[deliverable/linux.git] / arch / x86 / um / sys_call_table_64.c

/*
 * System call table for UML/x86-64, copied from arch/x86/kernel/syscall_*.c
 * with some changes for UML.
 */

#include <linux/linkage.h>
#include <linux/sys.h>
#include <linux/cache.h>
#include <generated/user_constants.h>

#define __NO_STUBS

/*
 * Below you can see, in terms of #define's, the differences between the x86-64
 * and the UML syscall table.
 */

/* Not going to be implemented by UML, since we have no hardware. */
#define sys_iopl sys_ni_syscall
#define sys_ioperm sys_ni_syscall

/*
 * The UML TLS problem. Note that x86_64 does not implement this, so the below
 * is needed only for the ia32 compatibility.
 */

/* On UML we call it this way ("old" means it's not mmap2) */
#define sys_mmap old_mmap

#define stub_clone sys_clone
#define stub_fork sys_fork
#define stub_vfork sys_vfork
#define stub_execve sys_execve
#define stub_execveat sys_execveat
#define stub_rt_sigreturn sys_rt_sigreturn

#define __SYSCALL_COMMON(nr, sym, compat) __SYSCALL_64(nr, sym, compat)
#define __SYSCALL_X32(nr, sym, compat) /* Not supported */

#define __SYSCALL_64(nr, sym, compat) extern asmlinkage void sym(void) ;
#include <asm/syscalls_64.h>

#undef __SYSCALL_64
#define __SYSCALL_64(nr, sym, compat) [ nr ] = sym,

typedef void (*sys_call_ptr_t)(void);

extern void sys_ni_syscall(void);

const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = {
	/*
	 * Smells like a compiler bug -- it doesn't work
	 * when the & below is removed.
	 */
	[0 ... __NR_syscall_max] = &sys_ni_syscall,
#include <asm/syscalls_64.h>
};

int syscall_table_size = sizeof(sys_call_table);
Commit	Line	Data
95906b24	1	/*
45db1c61	2	* System call table for UML/x86-64, copied from arch/x86/kernel/syscall_*.c
95906b24 JD	3	* with some changes for UML.
95906b24 JD	4	*/
80f95078 PBG	5
	6	#include <linux/linkage.h>
	7	#include <linux/sys.h>
	8	#include <linux/cache.h>
45db1c61	9	#include <generated/user_constants.h>
80f95078 PBG	10
	11	#define __NO_STUBS
	12
95906b24 JD	13	/*
	14	* Below you can see, in terms of #define's, the differences between the x86-64
	15	* and the UML syscall table.
	16	*/
80f95078 PBG	17
80f95078 PBG	18	/* Not going to be implemented by UML, since we have no hardware. */
616ab249	19	#define sys_iopl sys_ni_syscall
80f95078 PBG	20	#define sys_ioperm sys_ni_syscall
80f95078 PBG	21
95906b24 JD	22	/*
	23	* The UML TLS problem. Note that x86_64 does not implement this, so the below
	24	* is needed only for the ia32 compatibility.
	25	*/
80f95078	26
80f95078 PBG	27	/* On UML we call it this way ("old" means it's not mmap2) */
80f95078 PBG	28	#define sys_mmap old_mmap
80f95078 PBG	29
	30	#define stub_clone sys_clone
	31	#define stub_fork sys_fork
	32	#define stub_vfork sys_vfork
	33	#define stub_execve sys_execve
27d6ec7a	34	#define stub_execveat sys_execveat
80f95078 PBG	35	#define stub_rt_sigreturn sys_rt_sigreturn
80f95078 PBG	36
6630f11b PA	37	#define __SYSCALL_COMMON(nr, sym, compat) __SYSCALL_64(nr, sym, compat)
	38	#define __SYSCALL_X32(nr, sym, compat) /* Not supported */
	39
45db1c61 PA	40	#define __SYSCALL_64(nr, sym, compat) extern asmlinkage void sym(void) ;
45db1c61 PA	41	#include <asm/syscalls_64.h>
80f95078	42
45db1c61 PA	43	#undef __SYSCALL_64
45db1c61 PA	44	#define __SYSCALL_64(nr, sym, compat) [ nr ] = sym,
80f95078 PBG	45
	46	typedef void (*sys_call_ptr_t)(void);
	47
	48	extern void sys_ni_syscall(void);
	49
b485342b	50	const sys_call_ptr_t sys_call_table[] ____cacheline_aligned = {
45db1c61 PA	51	/*
	52	* Smells like a compiler bug -- it doesn't work
	53	* when the & below is removed.
	54	*/
	55	[0 ... __NR_syscall_max] = &sys_ni_syscall,
	56	#include <asm/syscalls_64.h>
80f95078	57	};
f87ea91d JD	58
f87ea91d JD	59	int syscall_table_size = sizeof(sys_call_table);