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, 2007
   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_have_mul_p)                       \
  41         builtin_define ("__AVR_ENHANCED__");    \
  42       if (avr_have_mul_p)                       \
  43         builtin_define ("__AVR_HAVE_MUL__");    \
  44       if (avr_mega_p)                           \
  45         builtin_define ("__AVR_MEGA__");        \
  46       if (TARGET_NO_INTERRUPTS)                 \
  47         builtin_define ("__NO_INTERRUPTS__");   \
  48     }                                           \
  49   while (0)
  50
  51 extern const char *avr_base_arch_macro;
  52 extern const char *avr_extra_arch_macro;
  53 extern int avr_mega_p;
  54 extern int avr_have_mul_p;
  55 extern int avr_asm_only_p;
  56 extern int avr_have_movw_lpmx_p;
  57 #ifndef IN_LIBGCC2
  58 extern GTY(()) section *progmem_section;
  59 #endif
  60
  61 #define AVR_MEGA (avr_mega_p && !TARGET_SHORT_CALLS)
  62 #define AVR_HAVE_MUL (avr_have_mul_p)
  63 #define AVR_HAVE_MOVW (avr_have_movw_lpmx_p)
  64 #define AVR_HAVE_LPMX (avr_have_movw_lpmx_p)
  65
  66 #define TARGET_VERSION fprintf (stderr, " (GNU assembler syntax)");
  67
  68 #define OVERRIDE_OPTIONS avr_override_options ()
  69
  70 #define CAN_DEBUG_WITHOUT_FP
  71
  72 #define BITS_BIG_ENDIAN 0
  73 #define BYTES_BIG_ENDIAN 0
  74 #define WORDS_BIG_ENDIAN 0
  75
  76 #ifdef IN_LIBGCC2
  77 /* This is to get correct SI and DI modes in libgcc2.c (32 and 64 bits).  */
  78 #define UNITS_PER_WORD 4
  79 #else
  80 /* Width of a word, in units (bytes).  */
  81 #define UNITS_PER_WORD 1
  82 #endif
  83
  84 #define POINTER_SIZE 16
  85
  86
  87 /* Maximum sized of reasonable data type
  88    DImode or Dfmode ...  */
  89 #define MAX_FIXED_MODE_SIZE 32
  90
  91 #define PARM_BOUNDARY 8
  92
  93 #define FUNCTION_BOUNDARY 8
  94
  95 #define EMPTY_FIELD_BOUNDARY 8
  96
  97 /* No data type wants to be aligned rounder than this.  */
  98 #define BIGGEST_ALIGNMENT 8
  99
 100
 101 #define STRICT_ALIGNMENT 0
 102
 103 #define INT_TYPE_SIZE (TARGET_INT8 ? 8 : 16)
 104 #define SHORT_TYPE_SIZE (INT_TYPE_SIZE == 8 ? INT_TYPE_SIZE : 16)
 105 #define LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 16 : 32)
 106 #define LONG_LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 32 : 64)
 107 #define FLOAT_TYPE_SIZE 32
 108 #define DOUBLE_TYPE_SIZE 32
 109 #define LONG_DOUBLE_TYPE_SIZE 32
 110
 111 #define DEFAULT_SIGNED_CHAR 1
 112
 113 #define SIZE_TYPE (INT_TYPE_SIZE == 8 ? "long unsigned int" : "unsigned int")
 114 #define PTRDIFF_TYPE (INT_TYPE_SIZE == 8 ? "long int" :"int")
 115
 116 #define WCHAR_TYPE_SIZE 16
 117
 118 #define FIRST_PSEUDO_REGISTER 36
 119
 120 #define FIXED_REGISTERS {\
 121   1,1,/* r0 r1 */\
 122   0,0,/* r2 r3 */\
 123   0,0,/* r4 r5 */\
 124   0,0,/* r6 r7 */\
 125   0,0,/* r8 r9 */\
 126   0,0,/* r10 r11 */\
 127   0,0,/* r12 r13 */\
 128   0,0,/* r14 r15 */\
 129   0,0,/* r16 r17 */\
 130   0,0,/* r18 r19 */\
 131   0,0,/* r20 r21 */\
 132   0,0,/* r22 r23 */\
 133   0,0,/* r24 r25 */\
 134   0,0,/* r26 r27 */\
 135   0,0,/* r28 r29 */\
 136   0,0,/* r30 r31 */\
 137   1,1,/*  STACK */\
 138   1,1 /* arg pointer */  }
 139
 140 #define CALL_USED_REGISTERS {                   \
 141   1,1,/* r0 r1 */                               \
 142     0,0,/* r2 r3 */                             \
 143     0,0,/* r4 r5 */                             \
 144     0,0,/* r6 r7 */                             \
 145     0,0,/* r8 r9 */                             \
 146     0,0,/* r10 r11 */                           \
 147     0,0,/* r12 r13 */                           \
 148     0,0,/* r14 r15 */                           \
 149     0,0,/* r16 r17 */                           \
 150     1,1,/* r18 r19 */                           \
 151     1,1,/* r20 r21 */                           \
 152     1,1,/* r22 r23 */                           \
 153     1,1,/* r24 r25 */                           \
 154     1,1,/* r26 r27 */                           \
 155     0,0,/* r28 r29 */                           \
 156     1,1,/* r30 r31 */                           \
 157     1,1,/*  STACK */                            \
 158     1,1 /* arg pointer */  }
 159
 160 #define REG_ALLOC_ORDER {                       \
 161     24,25,                                      \
 162     18,19,                                      \
 163     20,21,                                      \
 164     22,23,                                      \
 165     30,31,                                      \
 166     26,27,                                      \
 167     28,29,                                      \
 168     17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,    \
 169     0,1,                                        \
 170     32,33,34,35                                 \
 171     }
 172
 173 #define ORDER_REGS_FOR_LOCAL_ALLOC order_regs_for_local_alloc ()
 174
 175
 176 #define HARD_REGNO_NREGS(REGNO, MODE) ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
 177
 178 #define HARD_REGNO_MODE_OK(REGNO, MODE) avr_hard_regno_mode_ok(REGNO, MODE)
 179
 180 #define MODES_TIEABLE_P(MODE1, MODE2) 1
 181
 182 enum reg_class {
 183   NO_REGS,
