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 extern GTY(()) section *progmem_section;
  51
  52 #define AVR_MEGA (avr_mega_p && !TARGET_SHORT_CALLS)
  53 #define AVR_ENHANCED (avr_enhanced_p)
  54
  55 #define TARGET_VERSION fprintf (stderr, " (GNU assembler syntax)");
  56
  57 #define OVERRIDE_OPTIONS avr_override_options ()
  58
  59 #define CAN_DEBUG_WITHOUT_FP
  60
  61 #define BITS_BIG_ENDIAN 0
  62 #define BYTES_BIG_ENDIAN 0
  63 #define WORDS_BIG_ENDIAN 0
  64
  65 #ifdef IN_LIBGCC2
  66 /* This is to get correct SI and DI modes in libgcc2.c (32 and 64 bits).  */
  67 #define UNITS_PER_WORD 4
  68 #else
  69 /* Width of a word, in units (bytes).  */
  70 #define UNITS_PER_WORD 1
  71 #endif
  72
  73 #define POINTER_SIZE 16
  74
  75
  76 /* Maximum sized of reasonable data type
  77    DImode or Dfmode ...  */
  78 #define MAX_FIXED_MODE_SIZE 32
  79
  80 #define PARM_BOUNDARY 8
  81
  82 #define FUNCTION_BOUNDARY 8
  83
  84 #define EMPTY_FIELD_BOUNDARY 8
  85
  86 /* No data type wants to be aligned rounder than this.  */
  87 #define BIGGEST_ALIGNMENT 8
  88
  89
  90 #define STRICT_ALIGNMENT 0
  91
  92 #define INT_TYPE_SIZE (TARGET_INT8 ? 8 : 16)
  93 #define SHORT_TYPE_SIZE (INT_TYPE_SIZE == 8 ? INT_TYPE_SIZE : 16)
  94 #define LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 16 : 32)
  95 #define LONG_LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 32 : 64)
  96 #define FLOAT_TYPE_SIZE 32
  97 #define DOUBLE_TYPE_SIZE 32
  98 #define LONG_DOUBLE_TYPE_SIZE 32
  99
 100 #define DEFAULT_SIGNED_CHAR 1
 101
 102 #define SIZE_TYPE (INT_TYPE_SIZE == 8 ? "long unsigned int" : "unsigned int")
 103 #define PTRDIFF_TYPE (INT_TYPE_SIZE == 8 ? "long int" :"int")
 104
 105 #define WCHAR_TYPE_SIZE 16
 106
 107 #define FIRST_PSEUDO_REGISTER 36
 108
 109 #define FIXED_REGISTERS {\
 110   1,1,/* r0 r1 */\
 111   0,0,/* r2 r3 */\
 112   0,0,/* r4 r5 */\
 113   0,0,/* r6 r7 */\
 114   0,0,/* r8 r9 */\
 115   0,0,/* r10 r11 */\
 116   0,0,/* r12 r13 */\
 117   0,0,/* r14 r15 */\
 118   0,0,/* r16 r17 */\
 119   0,0,/* r18 r19 */\
 120   0,0,/* r20 r21 */\
 121   0,0,/* r22 r23 */\
 122   0,0,/* r24 r25 */\
 123   0,0,/* r26 r27 */\
 124   0,0,/* r28 r29 */\
 125   0,0,/* r30 r31 */\
 126   1,1,/*  STACK */\
 127   1,1 /* arg pointer */  }
 128
 129 #define CALL_USED_REGISTERS {                   \
 130   1,1,/* r0 r1 */                               \
 131     0,0,/* r2 r3 */                             \
 132     0,0,/* r4 r5 */                             \
 133     0,0,/* r6 r7 */                             \
 134     0,0,/* r8 r9 */                             \
 135     0,0,/* r10 r11 */                           \
 136     0,0,/* r12 r13 */                           \
 137     0,0,/* r14 r15 */                           \
 138     0,0,/* r16 r17 */                           \
 139     1,1,/* r18 r19 */                           \
 140     1,1,/* r20 r21 */                           \
 141     1,1,/* r22 r23 */                           \
 142     1,1,/* r24 r25 */                           \
 143     1,1,/* r26 r27 */                           \
 144     0,0,/* r28 r29 */                           \
 145     1,1,/* r30 r31 */                           \
 146     1,1,/*  STACK */                            \
 147     1,1 /* arg pointer */  }
 148
 149 #define REG_ALLOC_ORDER {                       \
 150     24,25,                                      \
 151     18,19,                                      \
 152     20,21,                                      \
 153     22,23,                                      \
 154     30,31,                                      \
 155     26,27,                                      \
 156     28,29,                                      \
 157     17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,    \
 158     0,1,                                        \
 159     32,33,34,35                                 \
 160     }
 161
 162 #define ORDER_REGS_FOR_LOCAL_ALLOC order_regs_for_local_alloc ()
 163
 164
 165 #define HARD_REGNO_NREGS(REGNO, MODE) ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
 166
 167 #define HARD_REGNO_MODE_OK(REGNO, MODE) avr_hard_regno_mode_ok(REGNO, MODE)
 168
