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 GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
 498
 499 #define LEGITIMATE_CONSTANT_P(X) 1
 500
 501 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
 502                                             : (TO) == STACK_REG ? 12 \
 503                                             : 2)
 504
 505 #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 :   \
 506                                          (MODE)==HImode ? 4 :   \
 507                                          (MODE)==SImode ? 8 :   \
 508                                          (MODE)==SFmode ? 8 : 16)
 509
 510 #define BRANCH_COST(speed_p, predictable_p) 0
 511
 512 #define SLOW_BYTE_ACCESS 0
 513
 514 #define NO_FUNCTION_CSE
 515
 516 #define TEXT_SECTION_ASM_OP "\t.text"
 517
 518 #define DATA_SECTION_ASM_OP "\t.data"
 519
 520 #define BSS_SECTION_ASM_OP "\t.section .bss"
 521
 522 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
 523    There are no shared libraries on this target, and these sections are
 524    placed in the read-only program memory, so they are not writable.  */
 525
 526 #undef CTORS_SECTION_ASM_OP
 527 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"a\",@progbits"
 528
 529 #undef DTORS_SECTION_ASM_OP
 530 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits"
 531
 532 #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor
 533
 534 #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
 535
 536 #define SUPPORTS_INIT_PRIORITY 0
 537
 538 #define JUMP_TABLES_IN_TEXT_SECTION 0
 539
 540 #define ASM_COMMENT_START " ; "
 541
 542 #define ASM_APP_ON "/* #APP */\n"
 543
 544 #define ASM_APP_OFF "/* #NOAPP */\n"
 545
 546 /* Switch into a generic section.  */
 547 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
 548 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
 549
 550 #define ASM_OUTPUT_ASCII(FILE, P, SIZE)  gas_output_ascii (FILE,P,SIZE)
 551
 552 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C, STR) ((C) == '\n' || ((C) == '$'))
 553
 554 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)                     \
 555 do {                                                                       \
 556      fputs ("\t.comm ", (STREAM));                                         \
 557      assemble_name ((STREAM), (NAME));                                     \
 558      fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE));                \
 559 } while (0)
 560
 561 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED)                 \
 562   asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
 563
 564 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED)                   \
 565 do {                                                                    \
 566      fputs ("\t.lcomm ", (STREAM));                                     \
 567      assemble_name ((STREAM), (NAME));                                  \
 568      fprintf ((STREAM), ",%d\n", (int)(SIZE));                          \
 569 } while (0)
 570
 571 #undef TYPE_ASM_OP
 572 #undef SIZE_ASM_OP
 573 #undef WEAK_ASM_OP
 574 #define TYPE_ASM_OP     "\t.type\t"
 575 #define SIZE_ASM_OP     "\t.size\t"
 576 #define WEAK_ASM_OP     "\t.weak\t"
 577 /* Define the strings used for the special svr4 .type and .size directives.
