gcc/config/avr/avr.h

   1 /* Definitions of target machine for GNU compiler,
   2    for ATMEL AVR at90s8515, ATmega103/103L, ATmega603/603L microcontrollers.
   3    Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007,
   4    2008 Free Software Foundation, Inc.
   5    Contributed by Denis Chertykov (denisc@overta.ru)
   6
   7 This file is part of GCC.
   8
   9 GCC is free software; you can redistribute it and/or modify
  10 it under the terms of the GNU General Public License as published by
  11 the Free Software Foundation; either version 3, or (at your option)
  12 any later version.
  13
  14 GCC is distributed in the hope that it will be useful,
  15 but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 GNU General Public License for more details.
  18
  19 You should have received a copy of the GNU General Public License
  20 along with GCC; see the file COPYING3.  If not see
  21 <http://www.gnu.org/licenses/>.  */
  22
  23 /* Names to predefine in the preprocessor for this target machine.  */
  24
  25 struct base_arch_s {
  26   /* Assembler only.  */
  27   int asm_only;
  28
  29   /* Core have 'MUL*' instructions.  */
  30   int have_mul;
  31
  32   /* Core have 'CALL' and 'JMP' instructions.  */
  33   int have_jmp_call;
  34
  35   /* Core have 'MOVW' and 'LPM Rx,Z' instructions.  */
  36   int have_movw_lpmx;
  37
  38   /* Core have 'ELPM' instructions.  */
  39   int have_elpm;
  40
  41   /* Core have 'ELPM Rx,Z' instructions.  */
  42   int have_elpmx;
  43
  44   /* Core have 'EICALL' and 'EIJMP' instructions.  */
  45   int have_eijmp_eicall;
  46
  47   /* Reserved. */
  48   int reserved;
  49
  50   const char *const macro;
  51 };
  52
  53 extern const struct base_arch_s *avr_current_arch;
  54
  55 #define TARGET_CPU_CPP_BUILTINS()               \
  56   do                                            \
  57     {                                           \
  58       builtin_define_std ("AVR");               \
  59       if (avr_current_arch->macro)              \
  60         builtin_define (avr_current_arch->macro);       \
  61       if (avr_extra_arch_macro)                 \
  62         builtin_define (avr_extra_arch_macro);  \
  63       if (avr_current_arch->have_elpm)          \
  64         builtin_define ("__AVR_HAVE_RAMPZ__");  \
  65       if (avr_current_arch->have_elpm)          \
  66         builtin_define ("__AVR_HAVE_ELPM__");   \
  67       if (avr_current_arch->have_elpmx)         \
  68         builtin_define ("__AVR_HAVE_ELPMX__");  \
  69       if (avr_current_arch->have_movw_lpmx)     \
  70         {                                       \
  71           builtin_define ("__AVR_HAVE_MOVW__"); \
  72           builtin_define ("__AVR_HAVE_LPMX__"); \
  73         }                                       \
  74       if (avr_current_arch->asm_only)           \
  75         builtin_define ("__AVR_ASM_ONLY__");    \
  76       if (avr_current_arch->have_mul)           \
  77         {                                       \
  78           builtin_define ("__AVR_ENHANCED__");  \
  79           builtin_define ("__AVR_HAVE_MUL__");  \
  80         }                                       \
  81       if (avr_current_arch->have_jmp_call)      \
  82         {                                       \
  83           builtin_define ("__AVR_MEGA__");      \
  84           builtin_define ("__AVR_HAVE_JMP_CALL__");     \
  85         }                                       \
  86       if (avr_current_arch->have_eijmp_eicall)  \
  87         {                                       \
  88           builtin_define ("__AVR_HAVE_EIJMP_EICALL__"); \
  89           builtin_define ("__AVR_3_BYTE_PC__"); \
  90         }                                       \
  91       else                                      \
  92         {                                       \
  93           builtin_define ("__AVR_2_BYTE_PC__"); \
  94         }                                       \
  95       if (TARGET_NO_INTERRUPTS)                 \
  96         builtin_define ("__NO_INTERRUPTS__");   \
  97     }                                           \
  98   while (0)
  99
 100 extern const char *avr_extra_arch_macro;
 101
 102 #if !defined(IN_LIBGCC2) && !defined(IN_TARGET_LIBS)
 103 extern GTY(()) section *progmem_section;
 104 #endif
 105
 106 #define AVR_HAVE_JMP_CALL (avr_current_arch->have_jmp_call && !TARGET_SHORT_CALLS)
 107 #define AVR_HAVE_MUL (avr_current_arch->have_mul)
 108 #define AVR_HAVE_MOVW (avr_current_arch->have_movw_lpmx)
 109 #define AVR_HAVE_LPMX (avr_current_arch->have_movw_lpmx)
 110 #define AVR_HAVE_RAMPZ (avr_current_arch->have_elpm)
 111 #define AVR_HAVE_EIJMP_EICALL (avr_current_arch->have_eijmp_eicall)
 112
 113 #define AVR_2_BYTE_PC (!AVR_HAVE_EIJMP_EICALL)
 114 #define AVR_3_BYTE_PC (AVR_HAVE_EIJMP_EICALL)
 115
 116 #define TARGET_VERSION fprintf (stderr, " (GNU assembler syntax)");
 117
 118 #define OVERRIDE_OPTIONS avr_override_options ()
 119
 120 #define CAN_DEBUG_WITHOUT_FP
 121
 122 #define BITS_BIG_ENDIAN 0
 123 #define BYTES_BIG_ENDIAN 0
 124 #define WORDS_BIG_ENDIAN 0
 125
 126 #ifdef IN_LIBGCC2
 127 /* This is to get correct SI and DI modes in libgcc2.c (32 and 64 bits).  */
 128 #define UNITS_PER_WORD 4
 129 #else
 130 /* Width of a word, in units (bytes).  */
 131 #define UNITS_PER_WORD 1
 132 #endif
 133
 134 #define POINTER_SIZE 16
 135
 136
 137 /* Maximum sized of reasonable data type
 138    DImode or Dfmode ...  */
 139 #define MAX_FIXED_MODE_SIZE 32
 140
 141 #define PARM_BOUNDARY 8
 142
 143 #define FUNCTION_BOUNDARY 8
 144
 145 #define EMPTY_FIELD_BOUNDARY 8
 146
 147 /* No data type wants to be aligned rounder than this.  */
 148 #define BIGGEST_ALIGNMENT 8
 149
 150 #define MAX_OFILE_ALIGNMENT (32768 * 8)
 151
 152 #define TARGET_VTABLE_ENTRY_ALIGN 8
 153
 154 #define STRICT_ALIGNMENT 0
 155
 156 #define INT_TYPE_SIZE (TARGET_INT8 ? 8 : 16)
 157 #define SHORT_TYPE_SIZE (INT_TYPE_SIZE == 8 ? INT_TYPE_SIZE : 16)
 158 #define LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 16 : 32)
