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 avr_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) avr_can_eliminate (FROM, TO)
 364
 365 #define INITIAL_ELIMINATION_OFFSET(FROM, TO, OFFSET)                    \
 366   OFFSET = avr_initial_elimination_offset (FROM, TO)
 367
 368 #define RETURN_ADDR_RTX(count, x) \
 369   gen_rtx_MEM (Pmode, memory_address (Pmode, plus_constant (tem, 1)))
 370
 371 /* Don't use Push rounding. expr.c: emit_single_push_insn is broken
 372    for POST_DEC targets (PR27386).  */
 373 /*#define PUSH_ROUNDING(NPUSHED) (NPUSHED)*/
 374
 375 #define RETURN_POPS_ARGS(FUNDECL, FUNTYPE, STACK_SIZE) 0
 376
 377 #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) (function_arg (&(CUM), MODE, TYPE, NAMED))
 378
 379 typedef struct avr_args {
 380   int nregs;                    /* # registers available for passing */
 381   int regno;                    /* next available register number */
 382 } CUMULATIVE_ARGS;
 383
 384 #define INIT_CUMULATIVE_ARGS(CUM, FNTYPE, LIBNAME, FNDECL, N_NAMED_ARGS) \
 385   init_cumulative_args (&(CUM), FNTYPE, LIBNAME, FNDECL)
 386
 387 #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)    \
 388   (function_arg_advance (&CUM, MODE, TYPE, NAMED))
 389
 390 #define FUNCTION_ARG_REGNO_P(r) function_arg_regno_p(r)
 391
 392 extern int avr_reg_order[];
 393
 394 #define RET_REGISTER avr_ret_register ()
 395
 396 #define LIBCALL_VALUE(MODE)  avr_libcall_value (MODE)
 397
 398 #define FUNCTION_VALUE_REGNO_P(N) ((int) (N) == RET_REGISTER)
 399
 400 #define DEFAULT_PCC_STRUCT_RETURN 0
 401
 402 #define EPILOGUE_USES(REGNO) avr_epilogue_uses(REGNO)
 403
 404 #define HAVE_POST_INCREMENT 1
 405 #define HAVE_PRE_DECREMENT 1
 406
 407 #define CONSTANT_ADDRESS_P(X) CONSTANT_P (X)
 408
 409 #define MAX_REGS_PER_ADDRESS 1
 410
 411 #ifdef REG_OK_STRICT
 412 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 413 {                                                       \
 414   if (legitimate_address_p (mode, operand, 1))          \
 415     goto ADDR;                                          \
 416 }
 417 #  else
 418 #  define GO_IF_LEGITIMATE_ADDRESS(mode, operand, ADDR) \
 419 {                                                       \
 420   if (legitimate_address_p (mode, operand, 0))          \
 421     goto ADDR;                                          \
 422 }
 423 #endif
 424
 425 #define REG_OK_FOR_BASE_NOSTRICT_P(X) \
 426   (REGNO (X) >= FIRST_PSEUDO_REGISTER || REG_OK_FOR_BASE_STRICT_P(X))
 427
 428 #define REG_OK_FOR_BASE_STRICT_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
 429
 430 #ifdef REG_OK_STRICT
 431 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_STRICT_P (X)
 432 #else
 433 #  define REG_OK_FOR_BASE_P(X) REG_OK_FOR_BASE_NOSTRICT_P (X)
 434 #endif
 435
 436 #define REG_OK_FOR_INDEX_P(X) 0
 437
 438 #define XEXP_(X,Y) (X)
 439
 440 /* LEGITIMIZE_RELOAD_ADDRESS will allow register R26/27 to be used, where it
 441    is no worse than normal base pointers R28/29 and R30/31. For example:
 442    If base offset is greater than 63 bytes or for R++ or --R addressing.  */
 443
 444 #define LEGITIMIZE_RELOAD_ADDRESS(X, MODE, OPNUM, TYPE, IND_LEVELS, WIN)    \
 445 do {                                                                        \
 446   if (1&&(GET_CODE (X) == POST_INC || GET_CODE (X) == PRE_DEC))     \
 447     {                                                                       \
 448       push_reload (XEXP (X,0), XEXP (X,0), &XEXP (X,0), &XEXP (X,0),        \
 449                    POINTER_REGS, GET_MODE (X),GET_MODE (X) , 0, 0,          \
 450                    OPNUM, RELOAD_OTHER);                                    \
 451       goto WIN;                                                             \
 452     }                                                                       \
 453   if (GET_CODE (X) == PLUS                                                  \
 454       && REG_P (XEXP (X, 0))                                                \
 455       && reg_equiv_constant[REGNO (XEXP (X, 0))] == 0                       \
 456       && GET_CODE (XEXP (X, 1)) == CONST_INT                                \
 457       && INTVAL (XEXP (X, 1)) >= 1)                                         \
 458     {                                                                       \
 459       int fit = INTVAL (XEXP (X, 1)) <= (64 - GET_MODE_SIZE (MODE));        \
 460       if (fit)                                                              \
 461         {                                                                   \
 462           if (reg_equiv_address[REGNO (XEXP (X, 0))] != 0)                  \
 463             {                                                               \
 464               int regno = REGNO (XEXP (X, 0));                              \
 465               rtx mem = make_memloc (X, regno);                             \
 466               push_reload (XEXP (mem,0), NULL, &XEXP (mem,0), NULL,         \
 467                            POINTER_REGS, Pmode, VOIDmode, 0, 0,             \
 468                            1, ADDR_TYPE (TYPE));                            \
 469               push_reload (mem, NULL_RTX, &XEXP (X, 0), NULL,               \
 470                            BASE_POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0, \
 471                            OPNUM, TYPE);                                    \
 472               goto WIN;                                                     \
 473             }                                                               \
 474         }                                                                   \
 475       else if (! (frame_pointer_needed && XEXP (X,0) == frame_pointer_rtx)) \
 476         {                                                                   \
 477           push_reload (X, NULL_RTX, &X, NULL,                               \
 478                        POINTER_REGS, GET_MODE (X), VOIDmode, 0, 0,          \
 479                        OPNUM, TYPE);                                        \
 480           goto WIN;                                                         \
 481         }                                                                   \
 482     }                                                                       \
 483 } while(0)
 484
 485 #define LEGITIMATE_CONSTANT_P(X) 1
 486
 487 #define REGISTER_MOVE_COST(MODE, FROM, TO) ((FROM) == STACK_REG ? 6 \
 488                                             : (TO) == STACK_REG ? 12 \
 489                                             : 2)
 490
 491 #define MEMORY_MOVE_COST(MODE,CLASS,IN) ((MODE)==QImode ? 2 :   \
 492                                          (MODE)==HImode ? 4 :   \
 493                                          (MODE)==SImode ? 8 :   \
 494                                          (MODE)==SFmode ? 8 : 16)
 495
 496 #define BRANCH_COST(speed_p, predictable_p) 0
 497
 498 #define SLOW_BYTE_ACCESS 0
 499
 500 #define NO_FUNCTION_CSE
 501
 502 #define TEXT_SECTION_ASM_OP "\t.text"
 503
 504 #define DATA_SECTION_ASM_OP "\t.data"
 505
 506 #define BSS_SECTION_ASM_OP "\t.section .bss"
 507
 508 /* Define the pseudo-ops used to switch to the .ctors and .dtors sections.
 509    There are no shared libraries on this target, and these sections are
 510    placed in the read-only program memory, so they are not writable.  */
 511
 512 #undef CTORS_SECTION_ASM_OP
 513 #define CTORS_SECTION_ASM_OP "\t.section .ctors,\"a\",@progbits"
 514
 515 #undef DTORS_SECTION_ASM_OP
 516 #define DTORS_SECTION_ASM_OP "\t.section .dtors,\"a\",@progbits"
 517
 518 #define TARGET_ASM_CONSTRUCTOR avr_asm_out_ctor
 519
 520 #define TARGET_ASM_DESTRUCTOR avr_asm_out_dtor
 521
 522 #define SUPPORTS_INIT_PRIORITY 0
 523
 524 #define JUMP_TABLES_IN_TEXT_SECTION 0
 525
 526 #define ASM_COMMENT_START " ; "
 527
 528 #define ASM_APP_ON "/* #APP */\n"
 529
 530 #define ASM_APP_OFF "/* #NOAPP */\n"
 531
 532 /* Switch into a generic section.  */
 533 #define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
 534 #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
 535
 536 #define ASM_OUTPUT_ASCII(FILE, P, SIZE)  gas_output_ascii (FILE,P,SIZE)
 537
 538 #define IS_ASM_LOGICAL_LINE_SEPARATOR(C, STR) ((C) == '\n' || ((C) == '$'))
 539
 540 #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED)                     \
 541 do {                                                                       \
 542      fputs ("\t.comm ", (STREAM));                                         \
 543      assemble_name ((STREAM), (NAME));                                     \
 544      fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE));                \
 545 } while (0)
 546
 547 #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED)                 \
 548   asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
 549
 550 #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED)                   \
 551 do {                                                                    \
 552      fputs ("\t.lcomm ", (STREAM));                                     \
 553      assemble_name ((STREAM), (NAME));                                  \
 554      fprintf ((STREAM), ",%d\n", (int)(SIZE));                          \
 555 } while (0)
 556
 557 #undef TYPE_ASM_OP
 558 #undef SIZE_ASM_OP
 559 #undef WEAK_ASM_OP
 560 #define TYPE_ASM_OP     "\t.type\t"
 561 #define SIZE_ASM_OP     "\t.size\t"
 562 #define WEAK_ASM_OP     "\t.weak\t"
 563 /* Define the strings used for the special svr4 .type and .size directives.
