1 /* Target Definitions for TI C6X.
2 Copyright (C) 2010-2023 Free Software Foundation, Inc.
3 Contributed by Andrew Jenner <andrew@codesourcery.com>
4 Contributed by Bernd Schmidt <bernds@codesourcery.com>
5
6 This file is part of GCC.
7
8 GCC is free software; you can redistribute it and/or modify it
9 under the terms of the GNU General Public License as published
10 by the Free Software Foundation; either version 3, or (at your
11 option) any later version.
12
13 GCC is distributed in the hope that it will be useful, but WITHOUT
14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
16 License for more details.
17
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
21
22 #ifndef GCC_C6X_H
23 #define GCC_C6X_H
24
25 /* Feature bit definitions that enable specific insns. */
26 #define C6X_INSNS_C62X 1
27 #define C6X_INSNS_C64X 2
28 #define C6X_INSNS_C64XP 4
29 #define C6X_INSNS_C67X 8
30 #define C6X_INSNS_C67XP 16
31 #define C6X_INSNS_C674X 32
32 #define C6X_INSNS_ATOMIC 64
33 #define C6X_INSNS_ALL_CPU_BITS 127
34
35 #define C6X_DEFAULT_INSN_MASK \
36 (C6X_INSNS_C62X | C6X_INSNS_C64X | C6X_INSNS_C64XP)
37
38 /* A mask of allowed insn types, as defined above. */
39 extern unsigned long c6x_insn_mask;
40
41 /* Value of -march= */
42 extern c6x_cpu_t c6x_arch;
43 #define C6X_DEFAULT_ARCH C6X_CPU_C64XP
44
45 /* True if the target has C64x instructions. */
46 #define TARGET_INSNS_64 ((c6x_insn_mask & C6X_INSNS_C64X) != 0)
47 /* True if the target has C64x+ instructions. */
48 #define TARGET_INSNS_64PLUS ((c6x_insn_mask & C6X_INSNS_C64XP) != 0)
49 /* True if the target has C67x instructions. */
50 #define TARGET_INSNS_67 ((c6x_insn_mask & C6X_INSNS_C67X) != 0)
51 /* True if the target has C67x+ instructions. */
52 #define TARGET_INSNS_67PLUS ((c6x_insn_mask & C6X_INSNS_C67XP) != 0)
53
54 /* True if the target supports doubleword loads. */
55 #define TARGET_LDDW (TARGET_INSNS_64 || TARGET_INSNS_67)
56 /* True if the target supports doubleword loads. */
57 #define TARGET_STDW TARGET_INSNS_64
58 /* True if the target supports the MPY32 family of instructions. */
59 #define TARGET_MPY32 TARGET_INSNS_64PLUS
60 /* True if the target has floating point hardware. */
61 #define TARGET_FP TARGET_INSNS_67
62 /* True if the target has C67x+ floating point extensions. */
63 #define TARGET_FP_EXT TARGET_INSNS_67PLUS
64
65 #define TARGET_DEFAULT 0
66
67 /* Run-time Target. */
68
69 #define TARGET_CPU_CPP_BUILTINS() \
70 do \
71 { \
72 builtin_assert ("machine=tic6x"); \
73 builtin_assert ("cpu=tic6x"); \
74 builtin_define ("__TMS320C6X__"); \
75 builtin_define ("_TMS320C6X"); \
76 \
77 if (TARGET_DSBT) \
78 builtin_define ("__DSBT__"); \
79 \
80 if (TARGET_BIG_ENDIAN) \
81 builtin_define ("_BIG_ENDIAN"); \
82 else \
83 builtin_define ("_LITTLE_ENDIAN"); \
84 \
85 switch (c6x_arch) \
86 { \
87 case unk_isa: \
88 break; \
89 case C6X_CPU_C62X: \
90 builtin_define ("_TMS320C6200"); \
91 break; \
92 \
93 case C6X_CPU_C64XP: \
94 builtin_define ("_TMS320C6400_PLUS"); \
95 /* fall through */ \
96 case C6X_CPU_C64X: \
97 builtin_define ("_TMS320C6400"); \
98 break; \
99 \
100 case C6X_CPU_C67XP: \
101 builtin_define ("_TMS320C6700_PLUS"); \
102 /* fall through */ \
103 case C6X_CPU_C67X: \
104 builtin_define ("_TMS320C6700"); \
105 break; \
106 \
107 case C6X_CPU_C674X: \
108 builtin_define ("_TMS320C6740"); \
109 builtin_define ("_TMS320C6700_PLUS"); \
110 builtin_define ("_TMS320C6700"); \
111 builtin_define ("_TMS320C6400_PLUS"); \
112 builtin_define ("_TMS320C6400"); \
113 break; \
114 } \
115 } while (0)
116
117 #define OPTION_DEFAULT_SPECS \
118 {"arch", "%{!march=*:-march=%(VALUE)}" }
119
120 /* Storage Layout. */
121
122 #define BITS_BIG_ENDIAN 0
123 #define BYTES_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0)
124 #define WORDS_BIG_ENDIAN (TARGET_BIG_ENDIAN != 0)
125
126 #define REG_WORDS_BIG_ENDIAN 0
127
128 #define UNITS_PER_WORD 4
129 #define PARM_BOUNDARY 8
130 #define STACK_BOUNDARY 64
131 #define FUNCTION_BOUNDARY 32
132 #define BIGGEST_ALIGNMENT 64
133 #define STRICT_ALIGNMENT 1
134
135 /* The ABI requires static arrays must be at least 8 byte aligned.
