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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 | ||
8747dd6e TS |
36 | /* Avoid the default in ../../gcc.c, which adds "-pthread", which is not |
37 | supported for nvptx. */ | |
38 | #define GOMP_SELF_SPECS "" | |
39 | ||
738f2522 BS |
40 | /* Storage Layout. */ |
41 | ||
42 | #define BITS_BIG_ENDIAN 0 | |
43 | #define BYTES_BIG_ENDIAN 0 | |
44 | #define WORDS_BIG_ENDIAN 0 | |
45 | ||
46 | /* Chosen such that we won't have to deal with multi-word subregs. */ | |
47 | #define UNITS_PER_WORD 8 | |
48 | ||
49 | #define PARM_BOUNDARY 8 | |
50 | #define STACK_BOUNDARY 64 | |
51 | #define FUNCTION_BOUNDARY 32 | |
52 | #define BIGGEST_ALIGNMENT 64 | |
53 | #define STRICT_ALIGNMENT 1 | |
54 | ||
55 | /* Copied from elf.h and other places. We'd otherwise use | |
56 | BIGGEST_ALIGNMENT and fail a number of testcases. */ | |
57 | #define MAX_OFILE_ALIGNMENT (32768 * 8) | |
58 | ||
59 | /* Type Layout. */ | |
60 | ||
61 | #define DEFAULT_SIGNED_CHAR 1 | |
62 | ||
63 | #define SHORT_TYPE_SIZE 16 | |
64 | #define INT_TYPE_SIZE 32 | |
65 | #define LONG_TYPE_SIZE (TARGET_ABI64 ? 64 : 32) | |
66 | #define LONG_LONG_TYPE_SIZE 64 | |
67 | #define FLOAT_TYPE_SIZE 32 | |
68 | #define DOUBLE_TYPE_SIZE 64 | |
69 | #define LONG_DOUBLE_TYPE_SIZE 64 | |
70 | ||
71 | #undef SIZE_TYPE | |
72 | #define SIZE_TYPE (TARGET_ABI64 ? "long unsigned int" : "unsigned int") | |
73 | #undef PTRDIFF_TYPE | |
74 | #define PTRDIFF_TYPE (TARGET_ABI64 ? "long int" : "int") | |
75 | ||
76 | #define POINTER_SIZE (TARGET_ABI64 ? 64 : 32) | |
77 | ||
78 | #define Pmode (TARGET_ABI64 ? DImode : SImode) | |
79 | ||
80 | /* Registers. Since ptx is a virtual target, we just define a few | |
81 | hard registers for special purposes and leave pseudos unallocated. */ | |
82 | ||
83 | #define FIRST_PSEUDO_REGISTER 16 | |
84 | #define FIXED_REGISTERS \ | |
85 | { 1, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 1 } | |
86 | #define CALL_USED_REGISTERS \ | |
87 | { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1 } | |
88 | ||
89 | #define HARD_REGNO_NREGS(regno, mode) 1 | |
90 | #define CANNOT_CHANGE_MODE_CLASS(M1, M2, CLS) ((CLS) == RETURN_REG) | |
91 | #define HARD_REGNO_MODE_OK(REG, MODE) nvptx_hard_regno_mode_ok (REG, MODE) | |
92 | ||
93 | /* Register Classes. */ | |
94 | ||
95 | enum reg_class | |
96 | { | |
97 | NO_REGS, | |
98 | RETURN_REG, | |
99 | ALL_REGS, | |
100 | LIM_REG_CLASSES | |
101 | }; | |
102 | ||
103 | #define N_REG_CLASSES (int) LIM_REG_CLASSES | |
104 | ||
105 | #define REG_CLASS_NAMES { \ | |
106 | "RETURN_REG", \ | |
107 | "NO_REGS", \ | |
108 | "ALL_REGS" } | |
109 | ||
110 | #define REG_CLASS_CONTENTS \ | |
111 | { \ | |
112 | /* NO_REGS. */ \ | |
113 | { 0x0000 }, \ | |
114 | /* RETURN_REG. */ \ | |
115 | { 0x0008 }, \ | |
116 | /* ALL_REGS. */ \ | |
117 | { 0xFFFF }, \ | |
118 | } | |
119 | ||
120 | #define GENERAL_REGS ALL_REGS | |
121 | ||
122 | #define REGNO_REG_CLASS(R) ((R) == 4 ? RETURN_REG : ALL_REGS) | |
123 | ||
124 | #define BASE_REG_CLASS ALL_REGS | |
125 | #define INDEX_REG_CLASS NO_REGS | |
126 | ||
127 | #define REGNO_OK_FOR_BASE_P(X) true | |
128 | #define REGNO_OK_FOR_INDEX_P(X) false | |
129 | ||
130 | #define CLASS_MAX_NREGS(class, mode) \ | |
131 | ((GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) | |
132 | ||
133 | #define MODES_TIEABLE_P(M1, M2) false | |
134 | ||
135 | #define PROMOTE_MODE(MODE, UNSIGNEDP, TYPE) \ | |
136 | if (GET_MODE_CLASS (MODE) == MODE_INT \ | |
137 | && GET_MODE_SIZE (MODE) < GET_MODE_SIZE (SImode)) \ | |
138 | { \ | |
139 | (MODE) = SImode; \ | |
140 | } | |
141 | ||
142 | /* Address spaces. */ | |
143 | #define ADDR_SPACE_GLOBAL 1 | |
144 | #define ADDR_SPACE_SHARED 3 | |
145 | #define ADDR_SPACE_CONST 4 | |
146 | #define ADDR_SPACE_LOCAL 5 | |
147 | #define ADDR_SPACE_PARAM 101 | |
148 | ||
149 | /* Stack and Calling. */ | |
150 | ||
151 | #define STARTING_FRAME_OFFSET 0 | |
152 | #define FRAME_GROWS_DOWNWARD 0 | |
153 | #define STACK_GROWS_DOWNWARD | |
154 | ||
155 | #define STACK_POINTER_REGNUM 1 | |
156 | #define HARD_FRAME_POINTER_REGNUM 2 | |
157 | #define NVPTX_PUNNING_BUFFER_REGNUM 3 | |
158 | #define NVPTX_RETURN_REGNUM 4 | |
159 | #define FRAME_POINTER_REGNUM 15 | |
160 | #define ARG_POINTER_REGNUM 14 | |
161 | #define RETURN_ADDR_REGNO 13 | |
162 | ||
163 | #define STATIC_CHAIN_REGNUM 12 | |
164 | #define OUTGOING_ARG_POINTER_REGNUM 11 | |
165 | #define OUTGOING_STATIC_CHAIN_REGNUM 10 | |
166 | ||
167 | #define FIRST_PARM_OFFSET(FNDECL) 0 | |
168 | #define PUSH_ARGS_REVERSED 1 | |
169 | ||
170 | #define ACCUMULATE_OUTGOING_ARGS 1 | |
171 | ||
172 | #ifdef HOST_WIDE_INT | |
173 | struct nvptx_args { | |
174 | union tree_node *fntype; | |
175 | /* Number of arguments passed in registers so far. */ | |
176 | int count; | |
177 | /* Offset into the stdarg area so far. */ | |
178 | HOST_WIDE_INT off; | |
179 | }; | |
180 | #endif | |
181 | ||
182 | #define CUMULATIVE_ARGS struct nvptx_args | |
183 | ||
184 | #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \ | |
185 | do { (CUM).fntype = (FNTYPE); (CUM).count = 0; (CUM).off = 0; } while (0) | |
186 | ||
187 | #define FUNCTION_ARG_REGNO_P(r) 0 | |
188 | ||
189 | #define DEFAULT_PCC_STRUCT_RETURN 0 | |
190 | ||
191 | #define FUNCTION_PROFILER(file, labelno) \ | |
40fecdd6 JM |
192 | fatal_error (input_location, \ |
193 | "profiling is not yet implemented for this architecture") | |
738f2522 BS |
194 | |
195 | #define TRAMPOLINE_SIZE 32 | |
196 | #define TRAMPOLINE_ALIGNMENT 256 | |
197 | \f | |
198 | /* We don't run reload, so this isn't actually used, but it still needs to be | |
199 | defined. Showing an argp->fp elimination also stops | |
200 | expand_builtin_setjmp_receiver from generating invalid insns. */ | |
201 | #define ELIMINABLE_REGS \ | |
202 | { \ | |
203 | { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \ | |
204 | { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM} \ | |
205 | } | |
206 | ||
207 | /* Define the offset between two registers, one to be eliminated, and the other | |
208 | its replacement, at the start of a routine. */ | |
209 | ||
210 | #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \ | |
211 | ((OFFSET) = 0) | |
212 | \f | |
213 | /* Addressing Modes. */ | |
214 | ||
215 | #define MAX_REGS_PER_ADDRESS 1 | |
216 | ||
217 | #define LEGITIMATE_PIC_OPERAND_P(X) 1 | |
218 | \f | |
219 | ||
220 | struct nvptx_pseudo_info | |
221 | { | |
222 | int true_size; | |
223 | int renumber; | |
224 | }; | |
225 | ||
226 | #if defined HOST_WIDE_INT | |
227 | struct GTY(()) machine_function | |
228 | { | |
229 | rtx_expr_list *call_args; | |
230 | rtx start_call; | |
231 | tree funtype; | |
232 | bool has_call_with_varargs; | |
233 | bool has_call_with_sc; | |
234 | struct GTY((skip)) nvptx_pseudo_info *pseudos; | |
235 | HOST_WIDE_INT outgoing_stdarg_size; | |
236 | int ret_reg_mode; | |
237 | int punning_buffer_size; | |
238 | }; | |
239 | #endif | |
240 | \f | |
241 | /* Costs. */ | |
242 | ||
243 | #define NO_FUNCTION_CSE 1 | |
244 | #define SLOW_BYTE_ACCESS 0 | |
245 | #define BRANCH_COST(speed_p, predictable_p) 6 | |
246 | \f | |
247 | /* Assembler Format. */ | |
248 | ||
249 | #undef ASM_DECLARE_FUNCTION_NAME | |
250 | #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \ | |
251 | nvptx_declare_function_name (FILE, NAME, DECL) | |
252 | ||
253 | #undef ASM_DECLARE_FUNCTION_SIZE | |
254 | #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \ | |
255 | nvptx_function_end (STREAM) | |
256 | ||
257 | #define DWARF2_ASM_LINE_DEBUG_INFO 1 | |
258 | ||
259 | #undef ASM_APP_ON | |
260 | #define ASM_APP_ON "\t// #APP \n" | |
261 | #undef ASM_APP_OFF | |
262 | #define ASM_APP_OFF "\t// #NO_APP \n" | |
263 | ||
264 | #define ASM_OUTPUT_COMMON(stream, name, size, rounded) | |
265 | #define ASM_OUTPUT_LOCAL(stream, name, size, rounded) | |
266 | ||
267 | #define REGISTER_NAMES \ | |
268 | { \ | |
269 | "%hr0", "%outargs", "%hfp", "%punbuffer", "%retval", "%retval_in", "%hr6", "%hr7", \ | |
270 | "%hr8", "%hr9", "%hr10", "%hr11", "%hr12", "%hr13", "%argp", "%frame" \ | |
271 | } | |
272 | ||
273 | #define DBX_REGISTER_NUMBER(N) N | |
274 | ||
275 | #define TEXT_SECTION_ASM_OP "" | |
276 | #define DATA_SECTION_ASM_OP "" | |
277 | ||
278 | #undef ASM_GENERATE_INTERNAL_LABEL | |
279 | #define ASM_GENERATE_INTERNAL_LABEL(LABEL, PREFIX, NUM) \ | |
280 | do \ | |
281 | { \ | |
282 | char *__p; \ | |
283 | __p = stpcpy (&(LABEL)[1], PREFIX); \ | |
284 | (LABEL)[0] = '$'; \ | |
285 | sprint_ul (__p, (unsigned long) (NUM)); \ | |
286 | } \ | |
287 | while (0) | |
288 | ||
e0dd6391 TS |
289 | #define ASM_OUTPUT_ALIGN(FILE, POWER) \ |
290 | do \ | |
291 | { \ | |
292 | (void) (FILE); \ | |
293 | (void) (POWER); \ | |
294 | } \ | |
295 | while (0) | |
296 | ||
738f2522 BS |
297 | #define ASM_OUTPUT_SKIP(FILE, N) \ |
298 | nvptx_output_skip (FILE, N) | |
