main.c

DM64+系列 interpreter 程序

/*
 *  Copyright 2002 by Texas Instruments Incorporated.
 *  All rights reserved. Property of Texas Instruments Incorporated.
 *  Restricted rights to use, duplicate or disclose this code are
 *  granted through contract.
 *  
 */

#include "proc.h"
#include "decode.h"


global_t global;

/* Initialize the register set */

void init_globals(void){
	int i = 0;
	for (i = 0; i < MAX_REG_SET; i++){
		REG(i) = 0;
	}
}

/*
Following instructions are supported

Instructions     Eg. Syntax     	Meaning

MOV				 MOV A B			A = B
MOVI			 MOVI A 100			A = 100
ADD				 ADD A B			A = A + B
ADDI			 ADDI A 100			A = A + 100
SUB				 SUB A B			A = A - B
SUBI			 SUB A 100			A = A - 100
MULT			 MULT A B			A = A * B
MULTI			 MULTI A 100		A = A * 100
DIV				 DIV A B			A = A / B
DIVI			 DIV A 100			A = A / 100

READ			 READ A				Read A from stdin
WRITE			 WRITE A			Write A to stdout

Registers available are A, B, C,....,Y, Z
;Comments begin with a semi-colon(;)
*/


/* 
The files which contain the input program are listed in
a file named testcase_list. This file should in a 
directory above COFF directory (usually the project directory). 
The paths of all files in the list file should either be 
absolute or relative to the COFF directory.

The main function reads the list of input file names
from the list file. It then decodes the program in the
input file.
*/

int main(void){

	char file_name[1024];
	FILE * test_list = NULL;
	FILE * test_file = NULL;
	test_list = fopen("../testcase_list","r");

	if (test_list != NULL){
		/* Get the next test case file name */	
		while (fscanf(test_list,"%s",file_name) != EOF){
			test_file = fopen(file_name,"r");
			if (test_file == NULL){
				printf("Unable to open file %s for reading\n",file_name);
				continue;
			}
			printf("\n*********** READING INPUT FILE %s ***********\n",file_name);
			
			/* Initialize globals */
			init_globals();
	
			/* Send the file pointer to the decode unit for decoding */
			decode(test_file);
		}
	}
	else{
		printf("Error: Unable to locate test case list file\n");
	}
	return 1; 
}