aboutsummaryrefslogtreecommitdiff
path: root/ld
AgeCommit message (Collapse)AuthorFilesLines
2017-06-23S/390: Add support for pgste markerAndreas Krebbel5-0/+98
This patch adds a new S/390 specific segment type: PT_S390_PGSTE. For binaries marked with that segment the kernel will allocate 4k page tables. The only user so far will be qemu. ld/ChangeLog: 2017-06-23 Andreas Krebbel <krebbel@linux.vnet.ibm.com> * Makefile.in: Add s390.em as build dependency. * emulparams/elf64_s390.sh (EXTRA_EM_FILE): Add s390.em. * emultempl/s390.em: New file. * gen-doc.texi: Add documentation for --s390-pgste option. * ld.texinfo: Likewise. include/ChangeLog: 2017-06-23 Andreas Krebbel <krebbel@linux.vnet.ibm.com> * elf/s390.h (PT_S390_PGSTE): Define macro. binutils/ChangeLog: 2017-06-23 Andreas Krebbel <krebbel@linux.vnet.ibm.com> * readelf.c (get_s390_segment_type): Add support for the new segment type PT_S390_PGSTE. (get_segment_type): Call get_s390_segment_type. elfcpp/ChangeLog: 2017-06-23 Andreas Krebbel <krebbel@linux.vnet.ibm.com> * elfcpp.h (enum PT): Add PT_S390_PGSTE to enum. bfd/ChangeLog: 2017-06-23 Andreas Krebbel <krebbel@linux.vnet.ibm.com> * elf-s390.h: New file. * elf64-s390.c (struct elf_s390_link_hash_table): Add params field. (elf_s390_additional_program_headers): New function. (elf_s390_modify_segment_map): New function. (bfd_elf_s390_set_options): New function. (elf_backend_additional_program_headers) (elf_backend_modify_segment_map): Add macro definitions.
2017-06-22i386: Add hidden weak undefined testsH.J. Lu3-0/+47
* testsuite/ld-i386/i386.exp: Run weakundef1 tests. * testsuite/ld-i386/weakundef1.c: New file.
2017-06-22Pass $NOPIE_CFLAGS to ELF visibility testsH.J. Lu2-2/+9
PR ld/21090 * testsuite/ld-elfvsb/elfvsb.exp (visibility_run): Pass $NOPIE_CFLAGS if non-PIE is required.
2017-06-22Pass $NOPIE_CFLAGS/$NOPIE_LDFLAGS to "Run pr19031"H.J. Lu2-2/+9
PR ld/21090 * testsuite/ld-i386/i386.exp: Pass $NOPIE_CFLAGS and $NOPIE_LDFLAGS to "Run pr19031".
2017-06-22Pass $NOPIE_CFLAGS and $NOPIE_LDFLAGS to more ELF testsH.J. Lu5-19/+38
PR ld/21090 * testsuite/ld-gc/gc.ex: Compile tmpdir/pr14265.o with $NOPIE_CFLAGS. * testsuite/ld-i386/i386.exp: Pass $NOPIE_CFLAGS and $NOPIE_LDFLAGS if non-PIE is required. * testsuite/ld-i386/no-plt.exp (NOPIE_CFLAGS): New. (NOPIE_LDFLAGS): Likewise. Pass $NOPIE_LDFLAGS if non-PIE is required. * testsuite/ld-shared/shared.exp: Compile tmpdir/sh1np.o with $NOPIE_CFLAGS.
2017-06-22x86: Support Intel Shadow Stack with SHSTK propertyH.J. Lu29-1/+306
To support Intel Shadow Stack (SHSTK) in Intel Control-flow Enforcement Technology (CET) instructions: https://software.intel.com/sites/default/files/managed/4d/2a/control-flow-enforcement-technology-preview.pdf #define GNU_PROPERTY_X86_FEATURE_1_SHSTK (1U << 1) is added to GNU program properties to indicate that all executable sections are compatible with SHSTK where return address popped from shadow stack always matches return address popped from normal stack. GNU_PROPERTY_X86_FEATURE_1_SHSTK is set on output only if it is set on all relocatable inputs. bfd/ * elf32-i386.c (elf_i386_merge_gnu_properties): If info->shstk is set, turn on GNU_PROPERTY_X86_FEATURE_1_SHSTK. (elf_i386_link_setup_gnu_properties): If info->shstk is set, turn on GNU_PROPERTY_X86_FEATURE_1_IBT. * elf64-x86-64.c (elf_x86_64_merge_gnu_properties): If info->shstk is set, turn on GNU_PROPERTY_X86_FEATURE_1_SHSTK. (elf_x86_64_link_setup_gnu_properties): If info->shstk is set, turn on GNU_PROPERTY_X86_FEATURE_1_IBT. binutils/ * readelf.c (decode_x86_feature): Decode GNU_PROPERTY_X86_FEATURE_1_SHSTK. * testsuite/binutils-all/i386/shstk.d: New file. * testsuite/binutils-all/i386/shstk.s: Likewise. * testsuite/binutils-all/x86-64/shstk-x32.d: Likewise. * testsuite/binutils-all/x86-64/shstk.d: Likewise. * testsuite/binutils-all/x86-64/shstk.s: Likewise. include/ * bfdlink.h (bfd_link_info): Add shstk. * elf/common.h (GNU_PROPERTY_X86_FEATURE_1_SHSTK): New. ld/ * NEWS: Mention -z shstk and GNU_PROPERTY_X86_FEATURE_1_SHSTK. * emulparams/cet.sh (PARSE_AND_LIST_OPTIONS_CET): Add "-z shstk". (PARSE_AND_LIST_ARGS_CASE_Z_CET): Support "-z shstk". * ld.texinfo: Document -z shstk. * testsuite/ld-i386/i386.exp: Run SHSTK tests. * testsuite/ld-x86-64/x86-64.exp: Likewise. * testsuite/ld-i386/property-x86-shstk.s: New file. * testsuite/ld-i386/property-x86-shstk1a.d: Likewise. * testsuite/ld-i386/property-x86-shstk1b.d: Likewise. * testsuite/ld-i386/property-x86-shstk2.d: Likewise. * testsuite/ld-i386/property-x86-shstk3a.d: Likewise. * testsuite/ld-i386/property-x86-shstk3b.d: Likewise. * testsuite/ld-i386/property-x86-shstk4.d: Likewise. * testsuite/ld-i386/property-x86-shstk5.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk.s: Likewise. * testsuite/ld-x86-64/property-x86-shstk1a-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk1a.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk1b-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk1b.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk2-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk2.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk3a-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk3a.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk3b-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk3b.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk4-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk4.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk5-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-shstk5.d: Likewise.
2017-06-22x86: Support Intel IBT with IBT property and IBT-enable PLTH.J. Lu75-2/+1746
To support IBT in Intel Control-flow Enforcement Technology (CET) instructions: https://software.intel.com/sites/default/files/managed/4d/2a/control-flow-enforcement-technology-preview.pdf #define GNU_PROPERTY_X86_FEATURE_1_AND 0xc0000002 #define GNU_PROPERTY_X86_FEATURE_1_IBT (1U << 0) are added to GNU program properties to indicate that all executable sections are compatible with IBT when ENDBR instruction starts each valid target where an indirect branch instruction can land. GNU_PROPERTY_X86_FEATURE_1_IBT is set on output only if it is set on all relocatable inputs. The followings changes are made to the Procedure Linkage Table (PLT): 1. For 64-bit x86-64, PLT is changed to PLT0: push GOT[1] bnd jmp *GOT[2] nop ... PLTn: endbr64 push namen_reloc_index bnd jmp PLT0 together with the second PLT section: PLTn: endbr64 bnd jmp *GOT[namen_index] nop BND prefix is also added so that IBT-enabled PLT is compatible with MPX. 2. For 32-bit x86-64 (x32) and i386, PLT is changed to PLT0: push GOT[1] jmp *GOT[2] nop ... PLTn: endbr64 # endbr32 for i386. push namen_reloc_index jmp PLT0 together with the second PLT section: PLTn: endbr64 # endbr32 for i386. jmp *GOT[namen_index] nop BND prefix isn't used since MPX isn't supported on x32 and BND registers aren't used in parameter passing on i386. GOT is an array of addresses. Initially, GOT[namen_index] is filled with the address of the ENDBR instruction of the corresponding entry in the first PLT section. The function, namen, is called via the ENDBR instruction in the second PLT entry. GOT[namen_index] is updated to the actual address of the function, namen, at run-time. 2 linker command line options are added: 1. -z ibtplt: Generate IBT-enabled PLT. 2. -z ibt: Generate GNU_PROPERTY_X86_FEATURE_1_IBT in GNU program properties as well as IBT-enabled PLT. bfd/ * elf32-i386.c (elf_i386_lazy_ibt_plt0_entry): New. (elf_i386_lazy_ibt_plt_entry): Likewise. (elf_i386_pic_lazy_ibt_plt0_entry): Likewise. (elf_i386_non_lazy_ibt_plt_entry): Likewise. (elf_i386_pic_non_lazy_ibt_plt_entry): Likewise. (elf_i386_eh_frame_lazy_ibt_plt): Likewise. (elf_i386_lazy_plt_layout): Likewise. (elf_i386_non_lazy_plt_layout): Likewise. (elf_i386_link_hash_entry): Add plt_second. (elf_i386_link_hash_table): Add plt_second and plt_second_eh_frame. (elf_i386_allocate_dynrelocs): Use the second PLT if needed. (elf_i386_size_dynamic_sections): Use .plt.got unwind info for the second PLT. Check the second PLT. (elf_i386_relocate_section): Use the second PLT to resolve PLT reference if needed. (elf_i386_finish_dynamic_symbol): Fill and use the second PLT if needed. (elf_i386_finish_dynamic_sections): Set sh_entsize on the second PLT. Generate unwind info for the second PLT. (elf_i386_plt_type): Add plt_second. (elf_i386_get_synthetic_symtab): Support the second PLT. (elf_i386_parse_gnu_properties): Support GNU_PROPERTY_X86_FEATURE_1_AND. (elf_i386_merge_gnu_properties): Support GNU_PROPERTY_X86_FEATURE_1_AND. If info->ibt is set, turn on GNU_PROPERTY_X86_FEATURE_1_IBT (elf_i386_link_setup_gnu_properties): If info->ibt is set, turn on GNU_PROPERTY_X86_FEATURE_1_IBT. Use IBT-enabled PLT for info->ibtplt, info->ibt or GNU_PROPERTY_X86_FEATURE_1_IBT is set on all relocatable inputs. * elf64-x86-64.c (elf_x86_64_lazy_ibt_plt_entry): New. (elf_x32_lazy_ibt_plt_entry): Likewise. (elf_x86_64_non_lazy_ibt_plt_entry): Likewise. (elf_x32_non_lazy_ibt_plt_entry): Likewise. (elf_x86_64_eh_frame_lazy_ibt_plt): Likewise. (elf_x32_eh_frame_lazy_ibt_plt): Likewise. (elf_x86_64_lazy_ibt_plt): Likewise. (elf_x32_lazy_ibt_plt): Likewise. (elf_x86_64_non_lazy_ibt_plt): Likewise. (elf_x32_non_lazy_ibt_plt): Likewise. (elf_x86_64_get_synthetic_symtab): Support the second PLT. (elf_x86_64_parse_gnu_properties): Support GNU_PROPERTY_X86_FEATURE_1_AND. (elf_x86_64_merge_gnu_properties): Support GNU_PROPERTY_X86_FEATURE_1_AND. If info->ibt is set, turn on GNU_PROPERTY_X86_FEATURE_1_IBT (elf_x86_64_link_setup_gnu_properties): If info->ibt is set, turn on GNU_PROPERTY_X86_FEATURE_1_IBT. Use IBT-enabled PLT for info->ibtplt, info->ibt or GNU_PROPERTY_X86_FEATURE_1_IBT is set on all relocatable inputs. binutils/ * readelf.c (decode_x86_feature): New. (print_gnu_property_note): Call decode_x86_feature on GNU_PROPERTY_X86_FEATURE_1_AND. * testsuite/binutils-all/i386/empty.d: New file. * testsuite/binutils-all/i386/empty.s: Likewise. * testsuite/binutils-all/i386/ibt.d: Likewise. * testsuite/binutils-all/i386/ibt.s: Likewise. * testsuite/binutils-all/x86-64/empty-x32.d: Likewise. * testsuite/binutils-all/x86-64/empty.d: Likewise. * testsuite/binutils-all/x86-64/empty.s: Likewise. * testsuite/binutils-all/x86-64/ibt-x32.d: Likewise. * testsuite/binutils-all/x86-64/ibt.d: Likewise. * testsuite/binutils-all/x86-64/ibt.s: Likewise. include/ * bfdlink.h (bfd_link_info): Add ibtplt and ibt. * elf/common.h (GNU_PROPERTY_X86_FEATURE_1_AND): New. (GNU_PROPERTY_X86_FEATURE_1_IBT): Likewise. ld/ * Makefile.am (ELF_X86_DEPS): Add $(srcdir)/emulparams/cet.sh. * Makefile.in: Regenerated. * NEWS: Mention GNU_PROPERTY_X86_FEATURE_1_IBT, -z ibtplt and -z ibt. * emulparams/cet.sh: New file. * testsuite/ld-i386/ibt-plt-1.d: Likewise. * testsuite/ld-i386/ibt-plt-1.s: Likewise. * testsuite/ld-i386/ibt-plt-2.s: Likewise. * testsuite/ld-i386/ibt-plt-2a.d: Likewise. * testsuite/ld-i386/ibt-plt-2b.d: Likewise. * testsuite/ld-i386/ibt-plt-2c.d: Likewise. * testsuite/ld-i386/ibt-plt-2d.d: Likewise. * testsuite/ld-i386/ibt-plt-3.s: Likewise. * testsuite/ld-i386/ibt-plt-3a.d: Likewise. * testsuite/ld-i386/ibt-plt-3b.d: Likewise. * testsuite/ld-i386/ibt-plt-3c.d: Likewise. * testsuite/ld-i386/ibt-plt-3d.d: Likewise. * testsuite/ld-i386/plt-main-ibt.dd: Likewise. * testsuite/ld-i386/plt-pie-ibt.dd: Likewise. * testsuite/ld-i386/property-x86-empty.s: Likewise. * testsuite/ld-i386/property-x86-ibt.s: Likewise. * testsuite/ld-i386/property-x86-ibt1a.d: Likewise. * testsuite/ld-i386/property-x86-ibt1b.d: Likewise. * testsuite/ld-i386/property-x86-ibt2.d: Likewise. * testsuite/ld-i386/property-x86-ibt3a.d: Likewise. * testsuite/ld-i386/property-x86-ibt3b.d: Likewise. * testsuite/ld-i386/property-x86-ibt4.d: Likewise. * testsuite/ld-i386/property-x86-ibt5.d: Likewise. * testsuite/ld-x86-64/ibt-plt-1-x32.d: Likewise. * testsuite/ld-x86-64/ibt-plt-1.d: Likewise. * testsuite/ld-x86-64/ibt-plt-1.s: Likewise. * testsuite/ld-x86-64/ibt-plt-2.s: Likewise. * testsuite/ld-x86-64/ibt-plt-2a-x32.d: Likewise. * testsuite/ld-x86-64/ibt-plt-2a.d: Likewise. * testsuite/ld-x86-64/ibt-plt-2b-x32.d: Likewise. * testsuite/ld-x86-64/ibt-plt-2b.d: Likewise. * testsuite/ld-x86-64/ibt-plt-2c-x32.d: Likewise. * testsuite/ld-x86-64/ibt-plt-2c.d: Likewise. * testsuite/ld-x86-64/ibt-plt-2d-x32.d: Likewise. * testsuite/ld-x86-64/ibt-plt-2d.d: Likewise. * testsuite/ld-x86-64/ibt-plt-3.s: Likewise. * testsuite/ld-x86-64/ibt-plt-3a-x32.d: Likewise. * testsuite/ld-x86-64/ibt-plt-3a.d: Likewise. * testsuite/ld-x86-64/ibt-plt-3b-x32.d: Likewise. * testsuite/ld-x86-64/ibt-plt-3b.d: Likewise. * testsuite/ld-x86-64/ibt-plt-3c-x32.d: Likewise. * testsuite/ld-x86-64/ibt-plt-3c.d: Likewise. * testsuite/ld-x86-64/ibt-plt-3d-x32.d: Likewise. * testsuite/ld-x86-64/ibt-plt-3d.d: Likewise. * testsuite/ld-x86-64/plt-main-ibt-now.rd: Likewise. * testsuite/ld-x86-64/plt-main-ibt-x32.dd: Likewise. * testsuite/ld-x86-64/plt-main-ibt.dd: Likewise. * testsuite/ld-x86-64/property-x86-empty.s: Likewise. * testsuite/ld-x86-64/property-x86-ibt.s: Likewise. * testsuite/ld-x86-64/property-x86-ibt1a-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt1a.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt1b-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt1b.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt2-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt2.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt3a-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt3a.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt3b-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt3b.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt4-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt4.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt5-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-ibt5.d: Likewise. * emulparams/elf32_x86_64.sh: Source emulparams/cet.sh. (TINY_READONLY_SECTION): Add .plt.sec. * emulparams/elf_i386.sh: Likewise. * emulparams/elf_x86_64.sh: Source emulparams/cet.sh. * ld.texinfo: Document -z ibtplt and -z ibt. * testsuite/ld-i386/i386.exp: Run IBT and IBT PLT tests. * testsuite/ld-x86-64/x86-64.exp: Likewise. * testsuite/ld-x86-64/pr21481b.S (check): Updated for x32.
2017-06-21Pass $NOPIE_CFLAGS and $NOPIE_LDFLAGS to some ELF testsH.J. Lu2-8/+17
Some ELF tests will fail when PIE is used. PR ld/21090 * testsuite/ld-elf/shared.exp: Pass $NOPIE_CFLAGS and $NOPIE_LDFLAGS if non-PIE is required.
2017-06-21Pass $NOPIE_CFLAGS to NOCROSSREFS testsH.J. Lu2-2/+9
PR ld/21090 * testsuite/ld-scripts/crossref.exp: Also pass $NOPIE_CFLAGS to CC.
2017-06-21Add missing ChangeLog entriesH.J. Lu1-0/+10
2017-06-21Pass $NOPIE_LDFLAGS size testsH.J. Lu5-15/+29
PR ld/21090 * testsuite/ld-size/size.exp: Pass $NOPIE_LDFLAGS to size-4a, size-4b, size-5a, size-5b, size-6 and size-8 tests.
2017-06-21PowerPC64 tocsave testcasesAlan Modra9-0/+129
* testsuite/ld-powerpc/powerpc.exp: Run TOCSAVE tests. * testsuite/ld-powerpc/tocsave1.s, * testsuite/ld-powerpc/tocsave1a.d, * testsuite/ld-powerpc/tocsave1s.d, * testsuite/ld-powerpc/tocsave2.s, * testsuite/ld-powerpc/tocsave2a.d, * testsuite/ld-powerpc/tocsave2s.d, * testsuite/ld-powerpc/tocsavelib.s: New files.
2017-06-19Check the DYNAMIC bit for input shared objectsH.J. Lu3-0/+42
Since the BFD section count may not be cleared for shared objects during linking, we should check the DYNAMIC bit for input shared objects. bfd/ PR ld/21626 * elf-properties.c (_bfd_elf_link_setup_gnu_properties): Check the DYNAMIC bit instead of bfd_count_sections. ld/ PR ld/21626 * testsuite/ld-i386/i386.exp: Run ld/21626 tests. * testsuite/ld-x86-64/x86-64.exp: Likewise.
2017-06-18is_underscore_target for ld-elf testsAlan Modra28-95/+93
and correct targ_underscore in config.bfd bfd/ * config.bfd: Correct targ_underscore for epiphany, ip2k, m32c, mn10200, pru, rl78, rx, crisv32 and v850. ld/ * testsuite/lib/ld-lib.exp (is_underscore_target): New. * testsuite/ld-elf/elf.exp (ASFLAGS): Define UNDERSCORE. * testsuite/ld-elf/pr21562a.s: If UNDERSCORE defined, reference sym with prefix. * testsuite/ld-elf/pr21562b.s: Likewise. * testsuite/ld-elf/sizeof.s: Likewise. * testsuite/ld-elf/startof.s: Likewise. * testsuite/ld-elf/pr14156a.d: Adjust for extra symbols. * testsuite/ld-elf/pr21562a.d: Remove underscore target from xfails, and match prefixed symbol. * testsuite/ld-elf/pr21562b.d: Likewise. * testsuite/ld-elf/pr21562c.d: Likewise. * testsuite/ld-elf/pr21562d.d: Likewise. * testsuite/ld-elf/pr21562e.d: Likewise. * testsuite/ld-elf/pr21562f.d: Likewise. * testsuite/ld-elf/pr21562g.d: Likewise. * testsuite/ld-elf/pr21562h.d: Likewise. * testsuite/ld-elf/pr21562i.d: Likewise. * testsuite/ld-elf/pr21562j.d: Likewise. * testsuite/ld-elf/pr21562k.d: Likewise. * testsuite/ld-elf/pr21562l.d: Likewise. * testsuite/ld-elf/pr21562m.d: Likewise. * testsuite/ld-elf/pr21562n.d: Likewise. * testsuite/ld-elf/sizeofa.d: Likewise. * testsuite/ld-elf/sizeofb.d: Likewise. * testsuite/ld-elf/sizeofc.d: Likewise. * testsuite/ld-elf/startofa.d: Likewise. * testsuite/ld-elf/startofb.d: Likewise. * testsuite/ld-elf/startofc.d: Likewise.
2017-06-16Rewrite __start and __stop symbol handlingAlan Modra21-224/+296
This arranges for __start and __stop symbols to be defined before garbage collection, for all target formats. That should allow the COFF and PE --gc-sections to keep a singleton orphan input section, a feature lost by 2017-06-13 commit cbd0eecf26. The fancier ELF treatment of keeping all input sections associated with a __start or __stop symbol, from 2015-10-23 commit 1cce69b9dc, is retained. .startof. and .sizeof. symbols are deliberately not defined before garbage collection, so these won't affect garbage collection of sections. The patch also ensures __start, __stop, .startof. and .sizeof. symbols are defined before target size_dynamic_sections is called, albeit with a preliminary value, so that target code doesn't need to cope with a symbol changing from undefined at size_dynamic_sections to defined at relocate_section. Also, a number of problems with the testcases have been fixed. PR ld/20022 PR ld/21557 PR ld/21562 PR ld/21571 include/ * bfdlink.h (struct bfd_link_hash_entry): Delete undef.section. bfd/ * targets.c (struct bfd_target): Add _bfd_define_start_stop. (BFD_JUMP_TABLE_LINK): Likewise. * elf-bfd.h (bfd_elf_define_start_stop): Declare. * elflink.c (_bfd_elf_gc_mark_rsec): Update comment. (bfd_elf_define_start_stop): New function. * linker.c (bfd_generic_define_start_stop): New function. * coff64-rs6000.c (rs6000_xcoff64_vec, rs6000_xcoff64_aix_vec): Init new field. * aout-adobe.c (aout_32_bfd_define_start_stop): Define. * aout-target.h (MY_bfd_define_start_stop): Define. * aout-tic30.c (MY_bfd_define_start_stop): Define. * binary.c (binary_bfd_define_start_stop): Define. * bout.c (b_out_bfd_define_start_stop): Define. * coff-alpha.c (_bfd_ecoff_bfd_define_start_stop): Define. * coff-mips.c (_bfd_ecoff_bfd_define_start_stop): Define. * coff-rs6000.c (_bfd_xcoff_bfd_define_start_stop): Define. * coffcode.h (coff_bfd_define_start_stop): Define. * elfxx-target.h (bfd_elfNN_bfd_define_start_stop): Define. * i386msdos.c (msdos_bfd_define_start_stop): Define. * i386os9k.c (os9k_bfd_define_start_stop): Define. * ieee.c (ieee_bfd_define_start_stop): Define. * ihex.c (ihex_bfd_define_start_stop): Define. * libbfd-in.h (_bfd_nolink_bfd_define_start_stop): Define. * mach-o-target.c (bfd_mach_o_bfd_define_start_stop): Define. * mmo.c (mmo_bfd_define_start_stop): Define. * nlm-target.h (nlm_bfd_define_start_stop): Define. * oasys.c (oasys_bfd_define_start_stop): Define. * pef.c (bfd_pef_bfd_define_start_stop): Define. * plugin.c (bfd_plugin_bfd_define_start_stop): Define. * ppcboot.c (ppcboot_bfd_define_start_stop): Define. * som.c (som_bfd_define_start_stop): Define. * srec.c (srec_bfd_define_start_stop): Define. * tekhex.c (tekhex_bfd_define_start_stop): Define. * versados.c (versados_bfd_define_start_stop): Define. * vms-alpha.c (vms_bfd_define_start_stop): Define. (alpha_vms_bfd_define_start_stop): Define. * xsym.c (bfd_sym_bfd_define_start_stop): Define. * bfd-in2.h: Regenerate. * libbfd.h: Regenerate. ld/ * emultempl/elf32.em (gld${EMULATION_NAME}_after_open): Don't set __start/__stop syms here. * ldlang.c (lang_set_startof): Delete. (start_stop_syms, start_stop_count, start_stop_alloc): New vars. (lang_define_start_stop, lang_init_start_stop, foreach_start_stop, undef_start_stop, lang_undef_start_stop, lang_init_startof_sizeof, set_start_stop, lang_finalize_start_stop): New functions. (lang_process): Call _start_stop functions. * testsuite/ld-elf/pr21562a.d: Use xfail rather than notarget. Correct typos and list of xfail targets. * testsuite/ld-elf/pr21562b.d: Likewise. * testsuite/ld-elf/pr21562c.d: Likewise. * testsuite/ld-elf/pr21562d.d: Likewise. * testsuite/ld-elf/pr21562e.d: Likewise. * testsuite/ld-elf/pr21562f.d: Likewise. * testsuite/ld-elf/pr21562g.d: Likewise. * testsuite/ld-elf/pr21562h.d: Likewise. * testsuite/ld-elf/pr21562i.d: Likewise. * testsuite/ld-elf/pr21562j.d: Likewise. * testsuite/ld-elf/pr21562k.d: Likewise. * testsuite/ld-elf/pr21562l.d: Likewise. * testsuite/ld-elf/pr21562m.d: Likewise. * testsuite/ld-elf/pr21562n.d: Likewise. * testsuite/ld-elf/sizeofa.d: Likewise. Adjust to pass for generic ELF. * testsuite/ld-elf/sizeofb.d: Likewise. * testsuite/ld-elf/startofa.d: Likewise. * testsuite/ld-elf/startofb.d: Likewise.
2017-06-16[AArch64] Use SYMBOL_REFERENCES_LOCAL in one symbol checkJiong Wang6-14/+35
For some pc-relative relocations we want to allow them under PIC mode while a normal global symbol defined in the same dynamic object can still bind externally through copy relocation. So, we should not allow pc-relative relocation against such symbol. SYMBOL_REFERENCES_LOCAL should be used and is more accurate than the original individual checks. bfd/ * elfnn-aarch64.c (elfNN_aarch64_final_link_relocate): Use SYMBOL_REFERENCES_LOCAL. ld/ * testsuite/ld-aarch64/aarch64-elf.exp: Update test name * testsuite/ld-aarch64/pcrel.s: Add new testcases. * testsuite/ld-aarch64/pcrel_pic_undefined.d: Update the expected warnings. * testsuite/ld-aarch64/pcrel_pic_defined_local.d: Rename ... * testsuite/ld-aarch64/pcrel_pic_defined.d: ... to this. Update expected warnings.
2017-06-15Correct "ld --help" to display "-z stack-size=SIZE"H.J. Lu2-1/+6
ELF Linker command line option to set stack size is "-z stack-size=SIZE", not "-z stacksize=SIZE". * exsup.c (elf_shlib_list_options): Display "-z stack-size=SIZE" instead of "-z stacksize=SIZE".
2017-06-15[AArch64] Allow COPY relocation eliminationJiong Wang7-0/+82
As discussed at the PR, this patch tries to avoid COPY relocation generation and propagate the original relocation into runtime if it was relocating on writable section. The ELIMINATE_COPY_RELOCS has been set to true and it's underlying infrastructure has been improved so that the COPY reloc elimination at least working on absoluate relocations (ABS64) on AArch64. BFD linker copy relocation elimination framwork requires the backend to always allocate dynrelocs for all those relocation types that are possible to introduce copy relocations. This is for adjust_dynamic_symbol hook to be able to get all symbol reference information. Should one symbol is referenced by more than one relocations, if there is any of them needs copy relocation then linker should generate it. bfd/ PR ld/21532 * elfnn-aarch64.c (ELIMINATE_COPY_RELOCS): Set to 1. (elfNN_aarch64_final_link_relocate): Also propagate relocations to runtime for if there needs copy relocation elimination. (need_copy_relocation_p): New function. Return true for symbol with pc-relative references and if it's against read-only sections. (elfNN_aarch64_adjust_dynamic_symbol): Use need_copy_relocation_p. (elfNN_aarch64_check_relocs): Allocate dynrelocs for relocation types that are related with accessing external objects. (elfNN_aarch64_gc_sweep_hook): Sync the relocation types with the change in elfNN_aarch64_check_relocs. ld/ * testsuite/ld-aarch64/copy-reloc-exe-2.s: New test source file. * testsuite/ld-aarch64/copy-reloc-2.d: New test. * testsuite/ld-aarch64/copy-reloc-exe-eliminate.s: New test source file. * testsuite/ld-aarch64/copy-reloc-eliminate.d: New test. * testsuite/ld-aarch64/copy-reloc-so.s: Define new global objects. * testsuite/ld-aarch64/aarch64-elf.exp: Run new tests.
2017-06-14Fix address violation when disassembling a corrupt binary.Nick Clifton2-3/+8
PR binutils/21580 binutils * objdump.c (disassemble_bytes): Check for buffer overrun when printing out rae insns. ld * testsuite/ld-nds32/diff.d: Adjust expected output.
2017-06-14xfail pr20022.d on targets without dynamic relocs in .textH.J. Lu2-0/+8
ld-gc/pr20022.d requires support for dynamic relocations in .text section. PR ld/20022 * testsuite/ld-gc/pr20022.d: Skip on targets without dynamic relocations in .text section.
2017-06-14Skip PR ld/21562 tests on targets with leading char or without --gc-sectionsH.J. Lu15-0/+105
Symbol lookup in linker will always fail on targets with leading char in symbol name since __start_SECNAME and __stop_SECNAME in C may be ___start_SECNAME and ___stop_SECNAME in assembly. Also tests with --gc-sections always fails on targets without --gc-sections support. * testsuite/ld-elf/pr21562a.d: Skip on targets with leading char in in symbol name or without --gc-sections. * testsuite/ld-elf/pr21562b.d: Likewise. * testsuite/ld-elf/pr21562c.d: Likewise. * testsuite/ld-elf/pr21562d.d: Likewise. * testsuite/ld-elf/pr21562i.d: Likewise. * testsuite/ld-elf/pr21562j.d: Likewise. * testsuite/ld-elf/pr21562k.d: Likewise. * testsuite/ld-elf/pr21562l.d: Likewise. * testsuite/ld-elf/pr21562m.d: Likewise. * testsuite/ld-elf/pr21562n.d: Likewise. * testsuite/ld-elf/pr21562e.d: Skip on targets with leading char in symbol name. * testsuite/ld-elf/pr21562f.d: Likewise. * testsuite/ld-elf/pr21562g.d: Likewise. * testsuite/ld-elf/pr21562h.d: Likewise.
2017-06-14Add size to bar in ld-gc/pr20022a.sH.J. Lu2-0/+5
Some linker backends require size info on dynamic symbols. * testsuite/ld-gc/pr20022a.s: Add size to bar.
2017-06-14Skip sizeof/startof tests on targets with leading charH.J. Lu5-0/+24
Symbol lookup in linker will always fail on targets with leading char in symbol name since __start_SECNAME and __stop_SECNAME in C may be ___start_SECNAME and ___stop_SECNAME in assembly. * testsuite/ld-elf/sizeofa.d: Skip on targets with leading char in symbol name. * testsuite/ld-elf/sizeofb.d: Likewise. * testsuite/ld-elf/startofa.d: Likewise. * testsuite/ld-elf/startofb.d: Likewise.
2017-06-14Move location of .jumptables section and add .hightext section to AVR linker ↵Georg-Johann Lay2-5/+18
script. PR ld/21583 * scripttempl/avr.sc (.jumptables): Move down in text section. (.hightext): New in text.
2017-06-14Accept more epiphany targetsSebastian Huber2-1/+5
In particular this adds support for the epiphany-rtems target. bfd/ * config.bfd (epiphany-*-elf): Accept epiphany-*-*. ld/ * configure.tgt (epiphany-*-elf): Accept epiphany-*-*.
2017-06-13ld: Don't define __start_SECNAME/__stop_SECNAME for -rH.J. Lu4-4/+41
__start_SECNAME and __stop_SECNAME shouldn't be defined for "ld -r". * ldlang.c (lang_set_startof): Skip if config.build_constructors is FALSE. * testsuite/ld-elf/sizeofc.d: New file. * testsuite/ld-elf/startofc.d: Likewise.
2017-06-13ld: Add tests for .startof.SECNAME/.sizeof.SECNAMEH.J. Lu5-0/+37
* testsuite/ld-elf/sizeof.d: Renamed to ... * testsuite/ld-elf/sizeofa.d: This. Updated. * testsuite/ld-elf/startof.d: Renamed to ... * testsuite/ld-elf/startofa.d: This. Updated. * testsuite/ld-elf/sizeofb.d: New file. * testsuite/ld-elf/startofb.d: Likewise.
2017-06-13Always define referenced __start_SECNAME/__stop_SECNAMEH.J. Lu34-79/+381
Currently, linker will define __start_SECNAME and __stop_SECNAME symbols only for orphaned sections. However, during garbage collection, ELF linker marks all sections with references to __start_SECNAME and __stop_SECNAME symbols as used even when section SECNAME isn't an orphaned section and linker won't define __start_SECNAME nor __stop_SECNAME. And ELF linker stores the first input section whose name matches __start_SECNAME or __stop_SECNAME in u.undef.section for garbage collection. If these symbols are provided in linker script, u.undef.section is set to the section where they will defined by linker script, which leads to the incorrect output. This patch changes linker to always define referenced __start_SECNAME and __stop_SECNAME if the input section name is the same as the output section name, which is always true for orphaned sections, and SECNAME is a C identifier. Also __start_SECNAME and __stop_SECNAME symbols are marked as hidden by ELF linker so that __start_SECNAME and __stop_SECNAME symbols for section SECNAME in different modules are unique. For garbage collection, ELF linker stores the first matched input section in the unused vtable field. bfd/ PR ld/20022 PR ld/21557 PR ld/21562 PR ld/21571 * elf-bfd.h (elf_link_hash_entry): Add start_stop. Change the vtable field to a union. (_bfd_elf_is_start_stop): Removed. * elf32-i386.c (elf_i386_convert_load_reloc): Also check for __start_SECNAME and __stop_SECNAME symbols. * elf64-x86-64.c (elf_x86_64_convert_load_reloc): Likewise. * elflink.c (_bfd_elf_is_start_stop): Removed. (_bfd_elf_gc_mark_rsec): Check start_stop instead of calling _bfd_elf_is_start_stop. (elf_gc_propagate_vtable_entries_used): Skip __start_SECNAME and __stop_SECNAME symbols. Updated. (elf_gc_smash_unused_vtentry_relocs): Likewise. (bfd_elf_gc_record_vtinherit): Likewise. (bfd_elf_gc_record_vtentry): Likewise. ld/ PR ld/20022 PR ld/21557 PR ld/21562 PR ld/21571 * ld.texinfo: Update __start_SECNAME/__stop_SECNAME symbols. * ldlang.c (lang_insert_orphan): Move handling of __start_SECNAME and __stop_SECNAME symbols to ... (lang_set_startof): Here. Also define __start_SECNAME and __stop_SECNAME for -Ur. * emultempl/elf32.em (gld${EMULATION_NAME}_after_open): Mark referenced __start_SECNAME and __stop_SECNAME symbols as hidden and set start_stop for garbage collection. * testsuite/ld-elf/pr21562a.d: New file. * testsuite/ld-elf/pr21562a.s: Likewise. * testsuite/ld-elf/pr21562a.t: Likewise. * testsuite/ld-elf/pr21562b.d: Likewise. * testsuite/ld-elf/pr21562b.s: Likewise. * testsuite/ld-elf/pr21562b.t: Likewise. * testsuite/ld-elf/pr21562c.d: Likewise. * testsuite/ld-elf/pr21562c.t: Likewise. * testsuite/ld-elf/pr21562d.d: Likewise. * testsuite/ld-elf/pr21562d.t: Likewise. * testsuite/ld-elf/pr21562e.d: Likewise. * testsuite/ld-elf/pr21562f.d: Likewise. * testsuite/ld-elf/pr21562g.d: Likewise. * testsuite/ld-elf/pr21562h.d: Likewise. * testsuite/ld-elf/pr21562i.d: Likewise. * testsuite/ld-elf/pr21562j.d: Likewise. * testsuite/ld-elf/pr21562k.d: Likewise. * testsuite/ld-elf/pr21562l.d: Likewise. * testsuite/ld-elf/pr21562m.d: Likewise. * testsuite/ld-elf/pr21562n.d: Likewise. * testsuite/ld-gc/pr20022.d: Likewise. * testsuite/ld-gc/pr20022a.s: Likewise. * testsuite/ld-gc/pr20022b.s: Likewise. * testsuite/ld-gc/gc.exp: Run PR ld/20022 tests. * testsuite/ld-gc/pr19161.d: Also accept local __start_SECNAME symbol. * testsuite/ld-gc/start.d: Likewise. * testsuite/ld-x86-64/lea1a.d: Updated. * testsuite/ld-x86-64/lea1b.d: Updated. * testsuite/ld-x86-64/lea1d.d: Updated. * testsuite/ld-x86-64/lea1e.d: Likewise.
2017-06-13Replace multiple AVR scripts with a single, customizable linker script.Georg-Johann Lay22-283/+181
PR ld/21569 * scripttempl/avrtiny.sc: Remove file. * Makefile.am (eavrtiny.c): Depend on avr.sc, no more on avrtiny.sc. * Makefile.in: Regenerate. * emulparams/avrtiny.sh (SCRIPT_NAME): Set var to "avr". (TEXT_ORIGIN): Remove var. (FUSE_NAME, FUSE_LENGTH, LOCK_LENGTH, SIGNATURE_LENGTH) (RODATA_PM_OFFSET): Set new vars. * emulparams/avr1.sh (FUSE_NAME, EEPROM_LENGTH, FUSE_LENGTH) (LOCK_LENGTH, SIGNATURE_LENGTH, USER_SIGNATURE_LENGTH): Set new vars. * emulparams/avr2.sh: Same. * emulparams/avr25.sh: Same. * emulparams/avr3.sh: Same. * emulparams/avr31.sh: Same. * emulparams/avr35.sh: Same. * emulparams/avr4.sh: Same. * emulparams/avr5.sh: Same. * emulparams/avr51.sh: Same. * emulparams/avr6.sh: Same. * emulparams/avrxmega1.sh: Same. * emulparams/avrxmega2.sh: Same. * emulparams/avrxmega3.sh: Same. * emulparams/avrxmega4.sh: Same. * emulparams/avrxmega5.sh: Same. * emulparams/avrxmega6.sh: Same. * emulparams/avrxmega7.sh: Same. * scripttempl/avr.sc (__EEPROM_REGION_LENGTH__): Only define if EEPROM_LENGTH is set. (MEMORY) [eeprom]: Same. (SECTIONS) [.eeprom]: Same for output section. (__USER_SIGNATURE_REGION_LENGTH__): Only define if USER_SIGNATURE_LENGTH is set. (MEMORY) [user_signatures]: Same. (SECTIONS) [.fuse]: Only define output section if FUSE_NAME = fuse. (SECTIONS) [.config]: Only define output section if FUSE_NAME = config.
2017-06-13ld: Add tests for -UrH.J. Lu5-0/+51
Test -Ur with __start_SECNAME, __stop_SECNAME, .startof.SECNAME and .sizeof.SECNAME. __start_SECNAME and __stop_SECNAME should be defined to the start and the end of section SECNAME. .startof.SECNAME and .sizeof.SECNAME should be undefined. * testsuite/ld-elf/sizeof.d: New file. * testsuite/ld-elf/sizeof.s: Likewise. * testsuite/ld-elf/startof.d: Likewise. * testsuite/ld-elf/startof.s: Likewise.
2017-06-13[LD][Testsuite] Add --no-dynamic-linker option to dynamic-1 rdynamic-1 test ↵Renlin Li2-2/+7
case. arm-none-eabi-ld supports shared libraries. However, the toolchain may be configured to generate statically linked executable by default. It is required to have --no-dynamic-linker option before adding dynamic symbol to static executable. For dynamically linked executable, the behavior won't change. ld/ChangeLog 2017-06-13 Renlin Li <renlin.li@arm.com> * testsuite/ld-elf/shared.exp (build_tests): Add --no-dynamic-linker option to rdynamic-1 and dynamic-1 tests.
2017-06-09x86-64: Add some x32 ELF property testsH.J. Lu10-4/+94
* testsuite/ld-x86-64/property-x86-3-x32.d: New file. * testsuite/ld-x86-64/property-x86-4a-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-4b-x32.d: Likewise. * testsuite/ld-x86-64/property-x86-3.d: Also pass -defsym __64_bit__=1 to asssembler. * testsuite/ld-x86-64/property-x86-4a.d: Likewise. * testsuite/ld-x86-64/property-x86-4b.d: Likewise. * testsuite/ld-x86-64/property-x86-3.s: Align to 4 bytes if __64_bit__ isn't defined. * testsuite/ld-x86-64/property-x86-4a.s: Likewise. * testsuite/ld-x86-64/property-x86-4b.s: Likewise. * testsuite/ld-x86-64/x86-64.exp: Run property-x86-3-x32, property-x86-4a-x32 and property-x86-4b-x32.
