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 /* The following macro defines cover classes for Integrated Register
 295    Allocator.  Cover classes is a set of non-intersected register
 296    classes covering all hard registers used for register allocation
 297    purpose.  Any move between two registers of a cover class should be
 298    cheaper than load or store of the registers.  The macro value is
 299    array of register classes with LIM_REG_CLASSES used as the end
 300    marker.  */
 301
 302 #define IRA_COVER_CLASSES               \
 303 {                                       \
 304   GENERAL_REGS, LIM_REG_CLASSES         \
 305 }
 306
 307 #define BASE_REG_CLASS (reload_completed ? BASE_POINTER_REGS : POINTER_REGS)
 308
 309 #define INDEX_REG_CLASS NO_REGS
 310
 311 #define REGNO_OK_FOR_BASE_P(r) (((r) < FIRST_PSEUDO_REGISTER            \
 312                                  && ((r) == REG_X                       \
 313                                      || (r) == REG_Y                    \
 314                                      || (r) == REG_Z                    \
 315                                      || (r) == ARG_POINTER_REGNUM))     \
 316                                 || (reg_renumber                        \
 317                                     && (reg_renumber[r] == REG_X        \
 318                                         || reg_renumber[r] == REG_Y     \
 319                                         || reg_renumber[r] == REG_Z     \
 320                                         || (reg_renumber[r]             \
 321                                             == ARG_POINTER_REGNUM))))
 322
 323 #define REGNO_OK_FOR_INDEX_P(NUM) 0
 324
 325 #define PREFERRED_RELOAD_CLASS(X, CLASS) preferred_reload_class(X,CLASS)
 326
 327 #define SMALL_REGISTER_CLASSES 1
 328
 329 #define CLASS_LIKELY_SPILLED_P(c) class_likely_spilled_p(c)
 330
 331 #define CLASS_MAX_NREGS(CLASS, MODE)   class_max_nregs (CLASS, MODE)
 332
 333 #define STACK_PUSH_CODE POST_DEC
 334
 335 #define STACK_GROWS_DOWNWARD
 336
 337 #define STARTING_FRAME_OFFSET 1
 338
 339 #define STACK_POINTER_OFFSET 1
 340
 341 #define FIRST_PARM_OFFSET(FUNDECL) 0
 342
 343 #define STACK_BOUNDARY 8
 344
 345 #define STACK_POINTER_REGNUM 32
 346
 347 #define FRAME_POINTER_REGNUM REG_Y
 348
 349 #define ARG_POINTER_REGNUM 34
 350
 351 #define STATIC_CHAIN_REGNUM 2
 352
 353 #define FRAME_POINTER_REQUIRED frame_pointer_required_p()
 354
 355 /* Offset from the frame pointer register value to the top of the stack.  */
 356 #define FRAME_POINTER_CFA_OFFSET(FNDECL) 0
 357
 358 #define ELIMINABLE_REGS {                                       \
 359       {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM},               \
 360         {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}            \
 361        ,{FRAME_POINTER_REGNUM+1,STACK_POINTER_REGNUM+1}}
 362
 363 #define CAN_ELIMINATE(FROM, TO) (((FROM) == ARG_POINTER_REGNUM             \
 364                                   && (TO) == FRAME_POINTER_REGNUM)         \
 365                                  || (((FROM) == FRAME_POINTER_REGNUM       \
 366                                       || (FROM) == FRAME_POINTER_REGNUM+1) \
 367                                      && ! FRAME_POINTER_REQUIRED           \
 368                                      ))
 369
 370 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)                    \
 371      OFFSET = initial_elimination_offset (FROM, TO)
 372
 373 #define RETURN_ADDR_RTX(count, x) \
 374   gen_rtx_MEM (Pmode, memory_address (Pmode, plus_constant (tem, 1)))
 375
 376 #define PUSH_ROUNDING(NPUSHED) (NPUSHED)
 377
 378 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
 379
 380 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) (function_arg (&(CUM), MODE, TYPE, NAMED))
 381
 382 typedef struct avr_args {
 383   int nregs;                    /* # registers available for passing */
 384   int regno;                    /* next available register number */
 385 } CUMULATIVE_ARGS;
 386
 387 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
 388   init_cumulative_args (&(CUM), FNTYPE, LIBNAME, FNDECL)
 389
 390 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)    \
 391   (function_arg_advance (&CUM, MODE, TYPE, NAMED))
 392
 393 #define FUNCTION_ARG_REGNO_P(r) function_arg_regno_p(r)
