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Annotation of GNUtools/cc/config/pa/fsf-pa.h, revision 1.1

1.1     ! root        1: /* Definitions of target machine for GNU compiler, for the HP Spectrum.
        !             2:    Copyright (C) 1992, 1993 Free Software Foundation, Inc.
        !             3:    Contributed by Michael Tiemann ([email protected])
        !             4:    and Tim Moore ([email protected]) of the Center for
        !             5:    Software Science at the University of Utah.
        !             6: 
        !             7: This file is part of GNU CC.
        !             8: 
        !             9: GNU CC is free software; you can redistribute it and/or modify
        !            10: it under the terms of the GNU General Public License as published by
        !            11: the Free Software Foundation; either version 1, or (at your option)
        !            12: any later version.
        !            13: 
        !            14: GNU CC is distributed in the hope that it will be useful,
        !            15: but WITHOUT ANY WARRANTY; without even the implied warranty of
        !            16: MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
        !            17: GNU General Public License for more details.
        !            18: 
        !            19: You should have received a copy of the GNU General Public License
        !            20: along with GNU CC; see the file COPYING.  If not, write to
        !            21: the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */
        !            22: 
        !            23: enum cmp_type                          /* comparison type */
        !            24: {
        !            25:   CMP_SI,                              /* compare integers */
        !            26:   CMP_SF,                              /* compare single precision floats */
        !            27:   CMP_DF,                              /* compare double precision floats */
        !            28:   CMP_MAX                              /* max comparison type */
        !            29: };
        !            30: 
        !            31: /* Print subsidiary information on the compiler version in use.  */
        !            32: 
        !            33: #define TARGET_VERSION fprintf (stderr, " (hppa)");
        !            34: 
        !            35: /* Run-time compilation parameters selecting different hardware subsets.  */
        !            36: 
        !            37: extern int target_flags;
        !            38: 
        !            39: /* compile code for HP-PA 1.1 ("Snake") */
        !            40: 
        !            41: #define TARGET_SNAKE (target_flags & 1)
        !            42: 
        !            43: /* Disable all FP registers (they all become fixed).  This may be necessary
        !            44:    for compiling kernels which perform lazy context switching of FP regs.
        !            45:    Note if you use this option and try to perform floating point operations
        !            46:    the compiler will abort!  */
        !            47: 
        !            48: #define TARGET_DISABLE_FPREGS (target_flags & 2)
        !            49: 
        !            50: /* Allow unconditional jumps in the delay slots of call instructions.  */
        !            51: #define TARGET_JUMP_IN_DELAY (target_flags & 8)
        !            52: 
        !            53: /* Force all function calls to indirect addressing via a register.  This
        !            54:    avoids lossage when the function is very far away from the current PC.
        !            55: 
        !            56:    ??? What about simple jumps, they can suffer from the same problem.
        !            57:    Would require significant surgery in pa.md.  */
        !            58: 
        !            59: #define TARGET_LONG_CALLS (target_flags & 16)
        !            60: 
        !            61: /* Disable indexed addressing modes.  */
        !            62: 
        !            63: #define TARGET_DISABLE_INDEXING (target_flags & 32)
        !            64: 
        !            65: /* Emit code which follows the new portable runtime calling conventions
        !            66:    HP wants everyone to use for ELF objects.  If at all possible you want
        !            67:    to avoid this since it's a performance loss for non-prototyped code.  */
        !            68: 
        !            69: #define TARGET_PORTABLE_RUNTIME (target_flags & 64)
        !            70: 
        !            71: /* Emit directives only understood by GAS.  This allows parameter
        !            72:    relocations to work for static functions.  There is no way
        !            73:    to make them work the HP assembler at this time.  */
        !            74: 
        !            75: #define TARGET_GAS (target_flags & 128)
        !            76: 
        !            77: /* Macro to define tables used to set the flags.
        !            78:    This is a list in braces of pairs in braces,
        !            79:    each pair being { "NAME", VALUE }
        !            80:    where VALUE is the bits to set or minus the bits to clear.
        !            81:    An empty string NAME is used to identify the default VALUE.  */
        !            82: 
        !            83: #define TARGET_SWITCHES \
        !            84:   {{"snake", 1},               \
        !            85:    {"nosnake", -1},            \
        !            86:    {"pa-risc-1-0", -1},                \
        !            87:    {"pa-risc-1-1", 1},         \
        !            88:    {"disable-fpregs", 2},      \
        !            89:    {"no-disable-fpregs", 2},   \
        !            90:    {"jump-in-delay", 8},       \
        !            91:    {"no-jump-in-delay", -8},   \
        !            92:    {"long-calls", 16},         \
        !            93:    {"no-long-calls", -16},     \
        !            94:    {"disable-indexing", 32},   \
        !            95:    {"no-disable-indexing", -32},\
        !            96:    {"portable-runtime", 64},   \
        !            97:    {"no-portable-runtime", -64},\
        !            98:    {"gas", 128},               \
        !            99:    {"no-gas", -128},           \
        !           100:    { "", TARGET_DEFAULT}}
        !           101: 
        !           102: #ifndef TARGET_DEFAULT
        !           103: #define TARGET_DEFAULT 0x88            /* TARGET_GAS + TARGET_JUMP_IN_DELAY */
        !           104: #endif
        !           105: 
        !           106: #define DBX_DEBUGGING_INFO
        !           107: #define DEFAULT_GDB_EXTENSIONS 1
        !           108: 
        !           109: /* This is the way other stabs-in-XXX tools do things.  We will be
        !           110:    compatable.  */
        !           111: #define DBX_BLOCKS_FUNCTION_RELATIVE 1
        !           112: 
        !           113: /* Likewise for linenos. 
        !           114: 
        !           115:    We make the first line stab special to avoid adding several
        !           116:    gross hacks to GAS.  */
        !           117: #undef  ASM_OUTPUT_SOURCE_LINE
        !           118: #define ASM_OUTPUT_SOURCE_LINE(file, line)             \
        !           119:   { static int sym_lineno = 1;                         \
        !           120:     static tree last_function_decl = NULL;             \
        !           121:     if (current_function_decl == last_function_decl)   \
        !           122:       fprintf (file, "\t.stabn 68,0,%d,L$M%d-%s\nL$M%d:\n",    \
        !           123:               line, sym_lineno,                        \
        !           124:               XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0) + 1, \
        !           125:               sym_lineno);                             \
        !           126:     else                                               \
        !           127:       fprintf (file, "\t.stabn 68,0,%d,0\n", line);    \
        !           128:     last_function_decl = current_function_decl;                \
        !           129:     sym_lineno += 1; }
        !           130: 
        !           131: /* But, to make this work, we have to output the stabs for the function
        !           132:    name *first*...  */
        !           133: #define DBX_FUNCTION_FIRST
        !           134: 
        !           135: /* Only lables should ever begin in colunm zero.  */
        !           136: #define ASM_STABS_OP "\t.stabs"
        !           137: #define ASM_STABN_OP "\t.stabn"
        !           138: 
        !           139: #if (TARGET_DEFAULT & 1) == 0
        !           140: #define CPP_SPEC "%{msnake:-D__hp9000s700 -D_PA_RISC1_1}\
        !           141:  %{mpa-risc-1-1:-D__hp9000s700 -D_PA_RISC1_1}"
        !           142: #else
        !           143: #define CPP_SPEC "%{!mpa-risc-1-0:%{!mnosnake:-D__hp9000s700 -D_PA_RISC1_1}}"
        !           144: #endif
        !           145: 
        !           146: /* Defines for a K&R CC */
        !           147: 
        !           148: #define CC1_SPEC "%{pg:} %{p:}"
        !           149: 
        !           150: #define LINK_SPEC "-u main"
        !           151: 
        !           152: /* Allow $ in identifiers.  */
        !           153: #define DOLLARS_IN_IDENTIFIERS 2
        !           154: 
        !           155: /* Make gcc agree with <machine/ansi.h> */
        !           156: 
        !           157: #define SIZE_TYPE "unsigned int"
        !           158: #define PTRDIFF_TYPE "int"
        !           159: #define WCHAR_TYPE "unsigned int"
        !           160: #define WCHAR_TYPE_SIZE 32
        !           161: 
        !           162: /* Sometimes certain combinations of command options do not make sense
        !           163:    on a particular target machine.  You can define a macro
        !           164:    `OVERRIDE_OPTIONS' to take account of this.  This macro, if
        !           165:    defined, is executed once just after all the command options have
        !           166:    been parsed.
        !           167: 
        !           168:    On the PA, it is used to explicitly warn the user that -fpic and -fPIC
        !           169:    do not work.  */
        !           170: 
        !           171: #define OVERRIDE_OPTIONS \
        !           172: {                                                              \
        !           173:   if (flag_pic != 0)                                           \
        !           174:     warning ("-fpic and -fPIC are not supported on the PA.");  \
        !           175: }
        !           176: 
        !           177: /* Show we can debug even without a frame pointer.  */
        !           178: #define CAN_DEBUG_WITHOUT_FP
        !           179: 
        !           180: /* Names to predefine in the preprocessor for this target machine.  */
        !           181: 
        !           182: #define CPP_PREDEFINES "-Dhppa -Dhp9000s800 -D__hp9000s800 -Dhp9k8 -Dunix -D_HPUX_SOURCE -Dhp9000 -Dhp800 -Dspectrum -DREVARGV -Asystem(unix) -Asystem(bsd) -Acpu(hppa) -Amachine(hppa)"
        !           183: 
        !           184: /* target machine storage layout */
        !           185: 
        !           186: /* Define this if most significant bit is lowest numbered
        !           187:    in instructions that operate on numbered bit-fields.  */
        !           188: #define BITS_BIG_ENDIAN 1
        !           189: 
        !           190: /* Define this if most significant byte of a word is the lowest numbered.  */
        !           191: /* That is true on the HP-PA.  */
        !           192: #define BYTES_BIG_ENDIAN 1
        !           193: 
        !           194: /* Define this if most significant word of a multiword number is lowest
        !           195:    numbered.  */
        !           196: /* For the HP-PA we can decide arbitrarily
        !           197:    since there are no machine instructions for them.  */
        !           198: #define WORDS_BIG_ENDIAN 1
        !           199: 
        !           200: /* number of bits in an addressable storage unit */
        !           201: #define BITS_PER_UNIT 8
        !           202: 
        !           203: /* Width in bits of a "word", which is the contents of a machine register.
        !           204:    Note that this is not necessarily the width of data type `int';
        !           205:    if using 16-bit ints on a 68000, this would still be 32.
        !           206:    But on a machine with 16-bit registers, this would be 16.  */
        !           207: #define BITS_PER_WORD 32
        !           208: 
        !           209: /* Width of a word, in units (bytes).  */
        !           210: #define UNITS_PER_WORD 4
        !           211: 
        !           212: /* Width in bits of a pointer.
        !           213:    See also the macro `Pmode' defined below.  */
        !           214: #define POINTER_SIZE 32
        !           215: 
        !           216: /* Allocation boundary (in *bits*) for storing arguments in argument list.  */
        !           217: #define PARM_BOUNDARY 32
        !           218: 
        !           219: /* Largest alignment required for any stack parameter, in bits.
        !           220:    Don't define this if it is equal to PARM_BOUNDARY */
        !           221: #define MAX_PARM_BOUNDARY 64
        !           222: 
        !           223: /* Boundary (in *bits*) on which stack pointer should be aligned.  */
        !           224: #define STACK_BOUNDARY 512
        !           225: 
        !           226: /* Allocation boundary (in *bits*) for the code of a function.  */
        !           227: #define FUNCTION_BOUNDARY 32
        !           228: 
        !           229: /* Alignment of field after `int : 0' in a structure.  */
        !           230: #define EMPTY_FIELD_BOUNDARY 32
        !           231: 
        !           232: /* Every structure's size must be a multiple of this.  */
        !           233: #define STRUCTURE_SIZE_BOUNDARY 8
        !           234: 
        !           235: /* A bitfield declared as `int' forces `int' alignment for the struct.  */
        !           236: #define PCC_BITFIELD_TYPE_MATTERS 1
        !           237: 
        !           238: /* No data type wants to be aligned rounder than this.  */
        !           239: #define BIGGEST_ALIGNMENT 64
        !           240: 
        !           241: /* The .align directive in the HP assembler allows up to a 32 alignment.  */
        !           242: #define MAX_OFILE_ALIGNMENT 32768
        !           243: 
        !           244: /* Get around hp-ux assembler bug, and make strcpy of constants fast. */
        !           245: #define CONSTANT_ALIGNMENT(CODE, TYPEALIGN) \
        !           246:   ((TYPEALIGN) < 32 ? 32 : (TYPEALIGN))
        !           247: 
        !           248: /* Make arrays of chars word-aligned for the same reasons.  */
        !           249: #define DATA_ALIGNMENT(TYPE, ALIGN)            \
        !           250:   (TREE_CODE (TYPE) == ARRAY_TYPE              \
        !           251:    && TYPE_MODE (TREE_TYPE (TYPE)) == QImode   \
        !           252:    && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))
        !           253: 
        !           254: 
        !           255: /* Set this nonzero if move instructions will actually fail to work
        !           256:    when given unaligned data.  */
        !           257: #define STRICT_ALIGNMENT 1
        !           258: 
        !           259: /* Generate calls to memcpy, memcmp and memset.  */
        !           260: #define TARGET_MEM_FUNCTIONS
        !           261: 
        !           262: /* Standard register usage.  */
        !           263: 
        !           264: /* Number of actual hardware registers.
        !           265:    The hardware registers are assigned numbers for the compiler
        !           266:    from 0 to just below FIRST_PSEUDO_REGISTER.
        !           267:    All registers that the compiler knows about must be given numbers,
        !           268:    even those that are not normally considered general registers.
        !           269: 
        !           270:    HP-PA 1.0 has 32 fullword registers and 16 floating point
        !           271:    registers. The floating point registers hold either word or double
        !           272:    word values.
        !           273: 
        !           274:    16 additional registers are reserved.
        !           275: 
        !           276:    HP-PA 1.1 has 32 fullword registers and 32 floating point
        !           277:    registers. However, the floating point registers behave
        !           278:    differently: the left and right halves of registers are addressable
        !           279:    as 32 bit registers. So, we will set things up like the 68k which
        !           280:    has different fp units: define separate register sets for the 1.0
        !           281:    and 1.1 fp units. */
        !           282: 
        !           283: #define FIRST_PSEUDO_REGISTER 101  /* 32 + 12 1.0 regs + 56 1.1 regs + */
        !           284:                                   /* 1 shift reg */
        !           285: 
        !           286: /* 1 for registers that have pervasive standard uses
        !           287:    and are not available for the register allocator.
        !           288: 
        !           289:    On the HP-PA, these are:
        !           290:    Reg 0       = 0 (hardware). However, 0 is used for condition code,
        !           291:                   so is not fixed.
