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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 MEMORY_START	0
#define MEMORY_LEN	502400
#define STACK_SIZE	20
#define LABELNAME_LEN	50
#define INSNAME_LEN	15
#define OPERANDNAME_LEN 50
 
/* Structure for holding several labels of a particular memory location */
struct label_entry {
  char *name;
  struct label_entry *next;
};
 
/* Structure that holds disassembled instruction.  */
struct insn_entry {
  char *op1;
  char *op2;
  char *op3;
  char *op4;
  /* MM: Instruction index instead of insn name.  */
  int insn_index;
  unsigned int op[4][2];
};
 
#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 */
  struct insn_entry *insn; /* insn */
};
 
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;
  char op1[OPERANDNAME_LEN];
  char op2[OPERANDNAME_LEN];
  char op3[OPERANDNAME_LEN];
  char op4[OPERANDNAME_LEN];
  char *dependdst;
  char *dependsrc1;
  char *dependsrc2;
  unsigned long insn_addr;
};
 
/* Completition queue */
struct icomplet_entry {
  enum insn_type func_unit;
  int  insn_index;
  char op1[OPERANDNAME_LEN];
  char op2[OPERANDNAME_LEN];
  char op3[OPERANDNAME_LEN];
  char op4[OPERANDNAME_LEN];
  char *dependdst;
  char *dependsrc1;
  char *dependsrc2;
  unsigned long insn_addr;
};
 
/* Memory regions assigned to devices */
struct dev_memarea {
  struct dev_memarea *next;
  unsigned long baseaddr;
  unsigned long size;
  unsigned char (*readfunc)(unsigned long);
  void (*writefunc)(unsigned long, unsigned char);
};
 
extern struct iqueue_entry iqueue[20];
extern struct icomplet_entry icomplet[20];
extern unsigned long pc;
 
extern struct mem_entry mem[MEMORY_LEN];
extern void dumpmemory(unsigned int from, unsigned int to);
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,int*);
unsigned short evalsim_mem16(unsigned long,int*);
unsigned char evalsim_mem8(unsigned long,int*);
void setsim_mem32(unsigned long,unsigned long);
void setsim_mem16(unsigned long,unsigned short);
void setsim_mem8(unsigned long,unsigned char);
 
extern int GlobalMode; /* Added by CZ 26/05/01 */
 
/* Added by MM */
#ifndef LONGEST
 
#ifdef BFD64
 
#define LONGEST BFD_HOST_64_BIT
#define ULONGEST BFD_HOST_U_64_BIT
 
#else /* No BFD64 */
 
#ifdef CC_HAS_LONG_LONG
#define LONGEST long long
#define ULONGEST unsigned long long
#else
#ifdef BFD_HOST_64_BIT
/* BFD_HOST_64_BIT is defined for some hosts that don't have long long
   (e.g. i386-windows) so try it.  */
#define LONGEST BFD_HOST_64_BIT
#define ULONGEST BFD_HOST_U_64_BIT
#else
#define LONGEST long
#define ULONGEST unsigned long
#endif
#endif
 
#endif /* No BFD64 */
 
#endif /* ! LONGEST */