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

1.1     ! root        1: /* Definitions of target machine for GNU compiler, for SPUR chip.
        !             2:    Copyright (C) 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: #define CPP_PREDEFINES "-Dspur"
        !            29: 
        !            30: /* Print subsidiary information on the compiler version in use.  */
        !            31: #define TARGET_VERSION ;
        !            32: 
        !            33: /* Run-time compilation parameters selecting different hardware subsets.
        !            34: 
        !            35:    On the SPUR, we don't yet need any.  */
        !            36: 
        !            37: extern int target_flags;
        !            38: 
        !            39: /* Nonzero if we should generate code to use the fpu.  */
        !            40: #define TARGET_FPU (target_flags & 1)
        !            41: 
        !            42: /* Macro to define tables used to set the flags.
        !            43:    This is a list in braces of pairs in braces,
        !            44:    each pair being { "NAME", VALUE }
        !            45:    where VALUE is the bits to set or minus the bits to clear.
        !            46:    An empty string NAME is used to identify the default VALUE.  */
        !            47: 
        !            48: #define TARGET_SWITCHES  \
        !            49:   { {"fpu", 1},                        \
        !            50:     {"soft-float", -1},                \
        !            51:     { "", TARGET_DEFAULT}}
        !            52: 
        !            53: #define TARGET_DEFAULT 0
        !            54: 
        !            55: /* target machine storage layout */
        !            56: 
        !            57: /* Define this if most significant bit is lowest numbered
        !            58:    in instructions that operate on numbered bit-fields.
        !            59:    This is a moot question on the SPUR due to the lack of bit-field insns.  */
        !            60: /* #define BITS_BIG_ENDIAN */
        !            61: 
        !            62: /* Define this if most significant byte of a word is the lowest numbered.  */
        !            63: /* That is not true on SPUR.  */
        !            64: /* #define BYTES_BIG_ENDIAN */
        !            65: 
        !            66: /* Define this if most significant word of a multiword number is numbered.  */
        !            67: /* For SPUR we can decide arbitrarily
        !            68:    since there are no machine instructions for them.  */
        !            69: /* #define WORDS_BIG_ENDIAN */
        !            70: 
        !            71: /* number of bits in an addressible storage unit */
        !            72: #define BITS_PER_UNIT 8
        !            73: 
        !            74: /* Width in bits of a "word", which is the contents of a machine register.
        !            75:    Note that this is not necessarily the width of data type `int';
        !            76:    if using 16-bit ints on a 68000, this would still be 32.
        !            77:    But on a machine with 16-bit registers, this would be 16.  */
        !            78: #define BITS_PER_WORD 32
        !            79: 
        !            80: /* Width of a word, in units (bytes).  */
        !            81: #define UNITS_PER_WORD 4
        !            82: 
        !            83: /* Width in bits of a pointer.
        !            84:    See also the macro `Pmode' defined below.  */
        !            85: #define POINTER_SIZE 32
        !            86: 
        !            87: /* Allocation boundary (in *bits*) for storing pointers in memory.  */
        !            88: #define POINTER_BOUNDARY 32
        !            89: 
        !            90: /* Allocation boundary (in *bits*) for storing arguments in argument list.  */
        !            91: #define PARM_BOUNDARY 64
        !            92: 
        !            93: /* Boundary (in *bits*) on which stack pointer should be aligned.  */
        !            94: #define STACK_BOUNDARY 64
        !            95: 
        !            96: /* Allocation boundary (in *bits*) for the code of a function.  */
        !            97: #define FUNCTION_BOUNDARY 32
        !            98: 
        !            99: /* Alignment of field after `int : 0' in a structure.  */
        !           100: #define EMPTY_FIELD_BOUNDARY 32
        !           101: 
        !           102: /* Every structure's size must be a multiple of this.  */
        !           103: #define STRUCTURE_SIZE_BOUNDARY 32
        !           104: 
        !           105: /* No data type wants to be aligned rounder than this.  */
        !           106: #define BIGGEST_ALIGNMENT 64
        !           107: 
        !           108: /* Define this if move instructions will actually fail to work
        !           109:    when given unaligned data.  */
        !           110: #define STRICT_ALIGNMENT
        !           111: 
        !           112: /* Standard register usage.  */
        !           113: 
        !           114: /* Number of actual hardware registers.
        !           115:    The hardware registers are assigned numbers for the compiler
        !           116:    from 0 to just below FIRST_PSEUDO_REGISTER.
        !           117:    All registers that the compiler knows about must be given numbers,
        !           118:    even those that are not normally considered general registers.
        !           119: 
        !           120:    SPUR has 32 fullword registers and 15 floating point registers.  */
        !           121: 
        !           122: #define FIRST_PSEUDO_REGISTER 47
        !           123: 
        !           124: /* 1 for registers that have pervasive standard uses
        !           125:    and are not available for the register allocator.
        !           126:    On SPUR, this includes all the global registers
        !           127:    and the callee return address register.  */
        !           128: #define FIXED_REGISTERS  \
        !           129:  {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
        !           130:   1, 0, 0, 0, 0, 0,            \
        !           131:   0, 0, 0, 0, 0, 0, 0, 0, 1, 1,        \
        !           132:   1, 0, 0, 0, 0, 0,            \
        !           133:   1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}
        !           134: 
        !           135: /* 1 for registers not available across function calls.
        !           136:    These must include the FIXED_REGISTERS and also any
        !           137:    registers that can be used without being saved.
        !           138:    The latter must include the registers where values are returned
        !           139:    and the register where structure-value addresses are passed.
        !           140:    Aside from that, you can include as many other registers as you like.  */
        !           141: #define CALL_USED_REGISTERS  \
        !           142:  {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, \
        !           143:   1, 0, 0, 0, 0, 0,            \
        !           144:   0, 0, 0, 0, 0, 0, 0, 0, 1, 1,        \
        !           145:   1, 1, 1, 1, 1, 1,            \
        !           146:   1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0}
        !           147: 
        !           148: /* Return number of consecutive hard regs needed starting at reg REGNO
        !           149:    to hold something of mode MODE.
        !           150:    This is ordinarily the length in words of a value of mode MODE
        !           151:    but can be less for certain modes in special long registers.