        !           292:    Reg 1       = ADDIL target/Temporary (hardware).
        !           293:    Reg 2       = Return Pointer
        !           294:    Reg 3       = Frame Pointer
        !           295:    Reg 4       = Frame Pointer (>8k varying frame with HP compilers only)
        !           296:    Reg 4-18    = Preserved Registers
        !           297:    Reg 19      = Linkage Table Register in HPUX 8.0 shared library scheme.
        !           298:    Reg 20-22   = Temporary Registers
        !           299:    Reg 23-26   = Temporary/Parameter Registers
        !           300:    Reg 27      = Global Data Pointer (hp)
        !           301:    Reg 28      = Temporary/???/Return Value register
        !           302:    Reg 29      = Temporary/Static Chain/Return Value register
        !           303:    Reg 30      = stack pointer
        !           304:    Reg 31      = Temporary/Millicode Return Pointer (hp)
        !           305: 
        !           306:    Freg 0-3    = Status Registers       -- Not known to the compiler.
        !           307:    Freg 4-7    = Arguments/Return Value
        !           308:    Freg 8-11   = Temporary Registers
        !           309:    Freg 12-15  = Preserved Registers
        !           310: 
        !           311:    Freg 16-31  = Reserved
        !           312: 
        !           313:    On the Snake, fp regs are
        !           314: 
        !           315:    Freg 0-3    = Status Registers      -- Not known to the compiler.
        !           316:    Freg 4L-7R  = Arguments/Return Value
        !           317:    Freg 8L-11R = Temporary Registers
        !           318:    Freg 12L-21R        = Preserved Registers
        !           319:    Freg 22L-31R = Temporary Registers
        !           320: 
        !           321: */
        !           322: 
        !           323: #define FIXED_REGISTERS  \
        !           324:  {0, 0, 0, 0, 0, 0, 0, 0, \
        !           325:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           326:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           327:   0, 0, 0, 1, 0, 0, 1, 0, \
        !           328:   /* 1.0 fp registers */ \
        !           329:   0, 0, 0, 0, \
        !           330:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           331:   /* 1.1 fp registers */ \
        !           332:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           333:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           334:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           335:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           336:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           337:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           338:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           339:   0}
        !           340: 
        !           341: /* 1 for registers not available across function calls.
        !           342:    These must include the FIXED_REGISTERS and also any
        !           343:    registers that can be used without being saved.
        !           344:    The latter must include the registers where values are returned
        !           345:    and the register where structure-value addresses are passed.
        !           346:    Aside from that, you can include as many other registers as you like.  */
        !           347: #define CALL_USED_REGISTERS  \
        !           348:  {1, 1, 1, 0, 0, 0, 0, 0, \
        !           349:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           350:   0, 0, 0, 1, 1, 1, 1, 1, \
        !           351:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           352:   /* 1.0 fp registers */ \
        !           353:   1, 1, 1, 1, \
        !           354:   1, 1, 1, 1, 0, 0, 0, 0, \
        !           355:   /* 1.1 fp registers */ \
        !           356:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           357:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           358:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           359:   0, 0, 0, 0, 0, 0, 0, 0, \
        !           360:   0, 0, 0, 0, 1, 1, 1, 1, \
        !           361:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           362:   1, 1, 1, 1, 1, 1, 1, 1, \
        !           363:   1}
        !           364: 
        !           365: /* Make sure everything's fine if we *don't* have a given processor.
        !           366:    This assumes that putting a register in fixed_regs will keep the
        !           367:    compiler's mitts completely off it.  We don't bother to zero it out
        !           368:    of register classes.   */
        !           369: 
        !           370: #define CONDITIONAL_REGISTER_USAGE \
        !           371: {                                              \
        !           372:   int i;                                       \
        !           373:   HARD_REG_SET x;                              \
        !           374:   if (!TARGET_SNAKE)                           \
        !           375:     {                                          \
        !           376:       COPY_HARD_REG_SET (x, reg_class_contents[(int)SNAKE_FP_REGS]);\
        !           377:       for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \
        !           378:        if (TEST_HARD_REG_BIT (x, i))           \
        !           379:        fixed_regs[i] = call_used_regs[i] = 1;  \
        !           380:     }                                          \
        !           381:   else if (TARGET_DISABLE_FPREGS)              \
        !           382:     {                                          \
        !           383:       COPY_HARD_REG_SET (x, reg_class_contents[(int)FP_REGS]);\
        !           384:       for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \
        !           385:        if (TEST_HARD_REG_BIT (x, i))           \
        !           386:        fixed_regs[i] = call_used_regs[i] = 1;  \
        !           387:       COPY_HARD_REG_SET (x, reg_class_contents[(int)SNAKE_FP_REGS]);\
        !           388:       for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \
        !           389:        if (TEST_HARD_REG_BIT (x, i))           \
        !           390:        fixed_regs[i] = call_used_regs[i] = 1;  \
        !           391:     }                                          \
        !           392:   else                                         \
        !           393:     {                                          \
        !           394:       COPY_HARD_REG_SET (x, reg_class_contents[(int)FP_REGS]); \
        !           395:       for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \
        !           396:        if (TEST_HARD_REG_BIT (x, i))           \
        !           397:        fixed_regs[i] = call_used_regs[i] = 1;  \
        !           398:     }                                          \
        !           399:   /* This makes cse think PIC_OFFSET_TABLE_REGNUM is not clobbered
        !           400:      in calls.                                 \
        !           401:   if (flag_pic)                                        \
        !           402:     fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1; */        \
        !           403: }
        !           404: 
        !           405: /* Allocated the call used registers first.  This should minimize
        !           406:    the number of registers that need to be saved (as call used
        !           407:    registers will generally not be allocated across a call).
        !           408: 
        !           409:    Experimentation has shown slightly better results by allocating
        !           410:    FP registers first.  */
        !           411: 
        !           412: #define REG_ALLOC_ORDER \
        !           413:   /* 1.0 caller-saved fp regs.  */     \
        !           414:  {36, 37, 38, 39, 32, 33, 34, 35,      \
        !           415:   /* 1.1 caller-saved fp regs.  */     \
        !           416:   52, 53, 54, 55, 56, 57, 58, 59,      \
        !           417:   80, 81, 82, 83, 84, 85, 86, 87,      \
        !           418:   88, 89, 90, 91, 92, 93, 94, 95,      \
        !           419:   96, 97, 98, 99,                      \
        !           420:   44, 45, 46, 47, 48, 49, 50, 51,      \
        !           421:   /* caller-saved general regs.  */    \
        !           422:   19, 20, 21, 22, 23, 24, 25, 26,      \
        !           423:   27, 28, 29, 31,  2,                  \
        !           424:   /* 1.0 callee-saved fp regs.  */     \
        !           425:   40, 41, 42, 43,                      \
        !           426:   /* 1.1 callee-saved fp regs.  */     \
        !           427:   60, 61, 62, 63, 64, 65, 66, 67,      \
        !           428:   68, 69, 70, 71, 72, 73, 74, 75,      \
        !           429:   76, 77, 78, 79,                      \
        !           430:   /* callee-saved general regs.  */    \
        !           431:    3,  4,  5,  6,  7,  8,  9, 10,      \
        !           432:   11, 12, 13, 14, 15, 16, 17, 18,      \
        !           433:   /* special registers.  */            \
        !           434:    1, 30,  0, 100}
        !           435: 
        !           436: 
        !           437: /* Return number of consecutive hard regs needed starting at reg REGNO
        !           438:    to hold something of mode MODE.
        !           439:    This is ordinarily the length in words of a value of mode MODE
        !           440:    but can be less for certain modes in special long registers.
        !           441: 
        !           442:    On the HP-PA, ordinary registers hold 32 bits worth;
        !           443:    The floating point registers are 64 bits wide. Snake fp regs are 32
        !           444:    bits wide */
        !           445: #define HARD_REGNO_NREGS(REGNO, MODE)   \
        !           446:   (((REGNO) < 32 || (REGNO) >= 44)     \
        !           447:    ? ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) : 1)
        !           448: 
        !           449: /* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
        !           450:    On the HP-PA, the cpu registers can hold any mode.  We
        !           451:    force this to be an even register is it cannot hold the full mode.  */
        !           452: #define HARD_REGNO_MODE_OK(REGNO, MODE) \
        !           453:   ((REGNO) == 0 ? (MODE) == CCmode || (MODE) == CCFPmode               \
        !           454:    : (REGNO) < 32 ? ((GET_MODE_SIZE (MODE) <= 4) ? 1 : ((REGNO) & 1) == 0)\
        !           455:    : (REGNO) < 44 ? (GET_MODE_SIZE (MODE) <= 4                         \
        !           456:                     || (GET_MODE_SIZE (MODE) > 4                       \
        !           457:                         && GET_MODE_CLASS (MODE) == MODE_FLOAT))       \
        !           458:    : (GET_MODE_SIZE (MODE) > 4 ? ((REGNO) & 1) == 0                    \
        !           459:       : 1))
        !           460: 
        !           461: /* Value is 1 if it is a good idea to tie two pseudo registers
        !           462:    when one has mode MODE1 and one has mode MODE2.
        !           463:    If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
        !           464:    for any hard reg, then this must be 0 for correct output.  */
        !           465: #define MODES_TIEABLE_P(MODE1, MODE2) \
        !           466:   (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2))
        !           467: 
        !           468: /* Specify the registers used for certain standard purposes.
        !           469:    The values of these macros are register numbers.  */
        !           470: 
        !           471: /* The HP-PA pc isn't overloaded on a register that the compiler knows about.  */
        !           472: /* #define PC_REGNUM  */
        !           473: 
        !           474: /* Register to use for pushing function arguments.  */
        !           475: #define STACK_POINTER_REGNUM 30
        !           476: 
        !           477: /* Base register for access to local variables of the function.  */
        !           478: #define FRAME_POINTER_REGNUM 3
        !           479: 
        !           480: /* Value should be nonzero if functions must have frame pointers. */
        !           481: #define FRAME_POINTER_REQUIRED (current_function_calls_alloca)
        !           482: 
        !           483: 
        !           484: /* C statement to store the difference between the frame pointer
        !           485:    and the stack pointer values immediately after the function prologue.
        !           486: 
        !           487:    Note, we always pretend that this is a leaf function because if
        !           488:    it's not, there's no point in trying to eliminate the
        !           489:    frame pointer.  If it is a leaf function, we guessed right!  */
        !           490: #define INITIAL_FRAME_POINTER_OFFSET(VAR) \
        !           491:   do {(VAR) = - compute_frame_size (get_frame_size (), 0);} while (0)
        !           492: 
        !           493: /* Base register for access to arguments of the function.  */
        !           494: #define ARG_POINTER_REGNUM 3
        !           495: 
        !           496: /* Register in which static-chain is passed to a function.  */
        !           497: /* ??? */
        !           498: #define STATIC_CHAIN_REGNUM 29
        !           499: 
        !           500: /* Register which holds offset table for position-independent
        !           501:    data references.  */
        !           502: 
        !           503: #define PIC_OFFSET_TABLE_REGNUM 19
        !           504: 
        !           505: #define FINALIZE_PIC finalize_pic ()
        !           506: 
        !           507: /* SOM ABI says that objects larger than 64 bits are returned in memory.  */
        !           508: #define RETURN_IN_MEMORY(TYPE) \
        !           509:   (TYPE_MODE (TYPE) == BLKmode || int_size_in_bytes (TYPE) > 8)
        !           510: 
        !           511: /* Register in which address to store a structure value
        !           512:    is passed to a function.  */
        !           513: #define STRUCT_VALUE_REGNUM 28
        !           514: 
        !           515: /* Define the classes of registers for register constraints in the
        !           516:    machine description.  Also define ranges of constants.
        !           517: 
        !           518:    One of the classes must always be named ALL_REGS and include all hard regs.
        !           519:    If there is more than one class, another class must be named NO_REGS
        !           520:    and contain no registers.
        !           521: 
        !           522:    The name GENERAL_REGS must be the name of a class (or an alias for
        !           523:    another name such as ALL_REGS).  This is the class of registers
        !           524:    that is allowed by "g" or "r" in a register constraint.
        !           525:    Also, registers outside this class are allocated only when
        !           526:    instructions express preferences for them.
        !           527: 
        !           528:    The classes must be numbered in nondecreasing order; that is,
        !           529:    a larger-numbered class must never be contained completely
        !           530:    in a smaller-numbered class.
        !           531: 
        !           532:    For any two classes, it is very desirable that there be another
        !           533:    class that represents their union.  */
        !           534: 
        !           535:   /* The HP-PA has four kinds of registers: general regs, 1.0 fp regs,
        !           536:      1.1 fp regs, and the high 1.1 fp regs, to which the operands of
        !           537:      fmpyadd and fmpysub are restricted.
        !           538: 
        !           539:      FP_OR_SNAKE_FP_REGS is for reload_{in,out}di only and isn't used
        !           540:      anywhere else.  */
        !           541: 
        !           542: enum reg_class { NO_REGS, R1_REGS, GENERAL_REGS, FP_REGS, GENERAL_OR_FP_REGS,
        !           543:   HI_SNAKE_FP_REGS, SNAKE_FP_REGS, GENERAL_OR_SNAKE_FP_REGS,
        !           544:   FP_OR_SNAKE_FP_REGS, NON_SHIFT_REGS, SHIFT_REGS, ALL_REGS, LIM_REG_CLASSES};
        !           545: 
        !           546: #define N_REG_CLASSES (int) LIM_REG_CLASSES
        !           547: 
        !           548: /* Give names of register classes as strings for dump file.   */
        !           549: 
        !           550: #define REG_CLASS_NAMES \
        !           551:   { "NO_REGS", "R1_REGS", "GENERAL_REGS", "FP_REGS", "GENERAL_OR_FP_REGS",\
        !           552:     "HI_SNAKE_FP_REGS", "SNAKE_FP_REGS", "GENERAL_OR_SNAKE_FP_REGS",\
        !           553:     "FP_OR_SNAKE_FP_REGS", "NON_SHIFT_REGS", "SHIFT_REGS", "ALL_REGS"}
        !           554: 
        !           555: /* Define which registers fit in which classes.
        !           556:    This is an initializer for a vector of HARD_REG_SET
        !           557:    of length N_REG_CLASSES. Register 0, the "condition code" register,
        !           558:    is in no class. */
        !           559: 
        !           560: #define REG_CLASS_CONTENTS     \
        !           561: { {0, 0, 0, 0},                        /* NO_REGS */           \
        !           562:   {0x2, 0, 0, 0},              /* R1_REGS */           \
        !           563:   {-2, 0, 0, 0},               /* GENERAL_REGS */      \
        !           564:   {0, 0xfff, 0, 0},            /* FP_REGS */           \
        !           565:   {-2, 0xfff, 0, 0},           /* GENERAL_OR_FP_REGS */\
        !           566:   {0, 0, 0xfffffff0, 0xf},     /* HI_SNAKE_FP_REGS */  \
        !           567:   {0, 0xfffff000, ~0, 0xf},    /* SNAKE_FP_REGS */     \
        !           568:   {-2, 0xfffff000, ~0, 0xf},   /* GENERAL_OR_SNAKE_FP_REGS */\
        !           569:   {0, ~0, ~0, 0xf},            /* FP_OR_SNAKE_FP_REGS */\
        !           570:   {-2, ~0, ~0, ~0x10},         /* NON_SHIFT_REGS */    \
        !           571:   {0, 0, 0, 0x10},             /* SHIFT_REGS */        \
        !           572:   {-2, ~0, ~0, 0x1f}}          /* ALL_REGS */
        !           573: 
        !           574: /* The same information, inverted:
        !           575:    Return the class number of the smallest class containing
        !           576:    reg number REGNO.  This could be a conditional expression
        !           577:    or could index an array.  */
        !           578: 
        !           579: #define REGNO_REG_CLASS(REGNO)         \
        !           580:   ((REGNO) == 0 ? NO_REGS              \
        !           581:    : (REGNO) == 1 ? R1_REGS            \
        !           582:    : (REGNO) < 32 ? GENERAL_REGS       \
        !           583:    : (REGNO) < 44 ? FP_REGS            \
        !           584:    : (REGNO) < 68 ? SNAKE_FP_REGS      \
        !           585:    : (REGNO) < 100 ? HI_SNAKE_FP_REGS  \
        !           586:    : SHIFT_REGS)
        !           587: 
        !           588: /* The class value for index registers, and the one for base regs.  */
        !           589: #define INDEX_REG_CLASS GENERAL_REGS
        !           590: #define BASE_REG_CLASS GENERAL_REGS
        !           591: 
        !           592: #define FP_REG_CLASS_P(CLASS) \
        !           593:   (CLASS == FP_REGS || CLASS == SNAKE_FP_REGS || CLASS == HI_SNAKE_FP_REGS)
        !           594: 
        !           595: /* Get reg_class from a letter such as appears in the machine description.
        !           596:    Note 'Z' is not the same as 'r' since SHIFT_REGS is not part of
        !           597:    GENERAL_REGS.  */
        !           598: 
        !           599: #define REG_CLASS_FROM_LETTER(C) \
        !           600:   ((C) == 'f' ? (!TARGET_SNAKE ? FP_REGS : NO_REGS) :          \
        !           601:    ((C) == 'x' ? (TARGET_SNAKE ? SNAKE_FP_REGS : NO_REGS) :    \
        !           602:     ((C) == 'y' ? (TARGET_SNAKE ? HI_SNAKE_FP_REGS : NO_REGS) :        \
        !           603:      ((C) == 'q' ? SHIFT_REGS :                                        \
        !           604:       ((C) == 'a' ? R1_REGS :                                  \
        !           605:        ((C) == 'z' ? FP_OR_SNAKE_FP_REGS :                     \
        !           606:         ((C) == 'Z' ? ALL_REGS : NO_REGS)))))))
        !           607: 
        !           608: /* The letters I, J, K, L and M in a register constraint string
        !           609:    can be used to stand for particular ranges of immediate operands.
        !           610:    This macro defines what the ranges are.
        !           611:    C is the letter, and VALUE is a constant value.
        !           612:    Return 1 if VALUE is in the range specified by C.
        !           613: 
        !           614:    `I' is used for the 11 bit constants.
        !           615:    `J' is used for the 14 bit constants.
        !           616:    `K' is used for values that can be moved with a zdepi insn.
        !           617:    `L' is used for the 5 bit constants.
        !           618:    `M' is used for 0.
        !           619:    `N' is used for values with the least significant 11 bits equal to zero.
        !           620:    `O' is used for numbers n such that n+1 is a power of 2.
        !           621:    */
        !           622: 
        !           623: #define CONST_OK_FOR_LETTER_P(VALUE, C)  \
        !           624:   ((C) == 'I' ? VAL_11_BITS_P (VALUE)                          \
        !           625:    : (C) == 'J' ? VAL_14_BITS_P (VALUE)                                \
        !           626:    : (C) == 'K' ? zdepi_cint_p (VALUE)                         \
        !           627:    : (C) == 'L' ? VAL_5_BITS_P (VALUE)                         \
        !           628:    : (C) == 'M' ? (VALUE) == 0                                 \
        !           629:    : (C) == 'N' ? ((VALUE) & 0x7ff) == 0                       \
        !           630:    : (C) == 'O' ? (((VALUE) & ((VALUE) + 1)) == 0)             \
        !           631:    : (C) == 'P' ? and_mask_p (VALUE)                           \
        !           632:    : 0)
        !           633: 
        !           634: /* Similar, but for floating or large integer constants, and defining letters
        !           635:    G and H.   Here VALUE is the CONST_DOUBLE rtx itself.
        !           636: 
        !           637:    For PA, `G' is the floating-point constant zero.  `H' is undefined.  */
        !           638: 
        !           639: #define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C)                         \
        !           640:   ((C) == 'G' ? (GET_MODE_CLASS (GET_MODE (VALUE)) == MODE_FLOAT       \
        !           641:                 && (VALUE) == CONST0_RTX (GET_MODE (VALUE)))           \
        !           642:    : 0)
        !           643: 
        !           644: /* Given an rtx X being reloaded into a reg required to be
        !           645:    in class CLASS, return the class of reg to actually use.
        !           646:    In general this is just CLASS; but on some machines
        !           647:    in some cases it is preferable to use a more restrictive class.  */
        !           648: #define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS)
        !           649: 
        !           650: /* Return the register class of a scratch register needed to copy IN into
        !           651:    or out of a register in CLASS in MODE.  If it can be done directly,
        !           652:    NO_REGS is returned.  */
        !           653: 
        !           654: #define SECONDARY_RELOAD_CLASS(CLASS,MODE,IN) \
        !           655:   secondary_reload_class (CLASS, MODE, IN)
        !           656: 
        !           657: /* On the PA it is not possible to directly move data between
        !           658:    GENERAL_REGS and FP_REGS.  */
        !           659: #define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE)  \
        !           660:   ((FP_REG_CLASS_P (CLASS1) && ! FP_REG_CLASS_P (CLASS2))      \
        !           661:    || (! FP_REG_CLASS_P (CLASS1) && FP_REG_CLASS_P (CLASS2)))
        !           662: 
        !           663: /* Return the stack location to use for secondary memory needed reloads.  */
        !           664: #define SECONDARY_MEMORY_NEEDED_RTX(MODE) \
        !           665:   gen_rtx (MEM, MODE, gen_rtx (PLUS, Pmode, stack_pointer_rtx, GEN_INT (-16)))
        !           666: 
        !           667: /* Return the maximum number of consecutive registers
        !           668:    needed to represent mode MODE in a register of class CLASS.  */
        !           669: #define CLASS_MAX_NREGS(CLASS, MODE)   \
        !           670:   ((CLASS) == FP_REGS ? 1 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
        !           671: 
        !           672: /* Stack layout; function entry, exit and calling.  */
        !           673: 
        !           674: /* Define this if pushing a word on the stack
        !           675:    makes the stack pointer a smaller address.  */
        !           676: /* #define STACK_GROWS_DOWNWARD */
        !           677: 
        !           678: /* Believe it or not.  */
        !           679: #define ARGS_GROW_DOWNWARD
        !           680: 
        !           681: /* Define this if the nominal address of the stack frame
        !           682:    is at the high-address end of the local variables;
        !           683:    that is, each additional local variable allocated
        !           684:    goes at a more negative offset in the frame.  */
        !           685: /* #define FRAME_GROWS_DOWNWARD */
        !           686: 
        !           687: /* Offset within stack frame to start allocating local variables at.
        !           688:    If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
        !           689:    first local allocated.  Otherwise, it is the offset to the BEGINNING
        !           690:    of the first local allocated.  */
        !           691: #define STARTING_FRAME_OFFSET 8
        !           692: 
        !           693: /* If we generate an insn to push BYTES bytes,
        !           694:    this says how many the stack pointer really advances by.
        !           695:    On the HP-PA, don't define this because there are no push insns.  */
        !           696: /*  #define PUSH_ROUNDING(BYTES) */
        !           697: 
        !           698: /* Offset of first parameter from the argument pointer register value.
        !           699:    This value will be negated because the arguments grow down.
        !           700:    Also note that on STACK_GROWS_UPWARD machines (such as this one)
        !           701:    this is the distance from the frame pointer to the end of the first
        !           702:    argument, not it's beginning.  To get the real offset of the first
        !           703:    argument, the size of the argument must be added.
        !           704: 
        !           705:    ??? Have to check on this.*/
        !           706: 
        !           707: #define FIRST_PARM_OFFSET(FNDECL) -32
        !           708: 
        !           709: /* Absolute value of offset from top-of-stack address to location to store the
        !           710:    function parameter if it can't go in a register.
        !           711:    Addresses for following parameters are computed relative to this one.  */
        !           712: #define FIRST_PARM_CALLER_OFFSET(FNDECL) -32
        !           713: 
        !           714: 
        !           715: /* When a parameter is passed in a register, stack space is still
        !           716:    allocated for it.  */
        !           717: #define REG_PARM_STACK_SPACE(DECL) 16
        !           718: 
        !           719: /* Define this if the above stack space is to be considered part of the
        !           720:    space allocated by the caller.  */
        !           721: #define OUTGOING_REG_PARM_STACK_SPACE
        !           722: 
        !           723: /* Keep the stack pointer constant throughout the function.
        !           724:    This is both an optimization and a necessity: longjmp
        !           725:    doesn't behave itself when the stack pointer moves within
        !           726:    the function!  */
        !           727: #define ACCUMULATE_OUTGOING_ARGS
        !           728: 
        !           729: /* The weird HPPA calling conventions require a minimum of 48 bytes on
        !           730:    the stack: 16 bytes for register saves, and 32 bytes for magic.
        !           731:    This is the difference between the logical top of stack and the
        !           732:    actual sp. */
        !           733: #define STACK_POINTER_OFFSET -32
        !           734: 
        !           735: #define STACK_DYNAMIC_OFFSET(FNDECL)   \
        !           736:   ((STACK_POINTER_OFFSET) - current_function_outgoing_args_size)
        !           737: 
        !           738: /* Value is 1 if returning from a function call automatically
        !           739:    pops the arguments described by the number-of-args field in the call.
        !           740:    FUNTYPE is the data type of the function (as a tree),
        !           741:    or for a library call it is an identifier node for the subroutine name.  */
        !           742: 
        !           743: #define RETURN_POPS_ARGS(FUNTYPE,SIZE) 0
        !           744: 
        !           745: /* Define how to find the value returned by a function.
        !           746:    VALTYPE is the data type of the value (as a tree).
        !           747:    If the precise function being called is known, FUNC is its FUNCTION_DECL;
        !           748:    otherwise, FUNC is 0.  */
        !           749: 
        !           750: /* On the HP-PA the value is found in register(s) 28(-29), unless
        !           751:    the mode is SF or DF. Then the value is returned in fr4 (32, ) */
        !           752: 
        !           753: 
        !           754: #define FUNCTION_VALUE(VALTYPE, FUNC)  \
        !           755:   gen_rtx (REG, TYPE_MODE (VALTYPE), ((TYPE_MODE (VALTYPE) == SFmode ||        \
        !           756:                                       TYPE_MODE (VALTYPE) == DFmode) ? \
        !           757:                                      (TARGET_SNAKE ? 44 : 32) : 28))
        !           758: 
        !           759: /* Define how to find the value returned by a library function
        !           760:    assuming the value has mode MODE.  */
        !           761: 
        !           762: #define LIBCALL_VALUE(MODE) \
        !           763:   gen_rtx (REG, MODE, (MODE == SFmode || MODE == DFmode ?\
        !           764:                       (TARGET_SNAKE ? 44 : 32) : 28))
        !           765: 
        !           766: /* 1 if N is a possible register number for a function value
        !           767:    as seen by the caller.  */
        !           768: 
        !           769: #define FUNCTION_VALUE_REGNO_P(N) ((N) == 28 || (N) == (TARGET_SNAKE ? 44 : 32))
        !           770: 
        !           771: /* 1 if N is a possible register number for function argument passing.  */
        !           772: 
        !           773: #define FUNCTION_ARG_REGNO_P(N)                                \
        !           774:   (((N) >= 23 && (N) <= 26)                            \
        !           775:    || ((N) >= 32 && (N) <= 35 && ! TARGET_SNAKE)       \
        !           776:    || ((N) >= 44 && (N) <= 51 && TARGET_SNAKE))
        !           777: 
        !           778: /* Define a data type for recording info about an argument list
        !           779:    during the scan of that argument list.  This data type should
        !           780:    hold all necessary information about the function itself
        !           781:    and about the args processed so far, enough to enable macros
        !           782:    such as FUNCTION_ARG to determine where the next arg should go.
        !           783: 
        !           784:    On the HP-PA, this is a single integer, which is a number of words
        !           785:    of arguments scanned so far (including the invisible argument,
        !           786:    if any, which holds the structure-value-address).
        !           787:    Thus 4 or more means all following args should go on the stack.  */
        !           788: 
        !           789: struct hppa_args {int words, nargs_prototype; };
        !           790: 
        !           791: #define CUMULATIVE_ARGS struct hppa_args
        !           792: 
        !           793: /* Initialize a variable CUM of type CUMULATIVE_ARGS
        !           794:    for a call to a function whose data type is FNTYPE.
        !           795:    For a library call, FNTYPE is 0.  */
        !           796: 
        !           797: #define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) \
        !           798:   (CUM).words = 0,                                                     \
        !           799:   (CUM).nargs_prototype = (FNTYPE && TYPE_ARG_TYPES (FNTYPE)           \
        !           800:                           ? (list_length (TYPE_ARG_TYPES (FNTYPE)) - 1 \
        !           801:                              + (TYPE_MODE (TREE_TYPE (FNTYPE)) == BLKmode \
        !           802:                                 || RETURN_IN_MEMORY (TREE_TYPE (FNTYPE)))) \
        !           803:                           : 0)
        !           804: 
        !           805: 
        !           806: 
        !           807: /* Similar, but when scanning the definition of a procedure.  We always
        !           808:    set NARGS_PROTOTYPE large so we never return an EXPR_LIST.  */
        !           809: 
        !           810: #define INIT_CUMULATIVE_INCOMING_ARGS(CUM,FNTYPE,IGNORE) \
        !           811:   (CUM).words = 0,                             \
        !           812:   (CUM).nargs_prototype = 1000
        !           813: 
        !           814: /* Figure out the size in words of the function argument. */
        !           815: 
        !           816: #define FUNCTION_ARG_SIZE(MODE, TYPE)  \
        !           817:   ((((MODE) != BLKmode ? GET_MODE_SIZE (MODE) : int_size_in_bytes (TYPE))+3)/4)
        !           818: 
        !           819: /* Update the data in CUM to advance over an argument
        !           820:    of mode MODE and data type TYPE.
