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ptrace.h

#ifndef _ASM_M32R_PTRACE_H
#define _ASM_M32R_PTRACE_H

/*
 * linux/include/asm-m32r/ptrace.h
 *
 * 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.
 *
 * M32R version:
 *   Copyright (C) 2001-2002, 2004  Hirokazu Takata <takata at linux-m32r.org>
 */

/* 0 - 13 are integer registers (general purpose registers).  */
#define PT_R4           0
#define PT_R5           1
#define PT_R6           2
#define PT_REGS   3
#define PT_R0           4
#define PT_R1           5
#define PT_R2           6
#define PT_R3           7
#define PT_R7           8
#define PT_R8           9
#define PT_R9           10
#define PT_R10          11
#define PT_R11          12
#define PT_R12          13
#define PT_SYSCNR 14
#define PT_R13          PT_FP
#define PT_R14          PT_LR
#define PT_R15          PT_SP

/* processor status and miscellaneous context registers.  */
#define PT_ACC0H  15
#define PT_ACC0L  16
#define PT_ACC1H  17    /* ISA_DSP_LEVEL2 only */
#define PT_ACC1L  18    /* ISA_DSP_LEVEL2 only */
#define PT_PSW          19
#define PT_BPC          20
#define PT_BBPSW  21
#define PT_BBPC         22
#define PT_SPU          23
#define PT_FP           24
#define PT_LR           25
#define PT_SPI          26
#define PT_ORIGR0 27

/* virtual pt_reg entry for gdb */
#define PT_PC           30
#define PT_CBR          31
#define PT_EVB          32


/* Control registers.  */
#define SPR_CR0 PT_PSW
#define SPR_CR1 PT_CBR        /* read only */
#define SPR_CR2 PT_SPI
#define SPR_CR3 PT_SPU
#define SPR_CR4
#define SPR_CR5 PT_EVB        /* part of M32R/E, M32R/I core only */
#define SPR_CR6 PT_BPC
#define SPR_CR7
#define SPR_CR8 PT_BBPSW
#define SPR_CR9
#define SPR_CR10
#define SPR_CR11
#define SPR_CR12
#define SPR_CR13 PT_WR
#define SPR_CR14 PT_BBPC
#define SPR_CR15

/* this struct defines the way the registers are stored on the
   stack during a system call. */
struct pt_regs {
      /* Saved main processor registers. */
      unsigned long r4;
      unsigned long r5;
      unsigned long r6;
      struct pt_regs *pt_regs;
      unsigned long r0;
      unsigned long r1;
      unsigned long r2;
      unsigned long r3;
      unsigned long r7;
      unsigned long r8;
      unsigned long r9;
      unsigned long r10;
      unsigned long r11;
      unsigned long r12;
      long syscall_nr;

      /* Saved main processor status and miscellaneous context registers. */
      unsigned long acc0h;
      unsigned long acc0l;
      unsigned long acc1h;    /* ISA_DSP_LEVEL2 only */
      unsigned long acc1l;    /* ISA_DSP_LEVEL2 only */
      unsigned long psw;
      unsigned long bpc;            /* saved PC for TRAP syscalls */
      unsigned long bbpsw;
      unsigned long bbpc;
      unsigned long spu;            /* saved user stack */
      unsigned long fp;
      unsigned long lr;       /* saved PC for JL syscalls */
      unsigned long spi;            /* saved kernel stack */
      unsigned long orig_r0;
};

/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
#define PTRACE_GETREGS        12
#define PTRACE_SETREGS        13

#define PTRACE_OLDSETOPTIONS  21

/* options set using PTRACE_SETOPTIONS */
#define PTRACE_O_TRACESYSGOOD 0x00000001

#ifdef __KERNEL__

#include <asm/m32r.h>         /* M32R_PSW_BSM, M32R_PSW_BPM */

struct task_struct;
extern void init_debug_traps(struct task_struct *);
#define arch_ptrace_attach(child) \
      init_debug_traps(child)

#if defined(CONFIG_ISA_M32R2) || defined(CONFIG_CHIP_VDEC2)
#define user_mode(regs) ((M32R_PSW_BPM & (regs)->psw) != 0)
#elif defined(CONFIG_ISA_M32R)
#define user_mode(regs) ((M32R_PSW_BSM & (regs)->psw) != 0)
#else
#error unknown isa configuration
#endif

#define instruction_pointer(regs) ((regs)->bpc)
#define profile_pc(regs) instruction_pointer(regs)

extern void show_regs(struct pt_regs *);

extern void withdraw_debug_trap(struct pt_regs *regs);

#define task_pt_regs(task) \
        ((struct pt_regs *)(task_stack_page(task) + THREAD_SIZE) - 1)

#endif /* __KERNEL */

#endif /* _ASM_M32R_PTRACE_H */

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