edk2/MdePkg/Library/StackCheckLibNull/StackCheckLibNullMsvc.c

/** @file
  Defines the stack cookie variable for GCC, Clang and MSVC compilers.

  Copyright (c) Microsoft Corporation.
  SPDX-License-Identifier: BSD-2-Clause-Patent
**/

#include <Uefi.h>
#include <Library/StackCheckLib.h>

VOID  *__security_cookie = (VOID *)(UINTN)0x0;
MdePkg: Create Stack Check Null Libs Add Null libs for Stack Check and Stack Check Failure Hook Lib that allow a platform to opt out of stack checks and the stack check failure hook lib. StackCheckLib allows implementation (or in this case null implementation) of stack checks on binaries. There is a Host Application specific version of this null lib because MSVC host applications must not be linked against our lib (so the file here is a no-op but that doesn't cause the build system to fail the build for not building a file for MSVC) as it links against the MSVC C runtime lib that provides the stack cookie definitions. GCC host applications do not link against such a C runtime lib and must be linked against our version. StackCheckFailureHookLib lets a platform do custom functionality when a stack check failure occurs (such as log it to a platform defined mechanism). The null lib simply returns. Signed-off-by: Oliver Smith-Denny <osde@linux.microsoft.com> 2024-08-27 14:31:48 -07:00			`/** @file`
			`Defines the stack cookie variable for GCC, Clang and MSVC compilers.`

			`Copyright (c) Microsoft Corporation.`
			`SPDX-License-Identifier: BSD-2-Clause-Patent`
			`**/`

			`#include <Uefi.h>`
MdePkg: Add StackCheckLib Library Class StackCheckLib defines the interface between a compiler and the stack checking code. It is being converted from a NULL library class to an actual library class to make it easier to use for a platform and be easier to define the expected interface with a compiler, so if there is a compiler change it can be tracked and caught. Signed-off-by: Oliver Smith-Denny <osde@microsoft.com> 2025-01-29 10:48:49 -08:00			`#include <Library/StackCheckLib.h>`
MdePkg: Create Stack Check Null Libs Add Null libs for Stack Check and Stack Check Failure Hook Lib that allow a platform to opt out of stack checks and the stack check failure hook lib. StackCheckLib allows implementation (or in this case null implementation) of stack checks on binaries. There is a Host Application specific version of this null lib because MSVC host applications must not be linked against our lib (so the file here is a no-op but that doesn't cause the build system to fail the build for not building a file for MSVC) as it links against the MSVC C runtime lib that provides the stack cookie definitions. GCC host applications do not link against such a C runtime lib and must be linked against our version. StackCheckFailureHookLib lets a platform do custom functionality when a stack check failure occurs (such as log it to a platform defined mechanism). The null lib simply returns. Signed-off-by: Oliver Smith-Denny <osde@linux.microsoft.com> 2024-08-27 14:31:48 -07:00
			`VOID __security_cookie = (VOID )(UINTN)0x0;`