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1 | /* Definitions of target machine for GNU compiler, for Sun SPARC. | |
2 | Copyright (C) 1987-2024 Free Software Foundation, Inc. | |
3 | Contributed by Michael Tiemann (tiemann@cygnus.com). | |
4 | 64-bit SPARC-V9 support by Michael Tiemann, Jim Wilson, and Doug Evans, | |
5 | at Cygnus Support. | |
6 | ||
7 | This file is part of GCC. | |
8 | ||
9 | GCC is free software; you can redistribute it and/or modify | |
10 | it under the terms of the GNU General Public License as published by | |
11 | the Free Software Foundation; either version 3, or (at your option) | |
12 | any later version. | |
13 | ||
14 | GCC is distributed in the hope that it will be useful, | |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
18 | ||
19 | You should have received a copy of the GNU General Public License | |
20 | along with GCC; see the file COPYING3. If not see | |
21 | <http://www.gnu.org/licenses/>. */ | |
22 | ||
23 | #include "config/vxworks-dummy.h" | |
24 | ||
25 | /* Note that some other tm.h files include this one and then override | |
26 | whatever definitions are necessary. */ | |
27 | ||
28 | #define TARGET_CPU_CPP_BUILTINS() sparc_target_macros () | |
29 | ||
30 | /* Specify this in a cover file to provide bi-architecture (32/64) support. */ | |
31 | /* #define SPARC_BI_ARCH */ | |
32 | ||
33 | /* Macro used later in this file to determine default architecture. */ | |
34 | #define DEFAULT_ARCH32_P ((TARGET_DEFAULT & MASK_64BIT) == 0) | |
35 | ||
36 | /* TARGET_ARCH{32,64} are the main macros to decide which of the two | |
37 | architectures to compile for. We allow targets to choose compile time or | |
38 | runtime selection. */ | |
39 | #ifdef IN_LIBGCC2 | |
40 | #if defined(__sparcv9) || defined(__arch64__) | |
41 | #define TARGET_ARCH32 0 | |
42 | #else | |
43 | #define TARGET_ARCH32 1 | |
44 | #endif /* sparc64 */ | |
45 | #else | |
46 | #ifdef SPARC_BI_ARCH | |
47 | #define TARGET_ARCH32 (!TARGET_64BIT) | |
48 | #else | |
49 | #define TARGET_ARCH32 (DEFAULT_ARCH32_P) | |
50 | #endif /* SPARC_BI_ARCH */ | |
51 | #endif /* IN_LIBGCC2 */ | |
52 | #define TARGET_ARCH64 (!TARGET_ARCH32) | |
53 | ||
54 | /* Code model selection in 64-bit environment. | |
55 | ||
56 | The machine mode used for addresses is 32-bit wide: | |
57 | ||
58 | TARGET_CM_32: 32-bit address space. | |
59 | It is the code model used when generating 32-bit code. | |
60 | ||
61 | The machine mode used for addresses is 64-bit wide: | |
62 | ||
63 | TARGET_CM_MEDLOW: 32-bit address space. | |
64 | The executable must be in the low 32 bits of memory. | |
65 | This avoids generating %uhi and %ulo terms. Programs | |
66 | can be statically or dynamically linked. | |
67 | ||
68 | TARGET_CM_MEDMID: 44-bit address space. | |
69 | The executable must be in the low 44 bits of memory, | |
70 | and the %[hml]44 terms are used. The text and data | |
71 | segments have a maximum size of 2GB (31-bit span). | |
72 | The maximum offset from any instruction to the label | |
73 | _GLOBAL_OFFSET_TABLE_ is 2GB (31-bit span). | |
74 | ||
75 | TARGET_CM_MEDANY: 64-bit address space. | |
76 | The text and data segments have a maximum size of 2GB | |
77 | (31-bit span) and may be located anywhere in memory. | |
78 | The maximum offset from any instruction to the label | |
79 | _GLOBAL_OFFSET_TABLE_ is 2GB (31-bit span). | |
80 | ||
81 | TARGET_CM_EMBMEDANY: 64-bit address space. | |
82 | The text and data segments have a maximum size of 2GB | |
83 | (31-bit span) and may be located anywhere in memory. | |
84 | The global register %g4 contains the start address of | |
85 | the data segment. Programs are statically linked and | |
86 | PIC is not supported. | |
87 | ||
88 | Different code models are not supported in 32-bit environment. */ | |
89 | ||
90 | #define TARGET_CM_MEDLOW (sparc_code_model == CM_MEDLOW) | |
91 | #define TARGET_CM_MEDMID (sparc_code_model == CM_MEDMID) | |
92 | #define TARGET_CM_MEDANY (sparc_code_model == CM_MEDANY) | |
93 | #define TARGET_CM_EMBMEDANY (sparc_code_model == CM_EMBMEDANY) | |
94 | ||
95 | /* Default code model to be overridden in 64-bit environment. */ | |
96 | #define SPARC_DEFAULT_CMODEL CM_32 | |
97 | ||
98 | /* Do not use the .note.GNU-stack convention by default. */ | |
99 | #define NEED_INDICATE_EXEC_STACK 0 | |
100 | ||
101 | /* This is call-clobbered in the normal ABI, but is reserved in the | |
102 | home grown (aka upward compatible) embedded ABI. */ | |
103 | #define EMBMEDANY_BASE_REG "%g4" | |
104 | \f | |
105 | /* Values of TARGET_CPU_DEFAULT, set via -D in the Makefile, | |
106 | and specified by the user via --with-cpu=foo. | |
107 | This specifies the cpu implementation, not the architecture size. */ | |
108 | /* Note that TARGET_CPU_v9 is assumed to start the list of 64-bit | |
109 | capable cpu's. */ | |
110 | #define TARGET_CPU_sparc 0 | |
111 | #define TARGET_CPU_v7 0 /* alias */ | |
112 | #define TARGET_CPU_cypress 0 /* alias */ | |
113 | #define TARGET_CPU_v8 1 /* generic v8 implementation */ | |
114 | #define TARGET_CPU_supersparc 2 | |
115 | #define TARGET_CPU_hypersparc 3 | |
116 | #define TARGET_CPU_leon 4 | |
117 | #define TARGET_CPU_leon3 5 | |
118 | #define TARGET_CPU_leon3v7 6 | |
119 | #define TARGET_CPU_leon5 7 | |
120 | #define TARGET_CPU_sparclite 8 | |
121 | #define TARGET_CPU_f930 8 /* alias */ | |
122 | #define TARGET_CPU_f934 8 /* alias */ | |
123 | #define TARGET_CPU_sparclite86x 9 | |
124 | #define TARGET_CPU_sparclet 10 | |
125 | #define TARGET_CPU_tsc701 10 /* alias */ | |
126 | #define TARGET_CPU_v9 11 /* generic v9 implementation */ | |
127 | #define TARGET_CPU_sparcv9 11 /* alias */ | |
128 | #define TARGET_CPU_sparc64 11 /* alias */ | |
129 | #define TARGET_CPU_ultrasparc 12 | |
130 | #define TARGET_CPU_ultrasparc3 13 | |
131 | #define TARGET_CPU_niagara 14 | |
132 | #define TARGET_CPU_niagara2 15 | |
133 | #define TARGET_CPU_niagara3 16 | |
134 | #define TARGET_CPU_niagara4 17 | |
135 | #define TARGET_CPU_niagara7 19 | |
136 | #define TARGET_CPU_m8 20 | |
137 | ||
138 | #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 \ | |
139 | || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc \ | |
140 | || TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3 \ | |
141 | || TARGET_CPU_DEFAULT == TARGET_CPU_niagara \ | |
142 | || TARGET_CPU_DEFAULT == TARGET_CPU_niagara2 \ | |
143 | || TARGET_CPU_DEFAULT == TARGET_CPU_niagara3 \ | |
144 | || TARGET_CPU_DEFAULT == TARGET_CPU_niagara4 \ | |
145 | || TARGET_CPU_DEFAULT == TARGET_CPU_niagara7 \ | |
146 | || TARGET_CPU_DEFAULT == TARGET_CPU_m8 | |
147 | ||
148 | #define CPP_CPU32_DEFAULT_SPEC "" | |
149 | #define ASM_CPU32_DEFAULT_SPEC "" | |
150 | ||
151 | #if TARGET_CPU_DEFAULT == TARGET_CPU_v9 | |
152 | /* ??? What does Sun's CC pass? */ | |
153 | #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" | |
154 | /* ??? It's not clear how other assemblers will handle this, so by default | |
155 | use GAS. Sun's Solaris assembler recognizes -xarch=v8plus, but this case | |
156 | is handled in sol2.h. */ | |
157 | #define ASM_CPU64_DEFAULT_SPEC "-Av9" | |
158 | #endif | |
159 | #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc | |
160 | #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" | |
161 | #define ASM_CPU64_DEFAULT_SPEC "-Av9a" | |
162 | #endif | |
163 | #if TARGET_CPU_DEFAULT == TARGET_CPU_ultrasparc3 | |
164 | #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" | |
165 | #define ASM_CPU64_DEFAULT_SPEC "-Av9b" | |
166 | #endif | |
167 | #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara | |
168 | #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" | |
169 | #define ASM_CPU64_DEFAULT_SPEC "-Av9b" | |
170 | #endif | |
171 | #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara2 | |
172 | #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" | |
173 | #define ASM_CPU64_DEFAULT_SPEC "-Av9b" | |
174 | #endif | |
175 | #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara3 | |
176 | #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" | |
177 | #define ASM_CPU64_DEFAULT_SPEC "-Av9" AS_NIAGARA3_FLAG | |
178 | #endif | |
179 | #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara4 | |
180 | #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" | |
181 | #define ASM_CPU64_DEFAULT_SPEC AS_NIAGARA4_FLAG | |
182 | #endif | |
183 | #if TARGET_CPU_DEFAULT == TARGET_CPU_niagara7 | |
184 | #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" | |
185 | #define ASM_CPU64_DEFAULT_SPEC AS_NIAGARA7_FLAG | |
186 | #endif | |
187 | #if TARGET_CPU_DEFAULT == TARGET_CPU_m8 | |
188 | #define CPP_CPU64_DEFAULT_SPEC "-D__sparc_v9__" | |
189 | #define ASM_CPU64_DEFAULT_SPEC AS_M8_FLAG | |
190 | #endif | |
191 | ||
192 | #else | |
193 | ||
194 | #define CPP_CPU64_DEFAULT_SPEC "" | |
195 | #define ASM_CPU64_DEFAULT_SPEC "" | |
196 | ||
197 | #if TARGET_CPU_DEFAULT == TARGET_CPU_sparc \ | |
198 | || TARGET_CPU_DEFAULT == TARGET_CPU_v8 | |
199 | #define CPP_CPU32_DEFAULT_SPEC "" | |
200 | #define ASM_CPU32_DEFAULT_SPEC "" | |
201 | #endif | |
202 | ||
203 | #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclet | |
204 | #define CPP_CPU32_DEFAULT_SPEC "-D__sparclet__" | |
205 | #define ASM_CPU32_DEFAULT_SPEC "-Asparclet" | |
206 | #endif | |
207 | ||
208 | #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclite | |
209 | #define CPP_CPU32_DEFAULT_SPEC "-D__sparclite__" | |
210 | #define ASM_CPU32_DEFAULT_SPEC "-Asparclite" | |
211 | #endif | |
212 | ||
213 | #if TARGET_CPU_DEFAULT == TARGET_CPU_sparclite86x | |
214 | #define CPP_CPU32_DEFAULT_SPEC "-D__sparclite86x__" | |
215 | #define ASM_CPU32_DEFAULT_SPEC "-Asparclite" | |
216 | #endif | |
217 | ||
218 | #if TARGET_CPU_DEFAULT == TARGET_CPU_supersparc | |
219 | #define CPP_CPU32_DEFAULT_SPEC "-D__supersparc__ -D__sparc_v8__" | |
220 | #define ASM_CPU32_DEFAULT_SPEC "" | |
221 | #endif | |
222 | ||
223 | #if TARGET_CPU_DEFAULT == TARGET_CPU_hypersparc | |
224 | #define CPP_CPU32_DEFAULT_SPEC "-D__hypersparc__ -D__sparc_v8__" | |
225 | #define ASM_CPU32_DEFAULT_SPEC "" | |
226 | #endif | |
227 | ||
228 | #if TARGET_CPU_DEFAULT == TARGET_CPU_leon \ | |
229 | || TARGET_CPU_DEFAULT == TARGET_CPU_leon3 \ | |
230 | || TARGET_CPU_DEFAULT == TARGET_CPU_leon5 | |
231 | #define CPP_CPU32_DEFAULT_SPEC "-D__leon__ -D__sparc_v8__" | |
232 | #define ASM_CPU32_DEFAULT_SPEC AS_LEON_FLAG | |
233 | #endif | |
234 | ||
235 | #if TARGET_CPU_DEFAULT == TARGET_CPU_leon3v7 | |
236 | #define CPP_CPU32_DEFAULT_SPEC "-D__leon__" | |
237 | #define ASM_CPU32_DEFAULT_SPEC AS_LEONV7_FLAG | |
238 | #endif | |
239 | ||
240 | #endif | |
241 | ||
242 | #if !defined(CPP_CPU32_DEFAULT_SPEC) || !defined(CPP_CPU64_DEFAULT_SPEC) | |
243 | #error Unrecognized value in TARGET_CPU_DEFAULT. | |
244 | #endif | |
245 | ||
246 | #ifdef SPARC_BI_ARCH | |
247 | ||
248 | #define CPP_CPU_DEFAULT_SPEC \ | |
249 | (DEFAULT_ARCH32_P ? "\ | |
250 | %{m64:" CPP_CPU64_DEFAULT_SPEC "} \ | |
251 | %{!m64:" CPP_CPU32_DEFAULT_SPEC "} \ | |
252 | " : "\ | |
253 | %{m32:" CPP_CPU32_DEFAULT_SPEC "} \ | |
254 | %{!m32:" CPP_CPU64_DEFAULT_SPEC "} \ | |
255 | ") | |
256 | #define ASM_CPU_DEFAULT_SPEC \ | |
257 | (DEFAULT_ARCH32_P ? "\ | |
258 | %{m64:" ASM_CPU64_DEFAULT_SPEC "} \ | |
259 | %{!m64:" ASM_CPU32_DEFAULT_SPEC "} \ | |
260 | " : "\ | |
261 | %{m32:" ASM_CPU32_DEFAULT_SPEC "} \ | |
262 | %{!m32:" ASM_CPU64_DEFAULT_SPEC "} \ | |
263 | ") | |
264 | ||
265 | #else /* !SPARC_BI_ARCH */ | |
266 | ||
267 | #define CPP_CPU_DEFAULT_SPEC (DEFAULT_ARCH32_P ? CPP_CPU32_DEFAULT_SPEC : CPP_CPU64_DEFAULT_SPEC) | |
268 | #define ASM_CPU_DEFAULT_SPEC (DEFAULT_ARCH32_P ? ASM_CPU32_DEFAULT_SPEC : ASM_CPU64_DEFAULT_SPEC) | |
269 | ||
270 | #endif /* !SPARC_BI_ARCH */ | |
271 | ||
272 | /* Define macros to distinguish architectures. */ | |
273 | ||
274 | /* Common CPP definitions used by CPP_SPEC amongst the various targets | |
275 | for handling -mcpu=xxx switches. */ | |
276 | #define CPP_CPU_SPEC "\ | |
277 | %{mcpu=sparclet:-D__sparclet__} %{mcpu=tsc701:-D__sparclet__} \ | |
278 | %{mcpu=sparclite:-D__sparclite__} \ | |
279 | %{mcpu=f930:-D__sparclite__} %{mcpu=f934:-D__sparclite__} \ | |
280 | %{mcpu=sparclite86x:-D__sparclite86x__} \ | |
281 | %{mcpu=v8:-D__sparc_v8__} \ | |
282 | %{mcpu=supersparc:-D__supersparc__ -D__sparc_v8__} \ | |
283 | %{mcpu=hypersparc:-D__hypersparc__ -D__sparc_v8__} \ | |
284 | %{mcpu=leon:-D__leon__ -D__sparc_v8__} \ | |
285 | %{mcpu=leon3:-D__leon__ -D__sparc_v8__} \ | |
286 | %{mcpu=leon5:-D__leon__ -D__sparc_v8__} \ | |
287 | %{mcpu=leon3v7:-D__leon__} \ | |
288 | %{mcpu=v9:-D__sparc_v9__} \ | |
289 | %{mcpu=ultrasparc:-D__sparc_v9__} \ | |
290 | %{mcpu=ultrasparc3:-D__sparc_v9__} \ | |
291 | %{mcpu=niagara:-D__sparc_v9__} \ | |
292 | %{mcpu=niagara2:-D__sparc_v9__} \ | |
293 | %{mcpu=niagara3:-D__sparc_v9__} \ | |
294 | %{mcpu=niagara4:-D__sparc_v9__} \ | |
295 | %{mcpu=niagara7:-D__sparc_v9__} \ | |
296 | %{mcpu=m8:-D__sparc_v9__} \ | |
297 | %{!mcpu*:%(cpp_cpu_default)} \ | |
298 | " | |
299 | #define CPP_ARCH32_SPEC "" | |
300 | #define CPP_ARCH64_SPEC "-D__arch64__" | |
301 | ||
302 | #define CPP_ARCH_DEFAULT_SPEC \ | |
303 | (DEFAULT_ARCH32_P ? CPP_ARCH32_SPEC : CPP_ARCH64_SPEC) | |
304 | ||
305 | #define CPP_ARCH_SPEC "\ | |
306 | %{m32:%(cpp_arch32)} \ | |
307 | %{m64:%(cpp_arch64)} \ | |
308 | %{!m32:%{!m64:%(cpp_arch_default)}} \ | |
309 | " | |
310 | ||
311 | /* Macros to distinguish the endianness, window model and FP support. */ | |
312 | #define CPP_OTHER_SPEC "\ | |
313 | %{mflat:-D_FLAT} \ | |
314 | %{msoft-float:-D_SOFT_FLOAT} \ | |
315 | " | |
316 | ||
317 | /* Macros to distinguish the particular subtarget. */ | |
318 | #define CPP_SUBTARGET_SPEC "" | |
319 | ||
320 | #define CPP_SPEC \ | |
321 | "%(cpp_cpu) %(cpp_arch) %(cpp_endian) %(cpp_other) %(cpp_subtarget)" | |
322 | ||
323 | /* This used to translate -dalign to -malign, but that is no good | |
324 | because it can't turn off the usual meaning of making debugging dumps. */ | |
325 | ||
326 | #define CC1_SPEC "" | |
327 | ||
328 | /* Override in target specific files. */ | |
329 | #define ASM_CPU_SPEC "\ | |
330 | %{mcpu=sparclet:-Asparclet} %{mcpu=tsc701:-Asparclet} \ | |
331 | %{mcpu=sparclite:-Asparclite} \ | |
332 | %{mcpu=sparclite86x:-Asparclite} \ | |
333 | %{mcpu=f930:-Asparclite} %{mcpu=f934:-Asparclite} \ | |
334 | %{mcpu=v8:-Av8} \ | |
335 | %{mcpu=supersparc:-Av8} \ | |
336 | %{mcpu=hypersparc:-Av8} \ | |
337 | %{mcpu=leon:" AS_LEON_FLAG "} \ | |
338 | %{mcpu=leon3:" AS_LEON_FLAG "} \ | |
339 | %{mcpu=leon5:" AS_LEON_FLAG "} \ | |
340 | %{mcpu=leon3v7:" AS_LEONV7_FLAG "} \ | |
341 | %{mv8plus:-Av8plus} \ | |
342 | %{mcpu=v9:-Av9} \ | |
343 | %{mcpu=ultrasparc:%{!mv8plus:-Av9a}} \ | |
344 | %{mcpu=ultrasparc3:%{!mv8plus:-Av9b}} \ | |
345 | %{mcpu=niagara:%{!mv8plus:-Av9b}} \ | |
346 | %{mcpu=niagara2:%{!mv8plus:-Av9b}} \ | |
347 | %{mcpu=niagara3:%{!mv8plus:-Av9" AS_NIAGARA3_FLAG "}} \ | |
348 | %{mcpu=niagara4:%{!mv8plus:" AS_NIAGARA4_FLAG "}} \ | |
349 | %{mcpu=niagara7:%{!mv8plus:" AS_NIAGARA7_FLAG "}} \ | |
350 | %{mcpu=m8:%{!mv8plus:" AS_M8_FLAG "}} \ | |
351 | %{!mcpu*:%(asm_cpu_default)} \ | |
352 | " | |
353 | ||
354 | /* Word size selection, among other things. | |
355 | This is what GAS uses. Add %(asm_arch) to ASM_SPEC to enable. */ | |
356 | ||
357 | #define ASM_ARCH32_SPEC "-32" | |
358 | #define ASM_ARCH64_SPEC "-64 -no-undeclared-regs" | |
359 | #define ASM_ARCH_DEFAULT_SPEC \ | |
360 | (DEFAULT_ARCH32_P ? ASM_ARCH32_SPEC : ASM_ARCH64_SPEC) | |
361 | ||
362 | #define ASM_ARCH_SPEC "\ | |
363 | %{m32:%(asm_arch32)} \ | |
364 | %{m64:%(asm_arch64)} \ | |
365 | %{!m32:%{!m64:%(asm_arch_default)}} \ | |
366 | " | |
367 | ||
368 | #ifdef HAVE_AS_RELAX_OPTION | |
369 | #define ASM_RELAX_SPEC "%{!mno-relax:-relax}" | |
370 | #else | |
371 | #define ASM_RELAX_SPEC "" | |
372 | #endif | |
373 | ||
374 | /* Special flags to the Sun-4 assembler when using pipe for input. */ | |
375 | ||
376 | #define ASM_SPEC "\ | |
377 | %{!pg:%{!p:%{" FPIE_OR_FPIC_SPEC ":-k}}} %{keep-local-as-symbols:-L} \ | |
378 | %(asm_cpu) %(asm_relax)" | |
379 | ||
380 | /* This macro defines names of additional specifications to put in the specs | |
381 | that can be used in various specifications like CC1_SPEC. Its definition | |
382 | is an initializer with a subgrouping for each command option. | |
383 | ||
384 | Each subgrouping contains a string constant, that defines the | |
385 | specification name, and a string constant that used by the GCC driver | |
386 | program. | |
387 | ||
388 | Do not define this macro if it does not need to do anything. */ | |
389 | ||
390 | #define EXTRA_SPECS \ | |
391 | { "cpp_cpu", CPP_CPU_SPEC }, \ | |
392 | { "cpp_cpu_default", CPP_CPU_DEFAULT_SPEC }, \ | |
393 | { "cpp_arch32", CPP_ARCH32_SPEC }, \ | |
394 | { "cpp_arch64", CPP_ARCH64_SPEC }, \ | |
395 | { "cpp_arch_default", CPP_ARCH_DEFAULT_SPEC },\ | |
396 | { "cpp_arch", CPP_ARCH_SPEC }, \ | |
397 | { "cpp_other", CPP_OTHER_SPEC }, \ | |
398 | { "cpp_subtarget", CPP_SUBTARGET_SPEC }, \ | |
399 | { "asm_cpu", ASM_CPU_SPEC }, \ | |
400 | { "asm_cpu_default", ASM_CPU_DEFAULT_SPEC }, \ | |
401 | { "asm_arch32", ASM_ARCH32_SPEC }, \ | |
402 | { "asm_arch64", ASM_ARCH64_SPEC }, \ | |
403 | { "asm_relax", ASM_RELAX_SPEC }, \ | |
404 | { "asm_arch_default", ASM_ARCH_DEFAULT_SPEC },\ | |
405 | { "asm_arch", ASM_ARCH_SPEC }, \ | |
406 | SUBTARGET_EXTRA_SPECS | |
407 | ||
408 | #define SUBTARGET_EXTRA_SPECS | |
409 | ||
410 | /* Because libgcc can generate references back to libc (via .umul etc.) we have | |
411 | to list libc again after the second libgcc. */ | |
412 | #define LINK_GCC_C_SEQUENCE_SPEC "%G %{!nolibc:%L} %G %{!nolibc:%L}" | |
413 | ||
414 | \f | |
415 | #define PTRDIFF_TYPE (TARGET_ARCH64 ? "long int" : "int") | |
416 | #define SIZE_TYPE (TARGET_ARCH64 ? "long unsigned int" : "unsigned int") | |
417 | ||
418 | /* ??? This should be 32 bits for v9 but what can we do? */ | |
419 | #define WCHAR_TYPE "short unsigned int" | |
420 | #define WCHAR_TYPE_SIZE 16 | |
421 | \f | |
422 | /* Mask of all CPU selection flags. */ | |
423 | #define MASK_ISA \ | |
424 | (MASK_SPARCLITE + MASK_SPARCLET + MASK_LEON + MASK_LEON3 \ | |
425 | + MASK_V8 + MASK_V9 + MASK_DEPRECATED_V8_INSNS) | |
426 | ||
427 | /* Mask of all CPU feature flags. */ | |
428 | #define MASK_FEATURES \ | |
429 | (MASK_FPU + MASK_HARD_QUAD + MASK_VIS + MASK_VIS2 + MASK_VIS3 \ | |
430 | + MASK_VIS4 + MASK_CBCOND + MASK_FMAF + MASK_FSMULD \ | |
431 | + MASK_POPC + MASK_SUBXC) | |
432 | ||
433 | /* TARGET_HARD_MUL: Use 32-bit hardware multiply instructions but not %y. */ | |
434 | #define TARGET_HARD_MUL \ | |
435 | (TARGET_SPARCLITE || TARGET_SPARCLET \ | |
436 | || TARGET_V8 || TARGET_DEPRECATED_V8_INSNS) | |
437 | ||
438 | /* TARGET_HARD_MUL32: Use 32-bit hardware multiply instructions with %y | |
439 | to get high 32 bits. False in 64-bit or V8+ because multiply stores | |
440 | a 64-bit result in a register. */ | |
441 | #define TARGET_HARD_MUL32 \ | |
442 | (TARGET_HARD_MUL && TARGET_ARCH32 && !TARGET_V8PLUS) | |
443 | ||
444 | /* MASK_APP_REGS must always be the default because that's what | |
445 | FIXED_REGISTERS is set to and -ffixed- is processed before | |
446 | TARGET_CONDITIONAL_REGISTER_USAGE is called (where we process | |
447 | -mno-app-regs). */ | |
448 | #define TARGET_DEFAULT (MASK_APP_REGS + MASK_FPU) | |
449 | ||
450 | /* Recast the cpu class to be the cpu attribute. | |
451 | Every file includes us, but not every file includes insn-attr.h. */ | |
452 | #define sparc_cpu_attr ((enum attr_cpu) sparc_cpu) | |
453 | ||
454 | /* Support for a compile-time default CPU, et cetera. The rules are: | |
455 | --with-cpu is ignored if -mcpu is specified. | |
456 | --with-tune is ignored if -mtune is specified. | |
457 | --with-float is ignored if -mhard-float, -msoft-float, -mfpu, or -mno-fpu | |