 169 #define MODES_TIEABLE_P(MODE1, MODE2) 1
 170
 171 enum reg_class {
 172   NO_REGS,
 173   R0_REG,                       /* r0 */
 174   POINTER_X_REGS,               /* r26 - r27 */
 175   POINTER_Y_REGS,               /* r28 - r29 */
 176   POINTER_Z_REGS,               /* r30 - r31 */
 177   STACK_REG,                    /* STACK */
 178   BASE_POINTER_REGS,            /* r28 - r31 */
 179   POINTER_REGS,                 /* r26 - r31 */
 180   ADDW_REGS,                    /* r24 - r31 */
 181   SIMPLE_LD_REGS,               /* r16 - r23 */
 182   LD_REGS,                      /* r16 - r31 */
 183   NO_LD_REGS,                   /* r0 - r15 */
 184   GENERAL_REGS,                 /* r0 - r31 */
 185   ALL_REGS, LIM_REG_CLASSES
 186 };
 187
 188
 189 #define N_REG_CLASSES (int)LIM_REG_CLASSES
 190
 191 #define REG_CLASS_NAMES {                                       \
 192                  "NO_REGS",                                     \
 193                    "R0_REG",    /* r0 */                        \
 194                    "POINTER_X_REGS", /* r26 - r27 */            \
 195                    "POINTER_Y_REGS", /* r28 - r29 */            \
 196                    "POINTER_Z_REGS", /* r30 - r31 */            \
 197                    "STACK_REG", /* STACK */                     \
 198                    "BASE_POINTER_REGS", /* r28 - r31 */         \
 199                    "POINTER_REGS", /* r26 - r31 */              \
 200                    "ADDW_REGS", /* r24 - r31 */                 \
 201                    "SIMPLE_LD_REGS", /* r16 - r23 */            \
 202                    "LD_REGS",   /* r16 - r31 */                 \
 203                    "NO_LD_REGS", /* r0 - r15 */                 \
 204                    "GENERAL_REGS", /* r0 - r31 */               \
 205                    "ALL_REGS" }
 206
 207 #define REG_X 26
 208 #define REG_Y 28
 209 #define REG_Z 30
 210 #define REG_W 24
 211
 212 #define REG_CLASS_CONTENTS {                                            \
 213   {0x00000000,0x00000000},      /* NO_REGS */                           \
 214   {0x00000001,0x00000000},      /* R0_REG */                            \
 215   {3 << REG_X,0x00000000},      /* POINTER_X_REGS, r26 - r27 */         \
 216   {3 << REG_Y,0x00000000},      /* POINTER_Y_REGS, r28 - r29 */         \
 217   {3 << REG_Z,0x00000000},      /* POINTER_Z_REGS, r30 - r31 */         \
 218   {0x00000000,0x00000003},      /* STACK_REG, STACK */                  \
 219   {(3 << REG_Y) | (3 << REG_Z),                                         \
 220      0x00000000},               /* BASE_POINTER_REGS, r28 - r31 */      \
 221   {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z),                          \
 222      0x00000000},               /* POINTER_REGS, r26 - r31 */           \
 223   {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z) | (3 << REG_W),           \
 224      0x00000000},               /* ADDW_REGS, r24 - r31 */              \
 225   {0x00ff0000,0x00000000},      /* SIMPLE_LD_REGS r16 - r23 */          \
 226   {(3 << REG_X)|(3 << REG_Y)|(3 << REG_Z)|(3 << REG_W)|(0xff << 16),    \
 227      0x00000000},       /* LD_REGS, r16 - r31 */                        \
 228   {0x0000ffff,0x00000000},      /* NO_LD_REGS  r0 - r15 */              \
 229   {0xffffffff,0x00000000},      /* GENERAL_REGS, r0 - r31 */            \
 230   {0xffffffff,0x00000003}       /* ALL_REGS */                          \
 231 }
 232
 233 #define REGNO_REG_CLASS(R) avr_regno_reg_class(R)
 234
 235 #define BASE_REG_CLASS (reload_completed ? BASE_POINTER_REGS : POINTER_REGS)
 236
 237 #define INDEX_REG_CLASS NO_REGS
 238
 239 #define REG_CLASS_FROM_LETTER(C) avr_reg_class_from_letter(C)
 240
 241 #define REGNO_OK_FOR_BASE_P(r) (((r) < FIRST_PSEUDO_REGISTER            \
 242                                  && ((r) == REG_X                       \
 243                                      || (r) == REG_Y                    \
 244                                      || (r) == REG_Z                    \
 245                                      || (r) == ARG_POINTER_REGNUM))     \
 246                                 || (reg_renumber                        \