136 Really only externally visible arrays must be aligned this way, as
137 only those are directly visible from another compilation unit. But
138 we don't have that information available here. */
139 #define DATA_ABI_ALIGNMENT(TYPE, ALIGN) \
140 (((ALIGN) < BITS_PER_UNIT * 8 && TREE_CODE (TYPE) == ARRAY_TYPE) \
141 ? BITS_PER_UNIT * 8 : (ALIGN))
142
143 /* Type Layout. */
144
145 #define DEFAULT_SIGNED_CHAR 1
146
147 #undef SIZE_TYPE
148 #define SIZE_TYPE "unsigned int"
149 #undef PTRDIFF_TYPE
150 #define PTRDIFF_TYPE "int"
151
152 /* Registers. */
153
154 #define FIRST_PSEUDO_REGISTER 67
155 #define FIXED_REGISTERS \
156 { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
157 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
158 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, \
159 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, \
160 1, 1, 1}
161 #define CALL_USED_REGISTERS \
162 { 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, \
163 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
164 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 1, 1, \
165 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
166 1, 1, 1}
167
168 /* This lists call-used non-predicate registers first, followed by call-used
169 registers, followed by predicate registers. We want to avoid allocating
170 the predicate registers for other uses as much as possible. */
171 #define REG_ALLOC_ORDER \
172 { \
173 REG_A0, REG_A3, REG_A4, REG_A5, REG_A6, REG_A7, REG_A8, REG_A9, \
174 REG_A16, REG_A17, REG_A18, REG_A19, REG_A20, REG_A21, REG_A22, REG_A23, \
175 REG_A24, REG_A25, REG_A26, REG_A27, REG_A28, REG_A29, REG_A30, REG_A31, \
176 REG_B4, REG_B5, REG_B6, REG_B7, REG_B8, REG_B9, REG_B16, \
177 REG_B17, REG_B18, REG_B19, REG_B20, REG_B21, REG_B22, REG_B23, REG_B24, \
178 REG_B25, REG_B26, REG_B27, REG_B28, REG_B29, REG_B30, REG_B31, \
179 REG_A10, REG_A11, REG_A12, REG_A13, REG_A14, REG_A15, \
180 REG_B3, REG_B10, REG_B11, REG_B12, REG_B13, REG_B14, REG_B15, \
181 REG_A1, REG_A2, REG_B0, REG_B1, REG_B2, REG_ILC \
182 }
183
184 /* Register Classes. */
185
186 enum reg_class
187 {
188 NO_REGS,
189 PREDICATE_A_REGS,
190 PREDICATE_B_REGS,
191 PREDICATE_REGS,
192 PICREG,
193 SPREG,
194 CALL_USED_B_REGS,
195 NONPREDICATE_A_REGS,
196 NONPREDICATE_B_REGS,
197 NONPREDICATE_REGS,
198 A_REGS,
199 B_REGS,
200 GENERAL_REGS,
201 ALL_REGS,
202 LIM_REG_CLASSES
203 };
204
205 #define N_REG_CLASSES (int) LIM_REG_CLASSES
206
207 #define REG_CLASS_NAMES { \
208 "NO_REGS", \
209 "PREDICATE_A_REGS", \
210 "PREDICATE_B_REGS", \
211 "PREDICATE_REGS", \
212 "PICREG", \
213 "SPREG", \
214 "CALL_USED_B_REGS", \
215 "NONPREDICATE_A_REGS", \
216 "NONPREDICATE_B_REGS", \
217 "NONPREDICATE_REGS", \
218 "A_REGS", \
219 "B_REGS", \
220 "GENERAL_REGS", \
221 "ALL_REGS" }
222
223 #define REG_CLASS_CONTENTS \
224 { \
225 /* NO_REGS. */ \
226 { 0x00000000, 0x00000000, 0 }, \
227 /* PREDICATE_A_REGS. */ \
228 { 0x00000006, 0x00000000, 0 }, \
229 /* PREDICATE_B_REGS. */ \
230 { 0x00000000, 0x00000007, 0 }, \
231 /* PREDICATE_REGS. */ \
232 { 0x00000006, 0x00000007, 0 }, \
233 /* PICREG. */ \
234 { 0x00000000, 0x00004000, 0 }, \
235 /* SPREG. */ \
236 { 0x00000000, 0x00008000, 0 }, \
237 /* CALL_USED_B_REGS. */ \
238 { 0x00000000, 0xFFFF03FF, 0 }, \
239 /* NONPREDICATE_A_REGS. */ \
240 { 0xFFFFFFF9, 0x00000000, 0 }, \
241 /* NONPREDICATE_B_REGS. */ \
242 { 0x00000000, 0xFFFFFFF8, 0 }, \
243 /* NONPREDICATE_REGS. */ \
244 { 0xFFFFFFF9, 0xFFFFFFF8, 0 }, \
245 /* A_REGS. */ \
246 { 0xFFFFFFFF, 0x00000000, 3 }, \
247 /* B_REGS. */ \
248 { 0x00000000, 0xFFFFFFFF, 3 }, \
249 /* GENERAL_REGS. */ \
250 { 0xFFFFFFFF, 0xFFFFFFFF, 3 }, \
251 /* ALL_REGS. */ \
252 { 0xFFFFFFFF, 0xFFFFFFFF, 7 }, \
253 }
254
255 #define A_REGNO_P(N) ((N) <= REG_A31)
256 #define B_REGNO_P(N) ((N) >= REG_B0 && (N) <= REG_B31)
257
258 #define A_REG_P(X) (REG_P (X) && A_REGNO_P (REGNO (X)))
259 #define CROSS_OPERANDS(X0,X1) \
260 (A_REG_P (X0) == A_REG_P (X1) ? CROSS_N : CROSS_Y)
261
262 #define REGNO_REG_CLASS(reg) c6x_regno_reg_class (reg)
263
264 #define BASE_REG_CLASS ALL_REGS
265 #define INDEX_REG_CLASS ALL_REGS
266
267 #define REGNO_OK_FOR_BASE_STRICT_P(X) \
268 ((X) < FIRST_PSEUDO_REGISTER \
269 || (reg_renumber[X] >= 0 && reg_renumber[X] < FIRST_PSEUDO_REGISTER))
270 #define REGNO_OK_FOR_BASE_NONSTRICT_P(X) 1
271
272 #define REGNO_OK_FOR_INDEX_STRICT_P(X) \
273 ((X) < FIRST_PSEUDO_REGISTER \
274 || (reg_renumber[X] >= 0 && reg_renumber[X] < FIRST_PSEUDO_REGISTER))
275 #define REGNO_OK_FOR_INDEX_NONSTRICT_P(X) 1
276
277 #ifdef REG_OK_STRICT
278 #define REGNO_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_STRICT_P (X)
279 #define REGNO_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_STRICT_P (X)
280 #else
281 #define REGNO_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_NONSTRICT_P (X)
282 #define REGNO_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_NONSTRICT_P (X)
283 #endif
284
285 #define CLASS_MAX_NREGS(class, mode) \
286 ((GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
287
288 #define REGNO_OK_FOR_INDIRECT_JUMP_P(REGNO, MODE) B_REGNO_P (REGNO)
289
290 /* Stack and Calling. */
291
292 /* SP points to 4 bytes below the first word of the frame. */
293 #define STACK_POINTER_OFFSET 4
294 /* Likewise for AP (which is the incoming stack pointer). */
295 #define FIRST_PARM_OFFSET(fundecl) 4
296 #define FRAME_GROWS_DOWNWARD 1
297 #define STACK_GROWS_DOWNWARD 1
298
299 #define STACK_POINTER_REGNUM REG_B15
300 #define HARD_FRAME_POINTER_REGNUM REG_A15
301 /* These two always get eliminated in favour of the stack pointer
302 or the hard frame pointer. */
303 #define FRAME_POINTER_REGNUM REG_FRAME
304 #define ARG_POINTER_REGNUM REG_ARGP
305
306 #define PIC_OFFSET_TABLE_REGNUM REG_B14
307
308 /* We keep the stack pointer constant rather than using push/pop
309 instructions. */
310 #define ACCUMULATE_OUTGOING_ARGS 1
311
312 /* Before the prologue, the return address is in the B3 register. */
313 #define RETURN_ADDR_REGNO REG_B3
314 #define INCOMING_RETURN_ADDR_RTX gen_rtx_REG (Pmode, RETURN_ADDR_REGNO)
315 #define DWARF_FRAME_RETURN_COLUMN DWARF_FRAME_REGNUM (RETURN_ADDR_REGNO)
316
