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Annotation of gcc/config/tm-mips.h, revision 1.1

1.1     ! root        1: /* Definitions of target machine for GNU compiler.  MIPS version.
        !             2:    Contributed by   A. Lichnewsky, [email protected]
        !             3:    Copyright (C) 1989 Free Software Foundation, Inc.
        !             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 1, 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: /* ??? This file needs to be reformatted so that it looks like the
        !            22:    rest of GCC. ???  */
        !            23: 
        !            24: /* Names to predefine in the preprocessor for this target machine.  */
        !            25: 
        !            26: #define CPP_PREDEFINES "-Dmips -Dunix"
        !            27: 
        !            28: /*----------------------------------------------------------------------
        !            29: 
        !            30: SWITCHES:
        !            31: 
        !            32:     -O    optimization. Implies -fstrength-reduce -fomit-frame-pointer
        !            33:     -O2   optimization. Implies -O
        !            34: 
        !            35:           Tries to make use of short displacements using the
        !            36:           Sdata and Sbss sections. This uses the -G switches of as and ld.
        !            37: 
        !            38:     -G <size>
        !            39:           Pass size to as and ld. Default -G 8.
        !            40: 
        !            41:     -mG0 -mG1 -mG2
        !            42:           Construct a size to be passed to GCC for Data / Sdata selection.
        !            43: 
        !            44:           Value is ( (i=G0 + 2 G1 + 4 G2) , (i < 6) ? ( 1<<i) :(1 <<(i+3)))
        !            45:           Same value should be passed to as + ld using -G.
        !            46: 
        !            47:          Default = -mG1 -mG0 (Value = 8).
        !            48: 
        !            49:     -G32  Implies -G 32 -mG2 -mnG1 -mG0.
        !            50: 
        !            51: 
        !            52:     -bestGnum
        !            53:           Pass -bestGnum flag to ld. This helps setting best value for
        !            54:           the -G parameter.
        !            55: 
        !            56:     -SSYSV  for RISC-OS: use the System V environment
        !            57:     -SBSD43 for RISC-OS: use the BSD 4.3  environment
        !            58: ----------------------------------------------------------------------*/
        !            59: 
        !            60: 
        !            61: 
        !            62: /***********************************************************************
        !            63: 
        !            64: WARNING:
        !            65: 
        !            66:     No attempt to select (configure) the -B and -I parameters has been
        !            67:     made inside this version of gcc. They should be made (eg. thru a
        !            68:     shell script).
        !            69: 
        !            70:     -I should be set in such a way that the include file "va-mips.h"
        !            71:     gets included (via "varargs.h") for varargs. Otherwise gcc will not
        !            72:     bootstrap -- and produce wrong code for varargs.
        !            73: 
        !            74: 
        !            75: ***********************************************************************/
        !            76: 
        !            77: 
        !            78: /* Switch  Recognition by gcc.c   */
        !            79: 
        !            80: #ifdef SWITCH_TAKES_ARG
        !            81: #undef SWITCH_TAKES_ARG
        !            82: #endif
        !            83: 
        !            84: #define SWITCH_TAKES_ARG(CHAR)      \
        !            85:   ((CHAR) == 'D' || (CHAR) == 'U' || (CHAR) == 'o' \
        !            86:    || (CHAR) == 'e' || (CHAR) == 'T' || (CHAR) == 'u' \
        !            87:    || (CHAR) == 'I' || (CHAR) == 'Y' || (CHAR) == 'm' \
        !            88:    || (CHAR) == 'L' || (CHAR) == 'i' || (CHAR) == 'A' \
        !            89:    || (CHAR) == 'G')
        !            90: 
        !            91: 
        !            92: /* Extra switches sometimes passed to the assembler.  */
        !            93: 
        !            94: /* #define ASM_SPEC   "%{O:-O2} %{O2: -O2} %{!G32: %{G*}}                      \
        !            95: %{!G:%{!G32: -G 8}} %{G32: -G 32}" */
        !            96: #define ASM_SPEC   "-nocpp %{O:-O2} %{O2: -O2} %{!G32: %{G*}} \
        !            97: %{!G:%{!G32: -G 8}} %{G32: -G 32}"
        !            98: 
        !            99: /* Extra switches sometimes passed to the loader.  */
        !           100: 
        !           101: 
        !           102: #if defined(MIPS_SYSV)         /* RISC-OS SYSTEM V */
        !           103: 
        !           104: #define STARTFILE_SPEC                                         \
        !           105:   "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt1.o%s crtn.o%s}}"
        !           106: 
        !           107: #define LINK_SPEC  "%{!G32:%{G*}                                       \
        !           108: %{!G:%{!G32:%{mG0:%eYou should include ld/as option -G}                        \
        !           109: %{mG1:%eYou should include ld/as option -G}                            \
        !           110: %{mG2:%eYou should include ld/as option -G}                            \
        !           111:  -G 8}}}                                                               \
        !           112: %{G32: -G 32}                                                          \
        !           113: %{bestGnum: -bestGnum}                                                 \
        !           114: %{!ZBSD43:-systype /sysv/}%{ZBSD43:-systype /bsd43/}                   \
        !           115: "
        !           116: 
        !           117: #else
        !           118: #if defined(MIPS_BSD43)                /* RISC-OS BSD */
        !           119: 
        !           120: #define STARTFILE_SPEC                                                 \
        !           121:   "%{pg:gcrt0.o%s}%{!pg:%{p:mcrt0.o%s}%{!p:crt1.o%s crtn.o%s}}"
        !           122: 
        !           123: #define LINK_SPEC  "%{!G32:%{G*}                                       \
        !           124: %{!G:%{!G32:%{mG0:%eYou should include ld/as option -G}                        \
        !           125: %{mG1:%eYou should include ld/as option -G}                            \
        !           126: %{mG2:%eYou should include ld/as option -G}                            \
        !           127:  -G 8}}}                                                               \
        !           128: %{G32: -G 32}                                                          \
        !           129: %{bestGnum: -bestGnum}                                                 \
        !           130: %{!ZSYSV:-systype /bsd43/}%{ZSYSV:-systype /sysv/}"
        !           131: 
        !           132: #else          /* Default for MIPS BSD and ULTRIX */
        !           133: 
        !           134: #define LINK_SPEC  "%{!G32:%{G*}                                       \
        !           135: %{!G:%{!G32:%{mG0:%eYou should include ld/as option -G}                \
        !           136: %{mG1:%eYou should include ld/as option -G}                            \
        !           137: %{mG2:%eYou should include ld/as option -G}                            \
        !           138:  -G 8}}}                                                               \
        !           139: %{G32: -G 32}                                                          \
        !           140: %{bestGnum: -bestGnum} "
        !           141: #endif
        !           142: #endif
        !           143: 
        !           144: /* CC1 SPECS */
        !           145: 
        !           146: #define CC1_SPEC   "%{!O2:%{O:-O -fstrength-reduce -fomit-frame-pointer}}\
        !           147:                     %{O2:-O -fstrength-reduce -fomit-frame-pointer -mgpOPT}\
        !           148:                     %{g:%eThis port of GCC does not support -g flag}   \
        !           149:                     %{G32: -mG2 -mnG1 }                                        \
        !           150:                     %{G32:%{!O2:%eOption -G32 may require -O2}}"
        !           151: 
        !           152: /* CPP SPECS */
        !           153: 
        !           154: #ifdef DECSTATION
        !           155:                                /* default DECSTATION environment */
        !           156: #define CPP_SPEC "-DR3000 -DLANGUAGE_C -DMIPSEL -DSYSTYPE_BSD -Dultrix"
        !           157: #else /* not DECSTATION */
        !           158: #if defined(MIPS_SYSV) || defined(MIPS_BSD43)
        !           159:                                /* MIPS RISC-OS environments */
        !           160: 
        !           161: #ifdef MIPS_SYSV
        !           162: #define CPP_SPEC "-DR3000  -Dhost_mips -DMIPSEB                                \
        !           163:                    %{!ZBSD43:-DSYSTYPE_SYSV}%{ZBSD43:-DSYSTYPE_BSD43}  \
        !           164:                    -DLANGUAGE_C                                                \
        !           165:                    %{!ZBSD43:-I/sysv/usr/include}                      \
        !           166:                    %{ZBSD43:-I/bsd43/usr/include}"
        !           167: #else /* not MIPS_SYSV */
        !           168: #define CPP_SPEC "-DR3000  -Dhost_mips -DMIPSEB                                \
        !           169:                    %{!ZSYSV:-DSYSTYPE_BSD43}%{ZSYSV:-DSYSTYPE_SYSV}    \
        !           170:                    -DLANGUAGE_C                                                \
        !           171:                    %{!ZYSV:-I/bsd43/usr/include}%{ZBSD43:-I/sysv/usr/include}"
        !           172: #endif /* not MIPS_SYSV */
        !           173: 
        !           174: #else /* not MIPS_SYSV and not MIPS_BSD43 */
        !           175:                                /* default MIPS Bsd environment */
        !           176: #define CPP_SPEC "-DR3000  -Dhost_mips -DMIPSEB -DSYSTYPE_BSD -DLANGUAGE_C "
        !           177: 
        !           178: #endif /* not MIPS_SYSV and not MIPS_BSD43 */
        !           179: #endif /* not DECSTATION */
        !           180: 
        !           181: /* Print subsidiary information on the compiler version in use.  */
        !           182: 
        !           183: #ifdef DECSTATION
        !           184: #define TARGET_VERSION printf (" (AL-MIPS 1.11) <Decstation>\n");
        !           185:                                /* Depends on MIPS ASM. */
        !           186: #else
        !           187: #define TARGET_VERSION printf (" (AL-MIPS 1.11) <MIPS>\n");
        !           188:                                /* Depends on MIPS ASM. */
        !           189: #endif
        !           190: #define TARGET_VERSNUM "1 11"
        !           191: 
        !           192: /* Do not Generate DBX debugging information.  */
        !           193: 
        !           194: /* #define DBX_DEBUGGING_INFO */
        !           195: 
        !           196: /* Run-time compilation parameters selecting different hardware subsets.  */
        !           197: 
        !           198: extern int target_flags;
        !           199: 
        !           200: /* Macros used in the machine description to test the flags.  */
        !           201: 
        !           202: /* Nonzero if compiling code that Unix assembler can assemble.  */
        !           203: #define TARGET_UNIX_ASM (target_flags & 1)
        !           204:                                /* Debug Mode */
        !           205: #define TARGET_DEBUG_MODE (target_flags & 2)
        !           206: #define TARGET_DEBUGA_MODE (target_flags & 4)
        !           207: #define TARGET_DEBUGB_MODE (target_flags & 16)
        !           208: #define TARGET_DEBUGC_MODE (target_flags & 32)
        !           209: #define TARGET_DEBUGD_MODE (target_flags & 64)
        !           210:                                /* Register Naming in .s ($21 vs. $a0) */
        !           211: #define TARGET_NAME_REGS (target_flags & 8)
        !           212:                                /* Use addu / subbu or get FIXED_OVFL TRAPS */
        !           213: #define TARGET_NOFIXED_OVFL (target_flags & 128)
        !           214:                                /* Optimize for Sdata/Sbss */
        !           215: #define TARGET_GP_OPT (target_flags & 4096)
        !           216: #define TARGET_GVALUE ((target_flags >> 8 ) & 0xf)
        !           217: 
        !           218: 
        !           219: 
        !           220: /* Macro to define tables used to set the flags.
        !           221:    This is a list in braces of pairs in braces,
        !           222:    each pair being { "NAME", VALUE }
        !           223:    where VALUE is the bits to set or minus the bits to clear.
        !           224:    An empty string NAME is used to identify the default VALUE.  */
        !           225: 
        !           226: #define TARGET_SWITCHES                                                        \
        !           227:   { {"unix", 1},                                                       \
        !           228:     {"gnu", -1},                                                       \
        !           229:     {"debug", 2 },             /* RELOAD and CONSTRAINTS Related DEBUG */\
        !           230:     {"nodebug", -2 },                                                  \
        !           231:     {"debuga",   4 },          /* CALLING SEQUENCE RELATED DEBUG */    \
        !           232:     {"nodebuga", -4 },                                                 \
        !           233:     {"debugb",   16 },                 /* GLOBAL/LOCAL ALLOC  DEBUG */         \
        !           234:     {"nodebugb", -16 },                                                        \
        !           235:     {"debugc",   32 },                 /* SPILL/RELOAD REGISTER ALLOCATOR DEBUG */\
        !           236:     {"nodebugc", -32 },                                                        \
        !           237:     {"debugd",   64 },                 /* CSE DEBUG */                         \
        !           238:     {"nodebugd", -64 },                                                        \
        !           239:     {"rnames",   8 },          /* Output register names like $a0 */    \
        !           240:     {"nornames", -8 },         /* Output register numbers like $21 */  \
        !           241:     {"nofixed-ovfl",128},       /* use addu and subu                */ \
        !           242:     {"fixed-ovfl", -128},       /* use add and sub                */   \
        !           243:                                /* Following used to support the data/sdata */\
        !           244:                                /* feature */                           \
        !           245:     {"G0",256},                                                                \
        !           246:     {"nG0",-256},                                                      \
        !           247:     {"G1",512},                                                                \
        !           248:     {"nG1",-512},                                                      \
        !           249:     {"G2",1024},                                                       \
        !           250:     {"nG2",-1024},                                                     \
        !           251:     {"gpOPT", 4096},           /* DO the full GP optimization data/sdata.. */\
        !           252:     {"ngpOPT", -4096},\
        !           253:     { "", TARGET_DEFAULT}}
        !           254: 
        !           255: /* Default target_flags if no switches specified.  */
        !           256: 
        !           257: #define TARGET_DEFAULT 897
        !           258: 
        !           259: /* Default GVALUE  (data item size threshold for selection of Sdata/data)
        !           260:    is computed : GVALUE ==  ( ((i=G0+2*G1+4*G2) < 6)
        !           261:                                        ? 1<<i
        !           262:                                        : 1<< (i+6))
        !           263: */
        !           264: #define MIPS_GVALUE_DEFAULT 8
        !           265: 
        !           266: #ifdef DECSTATION
        !           267: #define DOLLARS_IN_IDENTIFIERS 1
        !           268: #endif
        !           269: /* Target machine storage layout */
        !           270: 
        !           271: /* Define this if most significant bit is lowest numbered
        !           272:    in instructions that operate on numbered bit-fields.
