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2017-05-11Automatic date update in version.inGDB Administrator1-1/+1
2017-05-10bfd: fix the deletion of relocs in sparc64Jose E. Marchesi2-5/+25
This patch fixes the deletion of relocations in BFD sections in sparc64 targets. A specialized `_bfd_set_reloc' function is provided that updates the internal canon_reloc_count(sec) counter instead of sec->reloc_count. Additionally, the `write_relocs' callback in elf64-sparc is adapted to use the canon_reloc_count to traverse `sec->orelocation'. Tested in sparc64-linux-gnu targets. Fixes an existing failure in the merge-notes objcopy test. No regressions. bfd/ChangeLog: 2017-05-10 Jose E. Marchesi <jose.marchesi@oracle.com> * elf64-sparc.c (elf64_sparc_set_reloc): New function. (bfd_elf64_set_reloc): Define. (elf64_sparc_write_relocs): Use `canon_reloc_count'.
2017-05-10bfd: new BFD target entry point _bfd_set_reloc.Jose E. Marchesi27-10/+124
This patch adds a new entry point to the BFD_JUMP_TABLE_RELOCS. The previous common implementation `bfd_set_reloc', in bfd/bfd.c, has been moved to bfd/reloc.c with the name `_bfd_generic_set_reloc', and all BFD targets has been adapted to use it. This patch doesn't introduce any change on functionality, but prepares the ground for further work. bfd/ChangeLog: 2017-05-10 Jose E. Marchesi <jose.marchesi@oracle.com> * targets.c (BFD_JUMP_TABLE_RELOCS): Add NAME##_set_reloc. (struct bfd_target): New field _bfd_set_reloc. * bfd.c (bfd_set_reloc): Call backend _set_bfd. * reloc.c (_bfd_generic_set_reloc): New function. * coffcode.h (coff_set_reloc): Define to _bfd_generic_set_reloc. * nlm-target.h (nlm_set_reloc): Likewise. * coff-rs6000.c (_bfd_xcoff_set_reloc): Likewise. * aout-tic30.c (MY_set_reloc): Likewise. * aout-target.h (MY_set_reloc): Likewise. * elfxx-target.h (bfd_elfNN_set_reloc): Likewise. * coff-alpha.c (_bfd_ecoff_set_reloc): Likewise. * mach-o-target.c (bfd_mach_o_set_reloc): Likewise. * vms-alpha.c (alpha_vms_set_reloc): Likewise. * aout-adobe.c (aout_32_set_reloc): Likewise. * bout.c (b_out_set_reloc): Likewise. * coff-mips.c (_bfd_ecoff_set_reloc): Likewise. * i386os9k.c (aout_32_set_reloc): Likewise. * ieee.c (ieee_set_reloc): Likewise. * oasys.c (oasys_set_reloc): Likewise. * som.c (som_set_reloc): Likewise. * versados.c (versados_set_reloc): Likewise. * coff64-rs6000.c (rs6000_xcoff64_vec): Add _bfd_generic_set_reloc. (rs6000_xcoff64_aix_vec): LIkewise. * libbfd.c (_bfd_norelocs_set_reloc): New function. * libbfd-in.h: Prototype for _bfd_norelocs_set_reloc. * i386msdos.c (msdos_set_reloc): Define to _bfd_norelocs_set_reloc. * elfcode.h (elf_set_reloc): Define. * bfd-in2.h: Regenerated.
2017-05-10x86-64: Use .plt.bnd for IFUNC function addressH.J. Lu2-2/+18
When -z bndplt is used, we must use the .plt.bnd entry for IFUNC function address. bfd/ PR ld/21481 * elf64-x86-64.c (elf_x86_64_finish_dynamic_symbol): Use .plt.bnd for IFUNC function address. ld/ PR ld/21481 * testsuite/ld-x86-64/pr21481a.c: New file. * testsuite/ld-x86-64/pr21481b.S: Likewise. * testsuite/ld-x86-64/x86-64.exp: Run PR ld/21481 tests.
2017-05-10[ARC] Object attributes.Claudiu Zissulescu2-12/+450
gas/ 2017-05-10 Claudiu Zissulescu <claziss@synopsys.com> * testsuite/gas/arc/attr-arc600.d: New file. * testsuite/gas/arc/attr-arc600_mul32x16.d: Likewise. * testsuite/gas/arc/attr-arc600_norm.d: Likewise. * testsuite/gas/arc/attr-arc601.d: Likewise. * testsuite/gas/arc/attr-arc601_mul32x16.d: Likewise. * testsuite/gas/arc/attr-arc601_mul64.d: Likewise. * testsuite/gas/arc/attr-arc601_norm.d: Likewise. * testsuite/gas/arc/attr-arc700.d: Likewise. * testsuite/gas/arc/attr-arcem.d: Likewise. * testsuite/gas/arc/attr-archs.d: Likewise. * testsuite/gas/arc/attr-autodetect-1.d: Likewise. * testsuite/gas/arc/attr-autodetect-1.s: Likewise. * testsuite/gas/arc/attr-cpu-a601.d: Likewise. * testsuite/gas/arc/attr-cpu-a601.s: Likewise. * testsuite/gas/arc/attr-cpu-a700.d: Likewise. * testsuite/gas/arc/attr-cpu-a700.s: Likewise. * testsuite/gas/arc/attr-cpu-em.d: Likewise. * testsuite/gas/arc/attr-cpu-em.s: Likewise. * testsuite/gas/arc/attr-cpu-hs.d: Likewise. * testsuite/gas/arc/attr-cpu-hs.s: Likewise. * testsuite/gas/arc/attr-em.d: Likewise. * testsuite/gas/arc/attr-em4.d: Likewise. * testsuite/gas/arc/attr-em4_dmips.d: Likewise. * testsuite/gas/arc/attr-em4_fpuda.d: Likewise. * testsuite/gas/arc/attr-em4_fpus.d: Likewise. * testsuite/gas/arc/attr-hs.d: Likewise. * testsuite/gas/arc/attr-hs34.d: Likewise. * testsuite/gas/arc/attr-hs38.d: Likewise. * testsuite/gas/arc/attr-hs38_linux.d: Likewise. * testsuite/gas/arc/attr-mul64.d: Likewise. * testsuite/gas/arc/attr-name.d: Likewise. * testsuite/gas/arc/attr-name.s: Likewise. * testsuite/gas/arc/attr-nps400.d: Likewise. * testsuite/gas/arc/attr-override-mcpu.d: Likewise. * testsuite/gas/arc/attr-override-mcpu.s * testsuite/gas/arc/attr-quarkse_em.d: Likewise. * testsuite/gas/arc/blank.s: Likewise. * testsuite/gas/elf/section2.e-arc: Likewise. * testsuite/gas/arc/cpu-pseudop-1.d: Update test. * testsuite/gas/arc/cpu-pseudop-2.d: Likewise. * testsuite/gas/arc/nps400-0.d: Likewise. * testsuite/gas/elf/elf.exp: Set target_machine for ARC. * config/tc-arc.c (opcode/arc-attrs.h): Include. (ARC_GET_FLAG, ARC_SET_FLAG, streq): Define. (arc_attribute): Declare new function. (md_pseudo_table): Add arc_attribute. (cpu_types): Rename default cpu features. (selected_cpu): Set the default OSABI flag. (mpy_option): New variable. (pic_option): Likewise. (sda_option): Likewise. (tls_option): Likewise. (feature_type, feature_list): Remove. (arc_initial_eflag): Likewise. (attributes_set_explicitly): New variable. (arc_check_feature): Check also for the conflicting features. (arc_select_cpu): Refactor assignment of selected_cpu.eflags. (arc_option): Remove setting of private flags and architecture. (check_cpu_feature): Refactor feature names. (autodetect_attributes): New function. (assemble_tokens): Use above function. (md_parse_option): Refactor feature names. (arc_attribute): New function. (arc_set_attribute_int): Likewise. (arc_set_attribute_string): Likewise. (arc_stralloc): Likewise. (arc_set_public_attributes): Likewise. (arc_md_end): Likewise. (arc_copy_symbol_attributes): Likewise. (rc_convert_symbolic_attribute): Likewise. * config/tc-arc.h (md_end): Define. (CONVERT_SYMBOLIC_ATTRIBUTE): Likewise. (TC_COPY_SYMBOL_ATTRIBUTES): Likewise. * doc/c-arc.texi: Document ARC object attributes. binutils/ 2017-05-10 Claudiu Zissulescu <claziss@synopsys.com> * readelf.c (decode_ARC_machine_flags): Recognize OSABI v4. (get_arc_section_type_name): New function. (get_section_type_name): Use the above function. (display_arc_attribute): New function. (process_arc_specific): Likewise. (process_arch_specific): Handle ARC specific information. * testsuite/binutils-all/strip-3.d: Consider ARC.attributes section. include/ 2017-05-10 Claudiu Zissulescu <claziss@synopsys.com> * elf/arc.h (SHT_ARC_ATTRIBUTES): Define. (Tag_ARC_*): Define. (E_ARC_OSABI_V4): Define. (E_ARC_OSABI_CURRENT): Reassign it. (TAG_CPU_*): Define. * opcode/arc-attrs.h: New file. * opcode/arc.h (insn_subclass_t): Assign enum values. (insn_subclass_t): Update enum with QUARKSE1, QUARKSE2, and LL64. (ARC_EA, ARC_CD, ARC_LLOCK, ARC_ATOMIC, ARC_MPY, ARC_MULT) (ARC_NPS400, ARC_DPFP, ARC_SPFP, ARC_FPU, ARC_FPUDA, ARC_SWAP) (ARC_NORM, ARC_BSCAN, ARC_UIX, ARC_TSTAMP, ARC_VBFDW) (ARC_BARREL, ARC_DSPA, ARC_SHIFT, ARC_INTR, ARC_DIV, ARC_XMAC) (ARC_CRC): Delete. bfd/ 2017-05-10 Claudiu Zissulescu <claziss@synopsys.com> * elf32-arc.c (FEATURE_LIST_NAME): Define. (CONFLICT_LIST): Likewise. (opcode/arc-attrs.h): Include. (arc_elf_print_private_bfd_data): Print OSABI v4 flag. (arc_extract_features): New file. (arc_stralloc): Likewise. (arc_elf_merge_attributes): Likewise. (arc_elf_merge_private_bfd_data): Use object attributes. (bfd_arc_get_mach_from_attributes): New function. (arc_elf_object_p): Use object attributes. (arc_elf_final_write_processing): Likewise. (elf32_arc_obj_attrs_arg_type): New function. (elf32_arc_obj_attrs_handle_unknown): Likewise. (elf32_arc_section_from_shdr): Likewise. (elf_backend_obj_attrs_vendor): Define. (elf_backend_obj_attrs_section): Likewise. (elf_backend_obj_attrs_arg_type): Likewise. (elf_backend_obj_attrs_section_type): Likewise. (elf_backend_obj_attrs_handle_unknown): Likewise. (elf_backend_section_from_shdr): Likewise. ld/ 2017-05-10 Claudiu Zissulescu <claziss@synopsys.com> * testsuite/ld-arc/attr-merge-0.d: New file. * testsuite/ld-arc/attr-merge-0.s: Likewise. * testsuite/ld-arc/attr-merge-0e.s: Likewise. * testsuite/ld-arc/attr-merge-1.d: Likewise. * testsuite/ld-arc/attr-merge-1.s: Likewise. * testsuite/ld-arc/attr-merge-1e.s: Likewise. * testsuite/ld-arc/attr-merge-2.d: Likewise. * testsuite/ld-arc/attr-merge-2.s: Likewise. * testsuite/ld-arc/attr-merge-3.d: Likewise. * testsuite/ld-arc/attr-merge-3.s: Likewise. * testsuite/ld-arc/attr-merge-3e.s: Likewise. * testsuite/ld-arc/attr-merge-4.s: Likewise. * testsuite/ld-arc/attr-merge-5.d: Likewise. * testsuite/ld-arc/attr-merge-5a.s: Likewise. * testsuite/ld-arc/attr-merge-5b.s: Likewise. * testsuite/ld-arc/attr-merge-conflict-isa.d: Likewise. * testsuite/ld-arc/attr-merge-err-isa.d: Likewise. * testsuite/ld-arc/attr-merge-incompatible-cpu.d: Likewise. * testsuite/ld-arc/got-01.d: Update test. * testsuite/ld-arc/attr-merge-err-quarkse.d: New file. * testsuite/ld-arc/attr-quarkse.s: Likewise. * testsuite/ld-arc/attr-quarkse2.s: Likewise. opcodes/ 2017-05-10 Claudiu Zissulescu <claziss@synopsys.com> * arc-dis.c (parse_option): Update quarkse_em option.. * arc-ext-tbl.h (dsp_fp_flt2i, dsp_fp_i2flt): Change subclass to QUARKSE1. (dsp_fp_div, dsp_fp_cmp): Change subclass to QUARKSE2.
