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linkers/exe-info: Add DWARF support to gather and check producer details.
- Provide support to list the compilers and assemblers used to build an executable. - List the machine flags showing which flags are common and which are not.
This commit is contained in:
Chris Johns
parent
b73f905e3a
commit
1e21ea76b7
@ -43,6 +43,7 @@
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#include <rld.h>
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#include <rld-buffer.h>
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#include <rld-dwarf.h>
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#include <rld-files.h>
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#include <rld-process.h>
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#include <rld-rtems.h>
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@ -131,6 +132,7 @@ namespace rld
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struct image
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{
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files::object exe; //< The object file that is the executable.
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dwarf::file debug; //< The executable's DWARF details.
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symbols::table symbols; //< The synbols for a map.
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symbols::addrtab addresses; //< The symbols keyed by address.
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files::sections secs; //< The sections in the executable.
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@ -148,6 +150,11 @@ namespace rld
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*/
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~image ();
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/*
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* Check the compiler and flags match.
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*/
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void output_compilation_unit (bool objects);
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/*
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* Output the sections.
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*/
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@ -260,6 +267,7 @@ namespace rld
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*/
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exe.open ();
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exe.begin ();
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debug.begin (exe.elf ());
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if (!exe.valid ())
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throw rld::error ("Not valid: " + exe.name ().full (),
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@ -284,6 +292,7 @@ namespace rld
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* Load the symbols and sections.
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*/
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exe.load_symbols (symbols, true);
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debug.load_debug ();
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symbols.globals (addresses);
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symbols.weaks (addresses);
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symbols.locals (addresses);
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@ -292,7 +301,186 @@ namespace rld
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image::~image ()
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{
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exe.close ();
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}
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void
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image::output_compilation_unit (bool objects)
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{
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dwarf::compilation_units& cus = debug.get_cus ();
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std::cout << "Compilation: " << std::endl;
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rld::strings flag_exceptions = { "-O",
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"-g",
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"-mtune=",
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"-fno-builtin",
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"-fno-inline",
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"-fexceptions",
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"-fnon-call-exceptions",
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"-fvisibility=",
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"-fno-stack-protector",
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"-fbuilding-libgcc",
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"-fno-implicit-templates",
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"-ffunction-sections",
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"-fdata-sections",
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"-frandom-seed=",
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"-fno-common",
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"-fno-keep-inline-functions" };
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dwarf::producer_sources producers;
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debug.get_producer_sources (producers);
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/*
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* Find which flags are common to the building of all source. We are only
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* interested in files that have any flags. This filters out things like
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* the assembler which does not have flags.
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*/
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rld::strings all_flags;
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size_t source_max = 0;
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for (auto& p : producers)
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{
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dwarf::source_flags_compare compare;
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std::sort (p.sources.begin (), p.sources.end (), compare);
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for (auto& s : p.sources)
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{
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size_t len = rld::path::basename (s.source).length ();
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if (len > source_max)
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source_max = len;
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if (!s.flags.empty ())
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{
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for (auto& f : s.flags)
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{
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bool add = true;
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for (auto& ef : flag_exceptions)
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{
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if (rld::starts_with (f, ef))
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{
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add = false;
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break;
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}
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}
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if (add)
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{
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for (auto& af : all_flags)
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{
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if (f == af)
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{
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add = false;
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break;
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}
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}
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if (add)
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all_flags.push_back (f);
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}
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}
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}
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}
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}
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rld::strings common_flags;
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for (auto& flag : all_flags)
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{
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bool found_in_all = true;
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for (auto& p : producers)
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{
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for (auto& s : p.sources)
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{
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if (!s.flags.empty ())
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{
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bool flag_found = false;
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for (auto& f : s.flags)
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{
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if (flag == f)
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{
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flag_found = true;
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break;
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}
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}
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if (!flag_found)
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{
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found_in_all = false;
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break;
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}
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}
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if (!found_in_all)
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break;
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}
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}
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if (found_in_all)
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common_flags.push_back (flag);
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}
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std::cout << " Producers: " << producers.size () << std::endl;
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for (auto& p : producers)
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{
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std::cout << " | " << p.producer
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<< ": " << p.sources.size () << " objects" << std::endl;
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}
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std::cout << " Common flags: " << common_flags.size () << std::endl
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<< " |";
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for (auto& f : common_flags)
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std::cout << ' ' << f;
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std::cout << std::endl;
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if (objects)
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{
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std::cout << " Object files: " << cus.size () << std::endl;
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rld::strings filter_flags = common_flags;
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filter_flags.insert (filter_flags.end (),
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flag_exceptions.begin (),
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flag_exceptions.end());
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for (auto& p : producers)
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{
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std::cout << ' ' << p.producer
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<< ": " << p.sources.size () << " objects" << std::endl;
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for (auto& s : p.sources)
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{
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std::cout << " | "
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<< std::setw (source_max + 1) << std::left
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<< rld::path::basename (s.source);
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if (!s.flags.empty ())
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{
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bool first = true;
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for (auto& f : s.flags)
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{
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bool present = false;
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for (auto& ff : filter_flags)
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{
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if (rld::starts_with(f, ff))
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{
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present = true;
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break;
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}
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}
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if (!present)
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{
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if (first)
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{
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std::cout << ':';
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first = false;
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}
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std::cout << ' ' << f;
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}
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}
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}
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std::cout << std::endl;
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}
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}
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}
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std::cout << std::endl;
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}
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void
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@ -442,7 +630,8 @@ usage (int exit_code)
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<< " -a : all output excluding the map (also --all)" << std::endl
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<< " -S : show all section (also --sections)" << std::endl
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<< " -I : show init section tables (also --init)" << std::endl
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<< " -F : show fini section tables (also --fini)" << std::endl;
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<< " -F : show fini section tables (also --fini)" << std::endl
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<< " -O : show object files (also --objects)" << std::endl;
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::exit (exit_code);
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}
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@ -480,6 +669,13 @@ setup_signals (void)
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#endif
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}
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void
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unhandled_exception (void)
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{
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std::cerr << "error: exception handling error, please report" << std::endl;
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exit (1);
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}
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int
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main (int argc, char* argv[])
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{
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@ -487,6 +683,8 @@ main (int argc, char* argv[])
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setup_signals ();
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std::set_terminate(unhandled_exception);
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try
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{
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std::string exe_name;
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@ -495,6 +693,7 @@ main (int argc, char* argv[])
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bool sections = false;
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bool init = false;
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bool fini = false;
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bool objects = false;
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rld::set_cmdline (argc, argv);
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@ -537,6 +736,10 @@ main (int argc, char* argv[])
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sections = true;
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break;
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case 'O':
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objects = true;
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break;
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case '?':
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usage (3);
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break;
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@ -566,6 +769,7 @@ main (int argc, char* argv[])
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sections = true;
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init = true;
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fini = true;
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objects = true;
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}
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/*
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@ -589,11 +793,13 @@ main (int argc, char* argv[])
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*/
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rld::exeinfo::image exe (exe_name);
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std::cout << "exe: " << exe.exe.name ().full () << std::endl;
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std::cout << "exe: " << exe.exe.name ().full () << std::endl
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<< std::endl;
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/*
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* Generate the output.
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*/
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exe.output_compilation_unit (objects);
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if (sections)
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exe.output_sections ();
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if (init)
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@ -70,7 +70,7 @@ def build(bld):
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#
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# The list of modules.
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#
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modules = ['rld', 'elf', 'iberty']
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modules = ['rld', 'dwarf', 'elf', 'iberty']
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#
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# The list of defines
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