ArmPkg/Library/ArmSoftFloatLib/arm-gcc.h

   1 /** @file
   2
   3   Copyright (c) 2014, ARM Limited. All rights reserved.
   4
   5   SPDX-License-Identifier: BSD-2-Clause-Patent
   6
   7 **/
   8
   9 /* $NetBSD: arm-gcc.h,v 1.4 2013/01/26 07:08:14 matt Exp $ */
  10
  11 /*
  12 -------------------------------------------------------------------------------
  13 One of the macros `BIGENDIAN' or `LITTLEENDIAN' must be defined.
  14 -------------------------------------------------------------------------------
  15 */
  16 #ifdef __ARMEB__
  17 #define BIGENDIAN
  18 #else
  19 #define LITTLEENDIAN
  20 #endif
  21
  22 /*
  23 -------------------------------------------------------------------------------
  24 The macro `BITS64' can be defined to indicate that 64-bit integer types are
  25 supported by the compiler.
  26 -------------------------------------------------------------------------------
  27 */
  28 #define BITS64
  29
  30 /*
  31 -------------------------------------------------------------------------------
  32 Each of the following `typedef's defines the most convenient type that holds
  33 integers of at least as many bits as specified.  For example, `uint8' should
  34 be the most convenient type that can hold unsigned integers of as many as
  35 8 bits.  The `flag' type must be able to hold either a 0 or 1.  For most
  36 implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
  37 to the same as `int'.
  38 -------------------------------------------------------------------------------
  39 */
  40 typedef int flag;
  41 typedef int uint8;
  42 typedef int int8;
  43 typedef int uint16;
  44 typedef int int16;
  45 typedef unsigned int uint32;
  46 typedef signed int int32;
  47 #ifdef BITS64
  48 typedef unsigned long long int uint64;
  49 typedef signed long long int int64;
  50 #endif
  51
  52 /*
  53 -------------------------------------------------------------------------------
  54 Each of the following `typedef's defines a type that holds integers
  55 of _exactly_ the number of bits specified.  For instance, for most
  56 implementation of C, `bits16' and `sbits16' should be `typedef'ed to
  57 `unsigned short int' and `signed short int' (or `short int'), respectively.
  58 -------------------------------------------------------------------------------
  59 */
  60 typedef unsigned char bits8;
  61 typedef signed char sbits8;
  62 typedef unsigned short int bits16;
  63 typedef signed short int sbits16;
  64 typedef unsigned int bits32;
  65 typedef signed int sbits32;
  66 #ifdef BITS64
  67 typedef unsigned long long int bits64;
  68 typedef signed long long int sbits64;
  69 #endif
  70
  71 #ifdef BITS64
  72 /*
  73 -------------------------------------------------------------------------------
  74 The `LIT64' macro takes as its argument a textual integer literal and
  75 if necessary ``marks'' the literal as having a 64-bit integer type.
  76 For example, the GNU C Compiler (`gcc') requires that 64-bit literals be
  77 appended with the letters `LL' standing for `long long', which is `gcc's
  78 name for the 64-bit integer type.  Some compilers may allow `LIT64' to be
  79 defined as the identity macro:  `#define LIT64( a ) a'.
  80 -------------------------------------------------------------------------------
  81 */
  82 #define LIT64( a ) a##ULL
  83 #endif
  84
  85 /*
  86 -------------------------------------------------------------------------------
  87 The macro `INLINE' can be used before functions that should be inlined.  If
  88 a compiler does not support explicit inlining, this macro should be defined
  89 to be `static'.
  90 -------------------------------------------------------------------------------
  91 */
  92 #define INLINE static inline
  93
  94 /*
  95 -------------------------------------------------------------------------------
  96 The ARM FPA is odd in that it stores doubles high-order word first, no matter
  97 what the endianness of the CPU.  VFP is sane.
  98 -------------------------------------------------------------------------------
  99 */
 100 #if defined(SOFTFLOAT_FOR_GCC)
 101 #if defined(__VFP_FP__) || defined(__ARMEB__)
 102 #define FLOAT64_DEMANGLE(a) (a)
 103 #define FLOAT64_MANGLE(a)   (a)
 104 #else
 105 #define FLOAT64_DEMANGLE(a) (((a) << 32) | ((a) >> 32))
 106 #define FLOAT64_MANGLE(a)   FLOAT64_DEMANGLE(a)
 107 #endif
 108 #endif