tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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
11#define __NO_STUBS
12
13/*
14 * Below you can see, in terms of #define's, the differences between the x86-64
15 * and the UML syscall table.
16 */
17
18/* Not going to be implemented by UML, since we have no hardware. */
19#define sys_iopl sys_ni_syscall
20#define sys_ioperm sys_ni_syscall
21
22#define sys_vm86old sys_ni_syscall
23#define sys_vm86 sys_ni_syscall
24
25#define old_mmap sys_old_mmap
26
27#define ptregs_iopl sys_iopl
28#define ptregs_vm86old sys_vm86old
29#define ptregs_vm86 sys_vm86
30
31#define __SYSCALL_I386(nr, sym, compat) extern asmlinkage void sym(void) ;
32#include <asm/syscalls_32.h>
33
34#undef __SYSCALL_I386
35#define __SYSCALL_I386(nr, sym, compat) [ nr ] = sym,
36
37typedef asmlinkage void (*sys_call_ptr_t)(void);
38
39extern asmlinkage void sys_ni_syscall(void);
40
41const sys_call_ptr_t sys_call_table[] __cacheline_aligned = {
42 /*
43 * Smells like a compiler bug -- it doesn't work
44 * when the & below is removed.
45 */
46 [0 ... __NR_syscall_max] = &sys_ni_syscall,
47#include <asm/syscalls_32.h>
48};
49
50int syscall_table_size = sizeof(sys_call_table);