        !           152: 
        !           153:    On SPUR, ordinary registers hold 32 bits worth;
        !           154:    a single floating point register is always enough for
        !           155:    anything that can be stored in them at all.  */
        !           156: #define HARD_REGNO_NREGS(REGNO, MODE)   \
        !           157:   ((REGNO) >= 32 ? 1                           \
        !           158:    : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           159: 
        !           160: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
        !           161:    On SPUR, the cpu registers can hold any mode but the float registers
        !           162:    can hold only SFmode or DFmode.  And they can't hold anything if use
        !           163:    of hardware floating point is disabled.  */
        !           164: #define HARD_REGNO_MODE_OK(REGNO, MODE) \
        !           165:   (((REGNO) < 32 && (GET_MODE_SIZE (MODE) <= 4 || (REGNO) < 31))       \
        !           166:    || (TARGET_FPU && ((MODE) == SFmode || (MODE) == DFmode)))
        !           167: 
        !           168: /* Value is 1 if it is a good idea to tie two pseudo registers
        !           169:    when one has mode MODE1 and one has mode MODE2.
        !           170:    If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
        !           171:    for any hard reg, then this must be 0 for correct output.  */
        !           172: #define MODES_TIEABLE_P(MODE1, MODE2) \
        !           173:   (((MODE1) == SFmode || (MODE1) == DFmode) \
        !           174:    == ((MODE2) == SFmode || (MODE2) == DFmode))
        !           175: 
        !           176: /* Specify the registers used for certain standard purposes.
        !           177:    The values of these macros are register numbers.  */
        !           178: 
        !           179: /* SPUR pc isn't overloaded on a register that the compiler knows about.  */
        !           180: /* #define PC_REGNUM  */
        !           181: 
        !           182: /* Register to use for pushing function arguments.  */
        !           183: #define STACK_POINTER_REGNUM 4
        !           184: 
        !           185: /* Base register for access to local variables of the function.  */
        !           186: #define FRAME_POINTER_REGNUM 25
        !           187: 
        !           188: /* Value should be nonzero if functions must have frame pointers.
        !           189:    Zero means the frame pointer need not be set up (and parms
        !           190:    may be accessed via the stack pointer) in functions that seem suitable.
        !           191:    This is computed in `reload', in reload1.c.  */
        !           192: #define FRAME_POINTER_REQUIRED 1
        !           193: 
        !           194: /* Base register for access to arguments of the function.  */
        !           195: #define ARG_POINTER_REGNUM 25
        !           196: 
        !           197: /* Register in which static-chain is passed to a function.  */
        !           198: /* ??? */
        !           199: #define STATIC_CHAIN_REGNUM 8
        !           200: 
        !           201: /* Register in which address to store a structure value
        !           202:    is passed to a function.  */
        !           203: #define STRUCT_VALUE_REGNUM 27
        !           204: #define STRUCT_VALUE_INCOMING_REGNUM 11
        !           205: 
        !           206: /* Define the classes of registers for register constraints in the
        !           207:    machine description.  Also define ranges of constants.
        !           208: 
        !           209:    One of the classes must always be named ALL_REGS and include all hard regs.
        !           210:    If there is more than one class, another class must be named NO_REGS
        !           211:    and contain no registers.
        !           212: 
        !           213:    The name GENERAL_REGS must be the name of a class (or an alias for
        !           214:    another name such as ALL_REGS).  This is the class of registers
        !           215:    that is allowed by "g" or "r" in a register constraint.
        !           216:    Also, registers outside this class are allocated only when
        !           217:    instructions express preferences for them.
        !           218: 
        !           219:    The classes must be numbered in nondecreasing order; that is,
        !           220:    a larger-numbered class must never be contained completely
        !           221:    in a smaller-numbered class.
        !           222: 
        !           223:    For any two classes, it is very desirable that there be another
        !           224:    class that represents their union.  */
        !           225:    
        !           226: /* The 68000 has two kinds of registers, hence four classes.  */
        !           227: 
        !           228: enum reg_class { NO_REGS, GENERAL_REGS, FP_REGS, ALL_REGS, LIM_REG_CLASSES };
        !           229: 
        !           230: #define N_REG_CLASSES (int) LIM_REG_CLASSES
        !           231: 
        !           232: /* Give names of register classes as strings for dump file.   */
        !           233: 
        !           234: #define REG_CLASS_NAMES \
        !           235:  {"NO_REGS", "GENERAL_REGS", "FP_REGS", "ALL_REGS" }
        !           236: 
        !           237: /* Define which registers fit in which classes.
        !           238:    This is an initializer for a vector of HARD_REG_SET
        !           239:    of length N_REG_CLASSES.  */
        !           240: 
        !           241: #define REG_CLASS_CONTENTS {{0, 0}, {-1, 0}, {0, 0x7fff}, {-1, 0x7fff}}
        !           242: 
        !           243: /* The same information, inverted:
        !           244:    Return the class number of the smallest class containing
        !           245:    reg number REGNO.  This could be a conditional expression
        !           246:    or could index an array.  */
        !           247: 
        !           248: #define REGNO_REG_CLASS(REGNO) \
        !           249:  ((REGNO) >= 32 ? FP_REGS : GENERAL_REGS)
        !           250: 
        !           251: /* The class value for index registers, and the one for base regs.  */
        !           252: #define INDEX_REG_CLASS GENERAL_REGS
        !           253: #define BASE_REG_CLASS GENERAL_REGS
        !           254: 
        !           255: /* Get reg_class from a letter such as appears in the machine description.  */
        !           256: 
        !           257: #define REG_CLASS_FROM_LETTER(C) \
        !           258:   ((C) == 'f' ? FP_REGS : NO_REGS)
        !           259: 
        !           260: /* The letters I, J, K, L and M in a register constraint string
        !           261:    can be used to stand for particular ranges of immediate operands.
        !           262:    This macro defines what the ranges are.
        !           263:    C is the letter, and VALUE is a constant value.
        !           264:    Return 1 if VALUE is in the range specified by C.
        !           265: 
        !           266:    For SPUR, `I' is used for the range of constants an insn
        !           267:    can actually contain.
        !           268:    `J' is used for the range which is just zero (since that is R0).