 578    These strings generally do not vary from one system running svr4 to
 579    another, but if a given system (e.g. m88k running svr) needs to use
 580    different pseudo-op names for these, they may be overridden in the
 581    file which includes this one.  */
 582
 583
 584 #undef TYPE_OPERAND_FMT
 585 #define TYPE_OPERAND_FMT        "@%s"
 586 /* The following macro defines the format used to output the second
 587    operand of the .type assembler directive.  Different svr4 assemblers
 588    expect various different forms for this operand.  The one given here
 589    is just a default.  You may need to override it in your machine-
 590    specific tm.h file (depending upon the particulars of your assembler).  */
 591
 592 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 593 avr_asm_declare_function_name ((FILE), (NAME), (DECL))
 594
 595 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                    \
 596   do {                                                                  \
 597     if (!flag_inhibit_size_directive)                                   \
 598       ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                           \
 599   } while (0)
 600
 601 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 602 do {                                                                    \
 603   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");                     \
 604   size_directive_output = 0;                                            \
 605   if (!flag_inhibit_size_directive && DECL_SIZE (DECL))                 \
 606     {                                                                   \
 607       size_directive_output = 1;                                        \
 608       ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME,                            \
 609                                  int_size_in_bytes (TREE_TYPE (DECL))); \
 610     }                                                                   \
 611   ASM_OUTPUT_LABEL(FILE, NAME);                                         \
 612 } while (0)
 613
 614 #undef ASM_FINISH_DECLARE_OBJECT
 615 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 616 do {                                                                     \
 617      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 618      HOST_WIDE_INT size;                                                 \
 619      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 620          && ! AT_END && TOP_LEVEL                                        \
 621          && DECL_INITIAL (DECL) == error_mark_node                       \
 622          && !size_directive_output)                                      \
 623        {                                                                 \
 624          size_directive_output = 1;                                      \
 625          size = int_size_in_bytes (TREE_TYPE (DECL));                    \
 626          ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size);                   \
 627        }                                                                 \
 628    } while (0)
 629
 630
 631 #define ESCAPES \
 632 "\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\
 633 \0\0\"\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\
 634 \0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\\\0\0\0\
 635 \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\
 636 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
 637 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
 638 \1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\1\
 639 \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"
 640 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
 641    ASM_OUTPUT_LIMITED_STRING macros.  Each byte in the table
 642    corresponds to a particular byte value [0..255].  For any
 643    given byte value, if the value in the corresponding table
 644    position is zero, the given character can be output directly.
 645    If the table value is 1, the byte must be output as a \ooo
 646    octal escape.  If the tables value is anything else, then the
 647    byte value should be output as a \ followed by the value
 648    in the table.  Note that we can use standard UN*X escape
 649    sequences for many control characters, but we don't use
 650    \a to represent BEL because some svr4 assemblers (e.g. on
 651    the i386) don't know about that.  Also, we don't use \v
 652    since some versions of gas, such as 2.2 did not accept it.  */
 653
 654 #define STRING_LIMIT    ((unsigned) 64)
 655 #define STRING_ASM_OP   "\t.string\t"
 656 /* Some svr4 assemblers have a limit on the number of characters which
 657    can appear in the operand of a .string directive.  If your assembler
 658    has such a limitation, you should define STRING_LIMIT to reflect that
 659    limit.  Note that at least some svr4 assemblers have a limit on the
 660    actual number of bytes in the double-quoted string, and that they
 661    count each character in an escape sequence as one byte.  Thus, an
 662    escape sequence like \377 would count as four bytes.
 663
 664    If your target assembler doesn't support the .string directive, you
 665    should define this to zero.  */
 666
 667 /* Globalizing directive for a label.  */
 668 #define GLOBAL_ASM_OP ".global\t"
 669
 670 #define SET_ASM_OP      "\t.set\t"
 671
 672 #define ASM_WEAKEN_LABEL(FILE, NAME)    \
 673   do                                    \
 674     {                                   \
 675       fputs ("\t.weak\t", (FILE));      \
 676       assemble_name ((FILE), (NAME));   \
 677       fputc ('\n', (FILE));             \
 678     }                                   \
 679   while (0)
 680
 681 #define SUPPORTS_WEAK 1
 682
 683 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)        \
 684 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
 685
 686 #define HAS_INIT_SECTION 1
 687
 688 #define REGISTER_NAMES {                                \
 689   "r0","r1","r2","r3","r4","r5","r6","r7",              \
 690     "r8","r9","r10","r11","r12","r13","r14","r15",      \
 691     "r16","r17","r18","r19","r20","r21","r22","r23",    \
 692     "r24","r25","r26","r27","r28","r29","r30","r31",    \
 693     "__SP_L__","__SP_H__","argL","argH"}
 694
 695 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
 696
 697 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
 698
 699 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~' || (CODE) == '!')
