MdePkg: Apply uncrustify changes

[mirror_edk2.git] / MdePkg / Library / BaseStackCheckLib / BaseStackCheckGcc.c

/** @file\r
 Base Stack Check library for GCC/clang.\r
\r
 Use -fstack-protector-all compiler flag to make the compiler insert the\r
 __stack_chk_guard "canary" value into the stack and check the value prior\r
 to exiting the function. If the "canary" is overwritten __stack_chk_fail()\r
 is called. This is GCC specific code.\r
\r
 Copyright (c) 2012, Apple Inc. All rights reserved.<BR>\r
 SPDX-License-Identifier: BSD-2-Clause-Patent\r
\r
**/\r
\r
#include <Base.h>\r
#include <Library/BaseLib.h>\r
#include <Library/DebugLib.h>\r
#include <Library/PcdLib.h>\r
\r
/// "canary" value that is inserted by the compiler into the stack frame.\r
VOID  *__stack_chk_guard = (VOID *)0x0AFF;\r
\r
// If ASLR was enabled we could use\r
// void (*__stack_chk_guard)(void) = __stack_chk_fail;\r
\r
/**\r
 Error path for compiler generated stack "canary" value check code. If the\r
 stack canary has been overwritten this function gets called on exit of the\r
 function.\r
**/\r
VOID\r
__stack_chk_fail (\r
  VOID\r
  )\r
{\r
  UINT8  DebugPropertyMask;\r
\r
  DEBUG ((DEBUG_ERROR, "STACK FAULT: Buffer Overflow in function %a.\n", __builtin_return_address (0)));\r
\r
  //\r
  // Generate a Breakpoint, DeadLoop, or NOP based on PCD settings even if\r
  // BaseDebugLibNull is in use.\r
  //\r
  DebugPropertyMask = PcdGet8 (PcdDebugPropertyMask);\r
  if ((DebugPropertyMask & DEBUG_PROPERTY_ASSERT_BREAKPOINT_ENABLED) != 0) {\r
    CpuBreakpoint ();\r
  } else if ((DebugPropertyMask & DEBUG_PROPERTY_ASSERT_DEADLOOP_ENABLED) != 0) {\r
    CpuDeadLoop ();\r
  }\r
}\r