        !           821:    (TYPE is null for libcalls where that information may not be available.)  */
        !           822: 
        !           823: #define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)                   \
        !           824: { (CUM).nargs_prototype--;                                             \
        !           825:   ((((CUM).words & 01) && (TYPE) != 0                                  \
        !           826:     && FUNCTION_ARG_SIZE(MODE, TYPE) > 1)                              \
        !           827:    && (CUM).words++),                                                  \
        !           828:      (CUM).words += FUNCTION_ARG_SIZE(MODE, TYPE);                     \
        !           829: }
        !           830: 
        !           831: /* Determine where to put an argument to a function.
        !           832:    Value is zero to push the argument on the stack,
        !           833:    or a hard register in which to store the argument.
        !           834: 
        !           835:    MODE is the argument's machine mode.
        !           836:    TYPE is the data type of the argument (as a tree).
        !           837:     This is null for libcalls where that information may
        !           838:     not be available.
        !           839:    CUM is a variable of type CUMULATIVE_ARGS which gives info about
        !           840:     the preceding args and about the function being called.
        !           841:    NAMED is nonzero if this argument is a named parameter
        !           842:     (otherwise it is an extra parameter matching an ellipsis).
        !           843: 
        !           844:    On the HP-PA the first four words of args are normally in registers
        !           845:    and the rest are pushed.  But any arg that won't entirely fit in regs
        !           846:    is pushed.
        !           847: 
        !           848:    Arguments passed in registers are either 1 or 2 words long.
        !           849: 
        !           850:    The caller must make a distinction between calls to explicitly named
        !           851:    functions and calls through pointers to functions -- the conventions
        !           852:    are different!  Calls through pointers to functions only use general
        !           853:    registers for the first four argument words.
        !           854: 
        !           855:    Of course all this is different for the portable runtime model
        !           856:    HP wants everyone to use for ELF.  Ugh.  Here's a quick description
        !           857:    of how it's supposed to work.
        !           858: 
        !           859:    1) callee side remains unchanged.  It expects integer args to be
        !           860:    in the integer registers, float args in the float registers and
        !           861:    unnamed args in integer registers.
        !           862: 
        !           863:    2) caller side now depends on if the function being called has
        !           864:    a prototype in scope (rather than if it's being called indirectly).
        !           865: 
        !           866:       2a) If there is a prototype in scope, then arguments are passed
        !           867:       according to their type (ints in integer registers, floats in float
        !           868:       registers, unnamed args in integer registers.
        !           869: 
        !           870:       2b) If there is no prototype in scope, then floating point arguments
        !           871:       are passed in both integer and float registers.  egad.
        !           872: 
        !           873:   FYI: The portable parameter passing conventions are almost exactly like
        !           874:   the standard parameter passing conventions on the RS6000.  That's why
        !           875:   you'll see lots of similar code in rs6000.h.  */
        !           876:   
        !           877: #define FUNCTION_ARG_PADDING(MODE, TYPE) function_arg_padding ((MODE), (TYPE))
        !           878: 
        !           879: /* Do not expect to understand this without reading it several times.  I'm
        !           880:    tempted to try and simply it, but I worry about breaking something.  */
        !           881: 
        !           882: #define FUNCTION_ARG(CUM, MODE, TYPE, NAMED)                           \
        !           883:   (4 >= ((CUM).words + FUNCTION_ARG_SIZE ((MODE), (TYPE)))             \
        !           884:    ? (!TARGET_PORTABLE_RUNTIME || (TYPE) == 0                          \
        !           885:       || !FLOAT_MODE_P (MODE) || (CUM).nargs_prototype > 0)            \
        !           886:       ? gen_rtx (REG, (MODE),                                          \
        !           887:                 (FUNCTION_ARG_SIZE ((MODE), (TYPE)) > 1                \
        !           888:                  ? (((!current_call_is_indirect || TARGET_PORTABLE_RUNTIME) \
        !           889:                      && (MODE) == DFmode)                              \
        !           890:                     ? ((CUM).words                                     \
        !           891:                        ? (TARGET_SNAKE ? 50 : 35)                      \
        !           892:                        : (TARGET_SNAKE ? 46 : 33))                     \
        !           893:                     : ((CUM).words ? 23 : 25))                         \
        !           894:                  : (((!current_call_is_indirect || TARGET_PORTABLE_RUNTIME) \
        !           895:                      && (MODE) == SFmode)                              \
        !           896:                     ? (TARGET_SNAKE                                    \
        !           897:                        ? 44 + 2 * (CUM).words                          \
        !           898:                        : 32  + (CUM).words)                            \
        !           899:                     : (27 - (CUM).words - FUNCTION_ARG_SIZE ((MODE),   \
        !           900:                                                              (TYPE))))))\
        !           901:    /* We are calling a non-prototyped function with floating point     \
        !           902:       arguments using the portable conventions.  */                    \
        !           903:    : gen_rtx (EXPR_LIST, VOIDmode,                                     \
        !           904:              gen_rtx (REG, (MODE),                                     \
        !           905:                       (FUNCTION_ARG_SIZE ((MODE), (TYPE)) > 1          \
        !           906:                        ? ((CUM).words                                  \
        !           907:                           ? (TARGET_SNAKE ? 50 : 35)                   \
        !           908:                           : (TARGET_SNAKE ? 46 : 33))                  \
        !           909:                        : (TARGET_SNAKE                                 \
        !           910:                           ? 44 + 2 * (CUM).words                       \
        !           911:                           : 32 + (CUM).words))),                       \
        !           912:              gen_rtx (REG, (MODE),                                     \
        !           913:                       (FUNCTION_ARG_SIZE ((MODE), (TYPE)) > 1          \
        !           914:                        ? ((CUM).words ? 23 : 25)                       \
        !           915:                        : (27 - (CUM).words - FUNCTION_ARG_SIZE ((MODE),\
        !           916:                                                                 (TYPE)))))) \
        !           917:   /* Pass this parameter in the stack.  */                             \
        !           918:   : 0)
        !           919: 
        !           920: /* For an arg passed partly in registers and partly in memory,
        !           921:    this is the number of registers used.
        !           922:    For args passed entirely in registers or entirely in memory, zero.  */
        !           923: 
        !           924: #define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0
        !           925: 
        !           926: /* If defined, a C expression that gives the alignment boundary, in
        !           927:    bits, of an argument with the specified mode and type.  If it is
        !           928:    not defined,  `PARM_BOUNDARY' is used for all arguments.  */
        !           929: 
        !           930: #define FUNCTION_ARG_BOUNDARY(MODE, TYPE)                              \
        !           931:   (((TYPE) != 0)                                                       \
        !           932:        ? (((int_size_in_bytes (TYPE)) + 3) / 4) * BITS_PER_WORD        \
        !           933:        : ((GET_MODE_ALIGNMENT(MODE) <= PARM_BOUNDARY)                  \
        !           934:                ? PARM_BOUNDARY                                         \
        !           935:                : GET_MODE_ALIGNMENT(MODE)))
        !           936: 
        !           937: /* Arguments larger than eight bytes are passed by invisible reference */
        !           938: 
        !           939: #define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED)         \
        !           940:   ((TYPE) && int_size_in_bytes (TYPE) > 8)
        !           941: 
        !           942: extern struct rtx_def *hppa_compare_op0, *hppa_compare_op1;
        !           943: extern enum cmp_type hppa_branch_type;
        !           944: 
        !           945: /* Output the label for a function definition.  */
        !           946: #ifndef HP_FP_ARG_DESCRIPTOR_REVERSED
        !           947: #define ASM_DOUBLE_ARG_DESCRIPTORS(FILE, ARG0, ARG1)   \
        !           948:   do { fprintf (FILE, ",ARGW%d=FR", (ARG0));           \
        !           949:        fprintf (FILE, ",ARGW%d=FU", (ARG1));} while (0)
        !           950: #else
        !           951: #define ASM_DOUBLE_ARG_DESCRIPTORS(FILE, ARG0, ARG1)   \
        !           952:   do { fprintf (FILE, ",ARGW%d=FU", (ARG0));           \
        !           953:        fprintf (FILE, ",ARGW%d=FR", (ARG1));} while (0)
        !           954: #endif
        !           955: 
        !           956: #define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
        !           957:     do { tree fntype = TREE_TYPE (TREE_TYPE (DECL));                   \
        !           958:         tree tree_type = TREE_TYPE (DECL);                             \
        !           959:         tree parm;                                                     \
        !           960:         int i;                                                         \
        !           961:         if (TREE_PUBLIC (DECL) || TARGET_GAS)                          \
        !           962:           { extern int current_function_varargs;                       \
        !           963:             if (TREE_PUBLIC (DECL))                                    \
        !           964:               {                                                        \
        !           965:                 fputs ("\t.EXPORT ", FILE);                            \
        !           966:                 assemble_name (FILE, NAME);                            \
        !           967:                 fputs (",ENTRY,PRIV_LEV=3", FILE);                     \
        !           968:               }                                                        \
        !           969:             else                                                       \
        !           970:               {                                                        \
        !           971:                 fputs ("\t.PARAM ", FILE);                             \
        !           972:                 assemble_name (FILE, NAME);                            \
        !           973:               }                                                        \
        !           974:             if (TARGET_PORTABLE_RUNTIME)                               \
        !           975:               {                                                        \
        !           976:                 fputs ("ARGW0=NO,ARGW1=NO,ARGW2=NO,ARGW3=NO,", FILE);  \
        !           977:                 fputs ("RTNVAL=NO\n", FILE);                           \
        !           978:                 break;                                                 \
        !           979:               }                                                        \
        !           980:             for (parm = DECL_ARGUMENTS (DECL), i = 0; parm && i < 4;   \
        !           981:                  parm = TREE_CHAIN (parm))                             \
        !           982:               {                                                        \
        !           983:                 if (TYPE_MODE (DECL_ARG_TYPE (parm)) == SFmode)        \
        !           984:                   fprintf (FILE, ",ARGW%d=FR", i++);                   \
        !           985:                 else if (TYPE_MODE (DECL_ARG_TYPE (parm)) == DFmode)   \
        !           986:                   {                                                    \
        !           987:                     if (i <= 2)                                        \
        !           988:                       {                                                \
        !           989:                         if (i == 1) i++;                               \
        !           990:                         ASM_DOUBLE_ARG_DESCRIPTORS (FILE, i++, i++);   \
        !           991:                       }                                                \
        !           992:                     else                                               \
        !           993:                       break;                                           \
        !           994:                   }                                                    \
        !           995:                 else                                                   \
        !           996:                   {                                                    \
        !           997:                     int arg_size =                                     \
        !           998:                       FUNCTION_ARG_SIZE (TYPE_MODE (DECL_ARG_TYPE (parm)),\
        !           999:                                          DECL_ARG_TYPE (parm));        \
        !          1000:                     if (arg_size == 2 && i <= 2)                       \
        !          1001:                       {                                                \
        !          1002:                         if (i == 1) i++;                               \
        !          1003:                         fprintf (FILE, ",ARGW%d=GR", i++);             \
        !          1004:                         fprintf (FILE, ",ARGW%d=GR", i++);             \
        !          1005:                       }                                                \
        !          1006:                     else if (arg_size == 1)                            \
        !          1007:                       fprintf (FILE, ",ARGW%d=GR", i++);               \
        !          1008:                     else                                               \
        !          1009:                       i += arg_size;                                   \
        !          1010:                   }                                                    \
        !          1011:               }                                                        \
        !          1012:             /* anonymous args */                                       \
        !          1013:             if ((TYPE_ARG_TYPES (tree_type) != 0                       \
        !          1014:                  && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (tree_type)))\
        !          1015:                      != void_type_node))                               \
        !          1016:                 || current_function_varargs)                           \
        !          1017:               {                                                        \
        !          1018:                 for (; i < 4; i++)                                     \
        !          1019:                   fprintf (FILE, ",ARGW%d=GR", i);                     \
        !          1020:               }                                                        \
        !          1021:             if (TYPE_MODE (fntype) == DFmode)                          \
        !          1022:               fprintf (FILE, ",RTNVAL=FR");                            \
        !          1023:             else if (TYPE_MODE (fntype) == SFmode)                     \
        !          1024:               fprintf (FILE, ",RTNVAL=FU");                            \
        !          1025:             else if (fntype != void_type_node)                         \
        !          1026:               fprintf (FILE, ",RTNVAL=GR");                            \
        !          1027:             fputs ("\n", FILE);                                        \
        !          1028:           }} while (0)
        !          1029: 
        !          1030: /* This macro generates the assembly code for function entry.
        !          1031:    FILE is a stdio stream to output the code to.
        !          1032:    SIZE is an int: how many units of temporary storage to allocate.
        !          1033:    Refer to the array `regs_ever_live' to determine which registers
        !          1034:    to save; `regs_ever_live[I]' is nonzero if register number I
        !          1035:    is ever used in the function.  This macro is responsible for
        !          1036:    knowing which registers should not be saved even if used.  */
        !          1037: 
        !          1038: /* On HP-PA, move-double insns between fpu and cpu need an 8-byte block
        !          1039:    of memory.  If any fpu reg is used in the function, we allocate
        !          1040:    such a block here, at the bottom of the frame, just in case it's needed.
        !          1041: 
        !          1042:    If this function is a leaf procedure, then we may choose not
        !          1043:    to do a "save" insn.  The decision about whether or not
        !          1044:    to do this is made in regclass.c.  */
        !          1045: 
        !          1046: #define FUNCTION_PROLOGUE(FILE, SIZE) \
        !          1047:   output_function_prologue (FILE, SIZE)
        !          1048: 
        !          1049: /* Output assembler code to FILE to increment profiler label # LABELNO
        !          1050:    for profiling a function entry.
        !          1051: 
        !          1052:    Because HPUX _mcount is so different, we actually emit the
        !          1053:    profiling code in function_prologue. This just stores LABELNO for
        !          1054:    that. */
        !          1055: 
        !          1056: #define PROFILE_BEFORE_PROLOGUE
        !          1057: #define FUNCTION_PROFILER(FILE, LABELNO) \
        !          1058: { extern int hp_profile_labelno; hp_profile_labelno = (LABELNO);}
        !          1059: 
        !          1060: /* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
        !          1061:    the stack pointer does not matter.  The value is tested only in
        !          1062:    functions that have frame pointers.
