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Annotation of gcc/config/gmicro.h, revision 1.1

1.1     ! root        1: /* Definitions of target machine for GNU compiler.  Gmicro (TRON) version.
        !             2:    Ported by Masanobu Yuhara, Fujitsu Laboratories LTD.
        !             3:    ([email protected])
        !             4: 
        !             5:    Copyright (C) 1987, 1988, 1989 Free Software Foundation, Inc.
        !             6: 
        !             7: This file is part of GNU CC.
        !             8: 
        !             9: GNU CC is free software; you can redistribute it and/or modify
        !            10: it under the terms of the GNU General Public License as published by
        !            11: the Free Software Foundation; either version 2, or (at your option)
        !            12: any later version.
        !            13: 
        !            14: GNU CC is distributed in the hope that it will be useful,
        !            15: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            17: GNU General Public License for more details.
        !            18: 
        !            19: Among other things, the copyright
        !            20: notice and this notice must be preserved on all copies.
        !            21: 
        !            22: You should have received a copy of the GNU General Public License
        !            23: along with GNU CC; see the file COPYING.  If not, write to
        !            24: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
        !            25: */
        !            26: 
        !            27: 
        !            28: /* Note that some other tm.h files include this one and then override
        !            29:    many of the definitions that relate to assembler syntax.  */
        !            30: 
        !            31: 
        !            32: /* Names to predefine in the preprocessor for this target machine.  */
        !            33: 
        !            34: #define CPP_PREDEFINES "-Dgmicro"
        !            35: 
        !            36: /* #define CPP_SPEC    ** currently not defined **/
        !            37: 
        !            38: /* #define CC1_SPEC    ** currently not defined **/
        !            39: 
        !            40: 
        !            41: /* Print subsidiary information on the compiler version in use.  */
        !            42: /*
        !            43: #define TARGET_VERSION fprintf (stderr, " (Gmicro syntax)");
        !            44: */
        !            45: 
        !            46: /* Run-time compilation parameters selecting different hardware subsets.  */
        !            47: 
        !            48: extern int target_flags;
        !            49: 
        !            50: /* Macros used in the machine description to test the flags.  */
        !            51: 
        !            52: /* Compile for a Gmicro/300.  */
        !            53: #define TARGET_G300 (target_flags & 1)
        !            54: /* Compile for a Gmicro/200. */
        !            55: #define TARGET_G200 (target_flags & 2)
        !            56: /* Compile for a Gmicro/100. */
        !            57: #define TARGET_G100 (target_flags & 4)
        !            58: 
        !            59: /* Compile FPU insns for floating point (not library calls).  */
        !            60: #define TARGET_FPU (target_flags & 8)
        !            61: 
        !            62: /* Pop up arguments by called function. */
        !            63: #define TARGET_RTD (target_flags & 0x10)
        !            64: 
        !            65: /* Compile passing first args in regs 0 and 1.
        !            66:    This exists only to test compiler features that will be needed for
        !            67:    RISC chips. It is not usable and is not intended to be usable on
        !            68:    this cpu ;-< */
        !            69: #define TARGET_REGPARM (target_flags & 0x20)
        !            70: 
        !            71: #define TARGET_BITFIELD (target_flags & 0x40)
        !            72: 
        !            73: #define TARGET_NEWRETURN (target_flags & 0x80)
        !            74: 
        !            75: /* Do not expand __builtin_smov (strcpy) to multiple movs.
        !            76:    Use the smov instruction. */
        !            77: #define TARGET_FORCE_SMOV (target_flags & 0x100)
        !            78: 
        !            79: /* default options are -m300, -mFPU,
        !            80:    with bitfield instructions added because it won't always work otherwise.
        !            81:    If there are versions of the gmicro that don't support bitfield instructions
        !            82:    then it will take some thinking to figure out how to make them work.  */
        !            83: #define TARGET_DEFAULT 0x49
        !            84: 
        !            85: /* Macro to define tables used to set the flags.
        !            86:    This is a list in braces of pairs in braces,
        !            87:    each pair being { "NAME", VALUE }
        !            88:    where VALUE is the bits to set or minus the bits to clear.
        !            89:    An empty string NAME is used to identify the default VALUE.  */
        !            90: 
        !            91: #define TARGET_SWITCHES  \
        !            92:   { { "g300", 1},                              \
        !            93:     { "g200", 2},                              \
        !            94:     { "g100", 4},                              \
        !            95:     { "fpu", 8},                               \
        !            96:     { "soft-float", -8},                       \
        !            97:     { "rtd", 0x10},                            \
        !            98:     { "no-rtd", -0x10},                                \
        !            99:     { "regparm", 0x20},                                \
        !           100:     { "no-regparm", -0x20},                    \
        !           101: #if 0 /* Since we don't define PCC_BITFIELD_TYPE_MATTERS or use a large
        !           102:         STRUCTURE_SIZE_BOUNDARY, we must have bitfield instructions.  */
        !           103:     { "bitfield", 0x40},                       \
        !           104:     { "no-bitfield", -0x40},                   \
        !           105: #endif
        !           106:     { "newreturn", 0x80},                      \
        !           107:     { "no-newreturn", -0x80},                  \
        !           108:     { "force-smov", 0x100},                    \
        !           109:     { "no-force-smov", -0x100},                        \
        !           110:     { "", TARGET_DEFAULT}}
        !           111: 
        !           112: 
        !           113: /* Blow away G100 flag silently off TARGET_fpu (since we can't clear
        !           114:    any bits in TARGET_SWITCHES above) */
        !           115: #define OVERRIDE_OPTIONS               \
        !           116: {                                      \
        !           117:   if (TARGET_G100) target_flags &= ~8; \
        !           118: }
        !           119: 
        !           120: /* target machine storage layout */
        !           121: 
        !           122: /* Define this if most significant bit is lowest numbered
        !           123:    in instructions that operate on numbered bit-fields.
        !           124:    This is true for Gmicro insns.
        !           125:    We make it true always by avoiding using the single-bit insns
        !           126:    except in special cases with constant bit numbers.  */
        !           127: #define BITS_BIG_ENDIAN 1
        !           128: 
        !           129: /* Define this if most significant byte of a word is the lowest numbered.  */
        !           130: /* That is true on the Gmicro.  */
        !           131: #define BYTES_BIG_ENDIAN 1
        !           132: 
        !           133: /* Define this if most significant word of a multiword number is the lowest
        !           134:    numbered.  */
        !           135: /* For Gmicro we can decide arbitrarily
        !           136:    since there are no machine instructions for them.  ????? */
        !           137: #define WORDS_BIG_ENDIAN 0
        !           138: 
        !           139: /* number of bits in an addressible storage unit */
        !           140: #define BITS_PER_UNIT 8
        !           141: 
        !           142: /* Width in bits of a "word", which is the contents of a machine register. */
        !           143: #define BITS_PER_WORD 32
        !           144: 
        !           145: /* Width of a word, in units (bytes).  */
        !           146: #define UNITS_PER_WORD 4
        !           147: 
        !           148: /* Width in bits of a pointer.
        !           149:    See also the macro `Pmode' defined below.  */
        !           150: #define POINTER_SIZE 32
        !           151: 
        !           152: /* Allocation boundary (in *bits*) for storing arguments in argument list.  */
        !           153: #define PARM_BOUNDARY 32
        !           154: 
        !           155: /* Boundary (in *bits*) on which stack pointer should be aligned.  */
        !           156: #define STACK_BOUNDARY 32
        !           157: 
        !           158: /* Allocation boundary (in *bits*) for the code of a function.  */
        !           159: /* Instructions of the Gmicro should be on half-word boundary */
        !           160: /* But word boundary gets better performance */
        !           161: #define FUNCTION_BOUNDARY 32
        !           162: 
        !           163: /* Alignment of field after `int : 0' in a structure.  */
        !           164: #define EMPTY_FIELD_BOUNDARY 32
        !           165: 
        !           166: /* No data type wants to be aligned rounder than this. */
        !           167: /* This is not necessarily 32 on the Gmicro */
        !           168: #define BIGGEST_ALIGNMENT 32
        !           169: 
        !           170: /* Define this if move instructions will actually fail to work
        !           171:    when given unaligned data.  */
        !           172: /* Unaligned data is allowed on Gmicro, though the access is slow. */
        !           173: /* But now STRICT is defined */
        !           174: #define STRICT_ALIGNMENT
        !           175: 
        !           176: /* Make strings word-aligned so strcpy from constants will be faster.  */
        !           177: #define CONSTANT_ALIGNMENT(EXP, ALIGN)  \
        !           178:   (TREE_CODE (EXP) == STRING_CST       \
        !           179:    && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
        !           180: 
        !           181: /* Make arrays of chars word-aligned for the same reasons.  */
        !           182: #define DATA_ALIGNMENT(TYPE, ALIGN)            \
        !           183:   (TREE_CODE (TYPE) == ARRAY_TYPE              \
        !           184:    && TYPE_MODE (TREE_TYPE (TYPE)) == QImode   \
        !           185:    && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
        !           186: 
        !           187: /* Define number of bits in most basic integer type.
        !           188:    (If undefined, default is BITS_PER_WORD).  */
        !           189: #define INT_TYPE_SIZE 32
        !           190: 
        !           191: /* #define PCC_BITFIELD_TYPE_MATTERS 1 ????? */
        !           192: 
        !           193: /* #define CHECK_FLOAT_VALUE (MODE, VALUE) ????? */
        !           194: 
        !           195: 
        !           196: /* Standard register usage.  */
        !           197: 
        !           198: /* Number of actual hardware registers.
        !           199:    The hardware registers are assigned numbers for the compiler
        !           200:    from 0 to just below FIRST_PSEUDO_REGISTER.
        !           201:    All registers that the compiler knows about must be given numbers,
        !           202:    even those that are not normally considered general registers.
        !           203:    For the Gmicro, we give the general registers numbers 0-15,
        !           204:    and the FPU floating point registers numbers 16-31.  */
        !           205: #define FIRST_PSEUDO_REGISTER 32
        !           206: 
        !           207: /* 1 for registers that have pervasive standard uses
        !           208:    and are not available for the register allocator.
        !           209:    On the Gmicro, the stack pointer and the frame pointer are
        !           210:    such registers.  */
        !           211: /* frame pointer is not indicated as fixed, because fp may be used freely
        !           212:    when a frame is not built. */
        !           213: #define FIXED_REGISTERS  \
        !           214:  {0, 0, 0, 0, 0, 0, 0, 0, \
        !           215:   0, 0, 0, 0, 0, 0, 0, 1, \
        !           216:   /* FPU registers.  */   \
        !           217:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           218:   0, 0, 0, 0, 0, 0, 0, 0, }
        !           219: 
        !           220: /* 1 for registers not available across function calls.
        !           221:    These must include the FIXED_REGISTERS and also any
        !           222:    registers that can be used without being saved.
        !           223:    The latter must include the registers where values are returned
        !           224:    and the register where structure-value addresses are passed.
