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)
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); \
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__"); \
39 builtin_define ("__AVR_ASM_ONLY__"); \
41 builtin_define ("__AVR_ENHANCED__"); \
43 builtin_define ("__AVR_MEGA__"); \
44 if (TARGET_NO_INTERRUPTS) \
45 builtin_define ("__NO_INTERRUPTS__"); \
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
;
56 extern GTY(()) section
*progmem_section
;
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)
63 #define TARGET_VERSION fprintf (stderr, " (GNU assembler syntax)");
65 #define OVERRIDE_OPTIONS avr_override_options ()
67 #define CAN_DEBUG_WITHOUT_FP
69 #define BITS_BIG_ENDIAN 0
70 #define BYTES_BIG_ENDIAN 0
71 #define WORDS_BIG_ENDIAN 0
74 /* This is to get correct SI and DI modes in libgcc2.c (32 and 64 bits). */
75 #define UNITS_PER_WORD 4
77 /* Width of a word, in units (bytes). */
78 #define UNITS_PER_WORD 1
81 #define POINTER_SIZE 16
84 /* Maximum sized of reasonable data type
85 DImode or Dfmode ... */
86 #define MAX_FIXED_MODE_SIZE 32
88 #define PARM_BOUNDARY 8
90 #define FUNCTION_BOUNDARY 8
92 #define EMPTY_FIELD_BOUNDARY 8
94 /* No data type wants to be aligned rounder than this. */
95 #define BIGGEST_ALIGNMENT 8
98 #define STRICT_ALIGNMENT 0
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
108 #define DEFAULT_SIGNED_CHAR 1
110 #define SIZE_TYPE (INT_TYPE_SIZE == 8 ? "long unsigned int" : "unsigned int")
111 #define PTRDIFF_TYPE (INT_TYPE_SIZE == 8 ? "long int" :"int")
113 #define WCHAR_TYPE_SIZE 16
115 #define FIRST_PSEUDO_REGISTER 36
117 #define FIXED_REGISTERS {\
135 1,1 /* arg pointer */ }
137 #define CALL_USED_REGISTERS { \
155 1,1 /* arg pointer */ }
157 #define REG_ALLOC_ORDER { \
165 17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2, \
170 #define ORDER_REGS_FOR_LOCAL_ALLOC order_regs_for_local_alloc ()
173 #define HARD_REGNO_NREGS(REGNO, MODE) ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
175 #define HARD_REGNO_MODE_OK(REGNO, MODE) avr_hard_regno_mode_ok(REGNO, MODE)
177 #define MODES_TIEABLE_P(MODE1, MODE2) 1
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
197 #define N_REG_CLASSES (int)LIM_REG_CLASSES
199 #define REG_CLASS_NAMES { \
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 */ \
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 */ \
236 #define REGNO_REG_CLASS(R) avr_regno_reg_class(R)
238 #define BASE_REG_CLASS (reload_completed ? BASE_POINTER_REGS : POINTER_REGS)
240 #define INDEX_REG_CLASS NO_REGS
242 #define REGNO_OK_FOR_BASE_P(r) (((r) < FIRST_PSEUDO_REGISTER \
246 || (r) == ARG_POINTER_REGNUM)) \
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))))
254 #define REGNO_OK_FOR_INDEX_P(NUM) 0
256 #define PREFERRED_RELOAD_CLASS(X, CLASS) preferred_reload_class(X,CLASS)
258 #define SMALL_REGISTER_CLASSES 1
260 #define CLASS_LIKELY_SPILLED_P(c) class_likely_spilled_p(c)
262 #define CLASS_MAX_NREGS(CLASS, MODE) class_max_nregs (CLASS, MODE)
264 #define STACK_PUSH_CODE POST_DEC
266 #define STACK_GROWS_DOWNWARD
268 #define STARTING_FRAME_OFFSET 1
270 #define STACK_POINTER_OFFSET 1
272 #define FIRST_PARM_OFFSET(FUNDECL) 0
274 #define STACK_BOUNDARY 8
276 #define STACK_POINTER_REGNUM 32
278 #define FRAME_POINTER_REGNUM REG_Y
280 #define ARG_POINTER_REGNUM 34
282 #define STATIC_CHAIN_REGNUM 2
284 #define FRAME_POINTER_REQUIRED frame_pointer_required_p()
286 /* Offset from the frame pointer register value to the top of the stack. */
287 #define FRAME_POINTER_CFA_OFFSET(FNDECL) 0
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}}
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 \
301 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET) \
302 OFFSET = initial_elimination_offset (FROM, TO)
304 #define RETURN_ADDR_RTX(count, x) \
305 gen_rtx_MEM (Pmode, memory_address (Pmode, plus_constant (tem, 1)))
307 #define PUSH_ROUNDING(NPUSHED) (NPUSHED)
309 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
311 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) (function_arg (&(CUM), MODE, TYPE, NAMED))
313 typedef struct avr_args
{
314 int nregs
; /* # registers available for passing */
315 int regno
; /* next available register number */
318 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
319 init_cumulative_args (&(CUM), FNTYPE, LIBNAME, FNDECL)
321 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED) \