2017-05-10Automatic date update in version.inGDB Administrator1-1/+1
2017-05-09Fix resolution of R_ARM_THM_ALU_PREL_11_0 relocation against Thumb symbols.Andrew Goedhart2-0/+11
PR ld/21458 * elf32-arm.c (elf32_arm_final_link_relocate): Set the bottom bit of the value when resolving a R_ARM_THM_ALU_PREL_11_0 relocation and the destination is a Thumb symbol.
2017-05-09Automatic date update in version.inGDB Administrator1-1/+1
2017-05-08Add missing initializer to silence GCC 4.2H.J. Lu3-2/+8
Silence GCC 4.2: elf64-x86-64.c: In function ‘elf_x86_64_get_synthetic_symtab’: elf64-x86-64.c:6490: warning: missing initializer elf64-x86-64.c:6490: warning: (near initialization for ‘plts[3].sec’) * elf32-i386.c (elf_i386_get_synthetic_symtab): Add missing initializer for GCC 4.2. * lf64-x86-64.c (elf_x86_64_get_synthetic_symtab): Likewise.
2017-05-08x86-64: Improve PLT generation and synthetic PLT symbolsH.J. Lu2-521/+953
On x86-64, the procedure linkage table (PLT) is used to 1. Call external function. 2. Call internal IFUNC function. The best implementation is selected for the target processor at run-time. 3. Act as the canonical function address. 4. Support LD_AUDIT to audit external function calls. 5. Support LD_PROFILE to profile external function calls. PLT looks like: PLT0: push GOT[1] jmp *GOT[2] nop PLT1: jmp *GOT[name1_index] push name1_reloc_index jmp PLT0 GOT is an array of addresses. Initially the GOT entry of name1 is filled with the address of the "push name1_reloc_index" instruction. The function, name1, is called via "jmp *GOT[name1]" in the PLT entry. Even when lazy binding is disabled by "-z now", the PLT0 entry may still be used with LD_AUDIT or LD_PROFILE if PLT entry is used for canonical function address. When linker is invoked with "-z bndplt", a different PLT layout in .plt is used: PLT0: push GOT[1] bnd jmp *GOT[2] nop PLT1: push name1_reloc_index bnd jmp PLT0 nop together with a second PLT section, .pl.bnd: PLT1: bnd jmp *GOT[name1_index] nop where the GOT entry of name1 is filled with the address of the push instruction of the corresponding entry in .plt. 1. With lazy binding, when the external function, name1, is called the first time, dynamic linker is called via PLT0 to update GOT[name1_index] with the actual address of name1 and transfers control to name1 afterwards. 2. PLT is also used to call a local IFUNC function, name1, run-time loader updates GOT[name1_index] when loading the module. This patch 1. Remove PLT layout configurations from x86-64 backend_data. 2. Add generic, lay and non-lazy PLT layout configurations to x86-64 link_hash_table. Generic PLT layout includes the PLT entry templates, information how to update the first instruction in PLT and PLT eh_frame informaton, which are initialized in x86-64 setup_gnu_properties, based on "-z bndplt" and target selection. PLT section alignment is also set to PLT entry size for non-NaCl target. 3. Remove elf_x86_64_create_dynamic_sections. create_dynamic_sections isn't always called, but GOT relocations need GOT relocations. Instead, create all x86-64 specific dynamic sections with alignment to their entry size in x86-64 setup_gnu_properties, which initializes elf.dynobj, so that x86-64 check_relocs can be simplified. 4. Rewrite elf_x86_64_get_synthetic_symtab to check PLT sections against all dynamic relocations to support both lazy and non-lazy PLTs. There is no change in PLT. The only externally visible change is the improvement of synthetic PLT symbols for .plt.got. bfd/ * elf64-x86-64.c (PLT_ENTRY_SIZE): Renamed to ... (LAZY_PLT_ENTRY_SIZE): This. (NON_LAZY_PLT_ENTRY_SIZE): New. (elf_x86_64_plt0_entry): Renamed to ... (elf_x86_64_lazy_plt0_entry): This. (elf_x86_64_plt_entry): Renamed to ... (elf_x86_64_lazy_plt_entry): This. (elf_x86_64_bnd_plt0_entry): Renamed to ... (elf_x86_64_lazy_bnd_plt0_entry): This. (elf_x86_64_legacy_plt_entry): Removed. (elf_x86_64_bnd_plt_entry): Renamed to ... (elf_x86_64_lazy_bnd_plt_entry): This. (elf_x86_64_legacy_plt2_entry): Renamed to ... (elf_x86_64_non_lazy_plt_entry): This. (elf_x86_64_bnd_plt2_entry): Renamed to ... (elf_x86_64_non_lazy_bnd_plt_entry): This. (elf_x86_64_eh_frame_plt): Renamed to ... (elf_x86_64_eh_frame_lazy_plt): This. (elf_x86_64_eh_frame_bnd_plt): Renamed to ... (elf_x86_64_eh_frame_lazy_bnd_plt): This. (elf_x86_64_eh_frame_plt_got): Renamed to ... (elf_x86_64_eh_frame_non_lazy_plt): This. (elf_x86_64_lazy_plt_layout): New. (elf_x86_64_non_lazy_plt_layout): Likewise. (elf_x86_64_plt_layout): Likewise. (elf_x86_64_backend_data): Remove PLT layout information. Add os for target system. (GET_PLT_ENTRY_SIZE): Removed. (elf_x86_64_lazy_plt): New. (elf_x86_64_non_lazy_plt): Likewise. (elf_x86_64_lazy_bnd_plt): Likewise. (elf_x86_64_non_lazy_bnd_plt): Likewise. (elf_x86-64_arch_bed): Updated. (elf_x86_64_link_hash_table): Add plt, lazy_plt and non_lazy_plt. (elf_x86_64_create_dynamic_sections): Removed. (elf_x86_64_check_relocs): Don't check elf.dynobj. Don't call _bfd_elf_create_ifunc_sections nor _bfd_elf_create_got_section. (elf_x86-64_adjust_dynamic_symbol): Updated. (elf_x86_64_allocate_dynrelocs): Updated. Pass 0 as PLT header size to _bfd_elf_allocate_ifunc_dyn_relocs and don't allocate size for PLT0 if there is no PLT0. Get plt_entry_size from non_lazy_plt for non-lazy PLT entries. (elf_x86_64_size_dynamic_sections): Updated. Get plt_entry_size from non_lazy_plt for non-lazy PLT entries. (elf_x86-64_relocate_section): Updated. Properly get PLT index if there is no PLT0. (elf_x86_64_finish_dynamic_symbol): Updated. Fill the first slot in the PLT entry with generic PLT layout. Fill the non-lazy PLT entries with non-lazy PLT layout. Don't fill the second and third slots in the PLT entry if there is no PLT0. (elf_x86_64_finish_dynamic_sections): Updated. Don't fill PLT0 if there is no PLT0. Set sh_entsize on the .plt.got section. (compare_relocs): New. (elf_x86_64_plt_type): Likewise. (elf_x86_64_plt): Likewise. (elf_x86_64_nacl_plt): New. Forward declaration. (elf_x86_64_get_plt_sym_val): Removed. (elf_x86_64_get_synthetic_symtab): Rewrite to check PLT sections against all dynamic relocations. (elf_x86_64_link_setup_gnu_properties): New function. (elf_backend_create_dynamic_sections): Updated. (elf_backend_setup_gnu_properties): New. (elf_x86_64_nacl_plt): New. (elf_x86_64_nacl_arch_bed): Updated. ld/ * testsuite/ld-ifunc/ifunc-16-x86-64-now.d: New file. * testsuite/ld-ifunc/ifunc-2-local-x86-64-now.d: Likewise. * testsuite/ld-ifunc/ifunc-2-x86-64-now.d: Likewise. * testsuite/ld-ifunc/pr17154-x86-64-now.d: Likewise. * testsuite/ld-x86-64/bnd-branch-1-now.d: Likewise. * testsuite/ld-x86-64/bnd-ifunc-1-now.d: Likewise. * testsuite/ld-x86-64/bnd-ifunc-2-now.d: Likewise. * testsuite/ld-x86-64/bnd-plt-1-now.d: Likewise. * testsuite/ld-x86-64/mpx3n.dd: Likewise. * testsuite/ld-x86-64/mpx4n.dd: Likewise. * testsuite/ld-x86-64/plt-main-bnd-now.rd: Likewise. * testsuite/ld-x86-64/plt2.dd: Likewise. * testsuite/ld-x86-64/plt2.rd: Likewise. * testsuite/ld-x86-64/plt2.s: Likewise. * testsuite/ld-x86-64/pr20830a-now.d: Likewise. * testsuite/ld-x86-64/pr20830b-now.d: Likewise. * testsuite/ld-x86-64/pr21038a-now.d: Likewise. * testsuite/ld-x86-64/pr21038b-now.d: Likewise. * testsuite/ld-x86-64/pr21038c-now.d: Likewise. * testsuite/ld-x86-64/load1b-nacl.d: Updated. * testsuite/ld-x86-64/load1b.d: Likewise. * testsuite/ld-x86-64/plt-main-bnd.dd: Likewise. * testsuite/ld-x86-64/pr20253-1h.d: Likewise. * testsuite/ld-x86-64/pr20830a.d: Update the .plt.got section with func@plt. * testsuite/ld-x86-64/pr20830b.d: Likewise. * testsuite/ld-x86-64/pr21038a.d: Likewise. * testsuite/ld-x86-64/pr21038c.d: Likewise. * testsuite/ld-x86-64/mpx.exp: Add some -z now tests. * testsuite/ld-x86-64/x86-64.exp: Likewise.
2017-05-08S/390: Fix ifunc missing runtime relocAndreas Krebbel3-7/+6
This fixes a problem with a missing R_390_64 reloc against .data for a function pointer to an ifunc function. No regressions on s390x. Pushed to mainline. bfd/ChangeLog: 2017-05-08 Andreas Krebbel <krebbel@linux.vnet.ibm.com> * elf-s390-common.c: Don't check non_got_ref flag. * elf32-s390.c (elf_s390_relocate_section): Likewise. * elf64-s390.c (elf_s390_relocate_section): Likewise.
2017-05-08i386: Improve PLT generation and synthetic PLT symbolsH.J. Lu2-396/+884
On i386, the procedure linkage table (PLT) is used to 1. Call external function. 2. Call internal IFUNC function. The best implementation is selected for the target processor at run-time. 3. Act as the canonical function address. 4. Support LD_AUDIT to audit external function calls. 5. Support LD_PROFILE to profile external function calls. PLT looks like: PLT0: push GOT[1] jmp *GOT[2] nop PLT1: jmp *GOT[name1_index] push name1_reloc_index jmp PLT0 GOT is an array of addresses. Initially the GOT entry of name1 is filled with the address of the "push name1_reloc_index" instruction. The function, name1, is called via "jmp *GOT[name1]" in the PLT entry. Even when lazy binding is disabled by "-z now", the PLT0 entry may still be used with LD_AUDIT or LD_PROFILE if PLT entry is used for canonical function address. 1. With lazy binding, when the external function, name1, is called the first time, dynamic linker is called via PLT0 to update GOT[name1_index] with the actual address of name1 and transfers control to name1 afterwards. 2. PLT is also used to call a local IFUNC function, name1, run-time loader updates GOT[name1_index] when loading the module. This patch 1. Remove PLT layout configurations from i386 backend_data. 2. Add generic, lay and non-lazy PLT layout configurations to i386 link_hash_table. Generic PLT layout includes the PLT entry templates, information how to update the first instruction in PLT and PLT eh_frame informaton, which are initialized in i386 setup_gnu_properties, based on PIC and target selection. PLT section alignment is also set to PLT entry size for non-NaCl/VxWorks target. 3. Remove elf_i386_create_dynamic_sections. create_dynamic_sections isn't always called, but GOT relocations need GOT relocations. Instead, create all i386 specific dynamic sections in i386 setup_gnu_properties, which initializes elf.dynobj, so that i386 check_relocs can be simplified. 4. Rewrite elf_i386_get_synthetic_symtab to check PLT sections against all dynamic relocations to support both lazy and non-lazy PLTs. bfd/ * elf32-i386.c (PLT_ENTRY_SIZE): Renamed to ... (LAZY_PLT_ENTRY_SIZE): This. (NON_LAZY_PLT_ENTRY_SIZE): New. (elf_i386_plt0_entry): Renamed to ... (elf_i386_lazy_plt0_entry): This. (elf_i386_plt_entry): Renamed to ... (elf_i386_lazy_plt_entry): This. (elf_i386_pic_plt0_entry): Renamed to ... (elf_i386_pic_lazy_plt0_entry): This. (elf_i386_pic_plt_entry): Renamed to ... (elf_i386_pic_lazy_plt_entry): This. (elf_i386_got_plt_entry): Renamed to ... (elf_i386_non_lazy_plt_entry): This. (elf_i386_pic_got_plt_entry): Renamed to ... (elf_i386_pic_non_lazy_plt_entry): This. (elf_i386_eh_frame_plt): Renamed to ... (elf_i386_eh_frame_lazy_plt): This. (elf_i386_eh_frame_plt_got): Renamed to ... (elf_i386_eh_frame_non_lazy_plt): This. (elf_i386_plt_layout): Renamed to ... (elf_i386_lazy_plt_layout): This. Remove eh_frame_plt_got and eh_frame_plt_got_size. (elf_i386_non_lazy_plt_layout): New. (elf_i386_plt_layout): Likewise. (elf_i386_non_lazy_plt): Likewise. (GET_PLT_ENTRY_SIZE): Removed. (elf_i386_plt): Renamed to ... (elf_i386_lazy_plt): This. (elf_i386_backend_data): Remove plt. Rename is_vxworks to os. (elf_i386_arch_bed): Updated. (elf_i386_link_hash_table): Add plt, lazy_plt and non_lazy_plt. (elf_i386_create_dynamic_sections): Removed. (elf_i386_check_relocs): Don't check elf.dynobj. Don't call _bfd_elf_create_ifunc_sections nor _bfd_elf_create_got_section. (elf_i386_adjust_dynamic_symbol): Updated. (elf_i386_allocate_dynrelocs): Updated. Pass 0 as PLT header size to _bfd_elf_allocate_ifunc_dyn_relocs and don't allocate size for PLT0 if there is no PLT0. (elf_i386_size_dynamic_sections): Updated. Check whether GOT output section is discarded only if GOT isn't empty. (elf_i386_relocate_section): Updated. Properly get PLT index if there is no PLT0. (elf_i386_finish_dynamic_symbol): Updated. Don't fill the second and third slots in the PLT entry if there is no PLT0. (elf_i386_finish_dynamic_sections): Updated. Don't fill PLT0 if there is no PLT0. Set sh_entsize on the .plt.got section. (elf_i386_nacl_plt): Forward declaration. (elf_i386_get_plt_sym_val): Removed. (elf_i386_get_synthetic_symtab): Rewrite to check PLT sections against all dynamic relocations. (elf_i386_link_setup_gnu_properties): New function. (elf_backend_create_dynamic_sections): Updated. (elf_backend_setup_gnu_properties): New. (elf_i386_nacl_plt): Updated. (elf_i386_nacl_arch_bed): Likewise. (elf_i386_vxworks_arch_bed): Likewise. ld/ * testsuite/ld-i386/i386.exp: Add some -z now tests. * testsuite/ld-i386/plt-pic2.dd: New file. * testsuite/ld-i386/plt2.dd: Likewise. * testsuite/ld-i386/plt2.rd: Likewise. * testsuite/ld-i386/plt2.s: Likewise. * testsuite/ld-ifunc/ifunc-16-i386-now.d: Likewise. * testsuite/ld-ifunc/ifunc-2-i386-now.d: Likewise. * testsuite/ld-ifunc/ifunc-2-local-i386-now.d: Likewise. * testsuite/ld-ifunc/pr17154-i386-now.d: Likewise. * testsuite/ld-i386/pr20830.d: Update the .plt.got section with func@plt.
