src/lib/hexdump.c

   1 /*
   2  * Copyright 2013 Google Inc.
   3  *
   4  * See file CREDITS for list of people who contributed to this
   5  * project.
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of
  10  * the License, or (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but without any warranty; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc.
  20  */
  21
  22 #include <console/console.h>
  23 #include <lib.h>
  24
  25 static int isprint(int c)
  26 {
  27         return (c >= 32 && c <= 126);
  28 }
  29
  30 void hexdump(const void *memory, size_t length)
  31 {
  32         int i;
  33         uint8_t *m;
  34         int all_zero = 0;
  35
  36         m = (uint8_t *) memory;
  37
  38         for (i = 0; i < length; i += 16) {
  39                 int j;
  40
  41                 all_zero++;
  42                 for (j = 0; j < 16; j++) {
  43                         if (m[i + j] != 0) {
  44                                 all_zero = 0;
  45                                 break;
  46                         }
  47                 }
  48
  49                 if (all_zero < 2) {
  50                         printk(BIOS_DEBUG, "%p:", memory + i);
  51                         for (j = 0; j < 16; j++)
  52                                 printk(BIOS_DEBUG, " %02x", m[i + j]);
  53                         printk(BIOS_DEBUG, "  ");
  54                         for (j = 0; j < 16; j++)
  55                                 printk(BIOS_DEBUG, "%c",
  56                                        isprint(m[i + j]) ? m[i + j] : '.');
  57                         printk(BIOS_DEBUG, "\n");
  58                 } else if (all_zero == 2) {
  59                         printk(BIOS_DEBUG, "...\n");
  60                 }
  61         }
  62 }
  63
  64 void hexdump32(char LEVEL, const void *d, size_t len)
  65 {
  66         int count = 0;
  67
  68         while (len > 0) {
  69                 if (count % 8 == 0) {
  70                         printk(LEVEL, "\n");
  71                         printk(LEVEL, "%p:", d);
  72                 }
  73                 printk(LEVEL, " 0x%08lx", *(unsigned long *)d);
  74                 count++;
  75                 len--;
  76                 d += 4;
  77         }
  78
  79         printk(LEVEL, "\n\n");
  80 }