MdePkg/Include/Arm/ProcessorBind.h

   1 /** @file
   2   Processor or Compiler specific defines and types for ARM.
   3
   4   Copyright (c) 2006 - 2013, Intel Corporation. All rights reserved.<BR>
   5   Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
   6   This program and the accompanying materials
   7   are licensed and made available under the terms and conditions of the BSD License
   8   which accompanies this distribution.  The full text of the license may be found at
   9   http://opensource.org/licenses/bsd-license.php
  10
  11   THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
  12   WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
  13
  14 **/
  15
  16 #ifndef __PROCESSOR_BIND_H__
  17 #define __PROCESSOR_BIND_H__
  18
  19 ///
  20 /// Define the processor type so other code can make processor based choices
  21 ///
  22 #define MDE_CPU_ARM
  23
  24 //
  25 // Make sure we are using the correct packing rules per EFI specification
  26 //
  27 #ifndef __GNUC__
  28 #pragma pack()
  29 #endif
  30
  31 #if _MSC_EXTENSIONS
  32   //
  33   // use Microsoft* C complier dependent integer width types
  34   //
  35   typedef unsigned __int64    UINT64;
  36   typedef __int64             INT64;
  37   typedef unsigned __int32    UINT32;
  38   typedef __int32             INT32;
  39   typedef unsigned short      UINT16;
  40   typedef unsigned short      CHAR16;
  41   typedef short               INT16;
  42   typedef unsigned char       BOOLEAN;
  43   typedef unsigned char       UINT8;
  44   typedef char                CHAR8;
  45   typedef signed char         INT8;
  46 #else
  47   //
  48   // Assume standard ARM alignment.
  49   // Need to check portability of long long
  50   //
  51   typedef unsigned long long  UINT64;
  52   typedef long long           INT64;
  53   typedef unsigned int        UINT32;
  54   typedef int                 INT32;
  55   typedef unsigned short      UINT16;
  56   typedef unsigned short      CHAR16;
  57   typedef short               INT16;
  58   typedef unsigned char       BOOLEAN;
  59   typedef unsigned char       UINT8;
  60   typedef char                CHAR8;
  61   typedef signed char         INT8;
  62 #endif
  63
  64 ///
  65 /// Unsigned value of native width.  (4 bytes on supported 32-bit processor instructions,
  66 /// 8 bytes on supported 64-bit processor instructions)
  67 ///
  68 typedef UINT32  UINTN;
  69
  70 ///
  71 /// Signed value of native width.  (4 bytes on supported 32-bit processor instructions,
  72 /// 8 bytes on supported 64-bit processor instructions)
  73 ///
  74 typedef INT32   INTN;
  75
  76 //
  77 // Processor specific defines
  78 //
  79
  80 ///
  81 /// A value of native width with the highest bit set.
  82 ///
  83 #define MAX_BIT      0x80000000
  84
  85 ///
  86 /// A value of native width with the two highest bits set.
  87 ///
  88 #define MAX_2_BITS   0xC0000000
  89
  90 ///
  91 /// Maximum legal ARM address
  92 ///
  93 #define MAX_ADDRESS  0xFFFFFFFF
  94
  95 ///
  96 /// Maximum legal ARM INTN and UINTN values.
  97 ///
  98 #define MAX_INTN   ((INTN)0x7FFFFFFF)
  99 #define MAX_UINTN  ((UINTN)0xFFFFFFFF)
 100
 101 ///
 102 /// The stack alignment required for ARM
 103 ///
 104 #define CPU_STACK_ALIGNMENT  sizeof(UINT64)
 105
 106 //
 107 // Modifier to ensure that all protocol member functions and EFI intrinsics
 108 // use the correct C calling convention. All protocol member functions and
 109 // EFI intrinsics are required to modify their member functions with EFIAPI.
 110 //
 111 #define EFIAPI
 112
 113 #if defined(__GNUC__)
 114   ///
 115   /// For GNU assembly code, .global or .globl can declare global symbols.
 116   /// Define this macro to unify the usage.
 117   ///
 118   #define ASM_GLOBAL .globl
 119
 120   #if !defined(__APPLE__)
 121     ///
 122     /// ARM EABI defines that the linker should not manipulate call relocations
 123     /// (do bl/blx conversion) unless the target symbol has function type.
 124     /// CodeSourcery 2010.09 started requiring the .type to function properly
 125     ///
 126     #define INTERWORK_FUNC(func__)   .type ASM_PFX(func__), %function
 127
 128     #define GCC_ASM_EXPORT(func__)  \
 129              .global  _CONCATENATE (__USER_LABEL_PREFIX__, func__)    ;\
 130              .type ASM_PFX(func__), %function
 131
 132     #define GCC_ASM_IMPORT(func__)  \
 133              .extern  _CONCATENATE (__USER_LABEL_PREFIX__, func__)
 134
 135   #else
 136     //
 137     // .type not supported by Apple Xcode tools
 138     //
 139     #define INTERWORK_FUNC(func__)
 140
 141     #define GCC_ASM_EXPORT(func__)  \
 142              .globl  _CONCATENATE (__USER_LABEL_PREFIX__, func__)    \
 143
 144     #define GCC_ASM_IMPORT(name)
 145
 146   #endif
 147 #endif
 148
 149 /**
 150   Return the pointer to the first instruction of a function given a function pointer.
 151   On ARM CPU architectures, these two pointer values are the same,
 152   so the implementation of this macro is very simple.
 153
 154   @param  FunctionPointer   A pointer to a function.
 155
 156   @return The pointer to the first instruction of a function given a function pointer.
 157
 158 **/
 159 #define FUNCTION_ENTRY_POINT(FunctionPointer) (VOID *)(UINTN)(FunctionPointer)
 160
 161 #endif
 162
 163