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738f2522 | 1 | /* Target Definitions for NVPTX. |
5624e564 | 2 | Copyright (C) 2014-2015 Free Software Foundation, Inc. |
738f2522 BS |
3 | Contributed by Bernd Schmidt <bernds@codesourcery.com> |
4 | ||
5 | This file is part of GCC. | |
6 | ||
7 | GCC is free software; you can redistribute it and/or modify it | |
8 | under the terms of the GNU General Public License as published | |
9 | by the Free Software Foundation; either version 3, or (at your | |
10 | option) any later version. | |
11 | ||
12 | GCC is distributed in the hope that it will be useful, but WITHOUT | |
13 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY | |
14 | or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public | |
15 | License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with GCC; see the file COPYING3. If not see | |
19 | <http://www.gnu.org/licenses/>. */ | |
20 | ||
21 | #ifndef GCC_NVPTX_H | |
22 | #define GCC_NVPTX_H | |
23 | ||
24 | /* Run-time Target. */ | |
25 | ||
26 | #define STARTFILE_SPEC "%{mmainkernel:crt0.o}" | |
27 | ||
28 | #define TARGET_CPU_CPP_BUILTINS() \ | |
29 | do \ | |
30 | { \ | |
31 | builtin_assert ("machine=nvptx"); \ | |
32 | builtin_assert ("cpu=nvptx"); \ | |
33 | builtin_define ("__nvptx__"); \ | |
34 | } while (0) | |
35 | ||
36 | /* Storage Layout. */ | |
37 | ||
38 | #define BITS_BIG_ENDIAN 0 | |
39 | #define BYTES_BIG_ENDIAN 0 | |
40 | #define WORDS_BIG_ENDIAN 0 | |
41 | ||
42 | /* Chosen such that we won't have to deal with multi-word subregs. */ | |
43 | #define UNITS_PER_WORD 8 | |
44 | ||
45 | #define PARM_BOUNDARY 8 | |
46 | #define STACK_BOUNDARY 64 | |
47 | #define FUNCTION_BOUNDARY 32 | |
48 | #define BIGGEST_ALIGNMENT 64 | |
49 | #define STRICT_ALIGNMENT 1 | |
50 | ||
51 | /* Copied from elf.h and other places. We'd otherwise use | |
52 | BIGGEST_ALIGNMENT and fail a number of testcases. */ | |
53 | #define MAX_OFILE_ALIGNMENT (32768 * 8) | |
54 | ||
55 | /* Type Layout. */ | |
56 | ||
57 | #define DEFAULT_SIGNED_CHAR 1 | |
58 | ||
59 | #define SHORT_TYPE_SIZE 16 | |
60 | #define INT_TYPE_SIZE 32 | |
61 | #define LONG_TYPE_SIZE (TARGET_ABI64 ? 64 : 32) | |
62 | #define LONG_LONG_TYPE_SIZE 64 | |
63 | #define FLOAT_TYPE_SIZE 32 | |
64 | #define DOUBLE_TYPE_SIZE 64 | |
65 | #define LONG_DOUBLE_TYPE_SIZE 64 | |
66 | ||
67 | #undef SIZE_TYPE | |
68 | #define SIZE_TYPE (TARGET_ABI64 ? "long unsigned int" : "unsigned int") | |
69 | #undef PTRDIFF_TYPE | |
70 | #define PTRDIFF_TYPE (TARGET_ABI64 ? "long int" : "int") | |
71 | ||
72 | #define POINTER_SIZE (TARGET_ABI64 ? 64 : 32) | |
73 | ||
74 | #define Pmode (TARGET_ABI64 ? DImode : SImode) | |
75 | ||
76 | /* Registers. Since ptx is a virtual target, we just define a few | |
77 | hard registers for special purposes and leave pseudos unallocated. */ | |
78 | ||
79 | #define FIRST_PSEUDO_REGISTER 16 | |
80 | #define FIXED_REGISTERS \ | |
81 | { 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1 } | |
82 | #define CALL_USED_REGISTERS \ | |
83 | { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 } | |
84 | ||
85 | #define HARD_REGNO_NREGS(regno, mode) 1 | |