2017-05-08Make import libraries relocatable objectsThomas Preud'homme3-1/+13
For ELF targets --out-implib currently generates an executable file (e_type is ET_EXEC) despite the file being expected to be linked against some other object file to make an executable later. It seems therefore more sensible to make the import library a relocatable object file (e_type set to ET_REL). Incidentally, as dicted by requirement 8 of "ARM v8-M Security Extensions: Requirements on Development Tools" (document ARM-ECM-0359818) version 1.0, import libraries generated when using --cmse-implib *must* be relocatable object file so this commit also adds an assert there in case the type of ELF import library is changed again in the future. 2017-05-08 Thomas Preud'homme <thomas.preudhomme@arm.com> bfd/ * elflink.c (elf_output_implib): Remove executable flag from import library bfd. * elf32-arm.c (elf32_arm_filter_implib_symbols): Assert that the import library is a relocatable object file. ld/ * testsuite/ld-arm/arm-elf.exp (Secure gateway import library generation): Check e_type field of import library and executable produced. * testsuite/ld-arm/cmse-implib.type: Expectations for e_type field.
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2017-05-04Fix PR21404 - assertion fail when calculating symbol sizeSenthil Kumar Selvaraj2-31/+69
Fix a host of problems related to adjustment of symbol values and sizes when relaxing for avr. 1. Adjust symbol size first before adjusting symbol value. Otherwise, a symbol whose value just got adjusted to the relaxed address also ends up getting resized. See pr21404-1.s. 2. Reduce symbol sizes only if their span is below an alignment boundary. Otherwise, the size gets decremented once when the actual instruction is relaxed and padding bytes are added, and again when the padding bytes are deleted (if padding ends up being unnecessary). pr21404-2.s addresses that, and this bug is really the root cause of PR21404. 3. Adjust all symbol values before an alignment boundary. Previous code did not adjust symbol values if they fell in the would-be padded area, resulting in incorrect symbol values in some cases (see pr21404-3.s). 4. Increase symbol sizes if alignment directives require so. As pr21404-4.s shows .global nonzero_sym L1: jmp L1 nonzero_sym: nop nop .p2align 2 .size nonzero_sym, .-nonzero_sym The two nops satisfy the 4 byte alignment at assembly time and therefore the size of nonzero_sym is 4. Relaxation shortens the 4 byte jmp to a 2 byte rjmp, and to satisfy 4 byte alignment the code places 2 extra padding bytes after the nops, increasing nonzero_sym's size by 2. This wasn't handled before. If the assembly code does not have any align directives, then the boundary is the section size, and symbol values and sizes == boundary should also get adjusted. To handle that case, add a did_pad variable and use that to determine whether it should use < boundary or <= boundary. Also get rid of reloc_toaddr, which is now redundant. toaddr is now not adjusted to handle the above case - the newly added did_pad variable does the job. pr21404-{5,6,7,8} are the same testcases written for local symbols, as the code handles them slightly differently.
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2017-05-02RISC-V: Allow 32-bit BFD to handle 64-bit objectsPalmer Dabbelt2-2/+5
We've been telling people that the riscv32-* and riscv64-* toolchains are exactly the same, but it turns out we were lying: the riscv32-* BFD doesn't handle 64-bit objects. This fixes that difference, so the ports are actually the same. bfd/ChangeLog 2017-05-01 Palmer Dabbelt <palmer@dabbelt.com> * config.bfd (riscv32-*): Enable rv64.
2017-05-03PR 21384, --dynamic-list regression with f02cb058Alan Modra2-3/+17
The commit to "Always descend into output section statements in lang_do_assignments" meant that linker script symbols were not bfd_link_hash_new when ld called bfd_elf_record_link_assignment. This patch corrects that problem by testing h->non_elf instead. PR 21384 * elflink.c (bfd_elf_link_mark_dynamic_symbol): Test h->non_elf rather than h->root.type == bfd_link_hash_new. (bfd_elf_record_link_assignment): Similarly, call bfd_elf_link_mark_dynamic_symbol when h->non_elf.
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2017-04-29PR21432, buffer overflow in perform_relocationAlan Modra2-12/+27
The existing reloc offset range tests didn't catch small negative offsets less than the size of the reloc field. PR 21432 * reloc.c (reloc_offset_in_range): New function. (bfd_perform_relocation, bfd_install_relocation): Use it. (_bfd_final_link_relocate): Likewise.
2017-04-29Automatic date update in version.inGDB Administrator1-1/+1
2017-04-28x86: Check plt_got before using .plt.gotH.J. Lu3-2/+12
Since the GOT procedure linkage table is supported only if plt_got isn't NULL, we need to check plt_got before using it. * elf32-i386.c (elf_i386_allocate_dynrelocs): Check plt_got before using .plt.got. * elf64-x86-64.c (elf_x86_64_allocate_dynrelocs): Likewise.
2017-04-28Automatic date update in version.inGDB Administrator1-1/+1
2017-04-27x86-64: Use "=" instead of "+=" to update 0H.J. Lu2-1/+6
Use if (htab->elf.splt->size == 0) htab->elf.splt->size = GET_PLT_ENTRY_SIZE (output_bfd); instead of if (htab->elf.splt->size == 0) htab->elf.splt->size += GET_PLT_ENTRY_SIZE (output_bfd); * elf64-x86-64.c (elf_x86_64_size_dynamic_sections): Use "=" instead of "+=" to update 0.
2017-04-27x86: Create dynamic sections in create_dynamic_sectionsH.J. Lu3-188/+172
This patch creates dynamic sections in i386/x86-64 create_dynamic_sections instead of creating them on demend. Linker will strip them if they are empty. It changes order in x86-64 .eh_frame section. The extra DW_CFA_nop paddings is due to https://sourceware.org/bugzilla/show_bug.cgi?id=21441 bfd/ * elf32-i386.c (elf_i386_create_dynamic_sections): Create the .plt.got section here. (elf_i386_check_relocs): Don't create the .plt.got section. * elf64-x86-64.c (elf_x86_64_create_dynamic_sections): Create the .plt.got and .plt.bnd sections here. (elf_x86_64_check_relocs): Don't create the .plt.got nor .plt.bnd sections. ld/ * testsuite/ld-x86-64/pr21038a.d: Update DW_CFA_nop paddings in .eh_frame section. * testsuite/ld-x86-64/pr21038c.d: Update .eh_frame order.
