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https://github.com/acidanthera/audk.git
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e6b6aa90d4
Adds dynamic stack cookies in the form of copies of the entry point libraries that use shared logic to update stack cookies at runtime. This relies on RDRAND on IA32/X64 and RNDR on AARCH64 to get a random number to apply to the stack cookie on module entry point. This simplifies the logic a platform must do to include stack check functionality. Signed-off-by: Oliver Smith-Denny <osde@microsoft.com>
113 lines
3.2 KiB
C
113 lines
3.2 KiB
C
/** @file
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Entry point library instance to a UEFI application.
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Copyright (c) 2007 - 2018, Intel Corporation. All rights reserved.<BR>
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SPDX-License-Identifier: BSD-2-Clause-Patent
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**/
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#include <Uefi.h>
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#include <Library/UefiApplicationEntryPoint.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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/**
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Entry point to UEFI Application.
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This function is the entry point for a UEFI Application. This function must call
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ProcessLibraryConstructorList(), ProcessModuleEntryPointList(), and ProcessLibraryDestructorList().
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The return value from ProcessModuleEntryPointList() is returned.
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If _gUefiDriverRevision is not zero and SystemTable->Hdr.Revision is less than _gUefiDriverRevison,
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then return EFI_INCOMPATIBLE_VERSION.
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@param ImageHandle The image handle of the UEFI Application.
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@param SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The UEFI Application exited normally.
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@retval EFI_INCOMPATIBLE_VERSION _gUefiDriverRevision is greater than SystemTable->Hdr.Revision.
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@retval Other Return value from ProcessModuleEntryPointList().
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**/
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EFI_STATUS
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EFIAPI
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_CModuleEntryPoint (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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EFI_STATUS Status;
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if (_gUefiDriverRevision != 0) {
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//
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// Make sure that the EFI/UEFI spec revision of the platform is >= EFI/UEFI spec revision of the application.
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//
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if (SystemTable->Hdr.Revision < _gUefiDriverRevision) {
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return EFI_INCOMPATIBLE_VERSION;
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}
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}
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//
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// Call constructor for all libraries.
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//
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ProcessLibraryConstructorList (ImageHandle, SystemTable);
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//
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// Call the module's entry point
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//
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Status = ProcessModuleEntryPointList (ImageHandle, SystemTable);
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//
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// Process destructor for all libraries.
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//
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ProcessLibraryDestructorList (ImageHandle, SystemTable);
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//
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// Return the return status code from the driver entry point
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//
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return Status;
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}
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/**
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Invokes the library destructors for all dependent libraries and terminates
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the UEFI Application.
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This function calls ProcessLibraryDestructorList() and the EFI Boot Service Exit()
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with a status specified by Status.
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@param Status Status returned by the application that is exiting.
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**/
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VOID
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EFIAPI
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Exit (
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IN EFI_STATUS Status
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)
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{
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ProcessLibraryDestructorList (gImageHandle, gST);
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gBS->Exit (gImageHandle, Status, 0, NULL);
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}
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/**
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Required by the EBC compiler and identical in functionality to _ModuleEntryPoint().
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@param ImageHandle The image handle of the UEFI Application.
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@param SystemTable A pointer to the EFI System Table.
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@retval EFI_SUCCESS The UEFI Application exited normally.
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@retval EFI_INCOMPATIBLE_VERSION _gUefiDriverRevision is greater than SystemTable->Hdr.Revision.
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@retval Other Return value from ProcessModuleEntryPointList().
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**/
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EFI_STATUS
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EFIAPI
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EfiMain (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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return _ModuleEntryPoint (ImageHandle, SystemTable);
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}
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