freebsd-dev/stand/usb/tools/sysinit.c
2017-11-14 23:02:19 +00:00

332 lines
7.8 KiB
C

/* $FreeBSD$ */
/*-
* Copyright (c) 2013 Hans Petter Selasky. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 THE AUTHOR OR CONTRIBUTORS 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.
*/
/*
* This utility sorts sysinit structure entries in binary format and
* prints out the result in C-format.
*/
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <err.h>
#include <unistd.h>
#include <fcntl.h>
#include <string.h>
#include <sysexits.h>
#include "sysinit.h"
static int opt_R;
static const char *input_f;
static const char *output_f;
static const char *struct_name;
static const char *keyword;
static struct sysinit_data **start;
static struct sysinit_data **stop;
static int input_file = -1;
static int output_file = -1;
static uint8_t *input_ptr;
static uint32_t input_len;
static uint32_t endian32;
static char scratch_buf[4096];
static int success;
static void do_sysinit(void);
/* the following function converts the numbers into host endian format */
static uint32_t
read32(uint32_t val)
{
uint32_t temp;
uint32_t endian;
endian = endian32;
temp = 0;
while (val) {
temp |= (val & 0xF) << ((endian & 0xF) * 4);
endian >>= 4;
val >>= 4;
}
return (temp);
}
static void
do_write(int fd, const char *buf)
{
int len = strlen(buf);
if (write(fd, buf, len) != len)
err(EX_SOFTWARE, "Could not write to output file");
}
static void *
do_malloc(int size)
{
void *ptr;
ptr = malloc(size);
if (ptr == NULL)
errx(EX_SOFTWARE, "Could not allocate memory");
return (ptr);
}
static void
usage(void)
{
errx(EX_USAGE, "sysinit -i sysinit.bin -o sysinit_data.c \\\n"
"\t" "-k sysinit -s sysinit_data [ -R (reverse)]");
}
static void
cleanup(void)
{
if (output_file >= 0)
close(output_file);
if (input_file >= 0)
close(input_file);
if (success == 0) {
if (output_f)
unlink(output_f);
}
}
static int
compare(const void *_pa, const void *_pb)
{
const struct sysinit_data * const *pa = _pa;
const struct sysinit_data * const *pb = _pb;
if ((*pa)->dw_msb_value > (*pb)->dw_msb_value)
return (1);
if ((*pa)->dw_msb_value < (*pb)->dw_msb_value)
return (-1);
if ((*pa)->dw_lsb_value > (*pb)->dw_lsb_value)
return (1);
if ((*pa)->dw_lsb_value < (*pb)->dw_lsb_value)
return (-1);
return (0); /* equal */
}
static int
compare_R(const void *_pa, const void *_pb)
{
const struct sysinit_data * const *pa = _pa;
const struct sysinit_data * const *pb = _pb;
if ((*pa)->dw_msb_value > (*pb)->dw_msb_value)
return (-1);
if ((*pa)->dw_msb_value < (*pb)->dw_msb_value)
return (1);
if ((*pa)->dw_lsb_value > (*pb)->dw_lsb_value)
return (-1);
if ((*pa)->dw_lsb_value < (*pb)->dw_lsb_value)
return (1);
return (0); /* equal */
}
int
main(int argc, char **argv)
{
struct sysinit_data **sipp;
int c;
int entries;
off_t off;
while ((c = getopt(argc, argv, "k:s:i:o:Rh")) != -1) {
switch (c) {
case 'i':
input_f = optarg;
break;
case 'o':
output_f = optarg;
break;
case 'R':
opt_R = 1;
break;
case 'k':
keyword = optarg;
break;
case 's':
struct_name = optarg;
break;
default:
usage();
}
}
if (input_f == NULL || output_f == NULL ||
struct_name == NULL || keyword == NULL)
usage();
atexit(&cleanup);
cleanup();
input_file = open(input_f, O_RDONLY);
if (input_file < 0)
err(EX_SOFTWARE, "Could not open input file: %s", input_f);