        !           273: */
        !           274: /* #define BITS_BIG_ENDIAN */
        !           275: 
        !           276: /* Define this if most significant byte of a word is the lowest numbered.
        !           277: */
        !           278: #ifndef DECSTATION
        !           279: #define BYTES_BIG_ENDIAN
        !           280: #endif
        !           281: /* Define this if most significant word of a multiword number is numbered.
        !           282: */
        !           283: #ifndef DECSTATION
        !           284: #define WORDS_BIG_ENDIAN
        !           285: #endif
        !           286: /* Number of bits in an addressible storage unit */
        !           287: #define BITS_PER_UNIT 8
        !           288: 
        !           289: /* Width in bits of a "word", which is the contents of a machine register.
        !           290:    Note that this is not necessarily the width of data type `int';
        !           291:    if using 16-bit ints on a 68000, this would still be 32.
        !           292:    But on a machine with 16-bit registers, this would be 16.  */
        !           293: #define BITS_PER_WORD 32
        !           294: 
        !           295: /* Width of a word, in units (bytes).  */
        !           296: #define UNITS_PER_WORD 4
        !           297: 
        !           298: /* Width in bits of a pointer.
        !           299:    See also the macro `Pmode' defined below.  */
        !           300: #define POINTER_SIZE 32
        !           301: 
        !           302: /* Allocation boundary (in *bits*) for storing pointers in memory.  */
        !           303: #define POINTER_BOUNDARY 32
        !           304: 
        !           305: /* Allocation boundary (in *bits*) for storing arguments in argument list.  */
        !           306: #define PARM_BOUNDARY 32
        !           307: 
        !           308: /* Give parms extra alignment, up to this much, if their types want it.  */
        !           309: #define MAX_PARM_BOUNDARY 64
        !           310: 
        !           311: /* Allocation boundary (in *bits*) for the code of a function.  */
        !           312: #define FUNCTION_BOUNDARY 32
        !           313: 
        !           314: /* Alignment of field after `int : 0' in a structure.  */
        !           315: #define EMPTY_FIELD_BOUNDARY 32
        !           316: 
        !           317: /* Every structure's size must be a multiple of this.  */
        !           318: #define STRUCTURE_SIZE_BOUNDARY 16
        !           319: 
        !           320: /* There is no point aligning anything to a rounder boundary than this.  */
        !           321: #define BIGGEST_ALIGNMENT 64
        !           322: 
        !           323: /* Define this if move instructions will actually fail to work
        !           324:    when given unaligned data.  */
        !           325: #define STRICT_ALIGNMENT
        !           326: 
        !           327: /* Standard register usage.  */
        !           328: 
        !           329: /* Number of actual hardware registers.
        !           330:    The hardware registers are assigned numbers for the compiler
        !           331:    from 0 to just below FIRST_PSEUDO_REGISTER.
        !           332:    All registers that the compiler knows about must be given numbers,
        !           333:    even those that are not normally considered general registers.  */
        !           334: #define FIRST_PSEUDO_REGISTER 64
        !           335: 
        !           336: /* 1 for registers that have pervasive standard uses
        !           337:    and are not available for the register allocator.
        !           338: 
        !           339:    On the MIPS, see conventions, page D-2
        !           340: 
        !           341:    I have chosen not to  take Multiply/Divide HI,LO or PC into
        !           342:    account.
        !           343: */
        !           344: #define FIXED_REGISTERS {1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,\
        !           345:                         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 1,\
        !           346:                         1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1,\
        !           347:                         0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 \
        !           348: }
        !           349: 
        !           350: 
        !           351: /* 1 for registers not available across function calls.
        !           352:    These must include the FIXED_REGISTERS and also any
        !           353:    registers that can be used without being saved.
        !           354:    The latter must include the registers where values are returned
        !           355:    and the register where structure-value addresses are passed.
        !           356:    Aside from that, you can include as many other registers as you like.  */
        !           357: #define CALL_USED_REGISTERS {1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,\
        !           358:                             0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 1,\
        !           359:                             1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,\
        !           360:                             1, 1, 1, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0\
        !           361: }
        !           362: 
        !           363: 
        !           364: /* Return number of consecutive hard regs needed starting at reg REGNO
        !           365:    to hold something of mode MODE.
        !           366:    This is ordinarily the length in words of a value of mode MODE
        !           367:    but can be less for certain modes in special long registers.
        !           368: 
        !           369:    On the MIPS, all general registers are one word long. I have chosen to
        !           370:    use Floating point register pairs.
        !           371: */
        !           372: #define HARD_REGNO_NREGS(REGNO, MODE)                                  \
        !           373:  (((MODE == SFmode) ||(MODE == DFmode)) ? 2 :                          \
        !           374:   ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           375: 
        !           376: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
        !           377:    On the MIPS, all general registers can hold all  modes, except
        !           378:    FLOATING POINT.  */
        !           379: 
        !           380: #define HARD_REGNO_MODE_OK(REGNO, MODE)                                        \
        !           381:    ((REGNO) < 32 ? (int) (((MODE) != SFmode) && ((MODE) != DFmode))    \
        !           382:     : (int) (((MODE) == SFmode || (MODE) == DFmode)                    \
        !           383:             && ((REGNO) & 1) == 0))
        !           384: 
        !           385: 
        !           386: /* Value is 1 if it is a good idea to tie two pseudo registers
        !           387:    when one has mode MODE1 and one has mode MODE2.
        !           388:    If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
        !           389:    for any hard reg, then this must be 0 for correct output.  */
        !           390: #define MODES_TIEABLE_P(MODE1, MODE2)                                  \
        !           391:   (   ((MODE1) == SFmode || (MODE1) == DFmode)                         \
        !           392:    == ((MODE2) == SFmode || (MODE2) == DFmode))
        !           393: 
        !           394: /* MIPS pc is apparently not overloaded on a register.  */
        !           395: /* #define PC_REGNUM 15                                 */
        !           396: 
        !           397: /* Register to use for pushing function arguments.  */
        !           398: #define STACK_POINTER_REGNUM 29
        !           399: 
        !           400: /* Base register for access to local variables of the function.  */
        !           401: #define FRAME_POINTER_REGNUM 30
        !           402: 
        !           403: /* Value should be nonzero if functions must have frame pointers.
        !           404:    Zero means the frame pointer need not be set up (and parms
        !           405:    may be accessed via the stack pointer) in functions that seem suitable.
        !           406:    This is computed in `reload', in reload1.c.  */
        !           407: 
        !           408: /* This is now 1 because we don't know until too late
        !           409:    whether the function is a varargs function.
        !           410:    Such functions currently require extra stack slots on the mips.  */
        !           411: #define FRAME_POINTER_REQUIRED 1
        !           412: 
        !           413: /* Base register for access to arguments of the function.  */
        !           414: #define ARG_POINTER_REGNUM FRAME_POINTER_REGNUM
        !           415: 
        !           416: /* Register in which static-chain is passed to a function.  */
        !           417: #define STATIC_CHAIN_REGNUM 2
        !           418: 
        !           419: /* Register in which address to store a structure value
        !           420:    is passed to a function.  */
        !           421: #define STRUCT_VALUE_REGNUM 3
        !           422: 
        !           423: /* Define the classes of registers for register constraints in the
        !           424:    machine description.  Also define ranges of constants.
        !           425: 
        !           426:    One of the classes must always be named ALL_REGS and include all hard regs.
        !           427:    If there is more than one class, another class must be named NO_REGS
        !           428:    and contain no registers.
        !           429: 
        !           430:    The name GENERAL_REGS must be the name of a class (or an alias for
        !           431:    another name such as ALL_REGS).  This is the class of registers
        !           432:    that is allowed by "g" or "r" in a register constraint.
        !           433:    Also, registers outside this class are allocated only when
        !           434:    instructions express preferences for them.
        !           435: 
        !           436:    The classes must be numbered in nondecreasing order; that is,
        !           437:    a larger-numbered class must never be contained completely
        !           438:    in a smaller-numbered class.
        !           439: 
        !           440:    For any two classes, it is very desirable that there be another
        !           441:    class that represents their union.  */
        !           442: 
        !           443: /* The MIPS has general and floating point registers,
        !           444: */
        !           445: 
        !           446: 
        !           447: enum reg_class  { NO_REGS, GR_REGS, FP_REGS, ALL_REGS, LIM_REG_CLASSES } ;
        !           448: 
        !           449: #define N_REG_CLASSES (int) LIM_REG_CLASSES
        !           450: 
        !           451: #define GENERAL_REGS GR_REGS
        !           452: 
        !           453: /* Give names of register classes as strings for dump file.   */
        !           454: 
        !           455: #define REG_CLASS_NAMES                                                        \
        !           456:  {"NO_REGS", "GR_REGS", "FP_REGS", "ALL_REGS" }
        !           457: 
        !           458: /* Define which registers fit in which classes.
        !           459:    This is an initializer for a vector of HARD_REG_SET
        !           460:    of length N_REG_CLASSES.  */
        !           461: 
        !           462: #define REG_CLASS_CONTENTS {{0x00000000, 0x00000000},                  \
        !           463:                             {0xffffffff, 0x00000000},                  \
        !           464:                             {0x00000000, 0xffffffff},                  \
        !           465:                            {0xffffffff, 0xffffffff}}
        !           466: 
        !           467: 
        !           468: /* The same information, inverted:
        !           469:    Return the class number of the smallest class containing
        !           470:    reg number REGNO.  This could be a conditional expression
        !           471:    or could index an array.  */
        !           472: 
        !           473: #define REGNO_REG_CLASS(REGNO)                                         \
        !           474:    ( (REGNO >= 32) ? FP_REGS : GR_REGS)
        !           475: 
        !           476: /* Define a table that lets us find quickly all the reg classes
        !           477:    containing a given one.  This is the initializer for an
        !           478:    N_REG_CLASSES x N_REG_CLASSES array of reg class codes.
        !           479:    Row N is a sequence containing all the class codes for
        !           480:    classes that contain all the regs in class N.  Each row
        !           481:    contains no duplicates, and is terminated by LIM_REG_CLASSES.  */
        !           482: 
        !           483: /* We give just a dummy for the first element, which is for NO_REGS.  */
        !           484: /* #define REG_CLASS_SUPERCLASSES  {{LIM_REG_CLASSES},                 \
        !           485:   {GR_REGS,ALL_REGS,LIM_REG_CLASSES},                                  \
        !           486:   {FP_REGS,ALL_REGS,LIM_REG_CLASSES},                                  \
        !           487:   {ALL_REGS,LIM_REG_CLASSES}                                           \
        !           488: }
        !           489: */
        !           490: /* We give just a dummy for the first element, which is for NO_REGS.  */
        !           491: #define REG_CLASS_SUPERCLASSES  {{LIM_REG_CLASSES},                    \
        !           492:   {ALL_REGS,LIM_REG_CLASSES},                                          \
        !           493:   {ALL_REGS,LIM_REG_CLASSES},                                          \
        !           494:   {LIM_REG_CLASSES}                                                    \
        !           495: }
        !           496: 
        !           497: /* The inverse relationship:
        !           498:    for each class, a list of all reg classes contained in it.  */
        !           499: #define REG_CLASS_SUBCLASSES                                           \
        !           500: {{LIM_REG_CLASSES},                                                    \
        !           501:   {GR_REGS,LIM_REG_CLASSES},                                           \
        !           502:   {FP_REGS,LIM_REG_CLASSES},\
        !           503:   {GR_REGS, FP_REGS, ALL_REGS, LIM_REG_CLASSES}\
        !           504: }
        !           505: 
        !           506: /* Define a table that lets us find quickly the class
        !           507:    for the subunion of any two classes.
        !           508: 
        !           509:    We say "subunion" because the result need not be exactly
        !           510:    the union; it may instead be a subclass of the union
        !           511:    (though the closer to the union, the better).
        !           512:    But if it contains anything beyond union of the two classes,
        !           513:    you will lose!
