LXR linux/arch/x86/entry/syscall

   1// SPDX-License-Identifier: GPL-2.0
   2/* System call table for x86-64. */
   3
   4#include <linux/linkage.h>
   5#include <linux/sys.h>
   6#include <linux/cache.h>
   7#include <asm/asm-offsets.h>
   8#include <asm/syscall.h>
   9
  10/* this is a lie, but it does not hurt as sys_ni_syscall just returns -EINVAL */
  11extern asmlinkage long sys_ni_syscall(const struct pt_regs *);
  12#define __SYSCALL_64(nr, sym, qual) extern asmlinkage long sym(const struct pt_regs *);
  13#define __SYSCALL_X32(nr, sym, qual) __SYSCALL_64(nr, sym, qual)
  14#include <asm/syscalls_64.h>
  15#undef __SYSCALL_64
  16#undef __SYSCALL_X32
  17
  18#define __SYSCALL_64(nr, sym, qual) [nr] = sym,
  19#define __SYSCALL_X32(nr, sym, qual)
  20
  21asmlinkage const sys_call_ptr_t sys_call_table[__NR_syscall_max+1] = {
  22        /*
  23         * Smells like a compiler bug -- it doesn't work
  24         * when the & below is removed.
  25         */
  26        [0 ... __NR_syscall_max] = &sys_ni_syscall,
  27#include <asm/syscalls_64.h>
  28};
  29
  30#undef __SYSCALL_64
  31#undef __SYSCALL_X32
  32
  33#ifdef CONFIG_X86_X32_ABI
  34
  35#define __SYSCALL_64(nr, sym, qual)
  36#define __SYSCALL_X32(nr, sym, qual) [nr] = sym,
  37
  38asmlinkage const sys_call_ptr_t x32_sys_call_table[__NR_syscall_x32_max+1] = {
  39        /*
  40         * Smells like a compiler bug -- it doesn't work
  41         * when the & below is removed.
  42         */
  43        [0 ... __NR_syscall_x32_max] = &sys_ni_syscall,
  44#include <asm/syscalls_64.h>
  45};
  46
  47#undef __SYSCALL_64
  48#undef __SYSCALL_X32
  49
  50#endif
  51