        !           225:    Aside from that, you can include as many other registers as you like.  */
        !           226: #define CALL_USED_REGISTERS \
        !           227:  {1, 1, 1, 1, 0, 0, 0, 0, \
        !           228:   0, 0, 0, 0, 0, 0, 0, 1, \
        !           229:   /* FPU registers.  */   \
        !           230:   1, 1, 1, 1, 0, 0, 0, 0, \
        !           231:   0, 0, 0, 0, 0, 0, 0, 0, }
        !           232: 
        !           233: 
        !           234: /* Make sure everything's fine if we *don't* have a given processor.
        !           235:    This assumes that putting a register in fixed_regs will keep the
        !           236:    compilers mitt's completely off it.  We don't bother to zero it out
        !           237:    of register classes.  If TARGET_FPU is not set,
        !           238:    the compiler won't touch since no instructions that use these
        !           239:    registers will be valid.  */
        !           240: /*  This Macro is not defined now.
        !           241:     #define CONDITIONAL_REGISTER_USAGE */
        !           242: 
        !           243: /* The Gmicro has no overlapping register */
        !           244: /* #define OVERLAPPING_REGNO_P(REGNO) */
        !           245: 
        !           246: /* #define INSN_CLOBBERS_REGNO_P(INSN,REGNO)  */
        !           247: /* #define PRESERVE_DEATH_INFO_REGNO_P(REGNO)  */
        !           248: 
        !           249: /* Return number of consecutive hard regs needed starting at reg REGNO
        !           250:    to hold something of mode MODE.
        !           251:    This is ordinarily the length in words of a value of mode MODE
        !           252:    but can be less for certain modes in special long registers.
        !           253: 
        !           254:    On the Gmicro, ordinary registers hold 32 bits worth;
        !           255:    for the Gmicro/FPU registers, a single register is always enough for
        !           256:    anything that can be stored in them at all.  */
        !           257: #define HARD_REGNO_NREGS(REGNO, MODE)   \
        !           258:   ((REGNO) >= 16 ? 1                           \
        !           259:    : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           260: 
        !           261: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
        !           262:    On the Gmicro, the cpu registers can hold any mode but the FPU registers
        !           263:    can hold only SFmode or DFmode.  And the FPU registers can't hold anything
        !           264:    if FPU use is disabled. */
        !           265: #define HARD_REGNO_MODE_OK(REGNO, MODE) \
        !           266:   ((REGNO) < 16                                                                \
        !           267:    || ((REGNO) < 32                                                    \
        !           268:        ? TARGET_FPU && (GET_MODE_CLASS (MODE) == MODE_FLOAT ||         \
        !           269:                        GET_MODE_CLASS (MODE) == MODE_COMPLEX_FLOAT)    \
        !           270:        : 0 ))
        !           271: 
        !           272: /* Value is 1 if it is a good idea to tie two pseudo registers
        !           273:    when one has mode MODE1 and one has mode MODE2.
        !           274:    If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
        !           275:    for any hard reg, then this must be 0 for correct output.  */
        !           276: #define MODES_TIEABLE_P(MODE1, MODE2)                  \
        !           277:   (! TARGET_FPU                                                \
        !           278:    || ((GET_MODE_CLASS (MODE1) == MODE_FLOAT ||                \
        !           279:        GET_MODE_CLASS (MODE1) == MODE_COMPLEX_FLOAT)   \
        !           280:        == ((MODE2) == SFmode || (MODE2) == DFmode)))
        !           281: 
        !           282: /* Specify the registers used for certain standard purposes.
        !           283:    The values of these macros are register numbers.  */
        !           284: 
        !           285: /* Gmicro pc isn't overloaded on a register.  */
        !           286: /* #define PC_REGNUM  */
        !           287: 
        !           288: /* Register to use for pushing function arguments.  */
        !           289: #define STACK_POINTER_REGNUM 15
        !           290: 
        !           291: /* Base register for access to local variables of the function.  */
        !           292: #define FRAME_POINTER_REGNUM 14
        !           293: 
        !           294: /* Value should be nonzero if functions must have frame pointers.
        !           295:    Zero means the frame pointer need not be set up (and parms
        !           296:    may be accessed via the stack pointer) in functions that seem suitable.
        !           297:    This is computed in `reload', in reload1.c.  */
        !           298: #define FRAME_POINTER_REQUIRED 0
        !           299: 
        !           300: /* Base register for access to arguments of the function.  */
        !           301: /* The Gmicro does not have hardware ap. Fp is treated as ap */
        !           302: #define ARG_POINTER_REGNUM 14
        !           303: 
        !           304: /* Register in which static-chain is passed to a function.  */
        !           305: #define STATIC_CHAIN_REGNUM 0
        !           306: 
        !           307: /* Register in which address to store a structure value
        !           308:    is passed to a function.  */
        !           309: #define STRUCT_VALUE_REGNUM 1
        !           310: 
        !           311: /* Define the classes of registers for register constraints in the
        !           312:    machine description.  Also define ranges of constants.
        !           313: 
        !           314:    One of the classes must always be named ALL_REGS and include all hard regs.
        !           315:    If there is more than one class, another class must be named NO_REGS
        !           316:    and contain no registers.
        !           317: 
        !           318:    The name GENERAL_REGS must be the name of a class (or an alias for
        !           319:    another name such as ALL_REGS).  This is the class of registers
        !           320:    that is allowed by "g" or "r" in a register constraint.
        !           321:    Also, registers outside this class are allocated only when
        !           322:    instructions express preferences for them.
        !           323: 
        !           324:    The classes must be numbered in nondecreasing order; that is,
        !           325:    a larger-numbered class must never be contained completely
        !           326:    in a smaller-numbered class.
        !           327: 
        !           328:    For any two classes, it is very desirable that there be another
        !           329:    class that represents their union.  */
        !           330: 
        !           331: /* The Gmicro has two kinds of registers, so four classes would be
        !           332:    a complete set.  */
        !           333: 
        !           334: enum reg_class { NO_REGS, FPU_REGS, GENERAL_REGS, ALL_REGS, LIM_REG_CLASSES };
        !           335: 
        !           336: #define N_REG_CLASSES (int) LIM_REG_CLASSES
        !           337: 
        !           338: /* Give names of register classes as strings for dump file.   */
        !           339: 
        !           340: #define REG_CLASS_NAMES \
        !           341:    { "NO_REGS", "FPU_REGS", "GENERAL_REGS", "ALL_REGS" }
        !           342: 
        !           343: /* Define which registers fit in which classes.
        !           344:    This is an initializer for a vector of HARD_REG_SET
        !           345:    of length N_REG_CLASSES.  */
        !           346: 
        !           347: #define REG_CLASS_CONTENTS \
        !           348: {                                              \
        !           349:      0,                        /* NO_REGS */           \
        !           350:      0xffff0000,       /* FPU_REGS */          \
        !           351:      0x0000ffff,       /* GENERAL_REGS */      \
        !           352:      0xffffffff                /* ALL_REGS */          \
        !           353: }
        !           354: 
        !           355: /* The same information, inverted:
        !           356:    Return the class number of the smallest class containing
        !           357:    reg number REGNO.  This could be a conditional expression
        !           358:    or could index an array.  */
        !           359: 
        !           360: extern enum reg_class regno_reg_class[];
        !           361: #define REGNO_REG_CLASS(REGNO) ( (REGNO < 16) ? GENERAL_REGS : FPU_REGS )
        !           362: 
        !           363: /* The class value for index registers, and the one for base regs.  */
        !           364: 
        !           365: #define INDEX_REG_CLASS GENERAL_REGS
        !           366: #define BASE_REG_CLASS  GENERAL_REGS
        !           367:   
        !           368: /* Get reg_class from a letter such as appears in the machine description.
        !           369:    We do a trick here to modify the effective constraints on the
        !           370:    machine description; we zorch the constraint letters that aren't
        !           371:    appropriate for a specific target.  This allows us to guarantee
        !           372:    that a specific kind of register will not be used for a given taget
        !           373:    without fiddling with the register classes above. */
        !           374: 
        !           375: #define REG_CLASS_FROM_LETTER(C) \
        !           376:   ((C) == 'r' ? GENERAL_REGS :                 \
        !           377:    ((C) == 'f' ? (TARGET_FPU ? FPU_REGS : NO_REGS) :   \
        !           378:      NO_REGS))
        !           379: 
        !           380: /* The letters I, J, K, L and M in a register constraint string
        !           381:    can be used to stand for particular ranges of immediate operands.
        !           382:    This macro defines what the ranges are.
        !           383:    C is the letter, and VALUE is a constant value.
        !           384:    Return 1 if VALUE is in the range specified by C.
        !           385: 
        !           386:    For the Gmicro, all immediate value optimizations are done 
        !           387:    by assember, so no machine dependent definition is necessary ??? */
        !           388: 
        !           389: /* #define CONST_OK_FOR_LETTER_P(VALUE, C) ((C) == 'I') */
        !           390: #define CONST_OK_FOR_LETTER_P(VALUE, C) 0
        !           391: 
        !           392: /*
        !           393:  * The letters G defines all of the floating constants tha are *NOT*
        !           394:  * Gmicro-FPU constant.
        !           395:  */
        !           396: 
        !           397: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
        !           398:     ((C) == 'F' ||                             \
        !           399:      (C) == 'G' && !(TARGET_FPU && standard_fpu_constant_p (VALUE)))
        !           400: 
        !           401: /* Given an rtx X being reloaded into a reg required to be
        !           402:    in class CLASS, return the class of reg to actually use.
        !           403:    In general this is just CLASS; but on some machines
        !           404:    in some cases it is preferable to use a more restrictive class. */
        !           405: /* On the Gmicro series, there is no restricton on GENERAL_REGS,
        !           406:    so CLASS is returned. I do not know whether I should treat FPU_REGS
        !           407:    specially or not (at least, m68k does not). */
        !           408: 
        !           409: #define PREFERRED_RELOAD_CLASS(X,CLASS) CLASS
        !           410: 
        !           411: /* Return the maximum number of consecutive registers
        !           412:    needed to represent mode MODE in a register of class CLASS.  */
        !           413: /* On the Gmicro, this is the size of MODE in words,
        !           414:    except in the FPU regs, where a single reg is always enough.  */
        !           415: #define CLASS_MAX_NREGS(CLASS, MODE)   \
        !           416:  ((CLASS) == FPU_REGS ? \
        !           417:    1 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           418: 
        !           419: /* Stack layout; function entry, exit and calling.  */
        !           420: 
        !           421: /* Define this if pushing a word on the stack
        !           422:    makes the stack pointer a smaller address.  */
        !           423: #define STACK_GROWS_DOWNWARD
        !           424: 
        !           425: /* Define this if the nominal address of the stack frame
        !           426:    is at the high-address end of the local variables;
        !           427:    that is, each additional local variable allocated
        !           428:    goes at a more negative offset in the frame.  */
        !           429: #define FRAME_GROWS_DOWNWARD
        !           430: 
        !           431: /* Offset within stack frame to start allocating local variables at.