2017-04-27Remove has_bnd_reloc from elf_x86_64_link_hash_entryH.J. Lu2-10/+13
has_bnd_reloc was added to elf_x86_64_link_hash_entry track BND relocations by commit 0ff2b86e7c14177ec7f9e1257f8e697814794017 Author: H.J. Lu <hjl.tools@gmail.com> Date: Wed Nov 20 09:01:04 2013 -0800 Create the second PLT for BND relocations Since BND relocations have been deprecated by commit d258b828287a863376af60a1ef7ceafbccc83d93 Author: Igor Zamyatin <igor.zamyatin@intel.com> Date: Tue Nov 18 10:52:36 2014 +0300 Add -z bndplt to generate BND prefix in PLT entries This patch removes has_bnd_reloc from elf_x86_64_link_hash_entry and checks bndplt instead of has_bnd_reloc. * elf64-x86-64.c (elf_x86_64_link_hash_entry): Remove has_bnd_reloc. (elf_x86_64_link_hash_newfunc): Don't clear has_bnd_reloc. (elf_x86_64_copy_indirect_symbol): Don't copy has_bnd_reloc. (elf_x86_64_check_relocs): Don't set has_bnd_reloc. (elf_x86_64_finish_dynamic_symbol): Check bndplt instead of has_bnd_reloc. Remove has_bnd_reloc
2017-04-27Change _bfd_elf_link_setup_gnu_properties to bfd *H.J. Lu3-6/+17
Change setup_gnu_properties to return the first relocatable ELF input with GNU properties so that a backend can make decision based on GNU properties. * elf-bfd.h (elf_backend_data): Change setup_gnu_properties to return bfd *. (_bfd_elf_link_setup_gnu_properties): Return bfd *. * elf-properties.c (_bfd_elf_link_setup_gnu_properties): Return the first relocatable ELF input with GNU properties.
2017-04-27i386: Simplify VxWorks for non-PICH.J. Lu2-32/+35
Change if (PIC) { #1 } else { #2 if (VxWorks) { #3 } } #4 if (VxWorks && !PIC) { #5 } to #4 if (PIC) { #1 } else { #2 if (VxWorks) { #3 #5 } } * elf32-i386.c (elf_i386_finish_dynamic_sections): Simplify VxWorks for non-PIC.
2017-04-27Constify elf_backend_eh_frame_address_sizeAlan Modra7-12/+27
* elf-bfd.h (struct elf_backend_data): Make asection param of elf_backend_eh_frame_address_size const. (_bfd_elf_eh_frame_address_size): Likewise. * elf32-m32c.c (_bfd_m32c_elf_eh_frame_address_size): Likewise. * elf32-msp430.c (elf32_msp430_eh_frame_address_size): Likewise. * elfxx-mips.c (_bfd_mips_elf_eh_frame_address_size): Likewise. * elfxx-mips.h (_bfd_mips_elf_eh_frame_address_size): Likewise. * elf-eh-frame.c (_bfd_elf_eh_frame_address_size): Likewise. (next_cie_fde_offset): Constify params. (offset_adjust, adjust_eh_frame_local_symbols): Likewise.
2017-04-27Edit .eh_frame symbolsAlan Modra4-3/+185
Experimental support for moving symbols defined in .eh_frame as their CIEs/FDEs are edited or merged. * elf-bfd.h (struct eh_cie_fde): Add aug_str_len and aug_data_len. (_bfd_elf_adjust_eh_frame_global_symbol): Declare. * elf-eh-frame.c (_bfd_elf_parse_eh_frame): Set aug_str_len and aug_data_len. (offset_adjust): New function. (_bfd_elf_adjust_eh_frame_global_symbol): Likewise. (adjust_eh_frame_local_symbols): Likewise. (_bfd_elf_discard_section_eh_frame): Call adjust_eh_frame_local_symbols after changing anything. Return true if anything changed. * elflink.c (bfd_elf_discard_info): If .eh_frame changed, call _bfd_elf_adjust_eh_frame_global_symbol for globals.
2017-04-27Clear dynstr_index when forcing symbols localAlan Modra2-1/+7
This is really just cosmetic, but it does protect a little from accidentally reading a stale value. * elflink.c (_bfd_elf_link_hash_hide_symbol): Clear dynstr_index when force_local.
2017-04-27PowerPC undefweak handlingAlan Modra3-36/+41
This patch fixes a number of cases where -z nodynamic-undefined-weak was not effective in preventing dynamic relocations or linkage stubs. * elf32-ppc.c (UNDEFWEAK_NO_DYNAMIC_RELOC): Define. (ppc_elf_select_plt_layout, ppc_elf_tls_setup): Use it. (ppc_elf_adjust_dynamic_symbol, allocate_dynrelocs): Likewise. (ppc_elf_relocate_section): Likewise. Delete silly optimisation for undef and undefweak dyn_relocs. * elf64-ppc.c (UNDEFWEAK_NO_DYNAMIC_RELOC): Define. (ppc64_elf_adjust_dynamic_symbol, ppc64_elf_tls_setup): Use it. (allocate_got, allocate_dynrelocs): Likewise. (ppc64_elf_relocate_section): Likewise.