322 (function_arg_advance (&CUM, MODE, TYPE, NAMED))
324 #define FUNCTION_ARG_REGNO_P(r) function_arg_regno_p(r)
326 extern int avr_reg_order
[];
328 #define RET_REGISTER avr_ret_register ()
330 #define FUNCTION_VALUE(VALTYPE, FUNC) avr_function_value (VALTYPE, FUNC)
332 #define LIBCALL_VALUE(MODE) avr_libcall_value (MODE)
334 #define FUNCTION_VALUE_REGNO_P(N) ((int) (N) == RET_REGISTER)
336 #define DEFAULT_PCC_STRUCT_RETURN 0
338 #define EPILOGUE_USES(REGNO) 0
340 #define HAVE_POST_INCREMENT 1
341 #define HAVE_PRE_DECREMENT 1
343 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
345 #define MAX_REGS_PER_ADDRESS 1
348 # define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
350 if (legitimate_address_p (mode, operand, 1)) \
354 # define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
356 if (legitimate_address_p (mode, operand, 0)) \
361 #define REG_OK_FOR_BASE_NOSTRICT_P(X) \
362 (REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X))
364 #define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
367 # define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X)
369 # define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NOSTRICT_P (X)
372 #define REG_OK_FOR_INDEX_P(X) 0
374 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
376 (X) = legitimize_address (X, OLDX, MODE); \
377 if (memory_address_p (MODE, X)) \
381 #define XEXP_(X,Y) (X)
382 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN) \
384 if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC)) \
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); \
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) \
396 int fit = INTVAL (XEXP (X, 1)) <= (64 - GET_MODE_SIZE (MODE)); \
399 if (reg_equiv_address[REGNO (XEXP (X, 0))] != 0) \
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, \
411 push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL, \
412 BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
416 else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
418 push_reload (X, NULL_RTX, &X, NULL, \
419 POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
426 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL) \
427 if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) \
430 #define LEGITIMATE_CONSTANT_P(X) 1
432 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
433 : (TO) == STACK_REG ? 12 \
436 #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 : \
437 (MODE)==HImode ? 4 : \
438 (MODE)==SImode ? 8 : \
439 (MODE)==SFmode ? 8 : 16)
441 #define BRANCH_COST 0
443 #define SLOW_BYTE_ACCESS 0
445 #define NO_FUNCTION_CSE
447 #define TEXT_SECTION_ASM_OP "\t.text"
449 #define DATA_SECTION_ASM_OP "\t.data"
451 #define BSS_SECTION_ASM_OP "\t.section .bss"
453 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
454 There are no shared libraries on this target, and these sections are
455 placed in the read-only program memory, so they are not writable. */
457 #undef CTORS_SECTION_ASM_OP
458 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"a\",@progbits"
460 #undef DTORS_SECTION_ASM_OP
461 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits"
463 #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor
465 #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
467 #define JUMP_TABLES_IN_TEXT_SECTION 0
469 #define ASM_COMMENT_START " ; "
471 #define ASM_APP_ON "/* #APP */\n"
473 #define ASM_APP_OFF "/* #NOAPP */\n"
475 /* Switch into a generic section. */
476 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
477 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
479 #define ASM_OUTPUT_ASCII(FILE, P, SIZE) gas_output_ascii (FILE,P,SIZE)
481 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C) ((C) == '\n' \
484 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
486 fputs ("\t.comm ", (STREAM)); \
487 assemble_name ((STREAM), (NAME)); \
488 fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE)); \
491 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED) \
492 asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
494 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED) \
496 fputs ("\t.lcomm ", (STREAM)); \
497 assemble_name ((STREAM), (NAME)); \
498 fprintf ((STREAM), ",%d\n", (int)(SIZE)); \
504 #define TYPE_ASM_OP "\t.type\t"
505 #define SIZE_ASM_OP "\t.size\t"
506 #define WEAK_ASM_OP "\t.weak\t"
507 /* Define the strings used for the special svr4 .type and .size directives.
