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, 2009 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         }                                                                   \
 487       else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
 488         {                                                                   \
 489           push_reload (X, NULL_RTX, &X, NULL,                               \
 490                        POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,          \
 491                        OPNUM, TYPE);                                        \
 492           goto WIN;                                                         \
 493         }                                                                   \
 494     }                                                                       \
 495 } while(0)
 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(speed_p, predictable_p) 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 SUPPORTS_INIT_PRIORITY 0
 535
 536 #define JUMP_TABLES_IN_TEXT_SECTION 0
 537
 538 #define ASM_COMMENT_START " ; "
 539
 540 #define ASM_APP_ON "/* #APP */\n"
 541
 542 #define ASM_APP_OFF "/* #NOAPP */\n"
 543
 544 /* Switch into a generic section.  */
 545 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
 546 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
 547
 548 #define ASM_OUTPUT_ASCII(FILE, P, SIZE)  gas_output_ascii (FILE,P,SIZE)
 549
 550 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C, STR) ((C) == '\n' || ((C) == '$'))
 551
 552 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)                     \
 553 do {                                                                       \
 554      fputs ("\t.comm ", (STREAM));                                         \
 555      assemble_name ((STREAM), (NAME));                                     \
 556      fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE));                \
 557 } while (0)
 558
 559 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED)                 \
 560   asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
 561
 562 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED)                   \
 563 do {                                                                    \
 564      fputs ("\t.lcomm ", (STREAM));                                     \
 565      assemble_name ((STREAM), (NAME));                                  \
 566      fprintf ((STREAM), ",%d\n", (int)(SIZE));                          \
 567 } while (0)
 568
 569 #undef TYPE_ASM_OP
 570 #undef SIZE_ASM_OP
 571 #undef WEAK_ASM_OP
 572 #define TYPE_ASM_OP     "\t.type\t"
 573 #define SIZE_ASM_OP     "\t.size\t"
 574 #define WEAK_ASM_OP     "\t.weak\t"
 575 /* Define the strings used for the special svr4 .type and .size directives.
 576    These strings generally do not vary from one system running svr4 to
 577    another, but if a given system (e.g. m88k running svr) needs to use
 578    different pseudo-op names for these, they may be overridden in the
 579    file which includes this one.  */
 580
 581
 582 #undef TYPE_OPERAND_FMT
 583 #define TYPE_OPERAND_FMT        "@%s"
 584 /* The following macro defines the format used to output the second
 585    operand of the .type assembler directive.  Different svr4 assemblers
 586    expect various different forms for this operand.  The one given here
 587    is just a default.  You may need to override it in your machine-
 588    specific tm.h file (depending upon the particulars of your assembler).  */
 589
 590 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 591 avr_asm_declare_function_name ((FILE), (NAME), (DECL))
 592
 593 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                    \
 594   do {                                                                  \
 595     if (!flag_inhibit_size_directive)                                   \
 596       ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                           \
 597   } while (0)
 598
 599 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 600 do {                                                                    \
 601   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");                     \
 602   size_directive_output = 0;                                            \
 603   if (!flag_inhibit_size_directive && DECL_SIZE (DECL))                 \
 604     {                                                                   \
 605       size_directive_output = 1;                                        \
 606       ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME,                            \
 607                                  int_size_in_bytes (TREE_TYPE (DECL))); \
 608     }                                                                   \
 609   ASM_OUTPUT_LABEL(FILE, NAME);                                         \
 610 } while (0)
 611
 612 #undef ASM_FINISH_DECLARE_OBJECT
 613 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 614 do {                                                                     \
 615      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 616      HOST_WIDE_INT size;                                                 \
 617      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 618          && ! AT_END && TOP_LEVEL                                        \
 619          && DECL_INITIAL (DECL) == error_mark_node                       \
 620          && !size_directive_output)                                      \
 621        {                                                                 \
 622          size_directive_output = 1;                                      \
 623          size = int_size_in_bytes (TREE_TYPE (DECL));                    \
 624          ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size);                   \
 625        }                                                                 \
 626    } while (0)
 627
 628
 629 #define ESCAPES \
 630 "\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\
 631 \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\
 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\1\
 634 \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\
 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 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
 639    ASM_OUTPUT_LIMITED_STRING macros.  Each byte in the table
 640    corresponds to a particular byte value [0..255].  For any
 641    given byte value, if the value in the corresponding table
 642    position is zero, the given character can be output directly.
