Subversion Repositories zpu

// zpuromgen.c

//

// Program to turn a binary file into a VHDL lookup table.

//   by Adam Pierce

//   29-Feb-2008

//

// This software is free to use by anyone for any purpose.

//

// To build:

//

// gcc -Wall zpuromgen.c -o zpuromgen

#include <unistd.h>

#include <stdio.h>

#include <limits.h>

#include <sys/types.h>

#include <fcntl.h>

int main(int argc, char **argv)

{

       u_int8_t    opcode[4];

       int     fd;

       int     addr = 0;

       ssize_t s;

// Check the user has given us an input file.

       if(argc < 2)

       {

               printf("Usage: %s <binary_file>\n\n", argv[0]);

               return 1;

       }

// Open the input file.

       fd = open(argv[1], 0);

       if(fd == -1)

       {

               perror("File Open");

               return 2;

       }

       while(1)

       {

       // Read 32 bits.

               s = read(fd, opcode, 4);

               if(s == -1)

               {

                       perror("File read");

                       return 3;

               }

               if(s == 0)

                       break; // End of file.

       // Output to STDOUT.

               printf("%6d => x\"%02x%02x%02x%02x\",\n",

                      addr++, opcode[0], opcode[1],

                      opcode[2], opcode[3]);

       }

       close(fd);

       return 0;

}