        !           269:    `K' is used for the 5-bit operand of a compare insns.  */
        !           270: 
        !           271: #define CONST_OK_FOR_LETTER_P(VALUE, C)  \
        !           272:   ((C) == 'I' ? (unsigned) ((VALUE) + 0x2000) < 0x4000 \
        !           273:    : (C) == 'J' ? (VALUE) == 0                         \
        !           274:    : (C) == 'K' ? (unsigned) (VALUE) < 0x20            \
        !           275:    : 0)
        !           276: 
        !           277: /* Similar, but for floating constants, and defining letters G and H.
        !           278:    Here VALUE is the CONST_DOUBLE rtx itself.  */
        !           279: 
        !           280: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C)  \
        !           281:   ((C) == 'G' && XINT (VALUE, 0) == 0 && XINT (VALUE, 1) == 0)
        !           282: 
        !           283: /* Given an rtx X being reloaded into a reg required to be
        !           284:    in class CLASS, return the class of reg to actually use.
        !           285:    In general this is just CLASS; but on some machines
        !           286:    in some cases it is preferable to use a more restrictive class.  */
        !           287: #define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS)
        !           288: 
        !           289: /* Return the maximum number of consecutive registers
        !           290:    needed to represent mode MODE in a register of class CLASS.  */
        !           291: /* On SPUR, this is the size of MODE in words,
        !           292:    except in the FP regs, where a single reg is always enough.  */
        !           293: #define CLASS_MAX_NREGS(CLASS, MODE)   \
        !           294:  ((CLASS) == FP_REGS ? 1                       \
        !           295:   : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           296: 
        !           297: /* Stack layout; function entry, exit and calling.  */
        !           298: 
        !           299: /* Define this if pushing a word on the stack
        !           300:    makes the stack pointer a smaller address.  */
        !           301: #define STACK_GROWS_DOWNWARD
        !           302: 
        !           303: /* Define this if the nominal address of the stack frame
        !           304:    is at the high-address end of the local variables;
        !           305:    that is, each additional local variable allocated
        !           306:    goes at a more negative offset in the frame.  */
        !           307: #define FRAME_GROWS_DOWNWARD
        !           308: 
        !           309: /* Offset within stack frame to start allocating local variables at.
        !           310:    If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
        !           311:    first local allocated.  Otherwise, it is the offset to the BEGINNING
        !           312:    of the first local allocated.  */
        !           313: #define STARTING_FRAME_OFFSET 0
        !           314: 
        !           315: /* If we generate an insn to push BYTES bytes,
        !           316:    this says how many the stack pointer really advances by.
        !           317:    On SPUR, don't define this because there are no push insns.  */
        !           318: /*  #define PUSH_ROUNDING(BYTES) */
        !           319: 
        !           320: /* Offset of first parameter from the argument pointer register value.  */
        !           321: #define FIRST_PARM_OFFSET 0
        !           322: 
        !           323: /* Value is 1 if returning from a function call automatically
        !           324:    pops the arguments described by the number-of-args field in the call.
        !           325:    FUNTYPE is the data type of the function (as a tree),
        !           326:    or for a library call it is an identifier node for the subroutine name.  */
        !           327: 
        !           328: #define RETURN_POPS_ARGS(FUNTYPE) 0
        !           329: 
        !           330: /* Define how to find the value returned by a function.
        !           331:    VALTYPE is the data type of the value (as a tree).
        !           332:    If the precise function being called is known, FUNC is its FUNCTION_DECL;
        !           333:    otherwise, FUNC is 0.  */
        !           334: 
        !           335: /* On SPUR the value is found in the second "output" register.  */
        !           336: 
        !           337: #define FUNCTION_VALUE(VALTYPE, FUNC)  \
        !           338:   gen_rtx (REG, TYPE_MODE (VALTYPE), 27)
        !           339: 
        !           340: /* But the called function leaves it in the second "input" register.  */
        !           341: 
        !           342: #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC)  \
        !           343:   gen_rtx (REG, TYPE_MODE (VALTYPE), 11)
        !           344: 
        !           345: /* Define how to find the value returned by a library function
        !           346:    assuming the value has mode MODE.  */
        !           347: 
        !           348: #define LIBCALL_VALUE(MODE)  gen_rtx (REG, MODE, 27)
        !           349: 
        !           350: /* 1 if N is a possible register number for a function value
        !           351:    as seen by the caller.
        !           352:    On SPUR, the first "output" reg is the only register thus used.  */
        !           353: 
        !           354: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 27)
        !           355: 
        !           356: /* 1 if N is a possible register number for function argument passing.
        !           357:    On SPUR, these are the "output" registers.  */
        !           358: 
        !           359: #define FUNCTION_ARG_REGNO_P(N) ((N) < 32 && (N) > 26)
        !           360: 
        !           361: /* Define a data type for recording info about an argument list
        !           362:    during the scan of that argument list.  This data type should
        !           363:    hold all necessary information about the function itself
        !           364:    and about the args processed so far, enough to enable macros
        !           365:    such as FUNCTION_ARG to determine where the next arg should go.
        !           366: 
        !           367:    On SPUR, this is a single integer, which is a number of words
        !           368:    of arguments scanned so far (including the invisible argument,
        !           369:    if any, which holds the structure-value-address).
        !           370:    Thus 5 or more means all following args should go on the stack.  */
        !           371: 
        !           372: #define CUMULATIVE_ARGS int
        !           373: 
        !           374: /* Initialize a variable CUM of type CUMULATIVE_ARGS
        !           375:    for a call to a function whose data type is FNTYPE.
        !           376:    For a library call, FNTYPE is 0.
        !           377: 
        !           378:    On SPUR, the offset normally starts at 0, but starts at 4 bytes
        !           379:    when the function gets a structure-value-address as an
        !           380:    invisible first argument.  */
        !           381: 
        !           382: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE)       \
        !           383:  ((CUM) = ((FNTYPE) != 0 && TYPE_MODE (TREE_TYPE (FNTYPE)) == BLKmode))
        !           384: 
        !           385: /* Update the data in CUM to advance over an argument
        !           386:    of mode MODE and data type TYPE.
        !           387:    (TYPE is null for libcalls where that information may not be available.)  */
        !           388: 
        !           389: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)   \
        !           390:  ((CUM) += ((MODE) != BLKmode                  \
        !           391:            ? (GET_MODE_SIZE (MODE) + 3) / 4    \
        !           392:            : (int_size_in_bytes (TYPE) + 3) / 4))
        !           393: 
        !           394: /* Determine where to put an argument to a function.
