3 * Bill Paul <wpaul@windriver.com>. All rights reserved.
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. All advertising materials mentioning features or use of this software
14 * must display the following acknowledgement:
15 * This product includes software developed by Bill Paul.
16 * 4. Neither the name of the author nor the names of any co-contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
30 * THE POSSIBILITY OF SUCH DAMAGE.
32 * $FreeBSD: src/usr.sbin/ndiscvt/ndiscvt.c,v 1.16 2011/02/18 20:54:12 dim Exp $
35 #include <sys/types.h>
36 #include <sys/queue.h>
37 #include <sys/socket.h>
49 #include <emulation/ndis/pe_var.h>
53 static int insert_padding(void **, int *);
54 extern const char *__progname;
57 * Sections within Windows PE files are defined using virtual
58 * and physical address offsets and virtual and physical sizes.
59 * The physical values define how the section data is stored in
60 * the executable file while the virtual values describe how the
61 * sections will look once loaded into memory. It happens that
62 * the linker in the Microsoft(r) DDK will tend to generate
63 * binaries where the virtual and physical values are identical,
64 * which means in most cases we can just transfer the file
65 * directly to memory without any fixups. This is not always
66 * the case though, so we have to be prepared to handle files
67 * where the in-memory section layout differs from the disk file
70 * There are two kinds of variations that can occur: the relative
71 * virtual address of the section might be different from the
72 * physical file offset, and the virtual section size might be
73 * different from the physical size (for example, the physical
74 * size of the .data section might be 1024 bytes, but the virtual
75 * size might be 1384 bytes, indicating that the data section should
76 * actually use up 1384 bytes in RAM and be padded with zeros). What we
77 * do is read the original file into memory and then make an in-memory
78 * copy with all of the sections relocated, re-sized and zero padded
79 * according to the virtual values specified in the section headers.
80 * We then emit the fixed up image file for use by the if_ndis driver.
81 * This way, we don't have to do the fixups inside the kernel.
84 #define ROUND_DOWN(n, align) (((uintptr_t)n) & ~((align) - 1l))
85 #define ROUND_UP(n, align) ROUND_DOWN(((uintptr_t)n) + (align) - 1l, \
89 dos_hdr = (image_dos_header *)x; \
90 nt_hdr = (image_nt_header *)(x + dos_hdr->idh_lfanew); \
91 sect_hdr = IMAGE_FIRST_SECTION(nt_hdr);
94 insert_padding(void **imgbase, int *imglen)
96 image_section_header *sect_hdr;
97 image_dos_header *dos_hdr;
98 image_nt_header *nt_hdr;
99 image_optional_header opt_hdr;
100 int i = 0, sections, curlen = 0;
101 int offaccum = 0, oldraddr, oldrlen;
102 uint8_t *newimg, *tmp;
104 newimg = malloc(*imglen);
109 bcopy(*imgbase, newimg, *imglen);
112 if (pe_get_optional_header((vm_offset_t)newimg, &opt_hdr))
115 sections = pe_numsections((vm_offset_t)newimg);
119 for (i = 0; i < sections; i++) {
120 oldraddr = sect_hdr->ish_rawdataaddr;
121 oldrlen = sect_hdr->ish_rawdatasize;
122 sect_hdr->ish_rawdataaddr = sect_hdr->ish_vaddr;
123 offaccum += ROUND_UP(sect_hdr->ish_vaddr - oldraddr,
124 opt_hdr.ioh_filealign);
126 ROUND_UP(sect_hdr->ish_misc.ish_vsize,
127 opt_hdr.ioh_filealign) -
128 ROUND_UP(sect_hdr->ish_rawdatasize,
129 opt_hdr.ioh_filealign);
130 tmp = realloc(newimg, *imglen + offaccum);
138 bzero(newimg + sect_hdr->ish_rawdataaddr,
139 ROUND_UP(sect_hdr->ish_misc.ish_vsize,
140 opt_hdr.ioh_filealign));
141 bcopy((uint8_t *)(*imgbase) + oldraddr,
142 newimg + sect_hdr->ish_rawdataaddr, oldrlen);
157 fprintf(stderr, "Usage: %s [-O] [-i <inffile>] -s <sysfile> "
158 "[-n devname] [-o outfile]\n", __progname);
159 fprintf(stderr, " %s -f <firmfile>\n", __progname);
165 bincvt(char *sysfile, char *outfile, void *img, int fsize)
168 char tname[] = "/tmp/ndiscvt.XXXXXX";
174 binfp = fopen(tname, "a+");
176 err(1, "opening %s failed", tname);
178 if (fwrite(img, fsize, 1, binfp) != 1)
179 err(1, "failed to output binary image");
183 outfile = strdup(basename(outfile));
184 if (strchr(outfile, '.'))
185 *strchr(outfile, '.') = '\0';
187 snprintf(sysbuf, sizeof(sysbuf),
189 "objcopy -I binary -O elf32-i386 -B i386 %s %s.o\n",
192 "objcopy -I binary -O elf64-x86-64 -B i386 %s %s.o\n",
195 printf("%s", sysbuf);
201 if (*ptr == '/' || *ptr == '.')
