freebsd-skq/usr.sbin/ndiscvt/ndiscvt.c
wpaul 2bf0bec3d5 Fix a small bug in firmcvt: outfile must be strdup()ed.
Also, add conditional code to allow different invokations for objcopy
depending on whether we're compiled on an i386 arch or amd64 arch, so
that we can produce x86-64 object files on amd64.
2005-02-19 07:37:01 +00:00

433 lines
11 KiB
C

/*
* Copyright (c) 2003
* Bill Paul <wpaul@windriver.com>. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Bill Paul.
* 4. Neither the name of the author nor the names of any co-contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY Bill Paul AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL Bill Paul OR THE VOICES IN HIS HEAD
* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
* THE POSSIBILITY OF SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/socket.h>
#include <net/if.h>
#include <stdlib.h>
#include <unistd.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <libgen.h>
#include <err.h>
#include <ctype.h>
#include <compat/ndis/pe_var.h>
#include "inf.h"
static int insert_padding(void **, int *);
extern const char *__progname;
/*
* Sections within Windows PE files are defined using virtual
* and physical address offsets and virtual and physical sizes.
* The physical values define how the section data is stored in
* the executable file while the virtual values describe how the
* sections will look once loaded into memory. It happens that
* the linker in the Microsoft(r) DDK will tend to generate
* binaries where the virtual and physical values are identical,
* which means in most cases we can just transfer the file
* directly to memory without any fixups. This is not always
* the case though, so we have to be prepared to handle files
* where the in-memory section layout differs from the disk file
* section layout.
*
* There are two kinds of variations that can occur: the relative
* virtual address of the section might be different from the
* physical file offset, and the virtual section size might be
* different from the physical size (for example, the physical
* size of the .data section might be 1024 bytes, but the virtual
* size might be 1384 bytes, indicating that the data section should
* actually use up 1384 bytes in RAM and be padded with zeros). What we
* do is read the original file into memory and then make an in-memory
* copy with all of the sections relocated, re-sized and zero padded
* according to the virtual values specified in the section headers.
* We then emit the fixed up image file for use by the if_ndis driver.
* This way, we don't have to do the fixups inside the kernel.
*/
#define ROUND_DOWN(n, align) (((uintptr_t)n) & ~((align) - 1l))
#define ROUND_UP(n, align) ROUND_DOWN(((uintptr_t)n) + (align) - 1l, \
(align))
#define SET_HDRS(x) \
dos_hdr = (image_dos_header *)x; \
nt_hdr = (image_nt_header *)(x + dos_hdr->idh_lfanew); \
sect_hdr = (image_section_header *)((vm_offset_t)nt_hdr + \
sizeof(image_nt_header));
static
int insert_padding(imgbase, imglen)
void **imgbase;
int *imglen;
{
image_section_header *sect_hdr;
