1/* System call table for UML/x86-64, copied from arch/x86_64/kernel/syscall.c 2 * with some changes for UML. */ 3 4#include <linux/linkage.h> 5#include <linux/sys.h> 6#include <linux/cache.h> 7#include <kern_constants.h> 8 9#define __NO_STUBS 10 11/* Below you can see, in terms of #define's, the differences between the x86-64 12 * and the UML syscall table. */ 13 14/* Not going to be implemented by UML, since we have no hardware. */ 15#define stub_iopl sys_ni_syscall 16#define sys_ioperm sys_ni_syscall 17 18/* The UML TLS problem. Note that x86_64 does not implement this, so the below 19 * is needed only for the ia32 compatibility. */ 20/*#define sys_set_thread_area sys_ni_syscall 21#define sys_get_thread_area sys_ni_syscall*/ 22 23/* On UML we call it this way ("old" means it's not mmap2) */ 24#define sys_mmap old_mmap 25/* On x86-64 sys_uname is actually sys_newuname plus a compatibility trick. 26 * See arch/x86_64/kernel/sys_x86_64.c */ 27#define sys_uname sys_uname64 28 29#define stub_clone sys_clone 30#define stub_fork sys_fork 31#define stub_vfork sys_vfork 32#define stub_execve sys_execve 33#define stub_rt_sigsuspend sys_rt_sigsuspend 34#define stub_sigaltstack sys_sigaltstack 35#define stub_rt_sigreturn sys_rt_sigreturn 36 37#define __SYSCALL(nr, sym) extern asmlinkage void sym(void) ; 38#undef _ASM_X86_64_UNISTD_H_ 39#include <asm-x86_64/unistd.h> 40 41#undef __SYSCALL 42#define __SYSCALL(nr, sym) [ nr ] = sym, 43#undef _ASM_X86_64_UNISTD_H_ 44 45typedef void (*sys_call_ptr_t)(void); 46 47extern void sys_ni_syscall(void); 48 49sys_call_ptr_t sys_call_table[UM_NR_syscall_max+1] __cacheline_aligned = { 50 /* Smells like a like a compiler bug -- it doesn't work when the & below is removed. */ 51 [0 ... UM_NR_syscall_max] = &sys_ni_syscall, 52#include <asm-x86_64/unistd.h> 53}; 54