 184   R0_REG,                       /* r0 */
 185   POINTER_X_REGS,               /* r26 - r27 */
 186   POINTER_Y_REGS,               /* r28 - r29 */
 187   POINTER_Z_REGS,               /* r30 - r31 */
 188   STACK_REG,                    /* STACK */
 189   BASE_POINTER_REGS,            /* r28 - r31 */
 190   POINTER_REGS,                 /* r26 - r31 */
 191   ADDW_REGS,                    /* r24 - r31 */
 192   SIMPLE_LD_REGS,               /* r16 - r23 */
 193   LD_REGS,                      /* r16 - r31 */
 194   NO_LD_REGS,                   /* r0 - r15 */
 195   GENERAL_REGS,                 /* r0 - r31 */
 196   ALL_REGS, LIM_REG_CLASSES
 197 };
 198
 199
 200 #define N_REG_CLASSES (int)LIM_REG_CLASSES
 201
 202 #define REG_CLASS_NAMES {                                       \
 203                  "NO_REGS",                                     \
 204                    "R0_REG",    /* r0 */                        \
 205                    "POINTER_X_REGS", /* r26 - r27 */            \
 206                    "POINTER_Y_REGS", /* r28 - r29 */            \
 207                    "POINTER_Z_REGS", /* r30 - r31 */            \
 208                    "STACK_REG", /* STACK */                     \
 209                    "BASE_POINTER_REGS", /* r28 - r31 */         \
 210                    "POINTER_REGS", /* r26 - r31 */              \
 211                    "ADDW_REGS", /* r24 - r31 */                 \
 212                    "SIMPLE_LD_REGS", /* r16 - r23 */            \
 213                    "LD_REGS",   /* r16 - r31 */                 \
 214                    "NO_LD_REGS", /* r0 - r15 */                 \
 215                    "GENERAL_REGS", /* r0 - r31 */               \
 216                    "ALL_REGS" }
 217
 218 #define REG_CLASS_CONTENTS {                                            \
 219   {0x00000000,0x00000000},      /* NO_REGS */                           \
 220   {0x00000001,0x00000000},      /* R0_REG */                            \
 221   {3 << REG_X,0x00000000},      /* POINTER_X_REGS, r26 - r27 */         \
 222   {3 << REG_Y,0x00000000},      /* POINTER_Y_REGS, r28 - r29 */         \
 223   {3 << REG_Z,0x00000000},      /* POINTER_Z_REGS, r30 - r31 */         \
 224   {0x00000000,0x00000003},      /* STACK_REG, STACK */                  \
 225   {(3 << REG_Y) | (3 << REG_Z),                                         \
 226      0x00000000},               /* BASE_POINTER_REGS, r28 - r31 */      \
 227   {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z),                          \
 228      0x00000000},               /* POINTER_REGS, r26 - r31 */           \
 229   {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z) | (3 << REG_W),           \
 230      0x00000000},               /* ADDW_REGS, r24 - r31 */              \
 231   {0x00ff0000,0x00000000},      /* SIMPLE_LD_REGS r16 - r23 */          \
 232   {(3 << REG_X)|(3 << REG_Y)|(3 << REG_Z)|(3 << REG_W)|(0xff << 16),    \
 233      0x00000000},       /* LD_REGS, r16 - r31 */                        \
 234   {0x0000ffff,0x00000000},      /* NO_LD_REGS  r0 - r15 */              \
 235   {0xffffffff,0x00000000},      /* GENERAL_REGS, r0 - r31 */            \
 236   {0xffffffff,0x00000003}       /* ALL_REGS */                          \
 237 }
 238
 239 #define REGNO_REG_CLASS(R) avr_regno_reg_class(R)
 240
 241 #define BASE_REG_CLASS (reload_completed ? BASE_POINTER_REGS : POINTER_REGS)
 242
 243 #define INDEX_REG_CLASS NO_REGS
 244
 245 #define REGNO_OK_FOR_BASE_P(r) (((r) < FIRST_PSEUDO_REGISTER            \
 246                                  && ((r) == REG_X                       \
 247                                      || (r) == REG_Y                    \
 248                                      || (r) == REG_Z                    \
 249                                      || (r) == ARG_POINTER_REGNUM))     \
 250                                 || (reg_renumber                        \
 251                                     && (reg_renumber[r] == REG_X        \
 252                                         || reg_renumber[r] == REG_Y     \
 253                                         || reg_renumber[r] == REG_Z     \
 254                                         || (reg_renumber[r]             \
 255                                             == ARG_POINTER_REGNUM))))
 256
 257 #define REGNO_OK_FOR_INDEX_P(NUM) 0
 258
 259 #define PREFERRED_RELOAD_CLASS(X, CLASS) preferred_reload_class(X,CLASS)
 260
 261 #define SMALL_REGISTER_CLASSES 1
 262
 263 #define CLASS_LIKELY_SPILLED_P(c) class_likely_spilled_p(c)
 264
 265 #define CLASS_MAX_NREGS(CLASS, MODE)   class_max_nregs (CLASS, MODE)
 266
 267 #define STACK_PUSH_CODE POST_DEC
 268
 269 #define STACK_GROWS_DOWNWARD
 270
 271 #define STARTING_FRAME_OFFSET 1
 272
 273 #define STACK_POINTER_OFFSET 1
 274
 275 #define FIRST_PARM_OFFSET(FUNDECL) 0
 276
 277 #define STACK_BOUNDARY 8
 278
 279 #define STACK_POINTER_REGNUM 32
 280
 281 #define FRAME_POINTER_REGNUM REG_Y
 282
 283 #define ARG_POINTER_REGNUM 34
 284
 285 #define STATIC_CHAIN_REGNUM 2
 286
 287 #define FRAME_POINTER_REQUIRED frame_pointer_required_p()
 288
 289 /* Offset from the frame pointer register value to the top of the stack.  */