 394
 395 extern int avr_reg_order[];
 396
 397 #define RET_REGISTER avr_ret_register ()
 398
 399 #define FUNCTION_VALUE(VALTYPE, FUNC) avr_function_value (VALTYPE, FUNC)
 400
 401 #define LIBCALL_VALUE(MODE)  avr_libcall_value (MODE)
 402
 403 #define FUNCTION_VALUE_REGNO_P(N) ((int) (N) == RET_REGISTER)
 404
 405 #define DEFAULT_PCC_STRUCT_RETURN 0
 406
 407 #define EPILOGUE_USES(REGNO) avr_epilogue_uses(REGNO)
 408
 409 #define HAVE_POST_INCREMENT 1
 410 #define HAVE_PRE_DECREMENT 1
 411
 412 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
 413
 414 #define MAX_REGS_PER_ADDRESS 1
 415
 416 #ifdef REG_OK_STRICT
 417 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 418 {                                                       \
 419   if (legitimate_address_p (mode, operand, 1))          \
 420     goto ADDR;                                          \
 421 }
 422 #  else
 423 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 424 {                                                       \
 425   if (legitimate_address_p (mode, operand, 0))          \
 426     goto ADDR;                                          \
 427 }
 428 #endif
 429
 430 #define REG_OK_FOR_BASE_NOSTRICT_P(X) \
 431   (REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X))
 432
 433 #define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
 434
 435 #ifdef REG_OK_STRICT
 436 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X)
 437 #else
 438 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NOSTRICT_P (X)
 439 #endif
 440
 441 #define REG_OK_FOR_INDEX_P(X) 0
 442
 443 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN)                          \
 444 {                                                                       \
 445   (X) = legitimize_address (X, OLDX, MODE);                             \
 446   if (memory_address_p (MODE, X))                                       \
 447     goto WIN;                                                           \
 448 }
 449
 450 #define XEXP_(X,Y) (X)
 451 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN)    \
 452 do {                                                                        \
 453   if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC))     \
 454     {                                                                       \
 455       push_reload (XEXP (X,0), XEXP (X,0), &XEXP (X,0), &XEXP (X,0),        \
 456                    POINTER_REGS, GET_MODE (X),GET_MODE (X) , 0, 0,          \
 457                    OPNUM, RELOAD_OTHER);                                    \
 458       goto WIN;                                                             \
 459     }                                                                       \
 460   if (GET_CODE (X) == PLUS                                                  \
 461       && REG_P (XEXP (X, 0))                                                \
 462       && GET_CODE (XEXP (X, 1)) == CONST_INT                                \
 463       && INTVAL (XEXP (X, 1)) >= 1)                                         \
 464     {                                                                       \
 465       int fit = INTVAL (XEXP (X, 1)) <= (64 - GET_MODE_SIZE (MODE));        \
 466       if (fit)                                                              \
 467         {                                                                   \
 468           if (reg_equiv_address[REGNO (XEXP (X, 0))] != 0)                  \
 469             {                                                               \
 470               int regno = REGNO (XEXP (X, 0));                              \
 471               rtx mem = make_memloc (X, regno);                             \
 472               push_reload (XEXP (mem,0), NULL, &XEXP (mem,0), NULL,         \
 473                            POINTER_REGS, Pmode, VOIDmode, 0, 0,             \
 474                            1, ADDR_TYPE (TYPE));                            \
 475               push_reload (mem, NULL_RTX, &XEXP (X, 0), NULL,               \
 476                            BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
 477                            OPNUM, TYPE);                                    \
 478               goto WIN;                                                     \
