* pa.h (DEFAULT_GDB_EXTENSIONS): GDB extensions are on by default.

[gcc.git] / gcc / config / pa / pa.h

/* Definitions of target machine for GNU compiler, for the HP Spectrum.
   Copyright (C) 1992, 1993 Free Software Foundation, Inc.
   Contributed by Michael Tiemann (tiemann@mcc.com)
   and Tim Moore (moore@defmacro.cs.utah.edu) of the Center for
   Software Science at the University of Utah.

This file is part of GNU CC.

GNU CC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 1, or (at your option)
any later version.

GNU CC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING.  If not, write to
the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.  */

enum cmp_type                           /* comparison type */
{
  CMP_SI,                               /* compare integers */
  CMP_SF,                               /* compare single precision floats */
  CMP_DF,                               /* compare double precision floats */
  CMP_MAX                               /* max comparison type */
};

/* Print subsidiary information on the compiler version in use.  */

#define TARGET_VERSION fprintf (stderr, " (hppa)");

/* Run-time compilation parameters selecting different hardware subsets.  */

extern int target_flags;

/* compile code for HP-PA 1.1 ("Snake") */

#define TARGET_SNAKE (target_flags & 1)

/* Disable all FP registers (they all become fixed).  This may be necessary
   for compiling kernels which perform lazy context switching of FP regs.
   Note if you use this option and try to perform floating point operations 
   the compiler will abort!  */

#define TARGET_DISABLE_FPREGS (target_flags & 2)

/* Force gcc to only use instructions which are safe when compiling kernels.
   Specifically, avoid using add instructions with dp (r27) as an argument.
   Use addil instructions instead.  Doing so avoids a nasty bug in the 
   HPUX linker.  When HP fixes their linker take this option out.  */

#define TARGET_KERNEL (target_flags & 4)

/* Allow unconditional jumps in the delay slots of call instructions.  */
#define TARGET_JUMP_IN_DELAY (target_flags & 8)

/* Force all function calls to indirect addressing via a register.  This
   avoids lossage when the function is very far away from the current PC.

   ??? What about simple jumps, they can suffer from the same problem.  
   Would require significant surgery in pa.md.  */

#define TARGET_LONG_CALLS (target_flags & 16)

/* Disable indexed addressing modes.  */

#define TARGET_DISABLE_INDEXING (target_flags & 32)

/* Force a colon to be tacked onto the end of local and global
   labels.  An option because the HP assembler croaks on them.   */

#define TARGET_TRAILING_COLON (target_flags & 64)

/* Emit directives only understood by GAS.  This allows parameter
   relocations to work for static functions.  There is no way
   to make them work the HP assembler at this time.  */

#define TARGET_GAS (target_flags & 128)

/* Macro to define tables used to set the flags.
   This is a list in braces of pairs in braces,
   each pair being { "NAME", VALUE }
   where VALUE is the bits to set or minus the bits to clear.
   An empty string NAME is used to identify the default VALUE.  */

#define TARGET_SWITCHES \
  {{"snake", 1},                \
   {"nosnake", -1},             \
   {"pa-risc-1-0", -1},         \
   {"pa-risc-1-1", 1},          \
   {"disable-fpregs", 2},       \
   {"no-disable-fpregs", 2},    \
   {"kernel", 4},               \
   {"no-kernel", -4},           \
   {"jump-in-delay", 8},        \
   {"no-jump-in-delay", -8},    \
   {"long-calls", 16},          \
   {"no-long-calls", -16},      \
   {"disable-indexing", 32},    \
   {"no-disable-indexing", -32},\
   {"trailing-colon", 64},      \
   {"no-trailing-colon", -64},  \
   {"gas", 128},                \
   {"no-gas", -128},            \
   { "", TARGET_DEFAULT}}

#ifndef TARGET_DEFAULT
#define TARGET_DEFAULT 128              /* TARGET_GAS + TARGET_JUMP_IN_DELAY */
#endif

#define DBX_DEBUGGING_INFO
#define DEFAULT_GDB_EXTENSIONS 1

#if (TARGET_DEFAULT & 1) == 0
#define CPP_SPEC "%{msnake:-D__hp9000s700 -D_PA_RISC1_1}\
 %{mpa-risc-1-1:-D__hp9000s700 -D_PA_RISC1_1}"
#else
#define CPP_SPEC "%{!mpa-risc-1-0:%{!mnosnake:-D__hp9000s700 -D_PA_RISC1_1}}"
#endif

/* Defines for a K&R CC */

#define CC1_SPEC "%{pg:} %{p:}"
  
#define LINK_SPEC "-u main"

/* Allow $ in identifiers.  */
#define DOLLARS_IN_IDENTIFIERS 2

/* Make gcc agree with <machine/ansi.h> */

#define SIZE_TYPE "unsigned int"
#define PTRDIFF_TYPE "int"
#define WCHAR_TYPE "short unsigned int"
#define WCHAR_TYPE_SIZE 16

/* Sometimes certain combinations of command options do not make sense
   on a particular target machine.  You can define a macro
   `OVERRIDE_OPTIONS' to take account of this.  This macro, if
   defined, is executed once just after all the command options have
   been parsed.

   On the PA, it is used to explicitly warn the user that -fpic and -fPIC
   do not work.  */

#define OVERRIDE_OPTIONS \
{                                                               \
  if (flag_pic != 0)                                            \
    warning ("-fpic and -fPIC are not supported on the PA.");   \
}

/* Omit frame pointer at high optimization levels.  */
  
#define OPTIMIZATION_OPTIONS(OPTIMIZE) \
{                                                               \
  if (OPTIMIZE >= 2)                                            \
    flag_omit_frame_pointer = 1;                                \
}

/* Names to predefine in the preprocessor for this target machine.  */

#define CPP_PREDEFINES "-Dhppa -Dhp9000s800 -D__hp9000s800 -Dhp9k8 -Dunix -D_HPUX_SOURCE -Dhp9000 -Dhp800 -Dspectrum -DREVARGV"
\f
/* target machine storage layout */

/* Define this if most significant bit is lowest numbered
   in instructions that operate on numbered bit-fields.  */
#define BITS_BIG_ENDIAN 1

/* Define this if most significant byte of a word is the lowest numbered.  */
/* That is true on the HP-PA.  */
#define BYTES_BIG_ENDIAN 1

/* Define this if most significant word of a multiword number is lowest
   numbered.  */
/* For the HP-PA we can decide arbitrarily
   since there are no machine instructions for them.  */
#define WORDS_BIG_ENDIAN 1

/* number of bits in an addressable storage unit */
#define BITS_PER_UNIT 8

/* Width in bits of a "word", which is the contents of a machine register.
   Note that this is not necessarily the width of data type `int';
   if using 16-bit ints on a 68000, this would still be 32.
   But on a machine with 16-bit registers, this would be 16.  */
#define BITS_PER_WORD 32

/* Width of a word, in units (bytes).  */
#define UNITS_PER_WORD 4

/* Width in bits of a pointer.
   See also the macro `Pmode' defined below.  */
#define POINTER_SIZE 32

/* Allocation boundary (in *bits*) for storing arguments in argument list.  */
#define PARM_BOUNDARY 32

/* Largest alignment required for any stack parameter, in bits.
   Don't define this if it is equal to PARM_BOUNDARY */
#define MAX_PARM_BOUNDARY 64

/* Boundary (in *bits*) on which stack pointer should be aligned.  */
#define STACK_BOUNDARY (TARGET_SNAKE ? 512 : 64)

/* Allocation boundary (in *bits*) for the code of a function.  */
#define FUNCTION_BOUNDARY 32

/* Alignment of field after `int : 0' in a structure.  */
#define EMPTY_FIELD_BOUNDARY 32

/* Every structure's size must be a multiple of this.  */
#define STRUCTURE_SIZE_BOUNDARY 8

/* A bitfield declared as `int' forces `int' alignment for the struct.  */
#define PCC_BITFIELD_TYPE_MATTERS 1

/* No data type wants to be aligned rounder than this.  */
#define BIGGEST_ALIGNMENT 64

/* Get around hp-ux assembler bug, and make strcpy of constants fast. */
#define CONSTANT_ALIGNMENT(CODE, TYPEALIGN) \
  ((TYPEALIGN) < 32 ? 32 : (TYPEALIGN))

/* Make arrays of chars word-aligned for the same reasons.  */
#define DATA_ALIGNMENT(TYPE, ALIGN)             \
  (TREE_CODE (TYPE) == ARRAY_TYPE               \
   && TYPE_MODE (TREE_TYPE (TYPE)) == QImode    \
   && (ALIGN) < BITS_PER_WORD ? BITS_PER_WORD : (ALIGN))


/* Set this nonzero if move instructions will actually fail to work
   when given unaligned data.  */
#define STRICT_ALIGNMENT 1

/* Generate calls to memcpy, memcmp and memset.  */
#define TARGET_MEM_FUNCTIONS
\f
/* Standard register usage.  */

/* Number of actual hardware registers.
   The hardware registers are assigned numbers for the compiler
   from 0 to just below FIRST_PSEUDO_REGISTER.
   All registers that the compiler knows about must be given numbers,
   even those that are not normally considered general registers.

   HP-PA 1.0 has 32 fullword registers and 16 floating point
   registers. The floating point registers hold either word or double
   word values.
   
   16 additional registers are reserved.
   
   HP-PA 1.1 has 32 fullword registers and 32 floating point
   registers. However, the floating point registers behave
   differently: the left and right halves of registers are addressable
   as 32 bit registers. So, we will set things up like the 68k which
   has different fp units: define separate register sets for the 1.0
   and 1.1 fp units. */

#define FIRST_PSEUDO_REGISTER 101  /* 32 + 12 1.0 regs + 56 1.1 regs + */
                                   /* 1 shift reg */

/* 1 for registers that have pervasive standard uses
   and are not available for the register allocator.

