mirror of https://github.com/acidanthera/audk.git
138 lines
3.4 KiB
C
138 lines
3.4 KiB
C
/**@file
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Copyright (c) 2006, Intel Corporation
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All rights reserved. This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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Module Name:
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PeiUnixPeCoffExtraActionLib.c
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Abstract:
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Provides services to perform additional actions to relocate and unload
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PE/Coff image for UNIX environment specific purpose such as souce level debug.
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This version only works for PEI phase
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**/
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#include <PiPei.h>
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#include <Ppi/UnixThunk.h>
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#include <FrameworkModuleBase.h>
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#include <Library/PeCoffLib.h>
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#include <Library/PeiServicesLib.h>
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#include <Library/DebugLib.h>
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#include <Library/BaseLib.h>
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#include <Library/PeCoffExtraActionLib.h>
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//
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// Cache of UnixThunk protocol
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//
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EFI_UNIX_THUNK_PROTOCOL *mUnix = NULL;
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/**
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The function caches the pointer of the WinNT thunk functions
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It will ASSERT() if Unix thunk ppi is not installed.
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@retval EFI_SUCCESS WinNT thunk protocol is found and cached.
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**/
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EFI_STATUS
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EFIAPI
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UnixPeCoffGetUnixThunkStucture (
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)
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{
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PEI_UNIX_THUNK_PPI *UnixThunkPpi;
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EFI_STATUS Status;
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//
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// Locate Unix ThunkPpi for retrieving standard output handle
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//
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Status = PeiServicesLocatePpi (
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&gPeiUnixThunkPpiGuid,
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0,
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NULL,
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(VOID **) &UnixThunkPpi
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);
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ASSERT_EFI_ERROR (Status);
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mUnix = (EFI_UNIX_THUNK_PROTOCOL *) UnixThunkPpi->UnixThunk ();
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return EFI_SUCCESS;
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}
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/**
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Applies additional actions to relocate fixups to a PE/COFF image.
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Generally this function is called after sucessfully Applying relocation fixups
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to a PE/COFF image for some specicial purpose.
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@param ImageContext Pointer to the image context structure that describes the PE/COFF
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image that is being relocated.
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**/
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VOID
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EFIAPI
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PeCoffLoaderRelocateImageExtraAction (
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IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
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)
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{
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VOID * Handle;
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VOID * Entry;
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Handle = NULL;
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Entry = NULL;
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if (mUnix == NULL) {
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UnixPeCoffGetUnixThunkStucture ();
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}
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DEBUG ((EFI_D_ERROR, "Loading %s 0x%08lx - entry point 0x%08lx\n",
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ImageContext->PdbPointer,
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(UINTN)ImageContext->ImageAddress,
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(UINTN)ImageContext->EntryPoint));
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Handle = mUnix->Dlopen (ImageContext->PdbPointer, RTLD_NOW);
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if (Handle) {
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Entry = mUnix->Dlsym(Handle, "_ModuleEntryPoint");
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} else {
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DEBUG ((EFI_D_ERROR, "%s\n", mUnix->Dlerror()));
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}
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if (Entry != NULL) {
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ImageContext->EntryPoint = Entry;
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DEBUG ((EFI_D_ERROR, "Change %s Entrypoint to :0x%08lx\n", ImageContext->PdbPointer, Entry));
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}
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return;
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}
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/**
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Unloads a loaded PE/COFF image from memory and releases its taken resource.
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Releases any environment specific resources that were allocated when the image
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specified by ImageContext was loaded using PeCoffLoaderLoadImage().
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If ImageContext is NULL, then ASSERT().
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@param ImageContext Pointer to the image context structure that describes the PE/COFF
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image to be unloaded.
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**/
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VOID
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EFIAPI
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PeCoffLoaderUnloadImageExtraAction (
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IN OUT PE_COFF_LOADER_IMAGE_CONTEXT *ImageContext
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)
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{
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}
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