        !           514: 
        !           515:    This is an initializer for an N_REG_CLASSES x N_REG_CLASSES
        !           516:    array of reg class codes.  The subunion of classes C1 and C2
        !           517:    is just element [C1, C2].  */
        !           518: 
        !           519: #define REG_CLASS_SUBUNION  {{NO_REGS,  GR_REGS,   FP_REGS,  ALL_REGS},        \
        !           520:  {GR_REGS,  GR_REGS,   ALL_REGS, ALL_REGS},                            \
        !           521:  {FP_REGS,  ALL_REGS,  FP_REGS,  ALL_REGS},                            \
        !           522:  {ALL_REGS, ALL_REGS,  ALL_REGS, ALL_REGS}}
        !           523: 
        !           524: /* The class value for index registers, and the one for base regs.  */
        !           525: 
        !           526: #define INDEX_REG_CLASS GR_REGS
        !           527: #define BASE_REG_CLASS  GR_REGS
        !           528: 
        !           529: 
        !           530:                                /* REGISTER AND CONSTANT CLASSES
        !           531:                                 */
        !           532: 
        !           533: /* Get reg_class from a letter such as appears in the machine
        !           534: description.  */
        !           535:                                /* DEFINED REGISTER CLASSES:
        !           536:                                **
        !           537:                                ** 'f'     : Floating point registers
        !           538:                                ** 'y'     : General register when used to
        !           539:                                **           transfer chunks of Floating point
        !           540:                                **           with mfc1 mtc1 insn
        !           541:                                 */
        !           542: 
        !           543: #define REG_CLASS_FROM_LETTER(C)                                       \
        !           544:    ((C) == 'f' ? FP_REGS:                                              \
        !           545:      (C) == 'y' ? GR_REGS:NO_REGS)
        !           546: 
        !           547: /* The letters I, J, K, L and M in a register constraint string
        !           548:    can be used to stand for particular ranges of immediate operands.
        !           549:    This macro defines what the ranges are.
        !           550:    C is the letter, and VALUE is a constant value.
        !           551:    Return 1 if VALUE is in the range specified by C.  */
        !           552: 
        !           553: /*   For MIPS, `I' is used for the range of constants an insn
        !           554:                    can actually contain (16 bits signed integers).
        !           555:                `J' is used for the range which is just zero (since that is
        !           556:                   available as $R0).
        !           557: */
        !           558: 
        !           559: #define SMALL_INT(X) ((unsigned) (INTVAL (X) + 0x10000) < 0x20000)
        !           560: 
        !           561: #define CONST_OK_FOR_LETTER_P(VALUE, C)                                        \
        !           562:   ((C) == 'I' ? (unsigned) ((VALUE) + 0x10000) < 0x20000               \
        !           563:    : (C) == 'J' ? (VALUE) == 0                                         \
        !           564:    : 0)
        !           565: 
        !           566: /* Similar, but for floating constants, and defining letters G and H.
        !           567:    Here VALUE is the CONST_DOUBLE rtx itself.  */
        !           568: 
        !           569:                                /* DEFINED FLOATING CONSTANT CLASSES:
        !           570:                                **
        !           571:                                ** 'G'     : Floating point 0
        !           572:                                 */
        !           573: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C)                         \
        !           574:   ((C) == 'G' && XINT (VALUE, 0) == 0 && XINT (VALUE, 1) == 0)
        !           575: 
        !           576: /* Given an rtx X being reloaded into a reg required to be
        !           577:    in class CLASS, return the class of reg to actually use.
        !           578:    In general this is just CLASS; but on some machines
        !           579:    in some cases it is preferable to use a more restrictive class.  */
        !           580: 
        !           581: #define PREFERRED_RELOAD_CLASS(X,CLASS)                                        \
        !           582:     (((GET_MODE(X) == SFmode) || (GET_MODE(X) == DFmode))? FP_REGS  :  \
        !           583:      ((GET_MODE(X) == VOIDmode) ? GR_REGS :(CLASS)))
        !           584: 
        !           585: /* Same but Mode has been extracted already
        !           586: */
        !           587: 
        !           588: #define PREFERRED_RELOAD_CLASS_FM(X,CLASS)                             \
        !           589:     ((((X) == SFmode) || ((X) == DFmode))? FP_REGS  :                  \
        !           590:      (((X) == VOIDmode) ? GR_REGS :(CLASS)))
        !           591: 
        !           592: /* Return the maximum number of consecutive registers
        !           593:    needed to represent mode MODE in a register of class CLASS.  */
        !           594: 
        !           595: #define CLASS_MAX_NREGS(CLASS, MODE)                                   \
        !           596:  ((((MODE) == DFmode) || ((MODE) == SFmode)) ? 2                       \
        !           597:   : ((MODE) == VOIDmode)? ((CLASS) == FP_REGS ? 2 :1)                  \
        !           598:   : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           599: 
        !           600: 
        !           601: /* Stack layout; function entry, exit and calling.  */
        !           602: 
        !           603: /* Define this if pushing a word on the stack
        !           604:    makes the stack pointer a smaller address.  */
        !           605: #define STACK_GROWS_DOWNWARD
        !           606: 
        !           607: /* Define this if the nominal address of the stack frame
        !           608:    is at the high-address end of the local variables;
        !           609:    that is, each additional local variable allocated
        !           610:    goes at a more negative offset in the frame.  */
        !           611: #define FRAME_GROWS_DOWNWARD
        !           612: 
        !           613: /* Offset within stack frame to start allocating local variables at.
        !           614:    If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
        !           615:    first local allocated.  Otherwise, it is the offset to the BEGINNING
        !           616:    of the first local allocated.  */
        !           617: #define STARTING_FRAME_OFFSET -8
        !           618: 
        !           619: /* If we generate an insn to push BYTES bytes,
        !           620:    this says how many the stack pointer really advances by.
        !           621:    On the vax, sp@- in a byte insn really pushes a word.  */
        !           622: 
        !           623: /* #define PUSH_ROUNDING(BYTES) 0 */
        !           624: 
        !           625: 
        !           626: /* Offset of first parameter from the argument pointer register value.  */
        !           627: #define FIRST_PARM_OFFSET(FNDECL) 0
        !           628: 
        !           629: /* Offset from top-of-stack address to location to store the
        !           630:    function parameter if it can't go in a register.
        !           631:    Addresses for following parameters are computed relative to this one.  */
        !           632: #define FIRST_PARM_CALLER_OFFSET(FNDECL) 0
        !           633: 
        !           634: /* When a parameter is passed in a register, stack space is still
        !           635:    allocated for it.  */
        !           636: /* For the MIPS, stack space must be allocated, cf Asm Lang Prog Guide
        !           637:    page 7-8
        !           638: 
        !           639:    BEWARE that some space is also allocated for non existing arguments
        !           640:    in register. In case an argument list is of form
        !           641:    GF used registers are a0 (a2,a3), but we should push over a1... not
        !           642:     used..
        !           643: */
        !           644: #define REG_PARM_STACK_SPACE
        !           645:    /* Align stack frames on 64 bits (Double Word )
        !           646:    */
        !           647: 
        !           648: #define STACK_BOUNDARY 64
        !           649: 
        !           650: /* For the MIPS, there seems to be a minimum to the amount of stack space
        !           651:    used... for varargs using functions.
        !           652:    evidence comes from the dis-assembled version of printf:
        !           653: 
        !           654:  cc (cc)
        !           655:         Mips Computer Systems 1.31
        !           656:  /usr/lib/cpp1.31
        !           657: 
        !           658: 
        !           659: printf:
        !           660:   [printf.c:  14] 0x400510:     27bdffe8        addiu   sp,sp,-24
        !           661:   [printf.c:  14] 0x400514:     afbf0014        sw      ra,20(sp)
        !           662:   [printf.c:  14] 0x400518:     afa5001c        sw      a1,28(sp)
        !           663:   [printf.c:  14] 0x40051c:     afa60020        sw      a2,32(sp)
        !           664:   [printf.c:  14] 0x400520:     afa70024        sw      a3,36(sp)
        !           665:   [printf.c:  18] 0x400524:     27a5001c        addiu   a1,sp,28
        !           666: 
        !           667:   it is however OK for functions that do not take arguments to have 0 size
        !           668:   frames.
        !           669: 
        !           670: */
        !           671: 
        !           672: #define STACK_ARGS_ADJUST(SIZE)                                                \
        !           673: {                                                                      \
        !           674:   SIZE.constant += 4;                                                  \
        !           675:   if (SIZE.var)                                                                \
        !           676:     {                                                                  \
        !           677:       rtx size1 = ARGS_SIZE_RTX (SIZE);                                        \
        !           678:       rtx rounded = gen_reg_rtx (SImode);                              \
        !           679:       rtx label = gen_label_rtx ();                                    \
        !           680:       emit_move_insn (rounded, size1);                                 \
        !           681:       /* Needed: insns to jump to LABEL if ROUNDED is < 16.  */                \
        !           682:       abort ();                                                                \
        !           683:       emit_move_insn (rounded, gen_rtx (CONST_INT, VOIDmode, 16));     \
        !           684:       emit_label (label);                                              \
        !           685:       SIZE.constant = 0;                                               \
        !           686:       SIZE.var = (tree) rounded;                                       \
        !           687:     }                                                                  \
        !           688:   else if (SIZE.constant < 16)                                         \
        !           689:     SIZE.constant = 16;                                                        \
        !           690: }
        !           691: 
        !           692: /* Value is 1 if returning from a function call automatically
        !           693:    pops the arguments described by the number-of-args field in the call.
        !           694:    FUNTYPE is the data type of the function (as a tree),
        !           695:    or for a library call it is an identifier node for the subroutine name.  */
        !           696: 
        !           697: #define RETURN_POPS_ARGS(FUNTYPE) 0
        !           698: 
        !           699: 
        !           700: /* Define how to find the value returned by a function.
        !           701:    VALTYPE is the data type of the value (as a tree).
        !           702:    If the precise function being called is known, FUNC is its FUNCTION_DECL;
        !           703:    otherwise, FUNC is 0.  */
        !           704: 
        !           705: #define FUNCTION_VALUE(VALTYPE, FUNC)                                  \
        !           706:   gen_rtx (REG, TYPE_MODE (VALTYPE),                                   \
        !           707:   (TYPE_MODE (VALTYPE) == SFmode) ||(TYPE_MODE (VALTYPE) == DFmode)?32 : 2)
        !           708: 
        !           709: /* Define how to find the value returned by a library function
        !           710:    assuming the value has mode MODE.  */
        !           711: 
        !           712: 
        !           713: #define LIBCALL_VALUE(MODE)  gen_rtx (REG, MODE,                       \
        !           714:    ((MODE) == DFmode || ( MODE) == SFmode) ? 32 : 2)
        !           715: 
        !           716: /* 1 if N is a possible register number for a function value.
        !           717:    On the MIPS, R2 R3 and F0 F2 are the only register thus used.  */
        !           718: /* Currently, R2 and F0 are only implemented  here ( C has no complex type)
        !           719: */
        !           720: 
        !           721: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 2 || (N) == 32)
        !           722: 
        !           723: /* 1 if N is a possible register number for function argument passing.
        !           724:     */
        !           725: 
        !           726: #define FUNCTION_ARG_REGNO_P(N) (((N) < 8 && (N) > 3)                  \
        !           727:                                 ||((N) < 48 && (N) > 44 && (0 == (N) % 2)))
        !           728: 
        !           729: /* Define a data type for recording info about an argument list
        !           730:    during the scan of that argument list.  This data type should
        !           731:    hold all necessary information about the function itself
        !           732:    and about the args processed so far, enough to enable macros
        !           733:    such as FUNCTION_ARG to determine where the next arg should go.