image_dos_header *dos_hdr;
image_nt_header *nt_hdr;
image_optional_header opt_hdr;
int i = 0, sections, curlen = 0;
int offaccum = 0, oldraddr, oldrlen;
uint8_t *newimg, *tmp;
newimg = malloc(*imglen);
if (newimg == NULL)
return(ENOMEM);
bcopy(*imgbase, newimg, *imglen);
curlen = *imglen;
if (pe_get_optional_header((vm_offset_t)newimg, &opt_hdr))
return(0);
sections = pe_numsections((vm_offset_t)newimg);
SET_HDRS(newimg);
for (i = 0; i < sections; i++) {
oldraddr = sect_hdr->ish_rawdataaddr;
oldrlen = sect_hdr->ish_rawdatasize;
sect_hdr->ish_rawdataaddr = sect_hdr->ish_vaddr;
offaccum += ROUND_UP(sect_hdr->ish_vaddr - oldraddr,
opt_hdr.ioh_filealign);
offaccum +=
ROUND_UP(sect_hdr->ish_misc.ish_vsize,
opt_hdr.ioh_filealign) -
ROUND_UP(sect_hdr->ish_rawdatasize,
opt_hdr.ioh_filealign);
tmp = realloc(newimg, *imglen + offaccum);
if (tmp == NULL) {
free(newimg);
return(ENOMEM);
}
newimg = tmp;
SET_HDRS(newimg);
sect_hdr += i;
bzero(newimg + sect_hdr->ish_rawdataaddr,
ROUND_UP(sect_hdr->ish_misc.ish_vsize,
opt_hdr.ioh_filealign));
bcopy((uint8_t *)(*imgbase) + oldraddr,
newimg + sect_hdr->ish_rawdataaddr, oldrlen);
sect_hdr++;
}
free(*imgbase);
*imgbase = newimg;
*imglen += offaccum;
return(0);
}
static void
usage(void)
{
fprintf(stderr, "Usage: %s [-O] [-i <inffile>] -s <sysfile> "
"[-n devname] [-o outfile]\n", __progname);
fprintf(stderr, " %s -f <firmfile>\n", __progname);
exit(1);
}
static void
bincvt(char *sysfile, char *outfile, void *img, int fsize)
{
char *ptr;
char tname[] = "/tmp/ndiscvt.XXXXXX";
char sysbuf[1024];
FILE *binfp;
mkstemp(tname);
binfp = fopen(tname, "a+");
if (binfp == NULL)
err(1, "opening %s failed", tname);
if (fwrite(img, fsize, 1, binfp) != 1)
err(1, "failed to output binary image");
fclose(binfp);
outfile = strdup(basename(outfile));
if (strchr(outfile, '.'))
*strchr(outfile, '.') = '\0';
snprintf(sysbuf, sizeof(sysbuf),
#ifdef __i386__
"objcopy -I binary -O elf32-i386-freebsd -B i386 %s %s.o\n",
#endif
#ifdef __amd64__
"objcopy -I binary -O elf64-x86-64 -B i386 %s %s.o\n",
#endif
tname, outfile);
printf("%s", sysbuf);
system(sysbuf);
unlink(tname);
ptr = tname;
while (*ptr) {
if (*ptr == '/' || *ptr == '.')
*ptr = '_';
ptr++;
}
snprintf(sysbuf, sizeof(sysbuf),
"objcopy --redefine-sym _binary_%s_start=%s_drv_data_start "
"--strip-symbol _binary_%s_size "
"--redefine-sym _binary_%s_end=%s_drv_data_end %s.o %s.o\n",
tname, sysfile, tname, tname, sysfile, outfile, outfile);
printf("%s", sysbuf);
system(sysbuf);
return;
}
static void
firmcvt(char *firmfile)
{
char *basefile, *outfile, *ptr;
char sysbuf[1024];
outfile = strdup(basename(firmfile));
basefile = strdup(outfile);
snprintf(sysbuf, sizeof(sysbuf),
#ifdef __i386__
"objcopy -I binary -O elf32-i386-freebsd -B i386 %s %s.o\n",
#endif
#ifdef __amd64__
"objcopy -I binary -O elf64-x86-64 -B i386 %s %s.o\n",
#endif
firmfile, outfile);
printf("%s", sysbuf);
system(sysbuf);
ptr = firmfile;
while (*ptr) {
if (*ptr == '/' || *ptr == '.')
*ptr = '_';
ptr++;
}
ptr = basefile;
while (*ptr) {
if (*ptr == '/' || *ptr == '.')
