mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-20 11:11:24 +00:00
313 lines
6.7 KiB
C++
313 lines
6.7 KiB
C++
/*-
|
|
* Copyright (c) 2013 David Chisnall
|
|
* All rights reserved.
|
|
*
|
|
* This software was developed by SRI International and the University of
|
|
* Cambridge Computer Laboratory under DARPA/AFRL contract (FA8750-10-C-0237)
|
|
* ("CTSRD"), as part of the DARPA CRASH research programme.
|
|
*
|
|
* 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.
|
|
*
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#include "dtb.hh"
|
|
#include <sys/types.h>
|
|
#include <inttypes.h>
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
|
|
|
|
namespace dtc
|
|
{
|
|
namespace dtb
|
|
{
|
|
|
|
void output_writer::write_data(byte_buffer b)
|
|
{
|
|
for (byte_buffer::iterator i=b.begin(), e=b.end(); i!=e ; i++)
|
|
{
|
|
write_data(*i);
|
|
}
|
|
}
|
|
|
|
void
|
|
binary_writer::write_string(string name)
|
|
{
|
|
name.push_to_buffer(buffer);
|
|
// Trailing nul
|
|
buffer.push_back(0);
|
|
}
|
|
|
|
void
|
|
binary_writer::write_data(uint8_t v)
|
|
{
|
|
buffer.push_back(v);
|
|
}
|
|
|
|
void
|
|
binary_writer::write_data(uint32_t v)
|
|
{
|
|
while (buffer.size() % 4 != 0)
|
|
{
|
|
buffer.push_back(0);
|
|
}
|
|
push_big_endian(buffer, v);
|
|
}
|
|
|
|
void
|
|
binary_writer::write_data(uint64_t v)
|
|
{
|
|
while (buffer.size() % 8 != 0)
|
|
{
|
|
buffer.push_back(0);
|
|
}
|
|
push_big_endian(buffer, v);
|
|
}
|
|
|
|
void
|
|
binary_writer::write_to_file(int fd)
|
|
{
|
|
// FIXME: Check return
|
|
write(fd, buffer.data(), buffer.size());
|
|
}
|
|
|
|
uint32_t
|
|
binary_writer::size()
|
|
{
|
|
return buffer.size();
|
|
}
|
|
|
|
void
|
|
asm_writer::write_string(const char *c)
|
|
{
|
|
while (*c)
|
|
{
|
|
buffer.push_back((uint8_t)*(c++));
|
|
}
|
|
}
|
|
|
|
void
|
|
asm_writer::write_line(const char *c)
|
|
{
|
|
if (byte_count != 0)
|
|
{
|
|
byte_count = 0;
|
|
buffer.push_back('\n');
|
|
}
|
|
write_string(c);
|
|
}
|
|
|
|
void
|
|
asm_writer::write_byte(uint8_t b)
|
|
{
|
|
char out[3] = {0};
|
|
if (byte_count++ == 0)
|
|
{
|
|
buffer.push_back('\t');
|
|
}
|
|
write_string(".byte 0x");
|
|
snprintf(out, 3, "%.2hhx", b);
|
|
buffer.push_back(out[0]);
|
|
buffer.push_back(out[1]);
|
|
if (byte_count == 4)
|
|
{
|
|
buffer.push_back('\n');
|
|
byte_count = 0;
|
|
}
|
|
else
|
|
{
|
|
buffer.push_back(';');
|
|
buffer.push_back(' ');
|
|
}
|
|
}
|
|
|
|
void
|
|
asm_writer::write_label(string name)
|
|
{
|
|
write_line("\t.globl ");
|
|
name.push_to_buffer(buffer);
|
|
buffer.push_back('\n');
|
|
name.push_to_buffer(buffer);
|
|
buffer.push_back(':');
|
|
buffer.push_back('\n');
|
|
buffer.push_back('_');
|
|
name.push_to_buffer(buffer);
|
|
buffer.push_back(':');
|
|
buffer.push_back('\n');
|
|
|
|
}
|
|
|
|
void
|
|
asm_writer::write_comment(string name)
|
|
{
|
|
write_line("\t/* ");
|
|
name.push_to_buffer(buffer);
|
|
write_string(" */\n");
|
|
}
|
|
|
|
void
|
|
asm_writer::write_string(string name)
|
|
{
|
|
write_line("\t.string \"");
|
|
name.push_to_buffer(buffer);
|
|
write_line("\"\n");
|
|
bytes_written += name.size() + 1;
|
|
}
|
|
|
|
void
|
|
asm_writer::write_data(uint8_t v)
|
|
{
|
|
write_byte(v);
|
|
bytes_written++;
|
|
}
|
|
|
|
void
|
|
asm_writer::write_data(uint32_t v)
|
|
{
|
|
if (bytes_written % 4 != 0)
|
|
{
