[commit] dwarf2read.c (init_cutu_and_read_dies_no_follow): Minor cleanups

[Doug Evans <dje at google dot com>]

Hi.

fyi, I committed this.
Regression tested on amd64-linux.

2014-03-27  Doug Evans  <dje@google.com>

	* dwarf2read.c (init_cutu_and_read_dies_no_follow): Fix comments.
	Remove argument abbrev_section.  All callers updated.

diff --git a/gdb/dwarf2read.c b/gdb/dwarf2read.c
index cf95583..5238f4b 100644
--- a/gdb/dwarf2read.c
+++ b/gdb/dwarf2read.c
@@ -5515,10 +5515,9 @@ init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu,
   do_cleanups (cleanups);
 }
 
-/* Read CU/TU THIS_CU in section SECTION,
-   but do not follow DW_AT_GNU_dwo_name if present.
-   DWOP_FILE, if non-NULL, is the DWO/DWP file to read (the caller is assumed
-   to have already done the lookup to find the DWO/DWP file).
+/* Read CU/TU THIS_CU but do not follow DW_AT_GNU_dwo_name if present.
+   DWO_FILE, if non-NULL, is the DWO file to read (the caller is assumed
+   to have already done the lookup to find the DWO file).
 
    The caller is required to fill in THIS_CU->section, THIS_CU->offset, and
    THIS_CU->is_debug_types, but nothing else.
@@ -5534,7 +5533,6 @@ init_cutu_and_read_dies (struct dwarf2_per_cu_data *this_cu,
 
 static void
 init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu,
-				   struct dwarf2_section_info *abbrev_section,
 				   struct dwo_file *dwo_file,
 				   die_reader_func_ftype *die_reader_func,
 				   void *data)
@@ -5542,6 +5540,7 @@ init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu,
   struct objfile *objfile = dwarf2_per_objfile->objfile;
   struct dwarf2_section_info *section = this_cu->section;
   bfd *abfd = get_section_bfd_owner (section);
+  struct dwarf2_section_info *abbrev_section;
   struct dwarf2_cu cu;
   const gdb_byte *begin_info_ptr, *info_ptr;
   struct die_reader_specs reader;
@@ -5556,6 +5555,10 @@ init_cutu_and_read_dies_no_follow (struct dwarf2_per_cu_data *this_cu,
 
   gdb_assert (this_cu->cu == NULL);
 
+  abbrev_section = (dwo_file != NULL
+		    ? &dwo_file->sections.abbrev
+		    : get_abbrev_section_for_cu (this_cu));
+
   /* This is cheap if the section is already read in.  */
   dwarf2_read_section (objfile, section);
 
@@ -5603,10 +5606,7 @@ init_cutu_and_read_dies_simple (struct dwarf2_per_cu_data *this_cu,
 				die_reader_func_ftype *die_reader_func,
 				void *data)
 {
-  init_cutu_and_read_dies_no_follow (this_cu,
-				     get_abbrev_section_for_cu (this_cu),
-				     NULL,
-				     die_reader_func, data);
+  init_cutu_and_read_dies_no_follow (this_cu, NULL, die_reader_func, data);
 }
 
 /* Type Unit Groups.
@@ -9326,9 +9326,7 @@ create_dwo_cu (struct dwo_file *dwo_file)
       per_cu.offset.sect_off = info_ptr - section->buffer;
       per_cu.section = section;
 
-      init_cutu_and_read_dies_no_follow (&per_cu,
-					 &dwo_file->sections.abbrev,
-					 dwo_file,
+      init_cutu_and_read_dies_no_follow (&per_cu, dwo_file,
 					 create_dwo_cu_reader,
 					 &create_dwo_cu_data);