 479             }                                                               \
 480           push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL,           \
 481                        BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,     \
 482                        OPNUM, TYPE);                                        \
 483           goto WIN;                                                         \
 484         }                                                                   \
 485       else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
 486         {                                                                   \
 487           push_reload (X, NULL_RTX, &X, NULL,                               \
 488                        POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,          \
 489                        OPNUM, TYPE);                                        \
 490           goto WIN;                                                         \
 491         }                                                                   \
 492     }                                                                       \
 493 } while(0)
 494
 495 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
 496
 497 #define LEGITIMATE_CONSTANT_P(X) 1
 498
 499 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
 500                                             : (TO) == STACK_REG ? 12 \
 501                                             : 2)
 502
 503 #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 :   \
 504                                          (MODE)==HImode ? 4 :   \
 505                                          (MODE)==SImode ? 8 :   \
 506                                          (MODE)==SFmode ? 8 : 16)
 507
 508 #define BRANCH_COST 0
 509
 510 #define SLOW_BYTE_ACCESS 0
 511
 512 #define NO_FUNCTION_CSE
 513
 514 #define TEXT_SECTION_ASM_OP "\t.text"
 515
 516 #define DATA_SECTION_ASM_OP "\t.data"
 517
 518 #define BSS_SECTION_ASM_OP "\t.section .bss"
 519
 520 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
 521    There are no shared libraries on this target, and these sections are
 522    placed in the read-only program memory, so they are not writable.  */
 523
 524 #undef CTORS_SECTION_ASM_OP
 525 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"a\",@progbits"
 526
 527 #undef DTORS_SECTION_ASM_OP
 528 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits"
 529
 530 #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor
 531
 532 #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
 533
 534 #define JUMP_TABLES_IN_TEXT_SECTION 0
 535
 536 #define ASM_COMMENT_START " ; "
 537
 538 #define ASM_APP_ON "/* #APP */\n"
 539
 540 #define ASM_APP_OFF "/* #NOAPP */\n"
 541
 542 /* Switch into a generic section.  */
 543 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
 544 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
 545
 546 #define ASM_OUTPUT_ASCII(FILE, P, SIZE)  gas_output_ascii (FILE,P,SIZE)
 547
 548 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C, STR) ((C) == '\n' || ((C) == '$'))
 549
 550 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)                     \
 551 do {                                                                       \
 552      fputs ("\t.comm ", (STREAM));                                         \
 553      assemble_name ((STREAM), (NAME));                                     \
 554      fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE));                \
 555 } while (0)
 556
 557 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED)                 \
 558   asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
 559
 560 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED)                   \
 561 do {                                                                    \
 562      fputs ("\t.lcomm ", (STREAM));                                     \
 563      assemble_name ((STREAM), (NAME));                                  \
 564      fprintf ((STREAM), ",%d\n", (int)(SIZE));                          \
 565 } while (0)
 566
 567 #undef TYPE_ASM_OP
 568 #undef SIZE_ASM_OP
 569 #undef WEAK_ASM_OP
 570 #define TYPE_ASM_OP     "\t.type\t"
 571 #define SIZE_ASM_OP     "\t.size\t"
 572 #define WEAK_ASM_OP     "\t.weak\t"
 573 /* Define the strings used for the special svr4 .type and .size directives.