 700
 701 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
 702
 703 #define USER_LABEL_PREFIX ""
 704
 705 #define ASSEMBLER_DIALECT AVR_HAVE_MOVW
 706
 707 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO)      \
 708 {                                               \
 709   gcc_assert (REGNO < 32);                      \
 710   fprintf (STREAM, "\tpush\tr%d", REGNO);       \
 711 }
 712
 713 #define ASM_OUTPUT_REG_POP(STREAM, REGNO)       \
 714 {                                               \
 715   gcc_assert (REGNO < 32);                      \
 716   fprintf (STREAM, "\tpop\tr%d", REGNO);        \
 717 }
 718
 719 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)          \
 720   avr_output_addr_vec_elt(STREAM, VALUE)
 721
 722 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
 723   (switch_to_section (progmem_section), \
 724    (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
 725
 726 #define ASM_OUTPUT_SKIP(STREAM, N)              \
 727 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
 728
 729 #define ASM_OUTPUT_ALIGN(STREAM, POWER)                 \
 730   do {                                                  \
 731       if ((POWER) > 1)                                  \
 732           fprintf (STREAM, "\t.p2align\t%d\n", POWER);  \
 733   } while (0)
 734
 735 #define CASE_VECTOR_MODE HImode
 736
 737 #define CASE_VALUES_THRESHOLD avr_case_values_threshold ()
 738
 739 #undef WORD_REGISTER_OPERATIONS
 740
 741 #define MOVE_MAX 4
 742
 743 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
 744
 745 #define Pmode HImode
 746
 747 #define FUNCTION_MODE HImode
 748
 749 #define DOLLARS_IN_IDENTIFIERS 0
 750
 751 #define NO_DOLLAR_IN_LABEL 1
 752
 753 #define TRAMPOLINE_TEMPLATE(FILE) \
 754   internal_error ("trampolines not supported")
 755
 756 #define TRAMPOLINE_SIZE 4
 757
 758 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT)                             \
 759 {                                                                             \
 760   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT);    \
 761   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
 762 }
 763 /* Store in cc_status the expressions
 764    that the condition codes will describe
 765    after execution of an instruction whose pattern is EXP.
 766    Do not alter them if the instruction would not alter the cc's.  */
 767
 768 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
 769
 770 /* The add insns don't set overflow in a usable way.  */
 771 #define CC_OVERFLOW_UNUSABLE 01000
 772 /* The mov,and,or,xor insns don't set carry.  That's ok though as the
 773    Z bit is all we need when doing unsigned comparisons on the result of
 774    these insns (since they're always with 0).  However, conditions.h has
 775    CC_NO_OVERFLOW defined for this purpose.  Rename it to something more
 776    understandable.  */
