projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| 9095d37b | 1 | #------------------------------------------------------------------------------\r |
| ebd04fc2 | 2 | #\r |
| 9095d37b | 3 | # Copyright (c) 2006 - 2018, Intel Corporation. All rights reserved.<BR>\r |
| bb817c56 HT |
4 | # Portions copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>\r |
| 5 | # This program and the accompanying materials\r | |
| ebd04fc2 | 6 | # are licensed and made available under the terms and conditions of the BSD License\r |
| 7 | # which accompanies this distribution. The full text of the license may be found at\r | |
| 35a17154 | 8 | # http://opensource.org/licenses/bsd-license.php.\r |
| ebd04fc2 | 9 | #\r |
| 10 | # THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 11 | # WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 12 | #\r | |
| 13 | #------------------------------------------------------------------------------\r | |
| 14 | .text\r | |
| 15 | .p2align 2\r | |
| 16 | \r | |
| 4c8a6e06 | 17 | GCC_ASM_EXPORT(SetJump)\r |
| 18 | GCC_ASM_EXPORT(InternalLongJump)\r | |
| ebd04fc2 | 19 | \r |
| 20 | #/**\r | |
| 21 | # Saves the current CPU context that can be restored with a call to LongJump() and returns 0.#\r | |
| 22 | #\r | |
| 23 | # Saves the current CPU context in the buffer specified by JumpBuffer and returns 0. The initial\r | |
| 24 | # call to SetJump() must always return 0. Subsequent calls to LongJump() cause a non-zero\r | |
| 25 | # value to be returned by SetJump().\r | |
| 26 | #\r | |
| 27 | # If JumpBuffer is NULL, then ASSERT().\r | |
| 28 | # For IPF CPUs, if JumpBuffer is not aligned on a 16-byte boundary, then ASSERT().\r | |
| 29 | #\r | |
| 30 | # @param JumpBuffer A pointer to CPU context buffer.\r | |
| 31 | #\r | |
| 32 | #**/\r | |
| 33 | #\r | |
| 34 | #UINTN\r | |
| 35 | #EFIAPI\r | |
| 36 | #SetJump (\r | |
| 37 | # IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer // R0\r | |
| 38 | # );\r | |
| 39 | #\r | |
| 40 | ASM_PFX(SetJump):\r | |
| 41 | mov r3, r13\r | |
| 42 | stmia r0, {r3-r12,r14}\r | |
| 43 | eor r0, r0, r0\r | |
| 44 | bx lr\r | |
| 45 | \r | |
| 46 | #/**\r | |
| 47 | # Restores the CPU context that was saved with SetJump().#\r | |
| 48 | #\r | |
| 49 | # Restores the CPU context from the buffer specified by JumpBuffer.\r | |
| 50 | # This function never returns to the caller.\r | |
| 51 | # Instead is resumes execution based on the state of JumpBuffer.\r | |
| 52 | #\r | |
| 53 | # @param JumpBuffer A pointer to CPU context buffer.\r | |
| 54 | # @param Value The value to return when the SetJump() context is restored.\r | |
| 55 | #\r | |
| 56 | #**/\r | |
| 57 | #VOID\r | |
| 58 | #EFIAPI\r | |
| 59 | #InternalLongJump (\r | |
| 60 | # IN BASE_LIBRARY_JUMP_BUFFER *JumpBuffer, // R0\r | |
| 61 | # IN UINTN Value // R1\r | |
| 62 | # );\r | |
| 63 | #\r | |
| 64 | ASM_PFX(InternalLongJump):\r | |
| 65 | ldmia r0, {r3-r12,r14}\r | |
| 66 | mov r13, r3\r | |
| 67 | mov r0, r1\r | |
| 68 | bx lr\r | |
| 69 | \r | |
| 7f22d351 | 70 | ASM_FUNCTION_REMOVE_IF_UNREFERENCED\r |