 574    These strings generally do not vary from one system running svr4 to
 575    another, but if a given system (e.g. m88k running svr) needs to use
 576    different pseudo-op names for these, they may be overridden in the
 577    file which includes this one.  */
 578
 579
 580 #undef TYPE_OPERAND_FMT
 581 #define TYPE_OPERAND_FMT        "@%s"
 582 /* The following macro defines the format used to output the second
 583    operand of the .type assembler directive.  Different svr4 assemblers
 584    expect various different forms for this operand.  The one given here
 585    is just a default.  You may need to override it in your machine-
 586    specific tm.h file (depending upon the particulars of your assembler).  */
 587
 588 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 589 do {                                                            \
 590      ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");        \
 591      ASM_OUTPUT_LABEL (FILE, NAME);                             \
 592 } while (0)
 593
 594 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                    \
 595   do {                                                                  \
 596     if (!flag_inhibit_size_directive)                                   \
 597       ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                           \
 598   } while (0)
 599
 600 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 601 do {                                                                    \
 602   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");                     \
 603   size_directive_output = 0;                                            \
 604   if (!flag_inhibit_size_directive && DECL_SIZE (DECL))                 \
 605     {                                                                   \
 606       size_directive_output = 1;                                        \
 607       ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME,                            \
 608                                  int_size_in_bytes (TREE_TYPE (DECL))); \
 609     }                                                                   \
 610   ASM_OUTPUT_LABEL(FILE, NAME);                                         \
 611 } while (0)
 612
 613 #undef ASM_FINISH_DECLARE_OBJECT
 614 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 615 do {                                                                     \
 616      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 617      HOST_WIDE_INT size;                                                 \
 618      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 619          && ! AT_END && TOP_LEVEL                                        \
 620          && DECL_INITIAL (DECL) == error_mark_node                       \
 621          && !size_directive_output)                                      \
 622        {                                                                 \
 623          size_directive_output = 1;                                      \
 624          size = int_size_in_bytes (TREE_TYPE (DECL));                    \
 625          ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size);                   \
 626        }                                                                 \
 627    } while (0)
 628
 629
 630 #define ESCAPES \
 631 "\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\
 632 \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\
 633 \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\
 634 \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\
 635 \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\
 636 \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\
 637 \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\
 638 \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"
 639 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
 640    ASM_OUTPUT_LIMITED_STRING macros.  Each byte in the table
 641    corresponds to a particular byte value [0..255].  For any
 642    given byte value, if the value in the corresponding table
 643    position is zero, the given character can be output directly.
 644    If the table value is 1, the byte must be output as a \ooo
 645    octal escape.  If the tables value is anything else, then the
 646    byte value should be output as a \ followed by the value
 647    in the table.  Note that we can use standard UN*X escape
 648    sequences for many control characters, but we don't use
 649    \a to represent BEL because some svr4 assemblers (e.g. on
 650    the i386) don't know about that.  Also, we don't use \v
 651    since some versions of gas, such as 2.2 did not accept it.  */
 652
 653 #define STRING_LIMIT    ((unsigned) 64)
 654 #define STRING_ASM_OP   "\t.string\t"
 655 /* Some svr4 assemblers have a limit on the number of characters which
 656    can appear in the operand of a .string directive.  If your assembler
 657    has such a limitation, you should define STRING_LIMIT to reflect that
 658    limit.  Note that at least some svr4 assemblers have a limit on the
 659    actual number of bytes in the double-quoted string, and that they
 660    count each character in an escape sequence as one byte.  Thus, an
 661    escape sequence like \377 would count as four bytes.
 662
 663    If your target assembler doesn't support the .string directive, you
 664    should define this to zero.  */
 665
 666 /* Globalizing directive for a label.  */
 667 #define GLOBAL_ASM_OP ".global\t"
 668
 669 #define SET_ASM_OP      "\t.set\t"
 670
 671 #define ASM_WEAKEN_LABEL(FILE, NAME)    \
 672   do                                    \
 673     {                                   \
 674       fputs ("\t.weak\t", (FILE));      \
 675       assemble_name ((FILE), (NAME));   \
 676       fputc ('\n', (FILE));             \
 677     }                                   \
 678   while (0)
 679
 680 #define SUPPORTS_WEAK 1
 681
 682 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)        \
 683 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
 684
 685 #define HAS_INIT_SECTION 1
 686
 687 #define REGISTER_NAMES {                                \
 688   "r0","r1","r2","r3","r4","r5","r6","r7",              \
 689     "r8","r9","r10","r11","r12","r13","r14","r15",      \
 690     "r16","r17","r18","r19","r20","r21","r22","r23",    \
 691     "r24","r25","r26","r27","r28","r29","r30","r31",    \
 692     "__SP_L__","__SP_H__","argL","argH"}
 693
 694 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
 695
 696 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
 697
 698 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~' || (CODE) == '!')
