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[openwrt/svn-archive/archive.git] / obsolete-buildroot / sources / openwrt / tools / trx.c

diff --git a/obsolete-buildroot/sources/openwrt/tools/trx.c b/obsolete-buildroot/sources/openwrt/tools/trx.c
index 5ec53fdcb3f7acd43afc1a25753cc3a1a6fa1f69..f029dc5fba0ae59651513a312ef28b98218771c9 100644 (file)
--- a/obsolete-buildroot/sources/openwrt/tools/trx.c
+++ b/obsolete-buildroot/sources/openwrt/tools/trx.c
@@ -26,6 +26,10 @@
  * .trx file using '-m'.  It will be rounded up to be a multiple of 4K.
  * NOTE: This space will be malloc()'d.
  *
+ * August 16, 2004
+ *
+ * Sigh... Make it endian-neutral.
+ *
  * TODO: Support '-b' option to specify offsets for each file.
  */
 
@@ -36,6 +40,16 @@
 #include <string.h>
 #include <errno.h>
 #include <unistd.h>
+#include <endian.h>
+#include <byteswap.h>
+
+#if __BYTE_ORDER == __BIG_ENDIAN
+#define STORE32_LE(X)          bswap_32(X)
+#elif __BYTE_ORDER == __LITTLE_ENDIAN
+#define STORE32_LE(X)          (X)
+#else
+#error unkown endianness!
+#endif
 
 uint32_t crc32buf(char *buf, size_t len);
 
@@ -74,10 +88,11 @@ int main(int argc, char **argv)
        char *e;
        int c, i;
        size_t n;
+       uint32_t cur_len;
        unsigned long maxlen = TRX_MAX_LEN;
        struct trx_header *p;
 
-       fprintf(stderr, "mjn3's trx replacement - v0.80\n");
+       fprintf(stderr, "mjn3's trx replacement - v0.81\n");
 
        while ((c = getopt(argc, argv, "o:m:")) != -1) {
                switch (c) {
@@ -132,21 +147,21 @@ int main(int argc, char **argv)
 
        p = (struct trx_header *) buf;
 
-       p->magic = TRX_MAGIC;
-       p->len = sizeof(struct trx_header);
-       p->flag_version = (TRX_VERSION << 16);
+       p->magic = STORE32_LE(TRX_MAGIC);
+       cur_len = sizeof(struct trx_header);
+       p->flag_version = STORE32_LE((TRX_VERSION << 16));
 
        i = 0;
 
        while (optind < argc) {
-               p->offsets[i++] = p->len;
+               p->offsets[i++] = STORE32_LE(cur_len);
 
                if (!(in = fopen(argv[optind], "r"))) {
                        fprintf(stderr, "can not open \"%s\" for reading\n", argv[optind]);
                        usage();
                }
 
-               n = fread(buf + p->len, 1, maxlen - p->len, in);
+               n = fread(buf + cur_len, 1, maxlen - cur_len, in);
                if (!feof(in)) {
                        fprintf(stderr, "fread failure or file \"%s\" too large\n",
                                        argv[optind]);
@@ -162,26 +177,29 @@ int main(int argc, char **argv)
 #undef  ROUND
 #define ROUND 4
                        if (n & (ROUND-1)) {
-                               memset(buf + p->len + n, 0, ROUND - (n & (ROUND-1)));
+                               memset(buf + cur_len + n, 0, ROUND - (n & (ROUND-1)));
                                n += ROUND - (n & (ROUND-1));
                        }
                }
 
-               p->len += n;
+               cur_len += n;
        }
 
 #undef  ROUND
 #define ROUND 0x1000
-       n = p->len & (ROUND-1);
+       n = cur_len & (ROUND-1);
        if (n) {
-               memset(buf + p->len, 0, ROUND - n);
-               p->len += ROUND - n;
+               memset(buf + cur_len, 0, ROUND - n);
+               cur_len += ROUND - n;
        }
 
        p->crc32 = crc32buf((char *) &p->flag_version,
-                                               p->len - offsetof(struct trx_header, flag_version));
+                                               cur_len - offsetof(struct trx_header, flag_version));
+       p->crc32 = STORE32_LE(p->crc32);
+
+       p->len = STORE32_LE(cur_len);
 
-       if (!fwrite(buf, p->len, 1, out) || fflush(out)) {
+       if (!fwrite(buf, cur_len, 1, out) || fflush(out)) {
                fprintf(stderr, "fwrite failed\n");
                return EXIT_FAILURE;
        }