        !           395:    Value is zero to push the argument on the stack,
        !           396:    or a hard register in which to store the argument.
        !           397: 
        !           398:    MODE is the argument's machine mode.
        !           399:    TYPE is the data type of the argument (as a tree).
        !           400:     This is null for libcalls where that information may
        !           401:     not be available.
        !           402:    CUM is a variable of type CUMULATIVE_ARGS which gives info about
        !           403:     the preceding args and about the function being called.
        !           404:    NAMED is nonzero if this argument is a named parameter
        !           405:     (otherwise it is an extra parameter matching an ellipsis).  */
        !           406: 
        !           407: /* On SPUR the first five words of args are normally in registers
        !           408:    and the rest are pushed.  But any arg that won't entirely fit in regs
        !           409:    is pushed.  */
        !           410: 
        !           411: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED)           \
        !           412: (5 >= ((CUM)                                           \
        !           413:        + ((MODE) == BLKmode                            \
        !           414:          ? (int_size_in_bytes (TYPE) + 3) / 4          \
        !           415:          : (GET_MODE_SIZE (MODE) + 3) / 4))            \
        !           416:  ? gen_rtx (REG, (MODE), 27 + (CUM))                   \
        !           417:  : 0)
        !           418: 
        !           419: /* Define where a function finds its arguments.
        !           420:    This is different from FUNCTION_ARG because of register windows.  */
        !           421: 
        !           422: #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED)  \
        !           423: (5 >= ((CUM)                                           \
        !           424:        + ((MODE) == BLKmode                            \
        !           425:          ? (int_size_in_bytes (TYPE) + 3) / 4          \
        !           426:          : (GET_MODE_SIZE (MODE) + 3) / 4))            \
        !           427:  ? gen_rtx (REG, (MODE), 11 + (CUM))                   \
        !           428:  : 0)
        !           429: 
        !           430: /* For an arg passed partly in registers and partly in memory,
        !           431:    this is the number of registers used.
        !           432:    For args passed entirely in registers or entirely in memory, zero.  */
        !           433: 
        !           434: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0
        !           435: 
        !           436: /* This macro generates the assembly code for function entry.
        !           437:    FILE is a stdio stream to output the code to.
        !           438:    SIZE is an int: how many units of temporary storage to allocate.
        !           439:    Refer to the array `regs_ever_live' to determine which registers
        !           440:    to save; `regs_ever_live[I]' is nonzero if register number I
        !           441:    is ever used in the function.  This macro is responsible for
        !           442:    knowing which registers should not be saved even if used.  */
        !           443: 
        !           444: /* On spur, move-double insns between fpu and cpu need an 8-byte block
        !           445:    of memory.  If any fpu reg is used in the function, we allocate
        !           446:    such a block here, at the bottom of the frame, just in case it's needed.  */
        !           447: 
        !           448: #define FUNCTION_PROLOGUE(FILE, SIZE)                          \
        !           449: {                                                              \
        !           450:   static char *reg_names[] = REGISTER_NAMES;                   \
        !           451:   extern char call_used_regs[];                                        \
        !           452:   extern int current_function_pretend_args_size;               \
        !           453:   int fsize = ((SIZE) + 7) & ~7;                               \
        !           454:   int nregs, i, fp_used = 0;                                   \
        !           455:   for (i = 32, nregs = 0; i < FIRST_PSEUDO_REGISTER; i++)      \
        !           456:     {                                                          \
        !           457:       if (regs_ever_live[i] && ! call_used_regs[i])            \
        !           458:         nregs++;                                               \
        !           459:       if (regs_ever_live[i]) fp_used = 1;                      \
        !           460:     }                                                          \
        !           461:   if (fp_used) fsize += 8;                                     \
        !           462:   fprintf (FILE, "0:\trd_special r24,pc\n");                   \
        !           463:   fprintf (FILE, "\tadd_nt r25,r4,$%d\n",                      \
        !           464:           - current_function_pretend_args_size);               \
        !           465:   if (fsize + nregs != 0 || current_function_pretend_args_size > 0) \
        !           466:     fprintf (FILE, "\tadd_nt r4,r25,$%d\n", - fsize - nregs * 16); \
        !           467:   for (i = 32, nregs = 0; i < FIRST_PSEUDO_REGISTER; i++)      \
        !           468:     if (regs_ever_live[i] && ! call_used_regs[i])              \
        !           469:       {                                                                \
        !           470:         fprintf (FILE, "\tst_ext1 %s,r4,$%d\n",                        \
        !           471:                 reg_names[i], 8 * nregs++);                    \
        !           472:         fprintf (FILE, "\tst_ext2 %s,r4,$%d\n",                        \
        !           473:                 reg_names[i], 8 * nregs++);                    \
        !           474:       }                                                                \
        !           475: }
        !           476: 
        !           477: /* Output assembler code to FILE to increment profiler label # LABELNO
        !           478:    for profiling a function entry.  */
        !           479: 
        !           480: #define FUNCTION_PROFILER(FILE, LABELNO)  \
        !           481:    abort ();
        !           482: 
        !           483: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
        !           484:    the stack pointer does not matter.  The value is tested only in
        !           485:    functions that have frame pointers.
        !           486:    No definition is equivalent to always zero.  */
        !           487: 
        !           488: extern int may_call_alloca;
        !           489: extern int current_function_pretend_args_size;
        !           490: 
        !           491: #define EXIT_IGNORE_STACK      \
        !           492:  (get_frame_size () != 0       \
        !           493:   || may_call_alloca || current_function_pretend_args_size)
        !           494: 
        !           495: /* This macro generates the assembly code for function exit,
        !           496:    on machines that need it.  If FUNCTION_EPILOGUE is not defined
        !           497:    then individual return instructions are generated for each
        !           498:    return statement.  Args are same as for FUNCTION_PROLOGUE.
        !           499: 
        !           500:    The function epilogue should not depend on the current stack pointer!
