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MdePkg: Introduced BaseStackCheckLib (cont.)

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This library only support GCC, RVCT and XCode for now.
The new files were missing from SVN rev15851.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Andrew Fish <afish@apple.com>
Signed-off-by: Olivier Martin <olivier.martin@arm.com
Reviewed-by: Gao, Liming <liming.gao@intel.com>



git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@15852 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Andrew Fish
2014-08-20 18:00:38 +00:00
committed by oliviermartin
parent 4bc7d5b5ec
commit 5e5fb41538
2 changed files with 97 additions and 0 deletions
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55
MdePkg/Library/BaseStackCheckLib/BaseStackCheckGcc.c Normal file
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/** @file
Base Stack Check library for GCC/clang.
Use -fstack-protector-all compiler flag to make the compiler insert the
__stack_chk_guard "canary" value into the stack and check the value prior
to exiting the function. If the "canary" is overwritten __stack_chk_fail()
is called. This is GCC specific code.
Copyright (c) 2012, Apple Inc. All rights reserved.<BR>
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.
**/
#include <Base.h>
#include <Library/BaseLib.h>
#include <Library/DebugLib.h>
#include <Library/PcdLib.h>
/// "canary" value that is inserted by the compiler into the stack frame.
VOID *__stack_chk_guard = (VOID*)FixedPcdGet64 (PcdBaseStackCanary);
// If ASLR was enabled we could use
//void (*__stack_chk_guard)(void) = __stack_chk_fail;
/**
Error path for compiler generated stack "canary" value check code. If the
stack canary has been overwritten this function gets called on exit of the
function.
**/
VOID
__stack_chk_fail (
VOID
)
{
UINT8 DebugPropertyMask;
DEBUG ((DEBUG_ERROR, "STACK FAULT: Buffer Overflow in function %a.\n", __builtin_return_address(0)));
//
// Generate a Breakpoint, DeadLoop, or NOP based on PCD settings even if
// BaseDebugLibNull is in use.
//
DebugPropertyMask = PcdGet8 (PcdDebugPropertyMask);
if ((DebugPropertyMask & DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED) != 0) {
CpuBreakpoint ();
} else if ((DebugPropertyMask & DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED) != 0) {
CpuDeadLoop ();
}
}

42
MdePkg/Library/BaseStackCheckLib/BaseStackCheckLib.inf Normal file
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## @file
# Stack Check Library
#
# Copyright (c) 2014, ARM Ltd. All rights reserved.<BR>
#
# 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.
#
#
##
[Defines]
INF_VERSION = 0x00010005
BASE_NAME = BaseStackCheckLib
FILE_GUID = 5f6579f7-b648-4fdb-9f19-4c17e27e8eff
MODULE_TYPE = BASE
VERSION_STRING = 1.0
LIBRARY_CLASS = NULL
#
# VALID_ARCHITECTURES = ARM AARCH64
#
[Sources]
BaseStackCheckGcc.c | GCC
BaseStackCheckGcc.c | RVCT
[Packages]
MdePkg/MdePkg.dec
[LibraryClasses]
BaseLib
DebugLib
[FixedPcd]
gEfiMdePkgTokenSpaceGuid.PcdBaseStackCanary
gEfiMdePkgTokenSpaceGuid.PcdDebugPropertyMask