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