text: /*
   * This file is subject to the terms and conditions of the GNU General Public
   * License.  See the file "COPYING" in the main directory of this archive
   * for more details.
   *
   * Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 by Ralf Baechle
   * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
   */
  #ifndef _ASM_PTRACE_H
  #define _ASM_PTRACE_H
  
  /* 0 - 31 are integer registers, 32 - 63 are fp registers.  */
  #define FPR_BASE	32
  #define PC		64
  #define CAUSE		65
  #define BADVADDR	66
  #define MMHI		67
  #define MMLO		68
  #define FPC_CSR		69
  #define FPC_EIR		70
  #define DSP_BASE	71		/* 3 more hi / lo register pairs */
  #define DSP_CONTROL	77
  #define ACX		78
  
  /*
   * This struct defines the way the registers are stored on the stack during a
   * system call/exception. As usual the registers k0/k1 aren't being saved.
   */
  struct pt_regs {
  #ifdef CONFIG_32BIT
  	/* Pad bytes for argument save space on the stack. */
  	unsigned long pad0[6];
  #endif
  
  	/* Saved main processor registers. */
  	unsigned long regs[32];
  
  	/* Saved special registers. */
  	unsigned long cp0_status;
  	unsigned long hi;
  	unsigned long lo;
  #ifdef CONFIG_CPU_HAS_SMARTMIPS
  	unsigned long acx;
  #endif
  	unsigned long cp0_badvaddr;
  	unsigned long cp0_cause;
  	unsigned long cp0_epc;
  #ifdef CONFIG_MIPS_MT_SMTC
  	unsigned long cp0_tcstatus;
  #endif /* CONFIG_MIPS_MT_SMTC */
  #ifdef CONFIG_CPU_CAVIUM_OCTEON
  	unsigned long long mpl[3];        /* MTM{0,1,2} */
  	unsigned long long mtp[3];        /* MTP{0,1,2} */
  #endif
  } __attribute__ ((aligned (8)));
  
  /* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
  #define PTRACE_GETREGS		12
  #define PTRACE_SETREGS		13
  #define PTRACE_GETFPREGS		14
  #define PTRACE_SETFPREGS		15
  /* #define PTRACE_GETFPXREGS		18 */
  /* #define PTRACE_SETFPXREGS		19 */
  
  #define PTRACE_OLDSETOPTIONS	21
  
  #define PTRACE_GET_THREAD_AREA	25
  #define PTRACE_SET_THREAD_AREA	26
  
  /* Calls to trace a 64bit program from a 32bit program.  */
  #define PTRACE_PEEKTEXT_3264	0xc0
  #define PTRACE_PEEKDATA_3264	0xc1
  #define PTRACE_POKETEXT_3264	0xc2
  #define PTRACE_POKEDATA_3264	0xc3
  #define PTRACE_GET_THREAD_AREA_3264	0xc4
  
  /* Read and write watchpoint registers.  */
  enum pt_watch_style {
  	pt_watch_style_mips32,
  	pt_watch_style_mips64
  };
  struct mips32_watch_regs {
  	unsigned int watchlo[8];
  	/* Lower 16 bits of watchhi. */
  	unsigned short watchhi[8];
  	/* Valid mask and I R W bits.
  	 * bit 0 -- 1 if W bit is usable.
  	 * bit 1 -- 1 if R bit is usable.
  	 * bit 2 -- 1 if I bit is usable.
  	 * bits 3 - 11 -- Valid watchhi mask bits.
  	 */
  	unsigned short watch_masks[8];
  	/* The number of valid watch register pairs.  */
  	unsigned int num_valid;
  } __attribute__((aligned(8)));
  
  struct mips64_watch_regs {
  	unsigned long long watchlo[8];
  	unsigned short watchhi[8];
  	unsigned short watch_masks[8];
  	unsigned int num_valid;
  } __attribute__((aligned(8)));
  
  struct pt_watch_regs {
  	enum pt_watch_style style;
  	union {
  		struct mips32_watch_regs mips32;
  		struct mips64_watch_regs mips64;
  	};
  };
  
  #define PTRACE_GET_WATCH_REGS	0xd0
  #define PTRACE_SET_WATCH_REGS	0xd1
  
  #ifdef __KERNEL__
  
  #include <linux/compiler.h>
  #include <linux/linkage.h>
  #include <linux/types.h>
  #include <asm/isadep.h>
  
  struct task_struct;
  
  extern int ptrace_getregs(struct task_struct *child, __s64 __user *data);
  extern int ptrace_setregs(struct task_struct *child, __s64 __user *data);
  
  extern int ptrace_getfpregs(struct task_struct *child, __u32 __user *data);
  extern int ptrace_setfpregs(struct task_struct *child, __u32 __user *data);
  
  extern int ptrace_get_watch_regs(struct task_struct *child,
  	struct pt_watch_regs __user *addr);
  extern int ptrace_set_watch_regs(struct task_struct *child,
  	struct pt_watch_regs __user *addr);
  
  /*
   * Does the process account for user or for system time?
   */
  #define user_mode(regs) (((regs)->cp0_status & KU_MASK) == KU_USER)
  
  #define instruction_pointer(regs) ((regs)->cp0_epc)
  #define profile_pc(regs) instruction_pointer(regs)
  
  extern asmlinkage void do_syscall_trace(struct pt_regs *regs, int entryexit);
  
  extern NORET_TYPE void die(const char *, struct pt_regs *) ATTRIB_NORET;
  
  static inline void die_if_kernel(const char *str, struct pt_regs *regs)
  {
  	if (unlikely(!user_mode(regs)))
  		die(str, regs);
  }
  
  #endif
  
  #endif /* _ASM_PTRACE_H */
  