 699
 700 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
 701
 702 #define USER_LABEL_PREFIX ""
 703
 704 #define ASSEMBLER_DIALECT AVR_HAVE_MOVW
 705
 706 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO)      \
 707 {                                               \
 708   gcc_assert (REGNO < 32);                      \
 709   fprintf (STREAM, "\tpush\tr%d", REGNO);       \
 710 }
 711
 712 #define ASM_OUTPUT_REG_POP(STREAM, REGNO)       \
 713 {                                               \
 714   gcc_assert (REGNO < 32);                      \
 715   fprintf (STREAM, "\tpop\tr%d", REGNO);        \
 716 }
 717
 718 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)          \
 719   avr_output_addr_vec_elt(STREAM, VALUE)
 720
 721 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
 722   (switch_to_section (progmem_section), \
 723    (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
 724
 725 #define ASM_OUTPUT_SKIP(STREAM, N)              \
 726 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
 727
 728 #define ASM_OUTPUT_ALIGN(STREAM, POWER)                 \
 729   do {                                                  \
 730       if ((POWER) > 1)                                  \
 731           fprintf (STREAM, "\t.p2align\t%d\n", POWER);  \
 732   } while (0)
 733
 734 #define CASE_VECTOR_MODE HImode
 735
 736 extern int avr_case_values_threshold;
 737
 738 #define CASE_VALUES_THRESHOLD avr_case_values_threshold
 739
 740 #undef WORD_REGISTER_OPERATIONS
 741
 742 #define MOVE_MAX 4
 743
 744 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
 745
 746 #define Pmode HImode
 747
 748 #define FUNCTION_MODE HImode
 749
 750 #define DOLLARS_IN_IDENTIFIERS 0
 751
 752 #define NO_DOLLAR_IN_LABEL 1
 753
 754 #define TRAMPOLINE_TEMPLATE(FILE) \
 755   internal_error ("trampolines not supported")
 756
 757 #define TRAMPOLINE_SIZE 4
 758
 759 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT)                             \
 760 {                                                                             \
 761   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT);    \
 762   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
 763 }
 764 /* Store in cc_status the expressions
 765    that the condition codes will describe
 766    after execution of an instruction whose pattern is EXP.
 767    Do not alter them if the instruction would not alter the cc's.  */
 768
 769 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
 770
 771 /* The add insns don't set overflow in a usable way.  */
 772 #define CC_OVERFLOW_UNUSABLE 01000
 773 /* The mov,and,or,xor insns don't set carry.  That's ok though as the
 774    Z bit is all we need when doing unsigned comparisons on the result of
 775    these insns (since they're always with 0).  However, conditions.h has
 776    CC_NO_OVERFLOW defined for this purpose.  Rename it to something more
 777    understandable.  */
 778 #define CC_NO_CARRY CC_NO_OVERFLOW
 779
 780
 781 /* Output assembler code to FILE to increment profiler label # LABELNO
 782    for profiling a function entry.  */
 783
 784 #define FUNCTION_PROFILER(FILE, LABELNO)  \
 785   fprintf (FILE, "/* profiler %d */", (LABELNO))