 290 #define FRAME_POINTER_CFA_OFFSET(FNDECL) 0
 291
 292 #define ELIMINABLE_REGS {                                       \
 293       {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM},               \
 294         {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}            \
 295        ,{FRAME_POINTER_REGNUM+1,STACK_POINTER_REGNUM+1}}
 296
 297 #define CAN_ELIMINATE(FROM, TO) (((FROM) == ARG_POINTER_REGNUM             \
 298                                   && (TO) == FRAME_POINTER_REGNUM)         \
 299                                  || (((FROM) == FRAME_POINTER_REGNUM       \
 300                                       || (FROM) == FRAME_POINTER_REGNUM+1) \
 301                                      && ! FRAME_POINTER_REQUIRED           \
 302                                      ))
 303
 304 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)                    \
 305      OFFSET = initial_elimination_offset (FROM, TO)
 306
 307 #define RETURN_ADDR_RTX(count, x) \
 308   gen_rtx_MEM (Pmode, memory_address (Pmode, plus_constant (tem, 1)))
 309
 310 #define PUSH_ROUNDING(NPUSHED) (NPUSHED)
 311
 312 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
 313
 314 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) (function_arg (&(CUM), MODE, TYPE, NAMED))
 315
 316 typedef struct avr_args {
 317   int nregs;                    /* # registers available for passing */
 318   int regno;                    /* next available register number */
 319 } CUMULATIVE_ARGS;
 320
 321 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
 322   init_cumulative_args (&(CUM), FNTYPE, LIBNAME, FNDECL)
 323
 324 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)    \
 325   (function_arg_advance (&CUM, MODE, TYPE, NAMED))
 326
 327 #define FUNCTION_ARG_REGNO_P(r) function_arg_regno_p(r)
 328
 329 extern int avr_reg_order[];
 330
 331 #define RET_REGISTER avr_ret_register ()
 332
 333 #define FUNCTION_VALUE(VALTYPE, FUNC) avr_function_value (VALTYPE, FUNC)
 334
 335 #define LIBCALL_VALUE(MODE)  avr_libcall_value (MODE)
 336
 337 #define FUNCTION_VALUE_REGNO_P(N) ((int) (N) == RET_REGISTER)
 338
 339 #define DEFAULT_PCC_STRUCT_RETURN 0
 340
 341 #define EPILOGUE_USES(REGNO) 0
 342
 343 #define HAVE_POST_INCREMENT 1
 344 #define HAVE_PRE_DECREMENT 1
 345
 346 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
 347
 348 #define MAX_REGS_PER_ADDRESS 1
 349
 350 #ifdef REG_OK_STRICT
 351 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 352 {                                                       \
 353   if (legitimate_address_p (mode, operand, 1))          \
 354     goto ADDR;                                          \
 355 }
 356 #  else
 357 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 358 {                                                       \
 359   if (legitimate_address_p (mode, operand, 0))          \
 360     goto ADDR;                                          \
 361 }
 362 #endif
 363
 364 #define REG_OK_FOR_BASE_NOSTRICT_P(X) \
 365   (REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X))
 366
 367 #define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
 368
 369 #ifdef REG_OK_STRICT
 370 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X)
 371 #else
 372 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NOSTRICT_P (X)
 373 #endif
 374
 375 #define REG_OK_FOR_INDEX_P(X) 0
 376
 377 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN)                          \
 378 {                                                                       \
 379   (X) = legitimize_address (X, OLDX, MODE);                             \
 380   if (memory_address_p (MODE, X))                                       \
 381     goto WIN;                                                           \
 382 }
 383
 384 #define XEXP_(X,Y) (X)
 385 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN)    \
 386 do {                                                                        \
 387   if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC))     \
 388     {                                                                       \
 389       push_reload (XEXP (X,0), XEXP (X,0), &XEXP (X,0), &XEXP (X,0),        \
 390                    POINTER_REGS, GET_MODE (X),GET_MODE (X) , 0, 0,          \
 391                    OPNUM, RELOAD_OTHER);                                    \
 392       goto WIN;                                                             \
 393     }                                                                       \
 394   if (GET_CODE (X) == PLUS                                                  \
 395       && REG_P (XEXP (X, 0))                                                \
 396       && GET_CODE (XEXP (X, 1)) == CONST_INT                                \
 397       && INTVAL (XEXP (X, 1)) >= 1)                                         \
 398     {                                                                       \
 399       int fit = INTVAL (XEXP (X, 1)) <= (64 - GET_MODE_SIZE (MODE));        \
 400       if (fit)                                                              \
 401         {                                                                   \