 247                                     && (reg_renumber[r] == REG_X        \
 248                                         || reg_renumber[r] == REG_Y     \
 249                                         || reg_renumber[r] == REG_Z     \
 250                                         || (reg_renumber[r]             \
 251                                             == ARG_POINTER_REGNUM))))
 252
 253 #define REGNO_OK_FOR_INDEX_P(NUM) 0
 254
 255 #define PREFERRED_RELOAD_CLASS(X, CLASS) preferred_reload_class(X,CLASS)
 256
 257 #define SMALL_REGISTER_CLASSES 1
 258
 259 #define CLASS_LIKELY_SPILLED_P(c) class_likely_spilled_p(c)
 260
 261 #define CLASS_MAX_NREGS(CLASS, MODE)   class_max_nregs (CLASS, MODE)
 262
 263 #define CONST_OK_FOR_LETTER_P(VALUE, C)                         \
 264   ((C) == 'I' ? (VALUE) >= 0 && (VALUE) <= 63 :                 \
 265    (C) == 'J' ? (VALUE) <= 0 && (VALUE) >= -63:                 \
 266    (C) == 'K' ? (VALUE) == 2 :                                  \
 267    (C) == 'L' ? (VALUE) == 0 :                                  \
 268    (C) == 'M' ? (VALUE) >= 0 && (VALUE) <= 0xff :               \
 269    (C) == 'N' ? (VALUE) == -1:                                  \
 270    (C) == 'O' ? (VALUE) == 8 || (VALUE) == 16 || (VALUE) == 24: \
 271    (C) == 'P' ? (VALUE) == 1 :                                  \
 272    0)
 273
 274 #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
 275   ((C) == 'G' ? (VALUE) == CONST0_RTX (SFmode)  \
 276    : 0)
 277
 278 #define EXTRA_CONSTRAINT(x, c) extra_constraint(x, c)
 279
 280 #define STACK_PUSH_CODE POST_DEC
 281
 282 #define STACK_GROWS_DOWNWARD
 283
 284 #define STARTING_FRAME_OFFSET 1
 285
 286 #define STACK_POINTER_OFFSET 1
 287
 288 #define FIRST_PARM_OFFSET(FUNDECL) 0
 289
 290 #define STACK_BOUNDARY 8
 291
 292 #define STACK_POINTER_REGNUM 32
 293
 294 #define FRAME_POINTER_REGNUM REG_Y
 295
 296 #define ARG_POINTER_REGNUM 34
 297
 298 #define STATIC_CHAIN_REGNUM 2
 299
 300 #define FRAME_POINTER_REQUIRED frame_pointer_required_p()
 301
 302 #define ELIMINABLE_REGS {                                       \
 303       {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM},               \
 304         {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}            \
 305        ,{FRAME_POINTER_REGNUM+1,STACK_POINTER_REGNUM+1}}
 306
 307 #define CAN_ELIMINATE(FROM, TO) (((FROM) == ARG_POINTER_REGNUM             \
 308                                   && (TO) == FRAME_POINTER_REGNUM)         \
 309                                  || (((FROM) == FRAME_POINTER_REGNUM       \
 310                                       || (FROM) == FRAME_POINTER_REGNUM+1) \
 311                                      && ! FRAME_POINTER_REQUIRED           \
 312                                      ))
 313
 314 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)                    \
 315      OFFSET = initial_elimination_offset (FROM, TO)
 316
 317 #define RETURN_ADDR_RTX(count, x) \
 318   gen_rtx_MEM (Pmode, memory_address (Pmode, plus_constant (tem, 1)))
 319
 320 #define PUSH_ROUNDING(NPUSHED) (NPUSHED)
 321
 322 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
 323
 324 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) (function_arg (&(CUM), MODE, TYPE, NAMED))
 325
 326 typedef struct avr_args {
 327   int nregs;                    /* # registers available for passing */
 328   int regno;                    /* next available register number */
 329 } CUMULATIVE_ARGS;
 330
 331 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
 332   init_cumulative_args (&(CUM), FNTYPE, LIBNAME, FNDECL)
 333
 334 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)    \
 335   (function_arg_advance (&CUM, MODE, TYPE, NAMED))
 336
 337 #define FUNCTION_ARG_REGNO_P(r) function_arg_regno_p(r)
 338
 339 extern int avr_reg_order[];
 340
 341 #define RET_REGISTER avr_ret_register ()
 342
 343 #define FUNCTION_VALUE(VALTYPE, FUNC) avr_function_value (VALTYPE, FUNC)
 344
 345 #define LIBCALL_VALUE(MODE)  avr_libcall_value (MODE)
 346
 347 #define FUNCTION_VALUE_REGNO_P(N) ((int) (N) == RET_REGISTER)
 348
 349 #define DEFAULT_PCC_STRUCT_RETURN 0
 350
 351 #define EPILOGUE_USES(REGNO) 0
 352
 353 #define HAVE_POST_INCREMENT 1
 354 #define HAVE_PRE_DECREMENT 1
 355
 356 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
 357
 358 #define MAX_REGS_PER_ADDRESS 1
 359
 360 #ifdef REG_OK_STRICT
 361 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 362 {                                                       \
 363   if (legitimate_address_p (mode, operand, 1))          \
 364     goto ADDR;                                          \
 365 }
 366 #  else
 367 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 368 {                                                       \
 369   if (legitimate_address_p (mode, operand, 0))          \
 370     goto ADDR;                                          \
 371 }
 372 #endif
 373
 374 #define REG_OK_FOR_BASE_NOSTRICT_P(X) \
 375   (REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X))
 376
 377 #define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
 378
 379 #ifdef REG_OK_STRICT
 380 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X)
 381 #else
 382 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NOSTRICT_P (X)
 383 #endif
 384
 385 #define REG_OK_FOR_INDEX_P(X) 0
 386
 387 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN)                          \
 388 {                                                                       \
 389   (X) = legitimize_address (X, OLDX, MODE);                             \
 390   if (memory_address_p (MODE, X))                                       \
 391     goto WIN;                                                           \
 392 }
 393
 394 #define XEXP_(X,Y) (X)
 395 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN)    \
 396 do {                                                                        \
 397   if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC))     \
 398     {                                                                       \
 399       push_reload (XEXP (X,0), XEXP (X,0), &XEXP (X,0), &XEXP (X,0),        \
 400                    POINTER_REGS, GET_MODE (X),GET_MODE (X) , 0, 0,          \
 401                    OPNUM, RELOAD_OTHER);                                    \
 402       goto WIN;                                                             \
 403     }                                                                       \
 404   if (GET_CODE (X) == PLUS                                                  \
 405       && REG_P (XEXP (X, 0))                                                \
 406       && GET_CODE (XEXP (X, 1)) == CONST_INT                                \
 407       && INTVAL (XEXP (X, 1)) >= 1)                                         \
 408     {                                                                       \
 409       int fit = INTVAL (XEXP (X, 1)) <= (64 - GET_MODE_SIZE (MODE));        \
 410       if (fit)                                                              \
 411         {                                                                   \
 412           if (reg_equiv_address[REGNO (XEXP (X, 0))] != 0)                  \
 413             {                                                               \
 414               int regno = REGNO (XEXP (X, 0));                              \
 415               rtx mem = make_memloc (X, regno);                             \
 416               push_reload (XEXP (mem,0), NULL, &XEXP (mem,0), NULL,         \
 417                            POINTER_REGS, Pmode, VOIDmode, 0, 0,             \
 418                            1, ADDR_TYPE (TYPE));                            \
 419               push_reload (mem, NULL_RTX, &XEXP (X, 0), NULL,               \
 420                            BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
 421                            OPNUM, TYPE);                                    \
 422               goto WIN;                                                     \
 423             }                                                               \
 424           push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL,           \
 425                        BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,     \
 426                        OPNUM, TYPE);                                        \
