X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=OldMdePkg%2FLibrary%2FBaseLib%2FEbc%2FSetJumpLongJump.c;fp=OldMdePkg%2FLibrary%2FBaseLib%2FEbc%2FSetJumpLongJump.c;h=b485d3e495d6d11c2b4a3fed95fed277786d969d;hp=0000000000000000000000000000000000000000;hb=586cd1f1f4129ab7ec24543d4968801e17cc870b;hpb=144d783d40c8a02113350feabd1b9a55b692313f diff --git a/OldMdePkg/Library/BaseLib/Ebc/SetJumpLongJump.c b/OldMdePkg/Library/BaseLib/Ebc/SetJumpLongJump.c new file mode 100644 index 0000000000..b485d3e495 --- /dev/null +++ b/OldMdePkg/Library/BaseLib/Ebc/SetJumpLongJump.c @@ -0,0 +1,78 @@ +/** @file + Switch Stack functions. + + Copyright (c) 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: SetJumpLongJump.c + +**/ + +/** + 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 + ); + +/** + Saves the current CPU context that can be restored with a call to LongJump() and returns 0. + + Saves the current CPU context in the buffer specified by JumpBuffer and returns 0. The initial + call to SetJump() must always return 0. Subsequent calls to LongJump() cause a non-zero + value to be returned by SetJump(). + + 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. + +**/ +UINTN +EFIAPI +SetJump ( + IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer + ) +{ + InternalAssertJumpBuffer (JumpBuffer); + return 0; +} + +/** + 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 + ) +{ + // + // This function cannot work on EBC + // + ASSERT (FALSE); +}