206 snprintf(sysbuf, sizeof(sysbuf),
207 "objcopy --redefine-sym _binary_%s_start=ndis_%s_drv_data_start "
208 "--strip-symbol _binary_%s_size "
209 "--redefine-sym _binary_%s_end=ndis_%s_drv_data_end %s.o %s.o\n",
210 tname, sysfile, tname, tname, sysfile, outfile, outfile);
211 printf("%s", sysbuf);
218 firmcvt(char *firmfile)
220 char *basefile, *outfile, *ptr;
223 outfile = strdup(basename(firmfile));
224 basefile = strdup(outfile);
226 snprintf(sysbuf, sizeof(sysbuf),
228 "objcopy -I binary -O elf32-i386 -B i386 %s %s.o\n",
231 "objcopy -I binary -O elf64-x86-64 -B i386 %s %s.o\n",
234 printf("%s", sysbuf);
239 if (*ptr == '/' || *ptr == '.')
245 if (*ptr == '/' || *ptr == '.')
248 *ptr = tolower(*ptr);
252 snprintf(sysbuf, sizeof(sysbuf),
253 "objcopy --redefine-sym _binary_%s_start=%s_start "
254 "--strip-symbol _binary_%s_size "
255 "--redefine-sym _binary_%s_end=%s_end %s.o %s.o\n",
256 firmfile, basefile, firmfile, firmfile,
257 basefile, outfile, outfile);
259 printf("%s", sysbuf);
262 snprintf(sysbuf, sizeof(sysbuf),
263 "ld -Bshareable -d -warn-common -o %s.ko %s.o\n",
265 printf("%s", sysbuf);
274 main(int argc, char *argv[])
281 char *inffile = NULL, *sysfile = NULL;
282 char *outfile = NULL, *firmfile = NULL;
286 while((ch = getopt(argc, argv, "i:s:o:n:f:O")) != -1) {
312 if (firmfile != NULL)
318 /* Open the .SYS file and load it into memory */
319 fp = fopen(sysfile, "r");
321 err(1, "opening .SYS file '%s' failed", sysfile);
322 fseek (fp, 0L, SEEK_END);
325 img = calloc(fsize, 1);
326 n = fread (img, fsize, 1, fp);
330 if (insert_padding(&img, &fsize)) {
331 fprintf(stderr, "section relocation failed\n");
335 if (outfile == NULL || strcmp(outfile, "-") == 0)
338 outfp = fopen(outfile, "w");
340 err(1, "opening output file '%s' failed", outfile);
343 fprintf(outfp, "\n/*\n");
344 fprintf(outfp, " * Generated from %s and %s (%d bytes)\n",
345 inffile == NULL ? "<notused>" : inffile, sysfile, fsize);
346 fprintf(outfp, " */\n\n");
349 if (strlen(dname) > IFNAMSIZ)
350 err(1, "selected device name '%s' is "
351 "too long (max chars: %d)", dname, IFNAMSIZ);
352 fprintf (outfp, "#define NDIS_DEVNAME \"%s\"\n", dname);
353 fprintf (outfp, "#define NDIS_MODNAME %s\n\n", dname);
356 if (inffile == NULL) {
357 fprintf (outfp, "#ifdef NDIS_REGVALS\n");
358 fprintf (outfp, "ndis_cfg ndis_regvals[] = {\n");
359 fprintf (outfp, "\t{ NULL, NULL, { 0 }, 0 }\n");
360 fprintf (outfp, "#endif /* NDIS_REGVALS */\n");
362 fprintf (outfp, "};\n\n");
364 fp = fopen(inffile, "r");
366 err(1, "opening .INF file '%s' failed", inffile);
369 inf_parse(fp, outfp);
373 fprintf(outfp, "\n#ifdef NDIS_IMAGE\n");
376 sysfile = strdup(basename(sysfile));
377 ptr = (unsigned char *)sysfile;
384 "\nextern unsigned char ndis_%s_drv_data_start[];\n",
386 fprintf(outfp, "static unsigned char *drv_data = "
387 "ndis_%s_drv_data_start;\n\n", sysfile);
388 bincvt(sysfile, outfile, img, fsize);
393 fprintf(outfp, "\nextern unsigned char drv_data[];\n\n");
395 fprintf(outfp, "__asm__(\".data\");\n");
396 fprintf(outfp, "__asm__(\".globl drv_data\");\n");
397 fprintf(outfp, "__asm__(\".type drv_data, @object\");\n");
398 fprintf(outfp, "__asm__(\".size drv_data, %d\");\n", fsize);
399 fprintf(outfp, "__asm__(\"drv_data:\");\n");
404 fprintf (outfp, "__asm__(\".byte ");
405 for (i = 0; i < 10; i++) {
408 fprintf(outfp, "0x%.2X\");\n", ptr[i]);
412 fprintf(outfp, "0x%.2X\");\n", ptr[i]);
414 fprintf(outfp, "0x%.2X, ", ptr[i]);
422 fprintf(outfp, "#endif /* NDIS_IMAGE */\n");