From e2cbf4df83fe57892a6aaedf737b84baa6321fa7 Mon Sep 17 00:00:00 2001 From: "H.J. Lu" Date: Thu, 6 Jan 2022 08:45:16 -0800 Subject: [PATCH] elf: Pass need_layout to _bfd_elf_map_sections_to_segments On some targets, the DT_RELR section size can be computed only after all symbols addresses can be determined. Update ldelf_map_segments to pass need_layout to _bfd_elf_map_sections_to_segments which will size DT_RELR section and set need_layout to true if the DT_RELR section size is changed. bfd/ * elf-bfd.h (_bfd_elf_map_sections_to_segments): Add a bool pointer argument. * elf.c (_bfd_elf_map_sections_to_segments): Add a bool pointer argument to indicate if section layout needs update. (assign_file_positions_for_load_sections): Pass NULL to _bfd_elf_map_sections_to_segments. * elflink.c (_bfd_elf_strip_zero_sized_dynamic_sections): Pass NULL to _bfd_elf_map_sections_to_segments. ld/ * ldelfgen.c (ldelf_map_segments): Pass &need_layout to _bfd_elf_map_sections_to_segments. --- bfd/elf-bfd.h | 2 +- bfd/elf.c | 9 ++++++--- bfd/elflink.c | 3 ++- ld/ldelfgen.c | 3 ++- 4 files changed, 11 insertions(+), 6 deletions(-) diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h index 81f8fd47db7..0d9c7644485 100644 --- a/bfd/elf-bfd.h +++ b/bfd/elf-bfd.h @@ -2716,7 +2716,7 @@ extern struct elf_segment_map * _bfd_elf_make_dynamic_segment (bfd *, asection *); extern bool _bfd_elf_map_sections_to_segments - (bfd *, struct bfd_link_info *); + (bfd *, struct bfd_link_info *, bool *); extern bool _bfd_elf_is_function_type (unsigned int); diff --git a/bfd/elf.c b/bfd/elf.c index ef0d18105ba..8b866b63e18 100644 --- a/bfd/elf.c +++ b/bfd/elf.c @@ -4609,10 +4609,13 @@ elf_modify_segment_map (bfd *abfd, #define IS_TBSS(s) \ ((s->flags & (SEC_THREAD_LOCAL | SEC_LOAD)) == SEC_THREAD_LOCAL) -/* Set up a mapping from BFD sections to program segments. */ +/* Set up a mapping from BFD sections to program segments. Update + NEED_LAYOUT if the section layout is changed. */ bool -_bfd_elf_map_sections_to_segments (bfd *abfd, struct bfd_link_info *info) +_bfd_elf_map_sections_to_segments (bfd *abfd, + struct bfd_link_info *info, + bool *need_layout ATTRIBUTE_UNUSED) { unsigned int count; struct elf_segment_map *m; @@ -5416,7 +5419,7 @@ assign_file_positions_for_load_sections (bfd *abfd, unsigned int opb = bfd_octets_per_byte (abfd, NULL); if (link_info == NULL - && !_bfd_elf_map_sections_to_segments (abfd, link_info)) + && !_bfd_elf_map_sections_to_segments (abfd, link_info, NULL)) return false; alloc = 0; diff --git a/bfd/elflink.c b/bfd/elflink.c index f5e3fd53c5d..46bff277149 100644 --- a/bfd/elflink.c +++ b/bfd/elflink.c @@ -3676,7 +3676,8 @@ _bfd_elf_strip_zero_sized_dynamic_sections (struct bfd_link_info *info) { /* Regenerate program headers. */ elf_seg_map (info->output_bfd) = NULL; - return _bfd_elf_map_sections_to_segments (info->output_bfd, info); + return _bfd_elf_map_sections_to_segments (info->output_bfd, info, + NULL); } return true; diff --git a/ld/ldelfgen.c b/ld/ldelfgen.c index 5c033bbfbe0..58b37c65bc9 100644 --- a/ld/ldelfgen.c +++ b/ld/ldelfgen.c @@ -304,7 +304,8 @@ ldelf_map_segments (bool need_layout) if (lang_phdr_list == NULL) elf_seg_map (link_info.output_bfd) = NULL; if (!_bfd_elf_map_sections_to_segments (link_info.output_bfd, - &link_info)) + &link_info, + &need_layout)) einfo (_("%F%P: map sections to segments failed: %E\n")); if (phdr_size != elf_program_header_size (link_info.output_bfd)) -- 2.30.2