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2017-04-26x86: Add DT_PLTRELSZ/DT_PLTREL/DT_JMPREL for PLT relocationH.J. Lu3-18/+25
x86, PLT relocation may contain R_386_TLS_DESC or R_X86_64_TLSDESC even though there is no real PLT. We need to add DT_PLTRELSZ, DT_PLTREL and DT_JMPREL if there is a .rel.plt/.rela.plt section. bfd/ * elf32-i386.c (elf_i386_size_dynamic_sections): Alwasys add DT_PLTRELSZ, DT_PLTREL and DT_JMPREL for .rel.plt section. * elf64-x86-64.c (elf_x86_64_size_dynamic_sections): Alwasys add DT_PLTRELSZ, DT_PLTREL and DT_JMPREL for .rela.plt section. ld/ * testsuite/ld-i386/tlsdesc2.d: New test. * testsuite/ld-x86-64/tlsdesc2.d: Likewise.
2017-04-26Fix a seg-fault when processing a corrupt binary containing reloc(s) with ↵Nick Clifton2-1/+10
negative addresses. PR binutils/21434 * reloc.c (bfd_perform_relocation): Check for a negative address in the reloc.
2017-04-26PR ld/21334: Always call `_bfd_elf_link_renumber_dynsyms' if requiredMaciej W. Rozycki5-12/+47
Complement commit e17b0c351f0b ("MIPS/BFD: Respect the ELF gABI dynamic symbol table sort requirement") and correct an inconsistency in dynamic symbol accounting data causing an assertion failure in the MIPS backend: ld: BFD (GNU Binutils) 2.28.51.20170330 assertion fail ../../binutils-gdb/bfd/elfxx-mips.c:3860 in the course of making a GOT entry in a static binary to satisfy a GOT relocation present in input, due to the local dynamic symbol count not having been established. To do so let backends request `_bfd_elf_link_renumber_dynsyms' to be always called, rather than where a dynamic binary is linked only, and then make this request in the MIPS backend. bfd/ PR ld/21334 * elf-bfd.h (elf_backend_data): Add `always_renumber_dynsyms' member. * elfxx-target.h [!elf_backend_always_renumber_dynsyms] (elf_backend_always_renumber_dynsyms): Define. (elfNN_bed): Initialize `always_renumber_dynsyms' member. * elfxx-mips.h (elf_backend_always_renumber_dynsyms): Define. * elflink.c (bfd_elf_size_dynamic_sections): Also call `_bfd_elf_link_renumber_dynsyms' if the backend has requested it. (bfd_elf_size_dynsym_hash_dynstr): Likewise. ld/ PR ld/21334 * testsuite/ld-mips-elf/pr21334.dd: New test. * testsuite/ld-mips-elf/pr21334.gd: New test. * testsuite/ld-mips-elf/pr21334.ld: New test linker script. * testsuite/ld-mips-elf/pr21334.s: New test source. * testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.
2017-04-26ELF/BFD: Limit `_bfd_elf_link_renumber_dynsyms' call in section GCMaciej W. Rozycki2-1/+8
Consistently call `_bfd_elf_link_renumber_dynsyms' only if linking a dynamic binary, complementing code in `bfd_elf_size_dynsym_hash_dynstr' and commit ccabcbe51e85 ("New attempt at fixing MIPS --gc-sections et al."), <https://sourceware.org/ml/binutils/2005-08/msg00258.html>. bfd/ * elflink.c (bfd_elf_size_dynamic_sections): Only call `_bfd_elf_link_renumber_dynsyms' after section GC if dynamic sections have been created.
2017-04-26Fix seg-fault attempting to compress a debug section in a corrupt binary.Nick Clifton2-10/+15
PR binutils/21431 * compress.c (bfd_init_section_compress_status): Check the return value from bfd_malloc.
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2017-04-24x86-64: Force symbol dynamic if it isn't undefined weakH.J. Lu2-21/+59
Force symbol dynamic if it isn't undefined weak. Generate relative relocation for GOT reference against non-dynamic symbol in PIC to avoid unnecessary dynamic symbols. bfd/ * elf64-x86-64.c (elf_x86_64_link_hash_entry): Add no_finish_dynamic_symbol. (elf_x86_64_link_hash_newfunc): Set no_finish_dynamic_symbol to 0. (elf_x86_64_allocate_dynrelocs): If a symbol isn't undefined weak symbol, don't make it dynamic. (elf_x86_64_relocate_section): If a symbol isn't dynamic in PIC, set no_finish_dynamic_symbol and generate R_X86_64_RELATIVE relocation for GOT reference. (elf_x86_64_finish_dynamic_symbol): Abort if no_finish_dynamic_symbol isn't 0. ld/ * testsuite/ld-x86-64/no-plt.exp: Also check no-plt-1e.nd. * testsuite/ld-x86-64/no-plt-1e.nd: New file.
2017-04-24i386: Force symbol dynamic if it isn't undefined weakH.J. Lu2-9/+17
Force symbol dynamic if it isn't undefined weak. Generate R_386_RELATIVE relocation for R_386_GOT32 relocation against non-dynamic symbol in PIC. PR ld/21402 * elf32-i386.c (elf_i386_allocate_dynrelocs): If a symbol isn't undefined weak symbol, don't make it dynamic. (elf_i386_relocate_section): If a symbol isn't dynamic in PIC, set no_finish_dynamic_symbol and generate R_386_RELATIVE relocation for R_386_GOT32.
2017-04-24i386: Set ELF_MAXPAGESIZE to 0x1000 for VxWorksH.J. Lu2-0/+7
commit a27e437177412e5b52999723f3c5d5d0d37b9087 Author: Roland McGrath <roland@gnu.org> Date: Thu Jul 28 22:35:15 2011 +0000 BFD vector for elf32-i386-nacl: changed ELF_MAXPAGESIZE to 0x10000 for VxWorks. This patch fixes it and updated testsuite/ld-i386/vxworks2.sd to add space for program headers. bfd/ PR ld/21425 * elf32-i386.c (ELF_MAXPAGESIZE): Set to 0x1000 for VxWorks. ld/ PR ld/20815 * testsuite/ld-i386/vxworks2.sd: Add space for program headers.
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