 564    These strings generally do not vary from one system running svr4 to
 565    another, but if a given system (e.g. m88k running svr) needs to use
 566    different pseudo-op names for these, they may be overridden in the
 567    file which includes this one.  */
 568
 569
 570 #undef TYPE_OPERAND_FMT
 571 #define TYPE_OPERAND_FMT        "@%s"
 572 /* The following macro defines the format used to output the second
 573    operand of the .type assembler directive.  Different svr4 assemblers
 574    expect various different forms for this operand.  The one given here
 575    is just a default.  You may need to override it in your machine-
 576    specific tm.h file (depending upon the particulars of your assembler).  */
 577
 578 #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)             \
 579 avr_asm_declare_function_name ((FILE), (NAME), (DECL))
 580
 581 #define ASM_DECLARE_FUNCTION_SIZE(FILE, FNAME, DECL)                    \
 582   do {                                                                  \
 583     if (!flag_inhibit_size_directive)                                   \
 584       ASM_OUTPUT_MEASURED_SIZE (FILE, FNAME);                           \
 585   } while (0)
 586
 587 #define ASM_DECLARE_OBJECT_NAME(FILE, NAME, DECL)                       \
 588 do {                                                                    \
 589   ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "object");                     \
 590   size_directive_output = 0;                                            \
 591   if (!flag_inhibit_size_directive && DECL_SIZE (DECL))                 \
 592     {                                                                   \
 593       size_directive_output = 1;                                        \
 594       ASM_OUTPUT_SIZE_DIRECTIVE (FILE, NAME,                            \
 595                                  int_size_in_bytes (TREE_TYPE (DECL))); \
 596     }                                                                   \
 597   ASM_OUTPUT_LABEL(FILE, NAME);                                         \
 598 } while (0)
 599
 600 #undef ASM_FINISH_DECLARE_OBJECT
 601 #define ASM_FINISH_DECLARE_OBJECT(FILE, DECL, TOP_LEVEL, AT_END)         \
 602 do {                                                                     \
 603      const char *name = XSTR (XEXP (DECL_RTL (DECL), 0), 0);             \
 604      HOST_WIDE_INT size;                                                 \
 605      if (!flag_inhibit_size_directive && DECL_SIZE (DECL)                \
 606          && ! AT_END && TOP_LEVEL                                        \
 607          && DECL_INITIAL (DECL) == error_mark_node                       \
 608          && !size_directive_output)                                      \
 609        {                                                                 \
 610          size_directive_output = 1;                                      \
 611          size = int_size_in_bytes (TREE_TYPE (DECL));                    \
 612          ASM_OUTPUT_SIZE_DIRECTIVE (FILE, name, size);                   \
 613        }                                                                 \
 614    } while (0)
 615
 616
 617 #define ESCAPES \
 618 "\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\
 619 \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\
 620 \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\
 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\1\
 622 \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\
 623 \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\
 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 /* A table of bytes codes used by the ASM_OUTPUT_ASCII and
 627    ASM_OUTPUT_LIMITED_STRING macros.  Each byte in the table
 628    corresponds to a particular byte value [0..255].  For any
 629    given byte value, if the value in the corresponding table
 630    position is zero, the given character can be output directly.
 631    If the table value is 1, the byte must be output as a \ooo
 632    octal escape.  If the tables value is anything else, then the
 633    byte value should be output as a \ followed by the value
 634    in the table.  Note that we can use standard UN*X escape
 635    sequences for many control characters, but we don't use
 636    \a to represent BEL because some svr4 assemblers (e.g. on
 637    the i386) don't know about that.  Also, we don't use \v
 638    since some versions of gas, such as 2.2 did not accept it.  */
 639
 640 #define STRING_LIMIT    ((unsigned) 64)
 641 #define STRING_ASM_OP   "\t.string\t"
 642 /* Some svr4 assemblers have a limit on the number of characters which
 643    can appear in the operand of a .string directive.  If your assembler
 644    has such a limitation, you should define STRING_LIMIT to reflect that
 645    limit.  Note that at least some svr4 assemblers have a limit on the
 646    actual number of bytes in the double-quoted string, and that they
 647    count each character in an escape sequence as one byte.  Thus, an
 648    escape sequence like \377 would count as four bytes.