        !           734: */
        !           735:                                /* On MIPS the following automaton decides */
        !           736:                                /* where to put things. */
        !           737:                                /* If you dont believe it, look at Gerry Kane*/
        !           738:                                /* 's book page D-22 */
        !           739: 
        !           740: #define CUMULATIVE_ARGS struct    { enum arg_state arg_rec_state;int restype,arg_num;}
        !           741: 
        !           742: enum arg_state     { ARG_STA_INIT =0,
        !           743:                     ARG_STA_F    =1, /* $f12 */
        !           744:                     ARG_STA_FF   =2, /* $f12 $f14 */
        !           745:                     ARG_STA_FG   =3, /* $f12 $6   */
        !           746:                     ARG_STA_FGG  =4, /* $f12 $6 $7 */
        !           747:                     ARG_STA_FGF  =5, /* $f12 $6 STACK */
        !           748:                     ARG_STA_G    =6, /* $4 */
        !           749:                     ARG_STA_GF   =7, /* $4  ($6,$7) */
        !           750:                     ARG_STA_GG   =8, /* $4 $5 */
        !           751:                     ARG_STA_GGF  =9, /* $4 $5 ($6,$7) */
        !           752:                     ARG_STA_GGG  =10,/* $4 $5 $6 */
        !           753:                     ARG_STA_GGGF =11,/* $4 $5 $6 STACK */
        !           754:                     ARG_STA_GGGG =12 /* $4 $5 $6 $7 */
        !           755:                     };
        !           756: #define ARG_STA_AUTOMA                                                 \
        !           757: {                                                                      \
        !           758:   {ARG_STA_F,ARG_STA_G,44,4        },   /* ARG_STA_INIT */             \
        !           759:   {ARG_STA_FF,ARG_STA_FG,46,6      },   /* ARG_STA_F    */             \
        !           760:   {ARG_STA_FF,ARG_STA_FF,-1,-1     },   /* ARG_STA_FF   */             \
        !           761:   {ARG_STA_FGF,ARG_STA_FGG,-1,7    },   /* ARG_STA_FG   */             \
        !           762:   {ARG_STA_FGG,ARG_STA_FGG,-1,-1   },   /* ARG_STA_FGG  */             \
        !           763:   {ARG_STA_FGF,ARG_STA_FGF,-1,-1   },   /* ARG_STA_FGF  */             \
        !           764:   {ARG_STA_GF,ARG_STA_GG,-2,5      },   /* ARG_STA_G    */             \
        !           765:   {ARG_STA_GF,ARG_STA_GF,-1,-1     },   /* ARG_STA_GF   */             \
        !           766:   {ARG_STA_GGF,ARG_STA_GGG,-2,6    },   /* ARG_STA_GG   */             \
        !           767:   {ARG_STA_GGF,ARG_STA_GGF,-1,-1   },   /* ARG_STA_GGF  */             \
        !           768:   {ARG_STA_GGGF,ARG_STA_GGGG,-1,7  },   /* ARG_STA_GGG  */             \
        !           769:   {ARG_STA_GGGF,ARG_STA_GGGF,-1,-1 },   /* ARG_STA_GGGF */             \
        !           770:   {ARG_STA_GGGG,ARG_STA_GGGG,-1,-1 }    /* ARG_STA_GGGG */             \
        !           771: }
        !           772: 
        !           773: /* Initialize a variable CUM of type CUMULATIVE_ARGS
        !           774:    for a call to a function whose data type is FNTYPE.
        !           775:    For a library call, FNTYPE is 0.
        !           776: 
        !           777: */
        !           778: 
        !           779: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE) ((CUM.arg_rec_state) = ARG_STA_INIT,\
        !           780:    (CUM.arg_num) = 0, (CUM.restype = (int)VOIDmode))
        !           781: 
        !           782: /* Update the data in CUM to advance over an argument
        !           783:    of mode MODE and data type TYPE.
        !           784:    (TYPE is null for libcalls where that information may not be available.)  */
        !           785: 
        !           786: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)                   \
        !           787:                            ( function_arg_advance(&CUM,MODE,TYPE));
        !           788: 
        !           789: extern  enum arg_state function_arg_advance();
        !           790: 
        !           791: /* Determine where to put an argument to a function.
        !           792:    Value is zero to push the argument on the stack,
        !           793:    or a hard register in which to store the argument.
        !           794: 
        !           795:    MODE is the argument's machine mode.
        !           796:    TYPE is the data type of the argument (as a tree).
        !           797:     This is null for libcalls where that information may
        !           798:     not be available.
        !           799:    CUM is a variable of type CUMULATIVE_ARGS which gives info about
        !           800:     the preceding args and about the function being called.
        !           801:    NAMED is nonzero if this argument is a named parameter
        !           802:     (otherwise it is an extra parameter matching an ellipsis).  */
        !           803: 
        !           804: 
        !           805: 
        !           806: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED)                           \
        !           807:      ( (rtx) function_arg(&CUM,MODE,TYPE,NAMED))
        !           808: 
        !           809: /* For an arg passed partly in registers and partly in memory,
        !           810:    this is the number of registers used.
        !           811:    For args passed entirely in registers or entirely in memory, zero.
        !           812: */
        !           813: 
        !           814: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) (0)
        !           815: 
        !           816: 
        !           817: /* This macro generates the assembly code for function entry.
        !           818:    FILE is a stdio stream to output the code to.
        !           819:    SIZE is an int: how many units of temporary storage to allocate.
        !           820:    Refer to the array `regs_ever_live' to determine which registers
        !           821:    to save; `regs_ever_live[I]' is nonzero if register number I
        !           822:    is ever used in the function.  This macro is responsible for
        !           823:    knowing which registers should not be saved even if used.  */
        !           824: 
        !           825: 
        !           826: /* ALIGN FRAMES on double word boundaries */
        !           827: 
        !           828: #define AL_ADJUST_ALIGN(LOC) (((LOC)+7) & 0xfffffff8)
        !           829: 
        !           830: 
        !           831: /* The problem of Varargs  comes from the register passing conventions
        !           832:    for Floating Point data. There is a conflict when we send registers
        !           833:    back  to stack between registers $4,$5 $6,$7 and $f12, $f14.
        !           834: 
        !           835:    The current implementation:
        !           836:       a/ tries to figure out if the current routines uses varargs.(It becomes
        !           837:          ``suspect''.) This is currently done by looking for a special
        !           838:         static character string constant.
        !           839: 
        !           840:       b/when a function is suspected of using varags,  a larger reg
        !           841:         save_area is allocated which will hold regs f12 and f14. The varargs
        !           842:        macros then have to find where is the argument they are looking for.
        !           843:        This is made easier by a modification in stack frame layout for
        !           844:         these functions:the  stack frame-size is accessible on stack at
        !           845:         location 4($30).
        !           846: 
        !           847:         Total overhead in PROLOGUE: 2 inns to put stacksize on stack
        !           848:                                     2 sw.d to save floating registers.
        !           849:         (Only when Varargs suspected)
        !           850: 
        !           851:         The only problem with ``thinking'', is that when functions are
        !           852:         thought using varargs and dont do it, they get the above entry
        !           853:         overhead.However the current method is quite precise, and is *safe*.
        !           854: 
        !           855: 
        !           856:    See va-mips.h for more information on varargs
        !           857: 
        !           858: */
        !           859: extern int varargs_suspect;
        !           860: extern int  this_varargs_suspect ;
        !           861: 
        !           862: #define VARARGS_SUSPECT(COND) varargs_suspect |= (COND)
        !           863: #define VARARGS_NOTSUSPECT    varargs_suspect = 0
        !           864: #define VARARGS_SUSPECTED    (varargs_suspect)
        !           865: 
        !           866: #define THIS_VARARGS_SUSPECT(COND) this_varargs_suspect |= (COND)
        !           867: #define THIS_VARARGS_NOTSUSPECT    this_varargs_suspect = 0
        !           868: #define THIS_VARARGS_SUSPECTED    (this_varargs_suspect)
        !           869: 
        !           870: 
        !           871: #define FUNCTION_PROLOGUE(FILE, SIZE)                                  \
        !           872: { register int regno;                                                  \
        !           873:   register int mask = 0, fmask=0;                                      \
        !           874:   static char dont_save_regs[] = CALL_USED_REGISTERS;                  \
        !           875:   register int push_loc = 0,tsize = SIZE+8;                            \
        !           876:   char *fp_str;                                                                \
        !           877:   extern char *reg_numchar[];                                          \
        !           878:   extern int  current_function_total_framesize;                                \
        !           879:   this_varargs_suspect = VARARGS_SUSPECTED  ;                          \
        !           880:   fp_str = TARGET_NAME_REGS ? reg_names[STACK_POINTER_REGNUM]          \
        !           881:     : reg_numchar[STACK_POINTER_REGNUM];                               \
        !           882:   for (regno = 0; regno < 32; regno++)                                 \
        !           883:     if (  MUST_SAVE_REG_LOGUES                                         \
        !           884:        || (regs_ever_live[regno] && !dont_save_regs[regno]))           \
        !           885:       {tsize += 4; mask |= 1 << regno;}                                        \
        !           886:   for (regno = 32; regno < FIRST_PSEUDO_REGISTER; regno += 2)          \
        !           887:     if (regs_ever_live[regno] && !dont_save_regs[regno])               \
        !           888:       {tsize += 8; fmask |= 1 << (regno-32);}                          \
        !           889:   if (THIS_VARARGS_SUSPECTED) tsize += 16;                             \
        !           890:   fprintf (FILE," #PROLOGUE\n");                                       \
        !           891:   regno = STACK_POINTER_REGNUM;                                                \
        !           892:   tsize = AL_ADJUST_ALIGN (tsize);                                     \
        !           893:                                                                        \
        !           894:   if (!frame_pointer_needed)                                           \
        !           895:     fprintf (FILE,"#define __0__gcc  %d\n",                            \
        !           896:             (!( regs_ever_live[29] || regs_ever_live[30]               \
        !           897:                || fmask || mask                                        \
        !           898:                || (SIZE > 0)))                                         \
        !           899:             ? 0:tsize);                                                \
        !           900:                                                                        \
        !           901:   push_loc = 0; current_function_total_framesize = tsize;              \
        !           902:   fprintf (FILE, " #\t.mask\t0x%x\n", mask);                           \
        !           903:   if (frame_pointer_needed || regs_ever_live[29] || regs_ever_live[30] \
        !           904:       || fmask || mask                                                 \
        !           905:       || (SIZE > 0))                                                   \
        !           906:     fprintf (FILE,"\tsubu\t%s,%d\t#temp=%5d,saveregs=%5d, sfo=%5d\n",  \
        !           907:             TARGET_NAME_REGS ? reg_names[29]                           \
        !           908:             :reg_numchar[29],tsize,SIZE,tsize-SIZE,                    \
        !           909:             STARTING_FRAME_OFFSET);                                    \
        !           910:   else fprintf (FILE," #NO STACK PUSH:\tSP %sused, FP %sused, FP %sneeded\n",\
        !           911:                regs_ever_live[29]? "":"un",                            \
        !           912:                regs_ever_live[30]? "":"un",                            \
        !           913:               frame_pointer_needed ?"" : "not ");                      \
        !           914:   for  (regno = 31; regno >= 30; regno--)                              \
        !           915:     {                                                                  \
        !           916:       if (MUST_SAVE_REG_LOGUES                                         \
        !           917:          || (regs_ever_live[regno] && !dont_save_regs[regno]))         \
        !           918:        {                                                               \
        !           919:          fprintf (FILE, "\tsw\t%s,%d(%s)\n",                           \
        !           920:                   TARGET_NAME_REGS ? reg_names[regno] : reg_numchar[regno], \
        !           921:                   push_loc, fp_str);                                   \
        !           922:          push_loc += 4;                                                \
        !           923:        }                                                               \
        !           924:     }                                                                  \
        !           925:   if (THIS_VARARGS_SUSPECTED)                                          \
        !           926:     { int fregno;                                                      \
        !           927:       fprintf (FILE, "\taddi\t%s,$0,%d\t#Varargs suspicion\n",         \
        !           928:               TARGET_NAME_REGS ? reg_names[9] : reg_numchar[9],        \
        !           929:               tsize);                                                  \
        !           930:       fprintf (FILE, "\tsw\t%s,%d(%s)\t#Varargs suspicion\n",          \
        !           931:               TARGET_NAME_REGS ? reg_names[9] : reg_numchar[9],        \
        !           932:               tsize - 4,                                               \
        !           933:               TARGET_NAME_REGS ? reg_names[29] : reg_numchar[29]);     \
        !           934:       for (fregno = 44; fregno< 48; fregno += 2)                       \
        !           935:        {                                                               \
        !           936:          fprintf (FILE, "\ts.d\t%s,%d(%s)\t#Varargs Suspicion\n",      \
        !           937:                   ((TARGET_NAME_REGS)                                  \
        !           938:                    ? reg_names[fregno] : reg_numchar[fregno]),         \
        !           939:                   push_loc, fp_str);                                   \
        !           940:          push_loc += 8;                                                \
        !           941:        }                                                               \
        !           942:     }                                                                  \
        !           943:   for (regno = 29; regno >= 0; regno--)                                        \
        !           944:     {                                                                  \
        !           945:       if (MUST_SAVE_REG_LOGUES                                         \
        !           946:          || (regs_ever_live[regno] && !dont_save_regs[regno]))         \
        !           947:        {                                                               \
        !           948:          fprintf (FILE, "\tsw\t%s,%d(%s)\n",                           \
        !           949:                   TARGET_NAME_REGS ? reg_names[regno] : reg_numchar[regno], \
        !           950:                   push_loc, fp_str);                                   \
        !           951:          push_loc += 4;                                                \
        !           952:        }                                                               \
        !           953:     }                                                                  \
        !           954:   fprintf (FILE, " #\t.fmask\t0x%x\n", fmask);                         \
        !           955:   for  (regno = 32; regno < FIRST_PSEUDO_REGISTER; regno += 2)         \
        !           956:     if (regs_ever_live[regno] && !dont_save_regs[regno])               \
        !           957:       {                                                                        \
        !           958:        fprintf (FILE, "\ts.d\t%s,%d(%s)\n",                            \
        !           959:                 (TARGET_NAME_REGS) ? reg_names[regno] : reg_numchar[regno], \
        !           960:                 push_loc, fp_str);                                     \
        !           961:        push_loc += 8;                                                  \
        !           962:       }                                                                        \
        !           963:   if (frame_pointer_needed)                                            \
        !           964:     fprintf (FILE, "\taddiu\t%s,%s,%d\t#Establish FramePTR\n",         \
        !           965:             (TARGET_NAME_REGS ? reg_names[FRAME_POINTER_REGNUM]        \
        !           966:              : reg_numchar[FRAME_POINTER_REGNUM]),                     \
        !           967:             (TARGET_NAME_REGS ? reg_names[29] : reg_numchar[29]),      \
        !           968:             tsize);                                                    \
        !           969:   fprintf (FILE," #END PROLOGUE\n");                                   \
        !           970: }
        !           971: 
        !           972: /* Output assembler code to FILE to increment profiler label # LABELNO
        !           973:    for profiling a function entry.  */
        !           974: 
        !           975: #define FUNCTION_PROFILER(FILE, LABELNO)                               \
        !           976:    fprintf (FILE, "ERROR\t profiler LP%d,r0\n", (LABELNO));
        !           977: 
        !           978: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
        !           979:    the stack pointer does not matter.  The value is tested only in
        !           980:    functions that have frame pointers.