2017-06-09Revert "[AArch64] Allow COPY relocation elimination"Jiong Wang4-19/+0
This reverts commit bc327528fd2ccdc6c29ab6ae608085dddbad5cc8. This patch can only be committed after PC-relative relocation types support on copy relocation elimination is also completed.
2017-06-08[ARC] Fixed TLS for IE model.Cupertino Miranda2-2/+6
In the case of static relocation, the GOT entries are fixed at link time and are set by the linker. In order to compute the right TLS offset it is necessary to add TCB_SIZE to the offset, just in case the dynamic linker is not expected to be executed (static linked case). This problem does appear in dynamic linked applications, as the dynamic linker is adding this TCB_SIZE by operating the TCB block structure. Problem revealed in GLIBC with static linking. bfd/ChangeLog: Cupertino Miranda <cmiranda@synopsys.com> arc-got.h (relocate_fix_got_relocs_for_got_info): Added TCB_SIZE to patched section contents for TLS IE reloc. elf32-arc.c: Remove TCB_SIZE preprocessor macro. Rebase to 0006
2017-06-08x86: Dump local IFUNC functions in the map fileH.J. Lu4-2/+10
Dump local IFUNC functions in the map file when generating IRELATIVE relocations if -Map is used. bfd/ * elf32-i386.c (elf_i386_check_relocs): Set local IFUNC symbol name. Use local IFUNC symbol name string to report unsupported non-PIC call to IFUNC function. (elf_i386_relocate_section): Dump local IFUNC name with minfo when generating R_386_IRELATIVE relocation. (elf_i386_finish_dynamic_symbol): Likewise. * elf_x86_64_check_relocs (elf_x86_64_check_relocs): Set local IFUNC symbol name. (elf_x86_64_relocate_section): Dump local IFUNC name with minfo when generating R_X86_64_IRELATIVE relocation. (elf_x86_64_finish_dynamic_symbol): Likewise. ld/ * testsuite/ld-ifunc/ifunc-1-local-x86.d: Pass "-Map tmpdir/ifunc-1-local-x86.map" to ld and check ifunc-1-local-x86.map. * testsuite/ld-ifunc/ifunc-1-x86.d: Pass "-Map tmpdir/ifunc-1-x86.map" to ld and check ifunc-1-x86.map. * testsuite/ld-ifunc/ifunc-1-local-x86.map: New file. * testsuite/ld-ifunc/ifunc-1-x86.map: Likewise.
2017-06-08clH.J. Lu1-0/+10
2017-06-08[AArch64] Allow COPY relocation eliminationJiong Wang4-0/+19
As discussed at the PR, this patch tries to avoid COPY relocation generation and propagate the original relocation into runtime if it was relocating on writable section. The ELIMINATE_COPY_RELOCS has been set to true and it's underlying infrastructure has been improved so that the COPY reloc elimination at least working on absoluate relocations (ABS64) after this patch. bfd/ PR ld/21532 * elfnn-aarch64.c (ELIMINATE_COPY_RELOCS): Set to 1. (elfNN_aarch64_final_link_relocate): Also propagate relocations to runtime for copy relocation elimination cases. (alias_readonly_dynrelocs): New function. (elfNN_aarch64_adjust_dynamic_symbol): Keep the dynamic relocs instead of generating copy relocation if it is not against read-only sections. (elfNN_aarch64_check_relocs): Likewise. ld/ * testsuite/ld-aarch64/copy-reloc-eliminate.d: New test. * testsuite/ld-aarch64/copy-reloc-exe-eliminate.s: New test source file. * testsuite/ld-aarch64/aarch64-elf.exp: Run new testcase.
2017-06-07Fix a number of pr21529 testcase failuresAlan Modra2-4/+6
Various targets fail this testcase due to ld not supporting binary output. * testsuite/ld-unique/pr21529.d: xfail aarch64, arm, hppa, ia64, nds32, and score. Match any output.
2017-06-06ld: Fix spelling mistake in comment.Andrew Burgess2-1/+5
ld/ChangeLog: * ld.h (struct args_type): Fix typo in comment.
2017-06-06ld: Allow section groups to be resolved as part of a relocatable linkAndrew Burgess13-4/+112
This commit adds a new linker feature: the ability to resolve section groups as part of a relocatable link. Currently section groups are automatically resolved when performing a final link, and are carried through when performing a relocatable link. By carried through this means that one copy of each section group (from all the copies that might be found in all the input files) is placed into the output file. Sections that are part of a section group will not match input section specifiers within a linker script and are forcibly kept as separate sections. There is a slight resemblance between section groups and common section. Like section groups, common sections are carried through when performing a relocatable link, and resolved (allocated actual space) only at final link time. However, with common sections there is an ability to force the linker to allocate space for the common sections when performing a relocatable link, there's currently no such ability for section groups. This commit adds such a mechanism. This new facility can be accessed in two ways, first there's a command line switch --force-group-allocation, second, there's a new linker script command FORCE_GROUP_ALLOCATION. If one of these is used when performing a relocatable link then the linker will resolve the section groups as though it were performing a final link, the section group will be deleted, and the members of the group will be placed like normal input sections. If there are multiple copies of the group (from multiple input files) then only one copy of the group members will be placed, the duplicate copies will be discarded. Unlike common sections that have the --no-define-common command line flag, and INHIBIT_COMMON_ALLOCATION linker script command there is no way to prevent group resolution during a final link, this is because the ELF gABI specifically prohibits the presence of SHT_GROUP sections in a fully linked executable. However, the code as written should make adding such a feature trivial, setting the new resolve_section_groups flag to false during a final link should work as you'd expect. bfd/ChangeLog: * elf.c (_bfd_elf_make_section_from_shdr): Don't initially mark SEC_GROUP sections as SEC_EXCLUDE. (bfd_elf_set_group_contents): Replace use of abort with an assert. (assign_section_numbers): Use resolve_section_groups flag instead of relocatable link type. (_bfd_elf_init_private_section_data): Use resolve_section_groups flag instead of checking the final_link flag for part of the checks in here. Fix white space as a result. * elflink.c (elf_link_input_bfd): Use resolve_section_groups flag instead of relocatable link type. (bfd_elf_final_link): Likewise. include/ChangeLog: * bfdlink.h (struct bfd_link_info): Add new resolve_section_groups flag. ld/ChangeLog: * ld.h (struct args_type): Add force_group_allocation field. * ldgram.y: Add support for FORCE_GROUP_ALLOCATION. * ldlex.h: Likewise. * ldlex.l: Likewise. * lexsup.c: Likewise. * ldlang.c (unique_section_p): Check resolve_section_groups flag not the relaxable link flag. (lang_add_section): Discard section groups when we're resolving groups. Clear the SEC_LINK_ONCE flag if we're resolving section groups. * ldmain.c (main): Initialise resolve_section_groups flag in link_info based on command line flags. * testsuite/ld-elf/group11.d: New file. * testsuite/ld-elf/group12.d: New file. * testsuite/ld-elf/group12.ld: New file. * NEWS: Mention new features. * ld.texinfo (Options): Document --force-group-allocation. (Miscellaneous Commands): Document FORCE_GROUP_ALLOCATION.