508 These strings generally do not vary from one system running svr4 to
509 another, but if a given system (e.g. m88k running svr) needs to use
510 different pseudo-op names for these, they may be overridden in the
511 file which includes this one. */
514 #undef TYPE_OPERAND_FMT
515 #define TYPE_OPERAND_FMT "@%s"
516 /* The following macro defines the format used to output the second
517 operand of the .type assembler directive. Different svr4 assemblers
518 expect various different forms for this operand. The one given here
519 is just a default. You may need to override it in your machine-
520 specific tm.h file (depending upon the particulars of your assembler). */
522 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
524 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function"); \
525 ASM_OUTPUT_LABEL (FILE, NAME); \
528 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL) \
530 if (!flag_inhibit_size_directive) \
531 ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME); \
534 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL) \
536 ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object"); \
537 size_directive_output = 0; \
538 if (!flag_inhibit_size_directive && DECL_SIZE (DECL)) \
540 size_directive_output = 1; \
541 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME, \
542 int_size_in_bytes (TREE_TYPE (DECL))); \
544 ASM_OUTPUT_LABEL(FILE, NAME); \
547 #undef ASM_FINISH_DECLARE_OBJECT
548 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END) \
550 const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0); \
551 HOST_WIDE_INT size; \
552 if (!flag_inhibit_size_directive && DECL_SIZE (DECL) \
553 && ! AT_END && TOP_LEVEL \
554 && DECL_INITIAL (DECL) == error_mark_node \
555 && !size_directive_output) \
557 size_directive_output = 1; \
558 size = int_size_in_bytes (TREE_TYPE (DECL)); \
559 ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size); \
565 "\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\
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\
567 \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\
568 \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\
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 \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\
572 \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"
573 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
574 ASM_OUTPUT_LIMITED_STRING macros. Each byte in the table
575 corresponds to a particular byte value [0..255]. For any
576 given byte value, if the value in the corresponding table
577 position is zero, the given character can be output directly.
578 If the table value is 1, the byte must be output as a \ooo
579 octal escape. If the tables value is anything else, then the
580 byte value should be output as a \ followed by the value
581 in the table. Note that we can use standard UN*X escape
582 sequences for many control characters, but we don't use
583 \a to represent BEL because some svr4 assemblers (e.g. on
584 the i386) don't know about that. Also, we don't use \v
585 since some versions of gas, such as 2.2 did not accept it. */
587 #define STRING_LIMIT ((unsigned) 64)
588 #define STRING_ASM_OP "\t.string\t"
589 /* Some svr4 assemblers have a limit on the number of characters which
590 can appear in the operand of a .string directive. If your assembler
591 has such a limitation, you should define STRING_LIMIT to reflect that
592 limit. Note that at least some svr4 assemblers have a limit on the
593 actual number of bytes in the double-quoted string, and that they
594 count each character in an escape sequence as one byte. Thus, an
595 escape sequence like \377 would count as four bytes.
597 If your target assembler doesn't support the .string directive, you
598 should define this to zero. */
600 /* Globalizing directive for a label. */
601 #define GLOBAL_ASM_OP ".global\t"
603 #define SET_ASM_OP "\t.set\t"
605 #define ASM_WEAKEN_LABEL(FILE, NAME) \
608 fputs ("\t.weak\t", (FILE)); \
609 assemble_name ((FILE), (NAME)); \
610 fputc ('\n', (FILE)); \
614 #define SUPPORTS_WEAK 1
616 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM) \
617 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
619 #define HAS_INIT_SECTION 1
621 #define REGISTER_NAMES { \
622 "r0","r1","r2","r3","r4","r5","r6","r7", \
623 "r8","r9","r10","r11","r12","r13","r14","r15", \
624 "r16","r17","r18","r19","r20","r21","r22","r23", \
625 "r24","r25","r26","r27","r28","r29","r30","r31", \
626 "__SPL__","__SPH__","argL","argH"}
628 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
630 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
632 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~')
634 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
636 #define USER_LABEL_PREFIX ""
638 #define ASSEMBLER_DIALECT AVR_HAVE_MOVW
640 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO) \
642 gcc_assert (REGNO < 32); \
643 fprintf (STREAM, "\tpush\tr%d", REGNO); \
646 #define ASM_OUTPUT_REG_POP(STREAM, REGNO) \
648 gcc_assert (REGNO < 32); \
649 fprintf (STREAM, "\tpop\tr%d", REGNO); \
652 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE) \
653 avr_output_addr_vec_elt(STREAM, VALUE)
655 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
656 (switch_to_section (progmem_section), \
657 (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
659 #define ASM_OUTPUT_SKIP(STREAM, N) \
660 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
662 #define ASM_OUTPUT_ALIGN(STREAM, POWER)
664 #define CASE_VECTOR_MODE HImode
666 extern int avr_case_values_threshold
;
668 #define CASE_VALUES_THRESHOLD avr_case_values_threshold
670 #undef WORD_REGISTER_OPERATIONS
674 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
678 #define FUNCTION_MODE HImode
680 #define DOLLARS_IN_IDENTIFIERS 0
682 #define NO_DOLLAR_IN_LABEL 1
684 #define TRAMPOLINE_TEMPLATE(FILE) \
685 internal_error ("trampolines not supported")
687 #define TRAMPOLINE_SIZE 4
689 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
691 emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT); \
692 emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
694 /* Store in cc_status the expressions
695 that the condition codes will describe
696 after execution of an instruction whose pattern is EXP.
