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Lu" To: binutils@sourceware.org Subject: [PATCH v3 3/9] elf: Pass need_layout to _bfd_elf_map_sections_to_segments Date: Tue, 11 Jan 2022 06:06:28 -0800 Message-Id: <20220111140634.2250914-4-hjl.tools@gmail.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220111140634.2250914-1-hjl.tools@gmail.com> References: <20220111140634.2250914-1-hjl.tools@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Spam-Status: No, score=-3028.7 required=5.0 tests=BAYES_00, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, FREEMAIL_FROM, GIT_PATCH_0, RCVD_IN_BARRACUDACENTRAL, RCVD_IN_DNSWL_NONE, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.4 X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on server2.sourceware.org X-BeenThere: binutils@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Binutils mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 11 Jan 2022 14:06:39 -0000 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 2441b3c0cd7..c4d2ef00d6b 100644 --- a/bfd/elf-bfd.h +++ b/bfd/elf-bfd.h @@ -2718,7 +2718,7 @@ 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 29ef9ddf8b9..bea413ec24e 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)) -- 2.34.1