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rtems-rapper.cpp
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/*
* Copyright (c) 2012, Chris Johns <[email protected]>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/**
* @file
*
* @ingroup rtems_rld
*
* @brief RTEMS RAP Manager lets you look at and play with RAP files.
*
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <algorithm>
#include <iomanip>
#include <iostream>
#include <vector>
#include <cxxabi.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <getopt.h>
#include <rld.h>
#include <rld-compression.h>
#include <rld-files.h>
#include <rld-process.h>
#include <rld-rap.h>
#include <rtems-utils.h>
#ifndef HAVE_KILL
#define kill(p,s) raise(s)
#endif
/**
* RTEMS Application.
*/
namespace rap
{
/**
* The names of the RAP sections.
*/
static const char* section_names[6] =
{
".text",
".const",
".ctor",
".dtor",
".data",
".bss"
};
/**
* A relocation record.
*/
struct relocation
{
uint32_t info;
uint32_t offset;
uint32_t addend;
std::string symname;
off_t rap_off;
relocation ();
void output ();
};
typedef std::vector < relocation > relocations;
/**
* Relocation offset sorter for the relocations container.
*/
class reloc_offset_compare
{
public:
bool operator () (const relocation& lhs,
const relocation& rhs) const {
return lhs.offset < rhs.offset;
}
};
/**
* A RAP section.
*/
struct section
{
std::string name;
uint32_t size;
uint32_t alignment;
uint8_t* data;
uint32_t relocs_size;
relocations relocs;
bool rela;
off_t rap_off;
section ();
~section ();
void load_data (rld::compress::compressor& comp);
void load_relocs (rld::compress::compressor& comp);
};
/**
* Section detail
*/
struct section_detail
{
uint32_t name; //< The offset in the strtable.
uint32_t offset; //< The offset in the rap section.
uint32_t id; //< The rap id.
uint32_t size; //< The size of the elf section.
uint32_t obj; //< The obj id.
/* Constructor */
section_detail (const section_detail& s);
section_detail ();
};
section_detail::section_detail (const section_detail& s)
: name (s.name),
offset (s.offset),
id (s.id),
size (s.size),
obj (s.obj)
{
}
section_detail::section_detail ()
: name (0),
offset (0),
id (0),
size (0),
obj (0)
{
}
/**
* A container of section_detail
*/
typedef std::list < section_detail > section_details;
/**
* A RAP file.
*/
struct file
{
enum {
rap_comp_buffer = 2 * 1024
};
std::string header;
size_t rhdr_len;
uint32_t rhdr_length;
uint32_t rhdr_version;
std::string rhdr_compression;
uint32_t rhdr_checksum;
off_t machine_rap_off;
uint32_t machinetype;
uint32_t datatype;
uint32_t class_;
off_t layout_rap_off;
std::string init;
uint32_t init_off;
std::string fini;
uint32_t fini_off;
off_t strtab_rap_off;
uint32_t strtab_size;
uint8_t* strtab;
off_t symtab_rap_off;
uint32_t symtab_size;
uint8_t* symtab;
off_t relocs_rap_off;
uint32_t relocs_size; /* not used */
off_t detail_rap_off;
uint32_t obj_num;
uint8_t** obj_name;
uint32_t* sec_num;
uint8_t* rpath;
uint32_t rpathlen;
uint8_t* str_detail;
section_details sec_details;
section secs[rld::rap::rap_secs];
/**
* Open a RAP file and read the header.
*/
file (const std::string& name, bool warnings);
/**
* Close the RAP file.
*/
~file ();
/**
* Parse header.
*/
void parse_header ();
/**
* Load the file.
*/
void load ();
/**
* Expand the image.
*/
void expand ();
/**
* Load details.
*/
void load_details(rld::compress::compressor& comp);
/**
* The name.
*/
const std::string name () const;
/**
* The number of symbols in the symbol table.