        !          1063:    No definition is equivalent to always zero.  */
        !          1064: 
        !          1065: extern int may_call_alloca;
        !          1066: extern int current_function_pretend_args_size;
        !          1067: 
        !          1068: #define EXIT_IGNORE_STACK      \
        !          1069:  (get_frame_size () != 0       \
        !          1070:   || current_function_calls_alloca || current_function_outgoing_args_size)
        !          1071: 
        !          1072: 
        !          1073: /* This macro generates the assembly code for function exit,
        !          1074:    on machines that need it.  If FUNCTION_EPILOGUE is not defined
        !          1075:    then individual return instructions are generated for each
        !          1076:    return statement.  Args are same as for FUNCTION_PROLOGUE.
        !          1077: 
        !          1078:    The function epilogue should not depend on the current stack pointer!
        !          1079:    It should use the frame pointer only.  This is mandatory because
        !          1080:    of alloca; we also take advantage of it to omit stack adjustments
        !          1081:    before returning.  */
        !          1082: 
        !          1083: /* This declaration is needed due to traditional/ANSI
        !          1084:    incompatibilities which cannot be #ifdefed away
        !          1085:    because they occur inside of macros.  Sigh.  */
        !          1086: extern union tree_node *current_function_decl;
        !          1087: 
        !          1088: #define FUNCTION_EPILOGUE(FILE, SIZE)                  \
        !          1089:   output_function_epilogue (FILE, SIZE)
        !          1090: 
        !          1091: /* Output assembler code for a block containing the constant parts
        !          1092:    of a trampoline, leaving space for the variable parts.\
        !          1093: 
        !          1094:    The trampoline sets the static chain pointer to STATIC_CHAIN_REGNUM
        !          1095:    and then branches to the specified routine.
        !          1096: 
        !          1097:    This code template is copied from text segment to stack location
        !          1098:    and then patched with INITIALIZE_TRAMPOLINE to contain
        !          1099:    valid values, and then entered as a subroutine.
        !          1100: 
        !          1101:    It is best to keep this as small as possible to avoid having to
        !          1102:    flush multiple lines in the cache.  */
        !          1103: 
        !          1104: #define TRAMPOLINE_TEMPLATE(FILE) \
        !          1105:   {                                                    \
        !          1106:     fprintf (FILE, "\tldw      36(0,%%r22),%%r21\n");  \
        !          1107:     fprintf (FILE, "\tbb,>=,n  %%r21,30,.+16\n");      \
        !          1108:     fprintf (FILE, "\tdepi     0,31,2,%%r21\n");       \
        !          1109:     fprintf (FILE, "\tldw      4(0,%%r21),%%r19\n");   \
        !          1110:     fprintf (FILE, "\tldw      0(0,%%r21),%%r21\n");   \
        !          1111:     fprintf (FILE, "\tldsid    (0,%%r21),%%r1\n");     \
        !          1112:     fprintf (FILE, "\tmtsp     %%r1,%%sr0\n");         \
        !          1113:     fprintf (FILE, "\tbe       0(%%sr0,%%r21)\n");     \
        !          1114:     fprintf (FILE, "\tldw      40(0,%%r22),%%r29\n");  \
        !          1115:     fprintf (FILE, "\t.word    0\n");                  \
        !          1116:     fprintf (FILE, "\t.word    0\n");                  \
        !          1117:   }
        !          1118: 
        !          1119: /* Length in units of the trampoline for entering a nested function.
        !          1120: 
        !          1121:    Flush the cache entries corresponding to the first and last addresses
        !          1122:    of the trampoline.  This is necessary as the trampoline may cross two
        !          1123:    cache lines.
        !          1124: 
        !          1125:    If the code part of the trampoline ever grows to > 32 bytes, then it
        !          1126:    will become necessary to hack on the cacheflush pattern in pa.md.  */
        !          1127: 
        !          1128: #define TRAMPOLINE_SIZE (11 * 4)
        !          1129: 
        !          1130: /* Emit RTL insns to initialize the variable parts of a trampoline.
        !          1131:    FNADDR is an RTX for the address of the function's pure code.
        !          1132:    CXT is an RTX for the static chain value for the function.
        !          1133: 
        !          1134:    Move the function address to the trampoline template at offset 12.
        !          1135:    Move the static chain value to trampoline template at offset 16.  */
        !          1136: 
        !          1137: #define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
        !          1138: {                                                                      \
        !          1139:   rtx start_addr, end_addr;                                            \
        !          1140:                                                                        \
        !          1141:   start_addr = memory_address (Pmode, plus_constant ((TRAMP), 36));    \
        !          1142:   emit_move_insn (gen_rtx (MEM, Pmode, start_addr), (FNADDR));         \
        !          1143:   start_addr = memory_address (Pmode, plus_constant ((TRAMP), 40));    \
        !          1144:   emit_move_insn (gen_rtx (MEM, Pmode, start_addr), (CXT));            \
        !          1145:   /* fdc and fic only use registers for the address to flush,          \
        !          1146:      they do not accept integer displacements.  */                     \
        !          1147:   start_addr = force_reg (SImode, (TRAMP));                            \
        !          1148:   end_addr = force_reg (SImode, plus_constant ((TRAMP), 32));          \
        !          1149:   emit_insn (gen_dcacheflush (start_addr, end_addr));                  \
        !          1150:   end_addr = force_reg (SImode, plus_constant (start_addr, 32));       \
        !          1151:   emit_insn (gen_icacheflush (start_addr, end_addr, start_addr,                \
        !          1152:                              gen_reg_rtx (SImode), gen_reg_rtx (SImode)));\
        !          1153: }
        !          1154: 
        !          1155: /* Emit code for a call to builtin_saveregs.  We must emit USE insns which
        !          1156:    reference the 4 integer arg registers and 4 fp arg registers.
        !          1157:    Ordinarily they are not call used registers, but they are for
        !          1158:    _builtin_saveregs, so we must make this explicit.  */
        !          1159: 
        !          1160: #define EXPAND_BUILTIN_SAVEREGS(ARGLIST) (rtx)hppa_builtin_saveregs (ARGLIST)
        !          1161: 
        !          1162: 
        !          1163: /* Addressing modes, and classification of registers for them.  */
        !          1164: 
        !          1165: #define HAVE_POST_INCREMENT
        !          1166: #define HAVE_POST_DECREMENT
        !          1167: 
        !          1168: #define HAVE_PRE_DECREMENT
        !          1169: #define HAVE_PRE_INCREMENT
        !          1170: 
        !          1171: /* Macros to check register numbers against specific register classes.  */
        !          1172: 
        !          1173: /* These assume that REGNO is a hard or pseudo reg number.
        !          1174:    They give nonzero only if REGNO is a hard reg of the suitable class
        !          1175:    or a pseudo reg currently allocated to a suitable hard reg.
        !          1176:    Since they use reg_renumber, they are safe only once reg_renumber
        !          1177:    has been allocated, which happens in local-alloc.c.  */
        !          1178: 
        !          1179: #define REGNO_OK_FOR_INDEX_P(REGNO) \
        !          1180:   ((REGNO) && ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32))
        !          1181: #define REGNO_OK_FOR_BASE_P(REGNO)  \
        !          1182:   ((REGNO) && ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32))
        !          1183: #define REGNO_OK_FOR_FP_P(REGNO) \
        !          1184:   (((REGNO) >= 32 && (REGNO) <= 99)\
        !          1185:    || (reg_renumber[REGNO] >= 32 && reg_renumber[REGNO] <= 99))
        !          1186: 
        !          1187: /* Now macros that check whether X is a register and also,
        !          1188:    strictly, whether it is in a specified class.
        !          1189: 
        !          1190:    These macros are specific to the the HP-PA, and may be used only
        !          1191:    in code for printing assembler insns and in conditions for
        !          1192:    define_optimization.  */
        !          1193: 
        !          1194: /* 1 if X is an fp register.  */
        !          1195: 
        !          1196: #define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X)))
        !          1197: 
        !          1198: /* Maximum number of registers that can appear in a valid memory address.  */
        !          1199: 
        !          1200: #define MAX_REGS_PER_ADDRESS 2
        !          1201: 
        !          1202: /* Recognize any constant value that is a valid address except
        !          1203:    for symbolic addresses.  We get better CSE by rejecting them
        !          1204:    here and allowing hppa_legitimize_address to break them up.  We
        !          1205:    use most of the constants accepted by CONSTANT_P, except CONST_DOUBLE.  */
        !          1206: 
        !          1207: #define CONSTANT_ADDRESS_P(X) \
        !          1208:   ((GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF            \
        !          1209:    || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST               \
        !          1210:    || GET_CODE (X) == HIGH)                                            \
        !          1211:    && (reload_in_progress || reload_completed || ! symbolic_expression_p (X)))
        !          1212: 
        !          1213: /* Include all constant integers and constant doubles, but not
        !          1214:    floating-point, except for floating-point zero.  */
        !          1215: 
        !          1216: #define LEGITIMATE_CONSTANT_P(X)               \
        !          1217:   (GET_MODE_CLASS (GET_MODE (X)) != MODE_FLOAT \
        !          1218:     || (X) == CONST0_RTX (GET_MODE (X)))
        !          1219: 
        !          1220: /* Subroutine for EXTRA_CONSTRAINT.
        !          1221: 
        !          1222:    Return 1 iff OP is a pseudo which did not get a hard register and
        !          1223:    we are running the reload pass.  */
        !          1224: 
        !          1225: #define IS_RELOADING_PSEUDO_P(OP) \
        !          1226:   ((reload_in_progress                                 \
        !          1227:     && GET_CODE (OP) == REG                            \
        !          1228:     && REGNO (OP) >= FIRST_PSEUDO_REGISTER             \
        !          1229:     && reg_renumber [REGNO (OP)] < 0))
        !          1230: 
        !          1231: /* Optional extra constraints for this machine. Borrowed from sparc.h.
        !          1232: 
        !          1233:    For the HPPA, `Q' means that this is a memory operand but not a
        !          1234:    symbolic memory operand.  Note that an unassigned pseudo register
        !          1235:    is such a memory operand.  Needed because reload will generate
        !          1236:    these things in insns and then not re-recognize the insns, causing
        !          1237:    constrain_operands to fail.
        !          1238: 
        !          1239:    Also note `Q' accepts any memory operand during the reload pass.
        !          1240:    This includes out-of-range displacements in reg+d addressing.
        !          1241:    This makes for better code.  (??? For 2.5 address this issue).
        !          1242: 
        !          1243:    `R' is unused.
        !          1244: 
        !          1245:    `S' is unused.
        !          1246: 
        !          1247:    `T' is for fp loads and stores.  */
        !          1248: #define EXTRA_CONSTRAINT(OP, C)                                \
        !          1249:   ((C) == 'Q' ?                                                \
        !          1250:    (IS_RELOADING_PSEUDO_P (OP)                         \
        !          1251:     || (GET_CODE (OP) == MEM                           \
        !          1252:        && reload_in_progress)                          \
        !          1253:     || (GET_CODE (OP) == MEM                           \
        !          1254:        && memory_address_p (GET_MODE (OP), XEXP (OP, 0))\
        !          1255:        && ! symbolic_memory_operand (OP, VOIDmode)))   \
        !          1256:    : ((C) == 'T' ?                                     \
        !          1257:       (GET_CODE (OP) == MEM                            \
        !          1258:        /* Using DFmode forces only short displacements \
        !          1259:          to be recognized as valid in reg+d addresses.  */\
        !          1260:        && memory_address_p (DFmode, XEXP (OP, 0))) : 0))
        !          1261: 
        !          1262: /* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
        !          1263:    and check its validity for a certain class.
        !          1264:    We have two alternate definitions for each of them.
        !          1265:    The usual definition accepts all pseudo regs; the other rejects
        !          1266:    them unless they have been allocated suitable hard regs.
        !          1267:    The symbol REG_OK_STRICT causes the latter definition to be used.
        !          1268: 
        !          1269:    Most source files want to accept pseudo regs in the hope that
        !          1270:    they will get allocated to the class that the insn wants them to be in.
        !          1271:    Source files for reload pass need to be strict.
        !          1272:    After reload, it makes no difference, since pseudo regs have
        !          1273:    been eliminated by then.  */
        !          1274: 
        !          1275: #ifndef REG_OK_STRICT
        !          1276: 
        !          1277: /* Nonzero if X is a hard reg that can be used as an index
        !          1278:    or if it is a pseudo reg.  */
        !          1279: #define REG_OK_FOR_INDEX_P(X) \
        !          1280: (REGNO (X) && (REGNO (X) < 32 || REGNO (X) >= FIRST_PSEUDO_REGISTER))
        !          1281: /* Nonzero if X is a hard reg that can be used as a base reg
        !          1282:    or if it is a pseudo reg.  */
        !          1283: #define REG_OK_FOR_BASE_P(X) \
        !          1284: (REGNO (X) && (REGNO (X) < 32 || REGNO (X) >= FIRST_PSEUDO_REGISTER))
        !          1285: 
        !          1286: #else
        !          1287: 
        !          1288: /* Nonzero if X is a hard reg that can be used as an index.  */
        !          1289: #define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
        !          1290: /* Nonzero if X is a hard reg that can be used as a base reg.  */
        !          1291: #define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))
        !          1292: 
        !          1293: #endif
        !          1294: 
        !          1295: /* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
        !          1296:    that is a valid memory address for an instruction.
        !          1297:    The MODE argument is the machine mode for the MEM expression
        !          1298:    that wants to use this address.
        !          1299: 
        !          1300:    On the HP-PA, the actual legitimate addresses must be
        !          1301:    REG+REG, REG+(REG*SCALE) or REG+SMALLINT.
        !          1302:    But we can treat a SYMBOL_REF as legitimate if it is part of this
        !          1303:    function's constant-pool, because such addresses can actually
        !          1304:    be output as REG+SMALLINT.  */
        !          1305: 
        !          1306: #define VAL_5_BITS_P(X) ((unsigned)(X) + 0x10 < 0x20)
        !          1307: #define INT_5_BITS(X) VAL_5_BITS_P (INTVAL (X))
        !          1308: 
        !          1309: #define VAL_U5_BITS_P(X) ((unsigned)(X) < 0x20)
        !          1310: #define INT_U5_BITS(X) VAL_U5_BITS_P (INTVAL (X))
        !          1311: 
        !          1312: #define VAL_11_BITS_P(X) ((unsigned)(X) + 0x400 < 0x800)
        !          1313: #define INT_11_BITS(X) VAL_11_BITS_P (INTVAL (X))
        !          1314: 
        !          1315: #define VAL_14_BITS_P(X) ((unsigned)(X) + 0x2000 < 0x4000)
        !          1316: #define INT_14_BITS(X) VAL_14_BITS_P (INTVAL (X))
        !          1317: 
        !          1318: #define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)  \
        !          1319: {                                                      \
        !          1320:   if ((REG_P (X) && REG_OK_FOR_BASE_P (X))             \
        !          1321:       || ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_DEC         \
        !          1322:           || GET_CODE (X) == PRE_INC || GET_CODE (X) == POST_INC)      \
        !          1323:          && REG_P (XEXP (X, 0))                        \
        !          1324:          && REG_OK_FOR_BASE_P (XEXP (X, 0))))          \
        !          1325:     goto ADDR;                                         \
        !          1326:   else if (GET_CODE (X) == PLUS)                       \
        !          1327:     {                                                  \
        !          1328:       rtx base = 0, index;                             \
        !          1329:       if (flag_pic && XEXP (X, 0) == pic_offset_table_rtx)\
        !          1330:        {                                               \
        !          1331:          if (GET_CODE (XEXP (X, 1)) == REG             \
        !          1332:              && REG_OK_FOR_BASE_P (XEXP (X, 1)))       \
        !          1333:            goto ADDR;                                  \
        !          1334:          else if (flag_pic == 1                        \
        !          1335:                   && GET_CODE (XEXP (X, 1)) != REG     \
        !          1336:                   && GET_CODE (XEXP (X, 1)) != LO_SUM  \
        !          1337:                   && GET_CODE (XEXP (X, 1)) != MEM)    \
        !          1338:            goto ADDR;                                  \
        !          1339:        }                                               \
        !          1340:       else if (REG_P (XEXP (X, 0))                     \
        !          1341:          && REG_OK_FOR_BASE_P (XEXP (X, 0)))           \
        !          1342:        base = XEXP (X, 0), index = XEXP (X, 1);        \
        !          1343:       else if (REG_P (XEXP (X, 1))                     \
        !          1344:               && REG_OK_FOR_BASE_P (XEXP (X, 1)))      \
        !          1345:        base = XEXP (X, 1), index = XEXP (X, 0);        \
        !          1346:       if (base != 0)                                   \
        !          1347:        if (GET_CODE (index) == CONST_INT               \
        !          1348:            && ((INT_14_BITS (index) && (MODE) != SFmode && (MODE) != DFmode) \
        !          1349:                || INT_5_BITS (index)))                 \
        !          1350:          goto ADDR;                                    \
        !          1351:     }                                                  \
        !          1352:   else if (GET_CODE (X) == LO_SUM                      \
        !          1353:           && GET_CODE (XEXP (X, 0)) == REG             \
        !          1354:           && REG_OK_FOR_BASE_P (XEXP (X, 0))           \
        !          1355:           && CONSTANT_P (XEXP (X, 1))                  \
        !          1356:           && (MODE) != SFmode                          \
        !          1357:           && (MODE) != DFmode)                         \
        !          1358:     goto ADDR;                                         \
        !          1359:   else if (GET_CODE (X) == LO_SUM                      \
        !          1360:           && GET_CODE (XEXP (X, 0)) == SUBREG          \
        !          1361:           && GET_CODE (SUBREG_REG (XEXP (X, 0))) == REG\
        !          1362:           && REG_OK_FOR_BASE_P (SUBREG_REG (XEXP (X, 0)))\
        !          1363:           && CONSTANT_P (XEXP (X, 1))                  \
        !          1364:           && (MODE) != SFmode                          \
        !          1365:           && (MODE) != DFmode)                         \
        !          1366:     goto ADDR;                                         \
        !          1367:   else if (GET_CODE (X) == LABEL_REF                   \
        !          1368:           || (GET_CODE (X) == CONST_INT                \
        !          1369:               && INT_14_BITS (X)))                     \
        !          1370:     goto ADDR;                                         \
        !          1371: }
        !          1372: 
        !          1373: /* Try machine-dependent ways of modifying an illegitimate address
        !          1374:    to be legitimate.  If we find one, return the new, valid address.
        !          1375:    This macro is used in only one place: `memory_address' in explow.c.
        !          1376: 
        !          1377:    OLDX is the address as it was before break_out_memory_refs was called.
        !          1378:    In some cases it is useful to look at this to decide what needs to be done.
        !          1379: 
        !          1380:    MODE and WIN are passed so that this macro can use
        !          1381:    GO_IF_LEGITIMATE_ADDRESS.
        !          1382: 
        !          1383:    It is always safe for this macro to do nothing.  It exists to recognize
        !          1384:    opportunities to optimize the output.  */
        !          1385: 
        !          1386: extern struct rtx_def *hppa_legitimize_address ();
        !          1387: #define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN) \
        !          1388: { rtx orig_x = (X);                            \
        !          1389:   (X) = hppa_legitimize_address (X, OLDX, MODE);       \
        !          1390:   if ((X) != orig_x && memory_address_p (MODE, X)) \
        !          1391:     goto WIN; }
        !          1392: 
        !          1393: /* Go to LABEL if ADDR (a legitimate address expression)
        !          1394:    has an effect that depends on the machine mode it is used for.  */
        !          1395: 
        !          1396: #define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)       \
        !          1397:   if (GET_CODE (ADDR) == PRE_DEC       \
        !          1398:       || GET_CODE (ADDR) == POST_DEC   \
        !          1399:       || GET_CODE (ADDR) == PRE_INC    \
        !          1400:       || GET_CODE (ADDR) == POST_INC)  \
        !          1401:     goto LABEL
        !          1402: 
        !          1403: /* Define this macro if references to a symbol must be treated
        !          1404:    differently depending on something about the variable or
        !          1405:    function named by the symbol (such as what section it is in).
        !          1406: 
        !          1407:    The macro definition, if any, is executed immediately after the
        !          1408:    rtl for DECL or other node is created.
        !          1409:    The value of the rtl will be a `mem' whose address is a
        !          1410:    `symbol_ref'.
        !          1411: 
        !          1412:    The usual thing for this macro to do is to a flag in the
        !          1413:    `symbol_ref' (such as `SYMBOL_REF_FLAG') or to store a modified
        !          1414:    name string in the `symbol_ref' (if one bit is not enough
        !          1415:    information).
        !          1416: 
        !          1417:    On the HP-PA we use this to indicate if a symbol is in text or
        !          1418:    data space.  Also, function labels need special treatment. */
        !          1419: 
        !          1420: #define TEXT_SPACE_P(DECL)\
        !          1421:   (TREE_CODE (DECL) == FUNCTION_DECL                                   \
        !          1422:    || (TREE_CODE (DECL) == VAR_DECL                                    \
        !          1423:        && TREE_READONLY (DECL) && ! TREE_SIDE_EFFECTS (DECL)           \
        !          1424:        && !flag_pic)                                                   \
        !          1425:    || (*tree_code_type[(int) TREE_CODE (DECL)] == 'c'                  \
        !          1426:        && !(TREE_CODE (DECL) == STRING_CST && flag_writable_strings)))
        !          1427: 
        !          1428: #define FUNCTION_NAME_P(NAME) \
        !          1429: (*(NAME) == '@' || (*(NAME) == '*' && *((NAME) + 1) == '@'))
        !          1430: 
        !          1431: #define ENCODE_SECTION_INFO(DECL)\
        !          1432: do                                                     \
        !          1433:   { if (TEXT_SPACE_P (DECL))                           \
        !          1434:       {        rtx _rtl;                                       \
        !          1435:        if (TREE_CODE (DECL) == FUNCTION_DECL           \
        !          1436:            || TREE_CODE (DECL) == VAR_DECL)            \
        !          1437:          _rtl = DECL_RTL (DECL);                       \
        !          1438:        else                                            \
        !          1439:          _rtl = TREE_CST_RTL (DECL);                   \
        !          1440:        SYMBOL_REF_FLAG (XEXP (_rtl, 0)) = 1;           \
        !          1441:        if (TREE_CODE (DECL) == FUNCTION_DECL)          \
        !          1442:          hppa_encode_label (XEXP (DECL_RTL (DECL), 0));\
        !          1443:       }                                                        \
        !          1444:   }                                                    \
        !          1445: while (0)
        !          1446: 
        !          1447: /* Store the user-specified part of SYMBOL_NAME in VAR.
        !          1448:    This is sort of inverse to ENCODE_SECTION_INFO.  */
        !          1449: 
        !          1450: #define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME)   \
        !          1451:   (VAR) = ((SYMBOL_NAME)  + ((SYMBOL_NAME)[0] == '*' ? \
        !          1452:                             1 + (SYMBOL_NAME)[1] == '@'\
        !          1453:                             : (SYMBOL_NAME)[0] == '@'))
        !          1454: 
        !          1455: /* Specify the machine mode that this machine uses
        !          1456:    for the index in the tablejump instruction.  */
        !          1457: #define CASE_VECTOR_MODE DImode
        !          1458: 
        !          1459: /* Define this if the tablejump instruction expects the table
        !          1460:    to contain offsets from the address of the table.
        !          1461:    Do not define this if the table should contain absolute addresses.  */
        !          1462: /* #define CASE_VECTOR_PC_RELATIVE */
        !          1463: 
        !          1464: #define CASE_DROPS_THROUGH
        !          1465: /* Specify the tree operation to be used to convert reals to integers.  */
        !          1466: #define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR
        !          1467: 
        !          1468: /* This is the kind of divide that is easiest to do in the general case.  */
        !          1469: #define EASY_DIV_EXPR TRUNC_DIV_EXPR
        !          1470: 
        !          1471: /* Define this as 1 if `char' should by default be signed; else as 0.  */
        !          1472: #define DEFAULT_SIGNED_CHAR 1
        !          1473: 
        !          1474: /* Max number of bytes we can move from memory to memory
        !          1475:    in one reasonably fast instruction.  */
        !          1476: #define MOVE_MAX 8
        !          1477: 
        !          1478: /* Define if operations between registers always perform the operation
        !          1479:    on the full register even if a narrower mode is specified.  */
        !          1480: #define WORD_REGISTER_OPERATIONS
        !          1481: 
        !          1482: /* Define if loading in MODE, an integral mode narrower than BITS_PER_WORD
        !          1483:    will either zero-extend or sign-extend.  The value of this macro should
        !          1484:    be the code that says which one of the two operations is implicitly
        !          1485:    done, NIL if none.  */
        !          1486: #define LOAD_EXTEND_OP(MODE) ZERO_EXTEND
        !          1487: 
        !          1488: /* Nonzero if access to memory by bytes is slow and undesirable.  */
        !          1489: #define SLOW_BYTE_ACCESS 1
        !          1490: 
        !          1491: /* Do not break .stabs pseudos into continuations.  */
        !          1492: #define DBX_CONTIN_LENGTH 0
        !          1493: 
        !          1494: /* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
        !          1495:    is done just by pretending it is already truncated.  */
        !          1496: #define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1
        !          1497: 
        !          1498: /* We assume that the store-condition-codes instructions store 0 for false
        !          1499:    and some other value for true.  This is the value stored for true.  */
        !          1500: 
        !          1501: #define STORE_FLAG_VALUE 1
        !          1502: 
        !          1503: /* When a prototype says `char' or `short', really pass an `int'.  */
        !          1504: #define PROMOTE_PROTOTYPES
        !          1505: 
        !          1506: /* Specify the machine mode that pointers have.
        !          1507:    After generation of rtl, the compiler makes no further distinction
        !          1508:    between pointers and any other objects of this machine mode.  */
        !          1509: #define Pmode SImode
        !          1510: 
        !          1511: /* Add any extra modes needed to represent the condition code.
        !          1512: 
        !          1513:    HPPA floating comparisons produce condition codes. */
        !          1514: #define EXTRA_CC_MODES CCFPmode
        !          1515: 
        !          1516: /* Define the names for the modes specified above.  */
        !          1517: #define EXTRA_CC_NAMES "CCFP"
        !          1518: 
        !          1519: /* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
        !          1520:    return the mode to be used for the comparison.  For floating-point, CCFPmode
        !          1521:    should be used.  CC_NOOVmode should be used when the first operand is a
        !          1522:    PLUS, MINUS, or NEG.  CCmode should be used when no special processing is
        !          1523:    needed.  */
        !          1524: #define SELECT_CC_MODE(OP,X,Y) \
        !          1525:   (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT ? CCFPmode : CCmode)    \
        !          1526: 
        !          1527: /* A function address in a call instruction
        !          1528:    is a byte address (for indexing purposes)
        !          1529:    so give the MEM rtx a byte's mode.  */
        !          1530: #define FUNCTION_MODE SImode
        !          1531: 
        !          1532: /* Define this if addresses of constant functions
        !          1533:    shouldn't be put through pseudo regs where they can be cse'd.
        !          1534:    Desirable on machines where ordinary constants are expensive
        !          1535:    but a CALL with constant address is cheap.  */
        !          1536: #define NO_FUNCTION_CSE
        !          1537: 
        !          1538: /* Define this to be nonzero if shift instructions ignore all but the low-order
        !          1539:    few bits. */
        !          1540: #define SHIFT_COUNT_TRUNCATED 1
        !          1541: 
        !          1542: /* Use atexit for static constructors/destructors, instead of defining
        !          1543:    our own exit function.  */
        !          1544: #define HAVE_ATEXIT
        !          1545: 
        !          1546: /* Compute the cost of computing a constant rtl expression RTX
        !          1547:    whose rtx-code is CODE.  The body of this macro is a portion
        !          1548:    of a switch statement.  If the code is computed here,
        !          1549:    return it with a return statement.  Otherwise, break from the switch.  */
        !          1550: 
        !          1551: #define CONST_COSTS(RTX,CODE,OUTER_CODE) \
        !          1552:   case CONST_INT:                                              \
        !          1553:     if (INTVAL (RTX) == 0) return 0;                           \
        !          1554:     if (INT_14_BITS (RTX)) return 1;                           \
        !          1555:   case HIGH:                                                   \
        !          1556:     return 2;                                                  \
        !          1557:   case CONST:                                                  \
        !          1558:   case LABEL_REF:                                              \
        !          1559:   case SYMBOL_REF:                                             \
        !          1560:     return 4;                                                  \
        !          1561:   case CONST_DOUBLE:                                           \
        !          1562:     if (RTX == CONST0_RTX (DFmode) || RTX == CONST0_RTX (SFmode)\
        !          1563:        && OUTER_CODE != SET)                                   \
        !          1564:       return 0;                                                        \
        !          1565:     else                                                       \
        !          1566:       return 8;
        !          1567: 
        !          1568: #define ADDRESS_COST(RTX) \
        !          1569:   (GET_CODE (RTX) == REG ? 1 : hppa_address_cost (RTX))
        !          1570: 
        !          1571: /* Compute extra cost of moving data between one register class
        !          1572:    and another.
        !          1573: 
        !          1574:    Make moves from SAR so expensive they should never happen.  We used to
        !          1575:    have 0xffff here, but that generates overflow in rare cases.
        !          1576: 
        !          1577:    Copies involving a FP register and a non-FP register are relatively
        !          1578:    expensive because they must go through memory.