 427           goto WIN;                                                         \
 428         }                                                                   \
 429       else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
 430         {                                                                   \
 431           push_reload (X, NULL_RTX, &X, NULL,                               \
 432                        POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,          \
 433                        OPNUM, TYPE);                                        \
 434           goto WIN;                                                         \
 435         }                                                                   \
 436     }                                                                       \
 437 } while(0)
 438
 439 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)                        \
 440       if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC)    \
 441         goto LABEL
 442
 443 #define LEGITIMATE_CONSTANT_P(X) 1
 444
 445 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
 446                                             : (TO) == STACK_REG ? 12 \
 447                                             : 2)
 448
 449 #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 :   \
 450                                          (MODE)==HImode ? 4 :   \
 451                                          (MODE)==SImode ? 8 :   \
 452                                          (MODE)==SFmode ? 8 : 16)
 453
 454 #define BRANCH_COST 0
 455
 456 #define SLOW_BYTE_ACCESS 0
 457
 458 #define NO_FUNCTION_CSE
 459
 460 #define TEXT_SECTION_ASM_OP "\t.text"
 461
 462 #define DATA_SECTION_ASM_OP "\t.data"
 463
 464 #define BSS_SECTION_ASM_OP "\t.section .bss"
 465
 466 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
 467    There are no shared libraries on this target, and these sections are
 468    placed in the read-only program memory, so they are not writable.  */
 469
 470 #undef CTORS_SECTION_ASM_OP
 471 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"a\",@progbits"
 472
 473 #undef DTORS_SECTION_ASM_OP
 474 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits"
 475
 476 #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor
 477
 478 #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
 479
 480 #define JUMP_TABLES_IN_TEXT_SECTION 0
 481
 482 #define ASM_COMMENT_START " ; "
 483
 484 #define ASM_APP_ON "/* #APP */\n"
 485
 486 #define ASM_APP_OFF "/* #NOAPP */\n"
 487
 488 /* Switch into a generic section.  */
 489 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
 490 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
 491
 492 #define ASM_OUTPUT_ASCII(FILE, P, SIZE)  gas_output_ascii (FILE,P,SIZE)
 493
 494 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C) ((C) == '\n'                    \
 495                                           || ((C) == '$'))
 496
 497 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)                     \
 498 do {                                                                       \
 499      fputs ("\t.comm ", (STREAM));                                         \
 500      assemble_name ((STREAM), (NAME));                                     \
 501      fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE));                \
 502 } while (0)
 503
 504 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED)                 \
 505   asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
 506
 507 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED)                   \
 508 do {                                                                    \
 509      fputs ("\t.lcomm ", (STREAM));                                     \
 510      assemble_name ((STREAM), (NAME));                                  \
 511      fprintf ((STREAM), ",%d\n", (int)(SIZE));                          \
 512 } while (0)
 513
 514 #undef TYPE_ASM_OP
 515 #undef SIZE_ASM_OP
 516 #undef WEAK_ASM_OP
 517 #define TYPE_ASM_OP     "\t.type\t"
 518 #define SIZE_ASM_OP     "\t.size\t"
 519 #define WEAK_ASM_OP     "\t.weak\t"
 520 /* Define the strings used for the special svr4 .type and .size directives.
