Return to tm-alliant.h CVS log

Up to [GCC 1.x] / gcc

Annotation of gcc/tm-alliant.h, revision 1.1

1.1     ! root        1: /* Definitions of target machine for GNU compiler.  Alliant FX/8 version.
        !             2:    Copyright (C) 1987, 1988 Free Software Foundation, Inc.
        !             3: 
        !             4: This file is part of GNU CC.
        !             5: 
        !             6: GNU CC is distributed in the hope that it will be useful,
        !             7: but WITHOUT ANY WARRANTY.  No author or distributor
        !             8: accepts responsibility to anyone for the consequences of using it
        !             9: or for whether it serves any particular purpose or works at all,
        !            10: unless he says so in writing.  Refer to the GNU CC General Public
        !            11: License for full details.
        !            12: 
        !            13: Everyone is granted permission to copy, modify and redistribute
        !            14: GNU CC, but only under the conditions described in the
        !            15: GNU CC General Public License.   A copy of this license is
        !            16: supposed to have been given to you along with GNU CC so you
        !            17: can know your rights and responsibilities.  It should be in a
        !            18: file named COPYING.  Among other things, the copyright notice
        !            19: and this notice must be preserved on all copies.  */
        !            20: 
        !            21: 
        !            22: /* Note that some other tm- files include this one and then override
        !            23:    many of the definitions that relate to assembler syntax.  */
        !            24: 
        !            25: 
        !            26: /* Names to predefine in the preprocessor for this target machine.  */
        !            27: 
        !            28: /* See tm-sun3.h, tm-sun2.h, tm-isi68.h for different CPP_PREDEFINES.  */
        !            29: 
        !            30: /* Print subsidiary information on the compiler version in use.  */
        !            31: #ifdef MOTOROLA
        !            32: #define TARGET_VERSION printf (" (68k, Motorola syntax)");
        !            33: #else
        !            34: #define TARGET_VERSION printf (" (68k, MIT syntax)");
        !            35: #endif
        !            36: 
        !            37: /* Run-time compilation parameters selecting different hardware subsets.  */
        !            38: 
        !            39: extern int target_flags;
        !            40: 
        !            41: /* Macros used in the machine description to test the flags.  */
        !            42: 
        !            43: /* Compile for a 68020 (not a 68000 or 68010).  */
        !            44: #define TARGET_68020 (target_flags & 1)
        !            45: /* Compile 68881 insns for floating point (not library calls).  */
        !            46: #define TARGET_68881 (target_flags & 2)
        !            47: /* Compile using 68020 bitfield insns.  */
        !            48: #define TARGET_BITFIELD (target_flags & 4)
        !            49: /* Compile using rtd insn calling sequence.
        !            50:    This will not work unless you use prototypes at least
        !            51:    for all functions that can take varying numbers of args.  */
        !            52: #define TARGET_RTD (target_flags & 8)
        !            53: /* Compile passing first two args in regs 0 and 1.
        !            54:    This exists only to test compiler features that will
        !            55:    be needed for RISC chips.  It is not usable
        !            56:    and is not intended to be usable on this cpu.  */
        !            57: #define TARGET_REGPARM (target_flags & 020)
        !            58: /* Compile with 16-bit `int'.  */
        !            59: #define TARGET_SHORT (target_flags & 040)
        !            60: 
        !            61: /* Compile with special insns for Sun FPA.  */
        !            62: #define TARGET_FPA (target_flags & 0100)
        !            63: 
        !            64: /* Macro to define tables used to set the flags.
        !            65:    This is a list in braces of pairs in braces,
        !            66:    each pair being { "NAME", VALUE }
        !            67:    where VALUE is the bits to set or minus the bits to clear.
        !            68:    An empty string NAME is used to identify the default VALUE.  */
        !            69: 
        !            70: #define TARGET_SWITCHES  \
        !            71:   { { "68020", 5},                             \
        !            72:     { "c68020", 5},                            \
        !            73:     { "68881", 2},                             \
        !            74:     { "bitfield", 4},                          \
        !            75:     { "68000", -5},                            \
        !            76:     { "c68000", -5},                           \
        !            77:     { "soft-float", -0102},                    \
        !            78:     { "nobitfield", -4},                       \
        !            79:     { "rtd", 8},                               \
        !            80:     { "nortd", -8},                            \
        !            81:     { "short", 040},                           \
        !            82:     { "noshort", -040},                                \
        !            83:     { "fpa", 0100},                            \
        !            84:     { "nofpa", -0100},                         \
        !            85:     { "", TARGET_DEFAULT}}
        !            86: 
        !            87: /* TARGET_DEFAULT is defined in tm-sun*.h and tm-isi68.h, etc.  */
        !            88: 
        !            89: /* Blow away 68881 flag silently on TARGET_FPA (since we can't clear
        !            90:    any bits in TARGET_SWITCHES above) */
        !            91: #define OVERRIDE_OPTIONS               \
        !            92: {                                      \
        !            93:   if (TARGET_FPA) target_flags &= ~2;  \
        !            94: }
        !            95: 
        !            96: /* target machine storage layout */
        !            97: 
        !            98: /* Define this if most significant bit is lowest numbered
        !            99:    in instructions that operate on numbered bit-fields.
        !           100:    This is true for 68020 insns such as bfins and bfexts.
        !           101:    We make it true always by avoiding using the single-bit insns
        !           102:    except in special cases with constant bit numbers.  */
        !           103: #define BITS_BIG_ENDIAN
        !           104: 
        !           105: /* Define this if most significant byte of a word is the lowest numbered.  */
        !           106: /* That is true on the 68000.  */
        !           107: #define BYTES_BIG_ENDIAN
        !           108: 
        !           109: /* Define this if most significant word of a multiword number is numbered.  */
        !           110: /* For 68000 we can decide arbitrarily
        !           111:    since there are no machine instructions for them.  */
        !           112: /* #define WORDS_BIG_ENDIAN */
        !           113: 
        !           114: /* number of bits in an addressible storage unit */
        !           115: #define BITS_PER_UNIT 8
        !           116: 
        !           117: /* Width in bits of a "word", which is the contents of a machine register.
        !           118:    Note that this is not necessarily the width of data type `int';
        !           119:    if using 16-bit ints on a 68000, this would still be 32.
        !           120:    But on a machine with 16-bit registers, this would be 16.  */
        !           121: #define BITS_PER_WORD 32
        !           122: 
        !           123: /* Width of a word, in units (bytes).  */
        !           124: #define UNITS_PER_WORD 4
        !           125: 
        !           126: /* Width in bits of a pointer.
        !           127:    See also the macro `Pmode' defined below.  */
        !           128: #define POINTER_SIZE 32
        !           129: 
        !           130: /* Allocation boundary (in *bits*) for storing pointers in memory.  */
        !           131: #define POINTER_BOUNDARY 16
        !           132: 
        !           133: /* Allocation boundary (in *bits*) for storing arguments in argument list.  */
        !           134: #define PARM_BOUNDARY (TARGET_SHORT ? 16 : 32)
        !           135: 
        !           136: /* Boundary (in *bits*) on which stack pointer should be aligned.  */
        !           137: #define STACK_BOUNDARY 16
        !           138: 
        !           139: /* Allocation boundary (in *bits*) for the code of a function.  */
        !           140: #define FUNCTION_BOUNDARY 16
        !           141: 
        !           142: /* Alignment of field after `int : 0' in a structure.  */
        !           143: #define EMPTY_FIELD_BOUNDARY 16
        !           144: 
        !           145: /* No data type wants to be aligned rounder than this.  */
        !           146: #define BIGGEST_ALIGNMENT 16
        !           147: 
        !           148: /* Define this if move instructions will actually fail to work
        !           149:    when given unaligned data.  */
        !           150: #define STRICT_ALIGNMENT
        !           151: 
        !           152: /* Define number of bits in most basic integer type.
        !           153:    (If undefined, default is BITS_PER_WORD).  */
        !           154: 
        !           155: #define INT_TYPE_SIZE (TARGET_SHORT ? 16 : 32)
        !           156: 
        !           157: /* Standard register usage.  */
        !           158: 
        !           159: /* Number of actual hardware registers.
        !           160:    The hardware registers are assigned numbers for the compiler
        !           161:    from 0 to just below FIRST_PSEUDO_REGISTER.
        !           162:    All registers that the compiler knows about must be given numbers,
        !           163:    even those that are not normally considered general registers.
        !           164:    For the 68000, we give the data registers numbers 0-7,
        !           165:    the address registers numbers 010-017,
        !           166:    and the 68881 floating point registers numbers 020-027.  */
        !           167: #define FIRST_PSEUDO_REGISTER 56 
        !           168: 
        !           169: /* 1 for registers that have pervasive standard uses
        !           170:    and are not available for the register allocator.
        !           171:    On the 68000, only the stack pointer is such.  */
        !           172: /* fpa0 is also reserved so that it can be used to move shit back and
        !           173:    forth between high fpa regs and everything else. */
        !           174: #define FIXED_REGISTERS  \
        !           175:  {0, 0, 0, 0, 0, 0, 0, 0, \
        !           176:   1, 0, 0, 0, 0, 0, 1, 1, \
        !           177:   0, 0, 0, 0, 0, 0, 0, 0  }
        !           178: 
        !           179: /* 1 for registers not available across function calls.
        !           180:    These must include the FIXED_REGISTERS and also any
        !           181:    registers that can be used without being saved.
        !           182:    The latter must include the registers where values are returned
        !           183:    and the register where structure-value addresses are passed.
        !           184:    Aside from that, you can include as many other registers as you like.  */
        !           185: 
        !           186: #define CALL_USED_REGISTERS \
        !           187:  {1, 1, 1, 1, 1, 1, 1, 1, \
        !           188:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           189:   1, 1, 1, 1, 1, 1, 1, 1  }
        !           190: 
        !           191: /* Make sure everything's fine if we *don't* have a given processor.
        !           192:    This assumes that putting a register in fixed_regs will keep the
        !           193:    compilers mitt's completely off it.  We don't bother to zero it out
        !           194:    of register classes.  If neither TARGET_FPA or TARGET_68881 is set,
        !           195:    the compiler won't touch since no instructions that use these
        !           196:    registers will be valid.  */
        !           197: #define CONDITIONAL_REGISTER_USAGE \
        !           198: {                                              \
        !           199:   int i;                                       \
        !           200:   HARD_REG_SET x;                              \
        !           201:   if (!TARGET_FPA)                             \
        !           202:     {                                          \
        !           203:       COPY_HARD_REG_SET (x, reg_class_contents[(int)FPA_REGS]); \
        !           204:       for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \
        !           205:        if (TEST_HARD_REG_BIT (x, i))           \
        !           206:        fixed_regs[i] = call_used_regs[i] = 1;  \
        !           207:     }                                          \
        !           208: }
        !           209: 
        !           210: /* Return number of consecutive hard regs needed starting at reg REGNO
        !           211:    to hold something of mode MODE.
        !           212:    This is ordinarily the length in words of a value of mode MODE
        !           213:    but can be less for certain modes in special long registers.
        !           214: 
        !           215:    On the 68000, ordinary registers hold 32 bits worth;
        !           216:    for the 68881 registers, a single register is always enough for
        !           217:    anything that can be stored in them at all.  */
        !           218: #define HARD_REGNO_NREGS(REGNO, MODE)   \
        !           219:   ((REGNO) >= 16 ? 1                           \
        !           220:    : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           221: 
        !           222: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
        !           223:    On the 68000, the cpu registers can hold any mode but the 68881 registers
        !           224:    can hold only SFmode or DFmode.  And the 68881 registers can't hold anything
        !           225:    if 68881 use is disabled.  However, the Sun FPA register can
        !           226:    (apparently) hold whatever you feel like putting in them.  */
        !           227: #define HARD_REGNO_MODE_OK(REGNO, MODE) \
        !           228:   ((REGNO) < 16                                                                \
        !           229:    || ((REGNO) < 24                                                    \
        !           230:        ? TARGET_68881 && ((MODE) == SFmode || (MODE) == DFmode)                \
        !           231:        : ((REGNO) < 56                                                 \
        !           232:          ? TARGET_FPA : 0)))
        !           233: 
        !           234: /* Value is 1 if it is a good idea to tie two pseudo registers
        !           235:    when one has mode MODE1 and one has mode MODE2.
        !           236:    If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
        !           237:    for any hard reg, then this must be 0 for correct output.  */
        !           238: #define MODES_TIEABLE_P(MODE1, MODE2)                  \
        !           239:   (! TARGET_68881                                      \
        !           240:    || (((MODE1) == SFmode || (MODE1) == DFmode)                \
        !           241:        == ((MODE2) == SFmode || (MODE2) == DFmode)))
        !           242: 
        !           243: /* Specify the registers used for certain standard purposes.
        !           244:    The values of these macros are register numbers.  */
        !           245: 
        !           246: /* m68000 pc isn't overloaded on a register.  */
        !           247: /* #define PC_REGNUM  */
        !           248: 
        !           249: /* Register to use for pushing function arguments.  */
        !           250: #define STACK_POINTER_REGNUM 15
        !           251: 
        !           252: /* Base register for access to local variables of the function.  */
        !           253: #define FRAME_POINTER_REGNUM 14
        !           254: 
        !           255: /* Value should be nonzero if functions must have frame pointers.
        !           256:    Zero means the frame pointer need not be set up (and parms
        !           257:    may be accessed via the stack pointer) in functions that seem suitable.
        !           258:    This is computed in `reload', in reload1.c.  */
        !           259: #define FRAME_POINTER_REQUIRED 1
        !           260: 
        !           261: /* Base register for access to arguments of the function.  */
        !           262: #define ARG_POINTER_REGNUM  8 
        !           263: 
        !           264: /* Register in which static-chain is passed to a function.  */
        !           265: #define STATIC_CHAIN_REGNUM 8
        !           266: 
        !           267: /* Register in which address to store a structure value
        !           268:    is passed to a function.  */
        !           269: #define STRUCT_VALUE_REGNUM 9
        !           270: 
        !           271: /* Define the classes of registers for register constraints in the
        !           272:    machine description.  Also define ranges of constants.
        !           273: 
        !           274:    One of the classes must always be named ALL_REGS and include all hard regs.
        !           275:    If there is more than one class, another class must be named NO_REGS
        !           276:    and contain no registers.
        !           277: 
        !           278:    The name GENERAL_REGS must be the name of a class (or an alias for
        !           279:    another name such as ALL_REGS).  This is the class of registers
        !           280:    that is allowed by "g" or "r" in a register constraint.
        !           281:    Also, registers outside this class are allocated only when
        !           282:    instructions express preferences for them.
        !           283: 
        !           284:    The classes must be numbered in nondecreasing order; that is,
        !           285:    a larger-numbered class must never be contained completely
        !           286:    in a smaller-numbered class.
        !           287: 
        !           288:    For any two classes, it is very desirable that there be another
        !           289:    class that represents their union.  */
        !           290: 
        !           291: /* The 68000 has three kinds of registers, so eight classes would be
        !           292:    a complete set.  One of them is not needed.  */
        !           293: 
        !           294: /*
        !           295:  * Notes on final choices:
        !           296:  *
        !           297:  *   1) Didn't feel any need to union-ize LOW_FPA_REGS with anything
        !           298:  * else.
        !           299:  *   2) Removed all unions that involve address registers with
        !           300:  * floating point registers (left in unions of address and data with
        !           301:  * floating point).
        !           302:  *   3) Defined GENERAL_REGS as ADDR_OR_DATA_REGS.
        !           303:  *   4) Defined ALL_REGS as FPA_OR_FP_OR_GENERAL_REGS.
        !           304:  *   4) Left in everything else.
        !           305:  */
        !           306: enum reg_class { NO_REGS, LO_FPA_REGS, FPA_REGS, FP_REGS, 
        !           307:   FP_OR_FPA_REGS, DATA_REGS, DATA_OR_FPA_REGS, DATA_OR_FP_REGS, 
        !           308:   DATA_OR_FP_OR_FPA_REGS, ADDR_REGS, GENERAL_REGS, 
        !           309:   GENERAL_OR_FPA_REGS, GENERAL_OR_FP_REGS, ALL_REGS,
        !           310:   LIM_REG_CLASSES };
        !           311: 
        !           312: #define N_REG_CLASSES (int) LIM_REG_CLASSES
        !           313: 
        !           314: /* Give names of register classes as strings for dump file.   */
        !           315: 
        !           316: #define REG_CLASS_NAMES \
        !           317:  { "NO_REGS", "LO_FPA_REGS", "FPA_REGS", "FP_REGS",  \
        !           318:    "FP_OR_FPA_REGS", "DATA_REGS", "DATA_OR_FPA_REGS", "DATA_OR_FP_REGS",  \
        !           319:    "DATA_OR_FP_OR_FPA_REGS", "ADDR_REGS", "GENERAL_REGS",  \
        !           320:    "GENERAL_OR_FPA_REGS", "GENERAL_OR_FP_REGS", "ALL_REGS" }
        !           321: 
        !           322: /* Define which registers fit in which classes.
        !           323:    This is an initializer for a vector of HARD_REG_SET
        !           324:    of length N_REG_CLASSES.  */
        !           325: 
        !           326: #define REG_CLASS_CONTENTS \
        !           327: {                                                      \
        !           328:  {0, 0},                       /* NO_REGS */           \
        !           329:  {0xff000000, 0x000000ff},     /* LO_FPA_REGS */       \
        !           330:  {0xff000000, 0x00ffffff},     /* FPA_REGS */          \
        !           331:  {0x00ff0000, 0x00000000},     /* FP_REGS */           \
        !           332:  {0xffff0000, 0x00ffffff},     /* FP_OR_FPA_REGS */    \
        !           333:  {0x000000ff, 0x00000000},     /* DATA_REGS */         \
        !           334:  {0xff0000ff, 0x00ffffff},     /* DATA_OR_FPA_REGS */  \
        !           335:  {0x00ff00ff, 0x00000000},     /* DATA_OR_FP_REGS */   \
        !           336:  {0xffff00ff, 0x00ffffff},     /* DATA_OR_FP_OR_FPA_REGS */\
        !           337:  {0x0000ff00, 0x00000000},     /* ADDR_REGS */         \
        !           338:  {0x0000ffff, 0x00000000},     /* GENERAL_REGS */      \
        !           339:  {0xff00ffff, 0x00ffffff},     /* GENERAL_OR_FPA_REGS */\
        !           340:  {0x00ffffff, 0x00000000},     /* GENERAL_OR_FP_REGS */\
        !           341:  {0xffffffff, 0x00ffffff}      /* ALL_REGS */          \
        !           342: }
        !           343: 
        !           344: /* The same information, inverted:
        !           345:    Return the class number of the smallest class containing
        !           346:    reg number REGNO.  This could be a conditional expression
        !           347:    or could index an array.  */
        !           348: 
        !           349: extern enum reg_class regno_reg_class[];
        !           350: #define REGNO_REG_CLASS(REGNO) (regno_reg_class[(REGNO)>>3])
        !           351: 
        !           352: /* The class value for index registers, and the one for base regs.  */
        !           353: 
        !           354: #define INDEX_REG_CLASS GENERAL_REGS
        !           355: #define BASE_REG_CLASS ADDR_REGS
        !           356:   
        !           357: /* Get reg_class from a letter such as appears in the machine description.
        !           358:    We do a trick here to modify the effective constraints on the
        !           359:    machine description; we zorch the constraint letters that aren't
        !           360:    appropriate for a specific target.  This allows us to guarrantee
        !           361:    that a specific kind of register will not be used for a given taget
        !           362:    without fiddling with the register classes above. */
        !           363: 
        !           364: #define REG_CLASS_FROM_LETTER(C) \
        !           365:   ((C) == 'a' ? ADDR_REGS :                    \
        !           366:    ((C) == 'd' ? DATA_REGS :                   \
        !           367:     ((C) == 'f' ? (TARGET_68881 ? FP_REGS :    \
        !           368:                   NO_REGS) :                   \
        !           369:      ((C) == 'x' ? (TARGET_FPA ? FPA_REGS :    \
        !           370:                    NO_REGS) :                  \
        !           371:       ((C) == 'y' ? (TARGET_FPA ? LO_FPA_REGS :        \
        !           372:                     NO_REGS) :                 \
        !           373:        NO_REGS)))))
        !           374: 
        !           375: /* The letters I, J, K, L and M in a register constraint string
        !           376:    can be used to stand for particular ranges of immediate operands.
        !           377:    This macro defines what the ranges are.
        !           378:    C is the letter, and VALUE is a constant value.
        !           379:    Return 1 if VALUE is in the range specified by C.
        !           380: 
        !           381:    For the 68000, `I' is used for the range 1 to 8
        !           382:    allowed as immediate shift counts and in addq.
        !           383:    `J' is used for the range of signed numbers that fit in 16 bits.
        !           384:    `K' is for numbers that moveq can't handle.
        !           385:    `L' is for range -8 to -1, range of values that can be added with subq.  */
        !           386: 
        !           387: #define CONST_OK_FOR_LETTER_P(VALUE, C)  \
        !           388:   ((C) == 'I' ? (VALUE) > 0 && (VALUE) <= 8 :    \
        !           389:    (C) == 'J' ? (VALUE) >= -0x8000 && (VALUE) <= 0x7FFF :      \
        !           390:    (C) == 'K' ? (VALUE) < -0x80 || (VALUE) >= 0x80 :   \
        !           391:    (C) == 'L' ? (VALUE) < 0 && (VALUE) >= -8 : 0)
        !           392: 
        !           393: /*
        !           394:  * A small bit of explanation:
        !           395:  * "G" defines all of the floating constants that are *NOT* 68881
        !           396:  * constants.  this is so 68881 constants get reloaded and the
        !           397:  * fpmovecr is used.  "H" defines *only* the class of constants that
        !           398:  * the fpa can use, because these can be gotten at in any fpa
        !           399:  * instruction and there is no need to force reloads.
