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    2008 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 3, 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 COPYING3.  If not see
  21 <http://www.gnu.org/licenses/>.  */
  22
  23 /* Names to predefine in the preprocessor for this target machine.  */
  24
  25 struct base_arch_s {
  26   /* Assembler only.  */
  27   int asm_only;
  28
  29   /* Core have 'MUL*' instructions.  */
  30   int have_mul;
  31
  32   /* Core have 'CALL' and 'JMP' instructions.  */
  33   int have_jmp_call;
  34
  35   /* Core have 'MOVW' and 'LPM Rx,Z' instructions.  */
  36   int have_movw_lpmx;
  37
  38   /* Core have 'ELPM' instructions.  */
  39   int have_elpm;
  40
  41   /* Core have 'ELPM Rx,Z' instructions.  */
  42   int have_elpmx;
  43
  44   /* Core have 'EICALL' and 'EIJMP' instructions.  */
  45   int have_eijmp_eicall;
  46
  47   /* Reserved. */
  48   int reserved;
  49
  50   const char *const macro;
  51 };
  52
  53 extern const struct base_arch_s *avr_current_arch;
  54
  55 #define TARGET_CPU_CPP_BUILTINS()               \
  56   do                                            \
  57     {                                           \
  58       builtin_define_std ("AVR");               \
  59       if (avr_current_arch->macro)              \
  60         builtin_define (avr_current_arch->macro);       \
  61       if (avr_extra_arch_macro)                 \
  62         builtin_define (avr_extra_arch_macro);  \
  63       if (avr_current_arch->have_elpm)          \
  64         builtin_define ("__AVR_HAVE_RAMPZ__");  \
  65       if (avr_current_arch->have_elpm)          \
  66         builtin_define ("__AVR_HAVE_ELPM__");   \
  67       if (avr_current_arch->have_elpmx)         \
  68         builtin_define ("__AVR_HAVE_ELPMX__");  \
  69       if (avr_current_arch->have_movw_lpmx)     \
  70         {                                       \
  71           builtin_define ("__AVR_HAVE_MOVW__"); \
  72           builtin_define ("__AVR_HAVE_LPMX__"); \
  73         }                                       \
  74       if (avr_current_arch->asm_only)           \
  75         builtin_define ("__AVR_ASM_ONLY__");    \
  76       if (avr_current_arch->have_mul)           \
  77         {                                       \
  78           builtin_define ("__AVR_ENHANCED__");  \
  79           builtin_define ("__AVR_HAVE_MUL__");  \
  80         }                                       \
  81       if (avr_current_arch->have_jmp_call)      \
  82         {                                       \
  83           builtin_define ("__AVR_MEGA__");      \
  84           builtin_define ("__AVR_HAVE_JMP_CALL__");     \
  85         }                                       \
  86       if (avr_current_arch->have_eijmp_eicall)  \
  87         {                                       \
  88           builtin_define ("__AVR_HAVE_EIJMP_EICALL__"); \
  89           builtin_define ("__AVR_3_BYTE_PC__"); \
  90         }                                       \
  91       else                                      \
  92         {                                       \
  93           builtin_define ("__AVR_2_BYTE_PC__"); \
  94         }                                       \
  95       if (TARGET_NO_INTERRUPTS)                 \
  96         builtin_define ("__NO_INTERRUPTS__");   \
  97     }                                           \
  98   while (0)
  99
 100 extern const char *avr_extra_arch_macro;
 101
 102 #if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS)
 103 extern GTY(()) section *progmem_section;
 104 #endif
 105
 106 #define AVR_HAVE_JMP_CALL (avr_current_arch->have_jmp_call && !TARGET_SHORT_CALLS)
 107 #define AVR_HAVE_MUL (avr_current_arch->have_mul)
 108 #define AVR_HAVE_MOVW (avr_current_arch->have_movw_lpmx)
 109 #define AVR_HAVE_LPMX (avr_current_arch->have_movw_lpmx)
 110 #define AVR_HAVE_RAMPZ (avr_current_arch->have_elpm)
 111 #define AVR_HAVE_EIJMP_EICALL (avr_current_arch->have_eijmp_eicall)
 112
 113 #define AVR_2_BYTE_PC (!AVR_HAVE_EIJMP_EICALL)
 114 #define AVR_3_BYTE_PC (AVR_HAVE_EIJMP_EICALL)
 115
 116 #define TARGET_VERSION fprintf (stderr, " (GNU assembler syntax)");
 117
 118 #define OVERRIDE_OPTIONS avr_override_options ()
 119
 120 #define CAN_DEBUG_WITHOUT_FP
 121
 122 #define BITS_BIG_ENDIAN 0
 123 #define BYTES_BIG_ENDIAN 0
 124 #define WORDS_BIG_ENDIAN 0
 125
 126 #ifdef IN_LIBGCC2
 127 /* This is to get correct SI and DI modes in libgcc2.c (32 and 64 bits).  */
 128 #define UNITS_PER_WORD 4
 129 #else
 130 /* Width of a word, in units (bytes).  */
 131 #define UNITS_PER_WORD 1
 132 #endif
 133
 134 #define POINTER_SIZE 16
 135
 136
 137 /* Maximum sized of reasonable data type
 138    DImode or Dfmode ...  */
 139 #define MAX_FIXED_MODE_SIZE 32
 140
 141 #define PARM_BOUNDARY 8
 142
 143 #define FUNCTION_BOUNDARY 8
 144
 145 #define EMPTY_FIELD_BOUNDARY 8
 146
 147 /* No data type wants to be aligned rounder than this.  */
 148 #define BIGGEST_ALIGNMENT 8
 149
 150 #define MAX_OFILE_ALIGNMENT (32768 * 8)
 151
 152 #define TARGET_VTABLE_ENTRY_ALIGN 8
 153
 154 #define STRICT_ALIGNMENT 0
 155
 156 #define INT_TYPE_SIZE (TARGET_INT8 ? 8 : 16)
 157 #define SHORT_TYPE_SIZE (INT_TYPE_SIZE == 8 ? INT_TYPE_SIZE : 16)
 158 #define LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 16 : 32)
 159 #define LONG_LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 32 : 64)
 160 #define FLOAT_TYPE_SIZE 32
 161 #define DOUBLE_TYPE_SIZE 32
 162 #define LONG_DOUBLE_TYPE_SIZE 32
 163
 164 #define DEFAULT_SIGNED_CHAR 1
 165
 166 #define SIZE_TYPE (INT_TYPE_SIZE == 8 ? "long unsigned int" : "unsigned int")
 167 #define PTRDIFF_TYPE (INT_TYPE_SIZE == 8 ? "long int" :"int")
 168
 169 #define WCHAR_TYPE_SIZE 16
 170
 171 #define FIRST_PSEUDO_REGISTER 36
 172
 173 #define FIXED_REGISTERS {\
 174   1,1,/* r0 r1 */\
 175   0,0,/* r2 r3 */\
 176   0,0,/* r4 r5 */\
 177   0,0,/* r6 r7 */\
 178   0,0,/* r8 r9 */\
 179   0,0,/* r10 r11 */\
 180   0,0,/* r12 r13 */\
