#include <stdlib.h>
#include <zlib.h> /* crc32 */
-
-#define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
-
#define checksum_add32(csum, data) \
- do { \
- csum += (((data) >> 0) & 0x000000FF); \
- csum += (((data) >> 8) & 0x000000FF); \
- csum += (((data) >> 16) & 0x000000FF); \
- csum += (((data) >> 24) & 0x000000FF); \
- } while (0)
+ csum += ((uint8_t *)&data)[0]; \
+ csum += ((uint8_t *)&data)[1]; \
+ csum += ((uint8_t *)&data)[2]; \
+ csum += ((uint8_t *)&data)[3];
void
usage(void)
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];
uint32_t datasize32 = 0;
uint32_t datacrc32 = crc32(0, 0, 0);
+ uint32_t zero = 0;
uint32_t entry = 0;
if (argc != 5)
pexit("fopen");
/* read LZMA header */
- if (fread_8(&properties, in))
+ if (1 != fread(&properties, sizeof properties, 1, in))
pexit("fread");
- if (fread_le32(&dictsize, in))
+ if (1 != fread(&dictsize, sizeof dictsize, 1, in))
pexit("fread");
- if (fread_le64(&datasize, in))
+ if (1 != fread(&datasize, sizeof datasize, 1, in))
pexit("fread");
/* write EVA header */
- if (fwrite_le32(magic, out))
+ if (1 != fwrite(&magic, sizeof magic, 1, out))
pexit("fwrite");
if (fgetpos(out, &reclengthpos))
pexit("fgetpos");
- if (fwrite_le32(reclength, out))
+ if (1 != fwrite(&reclength, sizeof reclength, 1, out))
pexit("fwrite");
- if (fwrite_le32(loadaddress, out))
+ if (1 != fwrite(&loadaddress, sizeof loadaddress, 1, out))
pexit("fwrite");
- if (fwrite_le32(type, out))
+ if (1 != fwrite(&type, sizeof type, 1, out))
pexit("fwrite");
/* write EVA LZMA header */
if (fgetpos(out, &compsizepos))
pexit("fgetpos");
- if (fwrite_le32(compsize, out))
+ if (1 != fwrite(&compsize, sizeof compsize, 1, out))
pexit("fwrite");
/* XXX check length */
datasize32 = (uint32_t)datasize;
- if (fwrite_le32(datasize32, out))
+ if (1 != fwrite(&datasize32, sizeof datasize32, 1, out))
pexit("fwrite");
- if (fwrite_le32(datacrc32, out))
+ if (1 != fwrite(&datacrc32, sizeof datacrc32, 1, out))
pexit("fwrite");
/* write modified LZMA header */
- if (fwrite_8(properties, out))
+ if (1 != fwrite(&properties, sizeof properties, 1, out))
pexit("fwrite");
- if (fwrite_le32(dictsize, out))
+ if (1 != fwrite(&dictsize, sizeof dictsize, 1, out))
pexit("fwrite");
- if (fwrite_le32(0, out))
+ if (1 != fwrite(&zero, 3, 1, out))
pexit("fwrite");
/* copy compressed data, calculate crc32 */
reclength = compsize + 24;
if (fsetpos(out, &reclengthpos))
pexit("fsetpos");
- if (fwrite_le32(reclength, out))
+ if (1 != fwrite(&reclength, sizeof reclength, 1, out))
pexit("fwrite");
/* re-write EVA LZMA header including size and data crc */
if (fsetpos(out, &compsizepos))
pexit("fsetpos");
- if (fwrite_le32(compsize, out))
+ if (1 != fwrite(&compsize, sizeof compsize, 1, out))
pexit("fwrite");
- if (fwrite_le32(datasize32, out))
+ if (1 != fwrite(&datasize32, sizeof datasize32, 1, out))
pexit("fwrite");
- if (fwrite_le32(datacrc32, out))
+ if (1 != fwrite(&datacrc32, sizeof datacrc32, 1, out))
pexit("fwrite");
/* calculate record checksum */
pexit("fseek");
checksum = ~checksum + 1;
- if (fwrite_le32(checksum, out))
+ if (1 != fwrite(&checksum, sizeof checksum, 1, out))
pexit("fwrite");
/* write entry record */
- if (fwrite_le32(0, out))
+ if (1 != fwrite(&zero, sizeof zero, 1, out))
pexit("fwrite");
- if (fwrite_le32(entry, out))
+ if (1 != fwrite(&entry, sizeof entry, 1, out))
pexit("fwrite");
if (fclose(out))