H. Peter Anvin | 45db1c6 | 2011-12-05 16:08:49 -0800 | [diff] [blame] | 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. */ |
H. Peter Anvin | 47db9e7 | 2011-12-09 11:13:59 -0800 | [diff] [blame] | 19 | #define sys_iopl sys_ni_syscall |
H. Peter Anvin | 45db1c6 | 2011-12-05 16:08:49 -0800 | [diff] [blame] | 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_fork sys_fork |
H. Peter Anvin | 45db1c6 | 2011-12-05 16:08:49 -0800 | [diff] [blame] | 28 | #define ptregs_iopl sys_iopl |
| 29 | #define ptregs_vm86old sys_vm86old |
Al Viro | a4d94ff | 2012-09-20 09:28:25 -0400 | [diff] [blame] | 30 | #define ptregs_clone i386_clone |
H. Peter Anvin | 45db1c6 | 2011-12-05 16:08:49 -0800 | [diff] [blame] | 31 | #define ptregs_vm86 sys_vm86 |
| 32 | #define ptregs_sigaltstack sys_sigaltstack |
| 33 | #define ptregs_vfork sys_vfork |
| 34 | |
| 35 | #define __SYSCALL_I386(nr, sym, compat) extern asmlinkage void sym(void) ; |
| 36 | #include <asm/syscalls_32.h> |
| 37 | |
| 38 | #undef __SYSCALL_I386 |
| 39 | #define __SYSCALL_I386(nr, sym, compat) [ nr ] = sym, |
| 40 | |
Martin Pelikan | 9271b0b | 2012-06-09 21:22:11 +0200 | [diff] [blame] | 41 | typedef asmlinkage void (*sys_call_ptr_t)(void); |
H. Peter Anvin | 45db1c6 | 2011-12-05 16:08:49 -0800 | [diff] [blame] | 42 | |
Martin Pelikan | 9271b0b | 2012-06-09 21:22:11 +0200 | [diff] [blame] | 43 | extern asmlinkage void sys_ni_syscall(void); |
H. Peter Anvin | 45db1c6 | 2011-12-05 16:08:49 -0800 | [diff] [blame] | 44 | |
H. Peter Anvin | a074335 | 2011-12-05 22:48:49 -0800 | [diff] [blame] | 45 | const sys_call_ptr_t sys_call_table[] __cacheline_aligned = { |
H. Peter Anvin | 45db1c6 | 2011-12-05 16:08:49 -0800 | [diff] [blame] | 46 | /* |
| 47 | * Smells like a compiler bug -- it doesn't work |
| 48 | * when the & below is removed. |
| 49 | */ |
| 50 | [0 ... __NR_syscall_max] = &sys_ni_syscall, |
| 51 | #include <asm/syscalls_32.h> |
| 52 | }; |
| 53 | |
| 54 | int syscall_table_size = sizeof(sys_call_table); |