arch/x86/um/sys_call_table_32.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * System call table for UML/i386, copied from arch/x86/kernel/syscall_*.c
   4  * with some changes for UML.
   5  */
   6
   7 #include <linux/linkage.h>
   8 #include <linux/sys.h>
   9 #include <linux/cache.h>
  10 #include <asm/syscall.h>
  11
  12 extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long,
  13                                       unsigned long, unsigned long,
  14                                       unsigned long, unsigned long);
  15
  16 /*
  17  * Below you can see, in terms of #define's, the differences between the x86-64
  18  * and the UML syscall table.
  19  */
  20
  21 /* Not going to be implemented by UML, since we have no hardware. */
  22 #define sys_iopl sys_ni_syscall
  23 #define sys_ioperm sys_ni_syscall
  24
  25 #define sys_vm86old sys_ni_syscall
  26 #define sys_vm86 sys_ni_syscall
  27
  28 #define __SYSCALL_WITH_COMPAT(nr, native, compat)       __SYSCALL(nr, native)
  29 #define __SYSCALL_NORETURN __SYSCALL
  30
  31 #define __SYSCALL(nr, sym) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long);
  32 #include <asm/syscalls_32.h>
  33 #undef  __SYSCALL
  34
  35 #define __SYSCALL(nr, sym) sym,
  36 const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = {
  37 #include <asm/syscalls_32.h>
  38 };
  39
  40 int syscall_table_size = sizeof(sys_call_table);