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Annotation of gcc/config/hp800.h, revision 1.1

1.1     ! root        1: /* Definitions of target machine for GNU compiler, for the HP Spectrum.
        !             2:    Copyright (C) 1992 Free Software Foundation, Inc.
        !             3:    Contributed by Michael Tiemann ([email protected])
        !             4:    and Tim Moore ([email protected]) of the Center for
        !             5:    Software Science at the University of Utah.
        !             6: 
        !             7: This file is part of GNU CC.
        !             8: 
        !             9: GNU CC is free software; you can redistribute it and/or modify
        !            10: it under the terms of the GNU General Public License as published by
        !            11: the Free Software Foundation; either version 1, or (at your option)
        !            12: any later version.
        !            13: 
        !            14: GNU CC is distributed in the hope that it will be useful,
        !            15: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            17: GNU General Public License for more details.
        !            18: 
        !            19: You should have received a copy of the GNU General Public License
        !            20: along with GNU CC; see the file COPYING.  If not, write to
        !            21: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            22: 
        !            23: enum cmp_type                          /* comparison type */
        !            24: {
        !            25:   CMP_SI,                              /* compare integers */
        !            26:   CMP_SF,                              /* compare single precision floats */
        !            27:   CMP_DF,                              /* compare double precision floats */
        !            28:   CMP_MAX                              /* max comparison type */
        !            29: };
        !            30: 
        !            31: #define DBX_DEBUGGING_INFO
        !            32: #define DEFAULT_GDB_EXTENSIONS 0
        !            33: 
        !            34: /* Defines for a K&R CC */
        !            35: 
        !            36: #ifdef OLD_CC
        !            37: #define CPP_SPEC "%{!gnu:-nostdinc %{!nostinc:-I/usr/include}} \
        !            38:   %{gnu:%{nostdinc}} %{!gnu:-traditional} -Dvolatile=__volatile"
        !            39: #define CC1_SPEC "%{!gnu:-traditional -fwritable-strings -fno-defer-pop} \
        !            40:   %{pg:} %{p:}"
        !            41: #else
        !            42: #define CC1_SPEC "%{pg:} %{p:}"
        !            43: #endif
        !            44:   
        !            45: /* Brain-dead loader */
        !            46: #ifdef hpux8
        !            47: #define LINK_SPEC "-u main -a archive"
        !            48: #else
        !            49: #define LINK_SPEC "-u main"
        !            50: #endif
        !            51: 
        !            52: /* Don't schedule insns unless explicitly asked...
        !            53:    it messes with debugging too much.  Don't follow jumps except at
        !            54:    higher optimizations levels, since it's so slow to do so.  */
        !            55: #define OPTIMIZATION_OPTIONS(OPTIMIZE) \
        !            56:   (flag_omit_frame_pointer = (optimize >= 2),          \
        !            57:    flag_cse_follow_jumps = (optimize >= 3),            \
        !            58:    flag_schedule_insns = (optimize >= 4),              \
        !            59:    flag_schedule_insns_after_reload = (optimize >= 5)) \
        !            60: 
        !            61:   
        !            62: /* These compiler options take an argument.  We ignore -target for now.  */
        !            63: 
        !            64: #define WORD_SWITCH_TAKES_ARG(STR)                     \
        !            65:  (!strcmp (STR, "Tdata") || !strcmp (STR, "include")   \
        !            66:   || !strcmp (STR, "imacros") || !strcmp (STR, "target"))
        !            67: 
        !            68: /* Names to predefine in the preprocessor for this target machine.  */
        !            69: 
        !            70: #ifdef hpux
        !            71: #define CPP_PREDEFINES "-Dhp9000s800 -D__hp9000s800 -Dhp9k8 -DPWB -Dhpux -Dunix -D_HPUX_SOURCE"
        !            72: #else
        !            73: #define CPP_PREDEFINES "-Dhp9000s800 -D__hp9000s800 -Dhp9k8 -Dunix -D_HPUX_SOURCE -Dhp9000 -Dhp800 -Dspectrum -DREVARGV"
        !            74: #endif
        !            75: 
        !            76: /* Print subsidiary information on the compiler version in use.  */
        !            77: 
        !            78: #define TARGET_VERSION fprintf (stderr, " (hp9000s800)");
        !            79: 
        !            80: /* Run-time compilation parameters selecting different hardware subsets.
        !            81: 
        !            82:    On the the hp9k800, we don't yet need any. But ... */
        !            83: 
        !            84: extern int target_flags;
        !            85: 
        !            86: /* compile code for PA-RISC 1.1 ("Snake") */
        !            87: 
        !            88: #define TARGET_SNAKE (target_flags & 1)
        !            89: 
        !            90: /* Macro to define tables used to set the flags.
        !            91:    This is a list in braces of pairs in braces,
        !            92:    each pair being { "NAME", VALUE }
        !            93:    where VALUE is the bits to set or minus the bits to clear.
        !            94:    An empty string NAME is used to identify the default VALUE.  */
        !            95: 
        !            96: #define TARGET_SWITCHES \
        !            97:   {{"snake", 1},       \
        !            98:    { "", TARGET_DEFAULT}}
        !            99: 
        !           100: #define TARGET_DEFAULT 0
        !           101: 
        !           102: /* target machine storage layout */
        !           103: 
        !           104: /* Define this if most significant bit is lowest numbered
        !           105:    in instructions that operate on numbered bit-fields.  */
        !           106: #define BITS_BIG_ENDIAN 1
        !           107: 
        !           108: /* Define this if most significant byte of a word is the lowest numbered.  */
        !           109: /* That is true on the hp9k8.  */
        !           110: #define BYTES_BIG_ENDIAN 1
        !           111: 
        !           112: /* Define this if most significant word of a multiword number is numbered.  */
        !           113: /* For the hp9k800 we can decide arbitrarily
        !           114:    since there are no machine instructions for them.  */
        !           115: #define WORDS_BIG_ENDIAN 1
        !           116: 
        !           117: /* number of bits in an addressible storage unit */
        !           118: #define BITS_PER_UNIT 8
        !           119: 
        !           120: /* Width in bits of a "word", which is the contents of a machine register.
        !           121:    Note that this is not necessarily the width of data type `int';
        !           122:    if using 16-bit ints on a 68000, this would still be 32.
        !           123:    But on a machine with 16-bit registers, this would be 16.  */
        !           124: #define BITS_PER_WORD 32
        !           125: 
        !           126: /* Width of a word, in units (bytes).  */
        !           127: #define UNITS_PER_WORD 4
        !           128: 
        !           129: /* Width in bits of a pointer.
        !           130:    See also the macro `Pmode' defined below.  */
        !           131: #define POINTER_SIZE 32
        !           132: 
        !           133: /* Allocation boundary (in *bits*) for storing arguments in argument list.  */
        !           134: #define PARM_BOUNDARY 32
        !           135: 
        !           136: /* Largest alignment required for any stack parameter, in bits.
        !           137:    Don't define this if it is equal to PARM_BOUNDRY */
        !           138: #define MAX_PARM_BOUNDARY 64
        !           139: 
        !           140: /* Boundary (in *bits*) on which stack pointer should be aligned.  */
        !           141: #define STACK_BOUNDARY (TARGET_SNAKE ? 512 : 64)
        !           142: 
        !           143: /* Allocation boundary (in *bits*) for the code of a function.  */
        !           144: #define FUNCTION_BOUNDARY 32
        !           145: 
        !           146: /* Alignment of field after `int : 0' in a structure.  */
        !           147: #define EMPTY_FIELD_BOUNDARY 32
        !           148: 
        !           149: /* Every structure's size must be a multiple of this.  */
        !           150: #define STRUCTURE_SIZE_BOUNDARY 8
        !           151: 
        !           152: /* A bitfield declared as `int' forces `int' alignment for the struct.  */
        !           153: #define PCC_BITFIELD_TYPE_MATTERS 1
        !           154: 
        !           155: /* No data type wants to be aligned rounder than this.  */
        !           156: #define BIGGEST_ALIGNMENT 64
        !           157: 
        !           158: /* Get around hp-ux assembler bug, and make strcpy of constants fast. */
        !           159: #define CONSTANT_ALIGNMENT(CODE, TYPEALIGN) \
        !           160:   ((TYPEALIGN) < 32 ? 32 : (TYPEALIGN))
        !           161: 
        !           162: /* Make arrays of chars word-aligned for the same reasons.  */
        !           163: #define DATA_ALIGNMENT(TYPE, ALIGN)            \
        !           164:   (TREE_CODE (TYPE) == ARRAY_TYPE              \
        !           165:    && TYPE_MODE (TREE_TYPE (TYPE)) == QImode   \
        !           166:    && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
        !           167: 
        !           168: 
        !           169: /* Define this if move instructions will actually fail to work
        !           170:    when given unaligned data.  */
        !           171: #define STRICT_ALIGNMENT
        !           172: 
        !           173: /* Generate calls to memcpy, memcmp and memset.  */
        !           174: #define TARGET_MEM_FUNCTIONS
        !           175: 
        !           176: /* Standard register usage.  */
        !           177: 
        !           178: /* Number of actual hardware registers.
        !           179:    The hardware registers are assigned numbers for the compiler
        !           180:    from 0 to just below FIRST_PSEUDO_REGISTER.
        !           181:    All registers that the compiler knows about must be given numbers,
        !           182:    even those that are not normally considered general registers.
        !           183: 
        !           184:    The hp9k800 has 32 fullword registers and 16 floating point
        !           185:    registers. The floating point registers hold either word or double
        !           186:    word values.
        !           187:    
        !           188:    16 additional registers are reserved.
        !           189:    
        !           190:    PA-RISC 1.1 has 32 fullword registers and 32 floating point
        !           191:    registers. However, the floating point registers behave
        !           192:    differently: the left and right halves of registers are addressable
        !           193:    as 32 bit registers. So, we will set things up like the 68k which
        !           194:    has different fp units: define seperate register sets for the 1.0
        !           195:    and 1.1 fp units. */
        !           196: 
        !           197: #define FIRST_PSEUDO_REGISTER 113  /* 32 + 16 1.0 regs + 64 1.1 regs + */
        !           198:                                   /* 1 shift reg */
        !           199: 
        !           200: /* 1 for registers that have pervasive standard uses
        !           201:    and are not available for the register allocator.
        !           202: 
        !           203:    On the hp9k800, these are:
        !           204:    Reg 0       = 0 (hardware). However, 0 is used for condition code,
        !           205:                   so is not fixed.
        !           206:    Reg 1       = ADDIL target/Temporary (hardware).
        !           207:    Reg 2       = Return Pointer
        !           208:    Reg 3       = Unused
        !           209:    Reg 4       = Frame Pointer (Gnu)
        !           210:    Reg 5-18    = Preserved Registers
        !           211:    Reg 19-22   = Temporary Registers
        !           212:    Reg 23-26   = Temporary/Parameter Registers
        !           213:    Reg 27      = Global Data Pointer (hp)
        !           214:    Reg 28      = Temporary/???/Return Value register
        !           215:    Reg 29      = Temporary/Static Chain/Return Value register
        !           216:    Reg 30      = stack pointer
        !           217:    Reg 31      = Temporary/Millicode Return Pointer (hp)
        !           218: 
        !           219:    Freg 0-3    = Status Registers
        !           220:    Freg 4-7    = Arguments/Return Value
        !           221:    Freg 8-11   = Temporary Registers
        !           222:    Freg 12-15  = Preserved Registers
        !           223: 
        !           224:    Freg 16-31  = Reserved
        !           225: 
        !           226:    On the Snake, fp regs are
        !           227: 
        !           228:    Freg 0-3    = Status Registers
        !           229:    Freg 4L-7R  = Arguments/Return Value
        !           230:    Freg 8L-11R = Temporary Registers
        !           231:    Freg 12L-15R        = Preserved Registers
        !           232: 
        !           233:    Freg 16L-31R        = ?? Some partition of temporary and preserved; assume
        !           234:    preserved for now.
