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 /* Don't use Push rounding. expr.c: emit_single_push_insn is broken
 377    for POST_DEC targets (PR27386).  */
 378 /*#define PUSH_ROUNDING(NPUSHED) (NPUSHED)*/
 379
 380 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
 381
 382 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) (function_arg (&(CUM), MODE, TYPE, NAMED))
 383
 384 typedef struct avr_args {
 385   int nregs;                    /* # registers available for passing */
 386   int regno;                    /* next available register number */
 387 } CUMULATIVE_ARGS;
 388
 389 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
 390   init_cumulative_args (&(CUM), FNTYPE, LIBNAME, FNDECL)
 391
 392 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)    \
 393   (function_arg_advance (&CUM, MODE, TYPE, NAMED))
 394
 395 #define FUNCTION_ARG_REGNO_P(r) function_arg_regno_p(r)
 396
 397 extern int avr_reg_order[];
 398
 399 #define RET_REGISTER avr_ret_register ()
 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
 452 /* LEGITIMIZE_RELOAD_ADDRESS will allow register R26/27 to be used, where it
 453    is no worse than normal base pointers R28/29 and R30/31. For example:
 454    If base offset is greater than 63 bytes or for R++ or --R addressing.  */
 455
 456 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN)    \
 457 do {                                                                        \
 458   if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC))     \
 459     {                                                                       \
 460       push_reload (XEXP (X,0), XEXP (X,0), &XEXP (X,0), &XEXP (X,0),        \
 461                    POINTER_REGS, GET_MODE (X),GET_MODE (X) , 0, 0,          \
 462                    OPNUM, RELOAD_OTHER);                                    \
 463       goto WIN;                                                             \
 464     }                                                                       \
 465   if (GET_CODE (X) == PLUS                                                  \
 466       && REG_P (XEXP (X, 0))                                                \
 467       && reg_equiv_constant[REGNO (XEXP (X, 0))] == 0                       \
 468       && GET_CODE (XEXP (X, 1)) == CONST_INT                                \
 469       && INTVAL (XEXP (X, 1)) >= 1)                                         \
 470     {                                                                       \
 471       int fit = INTVAL (XEXP (X, 1)) <= (64 - GET_MODE_SIZE (MODE));        \
 472       if (fit)                                                              \
 473         {                                                                   \
 474           if (reg_equiv_address[REGNO (XEXP (X, 0))] != 0)                  \
 475             {                                                               \
 476               int regno = REGNO (XEXP (X, 0));                              \
 477               rtx mem = make_memloc (X, regno);                             \
 478               push_reload (XEXP (mem,0), NULL, &XEXP (mem,0), NULL,         \
 479                            POINTER_REGS, Pmode, VOIDmode, 0, 0,             \
 480                            1, ADDR_TYPE (TYPE));                            \
 481               push_reload (mem, NULL_RTX, &XEXP (X, 0), NULL,               \
 482                            BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
 483                            OPNUM, TYPE);                                    \
 484               goto WIN;                                                     \
 485             }                                                               \
 486           push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL,           \
 487                        BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,     \
 488                        OPNUM, TYPE);                                        \
 489           goto WIN;                                                         \
 490         }                                                                   \
 491       else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
 492         {                                                                   \
 493           push_reload (X, NULL_RTX, &X, NULL,                               \
 494                        POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,          \
 495                        OPNUM, TYPE);                                        \
 496           goto WIN;                                                         \
 497         }                                                                   \
 498     }                                                                       \
 499 } while(0)
 500
 501 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
 502
 503 #define LEGITIMATE_CONSTANT_P(X) 1
 504
 505 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
 506                                             : (TO) == STACK_REG ? 12 \
 507                                             : 2)
 508
 509 #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 :   \
 510                                          (MODE)==HImode ? 4 :   \
 511                                          (MODE)==SImode ? 8 :   \
 512                                          (MODE)==SFmode ? 8 : 16)
 513
 514 #define BRANCH_COST 0
 515
 516 #define SLOW_BYTE_ACCESS 0
 517
 518 #define NO_FUNCTION_CSE
 519
 520 #define TEXT_SECTION_ASM_OP "\t.text"
 521
 522 #define DATA_SECTION_ASM_OP "\t.data"
 523
 524 #define BSS_SECTION_ASM_OP "\t.section .bss"
 525
 526 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
 527    There are no shared libraries on this target, and these sections are
 528    placed in the read-only program memory, so they are not writable.  */
 529
 530 #undef CTORS_SECTION_ASM_OP
 531 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"a\",@progbits"
 532
 533 #undef DTORS_SECTION_ASM_OP
 534 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits"
 535
