xref: /linux/arch/x86/entry/syscall_64.c (revision 17cfcb68af3bc7d5e8ae08779b1853310a2949f3)
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 */
11 extern 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 
21 asmlinkage 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 
38 asmlinkage 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