gomp-20050608-branch/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
   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_asm_only_p)                       \
  35         builtin_define ("__AVR_ASM_ONLY__");    \
  36       if (avr_enhanced_p)                       \
  37         builtin_define ("__AVR_ENHANCED__");    \
  38       if (avr_mega_p)                           \
  39         builtin_define ("__AVR_MEGA__");        \
  40       if (TARGET_NO_INTERRUPTS)                 \
  41         builtin_define ("__NO_INTERRUPTS__");   \
  42     }                                           \
  43   while (0)
  44
  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 #ifndef IN_LIBGCC2
  51 extern GTY(()) section *progmem_section;
  52 #endif
  53
  54 #define AVR_MEGA (avr_mega_p && !TARGET_SHORT_CALLS)
  55 #define AVR_ENHANCED (avr_enhanced_p)
  56
  57 #define TARGET_VERSION fprintf (stderr, " (GNU assembler syntax)");
  58
  59 #define OVERRIDE_OPTIONS avr_override_options ()
  60
  61 #define CAN_DEBUG_WITHOUT_FP
  62
  63 #define BITS_BIG_ENDIAN 0
  64 #define BYTES_BIG_ENDIAN 0
  65 #define WORDS_BIG_ENDIAN 0
  66
  67 #ifdef IN_LIBGCC2
  68 /* This is to get correct SI and DI modes in libgcc2.c (32 and 64 bits).  */
  69 #define UNITS_PER_WORD 4
  70 #else
  71 /* Width of a word, in units (bytes).  */
  72 #define UNITS_PER_WORD 1
  73 #endif
  74
  75 #define POINTER_SIZE 16
  76
  77
  78 /* Maximum sized of reasonable data type
  79    DImode or Dfmode ...  */
  80 #define MAX_FIXED_MODE_SIZE 32
  81
  82 #define PARM_BOUNDARY 8
  83
  84 #define FUNCTION_BOUNDARY 8
  85
  86 #define EMPTY_FIELD_BOUNDARY 8
  87
  88 /* No data type wants to be aligned rounder than this.  */
  89 #define BIGGEST_ALIGNMENT 8
  90
  91
  92 #define STRICT_ALIGNMENT 0
  93
  94 #define INT_TYPE_SIZE (TARGET_INT8 ? 8 : 16)
  95 #define SHORT_TYPE_SIZE (INT_TYPE_SIZE == 8 ? INT_TYPE_SIZE : 16)
  96 #define LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 16 : 32)
  97 #define LONG_LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 32 : 64)
  98 #define FLOAT_TYPE_SIZE 32
  99 #define DOUBLE_TYPE_SIZE 32
 100 #define LONG_DOUBLE_TYPE_SIZE 32
 101
 102 #define DEFAULT_SIGNED_CHAR 1
 103
 104 #define SIZE_TYPE (INT_TYPE_SIZE == 8 ? "long unsigned int" : "unsigned int")
 105 #define PTRDIFF_TYPE (INT_TYPE_SIZE == 8 ? "long int" :"int")
 106
 107 #define WCHAR_TYPE_SIZE 16
 108
 109 #define FIRST_PSEUDO_REGISTER 36
 110
 111 #define FIXED_REGISTERS {\
 112   1,1,/* r0 r1 */\
 113   0,0,/* r2 r3 */\
 114   0,0,/* r4 r5 */\
 115   0,0,/* r6 r7 */\
 116   0,0,/* r8 r9 */\
 117   0,0,/* r10 r11 */\
 118   0,0,/* r12 r13 */\
 119   0,0,/* r14 r15 */\
 120   0,0,/* r16 r17 */\
 121   0,0,/* r18 r19 */\
 122   0,0,/* r20 r21 */\
 123   0,0,/* r22 r23 */\
 124   0,0,/* r24 r25 */\
 125   0,0,/* r26 r27 */\
 126   0,0,/* r28 r29 */\
 127   0,0,/* r30 r31 */\
 128   1,1,/*  STACK */\
 129   1,1 /* arg pointer */  }
 130
 131 #define CALL_USED_REGISTERS {                   \
 132   1,1,/* r0 r1 */                               \
 133     0,0,/* r2 r3 */                             \
 134     0,0,/* r4 r5 */                             \
 135     0,0,/* r6 r7 */                             \
 136     0,0,/* r8 r9 */                             \
 137     0,0,/* r10 r11 */                           \
 138     0,0,/* r12 r13 */                           \
 139     0,0,/* r14 r15 */                           \
 140     0,0,/* r16 r17 */                           \
 141     1,1,/* r18 r19 */                           \
 142     1,1,/* r20 r21 */                           \
 143     1,1,/* r22 r23 */                           \
 144     1,1,/* r24 r25 */                           \
 145     1,1,/* r26 r27 */                           \
 146     0,0,/* r28 r29 */                           \
 147     1,1,/* r30 r31 */                           \
 148     1,1,/*  STACK */                            \
 149     1,1 /* arg pointer */  }
 150
 151 #define REG_ALLOC_ORDER {                       \
 152     24,25,                                      \
 153     18,19,                                      \
 154     20,21,                                      \
 155     22,23,                                      \
 156     30,31,                                      \
 157     26,27,                                      \