317 #define RETURN_ADDR_RTX(COUNT, FRAME) c6x_return_addr_rtx (COUNT)
318
319 #define INCOMING_FRAME_SP_OFFSET 0
320 #define ARG_POINTER_CFA_OFFSET(fundecl) 0
321
322 #define STATIC_CHAIN_REGNUM REG_A2
323
324 struct c6x_args {
325 /* Number of arguments to pass in registers. */
326 int nregs;
327 /* Number of arguments passed in registers so far. */
328 int count;
329 };
330
331 #define CUMULATIVE_ARGS struct c6x_args
332
333 #define INIT_CUMULATIVE_ARGS(cum, fntype, libname, fndecl, n_named_args) \
334 c6x_init_cumulative_args (&cum, fntype, libname, n_named_args)
335
336 #define BLOCK_REG_PADDING(MODE, TYPE, FIRST) \
337 (c6x_block_reg_pad_upward (MODE, TYPE, FIRST) ? PAD_UPWARD : PAD_DOWNWARD)
338
339 #define FUNCTION_ARG_REGNO_P(r) \
340 (((r) >= REG_A4 && (r) <= REG_A13) || ((r) >= REG_B4 && (r) <= REG_B13))
341
342 #define DEFAULT_PCC_STRUCT_RETURN 0
343
344 #define FUNCTION_PROFILER(file, labelno) \
345 fatal_error (input_location, \
346 "profiling is not yet implemented for this architecture")
347
348
349 /* Trampolines. */
350 #define TRAMPOLINE_SIZE 32
351 #define TRAMPOLINE_ALIGNMENT 256
352
353 #define ELIMINABLE_REGS \
354 {{ ARG_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
355 { ARG_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}, \
356 { FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}, \
357 { FRAME_POINTER_REGNUM, HARD_FRAME_POINTER_REGNUM}} \
358
359 /* Define the offset between two registers, one to be eliminated, and the other
360 its replacement, at the start of a routine. */
361
362 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
363 ((OFFSET) = c6x_initial_elimination_offset ((FROM), (TO)))
364
365 /* Addressing Modes. */
366
367 #define CONSTANT_ADDRESS_P(x) (CONSTANT_P(x) && GET_CODE(x) != CONST_DOUBLE)
368 #define MAX_REGS_PER_ADDRESS 2
369
370 #define HAVE_PRE_DECREMENT 1
371 #define HAVE_POST_DECREMENT 1
372 #define HAVE_PRE_INCREMENT 1
373 #define HAVE_POST_INCREMENT 1
374
375 /* Register forms are available, but due to scaling we currently don't
376 support them. */
377 #define HAVE_PRE_MODIFY_DISP 1
378 #define HAVE_POST_MODIFY_DISP 1
379
380 #define LEGITIMATE_PIC_OPERAND_P(X) \
381 (!symbolic_operand (X, SImode))
382
383 struct GTY(()) machine_function
384 {
385 /* True if we expanded a sibling call. */
386 int contains_sibcall;
387 };
388
389 /* Costs. */
390 #define NO_FUNCTION_CSE 1
391
392 #define SLOW_BYTE_ACCESS 0
393
394 #define BRANCH_COST(speed_p, predictable_p) 6
395
396
397 /* Model costs for the vectorizer. */
398
399 /* Cost of conditional branch. */
400 #ifndef TARG_COND_BRANCH_COST
401 #define TARG_COND_BRANCH_COST 6
402 #endif
403
404 /* Cost of any scalar operation, excluding load and store. */
405 #ifndef TARG_SCALAR_STMT_COST
406 #define TARG_SCALAR_STMT_COST 1
407 #endif
408
409 /* Cost of scalar load. */
410 #undef TARG_SCALAR_LOAD_COST
411 #define TARG_SCALAR_LOAD_COST 2 /* load + rotate */
412
413 /* Cost of scalar store. */
414 #undef TARG_SCALAR_STORE_COST
415 #define TARG_SCALAR_STORE_COST 10
416
417 /* Cost of any vector operation, excluding load, store,
