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[gcc.git] / gcc / config / avr / avr.h
1 /* Definitions of target machine for GNU compiler,
2 for ATMEL AVR at90s8515, ATmega103/103L, ATmega603/603L microcontrollers.
3 Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
4 Free Software Foundation, Inc.
5 Contributed by Denis Chertykov (denisc@overta.ru)
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 2, 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 COPYING. If not, write to
21 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
22 Boston, MA 02110-1301, USA. */
23
24 /* Names to predefine in the preprocessor for this target machine. */
25
26 #define TARGET_CPU_CPP_BUILTINS() \
27 do \
28 { \
29 builtin_define_std ("AVR"); \
30 if (avr_base_arch_macro) \
31 builtin_define (avr_base_arch_macro); \
32 if (avr_extra_arch_macro) \
33 builtin_define (avr_extra_arch_macro); \
34 if (avr_have_movw_lpmx_p) \
35 builtin_define ("__AVR_HAVE_MOVW__"); \
36 if (avr_have_movw_lpmx_p) \
37 builtin_define ("__AVR_HAVE_LPMX__"); \
38 if (avr_asm_only_p) \
39 builtin_define ("__AVR_ASM_ONLY__"); \
40 if (avr_enhanced_p) \
41 builtin_define ("__AVR_ENHANCED__"); \
42 if (avr_mega_p) \
43 builtin_define ("__AVR_MEGA__"); \
44 if (TARGET_NO_INTERRUPTS) \
45 builtin_define ("__NO_INTERRUPTS__"); \
46 } \
47 while (0)
48
49 extern const char *avr_base_arch_macro;
50 extern const char *avr_extra_arch_macro;
51 extern int avr_mega_p;
52 extern int avr_enhanced_p;
53 extern int avr_asm_only_p;
54 extern int avr_have_movw_lpmx_p;
55 #ifndef IN_LIBGCC2
56 extern GTY(()) section *progmem_section;
57 #endif
58
59 #define AVR_MEGA (avr_mega_p && !TARGET_SHORT_CALLS)
60 #define AVR_ENHANCED (avr_enhanced_p)
61 #define AVR_HAVE_MOVW (avr_have_movw_lpmx_p)
62
63 #define TARGET_VERSION fprintf (stderr, " (GNU assembler syntax)");
64
65 #define OVERRIDE_OPTIONS avr_override_options ()
66
67 #define CAN_DEBUG_WITHOUT_FP
68
69 #define BITS_BIG_ENDIAN 0
70 #define BYTES_BIG_ENDIAN 0
71 #define WORDS_BIG_ENDIAN 0
72
73 #ifdef IN_LIBGCC2
74 /* This is to get correct SI and DI modes in libgcc2.c (32 and 64 bits). */
75 #define UNITS_PER_WORD 4
76 #else
77 /* Width of a word, in units (bytes). */
78 #define UNITS_PER_WORD 1
79 #endif
80
81 #define POINTER_SIZE 16
82
83
84 /* Maximum sized of reasonable data type
85 DImode or Dfmode ... */
86 #define MAX_FIXED_MODE_SIZE 32
87
88 #define PARM_BOUNDARY 8
89
90 #define FUNCTION_BOUNDARY 8
91
92 #define EMPTY_FIELD_BOUNDARY 8
93
94 /* No data type wants to be aligned rounder than this. */
95 #define BIGGEST_ALIGNMENT 8
96
97
98 #define STRICT_ALIGNMENT 0
99
100 #define INT_TYPE_SIZE (TARGET_INT8 ? 8 : 16)
101 #define SHORT_TYPE_SIZE (INT_TYPE_SIZE == 8 ? INT_TYPE_SIZE : 16)
102 #define LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 16 : 32)
103 #define LONG_LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 32 : 64)
104 #define FLOAT_TYPE_SIZE 32
105 #define DOUBLE_TYPE_SIZE 32
106 #define LONG_DOUBLE_TYPE_SIZE 32
107
108 #define DEFAULT_SIGNED_CHAR 1
109
110 #define SIZE_TYPE (INT_TYPE_SIZE == 8 ? "long unsigned int" : "unsigned int")
111 #define PTRDIFF_TYPE (INT_TYPE_SIZE == 8 ? "long int" :"int")
112
113 #define WCHAR_TYPE_SIZE 16
114
115 #define FIRST_PSEUDO_REGISTER 36
116
117 #define FIXED_REGISTERS {\
118 1,1,/* r0 r1 */\
119 0,0,/* r2 r3 */\
120 0,0,/* r4 r5 */\
121 0,0,/* r6 r7 */\
122 0,0,/* r8 r9 */\
123 0,0,/* r10 r11 */\
124 0,0,/* r12 r13 */\
125 0,0,/* r14 r15 */\
126 0,0,/* r16 r17 */\
127 0,0,/* r18 r19 */\
128 0,0,/* r20 r21 */\
129 0,0,/* r22 r23 */\
130 0,0,/* r24 r25 */\
131 0,0,/* r26 r27 */\
132 0,0,/* r28 r29 */\
133 0,0,/* r30 r31 */\
134 1,1,/* STACK */\
135 1,1 /* arg pointer */ }
136
137 #define CALL_USED_REGISTERS { \
138 1,1,/* r0 r1 */ \
139 0,0,/* r2 r3 */ \
140 0,0,/* r4 r5 */ \
141 0,0,/* r6 r7 */ \
142 0,0,/* r8 r9 */ \
143 0,0,/* r10 r11 */ \
144 0,0,/* r12 r13 */ \
145 0,0,/* r14 r15 */ \
146 0,0,/* r16 r17 */ \
147 1,1,/* r18 r19 */ \
148 1,1,/* r20 r21 */ \
149 1,1,/* r22 r23 */ \
150 1,1,/* r24 r25 */ \
151 1,1,/* r26 r27 */ \
152 0,0,/* r28 r29 */ \
153 1,1,/* r30 r31 */ \
154 1,1,/* STACK */ \
155 1,1 /* arg pointer */ }
156
157 #define REG_ALLOC_ORDER { \
158 24,25, \
159 18,19, \
160 20,21, \
161 22,23, \
162 30,31, \
163 26,27, \
164 28,29, \
165 17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2, \
166 0,1, \
167 32,33,34,35 \
168 }
169
170 #define ORDER_REGS_FOR_LOCAL_ALLOC order_regs_for_local_alloc ()
171
172
173 #define HARD_REGNO_NREGS(REGNO, MODE) ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
174
175 #define HARD_REGNO_MODE_OK(REGNO, MODE) avr_hard_regno_mode_ok(REGNO, MODE)
176
177 #define MODES_TIEABLE_P(MODE1, MODE2) 1
178
179 enum reg_class {
180 NO_REGS,
181 R0_REG, /* r0 */
182 POINTER_X_REGS, /* r26 - r27 */
183 POINTER_Y_REGS, /* r28 - r29 */
184 POINTER_Z_REGS, /* r30 - r31 */
185 STACK_REG, /* STACK */
186 BASE_POINTER_REGS, /* r28 - r31 */
187 POINTER_REGS, /* r26 - r31 */
188 ADDW_REGS, /* r24 - r31 */
189 SIMPLE_LD_REGS, /* r16 - r23 */
190 LD_REGS, /* r16 - r31 */
191 NO_LD_REGS, /* r0 - r15 */
192 GENERAL_REGS, /* r0 - r31 */
193 ALL_REGS, LIM_REG_CLASSES
194 };
195
196
197 #define N_REG_CLASSES (int)LIM_REG_CLASSES
198
199 #define REG_CLASS_NAMES { \
200 "NO_REGS", \
201 "R0_REG", /* r0 */ \
202 "POINTER_X_REGS", /* r26 - r27 */ \
203 "POINTER_Y_REGS", /* r28 - r29 */ \
204 "POINTER_Z_REGS", /* r30 - r31 */ \
205 "STACK_REG", /* STACK */ \
206 "BASE_POINTER_REGS", /* r28 - r31 */ \
207 "POINTER_REGS", /* r26 - r31 */ \
208 "ADDW_REGS", /* r24 - r31 */ \
209 "SIMPLE_LD_REGS", /* r16 - r23 */ \
210 "LD_REGS", /* r16 - r31 */ \
211 "NO_LD_REGS", /* r0 - r15 */ \
212 "GENERAL_REGS", /* r0 - r31 */ \
213 "ALL_REGS" }
214
215 #define REG_CLASS_CONTENTS { \
216 {0x00000000,0x00000000}, /* NO_REGS */ \
217 {0x00000001,0x00000000}, /* R0_REG */ \
218 {3 << REG_X,0x00000000}, /* POINTER_X_REGS, r26 - r27 */ \
219 {3 << REG_Y,0x00000000}, /* POINTER_Y_REGS, r28 - r29 */ \
220 {3 << REG_Z,0x00000000}, /* POINTER_Z_REGS, r30 - r31 */ \
221 {0x00000000,0x00000003}, /* STACK_REG, STACK */ \
222 {(3 << REG_Y) | (3 << REG_Z), \
223 0x00000000}, /* BASE_POINTER_REGS, r28 - r31 */ \
224 {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z), \
225 0x00000000}, /* POINTER_REGS, r26 - r31 */ \
226 {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z) | (3 << REG_W), \
227 0x00000000}, /* ADDW_REGS, r24 - r31 */ \
228 {0x00ff0000,0x00000000}, /* SIMPLE_LD_REGS r16 - r23 */ \
229 {(3 << REG_X)|(3 << REG_Y)|(3 << REG_Z)|(3 << REG_W)|(0xff << 16), \
230 0x00000000}, /* LD_REGS, r16 - r31 */ \
231 {0x0000ffff,0x00000000}, /* NO_LD_REGS r0 - r15 */ \
232 {0xffffffff,0x00000000}, /* GENERAL_REGS, r0 - r31 */ \
233 {0xffffffff,0x00000003} /* ALL_REGS */ \
234 }
235
236 #define REGNO_REG_CLASS(R) avr_regno_reg_class(R)
237
238 #define BASE_REG_CLASS (reload_completed ? BASE_POINTER_REGS : POINTER_REGS)
239
240 #define INDEX_REG_CLASS NO_REGS
241
242 #define REGNO_OK_FOR_BASE_P(r) (((r) < FIRST_PSEUDO_REGISTER \
243 && ((r) == REG_X \
244 || (r) == REG_Y \
245 || (r) == REG_Z \
246 || (r) == ARG_POINTER_REGNUM)) \
247 || (reg_renumber \
248 && (reg_renumber[r] == REG_X \
249 || reg_renumber[r] == REG_Y \
250 || reg_renumber[r] == REG_Z \
251 || (reg_renumber[r] \
252 == ARG_POINTER_REGNUM))))
253
254 #define REGNO_OK_FOR_INDEX_P(NUM) 0
255
256 #define PREFERRED_RELOAD_CLASS(X, CLASS) preferred_reload_class(X,CLASS)
257
258 #define SMALL_REGISTER_CLASSES 1
259
260 #define CLASS_LIKELY_SPILLED_P(c) class_likely_spilled_p(c)
261
262 #define CLASS_MAX_NREGS(CLASS, MODE) class_max_nregs (CLASS, MODE)
263
264 #define STACK_PUSH_CODE POST_DEC
265
266 #define STACK_GROWS_DOWNWARD
267
268 #define STARTING_FRAME_OFFSET 1
269
270 #define STACK_POINTER_OFFSET 1
271
272 #define FIRST_PARM_OFFSET(FUNDECL) 0
273
274 #define STACK_BOUNDARY 8
275
276 #define STACK_POINTER_REGNUM 32
277
278 #define FRAME_POINTER_REGNUM REG_Y
279
280 #define ARG_POINTER_REGNUM 34
281
282 #define STATIC_CHAIN_REGNUM 2
283
284 #define FRAME_POINTER_REQUIRED frame_pointer_required_p()
285
286 /* Offset from the frame pointer register value to the top of the stack. */
287 #define FRAME_POINTER_CFA_OFFSET(FNDECL) 0
288
289 #define ELIMINABLE_REGS { \
290 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
291 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \
292 ,{FRAME_POINTER_REGNUM+1,STACK_POINTER_REGNUM+1}}
293
294 #define CAN_ELIMINATE(FROM, TO) (((FROM) == ARG_POINTER_REGNUM \
295 && (TO) == FRAME_POINTER_REGNUM) \
296 || (((FROM) == FRAME_POINTER_REGNUM \
297 || (FROM) == FRAME_POINTER_REGNUM+1) \
298 && ! FRAME_POINTER_REQUIRED \
299 ))
300
301 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
302 OFFSET = initial_elimination_offset (FROM, TO)
303
304 #define RETURN_ADDR_RTX(count, x) \
305 gen_rtx_MEM (Pmode, memory_address (Pmode, plus_constant (tem, 1)))
306
307 #define PUSH_ROUNDING(NPUSHED) (NPUSHED)
308
309 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
310
311 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) (function_arg (&(CUM), MODE, TYPE, NAMED))
312
313 typedef struct avr_args {
314 int nregs; /* # registers available for passing */
315 int regno; /* next available register number */
316 } CUMULATIVE_ARGS;
317
318 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
319 init_cumulative_args (&(CUM), FNTYPE, LIBNAME, FNDECL)
320
321 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
322 (function_arg_advance (&CUM, MODE, TYPE, NAMED))
323
324 #define FUNCTION_ARG_REGNO_P(r) function_arg_regno_p(r)
325
326 extern int avr_reg_order[];
327
328 #define RET_REGISTER avr_ret_register ()
329
330 #define FUNCTION_VALUE(VALTYPE, FUNC) avr_function_value (VALTYPE, FUNC)
331
332 #define LIBCALL_VALUE(MODE) avr_libcall_value (MODE)
333
334 #define FUNCTION_VALUE_REGNO_P(N) ((int) (N) == RET_REGISTER)
335
336 #define DEFAULT_PCC_STRUCT_RETURN 0
337
338 #define EPILOGUE_USES(REGNO) 0
339
340 #define HAVE_POST_INCREMENT 1
341 #define HAVE_PRE_DECREMENT 1
342
343 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
344
345 #define MAX_REGS_PER_ADDRESS 1
346
347 #ifdef REG_OK_STRICT
348 # define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
349 { \
350 if (legitimate_address_p (mode, operand, 1)) \
351 goto ADDR; \
352 }
353 # else
354 # define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
355 { \
356 if (legitimate_address_p (mode, operand, 0)) \
357 goto ADDR; \
358 }
359 #endif
360
361 #define REG_OK_FOR_BASE_NOSTRICT_P(X) \
362 (REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X))
363
364 #define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
365
366 #ifdef REG_OK_STRICT
367 # define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X)
368 #else
369 # define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NOSTRICT_P (X)
370 #endif
371
372 #define REG_OK_FOR_INDEX_P(X) 0
373
374 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
375 { \
376 (X) = legitimize_address (X, OLDX, MODE); \
377 if (memory_address_p (MODE, X)) \
378 goto WIN; \
379 }
380
381 #define XEXP_(X,Y) (X)
382 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN) \
383 do { \
384 if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC)) \
385 { \
386 push_reload (XEXP (X,0), XEXP (X,0), &XEXP (X,0), &XEXP (X,0), \
387 POINTER_REGS, GET_MODE (X),GET_MODE (X) , 0, 0, \