 649
 650    If your target assembler doesn't support the .string directive, you
 651    should define this to zero.  */
 652
 653 /* Globalizing directive for a label.  */
 654 #define GLOBAL_ASM_OP ".global\t"
 655
 656 #define SET_ASM_OP      "\t.set\t"
 657
 658 #define ASM_WEAKEN_LABEL(FILE, NAME)    \
 659   do                                    \
 660     {                                   \
 661       fputs ("\t.weak\t", (FILE));      \
 662       assemble_name ((FILE), (NAME));   \
 663       fputc ('\n', (FILE));             \
 664     }                                   \
 665   while (0)
 666
 667 #define SUPPORTS_WEAK 1
 668
 669 #define ASM_GENERATE_INTERNAL_LABEL(STRING, PREFIX, NUM)        \
 670 sprintf (STRING, "*.%s%lu", PREFIX, (unsigned long)(NUM))
 671
 672 #define HAS_INIT_SECTION 1
 673
 674 #define REGISTER_NAMES {                                \
 675   "r0","r1","r2","r3","r4","r5","r6","r7",              \
 676     "r8","r9","r10","r11","r12","r13","r14","r15",      \
 677     "r16","r17","r18","r19","r20","r21","r22","r23",    \
 678     "r24","r25","r26","r27","r28","r29","r30","r31",    \
 679     "__SP_L__","__SP_H__","argL","argH"}
 680
 681 #define FINAL_PRESCAN_INSN(insn, operand, nop) final_prescan_insn (insn, operand,nop)
 682
 683 #define PRINT_OPERAND(STREAM, X, CODE) print_operand (STREAM, X, CODE)
 684
 685 #define PRINT_OPERAND_PUNCT_VALID_P(CODE) ((CODE) == '~' || (CODE) == '!')
 686
 687 #define PRINT_OPERAND_ADDRESS(STREAM, X) print_operand_address(STREAM, X)
 688
 689 #define USER_LABEL_PREFIX ""
 690
 691 #define ASSEMBLER_DIALECT AVR_HAVE_MOVW
 692
 693 #define ASM_OUTPUT_REG_PUSH(STREAM, REGNO)      \
 694 {                                               \
 695   gcc_assert (REGNO < 32);                      \
 696   fprintf (STREAM, "\tpush\tr%d", REGNO);       \
 697 }
 698
 699 #define ASM_OUTPUT_REG_POP(STREAM, REGNO)       \
 700 {                                               \
 701   gcc_assert (REGNO < 32);                      \
 702   fprintf (STREAM, "\tpop\tr%d", REGNO);        \
 703 }
 704
 705 #define ASM_OUTPUT_ADDR_VEC_ELT(STREAM, VALUE)          \
 706   avr_output_addr_vec_elt(STREAM, VALUE)
 707
 708 #define ASM_OUTPUT_CASE_LABEL(STREAM, PREFIX, NUM, TABLE) \
 709   (switch_to_section (progmem_section), \
 710    (*targetm.asm_out.internal_label) (STREAM, PREFIX, NUM))
 711
 712 #define ASM_OUTPUT_SKIP(STREAM, N)              \
 713 fprintf (STREAM, "\t.skip %lu,0\n", (unsigned long)(N))
 714
 715 #define ASM_OUTPUT_ALIGN(STREAM, POWER)                 \
 716   do {                                                  \
 717       if ((POWER) > 1)                                  \
 718           fprintf (STREAM, "\t.p2align\t%d\n", POWER);  \
 719   } while (0)
 720
 721 #define CASE_VECTOR_MODE HImode
 722
 723 #undef WORD_REGISTER_OPERATIONS
 724
 725 #define MOVE_MAX 4
 726
 727 #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
 728
 729 #define Pmode HImode
 730
 731 #define FUNCTION_MODE HImode
 732
 733 #define DOLLARS_IN_IDENTIFIERS 0
 734
 735 #define NO_DOLLAR_IN_LABEL 1
 736
 737 #define TRAMPOLINE_TEMPLATE(FILE) \
 738   internal_error ("trampolines not supported")
 739
 740 #define TRAMPOLINE_SIZE 4
 741
 742 #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT)                             \
 743 {                                                                             \
 744   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 2)), CXT);    \
 745   emit_move_insn (gen_rtx_MEM (HImode, plus_constant ((TRAMP), 6)), FNADDR); \
 746 }
 747 /* Store in cc_status the expressions
 748    that the condition codes will describe
 749    after execution of an instruction whose pattern is EXP.