*/
int symbols () const;
/**
* Return a symbol given an index.
*/
void symbol (int index,
uint32_t& data,
uint32_t& name,
uint32_t& value) const;
/**
* Return the string from the string table.
*/
const char* string (int index);
private:
bool warnings;
rld::files::image image;
};
template < typename T > T
get_value (const uint8_t* data)
{
T v = 0;
for (size_t b = 0; b < sizeof (T); ++b)
{
v <<= 8;
v |= (T) data[b];
}
return v;
}
relocation::relocation ()
: info (0),
offset (0),
addend (0),
rap_off (0)
{
}
void
relocation::output ()
{
std::cout << std::hex << std::setfill ('0')
<< "0x" << std::setw (8) << info
<< " 0x" << std::setw (8) << offset
<< " 0x" << std::setw(8) << addend
<< std::dec << std::setfill (' ')
<< " " << symname;
}
section::section ()
: size (0),
alignment (0),
data (0),
relocs_size (0),
relocs (0),
rela (false),
rap_off (0)
{
}
section::~section ()
{
if (data)
delete [] data;
}
void
section::load_data (rld::compress::compressor& comp)
{
rap_off = comp.offset ();
if (size)
{
data = new uint8_t[size];
if (comp.read (data, size) != size)
throw rld::error ("Reading section data failed", "rapper");
}
}
void
section::load_relocs (rld::compress::compressor& comp)
{
uint32_t header;
comp >> header;
rela = header & RAP_RELOC_RELA ? true : false;
relocs_size = header & ~RAP_RELOC_RELA;
if (relocs_size)
{
for (uint32_t r = 0; r < relocs_size; ++r)
{
relocation reloc;
reloc.rap_off = comp.offset ();
comp >> reloc.info
>> reloc.offset;
if (((reloc.info & RAP_RELOC_STRING) == 0) || rela)
comp >> reloc.addend;
if ((reloc.info & RAP_RELOC_STRING) != 0)
{
if ((reloc.info & RAP_RELOC_STRING_EMBED) == 0)
{
size_t symname_size = (reloc.info & ~(3 << 30)) >> 8;
reloc.symname.resize (symname_size);
size_t symname_read = comp.read ((void*) reloc.symname.c_str (), symname_size);
if (symname_read != symname_size)
throw rld::error ("Reading reloc symbol name failed", "rapper");
}
}
relocs.push_back (reloc);
}
std::stable_sort (relocs.begin (), relocs.end (), reloc_offset_compare ());
}
}
file::file (const std::string& name, bool warnings)
: rhdr_len (0),
rhdr_length (0),
rhdr_version (0),
rhdr_checksum (0),
machine_rap_off (0),
machinetype (0),
datatype (0),
class_ (0),
layout_rap_off (0),
init_off (0),
fini_off (0),
strtab_rap_off (0),
strtab_size (0),
strtab (0),
symtab_rap_off (0),
symtab_size (0),
symtab (0),
relocs_rap_off (0),
relocs_size (0),
detail_rap_off (0),
obj_num (0),
obj_name (0),
sec_num (0),
rpath (0),
rpathlen (0),
str_detail (0),
warnings (warnings),
image (name)
{
for (int s = 0; s < rld::rap::rap_secs; ++s)
secs[s].name = rld::rap::section_name (s);
image.open ();
parse_header ();
}
file::~file ()
{
image.close ();
if (symtab)
delete [] symtab;
if (strtab)
delete [] strtab;
if (obj_name)
delete [] obj_name;
if (sec_num)
delete [] sec_num;
if (str_detail)
delete [] str_detail;
}
void
file::parse_header ()
{
std::string name = image.name ().full ();
char rhdr[64];
image.seek_read (0, (uint8_t*) rhdr, 64);
if ((rhdr[0] != 'R') || (rhdr[1] != 'A') || (rhdr[2] != 'P') || (rhdr[3] != ','))