458 | are specified. */ | |
459 | #define OPTION_DEFAULT_SPECS \ | |
460 | {"cpu", "%{!mcpu=*:-mcpu=%(VALUE)}" }, \ | |
461 | {"tune", "%{!mtune=*:-mtune=%(VALUE)}" }, \ | |
462 | {"float", "%{!msoft-float:%{!mhard-float:%{!mfpu:%{!mno-fpu:-m%(VALUE)-float}}}}" } | |
463 | \f | |
464 | /* target machine storage layout */ | |
465 | ||
466 | /* Define this if most significant bit is lowest numbered | |
467 | in instructions that operate on numbered bit-fields. */ | |
468 | #define BITS_BIG_ENDIAN 1 | |
469 | ||
470 | /* Define this if most significant byte of a word is the lowest numbered. */ | |
471 | #define BYTES_BIG_ENDIAN 1 | |
472 | ||
473 | /* Define this if most significant word of a multiword number is the lowest | |
474 | numbered. */ | |
475 | #define WORDS_BIG_ENDIAN 1 | |
476 | ||
477 | #define MAX_BITS_PER_WORD 64 | |
478 | ||
479 | /* Width of a word, in units (bytes). */ | |
480 | #define UNITS_PER_WORD (TARGET_ARCH64 ? 8 : 4) | |
481 | #ifdef IN_LIBGCC2 | |
482 | #define MIN_UNITS_PER_WORD UNITS_PER_WORD | |
483 | #else | |
484 | #define MIN_UNITS_PER_WORD 4 | |
485 | #endif | |
486 | ||
487 | /* Now define the sizes of the C data types. */ | |
488 | #define SHORT_TYPE_SIZE 16 | |
489 | #define INT_TYPE_SIZE 32 | |
490 | #define LONG_TYPE_SIZE (TARGET_ARCH64 ? 64 : 32) | |
491 | #define LONG_LONG_TYPE_SIZE 64 | |
492 | ||
493 | /* SPARC_LONG_DOUBLE_TYPE_SIZE is defined per OS even though the | |
494 | SPARC ABI says that it is 128-bit wide. LONG_DOUBLE_TYPE_SIZE | |
495 | get poisoned, so add SPARC_ prefix. */ | |
496 | /* #define SPARC_LONG_DOUBLE_TYPE_SIZE 128 */ | |
497 | ||
498 | /* The widest floating-point format really supported by the hardware. */ | |
499 | #define WIDEST_HARDWARE_FP_SIZE 64 | |
500 | ||
501 | /* Width in bits of a pointer. This is the size of ptr_mode. */ | |
502 | #define POINTER_SIZE (TARGET_PTR64 ? 64 : 32) | |
503 | ||
504 | /* This is the machine mode used for addresses. */ | |
505 | #define Pmode (TARGET_ARCH64 ? DImode : SImode) | |
506 | ||
507 | /* If we have to extend pointers (only when TARGET_ARCH64 and not | |
508 | TARGET_PTR64), we want to do it unsigned. This macro does nothing | |
509 | if ptr_mode and Pmode are the same. */ | |
510 | #define POINTERS_EXTEND_UNSIGNED 1 | |
511 | ||
512 | /* Allocation boundary (in *bits*) for storing arguments in argument list. */ | |
513 | #define PARM_BOUNDARY (TARGET_ARCH64 ? 64 : 32) | |
514 | ||
515 | /* Boundary (in *bits*) on which stack pointer should be aligned. */ | |
516 | /* FIXME, this is wrong when TARGET_ARCH64 and TARGET_STACK_BIAS, because | |
517 | then %sp+2047 is 128-bit aligned so %sp is really only byte-aligned. */ | |
518 | #define STACK_BOUNDARY (TARGET_ARCH64 ? 128 : 64) | |
519 | ||
520 | /* Temporary hack until the FIXME above is fixed. */ | |
521 | #define SPARC_STACK_BOUNDARY_HACK (TARGET_ARCH64 && TARGET_STACK_BIAS) | |
522 | ||
523 | /* ALIGN FRAMES on double word boundaries */ | |
524 | #define SPARC_STACK_ALIGN(LOC) ROUND_UP ((LOC), UNITS_PER_WORD * 2) | |
525 | ||
526 | /* Allocation boundary (in *bits*) for the code of a function. */ | |
527 | #define FUNCTION_BOUNDARY 32 | |
528 | ||
529 | /* Alignment of field after `int : 0' in a structure. */ | |
530 | #define EMPTY_FIELD_BOUNDARY (TARGET_ARCH64 ? 64 : 32) | |
531 | ||
532 | /* Every structure's size must be a multiple of this. */ | |
533 | #define STRUCTURE_SIZE_BOUNDARY 8 | |
534 | ||
535 | /* A bit-field declared as `int' forces `int' alignment for the struct. */ | |
536 | #define PCC_BITFIELD_TYPE_MATTERS 1 | |
537 | ||
538 | /* No data type wants to be aligned rounder than this. */ | |
539 | #define BIGGEST_ALIGNMENT (TARGET_ARCH64 ? 128 : 64) | |
540 | ||
541 | /* The best alignment to use in cases where we have a choice. */ | |
542 | #define FASTEST_ALIGNMENT 64 | |
543 | ||
544 | /* Define this macro as an expression for the alignment of a structure | |
545 | (given by STRUCT as a tree node) if the alignment computed in the | |
546 | usual way is COMPUTED and the alignment explicitly specified was | |
547 | SPECIFIED. | |
548 | ||
549 | The default is to use SPECIFIED if it is larger; otherwise, use | |
550 | the smaller of COMPUTED and `BIGGEST_ALIGNMENT' */ | |
551 | #define ROUND_TYPE_ALIGN(STRUCT, COMPUTED, SPECIFIED) \ | |
552 | (TARGET_FASTER_STRUCTS ? \ | |
553 | (RECORD_OR_UNION_TYPE_P (STRUCT) \ | |
554 | && TYPE_FIELDS (STRUCT) != 0 \ | |
555 | ? MAX (MAX ((COMPUTED), (SPECIFIED)), BIGGEST_ALIGNMENT) \ | |
556 | : MAX ((COMPUTED), (SPECIFIED))) \ | |
557 | : MAX ((COMPUTED), (SPECIFIED))) | |
558 | ||
559 | /* An integer expression for the size in bits of the largest integer machine | |
560 | mode that should actually be used. We allow pairs of registers. */ | |
561 | #define MAX_FIXED_MODE_SIZE GET_MODE_BITSIZE (TARGET_ARCH64 ? TImode : DImode) | |
562 | ||
563 | /* We need 2 words, so we can save the stack pointer and the return register | |
564 | of the function containing a non-local goto target. */ | |
565 | #define STACK_SAVEAREA_MODE(LEVEL) \ | |
566 | ((LEVEL) == SAVE_NONLOCAL ? (TARGET_ARCH64 ? TImode : DImode) : Pmode) | |
567 | ||
568 | /* Make arrays of chars word-aligned for the same reasons. */ | |
569 | #define DATA_ALIGNMENT(TYPE, ALIGN) \ | |
570 | (TREE_CODE (TYPE) == ARRAY_TYPE \ | |
571 | && TYPE_MODE (TREE_TYPE (TYPE)) == QImode \ | |
572 | && (ALIGN) < FASTEST_ALIGNMENT ? FASTEST_ALIGNMENT : (ALIGN)) | |
573 | ||
574 | /* Make local arrays of chars word-aligned for the same reasons. */ | |
575 | #define LOCAL_ALIGNMENT(TYPE, ALIGN) DATA_ALIGNMENT (TYPE, ALIGN) | |
576 | ||
577 | /* Set this nonzero if move instructions will actually fail to work | |
578 | when given unaligned data. */ | |
579 | #define STRICT_ALIGNMENT 1 | |
580 | ||
581 | /* Things that must be doubleword aligned cannot go in the text section, | |
582 | because the linker fails to align the text section enough! | |
583 | Put them in the data section. This macro is only used in this file. */ | |
584 | #define MAX_TEXT_ALIGN 32 | |
585 | \f | |
586 | /* Standard register usage. */ | |
587 | ||
588 | /* Number of actual hardware registers. | |
589 | The hardware registers are assigned numbers for the compiler | |
590 | from 0 to just below FIRST_PSEUDO_REGISTER. | |
591 | All registers that the compiler knows about must be given numbers, | |
592 | even those that are not normally considered general registers. | |
593 | ||
594 | SPARC has 32 integer registers and 32 floating point registers. | |
595 | 64-bit SPARC has 32 additional fp regs, but the odd numbered ones are not | |
596 | accessible. We still account for them to simplify register computations | |
597 | (e.g.: in CLASS_MAX_NREGS). There are also 4 fp condition code registers, so | |
598 | 32+32+32+4 == 100. | |
599 | Register 100 is used as the integer condition code register. | |
600 | Register 101 is used as the soft frame pointer register. | |
601 | Register 102 is used as the general status register by VIS instructions. */ | |
602 | ||
603 | #define FIRST_PSEUDO_REGISTER 103 | |
604 | ||
605 | #define SPARC_FIRST_INT_REG 0 | |
606 | #define SPARC_LAST_INT_REG 31 | |
607 | #define SPARC_FIRST_FP_REG 32 | |
608 | /* Additional V9 fp regs. */ | |
609 | #define SPARC_FIRST_V9_FP_REG 64 | |
610 | #define SPARC_LAST_V9_FP_REG 95 | |
611 | /* V9 %fcc[0123]. V8 uses (figuratively) %fcc0. */ | |
612 | #define SPARC_FIRST_V9_FCC_REG 96 | |
613 | #define SPARC_LAST_V9_FCC_REG 99 | |
614 | /* V8 fcc reg. */ | |
615 | #define SPARC_FCC_REG 96 | |
616 | /* Integer CC reg. We don't distinguish %icc from %xcc. */ | |
617 | #define SPARC_ICC_REG 100 | |
618 | #define SPARC_GSR_REG 102 | |
619 | ||
620 | /* Nonzero if REGNO is an fp reg. */ | |
621 | #define SPARC_FP_REG_P(REGNO) \ | |
622 | ((REGNO) >= SPARC_FIRST_FP_REG && (REGNO) <= SPARC_LAST_V9_FP_REG) | |
623 | ||
624 | /* Nonzero if REGNO is an int reg. */ | |
625 | #define SPARC_INT_REG_P(REGNO) \ | |
626 | (((unsigned) (REGNO)) <= SPARC_LAST_INT_REG) | |
627 | ||
628 | /* Argument passing regs. */ | |
629 | #define SPARC_OUTGOING_INT_ARG_FIRST 8 | |
630 | #define SPARC_INCOMING_INT_ARG_FIRST (TARGET_FLAT ? 8 : 24) | |
631 | #define SPARC_FP_ARG_FIRST 32 | |
632 | ||
633 | /* 1 for registers that have pervasive standard uses | |
634 | and are not available for the register allocator. | |
635 | ||
636 | On non-v9 systems: | |
637 | g1 is free to use as temporary. | |
638 | g2-g4 are reserved for applications. Gcc normally uses them as | |
639 | temporaries, but this can be disabled via the -mno-app-regs option. | |
640 | g5 through g7 are reserved for the operating system. | |
641 | ||
642 | On v9 systems: | |
643 | g1,g5 are free to use as temporaries, and are free to use between calls | |
644 | if the call is to an external function via the PLT. | |
645 | g4 is free to use as a temporary in the non-embedded case. | |
646 | g4 is reserved in the embedded case. | |
647 | g2-g3 are reserved for applications. Gcc normally uses them as | |
648 | temporaries, but this can be disabled via the -mno-app-regs option. | |
649 | g6-g7 are reserved for the operating system (or application in | |
650 | embedded case). | |
651 | ??? Register 1 is used as a temporary by the 64 bit sethi pattern, so must | |
652 | currently be a fixed register until this pattern is rewritten. | |
653 | Register 1 is also used when restoring call-preserved registers in large | |
654 | stack frames. | |
655 | ||
656 | Registers fixed in arch32 and not arch64 (or vice-versa) are marked in | |
657 | TARGET_CONDITIONAL_REGISTER_USAGE in order to properly handle -ffixed-. | |
658 | */ | |
659 | ||
660 | #define FIXED_REGISTERS \ | |
661 | {1, 0, 2, 2, 2, 2, 1, 1, \ | |
662 | 0, 0, 0, 0, 0, 0, 1, 0, \ | |
663 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
664 | 0, 0, 0, 0, 0, 0, 0, 1, \ | |
665 | \ | |
666 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
667 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
668 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
669 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
670 | \ | |
671 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
672 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
673 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
674 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
675 | \ | |
676 | 0, 0, 0, 0, 1, 1, 1} | |
677 | ||
678 | /* 1 for registers not available across function calls. | |
679 | Unlike the above, this need not include the FIXED_REGISTERS, but any | |
680 | registers that can be used without being saved. | |
681 | The latter must include the registers where values are returned | |
682 | and the register where structure-value addresses are passed. | |
683 | Aside from that, you can include as many other registers as you like. */ | |
684 | ||
685 | #define CALL_REALLY_USED_REGISTERS \ | |
686 | {1, 1, 1, 1, 1, 1, 1, 1, \ | |
687 | 1, 1, 1, 1, 1, 1, 1, 1, \ | |
688 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
689 | 0, 0, 0, 0, 0, 0, 0, 0, \ | |
690 | \ | |
691 | 1, 1, 1, 1, 1, 1, 1, 1, \ | |
692 | 1, 1, 1, 1, 1, 1, 1, 1, \ | |
693 | 1, 1, 1, 1, 1, 1, 1, 1, \ | |
694 | 1, 1, 1, 1, 1, 1, 1, 1, \ | |
695 | \ | |
696 | 1, 1, 1, 1, 1, 1, 1, 1, \ | |
697 | 1, 1, 1, 1, 1, 1, 1, 1, \ | |
698 | 1, 1, 1, 1, 1, 1, 1, 1, \ | |
699 | 1, 1, 1, 1, 1, 1, 1, 1, \ | |
700 | \ | |
701 | 1, 1, 1, 1, 1, 1, 1} | |
702 | ||
703 | /* Due to the ARCH64 discrepancy above we must override this next | |
704 | macro too. */ | |
705 | #define REGMODE_NATURAL_SIZE(MODE) sparc_regmode_natural_size (MODE) | |
706 | ||
707 | /* Value is 1 if it is OK to rename a hard register FROM to another hard | |
708 | register TO. We cannot rename %g1 as it may be used before the save | |
709 | register window instruction in the prologue. */ | |
710 | #define HARD_REGNO_RENAME_OK(FROM, TO) ((FROM) != 1) | |
711 | ||
712 | /* Select a register mode required for caller save of hard regno REGNO. | |
713 | Contrary to what is documented, the default is not the smallest suitable | |
714 | mode but the largest suitable mode for the given (REGNO, NREGS) pair and | |
715 | it quickly creates paradoxical subregs that can be problematic. */ | |
716 | #define HARD_REGNO_CALLER_SAVE_MODE(REGNO, NREGS, MODE) \ | |
717 | ((MODE) == VOIDmode ? choose_hard_reg_mode (REGNO, NREGS, NULL) : (MODE)) | |
718 | ||
719 | /* Specify the registers used for certain standard purposes. | |
720 | The values of these macros are register numbers. */ | |
721 | ||
722 | /* Register to use for pushing function arguments. */ | |
723 | #define STACK_POINTER_REGNUM 14 | |
724 | ||
725 | /* The stack bias (amount by which the hardware register is offset by). */ | |
726 | #define SPARC_STACK_BIAS ((TARGET_ARCH64 && TARGET_STACK_BIAS) ? 2047 : 0) | |
727 | ||
728 | /* Actual top-of-stack address is 92/176 greater than the contents of the | |
729 | stack pointer register for !v9/v9. That is: | |
730 | - !v9: 64 bytes for the in and local registers, 4 bytes for structure return | |
731 | address, and 6*4 bytes for the 6 register parameters. | |
732 | - v9: 128 bytes for the in and local registers + 6*8 bytes for the integer | |
733 | parameter regs. */ | |
734 | #define STACK_POINTER_OFFSET (FIRST_PARM_OFFSET(0) + SPARC_STACK_BIAS) | |
735 | ||
736 | /* Unbias the stack pointer if needed, and move past the register save area, | |
737 | that is never in use while a function is active, so that it is regarded as a | |
738 | callee save area rather than as part of the function's own stack area. This | |
739 | enables __strub_leave() to do a better job of clearing the stack frame of a | |
740 | previously-called sibling. */ | |
741 | #define STACK_ADDRESS_OFFSET STACK_POINTER_OFFSET | |
742 | ||
743 | /* Base register for access to local variables of the function. */ | |
744 | #define HARD_FRAME_POINTER_REGNUM 30 | |
745 | ||
746 | /* The soft frame pointer does not have the stack bias applied. */ | |
747 | #define FRAME_POINTER_REGNUM 101 | |
748 | ||
749 | #define INIT_EXPANDERS \ | |
750 | do { \ | |
751 | if (crtl->emit.regno_pointer_align) \ | |
752 | { \ | |
753 | /* The biased stack pointer is only aligned on BITS_PER_UNIT. */\ | |
754 | if (SPARC_STACK_BIAS) \ | |
755 | { \ | |
756 | REGNO_POINTER_ALIGN (STACK_POINTER_REGNUM) \ | |
757 | = BITS_PER_UNIT; \ | |
758 | REGNO_POINTER_ALIGN (HARD_FRAME_POINTER_REGNUM) \ | |
759 | = BITS_PER_UNIT; \ | |
760 | } \ | |
761 | \ | |
762 | /* In 32-bit mode, not everything is double-word aligned. */ \ | |
763 | if (TARGET_ARCH32) \ | |
764 | { \ | |
765 | REGNO_POINTER_ALIGN (VIRTUAL_INCOMING_ARGS_REGNUM) \ | |
766 | = BITS_PER_WORD; \ | |
767 | REGNO_POINTER_ALIGN (VIRTUAL_STACK_DYNAMIC_REGNUM) \ | |
768 | = BITS_PER_WORD; \ | |
769 | REGNO_POINTER_ALIGN (VIRTUAL_OUTGOING_ARGS_REGNUM) \ | |
770 | = BITS_PER_WORD; \ | |
771 | } \ | |
772 | } \ | |
773 | } while (0) | |
774 | ||
775 | /* Base register for access to arguments of the function. */ | |
776 | #define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM | |
777 | ||
778 | /* Register in which static-chain is passed to a function. This must | |
779 | not be a register used by the prologue. */ | |
780 | #define STATIC_CHAIN_REGNUM (TARGET_ARCH64 ? 5 : 2) | |
781 | ||
782 | /* Register which holds the global offset table, if any. */ | |
783 | #define GLOBAL_OFFSET_TABLE_REGNUM 23 | |
784 | ||
785 | /* Register which holds offset table for position-independent data references. | |
786 | The original SPARC ABI imposes no requirement on the choice of the register | |
787 | so we use a pseudo-register to make sure it is properly saved and restored | |
788 | around calls to setjmp. Now the ABI of VxWorks RTP makes it live on entry | |
789 | to PLT entries so we use the canonical GOT register in this case. */ | |
790 | #define PIC_OFFSET_TABLE_REGNUM \ | |
791 | (TARGET_VXWORKS_RTP && flag_pic ? GLOBAL_OFFSET_TABLE_REGNUM : INVALID_REGNUM) | |
792 | ||
793 | /* Pick a default value we can notice from override_options: | |
794 | !v9: Default is on. | |
795 | v9: Default is off. | |
796 | Originally it was -1, but later on the container of options changed to | |
797 | unsigned byte, so we decided to pick 127 as default value, which does | |
798 | reflect an undefined default value in case of 0/1. */ | |
799 | #define DEFAULT_PCC_STRUCT_RETURN 127 | |
800 | ||
801 | /* Functions which return large structures get the address | |
802 | to place the wanted value at offset 64 from the frame. | |
803 | Must reserve 64 bytes for the in and local registers. | |
804 | v9: Functions which return large structures get the address to place the | |
805 | wanted value from an invisible first argument. */ | |
806 | #define STRUCT_VALUE_OFFSET 64 | |
807 | \f | |
808 | /* Define the classes of registers for register constraints in the | |
809 | machine description. Also define ranges of constants. | |
810 | ||
811 | One of the classes must always be named ALL_REGS and include all hard regs. | |
812 | If there is more than one class, another class must be named NO_REGS | |
813 | and contain no registers. | |
814 | ||
815 | The name GENERAL_REGS must be the name of a class (or an alias for | |
816 | another name such as ALL_REGS). This is the class of registers | |
817 | that is allowed by "g" or "r" in a register constraint. | |
818 | Also, registers outside this class are allocated only when | |
819 | instructions express preferences for them. | |
820 | ||
821 | The classes must be numbered in nondecreasing order; that is, | |
822 | a larger-numbered class must never be contained completely | |
823 | in a smaller-numbered class. | |
824 | ||
825 | For any two classes, it is very desirable that there be another | |
826 | class that represents their union. */ | |
827 | ||
828 | /* The SPARC has various kinds of registers: general, floating point, | |
829 | and condition codes [well, it has others as well, but none that we | |
830 | care directly about]. | |
831 | ||
832 | For v9 we must distinguish between the upper and lower floating point | |
833 | registers because the upper ones can't hold SFmode values. | |
834 | TARGET_HARD_REGNO_MODE_OK won't help here because reload assumes that | |
835 | register(s) satisfying a group need for a class will also satisfy a | |
836 | single need for that class. EXTRA_FP_REGS is a bit of a misnomer as | |
837 | it covers all 64 fp regs. | |
838 | ||
839 | It is important that one class contains all the general and all the standard | |
840 | fp regs. Otherwise find_reg() won't properly allocate int regs for moves, | |
841 | because reg_class_record() will bias the selection in favor of fp regs, | |
842 | because reg_class_subunion[GENERAL_REGS][FP_REGS] will yield FP_REGS, | |
843 | because FP_REGS > GENERAL_REGS. | |
844 | ||
845 | It is also important that one class contain all the general and all | |
846 | the fp regs. Otherwise when spilling a DFmode reg, it may be from | |
847 | EXTRA_FP_REGS but find_reloads() may use class | |
848 | GENERAL_OR_FP_REGS. This will cause allocate_reload_reg() to die | |
849 | because the compiler thinks it doesn't have a spill reg when in | |
850 | fact it does. | |
851 | ||
852 | v9 also has 4 floating point condition code registers. Since we don't | |
853 | have a class that is the union of FPCC_REGS with either of the others, | |
854 | it is important that it appear first. Otherwise the compiler will die | |
855 | trying to compile _fixunsdfsi because fix_truncdfsi2 won't match its | |
856 | constraints. */ | |
857 | ||
858 | enum reg_class { NO_REGS, FPCC_REGS, I64_REGS, GENERAL_REGS, FP_REGS, | |
859 | EXTRA_FP_REGS, GENERAL_OR_FP_REGS, GENERAL_OR_EXTRA_FP_REGS, | |
860 | ALL_REGS, LIM_REG_CLASSES }; | |
861 | ||
862 | #define N_REG_CLASSES (int) LIM_REG_CLASSES | |
863 | ||
864 | /* Give names of register classes as strings for dump file. */ | |
