xref: /openbmc/linux/arch/x86/entry/syscall_x32.c (revision dfc53baa)
1 // SPDX-License-Identifier: GPL-2.0
2 /* System call table for x32 ABI. */
3 
4 #include <linux/linkage.h>
5 #include <linux/sys.h>
6 #include <linux/cache.h>
7 #include <linux/syscalls.h>
8 #include <asm/unistd.h>
9 #include <asm/syscall.h>
10 
11 /*
12  * Reuse the 64-bit entry points for the x32 versions that occupy different
13  * slots in the syscall table.
14  */
15 #define __x32_sys_getsockopt	__x64_sys_getsockopt
16 #define __x32_sys_setsockopt	__x64_sys_setsockopt
17 
18 #define __SYSCALL_64(nr, sym)
19 
20 #define __SYSCALL_X32(nr, sym) extern long __x32_##sym(const struct pt_regs *);
21 #define __SYSCALL_COMMON(nr, sym) extern long __x64_##sym(const struct pt_regs *);
22 #include <asm/syscalls_64.h>
23 #undef __SYSCALL_X32
24 #undef __SYSCALL_COMMON
25 
26 #define __SYSCALL_X32(nr, sym) [nr] = __x32_##sym,
27 #define __SYSCALL_COMMON(nr, sym) [nr] = __x64_##sym,
28 
29 asmlinkage const sys_call_ptr_t x32_sys_call_table[__NR_x32_syscall_max+1] = {
30 	/*
31 	 * Smells like a compiler bug -- it doesn't work
32 	 * when the & below is removed.
33 	 */
34 	[0 ... __NR_x32_syscall_max] = &__x64_sys_ni_syscall,
35 #include <asm/syscalls_64.h>
36 };
37