 181   0,0,/* r14 r15 */\
 182   0,0,/* r16 r17 */\
 183   0,0,/* r18 r19 */\
 184   0,0,/* r20 r21 */\
 185   0,0,/* r22 r23 */\
 186   0,0,/* r24 r25 */\
 187   0,0,/* r26 r27 */\
 188   0,0,/* r28 r29 */\
 189   0,0,/* r30 r31 */\
 190   1,1,/*  STACK */\
 191   1,1 /* arg pointer */  }
 192
 193 #define CALL_USED_REGISTERS {                   \
 194   1,1,/* r0 r1 */                               \
 195     0,0,/* r2 r3 */                             \
 196     0,0,/* r4 r5 */                             \
 197     0,0,/* r6 r7 */                             \
 198     0,0,/* r8 r9 */                             \
 199     0,0,/* r10 r11 */                           \
 200     0,0,/* r12 r13 */                           \
 201     0,0,/* r14 r15 */                           \
 202     0,0,/* r16 r17 */                           \
 203     1,1,/* r18 r19 */                           \
 204     1,1,/* r20 r21 */                           \
 205     1,1,/* r22 r23 */                           \
 206     1,1,/* r24 r25 */                           \
 207     1,1,/* r26 r27 */                           \
 208     0,0,/* r28 r29 */                           \
 209     1,1,/* r30 r31 */                           \
 210     1,1,/*  STACK */                            \
 211     1,1 /* arg pointer */  }
 212
 213 #define REG_ALLOC_ORDER {                       \
 214     24,25,                                      \
 215     18,19,                                      \
 216     20,21,                                      \
 217     22,23,                                      \
 218     30,31,                                      \
 219     26,27,                                      \
 220     28,29,                                      \
 221     17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,    \
 222     0,1,                                        \
 223     32,33,34,35                                 \
 224     }
 225
 226 #define ORDER_REGS_FOR_LOCAL_ALLOC order_regs_for_local_alloc ()
 227
 228
 229 #define HARD_REGNO_NREGS(REGNO, MODE) ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
 230
 231 #define HARD_REGNO_MODE_OK(REGNO, MODE) avr_hard_regno_mode_ok(REGNO, MODE)
 232
 233 #define MODES_TIEABLE_P(MODE1, MODE2) 1
 234
 235 enum reg_class {
 236   NO_REGS,
 237   R0_REG,                       /* r0 */
 238   POINTER_X_REGS,               /* r26 - r27 */
 239   POINTER_Y_REGS,               /* r28 - r29 */
 240   POINTER_Z_REGS,               /* r30 - r31 */
 241   STACK_REG,                    /* STACK */
 242   BASE_POINTER_REGS,            /* r28 - r31 */
 243   POINTER_REGS,                 /* r26 - r31 */
 244   ADDW_REGS,                    /* r24 - r31 */
 245   SIMPLE_LD_REGS,               /* r16 - r23 */
 246   LD_REGS,                      /* r16 - r31 */
 247   NO_LD_REGS,                   /* r0 - r15 */
 248   GENERAL_REGS,                 /* r0 - r31 */
 249   ALL_REGS, LIM_REG_CLASSES
 250 };
 251
 252
 253 #define N_REG_CLASSES (int)LIM_REG_CLASSES
 254
 255 #define REG_CLASS_NAMES {                                       \
 256                  "NO_REGS",                                     \
 257                    "R0_REG",    /* r0 */                        \
 258                    "POINTER_X_REGS", /* r26 - r27 */            \
 259                    "POINTER_Y_REGS", /* r28 - r29 */            \
 260                    "POINTER_Z_REGS", /* r30 - r31 */            \
 261                    "STACK_REG", /* STACK */                     \
 262                    "BASE_POINTER_REGS", /* r28 - r31 */         \
 263                    "POINTER_REGS", /* r26 - r31 */              \
 264                    "ADDW_REGS", /* r24 - r31 */                 \
 265                    "SIMPLE_LD_REGS", /* r16 - r23 */            \
 266                    "LD_REGS",   /* r16 - r31 */                 \
 267                    "NO_LD_REGS", /* r0 - r15 */                 \
 268                    "GENERAL_REGS", /* r0 - r31 */               \
 269                    "ALL_REGS" }
 270
 271 #define REG_CLASS_CONTENTS {                                            \
 272   {0x00000000,0x00000000},      /* NO_REGS */                           \
 273   {0x00000001,0x00000000},      /* R0_REG */                            \
 274   {3 << REG_X,0x00000000},      /* POINTER_X_REGS, r26 - r27 */         \
 275   {3 << REG_Y,0x00000000},      /* POINTER_Y_REGS, r28 - r29 */         \
 276   {3 << REG_Z,0x00000000},      /* POINTER_Z_REGS, r30 - r31 */         \
 277   {0x00000000,0x00000003},      /* STACK_REG, STACK */                  \
 278   {(3 << REG_Y) | (3 << REG_Z),                                         \
 279      0x00000000},               /* BASE_POINTER_REGS, r28 - r31 */      \
 280   {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z),                          \
 281      0x00000000},               /* POINTER_REGS, r26 - r31 */           \
 282   {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z) | (3 << REG_W),           \
 283      0x00000000},               /* ADDW_REGS, r24 - r31 */              \
 284   {0x00ff0000,0x00000000},      /* SIMPLE_LD_REGS r16 - r23 */          \
 285   {(3 << REG_X)|(3 << REG_Y)|(3 << REG_Z)|(3 << REG_W)|(0xff << 16),    \
 286      0x00000000},       /* LD_REGS, r16 - r31 */                        \
 287   {0x0000ffff,0x00000000},      /* NO_LD_REGS  r0 - r15 */              \
 288   {0xffffffff,0x00000000},      /* GENERAL_REGS, r0 - r31 */            \
 289   {0xffffffff,0x00000003}       /* ALL_REGS */                          \
 290 }
 291
 292 #define REGNO_REG_CLASS(R) avr_regno_reg_class(R)
 293
 294 #define BASE_REG_CLASS (reload_completed ? BASE_POINTER_REGS : POINTER_REGS)
 295
 296 #define INDEX_REG_CLASS NO_REGS
 297
 298 #define REGNO_OK_FOR_BASE_P(r) (((r) < FIRST_PSEUDO_REGISTER            \
 299                                  && ((r) == REG_X                       \
 300                                      || (r) == REG_Y                    \
