lib/libc/arch/arm/softfloat/arm-gcc.h

   1 /* $NetBSD: arm-gcc.h,v 1.4 2013/01/26 07:08:14 matt Exp $ */
   2
   3 /*
   4 -------------------------------------------------------------------------------
   5 One of the macros `BIGENDIAN' or `LITTLEENDIAN' must be defined.
   6 -------------------------------------------------------------------------------
   7 */
   8 #ifdef __ARMEB__
   9 #define BIGENDIAN
  10 #else
  11 #define LITTLEENDIAN
  12 #endif
  13
  14 /*
  15 -------------------------------------------------------------------------------
  16 The macro `BITS64' can be defined to indicate that 64-bit integer types are
  17 supported by the compiler.
  18 -------------------------------------------------------------------------------
  19 */
  20 #define BITS64
  21
  22 /*
  23 -------------------------------------------------------------------------------
  24 Each of the following `typedef's defines the most convenient type that holds
  25 integers of at least as many bits as specified.  For example, `uint8' should
  26 be the most convenient type that can hold unsigned integers of as many as
  27 8 bits.  The `flag' type must be able to hold either a 0 or 1.  For most
  28 implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
  29 to the same as `int'.
  30 -------------------------------------------------------------------------------
  31 */
  32 typedef int flag;
  33 typedef int uint8;
  34 typedef int int8;
  35 typedef int uint16;
  36 typedef int int16;
  37 typedef unsigned int uint32;
  38 typedef signed int int32;
  39 #ifdef BITS64
  40 typedef unsigned long long int uint64;
  41 typedef signed long long int int64;
  42 #endif
  43
  44 /*
  45 -------------------------------------------------------------------------------
  46 Each of the following `typedef's defines a type that holds integers
  47 of _exactly_ the number of bits specified.  For instance, for most
  48 implementation of C, `bits16' and `sbits16' should be `typedef'ed to
  49 `unsigned short int' and `signed short int' (or `short int'), respectively.
  50 -------------------------------------------------------------------------------
  51 */
  52 typedef unsigned char bits8;
  53 typedef signed char sbits8;
  54 typedef unsigned short int bits16;
  55 typedef signed short int sbits16;
  56 typedef unsigned int bits32;
  57 typedef signed int sbits32;
  58 #ifdef BITS64
  59 typedef unsigned long long int bits64;
  60 typedef signed long long int sbits64;
  61 #endif
  62
  63 #ifdef BITS64
  64 /*
  65 -------------------------------------------------------------------------------
  66 The `LIT64' macro takes as its argument a textual integer literal and
  67 if necessary ``marks'' the literal as having a 64-bit integer type.
  68 For example, the GNU C Compiler (`gcc') requires that 64-bit literals be
  69 appended with the letters `LL' standing for `long long', which is `gcc's
  70 name for the 64-bit integer type.  Some compilers may allow `LIT64' to be
  71 defined as the identity macro:  `#define LIT64( a ) a'.
  72 -------------------------------------------------------------------------------
  73 */
  74 #define LIT64( a ) a##ULL
  75 #endif
  76
  77 /*
  78 -------------------------------------------------------------------------------
  79 The macro `INLINE' can be used before functions that should be inlined.  If
  80 a compiler does not support explicit inlining, this macro should be defined
  81 to be `static'.
  82 -------------------------------------------------------------------------------
  83 */
  84 #define INLINE static inline
  85
  86 /*
  87 -------------------------------------------------------------------------------
  88 The ARM FPA is odd in that it stores doubles high-order word first, no matter
  89 what the endianness of the CPU.  VFP is sane.
  90 -------------------------------------------------------------------------------
  91 */
  92 #if defined(SOFTFLOAT_FOR_GCC)
  93 #if defined(__VFP_FP__) || defined(__ARMEB__)
  94 #define FLOAT64_DEMANGLE(a)     (a)
  95 #define FLOAT64_MANGLE(a)       (a)
  96 #else
  97 #define FLOAT64_DEMANGLE(a)     (((a) << 32) | ((a) >> 32))
  98 #define FLOAT64_MANGLE(a)       FLOAT64_DEMANGLE(a)
  99 #endif
 100 #endif