 786
 787 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
 788                                           adjust_insn_length (INSN, LENGTH))
 789
 790 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
 791
 792 #define CC1_SPEC "%{profile:-p}"
 793
 794 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
 795     %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
 796     %{!fexceptions:-fno-exceptions}"
 797 /* A C string constant that tells the GCC driver program options to
 798    pass to `cc1plus'.  */
 799
 800 #define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;mmcu=avr35:-mmcu=avr3;mmcu=avr31:-mmcu=avr3;mmcu=avr51:-mmcu=avr5;\
 801 mmcu=*:-mmcu=%*}"
 802
 803 #define LINK_SPEC "\
 804 %{mrelax:--relax\
 805          %{mpmem-wrap-around:%{mmcu=at90usb8*:--pmem-wrap-around=8k}\
 806                              %{mmcu=atmega16*:--pmem-wrap-around=16k}\
 807                              %{mmcu=atmega32*|\
 808                                mmcu=at90can32*:--pmem-wrap-around=32k}\
 809                              %{mmcu=atmega64*|\
 810                                mmcu=at90can64*|\
 811                                mmcu=at90usb64*:--pmem-wrap-around=64k}}}\
 812 %{!mmcu*: -m avr2}\
 813 %{mmcu=at90s1200|\
 814   mmcu=attiny11|\
 815   mmcu=attiny12|\
 816   mmcu=attiny15|\
 817   mmcu=attiny28: -m avr1}\
 818 %{mmcu=attiny22|\
 819   mmcu=attiny26|\
 820   mmcu=at90s2*|\
 821   mmcu=at90s4*|\
 822   mmcu=at90s8*|\
 823   mmcu=at90c8*|\
 824   mmcu=at86rf401|\
 825   mmcu=attiny13|\
 826   mmcu=attiny2313|\
 827   mmcu=attiny24|\
 828   mmcu=attiny25|\
 829   mmcu=attiny261|\
 830   mmcu=attiny4*|\
 831   mmcu=attiny8*: -m avr2}\
 832 %{mmcu=atmega103|\
 833   mmcu=at43*|\
 834   mmcu=at76*|\
 835   mmcu=at90usb82|\
 836   mmcu=at90usb162: -m avr3}\
 837 %{mmcu=atmega8*|\
 838   mmcu=atmega48*|\
 839   mmcu=at90pwm1|\
 840   mmcu=at90pwm2|\
 841   mmcu=at90pwm2b|\
 842   mmcu=at90pwm3|\
 843   mmcu=at90pwm3b: -m avr4}\
 844 %{mmcu=atmega16*|\
 845   mmcu=atmega32*|\
 846   mmcu=atmega406|\
 847   mmcu=atmega64*|\
 848   mmcu=atmega128*|\
 849   mmcu=at90can*|\
 850   mmcu=at90pwm216|\
 851   mmcu=at90pwm316|\
 852   mmcu=at90usb64*|\
 853   mmcu=at90usb128*|\
 854   mmcu=at94k: -m avr5}\
 855 %{mmcu=atmega256*:-m avr6}\
 856 %{mmcu=atmega324*|\
 857   mmcu=atmega325*|\
 858   mmcu=atmega328p|\
 859   mmcu=atmega329*|\
 860   mmcu=atmega406|\
 861   mmcu=atmega48*|\
 862   mmcu=atmega88*|\
 863   mmcu=atmega64|\
 864   mmcu=atmega644*|\
 865   mmcu=atmega645*|\
 866   mmcu=atmega649*|\
 867   mmcu=atmega128|\
 868   mmcu=atmega1284p|\
 869   mmcu=atmega162|\
 870   mmcu=atmega164*|\
 871   mmcu=atmega165*|\
 872   mmcu=atmega168*|\
 873   mmcu=atmega169*|\
 874   mmcu=atmega8hva|\
 875   mmcu=atmega16hva|\
 876   mmcu=atmega32hvb|\
 877   mmcu=attiny48|\
 878   mmcu=attiny88|\
 879   mmcu=at90can*|\
 880   mmcu=at90pwm*|\
 881   mmcu=at90usb*: -Tdata 0x800100}\
 882 %{mmcu=atmega640|\
 883   mmcu=atmega1280|\
 884   mmcu=atmega1281|\
 885   mmcu=atmega256*: -Tdata 0x800200} "
 886
 887 #define LIB_SPEC \
 888   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
 889
 890 #define LIBSTDCXX "-lgcc"
