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Don't demangle Rust symbols by default, but allow linking to rust-demangle.

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The Rust compiler uses GCC C++ name mangling, but it has another layer of
encoding so abi::cxa_demangle doesn't produce great results. This patch
changes dump_syms to dump unmangled names by default so that consumers can
demangle them after-the-fact.

It also adds a tiny bit of support for linking against a Rust library I wrote
that can demangle Rust symbols nicely:
https://github.com/luser/rust-demangle-capi

BUG=

Change-Id: I63a425035ebb7ac516f067fed2aa782849ea9604
Reviewed-on: https://chromium-review.googlesource.com/402308
Reviewed-by: Mark Mentovai <mark@chromium.org>
This commit is contained in:
Ted Mielczarek 2016-10-24 15:16:28 -04:00
parent e6d1c032ba
commit 2ecb2baba8
9 changed files with 552 additions and 55 deletions
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4
src/common/dwarf_cu_to_module.cc
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@ -777,6 +777,10 @@ void DwarfCUToModule::SetLanguage(DwarfLanguage language) {
cu_context_->language = Language::Swift;
break;
case dwarf2reader::DW_LANG_Rust:
cu_context_->language = Language::Rust;
break;
// DWARF has no generic language code for assembly language; this is
// what the GNU toolchain uses.
case dwarf2reader::DW_LANG_Mips_Assembler: