binutils-gdb

Commit Graph

Author	SHA1	Message	Date
H.J. Lu	f604c2a2a5	i386: Improve PLT generation and synthetic PLT symbols 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.	9 years ago
Thomas Preud'homme	046734ff42	Make import libraries relocatable objects 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.	9 years ago
Senthil Kumar Selvaraj	b660e9eb7a	Fix PR21404 - assertion fail when calculating symbol size 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.	9 years ago
Maciej W. Rozycki	8507b6e797	MIPS16/GAS: Relax 32-bit non-PIC PC-relative synthetic instructions Implement the relaxation of MIPS16 PC-relative synthetic LA, DLA, LW and LD instructions to an equivalent sequence of instructions produced where the address operand requested is out of range, absolute or requires linker relocation, for ABIs that use 32-bit addressing and non-PIC code. The sequence generated uses the register specified for the destination operand as a temporary and begins with LI to load the high 16-bit part of the address, then continues with SLL by 16 bits to move that part into place and finally completes with a suitable operation corresponding to the synthetic instruction used, one of: 2-argument ADDIU, 2-argument DADDIU, absolute LW, and absolute LD respectively, providing the low 16-bit part of the address. All instructions use the extended encoding. As a special exception accept absolute addresses for relaxation even in PIC code. For example: la $2, 0x12345678 produces code as: li $2, 0x1234 sll $2, $2, 16 addiu $2, 0x5678 would. Where linker relocation is required emit an R_MIPS16_HI16 relocation on the initial LI instruction and an R_MIPS16_LO16 relocation on the final operation. For example (where `foo' is not local): lw $3, foo produces code as: li $3, %hi(foo) sll $3, $3, 16 lw $3, %lo(foo)($3) would. Emit assembly warnings as appropriate where this new relaxation triggers in the `nomacro' mode or for an instruction manually placed in a branch delay slot in the `noreorder' mode. Refrain from relaxation where an explicit instruction size suffix has been used and in the `noautoextend' mode. gas/ * config/tc-mips.c (RELAX_MIPS16_ENCODE): Add `pic', `sym32' and `nomacro' flags. (RELAX_MIPS16_PIC, RELAX_MIPS16_SYM32, RELAX_MIPS16_NOMACRO): New macros. (RELAX_MIPS16_USER_SMALL, RELAX_MIPS16_USER_EXT) (RELAX_MIPS16_DSLOT, RELAX_MIPS16_JAL_DSLOT) (RELAX_MIPS16_EXTENDED, RELAX_MIPS16_MARK_EXTENDED) (RELAX_MIPS16_CLEAR_EXTENDED, RELAX_MIPS16_ALWAYS_EXTENDED) (RELAX_MIPS16_MARK_ALWAYS_EXTENDED) (RELAX_MIPS16_CLEAR_ALWAYS_EXTENDED): Shift bits. (RELAX_MIPS16_MACRO, RELAX_MIPS16_MARK_MACRO) (RELAX_MIPS16_CLEAR_MACRO): New macros. (append_insn): Pass `mips_pic', HAVE_32BIT_SYMBOLS and `mips_opts.warn_about_macros' settings to RELAX_MIPS16_ENCODE. (mips16_macro_frag): New function. (md_estimate_size_before_relax): Handle HI16/LO16 relaxation. (mips_relax_frag): Likewise. (md_convert_frag): Likewise. * testsuite/gas/mips/mips16@relax-swap3.d: Remove error output, add dump patterns. * testsuite/gas/mips/mips16e@relax-swap3.d: New test subarchitecture. * testsuite/gas/mips/micromips@relax-swap3.d: Remove trailing NOP padding. * testsuite/gas/mips/mips16-pcrel-reloc-2.d: Remove error output, add dump patterns. * testsuite/gas/mips/mips16-pcrel-reloc-3.d: Remove error output, add dump patterns. * testsuite/gas/mips/mips16-pcrel-reloc-6.d: Remove error output, add dump patterns. * testsuite/gas/mips/mips16-pcrel-reloc-7.d: Remove error output, add dump patterns. * testsuite/gas/mips/mips16-pcrel-addend-2.d: Remove error output, add dump patterns. * testsuite/gas/mips/mips16-pcrel-addend-3.d: Remove error output, add dump patterns. * testsuite/gas/mips/mips16-pcrel-absolute.d: Remove error output, add dump patterns. * testsuite/gas/mips/mips16-pcrel-absolute-1.d: Remove error output, add dump patterns. * testsuite/gas/mips/mips16@relax-swap3.l: Remove file. * testsuite/gas/mips/mips16-pcrel-reloc-2.l: Remove file. * testsuite/gas/mips/mips16-pcrel-reloc-3.l: Remove file. * testsuite/gas/mips/mips16-pcrel-reloc-6.l: Remove file. * testsuite/gas/mips/mips16-pcrel-reloc-7.l: Remove file. * testsuite/gas/mips/mips16-pcrel-addend-2.l: Remove file. * testsuite/gas/mips/mips16-pcrel-addend-3.l: Remove file. * testsuite/gas/mips/mips16-pcrel-absolute.l: Remove