throw rld::error ("Invalid RAP file", "open: " + name);
char* sptr = rhdr + 4;
char* eptr;
rhdr_length = ::strtoul (sptr, &eptr, 10);
if (*eptr != ',')
throw rld::error ("Cannot parse RAP header", "open: " + name);
sptr = eptr + 1;
rhdr_version = ::strtoul (sptr, &eptr, 10);
if (*eptr != ',')
throw rld::error ("Cannot parse RAP header", "open: " + name);
sptr = eptr + 1;
if ((sptr[0] == 'N') &&
(sptr[1] == 'O') &&
(sptr[2] == 'N') &&
(sptr[3] == 'E'))
{
rhdr_compression = "NONE";
eptr = sptr + 4;
}
else if ((sptr[0] == 'L') &&
(sptr[1] == 'Z') &&
(sptr[2] == '7') &&
(sptr[3] == '7'))
{
rhdr_compression = "LZ77";
eptr = sptr + 4;
}
else
throw rld::error ("Cannot parse RAP header", "open: " + name);
if (*eptr != ',')
throw rld::error ("Cannot parse RAP header", "open: " + name);
sptr = eptr + 1;
rhdr_checksum = ::strtoul (sptr, &eptr, 16);
if (*eptr != '\n')
throw rld::error ("Cannot parse RAP header", "open: " + name);
rhdr_len = eptr - rhdr + 1;
if (warnings && (rhdr_length != image.size ()))
std::cout << " warning: header length does not match file size: header="
<< rhdr_length
<< " file-size=" << image.size ()
<< std::endl;
header.insert (0, rhdr, rhdr_len);
image.seek (rhdr_len);
}
void
file::load_details (rld::compress::compressor& comp)
{
uint32_t tmp;
comp >> rpathlen;
obj_name = new uint8_t*[obj_num];
sec_num = new uint32_t[obj_num];
/* how many sections of each object file */
for (uint32_t i = 0; i < obj_num; i++)
{
comp >> tmp;
sec_num[i] = tmp;
}
/* strtable size */
comp >> tmp;
str_detail = new uint8_t[tmp];
if (comp.read (str_detail, tmp) != tmp)
throw rld::error ("Reading file str details error", "rapper");
if (rpathlen > 0)
rpath = (uint8_t*)str_detail;
else
rpath = NULL;
section_detail sec;
for (uint32_t i = 0; i < obj_num; i++)
{
sec.obj = i;
for (uint32_t j = 0; j < sec_num[i]; j++)
{
comp >> sec.name;
comp >> tmp;
sec.offset = tmp & 0xfffffff;
sec.id = tmp >> 28;
comp >> sec.size;
sec_details.push_back (section_detail (sec));
}
}
}
void
file::load ()
{
image.seek (rhdr_len);
rld::compress::compressor comp (image, rap_comp_buffer, false);
/*
* uint32_t: machinetype
* uint32_t: datatype
* uint32_t: class
*/
machine_rap_off = comp.offset ();
comp >> machinetype
>> datatype
>> class_;
/*
* uint32_t: init
* uint32_t: fini
* uint32_t: symtab_size
* uint32_t: strtab_size
* uint32_t: relocs_size
*/
layout_rap_off = comp.offset ();
comp >> init_off
>> fini_off
>> symtab_size
>> strtab_size
>> relocs_size;
/*
* Load the file details.
*/
detail_rap_off = comp.offset ();
comp >> obj_num;
if (obj_num > 0)
load_details(comp);
/*
* uint32_t: text_size
* uint32_t: text_alignment
* uint32_t: const_size
* uint32_t: const_alignment
* uint32_t: ctor_size
* uint32_t: ctor_alignment
* uint32_t: dtor_size
* uint32_t: dtor_alignment
* uint32_t: data_size
* uint32_t: data_alignment
* uint32_t: bss_size
* uint32_t: bss_alignment
*/
for (int s = 0; s < rld::rap::rap_secs; ++s)
comp >> secs[s].size
>> secs[s].alignment;
/*
* Load sections.