418 or vector to scalar operation. */
419 #undef TARG_VEC_STMT_COST
420 #define TARG_VEC_STMT_COST 1
421
422 /* Cost of vector to scalar operation. */
423 #undef TARG_VEC_TO_SCALAR_COST
424 #define TARG_VEC_TO_SCALAR_COST 1
425
426 /* Cost of scalar to vector operation. */
427 #undef TARG_SCALAR_TO_VEC_COST
428 #define TARG_SCALAR_TO_VEC_COST 1
429
430 /* Cost of aligned vector load. */
431 #undef TARG_VEC_LOAD_COST
432 #define TARG_VEC_LOAD_COST 1
433
434 /* Cost of misaligned vector load. */
435 #undef TARG_VEC_UNALIGNED_LOAD_COST
436 #define TARG_VEC_UNALIGNED_LOAD_COST 2
437
438 /* Cost of vector store. */
439 #undef TARG_VEC_STORE_COST
440 #define TARG_VEC_STORE_COST 1
441
442 /* Cost of vector permutation. */
443 #ifndef TARG_VEC_PERMUTE_COST
444 #define TARG_VEC_PERMUTE_COST 1
445 #endif
446
447 /* ttype entries (the only interesting data references used) are
448 sb-relative got-indirect (aka .ehtype). */
449 #define ASM_PREFERRED_EH_DATA_FORMAT(code, data) \
450 (((code) == 0 && (data) == 1) ? (DW_EH_PE_datarel | DW_EH_PE_indirect) \
451 : DW_EH_PE_absptr)
452
453 /* This should be the same as the definition in elfos.h, plus the call
454 to output special unwinding directives. */
455 #undef ASM_DECLARE_FUNCTION_NAME
456 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
457 do \
458 { \
459 c6x_output_file_unwind (FILE); \
460 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
461 ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL)); \
462 ASM_OUTPUT_LABEL (FILE, NAME); \
463 } \
464 while (0)
465
466 /* This should be the same as the definition in elfos.h, plus the call
467 to output special unwinding directives. */
468 #undef ASM_DECLARE_FUNCTION_SIZE
469 #define ASM_DECLARE_FUNCTION_SIZE(STREAM, NAME, DECL) \
470 c6x_function_end (STREAM, NAME)
471
472 /* Arbitrarily choose A4/A5. */
473 #define EH_RETURN_DATA_REGNO(N) (((N) < 2) ? (N) + 4 : INVALID_REGNUM)
474
475 /* The register that holds the return address in exception handlers. */
476 #define C6X_EH_STACKADJ_REGNUM 3
477 #define EH_RETURN_STACKADJ_RTX gen_rtx_REG (SImode, C6X_EH_STACKADJ_REGNUM)
478
479
480 /* Assembler Format. */
481
482 #define DWARF2_ASM_LINE_DEBUG_INFO 1
483
484 #undef ASM_APP_ON
485 #define ASM_APP_ON "\t; #APP \n"
486 #undef ASM_APP_OFF
487 #define ASM_APP_OFF "\t; #NO_APP \n"
488
489 #define ASM_OUTPUT_COMMON(stream, name, size, rounded)
490 #define ASM_OUTPUT_LOCAL(stream, name, size, rounded)
491
492 #define GLOBAL_ASM_OP "\t.global\t"
493
494 #define REGISTER_NAMES \
495 { \
496 "A0", "A1", "A2", "A3", "A4", "A5", "A6", "A7", \
497 "A8", "A9", "A10", "A11", "A12", "A13", "A14", "A15", \
498 "A16", "A17", "A18", "A19", "A20", "A21", "A22", "A23", \
499 "A24", "A25", "A26", "A27", "A28", "A29", "A30", "A31", \
500 "B0", "B1", "B2", "B3", "B4", "B5", "B6", "B7", \
501 "B8", "B9", "B10", "B11", "B12", "B13", "B14", "B15", \
502 "B16", "B17", "B18", "B19", "B20", "B21", "B22", "B23", \
503 "B24", "B25", "B26", "B27", "B28", "B29", "B30", "B31", \
504 "FP", "ARGP", "ILC" }
505
506 #define DEBUGGER_REGNO(N) (debugger_register_map[(N)])
