1 /* $NetBSD: asm.h,v 1.5 2003/08/07 16:26:53 agc Exp $ */
4 * Copyright (c) 1990 The Regents of the University of California.
7 * This code is derived from software contributed to Berkeley by
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34 * from: @(#)asm.h 5.5 (Berkeley) 5/7/91
39 #ifndef _MACHINE_ASM_H_
40 #define _MACHINE_ASM_H_
41 #include <sys/cdefs.h>
44 # define _C_LABEL(x) x
47 # define _C_LABEL(x) _ ## x
49 # define _C_LABEL(x) _/**/x
52 #define _ASM_LABEL(x) x
54 #ifndef _JB_MAGIC__SETJMP
55 #define _JB_MAGIC__SETJMP 0x4278f500
56 #define _JB_MAGIC_SETJMP 0x4278f501
59 #define I32_bit (1 << 7) /* IRQ disable */
60 #define F32_bit (1 << 6) /* FIQ disable */
62 #define CPU_CONTROL_32BP_ENABLE 0x00000010 /* P: 32-bit exception handlers */
63 #define CPU_CONTROL_32BD_ENABLE 0x00000020 /* D: 32-bit addressing */
66 # define _ALIGN_TEXT .align 0
70 #define STOP_UNWINDING .cantunwind
71 #define _FNSTART .fnstart
74 #define STOP_UNWINDING
80 * gas/arm uses @ as a single comment character and thus cannot be used here
81 * Instead it recognised the # instead of an @ symbols in .type directives
82 * We define a couple of macros so that assembly code will not be dependant
83 * on one or the other.
85 #define _ASM_TYPE_FUNCTION #function
86 #define _ASM_TYPE_OBJECT #object
87 #define GLOBAL(X) .globl x
89 .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x: _FNSTART
91 #define END(x) .size x, . - x; _FNEND
94 # define _PROF_PROLOGUE \
95 mov ip, lr; bl __mcount
97 # define _PROF_PROLOGUE
100 #define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
101 #define ENTRY_NP(y) _ENTRY(_C_LABEL(y))
102 #define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
103 #define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y))
105 #define ASMSTR .asciz
107 #if defined(__ELF__) && defined(PIC)
109 #define PIC_SYM(x,y) x ## ( ## y ## )
111 #define PIC_SYM(x,y) x/**/(/**/y/**/)
114 #define PIC_SYM(x,y) x
118 #if !defined(lint) && !defined(STRIP_FBSDID)
119 #define __FBSDID(s) .ident s
121 #define __FBSDID(s) /* nothing */
126 #define WEAK_ALIAS(alias,sym) \
132 #define WARN_REFERENCES(sym,msg) \
133 .stabs msg ## ,30,0,0,0 ; \
134 .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0
135 #elif defined(__ELF__)
136 #define WARN_REFERENCES(sym,msg) \
137 .stabs msg,30,0,0,0 ; \
138 .stabs __STRING(sym),1,0,0,0
140 #define WARN_REFERENCES(sym,msg) \
141 .stabs msg,30,0,0,0 ; \
142 .stabs __STRING(_/**/sym),1,0,0,0
143 #endif /* __STDC__ */
145 /* Exactly one of the __ARM_ARCH_*__ macros will be defined by the compiler. */
146 /* The _ARM_ARCH_* macros are deprecated and will be removed soon. */
147 /* This should be moved into another header so it can be used in
148 * both asm and C code. machine/asm.h cannot be included in C code. */
149 #if defined (__ARM_ARCH_7__) || defined (__ARM_ARCH_7A__)
151 #define _HAVE_ARMv7_INSTRUCTIONS 1
154 #if defined (_HAVE_ARMv7_INSTRUCTIONS) || defined (__ARM_ARCH_6__) || \
155 defined (__ARM_ARCH_6J__) || defined (__ARM_ARCH_6K__) || \
156 defined (__ARM_ARCH_6Z__) || defined (__ARM_ARCH_6ZK__)
158 #define _HAVE_ARMv6_INSTRUCTIONS 1
161 #if defined (_HAVE_ARMv6_INSTRUCTIONS) || defined (__ARM_ARCH_5TE__) || \
162 defined (__ARM_ARCH_5TEJ__) || defined (__ARM_ARCH_5E__)
164 #define _HAVE_ARMv5E_INSTRUCTIONS 1
167 #if defined (_HAVE_ARMv5E_INSTRUCTIONS) || defined (__ARM_ARCH_5__) || \
168 defined (__ARM_ARCH_5T__)
170 #define _HAVE_ARMv5_INSTRUCTIONS 1
173 #if defined (_HAVE_ARMv5_INSTRUCTIONS) || defined (__ARM_ARCH_4T__)
175 #define _HAVE_ARMv4T_INSTRUCTIONS 1
178 /* FreeBSD requires ARMv4, so this is always set. */
179 #define _HAVE_ARMv4_INSTRUCTIONS 1
181 #if defined (_HAVE_ARMv4T_INSTRUCTIONS)
183 # define RETeq bxeq lr
184 # define RETne bxne lr
185 # define RETc(c) bx##c lr
187 # define RET mov pc, lr
188 # define RETeq moveq pc, lr
189 # define RETne movne pc, lr
190 # define RETc(c) mov##c pc, lr
193 #endif /* !_MACHINE_ASM_H_ */