1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
|
/* $OpenBSD: asm.h,v 1.1 2006/10/06 21:02:55 miod Exp $ */
/* $NetBSD: asm.h,v 1.25 2006/01/20 22:02:40 christos Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* @(#)asm.h 5.5 (Berkeley) 5/7/91
*/
#ifndef _SH_ASM_H_
#define _SH_ASM_H_
#ifdef __ELF__
# define _C_LABEL(x) x
#else
#ifdef __STDC__
# define _C_LABEL(x) _ ## x
#else
# define _C_LABEL(x) _/**/x
#endif
#endif
#define _ASM_LABEL(x) x
#ifdef __STDC__
# define __CONCAT(x,y) x ## y
# define __STRING(x) #x
#else
# define __CONCAT(x,y) x/**/y
# define __STRING(x) "x"
#endif
/* let kernels and others override entrypoint alignment */
#ifndef _ALIGN_TEXT
# define _ALIGN_TEXT .align 2
#endif
#ifdef __ELF__
#define _ENTRY(x) \
.text ;\
_ALIGN_TEXT ;\
.globl x ;\
.type x,@function ;\
x:
#else /* !__ELF__ */
#define _ENTRY(x) \
.text ;\
_ALIGN_TEXT ;\
.globl x ;\
x:
#endif /* !__ELF__ */
#ifdef GPROF
#define _PROF_PROLOGUE \
mov.l 1f,r1 ; \
mova 2f,r0 ; \
jmp @r1 ; \
nop ; \
.align 2 ; \
1: .long __mcount ; \
2:
#else /* !GPROF */
#define _PROF_PROLOGUE
#endif /* !GPROF */
#define ENTRY(y) _ENTRY(_C_LABEL(y)) _PROF_PROLOGUE
#define NENTRY(y) _ENTRY(_C_LABEL(y))
#define ASENTRY(y) _ENTRY(_ASM_LABEL(y)) _PROF_PROLOGUE
#define SET_ENTRY_SIZE(y) \
.size _C_LABEL(y), . - _C_LABEL(y)
#define SET_ASENTRY_SIZE(y) \
.size _ASM_LABEL(y), . - _ASM_LABEL(y)
#ifdef __ELF__
#define ALTENTRY(name) \
.globl _C_LABEL(name) ;\
.type _C_LABEL(name),@function ;\
_C_LABEL(name):
#else
#define ALTENTRY(name) \
.globl _C_LABEL(name) ;\
_C_LABEL(name):
#endif
/*
* Hide the gory details of PIC calls vs. normal calls. Use as in the
* following example:
*
* sts.l pr, @-sp
* PIC_PROLOGUE(.L_got, r0) ! saves old r12 on stack
* ...
* mov.l .L_function_1, r0
* 1: CALL r0 ! each call site needs a label
* nop
* ...
* mov.l .L_function_2, r0
* 2: CALL r0
* nop
* ...
* PIC_EPILOGUE ! restores r12 from stack
* lds.l @sp+, pr ! so call in right order
* rts
* nop
*
* .align 2
* .L_got:
* PIC_GOT_DATUM
* .L_function_1: ! if you call the same function twice
* CALL_DATUM(function, 1b) ! provide call datum for each call
* .L_function_2:
* CALL_DATUM(function, 2b)
*/
#ifdef PIC
#define PIC_PLT(x) x@PLT
#define PIC_GOT(x) x@GOT
#define PIC_GOTOFF(x) x@GOTOFF
#define PIC_PROLOGUE(got) \
mov.l r12, @-sp; \
PIC_PROLOGUE_NOSAVE(got)
/*
* Functions that do non local jumps don't need to preserve r12,
* so we can shave off two instructions to save/restore it.
*/
#define PIC_PROLOGUE_NOSAVE(got) \
mov.l got, r12; \
mova got, r0; \
add r0, r12
#define PIC_EPILOGUE \
mov.l @sp+, r12
#define PIC_EPILOGUE_SLOT \
PIC_EPILOGUE
#define PIC_GOT_DATUM \
.long _GLOBAL_OFFSET_TABLE_
#define CALL bsrf
#define JUMP braf
#define CALL_DATUM(function, lpcs) \
.long PIC_PLT(function) - ((lpcs) + 4 - (.))
/*
* This will result in text relocations in the shared library,
* unless the function is local or has hidden or protected visibility.
* Does not require PIC prologue.
*/
#define CALL_DATUM_LOCAL(function, lpcs) \
.long function - ((lpcs) + 4)
#else /* !PIC */
#define PIC_PROLOGUE(label)
#define PIC_PROLOGUE_NOSAVE(label)
#define PIC_EPILOGUE
#define PIC_EPILOGUE_SLOT nop
#define PIC_GOT_DATUM
#define CALL jsr @
#define JUMP jmp @
#define CALL_DATUM(function, lpcs) \
.long function
#define CALL_DATUM_LOCAL(function, lpcs) \
.long function
#endif /* !PIC */
#define ASMSTR .asciz
#ifdef __ELF__
#define WEAK_ALIAS(alias,sym) \
.weak _C_LABEL(alias); \
_C_LABEL(alias) = _C_LABEL(sym)
#endif
#define WARN_REFERENCES(_sym,_msg) \
.section .gnu.warning._sym; .ascii _msg; .previous
#endif /* !_SH_ASM_H_ */
|