 158     28,29,                                      \
 159     17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,    \
 160     0,1,                                        \
 161     32,33,34,35                                 \
 162     }
 163
 164 #define ORDER_REGS_FOR_LOCAL_ALLOC order_regs_for_local_alloc ()
 165
 166
 167 #define HARD_REGNO_NREGS(REGNO, MODE) ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
 168
 169 #define HARD_REGNO_MODE_OK(REGNO, MODE) avr_hard_regno_mode_ok(REGNO, MODE)
 170
 171 #define MODES_TIEABLE_P(MODE1, MODE2) 1
 172
 173 enum reg_class {
 174   NO_REGS,
 175   R0_REG,                       /* r0 */
 176   POINTER_X_REGS,               /* r26 - r27 */
 177   POINTER_Y_REGS,               /* r28 - r29 */
 178   POINTER_Z_REGS,               /* r30 - r31 */
 179   STACK_REG,                    /* STACK */
 180   BASE_POINTER_REGS,            /* r28 - r31 */
 181   POINTER_REGS,                 /* r26 - r31 */
 182   ADDW_REGS,                    /* r24 - r31 */
 183   SIMPLE_LD_REGS,               /* r16 - r23 */
 184   LD_REGS,                      /* r16 - r31 */
 185   NO_LD_REGS,                   /* r0 - r15 */
 186   GENERAL_REGS,                 /* r0 - r31 */
 187   ALL_REGS, LIM_REG_CLASSES
 188 };
 189
 190
 191 #define N_REG_CLASSES (int)LIM_REG_CLASSES
 192
 193 #define REG_CLASS_NAMES {                                       \
 194                  "NO_REGS",                                     \
 195                    "R0_REG",    /* r0 */                        \
 196                    "POINTER_X_REGS", /* r26 - r27 */            \
 197                    "POINTER_Y_REGS", /* r28 - r29 */            \
 198                    "POINTER_Z_REGS", /* r30 - r31 */            \
 199                    "STACK_REG", /* STACK */                     \
 200                    "BASE_POINTER_REGS", /* r28 - r31 */         \
 201                    "POINTER_REGS", /* r26 - r31 */              \
 202                    "ADDW_REGS", /* r24 - r31 */                 \
 203                    "SIMPLE_LD_REGS", /* r16 - r23 */            \
 204                    "LD_REGS",   /* r16 - r31 */                 \
 205                    "NO_LD_REGS", /* r0 - r15 */                 \
 206                    "GENERAL_REGS", /* r0 - r31 */               \
 207                    "ALL_REGS" }
 208
 209 #define REG_X 26
 210 #define REG_Y 28
 211 #define REG_Z 30
 212 #define REG_W 24
 213
 214 #define REG_CLASS_CONTENTS {                                            \
 215   {0x00000000,0x00000000},      /* NO_REGS */                           \
 216   {0x00000001,0x00000000},      /* R0_REG */                            \
 217   {3 << REG_X,0x00000000},      /* POINTER_X_REGS, r26 - r27 */         \
 218   {3 << REG_Y,0x00000000},      /* POINTER_Y_REGS, r28 - r29 */         \
 219   {3 << REG_Z,0x00000000},      /* POINTER_Z_REGS, r30 - r31 */         \
 220   {0x00000000,0x00000003},      /* STACK_REG, STACK */                  \
 221   {(3 << REG_Y) | (3 << REG_Z),                                         \
 222      0x00000000},               /* BASE_POINTER_REGS, r28 - r31 */      \
 223   {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z),                          \
 224      0x00000000},               /* POINTER_REGS, r26 - r31 */           \
 225   {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z) | (3 << REG_W),           \
 226      0x00000000},               /* ADDW_REGS, r24 - r31 */              \
 227   {0x00ff0000,0x00000000},      /* SIMPLE_LD_REGS r16 - r23 */          \
 228   {(3 << REG_X)|(3 << REG_Y)|(3 << REG_Z)|(3 << REG_W)|(0xff << 16),    \
 229      0x00000000},       /* LD_REGS, r16 - r31 */                        \
 230   {0x0000ffff,0x00000000},      /* NO_LD_REGS  r0 - r15 */              \
 231   {0xffffffff,0x00000000},      /* GENERAL_REGS, r0 - r31 */            \
 232   {0xffffffff,0x00000003}       /* ALL_REGS */                          \
 233 }
 234
 235 #define REGNO_REG_CLASS(R) avr_regno_reg_class(R)
 236
 237 #define BASE_REG_CLASS (reload_completed ? BASE_POINTER_REGS : POINTER_REGS)
 238
 239 #define INDEX_REG_CLASS NO_REGS
 240
 241 #define REG_CLASS_FROM_LETTER(C) avr_reg_class_from_letter(C)
 242
 243 #define REGNO_OK_FOR_BASE_P(r) (((r) < FIRST_PSEUDO_REGISTER            \
 244                                  && ((r) == REG_X                       \
 245                                      || (r) == REG_Y                    \
 246                                      || (r) == REG_Z                    \
 247                                      || (r) == ARG_POINTER_REGNUM))     \
 248                                 || (reg_renumber                        \
 249                                     && (reg_renumber[r] == REG_X        \
 250                                         || reg_renumber[r] == REG_Y     \
 251                                         || reg_renumber[r] == REG_Z     \
 252                                         || (reg_renumber[r]             \
 253                                             == ARG_POINTER_REGNUM))))
 254
 255 #define REGNO_OK_FOR_INDEX_P(NUM) 0
 256
 257 #define PREFERRED_RELOAD_CLASS(X, CLASS) preferred_reload_class(X,CLASS)
 258
 259 #define SMALL_REGISTER_CLASSES 1
 260
 261 #define CLASS_LIKELY_SPILLED_P(c) class_likely_spilled_p(c)
 262
 263 #define CLASS_MAX_NREGS(CLASS, MODE)   class_max_nregs (CLASS, MODE)
 264
 265 #define CONST_OK_FOR_LETTER_P(VALUE, C)                         \
 266   ((C) == 'I' ? (VALUE) >= 0 && (VALUE) <= 63 :                 \
 267    (C) == 'J' ? (VALUE) <= 0 && (VALUE) >= -63:                 \
 268    (C) == 'K' ? (VALUE) == 2 :                                  \
 269    (C) == 'L' ? (VALUE) == 0 :                                  \
 270    (C) == 'M' ? (VALUE) >= 0 && (VALUE) <= 0xff :               \
 271    (C) == 'N' ? (VALUE) == -1:                                  \
 272    (C) == 'O' ? (VALUE) == 8 || (VALUE) == 16 || (VALUE) == 24: \
 273    (C) == 'P' ? (VALUE) == 1 :                                  \
 274    0)
 275
 276 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
 277   ((C) == 'G' ? (VALUE) == CONST0_RTX (SFmode)  \
 278    : 0)
 279
 280 #define EXTRA_CONSTRAINT(x, c) extra_constraint(x, c)
 281
 282 #define STACK_PUSH_CODE POST_DEC
 283
 284 #define STACK_GROWS_DOWNWARD
 285
 286 #define STARTING_FRAME_OFFSET 1
 287
 288 #define STACK_POINTER_OFFSET 1
 289
 290 #define FIRST_PARM_OFFSET(FUNDECL) 0
 291
 292 #define STACK_BOUNDARY 8
 293
 294 #define STACK_POINTER_REGNUM 32
 295
 296 #define FRAME_POINTER_REGNUM REG_Y
 297
 298 #define ARG_POINTER_REGNUM 34
 299
 300 #define STATIC_CHAIN_REGNUM 2
 301
 302 #define FRAME_POINTER_REQUIRED frame_pointer_required_p()
 303
 304 #define ELIMINABLE_REGS {                                       \
 305       {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM},               \
 306         {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}            \
 307        ,{FRAME_POINTER_REGNUM+1,STACK_POINTER_REGNUM+1}}
 308
 309 #define CAN_ELIMINATE(FROM, TO) (((FROM) == ARG_POINTER_REGNUM             \
 310                                   && (TO) == FRAME_POINTER_REGNUM)         \
 311                                  || (((FROM) == FRAME_POINTER_REGNUM       \
 312                                       || (FROM) == FRAME_POINTER_REGNUM+1) \
 313                                      && ! FRAME_POINTER_REQUIRED           \
 314                                      ))
 315
 316 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)                    \
 317      OFFSET = initial_elimination_offset (FROM, TO)
 318
 319 #define RETURN_ADDR_RTX(count, x) \
 320   gen_rtx_MEM (Pmode, memory_address (Pmode, plus_constant (tem, 1)))
 321
 322 #define PUSH_ROUNDING(NPUSHED) (NPUSHED)
 323
 324 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
 325
 326 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) (function_arg (&(CUM), MODE, TYPE, NAMED))
 327
 328 typedef struct avr_args {
 329   int nregs;                    /* # registers available for passing */
 330   int regno;                    /* next available register number */
 331 } CUMULATIVE_ARGS;
 332
 333 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
 334   init_cumulative_args (&(CUM), FNTYPE, LIBNAME, FNDECL)
 335
 336 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)    \
 337   (function_arg_advance (&CUM, MODE, TYPE, NAMED))
 338
 339 #define FUNCTION_ARG_REGNO_P(r) function_arg_regno_p(r)
 340
 341 extern int avr_reg_order[];
 342
 343 #define RET_REGISTER avr_ret_register ()
 344
 345 #define FUNCTION_VALUE(VALTYPE, FUNC) avr_function_value (VALTYPE, FUNC)
