src/lib/hexdump.c

/*
 * Copyright 2013 Google Inc.
 *
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License as
 * published by the Free Software Foundation; either version 2 of
 * the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but without any warranty; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 */

#include <console/console.h>
#include <lib.h>

static int isprint(int c)
{
	return (c >= 32 && c <= 126);
}

void hexdump(const void *memory, size_t length)
{
	int i;
	uint8_t *m;
	int all_zero = 0;

	m = (uint8_t *) memory;

	for (i = 0; i < length; i += 16) {
		int j;
		int left = MIN(length - i, 16);

		if (left < 16) {
			all_zero = 0;
		} else {
			all_zero++;
			for (j = 0; j < 16; j++) {
				if (m[i + j] != 0) {
					all_zero = 0;
					break;
				}
			}
		}

		if (all_zero < 2) {
			printk(BIOS_DEBUG, "%p:", memory + i);
			for (j = 0; j < left; j++)
				printk(BIOS_DEBUG, " %02x", m[i + j]);
			for (j = left; j < 16; j++)
				printk(BIOS_DEBUG, "   ");
			printk(BIOS_DEBUG, "  ");
			for (j = 0; j < left; j++)
				printk(BIOS_DEBUG, "%c",
				       isprint(m[i + j]) ? m[i + j] : '.');
			printk(BIOS_DEBUG, "\n");
		} else if (all_zero == 2) {
			printk(BIOS_DEBUG, "...\n");
		}
	}
}

void hexdump32(char LEVEL, const void *d, size_t len)
{
	int count = 0;

	while (len > 0) {
		if (count % 8 == 0) {
			printk(LEVEL, "\n");
			printk(LEVEL, "%p:", d);
		}
		printk(LEVEL, " 0x%08lx", *(unsigned long *)d);
		count++;
		len--;
		d += 4;
	}

	printk(LEVEL, "\n\n");
}