        !           981:    No definition is equivalent to always zero.  */
        !           982: 
        !           983: extern int may_call_alloca;
        !           984: extern int current_function_pretend_args_size;
        !           985: 
        !           986: #define EXIT_IGNORE_STACK 0
        !           987: 
        !           988: 
        !           989: /* This declaration is needed due to traditional/ANSI
        !           990:    incompatibilities which cannot be #ifdefed away
        !           991:    because they occur inside of macros.  Sigh.  */
        !           992: 
        !           993: 
        !           994: extern union tree_node *current_function_decl;
        !           995: extern char *current_function_name;
        !           996: 
        !           997: /* Tell prologue and epilogue if Register containing return
        !           998:    address should be saved / restored
        !           999: */
        !          1000: 
        !          1001: #define MUST_SAVE_REG_LOGUES (( frame_pointer_needed && (regno == 30)) \
        !          1002:                               ||( (regno == 31) && regs_ever_live[31]) \
        !          1003:                                  )
        !          1004: 
        !          1005: 
        !          1006: /* This macro generates the assembly code for function exit,
        !          1007:    on machines that need it.  If FUNCTION_EPILOGUE is not defined
        !          1008:    then individual return instructions are generated for each
        !          1009:    return statement.  Args are same as for FUNCTION_PROLOGUE.  */
        !          1010: 
        !          1011: 
        !          1012: #define FUNCTION_EPILOGUE(FILE, SIZE)                                  \
        !          1013: { register int regno;                                                  \
        !          1014:   register int mask = 0;                                               \
        !          1015:   register int fmask = 0;                                              \
        !          1016:   char *fp_str;                                                                \
        !          1017:   char *sp_str;                                                                \
        !          1018:   static char dont_save_regs[] = CALL_USED_REGISTERS;                  \
        !          1019:   register int push_loc ;                                              \
        !          1020:   extern char *reg_numchar[];                                          \
        !          1021:   extern char *current_function_name;                                  \
        !          1022:   extern int  current_function_total_framesize;                                \
        !          1023:   push_loc = 0;                                                                \
        !          1024:   regno = STACK_POINTER_REGNUM;                                                \
        !          1025:   sp_str = TARGET_NAME_REGS ? reg_names[STACK_POINTER_REGNUM]          \
        !          1026:     : reg_numchar[STACK_POINTER_REGNUM];                               \
        !          1027:   fp_str = TARGET_NAME_REGS ? reg_names[8]                             \
        !          1028:     :reg_numchar[8];                                                   \
        !          1029:   fprintf (FILE," #EPILOGUE\n");                                       \
        !          1030:   if (!frame_pointer_needed)                                           \
        !          1031:     fprintf (FILE,"#undef __0__gcc\n");                                        \
        !          1032:   else                                                                 \
        !          1033:     fprintf (FILE,"\taddu\t%s,$0,%s\t# sp not trusted  here \n",       \
        !          1034:             fp_str,                                                    \
        !          1035:             TARGET_NAME_REGS ? reg_names[FRAME_POINTER_REGNUM]         \
        !          1036:             :reg_numchar[FRAME_POINTER_REGNUM]                         \
        !          1037:             );                                                         \
        !          1038:   for  (regno = 0; regno < 32; regno++)                                        \
        !          1039:     if  ( MUST_SAVE_REG_LOGUES                                         \
        !          1040:         || (regs_ever_live[regno] && !dont_save_regs[regno]))          \
        !          1041:       mask |= 1 << regno;                                              \
        !          1042:   fprintf  (FILE, " #\t.mask\t0x%x\n", mask);                          \
        !          1043:   for  (regno = 31; regno >= 0; regno--)                               \
        !          1044:     { if  ( MUST_SAVE_REG_LOGUES                                       \
        !          1045:           || (regs_ever_live[regno] && !dont_save_regs[regno]))        \
        !          1046:        {                                                               \
        !          1047:          fprintf (FILE,"\tlw\t%s,%d(%s)\n",                            \
        !          1048:                   TARGET_NAME_REGS ? reg_names[regno]                  \
        !          1049:                   : reg_numchar[regno],                                \
        !          1050:                   (frame_pointer_needed ?                              \
        !          1051:                    push_loc - current_function_total_framesize:        \
        !          1052:                    push_loc),                                          \
        !          1053:                   (frame_pointer_needed ? fp_str :sp_str));            \
        !          1054:          push_loc += 4;                                                \
        !          1055:        }                                                               \
        !          1056:       if ( THIS_VARARGS_SUSPECTED &&  (regno == 30)) push_loc += 16;   \
        !          1057:     }                                                                  \
        !          1058:   for  (regno = 32; regno < FIRST_PSEUDO_REGISTER; regno += 2)         \
        !          1059:     if  (regs_ever_live[regno] && !dont_save_regs[regno])              \
        !          1060:       fmask |= 1 <<  (regno-32);                                       \
        !          1061:   fprintf  (FILE, " #\t.fmask\t0x%x\n", fmask);                                \
        !          1062:     for  (regno = 32; regno < FIRST_PSEUDO_REGISTER; regno += 2)       \
        !          1063:     {                                                                  \
        !          1064:       if  (regs_ever_live[regno] && !dont_save_regs[regno])            \
        !          1065:        {                                                               \
        !          1066:          fprintf (FILE,"\tl.d\t%s,%d(%s)\n",                           \
        !          1067:                   ( ( TARGET_NAME_REGS) ? reg_names[regno]             \
        !          1068:                    : reg_numchar[regno]),                              \
        !          1069:                   (frame_pointer_needed ?                              \
        !          1070:                    push_loc - current_function_total_framesize         \
        !          1071:                    : push_loc),                                        \
        !          1072:                   (frame_pointer_needed ? fp_str :sp_str));            \
        !          1073:          push_loc += 8;                                                \
        !          1074:        }                                                               \
        !          1075:     }                                                                  \
        !          1076:   if (frame_pointer_needed)                                            \
        !          1077:     fprintf (FILE,"\taddu\t%s,$0,%s\t# sp not trusted  here \n",       \
        !          1078:             TARGET_NAME_REGS ? reg_names[STACK_POINTER_REGNUM]         \
        !          1079:             :reg_numchar[STACK_POINTER_REGNUM],                        \
        !          1080:             TARGET_NAME_REGS ? reg_names[8]                            \
        !          1081:             :reg_numchar[8]                                            \
        !          1082:             );                                                         \
        !          1083:   else                                                                 \
        !          1084:     if (regs_ever_live[29]|| regs_ever_live[30]                                \
        !          1085:        || fmask || mask                                                \
        !          1086:        ||  (SIZE > 0))                 \
        !          1087:       fprintf (FILE,"\taddu\t%s,%d\t\n",TARGET_NAME_REGS ? reg_names[29]\
        !          1088:               :reg_numchar[29],current_function_total_framesize);      \
        !          1089:   fprintf (FILE,"\tj\t$31\n");                                         \
        !          1090:   fprintf (FILE," #END EPILOGUE\n");                                   \
        !          1091:   fprintf (FILE," \t.end\t%s\n",current_function_name);                        \
        !          1092:   THIS_VARARGS_NOTSUSPECT; VARARGS_NOTSUSPECT;}
        !          1093: 
        !          1094: /* If the memory Address ADDR is relative to the frame pointer,
        !          1095:    correct it to be relative to the stack pointer. This is for
        !          1096:    when we don't use a frame pointer.
        !          1097:    ADDR should be a variable name.  */
        !          1098: 
        !          1099: #define FIX_FRAME_POINTER_ADDRESS(ADDR,DEPTH)                          \
        !          1100: { rtx newaddr;                                                         \
        !          1101:     int frame_offset = -1;                                             \
        !          1102:     /* fprintf(stderr,"FIX_FRAME depth=%d\n",DEPTH); */                        \
        !          1103:   if(ADDR == frame_pointer_rtx)                                                \
        !          1104:     frame_offset = 0;                                                  \
        !          1105:   else                                                                 \
        !          1106:       if (GET_CODE(ADDR) == PLUS)                                      \
        !          1107:           if(XEXP(ADDR,0) == frame_pointer_rtx)                                \
        !          1108:              if(GET_CODE(XEXP(ADDR,1)) == CONST_INT)                   \
        !          1109:               frame_offset = INTVAL(XEXP(ADDR,1));                     \
        !          1110:              else abort_with_insn(ADDR,"Unable to FIX");               \
        !          1111:           else if (XEXP(ADDR,1) == frame_pointer_rtx)                  \
        !          1112:              if(GET_CODE(XEXP(ADDR,0)) == CONST_INT)                   \
        !          1113:               frame_offset = INTVAL(XEXP(ADDR,0));                     \
        !          1114:              else abort_with_insn(ADDR,"Unable to FIX");               \
        !          1115:          else;                                                         \
        !          1116:    if (frame_offset >= 0)                                              \
        !          1117:     { newaddr=gen_rtx(PLUS,Pmode,stack_pointer_rtx,                    \
        !          1118:                       gen_rtx(PLUS,Pmode,                              \
        !          1119:                           gen_rtx(CONST_INT,VOIDmode,frame_offset+(DEPTH)),\
        !          1120:                              gen_rtx(SYMBOL_REF,SImode,"__0__gcc")));  \
        !          1121:       ADDR = newaddr;                                                  \
        !          1122:     }                                                                  \
        !          1123:   }
        !          1124: 
        !          1125: 
        !          1126: 
        !          1127: /* Addressing modes, and classification of registers for them.  */
        !          1128: 
        !          1129: /* #define HAVE_POST_INCREMENT */
        !          1130: /* #define HAVE_POST_DECREMENT */
        !          1131: 
        !          1132: /* #define HAVE_PRE_DECREMENT */
        !          1133: /* #define HAVE_PRE_INCREMENT */
        !          1134: 
        !          1135: /* These assume that REGNO is a hard or pseudo reg number.
        !          1136:    They give nonzero only if REGNO is a hard reg of the suitable class
        !          1137:    or a pseudo reg currently allocated to a suitable hard reg.
        !          1138:    These definitions are NOT overridden anywhere.  */
        !          1139: 
        !          1140: #define REGNO_OK_FOR_INDEX_P(regno)                                    \
        !          1141: ((regno) < FIRST_PSEUDO_REGISTER || reg_renumber[regno] >= 0)
        !          1142: #define REGNO_OK_FOR_BASE_P(regno)                                     \
        !          1143: ((regno) < FIRST_PSEUDO_REGISTER || reg_renumber[regno] >= 0)
        !          1144: #define REGNO_OK_FOR_FP_P(REGNO)                                       \
        !          1145: (((REGNO) ^ 0x20) < 32 || (unsigned) (reg_renumber[REGNO] ^ 0x20) < 32)
        !          1146: 
        !          1147: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
        !          1148:    and check its validity for a certain class.
        !          1149:    We have two alternate definitions for each of them.
        !          1150:    The usual definition accepts all pseudo regs; the other rejects them all.
        !          1151:    The symbol REG_OK_STRICT causes the latter definition to be used.
        !          1152: 
        !          1153:    Most source files want to accept pseudo regs in the hope that
        !          1154:    they will get allocated to the class that the insn wants them to be in.
        !          1155:    Some source files that are used after register allocation
        !          1156:    need to be strict.  */
        !          1157: 
        !          1158: #ifndef REG_OK_STRICT
        !          1159: 
        !          1160: /* Nonzero if X is a hard reg that can be used as an index or if
        !          1161:    it is a pseudo reg.  */
        !          1162: #define REG_OK_FOR_INDEX_P(X) 1
        !          1163: /* Nonzero if X is a hard reg that can be used as a base reg
        !          1164:    of if it is a pseudo reg.  */
        !          1165: #define REG_OK_FOR_BASE_P(X) 1
        !          1166: 
        !          1167: #else
        !          1168: 
        !          1169: /* Nonzero if X is a hard reg that can be used as an index.  */
        !          1170: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
        !          1171: /* Nonzero if X is a hard reg that can be used as a base reg.  */
        !          1172: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
        !          1173: 
        !          1174: #endif
        !          1175: 
        !          1176: #define REG_OK_FOR_CLASS_P(X, C) 0
        !          1177: 
        !          1178: #define REGNO_OK_FOR_CLASS_P(X, C)  0
        !          1179: 
        !          1180: #define ADDRESS_REG_P(X)                                               \
        !          1181:   (GET_CODE (X) == REG )
        !          1182: 
        !          1183: /* 1 if X is an fp register.  */
        !          1184: 
        !          1185: #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X)))
        !          1186: 
        !          1187: /* Maximum number of registers that can appear in a valid memory address.  */
        !          1188: 
        !          1189: #define MAX_REGS_PER_ADDRESS 1
        !          1190: 
        !          1191: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
        !          1192:    that is a valid memory address for an instruction.
        !          1193:    The MODE argument is the machine mode for the MEM expression
        !          1194:    that wants to use this address.
        !          1195: 
        !          1196:    The other macros defined here are used only in GO_IF_LEGITIMATE_ADDRESS,
        !          1197:    except for CONSTANT_ADDRESS_P which is actually machine-independent.  */
        !          1198: 
        !          1199: /* 1 if X is an address that we could indirect through.  */
        !          1200: #define INDIRECTABLE_ADDRESS_P(X)                                      \
        !          1201:   (CONSTANT_ADDRESS_P (X)                                              \
        !          1202:    || (GET_CODE (X) == REG && REG_OK_FOR_BASE_P (X))                   \
        !          1203:    || (GET_CODE (X) == PLUS                                            \
        !          1204:        && GET_CODE (XEXP (X, 0)) == REG                                        \
        !          1205:        && REG_OK_FOR_BASE_P (XEXP (X, 0))                              \
        !          1206:        && CONSTANT_ADDRESS_P (XEXP (X, 1))))
        !          1207: 
        !          1208: 
        !          1209: 
        !          1210: /* 1 if X is an address which is (+ (reg) (+ (const_int) (symbol_ref)  )) */
        !          1211: #define FIXED_FRAME_PTR_REL_P(X)                                       \
        !          1212:   (    (GET_CODE(X) == PLUS)                                           \
        !          1213:    &&  (GET_CODE(XEXP((X),0)) == REG)                                  \
        !          1214:    &&  (GET_CODE(XEXP((X),1)) == PLUS)                                 \
        !          1215:    &&  (GET_CODE(XEXP(XEXP((X),1),0)) == CONST_INT)                    \
        !          1216:    &&   (GET_CODE(XEXP(XEXP((X),1),1)) == SYMBOL_REF))
        !          1217: 
        !          1218: /* Go to ADDR if X is a valid address not using indexing.
        !          1219:    (This much is the easy part.)  */
        !          1220: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)                                \
        !          1221: { register rtx xfoob = (X);                                            \
        !          1222:   if (GET_CODE (xfoob) == REG) goto ADDR;                              \
        !          1223:   if (INDIRECTABLE_ADDRESS_P (xfoob))   goto ADDR;                     \
        !          1224:   if (FIXED_FRAME_PTR_REL_P (xfoob))    goto ADDR;                      \
        !          1225:   }
        !          1226: 
        !          1227: 
        !          1228: 
        !          1229: 
        !          1230: #define CONSTANT_ADDRESS_P(X)                                          \
        !          1231:   (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF             \
        !          1232:    || GET_CODE (X) == CONST_INT                                                \
        !          1233:    || GET_CODE (X) == CONST)
        !          1234: 
        !          1235: /* Nonzero if the constant value X is a legitimate general operand.
        !          1236:    It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE.
        !          1237: 
        !          1238:    Anything but a CONST_DOUBLE can be made to work.  */
        !          1239: 
        !          1240: #define LEGITIMATE_CONSTANT_P(X)                                       \
        !          1241:  (GET_CODE (X) != CONST_DOUBLE)
        !          1242: 
        !          1243: /* Try machine-dependent ways of modifying an illegitimate address
        !          1244:    to be legitimate.  If we find one, return the new, valid address.
        !          1245:    This macro is used in only one place: `memory_address' in explow.c.
        !          1246: 
        !          1247:    OLDX is the address as it was before break_out_memory_refs was called.
        !          1248:    In some cases it is useful to look at this to decide what needs to be done.
        !          1249: 
        !          1250:    MODE and WIN are passed so that this macro can use
        !          1251:    GO_IF_LEGITIMATE_ADDRESS.
        !          1252: 
        !          1253:    It is always safe for this macro to do nothing.  It exists to recognize
        !          1254:    opportunities to optimize the output.
        !          1255: 
        !          1256:    For the MIPS (so far ..), nothing needs to be done.
        !          1257: 
        !          1258:    ACHTUNG this is actually used by the FLOW analysis to get rid
        !          1259:    of statements....
        !          1260: 
        !          1261: */
        !          1262: 
        !          1263: #define LEGITIMIZE_ADDRESS(X,OLDX,MODE,WIN)  {}
        !          1264: 
        !          1265: /* Go to LABEL if ADDR (a legitimate address expression)
        !          1266:    has an effect that depends on the machine mode it is used for.
        !          1267: */
        !          1268: 
        !          1269:                                /* See if this is of any use here */
        !          1270: 
        !          1271: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)                       \
        !          1272: { }
        !          1273: 
        !          1274: 
        !          1275: /* Specify the machine mode that this machine uses
        !          1276:    for the index in the tablejump instruction.  */
        !          1277: #define CASE_VECTOR_MODE SImode
        !          1278: 
        !          1279: /* Define this if the tablejump instruction expects the table
        !          1280:    to contain offsets from the address of the table.
        !          1281:    Do not define this if the table should contain absolute addresses.  */
        !          1282: /* #define CASE_VECTOR_PC_RELATIVE */
        !          1283: 
        !          1284: /* Specify the tree operation to be used to convert reals to integers.  */
        !          1285: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
        !          1286: 
        !          1287: /* This is the kind of divide that is easiest to do in the general case.  */
        !          1288: #define EASY_DIV_EXPR TRUNC_DIV_EXPR
        !          1289: 
        !          1290: /* Define this as 1 if `char' should by default be signed; else as 0.  */
        !          1291: #define DEFAULT_SIGNED_CHAR 1
        !          1292: 
        !          1293: /* Max number of bytes we can move from memory to memory
        !          1294:    in one reasonably fast instruction.  */
        !          1295: #define MOVE_MAX 4
        !          1296: 
        !          1297: /* Nonzero if access to memory by bytes is slow and undesirable.  */
        !          1298: #define SLOW_BYTE_ACCESS 0
        !          1299: 
        !          1300: /* On Sun 4, this limit is 2048.  We use 1500 to be safe,
        !          1301:    since the length can run past this up to a continuation point.  */
        !          1302: #define DBX_CONTIN_LENGTH 1500
        !          1303: 
        !          1304: /* We assume that the store-condition-codes instructions store 0 for false
        !          1305:    and some other value for true.  This is the value stored for true.  */
        !          1306: 
        !          1307: #define STORE_FLAG_VALUE 1
        !          1308: 
        !          1309: /* Define this if zero-extension is slow (more than one real instruction).  */
        !          1310: #define SLOW_ZERO_EXTEND
        !          1311: 
        !          1312: /* Define if shifts truncate the shift count
        !          1313:    which implies one can omit a sign-extension or zero-extension
        !          1314:    of a shift count.
        !          1315: 
        !          1316:    Only 5 bits are used in SLLV and SRLV
        !          1317: */
        !          1318: #define SHIFT_COUNT_TRUNCATED
        !          1319: 
        !          1320: 
        !          1321: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
        !          1322:    is done just by pretending it is already truncated.  */
        !          1323: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
        !          1324: 
        !          1325: /* Specify the machine mode that pointers have.
        !          1326:    After generation of rtl, the compiler makes no further distinction
        !          1327:    between pointers and any other objects of this machine mode.  */
        !          1328: #define Pmode SImode
        !          1329: 
        !          1330: /* A function address in a call instruction
        !          1331:    is a word address (for indexing purposes)
        !          1332:    so give the MEM rtx a words's mode.  */
        !          1333: 
        !          1334: #define FUNCTION_MODE SImode
        !          1335: 
        !          1336: /* Compute the cost of computing a constant rtl expression RTX
        !          1337:    whose rtx-code is CODE.  The body of this macro is a portion
        !          1338:    of a switch statement.  If the code is computed here,
        !          1339:    return it with a return statement.  Otherwise, break from the switch.  */
        !          1340: 
        !          1341: #define CONST_COSTS(RTX,CODE)                                          \
        !          1342:   case CONST_INT:                                                      \
        !          1343:     /* Constant zero is super cheap due to register 0.  */             \
        !          1344:     if (RTX == const0_rtx) return 0;                                   \
        !          1345:     if ((INTVAL (RTX) < 0x7fff) && (- INTVAL(RTX) < 0x7fff)) return 1; \
        !          1346:   case CONST:                                                          \
        !          1347:   case LABEL_REF:                                                      \
        !          1348:   case SYMBOL_REF:                                                     \
        !          1349:     return 3;                                                          \
        !          1350:   case CONST_DOUBLE:                                                   \
        !          1351:     return 5;
        !          1352: 
        !          1353: /* Tell final.c how to eliminate redundant test instructions.  */
        !          1354: 
        !          1355: /* Here we define machine-dependent flags and fields in cc_status
        !          1356:    (see `conditions.h').  No extra ones are needed for the vax.  */
        !          1357: /* Tell final.c how to eliminate redundant test instructions.  */
        !          1358: 
        !          1359: /* Tell final.c how to eliminate redundant test instructions.  */
        !          1360: 
        !          1361: /* Here we define machine-dependent flags and fields in cc_status
        !          1362:    (see `conditions.h').  No extra ones are needed for the vax.  */
        !          1363: 
        !          1364: /* Store in cc_status the expressions
        !          1365:    that the condition codes will describe
        !          1366:    after execution of an instruction whose pattern is EXP.
        !          1367:    Do not alter them if the instruction would not alter the cc's.  */
        !          1368: 
        !          1369: #define NOTICE_UPDATE_CC(EXP, INSN)                                    \
        !          1370:   CC_STATUS_INIT;
        !          1371: 
        !          1372: 
        !          1373: /* Here we define machine-dependent flags and fields in cc_status
        !          1374:    (see `conditions.h').   */
        !          1375: 
        !          1376: 
        !          1377: /* Control the assembler format that we output.  */
        !          1378: 
        !          1379: /* Output at beginning of assembler file.  */
        !          1380: 
        !          1381: #define ASM_FILE_START(FILE)                                           \
        !          1382: {                                                                      \
        !          1383:   if (TARGET_NAME_REGS)                                                        \
        !          1384:     fprintf (FILE, "#include <regdef.h>\n\t.verstamp\t%s\n", TARGET_VERSNUM);\
        !          1385:   else fprintf (FILE, " #\t.verstamp\t%s\n", TARGET_VERSNUM);          \
        !          1386: /* print_options(FILE);  */                                            \
        !          1387:   if (TARGET_GP_OPT)                                                   \
        !          1388:     fprintf (FILE, "#ifdef %sRESCAN_GCC\n", "__x_");                   \
        !          1389: }
        !          1390: 
        !          1391: /* Output to assembler file text saying following lines
        !          1392:    may contain character constants, extra white space, comments, etc.  */
        !          1393: 
        !          1394: #define ASM_APP_ON " #APP\n"
        !          1395: 
        !          1396: /* Output to assembler file text saying following lines
        !          1397:    no longer contain unusual constructs.  */
        !          1398: 
        !          1399: #define ASM_APP_OFF " #NO_APP\n"
        !          1400: 
        !          1401: /* Output before read-only data.  */
        !          1402: 
        !          1403: #define TEXT_SECTION_ASM_OP ".text"
        !          1404: 
        !          1405: /* Output before writable data.  */
        !          1406: 
        !          1407: #define DATA_SECTION_ASM_OP ".data"
        !          1408: 
        !          1409: #define  ASM_OUTPUT_MIPS_SECTIONS
        !          1410: #define  OUTPUT_MIPS_SECTION_THRESHOLD  ((mips_section_threshold >= 0 )?\
        !          1411:                                        mips_section_threshold : mips_section_get())
        !          1412: 
        !          1413: /* Output before writable  short data.  */
        !          1414: 
        !          1415: #define SDATA_SECTION_ASM_OP ".sdata"
        !          1416: 
        !          1417: /* How to refer to registers in assembler output.
        !          1418:    This sequence is indexed by compiler's hard-register-number (see above).  */
        !          1419: 
        !          1420: #define REGISTER_NAMES                                                 \
        !          1421: {"$0", "at", "v0", "v1", "a0", "a1", "a2", "a3", "t0",                 \
        !          1422:  "t1", "t2", "t3", "t4", "t5", "t6", "t7","s0",                                \
        !          1423:  "s1","s2","s3","s4","s5","s6","s7","t8","t9",                         \
        !          1424:  "k0","k1","gp","sp","fp","ra",                                                \
        !          1425:  "$f0","$f1","$f2","$f3","$f4","$f5","$f6","$f7","$f8","$f9",          \
        !          1426: "$f10","$f11","$f12","$f13","$f14","$f15","$f16","$f17","$f18","$f19", \
        !          1427: "$f20","$f21","$f22","$f23","$f24","$f25","$f26","$f27","$f28","$f29", \
        !          1428: "$f30","$f31"                                                          \
        !          1429: }
        !          1430: #define REGISTER_NUMCHAR                                               \
        !          1431: {                                                                      \
        !          1432: "$0","$1","$2","$3","$4","$5","$6","$7","$8","$9",                     \
        !          1433: "$10","$11","$12","$13","$14","$15","$16","$17","$18","$19",           \
        !          1434: "$20","$21","$22","$23","$24","$25","$26","$27","$28","$29",           \
        !          1435: "$30","$31",                                                           \
        !          1436: "$f0","$f1","$f2","$f3","$f4","$f5","$f6","$f7","$f8","$f9",           \
        !          1437: "$f10","$f11","$f12","$f13","$f14","$f15","$f16","$f17","$f18","$f19", \
        !          1438: "$f20","$f21","$f22","$f23","$f24","$f25","$f26","$f27","$f28","$f29", \
        !          1439: "$f30","$f31"                                                          \
        !          1440: }
        !          1441: 
        !          1442: 
        !          1443: /* How to renumber registers for dbx and gdb.
        !          1444:    MIPS needs no change in the numeration.  */
        !          1445: 
        !          1446: #define DBX_REGISTER_NUMBER(REGNO) (REGNO)
        !          1447: 
        !          1448: /* Define results of standard character escape sequences.  */
        !          1449: #define TARGET_BELL 007
        !          1450: #define TARGET_BS 010
        !          1451: #define TARGET_TAB 011
        !          1452: #define TARGET_NEWLINE 012
        !          1453: #define TARGET_VT 013
        !          1454: #define TARGET_FF 014
        !          1455: #define TARGET_CR 015
        !          1456: 
        !          1457:                                /*  LIST OF PRINT OPERAND CODES
        !          1458: 
        !          1459: 
        !          1460:                                /* 'x'  X is CONST_INT, prints 16 bits in
        !          1461:                                **      Hexadecimal format = "0x%4x",
        !          1462:                                ** 'd'  output integer constant in decimal,
        !          1463:                                ** 'u'  Prints an 'u' if flag -mnofixed-ovfl
        !          1464:                                **      has been set, thus selecting addu
        !          1465:                                **      instruction instead of add.
        !          1466:                                */
        !          1467: 
        !          1468: 
        !          1469: /* Print an instruction operand X on file FILE.
        !          1470:    CODE is the code from the %-spec that requested printing this operand;
        !          1471:    if `%z3' was used to print operand 3, then CODE is 'z'.
        !          1472:    CODE is used as follows:
        !          1473: 
        !          1474:                                    LIST OF PRINT OPERAND CODES
        !          1475: 
        !          1476: 
        !          1477:                                   'x'  X is CONST_INT, prints 16 bits in
        !          1478:                                **      Hexadecimal format = "0x%4x",
        !          1479:                                ** 'd'  output integer constant in decimal,
        !          1480:                                ** ':'  Prints an 'u' if flag -mnofixed-ovfl
        !          1481:                                **      has been set, thus selecting addu
        !          1482:                                **      instruction instead of add.
        !          1483:                                */
        !          1484: 
        !          1485: #define PRINT_OPERAND_PUNCT_VALID_P(CODE)                              \
        !          1486:   ((CODE) == ':')
        !          1487: 
        !          1488: #define PRINT_OPERAND(FILE, X, CODE)                                   \
        !          1489: { if ((CODE) == ':')                                                   \
        !          1490:     {if (TARGET_NOFIXED_OVFL)fprintf(FILE,"u");}                       \
        !          1491:   else if (GET_CODE (X) == REG)                                                \
        !          1492:     { extern char *reg_numchar[];                                      \
        !          1493:       fprintf (FILE, "%s", TARGET_NAME_REGS ?reg_names[REGNO (X)]      \
        !          1494:               :reg_numchar[REGNO (X) ]);                               \
        !          1495:     }                                                                  \
        !          1496:   else                                                                 \
        !          1497:     {                                                                  \
        !          1498:       if (GET_CODE (X) == MEM)                                         \
        !          1499:        output_address (XEXP (X, 0));                                   \
        !          1500:       else if (GET_CODE (X) == CONST_DOUBLE)                           \
        !          1501:        { union { double d; int i[2]; } u;                              \
        !          1502:          union { float f; int i; } u1;                                 \
        !          1503:          u.i[0] = CONST_DOUBLE_LOW (X);                                \
        !          1504:          u.i[1] = CONST_DOUBLE_HIGH (X);                               \
        !          1505:          u1.f = u.d;                                                   \
        !          1506:          if (GET_MODE (X) == SFmode)                                   \
        !          1507:            u.d = u1.f;                                                 \
        !          1508:          fprintf (FILE, "%.20e", u.d); }                               \
        !          1509:       else                                                             \
        !          1510:        { if ((CODE == 'x') && (GET_CODE(X) == CONST_INT))              \
        !          1511:            fprintf(FILE,"0x%x",0xffff & (INTVAL(X)));                  \
        !          1512:          else { if ((CODE == 'd') && (GET_CODE(X) == CONST_INT))       \
        !          1513:                   fprintf(FILE,"%d",(INTVAL(X)));                      \
        !          1514:                 else                                                   \
        !          1515:                   {                                                    \
        !          1516:                      if ((CODE) == 'd') abort();                       \
        !          1517:                      else output_addr_const (FILE, X);}                \
        !          1518:                }}}}
        !          1519: 
        !          1520: /* Print a memory operand whose address is X, on file FILE.  */
        !          1521: 
        !          1522: #define PRINT_OPERAND_ADDRESS(FILE, ADDR)                              \
        !          1523: { register rtx reg1, reg2, breg, ireg;                                 \
        !          1524:   register rtx addr = ADDR;                                            \
        !          1525:   rtx offset;                                                          \
        !          1526:   extern char *reg_numchar[];                                          \
        !          1527: /*     my_print_rtx(addr);*/                                           \
        !          1528:  retry:                                                                        \
        !          1529:   switch (GET_CODE (addr))                                             \
        !          1530:     {                                                                  \
        !          1531:     case REG:                                                          \
        !          1532:       fprintf (FILE, "0(%s)", TARGET_NAME_REGS ? reg_names [REGNO (addr)]\
        !          1533:               : reg_numchar[REGNO(addr)]);                             \
        !          1534:       break;                                                           \
        !          1535:     case MEM:                                                          \
        !          1536:     case PRE_DEC:                                                      \
        !          1537:     case POST_INC:                                                     \
        !          1538:       abort();                                                         \
        !          1539:       break;                                                           \
        !          1540:     case PLUS:                                                         \
        !          1541:       if(   (GET_CODE (XEXP(addr,0)) == REG)                           \
        !          1542:          && (GET_CODE (XEXP(addr,1)) == PLUS)                          \
        !          1543:          && (GET_CODE (XEXP(XEXP(addr,1),1)) == SYMBOL_REF)            \
        !          1544:          && (GET_CODE (XEXP(XEXP(addr,1),0)) == CONST_INT))            \
        !          1545:        {output_address(XEXP(XEXP(addr,1),0));                          \
        !          1546:          fprintf(FILE,"+");                                            \
        !          1547:          output_address(XEXP(XEXP(addr,1),1));                         \
        !          1548:          breg = XEXP(addr,0);                                          \
        !          1549:         fprintf(FILE,"(%s)", TARGET_NAME_REGS ?                        \
        !          1550:                   reg_names[REGNO (breg)]: reg_numchar[REGNO(breg)]);  \
        !          1551:         break;                                                         \
        !          1552:         }                                                              \
        !          1553:                                                                        \
        !          1554:       reg1 = 0;        reg2 = 0;                                               \
        !          1555:       ireg = 0;        breg = 0;                                               \
        !          1556:       offset = 0;                                                      \
        !          1557:         /*fprintf(stderr,"PRINT_OPERAND_ADDRESS"); */                  \
        !          1558:       if (CONSTANT_ADDRESS_P (XEXP (addr, 0))                          \
        !          1559:          || GET_CODE (XEXP (addr, 0)) == MEM)                          \
        !          1560:        {                                                               \
        !          1561:          offset = XEXP (addr, 0);                                      \
        !          1562:          addr = XEXP (addr, 1);                                        \
        !          1563:        }                                                               \
        !          1564:       else if (CONSTANT_ADDRESS_P (XEXP (addr, 1))                     \
        !          1565:               || GET_CODE (XEXP (addr, 1)) == MEM)                     \
        !          1566:        {                                                               \
        !          1567:          offset = XEXP (addr, 1);                                      \
        !          1568:          addr = XEXP (addr, 0);                                        \
        !          1569:        }                                                               \
        !          1570:       if (GET_CODE (addr) != PLUS) ;                                   \
        !          1571:       else if (GET_CODE (XEXP (addr, 0)) == MULT)                      \
        !          1572:        {                                                               \
        !          1573:          reg1 = XEXP (addr, 0);                                        \
        !          1574:          addr = XEXP (addr, 1);                                        \
        !          1575:        }                                                               \
        !          1576:       else if (GET_CODE (XEXP (addr, 1)) == MULT)                      \
        !          1577:        {                                                               \
        !          1578:          reg1 = XEXP (addr, 1);                                        \
        !          1579:          addr = XEXP (addr, 0);                                        \
        !          1580:        }                                                               \
        !          1581:       else if (GET_CODE (XEXP (addr, 0)) == REG)                       \
        !          1582:        {                                                               \
        !          1583:          reg1 = XEXP (addr, 0);                                        \
        !          1584:          addr = XEXP (addr, 1);                                        \
        !          1585:        }                                                               \
        !          1586:       else if (GET_CODE (XEXP (addr, 1)) == REG)                       \
        !          1587:        {                                                               \
        !          1588:          reg1 = XEXP (addr, 1);                                        \
        !          1589:          addr = XEXP (addr, 0);                                        \
        !          1590:        }                                                               \
        !          1591:       if (GET_CODE (addr) == REG || GET_CODE (addr) == MULT)           \
        !          1592:        { if (reg1 == 0) reg1 = addr; else reg2 = addr; addr = 0; }     \
        !          1593:       if (offset != 0) { if (addr != 0) abort (); addr = offset; }     \
        !          1594:       if (reg1 != 0 && GET_CODE (reg1) == MULT)                                \
        !          1595:        { breg = reg2; ireg = reg1; }                                   \
        !          1596:       else if (reg2 != 0 && GET_CODE (reg2) == MULT)                   \
        !          1597:        { breg = reg1; ireg = reg2; }                                   \
        !          1598:       else if (reg2 != 0 || GET_CODE (addr) == MEM)                    \
        !          1599:        { breg = reg2; ireg = reg1; }                                   \
        !          1600:       else                                                             \
        !          1601:        { breg = reg1; ireg = reg2; }                                   \
        !          1602:       if (addr != 0)                                                   \
        !          1603:        output_address (offset);                                        \
        !          1604:       if (breg != 0)                                                   \
        !          1605:        { if (GET_CODE (breg) != REG) abort ();                         \
        !          1606:          fprintf (FILE, "(%s)", TARGET_NAME_REGS ?                     \
        !          1607:                   reg_names[REGNO (breg)]: reg_numchar[REGNO(breg)]); }\
        !          1608:       if (ireg != 0)                                                   \
        !          1609:        { if (GET_CODE (ireg) == MULT) ireg = XEXP (ireg, 0);           \
        !          1610:          if (GET_CODE (ireg) != REG) abort ();                         \
        !          1611:          fprintf (FILE, "[%s]",  TARGET_NAME_REGS ?                    \
        !          1612:                   reg_names[REGNO (ireg)]: reg_numchar[REGNO(ireg)]); }\
        !          1613:       break;                                                           \
        !          1614:     default:                                                           \
        !          1615:       output_addr_const (FILE, addr);                                  \
        !          1616:     }}
        !          1617: 
        !          1618: 
        !          1619: /* This is how to output a note to DBX telling it the line number
        !          1620:    to which the following sequence of instructions corresponds.
        !          1621: 
        !          1622:    This is needed for SunOS 4.0, and should not hurt for 3.2
        !          1623:    versions either.  */
        !          1624: #define ASM_OUTPUT_SOURCE_LINE(file, line)                             \
        !          1625:   { static int sym_lineno = 1;                                         \
        !          1626:     fprintf (file, " #.stabn 68,0,%d,LM%d\nLM%d:\n",                   \
        !          1627:             line, sym_lineno, sym_lineno);                             \
        !          1628:     sym_lineno += 1; }
        !          1629: 
        !          1630: /* This is how to output the definition of a user-level label named NAME,
        !          1631:    such as the label on a static function or variable NAME.  */
        !          1632: 
        !          1633: #define ASM_OUTPUT_LABEL(FILE,NAME)                                    \
        !          1634:   do { assemble_name (FILE, NAME); fputs (":\n", FILE); } while (0)
        !          1635: 
        !          1636: /* This is how to output a command to make the user-level label named NAME
        !          1637:    defined for reference from other files.  */
        !          1638: 
        !          1639: #define ASM_GLOBALIZE_LABEL(FILE,NAME)                                 \
        !          1640:   do { fputs ("\t.globl ", FILE); assemble_name (FILE, NAME);          \
        !          1641:        fputs ("\n", FILE);                                             \
        !          1642:        if(TARGET_GP_OPT) {fputs ("#define _gccx__",FILE);              \
        !          1643:        assemble_name(FILE,NAME);                                       \
        !          1644:        fputs ("\n", FILE);                                             \
        !          1645:        }                                                               \
        !          1646:      } while (0)
        !          1647: 
        !          1648: #define ASM_DECLARE_FUNCTION_NAME(FILE,NAME,DECL)                      \
        !          1649:   fprintf(FILE,"\t.ent\t%s\n",NAME);                                   \
        !          1650:   current_function_name = NAME;                                                \
        !          1651:   ASM_OUTPUT_LABEL(FILE,NAME);
        !          1652: 
        !          1653: /* This is how to output a reference to a user-level label named NAME.
        !          1654:    `assemble_name' uses this.  */
        !          1655: 
        !          1656: #define ASM_OUTPUT_LABELREF(FILE,NAME)                                 \
        !          1657:   fprintf (FILE, "%s", NAME)
        !          1658: 
        !          1659: /* This is how to output an internal numbered label where
        !          1660:    PREFIX is the class of label and NUM is the number within the class.  */
        !          1661: 
        !          1662: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)                     \
        !          1663:   fprintf (FILE, "%s%d:\n", PREFIX, NUM)
        !          1664: 
        !          1665: /* This is how to store into the string LABEL
        !          1666:    the symbol_ref name of an internal numbered label where
        !          1667:    PREFIX is the class of label and NUM is the number within the class.
        !          1668:    This is suitable for output with `assemble_name'.  */
        !          1669: 
        !          1670: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)                  \
        !          1671:   sprintf (LABEL, "*%s%d", PREFIX, NUM)
        !          1672: 
        !          1673: /* This is how to output an assembler line defining a `double' constant.  */
        !          1674: 
        !          1675: #define ASM_OUTPUT_DOUBLE(FILE,VALUE)                                  \
        !          1676:   fprintf (FILE, "\t.double %.20e\n", (VALUE))
        !          1677: 
        !          1678: /* This is how to output an assembler line defining a `float' constant.  */
        !          1679: 
        !          1680: #define ASM_OUTPUT_FLOAT(FILE,VALUE)                                   \
        !          1681:   fprintf (FILE, "\t.float %.12e\n", (VALUE))
        !          1682: 
        !          1683: /* This is how to output an assembler line defining an `int' constant.  */
        !          1684: 
        !          1685: #define ASM_OUTPUT_INT(FILE,VALUE)                                     \
        !          1686: ( fprintf (FILE, "\t.word "),                                          \
        !          1687:   output_addr_const (FILE, (VALUE)),                                   \
        !          1688:   fprintf (FILE, "\n"))
        !          1689: 
        !          1690: /* Likewise for `char' and `short' constants.  */
        !          1691: 
        !          1692: #define ASM_OUTPUT_SHORT(FILE,VALUE)                                   \
        !          1693: ( fprintf (FILE, "\t.half "),                                          \
        !          1694:   output_addr_const (FILE, (VALUE)),                                   \
        !          1695:   fprintf (FILE, "\n"))
        !          1696: 
        !          1697: #define ASM_OUTPUT_CHAR(FILE,VALUE)                                    \
        !          1698: ( fprintf (FILE, "\t.byte "),                                          \
        !          1699:   output_addr_const (FILE, (VALUE)),                                   \
        !          1700:   fprintf (FILE, "\n"))
        !          1701: 
        !          1702: /* This is how to output an assembler line for a numeric constant byte.  */
        !          1703: 
        !          1704: #define ASM_OUTPUT_BYTE(FILE,VALUE)                                    \
        !          1705:   fprintf (FILE, "\t.byte 0x%x\n", (VALUE))
        !          1706: 
        !          1707: /* This is how to output an element of a case-vector that is absolute.  */
        !          1708: 
        !          1709: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)                           \
        !          1710:   fprintf (FILE, "\t.word L%d\n", VALUE)
        !          1711: 
        !          1712: /* This is how to output an element of a case-vector that is relative.
        !          1713:    (We  do not use such vectors,
        !          1714:    but we must define this macro anyway.)  */
        !          1715: 
        !          1716: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)                     \
        !          1717:   fprintf (FILE, "\t.word L%d-L%d\n", VALUE, REL)
        !          1718: 
        !          1719: /* This is how to output an assembler line
        !          1720:    that says to advance the location counter
        !          1721:    to a multiple of 2**LOG bytes.  */
        !          1722: 
        !          1723: #define ASM_OUTPUT_ALIGN(FILE,LOG)                                     \
        !          1724:     fprintf (FILE, "\t.align %d\n", (LOG))
        !          1725: 
        !          1726: #define ASM_OUTPUT_SKIP(FILE,SIZE)                                     \
        !          1727:   fprintf (FILE, "\t.space %d\n", (SIZE))
        !          1728: 
        !          1729: /* The support of .comm and .extern  below permits to take advantage
        !          1730:    of the SDATA/SBSS sections supported by the MIPS ASSEMBLER and LOADER
        !          1731:    However some problems have to be solved
        !          1732:         a/  externs should be included ONCE
        !          1733:        b/  the same external cannot appear both on an extern and .comm stmt
        !          1734:            in the same assembly
        !          1735:        c/  for the whole scheme to bring some benefit, .comm should appear
        !          1736:            in front of the source asm -- whereas GCC put them at the end
        !          1737: */
        !          1738: 
        !          1739: 
        !          1740:                                /* ALL THESE PROBLEMS ARE PRESENTLY SOLVED   */
        !          1741:                                /* USING CONDITIONAL ASSEMBLY + FILE RESCAN  */
        !          1742: 
        !          1743: #define EXTRA_SECTIONS in_sdata
        !          1744: 
        !          1745: /* Define the additional functions to select our additional sections.  */
        !          1746: 
        !          1747:        /* on the MIPS it is not a good idea to put constants  in the
        !          1748:          text section, since this defeats the sdata/data mechanism. This
        !          1749:          is especially true when -O2 is used. In this case an effort is
        !          1750:          made to address with faster (gp) register relative addressing,
        !          1751:          which can only get at sdata and sbss items (there is no stext !!)
        !          1752:        */
        !          1753: #define EXTRA_SECTION_FUNCTIONS                                                \
        !          1754: void                                                                   \
        !          1755: sdata_section ()                                                       \
        !          1756: {                                                                      \
        !          1757:   if (in_section != in_sdata)                                          \
        !          1758:     {                                                                  \
        !          1759:       fprintf (asm_out_file, "%s\n", SDATA_SECTION_ASM_OP);            \
        !          1760:       in_section = in_sdata;                                           \
        !          1761:     }                                                          \
        !          1762: }
        !          1763: 
        !          1764: /* Given a decl node or constant node, choose the section to output it in
        !          1765:    and select that section.  */
        !          1766: 
        !          1767:        /* following takes  care of constants  emitted from
        !          1768:          the hash table entries (see above comment)
        !          1769:        */
        !          1770: #define SELECT_SECTION_MODE(MODE,RTX)                                  \
        !          1771: {                                                                      \
        !          1772:   extern int mips_section_threshold;                                   \
        !          1773:   if (( GET_MODE_SIZE(MODE)/ BITS_PER_UNIT)                            \
        !          1774:              <= OUTPUT_MIPS_SECTION_THRESHOLD)                         \
        !          1775:            sdata_section();                                            \
        !          1776:          else                                                          \
        !          1777:            data_section ();                                            \
        !          1778: }                                                                      \
        !          1779: 
        !          1780: #define SELECT_SECTION(DECL)                                           \
        !          1781: {                                                                      \
        !          1782:   extern int mips_section_threshold;                                   \
        !          1783:          if (int_size_in_bytes (TREE_TYPE (DECL))                      \
        !          1784:              <= OUTPUT_MIPS_SECTION_THRESHOLD)                         \
        !          1785:            sdata_section ();                                           \
        !          1786:          else                                                          \
        !          1787:            data_section ();                                            \
        !          1788: }
        !          1789: 
        !          1790: /* This says how to output an assembler line
        !          1791:    to define a global common symbol.  */
        !          1792: 
        !          1793: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)                   \
        !          1794: ( ((TARGET_GP_OPT)?                                                    \
        !          1795:    fprintf((FILE),"\n#else"),0 :0),                                    \
        !          1796:  fputs ("\n\t.comm ", (FILE)),                                         \
        !          1797:  assemble_name ((FILE), (NAME)),                                       \
        !          1798:  fprintf ((FILE), ",%d\n", (ROUNDED)),                                 \
        !          1799:  (TARGET_GP_OPT ? (fputs("\n#define _gccx__",(FILE)),                  \
        !          1800:                   assemble_name((FILE),NAME),0):0),                    \
        !          1801:  ((TARGET_GP_OPT)?                                                     \
        !          1802:   fprintf((FILE),"\n#endif\n#ifdef %sRESCAN_GCC","__x_"),0 :0)         \
        !          1803: )
        !          1804: 
        !          1805: 
        !          1806: /* This says how to output an external                                      */
        !          1807: /* It would be possible not to output anything and let undefined            */
        !          1808: /* symbol become external. However the assembler uses length  information on*/
        !          1809: /* externals to allocate in data/sdata bss/sbss, thereby saving exec time   */
        !          1810: 
        !          1811: #define ASM_OUTPUT_EXTERNAL(FILE,DECL,NAME)                            \
        !          1812:         mips_output_external(FILE,DECL,NAME)
        !          1813: 
        !          1814: 
        !          1815: /* This says how to output an assembler line
        !          1816:    to define a local common symbol.  */
        !          1817: 
        !          1818: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)                    \
        !          1819: ( fputs ("\n\t.lcomm\t", (FILE)),                                      \
        !          1820:   assemble_name ((FILE), (NAME)),                                      \
        !          1821:   fprintf ((FILE), ",%d\n", (ROUNDED)))
        !          1822: 
        !          1823: /* This says what to print at the end of the assembly file */
        !          1824: #define ASM_FILE_END(FILE)                                             \
        !          1825:        mips_asm_file_end(FILE)
        !          1826: 
        !          1827: /* Store in OUTPUT a string (made with alloca) containing
        !          1828:    an assembler-name for a local static variable named NAME.
        !          1829:    LABELNO is an integer which is different for each call.  */
        !          1830: 
        !          1831: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO)                 \
        !          1832: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 10),                   \
        !          1833:   sprintf ((OUTPUT), "%s.%d", (NAME), (LABELNO)))
        !          1834: 
        !          1835: #define ASM_OUTPUT_REG_POP(FILE,REGNO)                                 \
        !          1836:   (fprintf (FILE,"ERROR: ASM_OUTPUT_REG_POP\n"))
        !          1837: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO)                                        \
        !          1838:   (fprintf (FILE,"ERROR: ASM_OUTPUT_REG_PUSH\n"))
        !          1839: 
        !          1840:                                /*  The following macro is taken from the    */
        !          1841:                                /*  C-text of varasm.c. It has been modified */
        !          1842:                                /*  to handle the VARARG_SUSPECTED hack      */
        !          1843: #define  ASM_OUTPUT_ASCII(FILE, P , SIZE)                              \
        !          1844: {  int i;                                                              \
        !          1845:          fprintf ((FILE), "\t.ascii \"");                              \
        !          1846:           VARARGS_SUSPECT( 0 == strncmp((P),"__%%VARARGS",11));                \
        !          1847:          for (i = 0; i < (SIZE); i++)                                  \
        !          1848:            {                                                           \
        !          1849:              register int c = (P)[i];                                  \
        !          1850:              if (i != 0 && (i / 200) * 200 == i)                       \
        !          1851:                fprintf ((FILE), "\"\n\t.ascii \"");                    \
        !          1852:              if (c == '\"' || c == '\\')                               \
        !          1853:                putc ('\\', (FILE));                                    \
        !          1854:              if (c >= ' ' && c < 0177)                                 \
        !          1855:                putc (c, (FILE));                                       \
        !          1856:              else                                                      \
        !          1857:                {                                                       \
        !          1858:                  fprintf ((FILE), "\\%o", c);                          \
        !          1859:                  /* After an octal-escape, if a digit follows,         \
        !          1860:                     terminate one string constant and start another.   \
        !          1861:                     The Vax assembler fails to stop reading the escape \
        !          1862:                     after three digits, so this is the only way we     \
        !          1863:                     can get it to parse the data properly.  */         \
        !          1864:                  if (i < (SIZE) - 1 && (P)[i + 1] >= '0' && (P)[i + 1] <= '9')\
        !          1865:                    fprintf ((FILE), "\"\n\t.ascii \"");                \
        !          1866:                }                                                       \
        !          1867:            }                                                           \
        !          1868:          fprintf ((FILE), "\"\n");                                     \
        !          1869:  }
        !          1870: 
        !          1871: 
        !          1872: 
        !          1873: /* Define the parentheses used to group arithmetic operations
        !          1874:    in assembler code.  */
        !          1875: 
        !          1876: #define ASM_OPEN_PAREN "("
        !          1877: #define ASM_CLOSE_PAREN ")"
        !          1878: 
        !          1879: /* Specify what to precede various sizes of constant with
        !          1880:    in the output file.  */
        !          1881: 
        !          1882: #define ASM_INT_OP ".word "
        !          1883: #define ASM_SHORT_OP ".half "
        !          1884: #define ASM_CHAR_OP ".byte "
        !          1885: 
        !          1886: 
        !          1887: #define DEBUG_LOG_INSN(X)  {                                           \
        !          1888:             extern rtx al_log_insn_debug;                              \
        !          1889:             al_log_insn_debug=(X); }

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