 402           if (reg_equiv_address[REGNO (XEXP (X, 0))] != 0)                  \
 403             {                                                               \
 404               int regno = REGNO (XEXP (X, 0));                              \
 405               rtx mem = make_memloc (X, regno);                             \
 406               push_reload (XEXP (mem,0), NULL, &XEXP (mem,0), NULL,         \
 407                            POINTER_REGS, Pmode, VOIDmode, 0, 0,             \
 408                            1, ADDR_TYPE (TYPE));                            \
 409               push_reload (mem, NULL_RTX, &XEXP (X, 0), NULL,               \
 410                            BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
 411                            OPNUM, TYPE);                                    \
 412               goto WIN;                                                     \
 413             }                                                               \
 414           push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL,           \
 415                        BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,     \
 416                        OPNUM, TYPE);                                        \
 417           goto WIN;                                                         \
 418         }                                                                   \
 419       else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
 420         {                                                                   \
 421           push_reload (X, NULL_RTX, &X, NULL,                               \
 422                        POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,          \
 423                        OPNUM, TYPE);                                        \
 424           goto WIN;                                                         \
 425         }                                                                   \
 426     }                                                                       \
 427 } while(0)
 428
 429 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
 430
 431 #define LEGITIMATE_CONSTANT_P(X) 1
 432
 433 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
 434                                             : (TO) == STACK_REG ? 12 \
 435                                             : 2)
 436
 437 #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 :   \
 438                                          (MODE)==HImode ? 4 :   \
 439                                          (MODE)==SImode ? 8 :   \
 440                                          (MODE)==SFmode ? 8 : 16)
 441
 442 #define BRANCH_COST 0
 443
 444 #define SLOW_BYTE_ACCESS 0
 445
 446 #define NO_FUNCTION_CSE
 447
 448 #define TEXT_SECTION_ASM_OP "\t.text"
 449
 450 #define DATA_SECTION_ASM_OP "\t.data"
 451
 452 #define BSS_SECTION_ASM_OP "\t.section .bss"
 453
 454 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
 455    There are no shared libraries on this target, and these sections are
 456    placed in the read-only program memory, so they are not writable.  */
 457
 458 #undef CTORS_SECTION_ASM_OP
 459 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"a\",@progbits"
 460
 461 #undef DTORS_SECTION_ASM_OP
 462 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits"
 463
 464 #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor
 465
 466 #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
 467
 468 #define JUMP_TABLES_IN_TEXT_SECTION 0
 469
 470 #define ASM_COMMENT_START " ; "
 471
 472 #define ASM_APP_ON "/* #APP */\n"
 473
 474 #define ASM_APP_OFF "/* #NOAPP */\n"
 475
 476 /* Switch into a generic section.  */
 477 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
 478 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
 479
 480 #define ASM_OUTPUT_ASCII(FILE, P, SIZE)  gas_output_ascii (FILE,P,SIZE)
 481
 482 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C) ((C) == '\n'                    \
 483                                           || ((C) == '$'))
 484
 485 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)                     \
 486 do {                                                                       \
 487      fputs ("\t.comm ", (STREAM));                                         \
 488      assemble_name ((STREAM), (NAME));                                     \
 489      fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE));                \
 490 } while (0)
 491
 492 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED)                 \
 493   asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
 494
 495 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED)                   \
 496 do {                                                                    \
 497      fputs ("\t.lcomm ", (STREAM));                                     \
 498      assemble_name ((STREAM), (NAME));                                  \
 499      fprintf ((STREAM), ",%d\n", (int)(SIZE));                          \
 500 } while (0)
 501
 502 #undef TYPE_ASM_OP
 503 #undef SIZE_ASM_OP
 504 #undef WEAK_ASM_OP
 505 #define TYPE_ASM_OP     "\t.type\t"
 506 #define SIZE_ASM_OP     "\t.size\t"
