git.mutantstargoat.com Git - rpikern/blob - src/debug.c

   1 #include <stdio.h>
   2 #include <ctype.h>
   3 #include "debug.h"
   4
   5
   6 void hexdump(void *start, int nbytes)
   7 {
   8         int i, j, nlines;
   9         unsigned char *ptr = start;
  10         unsigned char *end = ptr + nbytes;
  11
  12         nlines = (nbytes + 0xf) >> 4;
  13
  14         for(i=0; i<nlines; i++) {
  15                 printf("%08x  ", (uint32_t)ptr);
  16
  17                 for(j=0; j<16; j++) {
  18                         if(ptr + j < end) {
  19                                 printf("%02x ", ptr[j]);
  20                         } else {
  21                                 printf("   ");
  22                         }
  23                         if((j & 7) == 7) putchar(' ');
  24                 }
  25
  26                 putchar('|');
  27                 for(j=0; j<16; j++) {
  28                         if(ptr + j < end) {
  29                                 putchar(isprint(ptr[j]) ? ptr[j] : '.');
  30                         } else {
  31                                 putchar(' ');
  32                         }
  33                 }
  34                 printf("|\n");
  35
  36                 ptr += 16;
  37         }
  38 }