diff options
Diffstat (limited to 'MdePkg/Library/BaseStackCheckLib/BaseStackCheckGcc.c')
-rw-r--r-- | MdePkg/Library/BaseStackCheckLib/BaseStackCheckGcc.c | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/MdePkg/Library/BaseStackCheckLib/BaseStackCheckGcc.c b/MdePkg/Library/BaseStackCheckLib/BaseStackCheckGcc.c deleted file mode 100644 index 4cd0d4ce30..0000000000 --- a/MdePkg/Library/BaseStackCheckLib/BaseStackCheckGcc.c +++ /dev/null @@ -1,55 +0,0 @@ -/** @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*)0x0AFF;
-
-// 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 ();
- }
-}
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