| 1 | /* SPDX-License-Identifier: GPL-2.0-only */ |
|---|---|
| 2 | /* |
| 3 | * vsyscall_emu_64.S: Vsyscall emulation page |
| 4 | * |
| 5 | * Copyright (c) 2011 Andy Lutomirski |
| 6 | */ |
| 7 | |
| 8 | #include <linux/linkage.h> |
| 9 | |
| 10 | #include <asm/irq_vectors.h> |
| 11 | #include <asm/page_types.h> |
| 12 | #include <asm/unistd_64.h> |
| 13 | |
| 14 | __PAGE_ALIGNED_DATA |
| 15 | .globl __vsyscall_page |
| 16 | .balign PAGE_SIZE, 0xcc |
| 17 | .type __vsyscall_page, @object |
| 18 | __vsyscall_page: |
| 19 | |
| 20 | mov $__NR_gettimeofday, %rax |
| 21 | syscall |
| 22 | ret |
| 23 | int3 |
| 24 | |
| 25 | .balign 1024, 0xcc |
| 26 | mov $__NR_time, %rax |
| 27 | syscall |
| 28 | ret |
| 29 | int3 |
| 30 | |
| 31 | .balign 1024, 0xcc |
| 32 | mov $__NR_getcpu, %rax |
| 33 | syscall |
| 34 | ret |
| 35 | int3 |
| 36 | |
| 37 | .balign 4096, 0xcc |
| 38 | |
| 39 | .size __vsyscall_page, 4096 |
| 40 |