 536 #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor
 537
 538 #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
 539
 540 #define SUPPORTS_INIT_PRIORITY 0
 541
 542 #define JUMP_TABLES_IN_TEXT_SECTION 0
 543
 544 #define ASM_COMMENT_START " ; "
 545
 546 #define ASM_APP_ON "/* #APP */\n"
 547
 548 #define ASM_APP_OFF "/* #NOAPP */\n"
 549
 550 /* Switch into a generic section.  */
 551 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
 552 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
 553
 554 #define ASM_OUTPUT_ASCII(FILE, P, SIZE)  gas_output_ascii (FILE,P,SIZE)
 555
 556 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C, STR) ((C) == '\n' || ((C) == '$'))
 557
 558 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)                     \
 559 do {                                                                       \
 560      fputs ("\t.comm ", (STREAM));                                         \
 561      assemble_name ((STREAM), (NAME));                                     \
 562      fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE));                \
 563 } while (0)
 564
 565 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED)                 \
 566   asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
 567
 568 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED)                   \
 569 do {                                                                    \
 570      fputs ("\t.lcomm ", (STREAM));                                     \
 571      assemble_name ((STREAM), (NAME));                                  \
 572      fprintf ((STREAM), ",%d\n", (int)(SIZE));                          \
 573 } while (0)
 574
 575 #undef TYPE_ASM_OP
 576 #undef SIZE_ASM_OP
 577 #undef WEAK_ASM_OP
 578 #define TYPE_ASM_OP     "\t.type\t"
 579 #define SIZE_ASM_OP     "\t.size\t"
 580 #define WEAK_ASM_OP     "\t.weak\t"
 581 /* Define the strings used for the special svr4 .type and .size directives.
 582    These strings generally do not vary from one system running svr4 to
 583    another, but if a given system (e.g. m88k running svr) needs to use
 584    different pseudo-op names for these, they may be overridden in the
 585    file which includes this one.  */
 586
 587
 588 #undef TYPE_OPERAND_FMT
 589 #define TYPE_OPERAND_FMT        "@%s"
 590 /* The following macro defines the format used to output the second
 591    operand of the .type assembler directive.  Different svr4 assemblers
 592    expect various different forms for this operand.  The one given here
 593    is just a default.  You may need to override it in your machine-
 594    specific tm.h file (depending upon the particulars of your assembler).  */
 595
 596 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 597 do {                                                            \
 598      ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");        \
 599      ASM_OUTPUT_LABEL (FILE, NAME);                             \
 600 } while (0)
 601
 602 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                    \
 603   do {                                                                  \
 604     if (!flag_inhibit_size_directive)                                   \
 605       ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                           \
 606   } while (0)
 607
 608 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 609 do {                                                                    \
 610   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");                     \
 611   size_directive_output = 0;                                            \
 612   if (!flag_inhibit_size_directive && DECL_SIZE (DECL))                 \
 613     {                                                                   \
 614       size_directive_output = 1;                                        \
 615       ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME,                            \
 616                                  int_size_in_bytes (TREE_TYPE (DECL))); \
 617     }                                                                   \
 618   ASM_OUTPUT_LABEL(FILE, NAME);                                         \
 619 } while (0)
 620
 621 #undef ASM_FINISH_DECLARE_OBJECT
 622 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 623 do {                                                                     \
 624      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 625      HOST_WIDE_INT size;                                                 \
 626      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 627          && ! AT_END && TOP_LEVEL                                        \
 628          && DECL_INITIAL (DECL) == error_mark_node                       \
 629          && !size_directive_output)                                      \
 630        {                                                                 \
 631          size_directive_output = 1;                                      \
 632          size = int_size_in_bytes (TREE_TYPE (DECL));                    \
 633          ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size);                   \
 634        }                                                                 \
 635    } while (0)
 636
 637
 638 #define ESCAPES \
 639 "\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\
 640 \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\
 641 \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\
 642 \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\
 643 \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\
 644 \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\
 645 \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\
 646 \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"
 647 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
 648    ASM_OUTPUT_LIMITED_STRING macros.  Each byte in the table
 649    corresponds to a particular byte value [0..255].  For any
 650    given byte value, if the value in the corresponding table
 651    position is zero, the given character can be output directly.
