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
4 Free Software Foundation, Inc.
5 Contributed by Denis Chertykov (denisc@overta.ru)
7 This file is part of GCC.
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)
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.
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. */
24 /* Names to predefine in the preprocessor for this target machine. */
26 #define TARGET_CPU_CPP_BUILTINS() \
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); \
35 builtin_define ("__AVR_ASM_ONLY__"); \
37 builtin_define ("__AVR_ENHANCED__"); \
39 builtin_define ("__AVR_MEGA__"); \
40 if (TARGET_NO_INTERRUPTS) \
41 builtin_define ("__NO_INTERRUPTS__"); \
45 extern const char *avr_base_arch_macro;
46 extern const char *avr_extra_arch_macro;
47 extern int avr_mega_p;
48 extern int avr_enhanced_p;
49 extern int avr_asm_only_p;
50 extern GTY(()) section *progmem_section;
52 #define AVR_MEGA (avr_mega_p && !TARGET_SHORT_CALLS)
53 #define AVR_ENHANCED (avr_enhanced_p)
55 #define TARGET_VERSION fprintf (stderr, " (GNU assembler syntax)");
57 #define OVERRIDE_OPTIONS avr_override_options ()
59 #define CAN_DEBUG_WITHOUT_FP
61 #define BITS_BIG_ENDIAN 0
62 #define BYTES_BIG_ENDIAN 0
63 #define WORDS_BIG_ENDIAN 0
66 /* This is to get correct SI and DI modes in libgcc2.c (32 and 64 bits). */
67 #define UNITS_PER_WORD 4
69 /* Width of a word, in units (bytes). */
70 #define UNITS_PER_WORD 1
73 #define POINTER_SIZE 16
76 /* Maximum sized of reasonable data type
77 DImode or Dfmode ... */
78 #define MAX_FIXED_MODE_SIZE 32
80 #define PARM_BOUNDARY 8
82 #define FUNCTION_BOUNDARY 8
84 #define EMPTY_FIELD_BOUNDARY 8
86 /* No data type wants to be aligned rounder than this. */
87 #define BIGGEST_ALIGNMENT 8
90 #define STRICT_ALIGNMENT 0
92 #define INT_TYPE_SIZE (TARGET_INT8 ? 8 : 16)
93 #define SHORT_TYPE_SIZE (INT_TYPE_SIZE == 8 ? INT_TYPE_SIZE : 16)
94 #define LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 16 : 32)
95 #define LONG_LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 32 : 64)
96 #define FLOAT_TYPE_SIZE 32
97 #define DOUBLE_TYPE_SIZE 32
98 #define LONG_DOUBLE_TYPE_SIZE 32
100 #define DEFAULT_SIGNED_CHAR 1
102 #define SIZE_TYPE (INT_TYPE_SIZE == 8 ? "long unsigned int" : "unsigned int")
103 #define PTRDIFF_TYPE (INT_TYPE_SIZE == 8 ? "long int" :"int")
105 #define WCHAR_TYPE_SIZE 16
107 #define FIRST_PSEUDO_REGISTER 36
109 #define FIXED_REGISTERS {\
127 1,1 /* arg pointer */ }
129 #define CALL_USED_REGISTERS { \
147 1,1 /* arg pointer */ }
149 #define REG_ALLOC_ORDER { \
157 17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2, \
162 #define ORDER_REGS_FOR_LOCAL_ALLOC order_regs_for_local_alloc ()
165 #define HARD_REGNO_NREGS(REGNO, MODE) ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
167 #define HARD_REGNO_MODE_OK(REGNO, MODE) avr_hard_regno_mode_ok(REGNO, MODE)
169 #define MODES_TIEABLE_P(MODE1, MODE2) 1
174 POINTER_X_REGS, /* r26 - r27 */
175 POINTER_Y_REGS, /* r28 - r29 */
176 POINTER_Z_REGS, /* r30 - r31 */
177 STACK_REG, /* STACK */
178 BASE_POINTER_REGS, /* r28 - r31 */
179 POINTER_REGS, /* r26 - r31 */
180 ADDW_REGS, /* r24 - r31 */
