blob: 5cdfa9db22175ed8dc327465b4cf033a7a65d3bc [file] [log] [blame]
Jeff Dike95906b22008-02-04 22:31:20 -08001/*
H. Peter Anvin45db1c62011-12-05 16:08:49 -08002 * System call table for UML/x86-64, copied from arch/x86/kernel/syscall_*.c
Jeff Dike95906b22008-02-04 22:31:20 -08003 * with some changes for UML.
4 */
Paolo 'Blaisorblade' Giarrusso80f95072005-05-01 08:58:55 -07005
6#include <linux/linkage.h>
7#include <linux/sys.h>
8#include <linux/cache.h>
H. Peter Anvin45db1c62011-12-05 16:08:49 -08009#include <generated/user_constants.h>
Paolo 'Blaisorblade' Giarrusso80f95072005-05-01 08:58:55 -070010
11#define __NO_STUBS
12
Jeff Dike95906b22008-02-04 22:31:20 -080013/*
14 * Below you can see, in terms of #define's, the differences between the x86-64
15 * and the UML syscall table.
16 */
Paolo 'Blaisorblade' Giarrusso80f95072005-05-01 08:58:55 -070017
18/* Not going to be implemented by UML, since we have no hardware. */
19#define stub_iopl sys_ni_syscall
20#define sys_ioperm sys_ni_syscall
21
Jeff Dike95906b22008-02-04 22:31:20 -080022/*
23 * The UML TLS problem. Note that x86_64 does not implement this, so the below
24 * is needed only for the ia32 compatibility.
25 */
Paolo 'Blaisorblade' Giarrusso80f95072005-05-01 08:58:55 -070026
Paolo 'Blaisorblade' Giarrusso80f95072005-05-01 08:58:55 -070027/* On UML we call it this way ("old" means it's not mmap2) */
28#define sys_mmap old_mmap
Paolo 'Blaisorblade' Giarrusso80f95072005-05-01 08:58:55 -070029
30#define stub_clone sys_clone
31#define stub_fork sys_fork
32#define stub_vfork sys_vfork
33#define stub_execve sys_execve
David Drysdale27d6ec72014-12-12 16:57:33 -080034#define stub_execveat sys_execveat
Paolo 'Blaisorblade' Giarrusso80f95072005-05-01 08:58:55 -070035#define stub_rt_sigreturn sys_rt_sigreturn
36
H. Peter Anvin6630f112012-02-14 14:18:50 -080037#define __SYSCALL_COMMON(nr, sym, compat) __SYSCALL_64(nr, sym, compat)
38#define __SYSCALL_X32(nr, sym, compat) /* Not supported */
39
H. Peter Anvin45db1c62011-12-05 16:08:49 -080040#define __SYSCALL_64(nr, sym, compat) extern asmlinkage void sym(void) ;
41#include <asm/syscalls_64.h>
Paolo 'Blaisorblade' Giarrusso80f95072005-05-01 08:58:55 -070042
H. Peter Anvin45db1c62011-12-05 16:08:49 -080043#undef __SYSCALL_64
44#define __SYSCALL_64(nr, sym, compat) [ nr ] = sym,
Paolo 'Blaisorblade' Giarrusso80f95072005-05-01 08:58:55 -070045
46typedef void (*sys_call_ptr_t)(void);
47
48extern void sys_ni_syscall(void);
49
Daniel Borkmannb4853422015-01-03 13:11:10 +010050const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = {
H. Peter Anvin45db1c62011-12-05 16:08:49 -080051 /*
52 * Smells like a compiler bug -- it doesn't work
53 * when the & below is removed.
54 */
55 [0 ... __NR_syscall_max] = &sys_ni_syscall,
56#include <asm/syscalls_64.h>
Paolo 'Blaisorblade' Giarrusso80f95072005-05-01 08:58:55 -070057};
Jeff Dikef87ea912008-02-04 22:31:29 -080058
59int syscall_table_size = sizeof(sys_call_table);