xref: /linux/arch/x86/entry/syscall_64.c (revision 71dfa617ea9f18e4585fe78364217cd32b1fc382)
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 <linux/syscalls.h>
8 #include <asm/syscall.h>
9 
10 #define __SYSCALL(nr, sym) extern long __x64_##sym(const struct pt_regs *);
11 #include <asm/syscalls_64.h>
12 #undef __SYSCALL
13 
14 /*
15  * The sys_call_table[] is no longer used for system calls, but
16  * kernel/trace/trace_syscalls.c still wants to know the system
17  * call address.
18  */
19 #define __SYSCALL(nr, sym) __x64_##sym,
20 const sys_call_ptr_t sys_call_table[] = {
21 #include <asm/syscalls_64.h>
22 };
23 #undef __SYSCALL
24 
25 #define __SYSCALL(nr, sym) case nr: return __x64_##sym(regs);
26 
27 long x64_sys_call(const struct pt_regs *regs, unsigned int nr)
28 {
29 	switch (nr) {
30 	#include <asm/syscalls_64.h>
31 	default: return __x64_sys_ni_syscall(regs);
32 	}
33 };
34