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

1.1     ! root        1: /* Definitions of target machine for GNU compiler.  Alliant FX version.
        !             2:    Copyright (C) 1989 Free Software Foundation, Inc.
        !             3:    Adapted from tm-m68k.h by Paul Petersen ([email protected])
        !             4:    and Joe Weening ([email protected]).
        !             5: 
        !             6: This file is part of GNU CC.
        !             7: 
        !             8: GNU CC is free software; you can redistribute it and/or modify
        !             9: it under the terms of the GNU General Public License as published by
        !            10: the Free Software Foundation; either version 1, or (at your option)
        !            11: any later version.
        !            12: 
        !            13: GNU CC is distributed in the hope that it will be useful,
        !            14: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            15: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            16: GNU General Public License for more details.
        !            17: 
        !            18: You should have received a copy of the GNU General Public License
        !            19: along with GNU CC; see the file COPYING.  If not, write to
        !            20: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            21: 
        !            22: 
        !            23: /* This file is based on tm-m68k.h, simplified by removing support for
        !            24:    the Sun FPA and other things not applicable to the Alliant.  Some
        !            25:    remnants of these features remain.  */
        !            26: 
        !            27: /* Names to predefine in the preprocessor for this target machine.  */
        !            28: 
        !            29: #define CPP_PREDEFINES "-Dmc68000 -Dalliant -Dunix"
        !            30: 
        !            31: /* Print subsidiary information on the compiler version in use.  */
        !            32: 
        !            33: #define TARGET_VERSION fprintf (stderr, " (Alliant)");
        !            34: 
        !            35: /* Run-time compilation parameters selecting different hardware
        !            36:    subsets.  The Alliant IP is an mc68020.  (Older mc68010-based IPs
        !            37:    are no longer supported.)  The Alliant CE is 68020-compatible, and
        !            38:    also has floating point, vector and concurrency instructions.
        !            39: 
        !            40:    Although the IP doesn't have floating point, it emulates it in the
        !            41:    operating system.  Using this generally is faster than running code
        !            42:    compiled with -msoft-float, because the soft-float code still uses
        !            43:    (simulated) FP registers and ends up emulating several fmove{s,d}
        !            44:    instructions per call.  So I don't recommend using soft-float for
        !            45:    any Alliant code.  -- JSW
        !            46: */
        !            47: 
        !            48: extern int target_flags;
        !            49: 
        !            50: /* Macros used in the machine description to test the flags.  */
        !            51: 
        !            52: /* Compile for a 68020 (not a 68000 or 68010).  */
        !            53: #define TARGET_68020 (target_flags & 1)
        !            54: /* Compile CE insns for floating point (not library calls).  */
        !            55: #define TARGET_CE (target_flags & 2)
        !            56: /* Compile using 68020 bitfield insns.  */
        !            57: #define TARGET_BITFIELD (target_flags & 4)
        !            58: /* Compile with 16-bit `int'.  */
        !            59: #define TARGET_SHORT (target_flags & 040)
        !            60: 
        !            61: /* Default 3 means compile 68020 and CE instructions.  We don't use
        !            62:    bitfield instructions because there appears to be a bug in the
        !            63:    implementation of bfins on the CE.  */
        !            64: 
        !            65: #define TARGET_DEFAULT 3
        !            66: 
        !            67: /* Define __HAVE_CE__ in preprocessor according to the -m flags.
        !            68:    This will control the use of inline FP insns in certain macros.
        !            69:    Also inform the program which CPU this is for.  */
        !            70: 
        !            71: #if TARGET_DEFAULT & 02
        !            72: 
        !            73: /* -mce is the default */
        !            74: #define CPP_SPEC \
        !            75: "%{!msoft-float:-D__HAVE_CE__ }\
        !            76: %{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}"
        !            77: 
        !            78: #else
        !            79: 
        !            80: /* -msoft-float is the default */
        !            81: #define CPP_SPEC \
        !            82: "%{mce:-D__HAVE_CE__ }\
        !            83: %{m68000:-Dmc68010}%{mc68000:-Dmc68010}%{!mc68000:%{!m68000:-Dmc68020}}"
        !            84: 
        !            85: #endif
        !            86: 
        !            87: /* Every structure or union's size must be a multiple of 2 bytes.  */
        !            88: 
        !            89: #define STRUCTURE_SIZE_BOUNDARY 16
        !            90: 
        !            91: /* This is BSD, so it wants DBX format.  */
        !            92: 
        !            93: #define DBX_DEBUGGING_INFO
        !            94: 
        !            95: /* Macro to define tables used to set the flags.
        !            96:    This is a list in braces of pairs in braces,
        !            97:    each pair being { "NAME", VALUE }
        !            98:    where VALUE is the bits to set or minus the bits to clear.
        !            99:    An empty string NAME is used to identify the default VALUE.  */
        !           100: 
        !           101: #define TARGET_SWITCHES  \
        !           102:   { { "68020", 5},                             \
        !           103:     { "c68020", 5},                            \
        !           104:     { "bitfield", 4},                          \
        !           105:     { "68000", -7},                            \
        !           106:     { "c68000", -7},                           \
        !           107:     { "soft-float", -2},                       \
        !           108:     { "nobitfield", -4},                       \
        !           109:     { "short", 040},                           \
        !           110:     { "noshort", -040},                                \
        !           111:     { "", TARGET_DEFAULT}}
        !           112: 
        !           113: /* target machine storage layout */
        !           114: 
        !           115: /* Define this if most significant bit is lowest numbered
        !           116:    in instructions that operate on numbered bit-fields.
        !           117:    This is true for 68020 insns such as bfins and bfexts.
        !           118:    We make it true always by avoiding using the single-bit insns
        !           119:    except in special cases with constant bit numbers.  */
        !           120: #define BITS_BIG_ENDIAN
        !           121: 
        !           122: /* Define this if most significant byte of a word is the lowest numbered.  */
        !           123: /* That is true on the 68000.  */
        !           124: #define BYTES_BIG_ENDIAN
        !           125: 
        !           126: /* Define this if most significant word of a multiword number is numbered.  */
        !           127: /* For 68000 we can decide arbitrarily
        !           128:    since there are no machine instructions for them.  */
        !           129: /* #define WORDS_BIG_ENDIAN */
        !           130: 
        !           131: /* number of bits in an addressible storage unit */
        !           132: #define BITS_PER_UNIT 8
        !           133: 
        !           134: /* Width in bits of a "word", which is the contents of a machine register.
        !           135:    Note that this is not necessarily the width of data type `int';
        !           136:    if using 16-bit ints on a 68000, this would still be 32.
        !           137:    But on a machine with 16-bit registers, this would be 16.  */
        !           138: #define BITS_PER_WORD 32
        !           139: 
        !           140: /* Width of a word, in units (bytes).  */
        !           141: #define UNITS_PER_WORD 4
        !           142: 
        !           143: /* Width in bits of a pointer.
        !           144:    See also the macro `Pmode' defined below.  */
        !           145: #define POINTER_SIZE 32
        !           146: 
        !           147: /* Allocation boundary (in *bits*) for storing pointers in memory.  */
        !           148: #define POINTER_BOUNDARY 16
        !           149: 
        !           150: /* Allocation boundary (in *bits*) for storing arguments in argument list.  */
        !           151: #define PARM_BOUNDARY (TARGET_SHORT ? 16 : 32)
        !           152: 
        !           153: /* Boundary (in *bits*) on which stack pointer should be aligned.  */
        !           154: #define STACK_BOUNDARY 16
        !           155: 
        !           156: /* Allocation boundary (in *bits*) for the code of a function.  */
        !           157: #define FUNCTION_BOUNDARY 16
        !           158: 
        !           159: /* Alignment of field after `int : 0' in a structure.  */
        !           160: #define EMPTY_FIELD_BOUNDARY 16
        !           161: 
        !           162: /* No data type wants to be aligned rounder than this.  */
        !           163: #define BIGGEST_ALIGNMENT 16
        !           164: 
        !           165: /* Define this if move instructions will actually fail to work
        !           166:    when given unaligned data.  */
        !           167: #define STRICT_ALIGNMENT
        !           168: 
        !           169: /* Define number of bits in most basic integer type.
        !           170:    (If undefined, default is BITS_PER_WORD).  */
        !           171: 
        !           172: #define INT_TYPE_SIZE (TARGET_SHORT ? 16 : 32)
        !           173: 
        !           174: /* Standard register usage.  */
        !           175: 
        !           176: /* Number of actual hardware registers.
        !           177:    The hardware registers are assigned numbers for the compiler
        !           178:    from 0 to just below FIRST_PSEUDO_REGISTER.
        !           179:    All registers that the compiler knows about must be given numbers,
        !           180:    even those that are not normally considered general registers.
        !           181:    For the Alliant, we give the data registers numbers 0-7,
        !           182:    the address registers numbers 010-017,
        !           183:    and the floating point registers numbers 020-027.  */
        !           184: #define FIRST_PSEUDO_REGISTER 24
        !           185: 
        !           186: /* 1 for registers that have pervasive standard uses
        !           187:    and are not available for the register allocator.
        !           188:    On the Alliant, these are a0 (argument pointer),
        !           189:    a6 (frame pointer) and a7 (stack pointer).  */
        !           190: #define FIXED_REGISTERS  \
        !           191:  {0, 0, 0, 0, 0, 0, 0, 0, \
        !           192:   1, 0, 0, 0, 0, 0, 1, 1, \
        !           193:   0, 0, 0, 0, 0, 0, 0, 0  }
        !           194: 
        !           195: /* 1 for registers not available across function calls.
        !           196:    These must include the FIXED_REGISTERS and also any
        !           197:    registers that can be used without being saved.
        !           198:    The latter must include the registers where values are returned
        !           199:    and the register where structure-value addresses are passed.
        !           200:    Aside from that, you can include as many other registers as you like.
        !           201:    The Alliant calling sequence allows a function to use any register,
        !           202:    so we include them all here.  */
        !           203: 
        !           204: #define CALL_USED_REGISTERS \
        !           205:  {1, 1, 1, 1, 1, 1, 1, 1, \
        !           206:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           207:   1, 1, 1, 1, 1, 1, 1, 1  }
        !           208: 
        !           209: /* Return number of consecutive hard regs needed starting at reg REGNO
        !           210:    to hold something of mode MODE.
        !           211:    This is ordinarily the length in words of a value of mode MODE
        !           212:    but can be less for certain modes in special long registers.
        !           213: 
        !           214:    On the Alliant, ordinary registers hold 32 bits worth;
        !           215:    for the FP registers, a single register is always enough for
        !           216:    anything that can be stored in them at all.  */
        !           217: #define HARD_REGNO_NREGS(REGNO, MODE)   \
        !           218:   ((REGNO) >= 16 ? 1                           \
        !           219:    : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           220: 
        !           221: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
        !           222:    On the Alliant, the cpu registers can hold any mode but the FP registers
        !           223:    can hold only SFmode or DFmode.  */
        !           224: #define HARD_REGNO_MODE_OK(REGNO, MODE)                \
        !           225:   ((REGNO) < 16 || (MODE) == SFmode || (MODE) == DFmode)
        !           226: 
        !           227: /* Value is 1 if it is a good idea to tie two pseudo registers
        !           228:    when one has mode MODE1 and one has mode MODE2.
        !           229:    If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
        !           230:    for any hard reg, then this must be 0 for correct output.  */
        !           231: #define MODES_TIEABLE_P(MODE1, MODE2)                  \
        !           232:    (((MODE1) == SFmode || (MODE1) == DFmode)           \
        !           233:        == ((MODE2) == SFmode || (MODE2) == DFmode))
        !           234: 
        !           235: /* Specify the registers used for certain standard purposes.
        !           236:    The values of these macros are register numbers.  */
        !           237: 
        !           238: /* m68000 pc isn't overloaded on a register.  */
        !           239: /* #define PC_REGNUM  */
        !           240: 
        !           241: /* Register to use for pushing function arguments.  */
        !           242: #define STACK_POINTER_REGNUM 15
        !           243: 
        !           244: /* Base register for access to local variables of the function.  */
        !           245: #define FRAME_POINTER_REGNUM 14
        !           246: 
        !           247: /* Value should be nonzero if functions must have frame pointers.
        !           248:    Zero means the frame pointer need not be set up (and parms
        !           249:    may be accessed via the stack pointer) in functions that seem suitable.
        !           250:    This is computed in `reload', in reload1.c.  */
        !           251: /* Set for now on Alliant until we find a way to make this work with
        !           252:    their calling sequence.  */
        !           253: #define FRAME_POINTER_REQUIRED 1
        !           254: 
        !           255: /* Base register for access to arguments of the function.  */
        !           256: #define ARG_POINTER_REGNUM  8 
        !           257: 
        !           258: /* Register in which static-chain is passed to a function.  */
        !           259: #define STATIC_CHAIN_REGNUM 8
        !           260: 
        !           261: /* Register in which address to store a structure value
        !           262:    is passed to a function.  */
        !           263: #define STRUCT_VALUE_REGNUM 9
        !           264: 
        !           265: /* Define the classes of registers for register constraints in the
        !           266:    machine description.  Also define ranges of constants.
        !           267: 
        !           268:    One of the classes must always be named ALL_REGS and include all hard regs.
        !           269:    If there is more than one class, another class must be named NO_REGS
        !           270:    and contain no registers.
        !           271: 
        !           272:    The name GENERAL_REGS must be the name of a class (or an alias for
        !           273:    another name such as ALL_REGS).  This is the class of registers
        !           274:    that is allowed by "g" or "r" in a register constraint.
        !           275:    Also, registers outside this class are allocated only when
        !           276:    instructions express preferences for them.
        !           277: 
        !           278:    The classes must be numbered in nondecreasing order; that is,
        !           279:    a larger-numbered class must never be contained completely
        !           280:    in a smaller-numbered class.
        !           281: 
        !           282:    For any two classes, it is very desirable that there be another
        !           283:    class that represents their union.  */
        !           284: 
        !           285: /* The Alliant has three kinds of registers, so eight classes would be
        !           286:    a complete set.  One of them is not needed.  */
        !           287: 
        !           288: enum reg_class { NO_REGS, FP_REGS, DATA_REGS, DATA_OR_FP_REGS,
        !           289:   ADDR_REGS, GENERAL_REGS, ALL_REGS, LIM_REG_CLASSES };
        !           290: 
        !           291: #define N_REG_CLASSES (int) LIM_REG_CLASSES
        !           292: 
        !           293: /* Give names of register classes as strings for dump file.   */
        !           294: 
        !           295: #define REG_CLASS_NAMES \
        !           296:  { "NO_REGS", "FP_REGS", "DATA_REGS", "DATA_OR_FP_REGS",  \
        !           297:    "ADDR_REGS", "GENERAL_REGS", "ALL_REGS" }
        !           298: 
        !           299: /* Define which registers fit in which classes.
        !           300:    This is an initializer for a vector of HARD_REG_SET
        !           301:    of length N_REG_CLASSES.  */
        !           302: 
        !           303: #define REG_CLASS_CONTENTS \
        !           304: {                                      \
        !           305:  0,            /* NO_REGS */           \
        !           306:  0x00ff0000,   /* FP_REGS */           \
        !           307:  0x000000ff,   /* DATA_REGS */         \
        !           308:  0x00ff00ff,   /* DATA_OR_FP_REGS */   \
        !           309:  0x0000ff00,   /* ADDR_REGS */         \
        !           310:  0x0000ffff,   /* GENERAL_REGS */      \
        !           311:  0x00ffffff    /* ALL_REGS */          \
        !           312: }
        !           313: 
        !           314: /* The same information, inverted:
        !           315:    Return the class number of the smallest class containing
        !           316:    reg number REGNO.  This could be a conditional expression
        !           317:    or could index an array.  */
        !           318: 
        !           319: extern enum reg_class regno_reg_class[];
        !           320: #define REGNO_REG_CLASS(REGNO) (regno_reg_class[(REGNO)>>3])
        !           321: 
        !           322: /* The class value for index registers, and the one for base regs.  */
        !           323: 
        !           324: #define INDEX_REG_CLASS GENERAL_REGS
        !           325: #define BASE_REG_CLASS ADDR_REGS
        !           326: 
        !           327: /* Get reg_class from a letter such as appears in the machine description.  */
        !           328: 
        !           329: #define REG_CLASS_FROM_LETTER(C) \
        !           330:   ((C) == 'a' ? ADDR_REGS :                    \
        !           331:    ((C) == 'd' ? DATA_REGS :                   \
        !           332:     ((C) == 'f' ? FP_REGS :                    \
        !           333:      NO_REGS)))
        !           334: 
        !           335: /* The letters I, J, K, L and M in a register constraint string
        !           336:    can be used to stand for particular ranges of immediate operands.
        !           337:    This macro defines what the ranges are.
        !           338:    C is the letter, and VALUE is a constant value.
        !           339:    Return 1 if VALUE is in the range specified by C.
        !           340: 
        !           341:    For the 68000, `I' is used for the range 1 to 8
        !           342:    allowed as immediate shift counts and in addq.
        !           343:    `J' is used for the range of signed numbers that fit in 16 bits.
        !           344:    `K' is for numbers that moveq can't handle.
        !           345:    `L' is for range -8 to -1, range of values that can be added with subq.  */
        !           346: 
        !           347: #define CONST_OK_FOR_LETTER_P(VALUE, C)  \
        !           348:   ((C) == 'I' ? (VALUE) > 0 && (VALUE) <= 8 :    \
        !           349:    (C) == 'J' ? (VALUE) >= -0x8000 && (VALUE) <= 0x7FFF :      \
        !           350:    (C) == 'K' ? (VALUE) < -0x80 || (VALUE) >= 0x80 :   \
        !           351:    (C) == 'L' ? (VALUE) < 0 && (VALUE) >= -8 : 0)
        !           352: 
        !           353: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C)  0
        !           354: 
        !           355: /* Given an rtx X being reloaded into a reg required to be
        !           356:    in class CLASS, return the class of reg to actually use.
        !           357:    In general this is just CLASS; but on some machines
        !           358:    in some cases it is preferable to use a more restrictive class.
        !           359:    On the 68000 series, use a data reg if possible when the
        !           360:    value is a constant in the range where moveq could be used
        !           361:    and we ensure that QImodes are reloaded into data regs.  */
        !           362: 
        !           363: #define PREFERRED_RELOAD_CLASS(X,CLASS)  \
        !           364:   ((GET_CODE (X) == CONST_INT                  \
        !           365:     && (unsigned) (INTVAL (X) + 0x80) < 0x100  \
        !           366:     && (CLASS) != ADDR_REGS)                   \
        !           367:    ? DATA_REGS                                 \
        !           368:    : GET_MODE (X) == QImode                    \
        !           369:    ? DATA_REGS                                 \
        !           370:    : (CLASS))
        !           371: 
        !           372: /* Return the maximum number of consecutive registers
        !           373:    needed to represent mode MODE in a register of class CLASS.  */
        !           374: /* On the 68000, this is the size of MODE in words,
        !           375:    except in the FP regs, where a single reg is always enough.  */
        !           376: #define CLASS_MAX_NREGS(CLASS, MODE)   \
        !           377:  ((CLASS) == FP_REGS ? 1 \
        !           378:   : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           379: 
        !           380: /* Stack layout; function entry, exit and calling.  */
        !           381: 
        !           382: /* Define this if pushing a word on the stack
        !           383:    makes the stack pointer a smaller address.  */
        !           384: #define STACK_GROWS_DOWNWARD
        !           385: 
        !           386: /* Define this if the nominal address of the stack frame
        !           387:    is at the high-address end of the local variables;
        !           388:    that is, each additional local variable allocated
        !           389:    goes at a more negative offset in the frame.  */
        !           390: #define FRAME_GROWS_DOWNWARD
        !           391: 
        !           392: /* The Alliant uses -fcaller-saves by default.  */
        !           393: #define DEFAULT_CALLER_SAVES
        !           394: 
        !           395: /* Offset within stack frame to start allocating local variables at.
        !           396:    If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
        !           397:    first local allocated.  Otherwise, it is the offset to the BEGINNING
        !           398:    of the first local allocated.  */
        !           399: #define STARTING_FRAME_OFFSET -4
        !           400: 
        !           401: /* If we generate an insn to push BYTES bytes,
        !           402:    this says how many the stack pointer really advances by.
        !           403:    On the 68000, sp@- in a byte insn really pushes a word.  */
        !           404: #define PUSH_ROUNDING(BYTES) (((BYTES) + 1) & ~1)
        !           405: 
        !           406: /* Offset of first parameter from the argument pointer register value.  */
        !           407: #define FIRST_PARM_OFFSET(FNDECL) 0
        !           408: 
        !           409: /* Value is 1 if returning from a function call automatically
        !           410:    pops the arguments described by the number-of-args field in the call.
        !           411:    FUNTYPE is the data type of the function (as a tree),
        !           412:    or for a library call it is an identifier node for the subroutine name.
        !           413: 
        !           414:    On the Alliant we define this as 1 and make the calling sequence
        !           415:    (in alliant.md) pop the args.  This wouldn't be necessary if we
        !           416:    could add to the pending stack adjustment the size of the argument
        !           417:    descriptors that are pushed after the arguments.  */
        !           418: 
        !           419: #define RETURN_POPS_ARGS(FUNTYPE) 1
        !           420: 
        !           421: /* Define how to find the value returned by a function.
        !           422:    VALTYPE is the data type of the value (as a tree).
        !           423:    If the precise function being called is known, FUNC is its FUNCTION_DECL;
        !           424:    otherwise, FUNC is 0.  */
        !           425: 
        !           426: /* On the Alliant the return value is in FP0 if real, else D0.  */
        !           427: 
        !           428: #define FUNCTION_VALUE(VALTYPE, FUNC)  \
        !           429:   (TREE_CODE (VALTYPE) == REAL_TYPE \
        !           430:    ? gen_rtx (REG, TYPE_MODE (VALTYPE), 16) \
        !           431:    : gen_rtx (REG, TYPE_MODE (VALTYPE), 0))
        !           432: 
        !           433: /* Define how to find the value returned by a library function
        !           434:    assuming the value has mode MODE.  */
        !           435: 
        !           436: /* On the Alliant the return value is in FP0 if real, else D0.  The
        !           437:    Alliant library functions for floating-point emulation return their
        !           438:    values both in FP0 and in D0/D1.  But since not all gnulib functions
        !           439:    return the results of these directly, we cannot assume that D0/D1
        !           440:    contain the values we expect on return from a gnulib function.  */
        !           441: 
        !           442: #define LIBCALL_VALUE(MODE)  \
        !           443:   (((MODE) == DFmode || (MODE) == SFmode) \
        !           444:    ? gen_rtx (REG, MODE, 16) \
        !           445:    : gen_rtx (REG, MODE, 0))
        !           446: 
        !           447: /* 1 if N is a possible register number for a function value.
        !           448:    On the Alliant, D0 and FP0 are the only registers thus used.
        !           449:    (No need to mention D1 when used as a pair with D0.)  */
        !           450: 
        !           451: #define FUNCTION_VALUE_REGNO_P(N) (((N) & ~16) == 0)
        !           452: 
        !           453: /* Define this if PCC uses the nonreentrant convention for returning
        !           454:    structure and union values.  */
        !           455: 
        !           456: #define PCC_STATIC_STRUCT_RETURN
        !           457: 
        !           458: /* 1 if N is a possible register number for function argument passing.
        !           459:    On the Alliant, no registers are used in this way.  */
        !           460: 
        !           461: #define FUNCTION_ARG_REGNO_P(N) 0
        !           462: 
        !           463: /* Define a data type for recording info about an argument list
        !           464:    during the scan of that argument list.  This data type should
        !           465:    hold all necessary information about the function itself
        !           466:    and about the args processed so far, enough to enable macros
        !           467:    such as FUNCTION_ARG to determine where the next arg should go.
        !           468: 
        !           469:    On the Alliant, this is a single integer, which is a number of bytes
        !           470:    of arguments scanned so far.  */
        !           471: 
        !           472: #define CUMULATIVE_ARGS int
        !           473: 
        !           474: /* Initialize a variable CUM of type CUMULATIVE_ARGS
        !           475:    for a call to a function whose data type is FNTYPE.
        !           476:    For a library call, FNTYPE is 0.
        !           477: 
        !           478:    On the Alliant, the offset starts at 0.  */
        !           479: 
        !           480: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE)       \
        !           481:  ((CUM) = 0)
        !           482: 
        !           483: /* Update the data in CUM to advance over an argument
        !           484:    of mode MODE and data type TYPE.
        !           485:    (TYPE is null for libcalls where that information may not be available.)  */
        !           486: 
        !           487: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)   \
        !           488:  ((CUM) += ((MODE) != BLKmode                  \
        !           489:            ? (GET_MODE_SIZE (MODE) + 3) & ~3   \
        !           490:            : (int_size_in_bytes (TYPE) + 3) & ~3))
        !           491: 
        !           492: /* Define where to put the arguments to a function.
        !           493:    Value is zero to push the argument on the stack,
        !           494:    or a hard register in which to store the argument.
        !           495: 
        !           496:    MODE is the argument's machine mode.
        !           497:    TYPE is the data type of the argument (as a tree).
        !           498:     This is null for libcalls where that information may
        !           499:     not be available.
        !           500:    CUM is a variable of type CUMULATIVE_ARGS which gives info about
        !           501:     the preceding args and about the function being called.
        !           502:    NAMED is nonzero if this argument is a named parameter
        !           503:     (otherwise it is an extra parameter matching an ellipsis).  */
        !           504: 
        !           505: /* On the Alliant all args are pushed.  */
        !           506: 
        !           507: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) 0
        !           508: 
        !           509: /* For an arg passed partly in registers and partly in memory,
        !           510:    this is the number of registers used.
        !           511:    For args passed entirely in registers or entirely in memory, zero.  */
        !           512: 
        !           513: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0
        !           514: 
        !           515: /* This macro generates the assembly code for function entry.
        !           516:    FILE is a stdio stream to output the code to.
        !           517:    SIZE is an int: how many units of temporary storage to allocate.
        !           518:    Refer to the array `regs_ever_live' to determine which registers
        !           519:    to save; `regs_ever_live[I]' is nonzero if register number I
        !           520:    is ever used in the function.  This macro is responsible for
        !           521:    knowing which registers should not be saved even if used.
        !           522:    The Alliant uses caller-saves, so this macro is very simple.  */
        !           523: 
        !           524: #define FUNCTION_PROLOGUE(FILE, SIZE)     \
        !           525: { int fsize = ((SIZE) - STARTING_FRAME_OFFSET + 3) & -4;       \
        !           526:   if (frame_pointer_needed) {                                  \
        !           527:     if (TARGET_68020 || fsize < 0x8000)                                \
        !           528:       fprintf(FILE,"\tlink a6,#%d\n", -fsize);                 \
        !           529:     else                                                       \
        !           530:       fprintf(FILE,"\tlink a6,#0\n\tsubl #%d,sp\n", fsize);    \
        !           531:     fprintf(FILE, "\tmovl a0,a6@(-4)\n" ); }}
        !           532: 
        !           533: /* Output assembler code to FILE to increment profiler label # LABELNO
        !           534:    for profiling a function entry.  */
        !           535: 
        !           536: #define FUNCTION_PROFILER(FILE, LABELNO)  \
        !           537:   fprintf (FILE, "\tjbsr __mcount_\n")
        !           538: 
        !           539: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
        !           540:    the stack pointer does not matter.  The value is tested only in
        !           541:    functions that have frame pointers.
        !           542:    No definition is equivalent to always zero.  */
        !           543: 
        !           544: #define EXIT_IGNORE_STACK 1
        !           545: 
        !           546: /* This macro generates the assembly code for function exit,
        !           547:    on machines that need it.  If FUNCTION_EPILOGUE is not defined
        !           548:    then individual return instructions are generated for each
        !           549:    return statement.  Args are same as for FUNCTION_PROLOGUE.
        !           550: 
        !           551:    The function epilogue should not depend on the current stack pointer!
        !           552:    It should use the frame pointer only.  This is mandatory because
        !           553:    of alloca; we also take advantage of it to omit stack adjustments
        !           554:    before returning.  */
        !           555: 
        !           556: #define FUNCTION_EPILOGUE(FILE, SIZE) \
        !           557: { if (frame_pointer_needed)                                    \
        !           558:     fprintf (FILE, "\tunlk a6\n");                             \
        !           559:   fprintf (FILE, "\trts\n"); }
        !           560: 
        !           561: /* If the memory address ADDR is relative to the frame pointer,
        !           562:    correct it to be relative to the stack pointer instead.
        !           563:    This is for when we don't use a frame pointer.
        !           564:    ADDR should be a variable name.  */
        !           565: 
        !           566: #define FIX_FRAME_POINTER_ADDRESS(ADDR,DEPTH)  \
        !           567: { int offset = -1;                                                     \
        !           568:   rtx regs = stack_pointer_rtx;                                                \
        !           569:   if (ADDR == frame_pointer_rtx)                                       \
        !           570:     offset = 0;                                                                \
        !           571:   else if (GET_CODE (ADDR) == PLUS && XEXP (ADDR, 0) == frame_pointer_rtx \
        !           572:           && GET_CODE (XEXP (ADDR, 1)) == CONST_INT)                   \
        !           573:     offset = INTVAL (XEXP (ADDR, 1));                                  \
        !           574:   else if (GET_CODE (ADDR) == PLUS && XEXP (ADDR, 0) == frame_pointer_rtx) \
        !           575:     { rtx other_reg = XEXP (ADDR, 1);                                  \
        !           576:       offset = 0;                                                      \
        !           577:       regs = gen_rtx (PLUS, Pmode, stack_pointer_rtx, other_reg); }    \
        !           578:   else if (GET_CODE (ADDR) == PLUS && XEXP (ADDR, 1) == frame_pointer_rtx) \
        !           579:     { rtx other_reg = XEXP (ADDR, 0);                                  \
        !           580:       offset = 0;                                                      \
        !           581:       regs = gen_rtx (PLUS, Pmode, stack_pointer_rtx, other_reg); }    \
        !           582:   else if (GET_CODE (ADDR) == PLUS                                     \
        !           583:           && GET_CODE (XEXP (ADDR, 0)) == PLUS                         \
        !           584:           && XEXP (XEXP (ADDR, 0), 0) == frame_pointer_rtx             \
        !           585:           && GET_CODE (XEXP (ADDR, 1)) == CONST_INT)                   \
        !           586:     { rtx other_reg = XEXP (XEXP (ADDR, 0), 1);                                \
        !           587:       offset = INTVAL (XEXP (ADDR, 1));                                        \
        !           588:       regs = gen_rtx (PLUS, Pmode, stack_pointer_rtx, other_reg); }    \
        !           589:   else if (GET_CODE (ADDR) == PLUS                                     \
        !           590:           && GET_CODE (XEXP (ADDR, 0)) == PLUS                         \
        !           591:           && XEXP (XEXP (ADDR, 0), 1) == frame_pointer_rtx             \
        !           592:           && GET_CODE (XEXP (ADDR, 1)) == CONST_INT)                   \
        !           593:     { rtx other_reg = XEXP (XEXP (ADDR, 0), 0);                                \
        !           594:       offset = INTVAL (XEXP (ADDR, 1));                                        \
        !           595:       regs = gen_rtx (PLUS, Pmode, stack_pointer_rtx, other_reg); }    \
        !           596:   if (offset >= 0)                                                     \
        !           597:     { int regno;                                                       \
        !           598:       extern char call_used_regs[];                                    \
        !           599:       for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++)         \
        !           600:         if (regs_ever_live[regno] && ! call_used_regs[regno])          \
        !           601:           offset += 12;                                                        \
        !           602:       for (regno = 0; regno < 16; regno++)                             \
        !           603:        if (regs_ever_live[regno] && ! call_used_regs[regno])           \
        !           604:          offset += 4;                                                  \
        !           605:       offset -= 4;                                                     \
        !           606:       ADDR = plus_constant (regs, offset + (DEPTH)); } }               \
        !           607: 
        !           608: /* Addressing modes, and classification of registers for them.  */
        !           609: 
        !           610: #define HAVE_POST_INCREMENT
        !           611: /* #define HAVE_POST_DECREMENT */
        !           612: 
        !           613: #define HAVE_PRE_DECREMENT
        !           614: /* #define HAVE_PRE_INCREMENT */
        !           615: 
        !           616: /* Macros to check register numbers against specific register classes.  */
        !           617: 
        !           618: /* These assume that REGNO is a hard or pseudo reg number.
        !           619:    They give nonzero only if REGNO is a hard reg of the suitable class
        !           620:    or a pseudo reg currently allocated to a suitable hard reg.
        !           621:    Since they use reg_renumber, they are safe only once reg_renumber
        !           622:    has been allocated, which happens in local-alloc.c.  */
        !           623: 
        !           624: #define REGNO_OK_FOR_INDEX_P(REGNO) \
        !           625: ((REGNO) < 16 || (unsigned) reg_renumber[REGNO] < 16)
        !           626: #define REGNO_OK_FOR_BASE_P(REGNO) \
        !           627: (((REGNO) ^ 010) < 8 || (unsigned) (reg_renumber[REGNO] ^ 010) < 8)
        !           628: #define REGNO_OK_FOR_DATA_P(REGNO) \
        !           629: ((REGNO) < 8 || (unsigned) reg_renumber[REGNO] < 8)
        !           630: #define REGNO_OK_FOR_FP_P(REGNO) \
        !           631: (((REGNO) ^ 020) < 8 || (unsigned) (reg_renumber[REGNO] ^ 020) < 8)
        !           632: 
        !           633: /* Now macros that check whether X is a register and also,
        !           634:    strictly, whether it is in a specified class.
        !           635: 
        !           636:    These macros are specific to the 68000, and may be used only
        !           637:    in code for printing assembler insns and in conditions for
        !           638:    define_optimization.  */
        !           639: 
        !           640: /* 1 if X is a data register.  */
        !           641: 
        !           642: #define DATA_REG_P(X) (REG_P (X) && REGNO_OK_FOR_DATA_P (REGNO (X)))
        !           643: 
        !           644: /* 1 if X is an fp register.  */
        !           645: 
        !           646: #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X)))
        !           647: 
        !           648: /* 1 if X is an address register  */
        !           649: 
        !           650: #define ADDRESS_REG_P(X) (REG_P (X) && REGNO_OK_FOR_BASE_P (REGNO (X)))
        !           651: 
        !           652: /* Maximum number of registers that can appear in a valid memory address.  */
        !           653: 
        !           654: #define MAX_REGS_PER_ADDRESS 2
        !           655: 
        !           656: /* Recognize any constant value that is a valid address.  */
        !           657: 
        !           658: #define CONSTANT_ADDRESS_P(X)  CONSTANT_P (X)
        !           659: 
        !           660: /* Nonzero if the constant value X is a legitimate general operand.
        !           661:    It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE.  */
        !           662: 
        !           663: /* Alliant FP instructions don't take immediate operands, so this
        !           664:    forces them into memory.  */
        !           665: #define LEGITIMATE_CONSTANT_P(X) (GET_CODE (X) != CONST_DOUBLE)
        !           666: 
        !           667: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
        !           668:    and check its validity for a certain class.
        !           669:    We have two alternate definitions for each of them.
        !           670:    The usual definition accepts all pseudo regs; the other rejects
        !           671:    them unless they have been allocated suitable hard regs.
        !           672:    The symbol REG_OK_STRICT causes the latter definition to be used.
        !           673: 
        !           674:    Most source files want to accept pseudo regs in the hope that
        !           675:    they will get allocated to the class that the insn wants them to be in.
        !           676:    Source files for reload pass need to be strict.
        !           677:    After reload, it makes no difference, since pseudo regs have
        !           678:    been eliminated by then.  */
        !           679: 
        !           680: #ifndef REG_OK_STRICT
        !           681: 
        !           682: /* Nonzero if X is a hard reg that can be used as an index
        !           683:    or if it is a pseudo reg.  */
        !           684: #define REG_OK_FOR_INDEX_P(X) ((REGNO (X) ^ 020) >= 8)
        !           685: /* Nonzero if X is a hard reg that can be used as a base reg
        !           686:    or if it is a pseudo reg.  */
        !           687: #define REG_OK_FOR_BASE_P(X) ((REGNO (X) & ~027) != 0)
        !           688: 
        !           689: #else
        !           690: 
        !           691: /* Nonzero if X is a hard reg that can be used as an index.  */
        !           692: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
        !           693: /* Nonzero if X is a hard reg that can be used as a base reg.  */
        !           694: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
        !           695: 
        !           696: #endif
        !           697: 
        !           698: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
        !           699:    that is a valid memory address for an instruction.
        !           700:    The MODE argument is the machine mode for the MEM expression
        !           701:    that wants to use this address.
        !           702: 
        !           703:    The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS.  */
        !           704: 
        !           705: #define INDIRECTABLE_1_ADDRESS_P(X)  \
        !           706:   (CONSTANT_ADDRESS_P (X)                                              \
        !           707:    || (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X))                   \
        !           708:    || ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_INC)           \
        !           709:        && REG_P (XEXP (X, 0))                                          \
        !           710:        && REG_OK_FOR_BASE_P (XEXP (X, 0)))                             \
        !           711:    || (GET_CODE (X) == PLUS                                            \
        !           712:        && REG_P (XEXP (X, 0)) && REG_OK_FOR_BASE_P (XEXP (X, 0))       \
        !           713:        && GET_CODE (XEXP (X, 1)) == CONST_INT                          \
        !           714:        && ((unsigned) INTVAL (XEXP (X, 1)) + 0x8000) < 0x10000))
        !           715: 
        !           716: #define GO_IF_NONINDEXED_ADDRESS(X, ADDR)  \
        !           717: { if (INDIRECTABLE_1_ADDRESS_P (X)) goto ADDR; }
        !           718: 
        !           719: #define GO_IF_INDEXABLE_BASE(X, ADDR)  \
        !           720: { if (GET_CODE (X) == LABEL_REF) goto ADDR;                            \
        !           721:   if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) goto ADDR; }
        !           722: 
        !           723: #define GO_IF_INDEXING(X, ADDR)        \
        !           724: { if (GET_CODE (X) == PLUS && LEGITIMATE_INDEX_P (XEXP (X, 0)))                \
        !           725:     { GO_IF_INDEXABLE_BASE (XEXP (X, 1), ADDR); }                      \
        !           726:   if (GET_CODE (X) == PLUS && LEGITIMATE_INDEX_P (XEXP (X, 1)))                \
        !           727:     { GO_IF_INDEXABLE_BASE (XEXP (X, 0), ADDR); } }
        !           728: 
        !           729: #define GO_IF_INDEXED_ADDRESS(X, ADDR)  \
        !           730: { GO_IF_INDEXING (X, ADDR);                                            \
        !           731:   if (GET_CODE (X) == PLUS)                                            \
        !           732:     { if (GET_CODE (XEXP (X, 1)) == CONST_INT                          \
        !           733:          && (unsigned) INTVAL (XEXP (X, 1)) + 0x80 < 0x100)            \
        !           734:        { rtx go_temp = XEXP (X, 0); GO_IF_INDEXING (go_temp, ADDR); }  \
        !           735:       if (GET_CODE (XEXP (X, 0)) == CONST_INT                          \
        !           736:          && (unsigned) INTVAL (XEXP (X, 0)) + 0x80 < 0x100)            \
        !           737:        { rtx go_temp = XEXP (X, 1); GO_IF_INDEXING (go_temp, ADDR); } } }
        !           738: 
        !           739: #define LEGITIMATE_INDEX_REG_P(X)   \
        !           740:   ((GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X))     \
        !           741:    || (GET_CODE (X) == SIGN_EXTEND                     \
        !           742:        && GET_CODE (XEXP (X, 0)) == REG                        \
        !           743:        && GET_MODE (XEXP (X, 0)) == HImode             \
        !           744:        && REG_OK_FOR_INDEX_P (XEXP (X, 0))))
        !           745: 
        !           746: #define LEGITIMATE_INDEX_P(X)   \
        !           747:    (LEGITIMATE_INDEX_REG_P (X)                         \
        !           748:     || (TARGET_68020 && GET_CODE (X) == MULT           \
        !           749:        && LEGITIMATE_INDEX_REG_P (XEXP (X, 0))         \
        !           750:        && GET_CODE (XEXP (X, 1)) == CONST_INT          \
        !           751:        && (INTVAL (XEXP (X, 1)) == 2                   \
        !           752:            || INTVAL (XEXP (X, 1)) == 4                \
        !           753:            || INTVAL (XEXP (X, 1)) == 8)))
        !           754: 
        !           755: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)  \
        !           756: { GO_IF_NONINDEXED_ADDRESS (X, ADDR);                  \
        !           757:   GO_IF_INDEXED_ADDRESS (X, ADDR); }
        !           758: 
        !           759: /* Try machine-dependent ways of modifying an illegitimate address
        !           760:    to be legitimate.  If we find one, return the new, valid address.
        !           761:    This macro is used in only one place: `memory_address' in explow.c.
        !           762: 
        !           763:    OLDX is the address as it was before break_out_memory_refs was called.
        !           764:    In some cases it is useful to look at this to decide what needs to be done.
        !           765: 
        !           766:    MODE and WIN are passed so that this macro can use
        !           767:    GO_IF_LEGITIMATE_ADDRESS.
        !           768: 
        !           769:    It is always safe for this macro to do nothing.  It exists to recognize
        !           770:    opportunities to optimize the output.
        !           771: 
        !           772:    For the 68000, we handle X+REG by loading X into a register R and
        !           773:    using R+REG.  R will go in an address reg and indexing will be used.
        !           774:    However, if REG is a broken-out memory address or multiplication,
        !           775:    nothing needs to be done because REG can certainly go in an address reg.  */
        !           776: 
        !           777: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN)   \
        !           778: { register int ch = (X) != (OLDX);                                     \
        !           779:   if (GET_CODE (X) == PLUS)                                            \
        !           780:     { if (GET_CODE (XEXP (X, 0)) == MULT)                              \
        !           781:        ch = 1, XEXP (X, 0) = force_operand (XEXP (X, 0), 0);           \
        !           782:       if (GET_CODE (XEXP (X, 1)) == MULT)                              \
        !           783:        ch = 1, XEXP (X, 1) = force_operand (XEXP (X, 1), 0);           \
        !           784:       if (ch && GET_CODE (XEXP (X, 1)) == REG                          \
        !           785:          && GET_CODE (XEXP (X, 0)) == REG)                             \
        !           786:        return X;                                                       \
        !           787:       if (ch) { GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN); }             \
        !           788:       if (GET_CODE (XEXP (X, 0)) == REG                                        \
        !           789:               || (GET_CODE (XEXP (X, 0)) == SIGN_EXTEND                \
        !           790:                   && GET_CODE (XEXP (XEXP (X, 0), 0)) == REG           \
        !           791:                   && GET_MODE (XEXP (XEXP (X, 0), 0)) == HImode))      \
        !           792:        { register rtx temp = gen_reg_rtx (Pmode);                      \
        !           793:          register rtx val = force_operand (XEXP (X, 1), 0);            \
        !           794:          emit_move_insn (temp, val);                                   \
        !           795:          XEXP (X, 1) = temp;                                           \
        !           796:          return X; }                                                   \
        !           797:       else if (GET_CODE (XEXP (X, 1)) == REG                           \
        !           798:               || (GET_CODE (XEXP (X, 1)) == SIGN_EXTEND                \
        !           799:                   && GET_CODE (XEXP (XEXP (X, 1), 0)) == REG           \
        !           800:                   && GET_MODE (XEXP (XEXP (X, 1), 0)) == HImode))      \
        !           801:        { register rtx temp = gen_reg_rtx (Pmode);                      \
        !           802:          register rtx val = force_operand (XEXP (X, 0), 0);            \
        !           803:          emit_move_insn (temp, val);                                   \
        !           804:          XEXP (X, 0) = temp;                                           \
        !           805:          return X; }}}
        !           806: 
        !           807: /* Go to LABEL if ADDR (a legitimate address expression)
        !           808:    has an effect that depends on the machine mode it is used for.
        !           809:    On the 68000, only predecrement and postincrement address depend thus
        !           810:    (the amount of decrement or increment being the length of the operand).  */
        !           811: 
        !           812: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)       \
        !           813:  if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) goto LABEL
        !           814: 
        !           815: /* Specify the machine mode that this machine uses
        !           816:    for the index in the tablejump instruction.  */
        !           817: #define CASE_VECTOR_MODE HImode
        !           818: 
        !           819: /* Define this if the tablejump instruction expects the table
        !           820:    to contain offsets from the address of the table.
        !           821:    Do not define this if the table should contain absolute addresses.  */
        !           822: #define CASE_VECTOR_PC_RELATIVE
        !           823: 
        !           824: /* Specify the tree operation to be used to convert reals to integers.  */
        !           825: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
        !           826: 
        !           827: /* This is the kind of divide that is easiest to do in the general case.  */
        !           828: #define EASY_DIV_EXPR TRUNC_DIV_EXPR
        !           829: 
        !           830: /* Define this as 1 if `char' should by default be signed; else as 0.  */
        !           831: #define DEFAULT_SIGNED_CHAR 1
        !           832: 
        !           833: /* Max number of bytes we can move from memory to memory
        !           834:    in one reasonably fast instruction.  */
        !           835: #define MOVE_MAX 4
        !           836: 
        !           837: /* Define this if zero-extension is slow (more than one real instruction).  */
        !           838: #define SLOW_ZERO_EXTEND
        !           839: 
        !           840: /* Nonzero if access to memory by bytes is slow and undesirable.  */
        !           841: #define SLOW_BYTE_ACCESS 0
        !           842: 
        !           843: /* Define if shifts truncate the shift count
        !           844:    which implies one can omit a sign-extension or zero-extension
        !           845:    of a shift count.  */
        !           846: #define SHIFT_COUNT_TRUNCATED
        !           847: 
        !           848: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
        !           849:    is done just by pretending it is already truncated.  */
        !           850: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
        !           851: 
        !           852: /* We assume that the store-condition-codes instructions store 0 for false
        !           853:    and some other value for true.  This is the value stored for true.  */
        !           854: 
        !           855: #define STORE_FLAG_VALUE -1
        !           856: 
        !           857: /* When a prototype says `char' or `short', really pass an `int'.  */
        !           858: #define PROMOTE_PROTOTYPES
        !           859: 
        !           860: /* Specify the machine mode that pointers have.
        !           861:    After generation of rtl, the compiler makes no further distinction
        !           862:    between pointers and any other objects of this machine mode.  */
        !           863: #define Pmode SImode
        !           864: 
        !           865: /* A function address in a call instruction
        !           866:    is a byte address (for indexing purposes)
        !           867:    so give the MEM rtx a byte's mode.  */
        !           868: #define FUNCTION_MODE QImode
        !           869: 
        !           870: /* Compute the cost of computing a constant rtl expression RTX
        !           871:    whose rtx-code is CODE.  The body of this macro is a portion
        !           872:    of a switch statement.  If the code is computed here,
        !           873:    return it with a return statement.  Otherwise, break from the switch.  */
        !           874: 
        !           875: #define CONST_COSTS(RTX,CODE) \
        !           876:   case CONST_INT:                                              \
        !           877:     /* Constant zero is super cheap due to clr instruction.  */        \
        !           878:     if (RTX == const0_rtx) return 0;                           \
        !           879:     if ((unsigned) INTVAL (RTX) < 077) return 1;               \
        !           880:   case CONST:                                                  \
        !           881:   case LABEL_REF:                                              \
        !           882:   case SYMBOL_REF:                                             \
        !           883:     return 3;                                                  \
        !           884:   case CONST_DOUBLE:                                           \
        !           885:     return 5;
        !           886: 
        !           887: /* Tell final.c how to eliminate redundant test instructions.  */
        !           888: 
        !           889: /* Here we define machine-dependent flags and fields in cc_status
        !           890:    (see `conditions.h').  */
        !           891: 
        !           892: /* On the Alliant, floating-point instructions do not modify the
        !           893:    ordinary CC register.  Only fcmp and ftest instructions modify the
        !           894:    floating-point CC register.  We should actually keep track of what
        !           895:    both kinds of CC registers contain, but for now we only consider
        !           896:    the most recent instruction that has set either register.  */
        !           897: 
        !           898: /* Set if the cc value came from a floating point test, so a floating
        !           899:    point conditional branch must be output.  */
        !           900: #define CC_IN_FP 04000
        !           901: 
        !           902: /* Store in cc_status the expressions
        !           903:    that the condition codes will describe
        !           904:    after execution of an instruction whose pattern is EXP.
        !           905:    Do not alter them if the instruction would not alter the cc's.  */
        !           906: 
        !           907: /* On the 68000, all the insns to store in an address register
        !           908:    fail to set the cc's.  However, in some cases these instructions
        !           909:    can make it possibly invalid to use the saved cc's.  In those
        !           910:    cases we clear out some or all of the saved cc's so they won't be used.  */
        !           911: 
        !           912: #define NOTICE_UPDATE_CC(EXP, INSN) \
        !           913: {                                                              \
        !           914:   if (GET_CODE (EXP) == SET)                                   \
        !           915:     { if (ADDRESS_REG_P (SET_DEST (EXP)) || FP_REG_P (SET_DEST (EXP)))     \
        !           916:        { if (cc_status.value1                                  \
        !           917:              && reg_overlap_mentioned_p (SET_DEST (EXP), cc_status.value1)) \
        !           918:            cc_status.value1 = 0;                               \
        !           919:          if (cc_status.value2                                  \
        !           920:              && reg_overlap_mentioned_p (SET_DEST (EXP), cc_status.value2)) \
        !           921:            cc_status.value2 = 0; }                             \
        !           922:       else if (SET_DEST (EXP) != cc0_rtx                               \
        !           923:               && (FP_REG_P (SET_SRC (EXP))                     \
        !           924:                   || GET_CODE (SET_SRC (EXP)) == FIX           \
        !           925:                   || GET_CODE (SET_SRC (EXP)) == FLOAT_TRUNCATE \
        !           926:                   || GET_CODE (SET_SRC (EXP)) == FLOAT_EXTEND)) \
        !           927:        { CC_STATUS_INIT; }                                     \
        !           928:       /* A pair of move insns doesn't produce a useful overall cc.  */ \
        !           929:       else if (!FP_REG_P (SET_DEST (EXP))                      \
        !           930:               && !FP_REG_P (SET_SRC (EXP))                     \
        !           931:               && GET_MODE_SIZE (GET_MODE (SET_SRC (EXP))) > 4  \
        !           932:               && (GET_CODE (SET_SRC (EXP)) == REG              \
        !           933:                   || GET_CODE (SET_SRC (EXP)) == MEM           \
        !           934:                   || GET_CODE (SET_SRC (EXP)) == CONST_DOUBLE))\
        !           935:        { CC_STATUS_INIT; }                                     \
        !           936:       else if (GET_CODE (SET_SRC (EXP)) == CALL)               \
        !           937:        { CC_STATUS_INIT; }                                     \
        !           938:       else if (XEXP (EXP, 0) != pc_rtx)                                \
        !           939:        { cc_status.flags = 0;                                  \
        !           940:          cc_status.value1 = XEXP (EXP, 0);                     \
        !           941:          cc_status.value2 = XEXP (EXP, 1); } }                 \
        !           942:   else if (GET_CODE (EXP) == PARALLEL                          \
        !           943:           && GET_CODE (XVECEXP (EXP, 0, 0)) == SET)            \
        !           944:     {                                                          \
        !           945:       if (ADDRESS_REG_P (XEXP (XVECEXP (EXP, 0, 0), 0)))       \
        !           946:        CC_STATUS_INIT;                                         \
        !           947:       else if (XEXP (XVECEXP (EXP, 0, 0), 0) != pc_rtx)                \
        !           948:        { cc_status.flags = 0;                                  \
        !           949:          cc_status.value1 = XEXP (XVECEXP (EXP, 0, 0), 0);     \
        !           950:          cc_status.value2 = XEXP (XVECEXP (EXP, 0, 0), 1); } } \
        !           951:   else CC_STATUS_INIT;                                         \
        !           952:   if (cc_status.value2 != 0                                    \
        !           953:       && ADDRESS_REG_P (cc_status.value2)                      \
        !           954:       && GET_MODE (cc_status.value2) == QImode)                        \
        !           955:     CC_STATUS_INIT;                                            \
        !           956:   if (cc_status.value2 != 0)                                   \
        !           957:     switch (GET_CODE (cc_status.value2))                       \
        !           958:       { case PLUS: case MINUS: case MULT: case UMULT:          \
        !           959:        case DIV: case UDIV: case MOD: case UMOD: case NEG:     \
        !           960:        case ASHIFT: case LSHIFT: case ASHIFTRT: case LSHIFTRT: \
        !           961:        case ROTATE: case ROTATERT:                             \
        !           962:          if (GET_MODE (cc_status.value2) != VOIDmode)          \
        !           963:            cc_status.flags |= CC_NO_OVERFLOW;                  \
        !           964:          break;                                                \
        !           965:        case ZERO_EXTEND:                                       \
        !           966:          /* (SET r1 (ZERO_EXTEND r2)) on this machine
        !           967:             ends with a move insn moving r2 in r2's mode.
        !           968:             Thus, the cc's are set for r2.
        !           969:             This can set N bit spuriously. */                  \
        !           970:          cc_status.flags |= CC_NOT_NEGATIVE; }                 \
        !           971:   if (cc_status.value1 && GET_CODE (cc_status.value1) == REG   \
        !           972:       && cc_status.value2                                      \
        !           973:       && reg_overlap_mentioned_p (cc_status.value1, cc_status.value2)) \
        !           974:     cc_status.value2 = 0;                                      \
        !           975:   if ((cc_status.value1 && FP_REG_P (cc_status.value1))                \
        !           976:        || (cc_status.value2 && FP_REG_P (cc_status.value2)))   \
        !           977:     cc_status.flags = CC_IN_FP; }
        !           978: 
        !           979: #define OUTPUT_JUMP(NORMAL, FLOAT, NO_OV)  \
        !           980: { if (cc_prev_status.flags & CC_IN_FP)                 \
        !           981:     return FLOAT;                                              \
        !           982:   if (cc_prev_status.flags & CC_NO_OVERFLOW)                   \
        !           983:     return NO_OV;                                              \
        !           984:   return NORMAL; }
        !           985: 
        !           986: /* Control the assembler format that we output.  */
        !           987: 
        !           988: /* Output at beginning of assembler file.  */
        !           989: 
        !           990: #define ASM_FILE_START(FILE)   \
        !           991:   fprintf (FILE, "#NO_APP\n");
        !           992: 
        !           993: /* Output to assembler file text saying following lines
        !           994:    may contain character constants, extra white space, comments, etc.  */
        !           995: 
        !           996: #define ASM_APP_ON "#APP\n"
        !           997: 
        !           998: /* Output to assembler file text saying following lines
        !           999:    no longer contain unusual constructs.  */
        !          1000: 
        !          1001: #define ASM_APP_OFF "#NO_APP\n"
        !          1002: 
        !          1003: /* Output before read-only data.  */
        !          1004: 
        !          1005: #define TEXT_SECTION_ASM_OP "\t.text"
        !          1006: 
        !          1007: /* Output before writable data.  */
        !          1008: 
        !          1009: #define DATA_SECTION_ASM_OP "\t.data"
        !          1010: 
        !          1011: /* How to refer to registers in assembler output.
        !          1012:    This sequence is indexed by compiler's hard-register-number (see above).  */
        !          1013: 
        !          1014: #define REGISTER_NAMES \
        !          1015: {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",       \
        !          1016:  "a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp",       \
        !          1017:  "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7" }
        !          1018: 
        !          1019: /* How to renumber registers for dbx and gdb.
        !          1020:    On the Sun-3, the floating point registers have numbers
        !          1021:    18 to 25, not 16 to 23 as they do in the compiler.  */
        !          1022: /* (On the Alliant, dbx isn't working yet at all.  */
        !          1023: 
        !          1024: #define DBX_REGISTER_NUMBER(REGNO) ((REGNO) < 16 ? (REGNO) : (REGNO) + 2)
        !          1025: 
        !          1026: /* This is how to output the definition of a user-level label named NAME,
        !          1027:    such as the label on a static function or variable NAME.  */
        !          1028: 
        !          1029: #define ASM_OUTPUT_LABEL(FILE,NAME)    \
        !          1030:   do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
        !          1031: 
        !          1032: /* This is how to output a command to make the user-level label named NAME
        !          1033:    defined for reference from other files.  */
        !          1034: 
        !          1035: #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
        !          1036:   do { fputs ("\t.globl ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)
        !          1037: 
        !          1038: /* This is how to output a reference to a user-level label named NAME.
        !          1039:    `assemble_name' uses this.  */
        !          1040: 
        !          1041: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
        !          1042:   fprintf (FILE, "_%s", NAME)
        !          1043: 
        !          1044: /* This is how to output an internal numbered label where
        !          1045:    PREFIX is the class of label and NUM is the number within the class.  */
        !          1046: 
        !          1047: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)     \
        !          1048:   fprintf (FILE, "%s%d:\n", PREFIX, NUM)
        !          1049: 
        !          1050: /* This is how to store into the string LABEL
        !          1051:    the symbol_ref name of an internal numbered label where
        !          1052:    PREFIX is the class of label and NUM is the number within the class.
        !          1053:    This is suitable for output with `assemble_name'.  */
        !          1054: 
        !          1055: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)  \
        !          1056:   sprintf (LABEL, "*%s%d", PREFIX, NUM)
        !          1057: 
        !          1058: /* This is how to output an assembler line defining a `double' constant.  */
        !          1059: 
        !          1060: #define ASM_OUTPUT_DOUBLE(FILE,VALUE)  \
        !          1061: do { union { double d; long v[2];} tem;                        \
        !          1062:      tem.d = (VALUE);                                  \
        !          1063:      fprintf (FILE, "\t.long 0x%x,0x%x\n", tem.v[0], tem.v[1]);        \
        !          1064:    } while (0)
        !          1065: 
        !          1066: /* This is how to output an assembler line defining a `float' constant.  */
        !          1067: 
        !          1068: #define ASM_OUTPUT_FLOAT(FILE,VALUE)  \
        !          1069: do { union { float f; long l;} tem;                    \
        !          1070:      tem.f = (VALUE);                                  \
        !          1071:      fprintf (FILE, "\t.long 0x%x\n", tem.l);  \
        !          1072:    } while (0)
        !          1073: 
        !          1074: /* This is how to output an assembler line defining an `int' constant.  */
        !          1075: 
        !          1076: #define ASM_OUTPUT_INT(FILE,VALUE)  \
        !          1077: ( fprintf (FILE, "\t.long "),                  \
        !          1078:   output_addr_const (FILE, (VALUE)),           \
        !          1079:   fprintf (FILE, "\n"))
        !          1080: 
        !          1081: /* Likewise for `char' and `short' constants.  */
        !          1082: 
        !          1083: #define ASM_OUTPUT_SHORT(FILE,VALUE)  \
        !          1084: ( fprintf (FILE, "\t.word "),                  \
        !          1085:   output_addr_const (FILE, (VALUE)),           \
        !          1086:   fprintf (FILE, "\n"))
        !          1087: 
        !          1088: #define ASM_OUTPUT_CHAR(FILE,VALUE)  \
        !          1089: ( fprintf (FILE, "\t.byte "),                  \
        !          1090:   output_addr_const (FILE, (VALUE)),           \
        !          1091:   fprintf (FILE, "\n"))
        !          1092: 
        !          1093: #define ASM_OUTPUT_ASCII(FILE,PTR,SIZE)               \
        !          1094: { int i; unsigned char *pp = (unsigned char *) PTR;            \
        !          1095:   fprintf(FILE, "\t.byte %d", (unsigned int)*pp++);            \
        !          1096:   for (i = 1; i < SIZE; ++i, ++pp) {                           \
        !          1097:     if ((i % 8) == 0)                                          \
        !          1098:       fprintf(FILE, "\n\t.byte %d", (unsigned int) *pp);       \
        !          1099:     else                                                       \
        !          1100:       fprintf(FILE, ",%d", (unsigned int) *pp); }              \
        !          1101:   fprintf (FILE, "\n");       }
        !          1102: 
        !          1103: /* This is how to output an assembler line for a numeric constant byte.  */
        !          1104: 
        !          1105: #define ASM_OUTPUT_BYTE(FILE,VALUE)  \
        !          1106:   fprintf (FILE, "\t.byte 0x%x\n", (VALUE))
        !          1107: 
        !          1108: /* This is how to output an insn to push a register on the stack.
        !          1109:    It need not be very fast code.  */
        !          1110: 
        !          1111: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO)  \
        !          1112:   fprintf (FILE, "\tmovl %s,sp@-\n", reg_names[REGNO])
        !          1113: 
        !          1114: /* This is how to output an insn to pop a register from the stack.
        !          1115:    It need not be very fast code.  */
        !          1116: 
        !          1117: #define ASM_OUTPUT_REG_POP(FILE,REGNO)  \
        !          1118:   fprintf (FILE, "\tmovl sp@+,%s\n", reg_names[REGNO])
        !          1119: 
        !          1120: /* This is how to output an element of a case-vector that is absolute.
        !          1121:    (The 68000 does not use such vectors,
        !          1122:    but we must define this macro anyway.)  */
        !          1123: 
        !          1124: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
        !          1125:   fprintf (FILE, "\t.long L%d\n", VALUE)
        !          1126: 
        !          1127: /* This is how to output an element of a case-vector that is relative.  */
        !          1128: 
        !          1129: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)  \
        !          1130:   fprintf (FILE, "\t.word L%d-L%d\n", VALUE, REL)
        !          1131: 
        !          1132: /* This is how to output an assembler line
        !          1133:    that says to advance the location counter
        !          1134:    to a multiple of 2**LOG bytes.  */
        !          1135: 
        !          1136: #define ASM_OUTPUT_ALIGN(FILE,LOG)     \
        !          1137:   if ((LOG) == 1)                      \
        !          1138:     fprintf (FILE, "\t.even\n");       \
        !          1139:   else if ((LOG) != 0)                 \
        !          1140:     fprintf (FILE, "\t.align %dn", (LOG));     
        !          1141: 
        !          1142: #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
        !          1143:   fprintf (FILE, "\t. = . + %d\n", (SIZE))
        !          1144: 
        !          1145: /* This says how to output an assembler line
        !          1146:    to define a global common symbol.  */
        !          1147: 
        !          1148: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)  \
        !          1149: ( fputs ("\t.comm ", (FILE)),                  \
        !          1150:   assemble_name ((FILE), (NAME)),              \
        !          1151:   fprintf ((FILE), ",%d\n", (ROUNDED)))
        !          1152: 
        !          1153: /* This says how to output an assembler line
        !          1154:    to define a local common symbol.  */
        !          1155: 
        !          1156: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
        !          1157: ( fputs ("\t.lcomm ", (FILE)),                 \
        !          1158:   assemble_name ((FILE), (NAME)),              \
        !          1159:   fprintf ((FILE), ",%d\n", (ROUNDED)))
        !          1160: 
        !          1161: /* Store in OUTPUT a string (made with alloca) containing
        !          1162:    an assembler-name for a local static variable named NAME.
        !          1163:    LABELNO is an integer which is different for each call.  */
        !          1164: 
        !          1165: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
        !          1166: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10),   \
        !          1167:   sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
        !          1168: 
        !          1169: /* Define the parentheses used to group arithmetic operations
        !          1170:    in assembler code.  */
        !          1171: 
        !          1172: #define ASM_OPEN_PAREN "("
        !          1173: #define ASM_CLOSE_PAREN ")"
        !          1174: 
        !          1175: /* Define results of standard character escape sequences.  */
        !          1176: #define TARGET_BELL 007
        !          1177: #define TARGET_BS 010
        !          1178: #define TARGET_TAB 011
        !          1179: #define TARGET_NEWLINE 012
        !          1180: #define TARGET_VT 013
        !          1181: #define TARGET_FF 014
        !          1182: #define TARGET_CR 015
        !          1183: 
        !          1184: /* Print operand X (an rtx) in assembler syntax to file FILE.
        !          1185:    CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
        !          1186:    For `%' followed by punctuation, CODE is the punctuation and X is null.
        !          1187: 
        !          1188:    On the Alliant, we use several CODE characters:
        !          1189:    '.' for dot needed in Motorola-style opcode names.
        !          1190:    '-' for an operand pushing on the stack:
        !          1191:        sp@-, -(sp) or -(%sp) depending on the style of syntax.
        !          1192:    '+' for an operand pushing on the stack:
        !          1193:        sp@+, (sp)+ or (%sp)+ depending on the style of syntax.
        !          1194:    '@' for a reference to the top word on the stack:
        !          1195:        sp@, (sp) or (%sp) depending on the style of syntax.
        !          1196:    '#' for an immediate operand prefix (# in MIT and Motorola syntax
        !          1197:        but & in SGS syntax).
        !          1198:    '!' for the cc register (used in an `and to cc' insn).
        !          1199: 
        !          1200:    'b' for byte insn (no effect, on the Sun; this is for the ISI).
        !          1201:    'd' to force memory addressing to be absolute, not relative.
        !          1202:    'f' for float insn (print a CONST_DOUBLE as a float rather than in hex)
        !          1203:    'x' for float insn (print a CONST_DOUBLE as a float rather than in hex),
        !          1204:        or print pair of registers as rx:ry.  */
        !          1205: 
        !          1206: #define PRINT_OPERAND_PUNCT_VALID_P(CODE)                              \
        !          1207:   ((CODE) == '.' || (CODE) == '#' || (CODE) == '-'                     \
        !          1208:    || (CODE) == '+' || (CODE) == '@' || (CODE) == '!')
        !          1209: 
        !          1210: #define PRINT_OPERAND(FILE, X, CODE)  \
        !          1211: { int i;                                                               \
        !          1212:   if (CODE == '.') ;                                                   \
        !          1213:   else if (CODE == '#') fprintf (FILE, "#");                           \
        !          1214:   else if (CODE == '-') fprintf (FILE, "sp@-");                                \
        !          1215:   else if (CODE == '+') fprintf (FILE, "sp@+");                                \
        !          1216:   else if (CODE == '@') fprintf (FILE, "sp@");                         \
        !          1217:   else if (CODE == '!') fprintf (FILE, "cc");                          \
        !          1218:   else if ((X)  == 0  ) ;                                              \
        !          1219:   else if (GET_CODE (X) == REG)                                                \
        !          1220:     { if (REGNO (X) < 16 && (CODE == 'y' || CODE == 'x') && GET_MODE (X) == DFmode)    \
        !          1221:         fprintf (FILE, "%s,%s", reg_names[REGNO (X)], reg_names[REGNO (X)+1]); \
        !          1222:       else                                                             \
        !          1223:         fprintf (FILE, "%s", reg_names[REGNO (X)]);                    \
        !          1224:     }                                                                  \
        !          1225:   else if (GET_CODE (X) == MEM)                                                \
        !          1226:     {                                                                  \
        !          1227:       output_address (XEXP (X, 0));                                    \
        !          1228:       if (CODE == 'd' && ! TARGET_68020                                        \
        !          1229:          && CONSTANT_ADDRESS_P (XEXP (X, 0)))                          \
        !          1230:        fprintf (FILE, ":l");                                           \
        !          1231:     }                                                                  \
        !          1232:   else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode)     \
        !          1233:     { union { double d; int i[2]; } u;                                 \
        !          1234:       union { float f; int i; } u1;                                    \
        !          1235:       u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X);   \
        !          1236:       u1.f = u.d;                                                      \
        !          1237:       if (CODE == 'f')                                                 \
        !          1238:         fprintf (FILE, "#0r%.9g", u1.f);                               \
        !          1239:       else                                                             \
        !          1240:         fprintf (FILE, "#0x%x", u1.i); }                               \
        !          1241:   else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != DImode)     \
        !          1242:     { union { double d; int i[2]; } u;                                 \
        !          1243:       u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X);   \
        !          1244:       fprintf (FILE, "#0r%.20g", u.d); }                               \
        !          1245:   else { putc ('#', FILE); output_addr_const (FILE, X); }}
        !          1246: 
        !          1247: /* Note that this contains a kludge that knows that the only reason
        !          1248:    we have an address (plus (label_ref...) (reg...))
        !          1249:    is in the insn before a tablejump, and we know that m68k.md
        !          1250:    generates a label LInnn: on such an insn.  */
        !          1251: #define PRINT_OPERAND_ADDRESS(FILE, ADDR)  \
        !          1252: { register rtx reg1, reg2, breg, ireg;                                 \
        !          1253:   register rtx addr = ADDR;                                            \
        !          1254:   static char *sz = ".BW.L...D";                                       \
        !          1255:   rtx offset;                                                          \
        !          1256:   switch (GET_CODE (addr))                                             \
        !          1257:     {                                                                  \
        !          1258:     case REG:                                                          \
        !          1259:       fprintf (FILE, "%s@", reg_names[REGNO (addr)]);                  \
        !          1260:       break;                                                           \
        !          1261:     case PRE_DEC:                                                      \
        !          1262:       fprintf (FILE, "%s@-", reg_names[REGNO (XEXP (addr, 0))]);       \
        !          1263:       break;                                                           \
        !          1264:     case POST_INC:                                                     \
        !          1265:       fprintf (FILE, "%s@+", reg_names[REGNO (XEXP (addr, 0))]);       \
        !          1266:       break;                                                           \
        !          1267:     case PLUS:                                                         \
        !          1268:       reg1 = 0;        reg2 = 0;                                               \
        !          1269:       ireg = 0;        breg = 0;                                               \
        !          1270:       offset = 0;                                                      \
        !          1271:       if (CONSTANT_ADDRESS_P (XEXP (addr, 0)))                         \
        !          1272:        {                                                               \
        !          1273:          offset = XEXP (addr, 0);                                      \
        !          1274:          addr = XEXP (addr, 1);                                        \
        !          1275:        }                                                               \
        !          1276:       else if (CONSTANT_ADDRESS_P (XEXP (addr, 1)))                    \
        !          1277:        {                                                               \
        !          1278:          offset = XEXP (addr, 1);                                      \
        !          1279:          addr = XEXP (addr, 0);                                        \
        !          1280:        }                                                               \
        !          1281:       if (GET_CODE (addr) != PLUS) ;                                   \
        !          1282:       else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND)               \
        !          1283:        {                                                               \
        !          1284:          reg1 = XEXP (addr, 0);                                        \
        !          1285:          addr = XEXP (addr, 1);                                        \
        !          1286:        }                                                               \
        !          1287:       else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND)               \
        !          1288:        {                                                               \
        !          1289:          reg1 = XEXP (addr, 1);                                        \
        !          1290:          addr = XEXP (addr, 0);                                        \
        !          1291:        }                                                               \
        !          1292:       else if (GET_CODE (XEXP (addr, 0)) == MULT)                      \
        !          1293:        {                                                               \
        !          1294:          reg1 = XEXP (addr, 0);                                        \
        !          1295:          addr = XEXP (addr, 1);                                        \
        !          1296:        }                                                               \
        !          1297:       else if (GET_CODE (XEXP (addr, 1)) == MULT)                      \
        !          1298:        {                                                               \
        !          1299:          reg1 = XEXP (addr, 1);                                        \
        !          1300:          addr = XEXP (addr, 0);                                        \
        !          1301:        }                                                               \
        !          1302:       else if (GET_CODE (XEXP (addr, 0)) == REG)                       \
        !          1303:        {                                                               \
        !          1304:          reg1 = XEXP (addr, 0);                                        \
        !          1305:          addr = XEXP (addr, 1);                                        \
        !          1306:        }                                                               \
        !          1307:       else if (GET_CODE (XEXP (addr, 1)) == REG)                       \
        !          1308:        {                                                               \
        !          1309:          reg1 = XEXP (addr, 1);                                        \
        !          1310:          addr = XEXP (addr, 0);                                        \
        !          1311:        }                                                               \
        !          1312:       if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT            \
        !          1313:          || GET_CODE (addr) == SIGN_EXTEND)                            \
        !          1314:        { if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; }     \
        !          1315: /*  for OLD_INDEXING                                                   \
        !          1316:       else if (GET_CODE (addr) == PLUS)                                        \
        !          1317:        {                                                               \
        !          1318:          if (GET_CODE (XEXP (addr, 0)) == REG)                         \
        !          1319:            {                                                           \
        !          1320:              reg2 = XEXP (addr, 0);                                    \
        !          1321:              addr = XEXP (addr, 1);                                    \
        !          1322:            }                                                           \
        !          1323:          else if (GET_CODE (XEXP (addr, 1)) == REG)                    \
        !          1324:            {                                                           \
        !          1325:              reg2 = XEXP (addr, 1);                                    \
        !          1326:              addr = XEXP (addr, 0);                                    \
        !          1327:            }                                                           \
        !          1328:        }                                                               \
        !          1329:   */                                                                   \
        !          1330:       if (offset != 0) { if (addr != 0) abort (); addr = offset; }     \
        !          1331:       if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND                     \
        !          1332:                    || GET_CODE (reg1) == MULT))                        \
        !          1333:          || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2))))         \
        !          1334:        { breg = reg2; ireg = reg1; }                                   \
        !          1335:       else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1)))                \
        !          1336:        { breg = reg1; ireg = reg2; }                                   \
        !          1337:       if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF)      \
        !          1338:         { int scale = 1;                                               \
        !          1339:          if (GET_CODE (ireg) == MULT)                                  \
        !          1340:            { scale = INTVAL (XEXP (ireg, 1));                          \
        !          1341:              ireg = XEXP (ireg, 0); }                                  \
        !          1342:          if (GET_CODE (ireg) == SIGN_EXTEND)                           \
        !          1343:            fprintf (FILE, "pc@(L%d-LI%d-2:B)[%s:W",                    \
        !          1344:                     CODE_LABEL_NUMBER (XEXP (addr, 0)),                \
        !          1345:                     CODE_LABEL_NUMBER (XEXP (addr, 0)),                \
        !          1346:                     reg_names[REGNO (XEXP (ireg, 0))]);                \
        !          1347:          else                                                          \
        !          1348:            fprintf (FILE, "pc@(L%d-LI%d-2:B)[%s:L",                    \
        !          1349:                     CODE_LABEL_NUMBER (XEXP (addr, 0)),                \
        !          1350:                     CODE_LABEL_NUMBER (XEXP (addr, 0)),                \
        !          1351:                     reg_names[REGNO (ireg)]);                          \
        !          1352:          fprintf (FILE, ":%c", sz[scale]);                             \
        !          1353:          putc (']', FILE);                                             \
        !          1354:          break; }                                                      \
        !          1355:       if (breg != 0 && ireg == 0 && GET_CODE (addr) == LABEL_REF)      \
        !          1356:         { fprintf (FILE, "pc@(L%d-LI%d-2:B)[%s:L:B]",                  \
        !          1357:                   CODE_LABEL_NUMBER (XEXP (addr, 0)),                  \
        !          1358:                   CODE_LABEL_NUMBER (XEXP (addr, 0)),                  \
        !          1359:                   reg_names[REGNO (breg)]);                            \
        !          1360:          break; }                                                      \
        !          1361:       if (ireg != 0 || breg != 0)                                      \
        !          1362:        { int scale = 1;                                                \
        !          1363:          if (breg == 0)                                                \
        !          1364:            abort ();                                                   \
        !          1365:          if (addr && GET_CODE (addr) == LABEL_REF) abort ();           \
        !          1366:          fprintf (FILE, "%s@", reg_names[REGNO (breg)]);               \
        !          1367:          if (addr != 0) {                                              \
        !          1368:             putc( '(', FILE );                                         \
        !          1369:            output_addr_const (FILE, addr);                             \
        !          1370:             if (ireg != 0) {                                           \
        !          1371:               if (GET_CODE(addr) == CONST_INT) {                       \
        !          1372:                 int size_of = 1, val = INTVAL(addr);                   \
        !          1373:                 if (val < -0x8000 || val >= 0x8000)                    \
        !          1374:                    size_of = 4;                                        \
        !          1375:                 else if (val < -0x80 || val >= 0x80)                   \
        !          1376:                    size_of = 2;                                                \
        !          1377:                 fprintf(FILE, ":%c", sz[size_of]);                     \
        !          1378:               }                                                                \
        !          1379:               else                                                     \
        !          1380:                 fprintf(FILE, ":L"); }                                         \
        !          1381:             putc( ')', FILE ); }                                       \
        !          1382:          if (ireg != 0) {                                              \
        !          1383:            putc ('[', FILE);                                           \
        !          1384:            if (ireg != 0 && GET_CODE (ireg) == MULT)                   \
        !          1385:              { scale = INTVAL (XEXP (ireg, 1));                        \
        !          1386:                ireg = XEXP (ireg, 0); }                                \
        !          1387:            if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND)            \
        !          1388:              fprintf (FILE, "%s:W", reg_names[REGNO (XEXP (ireg, 0))]);        \
        !          1389:            else if (ireg != 0)                                         \
        !          1390:              fprintf (FILE, "%s:L", reg_names[REGNO (ireg)]);          \
        !          1391:            fprintf (FILE, ":%c", sz[scale]);                           \
        !          1392:            putc (']', FILE);                                           \
        !          1393:           }                                                            \
        !          1394:          break;                                                        \
        !          1395:        }                                                               \
        !          1396:       else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF)              \
        !          1397:        { fprintf (FILE, "pc@(L%d-LI%d-2:B)[%s:L:B]",                   \
        !          1398:                   CODE_LABEL_NUMBER (XEXP (addr, 0)),                  \
        !          1399:                   CODE_LABEL_NUMBER (XEXP (addr, 0)),                  \
        !          1400:                   reg_names[REGNO (reg1)]);                            \
        !          1401:          break; }                                                      \
        !          1402:     default:                                                           \
        !          1403:       if (GET_CODE (addr) == CONST_INT                                 \
        !          1404:          && INTVAL (addr) < 0x8000                                     \
        !          1405:          && INTVAL (addr) >= -0x8000)                                  \
        !          1406:        fprintf (FILE, "%d:W", INTVAL (addr));                          \
        !          1407:       else                                                             \
        !          1408:         output_addr_const (FILE, addr);                                        \
        !          1409:     }}
        !          1410: 
        !          1411: /*
        !          1412: Local variables:
        !          1413: version-control: t
        !          1414: End:
        !          1415: */
        !          1416: 

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