 891 /* No libstdc++ for now.  Empty string doesn't work.  */
 892
 893 #define LIBGCC_SPEC \
 894   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
 895
 896 #define STARTFILE_SPEC "%(crt_binutils)"
 897
 898 #define ENDFILE_SPEC ""
 899
 900 #define CRT_BINUTILS_SPECS "\
 901 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
 902 %{mmcu=attiny11:crttn11.o%s} \
 903 %{mmcu=attiny12:crttn12.o%s} \
 904 %{mmcu=attiny15:crttn15.o%s} \
 905 %{mmcu=attiny28:crttn28.o%s} \
 906 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
 907 %{mmcu=at90s2313:crts2313.o%s} \
 908 %{mmcu=at90s2323:crts2323.o%s} \
 909 %{mmcu=at90s2333:crts2333.o%s} \
 910 %{mmcu=at90s2343:crts2343.o%s} \
 911 %{mmcu=attiny22:crttn22.o%s} \
 912 %{mmcu=attiny26:crttn26.o%s} \
 913 %{mmcu=at90s4433:crts4433.o%s} \
 914 %{mmcu=at90s4414:crts4414.o%s} \
 915 %{mmcu=at90s4434:crts4434.o%s} \
 916 %{mmcu=at90c8534:crtc8534.o%s} \
 917 %{mmcu=at90s8535:crts8535.o%s} \
 918 %{mmcu=at86rf401:crt86401.o%s} \
 919 %{mmcu=attiny13:crttn13.o%s} \
 920 %{mmcu=attiny2313|mmcu=avr25:crttn2313.o%s} \
 921 %{mmcu=attiny24:crttn24.o%s} \
 922 %{mmcu=attiny44:crttn44.o%s} \
 923 %{mmcu=attiny84:crttn84.o%s} \
 924 %{mmcu=attiny25:crttn25.o%s} \
 925 %{mmcu=attiny45:crttn45.o%s} \
 926 %{mmcu=attiny85:crttn85.o%s} \
 927 %{mmcu=attiny261:crttn261.o%s} \
 928 %{mmcu=attiny461:crttn461.o%s} \
 929 %{mmcu=attiny861:crttn861.o%s} \
 930 %{mmcu=attiny43u:crttn43u.o%s} \
 931 %{mmcu=attiny48:crttn48.o%s} \
 932 %{mmcu=attiny88:crttn88.o%s} \
 933 %{mmcu=at43usb320|mmcu=avr3:crt43320.o%s} \
 934 %{mmcu=at43usb355:crt43355.o%s} \
 935 %{mmcu=at76c711:crt76711.o%s} \
 936 %{mmcu=atmega103|mmcu=avr31:crtm103.o%s} \
 937 %{mmcu=at90usb162|mmcu=avr35:crtusb162.o%s} \
 938 %{mmcu=at90usb82:crtusb82.o%s} \
 939 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
 940 %{mmcu=atmega48:crtm48.o%s} \
 941 %{mmcu=atmega48p:crtm48p.o%s} \
 942 %{mmcu=atmega88:crtm88.o%s} \
 943 %{mmcu=atmega88p:crtm88p.o%s} \
 944 %{mmcu=atmega8515:crtm8515.o%s} \
 945 %{mmcu=atmega8535:crtm8535.o%s} \
 946 %{mmcu=at90pwm1:crt90pwm1.o%s} \
 947 %{mmcu=at90pwm2:crt90pwm2.o%s} \
 948 %{mmcu=at90pwm2b:crt90pwm2b.o%s} \
 949 %{mmcu=at90pwm3:crt90pwm3.o%s} \
 950 %{mmcu=at90pwm3b:crt90pwm3b.o%s} \
 951 %{mmcu=atmega16:crtm16.o%s} \
 952 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
 953 %{mmcu=atmega162:crtm162.o%s} \
 954 %{mmcu=atmega163:crtm163.o%s} \
 955 %{mmcu=atmega164p:crtm164p.o%s} \
 956 %{mmcu=atmega165:crtm165.o%s} \
 957 %{mmcu=atmega165p:crtm165p.o%s} \
 958 %{mmcu=atmega168:crtm168.o%s} \
 959 %{mmcu=atmega168p:crtm168p.o%s} \
 960 %{mmcu=atmega169:crtm169.o%s} \
 961 %{mmcu=atmega169p:crtm169p.o%s} \
 962 %{mmcu=atmega32:crtm32.o%s} \
 963 %{mmcu=atmega323:crtm323.o%s} \
 964 %{mmcu=atmega324p:crtm324p.o%s} \
 965 %{mmcu=atmega325:crtm325.o%s} \
 966 %{mmcu=atmega325p:crtm325p.o%s} \
 967 %{mmcu=atmega3250:crtm3250.o%s} \
 968 %{mmcu=atmega3250p:crtm3250p.o%s} \
 969 %{mmcu=atmega328p:crtm328p.o%s} \
 970 %{mmcu=atmega329:crtm329.o%s} \
 971 %{mmcu=atmega329p:crtm329p.o%s} \
 972 %{mmcu=atmega3290:crtm3290.o%s} \
 973 %{mmcu=atmega3290p:crtm3290p.o%s} \
 974 %{mmcu=atmega32hvb:crtm32hvb.o%s} \
