Return to tm-m68k.h CVS log

Up to [Research Unix] / researchv10dc / cmd / gcc

Annotation of researchv10dc/cmd/gcc/tm-m68k.h, revision 1.1

1.1     ! root        1: /* Definitions of target machine for GNU compiler.  Sun 68000/68020 version.
        !             2:    Copyright (C) 1987, 1988 Free Software Foundation, Inc.
        !             3: 
        !             4: This file is part of GNU CC.
        !             5: 
        !             6: GNU CC is distributed in the hope that it will be useful,
        !             7: but WITHOUT ANY WARRANTY.  No author or distributor
        !             8: accepts responsibility to anyone for the consequences of using it
        !             9: or for whether it serves any particular purpose or works at all,
        !            10: unless he says so in writing.  Refer to the GNU CC General Public
        !            11: License for full details.
        !            12: 
        !            13: Everyone is granted permission to copy, modify and redistribute
        !            14: GNU CC, but only under the conditions described in the
        !            15: GNU CC General Public License.   A copy of this license is
        !            16: supposed to have been given to you along with GNU CC so you
        !            17: can know your rights and responsibilities.  It should be in a
        !            18: file named COPYING.  Among other things, the copyright notice
        !            19: and this notice must be preserved on all copies.  */
        !            20: 
        !            21: 
        !            22: /* Note that some other tm- files include this one and then override
        !            23:    many of the definitions that relate to assembler syntax.  */
        !            24: 
        !            25: 
        !            26: /* Names to predefine in the preprocessor for this target machine.  */
        !            27: 
        !            28: /* See tm-sun3.h, tm-sun2.h, tm-isi68.h for different CPP_PREDEFINES.  */
        !            29: 
        !            30: /* Print subsidiary information on the compiler version in use.  */
        !            31: #ifdef MOTOROLA
        !            32: #define TARGET_VERSION printf (" (68k, Motorola syntax)");
        !            33: #else
        !            34: #define TARGET_VERSION printf (" (68k, MIT syntax)");
        !            35: #endif
        !            36: 
        !            37: /* Run-time compilation parameters selecting different hardware subsets.  */
        !            38: 
        !            39: extern int target_flags;
        !            40: 
        !            41: /* Macros used in the machine description to test the flags.  */
        !            42: 
        !            43: /* Compile for a 68020 (not a 68000 or 68010).  */
        !            44: #define TARGET_68020 (target_flags & 1)
        !            45: /* Compile 68881 insns for floating point (not library calls).  */
        !            46: #define TARGET_68881 (target_flags & 2)
        !            47: /* Compile using 68020 bitfield insns.  */
        !            48: #define TARGET_BITFIELD (target_flags & 4)
        !            49: /* Compile using rtd insn calling sequence.
        !            50:    This will not work unless you use prototypes at least
        !            51:    for all functions that can take varying numbers of args.  */
        !            52: #define TARGET_RTD (target_flags & 8)
        !            53: /* Compile passing first two args in regs 0 and 1.
        !            54:    This exists only to test compiler features that will
        !            55:    be needed for RISC chips.  It is not usable
        !            56:    and is not intended to be usable on this cpu.  */
        !            57: #define TARGET_REGPARM (target_flags & 020)
        !            58: /* Compile with 16-bit `int'.  */
        !            59: #define TARGET_SHORT (target_flags & 040)
        !            60: 
        !            61: /* Macro to define tables used to set the flags.
        !            62:    This is a list in braces of pairs in braces,
        !            63:    each pair being { "NAME", VALUE }
        !            64:    where VALUE is the bits to set or minus the bits to clear.
        !            65:    An empty string NAME is used to identify the default VALUE.  */
        !            66: 
        !            67: #define TARGET_SWITCHES  \
        !            68:   { { "68020", 5},                             \
        !            69:     { "68881", 2},                             \
        !            70:     { "bitfield", 4},                          \
        !            71:     { "68000", -5},                            \
        !            72:     { "soft-float", -2},                       \
        !            73:     { "nobitfield", -4},                       \
        !            74:     { "rtd", 8},                               \
        !            75:     { "nortd", -8},                            \
        !            76:     { "short", 040},                           \
        !            77:     { "noshort", -040},                                \
        !            78:     { "", TARGET_DEFAULT}}
        !            79: /* TARGET_DEFAULT is defined in tm-sun*.h and tm-isi68.h, etc.  */
        !            80: 
        !            81: /* target machine storage layout */
        !            82: 
        !            83: /* Define this if most significant bit is lowest numbered
        !            84:    in instructions that operate on numbered bit-fields.
        !            85:    This is true for 68020 insns such as bfins and bfexts.
        !            86:    We make it true always by avoiding using the single-bit insns
        !            87:    except in special cases with constant bit numbers.  */
        !            88: #define BITS_BIG_ENDIAN
        !            89: 
        !            90: /* Define this if most significant byte of a word is the lowest numbered.  */
        !            91: /* That is true on the 68000.  */
        !            92: #define BYTES_BIG_ENDIAN
        !            93: 
        !            94: /* Define this if most significant word of a multiword number is numbered.  */
        !            95: /* For 68000 we can decide arbitrarily
        !            96:    since there are no machine instructions for them.  */
        !            97: /* #define WORDS_BIG_ENDIAN */
        !            98: 
        !            99: /* number of bits in an addressible storage unit */
        !           100: #define BITS_PER_UNIT 8
        !           101: 
        !           102: /* Width in bits of a "word", which is the contents of a machine register.
        !           103:    Note that this is not necessarily the width of data type `int';
        !           104:    if using 16-bit ints on a 68000, this would still be 32.
        !           105:    But on a machine with 16-bit registers, this would be 16.  */
        !           106: #define BITS_PER_WORD 32
        !           107: 
        !           108: /* Width of a word, in units (bytes).  */
        !           109: #define UNITS_PER_WORD 4
        !           110: 
        !           111: /* Width in bits of a pointer.
        !           112:    See also the macro `Pmode' defined below.  */
        !           113: #define POINTER_SIZE 32
        !           114: 
        !           115: /* Allocation boundary (in *bits*) for storing pointers in memory.  */
        !           116: #define POINTER_BOUNDARY 16
        !           117: 
        !           118: /* Allocation boundary (in *bits*) for storing arguments in argument list.  */
        !           119: #define PARM_BOUNDARY (TARGET_SHORT ? 16 : 32)
        !           120: 
        !           121: /* Boundary (in *bits*) on which stack pointer should be aligned.  */
        !           122: #define STACK_BOUNDARY 16
        !           123: 
        !           124: /* Allocation boundary (in *bits*) for the code of a function.  */
        !           125: #define FUNCTION_BOUNDARY 16
        !           126: 
        !           127: /* Alignment of field after `int : 0' in a structure.  */
        !           128: #define EMPTY_FIELD_BOUNDARY 16
        !           129: 
        !           130: /* No data type wants to be aligned rounder than this.  */
        !           131: #define BIGGEST_ALIGNMENT 16
        !           132: 
        !           133: /* Define this if move instructions will actually fail to work
        !           134:    when given unaligned data.  */
        !           135: #define STRICT_ALIGNMENT
        !           136: 
        !           137: /* Define number of bits in most basic integer type.
        !           138:    (If undefined, default is BITS_PER_WORD).  */
        !           139: 
        !           140: #define INT_TYPE_SIZE (TARGET_SHORT ? 16 : 32)
        !           141: 
        !           142: /* Standard register usage.  */
        !           143: 
        !           144: /* Number of actual hardware registers.
        !           145:    The hardware registers are assigned numbers for the compiler
        !           146:    from 0 to just below FIRST_PSEUDO_REGISTER.
        !           147:    All registers that the compiler knows about must be given numbers,
        !           148:    even those that are not normally considered general registers.
        !           149:    For the 68000, we give the data registers numbers 0-7,
        !           150:    the address registers numbers 010-017,
        !           151:    and the 68881 floating point registers numbers 020-027.  */
        !           152: #define FIRST_PSEUDO_REGISTER 24
        !           153: 
        !           154: /* 1 for registers that have pervasive standard uses
        !           155:    and are not available for the register allocator.
        !           156:    On the 68000, only the stack pointer is such.  */
        !           157: #define FIXED_REGISTERS  \
        !           158:  {0, 0, 0, 0, 0, 0, 0, 0, \
        !           159:   0, 0, 0, 0, 0, 0, 0, 1, \
        !           160:   0, 0, 0, 0, 0, 0, 0, 0}
        !           161: 
        !           162: /* 1 for registers not available across function calls.
        !           163:    These must include the FIXED_REGISTERS and also any
        !           164:    registers that can be used without being saved.
        !           165:    The latter must include the registers where values are returned
        !           166:    and the register where structure-value addresses are passed.
        !           167:    Aside from that, you can include as many other registers as you like.  */
        !           168: #define CALL_USED_REGISTERS \
        !           169:  {1, 1, 0, 0, 0, 0, 0, 0, \
        !           170:   1, 1, 0, 0, 0, 0, 0, 1, \
        !           171:   1, 1, 0, 0, 0, 0, 0, 0}
        !           172: 
        !           173: /* Return number of consecutive hard regs needed starting at reg REGNO
        !           174:    to hold something of mode MODE.
        !           175:    This is ordinarily the length in words of a value of mode MODE
        !           176:    but can be less for certain modes in special long registers.
