~thecatster/di0des

d819c249f81e08646c350c300043b1b725aab4a7 — Daniil Rose 2 years ago 6b32ee5 master 
Add more instructions to disassembler
patch browse .tar.gz 
1 files changed, 78 insertions(+), 46 deletions(-)

M src/main.c

M src/main.c => src/main.c +78 -46
@@ 1,12 1,12 @@
#include <stdlib.h>
#include <stdio.h>
#include <stdlib.h>

int disassemble_8080_op(unsigned char *codebuffer, int pc);

int main (int argc, char**argv) {
  FILE *f= fopen(argv[1], "rb");
int main(int argc, char **argv) {
  FILE *f = fopen(argv[1], "rb");

  if (f==NULL) {
  if (f == NULL) {
    printf("error: Couldn't open %s\n", argv[1]);
    exit(1);
  }


@@ 15,7 15,7 @@ int main (int argc, char**argv) {
  int fsize = ftell(f);
  fseek(f, 0L, SEEK_SET);

  unsigned char *buffer=malloc(fsize);
  unsigned char *buffer = malloc(fsize);

  fread(buffer, fsize, 1, f);
  fclose(f);


@@ 44,49 44,81 @@ int disassemble_8080_op(unsigned char *codebuffer, int pc) {
  unsigned char *code = &codebuffer[pc];
  int opbytes = 1;

  printf ("%04x ", pc);
  printf("%04x ", pc);

  switch (*code) {
    case 0x00:
      printf("NOP");
      break;
    case 0x01:
      printf("LXI    B,#$%02x%02x", code[2], code[1]);
      opbytes=3;
      break;
    case 0x02:
      printf("STAX   B");
      break;
    case 0x03:
      printf("INX    B");
      break;
    case 0x04:
      printf("INR    B");
      break;
    case 0x05:
      printf("DCR    B");
      break;
    case 0x06:
      printf("MVI    B,#$%02x", code[1]);
      opbytes=2;
      break;
    case 0x07:
      printf("RLC");
      break;
    case 0x08:
      printf("NOP");
      break;
      /* ........ */
    case 0x3e:
      printf("MVI    A,#0x%02x", code[1]);
      opbytes = 2;
      break;
      /* ........ */
    case 0xc3:
      printf("JMP    $%02x%02x", code[2], code[1]);
      opbytes = 3;
      break;
      /* ........ */
  case 0x00:
    printf("NOP");
    break;
  case 0x01:
    printf("LXI    B,#$%02x%02x", code[2], code[1]);
    opbytes = 3;
    break;
  case 0x02:
    printf("STAX   B");
    break;
  case 0x03:
    printf("INX    B");
    break;
  case 0x04:
    printf("INR    B");
    break;
  case 0x05:
    printf("DCR    B");
    break;
  case 0x06:
    printf("MVI    B,#$%02x", code[1]);
    opbytes = 2;
    break;
  case 0x07:
    printf("RLC");
    break;
  case 0x08:
    printf("NOP");
    break;
  case 0x09:
    printf("DAD    B");
    break;
  case 0x0a:
    printf("LDAX   B");
    break;
  case 0x0b:
    printf("DCX    B");
    break;
  case 0x0c:
    printf("INR    C");
    break;
  case 0x0d:
    printf("DCR    C");
    break;
  case 0x0e:
    printf("MVI    C,#$%02x", code[1]);
    opbytes = 2;
    break;
  case 0x0f:
    printf("RRC");
    break;
  case 0x10:
    printf("NOP");
    break;
  case 0x11:
    printf("LXI    D,#$%02x%02x", code[2], code[1]);
    opbytes = 3;
    break;
  case 0x12:
    printf("STAX   D");
    break;
  /* ........ */
  case 0x3e:
    printf("MVI    A,#0x%02x", code[1]);
    opbytes = 2;
    break;
    /* ........ */
  case 0xc3:
    printf("JMP    $%02x%02x", code[2], code[1]);
    opbytes = 3;
    break;
    /* ........ */
  }

  printf("\n");