697 Do not alter them if the instruction would not alter the cc's. */
699 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
701 /* The add insns don't set overflow in a usable way. */
702 #define CC_OVERFLOW_UNUSABLE 01000
703 /* The mov,and,or,xor insns don't set carry. That's ok though as the
704 Z bit is all we need when doing unsigned comparisons on the result of
705 these insns (since they're always with 0). However, conditions.h has
706 CC_NO_OVERFLOW defined for this purpose. Rename it to something more
708 #define CC_NO_CARRY CC_NO_OVERFLOW
711 /* Output assembler code to FILE to increment profiler label # LABELNO
712 for profiling a function entry. */
714 #define FUNCTION_PROFILER(FILE, LABELNO) \
715 fprintf (FILE, "/* profiler %d */", (LABELNO))
717 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
718 adjust_insn_length (INSN, LENGTH))
720 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
722 #define CC1_SPEC "%{profile:-p}"
724 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
725 %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
726 %{!fexceptions:-fno-exceptions}"
727 /* A C string constant that tells the GCC drvier program options to
728 pass to `cc1plus'. */
730 #define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;\
733 #define LINK_SPEC " %{!mmcu*:-m avr2}\
738 mmcu=attiny28:-m avr1}\
752 mmcu=attiny8*:-m avr2}\
761 mmcu=at90pwm3:-m avr4}\
792 mmcu=at90usb*: -Tdata 0x800100}\
795 mmcu=atmega1281: -Tdata 0x800200} "
798 "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
800 #define LIBSTDCXX "-lgcc"
801 /* No libstdc++ for now. Empty string doesn't work. */
803 #define LIBGCC_SPEC \
804 "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
806 #define STARTFILE_SPEC "%(crt_binutils)"
808 #define ENDFILE_SPEC ""
810 #define CRT_BINUTILS_SPECS "\
811 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
812 %{mmcu=attiny11:crttn11.o%s} \
813 %{mmcu=attiny12:crttn12.o%s} \
814 %{mmcu=attiny15:crttn15.o%s} \
815 %{mmcu=attiny28:crttn28.o%s} \
816 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
817 %{mmcu=at90s2313:crts2313.o%s} \
818 %{mmcu=at90s2323:crts2323.o%s} \
819 %{mmcu=at90s2333:crts2333.o%s} \
820 %{mmcu=at90s2343:crts2343.o%s} \
821 %{mmcu=attiny22:crttn22.o%s} \
822 %{mmcu=attiny26:crttn26.o%s} \
823 %{mmcu=at90s4433:crts4433.o%s} \
824 %{mmcu=at90s4414:crts4414.o%s} \
825 %{mmcu=at90s4434:crts4434.o%s} \
826 %{mmcu=at90c8534:crtc8534.o%s} \
827 %{mmcu=at90s8535:crts8535.o%s} \
828 %{mmcu=at86rf401:crt86401.o%s} \
829 %{mmcu=attiny13:crttn13.o%s} \
830 %{mmcu=attiny2313|mmcu=avr25:crttn2313.o%s} \
831 %{mmcu=attiny24:crttn24.o%s} \
832 %{mmcu=attiny44:crttn44.o%s} \
833 %{mmcu=attiny84:crttn84.o%s} \
834 %{mmcu=attiny25:crttn25.o%s} \
835 %{mmcu=attiny45:crttn45.o%s} \
836 %{mmcu=attiny85:crttn85.o%s} \
837 %{mmcu=attiny261:crttn261.o%s} \
838 %{mmcu=attiny461:crttn461.o%s} \
839 %{mmcu=attiny861:crttn861.o%s} \
840 %{mmcu=atmega103|mmcu=avr3:crtm103.o%s} \
841 %{mmcu=atmega603:crtm603.o%s} \
842 %{mmcu=at43usb320:crt43320.o%s} \
843 %{mmcu=at43usb355:crt43355.o%s} \
844 %{mmcu=at76c711:crt76711.o%s} \
845 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
846 %{mmcu=atmega48:crtm48.o%s} \
847 %{mmcu=atmega88:crtm88.o%s} \
848 %{mmcu=atmega8515:crtm8515.o%s} \
849 %{mmcu=atmega8535:crtm8535.o%s} \
850 %{mmcu=at90pwm1:crt90pwm1.o%s} \
851 %{mmcu=at90pwm2:crt90pwm2.o%s} \
852 %{mmcu=at90pwm3:crt90pwm3.o%s} \
853 %{mmcu=atmega16:crtm16.o%s} \
854 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
855 %{mmcu=atmega162:crtm162.o%s} \
856 %{mmcu=atmega163:crtm163.o%s} \
857 %{mmcu=atmega164p:crtm164p.o%s} \
858 %{mmcu=atmega165:crtm165.o%s} \
859 %{mmcu=atmega165p:crtm165p.o%s} \
860 %{mmcu=atmega168:crtm168.o%s} \
861 %{mmcu=atmega169:crtm169.o%s} \
862 %{mmcu=atmega169p:crtm169p.o%s} \
863 %{mmcu=atmega32:crtm32.o%s} \
864 %{mmcu=atmega323:crtm323.o%s} \
865 %{mmcu=atmega324p:crtm324p.o%s} \
866 %{mmcu=atmega325:crtm325.o%s} \
867 %{mmcu=atmega3250:crtm3250.o%s} \
868 %{mmcu=atmega329:crtm329.o%s} \
869 %{mmcu=atmega3290:crtm3290.o%s} \
870 %{mmcu=atmega406:crtm406.o%s} \
871 %{mmcu=atmega64:crtm64.o%s} \
872 %{mmcu=atmega640:crtm640.o%s} \
873 %{mmcu=atmega644:crtm644.o%s} \
874 %{mmcu=atmega644p:crtm644p.o%s} \
875 %{mmcu=atmega645:crtm645.o%s} \
876 %{mmcu=atmega6450:crtm6450.o%s} \
877 %{mmcu=atmega649:crtm649.o%s} \
878 %{mmcu=atmega6490:crtm6490.o%s} \
879 %{mmcu=atmega128:crtm128.o%s} \
880 %{mmcu=atmega1280:crtm1280.o%s} \
881 %{mmcu=atmega1281:crtm1281.o%s} \
882 %{mmcu=at90can32:crtcan32.o%s} \
883 %{mmcu=at90can64:crtcan64.o%s} \
884 %{mmcu=at90can128:crtcan128.o%s} \
885 %{mmcu=at90usb646:crtusb646.o%s} \
886 %{mmcu=at90usb647:crtusb647.o%s} \
887 %{mmcu=at90usb1286:crtusb1286.o%s} \
888 %{mmcu=at90usb1287:crtusb1287.o%s} \
889 %{mmcu=at94k:crtat94k.o%s}"
891 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
893 /* This is the default without any -mmcu=* option (AT90S*). */
894 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
896 /* This is undefined macro for collect2 disabling */
897 #define LINKER_NAME "ld"
899 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
900 TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
902 /* Note that the other files fail to use these
903 in some of the places where they should. */
905 #if defined(__STDC__) || defined(ALMOST_STDC)
906 #define AS2(a,b,c) #a " " #b "," #c
907 #define AS2C(b,c) " " #b "," #c
908 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
909 #define AS1(a,b) #a " " #b
911 #define AS1(a,b) "a b"
912 #define AS2(a,b,c) "a b,c"
913 #define AS2C(b,c) " b,c"
914 #define AS3(a,b,c,d) "a b,c,d"
916 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
917 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
918 #define CR_TAB "\n\t"
920 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG