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 *
| 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 *
|
57#define STOP_UNWINDING .cantunwind
58#define _FNSTART .fnstart
59#define _FNEND .fnend
60#else
61#define STOP_UNWINDING
62#define _FNSTART
63#define _FNEND
64#endif
65
66/*
67 * gas/arm uses @ as a single comment character and thus cannot be used here
68 * Instead it recognised the # instead of an @ symbols in .type directives
69 * We define a couple of macros so that assembly code will not be dependent
70 * on one or the other.
71 */
72#define _ASM_TYPE_FUNCTION #function
73#define _ASM_TYPE_OBJECT #object
74#define GLOBAL(X) .globl x
75#define _ENTRY(x) \
76 .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x: _FNSTART
77#define _END(x) .size x, . - x; _FNEND
78
79/*
80 * EENTRY()/EEND() mark "extra" entry/exit points from a function.
81 * The unwind info cannot handle the concept of a nested function, or a function
82 * with multiple .fnstart directives, but some of our assembler code is written
83 * with multiple labels to allow entry at several points. The EENTRY() macro
84 * defines such an extra entry point without a new .fnstart, so that it's
85 * basically just a label that you can jump to. The EEND() macro does nothing
86 * at all, except document the exit point associated with the same-named entry.
87 */
88#define _EENTRY(x) .globl x; .type x,_ASM_TYPE_FUNCTION; x:
89#define _EEND(x) /* nothing */
90
91#ifdef GPROF
92# define _PROF_PROLOGUE \
93 mov ip, lr; bl __mcount
94#else
95# define _PROF_PROLOGUE
96#endif
97
98#define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
99#define EENTRY(y) _EENTRY(_C_LABEL(y)); _PROF_PROLOGUE
100#define ENTRY_NP(y) _ENTRY(_C_LABEL(y))
101#define EENTRY_NP(y) _EENTRY(_C_LABEL(y))
102#define END(y) _END(_C_LABEL(y))
103#define EEND(y)
104#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
105#define ASEENTRY(y) _EENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
106#define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y))
107#define ASEENTRY_NP(y) _EENTRY(_ASM_LABEL(y))
108#define ASEND(y) _END(_ASM_LABEL(y))
109#define ASEEND(y)
110
111#define ASMSTR .asciz
112
113#if defined(PIC)
114#define PLT_SYM(x) PIC_SYM(x, PLT)
115#define GOT_SYM(x) PIC_SYM(x, GOT)
116#define GOT_GET(x,got,sym) \
117 ldr x, sym; \
118 ldr x, [x, got]
119#define GOT_INIT(got,gotsym,pclabel) \
120 ldr got, gotsym; \
121 add got, got, pc; \
122 pclabel:
123#define GOT_INITSYM(gotsym,pclabel) \
124 gotsym: .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) + (. - (pclabel+4))
125
126#ifdef __STDC__
127#define PIC_SYM(x,y) x ## ( ## y ## )
128#else
129#define PIC_SYM(x,y) x/**/(/**/y/**/)
130#endif
131
132#else
133#define PLT_SYM(x) x
134#define GOT_SYM(x) x
135#define GOT_GET(x,got,sym) \
136 ldr x, sym;
137#define GOT_INIT(got,gotsym,pclabel)
138#define GOT_INITSYM(gotsym,pclabel)
139#define PIC_SYM(x,y) x
140#endif /* PIC */
141
142#undef __FBSDID
143#if !defined(lint) && !defined(STRIP_FBSDID)
144#define __FBSDID(s) .ident s
145#else
146#define __FBSDID(s) /* nothing */
147#endif
148
149
150#define WEAK_ALIAS(alias,sym) \
151 .weak alias; \
152 alias = sym
153
154#ifdef __STDC__
155#define WARN_REFERENCES(sym,msg) \
156 .stabs msg ## ,30,0,0,0 ; \
157 .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0
158#else
159#define WARN_REFERENCES(sym,msg) \
160 .stabs msg,30,0,0,0 ; \
161 .stabs __STRING(sym),1,0,0,0
162#endif /* __STDC__ */
163
164/* Exactly one of the __ARM_ARCH_*__ macros will be defined by the compiler. */
165/* The _ARM_ARCH_* macros are deprecated and will be removed soon. */
166/* This should be moved into another header so it can be used in
167 * both asm and C code. machine/asm.h cannot be included in C code. */
168#if defined (__ARM_ARCH_7__) || defined (__ARM_ARCH_7A__)
169#define _ARM_ARCH_7
170#define _HAVE_ARMv7_INSTRUCTIONS 1
171#endif
172
173#if defined (_HAVE_ARMv7_INSTRUCTIONS) || defined (__ARM_ARCH_6__) || \
174 defined (__ARM_ARCH_6J__) || defined (__ARM_ARCH_6K__) || \
175 defined (__ARM_ARCH_6Z__) || defined (__ARM_ARCH_6ZK__)
176#define _ARM_ARCH_6
177#define _HAVE_ARMv6_INSTRUCTIONS 1
178#endif
179
180#if defined (_HAVE_ARMv6_INSTRUCTIONS) || defined (__ARM_ARCH_5TE__) || \
181 defined (__ARM_ARCH_5TEJ__) || defined (__ARM_ARCH_5E__)
182#define _ARM_ARCH_5E
183#define _HAVE_ARMv5E_INSTRUCTIONS 1
184#endif
185
186#if defined (_HAVE_ARMv5E_INSTRUCTIONS) || defined (__ARM_ARCH_5__) || \
187 defined (__ARM_ARCH_5T__)
188#define _ARM_ARCH_5
189#define _HAVE_ARMv5_INSTRUCTIONS 1
190#endif
191
192#if defined (_HAVE_ARMv5_INSTRUCTIONS) || defined (__ARM_ARCH_4T__)
193#define _ARM_ARCH_4T
194#define _HAVE_ARMv4T_INSTRUCTIONS 1
195#endif
196
197/* FreeBSD requires ARMv4, so this is always set. */
198#define _HAVE_ARMv4_INSTRUCTIONS 1
199
200#if defined (_HAVE_ARMv4T_INSTRUCTIONS)
201# define RET bx lr
202# define RETeq bxeq lr
203# define RETne bxne lr
204# define RETc(c) bx##c lr
205#else
206# define RET mov pc, lr
207# define RETeq moveq pc, lr
208# define RETne movne pc, lr
209# define RETc(c) mov##c pc, lr
210#endif
211
212#endif /* !_MACHINE_ASM_H_ */
| 57#define STOP_UNWINDING .cantunwind
58#define _FNSTART .fnstart
59#define _FNEND .fnend
60#else
61#define STOP_UNWINDING
62#define _FNSTART
63#define _FNEND
64#endif
65
66/*
67 * gas/arm uses @ as a single comment character and thus cannot be used here
68 * Instead it recognised the # instead of an @ symbols in .type directives
69 * We define a couple of macros so that assembly code will not be dependent
70 * on one or the other.
71 */
72#define _ASM_TYPE_FUNCTION #function
73#define _ASM_TYPE_OBJECT #object
74#define GLOBAL(X) .globl x
75#define _ENTRY(x) \
76 .text; _ALIGN_TEXT; .globl x; .type x,_ASM_TYPE_FUNCTION; x: _FNSTART
77#define _END(x) .size x, . - x; _FNEND
78
79/*
80 * EENTRY()/EEND() mark "extra" entry/exit points from a function.
81 * The unwind info cannot handle the concept of a nested function, or a function
82 * with multiple .fnstart directives, but some of our assembler code is written
83 * with multiple labels to allow entry at several points. The EENTRY() macro
84 * defines such an extra entry point without a new .fnstart, so that it's
85 * basically just a label that you can jump to. The EEND() macro does nothing
86 * at all, except document the exit point associated with the same-named entry.
