path: root/MdePkg/Include/X64/ProcessorBind.h

/** @file
  Processor or Compiler specific defines and types x64 (Intel 64, AMD64).

  Copyright (c) 2006 - 2019, Intel Corporation. All rights reserved.<BR>
  SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#ifndef __PROCESSOR_BIND_H__
#define __PROCESSOR_BIND_H__

///
/// Define the processor type so other code can make processor based choices
///
#define MDE_CPU_X64

//
// Make sure we are using the correct packing rules per EFI specification
//
#if !defined (__GNUC__)
  #pragma pack()
#endif

#if defined (__GNUC__) && defined (__pic__) && !defined (USING_LTO)  && !defined (__APPLE__)
//
// Mark all symbol declarations and references as hidden, meaning they will
// not be subject to symbol preemption. This allows the compiler to refer to
// symbols directly using relative references rather than via the GOT, which
// contains absolute symbol addresses that are subject to runtime relocation.
//
// The LTO linker will not emit GOT based relocations when all symbol
// references can be resolved locally, and so there is no need to set the
// pragma in that case (and doing so will cause other issues).
//
  #pragma GCC visibility push (hidden)
#endif

#if defined (__INTEL_COMPILER)
//
// Disable ICC's remark #869: "Parameter" was never referenced warning.
// This is legal ANSI C code so we disable the remark that is turned on with -Wall
//
  #pragma warning ( disable : 869 )

//
// Disable ICC's remark #1418: external function definition with no prior declaration.
// This is legal ANSI C code so we disable the remark that is turned on with /W4
//
  #pragma warning ( disable : 1418 )

//
// Disable ICC's remark #1419: external declaration in primary source file
// This is legal ANSI C code so we disable the remark that is turned on with /W4
//
  #pragma warning ( disable : 1419 )

//
// Disable ICC's remark #593: "Variable" was set but never used.
// This is legal ANSI C code so we disable the remark that is turned on with /W4
//
  #pragma warning ( disable : 593 )

#endif

#if defined (_MSC_EXTENSIONS)

//
// Disable warning that make it impossible to compile at /W4
// This only works for Microsoft* tools
//

//
// Disabling bitfield type checking warnings.
//
  #pragma warning ( disable : 4214 )

//
// Disabling the unreferenced formal parameter warnings.
//
  #pragma warning ( disable : 4100 )

//
// Disable slightly different base types warning as CHAR8 * can not be set
// to a constant string.
//
  #pragma warning ( disable : 4057 )

//
// ASSERT(FALSE) or while (TRUE) are legal constructs so suppress this warning
//
  #pragma warning ( disable : 4127 )

//
// This warning is caused by functions defined but not used. For precompiled header only.
//
  #pragma warning ( disable : 4505 )

//
// This warning is caused by empty (after preprocessing) source file. For precompiled header only.
//
  #pragma warning ( disable : 4206 )

  #if defined (_MSC_VER) && _MSC_VER >= 1800

//
// Disable these warnings for VS2013.
//

//
// This warning is for potentially uninitialized local variable, and it may cause false
// positive issues in VS2013 and VS2015 build
//
    #pragma warning ( disable : 4701 )

//
// This warning is for potentially uninitialized local pointer variable, and it may cause
// false positive issues in VS2013 and VS2015 build
//
    #pragma warning ( disable : 4703 )

  #endif

#endif

#if defined (_MSC_EXTENSIONS)
//
// use Microsoft C compiler dependent integer width types
//

///
/// 8-byte unsigned value
///
typedef unsigned __int64 UINT64;
///
/// 8-byte signed value
///
typedef __int64 INT64;
///
/// 4-byte unsigned value
///
typedef unsigned __int32 UINT32;
///
/// 4-byte signed value
///
typedef __int32 INT32;
///
/// 2-byte unsigned value
///
typedef unsigned short UINT16;
///
/// 2-byte Character.  Unless otherwise specified all strings are stored in the
/// UTF-16 encoding format as defined by Unicode 2.1 and ISO/IEC 10646 standards.
///
typedef unsigned short CHAR16;
///
/// 2-byte signed value
///
typedef short INT16;
///
/// Logical Boolean.  1-byte value containing 0 for FALSE or a 1 for TRUE.  Other
/// values are undefined.
///
typedef unsigned char BOOLEAN;
///
/// 1-byte unsigned value
///
typedef unsigned char UINT8;
///
/// 1-byte Character
///
typedef char CHAR8;
///
/// 1-byte signed value
///
typedef signed char INT8;
#else
///
/// 8-byte unsigned value
///
typedef unsigned long long UINT64;
///
/// 8-byte signed value
///
typedef long long INT64;
///
/// 4-byte unsigned value
///
typedef unsigned int UINT32;
///
/// 4-byte signed value
///
typedef int INT32;
///
/// 2-byte unsigned value
///
typedef unsigned short UINT16;
///
/// 2-byte Character.  Unless otherwise specified all strings are stored in the
/// UTF-16 encoding format as defined by Unicode 2.1 and ISO/IEC 10646 standards.
///
typedef unsigned short CHAR16;
///
/// 2-byte signed value
///
typedef short INT16;
///
/// Logical Boolean.  1-byte value containing 0 for FALSE or a 1 for TRUE.  Other
/// values are undefined.
///
typedef unsigned char BOOLEAN;
///
/// 1-byte unsigned value
///
typedef unsigned char UINT8;
///
/// 1-byte Character
///
typedef char CHAR8;
///
/// 1-byte signed value
///
typedef signed char INT8;
#endif