507
508 extern unsigned const debugger_register_map[FIRST_PSEUDO_REGISTER];
509
510 #define FINAL_PRESCAN_INSN c6x_final_prescan_insn
511
512 #define TEXT_SECTION_ASM_OP ".text;"
513 #define DATA_SECTION_ASM_OP ".data;"
514
515 #define ASM_OUTPUT_ALIGN(stream, power) \
516 do \
517 { \
518 if (power) \
519 fprintf ((stream), "\t.align\t%d\n", power); \
520 } \
521 while (0)
522
523 #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
524 do { char __buf[256]; \
525 fprintf (FILE, "\t.long\t"); \
526 ASM_GENERATE_INTERNAL_LABEL (__buf, "L", VALUE); \
527 assemble_name (FILE, __buf); \
528 fputc ('\n', FILE); \
529 } while (0)
530
531 /* Determine whether to place EXP (an expression or a decl) should be
532 placed into one of the small data sections. */
533 #define PLACE_IN_SDATA_P(EXP) \
534 (c6x_sdata_mode == C6X_SDATA_NONE ? false \
535 : c6x_sdata_mode == C6X_SDATA_ALL ? true \
536 : !AGGREGATE_TYPE_P (TREE_TYPE (EXP)))
537
538 #define SCOMMON_ASM_OP "\t.scomm\t"
539
540 #undef ASM_OUTPUT_ALIGNED_DECL_COMMON
541 #define ASM_OUTPUT_ALIGNED_DECL_COMMON(FILE, DECL, NAME, SIZE, ALIGN) \
542 do \
543 { \
544 if (DECL != NULL && PLACE_IN_SDATA_P (DECL)) \
545 fprintf ((FILE), "%s", SCOMMON_ASM_OP); \
546 else \
547 fprintf ((FILE), "%s", COMMON_ASM_OP); \
548 assemble_name ((FILE), (NAME)); \
549 fprintf ((FILE), ",%u,%u\n", (int)(SIZE), (ALIGN) / BITS_PER_UNIT);\
550 } \
551 while (0)
552
553 /* This says how to output assembler code to declare an
554 uninitialized internal linkage data object. */
555
556 #undef ASM_OUTPUT_ALIGNED_DECL_LOCAL
557 #define ASM_OUTPUT_ALIGNED_DECL_LOCAL(FILE, DECL, NAME, SIZE, ALIGN) \
558 do { \
559 if (PLACE_IN_SDATA_P (DECL)) \
560 switch_to_section (sbss_section); \
561 else \
562 switch_to_section (bss_section); \
563 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
564 if (!flag_inhibit_size_directive) \
565 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, SIZE); \
566 ASM_OUTPUT_ALIGN ((FILE), exact_log2((ALIGN) / BITS_PER_UNIT)); \
567 ASM_OUTPUT_LABEL(FILE, NAME); \
568 ASM_OUTPUT_SKIP((FILE), (SIZE) ? (SIZE) : 1); \
569 } while (0)
570
571 #define CASE_VECTOR_PC_RELATIVE flag_pic
572 #define JUMP_TABLES_IN_TEXT_SECTION flag_pic
573
574 #define ADDR_VEC_ALIGN(VEC) (JUMP_TABLES_IN_TEXT_SECTION ? 5 : 2)
575
576 /* This is how to output an element of a case-vector that is relative. */
577 #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
578 do { char buf[100]; \
579 fputs ("\t.long ", FILE); \
580 ASM_GENERATE_INTERNAL_LABEL (buf, "L", VALUE); \
581 assemble_name (FILE, buf); \
582 putc ('-', FILE); \
583 ASM_GENERATE_INTERNAL_LABEL (buf, "L", REL); \
584 assemble_name (FILE, buf); \
585 putc ('\n', FILE); \
586 } while (0)
587
588 /* Misc. */
589
590 #define CASE_VECTOR_MODE SImode
591 #define MOVE_MAX 4
592 #define MOVE_RATIO(SPEED) 4
593 #define CLZ_DEFINED_VALUE_AT_ZERO(MODE, VALUE) ((VALUE) = 32, 1)
594 #define Pmode SImode
595 #define FUNCTION_MODE QImode
596
597 #define CPU_UNITS_QUERY 1
598
599 extern int c6x_initial_flag_pic;
600
601 #endif /* GCC_C6X_H */