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#ifndef _PPC_PTRACE_H

#define _PPC_PTRACE_H

/*

 * This struct defines the way the registers are stored on the

 * kernel stack during a system call or other kernel entry.

 *

 * this should only contain volatile regs

 * since we can keep non-volatile in the thread_struct

 * should set this up when only volatiles are saved

 * by intr code.

 *

 * Since this is going on the stack, *CARE MUST BE TAKEN* to insure

 * that the overall structure is a multiple of 16 bytes in length.

 *

 * Note that the offsets of the fields in this struct correspond with

 * the PT_* values below.  This simplifies arch/ppc/kernel/ptrace.c.

 */

#ifndef __ASSEMBLY__

struct pt_regs {

        unsigned long gpr[32];

        unsigned long nip;

        unsigned long msr;

        unsigned long orig_gpr3;        /* Used for restarting system calls */

        unsigned long ctr;

        unsigned long link;

        unsigned long xer;

        unsigned long ccr;

        unsigned long mq;               /* 601 only (not used at present) */

                                        /* Used on APUS to hold IPL value. */

        unsigned long trap;             /* Reason for being here */

        unsigned long dar;              /* Fault registers */

        unsigned long dsisr;            /* used for ESR on 4xx/Book-E */

        unsigned long result;           /* Result of a system call */

};

#endif

#ifdef __KERNEL__

#define STACK_FRAME_OVERHEAD    16      /* size of minimum stack frame */

/* Size of stack frame allocated when calling signal handler. */

#define __SIGNAL_FRAMESIZE      64

#define instruction_pointer(regs) ((regs)->nip)

#define user_mode(regs) (((regs)->msr & MSR_PR) != 0)

#endif /* __KERNEL__ */

/*

 * Offsets used by 'ptrace' system call interface.

 * These can't be changed without breaking binary compatibility

 * with MkLinux, etc.

 */

#define PT_R0   0

#define PT_R1   1

#define PT_R2   2

#define PT_R3   3

#define PT_R4   4

#define PT_R5   5

#define PT_R6   6

#define PT_R7   7

#define PT_R8   8

#define PT_R9   9

#define PT_R10  10

#define PT_R11  11

#define PT_R12  12

#define PT_R13  13

#define PT_R14  14

#define PT_R15  15

#define PT_R16  16

#define PT_R17  17

#define PT_R18  18

#define PT_R19  19

#define PT_R20  20

#define PT_R21  21

#define PT_R22  22

#define PT_R23  23

#define PT_R24  24

#define PT_R25  25

#define PT_R26  26

#define PT_R27  27

#define PT_R28  28

#define PT_R29  29

#define PT_R30  30

#define PT_R31  31

#define PT_NIP  32

#define PT_MSR  33

#ifdef __KERNEL__

#define PT_ORIG_R3 34

#endif

#define PT_CTR  35

#define PT_LNK  36

#define PT_XER  37

#define PT_CCR  38

#define PT_MQ   39

#define PT_FPR0 48      /* each FP reg occupies 2 slots in this space */

#define PT_FPR31 (PT_FPR0 + 2*31)

#define PT_FPSCR (PT_FPR0 + 2*32 + 1)

/* Get/set all the altivec registers vr0..vr31, vscr, vrsave, in one go */

#define PTRACE_GETVRREGS        18

#define PTRACE_SETVRREGS        19

#endif