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/*
  File for analysis of an architecture's instructions in binary format
 
  Julius Baxter, julius.baxter@orsoc.se
 
*/
 
#include<stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <arpa/inet.h> // for htonl()
 
#include "insnanalysis.h"
 
// Access to list management functions
#include "insn-lists.h"
 
int analyse_insn(instruction insn,
		 instruction_properties *insn_props)
{
  // For now no other instruction sets supported
  return or1k_32_analyse_insn(insn, insn_props);
}
 
 
void print_insn(instruction_properties *insn_props)
{
  if (insn_props->insn_string != NULL)
    printf("%s", insn_props->insn_string);
}
 
void collect_stats(instruction insn,
		 instruction_properties *insn_props)
{
  or1k_32_collect_stats(insn, insn_props);
}
 
 
void generate_stats(FILE * stream)
{
  or1k_32_generate_stats(stream);
}
 
int main(int argc, char *argv[])
{
  FILE *fp;
 
  char insn_buff[INSN_SIZE_BYTES]; // Buffer for instruction data
 
  int insns_seen_total = 0; // Keep track of total number of instructions read
 
  // Try to open the file passed as first parameter
  if((fp = fopen(argv[ 1 ], "rb"))==NULL) {
    printf("Cannot open file.\n");
    exit(1);
  }
 
  instruction * insn = (instruction *)insn_buff;
 
  instruction_properties insn_props;
 
  // Do initial analysis - frequency of each instruction
 
  insn_lists_init();
 
  while(!feof(fp)) {
 
    if (fread(insn_buff, INSN_SIZE_BYTES, 1, fp) != 1)
      break;
 
    // Endianness is little when read in from binary file created with 
    // or32-elf-objcopy, so swap;
    *insn = htonl(*insn);
 
    if (*insn == 0) // most probably dead space in binary, skip
      continue;
 
    reset_instruction_properties(&insn_props);
 
    if (analyse_insn(*insn, &insn_props) == 0)
      {
	/*
	print_insn(&insn_props);    
	printf("\n");
	*/
	insns_seen_total++;
 
	collect_stats(*insn, &insn_props);
      }
    else
      {
	printf("\n");
      }
 
  }
 
  fclose(fp);
 
  printf("Saw %d instructions\n", insns_seen_total);
 
  generate_stats(stdout);
 
  insn_lists_free();
 
  return 0;
 
}