bfd: Add bfd_find_nearest_line_with_alt

bfd_find_nearest_line_with_alt functions like bfd_find_nearest_line with
the addition of a parameter for specifying the filename of a supplementary
debug file such as one referenced by .gnu_debugaltlink or .debug_sup.

This patch focuses on implementing bfd_find_nearest_line_with_alt
support for ELF/DWARF2 .gnu_debugaltlink. For other targets this
function simply sets the invalid_operation bfd_error.

1 files changed, 15 insertions, 0 deletions

diff --git a/bfd/syms.c b/bfd/syms.c
index b284cb2..7a454c5 100644
--- a/bfd/syms.c
+++ b/bfd/syms.c
@@ -1505,6 +1505,21 @@ _bfd_nosymbols_find_nearest_line
 }
 
 bool
+_bfd_nosymbols_find_nearest_line_with_alt
+    (bfd *abfd,
+     const char *alt_filename ATTRIBUTE_UNUSED,
+     asymbol **symbols ATTRIBUTE_UNUSED,
+     asection *section ATTRIBUTE_UNUSED,
+     bfd_vma offset ATTRIBUTE_UNUSED,
+     const char **filename_ptr ATTRIBUTE_UNUSED,
+     const char **functionname_ptr ATTRIBUTE_UNUSED,
+     unsigned int *line_ptr ATTRIBUTE_UNUSED,
+     unsigned int *discriminator_ptr ATTRIBUTE_UNUSED)
+{
+  return _bfd_bool_bfd_false_error (abfd);
+}
+
+bool
 _bfd_nosymbols_find_line (bfd *abfd,
 			  asymbol **symbols ATTRIBUTE_UNUSED,
 			  asymbol *symbol ATTRIBUTE_UNUSED,