181 SIMPLE_LD_REGS, /* r16 - r23 */
182 LD_REGS, /* r16 - r31 */
183 NO_LD_REGS, /* r0 - r15 */
184 GENERAL_REGS, /* r0 - r31 */
185 ALL_REGS, LIM_REG_CLASSES
189 #define N_REG_CLASSES (int)LIM_REG_CLASSES
191 #define REG_CLASS_NAMES { \
194 "POINTER_X_REGS", /* r26 - r27 */ \
195 "POINTER_Y_REGS", /* r28 - r29 */ \
196 "POINTER_Z_REGS", /* r30 - r31 */ \
197 "STACK_REG", /* STACK */ \
198 "BASE_POINTER_REGS", /* r28 - r31 */ \
199 "POINTER_REGS", /* r26 - r31 */ \
200 "ADDW_REGS", /* r24 - r31 */ \
201 "SIMPLE_LD_REGS", /* r16 - r23 */ \
202 "LD_REGS", /* r16 - r31 */ \
203 "NO_LD_REGS", /* r0 - r15 */ \
204 "GENERAL_REGS", /* r0 - r31 */ \
212 #define REG_CLASS_CONTENTS { \
213 {0x00000000,0x00000000}, /* NO_REGS */ \
214 {0x00000001,0x00000000}, /* R0_REG */ \
215 {3 << REG_X,0x00000000}, /* POINTER_X_REGS, r26 - r27 */ \
216 {3 << REG_Y,0x00000000}, /* POINTER_Y_REGS, r28 - r29 */ \
217 {3 << REG_Z,0x00000000}, /* POINTER_Z_REGS, r30 - r31 */ \
218 {0x00000000,0x00000003}, /* STACK_REG, STACK */ \
219 {(3 << REG_Y) | (3 << REG_Z), \
220 0x00000000}, /* BASE_POINTER_REGS, r28 - r31 */ \
221 {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z), \
222 0x00000000}, /* POINTER_REGS, r26 - r31 */ \
223 {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z) | (3 << REG_W), \
224 0x00000000}, /* ADDW_REGS, r24 - r31 */ \
225 {0x00ff0000,0x00000000}, /* SIMPLE_LD_REGS r16 - r23 */ \
226 {(3 << REG_X)|(3 << REG_Y)|(3 << REG_Z)|(3 << REG_W)|(0xff << 16), \
227 0x00000000}, /* LD_REGS, r16 - r31 */ \
228 {0x0000ffff,0x00000000}, /* NO_LD_REGS r0 - r15 */ \
229 {0xffffffff,0x00000000}, /* GENERAL_REGS, r0 - r31 */ \
230 {0xffffffff,0x00000003} /* ALL_REGS */ \
233 #define REGNO_REG_CLASS(R) avr_regno_reg_class(R)
235 #define BASE_REG_CLASS (reload_completed ? BASE_POINTER_REGS : POINTER_REGS)
237 #define INDEX_REG_CLASS NO_REGS
239 #define REG_CLASS_FROM_LETTER(C) avr_reg_class_from_letter(C)
241 #define REGNO_OK_FOR_BASE_P(r) (((r) < FIRST_PSEUDO_REGISTER \
245 || (r) == ARG_POINTER_REGNUM)) \
247 && (reg_renumber[r] == REG_X \
248 || reg_renumber[r] == REG_Y \
249 || reg_renumber[r] == REG_Z \
250 || (reg_renumber[r] \
251 == ARG_POINTER_REGNUM))))
253 #define REGNO_OK_FOR_INDEX_P(NUM) 0
255 #define PREFERRED_RELOAD_CLASS(X, CLASS) preferred_reload_class(X,CLASS)
257 #define SMALL_REGISTER_CLASSES 1
259 #define CLASS_LIKELY_SPILLED_P(c) class_likely_spilled_p(c)
261 #define CLASS_MAX_NREGS(CLASS, MODE) class_max_nregs (CLASS, MODE)
263 #define CONST_OK_FOR_LETTER_P(VALUE, C) \
264 ((C) == 'I' ? (VALUE) >= 0 && (VALUE) <= 63 : \
265 (C) == 'J' ? (VALUE) <= 0 && (VALUE) >= -63: \
266 (C) == 'K' ? (VALUE) == 2 : \
267 (C) == 'L' ? (VALUE) == 0 : \
268 (C) == 'M' ? (VALUE) >= 0 && (VALUE) <= 0xff : \
269 (C) == 'N' ? (VALUE) == -1: \
270 (C) == 'O' ? (VALUE) == 8 || (VALUE) == 16 || (VALUE) == 24: \
271 (C) == 'P' ? (VALUE) == 1 : \
274 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
275 ((C) == 'G' ? (VALUE) == CONST0_RTX (SFmode) \
278 #define EXTRA_CONSTRAINT(x, c) extra_constraint(x, c)
280 #define STACK_PUSH_CODE POST_DEC
282 #define STACK_GROWS_DOWNWARD
284 #define STARTING_FRAME_OFFSET 1