 301                                      || (r) == REG_Z                    \
 302                                      || (r) == ARG_POINTER_REGNUM))     \
 303                                 || (reg_renumber                        \
 304                                     && (reg_renumber[r] == REG_X        \
 305                                         || reg_renumber[r] == REG_Y     \
 306                                         || reg_renumber[r] == REG_Z     \
 307                                         || (reg_renumber[r]             \
 308                                             == ARG_POINTER_REGNUM))))
 309
 310 #define REGNO_OK_FOR_INDEX_P(NUM) 0
 311
 312 #define PREFERRED_RELOAD_CLASS(X, CLASS) preferred_reload_class(X,CLASS)
 313
 314 #define SMALL_REGISTER_CLASSES 1
 315
 316 #define CLASS_LIKELY_SPILLED_P(c) class_likely_spilled_p(c)
 317
 318 #define CLASS_MAX_NREGS(CLASS, MODE)   class_max_nregs (CLASS, MODE)
 319
 320 #define STACK_PUSH_CODE POST_DEC
 321
 322 #define STACK_GROWS_DOWNWARD
 323
 324 #define STARTING_FRAME_OFFSET 1
 325
 326 #define STACK_POINTER_OFFSET 1
 327
 328 #define FIRST_PARM_OFFSET(FUNDECL) 0
 329
 330 #define STACK_BOUNDARY 8
 331
 332 #define STACK_POINTER_REGNUM 32
 333
 334 #define FRAME_POINTER_REGNUM REG_Y
 335
 336 #define ARG_POINTER_REGNUM 34
 337
 338 #define STATIC_CHAIN_REGNUM 2
 339
 340 #define FRAME_POINTER_REQUIRED frame_pointer_required_p()
 341
 342 /* Offset from the frame pointer register value to the top of the stack.  */
 343 #define FRAME_POINTER_CFA_OFFSET(FNDECL) 0
 344
 345 #define ELIMINABLE_REGS {                                       \
 346       {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM},               \
 347         {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}            \
 348        ,{FRAME_POINTER_REGNUM+1,STACK_POINTER_REGNUM+1}}
 349
 350 #define CAN_ELIMINATE(FROM, TO) (((FROM) == ARG_POINTER_REGNUM             \
 351                                   && (TO) == FRAME_POINTER_REGNUM)         \
 352                                  || (((FROM) == FRAME_POINTER_REGNUM       \
 353                                       || (FROM) == FRAME_POINTER_REGNUM+1) \
 354                                      && ! FRAME_POINTER_REQUIRED           \
 355                                      ))
 356
 357 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)                    \
 358      OFFSET = initial_elimination_offset (FROM, TO)
 359
 360 #define RETURN_ADDR_RTX(count, x) \
 361   gen_rtx_MEM (Pmode, memory_address (Pmode, plus_constant (tem, 1)))
 362
 363 #define PUSH_ROUNDING(NPUSHED) (NPUSHED)
 364
 365 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
 366
 367 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) (function_arg (&(CUM), MODE, TYPE, NAMED))
 368
 369 typedef struct avr_args {
 370   int nregs;                    /* # registers available for passing */
 371   int regno;                    /* next available register number */
 372 } CUMULATIVE_ARGS;
 373
 374 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
 375   init_cumulative_args (&(CUM), FNTYPE, LIBNAME, FNDECL)
 376
 377 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)    \
 378   (function_arg_advance (&CUM, MODE, TYPE, NAMED))
 379
 380 #define FUNCTION_ARG_REGNO_P(r) function_arg_regno_p(r)
 381
 382 extern int avr_reg_order[];
 383
 384 #define RET_REGISTER avr_ret_register ()
 385
 386 #define FUNCTION_VALUE(VALTYPE, FUNC) avr_function_value (VALTYPE, FUNC)
 387
 388 #define LIBCALL_VALUE(MODE)  avr_libcall_value (MODE)
 389
 390 #define FUNCTION_VALUE_REGNO_P(N) ((int) (N) == RET_REGISTER)
 391
 392 #define DEFAULT_PCC_STRUCT_RETURN 0
 393
 394 #define EPILOGUE_USES(REGNO) avr_epilogue_uses(REGNO)
 395
 396 #define HAVE_POST_INCREMENT 1
 397 #define HAVE_PRE_DECREMENT 1
 398
 399 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
 400
 401 #define MAX_REGS_PER_ADDRESS 1
 402
 403 #ifdef REG_OK_STRICT
 404 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 405 {                                                       \
 406   if (legitimate_address_p (mode, operand, 1))          \
 407     goto ADDR;                                          \
 408 }
 409 #  else
 410 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 411 {                                                       \
 412   if (legitimate_address_p (mode, operand, 0))          \
 413     goto ADDR;                                          \
 414 }
 415 #endif
 416
 417 #define REG_OK_FOR_BASE_NOSTRICT_P(X) \
 418   (REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X))
 419
 420 #define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
 421
 422 #ifdef REG_OK_STRICT
 423 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X)
 424 #else
 425 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NOSTRICT_P (X)
 426 #endif
 427
 428 #define REG_OK_FOR_INDEX_P(X) 0
 429
 430 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN)                          \
 431 {                                                                       \
 432   (X) = legitimize_address (X, OLDX, MODE);                             \
 433   if (memory_address_p (MODE, X))                                       \
 434     goto WIN;                                                           \
 435 }
 436
 437 #define XEXP_(X,Y) (X)
 438 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN)    \
 439 do {                                                                        \
 440   if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC))     \
 441     {                                                                       \
 442       push_reload (XEXP (X,0), XEXP (X,0), &XEXP (X,0), &XEXP (X,0),        \
 443                    POINTER_REGS, GET_MODE (X),GET_MODE (X) , 0, 0,          \
 444                    OPNUM, RELOAD_OTHER);                                    \
 445       goto WIN;                                                             \