        !           177: 
        !           178:    On the 68000, ordinary registers hold 32 bits worth;
        !           179:    for the 68881 registers, a single register is always enough for
        !           180:    anything that can be stored in them at all.  */
        !           181: #define HARD_REGNO_NREGS(REGNO, MODE)   \
        !           182:   ((REGNO) >= 16 ? 1                           \
        !           183:    : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           184: 
        !           185: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
        !           186:    On the 68000, the cpu registers can hold any mode but the 68881 registers
        !           187:    can hold only SFmode or DFmode.  And the 68881 registers can't hold anything
        !           188:    if 68881 use is disabled.  */
        !           189: #define HARD_REGNO_MODE_OK(REGNO, MODE) \
        !           190:   ((REGNO) < 16 || (TARGET_68881 && ((MODE) == SFmode || (MODE) == DFmode)))
        !           191: 
        !           192: /* Value is 1 if it is a good idea to tie two pseudo registers
        !           193:    when one has mode MODE1 and one has mode MODE2.
        !           194:    If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
        !           195:    for any hard reg, then this must be 0 for correct output.  */
        !           196: #define MODES_TIEABLE_P(MODE1, MODE2) \
        !           197:   (((MODE1) == SFmode || (MODE1) == DFmode) \
        !           198:    == ((MODE2) == SFmode || (MODE2) == DFmode))
        !           199: 
        !           200: /* Specify the registers used for certain standard purposes.
        !           201:    The values of these macros are register numbers.  */
        !           202: 
        !           203: /* m68000 pc isn't overloaded on a register.  */
        !           204: /* #define PC_REGNUM  */
        !           205: 
        !           206: /* Register to use for pushing function arguments.  */
        !           207: #define STACK_POINTER_REGNUM 15
        !           208: 
        !           209: /* Base register for access to local variables of the function.  */
        !           210: #define FRAME_POINTER_REGNUM 14
        !           211: 
        !           212: /* Value should be nonzero if functions must have frame pointers.
        !           213:    Zero means the frame pointer need not be set up (and parms
        !           214:    may be accessed via the stack pointer) in functions that seem suitable.
        !           215:    This is computed in `reload', in reload1.c.  */
        !           216: #define FRAME_POINTER_REQUIRED 0
        !           217: 
        !           218: /* Base register for access to arguments of the function.  */
        !           219: #define ARG_POINTER_REGNUM 14
        !           220: 
        !           221: /* Register in which static-chain is passed to a function.  */
        !           222: #define STATIC_CHAIN_REGNUM 8
        !           223: 
        !           224: /* Register in which address to store a structure value
        !           225:    is passed to a function.  */
        !           226: #define STRUCT_VALUE_REGNUM 9
        !           227: 
        !           228: /* Define the classes of registers for register constraints in the
        !           229:    machine description.  Also define ranges of constants.
        !           230: 
        !           231:    One of the classes must always be named ALL_REGS and include all hard regs.
        !           232:    If there is more than one class, another class must be named NO_REGS
        !           233:    and contain no registers.
        !           234: 
        !           235:    The name GENERAL_REGS must be the name of a class (or an alias for
        !           236:    another name such as ALL_REGS).  This is the class of registers
        !           237:    that is allowed by "g" or "r" in a register constraint.
        !           238:    Also, registers outside this class are allocated only when
        !           239:    instructions express preferences for them.
        !           240: 
        !           241:    The classes must be numbered in nondecreasing order; that is,
        !           242:    a larger-numbered class must never be contained completely
        !           243:    in a smaller-numbered class.
        !           244: 
        !           245:    For any two classes, it is very desirable that there be another
        !           246:    class that represents their union.  */
        !           247:    
        !           248: /* The 68000 has three kinds of registers, so eight classes would be
        !           249:    a complete set.  One of them is not needed.  */
        !           250: 
        !           251: enum reg_class { NO_REGS, DATA_REGS, ADDR_REGS, GENERAL_REGS, FP_REGS, FP_OR_DATA_REGS, ALL_REGS, LIM_REG_CLASSES };
        !           252: 
        !           253: #define N_REG_CLASSES (int) LIM_REG_CLASSES
        !           254: 
        !           255: /* Give names of register classes as strings for dump file.   */
        !           256: 
        !           257: #define REG_CLASS_NAMES \
        !           258:  {"NO_REGS", "DATA_REGS", "ADDR_REGS", "GENERAL_REGS",  \
        !           259:   "FP_REGS", "FP_OR_DATA_REGS", "ALL_REGS" }
        !           260: 
        !           261: /* Define which registers fit in which classes.
        !           262:    This is an initializer for a vector of HARD_REG_SET
        !           263:    of length N_REG_CLASSES.  */
        !           264: 
        !           265: #define REG_CLASS_CONTENTS {0, 0xff, 0xff00, 0xffff, 0xff0000, 0xff00ff, 0xffffff}
        !           266: 
        !           267: /* The same information, inverted:
        !           268:    Return the class number of the smallest class containing
        !           269:    reg number REGNO.  This could be a conditional expression
        !           270:    or could index an array.  */
        !           271: 
        !           272: #define REGNO_REG_CLASS(REGNO) \
        !           273:  ((REGNO) >= 16 ? FP_REGS : (REGNO) < 8 ? DATA_REGS : ADDR_REGS)
        !           274: 
        !           275: /* The class value for index registers, and the one for base regs.  */
        !           276: 
        !           277: #define INDEX_REG_CLASS GENERAL_REGS
        !           278: #define BASE_REG_CLASS ADDR_REGS
        !           279: 
        !           280: /* Get reg_class from a letter such as appears in the machine description.  */
        !           281: 
        !           282: #define REG_CLASS_FROM_LETTER(C) \
        !           283:   ((C) == 'a' ? ADDR_REGS : ((C) == 'd' ? DATA_REGS : ((C) == 'f' ? FP_REGS : NO_REGS)))
        !           284: 
        !           285: /* The letters I, J, K, L and M in a register constraint string
        !           286:    can be used to stand for particular ranges of immediate operands.
        !           287:    This macro defines what the ranges are.
        !           288:    C is the letter, and VALUE is a constant value.
        !           289:    Return 1 if VALUE is in the range specified by C.
        !           290: 
        !           291:    For the 68000, `I' is used for the range 1 to 8
        !           292:    allowed as immediate shift counts and in addq.
        !           293:    `J' is used for the range of signed numbers that fit in 16 bits.
        !           294:    `K' is for numbers that moveq can't handle.
        !           295:    `L' is for range -8 to -1, range of values that can be added with subq.  */
        !           296: 
        !           297: #define CONST_OK_FOR_LETTER_P(VALUE, C)  \
        !           298:   ((C) == 'I' ? (VALUE) > 0 && (VALUE) <= 8 :    \
        !           299:    (C) == 'J' ? (VALUE) >= -0x8000 && (VALUE) <= 0x7FFF :      \
        !           300:    (C) == 'K' ? (VALUE) < -0x80 || (VALUE) >= 0x80 :   \
        !           301:    (C) == 'L' ? (VALUE) < 0 && (VALUE) >= -8 : 0)
        !           302: 
        !           303: /* Similar, but for floating constants, and defining letters G and H.
        !           304:    Here VALUE is the CONST_DOUBLE rtx itself.  */
        !           305: 
        !           306: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C)  \
        !           307:   ((C) == 'G' ? ! (TARGET_68881 && standard_68881_constant_p (VALUE)) : 1)
        !           308: 
        !           309: /* Given an rtx X being reloaded into a reg required to be
        !           310:    in class CLASS, return the class of reg to actually use.
        !           311:    In general this is just CLASS; but on some machines
        !           312:    in some cases it is preferable to use a more restrictive class.
        !           313:    On the 68000 series, use a data reg if possible when the
        !           314:    value is a constant in the range where moveq could be used.  */
        !           315: #define PREFERRED_RELOAD_CLASS(X,CLASS)  \
        !           316:   ((GET_CODE (X) == CONST_INT                          \
        !           317:     && (unsigned) (INTVAL (X) + 0x80) < 0x100  \
        !           318:     && (CLASS) != ADDR_REGS)                           \
        !           319:    ? DATA_REGS : (CLASS))
        !           320: 
        !           321: /* Return the maximum number of consecutive registers
        !           322:    needed to represent mode MODE in a register of class CLASS.  */
        !           323: /* On the 68000, this is the size of MODE in words,
        !           324:    except in the FP regs, where a single reg is always enough.  */
        !           325: #define CLASS_MAX_NREGS(CLASS, MODE)   \
        !           326:  ((CLASS) == FP_REGS ? 1                       \
        !           327:   : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           328: 
        !           329: /* Stack layout; function entry, exit and calling.  */
        !           330: 
        !           331: /* Define this if pushing a word on the stack
        !           332:    makes the stack pointer a smaller address.  */
        !           333: #define STACK_GROWS_DOWNWARD
        !           334: 
        !           335: /* Define this if the nominal address of the stack frame
        !           336:    is at the high-address end of the local variables;
        !           337:    that is, each additional local variable allocated
        !           338:    goes at a more negative offset in the frame.  */
        !           339: #define FRAME_GROWS_DOWNWARD
        !           340: 
        !           341: /* Offset within stack frame to start allocating local variables at.
        !           342:    If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
        !           343:    first local allocated.  Otherwise, it is the offset to the BEGINNING
        !           344:    of the first local allocated.  */
        !           345: #define STARTING_FRAME_OFFSET 0
        !           346: 
        !           347: /* If we generate an insn to push BYTES bytes,
        !           348:    this says how many the stack pointer really advances by.
        !           349:    On the 68000, sp@- in a byte insn really pushes a word.  */
        !           350: #define PUSH_ROUNDING(BYTES) (((BYTES) + 1) & ~1)
        !           351: 
        !           352: /* Offset of first parameter from the argument pointer register value.  */
        !           353: #define FIRST_PARM_OFFSET 8
        !           354: 
        !           355: /* Value is 1 if returning from a function call automatically
        !           356:    pops the arguments described by the number-of-args field in the call.
        !           357:    FUNTYPE is the data type of the function (as a tree),
        !           358:    or for a library call it is an identifier node for the subroutine name.
        !           359: 
        !           360:    On the 68000, the RTS insn cannot pop anything.
        !           361:    On the 68010, the RTD insn may be used to pop them if the number
        !           362:      of args is fixed, but if the number is variable then the caller
        !           363:      must pop them all.  RTD can't be used for library calls now
        !           364:      because the library is compiled with the Unix compiler.
        !           365:    Use of RTD is a selectable option, since it is incompatible with
        !           366:    standard Unix calling sequences.  If the option is not selected,
        !           367:    the caller must always pop the args.  */
        !           368: 
        !           369: #define RETURN_POPS_ARGS(FUNTYPE)   \
        !           370:   (TARGET_RTD && TREE_CODE (FUNTYPE) != IDENTIFIER_NODE                \
        !           371:    && (TYPE_ARG_TYPES (FUNTYPE) == 0                           \
        !           372:        || TREE_VALUE (tree_last (TYPE_ARG_TYPES (FUNTYPE))) == void_type_node))
        !           373: 
        !           374: /* Define how to find the value returned by a function.
        !           375:    VALTYPE is the data type of the value (as a tree).
        !           376:    If the precise function being called is known, FUNC is its FUNCTION_DECL;
        !           377:    otherwise, FUNC is 0.  */
        !           378: 
        !           379: /* On the 68000 the return value is in D0 regardless.  */   
        !           380: 
        !           381: #define FUNCTION_VALUE(VALTYPE, FUNC)  \
        !           382:   gen_rtx (REG, TYPE_MODE (VALTYPE), 0)
        !           383: 
        !           384: /* Define how to find the value returned by a library function
        !           385:    assuming the value has mode MODE.  */
        !           386: 
        !           387: /* On the 68000 the return value is in D0 regardless.  */   
        !           388: 
        !           389: #define LIBCALL_VALUE(MODE)  gen_rtx (REG, MODE, 0)
        !           390: 
        !           391: /* 1 if N is a possible register number for a function value.
        !           392:    On the 68000, d0 is the only register thus used.  */
        !           393: 
        !           394: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 0)
        !           395: 
        !           396: /* 1 if N is a possible register number for function argument passing.
        !           397:    On the 68000, no registers are used in this way.  */
        !           398: 
        !           399: #define FUNCTION_ARG_REGNO_P(N) 0
        !           400: 
        !           401: /* Define a data type for recording info about an argument list
        !           402:    during the scan of that argument list.  This data type should
        !           403:    hold all necessary information about the function itself
        !           404:    and about the args processed so far, enough to enable macros
        !           405:    such as FUNCTION_ARG to determine where the next arg should go.
        !           406: 
        !           407:    On the m68k, this is a single integer, which is a number of bytes
        !           408:    of arguments scanned so far.  */
        !           409: 
        !           410: #define CUMULATIVE_ARGS int
        !           411: 
        !           412: /* Initialize a variable CUM of type CUMULATIVE_ARGS
        !           413:    for a call to a function whose data type is FNTYPE.
        !           414:    For a library call, FNTYPE is 0.
        !           415: 
        !           416:    On the m68k, the offset starts at 0.  */
        !           417: 
        !           418: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE)       \
        !           419:  ((CUM) = 0)
        !           420: 
        !           421: /* Update the data in CUM to advance over an argument
        !           422:    of mode MODE and data type TYPE.
        !           423:    (TYPE is null for libcalls where that information may not be available.)  */
        !           424: 
        !           425: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)   \
        !           426:  ((CUM) += ((MODE) != BLKmode                  \
        !           427:            ? (GET_MODE_SIZE (MODE) + 3) & ~3   \
        !           428:            : (int_size_in_bytes (TYPE) + 3) & ~3))
        !           429: 
        !           430: /* Define where to put the arguments to a function.
        !           431:    Value is zero to push the argument on the stack,
        !           432:    or a hard register in which to store the argument.
        !           433: 
        !           434:    MODE is the argument's machine mode.
        !           435:    TYPE is the data type of the argument (as a tree).
        !           436:     This is null for libcalls where that information may
        !           437:     not be available.
        !           438:    CUM is a variable of type CUMULATIVE_ARGS which gives info about
        !           439:     the preceding args and about the function being called.
        !           440:    NAMED is nonzero if this argument is a named parameter
        !           441:     (otherwise it is an extra parameter matching an ellipsis).  */
        !           442: 
        !           443: /* On the 68000 all args are pushed, except if -mregparm is specified
        !           444:    then the first two words of arguments are passed in d0, d1.
        !           445:    *NOTE* -mregparm does not work.
        !           446:    It exists only to test register calling conventions.  */
        !           447: 
        !           448: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED) \
        !           449: ((TARGET_REGPARM && (CUM) < 8) ? gen_rtx (REG, (MODE), (CUM) / 4) : 0)
        !           450: 
        !           451: /* For an arg passed partly in registers and partly in memory,
        !           452:    this is the number of registers used.
        !           453:    For args passed entirely in registers or entirely in memory, zero.  */
        !           454: 
        !           455: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) \
        !           456: ((TARGET_REGPARM && (CUM) < 8                                  \
        !           457:   && 8 < ((CUM) + ((MODE) == BLKmode                           \
        !           458:                      ? int_size_in_bytes (TYPE)                \
        !           459:                      : GET_MODE_SIZE (MODE))))                 \
        !           460:  ? 2 - (CUM) / 4 : 0)
        !           461: 
        !           462: /* This macro generates the assembly code for function entry.
        !           463:    FILE is a stdio stream to output the code to.
        !           464:    SIZE is an int: how many units of temporary storage to allocate.
        !           465:    Refer to the array `regs_ever_live' to determine which registers
        !           466:    to save; `regs_ever_live[I]' is nonzero if register number I
        !           467:    is ever used in the function.  This macro is responsible for
        !           468:    knowing which registers should not be saved even if used.  */
        !           469: 
        !           470: /* Note that the order of the bit mask for fmovem is the opposite
        !           471:    of the order for movem!  */
        !           472: 
        !           473: #define FUNCTION_PROLOGUE(FILE, SIZE)     \
        !           474: { register int regno;                                          \
        !           475:   register int mask = 0;                                       \
        !           476:   static char *reg_names[] = REGISTER_NAMES;                   \
        !           477:   extern char call_used_regs[];                                        \
        !           478:   int fsize = (SIZE);                                          \
        !           479:   if (frame_pointer_needed)                                    \
        !           480:     { if (TARGET_68020 || fsize < 0x8000)                      \
        !           481:         fprintf (FILE, "\tlink a6,#%d\n", -fsize);             \
        !           482:       else                                                     \
        !           483:        fprintf (FILE, "\tlink a6,#0\n\tsubl #%d,sp\n", fsize); }  \
        !           484:   for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++)     \
        !           485:     if (regs_ever_live[regno] && ! call_used_regs[regno])      \
        !           486:        mask |= 1 << (regno - 16);                              \
        !           487:   if (mask != 0)                                               \
        !           488:     fprintf (FILE, "\tfmovem #0x%x,sp@-\n", mask & 0xff);       \
        !           489:   mask = 0;                                                    \
        !           490:   for (regno = 0; regno < 16; regno++)                         \
        !           491:     if (regs_ever_live[regno] && ! call_used_regs[regno])      \
        !           492:        mask |= 1 << (15 - regno);                              \
        !           493:   if (frame_pointer_needed)                                    \
        !           494:     mask &= ~ (1 << (15-FRAME_POINTER_REGNUM));                        \
        !           495:   if (exact_log2 (mask) >= 0)                                  \
        !           496:     fprintf (FILE, "\tmovel %s,sp@-\n", reg_names[15 - exact_log2 (mask)]);  \
        !           497:   else if (mask) fprintf (FILE, "\tmoveml #0x%x,sp@-\n", mask); }
        !           498: 
        !           499: /* Output assembler code to FILE to increment profiler label # LABELNO
        !           500:    for profiling a function entry.  */
        !           501: 
        !           502: #define FUNCTION_PROFILER(FILE, LABELNO)  \
        !           503:    fprintf (FILE, "\tlea LP%d,a0\n\tjsr mcount\n", (LABELNO));
        !           504: 
        !           505: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
        !           506:    the stack pointer does not matter.  The value is tested only in
        !           507:    functions that have frame pointers.
        !           508:    No definition is equivalent to always zero.  */
        !           509: 
        !           510: #define EXIT_IGNORE_STACK 1
        !           511: 
        !           512: /* This macro generates the assembly code for function exit,
        !           513:    on machines that need it.  If FUNCTION_EPILOGUE is not defined
        !           514:    then individual return instructions are generated for each
        !           515:    return statement.  Args are same as for FUNCTION_PROLOGUE.
        !           516: 
        !           517:    The function epilogue should not depend on the current stack pointer!
