#ifndef _ASMAXP_PTRACE_H
  #define _ASMAXP_PTRACE_H
  
  
  /*
   * This struct defines the way the registers are stored on the
   * kernel stack during a system call or other kernel entry
   *
   * NOTE! I want to minimize the overhead of system calls, so this
   * struct has as little information as possible.  I does not have
   *
   *  - floating point regs: the kernel doesn't change those
   *  - r9-15: saved by the C compiler
   *
   * This makes "fork()" and "exec()" a bit more complex, but should
   * give us low system call latency.
   */
  
  struct pt_regs {
  	unsigned long r0;
  	unsigned long r1;
  	unsigned long r2;
  	unsigned long r3;
  	unsigned long r4;
  	unsigned long r5;
  	unsigned long r6;
  	unsigned long r7;
  	unsigned long r8;
  	unsigned long r19;
  	unsigned long r20;
  	unsigned long r21;
  	unsigned long r22;
  	unsigned long r23;
  	unsigned long r24;
  	unsigned long r25;
  	unsigned long r26;
  	unsigned long r27;
  	unsigned long r28;
  	unsigned long hae;
  /* JRP - These are the values provided to a0-a2 by PALcode */
  	unsigned long trap_a0;
  	unsigned long trap_a1;
  	unsigned long trap_a2;
  /* These are saved by PAL-code: */
  	unsigned long ps;
  	unsigned long pc;
  	unsigned long gp;
  	unsigned long r16;
  	unsigned long r17;
  	unsigned long r18;
  };
  
  /*
   * This is the extended stack used by signal handlers and the context
   * switcher: it's pushed after the normal "struct pt_regs".
   */
  struct switch_stack {
  	unsigned long r9;
  	unsigned long r10;
  	unsigned long r11;
  	unsigned long r12;
  	unsigned long r13;
  	unsigned long r14;
  	unsigned long r15;
  	unsigned long r26;
  	unsigned long fp[32];	/* fp[31] is fpcr */
  };
  
  #ifdef __KERNEL__

  
  #define __ARCH_SYS_PTRACE	1

  #define user_mode(regs) (((regs)->ps & 8) != 0)
  #define instruction_pointer(regs) ((regs)->pc)
  #define profile_pc(regs) instruction_pointer(regs)
  extern void show_regs(struct pt_regs *);

  #define task_pt_regs(task) \

    ((struct pt_regs *) (task_stack_page(task) + 2*PAGE_SIZE) - 1)

  #define force_successful_syscall_return() (task_pt_regs(current)->r0 = 0)

  
  #endif
  
  #endif