projects / mirror_edk2.git / blame
| Commit | Line | Data |
|---|---|---|
| ff443d3e | 1 | #------------------------------------------------------------------------------\r |
| 2 | #\r | |
| 584d5652 HT |
3 | # Copyright (c) 2006 - 2010, Intel Corporation. All rights reserved.<BR>\r |
| 4 | # This program and the accompanying materials\r | |
| ff443d3e | 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 | # PageFaultHandler.S\r | |
| 15 | #\r | |
| 16 | # Abstract:\r | |
| 17 | #\r | |
| 18 | # Defines page fault handler used to hook SMM IDT\r | |
| 19 | #\r | |
| 20 | #------------------------------------------------------------------------------\r | |
| 21 | \r | |
| 22 | ASM_GLOBAL ASM_PFX(PageFaultHandlerHook)\r | |
| 23 | ASM_PFX(PageFaultHandlerHook):\r | |
| 24 | pushq %rax # save all volatile registers\r | |
| 25 | pushq %rcx\r | |
| 26 | pushq %rdx\r | |
| 27 | pushq %r8\r | |
| 28 | pushq %r9\r | |
| 29 | pushq %r10\r | |
| 30 | pushq %r11\r | |
| 31 | addq $-0x20, %rsp\r | |
| 32 | call ASM_PFX(PageFaultHandler)\r | |
| 33 | addq $0x20, %rsp\r | |
| 34 | test %rax, %rax\r | |
| 35 | popq %r11\r | |
| 36 | popq %r10\r | |
| 37 | popq %r9\r | |
| 38 | popq %r8\r | |
| 39 | popq %rdx\r | |
| 40 | popq %rcx\r | |
| 41 | popq %rax # restore all volatile registers\r | |
| 42 | jnz L1\r | |
| 271d2c7f | 43 | #ifdef __APPLE__\r |
| 44 | int $3\r | |
| 45 | #else\r | |
| 6a60f8cb | 46 | jmpq *ASM_PFX(mOriginalHandler)\r |
| 271d2c7f | 47 | #endif\r |
| ff443d3e | 48 | L1:\r |
| 49 | addq $0x08, %rsp # skip error code for PF\r | |
| 50 | iretq\r |