        !           518:    It should use the frame pointer only.  This is mandatory because
        !           519:    of alloca; we also take advantage of it to omit stack adjustments
        !           520:    before returning.  */
        !           521: 
        !           522: #define FUNCTION_EPILOGUE(FILE, SIZE) \
        !           523: { register int regno;                                          \
        !           524:   register int mask, fmask;                                    \
        !           525:   register int nregs;                                          \
        !           526:   int offset, foffset;                                         \
        !           527:   extern char call_used_regs[];                                        \
        !           528:   static char *reg_names[] = REGISTER_NAMES;                   \
        !           529:   extern int current_function_pops_args;                       \
        !           530:   extern int current_function_args_size;                       \
        !           531:   int fsize = (SIZE);                                          \
        !           532:   int big = 0;                                                 \
        !           533:   nregs = 0;  fmask = 0;                                       \
        !           534:   for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++)     \
        !           535:     if (regs_ever_live[regno] && ! call_used_regs[regno])      \
        !           536:       { nregs++; fmask |= 1 << (23 - regno); }                 \
        !           537:   foffset = nregs * 12;                                                \
        !           538:   nregs = 0;  mask = 0;                                                \
        !           539:   if (frame_pointer_needed) regs_ever_live[FRAME_POINTER_REGNUM] = 0; \
        !           540:   for (regno = 0; regno < 16; regno++)                         \
        !           541:     if (regs_ever_live[regno] && ! call_used_regs[regno])      \
        !           542:       { nregs++; mask |= 1 << regno; }                         \
        !           543:   offset = foffset + nregs * 4;                                        \
        !           544:   if (offset + fsize >= 0x8000 && frame_pointer_needed && (mask || fmask)) \
        !           545:     { fprintf (FILE, "\tmovel #%d,a0\n", -fsize);              \
        !           546:       fsize = 0, big = 1; }                                    \
        !           547:   if (exact_log2 (mask) >= 0) {                                        \
        !           548:     if (big)                                                   \
        !           549:       fprintf (FILE, "\tmovel a6@(-%d,a0:l),%s\n",             \
        !           550:               offset + fsize, reg_names[exact_log2 (mask)]);   \
        !           551:     else if (! frame_pointer_needed)                           \
        !           552:       fprintf (FILE, "\tmovel sp@+,%s\n",                      \
        !           553:               reg_names[exact_log2 (mask)]);                   \
        !           554:     else                                                       \
        !           555:       fprintf (FILE, "\tmovel a6@(-%d),%s\n",                  \
        !           556:               offset + fsize, reg_names[exact_log2 (mask)]); } \
        !           557:   else if (mask) {                                             \
        !           558:     if (big)                                                   \
        !           559:       fprintf (FILE, "\tmoveml a6@(-%d,a0:l),#0x%x\n",         \
        !           560:               offset + fsize, mask);                           \
        !           561:     else if (! frame_pointer_needed)                           \
        !           562:       fprintf (FILE, "\tmoveml sp@+,#0x%x\n", mask);           \
        !           563:     else                                                       \
        !           564:       fprintf (FILE, "\tmoveml a6@(-%d),#0x%x\n",              \
        !           565:               offset + fsize, mask); }                         \
        !           566:   if (fmask) {                                                 \
        !           567:     if (big)                                                   \
        !           568:       fprintf (FILE, "\tfmovem a6@(-%d,a0:l),#0x%x\n",         \
        !           569:               foffset + fsize, fmask);                         \
        !           570:     else if (! frame_pointer_needed)                           \
        !           571:       fprintf (FILE, "\tfmovem sp@+,#0x%x\n", fmask);          \
        !           572:     else                                                       \
        !           573:       fprintf (FILE, "\tfmovem a6@(-%d),#0x%x\n",              \
        !           574:               foffset + fsize, fmask); }                       \
        !           575:   if (frame_pointer_needed)                                    \
        !           576:     fprintf (FILE, "\tunlk a6\n");                             \
        !           577:   if (current_function_pops_args && current_function_args_size)        \
        !           578:     fprintf (FILE, "\trtd #%d\n", current_function_args_size); \
        !           579:   else fprintf (FILE, "\trts\n"); }
        !           580: 
        !           581: /* If the memory address ADDR is relative to the frame pointer,
        !           582:    correct it to be relative to the stack pointer instead.
        !           583:    This is for when we don't use a frame pointer.
        !           584:    ADDR should be a variable name.  */
        !           585: 
        !           586: #define FIX_FRAME_POINTER_ADDRESS(ADDR,DEPTH)  \
        !           587: { int offset = -1;                                                     \
        !           588:   if (ADDR == frame_pointer_rtx)                                       \
        !           589:     offset = 0;                                                                \
        !           590:   else if (GET_CODE (ADDR) == PLUS && XEXP (ADDR, 0) == frame_pointer_rtx \
        !           591:           && GET_CODE (XEXP (ADDR, 1)) == CONST_INT)                   \
        !           592:     offset = INTVAL (XEXP (ADDR, 1));                                  \
        !           593:   if (offset >= 0)                                                     \
        !           594:     { int regno;                                                       \
        !           595:       extern char call_used_regs[];                                    \
        !           596:       for (regno = 16; regno < FIRST_PSEUDO_REGISTER; regno++)         \
        !           597:         if (regs_ever_live[regno] && ! call_used_regs[regno])          \
        !           598:           offset += 12;                                                        \
        !           599:       for (regno = 0; regno < 16; regno++)                             \
        !           600:        if (regs_ever_live[regno] && ! call_used_regs[regno])           \
        !           601:          offset += 4;                                                  \
        !           602:       offset -= 4;                                                     \
        !           603:       ADDR = plus_constant (stack_pointer_rtx, offset + (DEPTH)); } }
        !           604: 
        !           605: /* Addressing modes, and classification of registers for them.  */
        !           606: 
        !           607: #define HAVE_POST_INCREMENT
        !           608: /* #define HAVE_POST_DECREMENT */
        !           609: 
        !           610: #define HAVE_PRE_DECREMENT
        !           611: /* #define HAVE_PRE_INCREMENT */
        !           612: 
        !           613: /* Macros to check register numbers against specific register classes.  */
        !           614: 
        !           615: /* These assume that REGNO is a hard or pseudo reg number.
        !           616:    They give nonzero only if REGNO is a hard reg of the suitable class
        !           617:    or a pseudo reg currently allocated to a suitable hard reg.
        !           618:    Since they use reg_renumber, they are safe only once reg_renumber
        !           619:    has been allocated, which happens in local-alloc.c.  */
        !           620: 
        !           621: #define REGNO_OK_FOR_INDEX_P(REGNO) \
        !           622: ((REGNO) < 16 || (unsigned) reg_renumber[REGNO] < 16)
        !           623: #define REGNO_OK_FOR_BASE_P(REGNO) \
        !           624: (((REGNO) ^ 010) < 8 || (unsigned) (reg_renumber[REGNO] ^ 010) < 8)
        !           625: #define REGNO_OK_FOR_DATA_P(REGNO) \
        !           626: ((REGNO) < 8 || (unsigned) reg_renumber[REGNO] < 8)
        !           627: #define REGNO_OK_FOR_FP_P(REGNO) \
        !           628: (((REGNO) ^ 020) < 8 || (unsigned) (reg_renumber[REGNO] ^ 020) < 8)
        !           629: 
        !           630: /* Now macros that check whether X is a register and also,
        !           631:    strictly, whether it is in a specified class.
        !           632: 
        !           633:    These macros are specific to the 68000, and may be used only
        !           634:    in code for printing assembler insns and in conditions for
        !           635:    define_optimization.  */
        !           636: 
        !           637: /* 1 if X is a data register.  */
        !           638: 
        !           639: #define DATA_REG_P(X) (REG_P (X) && REGNO_OK_FOR_DATA_P (REGNO (X)))
        !           640: 
        !           641: /* 1 if X is an fp register.  */
        !           642: 
        !           643: #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X)))
        !           644: 
        !           645: /* 1 if X is an address register  */
        !           646: 
        !           647: #define ADDRESS_REG_P(X) (REG_P (X) && REGNO_OK_FOR_BASE_P (REGNO (X)))
        !           648: 
        !           649: /* Maximum number of registers that can appear in a valid memory address.  */
        !           650: 
        !           651: #define MAX_REGS_PER_ADDRESS 2
        !           652: 
        !           653: /* Recognize any constant value that is a valid address.  */
        !           654: 
        !           655: #define CONSTANT_ADDRESS_P(X)  CONSTANT_P (X)
        !           656: 
        !           657: /* Nonzero if the constant value X is a legitimate general operand.
        !           658:    It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE.  */
        !           659: 
        !           660: #define LEGITIMATE_CONSTANT_P(X) 1
        !           661: 
        !           662: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
        !           663:    and check its validity for a certain class.
        !           664:    We have two alternate definitions for each of them.
        !           665:    The usual definition accepts all pseudo regs; the other rejects
        !           666:    them unless they have been allocated suitable hard regs.
        !           667:    The symbol REG_OK_STRICT causes the latter definition to be used.
        !           668: 
        !           669:    Most source files want to accept pseudo regs in the hope that
        !           670:    they will get allocated to the class that the insn wants them to be in.
        !           671:    Source files for reload pass need to be strict.
        !           672:    After reload, it makes no difference, since pseudo regs have
        !           673:    been eliminated by then.  */
        !           674: 
        !           675: #ifndef REG_OK_STRICT
        !           676: 
        !           677: /* Nonzero if X is a hard reg that can be used as an index
        !           678:    or if it is a pseudo reg.  */
        !           679: #define REG_OK_FOR_INDEX_P(X) ((REGNO (X) ^ 020) >= 8)
        !           680: /* Nonzero if X is a hard reg that can be used as a base reg
        !           681:    or if it is a pseudo reg.  */
        !           682: #define REG_OK_FOR_BASE_P(X) ((REGNO (X) & ~027) != 0)
        !           683: 
        !           684: #else
        !           685: 
        !           686: /* Nonzero if X is a hard reg that can be used as an index.  */
        !           687: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
        !           688: /* Nonzero if X is a hard reg that can be used as a base reg.  */
        !           689: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
        !           690: 
        !           691: #endif
        !           692: 
        !           693: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
        !           694:    that is a valid memory address for an instruction.