86 | #define CANNOT_CHANGE_MODE_CLASS(M1, M2, CLS) ((CLS) == RETURN_REG) | |
87 | #define HARD_REGNO_MODE_OK(REG, MODE) nvptx_hard_regno_mode_ok (REG, MODE) | |
88 | ||
89 | /* Register Classes. */ | |
90 | ||
91 | enum reg_class | |
92 | { | |
93 | NO_REGS, | |
94 | RETURN_REG, | |
95 | ALL_REGS, | |
96 | LIM_REG_CLASSES | |
97 | }; | |
98 | ||
99 | #define N_REG_CLASSES (int) LIM_REG_CLASSES | |
100 | ||
101 | #define REG_CLASS_NAMES { \ | |
102 | "RETURN_REG", \ | |
103 | "NO_REGS", \ | |
104 | "ALL_REGS" } | |
105 | ||
106 | #define REG_CLASS_CONTENTS \ | |
107 | { \ | |
108 | /* NO_REGS. */ \ | |
109 | { 0x0000 }, \ | |
110 | /* RETURN_REG. */ \ | |
111 | { 0x0008 }, \ | |
112 | /* ALL_REGS. */ \ | |
113 | { 0xFFFF }, \ | |
114 | } | |
115 | ||
116 | #define GENERAL_REGS ALL_REGS | |
117 | ||
118 | #define REGNO_REG_CLASS(R) ((R) == 4 ? RETURN_REG : ALL_REGS) | |
119 | ||
120 | #define BASE_REG_CLASS ALL_REGS | |
121 | #define INDEX_REG_CLASS NO_REGS | |
122 | ||
123 | #define REGNO_OK_FOR_BASE_P(X) true | |
124 | #define REGNO_OK_FOR_INDEX_P(X) false | |
125 | ||
126 | #define CLASS_MAX_NREGS(class, mode) \ | |
127 | ((GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) | |
128 | ||
129 | #define MODES_TIEABLE_P(M1, M2) false | |
130 | ||
131 | #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \ | |
132 | if (GET_MODE_CLASS (MODE) == MODE_INT \ | |
133 | && GET_MODE_SIZE (MODE) < GET_MODE_SIZE (SImode)) \ | |
134 | { \ | |
135 | (MODE) = SImode; \ | |
136 | } | |
137 | ||
138 | /* Address spaces. */ | |
139 | #define ADDR_SPACE_GLOBAL 1 | |
140 | #define ADDR_SPACE_SHARED 3 | |
141 | #define ADDR_SPACE_CONST 4 | |
142 | #define ADDR_SPACE_LOCAL 5 | |
143 | #define ADDR_SPACE_PARAM 101 | |
144 | ||
145 | /* Stack and Calling. */ | |
146 | ||
147 | #define STARTING_FRAME_OFFSET 0 | |
148 | #define FRAME_GROWS_DOWNWARD 0 | |
149 | #define STACK_GROWS_DOWNWARD | |
150 | ||
151 | #define STACK_POINTER_REGNUM 1 | |
152 | #define HARD_FRAME_POINTER_REGNUM 2 | |
153 | #define NVPTX_PUNNING_BUFFER_REGNUM 3 | |
154 | #define NVPTX_RETURN_REGNUM 4 | |
155 | #define FRAME_POINTER_REGNUM 15 | |
156 | #define ARG_POINTER_REGNUM 14 | |
157 | #define RETURN_ADDR_REGNO 13 | |
158 | ||
159 | #define STATIC_CHAIN_REGNUM 12 | |
160 | #define OUTGOING_ARG_POINTER_REGNUM 11 | |
161 | #define OUTGOING_STATIC_CHAIN_REGNUM 10 | |
162 | ||
163 | #define FIRST_PARM_OFFSET(FNDECL) 0 | |
164 | #define PUSH_ARGS_REVERSED 1 | |
165 | ||
166 | #define ACCUMULATE_OUTGOING_ARGS 1 | |
167 | ||
168 | #ifdef HOST_WIDE_INT | |
169 | struct nvptx_args { | |
170 | union tree_node *fntype; | |
171 | /* Number of arguments passed in registers so far. */ | |
172 | int count; | |
173 | /* Offset into the stdarg area so far. */ | |
174 | HOST_WIDE_INT off; | |
175 | }; | |
176 | #endif | |
177 | ||
178 | #define CUMULATIVE_ARGS struct nvptx_args | |
179 | ||
180 | #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \ | |
181 | do { (CUM).fntype = (FNTYPE); (CUM).count = 0; (CUM).off = 0; } while (0) | |
182 | ||
183 | #define FUNCTION_ARG_REGNO_P(r) 0 | |
184 | ||
185 | #define DEFAULT_PCC_STRUCT_RETURN 0 | |
186 | ||
187 | #define FUNCTION_PROFILER(file, labelno) \ | |
188 | fatal_error ("profiling is not yet implemented for this architecture") | |
189 | ||
190 | #define TRAMPOLINE_SIZE 32 | |
191 | #define TRAMPOLINE_ALIGNMENT 256 | |
192 | \f | |
193 | /* We don't run reload, so this isn't actually used, but it still needs to be | |
194 | defined. Showing an argp->fp elimination also stops | |
195 | expand_builtin_setjmp_receiver from generating invalid insns. */ | |
196 | #define ELIMINABLE_REGS \ | |
197 | { \ | |
198 | { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \ | |
199 | { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM} \ | |
200 | } | |
201 | ||
202 | /* Define the offset between two registers, one to be eliminated, and the other | |
203 | its replacement, at the start of a routine. */ | |
204 | ||
205 | #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ | |
206 | ((OFFSET) = 0) | |
207 | \f | |
208 | /* Addressing Modes. */ | |
209 | ||
210 | #define MAX_REGS_PER_ADDRESS 1 | |
211 | ||
212 | #define LEGITIMATE_PIC_OPERAND_P(X) 1 | |
213 | \f | |
214 | ||
215 | struct nvptx_pseudo_info | |
216 | { | |
217 | int true_size; | |
218 | int renumber; | |
219 | }; | |
220 | ||
221 | #if defined HOST_WIDE_INT | |
222 | struct GTY(()) machine_function | |
223 | { | |
224 | rtx_expr_list *call_args; | |
225 | rtx start_call; | |
226 | tree funtype; | |
227 | bool has_call_with_varargs; | |
228 | bool has_call_with_sc; | |
229 | struct GTY((skip)) nvptx_pseudo_info *pseudos; | |
230 | HOST_WIDE_INT outgoing_stdarg_size; | |
231 | int ret_reg_mode; | |
232 | int punning_buffer_size; | |
233 | }; | |
234 | #endif | |
235 | \f | |
236 | /* Costs. */ | |
237 | ||
238 | #define NO_FUNCTION_CSE 1 | |
239 | #define SLOW_BYTE_ACCESS 0 | |
240 | #define BRANCH_COST(speed_p, predictable_p) 6 | |
241 | \f | |
242 | /* Assembler Format. */ | |
243 | ||
244 | #undef ASM_DECLARE_FUNCTION_NAME | |
245 | #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ | |
246 | nvptx_declare_function_name (FILE, NAME, DECL) | |
247 | ||
248 | #undef ASM_DECLARE_FUNCTION_SIZE | |
249 | #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \ | |
250 | nvptx_function_end (STREAM) | |
251 | ||
252 | #define DWARF2_ASM_LINE_DEBUG_INFO 1 | |
253 | ||
254 | #undef ASM_APP_ON | |
255 | #define ASM_APP_ON "\t// #APP \n" | |
256 | #undef ASM_APP_OFF | |
257 | #define ASM_APP_OFF "\t// #NO_APP \n" | |
258 | ||
259 | #define ASM_OUTPUT_COMMON(stream, name, size, rounded) | |
260 | #define ASM_OUTPUT_LOCAL(stream, name, size, rounded) | |
261 | ||
262 | #define REGISTER_NAMES \ | |
263 | { \ | |
264 | "%hr0", "%outargs", "%hfp", "%punbuffer", "%retval", "%retval_in", "%hr6", "%hr7", \ | |
265 | "%hr8", "%hr9", "%hr10", "%hr11", "%hr12", "%hr13", "%argp", "%frame" \ | |
266 | } | |
267 | ||
268 | #define DBX_REGISTER_NUMBER(N) N | |
269 | ||
270 | #define TEXT_SECTION_ASM_OP "" | |
271 | #define DATA_SECTION_ASM_OP "" | |
272 | ||
273 | #undef ASM_GENERATE_INTERNAL_LABEL | |
274 | #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \ | |
275 | do \ | |
276 | { \ | |
277 | char *__p; \ | |
278 | __p = stpcpy (&(LABEL)[1], PREFIX); \ | |
279 | (LABEL)[0] = '$'; \ | |
280 | sprint_ul (__p, (unsigned long) (NUM)); \ | |
281 | } \ | |
282 | while (0) | |
283 | ||
e0dd6391 TS |
284 | #define ASM_OUTPUT_ALIGN(FILE, POWER) \ |
285 | do \ | |
286 | { \ | |
287 | (void) (FILE); \ | |
288 | (void) (POWER); \ | |
289 | } \ | |
290 | while (0) | |
291 | ||
738f2522 BS |
292 | #define ASM_OUTPUT_SKIP(FILE, N) \ |
293 | nvptx_output_skip (FILE, N) | |
e0dd6391 | 294 | |
738f2522 BS |
295 | #undef ASM_OUTPUT_ASCII |
296 | #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \ | |
297 | nvptx_output_ascii (FILE, STR, LENGTH); | |
298 | ||
299 | #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ | |
300 | nvptx_declare_object_name (FILE, NAME, DECL) | |
301 | ||
302 | #undef ASM_OUTPUT_ALIGNED_DECL_COMMON | |
303 | #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \ | |
304 | do \ | |
305 | { \ | |
306 | fprintf (FILE, "// BEGIN%s VAR DEF: ", \ | |
307 | TREE_PUBLIC (DECL) ? " GLOBAL" : ""); \ | |
308 | assemble_name_raw (FILE, NAME); \ | |
309 | fputc ('\n', FILE); \ | |
310 | const char *sec = nvptx_section_for_decl (DECL); \ | |
311 | fprintf (FILE, ".visible%s.align %d .b8 ", sec, \ | |
312 | (ALIGN) / BITS_PER_UNIT); \ | |
313 | assemble_name ((FILE), (NAME)); \ | |
314 | if ((SIZE) > 0) \ | |
315 | fprintf (FILE, "["HOST_WIDE_INT_PRINT_DEC"]", (SIZE)); \ | |
316 | fprintf (FILE, ";\n"); \ | |
317 | } \ | |
318 | while (0) | |
319 | ||
320 | #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL | |
321 | #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ | |
322 | do \ | |
323 | { \ | |
324 | fprintf (FILE, "// BEGIN VAR DEF: "); \ | |
325 | assemble_name_raw (FILE, NAME); \ | |
326 | fputc ('\n', FILE); \ | |
327 | const char *sec = nvptx_section_for_decl (DECL); \ | |
328 | fprintf (FILE, ".visible%s.align %d .b8 ", sec, \ | |
329 | (ALIGN) / BITS_PER_UNIT); \ | |
330 | assemble_name ((FILE), (NAME)); \ | |
331 | if ((SIZE) > 0) \ | |
332 | fprintf (FILE, "["HOST_WIDE_INT_PRINT_DEC"]", (SIZE)); \ | |
333 | fprintf (FILE, ";\n"); \ | |
334 | } \ | |
335 | while (0) | |
336 | ||
337 | #define CASE_VECTOR_PC_RELATIVE flag_pic | |
338 | #define JUMP_TABLES_IN_TEXT_SECTION flag_pic | |
339 | ||
340 | #define ADDR_VEC_ALIGN(VEC) (JUMP_TABLES_IN_TEXT_SECTION ? 5 : 2) | |
341 | ||
342 | /* Misc. */ | |
343 | ||
344 | #define DWARF2_DEBUGGING_INFO 1 | |
345 | ||
346 | #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \ | |
347 | ((VALUE) = GET_MODE_BITSIZE ((MODE)), 2) | |
348 | #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \ | |
349 | ((VALUE) = GET_MODE_BITSIZE ((MODE)), 2) | |
350 | ||
351 | #define NO_DOT_IN_LABEL | |
352 | #define ASM_COMMENT_START "//" | |
353 | ||
354 | #define STORE_FLAG_VALUE -1 | |
355 | #define FLOAT_STORE_FLAG_VALUE(MODE) REAL_VALUE_ATOF("1.0", (MODE)) | |
356 | ||
357 | #define CASE_VECTOR_MODE SImode | |
358 | #define MOVE_MAX 4 | |
359 | #define MOVE_RATIO(SPEED) 4 | |
360 | #define TRULY_NOOP_TRUNCATION(outprec, inprec) 1 | |
361 | #define FUNCTION_MODE QImode | |
362 | #define HAS_INIT_SECTION 1 | |
363 | ||
364 | #endif /* GCC_NVPTX_H */ |