From 1760cf81e4b1847c6823ea3514a78dd120e19b6e Mon Sep 17 00:00:00 2001 From: Guo Mang Date: Thu, 22 Dec 2016 15:57:14 +0800 Subject: MdePkg: Move to new location Contributed-under: TianoCore Contribution Agreement 1.0 Signed-off-by: Guo Mang --- Core/MdePkg/Include/Protocol/Ebc.h | 153 +++++++++++++++++++++++++++++++++++++ 1 file changed, 153 insertions(+) create mode 100644 Core/MdePkg/Include/Protocol/Ebc.h (limited to 'Core/MdePkg/Include/Protocol/Ebc.h') diff --git a/Core/MdePkg/Include/Protocol/Ebc.h b/Core/MdePkg/Include/Protocol/Ebc.h new file mode 100644 index 0000000000..969bb5496b --- /dev/null +++ b/Core/MdePkg/Include/Protocol/Ebc.h @@ -0,0 +1,153 @@ +/** @file + Describes the protocol interface to the EBC interpreter. + + Copyright (c) 2006 - 2008, 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. + +**/ + +#ifndef __EFI_EBC_PROTOCOL_H__ +#define __EFI_EBC_PROTOCOL_H__ + +#define EFI_EBC_INTERPRETER_PROTOCOL_GUID \ + { \ + 0x13AC6DD1, 0x73D0, 0x11D4, {0xB0, 0x6B, 0x00, 0xAA, 0x00, 0xBD, 0x6D, 0xE7 } \ + } + +/// +/// Protocol Guid Name defined in spec. +/// +#define EFI_EBC_PROTOCOL_GUID EFI_EBC_INTERPRETER_PROTOCOL_GUID + +/// +/// Define for forward reference. +/// +typedef struct _EFI_EBC_PROTOCOL EFI_EBC_PROTOCOL; + +/** + Creates a thunk for an EBC entry point, returning the address of the thunk. + + A PE32+ EBC image, like any other PE32+ image, contains an optional header that specifies the + entry point for image execution. However, for EBC images, this is the entry point of EBC + instructions, so is not directly executable by the native processor. Therefore, when an EBC image is + loaded, the loader must call this service to get a pointer to native code (thunk) that can be executed, + which will invoke the interpreter to begin execution at the original EBC entry point. + + @param This A pointer to the EFI_EBC_PROTOCOL instance. + @param ImageHandle Handle of image for which the thunk is being created. + @param EbcEntryPoint Address of the actual EBC entry point or protocol service the thunk should call. + @param Thunk Returned pointer to a thunk created. + + @retval EFI_SUCCESS The function completed successfully. + @retval EFI_INVALID_PARAMETER Image entry point is not 2-byte aligned. + @retval EFI_OUT_OF_RESOURCES Memory could not be allocated for the thunk. +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_EBC_CREATE_THUNK)( + IN EFI_EBC_PROTOCOL *This, + IN EFI_HANDLE ImageHandle, + IN VOID *EbcEntryPoint, + OUT VOID **Thunk + ); + +/** + Called prior to unloading an EBC image from memory. + + This function is called after an EBC image has exited, but before the image is actually unloaded. It + is intended to provide the interpreter with the opportunity to perform any cleanup that may be + necessary as a result of loading and executing the image. + + @param This A pointer to the EFI_EBC_PROTOCOL instance. + @param ImageHandle Image handle of the EBC image that is being unloaded from memory. + + @retval EFI_SUCCESS The function completed successfully. + @retval EFI_INVALID_PARAMETER Image handle is not recognized as belonging + to an EBC image that has been executed. +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_EBC_UNLOAD_IMAGE)( + IN EFI_EBC_PROTOCOL *This, + IN EFI_HANDLE ImageHandle + ); + +/** + This is the prototype for the Flush callback routine. A pointer to a routine + of this type is passed to the EBC EFI_EBC_REGISTER_ICACHE_FLUSH protocol service. + + @param Start The beginning physical address to flush from the processor's instruction cache. + @param Length The number of bytes to flush from the processor's instruction cache. + + @retval EFI_SUCCESS The function completed successfully. + +**/ +typedef +EFI_STATUS +(EFIAPI *EBC_ICACHE_FLUSH)( + IN EFI_PHYSICAL_ADDRESS Start, + IN UINT64 Length + ); + +/** + Registers a callback function that the EBC interpreter calls to flush + the processor instruction cache following creation of thunks. + + @param This A pointer to the EFI_EBC_PROTOCOL instance. + @param Flush Pointer to a function of type EBC_ICACH_FLUSH. + + @retval EFI_SUCCESS The function completed successfully. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_EBC_REGISTER_ICACHE_FLUSH)( + IN EFI_EBC_PROTOCOL *This, + IN EBC_ICACHE_FLUSH Flush + ); + +/** + Called to get the version of the interpreter. + + This function is called to get the version of the loaded EBC interpreter. The value and format of the + returned version is identical to that returned by the EBC BREAK 1 instruction. + + @param This A pointer to the EFI_EBC_PROTOCOL instance. + @param Version Pointer to where to store the returned version of the interpreter. + + @retval EFI_SUCCESS The function completed successfully. + @retval EFI_INVALID_PARAMETER Version pointer is NULL. + +**/ +typedef +EFI_STATUS +(EFIAPI *EFI_EBC_GET_VERSION)( + IN EFI_EBC_PROTOCOL *This, + IN OUT UINT64 *Version + ); + +/// +/// The EFI EBC protocol provides services to load and execute EBC images, which will typically be +/// loaded into option ROMs. The image loader will load the EBC image, perform standard relocations, +/// and invoke the CreateThunk() service to create a thunk for the EBC image's entry point. The +/// image can then be run using the standard EFI start image services. +/// +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 -- cgit v1.2.3