 446     }                                                                       \
 447   if (GET_CODE (X) == PLUS                                                  \
 448       && REG_P (XEXP (X, 0))                                                \
 449       && GET_CODE (XEXP (X, 1)) == CONST_INT                                \
 450       && INTVAL (XEXP (X, 1)) >= 1)                                         \
 451     {                                                                       \
 452       int fit = INTVAL (XEXP (X, 1)) <= (64 - GET_MODE_SIZE (MODE));        \
 453       if (fit)                                                              \
 454         {                                                                   \
 455           if (reg_equiv_address[REGNO (XEXP (X, 0))] != 0)                  \
 456             {                                                               \
 457               int regno = REGNO (XEXP (X, 0));                              \
 458               rtx mem = make_memloc (X, regno);                             \
 459               push_reload (XEXP (mem,0), NULL, &XEXP (mem,0), NULL,         \
 460                            POINTER_REGS, Pmode, VOIDmode, 0, 0,             \
 461                            1, ADDR_TYPE (TYPE));                            \
 462               push_reload (mem, NULL_RTX, &XEXP (X, 0), NULL,               \
 463                            BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
 464                            OPNUM, TYPE);                                    \
 465               goto WIN;                                                     \
 466             }                                                               \
 467           push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL,           \
 468                        BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,     \
 469                        OPNUM, TYPE);                                        \
 470           goto WIN;                                                         \
 471         }                                                                   \
 472       else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
 473         {                                                                   \
 474           push_reload (X, NULL_RTX, &X, NULL,                               \
 475                        POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,          \
 476                        OPNUM, TYPE);                                        \
 477           goto WIN;                                                         \
 478         }                                                                   \
 479     }                                                                       \
 480 } while(0)
 481
 482 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
 483
 484 #define LEGITIMATE_CONSTANT_P(X) 1
 485
 486 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
 487                                             : (TO) == STACK_REG ? 12 \
 488                                             : 2)
 489
 490 #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 :   \
 491                                          (MODE)==HImode ? 4 :   \
 492                                          (MODE)==SImode ? 8 :   \
 493                                          (MODE)==SFmode ? 8 : 16)
 494
 495 #define BRANCH_COST 0
 496
 497 #define SLOW_BYTE_ACCESS 0
 498
 499 #define NO_FUNCTION_CSE
 500
 501 #define TEXT_SECTION_ASM_OP "\t.text"
 502
 503 #define DATA_SECTION_ASM_OP "\t.data"
 504
 505 #define BSS_SECTION_ASM_OP "\t.section .bss"
 506
 507 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
 508    There are no shared libraries on this target, and these sections are
 509    placed in the read-only program memory, so they are not writable.  */
 510
 511 #undef CTORS_SECTION_ASM_OP
 512 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"a\",@progbits"
 513
 514 #undef DTORS_SECTION_ASM_OP
 515 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits"
 516
 517 #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor
 518
 519 #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
 520
 521 #define JUMP_TABLES_IN_TEXT_SECTION 0
 522
 523 #define ASM_COMMENT_START " ; "
 524
 525 #define ASM_APP_ON "/* #APP */\n"
 526
 527 #define ASM_APP_OFF "/* #NOAPP */\n"
 528
 529 /* Switch into a generic section.  */
 530 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
 531 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
 532
 533 #define ASM_OUTPUT_ASCII(FILE, P, SIZE)  gas_output_ascii (FILE,P,SIZE)
 534
 535 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C, STR) ((C) == '\n' || ((C) == '$'))
 536
 537 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)                     \
 538 do {                                                                       \
 539      fputs ("\t.comm ", (STREAM));                                         \
 540      assemble_name ((STREAM), (NAME));                                     \
 541      fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE));                \
 542 } while (0)
 543
 544 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED)                 \
 545   asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
 546
 547 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED)                   \
 548 do {                                                                    \
 549      fputs ("\t.lcomm ", (STREAM));                                     \
 550      assemble_name ((STREAM), (NAME));                                  \
 551      fprintf ((STREAM), ",%d\n", (int)(SIZE));                          \
 552 } while (0)
 553
 554 #undef TYPE_ASM_OP
 555 #undef SIZE_ASM_OP
 556 #undef WEAK_ASM_OP
 557 #define TYPE_ASM_OP     "\t.type\t"
 558 #define SIZE_ASM_OP     "\t.size\t"
 559 #define WEAK_ASM_OP     "\t.weak\t"
 560 /* Define the strings used for the special svr4 .type and .size directives.