file. * testsuite/gas/mips/mips16-pcrel-absolute-1.l: Remove file. * testsuite/gas/mips/relax-swap3.s: Adjust trailing padding. * testsuite/gas/mips/mips16-pcrel-0.d: New test. * testsuite/gas/mips/mips16-pcrel-1.d: New test. * testsuite/gas/mips/mips16-pcrel-2.d: New test. * testsuite/gas/mips/mips16-pcrel-3.d: New test. * testsuite/gas/mips/mips16-pcrel-4.d: New test. * testsuite/gas/mips/mips16-pcrel-5.d: New test. * testsuite/gas/mips/mips16-pcrel-pic-0.d: New test. * testsuite/gas/mips/mips16-pcrel-pic-1.d: New test. * testsuite/gas/mips/mips16-pcrel-n32-0.d: New test. * testsuite/gas/mips/mips16-pcrel-n32-1.d: New test. * testsuite/gas/mips/mips16-pcrel-n64-sym32-0.d: New test. * testsuite/gas/mips/mips16-pcrel-n64-sym32-1.d: New test. * testsuite/gas/mips/mips16-pcrel-n64-0.d: New test. * testsuite/gas/mips/mips16-pcrel-n64-1.d: New test. * testsuite/gas/mips/mips16-pcrel-delay-0.d: New test. * testsuite/gas/mips/mips16-pcrel-delay-1.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-4.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-5.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-6.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-7.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-8.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-9.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-pic-8.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-pic-9.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-n32-8.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-n32-9.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-n64-sym32-8.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-n64-sym32-9.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-n64-8.d: New test. * testsuite/gas/mips/mips16-pcrel-addend-n64-9.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-2.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-3.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-4.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-5.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-6.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-7.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-pic-4.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-pic-6.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-n32-4.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-n32-6.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-n64-4.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-n64-6.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-n64-sym32-4.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-n64-sym32-6.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-pic-n32-4.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-pic-n32-6.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-pic-n64-4.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-pic-n64-6.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-pic-n64-sym32-4.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-pic-n64-sym32-6.d: New test. * testsuite/gas/mips/mips16-pcrel-0.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-1.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-2.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-3.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-4.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-5.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-delay-0.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-delay-1.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-addend-8.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-addend-9.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-absolute-4.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-absolute-6.