        !           695:    The MODE argument is the machine mode for the MEM expression
        !           696:    that wants to use this address.
        !           697: 
        !           698:    The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS.  */
        !           699: 
        !           700: #define INDIRECTABLE_1_ADDRESS_P(X)  \
        !           701:   (CONSTANT_ADDRESS_P (X)                                              \
        !           702:    || (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X))                   \
        !           703:    || ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_INC)           \
        !           704:        && REG_P (XEXP (X, 0))                                          \
        !           705:        && REG_OK_FOR_BASE_P (XEXP (X, 0)))                             \
        !           706:    || (GET_CODE (X) == PLUS                                            \
        !           707:        && REG_P (XEXP (X, 0)) && REG_OK_FOR_BASE_P (XEXP (X, 0))       \
        !           708:        && GET_CODE (XEXP (X, 1)) == CONST_INT                          \
        !           709:        && ((unsigned) INTVAL (XEXP (X, 1)) + 0x8000) < 0x10000))
        !           710: 
        !           711: #if 0
        !           712: /* This should replace the last two lines
        !           713:    except that Sun's assembler does not seem to handle such operands.  */
        !           714:        && (TARGET_68020 ? CONSTANT_ADDRESS_P (XEXP (X, 1))             \
        !           715:           : (GET_CODE (XEXP (X, 1)) == CONST_INT                       \
        !           716:              && ((unsigned) INTVAL (XEXP (X, 1)) + 0x8000) < 0x10000))))
        !           717: #endif
        !           718: 
        !           719: 
        !           720: #define GO_IF_NONINDEXED_ADDRESS(X, ADDR)  \
        !           721: { if (INDIRECTABLE_1_ADDRESS_P (X)) goto ADDR; }
        !           722: 
        !           723: #define GO_IF_INDEXABLE_BASE(X, ADDR)  \
        !           724: { if (GET_CODE (X) == LABEL_REF) goto ADDR;                            \
        !           725:   if (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X)) goto ADDR; }
        !           726: 
        !           727: #define GO_IF_INDEXING(X, ADDR)        \
        !           728: { if (GET_CODE (X) == PLUS && LEGITIMATE_INDEX_P (XEXP (X, 0)))                \
        !           729:     { GO_IF_INDEXABLE_BASE (XEXP (X, 1), ADDR); }                      \
        !           730:   if (GET_CODE (X) == PLUS && LEGITIMATE_INDEX_P (XEXP (X, 1)))                \
        !           731:     { GO_IF_INDEXABLE_BASE (XEXP (X, 0), ADDR); } }
        !           732: 
        !           733: #define GO_IF_INDEXED_ADDRESS(X, ADDR)  \
        !           734: { GO_IF_INDEXING (X, ADDR);                                            \
        !           735:   if (GET_CODE (X) == PLUS)                                            \
        !           736:     { if (GET_CODE (XEXP (X, 1)) == CONST_INT                          \
        !           737:          && (unsigned) INTVAL (XEXP (X, 1)) + 0x80 < 0x100)            \
        !           738:        { rtx go_temp = XEXP (X, 0); GO_IF_INDEXING (go_temp, ADDR); }  \
        !           739:       if (GET_CODE (XEXP (X, 0)) == CONST_INT                          \
        !           740:          && (unsigned) INTVAL (XEXP (X, 0)) + 0x80 < 0x100)            \
        !           741:        { rtx go_temp = XEXP (X, 1); GO_IF_INDEXING (go_temp, ADDR); } } }
        !           742: 
        !           743: #define LEGITIMATE_INDEX_REG_P(X)   \
        !           744:   ((GET_CODE (X) == REG && REG_OK_FOR_INDEX_P (X))     \
        !           745:    || (GET_CODE (X) == SIGN_EXTEND                     \
        !           746:        && GET_CODE (XEXP (X, 0)) == REG                        \
        !           747:        && GET_MODE (XEXP (X, 0)) == HImode             \
        !           748:        && REG_OK_FOR_INDEX_P (XEXP (X, 0))))
        !           749: 
        !           750: #define LEGITIMATE_INDEX_P(X)   \
        !           751:    (LEGITIMATE_INDEX_REG_P (X)                         \
        !           752:     || (TARGET_68020 && GET_CODE (X) == MULT           \
        !           753:        && LEGITIMATE_INDEX_REG_P (XEXP (X, 0))         \
        !           754:        && GET_CODE (XEXP (X, 1)) == CONST_INT          \
        !           755:        && (INTVAL (XEXP (X, 1)) == 2                   \
        !           756:            || INTVAL (XEXP (X, 1)) == 4                \
        !           757:            || INTVAL (XEXP (X, 1)) == 8)))
        !           758: 
        !           759: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)  \
        !           760: { GO_IF_NONINDEXED_ADDRESS (X, ADDR);                  \
        !           761:   GO_IF_INDEXED_ADDRESS (X, ADDR); }
        !           762: 
        !           763: /* Try machine-dependent ways of modifying an illegitimate address
        !           764:    to be legitimate.  If we find one, return the new, valid address.
        !           765:    This macro is used in only one place: `memory_address' in explow.c.
        !           766: 
        !           767:    OLDX is the address as it was before break_out_memory_refs was called.
        !           768:    In some cases it is useful to look at this to decide what needs to be done.
        !           769: 
        !           770:    MODE and WIN are passed so that this macro can use
        !           771:    GO_IF_LEGITIMATE_ADDRESS.
        !           772: 
        !           773:    It is always safe for this macro to do nothing.  It exists to recognize
        !           774:    opportunities to optimize the output.
        !           775: 
        !           776:    For the 68000, we handle X+REG by loading X into a register R and
        !           777:    using R+REG.  R will go in an address reg and indexing will be used.
        !           778:    However, if REG is a broken-out memory address or multiplication,
        !           779:    nothing needs to be done because REG can certainly go in an address reg.  */
        !           780: 
        !           781: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN)   \
        !           782: { register int ch = (X) != (OLDX);                                     \
        !           783:   if (GET_CODE (X) == PLUS)                                            \
        !           784:     { if (GET_CODE (XEXP (X, 0)) == MULT)                              \
        !           785:        ch = 1, XEXP (X, 0) = force_operand (XEXP (X, 0), 0);           \
        !           786:       if (GET_CODE (XEXP (X, 1)) == MULT)                              \
        !           787:        ch = 1, XEXP (X, 1) = force_operand (XEXP (X, 1), 0);           \
        !           788:       if (ch && GET_CODE (XEXP (X, 1)) == REG                          \
        !           789:          && GET_CODE (XEXP (X, 0)) == REG)                             \
        !           790:        return X;                                                       \
        !           791:       if (ch) { GO_IF_LEGITIMATE_ADDRESS (MODE, X, WIN); }             \
        !           792:       if (GET_CODE (XEXP (X, 0)) == REG                                        \
        !           793:               || (GET_CODE (XEXP (X, 0)) == SIGN_EXTEND                \
        !           794:                   && GET_CODE (XEXP (XEXP (X, 0), 0)) == REG           \
        !           795:                   && GET_MODE (XEXP (XEXP (X, 0), 0)) == HImode))      \
        !           796:        { register rtx temp = gen_reg_rtx (Pmode);                      \
        !           797:          register rtx val = force_operand (XEXP (X, 1), temp);         \
        !           798:          if (val != temp) emit_move_insn (temp, val);                  \
        !           799:          XEXP (X, 1) = temp;                                           \
        !           800:          return X; }                                                   \
        !           801:       else if (GET_CODE (XEXP (X, 1)) == REG                           \
        !           802:               || (GET_CODE (XEXP (X, 1)) == SIGN_EXTEND                \
        !           803:                   && GET_CODE (XEXP (XEXP (X, 1), 0)) == REG           \
        !           804:                   && GET_MODE (XEXP (XEXP (X, 1), 0)) == HImode))      \
        !           805:        { register rtx temp = gen_reg_rtx (Pmode);                      \
        !           806:          register rtx val = force_operand (XEXP (X, 0), temp);         \
        !           807:          if (val != temp) emit_move_insn (temp, val);                  \
        !           808:          XEXP (X, 0) = temp;                                           \
        !           809:          return X; }}}
        !           810: 
        !           811: /* Go to LABEL if ADDR (a legitimate address expression)
        !           812:    has an effect that depends on the machine mode it is used for.
        !           813:    On the 68000, only predecrement and postincrement address depend thus
        !           814:    (the amount of decrement or increment being the length of the operand).  */
        !           815: 
        !           816: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)       \
        !           817:  if (GET_CODE (ADDR) == POST_INC || GET_CODE (ADDR) == PRE_DEC) goto LABEL
        !           818: 
        !           819: /* Specify the machine mode that this machine uses
        !           820:    for the index in the tablejump instruction.  */
        !           821: #define CASE_VECTOR_MODE HImode
        !           822: 
        !           823: /* Define this if the tablejump instruction expects the table
        !           824:    to contain offsets from the address of the table.