        !           235:    
        !           236: 
        !           237: */
        !           238: 
        !           239: #define FIXED_REGISTERS  \
        !           240:  {0, 0, 1, 1, 1, 0, 0, 0, \
        !           241:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           242:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           243:   0, 0, 0, 1, 0, 0, 1, 1, \
        !           244:   /* 1.0 fp registers */ \
        !           245:   1, 1, 1, 1, 0, 0, 0, 0, \
        !           246:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           247:   /* 1.1 fp registers */ \
        !           248:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           249:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           250:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           251:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           252:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           253:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           254:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           255:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           256:   1}
        !           257: 
        !           258: /* 1 for registers not available across function calls.
        !           259:    These must include the FIXED_REGISTERS and also any
        !           260:    registers that can be used without being saved.
        !           261:    The latter must include the registers where values are returned
        !           262:    and the register where structure-value addresses are passed.
        !           263:    Aside from that, you can include as many other registers as you like.  */
        !           264: #define CALL_USED_REGISTERS  \
        !           265:  {1, 1, 1, 1, 1, 0, 0, 0, \
        !           266:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           267:   0, 0, 0, 1, 1, 1, 1, 1, \
        !           268:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           269:   /* 1.0 fp registers */ \
        !           270:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           271:   1, 1, 1, 1, 0, 0, 0, 0, \
        !           272:   /* 1.1 fp registers */ \
        !           273:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           274:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           275:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           276:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           277:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           278:   0, 0, 0, 0, 1, 1, 1, 1, \
        !           279:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           280:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           281:   1}    
        !           282: 
        !           283: /* Make sure everything's fine if we *don't* have a given processor.
        !           284:    This assumes that putting a register in fixed_regs will keep the
        !           285:    compiler's mitts completely off it.  We don't bother to zero it out
        !           286:    of register classes. */
        !           287: 
        !           288: #define CONDITIONAL_REGISTER_USAGE \
        !           289: {                                              \
        !           290:   int i;                                       \
        !           291:   HARD_REG_SET x;                              \
        !           292:   if (!TARGET_SNAKE)                           \
        !           293:     {                                          \
        !           294:       COPY_HARD_REG_SET (x, reg_class_contents[(int)SNAKE_FP_REGS]);\
        !           295:       for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \
        !           296:        if (TEST_HARD_REG_BIT (x, i))           \
        !           297:        fixed_regs[i] = call_used_regs[i] = 1;  \
        !           298:     }                                          \
        !           299:   else                                         \
        !           300:     {                                          \
        !           301:       COPY_HARD_REG_SET (x, reg_class_contents[(int)FP_REGS]); \
        !           302:       for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \
        !           303:        if (TEST_HARD_REG_BIT (x, i))           \
        !           304:        fixed_regs[i] = call_used_regs[i] = 1;  \
        !           305:     }                                          \
        !           306: }
        !           307: 
        !           308: /* Allocated the call used registers first.  This should minimize
        !           309:    the number of registers that need to be saved (as call used
        !           310:    registers will generally not be allocated across a call).
        !           311: 
        !           312:    It is possible that it would be wise to allocate the floating point
        !           313:    registers before the regular ones, but I doubt it matters.  Same
        !           314:    comment for parameters versus normal.  */
        !           315: 
        !           316: #define REG_ALLOC_ORDER \
        !           317:  {19, 20, 21, 22, 23, 24, 25, 26,      \
        !           318:   27, 28, 29, 30, 31, 40, 41, 42,      \
        !           319:   43, 36, 37, 38, 39,                  \
        !           320:   56, 57, 58, 59, 60, 61, 62, 63,      \
        !           321:   64, 65, 66, 67, 68, 69, 70, 71,      \
        !           322:   72, 73, 74, 75, 76, 77, 78, 79,      \
        !           323:   80, 81, 82, 83, 84, 85, 86, 87,      \
        !           324:   88, 89, 90, 91, 92, 93, 94, 95,      \
        !           325:   96, 97, 98, 99, 100, 101, 102, 103,  \
        !           326:   104, 105, 106, 107, 108, 109, 110, 111,\
        !           327:    5,  6,  7,                          \
        !           328:    8,  9, 10, 11, 12, 13, 14, 15,      \
        !           329:   16, 17, 18, 44, 45, 46, 47,          \
        !           330:   48, 49, 50, 51, 52, 53, 54, 55,      \
        !           331:      1,        \
        !           332:    2,  3,  4, 32, 33, 34, 35,  0,      \
        !           333:    112}
        !           334: 
        !           335: 
        !           336: /* Return number of consecutive hard regs needed starting at reg REGNO
        !           337:    to hold something of mode MODE.
        !           338:    This is ordinarily the length in words of a value of mode MODE
        !           339:    but can be less for certain modes in special long registers.
        !           340: 
        !           341:    On the hp9k800, ordinary registers hold 32 bits worth;
        !           342:    The floating point registers are 64 bits wide. Snake fp regs are 32
        !           343:    bits wide */
        !           344: #define HARD_REGNO_NREGS(REGNO, MODE)   \
        !           345:   (((REGNO) < 32 || (REGNO) >= 48)     \
        !           346:    ? ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) : 1)
        !           347: 
        !           348: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
        !           349:    On the hp9k800, the cpu registers can hold any mode.  We
        !           350:    force this to be an even register is it cannot hold the full mode.  */
        !           351: #define HARD_REGNO_MODE_OK(REGNO, MODE) \
        !           352:   ((REGNO) == 0 ? (MODE) == CCmode || (MODE) == CCFPmode               \
        !           353:    : (REGNO) < 32 ? ((GET_MODE_SIZE (MODE) <= 4) ? 1 : ((REGNO) & 1) == 0)\
        !           354:    : (REGNO) < 48 ? (GET_MODE_SIZE (MODE) >= 4)                                \
        !           355:    : (GET_MODE_SIZE (MODE) > 4 ? ((REGNO) & 1) == 0                    \
        !           356:       : GET_MODE_SIZE (MODE) == 4))
        !           357: 
        !           358: /* Value is 1 if it is a good idea to tie two pseudo registers
        !           359:    when one has mode MODE1 and one has mode MODE2.
        !           360:    If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
        !           361:    for any hard reg, then this must be 0 for correct output.  */
        !           362: #define MODES_TIEABLE_P(MODE1, MODE2) \
        !           363:   ((MODE1) == (MODE2) || GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2))
        !           364: 
        !           365: /* Specify the registers used for certain standard purposes.
        !           366:    The values of these macros are register numbers.  */
        !           367: 
        !           368: /* the hp9k800 pc isn't overloaded on a register that the compiler knows about.  */
        !           369: /* #define PC_REGNUM  */
        !           370: 
        !           371: /* Register to use for pushing function arguments.  */
        !           372: #define STACK_POINTER_REGNUM 30
        !           373: 
        !           374: /* Base register for access to local variables of the function.  */
        !           375: #define FRAME_POINTER_REGNUM 4
        !           376: 
        !           377: /* Value should be nonzero if functions must have frame pointers.
        !           378:    Zero means the frame pointer need not be set up (and parms
        !           379:    may be accessed via the stack pointer) in functions that seem suitable.
        !           380:    This is computed in `reload', in reload1.c.  */
        !           381: extern int leaf_function;
        !           382: 
        !           383: #define FRAME_POINTER_REQUIRED (current_function_calls_alloca)
        !           384:   
        !           385: 
        !           386: /* C statement to store the difference between the frame pointer
        !           387:    and the stack pointer values immediately after the function prologue.
        !           388: 
        !           389:    Note, we always pretend that this is a leaf function because if
        !           390:    it's not, there's no point in trying to eliminate the
        !           391:    frame pointer.  If it is a leaf function, we guessed right!  */
        !           392: #define INITIAL_FRAME_POINTER_OFFSET(VAR) \
        !           393:   do { (VAR) = compute_frame_size (get_frame_size (), 1); } while (0)
        !           394: 
        !           395: /* Base register for access to arguments of the function.  */
        !           396: #define ARG_POINTER_REGNUM 4
        !           397: 
        !           398: /* Register in which static-chain is passed to a function.  */
        !           399: /* ??? */
        !           400: #define STATIC_CHAIN_REGNUM 29
        !           401: 
        !           402: /* Register which holds offset table for position-independent
        !           403:    data references.  */
        !           404: 
        !           405: #define PIC_OFFSET_TABLE_REGNUM 18
        !           406: 
        !           407: #define INITIALIZE_PIC initialize_pic ()
        !           408: #define FINALIZE_PIC finalize_pic ()
        !           409: 
        !           410: /* Register in which address to store a structure value
        !           411:    is passed to a function.  */
        !           412: #define STRUCT_VALUE_REGNUM 28
        !           413: 
        !           414: /* Define the classes of registers for register constraints in the
        !           415:    machine description.  Also define ranges of constants.
        !           416: 
        !           417:    One of the classes must always be named ALL_REGS and include all hard regs.
        !           418:    If there is more than one class, another class must be named NO_REGS
        !           419:    and contain no registers.
        !           420: 
        !           421:    The name GENERAL_REGS must be the name of a class (or an alias for
        !           422:    another name such as ALL_REGS).  This is the class of registers
        !           423:    that is allowed by "g" or "r" in a register constraint.
        !           424:    Also, registers outside this class are allocated only when
        !           425:    instructions express preferences for them.
        !           426: 
        !           427:    The classes must be numbered in nondecreasing order; that is,
        !           428:    a larger-numbered class must never be contained completely
        !           429:    in a smaller-numbered class.
        !           430: 
        !           431:    For any two classes, it is very desirable that there be another
        !           432:    class that represents their union.  */
        !           433: 
        !           434:   /* The hp9k800 has four kinds of registers: general regs, 1.0 fp regs,
        !           435:      1.1 fp regs, and the high 1.1 fp regs, to which the operands of
        !           436:      fmpyadd and fmpysub are restricted. */
        !           437: 
        !           438: enum reg_class { NO_REGS, R1_REGS, GENERAL_REGS, FP_REGS, HI_SNAKE_FP_REGS,
        !           439:  SNAKE_FP_REGS, FP_OR_SNAKE_FP_REGS, SHIFT_REGS, ALL_REGS, LIM_REG_CLASSES};
        !           440: 
        !           441: #define N_REG_CLASSES (int) LIM_REG_CLASSES
        !           442: 
        !           443: /* Give names of register classes as strings for dump file.   */
        !           444: 
        !           445: #define REG_CLASS_NAMES \
        !           446:   { "NO_REGS", "R1_REGS", "GENERAL_REGS", "FP_REGS", "HI_SNAKE_FP_REGS",\
        !           447:     "SNAKE_FP_REGS", "FP_OR_SNAKE_FP_REGS", "SHIFT_REGS", "ALL_REGS"}
        !           448: 
        !           449: /* Define which registers fit in which classes.