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-0.s: New test source. * testsuite/gas/mips/mips16-pcrel-1.s: New test source. * testsuite/gas/mips/mips16-pcrel-2.s: New test source. * testsuite/gas/mips/mips16-pcrel-3.s: New test source. * testsuite/gas/mips/mips16-pcrel-4.s: New test source. * testsuite/gas/mips/mips16-pcrel-5.s: New test source. * testsuite/gas/mips/mips16-pcrel-delay-0.s: New test source. * testsuite/gas/mips/mips16-pcrel-delay-1.s: New test source. * testsuite/gas/mips/mips16-pcrel-addend-4.s: New test source. * testsuite/gas/mips/mips16-pcrel-addend-5.s: New test source. * testsuite/gas/mips/mips16-pcrel-addend-6.s: New test source. * testsuite/gas/mips/mips16-pcrel-addend-7.s: New test source. * testsuite/gas/mips/mips16-pcrel-addend-8.s: New test source. * testsuite/gas/mips/mips16-pcrel-addend-9.s: New test source. * testsuite/gas/mips/mips16-pcrel-absolute-2.s: New test. * testsuite/gas/mips/mips16-pcrel-absolute-3.s: New test. * testsuite/gas/mips/mips16-pcrel-absolute-4.s: New test. * testsuite/gas/mips/mips16-pcrel-absolute-5.s: New test. * testsuite/gas/mips/mips16-pcrel-absolute-6.s: New test. * testsuite/gas/mips/mips16-pcrel-absolute-7.s: New test. * testsuite/gas/mips/mips.exp: Run the new tests. ld/ * testsuite/ld-mips-elf/mips16-pcrel-0.d: New test. * testsuite/ld-mips-elf/mips16-pcrel-1.d: New test. * testsuite/ld-mips-elf/mips16-pcrel-addend-2.d: New test. * testsuite/ld-mips-elf/mips16-pcrel-addend-6.d: New test. * testsuite/ld-mips-elf/mips16-pcrel-n32-0.d: New test. * testsuite/ld-mips-elf/mips16-pcrel-n32-1.d: New test. * testsuite/ld-mips-elf/mips16-pcrel-n64-sym32-0.d: New test. * testsuite/ld-mips-elf/mips16-pcrel-n64-sym32-1.d: New test. * testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.	9 years ago
H.J. Lu	b22908217d	Adjust testsuite/ld-elf/pr21384.d Adjust testsuite/ld-elf/pr21384.d to accommodate additional dynamic symbols on some targets. * testsuite/ld-elf/pr21384.d: Adjusted to accommodate additional dynamic symbols on some targets.	9 years ago
Maciej W. Rozycki	82d808edbc	MIPS16/GAS: Fix absolute references with PC-relative synthetic instructions Complement commit `88a7ef1689` ("MIPS16/GAS: Restore unsupported relocation diagnostics") and also propagate constant expressions, either already reduced from absolute symbol references or created from literals in the first place, used as a PC-relative operand with the MIPS16 LA, LW, DLA and LD synthetic instructions to relaxation, matching the way forward absolute symbol references have been handled as from the commit referred and letting relaxation produce any necessary relocations, if possible, for the absolute value requested to be reproduced at the run time. Call `symbol_append' for any expression symbol created for the purpose of MIPS16 relaxation as with constant expressions now propagated from earlier on such symbols may make it through and have R_MIPS16_PC16_S1 relocations emitted against, and therefore need to appear in the symbol table produced. gas/ * config/tc-mips.c (append_insn): Call `symbol_append' for any expression symbol created for MIPS16 relaxation. (match_mips16_insn): Don't encode a constant value as an immediate with a PC-relative operand. * testsuite/gas/mips/mips16-pcrel-absolute-1.d: New test. * testsuite/gas/mips/mips16-branch-absolute-1.d: New test. * testsuite/gas/mips/mips16-branch-absolute-2.d: New test. * testsuite/gas/mips/mips16-branch-absolute-addend-1.d: New test. * testsuite/gas/mips/mips16-branch-absolute-n32-1.d: New test. * testsuite/gas/mips/mips16-branch-absolute-n32-2.d: New test. * testsuite/gas/mips/mips16-branch-absolute-addend-n32-1.d: New test. * testsuite/gas/mips/mips16-branch-absolute-n64-1.d: New test. * testsuite/gas/mips/mips16-branch-absolute-n64-2.d: New test. * testsuite/gas/mips/mips16-branch-absolute-addend-n64-1.d: New test. * testsuite/gas/mips/mips16-pcrel-absolute-1.l: New stderr output. * testsuite/gas/mips/mips16-pcrel-absolute-1.s: New test source. * testsuite/gas/mips/mips16-branch-absolute-1.s: New test source. * testsuite/gas/mips/mips16-branch-absolute-2.s: New test source. * testsuite/gas/mips/mips16-branch-absolute-addend-1.s: New test source. * testsuite/gas/mips/mips.exp: Run the new tests. ld/ * testsuite/ld-mips-elf/mips16-branch-absolute-1.d: New test. * testsuite/ld-mips-elf/mips16-branch-absolute-2.d: New test. * testsuite/ld-mips-elf/mips16-branch-absolute-addend-1.d: New test. * testsuite/ld-mips-elf/mips16-branch-absolute-n32-1.d: New test. * testsuite/ld-mips-elf/mips16-branch-absolute-n32-2.d: New test. * testsuite/ld-mips-elf/mips16-branch-absolute-addend-n32-1.d: New test. * testsuite/ld-mips-elf/mips16-branch-absolute-n64-1.d: New test. * testsuite/ld-mips-elf/mips16-branch-absolute-n64-2.d: New test. * testsuite/ld-mips-elf/mips16-branch-absolute-addend-n64-1.d: New test. * testsuite/ld-mips-elf/mips-elf.exp: Run the new tests.	9 years ago
H.J. Lu	3d8505928a	x86: Add -Wl,--no-as-needed to some TLS tests * testsuite/ld-i386/tls.exp: Add -Wl,--no-as-needed to "TLS without PLT (1)" and "TLS without PLT (3)". * testsuite/ld-x86-64/tls.exp: Add -Wl,--no-as-needed to to "TLS without PLT (3)".	9 years ago
H.J. Lu	640226f048	Add a test for PR ld/21384 PR ld/21384 * testsuite/ld-elf/pr21384.d: New file. * testsuite/ld-elf/pr21384.dl: Likewise. * testsuite/ld-elf/pr21384.ld: Likewise. * testsuite/ld-elf/pr21384.s: Likewise.	9 years ago
H.J. Lu	0aae7e72a2	x86: Run GNU2 TLS tests with working GNU2 TLS support Check if GNU2 TLS really works before running GNU2 TLS tests. * testsuite/ld-i386/tls.exp: Run GNU2 TLS tests only if there is working GNU2 TLS support. * testsuite/ld-x86-64/tls.exp: Likewise. * testsuite/lib/ld-lib.exp (check_gnu2_tls_available): New proc.	9 years ago
H.J. Lu	1670f9c154	x86: Add run-time tests for -mtls-dialect=gnu2 * testsuite/config/default.exp (GNU2_CFLAGS): New. Set to -mtls-dialect=gnu2 if target compiler supports it. * testsuite/ld-i386/tls.exp: Run -mtls-dialect=gnu2 tests. * testsuite/ld-x86-64/tls.exp: Likewise. * testsuite/ld-i386/tlsdesc1a.c: New file. * testsuite/ld-i386/tlsdesc1b.c: Likewise. * testsuite/ld-x86-64/tlsdesc1a.c: Likewise. * testsuite/ld-x86-64/tlsdesc1b.c: Likewise.	9 years ago
H.J. Lu	d6f48aed23	ELF: Add run-time tests for -z now * testsuite/ld-elf/shared.exp: Add run-time tests for -z now. * testsuite/ld-i386/tls.exp: Likewise. * testsuite/ld-ifunc/ifunc.exp: Likewise. * testsuite/ld-x86-64/tls.exp: Likewise.	9 years ago
H.J. Lu	de9a3c4285	x86: Create dynamic sections in create_dynamic_sections 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.	9 years ago
H.J. Lu	97d343d400	x86: Add DT_PLTRELSZ/DT_PLTREL/DT_JMPREL for PLT relocation 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.	9 years ago
Maciej W. Rozycki	23ec1e32b1	PR ld/21334: Always call `_bfd_elf_link_renumber_dynsyms' if required Complement commit `e17b0c351f` ("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.	9 years ago
H.J. Lu	9e9821ddd8	x86-64: Force symbol dynamic if it isn't undefined weak 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.	9 years ago
H.J. Lu	e662f84f5d	i386: Skip pr12570 tests for nacl targets commit `f129e49f4d` Author: H.J. Lu <hjl.tools@gmail.com> Date: Tue Jan 10 11:30:25 2017 -0800 Don't use elf_i386_eh_frame_plt directly fixed i386 PLT eh_frame generation. Skip pr12570 tests since they are for non-nacl targets. * testsuite/ld-i386/pr12570a.d: Skip for nacl targets. * testsuite/ld-i386/pr12570b.d: Likewise.	9 years ago
H.J. Lu	1587442d37	i386: Set ELF_MAXPAGESIZE to 0x1000 for VxWorks commit `a27e437177` 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.	9 years ago
Jose E. Marchesi	8b353c47b7	ld: fix regressions with rett instructions in sparc tests. A few tests in the ld testsuite were expecting the disassembler to emit `rett' instructions in V9. This patch updates the tests to expect `return' instead. ld/ChangeLog: 2017-04-24 Jose E. Marchesi <jose.marchesi@oracle.com> * testsuite/ld-sparc/tlssunbin64.dd: Expect `return' instructions instead of `rett' in V9. * testsuite/ld-sparc/tlssunnopic64.dd: Likewise. * testsuite/ld-sparc/tlssunpic64.dd: Likewise.	9 years ago
H.J. Lu	e133d00576	i386: Avoid dynamic symbol with GOT reference in PIE GOT reference to global symbol in PIE will lead to dynamic symbol. It becomes a problem when "time" or "times" is defined as a variable in an executable, clashing with functions of the same name in libc. If a symbol isn't undefined weak symbol, don't make it dynamic in PIE and generate R_386_RELATIVE relocation. bfd/ PR ld/21402 * elf32-i386.c (elf_i386_link_hash_entry): Add no_finish_dynamic_symbol. (elf_i386_link_hash_newfunc): Set no_finish_dynamic_symbol to 0. (elf_i386_allocate_dynrelocs): If a symbol isn't undefined weak symbol, don't make it dynamic in PIE. (elf_i386_relocate_section): If a symbol isn't dynamic in PIE, set no_finish_dynamic_symbol and generate R_386_RELATIVE relocation for R_386_GOT32 (elf_i386_finish_dynamic_symbol): Abort if no_finish_dynamic_symbol isn't 0. ld/ PR ld/21402 * testsuite/ld-elf/indirect.exp: Don't skip PIE indirect5 and indirect6 tests on i386.	9 years ago
