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

1.1     ! root        1: /* Definitions of target machine for GNU compiler, for Sun SPARC.
        !             2:    Copyright (C) 1987, 1988, 1989, 1992 Free Software Foundation, Inc.
        !             3:    Contributed by Michael Tiemann ([email protected]).
        !             4: 
        !             5: This file is part of GNU CC.
        !             6: 
        !             7: GNU CC is free software; you can redistribute it and/or modify
        !             8: it under the terms of the GNU General Public License as published by
        !             9: the Free Software Foundation; either version 2, or (at your option)
        !            10: any later version.
        !            11: 
        !            12: GNU CC is distributed in the hope that it will be useful,
        !            13: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            14: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            15: GNU General Public License for more details.
        !            16: 
        !            17: You should have received a copy of the GNU General Public License
        !            18: along with GNU CC; see the file COPYING.  If not, write to
        !            19: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            20: 
        !            21: /* Note that some other tm.h files include this one and then override
        !            22:    many of the definitions that relate to assembler syntax.  */
        !            23: 
        !            24: #define LIB_SPEC "%{!p:%{!pg:-lc}}%{p:-lc_p}%{pg:-lc_p} %{g:-lg}"
        !            25: 
        !            26: /* Provide required defaults for linker -e and -d switches.
        !            27:    Also, it is hard to debug with shared libraries,
        !            28:    so don't use them if going to debug.  */
        !            29: 
        !            30: #define LINK_SPEC "%{!e*:-e start} -dc -dp %{static:-Bstatic} %{assert*}"
        !            31: 
        !            32: /* Special flags to the Sun-4 assembler when using pipe for input.  */
        !            33: 
        !            34: #define ASM_SPEC " %{pipe:-} %{fpic:-k} %{fPIC:-k}"
        !            35: 
        !            36: /* Prevent error on `-dalign', `-sun4' and `-target sun4' options.  */
        !            37: /* Also, make it easy to specify interesting optimization options.  */
        !            38: 
        !            39: #define CC1_SPEC "%{dalign:-malign} %{sun4:} %{target:}"
        !            40: 
        !            41: #define PTRDIFF_TYPE "int"
        !            42: #define SIZE_TYPE "int"
        !            43: #define WCHAR_TYPE "short unsigned int"
        !            44: #define WCHAR_TYPE_SIZE 16
        !            45: 
        !            46: /* Omit frame pointer and enable caller-saves at high optimization levels.  */
        !            47:   
        !            48: #define OPTIMIZATION_OPTIONS(OPTIMIZE) \
        !            49: {                                                              \
        !            50:   if (OPTIMIZE >= 2)                                           \
        !            51:     {                                                          \
        !            52:       flag_omit_frame_pointer = 1;                             \
        !            53:       flag_caller_saves = 1;                                   \
        !            54:     }                                                          \
        !            55: }
        !            56: 
        !            57: /* These compiler options take an argument.  We ignore -target for now.  */
        !            58: 
        !            59: #define WORD_SWITCH_TAKES_ARG(STR)                             \
        !            60:  (!strcmp (STR, "Tdata") || !strcmp (STR, "include")           \
        !            61:   || !strcmp (STR, "imacros") || !strcmp (STR, "target")       \
        !            62:   || !strcmp (STR, "assert"))
        !            63: 
        !            64: /* Names to predefine in the preprocessor for this target machine.  */
        !            65: 
        !            66: #define CPP_PREDEFINES "-Dsparc -Dsun -Dunix"
        !            67: 
        !            68: /* Print subsidiary information on the compiler version in use.  */
        !            69: 
        !            70: #define TARGET_VERSION fprintf (stderr, " (sparc)");
        !            71: 
        !            72: /* Generate DBX debugging information.  */
        !            73: 
        !            74: #define DBX_DEBUGGING_INFO
        !            75: 
        !            76: /* Run-time compilation parameters selecting different hardware subsets.  */
        !            77: 
        !            78: extern int target_flags;
        !            79: 
        !            80: /* Nonzero if we should generate code to use the fpu.  */
        !            81: #define TARGET_FPU (target_flags & 1)
        !            82: 
        !            83: /* Nonzero if we should use FUNCTION_EPILOGUE.  Otherwise, we
        !            84:    use fast return insns, but lose some generality.  */
        !            85: #define TARGET_EPILOGUE (target_flags & 2)
        !            86: 
        !            87: /* Nonzero if we assume that all calls will fall within a 16MB
        !            88:    pc-relative range.  Useful with -fomit-frame-pointer.  */
        !            89: #define TARGET_TAIL_CALL (target_flags & 8)
        !            90: 
        !            91: /* Nonzero means that references to doublewords are guaranteed
        !            92:    aligned...if not, its a bug in the users program!  */
        !            93: #define TARGET_ALIGN (target_flags & 16)
        !            94: 
        !            95: /* Macro to define tables used to set the flags.
        !            96:    This is a list in braces of pairs in braces,
        !            97:    each pair being { "NAME", VALUE }
        !            98:    where VALUE is the bits to set or minus the bits to clear.
        !            99:    An empty string NAME is used to identify the default VALUE.  */
        !           100: 
        !           101: #define TARGET_SWITCHES  \
        !           102:   { {"fpu", 1},                        \
        !           103:     {"soft-float", -1},                \
        !           104:     {"epilogue", 2},           \
        !           105:     {"no-epilogue", -2},       \
        !           106:     {"tail-call", 8},          \
        !           107:     {"align", 16},             \
        !           108:    { "", TARGET_DEFAULT}}
        !           109: 
        !           110: #define TARGET_DEFAULT 3
        !           111: 
        !           112: /* target machine storage layout */
        !           113: 
        !           114: /* Define this if most significant bit is lowest numbered
        !           115:    in instructions that operate on numbered bit-fields.  */
        !           116: #define BITS_BIG_ENDIAN 1
        !           117: 
        !           118: /* Define this if most significant byte of a word is the lowest numbered.  */
        !           119: /* This is true on the SPARC.  */
        !           120: #define BYTES_BIG_ENDIAN 1
        !           121: 
        !           122: /* Define this if most significant word of a multiword number is the lowest
        !           123:    numbered.  */
        !           124: /* Doubles are stored in memory with the high order word first.  This
        !           125:    matters when cross-compiling.  */
        !           126: #define WORDS_BIG_ENDIAN 1
        !           127: 
        !           128: /* number of bits in an addressible storage unit */
        !           129: #define BITS_PER_UNIT 8
        !           130: 
        !           131: /* Width in bits of a "word", which is the contents of a machine register.
        !           132:    Note that this is not necessarily the width of data type `int';
        !           133:    if using 16-bit ints on a 68000, this would still be 32.
        !           134:    But on a machine with 16-bit registers, this would be 16.  */
        !           135: #define BITS_PER_WORD 32
        !           136: #define MAX_BITS_PER_WORD 32
        !           137: 
        !           138: /* Width of a word, in units (bytes).  */
        !           139: #define UNITS_PER_WORD 4
        !           140: 
        !           141: /* Width in bits of a pointer.
        !           142:    See also the macro `Pmode' defined below.  */
        !           143: #define POINTER_SIZE 32
        !           144: 
        !           145: /* Allocation boundary (in *bits*) for storing arguments in argument list.  */
        !           146: #define PARM_BOUNDARY 32
        !           147: 
        !           148: /* Boundary (in *bits*) on which stack pointer should be aligned.  */
        !           149: #define STACK_BOUNDARY 64
        !           150: 
        !           151: /* Allocation boundary (in *bits*) for the code of a function.  */
        !           152: #define FUNCTION_BOUNDARY 32
        !           153: 
        !           154: /* Alignment of field after `int : 0' in a structure.  */
        !           155: #define EMPTY_FIELD_BOUNDARY 32
        !           156: 
        !           157: /* Every structure's size must be a multiple of this.  */
        !           158: #define STRUCTURE_SIZE_BOUNDARY 8
        !           159: 
        !           160: /* A bitfield declared as `int' forces `int' alignment for the struct.  */
        !           161: #define PCC_BITFIELD_TYPE_MATTERS 1
        !           162: 
        !           163: /* No data type wants to be aligned rounder than this.  */
        !           164: #define BIGGEST_ALIGNMENT 64
        !           165: 
        !           166: /* Make strings word-aligned so strcpy from constants will be faster.  */
        !           167: #define CONSTANT_ALIGNMENT(EXP, ALIGN)  \
        !           168:   (TREE_CODE (EXP) == STRING_CST       \
        !           169:    && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
        !           170: 
        !           171: /* Make arrays of chars word-aligned for the same reasons.  */
        !           172: #define DATA_ALIGNMENT(TYPE, ALIGN)            \
        !           173:   (TREE_CODE (TYPE) == ARRAY_TYPE              \
        !           174:    && TYPE_MODE (TREE_TYPE (TYPE)) == QImode   \
        !           175:    && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
        !           176: 
        !           177: /* Define this if move instructions will actually fail to work
        !           178:    when given unaligned data.  */
        !           179: #define STRICT_ALIGNMENT
        !           180: 
        !           181: /* Things that must be doubleword aligned cannot go in the text section,
        !           182:    because the linker fails to align the text section enough!
        !           183:    Put them in the data section.  */
        !           184: #define MAX_TEXT_ALIGN 32
        !           185: 
        !           186: #define SELECT_SECTION(T,RELOC)                                                \
        !           187: {                                                                      \
        !           188:   if (TREE_CODE (T) == VAR_DECL)                                       \
        !           189:     {                                                                  \
        !           190:       if (TREE_READONLY (T) && ! TREE_SIDE_EFFECTS (T)                 \
        !           191:          && DECL_ALIGN (T) <= MAX_TEXT_ALIGN                           \
        !           192:          && ! (flag_pic && (RELOC)))                                   \
        !           193:        text_section ();                                                \
        !           194:       else                                                             \
        !           195:        data_section ();                                                \
        !           196:     }                                                                  \
        !           197:   else if (TREE_CODE (T) == CONSTRUCTOR)                               \
        !           198:     {                                                                  \
        !           199:       if (flag_pic != 0 && (RELOC) != 0)                               \
        !           200:        data_section ();                                                \
        !           201:     }                                                                  \
        !           202:   else if (*tree_code_type[(int) TREE_CODE (T)] == 'c')                        \
        !           203:     {                                                                  \
        !           204:       if ((TREE_CODE (T) == STRING_CST && flag_writable_strings)       \
        !           205:          || TYPE_ALIGN (TREE_TYPE (T)) > MAX_TEXT_ALIGN)               \
        !           206:        data_section ();                                                \
        !           207:       else                                                             \
        !           208:        text_section ();                                                \
        !           209:     }                                                                  \
        !           210: }
        !           211: 
        !           212: /* Use text section for a constant
        !           213:    unless we need more alignment than that offers.  */
        !           214: #define SELECT_RTX_SECTION(MODE, X)            \
        !           215: {                                              \
        !           216:   if (GET_MODE_BITSIZE (MODE) <= MAX_TEXT_ALIGN \
        !           217:       && ! (flag_pic && symbolic_operand (X)))  \
        !           218:     text_section ();                           \
        !           219:   else                                         \
        !           220:     data_section ();                           \
        !           221: }
        !           222: 
        !           223: /* Standard register usage.  */
        !           224: 
        !           225: /* Number of actual hardware registers.