        !          1579: 
        !          1580:    Other copies are reasonably cheap.  */
        !          1581: #define REGISTER_MOVE_COST(CLASS1, CLASS2) \
        !          1582:  (CLASS1 == SHIFT_REGS ? 0x100                                 \
        !          1583:   : FP_REG_CLASS_P (CLASS1) && ! FP_REG_CLASS_P (CLASS2) ? 16  \
        !          1584:   : FP_REG_CLASS_P (CLASS2) && ! FP_REG_CLASS_P (CLASS1) ? 16  \
        !          1585:   : 2)
        !          1586: 
        !          1587: 
        !          1588: /* Provide the costs of a rtl expression.  This is in the body of a
        !          1589:    switch on CODE.  The purpose for the cost of MULT is to encourage
        !          1590:    `synth_mult' to find a synthetic multiply when reasonable.  */
        !          1591: 
        !          1592: #define RTX_COSTS(X,CODE,OUTER_CODE) \
        !          1593:   case MULT:                                                   \
        !          1594:     return TARGET_SNAKE && ! TARGET_DISABLE_FPREGS             \
        !          1595:       ? COSTS_N_INSNS (8) : COSTS_N_INSNS (20);                \
        !          1596:   case DIV:                                                    \
        !          1597:   case UDIV:                                                   \
        !          1598:   case MOD:                                                    \
        !          1599:   case UMOD:                                                   \
        !          1600:     return COSTS_N_INSNS (60);                                 \
        !          1601:   case PLUS:                                                   \
        !          1602:     if (GET_CODE (XEXP (X, 0)) == MULT                         \
        !          1603:        && shadd_operand (XEXP (XEXP (X, 0), 1), VOIDmode))     \
        !          1604:       return (2 + rtx_cost (XEXP (XEXP (X, 0), 0), OUTER_CODE) \
        !          1605:              + rtx_cost (XEXP (X, 1), OUTER_CODE));            \
        !          1606:     break;
        !          1607: 
        !          1608: /* Adjust the cost of dependencies.  */
        !          1609: 
        !          1610: #define ADJUST_COST(INSN,LINK,DEP,COST) \
        !          1611:   (COST) = pa_adjust_cost (INSN, LINK, DEP, COST)
        !          1612: 
        !          1613: /* Handling the special cases is going to get too complicated for a macro,
        !          1614:    just call `pa_adjust_insn_length' to do the real work.  */
        !          1615: #define ADJUST_INSN_LENGTH(INSN, LENGTH)       \
        !          1616:   LENGTH += pa_adjust_insn_length (INSN, LENGTH);
        !          1617: 
        !          1618: /* Enable a bug fix.  (This is for extra caution.)  */
        !          1619: #define SHORTEN_WITH_ADJUST_INSN_LENGTH
        !          1620: 
        !          1621: /* Millicode insns are actually function calls with some special
        !          1622:    constraints on arguments and register usage.
        !          1623: 
        !          1624:    Millicode calls always expect their arguments in the integer argument
        !          1625:    registers, and always return their result in %r29 (ret1).  They
        !          1626:    are expected to clobber their arguments, %r1, %r29, and %r31 and
        !          1627:    nothing else.
        !          1628: 
        !          1629:    These macros tell reorg that the references to arguments and
        !          1630:    register clobbers for millicode calls do not appear to happen
        !          1631:    until after the millicode call.  This allows reorg to put insns
        !          1632:    which set the argument registers into the delay slot of the millicode
        !          1633:    call -- thus they act more like traditional CALL_INSNs.
        !          1634: 
        !          1635:    get_attr_type will try to recognize the given insn, so make sure to
        !          1636:    filter out things it will not accept -- SEQUENCE, USE and CLOBBER insns
        !          1637:    in particular.  */
        !          1638: #define INSN_SETS_ARE_DELAYED(X) \
        !          1639:   ((GET_CODE (X) == INSN                       \
        !          1640:     && GET_CODE (PATTERN (X)) != SEQUENCE      \
        !          1641:     && GET_CODE (PATTERN (X)) != USE           \
        !          1642:     && GET_CODE (PATTERN (X)) != CLOBBER       \
        !          1643:     && get_attr_type (X) == TYPE_MILLI))
        !          1644: 
        !          1645: #define INSN_REFERENCES_ARE_DELAYED(X) \
        !          1646:   ((GET_CODE (X) == INSN                       \
        !          1647:     && GET_CODE (PATTERN (X)) != SEQUENCE      \
        !          1648:     && GET_CODE (PATTERN (X)) != USE           \
        !          1649:     && GET_CODE (PATTERN (X)) != CLOBBER       \
        !          1650:     && get_attr_type (X) == TYPE_MILLI))
        !          1651: 
        !          1652: 
        !          1653: /* Control the assembler format that we output.  */
        !          1654: 
        !          1655: /* Output at beginning of assembler file.  */
        !          1656: 
        !          1657: #define ASM_FILE_START(FILE) \
        !          1658: do { fprintf (FILE, "\t.SPACE $PRIVATE$\n\
        !          1659: \t.SUBSPA $DATA$,QUAD=1,ALIGN=8,ACCESS=31\n\
        !          1660: \t.SUBSPA $BSS$,QUAD=1,ALIGN=8,ACCESS=31,ZERO,SORT=82\n\
        !          1661: \t.SPACE $TEXT$\n\
        !          1662: \t.SUBSPA $LIT$,QUAD=0,ALIGN=8,ACCESS=44\n\
        !          1663: \t.SUBSPA $CODE$,QUAD=0,ALIGN=8,ACCESS=44,CODE_ONLY\n\
        !          1664: \t.IMPORT $global$,DATA\n\
        !          1665: \t.IMPORT $$dyncall,MILLICODE\n");\
        !          1666:      if (profile_flag)\
        !          1667:        fprintf (FILE, "\t.IMPORT _mcount, CODE\n");\
        !          1668:      if (write_symbols != NO_DEBUG) \
        !          1669:        output_file_directive ((FILE), main_input_filename); \
        !          1670:    } while (0)
        !          1671: 
        !          1672: /* Output to assembler file text saying following lines
        !          1673:    may contain character constants, extra white space, comments, etc.  */
        !          1674: 
        !          1675: #define ASM_APP_ON ""
        !          1676: 
        !          1677: /* Output to assembler file text saying following lines
        !          1678:    no longer contain unusual constructs.  */
        !          1679: 
        !          1680: #define ASM_APP_OFF ""
        !          1681: 
        !          1682: /* We don't yet know how to identify GCC to HP-PA machines.  */
        !          1683: #define ASM_IDENTIFY_GCC(FILE) fprintf (FILE, "; gcc_compiled.:\n")
        !          1684: 
        !          1685: /* Output before code.  */
        !          1686: 
        !          1687: /* Supposedly the assembler rejects the command if there is no tab!  */
        !          1688: #define TEXT_SECTION_ASM_OP "\t.SPACE $TEXT$\n\t.SUBSPA $CODE$\n"
        !          1689: 
        !          1690: /* Output before read-only data.  */
        !          1691: 
        !          1692: /* Supposedly the assembler rejects the command if there is no tab!  */
        !          1693: #define READONLY_DATA_ASM_OP "\t.SPACE $TEXT$\n\t.SUBSPA $LIT$\n"
        !          1694: 
        !          1695: #define READONLY_DATA_SECTION readonly_data
        !          1696: 
        !          1697: /* Output before writable data.  */
        !          1698: 
        !          1699: /* Supposedly the assembler rejects the command if there is no tab!  */
        !          1700: #define DATA_SECTION_ASM_OP "\t.SPACE $PRIVATE$\n\t.SUBSPA $DATA$\n"
        !          1701: 
        !          1702: /* Output before uninitialized data.  */
        !          1703: 
        !          1704: #define BSS_SECTION_ASM_OP "\t.SPACE $PRIVATE$\n\t.SUBSPA $BSS$\n"
        !          1705: 
        !          1706: /* Define the .bss section for ASM_OUTPUT_LOCAL to use. */
        !          1707: 
        !          1708: #define EXTRA_SECTIONS in_bss, in_readonly_data
        !          1709: 
        !          1710: #define EXTRA_SECTION_FUNCTIONS                                                \
        !          1711: void                                                                   \
        !          1712: bss_section ()                                                         \
        !          1713: {                                                                      \
        !          1714:   if (in_section != in_bss)                                            \
        !          1715:     {                                                                  \
        !          1716:       fprintf (asm_out_file, "%s\n", BSS_SECTION_ASM_OP);              \
        !          1717:       in_section = in_bss;                                             \
        !          1718:     }                                                                  \
        !          1719: }                                                                      \
        !          1720: void                                                                   \
        !          1721: readonly_data ()                                                       \
        !          1722: {                                                                      \
        !          1723:   if (in_section != in_readonly_data)                                  \
        !          1724:     {                                                                  \
        !          1725:       fprintf (asm_out_file, "%s\n", READONLY_DATA_ASM_OP);            \
        !          1726:       in_section = in_readonly_data;                                   \
        !          1727:     }                                                                  \
        !          1728: }
        !          1729: 
        !          1730: 
        !          1731: /* How to refer to registers in assembler output.
        !          1732:    This sequence is indexed by compiler's hard-register-number (see above).  */
        !          1733: 
        !          1734: #define REGISTER_NAMES \
        !          1735: {"0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7",                 \
        !          1736:  "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15",         \
        !          1737:  "%r16", "%r17", "%r18", "%r19", "%r20", "%r21", "%r22", "%r23",       \
        !          1738:  "%r24", "%r25", "%r26", "%r27", "%r28", "%r29", "%r30", "%r31",       \
        !          1739:  "%fr4", "%fr5", "%fr6", "%fr7",       \
        !          1740:  "%fr8", "%fr9", "%fr10", "%fr11", "%fr12", "%fr13", "%fr14", "%fr15", \
        !          1741:  "%fr4", "%fr4R", "%fr5", "%fr5R", "%fr6", "%fr6R", "%fr7", "%fr7R",   \
        !          1742:  "%fr8", "%fr8R", "%fr9", "%fr9R", "%fr10", "%fr10R", "%fr11", "%fr11R",\
        !          1743:  "%fr12", "%fr12R", "%fr13", "%fr13R", "%fr14", "%fr14R", "%fr15", "%fr15R",\
        !          1744:  "%fr16", "%fr16R", "%fr17", "%fr17R", "%fr18", "%fr18R", "%fr19", "%fr19R",\
        !          1745:  "%fr20", "%fr20R", "%fr21", "%fr21R", "%fr22", "%fr22R", "%fr23", "%fr23R",\
        !          1746:  "%fr24", "%fr24R", "%fr25", "%fr25R", "%fr26", "%fr26R", "%fr27", "%fr27R",\
        !          1747:  "%fr28", "%fr28R", "%fr29", "%fr29R", "%fr30", "%fr30R", "%fr31", "%fr31R",\
        !          1748:  "SAR"}
        !          1749: 
        !          1750: /* How to renumber registers for dbx and gdb.
        !          1751: 
        !          1752:    Registers 0  - 31 remain unchanged.
        !          1753: 
        !          1754:    Registers 32 - 43 are mapped to 72 - 94 (even numbers only)
        !          1755: 
        !          1756:    Registers 44 - 100 are mapped to 72 - 128 
        !          1757: 
        !          1758:    Register 101 is mapped to 32.  */
        !          1759: 
        !          1760: #define DBX_REGISTER_NUMBER(REGNO) \
        !          1761:   ((REGNO) <= 31 ? (REGNO) :                                   \
        !          1762:    ((REGNO) > 31 && (REGNO) <= 43 ? ((REGNO) - 32) * 2 + 72 :  \
        !          1763:     ((REGNO) > 43 && (REGNO) <= 100 ? (REGNO) + 28 : 32)))
        !          1764: 
        !          1765: /* This is how to output the definition of a user-level label named NAME,
        !          1766:    such as the label on a static function or variable NAME.  */
        !          1767: 
        !          1768: #define ASM_OUTPUT_LABEL(FILE, NAME)   \
        !          1769:   do { assemble_name (FILE, NAME);     \
        !          1770:        fputc ('\n', FILE); } while (0)
        !          1771: 
        !          1772: /* This is how to output a command to make the user-level label named NAME
        !          1773:    defined for reference from other files.  */
        !          1774: 
        !          1775: #define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)  \
        !          1776:   do { fputs ("\t.IMPORT ", FILE);                             \
        !          1777:         assemble_name (FILE, NAME);                            \
        !          1778:        if (FUNCTION_NAME_P (NAME))                                     \
        !          1779:         fputs (",CODE\n", FILE);                               \
        !          1780:        else                                                    \
        !          1781:         fputs (",DATA\n", FILE);                               \
        !          1782:      } while (0)
        !          1783: 
        !          1784: /* hpux ld doesn't output the object file name, or anything useful at
        !          1785:    all, to indicate the start of an object file's symbols. This screws
        !          1786:    up gdb, so we'll output this magic cookie at the end of an object
        !          1787:    file with debugging symbols */
        !          1788: 
        !          1789: #define ASM_FILE_END(FILE) \
        !          1790:   do { if (write_symbols == DBX_DEBUG)\
        !          1791:         { fputs (TEXT_SECTION_ASM_OP, FILE);\
        !          1792:           fputs ("\t.stabs \"end_file.\",4,0,0,Ltext_end\nLtext_end:\n",\
        !          1793:                  (FILE));\
        !          1794:         }\
        !          1795:      } while (0)
        !          1796: 
        !          1797: /* The bogus HP assembler requires ALL external references to be
        !          1798:    "imported", even library calls. They look a bit different, so
        !          1799:    here's this macro. */
        !          1800: 
        !          1801: #define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, RTL) \
        !          1802:   do { fputs ("\t.IMPORT ", FILE);                                     \
        !          1803:        assemble_name (FILE, XSTR ((RTL), 0));                          \
        !          1804:        fputs (",CODE\n", FILE);                                                \
        !          1805:      } while (0)
        !          1806: 
        !          1807: #define ASM_GLOBALIZE_LABEL(FILE, NAME)                                        \
        !          1808:   do {                                                                 \
        !          1809:     /* We only handle DATA objects here, functions are globalized in   \
        !          1810:        ASM_DECLARE_FUNCTION_NAME.  */                                  \
        !          1811:     if (! FUNCTION_NAME_P (NAME))                                      \
        !          1812:       {                                                                        \
        !          1813:        fputs ("\t.EXPORT ", FILE);                                     \
        !          1814:        assemble_name (FILE, NAME);                                     \
        !          1815:        fputs (",DATA\n", FILE);                                        \
        !          1816:       }                                                                        \
        !          1817:   } while (0)
        !          1818: 
        !          1819: /* This is how to output a reference to a user-level label named NAME.
        !          1820:    `assemble_name' uses this.  */
        !          1821: 
        !          1822: #define ASM_OUTPUT_LABELREF(FILE,NAME) \
        !          1823:   fprintf ((FILE), "%s", (NAME) + (FUNCTION_NAME_P (NAME) ? 1 : 0))
        !          1824: 
        !          1825: /* This is how to output an internal numbered label where
        !          1826:    PREFIX is the class of label and NUM is the number within the class.  */
        !          1827: 
        !          1828: #define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)     \
        !          1829:   {fprintf (FILE, "%c$%s%04d\n", (PREFIX)[0], (PREFIX) + 1, NUM);}
        !          1830: 
        !          1831: /* This is how to store into the string LABEL
        !          1832:    the symbol_ref name of an internal numbered label where
        !          1833:    PREFIX is the class of label and NUM is the number within the class.
        !          1834:    This is suitable for output with `assemble_name'.  */
        !          1835: 
        !          1836: #define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)  \
        !          1837:   sprintf (LABEL, "*%c$%s%04d", (PREFIX)[0], (PREFIX) + 1, NUM)
        !          1838: 
        !          1839: /* This is how to output an assembler line defining a `double' constant.  */
        !          1840: 
        !          1841: #define ASM_OUTPUT_DOUBLE(FILE,VALUE)  \
        !          1842:   do { union { double d; int i[2];} __u;       \
        !          1843:     __u.d = (VALUE);                           \
        !          1844:     fprintf (FILE, "\t; .double %.20e\n\t.word %d ; = 0x%x\n\t.word %d ; = 0x%x\n",    \
        !          1845:             __u.d, __u.i[0], __u.i[0], __u.i[1], __u.i[1]);    \
        !          1846:   } while (0)
        !          1847: 
        !          1848: /* This is how to output an assembler line defining a `float' constant.  */
        !          1849: 
        !          1850: #define ASM_OUTPUT_FLOAT(FILE,VALUE)  \
        !          1851:   do { union { float f; int i;} __u;           \
        !          1852:     __u.f = (VALUE);                           \
        !          1853:     fprintf (FILE, "\t; .float %.12e\n\t.word %d ; = 0x%x\n", __u.f, __u.i, __u.i); \
        !          1854:   } while (0)
        !          1855: 
        !          1856: /* This is how to output an assembler line defining an `int' constant.  */
        !          1857: 
        !          1858: #define ASM_OUTPUT_INT(FILE,VALUE)  \
        !          1859: { fprintf (FILE, "\t.word ");                  \
        !          1860:   if (function_label_operand (VALUE, VOIDmode) \
        !          1861:       && !TARGET_PORTABLE_RUNTIME)             \
        !          1862:     fprintf (FILE, "P%%");                     \
        !          1863:   output_addr_const (FILE, (VALUE));           \
        !          1864:   fprintf (FILE, "\n");}
        !          1865: 
        !          1866: /* Likewise for `short' and `char' constants.  */
        !          1867: 
        !          1868: #define ASM_OUTPUT_SHORT(FILE,VALUE)  \
        !          1869: ( fprintf (FILE, "\t.half "),                  \
        !          1870:   output_addr_const (FILE, (VALUE)),           \
        !          1871:   fprintf (FILE, "\n"))
        !          1872: 
        !          1873: #define ASM_OUTPUT_CHAR(FILE,VALUE)  \
        !          1874: ( fprintf (FILE, "\t.byte "),                  \
        !          1875:   output_addr_const (FILE, (VALUE)),           \
        !          1876:   fprintf (FILE, "\n"))
        !          1877: 
        !          1878: /* This is how to output an assembler line for a numeric constant byte.  */
        !          1879: 
        !          1880: #define ASM_OUTPUT_BYTE(FILE,VALUE)  \
        !          1881:   fprintf (FILE, "\t.byte 0x%x\n", (VALUE))
        !          1882: 
        !          1883: #define ASM_OUTPUT_ASCII(FILE, P, SIZE)  \
        !          1884:   output_ascii ((FILE), (P), (SIZE))
        !          1885: 
        !          1886: #define ASM_OUTPUT_REG_PUSH(FILE,REGNO)
        !          1887: #define ASM_OUTPUT_REG_POP(FILE,REGNO)
        !          1888: /* This is how to output an element of a case-vector that is absolute.
        !          1889:    Note that this method makes filling these branch delay slots
        !          1890:    impossible.  */
        !          1891: 
        !          1892: #define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
        !          1893:   fprintf (FILE, "\tb L$%04d\n\tnop\n", VALUE)
        !          1894: 
        !          1895: /* Jump tables are executable code and live in the TEXT section on the PA.  */
        !          1896: #define JUMP_TABLES_IN_TEXT_SECTION
        !          1897: 
        !          1898: /* This is how to output an element of a case-vector that is relative.
        !          1899:    This must be defined correctly as it is used when generating PIC code.
        !          1900: 
        !          1901:    I belive it safe to use the same definition as ASM_OUTPUT_ADDR_VEC_ELT
        !          1902:    on the PA since ASM_OUTPUT_ADDR_VEC_ELT uses pc-relative jump instructions
        !          1903:    rather than a table of absolute addresses.  */
        !          1904: 
        !          1905: #define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)  \
        !          1906:   fprintf (FILE, "\tb L$%04d\n\tnop\n", VALUE)
        !          1907: 
        !          1908: /* This is how to output an assembler line
        !          1909:    that says to advance the location counter
        !          1910:    to a multiple of 2**LOG bytes.  */
        !          1911: 
        !          1912: #define ASM_OUTPUT_ALIGN(FILE,LOG)     \
        !          1913:     fprintf (FILE, "\t.align %d\n", (1<<(LOG)))
        !          1914: 
        !          1915: #define ASM_OUTPUT_SKIP(FILE,SIZE)  \
        !          1916:   fprintf (FILE, "\t.blockz %d\n", (SIZE))
        !          1917: 
        !          1918: /* This says how to output an assembler line
        !          1919:    to define a global common symbol.  */
        !          1920: 
        !          1921: /* Supposedly the assembler rejects the command if there is no tab!  */
        !          1922: 
        !          1923: 
        !          1924: #define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)  \
        !          1925: { bss_section ();                                      \
        !          1926:   assemble_name ((FILE), (NAME));                      \
        !          1927:   fputs ("\t.comm ", (FILE));                          \
        !          1928:   fprintf ((FILE), "%d\n", (ROUNDED));}
        !          1929: 
        !          1930: /* This says how to output an assembler line
        !          1931:    to define a local common symbol.  */
        !          1932: 
        !          1933: #define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
        !          1934: { bss_section ();                                              \
        !          1935:   fprintf ((FILE), "\t.align %d\n", (SIZE) <= 4 ? 4 : 8);      \
        !          1936:   assemble_name ((FILE), (NAME));                              \
        !          1937:   fprintf ((FILE), "\n\t.block %d\n", (ROUNDED));}
        !          1938: 
        !          1939: /* Store in OUTPUT a string (made with alloca) containing
        !          1940:    an assembler-name for a local static variable named NAME.
        !          1941:    LABELNO is an integer which is different for each call.  */
        !          1942: 
        !          1943: #define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO) \
        !          1944: ( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 12),   \
        !          1945:   sprintf ((OUTPUT), "%s___%d", (NAME), (LABELNO)))
        !          1946: 
        !          1947: /* Define the parentheses used to group arithmetic operations
        !          1948:    in assembler code.  */
        !          1949: 
        !          1950: #define ASM_OPEN_PAREN "("
        !          1951: #define ASM_CLOSE_PAREN ")"
        !          1952: 
        !          1953: /* All HP assemblers use "!" to separate logical lines.  */
        !          1954: #define IS_ASM_LOGICAL_LINE_SEPARATOR(C) ((C) == '!')
        !          1955: 
        !          1956: /* Define results of standard character escape sequences.  */
        !          1957: #define TARGET_BELL 007
        !          1958: #define TARGET_BS 010
        !          1959: #define TARGET_TAB 011
        !          1960: #define TARGET_NEWLINE 012
        !          1961: #define TARGET_VT 013
        !          1962: #define TARGET_FF 014
        !          1963: #define TARGET_CR 015
        !          1964: 
        !          1965: #define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \
        !          1966:   ((CHAR) == '@' || (CHAR) == '#' || (CHAR) == '*' || (CHAR) == '^')
        !          1967: 
        !          1968: /* Print operand X (an rtx) in assembler syntax to file FILE.
        !          1969:    CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
        !          1970:    For `%' followed by punctuation, CODE is the punctuation and X is null.
        !          1971: 
        !          1972:    On the HP-PA, the CODE can be `r', meaning this is a register-only operand
        !          1973:    and an immediate zero should be represented as `r0'.
        !          1974: 
        !          1975:    Several % codes are defined:
        !          1976:    O an operation
        !          1977:    C compare conditions
        !          1978:    N extract conditions
        !          1979:    M modifier to handle preincrement addressing for memory refs.
        !          1980:    F modifier to handle preincrement addressing for fp memory refs */
        !          1981: 
        !          1982: #define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)
        !          1983: 
        !          1984: 
        !          1985: /* Print a memory address as an operand to reference that memory location.  */
        !          1986: 
        !          1987: #define PRINT_OPERAND_ADDRESS(FILE, ADDR)  \
        !          1988: { register rtx addr = ADDR;                                            \
        !          1989:   register rtx base;                                                   \
        !          1990:   int offset;                                                          \
        !          1991:   switch (GET_CODE (addr))                                             \
        !          1992:     {                                                                  \
        !          1993:     case REG:                                                          \
        !          1994:       fprintf (FILE, "0(0,%s)", reg_names [REGNO (addr)]);             \
        !          1995:       break;                                                           \
        !          1996:     case PLUS:                                                         \
        !          1997:       if (GET_CODE (XEXP (addr, 0)) == CONST_INT)                      \
        !          1998:        offset = INTVAL (XEXP (addr, 0)), base = XEXP (addr, 1);        \
        !          1999:       else if (GET_CODE (XEXP (addr, 1)) == CONST_INT)                 \
        !          2000:        offset = INTVAL (XEXP (addr, 1)), base = XEXP (addr, 0);        \
        !          2001:       else                                                             \
        !          2002:        abort ();                                                       \
        !          2003:       fprintf (FILE, "%d(0,%s)", offset, reg_names [REGNO (base)]);    \
        !          2004:       break;                                                           \
        !          2005:     case LO_SUM:                                                       \
        !          2006:       fputs ("R'", FILE);                                              \
        !          2007:       output_global_address (FILE, XEXP (addr, 1));                    \
        !          2008:       fputs ("(", FILE);                                               \
        !          2009:       output_operand (XEXP (addr, 0), 0);                              \
        !          2010:       fputs (")", FILE);                                               \
        !          2011:       break;                                                           \
        !          2012:     case CONST_INT:                                                    \
        !          2013:       fprintf (FILE, "%d(0,0)", INTVAL (addr));                                \
        !          2014:       break;                                                           \
        !          2015:     default:                                                           \
        !          2016:       output_addr_const (FILE, addr);                                  \
        !          2017:     }}
        !          2018: 
        !          2019: 
        !          2020: /* Define functions in pa.c and used in insn-output.c.  */
        !          2021: 
        !          2022: extern char *output_and ();
        !          2023: extern char *output_ior ();
        !          2024: extern char *output_move_double ();
        !          2025: extern char *output_fp_move_double ();
        !          2026: extern char *output_block_move ();
        !          2027: extern char *output_cbranch ();
        !          2028: extern char *output_bb ();
        !          2029: extern char *output_dbra ();
        !          2030: extern char *output_movb ();
        !          2031: extern char *output_return ();
        !          2032: extern char *output_call ();
        !          2033: extern char *output_mul_insn ();
        !          2034: extern char *output_div_insn ();
        !          2035: extern char *output_mod_insn ();
        !          2036: extern char *singlemove_string ();
        !          2037: extern void output_arg_descriptor ();
        !          2038: extern void output_global_address ();
        !          2039: extern struct rtx_def *legitimize_pic_address ();
        !          2040: extern struct rtx_def *gen_cmp_fp ();
        !          2041: extern void hppa_encode_label ();
        !          2042: 
        !          2043: extern struct rtx_def *hppa_save_pic_table_rtx;
        !          2044: 
        !          2045: #if 0
        !          2046: #define PREDICATE_CODES \
        !          2047:   {"reg_or_0_operand", {SUBREG, REG, CONST_INT}},                      \
        !          2048:   {"reg_or_cint_move_operand", {SUBREG, REG, CONST_INT}},              \
        !          2049:   {"arith_operand", {SUBREG, REG, CONST_INT}},                         \
        !          2050:   {"arith32_operand", {SUBREG, REG, CONST_INT}},                       \
        !          2051:   {"arith11_operand", {SUBREG, REG, CONST_INT}},                       \
        !          2052:   {"arith5_operand", {SUBREG, REG, CONST_INT}},                                \
        !          2053:   {"pre_cint_operand", {CONST_INT}},                                   \
        !          2054:   {"post_cint_operand", {CONST_INT}},                                  \
        !          2055:   {"int5_operand", {CONST_INT}},                                       \
        !          2056:   {"uint5_operand", {CONST_INT}},                                      \
        !          2057:   {"uint32_operand", {CONST_INT}},                                     \
        !          2058:   {"int11_operand", {CONST_INT}},                                      \
        !          2059:   {"and_operand", {SUBREG, REG, CONST_INT}},                           \
        !          2060:   {"ior_operand", {CONST_INT}},                                                \
        !          2061:   {"lhs_lshift_operand", {SUBREG, REG, CONST_INT}},                    \
        !          2062:   {"lhs_lshift_cint_operand", {CONST_INT}},                            \
        !          2063:   {"plus_xor_ior_operator", {PLUS, XOR, IOR}},                         \
        !          2064:   {"shadd_operand", {CONST_INT}},                                      \
        !          2065:   {"eq_neq_comparison_operator", {EQ, NE}},                            \
        !          2066:   {"movb_comparison_operator", {EQ, NE, LT, GE}},                      \
        !          2067:   {"pc_or_label_operand", {LABEL_REF, PC}},                            \
        !          2068:   {"symbolic_operand", {SYMBOL_REF, LABEL_REF, CONST}},                        \
        !          2069:   {"reg_or_nonsymb_mem_operand", {REG, SUBREG, MEM}},                  \
        !          2070:   {"move_operand", {REG, SUBREG, CONST_INT, MEM}},                     \
        !          2071:   {"pic_operand", {REG, SUBREG, CONST_INT, SYMBOL_REF, LABEL_REF,      \
        !          2072:                   CONST, HIGH, PC}},   /* No clue */                   \
        !          2073:   {"function_label_operand", {SYMBOL_REF}},                            \
        !          2074:   {"reg_or_0_or_nonsymb_mem_operand", {REG, SUBREG, CONST_INT, MEM}},  \
        !          2075:   {"div_operand", {REG, CONST_INT}},                                   \
        !          2076:   {"call_operand_address", {LABEL_REF, SYMBOL_REF, CONST_INT,          \
        !          2077:                            CONST, HIGH}},
        !          2078: #endif

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