        !           825:    Do not define this if the table should contain absolute addresses.  */
        !           826: #define CASE_VECTOR_PC_RELATIVE
        !           827: 
        !           828: /* Specify the tree operation to be used to convert reals to integers.  */
        !           829: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
        !           830: 
        !           831: /* This is the kind of divide that is easiest to do in the general case.  */
        !           832: #define EASY_DIV_EXPR TRUNC_DIV_EXPR
        !           833: 
        !           834: /* Define this as 1 if `char' should by default be signed; else as 0.  */
        !           835: #define DEFAULT_SIGNED_CHAR 1
        !           836: 
        !           837: /* Max number of bytes we can move from memory to memory
        !           838:    in one reasonably fast instruction.  */
        !           839: #define MOVE_MAX 4
        !           840: 
        !           841: /* Define this if zero-extension is slow (more than one real instruction).  */
        !           842: #define SLOW_ZERO_EXTEND
        !           843: 
        !           844: /* Nonzero if access to memory by bytes is slow and undesirable.  */
        !           845: #define SLOW_BYTE_ACCESS 0
        !           846: 
        !           847: /* Define if shifts truncate the shift count
        !           848:    which implies one can omit a sign-extension or zero-extension
        !           849:    of a shift count.  */
        !           850: #define SHIFT_COUNT_TRUNCATED
        !           851: 
        !           852: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
        !           853:    is done just by pretending it is already truncated.  */
        !           854: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
        !           855: 
        !           856: /* We assume that the store-condition-codes instructions store 0 for false
        !           857:    and some other value for true.  This is the value stored for true.  */
        !           858: 
        !           859: #define STORE_FLAG_VALUE -1
        !           860: 
        !           861: /* Specify the machine mode that pointers have.
        !           862:    After generation of rtl, the compiler makes no further distinction
        !           863:    between pointers and any other objects of this machine mode.  */
        !           864: #define Pmode SImode
        !           865: 
        !           866: /* A function address in a call instruction
        !           867:    is a byte address (for indexing purposes)
        !           868:    so give the MEM rtx a byte's mode.  */
        !           869: #define FUNCTION_MODE QImode
        !           870: 
        !           871: /* Compute the cost of computing a constant rtl expression RTX
        !           872:    whose rtx-code is CODE.  The body of this macro is a portion
        !           873:    of a switch statement.  If the code is computed here,
        !           874:    return it with a return statement.  Otherwise, break from the switch.  */
        !           875: 
        !           876: #define CONST_COSTS(RTX,CODE) \
        !           877:   case CONST_INT:                                              \
        !           878:     /* Constant zero is super cheap due to clr instruction.  */        \
        !           879:     if (RTX == const0_rtx) return 0;                           \
        !           880:     if ((unsigned) INTVAL (RTX) < 077) return 1;               \
        !           881:   case CONST:                                                  \
        !           882:   case LABEL_REF:                                              \
        !           883:   case SYMBOL_REF:                                             \
        !           884:     return 3;                                                  \
        !           885:   case CONST_DOUBLE:                                           \
        !           886:     return 5;
        !           887: 
        !           888: /* Tell final.c how to eliminate redundant test instructions.  */
        !           889: 
        !           890: /* Here we define machine-dependent flags and fields in cc_status
        !           891:    (see `conditions.h').  */
        !           892: 
        !           893: /* Set if the cc value is actually in the 68881, so a floating point
        !           894:    conditional branch must be output.  */
        !           895: #define CC_IN_68881 040
        !           896: 
        !           897: /* Store in cc_status the expressions
        !           898:    that the condition codes will describe
        !           899:    after execution of an instruction whose pattern is EXP.
        !           900:    Do not alter them if the instruction would not alter the cc's.  */
        !           901: 
        !           902: /* On the 68000, all the insns to store in an address register
        !           903:    fail to set the cc's.  However, in some cases these instructions
        !           904:    can make it possibly invalid to use the saved cc's.  In those
        !           905:    cases we clear out some or all of the saved cc's so they won't be used.  */
        !           906: 
        !           907: #define NOTICE_UPDATE_CC(EXP) \
        !           908: { if (GET_CODE (EXP) == SET)                                   \
        !           909:     { if (ADDRESS_REG_P (XEXP (EXP, 0)))                       \
        !           910:        { if (cc_status.value1                                  \
        !           911:              && reg_mentioned_p (XEXP (EXP, 0), cc_status.value1)) \
        !           912:            cc_status.value1 = 0;                               \
        !           913:          if (cc_status.value2                                  \
        !           914:              && reg_mentioned_p (XEXP (EXP, 0), cc_status.value2)) \
        !           915:            cc_status.value2 = 0; }                             \
        !           916:       else if (!FP_REG_P (XEXP (EXP, 0))                       \
        !           917:               && XEXP (EXP, 0) != cc0_rtx                      \
        !           918:               && (FP_REG_P (XEXP (EXP, 1))                     \
        !           919:                   || GET_CODE (XEXP (EXP, 1)) == FIX           \
        !           920:                   || GET_CODE (XEXP (EXP, 1)) == FLOAT_TRUNCATE \
        !           921:                   || GET_CODE (XEXP (EXP, 1)) == FLOAT_EXTEND)) \
        !           922:        { CC_STATUS_INIT; }                                     \
        !           923:       else if (GET_CODE (SET_SRC (EXP)) == CALL)               \
        !           924:        { CC_STATUS_INIT; }                                     \
        !           925:       else if (XEXP (EXP, 0) != pc_rtx)                                \
        !           926:        { cc_status.flags = 0;                                  \
        !           927:          cc_status.value1 = XEXP (EXP, 0);                     \
        !           928:          cc_status.value2 = XEXP (EXP, 1); } }                 \
        !           929:   else if (GET_CODE (EXP) == PARALLEL                          \
        !           930:           && GET_CODE (XVECEXP (EXP, 0, 0)) == SET)            \
        !           931:     { if (ADDRESS_REG_P (XEXP (XVECEXP (EXP, 0, 0), 0)))       \
        !           932:        CC_STATUS_INIT;                                         \
        !           933:       else if (XEXP (XVECEXP (EXP, 0, 0), 0) != pc_rtx)                \
        !           934:        { cc_status.flags = 0;                                  \
        !           935:          cc_status.value1 = XEXP (XVECEXP (EXP, 0, 0), 0);     \
        !           936:          cc_status.value2 = XEXP (XVECEXP (EXP, 0, 0), 1); } } \
        !           937:   else CC_STATUS_INIT;                                         \
        !           938:   if (cc_status.value2 != 0                                    \
        !           939:       && ADDRESS_REG_P (cc_status.value2)                      \
        !           940:       && GET_MODE (cc_status.value2) == QImode)                        \
        !           941:     CC_STATUS_INIT;                                            \
        !           942:   if (cc_status.value2 != 0)                                   \
        !           943:     switch (GET_CODE (cc_status.value2))                       \
        !           944:       { case PLUS: case MINUS: case MULT: case UMULT:          \
        !           945:        case DIV: case UDIV: case MOD: case UMOD: case NEG:     \
        !           946:        case ASHIFT: case LSHIFT: case ASHIFTRT: case LSHIFTRT: \
        !           947:        case ROTATE: case ROTATERT:                             \
        !           948:          if (GET_MODE (cc_status.value2) != VOIDmode)          \
        !           949:            cc_status.flags |= CC_NO_OVERFLOW;                  \
        !           950:          break;                                                \
        !           951:        case ZERO_EXTEND:                                       \
        !           952:          /* (SET r1 (ZERO_EXTEND r2)) on this machine
        !           953:             ends with a move insn moving r2 in r2's mode.
        !           954:             Thus, the cc's are set for r2.
        !           955:             This can set N bit spuriously. */                  \
        !           956:          cc_status.flags |= CC_NOT_NEGATIVE; }                 \
        !           957:   if (cc_status.value1 && GET_CODE (cc_status.value1) == REG   \
        !           958:       && cc_status.value2                                      \
        !           959:       && reg_mentioned_p (cc_status.value1, cc_status.value2)) \
        !           960:     cc_status.value2 = 0;                                      \
        !           961:   if ((cc_status.value1 && FP_REG_P (cc_status.value1))                \
        !           962:       || (cc_status.value2 && FP_REG_P (cc_status.value2)))    \
        !           963:     cc_status.flags = CC_IN_68881; }
        !           964: 
        !           965: #define OUTPUT_JUMP(NORMAL, FLOAT, NO_OV)  \
        !           966: { if (cc_prev_status.flags & CC_IN_68881)                      \
        !           967:     return FLOAT;                                              \
        !           968:   if (cc_prev_status.flags & CC_NO_OVERFLOW)                   \
        !           969:     return NO_OV;                                              \
        !           970:   return NORMAL; }
        !           971: 
        !           972: /* Control the assembler format that we output.  */
        !           973: 
        !           974: /* Output at beginning of assembler file.  */
        !           975: 
        !           976: #define ASM_FILE_START "#NO_APP\n"
        !           977: 
        !           978: /* Output to assembler file text saying following lines
        !           979:    may contain character constants, extra white space, comments, etc.  */
        !           980: 
        !           981: #define ASM_APP_ON "#APP\n"
        !           982: 
        !           983: /* Output to assembler file text saying following lines
        !           984:    no longer contain unusual constructs.  */
        !           985: 
        !           986: #define ASM_APP_OFF "#NO_APP\n"
        !           987: 
        !           988: /* Output before read-only data.  */
        !           989: 
        !           990: #define TEXT_SECTION_ASM_OP ".text"
        !           991: 
        !           992: /* Output before writable data.  */
        !           993: 
        !           994: #define DATA_SECTION_ASM_OP ".data"
        !           995: 
        !           996: /* How to refer to registers in assembler output.
        !           997:    This sequence is indexed by compiler's hard-register-number (see above).  */
        !           998: 
        !           999: #define REGISTER_NAMES \
        !          1000: {"d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",       \
        !          1001:  "a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp",       \
        !          1002:  "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7"}
        !          1003: 
        !          1004: /* How to renumber registers for dbx and gdb.
        !          1005:    On the Sun-3, the floating point registers have numbers
        !          1006:    18 to 25, not 16 to 23 as they do in the compiler.  */
        !          1007: 
        !          1008: #define DBX_REGISTER_NUMBER(REGNO) ((REGNO) < 16 ? (REGNO) : (REGNO) + 2)
        !          1009: 
        !          1010: /* This is how to output the definition of a user-level label named NAME,
        !          1011:    such as the label on a static function or variable NAME.  */
        !          1012: 
        !          1013: #define ASM_OUTPUT_LABEL(FILE,NAME)    \
        !          1014:   do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
        !          1015: 
        !          1016: /* This is how to output a command to make the user-level label named NAME
        !          1017:    defined for reference from other files.  */
        !          1018: 
        !          1019: #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
        !          1020:   do { fputs (".globl ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)
        !          1021: 
        !          1022: /* This is how to output a reference to a user-level label named NAME.
        !          1023:    `assemble_name' uses this.  */
        !          1024: 
        !          1025: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
        !          1026:   fprintf (FILE, "_%s", NAME)
        !          1027: 
        !          1028: /* This is how to output an internal numbered label where
        !          1029:    PREFIX is the class of label and NUM is the number within the class.  */
        !          1030: 
        !          1031: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)     \
        !          1032:   fprintf (FILE, "%s%d:\n", PREFIX, NUM)
        !          1033: 
        !          1034: /* This is how to store into the string LABEL
        !          1035:    the symbol_ref name of an internal numbered label where
        !          1036:    PREFIX is the class of label and NUM is the number within the class.
        !          1037:    This is suitable for output with `assemble_name'.  */
        !          1038: 
        !          1039: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)  \
        !          1040:   sprintf (LABEL, "*%s%d", PREFIX, NUM)
        !          1041: 
        !          1042: /* This is how to output an assembler line defining a `double' constant.  */
        !          1043: 
        !          1044: #define ASM_OUTPUT_DOUBLE(FILE,VALUE)  \
        !          1045:   fprintf (FILE, "\t.double 0r%.20g\n", (VALUE))
        !          1046: 
        !          1047: /* This is how to output an assembler line defining a `float' constant.  */
        !          1048: 
        !          1049: #define ASM_OUTPUT_FLOAT(FILE,VALUE)  \
        !          1050: do { union { float f; long l;} tem;                    \
        !          1051:      tem.f = (VALUE);                                  \
        !          1052:      fprintf (FILE, "\t.long 0x%x\n", tem.l);  \
        !          1053:    } while (0)
        !          1054: 
        !          1055: /* This is how to output an assembler line defining an `int' constant.  */
        !          1056: 
        !          1057: #define ASM_OUTPUT_INT(FILE,VALUE)  \
        !          1058: ( fprintf (FILE, "\t.long "),                  \
        !          1059:   output_addr_const (FILE, (VALUE)),           \
        !          1060:   fprintf (FILE, "\n"))
        !          1061: 
        !          1062: /* Likewise for `char' and `short' constants.  */
        !          1063: 
        !          1064: #define ASM_OUTPUT_SHORT(FILE,VALUE)  \
        !          1065: ( fprintf (FILE, "\t.word "),                  \
        !          1066:   output_addr_const (FILE, (VALUE)),           \
        !          1067:   fprintf (FILE, "\n"))
        !          1068: 
        !          1069: #define ASM_OUTPUT_CHAR(FILE,VALUE)  \
        !          1070: ( fprintf (FILE, "\t.byte "),                  \
        !          1071:   output_addr_const (FILE, (VALUE)),           \
        !          1072:   fprintf (FILE, "\n"))
        !          1073: 
        !          1074: /* This is how to output an assembler line for a numeric constant byte.  */
        !          1075: 
        !          1076: #define ASM_OUTPUT_BYTE(FILE,VALUE)  \
        !          1077:   fprintf (FILE, "\t.byte 0x%x\n", (VALUE))
        !          1078: 
        !          1079: /* This is how to output an element of a case-vector that is absolute.
        !          1080:    (The 68000 does not use such vectors,
        !          1081:    but we must define this macro anyway.)  */
        !          1082: 
        !          1083: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
        !          1084:   fprintf (FILE, "\t.long L%d\n", VALUE)
        !          1085: 
        !          1086: /* This is how to output an element of a case-vector that is relative.  */
        !          1087: 
        !          1088: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)  \
        !          1089:   fprintf (FILE, "\t.word L%d-L%d\n", VALUE, REL)
        !          1090: 
        !          1091: /* This is how to output an assembler line
        !          1092:    that says to advance the location counter
        !          1093:    to a multiple of 2**LOG bytes.  */
        !          1094: 
        !          1095: #define ASM_OUTPUT_ALIGN(FILE,LOG)     \
        !          1096:   if ((LOG) == 1)                      \
        !          1097:     fprintf (FILE, "\t.even\n");       \
        !          1098:   else if ((LOG) != 0)                 \
        !          1099:     abort ();
        !          1100: 
        !          1101: #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
        !          1102:   fprintf (FILE, "\t.skip %d\n", (SIZE))
        !          1103: 
        !          1104: /* This says how to output an assembler line
        !          1105:    to define a global common symbol.  */
        !          1106: 
        !          1107: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE)  \
        !          1108: ( fputs (".comm ", (FILE)),                    \
        !          1109:   assemble_name ((FILE), (NAME)),              \
        !          1110:   fprintf ((FILE), ",%d\n", (SIZE)))
        !          1111: 
        !          1112: /* This says how to output an assembler line
        !          1113:    to define a local common symbol.  */
        !          1114: 
        !          1115: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE)  \
        !          1116: ( fputs (".lcomm ", (FILE)),                   \
        !          1117:   assemble_name ((FILE), (NAME)),              \
        !          1118:   fprintf ((FILE), ",%d\n", (SIZE)))
        !          1119: 
        !          1120: /* Store in OUTPUT a string (made with alloca) containing
        !          1121:    an assembler-name for a local static variable named NAME.
        !          1122:    LABELNO is an integer which is different for each call.  */
        !          1123: 
        !          1124: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
        !          1125: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10),   \
        !          1126:   sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
        !          1127: 
        !          1128: /* Define the parentheses used to group arithmetic operations
        !          1129:    in assembler code.  */
        !          1130: 
        !          1131: #define ASM_OPEN_PAREN "("
        !          1132: #define ASM_CLOSE_PAREN ")"
        !          1133: 
        !          1134: /* Define results of standard character escape sequences.  */
        !          1135: #define TARGET_BELL 007
        !          1136: #define TARGET_BS 010
        !          1137: #define TARGET_TAB 011
        !          1138: #define TARGET_NEWLINE 012
        !          1139: #define TARGET_VT 013
        !          1140: #define TARGET_FF 014
        !          1141: #define TARGET_CR 015
        !          1142: 
        !          1143: /* Print operand X (an rtx) in assembler syntax to file FILE.
        !          1144:    CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
        !          1145:    For `%' followed by punctuation, CODE is the punctuation and X is null.
        !          1146: 
        !          1147:    On the 68000, we use several CODE characters:
        !          1148:    'f' for float insn (print a CONST_DOUBLE as a float rather than in hex)
        !          1149:    'b' for byte insn (no effect, on the Sun; this is for the ISI).
        !          1150:    '.' for dot needed in Motorola-style opcode names.
        !          1151:    '-' for an operand pushing on the stack:
        !          1152:        sp@-, -(sp) or -(%sp) depending on the style of syntax.
        !          1153:    '+' for an operand pushing on the stack:
        !          1154:        sp@+, (sp)+ or (%sp)+ depending on the style of syntax.
        !          1155:    's' for a reference to the top word on the stack:
        !          1156:        sp@, (sp) or (%sp) depending on the style of syntax.
        !          1157:    '#' for an immediate operand prefix (# in MIT and Motorola syntax
        !          1158:        but & in SGS syntax).
        !          1159:    '!' for the cc register (used in an `and to cc' insn).  */
        !          1160: 
        !          1161: #define PRINT_OPERAND(FILE, X, CODE)  \
        !          1162: { if (CODE == '.') ;                                                   \
        !          1163:   else if (CODE == '#') fprintf (FILE, "#");                           \
        !          1164:   else if (CODE == '-') fprintf (FILE, "sp@-");                                \
        !          1165:   else if (CODE == '+') fprintf (FILE, "sp@+");                                \
        !          1166:   else if (CODE == 's') fprintf (FILE, "sp@");                         \
        !          1167:   else if (CODE == '!') fprintf (FILE, "cc");                          \
        !          1168:   else if (GET_CODE (X) == REG)                                                \
        !          1169:     fprintf (FILE, "%s", reg_name [REGNO (X)]);                                \
        !          1170:   else if (GET_CODE (X) == MEM)                                                \
        !          1171:     output_address (XEXP (X, 0));                                      \
        !          1172:   else if (GET_CODE (X) == CONST_DOUBLE && GET_MODE (X) == SFmode)     \
        !          1173:     { union { double d; int i[2]; } u;                                 \
        !          1174:       union { float f; int i; } u1;                                    \
        !          1175:       u.i[0] = XINT (X, 0); u.i[1] = XINT (X, 1);                      \
        !          1176:       u1.f = u.d;                                                      \
        !          1177:       if (CODE == 'f')                                                 \
        !          1178:         fprintf (FILE, "#0r%.9g", u1.f);                               \
        !          1179:       else                                                             \
        !          1180:         fprintf (FILE, "#0x%x", u1.i); }                               \
        !          1181:   else if (GET_CODE (X) == CONST_DOUBLE)                               \
        !          1182:     { union { double d; int i[2]; } u;                                 \
        !          1183:       u.i[0] = XINT (X, 0); u.i[1] = XINT (X, 1);                      \
        !          1184:       fprintf (FILE, "#0r%.20g", u.d); }                               \
        !          1185:   else { putc ('#', FILE); output_addr_const (FILE, X); }}
        !          1186: 
        !          1187: /* Note that this contains a kludge that knows that the only reason
        !          1188:    we have an address (plus (label_ref...) (reg...))