 521    These strings generally do not vary from one system running svr4 to
 522    another, but if a given system (e.g. m88k running svr) needs to use
 523    different pseudo-op names for these, they may be overridden in the
 524    file which includes this one.  */
 525
 526
 527 #undef TYPE_OPERAND_FMT
 528 #define TYPE_OPERAND_FMT        "@%s"
 529 /* The following macro defines the format used to output the second
 530    operand of the .type assembler directive.  Different svr4 assemblers
 531    expect various different forms for this operand.  The one given here
 532    is just a default.  You may need to override it in your machine-
 533    specific tm.h file (depending upon the particulars of your assembler).  */
 534
 535 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 536 do {                                                            \
 537      ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");        \
 538      ASM_OUTPUT_LABEL (FILE, NAME);                             \
 539 } while (0)
 540
 541 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                    \
 542   do {                                                                  \
 543     if (!flag_inhibit_size_directive)                                   \
 544       ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                           \
 545   } while (0)
 546
 547 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 548 do {                                                                    \
 549   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");                     \
 550   size_directive_output = 0;                                            \
 551   if (!flag_inhibit_size_directive && DECL_SIZE (DECL))                 \
 552     {                                                                   \
 553       size_directive_output = 1;                                        \
 554       ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME,                            \
 555                                  int_size_in_bytes (TREE_TYPE (DECL))); \
 556     }                                                                   \
 557   ASM_OUTPUT_LABEL(FILE, NAME);                                         \
 558 } while (0)
 559
 560 #undef ASM_FINISH_DECLARE_OBJECT
 561 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 562 do {                                                                     \
 563      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 564      HOST_WIDE_INT size;                                                 \
 565      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 566          && ! AT_END && TOP_LEVEL                                        \
 567          && DECL_INITIAL (DECL) == error_mark_node                       \
 568          && !size_directive_output)                                      \
 569        {                                                                 \
 570          size_directive_output = 1;                                      \
 571          size = int_size_in_bytes (TREE_TYPE (DECL));                    \
 572          ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size);                   \
 573        }                                                                 \
 574    } while (0)
 575
 576
 577 #define ESCAPES \
 578 "\1\1\1\1\1\1\1\1btn\1fr\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
 579 \0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
 580 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\\\0\0\0\
 581 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\1\
 582 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
 583 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
 584 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
 585 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1"
 586 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
 587    ASM_OUTPUT_LIMITED_STRING macros.  Each byte in the table
 588    corresponds to a particular byte value [0..255].  For any
 589    given byte value, if the value in the corresponding table
 590    position is zero, the given character can be output directly.
 591    If the table value is 1, the byte must be output as a \ooo
 592    octal escape.  If the tables value is anything else, then the
 593    byte value should be output as a \ followed by the value
 594    in the table.  Note that we can use standard UN*X escape
 595    sequences for many control characters, but we don't use
 596    \a to represent BEL because some svr4 assemblers (e.g. on
 597    the i386) don't know about that.  Also, we don't use \v
 598    since some versions of gas, such as 2.2 did not accept it.  */
 599
 600 #define STRING_LIMIT    ((unsigned) 64)
 601 #define STRING_ASM_OP   "\t.string\t"
