sys/dev/microcode/tools/bin2blob.c

   1 /*      $NetBSD: main.c,v 1.3 2008/04/28 20:23:09 martin Exp $  */
   2
   3 /*-
   4  * Copyright (c) 2008 The NetBSD Foundation, Inc.
   5  * All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  *
  16  * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
  17  * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
  18  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  19  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
  20  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  21  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  22  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  23  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  24  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  25  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  26  * POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 /*
  30  * Reads data from stdin (must be a regular file so we can do stat()), and
  31  * outputs a 32-bit array of format:
  32  *
  33  * [0]  signature: BLOB
  34  * [1]  original, uncompressed length
  35  * [2]  length of compressed data that follows, unpadded
  36  * [n]  zlib compressed data, padded to 4 bytes
  37  */
  38
  39 #include <sys/cdefs.h>
  40 #ifndef lint
  41 __RCSID("$NetBSD: main.c,v 1.3 2008/04/28 20:23:09 martin Exp $");
  42 #endif /* !lint */
  43
  44 #include <sys/module.h>
  45 #include <sys/stat.h>
  46
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <unistd.h>
  50 #include <string.h>
  51 #include <err.h>
  52 #include <zlib.h>
  53
  54 int     main(int, char **);
  55
  56 #define SIG     0x424c4f42
  57
  58 void
  59 put(uint32_t val)
  60 {
  61         static int n;
  62
  63         switch (n) {
  64         case 6:
  65                 putc('\n', stdout);
  66                 n = 0;
  67                 /* FALLTHROUGH */
  68         case 0:
  69                 putc('\t', stdout);
  70                 break;
  71         }
  72         printf("0x%08x,", val);
  73         n++;
  74 }
  75
  76 int
  77 main(int argc, char **argv)
  78 {
  79         struct stat sb;
  80         uint8_t *src, *dst;
  81         u_long slen, dlen;
  82         uint32_t *dp;
  83
  84         if (fstat(STDIN_FILENO, &sb) < 0)
  85                 err(1, "stat(stdin)");
  86
  87         src = malloc(sb.st_size);
  88         dlen = sb.st_size * 1002 / 1000 + 12 + 3 + 4*2;
  89         dst = malloc(dlen);
  90         if (src == NULL || dst == NULL)
  91                 errx(1, "malloc");
  92
  93         if (read(STDIN_FILENO, src, sb.st_size) != sb.st_size)
  94                 errx(1, "read");
  95
  96         slen = sb.st_size;
  97         memset(dst, 0, dlen);
  98         if (compress2(dst, &dlen, src, slen, 9) != Z_OK)
  99                 errx(1, "compress2");
 100
 101         printf("static const uint32_t blob[] = {\n");
 102         put(SIG);
 103         put(slen);
 104         put(dlen);
 105         dlen = ((dlen + 3) & ~3) >> 2;
 106         dp = (uint32_t *)dst;
 107         while (dlen--)
 108                 put(*dp++);
 109         printf("\n};\n");
 110
 111         exit(EXIT_SUCCESS);
 112 }