 507 #define WEAK_ASM_OP     "\t.weak\t"
 508 /* Define the strings used for the special svr4 .type and .size directives.
 509    These strings generally do not vary from one system running svr4 to
 510    another, but if a given system (e.g. m88k running svr) needs to use
 511    different pseudo-op names for these, they may be overridden in the
 512    file which includes this one.  */
 513
 514
 515 #undef TYPE_OPERAND_FMT
 516 #define TYPE_OPERAND_FMT        "@%s"
 517 /* The following macro defines the format used to output the second
 518    operand of the .type assembler directive.  Different svr4 assemblers
 519    expect various different forms for this operand.  The one given here
 520    is just a default.  You may need to override it in your machine-
 521    specific tm.h file (depending upon the particulars of your assembler).  */
 522
 523 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 524 do {                                                            \
 525      ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");        \
 526      ASM_OUTPUT_LABEL (FILE, NAME);                             \
 527 } while (0)
 528
 529 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                    \
 530   do {                                                                  \
 531     if (!flag_inhibit_size_directive)                                   \
 532       ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                           \
 533   } while (0)
 534
 535 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 536 do {                                                                    \
 537   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");                     \
 538   size_directive_output = 0;                                            \
 539   if (!flag_inhibit_size_directive && DECL_SIZE (DECL))                 \
 540     {                                                                   \
 541       size_directive_output = 1;                                        \
 542       ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME,                            \
 543                                  int_size_in_bytes (TREE_TYPE (DECL))); \
 544     }                                                                   \
 545   ASM_OUTPUT_LABEL(FILE, NAME);                                         \
 546 } while (0)
 547
 548 #undef ASM_FINISH_DECLARE_OBJECT
 549 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 550 do {                                                                     \
 551      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 552      HOST_WIDE_INT size;                                                 \
 553      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 554          && ! AT_END && TOP_LEVEL                                        \
 555          && DECL_INITIAL (DECL) == error_mark_node                       \
 556          && !size_directive_output)                                      \
 557        {                                                                 \
 558          size_directive_output = 1;                                      \
 559          size = int_size_in_bytes (TREE_TYPE (DECL));                    \
 560          ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size);                   \
 561        }                                                                 \
 562    } while (0)
 563
 564
 565 #define ESCAPES \
 566 "\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\
 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\
 569 \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\
 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 \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"
 574 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
 575    ASM_OUTPUT_LIMITED_STRING macros.  Each byte in the table
 576    corresponds to a particular byte value [0..255].  For any
 577    given byte value, if the value in the corresponding table
 578    position is zero, the given character can be output directly.
 579    If the table value is 1, the byte must be output as a \ooo
 580    octal escape.  If the tables value is anything else, then the
 581    byte value should be output as a \ followed by the value
 582    in the table.  Note that we can use standard UN*X escape
 583    sequences for many control characters, but we don't use
 584    \a to represent BEL because some svr4 assemblers (e.g. on
 585    the i386) don't know about that.  Also, we don't use \v
 586    since some versions of gas, such as 2.2 did not accept it.  */
 587
 588 #define STRING_LIMIT    ((unsigned) 64)
 589 #define STRING_ASM_OP   "\t.string\t"
 590 /* Some svr4 assemblers have a limit on the number of characters which
 591    can appear in the operand of a .string directive.  If your assembler
 592    has such a limitation, you should define STRING_LIMIT to reflect that
 593    limit.  Note that at least some svr4 assemblers have a limit on the
 594    actual number of bytes in the double-quoted string, and that they
 595    count each character in an escape sequence as one byte.  Thus, an
 596    escape sequence like \377 would count as four bytes.