286 #define STACK_POINTER_OFFSET 1
288 #define FIRST_PARM_OFFSET(FUNDECL) 0
290 #define STACK_BOUNDARY 8
292 #define STACK_POINTER_REGNUM 32
294 #define FRAME_POINTER_REGNUM REG_Y
296 #define ARG_POINTER_REGNUM 34
298 #define STATIC_CHAIN_REGNUM 2
300 #define FRAME_POINTER_REQUIRED frame_pointer_required_p()
302 #define ELIMINABLE_REGS { \
303 {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM}, \
304 {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM} \
305 ,{FRAME_POINTER_REGNUM+1,STACK_POINTER_REGNUM+1}}
307 #define CAN_ELIMINATE(FROM, TO) (((FROM) == ARG_POINTER_REGNUM \
308 && (TO) == FRAME_POINTER_REGNUM) \
309 || (((FROM) == FRAME_POINTER_REGNUM \
310 || (FROM) == FRAME_POINTER_REGNUM+1) \
311 && ! FRAME_POINTER_REQUIRED \
314 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
315 OFFSET = initial_elimination_offset (FROM, TO)
317 #define RETURN_ADDR_RTX(count, x) \
318 gen_rtx_MEM (Pmode, memory_address (Pmode, plus_constant (tem, 1)))
320 #define PUSH_ROUNDING(NPUSHED) (NPUSHED)
322 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
324 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) (function_arg (&(CUM), MODE, TYPE, NAMED))
326 typedef struct avr_args {
327 int nregs; /* # registers available for passing */
328 int regno; /* next available register number */
331 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
332 init_cumulative_args (&(CUM), FNTYPE, LIBNAME, FNDECL)
334 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
335 (function_arg_advance (&CUM, MODE, TYPE, NAMED))
337 #define FUNCTION_ARG_REGNO_P(r) function_arg_regno_p(r)
339 extern int avr_reg_order[];
341 #define RET_REGISTER avr_ret_register ()
343 #define FUNCTION_VALUE(VALTYPE, FUNC) avr_function_value (VALTYPE, FUNC)
345 #define LIBCALL_VALUE(MODE) avr_libcall_value (MODE)
347 #define FUNCTION_VALUE_REGNO_P(N) ((int) (N) == RET_REGISTER)
349 #define DEFAULT_PCC_STRUCT_RETURN 0
351 #define EPILOGUE_USES(REGNO) 0
353 #define HAVE_POST_INCREMENT 1
354 #define HAVE_PRE_DECREMENT 1
356 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
358 #define MAX_REGS_PER_ADDRESS 1
361 # define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
363 if (legitimate_address_p (mode, operand, 1)) \
367 # define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
369 if (legitimate_address_p (mode, operand, 0)) \
374 #define REG_OK_FOR_BASE_NOSTRICT_P(X) \
375 (REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X))
377 #define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
380 # define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X)
382 # define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NOSTRICT_P (X)
385 #define REG_OK_FOR_INDEX_P(X) 0
387 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
389 (X) = legitimize_address (X, OLDX, MODE); \
390 if (memory_address_p (MODE, X)) \
394 #define XEXP_(X,Y) (X)
395 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN) \
397 if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC)) \
399 push_reload (XEXP (X,0), XEXP (X,0), &XEXP (X,0), &XEXP (X,0), \
400 POINTER_REGS, GET_MODE (X),GET_MODE (X) , 0, 0, \
401 OPNUM, RELOAD_OTHER); \
404 if (GET_CODE (X) == PLUS \