 346
 347 #define LIBCALL_VALUE(MODE)  avr_libcall_value (MODE)
 348
 349 #define FUNCTION_VALUE_REGNO_P(N) ((int) (N) == RET_REGISTER)
 350
 351 #define DEFAULT_PCC_STRUCT_RETURN 0
 352
 353 #define EPILOGUE_USES(REGNO) 0
 354
 355 #define HAVE_POST_INCREMENT 1
 356 #define HAVE_PRE_DECREMENT 1
 357
 358 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
 359
 360 #define MAX_REGS_PER_ADDRESS 1
 361
 362 #ifdef REG_OK_STRICT
 363 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 364 {                                                       \
 365   if (legitimate_address_p (mode, operand, 1))          \
 366     goto ADDR;                                          \
 367 }
 368 #  else
 369 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 370 {                                                       \
 371   if (legitimate_address_p (mode, operand, 0))          \
 372     goto ADDR;                                          \
 373 }
 374 #endif
 375
 376 #define REG_OK_FOR_BASE_NOSTRICT_P(X) \
 377   (REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X))
 378
 379 #define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
 380
 381 #ifdef REG_OK_STRICT
 382 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X)
 383 #else
 384 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NOSTRICT_P (X)
 385 #endif
 386
 387 #define REG_OK_FOR_INDEX_P(X) 0
 388
 389 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN)                          \
 390 {                                                                       \
 391   (X) = legitimize_address (X, OLDX, MODE);                             \
 392   if (memory_address_p (MODE, X))                                       \
 393     goto WIN;                                                           \
 394 }
 395
 396 #define XEXP_(X,Y) (X)
 397 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN)    \
 398 do {                                                                        \
 399   if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC))     \
 400     {                                                                       \
 401       push_reload (XEXP (X,0), XEXP (X,0), &XEXP (X,0), &XEXP (X,0),        \
 402                    POINTER_REGS, GET_MODE (X),GET_MODE (X) , 0, 0,          \
 403                    OPNUM, RELOAD_OTHER);                                    \
 404       goto WIN;                                                             \
 405     }                                                                       \
 406   if (GET_CODE (X) == PLUS                                                  \
 407       && REG_P (XEXP (X, 0))                                                \
 408       && GET_CODE (XEXP (X, 1)) == CONST_INT                                \
 409       && INTVAL (XEXP (X, 1)) >= 1)                                         \
 410     {                                                                       \
 411       int fit = INTVAL (XEXP (X, 1)) <= (64 - GET_MODE_SIZE (MODE));        \
 412       if (fit)                                                              \
 413         {                                                                   \
 414           if (reg_equiv_address[REGNO (XEXP (X, 0))] != 0)                  \
 415             {                                                               \
 416               int regno = REGNO (XEXP (X, 0));                              \
 417               rtx mem = make_memloc (X, regno);                             \
 418               push_reload (XEXP (mem,0), NULL, &XEXP (mem,0), NULL,         \
 419                            POINTER_REGS, Pmode, VOIDmode, 0, 0,             \
 420                            1, ADDR_TYPE (TYPE));                            \
 421               push_reload (mem, NULL_RTX, &XEXP (X, 0), NULL,               \
 422                            BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
 423                            OPNUM, TYPE);                                    \
 424               goto WIN;                                                     \
 425             }                                                               \
 426           push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL,           \
 427                        BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,     \
