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#ifndef _PERSONALITY_H

#define _PERSONALITY_H

#include <linux/linkage.h>

#include <linux/ptrace.h>

/* Flags for bug emulation. These occupy the top three bytes. */

#define STICKY_TIMEOUTS         0x4000000

#define WHOLE_SECONDS           0x2000000

#define ADDR_MAX_32BIT          0x1000000

#define ADDR_MAX_31BIT          0x0800000

/* Personality types. These go in the low byte. Avoid using the top bit,

 * it will conflict with error returns.

 */

#define PER_MASK                (0x00ff)

#define PER_LINUX               (0x0000)

#define PER_LINUX_32BIT         (PER_LINUX | ADDR_MAX_32BIT)

#define PER_LINUX_EM86          (PER_LINUX | ADDR_MAX_31BIT)

#define PER_SVR4                (0x0001 | STICKY_TIMEOUTS)

#define PER_SVR3                (0x0002 | STICKY_TIMEOUTS)

#define PER_SCOSVR3             (0x0003 | STICKY_TIMEOUTS | WHOLE_SECONDS)

#define PER_WYSEV386            (0x0004 | STICKY_TIMEOUTS)

#define PER_ISCR4               (0x0005 | STICKY_TIMEOUTS)

#define PER_BSD                 (0x0006)

#define PER_XENIX               (0x0007 | STICKY_TIMEOUTS)

/* Prototype for an lcall7 syscall handler. */

typedef void (*lcall7_func)(struct pt_regs *);

/* Description of an execution domain - personality range supported,

 * lcall7 syscall handler, start up / shut down functions etc.

 * N.B. The name and lcall7 handler must be where they are since the

 * offset of the handler is hard coded in kernel/sys_call.S.

 */

struct exec_domain {

        const char *name;

        lcall7_func handler;

        unsigned char pers_low, pers_high;

        unsigned long * signal_map;

        unsigned long * signal_invmap;

        long *use_count;

        struct exec_domain *next;

};

extern struct exec_domain default_exec_domain;

extern struct exec_domain *lookup_exec_domain(unsigned long personality);

extern int register_exec_domain(struct exec_domain *it);

extern int unregister_exec_domain(struct exec_domain *it);

asmlinkage int sys_personality(unsigned long personality);

#endif /* _PERSONALITY_H */