        !           501:    It should use the frame pointer only.  This is mandatory because
        !           502:    of alloca; we also take advantage of it to omit stack adjustments
        !           503:    before returning.  */
        !           504: 
        !           505: #define FUNCTION_EPILOGUE(FILE, SIZE)                          \
        !           506: {                                                              \
        !           507:   static char *reg_names[] = REGISTER_NAMES;                   \
        !           508:   extern char call_used_regs[];                                        \
        !           509:   extern int may_call_alloca;                                  \
        !           510:   extern int current_function_pretend_args_size;               \
        !           511:   int fsize = ((SIZE) + 7) & ~7;                               \
        !           512:   int nregs, i, fp_used = 0;                                   \
        !           513:   for (i = 32, nregs = 0; i < FIRST_PSEUDO_REGISTER; i++)      \
        !           514:     {                                                          \
        !           515:       if (regs_ever_live[i] && ! call_used_regs[i])            \
        !           516:        nregs++;                                                \
        !           517:       if (regs_ever_live[i]) fp_used = 1;                      \
        !           518:     }                                                          \
        !           519:   if (fp_used) fsize += 8;                                     \
        !           520:   if (nregs != 0)                                              \
        !           521:     {                                                          \
        !           522:       fprintf (FILE, "\tadd_nt r4,r25,$%d\n", - fsize - nregs * 16); \
        !           523:       for (i = 32, nregs = 0; i < FIRST_PSEUDO_REGISTER; i++)  \
        !           524:         if (regs_ever_live[i] && ! call_used_regs[i])          \
        !           525:          {                                                     \
        !           526:             fprintf (FILE, "\tld_ext1 %s,r4,$%d\n\tnop\n",     \
        !           527:                     reg_names[i], 8 * nregs++);                \
        !           528:             fprintf (FILE, "\tld_ext2 %s,r4,$%d\n\tnop\n",     \
        !           529:                     reg_names[i], 8 * nregs++);                \
        !           530:          }                                                     \
        !           531:     }                                                          \
        !           532:   if (fsize != 0 || nregs != 0 || may_call_alloca              \
        !           533:       || current_function_pretend_args_size > 0)               \
        !           534:     fprintf (FILE, "\tadd_nt r4,r25,$%d\n",                    \
        !           535:             current_function_pretend_args_size);               \
        !           536:   fprintf (FILE, "\treturn r10,$8\n\tnop\n");                  \
        !           537: }
        !           538: 
        !           539: /* If the memory address ADDR is relative to the frame pointer,
        !           540:    correct it to be relative to the stack pointer instead.
        !           541:    This is for when we don't use a frame pointer.
        !           542:    ADDR should be a variable name.  */
        !           543: 
        !           544: #define FIX_FRAME_POINTER_ADDRESS(ADDR,DEPTH)  abort ();
        !           545: 
        !           546: /* Addressing modes, and classification of registers for them.  */
        !           547: 
        !           548: /* #define HAVE_POST_INCREMENT */
        !           549: /* #define HAVE_POST_DECREMENT */
        !           550: 
        !           551: /* #define HAVE_PRE_DECREMENT */
        !           552: /* #define HAVE_PRE_INCREMENT */
        !           553: 
        !           554: /* Macros to check register numbers against specific register classes.  */
        !           555: 
        !           556: /* These assume that REGNO is a hard or pseudo reg number.
        !           557:    They give nonzero only if REGNO is a hard reg of the suitable class
        !           558:    or a pseudo reg currently allocated to a suitable hard reg.
        !           559:    Since they use reg_renumber, they are safe only once reg_renumber
        !           560:    has been allocated, which happens in local-alloc.c.  */
        !           561: 
        !           562: #define REGNO_OK_FOR_INDEX_P(REGNO) \
        !           563: ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32)
        !           564: #define REGNO_OK_FOR_BASE_P(REGNO) \
        !           565: ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32)
        !           566: #define REGNO_OK_FOR_FP_P(REGNO) \
        !           567: (((REGNO) ^ 0x20) < 14 || (unsigned) (reg_renumber[REGNO] ^ 0x20) < 14)
        !           568: 
        !           569: /* Now macros that check whether X is a register and also,
        !           570:    strictly, whether it is in a specified class.
        !           571: 
        !           572:    These macros are specific to the SPUR, and may be used only
        !           573:    in code for printing assembler insns and in conditions for
        !           574:    define_optimization.  */
        !           575: 
        !           576: /* 1 if X is an fp register.  */
        !           577: 
        !           578: #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X)))
        !           579: 
        !           580: /* Maximum number of registers that can appear in a valid memory address.  */
        !           581: 
        !           582: #define MAX_REGS_PER_ADDRESS 2
        !           583: 
        !           584: /* Recognize any constant value that is a valid address.  */
        !           585: 
        !           586: #define CONSTANT_ADDRESS_P(X)  CONSTANT_P (X)
        !           587: 
        !           588: /* Nonzero if the constant value X is a legitimate general operand.
        !           589:    It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE.  */
        !           590: 
        !           591: #define LEGITIMATE_CONSTANT_P(X)               \
        !           592:  ((GET_CODE (X) == CONST_INT                   \
        !           593:    && (unsigned) (INTVAL (X) + 0x2000) < 0x4000)\
        !           594:   || (GET_CODE (X) == SYMBOL_REF && (X)->unchanging))
        !           595: 
        !           596: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
        !           597:    and check its validity for a certain class.
        !           598:    We have two alternate definitions for each of them.
        !           599:    The usual definition accepts all pseudo regs; the other rejects
        !           600:    them unless they have been allocated suitable hard regs.
        !           601:    The symbol REG_OK_STRICT causes the latter definition to be used.
        !           602: 
        !           603:    Most source files want to accept pseudo regs in the hope that
        !           604:    they will get allocated to the class that the insn wants them to be in.
        !           605:    Source files for reload pass need to be strict.
        !           606:    After reload, it makes no difference, since pseudo regs have
        !           607:    been eliminated by then.  */
        !           608: 
        !           609: #ifndef REG_OK_STRICT
        !           610: 
        !           611: /* Nonzero if X is a hard reg that can be used as an index
        !           612:    or if it is a pseudo reg.  */
        !           613: #define REG_OK_FOR_INDEX_P(X) (((unsigned) REGNO (X)) - 32 >= 14)
        !           614: /* Nonzero if X is a hard reg that can be used as a base reg
        !           615:    or if it is a pseudo reg.  */
        !           616: #define REG_OK_FOR_BASE_P(X) (((unsigned) REGNO (X)) - 32 >= 14)
        !           617: 
        !           618: #else
        !           619: 
        !           620: /* Nonzero if X is a hard reg that can be used as an index.  */
        !           621: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
        !           622: /* Nonzero if X is a hard reg that can be used as a base reg.  */
        !           623: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
        !           624: 
        !           625: #endif
        !           626: 
        !           627: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
        !           628:    that is a valid memory address for an instruction.