   On the HP-PA, these are:
   Reg 0        = 0 (hardware). However, 0 is used for condition code,
                  so is not fixed.
   Reg 1        = ADDIL target/Temporary (hardware).
   Reg 2        = Return Pointer
   Reg 3        = Preserved Register (Gnu).  Frame Pointer (> 8k frames HP.)
   Reg 4        = Frame Pointer (Gnu)
   Reg 5-18     = Preserved Registers
   Reg 19       = Linkage Table Register in HPUX 8.0 shared library scheme.
   Reg 20-22    = Temporary Registers
   Reg 23-26    = Temporary/Parameter Registers
   Reg 27       = Global Data Pointer (hp)
   Reg 28       = Temporary/???/Return Value register
   Reg 29       = Temporary/Static Chain/Return Value register
   Reg 30       = stack pointer
   Reg 31       = Temporary/Millicode Return Pointer (hp)

   Freg 0-3     = Status Registers       -- Not known to the compiler.
   Freg 4-7     = Arguments/Return Value
   Freg 8-11    = Temporary Registers
   Freg 12-15   = Preserved Registers

   Freg 16-31   = Reserved

   On the Snake, fp regs are

   Freg 0-3     = Status Registers      -- Not known to the compiler.
   Freg 4L-7R   = Arguments/Return Value
   Freg 8L-11R  = Temporary Registers
   Freg 12L-21R = Preserved Registers
   Freg 22L-31R = Temporary Registers
   

*/

#define FIXED_REGISTERS  \
 {0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 1, 0, 0, 1, 0, \
  /* 1.0 fp registers */ \
  0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  /* 1.1 fp registers */ \
  0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  0}

/* 1 for registers not available across function calls.
   These must include the FIXED_REGISTERS and also any
   registers that can be used without being saved.
   The latter must include the registers where values are returned
   and the register where structure-value addresses are passed.
   Aside from that, you can include as many other registers as you like.  */
#define CALL_USED_REGISTERS  \
 {1, 1, 1, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 1, 1, 1, 1, 1, \
  1, 1, 1, 1, 1, 1, 1, 1, \
  /* 1.0 fp registers */ \
  1, 1, 1, 1, \
  1, 1, 1, 1, 0, 0, 0, 0, \
  /* 1.1 fp registers */ \
  1, 1, 1, 1, 1, 1, 1, 1, \
  1, 1, 1, 1, 1, 1, 1, 1, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 0, 0, 0, 0, \
  0, 0, 0, 0, 1, 1, 1, 1, \
  1, 1, 1, 1, 1, 1, 1, 1, \
  1, 1, 1, 1, 1, 1, 1, 1, \
  1}    

/* Make sure everything's fine if we *don't* have a given processor.
   This assumes that putting a register in fixed_regs will keep the
   compiler's mitts completely off it.  We don't bother to zero it out
   of register classes.   */

#define CONDITIONAL_REGISTER_USAGE \
{                                               \
  int i;                                        \
  HARD_REG_SET x;                               \
  if (!TARGET_SNAKE)                            \
    {                                           \
      COPY_HARD_REG_SET (x, reg_class_contents[(int)SNAKE_FP_REGS]);\
      for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \
       if (TEST_HARD_REG_BIT (x, i))            \
        fixed_regs[i] = call_used_regs[i] = 1;  \
    }                                           \
  else if (TARGET_DISABLE_FPREGS)               \
    {                                           \
      COPY_HARD_REG_SET (x, reg_class_contents[(int)FP_REGS]);\
      for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \
       if (TEST_HARD_REG_BIT (x, i))            \
        fixed_regs[i] = call_used_regs[i] = 1;  \
      COPY_HARD_REG_SET (x, reg_class_contents[(int)SNAKE_FP_REGS]);\
      for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \
       if (TEST_HARD_REG_BIT (x, i))            \
        fixed_regs[i] = call_used_regs[i] = 1;  \
    }                                           \
  else                                          \
    {                                           \
      COPY_HARD_REG_SET (x, reg_class_contents[(int)FP_REGS]); \
      for (i = 0; i < FIRST_PSEUDO_REGISTER; i++ ) \
       if (TEST_HARD_REG_BIT (x, i))            \
        fixed_regs[i] = call_used_regs[i] = 1;  \
    }                                           \
  if (flag_pic)                                 \
    fixed_regs[PIC_OFFSET_TABLE_REGNUM] = 1;    \
}

/* Allocated the call used registers first.  This should minimize
   the number of registers that need to be saved (as call used
   registers will generally not be allocated across a call).

   Experimentation has shown slightly better results by allocating
   FP registers first.  */

#define REG_ALLOC_ORDER \
  /* 1.0 caller-saved fp regs.  */      \
 {36, 37, 38, 39, 32, 33, 34, 35,       \
  /* 1.1 caller-saved fp regs.  */      \
  52, 53, 54, 55, 56, 57, 58, 59,       \
  80, 81, 82, 83, 84, 85, 86, 87,       \
  88, 89, 90, 91, 92, 93, 94, 95,       \
  96, 97, 98, 99,                       \
  44, 45, 46, 47, 48, 49, 50, 51,       \
  /* caller-saved general regs.  */     \
  19, 20, 21, 22, 23, 24, 25, 26,       \
  27, 28, 29, 31,  2,                   \
  /* 1.0 callee-saved fp regs.  */      \
  40, 41, 42, 43,                       \
  /* 1.1 callee-saved fp regs.  */      \
  60, 61, 62, 63, 64, 65, 66, 67,       \
  68, 69, 70, 71, 72, 73, 74, 75,       \
  76, 77, 78, 79,                       \
  /* callee-saved general regs.  */     \
   3,  4,  5,  6,  7,  8,  9, 10,       \
  11, 12, 13, 14, 15, 16, 17, 18,       \
  /* special registers.  */             \
   1, 30,  0, 100}


/* Return number of consecutive hard regs needed starting at reg REGNO
   to hold something of mode MODE.
   This is ordinarily the length in words of a value of mode MODE
   but can be less for certain modes in special long registers.

   On the HP-PA, ordinary registers hold 32 bits worth;
   The floating point registers are 64 bits wide. Snake fp regs are 32
   bits wide */
#define HARD_REGNO_NREGS(REGNO, MODE)   \
  (((REGNO) < 32 || (REGNO) >= 44)      \
   ? ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD) : 1)

/* Value is 1 if hard register REGNO can hold a value of machine-mode MODE.
   On the HP-PA, the cpu registers can hold any mode.  We
   force this to be an even register is it cannot hold the full mode.  */
#define HARD_REGNO_MODE_OK(REGNO, MODE) \
  ((REGNO) == 0 ? (MODE) == CCmode || (MODE) == CCFPmode                \
   : (REGNO) < 32 ? ((GET_MODE_SIZE (MODE) <= 4) ? 1 : ((REGNO) & 1) == 0)\
   : (REGNO) < 44 ? (GET_MODE_SIZE (MODE) <= 4                          \
                     || (GET_MODE_SIZE (MODE) > 4                       \
                         && GET_MODE_CLASS (MODE) == MODE_FLOAT))       \
   : (GET_MODE_SIZE (MODE) > 4 ? ((REGNO) & 1) == 0                     \
      : 1))

/* Value is 1 if it is a good idea to tie two pseudo registers
   when one has mode MODE1 and one has mode MODE2.
   If HARD_REGNO_MODE_OK could produce different values for MODE1 and MODE2,
   for any hard reg, then this must be 0 for correct output.  */
#define MODES_TIEABLE_P(MODE1, MODE2) \
  (GET_MODE_CLASS (MODE1) == GET_MODE_CLASS (MODE2))

/* Specify the registers used for certain standard purposes.
   The values of these macros are register numbers.  */

/* The HP-PA pc isn't overloaded on a register that the compiler knows about.  */
/* #define PC_REGNUM  */

/* Register to use for pushing function arguments.  */
#define STACK_POINTER_REGNUM 30

/* Base register for access to local variables of the function.  */
#define FRAME_POINTER_REGNUM 4

/* Value should be nonzero if functions must have frame pointers. */
#define FRAME_POINTER_REQUIRED (current_function_calls_alloca)
  

/* C statement to store the difference between the frame pointer
   and the stack pointer values immediately after the function prologue.

   Note, we always pretend that this is a leaf function because if
   it's not, there's no point in trying to eliminate the
   frame pointer.  If it is a leaf function, we guessed right!  */
#define INITIAL_FRAME_POINTER_OFFSET(VAR) \
  do {(VAR) = - compute_frame_size (get_frame_size (), 0);} while (0)

/* Base register for access to arguments of the function.  */
#define ARG_POINTER_REGNUM 4

/* Register in which static-chain is passed to a function.  */
/* ??? */
#define STATIC_CHAIN_REGNUM 29

/* Register which holds offset table for position-independent
   data references.  */

#define PIC_OFFSET_TABLE_REGNUM 19

#define INITIALIZE_PIC initialize_pic ()
#define FINALIZE_PIC finalize_pic ()

/* Register in which address to store a structure value
   is passed to a function.  */
#define STRUCT_VALUE_REGNUM 28
\f
/* Define the classes of registers for register constraints in the
   machine description.  Also define ranges of constants.

   One of the classes must always be named ALL_REGS and include all hard regs.
   If there is more than one class, another class must be named NO_REGS
   and contain no registers.

   The name GENERAL_REGS must be the name of a class (or an alias for
   another name such as ALL_REGS).  This is the class of registers
   that is allowed by "g" or "r" in a register constraint.
   Also, registers outside this class are allocated only when
   instructions express preferences for them.

   The classes must be numbered in nondecreasing order; that is,
   a larger-numbered class must never be contained completely
   in a smaller-numbered class.

   For any two classes, it is very desirable that there be another
   class that represents their union.  */

  /* The HP-PA has four kinds of registers: general regs, 1.0 fp regs,
     1.1 fp regs, and the high 1.1 fp regs, to which the operands of
     fmpyadd and fmpysub are restricted.