405 && REG_P (XEXP (X, 0)) \
406 && GET_CODE (XEXP (X, 1)) == CONST_INT \
407 && INTVAL (XEXP (X, 1)) >= 1) \
409 int fit = INTVAL (XEXP (X, 1)) <= (64 - GET_MODE_SIZE (MODE)); \
412 if (reg_equiv_address[REGNO (XEXP (X, 0))] != 0) \
414 int regno = REGNO (XEXP (X, 0)); \
415 rtx mem = make_memloc (X, regno); \
416 push_reload (XEXP (mem,0), NULL, &XEXP (mem,0), NULL, \
417 POINTER_REGS, Pmode, VOIDmode, 0, 0, \
418 1, ADDR_TYPE (TYPE)); \
419 push_reload (mem, NULL_RTX, &XEXP (X, 0), NULL, \
420 BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
424 push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL, \
425 BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
429 else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
431 push_reload (X, NULL_RTX, &X, NULL, \
432 POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
439 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
440 if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) \
443 #define LEGITIMATE_CONSTANT_P(X) 1
445 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
446 : (TO) == STACK_REG ? 12 \
449 #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 : \
450 (MODE)==HImode ? 4 : \
451 (MODE)==SImode ? 8 : \
452 (MODE)==SFmode ? 8 : 16)
454 #define BRANCH_COST 0
456 #define SLOW_BYTE_ACCESS 0
458 #define NO_FUNCTION_CSE
460 #define TEXT_SECTION_ASM_OP "\t.text"
462 #define DATA_SECTION_ASM_OP "\t.data"
464 #define BSS_SECTION_ASM_OP "\t.section .bss"
466 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
467 There are no shared libraries on this target, and these sections are
468 placed in the read-only program memory, so they are not writable. */
470 #undef CTORS_SECTION_ASM_OP
471 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"a\",@progbits"
473 #undef DTORS_SECTION_ASM_OP
474 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits"
476 #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor
478 #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
480 #define JUMP_TABLES_IN_TEXT_SECTION 0
482 #define ASM_COMMENT_START " ; "
484 #define ASM_APP_ON "/* #APP */\n"
486 #define ASM_APP_OFF "/* #NOAPP */\n"
488 /* Switch into a generic section. */
489 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
490 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
492 #define ASM_OUTPUT_ASCII(FILE, P, SIZE) gas_output_ascii (FILE,P,SIZE)
494 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C) ((C) == '\n' \
497 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
499 fputs ("\t.comm ", (STREAM)); \
500 assemble_name ((STREAM), (NAME)); \
501 fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE)); \
504 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED) \
505 asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
507 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED) \
509 fputs ("\t.lcomm ", (STREAM)); \
510 assemble_name ((STREAM), (NAME)); \
511 fprintf ((STREAM), ",%d\n", (int)(SIZE)); \
517 #define TYPE_ASM_OP "\t.type\t"
518 #define SIZE_ASM_OP "\t.size\t"
519 #define WEAK_ASM_OP "\t.weak\t"
520 /* Define the strings used for the special svr4 .type and .size directives.