        !           629:    The MODE argument is the machine mode for the MEM expression
        !           630:    that wants to use this address.
        !           631: 
        !           632:    On SPUR, the actual legitimate addresses must be REG+REG or REG+SMALLINT.
        !           633:    But we can treat a SYMBOL_REF as legitimate if it is part of this
        !           634:    function's constant-pool, because such addresses can actually
        !           635:    be output as REG+SMALLINT.  */
        !           636: 
        !           637: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)  \
        !           638: { if (GET_CODE (X) == REG                      \
        !           639:       && REG_OK_FOR_BASE_P (X))                        \
        !           640:     goto ADDR;                                 \
        !           641:   if (GET_CODE (X) == SYMBOL_REF && (X)->unchanging)   \
        !           642:     goto ADDR;                                 \
        !           643:   if (GET_CODE (X) == PLUS                     \
        !           644:       && GET_CODE (XEXP (X, 0)) == REG         \
        !           645:       && REG_OK_FOR_BASE_P (XEXP (X, 0)))      \
        !           646:     {                                          \
        !           647:       if (GET_CODE (XEXP (X, 1)) == CONST_INT  \
        !           648:          && INTVAL (XEXP (X, 1)) >= -0x2000    \
        !           649:          && INTVAL (XEXP (X, 1)) < 0x2000)     \
        !           650:        goto ADDR;                              \
        !           651:     }                                          \
        !           652: }
        !           653: 
        !           654: /* Try machine-dependent ways of modifying an illegitimate address
        !           655:    to be legitimate.  If we find one, return the new, valid address.
        !           656:    This macro is used in only one place: `memory_address' in explow.c.
        !           657: 
        !           658:    OLDX is the address as it was before break_out_memory_refs was called.
        !           659:    In some cases it is useful to look at this to decide what needs to be done.
        !           660: 
        !           661:    MODE and WIN are passed so that this macro can use
        !           662:    GO_IF_LEGITIMATE_ADDRESS.
        !           663: 
        !           664:    It is always safe for this macro to do nothing.  It exists to recognize
        !           665:    opportunities to optimize the output.  */
        !           666: 
        !           667: /* On SPUR, change REG+N into REG+REG, and REG+(X*Y) into REG+REG.  */
        !           668: 
        !           669: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN)    \
        !           670: { if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1)))        \
        !           671:     (X) = gen_rtx (PLUS, SImode, XEXP (X, 0),                  \
        !           672:                   copy_to_mode_reg (SImode, XEXP (X, 1)));     \
        !           673:   if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0)))        \
        !           674:     (X) = gen_rtx (PLUS, SImode, XEXP (X, 1),                  \
        !           675:                   copy_to_mode_reg (SImode, XEXP (X, 0)));     \
        !           676:   if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT)  \
        !           677:     (X) = gen_rtx (PLUS, SImode, XEXP (X, 1),                  \
        !           678:                   force_operand (XEXP (X, 0), 0));             \
        !           679:   if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT)  \
        !           680:     (X) = gen_rtx (PLUS, SImode, XEXP (X, 0),                  \
        !           681:                   force_operand (XEXP (X, 1), 0));             \
        !           682:   if (memory_address_p (MODE, X))                              \
        !           683:     goto WIN; }
        !           684: 
        !           685: /* Go to LABEL if ADDR (a legitimate address expression)
        !           686:    has an effect that depends on the machine mode it is used for.
        !           687:    On the SPUR this is never true.  */
        !           688: 
        !           689: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
        !           690: 
        !           691: /* Specify the machine mode that this machine uses
        !           692:    for the index in the tablejump instruction.  */
        !           693: #define CASE_VECTOR_MODE SImode
        !           694: 
        !           695: /* Define this if the tablejump instruction expects the table
        !           696:    to contain offsets from the address of the table.
        !           697:    Do not define this if the table should contain absolute addresses.  */
        !           698: /* #define CASE_VECTOR_PC_RELATIVE */
        !           699: 
        !           700: /* Specify the tree operation to be used to convert reals to integers.  */
        !           701: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
        !           702: 
        !           703: /* This is the kind of divide that is easiest to do in the general case.  */
        !           704: #define EASY_DIV_EXPR TRUNC_DIV_EXPR
        !           705: 
        !           706: /* Define this as 1 if `char' should by default be signed; else as 0.  */
        !           707: #define DEFAULT_SIGNED_CHAR 0
        !           708: 
        !           709: /* Max number of bytes we can move from memory to memory
        !           710:    in one reasonably fast instruction.  */
        !           711: #define MOVE_MAX 4
        !           712: 
        !           713: /* Nonzero if access to memory by bytes is slow and undesirable.  */
        !           714: #define SLOW_BYTE_ACCESS 1
        !           715: 
        !           716: /* Do not break .stabs pseudos into continuations.  */
        !           717: #define DBX_CONTIN_LENGTH 0
        !           718: 
        !           719: /* Don't try to use the `x' type-cross-reference character in DBX data.
        !           720:    Also has the consequence of putting each struct, union or enum
        !           721:    into a separate .stabs, containing only cross-refs to the others.  */
        !           722: #define DBX_NO_XREFS
        !           723: 
        !           724: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
        !           725:    is done just by pretending it is already truncated.  */
        !           726: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
        !           727: 
        !           728: /* Specify the machine mode that pointers have.
        !           729:    After generation of rtl, the compiler makes no further distinction
        !           730:    between pointers and any other objects of this machine mode.  */
        !           731: #define Pmode SImode
        !           732: 
        !           733: /* A function address in a call instruction
        !           734:    is a byte address (for indexing purposes)
        !           735:    so give the MEM rtx a byte's mode.  */
        !           736: #define FUNCTION_MODE SImode
        !           737: 
        !           738: /* Define this if addresses of constant functions
        !           739:    shouldn't be put through pseudo regs where they can be cse'd.
