diff options
| author | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
|---|---|---|
| committer | Yuval Adam <_@yuv.al> | 2017-08-30 08:25:59 +0000 |
| commit | 8e4bff4cab0ddac6060645b0715210484d02ff40 (patch) | |
| tree | 3a5c3024371a04692a3a6d9974d001cdff8ebf84 /arch/x86/kernel/vsyscall_emu_64.S | |
Diffstat (limited to 'arch/x86/kernel/vsyscall_emu_64.S')
| -rw-r--r-- | arch/x86/kernel/vsyscall_emu_64.S | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/arch/x86/kernel/vsyscall_emu_64.S b/arch/x86/kernel/vsyscall_emu_64.S new file mode 100644 index 00000000..c9596a9a --- /dev/null +++ b/arch/x86/kernel/vsyscall_emu_64.S @@ -0,0 +1,37 @@ +/* + * vsyscall_emu_64.S: Vsyscall emulation page + * + * Copyright (c) 2011 Andy Lutomirski + * + * Subject to the GNU General Public License, version 2 + */ + +#include <linux/linkage.h> + +#include <asm/irq_vectors.h> +#include <asm/page_types.h> +#include <asm/unistd_64.h> + +__PAGE_ALIGNED_DATA + .globl __vsyscall_page + .balign PAGE_SIZE, 0xcc + .type __vsyscall_page, @object +__vsyscall_page: + + mov $__NR_gettimeofday, %rax + syscall + ret + + .balign 1024, 0xcc + mov $__NR_time, %rax + syscall + ret + + .balign 1024, 0xcc + mov $__NR_getcpu, %rax + syscall + ret + + .balign 4096, 0xcc + + .size __vsyscall_page, 4096 |