Read dwarf5 compilation unit headers.

Change-Id: Ia85b2fb7b3cb821ad353a0003223d8b8465e792d
Reviewed-on: https://chromium-review.googlesource.com/c/breakpad/breakpad/+/2265259
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Mark Mentovai <mark@chromium.org>

1 files changed, 21 insertions, 0 deletions

diff --git a/src/common/dwarf/dwarf2reader.h b/src/common/dwarf/dwarf2reader.h
index 593f5c0c..cd91b107 100644
--- a/src/common/dwarf/dwarf2reader.h
+++ b/src/common/dwarf/dwarf2reader.h
@@ -411,6 +411,21 @@ class CompilationUnit {
   // Reads the DWARF2/3 abbreviations for this compilation unit
   void ReadAbbrevs();
 
+  // Read the abbreviation offset for this compilation unit
+  size_t ReadAbbrevOffset(const uint8_t* headerptr);
+
+  // Read the address size for this compilation unit
+  size_t ReadAddressSize(const uint8_t* headerptr);
+
+  // Read the DWO id from a split or skeleton compilation unit header
+  size_t ReadDwoId(const uint8_t* headerptr);
+
+  // Read the type signature from a type or split type compilation unit header
+  size_t ReadTypeSignature(const uint8_t* headerptr);
+
+  // Read the DWO id from a split or skeleton compilation unit header
+  size_t ReadTypeOffset(const uint8_t* headerptr);
+
   // Processes a single DIE for this compilation unit and return a new
   // pointer just past the end of it
   const uint8_t *ProcessDIE(uint64_t dieoffset,
@@ -603,6 +618,12 @@ class CompilationUnit {
   // The value of the DW_AT_GNU_dwo_id attribute, if any.
   uint64_t dwo_id_;
 
+  // The value of the DW_AT_GNU_type_signature attribute, if any.
+  uint64_t type_signature_;
+
+  // The value of the DW_AT_GNU_type_offset attribute, if any.
+  size_t type_offset_;
+
   // The value of the DW_AT_GNU_dwo_name attribute, if any.
   const char* dwo_name_;