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Source at commit 1276 created 12 years 11 months ago. By azimutz, Ids maintenance. | |
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1 | /*␊ |
2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.␊ |
3 | *␊ |
4 | * @APPLE_LICENSE_HEADER_START@␊ |
5 | * ␊ |
6 | * This file contains Original Code and/or Modifications of Original Code␊ |
7 | * as defined in and that are subject to the Apple Public Source License␊ |
8 | * Version 2.0 (the 'License'). You may not use this file except in␊ |
9 | * compliance with the License. Please obtain a copy of the License at␊ |
10 | * http://www.opensource.apple.com/apsl/ and read it before using this␊ |
11 | * file.␊ |
12 | * ␊ |
13 | * The Original Code and all software distributed under the License are␊ |
14 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER␊ |
15 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,␊ |
16 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,␊ |
17 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.␊ |
18 | * Please see the License for the specific language governing rights and␊ |
19 | * limitations under the License.␊ |
20 | * ␊ |
21 | * @APPLE_LICENSE_HEADER_END@␊ |
22 | */␊ |
23 | /* Copyright (c) 1991 NeXT Computer, Inc. All rights reserved.␊ |
24 | *␊ |
25 | *␉File:␉architecture/i386/asm_help.h␊ |
26 | *␉Author:␉Mike DeMoney, NeXT Computer, Inc.␊ |
27 | *␉Modified for i386 by: Bruce Martin, NeXT Computer, Inc.␊ |
28 | *␊ |
29 | *␉This header file defines macros useful when writing assembly code␊ |
30 | *␉for the Intel i386 family processors.␊ |
31 | *␊ |
32 | * HISTORY␊ |
33 | * 10-Mar-92 Bruce Martin (bmartin@next.com)␊ |
34 | *␉Adapted to i386␊ |
35 | * 23-Jan-91 Mike DeMoney (mike@next.com)␊ |
36 | *␉Created.␊ |
37 | */␊ |
38 | ␊ |
39 | #ifndef␉_ARCH_I386_ASM_HELP_H_␊ |
40 | #define␉_ARCH_I386_ASM_HELP_H_␊ |
41 | ␊ |
42 | #include␉<architecture/i386/reg_help.h>␊ |
43 | ␊ |
44 | ␊ |
45 | #ifdef␉__ASSEMBLER__␊ |
46 | ␊ |
47 | #define ALIGN␉␉␉␉␉␉\␊ |
48 | ␉.align␉2, 0x90␊ |
49 | ␊ |
50 | #define␉ROUND_TO_STACK(len)␉␉␉␉\␊ |
51 | ␉(((len) + STACK_INCR - 1) / STACK_INCR * STACK_INCR)␊ |
52 | ␊ |
53 | #ifdef notdef␊ |
54 | #if defined(__i386__)␊ |
55 | #define CALL_MCOUNT␉␉␉␉␉␉\␊ |
56 | ␉pushl␉%ebp␉␉␉␉␉␉;\␊ |
57 | ␉movl␉%esp, %ebp␉␉␉␉␉;\␊ |
58 | ␉.data␉␉␉␉␉␉␉;\␊ |
59 | ␉1: .long 0␉␉␉␉␉␉;\␊ |
60 | ␉.text␉␉␉␉␉␉␉;\␊ |
61 | ␉lea 9b,%edx␉␉␉␉␉␉;\␊ |
62 | ␉call mcount␉␉␉␉␉␉;\␊ |
63 | ␉popl␉%ebp␉␉␉␉␉␉;␊ |
64 | #elif defined(__x86_64__)␊ |
65 | #define CALL_MCOUNT␉␉␉␉␉␉\␊ |
66 | ␉pushq␉%rbp␉␉␉␉␉␉;\␊ |
67 | ␉movq␉%rsp, %rbp␉␉␉␉␉;\␊ |
68 | ␉.data␉␉␉␉␉␉␉;\␊ |
69 | ␉1: .quad 0␉␉␉␉␉␉;\␊ |
70 | ␉.text␉␉␉␉␉␉␉;\␊ |
71 | ␉lea 9b,%r13␉␉␉␉␉␉;\␊ |
72 | ␉call mcount␉␉␉␉␉␉;\␊ |
73 | ␉popq␉%rbp␉␉␉␉␉;␊ |
74 | #endif␊ |
75 | #else␊ |
76 | #define CALL_MCOUNT␊ |
77 | #endif␊ |
78 | ␊ |
79 | /*␊ |
80 | * Prologue for functions that may call other functions. Saves␊ |
81 | * registers and sets up a C frame.␊ |
82 | */␊ |
83 | #if defined(__i386__)␊ |
84 | #define NESTED_FUNCTION_PROLOGUE(localvarsize)␉␉␉\␊ |
85 | ␉.set␉__framesize,ROUND_TO_STACK(localvarsize)␉;\␊ |
86 | ␉.set␉__nested_function, 1␉␉␉␉;\␊ |
87 | ␉CALL_MCOUNT␉␉␉␉␉␉\␊ |
88 | ␉.if __framesize␉␉␉␉␉␉;\␊ |
89 | ␉ pushl␉%ebp␉␉␉␉␉␉;\␊ |
90 | ␉ movl␉%esp, %ebp␉␉␉␉␉;\␊ |
91 | ␉ subl␉$__framesize, %esp␉␉␉␉;\␊ |
92 | ␉.endif␉␉␉␉␉␉␉;\␊ |
93 | ␉pushl␉%edi␉␉␉␉␉␉;\␊ |
94 | ␉pushl␉%esi␉␉␉␉␉␉;\␊ |
95 | ␉pushl␉%ebx␊ |
96 | #elif defined(__x86_64__)␊ |
97 | #define NESTED_FUNCTION_PROLOGUE(localvarsize)␉␉␉\␊ |
98 | ␉.set␉__framesize,ROUND_TO_STACK(localvarsize)␉;\␊ |
99 | ␉.set␉__nested_function, 1␉␉␉␉;\␊ |
100 | ␉CALL_MCOUNT␉␉␉␉␉␉\␊ |
101 | ␉.if __framesize␉␉␉␉␉␉;\␊ |
102 | ␉ pushq␉%rbp␉␉␉␉␉␉;\␊ |
103 | ␉ movq␉%rsp, %rbp␉␉␉␉␉;\␊ |
104 | ␉ subq␉$__framesize, %rsp␉␉␉␉;\␊ |
105 | ␉.endif␉␉␉␉␉␉␉;␊ |
106 | #endif␊ |
107 | ␊ |
108 | /*␊ |
109 | * Prologue for functions that do not call other functions. Does not␊ |
110 | * save registers (this is the functions responsibility). Does set␊ |
111 | * up a C frame.␊ |
112 | */␊ |
113 | #if defined(__i386__)␊ |
114 | #define LEAF_FUNCTION_PROLOGUE(localvarsize)␉␉␉\␊ |
115 | ␉.set␉__framesize,ROUND_TO_STACK(localvarsize)␉;\␊ |
116 | ␉.set␉__nested_function, 0␉␉␉␉;\␊ |
117 | ␉CALL_MCOUNT␉␉␉␉␉␉\␊ |
118 | ␉.if __framesize␉␉␉␉␉␉;\␊ |
119 | ␉ pushl␉%ebp␉␉␉␉␉␉;\␊ |
120 | ␉ movl␉%esp, %ebp␉␉␉␉␉;\␊ |
121 | ␉ subl␉$__framesize, %esp␉␉␉␉;\␊ |
122 | ␉.endif␊ |
123 | #elif defined(__x86_64__)␊ |
124 | #define LEAF_FUNCTION_PROLOGUE(localvarsize)␉␉␉\␊ |
125 | ␉.set␉__framesize,ROUND_TO_STACK(localvarsize)␉;\␊ |
126 | ␉.set␉__nested_function, 0␉␉␉␉;\␊ |
127 | ␉CALL_MCOUNT␉␉␉␉␉␉\␊ |
128 | ␉.if __framesize␉␉␉␉␉␉;\␊ |
129 | ␉ pushq␉%rbp␉␉␉␉␉␉;\␊ |
130 | ␉ movq␉%rsp, %rbp␉␉␉␉␉;\␊ |
131 | ␉ subq␉$__framesize, %rsp␉␉␉␉;\␊ |
132 | ␉.endif␊ |
133 | #endif␊ |
134 | ␊ |
135 | /*␊ |
136 | * Epilogue for any function.␊ |
137 | *␊ |
138 | * We assume that all Leaf functions will be responsible for saving any␊ |
139 | * local registers they clobber.␊ |
140 | */␊ |
141 | #if defined(__i386__)␊ |
142 | #define FUNCTION_EPILOGUE␉␉␉␉␉\␊ |
143 | ␉.if __nested_function␉␉␉␉␉;\␊ |
144 | ␉ popl␉%ebx␉␉␉␉␉␉;\␊ |
145 | ␉ popl␉%esi␉␉␉␉␉␉;\␊ |
146 | ␉ popl␉%edi␉␉␉␉␉␉;\␊ |
147 | ␉.endif␉␉␉␉␉␉␉;\␊ |
148 | ␉.if __framesize␉␉␉␉␉␉;\␊ |
149 | ␉ movl␉%ebp, %esp␉␉␉␉␉;\␊ |
150 | ␉ popl␉%ebp␉␉␉␉␉␉;\␊ |
151 | ␉.endif␉␉␉␉␉␉␉;\␊ |
152 | ␉ret␊ |
153 | #elif defined(__x86_64__)␊ |
154 | #define FUNCTION_EPILOGUE␉␉␉␉␉\␊ |
155 | ␉.if __framesize␉␉␉␉␉␉;\␊ |
156 | ␉ movq␉%rbp, %rsp␉␉␉␉␉;\␊ |
157 | ␉ popq␉%rbp␉␉␉␉␉␉;\␊ |
158 | ␉.endif␉␉␉␉␉␉␉;\␊ |
159 | ␉ret␊ |
160 | #endif␊ |
161 | ␊ |
162 | /*␊ |
163 | * Macros for declaring procedures␊ |
164 | *␊ |
165 | * Use of these macros allows ctags to have a predictable way␊ |
166 | * to find various types of declarations. They also simplify␊ |
167 | * inserting appropriate symbol table information.␊ |
168 | *␊ |
169 | * NOTE: these simple stubs will be replaced with more␊ |
170 | * complicated versions once we know what the linker and gdb␊ |
171 | * will require as far as register use masks and frame declarations.␊ |
172 | * These macros may also be ifdef'ed in the future to contain profiling␊ |
173 | * code.␊ |
174 | *␊ |
175 | */␊ |
176 | ␊ |
177 | /*␊ |
178 | * TEXT -- declare start of text segment␊ |
179 | */␊ |
180 | #define␉TEXT␉␉␉␉␉␉\␊ |
181 | ␉.text␊ |
182 | ␊ |
183 | /*␊ |
184 | * DATA -- declare start of data segment␊ |
185 | */␊ |
186 | #define DATA␉␉␉␉␉␉\␊ |
187 | ␉.data␊ |
188 | ␊ |
189 | /*␊ |
190 | * LEAF -- declare global leaf procedure␊ |
191 | * NOTE: Control SHOULD NOT FLOW into a LEAF! A LEAF should only␊ |
192 | * be jumped to. (A leaf may do an align.) Use a LABEL() if you␊ |
193 | * need control to flow into the label.␊ |
194 | */␊ |
195 | #define␉LEAF(name, localvarsize)␉␉␉\␊ |
196 | ␉.globl␉name␉␉␉␉␉;\␊ |
197 | ␉ALIGN␉␉␉␉␉␉;\␊ |
198 | name:␉␉␉␉␉␉␉;\␊ |
199 | ␉LEAF_FUNCTION_PROLOGUE(localvarsize)␊ |
200 | ␊ |
201 | /*␊ |
202 | * X_LEAF -- declare alternate global label for leaf␊ |
203 | */␊ |
204 | #define␉X_LEAF(name, value)␉␉␉␉\␊ |
205 | ␉.globl␉name␉␉␉␉␉;\␊ |
206 | ␉.set␉name,value␊ |
207 | ␊ |
208 | /*␊ |
209 | * P_LEAF -- declare private leaf procedure␊ |
210 | */␊ |
211 | #define␉P_LEAF(name, localvarsize)␉␉␉\␊ |
212 | ␉ALIGN␉␉␉␉␉␉;\␊ |
213 | name:␉␉␉␉␉␉␉;\␊ |
214 | ␉LEAF_FUNCTION_PROLOGUE(localvarsize)␊ |
215 | ␊ |
216 | /*␊ |
217 | * LABEL -- declare a global code label␊ |
218 | * MUST be used (rather than LEAF, NESTED, etc) if control␊ |
219 | * "flows into" the label.␊ |
220 | */␊ |
221 | #define␉LABEL(name)␉␉␉␉␉\␊ |
222 | ␉.globl␉name␉␉␉␉␉;\␊ |
223 | name:␊ |
224 | ␊ |
225 | /*␊ |
226 | * NESTED -- declare procedure that invokes other procedures␊ |
227 | */␊ |
228 | #define␉NESTED(name, localvarsize)␉␉␉\␊ |
229 | ␉.globl␉name␉␉␉␉␉;\␊ |
230 | ␉ALIGN␉␉␉␉␉␉;\␊ |
231 | name:␉␉␉␉␉␉␉;\␊ |
232 | ␉NESTED_FUNCTION_PROLOGUE(localvarsize)␊ |
233 | ␊ |
234 | /*␊ |
235 | * X_NESTED -- declare alternate global label for nested proc␊ |
236 | */␊ |
237 | #define␉X_NESTED(name, value)␉␉␉␉\␊ |
238 | ␉.globl␉name␉␉␉␉␉;\␊ |
239 | ␉.set␉name,value␊ |
240 | ␊ |
241 | /*␊ |
242 | * P_NESTED -- declare private nested procedure␊ |
243 | */␊ |
244 | #define␉P_NESTED(name, localvarsize)␉␉␉\␊ |
245 | ␉ALIGN␉␉␉␉␉␉;\␊ |
246 | name:␉␉␉␉␉␉␉;\␊ |
247 | ␉NESTED_FUNCTION_PROLOGUE(localvarsize)␊ |
248 | ␊ |
249 | /*␊ |
250 | * END -- mark end of procedure␊ |
251 | */␊ |
252 | #define␉END(name)␉␉␉␉␉\␊ |
253 | ␉FUNCTION_EPILOGUE␊ |
254 | ␊ |
255 | ␊ |
256 | /*␊ |
257 | * Storage definition macros␊ |
258 | * The main purpose of these is to allow an easy handle for ctags␊ |
259 | */␊ |
260 | ␊ |
261 | /*␊ |
262 | * IMPORT -- import symbol␊ |
263 | */␊ |
264 | #define␉IMPORT(name)␉␉␉␉␉\␊ |
265 | ␉.reference␉name␊ |
266 | ␊ |
267 | /*␊ |
268 | * ABS -- declare global absolute symbol␊ |
269 | */␊ |
270 | #define␉ABS(name, value)␉␉␉␉\␊ |
271 | ␉.globl␉name␉␉␉␉␉;\␊ |
272 | ␉.set␉name,value␊ |
273 | ␊ |
274 | /*␊ |
275 | * P_ABS -- declare private absolute symbol␊ |
276 | */␊ |
277 | #define␉P_ABS(name, value)␉␉␉␉\␊ |
278 | ␉.set␉name,value␊ |
279 | ␊ |
280 | /*␊ |
281 | * EXPORT -- declare global label for data␊ |
282 | */␊ |
283 | #define␉EXPORT(name)␉␉␉␉␉\␊ |
284 | ␉.globl␉name␉␉␉␉␉;\␊ |
285 | name:␊ |
286 | ␊ |
287 | /*␊ |
288 | * BSS -- declare global zero'ed storage␊ |
289 | */␊ |
290 | #define␉BSS(name,size)␉␉␉␉␉\␊ |
291 | ␉.comm␉name,size␊ |
292 | ␊ |
293 | ␊ |
294 | /*␊ |
295 | * P_BSS -- declare private zero'ed storage␊ |
296 | */␊ |
297 | #define␉P_BSS(name,size)␉␉␉␉\␊ |
298 | ␉.lcomm␉name,size␊ |
299 | ␊ |
300 | /*␊ |
301 | * dynamic/PIC macros for routines which reference external symbols␊ |
302 | */␊ |
303 | ␊ |
304 | #if defined(__DYNAMIC__)␊ |
305 | #if defined(__i386__)␊ |
306 | #define PICIFY(var)␉␉␉␉␉\␊ |
307 | ␉call␉1f␉␉␉␉␉; \␊ |
308 | 1:␉␉␉␉␉␉␉; \␊ |
309 | ␉popl␉%edx␉␉␉␉␉; \␊ |
310 | ␉movl␉L ## var ## __non_lazy_ptr-1b(%edx),%edx␊ |
311 | #elif defined(__x86_64__)␊ |
312 | #define PICIFY(var)␉␉␉␉␉\␊ |
313 | ␉movq␉var@GOTPCREL(%rip),%r11␊ |
314 | #endif␊ |
315 | ␊ |
316 | #if defined(__i386__)␊ |