        !           400:  */
        !           401: 
        !           402: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C)  0
        !           403: 
        !           404: /* Given an rtx X being reloaded into a reg required to be
        !           405:    in class CLASS, return the class of reg to actually use.
        !           406:    In general this is just CLASS; but on some machines
        !           407:    in some cases it is preferable to use a more restrictive class.
        !           408:    On the 68000 series, use a data reg if possible when the
        !           409:    value is a constant in the range where moveq could be used
        !           410:    and we ensure that QImodes are reloaded into data regs.  */
        !           411: 
        !           412: #define PREFERRED_RELOAD_CLASS(X,CLASS)  \
        !           413:   ((GET_CODE (X) == CONST_INT                  \
        !           414:     && (unsigned) (INTVAL (X) + 0x80) < 0x100  \
        !           415:     && (CLASS) != ADDR_REGS)                   \
        !           416:    ? DATA_REGS                                 \
        !           417:    : GET_MODE (X) == QImode                    \
        !           418:    ? DATA_REGS                                 \
        !           419:    : (CLASS))
        !           420: 
        !           421: /* Return the maximum number of consecutive registers
        !           422:    needed to represent mode MODE in a register of class CLASS.  */
        !           423: /* On the 68000, this is the size of MODE in words,
        !           424:    except in the FP regs, where a single reg is always enough.  */
        !           425: #define CLASS_MAX_NREGS(CLASS, MODE)   \
        !           426:  ((CLASS) == FP_REGS || (CLASS) == FPA_REGS || (CLASS) == LO_FPA_REGS ? 1 \
        !           427:   : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           428: 
        !           429: /* Stack layout; function entry, exit and calling.  */
        !           430: 
        !           431: /* Define this if pushing a word on the stack
        !           432:    makes the stack pointer a smaller address.  */
        !           433: #define STACK_GROWS_DOWNWARD
        !           434: 
        !           435: /* Define this if the nominal address of the stack frame
        !           436:    is at the high-address end of the local variables;
        !           437:    that is, each additional local variable allocated
        !           438:    goes at a more negative offset in the frame.  */
        !           439: #define FRAME_GROWS_DOWNWARD
        !           440: 
        !           441: /* Offset within stack frame to start allocating local variables at.
        !           442:    If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
        !           443:    first local allocated.  Otherwise, it is the offset to the BEGINNING
        !           444:    of the first local allocated.  */
        !           445: #define STARTING_FRAME_OFFSET -4
        !           446: 
        !           447: /* If we generate an insn to push BYTES bytes,
        !           448:    this says how many the stack pointer really advances by.
        !           449:    On the 68000, sp@- in a byte insn really pushes a word.  */
        !           450: #define PUSH_ROUNDING(BYTES) (((BYTES) + 1) & ~1)
        !           451: 
        !           452: /* Offset of first parameter from the argument pointer register value.  */
        !           453: #define FIRST_PARM_OFFSET(FNDECL) 0
        !           454: 
        !           455: /* Value is 1 if returning from a function call automatically
        !           456:    pops the arguments described by the number-of-args field in the call.
        !           457:    FUNTYPE is the data type of the function (as a tree),
        !           458:    or for a library call it is an identifier node for the subroutine name.
        !           459: 
        !           460:    On the 68000, the RTS insn cannot pop anything.
        !           461:    On the 68010, the RTD insn may be used to pop them if the number
        !           462:      of args is fixed, but if the number is variable then the caller
        !           463:      must pop them all.  RTD can't be used for library calls now
        !           464:      because the library is compiled with the Unix compiler.
        !           465:    Use of RTD is a selectable option, since it is incompatible with
        !           466:    standard Unix calling sequences.  If the option is not selected,
        !           467:    the caller must always pop the args.  */
        !           468: 
        !           469: #define RETURN_POPS_ARGS(FUNTYPE)   \
        !           470:   (TARGET_RTD && TREE_CODE (FUNTYPE) != IDENTIFIER_NODE                \
        !           471:    && (TYPE_ARG_TYPES (FUNTYPE) == 0                           \
        !           472:        || TREE_VALUE (tree_last (TYPE_ARG_TYPES (FUNTYPE))) == void_type_node))
        !           473: 
        !           474: /* Define how to find the value returned by a function.
        !           475:    VALTYPE is the data type of the value (as a tree).
        !           476:    If the precise function being called is known, FUNC is its FUNCTION_DECL;
        !           477:    otherwise, FUNC is 0.  */
        !           478: 
        !           479: /* On the 68000 the return value is in D0 regardless.  */
        !           480: 
        !           481: #define FUNCTION_VALUE(VALTYPE, FUNC)  \
        !           482:   gen_rtx (REG, TYPE_MODE (VALTYPE), 0)
        !           483: 
        !           484: /* Define how to find the value returned by a library function
        !           485:    assuming the value has mode MODE.  */
        !           486: 
        !           487: /* On the 68000 the return value is in D0 regardless.  */
        !           488: 
        !           489: #define LIBCALL_VALUE(MODE)  gen_rtx (REG, MODE, 0)
        !           490: 
        !           491: /* 1 if N is a possible register number for a function value.
        !           492:    On the 68000, d0 is the only register thus used.  */
        !           493: 
        !           494: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0)
        !           495: 
        !           496: /* 1 if N is a possible register number for function argument passing.
        !           497:    On the 68000, no registers are used in this way.  */
        !           498: 
        !           499: #define FUNCTION_ARG_REGNO_P(N) 0
        !           500: 
        !           501: /* Define a data type for recording info about an argument list
        !           502:    during the scan of that argument list.  This data type should
        !           503:    hold all necessary information about the function itself
        !           504:    and about the args processed so far, enough to enable macros
        !           505:    such as FUNCTION_ARG to determine where the next arg should go.
        !           506: 
        !           507:    On the m68k, this is a single integer, which is a number of bytes
        !           508:    of arguments scanned so far.  */
        !           509: 
        !           510: #define CUMULATIVE_ARGS int
        !           511: 
        !           512: /* Initialize a variable CUM of type CUMULATIVE_ARGS
        !           513:    for a call to a function whose data type is FNTYPE.
        !           514:    For a library call, FNTYPE is 0.
        !           515: 
        !           516:    On the m68k, the offset starts at 0.  */
        !           517: 
        !           518: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE)       \
        !           519:  ((CUM) = 0)
        !           520: 
        !           521: /* Update the data in CUM to advance over an argument
        !           522:    of mode MODE and data type TYPE.
        !           523:    (TYPE is null for libcalls where that information may not be available.)  */
        !           524: 
        !           525: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)   \
        !           526:  ((CUM) += ((MODE) != BLKmode                  \
        !           527:            ? (GET_MODE_SIZE (MODE) + 3) & ~3   \
        !           528:            : (int_size_in_bytes (TYPE) + 3) & ~3))
        !           529: 
        !           530: /* Define where to put the arguments to a function.
        !           531:    Value is zero to push the argument on the stack,
        !           532:    or a hard register in which to store the argument.
        !           533: 
        !           534:    MODE is the argument's machine mode.
        !           535:    TYPE is the data type of the argument (as a tree).
        !           536:     This is null for libcalls where that information may
        !           537:     not be available.
        !           538:    CUM is a variable of type CUMULATIVE_ARGS which gives info about
        !           539:     the preceding args and about the function being called.
        !           540:    NAMED is nonzero if this argument is a named parameter
        !           541:     (otherwise it is an extra parameter matching an ellipsis).  */
        !           542: 
        !           543: /* On the 68000 all args are pushed, except if -mregparm is specified
        !           544:    then the first two words of arguments are passed in d0, d1.
        !           545:    *NOTE* -mregparm does not work.
        !           546:    It exists only to test register calling conventions.  */
        !           547: 
        !           548: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
        !           549: ((TARGET_REGPARM && (CUM) < 8) ? gen_rtx(REG, (MODE), (CUM)/4) : 0)
        !           550: 
        !           551: /* For an arg passed partly in registers and partly in memory,
        !           552:    this is the number of registers used.
        !           553:    For args passed entirely in registers or entirely in memory, zero.  */
        !           554: 
        !           555: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
        !           556: ((TARGET_REGPARM && (CUM) < 8                          \
        !           557:   && 8 < ((CUM) + ((MODE) == BLKmode                   \
        !           558:                      ? int_size_in_bytes (TYPE)                \
        !           559:                      : GET_MODE_SIZE (MODE))))                 \
        !           560:  ? 2 - (CUM) / 4 : 0)
        !           561: 
        !           562: /* This macro generates the assembly code for function entry.
        !           563:    FILE is a stdio stream to output the code to.
        !           564:    SIZE is an int: how many units of temporary storage to allocate.
        !           565:    Refer to the array `regs_ever_live' to determine which registers
        !           566:    to save; `regs_ever_live[I]' is nonzero if register number I
        !           567:    is ever used in the function.  This macro is responsible for
        !           568:    knowing which registers should not be saved even if used.  */
        !           569: 
        !           570: /* Note that the order of the bit mask for fmovem is the opposite
        !           571:    of the order for movem!  */
        !           572: 
        !           573: #define FUNCTION_PROLOGUE(FILE, SIZE)     \
        !           574: { int fsize = ((SIZE) + 3) & -4;                               \
        !           575:   if (frame_pointer_needed) {                                  \
        !           576:     if (TARGET_68020 || fsize < 0x8000)                                \
        !           577:       fprintf(FILE,"\tlink a6,#%d\n", -fsize);                 \
        !           578:     else                                                       \
        !           579:       fprintf(FILE,"\tlink a6,#0\n\tsubl #%d,sp\n", fsize); }          \
        !           580:   fprintf(FILE, "\tmovl a0,a6@(-4)\n" ); }
        !           581: 
        !           582: /* Output assembler code to FILE to increment profiler label # LABELNO
        !           583:    for profiling a function entry.  */
        !           584: 
        !           585: #define FUNCTION_PROFILER(FILE, LABELNO)  \
        !           586:   fprintf (FILE, "\tlea LP%d,a0\n\tjsr mcount\n", (LABELNO))
        !           587: 
        !           588: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
        !           589:    the stack pointer does not matter.  The value is tested only in
        !           590:    functions that have frame pointers.