 652    If the table value is 1, the byte must be output as a \ooo
 653    octal escape.  If the tables value is anything else, then the
 654    byte value should be output as a \ followed by the value
 655    in the table.  Note that we can use standard UN*X escape
 656    sequences for many control characters, but we don't use
 657    \a to represent BEL because some svr4 assemblers (e.g. on
 658    the i386) don't know about that.  Also, we don't use \v
 659    since some versions of gas, such as 2.2 did not accept it.  */
 660
 661 #define STRING_LIMIT    ((unsigned) 64)
 662 #define STRING_ASM_OP   "\t.string\t"
 663 /* Some svr4 assemblers have a limit on the number of characters which
 664    can appear in the operand of a .string directive.  If your assembler
 665    has such a limitation, you should define STRING_LIMIT to reflect that
 666    limit.  Note that at least some svr4 assemblers have a limit on the
 667    actual number of bytes in the double-quoted string, and that they
 668    count each character in an escape sequence as one byte.  Thus, an
 669    escape sequence like \377 would count as four bytes.
 670
 671    If your target assembler doesn't support the .string directive, you
 672    should define this to zero.  */
 673
 674 /* Globalizing directive for a label.  */
 675 #define GLOBAL_ASM_OP ".global\t"
 676
 677 #define SET_ASM_OP      "\t.set\t"
 678
 679 #define ASM_WEAKEN_LABEL(FILE, NAME)    \
 680   do                                    \
 681     {                                   \
 682       fputs ("\t.weak\t", (FILE));      \
 683       assemble_name ((FILE), (NAME));   \
 684       fputc ('\n', (FILE));             \
 685     }                                   \
 686   while (0)
 687
 688 #define SUPPORTS_WEAK 1
 689
 690 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)        \
 691 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
 692
 693 #define HAS_INIT_SECTION 1
 694
 695 #define REGISTER_NAMES {                                \
 696   "r0","r1","r2","r3","r4","r5","r6","r7",              \
 697     "r8","r9","r10","r11","r12","r13","r14","r15",      \
 698     "r16","r17","r18","r19","r20","r21","r22","r23",    \
 699     "r24","r25","r26","r27","r28","r29","r30","r31",    \
 700     "__SP_L__","__SP_H__","argL","argH"}
 701
 702 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
 703
 704 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
 705
 706 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~' || (CODE) == '!')