 428                        OPNUM, TYPE);                                        \
 429           goto WIN;                                                         \
 430         }                                                                   \
 431       else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
 432         {                                                                   \
 433           push_reload (X, NULL_RTX, &X, NULL,                               \
 434                        POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,          \
 435                        OPNUM, TYPE);                                        \
 436           goto WIN;                                                         \
 437         }                                                                   \
 438     }                                                                       \
 439 } while(0)
 440
 441 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)                        \
 442       if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC)    \
 443         goto LABEL
 444
 445 #define LEGITIMATE_CONSTANT_P(X) 1
 446
 447 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
 448                                             : (TO) == STACK_REG ? 12 \
 449                                             : 2)
 450
 451 #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 :   \
 452                                          (MODE)==HImode ? 4 :   \
 453                                          (MODE)==SImode ? 8 :   \
 454                                          (MODE)==SFmode ? 8 : 16)
 455
 456 #define BRANCH_COST 0
 457
 458 #define SLOW_BYTE_ACCESS 0
 459
 460 #define NO_FUNCTION_CSE
 461
 462 #define TEXT_SECTION_ASM_OP "\t.text"
 463
 464 #define DATA_SECTION_ASM_OP "\t.data"
 465
 466 #define BSS_SECTION_ASM_OP "\t.section .bss"
 467
 468 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
 469    There are no shared libraries on this target, and these sections are
 470    placed in the read-only program memory, so they are not writable.  */
 471
 472 #undef CTORS_SECTION_ASM_OP
 473 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"a\",@progbits"
 474
 475 #undef DTORS_SECTION_ASM_OP
 476 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits"
 477
 478 #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor
 479
 480 #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
 481
 482 #define JUMP_TABLES_IN_TEXT_SECTION 0
 483
 484 #define ASM_COMMENT_START " ; "
 485
 486 #define ASM_APP_ON "/* #APP */\n"
 487
 488 #define ASM_APP_OFF "/* #NOAPP */\n"
 489
 490 /* Switch into a generic section.  */
 491 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
 492 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
 493
 494 #define ASM_OUTPUT_ASCII(FILE, P, SIZE)  gas_output_ascii (FILE,P,SIZE)
 495
 496 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C) ((C) == '\n'                    \
 497                                           || ((C) == '$'))
 498
 499 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)                     \
 500 do {                                                                       \
 501      fputs ("\t.comm ", (STREAM));                                         \
 502      assemble_name ((STREAM), (NAME));                                     \
 503      fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE));                \
 504 } while (0)
 505
 506 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED)                 \
 507   asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
 508
 509 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED)                   \
 510 do {                                                                    \
 511      fputs ("\t.lcomm ", (STREAM));                                     \
 512      assemble_name ((STREAM), (NAME));                                  \
 513      fprintf ((STREAM), ",%d\n", (int)(SIZE));                          \
 514 } while (0)
 515
 516 #undef TYPE_ASM_OP
 517 #undef SIZE_ASM_OP
 518 #undef WEAK_ASM_OP
 519 #define TYPE_ASM_OP     "\t.type\t"
 520 #define SIZE_ASM_OP     "\t.size\t"
 521 #define WEAK_ASM_OP     "\t.weak\t"
 522 /* Define the strings used for the special svr4 .type and .size directives.