H.J. Lu	3c5fce9bc2	Require --no-dynamic-linker with -static -E/--dynamic-list When -static -E/--dynamic-list are passed to linker, linker may create executable with dynamic sections which aren't supported by run-time. We require --no-dynamic-linker together with -static -E/--dynamic-list before adding dynamic symbol table to static executable. bfd/ PR ld/19617 PR ld/21086 * elflink.c (elf_link_add_object_symbols): Require --no-dynamic-linker with -E/--dynamic-list when creating dynamic sections. ld/ PR ld/19617 PR ld/21086 * testsuite/ld-elf/pr19617a.d: Pass --no-dynamic-linker to ld. * testsuite/ld-elf/pr19617b.d: Likewise. * testsuite/ld-elf/pr19617c.d: Likewise. testsuite/ld-i386/pr19636-4d.d: Likewise. testsuite/ld-elf/readelf.exp: Pass --no-dynamic-linker to ld with --export-dynamic. * testsuite/ld-elf/shared.exp: Pass --no-dynamic-linker to ld with -E.	9 years ago
H.J. Lu	afe9edbf48	Skip PIE indirect5 and indirect6 tests on i386 On i386, since GOT reference is needed to access global symbols in PIE, those symbols are made dynamic. Crash happens when there is a reference to the same global symbol with a different symbol type in a shared object. Since mixing different types of the same symbol doesn't work in general, this patch skips those tests on i386 as well as compiles non-PIE indirect5 and indirect6 tests with $NOPIE_LDFLAGS and $NOPIE_CFLAGS. PR ld/21402 * testsuite/ld-elf/indirect.exp: Pass $NOPIE_LDFLAGS and $NOPIE_CFLAGS to non-PIE indirect5 and indirect6 tests. Skip PIE indirect5 and indirect6 tests on i386.	9 years ago
Maciej W. Rozycki	31321c8031	MIPS/LD/testsuite: Join `__ehdr_start' tests Complement commit `3807734dbe` ("PR ld/15428: MIPS/LD/testsuite: Un-KFAIL `__ehdr_start' test 2") and join tests that do not need to be split anymore. ld/ * testsuite/ld-mips-elf/mips-elf.exp: Join `__ehdr_start' tests.	9 years ago
H.J. Lu	59fa66c538	Handle symbol defined in IR and referenced in DSO We need to make an IR symbol visible if it is defined in an IR object and referenced in a dynamic object. When --as-needed is used, since linker removes the IR symbol reference of the dynamic object if the dynamic object isn't needed in the first pass, the IR definition isn't visible to the dynamic object even if the dynamic object becomes needed in the second pass. Add dynamic_ref_after_ir_def to bfd_link_hash_entry to track IR symbol which is defined in an IR object and later referenced in a dynamic object. dynamic_ref_after_ir_def is preserved when restoring the symbol table for unneeded dynamic object. bfd/ PR ld/21382 * elflink.c (elf_link_add_object_symbols): Preserve dynamic_ref_after_ir_def when restoring the symbol table for unneeded dynamic object. include/ PR ld/21382 * bfdlink.h (bfd_link_hash_entry): Add dynamic_ref_after_ir_def. ld/ PR ld/21382 * plugin.c (is_visible_from_outside): Symbol may be visible from outside if dynamic_ref_after_ir_def is set. (plugin_notice): Set dynamic_ref_after_ir_def if the symbol is defined in an IR object and referenced in a dynamic object. * testsuite/ld-plugin/lto.exp: Run PR ld/21382 tests. * testsuite/ld-plugin/pr21382a.c: New file. * testsuite/ld-plugin/pr21382b.c: Likewise.	9 years ago
H.J. Lu	e492d2f8ac	x86-64: Handle undefined IFUNC symbol with -z now Since undefined IFUNC symbol is treated as normal FUNC symbol, don't abort on undefined IFUNC symbol in the second PLT. bfd/ PR ld/21401 * elf64-x86-64.c (elf_x86_64_finish_dynamic_symbol): Don't abort on on undefined IFUNC symbol in the second PLT. ld/ PR ld/21401 * testsuite/ld-ifunc/ifunc.exp: Add a libtest-2-now.so test with -z now.	9 years ago
Alan Modra	954b63d4c8	Implement -z dynamic-undefined-weak -z nodynamic-undefined-weak is only implemented for x86. (The sparc backend has some support code but doesn't enable the option by including ld/emulparams/dynamic_undefined_weak.sh, and since the support looks like it may be broken I haven't enabled it.) This patch adds the complementary -z dynamic-undefined-weak, extends both options to affect building of shared libraries as well as executables, and adds support for the option on powerpc. include/ * bfdlink.h (struct bfd_link_info <dynamic_undefined_weak>): Revise comment. bfd/ * elflink.c (_bfd_elf_adjust_dynamic_symbol): Hide undefweak or make dynamic for info->dynamic_undefined_weak 0 and 1. * elf32-ppc.c:Formatting. (ensure_undefweak_dynamic): Don't make dynamic when info->dynamic_undefined_weak is zero. (allocate_dynrelocs): Discard undefweak dyn_relocs for info->dynamic_undefined_weak. Discard undef dyn_relocs when not default visibility. Discard undef and undefweak dyn_relocs earlier. (ppc_elf_relocate_section): Adjust to suit. * elf64-ppc.c: Formatting. (ensure_undefweak_dynamic): Don't make dynamic when info->dynamic_undefined_weak is zero. (allocate_dynrelocs): Discard undefweak dyn_relocs for info->dynamic_undefined_weak. Discard them earlier. ld/ * ld.texinfo (dynamic-undefined-weak): Document. (nodynamic-undefined-weak): Document that this option now can be used with shared libs. * emulparams/dynamic_undefined_weak.sh: Support -z dynamic-undefined-weak. * emulparams/elf32ppccommon.sh: Include dynamic_undefined_weak.sh. * testsuite/ld-undefined/weak-undef.exp (undef_weak_so), (undef_weak_exe): New. Use them. Add -z dynamic-undefined-weak and -z nodynamic-undefined-weak tests. * Makefile.am: Update powerpc dependencies. * Makefile.in: Regenerate.	9 years ago
H.J. Lu	e6699019c4	Put soname in the version definition section commit `902e9fc76a` Author: Maciej W. Rozycki <macro@imgtec.com> Date: Tue Feb 21 01:46:42 2017 +0000 PR ld/20828: Move symbol version processing ahead of GC symbol sweep breaks version definition with --version-script --soname. This patch fixes it by getting soname index before generating the version definition section. bfd/ PR ld/21389 * elflink.c (bfd_elf_size_dynamic_sections): Get soname index before generating the version definition section. ld/ PR ld/21389 * testsuite/ld-elf/pr21389.map: New file. * testsuite/ld-elf/pr21389.s: Likewise. * testsuite/ld-elf/pr21389a.d: Likewise. * testsuite/ld-elf/pr21389b.d: Likewise. * testsuite/ld-elf/pr21389c.d: Likewise.	9 years ago
Alan Modra	c5d37467b1	Undo dynamic symbol state after regular object sym type mismatch We already handle the case of an object file first defining a symbol that a later shared library also defines where the symbol types are incompatible. This patch handles the reverse, when a later object file defines an incompatible symbol defined by an earlier shared library. bfd/ * elflink.c (_bfd_elf_merge_symbol): Undo dynamic linking state when a regular object file defines a symbol with incompatible type to that defined by an earlier shared lib. ld/ * testsuite/ld-elf/indirect5a.c, * testsuite/ld-elf/indirect5b.c, * testsuite/ld-elf/indirect5.map, * testsuite/ld-elf/indirect5.out: New test. * testsuite/ld-elf/indirect6a.c: Likewise. * testsuite/ld-elf/indirect.exp (check_dynamic_syms): New proc. Run new tests and check dynsyms.	9 years ago
Alan Modra	fbea15088d	PR 21274, ld segfaults linking PE DLL Don't use fixed size buffers for symbol names. PR 21274 PR 18466 * emultempl/pe.em (pe_find_data_imports): Don't use fixed size symbol buffer. Instead, xmalloc max size needed with space for prefix. Wrap overlong lines. Formatting. Pass symbol buffer copy of name to pe_walk_relocs_of_symbol. (make_inport_fixup): Add "name" param, pass to pe_create_import_fixup. * emultempl/pe.em (pep_find_data_imports): As for pe_find_data_imports. (make_import_fixup): Add "name" param, pass to pep_create_import_fixup. Use bfd_get_signed_* and remove unnecessary casts. Formatting. * pe-dll.c (pe_walk_relocs_of_symbol): Add "name" param. Pass to callback. (make_import_fixup_mark): Add "name" param. Make use of prefix space rather than xmalloc here. (pe_create_import_fixup): Likewise. * pe-dll.h (pe_walk_relocs_of_symbol): Update prototype. (pe_create_import_fixup): Likewise. * pep-dll.h (pep_walk_relocs_of_symbol): Likewise. (pep_create_import_fixup): Likewise.	9 years ago
Nick Clifton	a70f34c01c	Document undocumented linker command line options. ld * ld.texinfo (--strip-discarded): Document. (--embedded-relocs): Document. (--spare-dynamic-tags): Document. (--task-link): Document.	9 years ago
