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authorMark Mentovai <mark@chromium.org>2016-09-23 14:22:42 -0400
committerMark Mentovai <mark@chromium.org>2016-09-23 14:22:42 -0400
commit7398ce15b79daf038cd07fbae4e37e183e99788d (patch)
treec6baf6108bf8de9d23f9f574a8102196621b98fd /src/common/dwarf_cu_to_module.h
parentgenerate a repo manifest from the DEPS file (diff)
downloadbreakpad-7398ce15b79daf038cd07fbae4e37e183e99788d.tar.xz
Initial support for dumping DWARF corresponding to Swift code
The DWARF data for Swift code has a top-level DW_TAG_module DIE as the child of the DW_TAG_compile_unit DIE and the parent of the DW_TAG_subprogram DIEs that dump_syms uses to locate functions. dump_syms needs to process DW_TAG_module DIEs as introducing nested scopes to make it work with Swift. This also reworks demangling to be language-specific, so that the C++ demangler isn't invoked when processing Swift code. The DWARF data for Swift code presents its mangled names in the same form as used for C++ (DW_AT_MIPS_linkage_name or DW_AT_linkage_name) but the mangling is Swift-specific (beginning with _T instead of _Z). There is no programmatic interface to a Swift name demangler as an analogue to C++'s __cxa_demangle(), so mangled Swift names are exposed as-is. Xcode's "xcrun swift-demangle" can be used to post-process these mangled Swift names on macOS. Support for mangled names presented in a DW_AT_linkage_name attribute, as used by DWARF 4, is added. This supersedes the earlier use of DW_AT_MIPS_linkage_name. BUG=google-breakpad:702,google-breakpad:715 R=ted.mielczarek@gmail.com Review URL: https://codereview.chromium.org/2147523005 .
Diffstat (limited to 'src/common/dwarf_cu_to_module.h')
-rw-r--r--src/common/dwarf_cu_to_module.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/common/dwarf_cu_to_module.h b/src/common/dwarf_cu_to_module.h
index fca92710..a36b82b0 100644
--- a/src/common/dwarf_cu_to_module.h
+++ b/src/common/dwarf_cu_to_module.h
@@ -202,7 +202,7 @@ class DwarfCUToModule: public dwarf2reader::RootDIEHandler {
virtual void UnnamedFunction(uint64 offset);
// __cxa_demangle() failed to demangle INPUT.
- virtual void DemangleError(const string &input, int error);
+ virtual void DemangleError(const string &input);
// The DW_FORM_ref_addr at OFFSET to TARGET was not handled because
// FilePrivate did not retain the inter-CU specification data.