 707
 708 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
 709
 710 #define USER_LABEL_PREFIX ""
 711
 712 #define ASSEMBLER_DIALECT AVR_HAVE_MOVW
 713
 714 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO)      \
 715 {                                               \
 716   gcc_assert (REGNO < 32);                      \
 717   fprintf (STREAM, "\tpush\tr%d", REGNO);       \
 718 }
 719
 720 #define ASM_OUTPUT_REG_POP(STREAM, REGNO)       \
 721 {                                               \
 722   gcc_assert (REGNO < 32);                      \
 723   fprintf (STREAM, "\tpop\tr%d", REGNO);        \
 724 }
 725
 726 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)          \
 727   avr_output_addr_vec_elt(STREAM, VALUE)
 728
 729 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
 730   (switch_to_section (progmem_section), \
 731    (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
 732
 733 #define ASM_OUTPUT_SKIP(STREAM, N)              \
 734 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
 735
 736 #define ASM_OUTPUT_ALIGN(STREAM, POWER)                 \
 737   do {                                                  \
 738       if ((POWER) > 1)                                  \
 739           fprintf (STREAM, "\t.p2align\t%d\n", POWER);  \
 740   } while (0)
 741
 742 #define CASE_VECTOR_MODE HImode
 743
 744 extern int avr_case_values_threshold;
 745
 746 #define CASE_VALUES_THRESHOLD avr_case_values_threshold
 747
 748 #undef WORD_REGISTER_OPERATIONS
 749
 750 #define MOVE_MAX 4
 751
 752 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
 753
 754 #define Pmode HImode
 755
 756 #define FUNCTION_MODE HImode
 757
 758 #define DOLLARS_IN_IDENTIFIERS 0
 759
 760 #define NO_DOLLAR_IN_LABEL 1
 761
 762 #define TRAMPOLINE_TEMPLATE(FILE) \
 763   internal_error ("trampolines not supported")
 764
 765 #define TRAMPOLINE_SIZE 4
 766
 767 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT)                             \
 768 {                                                                             \
 769   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT);    \
 770   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
 771 }
 772 /* Store in cc_status the expressions
 773    that the condition codes will describe
 774    after execution of an instruction whose pattern is EXP.
 775    Do not alter them if the instruction would not alter the cc's.  */
 776
 777 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
 778
 779 /* The add insns don't set overflow in a usable way.  */
 780 #define CC_OVERFLOW_UNUSABLE 01000
 781 /* The mov,and,or,xor insns don't set carry.  That's ok though as the
 782    Z bit is all we need when doing unsigned comparisons on the result of
 783    these insns (since they're always with 0).  However, conditions.h has
 784    CC_NO_OVERFLOW defined for this purpose.  Rename it to something more
 785    understandable.  */
 786 #define CC_NO_CARRY CC_NO_OVERFLOW
 787
 788
 789 /* Output assembler code to FILE to increment profiler label # LABELNO
 790    for profiling a function entry.  */
 791
 792 #define FUNCTION_PROFILER(FILE, LABELNO)  \
 793   fprintf (FILE, "/* profiler %d */", (LABELNO))
 794
 795 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
 796                                           adjust_insn_length (INSN, LENGTH))
 797
 798 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
 799
 800 #define CC1_SPEC "%{profile:-p}"
 801
 802 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
 803     %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
 804     %{!fexceptions:-fno-exceptions}"
 805 /* A C string constant that tells the GCC driver program options to
 806    pass to `cc1plus'.  */
 807
 808 #define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;mmcu=avr35:-mmcu=avr3;mmcu=avr31:-mmcu=avr3;mmcu=avr51:-mmcu=avr5;\
 809 mmcu=*:-mmcu=%*}"
 810
 811 #define LINK_SPEC "\
 812 %{mrelax:--relax\
 813          %{mpmem-wrap-around:%{mmcu=at90usb8*:--pmem-wrap-around=8k}\
 814                              %{mmcu=atmega16*:--pmem-wrap-around=16k}\
 815                              %{mmcu=atmega32*|\
 816                                mmcu=at90can32*:--pmem-wrap-around=32k}\
 817                              %{mmcu=atmega64*|\
 818                                mmcu=at90can64*|\
 819                                mmcu=at90usb64*:--pmem-wrap-around=64k}}}\
 820 %{!mmcu*: -m avr2}\
 821 %{mmcu=at90s1200|\
 822   mmcu=attiny11|\
 823   mmcu=attiny12|\
 824   mmcu=attiny15|\
 825   mmcu=attiny28: -m avr1}\
 826 %{mmcu=attiny22|\
 827   mmcu=attiny26|\
 828   mmcu=at90s2*|\
 829   mmcu=at90s4*|\
 830   mmcu=at90s8*|\
 831   mmcu=at90c8*|\
 832   mmcu=at86rf401|\
 833   mmcu=attiny13*|\
 834   mmcu=attiny2313|\
 835   mmcu=attiny24|\
 836   mmcu=attiny25|\
 837   mmcu=attiny261|\
 838   mmcu=attiny4*|\
 839   mmcu=attiny8*: -m avr2}\
 840 %{mmcu=atmega103|\
 841   mmcu=at43*|\
 842   mmcu=at76*|\
 843   mmcu=at90usb82|\
 844   mmcu=at90usb162|\
 845   mmcu=attiny167: -m avr3}\
 846 %{mmcu=atmega8*|\
 847   mmcu=atmega48*|\
 848   mmcu=at90pwm1|\
 849   mmcu=at90pwm2|\
 850   mmcu=at90pwm2b|\
 851   mmcu=at90pwm3|\
 852   mmcu=at90pwm3b: -m avr4}\
 853 %{mmcu=atmega16*|\
 854   mmcu=atmega32*|\
 855   mmcu=atmega406|\
 856   mmcu=atmega64*|\
 857   mmcu=atmega128*|\
 858   mmcu=at90can*|\
 859   mmcu=at90pwm216|\
 860   mmcu=at90pwm316|\
 861   mmcu=at90usb64*|\
 862   mmcu=at90usb128*|\
 863   mmcu=at94k: -m avr5}\
 864 %{mmcu=atmega256*:-m avr6}\
 865 %{mmcu=atmega324*|\
 866   mmcu=atmega325*|\
 867   mmcu=atmega328p|\
 868   mmcu=atmega329*|\
 869   mmcu=atmega406|\
 870   mmcu=atmega48*|\
 871   mmcu=atmega88*|\
 872   mmcu=atmega64|\
 873   mmcu=atmega644*|\
 874   mmcu=atmega645*|\
 875   mmcu=atmega649*|\
 876   mmcu=atmega128|\
 877   mmcu=atmega1284p|\
 878   mmcu=atmega162|\
 879   mmcu=atmega164*|\
 880   mmcu=atmega165*|\
 881   mmcu=atmega168*|\
 882   mmcu=atmega169*|\
 883   mmcu=atmega8hva|\
 884   mmcu=atmega16hva|\
 885   mmcu=attiny48|\
 886   mmcu=attiny88|\
 887   mmcu=attiny167|\
 888   mmcu=at90can*|\
 889   mmcu=at90pwm*|\
 890   mmcu=atmega32c1|\
 891   mmcu=atmega32m1|\
 892   mmcu=atmega32u4|\
 893   mmcu=at90usb*: -Tdata 0x800100}\
 894 %{mmcu=atmega640|\
 895   mmcu=atmega1280|\
 896   mmcu=atmega1281|\
 897   mmcu=atmega256*: -Tdata 0x800200} "
 898
 899 #define LIB_SPEC \
 900   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
 901
 902 #define LIBSTDCXX "-lgcc"
 903 /* No libstdc++ for now.  Empty string doesn't work.  */
 904
 905 #define LIBGCC_SPEC \