*/
for (int s = 0; s < rld::rap::rap_secs; ++s)
if (s != rld::rap::rap_bss)
secs[s].load_data (comp);
/*
* Load the string table.
*/
strtab_rap_off = comp.offset ();
if (strtab_size)
{
strtab = new uint8_t[strtab_size];
if (comp.read (strtab, strtab_size) != strtab_size)
throw rld::error ("Reading string table failed", "rapper");
}
/*
* Load the symbol table.
*/
symtab_rap_off = comp.offset ();
if (symtab_size)
{
symtab = new uint8_t[symtab_size];
if (comp.read (symtab, symtab_size) != symtab_size)
throw rld::error ("Reading symbol table failed", "rapper");
}
/*
* Load the relocation tables.
*/
relocs_rap_off = comp.offset ();
for (int s = 0; s < rld::rap::rap_secs; ++s)
secs[s].load_relocs (comp);
}
void
file::expand ()
{
std::string name = image.name ().full ();
std::string extension = rld::files::extension (image.name ().full ());
name = name.substr (0, name.size () - extension.size ()) + ".xrap";
image.seek (rhdr_len);
rld::compress::compressor comp (image, rap_comp_buffer, false);
rld::files::image out (name);
out.open (true);
out.seek (0);
while (true)
{
if (comp.read (out, rap_comp_buffer) != rap_comp_buffer)
break;
}
out.close ();
}
const std::string
file::name () const
{
return image.name ().full ();
}
int
file::symbols () const
{
return symtab_size / (3 * sizeof (uint32_t));
}
void
file::symbol (int index, uint32_t& data, uint32_t& name, uint32_t& value) const
{
if (index < symbols ())
{
uint8_t* sym = symtab + (index * 3 * sizeof (uint32_t));
data = get_value < uint32_t > (sym);
name = get_value < uint32_t > (sym + (1 * sizeof (uint32_t)));
value = get_value < uint32_t > (symtab + (2 * sizeof (uint32_t)));
}
}
const char*
file::string (int index)
{
std::string name = image.name ().full ();
if (strtab_size == 0)
throw rld::error ("No string table", "string: " + name);
uint32_t offset = 0;
int count = 0;
while (offset < strtab_size)
{
if (count++ == index)
return (const char*) &strtab[offset];
offset = ::strlen ((const char*) &strtab[offset]) + 1;
}
throw rld::error ("Invalid string index", "string: " + name);
}
}
void
rap_show (rld::files::paths& raps,
bool warnings,
bool show_header,
bool show_machine,
bool show_layout,
bool show_strings,
bool show_symbols,
bool show_relocs,
bool show_details)
{
for (rld::files::paths::iterator pi = raps.begin();
pi != raps.end();
++pi)
{
std::cout << *pi << ':' << std::endl;
rap::file r (*pi, warnings);
try
{
r.load ();
}
catch (rld::error re)
{
std::cout << " error: "
<< re.where << ": " << re.what
<< std::endl
<< " warning: file read failed, some data may be corrupt or not present."
