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/* abstract.c -- Abstract entities header file

   Copyright (C) 1999 Damjan Lampret, lampret@opencores.org

This file is part of OpenRISC 1000 Architectural Simulator.

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, write to the Free Software

Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */

#define DEFAULT_MEMORY_START    0

#define DEFAULT_MEMORY_LEN      0x800000

#define STACK_SIZE      20

#define LABELNAME_LEN   50

#define INSNAME_LEN     15

#define OPERANDNAME_LEN 50

#define MAX_OPERANDS    (4)

/* Structure for holding several labels of a particular memory location */

struct label_entry {

  char *name;

  struct label_entry *next;

};

#define OP_MEM_ACCESS 0x80000000

/* This is an abstract memory type rather than physical memory type.  It holds

disassembled instructions.  */

struct mem_entry {

  unsigned char data;

  unsigned char brk;

  struct label_entry *label; /* labels */

};

enum insn_type { unknown, exception, arith, shift, compare, branch,

                 jump, load, store, movimm, move, extend, nop, mac };

/* Instruction queue */

struct iqueue_entry {

  enum insn_type func_unit;

  int insn_index;

  unsigned long insn;

  unsigned long op[2 * MAX_OPERANDS];

  unsigned long insn_addr;

};

/* Memory regions assigned to devices */

struct dev_memarea {

  struct dev_memarea *next;

  unsigned long start;

  unsigned long end;

  unsigned long size;

  unsigned char (*readfunc)(unsigned long);

  void (*writefunc)(unsigned long, unsigned char);

  struct mem_entry* (*getentry) (unsigned long);

  /* private data */

  unsigned long misc;

};

extern struct iqueue_entry iqueue[20];

extern struct iqueue_entry icomplet[20];

extern unsigned long pc;

extern void dumpmemory(unsigned int from, unsigned int to, int disasm);

extern unsigned long eval_label(char *label);

extern unsigned long eval_mem32(unsigned long memaddr,int*);

extern unsigned short eval_mem16(unsigned long memaddr,int*);

extern unsigned char eval_mem8(unsigned long memaddr,int*);

extern void set_mem32(unsigned long memaddr, unsigned long value,int*);

extern void set_mem16(unsigned long memaddr, unsigned short value,int*);

extern void set_mem8(unsigned long memaddr, unsigned char value,int*);

unsigned long evalsim_mem32(unsigned long);

unsigned short evalsim_mem16(unsigned long);

unsigned char evalsim_mem8(unsigned long);

void setsim_mem32(unsigned long,unsigned long);

void setsim_mem16(unsigned long,unsigned short);

void setsim_mem8(unsigned long,unsigned char);

void sim_read_memory_table (char *filename);

/* Register read and write function for a memory area (used by peripheral

   devices like 16450 UART etc.) */

void register_memoryarea(unsigned long start, unsigned long size, unsigned char (readfunc)(unsigned long),

                         void (writefunc)(unsigned long, unsigned char), struct mem_entry *(getentry)(unsigned long));

/* Check if access is to registered area of memory. */

struct dev_memarea *verify_memoryarea(unsigned long addr);

/* Temporary variable to increase speed.  */

extern struct dev_memarea *cur_area;

#ifndef DEBUGMOD_OFF

extern int GlobalMode; /* Added by CZ 26/05/01 */

#else /* DEBUGMOD_OFF */

#define GlobalMode 0

#endif /* DEBUGMOD_OFF */

/* Added by MM */

#ifndef LONGEST

#define LONGEST long long

#define ULONGEST unsigned long long

#endif /* ! LONGEST */