 750    Do not alter them if the instruction would not alter the cc's.  */
 751
 752 #define NOTICE_UPDATE_CC(EXP, INSN) notice_update_cc(EXP, INSN)
 753
 754 /* The add insns don't set overflow in a usable way.  */
 755 #define CC_OVERFLOW_UNUSABLE 01000
 756 /* The mov,and,or,xor insns don't set carry.  That's ok though as the
 757    Z bit is all we need when doing unsigned comparisons on the result of
 758    these insns (since they're always with 0).  However, conditions.h has
 759    CC_NO_OVERFLOW defined for this purpose.  Rename it to something more
 760    understandable.  */
 761 #define CC_NO_CARRY CC_NO_OVERFLOW
 762
 763
 764 /* Output assembler code to FILE to increment profiler label # LABELNO
 765    for profiling a function entry.  */
 766
 767 #define FUNCTION_PROFILER(FILE, LABELNO)  \
 768   fprintf (FILE, "/* profiler %d */", (LABELNO))
 769
 770 #define ADJUST_INSN_LENGTH(INSN, LENGTH) (LENGTH =\
 771                                           adjust_insn_length (INSN, LENGTH))
 772
 773 #define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"
 774
 775 #define CC1_SPEC "%{profile:-p}"
 776
 777 #define CC1PLUS_SPEC "%{!frtti:-fno-rtti} \
 778     %{!fenforce-eh-specs:-fno-enforce-eh-specs} \
 779     %{!fexceptions:-fno-exceptions}"
 780 /* A C string constant that tells the GCC driver program options to
 781    pass to `cc1plus'.  */
 782
 783 #define ASM_SPEC "%{mmcu=avr25:-mmcu=avr2;mmcu=avr35:-mmcu=avr3;mmcu=avr31:-mmcu=avr3;mmcu=avr51:-mmcu=avr5;\
 784 mmcu=*:-mmcu=%*}"
 785
 786 #define LINK_SPEC "\
 787 %{mrelax:--relax\
 788          %{mpmem-wrap-around:%{mmcu=at90usb8*:--pmem-wrap-around=8k}\
 789                              %{mmcu=atmega16*:--pmem-wrap-around=16k}\
 790                              %{mmcu=atmega32*|\
 791                                mmcu=at90can32*:--pmem-wrap-around=32k}\
 792                              %{mmcu=atmega64*|\
 793                                mmcu=at90can64*|\
 794                                mmcu=at90usb64*:--pmem-wrap-around=64k}}}\
 795 %{!mmcu*: -m avr2}\
 796 %{mmcu=at90s1200|\
 797   mmcu=attiny11|\
 798   mmcu=attiny12|\
 799   mmcu=attiny15|\
 800   mmcu=attiny28: -m avr1}\
 801 %{mmcu=attiny22|\
 802   mmcu=attiny26|\
 803   mmcu=at90s2*|\
 804   mmcu=at90s4*|\
 805   mmcu=at90s8*|\
 806   mmcu=at90c8*|\
 807   mmcu=at86rf401|\
 808   mmcu=ata6289|\
 809   mmcu=attiny13*|\
 810   mmcu=attiny2313|\
 811   mmcu=attiny24|\
 812   mmcu=attiny25|\
 813   mmcu=attiny261|\
 814   mmcu=attiny4*|\
 815   mmcu=attiny8*: -m avr2}\
 816 %{mmcu=atmega103|\
 817   mmcu=at43*|\
 818   mmcu=at76*|\
 819   mmcu=at90usb82|\
 820   mmcu=at90usb162|\
 821   mmcu=attiny16*|\
 822   mmcu=attiny32*: -m avr3}\
 823 %{mmcu=atmega8*|\
 824   mmcu=atmega4*|\
 825   mmcu=at90pwm1|\
 826   mmcu=at90pwm2|\
 827   mmcu=at90pwm2b|\
 828   mmcu=at90pwm3|\
 829   mmcu=at90pwm3b|\
 830   mmcu=at90pwm81: -m avr4}\
 831 %{mmcu=atmega16*|\
 832   mmcu=atmega32*|\
 833   mmcu=atmega406|\
 834   mmcu=atmega64*|\
 835   mmcu=atmega128*|\
