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/* Header file for libgcc2.c.  */

/* Copyright (C) 2000, 2001, 2004, 2005

   Free Software Foundation, Inc.

This file is part of GCC.

GCC 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 2, or (at your option) any later

version.

GCC 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 GCC; see the file COPYING.  If not, write to the Free

Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA

02110-1301, USA.  */

/* As a special exception, if you link this library with other files,

   some of which are compiled with GCC, to produce an executable,

   this library does not by itself cause the resulting executable

   to be covered by the GNU General Public License.

   This exception does not however invalidate any other reasons why

   the executable file might be covered by the GNU General Public License.  */

#ifndef GCC_LIBGCC2_H

#define GCC_LIBGCC2_H

#ifndef HIDE_EXPORTS

#pragma GCC visibility push(default)

#endif

extern int __gcc_bcmp (const unsigned char *, const unsigned char *, size_t);

extern void __clear_cache (char *, char *);

extern void __eprintf (const char *, const char *, unsigned int, const char *)

  __attribute__ ((__noreturn__));

struct exception_descriptor;

extern short int __get_eh_table_language (struct exception_descriptor *);

extern short int __get_eh_table_version (struct exception_descriptor *);

/* Permit the tm.h file to select the endianness to use just for this

   file.  This is used when the endianness is determined when the

   compiler is run.  */

#ifndef LIBGCC2_WORDS_BIG_ENDIAN

#define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN

#endif

#ifndef LIBGCC2_DOUBLE_TYPE_SIZE

#define LIBGCC2_DOUBLE_TYPE_SIZE DOUBLE_TYPE_SIZE

#endif

#ifndef LIBGCC2_LONG_DOUBLE_TYPE_SIZE

#define LIBGCC2_LONG_DOUBLE_TYPE_SIZE LONG_DOUBLE_TYPE_SIZE

#endif

#ifndef LIBGCC2_HAS_SF_MODE

#define LIBGCC2_HAS_SF_MODE (BITS_PER_UNIT == 8)

#endif

#ifndef LIBGCC2_HAS_DF_MODE

#define LIBGCC2_HAS_DF_MODE \

  (BITS_PER_UNIT == 8 \

   && (LIBGCC2_DOUBLE_TYPE_SIZE == 64 \

       || LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 64))

#endif

#ifndef LIBGCC2_HAS_XF_MODE

#define LIBGCC2_HAS_XF_MODE \

  (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 80)

#endif

#ifndef LIBGCC2_HAS_TF_MODE

#define LIBGCC2_HAS_TF_MODE \

  (BITS_PER_UNIT == 8 && LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 128)

#endif

#ifndef SF_SIZE

#if LIBGCC2_HAS_SF_MODE

#define SF_SIZE FLT_MANT_DIG

#else

#define SF_SIZE 0

#endif

#endif

#ifndef DF_SIZE

#if LIBGCC2_HAS_DF_MODE

#if LIBGCC2_DOUBLE_TYPE_SIZE == 64

#define DF_SIZE DBL_MANT_DIG

#elif LIBGCC2_LONG_DOUBLE_TYPE_SIZE == 64

#define DF_SIZE LDBL_MANT_DIG

#else

#define DF_SIZE 0

#endif

#else

#define DF_SIZE 0

#endif

#endif

#ifndef XF_SIZE

#if LIBGCC2_HAS_XF_MODE

#define XF_SIZE LDBL_MANT_DIG

#else

#define XF_SIZE 0

#endif

#endif

#ifndef TF_SIZE

#if LIBGCC2_HAS_TF_MODE

#define TF_SIZE LDBL_MANT_DIG

#else

#define TF_SIZE 0

#endif

#endif

/* FIXME: This #ifdef probably should be removed, ie. enable the test

   for mips too.  */

#ifdef __powerpc__

#define IS_IBM_EXTENDED(SIZE) (SIZE == 106)

#else

#define IS_IBM_EXTENDED(SIZE) 0

#endif

/* In the first part of this file, we are interfacing to calls generated

   by the compiler itself.  These calls pass values into these routines

   which have very specific modes (rather than very specific types), and

   these compiler-generated calls also expect any return values to have

   very specific modes (rather than very specific types).  Thus, we need

   to avoid using regular C language type names in this part of the file

   because the sizes for those types can be configured to be anything.

   Instead we use the following special type names.  */

typedef          int QItype     __attribute__ ((mode (QI)));

typedef unsigned int UQItype    __attribute__ ((mode (QI)));

typedef          int HItype     __attribute__ ((mode (HI)));

typedef unsigned int UHItype    __attribute__ ((mode (HI)));

#if MIN_UNITS_PER_WORD > 1

/* These typedefs are usually forbidden on dsp's with UNITS_PER_WORD 1.  */

typedef          int SItype     __attribute__ ((mode (SI)));

typedef unsigned int USItype    __attribute__ ((mode (SI)));

#if LONG_LONG_TYPE_SIZE > 32

/* These typedefs are usually forbidden on archs with UNITS_PER_WORD 2.  */

typedef          int DItype     __attribute__ ((mode (DI)));

typedef unsigned int UDItype    __attribute__ ((mode (DI)));

#if MIN_UNITS_PER_WORD > 4

/* These typedefs are usually forbidden on archs with UNITS_PER_WORD 4.  */

typedef          int TItype     __attribute__ ((mode (TI)));

typedef unsigned int UTItype    __attribute__ ((mode (TI)));

#endif

#endif

#endif

#if LIBGCC2_HAS_SF_MODE

typedef         float SFtype    __attribute__ ((mode (SF)));

typedef _Complex float SCtype   __attribute__ ((mode (SC)));

#endif

#if LIBGCC2_HAS_DF_MODE

typedef         float DFtype    __attribute__ ((mode (DF)));

typedef _Complex float DCtype   __attribute__ ((mode (DC)));

#endif

#if LIBGCC2_HAS_XF_MODE

typedef         float XFtype    __attribute__ ((mode (XF)));

typedef _Complex float XCtype   __attribute__ ((mode (XC)));

#endif

#if LIBGCC2_HAS_TF_MODE

typedef         float TFtype    __attribute__ ((mode (TF)));

typedef _Complex float TCtype   __attribute__ ((mode (TC)));

#endif

typedef int word_type __attribute__ ((mode (__word__)));

/* Make sure that we don't accidentally use any normal C language built-in

   type names in the first part of this file.  Instead we want to use *only*

   the type names defined above.  The following macro definitions insure

   that if we *do* accidentally use some normal C language built-in type name,

   we will get a syntax error.  */

#define char bogus_type

#define short bogus_type

#define int bogus_type

#define long bogus_type

#define unsigned bogus_type

#define float bogus_type

#define double bogus_type

/* Versions prior to 3.4.4 were not taking into account the word size for

   the 5 trapping arithmetic functions absv, addv, subv, mulv and negv.  As

   a consequence, the si and di variants were always and the only ones emitted.

   To maintain backward compatibility, COMPAT_SIMODE_TRAPPING_ARITHMETIC is

   defined on platforms where it makes sense to still have the si variants

   emitted.  As a bonus, their implementation is now correct.  Note that the

   same mechanism should have been implemented for the di variants, but it

   turns out that no platform would define COMPAT_DIMODE_TRAPPING_ARITHMETIC

   if it existed.  */

#if LIBGCC2_UNITS_PER_WORD == 8

#define W_TYPE_SIZE (8 * BITS_PER_UNIT)

#define Wtype   DItype

#define UWtype  UDItype

#define HWtype  DItype

#define UHWtype UDItype

#define DWtype  TItype

#define UDWtype UTItype

#define __NW(a,b)       __ ## a ## di ## b

#define __NDW(a,b)      __ ## a ## ti ## b

#define COMPAT_SIMODE_TRAPPING_ARITHMETIC

#elif LIBGCC2_UNITS_PER_WORD == 4

#define W_TYPE_SIZE (4 * BITS_PER_UNIT)

#define Wtype   SItype

#define UWtype  USItype

#define HWtype  SItype

#define UHWtype USItype

#define DWtype  DItype

#define UDWtype UDItype

#define __NW(a,b)       __ ## a ## si ## b

#define __NDW(a,b)      __ ## a ## di ## b

#elif LIBGCC2_UNITS_PER_WORD == 2

#define W_TYPE_SIZE (2 * BITS_PER_UNIT)

#define Wtype   HItype

#define UWtype  UHItype

#define HWtype  HItype

#define UHWtype UHItype

#define DWtype  SItype

#define UDWtype USItype

#define __NW(a,b)       __ ## a ## hi ## b

#define __NDW(a,b)      __ ## a ## si ## b

#else

#define W_TYPE_SIZE BITS_PER_UNIT

#define Wtype   QItype

#define UWtype  UQItype

#define HWtype  QItype

#define UHWtype UQItype

#define DWtype  HItype

#define UDWtype UHItype

#define __NW(a,b)       __ ## a ## qi ## b

#define __NDW(a,b)      __ ## a ## hi ## b

#endif

#define Wtype_MAX ((Wtype)(((UWtype)1 << (W_TYPE_SIZE - 1)) - 1))

#define Wtype_MIN (- Wtype_MAX - 1)

#if W_TYPE_SIZE == 8

# define Wtype_MAXp1_F  0x1p8f

#elif W_TYPE_SIZE == 16

# define Wtype_MAXp1_F  0x1p16f

#elif W_TYPE_SIZE == 32

# define Wtype_MAXp1_F  0x1p32f

#elif W_TYPE_SIZE == 64

# define Wtype_MAXp1_F  0x1p64f

#else

# error "expand the table"

#endif

#define __muldi3        __NDW(mul,3)

#define __divdi3        __NDW(div,3)

#define __udivdi3       __NDW(udiv,3)

#define __moddi3        __NDW(mod,3)

#define __umoddi3       __NDW(umod,3)

#define __negdi2        __NDW(neg,2)

#define __lshrdi3       __NDW(lshr,3)

#define __ashldi3       __NDW(ashl,3)

#define __ashrdi3       __NDW(ashr,3)

#define __cmpdi2        __NDW(cmp,2)

#define __ucmpdi2       __NDW(ucmp,2)

#define __udivmoddi4    __NDW(udivmod,4)

#define __fixunstfDI    __NDW(fixunstf,)

#define __fixtfdi       __NDW(fixtf,)

#define __fixunsxfDI    __NDW(fixunsxf,)

#define __fixxfdi       __NDW(fixxf,)

#define __fixunsdfDI    __NDW(fixunsdf,)

#define __fixdfdi       __NDW(fixdf,)

#define __fixunssfDI    __NDW(fixunssf,)

#define __fixsfdi       __NDW(fixsf,)

#define __floatdixf     __NDW(float,xf)

#define __floatditf     __NDW(float,tf)

#define __floatdidf     __NDW(float,df)

#define __floatdisf     __NDW(float,sf)

#define __floatundixf   __NDW(floatun,xf)

#define __floatunditf   __NDW(floatun,tf)

#define __floatundidf   __NDW(floatun,df)

#define __floatundisf   __NDW(floatun,sf)

#define __fixunsxfSI    __NW(fixunsxf,)

#define __fixunstfSI    __NW(fixunstf,)

#define __fixunsdfSI    __NW(fixunsdf,)

#define __fixunssfSI    __NW(fixunssf,)

#define __absvSI2       __NW(absv,2)

#define __addvSI3       __NW(addv,3)

#define __subvSI3       __NW(subv,3)

#define __mulvSI3       __NW(mulv,3)

#define __negvSI2       __NW(negv,2)

#define __absvDI2       __NDW(absv,2)

#define __addvDI3       __NDW(addv,3)

#define __subvDI3       __NDW(subv,3)

#define __mulvDI3       __NDW(mulv,3)

#define __negvDI2       __NDW(negv,2)

#define __ffsSI2        __NW(ffs,2)

#define __clzSI2        __NW(clz,2)

#define __ctzSI2        __NW(ctz,2)

#define __popcountSI2   __NW(popcount,2)

#define __paritySI2     __NW(parity,2)

#define __ffsDI2        __NDW(ffs,2)

#define __clzDI2        __NDW(clz,2)

#define __ctzDI2        __NDW(ctz,2)

#define __popcountDI2   __NDW(popcount,2)

#define __parityDI2     __NDW(parity,2)

extern DWtype __muldi3 (DWtype, DWtype);

extern DWtype __divdi3 (DWtype, DWtype);

extern UDWtype __udivdi3 (UDWtype, UDWtype);

extern UDWtype __umoddi3 (UDWtype, UDWtype);

extern DWtype __moddi3 (DWtype, DWtype);

/* __udivmoddi4 is static inline when building other libgcc2 portions.  */

#if (!defined (L_udivdi3) && !defined (L_divdi3) && \

     !defined (L_umoddi3) && !defined (L_moddi3))

extern UDWtype __udivmoddi4 (UDWtype, UDWtype, UDWtype *);

#endif

/* __negdi2 is static inline when building other libgcc2 portions.  */

#if !defined(L_divdi3) && !defined(L_moddi3)

extern DWtype __negdi2 (DWtype);

#endif

extern DWtype __lshrdi3 (DWtype, word_type);

extern DWtype __ashldi3 (DWtype, word_type);

extern DWtype __ashrdi3 (DWtype, word_type);

/* __udiv_w_sdiv is static inline when building other libgcc2 portions.  */

#if (!defined(L_udivdi3) && !defined(L_divdi3) && \

     !defined(L_umoddi3) && !defined(L_moddi3))

extern UWtype __udiv_w_sdiv (UWtype *, UWtype, UWtype, UWtype);

#endif

extern word_type __cmpdi2 (DWtype, DWtype);

extern word_type __ucmpdi2 (DWtype, DWtype);

extern Wtype __absvSI2 (Wtype);

extern Wtype __addvSI3 (Wtype, Wtype);

extern Wtype __subvSI3 (Wtype, Wtype);

extern Wtype __mulvSI3 (Wtype, Wtype);

extern Wtype __negvSI2 (Wtype);

extern DWtype __absvDI2 (DWtype);

extern DWtype __addvDI3 (DWtype, DWtype);

extern DWtype __subvDI3 (DWtype, DWtype);

extern DWtype __mulvDI3 (DWtype, DWtype);

extern DWtype __negvDI2 (DWtype);

#ifdef COMPAT_SIMODE_TRAPPING_ARITHMETIC

extern SItype __absvsi2 (SItype);

extern SItype __addvsi3 (SItype, SItype);

extern SItype __subvsi3 (SItype, SItype);

extern SItype __mulvsi3 (SItype, SItype);

extern SItype __negvsi2 (SItype);

#endif /* COMPAT_SIMODE_TRAPPING_ARITHMETIC */

#undef int

#if LIBGCC2_HAS_SF_MODE

extern DWtype __fixsfdi (SFtype);

extern SFtype __floatdisf (DWtype);

extern SFtype __floatundisf (UDWtype);

extern UWtype __fixunssfSI (SFtype);

extern DWtype __fixunssfDI (SFtype);

extern SFtype __powisf2 (SFtype, int);

extern SCtype __divsc3 (SFtype, SFtype, SFtype, SFtype);

extern SCtype __mulsc3 (SFtype, SFtype, SFtype, SFtype);

#endif

#if LIBGCC2_HAS_DF_MODE

extern DWtype __fixdfdi (DFtype);

extern DFtype __floatdidf (DWtype);

extern DFtype __floatundidf (UDWtype);

extern UWtype __fixunsdfSI (DFtype);

extern DWtype __fixunsdfDI (DFtype);

extern DFtype __powidf2 (DFtype, int);

extern DCtype __divdc3 (DFtype, DFtype, DFtype, DFtype);

extern DCtype __muldc3 (DFtype, DFtype, DFtype, DFtype);

#endif

#if LIBGCC2_HAS_XF_MODE

extern DWtype __fixxfdi (XFtype);

extern DWtype __fixunsxfDI (XFtype);

extern XFtype __floatdixf (DWtype);

extern XFtype __floatundixf (UDWtype);

extern UWtype __fixunsxfSI (XFtype);

extern XFtype __powixf2 (XFtype, int);

extern XCtype __divxc3 (XFtype, XFtype, XFtype, XFtype);

extern XCtype __mulxc3 (XFtype, XFtype, XFtype, XFtype);

#endif

#if LIBGCC2_HAS_TF_MODE

extern DWtype __fixunstfDI (TFtype);

extern DWtype __fixtfdi (TFtype);

extern TFtype __floatditf (DWtype);

extern TFtype __floatunditf (UDWtype);

extern TFtype __powitf2 (TFtype, int);

extern TCtype __divtc3 (TFtype, TFtype, TFtype, TFtype);

extern TCtype __multc3 (TFtype, TFtype, TFtype, TFtype);

#endif

#define int bogus_type

/* DWstructs are pairs of Wtype values in the order determined by

   LIBGCC2_WORDS_BIG_ENDIAN.  */

#if LIBGCC2_WORDS_BIG_ENDIAN

  struct DWstruct {Wtype high, low;};

#else

  struct DWstruct {Wtype low, high;};

#endif

/* We need this union to unpack/pack DImode values, since we don't have

   any arithmetic yet.  Incoming DImode parameters are stored into the

   `ll' field, and the unpacked result is read from the struct `s'.  */

typedef union

{

  struct DWstruct s;

  DWtype ll;

} DWunion;

/* Defined for L_popcount_tab.  Exported here because some targets may

   want to use it for their own versions of the __popcount builtins.  */

extern const UQItype __popcount_tab[256];

/* Defined for L_clz.  Exported here because some targets may want to use

   it for their own versions of the __clz builtins.  It contains the bit

   position of the first set bit for the numbers 0 - 255.  This avoids the

   need for a separate table for the __ctz builtins.  */

extern const UQItype __clz_tab[256];

#include "longlong.h"

#undef int

extern int __clzDI2 (UDWtype);

extern int __clzSI2 (UWtype);

extern int __ctzSI2 (UWtype);

extern int __ffsSI2 (UWtype);

extern int __ffsDI2 (DWtype);

extern int __ctzDI2 (UDWtype);

extern int __popcountSI2 (UWtype);

extern int __popcountDI2 (UDWtype);

extern int __paritySI2 (UWtype);

extern int __parityDI2 (UDWtype);

#define int bogus_type

extern void __enable_execute_stack (void *);

#ifndef HIDE_EXPORTS

#pragma GCC visibility pop

#endif

#endif /* ! GCC_LIBGCC2_H */