388 OPNUM, RELOAD_OTHER); \
389 goto WIN; \
390 } \
391 if (GET_CODE (X) == PLUS \
392 && REG_P (XEXP (X, 0)) \
393 && GET_CODE (XEXP (X, 1)) == CONST_INT \
394 && INTVAL (XEXP (X, 1)) >= 1) \
395 { \
396 int fit = INTVAL (XEXP (X, 1)) <= (64 - GET_MODE_SIZE (MODE)); \
397 if (fit) \
398 { \
399 if (reg_equiv_address[REGNO (XEXP (X, 0))] != 0) \
400 { \
401 int regno = REGNO (XEXP (X, 0)); \
402 rtx mem = make_memloc (X, regno); \
403 push_reload (XEXP (mem,0), NULL, &XEXP (mem,0), NULL, \
404 POINTER_REGS, Pmode, VOIDmode, 0, 0, \
405 1, ADDR_TYPE (TYPE)); \
406 push_reload (mem, NULL_RTX, &XEXP (X, 0), NULL, \
407 BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
408 OPNUM, TYPE); \
409 goto WIN; \
410 } \
411 push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL, \
412 BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
413 OPNUM, TYPE); \
414 goto WIN; \
415 } \
416 else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
417 { \
418 push_reload (X, NULL_RTX, &X, NULL, \
419 POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
420 OPNUM, TYPE); \
421 goto WIN; \
422 } \
423 } \
424 } while(0)
425
426 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
427
428 #define LEGITIMATE_CONSTANT_P(X) 1
429
430 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
431 : (TO) == STACK_REG ? 12 \
432 : 2)
433
434 #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 : \
435 (MODE)==HImode ? 4 : \
436 (MODE)==SImode ? 8 : \
437 (MODE)==SFmode ? 8 : 16)
438
439 #define BRANCH_COST 0
440
441 #define SLOW_BYTE_ACCESS 0
442
443 #define NO_FUNCTION_CSE
444
445 #define TEXT_SECTION_ASM_OP "\t.text"
446
447 #define DATA_SECTION_ASM_OP "\t.data"
448
449 #define BSS_SECTION_ASM_OP "\t.section .bss"
450
451 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
452 There are no shared libraries on this target, and these sections are
453 placed in the read-only program memory, so they are not writable. */
454
455 #undef CTORS_SECTION_ASM_OP
456 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"a\",@progbits"
457
458 #undef DTORS_SECTION_ASM_OP
459 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits"
460
461 #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor
462
463 #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
464
465 #define JUMP_TABLES_IN_TEXT_SECTION 0
466
467 #define ASM_COMMENT_START " ; "
468
469 #define ASM_APP_ON "/* #APP */\n"
470
471 #define ASM_APP_OFF "/* #NOAPP */\n"
472
473 /* Switch into a generic section. */
474 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
475 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
476
477 #define ASM_OUTPUT_ASCII(FILE, P, SIZE) gas_output_ascii (FILE,P,SIZE)
478
479 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C) ((C) == '\n' \
480 || ((C) == '$'))
481
482 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
483 do { \
484 fputs ("\t.comm ", (STREAM)); \
485 assemble_name ((STREAM), (NAME)); \
486 fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE)); \
487 } while (0)
488
489 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED) \
490 asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
491
492 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED) \
493 do { \
494 fputs ("\t.lcomm ", (STREAM)); \
495 assemble_name ((STREAM), (NAME)); \
496 fprintf ((STREAM), ",%d\n", (int)(SIZE)); \
497 } while (0)
498
499 #undef TYPE_ASM_OP
500 #undef SIZE_ASM_OP
501 #undef WEAK_ASM_OP
502 #define TYPE_ASM_OP "\t.type\t"
503 #define SIZE_ASM_OP "\t.size\t"
504 #define WEAK_ASM_OP "\t.weak\t"
505 /* Define the strings used for the special svr4 .type and .size directives.
506 These strings generally do not vary from one system running svr4 to
507 another, but if a given system (e.g. m88k running svr) needs to use
508 different pseudo-op names for these, they may be overridden in the
509 file which includes this one. */
510
511
512 #undef TYPE_OPERAND_FMT
513 #define TYPE_OPERAND_FMT "@%s"
514 /* The following macro defines the format used to output the second
515 operand of the .type assembler directive. Different svr4 assemblers
516 expect various different forms for this operand. The one given here
517 is just a default. You may need to override it in your machine-
518 specific tm.h file (depending upon the particulars of your assembler). */
519
520 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
521 do { \
522 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
523 ASM_OUTPUT_LABEL (FILE, NAME); \
524 } while (0)
525
526 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
527 do { \
528 if (!flag_inhibit_size_directive) \
529 ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \
530 } while (0)
531
532 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
533 do { \
534 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
535 size_directive_output = 0; \
536 if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
537 { \
538 size_directive_output = 1; \
539 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, \
540 int_size_in_bytes (TREE_TYPE (DECL))); \
541 } \
542 ASM_OUTPUT_LABEL(FILE, NAME); \
543 } while (0)
544
545 #undef ASM_FINISH_DECLARE_OBJECT
546 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
547 do { \
548 const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
549 HOST_WIDE_INT size; \
550 if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
551 && ! AT_END && TOP_LEVEL \
552 && DECL_INITIAL (DECL) == error_mark_node \
553 && !size_directive_output) \
554 { \
555 size_directive_output = 1; \
556 size = int_size_in_bytes (TREE_TYPE (DECL)); \
557 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size); \
558 } \
559 } while (0)
560
561
562 #define ESCAPES \
563 "\1\1\1\1\1\1\1\1btn\1fr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
564 \0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
565 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\\\0\0\0\
566 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\
567 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
568 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
569 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
570 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"
571 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
572 ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
573 corresponds to a particular byte value [0..255]. For any
574 given byte value, if the value in the corresponding table
575 position is zero, the given character can be output directly.
576 If the table value is 1, the byte must be output as a \ooo
577 octal escape. If the tables value is anything else, then the
578 byte value should be output as a \ followed by the value
579 in the table. Note that we can use standard UN*X escape
580 sequences for many control characters, but we don't use
581 \a to represent BEL because some svr4 assemblers (e.g. on
582 the i386) don't know about that. Also, we don't use \v
583 since some versions of gas, such as 2.2 did not accept it. */
584
585 #define STRING_LIMIT ((unsigned) 64)
586 #define STRING_ASM_OP "\t.string\t"
587 /* Some svr4 assemblers have a limit on the number of characters which
588 can appear in the operand of a .string directive. If your assembler
589 has such a limitation, you should define STRING_LIMIT to reflect that
590 limit. Note that at least some svr4 assemblers have a limit on the
591 actual number of bytes in the double-quoted string, and that they
592 count each character in an escape sequence as one byte. Thus, an
593 escape sequence like \377 would count as four bytes.
594
595 If your target assembler doesn't support the .string directive, you
596 should define this to zero. */
597
598 /* Globalizing directive for a label. */
599 #define GLOBAL_ASM_OP ".global\t"
600
601 #define SET_ASM_OP "\t.set\t"
602
603 #define ASM_WEAKEN_LABEL(FILE, NAME) \
604 do \
605 { \
606 fputs ("\t.weak\t", (FILE)); \
607 assemble_name ((FILE), (NAME)); \
608 fputc ('\n', (FILE)); \
609 } \
610 while (0)
611
612 #define SUPPORTS_WEAK 1
613
614 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \
615 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
616
617 #define HAS_INIT_SECTION 1
618
619 #define REGISTER_NAMES { \
620 "r0","r1","r2","r3","r4","r5","r6","r7", \
621 "r8","r9","r10","r11","r12","r13","r14","r15", \
622 "r16","r17","r18","r19","r20","r21","r22","r23", \
623 "r24","r25","r26","r27","r28","r29","r30","r31", \
624 "__SPL__","__SPH__","argL","argH"}
625
626 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
627
628 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
629
630 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~')
631
632 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
633
634 #define USER_LABEL_PREFIX ""
635
636 #define ASSEMBLER_DIALECT AVR_HAVE_MOVW
637
638 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO) \
639 { \
640 gcc_assert (REGNO < 32); \
641 fprintf (STREAM, "\tpush\tr%d", REGNO); \
642 }
643
644 #define ASM_OUTPUT_REG_POP(STREAM, REGNO) \
645 { \
646 gcc_assert (REGNO < 32); \
647 fprintf (STREAM, "\tpop\tr%d", REGNO); \
648 }
649
650 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
651 avr_output_addr_vec_elt(STREAM, VALUE)
652
653 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
654 (switch_to_section (progmem_section), \
655 (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
656
657 #define ASM_OUTPUT_SKIP(STREAM, N) \
658 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
659
660 #define ASM_OUTPUT_ALIGN(STREAM, POWER)
661
662 #define CASE_VECTOR_MODE HImode
663
664 extern int avr_case_values_threshold;
665
666 #define CASE_VALUES_THRESHOLD avr_case_values_threshold
667
668 #undef WORD_REGISTER_OPERATIONS
669
670 #define MOVE_MAX 4
671
672 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
673
674 #define Pmode HImode
675
676 #define FUNCTION_MODE HImode
677
678 #define DOLLARS_IN_IDENTIFIERS 0
679
680 #define NO_DOLLAR_IN_LABEL 1
681
682 #define TRAMPOLINE_TEMPLATE(FILE) \
683 internal_error ("trampolines not supported")
684
685 #define TRAMPOLINE_SIZE 4
686
687 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
688 { \
689 emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT); \
690 emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
691 }
692 /* Store in cc_status the expressions
693 that the condition codes will describe
694 after execution of an instruction whose pattern is EXP.
695 Do not alter them if the instruction would not alter the cc's. */
696
697 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
698
699 /* The add insns don't set overflow in a usable way. */
700 #define CC_OVERFLOW_UNUSABLE 01000
701 /* The mov,and,or,xor insns don't set carry. That's ok though as the
702 Z bit is all we need when doing unsigned comparisons on the result of
703 these insns (since they're always with 0). However, conditions.h has
704 CC_NO_OVERFLOW defined for this purpose. Rename it to something more
705 understandable. */
706 #define CC_NO_CARRY CC_NO_OVERFLOW
707
708
709 /* Output assembler code to FILE to increment profiler label # LABELNO
710 for profiling a function entry. */
711
712 #define FUNCTION_PROFILER(FILE, LABELNO) \
713 fprintf (FILE, "/* profiler %d */", (LABELNO))
714
715 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
716 adjust_insn_length (INSN, LENGTH))
717
718 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
719
720 #define CC1_SPEC "%{profile:-p}"
721
722 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
723 %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
724 %{!fexceptions:-fno-exceptions}"
725 /* A C string constant that tells the GCC drvier program options to
726 pass to `cc1plus'. */
727
728 #define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;\
729 mmcu=*:-mmcu=%*}"
730
731 #define LINK_SPEC " %{!mmcu*:-m avr2}\
732 %{mmcu=at90s1200|\
733 mmcu=attiny11|\
734 mmcu=attiny12|\
735 mmcu=attiny15|\
736 mmcu=attiny28:-m avr1}\
737 %{mmcu=attiny22|\
738 mmcu=attiny26|\
739 mmcu=at90s2*|\
740 mmcu=at90s4*|\
741 mmcu=at90s8*|\
742 mmcu=at90c8*|\
743 mmcu=at86rf401|\
744 mmcu=attiny13|\
745 mmcu=attiny2313|\
746 mmcu=attiny24|\
747 mmcu=attiny25|\
748 mmcu=attiny261|\
749 mmcu=attiny4*|\
750 mmcu=attiny8*:-m avr2}\
751 %{mmcu=atmega103|\
752 mmcu=atmega603|\
753 mmcu=at43*|\
754 mmcu=at76*:-m avr3}\
755 %{mmcu=atmega8*|\
756 mmcu=atmega48|\
757 mmcu=at90pwm1|\
758 mmcu=at90pwm2|\
759 mmcu=at90pwm3:-m avr4}\
760 %{mmcu=atmega16*|\
761 mmcu=atmega32*|\
762 mmcu=atmega406|\
763 mmcu=atmega64*|\
764 mmcu=atmega128*|\
765 mmcu=at90can*|\
766 mmcu=at90usb*|\
767 mmcu=at94k:-m avr5}\
768 %{mmcu=atmega324*|\
769 mmcu=atmega325|\
770 mmcu=atmega3250|\
771 mmcu=atmega329|\
772 mmcu=atmega3290|\
773 mmcu=atmega406|\
774 mmcu=atmega48|\
775 mmcu=atmega88|\
776 mmcu=atmega64|\
777 mmcu=atmega644*|\
778 mmcu=atmega645|\
779 mmcu=atmega6450|\
780 mmcu=atmega649|\
781 mmcu=atmega6490|\
782 mmcu=atmega128|\
783 mmcu=atmega162|\
784 mmcu=atmega164*|\
785 mmcu=atmega165*|\
786 mmcu=atmega168|\
787 mmcu=atmega169*|\
788 mmcu=at90can*|\
789 mmcu=at90pwm*|\
790 mmcu=at90usb*: -Tdata 0x800100}\
791 %{mmcu=atmega640|\
792 mmcu=atmega1280|\
793 mmcu=atmega1281: -Tdata 0x800200} "
794
795 #define LIB_SPEC \
796 "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
797
798 #define LIBSTDCXX "-lgcc"
799 /* No libstdc++ for now. Empty string doesn't work. */
800
801 #define LIBGCC_SPEC \
802 "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
803
804 #define STARTFILE_SPEC "%(crt_binutils)"
805
806 #define ENDFILE_SPEC ""
807
808 #define CRT_BINUTILS_SPECS "\
809 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
810 %{mmcu=attiny11:crttn11.o%s} \
811 %{mmcu=attiny12:crttn12.o%s} \
812 %{mmcu=attiny15:crttn15.o%s} \
813 %{mmcu=attiny28:crttn28.o%s} \
814 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
815 %{mmcu=at90s2313:crts2313.o%s} \
816 %{mmcu=at90s2323:crts2323.o%s} \
817 %{mmcu=at90s2333:crts2333.o%s} \
818 %{mmcu=at90s2343:crts2343.o%s} \
819 %{mmcu=attiny22:crttn22.o%s} \
820 %{mmcu=attiny26:crttn26.o%s} \