 836   mmcu=at90can*|\
 837   mmcu=at90pwm216|\
 838   mmcu=at90pwm316|\
 839   mmcu=at90scr100|\
 840   mmcu=at90usb64*|\
 841   mmcu=at90usb128*|\
 842   mmcu=at94k|\
 843   mmcu=m3000*|\
 844   mmcu=m3001*: -m avr5}\
 845 %{mmcu=atmega256*:-m avr6}\
 846 %{mmcu=atmega324*|\
 847   mmcu=atmega325*|\
 848   mmcu=atmega328p|\
 849   mmcu=atmega329*|\
 850   mmcu=atmega406|\
 851   mmcu=atmega48*|\
 852   mmcu=atmega88*|\
 853   mmcu=atmega64|\
 854   mmcu=atmega644*|\
 855   mmcu=atmega645*|\
 856   mmcu=atmega649*|\
 857   mmcu=atmega128|\
 858   mmcu=atmega1284p|\
 859   mmcu=atmega162|\
 860   mmcu=atmega164*|\
 861   mmcu=atmega165*|\
 862   mmcu=atmega168*|\
 863   mmcu=atmega169*|\
 864   mmcu=atmega4hv*|\
 865   mmcu=atmega8hv*|\
 866   mmcu=atmega16hv*|\
 867   mmcu=atmega32hv*|\
 868   mmcu=attiny48|\
 869   mmcu=attiny88|\
 870   mmcu=attiny87|\
 871   mmcu=attiny167|\
 872   mmcu=attiny327|\
 873   mmcu=at90can*|\
 874   mmcu=at90pwm*|\
 875   mmcu=atmega8c1|\
 876   mmcu=atmega16c1|\
 877   mmcu=atmega32c1|\
 878   mmcu=atmega64c1|\
 879   mmcu=atmega8m1|\
 880   mmcu=atmega16m1|\
 881   mmcu=atmega32m1|\
 882   mmcu=atmega64m1|\
 883   mmcu=atmega16u4|\
 884   mmcu=atmega32u*|\
 885   mmcu=at90scr100|\
 886   mmcu=ata6289|\
 887   mmcu=at90usb*: -Tdata 0x800100}\
 888 %{mmcu=atmega640|\
 889   mmcu=atmega1280|\
 890   mmcu=atmega1281|\
 891   mmcu=atmega256*|\
 892   mmcu=atmega128rfa1: -Tdata 0x800200}\
 893 %{mmcu=m3000*|\
 894   mmcu=m3001*: -Tdata 0x801000}"
 895
 896 #define LIB_SPEC \
 897   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lc }}}}}"
 898
 899 #define LIBSTDCXX "-lgcc"
 900 /* No libstdc++ for now.  Empty string doesn't work.  */
 901
 902 #define LIBGCC_SPEC \
 903   "%{!mmcu=at90s1*:%{!mmcu=attiny11:%{!mmcu=attiny12:%{!mmcu=attiny15:%{!mmcu=attiny28: -lgcc }}}}}"
 904
 905 #define STARTFILE_SPEC "%(crt_binutils)"
 906
 907 #define ENDFILE_SPEC ""
 908
 909 #define CRT_BINUTILS_SPECS "\
 910 %{mmcu=at90s1200|mmcu=avr1:crts1200.o%s} \
 911 %{mmcu=attiny11:crttn11.o%s} \
 912 %{mmcu=attiny12:crttn12.o%s} \
 913 %{mmcu=attiny15:crttn15.o%s} \
 914 %{mmcu=attiny28:crttn28.o%s} \
 915 %{!mmcu*|mmcu=at90s8515|mmcu=avr2:crts8515.o%s} \
 916 %{mmcu=at90s2313:crts2313.o%s} \
 917 %{mmcu=at90s2323:crts2323.o%s} \
 918 %{mmcu=at90s2333:crts2333.o%s} \
 919 %{mmcu=at90s2343:crts2343.o%s} \
 920 %{mmcu=attiny22:crttn22.o%s} \
 921 %{mmcu=attiny26:crttn26.o%s} \
 922 %{mmcu=at90s4433:crts4433.o%s} \
 923 %{mmcu=at90s4414:crts4414.o%s} \
 924 %{mmcu=at90s4434:crts4434.o%s} \
 925 %{mmcu=at90c8534:crtc8534.o%s} \
 926 %{mmcu=at90s8535:crts8535.o%s} \
 927 %{mmcu=at86rf401:crt86401.o%s} \
 928 %{mmcu=attiny13:crttn13.o%s} \
 929 %{mmcu=attiny13a:crttn13a.o%s} \
 930 %{mmcu=attiny2313|mmcu=avr25:crttn2313.o%s} \
 931 %{mmcu=attiny24:crttn24.o%s} \
 932 %{mmcu=attiny44:crttn44.o%s} \
 933 %{mmcu=attiny84:crttn84.o%s} \
 934 %{mmcu=attiny25:crttn25.o%s} \
 935 %{mmcu=attiny45:crttn45.o%s} \
 936 %{mmcu=attiny85:crttn85.o%s} \
 937 %{mmcu=attiny261:crttn261.o%s} \
