1 /* System call table for UML/x86-64, copied from arch/x86_64/kernel/syscall.c
2 * with some changes for UML. */
4 #include <linux/linkage.h>
6 #include <linux/cache.h>
10 /* Below you can see, in terms of #define's, the differences between the x86-64
11 * and the UML syscall table. */
13 /* Not going to be implemented by UML, since we have no hardware. */
14 #define stub_iopl sys_ni_syscall
15 #define sys_ioperm sys_ni_syscall
17 /* The UML TLS problem. Note that x86_64 does not implement this, so the below
18 * is needed only for the ia32 compatibility. */
19 /*#define sys_set_thread_area sys_ni_syscall
20 #define sys_get_thread_area sys_ni_syscall*/
22 /* On UML we call it this way ("old" means it's not mmap2) */
23 #define sys_mmap old_mmap
24 /* On x86-64 sys_uname is actually sys_newuname plus a compatibility trick.
25 * See arch/x86_64/kernel/sys_x86_64.c */
26 #define sys_uname sys_uname64
28 #define stub_clone sys_clone
29 #define stub_fork sys_fork
30 #define stub_vfork sys_vfork
31 #define stub_execve sys_execve
32 #define stub_rt_sigsuspend sys_rt_sigsuspend
33 #define stub_sigaltstack sys_sigaltstack
34 #define stub_rt_sigreturn sys_rt_sigreturn
36 #define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ;
37 #undef _ASM_X86_64_UNISTD_H_
38 #include <asm-x86_64/unistd.h>
41 #define __SYSCALL(nr, sym) [ nr ] = sym,
42 #undef _ASM_X86_64_UNISTD_H_
44 typedef void (*sys_call_ptr_t)(void);
46 extern void sys_ni_syscall(void);
48 sys_call_ptr_t sys_call_table[__NR_syscall_max+1] __cacheline_aligned = {
49 /* Smells like a like a compiler bug -- it doesn't work when the & below is removed. */
50 [0 ... __NR_syscall_max] = &sys_ni_syscall,
51 #include <asm-x86_64/unistd.h>