865 | ||
866 | #define REG_CLASS_NAMES \ | |
867 | { "NO_REGS", "FPCC_REGS", "I64_REGS", "GENERAL_REGS", "FP_REGS", \ | |
868 | "EXTRA_FP_REGS", "GENERAL_OR_FP_REGS", "GENERAL_OR_EXTRA_FP_REGS", \ | |
869 | "ALL_REGS" } | |
870 | ||
871 | /* Define which registers fit in which classes. | |
872 | This is an initializer for a vector of HARD_REG_SET | |
873 | of length N_REG_CLASSES. */ | |
874 | ||
875 | #define REG_CLASS_CONTENTS \ | |
876 | {{0, 0, 0, 0}, /* NO_REGS */ \ | |
877 | {0, 0, 0, 0xf}, /* FPCC_REGS */ \ | |
878 | {0xffff, 0, 0, 0}, /* I64_REGS */ \ | |
879 | {-1, 0, 0, 0x20}, /* GENERAL_REGS */ \ | |
880 | {0, -1, 0, 0}, /* FP_REGS */ \ | |
881 | {0, -1, -1, 0}, /* EXTRA_FP_REGS */ \ | |
882 | {-1, -1, 0, 0x20}, /* GENERAL_OR_FP_REGS */ \ | |
883 | {-1, -1, -1, 0x20}, /* GENERAL_OR_EXTRA_FP_REGS */ \ | |
884 | {-1, -1, -1, 0x7f}} /* ALL_REGS */ | |
885 | ||
886 | /* The same information, inverted: | |
887 | Return the class number of the smallest class containing | |
888 | reg number REGNO. This could be a conditional expression | |
889 | or could index an array. */ | |
890 | ||
891 | extern enum reg_class sparc_regno_reg_class[FIRST_PSEUDO_REGISTER]; | |
892 | ||
893 | #define REGNO_REG_CLASS(REGNO) sparc_regno_reg_class[(REGNO)] | |
894 | ||
895 | /* This is the order in which to allocate registers normally. | |
896 | ||
897 | We put %f0-%f7 last among the float registers, so as to make it more | |
898 | likely that a pseudo-register which dies in the float return register | |
899 | area will get allocated to the float return register, thus saving a move | |
900 | instruction at the end of the function. | |
901 | ||
902 | Similarly for integer return value registers. | |
903 | ||
904 | We know in this case that we will not end up with a leaf function. | |
905 | ||
906 | The register allocator is given the global and out registers first | |
907 | because these registers are call clobbered and thus less useful to | |
908 | global register allocation. | |
909 | ||
910 | Next we list the local and in registers. They are not call clobbered | |
911 | and thus very useful for global register allocation. We list the input | |
912 | registers before the locals so that it is more likely the incoming | |
913 | arguments received in those registers can just stay there and not be | |
914 | reloaded. */ | |
915 | ||
916 | #define REG_ALLOC_ORDER \ | |
917 | { 1, 2, 3, 4, 5, 6, 7, /* %g1-%g7 */ \ | |
918 | 13, 12, 11, 10, 9, 8, /* %o5-%o0 */ \ | |
919 | 15, /* %o7 */ \ | |
920 | 16, 17, 18, 19, 20, 21, 22, 23, /* %l0-%l7 */ \ | |
921 | 29, 28, 27, 26, 25, 24, 31, /* %i5-%i0,%i7 */\ | |
922 | 40, 41, 42, 43, 44, 45, 46, 47, /* %f8-%f15 */ \ | |
923 | 48, 49, 50, 51, 52, 53, 54, 55, /* %f16-%f23 */ \ | |
924 | 56, 57, 58, 59, 60, 61, 62, 63, /* %f24-%f31 */ \ | |
925 | 64, 65, 66, 67, 68, 69, 70, 71, /* %f32-%f39 */ \ | |
926 | 72, 73, 74, 75, 76, 77, 78, 79, /* %f40-%f47 */ \ | |
927 | 80, 81, 82, 83, 84, 85, 86, 87, /* %f48-%f55 */ \ | |
928 | 88, 89, 90, 91, 92, 93, 94, 95, /* %f56-%f63 */ \ | |
929 | 39, 38, 37, 36, 35, 34, 33, 32, /* %f7-%f0 */ \ | |
930 | 96, 97, 98, 99, /* %fcc0-3 */ \ | |
931 | 100, 0, 14, 30, 101, 102 } /* %icc, %g0, %o6, %i6, %sfp, %gsr */ | |
932 | ||
933 | /* This is the order in which to allocate registers for | |
934 | leaf functions. If all registers can fit in the global and | |
935 | output registers, then we have the possibility of having a leaf | |
936 | function. | |
937 | ||
938 | The macro actually mentioned the input registers first, | |
939 | because they get renumbered into the output registers once | |
940 | we know really do have a leaf function. | |
941 | ||
942 | To be more precise, this register allocation order is used | |
943 | when %o7 is found to not be clobbered right before register | |
944 | allocation. Normally, the reason %o7 would be clobbered is | |
945 | due to a call which could not be transformed into a sibling | |
946 | call. | |
947 | ||
948 | As a consequence, it is possible to use the leaf register | |
949 | allocation order and not end up with a leaf function. We will | |
950 | not get suboptimal register allocation in that case because by | |
951 | definition of being potentially leaf, there were no function | |
952 | calls. Therefore, allocation order within the local register | |
953 | window is not critical like it is when we do have function calls. */ | |
954 | ||
955 | #define REG_LEAF_ALLOC_ORDER \ | |
956 | { 1, 2, 3, 4, 5, 6, 7, /* %g1-%g7 */ \ | |
957 | 29, 28, 27, 26, 25, 24, /* %i5-%i0 */ \ | |
958 | 15, /* %o7 */ \ | |
959 | 13, 12, 11, 10, 9, 8, /* %o5-%o0 */ \ | |
960 | 16, 17, 18, 19, 20, 21, 22, 23, /* %l0-%l7 */ \ | |
961 | 40, 41, 42, 43, 44, 45, 46, 47, /* %f8-%f15 */ \ | |
962 | 48, 49, 50, 51, 52, 53, 54, 55, /* %f16-%f23 */ \ | |
963 | 56, 57, 58, 59, 60, 61, 62, 63, /* %f24-%f31 */ \ | |
964 | 64, 65, 66, 67, 68, 69, 70, 71, /* %f32-%f39 */ \ | |
965 | 72, 73, 74, 75, 76, 77, 78, 79, /* %f40-%f47 */ \ | |
966 | 80, 81, 82, 83, 84, 85, 86, 87, /* %f48-%f55 */ \ | |
967 | 88, 89, 90, 91, 92, 93, 94, 95, /* %f56-%f63 */ \ | |
968 | 39, 38, 37, 36, 35, 34, 33, 32, /* %f7-%f0 */ \ | |
969 | 96, 97, 98, 99, /* %fcc0-3 */ \ | |
970 | 100, 0, 14, 30, 31, 101, 102 } /* %icc, %g0, %o6, %i6, %i7, %sfp, %gsr */ | |
971 | ||
972 | #define ADJUST_REG_ALLOC_ORDER sparc_order_regs_for_local_alloc () | |
973 | ||
974 | extern char sparc_leaf_regs[]; | |
975 | #define LEAF_REGISTERS sparc_leaf_regs | |
976 | ||
977 | #define LEAF_REG_REMAP(REGNO) sparc_leaf_reg_remap (REGNO) | |
978 | ||
979 | /* The class value for index registers, and the one for base regs. */ | |
980 | #define INDEX_REG_CLASS GENERAL_REGS | |
981 | #define BASE_REG_CLASS GENERAL_REGS | |
982 | ||
983 | /* Local macro to handle the two v9 classes of FP regs. */ | |
984 | #define FP_REG_CLASS_P(CLASS) ((CLASS) == FP_REGS || (CLASS) == EXTRA_FP_REGS) | |
985 | ||
986 | /* Predicate for 2-bit and 5-bit unsigned constants. */ | |
987 | #define SPARC_IMM2_P(X) (((unsigned HOST_WIDE_INT) (X) & ~0x3) == 0) | |
988 | #define SPARC_IMM5_P(X) (((unsigned HOST_WIDE_INT) (X) & ~0x1F) == 0) | |
989 | ||
990 | /* Predicates for 5-bit, 10-bit, 11-bit and 13-bit signed constants. */ | |
991 | #define SPARC_SIMM5_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x10 < 0x20) | |
992 | #define SPARC_SIMM10_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x200 < 0x400) | |
993 | #define SPARC_SIMM11_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x400 < 0x800) | |
994 | #define SPARC_SIMM13_P(X) ((unsigned HOST_WIDE_INT) (X) + 0x1000 < 0x2000) | |
995 | ||
996 | /* 10- and 11-bit immediates are only used for a few specific insns. | |
997 | SMALL_INT is used throughout the port so we continue to use it. */ | |
998 | #define SMALL_INT(X) (SPARC_SIMM13_P (INTVAL (X))) | |
999 | ||
1000 | /* Predicate for constants that can be loaded with a sethi instruction. | |
1001 | This is the general, 64-bit aware, bitwise version that ensures that | |
1002 | only constants whose representation fits in the mask | |
1003 | ||
1004 | 0x00000000fffffc00 | |
1005 | ||
1006 | are accepted. It will reject, for example, negative SImode constants | |
1007 | on 64-bit hosts, so correct handling is to mask the value beforehand | |
1008 | according to the mode of the instruction. */ | |
1009 | #define SPARC_SETHI_P(X) \ | |
1010 | (((unsigned HOST_WIDE_INT) (X) \ | |
1011 | & ((unsigned HOST_WIDE_INT) 0x3ff - GET_MODE_MASK (SImode) - 1)) == 0) | |
1012 | ||
1013 | /* Version of the above predicate for SImode constants and below. */ | |
1014 | #define SPARC_SETHI32_P(X) \ | |
1015 | (SPARC_SETHI_P ((unsigned HOST_WIDE_INT) (X) & GET_MODE_MASK (SImode))) | |
1016 | ||
1017 | /* Return the maximum number of consecutive registers | |
1018 | needed to represent mode MODE in a register of class CLASS. */ | |
1019 | /* On SPARC, this is the size of MODE in words. */ | |
1020 | #define CLASS_MAX_NREGS(CLASS, MODE) \ | |
1021 | (FP_REG_CLASS_P (CLASS) ? (GET_MODE_SIZE (MODE) + 3) / 4 \ | |
1022 | : (GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) | |
1023 | \f | |
1024 | /* Stack layout; function entry, exit and calling. */ | |
1025 | ||
1026 | /* Define this if pushing a word on the stack | |
1027 | makes the stack pointer a smaller address. */ | |
1028 | #define STACK_GROWS_DOWNWARD 1 | |
1029 | ||
1030 | /* Define this to nonzero if the nominal address of the stack frame | |
1031 | is at the high-address end of the local variables; | |
1032 | that is, each additional local variable allocated | |
1033 | goes at a more negative offset in the frame. */ | |
1034 | #define FRAME_GROWS_DOWNWARD 1 | |
1035 | ||
1036 | /* Offset of first parameter from the argument pointer register value. | |
1037 | !v9: This is 64 for the ins and locals, plus 4 for the struct-return reg | |
1038 | even if this function isn't going to use it. | |
1039 | v9: This is 128 for the ins and locals. */ | |
1040 | #define FIRST_PARM_OFFSET(FNDECL) \ | |
1041 | (TARGET_ARCH64 ? 16 * UNITS_PER_WORD : STRUCT_VALUE_OFFSET + UNITS_PER_WORD) | |
1042 | ||
1043 | /* Offset from the argument pointer register value to the CFA. | |
1044 | This is different from FIRST_PARM_OFFSET because the register window | |
1045 | comes between the CFA and the arguments. */ | |
1046 | #define ARG_POINTER_CFA_OFFSET(FNDECL) 0 | |
1047 | ||
1048 | /* When a parameter is passed in a register, stack space is still | |
1049 | allocated for it. | |
1050 | !v9: All 6 possible integer registers have backing store allocated. | |
1051 | v9: Only space for the arguments passed is allocated. */ | |
1052 | /* ??? Ideally, we'd use zero here (as the minimum), but zero has special | |
1053 | meaning to the backend. Further, we need to be able to detect if a | |
1054 | varargs/unprototyped function is called, as they may want to spill more | |
1055 | registers than we've provided space. Ugly, ugly. So for now we retain | |