        !           226:    The hardware registers are assigned numbers for the compiler
        !           227:    from 0 to just below FIRST_PSEUDO_REGISTER.
        !           228:    All registers that the compiler knows about must be given numbers,
        !           229:    even those that are not normally considered general registers.
        !           230: 
        !           231:    SPARC has 32 integer registers and 32 floating point registers.  */
        !           232: 
        !           233: #define FIRST_PSEUDO_REGISTER 64
        !           234: 
        !           235: /* 1 for registers that have pervasive standard uses
        !           236:    and are not available for the register allocator.
        !           237:    0 is used for the condition code and not to represent %g0, which is
        !           238:    hardwired to 0, so reg 0 is *not* fixed.
        !           239:    2 and 3 are free to use as temporaries.
        !           240:    4 through 7 are expected to become usefully defined in the future.
        !           241:    Your milage may vary.  */
        !           242: #define FIXED_REGISTERS  \
        !           243:  {0, 0, 0, 0, 1, 1, 1, 1,      \
        !           244:   0, 0, 0, 0, 0, 0, 1, 0,      \
        !           245:   0, 0, 0, 0, 0, 0, 0, 0,      \
        !           246:   0, 0, 0, 0, 0, 0, 1, 1,      \
        !           247:                                \
        !           248:   0, 0, 0, 0, 0, 0, 0, 0,      \
        !           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: 
        !           253: /* 1 for registers not available across function calls.
        !           254:    These must include the FIXED_REGISTERS and also any
        !           255:    registers that can be used without being saved.
        !           256:    The latter must include the registers where values are returned
        !           257:    and the register where structure-value addresses are passed.
        !           258:    Aside from that, you can include as many other registers as you like.  */
        !           259: #define CALL_USED_REGISTERS  \
        !           260:  {1, 1, 1, 1, 1, 1, 1, 1,      \
        !           261:   1, 1, 1, 1, 1, 1, 1, 1,      \
        !           262:   0, 0, 0, 0, 0, 0, 0, 0,      \
        !           263:   0, 0, 0, 0, 0, 0, 1, 1,      \
        !           264:                                \
        !           265:   1, 1, 1, 1, 1, 1, 1, 1,      \
        !           266:   1, 1, 1, 1, 1, 1, 1, 1,      \
        !           267:   1, 1, 1, 1, 1, 1, 1, 1,      \
        !           268:   1, 1, 1, 1, 1, 1, 1, 1}
        !           269: 
        !           270: /* Return number of consecutive hard regs needed starting at reg REGNO
        !           271:    to hold something of mode MODE.
        !           272:    This is ordinarily the length in words of a value of mode MODE
        !           273:    but can be less for certain modes in special long registers.
        !           274: 
        !           275:    On SPARC, ordinary registers hold 32 bits worth;
        !           276:    this means both integer and floating point registers.
        !           277: 
        !           278:    We use vectors to keep this information about registers.  */
        !           279: 
        !           280: /* How many hard registers it takes to make a register of this mode.  */
        !           281: extern int hard_regno_nregs[];
        !           282: 
        !           283: #define HARD_REGNO_NREGS(REGNO, MODE)   \
        !           284:   ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
        !           285: 
        !           286: /* Value is 1 if register/mode pair is acceptable on sparc.  */
        !           287: extern int hard_regno_mode_ok[FIRST_PSEUDO_REGISTER];
        !           288: 
        !           289: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
        !           290:    On SPARC, the cpu registers can hold any mode but the float registers
        !           291:    can only hold SFmode or DFmode.  See sparc.c for how we
        !           292:    initialize this.  */
        !           293: #define HARD_REGNO_MODE_OK(REGNO, MODE) \
        !           294:   ((hard_regno_mode_ok[REGNO] & (1<<(int)(MODE))) != 0)
        !           295: 
        !           296: /* Value is 1 if it is a good idea to tie two pseudo registers
        !           297:    when one has mode MODE1 and one has mode MODE2.
        !           298:    If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
        !           299:    for any hard reg, then this must be 0 for correct output.  */
        !           300: #define MODES_TIEABLE_P(MODE1, MODE2) \
        !           301:   ((MODE1) == (MODE2) || GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2))
        !           302: 
        !           303: /* Specify the registers used for certain standard purposes.
        !           304:    The values of these macros are register numbers.  */
        !           305: 
        !           306: /* SPARC pc isn't overloaded on a register that the compiler knows about.  */
        !           307: /* #define PC_REGNUM  */
        !           308: 
        !           309: /* Register to use for pushing function arguments.  */
        !           310: #define STACK_POINTER_REGNUM 14
        !           311: 
        !           312: /* Actual top-of-stack address is 92 greater than the contents
        !           313:    of the stack pointer register.  92 = 68 + 24.  64 bytes reserving space
        !           314:    for the ins and local registers, 4 byte for structure return address, and
        !           315:    24 bytes for the 6 register parameters.  */
        !           316: #define STACK_POINTER_OFFSET FIRST_PARM_OFFSET(0)
        !           317: 
        !           318: /* Base register for access to local variables of the function.  */
        !           319: #define FRAME_POINTER_REGNUM 30
        !           320: 
        !           321: #if 0
        !           322: /* Register that is used for the return address.  */
        !           323: #define RETURN_ADDR_REGNUM 15
        !           324: #endif
        !           325: 
        !           326: /* Value should be nonzero if functions must have frame pointers.
        !           327:    Zero means the frame pointer need not be set up (and parms
        !           328:    may be accessed via the stack pointer) in functions that seem suitable.
        !           329:    This is computed in `reload', in reload1.c.
        !           330: 
        !           331:    Used in flow.c, global-alloc.c, and reload1.c.  */
        !           332: extern int leaf_function;
        !           333: 
        !           334: #define FRAME_POINTER_REQUIRED \
        !           335:   (! (leaf_function_p () && only_leaf_regs_used ()))
        !           336: 
        !           337: /* C statement to store the difference between the frame pointer
        !           338:    and the stack pointer values immediately after the function prologue.
        !           339: 
        !           340:    Note, we always pretend that this is a leaf function because if
        !           341:    it's not, there's no point in trying to eliminate the
        !           342:    frame pointer.  If it is a leaf function, we guessed right!  */
        !           343: #define INITIAL_FRAME_POINTER_OFFSET(VAR) \
        !           344:   do { (VAR) = compute_frame_size (get_frame_size (), 1); } while (0)
        !           345: 
        !           346: /* Base register for access to arguments of the function.  */
        !           347: #define ARG_POINTER_REGNUM 30
        !           348: 
        !           349: /* Register in which static-chain is passed to a function.  */
        !           350: /* ??? */
        !           351: #define STATIC_CHAIN_REGNUM 1
        !           352: 
        !           353: /* Register which holds offset table for position-independent
        !           354:    data references.  */
        !           355: 
        !           356: #define PIC_OFFSET_TABLE_REGNUM 23
        !           357: 
        !           358: #define INITIALIZE_PIC initialize_pic ()
        !           359: #define FINALIZE_PIC finalize_pic ()
        !           360: 
        !           361: /* Functions which return large structures get the address
        !           362:    to place the wanted value at offset 64 from the frame.
        !           363:    Must reserve 64 bytes for the in and local registers.  */
        !           364: /* Used only in other #defines in this file.  */
        !           365: #define STRUCT_VALUE_OFFSET 64
        !           366: 
        !           367: #define STRUCT_VALUE \
        !           368:   gen_rtx (MEM, Pmode,                                 \
        !           369:           gen_rtx (PLUS, Pmode, stack_pointer_rtx,     \
        !           370:                    gen_rtx (CONST_INT, VOIDmode, STRUCT_VALUE_OFFSET)))
        !           371: #define STRUCT_VALUE_INCOMING \
        !           372:   gen_rtx (MEM, Pmode,                                 \
        !           373:           gen_rtx (PLUS, Pmode, frame_pointer_rtx,     \
        !           374:                    gen_rtx (CONST_INT, VOIDmode, STRUCT_VALUE_OFFSET)))
        !           375: 
        !           376: /* Define the classes of registers for register constraints in the
        !           377:    machine description.  Also define ranges of constants.
        !           378: 
        !           379:    One of the classes must always be named ALL_REGS and include all hard regs.
        !           380:    If there is more than one class, another class must be named NO_REGS
        !           381:    and contain no registers.
        !           382: 
        !           383:    The name GENERAL_REGS must be the name of a class (or an alias for
        !           384:    another name such as ALL_REGS).  This is the class of registers
        !           385:    that is allowed by "g" or "r" in a register constraint.
        !           386:    Also, registers outside this class are allocated only when
        !           387:    instructions express preferences for them.
        !           388: 
        !           389:    The classes must be numbered in nondecreasing order; that is,
        !           390:    a larger-numbered class must never be contained completely
        !           391:    in a smaller-numbered class.
        !           392: 
        !           393:    For any two classes, it is very desirable that there be another
        !           394:    class that represents their union.  */
        !           395: 
        !           396: /* The SPARC has two kinds of registers, general and floating point.  */
        !           397: 
        !           398: enum reg_class { NO_REGS, GENERAL_REGS, FP_REGS, ALL_REGS, LIM_REG_CLASSES };
        !           399: 
        !           400: #define N_REG_CLASSES (int) LIM_REG_CLASSES
        !           401: 
        !           402: /* Give names of register classes as strings for dump file.   */
        !           403: 
        !           404: #define REG_CLASS_NAMES \
        !           405:  {"NO_REGS", "GENERAL_REGS", "FP_REGS", "ALL_REGS" }
        !           406: 
        !           407: /* Define which registers fit in which classes.