 159 #define LONG_LONG_TYPE_SIZE (INT_TYPE_SIZE == 8 ? 32 : 64)
 160 #define FLOAT_TYPE_SIZE 32
 161 #define DOUBLE_TYPE_SIZE 32
 162 #define LONG_DOUBLE_TYPE_SIZE 32
 163
 164 #define DEFAULT_SIGNED_CHAR 1
 165
 166 #define SIZE_TYPE (INT_TYPE_SIZE == 8 ? "long unsigned int" : "unsigned int")
 167 #define PTRDIFF_TYPE (INT_TYPE_SIZE == 8 ? "long int" :"int")
 168
 169 #define WCHAR_TYPE_SIZE 16
 170
 171 #define FIRST_PSEUDO_REGISTER 36
 172
 173 #define FIXED_REGISTERS {\
 174   1,1,/* r0 r1 */\
 175   0,0,/* r2 r3 */\
 176   0,0,/* r4 r5 */\
 177   0,0,/* r6 r7 */\
 178   0,0,/* r8 r9 */\
 179   0,0,/* r10 r11 */\
 180   0,0,/* r12 r13 */\
 181   0,0,/* r14 r15 */\
 182   0,0,/* r16 r17 */\
 183   0,0,/* r18 r19 */\
 184   0,0,/* r20 r21 */\
 185   0,0,/* r22 r23 */\
 186   0,0,/* r24 r25 */\
 187   0,0,/* r26 r27 */\
 188   0,0,/* r28 r29 */\
 189   0,0,/* r30 r31 */\
 190   1,1,/*  STACK */\
 191   1,1 /* arg pointer */  }
 192
 193 #define CALL_USED_REGISTERS {                   \
 194   1,1,/* r0 r1 */                               \
 195     0,0,/* r2 r3 */                             \
 196     0,0,/* r4 r5 */                             \
 197     0,0,/* r6 r7 */                             \
 198     0,0,/* r8 r9 */                             \
 199     0,0,/* r10 r11 */                           \
 200     0,0,/* r12 r13 */                           \
 201     0,0,/* r14 r15 */                           \
 202     0,0,/* r16 r17 */                           \
 203     1,1,/* r18 r19 */                           \
 204     1,1,/* r20 r21 */                           \
 205     1,1,/* r22 r23 */                           \
 206     1,1,/* r24 r25 */                           \
 207     1,1,/* r26 r27 */                           \
 208     0,0,/* r28 r29 */                           \
 209     1,1,/* r30 r31 */                           \
 210     1,1,/*  STACK */                            \
 211     1,1 /* arg pointer */  }
 212
 213 #define REG_ALLOC_ORDER {                       \
 214     24,25,                                      \
 215     18,19,                                      \
 216     20,21,                                      \
 217     22,23,                                      \
 218     30,31,                                      \
 219     26,27,                                      \
 220     28,29,                                      \
 221     17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,    \
 222     0,1,                                        \
 223     32,33,34,35                                 \
 224     }
 225
 226 #define ORDER_REGS_FOR_LOCAL_ALLOC order_regs_for_local_alloc ()
 227
 228
 229 #define HARD_REGNO_NREGS(REGNO, MODE) ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
 230
 231 #define HARD_REGNO_MODE_OK(REGNO, MODE) avr_hard_regno_mode_ok(REGNO, MODE)
 232
 233 #define MODES_TIEABLE_P(MODE1, MODE2) 1
 234
 235 enum reg_class {
 236   NO_REGS,
 237   R0_REG,                       /* r0 */
 238   POINTER_X_REGS,               /* r26 - r27 */
 239   POINTER_Y_REGS,               /* r28 - r29 */
 240   POINTER_Z_REGS,               /* r30 - r31 */
 241   STACK_REG,                    /* STACK */
 242   BASE_POINTER_REGS,            /* r28 - r31 */
 243   POINTER_REGS,                 /* r26 - r31 */
 244   ADDW_REGS,                    /* r24 - r31 */
 245   SIMPLE_LD_REGS,               /* r16 - r23 */
 246   LD_REGS,                      /* r16 - r31 */
 247   NO_LD_REGS,                   /* r0 - r15 */
 248   GENERAL_REGS,                 /* r0 - r31 */
 249   ALL_REGS, LIM_REG_CLASSES
 250 };
 251
 252
 253 #define N_REG_CLASSES (int)LIM_REG_CLASSES
 254
 255 #define REG_CLASS_NAMES {                                       \
 256                  "NO_REGS",                                     \
 257                    "R0_REG",    /* r0 */                        \
 258                    "POINTER_X_REGS", /* r26 - r27 */            \
 259                    "POINTER_Y_REGS", /* r28 - r29 */            \
 260                    "POINTER_Z_REGS", /* r30 - r31 */            \
 261                    "STACK_REG", /* STACK */                     \
 262                    "BASE_POINTER_REGS", /* r28 - r31 */         \
 263                    "POINTER_REGS", /* r26 - r31 */              \
 264                    "ADDW_REGS", /* r24 - r31 */                 \
 265                    "SIMPLE_LD_REGS", /* r16 - r23 */            \
 266                    "LD_REGS",   /* r16 - r31 */                 \
 267                    "NO_LD_REGS", /* r0 - r15 */                 \
 268                    "GENERAL_REGS", /* r0 - r31 */               \
 269                    "ALL_REGS" }
 270
 271 #define REG_CLASS_CONTENTS {                                            \
 272   {0x00000000,0x00000000},      /* NO_REGS */                           \
 273   {0x00000001,0x00000000},      /* R0_REG */                            \
 274   {3 << REG_X,0x00000000},      /* POINTER_X_REGS, r26 - r27 */         \
 275   {3 << REG_Y,0x00000000},      /* POINTER_Y_REGS, r28 - r29 */         \
 276   {3 << REG_Z,0x00000000},      /* POINTER_Z_REGS, r30 - r31 */         \
 277   {0x00000000,0x00000003},      /* STACK_REG, STACK */                  \
 278   {(3 << REG_Y) | (3 << REG_Z),                                         \
 279      0x00000000},               /* BASE_POINTER_REGS, r28 - r31 */      \
 280   {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z),                          \
 281      0x00000000},               /* POINTER_REGS, r26 - r31 */           \
 282   {(3 << REG_X) | (3 << REG_Y) | (3 << REG_Z) | (3 << REG_W),           \
 283      0x00000000},               /* ADDW_REGS, r24 - r31 */              \
 284   {0x00ff0000,0x00000000},      /* SIMPLE_LD_REGS r16 - r23 */          \
 285   {(3 << REG_X)|(3 << REG_Y)|(3 << REG_Z)|(3 << REG_W)|(0xff << 16),    \
 286      0x00000000},       /* LD_REGS, r16 - r31 */                        \
 287   {0x0000ffff,0x00000000},      /* NO_LD_REGS  r0 - r15 */              \
 288   {0xffffffff,0x00000000},      /* GENERAL_REGS, r0 - r31 */            \
 289   {0xffffffff,0x00000003}       /* ALL_REGS */                          \
 290 }
 291
 292 #define REGNO_REG_CLASS(R) avr_regno_reg_class(R)
 293
 294 #define BASE_REG_CLASS (reload_completed ? BASE_POINTER_REGS : POINTER_REGS)
 295
 296 #define INDEX_REG_CLASS NO_REGS
 297
 298 #define REGNO_OK_FOR_BASE_P(r) (((r) < FIRST_PSEUDO_REGISTER            \
 299                                  && ((r) == REG_X                       \
 300                                      || (r) == REG_Y                    \
 301                                      || (r) == REG_Z                    \
 302                                      || (r) == ARG_POINTER_REGNUM))     \
 303                                 || (reg_renumber                        \
 304                                     && (reg_renumber[r] == REG_X        \
 305                                         || reg_renumber[r] == REG_Y     \
 306                                         || reg_renumber[r] == REG_Z     \
 307                                         || (reg_renumber[r]             \
 308                                             == ARG_POINTER_REGNUM))))
 309
 310 #define REGNO_OK_FOR_INDEX_P(NUM) 0
 311
 312 #define PREFERRED_RELOAD_CLASS(X, CLASS) preferred_reload_class(X,CLASS)
 313
 314 #define SMALL_REGISTER_CLASSES 1
 315
 316 #define CLASS_LIKELY_SPILLED_P(c) class_likely_spilled_p(c)
 317
 318 #define CLASS_MAX_NREGS(CLASS, MODE)   class_max_nregs (CLASS, MODE)
 319
 320 #define STACK_PUSH_CODE POST_DEC
 321
 322 #define STACK_GROWS_DOWNWARD
 323
 324 #define STARTING_FRAME_OFFSET 1
 325
 326 #define STACK_POINTER_OFFSET 1
 327
 328 #define FIRST_PARM_OFFSET(FUNDECL) 0
 329
 330 #define STACK_BOUNDARY 8
 331
 332 #define STACK_POINTER_REGNUM 32
 333
 334 #define FRAME_POINTER_REGNUM REG_Y
 335
 336 #define ARG_POINTER_REGNUM 34
 337
 338 #define STATIC_CHAIN_REGNUM 2
 339
 340 #define FRAME_POINTER_REQUIRED frame_pointer_required_p()
 341
 342 /* Offset from the frame pointer register value to the top of the stack.  */
 343 #define FRAME_POINTER_CFA_OFFSET(FNDECL) 0
 344
 345 #define ELIMINABLE_REGS {                                       \
 346       {ARG_POINTER_REGNUM, FRAME_POINTER_REGNUM},               \
 347         {FRAME_POINTER_REGNUM, STACK_POINTER_REGNUM}            \
 348        ,{FRAME_POINTER_REGNUM+1,STACK_POINTER_REGNUM+1}}
 349
 350 #define CAN_ELIMINATE(FROM, TO) (((FROM) == ARG_POINTER_REGNUM             \
 351                                   && (TO) == FRAME_POINTER_REGNUM)         \
 352                                  || (((FROM) == FRAME_POINTER_REGNUM       \
 353                                       || (FROM) == FRAME_POINTER_REGNUM+1) \
 354                                      && ! FRAME_POINTER_REQUIRED           \
 355                                      ))
 356
 357 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)                    \
 358      OFFSET = initial_elimination_offset (FROM, TO)
 359
 360 #define RETURN_ADDR_RTX(count, x) \
 361   gen_rtx_MEM (Pmode, memory_address (Pmode, plus_constant (tem, 1)))
 362
 363 /* Don't use Push rounding. expr.c: emit_single_push_insn is broken
 364    for POST_DEC targets (PR27386).  */
 365 /*#define PUSH_ROUNDING(NPUSHED) (NPUSHED)*/
 366
 367 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
 368
 369 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) (function_arg (&(CUM), MODE, TYPE, NAMED))
 370
 371 typedef struct avr_args {
 372   int nregs;                    /* # registers available for passing */
 373   int regno;                    /* next available register number */
 374 } CUMULATIVE_ARGS;
 375
 376 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
 377   init_cumulative_args (&(CUM), FNTYPE, LIBNAME, FNDECL)
 378
 379 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)    \
 380   (function_arg_advance (&CUM, MODE, TYPE, NAMED))
 381
 382 #define FUNCTION_ARG_REGNO_P(r) function_arg_regno_p(r)
 383
 384 extern int avr_reg_order[];
 385
 386 #define RET_REGISTER avr_ret_register ()
 387
 388 #define FUNCTION_VALUE(VALTYPE, FUNC) avr_function_value (VALTYPE, FUNC)
 389
 390 #define LIBCALL_VALUE(MODE)  avr_libcall_value (MODE)
 391
 392 #define FUNCTION_VALUE_REGNO_P(N) ((int) (N) == RET_REGISTER)
 393
 394 #define DEFAULT_PCC_STRUCT_RETURN 0
 395
 396 #define EPILOGUE_USES(REGNO) avr_epilogue_uses(REGNO)
 397
 398 #define HAVE_POST_INCREMENT 1
 399 #define HAVE_PRE_DECREMENT 1
 400
 401 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
 402
 403 #define MAX_REGS_PER_ADDRESS 1
 404
 405 #ifdef REG_OK_STRICT
 406 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 407 {                                                       \
 408   if (legitimate_address_p (mode, operand, 1))          \
 409     goto ADDR;                                          \
 410 }
 411 #  else
 412 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 413 {                                                       \
 414   if (legitimate_address_p (mode, operand, 0))          \
 415     goto ADDR;                                          \
 416 }
 417 #endif
 418
 419 #define REG_OK_FOR_BASE_NOSTRICT_P(X) \
 420   (REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X))
 421
 422 #define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
 423
 424 #ifdef REG_OK_STRICT
 425 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X)
 426 #else
 427 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NOSTRICT_P (X)
 428 #endif
 429
 430 #define REG_OK_FOR_INDEX_P(X) 0
 431
 432 #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN)                          \
 433 {                                                                       \
 434   (X) = legitimize_address (X, OLDX, MODE);                             \
 435   if (memory_address_p (MODE, X))                                       \
 436     goto WIN;                                                           \
 437 }
 438
 439 #define XEXP_(X,Y) (X)
 440 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN)    \
 441 do {                                                                        \
 442   if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC))     \
 443     {                                                                       \
 444       push_reload (XEXP (X,0), XEXP (X,0), &XEXP (X,0), &XEXP (X,0),        \
 445                    POINTER_REGS, GET_MODE (X),GET_MODE (X) , 0, 0,          \
 446                    OPNUM, RELOAD_OTHER);                                    \
 447       goto WIN;                                                             \
 448     }                                                                       \
 449   if (GET_CODE (X) == PLUS                                                  \
 450       && REG_P (XEXP (X, 0))                                                \
 451       && GET_CODE (XEXP (X, 1)) == CONST_INT                                \
 452       && INTVAL (XEXP (X, 1)) >= 1)                                         \
 453     {                                                                       \
 454       int fit = INTVAL (XEXP (X, 1)) <= (64 - GET_MODE_SIZE (MODE));        \
 455       if (fit)                                                              \
 456         {                                                                   \
 457           if (reg_equiv_address[REGNO (XEXP (X, 0))] != 0)                  \
 458             {                                                               \
 459               int regno = REGNO (XEXP (X, 0));                              \
 460               rtx mem = make_memloc (X, regno);                             \
 461               push_reload (XEXP (mem,0), NULL, &XEXP (mem,0), NULL,         \
 462                            POINTER_REGS, Pmode, VOIDmode, 0, 0,             \
 463                            1, ADDR_TYPE (TYPE));                            \
 464               push_reload (mem, NULL_RTX, &XEXP (X, 0), NULL,               \
 465                            BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
 466                            OPNUM, TYPE);                                    \
 467               goto WIN;                                                     \
 468             }                                                               \
 469           push_reload (XEXP (X, 0), NULL_RTX, &XEXP (X, 0), NULL,           \
 470                        BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,     \
 471                        OPNUM, TYPE);                                        \
 472           goto WIN;                                                         \
 473         }                                                                   \
 474       else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
 475         {                                                                   \
 476           push_reload (X, NULL_RTX, &X, NULL,                               \
 477                        POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,          \
 478                        OPNUM, TYPE);                                        \
 479           goto WIN;                                                         \
 480         }                                                                   \
 481     }                                                                       \
 482 } while(0)
 483
 484 #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
 485
 486 #define LEGITIMATE_CONSTANT_P(X) 1
 487
 488 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
 489                                             : (TO) == STACK_REG ? 12 \
 490                                             : 2)
 491
 492 #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 :   \
 493                                          (MODE)==HImode ? 4 :   \
 494                                          (MODE)==SImode ? 8 :   \
 495                                          (MODE)==SFmode ? 8 : 16)
 496
 497 #define BRANCH_COST 0
 498
 499 #define SLOW_BYTE_ACCESS 0
 500
 501 #define NO_FUNCTION_CSE
 502
 503 #define TEXT_SECTION_ASM_OP "\t.text"
 504
 505 #define DATA_SECTION_ASM_OP "\t.data"
 506
 507 #define BSS_SECTION_ASM_OP "\t.section .bss"
 508
 509 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
 510    There are no shared libraries on this target, and these sections are
 511    placed in the read-only program memory, so they are not writable.  */
 512
 513 #undef CTORS_SECTION_ASM_OP
 514 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"a\",@progbits"
 515
 516 #undef DTORS_SECTION_ASM_OP
 517 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits"
 518
 519 #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor
 520
 521 #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
 522
 523 #define JUMP_TABLES_IN_TEXT_SECTION 0
 524
 525 #define ASM_COMMENT_START " ; "
 526
 527 #define ASM_APP_ON "/* #APP */\n"
 528
 529 #define ASM_APP_OFF "/* #NOAPP */\n"
 530
 531 /* Switch into a generic section.  */
 532 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
 533 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
 534
 535 #define ASM_OUTPUT_ASCII(FILE, P, SIZE)  gas_output_ascii (FILE,P,SIZE)
 536
 537 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C, STR) ((C) == '\n' || ((C) == '$'))
 538
 539 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)                     \
 540 do {                                                                       \
 541      fputs ("\t.comm ", (STREAM));                                         \
 542      assemble_name ((STREAM), (NAME));                                     \
 543      fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE));                \
 544 } while (0)
 545
 546 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED)                 \
 547   asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
