projects / mirror_edk2.git / blame
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|---|---|---|
| 72ed2ede JJ |
1 | ;------------------------------------------------------------------------------\r |
| 2 | ;\r | |
| 3 | ; Copyright (c) 2006, Intel Corporation. All rights reserved.<BR>\r | |
| 4 | ; This program and the accompanying materials\r | |
| 5 | ; are licensed and made available under the terms and conditions of the BSD License\r | |
| 6 | ; which accompanies this distribution. The full text of the license may be found at\r | |
| 7 | ; http://opensource.org/licenses/bsd-license.php.\r | |
| 8 | ;\r | |
| 9 | ; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
| 10 | ; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
| 11 | ;\r | |
| 12 | ; Module Name:\r | |
| 13 | ;\r | |
| 14 | ; SetJump.Asm\r | |
| 15 | ;\r | |
| 16 | ; Abstract:\r | |
| 17 | ;\r | |
| 18 | ; Implementation of SetJump() on IA-32.\r | |
| 19 | ;\r | |
| 20 | ;------------------------------------------------------------------------------\r | |
| 21 | \r | |
| 22 | SECTION .text\r | |
| 23 | \r | |
| 24 | extern ASM_PFX(InternalAssertJumpBuffer)\r | |
| 25 | \r | |
| 26 | ;------------------------------------------------------------------------------\r | |
| 27 | ; UINTN\r | |
| 28 | ; EFIAPI\r | |
| 29 | ; SetJump (\r | |
| 30 | ; OUT BASE_LIBRARY_JUMP_BUFFER *JumpBuffer\r | |
| 31 | ; );\r | |
| 32 | ;------------------------------------------------------------------------------\r | |
| 33 | global ASM_PFX(SetJump)\r | |
| 34 | ASM_PFX(SetJump):\r | |
| 35 | push DWORD [esp + 4]\r | |
| 36 | call ASM_PFX(InternalAssertJumpBuffer) ; To validate JumpBuffer\r | |
| 37 | pop ecx\r | |
| 38 | pop ecx ; ecx <- return address\r | |
| 39 | mov edx, [esp]\r | |
| 40 | mov [edx], ebx\r | |
| 41 | mov [edx + 4], esi\r | |
| 42 | mov [edx + 8], edi\r | |
| 43 | mov [edx + 12], ebp\r | |
| 44 | mov [edx + 16], esp\r | |
| 45 | mov [edx + 20], ecx ; eip value to restore in LongJump\r | |
| 46 | xor eax, eax\r | |
| 47 | jmp ecx\r | |
| 48 | \r |