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binutils-gdb/ld/emulparams/elf_i386_vxworks.sh

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2005-05-05 Paul Brook <paul@codesourcery.com> bfd/ * config.bfd: Use bfd_elf32_i386_vxworks_vec for i?86-*-vxworks. * configure.in: Add bfd_elf32_i386_vxworks_vec. i386 targets need elf-vxworks.lo. * configure: Regenerate. * Makefile.am (BFD32_BACKENDS): Add elf-vxworks.lo. (BFD32_BACKENDS_CFILES): Add elf-vxworks.c. (elf32-i386.lo): Depend on elf-vxworks.h. (elf-vxworks.lo): New rule. * Makefile.in: Regenerate. * elf-bfd.h (elf_backend_data): Update type of elf_backend_emit_relocs. (_bfd_elf_link_output_relocs): Update prototype. * elflink.c (_bfd_elf_link_output_relocs): Always use bed->elf_backend_emit_relocs when outputting relocations. * elfxx-target.h (elf_backend_emit_relocs): Default to _bfd_elf_link_output_relocs. * targets.c (bfd_elf32_i386_vxworks_vec): Declare. (_bfd_target_vector): Add bfd_elf32_i386_vxworks_vec. * elf32-i386.c: Add elf32-i386-vxworks target BFD. (elf_i386_plt0_entry): Remove padding. (elf_i386_pic_plt0_entry): Ditto. (PLTRESOLVE_RELOCS_SHLIB, PLTRESOLVE_RELOCS): Define. (PLT_NON_JUMP_SLOT_RELOCS): Define. (elf_i386_link_hash_table): Add srelplt2, hgot, hplt, is_vxworks and plt0_pad_byte fields. (elf_i386_link_hash_table_create): Zero them. (elf_i386_create_dynamic_sections): Create static relocation section. (allocate_dynrelocs): Allocate space for static PLT relocations. (elf_i386_size_dynamic_sections): Save shortcuts to PLT and GOT symbols. Give PLT symbols function type. Don't strip PLT sections if we have exported symbols from them. (elf_i386_finish_dynamic_symbol): Fill in VxWorks PLT static relocation section. Don't mark _GLOBAL_OFFSET_TABLE_ as absolute on VxWorks. (elf_i386_finish_dynamic_sections): Allow different pad bytes. Add relocation for GOT location. Fill in PLT static relocations. (elf_i386_vxworks_link_hash_table_create): New function. (elf_i386_vxworks_link_output_symbol_hook): New function. * elf-vxworks.h: New file. gas/ * config/tc-i386.h (ELF_TARGET_FORMAT): Define for TE_VXWORKS. gas/testsuite/ * gas/i386/i386.exp: Don't run divide test on vxworks. ld/ * Makefile.am: Add eelf_i386_vxworks. * Makefile.in: Regenerate. * configure.tgt: Make i?86-*-vxworks use targ_emul=elf_i386_vxworks. * emulparams/elf_i386_vxworks.sh: New file. * emulparams/vxworks.sh: New file. * scripttempl/elf.sc: Add DATA_END_SYMBOLS and ETEXT_NAME.
2005-05-05 22:37:27 +08:00
SCRIPT_NAME=elf
OUTPUT_FORMAT="elf32-i386-vxworks"
Check ELF relocs after opening all input files Delaying checking ELF relocations until opening all input files so that symbol information is final when relocations are checked. This is only enabled for x86 targets. bfd/ * elf-bfd.h (_bfd_elf_link_check_relocs): New. * elflink.c (_bfd_elf_link_check_relocs): New function. (elf_link_add_object_symbols): Call _bfd_elf_link_check_relocs if check_relocs_after_open_input is FALSE. include/ * bfdlink.h (bfd_link_info): Add check_relocs_after_open_input. ld/ * emulparams/elf32_x86_64.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): New. * emulparams/elf_i386.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/elf_i386_be.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/elf_i386_chaos.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/elf_i386_ldso.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/elf_i386_vxworks.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/elf_x86_64.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emulparams/i386nto.sh (CHECK_RELOCS_AFTER_OPEN_INPUT): Likewise. * emultempl/elf32.em (gld${EMULATION_NAME}_before_parse): Set check_relocs_after_open_input to TRUE if CHECK_RELOCS_AFTER_OPEN_INPUT is yes. (gld${EMULATION_NAME}_after_open): Call _bfd_elf_link_check_relocs on all inputs if check_relocs_after_open_input is TRUE.
2016-04-20 20:26:37 +08:00
CHECK_RELOCS_AFTER_OPEN_INPUT=yes
* scripttempl/elf.sc (NO_REL_RELOCS, NO_RELA_RELOCS, NON_ALLOC_DYN): Handle these defines. * emulparams/criself.sh, * emulparams/crislinux.sh, * emulparams/elf32am33lin.sh, * emulparams/elf32fr30.sh, * emulparams/elf32_i860.sh, * emulparams/elf32ip2k.sh, * emulparams/elf32mcore.sh, * emulparams/elf32ppccommon.sh, * emulparams/elf32ppcwindiss.sh, * emulparams/elf32_sparc.sh, * emulparams/elf32_spu.sh, * emulparams/elf32vax.sh, * emulparams/elf64alpha.sh, * emulparams/elf64mmix.sh, * emulparams/elf64ppc.sh, * emulparams/elf64_s390.sh, * emulparams/elf64_sparc.sh, * emulparams/elf_s390.sh, * emulparams/elf_x86_64.sh, * emulparams/h8300elf.sh, * emulparams/hppa64linux.sh, * emulparams/hppalinux.sh, * emulparams/m68kelf.sh, * emulparams/mn10200.sh, * emulparams/pjelf.sh, * emulparams/ppclynx.sh, * emulparams/shelf32.sh, * emulparams/shelf_nto.sh, * emulparams/shelf.sh, * emulparams/shelf_vxworks.sh, * emulparams/shlelf32_linux.sh, * emulparams/shlelf_linux.sh, * emulparams/shlelf_nto.sh (NO_REL_RELOCS): Set. * emulparams/arcelf.sh, * emulparams/elf32_i960.sh, * emulparams/elf32openrisc.sh, * emulparams/elf_i386_be.sh, * emulparams/elf_i386_ldso.sh, * emulparams/elf_i386.sh, * emulparams/elf_i386_vxworks.sh, * emulparams/i386lynx.sh, * emulparams/i386moss.sh, * emulparams/i386nto.sh, * emulparams/or32elf.sh, * emulparams/scoreelf.sh (NO_RELA_RELOCS): Set.
2008-10-22 13:20:44 +08:00
NO_RELA_RELOCS=yes
2005-05-05 Paul Brook <paul@codesourcery.com> bfd/ * config.bfd: Use bfd_elf32_i386_vxworks_vec for i?86-*-vxworks. * configure.in: Add bfd_elf32_i386_vxworks_vec. i386 targets need elf-vxworks.lo. * configure: Regenerate. * Makefile.am (BFD32_BACKENDS): Add elf-vxworks.lo. (BFD32_BACKENDS_CFILES): Add elf-vxworks.c. (elf32-i386.lo): Depend on elf-vxworks.h. (elf-vxworks.lo): New rule. * Makefile.in: Regenerate. * elf-bfd.h (elf_backend_data): Update type of elf_backend_emit_relocs. (_bfd_elf_link_output_relocs): Update prototype. * elflink.c (_bfd_elf_link_output_relocs): Always use bed->elf_backend_emit_relocs when outputting relocations. * elfxx-target.h (elf_backend_emit_relocs): Default to _bfd_elf_link_output_relocs. * targets.c (bfd_elf32_i386_vxworks_vec): Declare. (_bfd_target_vector): Add bfd_elf32_i386_vxworks_vec. * elf32-i386.c: Add elf32-i386-vxworks target BFD. (elf_i386_plt0_entry): Remove padding. (elf_i386_pic_plt0_entry): Ditto. (PLTRESOLVE_RELOCS_SHLIB, PLTRESOLVE_RELOCS): Define. (PLT_NON_JUMP_SLOT_RELOCS): Define. (elf_i386_link_hash_table): Add srelplt2, hgot, hplt, is_vxworks and plt0_pad_byte fields. (elf_i386_link_hash_table_create): Zero them. (elf_i386_create_dynamic_sections): Create static relocation section. (allocate_dynrelocs): Allocate space for static PLT relocations. (elf_i386_size_dynamic_sections): Save shortcuts to PLT and GOT symbols. Give PLT symbols function type. Don't strip PLT sections if we have exported symbols from them. (elf_i386_finish_dynamic_symbol): Fill in VxWorks PLT static relocation section. Don't mark _GLOBAL_OFFSET_TABLE_ as absolute on VxWorks. (elf_i386_finish_dynamic_sections): Allow different pad bytes. Add relocation for GOT location. Fill in PLT static relocations. (elf_i386_vxworks_link_hash_table_create): New function. (elf_i386_vxworks_link_output_symbol_hook): New function. * elf-vxworks.h: New file. gas/ * config/tc-i386.h (ELF_TARGET_FORMAT): Define for TE_VXWORKS. gas/testsuite/ * gas/i386/i386.exp: Don't run divide test on vxworks. ld/ * Makefile.am: Add eelf_i386_vxworks. * Makefile.in: Regenerate. * configure.tgt: Make i?86-*-vxworks use targ_emul=elf_i386_vxworks. * emulparams/elf_i386_vxworks.sh: New file. * emulparams/vxworks.sh: New file. * scripttempl/elf.sc: Add DATA_END_SYMBOLS and ETEXT_NAME.
