xref: /freebsd/stand/efi/include/arm/efibind.h (revision 7a1bc422d109a7cee56dcfbac616eda613c1c43e)

/*++

Copyright (c) 2004 - 2012, Intel Corporation. All rights reserved.

This program and the accompanying materials
are licensed and made available under the terms and conditions of the BSD License
which accompanies this distribution.  The full text of the license may be found at
http://opensource.org/licenses/bsd-license.php

THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.

Module Name:

  EfiBind.h

Abstract:

  Processor or Compiler specific defines and types for IA-32.
  We are using the ANSI C 2000 _t type definitions for basic types.
  This it technically a violation of the coding standard, but they
  are used to make EfiTypes.h portable. Code other than EfiTypes.h
  should never use any ANSI C 2000 _t integer types.

--*/

#ifndef _EFI_BIND_H_
#define _EFI_BIND_H_


#define EFI_DRIVER_ENTRY_POINT(InitFunction)
#define EFI_APPLICATION_ENTRY_POINT EFI_DRIVER_ENTRY_POINT


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


#define EFIERR(a)           (0x80000000 | a)
#define EFI_ERROR_MASK      0x80000000
#define EFIERR_OEM(a)       (0xc0000000 | a)

//
// Processor specific defines
//
#define EFI_MAX_BIT       0x80000000
#define MAX_2_BITS        0xC0000000

//
// Maximum legal IA-32 address
//
#define EFI_MAX_ADDRESS   0xFFFFFFFF

//
//  Bad pointer value to use in check builds.
//  if you see this value you are using uninitialized or free'ed data
//
#define EFI_BAD_POINTER          0xAFAFAFAF
#define EFI_BAD_POINTER_AS_BYTE  0xAF

#define EFI_DEADLOOP()    { volatile UINTN __iii; __iii = 1; while (__iii); }

//
// Inject a break point in the code to assist debugging for NT Emulation Environment
// For real hardware, just put in a halt loop. Don't do a while(1) because the
// compiler will optimize away the rest of the function following, so that you run out in
// the weeds if you skip over it with a debugger.
//
#define EFI_BREAKPOINT EFI_DEADLOOP()


//
// Memory Fence forces serialization, and is needed to support out of order
//  memory transactions. The Memory Fence is mainly used to make sure IO
//  transactions complete in a deterministic sequence, and to syncronize locks
//  an other MP code. Currently no memory fencing is required.
//
#define MEMORY_FENCE()

//
// Some compilers don't support the forward reference construct:
//  typedef struct XXXXX. The forward reference is required for
//  ANSI compatibility.
//
// The following macro provide a workaround for such cases.
//


#ifdef EFI_NO_INTERFACE_DECL
  #define EFI_FORWARD_DECLARATION(x)
#else
  #define EFI_FORWARD_DECLARATION(x) typedef struct _##x x
#endif


//
// Some C compilers optimize the calling conventions to increase performance.
// EFIAPI is used to make all public APIs follow the standard C calling
// convention.
//
#define EFIAPI



//
// For symbol name in GNU assembly code, an extra "_" is necessary
//
#if defined(__GNUC__)
  ///
  /// Private worker functions for ASM_PFX()
  ///
  #define _CONCATENATE(a, b)  __CONCATENATE(a, b)
  #define __CONCATENATE(a, b) a ## b

  ///
  /// The __USER_LABEL_PREFIX__ macro predefined by GNUC represents the prefix
  /// on symbols in assembly language.
  ///
  #define ASM_PFX(name) _CONCATENATE (__USER_LABEL_PREFIX__, name)

#endif

#define INTERFACE_DECL(x) struct x

#endif