 975 %{mmcu=atmega406:crtm406.o%s} \
 976 %{mmcu=atmega64:crtm64.o%s} \
 977 %{mmcu=atmega640:crtm640.o%s} \
 978 %{mmcu=atmega644:crtm644.o%s} \
 979 %{mmcu=atmega644p:crtm644p.o%s} \
 980 %{mmcu=atmega645:crtm645.o%s} \
 981 %{mmcu=atmega6450:crtm6450.o%s} \
 982 %{mmcu=atmega649:crtm649.o%s} \
 983 %{mmcu=atmega6490:crtm6490.o%s} \
 984 %{mmcu=atmega8hva:crtm8hva.o%s} \
 985 %{mmcu=atmega16hva:crtm16hva.o%s} \
 986 %{mmcu=at90can32:crtcan32.o%s} \
 987 %{mmcu=at90can64:crtcan64.o%s} \
 988 %{mmcu=at90pwm216:crt90pwm216.o%s} \
 989 %{mmcu=at90pwm316:crt90pwm316.o%s} \
 990 %{mmcu=at90usb646:crtusb646.o%s} \
 991 %{mmcu=at90usb647:crtusb647.o%s} \
 992 %{mmcu=at94k:crtat94k.o%s} \
 993 %{mmcu=atmega128|mmcu=avr51:crtm128.o%s} \
 994 %{mmcu=atmega1280:crtm1280.o%s} \
 995 %{mmcu=atmega1281:crtm1281.o%s} \
 996 %{mmcu=atmega1284p:crtm1284p.o%s} \
 997 %{mmcu=atmega2560:crtm2560.o%s} \
 998 %{mmcu=atmega2561:crtm2561.o%s} \
 999 %{mmcu=at90can128:crtcan128.o%s} \
1000 %{mmcu=at90usb1286:crtusb1286.o%s} \
1001 %{mmcu=at90usb1287:crtusb1287.o%s}"
1002
1003 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
1004
1005 /* This is the default without any -mmcu=* option (AT90S*).  */
1006 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
1007
1008 /* This is undefined macro for collect2 disabling */
1009 #define LINKER_NAME "ld"
1010
1011 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
1012   TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
1013
1014 /* Note that the other files fail to use these
1015    in some of the places where they should.  */
1016
1017 #if defined(__STDC__) || defined(ALMOST_STDC)
1018 #define AS2(a,b,c) #a " " #b "," #c
1019 #define AS2C(b,c) " " #b "," #c
1020 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
1021 #define AS1(a,b) #a " " #b
1022 #else
1023 #define AS1(a,b) "a     b"
1024 #define AS2(a,b,c) "a   b,c"
1025 #define AS2C(b,c) " b,c"
1026 #define AS3(a,b,c,d) "a b,c,d"
1027 #endif
1028 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
1029 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
1030 #define CR_TAB "\n\t"
1031
1032 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
1033
1034 #define DWARF2_DEBUGGING_INFO 1
1035
1036 #define DWARF2_ADDR_SIZE 4
1037
1038 #define OBJECT_FORMAT_ELF
1039
1040 /* A C structure for machine-specific, per-function data.
1041    This is added to the cfun structure.  */
1042 struct machine_function GTY(())
1043 {
1044   /* 'true' - if the current function is a leaf function.  */
1045   int is_leaf;
1046
1047   /* 'true' - if current function is a naked function.  */
1048   int is_naked;
1049
1050   /* 'true' - if current function is an interrupt function
1051      as specified by the "interrupt" attribute.  */
1052   int is_interrupt;
1053
1054   /* 'true' - if current function is a signal function
1055      as specified by the "signal" attribute.  */
1056   int is_signal;
1057
1058   /* 'true' - if current function is a 'task' function
1059      as specified by the "OS_task" attribute.  */
1060   int is_OS_task;
1061
1062   /* 'true' - if current function is a 'main' function
1063      as specified by the "OS_main" attribute.  */
1064   int is_OS_main;
1065 };