1056 | all 6 slots even for v9. */ | |
1057 | #define REG_PARM_STACK_SPACE(DECL) (6 * UNITS_PER_WORD) | |
1058 | ||
1059 | /* Definitions for register elimination. */ | |
1060 | ||
1061 | #define ELIMINABLE_REGS \ | |
1062 | {{ FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \ | |
1063 | { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM} } | |
1064 | ||
1065 | #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ | |
1066 | do \ | |
1067 | { \ | |
1068 | (OFFSET) = sparc_initial_elimination_offset ((TO)); \ | |
1069 | } \ | |
1070 | while (0) | |
1071 | ||
1072 | /* Keep the stack pointer constant throughout the function. | |
1073 | This is both an optimization and a necessity: longjmp | |
1074 | doesn't behave itself when the stack pointer moves within | |
1075 | the function! */ | |
1076 | #define ACCUMULATE_OUTGOING_ARGS 1 | |
1077 | ||
1078 | /* Define this macro if the target machine has "register windows". This | |
1079 | C expression returns the register number as seen by the called function | |
1080 | corresponding to register number OUT as seen by the calling function. | |
1081 | Return OUT if register number OUT is not an outbound register. */ | |
1082 | ||
1083 | #define INCOMING_REGNO(OUT) \ | |
1084 | ((TARGET_FLAT || (OUT) < 8 || (OUT) > 15) ? (OUT) : (OUT) + 16) | |
1085 | ||
1086 | /* Define this macro if the target machine has "register windows". This | |
1087 | C expression returns the register number as seen by the calling function | |
1088 | corresponding to register number IN as seen by the called function. | |
1089 | Return IN if register number IN is not an inbound register. */ | |
1090 | ||
1091 | #define OUTGOING_REGNO(IN) \ | |
1092 | ((TARGET_FLAT || (IN) < 24 || (IN) > 31) ? (IN) : (IN) - 16) | |
1093 | ||
1094 | /* Define this macro if the target machine has register windows. This | |
1095 | C expression returns true if the register is call-saved but is in the | |
1096 | register window. */ | |
1097 | ||
1098 | #define LOCAL_REGNO(REGNO) \ | |
1099 | (!TARGET_FLAT && (REGNO) >= 16 && (REGNO) <= 31) | |
1100 | ||
1101 | /* Define the size of space to allocate for the return value of an | |
1102 | untyped_call. */ | |
1103 | ||
1104 | #define APPLY_RESULT_SIZE (TARGET_ARCH64 ? 24 : 16) | |
1105 | ||
1106 | /* 1 if N is a possible register number for function argument passing. | |
1107 | On SPARC, these are the "output" registers. v9 also uses %f0-%f31. */ | |
1108 | ||
1109 | #define FUNCTION_ARG_REGNO_P(N) \ | |
1110 | (((N) >= 8 && (N) <= 13) \ | |
1111 | || (TARGET_ARCH64 && TARGET_FPU && (N) >= 32 && (N) <= 63)) | |
1112 | \f | |
1113 | /* Define a data type for recording info about an argument list | |
1114 | during the scan of that argument list. This data type should | |
1115 | hold all necessary information about the function itself | |
1116 | and about the args processed so far, enough to enable macros | |
1117 | such as FUNCTION_ARG to determine where the next arg should go. | |
1118 | ||
1119 | On SPARC (!v9), this is a single integer, which is a number of words | |
1120 | of arguments scanned so far (including the invisible argument, | |
1121 | if any, which holds the structure-value-address). | |
1122 | Thus 7 or more means all following args should go on the stack. | |
1123 | ||
1124 | For v9, we also need to know whether a prototype is present. */ | |
1125 | ||
1126 | struct sparc_args { | |
1127 | int words; /* number of words passed so far */ | |
1128 | int prototype_p; /* nonzero if a prototype is present */ | |
1129 | int libcall_p; /* nonzero if a library call */ | |
1130 | }; | |
1131 | #define CUMULATIVE_ARGS struct sparc_args | |
1132 | ||
1133 | /* Initialize a variable CUM of type CUMULATIVE_ARGS | |
1134 | for a call to a function whose data type is FNTYPE. | |
1135 | For a library call, FNTYPE is 0. */ | |
1136 | ||
1137 | #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \ | |
1138 | init_cumulative_args (& (CUM), (FNTYPE), (LIBNAME), (FNDECL)); | |
1139 | ||
1140 | \f | |
1141 | /* Generate the special assembly code needed to tell the assembler whatever | |
1142 | it might need to know about the return value of a function. | |
1143 | ||
1144 | For SPARC assemblers, we need to output a .proc pseudo-op which conveys | |
1145 | information to the assembler relating to peephole optimization (done in | |
1146 | the assembler). */ | |
1147 | ||
1148 | #define ASM_DECLARE_RESULT(FILE, RESULT) \ | |
1149 | fprintf ((FILE), "\t.proc\t0%lo\n", sparc_type_code (TREE_TYPE (RESULT))) | |
1150 | ||
1151 | /* Output the special assembly code needed to tell the assembler some | |
1152 | register is used as global register variable. | |
1153 | ||
1154 | SPARC 64bit psABI declares registers %g2 and %g3 as application | |
1155 | registers and %g6 and %g7 as OS registers. Any object using them | |
1156 | should declare (for %g2/%g3 has to, for %g6/%g7 can) that it uses them | |
1157 | and how they are used (scratch or some global variable). | |
1158 | Linker will then refuse to link together objects which use those | |
1159 | registers incompatibly. | |
1160 | ||
1161 | Unless the registers are used for scratch, two different global | |
1162 | registers cannot be declared to the same name, so in the unlikely | |
1163 | case of a global register variable occupying more than one register | |
1164 | we prefix the second and following registers with .gnu.part1. etc. */ | |
1165 | ||
1166 | extern GTY(()) char sparc_hard_reg_printed[8]; | |
1167 | ||
1168 | #define ASM_DECLARE_REGISTER_GLOBAL(FILE, DECL, REGNO, NAME) \ | |
1169 | do { \ | |
1170 | if (TARGET_ARCH64) \ | |
1171 | { \ | |
1172 | int end = end_hard_regno (DECL_MODE (decl), REGNO); \ | |
1173 | int reg; \ | |
1174 | for (reg = (REGNO); reg < 8 && reg < end; reg++) \ | |
1175 | if ((reg & ~1) == 2 || (reg & ~1) == 6) \ | |
1176 | { \ | |
1177 | if (reg == (REGNO)) \ | |
1178 | fprintf ((FILE), "\t.register\t%%g%d, %s\n", reg, (NAME)); \ | |
1179 | else \ | |
1180 | fprintf ((FILE), "\t.register\t%%g%d, .gnu.part%d.%s\n", \ | |
1181 | reg, reg - (REGNO), (NAME)); \ | |
1182 | sparc_hard_reg_printed[reg] = 1; \ | |
1183 | } \ | |
1184 | } \ | |
1185 | } while (0) | |
1186 | \f | |
1187 | /* Emit rtl for profiling. */ | |
1188 | #define PROFILE_HOOK(LABEL) sparc_profile_hook (LABEL) | |
1189 | ||
1190 | /* All the work done in PROFILE_HOOK, but still required. */ | |
1191 | #define FUNCTION_PROFILER(FILE, LABELNO) do { } while (0) | |
1192 | ||
1193 | /* Set the name of the mcount function for the system. */ | |
1194 | #define MCOUNT_FUNCTION "*mcount" | |
1195 | \f | |
1196 | /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function, | |
1197 | the stack pointer does not matter. The value is tested only in | |
1198 | functions that have frame pointers. */ | |
1199 | #define EXIT_IGNORE_STACK 1 | |
1200 | ||
1201 | /* Length in units of the trampoline for entering a nested function. */ | |
1202 | #define TRAMPOLINE_SIZE (TARGET_ARCH64 ? 32 : 16) | |
1203 | ||
1204 | /* Alignment required for trampolines, in bits. */ | |
1205 | #define TRAMPOLINE_ALIGNMENT 128 | |
1206 | \f | |
1207 | /* Generate RTL to flush the register windows so as to make arbitrary frames | |
1208 | available. */ | |
1209 | #define SETUP_FRAME_ADDRESSES() \ | |
1210 | do { \ | |
1211 | if (!TARGET_FLAT) \ | |
1212 | emit_insn (gen_flush_register_windows ());\ | |
1213 | } while (0) | |
1214 | ||
1215 | /* Given an rtx for the address of a frame, | |
1216 | return an rtx for the address of the word in the frame | |
1217 | that holds the dynamic chain--the previous frame's address. */ | |
1218 | #define DYNAMIC_CHAIN_ADDRESS(frame) \ | |
1219 | plus_constant (Pmode, frame, 14 * UNITS_PER_WORD + SPARC_STACK_BIAS) | |
1220 | ||
1221 | /* Given an rtx for the frame pointer, | |
1222 | return an rtx for the address of the frame. */ | |
1223 | #define FRAME_ADDR_RTX(frame) plus_constant (Pmode, frame, SPARC_STACK_BIAS) | |
1224 | ||
1225 | /* The return address isn't on the stack, it is in a register, so we can't | |
1226 | access it from the current frame pointer. We can access it from the | |
1227 | previous frame pointer though by reading a value from the register window | |
1228 | save area. */ | |
1229 | #define RETURN_ADDR_IN_PREVIOUS_FRAME 1 | |
1230 | ||
1231 | /* This is the offset of the return address to the true next instruction to be | |
1232 | executed for the current function. */ | |
1233 | #define RETURN_ADDR_OFFSET \ | |
1234 | (8 + 4 * (! TARGET_ARCH64 && cfun->returns_struct)) | |
1235 | ||
1236 | /* The current return address is in %i7. The return address of anything | |
1237 | farther back is in the register window save area at [%fp+60]. */ | |
1238 | /* ??? This ignores the fact that the actual return address is +8 for normal | |
1239 | returns, and +12 for structure returns. */ | |
1240 | #define RETURN_ADDR_REGNUM 31 | |
1241 | #define RETURN_ADDR_RTX(count, frame) \ | |
1242 | ((count == -1) \ | |
1243 | ? gen_rtx_REG (Pmode, RETURN_ADDR_REGNUM) \ | |
1244 | : gen_rtx_MEM (Pmode, \ | |
1245 | memory_address (Pmode, plus_constant (Pmode, frame, \ | |
1246 | 15 * UNITS_PER_WORD \ | |
1247 | + SPARC_STACK_BIAS)))) | |
1248 | ||
1249 | /* Before the prologue, the return address is %o7 + 8. OK, sometimes it's | |
1250 | +12, but always using +8 is close enough for frame unwind purposes. | |
1251 | Actually, just using %o7 is close enough for unwinding, but %o7+8 | |
1252 | is something you can return to. */ | |
1253 | #define INCOMING_RETURN_ADDR_REGNUM 15 | |
1254 | #define INCOMING_RETURN_ADDR_RTX \ | |
1255 | plus_constant (word_mode, \ | |
1256 | gen_rtx_REG (word_mode, INCOMING_RETURN_ADDR_REGNUM), 8) | |
1257 | #define DWARF_FRAME_RETURN_COLUMN \ | |
1258 | DWARF_FRAME_REGNUM (INCOMING_RETURN_ADDR_REGNUM) | |
1259 | ||
1260 | /* The offset from the incoming value of %sp to the top of the stack frame | |