        !           450:    This is an initializer for a vector of HARD_REG_SET
        !           451:    of length N_REG_CLASSES. Register 0, the "condition code" register,
        !           452:    is in no class. */
        !           453: 
        !           454: #define REG_CLASS_CONTENTS     \
        !           455: { {0, 0, 0, 0},                        /* NO_REGS */           \
        !           456:   {0x2, 0, 0, 0},              /* R1_REGS */           \
        !           457:   {-2, 0, 0, 0},               /* GENERAL_REGS */      \
        !           458:   {0, 0xffff, 0, 0},           /* FP_REGS */           \
        !           459:   {0, 0, 0xffff0000, 0xffff},  /* HI_SNAKE_FP_REGS */  \
        !           460:   {0, 0xffff0000, ~0, 0xffff}, /* SNAKE_FP_REGS */     \
        !           461:   {0, ~0, ~0, 0xffff},         /* FP_OR_SNAKE_FP_REGS */\
        !           462:   {0, 0, 0, 0x10000},          /* SHIFT_REGS */        \
        !           463:   {-2, ~0, ~0, 0x1ffff}}       /* ALL_REGS */
        !           464: 
        !           465: /* The same information, inverted:
        !           466:    Return the class number of the smallest class containing
        !           467:    reg number REGNO.  This could be a conditional expression
        !           468:    or could index an array.  */
        !           469: 
        !           470: #define REGNO_REG_CLASS(REGNO)         \
        !           471:   ((REGNO) == 0 ? NO_REGS              \
        !           472:    : (REGNO) == 1 ? R1_REGS            \
        !           473:    : (REGNO) < 32 ? GENERAL_REGS       \
        !           474:    : (REGNO) < 48 ? FP_REGS            \
        !           475:    : (REGNO) < 80 ? SNAKE_FP_REGS      \
        !           476:    : (REGNO) < 112 ? HI_SNAKE_FP_REGS  \
        !           477:    : SHIFT_REGS)
        !           478: 
        !           479: /* The class value for index registers, and the one for base regs.  */
        !           480: #define INDEX_REG_CLASS GENERAL_REGS
        !           481: #define BASE_REG_CLASS GENERAL_REGS
        !           482: 
        !           483: /* Get reg_class from a letter such as appears in the machine description.  */
        !           484: 
        !           485: #define REG_CLASS_FROM_LETTER(C) \
        !           486:   ((C) == 'r' ? GENERAL_REGS :                                 \
        !           487:    ((C) == 'f' ? (!TARGET_SNAKE ? FP_REGS : NO_REGS) :         \
        !           488:     ((C) == 'x' ? (TARGET_SNAKE ? SNAKE_FP_REGS : NO_REGS) :   \
        !           489:      ((C) == 'y' ? (TARGET_SNAKE ? HI_SNAKE_FP_REGS : NO_REGS) :\
        !           490:       ((C) == 'q' ? SHIFT_REGS :                               \
        !           491:        ((C) == 'a' ? R1_REGS : NO_REGS))))))
        !           492: 
        !           493: /* The letters I, J, K, L and M in a register constraint string
        !           494:    can be used to stand for particular ranges of immediate operands.
        !           495:    This macro defines what the ranges are.
        !           496:    C is the letter, and VALUE is a constant value.
        !           497:    Return 1 if VALUE is in the range specified by C.
        !           498: 
        !           499: HP9000/800 immediate field sizes:
        !           500:   5 bits: scalar/floating short loads + stores; deposit; conditional branch
        !           501:   11 bits: arithmetic immediate, compare immediate
        !           502:   14 bits: loads and stores; load offset
        !           503:   21 bits: load and add immediate long (but this isn't really used)
        !           504:   (there are also 13-bit and 26-bit immediates but only in system instructions)
        !           505: 
        !           506:    `I' is used for the 11 bit constants.
        !           507:    `J' is used for the 14 bit constants.
        !           508:    `K' is used for unsigned 5 bit constants (extract/deposit operands).
        !           509:    `L' is used for the 5 bit constants.
        !           510:    `M' is used for 0.  */
        !           511: 
        !           512: #define CONST_OK_FOR_LETTER_P(VALUE, C)  \
        !           513:   ((C) == 'I' ? (unsigned) ((VALUE) + 0x400) < 0x800           \
        !           514:    : (C) == 'J' ? (unsigned) ((VALUE) + 0x2000) < 0x4000       \
        !           515:    : (C) == 'K' ? (unsigned) (VALUE) < 0x20                    \
        !           516:    : (C) == 'L' ? (unsigned) ((VALUE) + 0x10) < 0x20           \
        !           517:    : (C) == 'M' ? (VALUE) == 0                                 \
        !           518:    : 0)
        !           519: 
        !           520: /* Similar, but for floating constants, and defining letters G and H.
        !           521:    Here VALUE is the CONST_DOUBLE rtx itself.  */
        !           522: 
        !           523: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C)  \
        !           524:   ((C) == 'G' && XINT (VALUE, 0) == 0 && XINT (VALUE, 1) == 0)
        !           525: 
        !           526: /* Given an rtx X being reloaded into a reg required to be
        !           527:    in class CLASS, return the class of reg to actually use.
        !           528:    In general this is just CLASS; but on some machines
        !           529:    in some cases it is preferable to use a more restrictive class.  */
        !           530: #define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS)
        !           531: 
        !           532: /* Return the register class of a scratch register needed to copy IN into
        !           533:    or out of a register in CLASS in MODE.  If it can be done directly,
        !           534:    NO_REGS is returned.  */
        !           535: 
        !           536: #define SECONDARY_RELOAD_CLASS(CLASS,MODE,IN) \
        !           537:   secondary_reload_class (CLASS, MODE, IN)
        !           538: 
        !           539: /* Return the maximum number of consecutive registers
        !           540:    needed to represent mode MODE in a register of class CLASS.  */
        !           541: #define CLASS_MAX_NREGS(CLASS, MODE)   \
        !           542:   ((CLASS) == FP_REGS ? 1 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           543: 
        !           544: /* Stack layout; function entry, exit and calling.  */
        !           545: 
        !           546: /* Define this if pushing a word on the stack
        !           547:    makes the stack pointer a smaller address.  */
        !           548: /* #define STACK_GROWS_DOWNWARD */
        !           549: 
        !           550: /* Believe it or not.  */
        !           551: #define ARGS_GROW_DOWNWARD
        !           552: 
        !           553: /* Define this if the nominal address of the stack frame
        !           554:    is at the high-address end of the local variables;
        !           555:    that is, each additional local variable allocated
        !           556:    goes at a more negative offset in the frame.  */
        !           557: /* #define FRAME_GROWS_DOWNWARD */
        !           558: 
        !           559: /* Offset within stack frame to start allocating local variables at.
        !           560:    If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
        !           561:    first local allocated.  Otherwise, it is the offset to the BEGINNING
        !           562:    of the first local allocated.  */
        !           563: #define STARTING_FRAME_OFFSET 8
        !           564: 
        !           565: /* If we generate an insn to push BYTES bytes,
        !           566:    this says how many the stack pointer really advances by.
        !           567:    On the hp9k800, don't define this because there are no push insns.  */
        !           568: /*  #define PUSH_ROUNDING(BYTES) */
        !           569: 
        !           570: /* Offset of first parameter from the argument pointer register value.
        !           571:    This value will be negated because the arguments grow down.
        !           572:    Also note that on STACK_GROWS_UPWARD machines (such as this one)
        !           573:    this is the distance from the frame pointer to the end of the first
        !           574:    argument, not it's beginning.  To get the real offset of the first
        !           575:    argument, the size of the argument must be added.
        !           576: 
        !           577:    ??? Have to check on this.*/
        !           578: 
        !           579: /* #define FIRST_PARM_OFFSET(FNDECL) 36  */
        !           580: #define FIRST_PARM_OFFSET(FNDECL) -32 
        !           581: 
        !           582: /* Absolute value of offset from top-of-stack address to location to store the
        !           583:    function parameter if it can't go in a register.
        !           584:    Addresses for following parameters are computed relative to this one.  */
        !           585: /* #define FIRST_PARM_CALLER_OFFSET(FNDECL) 36 */
        !           586: #define FIRST_PARM_CALLER_OFFSET(FNDECL) -32 
        !           587: 
        !           588: 
        !           589: /* When a parameter is passed in a register, stack space is still
        !           590:    allocated for it.  */
        !           591: #define REG_PARM_STACK_SPACE(DECL) 16
        !           592: 
        !           593: /* Define this if the above stack space is to be considered part of the
        !           594:    space allocated by the caller.  */
        !           595: #define OUTGOING_REG_PARM_STACK_SPACE
        !           596: 
        !           597: /* Keep the stack pointer constant throughout the function.
        !           598:    This is both an optimization and a neccessity: longjmp
        !           599:    doesn't behave itself when the stack pointer moves within
        !           600:    the function!  */
        !           601: #define ACCUMULATE_OUTGOING_ARGS
        !           602:   
        !           603: /* The weird HPPA calling conventions require a minimum of 48 bytes on 
        !           604:    the stack: 16 bytes for register saves, and 32 bytes for magic.
        !           605:    This is the difference between the logical top of stack and the
        !           606:    actual sp. */ 
        !           607: #define STACK_POINTER_OFFSET -32
        !           608: 
        !           609: #define STACK_DYNAMIC_OFFSET(FNDECL)   \
        !           610:   ((STACK_POINTER_OFFSET) - current_function_outgoing_args_size)
        !           611: 
        !           612: /* Value is 1 if returning from a function call automatically
        !           613:    pops the arguments described by the number-of-args field in the call.
        !           614:    FUNTYPE is the data type of the function (as a tree),
        !           615:    or for a library call it is an identifier node for the subroutine name.  */
        !           616: 
        !           617: #define RETURN_POPS_ARGS(FUNTYPE,SIZE) 0
        !           618: 
        !           619: /* Define how to find the value returned by a function.
        !           620:    VALTYPE is the data type of the value (as a tree).
        !           621:    If the precise function being called is known, FUNC is its FUNCTION_DECL;
        !           622:    otherwise, FUNC is 0.  */
        !           623: 
        !           624: /* On the hp9k800 the value is found in register(s) 28(-29), unless
        !           625:    the mode is SF or DF. Then the value is returned in fr4 (36, ) */
        !           626: 
        !           627: 
        !           628: #define FUNCTION_VALUE(VALTYPE, FUNC)  \
        !           629:   gen_rtx (REG, TYPE_MODE (VALTYPE), ((TYPE_MODE (VALTYPE) == SFmode ||\
        !           630:                                       TYPE_MODE (VALTYPE) == DFmode) ? \
        !           631:                                      (TARGET_SNAKE ? 56 : 36) : 28))
        !           632: 
        !           633: #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC)  \
        !           634:   FUNCTION_VALUE(VALTYPE, FUNC)
        !           635: 
        !           636: /* Define how to find the value returned by a library function
        !           637:    assuming the value has mode MODE.  */
        !           638: 
        !           639: #define LIBCALL_VALUE(MODE) \
        !           640:   gen_rtx (REG, MODE, (MODE == SFmode || MODE == DFmode ?\
        !           641:                       (TARGET_SNAKE ? 56 : 36) : 28))
        !           642: 
        !           643: /* 1 if N is a possible register number for a function value
        !           644:    as seen by the caller.  */
        !           645: 
        !           646: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 28 || (N) == 36 || (N) == 56)
        !           647: 
        !           648: /* 1 if N is a possible register number for function argument passing.  */
        !           649: 
        !           650: #define FUNCTION_ARG_REGNO_P(N) (((N) >= 23 && (N) <= 26) || \
        !           651:                                 ((N) >= 36 && (N) <= 39) || \
        !           652:                                 ((N) >= 56 && (N) <= 63))
        !           653: 
        !           654: /* Define a data type for recording info about an argument list
        !           655:    during the scan of that argument list.  This data type should
        !           656:    hold all necessary information about the function itself
        !           657:    and about the args processed so far, enough to enable macros
        !           658:    such as FUNCTION_ARG to determine where the next arg should go.