        !           591:    No definition is equivalent to always zero.  */
        !           592: 
        !           593: #define EXIT_IGNORE_STACK 1
        !           594: 
        !           595: /* This macro generates the assembly code for function exit,
        !           596:    on machines that need it.  If FUNCTION_EPILOGUE is not defined
        !           597:    then individual return instructions are generated for each
        !           598:    return statement.  Args are same as for FUNCTION_PROLOGUE.
        !           599: 
        !           600:    The function epilogue should not depend on the current stack pointer!
        !           601:    It should use the frame pointer only.  This is mandatory because
        !           602:    of alloca; we also take advantage of it to omit stack adjustments
        !           603:    before returning.  */
        !           604: 
        !           605: #define FUNCTION_EPILOGUE(FILE, SIZE) \
        !           606: { extern int current_function_pops_args;                       \
        !           607:   extern int current_function_args_size;                       \
        !           608:   if (frame_pointer_needed)                                    \
        !           609:     fprintf (FILE, "\tunlk a6\n");                             \
        !           610:   if (current_function_pops_args && current_function_args_size)        \
        !           611:     fprintf (FILE, "\trtd #%d\n", current_function_args_size); \
        !           612:   else fprintf (FILE, "\trts\n"); }
        !           613: 
        !           614: /* If the memory address ADDR is relative to the frame pointer,
        !           615:    correct it to be relative to the stack pointer instead.
        !           616:    This is for when we don't use a frame pointer.
        !           617:    ADDR should be a variable name.  */
        !           618: 
        !           619: #define FIX_FRAME_POINTER_ADDRESS(ADDR,DEPTH)  \
        !           620: { int offset = -1;                                                     \
        !           621:   rtx regs = stack_pointer_rtx;                                                \
        !           622:   if (ADDR == frame_pointer_rtx)                                       \
        !           623:     offset = 0;                                                                \
        !           624:   else if (GET_CODE (ADDR) == PLUS && XEXP (ADDR, 0) == frame_pointer_rtx \
        !           625:           && GET_CODE (XEXP (ADDR, 1)) == CONST_INT)                   \
        !           626:     offset = INTVAL (XEXP (ADDR, 1));                                  \
        !           627:   else if (GET_CODE (ADDR) == PLUS && XEXP (ADDR, 0) == frame_pointer_rtx) \
        !           628:     { rtx other_reg = XEXP (ADDR, 1);                                  \
        !           629:       offset = 0;                                                      \
        !           630:       regs = gen_rtx (PLUS, Pmode, stack_pointer_rtx, other_reg); }    \
        !           631:   else if (GET_CODE (ADDR) == PLUS && XEXP (ADDR, 1) == frame_pointer_rtx) \
        !           632:     { rtx other_reg = XEXP (ADDR, 0);                                  \
        !           633:       offset = 0;                                                      \
        !           634:       regs = gen_rtx (PLUS, Pmode, stack_pointer_rtx, other_reg); }    \
        !           635:   else if (GET_CODE (ADDR) == PLUS                                     \
        !           636:           && GET_CODE (XEXP (ADDR, 0)) == PLUS                         \
        !           637:           && XEXP (XEXP (ADDR, 0), 0) == frame_pointer_rtx             \
        !           638:           && GET_CODE (XEXP (ADDR, 1)) == CONST_INT)                   \
        !           639:     { rtx other_reg = XEXP (XEXP (ADDR, 0), 1);                                \
        !           640:       offset = INTVAL (XEXP (ADDR, 1));                                        \
        !           641:       regs = gen_rtx (PLUS, Pmode, stack_pointer_rtx, other_reg); }    \
        !           642:   else if (GET_CODE (ADDR) == PLUS                                     \
        !           643:           && GET_CODE (XEXP (ADDR, 0)) == PLUS                         \
        !           644:           && XEXP (XEXP (ADDR, 0), 1) == frame_pointer_rtx             \
        !           645:           && GET_CODE (XEXP (ADDR, 1)) == CONST_INT)                   \
        !           646:     { rtx other_reg = XEXP (XEXP (ADDR, 0), 0);                                \
        !           647:       offset = INTVAL (XEXP (ADDR, 1));                                        \
        !           648:       regs = gen_rtx (PLUS, Pmode, stack_pointer_rtx, other_reg); }    \
        !           649:   if (offset >= 0)                                                     \
        !           650:     { int regno;                                                       \
        !           651:       extern char call_used_regs[];                                    \
        !           652:       for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++)         \
        !           653:         if (regs_ever_live[regno] && ! call_used_regs[regno])          \
        !           654:           offset += 12;                                                        \
        !           655:       for (regno = 0; regno < 16; regno++)                             \
        !           656:        if (regs_ever_live[regno] && ! call_used_regs[regno])           \
        !           657:          offset += 4;                                                  \
        !           658:       offset -= 4;                                                     \
        !           659:       ADDR = plus_constant (regs, offset + (DEPTH)); } }               \
        !           660: 
        !           661: /* Addressing modes, and classification of registers for them.  */
        !           662: 
        !           663: #define HAVE_POST_INCREMENT
        !           664: /* #define HAVE_POST_DECREMENT */
        !           665: 
        !           666: #define HAVE_PRE_DECREMENT
        !           667: /* #define HAVE_PRE_INCREMENT */
        !           668: 
        !           669: /* Macros to check register numbers against specific register classes.  */
        !           670: 
        !           671: /* These assume that REGNO is a hard or pseudo reg number.
        !           672:    They give nonzero only if REGNO is a hard reg of the suitable class
        !           673:    or a pseudo reg currently allocated to a suitable hard reg.
        !           674:    Since they use reg_renumber, they are safe only once reg_renumber
        !           675:    has been allocated, which happens in local-alloc.c.  */
        !           676: 
        !           677: #define REGNO_OK_FOR_INDEX_P(REGNO) \
        !           678: ((REGNO) < 16 || (unsigned) reg_renumber[REGNO] < 16)
        !           679: #define REGNO_OK_FOR_BASE_P(REGNO) \
        !           680: (((REGNO) ^ 010) < 8 || (unsigned) (reg_renumber[REGNO] ^ 010) < 8)
        !           681: #define REGNO_OK_FOR_DATA_P(REGNO) \
        !           682: ((REGNO) < 8 || (unsigned) reg_renumber[REGNO] < 8)
        !           683: #define REGNO_OK_FOR_FP_P(REGNO) \
        !           684: (((REGNO) ^ 020) < 8 || (unsigned) (reg_renumber[REGNO] ^ 020) < 8)
        !           685: 
        !           686: #define REGNO_OK_FOR_FPA_P(REGNO)      0 
        !           687: 
        !           688: /* Now macros that check whether X is a register and also,
        !           689:    strictly, whether it is in a specified class.
        !           690: 
        !           691:    These macros are specific to the 68000, and may be used only
        !           692:    in code for printing assembler insns and in conditions for
        !           693:    define_optimization.  */
        !           694: 
        !           695: /* 1 if X is a data register.  */
        !           696: 
        !           697: #define DATA_REG_P(X) (REG_P (X) && REGNO_OK_FOR_DATA_P (REGNO (X)))
        !           698: 
        !           699: /* 1 if X is an fp register.  */
        !           700: 
        !           701: #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X)))
        !           702: 
        !           703: /* 1 if X is an address register  */
        !           704: 
        !           705: #define ADDRESS_REG_P(X) (REG_P (X) && REGNO_OK_FOR_BASE_P (REGNO (X)))
        !           706: 
        !           707: /* 1 if X is a register in the Sun FPA.  */
        !           708: #define FPA_REG_P(X) 0
        !           709: 
        !           710: /* Maximum number of registers that can appear in a valid memory address.  */
        !           711: 
        !           712: #define MAX_REGS_PER_ADDRESS 2
        !           713: 
        !           714: /* Recognize any constant value that is a valid address.  */
        !           715: 
        !           716: #define CONSTANT_ADDRESS_P(X)  CONSTANT_P (X)
        !           717: 
        !           718: /* Nonzero if the constant value X is a legitimate general operand.
        !           719:    It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE.  */
        !           720: 
        !           721: #define LEGITIMATE_CONSTANT_P(X) 1
        !           722: 
        !           723: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
        !           724:    and check its validity for a certain class.
        !           725:    We have two alternate definitions for each of them.
        !           726:    The usual definition accepts all pseudo regs; the other rejects
        !           727:    them unless they have been allocated suitable hard regs.
        !           728:    The symbol REG_OK_STRICT causes the latter definition to be used.
        !           729: 
        !           730:    Most source files want to accept pseudo regs in the hope that
        !           731:    they will get allocated to the class that the insn wants them to be in.
        !           732:    Source files for reload pass need to be strict.
        !           733:    After reload, it makes no difference, since pseudo regs have
        !           734:    been eliminated by then.  */
        !           735: 
        !           736: #ifndef REG_OK_STRICT
        !           737: 
        !           738: /* Nonzero if X is a hard reg that can be used as an index
        !           739:    or if it is a pseudo reg.  */
        !           740: #define REG_OK_FOR_INDEX_P(X) ((REGNO (X) ^ 020) >= 8)
        !           741: /* Nonzero if X is a hard reg that can be used as a base reg
        !           742:    or if it is a pseudo reg.  */
        !           743: #define REG_OK_FOR_BASE_P(X) ((REGNO (X) & ~027) != 0)
        !           744: 
        !           745: #else
        !           746: 
        !           747: /* Nonzero if X is a hard reg that can be used as an index.  */
        !           748: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
        !           749: /* Nonzero if X is a hard reg that can be used as a base reg.  */
        !           750: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
        !           751: 
        !           752: #endif
        !           753: 
        !           754: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
        !           755:    that is a valid memory address for an instruction.
        !           756:    The MODE argument is the machine mode for the MEM expression
        !           757:    that wants to use this address.