 938 %{mmcu=attiny461:crttn461.o%s} \
 939 %{mmcu=attiny861:crttn861.o%s} \
 940 %{mmcu=attiny43u:crttn43u.o%s} \
 941 %{mmcu=attiny87:crttn87.o%s} \
 942 %{mmcu=attiny48:crttn48.o%s} \
 943 %{mmcu=attiny88:crttn88.o%s} \
 944 %{mmcu=ata6289:crta6289.o%s} \
 945 %{mmcu=at43usb355|mmcu=avr3:crt43355.o%s} \
 946 %{mmcu=at76c711:crt76711.o%s} \
 947 %{mmcu=atmega103|mmcu=avr31:crtm103.o%s} \
 948 %{mmcu=at43usb320:crt43320.o%s} \
 949 %{mmcu=at90usb162|mmcu=avr35:crtusb162.o%s} \
 950 %{mmcu=at90usb82:crtusb82.o%s} \
 951 %{mmcu=attiny167:crttn167.o%s} \
 952 %{mmcu=attiny327:crttn327.o%s} \
 953 %{mmcu=atmega8|mmcu=avr4:crtm8.o%s} \
 954 %{mmcu=atmega48:crtm48.o%s} \
 955 %{mmcu=atmega48p:crtm48p.o%s} \
 956 %{mmcu=atmega88:crtm88.o%s} \
 957 %{mmcu=atmega88p:crtm88p.o%s} \
 958 %{mmcu=atmega8515:crtm8515.o%s} \
 959 %{mmcu=atmega8535:crtm8535.o%s} \
 960 %{mmcu=atmega8c1:crtm8c1.o%s} \
 961 %{mmcu=atmega8m1:crtm8m1.o%s} \
 962 %{mmcu=at90pwm1:crt90pwm1.o%s} \
 963 %{mmcu=at90pwm2:crt90pwm2.o%s} \
 964 %{mmcu=at90pwm2b:crt90pwm2b.o%s} \
 965 %{mmcu=at90pwm3:crt90pwm3.o%s} \
 966 %{mmcu=at90pwm3b:crt90pwm3b.o%s} \
 967 %{mmcu=at90pwm81:crt90pwm81.o%s} \
 968 %{mmcu=atmega16:crtm16.o%s} \
 969 %{mmcu=atmega161|mmcu=avr5:crtm161.o%s} \
 970 %{mmcu=atmega162:crtm162.o%s} \
 971 %{mmcu=atmega163:crtm163.o%s} \
 972 %{mmcu=atmega164p:crtm164p.o%s} \
 973 %{mmcu=atmega165:crtm165.o%s} \
 974 %{mmcu=atmega165p:crtm165p.o%s} \
 975 %{mmcu=atmega168:crtm168.o%s} \
 976 %{mmcu=atmega168p:crtm168p.o%s} \
 977 %{mmcu=atmega169:crtm169.o%s} \
 978 %{mmcu=atmega169p:crtm169p.o%s} \
 979 %{mmcu=atmega32:crtm32.o%s} \
 980 %{mmcu=atmega323:crtm323.o%s} \
 981 %{mmcu=atmega324p:crtm324p.o%s} \
 982 %{mmcu=atmega325:crtm325.o%s} \
 983 %{mmcu=atmega325p:crtm325p.o%s} \
 984 %{mmcu=atmega3250:crtm3250.o%s} \
 985 %{mmcu=atmega3250p:crtm3250p.o%s} \
 986 %{mmcu=atmega328p:crtm328p.o%s} \
 987 %{mmcu=atmega329:crtm329.o%s} \
 988 %{mmcu=atmega329p:crtm329p.o%s} \
 989 %{mmcu=atmega3290:crtm3290.o%s} \
 990 %{mmcu=atmega3290p:crtm3290p.o%s} \
 991 %{mmcu=atmega406:crtm406.o%s} \
 992 %{mmcu=atmega64:crtm64.o%s} \
 993 %{mmcu=atmega640:crtm640.o%s} \
 994 %{mmcu=atmega644:crtm644.o%s} \
 995 %{mmcu=atmega644p:crtm644p.o%s} \
 996 %{mmcu=atmega645:crtm645.o%s} \
 997 %{mmcu=atmega6450:crtm6450.o%s} \
 998 %{mmcu=atmega649:crtm649.o%s} \
 999 %{mmcu=atmega6490:crtm6490.o%s} \
1000 %{mmcu=atmega8hva:crtm8hva.o%s} \
1001 %{mmcu=atmega16hva:crtm16hva.o%s} \
1002 %{mmcu=atmega16hvb:crtm16hvb.o%s} \
1003 %{mmcu=atmega32hvb:crtm32hvb.o%s} \
1004 %{mmcu=atmega4hvd:crtm4hvd.o%s} \
1005 %{mmcu=atmega8hvd:crtm8hvd.o%s} \
1006 %{mmcu=at90can32:crtcan32.o%s} \
1007 %{mmcu=at90can64:crtcan64.o%s} \
1008 %{mmcu=at90pwm216:crt90pwm216.o%s} \
1009 %{mmcu=at90pwm316:crt90pwm316.o%s} \
1010 %{mmcu=atmega16c1:crtm16c1.o%s} \
1011 %{mmcu=atmega32c1:crtm32c1.o%s} \
1012 %{mmcu=atmega64c1:crtm64c1.o%s} \
1013 %{mmcu=atmega16m1:crtm16m1.o%s} \
1014 %{mmcu=atmega32m1:crtm32m1.o%s} \
1015 %{mmcu=atmega64m1:crtm64m1.o%s} \