 523    These strings generally do not vary from one system running svr4 to
 524    another, but if a given system (e.g. m88k running svr) needs to use
 525    different pseudo-op names for these, they may be overridden in the
 526    file which includes this one.  */
 527
 528
 529 #undef TYPE_OPERAND_FMT
 530 #define TYPE_OPERAND_FMT        "@%s"
 531 /* The following macro defines the format used to output the second
 532    operand of the .type assembler directive.  Different svr4 assemblers
 533    expect various different forms for this operand.  The one given here
 534    is just a default.  You may need to override it in your machine-
 535    specific tm.h file (depending upon the particulars of your assembler).  */
 536
 537 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 538 do {                                                            \
 539      ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");        \
 540      ASM_OUTPUT_LABEL (FILE, NAME);                             \
 541 } while (0)
 542
 543 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                    \
 544   do {                                                                  \
 545     if (!flag_inhibit_size_directive)                                   \
 546       ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                           \
 547   } while (0)
 548
 549 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 550 do {                                                                    \
 551   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");                     \
 552   size_directive_output = 0;                                            \
 553   if (!flag_inhibit_size_directive && DECL_SIZE (DECL))                 \
 554     {                                                                   \
 555       size_directive_output = 1;                                        \
 556       ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME,                            \
 557                                  int_size_in_bytes (TREE_TYPE (DECL))); \
 558     }                                                                   \
 559   ASM_OUTPUT_LABEL(FILE, NAME);                                         \
 560 } while (0)
 561
 562 #undef ASM_FINISH_DECLARE_OBJECT
 563 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 564 do {                                                                     \
 565      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 566      HOST_WIDE_INT size;                                                 \
 567      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 568          && ! AT_END && TOP_LEVEL                                        \
 569          && DECL_INITIAL (DECL) == error_mark_node                       \
 570          && !size_directive_output)                                      \
 571        {                                                                 \
 572          size_directive_output = 1;                                      \
 573          size = int_size_in_bytes (TREE_TYPE (DECL));                    \
 574          ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size);                   \
 575        }                                                                 \
 576    } while (0)
 577
 578
 579 #define ESCAPES \
 580 "\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\
 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\
 582 \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\
 583 \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\
 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 \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\
 587 \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"
 588 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
 589    ASM_OUTPUT_LIMITED_STRING macros.  Each byte in the table
 590    corresponds to a particular byte value [0..255].  For any
 591    given byte value, if the value in the corresponding table
 592    position is zero, the given character can be output directly.
 593    If the table value is 1, the byte must be output as a \ooo
 594    octal escape.  If the tables value is anything else, then the
 595    byte value should be output as a \ followed by the value
 596    in the table.  Note that we can use standard UN*X escape
 597    sequences for many control characters, but we don't use
 598    \a to represent BEL because some svr4 assemblers (e.g. on
 599    the i386) don't know about that.  Also, we don't use \v
 600    since some versions of gas, such as 2.2 did not accept it.  */
 601
 602 #define STRING_LIMIT    ((unsigned) 64)
 603 #define STRING_ASM_OP   "\t.string\t"
 604 /* Some svr4 assemblers have a limit on the number of characters which
 605    can appear in the operand of a .string directive.  If your assembler
 606    has such a limitation, you should define STRING_LIMIT to reflect that
 607    limit.  Note that at least some svr4 assemblers have a limit on the
 608    actual number of bytes in the double-quoted string, and that they
 609    count each character in an escape sequence as one byte.  Thus, an
 610    escape sequence like \377 would count as four bytes.