e0dd6391 | 299 | |
738f2522 BS |
300 | #undef ASM_OUTPUT_ASCII |
301 | #define ASM_OUTPUT_ASCII(FILE, STR, LENGTH) \ | |
302 | nvptx_output_ascii (FILE, STR, LENGTH); | |
303 | ||
304 | #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \ | |
305 | nvptx_declare_object_name (FILE, NAME, DECL) | |
306 | ||
307 | #undef ASM_OUTPUT_ALIGNED_DECL_COMMON | |
308 | #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \ | |
309 | do \ | |
310 | { \ | |
311 | fprintf (FILE, "// BEGIN%s VAR DEF: ", \ | |
312 | TREE_PUBLIC (DECL) ? " GLOBAL" : ""); \ | |
313 | assemble_name_raw (FILE, NAME); \ | |
314 | fputc ('\n', FILE); \ | |
315 | const char *sec = nvptx_section_for_decl (DECL); \ | |
316 | fprintf (FILE, ".visible%s.align %d .b8 ", sec, \ | |
317 | (ALIGN) / BITS_PER_UNIT); \ | |
318 | assemble_name ((FILE), (NAME)); \ | |
319 | if ((SIZE) > 0) \ | |
16998094 | 320 | fprintf (FILE, "[" HOST_WIDE_INT_PRINT_DEC"]", (SIZE)); \ |
738f2522 BS |
321 | fprintf (FILE, ";\n"); \ |
322 | } \ | |
323 | while (0) | |
324 | ||
325 | #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL | |
326 | #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \ | |
327 | do \ | |
328 | { \ | |
329 | fprintf (FILE, "// BEGIN VAR DEF: "); \ | |
330 | assemble_name_raw (FILE, NAME); \ | |
331 | fputc ('\n', FILE); \ | |
332 | const char *sec = nvptx_section_for_decl (DECL); \ | |
333 | fprintf (FILE, ".visible%s.align %d .b8 ", sec, \ | |
334 | (ALIGN) / BITS_PER_UNIT); \ | |
335 | assemble_name ((FILE), (NAME)); \ | |
336 | if ((SIZE) > 0) \ | |
16998094 | 337 | fprintf (FILE, "[" HOST_WIDE_INT_PRINT_DEC"]", (SIZE)); \ |
738f2522 BS |
338 | fprintf (FILE, ";\n"); \ |
339 | } \ | |
340 | while (0) | |
341 | ||
342 | #define CASE_VECTOR_PC_RELATIVE flag_pic | |
343 | #define JUMP_TABLES_IN_TEXT_SECTION flag_pic | |
344 | ||
345 | #define ADDR_VEC_ALIGN(VEC) (JUMP_TABLES_IN_TEXT_SECTION ? 5 : 2) | |
346 | ||
347 | /* Misc. */ | |
348 | ||
349 | #define DWARF2_DEBUGGING_INFO 1 | |
350 | ||
351 | #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \ | |
352 | ((VALUE) = GET_MODE_BITSIZE ((MODE)), 2) | |
353 | #define CTZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) \ | |
354 | ((VALUE) = GET_MODE_BITSIZE ((MODE)), 2) | |
355 | ||
356 | #define NO_DOT_IN_LABEL | |
357 | #define ASM_COMMENT_START "//" | |
358 | ||
359 | #define STORE_FLAG_VALUE -1 | |
360 | #define FLOAT_STORE_FLAG_VALUE(MODE) REAL_VALUE_ATOF("1.0", (MODE)) | |
361 | ||
362 | #define CASE_VECTOR_MODE SImode | |
363 | #define MOVE_MAX 4 | |
364 | #define MOVE_RATIO(SPEED) 4 | |
365 | #define TRULY_NOOP_TRUNCATION(outprec, inprec) 1 | |
366 | #define FUNCTION_MODE QImode | |
367 | #define HAS_INIT_SECTION 1 | |
368 | ||
d94fae04 TS |
369 | /* The C++ front end insists to link against libstdc++ -- which we don't build. |
370 | Tell it to instead link against the innocuous libgcc. */ | |
371 | #define LIBSTDCXX "gcc" | |
372 | ||
738f2522 | 373 | #endif /* GCC_NVPTX_H */ |