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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	102400
#define STACK_SIZE	10000
#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 *insn;
	char *op1;
	char *op2;
	char *op3;
	char *op4;
};
 
/* 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 };
 
/* Instruction queue */
struct iqueue_entry {
	char insn[INSNAME_LEN];
	enum insn_type func_unit;
	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 {
	char insn[INSNAME_LEN];
	enum insn_type func_unit;
	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);
extern unsigned short eval_mem16(unsigned long memaddr);
extern unsigned char eval_mem8(unsigned long memaddr);
extern void set_mem32(unsigned long memaddr, unsigned long value);
extern void set_mem16(unsigned long memaddr, unsigned short value);
extern void set_mem8(unsigned long memaddr, unsigned char value);