 611
 612    If your target assembler doesn't support the .string directive, you
 613    should define this to zero.  */
 614
 615 /* Globalizing directive for a label.  */
 616 #define GLOBAL_ASM_OP ".global\t"
 617
 618 #define ASM_WEAKEN_LABEL(FILE, NAME)    \
 619   do                                    \
 620     {                                   \
 621       fputs ("\t.weak\t", (FILE));      \
 622       assemble_name ((FILE), (NAME));   \
 623       fputc ('\n', (FILE));             \
 624     }                                   \
 625   while (0)
 626
 627 #define SUPPORTS_WEAK 1
 628
 629 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)        \
 630 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
 631
 632 #define HAS_INIT_SECTION 1
 633
 634 #define REGISTER_NAMES {                                \
 635   "r0","r1","r2","r3","r4","r5","r6","r7",              \
 636     "r8","r9","r10","r11","r12","r13","r14","r15",      \
 637     "r16","r17","r18","r19","r20","r21","r22","r23",    \
 638     "r24","r25","r26","r27","r28","r29","r30","r31",    \
 639     "__SPL__","__SPH__","argL","argH"}
 640
 641 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
 642
 643 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
 644
 645 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~')
 646
 647 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
 648
 649 #define USER_LABEL_PREFIX ""
 650
 651 #define ASSEMBLER_DIALECT AVR_ENHANCED
 652
 653 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO)      \
 654 {                                               \
 655   gcc_assert (REGNO < 32);                      \
 656   fprintf (STREAM, "\tpush\tr%d", REGNO);       \
 657 }
 658
 659 #define ASM_OUTPUT_REG_POP(STREAM, REGNO)       \
 660 {                                               \
 661   gcc_assert (REGNO < 32);                      \
 662   fprintf (STREAM, "\tpop\tr%d", REGNO);        \
 663 }
 664
 665 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)          \
 666   avr_output_addr_vec_elt(STREAM, VALUE)
 667
 668 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
 669   (switch_to_section (progmem_section), \
 670    (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
 671
 672 #define ASM_OUTPUT_SKIP(STREAM, N)              \
 673 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
 674
 675 #define ASM_OUTPUT_ALIGN(STREAM, POWER)
 676
 677 #define CASE_VECTOR_MODE HImode
 678
 679 extern int avr_case_values_threshold;
 680
 681 #define CASE_VALUES_THRESHOLD avr_case_values_threshold
 682
 683 #undef WORD_REGISTER_OPERATIONS
 684
 685 #define MOVE_MAX 4
 686
 687 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
 688
 689 #define Pmode HImode
 690
 691 #define FUNCTION_MODE HImode
 692
 693 #define DOLLARS_IN_IDENTIFIERS 0
 694
 695 #define NO_DOLLAR_IN_LABEL 1
 696
 697 #define TRAMPOLINE_TEMPLATE(FILE) \
 698   internal_error ("trampolines not supported")
 699
 700 #define TRAMPOLINE_SIZE 4
 701
 702 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT)                             \
 703 {                                                                             \
 704   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT);    \
 705   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
 706 }
 707 /* Store in cc_status the expressions
 708    that the condition codes will describe
 709    after execution of an instruction whose pattern is EXP.
 710    Do not alter them if the instruction would not alter the cc's.  */
 711
 712 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
 713
 714 /* The add insns don't set overflow in a usable way.  */
 715 #define CC_OVERFLOW_UNUSABLE 01000
 716 /* The mov,and,or,xor insns don't set carry.  That's ok though as the
 717    Z bit is all we need when doing unsigned comparisons on the result of
 718    these insns (since they're always with 0).  However, conditions.h has
 719    CC_NO_OVERFLOW defined for this purpose.  Rename it to something more
 720    understandable.  */
 721 #define CC_NO_CARRY CC_NO_OVERFLOW
 722
 723
 724 /* Output assembler code to FILE to increment profiler label # LABELNO
 725    for profiling a function entry.  */
 726
 727 #define FUNCTION_PROFILER(FILE, LABELNO)  \
 728   fprintf (FILE, "/* profiler %d */", (LABELNO))
 729
 730 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
 731                                           adjust_insn_length (INSN, LENGTH))