        !           432:    If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
        !           433:    first local allocated.  Otherwise, it is the offset to the BEGINNING
        !           434:    of the first local allocated.  */
        !           435: /* On the Gmicro, FP points to the old FP and the first local variables are
        !           436:    at (FP - 4). */
        !           437: #define STARTING_FRAME_OFFSET 0
        !           438: 
        !           439: /* If we generate an insn to push BYTES bytes,
        !           440:    this says how many the stack pointer really advances by. */
        !           441: /* On the Gmicro, sp is decrimented by the exact size of the operand */
        !           442: #define PUSH_ROUNDING(BYTES) (BYTES)
        !           443: 
        !           444: /* Offset of first parameter from the argument pointer register value.  */
        !           445: /* On the Gmicro, the first argument is found at (ap + 8) where ap is fp. */
        !           446: #define FIRST_PARM_OFFSET(FNDECL) 8
        !           447: 
        !           448: /* Value is the number of byte of arguments automatically
        !           449:    popped when returning from a subroutine call.
        !           450:    FUNTYPE is the data type of the function (as a tree),
        !           451:    or for a library call it is an identifier node for the subroutine name.
        !           452:    SIZE is the number of bytes of arguments passed on the stack. 
        !           453: 
        !           454:    On the Gmicro, the EXITD insn may be used to pop them if the number
        !           455:    of args is fixed, but if the number is variable then the caller must pop
        !           456:    them all. The adjsp operand of the EXITD insn can't be used for library
        !           457:    calls now because the library is compiled with the standard compiler.
        !           458:    Use of adjsp operand is a selectable option, since it is incompatible with
        !           459:    standard Unix calling sequences.  If the option is not selected,
        !           460:    the caller must always pop the args.
        !           461:    On the m68k this is an RTD option, so I use the same name
        !           462:    for the Gmicro. The option name may be changed in the future. */
        !           463: 
        !           464: #define RETURN_POPS_ARGS(FUNTYPE,SIZE)   \
        !           465:   ((TARGET_RTD && TREE_CODE (FUNTYPE) != IDENTIFIER_NODE       \
        !           466:     && (TYPE_ARG_TYPES (FUNTYPE) == 0                          \
        !           467:        || (TREE_VALUE (tree_last (TYPE_ARG_TYPES (FUNTYPE)))   \
        !           468:            = void_type_node)))                                 \
        !           469:    ? (SIZE) : 0)
        !           470: 
        !           471: /* Define how to find the value returned by a function.
        !           472:    VALTYPE is the data type of the value (as a tree).
        !           473:    If the precise function being called is known, FUNC is its FUNCTION_DECL;
        !           474:    otherwise, FUNC is 0.  */
        !           475: 
        !           476: /* On the Gmicro the floating return value is in fr0 not r0.  */
        !           477: 
        !           478: #define FUNCTION_VALUE(VALTYPE, FUNC)  LIBCALL_VALUE (TYPE_MODE (VALTYPE))
        !           479: 
        !           480: /* Define how to find the value returned by a library function
        !           481:    assuming the value has mode MODE.  */
        !           482: 
        !           483: #define LIBCALL_VALUE(MODE)    \
        !           484:   (gen_rtx (REG, (MODE),               \
        !           485:     ((TARGET_FPU && ((MODE) == SFmode || (MODE) == DFmode)) ? 16 : 0)))
        !           486: 
        !           487: 
        !           488: /* 1 if N is a possible register number for a function value.
        !           489:    On the Gmicro, r0 and fp0 are the possible registers.  */
        !           490: 
        !           491: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0 || (N) == 16)
        !           492: 
        !           493: /* Define this if PCC uses the nonreentrant convention for returning
        !           494:    structure and union values.  */
        !           495: 
        !           496: #define PCC_STATIC_STRUCT_RETURN
        !           497: 
        !           498: /* 1 if N is a possible register number for function argument passing.
        !           499:    On the Gmicro, no registers are used in this way.  */
        !           500: /* Really? For the performance improvement, registers should be used !! */
        !           501: 
        !           502: #define FUNCTION_ARG_REGNO_P(N) 0
        !           503: 
        !           504: /* Define a data type for recording info about an argument list
        !           505:    during the scan of that argument list.  This data type should
        !           506:    hold all necessary information about the function itself
        !           507:    and about the args processed so far, enough to enable macros
        !           508:    such as FUNCTION_ARG to determine where the next arg should go.
        !           509: 
        !           510:    On the Gmicro, this is a single integer, which is a number of bytes
        !           511:    of arguments scanned so far.  */
        !           512: 
        !           513: #define CUMULATIVE_ARGS int
        !           514: 
        !           515: /* Initialize a variable CUM of type CUMULATIVE_ARGS
        !           516:    for a call to a function whose data type is FNTYPE.
        !           517:    For a library call, FNTYPE is 0.
        !           518: 
        !           519:    On the Gmicro, the offset starts at 0.  */
        !           520: 
        !           521: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME)       \
        !           522:  ((CUM) = 0)
        !           523: 
        !           524: /* Update the data in CUM to advance over an argument
        !           525:    of mode MODE and data type TYPE.
        !           526:    (TYPE is null for libcalls where that information may not be available.)  */
        !           527: 
        !           528: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)   \
        !           529:  ((CUM) += ((MODE) != BLKmode                  \
        !           530:            ? (GET_MODE_SIZE (MODE) + 3) & ~3   \
        !           531:            : (int_size_in_bytes (TYPE) + 3) & ~3))
        !           532: 
        !           533: /* Define where to put the arguments to a function.
        !           534:    Value is zero to push the argument on the stack,
        !           535:    or a hard register in which to store the argument.
        !           536: 
        !           537:    MODE is the argument's machine mode.
        !           538:    TYPE is the data type of the argument (as a tree).
        !           539:     This is null for libcalls where that information may
        !           540:     not be available.
        !           541:    CUM is a variable of type CUMULATIVE_ARGS which gives info about
        !           542:     the preceding args and about the function being called.
        !           543:    NAMED is nonzero if this argument is a named parameter
        !           544:     (otherwise it is an extra parameter matching an ellipsis).  */
        !           545: 
        !           546: /* On the Gmicro all args are pushed, except if -mregparm is specified
        !           547:    then the first two words of arguments are passed in d0, d1.
        !           548:    *NOTE* -mregparm does not work.
        !           549:    It exists only to test register calling conventions.  */
        !           550: 
        !           551: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
        !           552: ((TARGET_REGPARM && (CUM) < 8) ? gen_rtx (REG, (MODE), (CUM) / 4) : 0)
        !           553: 
        !           554: /* For an arg passed partly in registers and partly in memory,
        !           555:    this is the number of registers used.
        !           556:    For args passed entirely in registers or entirely in memory, zero.  */
        !           557: 
        !           558: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
        !           559: ((TARGET_REGPARM && (CUM) < 8                                  \
        !           560:   && 8 < ((CUM) + ((MODE) == BLKmode                           \
        !           561:                      ? int_size_in_bytes (TYPE)                \
        !           562:                      : GET_MODE_SIZE (MODE))))                 \
        !           563:  ? 2 - (CUM) / 4 : 0)
        !           564: 
        !           565: /* The following macro is defined to output register list.
        !           566:    The LSB of Mask is the lowest number register.
        !           567:    Regoff is MY_GREG_OFF or MY_FREG_OFF.
        !           568:    Do NOT use <i> in File, Mask, Regoff !!
        !           569:    Should be changed from macros to functions.    M.Yuhara */
        !           570: 
        !           571: #define MY_GREG_OFF 0
        !           572: #define MY_FREG_OFF 16
        !           573: 
        !           574: #define MY_PRINT_MASK(File, Mask, Regoff)              \
        !           575: {                                                      \
        !           576:     int i, first = -1;                                 \
        !           577:     if ((Mask) == 0) {                                 \
        !           578:        fprintf(File, "#0");                            \
        !           579:     } else {                                           \
        !           580:        fprintf(File, "(");                             \
        !           581:        for (i = 0; i < 16; i++) {                      \
        !           582:            if ( (Mask) & (1 << i) ) {                  \
        !           583:                if (first < 0) {                        \
        !           584:                    if (first == -2) {                  \
        !           585:                        fprintf(File, ",");             \
        !           586:                    }                                   \
        !           587:                    first = i;                          \
        !           588:                    fprintf(File, "%s", reg_names[Regoff + i]); \
        !           589:                }                                       \
        !           590:            } else if (first >= 0) {                    \
        !           591:                if (i > first + 1) {                    \
        !           592:                    fprintf(File, "-%s", reg_names[Regoff + i - 1]);    \
        !           593:                }                                       \
        !           594:                first = -2;                             \
        !           595:            }                                           \
        !           596:        }                                               \
        !           597:        if ( (first >= 0) && (first != 15) )            \
        !           598:            fprintf(File, "-%s", reg_names[Regoff + 15]);\
        !           599:        fprintf(File, ")");                             \
        !           600:     }                                                  \
        !           601: }
        !           602: 
        !           603: 
        !           604: #define MY_PRINT_ONEREG_L(FILE,MASK)           \
        !           605: {   register int i;                            \
        !           606:     for (i = 0; i < 16; i++)                   \
        !           607:        if ( (1 << i) & (MASK)) {               \
        !           608:            fprintf(FILE, "%s", reg_names[i]);  \
        !           609:            (MASK) &= ~(1 << i);                \
        !           610:            break;                              \
        !           611:        }                                       \
        !           612: }
        !           613: 
        !           614: 
        !           615: #define MY_PRINT_ONEREG_H(FILE,MASK)           \
        !           616: {   register int i;                            \
        !           617:     for (i = 15; i >= 0; i--)                  \
        !           618:        if ( (1 << i) & (MASK)) {               \
        !           619:            fprintf(FILE, "%s", reg_names[i]);  \
        !           620:            (MASK) &= ~(1 << i);                \
        !           621:            break;                              \
        !           622:        }                                       \
        !           623: }
        !           624: 
        !           625: /* This macro generates the assembly code for function entry.
        !           626:    FILE is a stdio stream to output the code to.
        !           627:    SIZE is an int: how many units of temporary storage to allocate.
        !           628:    Refer to the array `regs_ever_live' to determine which registers
        !           629:    to save; `regs_ever_live[I]' is nonzero if register number I
        !           630:    is ever used in the function.  This macro is responsible for
        !           631:    knowing which registers should not be saved even if used.  */
        !           632: 
        !           633: /* The next macro needs much optimization !!
        !           634:    M.Yuhara */
        !           635: 
        !           636: #define FUNCTION_PROLOGUE(FILE, SIZE)     \
        !           637: { register int regno;                                          \
        !           638:   register int mask = 0;                                       \
        !           639:   register int nregs = 0;                                      \
        !           640:   static char *reg_names[] = REGISTER_NAMES;                   \
        !           641:   extern char call_used_regs[];                                        \
        !           642:   int fsize = ((SIZE) + 3) & -4;                               \
        !           643:   for (regno = 0; regno < 16; regno++)                         \
        !           644:     if (regs_ever_live[regno] && !call_used_regs[regno]) {     \
        !           645:        mask |= (1 << regno);                                   \
        !           646:        nregs++;                                                \
        !           647:     }                                                          \
        !           648:   if (frame_pointer_needed) {                                  \
        !           649:     mask &= ~(1 << FRAME_POINTER_REGNUM);                      \
        !           650:     if (nregs > 4) {                                           \
        !           651:        fprintf(FILE, "\tenter.w #%d,", fsize);                 \
        !           652:        MY_PRINT_MASK(FILE, mask, MY_GREG_OFF);                 \
        !           653:        fprintf(FILE,"\n");                                     \
        !           654:     } else {                                                   \
        !           655:        fprintf(FILE, "\tmov.w fp,@-sp\n");                     \
        !           656:        fprintf(FILE, "\tmov.w sp,fp\n");                       \
        !           657:        if (fsize > 0)                                          \
        !           658:            myoutput_sp_adjust(FILE, "sub", fsize);             \
        !           659:        while (nregs--) {                                       \
        !           660:            fprintf(FILE, "\tmov.w ");                          \
        !           661:            MY_PRINT_ONEREG_H(FILE, mask);                      \
        !           662:            fprintf(FILE, ",@-sp\n");                           \
        !           663:        }                                                       \
        !           664:     }                                                          \
        !           665:   } else {                                                     \
        !           666:     if (fsize > 0)                                             \
        !           667:        myoutput_sp_adjust(FILE, "sub", fsize);                 \
        !           668:     if (mask != 0) {                                           \
        !           669:        if (nregs > 4) {                                        \
        !           670:            fprintf(FILE, "\tstm.w ");                          \
        !           671:            MY_PRINT_MASK(FILE, mask, MY_GREG_OFF);             \
        !           672:            fprintf(FILE, ",@-sp\n");                           \
        !           673:        } else {                                                \
        !           674:            while (nregs--) {                                   \
        !           675:                fprintf(FILE, "\tmov.w ");                      \
        !           676:                MY_PRINT_ONEREG_H(FILE, mask);                  \
        !           677:                fprintf(FILE, ",@-sp\n");                       \
        !           678:            }                                                   \
        !           679:        }                                                       \
        !           680:     }                                                          \
        !           681:   }                                                            \
        !           682:   mask = 0;                                                    \
        !           683:   for (regno = 16; regno < 32; regno++)                                \
        !           684:         if (regs_ever_live[regno] && !call_used_regs[regno])   \
        !           685:             mask |= 1 << (regno - 16);                         \
        !           686:   if (mask != 0) {                                             \
        !           687:        fprintf(FILE, "\tfstm.w ");                             \
        !           688:        MY_PRINT_MASK(FILE, mask, MY_FREG_OFF);                 \
        !           689:        fprintf(FILE, ",@-sp\n", mask);                         \
        !           690:   }                                                            \
        !           691: }
        !           692: 
        !           693: 
        !           694: /* Output assembler code to FILE to increment profiler label # LABELNO
        !           695:    for profiling a function entry.  */
        !           696: /* ??? M.Yuhara */
        !           697: 
        !           698: #define FUNCTION_PROFILER(FILE, LABELNO)  \
        !           699:   fprintf (FILE, "\tmova @LP%d,r0\n\tjsr mcount\n", (LABELNO))
        !           700: 
        !           701: /* Output assembler code to FILE to initialize this source file's
        !           702:    basic block profiling info, if that has not already been done.  */
        !           703: 
        !           704: #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO)  \
        !           705:   fprintf (FILE, "\tcmp #0,@LPBX0\n\tbne LPI%d\n\tpusha @LPBX0\n\tjsr ___bb_init_func\n\tadd #4,sp\nLPI%d:\n",  \
        !           706:           LABELNO, LABELNO);
        !           707: 
        !           708: /* Output assembler code to FILE to increment the entry-count for
        !           709:    the BLOCKNO'th basic block in this source file.  */
        !           710: 
        !           711: #define BLOCK_PROFILER(FILE, BLOCKNO)  \
        !           712:   fprintf (FILE, "\tadd #1,@(LPBX2+%d)\n", 4 * BLOCKNO)
        !           713: 
        !           714: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
        !           715:    the stack pointer does not matter.  The value is tested only in
        !           716:    functions that have frame pointers.
        !           717:    No definition is equivalent to always zero.  */
        !           718: 
        !           719: #define EXIT_IGNORE_STACK 1
        !           720: 
        !           721: /* This macro generates the assembly code for function exit,
        !           722:    on machines that need it.  If FUNCTION_EPILOGUE is not defined
        !           723:    then individual return instructions are generated for each
        !           724:    return statement.  Args are same as for FUNCTION_PROLOGUE.
        !           725: 
        !           726:    The function epilogue should not depend on the current stack pointer (when
        !           727:    frame_pinter_needed)  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
        !           728:    It should use the frame pointer only.  This is mandatory because
        !           729:    of alloca; we also take advantage of it to omit stack adjustments
        !           730:    before returning.  */
        !           731: 
        !           732: /* The Gmicro FPU seems to be unable to fldm/fstm double or single
        !           733:    floating. It only allows extended !! */
        !           734: /* Optimization is not enough, especially FREGs load !! M.Yuhara */
        !           735: 
        !           736: #define FUNCTION_EPILOGUE(FILE, SIZE) \
        !           737: { register int regno;                                          \
        !           738:   register int mask, fmask;                                    \
        !           739:   register int nregs, nfregs;                                  \
        !           740:   int offset, foffset;                                         \
        !           741:   extern char call_used_regs[];                                        \
        !           742:   static char *reg_names[] = REGISTER_NAMES;                   \
        !           743:   int fsize = ((SIZE) + 3) & -4;                               \
        !           744:   FUNCTION_EXTRA_EPILOGUE (FILE, SIZE);                                \
        !           745:   nfregs = 0;  fmask = 0;                                      \
        !           746:   for (regno = 16; regno < 31; regno++)                                \
        !           747:     if (regs_ever_live[regno] && ! call_used_regs[regno])      \
        !           748:       { nfregs++; fmask |= 1 << (regno - 16); }                        \
        !           749:   foffset = nfregs * 12;                                       \
        !           750:   nregs = 0;  mask = 0;                                                \
        !           751:   if (frame_pointer_needed) regs_ever_live[FRAME_POINTER_REGNUM] = 0; \
        !           752:   for (regno = 0; regno < 16; regno++)                         \
        !           753:     if (regs_ever_live[regno] && ! call_used_regs[regno])      \
        !           754:       { nregs++; mask |= 1 << regno; }                         \
        !           755:   if (frame_pointer_needed) {                                  \
        !           756:     offset = nregs * 4 + fsize;                                        \
        !           757:     if (nfregs > 0) {                                          \
        !           758:        fprintf(FILE, "\tfldm.x @(%d,fp),", -(foffset + offset));\
        !           759:        MY_PRINT_MASK(FILE, fmask, MY_FREG_OFF);                \
        !           760:        fprintf(FILE, "\n");                                    \
        !           761:     }                                                          \
        !           762:     if (nregs > 4                                              \
        !           763:        || current_function_pops_args) {                        \
        !           764:        fprintf(FILE, "\tmova @(%d,fp),sp\n", -offset);         \
        !           765:        fprintf(FILE, "\texitd ");                              \
        !           766:        MY_PRINT_MASK(FILE, mask, MY_GREG_OFF);                 \
        !           767:        fprintf(FILE, ",#%d\n", current_function_pops_args);    \
        !           768:     } else {                                                   \
        !           769:        while (nregs--) {                                       \
        !           770:            fprintf(FILE, "\tmov:l.w @(%d,fp),", -offset);      \
        !           771:            MY_PRINT_ONEREG_L(FILE, mask);                      \
        !           772:            fprintf(FILE, "\n");                                \
        !           773:            offset -= 4;                                        \
        !           774:        }                                                       \
        !           775:        if (TARGET_NEWRETURN) {                                 \
        !           776:            fprintf(FILE, "\tmova.w @(4,fp),sp\n");             \
        !           777:            fprintf(FILE, "\tmov:l.w @fp,fp\n");                \
        !           778:        } else {                                                \
        !           779:            fprintf(FILE, "\tmov.w fp,sp\n");                   \
        !           780:            fprintf(FILE, "\tmov.w @sp+,fp\n");                 \
        !           781:        }                                                       \
        !           782:        fprintf(FILE, "\trts\n");                               \
        !           783:     }                                                          \
        !           784:   } else {                                                     \
        !           785:     if (nfregs > 0) {                                          \
        !           786:        fprintf(FILE, "\tfldm.w @sp+,");                        \
        !           787:        MY_PRINT_MASK(FILE, fmask, MY_FREG_OFF);                \
        !           788:        fprintf(FILE, "\n");                                    \
        !           789:     }                                                          \
        !           790:     if (nregs > 4) {                                           \
        !           791:        fprintf(FILE, "\tldm.w @sp+,");                         \
        !           792:        MY_PRINT_MASK(FILE, mask, MY_GREG_OFF);                 \
        !           793:        fprintf(FILE, "\n");                                    \
        !           794:     } else {                                                   \
        !           795:        while (nregs--) {                                       \
        !           796:            fprintf(FILE, "\tmov.w @sp+,");                     \
        !           797:            MY_PRINT_ONEREG_L(FILE,mask);                       \
        !           798:            fprintf(FILE, "\n");                                \
        !           799:        }                                                       \
        !           800:     }                                                          \
        !           801:       if (current_function_pops_args) {                                \
        !           802:        myoutput_sp_adjust(FILE, "add",                         \
        !           803:            (fsize + 4 + current_function_pops_args));          \
        !           804:        fprintf(FILE, "\tjmp @(%d,sp)\n", current_function_pops_args);\
        !           805:     } else {                                                   \
        !           806:        if (fsize > 0)                                          \
        !           807:            myoutput_sp_adjust(FILE, "add", fsize);             \
        !           808:        fprintf(FILE, "\trts\n");                               \
        !           809:     }                                                          \
        !           810:   }                                                            \
        !           811: }
        !           812: 
        !           813: /* This is a hook for other tm files to change.  */
        !           814: #define FUNCTION_EXTRA_EPILOGUE(FILE, SIZE)
        !           815: 
        !           816: /* If the memory address ADDR is relative to the frame pointer,
        !           817:    correct it to be relative to the stack pointer instead.
        !           818:    This is for when we don't use a frame pointer.
        !           819:    ADDR should be a variable name.  */
        !           820: 
        !           821: /* You have to change the next macro if you want to use more complex
        !           822:    addressing modes (such as double indirection and  more than one
        !           823:    chain-addressing stages). */
        !           824: 
        !           825: #define FIX_FRAME_POINTER_ADDRESS(ADDR,DEPTH)  \
        !           826: { int offset = -1;                                                     \
        !           827:   rtx regs = stack_pointer_rtx;                                                \
        !           828:   if (ADDR == frame_pointer_rtx)                                       \
        !           829:     offset = 0;                                                                \
        !           830:   else if (GET_CODE (ADDR) == PLUS && XEXP (ADDR, 0) == frame_pointer_rtx \
        !           831:           && GET_CODE (XEXP (ADDR, 1)) == CONST_INT)                   \
        !           832:     offset = INTVAL (XEXP (ADDR, 1));                                  \
        !           833:   else if (GET_CODE (ADDR) == PLUS && XEXP (ADDR, 0) == frame_pointer_rtx) \
        !           834:     { rtx other_reg = XEXP (ADDR, 1);                                  \
        !           835:       offset = 0;                                                      \
        !           836:       regs = gen_rtx (PLUS, Pmode, stack_pointer_rtx, other_reg); }    \
        !           837:   else if (GET_CODE (ADDR) == PLUS && XEXP (ADDR, 1) == frame_pointer_rtx) \
        !           838:     { rtx other_reg = XEXP (ADDR, 0);                                  \
        !           839:       offset = 0;                                                      \
        !           840:       regs = gen_rtx (PLUS, Pmode, stack_pointer_rtx, other_reg); }    \
        !           841:   else if (GET_CODE (ADDR) == PLUS                                     \
        !           842:           && GET_CODE (XEXP (ADDR, 0)) == PLUS                         \
        !           843:           && XEXP (XEXP (ADDR, 0), 0) == frame_pointer_rtx             \
        !           844:           && GET_CODE (XEXP (ADDR, 1)) == CONST_INT)                   \
        !           845:     { rtx other_reg = XEXP (XEXP (ADDR, 0), 1);                                \
        !           846:       offset = INTVAL (XEXP (ADDR, 1));                                        \
        !           847:       regs = gen_rtx (PLUS, Pmode, stack_pointer_rtx, other_reg); }    \
        !           848:   else if (GET_CODE (ADDR) == PLUS                                     \
        !           849:           && GET_CODE (XEXP (ADDR, 0)) == PLUS                         \
        !           850:           && XEXP (XEXP (ADDR, 0), 1) == frame_pointer_rtx             \
        !           851:           && GET_CODE (XEXP (ADDR, 1)) == CONST_INT)                   \
        !           852:     { rtx other_reg = XEXP (XEXP (ADDR, 0), 0);                                \
        !           853:       offset = INTVAL (XEXP (ADDR, 1));                                        \
        !           854:       regs = gen_rtx (PLUS, Pmode, stack_pointer_rtx, other_reg); }    \
        !           855:   if (offset >= 0)                                                     \
        !           856:     { int regno;                                                       \
        !           857:       extern char call_used_regs[];                                    \
        !           858:       for (regno = 16; regno < 32; regno++)                            \
        !           859:         if (regs_ever_live[regno] && ! call_used_regs[regno])          \
        !           860:           offset += 12;                                                        \
        !           861:       for (regno = 0; regno < 16; regno++)                             \
        !           862:        if (regs_ever_live[regno] && ! call_used_regs[regno])           \
        !           863:          offset += 4;                                                  \
        !           864:       offset -= 4;                                                     \
        !           865:       ADDR = plus_constant (regs, offset + (DEPTH)); } }
        !           866: 
        !           867: /* Addressing modes, and classification of registers for them.  */
        !           868: 
        !           869: /* #define HAVE_POST_INCREMENT */
        !           870: /* #define HAVE_POST_DECREMENT */
        !           871: 
        !           872: /* #define HAVE_PRE_DECREMENT */
        !           873: /* #define HAVE_PRE_INCREMENT */
        !           874: 
        !           875: /* Macros to check register numbers against specific register classes.  */
        !           876: 
        !           877: /* These assume that REGNO is a hard or pseudo reg number.
        !           878:    They give nonzero only if REGNO is a hard reg of the suitable class
        !           879:    or a pseudo reg currently allocated to a suitable hard reg.
        !           880:    Since they use reg_renumber, they are safe only once reg_renumber
        !           881:    has been allocated, which happens in local-alloc.c.  */
        !           882: 
        !           883: /* Gmicro */
        !           884: #define REGNO_OK_FOR_GREG_P(REGNO) \
        !           885: ((REGNO) < 16 || (unsigned) reg_renumber[REGNO] < 16)
        !           886: #define REGNO_OK_FOR_FPU_P(REGNO) \
        !           887: (((REGNO) ^ 0x10) < 16 || (unsigned) (reg_renumber[REGNO] ^ 0x10) < 16)
        !           888: 
        !           889: #define REGNO_OK_FOR_INDEX_P(REGNO) REGNO_OK_FOR_GREG_P(REGNO)
        !           890: #define REGNO_OK_FOR_BASE_P(REGNO) REGNO_OK_FOR_GREG_P(REGNO)
        !           891: 
        !           892: /* Now macros that check whether X is a register and also,
        !           893:    strictly, whether it is in a specified class.
        !           894: 
        !           895:    These macros are specific to the Gmicro, and may be used only
        !           896:    in code for printing assembler insns and in conditions for
        !           897:    define_optimization.  */
        !           898: 
        !           899: /* 1 if X is an fpu register.  */
        !           900: 
        !           901: #define FPU_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FPU_P (REGNO (X)))
        !           902: 
        !           903: /* I used GREG_P in the gmicro.md file. */
        !           904: 
        !           905: #ifdef REG_OK_STRICT
        !           906: #define GREG_P(X) (REG_P (X) && REGNO_OK_FOR_GREG_P (REGNO(X)))
        !           907: #else
        !           908: #define GREG_P(X) (REG_P (X) && ((REGNO (X) & ~0xf) != 0x10))
        !           909: #endif
        !           910: 
        !           911: /* Maximum number of registers that can appear in a valid memory address.  */
        !           912: 
        !           913: /* The Gmicro allows more registers in the chained addressing mode.
        !           914:    But I do not know gcc supports such an architecture. */
        !           915: 
        !           916: #define MAX_REGS_PER_ADDRESS 2
        !           917: 
        !           918: /* Recognize any constant value that is a valid address.  */
        !           919: 
        !           920: #define CONSTANT_ADDRESS_P(X)  CONSTANT_P (X)
        !           921: 
        !           922: /* Nonzero if the constant value X is a legitimate general operand.
        !           923:    It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE.  */
        !           924: 
        !           925: #define LEGITIMATE_CONSTANT_P(X) 1
        !           926: 
        !           927: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
        !           928:    and check its validity for a certain class.
        !           929:    We have two alternate definitions for each of them.
        !           930:    The usual definition accepts all pseudo regs; the other rejects
        !           931:    them unless they have been allocated suitable hard regs.
        !           932:    The symbol REG_OK_STRICT causes the latter definition to be used.
        !           933: 
        !           934:    Most source files want to accept pseudo regs in the hope that
        !           935:    they will get allocated to the class that the insn wants them to be in.
        !           936:    Source files for reload pass need to be strict.
        !           937:    After reload, it makes no difference, since pseudo regs have
        !           938:    been eliminated by then.  */
        !           939: 
        !           940: #ifndef REG_OK_STRICT
        !           941: 
        !           942: /* Nonzero if X is a hard reg that can be used as an index
        !           943:    or if it is a pseudo reg.  */
        !           944: #define REG_OK_FOR_INDEX_P(X) ((REGNO (X) & ~0xf) != 0x10)
        !           945: /* Nonzero if X is a hard reg that can be used as a base reg
        !           946:    or if it is a pseudo reg.  */
        !           947: #define REG_OK_FOR_BASE_P(X) ((REGNO (X) & ~0xf) != 0x10)
        !           948: 
        !           949: #else
        !           950: 
        !           951: /* Nonzero if X is a hard reg that can be used as an index.  */
        !           952: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
        !           953: /* Nonzero if X is a hard reg that can be used as a base reg.  */
        !           954: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
        !           955: 
        !           956: #endif
        !           957: 
        !           958: /* The gcc uses the following effective address of the Gmicro.
        !           959:                                               (without using PC!!).
        !           960:    {@} ( {Rbase} + {Disp} + {Rindex * [1,2,4,8]} )
        !           961:        where
        !           962:                @:     memory indirection.
        !           963:                Rbase: Base Register = General Register.
        !           964:                Disp:  Displacement (up to 32bits)
        !           965:                Rindex: Index Register = General Register.
        !           966:                [1,2,4,8]: Scale of Index. 1 or 2 or 4 or 8.
        !           967:                The inside of { } can be omitted.
        !           968:     This restricts the chained addressing up to 1 stage.  */
        !           969: 
        !           970: 
        !           971: 
        !           972: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
        !           973:    that is a valid memory address for an instruction.
        !           974:    The MODE argument is the machine mode for the MEM expression
        !           975:    that wants to use this address.
        !           976: 
        !           977:    The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS,
        !           978:    except for CONSTANT_ADDRESS_P which is actually machine-independent.  */
        !           979: 
        !           980: #define REG_CODE_BASE_P(X) \
        !           981:   (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X))
        !           982: 
        !           983: #define REG_CODE_INDEX_P(X) \
        !           984:   (GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X))
        !           985: 
        !           986: /* GET_CODE(X) must be PLUS. This macro does not check for PLUS! */
        !           987: #define BASE_PLUS_DISP_P(X) \
        !           988:    ( REG_CODE_BASE_P (XEXP (X, 0))             \
        !           989:      && CONSTANT_ADDRESS_P (XEXP (X, 1))       \
        !           990:     ||                                         \
        !           991:      REG_CODE_BASE_P (XEXP (X, 1))             \
        !           992:      && CONSTANT_ADDRESS_P (XEXP (X, 0)) )
        !           993: 
        !           994: /* 1 if X is {0,Rbase} + {0,disp}.  */
        !           995: #define BASED_ADDRESS_P(X)  \
        !           996:   (CONSTANT_ADDRESS_P (X)      \
        !           997:    || REG_CODE_BASE_P (X)      \
        !           998:    || (GET_CODE (X) == PLUS)   \
        !           999:        && BASE_PLUS_DISP_P (X))
        !          1000: 
        !          1001: /* 1 if X is 1 or 2 or 4 or 8. GET_CODE(X) must be CONST_INT. */
        !          1002: #define SCALE_OF_INDEX_P(X) \
        !          1003:   ( INTVAL(X) == 4     \
        !          1004:     || INTVAL(X) == 2  \
        !          1005:     || INTVAL(X) == 8  \
        !          1006:     || INTVAL(X) == 1 )
        !          1007: 
        !          1008: /* #define INDEX_TERM_P(X,MODE)  */
        !          1009: #define INDEX_TERM_P(X)  \
        !          1010:   ( REG_CODE_INDEX_P(X)                                        \
        !          1011:     || (GET_CODE (X) == MULT                           \
        !          1012:        && ( (xfoo0 = XEXP (X, 0)), (xfoo1 = XEXP(X, 1)), \
        !          1013:             ( ( (GET_CODE (xfoo0) == CONST_INT)        \
        !          1014:               && SCALE_OF_INDEX_P (xfoo0)              \
        !          1015:               && REG_CODE_INDEX_P (xfoo1) )            \
        !          1016:              ||                                        \
        !          1017:               ( (GET_CODE (xfoo1) == CONST_INT)                \
        !          1018:               && SCALE_OF_INDEX_P (xfoo1)              \
        !          1019:               && REG_CODE_INDEX_P (xfoo0) ) ))))
        !          1020: 
        !          1021: /* Assumes there are no cases such that X = (Ireg + Disp) + Disp */
        !          1022: #define BASE_DISP_INDEX_P(X)  \
        !          1023:   ( BASED_ADDRESS_P (X)                                                        \
        !          1024:    || ( (GET_CODE (X) == PLUS)                                         \
        !          1025:       && ( ( (xboo0 = XEXP (X, 0)), (xboo1 = XEXP (X, 1)),             \
        !          1026:          (REG_CODE_BASE_P (xboo0)                                      \
        !          1027:            && (GET_CODE (xboo1) == PLUS)                               \
        !          1028:            && ( ( CONSTANT_ADDRESS_P (XEXP (xboo1, 0))                 \
        !          1029:                   && INDEX_TERM_P (XEXP (xboo1, 1)) )                  \
        !          1030:                 || ( CONSTANT_ADDRESS_P (XEXP (xboo1, 1))              \
        !          1031:                     && INDEX_TERM_P (XEXP (xboo1, 0))) )))             \
        !          1032:         ||                                                             \
        !          1033:          (CONSTANT_ADDRESS_P (xboo0)                                   \
        !          1034:            && (GET_CODE (xboo1) == PLUS)                               \
        !          1035:            && ( ( REG_CODE_BASE_P (XEXP (xboo1, 0))                    \
        !          1036:                   && INDEX_TERM_P (XEXP (xboo1, 1)) )                  \
        !          1037:                 || ( REG_CODE_BASE_P (XEXP (xboo1, 1))                 \
        !          1038:                      && INDEX_TERM_P (XEXP (xboo1, 0))) ))             \
        !          1039:        ||                                                              \
        !          1040:          (INDEX_TERM_P (xboo0)                                         \
        !          1041:            && ( ( (GET_CODE (xboo1) == PLUS)                           \
        !          1042:                  && ( ( REG_CODE_BASE_P (XEXP (xboo1, 0))              \
        !          1043:                      && CONSTANT_ADDRESS_P (XEXP (xboo1, 1)) )         \
        !          1044:                       || ( REG_CODE_BASE_P (XEXP (xboo1, 1))           \
        !          1045:                      && CONSTANT_ADDRESS_P (XEXP (xboo1, 0))) ))       \
        !          1046:                ||                                                      \
        !          1047:                 (CONSTANT_ADDRESS_P (xboo1))                           \
        !          1048:                ||                                                      \
        !          1049:                 (REG_CODE_BASE_P (xboo1)) )))))
        !          1050: 
        !          1051: /*
        !          1052:        If you want to allow double-indirection,
        !          1053:        you have to change the <fp-relative> => <sp-relative> conversion
        !          1054:        routine. M.Yuhara
        !          1055: 
        !          1056: #ifdef REG_OK_STRICT
        !          1057: #define DOUBLE_INDIRECTION(X,ADDR) {\
        !          1058:     if (BASE_DISP_INDEX_P (XEXP (XEXP (X, 0), 0) )) goto ADDR; \
        !          1059:     }
        !          1060: #else
        !          1061: #define DOUBLE_INDIRECTION(X,ADDR) { }
        !          1062: #endif
        !          1063: */
        !          1064: 
        !          1065: 
        !          1066: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR) {\
        !          1067:   register rtx xboo0, xboo1, xfoo0, xfoo1;             \
        !          1068:   if (GET_CODE (X) == MEM) {                           \
        !          1069:     /*                                                 \
        !          1070:     if (GET_CODE (XEXP (X,0)) == MEM) {                        \
        !          1071:        DOUBLE_INDIRECTION(X,ADDR);                     \
        !          1072:     } else {                                           \
        !          1073:        if (BASE_DISP_INDEX_P (XEXP (X, 0))) goto ADDR; \
        !          1074:     }                                                  \
        !          1075:     */                                                 \
        !          1076:   } else {                                             \
        !          1077:        if (BASE_DISP_INDEX_P (X)) goto ADDR;           \
        !          1078:        if ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_INC)       \
        !          1079:            && REG_P (XEXP (X, 0))                                      \
        !          1080:            && (REGNO (XEXP (X, 0)) == STACK_POINTER_REGNUM))           \
        !          1081:                goto ADDR;                                              \
        !          1082:   }                                                    \
        !          1083: }
        !          1084: 
        !          1085: 
        !          1086: /* Try machine-dependent ways of modifying an illegitimate address
        !          1087:    to be legitimate.  If we find one, return the new, valid address.
        !          1088:    This macro is used in only one place: `memory_address' in explow.c.
        !          1089: 
        !          1090:    OLDX is the address as it was before break_out_memory_refs was called.
        !          1091:    In some cases it is useful to look at this to decide what needs to be done.
        !          1092: 
        !          1093:    MODE and WIN are passed so that this macro can use
        !          1094:    GO_IF_LEGITIMATE_ADDRESS.
        !          1095: 
        !          1096:    It is always safe for this macro to do nothing.  It exists to recognize
        !          1097:    opportunities to optimize the output.
        !          1098: 
        !          1099:    For the Gmicro, nothing is done now. */
        !          1100: 
        !          1101: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN) {}
        !          1102: 
        !          1103: /* Go to LABEL if ADDR (a legitimate address expression)
        !          1104:    has an effect that depends on the machine mode it is used for.
        !          1105:    On the VAX, the predecrement and postincrement address depend thus
        !          1106:    (the amount of decrement or increment being the length of the operand)
        !          1107:    and all indexed address depend thus (because the index scale factor
        !          1108:    is the length of the operand).
        !          1109:    The Gmicro mimics the VAX now. Since ADDE is legitimate, it cannot
        !          1110:    include auto-inc/dec. */
        !          1111: 
        !          1112: /* Unnecessary ??? */
        !          1113: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)       \
        !          1114:  { if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC)      \
        !          1115:      goto LABEL; }
        !          1116: 
        !          1117: 
        !          1118: /* Specify the machine mode that this machine uses
        !          1119:    for the index in the tablejump instruction.  */
        !          1120: /* #define CASE_VECTOR_MODE HImode */
        !          1121: #define CASE_VECTOR_MODE SImode
        !          1122: 
        !          1123: /* Define this if the tablejump instruction expects the table
        !          1124:    to contain offsets from the address of the table.
        !          1125:    Do not define this if the table should contain absolute addresses.  */
        !          1126: #define CASE_VECTOR_PC_RELATIVE
        !          1127: 
        !          1128: /* Specify the tree operation to be used to convert reals to integers.  */
        !          1129: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
        !          1130: 
        !          1131: /* This is the kind of divide that is easiest to do in the general case.  */
        !          1132: #define EASY_DIV_EXPR TRUNC_DIV_EXPR
        !          1133: 
        !          1134: /* Define this as 1 if `char' should by default be signed; else as 0.  */
        !          1135: #define DEFAULT_SIGNED_CHAR 1
        !          1136: 
        !          1137: /* Max number of bytes we can move from memory to memory
        !          1138:    in one reasonably fast instruction.  */
        !          1139: #define MOVE_MAX 4
        !          1140: 
        !          1141: /* Define this if zero-extension is slow (more than one real instruction).  */
        !          1142: /* #define SLOW_ZERO_EXTEND */
        !          1143: 
        !          1144: /* Nonzero if access to memory by bytes is slow and undesirable.  */
        !          1145: #define SLOW_BYTE_ACCESS 0
        !          1146: 
        !          1147: /* Define if shifts truncate the shift count
        !          1148:    which implies one can omit a sign-extension or zero-extension
        !          1149:    of a shift count.  */
        !          1150: /* #define SHIFT_COUNT_TRUNCATED */
        !          1151: 
        !          1152: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
        !          1153:    is done just by pretending it is already truncated.  */
        !          1154: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
        !          1155: 
        !          1156: /* We assume that the store-condition-codes instructions store 0 for false
        !          1157:    and some other value for true.  This is the value stored for true.  */
        !          1158: 
        !          1159: /* #define STORE_FLAG_VALUE -1 */
        !          1160: 
        !          1161: /* When a prototype says `char' or `short', really pass an `int'.  */
        !          1162: #define PROMOTE_PROTOTYPES
        !          1163: 
        !          1164: /* Specify the machine mode that pointers have.
        !          1165:    After generation of rtl, the compiler makes no further distinction
        !          1166:    between pointers and any other objects of this machine mode.  */
        !          1167: #define Pmode SImode
        !          1168: 
        !          1169: /* A function address in a call instruction
        !          1170:    is a byte address (for indexing purposes)
        !          1171:    so give the MEM rtx a byte's mode.  */
        !          1172: #define FUNCTION_MODE QImode
        !          1173: 
        !          1174: /* Compute the cost of computing a constant rtl expression RTX
        !          1175:    whose rtx-code is CODE.  The body of this macro is a portion
        !          1176:    of a switch statement.  If the code is computed here,
        !          1177:    return it with a return statement.  Otherwise, break from the switch.  */
        !          1178: 
        !          1179: #define CONST_COSTS(RTX,CODE) \
        !          1180:   case CONST_INT:                                              \
        !          1181:     if ((unsigned) INTVAL (RTX) < 8) return 0;                 \
        !          1182:     if ((unsigned) (INTVAL (RTX) + 0x80) < 0x100) return 1;    \
        !          1183:     if ((unsigned) (INTVAL (RTX) + 0x8000) < 0x10000) return 2;        \
        !          1184:   case CONST:                                                  \
        !          1185:   case LABEL_REF:                                              \
        !          1186:   case SYMBOL_REF:                                             \
        !          1187:     return 3;                                                  \
        !          1188:   case CONST_DOUBLE:                                           \
        !          1189:     return 5;
        !          1190: 
        !          1191: /* Define subroutines to call to handle multiply and divide.
        !          1192:    The `*' prevents an underscore from being prepended by the compiler.  */
        !          1193: /* Use libgcc on Gmicro */
        !          1194: /* #define UDIVSI3_LIBCALL "*udiv" */
        !          1195: /* #define UMODSI3_LIBCALL "*urem" */
        !          1196: 
        !          1197: 
        !          1198: /* Tell final.c how to eliminate redundant test instructions.  */
        !          1199: 
        !          1200: /* Here we define machine-dependent flags and fields in cc_status
        !          1201:    (see `conditions.h').  */
        !          1202: 
        !          1203: /* Set if the cc value is actually in the FPU, so a floating point
        !          1204:    conditional branch must be output.  */
        !          1205: #define CC_IN_FPU 04000
        !          1206: 
        !          1207: /* Store in cc_status the expressions
        !          1208:    that the condition codes will describe
        !          1209:    after execution of an instruction whose pattern is EXP.
        !          1210:    Do not alter them if the instruction would not alter the cc's.  */
        !          1211: 
        !          1212: /* Since Gmicro's compare instructions depend on the branch condition,
        !          1213:    all branch should be kept.
        !          1214:    More work must be done to optimize condition code !! M.Yuhara */
        !          1215: 
        !          1216: #define NOTICE_UPDATE_CC(EXP, INSN) {CC_STATUS_INIT;}
        !          1217: 
        !          1218: /* The skelton of the next macro is taken from "vax.h".
        !          1219:    FPU-reg manipulation is added.  M.Yuhara */
        !          1220: /* Now comment out.
        !          1221: #define NOTICE_UPDATE_CC(EXP, INSN) {  \
        !          1222:   if (GET_CODE (EXP) == SET) {                                 \
        !          1223:       if ( !FPU_REG_P (XEXP (EXP, 0))                          \
        !          1224:          && (XEXP (EXP, 0) != cc0_rtx)                         \
        !          1225:          && (FPU_REG_P (XEXP (EXP, 1))                         \
        !          1226:              || GET_CODE (XEXP (EXP, 1)) == FIX                \
        !          1227:              || GET_CODE (XEXP (EXP, 1)) == FLOAT_TRUNCATE     \
        !          1228:              || GET_CODE (XEXP (EXP, 1)) == FLOAT_EXTEND)) {   \
        !          1229:         CC_STATUS_INIT;                                        \
        !          1230:       } else if (GET_CODE (SET_SRC (EXP)) == CALL) {           \
        !          1231:         CC_STATUS_INIT;                                        \
        !          1232:       } else if (GET_CODE (SET_DEST (EXP)) != PC) {            \
        !          1233:          cc_status.flags = 0;                                  \
        !          1234:          cc_status.value1 = SET_DEST (EXP);                    \
        !          1235:          cc_status.value2 = SET_SRC (EXP);                     \
        !          1236:       }                                                                \
        !          1237:   } else if (GET_CODE (EXP) == PARALLEL                                \
        !          1238:           && GET_CODE (XVECEXP (EXP, 0, 0)) == SET             \
        !          1239:           && GET_CODE (SET_DEST (XVECEXP (EXP, 0, 0))) != PC) {\
        !          1240:       cc_status.flags = 0;                                     \
        !          1241:       cc_status.value1 = SET_DEST (XVECEXP (EXP, 0, 0));       \
        !          1242:       cc_status.value2 = SET_SRC (XVECEXP (EXP, 0, 0));        \
        !          1243:   /* PARALLELs whose first element sets the PC are aob, sob VAX insns. \
        !          1244:      They do change the cc's.  So drop through and forget the cc's. * / \
        !          1245:   } else CC_STATUS_INIT;                                               \
        !          1246:   if (cc_status.value1 && GET_CODE (cc_status.value1) == REG   \
        !          1247:       && cc_status.value2                                      \
        !          1248:       && reg_overlap_mentioned_p (cc_status.value1, cc_status.value2)) \
        !          1249:     cc_status.value2 = 0;                                      \
        !          1250:   if (cc_status.value1 && GET_CODE (cc_status.value1) == MEM   \
        !          1251:       && cc_status.value2                                      \
        !          1252:       && GET_CODE (cc_status.value2) == MEM)                   \
        !          1253:     cc_status.value2 = 0;                                      \
        !          1254:   if ( (cc_status.value1 && FPU_REG_P (cc_status.value1))      \
        !          1255:       || (cc_status.value2 && FPU_REG_P (cc_status.value2)))   \
        !          1256:     cc_status.flags = CC_IN_FPU;                               \
        !          1257: }
        !          1258: */
        !          1259: 
        !          1260: #define OUTPUT_JUMP(NORMAL, FLOAT, NO_OV)  \
        !          1261: { if (cc_prev_status.flags & CC_IN_FPU)                \
        !          1262:     return FLOAT;                              \
        !          1263:   if (cc_prev_status.flags & CC_NO_OVERFLOW)   \
        !          1264:     return NO_OV;                              \
        !          1265:   return NORMAL; }
        !          1266: 
        !          1267: /* Control the assembler format that we output.  */
        !          1268: 
        !          1269: /* Output before read-only data.  */
        !          1270: 
        !          1271: #define TEXT_SECTION_ASM_OP "\t.section text,code,align=4"
        !          1272: 
        !          1273: /* Output before writable data.  */
        !          1274: 
        !          1275: #define DATA_SECTION_ASM_OP "\t.section data,data,align=4"
        !          1276: 
        !          1277: /* Output before uninitialized data. */
        !          1278: 
        !          1279: #define BSS_SECTION_ASM_OP "\t.section bss,data,align=4"
        !          1280: 
        !          1281: #define EXTRA_SECTIONS in_bss
        !          1282: 
        !          1283: #define EXTRA_SECTION_FUNCTIONS        \
        !          1284: void                                                           \
        !          1285: bss_section ()                                                 \
        !          1286: {                                                              \
        !          1287:     if (in_section != in_bss) {                                        \
        !          1288:        fprintf (asm_out_file, "%s\n", BSS_SECTION_ASM_OP);     \
        !          1289:        in_section = in_bss;                                    \
        !          1290:     }                                                          \
        !          1291: }
        !          1292: 
        !          1293: /* Output at beginning of assembler file.
        !          1294:    It is not appropriate for this to print a list of the options used,
        !          1295:    since that's not the convention that we use.  */
        !          1296: 
        !          1297: #define ASM_FILE_START(FILE)
        !          1298: 
        !          1299: /* Output at the end of assembler file. */
        !          1300: 
        !          1301: #define ASM_FILE_END(FILE)  fprintf (FILE, "\t.end\n");
        !          1302: 
        !          1303: 
        !          1304: /* Don't try to define `gcc_compiled.' since the assembler do not
        !          1305:    accept symbols with periods and GDB doesn't run on this machine anyway.  */
        !          1306: #define ASM_IDENTIFY_GCC(FILE)
        !          1307: 
        !          1308: 
        !          1309: /* Output to assembler file text saying following lines
        !          1310:    may contain character constants, extra white space, comments, etc.  */
        !          1311: 
        !          1312: #define ASM_APP_ON ""
        !          1313: /* #define ASM_APP_ON "#APP\n" */
        !          1314: 
        !          1315: /* Output to assembler file text saying following lines
        !          1316:    no longer contain unusual constructs.  */
        !          1317: 
        !          1318: #define ASM_APP_OFF ""
        !          1319: /* #define ASM_APP_OFF ";#NO_APP\n" */
        !          1320: 
        !          1321: /* How to refer to registers in assembler output.
        !          1322:    This sequence is indexed by compiler's hard-register-number (see above).  */
        !          1323: 
        !          1324: #define REGISTER_NAMES \
        !          1325: {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7",       \
        !          1326:  "r8", "r9", "r10", "r11", "r12", "r13", "fp", "sp",   \
        !          1327:  "fr0", "fr1", "fr2", "fr3", "fr4", "fr5", "fr6", "fr7", \
        !          1328:  "fr8", "fr9", "fr10", "fr11", "fr12", "fr13", "fr14", "fr15"}
        !          1329: 
        !          1330: /* How to renumber registers for dbx and gdb. */
        !          1331: 
        !          1332: #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
        !          1333: 
        !          1334: /* Define this if gcc should produce debugging output for dbx in response
        !          1335:    to the -g flag. This does not work for the Gmicro now */
        !          1336: 
        !          1337: #define DBX_DEBUGGING_INFO
        !          1338: 
        !          1339: /* This is how to output the definition of a user-level label named NAME,
        !          1340:    such as the label on a static function or variable NAME.  */
        !          1341: 
        !          1342: #define ASM_OUTPUT_LABEL(FILE,NAME) {  \
        !          1343:     assemble_name (FILE, NAME);        \
        !          1344:     fputs (":\n", FILE);       \
        !          1345: }
        !          1346: 
        !          1347: /* This is how to output a command to make the user-level label named NAME
        !          1348:    defined for reference from other files.  */
        !          1349: 
        !          1350: #define ASM_GLOBALIZE_LABEL(FILE,NAME) {\
        !          1351:     fputs ("\t.global ", FILE);        \
        !          1352:     assemble_name (FILE, NAME);        \
        !          1353:     fputs ("\n", FILE);                \
        !          1354: }
        !          1355: 
        !          1356: /* This is how to output a command to make the external label named NAME
        !          1357:    which are not defined in the file to be referable */
        !          1358: /* ".import" does not work ??? */
        !          1359: 
        !          1360: #define ASM_OUTPUT_EXTERNAL(FILE,DECL,NAME) { \
        !          1361:     fputs ("\t.global ", FILE);        \
        !          1362:     assemble_name (FILE, NAME);        \
        !          1363:     fputs ("\n", FILE);                \
        !          1364: }
        !          1365: 
        !          1366: 
        !          1367: /* This is how to output a reference to a user-level label named NAME.
        !          1368:    `assemble_name' uses this.  */
        !          1369: 
        !          1370: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
        !          1371:   fprintf (FILE, "_%s", NAME)
        !          1372: 
        !          1373: /* This is how to output an internal numbered label where
        !          1374:    PREFIX is the class of label and NUM is the number within the class.  */
        !          1375: 
        !          1376: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)     \
        !          1377:   fprintf (FILE, "%s%d:\n", PREFIX, NUM)
        !          1378: 
        !          1379: /* This is how to store into the string LABEL
        !          1380:    the symbol_ref name of an internal numbered label where
        !          1381:    PREFIX is the class of label and NUM is the number within the class.
        !          1382:    This is suitable for output with `assemble_name'.  */
        !          1383: 
        !          1384: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)  \
        !          1385:   sprintf (LABEL, "*%s%d", PREFIX, NUM)
        !          1386: 
        !          1387: /* This is how to output an assembler line defining a `double' constant.  */
        !          1388: 
        !          1389: /* do {...} while(0) is necessary, because these macros are used as
        !          1390:     if (xxx) MACRO; else ....
        !          1391:                  ^
        !          1392: */
        !          1393: 
        !          1394: 
        !          1395: #define ASM_OUTPUT_DOUBLE(FILE,VALUE)  \
        !          1396: do { union { double d; long l[2];} tem;                                        \
        !          1397:      tem.d = (VALUE);                                                  \
        !          1398:      fprintf (FILE, "\t.fdata.d h'%x%08x.d\n", tem.l[0], tem.l[1]);    \
        !          1399: } while(0)
        !          1400: 
        !          1401: 
        !          1402: /* This is how to output an assembler line defining a `float' constant.  */
        !          1403: 
        !          1404: #define ASM_OUTPUT_FLOAT(FILE,VALUE)  \
        !          1405: do { union { float f; long l;} tem;                    \
        !          1406:      tem.f = (VALUE);                                  \
        !          1407:      fprintf (FILE, "\t.fdata.s h'%x.s\n", tem.l);     \
        !          1408: } while(0)
        !          1409: 
        !          1410: /* This is how to output an assembler line defining an `int' constant.  */
        !          1411: 
        !          1412: #define ASM_OUTPUT_INT(FILE,VALUE)  \
        !          1413: ( fprintf (FILE, "\t.data.w "),                        \
        !          1414:   output_addr_const (FILE, (VALUE)),           \
        !          1415:   fprintf (FILE, "\n"))
        !          1416: 
        !          1417: /* Likewise for `char' and `short' constants.  */
        !          1418: 
        !          1419: #define ASM_OUTPUT_SHORT(FILE,VALUE)  \
        !          1420: ( fprintf (FILE, "\t.data.h "),                        \
        !          1421:   output_addr_const (FILE, (VALUE)),           \
        !          1422:   fprintf (FILE, "\n"))
        !          1423: 
        !          1424: #define ASM_OUTPUT_CHAR(FILE,VALUE)  \
        !          1425: ( fprintf (FILE, "\t.data.b "),                        \
        !          1426:   output_addr_const (FILE, (VALUE)),           \
        !          1427:   fprintf (FILE, "\n"))
        !          1428: 
        !          1429: /* This is how to output an assembler line for a numeric constant byte.  */
        !          1430: 
        !          1431: #define ASM_OUTPUT_BYTE(FILE,VALUE)  \
        !          1432:   fprintf (FILE, "\t.data.b h'%x\n", (VALUE))
        !          1433: 
        !          1434: #define ASM_OUTPUT_ASCII(FILE,P,SIZE)  \
        !          1435:   output_ascii ((FILE), (P), (SIZE))
        !          1436: 
        !          1437: /* This is how to output an insn to push a register on the stack.
        !          1438:    It need not be very fast code.  */
        !          1439: 
        !          1440: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO)  \
        !          1441:   fprintf (FILE, "\tmov %s,@-sp\n", reg_names[REGNO])
        !          1442: 
        !          1443: /* This is how to output an insn to pop a register from the stack.
        !          1444:    It need not be very fast code.  */
        !          1445: 
        !          1446: #define ASM_OUTPUT_REG_POP(FILE,REGNO)  \
        !          1447:   fprintf (FILE, "\tmov @sp+,%s\n", reg_names[REGNO])
        !          1448: 
        !          1449: /* This is how to output an element of a case-vector that is absolute.
        !          1450:    (The Gmicro does not use such vectors,
        !          1451:    but we must define this macro anyway.)  */
        !          1452: 
        !          1453: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
        !          1454:   fprintf (FILE, "\t.data.w L%d\n", VALUE)
        !          1455: 
        !          1456: 
        !          1457: /* This is how to output an element of a case-vector that is relative.  */
        !          1458: 
        !          1459: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)  \
        !          1460:   fprintf (FILE, "\t.data.w L%d-L%d\n", VALUE, REL)
        !          1461: 
        !          1462: 
        !          1463: /* This is how to output an assembler line
        !          1464:    that says to advance the location counter
        !          1465:    to a multiple of 2**LOG bytes.  */
        !          1466: 
        !          1467: #define ASM_OUTPUT_ALIGN(FILE,LOG)  \
        !          1468:   fprintf (FILE, "\t.align %d\n", (1 << (LOG)));
        !          1469: 
        !          1470: #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
        !          1471:   fprintf (FILE, "\t.res.b %d\n", (SIZE))
        !          1472: 
        !          1473: /* This says how to output an assembler line
        !          1474:    to define a global common symbol.  */
        !          1475: 
        !          1476: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)  \
        !          1477: ( bss_section (),                              \
        !          1478:   assemble_name ((FILE), (NAME)),              \
        !          1479:   fprintf ((FILE), ":\t.res.b %d\n", (ROUNDED)),\
        !          1480:   fprintf ((FILE), "\t.export "),              \
        !          1481:   assemble_name ((FILE), (NAME)),              \
        !          1482:   fprintf ((FILE), "\n") )
        !          1483: 
        !          1484: /* This says how to output an assembler line
        !          1485:    to define a local common symbol.  */
        !          1486: 
        !          1487: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
        !          1488: ( bss_section (),                              \
        !          1489:   assemble_name ((FILE), (NAME)),              \
        !          1490:   fprintf ((FILE), ":\t.res.b %d\n", (ROUNDED)))
        !          1491: 
        !          1492: /* Store in OUTPUT a string (made with alloca) containing
        !          1493:    an assembler-name for a local static variable named NAME.
        !          1494:    LABELNO is an integer which is different for each call.  */
        !          1495: 
        !          1496: /* $__ is unique ????? M.Yuhara */
        !          1497: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
        !          1498: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 12),   \
        !          1499:   sprintf ((OUTPUT), "$__%s%d", (NAME), (LABELNO)))
        !          1500: 
        !          1501: /* Define the parentheses used to group arithmetic operations
        !          1502:    in assembler code.  */
        !          1503: 
        !          1504: #define ASM_OPEN_PAREN "("
        !          1505: #define ASM_CLOSE_PAREN ")"
        !          1506: 
        !          1507: /* Define results of standard character escape sequences.  */
        !          1508: #define TARGET_BELL 007
        !          1509: #define TARGET_BS 010
        !          1510: #define TARGET_TAB 011
        !          1511: #define TARGET_NEWLINE 012
        !          1512: #define TARGET_VT 013
        !          1513: #define TARGET_FF 014
        !          1514: #define TARGET_CR 015
        !          1515: 
        !          1516: /* Output a float value (represented as a C double) as an immediate operand.
        !          1517:    This macro is a Gmicro/68k-specific macro.  */
        !          1518: 
        !          1519: #define ASM_OUTPUT_FLOAT_OPERAND(FILE,VALUE)   \
        !          1520: do { union { float f; long l;} tem;            \
        !          1521:   tem.f = (VALUE);                             \
        !          1522:   fprintf (FILE, "#h'%x.s", tem.l);            \
        !          1523: } while(0)
        !          1524: 
        !          1525: 
        !          1526: /* Output a double value (represented as a C double) as an immediate operand.
        !          1527:    This macro is a 68k-specific macro.  */
        !          1528: #define ASM_OUTPUT_DOUBLE_OPERAND(FILE,VALUE)  \
        !          1529: do { union { double d; long l[2];} tem;                \
        !          1530:   tem.d = (VALUE);                             \
        !          1531:   fprintf (FILE, "#h'%x%08x.d", tem.l[0], tem.l[1]);   \
        !          1532: } while(0)
        !          1533: 
        !          1534: /* Print operand X (an rtx) in assembler syntax to file FILE.
        !          1535:    CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
        !          1536:    For `%' followed by punctuation, CODE is the punctuation and X is null.
        !          1537: 
        !          1538:    On the Gmicro, we use several CODE characters:
        !          1539:    'f' for float insn (print a CONST_DOUBLE as a float rather than in hex)
        !          1540:    'b' for branch target label.
        !          1541:    '-' for an operand pushing on the stack.
        !          1542:    '+' for an operand pushing on the stack.
        !          1543:    '#' for an immediate operand prefix 
        !          1544: */
        !          1545: 
        !          1546: #define PRINT_OPERAND_PUNCT_VALID_P(CODE)      \
        !          1547:   ( (CODE) == '#' || (CODE) == '-'             \
        !          1548:      || (CODE) == '+' || (CODE) == '@' || (CODE) == '!')
        !          1549: 
        !          1550: 
        !          1551: #define PRINT_OPERAND(FILE, X, CODE)  \
        !          1552: { int i;                                                               \
        !          1553:   static char *reg_name[] = REGISTER_NAMES;                            \
        !          1554: /* fprintf (stderr, "PRINT_OPERAND CODE=%c(0x%x), ", CODE, CODE);\
        !          1555: myprcode(GET_CODE(X)); */      \
        !          1556:   if (CODE == '#') fprintf (FILE, "#");                                        \
        !          1557:   else if (CODE == '-') fprintf (FILE, "@-sp");                                \
        !          1558:   else if (CODE == '+') fprintf (FILE, "@sp+");                                \
        !          1559:   else if (CODE == 's') fprintf (stderr, "err: PRINT_OPERAND <s>\n");  \
        !          1560:   else if (CODE == '!') fprintf (stderr, "err: PRINT_OPERAND <!>\n");  \
        !          1561:   else if (CODE == '.') fprintf (stderr, "err: PRINT_OPERAND <.>\n");  \
        !          1562:   else if (CODE == 'b') {                                              \
        !          1563:     if (GET_CODE (X) == MEM)                                           \
        !          1564:        output_addr_const (FILE, XEXP (X, 0));  /* for bsr */           \
        !          1565:     else                                                               \
        !          1566:        output_addr_const (FILE, X);  /* for bcc */                     \
        !          1567:   }                                                                    \
        !          1568:   else if (CODE == 'p')                                                        \
        !          1569:     print_operand_address (FILE, X);                                   \
        !          1570:   else if (GET_CODE (X) == REG)                                                \
        !          1571:     fprintf (FILE, "%s", reg_name[REGNO (X)]);                         \
        !          1572:   else if (GET_CODE (X) == MEM)                                                \
        !          1573:     output_address (XEXP (X, 0));                                      \
        !          1574:   else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode)     \
        !          1575:     { union { double d; int i[2]; } u;                                 \
        !          1576:       union { float f; int i; } u1;                                    \
        !          1577:       u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X);   \
        !          1578:       u1.f = u.d;                                                      \
        !          1579:       if (CODE == 'f')                                                 \
        !          1580:        ASM_OUTPUT_FLOAT_OPERAND (FILE, u1.f);                          \
        !          1581:       else                                                             \
        !          1582:        fprintf (FILE, "#h'%x", u1.i); }                                \
        !          1583:   else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) != DImode)     \
        !          1584:     { union { double d; int i[2]; } u;                                 \
        !          1585:       u.i[0] = CONST_DOUBLE_LOW (X); u.i[1] = CONST_DOUBLE_HIGH (X);   \
        !          1586:       ASM_OUTPUT_DOUBLE_OPERAND (FILE, u.d); }                         \
        !          1587:   else { putc ('#', FILE);                                             \
        !          1588: output_addr_const (FILE, X); }}
        !          1589: 
        !          1590: /* Note that this contains a kludge that knows that the only reason
        !          1591:    we have an address (plus (label_ref...) (reg...))
        !          1592:    is in the insn before a tablejump, and we know that m68k.md
        !          1593:    generates a label LInnn: on such an insn.  */
        !          1594: #define PRINT_OPERAND_ADDRESS(FILE, ADDR) \
        !          1595:     { print_operand_address (FILE, ADDR); }
        !          1596: 
        !          1597: /*
        !          1598: Local variables:
        !          1599: version-control: t
        !          1600: End:
        !          1601: */

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