1/*
2 * System call table for UML/x86-64, copied from arch/x86/kernel/syscall_*.c
3 * with some changes for UML.
4 */
5
6#include <linux/linkage.h>
7#include <linux/sys.h>
8#include <linux/cache.h>
9#include <generated/user_constants.h>
10#include <asm/syscall.h>
11
12#define __NO_STUBS
13
14/*
15 * Below you can see, in terms of #define's, the differences between the x86-64
16 * and the UML syscall table.
17 */
18
19/* Not going to be implemented by UML, since we have no hardware. */
20#define sys_iopl sys_ni_syscall
21#define sys_ioperm sys_ni_syscall
22
23/*
24 * The UML TLS problem. Note that x86_64 does not implement this, so the below
25 * is needed only for the ia32 compatibility.
26 */
27
28/* On UML we call it this way ("old" means it's not mmap2) */
29#define sys_mmap old_mmap
30
31#define stub_clone sys_clone
32#define stub_fork sys_fork
33#define stub_vfork sys_vfork
34#define stub_execve sys_execve
35#define stub_execveat sys_execveat
36#define stub_rt_sigreturn sys_rt_sigreturn
37
38#define __SYSCALL_COMMON(nr, sym, compat) __SYSCALL_64(nr, sym, compat)
39#define __SYSCALL_X32(nr, sym, compat) /* Not supported */
40
41#define __SYSCALL_64(nr, sym, compat) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) ;
42#include <asm/syscalls_64.h>
43
44#undef __SYSCALL_64
45#define __SYSCALL_64(nr, sym, compat) [ nr ] = sym,
46
47extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
48
49const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = {
50	/*
51	 * Smells like a compiler bug -- it doesn't work
52	 * when the & below is removed.
53	 */
54	[0 ... __NR_syscall_max] = &sys_ni_syscall,
55#include <asm/syscalls_64.h>
56};
57
58int syscall_table_size = sizeof(sys_call_table);
59