2005-05-05 22:37:27 +08:00
TEXT_START_ADDR=0x08048000
bfd/ 2006-05-30 H.J. Lu <hongjiu.lu@intel.com> * bfd.c (bfd_emul_get_maxpagesize): New. (bfd_elf_set_pagesize): Likewise. (bfd_emul_set_maxpagesize): Likewise. (bfd_emul_get_commonpagesize): Likewise. (bfd_emul_set_commonpagesize): Likewise. * bfd-in2.h: Regenerated. * elf-bfd.h (elf_backend_data): Add commonpagesize. (xvec_get_elf_backend_data): New. (get_elf_backend_data): Use xvec_get_elf_backend_data. * elf32-arm.c (elf32_arm_vxworks_bed): Remove const. * elfxx-target.h (elfNN_bed): Likewise. * elf32-arm.c (ELF_COMMONPAGESIZE): Defined. * elf32-mips.c (ELF_COMMONPAGESIZE): Likewise. * elf32-ppc.c (ELF_COMMONPAGESIZE): Likewise. * elf32-sh.c (ELF_COMMONPAGESIZE): Likewise. * elf32-sh64.c (ELF_COMMONPAGESIZE): Likewise. * elf32-sparc.c (ELF_COMMONPAGESIZE): Likewise. * elf64-alpha.c (ELF_COMMONPAGESIZE): Likewise. * elf64-ppc.c (ELF_COMMONPAGESIZE): Likewise. * elf64-sparc.c (ELF_COMMONPAGESIZE): Likewise. * elf64-x86-64.c (ELF_COMMONPAGESIZE): Likewise. * elfn32-mips.c (ELF_COMMONPAGESIZE): Likewise. * elfxx-ia64.c (ELF_COMMONPAGESIZE): Likewise. * elfxx-target.h (ELF_COMMONPAGESIZE): Define if not defined. (elfNN_bed): Initialize commonpagesize with ELF_COMMONPAGESIZE. * targets.c (bfd_find_target): Support NULL abfd. ld/ 2006-05-30 H.J. Lu <hongjiu.lu@intel.com> * emulparams/arcelf.sh (MAXPAGESIZE): Changed to "CONSTANT (MAXPAGESIZE)". * emulparams/armelf_nbsd.sh: Likewise. * emulparams/armelf_vxworks.sh: Likewise. * emulparams/armnto.sh: Likewise. * emulparams/armsymbian.sh: Likewise. * emulparams/crislinux.sh: Likewise. * emulparams/elf32_i860.sh: Likewise. * emulparams/elf32_i960.sh: Likewise. * emulparams/elf32am33lin.sh: Likewise. * emulparams/elf32bfinfd.sh: Likewise. * emulparams/elf32bmipn32-defs.sh: Likewise. * emulparams/elf32frvfd.sh: Likewise. * emulparams/elf32i370.sh: Likewise. * emulparams/elf32lppcnto.sh: Likewise. * emulparams/elf32mcore.sh: Likewise. * emulparams/elf32openrisc.sh: Likewise. * emulparams/elf32ppcnto.sh: Likewise. * emulparams/elf32ppcwindiss.sh: Likewise. * emulparams/elf32vax.sh: Likewise. * emulparams/elf32xc16x.sh: Likewise. * emulparams/elf32xc16xl.sh: Likewise. * emulparams/elf32xc16xs.sh: Likewise. * emulparams/elf64_aix.sh: Likewise. * emulparams/elf64hppa.sh: Likewise. * emulparams/elf64mmix.sh: Likewise. * emulparams/elf_i386_be.sh: Likewise. * emulparams/elf_i386_chaos.sh: Likewise. * emulparams/elf_i386_ldso.sh: Likewise. * emulparams/hppa64linux.sh: Likewise. * emulparams/hppalinux.sh: Likewise. * emulparams/hppaobsd.sh: Likewise. * emulparams/i386lynx.sh: Likewise. * emulparams/i386moss.sh: Likewise. * emulparams/i386nto.sh: Likewise. * emulparams/i386nw.sh: Likewise. * emulparams/m32relf_linux.sh: Likewise. * emulparams/m68kpsos.sh: Likewise. * emulparams/or32elf.sh: Likewise. * emulparams/pjelf.sh: Likewise. * emulparams/pjlelf.sh: Likewise. * emulparams/ppclynx.sh: Likewise. * emulparams/ppcnw.sh: Likewise. * emulparams/shelf32_nbsd.sh : Likewise. * emulparams/shelf_nbsd.sh: Likewise. * emulparams/shelf_nto.sh: Likewise. * emulparams/shlelf_nto.sh: Likewise. * emulparams/xtensa-config.sh: Likewise. * emulparams/armelf_linux.sh (MAXPAGESIZE): Changed to "CONSTANT (MAXPAGESIZE)". (COMMONPAGESIZE): Changed to "CONSTANT (COMMONPAGESIZE)". * emulparams/elf32_sparc.sh: Likewise. * emulparams/elf32bmip.sh: Likewise. * emulparams/elf32ppccommon.sh: Likewise. * emulparams/elf64_ia64.sh: Likewise. * emulparams/elf64_s390.sh: Likewise. * emulparams/elf64_sparc.sh: Likewise. * emulparams/elf64alpha.sh: Likewise. * emulparams/elf64ppc.sh: Likewise. * emulparams/elf_i386.sh: Likewise. * emulparams/elf_i386_vxworks.sh: Likewise. * emulparams/elf_s390.sh: Likewise. * emulparams/elf_x86_64.sh: Likewise. * emulparams/shlelf32_linux.sh: Likewise. * emulparams/shlelf_linux.sh: Likewise. * emulparams/elf32bmipn32.sh (COMMONPAGESIZE): Changed to "CONSTANT (COMMONPAGESIZE)". * emulparams/elf32btsmipn32.sh: Likewise. * emultempl/elf32.em (gld${EMULATION_NAME}_handle_option): Add "-z max-page-size=" and "-z common-page-size=". (gld${EMULATION_NAME}_list_options): Likewise. * ld.h (ld_config_type): Add maxpagesize and commonpagesize. * ld.texinfo: Document "-z max-page-size=" and "-z common-page-size=". * ldexp.c (exp_print_token): Handle CONSTANT. (fold_name): Likewise. * ldgram.y: Likewise. * ldlex.l: Likewise. * ldmain.c (main): Initiliaze config.maxpagesize and config.commonpagesize. Call bfd_emul_set_maxpagesize if config.maxpagesize isn't 0. Call bfd_emul_set_commonpagesize if config.commonpagesize config.maxpagesize isn't 0. ld/testsuite/ 2006-05-30 H.J. Lu <hongjiu.lu@intel.com> * ld-elf/binutils.exp: New file. * ld-elf/commonpage1.d: Likewise. * ld-elf/maxpage1.d: Likewise. * ld-elf/maxpage1.s: Likewise.
2006-05-31 00:45:32 +08:00
MAXPAGESIZE="CONSTANT (MAXPAGESIZE)"
COMMONPAGESIZE="CONSTANT (COMMONPAGESIZE)"
2005-05-05 Paul Brook <paul@codesourcery.com> bfd/ * config.bfd: Use bfd_elf32_i386_vxworks_vec for i?86-*-vxworks. * configure.in: Add bfd_elf32_i386_vxworks_vec. i386 targets need elf-vxworks.lo. * configure: Regenerate. * Makefile.am (BFD32_BACKENDS): Add elf-vxworks.lo. (BFD32_BACKENDS_CFILES): Add elf-vxworks.c. (elf32-i386.lo): Depend on elf-vxworks.h. (elf-vxworks.lo): New rule. * Makefile.in: Regenerate. * elf-bfd.h (elf_backend_data): Update type of elf_backend_emit_relocs. (_bfd_elf_link_output_relocs): Update prototype. * elflink.c (_bfd_elf_link_output_relocs): Always use bed->elf_backend_emit_relocs when outputting relocations. * elfxx-target.h (elf_backend_emit_relocs): Default to _bfd_elf_link_output_relocs. * targets.c (bfd_elf32_i386_vxworks_vec): Declare. (_bfd_target_vector): Add bfd_elf32_i386_vxworks_vec. * elf32-i386.c: Add elf32-i386-vxworks target BFD. (elf_i386_plt0_entry): Remove padding. (elf_i386_pic_plt0_entry): Ditto. (PLTRESOLVE_RELOCS_SHLIB, PLTRESOLVE_RELOCS): Define. (PLT_NON_JUMP_SLOT_RELOCS): Define. (elf_i386_link_hash_table): Add srelplt2, hgot, hplt, is_vxworks and plt0_pad_byte fields. (elf_i386_link_hash_table_create): Zero them. (elf_i386_create_dynamic_sections): Create static relocation section. (allocate_dynrelocs): Allocate space for static PLT relocations. (elf_i386_size_dynamic_sections): Save shortcuts to PLT and GOT symbols. Give PLT symbols function type. Don't strip PLT sections if we have exported symbols from them. (elf_i386_finish_dynamic_symbol): Fill in VxWorks PLT static relocation section. Don't mark _GLOBAL_OFFSET_TABLE_ as absolute on VxWorks. (elf_i386_finish_dynamic_sections): Allow different pad bytes. Add relocation for GOT location. Fill in PLT static relocations. (elf_i386_vxworks_link_hash_table_create): New function. (elf_i386_vxworks_link_output_symbol_hook): New function. * elf-vxworks.h: New file. gas/ * config/tc-i386.h (ELF_TARGET_FORMAT): Define for TE_VXWORKS. gas/testsuite/ * gas/i386/i386.exp: Don't run divide test on vxworks. ld/ * Makefile.am: Add eelf_i386_vxworks. * Makefile.in: Regenerate. * configure.tgt: Make i?86-*-vxworks use targ_emul=elf_i386_vxworks. * emulparams/elf_i386_vxworks.sh: New file. * emulparams/vxworks.sh: New file. * scripttempl/elf.sc: Add DATA_END_SYMBOLS and ETEXT_NAME.
2005-05-05 22:37:27 +08:00
ARCH=i386
MACHINE=
TEMPLATE_NAME=elf32
GENERATE_SHLIB_SCRIPT=yes
GENERATE_PIE_SCRIPT=yes
NO_SMALL_DATA=yes
. ${srcdir}/emulparams/vxworks.sh
Add -z noextern-protected-data to ld for ELF/x86 Address of protected data defined in the shared library may be external, i.e., due to copy relocation. By default, linker backend checks if relocations against protected data symbols are valid for building shared library and issues an error if relocation isn't allowed. The new option override linker backend default. When -z noextern-protected-data is used, updates on protected data symbols by another module won't be visibile to the resulting shared library. This option is specific to ELF/i386 and ELF/x86-64. bfd/ PR ld/pr17709 * elflink.c (_bfd_elf_adjust_dynamic_copy): Check info->extern_protected_data when warning copy relocs against protected symbols. (_bfd_elf_symbol_refs_local_p): Check info->extern_protected_data when checking protected non-function symbols. include/ PR ld/pr17709 * bfdlink.h (bfd_link_info): Add extern_protected_data. ld/ PR ld/pr17709 * ld.texinfo: Document "-z noextern-protected-data". * ldmain.c (main): Initialize link_info.extern_protected_data to -1. * lexsup.c (elf_shlib_list_options): Add "-z [no]extern-protected-data". * emulparams/elf32_x86_64.sh: Source extern_protected_data.sh. * emulparams/elf_i386.sh: Likewise. * emulparams/elf_i386_be.sh: Likewise. * emulparams/elf_i386_chaos.sh: Likewise. * emulparams/elf_i386_ldso.sh: Likewise. * emulparams/elf_i386_vxworks.sh: Likewise. * emulparams/elf_k1om.sh: Likewise. * emulparams/elf_l1om.sh: Likewise. * emulparams/elf_x86_64.sh: Source extern_protected_data.sh. (PARSE_AND_LIST_OPTIONS): Renamed to ... (PARSE_AND_LIST_OPTIONS_BNDPLT): This. (PARSE_AND_LIST_ARGS_CASE_Z): Renamed to ... (PARSE_AND_LIST_ARGS_CASE_Z_BNDPLT): This. (PARSE_AND_LIST_OPTIONS): Append $PARSE_AND_LIST_OPTIONS_BNDPLT. (PARSE_AND_LIST_ARGS_CASE_Z): Append $PARSE_AND_LIST_ARGS_CASE_Z_BNDPLT. * emulparams/extern_protected_data.sh: New file. ld/testsuite/ PR ld/pr17709 * ld-i386/i386.exp: Run protected6b. * ld-i386/protected6b.d: New file. * ld-x86-64/protected6b.d: Likewise. * ld-x86-64/x86-64.exp: Run protected6b.
2015-04-14 19:12:55 +08:00
. ${srcdir}/emulparams/extern_protected_data.sh
[x86] Resolve non-PIC undefweak symbols in executable For i386 and x86-64, non-PIC references to undefined weak symbols are resolved without dynamic relocation when creating executable. Resolved undefined weak symbols are removed from the dynamic symbol table in executable. One exception is on i386, we need resolved undefined weak symbols in the dynamic symbol table in PIE if input relocatable files contain branchs without PLT so that we can branch to 0 with dynamic relocation in text section. This makes behaviors of dynamic executable and position independent executable predictable with mixed PIC and non-PIC references to undefined weak symbols. If all references to undefined weak symbols are PIC, dynamic relocations against undefined weak symbols will be generated in executable unless -z nodynamic-undefined-weak is passed to linker. bfd/ PR ld/19636 PR ld/19704 PR ld/19719 * elf32-i386.c (UNDEFINED_WEAK_RESOLVED_TO_ZERO): New. (elf_i386_link_hash_entry): Add has_got_reloc and has_non_got_reloc. (elf_i386_link_hash_table): Add interp. (elf_i386_link_hash_newfunc): Initialize has_got_reloc and has_non_got_reloc. (elf_i386_copy_indirect_symbol): Copy has_got_reloc and has_non_got_reloc. (elf_i386_check_relocs): Set has_got_reloc and has_non_got_reloc. (elf_i386_fixup_symbol): New function. (elf_i386_pie_finish_undefweak_symbol): Likewise. (elf_i386_allocate_dynrelocs): Don't allocate space for dynamic relocations and discard relocations against resolved undefined weak symbols in executable. Don't make resolved undefined weak symbols in executable dynamic. Keep dynamic non-GOT/non-PLT relocation against undefined weak symbols in PIE. (elf_i386_size_dynamic_sections): Set interp to .interp section. (elf_i386_relocate_section): Don't generate dynamic relocations against resolved undefined weak symbols in PIE, except for R_386_PC32. (elf_i386_finish_dynamic_symbol): Keep PLT/GOT entries without dynamic PLT/GOT relocations for resolved undefined weak symbols. Don't generate dynamic relocation against resolved undefined weak symbol in executable. (elf_i386_finish_dynamic_sections): Call elf_i386_pie_finish_undefweak_symbol on all symbols in PIE. (elf_backend_fixup_symbol): New. * elf64-x86-64.c (UNDEFINED_WEAK_RESOLVED_TO_ZERO): New. (elf_x86_64_link_hash_entry): Add has_got_reloc and has_non_got_reloc. (elf_x86_64_link_hash_table): Add interp. (elf_x86_64_link_hash_newfunc): Initialize has_got_reloc and has_non_got_reloc. (elf_x86_64_copy_indirect_symbol): Copy has_got_reloc and has_non_got_reloc. (elf_x86_64_check_relocs): Set has_got_reloc and has_non_got_reloc. (elf_x86_64_fixup_symbol): New function. (elf_x86_64_pie_finish_undefweak_symbol): Likewise. (elf_x86_64_allocate_dynrelocs): Don't allocate space for dynamic relocations and discard relocations against resolved undefined weak symbols in executable. Don't make resolved undefined weak symbols in executable dynamic. (elf_x86_64_size_dynamic_sections): Set interp to .interp section. (elf_x86_64_relocate_section): Check relocation overflow for dynamic relocations against unresolved weak undefined symbols. Don't generate dynamic relocations against resolved weak undefined symbols in PIE. (elf_x86_64_finish_dynamic_symbol): Keep PLT/GOT entries without dynamic PLT/GOT relocations for