From e0fc5c3fcbf0d9e425483c20dc14cf9cedeac3f4 Mon Sep 17 00:00:00 2001 From: Simon Marchi Date: Thu, 2 Apr 2020 15:49:06 -0400 Subject: gdb: use bfd_get_section_contents to read section contents in is_linked_with_cygwin_dll The function is_linked_with_cygwin_dll currently uses gdb_bfd_map_section to get some section contents. This is not ideal because that memory, which is only used in this function, can't be released. Instead, it was suggested to use bfd_get_full_section_contents. However, bfd_get_full_section_contents returns a newly allocated buffer, which is not very practical to use with C++ automatic memory management constructs. I decided to make gdb_bfd_get_full_section_contents, a small alternative to bfd_get_full_section_contents. It is a small wrapper around bfd_get_section_contents which returns the full contents of the section in a gdb::byte_vector. gdb_bfd_get_full_section_contents could be used at many places that already allocate a vector of the size of the section and then call bfd_get_section_contents. I think these call sites can be updated over time. gdb/ChangeLog: * gdb_bfd.h: Include gdbsupport/byte-vector.h. (gdb_bfd_get_full_section_contents): New declaration. * gdb_bfd.c (gdb_bfd_get_full_section_contents): New function. * windows-tdep.c (is_linked_with_cygwin_dll): Use gdb_bfd_get_full_section_contents. --- gdb/gdb_bfd.c | 14 +++++++++++++- 1 file changed, 13 insertions(+), 1 deletion(-) (limited to 'gdb/gdb_bfd.c') diff --git a/gdb/gdb_bfd.c b/gdb/gdb_bfd.c index 5a6dee2..26262bf 100644 --- a/gdb/gdb_bfd.c +++ b/gdb/gdb_bfd.c @@ -926,7 +926,19 @@ gdb_bfd_requires_relocations (bfd *abfd) return gdata->needs_relocations; } - +/* See gdb_bfd.h. */ + +bool +gdb_bfd_get_full_section_contents (bfd *abfd, asection *section, + gdb::byte_vector *contents) +{ + bfd_size_type section_size = bfd_section_size (section); + + contents->resize (section_size); + + return bfd_get_section_contents (abfd, section, contents->data (), 0, + section_size); +} /* A callback for htab_traverse that prints a single BFD. */ -- cgit v1.1