FreeBSD/Linux Kernel Cross Reference
sys/arm/include/asm.h
1 /* $NetBSD: asm.h,v 1.5 2003/08/07 16:26:53 agc Exp $ */
2
3 /*-
4 * Copyright (c) 1990 The Regents of the University of California.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * William Jolitz.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
21 *
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 *
34 * from: @(#)asm.h 5.5 (Berkeley) 5/7/91
35 *
36 * $FreeBSD: src/sys/arm/include/asm.h,v 1.7 2007/10/13 12:04:10 cognet Exp $
37 */
38
39 #ifndef _MACHINE_ASM_H_
40 #define _MACHINE_ASM_H_
41 #include <sys/cdefs.h>
42
43 #ifdef __ELF__
44 # define _C_LABEL(x) x
45 #else
46 # ifdef __STDC__
47 # define _C_LABEL(x) _ ## x
48 # else
49 # define _C_LABEL(x) _/**/x
50 # endif
51 #endif
52 #define _ASM_LABEL(x) x
53
54 #ifndef _JB_MAGIC__SETJMP
55 #define _JB_MAGIC__SETJMP 0x4278f500
56 #define _JB_MAGIC_SETJMP 0x4278f501
57 #endif
58
59 #define I32_bit (1 << 7) /* IRQ disable */
60 #define F32_bit (1 << 6) /* FIQ disable */
61
62 #define CPU_CONTROL_32BP_ENABLE 0x00000010 /* P: 32-bit exception handlers */
63 #define CPU_CONTROL_32BD_ENABLE 0x00000020 /* D: 32-bit addressing */
64
65 #ifndef _ALIGN_TEXT
66 # define _ALIGN_TEXT .align 0
67 #endif
68
69 /*
70 * gas/arm uses @ as a single comment character and thus cannot be used here
71 * Instead it recognised the # instead of an @ symbols in .type directives
72 * We define a couple of macros so that assembly code will not be dependant
73 * on one or the other.
74 */
75 #define _ASM_TYPE_FUNCTION #function
76 #define _ASM_TYPE_OBJECT #object
77 #define GLOBAL(X) .globl x
78 #define _ENTRY(x) \
79 .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x:
80
81 #ifdef GPROF
82 # define _PROF_PROLOGUE \
83 mov ip, lr; bl __mcount
84 #else
85 # define _PROF_PROLOGUE
86 #endif
87
88 #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
89 #define ENTRY_NP(y) _ENTRY(_C_LABEL(y))
90 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
91 #define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y))
92
93 #define ASMSTR .asciz
94
95 #if defined(__ELF__) && defined(PIC)
96 #ifdef __STDC__
97 #define PIC_SYM(x,y) x ## ( ## y ## )
98 #else
99 #define PIC_SYM(x,y) x/**/(/**/y/**/)
100 #endif
101 #else
102 #define PIC_SYM(x,y) x
103 #endif
104
105 #undef __FBSDID
106 #if !defined(lint) && !defined(STRIP_FBSDID)
107 #define __FBSDID(s) .ident s
108 #else
109 #define __FBSDID(s) /* nothing */
110 #endif
111
112
113 #ifdef __ELF__
114 #define WEAK_ALIAS(alias,sym) \
115 .weak alias; \
116 alias = sym
117 #endif
118
119 #ifdef __STDC__
120 #define WARN_REFERENCES(sym,msg) \
121 .stabs msg ## ,30,0,0,0 ; \
122 .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0
123 #elif defined(__ELF__)
124 #define WARN_REFERENCES(sym,msg) \
125 .stabs msg,30,0,0,0 ; \
126 .stabs __STRING(sym),1,0,0,0
127 #else
128 #define WARN_REFERENCES(sym,msg) \
129 .stabs msg,30,0,0,0 ; \
130 .stabs __STRING(_/**/sym),1,0,0,0
131 #endif /* __STDC__ */
132
133
134 #if defined (__ARM_ARCH_6__) || defined (__ARM_ARCH_6J__)
135 #define _ARM_ARCH_6
136 #endif
137
138 #if defined (_ARM_ARCH_6) || defined (__ARM_ARCH_5__) || \
139 defined (__ARM_ARCH_5T__) || defined (__ARM_ARCH_5TE__) || \
140 defined (__ARM_ARCH_5TEJ__) || defined (__ARM_ARCH_5E__)
141 #define _ARM_ARCH_5
142 #endif
143
144 #if defined (_ARM_ARCH_6) || defined(__ARM_ARCH_5TE__) || \
145 defined(__ARM_ARCH_5TEJ__) || defined(__ARM_ARCH_5E__)
146 #define _ARM_ARCH_5E
147 #endif
148
149 #if defined (_ARM_ARCH_5) || defined (__ARM_ARCH_4T__)
150 #define _ARM_ARCH_4T
151 #endif
152
153
154 #if defined (_ARM_ARCH_4T)
155 # define RET bx lr
156 # define RETeq bxeq lr
157 # define RETne bxne lr
158 # ifdef __STDC__
159 # define RETc(c) bx##c lr
160 # else
161 # define RETc(c) bx/**/c lr
162 # endif
163 #else
164 # define RET mov pc, lr
165 # define RETeq moveq pc, lr
166 # define RETne movne pc, lr
167 # ifdef __STDC__
168 # define RETc(c) mov##c pc, lr
169 # else
170 # define RETc(c) mov/**/c pc, lr
171 # endif
172 #endif
173
174 #endif /* !_MACHINE_ASM_H_ */
175 Cache object: ba18ca91a18ca10be6e75d0c4becd082
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