 548
 549 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED)                   \
 550 do {                                                                    \
 551      fputs ("\t.lcomm ", (STREAM));                                     \
 552      assemble_name ((STREAM), (NAME));                                  \
 553      fprintf ((STREAM), ",%d\n", (int)(SIZE));                          \
 554 } while (0)
 555
 556 #undef TYPE_ASM_OP
 557 #undef SIZE_ASM_OP
 558 #undef WEAK_ASM_OP
 559 #define TYPE_ASM_OP     "\t.type\t"
 560 #define SIZE_ASM_OP     "\t.size\t"
 561 #define WEAK_ASM_OP     "\t.weak\t"
 562 /* Define the strings used for the special svr4 .type and .size directives.
 563    These strings generally do not vary from one system running svr4 to
 564    another, but if a given system (e.g. m88k running svr) needs to use
 565    different pseudo-op names for these, they may be overridden in the
 566    file which includes this one.  */
 567
 568
 569 #undef TYPE_OPERAND_FMT
 570 #define TYPE_OPERAND_FMT        "@%s"
 571 /* The following macro defines the format used to output the second
 572    operand of the .type assembler directive.  Different svr4 assemblers
 573    expect various different forms for this operand.  The one given here
 574    is just a default.  You may need to override it in your machine-
 575    specific tm.h file (depending upon the particulars of your assembler).  */
 576
 577 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 578 do {                                                            \
 579      ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");        \
 580      ASM_OUTPUT_LABEL (FILE, NAME);                             \
 581 } while (0)
 582
 583 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                    \
 584   do {                                                                  \
 585     if (!flag_inhibit_size_directive)                                   \
 586       ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                           \
 587   } while (0)
 588
 589 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 590 do {                                                                    \
 591   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");                     \
 592   size_directive_output = 0;                                            \
 593   if (!flag_inhibit_size_directive && DECL_SIZE (DECL))                 \
 594     {                                                                   \
 595       size_directive_output = 1;                                        \
 596       ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME,                            \
 597                                  int_size_in_bytes (TREE_TYPE (DECL))); \
 598     }                                                                   \
 599   ASM_OUTPUT_LABEL(FILE, NAME);                                         \
 600 } while (0)
 601
 602 #undef ASM_FINISH_DECLARE_OBJECT
 603 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 604 do {                                                                     \
 605      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 606      HOST_WIDE_INT size;                                                 \
 607      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 608          && ! AT_END && TOP_LEVEL                                        \
 609          && DECL_INITIAL (DECL) == error_mark_node                       \
 610          && !size_directive_output)                                      \
 611        {                                                                 \
 612          size_directive_output = 1;                                      \
 613          size = int_size_in_bytes (TREE_TYPE (DECL));                    \
 614          ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size);                   \
 615        }                                                                 \
 616    } while (0)
 617
 618
 619 #define ESCAPES \
 620 "\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\
 621 \0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
 622 \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\
 623 \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\
 624 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
 625 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
 626 \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\
 627 \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"
 628 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
 629    ASM_OUTPUT_LIMITED_STRING macros.  Each byte in the table
 630    corresponds to a particular byte value [0..255].  For any
 631    given byte value, if the value in the corresponding table
 632    position is zero, the given character can be output directly.
 633    If the table value is 1, the byte must be output as a \ooo
 634    octal escape.  If the tables value is anything else, then the
 635    byte value should be output as a \ followed by the value
 636    in the table.  Note that we can use standard UN*X escape
 637    sequences for many control characters, but we don't use
 638    \a to represent BEL because some svr4 assemblers (e.g. on
 639    the i386) don't know about that.  Also, we don't use \v
 640    since some versions of gas, such as 2.2 did not accept it.  */
 641
 642 #define STRING_LIMIT    ((unsigned) 64)
 643 #define STRING_ASM_OP   "\t.string\t"
 644 /* Some svr4 assemblers have a limit on the number of characters which
 645    can appear in the operand of a .string directive.  If your assembler
 646    has such a limitation, you should define STRING_LIMIT to reflect that
 647    limit.  Note that at least some svr4 assemblers have a limit on the
 648    actual number of bytes in the double-quoted string, and that they
 649    count each character in an escape sequence as one byte.  Thus, an
 650    escape sequence like \377 would count as four bytes.
 651
 652    If your target assembler doesn't support the .string directive, you
 653    should define this to zero.  */
 654
 655 /* Globalizing directive for a label.  */
 656 #define GLOBAL_ASM_OP ".global\t"
 657
 658 #define SET_ASM_OP      "\t.set\t"
 659
 660 #define ASM_WEAKEN_LABEL(FILE, NAME)    \
 661   do                                    \
 662     {                                   \
 663       fputs ("\t.weak\t", (FILE));      \
 664       assemble_name ((FILE), (NAME));   \
 665       fputc ('\n', (FILE));             \
 666     }                                   \
 667   while (0)
 668
 669 #define SUPPORTS_WEAK 1
 670
 671 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)        \
 672 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
 673
 674 #define HAS_INIT_SECTION 1
 675
 676 #define REGISTER_NAMES {                                \
 677   "r0","r1","r2","r3","r4","r5","r6","r7",              \
 678     "r8","r9","r10","r11","r12","r13","r14","r15",      \
 679     "r16","r17","r18","r19","r20","r21","r22","r23",    \
 680     "r24","r25","r26","r27","r28","r29","r30","r31",    \
 681     "__SP_L__","__SP_H__","argL","argH"}
 682
 683 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
 684
 685 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
 686
 687 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~' || (CODE) == '!')
 688
 689 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
 690
 691 #define USER_LABEL_PREFIX ""
 692
 693 #define ASSEMBLER_DIALECT AVR_HAVE_MOVW
 694
 695 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO)      \
 696 {                                               \
 697   gcc_assert (REGNO < 32);                      \
 698   fprintf (STREAM, "\tpush\tr%d", REGNO);       \
 699 }
 700
 701 #define ASM_OUTPUT_REG_POP(STREAM, REGNO)       \
 702 {                                               \
 703   gcc_assert (REGNO < 32);                      \
 704   fprintf (STREAM, "\tpop\tr%d", REGNO);        \
 705 }
 706
 707 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)          \
 708   avr_output_addr_vec_elt(STREAM, VALUE)
 709
 710 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
 711   (switch_to_section (progmem_section), \
 712    (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
 713
 714 #define ASM_OUTPUT_SKIP(STREAM, N)              \
 715 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
 716
 717 #define ASM_OUTPUT_ALIGN(STREAM, POWER)                 \
 718   do {                                                  \
 719       if ((POWER) > 1)                                  \
 720           fprintf (STREAM, "\t.p2align\t%d\n", POWER);  \
 721   } while (0)
 722
 723 #define CASE_VECTOR_MODE HImode
 724
 725 extern int avr_case_values_threshold;
 726
 727 #define CASE_VALUES_THRESHOLD avr_case_values_threshold
 728
 729 #undef WORD_REGISTER_OPERATIONS
 730
 731 #define MOVE_MAX 4
 732
 733 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
 734
 735 #define Pmode HImode
 736
 737 #define FUNCTION_MODE HImode
 738
 739 #define DOLLARS_IN_IDENTIFIERS 0
 740
 741 #define NO_DOLLAR_IN_LABEL 1
 742
 743 #define TRAMPOLINE_TEMPLATE(FILE) \
 744   internal_error ("trampolines not supported")
 745
 746 #define TRAMPOLINE_SIZE 4
 747
 748 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT)                             \
 749 {                                                                             \
 750   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT);    \
 751   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
 752 }
 753 /* Store in cc_status the expressions
 754    that the condition codes will describe
 755    after execution of an instruction whose pattern is EXP.
 756    Do not alter them if the instruction would not alter the cc's.  */
 757
 758 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
 759
 760 /* The add insns don't set overflow in a usable way.  */
 761 #define CC_OVERFLOW_UNUSABLE 01000
 762 /* The mov,and,or,xor insns don't set carry.  That's ok though as the
 763    Z bit is all we need when doing unsigned comparisons on the result of
 764    these insns (since they're always with 0).  However, conditions.h has
 765    CC_NO_OVERFLOW defined for this purpose.  Rename it to something more
 766    understandable.  */
 767 #define CC_NO_CARRY CC_NO_OVERFLOW
 768
 769
 770 /* Output assembler code to FILE to increment profiler label # LABELNO
 771    for profiling a function entry.  */
 772
 773 #define FUNCTION_PROFILER(FILE, LABELNO)  \
 774   fprintf (FILE, "/* profiler %d */", (LABELNO))
 775
 776 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
 777                                           adjust_insn_length (INSN, LENGTH))
 778
 779 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
 780
 781 #define CC1_SPEC "%{profile:-p}"
 782
 783 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
 784     %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
 785     %{!fexceptions:-fno-exceptions}"
 786 /* A C string constant that tells the GCC driver program options to
 787    pass to `cc1plus'.  */
 788
 789 #define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;mmcu=avr35:-mmcu=avr3;mmcu=avr31:-mmcu=avr3;mmcu=avr51:-mmcu=avr5;\
 790 mmcu=*:-mmcu=%*}"
 791
 792 #define LINK_SPEC "\
 793 %{mrelax:--relax\
 794          %{mpmem-wrap-around:%{mmcu=at90usb8*:--pmem-wrap-around=8k}\
 795                              %{mmcu=atmega16*:--pmem-wrap-around=16k}\
 796                              %{mmcu=atmega32*|\
 797                                mmcu=at90can32*:--pmem-wrap-around=32k}\
 798                              %{mmcu=atmega64*|\
 799                                mmcu=at90can64*|\
 800                                mmcu=at90usb64*:--pmem-wrap-around=64k}}}\
 801 %{!mmcu*: -m avr2}\
 802 %{mmcu=at90s1200|\
 803   mmcu=attiny11|\
 804   mmcu=attiny12|\
 805   mmcu=attiny15|\
 806   mmcu=attiny28: -m avr1}\
 807 %{mmcu=attiny22|\
 808   mmcu=attiny26|\
 809   mmcu=at90s2*|\
 810   mmcu=at90s4*|\
 811   mmcu=at90s8*|\
 812   mmcu=at90c8*|\
 813   mmcu=at86rf401|\
 814   mmcu=attiny13|\
 815   mmcu=attiny2313|\
 816   mmcu=attiny24|\
 817   mmcu=attiny25|\
 818   mmcu=attiny261|\
 819   mmcu=attiny4*|\
 820   mmcu=attiny8*: -m avr2}\
 821 %{mmcu=atmega103|\
 822   mmcu=at43*|\
 823   mmcu=at76*|\
 824   mmcu=at90usb82|\
 825   mmcu=at90usb162: -m avr3}\
 826 %{mmcu=atmega8*|\
 827   mmcu=atmega48*|\
 828   mmcu=at90pwm1|\
 829   mmcu=at90pwm2|\
 830   mmcu=at90pwm2b|\
 831   mmcu=at90pwm3|\
 832   mmcu=at90pwm3b: -m avr4}\
 833 %{mmcu=atmega16*|\
 834   mmcu=atmega32*|\
 835   mmcu=atmega406|\
 836   mmcu=atmega64*|\
 837   mmcu=atmega128*|\
 838   mmcu=at90can*|\
 839   mmcu=at90pwm216|\
 840   mmcu=at90pwm316|\
 841   mmcu=at90usb64*|\
 842   mmcu=at90usb128*|\
 843   mmcu=at94k: -m avr5}\
 844 %{mmcu=atmega256*:-m avr6}\
 845 %{mmcu=atmega324*|\
 846   mmcu=atmega325*|\
 847   mmcu=atmega328p|\
 848   mmcu=atmega329*|\
 849   mmcu=atmega406|\
 850   mmcu=atmega48*|\
 851   mmcu=atmega88*|\
 852   mmcu=atmega64|\
 853   mmcu=atmega644*|\
 854   mmcu=atmega645*|\
 855   mmcu=atmega649*|\
 856   mmcu=atmega128|\
 857   mmcu=atmega1284p|\
 858   mmcu=atmega162|\
 859   mmcu=atmega164*|\
 860   mmcu=atmega165*|\
 861   mmcu=atmega168*|\
 862   mmcu=atmega169*|\
 863   mmcu=atmega8hva|\
 864   mmcu=atmega16hva|\
 865   mmcu=atmega32hvb|\
 866   mmcu=attiny48|\
 867   mmcu=attiny88|\
 868   mmcu=at90can*|\
 869   mmcu=at90pwm*|\
 870   mmcu=at90usb*: -Tdata 0x800100}\
 871 %{mmcu=atmega640|\
 872   mmcu=atmega1280|\
 873   mmcu=atmega1281|\
 874   mmcu=atmega256*: -Tdata 0x800200} "
 875
 876 #define LIB_SPEC \
 877   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
 878
 879 #define LIBSTDCXX "-lgcc"
 880 /* No libstdc++ for now.  Empty string doesn't work.  */
 881
 882 #define LIBGCC_SPEC \
 883   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
 884
 885 #define STARTFILE_SPEC "%(crt_binutils)"
 886
 887 #define ENDFILE_SPEC ""
 888
 889 #define CRT_BINUTILS_SPECS "\
 890 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
 891 %{mmcu=attiny11:crttn11.o%s} \
 892 %{mmcu=attiny12:crttn12.o%s} \
 893 %{mmcu=attiny15:crttn15.o%s} \
 894 %{mmcu=attiny28:crttn28.o%s} \
 895 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
 896 %{mmcu=at90s2313:crts2313.o%s} \
 897 %{mmcu=at90s2323:crts2323.o%s} \
 898 %{mmcu=at90s2333:crts2333.o%s} \
 899 %{mmcu=at90s2343:crts2343.o%s} \
 900 %{mmcu=attiny22:crttn22.o%s} \
 901 %{mmcu=attiny26:crttn26.o%s} \
 902 %{mmcu=at90s4433:crts4433.o%s} \
 903 %{mmcu=at90s4414:crts4414.o%s} \
 904 %{mmcu=at90s4434:crts4434.o%s} \
 905 %{mmcu=at90c8534:crtc8534.o%s} \
 906 %{mmcu=at90s8535:crts8535.o%s} \
 907 %{mmcu=at86rf401:crt86401.o%s} \
 908 %{mmcu=attiny13:crttn13.o%s} \
 909 %{mmcu=attiny2313|mmcu=avr25:crttn2313.o%s} \
 910 %{mmcu=attiny24:crttn24.o%s} \
 911 %{mmcu=attiny44:crttn44.o%s} \
 912 %{mmcu=attiny84:crttn84.o%s} \
 913 %{mmcu=attiny25:crttn25.o%s} \
 914 %{mmcu=attiny45:crttn45.o%s} \
 915 %{mmcu=attiny85:crttn85.o%s} \
 916 %{mmcu=attiny261:crttn261.o%s} \
 917 %{mmcu=attiny461:crttn461.o%s} \
 918 %{mmcu=attiny861:crttn861.o%s} \
 919 %{mmcu=attiny43u:crttn43u.o%s} \
 920 %{mmcu=attiny48:crttn48.o%s} \
 921 %{mmcu=attiny88:crttn88.o%s} \
 922 %{mmcu=at43usb320|mmcu=avr3:crt43320.o%s} \
 923 %{mmcu=at43usb355:crt43355.o%s} \
 924 %{mmcu=at76c711:crt76711.o%s} \
 925 %{mmcu=atmega103|mmcu=avr31:crtm103.o%s} \
 926 %{mmcu=at90usb162|mmcu=avr35:crtusb162.o%s} \
 927 %{mmcu=at90usb82:crtusb82.o%s} \
 928 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
 929 %{mmcu=atmega48:crtm48.o%s} \
 930 %{mmcu=atmega48p:crtm48p.o%s} \
 931 %{mmcu=atmega88:crtm88.o%s} \
 932 %{mmcu=atmega88p:crtm88p.o%s} \
 933 %{mmcu=atmega8515:crtm8515.o%s} \
 934 %{mmcu=atmega8535:crtm8535.o%s} \
 935 %{mmcu=at90pwm1:crt90pwm1.o%s} \
 936 %{mmcu=at90pwm2:crt90pwm2.o%s} \
 937 %{mmcu=at90pwm2b:crt90pwm2b.o%s} \
 938 %{mmcu=at90pwm3:crt90pwm3.o%s} \
 939 %{mmcu=at90pwm3b:crt90pwm3b.o%s} \
 940 %{mmcu=atmega16:crtm16.o%s} \
 941 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
 942 %{mmcu=atmega162:crtm162.o%s} \
 943 %{mmcu=atmega163:crtm163.o%s} \
 944 %{mmcu=atmega164p:crtm164p.o%s} \
 945 %{mmcu=atmega165:crtm165.o%s} \
 946 %{mmcu=atmega165p:crtm165p.o%s} \
 947 %{mmcu=atmega168:crtm168.o%s} \
 948 %{mmcu=atmega168p:crtm168p.o%s} \
 949 %{mmcu=atmega169:crtm169.o%s} \
 950 %{mmcu=atmega169p:crtm169p.o%s} \
 951 %{mmcu=atmega32:crtm32.o%s} \
 952 %{mmcu=atmega323:crtm323.o%s} \
 953 %{mmcu=atmega324p:crtm324p.o%s} \
 954 %{mmcu=atmega325:crtm325.o%s} \
 955 %{mmcu=atmega325p:crtm325p.o%s} \
 956 %{mmcu=atmega3250:crtm3250.o%s} \
 957 %{mmcu=atmega3250p:crtm3250p.o%s} \
 958 %{mmcu=atmega328p:crtm328p.o%s} \
 959 %{mmcu=atmega329:crtm329.o%s} \
 960 %{mmcu=atmega329p:crtm329p.o%s} \
 961 %{mmcu=atmega3290:crtm3290.o%s} \
 962 %{mmcu=atmega3290p:crtm3290p.o%s} \
 963 %{mmcu=atmega32hvb:crtm32hvb.o%s} \
 964 %{mmcu=atmega406:crtm406.o%s} \
 965 %{mmcu=atmega64:crtm64.o%s} \
 966 %{mmcu=atmega640:crtm640.o%s} \
 967 %{mmcu=atmega644:crtm644.o%s} \
 968 %{mmcu=atmega644p:crtm644p.o%s} \
 969 %{mmcu=atmega645:crtm645.o%s} \
 970 %{mmcu=atmega6450:crtm6450.o%s} \
 971 %{mmcu=atmega649:crtm649.o%s} \
 972 %{mmcu=atmega6490:crtm6490.o%s} \
 973 %{mmcu=atmega8hva:crtm8hva.o%s} \
 974 %{mmcu=atmega16hva:crtm16hva.o%s} \
 975 %{mmcu=at90can32:crtcan32.o%s} \
 976 %{mmcu=at90can64:crtcan64.o%s} \
 977 %{mmcu=at90pwm216:crt90pwm216.o%s} \
 978 %{mmcu=at90pwm316:crt90pwm316.o%s} \
 979 %{mmcu=at90usb646:crtusb646.o%s} \
 980 %{mmcu=at90usb647:crtusb647.o%s} \
 981 %{mmcu=at94k:crtat94k.o%s} \
 982 %{mmcu=atmega128|mmcu=avr51:crtm128.o%s} \
 983 %{mmcu=atmega1280:crtm1280.o%s} \
 984 %{mmcu=atmega1281:crtm1281.o%s} \
 985 %{mmcu=atmega1284p:crtm1284p.o%s} \
 986 %{mmcu=atmega2560:crtm2560.o%s} \
 987 %{mmcu=atmega2561:crtm2561.o%s} \
 988 %{mmcu=at90can128:crtcan128.o%s} \
 989 %{mmcu=at90usb1286:crtusb1286.o%s} \
 990 %{mmcu=at90usb1287:crtusb1287.o%s}"
 991
 992 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
 993
 994 /* This is the default without any -mmcu=* option (AT90S*).  */
 995 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
 996
 997 /* This is undefined macro for collect2 disabling */
 998 #define LINKER_NAME "ld"
 999
1000 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
1001   TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
1002
1003 /* Note that the other files fail to use these
1004    in some of the places where they should.  */
1005
1006 #if defined(__STDC__) || defined(ALMOST_STDC)
1007 #define AS2(a,b,c) #a " " #b "," #c
1008 #define AS2C(b,c) " " #b "," #c
1009 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
1010 #define AS1(a,b) #a " " #b
1011 #else
1012 #define AS1(a,b) "a     b"
1013 #define AS2(a,b,c) "a   b,c"
1014 #define AS2C(b,c) " b,c"
1015 #define AS3(a,b,c,d) "a b,c,d"
1016 #endif
1017 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
1018 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
1019 #define CR_TAB "\n\t"
1020
1021 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
1022
1023 #define DWARF2_DEBUGGING_INFO 1
1024
1025 #define DWARF2_ADDR_SIZE 4
1026
1027 #define OBJECT_FORMAT_ELF
1028
1029 #define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \
1030   avr_hard_regno_rename_ok (OLD_REG, NEW_REG)
1031
1032 /* A C structure for machine-specific, per-function data.
1033    This is added to the cfun structure.  */
1034 struct machine_function GTY(())
1035 {
1036   /* 'true' - if the current function is a leaf function.  */
1037   int is_leaf;
1038
1039   /* 'true' - if current function is a naked function.  */
1040   int is_naked;
1041
1042   /* 'true' - if current function is an interrupt function
1043      as specified by the "interrupt" attribute.  */
1044   int is_interrupt;
1045
1046   /* 'true' - if current function is a signal function
1047      as specified by the "signal" attribute.  */
1048   int is_signal;
1049
1050   /* 'true' - if current function is a 'task' function
1051      as specified by the "OS_task" attribute.  */
1052   int is_OS_task;
1053
1054   /* 'true' - if current function is a 'main' function
1055      as specified by the "OS_main" attribute.  */
1056   int is_OS_main;
1057 };