317 | #define CALL_EXTERN_AGAIN(func)␉\␊ |
318 | ␉PICIFY(func)␉␉; \␊ |
319 | ␉call␉*%edx␊ |
320 | #elif defined(__x86_64__)␊ |
321 | #define CALL_EXTERN_AGAIN(func)␉\␊ |
322 | ␉call␉func␊ |
323 | #endif␊ |
324 | ␊ |
325 | #if defined(__i386__)␊ |
326 | #define NON_LAZY_STUB(var)␉\␊ |
327 | .section __IMPORT,__pointers,non_lazy_symbol_pointers␉; \␊ |
328 | L ## var ## __non_lazy_ptr:␉; \␊ |
329 | .indirect_symbol var␉␉; \␊ |
330 | .long 0␉␉␉␉; \␊ |
331 | .text␊ |
332 | #elif defined(__x86_64__)␊ |
333 | #define NON_LAZY_STUB(var)␉␊ |
334 | #endif␊ |
335 | ␊ |
336 | #define CALL_EXTERN(func)␉\␊ |
337 | ␉CALL_EXTERN_AGAIN(func)␉; \␊ |
338 | ␉NON_LAZY_STUB(func)␊ |
339 | ␊ |
340 | #if defined(__i386__)␊ |
341 | #define BRANCH_EXTERN(func)␉\␊ |
342 | ␉PICIFY(func)␉␉; \␊ |
343 | ␉jmp␉*%edx␉␉; \␊ |
344 | ␉NON_LAZY_STUB(func)␊ |
345 | #elif defined(__x86_64__)␊ |
346 | #define BRANCH_EXTERN(func)␉\␊ |
347 | ␉jmp␉func␊ |
348 | #endif␊ |
349 | ␊ |
350 | #if defined(__i386__)␊ |
351 | #define PUSH_EXTERN(var)␉\␊ |
352 | ␉PICIFY(var)␉␉; \␊ |
353 | ␉movl␉(%edx),%edx␉; \␊ |
354 | ␉pushl␉%edx␉␉; \␊ |
355 | ␉NON_LAZY_STUB(var)␊ |
356 | #endif␊ |
357 | ␊ |
358 | #if defined(__i386__)␊ |
359 | #define REG_TO_EXTERN(reg, var)␉\␊ |
360 | ␉PICIFY(var)␉␉; \␊ |
361 | ␉movl␉reg, (%edx)␉; \␊ |
362 | ␉NON_LAZY_STUB(var)␊ |
363 | #elif defined(__x86_64__)␊ |
364 | #define REG_TO_EXTERN(reg, var)␉\␊ |
365 | ␉PICIFY(var)␉␉; \␊ |
366 | ␉mov␉␉reg, (%r11)␊ |
367 | #endif␊ |
368 | ␊ |
369 | #if defined(__i386__)␊ |
370 | #define EXTERN_TO_REG(var, reg)␉␉␉␉\␊ |
371 | ␉call␉1f␉␉␉␉␉; \␊ |
372 | 1:␉␉␉␉␉␉␉; \␊ |
373 | ␉popl␉%edx␉␉␉␉␉; \␊ |
374 | ␉movl␉L ## var ##__non_lazy_ptr-1b(%edx),reg␉; \␊ |
375 | ␉NON_LAZY_STUB(var)␊ |
376 | #elif defined(__x86_64__)␊ |
377 | #define EXTERN_TO_REG(var, reg)␉␉␉␉\␊ |
378 | ␉PICIFY(var)␉␉; \␊ |
379 | ␉mov (%r11), reg␊ |
380 | #endif␊ |
381 | ␊ |
382 | #else␊ |
383 | #define BRANCH_EXTERN(func)␉jmp␉func␊ |
384 | #define PUSH_EXTERN(var)␉push␉var␊ |
385 | #define CALL_EXTERN(func)␉call␉func␊ |
386 | #define CALL_EXTERN_AGAIN(func)␉call␉func␊ |
387 | #if defined(__i386__)␊ |
388 | #define REG_TO_EXTERN(reg, var)␉mov␉reg, var␊ |
389 | #define EXTERN_TO_REG(var, reg)␉mov␉$ ## var, reg␊ |
390 | #elif defined(__x86_64__)␊ |
391 | #define REG_TO_EXTERN(reg, var)␉mov␉reg, var ## (%rip)␊ |
392 | #define EXTERN_TO_REG(var, reg)␉mov␉var ## (%rip), reg␊ |
393 | #endif␊ |
394 | #endif␊ |
395 | ␊ |
396 | #endif␉/* __ASSEMBLER__ */␊ |
397 | ␊ |
398 | #endif␉/* _ARCH_I386_ASM_HELP_H_ */␊ |
399 |