        !           758: 
        !           759:    The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS.  */
        !           760: 
        !           761: #define INDIRECTABLE_1_ADDRESS_P(X)  \
        !           762:   (CONSTANT_ADDRESS_P (X)                                              \
        !           763:    || (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X))                   \
        !           764:    || ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_INC)           \
        !           765:        && REG_P (XEXP (X, 0))                                          \
        !           766:        && REG_OK_FOR_BASE_P (XEXP (X, 0)))                             \
        !           767:    || (GET_CODE (X) == PLUS                                            \
        !           768:        && REG_P (XEXP (X, 0)) && REG_OK_FOR_BASE_P (XEXP (X, 0))       \
        !           769:        && GET_CODE (XEXP (X, 1)) == CONST_INT                          \
        !           770:        && ((unsigned) INTVAL (XEXP (X, 1)) + 0x8000) < 0x10000))
        !           771: 
        !           772: #define GO_IF_NONINDEXED_ADDRESS(X, ADDR)  \
        !           773: { if (INDIRECTABLE_1_ADDRESS_P (X)) goto ADDR; }
        !           774: 
        !           775: #define GO_IF_INDEXABLE_BASE(X, ADDR)  \
        !           776: { if (GET_CODE (X) == LABEL_REF) goto ADDR;                            \
        !           777:   if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) goto ADDR; }
        !           778: 
        !           779: #define GO_IF_INDEXING(X, ADDR)        \
        !           780: { if (GET_CODE (X) == PLUS && LEGITIMATE_INDEX_P (XEXP (X, 0)))                \
        !           781:     { GO_IF_INDEXABLE_BASE (XEXP (X, 1), ADDR); }                      \
        !           782:   if (GET_CODE (X) == PLUS && LEGITIMATE_INDEX_P (XEXP (X, 1)))                \
        !           783:     { GO_IF_INDEXABLE_BASE (XEXP (X, 0), ADDR); } }
        !           784: 
        !           785: #define GO_IF_INDEXED_ADDRESS(X, ADDR)  \
        !           786: { GO_IF_INDEXING (X, ADDR);                                            \
        !           787:   if (GET_CODE (X) == PLUS)                                            \
        !           788:     { if (GET_CODE (XEXP (X, 1)) == CONST_INT                          \
        !           789:          && (unsigned) INTVAL (XEXP (X, 1)) + 0x80 < 0x100)            \
        !           790:        { rtx go_temp = XEXP (X, 0); GO_IF_INDEXING (go_temp, ADDR); }  \
        !           791:       if (GET_CODE (XEXP (X, 0)) == CONST_INT                          \
        !           792:          && (unsigned) INTVAL (XEXP (X, 0)) + 0x80 < 0x100)            \
        !           793:        { rtx go_temp = XEXP (X, 1); GO_IF_INDEXING (go_temp, ADDR); } } }
        !           794: 
        !           795: #define LEGITIMATE_INDEX_REG_P(X)   \
        !           796:   ((GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X))     \
        !           797:    || (GET_CODE (X) == SIGN_EXTEND                     \
        !           798:        && GET_CODE (XEXP (X, 0)) == REG                        \
        !           799:        && GET_MODE (XEXP (X, 0)) == HImode             \
        !           800:        && REG_OK_FOR_INDEX_P (XEXP (X, 0))))
        !           801: 
        !           802: #define LEGITIMATE_INDEX_P(X)   \
        !           803:    (LEGITIMATE_INDEX_REG_P (X)                         \
        !           804:     || (TARGET_68020 && GET_CODE (X) == MULT           \
        !           805:        && LEGITIMATE_INDEX_REG_P (XEXP (X, 0))         \
        !           806:        && GET_CODE (XEXP (X, 1)) == CONST_INT          \
        !           807:        && (INTVAL (XEXP (X, 1)) == 2                   \
        !           808:            || INTVAL (XEXP (X, 1)) == 4                \
        !           809:            || INTVAL (XEXP (X, 1)) == 8)))
        !           810: 
        !           811: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)  \
        !           812: { GO_IF_NONINDEXED_ADDRESS (X, ADDR);                  \
        !           813:   GO_IF_INDEXED_ADDRESS (X, ADDR); }
        !           814: 
        !           815: /* Try machine-dependent ways of modifying an illegitimate address
        !           816:    to be legitimate.  If we find one, return the new, valid address.
        !           817:    This macro is used in only one place: `memory_address' in explow.c.
        !           818: 
        !           819:    OLDX is the address as it was before break_out_memory_refs was called.
        !           820:    In some cases it is useful to look at this to decide what needs to be done.
        !           821: 
        !           822:    MODE and WIN are passed so that this macro can use
        !           823:    GO_IF_LEGITIMATE_ADDRESS.
        !           824: 
        !           825:    It is always safe for this macro to do nothing.  It exists to recognize
        !           826:    opportunities to optimize the output.
        !           827: 
        !           828:    For the 68000, we handle X+REG by loading X into a register R and
        !           829:    using R+REG.  R will go in an address reg and indexing will be used.
        !           830:    However, if REG is a broken-out memory address or multiplication,
        !           831:    nothing needs to be done because REG can certainly go in an address reg.  */
        !           832: 
        !           833: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN)   \
        !           834: { register int ch = (X) != (OLDX);                                     \
        !           835:   if (GET_CODE (X) == PLUS)                                            \
        !           836:     { if (GET_CODE (XEXP (X, 0)) == MULT)                              \
        !           837:        ch = 1, XEXP (X, 0) = force_operand (XEXP (X, 0), 0);           \
        !           838:       if (GET_CODE (XEXP (X, 1)) == MULT)                              \
        !           839:        ch = 1, XEXP (X, 1) = force_operand (XEXP (X, 1), 0);           \
        !           840:       if (ch && GET_CODE (XEXP (X, 1)) == REG                          \
        !           841:          && GET_CODE (XEXP (X, 0)) == REG)                             \
        !           842:        return X;                                                       \
        !           843:       if (ch) { GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN); }             \
        !           844:       if (GET_CODE (XEXP (X, 0)) == REG                                        \
        !           845:               || (GET_CODE (XEXP (X, 0)) == SIGN_EXTEND                \
        !           846:                   && GET_CODE (XEXP (XEXP (X, 0), 0)) == REG           \
        !           847:                   && GET_MODE (XEXP (XEXP (X, 0), 0)) == HImode))      \
        !           848:        { register rtx temp = gen_reg_rtx (Pmode);                      \
        !           849:          register rtx val = force_operand (XEXP (X, 1), 0);            \
        !           850:          emit_move_insn (temp, val);                                   \
        !           851:          XEXP (X, 1) = temp;                                           \
        !           852:          return X; }                                                   \
        !           853:       else if (GET_CODE (XEXP (X, 1)) == REG                           \
        !           854:               || (GET_CODE (XEXP (X, 1)) == SIGN_EXTEND                \
        !           855:                   && GET_CODE (XEXP (XEXP (X, 1), 0)) == REG           \
        !           856:                   && GET_MODE (XEXP (XEXP (X, 1), 0)) == HImode))      \
        !           857:        { register rtx temp = gen_reg_rtx (Pmode);                      \
        !           858:          register rtx val = force_operand (XEXP (X, 0), 0);            \
        !           859:          emit_move_insn (temp, val);                                   \
        !           860:          XEXP (X, 0) = temp;                                           \
        !           861:          return X; }}}
        !           862: 
        !           863: /* Go to LABEL if ADDR (a legitimate address expression)
        !           864:    has an effect that depends on the machine mode it is used for.
        !           865:    On the 68000, only predecrement and postincrement address depend thus
        !           866:    (the amount of decrement or increment being the length of the operand).  */
        !           867: 
        !           868: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)       \
        !           869:  if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) goto LABEL
        !           870: 
        !           871: /* Specify the machine mode that this machine uses
        !           872:    for the index in the tablejump instruction.  */
        !           873: #define CASE_VECTOR_MODE HImode
        !           874: 
        !           875: /* Define this if the tablejump instruction expects the table
        !           876:    to contain offsets from the address of the table.
        !           877:    Do not define this if the table should contain absolute addresses.  */
        !           878: #define CASE_VECTOR_PC_RELATIVE
        !           879: 
        !           880: /* Specify the tree operation to be used to convert reals to integers.  */
        !           881: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
        !           882: 
        !           883: /* This is the kind of divide that is easiest to do in the general case.  */
        !           884: #define EASY_DIV_EXPR TRUNC_DIV_EXPR
        !           885: 
        !           886: /* Define this as 1 if `char' should by default be signed; else as 0.  */
        !           887: #define DEFAULT_SIGNED_CHAR 1
        !           888: 
        !           889: /* Max number of bytes we can move from memory to memory
        !           890:    in one reasonably fast instruction.  */
        !           891: #define MOVE_MAX 4
        !           892: 
        !           893: /* Define this if zero-extension is slow (more than one real instruction).  */
        !           894: #define SLOW_ZERO_EXTEND
        !           895: 
        !           896: /* Nonzero if access to memory by bytes is slow and undesirable.  */
        !           897: #define SLOW_BYTE_ACCESS 0
        !           898: 
        !           899: /* Define if shifts truncate the shift count
        !           900:    which implies one can omit a sign-extension or zero-extension
        !           901:    of a shift count.  */
        !           902: #define SHIFT_COUNT_TRUNCATED
        !           903: 
        !           904: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
        !           905:    is done just by pretending it is already truncated.  */
        !           906: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
        !           907: 
        !           908: /* We assume that the store-condition-codes instructions store 0 for false
        !           909:    and some other value for true.  This is the value stored for true.  */
        !           910: 
        !           911: #define STORE_FLAG_VALUE -1
        !           912: 
        !           913: /* When a prototype says `char' or `short', really pass an `int'.  */
        !           914: #define PROMOTE_PROTOTYPES
        !           915: 
        !           916: /* Specify the machine mode that pointers have.
        !           917:    After generation of rtl, the compiler makes no further distinction
        !           918:    between pointers and any other objects of this machine mode.  */
        !           919: #define Pmode SImode
        !           920: 
        !           921: /* A function address in a call instruction
        !           922:    is a byte address (for indexing purposes)
        !           923:    so give the MEM rtx a byte's mode.  */
        !           924: #define FUNCTION_MODE QImode
        !           925: 
        !           926: /* Compute the cost of computing a constant rtl expression RTX
        !           927:    whose rtx-code is CODE.  The body of this macro is a portion
        !           928:    of a switch statement.  If the code is computed here,
        !           929:    return it with a return statement.  Otherwise, break from the switch.  */
        !           930: 
        !           931: #define CONST_COSTS(RTX,CODE) \
        !           932:   case CONST_INT:                                              \
        !           933:     /* Constant zero is super cheap due to clr instruction.  */        \
        !           934:     if (RTX == const0_rtx) return 0;                           \
        !           935:     if ((unsigned) INTVAL (RTX) < 077) return 1;               \
        !           936:   case CONST:                                                  \
        !           937:   case LABEL_REF:                                              \
        !           938:   case SYMBOL_REF:                                             \
        !           939:     return 3;                                                  \
        !           940:   case CONST_DOUBLE:                                           \
        !           941:     return 5;
        !           942: 
        !           943: /* Tell final.c how to eliminate redundant test instructions.  */
        !           944: 
        !           945: /* Here we define machine-dependent flags and fields in cc_status
        !           946:    (see `conditions.h').  */
        !           947: 
        !           948: /* On the Alliant, floating-point instructions do not modify the
        !           949:    ordinary CC register.  Only fcmp and ftest instructions modify the
        !           950:    floating-point CC register.  We should actually keep track of what
        !           951:    both kinds of CC registers contain, but for now we only consider
        !           952:    the most recent instruction that has set either register.  */
        !           953: 
        !           954: /* Set if the cc value came from a floating point test, so a floating
        !           955:    point conditional branch must be output.  */
        !           956: #define CC_IN_68881 04000
        !           957: 
        !           958: /* Store in cc_status the expressions
        !           959:    that the condition codes will describe
        !           960:    after execution of an instruction whose pattern is EXP.
        !           961:    Do not alter them if the instruction would not alter the cc's.  */
        !           962: 
        !           963: /* On the 68000, all the insns to store in an address register
        !           964:    fail to set the cc's.  However, in some cases these instructions
        !           965:    can make it possibly invalid to use the saved cc's.  In those
        !           966:    cases we clear out some or all of the saved cc's so they won't be used.  */
        !           967: 
        !           968: #define NOTICE_UPDATE_CC(EXP, INSN) \
        !           969: {                                                              \
        !           970:   if (GET_CODE (EXP) == SET)                                   \
        !           971:     { if (ADDRESS_REG_P (XEXP (EXP, 0)))                       \
        !           972:        { if (cc_status.value1                                  \
        !           973:              && reg_overlap_mentioned_p (XEXP (EXP, 0), cc_status.value1)) \
        !           974:            cc_status.value1 = 0;                               \
        !           975:          if (cc_status.value2                                  \
        !           976:              && reg_overlap_mentioned_p (XEXP (EXP, 0), cc_status.value2)) \
        !           977:            cc_status.value2 = 0; }                             \
        !           978:       else if (FP_REG_P (XEXP (EXP,0))                         \
        !           979:               || (FP_REG_P (XEXP (EXP,1))                      \
        !           980:                   && XEXP (EXP, 0) != cc0_rtx))                \
        !           981:        { }                                                     \
        !           982:       else if (!FP_REG_P (XEXP (EXP, 0))                       \
        !           983:               && XEXP (EXP, 0) != cc0_rtx                      \
        !           984:               && (FP_REG_P (XEXP (EXP, 1))                     \
        !           985:                   || GET_CODE (XEXP (EXP, 1)) == FIX           \
        !           986:                   || GET_CODE (XEXP (EXP, 1)) == FLOAT_TRUNCATE \
        !           987:                   || GET_CODE (XEXP (EXP, 1)) == FLOAT_EXTEND)) \
        !           988:        { CC_STATUS_INIT; }                                     \
        !           989:       else if (GET_CODE (SET_SRC (EXP)) == CALL)               \
        !           990:        { CC_STATUS_INIT; }                                     \
        !           991:       else if (XEXP (EXP, 0) != pc_rtx)                                \
        !           992:        { cc_status.flags = 0;                                  \
        !           993:          cc_status.value1 = XEXP (EXP, 0);                     \
        !           994:          cc_status.value2 = XEXP (EXP, 1); } }                 \
        !           995:   else if (GET_CODE (EXP) == PARALLEL                          \
        !           996:           && GET_CODE (XVECEXP (EXP, 0, 0)) == SET)            \
        !           997:     {                                                          \
        !           998:       if (ADDRESS_REG_P (XEXP (XVECEXP (EXP, 0, 0), 0)))       \
        !           999:        CC_STATUS_INIT;                                         \
        !          1000:       else if (XEXP (XVECEXP (EXP, 0, 0), 0) != pc_rtx)                \
        !          1001:        { cc_status.flags = 0;                                  \
        !          1002:          cc_status.value1 = XEXP (XVECEXP (EXP, 0, 0), 0);     \
        !          1003:          cc_status.value2 = XEXP (XVECEXP (EXP, 0, 0), 1); } } \
        !          1004:   else CC_STATUS_INIT;                                         \
        !          1005:   if (cc_status.value2 != 0                                    \
        !          1006:       && ADDRESS_REG_P (cc_status.value2)                      \
        !          1007:       && GET_MODE (cc_status.value2) == QImode)                        \
        !          1008:     CC_STATUS_INIT;                                            \
        !          1009:   if (cc_status.value2 != 0                                    \
        !          1010:       && !(cc_status.value1 && FPA_REG_P (cc_status.value1)))  \
        !          1011:     switch (GET_CODE (cc_status.value2))                       \
        !          1012:       { case PLUS: case MINUS: case MULT: case UMULT:          \
        !          1013:        case DIV: case UDIV: case MOD: case UMOD: case NEG:     \
        !          1014:        case ASHIFT: case LSHIFT: case ASHIFTRT: case LSHIFTRT: \
        !          1015:        case ROTATE: case ROTATERT:                             \
        !          1016:          if (GET_MODE (cc_status.value2) != VOIDmode)          \
        !          1017:            cc_status.flags |= CC_NO_OVERFLOW;                  \
        !          1018:          break;                                                \
        !          1019:        case ZERO_EXTEND:                                       \
        !          1020:          /* (SET r1 (ZERO_EXTEND r2)) on this machine
        !          1021:             ends with a move insn moving r2 in r2's mode.
        !          1022:             Thus, the cc's are set for r2.
        !          1023:             This can set N bit spuriously. */                  \
        !          1024:          cc_status.flags |= CC_NOT_NEGATIVE; }                 \
        !          1025:   if (cc_status.value1 && GET_CODE (cc_status.value1) == REG   \
        !          1026:       && cc_status.value2                                      \
        !          1027:       && reg_overlap_mentioned_p (cc_status.value1, cc_status.value2)) \
        !          1028:     cc_status.value2 = 0;                                      \
        !          1029:   if ((cc_status.value1 && FP_REG_P (cc_status.value1))                \
        !          1030:        || (cc_status.value2 && FP_REG_P (cc_status.value2)))   \
        !          1031:     cc_status.flags = CC_IN_68881; }
        !          1032: 
        !          1033: #define OUTPUT_JUMP(NORMAL, FLOAT, NO_OV)  \
        !          1034: { if (cc_prev_status.flags & CC_IN_68881)                      \
        !          1035:     return FLOAT;                                              \
        !          1036:   if (cc_prev_status.flags & CC_NO_OVERFLOW)                   \
        !          1037:     return NO_OV;                                              \
        !          1038:   return NORMAL; }
        !          1039: 
        !          1040: /* Control the assembler format that we output.  */
        !          1041: 
        !          1042: /* Output at beginning of assembler file.  */
        !          1043: 
        !          1044: #define ASM_FILE_START(FILE) fprintf (FILE, "#NO_APP\n");
        !          1045: 
        !          1046: /* Output to assembler file text saying following lines
        !          1047:    may contain character constants, extra white space, comments, etc.  */
        !          1048: 
        !          1049: #define ASM_APP_ON "#APP\n"
        !          1050: 
        !          1051: /* Output to assembler file text saying following lines
        !          1052:    no longer contain unusual constructs.  */
        !          1053: 
        !          1054: #define ASM_APP_OFF "#NO_APP\n"
        !          1055: 
        !          1056: /* Output before read-only data.  */
        !          1057: 
        !          1058: #define TEXT_SECTION_ASM_OP "\t.text"
        !          1059: 
        !          1060: /* Output before writable data.  */
        !          1061: 
        !          1062: #define DATA_SECTION_ASM_OP "\t.data"
        !          1063: 
        !          1064: /* How to refer to registers in assembler output.
        !          1065:    This sequence is indexed by compiler's hard-register-number (see above).  */
        !          1066: 
        !          1067: #define REGISTER_NAMES \
        !          1068: {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",       \
        !          1069:  "a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp",       \
        !          1070:  "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7" }
        !          1071: 
        !          1072: /* How to renumber registers for dbx and gdb.
        !          1073:    On the Sun-3, the floating point registers have numbers
        !          1074:    18 to 25, not 16 to 23 as they do in the compiler.  */
        !          1075: 
        !          1076: #define DBX_REGISTER_NUMBER(REGNO) ((REGNO) < 16 ? (REGNO) : (REGNO) + 2)
        !          1077: 
        !          1078: /* This is how to output the definition of a user-level label named NAME,
        !          1079:    such as the label on a static function or variable NAME.  */
        !          1080: 
        !          1081: #define ASM_OUTPUT_LABEL(FILE,NAME)    \
        !          1082:   do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
        !          1083: 
        !          1084: /* This is how to output a command to make the user-level label named NAME
        !          1085:    defined for reference from other files.  */
        !          1086: 
        !          1087: #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
        !          1088:   do { fputs ("\t.globl ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)
        !          1089: 
        !          1090: /* This is how to output a reference to a user-level label named NAME.
        !          1091:    `assemble_name' uses this.  */
        !          1092: 
        !          1093: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
        !          1094:   fprintf (FILE, "_%s", NAME)
        !          1095: 
        !          1096: /* This is how to output an internal numbered label where
        !          1097:    PREFIX is the class of label and NUM is the number within the class.  */
        !          1098: 
        !          1099: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)     \
        !          1100:   fprintf (FILE, "%s%d:\n", PREFIX, NUM)
        !          1101: 
        !          1102: /* This is how to store into the string LABEL
        !          1103:    the symbol_ref name of an internal numbered label where
        !          1104:    PREFIX is the class of label and NUM is the number within the class.
        !          1105:    This is suitable for output with `assemble_name'.  */
        !          1106: 
        !          1107: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)  \
        !          1108:   sprintf (LABEL, "*%s%d", PREFIX, NUM)
        !          1109: 
        !          1110: /* This is how to output an assembler line defining a `double' constant.  */
        !          1111: 
        !          1112: #define ASM_OUTPUT_DOUBLE(FILE,VALUE)  \
        !          1113: do { union { double d; long v[2];} tem;                        \
        !          1114:      tem.d = (VALUE);                                  \
        !          1115:      fprintf (FILE, "\t.long 0x%x,0x%x\n", tem.v[0], tem.v[1]);        \
        !          1116:    } while (0)
        !          1117: 
        !          1118: /* This is how to output an assembler line defining a `float' constant.  */
        !          1119: 
        !          1120: #define ASM_OUTPUT_FLOAT(FILE,VALUE)  \
        !          1121: do { union { float f; long l;} tem;                    \
        !          1122:      tem.f = (VALUE);                                  \
        !          1123:      fprintf (FILE, "\t.long 0x%x\n", tem.l);  \
        !          1124:    } while (0)
        !          1125: 
        !          1126: /* This is how to output an assembler line defining an `int' constant.  */
        !          1127: 
        !          1128: #define ASM_OUTPUT_INT(FILE,VALUE)  \
        !          1129: ( fprintf (FILE, "\t.long "),                  \
        !          1130:   output_addr_const (FILE, (VALUE)),           \
        !          1131:   fprintf (FILE, "\n"))
        !          1132: 
        !          1133: /* Likewise for `char' and `short' constants.  */
        !          1134: 
        !          1135: #define ASM_OUTPUT_SHORT(FILE,VALUE)  \
        !          1136: ( fprintf (FILE, "\t.word "),                  \
        !          1137:   output_addr_const (FILE, (VALUE)),           \
        !          1138:   fprintf (FILE, "\n"))
        !          1139: 
        !          1140: #define ASM_OUTPUT_CHAR(FILE,VALUE)  \
        !          1141: ( fprintf (FILE, "\t.byte "),                  \
        !          1142:   output_addr_const (FILE, (VALUE)),           \
        !          1143:   fprintf (FILE, "\n"))
        !          1144: 
        !          1145: #define ASM_OUTPUT_ASCII(FILE,PTR,SIZE)               \
        !          1146: { int i; unsigned char *pp = (unsigned char *) PTR;            \
        !          1147:   fprintf(FILE, "\t.byte %d", (unsigned int)*pp++);            \
        !          1148:   for (i = 1; i < SIZE; ++i, ++pp) {                           \
        !          1149:     if ((i % 8) == 0)                                          \
        !          1150:       fprintf(FILE, "\n\t.byte %d", (unsigned int) *pp);       \
        !          1151:     else                                                       \
        !          1152:       fprintf(FILE, ",%d", (unsigned int) *pp); }              \
        !          1153:   fprintf (FILE, "\n");       }
        !          1154: 
        !          1155: /* This is how to output an assembler line for a numeric constant byte.  */
        !          1156: 
        !          1157: #define ASM_OUTPUT_BYTE(FILE,VALUE)  \
        !          1158:   fprintf (FILE, "\t.byte 0x%x\n", (VALUE))
        !          1159: 
        !          1160: /* This is how to output an insn to push a register on the stack.
        !          1161:    It need not be very fast code.  */
        !          1162: 
        !          1163: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO)  \
        !          1164:   fprintf (FILE, "\tmovl %s,sp@-\n", reg_names[REGNO])
        !          1165: 
        !          1166: /* This is how to output an insn to pop a register from the stack.
        !          1167:    It need not be very fast code.  */
        !          1168: 
        !          1169: #define ASM_OUTPUT_REG_POP(FILE,REGNO)  \
        !          1170:   fprintf (FILE, "\tmovl sp@+,%s\n", reg_names[REGNO])
        !          1171: 
        !          1172: /* This is how to output an element of a case-vector that is absolute.
        !          1173:    (The 68000 does not use such vectors,
        !          1174:    but we must define this macro anyway.)  */
        !          1175: 
        !          1176: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
        !          1177:   fprintf (FILE, "\t.long L%d\n", VALUE)
        !          1178: 
        !          1179: /* This is how to output an element of a case-vector that is relative.  */
        !          1180: 
        !          1181: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)  \
        !          1182:   fprintf (FILE, "\t.word L%d-L%d\n", VALUE, REL)
        !          1183: 
        !          1184: /* This is how to output an assembler line
        !          1185:    that says to advance the location counter
        !          1186:    to a multiple of 2**LOG bytes.  */
        !          1187: 
        !          1188: #define ASM_OUTPUT_ALIGN(FILE,LOG)     \
        !          1189:   if ((LOG) == 1)                      \
        !          1190:     fprintf (FILE, "\t.even\n");       \
        !          1191:   else if ((LOG) != 0)                 \
        !          1192:     fprintf (FILE, "\t.align %dn", (LOG));     
        !          1193: 
        !          1194: #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
        !          1195:   fprintf (FILE, "\t. = . + %d\n", (SIZE))
        !          1196: 
        !          1197: /* This says how to output an assembler line
        !          1198:    to define a global common symbol.  */
        !          1199: 
        !          1200: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)  \
        !          1201: ( fputs ("\t.comm ", (FILE)),                  \
        !          1202:   assemble_name ((FILE), (NAME)),              \
        !          1203:   fprintf ((FILE), ",%d\n", (ROUNDED)))
        !          1204: 
        !          1205: /* This says how to output an assembler line
        !          1206:    to define a local common symbol.  */
        !          1207: 
        !          1208: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
        !          1209: ( fputs ("\t.lcomm ", (FILE)),                 \
        !          1210:   assemble_name ((FILE), (NAME)),              \
        !          1211:   fprintf ((FILE), ",%d\n", (ROUNDED)))
        !          1212: 
        !          1213: /* Store in OUTPUT a string (made with alloca) containing
        !          1214:    an assembler-name for a local static variable named NAME.
        !          1215:    LABELNO is an integer which is different for each call.  */
        !          1216: 
        !          1217: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
        !          1218: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10),   \
        !          1219:   sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
        !          1220: 
        !          1221: /* Define the parentheses used to group arithmetic operations
        !          1222:    in assembler code.  */
        !          1223: 
        !          1224: #define ASM_OPEN_PAREN "("
        !          1225: #define ASM_CLOSE_PAREN ")"
        !          1226: 
        !          1227: /* Define results of standard character escape sequences.  */
        !          1228: #define TARGET_BELL 007
        !          1229: #define TARGET_BS 010
        !          1230: #define TARGET_TAB 011
        !          1231: #define TARGET_NEWLINE 012
        !          1232: #define TARGET_VT 013
        !          1233: #define TARGET_FF 014
        !          1234: #define TARGET_CR 015
        !          1235: 
        !          1236: /* Print operand X (an rtx) in assembler syntax to file FILE.
        !          1237:    CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
        !          1238:    For `%' followed by punctuation, CODE is the punctuation and X is null.
        !          1239: 
        !          1240:    On the 68000, we use several CODE characters:
        !          1241:    'f' for float insn (print a CONST_DOUBLE as a float rather than in hex)
        !          1242:    'b' for byte insn (no effect, on the Sun; this is for the ISI).
        !          1243:    '.' for dot needed in Motorola-style opcode names.
        !          1244:    '-' for an operand pushing on the stack:
        !          1245:        sp@-, -(sp) or -(%sp) depending on the style of syntax.
        !          1246:    '+' for an operand pushing on the stack:
        !          1247:        sp@+, (sp)+ or (%sp)+ depending on the style of syntax.
        !          1248:    's' for a reference to the top word on the stack:
        !          1249:        sp@, (sp) or (%sp) depending on the style of syntax.
        !          1250:    '#' for an immediate operand prefix (# in MIT and Motorola syntax
        !          1251:        but & in SGS syntax).
        !          1252:    '!' for the cc register (used in an `and to cc' insn).
        !          1253: 
        !          1254:    'w' for FPA insn (print a CONST_DOUBLE as a SunFPA constant rather
        !          1255:        than directly).  Second part of 'y' below.
        !          1256:    'x' for float insn (print a CONST_DOUBLE as a float rather than in hex),
        !          1257:        or print pair of registers as rx:ry.
        !          1258:    'y' for a FPA insn (print pair of registers as rx:ry).  This also outputs
        !          1259:        CONST_DOUBLE's as SunFPA constant RAM registers if
        !          1260:        possible, so it should not be used except for the SunFPA. */
        !          1261: 
        !          1262: #define PRINT_OPERAND(FILE, X, CODE)  \
        !          1263: { int i;                                                               \
        !          1264:   if (CODE == '.') ;                                                   \
        !          1265:   else if (CODE == '#') fprintf (FILE, "#");                           \
        !          1266:   else if (CODE == '-') fprintf (FILE, "sp@-");                                \
        !          1267:   else if (CODE == '+') fprintf (FILE, "sp@+");                                \
        !          1268:   else if (CODE == 's') fprintf (FILE, "sp@");                         \
        !          1269:   else if (CODE == '!') fprintf (FILE, "cc");                          \
        !          1270:   else if ((X)  == 0  ) ;                                              \
        !          1271:   else if (GET_CODE (X) == REG)                                                \
        !          1272:     { if (REGNO (X) < 16 && (CODE == 'y' || CODE == 'x') && GET_MODE (X) == DFmode)    \
        !          1273:         fprintf (FILE, "%s,%s", reg_name [REGNO (X)], reg_name [REGNO (X)+1]); \
        !          1274:       else                                                             \
        !          1275:         fprintf (FILE, "%s", reg_name[REGNO (X)]);                     \
        !          1276:     }                                                                  \
        !          1277:   else if (GET_CODE (X) == MEM)                                                \
        !          1278:     output_address (XEXP (X, 0));                                      \
        !          1279:   else if ((CODE == 'y' || CODE == 'w')                                        \
        !          1280:           && GET_CODE(X) == CONST_DOUBLE                               \
        !          1281:           && (i = standard_SunFPA_constant_p (X)))                     \
        !          1282:     fprintf(FILE, "%%%d", i & 0x1ff);                                  \
        !          1283:   else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode)     \
        !          1284:     { union { double d; int i[2]; } u;                                 \
        !          1285:       union { float f; int i; } u1;                                    \
        !          1286:       u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X);   \
        !          1287:       u1.f = u.d;                                                      \
        !          1288:       if (CODE == 'f')                                                 \
        !          1289:         fprintf (FILE, "#0r%.9g", u1.f);                               \
        !          1290:       else                                                             \
        !          1291:         fprintf (FILE, "#0x%x", u1.i[0]); }                            \
        !          1292:   else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != DImode)     \
        !          1293:     { union { double d; int i[2]; } u;                                 \
        !          1294:       u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X);   \
        !          1295:       fprintf (FILE, "#0r%.20g", u.d); }                               \
        !          1296:   else { putc ('#', FILE); output_addr_const (FILE, X); }}
        !          1297: 
        !          1298: /* Note that this contains a kludge that knows that the only reason
        !          1299:    we have an address (plus (label_ref...) (reg...))
        !          1300:    is in the insn before a tablejump, and we know that m68k.md
        !          1301:    generates a label LInnn: on such an insn.  */
        !          1302: #define PRINT_OPERAND_ADDRESS(FILE, ADDR)  \
        !          1303: { register rtx reg1, reg2, breg, ireg;                                 \
        !          1304:   register rtx addr = ADDR;                                            \
        !          1305:   static char *sz = ".BW.L...D";                                       \
        !          1306:   rtx offset;                                                          \
        !          1307:   switch (GET_CODE (addr))                                             \
        !          1308:     {                                                                  \
        !          1309:     case REG:                                                          \
        !          1310:       fprintf (FILE, "%s@", reg_name [REGNO (addr)]);                  \
        !          1311:       break;                                                           \
        !          1312:     case PRE_DEC:                                                      \
        !          1313:       fprintf (FILE, "%s@-", reg_name [REGNO (XEXP (addr, 0))]);       \
        !          1314:       break;                                                           \
        !          1315:     case POST_INC:                                                     \
        !          1316:       fprintf (FILE, "%s@+", reg_name [REGNO (XEXP (addr, 0))]);       \
        !          1317:       break;                                                           \
        !          1318:     case PLUS:                                                         \
        !          1319:       reg1 = 0;        reg2 = 0;                                               \
        !          1320:       ireg = 0;        breg = 0;                                               \
        !          1321:       offset = 0;                                                      \
        !          1322:       if (CONSTANT_ADDRESS_P (XEXP (addr, 0)))                         \
        !          1323:        {                                                               \
        !          1324:          offset = XEXP (addr, 0);                                      \
        !          1325:          addr = XEXP (addr, 1);                                        \
        !          1326:        }                                                               \
        !          1327:       else if (CONSTANT_ADDRESS_P (XEXP (addr, 1)))                    \
        !          1328:        {                                                               \
        !          1329:          offset = XEXP (addr, 1);                                      \
        !          1330:          addr = XEXP (addr, 0);                                        \
        !          1331:        }                                                               \
        !          1332:       if (GET_CODE (addr) != PLUS) ;                                   \
        !          1333:       else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND)               \
        !          1334:        {                                                               \
        !          1335:          reg1 = XEXP (addr, 0);                                        \
        !          1336:          addr = XEXP (addr, 1);                                        \
        !          1337:        }                                                               \
        !          1338:       else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND)               \
        !          1339:        {                                                               \
        !          1340:          reg1 = XEXP (addr, 1);                                        \
        !          1341:          addr = XEXP (addr, 0);                                        \
        !          1342:        }                                                               \
        !          1343:       else if (GET_CODE (XEXP (addr, 0)) == MULT)                      \
        !          1344:        {                                                               \
        !          1345:          reg1 = XEXP (addr, 0);                                        \
        !          1346:          addr = XEXP (addr, 1);                                        \
        !          1347:        }                                                               \
        !          1348:       else if (GET_CODE (XEXP (addr, 1)) == MULT)                      \
        !          1349:        {                                                               \
        !          1350:          reg1 = XEXP (addr, 1);                                        \
        !          1351:          addr = XEXP (addr, 0);                                        \
        !          1352:        }                                                               \
        !          1353:       else if (GET_CODE (XEXP (addr, 0)) == REG)                       \
        !          1354:        {                                                               \
        !          1355:          reg1 = XEXP (addr, 0);                                        \
        !          1356:          addr = XEXP (addr, 1);                                        \
        !          1357:        }                                                               \
        !          1358:       else if (GET_CODE (XEXP (addr, 1)) == REG)                       \
        !          1359:        {                                                               \
        !          1360:          reg1 = XEXP (addr, 1);                                        \
        !          1361:          addr = XEXP (addr, 0);                                        \
        !          1362:        }                                                               \
        !          1363:       if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT            \
        !          1364:          || GET_CODE (addr) == SIGN_EXTEND)                            \
        !          1365:        { if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; }     \
        !          1366: /*  for OLD_INDEXING                                                   \
        !          1367:       else if (GET_CODE (addr) == PLUS)                                        \
        !          1368:        {                                                               \
        !          1369:          if (GET_CODE (XEXP (addr, 0)) == REG)                         \
        !          1370:            {                                                           \
        !          1371:              reg2 = XEXP (addr, 0);                                    \
        !          1372:              addr = XEXP (addr, 1);                                    \
        !          1373:            }                                                           \
        !          1374:          else if (GET_CODE (XEXP (addr, 1)) == REG)                    \
        !          1375:            {                                                           \
        !          1376:              reg2 = XEXP (addr, 1);                                    \
        !          1377:              addr = XEXP (addr, 0);                                    \
        !          1378:            }                                                           \
        !          1379:        }                                                               \
        !          1380:   */                                                                   \
        !          1381:       if (offset != 0) { if (addr != 0) abort (); addr = offset; }     \
        !          1382:       if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND                     \
        !          1383:                    || GET_CODE (reg1) == MULT))                        \
        !          1384:          || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2))))         \
        !          1385:        { breg = reg2; ireg = reg1; }                                   \
        !          1386:       else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1)))                \
        !          1387:        { breg = reg1; ireg = reg2; }                                   \
        !          1388:       if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF)      \
        !          1389:         { int scale = 1;                                               \
        !          1390:          if (GET_CODE (ireg) == MULT)                                  \
        !          1391:            { scale = INTVAL (XEXP (ireg, 1));                          \
        !          1392:              ireg = XEXP (ireg, 0); }                                  \
        !          1393:          if (GET_CODE (ireg) == SIGN_EXTEND)                           \
        !          1394:            fprintf (FILE, "pc@(L%d-LI%d-2:B)[%s:W",                    \
        !          1395:                     CODE_LABEL_NUMBER (XEXP (addr, 0)),                \
        !          1396:                     CODE_LABEL_NUMBER (XEXP (addr, 0)),                \
        !          1397:                     reg_name[REGNO (XEXP (ireg, 0))]);                 \
        !          1398:          else                                                          \
        !          1399:            fprintf (FILE, "pc@(L%d-LI%d-2:B)[%s:L",                    \
        !          1400:                     CODE_LABEL_NUMBER (XEXP (addr, 0)),                \
        !          1401:                     CODE_LABEL_NUMBER (XEXP (addr, 0)),                \
        !          1402:                     reg_name[REGNO (ireg)]);                           \
        !          1403:          fprintf (FILE, ":%c", sz[scale]);                             \
        !          1404:          putc (']', FILE);                                             \
        !          1405:          break; }                                                      \
        !          1406:       if (breg != 0 && ireg == 0 && GET_CODE (addr) == LABEL_REF)      \
        !          1407:         { fprintf (FILE, "pc@(L%d-LI%d-2:B)[%s:L:B]",                  \
        !          1408:                   CODE_LABEL_NUMBER (XEXP (addr, 0)),                  \
        !          1409:                   CODE_LABEL_NUMBER (XEXP (addr, 0)),                  \
        !          1410:                   reg_name[REGNO (breg)]);                             \
        !          1411:          break; }                                                      \
        !          1412:       if (ireg != 0 || breg != 0)                                      \
        !          1413:        { int scale = 1;                                                \
        !          1414:          if (breg == 0)                                                \
        !          1415:            abort ();                                                   \
        !          1416:          if (addr && GET_CODE (addr) == LABEL_REF) abort ();           \
        !          1417:          fprintf (FILE, "%s@", reg_name[REGNO (breg)]);                \
        !          1418:          if (addr != 0) {                                              \
        !          1419:             putc( '(', FILE );                                         \
        !          1420:            output_addr_const (FILE, addr);                             \
        !          1421:             if (ireg != 0) {                                           \
        !          1422:               if (GET_CODE(addr) == CONST_INT) {                       \
        !          1423:                 int size_of = 1, val = INTVAL(addr);                   \
        !          1424:                 if (val < -0x8000 || val >= 0x8000)                    \
        !          1425:                    size_of = 4;                                        \
        !          1426:                 else if (val < -0x80 || val >= 0x80)                   \
        !          1427:                    size_of = 2;                                                \
        !          1428:                 fprintf(FILE, ":%c", sz[size_of]);                     \
        !          1429:               }                                                                \
        !          1430:               else                                                     \
        !          1431:                 fprintf(FILE, ":L"); }                                         \
        !          1432:             putc( ')', FILE ); }                                       \
        !          1433:          if (ireg != 0) {                                              \
        !          1434:            putc ('[', FILE);                                           \
        !          1435:            if (ireg != 0 && GET_CODE (ireg) == MULT)                   \
        !          1436:              { scale = INTVAL (XEXP (ireg, 1));                        \
        !          1437:                ireg = XEXP (ireg, 0); }                                \
        !          1438:            if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND)            \
        !          1439:              fprintf (FILE, "%s:W", reg_name[REGNO (XEXP (ireg, 0))]); \
        !          1440:            else if (ireg != 0)                                         \
        !          1441:              fprintf (FILE, "%s:L", reg_name[REGNO (ireg)]);           \
        !          1442:            fprintf (FILE, ":%c", sz[scale]);                           \
        !          1443:            putc (']', FILE);                                           \
        !          1444:           }                                                            \
        !          1445:          break;                                                        \
        !          1446:        }                                                               \
        !          1447:       else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF)              \
        !          1448:        { fprintf (FILE, "pc@(L%d-LI%d-2:B)[%s:L:B]",                   \
        !          1449:                   CODE_LABEL_NUMBER (XEXP (addr, 0)),                  \
        !          1450:                   CODE_LABEL_NUMBER (XEXP (addr, 0)),                  \
        !          1451:                   reg_name[REGNO (reg1)]);                             \
        !          1452:          break; }                                                      \
        !          1453:     default:                                                           \
        !          1454:       if (GET_CODE (addr) == CONST_INT                                 \
        !          1455:          && INTVAL (addr) < 0x8000                                     \
        !          1456:          && INTVAL (addr) >= -0x8000)                                  \
        !          1457:        fprintf (FILE, "%d:W", INTVAL (addr));                          \
        !          1458:       else                                                             \
        !          1459:         output_addr_const (FILE, addr);                                        \
        !          1460:     }}
        !          1461: 
        !          1462: /*
        !          1463: Local variables:
        !          1464: version-control: t
        !          1465: End:
        !          1466: */
        !          1467: /* See tm-m68k.h.  3 means 68020 with 68881.  */
        !          1468: 
        !          1469: #define TARGET_DEFAULT 3
        !          1470: 
        !          1471: /* Define __HAVE_FPA__ or __HAVE_68881__ in preprocessor,
        !          1472:    according to the -m flags.
        !          1473:    This will control the use of inline 68881 insns in certain macros.
        !          1474:    Also inform the program which CPU this is for.  */
        !          1475: 
        !          1476: #if TARGET_DEFAULT & 02
        !          1477: 
        !          1478: /* -m68881 is the default */
        !          1479: #define CPP_SPEC \
        !          1480: "%{!msoft-float:%{mfpa:-D__HAVE_FPA__ }%{!mfpa:-D__HAVE_68881__ }}\
        !          1481: %{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}"
        !          1482: 
        !          1483: #else
        !          1484: #if TARGET_DEFAULT & 0100
        !          1485: 
        !          1486: /* -mfpa is the default */
        !          1487: #define CPP_SPEC \
        !          1488: "%{!msoft-float:%{m68881:-D__HAVE_68881__ }%{!m68881:-D__HAVE_FPA__ }}\
        !          1489: %{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}"
        !          1490: 
        !          1491: #else
        !          1492: 
        !          1493: /* -msoft-float is the default */
        !          1494: #define CPP_SPEC \
        !          1495: "%{m68881:-D__HAVE_68881__ }%{mfpa:-D__HAVE_FPA__ }\
        !          1496: %{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}"
        !          1497: 
        !          1498: #endif
        !          1499: #endif
        !          1500: 
        !          1501: /* Names to predefine in the preprocessor for this target machine.  */
        !          1502: 
        !          1503: #define CPP_PREDEFINES "-Dmc68000 -Dalliant -Dunix"
        !          1504: 
        !          1505: /* Every structure or union's size must be a multiple of 2 bytes.  */
        !          1506: 
        !          1507: #define STRUCTURE_SIZE_BOUNDARY 16
        !          1508: 
        !          1509: /* This is BSD, so it wants DBX format.  */
        !          1510: 
        !          1511: #define DBX_DEBUGGING_INFO

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.