        !           408:    This is an initializer for a vector of HARD_REG_SET
        !           409:    of length N_REG_CLASSES.  */
        !           410: 
        !           411: #if 0 && defined (__GNUC__)
        !           412: #define REG_CLASS_CONTENTS {0LL, 0xfffffffeLL, 0xffffffff00000000LL, 0xfffffffffffffffeLL}
        !           413: #else
        !           414: #define REG_CLASS_CONTENTS {{0, 0}, {-2, 0}, {0, -1}, {-2, -1}}
        !           415: #endif
        !           416: 
        !           417: /* The same information, inverted:
        !           418:    Return the class number of the smallest class containing
        !           419:    reg number REGNO.  This could be a conditional expression
        !           420:    or could index an array.  */
        !           421: 
        !           422: #define REGNO_REG_CLASS(REGNO) \
        !           423:   ((REGNO) >= 32 ? FP_REGS : (REGNO) == 0 ? NO_REGS : GENERAL_REGS)
        !           424: 
        !           425: /* This is the order in which to allocate registers
        !           426:    normally.  */
        !           427: #define REG_ALLOC_ORDER \
        !           428: { 8, 9, 10, 11, 12, 13, 2, 15,         \
        !           429:   16, 17, 18, 19, 20, 21, 22, 23,      \
        !           430:   24, 25, 26, 27, 28, 29, 3, 31,       \
        !           431:   32, 33, 34, 35, 36, 37, 38, 39,      \
        !           432:   40, 41, 42, 43, 44, 45, 46, 47,      \
        !           433:   48, 49, 50, 51, 52, 53, 54, 55,      \
        !           434:   56, 57, 58, 59, 60, 61, 62, 63,      \
        !           435:   1, 4, 5, 6, 7, 0, 14, 30};
        !           436: 
        !           437: /* This is the order in which to allocate registers for
        !           438:    leaf functions.  If all registers can fit in the "i" registers,
        !           439:    then we have the possibility of having a leaf function.  */
        !           440: #define REG_LEAF_ALLOC_ORDER \
        !           441: { 2, 3, 24, 25, 26, 27, 28, 29,                \
        !           442:   15, 8, 9, 10, 11, 12, 13,            \
        !           443:   16, 17, 18, 19, 20, 21, 22, 23,      \
        !           444:   32, 33, 34, 35, 36, 37, 38, 39,      \
        !           445:   40, 41, 42, 43, 44, 45, 46, 47,      \
        !           446:   48, 49, 50, 51, 52, 53, 54, 55,      \
        !           447:   56, 57, 58, 59, 60, 61, 62, 63,      \
        !           448:   1, 4, 5, 6, 7, 0, 14, 30, 31};
        !           449: 
        !           450: #define ORDER_REGS_FOR_LOCAL_ALLOC order_regs_for_local_alloc ()
        !           451: 
        !           452: #define LEAF_REGISTERS \
        !           453: { 1, 1, 1, 1, 1, 1, 1, 1,      \
        !           454:   0, 0, 0, 0, 0, 0, 1, 0,      \
        !           455:   0, 0, 0, 0, 0, 0, 0, 0,      \
        !           456:   1, 1, 1, 1, 1, 1, 0, 1,      \
        !           457:   1, 1, 1, 1, 1, 1, 1, 1,      \
        !           458:   1, 1, 1, 1, 1, 1, 1, 1,      \
        !           459:   1, 1, 1, 1, 1, 1, 1, 1,      \
        !           460:   1, 1, 1, 1, 1, 1, 1, 1};
        !           461: 
        !           462: extern char leaf_reg_remap[];
        !           463: #define LEAF_REG_REMAP(REGNO) (leaf_reg_remap[REGNO])
        !           464: extern char leaf_reg_backmap[];
        !           465: #define LEAF_REG_BACKMAP(REGNO) (leaf_reg_backmap[REGNO])
        !           466: 
        !           467: #define REG_USED_SO_FAR(REGNO) \
        !           468:   ((REGNO) >= 24 && (REGNO) < 30       \
        !           469:    ? (regs_ever_live[24]               \
        !           470:       || regs_ever_live[25]            \
        !           471:       || regs_ever_live[26]            \
        !           472:       || regs_ever_live[27]            \
        !           473:       || regs_ever_live[28]            \
        !           474:       || regs_ever_live[29]) : 0)
        !           475: 
        !           476: /* The class value for index registers, and the one for base regs.  */
        !           477: #define INDEX_REG_CLASS GENERAL_REGS
        !           478: #define BASE_REG_CLASS GENERAL_REGS
        !           479: 
        !           480: /* Get reg_class from a letter such as appears in the machine description.  */
        !           481: 
        !           482: #define REG_CLASS_FROM_LETTER(C) \
        !           483:   ((C) == 'f' ? FP_REGS : (C) == 'r' ? GENERAL_REGS : NO_REGS)
        !           484: 
        !           485: /* The letters I, J, K, L and M in a register constraint string
        !           486:    can be used to stand for particular ranges of immediate operands.
        !           487:    This macro defines what the ranges are.
        !           488:    C is the letter, and VALUE is a constant value.
        !           489:    Return 1 if VALUE is in the range specified by C.
        !           490: 
        !           491:    For SPARC, `I' is used for the range of constants an insn
        !           492:    can actually contain.
        !           493:    `J' is used for the range which is just zero (since that is R0).
        !           494:    `K' is used for the 5-bit operand of a compare insns.  */
        !           495: 
        !           496: #define SMALL_INT(X) ((unsigned) (INTVAL (X) + 0x1000) < 0x2000)
        !           497: 
        !           498: #define CONST_OK_FOR_LETTER_P(VALUE, C)  \
        !           499:   ((C) == 'I' ? (unsigned) ((VALUE) + 0x1000) < 0x2000 \
        !           500:    : (C) == 'J' ? (VALUE) == 0                         \
        !           501:    : (C) == 'K' ? ((VALUE) & 0x3ff) == 0               \
        !           502:    : 0)
        !           503: 
        !           504: /* Similar, but for floating constants, and defining letters G and H.
        !           505:    Here VALUE is the CONST_DOUBLE rtx itself.  */
        !           506: 
        !           507: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C) \
        !           508:   ((C) == 'G' ? CONST_DOUBLE_HIGH (VALUE) == 0         \
        !           509:    && CONST_DOUBLE_LOW (VALUE) == 0                    \
        !           510:    : (C) == 'H' ? arith_double_operand (VALUE, DImode) \
        !           511:    : 0)
        !           512: 
        !           513: /* Given an rtx X being reloaded into a reg required to be
        !           514:    in class CLASS, return the class of reg to actually use.
        !           515:    In general this is just CLASS; but on some machines
        !           516:    in some cases it is preferable to use a more restrictive class.  */
        !           517: #define PREFERRED_RELOAD_CLASS(X,CLASS) CLASS
        !           518: 
        !           519: /* Return the register class of a scratch register needed to load IN into
        !           520:    a register of class CLASS in MODE.
        !           521: 
        !           522:    On the SPARC, when PIC, we need a temporary when loading some addresses
        !           523:    into a register.  */
        !           524: 
        !           525: #define SECONDARY_INPUT_RELOAD_CLASS(CLASS, MODE, IN) \
        !           526:   (flag_pic && pic_address_needs_scratch (IN) ? GENERAL_REGS : NO_REGS)
        !           527: 
        !           528: /* Return the maximum number of consecutive registers
        !           529:    needed to represent mode MODE in a register of class CLASS.  */
        !           530: /* On SPARC, this is the size of MODE in words.  */
        !           531: #define CLASS_MAX_NREGS(CLASS, MODE)   \
        !           532:   ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD)
        !           533: 
        !           534: /* Stack layout; function entry, exit and calling.  */
        !           535: 
        !           536: /* Define the number of register that can hold parameters.
        !           537:    These two macros are used only in other macro definitions below.  */
        !           538: #define NPARM_REGS 6
        !           539: 
        !           540: /* Define this if pushing a word on the stack
        !           541:    makes the stack pointer a smaller address.  */
        !           542: #define STACK_GROWS_DOWNWARD
        !           543: 
        !           544: /* Define this if the nominal address of the stack frame
        !           545:    is at the high-address end of the local variables;
        !           546:    that is, each additional local variable allocated
        !           547:    goes at a more negative offset in the frame.  */
        !           548: #define FRAME_GROWS_DOWNWARD
        !           549: 
        !           550: /* Offset within stack frame to start allocating local variables at.
        !           551:    If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
        !           552:    first local allocated.  Otherwise, it is the offset to the BEGINNING
        !           553:    of the first local allocated.  */
        !           554: #define STARTING_FRAME_OFFSET (-16)
        !           555: 
        !           556: /* If we generate an insn to push BYTES bytes,
        !           557:    this says how many the stack pointer really advances by.
        !           558:    On SPARC, don't define this because there are no push insns.  */
        !           559: /*  #define PUSH_ROUNDING(BYTES) */
        !           560: 
        !           561: /* Offset of first parameter from the argument pointer register value.
        !           562:    This is 64 for the ins and locals, plus 4 for the struct-return reg
        !           563:    even if this function isn't going to use it.  */
        !           564: #define FIRST_PARM_OFFSET(FNDECL) (STRUCT_VALUE_OFFSET + UNITS_PER_WORD)
        !           565: 
        !           566: /* Offset from top-of-stack address to location to store the
        !           567:    function parameter if it can't go in a register.
        !           568:    Addresses for following parameters are computed relative to this one.  */
        !           569: #define FIRST_PARM_CALLER_OFFSET(FNDECL)       \
        !           570:   (STRUCT_VALUE_OFFSET + UNITS_PER_WORD - STACK_POINTER_OFFSET)
        !           571: 
        !           572: /* When a parameter is passed in a register, stack space is still
        !           573:    allocated for it.  */
        !           574: #define REG_PARM_STACK_SPACE(DECL) (NPARM_REGS * UNITS_PER_WORD)
        !           575: 
        !           576: /* Keep the stack pointer constant throughout the function.
        !           577:    This is both an optimization and a neccessity: longjmp
        !           578:    doesn't behave itself when the stack pointer moves within
        !           579:    the function!  */
        !           580: #define ACCUMULATE_OUTGOING_ARGS
        !           581: 
        !           582: /* Value is the number of bytes of arguments automatically
        !           583:    popped when returning from a subroutine call.
        !           584:    FUNTYPE is the data type of the function (as a tree),
        !           585:    or for a library call it is an identifier node for the subroutine name.
        !           586:    SIZE is the number of bytes of arguments passed on the stack.  */
        !           587: 
        !           588: #define RETURN_POPS_ARGS(FUNTYPE,SIZE) 0
        !           589: 
        !           590: /* Some subroutine macros specific to this machine.  */
        !           591: #define BASE_RETURN_VALUE_REG(MODE) \
        !           592:  ((MODE) == SFmode || (MODE) == DFmode ? 32 : 8)
        !           593: #define BASE_OUTGOING_VALUE_REG(MODE) \
        !           594:  ((MODE) == SFmode || (MODE) == DFmode ? 32 : 24)
        !           595: #define BASE_PASSING_ARG_REG(MODE) (8)
        !           596: #define BASE_INCOMING_ARG_REG(MODE) (24)
        !           597: 
        !           598: /* Define how to find the value returned by a function.
        !           599:    VALTYPE is the data type of the value (as a tree).
        !           600:    If the precise function being called is known, FUNC is its FUNCTION_DECL;
        !           601:    otherwise, FUNC is 0.  */
        !           602: 
        !           603: /* On SPARC the value is found in the first "output" register.  */
        !           604: 
        !           605: #define FUNCTION_VALUE(VALTYPE, FUNC)  \
        !           606:   gen_rtx (REG, TYPE_MODE (VALTYPE), BASE_RETURN_VALUE_REG (TYPE_MODE (VALTYPE)))
        !           607: 
        !           608: /* But the called function leaves it in the first "input" register.  */
        !           609: 
        !           610: #define FUNCTION_OUTGOING_VALUE(VALTYPE, FUNC)  \
        !           611:   gen_rtx (REG, TYPE_MODE (VALTYPE), BASE_OUTGOING_VALUE_REG (TYPE_MODE (VALTYPE)))
        !           612: 
        !           613: /* Define how to find the value returned by a library function
        !           614:    assuming the value has mode MODE.  */
        !           615: 
        !           616: #define LIBCALL_VALUE(MODE)    \
        !           617:   gen_rtx (REG, MODE, BASE_RETURN_VALUE_REG (MODE))
        !           618: 
        !           619: /* 1 if N is a possible register number for a function value
        !           620:    as seen by the caller.
        !           621:    On SPARC, the first "output" reg is used for integer values,
        !           622:    and the first floating point register is used for floating point values.  */
        !           623: 
        !           624: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 8 || (N) == 32)
        !           625: 
        !           626: /* 1 if N is a possible register number for function argument passing.
        !           627:    On SPARC, these are the "output" registers.  */
        !           628: 
        !           629: #define FUNCTION_ARG_REGNO_P(N) ((N) < 14 && (N) > 7)
        !           630: 
        !           631: /* Define a data type for recording info about an argument list
        !           632:    during the scan of that argument list.  This data type should
        !           633:    hold all necessary information about the function itself
        !           634:    and about the args processed so far, enough to enable macros
        !           635:    such as FUNCTION_ARG to determine where the next arg should go.
