diff options
Diffstat (limited to 'arch/x86/entry/syscall_32.c')
| -rw-r--r-- | arch/x86/entry/syscall_32.c | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/arch/x86/entry/syscall_32.c b/arch/x86/entry/syscall_32.c new file mode 100644 index 000000000..aa3336a7c --- /dev/null +++ b/arch/x86/entry/syscall_32.c @@ -0,0 +1,34 @@ +// SPDX-License-Identifier: GPL-2.0 +/* System call table for i386. */ + +#include <linux/linkage.h> +#include <linux/sys.h> +#include <linux/cache.h> +#include <asm/asm-offsets.h> +#include <asm/syscall.h> + +#ifdef CONFIG_IA32_EMULATION +/* On X86_64, we use struct pt_regs * to pass parameters to syscalls */ +#define __SYSCALL_I386(nr, sym, qual) extern asmlinkage long sym(const struct pt_regs *); + +/* this is a lie, but it does not hurt as sys_ni_syscall just returns -EINVAL */ +extern asmlinkage long sys_ni_syscall(const struct pt_regs *); + +#else /* CONFIG_IA32_EMULATION */ +#define __SYSCALL_I386(nr, sym, qual) extern asmlinkage long sym(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); +extern asmlinkage long sys_ni_syscall(unsigned long, unsigned long, unsigned long, unsigned long, unsigned long, unsigned long); +#endif /* CONFIG_IA32_EMULATION */ + +#include <asm/syscalls_32.h> +#undef __SYSCALL_I386 + +#define __SYSCALL_I386(nr, sym, qual) [nr] = sym, + +__visible const sys_call_ptr_t ia32_sys_call_table[__NR_syscall_compat_max+1] = { + /* + * Smells like a compiler bug -- it doesn't work + * when the & below is removed. + */ + [0 ... __NR_syscall_compat_max] = &sys_ni_syscall, +#include <asm/syscalls_32.h> +}; |