mirror of https://github.com/acidanthera/audk.git
184 lines
4.7 KiB
C
184 lines
4.7 KiB
C
/*++
|
|
|
|
Copyright (c) 2004, 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:
|
|
|
|
Ebc.h
|
|
|
|
Abstract:
|
|
|
|
Describes the protocol interface to the EBC interpreter.
|
|
|
|
--*/
|
|
|
|
#ifndef _EBC_H_
|
|
#define _EBC_H_
|
|
|
|
#define EFI_EBC_INTERPRETER_PROTOCOL_GUID \
|
|
{ \
|
|
0x13AC6DD1, 0x73D0, 0x11D4, {0xB0, 0x6B, 0x00, 0xAA, 0x00, 0xBD, 0x6D, 0xE7} \
|
|
}
|
|
|
|
//
|
|
// Define for forward reference.
|
|
//
|
|
EFI_FORWARD_DECLARATION (EFI_EBC_PROTOCOL);
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Create a thunk for an image entry point. In short, given the physical address
|
|
of the entry point for a loaded image, create a thunk that does some
|
|
fixup of arguments (and perform any other necessary overhead) and then
|
|
calls the original entry point. The caller can then use the returned pointer
|
|
to the created thunk as the new entry point to image.
|
|
|
|
Arguments:
|
|
|
|
This - protocol instance pointer
|
|
ImageHandle - handle to the image. The EBC interpreter may use this to keep
|
|
track of any resource allocations performed in loading and
|
|
executing the image.
|
|
EbcEntryPoint - the entry point for the image (as defined in the file header)
|
|
Thunk - pointer to thunk pointer where the address of the created
|
|
thunk is returned.
|
|
|
|
Returns:
|
|
|
|
Standard EFI_STATUS
|
|
|
|
--*/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_EBC_CREATE_THUNK) (
|
|
IN EFI_EBC_PROTOCOL * This,
|
|
IN EFI_HANDLE ImageHandle,
|
|
IN VOID *EbcEntryPoint,
|
|
OUT VOID **Thunk
|
|
);
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
Perform any cleanup necessary when an image is unloaded. Basically it gives
|
|
the EBC interpreter the chance to free up any resources allocated during
|
|
load and execution of an EBC image.
|
|
|
|
Arguments:
|
|
|
|
This - protocol instance pointer
|
|
ImageHandle - the handle of the image being unloaded.
|
|
|
|
Returns:
|
|
|
|
Standard EFI_STATUS.
|
|
|
|
--*/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_EBC_UNLOAD_IMAGE) (
|
|
IN EFI_EBC_PROTOCOL * This,
|
|
IN EFI_HANDLE ImageHandle
|
|
);
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
The I-Cache-flush registration service takes a pointer to a function to
|
|
call to flush the I-Cache. Here's the prototype for that function pointer.
|
|
|
|
Arguments:
|
|
|
|
Start - physical start address of CPU instruction cache to flush.
|
|
Length - how many bytes to flush of the instruction cache.
|
|
|
|
Returns:
|
|
|
|
Standard EFI_STATUS.
|
|
|
|
--*/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EBC_ICACHE_FLUSH) (
|
|
IN EFI_PHYSICAL_ADDRESS Start,
|
|
IN UINT64 Length
|
|
);
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine is called by the core firmware to provide the EBC driver with
|
|
a function to call to flush the CPU's instruction cache following creation
|
|
of a thunk. It is not required.
|
|
|
|
Arguments:
|
|
|
|
This - protocol instance pointer
|
|
Flush - pointer to the function to call to flush the CPU instruction
|
|
cache.
|
|
|
|
Returns:
|
|
|
|
Standard EFI_STATUS.
|
|
|
|
--*/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_EBC_REGISTER_ICACHE_FLUSH) (
|
|
IN EFI_EBC_PROTOCOL * This,
|
|
IN EBC_ICACHE_FLUSH Flush
|
|
);
|
|
|
|
/*++
|
|
|
|
Routine Description:
|
|
|
|
This routine can be called to get the VM revision. It returns the same
|
|
value as the EBC BREAK 1 instruction returns.
|
|
|
|
Arguments:
|
|
|
|
This - protocol instance pointer
|
|
Version - pointer to where to return the VM version
|
|
|
|
Returns:
|
|
|
|
Standard EFI_STATUS.
|
|
|
|
--*/
|
|
typedef
|
|
EFI_STATUS
|
|
(EFIAPI *EFI_EBC_GET_VERSION) (
|
|
IN EFI_EBC_PROTOCOL * This,
|
|
IN OUT UINT64 *Version
|
|
);
|
|
|
|
//
|
|
// Prototype for the actual EBC protocol interface
|
|
//
|
|
struct _EFI_EBC_PROTOCOL {
|
|
EFI_EBC_CREATE_THUNK CreateThunk;
|
|
EFI_EBC_UNLOAD_IMAGE UnloadImage;
|
|
EFI_EBC_REGISTER_ICACHE_FLUSH RegisterICacheFlush;
|
|
EFI_EBC_GET_VERSION GetVersion;
|
|
};
|
|
|
|
//
|
|
// Extern the global EBC protocol GUID
|
|
//
|
|
extern EFI_GUID gEfiEbcProtocolGuid;
|
|
|
|
#endif
|