521 These strings generally do not vary from one system running svr4 to
522 another, but if a given system (e.g. m88k running svr) needs to use
523 different pseudo-op names for these, they may be overridden in the
524 file which includes this one. */
527 #undef TYPE_OPERAND_FMT
528 #define TYPE_OPERAND_FMT "@%s"
529 /* The following macro defines the format used to output the second
530 operand of the .type assembler directive. Different svr4 assemblers
531 expect various different forms for this operand. The one given here
532 is just a default. You may need to override it in your machine-
533 specific tm.h file (depending upon the particulars of your assembler). */
535 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
537 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
538 ASM_OUTPUT_LABEL (FILE, NAME); \
541 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
543 if (!flag_inhibit_size_directive) \
544 ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \
547 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
549 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
550 size_directive_output = 0; \
551 if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
553 size_directive_output = 1; \
554 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, \
555 int_size_in_bytes (TREE_TYPE (DECL))); \
557 ASM_OUTPUT_LABEL(FILE, NAME); \
560 #undef ASM_FINISH_DECLARE_OBJECT
561 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
563 const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
564 HOST_WIDE_INT size; \
565 if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
566 && ! AT_END && TOP_LEVEL \
567 && DECL_INITIAL (DECL) == error_mark_node \
568 && !size_directive_output) \
570 size_directive_output = 1; \
571 size = int_size_in_bytes (TREE_TYPE (DECL)); \
572 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size); \
578 "\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\
579 \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\
580 \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\
581 \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\
582 \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\
583 \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\
584 \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\
585 \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"
586 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
587 ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
588 corresponds to a particular byte value [0..255]. For any
589 given byte value, if the value in the corresponding table
590 position is zero, the given character can be output directly.
591 If the table value is 1, the byte must be output as a \ooo
592 octal escape. If the tables value is anything else, then the
593 byte value should be output as a \ followed by the value
594 in the table. Note that we can use standard UN*X escape
595 sequences for many control characters, but we don't use
596 \a to represent BEL because some svr4 assemblers (e.g. on
597 the i386) don't know about that. Also, we don't use \v
598 since some versions of gas, such as 2.2 did not accept it. */
600 #define STRING_LIMIT ((unsigned) 64)
601 #define STRING_ASM_OP "\t.string\t"
602 /* Some svr4 assemblers have a limit on the number of characters which
603 can appear in the operand of a .string directive. If your assembler
604 has such a limitation, you should define STRING_LIMIT to reflect that
605 limit. Note that at least some svr4 assemblers have a limit on the
606 actual number of bytes in the double-quoted string, and that they
607 count each character in an escape sequence as one byte. Thus, an
608 escape sequence like \377 would count as four bytes.
610 If your target assembler doesn't support the .string directive, you
611 should define this to zero. */