        !           636: 
        !           637:    On SPARC, this is a single integer, which is a number of words
        !           638:    of arguments scanned so far (including the invisible argument,
        !           639:    if any, which holds the structure-value-address).
        !           640:    Thus 7 or more means all following args should go on the stack.  */
        !           641: 
        !           642: #define CUMULATIVE_ARGS int
        !           643: 
        !           644: #define ROUND_ADVANCE(SIZE)    \
        !           645:   ((SIZE + UNITS_PER_WORD - 1)/UNITS_PER_WORD)
        !           646: 
        !           647: /* Initialize a variable CUM of type CUMULATIVE_ARGS
        !           648:    for a call to a function whose data type is FNTYPE.
        !           649:    For a library call, FNTYPE is 0.
        !           650: 
        !           651:    On SPARC, the offset always starts at 0: the first parm reg is always
        !           652:    the same reg.  */
        !           653: 
        !           654: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) ((CUM) = 0)
        !           655: 
        !           656: /* Update the data in CUM to advance over an argument
        !           657:    of mode MODE and data type TYPE.
        !           658:    (TYPE is null for libcalls where that information may not be available.)  */
        !           659: 
        !           660: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)   \
        !           661:  ((CUM) += ((MODE) != BLKmode                          \
        !           662:            ? ROUND_ADVANCE (GET_MODE_SIZE (MODE))      \
        !           663:            : ROUND_ADVANCE (int_size_in_bytes (TYPE))))
        !           664: 
        !           665: /* Determine where to put an argument to a function.
        !           666:    Value is zero to push the argument on the stack,
        !           667:    or a hard register in which to store the argument.
        !           668: 
        !           669:    MODE is the argument's machine mode.
        !           670:    TYPE is the data type of the argument (as a tree).
        !           671:     This is null for libcalls where that information may
        !           672:     not be available.
        !           673:    CUM is a variable of type CUMULATIVE_ARGS which gives info about
        !           674:     the preceding args and about the function being called.
        !           675:    NAMED is nonzero if this argument is a named parameter
        !           676:     (otherwise it is an extra parameter matching an ellipsis).  */
        !           677: 
        !           678: /* On SPARC the first six args are normally in registers
        !           679:    and the rest are pushed.  Any arg that starts within the first 6 words
        !           680:    is at least partially passed in a register unless its data type forbids.  */
        !           681: 
        !           682: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED)                           \
        !           683: ((CUM) < NPARM_REGS                                                    \
        !           684:  && ((TYPE)==0 || ! TREE_ADDRESSABLE ((tree)(TYPE)))                   \
        !           685:  && ((TYPE)==0 || (MODE) != BLKmode || (TYPE_ALIGN ((TYPE)) % PARM_BOUNDARY == 0))     \
        !           686:  ? gen_rtx (REG, (MODE), BASE_PASSING_ARG_REG (MODE) + (CUM)) : 0)
        !           687: 
        !           688: /* Define where a function finds its arguments.
        !           689:    This is different from FUNCTION_ARG because of register windows.  */
        !           690: 
        !           691: #define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED)                  \
        !           692: ((CUM) < NPARM_REGS                                                    \
        !           693:  && ((TYPE)==0 || ! TREE_ADDRESSABLE ((tree)(TYPE)))                   \
        !           694:  && ((MODE) != BLKmode || (TYPE_ALIGN ((TYPE)) % PARM_BOUNDARY == 0))  \
        !           695:  ? gen_rtx (REG, (MODE), BASE_INCOMING_ARG_REG (MODE) + (CUM)) : 0)
        !           696: 
        !           697: /* For an arg passed partly in registers and partly in memory,
        !           698:    this is the number of registers used.
        !           699:    For args passed entirely in registers or entirely in memory, zero.
        !           700:    Any arg that starts in the first 6 regs but won't entirely fit in them
        !           701:    needs partial registers on the Sparc.  */
        !           702: 
        !           703: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED)             \
        !           704:   (((CUM) < NPARM_REGS                                                 \
        !           705:     && ((TYPE)==0 || ! TREE_ADDRESSABLE ((tree)(TYPE)))                        \
        !           706:     && ((TYPE)==0 || (MODE) != BLKmode || (TYPE_ALIGN ((TYPE)) % PARM_BOUNDARY == 0))\
        !           707:     && ((CUM)                                                          \
        !           708:        + ((MODE) == BLKmode                                            \
        !           709:           ? ROUND_ADVANCE (int_size_in_bytes (TYPE))                   \
        !           710:           : ROUND_ADVANCE (GET_MODE_SIZE (MODE)))) - NPARM_REGS > 0)           \
        !           711:    ? (NPARM_REGS - (CUM))                                              \
        !           712:    : 0)
        !           713: 
        !           714: /* The SPARC ABI stipulates passing struct arguments (of any size)
        !           715:    by invisible reference.  */
        !           716: /* Must pass by reference if this is a structure/union type, and this is not
        !           717:    target gnu or the address of this structure is needed somewhere.  */
        !           718: #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED)         \
        !           719:   (TYPE && (TREE_CODE (TYPE) == RECORD_TYPE || TREE_CODE (TYPE) == UNION_TYPE))
        !           720: 
        !           721: /* Define the information needed to generate branch and scc insns.  This is
        !           722:    stored from the compare operation.  Note that we can't use "rtx" here
        !           723:    since it hasn't been defined!  */
        !           724: 
        !           725: extern struct rtx_def *sparc_compare_op0, *sparc_compare_op1;
        !           726: 
        !           727: /* Define the function that build the compare insn for scc and bcc.  */
        !           728: 
        !           729: extern struct rtx_def *gen_compare_reg ();
        !           730: 
        !           731: /* Output the label for a function definition.  */
        !           732: 
        !           733: #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
        !           734: {                                                      \
        !           735:   extern tree double_type_node, float_type_node;       \
        !           736:   if (TREE_TYPE (DECL) == float_type_node)             \
        !           737:     fprintf (FILE, "\t.proc 6\n");                     \
        !           738:   else if (TREE_TYPE (DECL) == double_type_node)       \
        !           739:     fprintf (FILE, "\t.proc 7\n");                     \
        !           740:   else if (TREE_TYPE (DECL) == void_type_node)         \
        !           741:     fprintf (FILE, "\t.proc 0\n");                     \
        !           742:   else fprintf (FILE, "\t.proc 1\n");                  \
        !           743:   ASM_OUTPUT_LABEL (FILE, NAME);                       \
        !           744: }
        !           745: 
        !           746: /* Two views of the size of the current frame.  */
        !           747: extern int actual_fsize;
        !           748: extern int apparent_fsize;
        !           749: 
        !           750: /* This macro generates the assembly code for function entry.
        !           751:    FILE is a stdio stream to output the code to.
        !           752:    SIZE is an int: how many units of temporary storage to allocate.
        !           753:    Refer to the array `regs_ever_live' to determine which registers
        !           754:    to save; `regs_ever_live[I]' is nonzero if register number I
        !           755:    is ever used in the function.  This macro is responsible for
        !           756:    knowing which registers should not be saved even if used.  */
        !           757: 
        !           758: /* On SPARC, move-double insns between fpu and cpu need an 8-byte block
        !           759:    of memory.  If any fpu reg is used in the function, we allocate
        !           760:    such a block here, at the bottom of the frame, just in case it's needed.
        !           761: 
        !           762:    If this function is a leaf procedure, then we may choose not
        !           763:    to do a "save" insn.  The decision about whether or not
        !           764:    to do this is made in regclass.c.  */
        !           765: 
        !           766: #define FUNCTION_PROLOGUE(FILE, SIZE)                          \
        !           767:   output_function_prologue (FILE, SIZE, leaf_function)
        !           768: 
        !           769: /* Output assembler code to FILE to increment profiler label # LABELNO
        !           770:    for profiling a function entry.  */
        !           771: 
        !           772: #define FUNCTION_PROFILER(FILE, LABELNO)  \
        !           773:   fprintf (FILE, "\tsethi %%hi(LP%d),%%o0\n\tcall mcount\n\tor %%lo(LP%d),%%o0,%%o0\n", \
        !           774:           (LABELNO), (LABELNO))
        !           775: 
        !           776: /* Output assembler code to FILE to initialize this source file's
        !           777:    basic block profiling info, if that has not already been done.  */
        !           778: 
        !           779: #define FUNCTION_BLOCK_PROFILER(FILE, LABELNO)  \
        !           780:   fprintf (FILE, "\tsethi %%hi(LPBX0),%%o0\n\tld [%%lo(LPBX0)+%%o0],%%o1\n\ttst %%o1\n\tbne LPY%d\n\tadd %%o0,%%lo(LPBX0),%%o0\n\tcall ___bb_init_func\n\tnop\nLPY%d:\n",  \
        !           781:           (LABELNO), (LABELNO))
        !           782: 
        !           783: /* Output assembler code to FILE to increment the entry-count for
        !           784:    the BLOCKNO'th basic block in this source file.  */
        !           785: 
        !           786: #define BLOCK_PROFILER(FILE, BLOCKNO) \
        !           787: {                                                              \
        !           788:   int blockn = (BLOCKNO);                                      \
        !           789:   fprintf (FILE, "\tsethi %%hi(LPBX2+%d),%%g1\n\tld [%%lo(LPBX2+%d)+%%g1],%%g2\n\
        !           790: \tadd %%g2,1,%%g2\n\tst %%g2,[%%lo(LPBX2+%d)+%%g1]\n",         \
        !           791:           4 * blockn, 4 * blockn, 4 * blockn);                 \
        !           792: }
        !           793: 
        !           794: /* Output rtl to increment the entry-count for the LABELNO'th instrumented
        !           795:    arc in this source file.  */
        !           796: 
        !           797: #define ARC_PROFILER(ARCNO, INSERT_AFTER) \
        !           798:   output_arc_profiler (ARCNO, INSERT_AFTER)
        !           799: 
        !           800: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
        !           801:    the stack pointer does not matter.  The value is tested only in
        !           802:    functions that have frame pointers.
        !           803:    No definition is equivalent to always zero.  */
        !           804: 
        !           805: extern int current_function_calls_alloca;
        !           806: extern int current_function_outgoing_args_size;
        !           807: 
        !           808: #define EXIT_IGNORE_STACK      \
        !           809:  (get_frame_size () != 0       \
        !           810:   || current_function_calls_alloca || current_function_outgoing_args_size)
        !           811: 
        !           812: /* This macro generates the assembly code for function exit,
        !           813:    on machines that need it.  If FUNCTION_EPILOGUE is not defined
        !           814:    then individual return instructions are generated for each
        !           815:    return statement.  Args are same as for FUNCTION_PROLOGUE.
        !           816: 
        !           817:    The function epilogue should not depend on the current stack pointer!
