102 lines
3.1 KiB
ReStructuredText
102 lines
3.1 KiB
ReStructuredText
|
llvm-cxxmap - Mangled name remapping tool
|
||
|
|
=========================================
|
||
|
|
|
||
|
|
.. program:: llvm-cxxmap
|
||
|
|
|
||
|
|
SYNOPSIS
|
||
|
|
--------
|
||
|
|
|
||
|
|
:program:`llvm-cxxmap` [*options*] *symbol-file-1* *symbol-file-2*
|
||
|
|
|
||
|
|
DESCRIPTION
|
||
|
|
-----------
|
||
|
|
|
||
|
|
The :program:`llvm-cxxmap` tool performs fuzzy matching of C++ mangled names,
|
||
|
|
based on a file describing name components that should be considered equivalent.
|
||
|
|
|
||
|
|
The symbol files should contain a list of C++ mangled names (one per line).
|
||
|
|
Blank lines and lines starting with ``#`` are ignored. The output is a list
|
||
|
|
of pairs of equivalent symbols, one per line, of the form
|
||
|
|
|
||
|
|
.. code-block:: none
|
||
|
|
|
||
|
|
<symbol-1> <symbol-2>
|
||
|
|
|
||
|
|
where ``<symbol-1>`` is a symbol from *symbol-file-1* and ``<symbol-2>`` is
|
||
|
|
a symbol from *symbol-file-2*. Mappings for which the two symbols are identical
|
||
|
|
are omitted.
|
||
|
|
|
||
|
|
OPTIONS
|
||
|
|
-------
|
||
|
|
|
||
|
|
.. program:: llvm-cxxmap
|
||
|
|
|
||
|
|
.. option:: -remapping-file=file, -r=file
|
||
|
|
|
||
|
|
Specify a file containing a list of equivalence rules that should be used
|
||
|
|
to determine whether two symbols are equivalent. Required.
|
||
|
|
See :ref:`remapping-file`.
|
||
|
|
|
||
|
|
.. option:: -output=file, -o=file
|
||
|
|
|
||
|
|
Specify a file to write the list of matched names to. If unspecified, the
|
||
|
|
list will be written to stdout.
|
||
|
|
|
||
|
|
.. option:: -Wambiguous
|
||
|
|
|
||
|
|
Produce a warning if there are multiple equivalent (but distinct) symbols in
|
||
|
|
*symbol-file-2*.
|
||
|
|
|
||
|
|
.. option:: -Wincomplete
|
||
|
|
|
||
|
|
Produce a warning if *symbol-file-1* contains a symbol for which there is no
|
||
|
|
equivalent symbol in *symbol-file-2*.
|
||
|
|
|
||
|
|
.. _remapping-file:
|
||
|
|
|
||
|
|
REMAPPING FILE
|
||
|
|
--------------
|
||
|
|
|
||
|
|
The remapping file is a text file containing lines of the form
|
||
|
|
|
||
|
|
.. code-block:: none
|
||
|
|
|
||
|
|
fragmentkind fragment1 fragment2
|
||
|
|
|
||
|
|
where ``fragmentkind`` is one of ``name``, ``type``, or ``encoding``,
|
||
|
|
indicating whether the following mangled name fragments are
|
||
|
|
<`name <http://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangle.name>`_>s,
|
||
|
|
<`type <http://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangle.type>`_>s, or
|
||
|
|
<`encoding <http://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangle.encoding>`_>s,
|
||
|
|
respectively.
|
||
|
|
Blank lines and lines starting with ``#`` are ignored.
|
||
|
|
|
||
|
|
Unmangled C names can be expressed as an ``encoding`` that is a (length-prefixed)
|
||
|
|
<`source-name <http://itanium-cxx-abi.github.io/cxx-abi/abi.html#mangle.source-name>`_>:
|
||
|
|
|
||
|
|
.. code-block:: none
|
||
|
|
|
||
|
|
# C function "void foo_bar()" is remapped to C++ function "void foo::bar()".
|
||
|
|
encoding 7foo_bar _Z3foo3barv
|
||
|
|
|
||
|
|
For convenience, built-in <substitution>s such as ``St`` and ``Ss``
|
||
|
|
are accepted as <name>s (even though they technically are not <name>s).
|
||
|
|
|
||
|
|
For example, to specify that ``absl::string_view`` and ``std::string_view``
|
||
|
|
should be treated as equivalent, the following remapping file could be used:
|
||
|
|
|
||
|
|
.. code-block:: none
|
||
|
|
|
||
|
|
# absl::string_view is considered equivalent to std::string_view
|
||
|
|
type N4absl11string_viewE St17basic_string_viewIcSt11char_traitsIcEE
|
||
|
|
|
||
|
|
# std:: might be std::__1:: in libc++ or std::__cxx11:: in libstdc++
|
||
|
|
name St St3__1
|
||
|
|
name St St7__cxx11
|
||
|
|
|
||
|
|
.. note::
|
||
|
|
|
||
|
|
Symbol remapping is currently only supported for C++ mangled names
|
||
|
|
following the Itanium C++ ABI mangling scheme. This covers all C++ targets
|
||
|
|
supported by Clang other than Windows targets.
|