        !           659: 
        !           660:    On the hp9k800, this is a single integer, which is a number of words
        !           661:    of arguments scanned so far (including the invisible argument,
        !           662:    if any, which holds the structure-value-address).
        !           663:    Thus 4 or more means all following args should go on the stack.  */
        !           664: 
        !           665: #define CUMULATIVE_ARGS int
        !           666: 
        !           667: /* Initialize a variable CUM of type CUMULATIVE_ARGS
        !           668:    for a call to a function whose data type is FNTYPE.
        !           669:    For a library call, FNTYPE is 0.
        !           670: */
        !           671: 
        !           672: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) ((CUM) = 0)
        !           673: 
        !           674: /* Figure out the size in words of the function argument. */
        !           675: 
        !           676: #define FUNCTION_ARG_SIZE(MODE, TYPE)  \
        !           677:   ((((MODE) != BLKmode ? GET_MODE_SIZE (MODE) : int_size_in_bytes (TYPE))+3)/4)
        !           678: 
        !           679: /* Update the data in CUM to advance over an argument
        !           680:    of mode MODE and data type TYPE.
        !           681:    (TYPE is null for libcalls where that information may not be available.)  */
        !           682: 
        !           683: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)                   \
        !           684:     (((((CUM) & 01) && (TYPE) != 0 && TYPE_ALIGN (TYPE) > BITS_PER_WORD)\
        !           685:       && (CUM)++), (CUM) += FUNCTION_ARG_SIZE(MODE, TYPE))
        !           686: 
        !           687: /* Determine where to put an argument to a function.
        !           688:    Value is zero to push the argument on the stack,
        !           689:    or a hard register in which to store the argument.
        !           690: 
        !           691:    MODE is the argument's machine mode.
        !           692:    TYPE is the data type of the argument (as a tree).
        !           693:     This is null for libcalls where that information may
        !           694:     not be available.
        !           695:    CUM is a variable of type CUMULATIVE_ARGS which gives info about
        !           696:     the preceding args and about the function being called.
        !           697:    NAMED is nonzero if this argument is a named parameter
        !           698:     (otherwise it is an extra parameter matching an ellipsis).  */
        !           699: 
        !           700: /* On the hp9k800 the first four words of args are normally in registers
        !           701:    and the rest are pushed.  But any arg that won't entirely fit in regs
        !           702:    is pushed.  */
        !           703: 
        !           704: #define FUNCTION_ARG_PADDING(MODE, TYPE) function_arg_padding ((MODE), (TYPE))
        !           705: 
        !           706: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED)                           \
        !           707:   (4 >= ((CUM) + FUNCTION_ARG_SIZE ((MODE), (TYPE)))                   \
        !           708:    ? gen_rtx (REG,                                                     \
        !           709:              (MODE),                                                   \
        !           710:              ((MODE) == SFmode ?                                       \
        !           711:               (TARGET_SNAKE ? 56 + 2 * (CUM) : 36  + (CUM)) :          \
        !           712:               ((MODE) == DFmode ? ((CUM) ?                             \
        !           713:                                    (TARGET_SNAKE ? 62 : 39) :          \
        !           714:                                    (TARGET_SNAKE ? 58 : 37)) :         \
        !           715:                (27 - (CUM) - FUNCTION_ARG_SIZE ((MODE), (TYPE))))))    \
        !           716:    : 0)
        !           717: 
        !           718: /* Define where a function finds its arguments.
        !           719:    This would be different from FUNCTION_ARG if we had register windows.  */
        !           720: 
        !           721: #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED)  \
        !           722:   FUNCTION_ARG (CUM, MODE, TYPE, NAMED)
        !           723: 
        !           724: /* For an arg passed partly in registers and partly in memory,
        !           725:    this is the number of registers used.
        !           726:    For args passed entirely in registers or entirely in memory, zero.  */
        !           727: 
        !           728: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0
        !           729: 
        !           730: /* If defined, a C expression that gives the alignment boundary, in
        !           731:    bits, of an argument with the specified mode and type.  If it is
        !           732:    not defined,  `PARM_BOUNDARY' is used for all arguments.  */
        !           733: 
        !           734: #define FUNCTION_ARG_BOUNDARY(MODE, TYPE)                              \
        !           735:   (((TYPE) != 0)                                                       \
        !           736:        ? ((TYPE_ALIGN(TYPE) <= PARM_BOUNDARY)                          \
        !           737:                ? PARM_BOUNDARY                                         \
        !           738:                : TYPE_ALIGN(TYPE))                                     \
        !           739:        : ((GET_MODE_ALIGNMENT(MODE) <= PARM_BOUNDARY)                  \
        !           740:                ? PARM_BOUNDARY                                         \
        !           741:                : GET_MODE_ALIGNMENT(MODE)))
        !           742: 
        !           743: /* Arguments larger than eight bytes are passed by invisible reference */
        !           744: 
        !           745: #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED)         \
        !           746:   ((TYPE) ? int_size_in_bytes (TYPE) > 8 : GET_MODE_SIZE (MODE) > 8)
        !           747: 
        !           748: extern struct rtx_def *hppa_compare_op0, *hppa_compare_op1;
        !           749: extern enum cmp_type hppa_branch_type;
        !           750: 
        !           751: /* Output the label for a function definition.  */
        !           752: #ifdef hpux8
        !           753: #define ASM_DOUBLE_ARG_DESCRIPTORS(FILE, ARG0, ARG1)   \
        !           754:   do { fprintf (FILE, ",ARGW%d=FR", (ARG0));           \
        !           755:        fprintf (FILE, ",ARGW%d=FU", (ARG1));} while (0)
        !           756: #else
        !           757: #define ASM_DOUBLE_ARG_DESCRIPTORS(FILE, ARG0, ARG1)   \
        !           758:   do { fprintf (FILE, ",ARGW%d=FU", (ARG0));           \
        !           759:        fprintf (FILE, ",ARGW%d=FR", (ARG1));} while (0)
        !           760: #endif
        !           761: 
        !           762: #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
        !           763:     do { tree fntype = DECL_RESULT (DECL);                             \
        !           764:         tree tree_type = TREE_TYPE (DECL);                             \
        !           765:         tree parm;                                                     \
        !           766:         int i;                                                         \
        !           767:         fputs ("\t.EXPORT ", FILE); assemble_name (FILE, NAME);        \
        !           768:         fputs (",PRIV_LEV=3", FILE);                                   \
        !           769:         for (parm = DECL_ARGUMENTS (DECL), i = 0; parm && i < 4;       \
        !           770:              parm = TREE_CHAIN (parm), i++)                            \
        !           771:           {                                                            \
        !           772:             if (TYPE_MODE (DECL_ARG_TYPE (parm)) == SFmode)            \
        !           773:               fprintf (FILE, ",ARGW%d=FR", i);                         \
        !           774:             else if (TYPE_MODE (DECL_ARG_TYPE (parm)) == DFmode)       \
        !           775:               {                                                        \
        !           776:                 if (i == 0 || i == 2)                                  \
        !           777:                   {                                                    \
        !           778:                     ASM_DOUBLE_ARG_DESCRIPTORS (FILE, i++, i);         \
        !           779:                   }                                                    \
        !           780:                 else if (i == 1)                                       \
        !           781:                   {                                                    \
        !           782:                     ASM_DOUBLE_ARG_DESCRIPTORS (FILE, ++i, ++i);       \
        !           783:                   }                                                    \
        !           784:               }                                                        \
        !           785:             else                                                       \
        !           786:               fprintf (FILE, ",ARGW%d=GR", i);                         \
        !           787:           }                                                            \
        !           788:           /* anonymous args */                                         \
        !           789:           if (TYPE_ARG_TYPES (tree_type) != 0                          \
        !           790:               && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (tree_type)))  \
        !           791:                   != void_type_node))                                  \
        !           792:             {                                                          \
        !           793:               for (; i < 4; i++)                                       \
        !           794:                 fprintf (FILE, ",ARGW%d=GR", i);                       \
        !           795:             }                                                          \
        !           796:           if (TYPE_MODE (fntype) == DFmode)                            \
        !           797:             fprintf (FILE, ",RTNVAL=FR");                              \
        !           798:           else if (TYPE_MODE (fntype) == SFmode)                       \
        !           799:             fprintf (FILE, ",RTNVAL=FU");                              \
        !           800:           else if (fntype != void_type_node)                           \
        !           801:             fprintf (FILE, ",RTNVAL=GR");                              \
        !           802:           fputs ("\n", FILE);                                          \
        !           803:           ASM_OUTPUT_LABEL (FILE, NAME);} while (0)
        !           804: 
        !           805: /* Two views of the size of the current frame.  */
        !           806: extern int actual_fsize;
        !           807: extern int apparent_fsize;
        !           808: 
        !           809: /* This macro generates the assembly code for function entry.
        !           810:    FILE is a stdio stream to output the code to.
        !           811:    SIZE is an int: how many units of temporary storage to allocate.
        !           812:    Refer to the array `regs_ever_live' to determine which registers
        !           813:    to save; `regs_ever_live[I]' is nonzero if register number I
        !           814:    is ever used in the function.  This macro is responsible for
        !           815:    knowing which registers should not be saved even if used.  */
        !           816: 
        !           817: /* On SPARC, move-double insns between fpu and cpu need an 8-byte block
        !           818:    of memory.  If any fpu reg is used in the function, we allocate
        !           819:    such a block here, at the bottom of the frame, just in case it's needed.
        !           820: 
        !           821:    If this function is a leaf procedure, then we may choose not
        !           822:    to do a "save" insn.  The decision about whether or not
        !           823:    to do this is made in regclass.c.  */
        !           824: 
        !           825: #define FUNCTION_PROLOGUE(FILE, SIZE) \
        !           826:   output_function_prologue (FILE, SIZE, leaf_function)
        !           827: 
        !           828: /* Output assembler code to FILE to increment profiler label # LABELNO
        !           829:    for profiling a function entry.
        !           830: 
        !           831:    Because HPUX _mcount is so different, we actually emit the
        !           832:    profiling code in function_prologue. This just stores LABELNO for
        !           833:    that. */
        !           834: 
        !           835: #ifdef hp800                   /* Don't have the proper libraries yet */
        !           836: #define FUNCTION_PROFILER(FILE, LABELNO) {}
        !           837: #else
        !           838: #define PROFILE_BEFORE_PROLOGUE
        !           839: #define FUNCTION_PROFILER(FILE, LABELNO) \
        !           840: { extern int hp_profile_labelno; hp_profile_labelno = (LABELNO);}
        !           841: #endif
        !           842: 
        !           843: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
        !           844:    the stack pointer does not matter.  The value is tested only in
        !           845:    functions that have frame pointers.