///
/// Unsigned value of native width.  (4 bytes on supported 32-bit processor instructions,
/// 8 bytes on supported 64-bit processor instructions)
///
typedef UINT64 UINTN;
///
/// Signed value of native width.  (4 bytes on supported 32-bit processor instructions,
/// 8 bytes on supported 64-bit processor instructions)
///
typedef INT64 INTN;

//
// Processor specific defines
//

///
/// A value of native width with the highest bit set.
///
#define MAX_BIT  0x8000000000000000ULL
///
/// A value of native width with the two highest bits set.
///
#define MAX_2_BITS  0xC000000000000000ULL

///
/// Maximum legal x64 address
///
#define MAX_ADDRESS  0xFFFFFFFFFFFFFFFFULL

///
/// Maximum usable address at boot time
///
#define MAX_ALLOC_ADDRESS  MAX_ADDRESS

///
/// Maximum legal x64 INTN and UINTN values.
///
#define MAX_INTN   ((INTN)0x7FFFFFFFFFFFFFFFULL)
#define MAX_UINTN  ((UINTN)0xFFFFFFFFFFFFFFFFULL)

///
/// Minimum legal x64 INTN value.
///
#define MIN_INTN  (((INTN)-9223372036854775807LL) - 1)

///
/// The stack alignment required for x64
///
#define CPU_STACK_ALIGNMENT  16

///
/// Page allocation granularity for x64
///
#define DEFAULT_PAGE_ALLOCATION_GRANULARITY  (0x1000)
#define RUNTIME_PAGE_ALLOCATION_GRANULARITY  (0x1000)

//
// Modifier to ensure that all protocol member functions and EFI intrinsics
// use the correct C calling convention. All protocol member functions and
// EFI intrinsics are required to modify their member functions with EFIAPI.
//
#ifdef EFIAPI
///
/// If EFIAPI is already defined, then we use that definition.
///
#elif defined (_MSC_EXTENSIONS)
///
/// Microsoft* compiler specific method for EFIAPI calling convention.
///
#define EFIAPI  __cdecl
#elif defined (__GNUC__)
///
/// Define the standard calling convention regardless of optimization level.
/// The GCC support assumes a GCC compiler that supports the EFI ABI. The EFI
/// ABI is much closer to the x64 Microsoft* ABI than standard x64 (x86-64)
/// GCC ABI. Thus a standard x64 (x86-64) GCC compiler can not be used for
/// x64. Warning the assembly code in the MDE x64 does not follow the correct
/// ABI for the standard x64 (x86-64) GCC.
///
#define EFIAPI
#else
///
/// The default for a non Microsoft* or GCC compiler is to assume the EFI ABI
/// is the standard.
///
#define EFIAPI
#endif

#if defined (__GNUC__) || defined (__clang__)
///
/// For GNU assembly code, .global or .globl can declare global symbols.
/// Define this macro to unify the usage.
///
#define ASM_GLOBAL  .globl
#endif

/**
  Return the pointer to the first instruction of a function given a function pointer.
  On x64 CPU architectures, these two pointer values are the same,
  so the implementation of this macro is very simple.

  @param  FunctionPointer   A pointer to a function.

  @return The pointer to the first instruction of a function given a function pointer.

**/
#define FUNCTION_ENTRY_POINT(FunctionPointer)  (VOID *)(UINTN)(FunctionPointer)

#ifndef __USER_LABEL_PREFIX__
#define __USER_LABEL_PREFIX__
#endif

#endif