1016 %{mmcu=atmega16u4:crtm16u4.o%s} \
1017 %{mmcu=atmega32u4:crtm32u4.o%s} \
1018 %{mmcu=atmega32u6:crtm32u6.o%s} \
1019 %{mmcu=at90scr100:crt90scr100.o%s} \
1020 %{mmcu=at90usb646:crtusb646.o%s} \
1021 %{mmcu=at90usb647:crtusb647.o%s} \
1022 %{mmcu=at94k:crtat94k.o%s} \
1023 %{mmcu=atmega128|mmcu=avr51:crtm128.o%s} \
1024 %{mmcu=atmega1280:crtm1280.o%s} \
1025 %{mmcu=atmega1281:crtm1281.o%s} \
1026 %{mmcu=atmega1284p:crtm1284p.o%s} \
1027 %{mmcu=at90can128:crtcan128.o%s} \
1028 %{mmcu=atmega128rfa1:crtm128rfa1.o%s} \
1029 %{mmcu=at90usb1286:crtusb1286.o%s} \
1030 %{mmcu=at90usb1287:crtusb1287.o%s} \
1031 %{mmcu=m3000f:crtm3000f.o%s} \
1032 %{mmcu=m3000s:crtm3000s.o%s} \
1033 %{mmcu=m3001b:crtm3001b.o%s} \
1034 %{mmcu=atmega2560|mmcu=avr6:crtm2560.o%s} \
1035 %{mmcu=atmega2561:crtm2561.o%s}"
1036
1037 #define EXTRA_SPECS {"crt_binutils", CRT_BINUTILS_SPECS},
1038
1039 /* This is the default without any -mmcu=* option (AT90S*).  */
1040 #define MULTILIB_DEFAULTS { "mmcu=avr2" }
1041
1042 /* This is undefined macro for collect2 disabling */
1043 #define LINKER_NAME "ld"
1044
1045 #define TEST_HARD_REG_CLASS(CLASS, REGNO) \
1046   TEST_HARD_REG_BIT (reg_class_contents[ (int) (CLASS)], REGNO)
1047
1048 /* Note that the other files fail to use these
1049    in some of the places where they should.  */
1050
1051 #if defined(__STDC__) || defined(ALMOST_STDC)
1052 #define AS2(a,b,c) #a " " #b "," #c
1053 #define AS2C(b,c) " " #b "," #c
1054 #define AS3(a,b,c,d) #a " " #b "," #c "," #d
1055 #define AS1(a,b) #a " " #b
1056 #else
1057 #define AS1(a,b) "a     b"
1058 #define AS2(a,b,c) "a   b,c"
1059 #define AS2C(b,c) " b,c"
1060 #define AS3(a,b,c,d) "a b,c,d"
1061 #endif
1062 #define OUT_AS1(a,b) output_asm_insn (AS1(a,b), operands)
1063 #define OUT_AS2(a,b,c) output_asm_insn (AS2(a,b,c), operands)
1064 #define CR_TAB "\n\t"
1065
1066 #define PREFERRED_DEBUGGING_TYPE DBX_DEBUG
1067
1068 #define DWARF2_DEBUGGING_INFO 1
1069
1070 #define DWARF2_ADDR_SIZE 4
1071
1072 #define OBJECT_FORMAT_ELF
1073
1074 #define HARD_REGNO_RENAME_OK(OLD_REG, NEW_REG) \
1075   avr_hard_regno_rename_ok (OLD_REG, NEW_REG)
1076
1077 /* A C structure for machine-specific, per-function data.
1078    This is added to the cfun structure.  */
1079 struct GTY(()) machine_function
1080 {
1081   /* 'true' - if the current function is a leaf function.  */
1082   int is_leaf;
1083
1084   /* 'true' - if current function is a naked function.  */
1085   int is_naked;
1086
1087   /* 'true' - if current function is an interrupt function
1088      as specified by the "interrupt" attribute.  */
1089   int is_interrupt;
1090
1091   /* 'true' - if current function is a signal function
1092      as specified by the "signal" attribute.  */
1093   int is_signal;
1094
1095   /* 'true' - if current function is a 'task' function
1096      as specified by the "OS_task" attribute.  */
1097   int is_OS_task;
1098
1099   /* 'true' - if current function is a 'main' function
1100      as specified by the "OS_main" attribute.  */
1101   int is_OS_main;
1102 };