 597
 598    If your target assembler doesn't support the .string directive, you
 599    should define this to zero.  */
 600
 601 /* Globalizing directive for a label.  */
 602 #define GLOBAL_ASM_OP ".global\t"
 603
 604 #define SET_ASM_OP      "\t.set\t"
 605
 606 #define ASM_WEAKEN_LABEL(FILE, NAME)    \
 607   do                                    \
 608     {                                   \
 609       fputs ("\t.weak\t", (FILE));      \
 610       assemble_name ((FILE), (NAME));   \
 611       fputc ('\n', (FILE));             \
 612     }                                   \
 613   while (0)
 614
 615 #define SUPPORTS_WEAK 1
 616
 617 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)        \
 618 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
 619
 620 #define HAS_INIT_SECTION 1
 621
 622 #define REGISTER_NAMES {                                \
 623   "r0","r1","r2","r3","r4","r5","r6","r7",              \
 624     "r8","r9","r10","r11","r12","r13","r14","r15",      \
 625     "r16","r17","r18","r19","r20","r21","r22","r23",    \
 626     "r24","r25","r26","r27","r28","r29","r30","r31",    \
 627     "__SPL__","__SPH__","argL","argH"}
 628
 629 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
 630
 631 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
 632
 633 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~')
 634
 635 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
 636
 637 #define USER_LABEL_PREFIX ""
 638
 639 #define ASSEMBLER_DIALECT AVR_HAVE_MOVW
 640
 641 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO)      \
 642 {                                               \
 643   gcc_assert (REGNO < 32);                      \
 644   fprintf (STREAM, "\tpush\tr%d", REGNO);       \
 645 }
 646
 647 #define ASM_OUTPUT_REG_POP(STREAM, REGNO)       \
 648 {                                               \
 649   gcc_assert (REGNO < 32);                      \
 650   fprintf (STREAM, "\tpop\tr%d", REGNO);        \
 651 }
 652
 653 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)          \
 654   avr_output_addr_vec_elt(STREAM, VALUE)
 655
 656 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
 657   (switch_to_section (progmem_section), \
 658    (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
 659
 660 #define ASM_OUTPUT_SKIP(STREAM, N)              \
 661 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
 662
 663 #define ASM_OUTPUT_ALIGN(STREAM, POWER)
 664
 665 #define CASE_VECTOR_MODE HImode
 666
 667 extern int avr_case_values_threshold;
 668
 669 #define CASE_VALUES_THRESHOLD avr_case_values_threshold
 670
 671 #undef WORD_REGISTER_OPERATIONS
 672
 673 #define MOVE_MAX 4
 674
 675 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
 676
 677 #define Pmode HImode
 678
 679 #define FUNCTION_MODE HImode
 680
 681 #define DOLLARS_IN_IDENTIFIERS 0
 682
 683 #define NO_DOLLAR_IN_LABEL 1
 684
 685 #define TRAMPOLINE_TEMPLATE(FILE) \
 686   internal_error ("trampolines not supported")
 687
 688 #define TRAMPOLINE_SIZE 4
 689
 690 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT)                             \
 691 {                                                                             \
 692   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT);    \
 693   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
 694 }
 695 /* Store in cc_status the expressions
 696    that the condition codes will describe
 697    after execution of an instruction whose pattern is EXP.
 698    Do not alter them if the instruction would not alter the cc's.  */
 699
 700 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
 701
 702 /* The add insns don't set overflow in a usable way.  */
 703 #define CC_OVERFLOW_UNUSABLE 01000
 704 /* The mov,and,or,xor insns don't set carry.  That's ok though as the
 705    Z bit is all we need when doing unsigned comparisons on the result of
 706    these insns (since they're always with 0).  However, conditions.h has
 707    CC_NO_OVERFLOW defined for this purpose.  Rename it to something more
 708    understandable.  */
 709 #define CC_NO_CARRY CC_NO_OVERFLOW
 710
 711
 712 /* Output assembler code to FILE to increment profiler label # LABELNO
 713    for profiling a function entry.  */
 714
 715 #define FUNCTION_PROFILER(FILE, LABELNO)  \
 716   fprintf (FILE, "/* profiler %d */", (LABELNO))
 717
 718 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
 719                                           adjust_insn_length (INSN, LENGTH))
 720
 721 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
 722
 723 #define CC1_SPEC "%{profile:-p}"
 724
 725 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
 726     %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
 727     %{!fexceptions:-fno-exceptions}"
 728 /* A C string constant that tells the GCC drvier program options to
 729    pass to `cc1plus'.  */
 730
 731 #define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;\
 732 mmcu=*:-mmcu=%*}"
 733
 734 #define LINK_SPEC " %{!mmcu*:-m avr2}\
 735 %{mmcu=at90s1200|\
 736   mmcu=attiny11|\
 737   mmcu=attiny12|\
 738   mmcu=attiny15|\
 739   mmcu=attiny28:-m avr1}\
 740 %{mmcu=attiny22|\
 741   mmcu=attiny26|\
 742   mmcu=at90s2*|\
 743   mmcu=at90s4*|\
 744   mmcu=at90s8*|\
 745   mmcu=at90c8*|\
 746   mmcu=at86rf401|\
 747   mmcu=attiny13|\
 748   mmcu=attiny2313|\
 749   mmcu=attiny24|\
 750   mmcu=attiny25|\
 751   mmcu=attiny261|\
 752   mmcu=attiny4*|\
 753   mmcu=attiny8*:-m avr2}\
 754 %{mmcu=atmega103|\
 755   mmcu=atmega603|\
 756   mmcu=at43*|\
 757   mmcu=at76*:-m avr3}\
 758 %{mmcu=atmega8*|\
 759   mmcu=atmega48|\
 760   mmcu=at90pwm1|\
 761   mmcu=at90pwm2|\
 762   mmcu=at90pwm3:-m avr4}\
 763 %{mmcu=atmega16*|\
 764   mmcu=atmega32*|\
 765   mmcu=atmega406|\
 766   mmcu=atmega64*|\
 767   mmcu=atmega128*|\
 768   mmcu=at90can*|\
 769   mmcu=at90usb*|\
 770   mmcu=at94k:-m avr5}\
 771 %{mmcu=atmega324*|\
 772   mmcu=atmega325|\
 773   mmcu=atmega3250|\
 774   mmcu=atmega329|\
 775   mmcu=atmega3290|\
 776   mmcu=atmega406|\
 777   mmcu=atmega48|\
 778   mmcu=atmega88|\
 779   mmcu=atmega64|\
 780   mmcu=atmega644*|\
 781   mmcu=atmega645|\
 782   mmcu=atmega6450|\
 783   mmcu=atmega649|\
 784   mmcu=atmega6490|\
 785   mmcu=atmega128|\
 786   mmcu=atmega162|\
 787   mmcu=atmega164*|\
 788   mmcu=atmega165*|\
 789   mmcu=atmega168|\
 790   mmcu=atmega169*|\
 791   mmcu=at90can*|\
 792   mmcu=at90pwm*|\
 793   mmcu=at90usb*: -Tdata 0x800100}\
 794 %{mmcu=atmega640|\
 795   mmcu=atmega1280|\
 796   mmcu=atmega1281: -Tdata 0x800200} "
 797
 798 #define LIB_SPEC \
 799   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
 800
 801 #define LIBSTDCXX "-lgcc"
 802 /* No libstdc++ for now.  Empty string doesn't work.  */
 803
 804 #define LIBGCC_SPEC \
 805   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
 806
 807 #define STARTFILE_SPEC "%(crt_binutils)"
 808
 809 #define ENDFILE_SPEC ""
 810
 811 #define CRT_BINUTILS_SPECS "\
 812 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
 813 %{mmcu=attiny11:crttn11.o%s} \
 814 %{mmcu=attiny12:crttn12.o%s} \
 815 %{mmcu=attiny15:crttn15.o%s} \
 816 %{mmcu=attiny28:crttn28.o%s} \
 817 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
 818 %{mmcu=at90s2313:crts2313.o%s} \
 819 %{mmcu=at90s2323:crts2323.o%s} \
 820 %{mmcu=at90s2333:crts2333.o%s} \
 821 %{mmcu=at90s2343:crts2343.o%s} \