 643    If the table value is 1, the byte must be output as a \ooo
 644    octal escape.  If the tables value is anything else, then the
 645    byte value should be output as a \ followed by the value
 646    in the table.  Note that we can use standard UN*X escape
 647    sequences for many control characters, but we don't use
 648    \a to represent BEL because some svr4 assemblers (e.g. on
 649    the i386) don't know about that.  Also, we don't use \v
 650    since some versions of gas, such as 2.2 did not accept it.  */
 651
 652 #define STRING_LIMIT    ((unsigned) 64)
 653 #define STRING_ASM_OP   "\t.string\t"
 654 /* Some svr4 assemblers have a limit on the number of characters which
 655    can appear in the operand of a .string directive.  If your assembler
 656    has such a limitation, you should define STRING_LIMIT to reflect that
 657    limit.  Note that at least some svr4 assemblers have a limit on the
 658    actual number of bytes in the double-quoted string, and that they
 659    count each character in an escape sequence as one byte.  Thus, an
 660    escape sequence like \377 would count as four bytes.
 661
 662    If your target assembler doesn't support the .string directive, you
 663    should define this to zero.  */
 664
 665 /* Globalizing directive for a label.  */
 666 #define GLOBAL_ASM_OP ".global\t"
 667
 668 #define SET_ASM_OP      "\t.set\t"
 669
 670 #define ASM_WEAKEN_LABEL(FILE, NAME)    \
 671   do                                    \
 672     {                                   \
 673       fputs ("\t.weak\t", (FILE));      \
 674       assemble_name ((FILE), (NAME));   \
 675       fputc ('\n', (FILE));             \
 676     }                                   \
 677   while (0)
 678
 679 #define SUPPORTS_WEAK 1
 680
 681 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)        \
 682 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
 683
 684 #define HAS_INIT_SECTION 1
 685
 686 #define REGISTER_NAMES {                                \
 687   "r0","r1","r2","r3","r4","r5","r6","r7",              \
 688     "r8","r9","r10","r11","r12","r13","r14","r15",      \
 689     "r16","r17","r18","r19","r20","r21","r22","r23",    \
 690     "r24","r25","r26","r27","r28","r29","r30","r31",    \
 691     "__SP_L__","__SP_H__","argL","argH"}
 692
 693 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
 694
 695 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
 696
 697 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~' || (CODE) == '!')
 698
 699 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
 700
 701 #define USER_LABEL_PREFIX ""
 702
 703 #define ASSEMBLER_DIALECT AVR_HAVE_MOVW
 704
 705 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO)      \
 706 {                                               \
 707   gcc_assert (REGNO < 32);                      \
 708   fprintf (STREAM, "\tpush\tr%d", REGNO);       \
 709 }
 710
 711 #define ASM_OUTPUT_REG_POP(STREAM, REGNO)       \
 712 {                                               \
 713   gcc_assert (REGNO < 32);                      \
 714   fprintf (STREAM, "\tpop\tr%d", REGNO);        \
 715 }
 716
 717 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)          \
 718   avr_output_addr_vec_elt(STREAM, VALUE)
 719
 720 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
 721   (switch_to_section (progmem_section), \
 722    (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
 723
 724 #define ASM_OUTPUT_SKIP(STREAM, N)              \
 725 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
 726
 727 #define ASM_OUTPUT_ALIGN(STREAM, POWER)                 \
 728   do {                                                  \
 729       if ((POWER) > 1)                                  \
 730           fprintf (STREAM, "\t.p2align\t%d\n", POWER);  \
 731   } while (0)
 732
 733 #define CASE_VECTOR_MODE HImode
 734
 735 #define CASE_VALUES_THRESHOLD avr_case_values_threshold ()
 736
 737 #undef WORD_REGISTER_OPERATIONS
 738
 739 #define MOVE_MAX 4
 740
 741 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
 742
 743 #define Pmode HImode
 744
 745 #define FUNCTION_MODE HImode
 746
 747 #define DOLLARS_IN_IDENTIFIERS 0
 748
 749 #define NO_DOLLAR_IN_LABEL 1
 750
 751 #define TRAMPOLINE_TEMPLATE(FILE) \
 752   internal_error ("trampolines not supported")
 753
 754 #define TRAMPOLINE_SIZE 4
 755
 756 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT)                             \
 757 {                                                                             \
 758   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT);    \
 759   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
 760 }
 761 /* Store in cc_status the expressions
 762    that the condition codes will describe
 763    after execution of an instruction whose pattern is EXP.
 764    Do not alter them if the instruction would not alter the cc's.  */
 765
 766 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
 767
 768 /* The add insns don't set overflow in a usable way.  */
 769 #define CC_OVERFLOW_UNUSABLE 01000
 770 /* The mov,and,or,xor insns don't set carry.  That's ok though as the
 771    Z bit is all we need when doing unsigned comparisons on the result of
 772    these insns (since they're always with 0).  However, conditions.h has
 773    CC_NO_OVERFLOW defined for this purpose.  Rename it to something more
 774    understandable.  */
 775 #define CC_NO_CARRY CC_NO_OVERFLOW
 776
 777
 778 /* Output assembler code to FILE to increment profiler label # LABELNO
 779    for profiling a function entry.  */
 780
 781 #define FUNCTION_PROFILER(FILE, LABELNO)  \
 782   fprintf (FILE, "/* profiler %d */", (LABELNO))
 783
 784 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
 785                                           adjust_insn_length (INSN, LENGTH))
 786
 787 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
 788
 789 #define CC1_SPEC "%{profile:-p}"
 790
 791 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
 792     %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
 793     %{!fexceptions:-fno-exceptions}"
 794 /* A C string constant that tells the GCC driver program options to
 795    pass to `cc1plus'.  */
 796
 797 #define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;mmcu=avr35:-mmcu=avr3;mmcu=avr31:-mmcu=avr3;mmcu=avr51:-mmcu=avr5;\
 798 mmcu=*:-mmcu=%*}"
 799
 800 #define LINK_SPEC "\
 801 %{mrelax:--relax\
 802          %{mpmem-wrap-around:%{mmcu=at90usb8*:--pmem-wrap-around=8k}\
 803                              %{mmcu=atmega16*:--pmem-wrap-around=16k}\
 804                              %{mmcu=atmega32*|\
 805                                mmcu=at90can32*:--pmem-wrap-around=32k}\
 806                              %{mmcu=atmega64*|\
 807                                mmcu=at90can64*|\
 808                                mmcu=at90usb64*:--pmem-wrap-around=64k}}}\
 809 %{!mmcu*: -m avr2}\
 810 %{mmcu=at90s1200|\
 811   mmcu=attiny11|\
 812   mmcu=attiny12|\
 813   mmcu=attiny15|\
 814   mmcu=attiny28: -m avr1}\
 815 %{mmcu=attiny22|\
 816   mmcu=attiny26|\
 817   mmcu=at90s2*|\
 818   mmcu=at90s4*|\
 819   mmcu=at90s8*|\
 820   mmcu=at90c8*|\
 821   mmcu=at86rf401|\
 822   mmcu=ata6289|\
 823   mmcu=attiny13*|\
 824   mmcu=attiny2313|\
 825   mmcu=attiny24|\
 826   mmcu=attiny25|\
 827   mmcu=attiny261|\
 828   mmcu=attiny4*|\
 829   mmcu=attiny8*: -m avr2}\
 830 %{mmcu=atmega103|\
 831   mmcu=at43*|\
 832   mmcu=at76*|\
 833   mmcu=at90usb82|\
 834   mmcu=at90usb162|\
 835   mmcu=attiny16*|\
 836   mmcu=attiny32*: -m avr3}\
 837 %{mmcu=atmega8*|\
 838   mmcu=atmega4*|\
 839   mmcu=at90pwm1|\
 840   mmcu=at90pwm2|\
 841   mmcu=at90pwm2b|\
 842   mmcu=at90pwm3|\
 843   mmcu=at90pwm3b|\
 844   mmcu=at90pwm81: -m avr4}\
 845 %{mmcu=atmega16*|\
 846   mmcu=atmega32*|\
 847   mmcu=atmega406|\
 848   mmcu=atmega64*|\