613 /* Globalizing directive for a label. */
614 #define GLOBAL_ASM_OP ".global\t"
616 #define ASM_WEAKEN_LABEL(FILE, NAME) \
619 fputs ("\t.weak\t", (FILE)); \
620 assemble_name ((FILE), (NAME)); \
621 fputc ('\n', (FILE)); \
625 #define SUPPORTS_WEAK 1
627 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \
628 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
630 #define HAS_INIT_SECTION 1
632 #define REGISTER_NAMES { \
633 "r0","r1","r2","r3","r4","r5","r6","r7", \
634 "r8","r9","r10","r11","r12","r13","r14","r15", \
635 "r16","r17","r18","r19","r20","r21","r22","r23", \
636 "r24","r25","r26","r27","r28","r29","r30","r31", \
637 "__SPL__","__SPH__","argL","argH"}
639 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
641 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
643 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~')
645 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
647 #define USER_LABEL_PREFIX ""
649 #define ASSEMBLER_DIALECT AVR_ENHANCED
651 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO) \
653 gcc_assert (REGNO < 32); \
654 fprintf (STREAM, "\tpush\tr%d", REGNO); \
657 #define ASM_OUTPUT_REG_POP(STREAM, REGNO) \
659 gcc_assert (REGNO < 32); \
660 fprintf (STREAM, "\tpop\tr%d", REGNO); \
663 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
664 avr_output_addr_vec_elt(STREAM, VALUE)
666 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
667 (switch_to_section (progmem_section), \
668 (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
670 #define ASM_OUTPUT_SKIP(STREAM, N) \
671 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
673 #define ASM_OUTPUT_ALIGN(STREAM, POWER)
675 #define CASE_VECTOR_MODE HImode
677 extern int avr_case_values_threshold;
679 #define CASE_VALUES_THRESHOLD avr_case_values_threshold
681 #undef WORD_REGISTER_OPERATIONS
685 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
689 #define FUNCTION_MODE HImode
691 #define DOLLARS_IN_IDENTIFIERS 0
693 #define NO_DOLLAR_IN_LABEL 1
695 #define TRAMPOLINE_TEMPLATE(FILE) \
696 internal_error ("trampolines not supported")
698 #define TRAMPOLINE_SIZE 4
700 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
702 emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT); \
703 emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
705 /* Store in cc_status the expressions
706 that the condition codes will describe
707 after execution of an instruction whose pattern is EXP.
708 Do not alter them if the instruction would not alter the cc's. */
710 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
712 /* The add insns don't set overflow in a usable way. */
713 #define CC_OVERFLOW_UNUSABLE 01000
714 /* The mov,and,or,xor insns don't set carry. That's ok though as the
715 Z bit is all we need when doing unsigned comparisons on the result of
716 these insns (since they're always with 0). However, conditions.h has
717 CC_NO_OVERFLOW defined for this purpose. Rename it to something more
719 #define CC_NO_CARRY CC_NO_OVERFLOW
722 /* Output assembler code to FILE to increment profiler label # LABELNO
723 for profiling a function entry. */
725 #define FUNCTION_PROFILER(FILE, LABELNO) \
726 fprintf (FILE, "/* profiler %d */", (LABELNO))
728 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
729 adjust_insn_length (INSN, LENGTH))
731 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
733 #define CC1_SPEC "%{profile:-p}"
735 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
736 %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
737 %{!fexceptions:-fno-exceptions}"
738 /* A C string constant that tells the GCC drvier program options to
739 pass to `cc1plus'. */
741 #define ASM_SPEC "%{mmcu=*:-mmcu=%*}"
743 #define LINK_SPEC " %{!mmcu*:-m avr2}\
744 %{mmcu=at90s1200|mmcu=attiny11|mmcu=attiny12|mmcu=attiny15|mmcu=attiny28:-m avr1} \