     FP_OR_SNAKE_FP_REGS is for reload_{in,out}di only and isn't used
     anywhere else.  */

enum reg_class { NO_REGS, R1_REGS, GENERAL_REGS, FP_REGS, GENERAL_OR_FP_REGS,
  HI_SNAKE_FP_REGS, SNAKE_FP_REGS, GENERAL_OR_SNAKE_FP_REGS,
  FP_OR_SNAKE_FP_REGS, NON_SHIFT_REGS, SHIFT_REGS, ALL_REGS, LIM_REG_CLASSES}; 

#define N_REG_CLASSES (int) LIM_REG_CLASSES

/* Give names of register classes as strings for dump file.   */

#define REG_CLASS_NAMES \
  { "NO_REGS", "R1_REGS", "GENERAL_REGS", "FP_REGS", "GENERAL_OR_FP_REGS",\
    "HI_SNAKE_FP_REGS", "SNAKE_FP_REGS", "GENERAL_OR_SNAKE_FP_REGS",\
    "FP_OR_SNAKE_FP_REGS", "NON_SHIFT_REGS", "SHIFT_REGS", "ALL_REGS"}

/* Define which registers fit in which classes.
   This is an initializer for a vector of HARD_REG_SET
   of length N_REG_CLASSES. Register 0, the "condition code" register,
   is in no class. */

#define REG_CLASS_CONTENTS      \
{ {0, 0, 0, 0},                 /* NO_REGS */           \
  {0x2, 0, 0, 0},               /* R1_REGS */           \
  {-2, 0, 0, 0},                /* GENERAL_REGS */      \
  {0, 0xfff, 0, 0},             /* FP_REGS */           \
  {-2, 0xfff, 0, 0},            /* GENERAL_OR_FP_REGS */\
  {0, 0, 0xfffffff0, 0xf},      /* HI_SNAKE_FP_REGS */  \
  {0, 0xfffff000, ~0, 0xf},     /* SNAKE_FP_REGS */     \
  {-2, 0xfffff000, ~0, 0xf},    /* GENERAL_OR_SNAKE_FP_REGS */\
  {0, ~0, ~0, 0xf},             /* FP_OR_SNAKE_FP_REGS */\
  {-2, ~0, ~0, ~0x10},          /* NON_SHIFT_REGS */    \
  {0, 0, 0, 0x10},              /* SHIFT_REGS */        \
  {-2, ~0, ~0, 0x1f}}           /* ALL_REGS */

/* The same information, inverted:
   Return the class number of the smallest class containing
   reg number REGNO.  This could be a conditional expression
   or could index an array.  */

#define REGNO_REG_CLASS(REGNO)          \
  ((REGNO) == 0 ? NO_REGS               \
   : (REGNO) == 1 ? R1_REGS             \
   : (REGNO) < 32 ? GENERAL_REGS        \
   : (REGNO) < 44 ? FP_REGS             \
   : (REGNO) < 68 ? SNAKE_FP_REGS       \
   : (REGNO) < 100 ? HI_SNAKE_FP_REGS   \
   : SHIFT_REGS)

/* The class value for index registers, and the one for base regs.  */
#define INDEX_REG_CLASS GENERAL_REGS
#define BASE_REG_CLASS GENERAL_REGS

#define FP_REG_CLASS_P(CLASS) \
  (CLASS == FP_REGS || CLASS == SNAKE_FP_REGS || CLASS == HI_SNAKE_FP_REGS)

/* Get reg_class from a letter such as appears in the machine description.
   Note 'Z' is not the same as 'r' since SHIFT_REGS is not part of 
   GENERAL_REGS.  */

#define REG_CLASS_FROM_LETTER(C) \
  ((C) == 'f' ? (!TARGET_SNAKE ? FP_REGS : NO_REGS) :           \
   ((C) == 'x' ? (TARGET_SNAKE ? SNAKE_FP_REGS : NO_REGS) :     \
    ((C) == 'y' ? (TARGET_SNAKE ? HI_SNAKE_FP_REGS : NO_REGS) : \
     ((C) == 'q' ? SHIFT_REGS :                                 \
      ((C) == 'a' ? R1_REGS :                                   \
       ((C) == 'z' ? FP_OR_SNAKE_FP_REGS :                      \
        ((C) == 'Z' ? ALL_REGS : NO_REGS)))))))

/* The letters I, J, K, L and M in a register constraint string
   can be used to stand for particular ranges of immediate operands.
   This macro defines what the ranges are.
   C is the letter, and VALUE is a constant value.
   Return 1 if VALUE is in the range specified by C.

   `I' is used for the 11 bit constants.
   `J' is used for the 14 bit constants.
   `K' is used for values that can be moved with a zdepi insn.
   `L' is used for the 5 bit constants.
   `M' is used for 0.
   `N' is used for values with the least significant 11 bits equal to zero.
   `O' is used for numbers n such that n+1 is a power of 2.
   */

#define CONST_OK_FOR_LETTER_P(VALUE, C)  \
  ((C) == 'I' ? VAL_11_BITS_P (VALUE)                           \
   : (C) == 'J' ? VAL_14_BITS_P (VALUE)                         \
   : (C) == 'K' ? zdepi_cint_p (VALUE)                          \
   : (C) == 'L' ? VAL_5_BITS_P (VALUE)                          \
   : (C) == 'M' ? (VALUE) == 0                                  \
   : (C) == 'N' ? ((VALUE) & 0x7ff) == 0                        \
   : (C) == 'O' ? (((VALUE) & ((VALUE) + 1)) == 0)              \
   : (C) == 'P' ? and_mask_p (VALUE)                            \
   : 0)

/* Similar, but for floating or large integer constants, and defining letters
   G and H.   Here VALUE is the CONST_DOUBLE rtx itself.

   For PA, `G' is the floating-point constant zero.  `H' is undefined.  */

#define CONST_DOUBLE_OK_FOR_LETTER_P(VALUE, C)                          \
  ((C) == 'G' ? (GET_MODE_CLASS (GET_MODE (VALUE)) == MODE_FLOAT        \
                 && (VALUE) == CONST0_RTX (GET_MODE (VALUE)))           \
   : 0)

/* Given an rtx X being reloaded into a reg required to be
   in class CLASS, return the class of reg to actually use.
   In general this is just CLASS; but on some machines
   in some cases it is preferable to use a more restrictive class.  */
#define PREFERRED_RELOAD_CLASS(X,CLASS) (CLASS)

/* Return the register class of a scratch register needed to copy IN into
   or out of a register in CLASS in MODE.  If it can be done directly,
   NO_REGS is returned.  */

#define SECONDARY_RELOAD_CLASS(CLASS,MODE,IN) \
  secondary_reload_class (CLASS, MODE, IN)

/* On the PA it is not possible to directly move data between 
   GENERAL_REGS and FP_REGS.  */
#define SECONDARY_MEMORY_NEEDED(CLASS1, CLASS2, MODE)  \
  ((FP_REG_CLASS_P (CLASS1) && ! FP_REG_CLASS_P (CLASS2))       \
   || (! FP_REG_CLASS_P (CLASS1) && FP_REG_CLASS_P (CLASS2)))

/* Return the stack location to use for secondary memory needed reloads.  */
#define SECONDARY_MEMORY_NEEDED_RTX(MODE) \
  gen_rtx (MEM, MODE, gen_rtx (PLUS, Pmode, stack_pointer_rtx, GEN_INT (-16)))

/* Return the maximum number of consecutive registers
   needed to represent mode MODE in a register of class CLASS.  */
#define CLASS_MAX_NREGS(CLASS, MODE)    \
  ((CLASS) == FP_REGS ? 1 : ((GET_MODE_SIZE (MODE) + UNITS_PER_WORD - 1) / UNITS_PER_WORD))
\f
/* Stack layout; function entry, exit and calling.  */

/* Define this if pushing a word on the stack
   makes the stack pointer a smaller address.  */
/* #define STACK_GROWS_DOWNWARD */

/* Believe it or not.  */
#define ARGS_GROW_DOWNWARD

/* Define this if the nominal address of the stack frame
   is at the high-address end of the local variables;
   that is, each additional local variable allocated
   goes at a more negative offset in the frame.  */
/* #define FRAME_GROWS_DOWNWARD */

/* Offset within stack frame to start allocating local variables at.
   If FRAME_GROWS_DOWNWARD, this is the offset to the END of the
   first local allocated.  Otherwise, it is the offset to the BEGINNING
   of the first local allocated.  */
#define STARTING_FRAME_OFFSET 8

/* If we generate an insn to push BYTES bytes,
   this says how many the stack pointer really advances by.
   On the HP-PA, don't define this because there are no push insns.  */
/*  #define PUSH_ROUNDING(BYTES) */

/* Offset of first parameter from the argument pointer register value.
   This value will be negated because the arguments grow down.
   Also note that on STACK_GROWS_UPWARD machines (such as this one)
   this is the distance from the frame pointer to the end of the first
   argument, not it's beginning.  To get the real offset of the first
   argument, the size of the argument must be added.

   ??? Have to check on this.*/

#define FIRST_PARM_OFFSET(FNDECL) -32 

/* Absolute value of offset from top-of-stack address to location to store the
   function parameter if it can't go in a register.
   Addresses for following parameters are computed relative to this one.  */
#define FIRST_PARM_CALLER_OFFSET(FNDECL) -32 


/* When a parameter is passed in a register, stack space is still
   allocated for it.  */
#define REG_PARM_STACK_SPACE(DECL) 16

/* Define this if the above stack space is to be considered part of the
   space allocated by the caller.  */
#define OUTGOING_REG_PARM_STACK_SPACE

/* Keep the stack pointer constant throughout the function.
   This is both an optimization and a necessity: longjmp
   doesn't behave itself when the stack pointer moves within
   the function!  */
#define ACCUMULATE_OUTGOING_ARGS
  
/* The weird HPPA calling conventions require a minimum of 48 bytes on 
   the stack: 16 bytes for register saves, and 32 bytes for magic.
   This is the difference between the logical top of stack and the
   actual sp. */ 
#define STACK_POINTER_OFFSET -32

#define STACK_DYNAMIC_OFFSET(FNDECL)    \
  ((STACK_POINTER_OFFSET) - current_function_outgoing_args_size)

/* Value is 1 if returning from a function call automatically
   pops the arguments described by the number-of-args field in the call.
   FUNTYPE is the data type of the function (as a tree),
   or for a library call it is an identifier node for the subroutine name.  */

#define RETURN_POPS_ARGS(FUNTYPE,SIZE) 0

/* Define how to find the value returned by a function.
   VALTYPE is the data type of the value (as a tree).
   If the precise function being called is known, FUNC is its FUNCTION_DECL;
   otherwise, FUNC is 0.  */

/* On the HP-PA the value is found in register(s) 28(-29), unless
   the mode is SF or DF. Then the value is returned in fr4 (32, ) */


#define FUNCTION_VALUE(VALTYPE, FUNC)  \
  gen_rtx (REG, TYPE_MODE (VALTYPE), ((TYPE_MODE (VALTYPE) == SFmode ||\
                                       TYPE_MODE (VALTYPE) == DFmode) ? \
                                      (TARGET_SNAKE ? 44 : 32) : 28))

/* Define how to find the value returned by a library function
   assuming the value has mode MODE.  */

#define LIBCALL_VALUE(MODE) \
  gen_rtx (REG, MODE, (MODE == SFmode || MODE == DFmode ?\
                       (TARGET_SNAKE ? 44 : 32) : 28))

/* 1 if N is a possible register number for a function value
   as seen by the caller.  */

#define FUNCTION_VALUE_REGNO_P(N) ((N) == 28 || (N) == (TARGET_SNAKE ? 44 : 32))

/* 1 if N is a possible register number for function argument passing.  */

#define FUNCTION_ARG_REGNO_P(N)                         \
  (((N) >= 23 && (N) <= 26)                             \
   || ((N) >= 32 && (N) <= 35 && ! TARGET_SNAKE)        \
   || ((N) >= 44 && (N) <= 51 && TARGET_SNAKE))
\f
/* Define a data type for recording info about an argument list
   during the scan of that argument list.  This data type should
   hold all necessary information about the function itself
   and about the args processed so far, enough to enable macros
   such as FUNCTION_ARG to determine where the next arg should go.

   On the HP-PA, this is a single integer, which is a number of words
   of arguments scanned so far (including the invisible argument,
   if any, which holds the structure-value-address).
   Thus 4 or more means all following args should go on the stack.  */

#define CUMULATIVE_ARGS int

/* Initialize a variable CUM of type CUMULATIVE_ARGS
   for a call to a function whose data type is FNTYPE.
   For a library call, FNTYPE is 0.
*/

#define INIT_CUMULATIVE_ARGS(CUM,FNTYPE,LIBNAME) ((CUM) = 0)

/* Figure out the size in words of the function argument. */

#define FUNCTION_ARG_SIZE(MODE, TYPE)   \
  ((((MODE) != BLKmode ? GET_MODE_SIZE (MODE) : int_size_in_bytes (TYPE))+3)/4)

/* Update the data in CUM to advance over an argument
   of mode MODE and data type TYPE.
   (TYPE is null for libcalls where that information may not be available.)  */

#define FUNCTION_ARG_ADVANCE(CUM, MODE, TYPE, NAMED)                    \
    (((((CUM) & 01) && (TYPE) != 0 && FUNCTION_ARG_SIZE(MODE, TYPE) > 1)\
      && (CUM)++), (CUM) += FUNCTION_ARG_SIZE(MODE, TYPE))

/* Determine where to put an argument to a function.
   Value is zero to push the argument on the stack,
   or a hard register in which to store the argument.

   MODE is the argument's machine mode.
   TYPE is the data type of the argument (as a tree).
    This is null for libcalls where that information may
    not be available.
   CUM is a variable of type CUMULATIVE_ARGS which gives info about
    the preceding args and about the function being called.
   NAMED is nonzero if this argument is a named parameter
    (otherwise it is an extra parameter matching an ellipsis).  */

/* On the HP-PA the first four words of args are normally in registers
   and the rest are pushed.  But any arg that won't entirely fit in regs
   is pushed.

   Arguments passed in registers are either 1 or 2 words long.

   The caller must make a distinction between calls to explicitly named
   functions and calls through pointers to functions -- the conventions
   are different!  Calls through pointers to functions only use general
   registers for the first four argument words.  */

#define FUNCTION_ARG_PADDING(MODE, TYPE) function_arg_padding ((MODE), (TYPE))

#define FUNCTION_ARG(CUM, MODE, TYPE, NAMED)                            \
  (4 >= ((CUM) + FUNCTION_ARG_SIZE ((MODE), (TYPE)))                    \
   ? gen_rtx (REG, (MODE),                                              \
              (FUNCTION_ARG_SIZE ((MODE), (TYPE)) > 1                   \
               ? ((! current_call_is_indirect                           \
                   && (MODE) == DFmode)                                 \
                  ? ((CUM) ? (TARGET_SNAKE ? 50 : 35)                   \
                     : (TARGET_SNAKE ? 46 : 33))                        \
                  : ((CUM) ? 23 : 25))                                  \
               : ((! current_call_is_indirect                           \
                   && (MODE) == SFmode)                                 \
                  ? (TARGET_SNAKE ? 44 + 2 * (CUM) : 32  + (CUM))       \
                  : (27 - (CUM) - FUNCTION_ARG_SIZE ((MODE), (TYPE))))))\
   : 0)

/* Define where a function finds its arguments.
   This would be different from FUNCTION_ARG if we had register windows.  */

#define FUNCTION_INCOMING_ARG(CUM, MODE, TYPE, NAMED)   \
  FUNCTION_ARG (CUM, MODE, TYPE, NAMED)

/* For an arg passed partly in registers and partly in memory,
   this is the number of registers used.
   For args passed entirely in registers or entirely in memory, zero.  */

#define FUNCTION_ARG_PARTIAL_NREGS(CUM, MODE, TYPE, NAMED) 0

/* If defined, a C expression that gives the alignment boundary, in
   bits, of an argument with the specified mode and type.  If it is
   not defined,  `PARM_BOUNDARY' is used for all arguments.  */

#define FUNCTION_ARG_BOUNDARY(MODE, TYPE)                               \
  (((TYPE) != 0)                                                        \
        ? ((TYPE_ALIGN(TYPE) <= PARM_BOUNDARY)                          \
                ? PARM_BOUNDARY                                         \
                : TYPE_ALIGN(TYPE))                                     \
        : ((GET_MODE_ALIGNMENT(MODE) <= PARM_BOUNDARY)                  \
                ? PARM_BOUNDARY                                         \
                : GET_MODE_ALIGNMENT(MODE)))

/* Arguments larger than eight bytes are passed by invisible reference */

#define FUNCTION_ARG_PASS_BY_REFERENCE(CUM, MODE, TYPE, NAMED)          \
  ((TYPE) && int_size_in_bytes (TYPE) > 8)
\f
extern struct rtx_def *hppa_compare_op0, *hppa_compare_op1;
extern enum cmp_type hppa_branch_type;

/* Output the label for a function definition.  */
#ifndef HP_FP_ARG_DESCRIPTOR_REVERSED
#define ASM_DOUBLE_ARG_DESCRIPTORS(FILE, ARG0, ARG1)    \
  do { fprintf (FILE, ",ARGW%d=FR", (ARG0));            \
       fprintf (FILE, ",ARGW%d=FU", (ARG1));} while (0)
#else
#define ASM_DOUBLE_ARG_DESCRIPTORS(FILE, ARG0, ARG1)    \
  do { fprintf (FILE, ",ARGW%d=FU", (ARG0));            \
       fprintf (FILE, ",ARGW%d=FR", (ARG1));} while (0)
#endif

#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL) \
    do { tree fntype = TREE_TYPE (TREE_TYPE (DECL));                    \
         tree tree_type = TREE_TYPE (DECL);                             \
         tree parm;                                                     \
         int i;                                                         \
         if (TREE_PUBLIC (DECL) || TARGET_GAS)                          \
           { extern int current_function_varargs;                       \
             if (TREE_PUBLIC (DECL))                                    \
               {                                                        \
                 fputs ("\t.EXPORT ", FILE);                            \
                 assemble_name (FILE, NAME);                            \
                 fputs (",ENTRY,PRIV_LEV=3", FILE);                     \
               }                                                        \
             else                                                       \
               {                                                        \
                 fputs ("\t.PARAM ", FILE);                             \
                 assemble_name (FILE, NAME);                            \
               }                                                        \
             for (parm = DECL_ARGUMENTS (DECL), i = 0; parm && i < 4;   \
                  parm = TREE_CHAIN (parm))                             \
               {                                                        \
                 if (TYPE_MODE (DECL_ARG_TYPE (parm)) == SFmode)        \
                   fprintf (FILE, ",ARGW%d=FR", i++);                   \
                 else if (TYPE_MODE (DECL_ARG_TYPE (parm)) == DFmode)   \
                   {                                                    \
                     if (i <= 2)                                        \
                       {                                                \
                         if (i == 1) i++;                               \
                         ASM_DOUBLE_ARG_DESCRIPTORS (FILE, i++, i++);   \
                       }                                                \
                     else                                               \
                       break;                                           \
                   }                                                    \
                 else                                                   \
                   {                                                    \
                     int arg_size =                                     \
                       FUNCTION_ARG_SIZE (TYPE_MODE (DECL_ARG_TYPE (parm)),\
                                          DECL_ARG_TYPE (parm));        \
                     if (arg_size == 2 && i <= 2)                       \
                       {                                                \
                         if (i == 1) i++;                               \
                         fprintf (FILE, ",ARGW%d=GR", i++);             \
                         fprintf (FILE, ",ARGW%d=GR", i++);             \
                       }                                                \
                     else if (arg_size == 1)                            \
                       fprintf (FILE, ",ARGW%d=GR", i++);               \
                     else                                               \
                       i += arg_size;                                   \
                   }                                                    \
               }                                                        \
             /* anonymous args */                                       \
             if ((TYPE_ARG_TYPES (tree_type) != 0                       \
                  && (TREE_VALUE (tree_last (TYPE_ARG_TYPES (tree_type)))\
                      != void_type_node))                               \
                 || current_function_varargs)                           \
               {                                                        \
                 for (; i < 4; i++)                                     \
                   fprintf (FILE, ",ARGW%d=GR", i);                     \
               }                                                        \
             if (TYPE_MODE (fntype) == DFmode)                          \
               fprintf (FILE, ",RTNVAL=FR");                            \
             else if (TYPE_MODE (fntype) == SFmode)                     \
               fprintf (FILE, ",RTNVAL=FU");                            \
             else if (fntype != void_type_node)                         \
               fprintf (FILE, ",RTNVAL=GR");                            \
             fputs ("\n", FILE);                                        \
           }                                                            \
         ASM_OUTPUT_LABEL (FILE, NAME);} while (0)

/* This macro generates the assembly code for function entry.
   FILE is a stdio stream to output the code to.
   SIZE is an int: how many units of temporary storage to allocate.
   Refer to the array `regs_ever_live' to determine which registers
   to save; `regs_ever_live[I]' is nonzero if register number I
   is ever used in the function.  This macro is responsible for
   knowing which registers should not be saved even if used.  */

/* On HP-PA, move-double insns between fpu and cpu need an 8-byte block
   of memory.  If any fpu reg is used in the function, we allocate
   such a block here, at the bottom of the frame, just in case it's needed.

   If this function is a leaf procedure, then we may choose not
   to do a "save" insn.  The decision about whether or not
   to do this is made in regclass.c.  */

#define FUNCTION_PROLOGUE(FILE, SIZE) \
  output_function_prologue (FILE, SIZE)

/* Output assembler code to FILE to increment profiler label # LABELNO
   for profiling a function entry.

   Because HPUX _mcount is so different, we actually emit the
   profiling code in function_prologue. This just stores LABELNO for
   that. */

#define PROFILE_BEFORE_PROLOGUE
#define FUNCTION_PROFILER(FILE, LABELNO) \
{ extern int hp_profile_labelno; hp_profile_labelno = (LABELNO);}

/* EXIT_IGNORE_STACK should be nonzero if, when returning from a function,
   the stack pointer does not matter.  The value is tested only in
   functions that have frame pointers.
   No definition is equivalent to always zero.  */

extern int may_call_alloca;
extern int current_function_pretend_args_size;

#define EXIT_IGNORE_STACK       \
 (get_frame_size () != 0        \
  || current_function_calls_alloca || current_function_outgoing_args_size)


/* This macro generates the assembly code for function exit,
   on machines that need it.  If FUNCTION_EPILOGUE is not defined
   then individual return instructions are generated for each
   return statement.  Args are same as for FUNCTION_PROLOGUE.

   The function epilogue should not depend on the current stack pointer!
   It should use the frame pointer only.  This is mandatory because
   of alloca; we also take advantage of it to omit stack adjustments
   before returning.  */

/* This declaration is needed due to traditional/ANSI
   incompatibilities which cannot be #ifdefed away
   because they occur inside of macros.  Sigh.  */
extern union tree_node *current_function_decl;

#define FUNCTION_EPILOGUE(FILE, SIZE)                   \
  output_function_epilogue (FILE, SIZE)

/* Output assembler code for a block containing the constant parts
   of a trampoline, leaving space for the variable parts.\

   The trampoline sets the static chain pointer to STATIC_CHAIN_REGNUM
   and then branches to the specified routine.

   This code template is copied from text segment to stack location
   and then patched with INITIALIZE_TRAMPOLINE to contain
   valid values, and then entered as a subroutine. 

   It is best to keep this as small as possible to avoid having to 
   flush multiple lines in the cache.  */

#define TRAMPOLINE_TEMPLATE(FILE) \
{                                               \
  fprintf (FILE, "\tldw 12(0,%%r22),%%r21\n");  \
  fprintf (FILE, "\tbe 0(4,%%r21)\n");          \
  fprintf (FILE, "\tldw 16(0,%%r22),%%r29\n");  \
  fprintf (FILE, "\t.word 0\n");                \
  fprintf (FILE, "\t.word 0\n");                \
}

/* Length in units of the trampoline for entering a nested function.

   Flush the cache entries corresponding to the first and last addresses
   of the trampoline.  This is necessary as the trampoline may cross two
   cache lines.  

   If the trampoline ever grows to > 32 bytes, then it will become
   necessary to hack on the cacheflush pattern in pa.md.  */

#define TRAMPOLINE_SIZE (5 * 4)

/* Emit RTL insns to initialize the variable parts of a trampoline.
   FNADDR is an RTX for the address of the function's pure code.
   CXT is an RTX for the static chain value for the function.

   Move the function address to the trampoline template at offset 12.
   Move the static chain value to trampoline template at offset 16.  */

#define INITIALIZE_TRAMPOLINE(TRAMP, FNADDR, CXT) \
{                                                               \
  rtx start_addr, end_addr, mem;                                \
                                                                \
  start_addr = memory_address (Pmode, plus_constant ((TRAMP), 12));\
  emit_move_insn (gen_rtx (MEM, Pmode, start_addr), (FNADDR));  \
  start_addr = memory_address (Pmode, plus_constant ((TRAMP), 16));\
  emit_move_insn (gen_rtx (MEM, Pmode, start_addr), (CXT));     \
  /* fdc and fic only use registers for the address to flush,   \
     they do not accept integer displacements.  */              \
  start_addr = force_reg (SImode, (TRAMP));                     \
  end_addr = force_reg (SImode, plus_constant ((TRAMP), 8));    \
  emit_insn (gen_cacheflush (start_addr, end_addr));            \
}

/* Emit code for a call to builtin_saveregs.  We must emit USE insns which
   reference the 4 integer arg registers and 4 fp arg registers.
   Ordinarily they are not call used registers, but they are for
   _builtin_saveregs, so we must make this explicit.  */

#define EXPAND_BUILTIN_SAVEREGS(ARGLIST) (rtx)hppa_builtin_saveregs (ARGLIST)

\f
/* Addressing modes, and classification of registers for them.  */

#define HAVE_POST_INCREMENT
#define HAVE_POST_DECREMENT

#define HAVE_PRE_DECREMENT
#define HAVE_PRE_INCREMENT

/* Macros to check register numbers against specific register classes.  */

/* These assume that REGNO is a hard or pseudo reg number.
   They give nonzero only if REGNO is a hard reg of the suitable class
   or a pseudo reg currently allocated to a suitable hard reg.
   Since they use reg_renumber, they are safe only once reg_renumber
   has been allocated, which happens in local-alloc.c.  */

#define REGNO_OK_FOR_INDEX_P(REGNO) \
  ((REGNO) && ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32))
#define REGNO_OK_FOR_BASE_P(REGNO)  \
  ((REGNO) && ((REGNO) < 32 || (unsigned) reg_renumber[REGNO] < 32))
#define REGNO_OK_FOR_FP_P(REGNO) \
  (((REGNO) >= 32 && (REGNO) <= 99)\
   || (reg_renumber[REGNO] >= 32 && reg_renumber[REGNO] <= 99))

/* Now macros that check whether X is a register and also,
   strictly, whether it is in a specified class.

   These macros are specific to the the HP-PA, and may be used only
   in code for printing assembler insns and in conditions for
   define_optimization.  */

/* 1 if X is an fp register.  */

#define FP_REG_P(X) (REG_P (X) && REGNO_OK_FOR_FP_P (REGNO (X)))
\f
/* Maximum number of registers that can appear in a valid memory address.  */

#define MAX_REGS_PER_ADDRESS 2

/* Recognize any constant value that is a valid address except
   for symbolic addresses.  We get better CSE by rejecting them
   here and allowing hppa_legitimize_address to break them up.  We
   use most of the constants accepted by CONSTANT_P, except CONST_DOUBLE.  */

#define CONSTANT_ADDRESS_P(X) \
  ((GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF             \
   || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST                \
   || GET_CODE (X) == HIGH)                                             \
   && (reload_in_progress || reload_completed || ! symbolic_expression_p (X)))

/* Include all constant integers and constant doubles, but not
   floating-point, except for floating-point zero. 

   Also reject function labels as reload can not handle them correctly
   right now.  (Fix this for 2.5).  */
#define LEGITIMATE_CONSTANT_P(X)                \
  ((GET_MODE_CLASS (GET_MODE (X)) != MODE_FLOAT \
    || (X) == CONST0_RTX (GET_MODE (X)))        \
   && ! function_label_operand (X, VOIDmode))

/* Subroutine for EXTRA_CONSTRAINT.  

   Return 1 iff OP is a pseudo which did not get a hard register and
   we are running the reload pass.  */

#define IS_RELOADING_PSEUDO_P(OP) \
  ((reload_in_progress                                  \
    && GET_CODE (OP) == REG                             \
    && REGNO (OP) >= FIRST_PSEUDO_REGISTER              \
    && reg_renumber [REGNO (OP)] < 0))

/* Optional extra constraints for this machine. Borrowed from sparc.h.

   For the HPPA, `Q' means that this is a memory operand but not a
   symbolic memory operand.  Note that an unassigned pseudo register
   is such a memory operand.  Needed because reload will generate
   these things in insns and then not re-recognize the insns, causing
   constrain_operands to fail.

   Also note `Q' accepts any memory operand during the reload pass.
   This includes out-of-range displacements in reg+d addressing. 
   This makes for better code.  (??? For 2.5 address this issue).

   `R' is unused.

   `S' is unused.

   `T' is for fp loads and stores.  */
#define EXTRA_CONSTRAINT(OP, C)                         \
  ((C) == 'Q' ?                                         \
   (IS_RELOADING_PSEUDO_P (OP)                          \
    || (GET_CODE (OP) == MEM                            \
        && reload_in_progress)                          \
    || (GET_CODE (OP) == MEM                            \
        && memory_address_p (GET_MODE (OP), XEXP (OP, 0))\
        && ! symbolic_memory_operand (OP, VOIDmode)))   \
   : ((C) == 'T' ?                                      \
      (GET_CODE (OP) == MEM                             \
       /* Using DFmode forces only short displacements  \
          to be recognized as valid in reg+d addresses.  */\
       && memory_address_p (DFmode, XEXP (OP, 0))) : 0))

/* The macros REG_OK_FOR..._P assume that the arg is a REG rtx
   and check its validity for a certain class.
   We have two alternate definitions for each of them.
   The usual definition accepts all pseudo regs; the other rejects
   them unless they have been allocated suitable hard regs.
   The symbol REG_OK_STRICT causes the latter definition to be used.

   Most source files want to accept pseudo regs in the hope that
   they will get allocated to the class that the insn wants them to be in.
   Source files for reload pass need to be strict.
   After reload, it makes no difference, since pseudo regs have
   been eliminated by then.  */

#ifndef REG_OK_STRICT

/* Nonzero if X is a hard reg that can be used as an index
   or if it is a pseudo reg.  */
#define REG_OK_FOR_INDEX_P(X) \
(REGNO (X) && (REGNO (X) < 32 || REGNO (X) >= FIRST_PSEUDO_REGISTER))
/* Nonzero if X is a hard reg that can be used as a base reg
   or if it is a pseudo reg.  */
#define REG_OK_FOR_BASE_P(X) \
(REGNO (X) && (REGNO (X) < 32 || REGNO (X) >= FIRST_PSEUDO_REGISTER))

#else

/* Nonzero if X is a hard reg that can be used as an index.  */
#define REG_OK_FOR_INDEX_P(X) REGNO_OK_FOR_INDEX_P (REGNO (X))
/* Nonzero if X is a hard reg that can be used as a base reg.  */
#define REG_OK_FOR_BASE_P(X) REGNO_OK_FOR_BASE_P (REGNO (X))

#endif
\f
/* GO_IF_LEGITIMATE_ADDRESS recognizes an RTL expression
   that is a valid memory address for an instruction.
   The MODE argument is the machine mode for the MEM expression
   that wants to use this address.

   On the HP-PA, the actual legitimate addresses must be
   REG+REG, REG+(REG*SCALE) or REG+SMALLINT.
   But we can treat a SYMBOL_REF as legitimate if it is part of this
   function's constant-pool, because such addresses can actually
   be output as REG+SMALLINT.  */

#define VAL_5_BITS_P(X) ((unsigned)(X) + 0x10 < 0x20)
#define INT_5_BITS(X) VAL_5_BITS_P (INTVAL (X))

#define VAL_U5_BITS_P(X) ((unsigned)(X) < 0x20)
#define INT_U5_BITS(X) VAL_U5_BITS_P (INTVAL (X))

#define VAL_11_BITS_P(X) ((unsigned)(X) + 0x400 < 0x800)
#define INT_11_BITS(X) VAL_11_BITS_P (INTVAL (X))

#define VAL_14_BITS_P(X) ((unsigned)(X) + 0x2000 < 0x4000)
#define INT_14_BITS(X) VAL_14_BITS_P (INTVAL (X))

#define GO_IF_LEGITIMATE_ADDRESS(MODE, X, ADDR)  \
{                                                       \
  if ((REG_P (X) && REG_OK_FOR_BASE_P (X))              \
      || ((GET_CODE (X) == PRE_DEC || GET_CODE (X) == POST_DEC          \
           || GET_CODE (X) == PRE_INC || GET_CODE (X) == POST_INC)      \
          && REG_P (XEXP (X, 0))                        \
          && REG_OK_FOR_BASE_P (XEXP (X, 0))))          \
    goto ADDR;                                          \
  else if (GET_CODE (X) == PLUS)                        \
    {                                                   \
      rtx base = 0, index;                              \
      if (flag_pic && XEXP (X, 0) == pic_offset_table_rtx)\
        {                                               \
          if (GET_CODE (XEXP (X, 1)) == REG             \
              && REG_OK_FOR_BASE_P (XEXP (X, 1)))       \
            goto ADDR;                                  \
          else if (flag_pic == 1                        \
                   && GET_CODE (XEXP (X, 1)) != REG     \
                   && GET_CODE (XEXP (X, 1)) != LO_SUM  \
                   && GET_CODE (XEXP (X, 1)) != MEM)    \
            goto ADDR;                                  \
        }                                               \
      else if (REG_P (XEXP (X, 0))                      \
          && REG_OK_FOR_BASE_P (XEXP (X, 0)))           \
        base = XEXP (X, 0), index = XEXP (X, 1);        \
      else if (REG_P (XEXP (X, 1))                      \
               && REG_OK_FOR_BASE_P (XEXP (X, 1)))      \
        base = XEXP (X, 1), index = XEXP (X, 0);        \
      if (base != 0)                                    \
        if (GET_CODE (index) == CONST_INT               \
            && ((INT_14_BITS (index) && (MODE) != SFmode && (MODE) != DFmode) \
                || INT_5_BITS (index)))                 \
          goto ADDR;                                    \
    }                                                   \
  else if (GET_CODE (X) == LO_SUM                       \
           && GET_CODE (XEXP (X, 0)) == REG             \
           && REG_OK_FOR_BASE_P (XEXP (X, 0))           \
           && CONSTANT_P (XEXP (X, 1))                  \
           && (MODE) != SFmode                          \
           && (MODE) != DFmode)                         \
    goto ADDR;                                          \
  else if (GET_CODE (X) == LO_SUM                       \
           && GET_CODE (XEXP (X, 0)) == SUBREG          \
           && GET_CODE (SUBREG_REG (XEXP (X, 0))) == REG\
           && REG_OK_FOR_BASE_P (SUBREG_REG (XEXP (X, 0)))\
           && CONSTANT_P (XEXP (X, 1))                  \
           && (MODE) != SFmode                          \
           && (MODE) != DFmode)                         \
    goto ADDR;                                          \
  else if (GET_CODE (X) == LABEL_REF                    \
           || (GET_CODE (X) == CONST_INT                \
               && INT_14_BITS (X)))                     \
    goto ADDR;                                          \
}
\f
/* Try machine-dependent ways of modifying an illegitimate address
   to be legitimate.  If we find one, return the new, valid address.
   This macro is used in only one place: `memory_address' in explow.c.

   OLDX is the address as it was before break_out_memory_refs was called.
   In some cases it is useful to look at this to decide what needs to be done.

   MODE and WIN are passed so that this macro can use
   GO_IF_LEGITIMATE_ADDRESS.

   It is always safe for this macro to do nothing.  It exists to recognize
   opportunities to optimize the output.  */

extern struct rtx_def *hppa_legitimize_address ();
#define LEGITIMIZE_ADDRESS(X, OLDX, MODE, WIN)  \
{ rtx orig_x = (X);                             \
  (X) = hppa_legitimize_address (X, OLDX, MODE);        \
  if ((X) != orig_x && memory_address_p (MODE, X)) \
    goto WIN; }

/* Go to LABEL if ADDR (a legitimate address expression)
   has an effect that depends on the machine mode it is used for.  */

#define GO_IF_MODE_DEPENDENT_ADDRESS(ADDR,LABEL)        \
  if (GET_CODE (ADDR) == PRE_DEC        \
      || GET_CODE (ADDR) == POST_DEC    \
      || GET_CODE (ADDR) == PRE_INC     \
      || GET_CODE (ADDR) == POST_INC)   \
    goto LABEL
\f
/* Define this macro if references to a symbol must be treated
   differently depending on something about the variable or
   function named by the symbol (such as what section it is in).

   The macro definition, if any, is executed immediately after the
   rtl for DECL or other node is created.
   The value of the rtl will be a `mem' whose address is a
   `symbol_ref'.

   The usual thing for this macro to do is to a flag in the
   `symbol_ref' (such as `SYMBOL_REF_FLAG') or to store a modified
   name string in the `symbol_ref' (if one bit is not enough
   information).

   On the HP-PA we use this to indicate if a symbol is in text or
   data space.  Also, function labels need special treatment. */

#define TEXT_SPACE_P(DECL)\
  (TREE_CODE (DECL) == FUNCTION_DECL                                    \
   || (TREE_CODE (DECL) == VAR_DECL                                     \
       && TREE_READONLY (DECL) && ! TREE_SIDE_EFFECTS (DECL)            \
       && !flag_pic)                                                    \
   || (*tree_code_type[(int) TREE_CODE (DECL)] == 'c'                   \
       && !(TREE_CODE (DECL) == STRING_CST && flag_writable_strings)))

#define FUNCTION_NAME_P(NAME) \
(*(NAME) == '@' || (*(NAME) == '*' && *((NAME) + 1) == '@'))

#define ENCODE_SECTION_INFO(DECL)\
do                                                      \
  { if (TEXT_SPACE_P (DECL))                            \
      { rtx _rtl;                                       \
        if (TREE_CODE (DECL) == FUNCTION_DECL           \
            || TREE_CODE (DECL) == VAR_DECL)            \
          _rtl = DECL_RTL (DECL);                       \
        else                                            \
          _rtl = TREE_CST_RTL (DECL);                   \
        SYMBOL_REF_FLAG (XEXP (_rtl, 0)) = 1;           \
        if (TREE_CODE (DECL) == FUNCTION_DECL)          \
          hppa_encode_label (XEXP (DECL_RTL (DECL), 0));\
      }                                                 \
  }                                                     \
while (0)
  
/* Store the user-specified part of SYMBOL_NAME in VAR.
   This is sort of inverse to ENCODE_SECTION_INFO.  */

#define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME)    \
  (VAR) = ((SYMBOL_NAME)  + ((SYMBOL_NAME)[0] == '*' ?  \
                             1 + (SYMBOL_NAME)[1] == '@'\
                             : (SYMBOL_NAME)[0] == '@'))

/* Specify the machine mode that this machine uses
   for the index in the tablejump instruction.  */
#define CASE_VECTOR_MODE DImode

/* Define this if the tablejump instruction expects the table
   to contain offsets from the address of the table.
   Do not define this if the table should contain absolute addresses.  */
/* #define CASE_VECTOR_PC_RELATIVE */

#define CASE_DROPS_THROUGH
/* Specify the tree operation to be used to convert reals to integers.  */
#define IMPLICIT_FIX_EXPR FIX_ROUND_EXPR

/* This is the kind of divide that is easiest to do in the general case.  */
#define EASY_DIV_EXPR TRUNC_DIV_EXPR

/* Define this as 1 if `char' should by default be signed; else as 0.  */
#define DEFAULT_SIGNED_CHAR 1

/* Max number of bytes we can move from memory to memory
   in one reasonably fast instruction.  */
#define MOVE_MAX 8

/* Define if normal loads of shorter-than-word items from memory clears
   the rest of the bigs in the register.  */
#define BYTE_LOADS_ZERO_EXTEND

/* Nonzero if access to memory by bytes is slow and undesirable.  */
#define SLOW_BYTE_ACCESS 1

/* Do not break .stabs pseudos into continuations.  */
#define DBX_CONTIN_LENGTH 0

/* Value is 1 if truncating an integer of INPREC bits to OUTPREC bits
   is done just by pretending it is already truncated.  */
#define TRULY_NOOP_TRUNCATION(OUTPREC, INPREC) 1

/* We assume that the store-condition-codes instructions store 0 for false
   and some other value for true.  This is the value stored for true.  */

#define STORE_FLAG_VALUE 1

/* When a prototype says `char' or `short', really pass an `int'.  */
#define PROMOTE_PROTOTYPES

/* Specify the machine mode that pointers have.
   After generation of rtl, the compiler makes no further distinction
   between pointers and any other objects of this machine mode.  */
#define Pmode SImode

/* Add any extra modes needed to represent the condition code.

   HPPA floating comparisons produce condition codes. */
#define EXTRA_CC_MODES CCFPmode

/* Define the names for the modes specified above.  */
#define EXTRA_CC_NAMES "CCFP"

/* Given a comparison code (EQ, NE, etc.) and the first operand of a COMPARE,
   return the mode to be used for the comparison.  For floating-point, CCFPmode
   should be used.  CC_NOOVmode should be used when the first operand is a
   PLUS, MINUS, or NEG.  CCmode should be used when no special processing is
   needed.  */
#define SELECT_CC_MODE(OP,X,Y) \
  (GET_MODE_CLASS (GET_MODE (X)) == MODE_FLOAT ? CCFPmode : CCmode)    \

/* A function address in a call instruction
   is a byte address (for indexing purposes)
   so give the MEM rtx a byte's mode.  */
#define FUNCTION_MODE SImode
  
/* Define this if addresses of constant functions
   shouldn't be put through pseudo regs where they can be cse'd.
   Desirable on machines where ordinary constants are expensive
   but a CALL with constant address is cheap.  */
#define NO_FUNCTION_CSE

/* Define this if shift instructions ignore all but the low-order
   few bits. */
#define SHIFT_COUNT_TRUNCATED

/* Use atexit for static constructors/destructors, instead of defining
   our own exit function.  */
#define HAVE_ATEXIT

/* Compute the cost of computing a constant rtl expression RTX
   whose rtx-code is CODE.  The body of this macro is a portion
   of a switch statement.  If the code is computed here,
   return it with a return statement.  Otherwise, break from the switch.  */

#define CONST_COSTS(RTX,CODE,OUTER_CODE) \
  case CONST_INT:                                               \
    if (INTVAL (RTX) == 0) return 0;                            \
    if (INT_14_BITS (RTX)) return 1;                            \
  case HIGH:                                                    \
    return 2;                                                   \
  case CONST:                                                   \
  case LABEL_REF:                                               \
  case SYMBOL_REF:                                              \
    return 4;                                                   \
  case CONST_DOUBLE:                                            \
    if (RTX == CONST0_RTX (DFmode) || RTX == CONST0_RTX (SFmode)\
        && OUTER_CODE != SET)                                   \
      return 0;                                                 \
    else                                                        \
      return 8;

#define ADDRESS_COST(RTX) \
  (GET_CODE (RTX) == REG ? 1 : hppa_address_cost (RTX))

/* Compute extra cost of moving data between one register class
   and another.

   Make moves from SAR so expensive they should never happen.

   Copies involving a FP register and a non-FP register are relatively 
   expensive because they must go through memory.

   Other copies are reasonably cheap.  */
#define REGISTER_MOVE_COST(CLASS1, CLASS2) \
 (CLASS1 == SHIFT_REGS ? 0xffff                                 \
  : FP_REG_CLASS_P (CLASS1) && ! FP_REG_CLASS_P (CLASS2) ? 16   \
  : FP_REG_CLASS_P (CLASS2) && ! FP_REG_CLASS_P (CLASS1) ? 16   \
  : 2)


/* Provide the costs of a rtl expression.  This is in the body of a
   switch on CODE.  The purpose for the cost of MULT is to encourage
   `synth_mult' to find a synthetic multiply when reasonable.  */

#define RTX_COSTS(X,CODE,OUTER_CODE)                    \
  case MULT:                                            \
    return TARGET_SNAKE && ! TARGET_DISABLE_FPREGS      \
      ? COSTS_N_INSNS (8) : COSTS_N_INSNS (20);         \
  case DIV:                                             \
  case UDIV:                                            \
  case MOD:                                             \
  case UMOD:                                            \
    return COSTS_N_INSNS (60);                          \
  case PLUS: /* this includes shNadd insns */           \
    return COSTS_N_INSNS (1) + 2;

/* Adjust the cost of dependencies.  */

#define ADJUST_COST(INSN,LINK,DEP,COST) \
  (COST) = pa_adjust_cost (INSN, LINK, DEP, COST)

/* Handling the special cases is going to get too complicated for a macro,
   just call `pa_adjust_insn_length' to do the real work.  */
#define ADJUST_INSN_LENGTH(INSN, LENGTH)        \
  LENGTH += pa_adjust_insn_length (INSN, LENGTH);

/* Enable a bug fix.  (This is for extra caution.)  */
#define SHORTEN_WITH_ADJUST_INSN_LENGTH

/* Millicode insns are actually function calls with some special
   constraints on arguments and register usage.

   Millicode calls always expect their arguments in the integer argument
   registers, and always return their result in %r29 (ret1).  They
   are expected to clobber their arguments, %r1, %r29, and %r31 and
   nothing else.

   These macros tell reorg that the references to arguments and 
   register clobbers for millicode calls do not appear to happen 
   until after the millicode call.  This allows reorg to put insns
   which set the argument registers into the delay slot of the millicode
   call -- thus they act more like traditional CALL_INSNs.

   get_attr_type will try to recognize the given insn, so make sure to
   filter out things it will not accept -- SEQUENCE, USE and CLOBBER insns
   in particular.  */
#define INSN_SETS_ARE_DELAYED(X) \
  ((GET_CODE (X) == INSN                        \
    && GET_CODE (PATTERN (X)) != SEQUENCE       \
    && GET_CODE (PATTERN (X)) != USE            \
    && GET_CODE (PATTERN (X)) != CLOBBER        \
    && get_attr_type (X) == TYPE_MILLI))

#define INSN_REFERENCES_ARE_DELAYED(X) \
  ((GET_CODE (X) == INSN                        \
    && GET_CODE (PATTERN (X)) != SEQUENCE       \
    && GET_CODE (PATTERN (X)) != USE            \
    && GET_CODE (PATTERN (X)) != CLOBBER        \
    && get_attr_type (X) == TYPE_MILLI))        

\f
/* Control the assembler format that we output.  */

/* Output at beginning of assembler file.  */

#define ASM_FILE_START(FILE) \
do { fprintf (FILE, "\t.SPACE $PRIVATE$\n\
\t.SUBSPA $DATA$,QUAD=1,ALIGN=8,ACCESS=31\n\
\t.SUBSPA $BSS$,QUAD=1,ALIGN=8,ACCESS=31,ZERO,SORT=82\n\
\t.SPACE $TEXT$\n\
\t.SUBSPA $LIT$,QUAD=0,ALIGN=8,ACCESS=44\n\
\t.SUBSPA $CODE$,QUAD=0,ALIGN=8,ACCESS=44,CODE_ONLY\n\
\t.IMPORT $global$,DATA\n\
\t.IMPORT $$dyncall,MILLICODE\n");\
     if (profile_flag)\
       fprintf (FILE, "\t.IMPORT _mcount, CODE\n");\
   } while (0)

/* Output to assembler file text saying following lines
   may contain character constants, extra white space, comments, etc.  */

#define ASM_APP_ON ""

/* Output to assembler file text saying following lines
   no longer contain unusual constructs.  */

#define ASM_APP_OFF ""

/* We don't yet know how to identify GCC to HP-PA machines.  */
#define ASM_IDENTIFY_GCC(FILE) fprintf (FILE, "; gcc_compiled.:\n")

/* Output before code.  */

/* Supposedly the assembler rejects the command if there is no tab!  */
#define TEXT_SECTION_ASM_OP "\t.SPACE $TEXT$\n\t.SUBSPA $CODE$\n"

/* Output before writable data.  */

/* Supposedly the assembler rejects the command if there is no tab!  */
#define DATA_SECTION_ASM_OP "\t.SPACE $PRIVATE$\n\t.SUBSPA $DATA$\n"

/* Output before uninitialized data.  */

#define BSS_SECTION_ASM_OP "\t.SPACE $PRIVATE$\n\t.SUBSPA $BSS$\n"

/* Define the .bss section for ASM_OUTPUT_LOCAL to use. */

#define EXTRA_SECTIONS in_bss

#define EXTRA_SECTION_FUNCTIONS                                         \
void                                                                    \
bss_section ()                                                          \
{                                                                       \
  if (in_section != in_bss)                                             \
    {                                                                   \
      fprintf (asm_out_file, "%s\n", BSS_SECTION_ASM_OP);               \
      in_section = in_bss;                                              \
    }                                                                   \
}


/* How to refer to registers in assembler output.
   This sequence is indexed by compiler's hard-register-number (see above).  */

#define REGISTER_NAMES \
{"0", "%r1", "%r2", "%r3", "%r4", "%r5", "%r6", "%r7",                  \
 "%r8", "%r9", "%r10", "%r11", "%r12", "%r13", "%r14", "%r15",          \
 "%r16", "%r17", "%r18", "%r19", "%r20", "%r21", "%r22", "%r23",        \
 "%r24", "%r25", "%r26", "%r27", "%r28", "%r29", "%r30", "%r31",        \
 "%fr4", "%fr5", "%fr6", "%fr7",        \
 "%fr8", "%fr9", "%fr10", "%fr11", "%fr12", "%fr13", "%fr14", "%fr15",  \
 "%fr4", "%fr4R", "%fr5", "%fr5R", "%fr6", "%fr6R", "%fr7", "%fr7R",    \
 "%fr8", "%fr8R", "%fr9", "%fr9R", "%fr10", "%fr10R", "%fr11", "%fr11R",\
 "%fr12", "%fr12R", "%fr13", "%fr13R", "%fr14", "%fr14R", "%fr15", "%fr15R",\
 "%fr16", "%fr16R", "%fr17", "%fr17R", "%fr18", "%fr18R", "%fr19", "%fr19R",\
 "%fr20", "%fr20R", "%fr21", "%fr21R", "%fr22", "%fr22R", "%fr23", "%fr23R",\
 "%fr24", "%fr24R", "%fr25", "%fr25R", "%fr26", "%fr26R", "%fr27", "%fr27R",\
 "%fr28", "%fr28R", "%fr29", "%fr29R", "%fr30", "%fr30R", "%fr31", "%fr31R",\
 "SAR"}

/* How to renumber registers for dbx and gdb.  */

#define DBX_REGISTER_NUMBER(REGNO) (REGNO)

/* This is how to output the definition of a user-level label named NAME,
   such as the label on a static function or variable NAME.  */

#define ASM_OUTPUT_LABEL(FILE, NAME)    \
  do { assemble_name (FILE, NAME);      \
       if (TARGET_TRAILING_COLON)       \
         fputc (':', FILE);             \
       fputc ('\n', FILE); } while (0)

/* This is how to output a command to make the user-level label named NAME
   defined for reference from other files.  */

#define ASM_OUTPUT_EXTERNAL(FILE, DECL, NAME)   \
  do { fputs ("\t.IMPORT ", FILE);                              \
         assemble_name (FILE, NAME);                            \
       if (FUNCTION_NAME_P (NAME))                              \
         fputs (",CODE\n", FILE);                               \
       else                                                     \
         fputs (",DATA\n", FILE);                               \
     } while (0)

/* hpux ld doesn't output the object file name, or anything useful at
   all, to indicate the start of an object file's symbols. This screws
   up gdb, so we'll output this magic cookie at the end of an object
   file with debugging symbols */

#define ASM_FILE_END(FILE) \
  do { if (write_symbols == DBX_DEBUG)\
         { fputs (TEXT_SECTION_ASM_OP, FILE);\
           fputs (".stabs \"end_file.\",4,0,0,Ltext_end\nLtext_end:\n",\
                  (FILE));\
         }\
     } while (0)

/* The bogus HP assembler requires ALL external references to be 
   "imported", even library calls. They look a bit different, so
   here's this macro. */

#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, RTL) \
  do { fputs ("\t.IMPORT ", FILE);                                      \
       assemble_name (FILE, XSTR ((RTL), 0));                           \
       fputs (",CODE\n", FILE);                                         \
     } while (0)

#define ASM_GLOBALIZE_LABEL(FILE, NAME)                                 \
  do { fputs ("\t.EXPORT ", FILE); assemble_name (FILE, NAME);          \
       if (FUNCTION_NAME_P (NAME))                                      \
         fputs (",CODE\n", FILE);                                       \
       else                                                             \
         fputs (",DATA\n", FILE);} while (0)

/* This is how to output a reference to a user-level label named NAME.
   `assemble_name' uses this.  */

#define ASM_OUTPUT_LABELREF(FILE,NAME)  \
  fprintf ((FILE), "%s", (NAME) + (FUNCTION_NAME_P (NAME) ? 1 : 0))

/* This is how to output an internal numbered label where
   PREFIX is the class of label and NUM is the number within the class.  */

#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)      \
  {fprintf (FILE, "%s$%04d", PREFIX, NUM);              \
   if (TARGET_TRAILING_COLON)                           \
     fputs (":\n", FILE);                               \
   else                                                 \
     fputs ("\n", FILE);}

/* This is how to store into the string LABEL
   the symbol_ref name of an internal numbered label where
   PREFIX is the class of label and NUM is the number within the class.
   This is suitable for output with `assemble_name'.  */

#define ASM_GENERATE_INTERNAL_LABEL(LABEL,PREFIX,NUM)   \
  sprintf (LABEL, "*%s$%04d", PREFIX, NUM)

/* This is how to output an assembler line defining a `double' constant.  */

#define ASM_OUTPUT_DOUBLE(FILE,VALUE)  \
  do { union { double d; int i[2];} __u;        \
    __u.d = (VALUE);                            \
    fprintf (FILE, "\t; .double %.20e\n\t.word %d ; = 0x%x\n\t.word %d ; = 0x%x\n",     \
             __u.d, __u.i[0], __u.i[0], __u.i[1], __u.i[1]);    \
  } while (0)

/* This is how to output an assembler line defining a `float' constant.  */

#define ASM_OUTPUT_FLOAT(FILE,VALUE)  \
  do { union { float f; int i;} __u;            \
    __u.f = (VALUE);                            \
    fprintf (FILE, "\t; .float %.12e\n\t.word %d ; = 0x%x\n", __u.f, __u.i, __u.i); \
  } while (0)

/* This is how to output an assembler line defining an `int' constant.  */

#define ASM_OUTPUT_INT(FILE,VALUE)  \
{ fprintf (FILE, "\t.word ");                   \
  if (function_label_operand (VALUE, VOIDmode)) \
    fprintf (FILE, "P%%");                      \
  output_addr_const (FILE, (VALUE));            \
  fprintf (FILE, "\n");}

/* Likewise for `short' and `char' constants.  */

#define ASM_OUTPUT_SHORT(FILE,VALUE)  \
( fprintf (FILE, "\t.half "),                   \
  output_addr_const (FILE, (VALUE)),            \
  fprintf (FILE, "\n"))

#define ASM_OUTPUT_CHAR(FILE,VALUE)  \
( fprintf (FILE, "\t.byte "),                   \
  output_addr_const (FILE, (VALUE)),            \
  fprintf (FILE, "\n"))

/* This is how to output an assembler line for a numeric constant byte.  */

#define ASM_OUTPUT_BYTE(FILE,VALUE)  \
  fprintf (FILE, "\t.byte 0x%x\n", (VALUE))

#define ASM_OUTPUT_ASCII(FILE, P, SIZE)  \
  output_ascii ((FILE), (P), (SIZE))

#define ASM_OUTPUT_REG_PUSH(FILE,REGNO)
#define ASM_OUTPUT_REG_POP(FILE,REGNO) 
/* This is how to output an element of a case-vector that is absolute.
   Note that this method makes filling these branch delay slots
   impossible.  */

#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE)  \
  fprintf (FILE, "\tb L$%04d\n\tnop\n", VALUE)

/* Jump tables are executable code and live in the TEXT section on the PA.  */
#define JUMP_TABLES_IN_TEXT_SECTION

/* This is how to output an element of a case-vector that is relative.
   (The HP-PA does not use such vectors,
   but we must define this macro anyway.)  */

#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, VALUE, REL)  \
  fprintf (FILE, "\tword L%d-L%d\n", VALUE, REL)

/* This is how to output an assembler line
   that says to advance the location counter
   to a multiple of 2**LOG bytes.  */

#define ASM_OUTPUT_ALIGN(FILE,LOG)      \
    fprintf (FILE, "\t.align %d\n", (1<<(LOG)))

#define ASM_OUTPUT_SKIP(FILE,SIZE)  \
  fprintf (FILE, "\t.blockz %d\n", (SIZE))

/* This says how to output an assembler line
   to define a global common symbol.  */

/* Supposedly the assembler rejects the command if there is no tab!  */


#define ASM_OUTPUT_COMMON(FILE, NAME, SIZE, ROUNDED)  \
{ bss_section ();                                       \
  assemble_name ((FILE), (NAME));                       \
  if (TARGET_TRAILING_COLON)                            \
    fputc (':', (FILE));                                \
  fputs ("\t.comm ", (FILE));                           \
  fprintf ((FILE), "%d\n", (ROUNDED));}

/* This says how to output an assembler line
   to define a local common symbol.  */

#define ASM_OUTPUT_LOCAL(FILE, NAME, SIZE, ROUNDED)  \
{ bss_section ();                                               \
  fprintf ((FILE), "\t.align %d\n", (SIZE) <= 4 ? 4 : 8);       \
  assemble_name ((FILE), (NAME));                               \
  if (TARGET_TRAILING_COLON)                            \
    fputc (':', (FILE));                                \
  fprintf ((FILE), "\n\t.block %d\n", (ROUNDED));}

/* Store in OUTPUT a string (made with alloca) containing
   an assembler-name for a local static variable named NAME.
   LABELNO is an integer which is different for each call.  */

#define ASM_FORMAT_PRIVATE_NAME(OUTPUT, NAME, LABELNO)  \
( (OUTPUT) = (char *) alloca (strlen ((NAME)) + 12),    \
  sprintf ((OUTPUT), "%s___%d", (NAME), (LABELNO)))

/* Define the parentheses used to group arithmetic operations
   in assembler code.  */

#define ASM_OPEN_PAREN "("
#define ASM_CLOSE_PAREN ")"

/* Define results of standard character escape sequences.  */
#define TARGET_BELL 007
#define TARGET_BS 010
#define TARGET_TAB 011
#define TARGET_NEWLINE 012
#define TARGET_VT 013
#define TARGET_FF 014
#define TARGET_CR 015

#define PRINT_OPERAND_PUNCT_VALID_P(CHAR) \
  ((CHAR) == '@' || (CHAR) == '#' || (CHAR) == '*' || (CHAR) == '^')

/* Print operand X (an rtx) in assembler syntax to file FILE.
   CODE is a letter or dot (`z' in `%z0') or 0 if no letter was specified.
   For `%' followed by punctuation, CODE is the punctuation and X is null.

   On the HP-PA, the CODE can be `r', meaning this is a register-only operand
   and an immediate zero should be represented as `r0'.

   Several % codes are defined:
   O an operation
   C compare conditions
   N extract conditions
   M modifier to handle preincrement addressing for memory refs.
   F modifier to handle preincrement addressing for fp memory refs */

#define PRINT_OPERAND(FILE, X, CODE) print_operand (FILE, X, CODE)

\f
/* Print a memory address as an operand to reference that memory location.  */

#define PRINT_OPERAND_ADDRESS(FILE, ADDR)  \
{ register rtx addr = ADDR;                                             \
  register rtx base;                                                    \
  int offset;                                                           \
  switch (GET_CODE (addr))                                              \
    {                                                                   \
    case REG:                                                           \
      fprintf (FILE, "0(0,%s)", reg_names [REGNO (addr)]);              \
      break;                                                            \
    case PLUS:                                                          \
      if (GET_CODE (XEXP (addr, 0)) == CONST_INT)                       \
        offset = INTVAL (XEXP (addr, 0)), base = XEXP (addr, 1);        \
      else if (GET_CODE (XEXP (addr, 1)) == CONST_INT)                  \
        offset = INTVAL (XEXP (addr, 1)), base = XEXP (addr, 0);        \
      else                                                              \
        abort ();                                                       \
      fprintf (FILE, "%d(0,%s)", offset, reg_names [REGNO (base)]);     \
      break;                                                            \
    case LO_SUM:                                                        \
      fputs ("R'", FILE);                                               \
      output_global_address (FILE, XEXP (addr, 1));                     \
      fputs ("(", FILE);                                                \
      output_operand (XEXP (addr, 0), 0);                               \
      fputs (")", FILE);                                                \
      break;                                                            \
    case CONST_INT:                                                     \
      fprintf (FILE, "%d(0,0)", INTVAL (addr));                         \
      break;                                                            \
    default:                                                            \
      output_addr_const (FILE, addr);                                   \
    }}

\f
/* Define functions in pa.c and used in insn-output.c.  */

extern char *output_and ();
extern char *output_ior ();
extern char *output_move_double ();
extern char *output_fp_move_double ();
extern char *output_block_move ();
extern char *output_scc_insn ();
extern char *output_cbranch ();
extern char *output_bb ();
extern char *output_dbra ();
extern char *output_movb ();
extern char *output_return ();
extern char *output_call ();
extern char *output_floatsisf2 ();
extern char *output_floatsidf2 ();
extern char *output_mul_insn ();
extern char *output_div_insn ();
extern char *output_mod_insn ();
extern char *singlemove_string ();
extern void output_arg_descriptor ();
extern void output_global_address ();
extern struct rtx_def *legitimize_pic_address ();
extern struct rtx_def *gen_cmp_fp ();
extern void hppa_encode_label ();

extern struct rtx_def *hppa_save_pic_table_rtx;