/* * 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> #include <asm/syscall.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 sys_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_execveat sys_execveat #define stub_rt_sigreturn sys_rt_sigreturn #define __SYSCALL_64(nr, sym, qual) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long) ; #include <asm/syscalls_64.h> #undef __SYSCALL_64 #define __SYSCALL_64(nr, sym, qual) [ nr ] = sym, extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); 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); |