 906   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
 907
 908 #define STARTFILE_SPEC "%(crt_binutils)"
 909
 910 #define ENDFILE_SPEC ""
 911
 912 #define CRT_BINUTILS_SPECS "\
 913 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
 914 %{mmcu=attiny11:crttn11.o%s} \
 915 %{mmcu=attiny12:crttn12.o%s} \
 916 %{mmcu=attiny15:crttn15.o%s} \
 917 %{mmcu=attiny28:crttn28.o%s} \
 918 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
 919 %{mmcu=at90s2313:crts2313.o%s} \
 920 %{mmcu=at90s2323:crts2323.o%s} \
 921 %{mmcu=at90s2333:crts2333.o%s} \
 922 %{mmcu=at90s2343:crts2343.o%s} \
 923 %{mmcu=attiny22:crttn22.o%s} \
 924 %{mmcu=attiny26:crttn26.o%s} \
 925 %{mmcu=at90s4433:crts4433.o%s} \
 926 %{mmcu=at90s4414:crts4414.o%s} \
 927 %{mmcu=at90s4434:crts4434.o%s} \
 928 %{mmcu=at90c8534:crtc8534.o%s} \
 929 %{mmcu=at90s8535:crts8535.o%s} \
 930 %{mmcu=at86rf401:crt86401.o%s} \
 931 %{mmcu=attiny13:crttn13.o%s} \
 932 %{mmcu=attiny13a:crttn13a.o%s} \
 933 %{mmcu=attiny2313|mmcu=avr25:crttn2313.o%s} \
 934 %{mmcu=attiny24:crttn24.o%s} \
 935 %{mmcu=attiny44:crttn44.o%s} \
 936 %{mmcu=attiny84:crttn84.o%s} \
 937 %{mmcu=attiny25:crttn25.o%s} \
 938 %{mmcu=attiny45:crttn45.o%s} \
 939 %{mmcu=attiny85:crttn85.o%s} \
 940 %{mmcu=attiny261:crttn261.o%s} \
 941 %{mmcu=attiny461:crttn461.o%s} \
 942 %{mmcu=attiny861:crttn861.o%s} \
 943 %{mmcu=attiny43u:crttn43u.o%s} \
 944 %{mmcu=attiny48:crttn48.o%s} \
 945 %{mmcu=attiny88:crttn88.o%s} \
 946 %{mmcu=attiny167:crttn167.o%s} \
 947 %{mmcu=at43usb355|mmcu=avr3:crt43355.o%s} \
 948 %{mmcu=at76c711:crt76711.o%s} \
 949 %{mmcu=atmega103|mmcu=avr31:crtm103.o%s} \
 950 %{mmcu=at43usb320:crt43320.o%s} \
 951 %{mmcu=at90usb162|mmcu=avr35:crtusb162.o%s} \
 952 %{mmcu=at90usb82:crtusb82.o%s} \
 953 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
 954 %{mmcu=atmega48:crtm48.o%s} \
 955 %{mmcu=atmega48p:crtm48p.o%s} \
 956 %{mmcu=atmega88:crtm88.o%s} \
 957 %{mmcu=atmega88p:crtm88p.o%s} \
 958 %{mmcu=atmega8515:crtm8515.o%s} \
 959 %{mmcu=atmega8535:crtm8535.o%s} \
 960 %{mmcu=at90pwm1:crt90pwm1.o%s} \
 961 %{mmcu=at90pwm2:crt90pwm2.o%s} \
 962 %{mmcu=at90pwm2b:crt90pwm2b.o%s} \
 963 %{mmcu=at90pwm3:crt90pwm3.o%s} \
 964 %{mmcu=at90pwm3b:crt90pwm3b.o%s} \
 965 %{mmcu=atmega16:crtm16.o%s} \
 966 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
 967 %{mmcu=atmega162:crtm162.o%s} \
 968 %{mmcu=atmega163:crtm163.o%s} \
 969 %{mmcu=atmega164p:crtm164p.o%s} \
 970 %{mmcu=atmega165:crtm165.o%s} \
 971 %{mmcu=atmega165p:crtm165p.o%s} \
 972 %{mmcu=atmega168:crtm168.o%s} \
 973 %{mmcu=atmega168p:crtm168p.o%s} \
 974 %{mmcu=atmega169:crtm169.o%s} \
 975 %{mmcu=atmega169p:crtm169p.o%s} \
 976 %{mmcu=atmega32:crtm32.o%s} \
 977 %{mmcu=atmega323:crtm323.o%s} \
 978 %{mmcu=atmega324p:crtm324p.o%s} \
 979 %{mmcu=atmega325:crtm325.o%s} \
 980 %{mmcu=atmega325p:crtm325p.o%s} \
 981 %{mmcu=atmega3250:crtm3250.o%s} \
 982 %{mmcu=atmega3250p:crtm3250p.o%s} \
 983 %{mmcu=atmega328p:crtm328p.o%s} \
 984 %{mmcu=atmega329:crtm329.o%s} \
 985 %{mmcu=atmega329p:crtm329p.o%s} \
 986 %{mmcu=atmega3290:crtm3290.o%s} \
 987 %{mmcu=atmega3290p:crtm3290p.o%s} \
 988 %{mmcu=atmega406:crtm406.o%s} \
 989 %{mmcu=atmega64:crtm64.o%s} \
 990 %{mmcu=atmega640:crtm640.o%s} \
 991 %{mmcu=atmega644:crtm644.o%s} \
