Improve the find_nearest_line function for the MIPS target so that it tries harder...

	PR 22789
	* elfxx-mips.c (_bfd_mips_elf_find_nearest_line): If the dwarf
	functions failed to find the function name, try the generic elf
	find function instead.

diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 14ed147..4ce4fc0 100644 (file)
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,3 +1,10 @@
+2018-02-06  Miloš Stojanović  <milos.stojanovic@rt-rk.com>
+
+       PR 22789
+       * elfxx-mips.c (_bfd_mips_elf_find_nearest_line): If the dwarf
+       functions failed to find the function name, try the generic elf
+       find function instead.
+
 2018-02-06  Sergio Durigan Junior  <sergiodj@redhat.com>
 
        * coff-rs6000.c (xcoff_write_archive_contents_old): Use

diff --git a/bfd/elfxx-mips.c b/bfd/elfxx-mips.c
index ab65894..246d51c 100644 (file)
--- a/bfd/elfxx-mips.c
+++ b/bfd/elfxx-mips.c
@@ -12666,13 +12666,29 @@ _bfd_mips_elf_find_nearest_line (bfd *abfd, asymbol **symbols,
                                     line_ptr, discriminator_ptr,
                                     dwarf_debug_sections,
                                     ABI_64_P (abfd) ? 8 : 0,
-                                    &elf_tdata (abfd)->dwarf2_find_line_info))
-    return TRUE;
+                                    &elf_tdata (abfd)->dwarf2_find_line_info)
+      || _bfd_dwarf1_find_nearest_line (abfd, symbols, section, offset,
+                                       filename_ptr, functionname_ptr,
+                                       line_ptr))
+    {
+      /* PR 22789: If the function name or filename was not found through
+        the debug information, then try an ordinary lookup instead.  */
+      if ((functionname_ptr != NULL && *functionname_ptr == NULL)
+         || (filename_ptr != NULL && *filename_ptr == NULL))
+       {
+         /* Do not override already discovered names.  */
+         if (functionname_ptr != NULL && *functionname_ptr != NULL)
+           functionname_ptr = NULL;
 
-  if (_bfd_dwarf1_find_nearest_line (abfd, symbols, section, offset,
-                                    filename_ptr, functionname_ptr,
-                                    line_ptr))
-    return TRUE;
+         if (filename_ptr != NULL && *filename_ptr != NULL)
+           filename_ptr = NULL;
+
+         _bfd_elf_find_function (abfd, symbols, section, offset,
+                                 filename_ptr, functionname_ptr);
+       }
+
+      return TRUE;
+    }
 
   msec = bfd_get_section_by_name (abfd, ".mdebug");
   if (msec != NULL)