Add dwarf2_section_info::read_string method

This moves a string-reading function to be a method on
dwarf2_section_info, and then updates the users.

gdb/ChangeLog
2020-03-26  Tom Tromey  <tom@tromey.com>

	* dwarf2/section.h (struct dwarf2_section_info) <read_string>: New
	method.
	* dwarf2/section.c: New method.  From
	read_indirect_string_at_offset_from.
	* dwarf2/read.c (mapped_debug_names::namei_to_name): Update.
	(read_indirect_string_at_offset_from): Move to section.c.
	(read_indirect_string_at_offset): Rewrite.
	(read_indirect_line_string_at_offset): Remove.
	(read_indirect_string, read_indirect_line_string)
	(dwarf_decode_macro_bytes): Update.

diff --git a/gdb/ChangeLog b/gdb/ChangeLog
index 236f552024a8f8f1ab0e1fa5c6268bbabf8ffc22..15e65eb2e02bc70eed6d36c64f7fe6791570b229 100644 (file)
--- a/gdb/ChangeLog
+++ b/gdb/ChangeLog
@@ -1,3 +1,16 @@
+2020-03-26  Tom Tromey  <tom@tromey.com>
+
+       * dwarf2/section.h (struct dwarf2_section_info) <read_string>: New
+       method.
+       * dwarf2/section.c: New method.  From
+       read_indirect_string_at_offset_from.
+       * dwarf2/read.c (mapped_debug_names::namei_to_name): Update.
+       (read_indirect_string_at_offset_from): Move to section.c.
+       (read_indirect_string_at_offset): Rewrite.
+       (read_indirect_line_string_at_offset): Remove.
+       (read_indirect_string, read_indirect_line_string)
+       (dwarf_decode_macro_bytes): Update.
+
 2020-03-26  Tom Tromey  <tom@tromey.com>
 
        * dwarf2/section.h (struct dwarf2_section_info)

diff --git a/gdb/dwarf2/read.c b/gdb/dwarf2/read.c
index f284d623081c661051204a40d8a0217fa0e2e168..fab5b94f0a79ce373e59de9979879de3ac7d76ba 100644 (file)
--- a/gdb/dwarf2/read.c
+++ b/gdb/dwarf2/read.c
@@ -1256,8 +1256,7 @@ static const char *read_indirect_line_string
    const struct comp_unit_head *, unsigned int *);
 
 static const char *read_indirect_string_at_offset
-  (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd,
-   LONGEST str_offset);
+  (struct dwarf2_per_objfile *dwarf2_per_objfile, LONGEST str_offset);
 
 static CORE_ADDR read_addr_index_from_leb128 (struct dwarf2_cu *,
                                              const gdb_byte *,
@@ -5171,8 +5170,8 @@ mapped_debug_names::namei_to_name (uint32_t namei) const
                                 + namei * offset_size),
                                offset_size,
                                dwarf5_byte_order);
-  return read_indirect_string_at_offset
-    (dwarf2_per_objfile, dwarf2_per_objfile->objfile->obfd, namei_string_offs);
+  return read_indirect_string_at_offset (dwarf2_per_objfile,
+                                        namei_string_offs);
 }
 
 /* Find a slot in .debug_names for the object named NAME.  If NAME is
@@ -18770,52 +18769,14 @@ read_checked_initial_length_and_offset (bfd *abfd, const gdb_byte *buf,
   return length;
 }
 
-/* Return pointer to string at section SECT offset STR_OFFSET with error
-   reporting strings FORM_NAME and SECT_NAME.  */
-
-static const char *
-read_indirect_string_at_offset_from (struct objfile *objfile,
-                                    bfd *abfd, LONGEST str_offset,
-                                    struct dwarf2_section_info *sect,
-                                    const char *form_name,
-                                    const char *sect_name)
-{
-  sect->read (objfile);
-  if (sect->buffer == NULL)
-    error (_("%s used without %s section [in module %s]"),
-          form_name, sect_name, bfd_get_filename (abfd));
-  if (str_offset >= sect->size)
-    error (_("%s pointing outside of %s section [in module %s]"),
-          form_name, sect_name, bfd_get_filename (abfd));
-  gdb_assert (HOST_CHAR_BIT == 8);
-  if (sect->buffer[str_offset] == '\0')
-    return NULL;
-  return (const char *) (sect->buffer + str_offset);
-}
-
 /* Return pointer to string at .debug_str offset STR_OFFSET.  */
 