2017-06-05Add a testcase for PR ld/21529H.J. Lu4-1/+29
PR ld/21529 * testsuite/ld-unique/pr21529.d: New file. * testsuite/ld-unique/pr21529.s: Likewise. * testsuite/ld-unique/unique.exp: Run *.d.
2017-06-05Fix --enable-new-dtags config supportAlan Modra6-7/+15
and testsuite when configured with --enable-new-dtags. * ldmain.c (main): Correct setting of link_indo.new_dtags. * testsuite/ld-elf/now-3.d: Pass --disable-new-dtags to ld * testsuite/ld-elf/now-4.d: Likewise. * testsuite/ld-elf/rpath-1.d: Likewise. * testsuite/ld-elf/rpath-2.d: Likewise.
2017-06-05Introduce --enable-new-dtags configure option.Slava Barinov5-5/+60
This option switches on ld.bfd --enable-new-dtags by default. * configure.ac: Add --enable-new-dtags option. * ldmain.c: Set link_info.new_dtags to 1 if when --enable-new-dtags is switched on. * configure: Regenerate. * config.in: Regenerate.
2017-06-02x86: Remove linker option: -z prefix-nopH.J. Lu5-29/+9
Since it is incorrect to convert bnd call *foo@GOTPCREL(%rip) to bnd nop call foo this patch removes the "-z prefix-nop" option from x86 linker. * emulparams/call_nop.sh: Remove -z prefix-nop. * ld.texinfo: Likewise. * testsuite/ld-i386/call3c.d: Check for linker error. * testsuite/ld-x86-64/call1c.d: Likewise.
2017-06-01PPC64_OPT_LOCALENTRYAlan Modra5-26/+57
ELFv2 functions with localentry:0 are those with a single entry point, ie. global entry == local entry, and that have no requirement on r2 or r12, and guarantee r2 is unchanged on return. Such an external function can be called via the PLT without saving r2 or restoring it on return, avoiding a common load-hit-store for small functions. The optimization is attractive. The TOC pointer load-hit-store is a major reason why calls to small functions that need no register saves, or with shrink-wrap, no register saves on a fast path, are slow on powerpc64le. To be safe, this optimization needs ld.so support to check that the run-time matches link-time function implementation. If a function in a shared library with st_other localentry non-zero is called without saving and restoring r2, r2 will be trashed on return, leading to segfaults. For that reason the optimization does not happen for weak functions since a weak definition is a fairly solid hint that the function will likely be overridden. I'm also not enabling the optimization by default unless glibc-2.26 is detected, which should have the ld.so checks implemented. bfd/ * elf64-ppc.c (struct ppc_link_hash_table): Add has_plt_localentry0. (ppc64_elf_merge_symbol_attribute): Merge localentry bits from dynamic objects. (is_elfv2_localentry0): New function. (ppc64_elf_tls_setup): Default params->plt_localentry0. (plt_stub_size): Adjust size for tls_get_addr_opt stub. (build_tls_get_addr_stub): Use a simpler stub when r2 is not saved. (ppc64_elf_size_stubs): Leave stub_type as ppc_stub_plt_call for optimized localentry:0 stubs. (ppc64_elf_build_stubs): Save r2 in ELFv2 __glink_PLTresolve. (ppc64_elf_relocate_section): Leave nop unchanged for optimized localentry:0 stubs. (ppc64_elf_finish_dynamic_sections): Set PPC64_OPT_LOCALENTRY in DT_PPC64_OPT. * elf64-ppc.h (struct ppc64_elf_params): Add plt_localentry0. include/ * elf/ppc64.h (PPC64_OPT_LOCALENTRY): Define. ld/ * emultempl/ppc64elf.em (params): Init plt_localentry0 field. (enum ppc64_opt): New, replacing OPTION_* defines. Add OPTION_PLT_LOCALENTRY, and OPTION_NO_PLT_LOCALENTRY. (PARSE_AND_LIST_*): Support --plt-localentry and --no-plt-localentry. * testsuite/ld-powerpc/elfv2so.d: Update. * testsuite/ld-powerpc/powerpc.exp (TLS opt 5): Use --no-plt-localentry. * testsuite/ld-powerpc/tlsopt5.d: Update.
2017-05-31PowerPC64 ld help quotingAlan Modra2-2/+6
* emultempl/ppc64elf.em (plt-static-chain help): Fix quoting.
2017-05-22[AArch64, ld] Support ILP32 triplet aarch64*-linux-gnu_ilp32Jiong Wang2-0/+14
This patch allows AArch64 LD defaulting to ILP32 if it is configured with aarch64*-linux-gnu_ilp32. ld/ * configure.tgt: Set "targ_emul" to "aarch64linux32b" for aarch64_be-*-linux-gnu_ilp32. Set "targ_emul" to "aarch64linux32" for aarch64-*-linux-gnu_ilp32.
2017-05-19x86: Add GC testcases with property sectionsH.J. Lu11-0/+108
Verify that debug section is removed by garbage collection when there is a .note.gnu.property section. * testsuite/ld-i386/i386.exp: Run property-x86-4a and property-x86-4b. * testsuite/ld-x86-64/x86-64.exp: Likewise. * testsuite/ld-i386/property-x86-4a.d: New file. * testsuite/ld-i386/property-x86-4a.s: Likewise. * testsuite/ld-i386/property-x86-4b.d: Likewise. * testsuite/ld-i386/property-x86-4b.s: Likewise. * testsuite/ld-x86-64/property-x86-4a.d: Likewise. * testsuite/ld-x86-64/property-x86-4a.s: Likewise. * testsuite/ld-x86-64/property-x86-4b.d: Likewise. * testsuite/ld-x86-64/property-x86-4b.s: Likewise.
2017-05-19Update avrxmega3 linker emulation to support avrxmega2 devices with flash ↵eorg-Johann Lay3-1/+61
memory visible in the SRAM address range. PR ld/21472 ld * emulparams/avrxmega3.sh (RODATA_PM_OFFSET): Set to 0x8000. * scripttempl/avr.sc (__RODATA_PM_OFFSET__) [RODATA_PM_OFFSET]: Use RODATA_PM_OFFSET as default if not already defined. (.data) [!RODATA_PM_OFFSET]: Don't include .rodata and friends. (.rodata) [RODATA_PM_OFFSET]: Put at an offset of __RODATA_PM_OFFSET__. gas * config/tc-avr.c (mcu_types): Add entries for: attiny416, attiny417, attiny816, attiny817.
2017-05-18Treat a prefix of "$SYSROOT" in the same way as "=" when parsing linker ↵Nick Clifton6-8/+40
search paths. PR ld/21251 * ldfile.c (ldfile_add_library_path): If the path starts with $SYSROOT then use the sysroot as the real prefix. * ldlang.c (lang_add_input_file): Treat $SYSROOT in the same way as =. * ldlex.l: Add $SYSROOT as allow prefix for a filename. * ld.texinfo (-L): Document that $SYSROOT acts like = when prefixing a library search path. (INPUT): Likewise. * testsuite/ld-scripts/sysroot-prefix.exp: Add $SYSROOT prefix tests.
generated by cgit v1.1 at 2024-12-15 01:44:45 +0000