|
|
write_line("\t.balign 4\n");
|
|
bytes_written += (4 - (bytes_written % 4));
|
|
}
|
|
write_byte((v >> 24) & 0xff);
|
|
write_byte((v >> 16) & 0xff);
|
|
write_byte((v >> 8) & 0xff);
|
|
write_byte((v >> 0) & 0xff);
|
|
bytes_written += 4;
|
|
}
|
|
|
|
void
|
|
asm_writer::write_data(uint64_t v)
|
|
{
|
|
if (bytes_written % 8 != 0)
|
|
{
|
|
write_line("\t.balign 8\n");
|
|
bytes_written += (8 - (bytes_written % 8));
|
|
}
|
|
write_byte((v >> 56) & 0xff);
|
|
write_byte((v >> 48) & 0xff);
|
|
write_byte((v >> 40) & 0xff);
|
|
write_byte((v >> 32) & 0xff);
|
|
write_byte((v >> 24) & 0xff);
|
|
write_byte((v >> 16) & 0xff);
|
|
write_byte((v >> 8) & 0xff);
|
|
write_byte((v >> 0) & 0xff);
|
|
bytes_written += 8;
|
|
}
|
|
|
|
void
|
|
asm_writer::write_to_file(int fd)
|
|
{
|
|
// FIXME: Check return
|
|
write(fd, buffer.data(), buffer.size());
|
|
}
|
|
|
|
uint32_t
|
|
asm_writer::size()
|
|
{
|
|
return bytes_written;
|
|
}
|
|
|
|
void
|
|
header::write(output_writer &out)
|
|
{
|
|
out.write_label(string("dt_blob_start"));
|
|
out.write_label(string("dt_header"));
|
|
out.write_comment("magic");
|
|
out.write_data(magic);
|
|
out.write_comment("totalsize");
|
|
out.write_data(totalsize);
|
|
out.write_comment("off_dt_struct");
|
|
out.write_data(off_dt_struct);
|
|
out.write_comment("off_dt_strings");
|
|
out.write_data(off_dt_strings);
|
|
out.write_comment("off_mem_rsvmap");
|
|
out.write_data(off_mem_rsvmap);
|
|
out.write_comment("version");
|
|
out.write_data(version);
|
|
out.write_comment("last_comp_version");
|
|
out.write_data(last_comp_version);
|
|
out.write_comment("boot_cpuid_phys");
|
|
out.write_data(boot_cpuid_phys);
|
|
out.write_comment("size_dt_strings");
|
|
out.write_data(size_dt_strings);
|
|
out.write_comment("size_dt_struct");
|
|
out.write_data(size_dt_struct);
|
|
}
|
|
|
|
bool
|
|
header::read_dtb(input_buffer &input)
|
|
{
|
|
if (!(input.consume_binary(magic) && magic == 0xd00dfeed))
|
|
{
|
|
fprintf(stderr, "Missing magic token in header. Got %" PRIx32
|
|
" expected 0xd00dfeed\n", magic);
|
|
return false;
|
|
}
|
|
return input.consume_binary(totalsize) &&
|
|
input.consume_binary(off_dt_struct) &&
|
|
input.consume_binary(off_dt_strings) &&
|
|
input.consume_binary(off_mem_rsvmap) &&
|
|
input.consume_binary(version) &&
|
|
input.consume_binary(last_comp_version) &&
|
|
input.consume_binary(boot_cpuid_phys) &&
|
|
input.consume_binary(size_dt_strings) &&
|
|
input.consume_binary(size_dt_struct);
|
|
}
|
|
uint32_t
|
|
string_table::add_string(string str)
|
|
{
|
|
std::map<string, uint32_t>::iterator old = string_offsets.find(str);
|
|
if (old == string_offsets.end())
|
|
{
|
|
uint32_t start = size;
|
|
// Don't forget the trailing nul
|
|
size += str.size() + 1;
|
|
string_offsets.insert(std::make_pair(str, start));
|
|
strings.push_back(str);
|
|
return start;
|
|
}
|
|
else
|
|
{
|
|
return old->second;
|
|
}
|
|
}
|
|
|
|
void
|
|
string_table::write(dtb::output_writer &writer)
|
|
{
|
|
writer.write_comment(string("Strings table."));
|
|
writer.write_label(string("dt_strings_start"));
|
|
for (std::vector<string>::iterator i=strings.begin(), e=strings.end() ;
|
|
i!=e ; ++i)
|
|
{
|
|
writer.write_string(*i);
|
|
}
|
|
writer.write_label(string("dt_strings_end"));
|
|
}
|
|
|
|
} // namespace dtb
|
|
|
|
} // namespace dtc
|
|
|