 849   mmcu=atmega128*|\
 850   mmcu=at90can*|\
 851   mmcu=at90pwm216|\
 852   mmcu=at90pwm316|\
 853   mmcu=at90scr100|\
 854   mmcu=at90usb64*|\
 855   mmcu=at90usb128*|\
 856   mmcu=at94k|\
 857   mmcu=m3000*|\
 858   mmcu=m3001*: -m avr5}\
 859 %{mmcu=atmega256*:-m avr6}\
 860 %{mmcu=atmega324*|\
 861   mmcu=atmega325*|\
 862   mmcu=atmega328p|\
 863   mmcu=atmega329*|\
 864   mmcu=atmega406|\
 865   mmcu=atmega48*|\
 866   mmcu=atmega88*|\
 867   mmcu=atmega64|\
 868   mmcu=atmega644*|\
 869   mmcu=atmega645*|\
 870   mmcu=atmega649*|\
 871   mmcu=atmega128|\
 872   mmcu=atmega1284p|\
 873   mmcu=atmega162|\
 874   mmcu=atmega164*|\
 875   mmcu=atmega165*|\
 876   mmcu=atmega168*|\
 877   mmcu=atmega169*|\
 878   mmcu=atmega4hv*|\
 879   mmcu=atmega8hv*|\
 880   mmcu=atmega16hv*|\
 881   mmcu=atmega32hv*|\
 882   mmcu=attiny48|\
 883   mmcu=attiny88|\
 884   mmcu=attiny87|\
 885   mmcu=attiny167|\
 886   mmcu=attiny327|\
 887   mmcu=at90can*|\
 888   mmcu=at90pwm*|\
 889   mmcu=atmega8c1|\
 890   mmcu=atmega16c1|\
 891   mmcu=atmega32c1|\
 892   mmcu=atmega64c1|\
 893   mmcu=atmega8m1|\
 894   mmcu=atmega16m1|\
 895   mmcu=atmega32m1|\
 896   mmcu=atmega64m1|\
 897   mmcu=atmega16u4|\
 898   mmcu=atmega32u*|\
 899   mmcu=at90scr100|\
 900   mmcu=ata6289|\
 901   mmcu=at90usb*: -Tdata 0x800100}\
 902 %{mmcu=atmega640|\
 903   mmcu=atmega1280|\
 904   mmcu=atmega1281|\
 905   mmcu=atmega256*|\
 906   mmcu=atmega128rfa1: -Tdata 0x800200}\
 907 %{mmcu=m3000*|\
 908   mmcu=m3001*: -Tdata 0x801000}"
 909
 910 #define LIB_SPEC \
 911   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
 912
 913 #define LIBSTDCXX "-lgcc"
 914 /* No libstdc++ for now.  Empty string doesn't work.  */
 915
 916 #define LIBGCC_SPEC \
 917   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
 918
 919 #define STARTFILE_SPEC "%(crt_binutils)"
 920
 921 #define ENDFILE_SPEC ""
 922
 923 #define CRT_BINUTILS_SPECS "\
 924 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
 925 %{mmcu=attiny11:crttn11.o%s} \
 926 %{mmcu=attiny12:crttn12.o%s} \
 927 %{mmcu=attiny15:crttn15.o%s} \
 928 %{mmcu=attiny28:crttn28.o%s} \
 929 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
 930 %{mmcu=at90s2313:crts2313.o%s} \
 931 %{mmcu=at90s2323:crts2323.o%s} \
 932 %{mmcu=at90s2333:crts2333.o%s} \
 933 %{mmcu=at90s2343:crts2343.o%s} \
 934 %{mmcu=attiny22:crttn22.o%s} \
 935 %{mmcu=attiny26:crttn26.o%s} \
 936 %{mmcu=at90s4433:crts4433.o%s} \
 937 %{mmcu=at90s4414:crts4414.o%s} \
 938 %{mmcu=at90s4434:crts4434.o%s} \
 939 %{mmcu=at90c8534:crtc8534.o%s} \
 940 %{mmcu=at90s8535:crts8535.o%s} \
 941 %{mmcu=at86rf401:crt86401.o%s} \
 942 %{mmcu=attiny13:crttn13.o%s} \
 943 %{mmcu=attiny13a:crttn13a.o%s} \
 944 %{mmcu=attiny2313|mmcu=avr25:crttn2313.o%s} \
 945 %{mmcu=attiny24:crttn24.o%s} \
 946 %{mmcu=attiny44:crttn44.o%s} \
 947 %{mmcu=attiny84:crttn84.o%s} \
 948 %{mmcu=attiny25:crttn25.o%s} \
 949 %{mmcu=attiny45:crttn45.o%s} \
 950 %{mmcu=attiny85:crttn85.o%s} \
 951 %{mmcu=attiny261:crttn261.o%s} \
 952 %{mmcu=attiny461:crttn461.o%s} \