        !           846:    No definition is equivalent to always zero.  */
        !           847: 
        !           848: extern int may_call_alloca;
        !           849: extern int current_function_pretend_args_size;
        !           850: 
        !           851: #define EXIT_IGNORE_STACK      \
        !           852:  (get_frame_size () != 0       \
        !           853:   || current_function_calls_alloca || current_function_outgoing_args_size)
        !           854: 
        !           855: 
        !           856: /* This macro generates the assembly code for function exit,
        !           857:    on machines that need it.  If FUNCTION_EPILOGUE is not defined
        !           858:    then individual return instructions are generated for each
        !           859:    return statement.  Args are same as for FUNCTION_PROLOGUE.
        !           860: 
        !           861:    The function epilogue should not depend on the current stack pointer!
        !           862:    It should use the frame pointer only.  This is mandatory because
        !           863:    of alloca; we also take advantage of it to omit stack adjustments
        !           864:    before returning.  */
        !           865: 
        !           866: /* This declaration is needed due to traditional/ANSI
        !           867:    incompatibilities which cannot be #ifdefed away
        !           868:    because they occur inside of macros.  Sigh.  */
        !           869: extern union tree_node *current_function_decl;
        !           870: 
        !           871: #define FUNCTION_EPILOGUE(FILE, SIZE)                  \
        !           872:   output_function_epilogue (FILE, SIZE, leaf_function)
        !           873: #define DELAY_SLOTS_FOR_EPILOGUE 1
        !           874: #define ELIGIBLE_FOR_EPILOGUE_DELAY(trial, slots_filled)       \
        !           875:   eligible_for_epilogue_delay (trial, slots_filled)
        !           876: 
        !           877: /* Output assembler code for a block containing the constant parts
        !           878:    of a trampoline, leaving space for the variable parts.  */
        !           879: 
        !           880: #define TRAMPOLINE_TEMPLATE(FILE) {}
        !           881: 
        !           882: /* Length in units of the trampoline for entering a nested function.  */
        !           883: 
        !           884: #define TRAMPOLINE_SIZE 0
        !           885: 
        !           886: /* Emit RTL insns to initialize the variable parts of a trampoline.
        !           887:    FNADDR is an RTX for the address of the function's pure code.
        !           888:    CXT is an RTX for the static chain value for the function.
        !           889: 
        !           890:    This takes 16 insns: 2 shifts & 2 ands (to split up addresses), 4 sethi
        !           891:    (to load in opcodes), 4 iors (to merge address and opcodes), and 4 writes
        !           892:    (to store insns).  This is a bit excessive.  Perhaps a different
        !           893:    mechanism would be better here.  */
        !           894: #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) {}
        !           895: 
        !           896: /* Emit code for a call to builtin_saveregs.  We must emit USE insns which
        !           897:    reference the 4 integer arg registers and 4 fp arg registers.
        !           898:    Ordinarily they are not call used registers, but they are for
        !           899:    _builtin_saveregs, so we must make this explicit.  */
        !           900: 
        !           901: 
        !           902: #define EXPAND_BUILTIN_SAVEREGS(ARGLIST)                               \
        !           903:   (emit_insn (gen_rtx (USE, VOIDmode, gen_rtx (REG, TImode, 23))),     \
        !           904:    (TARGET_SNAKE ?                                                     \
        !           905:     (emit_insn (gen_rtx (USE, VOIDmode, gen_rtx (REG, DFmode, 56))),   \
        !           906:      emit_insn (gen_rtx (USE, VOIDmode, gen_rtx (REG, DFmode, 58))),   \
        !           907:      emit_insn (gen_rtx (USE, VOIDmode, gen_rtx (REG, DFmode, 60))),   \
        !           908:      emit_insn (gen_rtx (USE, VOIDmode, gen_rtx (REG, DFmode, 62)))) : \
        !           909:     (emit_insn (gen_rtx (USE, VOIDmode, gen_rtx (REG, DFmode, 36))),   \
        !           910:      emit_insn (gen_rtx (USE, VOIDmode, gen_rtx (REG, DFmode, 37))),   \
        !           911:      emit_insn (gen_rtx (USE, VOIDmode, gen_rtx (REG, DFmode, 38))),   \
        !           912:      emit_insn (gen_rtx (USE, VOIDmode, gen_rtx (REG, DFmode, 39))))))
        !           913: 
        !           914: 
        !           915: 
        !           916: /* Addressing modes, and classification of registers for them.  */
        !           917: 
        !           918: #define HAVE_POST_INCREMENT
        !           919: #define HAVE_POST_DECREMENT
        !           920: 
        !           921: #define HAVE_PRE_DECREMENT
        !           922: #define HAVE_PRE_INCREMENT
        !           923: 
        !           924: /* Macros to check register numbers against specific register classes.  */
        !           925: 
        !           926: /* These assume that REGNO is a hard or pseudo reg number.
        !           927:    They give nonzero only if REGNO is a hard reg of the suitable class
        !           928:    or a pseudo reg currently allocated to a suitable hard reg.
        !           929:    Since they use reg_renumber, they are safe only once reg_renumber
        !           930:    has been allocated, which happens in local-alloc.c.  */
        !           931: 
        !           932: #define REGNO_OK_FOR_INDEX_P(REGNO) \
        !           933:   ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32)
        !           934: #define REGNO_OK_FOR_BASE_P(REGNO)  \
        !           935:   ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32)
        !           936: #define REGNO_OK_FOR_FP_P(REGNO) \
        !           937:   (((REGNO) >= 32 || reg_renumber[REGNO] >= 32)\
        !           938:    && ((REGNO) <= 111 || reg_renumber[REGNO] <= 111))
        !           939: 
        !           940: /* Now macros that check whether X is a register and also,
        !           941:    strictly, whether it is in a specified class.
        !           942: 
        !           943:    These macros are specific to the the hp9k800, and may be used only
        !           944:    in code for printing assembler insns and in conditions for
        !           945:    define_optimization.  */
        !           946: 
        !           947: /* 1 if X is an fp register.  */
        !           948: 
        !           949: #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X)))
        !           950: 
        !           951: /* Maximum number of registers that can appear in a valid memory address.  */
        !           952: 
        !           953: #define MAX_REGS_PER_ADDRESS 2
        !           954: 
        !           955: /* Recognize any constant value that is a valid address.  */
        !           956: 
        !           957: #define CONSTANT_ADDRESS_P(X)  CONSTANT_P (X)
        !           958: 
        !           959: /* Nonzero if the constant value X is a legitimate general operand.
        !           960:    It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE.  */
        !           961: 
        !           962: /*#define LEGITIMATE_CONSTANT_P(X) (1)*/
        !           963: #define LEGITIMATE_CONSTANT_P(X)               \
        !           964:  (GET_CODE (X) != CONST_DOUBLE)
        !           965: 
        !           966: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
        !           967:    and check its validity for a certain class.
        !           968:    We have two alternate definitions for each of them.
        !           969:    The usual definition accepts all pseudo regs; the other rejects
        !           970:    them unless they have been allocated suitable hard regs.
        !           971:    The symbol REG_OK_STRICT causes the latter definition to be used.
        !           972: 
        !           973:    Most source files want to accept pseudo regs in the hope that
        !           974:    they will get allocated to the class that the insn wants them to be in.
        !           975:    Source files for reload pass need to be strict.
        !           976:    After reload, it makes no difference, since pseudo regs have
        !           977:    been eliminated by then.  */
        !           978: 
        !           979: /* Optional extra constraints for this machine. Borrowed from tm-sparc.h.
        !           980: 
        !           981:    For the HPPA, `Q' means that this is a memory operand but not a
        !           982:    symbolic memory operand.  Note that an unassigned pseudo register
        !           983:    is such a memory operand.  Needed because reload will generate
        !           984:    these things in insns and then not re-recognize the insns, causing
        !           985:    constrain_operands to fail.
        !           986: 
        !           987:    `R' handles the LO_SUM which can be an address for `Q'.
        !           988: 
        !           989:    `S' handles constraints for calls.
        !           990: 
        !           991:    `T' is for fp load and store addresses.*/
        !           992: 
        !           993: #ifndef REG_OK_STRICT
        !           994: 
        !           995: /* Nonzero if X is a hard reg that can be used as an index
        !           996:    or if it is a pseudo reg.  */
        !           997: #define REG_OK_FOR_INDEX_P(X) ((unsigned) REGNO (X) - 32 >= 32)
        !           998: /* Nonzero if X is a hard reg that can be used as a base reg
        !           999:    or if it is a pseudo reg.  */
        !          1000: #define REG_OK_FOR_BASE_P(X) ((unsigned) REGNO (X) - 32 >= 32)
        !          1001: 
        !          1002: #define EXTRA_CONSTRAINT(OP, C)                                \
        !          1003:   ((C) == 'Q' ?                                                \
        !          1004:    ((GET_CODE (OP) == MEM                              \
        !          1005:      && memory_address_p (GET_MODE (OP), XEXP (OP, 0)) \
        !          1006:      && ! symbolic_memory_operand (OP, VOIDmode)))     \
        !          1007:    : ((C) == 'R' ?                                     \
        !          1008:       (GET_CODE (OP) == LO_SUM                         \
        !          1009:        && GET_CODE (XEXP (OP, 0)) == REG               \
        !          1010:        && REG_OK_FOR_BASE_P (XEXP (OP, 0)))            \
        !          1011:       : ((C) == 'S'                                    \
        !          1012:         ? CONSTANT_P (OP) || memory_address_p (Pmode, OP)\
        !          1013:         : ((C) == 'T' ? short_memory_operand (OP, VOIDmode) : 0))))\
        !          1014: 
        !          1015: 
        !          1016: #else
        !          1017: 
        !          1018: /* Nonzero if X is a hard reg that can be used as an index.  */
        !          1019: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
        !          1020: /* Nonzero if X is a hard reg that can be used as a base reg.  */
        !          1021: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
        !          1022: 
        !          1023: #define EXTRA_CONSTRAINT(OP, C)                                \
        !          1024:   (((C) == 'Q' || (C) == 'T') ?                                \
        !          1025:    (GET_CODE (OP) == REG ?                             \
        !          1026:     (REGNO (OP) >= FIRST_PSEUDO_REGISTER               \
        !          1027:      && reg_renumber[REGNO (OP)] < 0)                  \
        !          1028:     : GET_CODE (OP) == MEM)                            \
        !          1029:    : ((C) == 'R' ?                                     \
        !          1030:       (GET_CODE (OP) == LO_SUM                         \
        !          1031:        && GET_CODE (XEXP (OP, 0)) == REG               \
        !          1032:        && REG_OK_FOR_BASE_P (XEXP (OP, 0)))            \
        !          1033:       : (CONSTANT_P (OP)                               \
        !          1034:            || (GET_CODE (OP) == REG && reg_renumber[REGNO (OP)] > 0)\
        !          1035:            || strict_memory_address_p (Pmode, OP))))
        !          1036: 
        !          1037: #endif
        !          1038: 
        !          1039: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
        !          1040:    that is a valid memory address for an instruction.
