1 /* 2 * System call table for UML/x86-64, 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 /* 24 * The UML TLS problem. Note that x86_64 does not implement this, so the below 25 * is needed only for the ia32 compatibility. 26 */ 27 28 /* On UML we call it this way ("old" means it's not mmap2) */ 29 #define sys_mmap old_mmap 30 31 #define stub_clone sys_clone 32 #define stub_fork sys_fork 33 #define stub_vfork sys_vfork 34 #define stub_execve sys_execve 35 #define stub_execveat sys_execveat 36 #define stub_rt_sigreturn sys_rt_sigreturn 37 38 #define __SYSCALL_64(nr, sym, qual) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) ; 39 #include <asm/syscalls_64.h> 40 41 #undef __SYSCALL_64 42 #define __SYSCALL_64(nr, sym, qual) [ nr ] = sym, 43 44 extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); 45 46 const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = { 47 /* 48 * Smells like a compiler bug -- it doesn't work 49 * when the & below is removed. 50 */ 51 [0 ... __NR_syscall_max] = &sys_ni_syscall, 52 #include <asm/syscalls_64.h> 53 }; 54 55 int syscall_table_size = sizeof(sys_call_table); 56