 602 /* Some svr4 assemblers have a limit on the number of characters which
 603    can appear in the operand of a .string directive.  If your assembler
 604    has such a limitation, you should define STRING_LIMIT to reflect that
 605    limit.  Note that at least some svr4 assemblers have a limit on the
 606    actual number of bytes in the double-quoted string, and that they
 607    count each character in an escape sequence as one byte.  Thus, an
 608    escape sequence like \377 would count as four bytes.
 609
 610    If your target assembler doesn't support the .string directive, you
 611    should define this to zero.  */
 612
 613 /* Globalizing directive for a label.  */
 614 #define GLOBAL_ASM_OP ".global\t"
 615
 616 #define ASM_WEAKEN_LABEL(FILE, NAME)    \
 617   do                                    \
 618     {                                   \
 619       fputs ("\t.weak\t", (FILE));      \
 620       assemble_name ((FILE), (NAME));   \
 621       fputc ('\n', (FILE));             \
 622     }                                   \
 623   while (0)
 624
 625 #define SUPPORTS_WEAK 1
 626
 627 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)        \
 628 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
 629
 630 #define HAS_INIT_SECTION 1
 631
 632 #define REGISTER_NAMES {                                \
 633   "r0","r1","r2","r3","r4","r5","r6","r7",              \
 634     "r8","r9","r10","r11","r12","r13","r14","r15",      \
 635     "r16","r17","r18","r19","r20","r21","r22","r23",    \
 636     "r24","r25","r26","r27","r28","r29","r30","r31",    \
 637     "__SPL__","__SPH__","argL","argH"}
 638
 639 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
 640
 641 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
 642
 643 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~')
 644
 645 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
 646
 647 #define USER_LABEL_PREFIX ""
 648
 649 #define ASSEMBLER_DIALECT AVR_ENHANCED
 650
 651 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO)      \
 652 {                                               \
 653   gcc_assert (REGNO < 32);                      \
 654   fprintf (STREAM, "\tpush\tr%d", REGNO);       \
 655 }
 656
 657 #define ASM_OUTPUT_REG_POP(STREAM, REGNO)       \
 658 {                                               \
 659   gcc_assert (REGNO < 32);                      \
 660   fprintf (STREAM, "\tpop\tr%d", REGNO);        \
 661 }
 662
 663 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)          \
 664   avr_output_addr_vec_elt(STREAM, VALUE)
 665
 666 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
 667   (switch_to_section (progmem_section), \
 668    (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
 669
 670 #define ASM_OUTPUT_SKIP(STREAM, N)              \
 671 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
 672
 673 #define ASM_OUTPUT_ALIGN(STREAM, POWER)
 674
 675 #define CASE_VECTOR_MODE HImode
 676
 677 extern int avr_case_values_threshold;
 678
 679 #define CASE_VALUES_THRESHOLD avr_case_values_threshold
 680
 681 #undef WORD_REGISTER_OPERATIONS
 682
 683 #define MOVE_MAX 4
 684
 685 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
 686
 687 #define Pmode HImode
 688
 689 #define FUNCTION_MODE HImode
 690
 691 #define DOLLARS_IN_IDENTIFIERS 0
 692
 693 #define NO_DOLLAR_IN_LABEL 1
 694
 695 #define TRAMPOLINE_TEMPLATE(FILE) \
 696   internal_error ("trampolines not supported")
 697
 698 #define TRAMPOLINE_SIZE 4
 699
 700 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT)                             \
 701 {                                                                             \
 702   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT);    \
 703   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
 704 }
 705 /* Store in cc_status the expressions
 706    that the condition codes will describe
 707    after execution of an instruction whose pattern is EXP.
 708    Do not alter them if the instruction would not alter the cc's.  */
 709
 710 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
 711
 712 /* The add insns don't set overflow in a usable way.  */
 713 #define CC_OVERFLOW_UNUSABLE 01000
 714 /* The mov,and,or,xor insns don't set carry.  That's ok though as the
 715    Z bit is all we need when doing unsigned comparisons on the result of
 716    these insns (since they're always with 0).  However, conditions.h has
 717    CC_NO_OVERFLOW defined for this purpose.  Rename it to something more
 718    understandable.  */
 719 #define CC_NO_CARRY CC_NO_OVERFLOW
 720
 721
 722 /* Output assembler code to FILE to increment profiler label # LABELNO
 723    for profiling a function entry.  */
 724
 725 #define FUNCTION_PROFILER(FILE, LABELNO)  \