        !          1041:    The MODE argument is the machine mode for the MEM expression
        !          1042:    that wants to use this address.
        !          1043: 
        !          1044:    On the hp9k800, the actual legitimate addresses must be
        !          1045:    REG+REG, REG+(REG*SCALE) or REG+SMALLINT.
        !          1046:    But we can treat a SYMBOL_REF as legitimate if it is part of this
        !          1047:    function's constant-pool, because such addresses can actually
        !          1048:    be output as REG+SMALLINT.  */
        !          1049: 
        !          1050: #define VAL_5_BITS_P(X) ((unsigned)(X) + 0x10 < 0x20)
        !          1051: #define INT_5_BITS(X) VAL_5_BITS_P (INTVAL (X))
        !          1052: 
        !          1053: #define VAL_U5_BITS_P(X) ((unsigned)(X) < 0x20)
        !          1054: #define INT_U5_BITS(X) VAL_U5_BITS_P (INTVAL (X))
        !          1055: 
        !          1056: #define VAL_11_BITS_P(X) ((unsigned)(X) + 0x400 < 0x800)
        !          1057: #define INT_11_BITS(X) VAL_11_BITS_P (INTVAL (X))
        !          1058: 
        !          1059: #define VAL_14_BITS_P(X) ((unsigned)(X) + 0x2000 < 0x4000)
        !          1060: #define INT_14_BITS(X) VAL_14_BITS_P (INTVAL (X))
        !          1061: 
        !          1062: #define FITS_14_BITS(X)        \
        !          1063:    (GET_CODE (X) == CONST_INT && INT_14_BITS (X))
        !          1064: 
        !          1065: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)  \
        !          1066: {                                                      \
        !          1067:   if (REG_P (X) && REG_OK_FOR_BASE_P (X)               \
        !          1068:       || ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_DEC         \
        !          1069:           || GET_CODE (X) == PRE_INC || GET_CODE (X) == POST_INC)      \
        !          1070:           && REG_P (XEXP (X, 0))                       \
        !          1071:           && REG_OK_FOR_BASE_P (XEXP (X, 0))))         \
        !          1072:     goto ADDR;                                         \
        !          1073:   else if (GET_CODE (X) == PLUS)                       \
        !          1074:     {                                                  \
        !          1075:       rtx base = 0, index;                             \
        !          1076:       if (flag_pic && XEXP (X, 0) == pic_offset_table_rtx)\
        !          1077:        {                                               \
        !          1078:          if (GET_CODE (XEXP (X, 1)) == REG             \
        !          1079:              && REG_OK_FOR_BASE_P (XEXP (X, 1)))       \
        !          1080:            goto ADDR;                                  \
        !          1081:          else if (flag_pic == 1                        \
        !          1082:                   && GET_CODE (XEXP (X, 1)) != REG     \
        !          1083:                   && GET_CODE (XEXP (X, 1)) != LO_SUM  \
        !          1084:                   && GET_CODE (XEXP (X, 1)) != MEM)    \
        !          1085:            goto ADDR;                                  \
        !          1086:        }                                               \
        !          1087:       else if (REG_P (XEXP (X, 0))                     \
        !          1088:          && REG_OK_FOR_BASE_P (XEXP (X, 0)))           \
        !          1089:        base = XEXP (X, 0), index = XEXP (X, 1);        \
        !          1090:       else if (REG_P (XEXP (X, 1))                     \
        !          1091:               && REG_OK_FOR_BASE_P (XEXP (X, 1)))      \
        !          1092:        base = XEXP (X, 1), index = XEXP (X, 0);        \
        !          1093:       if (base != 0)                                   \
        !          1094:        if (GET_CODE (index) == CONST_INT               \
        !          1095:            && ((INT_14_BITS (index) && (MODE) != SFmode && (MODE) != DFmode) \
        !          1096:                || INT_5_BITS (index)))                 \
        !          1097:          goto ADDR;                                    \
        !          1098:     }                                                  \
        !          1099:   else if (GET_CODE (X) == LO_SUM                      \
        !          1100:           && GET_CODE (XEXP (X, 0)) == REG             \
        !          1101:           && REG_OK_FOR_BASE_P (XEXP (X, 0))           \
        !          1102:           && CONSTANT_P (XEXP (X, 1))                  \
        !          1103:           && (MODE) != SFmode                          \
        !          1104:           && (MODE) != DFmode)                         \
        !          1105:     goto ADDR;                                         \
        !          1106:   else if (GET_CODE (X) == LO_SUM                      \
        !          1107:           && GET_CODE (XEXP (X, 0)) == SUBREG          \
        !          1108:           && GET_CODE (SUBREG_REG (XEXP (X, 0))) == REG\
        !          1109:           && REG_OK_FOR_BASE_P (SUBREG_REG (XEXP (X, 0)))\
        !          1110:           && CONSTANT_P (XEXP (X, 1))                  \
        !          1111:           && (MODE) != SFmode                          \
        !          1112:           && (MODE) != DFmode)                         \
        !          1113:     goto ADDR;                                         \
        !          1114:   else if (GET_CODE (X) == LABEL_REF                   \
        !          1115:           || (GET_CODE (X) == CONST_INT                \
        !          1116:               && INT_14_BITS (X)))                     \
        !          1117:     goto ADDR;                                         \
        !          1118: }
        !          1119: 
        !          1120: /* Try machine-dependent ways of modifying an illegitimate address
        !          1121:    to be legitimate.  If we find one, return the new, valid address.
        !          1122:    This macro is used in only one place: `memory_address' in explow.c.
        !          1123: 
        !          1124:    OLDX is the address as it was before break_out_memory_refs was called.
        !          1125:    In some cases it is useful to look at this to decide what needs to be done.
        !          1126: 
        !          1127:    MODE and WIN are passed so that this macro can use
        !          1128:    GO_IF_LEGITIMATE_ADDRESS.
        !          1129: 
        !          1130:    It is always safe for this macro to do nothing.  It exists to recognize
        !          1131:    opportunities to optimize the output.  */
        !          1132: 
        !          1133: /* On the hp9k800, change REG+N into REG+REG, and REG+(X*Y) into REG+REG.  */
        !          1134: 
        !          1135: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN)    \
        !          1136: { if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1)))        \
        !          1137:     (X) = gen_rtx (PLUS, SImode, XEXP (X, 0),                  \
        !          1138:                   copy_to_mode_reg (SImode, XEXP (X, 1)));     \
        !          1139:   if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0)))        \
        !          1140:     (X) = gen_rtx (PLUS, SImode, XEXP (X, 1),                  \
        !          1141:                   copy_to_mode_reg (SImode, XEXP (X, 0)));     \
        !          1142:   if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT)  \
        !          1143:     (X) = gen_rtx (PLUS, SImode, XEXP (X, 1),                  \
        !          1144:                   force_operand (XEXP (X, 0), 0));             \
        !          1145:   if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT)  \
        !          1146:     (X) = gen_rtx (PLUS, SImode, XEXP (X, 0),                  \
        !          1147:                   force_operand (XEXP (X, 1), 0));             \
        !          1148:   if (memory_address_p (MODE, X))                              \
        !          1149:     goto WIN;                                                  \
        !          1150:   if (flag_pic) (X) = legitimize_pic_address (X, MODE, gen_reg_rtx (Pmode));\
        !          1151:   else if ((GET_CODE (X) == SYMBOL_REF & read_only_operand (X))        \
        !          1152:            || GET_CODE (X) == CONST || GET_CODE (X) == LABEL_REF)\
        !          1153:     (X) = gen_rtx (LO_SUM, Pmode,                              \
        !          1154:                   copy_to_mode_reg (Pmode, gen_rtx (HIGH, Pmode, X)), X); \
        !          1155:   else if (GET_CODE (X) == SYMBOL_REF)                         \
        !          1156:     (X) = gen_rtx (LO_SUM, Pmode,                              \
        !          1157:                   copy_to_mode_reg (Pmode,                     \
        !          1158:                                     gen_rtx (PLUS, Pmode,      \
        !          1159:                                              copy_to_mode_reg (Pmode,\
        !          1160:                                                                gen_rtx (HIGH, Pmode, X)),\
        !          1161:                                              gen_rtx (REG, Pmode, 27))),\
        !          1162:                   X);                                          \
        !          1163:   if (memory_address_p (MODE, X))                              \
        !          1164:     goto WIN;}
        !          1165: 
        !          1166: /* Go to LABEL if ADDR (a legitimate address expression)
        !          1167:    has an effect that depends on the machine mode it is used for.  */
        !          1168: 
        !          1169: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)       \
        !          1170:   if (GET_CODE (ADDR) == PRE_DEC       \
        !          1171:       || GET_CODE (ADDR) == POST_DEC   \
        !          1172:       || GET_CODE (ADDR) == PRE_INC    \
        !          1173:       || GET_CODE (ADDR) == POST_INC)  \
        !          1174:     goto LABEL
        !          1175: 
        !          1176: /* Define this macro if references to a symbol must be treated
        !          1177:    differently depending on something about the variable or
        !          1178:    function named by the symbol (such as what section it is in).
        !          1179: 
        !          1180:    The macro definition, if any, is executed immediately after the
        !          1181:    rtl for DECL has been created and stored in `DECL_RTL (DECL)'. 
        !          1182:    The value of the rtl will be a `mem' whose address is a
        !          1183:    `symbol_ref'.
        !          1184: 
        !          1185:    The usual thing for this macro to do is to a flag in the
        !          1186:    `symbol_ref' (such as `SYMBOL_REF_FLAG') or to store a modified
        !          1187:    name string in the `symbol_ref' (if one bit is not enough
        !          1188:    information).
        !          1189: 
        !          1190:    On the PA-RISC we use this to indicate if a symbol is in text or
        !          1191:    data space.*/
        !          1192: 
        !          1193: #define ENCODE_SECTION_INFO(DECL)\
        !          1194: do                                                                     \
        !          1195:   {                                                                    \
        !          1196:     if (TREE_CODE (DECL) == FUNCTION_DECL)                             \
        !          1197:       SYMBOL_REF_FLAG (XEXP (DECL_RTL (DECL), 0)) = 1;                 \
        !          1198:     else                                                               \
        !          1199:       {                                                                        \
        !          1200:        rtx decl_rtl = (*tree_code_type[(int)TREE_CODE (DECL)] == 'c') ?\
        !          1201:          TREE_CST_RTL (DECL) : DECL_RTL (DECL);                        \
        !          1202:        if (RTX_UNCHANGING_P (decl_rtl) && !MEM_VOLATILE_P (decl_rtl)   \
        !          1203:            && !flag_pic)                                               \
        !          1204:          SYMBOL_REF_FLAG (XEXP (decl_rtl, 0)) = 1;                     \
        !          1205:       }                                                                        \
        !          1206:   }                                                                    \
        !          1207: while (0)
        !          1208:   
        !          1209: 
        !          1210: /* Specify the machine mode that this machine uses
        !          1211:    for the index in the tablejump instruction.  */
        !          1212: #define CASE_VECTOR_MODE SImode
        !          1213: 
        !          1214: /* Define this if the tablejump instruction expects the table
        !          1215:    to contain offsets from the address of the table.
