1 // SPDX-License-Identifier: GPL-2.0
3 * System call table for UML/x86-64, copied from arch/x86/kernel/syscall_*.c
4 * with some changes for UML.
7 #include <linux/linkage.h>
9 #include <linux/cache.h>
10 #include <generated/user_constants.h>
11 #include <asm/syscall.h>
16 * Below you can see, in terms of #define's, the differences between the x86-64
17 * and the UML syscall table.
20 /* Not going to be implemented by UML, since we have no hardware. */
21 #define sys_iopl sys_ni_syscall
22 #define sys_ioperm sys_ni_syscall
25 * The UML TLS problem. Note that x86_64 does not implement this, so the below
26 * is needed only for the ia32 compatibility.
29 /* On UML we call it this way ("old" means it's not mmap2) */
30 #define sys_mmap old_mmap
32 #define stub_clone sys_clone
33 #define stub_fork sys_fork
34 #define stub_vfork sys_vfork
35 #define stub_execve sys_execve
36 #define stub_execveat sys_execveat
37 #define stub_rt_sigreturn sys_rt_sigreturn
39 #define __SYSCALL_64(nr, sym, qual) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) ;
40 #include <asm/syscalls_64.h>
43 #define __SYSCALL_64(nr, sym, qual) [ nr ] = sym,
45 extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
47 const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = {
49 * Smells like a compiler bug -- it doesn't work
50 * when the & below is removed.
52 [0 ... __NR_syscall_max] = &sys_ni_syscall,
53 #include <asm/syscalls_64.h>
56 int syscall_table_size = sizeof(sys_call_table);