| /* |
| * System call table for UML/x86-64, copied from arch/x86/kernel/syscall_*.c |
| * with some changes for UML. |
| */ |
| |
| #include <linux/linkage.h> |
| #include <linux/sys.h> |
| #include <linux/cache.h> |
| #include <generated/user_constants.h> |
| |
| #define __NO_STUBS |
| |
| /* |
| * Below you can see, in terms of #define's, the differences between the x86-64 |
| * and the UML syscall table. |
| */ |
| |
| /* Not going to be implemented by UML, since we have no hardware. */ |
| #define stub_iopl sys_ni_syscall |
| #define sys_ioperm sys_ni_syscall |
| |
| /* |
| * The UML TLS problem. Note that x86_64 does not implement this, so the below |
| * is needed only for the ia32 compatibility. |
| */ |
| |
| /* On UML we call it this way ("old" means it's not mmap2) */ |
| #define sys_mmap old_mmap |
| |
| #define stub_clone sys_clone |
| #define stub_fork sys_fork |
| #define stub_vfork sys_vfork |
| #define stub_execve sys_execve |
| #define stub_rt_sigreturn sys_rt_sigreturn |
| |
| #define __SYSCALL_COMMON(nr, sym, compat) __SYSCALL_64(nr, sym, compat) |
| #define __SYSCALL_X32(nr, sym, compat) /* Not supported */ |
| |
| #define __SYSCALL_64(nr, sym, compat) extern asmlinkage void sym(void) ; |
| #include <asm/syscalls_64.h> |
| |
| #undef __SYSCALL_64 |
| #define __SYSCALL_64(nr, sym, compat) [ nr ] = sym, |
| |
| typedef void (*sys_call_ptr_t)(void); |
| |
| extern void sys_ni_syscall(void); |
| |
| const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = { |
| /* |
| * Smells like a compiler bug -- it doesn't work |
| * when the & below is removed. |
| */ |
| [0 ... __NR_syscall_max] = &sys_ni_syscall, |
| #include <asm/syscalls_64.h> |
| }; |
| |
| int syscall_table_size = sizeof(sys_call_table); |