        !           818:    It should use the frame pointer only.  This is mandatory because
        !           819:    of alloca; we also take advantage of it to omit stack adjustments
        !           820:    before returning.  */
        !           821: 
        !           822: /* This declaration is needed due to traditional/ANSI
        !           823:    incompatibilities which cannot be #ifdefed away
        !           824:    because they occur inside of macros.  Sigh.  */
        !           825: extern union tree_node *current_function_decl;
        !           826: 
        !           827: #define FUNCTION_EPILOGUE(FILE, SIZE)                          \
        !           828:   output_function_epilogue (FILE, SIZE, leaf_function, 1)
        !           829: 
        !           830: #define DELAY_SLOTS_FOR_EPILOGUE 1
        !           831: #define ELIGIBLE_FOR_EPILOGUE_DELAY(trial, slots_filled)       \
        !           832:   eligible_for_epilogue_delay (trial, slots_filled)
        !           833: 
        !           834: /* Output assembler code for a block containing the constant parts
        !           835:    of a trampoline, leaving space for the variable parts.  */
        !           836: 
        !           837: /* On the sparc, the trampoline contains five instructions:
        !           838:      sethi #TOP_OF_FUNCTION,%g2
        !           839:      or #BOTTOM_OF_FUNCTION,%g2,%g2
        !           840:      sethi #TOP_OF_STATIC,%g1
        !           841:      jmp g2
        !           842:      or #BOTTOM_OF_STATIC,%g1,%g1  */
        !           843: #define TRAMPOLINE_TEMPLATE(FILE)                                      \
        !           844: {                                                                      \
        !           845:   ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x00000000));    \
        !           846:   ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x00000000));    \
        !           847:   ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x00000000));    \
        !           848:   ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x81C08000));    \
        !           849:   ASM_OUTPUT_INT (FILE, gen_rtx (CONST_INT, VOIDmode, 0x00000000));    \
        !           850: }
        !           851: 
        !           852: /* Length in units of the trampoline for entering a nested function.  */
        !           853: 
        !           854: #define TRAMPOLINE_SIZE 20
        !           855: 
        !           856: /* Emit RTL insns to initialize the variable parts of a trampoline.
        !           857:    FNADDR is an RTX for the address of the function's pure code.
        !           858:    CXT is an RTX for the static chain value for the function.
        !           859: 
        !           860:    This takes 16 insns: 2 shifts & 2 ands (to split up addresses), 4 sethi
        !           861:    (to load in opcodes), 4 iors (to merge address and opcodes), and 4 writes
        !           862:    (to store insns).  This is a bit excessive.  Perhaps a different
        !           863:    mechanism would be better here.  */
        !           864: 
        !           865: #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT)                      \
        !           866: {                                                                      \
        !           867:   rtx high_cxt = expand_shift (RSHIFT_EXPR, SImode, CXT,               \
        !           868:                              size_int (10), 0, 1);                     \
        !           869:   rtx high_fn = expand_shift (RSHIFT_EXPR, SImode, FNADDR,             \
        !           870:                             size_int (10), 0, 1);                      \
        !           871:   rtx low_cxt = expand_and (CXT, gen_rtx (CONST_INT, VOIDmode, 0x3ff), 0); \
        !           872:   rtx low_fn = expand_and (FNADDR, gen_rtx (CONST_INT, VOIDmode, 0x3ff), 0); \
        !           873:   rtx g1_sethi = gen_rtx (HIGH, SImode,                                        \
        !           874:                          gen_rtx (CONST_INT, VOIDmode, 0x03000000));   \
        !           875:   rtx g2_sethi = gen_rtx (HIGH, SImode,                                        \
        !           876:                          gen_rtx (CONST_INT, VOIDmode, 0x05000000));   \
        !           877:   rtx g1_ori = gen_rtx (HIGH, SImode,                                  \
        !           878:                        gen_rtx (CONST_INT, VOIDmode, 0x82106000));     \
        !           879:   rtx g2_ori = gen_rtx (HIGH, SImode,                                  \
        !           880:                        gen_rtx (CONST_INT, VOIDmode, 0x8410A000));     \
        !           881:   rtx tem = gen_reg_rtx (SImode);                                      \
        !           882:   emit_move_insn (tem, g2_sethi);                                      \
        !           883:   emit_insn (gen_iorsi3 (high_fn, high_fn, tem));                      \
        !           884:   emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 0)), high_fn);\
        !           885:   emit_move_insn (tem, g2_ori);                                                \
        !           886:   emit_insn (gen_iorsi3 (low_fn, low_fn, tem));                                \
        !           887:   emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 4)), low_fn);\
        !           888:   emit_move_insn (tem, g1_sethi);                                      \
        !           889:   emit_insn (gen_iorsi3 (high_cxt, high_cxt, tem));                    \
        !           890:   emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 8)), high_cxt);\
        !           891:   emit_move_insn (tem, g1_ori);                                                \
        !           892:   emit_insn (gen_iorsi3 (low_cxt, low_cxt, tem));                      \
        !           893:   emit_move_insn (gen_rtx (MEM, SImode, plus_constant (TRAMP, 16)), low_cxt);\
        !           894: }
        !           895: 
        !           896: /* Emit code for a call to builtin_saveregs.  We must emit USE insns which
        !           897:    reference the 6 input registers.  Ordinarily they are not call used
        !           898:    registers, but they are for _builtin_saveregs, so we must make this
        !           899:    explicit.  */
        !           900: 
        !           901: #define EXPAND_BUILTIN_SAVEREGS(ARGLIST)                               \
        !           902:   (emit_insn (gen_rtx (USE, VOIDmode, gen_rtx (REG, TImode, 24))),     \
        !           903:    emit_insn (gen_rtx (USE, VOIDmode, gen_rtx (REG, DImode, 28))),     \
        !           904:    expand_call (exp, target, ignore))
        !           905: 
        !           906: /* Addressing modes, and classification of registers for them.  */
        !           907: 
        !           908: /* #define HAVE_POST_INCREMENT */
        !           909: /* #define HAVE_POST_DECREMENT */
        !           910: 
        !           911: /* #define HAVE_PRE_DECREMENT */
        !           912: /* #define HAVE_PRE_INCREMENT */
        !           913: 
        !           914: /* Macros to check register numbers against specific register classes.  */
        !           915: 
        !           916: /* These assume that REGNO is a hard or pseudo reg number.
        !           917:    They give nonzero only if REGNO is a hard reg of the suitable class
        !           918:    or a pseudo reg currently allocated to a suitable hard reg.
        !           919:    Since they use reg_renumber, they are safe only once reg_renumber
        !           920:    has been allocated, which happens in local-alloc.c.  */
        !           921: 
        !           922: #define REGNO_OK_FOR_INDEX_P(REGNO) \
        !           923: (((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32) && (REGNO) != 0)
        !           924: #define REGNO_OK_FOR_BASE_P(REGNO) \
        !           925: (((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32) && (REGNO) != 0)
        !           926: #define REGNO_OK_FOR_FP_P(REGNO) \
        !           927: (((REGNO) ^ 0x20) < 32 \
        !           928:  || (((REGNO) != 0) && (unsigned) (reg_renumber[REGNO] ^ 0x20) < 32))
        !           929: 
        !           930: /* Now macros that check whether X is a register and also,
        !           931:    strictly, whether it is in a specified class.
        !           932: 
        !           933:    These macros are specific to the SPARC, and may be used only
        !           934:    in code for printing assembler insns and in conditions for
        !           935:    define_optimization.  */
        !           936: 
        !           937: /* 1 if X is an fp register.  */
        !           938: 
        !           939: #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X)))
        !           940: 
        !           941: /* Maximum number of registers that can appear in a valid memory address.  */
        !           942: 
        !           943: #define MAX_REGS_PER_ADDRESS 2
        !           944: 
        !           945: /* Recognize any constant value that is a valid address.  */
        !           946: 
        !           947: #define CONSTANT_ADDRESS_P(X) (CONSTANT_P (X))
        !           948: 
        !           949: /* Nonzero if the constant value X is a legitimate general operand.
        !           950:    Anything can be made to work except floating point constants.  */
        !           951: 
        !           952: #define LEGITIMATE_CONSTANT_P(X) \
        !           953:   (GET_CODE (X) != CONST_DOUBLE || GET_MODE (X) == VOIDmode)
        !           954: 
        !           955: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
        !           956:    and check its validity for a certain class.
        !           957:    We have two alternate definitions for each of them.
        !           958:    The usual definition accepts all pseudo regs; the other rejects
        !           959:    them unless they have been allocated suitable hard regs.
        !           960:    The symbol REG_OK_STRICT causes the latter definition to be used.
        !           961: 
        !           962:    Most source files want to accept pseudo regs in the hope that
        !           963:    they will get allocated to the class that the insn wants them to be in.
        !           964:    Source files for reload pass need to be strict.
        !           965:    After reload, it makes no difference, since pseudo regs have
        !           966:    been eliminated by then.  */
        !           967: 
        !           968: /* Optional extra constraints for this machine.  Borrowed from romp.h.
        !           969: 
        !           970:    For the SPARC, `Q' means that this is a memory operand but not a
        !           971:    symbolic memory operand.  Note that an unassigned pseudo register
        !           972:    is such a memory operand.  Needed because reload will generate
        !           973:    these things in insns and then not re-recognize the insns, causing
        !           974:    constrain_operands to fail.
        !           975: 
        !           976:    `R' handles the LO_SUM which can be an address for `Q'.
        !           977: 
        !           978:    `S' handles constraints for calls.  */
        !           979: 
        !           980: #ifndef REG_OK_STRICT
        !           981: 
        !           982: /* Nonzero if X is a hard reg that can be used as an index
        !           983:    or if it is a pseudo reg.  */
        !           984: #define REG_OK_FOR_INDEX_P(X) (((unsigned) REGNO (X)) - 32 >= 32 && REGNO (X) != 0)
        !           985: /* Nonzero if X is a hard reg that can be used as a base reg
        !           986:    or if it is a pseudo reg.  */
        !           987: #define REG_OK_FOR_BASE_P(X) (((unsigned) REGNO (X)) - 32 >= 32 && REGNO (X) != 0)
        !           988: 
        !           989: #define EXTRA_CONSTRAINT(OP, C)                                \
        !           990:   ((C) == 'Q' ?                                                \
        !           991:    ((GET_CODE (OP) == MEM                              \
        !           992:      && memory_address_p (GET_MODE (OP), XEXP (OP, 0)) \
        !           993:      && ! symbolic_memory_operand (OP, VOIDmode)))     \
        !           994:    : ((C) == 'R' ?                                     \
        !           995:       (GET_CODE (OP) == LO_SUM                         \
        !           996:        && GET_CODE (XEXP (OP, 0)) == REG               \
        !           997:        && REG_OK_FOR_BASE_P (XEXP (OP, 0)))            \
        !           998:       : ((C) == 'S'                                    \
        !           999:         ? CONSTANT_P (OP) || memory_address_p (Pmode, OP) : 0)))
        !          1000: 
        !          1001: #else
        !          1002: 
        !          1003: /* Nonzero if X is a hard reg that can be used as an index.  */
        !          1004: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
        !          1005: /* Nonzero if X is a hard reg that can be used as a base reg.  */
        !          1006: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
        !          1007: 
        !          1008: #define EXTRA_CONSTRAINT(OP, C)                                \
        !          1009:   ((C) == 'Q' ?                                                \
        !          1010:    (GET_CODE (OP) == REG ?                             \
        !          1011:     (REGNO (OP) >= FIRST_PSEUDO_REGISTER               \
        !          1012:      && reg_renumber[REGNO (OP)] < 0)                  \
        !          1013:     : GET_CODE (OP) == MEM)                            \
        !          1014:    : ((C) == 'R' ?                                     \
        !          1015:       (GET_CODE (OP) == LO_SUM                         \
        !          1016:        && GET_CODE (XEXP (OP, 0)) == REG               \
        !          1017:        && REG_OK_FOR_BASE_P (XEXP (OP, 0)))            \
        !          1018:       : ((C) == 'S'                                    \
        !          1019:         ? (CONSTANT_P (OP)                             \
        !          1020:            || (GET_CODE (OP) == REG && reg_renumber[REGNO (OP)] > 0)\
        !          1021:            || strict_memory_address_p (Pmode, OP)) : 0)))
        !          1022: #endif
        !          1023: 
        !          1024: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
        !          1025:    that is a valid memory address for an instruction.