*ptr = '_';
else
*ptr = tolower(*ptr);
ptr++;
}
snprintf(sysbuf, sizeof(sysbuf),
"objcopy --redefine-sym _binary_%s_start=%s_start "
"--strip-symbol _binary_%s_size "
"--redefine-sym _binary_%s_end=%s_end %s.o %s.o\n",
firmfile, basefile, firmfile, firmfile,
basefile, outfile, outfile);
ptr = sysbuf;
printf("%s", sysbuf);
system(sysbuf);
snprintf(sysbuf, sizeof(sysbuf),
"ld -Bshareable -d -warn-common -o %s.ko %s.o\n",
outfile, outfile);
printf("%s", sysbuf);
system(sysbuf);
free(basefile);
exit(0);
}
int
main(int argc, char *argv[])
{
FILE *fp, *outfp;
int i, bin = 0;
void *img;
int n, fsize, cnt;
unsigned char *ptr;
char *inffile = NULL, *sysfile = NULL;
char *outfile = NULL, *firmfile = NULL;
char *dname = NULL;
int ch;
while((ch = getopt(argc, argv, "i:s:o:n:f:O")) != -1) {
switch(ch) {
case 'f':
firmfile = optarg;
break;
case 'i':
inffile = optarg;
break;
case 's':
sysfile = optarg;
break;
case 'o':
outfile = optarg;
break;
case 'n':
dname = optarg;
break;
case 'O':
bin = 1;
break;
default:
usage();
break;
}
}
if (firmfile != NULL)
firmcvt(firmfile);
if (sysfile == NULL)
usage();
/* Open the .SYS file and load it into memory */
fp = fopen(sysfile, "r");
if (fp == NULL)
err(1, "opening .SYS file '%s' failed", sysfile);
fseek (fp, 0L, SEEK_END);
fsize = ftell (fp);
rewind (fp);
img = calloc(fsize, 1);
n = fread (img, fsize, 1, fp);
fclose(fp);
if (insert_padding(&img, &fsize)) {
fprintf(stderr, "section relocation failed\n");
exit(1);
}
if (outfile == NULL || strcmp(outfile, "-") == 0)
outfp = stdout;
else {
outfp = fopen(outfile, "w");
if (outfp == NULL)
err(1, "opening output file '%s' failed", outfile);
}
fprintf(outfp, "\n/*\n");
fprintf(outfp, " * Generated from %s and %s (%d bytes)\n",
inffile == NULL ? "<notused>" : inffile, sysfile, fsize);
fprintf(outfp, " */\n\n");
if (dname != NULL) {
if (strlen(dname) > IFNAMSIZ)
err(1, "selected device name '%s' is "
"too long (max chars: %d)", dname, IFNAMSIZ);
fprintf (outfp, "#define NDIS_DEVNAME \"%s\"\n", dname);
fprintf (outfp, "#define NDIS_MODNAME %s\n\n", dname);
}
if (inffile == NULL) {
fprintf (outfp, "#ifdef NDIS_REGVALS\n");
fprintf (outfp, "ndis_cfg ndis_regvals[] = {\n");
fprintf (outfp, "\t{ NULL, NULL, { 0 }, 0 }\n");
fprintf (outfp, "#endif /* NDIS_REGVALS */\n");
fprintf (outfp, "};\n\n");
} else {
fp = fopen(inffile, "r");
if (fp == NULL)
err(1, "opening .INF file '%s' failed", inffile);
inf_parse(fp, outfp);
fclose(fp);
}
fprintf(outfp, "\n#ifdef NDIS_IMAGE\n");
if (bin) {
sysfile = strdup(basename(sysfile));
ptr = sysfile;
while (*ptr) {
if (*ptr == '.')
*ptr = '_';
ptr++;
}
fprintf(outfp,
"\nextern unsigned char %s_drv_data_start[];\n",
sysfile);
fprintf(outfp, "static unsigned char *drv_data = "
"%s_drv_data_start;\n\n", sysfile);
bincvt(sysfile, outfile, img, fsize);
goto done;
}
fprintf(outfp, "\nextern unsigned char drv_data[];\n\n");
fprintf(outfp, "__asm__(\".data\");\n");
fprintf(outfp, "__asm__(\".globl drv_data\");\n");
fprintf(outfp, "__asm__(\".type drv_data, @object\");\n");
fprintf(outfp, "__asm__(\".size drv_data, %d\");\n", fsize);
fprintf(outfp, "__asm__(\"drv_data:\");\n");
ptr = img;
cnt = 0;
while(cnt < fsize) {
fprintf (outfp, "__asm__(\".byte ");
for (i = 0; i < 10; i++) {
cnt++;
if (cnt == fsize) {
fprintf(outfp, "0x%.2X\");\n", ptr[i]);
goto done;
} else {
if (i == 9)
fprintf(outfp, "0x%.2X\");\n", ptr[i]);
else
fprintf(outfp, "0x%.2X, ", ptr[i]);
}
}
ptr += 10;
}
done:
fprintf(outfp, "#endif /* NDIS_IMAGE */\n");
if (fp != NULL)
fclose(fp);
fclose(outfp);
free(img);
exit(0);
}