 822 %{mmcu=attiny22:crttn22.o%s} \
 823 %{mmcu=attiny26:crttn26.o%s} \
 824 %{mmcu=at90s4433:crts4433.o%s} \
 825 %{mmcu=at90s4414:crts4414.o%s} \
 826 %{mmcu=at90s4434:crts4434.o%s} \
 827 %{mmcu=at90c8534:crtc8534.o%s} \
 828 %{mmcu=at90s8535:crts8535.o%s} \
 829 %{mmcu=at86rf401:crt86401.o%s} \
 830 %{mmcu=attiny13:crttn13.o%s} \
 831 %{mmcu=attiny2313|mmcu=avr25:crttn2313.o%s} \
 832 %{mmcu=attiny24:crttn24.o%s} \
 833 %{mmcu=attiny44:crttn44.o%s} \
 834 %{mmcu=attiny84:crttn84.o%s} \
 835 %{mmcu=attiny25:crttn25.o%s} \
 836 %{mmcu=attiny45:crttn45.o%s} \
 837 %{mmcu=attiny85:crttn85.o%s} \
 838 %{mmcu=attiny261:crttn261.o%s} \
 839 %{mmcu=attiny461:crttn461.o%s} \
 840 %{mmcu=attiny861:crttn861.o%s} \
 841 %{mmcu=atmega103|mmcu=avr3:crtm103.o%s} \
 842 %{mmcu=atmega603:crtm603.o%s} \
 843 %{mmcu=at43usb320:crt43320.o%s} \
 844 %{mmcu=at43usb355:crt43355.o%s} \
 845 %{mmcu=at76c711:crt76711.o%s} \
 846 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
 847 %{mmcu=atmega48:crtm48.o%s} \
 848 %{mmcu=atmega88:crtm88.o%s} \
 849 %{mmcu=atmega8515:crtm8515.o%s} \
 850 %{mmcu=atmega8535:crtm8535.o%s} \
 851 %{mmcu=at90pwm1:crt90pwm1.o%s} \
 852 %{mmcu=at90pwm2:crt90pwm2.o%s} \
 853 %{mmcu=at90pwm3:crt90pwm3.o%s} \
 854 %{mmcu=atmega16:crtm16.o%s} \
 855 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
 856 %{mmcu=atmega162:crtm162.o%s} \
 857 %{mmcu=atmega163:crtm163.o%s} \
 858 %{mmcu=atmega164p:crtm164p.o%s} \
 859 %{mmcu=atmega165:crtm165.o%s} \
 860 %{mmcu=atmega165p:crtm165p.o%s} \
 861 %{mmcu=atmega168:crtm168.o%s} \
 862 %{mmcu=atmega169:crtm169.o%s} \
 863 %{mmcu=atmega169p:crtm169p.o%s} \
 864 %{mmcu=atmega32:crtm32.o%s} \
 865 %{mmcu=atmega323:crtm323.o%s} \
 866 %{mmcu=atmega324p:crtm324p.o%s} \
 867 %{mmcu=atmega325:crtm325.o%s} \
 868 %{mmcu=atmega3250:crtm3250.o%s} \
 869 %{mmcu=atmega329:crtm329.o%s} \
 870 %{mmcu=atmega3290:crtm3290.o%s} \
 871 %{mmcu=atmega406:crtm406.o%s} \
 872 %{mmcu=atmega64:crtm64.o%s} \
 873 %{mmcu=atmega640:crtm640.o%s} \
 874 %{mmcu=atmega644:crtm644.o%s} \
 875 %{mmcu=atmega644p:crtm644p.o%s} \
 876 %{mmcu=atmega645:crtm645.o%s} \
 877 %{mmcu=atmega6450:crtm6450.o%s} \
 878 %{mmcu=atmega649:crtm649.o%s} \
 879 %{mmcu=atmega6490:crtm6490.o%s} \
 880 %{mmcu=atmega128:crtm128.o%s} \
 881 %{mmcu=atmega1280:crtm1280.o%s} \
 882 %{mmcu=atmega1281:crtm1281.o%s} \
 883 %{mmcu=at90can32:crtcan32.o%s} \
 884 %{mmcu=at90can64:crtcan64.o%s} \
 885 %{mmcu=at90can128:crtcan128.o%s} \
 886 %{mmcu=at90usb646:crtusb646.o%s} \
 887 %{mmcu=at90usb647:crtusb647.o%s} \
 888 %{mmcu=at90usb1286:crtusb1286.o%s} \
 889 %{mmcu=at90usb1287:crtusb1287.o%s} \
 890 %{mmcu=at94k:crtat94k.o%s}"
 891
 892 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
 893
 894 /* This is the default without any -mmcu=* option (AT90S*).  */
 895 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
 896
 897 /* This is undefined macro for collect2 disabling */
 898 #define LINKER_NAME "ld"
 899
 900 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
 901   TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
 902
 903 /* Note that the other files fail to use these
 904    in some of the places where they should.  */
 905
 906 #if defined(__STDC__) || defined(ALMOST_STDC)
 907 #define AS2(a,b,c) #a " " #b "," #c
 908 #define AS2C(b,c) " " #b "," #c
 909 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
 910 #define AS1(a,b) #a " " #b
 911 #else
 912 #define AS1(a,b) "a     b"
 913 #define AS2(a,b,c) "a   b,c"
 914 #define AS2C(b,c) " b,c"
 915 #define AS3(a,b,c,d) "a b,c,d"
 916 #endif
 917 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
 918 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
 919 #define CR_TAB "\n\t"
 920
 921 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
 922
 923 #define DWARF2_DEBUGGING_INFO 1
 924
 925 #define OBJECT_FORMAT_ELF