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Diffstat (limited to 'EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/LongJump.c')
-rw-r--r-- | EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/LongJump.c | 85 |
1 files changed, 85 insertions, 0 deletions
diff --git a/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/LongJump.c b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/LongJump.c new file mode 100644 index 0000000..baa2d47 --- /dev/null +++ b/EDK/Foundation/Library/EdkIIGlueLib/Library/BaseLib/LongJump.c @@ -0,0 +1,85 @@ +/*++ + +Copyright (c) 2004 - 2006, Intel Corporation +All rights reserved. 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. + + +Module Name: + + LongJump.c + +Abstract: + + Long Jump functions + +--*/ + +#include "BaseLibInternal.h" + +/** + Worker function that checks ASSERT condition for JumpBuffer + + Checks ASSERT condition for JumpBuffer. + + If JumpBuffer is NULL, then ASSERT(). + For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT(). + + @param JumpBuffer A pointer to CPU context buffer. + +**/ +VOID +InternalAssertJumpBuffer ( + IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer + ); + +/** + Restores the CPU context that was saved with SetJump(). + + Restores the CPU context from the buffer specified by JumpBuffer. + This function never returns to the caller. + Instead is resumes execution based on the state of JumpBuffer. + + @param JumpBuffer A pointer to CPU context buffer. + @param Value The value to return when the SetJump() context is restored. + +**/ +VOID +EFIAPI +InternalLongJump ( + IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer, + IN UINTN Value + ); + +/** + Restores the CPU context that was saved with SetJump(). + + Restores the CPU context from the buffer specified by JumpBuffer. + This function never returns to the caller. + Instead is resumes execution based on the state of JumpBuffer. + + If JumpBuffer is NULL, then ASSERT(). + For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT(). + If Value is 0, then ASSERT(). + + @param JumpBuffer A pointer to CPU context buffer. + @param Value The value to return when the SetJump() context is restored. + +**/ +VOID +EFIAPI +LongJump ( + IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer, + IN UINTN Value + ) +{ + InternalAssertJumpBuffer (JumpBuffer); + ASSERT (Value != 0); + + InternalLongJump (JumpBuffer, Value); +} |