821 %{mmcu=at90s4433:crts4433.o%s} \
822 %{mmcu=at90s4414:crts4414.o%s} \
823 %{mmcu=at90s4434:crts4434.o%s} \
824 %{mmcu=at90c8534:crtc8534.o%s} \
825 %{mmcu=at90s8535:crts8535.o%s} \
826 %{mmcu=at86rf401:crt86401.o%s} \
827 %{mmcu=attiny13:crttn13.o%s} \
828 %{mmcu=attiny2313|mmcu=avr25:crttn2313.o%s} \
829 %{mmcu=attiny24:crttn24.o%s} \
830 %{mmcu=attiny44:crttn44.o%s} \
831 %{mmcu=attiny84:crttn84.o%s} \
832 %{mmcu=attiny25:crttn25.o%s} \
833 %{mmcu=attiny45:crttn45.o%s} \
834 %{mmcu=attiny85:crttn85.o%s} \
835 %{mmcu=attiny261:crttn261.o%s} \
836 %{mmcu=attiny461:crttn461.o%s} \
837 %{mmcu=attiny861:crttn861.o%s} \
838 %{mmcu=atmega103|mmcu=avr3:crtm103.o%s} \
839 %{mmcu=atmega603:crtm603.o%s} \
840 %{mmcu=at43usb320:crt43320.o%s} \
841 %{mmcu=at43usb355:crt43355.o%s} \
842 %{mmcu=at76c711:crt76711.o%s} \
843 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
844 %{mmcu=atmega48:crtm48.o%s} \
845 %{mmcu=atmega88:crtm88.o%s} \
846 %{mmcu=atmega8515:crtm8515.o%s} \
847 %{mmcu=atmega8535:crtm8535.o%s} \
848 %{mmcu=at90pwm1:crt90pwm1.o%s} \
849 %{mmcu=at90pwm2:crt90pwm2.o%s} \
850 %{mmcu=at90pwm3:crt90pwm3.o%s} \
851 %{mmcu=atmega16:crtm16.o%s} \
852 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
853 %{mmcu=atmega162:crtm162.o%s} \
854 %{mmcu=atmega163:crtm163.o%s} \
855 %{mmcu=atmega164p:crtm164p.o%s} \
856 %{mmcu=atmega165:crtm165.o%s} \
857 %{mmcu=atmega165p:crtm165p.o%s} \
858 %{mmcu=atmega168:crtm168.o%s} \
859 %{mmcu=atmega169:crtm169.o%s} \
860 %{mmcu=atmega169p:crtm169p.o%s} \
861 %{mmcu=atmega32:crtm32.o%s} \
862 %{mmcu=atmega323:crtm323.o%s} \
863 %{mmcu=atmega324p:crtm324p.o%s} \
864 %{mmcu=atmega325:crtm325.o%s} \
865 %{mmcu=atmega3250:crtm3250.o%s} \
866 %{mmcu=atmega329:crtm329.o%s} \
867 %{mmcu=atmega3290:crtm3290.o%s} \
868 %{mmcu=atmega406:crtm406.o%s} \
869 %{mmcu=atmega64:crtm64.o%s} \
870 %{mmcu=atmega640:crtm640.o%s} \
871 %{mmcu=atmega644:crtm644.o%s} \
872 %{mmcu=atmega644p:crtm644p.o%s} \
873 %{mmcu=atmega645:crtm645.o%s} \
874 %{mmcu=atmega6450:crtm6450.o%s} \
875 %{mmcu=atmega649:crtm649.o%s} \
876 %{mmcu=atmega6490:crtm6490.o%s} \
877 %{mmcu=atmega128:crtm128.o%s} \
878 %{mmcu=atmega1280:crtm1280.o%s} \
879 %{mmcu=atmega1281:crtm1281.o%s} \
880 %{mmcu=at90can32:crtcan32.o%s} \
881 %{mmcu=at90can64:crtcan64.o%s} \
882 %{mmcu=at90can128:crtcan128.o%s} \
883 %{mmcu=at90usb646:crtusb646.o%s} \
884 %{mmcu=at90usb647:crtusb647.o%s} \
885 %{mmcu=at90usb1286:crtusb1286.o%s} \
886 %{mmcu=at90usb1287:crtusb1287.o%s} \
887 %{mmcu=at94k:crtat94k.o%s}"
888
889 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
890
891 /* This is the default without any -mmcu=* option (AT90S*). */
892 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
893
894 /* This is undefined macro for collect2 disabling */
895 #define LINKER_NAME "ld"
896
897 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
898 TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
899
900 /* Note that the other files fail to use these
901 in some of the places where they should. */
902
903 #if defined(__STDC__) || defined(ALMOST_STDC)
904 #define AS2(a,b,c) #a " " #b "," #c
905 #define AS2C(b,c) " " #b "," #c
906 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
907 #define AS1(a,b) #a " " #b
908 #else
909 #define AS1(a,b) "a b"
910 #define AS2(a,b,c) "a b,c"
911 #define AS2C(b,c) " b,c"
912 #define AS3(a,b,c,d) "a b,c,d"
913 #endif
914 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
915 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
916 #define CR_TAB "\n\t"
917
918 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
919
920 #define DWARF2_DEBUGGING_INFO 1
921
922 #define OBJECT_FORMAT_ELF