output_file = open(output_f, O_TRUNC | O_CREAT | O_RDWR, 0600);
if (output_file < 0)
err(EX_SOFTWARE, "Could not open output file: %s", output_f);
off = lseek(input_file, 0, SEEK_END);
input_ptr = do_malloc(off);
input_len = off;
if (input_len % (uint32_t)sizeof(struct sysinit_data)) {
errx(EX_SOFTWARE, "Input file size is not divisible by %u",
(unsigned int)sizeof(struct sysinit_data));
}
off = lseek(input_file, 0, SEEK_SET);
if (off < 0)
err(EX_SOFTWARE, "Could not seek to start of input file");
if (read(input_file, input_ptr, input_len) != input_len)
err(EX_SOFTWARE, "Could not read input file");
entries = input_len / (uint32_t)sizeof(struct sysinit_data);
start = do_malloc(sizeof(void *) * entries);
stop = start + entries;
for (c = 0; c != entries; c++)
start[c] = &((struct sysinit_data *)input_ptr)[c];
if (start != stop)
endian32 = (*start)->dw_endian32;
/* switch all fields to host endian order */
for (sipp = start; sipp < stop; sipp++) {
(*sipp)->dw_lsb_value = read32((*sipp)->dw_lsb_value);
(*sipp)->dw_msb_value = read32((*sipp)->dw_msb_value);
(*sipp)->dw_file_line = read32((*sipp)->dw_file_line);
}
if (opt_R == 0) {
/* sort entries, rising numerical order */
qsort(start, entries, sizeof(void *), &compare);
} else {
/* sort entries, falling numerical order */
qsort(start, entries, sizeof(void *), &compare_R);
}
/* safe all strings */
for (sipp = start; sipp < stop; sipp++) {
(*sipp)->b_keyword_name[sizeof((*sipp)->b_keyword_name) - 1] = 0;
(*sipp)->b_global_type[sizeof((*sipp)->b_global_type) - 1] = 0;
(*sipp)->b_global_name[sizeof((*sipp)->b_global_name) - 1] = 0;
(*sipp)->b_file_name[sizeof((*sipp)->b_file_name) - 1] = 0;
(*sipp)->b_debug_info[sizeof((*sipp)->b_debug_info) - 1] = 0;
}
if (strcmp(keyword, "sysinit") == 0)
do_sysinit();
else if (strcmp(keyword, "sysuninit") == 0)
do_sysinit();
else
errx(EX_USAGE, "Unknown keyword '%s'", keyword);
success = 1;
return (0);
}
static void
do_sysinit(void)
{
struct sysinit_data **sipp;
int c;
snprintf(scratch_buf, sizeof(scratch_buf),
"/*\n"
" * This file was automatically generated.\n"
" * Please do not edit.\n"
" */\n\n");
/* write out externals */
for (c = 0, sipp = start; sipp < stop; c++, sipp++) {
if (strcmp((const char *)(*sipp)->b_keyword_name, keyword))
continue;
if ((*sipp)->dw_msb_value == 0)
continue;
snprintf(scratch_buf, sizeof(scratch_buf),
"/* #%04u: %s entry at %s:%u */\n",
c, (*sipp)->b_debug_info, (*sipp)->b_file_name,
(unsigned int)(*sipp)->dw_file_line);
do_write(output_file, scratch_buf);
snprintf(scratch_buf, sizeof(scratch_buf),
"extern %s %s;\n\n", (*sipp)->b_global_type,
(*sipp)->b_global_name);
do_write(output_file, scratch_buf);
}
snprintf(scratch_buf, sizeof(scratch_buf),
"const void *%s[] = {\n", struct_name);
do_write(output_file, scratch_buf);
/* write out actual table */
for (c = 0, sipp = start; sipp < stop; c++, sipp++) {
if (strcmp((const char *)(*sipp)->b_keyword_name, keyword))
continue;
if ((*sipp)->dw_msb_value == 0)
continue;
snprintf(scratch_buf, sizeof(scratch_buf),
"\t&%s, /* #%04u */\n",
(*sipp)->b_global_name, (unsigned int)c);
do_write(output_file, scratch_buf);
}
snprintf(scratch_buf, sizeof(scratch_buf),
"\t(const void *)0\n"
"};\n");
do_write(output_file, scratch_buf);
}