 726   fprintf (FILE, "/* profiler %d */", (LABELNO))
 727
 728 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
 729                                           adjust_insn_length (INSN, LENGTH))
 730
 731 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
 732
 733 #define CC1_SPEC "%{profile:-p}"
 734
 735 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
 736     %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
 737     %{!fexceptions:-fno-exceptions}"
 738 /* A C string constant that tells the GCC drvier program options to
 739    pass to `cc1plus'.  */
 740
 741 #define ASM_SPEC "%{mmcu=*:-mmcu=%*}"
 742
 743 #define LINK_SPEC " %{!mmcu*:-m avr2}\
 744 %{mmcu=at90s1200|mmcu=attiny11|mmcu=attiny12|mmcu=attiny15|mmcu=attiny28:-m avr1} \
 745 %{mmcu=attiny22|mmcu=attiny26|mmcu=at90s2*|mmcu=at90s4*|mmcu=at90s8*|mmcu=at90c8*|mmcu=at86rf401|mmcu=attiny13|mmcu=attiny2313:-m avr2}\
 746 %{mmcu=atmega103|mmcu=atmega603|mmcu=at43*|mmcu=at76*:-m avr3}\
 747 %{mmcu=atmega8*|mmcu=atmega48:-m avr4}\
 748 %{mmcu=atmega16*|mmcu=atmega32*|mmcu=atmega64*|mmcu=atmega128|mmcu=at90can128|mmcu=at94k:-m avr5}\
 749 %{mmcu=atmega325|mmcu=atmega3250|mmcu=atmega48|mmcu=atmega88|mmcu=atmega64|mmcu=atmega645|mmcu=atmega6450|mmcu=atmega128|mmcu=at90can128|mmcu=at90can128|mmcu=atmega162|mmcu=atmega165|mmcu=atmega168|mmcu=atmega169: -Tdata 0x800100} "
 750
 751 #define LIB_SPEC \
 752   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
 753
 754 #define LIBSTDCXX "-lgcc"
 755 /* No libstdc++ for now.  Empty string doesn't work.  */
 756
 757 #define LIBGCC_SPEC \
 758   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
 759
 760 #define STARTFILE_SPEC "%(crt_binutils)"
 761
 762 #define ENDFILE_SPEC ""
 763
 764 #define CRT_BINUTILS_SPECS "\
 765 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
 766 %{mmcu=attiny11:crttn11.o%s} \
 767 %{mmcu=attiny12:crttn12.o%s} \
 768 %{mmcu=attiny15:crttn15.o%s} \
 769 %{mmcu=attiny28:crttn28.o%s} \
 770 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
 771 %{mmcu=at90s2313:crts2313.o%s} \
 772 %{mmcu=at90s2323:crts2323.o%s} \
 773 %{mmcu=at90s2333:crts2333.o%s} \
 774 %{mmcu=at90s2343:crts2343.o%s} \
 775 %{mmcu=attiny22:crttn22.o%s} \
 776 %{mmcu=attiny26:crttn26.o%s} \
 777 %{mmcu=at90s4433:crts4433.o%s} \
 778 %{mmcu=at90s4414:crts4414.o%s} \
 779 %{mmcu=at90s4434:crts4434.o%s} \
 780 %{mmcu=at90c8534:crtc8534.o%s} \
 781 %{mmcu=at90s8535:crts8535.o%s} \
 782 %{mmcu=at86rf401:crt86401.o%s} \
 783 %{mmcu=attiny13:crttn13.o%s} \
 784 %{mmcu=attiny2313:crttn2313.o%s} \
 785 %{mmcu=atmega103|mmcu=avr3:crtm103.o%s} \
 786 %{mmcu=atmega603:crtm603.o%s} \
 787 %{mmcu=at43usb320:crt43320.o%s} \
 788 %{mmcu=at43usb355:crt43355.o%s} \
 789 %{mmcu=at76c711:crt76711.o%s} \
 790 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
 791 %{mmcu=atmega48:crtm48.o%s} \
 792 %{mmcu=atmega88:crtm88.o%s} \
 793 %{mmcu=atmega8515:crtm8515.o%s} \
 794 %{mmcu=atmega8535:crtm8535.o%s} \
 795 %{mmcu=atmega16:crtm16.o%s} \
 796 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
 797 %{mmcu=atmega162:crtm162.o%s} \
 798 %{mmcu=atmega163:crtm163.o%s} \
 799 %{mmcu=atmega165:crtm165.o%s} \
 800 %{mmcu=atmega168:crtm168.o%s} \
 801 %{mmcu=atmega169:crtm169.o%s} \
 802 %{mmcu=atmega32:crtm32.o%s} \
 803 %{mmcu=atmega323:crtm323.o%s} \
 804 %{mmcu=atmega325:crtm325.o%s} \
 805 %{mmcu=atmega3250:crtm3250.o%s} \
 806 %{mmcu=atmega64:crtm64.o%s} \
 807 %{mmcu=atmega645:crtm6450.o%s} \
 808 %{mmcu=atmega6450:crtm6450.o%s} \
 809 %{mmcu=atmega128:crtm128.o%s} \
 810 %{mmcu=at90can128:crtcan128.o%s} \
 811 %{mmcu=at94k:crtat94k.o%s}"
 812
 813 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
 814
 815 /* This is the default without any -mmcu=* option (AT90S*).  */
 816 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
 817
 818 /* This is undefined macro for collect2 disabling */
 819 #define LINKER_NAME "ld"
 820
 821 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
 822   TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
 823
 824 /* Note that the other files fail to use these
 825    in some of the places where they should.  */
 826
 827 #if defined(__STDC__) || defined(ALMOST_STDC)
 828 #define AS2(a,b,c) #a " " #b "," #c
 829 #define AS2C(b,c) " " #b "," #c
 830 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
 831 #define AS1(a,b) #a " " #b
 832 #else
 833 #define AS1(a,b) "a     b"
 834 #define AS2(a,b,c) "a   b,c"
 835 #define AS2C(b,c) " b,c"
 836 #define AS3(a,b,c,d) "a b,c,d"
 837 #endif
 838 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
 839 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
 840 #define CR_TAB "\n\t"
 841
 842 /* Temporary register r0 */
 843 #define TMP_REGNO 0
 844
 845 /* zero register r1 */
 846 #define ZERO_REGNO 1
 847
 848 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG