LXR uboot/arch/arc/lib/libgcc2.h

   1/*
   2 * Copyright (C) 1989-2013 Free Software Foundation, Inc.
   3 *
   4 * SPDX-License-Identifier:     GPL-2.0+
   5 */
   6
   7#ifndef __ASM_LIBGCC_H
   8#define __ASM_LIBGCC_H
   9
  10#define UNITS_PER_WORD 4        /* for ARC */
  11#define BITS_PER_UNIT 8         /* for ARC */
  12
  13#define W_TYPE_SIZE (4 * BITS_PER_UNIT)
  14
  15#define MIN_UNITS_PER_WORD UNITS_PER_WORD
  16
  17/* Work out the largest "word" size that we can deal with on this target.  */
  18#if MIN_UNITS_PER_WORD > 4
  19# define LIBGCC2_MAX_UNITS_PER_WORD 8
  20#elif (MIN_UNITS_PER_WORD > 2 \
  21       || (MIN_UNITS_PER_WORD > 1 && __SIZEOF_LONG_LONG__ > 4))
  22# define LIBGCC2_MAX_UNITS_PER_WORD 4
  23#else
  24# define LIBGCC2_MAX_UNITS_PER_WORD MIN_UNITS_PER_WORD
  25#endif
  26
  27/* Work out what word size we are using for this compilation.
  28   The value can be set on the command line.  */
  29#ifndef LIBGCC2_UNITS_PER_WORD
  30#define LIBGCC2_UNITS_PER_WORD LIBGCC2_MAX_UNITS_PER_WORD
  31#endif
  32
  33typedef          int QItype     __attribute__ ((mode (QI)));
  34typedef unsigned int UQItype    __attribute__ ((mode (QI)));
  35typedef          int HItype     __attribute__ ((mode (HI)));
  36typedef unsigned int UHItype    __attribute__ ((mode (HI)));
  37#if MIN_UNITS_PER_WORD > 1
  38/* These typedefs are usually forbidden on dsp's with UNITS_PER_WORD 1.  */
  39typedef          int SItype     __attribute__ ((mode (SI)));
  40typedef unsigned int USItype    __attribute__ ((mode (SI)));
  41#if __SIZEOF_LONG_LONG__ > 4
  42/* These typedefs are usually forbidden on archs with UNITS_PER_WORD 2.  */
  43typedef          int DItype     __attribute__ ((mode (DI)));
  44typedef unsigned int UDItype    __attribute__ ((mode (DI)));
  45#if MIN_UNITS_PER_WORD > 4
  46/* These typedefs are usually forbidden on archs with UNITS_PER_WORD 4.  */
  47typedef          int TItype     __attribute__ ((mode (TI)));
  48typedef unsigned int UTItype    __attribute__ ((mode (TI)));
  49#endif
  50#endif
  51#endif
  52
  53#if LIBGCC2_UNITS_PER_WORD == 8
  54#define W_TYPE_SIZE (8 * BITS_PER_UNIT)
  55#define Wtype   DItype
  56#define UWtype  UDItype
  57#define HWtype  DItype
  58#define UHWtype UDItype
  59#define DWtype  TItype
  60#define UDWtype UTItype
  61#ifdef LIBGCC2_GNU_PREFIX
  62#define __NW(a,b)       __gnu_ ## a ## di ## b
  63#define __NDW(a,b)      __gnu_ ## a ## ti ## b
  64#else
  65#define __NW(a,b)       __ ## a ## di ## b
  66#define __NDW(a,b)      __ ## a ## ti ## b
  67#endif
  68#elif LIBGCC2_UNITS_PER_WORD == 4
  69#define W_TYPE_SIZE (4 * BITS_PER_UNIT)
  70#define Wtype   SItype
  71#define UWtype  USItype
  72#define HWtype  SItype
  73#define UHWtype USItype
  74#define DWtype  DItype
  75#define UDWtype UDItype
  76#ifdef LIBGCC2_GNU_PREFIX
  77#define __NW(a,b)       __gnu_ ## a ## si ## b
  78#define __NDW(a,b)      __gnu_ ## a ## di ## b
  79#else
  80#define __NW(a,b)       __ ## a ## si ## b
  81#define __NDW(a,b)      __ ## a ## di ## b
  82#endif
  83#elif LIBGCC2_UNITS_PER_WORD == 2
  84#define W_TYPE_SIZE (2 * BITS_PER_UNIT)
  85#define Wtype   HItype
  86#define UWtype  UHItype
  87#define HWtype  HItype
  88#define UHWtype UHItype
  89#define DWtype  SItype
  90#define UDWtype USItype
  91#ifdef LIBGCC2_GNU_PREFIX
  92#define __NW(a,b)       __gnu_ ## a ## hi ## b
  93#define __NDW(a,b)      __gnu_ ## a ## si ## b
  94#else
  95#define __NW(a,b)       __ ## a ## hi ## b
  96#define __NDW(a,b)      __ ## a ## si ## b
  97#endif
  98#else
  99#define W_TYPE_SIZE BITS_PER_UNIT
 100#define Wtype   QItype
 101#define UWtype  UQItype
 102#define HWtype  QItype
 103#define UHWtype UQItype
 104#define DWtype  HItype
 105#define UDWtype UHItype
 106#ifdef LIBGCC2_GNU_PREFIX
 107#define __NW(a,b)       __gnu_ ## a ## qi ## b
 108#define __NDW(a,b)      __gnu_ ## a ## hi ## b
 109#else
 110#define __NW(a,b)       __ ## a ## qi ## b
 111#define __NDW(a,b)      __ ## a ## hi ## b
 112#endif
 113#endif
 114
 115typedef int shift_count_type __attribute__((mode (__libgcc_shift_count__)));
 116
 117#if __BYTE_ORDER__ != __ORDER_LITTLE_ENDIAN__
 118        struct DWstruct {Wtype high, low;};
 119#else
 120        struct DWstruct {Wtype low, high;};
 121#endif
 122
 123/* We need this union to unpack/pack DImode values, since we don't have
 124   any arithmetic yet.  Incoming DImode parameters are stored into the
 125   `ll' field, and the unpacked result is read from the struct `s'.  */
 126
 127typedef union {
 128        struct DWstruct s;
 129        DWtype ll;
 130} DWunion;
 131
 132#endif /* __ASM_LIBGCC_H */
 133