        !          1189:    is in the insn before a tablejump, and we know that m68k.md
        !          1190:    generates a label LInnn: on such an insn.  */
        !          1191: #define PRINT_OPERAND_ADDRESS(FILE, ADDR)  \
        !          1192: { register rtx reg1, reg2, breg, ireg;                                 \
        !          1193:   register rtx addr = ADDR;                                            \
        !          1194:   rtx offset;                                                          \
        !          1195:   switch (GET_CODE (addr))                                             \
        !          1196:     {                                                                  \
        !          1197:     case REG:                                                          \
        !          1198:       fprintf (FILE, "%s@", reg_name [REGNO (addr)]);                  \
        !          1199:       break;                                                           \
        !          1200:     case PRE_DEC:                                                      \
        !          1201:       fprintf (FILE, "%s@-", reg_name [REGNO (XEXP (addr, 0))]);       \
        !          1202:       break;                                                           \
        !          1203:     case POST_INC:                                                     \
        !          1204:       fprintf (FILE, "%s@+", reg_name [REGNO (XEXP (addr, 0))]);       \
        !          1205:       break;                                                           \
        !          1206:     case PLUS:                                                         \
        !          1207:       reg1 = 0;        reg2 = 0;                                               \
        !          1208:       ireg = 0;        breg = 0;                                               \
        !          1209:       offset = 0;                                                      \
        !          1210:       if (CONSTANT_ADDRESS_P (XEXP (addr, 0)))                         \
        !          1211:        {                                                               \
        !          1212:          offset = XEXP (addr, 0);                                      \
        !          1213:          addr = XEXP (addr, 1);                                        \
        !          1214:        }                                                               \
        !          1215:       else if (CONSTANT_ADDRESS_P (XEXP (addr, 1)))                    \
        !          1216:        {                                                               \
        !          1217:          offset = XEXP (addr, 1);                                      \
        !          1218:          addr = XEXP (addr, 0);                                        \
        !          1219:        }                                                               \
        !          1220:       if (GET_CODE (addr) != PLUS) ;                                   \
        !          1221:       else if (GET_CODE (XEXP (addr, 0)) == SIGN_EXTEND)               \
        !          1222:        {                                                               \
        !          1223:          reg1 = XEXP (addr, 0);                                        \
        !          1224:          addr = XEXP (addr, 1);                                        \
        !          1225:        }                                                               \
        !          1226:       else if (GET_CODE (XEXP (addr, 1)) == SIGN_EXTEND)               \
        !          1227:        {                                                               \
        !          1228:          reg1 = XEXP (addr, 1);                                        \
        !          1229:          addr = XEXP (addr, 0);                                        \
        !          1230:        }                                                               \
        !          1231:       else if (GET_CODE (XEXP (addr, 0)) == MULT)                      \
        !          1232:        {                                                               \
        !          1233:          reg1 = XEXP (addr, 0);                                        \
        !          1234:          addr = XEXP (addr, 1);                                        \
        !          1235:        }                                                               \
        !          1236:       else if (GET_CODE (XEXP (addr, 1)) == MULT)                      \
        !          1237:        {                                                               \
        !          1238:          reg1 = XEXP (addr, 1);                                        \
        !          1239:          addr = XEXP (addr, 0);                                        \
        !          1240:        }                                                               \
        !          1241:       else if (GET_CODE (XEXP (addr, 0)) == REG)                       \
        !          1242:        {                                                               \
        !          1243:          reg1 = XEXP (addr, 0);                                        \
        !          1244:          addr = XEXP (addr, 1);                                        \
        !          1245:        }                                                               \
        !          1246:       else if (GET_CODE (XEXP (addr, 1)) == REG)                       \
        !          1247:        {                                                               \
        !          1248:          reg1 = XEXP (addr, 1);                                        \
        !          1249:          addr = XEXP (addr, 0);                                        \
        !          1250:        }                                                               \
        !          1251:       if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT            \
        !          1252:          || GET_CODE (addr) == SIGN_EXTEND)                            \
        !          1253:        { if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; }     \
        !          1254: /*  for OLD_INDEXING                                                   \
        !          1255:       else if (GET_CODE (addr) == PLUS)                                        \
        !          1256:        {                                                               \
        !          1257:          if (GET_CODE (XEXP (addr, 0)) == REG)                         \
        !          1258:            {                                                           \
        !          1259:              reg2 = XEXP (addr, 0);                                    \
        !          1260:              addr = XEXP (addr, 1);                                    \
        !          1261:            }                                                           \
        !          1262:          else if (GET_CODE (XEXP (addr, 1)) == REG)                    \
        !          1263:            {                                                           \
        !          1264:              reg2 = XEXP (addr, 1);                                    \
        !          1265:              addr = XEXP (addr, 0);                                    \
        !          1266:            }                                                           \
        !          1267:        }                                                               \
        !          1268:   */                                                                   \
        !          1269:       if (offset != 0) { if (addr != 0) abort (); addr = offset; }     \
        !          1270:       if ((reg1 && (GET_CODE (reg1) == SIGN_EXTEND                     \
        !          1271:                    || GET_CODE (reg1) == MULT))                        \
        !          1272:          || (reg2 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg2))))         \
        !          1273:        { breg = reg2; ireg = reg1; }                                   \
        !          1274:       else if (reg1 != 0 && REGNO_OK_FOR_BASE_P (REGNO (reg1)))                \
        !          1275:        { breg = reg1; ireg = reg2; }                                   \
        !          1276:       if (ireg != 0 && breg == 0 && GET_CODE (addr) == LABEL_REF)      \
        !          1277:         { int scale = 1;                                               \
        !          1278:          if (GET_CODE (ireg) == MULT)                                  \
        !          1279:            { scale = INTVAL (XEXP (ireg, 1));                          \
        !          1280:              ireg = XEXP (ireg, 0); }                                  \
        !          1281:          if (GET_CODE (ireg) == SIGN_EXTEND)                           \
        !          1282:            fprintf (FILE, "pc@(L%d-LI%d-2:b,%s:w",                     \
        !          1283:                     CODE_LABEL_NUMBER (XEXP (addr, 0)),                \
        !          1284:                     CODE_LABEL_NUMBER (XEXP (addr, 0)),                \
        !          1285:                     reg_name[REGNO (XEXP (ireg, 0))]);                 \
        !          1286:          else                                                          \
        !          1287:            fprintf (FILE, "pc@(L%d-LI%d-2:b,%s:l",                     \
        !          1288:                     CODE_LABEL_NUMBER (XEXP (addr, 0)),                \
        !          1289:                     CODE_LABEL_NUMBER (XEXP (addr, 0)),                \
        !          1290:                     reg_name[REGNO (ireg)]);                           \
        !          1291:          if (scale != 1) fprintf (FILE, ":%d", scale);                 \
        !          1292:          putc (')', FILE);                                             \
        !          1293:          break; }                                                      \
        !          1294:       if (ireg != 0 || breg != 0)                                      \
        !          1295:        { int scale = 1;                                                \
        !          1296:          if (breg == 0)                                                \
        !          1297:            abort ();                                                   \
        !          1298:          fprintf (FILE, "%s@(", reg_name[REGNO (breg)]);               \
        !          1299:          if (addr != 0)                                                \
        !          1300:            output_addr_const (FILE, addr);                             \
        !          1301:          if (addr != 0 && ireg != 0)                                   \
        !          1302:            putc (',', FILE);                                           \
        !          1303:          if (ireg != 0 && GET_CODE (ireg) == MULT)                     \
        !          1304:            { scale = INTVAL (XEXP (ireg, 1));                          \
        !          1305:              ireg = XEXP (ireg, 0); }                                  \
        !          1306:          if (ireg != 0 && GET_CODE (ireg) == SIGN_EXTEND)              \
        !          1307:            fprintf (FILE, "%s:w", reg_name[REGNO (XEXP (ireg, 0))]);   \
        !          1308:          else if (ireg != 0)                                           \
        !          1309:            fprintf (FILE, "%s:l", reg_name[REGNO (ireg)]);             \
        !          1310:          if (scale != 1) fprintf (FILE, ":%d", scale);                 \
        !          1311:          putc (')', FILE);                                             \
        !          1312:          break;                                                        \
        !          1313:        }                                                               \
        !          1314:       else if (reg1 != 0 && GET_CODE (addr) == LABEL_REF)              \
        !          1315:        { fprintf (FILE, "pc@(L%d-LI%d-2:b,%s:l)",                      \
        !          1316:                   CODE_LABEL_NUMBER (XEXP (addr, 0)),                  \
        !          1317:                   CODE_LABEL_NUMBER (XEXP (addr, 0)),                  \
        !          1318:                   reg_name[REGNO (reg1)]);                             \
        !          1319:          break; }                                                      \
        !          1320:     default:                                                           \
        !          1321:       if (GET_CODE (addr) == CONST_INT                                 \
        !          1322:          && INTVAL (addr) < 0x8000                                     \
        !          1323:          && INTVAL (addr) >= -0x8000)                                  \
        !          1324:        fprintf (FILE, "%d:w", INTVAL (addr));                          \
        !          1325:       else                                                             \
        !          1326:         output_addr_const (FILE, addr);                                        \
        !          1327:     }}
        !          1328: 
        !          1329: /*
        !          1330: Local variables:
        !          1331: version-control: t
        !          1332: End:
        !          1333: */

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