        !          1216:    Do not define this if the table should contain absolute addresses.  */
        !          1217: /* #define CASE_VECTOR_PC_RELATIVE */
        !          1218: 
        !          1219: /* Specify the tree operation to be used to convert reals to integers.  */
        !          1220: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
        !          1221: 
        !          1222: /* This is the kind of divide that is easiest to do in the general case.  */
        !          1223: #define EASY_DIV_EXPR TRUNC_DIV_EXPR
        !          1224: 
        !          1225: /* Define this as 1 if `char' should by default be signed; else as 0.  */
        !          1226: #define DEFAULT_SIGNED_CHAR 1
        !          1227: 
        !          1228: /* Max number of bytes we can move from memory to memory
        !          1229:    in one reasonably fast instruction.  */
        !          1230: #define MOVE_MAX 8
        !          1231: 
        !          1232: /* Define if normal loads of shorter-than-word items from memory clears
        !          1233:    the rest of the bigs in the register.  */
        !          1234: #define BYTE_LOADS_ZERO_EXTEND
        !          1235: 
        !          1236: /* Nonzero if access to memory by bytes is slow and undesirable.  */
        !          1237: #define SLOW_BYTE_ACCESS 1
        !          1238: 
        !          1239: /* Do not break .stabs pseudos into continuations.  */
        !          1240: #define DBX_CONTIN_LENGTH 0
        !          1241: 
        !          1242: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
        !          1243:    is done just by pretending it is already truncated.  */
        !          1244: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
        !          1245: 
        !          1246: /* We assume that the store-condition-codes instructions store 0 for false
        !          1247:    and some other value for true.  This is the value stored for true.  */
        !          1248: 
        !          1249: #define STORE_FLAG_VALUE 1
        !          1250: 
        !          1251: /* When a prototype says `char' or `short', really pass an `int'.  */
        !          1252: #define PROMOTE_PROTOTYPES
        !          1253: 
        !          1254: /* Specify the machine mode that pointers have.
        !          1255:    After generation of rtl, the compiler makes no further distinction
        !          1256:    between pointers and any other objects of this machine mode.  */
        !          1257: #define Pmode SImode
        !          1258: 
        !          1259: /* Add any extra modes needed to represent the condition code.
        !          1260: 
        !          1261:    HPPA floating comparisons produce condition codes. */
        !          1262: #define EXTRA_CC_MODES CCFPmode
        !          1263: 
        !          1264: /* Define the names for the modes specified above.  */
        !          1265: #define EXTRA_CC_NAMES "CCFP"
        !          1266: 
        !          1267: /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
        !          1268:    return the mode to be used for the comparison.  For floating-point, CCFPmode
        !          1269:    should be used.  CC_NOOVmode should be used when the first operand is a
        !          1270:    PLUS, MINUS, or NEG.  CCmode should be used when no special processing is
        !          1271:    needed.  */
        !          1272: #define SELECT_CC_MODE(OP,X) \
        !          1273:   (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT ? CCFPmode : CCmode)    \
        !          1274: 
        !          1275: /* A function address in a call instruction
        !          1276:    is a byte address (for indexing purposes)
        !          1277:    so give the MEM rtx a byte's mode.  */
        !          1278: #define FUNCTION_MODE SImode
        !          1279:   
        !          1280: /* Define this if addresses of constant functions
        !          1281:    shouldn't be put through pseudo regs where they can be cse'd.
        !          1282:    Desirable on machines where ordinary constants are expensive
        !          1283:    but a CALL with constant address is cheap.  */
        !          1284: #define NO_FUNCTION_CSE
        !          1285: 
        !          1286: /* Compute the cost of computing a constant rtl expression RTX
        !          1287:    whose rtx-code is CODE.  The body of this macro is a portion
        !          1288:    of a switch statement.  If the code is computed here,
        !          1289:    return it with a return statement.  Otherwise, break from the switch.  */
        !          1290: 
        !          1291: #define CONST_COSTS(RTX,CODE) \
        !          1292:   case CONST_INT:                                              \
        !          1293:     if (INTVAL (RTX) == 0) return 0;                           \
        !          1294:     if (INT_14_BITS (RTX)) return 1;                           \
        !          1295:   case CONST:                                                  \
        !          1296:   case LABEL_REF:                                              \
        !          1297:   case SYMBOL_REF:                                             \
        !          1298:     return 2;                                                  \
        !          1299:   case CONST_DOUBLE:                                           \
        !          1300:     return 4;
        !          1301: 
        !          1302: #define ADDRESS_COST(RTX) \
        !          1303:   (GET_CODE (RTX) == REG ? 1 : hppa_address_cost (RTX))
        !          1304: 
        !          1305: /* Compute extra cost of moving data between one register class
        !          1306:    and another.  */
        !          1307: #define REGISTER_MOVE_COST(CLASS1, CLASS2) \
        !          1308:   (((CLASS1 == FP_REGS && CLASS2 == GENERAL_REGS) \
        !          1309:     || (CLASS1 == GENERAL_REGS && CLASS2 == FP_REGS)) ? 6 : 2)
        !          1310: 
        !          1311: /* Conditional branches with empty delay slots have a length of two.  */
        !          1312: #define ADJUST_INSN_LENGTH(INSN, LENGTH)       \
        !          1313:   if (GET_CODE (INSN) == CALL_INSN                                     \
        !          1314:       || (GET_CODE (INSN) == JUMP_INSN && ! simplejump_p (insn)))      \
        !          1315:     LENGTH += 1;
        !          1316: 
        !          1317: /* Control the assembler format that we output.  */
        !          1318: 
        !          1319: /* Output at beginning of assembler file.  */
        !          1320: 
        !          1321: #define ASM_FILE_START(FILE) \
        !          1322: do { fprintf (FILE, "\t.SPACE $PRIVATE$\n\
        !          1323: \t.SUBSPA $DATA$,QUAD=1,ALIGN=8,ACCESS=31\n\
        !          1324: \t.SPACE $TEXT$\n\
        !          1325: \t.SUBSPA $LIT$,QUAD=0,ALIGN=8,ACCESS=44\n\
        !          1326: \t.SUBSPA $CODE$,QUAD=0,ALIGN=8,ACCESS=44,CODE_ONLY\n\
        !          1327: \t.IMPORT $global$,DATA\n\
        !          1328: \t.IMPORT $$dyncall,MILLICODE\n");\
        !          1329:      if (profile_flag)\
        !          1330:        fprintf (FILE, "\t.IMPORT __gcc_mcount, CODE\n");\
        !          1331:    } while (0)
        !          1332: 
        !          1333: /* Output to assembler file text saying following lines
        !          1334:    may contain character constants, extra white space, comments, etc.  */
        !          1335: 
        !          1336: #define ASM_APP_ON ""
        !          1337: 
        !          1338: /* Output to assembler file text saying following lines
        !          1339:    no longer contain unusual constructs.  */
        !          1340: 
        !          1341: #define ASM_APP_OFF ""
        !          1342: 
        !          1343: /* We don't yet know how to identify GCC to HP series 800.  */
        !          1344: #define ASM_IDENTIFY_GCC(FILE) fprintf (FILE, "; gcc_compiled.:\n")
        !          1345: 
        !          1346: /* Output before code.  */
        !          1347: 
        !          1348: #define TEXT_SECTION_ASM_OP "\t.SPACE $TEXT$\n\t.SUBSPA $CODE$\n"
        !          1349: 
        !          1350: /* Output before writable data.  */
        !          1351: 
        !          1352: #define DATA_SECTION_ASM_OP "\t.SPACE $PRIVATE$\n\t.SUBSPA $DATA$\n"
        !          1353: 
        !          1354: /* How to refer to registers in assembler output.
        !          1355:    This sequence is indexed by compiler's hard-register-number (see above).  */
        !          1356: 
        !          1357: #define REGISTER_NAMES \
        !          1358: {"0", "1", "2", "3", "4", "5", "6", "7", "8", "9",             \
        !          1359:  "10", "11", "12", "13", "14", "15", "16", "17", "18", "19",   \
        !          1360:  "20", "21", "22", "23", "24", "25", "26", "27", "28", "29",   \
        !          1361:  "30", "31",                                                   \
        !          1362:  "0", "1", "2", "3", "4", "5", "6", "7",                       \
        !          1363:  "8", "9", "10", "11", "12", "13", "14", "15",                 \
        !          1364:  "0", "0R", "1", "1R", "2", "2R", "3", "3R",                   \
        !          1365:  "4", "4R", "5", "5R", "6", "6R", "7", "7R",                   \
        !          1366:  "8", "8R", "9", "9R", "10", "10R", "11", "11R",               \
        !          1367:  "12", "12R", "13", "13R", "14", "14R", "15", "15R",           \
        !          1368:  "16", "16R", "17", "17R", "18", "18R", "19", "19R",           \
        !          1369:  "20", "20R", "21", "21R", "22", "22R", "23", "23R",           \
        !          1370:  "24", "24R", "25", "25R", "26", "26R", "27", "27R",           \
        !          1371:  "28", "28R", "29", "29R", "30", "30R", "31", "31R"}
        !          1372: 
        !          1373: /* How to renumber registers for dbx and gdb.  */
        !          1374: 
        !          1375: #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
        !          1376: 
        !          1377: /* This is how to output the definition of a user-level label named NAME,
        !          1378:    such as the label on a static function or variable NAME.  */
        !          1379: 
        !          1380: #define ASM_OUTPUT_LABEL(FILE, NAME)   \
        !          1381:   do { assemble_name (FILE, NAME); fputc ('\n', FILE); } while (0)
        !          1382: 
        !          1383: /* This is how to output a command to make the user-level label named NAME
        !          1384:    defined for reference from other files.  */
        !          1385: 
        !          1386: #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)  \
        !          1387:   do { fputs ("\t.IMPORT ", FILE);                             \
        !          1388:         assemble_name (FILE, NAME);                            \
        !          1389:        if (TREE_CODE (DECL) == VAR_DECL && ! TREE_READONLY (DECL))             \
        !          1390:         fputs (",DATA\n", FILE);                               \
        !          1391:        else                                                    \
        !          1392:         fputs (",CODE\n", FILE);                               \
        !          1393:      } while (0)
        !          1394: 
        !          1395: /* hpux ld doesn't output the object file name, or anything useful at
        !          1396:    all, to indicate the start of an object file's symbols. This screws
        !          1397:    up gdb, so we'll output this magic cookie at the end of an object
        !          1398:    file with debugging symbols */
        !          1399: 
        !          1400: #define ASM_FILE_END(FILE) \
        !          1401:   do { if (write_symbols == DBX_DEBUG)\
        !          1402:         { fputs (TEXT_SECTION_ASM_OP, FILE);\
        !          1403:           fputs (".stabs \"end_file.\",4,0,0,Ltext_end\nLtext_end:\n",\
        !          1404:                  (FILE));\
        !          1405:         }\
        !          1406:      } while (0)
        !          1407: 
        !          1408: /* The bogus HP assembler requires ALL external references to be 
        !          1409:    "imported", even library calls. They look a bit different, so
        !          1410:    here's this macro. */
        !          1411: 
        !          1412: #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, RTL) \
        !          1413:   do { fputs ("\t.IMPORT ", FILE);                                     \
        !          1414:        assemble_name (FILE, XSTR ((RTL), 0));                          \
        !          1415:        fputs (",CODE\n", FILE);                                                \
        !          1416:      } while (0)
        !          1417: 
        !          1418: #define ASM_GLOBALIZE_LABEL(FILE, NAME)                                        \
        !          1419:   do { fputs ("\t.EXPORT ", FILE); assemble_name (FILE, NAME);         \
        !          1420:        fputs ("\n", FILE);} while (0)
        !          1421: 
        !          1422: /* This is how to output a reference to a user-level label named NAME.
