[PATCH 4/6] Code cleanup: dwarf2_initialize_objfile return value

[Jan Kratochvil <jan.kratochvil@redhat.com>]

Hi,

dwarf2_initialize_objfile was returning boolean whether it is psymtabs or
.gdb_index while now it needs to return also whether it is .debug_names.


Jan


gdb/ChangeLog
2017-05-26  Jan Kratochvil  <jan.kratochvil@redhat.com>

	* defs.h (elf_sym_fns_lazy_psyms, elf_sym_fns_gdb_index): Move here
	declarations from elfread.c.
	(dwarf2_initialize_objfile): Change return value.
	* elfread.c (elf_sym_fns_lazy_psyms, elf_sym_fns_gdb_index): Move these
	declarations to defs.h.
	(elf_symfile_read): Adjust dwarf2_initialize_objfile caller.
	* symfile.h (dwarf2_initialize_objfile): Change return type.
---
 gdb/defs.h       |    5 +++++
 gdb/dwarf2read.c |    8 ++++----
 gdb/elfread.c    |   11 +++--------
 gdb/symfile.h    |    2 +-
 4 files changed, 13 insertions(+), 13 deletions(-)

diff --git a/gdb/defs.h b/gdb/defs.h
index a0b586f..78f98e0 100644
--- a/gdb/defs.h
+++ b/gdb/defs.h
@@ -724,6 +724,11 @@ extern int (*deprecated_ui_load_progress_hook) (const char *section,
 extern void initialize_progspace (void);
 extern void initialize_inferiors (void);
 
+// From elfread.c
+
+extern const struct sym_fns elf_sym_fns_lazy_psyms;
+extern const struct sym_fns elf_sym_fns_gdb_index;
+
 /* * Special block numbers */
 
 enum block_enum
diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index 4f5eb08..e7c3643 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -4354,7 +4354,7 @@ const struct quick_symbol_functions dwarf2_gdb_index_functions =
 /* Initialize for reading DWARF for this objfile.  Return 0 if this
    file will use psymtabs, or 1 if using the GNU index.  */
 
-int
+const sym_fns &
 dwarf2_initialize_objfile (struct objfile *objfile)
 {
   /* If we're about to read full symbols, don't bother with the
@@ -4383,13 +4383,13 @@ dwarf2_initialize_objfile (struct objfile *objfile)
       /* Return 1 so that gdb sees the "quick" functions.  However,
 	 these functions will be no-ops because we will have expanded
 	 all symtabs.  */
-      return 1;
+      return elf_sym_fns_gdb_index;
     }
 
   if (dwarf2_read_index (objfile))
-    return 1;
+    return elf_sym_fns_gdb_index;
 
-  return 0;
+  return elf_sym_fns_lazy_psyms;
 }
 
 \f
diff --git a/gdb/elfread.c b/gdb/elfread.c
index fba2026..9ae0432 100644
--- a/gdb/elfread.c
+++ b/gdb/elfread.c
@@ -50,10 +50,6 @@
 
 extern void _initialize_elfread (void);
 
-/* Forward declarations.  */
-extern const struct sym_fns elf_sym_fns_gdb_index;
-extern const struct sym_fns elf_sym_fns_lazy_psyms;
-
 /* The struct elfinfo is available only during ELF symbol table and
    psymtab reading.  It is destroyed at the completion of psymtab-reading.
    It's local to elf_symfile_read.  */
@@ -1237,10 +1233,7 @@ elf_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
 	 information present in OBJFILE.  If there is such debug info present
 	 never use .gdb_index.  */
 
-      if (!objfile_has_partial_symbols (objfile)
-	  && dwarf2_initialize_objfile (objfile))
-	objfile_set_sym_fns (objfile, &elf_sym_fns_gdb_index);
-      else
+      if (objfile_has_partial_symbols (objfile))
 	{
 	  /* It is ok to do this even if the stabs reader made some
 	     partial symbols, because OBJF_PSYMTABS_READ has not been
@@ -1248,6 +1241,8 @@ elf_symfile_read (struct objfile *objfile, symfile_add_flags symfile_flags)
 	     when needed.  */
 	  objfile_set_sym_fns (objfile, &elf_sym_fns_lazy_psyms);
 	}
+      else
+	objfile_set_sym_fns (objfile, &dwarf2_initialize_objfile (objfile));
     }
   /* If the file has its own symbol tables it has no separate debug
      info.  `.dynsym'/`.symtab' go to MSYMBOLS, `.debug_info' goes to
diff --git a/gdb/symfile.h b/gdb/symfile.h
index ab536e8..8725796 100644
--- a/gdb/symfile.h
+++ b/gdb/symfile.h
@@ -625,7 +625,7 @@ extern void dwarf2_get_section_info (struct objfile *,
 				     asection **, const gdb_byte **,
 				     bfd_size_type *);
 
-extern int dwarf2_initialize_objfile (struct objfile *);
+extern const sym_fns &dwarf2_initialize_objfile (struct objfile *);
 extern void dwarf2_build_psymtabs (struct objfile *);
 extern void dwarf2_build_frame_info (struct objfile *);