745 %{mmcu=attiny22|mmcu=attiny26|mmcu=at90s2*|mmcu=at90s4*|mmcu=at90s8*|mmcu=at90c8*|mmcu=at86rf401|mmcu=attiny13|mmcu=attiny2313:-m avr2}\
746 %{mmcu=atmega103|mmcu=atmega603|mmcu=at43*|mmcu=at76*:-m avr3}\
747 %{mmcu=atmega8*|mmcu=atmega48:-m avr4}\
748 %{mmcu=atmega16*|mmcu=atmega32*|mmcu=atmega64*|mmcu=atmega128|mmcu=at90can128|mmcu=at94k:-m avr5}\
749 %{mmcu=atmega325|mmcu=atmega3250|mmcu=atmega48|mmcu=atmega88|mmcu=atmega64|mmcu=atmega645|mmcu=atmega6450|mmcu=atmega128|mmcu=at90can128|mmcu=at90can128|mmcu=atmega162|mmcu=atmega165|mmcu=atmega168|mmcu=atmega169: -Tdata 0x800100} "
752 "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
754 #define LIBSTDCXX "-lgcc"
755 /* No libstdc++ for now. Empty string doesn't work. */
757 #define LIBGCC_SPEC \
758 "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
760 #define STARTFILE_SPEC "%(crt_binutils)"
762 #define ENDFILE_SPEC ""
764 #define CRT_BINUTILS_SPECS "\
765 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
766 %{mmcu=attiny11:crttn11.o%s} \
767 %{mmcu=attiny12:crttn12.o%s} \
768 %{mmcu=attiny15:crttn15.o%s} \
769 %{mmcu=attiny28:crttn28.o%s} \
770 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
771 %{mmcu=at90s2313:crts2313.o%s} \
772 %{mmcu=at90s2323:crts2323.o%s} \
773 %{mmcu=at90s2333:crts2333.o%s} \
774 %{mmcu=at90s2343:crts2343.o%s} \
775 %{mmcu=attiny22:crttn22.o%s} \
776 %{mmcu=attiny26:crttn26.o%s} \
777 %{mmcu=at90s4433:crts4433.o%s} \
778 %{mmcu=at90s4414:crts4414.o%s} \
779 %{mmcu=at90s4434:crts4434.o%s} \
780 %{mmcu=at90c8534:crtc8534.o%s} \
781 %{mmcu=at90s8535:crts8535.o%s} \
782 %{mmcu=at86rf401:crt86401.o%s} \
783 %{mmcu=attiny13:crttn13.o%s} \
784 %{mmcu=attiny2313:crttn2313.o%s} \
785 %{mmcu=atmega103|mmcu=avr3:crtm103.o%s} \
786 %{mmcu=atmega603:crtm603.o%s} \
787 %{mmcu=at43usb320:crt43320.o%s} \
788 %{mmcu=at43usb355:crt43355.o%s} \
789 %{mmcu=at76c711:crt76711.o%s} \
790 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
791 %{mmcu=atmega48:crtm48.o%s} \
792 %{mmcu=atmega88:crtm88.o%s} \
793 %{mmcu=atmega8515:crtm8515.o%s} \
794 %{mmcu=atmega8535:crtm8535.o%s} \
795 %{mmcu=atmega16:crtm16.o%s} \
796 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
797 %{mmcu=atmega162:crtm162.o%s} \
798 %{mmcu=atmega163:crtm163.o%s} \
799 %{mmcu=atmega165:crtm165.o%s} \
800 %{mmcu=atmega168:crtm168.o%s} \
801 %{mmcu=atmega169:crtm169.o%s} \
802 %{mmcu=atmega32:crtm32.o%s} \
803 %{mmcu=atmega323:crtm323.o%s} \
804 %{mmcu=atmega325:crtm325.o%s} \
805 %{mmcu=atmega3250:crtm3250.o%s} \
806 %{mmcu=atmega64:crtm64.o%s} \
807 %{mmcu=atmega645:crtm6450.o%s} \
808 %{mmcu=atmega6450:crtm6450.o%s} \
809 %{mmcu=atmega128:crtm128.o%s} \
810 %{mmcu=at90can128:crtcan128.o%s} \
811 %{mmcu=at94k:crtat94k.o%s}"
813 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
815 /* This is the default without any -mmcu=* option (AT90S*). */
816 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
818 /* This is undefined macro for collect2 disabling */
819 #define LINKER_NAME "ld"
821 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
822 TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
824 /* Note that the other files fail to use these
825 in some of the places where they should. */
827 #if defined(__STDC__) || defined(ALMOST_STDC)
828 #define AS2(a,b,c) #a " " #b "," #c
829 #define AS2C(b,c) " " #b "," #c
830 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
831 #define AS1(a,b) #a " " #b
833 #define AS1(a,b) "a b"
834 #define AS2(a,b,c) "a b,c"
835 #define AS2C(b,c) " b,c"
836 #define AS3(a,b,c,d) "a b,c,d"
838 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
839 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
840 #define CR_TAB "\n\t"
842 /* Temporary register r0 */
845 /* zero register r1 */
848 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG