diff options
| -rw-r--r-- | payloads/libpayload/include/libpayload.h | 1 | ||||
| -rw-r--r-- | payloads/libpayload/libc/hexdump.c | 64 |
2 files changed, 65 insertions, 0 deletions
diff --git a/payloads/libpayload/include/libpayload.h b/payloads/libpayload/include/libpayload.h index f23fb8763b..8e03c0b5b5 100644 --- a/payloads/libpayload/include/libpayload.h +++ b/payloads/libpayload/include/libpayload.h @@ -293,6 +293,7 @@ long int labs(long int j); long long int llabs(long long int j); u8 bin2hex(u8 b); u8 hex2bin(u8 h); +void hexdump(void *memory, int length); void fatal(const char *msg) __attribute__ ((noreturn)); /** @} */ diff --git a/payloads/libpayload/libc/hexdump.c b/payloads/libpayload/libc/hexdump.c new file mode 100644 index 0000000000..e4aa8b93cf --- /dev/null +++ b/payloads/libpayload/libc/hexdump.c @@ -0,0 +1,64 @@ +/* + * This file is part of the libpayload project. + * + * Copyright 2013 Google Inc. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include <libpayload.h> + +void hexdump(void *memory, int length) +{ + int i; + uint8_t *m; + int all_zero = 0; + + m = (uint8_t *) memory; + + for (i = 0; i < length; i += 16) { + int j; + + all_zero++; + for (j = 0; j < 16; j++) { + if (m[i + j] != 0) { + all_zero = 0; + break; + } + } + + if (all_zero < 2) { + printf("%08lx:", memory + i); + for (j = 0; j < 16; j++) + printf(" %02x", m[i + j]); + printf(" "); + for (j = 0; j < 16; j++) + printf("%c", + isprint(m[i + j]) ? m[i + j] : '.'); + printf("\n"); + } else if (all_zero == 2) { + printf("...\n"); + } + } +} |