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/** @file
Provides the required functionality for handling stack
cookie check failures in GCC.
Copyright (c) Microsoft Corporation.
SPDX-License-Identifier: BSD-2-Clause-Patent
**/
#include <Base.h>
#include <Library/DebugLib.h>
#include <Library/BaseLib.h>
#include <Library/StackCheckLib.h>
#include <Library/StackCheckFailureHookLib.h>
/**
Triggers an interrupt using the vector specified by PcdStackCookieExceptionVector
**/
VOID
TriggerStackCookieInterrupt (
VOID
);
VOID *__stack_chk_guard = (VOID *)(UINTN)STACK_COOKIE_VALUE;
/**
This function gets called when a gcc/clang generated stack cookie fails. This implementation calls into a platform
failure hook lib and then triggers the stack cookie interrupt.
**/
VOID
EFIAPI
__stack_chk_fail (
VOID
)
{
DEBUG ((DEBUG_ERROR, "Stack cookie check failed at address 0x%llx!\n", RETURN_ADDRESS (0)));
StackCheckFailureHook (RETURN_ADDRESS (0));
TriggerStackCookieInterrupt ();
}
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