #else
56: # define __CONCAT(x,y) x/**/y
57: # define __STRING(x) "x"
58: #endif
59:
60: #ifndef _ALIGN_TEXT
61: # define _ALIGN_TEXT .align 0
62: #endif
63:
64: /*
65: * gas/arm uses @ as a single comment character and thus cannot be used here
66: * Instead it recognised the # instead of an @ symbols in .type directives
67: * We define a couple of macros so that assembly code will not be dependant
68: * on one or the other.
69: */
70: #define _ASM_TYPE_FUNCTION #function
71: #define _ASM_TYPE_OBJECT #object
72: #define _ENTRY(x) \
73: .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x:
74:
75: #ifdef GPROF
76: # ifdef __ELF__
77: # define _PROF_PROLOGUE \
78: mov ip, lr; bl __mcount
79: # else
80: # define _PROF_PROLOGUE \
81: mov ip,lr; bl mcount
82: # endif
83: #else
84: # define _PROF_PROLOGUE
85: #endif
86:
87: #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
88: #define ENTRY_NP(y) _ENTRY(_C_LABEL(y))
89: #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
90: #define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y))
91:
92: #define ASMSTR .asciz
93:
94: #if defined(__ELF__) && defined(PIC)
95: #ifdef __STDC__
96: #define PIC_SYM(x,y) x ## ( ## y ## )
97: #else
98: #define PIC_SYM(x,y) x/**/(/**/y/**/)
99: #endif
100: #else
101: #define PIC_SYM(x,y) x
102: #endif
103:
104: #ifdef __ELF__
105: #define RCSID(x) .section ".ident"; .asciz x
106: #else
107: #define RCSID(x) .text; .asciz x
108: #endif
109:
110: #ifdef __ELF__
111: #define WEAK_ALIAS(alias,sym) \
112: .weak alias; \
113: alias = sym
114: #endif
115:
116: #ifdef __STDC__
117: #define WARN_REFERENCES(sym,msg) \
118: .stabs msg ## ,30,0,0,0 ; \
119: .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0
120: #elif defined(__ELF__)
121: #define WARN_REFERENCES(sym,msg) \
122: .stabs msg,30,0,0,0 ; \
123: .stabs __STRING(sym),1,0,0,0
124: #else
125: #define WARN_REFERENCES(sym,msg) \
126: .stabs msg,30,0,0,0 ; \
127: .stabs __STRING(_/**/sym),1,0,0,0
128: #endif /* __STDC__ */
129:
130: #endif /* !_ARM_ASM_H_ */
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