 732
 733 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
 734
 735 #define CC1_SPEC "%{profile:-p}"
 736
 737 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
 738     %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
 739     %{!fexceptions:-fno-exceptions}"
 740 /* A C string constant that tells the GCC drvier program options to
 741    pass to `cc1plus'.  */
 742
 743 #define ASM_SPEC "%{mmcu=*:-mmcu=%*}"
 744
 745 #define LINK_SPEC " %{!mmcu*:-m avr2}\
 746 %{mmcu=at90s1200|mmcu=attiny11|mmcu=attiny12|mmcu=attiny15|mmcu=attiny28:-m avr1} \
 747 %{mmcu=attiny22|mmcu=attiny26|mmcu=at90s2*|mmcu=at90s4*|mmcu=at90s8*|mmcu=at90c8*|mmcu=at86rf401|mmcu=attiny13|mmcu=attiny2313:-m avr2}\
 748 %{mmcu=atmega103|mmcu=atmega603|mmcu=at43*|mmcu=at76*:-m avr3}\
 749 %{mmcu=atmega8*|mmcu=atmega48:-m avr4}\
 750 %{mmcu=atmega16*|mmcu=atmega32*|mmcu=atmega64*|mmcu=atmega128|mmcu=at90can128|mmcu=at94k:-m avr5}\
 751 %{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
 753 #define LIB_SPEC \
 754   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
 755
 756 #define LIBSTDCXX "-lgcc"
 757 /* No libstdc++ for now.  Empty string doesn't work.  */
 758
 759 #define LIBGCC_SPEC \
 760   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
 761
 762 #define STARTFILE_SPEC "%(crt_binutils)"
 763
 764 #define ENDFILE_SPEC ""
 765
 766 #define CRT_BINUTILS_SPECS "\
 767 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
 768 %{mmcu=attiny11:crttn11.o%s} \
 769 %{mmcu=attiny12:crttn12.o%s} \
 770 %{mmcu=attiny15:crttn15.o%s} \
 771 %{mmcu=attiny28:crttn28.o%s} \
 772 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
 773 %{mmcu=at90s2313:crts2313.o%s} \
 774 %{mmcu=at90s2323:crts2323.o%s} \
 775 %{mmcu=at90s2333:crts2333.o%s} \
 776 %{mmcu=at90s2343:crts2343.o%s} \
 777 %{mmcu=attiny22:crttn22.o%s} \
 778 %{mmcu=attiny26:crttn26.o%s} \
 779 %{mmcu=at90s4433:crts4433.o%s} \
 780 %{mmcu=at90s4414:crts4414.o%s} \
 781 %{mmcu=at90s4434:crts4434.o%s} \
 782 %{mmcu=at90c8534:crtc8534.o%s} \
 783 %{mmcu=at90s8535:crts8535.o%s} \
 784 %{mmcu=at86rf401:crt86401.o%s} \
 785 %{mmcu=attiny13:crttn13.o%s} \
 786 %{mmcu=attiny2313:crttn2313.o%s} \
 787 %{mmcu=atmega103|mmcu=avr3:crtm103.o%s} \
 788 %{mmcu=atmega603:crtm603.o%s} \
 789 %{mmcu=at43usb320:crt43320.o%s} \
 790 %{mmcu=at43usb355:crt43355.o%s} \
 791 %{mmcu=at76c711:crt76711.o%s} \
 792 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
 793 %{mmcu=atmega48:crtm48.o%s} \
 794 %{mmcu=atmega88:crtm88.o%s} \
 795 %{mmcu=atmega8515:crtm8515.o%s} \
 796 %{mmcu=atmega8535:crtm8535.o%s} \
 797 %{mmcu=atmega16:crtm16.o%s} \
 798 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
 799 %{mmcu=atmega162:crtm162.o%s} \
 800 %{mmcu=atmega163:crtm163.o%s} \
 801 %{mmcu=atmega165:crtm165.o%s} \
 802 %{mmcu=atmega168:crtm168.o%s} \
 803 %{mmcu=atmega169:crtm169.o%s} \
 804 %{mmcu=atmega32:crtm32.o%s} \
 805 %{mmcu=atmega323:crtm323.o%s} \
 806 %{mmcu=atmega325:crtm325.o%s} \
 807 %{mmcu=atmega3250:crtm3250.o%s} \
 808 %{mmcu=atmega64:crtm64.o%s} \
 809 %{mmcu=atmega645:crtm6450.o%s} \
 810 %{mmcu=atmega6450:crtm6450.o%s} \
 811 %{mmcu=atmega128:crtm128.o%s} \
 812 %{mmcu=at90can128:crtcan128.o%s} \
 813 %{mmcu=at94k:crtat94k.o%s}"
 814
 815 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
 816
 817 /* This is the default without any -mmcu=* option (AT90S*).  */
 818 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
 819
 820 /* This is undefined macro for collect2 disabling */
 821 #define LINKER_NAME "ld"
 822
 823 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
 824   TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
 825
 826 /* Note that the other files fail to use these
 827    in some of the places where they should.  */
 828
 829 #if defined(__STDC__) || defined(ALMOST_STDC)
 830 #define AS2(a,b,c) #a " " #b "," #c
 831 #define AS2C(b,c) " " #b "," #c
 832 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
 833 #define AS1(a,b) #a " " #b
 834 #else
 835 #define AS1(a,b) "a     b"
 836 #define AS2(a,b,c) "a   b,c"
 837 #define AS2C(b,c) " b,c"
 838 #define AS3(a,b,c,d) "a b,c,d"
 839 #endif
 840 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
 841 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
 842 #define CR_TAB "\n\t"
 843
 844 /* Temporary register r0 */
 845 #define TMP_REGNO 0
 846
 847 /* zero register r1 */
 848 #define ZERO_REGNO 1
 849
 850 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG