fakelef.c

MP3解码的ASIC全部过程

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "constants.h"

int main(int argv, char* argc[])
{
	lef_file	lef;
	FILE* ifile;
	FILE* ofile;
	char ch;
	int  ok, pos, i;
	char command[32];
    float xpos, pin_distance;

	if (argv == 6) {
		strcpy(lef.name, argc[1]);
		lef.xsize = (((int)((atof(argc[2])+1.499)/1.5)))*1.5;
		lef.ysize = (((int)((atof(argc[3])+1.499)/1.5)))*1.5;
		lef.data_bits = atoi(argc[4]);
		lef.addr_bits = atoi(argc[5]);
	
		memcpy(lef.type, lef.name, 4);
		lef.type[4] = '\0';

		strcpy(lef.filename, lef.name);
		strcat(lef.filename, ".lef\0");

		printf("Generating %s with %d data bits and %d address bits...", lef.filename, lef.data_bits, lef.addr_bits);

		ifile = fopen(lef.type, "r");
		ofile = fopen(lef.filename, "w");

		ok = fscanf(ifile, "%c", &ch);
		while (ok != EOF) {
			if (ch != '%')
				fprintf(ofile, "%c", ch);
			else {
				fscanf(ifile, "%c", &ch);
				pos = 0;
				while (ch != '%') {
					command[pos++] = ch;
					fscanf(ifile, "%c", &ch);
				}
				command[pos] = '\0';

				if (strcmp(command, "NAME") == 0) 
					fprintf(ofile, "%s", lef.name);
				if (strcmp(command, "XSIZE") == 0) 
					fprintf(ofile, "%0.2f", lef.xsize);
				if (strcmp(command, "YSIZE") == 0) 
					fprintf(ofile, "%0.2f", lef.ysize);
				if (strcmp(command, "PINS") == 0) {
                    pin_distance = (int)(lef.xsize / (15+lef.addr_bits+2*lef.data_bits)); 
                    xpos = 10*pin_distance;      
					for (i = 0; i < lef.addr_bits; i++) {
						fprintf(ofile, "    PIN A<%d>\n        DIRECTION INPUT ;\n        PORT\n        LAYER metal2 ;\n        RECT  %.2f 1.90 %.2f 5.30 ;\n        END\n    END A<%d>\n", i, xpos, xpos+0.5, i);    
	                    xpos = xpos + pin_distance;
					}
					for (i = 0; i < lef.data_bits; i++) {
						fprintf(ofile, "    PIN D<%d>\n        DIRECTION INPUT ;\n        PORT\n        LAYER metal2 ;\n        RECT  %.2f 1.90 %.2f 5.30 ;\n        END\n    END D<%d>\n", i, xpos, xpos+0.5, i);    
	                    xpos = xpos + pin_distance;
					}
					for (i = 0; i < lef.data_bits; i++) {
						fprintf(ofile, "    PIN Q<%d>\n        DIRECTION INPUT ;\n        PORT\n        LAYER metal2 ;\n        RECT  %.2f 1.90 %.2f 5.30 ;\n        END\n    END Q<%d>\n", i, xpos, xpos+0.5, i);    
	                    xpos = xpos + pin_distance;
					}
				}
			}
			ok = fscanf(ifile, "%c", &ch);
		}

		printf("done\n\n");
	}
	else
		printf("usage: fakelef <mem name> <x size> <y size> <data bits> <addr_bits>\n\nSupports SPS2 SPS4 and ROMD\n\n\t<mem name>  = SPS4_96x16\n\t<x size>    = 100.50\n\t<y size>    = 250.50\n\t<data bits> = 16\n\t<addr bits> = 7\n\n");

	return 0;
}