        !           740:    Desirable on machines where ordinary constants are expensive
        !           741:    but a CALL with constant address is cheap.  */
        !           742: #define NO_FUNCTION_CSE
        !           743: 
        !           744: /* Compute the cost of computing a constant rtl expression RTX
        !           745:    whose rtx-code is CODE.  The body of this macro is a portion
        !           746:    of a switch statement.  If the code is computed here,
        !           747:    return it with a return statement.  Otherwise, break from the switch.  */
        !           748: 
        !           749: #define CONST_COSTS(RTX,CODE) \
        !           750:   case CONST_INT:                                              \
        !           751:     if (INTVAL (RTX) < 0x2000 && INTVAL (RTX) >= -0x2000) return 1; \
        !           752:   case CONST:                                                  \
        !           753:   case LABEL_REF:                                              \
        !           754:   case SYMBOL_REF:                                             \
        !           755:     return 2;                                                  \
        !           756:   case CONST_DOUBLE:                                           \
        !           757:     return 4;
        !           758: 
        !           759: /* Tell final.c how to eliminate redundant test instructions.  */
        !           760: 
        !           761: /* Here we define machine-dependent flags and fields in cc_status
        !           762:    (see `conditions.h').  */
        !           763: 
        !           764: /* (None are needed on SPUR.)  */
        !           765: 
        !           766: /* Store in cc_status the expressions
        !           767:    that the condition codes will describe
        !           768:    after execution of an instruction whose pattern is EXP.
        !           769:    Do not alter them if the instruction would not alter the cc's.  */
        !           770: 
        !           771: /* The SPUR does not really have a condition code.  */
        !           772: 
        !           773: #define NOTICE_UPDATE_CC(EXP) \
        !           774: { CC_STATUS_INIT; }
        !           775: 
        !           776: /* Control the assembler format that we output.  */
        !           777: 
        !           778: /* Output at beginning of assembler file.  */
        !           779: 
        !           780: #define ASM_FILE_START ""
        !           781: 
        !           782: /* Output to assembler file text saying following lines
        !           783:    may contain character constants, extra white space, comments, etc.  */
        !           784: 
        !           785: #define ASM_APP_ON ""
        !           786: 
        !           787: /* Output to assembler file text saying following lines
        !           788:    no longer contain unusual constructs.  */
        !           789: 
        !           790: #define ASM_APP_OFF ""
        !           791: 
        !           792: /* Output before read-only data.  */
        !           793: 
        !           794: #define TEXT_SECTION_ASM_OP ".text"
        !           795: 
        !           796: /* Output before writable data.  */
        !           797: 
        !           798: #define DATA_SECTION_ASM_OP ".data"
        !           799: 
        !           800: /* How to refer to registers in assembler output.
        !           801:    This sequence is indexed by compiler's hard-register-number (see above).  */
        !           802: 
        !           803: #define REGISTER_NAMES \
        !           804: {"r0", "r1", "r2", "r3", "r4", "r5", "r6", "r7", "r8", "r9",           \
        !           805:  "r10", "r11", "r12", "r13", "r14", "r15", "r16", "r17", "r18", "r19", \
        !           806:  "r20", "r21", "r22", "r23", "r24", "r25", "r26", "r27", "r28", "r29", \
        !           807:  "r30", "r31",                                                         \
        !           808:  "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", "f8", "f9",   \
        !           809:  "f10", "f11", "f12", "f13", "f14" }
        !           810: 
        !           811: /* How to renumber registers for dbx and gdb.  */
        !           812: 
        !           813: #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
        !           814: 
        !           815: /* This is how to output the definition of a user-level label named NAME,
        !           816:    such as the label on a static function or variable NAME.  */
        !           817: 
        !           818: #define ASM_OUTPUT_LABEL(FILE,NAME)    \
        !           819:   do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
        !           820: 
        !           821: /* This is how to output a command to make the user-level label named NAME
        !           822:    defined for reference from other files.  */
        !           823: 
        !           824: #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
        !           825:   do { fputs (".globl ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)
        !           826: 
        !           827: /* This is how to output a reference to a user-level label named NAME.
        !           828:    `assemble_name' uses this.  */
        !           829: 
        !           830: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
        !           831:   fprintf (FILE, "_%s", NAME)
        !           832: 
        !           833: /* This is how to output an internal numbered label where
        !           834:    PREFIX is the class of label and NUM is the number within the class.  */
        !           835: 
        !           836: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)     \
        !           837:   fprintf (FILE, "%s%d:\n", PREFIX, NUM)
        !           838: 
        !           839: /* This is how to store into the string LABEL
        !           840:    the symbol_ref name of an internal numbered label where
        !           841:    PREFIX is the class of label and NUM is the number within the class.
        !           842:    This is suitable for output with `assemble_name'.  */
        !           843: 
        !           844: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)  \
        !           845:   sprintf (LABEL, "*%s%d", PREFIX, NUM)
        !           846: 
        !           847: /* This is how to output an assembler line defining a `double' constant.  */
        !           848: 
        !           849: #define ASM_OUTPUT_DOUBLE(FILE,VALUE)  \
        !           850:   fprintf (FILE, "\t.double %.20e\n", (VALUE))
        !           851: 
        !           852: /* This is how to output an assembler line defining a `float' constant.  */
        !           853: 
        !           854: #define ASM_OUTPUT_FLOAT(FILE,VALUE)  \
        !           855:   fprintf (FILE, "\t.single %.12e\n", (VALUE))
        !           856: 
        !           857: /* This is how to output an assembler line defining an `int' constant.  */
        !           858: 
        !           859: #define ASM_OUTPUT_INT(FILE,VALUE)  \
        !           860: ( fprintf (FILE, "\t.long "),                  \
        !           861:   output_addr_const (FILE, (VALUE)),           \
        !           862:   fprintf (FILE, "\n"))
        !           863: 
        !           864: /* Likewise for `char' and `short' constants.  */
        !           865: 
        !           866: #define ASM_OUTPUT_SHORT(FILE,VALUE)  \
        !           867: ( fprintf (FILE, "\t.word "),                  \
        !           868:   output_addr_const (FILE, (VALUE)),           \
        !           869:   fprintf (FILE, "\n"))
        !           870: 
        !           871: #define ASM_OUTPUT_CHAR(FILE,VALUE)  \
        !           872: ( fprintf (FILE, "\t.byte "),                  \
        !           873:   output_addr_const (FILE, (VALUE)),           \
        !           874:   fprintf (FILE, "\n"))
        !           875: 
        !           876: /* This is how to output an assembler line for a numeric constant byte.  */
        !           877: 
        !           878: #define ASM_OUTPUT_BYTE(FILE,VALUE)  \
        !           879:   fprintf (FILE, "\t.byte 0x%x\n", (VALUE))
        !           880: 
        !           881: /* This is how to output an element of a case-vector that is absolute.  */
        !           882: 
        !           883: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
        !           884:   fprintf (FILE, "\t.long L%d\n", VALUE)
        !           885: 
        !           886: /* This is how to output an element of a case-vector that is relative.
        !           887:    (SPUR does not use such vectors,
        !           888:    but we must define this macro anyway.)  */
        !           889: 
        !           890: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)  \
        !           891:   fprintf (FILE, "\t.word L%d-L%d\n", VALUE, REL)
        !           892: 
        !           893: /* This is how to output an assembler line
        !           894:    that says to advance the location counter
        !           895:    to a multiple of 2**LOG bytes.  */
        !           896: 
        !           897: #define ASM_OUTPUT_ALIGN(FILE,LOG)     \
        !           898:   if ((LOG) != 0)                      \
        !           899:     fprintf (FILE, "\t.align %d\n", (LOG))
        !           900: 
        !           901: #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
        !           902:   fprintf (FILE, "\t.space %d\n", (SIZE))
        !           903: 
        !           904: /* This says how to output an assembler line
        !           905:    to define a global common symbol.  */
        !           906: 
        !           907: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE)  \
        !           908: ( fputs (".comm ", (FILE)),                    \
        !           909:   assemble_name ((FILE), (NAME)),              \
        !           910:   fprintf ((FILE), ",%d\n", (SIZE)))
        !           911: 
        !           912: /* This says how to output an assembler line
        !           913:    to define a local common symbol.  */
        !           914: 
        !           915: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE)  \
        !           916: ( fputs (".lcomm ", (FILE)),                   \
        !           917:   assemble_name ((FILE), (NAME)),              \
        !           918:   fprintf ((FILE), ",%d\n", (SIZE)))
        !           919: 
        !           920: /* Store in OUTPUT a string (made with alloca) containing
        !           921:    an assembler-name for a local static variable named NAME.
        !           922:    LABELNO is an integer which is different for each call.  */
        !           923: 
        !           924: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
        !           925: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10),   \
        !           926:   sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
        !           927: 
        !           928: /* Define the parentheses used to group arithmetic operations
        !           929:    in assembler code.  */
        !           930: 
        !           931: #define ASM_OPEN_PAREN "("
        !           932: #define ASM_CLOSE_PAREN ")"
        !           933: 
        !           934: /* Define results of standard character escape sequences.  */
        !           935: #define TARGET_BELL 007
        !           936: #define TARGET_BS 010
        !           937: #define TARGET_TAB 011
        !           938: #define TARGET_NEWLINE 012
        !           939: #define TARGET_VT 013
        !           940: #define TARGET_FF 014
        !           941: #define TARGET_CR 015
        !           942: 
        !           943: /* Print operand X (an rtx) in assembler syntax to file FILE.
        !           944:    CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
        !           945:    For `%' followed by punctuation, CODE is the punctuation and X is null.
        !           946: 
        !           947:    On SPUR, the CODE can be `r', meaning this is a register-only operand
        !           948:    and an immediate zero should be represented as `r0'.  */
        !           949: 
        !           950: #define PRINT_OPERAND(FILE, X, CODE)  \
        !           951: { if (GET_CODE (X) == REG)                                             \
        !           952:     fprintf (FILE, "%s", reg_name [REGNO (X)]);                                \
        !           953:   else if (GET_CODE (X) == MEM)                                                \
        !           954:     output_address (XEXP (X, 0));                                      \
        !           955:   else if (GET_CODE (X) == CONST_DOUBLE)                               \
        !           956:     abort ();                                                          \
        !           957:   else if ((CODE) == 'r' && (X) == const0_rtx)                         \
        !           958:     fprintf (FILE, "r0");                                              \
        !           959:   else { putc ('$', FILE); output_addr_const (FILE, X); }}
        !           960: 
        !           961: /* Print a memory address as an operand to reference that memory location.  */
        !           962: 
        !           963: #define PRINT_OPERAND_ADDRESS(FILE, ADDR)  \
        !           964: { register rtx base, index = 0;                                        \
        !           965:   int offset = 0;                                              \
        !           966:   register rtx addr = ADDR;                                    \
        !           967:   if (GET_CODE (addr) == REG)                                  \
        !           968:     {                                                          \
        !           969:       fprintf (FILE, "%s,$0", reg_name [REGNO (addr)]);                \
        !           970:     }                                                          \
        !           971:   else if (GET_CODE (addr) == PLUS)                            \
        !           972:     {                                                          \
        !           973:       if (GET_CODE (XEXP (addr, 0)) == CONST_INT)              \
        !           974:        offset = INTVAL (XEXP (addr, 0)), base = XEXP (addr, 1);\
        !           975:       else if (GET_CODE (XEXP (addr, 1)) == CONST_INT)         \
        !           976:        offset = INTVAL (XEXP (addr, 1)), base = XEXP (addr, 0);\
        !           977:       else                                                     \
        !           978:        base = XEXP (addr, 0), index = XEXP (addr, 1);          \
        !           979:       fprintf (FILE, "%s,", reg_name [REGNO (base)]);          \
        !           980:       if (index == 0)                                          \
        !           981:        fprintf (FILE, "$%d", offset);                          \
        !           982:       else                                                     \
        !           983:        fprintf (FILE, "%s,", reg_name [REGNO (index)]);        \
        !           984:     }                                                          \
        !           985:   else                                                         \
        !           986:     {                                                          \
        !           987:       fprintf (FILE, "r24,$(");                                        \
        !           988:       output_addr_const (FILE, addr);                          \
        !           989:       fprintf (FILE, "-0b)");                                  \
        !           990:     }                                                          \
        !           991: }

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