gdb: add target_ops::supports_displaced_step

[deliverable/binutils-gdb.git] / gold / dwarf_reader.h

diff --git a/gold/dwarf_reader.h b/gold/dwarf_reader.h
index 9cf22ffb294b0c054973e38b27ed59871674482f..9b140e7878ebc2eda9f05ebfb73706a625b8427b 100644 (file)
--- a/gold/dwarf_reader.h
+++ b/gold/dwarf_reader.h
@@ -1,6 +1,6 @@
 // dwarf_reader.h -- parse dwarf2/3 debug information for gold  -*- C++ -*-
 
-// Copyright 2007, 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc.
+// Copyright (C) 2007-2020 Free Software Foundation, Inc.
 // Written by Ian Lance Taylor <iant@google.com>.
 
 // This file is part of gold.
@@ -399,8 +399,9 @@ class Dwarf_pubnames_table
  public:
   Dwarf_pubnames_table(Dwarf_info_reader* dwinfo, bool is_pubtypes)
     : dwinfo_(dwinfo), buffer_(NULL), buffer_end_(NULL), owns_buffer_(false),
-      offset_size_(0), pinfo_(NULL), is_pubtypes_(is_pubtypes),
-      output_section_offset_(0), unit_length_(0), cu_offset_(0)
+      offset_size_(0), pinfo_(NULL), end_of_table_(NULL),
+      is_pubtypes_(is_pubtypes), is_gnu_style_(false),
+      unit_length_(0), cu_offset_(0)
   { }
 
   ~Dwarf_pubnames_table()
@@ -430,9 +431,10 @@ class Dwarf_pubnames_table
   subsection_size()
   { return this->unit_length_; }
 
-  // Read the next name from the set.
+  // Read the next name from the set.  If the pubname table is gnu-style,
+  // FLAG_BYTE is set to the high-byte of a gdb_index version 7 cu_index.
   const char*
-  next_name();
+  next_name(uint8_t* flag_byte);
 
  private:
   // The Dwarf_info_reader, for reading data.
@@ -446,13 +448,13 @@ class Dwarf_pubnames_table
   unsigned int offset_size_;
   // The current position within the buffer.
   const unsigned char* pinfo_;
+  // The end of the current pubnames table.
+  const unsigned char* end_of_table_;
   // TRUE if this is a .debug_pubtypes section.
   bool is_pubtypes_;
-  // For incremental update links, this will hold the offset of the
-  // input section within the output section.  Offsets read from
-  // relocated data will be relative to the output section, and need
-  // to be corrected before reading data from the input section.
-  uint64_t output_section_offset_;
+  // Gnu-style pubnames table. This style has an extra flag byte between the
+  // offset and the name, and is used for generating version 7 of gdb-index.
+  bool is_gnu_style_;
   // Fields read from the header.
   uint64_t unit_length_;
   off_t cu_offset_;
@@ -697,8 +699,8 @@ class Dwarf_info_reader
       symtab_size_(symtab_size), shndx_(shndx), reloc_shndx_(reloc_shndx),
       reloc_type_(reloc_type), abbrev_shndx_(0), string_shndx_(0),
       buffer_(NULL), buffer_end_(NULL), cu_offset_(0), cu_length_(0),
-      offset_size_(0), address_size_(0), cu_version_(0), type_signature_(0),
-      type_offset_(0), abbrev_table_(), ranges_table_(this),
+      offset_size_(0), address_size_(0), cu_version_(0),
+      abbrev_table_(), ranges_table_(this),
       reloc_mapper_(NULL), string_buffer_(NULL), string_buffer_end_(NULL),
       owns_string_buffer_(false), string_output_section_offset_(0)
   { }
@@ -762,6 +764,13 @@ class Dwarf_info_reader
   address_size() const
   { return this->address_size_; }
 
+  // Return the size of a DW_FORM_ref_addr.
+  // In DWARF v2, this was the size of an address; in DWARF v3 and later,
+  // it is the size of an DWARF offset.
+  unsigned int
+  ref_addr_size() const
+  { return this->cu_version_ > 2 ? this->offset_size_ : this->address_size_; }
+
   // Set the section index of the .debug_abbrev section.
   // We use this if there are no relocations for the .debug_info section.
   // If not set, the code parse() routine will search for the section by name.
@@ -895,10 +904,6 @@ class Dwarf_info_reader
   unsigned int address_size_;
   // Compilation unit version number.
   unsigned int cu_version_;
-  // Type signature (for a type unit).
-  uint64_t type_signature_;
-  // Offset from the type unit header to the type DIE (for a type unit).
-  off_t type_offset_;
   // Abbreviations table for current compilation unit.
   Dwarf_abbrev_table abbrev_table_;
   // Ranges table for the current compilation unit.
@@ -1065,7 +1070,8 @@ class Sized_dwarf_line_info : public Dwarf_line_info
     off_t total_length;
     int version;
     off_t prologue_length;
-    int min_insn_length; // insn stands for instructin
+    int min_insn_length; // insn stands for instruction
+    int max_ops_per_insn; // Added in DWARF-4.
     bool default_is_stmt; // stmt stands for statement
     signed char line_base;
     int line_range;