 561    These strings generally do not vary from one system running svr4 to
 562    another, but if a given system (e.g. m88k running svr) needs to use
 563    different pseudo-op names for these, they may be overridden in the
 564    file which includes this one.  */
 565
 566
 567 #undef TYPE_OPERAND_FMT
 568 #define TYPE_OPERAND_FMT        "@%s"
 569 /* The following macro defines the format used to output the second
 570    operand of the .type assembler directive.  Different svr4 assemblers
 571    expect various different forms for this operand.  The one given here
 572    is just a default.  You may need to override it in your machine-
 573    specific tm.h file (depending upon the particulars of your assembler).  */
 574
 575 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 576 do {                                                            \
 577      ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");        \
 578      ASM_OUTPUT_LABEL (FILE, NAME);                             \
 579 } while (0)
 580
 581 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                    \
 582   do {                                                                  \
 583     if (!flag_inhibit_size_directive)                                   \
 584       ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                           \
 585   } while (0)
 586
 587 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 588 do {                                                                    \
 589   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");                     \
 590   size_directive_output = 0;                                            \
 591   if (!flag_inhibit_size_directive && DECL_SIZE (DECL))                 \
 592     {                                                                   \
 593       size_directive_output = 1;                                        \
 594       ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME,                            \
 595                                  int_size_in_bytes (TREE_TYPE (DECL))); \
 596     }                                                                   \
 597   ASM_OUTPUT_LABEL(FILE, NAME);                                         \
 598 } while (0)
 599
 600 #undef ASM_FINISH_DECLARE_OBJECT
 601 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 602 do {                                                                     \
 603      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 604      HOST_WIDE_INT size;                                                 \
 605      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 606          && ! AT_END && TOP_LEVEL                                        \
 607          && DECL_INITIAL (DECL) == error_mark_node                       \
 608          && !size_directive_output)                                      \
 609        {                                                                 \
 610          size_directive_output = 1;                                      \
 611          size = int_size_in_bytes (TREE_TYPE (DECL));                    \
 612          ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size);                   \
 613        }                                                                 \
 614    } while (0)
 615
 616
 617 #define ESCAPES \
 618 "\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\
 619 \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\
 620 \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\
 621 \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\
 622 \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\
 623 \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\
 624 \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\
 625 \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"
 626 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
 627    ASM_OUTPUT_LIMITED_STRING macros.  Each byte in the table
 628    corresponds to a particular byte value [0..255].  For any
 629    given byte value, if the value in the corresponding table
 630    position is zero, the given character can be output directly.
 631    If the table value is 1, the byte must be output as a \ooo
 632    octal escape.  If the tables value is anything else, then the
 633    byte value should be output as a \ followed by the value
 634    in the table.  Note that we can use standard UN*X escape
 635    sequences for many control characters, but we don't use
 636    \a to represent BEL because some svr4 assemblers (e.g. on
 637    the i386) don't know about that.  Also, we don't use \v
 638    since some versions of gas, such as 2.2 did not accept it.  */
 639
 640 #define STRING_LIMIT    ((unsigned) 64)
 641 #define STRING_ASM_OP   "\t.string\t"
 642 /* Some svr4 assemblers have a limit on the number of characters which
 643    can appear in the operand of a .string directive.  If your assembler
 644    has such a limitation, you should define STRING_LIMIT to reflect that
 645    limit.  Note that at least some svr4 assemblers have a limit on the
 646    actual number of bytes in the double-quoted string, and that they
 647    count each character in an escape sequence as one byte.  Thus, an
 648    escape sequence like \377 would count as four bytes.
 649
 650    If your target assembler doesn't support the .string directive, you
 651    should define this to zero.  */
 652
 653 /* Globalizing directive for a label.  */
 654 #define GLOBAL_ASM_OP ".global\t"
 655
 656 #define SET_ASM_OP      "\t.set\t"
 657
 658 #define ASM_WEAKEN_LABEL(FILE, NAME)    \
 659   do                                    \
 660     {                                   \
 661       fputs ("\t.weak\t", (FILE));      \
 662       assemble_name ((FILE), (NAME));   \
 663       fputc ('\n', (FILE));             \
 664     }                                   \
 665   while (0)
 666
 667 #define SUPPORTS_WEAK 1
 668
 669 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)        \
 670 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
 671
 672 #define HAS_INIT_SECTION 1
 673
 674 #define REGISTER_NAMES {                                \
 675   "r0","r1","r2","r3","r4","r5","r6","r7",              \
 676     "r8","r9","r10","r11","r12","r13","r14","r15",      \
 677     "r16","r17","r18","r19","r20","r21","r22","r23",    \
 678     "r24","r25","r26","r27","r28","r29","r30","r31",    \
 679     "__SP_L__","__SP_H__","argL","argH"}
 680
 681 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
 682
 683 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
 684
 685 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~' || (CODE) == '!')
 686
 687 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
 688
 689 #define USER_LABEL_PREFIX ""
 690
 691 #define ASSEMBLER_DIALECT AVR_HAVE_MOVW
 692
 693 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO)      \
 694 {                                               \
 695   gcc_assert (REGNO < 32);                      \
 696   fprintf (STREAM, "\tpush\tr%d", REGNO);       \
 697 }
 698
 699 #define ASM_OUTPUT_REG_POP(STREAM, REGNO)       \
 700 {                                               \
 701   gcc_assert (REGNO < 32);                      \
 702   fprintf (STREAM, "\tpop\tr%d", REGNO);        \
 703 }
 704
 705 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)          \
 706   avr_output_addr_vec_elt(STREAM, VALUE)
 707
 708 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
 709   (switch_to_section (progmem_section), \
 710    (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
 711
 712 #define ASM_OUTPUT_SKIP(STREAM, N)              \
 713 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
 714
 715 #define ASM_OUTPUT_ALIGN(STREAM, POWER)                 \
 716   do {                                                  \
 717       if ((POWER) > 1)                                  \
 718           fprintf (STREAM, "\t.p2align\t%d\n", POWER);  \
 719   } while (0)
 720
 721 #define CASE_VECTOR_MODE HImode
 722
 723 extern int avr_case_values_threshold;
 724
 725 #define CASE_VALUES_THRESHOLD avr_case_values_threshold
 726
 727 #undef WORD_REGISTER_OPERATIONS
 728
 729 #define MOVE_MAX 4
 730
 731 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
 732
 733 #define Pmode HImode
 734
 735 #define FUNCTION_MODE HImode
 736
 737 #define DOLLARS_IN_IDENTIFIERS 0
 738
 739 #define NO_DOLLAR_IN_LABEL 1
 740
 741 #define TRAMPOLINE_TEMPLATE(FILE) \
 742   internal_error ("trampolines not supported")
 743
 744 #define TRAMPOLINE_SIZE 4
 745
 746 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT)                             \
 747 {                                                                             \
 748   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT);    \
 749   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
 750 }
 751 /* Store in cc_status the expressions
 752    that the condition codes will describe
 753    after execution of an instruction whose pattern is EXP.
 754    Do not alter them if the instruction would not alter the cc's.  */
 755
 756 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
 757
 758 /* The add insns don't set overflow in a usable way.  */
 759 #define CC_OVERFLOW_UNUSABLE 01000
 760 /* The mov,and,or,xor insns don't set carry.  That's ok though as the
 761    Z bit is all we need when doing unsigned comparisons on the result of
 762    these insns (since they're always with 0).  However, conditions.h has
 763    CC_NO_OVERFLOW defined for this purpose.  Rename it to something more
 764    understandable.  */
 765 #define CC_NO_CARRY CC_NO_OVERFLOW
 766
 767
 768 /* Output assembler code to FILE to increment profiler label # LABELNO
 769    for profiling a function entry.  */
 770
 771 #define FUNCTION_PROFILER(FILE, LABELNO)  \
 772   fprintf (FILE, "/* profiler %d */", (LABELNO))
 773
 774 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
 775                                           adjust_insn_length (INSN, LENGTH))
 776
 777 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
 778
 779 #define CC1_SPEC "%{profile:-p}"
 780
 781 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
 782     %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
 783     %{!fexceptions:-fno-exceptions}"
 784 /* A C string constant that tells the GCC driver program options to
 785    pass to `cc1plus'.  */
 786
 787 #define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;mmcu=avr35:-mmcu=avr3;mmcu=avr31:-mmcu=avr3;mmcu=avr51:-mmcu=avr5;\
 788 mmcu=*:-mmcu=%*}"
 789
 790 #define LINK_SPEC "\
 791 %{mrelax:--relax\
 792          %{mpmem-wrap-around:%{mmcu=at90usb8*:--pmem-wrap-around=8k}\
 793                              %{mmcu=atmega16*:--pmem-wrap-around=16k}\
 794                              %{mmcu=atmega32*|\
 795                                mmcu=at90can32*:--pmem-wrap-around=32k}\