 953 %{mmcu=attiny861:crttn861.o%s} \
 954 %{mmcu=attiny43u:crttn43u.o%s} \
 955 %{mmcu=attiny87:crttn87.o%s} \
 956 %{mmcu=attiny48:crttn48.o%s} \
 957 %{mmcu=attiny88:crttn88.o%s} \
 958 %{mmcu=ata6289:crta6289.o%s} \
 959 %{mmcu=at43usb355|mmcu=avr3:crt43355.o%s} \
 960 %{mmcu=at76c711:crt76711.o%s} \
 961 %{mmcu=atmega103|mmcu=avr31:crtm103.o%s} \
 962 %{mmcu=at43usb320:crt43320.o%s} \
 963 %{mmcu=at90usb162|mmcu=avr35:crtusb162.o%s} \
 964 %{mmcu=at90usb82:crtusb82.o%s} \
 965 %{mmcu=attiny167:crttn167.o%s} \
 966 %{mmcu=attiny327:crttn327.o%s} \
 967 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
 968 %{mmcu=atmega48:crtm48.o%s} \
 969 %{mmcu=atmega48p:crtm48p.o%s} \
 970 %{mmcu=atmega88:crtm88.o%s} \
 971 %{mmcu=atmega88p:crtm88p.o%s} \
 972 %{mmcu=atmega8515:crtm8515.o%s} \
 973 %{mmcu=atmega8535:crtm8535.o%s} \
 974 %{mmcu=atmega8c1:crtm8c1.o%s} \
 975 %{mmcu=atmega8m1:crtm8m1.o%s} \
 976 %{mmcu=at90pwm1:crt90pwm1.o%s} \
 977 %{mmcu=at90pwm2:crt90pwm2.o%s} \
 978 %{mmcu=at90pwm2b:crt90pwm2b.o%s} \
 979 %{mmcu=at90pwm3:crt90pwm3.o%s} \
 980 %{mmcu=at90pwm3b:crt90pwm3b.o%s} \
 981 %{mmcu=at90pwm81:crt90pwm81.o%s} \
 982 %{mmcu=atmega16:crtm16.o%s} \
 983 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
 984 %{mmcu=atmega162:crtm162.o%s} \
 985 %{mmcu=atmega163:crtm163.o%s} \
 986 %{mmcu=atmega164p:crtm164p.o%s} \
 987 %{mmcu=atmega165:crtm165.o%s} \
 988 %{mmcu=atmega165p:crtm165p.o%s} \
 989 %{mmcu=atmega168:crtm168.o%s} \
 990 %{mmcu=atmega168p:crtm168p.o%s} \
 991 %{mmcu=atmega169:crtm169.o%s} \
 992 %{mmcu=atmega169p:crtm169p.o%s} \
 993 %{mmcu=atmega32:crtm32.o%s} \
 994 %{mmcu=atmega323:crtm323.o%s} \
 995 %{mmcu=atmega324p:crtm324p.o%s} \
 996 %{mmcu=atmega325:crtm325.o%s} \
 997 %{mmcu=atmega325p:crtm325p.o%s} \
 998 %{mmcu=atmega3250:crtm3250.o%s} \
 999 %{mmcu=atmega3250p:crtm3250p.o%s} \
1000 %{mmcu=atmega328p:crtm328p.o%s} \
1001 %{mmcu=atmega329:crtm329.o%s} \
1002 %{mmcu=atmega329p:crtm329p.o%s} \
1003 %{mmcu=atmega3290:crtm3290.o%s} \
1004 %{mmcu=atmega3290p:crtm3290p.o%s} \
1005 %{mmcu=atmega406:crtm406.o%s} \
1006 %{mmcu=atmega64:crtm64.o%s} \
1007 %{mmcu=atmega640:crtm640.o%s} \
1008 %{mmcu=atmega644:crtm644.o%s} \
1009 %{mmcu=atmega644p:crtm644p.o%s} \
1010 %{mmcu=atmega645:crtm645.o%s} \
1011 %{mmcu=atmega6450:crtm6450.o%s} \
1012 %{mmcu=atmega649:crtm649.o%s} \
1013 %{mmcu=atmega6490:crtm6490.o%s} \
1014 %{mmcu=atmega8hva:crtm8hva.o%s} \
1015 %{mmcu=atmega16hva:crtm16hva.o%s} \
1016 %{mmcu=atmega16hvb:crtm16hvb.o%s} \
1017 %{mmcu=atmega32hvb:crtm32hvb.o%s} \
1018 %{mmcu=atmega4hvd:crtm4hvd.o%s} \
1019 %{mmcu=atmega8hvd:crtm8hvd.o%s} \
1020 %{mmcu=at90can32:crtcan32.o%s} \
1021 %{mmcu=at90can64:crtcan64.o%s} \
1022 %{mmcu=at90pwm216:crt90pwm216.o%s} \
1023 %{mmcu=at90pwm316:crt90pwm316.o%s} \
1024 %{mmcu=atmega16c1:crtm16c1.o%s} \
1025 %{mmcu=atmega32c1:crtm32c1.o%s} \
1026 %{mmcu=atmega64c1:crtm64c1.o%s} \
1027 %{mmcu=atmega16m1:crtm16m1.o%s} \
1028 %{mmcu=atmega32m1:crtm32m1.o%s} \
1029 %{mmcu=atmega64m1:crtm64m1.o%s} \
1030 %{mmcu=atmega16u4:crtm16u4.o%s} \
