/*
 * File:         include/asm-blackfin/kgdb.h
 * Based on:
 * Author:       Sonic Zhang
 *
 * Created:
 * Description:
 *
 * Rev:          $Id: kgdb_bfin_linux-2.6.x.patch 4934 2007-02-13 09:32:11Z sonicz $
 *
 * Modified:
 *               Copyright 2005-2006 Analog Devices Inc.
 *
 * Bugs:         Enter bugs at http://blackfin.uclinux.org/
 *
 * 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.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, see the file COPYING, or write
 * to the Free Software Foundation, Inc.,
 * 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
 */

#ifndef __ASM_BLACKFIN_KGDB_H__
#define __ASM_BLACKFIN_KGDB_H__

#include <linux/ptrace.h>

/* gdb locks */
#define KGDB_MAX_NO_CPUS 8

/************************************************************************/
/* BUFMAX defines the maximum number of characters in inbound/outbound buffers*/
/* at least NUMREGBYTES*2 are needed for register packets */
/* Longer buffer is needed to list all threads */
#define BUFMAX 2048

/*
 *  Note that this register image is different from
 *  the register image that Linux produces at interrupt time.
 *  
 *  Linux's register image is defined by struct pt_regs in ptrace.h.
 */
enum regnames {
  /* Core Registers */
  BFIN_R0 = 0,
  BFIN_R1,
  BFIN_R2,
  BFIN_R3,
  BFIN_R4,
  BFIN_R5,
  BFIN_R6,
  BFIN_R7,
  BFIN_P0,
  BFIN_P1,
  BFIN_P2,
  BFIN_P3,
  BFIN_P4,
  BFIN_P5,
  BFIN_SP,
  BFIN_FP,
  BFIN_I0,
  BFIN_I1,
  BFIN_I2,
  BFIN_I3,
  BFIN_M0,
  BFIN_M1,
  BFIN_M2,
  BFIN_M3,
  BFIN_B0,
  BFIN_B1,
  BFIN_B2,
  BFIN_B3,
  BFIN_L0,
  BFIN_L1,
  BFIN_L2,
  BFIN_L3,
  BFIN_A0_DOT_X,
  BFIN_A0_DOT_W,
  BFIN_A1_DOT_X,
  BFIN_A1_DOT_W,
  BFIN_ASTAT,
  BFIN_RETS,
  BFIN_LC0,
  BFIN_LT0,
  BFIN_LB0,
  BFIN_LC1,
  BFIN_LT1,
  BFIN_LB1,
  BFIN_CYCLES,
  BFIN_CYCLES2,
  BFIN_USP,
  BFIN_SEQSTAT,
  BFIN_SYSCFG,
  BFIN_RETI,
  BFIN_RETX,
  BFIN_RETN,
  BFIN_RETE,
  
  /* Pseudo Registers */
  BFIN_PC,
  BFIN_CC,
  BFIN_EXTRA1,		/* Address of .text section.  */
  BFIN_EXTRA2,		/* Address of .data section.  */
  BFIN_EXTRA3,		/* Address of .bss section.  */
  BFIN_FDPIC_EXEC, 
  BFIN_FDPIC_INTERP,

  /* MMRs */
  BFIN_IPEND,

  /* LAST ENTRY SHOULD NOT BE CHANGED.  */
  BFIN_NUM_REGS		/* The number of all registers.  */
};

/* Number of bytes of registers.  */
#define NUMREGBYTES BFIN_NUM_REGS*4

static inline void arch_kgdb_breakpoint(void)
{
	asm("   EXCPT 2;");
}
#define BREAK_INSTR_SIZE	2
#define CACHE_FLUSH_IS_SAFE	1
#define HW_INST_WATCHPOINT_NUM	6
#define HW_WATCHPOINT_NUM	8
#define TYPE_INST_WATCHPOINT	0
#define TYPE_DATA_WATCHPOINT	1

/* Instruction watchpoint address control register bits mask */
#define WPPWR		0x1
#define WPIREN01	0x2
#define WPIRINV01	0x4
#define WPIAEN0		0x8
#define WPIAEN1		0x10
#define WPICNTEN0	0x20
#define WPICNTEN1	0x40
#define EMUSW0		0x80
#define EMUSW1		0x100
#define WPIREN23	0x200
#define WPIRINV23	0x400
#define WPIAEN2		0x800
#define WPIAEN3		0x1000
#define WPICNTEN2	0x2000
#define WPICNTEN3	0x4000
#define EMUSW2		0x8000
#define EMUSW3		0x10000
#define WPIREN45	0x20000
#define WPIRINV45	0x40000
#define WPIAEN4		0x80000
#define WPIAEN5		0x100000
#define WPICNTEN4	0x200000
#define WPICNTEN5	0x400000
#define EMUSW4		0x800000
#define EMUSW5		0x1000000
#define WPAND		0x2000000

/* Data watchpoint address control register bits mask */
#define WPDREN01	0x1
#define WPDRINV01	0x2
#define WPDAEN0		0x4
#define WPDAEN1		0x8
#define WPDCNTEN0	0x10
#define WPDCNTEN1	0x20

#define WPDSRC0		0xc0
#define WPDACC0_OFFSET	8
#define WPDSRC1		0xc00
#define WPDACC1_OFFSET	12

/* Watchpoint status register bits mask */
#define STATIA0		0x1
#define STATIA1		0x2
#define STATIA2		0x4
#define STATIA3		0x8
#define STATIA4		0x10
#define STATIA5		0x20
#define STATDA0		0x40
#define STATDA1		0x80

#endif