1261 | for the current function. On sparc64, we have to account for the stack | |
1262 | bias if present. */ | |
1263 | #define INCOMING_FRAME_SP_OFFSET SPARC_STACK_BIAS | |
1264 | ||
1265 | /* Describe how we implement __builtin_eh_return. */ | |
1266 | #define EH_RETURN_REGNUM 1 | |
1267 | #define EH_RETURN_DATA_REGNO(N) ((N) < 4 ? (N) + 24 : INVALID_REGNUM) | |
1268 | #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (Pmode, EH_RETURN_REGNUM) | |
1269 | ||
1270 | /* Define registers used by the epilogue and return instruction. */ | |
1271 | #define EPILOGUE_USES(REGNO) \ | |
1272 | ((REGNO) == RETURN_ADDR_REGNUM \ | |
1273 | || (TARGET_FLAT \ | |
1274 | && epilogue_completed \ | |
1275 | && (REGNO) == INCOMING_RETURN_ADDR_REGNUM) \ | |
1276 | || (crtl->calls_eh_return && (REGNO) == EH_RETURN_REGNUM)) | |
1277 | ||
1278 | /* Select a format to encode pointers in exception handling data. CODE | |
1279 | is 0 for data, 1 for code labels, 2 for function pointers. GLOBAL is | |
1280 | true if the symbol may be affected by dynamic relocations. | |
1281 | ||
1282 | If assembler and linker properly support .uaword %r_disp32(foo), | |
1283 | then use PC relative 32-bit relocations instead of absolute relocs | |
1284 | for shared libraries. On sparc64, use pc relative 32-bit relocs even | |
1285 | for binaries, to save memory. | |
1286 | ||
1287 | binutils 2.12 would emit a R_SPARC_DISP32 dynamic relocation if the | |
1288 | symbol %r_disp32() is against was not local, but .hidden. In that | |
1289 | case, we have to use DW_EH_PE_absptr for pic personality. */ | |
1290 | #ifdef HAVE_AS_SPARC_UA_PCREL | |
1291 | #ifdef HAVE_AS_SPARC_UA_PCREL_HIDDEN | |
1292 | #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ | |
1293 | (flag_pic \ | |
1294 | ? (GLOBAL ? DW_EH_PE_indirect : 0) | DW_EH_PE_pcrel | DW_EH_PE_sdata4\ | |
1295 | : ((TARGET_ARCH64 && ! GLOBAL) \ | |
1296 | ? (DW_EH_PE_pcrel | DW_EH_PE_sdata4) \ | |
1297 | : DW_EH_PE_absptr)) | |
1298 | #else | |
1299 | #define ASM_PREFERRED_EH_DATA_FORMAT(CODE,GLOBAL) \ | |
1300 | (flag_pic \ | |
1301 | ? (GLOBAL ? DW_EH_PE_absptr : (DW_EH_PE_pcrel | DW_EH_PE_sdata4)) \ | |
1302 | : ((TARGET_ARCH64 && ! GLOBAL) \ | |
1303 | ? (DW_EH_PE_pcrel | DW_EH_PE_sdata4) \ | |
1304 | : DW_EH_PE_absptr)) | |
1305 | #endif | |
1306 | ||
1307 | /* Emit a PC-relative relocation. */ | |
1308 | #define ASM_OUTPUT_DWARF_PCREL(FILE, SIZE, LABEL) \ | |
1309 | do { \ | |
1310 | fputs (integer_asm_op (SIZE, FALSE), FILE); \ | |
1311 | fprintf (FILE, "%%r_disp%d(", SIZE * 8); \ | |
1312 | assemble_name (FILE, LABEL); \ | |
1313 | fputc (')', FILE); \ | |
1314 | } while (0) | |
1315 | #endif | |
1316 | \f | |
1317 | /* Addressing modes, and classification of registers for them. */ | |
1318 | ||
1319 | /* Macros to check register numbers against specific register classes. */ | |
1320 | ||
1321 | /* These assume that REGNO is a hard or pseudo reg number. | |
1322 | They give nonzero only if REGNO is a hard reg of the suitable class | |
1323 | or a pseudo reg currently allocated to a suitable hard reg. | |
1324 | Since they use reg_renumber, they are safe only once reg_renumber | |
1325 | has been allocated, which happens in reginfo.cc during register | |
1326 | allocation. */ | |
1327 | ||
1328 | #define REGNO_OK_FOR_INDEX_P(REGNO) \ | |
1329 | (SPARC_INT_REG_P (REGNO) || SPARC_INT_REG_P (reg_renumber[REGNO]) \ | |
1330 | || (REGNO) == FRAME_POINTER_REGNUM \ | |
1331 | || reg_renumber[REGNO] == FRAME_POINTER_REGNUM) | |
1332 | ||
1333 | #define REGNO_OK_FOR_BASE_P(REGNO) REGNO_OK_FOR_INDEX_P (REGNO) | |
1334 | ||
1335 | #define REGNO_OK_FOR_FP_P(REGNO) \ | |
1336 | (((unsigned) (REGNO) - 32 < (TARGET_V9 ? (unsigned)64 : (unsigned)32)) \ | |
1337 | || ((unsigned) reg_renumber[REGNO] - 32 < (TARGET_V9 ? (unsigned)64 : (unsigned)32))) | |
1338 | ||
1339 | #define REGNO_OK_FOR_CCFP_P(REGNO) \ | |
1340 | (TARGET_V9 \ | |
1341 | && (((unsigned) (REGNO) - 96 < (unsigned)4) \ | |
1342 | || ((unsigned) reg_renumber[REGNO] - 96 < (unsigned)4))) | |
1343 | \f | |
1344 | /* Maximum number of registers that can appear in a valid memory address. */ | |
1345 | ||
1346 | #define MAX_REGS_PER_ADDRESS 2 | |
1347 | ||
1348 | /* Recognize any constant value that is a valid address. | |
1349 | When PIC, we do not accept an address that would require a scratch reg | |
1350 | to load into a register. */ | |
1351 | ||
1352 | #define CONSTANT_ADDRESS_P(X) constant_address_p (X) | |
1353 | ||
1354 | /* Define this, so that when PIC, reload won't try to reload invalid | |
1355 | addresses which require two reload registers. */ | |
1356 | ||
1357 | #define LEGITIMATE_PIC_OPERAND_P(X) legitimate_pic_operand_p (X) | |
1358 | \f | |
1359 | /* Should gcc use [%reg+%lo(xx)+offset] addresses? */ | |
1360 | ||
1361 | #ifdef HAVE_AS_OFFSETABLE_LO10 | |
1362 | #define USE_AS_OFFSETABLE_LO10 1 | |
1363 | #else | |
1364 | #define USE_AS_OFFSETABLE_LO10 0 | |
1365 | #endif | |
1366 | \f | |
1367 | /* Try a machine-dependent way of reloading an illegitimate address | |
1368 | operand. If we find one, push the reload and jump to WIN. This | |
1369 | macro is used in only one place: `find_reloads_address' in reload.cc. */ | |
1370 | #define LEGITIMIZE_RELOAD_ADDRESS(X,MODE,OPNUM,TYPE,IND_LEVELS,WIN) \ | |
1371 | do { \ | |
1372 | int win; \ | |
1373 | (X) = sparc_legitimize_reload_address ((X), (MODE), (OPNUM), \ | |
1374 | (int)(TYPE), (IND_LEVELS), &win); \ | |
1375 | if (win) \ | |
1376 | goto WIN; \ | |
1377 | } while (0) | |
1378 | \f | |
1379 | /* Specify the machine mode that this machine uses | |
1380 | for the index in the tablejump instruction. */ | |
1381 | /* If we ever implement any of the full models (such as CM_FULLANY), | |
1382 | this has to be DImode in that case */ | |
1383 | #ifdef HAVE_GAS_SUBSECTION_ORDERING | |
1384 | #define CASE_VECTOR_MODE \ | |
1385 | (! TARGET_PTR64 ? SImode : flag_pic ? SImode : TARGET_CM_MEDLOW ? SImode : DImode) | |
1386 | #else | |
1387 | /* If assembler does not have working .subsection -1, we use DImode for pic, as otherwise | |
1388 | we have to sign extend which slows things down. */ | |
1389 | #define CASE_VECTOR_MODE \ | |
1390 | (! TARGET_PTR64 ? SImode : flag_pic ? DImode : TARGET_CM_MEDLOW ? SImode : DImode) | |
1391 | #endif | |
1392 | ||
1393 | /* Define this as 1 if `char' should by default be signed; else as 0. */ | |
1394 | #define DEFAULT_SIGNED_CHAR 1 | |
1395 | ||
1396 | /* Max number of bytes we can move from memory to memory | |
1397 | in one reasonably fast instruction. */ | |
1398 | #define MOVE_MAX 8 | |
1399 | ||
1400 | /* If a memory-to-memory move would take MOVE_RATIO or more simple | |
1401 | move-instruction pairs, we will do a cpymem or libcall instead. */ | |
1402 | ||
1403 | #define MOVE_RATIO(speed) ((speed) ? 8 : 3) | |
1404 | ||
1405 | /* Define if operations between registers always perform the operation | |
1406 | on the full register even if a narrower mode is specified. */ | |
1407 | #define WORD_REGISTER_OPERATIONS 1 | |
1408 | ||
1409 | /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD | |
1410 | will either zero-extend or sign-extend. The value of this macro should | |
1411 | be the code that says which one of the two operations is implicitly | |
1412 | done, UNKNOWN if none. */ | |
1413 | #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND | |
1414 | ||
1415 | /* Nonzero if access to memory by bytes is slow and undesirable. | |
1416 | For RISC chips, it means that access to memory by bytes is no | |
1417 | better than access by words when possible, so grab a whole word | |
1418 | and maybe make use of that. */ | |
1419 | #define SLOW_BYTE_ACCESS 1 | |
1420 | ||
1421 | /* Define this to be nonzero if shift instructions ignore all but the low-order | |
1422 | few bits. */ | |
1423 | #define SHIFT_COUNT_TRUNCATED 1 | |
1424 | ||
1425 | /* For SImode, we make sure the top 32-bits of the register are clear and | |
1426 | then we subtract 32 from the lzd instruction result. */ | |
1427 | #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \ | |
1428 | ((VALUE) = ((MODE) == SImode ? 32 : 64), 1) | |
1429 | ||
1430 | /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE, | |
1431 | return the mode to be used for the comparison. For floating-point, | |
1432 | CCFP[E]mode is used. CCNZmode should be used when the first operand | |
1433 | is a PLUS, MINUS, NEG, or ASHIFT. CCmode should be used when no special | |
1434 | processing is needed. */ | |
1435 | #define SELECT_CC_MODE(OP,X,Y) select_cc_mode ((OP), (X), (Y)) | |
1436 | ||
1437 | /* Return nonzero if MODE implies a floating point inequality can be | |
1438 | reversed. For SPARC this is always true because we have a full | |
1439 | compliment of ordered and unordered comparisons, but until generic | |
1440 | code knows how to reverse it correctly we keep the old definition. */ | |
1441 | #define REVERSIBLE_CC_MODE(MODE) ((MODE) != CCFPEmode && (MODE) != CCFPmode) | |
1442 | ||
1443 | /* A function address in a call instruction for indexing purposes. */ | |
1444 | #define FUNCTION_MODE Pmode | |
1445 | ||
1446 | /* Define this if addresses of constant functions | |
1447 | shouldn't be put through pseudo regs where they can be cse'd. | |
1448 | Desirable on machines where ordinary constants are expensive | |
1449 | but a CALL with constant address is cheap. */ | |
1450 | #define NO_FUNCTION_CSE 1 | |
1451 | ||
1452 | /* The _Q_* comparison libcalls return booleans. */ | |
1453 | #define FLOAT_LIB_COMPARE_RETURNS_BOOL(MODE, COMPARISON) ((MODE) == TFmode) | |
1454 | ||
1455 | /* Assume by default that the _Qp_* 64-bit libcalls are implemented such | |
1456 | that the inputs are fully consumed before the output memory is clobbered. */ | |
1457 | ||
1458 | #define TARGET_BUGGY_QP_LIB 0 | |
1459 | ||
1460 | /* Assume by default that we do not have the Solaris-specific conversion | |
1461 | routines nor 64-bit integer multiply and divide routines. */ | |