 static const char *
 read_indirect_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile,
-                               bfd *abfd, LONGEST str_offset)
-{
-  return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile,
-                                             abfd, str_offset,
-                                             &dwarf2_per_objfile->str,
-                                             "DW_FORM_strp", ".debug_str");
-}
-
-/* Return pointer to string at .debug_line_str offset STR_OFFSET.  */
-
-static const char *
-read_indirect_line_string_at_offset (struct dwarf2_per_objfile *dwarf2_per_objfile,
-                                    bfd *abfd, LONGEST str_offset)
+                               LONGEST str_offset)
 {
-  return read_indirect_string_at_offset_from (dwarf2_per_objfile->objfile,
-                                             abfd, str_offset,
-                                             &dwarf2_per_objfile->line_str,
-                                             "DW_FORM_line_strp",
-                                             ".debug_line_str");
+  return dwarf2_per_objfile->str.read_string (dwarf2_per_objfile->objfile,
+                                             str_offset, "DW_FORM_strp");
 }
 
 /* Return pointer to string at .debug_str offset as read from BUF.
@@ -18830,7 +18791,7 @@ read_indirect_string (struct dwarf2_per_objfile *dwarf2_per_objfile, bfd *abfd,
 {
   LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr);
 
-  return read_indirect_string_at_offset (dwarf2_per_objfile, abfd, str_offset);
+  return read_indirect_string_at_offset (dwarf2_per_objfile, str_offset);
 }
 
 /* Return pointer to string at .debug_line_str offset as read from BUF.
@@ -18845,8 +18806,9 @@ read_indirect_line_string (struct dwarf2_per_objfile *dwarf2_per_objfile,
 {
   LONGEST str_offset = cu_header->read_offset (abfd, buf, bytes_read_ptr);
 
-  return read_indirect_line_string_at_offset (dwarf2_per_objfile, abfd,
-                                             str_offset);
+  return dwarf2_per_objfile->line_str.read_string (dwarf2_per_objfile->objfile,
+                                                  str_offset,
+                                                  "DW_FORM_line_strp");
 }
 
 /* Given index ADDR_INDEX in .debug_addr, fetch the value.
@@ -23549,7 +23511,7 @@ dwarf_decode_macro_bytes (struct dwarf2_per_objfile *dwarf2_per_objfile,
                  }
                else
                  body = read_indirect_string_at_offset (dwarf2_per_objfile,
-                                                        abfd, str_offset);
+                                                        str_offset);
              }
 
            is_define = (macinfo_type == DW_MACRO_define

diff --git a/gdb/dwarf2/section.c b/gdb/dwarf2/section.c
index 9714368a5d29b820f4149f163553677b4787fbb9..776617911a2ad2a7eeb4e0370906e65f251a51a2 100644 (file)
--- a/gdb/dwarf2/section.c
+++ b/gdb/dwarf2/section.c
@@ -187,3 +187,20 @@ dwarf2_section_info::read (struct objfile *objfile)
             bfd_section_name (sectp), bfd_get_filename (abfd));
     }
 }
+
+const char *
+dwarf2_section_info::read_string (struct objfile *objfile, LONGEST str_offset,
+                                 const char *form_name)
+{
+  read (objfile);
+  if (buffer == NULL)
+    error (_("%s used without %s section [in module %s]"),
+          form_name, get_name (), get_file_name ());
+  if (str_offset >= size)
+    error (_("%s pointing outside of %s section [in module %s]"),
+          form_name, get_name (), get_file_name ());
+  gdb_assert (HOST_CHAR_BIT == 8);
+  if (buffer[str_offset] == '\0')
+    return NULL;
+  return (const char *) (buffer + str_offset);
+}

diff --git a/gdb/dwarf2/section.h b/gdb/dwarf2/section.h
index 555efecacd650a6f3e1ae2b9878f1f7929872919..02f42df78c6f662665376175e24b87c209233938 100644 (file)
--- a/gdb/dwarf2/section.h
+++ b/gdb/dwarf2/section.h
@@ -98,6 +98,11 @@ struct dwarf2_section_info
      buffer.  */
   void overflow_complaint () const;
 
+  /* Return pointer to string in this section at offset STR_OFFSET
+     with error reporting string FORM_NAME.  */
+  const char *read_string (struct objfile *objfile, LONGEST str_offset,
+                          const char *form_name);
+
   union
   {
     /* If this is a real section, the bfd section.  */