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Code

lzma2eva: Endianness fixes.

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git-svn-id: svn://svn.openwrt.org/openwrt/trunk@18760 3c298f89-4303-0410-b956-a3cf2f4a3e73
This commit is contained in:
mb 2009-12-11 23:50:51 +00:00
parent 6655c7f910
commit 568c49ffd9
1 changed files with 88 additions and 26 deletions
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114
tools/firmware-utils/src/lzma2eva.c
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@ -22,11 +22,16 @@
#include <stdlib.h>
#include <zlib.h> /* crc32 */
#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
#define checksum_add32(csum, data) \
csum += ((uint8_t *)&data)[0]; \
csum += ((uint8_t *)&data)[1]; \
csum += ((uint8_t *)&data)[2]; \
csum += ((uint8_t *)&data)[3];
do { \
csum += (((data) >> 0) & 0x000000FF); \
csum += (((data) >> 8) & 0x000000FF); \
csum += (((data) >> 16) & 0x000000FF); \
csum += (((data) >> 24) & 0x000000FF); \
} while (0)
void
usage(void)
@ -42,10 +47,68 @@ pexit(const char *msg)
exit(1);
}
/* Read an 8bit value */
static int fread_8(uint8_t *buf, FILE *fd)
{
return (fread(buf, sizeof(*buf), 1, fd) == 1) ? 0 : -1;
}
/* Read a 32bit little endian value and convert to host endianness. */
static int fread_le32(uint32_t *buf, FILE *fd)
{
size_t count;
uint8_t tmp[4];
unsigned int i;
if (fread(tmp, sizeof(tmp), 1, fd) != 1)
return -1;
*buf = 0;
for (i = 0; i < ARRAY_SIZE(tmp); i++)
*buf |= (uint32_t)(tmp[i]) << (i * 8);
return 0;
}
/* Read a 64bit little endian value and convert to host endianness. */
static int fread_le64(uint64_t *buf, FILE *fd)
{
size_t count;
uint8_t tmp[8];
unsigned int i;
if (fread(tmp, sizeof(tmp), 1, fd) != 1)
return -1;
*buf = 0;
for (i = 0; i < ARRAY_SIZE(tmp); i++)
*buf |= (uint64_t)(tmp[i]) << (i * 8);
return 0;
}
/* Write an 8bit value */
static int fwrite_8(uint8_t buf, FILE *fd)
{
return (fwrite(&buf, sizeof(buf), 1, fd) == 1) ? 0 : -1;
}
/* Convert to little endian and write a 32bit value */
static int fwrite_le32(uint32_t buf, FILE *fd)
{
size_t count;
uint8_t tmp[4];
unsigned int i;
for (i = 0; i < ARRAY_SIZE(tmp); i++)
tmp[i] = buf >> (i * 8);
if (fwrite(tmp, sizeof(tmp), 1, fd) != 1)
return -1;
return 0;
}
int
main(int argc, char *argv[])
{
const char *infile, *outfile;
FILE *in, *out;
static const uint8_t buf[4096];
@ -67,7 +130,6 @@ main(int argc, char *argv[])
uint32_t datasize32 = 0;
uint32_t datacrc32 = crc32(0, 0, 0);
uint32_t zero = 0;
uint32_t entry = 0;
if (argc != 5)
@ -87,43 +149,43 @@ main(int argc, char *argv[])
pexit("fopen");
/* read LZMA header */
if (1 != fread(&properties, sizeof properties, 1, in))
if (fread_8(&properties, in))
pexit("fread");
if (1 != fread(&dictsize, sizeof dictsize, 1, in))
if (fread_le32(&dictsize, in))
pexit("fread");
if (1 != fread(&datasize, sizeof datasize, 1, in))
if (fread_le64(&datasize, in))
pexit("fread");
/* write EVA header */
if (1 != fwrite(&magic, sizeof magic, 1, out))
if (fwrite_le32(magic, out))
pexit("fwrite");
if (fgetpos(out, &reclengthpos))
pexit("fgetpos");
if (1 != fwrite(&reclength, sizeof reclength, 1, out))
if (fwrite_le32(reclength, out))
pexit("fwrite");
if (1 != fwrite(&loadaddress, sizeof loadaddress, 1, out))
if (fwrite_le32(loadaddress, out))
pexit("fwrite");
if (1 != fwrite(&type, sizeof type, 1, out))
if (fwrite_le32(type, out))
pexit("fwrite");
/* write EVA LZMA header */
if (fgetpos(out, &compsizepos))
pexit("fgetpos");
if (1 != fwrite(&compsize, sizeof compsize, 1, out))
if (fwrite_le32(compsize, out))
pexit("fwrite");
/* XXX check length */
datasize32 = (uint32_t)datasize;
if (1 != fwrite(&datasize32, sizeof datasize32, 1, out))
if (fwrite_le32(datasize32, out))
pexit("fwrite");
if (1 != fwrite(&datacrc32, sizeof datacrc32, 1, out))
if (fwrite_le32(datacrc32, out))
pexit("fwrite");
/* write modified LZMA header */
if (1 != fwrite(&properties, sizeof properties, 1, out))
if (fwrite_8(properties, out))
pexit("fwrite");
if (1 != fwrite(&dictsize, sizeof dictsize, 1, out))
if (fwrite_le32(dictsize, out))
pexit("fwrite");
if (1 != fwrite(&zero, 3, 1, out))
if (fwrite_le32(0, out))
pexit("fwrite");
/* copy compressed data, calculate crc32 */
@ -141,17 +203,17 @@ main(int argc, char *argv[])
reclength = compsize + 24;
if (fsetpos(out, &reclengthpos))
pexit("fsetpos");
if (1 != fwrite(&reclength, sizeof reclength, 1, out))
if (fwrite_le32(reclength, out))
pexit("fwrite");
/* re-write EVA LZMA header including size and data crc */
if (fsetpos(out, &compsizepos))
pexit("fsetpos");
if (1 != fwrite(&compsize, sizeof compsize, 1, out))
if (fwrite_le32(compsize, out))
pexit("fwrite");
if (1 != fwrite(&datasize32, sizeof datasize32, 1, out))
if (fwrite_le32(datasize32, out))
pexit("fwrite");
if (1 != fwrite(&datacrc32, sizeof datacrc32, 1, out))
if (fwrite_le32(datacrc32, out))
pexit("fwrite");
/* calculate record checksum */
@ -174,13 +236,13 @@ main(int argc, char *argv[])
pexit("fseek");
checksum = ~checksum + 1;
if (1 != fwrite(&checksum, sizeof checksum, 1, out))
if (fwrite_le32(checksum, out))
pexit("fwrite");
/* write entry record */
if (1 != fwrite(&zero, sizeof zero, 1, out))
if (fwrite_le32(0, out))
pexit("fwrite");
if (1 != fwrite(&entry, sizeof entry, 1, out))
if (fwrite_le32(entry, out))
pexit("fwrite");
if (fclose(out))