resolved undefined weak symbols. Don't generate dynamic relocation against resolved undefined weak symbol in executable. (elf_x86_64_finish_dynamic_sections): Call elf_x86_64_pie_finish_undefweak_symbol on all symbols in PIE. (elf_backend_fixup_symbol): New. include/ PR ld/19636 PR ld/19704 PR ld/19719 * bfdlink.h (bfd_link_info): Add dynamic_undefined_weak. ld/ PR ld/19636 PR ld/19704 PR ld/19719 * Makefile.am (ELF_X86_DEPS): Add dynamic_undefined_weak.sh. * Makefile.in: Regenerated. * NEWS: Mention -z nodynamic-undefined-weak. * ld.texinfo: Document -z nodynamic-undefined-weak. * ldmain.c (main): Initialize dynamic_undefined_weak to -1. * emulparams/dynamic_undefined_weak.sh: New file. * emulparams/elf32_x86_64.sh: Source dynamic_undefined_weak.sh. * emulparams/elf_i386.sh: Likewise. * emulparams/elf_i386_be.sh: Likewise. * emulparams/elf_i386_chaos.sh: Likewise. * emulparams/elf_i386_ldso.sh: Likewise. * emulparams/elf_i386_vxworks.sh: Likewise. * emulparams/elf_iamcu.sh: Likewise. * emulparams/elf_k1om.sh: Likewise. * emulparams/elf_l1om.sh: Likewise. * emulparams/elf_x86_64.sh: Likewise. * emulparams/extern_protected_data.sh (PARSE_AND_LIST_OPTIONS): Append. (PARSE_AND_LIST_ARGS_CASE_Z): Likewise. * testsuite/ld-elf/pr19719a.c: New file. * testsuite/ld-elf/pr19719b.c: Likewise. * testsuite/ld-elf/pr19719c.c: Likewise. * testsuite/ld-elf/pr19719d.c: Likewise. * testsuite/ld-i386/pr19636-1.s: Likewise. * testsuite/ld-i386/pr19636-1a.d: Likewise. * testsuite/ld-i386/pr19636-1b.d: Likewise. * testsuite/ld-i386/pr19636-1c.d: Likewise. * testsuite/ld-i386/pr19636-1d-nacl.d: Likewise. * testsuite/ld-i386/pr19636-1d.d: Likewise. * testsuite/ld-i386/pr19636-1e.d: Likewise. * testsuite/ld-i386/pr19636-1f.d: Likewise. * testsuite/ld-i386/pr19636-1g.d: Likewise. * testsuite/ld-i386/pr19636-1h.d: Likewise. * testsuite/ld-i386/pr19636-1i.d: Likewise. * testsuite/ld-i386/pr19636-2.s: Likewise. * testsuite/ld-i386/pr19636-2a.d: Likewise. * testsuite/ld-i386/pr19636-2b.d: Likewise. * testsuite/ld-i386/pr19636-2c-nacl.d: Likewise. * testsuite/ld-i386/pr19636-2c.d: Likewise. * testsuite/ld-i386/pr19636-2d-nacl.d: Likewise. * testsuite/ld-i386/pr19636-2d.d: Likewise. * testsuite/ld-i386/pr19636-2e-nacl.d: Likewise. * testsuite/ld-i386/pr19636-2e.d: Likewise. * testsuite/ld-i386/pr19636-3.s: Likewise. * testsuite/ld-i386/pr19636-3a.d: Likewise. * testsuite/ld-i386/pr19636-3b.d: Likewise. * testsuite/ld-i386/pr19636-3c.d: Likewise. * testsuite/ld-i386/pr19636-3d.d: Likewise. * testsuite/ld-i386/pr19636-3e.d: Likewise. * testsuite/ld-i386/pr19636-3f.d: Likewise. * testsuite/ld-i386/pr19636-3g.d: Likewise. * testsuite/ld-i386/pr19636-4.s: Likewise. * testsuite/ld-i386/pr19636-4a.d: Likewise. * testsuite/ld-i386/pr19636-4b.d: Likewise. * testsuite/ld-i386/pr19636-4c.d: Likewise. * testsuite/ld-i386/pr19636-4d.d: Likewise. * testsuite/ld-i386/pr19704.out: Likewise. * testsuite/ld-i386/pr19704a.c: Likewise. * testsuite/ld-i386/pr19704b.c: Likewise. * testsuite/ld-x86-64/pr19636-1.s: Likewise. * testsuite/ld-x86-64/pr19636-1a.d: Likewise. * testsuite/ld-x86-64/pr19636-1b.d: Likewise. * testsuite/ld-x86-64/pr19636-1c.d: Likewise. * testsuite/ld-x86-64/pr19636-1d.d: Likewise. * testsuite/ld-x86-64/pr19636-1e.d: Likewise. * testsuite/ld-x86-64/pr19636-1f.d: Likewise. * testsuite/ld-x86-64/pr19636-1g.d: Likewise. * testsuite/ld-x86-64/pr19636-2.s: Likewise. * testsuite/ld-x86-64/pr19636-2a.d: Likewise. * testsuite/ld-x86-64/pr19636-2b.d: Likewise. * testsuite/ld-x86-64/pr19636-2c.d: Likewise. * testsuite/ld-x86-64/pr19636-2d-nacl.d: Likewise. * testsuite/ld-x86-64/pr19636-2d.d: Likewise. * testsuite/ld-x86-64/pr19636-2e.d: Likewise. * testsuite/ld-x86-64/pr19636-2f.d: Likewise. * testsuite/ld-x86-64/pr19636-2g.d: Likewise. * testsuite/ld-x86-64/pr19636-2h.d: Likewise. * testsuite/ld-x86-64/pr19636-2i.d: Likewise. * testsuite/ld-x86-64/pr19636-3.s: Likewise. * testsuite/ld-x86-64/pr19636-3a.d: Likewise. * testsuite/ld-x86-64/pr19636-3b.d: Likewise. * testsuite/ld-x86-64/pr19636-3c.d: Likewise. * testsuite/ld-x86-64/pr19636-3d.d: Likewise. * testsuite/ld-x86-64/pr19704.out: Likewise. * testsuite/ld-x86-64/pr19704a.c: Likewise. * testsuite/ld-x86-64/pr19704b.c: Likewise. * testsuite/ld-elf/shared.exp (mix_pic_and_non_pic): New. Run mix_pic_and_non_pic. * testsuite/ld-i386/i386.exp (undefined_weak): New. Run undefined_weak and PR ld/19636 tests. * testsuite/ld-x86-64/x86-64.exp: Likewise. * testsuite/ld-x86-64/pr13082-3b.d: Updated. * testsuite/ld-x86-64/pr13082-4b.d: Likewise.
2016-02-26 20:16:15 +08:00
. ${srcdir}/emulparams/dynamic_undefined_weak.sh
Add "-z call-nop=PADDING" option to ld The ld linker can transform indirect call to a locally defined function, foo, via its GOT slot, to either "NOP call foo" or "call foo NOP" where NOP is a 1-byte NOP padding. This patch adds a "-z call-nop=PADDING" option to x86 ld to control 1-byte NOP padding for x86 call instruction. PADDING is one of prefix-addr, prefix-nop, suffix-nop, prefix-NUMBER or suffix-NUMBER. bfd/ * elf32-i386.c (elf_i386_convert_load): Use call_nop_byte and check call_nop_as_suffix for 1-byte NOP padding to pad call. * elf64-x86-64.c (elf_x86_64_convert_load): Likewise. include/ * bfdlink.h (bfd_link_info): Add call_nop_as_suffix and call_nop_byte. ld/ * ld/ld.texinfo: Document "-z call-nop=PADDING" option. * emulparams/call_nop.sh: New file. * emulparams/elf_i386_be.sh: Source ${srcdir}/emulparams/call_nop.sh. * emulparams/elf_i386_chaos.sh: Likewise. * emulparams/elf_i386_ldso.sh: Likewise. * emulparams/elf_i386_vxworks.sh: Likewise. * emulparams/elf_iamcu.sh: Likewise. * emulparams/elf_k1om.sh: Likewise. * emulparams/elf_l1om.sh: Likewise. * emulparams/elf_x86_64.sh: Likewise. * emultempl/elf32.em (gld${EMULATION_NAME}_before_parse): Set link_info.call_nop_byte if $CALL_NOP_BYTE isn't empty. ld/testsuite/ * ld-i386/call3.s: New file. * ld-i386/call3a.d: Likewise. * ld-i386/call3b.d: Likewise. * ld-i386/call3c.d: Likewise. * ld-i386/call3d.d: Likewise. * ld-i386/call3e.d: Likewise. * ld-i386/call3f.d: Likewise. * ld-i386/call3g.d: Likewise. * ld-i386/call3h.d: Likewise. * ld-i386/load1-nacl.d: Likewise. * ld-x86-64/call1.s: Likewise. * ld-x86-64/call1a.d: Likewise. * ld-x86-64/call1b.d: Likewise. * ld-x86-64/call1c.d: Likewise. * ld-x86-64/call1d.d: Likewise. * ld-x86-64/call1e.d: Likewise. * ld-x86-64/call1f.d: Likewise. * ld-x86-64/call1g.d: Likewise. * ld-x86-64/call1h.d: Likewise. * ld-x86-64/call1i.d: Likewise. * ld-x86-64/load1a-nacl.d: Likewise. * ld-x86-64/load1b-nacl.d: Likewise. * ld-x86-64/load1c-nacl.d: Likewise. * ld-x86-64/load1d-nacl.d: Likewise.
2015-10-22 19:53:04 +08:00
. ${srcdir}/emulparams/call_nop.sh
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