1462 | ||
1463 | #define SUN_CONVERSION_LIBFUNCS 0 | |
1464 | #define DITF_CONVERSION_LIBFUNCS 0 | |
1465 | #define SUN_INTEGER_MULTIPLY_64 0 | |
1466 | ||
1467 | /* A C expression for the cost of a branch instruction. A value of 1 | |
1468 | is the default; other values are interpreted relative to that. */ | |
1469 | #define BRANCH_COST(SPEED_P, PREDICTABLE_P) \ | |
1470 | (sparc_branch_cost (SPEED_P, PREDICTABLE_P)) | |
1471 | \f | |
1472 | /* Control the assembler format that we output. */ | |
1473 | ||
1474 | /* A C string constant describing how to begin a comment in the target | |
1475 | assembler language. The compiler assumes that the comment will end at | |
1476 | the end of the line. */ | |
1477 | ||
1478 | #define ASM_COMMENT_START "!" | |
1479 | ||
1480 | /* Output to assembler file text saying following lines | |
1481 | may contain character constants, extra white space, comments, etc. */ | |
1482 | ||
1483 | #define ASM_APP_ON "" | |
1484 | ||
1485 | /* Output to assembler file text saying following lines | |
1486 | no longer contain unusual constructs. */ | |
1487 | ||
1488 | #define ASM_APP_OFF "" | |
1489 | ||
1490 | /* How to refer to registers in assembler output. | |
1491 | This sequence is indexed by compiler's hard-register-number (see above). */ | |
1492 | ||
1493 | #define REGISTER_NAMES \ | |
1494 | {"%g0", "%g1", "%g2", "%g3", "%g4", "%g5", "%g6", "%g7", \ | |
1495 | "%o0", "%o1", "%o2", "%o3", "%o4", "%o5", "%sp", "%o7", \ | |
1496 | "%l0", "%l1", "%l2", "%l3", "%l4", "%l5", "%l6", "%l7", \ | |
1497 | "%i0", "%i1", "%i2", "%i3", "%i4", "%i5", "%fp", "%i7", \ | |
1498 | "%f0", "%f1", "%f2", "%f3", "%f4", "%f5", "%f6", "%f7", \ | |
1499 | "%f8", "%f9", "%f10", "%f11", "%f12", "%f13", "%f14", "%f15", \ | |
1500 | "%f16", "%f17", "%f18", "%f19", "%f20", "%f21", "%f22", "%f23", \ | |
1501 | "%f24", "%f25", "%f26", "%f27", "%f28", "%f29", "%f30", "%f31", \ | |
1502 | "%f32", "%f33", "%f34", "%f35", "%f36", "%f37", "%f38", "%f39", \ | |
1503 | "%f40", "%f41", "%f42", "%f43", "%f44", "%f45", "%f46", "%f47", \ | |
1504 | "%f48", "%f49", "%f50", "%f51", "%f52", "%f53", "%f54", "%f55", \ | |
1505 | "%f56", "%f57", "%f58", "%f59", "%f60", "%f61", "%f62", "%f63", \ | |
1506 | "%fcc0", "%fcc1", "%fcc2", "%fcc3", "%icc", "%sfp", "%gsr" } | |
1507 | ||
1508 | /* Define additional names for use in asm clobbers and asm declarations. */ | |
1509 | ||
1510 | #define ADDITIONAL_REGISTER_NAMES \ | |
1511 | {{"ccr", SPARC_ICC_REG}, {"cc", SPARC_ICC_REG}} | |
1512 | ||
1513 | /* This is how to output a command to make the user-level label named NAME | |
1514 | defined for reference from other files. */ | |
1515 | ||
1516 | /* Globalizing directive for a label. */ | |
1517 | #define GLOBAL_ASM_OP "\t.global " | |
1518 | ||
1519 | /* The prefix to add to user-visible assembler symbols. */ | |
1520 | ||
1521 | #define USER_LABEL_PREFIX "_" | |
1522 | ||
1523 | /* This is how to store into the string LABEL | |
1524 | the symbol_ref name of an internal numbered label where | |
1525 | PREFIX is the class of label and NUM is the number within the class. | |
1526 | This is suitable for output with `assemble_name'. */ | |
1527 | ||
1528 | #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM) \ | |
1529 | sprintf ((LABEL), "*%s%ld", (PREFIX), (long)(NUM)) | |
1530 | ||
1531 | /* This is how we hook in and defer the case-vector until the end of | |
1532 | the function. */ | |
1533 | #define ASM_OUTPUT_ADDR_VEC(LAB,VEC) \ | |
1534 | sparc_defer_case_vector ((LAB),(VEC), 0) | |
1535 | ||
1536 | #define ASM_OUTPUT_ADDR_DIFF_VEC(LAB,VEC) \ | |
1537 | sparc_defer_case_vector ((LAB),(VEC), 1) | |
1538 | ||
1539 | /* This is how to output an element of a case-vector that is absolute. */ | |
1540 | ||
1541 | #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \ | |
1542 | do { \ | |
1543 | char label[30]; \ | |
1544 | ASM_GENERATE_INTERNAL_LABEL (label, "L", VALUE); \ | |
1545 | if (CASE_VECTOR_MODE == SImode) \ | |
1546 | fprintf (FILE, "\t.word\t"); \ | |
1547 | else \ | |
1548 | fprintf (FILE, "\t.xword\t"); \ | |
1549 | assemble_name (FILE, label); \ | |
1550 | fputc ('\n', FILE); \ | |
1551 | } while (0) | |
1552 | ||
1553 | /* This is how to output an element of a case-vector that is relative. | |
1554 | (SPARC uses such vectors only when generating PIC.) */ | |
1555 | ||
1556 | #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \ | |
1557 | do { \ | |
1558 | char label[30]; \ | |
1559 | ASM_GENERATE_INTERNAL_LABEL (label, "L", (VALUE)); \ | |
1560 | if (CASE_VECTOR_MODE == SImode) \ | |
1561 | fprintf (FILE, "\t.word\t"); \ | |
1562 | else \ | |
1563 | fprintf (FILE, "\t.xword\t"); \ | |
1564 | assemble_name (FILE, label); \ | |
1565 | ASM_GENERATE_INTERNAL_LABEL (label, "L", (REL)); \ | |
1566 | fputc ('-', FILE); \ | |
1567 | assemble_name (FILE, label); \ | |
1568 | fputc ('\n', FILE); \ | |
1569 | } while (0) | |
1570 | ||
1571 | /* This is what to output before and after case-vector (both | |
1572 | relative and absolute). If .subsection -1 works, we put case-vectors | |
1573 | at the beginning of the current section. */ | |
1574 | ||
1575 | #ifdef HAVE_GAS_SUBSECTION_ORDERING | |
1576 | ||
1577 | #define ASM_OUTPUT_ADDR_VEC_START(FILE) \ | |
1578 | fprintf(FILE, "\t.subsection\t-1\n") | |
1579 | ||
1580 | #define ASM_OUTPUT_ADDR_VEC_END(FILE) \ | |
1581 | fprintf(FILE, "\t.previous\n") | |
1582 | ||
1583 | #endif | |
1584 | ||
1585 | /* This is how to output an assembler line | |
1586 | that says to advance the location counter | |
1587 | to a multiple of 2**LOG bytes. */ | |
1588 | ||
1589 | #define ASM_OUTPUT_ALIGN(FILE,LOG) \ | |
1590 | if ((LOG) != 0) \ | |
1591 | fprintf (FILE, "\t.align %d\n", (1 << (LOG))) | |
1592 | ||
1593 | #define ASM_OUTPUT_SKIP(FILE,SIZE) \ | |
1594 | fprintf (FILE, "\t.skip " HOST_WIDE_INT_PRINT_UNSIGNED"\n", (SIZE)) | |
1595 | ||
1596 | /* This says how to output an assembler line | |
1597 | to define a global common symbol. */ | |
1598 | ||
1599 | #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED) \ | |
1600 | ( fputs ("\t.common ", (FILE)), \ | |
1601 | assemble_name ((FILE), (NAME)), \ | |
1602 | fprintf ((FILE), "," HOST_WIDE_INT_PRINT_UNSIGNED",\"bss\"\n", (SIZE))) | |
1603 | ||
1604 | /* This says how to output an assembler line to define a local common | |
1605 | symbol. */ | |
1606 | ||
1607 | #define ASM_OUTPUT_ALIGNED_LOCAL(FILE, NAME, SIZE, ALIGNED) \ | |
1608 | ( fputs ("\t.reserve ", (FILE)), \ | |
1609 | assemble_name ((FILE), (NAME)), \ | |
1610 | fprintf ((FILE), "," HOST_WIDE_INT_PRINT_UNSIGNED",\"bss\",%u\n", \ | |
1611 | (SIZE), ((ALIGNED) / BITS_PER_UNIT))) | |
1612 | ||
1613 | /* A C statement (sans semicolon) to output to the stdio stream | |
1614 | FILE the assembler definition of uninitialized global DECL named | |
1615 | NAME whose size is SIZE bytes and alignment is ALIGN bytes. | |
1616 | Try to use asm_output_aligned_bss to implement this macro. */ | |
1617 | ||
1618 | #define ASM_OUTPUT_ALIGNED_BSS(FILE, DECL, NAME, SIZE, ALIGN) \ | |
1619 | do { \ | |
1620 | ASM_OUTPUT_ALIGNED_LOCAL (FILE, NAME, SIZE, ALIGN); \ | |
1621 | } while (0) | |
1622 | ||
1623 | /* Output #ident as a .ident. */ | |
1624 | ||
1625 | #undef TARGET_ASM_OUTPUT_IDENT | |
1626 | #define TARGET_ASM_OUTPUT_IDENT default_asm_output_ident_directive | |
1627 | ||
1628 | /* Prettify the assembly. */ | |
1629 | ||
1630 | extern int sparc_indent_opcode; | |
1631 | ||
1632 | #define ASM_OUTPUT_OPCODE(FILE, PTR) \ | |
1633 | do { \ | |
1634 | if (sparc_indent_opcode) \ | |
1635 | { \ | |
1636 | putc (' ', FILE); \ | |
1637 | sparc_indent_opcode = 0; \ | |
1638 | } \ | |
1639 | } while (0) | |
1640 | ||
1641 | /* TLS support defaulting to original Sun flavor. GNU extensions | |
1642 | must be activated in separate configuration files. */ | |
1643 | #ifdef HAVE_AS_TLS | |
1644 | #define TARGET_TLS 1 | |
1645 | #else | |
1646 | #define TARGET_TLS 0 | |
1647 | #endif | |
1648 | ||
1649 | #define TARGET_SUN_TLS TARGET_TLS | |
1650 | #define TARGET_GNU_TLS 0 | |
1651 | ||
1652 | #ifdef HAVE_AS_FMAF_HPC_VIS3 | |
1653 | #define AS_NIAGARA3_FLAG "d" | |
1654 | #else | |
1655 | #define AS_NIAGARA3_FLAG "b" | |
1656 | #endif | |
1657 | ||
1658 | #ifdef HAVE_AS_SPARC4 | |
1659 | #define AS_NIAGARA4_FLAG "-xarch=sparc4" | |
1660 | #else | |
1661 | #define AS_NIAGARA4_FLAG "-Av9" AS_NIAGARA3_FLAG | |
1662 | #endif | |
1663 | ||
1664 | #ifdef HAVE_AS_SPARC5_VIS4 | |
1665 | #define AS_NIAGARA7_FLAG "-xarch=sparc5" | |
1666 | #else | |
1667 | #define AS_NIAGARA7_FLAG AS_NIAGARA4_FLAG | |
1668 | #endif | |
1669 | ||
1670 | #ifdef HAVE_AS_SPARC6 | |
1671 | #define AS_M8_FLAG "-xarch=sparc6" | |
1672 | #else | |
1673 | #define AS_M8_FLAG AS_NIAGARA7_FLAG | |
1674 | #endif | |
1675 | ||
1676 | #ifdef HAVE_AS_LEON | |
1677 | #define AS_LEON_FLAG "-Aleon" | |
1678 | #define AS_LEONV7_FLAG "-Aleon" | |
1679 | #else | |
1680 | #define AS_LEON_FLAG "-Av8" | |
1681 | #define AS_LEONV7_FLAG "-Av7" | |
1682 | #endif | |
1683 | ||
1684 | /* We use gcc _mcount for profiling. */ | |
1685 | #define NO_PROFILE_COUNTERS 0 | |
1686 | ||
1687 | /* Debug support */ | |
1688 | #define MASK_DEBUG_OPTIONS 0x01 /* debug option handling */ | |
1689 | #define MASK_DEBUG_ALL MASK_DEBUG_OPTIONS | |
1690 | ||
1691 | #define TARGET_DEBUG_OPTIONS (sparc_debug & MASK_DEBUG_OPTIONS) | |
1692 | ||
1693 | /* By default, use the weakest memory model for the cpu. */ | |
1694 | #ifndef SUBTARGET_DEFAULT_MEMORY_MODEL | |
1695 | #define SUBTARGET_DEFAULT_MEMORY_MODEL SMM_DEFAULT | |
1696 | #endif | |
1697 | ||
1698 | /* Define this to 1 if the FE_EXCEPT values defined in fenv.h start at 1. */ | |
1699 | #define SPARC_LOW_FE_EXCEPT_VALUES 0 | |
1700 | ||
1701 | #define TARGET_SUPPORTS_WIDE_INT 1 | |
1702 | ||
1703 | /* Define this to 1 to accept ABI changes to match the vendor compiler. */ | |
1704 | #define SUN_V9_ABI_COMPATIBILITY 0 |