 777 #define CC_NO_CARRY CC_NO_OVERFLOW
 778
 779
 780 /* Output assembler code to FILE to increment profiler label # LABELNO
 781    for profiling a function entry.  */
 782
 783 #define FUNCTION_PROFILER(FILE, LABELNO)  \
 784   fprintf (FILE, "/* profiler %d */", (LABELNO))
 785
 786 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
 787                                           adjust_insn_length (INSN, LENGTH))
 788
 789 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
 790
 791 #define CC1_SPEC "%{profile:-p}"
 792
 793 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
 794     %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
 795     %{!fexceptions:-fno-exceptions}"
 796 /* A C string constant that tells the GCC driver program options to
 797    pass to `cc1plus'.  */
 798
 799 #define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;mmcu=avr35:-mmcu=avr3;mmcu=avr31:-mmcu=avr3;mmcu=avr51:-mmcu=avr5;\
 800 mmcu=*:-mmcu=%*}"
 801
 802 #define LINK_SPEC "\
 803 %{mrelax:--relax\
 804          %{mpmem-wrap-around:%{mmcu=at90usb8*:--pmem-wrap-around=8k}\
 805                              %{mmcu=atmega16*:--pmem-wrap-around=16k}\
 806                              %{mmcu=atmega32*|\
 807                                mmcu=at90can32*:--pmem-wrap-around=32k}\
 808                              %{mmcu=atmega64*|\
 809                                mmcu=at90can64*|\
 810                                mmcu=at90usb64*:--pmem-wrap-around=64k}}}\
 811 %{!mmcu*: -m avr2}\
 812 %{mmcu=at90s1200|\
 813   mmcu=attiny11|\
 814   mmcu=attiny12|\
 815   mmcu=attiny15|\
 816   mmcu=attiny28: -m avr1}\
 817 %{mmcu=attiny22|\
 818   mmcu=attiny26|\
 819   mmcu=at90s2*|\
 820   mmcu=at90s4*|\
 821   mmcu=at90s8*|\
 822   mmcu=at90c8*|\
 823   mmcu=at86rf401|\
 824   mmcu=ata6289|\
 825   mmcu=attiny13*|\
 826   mmcu=attiny2313|\
 827   mmcu=attiny24|\
 828   mmcu=attiny25|\
 829   mmcu=attiny261|\
 830   mmcu=attiny4*|\
 831   mmcu=attiny8*: -m avr2}\
 832 %{mmcu=atmega103|\
 833   mmcu=at43*|\
 834   mmcu=at76*|\
 835   mmcu=at90usb82|\
 836   mmcu=at90usb162|\
 837   mmcu=attiny16*|\
 838   mmcu=attiny32*: -m avr3}\
 839 %{mmcu=atmega8*|\
 840   mmcu=atmega4*|\
 841   mmcu=at90pwm1|\
 842   mmcu=at90pwm2|\
 843   mmcu=at90pwm2b|\
 844   mmcu=at90pwm3|\
 845   mmcu=at90pwm3b|\
 846   mmcu=at90pwm81: -m avr4}\
 847 %{mmcu=atmega16*|\
 848   mmcu=atmega32*|\
 849   mmcu=atmega406|\
 850   mmcu=atmega64*|\
 851   mmcu=atmega128*|\
 852   mmcu=at90can*|\
 853   mmcu=at90pwm216|\
 854   mmcu=at90pwm316|\
 855   mmcu=at90scr100|\
 856   mmcu=at90usb64*|\
 857   mmcu=at90usb128*|\
 858   mmcu=at94k|\
 859   mmcu=m3000*|\
 860   mmcu=m3001*: -m avr5}\
 861 %{mmcu=atmega256*:-m avr6}\
 862 %{mmcu=atmega324*|\
 863   mmcu=atmega325*|\
 864   mmcu=atmega328p|\
 865   mmcu=atmega329*|\
 866   mmcu=atmega406|\
 867   mmcu=atmega48*|\
 868   mmcu=atmega88*|\
 869   mmcu=atmega64|\
 870   mmcu=atmega644*|\
 871   mmcu=atmega645*|\
 872   mmcu=atmega649*|\
 873   mmcu=atmega128|\
 874   mmcu=atmega1284p|\
 875   mmcu=atmega162|\
 876   mmcu=atmega164*|\
 877   mmcu=atmega165*|\
 878   mmcu=atmega168*|\
 879   mmcu=atmega169*|\
 880   mmcu=atmega4hv*|\
 881   mmcu=atmega8hv*|\
 882   mmcu=atmega16hv*|\
 883   mmcu=atmega32hv*|\
 884   mmcu=attiny48|\
 885   mmcu=attiny88|\
 886   mmcu=attiny87|\
 887   mmcu=attiny167|\
 888   mmcu=attiny327|\
 889   mmcu=at90can*|\
 890   mmcu=at90pwm*|\
 891   mmcu=atmega8c1|\
 892   mmcu=atmega16c1|\
 893   mmcu=atmega32c1|\
 894   mmcu=atmega64c1|\
 895   mmcu=atmega8m1|\
 896   mmcu=atmega16m1|\
 897   mmcu=atmega32m1|\
 898   mmcu=atmega64m1|\
 899   mmcu=atmega16u4|\
 900   mmcu=atmega32u*|\
 901   mmcu=at90scr100|\
 902   mmcu=ata6289|\
 903   mmcu=at90usb*: -Tdata 0x800100}\
 904 %{mmcu=atmega640|\
 905   mmcu=atmega1280|\
 906   mmcu=atmega1281|\
 907   mmcu=atmega256*|\
 908   mmcu=atmega128rfa1: -Tdata 0x800200}\
 909 %{mmcu=m3000*|\
 910   mmcu=m3001*: -Tdata 0x801000}"
 911
 912 #define LIB_SPEC \
 913   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
 914
 915 #define LIBSTDCXX "-lgcc"
 916 /* No libstdc++ for now.  Empty string doesn't work.  */
 917
 918 #define LIBGCC_SPEC \
 919   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
 920
 921 #define STARTFILE_SPEC "%(crt_binutils)"
 922
 923 #define ENDFILE_SPEC ""
 924
 925 #define CRT_BINUTILS_SPECS "\
 926 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
 927 %{mmcu=attiny11:crttn11.o%s} \
 928 %{mmcu=attiny12:crttn12.o%s} \
 929 %{mmcu=attiny15:crttn15.o%s} \
 930 %{mmcu=attiny28:crttn28.o%s} \
 931 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
 932 %{mmcu=at90s2313:crts2313.o%s} \
 933 %{mmcu=at90s2323:crts2323.o%s} \
 934 %{mmcu=at90s2333:crts2333.o%s} \
 935 %{mmcu=at90s2343:crts2343.o%s} \
 936 %{mmcu=attiny22:crttn22.o%s} \
 937 %{mmcu=attiny26:crttn26.o%s} \
 938 %{mmcu=at90s4433:crts4433.o%s} \
 939 %{mmcu=at90s4414:crts4414.o%s} \
 940 %{mmcu=at90s4434:crts4434.o%s} \
 941 %{mmcu=at90c8534:crtc8534.o%s} \
 942 %{mmcu=at90s8535:crts8535.o%s} \
 943 %{mmcu=at86rf401:crt86401.o%s} \
 944 %{mmcu=attiny13:crttn13.o%s} \
 945 %{mmcu=attiny13a:crttn13a.o%s} \
 946 %{mmcu=attiny2313|mmcu=avr25:crttn2313.o%s} \
 947 %{mmcu=attiny24:crttn24.o%s} \
 948 %{mmcu=attiny44:crttn44.o%s} \
 949 %{mmcu=attiny84:crttn84.o%s} \
 950 %{mmcu=attiny25:crttn25.o%s} \
 951 %{mmcu=attiny45:crttn45.o%s} \
 952 %{mmcu=attiny85:crttn85.o%s} \
 953 %{mmcu=attiny261:crttn261.o%s} \
 954 %{mmcu=attiny461:crttn461.o%s} \
 955 %{mmcu=attiny861:crttn861.o%s} \
 956 %{mmcu=attiny43u:crttn43u.o%s} \
 957 %{mmcu=attiny87:crttn87.o%s} \
 958 %{mmcu=attiny48:crttn48.o%s} \
 959 %{mmcu=attiny88:crttn88.o%s} \
 960 %{mmcu=ata6289:crta6289.o%s} \
 961 %{mmcu=at43usb355|mmcu=avr3:crt43355.o%s} \
 962 %{mmcu=at76c711:crt76711.o%s} \
 963 %{mmcu=atmega103|mmcu=avr31:crtm103.o%s} \
 964 %{mmcu=at43usb320:crt43320.o%s} \
 965 %{mmcu=at90usb162|mmcu=avr35:crtusb162.o%s} \
 966 %{mmcu=at90usb82:crtusb82.o%s} \
 967 %{mmcu=attiny167:crttn167.o%s} \
 968 %{mmcu=attiny327:crttn327.o%s} \
 969 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
 970 %{mmcu=atmega48:crtm48.o%s} \
 971 %{mmcu=atmega48p:crtm48p.o%s} \
 972 %{mmcu=atmega88:crtm88.o%s} \
 973 %{mmcu=atmega88p:crtm88p.o%s} \
 974 %{mmcu=atmega8515:crtm8515.o%s} \
 975 %{mmcu=atmega8535:crtm8535.o%s} \
 976 %{mmcu=atmega8c1:crtm8c1.o%s} \
 977 %{mmcu=atmega8m1:crtm8m1.o%s} \
 978 %{mmcu=at90pwm1:crt90pwm1.o%s} \
 979 %{mmcu=at90pwm2:crt90pwm2.o%s} \
 980 %{mmcu=at90pwm2b:crt90pwm2b.o%s} \
 981 %{mmcu=at90pwm3:crt90pwm3.o%s} \
 982 %{mmcu=at90pwm3b:crt90pwm3b.o%s} \
 983 %{mmcu=at90pwm81:crt90pwm81.o%s} \
 984 %{mmcu=atmega16:crtm16.o%s} \
 985 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
 986 %{mmcu=atmega162:crtm162.o%s} \
 987 %{mmcu=atmega163:crtm163.o%s} \
 988 %{mmcu=atmega164p:crtm164p.o%s} \
 989 %{mmcu=atmega165:crtm165.o%s} \
 990 %{mmcu=atmega165p:crtm165p.o%s} \
 991 %{mmcu=atmega168:crtm168.o%s} \
 992 %{mmcu=atmega168p:crtm168p.o%s} \
 993 %{mmcu=atmega169:crtm169.o%s} \
 994 %{mmcu=atmega169p:crtm169p.o%s} \
 995 %{mmcu=atmega32:crtm32.o%s} \
 996 %{mmcu=atmega323:crtm323.o%s} \
 997 %{mmcu=atmega324p:crtm324p.o%s} \
 998 %{mmcu=atmega325:crtm325.o%s} \
 999 %{mmcu=atmega325p:crtm325p.o%s} \
1000 %{mmcu=atmega3250:crtm3250.o%s} \
1001 %{mmcu=atmega3250p:crtm3250p.o%s} \
1002 %{mmcu=atmega328p:crtm328p.o%s} \
1003 %{mmcu=atmega329:crtm329.o%s} \
1004 %{mmcu=atmega329p:crtm329p.o%s} \
1005 %{mmcu=atmega3290:crtm3290.o%s} \
1006 %{mmcu=atmega3290p:crtm3290p.o%s} \
1007 %{mmcu=atmega406:crtm406.o%s} \
1008 %{mmcu=atmega64:crtm64.o%s} \
1009 %{mmcu=atmega640:crtm640.o%s} \
1010 %{mmcu=atmega644:crtm644.o%s} \
1011 %{mmcu=atmega644p:crtm644p.o%s} \
1012 %{mmcu=atmega645:crtm645.o%s} \
1013 %{mmcu=atmega6450:crtm6450.o%s} \
1014 %{mmcu=atmega649:crtm649.o%s} \
1015 %{mmcu=atmega6490:crtm6490.o%s} \
1016 %{mmcu=atmega8hva:crtm8hva.o%s} \
1017 %{mmcu=atmega16hva:crtm16hva.o%s} \
1018 %{mmcu=atmega16hvb:crtm16hvb.o%s} \
1019 %{mmcu=atmega32hvb:crtm32hvb.o%s} \
1020 %{mmcu=atmega4hvd:crtm4hvd.o%s} \
1021 %{mmcu=atmega8hvd:crtm8hvd.o%s} \
1022 %{mmcu=at90can32:crtcan32.o%s} \
1023 %{mmcu=at90can64:crtcan64.o%s} \
1024 %{mmcu=at90pwm216:crt90pwm216.o%s} \
1025 %{mmcu=at90pwm316:crt90pwm316.o%s} \
1026 %{mmcu=atmega16c1:crtm16c1.o%s} \
1027 %{mmcu=atmega32c1:crtm32c1.o%s} \
1028 %{mmcu=atmega64c1:crtm64c1.o%s} \
1029 %{mmcu=atmega16m1:crtm16m1.o%s} \
1030 %{mmcu=atmega32m1:crtm32m1.o%s} \
1031 %{mmcu=atmega64m1:crtm64m1.o%s} \
1032 %{mmcu=atmega16u4:crtm16u4.o%s} \
1033 %{mmcu=atmega32u4:crtm32u4.o%s} \
1034 %{mmcu=atmega32u6:crtm32u6.o%s} \
1035 %{mmcu=at90scr100:crt90scr100.o%s} \
1036 %{mmcu=at90usb646:crtusb646.o%s} \
1037 %{mmcu=at90usb647:crtusb647.o%s} \
1038 %{mmcu=at94k:crtat94k.o%s} \
1039 %{mmcu=atmega128|mmcu=avr51:crtm128.o%s} \
1040 %{mmcu=atmega1280:crtm1280.o%s} \
1041 %{mmcu=atmega1281:crtm1281.o%s} \
1042 %{mmcu=atmega1284p:crtm1284p.o%s} \
1043 %{mmcu=at90can128:crtcan128.o%s} \
1044 %{mmcu=atmega128rfa1:crtm128rfa1.o%s} \
1045 %{mmcu=at90usb1286:crtusb1286.o%s} \
1046 %{mmcu=at90usb1287:crtusb1287.o%s} \
1047 %{mmcu=m3000f:crtm3000f.o%s} \
1048 %{mmcu=m3000s:crtm3000s.o%s} \
1049 %{mmcu=m3001b:crtm3001b.o%s} \
1050 %{mmcu=atmega2560|mmcu=avr6:crtm2560.o%s} \
1051 %{mmcu=atmega2561:crtm2561.o%s}"
1052
1053 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
1054
1055 /* This is the default without any -mmcu=* option (AT90S*).  */
1056 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
1057
1058 /* This is undefined macro for collect2 disabling */
1059 #define LINKER_NAME "ld"
1060
1061 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
1062   TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
1063
1064 /* Note that the other files fail to use these
1065    in some of the places where they should.  */
1066
1067 #if defined(__STDC__) || defined(ALMOST_STDC)
1068 #define AS2(a,b,c) #a " " #b "," #c
1069 #define AS2C(b,c) " " #b "," #c
1070 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
1071 #define AS1(a,b) #a " " #b
1072 #else
1073 #define AS1(a,b) "a     b"
1074 #define AS2(a,b,c) "a   b,c"
1075 #define AS2C(b,c) " b,c"
1076 #define AS3(a,b,c,d) "a b,c,d"
1077 #endif
1078 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
1079 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
1080 #define CR_TAB "\n\t"
1081
1082 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
1083
1084 #define DWARF2_DEBUGGING_INFO 1
1085
1086 #define DWARF2_ADDR_SIZE 4
1087
1088 #define OBJECT_FORMAT_ELF
1089
1090 #define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \
1091   avr_hard_regno_rename_ok (OLD_REG, NEW_REG)
1092
1093 /* A C structure for machine-specific, per-function data.
1094    This is added to the cfun structure.  */
1095 struct machine_function GTY(())
1096 {
1097   /* 'true' - if the current function is a leaf function.  */
1098   int is_leaf;
1099
1100   /* 'true' - if current function is a naked function.  */
1101   int is_naked;
1102
1103   /* 'true' - if current function is an interrupt function
1104      as specified by the "interrupt" attribute.  */
1105   int is_interrupt;
1106
1107   /* 'true' - if current function is a signal function
1108      as specified by the "signal" attribute.  */
1109   int is_signal;
1110
1111   /* 'true' - if current function is a 'task' function
1112      as specified by the "OS_task" attribute.  */
1113   int is_OS_task;
1114
1115   /* 'true' - if current function is a 'main' function
1116      as specified by the "OS_main" attribute.  */
1117   int is_OS_main;
1118 };