 992 %{mmcu=atmega644p:crtm644p.o%s} \
 993 %{mmcu=atmega645:crtm645.o%s} \
 994 %{mmcu=atmega6450:crtm6450.o%s} \
 995 %{mmcu=atmega649:crtm649.o%s} \
 996 %{mmcu=atmega6490:crtm6490.o%s} \
 997 %{mmcu=atmega8hva:crtm8hva.o%s} \
 998 %{mmcu=atmega16hva:crtm16hva.o%s} \
 999 %{mmcu=at90can32:crtcan32.o%s} \
1000 %{mmcu=at90can64:crtcan64.o%s} \
1001 %{mmcu=at90pwm216:crt90pwm216.o%s} \
1002 %{mmcu=at90pwm316:crt90pwm316.o%s} \
1003 %{mmcu=atmega32c1:crtm32c1.o%s} \
1004 %{mmcu=atmega32m1:crtm32m1.o%s} \
1005 %{mmcu=atmega32u4:crtm32u4.o%s} \
1006 %{mmcu=at90usb646:crtusb646.o%s} \
1007 %{mmcu=at90usb647:crtusb647.o%s} \
1008 %{mmcu=at94k:crtat94k.o%s} \
1009 %{mmcu=atmega128|mmcu=avr51:crtm128.o%s} \
1010 %{mmcu=atmega1280:crtm1280.o%s} \
1011 %{mmcu=atmega1281:crtm1281.o%s} \
1012 %{mmcu=atmega1284p:crtm1284p.o%s} \
1013 %{mmcu=atmega2560:crtm2560.o%s} \
1014 %{mmcu=atmega2561:crtm2561.o%s} \
1015 %{mmcu=at90can128:crtcan128.o%s} \
1016 %{mmcu=at90usb1286:crtusb1286.o%s} \
1017 %{mmcu=at90usb1287:crtusb1287.o%s}"
1018
1019 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
1020
1021 /* This is the default without any -mmcu=* option (AT90S*).  */
1022 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
1023
1024 /* This is undefined macro for collect2 disabling */
1025 #define LINKER_NAME "ld"
1026
1027 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
1028   TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
1029
1030 /* Note that the other files fail to use these
1031    in some of the places where they should.  */
1032
1033 #if defined(__STDC__) || defined(ALMOST_STDC)
1034 #define AS2(a,b,c) #a " " #b "," #c
1035 #define AS2C(b,c) " " #b "," #c
1036 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
1037 #define AS1(a,b) #a " " #b
1038 #else
1039 #define AS1(a,b) "a     b"
1040 #define AS2(a,b,c) "a   b,c"
1041 #define AS2C(b,c) " b,c"
1042 #define AS3(a,b,c,d) "a b,c,d"
1043 #endif
1044 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
1045 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
1046 #define CR_TAB "\n\t"
1047
1048 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
1049
1050 #define DWARF2_DEBUGGING_INFO 1
1051
1052 #define DWARF2_ADDR_SIZE 4
1053
1054 #define OBJECT_FORMAT_ELF
1055
1056 #define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \
1057   avr_hard_regno_rename_ok (OLD_REG, NEW_REG)
1058
1059 /* A C structure for machine-specific, per-function data.
1060    This is added to the cfun structure.  */
1061 struct machine_function GTY(())
1062 {
1063   /* 'true' - if the current function is a leaf function.  */
1064   int is_leaf;
1065
1066   /* 'true' - if current function is a naked function.  */
1067   int is_naked;
1068
1069   /* 'true' - if current function is an interrupt function
1070      as specified by the "interrupt" attribute.  */
1071   int is_interrupt;
1072
1073   /* 'true' - if current function is a signal function
1074      as specified by the "signal" attribute.  */
1075   int is_signal;
1076
1077   /* 'true' - if current function is a 'task' function
1078      as specified by the "OS_task" attribute.  */
1079   int is_OS_task;
1080
1081   /* 'true' - if current function is a 'main' function
1082      as specified by the "OS_main" attribute.  */
1083   int is_OS_main;
1084 };