Commit | Line | Data |
---|---|---|
95906b24 | 1 | /* |
45db1c61 | 2 | * System call table for UML/x86-64, copied from arch/x86/kernel/syscall_*.c |
95906b24 JD |
3 | * with some changes for UML. |
4 | */ | |
80f95078 PBG |
5 | |
6 | #include <linux/linkage.h> | |
7 | #include <linux/sys.h> | |
8 | #include <linux/cache.h> | |
45db1c61 | 9 | #include <generated/user_constants.h> |
80f95078 PBG |
10 | |
11 | #define __NO_STUBS | |
12 | ||
95906b24 JD |
13 | /* |
14 | * Below you can see, in terms of #define's, the differences between the x86-64 | |
15 | * and the UML syscall table. | |
16 | */ | |
80f95078 PBG |
17 | |
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 | ||
95906b24 JD |
22 | /* |
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 | */ | |
80f95078 | 26 | |
80f95078 PBG |
27 | /* On UML we call it this way ("old" means it's not mmap2) */ |
28 | #define sys_mmap old_mmap | |
80f95078 PBG |
29 | |
30 | #define stub_clone sys_clone | |
31 | #define stub_fork sys_fork | |
32 | #define stub_vfork sys_vfork | |
33 | #define stub_execve sys_execve | |
80f95078 PBG |
34 | #define stub_rt_sigreturn sys_rt_sigreturn |
35 | ||
6630f11b PA |
36 | #define __SYSCALL_COMMON(nr, sym, compat) __SYSCALL_64(nr, sym, compat) |
37 | #define __SYSCALL_X32(nr, sym, compat) /* Not supported */ | |
38 | ||
45db1c61 PA |
39 | #define __SYSCALL_64(nr, sym, compat) extern asmlinkage void sym(void) ; |
40 | #include <asm/syscalls_64.h> | |
80f95078 | 41 | |
45db1c61 PA |
42 | #undef __SYSCALL_64 |
43 | #define __SYSCALL_64(nr, sym, compat) [ nr ] = sym, | |
80f95078 PBG |
44 | |
45 | typedef void (*sys_call_ptr_t)(void); | |
46 | ||
47 | extern void sys_ni_syscall(void); | |
48 | ||
a074335a | 49 | const sys_call_ptr_t sys_call_table[] __cacheline_aligned = { |
45db1c61 PA |
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> | |
80f95078 | 56 | }; |
f87ea91d JD |
57 | |
58 | int syscall_table_size = sizeof(sys_call_table); |