<< std::endl;
}
if (show_header)
{
std::cout << " Header:" << std::endl
<< " string: " << r.header
<< " length: " << r.rhdr_len << std::endl
<< " version: " << r.rhdr_version << std::endl
<< " compression: " << r.rhdr_compression << std::endl
<< std::hex << std::setfill ('0')
<< " checksum: " << std::setw (8) << r.rhdr_checksum << std::endl
<< std::dec << std::setfill(' ');
}
if (show_machine)
{
std::cout << " Machine: 0x"
<< std::hex << std::setfill ('0')
<< std::setw (8) << r.machine_rap_off
<< std::setfill (' ') << std::dec
<< " (" << r.machine_rap_off << ')' << std::endl
<< " machinetype: "<< r.machinetype << std::endl
<< " datatype: "<< r.datatype << std::endl
<< " class: "<< r.class_ << std::endl;
}
if (show_layout)
{
std::cout << " Layout: 0x"
<< std::hex << std::setfill ('0')
<< std::setw (8) << r.layout_rap_off
<< std::setfill (' ') << std::dec
<< " (" << r.layout_rap_off << ')' << std::endl
<< std::setw (18) << " "
<< " size align offset " << std::endl;
uint32_t relocs_size = 0;
for (int s = 0; s < rld::rap::rap_secs; ++s)
{
relocs_size += r.secs[s].relocs.size ();
std::cout << std::setw (16) << rld::rap::section_name (s)
<< ": " << std::setw (6) << r.secs[s].size
<< std::setw (7) << r.secs[s].alignment;
if (s != rld::rap::rap_bss)
std::cout << std::hex << std::setfill ('0')
<< " 0x" << std::setw (8) << r.secs[s].rap_off
<< std::setfill (' ') << std::dec
<< " (" << r.secs[s].rap_off << ')';
else
std::cout << " -";
std::cout << std::endl;
}
std::cout << std::setw (16) << "strtab" << ": "
<< std::setw (6) << r.strtab_size
<< std::setw (7) << '-'
<< std::hex << std::setfill ('0')
<< " 0x" << std::setw (8) << r.strtab_rap_off
<< std::setfill (' ') << std::dec
<< " (" << r.strtab_rap_off << ')' << std::endl
<< std::setw (16) << "symtab" << ": "
<< std::setw (6) << r.symtab_size
<< std::setw (7) << '-'
<< std::hex << std::setfill ('0')
<< " 0x" << std::setw (8) << r.symtab_rap_off
<< std::setfill (' ') << std::dec
<< " (" << r.symtab_rap_off << ')' << std::endl
<< std::setw (16) << "relocs" << ": "
<< std::setw (6) << (relocs_size * 3 * sizeof (uint32_t))
<< std::setw (7) << '-'
<< std::hex << std::setfill ('0')
<< " 0x" << std::setw (8) << r.relocs_rap_off
<< std::setfill (' ') << std::dec
<< " (" << r.relocs_rap_off << ')' << std::endl;
}
if (show_details)
{
std::cout << " Details: 0x"
<< std::hex << std::setfill ('0')
<< std::setw (8) << r.detail_rap_off
<< std::setfill (' ') << std::dec
<< " (" << r.detail_rap_off << ')' << std::endl;
uint32_t pos = 0;
if (r.rpath != NULL)
{
std::cout << " rpath:" << std::endl;
while (pos < r.rpathlen)
{
std::cout << " " << r.rpath + pos << std::endl;
pos = std::string ((char*)(r.rpath + pos)).length () + pos + 1;
}
}
if (r.obj_num == 0)
std::cout << " No details" << std::endl;
else
std::cout << ' ' << r.obj_num <<" Files" << std::endl;
for (uint32_t i = 0; i < r.obj_num; ++i)
{
r.obj_name[i] = (uint8_t*) &r.str_detail[pos];
pos += ::strlen ((char*) &r.str_detail[pos]) + 1;
}
for (uint32_t i = 0; i < r.obj_num; ++i)
{
std::cout << " File: " << r.obj_name[i] << std::endl;
for (rap::section_details::const_iterator sd = r.sec_details.begin ();
sd != r.sec_details.end ();
++sd)
{
rap::section_detail tmp = *sd;
if (tmp.obj == i)
{
std::cout << std::setw (12) << "name:"