        !          1026:    The MODE argument is the machine mode for the MEM expression
        !          1027:    that wants to use this address.
        !          1028: 
        !          1029:    On SPARC, the actual legitimate addresses must be REG+REG or REG+SMALLINT
        !          1030:    ordinarily.  This changes a bit when generating PIC.
        !          1031: 
        !          1032:    If you change this, execute "rm explow.o recog.o reload.o".  */
        !          1033: 
        !          1034: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)                \
        !          1035: { if (GET_CODE (X) == REG)                             \
        !          1036:     { if (REG_OK_FOR_BASE_P (X)) goto ADDR; }          \
        !          1037:   else if (GET_CODE (X) == PLUS)                       \
        !          1038:     {                                                  \
        !          1039:       if (flag_pic && XEXP (X, 0) == pic_offset_table_rtx)\
        !          1040:        {                                               \
        !          1041:          if (GET_CODE (XEXP (X, 1)) == REG             \
        !          1042:              && REG_OK_FOR_BASE_P (XEXP (X, 1)))       \
        !          1043:            goto ADDR;                                  \
        !          1044:          else if (flag_pic == 1                        \
        !          1045:                   && GET_CODE (XEXP (X, 1)) != REG     \
        !          1046:                   && GET_CODE (XEXP (X, 1)) != LO_SUM  \
        !          1047:                   && GET_CODE (XEXP (X, 1)) != MEM)    \
        !          1048:            goto ADDR;                                  \
        !          1049:        }                                               \
        !          1050:       else if (GET_CODE (XEXP (X, 0)) == REG           \
        !          1051:          && REG_OK_FOR_BASE_P (XEXP (X, 0)))           \
        !          1052:        {                                               \
        !          1053:          if (GET_CODE (XEXP (X, 1)) == REG             \
        !          1054:              && REG_OK_FOR_INDEX_P (XEXP (X, 1)))      \
        !          1055:            goto ADDR;                                  \
        !          1056:          if (GET_CODE (XEXP (X, 1)) == CONST_INT       \
        !          1057:              && INTVAL (XEXP (X, 1)) >= -0x1000        \
        !          1058:              && INTVAL (XEXP (X, 1)) < 0x1000)         \
        !          1059:            goto ADDR;                                  \
        !          1060:        }                                               \
        !          1061:       else if (GET_CODE (XEXP (X, 1)) == REG           \
        !          1062:          && REG_OK_FOR_BASE_P (XEXP (X, 1)))           \
        !          1063:        {                                               \
        !          1064:          if (GET_CODE (XEXP (X, 0)) == REG             \
        !          1065:              && REG_OK_FOR_INDEX_P (XEXP (X, 0)))      \
        !          1066:            goto ADDR;                                  \
        !          1067:          if (GET_CODE (XEXP (X, 0)) == CONST_INT       \
        !          1068:              && INTVAL (XEXP (X, 0)) >= -0x1000        \
        !          1069:              && INTVAL (XEXP (X, 0)) < 0x1000)         \
        !          1070:            goto ADDR;                                  \
        !          1071:        }                                               \
        !          1072:     }                                                  \
        !          1073:   else if (GET_CODE (X) == LO_SUM                      \
        !          1074:           && GET_CODE (XEXP (X, 0)) == REG             \
        !          1075:           && REG_OK_FOR_BASE_P (XEXP (X, 0))           \
        !          1076:           && CONSTANT_P (XEXP (X, 1)))                 \
        !          1077:     goto ADDR;                                         \
        !          1078:   else if (GET_CODE (X) == LO_SUM                      \
        !          1079:           && GET_CODE (XEXP (X, 0)) == SUBREG          \
        !          1080:           && GET_CODE (SUBREG_REG (XEXP (X, 0))) == REG\
        !          1081:           && REG_OK_FOR_BASE_P (SUBREG_REG (XEXP (X, 0)))\
        !          1082:           && CONSTANT_P (XEXP (X, 1)))                 \
        !          1083:     goto ADDR;                                         \
        !          1084:   else if (GET_CODE (X) == CONST_INT && SMALL_INT (X)) \
        !          1085:     goto ADDR;                                         \
        !          1086: }
        !          1087: 
        !          1088: /* Try machine-dependent ways of modifying an illegitimate address
        !          1089:    to be legitimate.  If we find one, return the new, valid address.
        !          1090:    This macro is used in only one place: `memory_address' in explow.c.
        !          1091: 
        !          1092:    OLDX is the address as it was before break_out_memory_refs was called.
        !          1093:    In some cases it is useful to look at this to decide what needs to be done.
        !          1094: 
        !          1095:    MODE and WIN are passed so that this macro can use
        !          1096:    GO_IF_LEGITIMATE_ADDRESS.
        !          1097: 
        !          1098:    It is always safe for this macro to do nothing.  It exists to recognize
        !          1099:    opportunities to optimize the output.  */
        !          1100: 
        !          1101: /* On SPARC, change REG+N into REG+REG, and REG+(X*Y) into REG+REG.  */
        !          1102: extern struct rtx_def *legitimize_pic_address ();
        !          1103: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN)    \
        !          1104: { rtx sparc_x = (X);                                           \
        !          1105:   if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == MULT)  \
        !          1106:     (X) = gen_rtx (PLUS, Pmode, XEXP (X, 1),                   \
        !          1107:                   force_operand (XEXP (X, 0), 0));             \
        !          1108:   if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == MULT)  \
        !          1109:     (X) = gen_rtx (PLUS, Pmode, XEXP (X, 0),                   \
        !          1110:                   force_operand (XEXP (X, 1), 0));             \
        !          1111:   if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 0)) == PLUS)  \
        !          1112:     (X) = gen_rtx (PLUS, Pmode, force_operand (XEXP (X, 0), 0),\
        !          1113:                   XEXP (X, 1));                                \
        !          1114:   if (GET_CODE (X) == PLUS && GET_CODE (XEXP (X, 1)) == PLUS)  \
        !          1115:     (X) = gen_rtx (PLUS, Pmode, XEXP (X, 0),                   \
        !          1116:                   force_operand (XEXP (X, 1), 0));             \
        !          1117:   if (sparc_x != (X) && memory_address_p (MODE, X))            \
        !          1118:     goto WIN;                                                  \
        !          1119:   if (flag_pic) (X) = legitimize_pic_address (X, MODE, 0, 0);  \
        !          1120:   else if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 1)))   \
        !          1121:     (X) = gen_rtx (PLUS, Pmode, XEXP (X, 0),                   \
        !          1122:                   copy_to_mode_reg (Pmode, XEXP (X, 1)));      \
        !          1123:   else if (GET_CODE (X) == PLUS && CONSTANT_ADDRESS_P (XEXP (X, 0)))   \
        !          1124:     (X) = gen_rtx (PLUS, Pmode, XEXP (X, 1),                   \
        !          1125:                   copy_to_mode_reg (Pmode, XEXP (X, 0)));      \
        !          1126:   else if (GET_CODE (X) == SYMBOL_REF || GET_CODE (X) == CONST \
        !          1127:           || GET_CODE (X) == LABEL_REF)                        \
        !          1128:     (X) = gen_rtx (LO_SUM, Pmode,                              \
        !          1129:                   copy_to_mode_reg (Pmode, gen_rtx (HIGH, Pmode, X)), X); \
        !          1130:   if (memory_address_p (MODE, X))                              \
        !          1131:     goto WIN; }
        !          1132: 
        !          1133: /* Go to LABEL if ADDR (a legitimate address expression)
        !          1134:    has an effect that depends on the machine mode it is used for.
        !          1135:    On the SPARC this is never true.  */
        !          1136: 
        !          1137: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)
        !          1138: 
        !          1139: /* Specify the machine mode that this machine uses
        !          1140:    for the index in the tablejump instruction.  */
        !          1141: #define CASE_VECTOR_MODE SImode
        !          1142: 
        !          1143: /* Define this if the tablejump instruction expects the table
        !          1144:    to contain offsets from the address of the table.
        !          1145:    Do not define this if the table should contain absolute addresses.  */
        !          1146: /* #define CASE_VECTOR_PC_RELATIVE */
        !          1147: 
        !          1148: /* Specify the tree operation to be used to convert reals to integers.  */
        !          1149: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
        !          1150: 
        !          1151: /* This is the kind of divide that is easiest to do in the general case.  */
        !          1152: #define EASY_DIV_EXPR TRUNC_DIV_EXPR
        !          1153: 
        !          1154: /* Define this as 1 if `char' should by default be signed; else as 0.  */
        !          1155: #define DEFAULT_SIGNED_CHAR 1
        !          1156: 
        !          1157: /* Max number of bytes we can move from memory to memory
        !          1158:    in one reasonably fast instruction.  */
        !          1159: #define MOVE_MAX 4
        !          1160: 
        !          1161: /* Define if normal loads of shorter-than-word items from memory clears
        !          1162:    the rest of the bigs in the register.  */
        !          1163: #define BYTE_LOADS_ZERO_EXTEND
        !          1164: 
        !          1165: /* Nonzero if access to memory by bytes is slow and undesirable.
        !          1166:    For RISC chips, it means that access to memory by bytes is no
        !          1167:    better than access by words when possible, so grab a whole word
        !          1168:    and maybe make use of that.  */
        !          1169: #define SLOW_BYTE_ACCESS 1
        !          1170: 
        !          1171: /* We assume that the store-condition-codes instructions store 0 for false
        !          1172:    and some other value for true.  This is the value stored for true.  */
        !          1173: 
        !          1174: #define STORE_FLAG_VALUE 1
        !          1175: 
        !          1176: /* When a prototype says `char' or `short', really pass an `int'.  */
        !          1177: #define PROMOTE_PROTOTYPES
        !          1178: 
        !          1179: /* Define if shifts truncate the shift count
        !          1180:    which implies one can omit a sign-extension or zero-extension
        !          1181:    of a shift count.  */
        !          1182: #define SHIFT_COUNT_TRUNCATED
        !          1183: 
        !          1184: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
        !          1185:    is done just by pretending it is already truncated.  */
        !          1186: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
        !          1187: 
        !          1188: /* Specify the machine mode that pointers have.
        !          1189:    After generation of rtl, the compiler makes no further distinction
        !          1190:    between pointers and any other objects of this machine mode.  */
        !          1191: #define Pmode SImode
        !          1192: 
        !          1193: /* Add any extra modes needed to represent the condition code.
        !          1194: 
        !          1195:    On the Sparc, we have a "no-overflow" mode which is used when an add or
        !          1196:    subtract insn is used to set the condition code.  Different branches are
        !          1197:    used in this case for some operations.
        !          1198: 
        !          1199:    We also have a mode to indicate that the relevant condition code is
        !          1200:    in the floating-point condition code.  This really should be a separate
        !          1201:    register, but we don't want to go to 65 registers.  */
        !          1202: #define EXTRA_CC_MODES CC_NOOVmode, CCFPmode
        !          1203: 
        !          1204: /* Define the names for the modes specified above.  */
        !          1205: #define EXTRA_CC_NAMES "CC_NOOV", "CCFP"
        !          1206: 
        !          1207: /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
        !          1208:    return the mode to be used for the comparison.  For floating-point, CCFPmode
        !          1209:    should be used.  CC_NOOVmode should be used when the first operand is a
        !          1210:    PLUS, MINUS, or NEG.  CCmode should be used when no special processing is
        !          1211:    needed.  */
        !          1212: #define SELECT_CC_MODE(OP,X) \
        !          1213:   (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT ? CCFPmode                  \
        !          1214:    : (GET_CODE (X) == PLUS || GET_CODE (X) == MINUS || GET_CODE (X) == NEG) \
        !          1215:    ? CC_NOOVmode : CCmode)
        !          1216: 
        !          1217: /* A function address in a call instruction
        !          1218:    is a byte address (for indexing purposes)
        !          1219:    so give the MEM rtx a byte's mode.  */
        !          1220: #define FUNCTION_MODE SImode
        !          1221: 
        !          1222: /* Define this if addresses of constant functions
        !          1223:    shouldn't be put through pseudo regs where they can be cse'd.
        !          1224:    Desirable on machines where ordinary constants are expensive
        !          1225:    but a CALL with constant address is cheap.  */
        !          1226: #define NO_FUNCTION_CSE
        !          1227: 
        !          1228: /* alloca should avoid clobbering the old register save area.  */
        !          1229: #define SETJMP_VIA_SAVE_AREA
        !          1230: 
        !          1231: /* Define subroutines to call to handle multiply and divide.
        !          1232:    Use the subroutines that Sun's library provides.
        !          1233:    The `*' prevents an underscore from being prepended by the compiler.  */
        !          1234: 
        !          1235: #define DIVSI3_LIBCALL "*.div"
        !          1236: #define UDIVSI3_LIBCALL "*.udiv"
        !          1237: #define MODSI3_LIBCALL "*.rem"
        !          1238: #define UMODSI3_LIBCALL "*.urem"
        !          1239: /* .umul is a little faster than .mul.  */
        !          1240: #define MULSI3_LIBCALL "*.umul"
        !          1241: 
        !          1242: /* Compute the cost of computing a constant rtl expression RTX
        !          1243:    whose rtx-code is CODE.  The body of this macro is a portion
        !          1244:    of a switch statement.  If the code is computed here,
        !          1245:    return it with a return statement.  Otherwise, break from the switch.  */
        !          1246: 
        !          1247: #define CONST_COSTS(RTX,CODE) \
        !          1248:   case CONST_INT:                                              \
        !          1249:     if (INTVAL (RTX) == 0)                                     \
        !          1250:       return 0;                                                        \
        !          1251:     if (INTVAL (RTX) < 0x1000 && INTVAL (RTX) >= -0x1000)      \
        !          1252:       return 1;                                                        \
        !          1253:   case HIGH:                                                   \
        !          1254:     return 2;                                                  \
        !          1255:   case CONST:                                                  \
        !          1256:   case LABEL_REF:                                              \
        !          1257:   case SYMBOL_REF:                                             \
        !          1258:     return 4;                                                  \
        !          1259:   case CONST_DOUBLE:                                           \
        !          1260:     if (GET_MODE (RTX) == DImode)                              \
        !          1261:       if ((XINT (RTX, 3) == 0                                  \
        !          1262:           && (unsigned) XINT (RTX, 2) < 0x1000)                \
        !          1263:          || (XINT (RTX, 3) == -1                               \
        !          1264:              && XINT (RTX, 2) < 0                              \
        !          1265:              && XINT (RTX, 2) >= -0x1000))                     \
        !          1266:        return 1;                                               \
        !          1267:     return 8;
        !          1268: 
        !          1269: /* SPARC offers addressing modes which are "as cheap as a register".
        !          1270:    See sparc.c (or gcc.texinfo) for details.  */
        !          1271: 
        !          1272: #define ADDRESS_COST(RTX) \
        !          1273:   (GET_CODE (RTX) == REG ? 1 : sparc_address_cost (RTX))
        !          1274: 
        !          1275: /* Compute extra cost of moving data between one register class
        !          1276:    and another.  */
        !          1277: #define REGISTER_MOVE_COST(CLASS1, CLASS2) \
        !          1278:   (((CLASS1 == FP_REGS && CLASS2 == GENERAL_REGS) \
        !          1279:     || (CLASS1 == GENERAL_REGS && CLASS2 == FP_REGS)) ? 6 : 2)
        !          1280: 
        !          1281: /* Provide the costs of a rtl expression.  This is in the body of a
        !          1282:    switch on CODE.  The purpose for the cost of MULT is to encourage
        !          1283:    `synth_mult' to find a synthetic multiply when reasonable.
        !          1284: 
        !          1285:    If we need more than 12 insns to do a multiply, then go out-of-line,
        !          1286:    since the call overhead will be < 10% of the cost of the multiply.  */
        !          1287: 
        !          1288: #define RTX_COSTS(X,CODE)                              \
        !          1289:   case MULT:                                           \
        !          1290:     return COSTS_N_INSNS (25);                         \
        !          1291:   case DIV:                                            \
        !          1292:   case UDIV:                                           \
        !          1293:   case MOD:                                            \
        !          1294:   case UMOD:                                           \
        !          1295:     return COSTS_N_INSNS (20);                         \
        !          1296:   /* Make FLOAT more expensive than CONST_DOUBLE,      \
        !          1297:      so that cse will favor the latter.  */            \
        !          1298:   case FLOAT:                                          \
        !          1299:     return 19;
        !          1300: 
        !          1301: /* Conditional branches with empty delay slots have a length of two.  */
        !          1302: #define ADJUST_INSN_LENGTH(INSN, LENGTH)       \
        !          1303:   if (GET_CODE (INSN) == CALL_INSN                                     \
        !          1304:       || (GET_CODE (INSN) == JUMP_INSN && ! simplejump_p (insn)))      \
        !          1305:     LENGTH += 1;
        !          1306: 
        !          1307: /* Control the assembler format that we output.  */
        !          1308: 
        !          1309: /* Output at beginning of assembler file.  */
        !          1310: 
        !          1311: #define ASM_FILE_START(file)
        !          1312: 
        !          1313: /* Output to assembler file text saying following lines
        !          1314:    may contain character constants, extra white space, comments, etc.  */
        !          1315: 
        !          1316: #define ASM_APP_ON ""
        !          1317: 
        !          1318: /* Output to assembler file text saying following lines
        !          1319:    no longer contain unusual constructs.  */
        !          1320: 
        !          1321: #define ASM_APP_OFF ""
        !          1322: 
        !          1323: /* Output before read-only data.  */
        !          1324: 
        !          1325: #define TEXT_SECTION_ASM_OP ".text"
        !          1326: 
        !          1327: /* Output before writable data.  */
        !          1328: 
        !          1329: #define DATA_SECTION_ASM_OP ".data"
        !          1330: 
        !          1331: /* How to refer to registers in assembler output.
        !          1332:    This sequence is indexed by compiler's hard-register-number (see above).  */
        !          1333: 
        !          1334: #define REGISTER_NAMES \
        !          1335: {"%g0", "%g1", "%g2", "%g3", "%g4", "%g5", "%g6", "%g7",               \
        !          1336:  "%o0", "%o1", "%o2", "%o3", "%o4", "%o5", "%sp", "%o7",               \
        !          1337:  "%l0", "%l1", "%l2", "%l3", "%l4", "%l5", "%l6", "%l7",               \
        !          1338:  "%i0", "%i1", "%i2", "%i3", "%i4", "%i5", "%fp", "%i7",               \
        !          1339:  "%f0", "%f1", "%f2", "%f3", "%f4", "%f5", "%f6", "%f7",               \
        !          1340:  "%f8", "%f9", "%f10", "%f11", "%f12", "%f13", "%f14", "%f15",         \
        !          1341:  "%f16", "%f17", "%f18", "%f19", "%f20", "%f21", "%f22", "%f23",       \
        !          1342:  "%f24", "%f25", "%f26", "%f27", "%f28", "%f29", "%f30", "%f31"}
        !          1343: 
        !          1344: /* How to renumber registers for dbx and gdb.  */
        !          1345: 
        !          1346: #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
        !          1347: 
        !          1348: /* On Sun 4, this limit is 2048.  We use 1500 to be safe,
        !          1349:    since the length can run past this up to a continuation point.  */
        !          1350: #define DBX_CONTIN_LENGTH 1500
        !          1351: 
        !          1352: /* This is how to output a note to DBX telling it the line number
        !          1353:    to which the following sequence of instructions corresponds.
        !          1354: 
        !          1355:    This is needed for SunOS 4.0, and should not hurt for 3.2
        !          1356:    versions either.  */
        !          1357: #define ASM_OUTPUT_SOURCE_LINE(file, line)             \
        !          1358:   { static int sym_lineno = 1;                         \
        !          1359:     fprintf (file, ".stabn 68,0,%d,LM%d\nLM%d:\n",     \
        !          1360:             line, sym_lineno, sym_lineno);             \
        !          1361:     sym_lineno += 1; }
        !          1362: 
        !          1363: /* This is how to output the definition of a user-level label named NAME,
        !          1364:    such as the label on a static function or variable NAME.  */
        !          1365: 
        !          1366: #define ASM_OUTPUT_LABEL(FILE,NAME)    \
        !          1367:   do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
        !          1368: 
        !          1369: /* This is how to output a command to make the user-level label named NAME
        !          1370:    defined for reference from other files.  */
        !          1371: 
        !          1372: #define ASM_GLOBALIZE_LABEL(FILE,NAME) \
        !          1373:   do { fputs ("\t.global ", FILE); assemble_name (FILE, NAME); fputs ("\n", FILE);} while (0)
        !          1374: 
        !          1375: /* This is how to output a reference to a user-level label named NAME.
        !          1376:    `assemble_name' uses this.  */
        !          1377: 
        !          1378: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
        !          1379:   fprintf (FILE, "_%s", NAME)
        !          1380: 
        !          1381: /* This is how to output an internal numbered label where
        !          1382:    PREFIX is the class of label and NUM is the number within the class.  */
        !          1383: 
        !          1384: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)     \
        !          1385:   fprintf (FILE, "%s%d:\n", PREFIX, NUM)
        !          1386: 
        !          1387: /* This is how to store into the string LABEL
        !          1388:    the symbol_ref name of an internal numbered label where
        !          1389:    PREFIX is the class of label and NUM is the number within the class.
        !          1390:    This is suitable for output with `assemble_name'.  */
        !          1391: 
        !          1392: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)  \
        !          1393:   sprintf (LABEL, "*%s%d", PREFIX, NUM)
        !          1394: 
        !          1395: /* This is how to output an assembler line defining a `double' constant.  */
        !          1396: 
        !          1397: #define ASM_OUTPUT_DOUBLE(FILE,VALUE)                                  \
        !          1398:   {                                                                    \
        !          1399:     if (REAL_VALUE_ISINF (VALUE))                                      \
        !          1400:       fprintf (FILE, "\t.double 0r%s99e999\n", (VALUE) > 0 ? "" : "-");        \
        !          1401:     else if (isnan (VALUE))                                            \
        !          1402:       {                                                                        \
        !          1403:        union { double d; long l[2];} t;                                \
        !          1404:        t.d = (VALUE);                                                  \
        !          1405:        fprintf (FILE, "\t.word 0x%lx\n\t.word 0x%lx\n", t.l[0], t.l[1]); \
        !          1406:       }                                                                        \
        !          1407:     else                                                               \
        !          1408:       fprintf (FILE, "\t.double 0r%.17g\n", VALUE);                    \
        !          1409:   }
        !          1410: 
        !          1411: /* This is how to output an assembler line defining a `float' constant.  */
        !          1412: 
        !          1413: #define ASM_OUTPUT_FLOAT(FILE,VALUE)                                   \
        !          1414:   {                                                                    \
        !          1415:     if (REAL_VALUE_ISINF (VALUE))                                      \
        !          1416:       fprintf (FILE, "\t.single 0r%s99e999\n", (VALUE) > 0 ? "" : "-");        \
        !          1417:     else if (isnan (VALUE))                                            \
        !          1418:       {                                                                        \
        !          1419:        union { float f; long l;} t;                                    \
        !          1420:        t.f = (VALUE);                                                  \
        !          1421:        fprintf (FILE, "\t.word 0x%lx\n", t.l);                         \
        !          1422:       }                                                                        \
        !          1423:     else                                                               \
        !          1424:       fprintf (FILE, "\t.single 0r%.9g\n", VALUE);                     \
        !          1425:   }
        !          1426: 
        !          1427: /* This is how to output an assembler line defining an `int' constant.  */
        !          1428: 
        !          1429: #define ASM_OUTPUT_INT(FILE,VALUE)  \
        !          1430: ( fprintf (FILE, "\t.word "),                  \
        !          1431:   output_addr_const (FILE, (VALUE)),           \
        !          1432:   fprintf (FILE, "\n"))
        !          1433: 
        !          1434: /* This is how to output an assembler line defining a DImode constant.  */
        !          1435: #define ASM_OUTPUT_DOUBLE_INT(FILE,VALUE)  \
        !          1436:   output_double_int (FILE, VALUE)
        !          1437: 
        !          1438: /* Likewise for `char' and `short' constants.  */
        !          1439: 
        !          1440: #define ASM_OUTPUT_SHORT(FILE,VALUE)  \
        !          1441: ( fprintf (FILE, "\t.half "),                  \
        !          1442:   output_addr_const (FILE, (VALUE)),           \
        !          1443:   fprintf (FILE, "\n"))
        !          1444: 
        !          1445: #define ASM_OUTPUT_CHAR(FILE,VALUE)  \
        !          1446: ( fprintf (FILE, "\t.byte "),                  \
        !          1447:   output_addr_const (FILE, (VALUE)),           \
        !          1448:   fprintf (FILE, "\n"))
        !          1449: 
        !          1450: /* This is how to output an assembler line for a numeric constant byte.  */
        !          1451: 
        !          1452: #define ASM_OUTPUT_BYTE(FILE,VALUE)  \
        !          1453:   fprintf (FILE, "\t.byte 0x%x\n", (VALUE))
        !          1454: 
        !          1455: /* This is how to output an element of a case-vector that is absolute.  */
        !          1456: 
        !          1457: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
        !          1458:   fprintf (FILE, "\t.word L%d\n", VALUE)
        !          1459: 
        !          1460: /* This is how to output an element of a case-vector that is relative.
        !          1461:    (SPARC uses such vectors only when generating PIC.)  */
        !          1462: 
        !          1463: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)  \
        !          1464:   fprintf (FILE, "\t.word L%d-1b\n", VALUE)
        !          1465: 
        !          1466: /* This is how to output an assembler line
        !          1467:    that says to advance the location counter
        !          1468:    to a multiple of 2**LOG bytes.  */
        !          1469: 
        !          1470: #define ASM_OUTPUT_ALIGN(FILE,LOG)     \
        !          1471:   if ((LOG) != 0)                      \
        !          1472:     fprintf (FILE, "\t.align %d\n", (1<<(LOG)))
        !          1473: 
        !          1474: #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
        !          1475:   fprintf (FILE, "\t.skip %u\n", (SIZE))
        !          1476: 
        !          1477: /* This says how to output an assembler line
        !          1478:    to define a global common symbol.  */
        !          1479: 
        !          1480: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)  \
        !          1481: ( fputs ("\t.global ", (FILE)),                        \
        !          1482:   assemble_name ((FILE), (NAME)),              \
        !          1483:   fputs ("\n\t.common ", (FILE)),              \
        !          1484:   assemble_name ((FILE), (NAME)),              \
        !          1485:   fprintf ((FILE), ",%u,\"bss\"\n", (ROUNDED)))
        !          1486: 
        !          1487: /* This says how to output an assembler line
        !          1488:    to define a local common symbol.  */
        !          1489: 
        !          1490: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
        !          1491: ( fputs ("\n\t.reserve ", (FILE)),             \
        !          1492:   assemble_name ((FILE), (NAME)),              \
        !          1493:   fprintf ((FILE), ",%u,\"bss\"\n", (ROUNDED)))
        !          1494: 
        !          1495: /* Store in OUTPUT a string (made with alloca) containing
        !          1496:    an assembler-name for a local static variable named NAME.
        !          1497:    LABELNO is an integer which is different for each call.  */
        !          1498: 
        !          1499: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
        !          1500: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10),   \
        !          1501:   sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
        !          1502: 
        !          1503: /* Define the parentheses used to group arithmetic operations
        !          1504:    in assembler code.  */
        !          1505: 
        !          1506: #define ASM_OPEN_PAREN "("
        !          1507: #define ASM_CLOSE_PAREN ")"
        !          1508: 
        !          1509: /* Define results of standard character escape sequences.  */
        !          1510: #define TARGET_BELL 007
        !          1511: #define TARGET_BS 010
        !          1512: #define TARGET_TAB 011
        !          1513: #define TARGET_NEWLINE 012
        !          1514: #define TARGET_VT 013
        !          1515: #define TARGET_FF 014
        !          1516: #define TARGET_CR 015
        !          1517: 
        !          1518: #define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \
        !          1519:   ((CHAR) == '@' || (CHAR) == '#' || (CHAR) == '*' || (CHAR) == '^')
        !          1520: 
        !          1521: /* Print operand X (an rtx) in assembler syntax to file FILE.
        !          1522:    CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
        !          1523:    For `%' followed by punctuation, CODE is the punctuation and X is null.  */
        !          1524: 
        !          1525: #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)
        !          1526: 
        !          1527: /* Print a memory address as an operand to reference that memory location.  */
        !          1528: 
        !          1529: #define PRINT_OPERAND_ADDRESS(FILE, ADDR)  \
        !          1530: { register rtx base, index = 0;                                        \
        !          1531:   int offset = 0;                                              \
        !          1532:   register rtx addr = ADDR;                                    \
        !          1533:   if (GET_CODE (addr) == REG)                                  \
        !          1534:     fputs (reg_names[REGNO (addr)], FILE);                     \
        !          1535:   else if (GET_CODE (addr) == PLUS)                            \
        !          1536:     {                                                          \
        !          1537:       if (GET_CODE (XEXP (addr, 0)) == CONST_INT)              \
        !          1538:        offset = INTVAL (XEXP (addr, 0)), base = XEXP (addr, 1);\
        !          1539:       else if (GET_CODE (XEXP (addr, 1)) == CONST_INT)         \
        !          1540:        offset = INTVAL (XEXP (addr, 1)), base = XEXP (addr, 0);\
        !          1541:       else                                                     \
        !          1542:        base = XEXP (addr, 0), index = XEXP (addr, 1);          \
        !          1543:       fputs (reg_names[REGNO (base)], FILE);                   \
        !          1544:       if (index == 0)                                          \
        !          1545:        fprintf (FILE, "%+d", offset);                          \
        !          1546:       else if (GET_CODE (index) == REG)                                \
        !          1547:        fprintf (FILE, "+%s", reg_names[REGNO (index)]);        \
        !          1548:       else if (GET_CODE (index) == SYMBOL_REF)                 \
        !          1549:        fputc ('+', FILE), output_addr_const (FILE, index);     \
        !          1550:       else abort ();                                           \
        !          1551:     }                                                          \
        !          1552:   else if (GET_CODE (addr) == MINUS                            \
        !          1553:           && GET_CODE (XEXP (addr, 1)) == LABEL_REF)           \
        !          1554:     {                                                          \
        !          1555:       output_addr_const (FILE, XEXP (addr, 0));                        \
        !          1556:       fputs ("-(", FILE);                                      \
        !          1557:       output_addr_const (FILE, XEXP (addr, 1));                        \
        !          1558:       fputs ("-.)", FILE);                                     \
        !          1559:     }                                                          \
        !          1560:   else if (GET_CODE (addr) == LO_SUM)                          \
        !          1561:     {                                                          \
        !          1562:       output_operand (XEXP (addr, 0), 0);                      \
        !          1563:       fputs ("+%lo(", FILE);                                   \
        !          1564:       output_address (XEXP (addr, 1));                         \
        !          1565:       fputc (')', FILE);                                       \
        !          1566:     }                                                          \
        !          1567:   else if (flag_pic && GET_CODE (addr) == CONST                        \
        !          1568:           && GET_CODE (XEXP (addr, 0)) == MINUS                \
        !          1569:           && GET_CODE (XEXP (XEXP (addr, 0), 1)) == CONST      \
        !          1570:           && GET_CODE (XEXP (XEXP (XEXP (addr, 0), 1), 0)) == MINUS    \
        !          1571:           && XEXP (XEXP (XEXP (XEXP (addr, 0), 1), 0), 1) == pc_rtx)   \
        !          1572:     {                                                          \
        !          1573:       addr = XEXP (addr, 0);                                   \
        !          1574:       output_addr_const (FILE, XEXP (addr, 0));                        \
        !          1575:       /* Group the args of the second CONST in parenthesis.  */        \
        !          1576:       fputs ("-(", FILE);                                      \
        !          1577:       /* Skip past the second CONST--it does nothing for us.  */\
        !          1578:       output_addr_const (FILE, XEXP (XEXP (addr, 1), 0));      \
        !          1579:       /* Close the parenthesis.  */                            \
        !          1580:       fputc (')', FILE);                                       \
        !          1581:     }                                                          \
        !          1582:   else                                                         \
        !          1583:     {                                                          \
        !          1584:       output_addr_const (FILE, addr);                          \
        !          1585:     }                                                          \
        !          1586: }
        !          1587: 
        !          1588: /* Declare functions defined in sparc.c and used in templates.  */
        !          1589: 
        !          1590: extern char *singlemove_string ();
        !          1591: extern char *output_move_double ();
        !          1592: extern char *output_fp_move_double ();
        !          1593: extern char *output_block_move ();
        !          1594: extern char *output_scc_insn ();
        !          1595: extern char *output_cbranch ();
        !          1596: extern char *output_return ();
        !          1597: extern char *output_floatsisf2 ();
        !          1598: extern char *output_floatsidf2 ();
        !          1599: 
        !          1600: /* Defined in flags.h, but insn-emit.c does not include flags.h.  */
        !          1601: 
        !          1602: extern int flag_pic;

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