xref: /openbmc/linux/arch/x86/um/sys_call_table_32.c (revision 981ab3f1)
1 /*
2  * System call table for UML/i386, 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 #define sys_vm86old sys_ni_syscall
24 #define sys_vm86 sys_ni_syscall
25 
26 #define old_mmap sys_old_mmap
27 
28 #define __SYSCALL_I386(nr, sym, qual) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) ;
29 #include <asm/syscalls_32.h>
30 
31 #undef __SYSCALL_I386
32 #define __SYSCALL_I386(nr, sym, qual) [ nr ] = sym,
33 
34 extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
35 
36 const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = {
37 	/*
38 	 * Smells like a compiler bug -- it doesn't work
39 	 * when the & below is removed.
40 	 */
41 	[0 ... __NR_syscall_max] = &sys_ni_syscall,
42 #include <asm/syscalls_32.h>
43 };
44 
45 int syscall_table_size = sizeof(sys_call_table);
46