        !          1423:    `assemble_name' uses this.  */
        !          1424: 
        !          1425: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
        !          1426:   fprintf (FILE, "%s", NAME)
        !          1427: 
        !          1428: /* This is how to output an internal numbered label where
        !          1429:    PREFIX is the class of label and NUM is the number within the class.  */
        !          1430: 
        !          1431: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)     \
        !          1432:   fprintf (FILE, "%s$%04d\n", PREFIX, NUM)
        !          1433: 
        !          1434: /* This is how to store into the string LABEL
        !          1435:    the symbol_ref name of an internal numbered label where
        !          1436:    PREFIX is the class of label and NUM is the number within the class.
        !          1437:    This is suitable for output with `assemble_name'.  */
        !          1438: 
        !          1439: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)  \
        !          1440:   sprintf (LABEL, "*%s$%04d", PREFIX, NUM)
        !          1441: 
        !          1442: /* This is how to output an assembler line defining a `double' constant.  */
        !          1443: 
        !          1444: #define ASM_OUTPUT_DOUBLE(FILE,VALUE)  \
        !          1445:   do { union { double d; int i[2];} __u;       \
        !          1446:     __u.d = (VALUE);                           \
        !          1447:     fprintf (FILE, "\t; .double %.20e\n\t.word %d ; = 0x%x\n\t.word %d ; = 0x%x\n",    \
        !          1448:             __u.d, __u.i[0], __u.i[0], __u.i[1], __u.i[1]);    \
        !          1449:   } while (0)
        !          1450: 
        !          1451: /* This is how to output an assembler line defining a `float' constant.  */
        !          1452: 
        !          1453: #define ASM_OUTPUT_FLOAT(FILE,VALUE)  \
        !          1454:   do { union { float f; int i;} __u;           \
        !          1455:     __u.f = (VALUE);                           \
        !          1456:     fprintf (FILE, "\t; .float %.12e\n\t.word %d ; = 0x%x\n", __u.f, __u.i, __u.i); \
        !          1457:   } while (0)
        !          1458: 
        !          1459: /* This is how to output an assembler line defining an `int' constant.  */
        !          1460: 
        !          1461: #define ASM_OUTPUT_INT(FILE,VALUE)  \
        !          1462: ( fprintf (FILE, "\t.word "),                  \
        !          1463:   output_addr_const (FILE, (VALUE)),           \
        !          1464:   fprintf (FILE, "\n"))
        !          1465: 
        !          1466: /* Likewise for `short' and `char' constants.  */
        !          1467: 
        !          1468: #define ASM_OUTPUT_SHORT(FILE,VALUE)  \
        !          1469: ( fprintf (FILE, "\t.half "),                  \
        !          1470:   output_addr_const (FILE, (VALUE)),           \
        !          1471:   fprintf (FILE, "\n"))
        !          1472: 
        !          1473: #define ASM_OUTPUT_CHAR(FILE,VALUE)  \
        !          1474: ( fprintf (FILE, "\t.byte "),                  \
        !          1475:   output_addr_const (FILE, (VALUE)),           \
        !          1476:   fprintf (FILE, "\n"))
        !          1477: 
        !          1478: /* This is how to output an assembler line for a numeric constant byte.  */
        !          1479: 
        !          1480: #define ASM_OUTPUT_BYTE(FILE,VALUE)  \
        !          1481:   fprintf (FILE, "\t.byte 0x%x\n", (VALUE))
        !          1482: 
        !          1483: #define ASM_OUTPUT_ASCII(FILE, P, SIZE)  \
        !          1484:   output_ascii ((FILE), (P), (SIZE))
        !          1485: 
        !          1486: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO)  \
        !          1487:   fprintf (FILE, "\tstws,mb %s,4(0,30)\n", reg_names[REGNO])
        !          1488: 
        !          1489: /* This is how to output an insn to pop a register from the stack.
        !          1490:    It need not be very fast code.  */
        !          1491: 
        !          1492: #define ASM_OUTPUT_REG_POP(FILE,REGNO)  \
        !          1493:   fprintf (FILE, "\tldws,ma -4(0,30),%s\n", reg_names[REGNO])
        !          1494: 
        !          1495: /* This is how to output an element of a case-vector that is absolute.
        !          1496:    Note that this method makes filling these branch delay slots
        !          1497:    virtually impossible.  */
        !          1498: 
        !          1499: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
        !          1500:   fprintf (FILE, "\tb L$%04d\n\tnop\n", VALUE)
        !          1501: 
        !          1502: /* This is how to output an element of a case-vector that is relative.
        !          1503:    (the hp9k800 does not use such vectors,
        !          1504:    but we must define this macro anyway.)  */
        !          1505: 
        !          1506: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)  \
        !          1507:   fprintf (FILE, "\tword L%d-L%d\n", VALUE, REL)
        !          1508: 
        !          1509: /* This is how to output an assembler line
        !          1510:    that says to advance the location counter
        !          1511:    to a multiple of 2**LOG bytes.  */
        !          1512: 
        !          1513: #define ASM_OUTPUT_ALIGN(FILE,LOG)     \
        !          1514:     fprintf (FILE, "\t.align %d\n", (1<<(LOG)))
        !          1515: 
        !          1516: #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
        !          1517:   fprintf (FILE, "\t.blockz %d\n", (SIZE))
        !          1518: 
        !          1519: /* This says how to output an assembler line
        !          1520:    to define a global common symbol.  */
        !          1521: 
        !          1522: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)  \
        !          1523: ( data_section (),                                     \
        !          1524:   assemble_name ((FILE), (NAME)),                      \
        !          1525:   fputs ("\t.comm ", (FILE)),                          \
        !          1526:   fprintf ((FILE), "%d\n", (ROUNDED)))
        !          1527: 
        !          1528: /* This says how to output an assembler line
        !          1529:    to define a local common symbol.  */
        !          1530: 
        !          1531: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
        !          1532: ( data_section (),                                     \
        !          1533:   fprintf ((FILE), "\t.align %d\n", (SIZE) <= 4 ? 4 : 8),      \
        !          1534:   assemble_name ((FILE), (NAME)),                              \
        !          1535:   fprintf ((FILE), "\n\t.blockz %d\n", (ROUNDED)))
        !          1536: 
        !          1537: /* Store in OUTPUT a string (made with alloca) containing
        !          1538:    an assembler-name for a local static variable named NAME.
        !          1539:    LABELNO is an integer which is different for each call.  */
        !          1540: 
        !          1541: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
        !          1542: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 12),   \
        !          1543:   sprintf ((OUTPUT), "%s___%d", (NAME), (LABELNO)))
        !          1544: 
        !          1545: /* Define the parentheses used to group arithmetic operations
        !          1546:    in assembler code.  */
        !          1547: 
        !          1548: #define ASM_OPEN_PAREN "("
        !          1549: #define ASM_CLOSE_PAREN ")"
        !          1550: 
        !          1551: /* Define results of standard character escape sequences.  */
        !          1552: #define TARGET_BELL 007
        !          1553: #define TARGET_BS 010
        !          1554: #define TARGET_TAB 011
        !          1555: #define TARGET_NEWLINE 012
        !          1556: #define TARGET_VT 013
        !          1557: #define TARGET_FF 014
        !          1558: #define TARGET_CR 015
        !          1559: 
        !          1560: #define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \
        !          1561:   ((CHAR) == '@' || (CHAR) == '#' || (CHAR) == '*' || (CHAR) == '^')
        !          1562: 
        !          1563: /* Print operand X (an rtx) in assembler syntax to file FILE.
        !          1564:    CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
        !          1565:    For `%' followed by punctuation, CODE is the punctuation and X is null.
        !          1566: 
        !          1567:    On the hp9k800, the CODE can be `r', meaning this is a register-only operand
        !          1568:    and an immediate zero should be represented as `r0'.
        !          1569: 
        !          1570:    Several % codes are defined:
        !          1571:    O an operation
        !          1572:    C compare conditions
        !          1573:    N extract conditions
        !          1574:    M modifier to handle preincrement addressing for memory refs.
        !          1575:    F modifier to handle preincrement addressing for fp memory refs */
        !          1576: 
        !          1577: #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)
        !          1578: 
        !          1579: 
        !          1580: /* Print a memory address as an operand to reference that memory location.  */
        !          1581: 
        !          1582: #define PRINT_OPERAND_ADDRESS(FILE, ADDR)  \
        !          1583: { register rtx addr = ADDR;                                            \
        !          1584:   register rtx base;                                                   \
        !          1585:   int offset;                                                          \
        !          1586:   switch (GET_CODE (addr))                                             \
        !          1587:     {                                                                  \
        !          1588:     case REG:                                                          \
        !          1589:       fprintf (FILE, "0(0,%s)", reg_names [REGNO (addr)]);             \
        !          1590:       break;                                                           \
        !          1591:     case PLUS:                                                         \
        !          1592:       if (GET_CODE (XEXP (addr, 0)) == CONST_INT)                      \
        !          1593:        offset = INTVAL (XEXP (addr, 0)), base = XEXP (addr, 1);        \
        !          1594:       else if (GET_CODE (XEXP (addr, 1)) == CONST_INT)                 \
        !          1595:        offset = INTVAL (XEXP (addr, 1)), base = XEXP (addr, 0);        \
        !          1596:       else                                                             \
        !          1597:        abort ();                                                       \
        !          1598:       fprintf (FILE, "%d(0,%s)", offset, reg_names [REGNO (base)]);    \
        !          1599:       break;                                                           \
        !          1600:     case LO_SUM:                                                       \
        !          1601:       fputs ("R'", FILE);                                              \
        !          1602:       output_global_address (FILE, XEXP (addr, 1));                    \
        !          1603:       fputs ("(", FILE);                                               \
        !          1604:       output_operand (XEXP (addr, 0), 0);                              \
        !          1605:       fputs (")", FILE);                                               \
        !          1606:       break;                                                           \
        !          1607:     default:                                                           \
        !          1608:       output_addr_const (FILE, addr);                                  \
        !          1609:     }}
        !          1610: 
        !          1611: 
        !          1612: #define SMALL_INT(OP) INT_14_BITS (OP)
        !          1613: /* Define functions in out-sparc.c and used in insn-output.c.  */
        !          1614: 
        !          1615: extern char *output_move_double ();
        !          1616: extern char *output_fp_move_double ();
        !          1617: extern char *output_block_move ();
        !          1618: extern char *output_scc_insn ();
        !          1619: extern char *output_cbranch ();
        !          1620: extern char *output_return ();
        !          1621: extern char *output_floatsisf2 ();
        !          1622: extern char *output_floatsidf2 ();
        !          1623: extern char *output_mul_insn ();
        !          1624: extern char *output_div_insn ();
        !          1625: extern char *output_mod_insn ();
        !          1626: extern void output_arg_descriptor ();
        !          1627: extern void output_global_address ();
        !          1628: extern struct rtx_def *legitimize_pic_address ();

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