PR10388 Support DW_OP_call_frame_cfa.

Depends on elfutils 0.142 cfi support.

* loc2c.h (c_translate_location): Take (optional) Dwarf_Op *cfa_ops.
* loc2c.c (translate): Recognize DW_OP_call_frame_cfa.
  (location_from_address): Take cfa_ops, examine fb_ops, if it is
  DW_OP_call_frame_cfa, pass cfa_ops to translate instead.
  (location_relative): Take cfa_ops, pass to location_from_address.
  (c_translate_location): Take cfa_ops, pass to location_from_address.
* loc2c-test.c (handle_variable): Take cfa_ops, pass to c_translate_location
  when needed.
  (main): Fetch cfa_ops, pass to handle_variable.
* dwflpp.h (struct dwflpp): Add new method get_cfa_ops.
* dwflpp.cxx: Include elfutils/version.h.
  (translate_location): Fetch cfa_ops when necessary.
  (get_cfa_ops): New method.

1 files changed, 4 insertions, 0 deletions

diff --git a/dwflpp.h b/dwflpp.h
index e0098b9b..a2c38ad8 100644
--- a/dwflpp.h
+++ b/dwflpp.h
@@ -376,6 +376,10 @@ private:
   int num_cached_scopes;
   Dwarf_Die *cached_scopes;
   int dwarf_getscopes_cached (Dwarf_Addr pc, Dwarf_Die **scopes);
+
+  // Returns the call frame address operations for the given program counter.
+  Dwarf_Op *get_cfa_ops (Dwarf_Addr pc);
+
 };
 
 #endif // DWFLPP_H