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#ifndef _PPC64_PTRACE_H

#define _PPC64_PTRACE_H

/*

 * Copyright (C) 2001 PPC64 Team, IBM Corp

 *

 * 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/ppc64/kernel/ptrace.c.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version

 * 2 of the License, or (at your option) any later version.

 */

#define INIT_TASK_SIZE                  4*PAGE_SIZE

#ifndef __ASSEMBLY__

#define PPC_REG unsigned long

struct pt_regs {

        PPC_REG gpr[32];

        PPC_REG nip;

        PPC_REG msr;

        PPC_REG orig_gpr3;      /* Used for restarting system calls */

        PPC_REG ctr;

        PPC_REG link;

        PPC_REG xer;

        PPC_REG ccr;

        PPC_REG softe;          /* Soft enabled/disabled */

        PPC_REG trap;           /* Reason for being here */

        PPC_REG dar;            /* Fault registers */

        PPC_REG dsisr;

        PPC_REG result;         /* Result of a system call */

};

#define PPC_REG_32 unsigned int

struct pt_regs32 {

        PPC_REG_32 gpr[32];

        PPC_REG_32 nip;

        PPC_REG_32 msr;

        PPC_REG_32 orig_gpr3;   /* Used for restarting system calls */

        PPC_REG_32 ctr;

        PPC_REG_32 link;

        PPC_REG_32 xer;

        PPC_REG_32 ccr;

        PPC_REG_32 mq;          /* 601 only (not used at present) */

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

        PPC_REG_32 trap;                /* Reason for being here */

        PPC_REG_32 dar;         /* Fault registers */

        PPC_REG_32 dsisr;

        PPC_REG_32 result;      /* Result of a system call */

};

#endif

#define STACK_FRAME_OVERHEAD    112     /* size of minimum stack frame */

/*

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

 * These *MUST* be multiples of 16 since the ABI requires stack frames

 * be quadword aligned.

 */

#define __SIGNAL_FRAMESIZE      128

#define __SIGNAL_FRAMESIZE32    64

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

#define user_mode(regs) ((((regs)->msr) >> MSR_PR_LG) & 0x1)

/*

 * Offsets used by 'ptrace' system call interface.

 */

#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_SOFTE 39

#define PT_RESULT 43

#define PT_FPR0 48

/* Kernel and userspace will both use this PT_FPSCR value.  32-bit apps will have

 * visibility to the asm-ppc/ptrace.h header instead of this one.

 */

#define PT_FPSCR (PT_FPR0 + 32 + 1)       /* each FP reg occupies 1 slot in 64-bit space */

#ifdef __KERNEL__

#define PT_FPSCR32 (PT_FPR0 + 2*32 + 1)   /* each FP reg occupies 2 32-bit userspace slots */

#endif

/* Additional PTRACE requests implemented on PowerPC. */

#define PPC_PTRACE_GETREGS            0x99  /* Get GPRs 0 - 31 */

#define PPC_PTRACE_SETREGS            0x98  /* Set GPRs 0 - 31 */

#define PPC_PTRACE_GETFPREGS        0x97  /* Get FPRs 0 - 31 */

#define PPC_PTRACE_SETFPREGS        0x96  /* Set FPRs 0 - 31 */

#define PPC_PTRACE_PEEKTEXT_3264  0x95  /* Read word at location ADDR on a 64-bit process from a 32-bit process. */

#define PPC_PTRACE_PEEKDATA_3264  0x94  /* Read word at location ADDR on a 64-bit process from a 32-bit process. */

#define PPC_PTRACE_POKETEXT_3264  0x93  /* Write word at location ADDR on a 64-bit process from a 32-bit process. */

#define PPC_PTRACE_POKEDATA_3264  0x92  /* Write word at location ADDR on a 64-bit process from a 32-bit process. */

#define PPC_PTRACE_PEEKUSR_3264   0x91  /* Read a register (specified by ADDR) out of the "user area" on a 64-bit process from a 32-bit process. */

#define PPC_PTRACE_POKEUSR_3264   0x90  /* Write DATA into location ADDR within the "user area" on a 64-bit process from a 32-bit process. */

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

#define PTRACE_GETVRREGS        18

#define PTRACE_SETVRREGS        19

#endif /* _PPC64_PTRACE_H */