 796                              %{mmcu=atmega64*|\
 797                                mmcu=at90can64*|\
 798                                mmcu=at90usb64*:--pmem-wrap-around=64k}}}\
 799 %{!mmcu*: -m avr2}\
 800 %{mmcu=at90s1200|\
 801   mmcu=attiny11|\
 802   mmcu=attiny12|\
 803   mmcu=attiny15|\
 804   mmcu=attiny28: -m avr1}\
 805 %{mmcu=attiny22|\
 806   mmcu=attiny26|\
 807   mmcu=at90s2*|\
 808   mmcu=at90s4*|\
 809   mmcu=at90s8*|\
 810   mmcu=at90c8*|\
 811   mmcu=at86rf401|\
 812   mmcu=attiny13|\
 813   mmcu=attiny2313|\
 814   mmcu=attiny24|\
 815   mmcu=attiny25|\
 816   mmcu=attiny261|\
 817   mmcu=attiny4*|\
 818   mmcu=attiny8*: -m avr2}\
 819 %{mmcu=atmega103|\
 820   mmcu=at43*|\
 821   mmcu=at76*|\
 822   mmcu=at90usb82|\
 823   mmcu=at90usb162: -m avr3}\
 824 %{mmcu=atmega8*|\
 825   mmcu=atmega48*|\
 826   mmcu=at90pwm1|\
 827   mmcu=at90pwm2|\
 828   mmcu=at90pwm2b|\
 829   mmcu=at90pwm3|\
 830   mmcu=at90pwm3b: -m avr4}\
 831 %{mmcu=atmega16*|\
 832   mmcu=atmega32*|\
 833   mmcu=atmega406|\
 834   mmcu=atmega64*|\
 835   mmcu=atmega128*|\
 836   mmcu=at90can*|\
 837   mmcu=at90pwm216|\
 838   mmcu=at90pwm316|\
 839   mmcu=at90usb64*|\
 840   mmcu=at90usb128*|\
 841   mmcu=at94k: -m avr5}\
 842 %{mmcu=atmega256*:-m avr6}\
 843 %{mmcu=atmega324*|\
 844   mmcu=atmega325*|\
 845   mmcu=atmega328p|\
 846   mmcu=atmega329*|\
 847   mmcu=atmega406|\
 848   mmcu=atmega48*|\
 849   mmcu=atmega88*|\
 850   mmcu=atmega64|\
 851   mmcu=atmega644*|\
 852   mmcu=atmega645*|\
 853   mmcu=atmega649*|\
 854   mmcu=atmega128|\
 855   mmcu=atmega1284p|\
 856   mmcu=atmega162|\
 857   mmcu=atmega164*|\
 858   mmcu=atmega165*|\
 859   mmcu=atmega168*|\
 860   mmcu=atmega169*|\
 861   mmcu=atmega8hva|\
 862   mmcu=atmega16hva|\
 863   mmcu=atmega32hvb|\
 864   mmcu=attiny48|\
 865   mmcu=attiny88|\
 866   mmcu=at90can*|\
 867   mmcu=at90pwm*|\
 868   mmcu=at90usb*: -Tdata 0x800100}\
 869 %{mmcu=atmega640|\
 870   mmcu=atmega1280|\
 871   mmcu=atmega1281|\
 872   mmcu=atmega256*: -Tdata 0x800200} "
 873
 874 #define LIB_SPEC \
 875   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
 876
 877 #define LIBSTDCXX "-lgcc"
 878 /* No libstdc++ for now.  Empty string doesn't work.  */
 879
 880 #define LIBGCC_SPEC \
 881   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
 882
 883 #define STARTFILE_SPEC "%(crt_binutils)"
 884
 885 #define ENDFILE_SPEC ""
 886
 887 #define CRT_BINUTILS_SPECS "\
 888 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
 889 %{mmcu=attiny11:crttn11.o%s} \
 890 %{mmcu=attiny12:crttn12.o%s} \
 891 %{mmcu=attiny15:crttn15.o%s} \
 892 %{mmcu=attiny28:crttn28.o%s} \
 893 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
 894 %{mmcu=at90s2313:crts2313.o%s} \
 895 %{mmcu=at90s2323:crts2323.o%s} \
 896 %{mmcu=at90s2333:crts2333.o%s} \
 897 %{mmcu=at90s2343:crts2343.o%s} \
 898 %{mmcu=attiny22:crttn22.o%s} \
 899 %{mmcu=attiny26:crttn26.o%s} \
 900 %{mmcu=at90s4433:crts4433.o%s} \
 901 %{mmcu=at90s4414:crts4414.o%s} \
 902 %{mmcu=at90s4434:crts4434.o%s} \
 903 %{mmcu=at90c8534:crtc8534.o%s} \
 904 %{mmcu=at90s8535:crts8535.o%s} \
 905 %{mmcu=at86rf401:crt86401.o%s} \
 906 %{mmcu=attiny13:crttn13.o%s} \
 907 %{mmcu=attiny2313|mmcu=avr25:crttn2313.o%s} \
 908 %{mmcu=attiny24:crttn24.o%s} \
 909 %{mmcu=attiny44:crttn44.o%s} \
 910 %{mmcu=attiny84:crttn84.o%s} \
 911 %{mmcu=attiny25:crttn25.o%s} \
 912 %{mmcu=attiny45:crttn45.o%s} \
 913 %{mmcu=attiny85:crttn85.o%s} \
 914 %{mmcu=attiny261:crttn261.o%s} \
 915 %{mmcu=attiny461:crttn461.o%s} \
 916 %{mmcu=attiny861:crttn861.o%s} \
 917 %{mmcu=attiny43u:crttn43u.o%s} \
 918 %{mmcu=attiny48:crttn48.o%s} \
 919 %{mmcu=attiny88:crttn88.o%s} \
 920 %{mmcu=at43usb320|mmcu=avr3:crt43320.o%s} \
 921 %{mmcu=at43usb355:crt43355.o%s} \
 922 %{mmcu=at76c711:crt76711.o%s} \
 923 %{mmcu=atmega103|mmcu=avr31:crtm103.o%s} \
 924 %{mmcu=at90usb162|mmcu=avr35:crtusb162.o%s} \
 925 %{mmcu=at90usb82:crtusb82.o%s} \
 926 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
 927 %{mmcu=atmega48:crtm48.o%s} \
 928 %{mmcu=atmega48p:crtm48p.o%s} \
 929 %{mmcu=atmega88:crtm88.o%s} \
 930 %{mmcu=atmega88p:crtm88p.o%s} \
 931 %{mmcu=atmega8515:crtm8515.o%s} \
 932 %{mmcu=atmega8535:crtm8535.o%s} \
 933 %{mmcu=at90pwm1:crt90pwm1.o%s} \
 934 %{mmcu=at90pwm2:crt90pwm2.o%s} \
 935 %{mmcu=at90pwm2b:crt90pwm2b.o%s} \
 936 %{mmcu=at90pwm3:crt90pwm3.o%s} \
 937 %{mmcu=at90pwm3b:crt90pwm3b.o%s} \
 938 %{mmcu=atmega16:crtm16.o%s} \
 939 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
 940 %{mmcu=atmega162:crtm162.o%s} \
 941 %{mmcu=atmega163:crtm163.o%s} \
 942 %{mmcu=atmega164p:crtm164p.o%s} \
 943 %{mmcu=atmega165:crtm165.o%s} \
 944 %{mmcu=atmega165p:crtm165p.o%s} \
 945 %{mmcu=atmega168:crtm168.o%s} \
 946 %{mmcu=atmega168p:crtm168p.o%s} \
 947 %{mmcu=atmega169:crtm169.o%s} \
 948 %{mmcu=atmega169p:crtm169p.o%s} \
 949 %{mmcu=atmega32:crtm32.o%s} \
 950 %{mmcu=atmega323:crtm323.o%s} \
 951 %{mmcu=atmega324p:crtm324p.o%s} \
 952 %{mmcu=atmega325:crtm325.o%s} \
 953 %{mmcu=atmega325p:crtm325p.o%s} \
 954 %{mmcu=atmega3250:crtm3250.o%s} \
 955 %{mmcu=atmega3250p:crtm3250p.o%s} \
 956 %{mmcu=atmega328p:crtm328p.o%s} \
 957 %{mmcu=atmega329:crtm329.o%s} \
 958 %{mmcu=atmega329p:crtm329p.o%s} \
 959 %{mmcu=atmega3290:crtm3290.o%s} \
 960 %{mmcu=atmega3290p:crtm3290p.o%s} \
 961 %{mmcu=atmega32hvb:crtm32hvb.o%s} \
 962 %{mmcu=atmega406:crtm406.o%s} \
 963 %{mmcu=atmega64:crtm64.o%s} \
 964 %{mmcu=atmega640:crtm640.o%s} \
 965 %{mmcu=atmega644:crtm644.o%s} \
 966 %{mmcu=atmega644p:crtm644p.o%s} \
 967 %{mmcu=atmega645:crtm645.o%s} \
 968 %{mmcu=atmega6450:crtm6450.o%s} \
 969 %{mmcu=atmega649:crtm649.o%s} \
 970 %{mmcu=atmega6490:crtm6490.o%s} \
 971 %{mmcu=atmega8hva:crtm8hva.o%s} \
 972 %{mmcu=atmega16hva:crtm16hva.o%s} \
 973 %{mmcu=at90can32:crtcan32.o%s} \
 974 %{mmcu=at90can64:crtcan64.o%s} \
 975 %{mmcu=at90pwm216:crt90pwm216.o%s} \
 976 %{mmcu=at90pwm316:crt90pwm316.o%s} \
 977 %{mmcu=at90usb646:crtusb646.o%s} \
 978 %{mmcu=at90usb647:crtusb647.o%s} \
 979 %{mmcu=at94k:crtat94k.o%s} \
 980 %{mmcu=atmega128|mmcu=avr51:crtm128.o%s} \
 981 %{mmcu=atmega1280:crtm1280.o%s} \
 982 %{mmcu=atmega1281:crtm1281.o%s} \
 983 %{mmcu=atmega1284p:crtm1284p.o%s} \
 984 %{mmcu=atmega2560:crtm2560.o%s} \
 985 %{mmcu=atmega2561:crtm2561.o%s} \
 986 %{mmcu=at90can128:crtcan128.o%s} \
 987 %{mmcu=at90usb1286:crtusb1286.o%s} \
 988 %{mmcu=at90usb1287:crtusb1287.o%s}"
 989
 990 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
 991
 992 /* This is the default without any -mmcu=* option (AT90S*).  */
 993 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
 994
 995 /* This is undefined macro for collect2 disabling */
 996 #define LINKER_NAME "ld"
 997
 998 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
 999   TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
1000
1001 /* Note that the other files fail to use these
1002    in some of the places where they should.  */
1003
1004 #if defined(__STDC__) || defined(ALMOST_STDC)
1005 #define AS2(a,b,c) #a " " #b "," #c
1006 #define AS2C(b,c) " " #b "," #c
1007 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
1008 #define AS1(a,b) #a " " #b
1009 #else
1010 #define AS1(a,b) "a     b"
1011 #define AS2(a,b,c) "a   b,c"
1012 #define AS2C(b,c) " b,c"
1013 #define AS3(a,b,c,d) "a b,c,d"
1014 #endif
1015 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
1016 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
1017 #define CR_TAB "\n\t"
1018
1019 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
1020
1021 #define DWARF2_DEBUGGING_INFO 1
1022
1023 #define DWARF2_ADDR_SIZE 4
1024
1025 #define OBJECT_FORMAT_ELF
1026
1027 /* A C structure for machine-specific, per-function data.
1028    This is added to the cfun structure.  */
1029 struct machine_function GTY(())
1030 {
1031   /* 'true' - if the current function is a leaf function.  */
1032   int is_leaf;
1033
1034   /* 'true' - if current function is a naked function.  */
1035   int is_naked;
1036
1037   /* 'true' - if current function is an interrupt function
1038      as specified by the "interrupt" attribute.  */
1039   int is_interrupt;
1040
1041   /* 'true' - if current function is a signal function
1042      as specified by the "signal" attribute.  */
1043   int is_signal;
1044
1045   /* 'true' - if current function is a signal function
1046      as specified by the "OS_task" attribute.  */
1047   int is_OS_task;
1048 };