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4 Commits

Author SHA1 Message Date
Nick Clifton
1a9ccd70f9 Fix the linker so that it will not silently generate ELF binaries with invalid program headers. Fix readelf to report such invalid binaries. 
PR ld/20815
bfd	* elf.c (elf_modify_segment_map): Allow empty LOAD segments if
	they contain the program headers.
	(_bfd_elf_map_sections_to_segments): If the linker created the
	PHDR segment then always attempt to include it in a LOAD segment.
	(assign_file_positions_for_non_load_sections): Allow LOAD segments
	to overlap PHDR segments.
	(phdr_sorter): New function.  Sorts program headers.
	(assign_file_positions_except_relocs): Sort the program headers
	before writing them out.  Issue an error if the PHDR segment is
	not covered by a LOAD segment, unless the backend allows it.
	* elf-bfd.h (struct elf_backend_data): Add
	elf_backend_allow_non_load_phdr.
	* elfxx-target.h (elf_backend_allow_non_load_phdr): Provide
	default definition that returns FALSE.
	(elfNN_bed): Initialise the elf_backend_allow_non_load_phdr
	field.
	* elf64-hppa.c (elf64_hppa_allow_non_load_phdr): New function.
	Returns TRUE.
	(elf_backend_allow_non_load_phdr): Define.
	* elf-m10300.c (_bfd_mn10300_elf_size_dynamic_sections): Do not
	place the interpreter string into the .interp section if the
	nointerp flag is set in the link info structure.
	* elf32-arc.c (elf_arc_size_dynamic_sections): Likewise.
	* elf32-score7.c (score_elf_final_link_relocate): Allow for the
	_gp symbol not being part of the output.

binutils* readelf.c (process_program_headers): Check PT_LOAD and PT_PHDR
	segments for validity.

ld	* ld.texinfo: Note that PT_TLS can be used as a segment type.
	* testsuite/ld-discard/discard.ld: Add space for program headers.
	* testsuite/ld-elf/flags1.ld: Likewise.
	* testsuite/ld-elf/maxpage3.t: Likewise.
	* testsuite/ld-elf/noload-1.t: Likewise.
	* testsuite/ld-elf/orphan.ld: Likewise.
	* testsuite/ld-elf/overlay.t: Likewise.
	* testsuite/ld-elf/pr14052.t: Likewise.
	* testsuite/ld-elf/pr19539.t: Likewise.
	* testsuite/ld-elf/provide-hidden-1.ld: Likewise.
	* testsuite/ld-elf/provide-hidden-s.ld: Likewise.
	* testsuite/ld-elf/weak-dyn-1.ld: Likewise.
	* testsuite/ld-i386/pr19539.t: Likewise.
	* testsuite/ld-scripts/defined.t: Likewise.
	* testsuite/ld-scripts/defined6.t: Likewise.
	* testsuite/ld-scripts/dynamic-sections.t: Likewise.
	* testsuite/ld-scripts/empty-aligned.t: Likewise.
	* testsuite/ld-scripts/provide-2.t: Likewise.
	* testsuite/ld-scripts/provide-4.t: Likewise.
	* testsuite/ld-vax-elf/plt-local.ld: Likewise.
	* testsuite/ld-x86-64/pr19539.t: Likewise.
	* testsuite/ld-elf/ehdr_start-missing.d: Do not initialise the
	dynamic linker.
	* testsuite/ld-elf/ehdr_start-weak.d: Likewise.
	* testsuite/ld-elf/elf.exp (pr14170, pr17068): Likewise.
	* testsuite/ld-elf/loadaddr1.d: Update expected readelf output.
	* testsuite/ld-elf/noload-2.d: Likewise.
	* testsuite/ld-powerpc/vxworks2.sd: Likewise.
	* testsuite/ld-scripts/phdrs3a.d: Likewise.
	* testsuite/ld-scripts/size-2.d: Likewise.
	* testsuite/ld-elf/group.ld: Add program headers.
	* testsuite/ld-elf/overlay.d: Skip for SPU.
	* testsuite/ld-elf/flags1.d: Skip for RX.
	* testsuite/ld-elf/pr19162.d: Skip for HPPA64.
	* testsuite/ld-elf/pr19539.d: Skip for ALPHA.
	* testsuite/ld-scripts/empty-orphan.t: Update program headers.
	* testsuite/ld-scripts/size-2.t: Likewise.
 2016-11-23 11:10:39 +00:00
Alan Modra
74541ad4c0 bfd/ 
* elf-bfd.h (struct elf_link_hash_table): Reorder.  Add
	text_index_section and data_index_section.
	(struct elf_backend_data): Add elf_backend_init_index_section.
	(_bfd_elf_init_1_index_section): Declare.
	(_bfd_elf_init_2_index_sections): Declare.
	* elfxx-target.h (elf_backend_init_index_section): Define.
	(elfNN_bed): Init new field.
	* elflink.c (_bfd_elf_link_omit_section_dynsym): Keep first tls
	section and text_index_section plus data_index_section.
	(_bfd_elf_link_renumber_dynsyms): Clear dynindx on omitted sections.
	(_bfd_elf_init_1_index_section): New function.
	(_bfd_elf_init_2_index_sections): New function.
	(bfd_elf_size_dynsym_hash_dynstr): Call elf_backend_init_index_section.
	(elf_link_input_bfd): When emitting relocs, use text_index_section
	and data_index_section for removed sections.
	* elf-m10300.c (elf_backend_omit_section_dynsym): Define.
	* elf32-i386.c: Likewise.
	* elf32-m32r.c: Likewise.
	* elf32-sh.c: Likewise.
	* elf32-xstormy16.c: Likewise.
	* elf32-xtensa.c: Likewise.
	* elf64-alpha.c: Likewise.
	* elf64-hppa.c: Likewise.
	* elf64-mmix.c: Likewise.
	* elf64-sh64.c: Likewise.
	* elfxx-ia64.c: Likewise.
	* elf32-arm.c (elf32_arm_final_link_relocate): Use text_index_section
	and data_index_section sym for relocs against sections with no dynamic
	section sym.
	(elf_backend_init_index_section): Define.
	* elf32-cris.c: Similarly.
	* elf32-hppa.c: Similarly.
	* elf32-i370.c: Similarly.
	* elf32-m68k.c: Similarly.
	* elf32-mips.c: Similarly.
	* elf32-ppc.c: Similarly.
	* elf32-s390.c: Similarly.
	* elf32-sparc.c: Similarly.
	* elf32-vax.c: Similarly.
	* elf64-mips.c: Similarly.
	* elf64-ppc.c: Similarly.
	* elf64-s390.c: Similarly.
	* elf64-sparc.c: Similarly.
	* elf64-x86-64.c: Similarly.
	* elfn32-mips.c: Similarly.
	* elfxx-mips.c: Similarly.
	* elfxx-sparc.c: Similarly.
	* linker.c (fix_syms): Base symbols in removed sections on
	previous section in preference to using absolute section.

ld/
	* ldlang.c (strip_excluded_output_sections): Do strip sections
	that define syms, but don't ignore them.
	* ld.texinfo (Output Section Discarding): Revise.
	* emultempl/armcoff.em (gld${EMULATION_NAME}_finish): Always call
	finish_default.

ld/testsuite/
	Update for section sym changes.
 2006-10-17 13:41:49 +00:00
Alan Modra
c6f90868f6 * ld-scripts/empty-orphan.t: Discard .reginfo. 
* ld-scripts/empty-orphan.d: Update.
 2006-05-19 06:10:03 +00:00
Bob Wilson
de7f8cc8e0 ld/ChangeLog: 
* ldlang.c (IGNORE_SECTION): Remove check for zero size.
        (lang_check_section_addresses): Ignore zero size sections here.
ld/testsuite/ChangeLog:
        * ld-scripts/empty-orphan.d, ld-scripts/empty-orphan.exp,
        ld-scripts/empty-orphan.s, ld-scripts/emtpy-orphan.t: New test.
 2005-03-17 16:20:39 +00:00