ArmPkg/Library/ArmSoftFloatLib/arm-gcc.h

   1 /** @file
   2
   3   Copyright (c) 2014, ARM Limited. All rights reserved.
   4
   5   This program and the accompanying materials
   6   are licensed and made available under the terms and conditions of the BSD License
   7   which accompanies this distribution.  The full text of the license may be found at
   8   http://opensource.org/licenses/bsd-license.php
   9
  10   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  11   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  12
  13 **/
  14
  15 /* $NetBSD: arm-gcc.h,v 1.4 2013/01/26 07:08:14 matt Exp $ */
  16
  17 /*
  18 -------------------------------------------------------------------------------
  19 One of the macros `BIGENDIAN' or `LITTLEENDIAN' must be defined.
  20 -------------------------------------------------------------------------------
  21 */
  22 #ifdef __ARMEB__
  23 #define BIGENDIAN
  24 #else
  25 #define LITTLEENDIAN
  26 #endif
  27
  28 /*
  29 -------------------------------------------------------------------------------
  30 The macro `BITS64' can be defined to indicate that 64-bit integer types are
  31 supported by the compiler.
  32 -------------------------------------------------------------------------------
  33 */
  34 #define BITS64
  35
  36 /*
  37 -------------------------------------------------------------------------------
  38 Each of the following `typedef's defines the most convenient type that holds
  39 integers of at least as many bits as specified.  For example, `uint8' should
  40 be the most convenient type that can hold unsigned integers of as many as
  41 8 bits.  The `flag' type must be able to hold either a 0 or 1.  For most
  42 implementations of C, `flag', `uint8', and `int8' should all be `typedef'ed
  43 to the same as `int'.
  44 -------------------------------------------------------------------------------
  45 */
  46 typedef int flag;
  47 typedef int uint8;
  48 typedef int int8;
  49 typedef int uint16;
  50 typedef int int16;
  51 typedef unsigned int uint32;
  52 typedef signed int int32;
  53 #ifdef BITS64
  54 typedef unsigned long long int uint64;
  55 typedef signed long long int int64;
  56 #endif
  57
  58 /*
  59 -------------------------------------------------------------------------------
  60 Each of the following `typedef's defines a type that holds integers
  61 of _exactly_ the number of bits specified.  For instance, for most
  62 implementation of C, `bits16' and `sbits16' should be `typedef'ed to
  63 `unsigned short int' and `signed short int' (or `short int'), respectively.
  64 -------------------------------------------------------------------------------
  65 */
  66 typedef unsigned char bits8;
  67 typedef signed char sbits8;
  68 typedef unsigned short int bits16;
  69 typedef signed short int sbits16;
  70 typedef unsigned int bits32;
  71 typedef signed int sbits32;
  72 #ifdef BITS64
  73 typedef unsigned long long int bits64;
  74 typedef signed long long int sbits64;
  75 #endif
  76
  77 #ifdef BITS64
  78 /*
  79 -------------------------------------------------------------------------------
  80 The `LIT64' macro takes as its argument a textual integer literal and
  81 if necessary ``marks'' the literal as having a 64-bit integer type.
  82 For example, the GNU C Compiler (`gcc') requires that 64-bit literals be
  83 appended with the letters `LL' standing for `long long', which is `gcc's
  84 name for the 64-bit integer type.  Some compilers may allow `LIT64' to be
  85 defined as the identity macro:  `#define LIT64( a ) a'.
  86 -------------------------------------------------------------------------------
  87 */
  88 #define LIT64( a ) a##ULL
  89 #endif
  90
  91 /*
  92 -------------------------------------------------------------------------------
  93 The macro `INLINE' can be used before functions that should be inlined.  If
  94 a compiler does not support explicit inlining, this macro should be defined
  95 to be `static'.
  96 -------------------------------------------------------------------------------
  97 */
  98 #define INLINE static inline
  99
 100 /*
 101 -------------------------------------------------------------------------------
 102 The ARM FPA is odd in that it stores doubles high-order word first, no matter
 103 what the endianness of the CPU.  VFP is sane.
 104 -------------------------------------------------------------------------------
 105 */
 106 #if defined(SOFTFLOAT_FOR_GCC)
 107 #if defined(__VFP_FP__) || defined(__ARMEB__)
 108 #define FLOAT64_DEMANGLE(a) (a)
 109 #define FLOAT64_MANGLE(a)   (a)
 110 #else
 111 #define FLOAT64_DEMANGLE(a) (((a) << 32) | ((a) >> 32))
 112 #define FLOAT64_MANGLE(a)   FLOAT64_DEMANGLE(a)
 113 #endif
 114 #endif