<< std::setw (16) << (char*)&r.str_detail[tmp.name]
<< " rap_section:"<< std::setw (8)
<< rap::section_names[tmp.id]
<< std::hex << std::setfill ('0')
<< " offset:0x" << std::setw (8) << tmp.offset
<< " size:0x" << std::setw (8) << tmp.size << std::dec
<< std::setfill (' ') << std::endl;
}
}
}
}
if (show_strings)
{
std::cout << " Strings: 0x"
<< std::hex << std::setfill ('0')
<< std::setw (8) << r.strtab_rap_off
<< std::setfill (' ') << std::dec
<< " (" << r.strtab_rap_off << ')'
<< " size: " << r.strtab_size
<< std::endl;
if (r.strtab_size)
{
uint32_t offset = 0;
int count = 0;
while (offset < r.strtab_size)
{
std::cout << std::setw (16) << count++
<< std::hex << std::setfill ('0')
<< " (0x" << std::setw (6) << offset << "): "
<< std::dec << std::setfill (' ')
<< (char*) &r.strtab[offset] << std::endl;
offset += ::strlen ((char*) &r.strtab[offset]) + 1;
}
}
else
{
std::cout << std::setw (16) << " "
<< "No string table found." << std::endl;
}
}
if (show_symbols)
{
std::cout << " Symbols: 0x"
<< std::hex << std::setfill ('0')
<< std::setw (8) << r.symtab_rap_off
<< std::setfill (' ') << std::dec
<< " (" << r.symtab_rap_off << ')'
<< " size: " << r.symtab_size
<< std::endl;
if (r.symtab_size)
{
std::cout << std::setw (18) << " "
<< " data section value name" << std::endl;
for (int s = 0; s < r.symbols (); ++s)
{
uint32_t data;
uint32_t name;
uint32_t value;
r.symbol (s, data, name, value);
std::cout << std::setw (16) << s << ": "
<< std::hex << std::setfill ('0')
<< "0x" << std::setw (4) << (data & 0xffff)
<< std::dec << std::setfill (' ')
<< " " << std::setw (8) << rld::rap::section_name (data >> 16)
<< std::hex << std::setfill ('0')
<< " 0x" << std::setw(8) << value
<< " " << &r.strtab[name]
<< std::dec << std::setfill (' ')
<< std::endl;
}
}
else
{
std::cout << std::setw (16) << " "
<< "No symbol table found." << std::endl;
}
}
if (show_relocs)
{
std::cout << " Relocations: 0x"
<< std::hex << std::setfill ('0')
<< std::setw (8) << r.relocs_rap_off
<< std::setfill (' ') << std::dec
<< " (" << r.relocs_rap_off << ')' << std::endl;
int count = 0;
for (int s = 0; s < rld::rap::rap_secs; ++s)
{
if (r.secs[s].relocs.size ())
{
const char* rela = r.secs[s].rela ? "(A)" : " ";
std::cout << std::setw (16) << r.secs[s].name
<< ": info offset addend "
<< rela
<< " symbol name" << std::endl;
for (size_t f = 0; f < r.secs[s].relocs.size (); ++f)
{
rap::relocation& reloc = r.secs[s].relocs[f];
std::cout << std::setw (16) << count++ << ": ";
reloc.output ();
std::cout << std::endl;
}
}
}
}
}
}
void
rap_overlay (rld::files::paths& raps, bool warnings)
{
std::cout << "Overlay .... " << std::endl;
for (rld::files::paths::iterator pi = raps.begin();
pi != raps.end();
++pi)
{
rap::file r (*pi, warnings);
std::cout << r.name () << std::endl;
r.load ();
for (int s = 0; s < rld::rap::rap_secs; ++s)
{
rap::section& sec = r.secs[s];
if (sec.size && sec.data)
{
std::cout << rld::rap::section_name (s) << ':' << std::endl;
size_t line_length = 16;
uint32_t offset = 0;
size_t reloc = 0;
while (offset < sec.size)
{
size_t length = sec.size - offset;
if (reloc < sec.relocs.size ())
length = sec.relocs[reloc].offset - offset;
if ((offset + length) < sec.size)
{
length += line_length;
length -= length % line_length;
}