1031 %{mmcu=atmega32u4:crtm32u4.o%s} \
1032 %{mmcu=atmega32u6:crtm32u6.o%s} \
1033 %{mmcu=at90scr100:crt90scr100.o%s} \
1034 %{mmcu=at90usb646:crtusb646.o%s} \
1035 %{mmcu=at90usb647:crtusb647.o%s} \
1036 %{mmcu=at94k:crtat94k.o%s} \
1037 %{mmcu=atmega128|mmcu=avr51:crtm128.o%s} \
1038 %{mmcu=atmega1280:crtm1280.o%s} \
1039 %{mmcu=atmega1281:crtm1281.o%s} \
1040 %{mmcu=atmega1284p:crtm1284p.o%s} \
1041 %{mmcu=at90can128:crtcan128.o%s} \
1042 %{mmcu=atmega128rfa1:crtm128rfa1.o%s} \
1043 %{mmcu=at90usb1286:crtusb1286.o%s} \
1044 %{mmcu=at90usb1287:crtusb1287.o%s} \
1045 %{mmcu=m3000f:crtm3000f.o%s} \
1046 %{mmcu=m3000s:crtm3000s.o%s} \
1047 %{mmcu=m3001b:crtm3001b.o%s} \
1048 %{mmcu=atmega2560|mmcu=avr6:crtm2560.o%s} \
1049 %{mmcu=atmega2561:crtm2561.o%s}"
1050
1051 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
1052
1053 /* This is the default without any -mmcu=* option (AT90S*).  */
1054 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
1055
1056 /* This is undefined macro for collect2 disabling */
1057 #define LINKER_NAME "ld"
1058
1059 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
1060   TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
1061
1062 /* Note that the other files fail to use these
1063    in some of the places where they should.  */
1064
1065 #if defined(__STDC__) || defined(ALMOST_STDC)
1066 #define AS2(a,b,c) #a " " #b "," #c
1067 #define AS2C(b,c) " " #b "," #c
1068 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
1069 #define AS1(a,b) #a " " #b
1070 #else
1071 #define AS1(a,b) "a     b"
1072 #define AS2(a,b,c) "a   b,c"
1073 #define AS2C(b,c) " b,c"
1074 #define AS3(a,b,c,d) "a b,c,d"
1075 #endif
1076 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
1077 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
1078 #define CR_TAB "\n\t"
1079
1080 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
1081
1082 #define DWARF2_DEBUGGING_INFO 1
1083
1084 #define DWARF2_ADDR_SIZE 4
1085
1086 #define OBJECT_FORMAT_ELF
1087
1088 #define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \
1089   avr_hard_regno_rename_ok (OLD_REG, NEW_REG)
1090
1091 /* A C structure for machine-specific, per-function data.
1092    This is added to the cfun structure.  */
1093 struct machine_function GTY(())
1094 {
1095   /* 'true' - if the current function is a leaf function.  */
1096   int is_leaf;
1097
1098   /* 'true' - if current function is a naked function.  */
1099   int is_naked;
1100
1101   /* 'true' - if current function is an interrupt function
1102      as specified by the "interrupt" attribute.  */
1103   int is_interrupt;
1104
1105   /* 'true' - if current function is a signal function
1106      as specified by the "signal" attribute.  */
1107   int is_signal;
1108
1109   /* 'true' - if current function is a 'task' function
1110      as specified by the "OS_task" attribute.  */
1111   int is_OS_task;
1112
1113   /* 'true' - if current function is a 'main' function
1114      as specified by the "OS_main" attribute.  */
1115   int is_OS_main;
1116 };