87 */
88#define _EENTRY(x) .globl x; .type x,_ASM_TYPE_FUNCTION; x:
89#define _EEND(x) /* nothing */
90
91#ifdef GPROF
92# define _PROF_PROLOGUE \
93 mov ip, lr; bl __mcount
94#else
95# define _PROF_PROLOGUE
96#endif
97
98#define ENTRY(y) _ENTRY(_C_LABEL(y)); _PROF_PROLOGUE
99#define EENTRY(y) _EENTRY(_C_LABEL(y)); _PROF_PROLOGUE
100#define ENTRY_NP(y) _ENTRY(_C_LABEL(y))
101#define EENTRY_NP(y) _EENTRY(_C_LABEL(y))
102#define END(y) _END(_C_LABEL(y))
103#define EEND(y)
104#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
105#define ASEENTRY(y) _EENTRY(_ASM_LABEL(y)); _PROF_PROLOGUE
106#define ASENTRY_NP(y) _ENTRY(_ASM_LABEL(y))
107#define ASEENTRY_NP(y) _EENTRY(_ASM_LABEL(y))
108#define ASEND(y) _END(_ASM_LABEL(y))
109#define ASEEND(y)
110
111#define ASMSTR .asciz
112
113#if defined(PIC)
114#define PLT_SYM(x) PIC_SYM(x, PLT)
115#define GOT_SYM(x) PIC_SYM(x, GOT)
116#define GOT_GET(x,got,sym) \
117 ldr x, sym; \
118 ldr x, [x, got]
119#define GOT_INIT(got,gotsym,pclabel) \
120 ldr got, gotsym; \
121 add got, got, pc; \
122 pclabel:
123#define GOT_INITSYM(gotsym,pclabel) \
124 gotsym: .word _C_LABEL(_GLOBAL_OFFSET_TABLE_) + (. - (pclabel+4))
125
126#ifdef __STDC__
127#define PIC_SYM(x,y) x ## ( ## y ## )
128#else
129#define PIC_SYM(x,y) x/**/(/**/y/**/)
130#endif
131
132#else
133#define PLT_SYM(x) x
134#define GOT_SYM(x) x
135#define GOT_GET(x,got,sym) \
136 ldr x, sym;
137#define GOT_INIT(got,gotsym,pclabel)
138#define GOT_INITSYM(gotsym,pclabel)
139#define PIC_SYM(x,y) x
140#endif /* PIC */
141
142#undef __FBSDID
143#if !defined(lint) && !defined(STRIP_FBSDID)
144#define __FBSDID(s) .ident s
145#else
146#define __FBSDID(s) /* nothing */
147#endif
148
149
150#define WEAK_ALIAS(alias,sym) \
151 .weak alias; \
152 alias = sym
153
154#ifdef __STDC__
155#define WARN_REFERENCES(sym,msg) \
156 .stabs msg ## ,30,0,0,0 ; \
157 .stabs __STRING(_C_LABEL(sym)) ## ,1,0,0,0
158#else
159#define WARN_REFERENCES(sym,msg) \
160 .stabs msg,30,0,0,0 ; \
161 .stabs __STRING(sym),1,0,0,0
162#endif /* __STDC__ */
163
164/* Exactly one of the __ARM_ARCH_*__ macros will be defined by the compiler. */
165/* The _ARM_ARCH_* macros are deprecated and will be removed soon. */
166/* This should be moved into another header so it can be used in
167 * both asm and C code. machine/asm.h cannot be included in C code. */
168#if defined (__ARM_ARCH_7__) || defined (__ARM_ARCH_7A__)
169#define _ARM_ARCH_7
170#define _HAVE_ARMv7_INSTRUCTIONS 1
171#endif
172
173#if defined (_HAVE_ARMv7_INSTRUCTIONS) || defined (__ARM_ARCH_6__) || \
174 defined (__ARM_ARCH_6J__) || defined (__ARM_ARCH_6K__) || \
175 defined (__ARM_ARCH_6Z__) || defined (__ARM_ARCH_6ZK__)
176#define _ARM_ARCH_6
177#define _HAVE_ARMv6_INSTRUCTIONS 1
178#endif
179
180#if defined (_HAVE_ARMv6_INSTRUCTIONS) || defined (__ARM_ARCH_5TE__) || \
181 defined (__ARM_ARCH_5TEJ__) || defined (__ARM_ARCH_5E__)
182#define _ARM_ARCH_5E
183#define _HAVE_ARMv5E_INSTRUCTIONS 1
184#endif
185
186#if defined (_HAVE_ARMv5E_INSTRUCTIONS) || defined (__ARM_ARCH_5__) || \
187 defined (__ARM_ARCH_5T__)
188#define _ARM_ARCH_5
189#define _HAVE_ARMv5_INSTRUCTIONS 1
190#endif
191
192#if defined (_HAVE_ARMv5_INSTRUCTIONS) || defined (__ARM_ARCH_4T__)
193#define _ARM_ARCH_4T
194#define _HAVE_ARMv4T_INSTRUCTIONS 1
195#endif
196
197/* FreeBSD requires ARMv4, so this is always set. */
198#define _HAVE_ARMv4_INSTRUCTIONS 1
199
200#if defined (_HAVE_ARMv4T_INSTRUCTIONS)
201# define RET bx lr
202# define RETeq bxeq lr
203# define RETne bxne lr
204# define RETc(c) bx##c lr
205#else
206# define RET mov pc, lr
207# define RETeq moveq pc, lr
208# define RETne movne pc, lr
209# define RETc(c) mov##c pc, lr
210#endif
211
212#endif /* !_MACHINE_ASM_H_ */
|