diff options
Diffstat (limited to 'arch/x86/kernel/vsyscall_emu_64.S')
-rw-r--r-- | arch/x86/kernel/vsyscall_emu_64.S | 36 |
1 files changed, 23 insertions, 13 deletions
diff --git a/arch/x86/kernel/vsyscall_emu_64.S b/arch/x86/kernel/vsyscall_emu_64.S index ffa845eae5ca..c9596a9af159 100644 --- a/arch/x86/kernel/vsyscall_emu_64.S +++ b/arch/x86/kernel/vsyscall_emu_64.S | |||
@@ -7,21 +7,31 @@ | |||
7 | */ | 7 | */ |
8 | 8 | ||
9 | #include <linux/linkage.h> | 9 | #include <linux/linkage.h> |
10 | |||
10 | #include <asm/irq_vectors.h> | 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 | ||
11 | 24 | ||
12 | /* The unused parts of the page are filled with 0xcc by the linker script. */ | 25 | .balign 1024, 0xcc |
26 | mov $__NR_time, %rax | ||
27 | syscall | ||
28 | ret | ||
13 | 29 | ||
14 | .section .vsyscall_0, "a" | 30 | .balign 1024, 0xcc |
15 | ENTRY(vsyscall_0) | 31 | mov $__NR_getcpu, %rax |
16 | int $VSYSCALL_EMU_VECTOR | 32 | syscall |
17 | END(vsyscall_0) | 33 | ret |
18 | 34 | ||
19 | .section .vsyscall_1, "a" | 35 | .balign 4096, 0xcc |
20 | ENTRY(vsyscall_1) | ||
21 | int $VSYSCALL_EMU_VECTOR | ||
22 | END(vsyscall_1) | ||
23 | 36 | ||
24 | .section .vsyscall_2, "a" | 37 | .size __vsyscall_page, 4096 |
25 | ENTRY(vsyscall_2) | ||
26 | int $VSYSCALL_EMU_VECTOR | ||
27 | END(vsyscall_2) | ||