Alan Modra	6f9dbcd42f	PR21287, Inconsistent section type for .init_array and .init_array.42 PR21287 notes that .init_array is correctly given a type of SHT_INIT_ARRAY while .init_array.nnn gets SHT_PROGBITS. This patch fixes that problem, and properly drops warnings from the compiler that would cause the testsuite to fail. My `a44d0bd78` change to check ld_compile status, necessary to pick up compile errors, also meant warnings were not ignored. bfd/ PR 21287 * elf.c (special_sections_f): Match .fini_array and .fini_array.. (special_sections_i): Likewise for .init_array. (special_sections_p): Likewise for .preinit_array. ld/ PR 21287 testsuite/ld-elf/init-fini-arrays.d: Match INIT_ARRAY and FINI_ARRAY. * testsuite/ld-elf/init-fini-arrays.s: Use %init_array and %fini_array section types. * testsuite/lib/ld-lib.exp (default_ld_compile): Trim assembler warnings about "ignoring incorrect section type". (run_ld_link_exec_tests, run_cc_link_tests): Delete old comment.	9 years ago
Alan Modra	37095d07b4	Clean elfvsb files left over from previous runs My mips-linux and mips64-linux testsuite runs have been failing a bunch of visibility tests, seemingly randomly. It turns out the problem occurs when object files are left over in ld/tmpdir from a previous run. * testsuite/ld-elfvsb/elfvsb.exp (visibility_run): Delete sh1p.o, sh2p.o, sh1np.o and sh2np.o before compiling. Use remote_file host exists rather than file exists.	9 years ago
H.J. Lu	a7eaf017f9	Use NOPIE_CFLAGS and NOPIE_LDFLAGS to disable PIE Since not all compilers support -no-pie, NOPIE_CFLAGS and NOPIE_LDFLAGS should be used to disable PIE. PR ld/21090 * testsuite/ld-x86-64/x86-64.exp (undefined_weak): Use NOPIE_CFLAGS and NOPIE_LDFLAGS to disable PIE for the non-pie version of the test.	9 years ago
H.J. Lu	8170f7693b	ELF: Check ELF_COMMON_DEF_P for common symbols Since common symbols that are turned into definitions don't have the DEF_REGULAR flag set, we need to check ELF_COMMON_DEF_P for common symbols. bfd/ PR ld/19579 PR ld/21306 * elf32-s390.c (elf_s390_finish_dynamic_symbol): Check ELF_COMMON_DEF_P for common symbols. * elf64-s390.c (elf_s390_finish_dynamic_symbol): Likewise. * elf64-x86-64.c (elf_x86_64_relocate_section): Likewise. * elflink.c (_bfd_elf_merge_symbol): Revert commits `202ac193bb` and `07492f668d`. ld/ PR ld/19579 PR ld/21306 * testsuite/ld-elf/pr19579a.c (main): Updated.	9 years ago
Nick Clifton	ae3f8c2813	Fix failure in x86_64 linker tests when compiling with a PIE enabled compiler. PR 21090 * testsuite/ld-x86-64/x86-64.exp (undefined_weak): Explicitly disable PIE for the non-pie version of the test.	9 years ago
Alan Modra	5c1f54ce0b	Tweak MBIND ld test for ARM. * testsuite/ld-elf/mbind2a.s: Don't use @, the ARM comment char.	9 years ago
Tristan Gingold	1fd6d11190	pe/coff: handle weak defined symbol for gc-sections. bfd/ * coffgen.c (_bfd_coff_gc_mark_hook): Handle PE weak external symbols with a definition. (_bfd_coff_gc_mark_extra_sections): Fix typo. ld/ * testsuite/ld-pe/pe.exp: New test. * testsuite/ld-pe/weakdef-1.s: New test source. * testsuite/ld-pe/weakdef-1.d: New test.	9 years ago
Alan Modra	3944e22b46	mbind tests: don't check PT_LOAD headers On powerpc-linux, the second PT_LOAD header is RWE. On hppa64-linux, only one PT_LOAD header is present. Since the tests are really about the new GNU_MBIND headers, ignore PT_LOAD and its section mapping. * testsuite/ld-elf/mbind1a.d: Remove matches for PT_LOAD segments. * testsuite/ld-elf/mbind1b.d: Likewise. * testsuite/ld-elf/mbind1c.d: Likewise.	9 years ago
Hans-Peter Nilsson	6ca30fa561	PR ld/21233: change xfails to kfails, fix the indentation issue	9 years ago
Hans-Peter Nilsson	4d5efb852b	PR ld/21233: xfail failing test-parts for cris--*	9 years ago
Maciej W. Rozycki	80070c0d34	PR ld/21233: Avoid sweeping forced-undefined symbols in section GC Complement commit `902e9fc76a` ("PR ld/20828: Move symbol version processing ahead of GC symbol sweep"), commit `b531344c34` ("PR ld/20828: Reorder the symbol sweep stage of section GC") and commit `81ff47b3a5` ("PR ld/20828: Fix linker script symbols wrongly forced local with section GC"), and prevent symbols forcibly entered in the output file with the use of the `--undefined=' or `--require-defined=' linker command line options or the EXTERN linker script command from being swept in section garbage collection and consequently recorded in the dynamic symbol table as local entries. This happens in certain circumstances, where a symbol reference also exists in one of the static input files, however only in a section which is garbage-collected and does not make it to the output file, and the symbol is defined in a dynamic object present in the link. For example with the `i386-linux' target and the `pr21233.s' and `pr21233-l.s' sources, and the `pr21233.ld' linker script included with this change we get: $ as -o pr21233-l.o pr21233-l.s $ ld -shared -T pr21233.ld -o libpr21233.so pr21233-l.o $ as -o pr21233.o pr21233.s $ ld --gc-sections -e foo --require-defined=bar -T pr21233.ld -o pr21233 pr21233.o libpr21233.so $ readelf --dyn-syms pr21233 Symbol table '.dynsym' contains 2 entries: Num: Value Size Type Bind Vis Ndx Name 0: 00000000 0 NOTYPE LOCAL DEFAULT UND 1: 00000000 0 OBJECT LOCAL DEFAULT UND bar $ which makes the run-time `bar' dependency of the `pr21233' executable different from its corresponding link-time dependency, i.e. the presence of `libpr21233.so' and its `bar' symbol is required at the link time, however at the run time a copy of `libpr21233.so' without `bar' will do. Similarly with `--undefined=' and EXTERN which do not actually require the reference to the symbol requested to be satisfied with a definition at the link time, however once the definition has been pulled at the link time, so it should at the dynamic load time. Additionally with the `mips-linux' target we get: $ ld --gc-sections -e foo --require-defined=bar -T pr21233.ld -o pr21233 pr21233.o libpr21233.so ld: BFD (GNU Binutils) 2.28.51.20170324 assertion fail .../bfd/elfxx-mips.c:3861 $ as the target is not prepared to handle such a local dynamic symbol. With this change in effect we get: $ readelf --dyn-syms pr21233 Symbol table '.dynsym' contains 2 entries: Num: Value Size Type Bind Vis Ndx Name 0: 00000000 0 NOTYPE LOCAL DEFAULT UND 1: 00000000 0 OBJECT GLOBAL DEFAULT UND bar $ instead, for both targets. ld/ PR ld/21233 * ldlang.c (insert_undefined): Set `mark' for ELF symbols. * testsuite/ld-elf/pr21233.sd: New test. * testsuite/ld-elf/pr21233-l.sd: New test. * testsuite/ld-elf/pr21233.ld: New test linker script. * testsuite/ld-elf/pr21233-e.ld: New test linker script. * testsuite/ld-elf/pr21233.s: New test source. * testsuite/ld-elf/pr21233-l.s: New test source. * testsuite/ld-elf/shared.exp: Run the new tests.	10 years ago
H.J. Lu	a91e1603af	Support ELF SHF_GNU_MBIND and PT_GNU_MBIND_XXX Mark an ALLOC section, which should be placed in special memory area, with SHF_GNU_MBIND. Its sh_info field indicates the special memory type. GNU_MBIND section names start with ".mbind" so that they are placed as orphan sections by linker. All input GNU_MBIND sections with the same sh_type, sh_flags and sh_info are placed in one output GNU_MBIND section. In executable and shared object, create a GNU_MBIND segment for each GNU_MBIND section and its segment type is PT_GNU_MBIND_LO plus the sh_info value. Each GNU_MBIND segment is aligned at page boundary. The assembler syntax: .section .mbind.foo,"adx",%progbits ^ 0: Special memory type. \| 'd' for SHF_GNU_MBIND. .section .mbind.foo,"adx",%progbits,0x1 ^ 1: Special memory type. \| 'd' for SHF_GNU_MBIND. .section .mbind.bar,"adG",%progbits,.foo_group,comdat,0x2 ^ 2: Special memory type. \| 'd' for SHF_GNU_MBIND. bfd/ * elf.c (get_program_header_size): Add a GNU_MBIND segment for each GNU_MBIND section and align GNU_MBIND section to page size. (_bfd_elf_map_sections_to_segments): Create a GNU_MBIND segment for each GNU_MBIND section. (_bfd_elf_init_private_section_data): Copy sh_info from input for GNU_MBIND section. binutils/ * NEWS: Mention support for ELF SHF_GNU_MBIND and PT_GNU_MBIND_XXX. * readelf.c (get_segment_type): Handle PT_GNU_MBIND_XXX. (get_elf_section_flags): Handle SHF_GNU_MBIND. (process_section_headers): Likewise. * testsuite/binutils-all/mbind1.s: New file. * testsuite/binutils-all/objcopy.exp: Run readelf test on mbind1.s. gas/ * NEWS: Mention support for ELF SHF_GNU_MBIND. * config/obj-elf.c (section_match): New. (get_section): Match both sh_info and group name. (obj_elf_change_section): Add argument for sh_info. Pass both sh_info and group name to get_section. Issue an error for SHF_GNU_MBIND section without SHF_ALLOC. Set sh_info. (obj_elf_parse_section_letters): Set SHF_GNU_MBIND for 'd'. (obj_elf_section): Support SHF_GNU_MBIND section info. * config/obj-elf.h (obj_elf_change_section): Add argument for sh_info. * config/tc-arm.c (start_unwind_section): Pass 0 as sh_info to obj_elf_change_section. * config/tc-ia64.c (obj_elf_vms_common): Likewise. * config/tc-microblaze.c (microblaze_s_data): Likewise. (microblaze_s_sdata): Likewise. (microblaze_s_rdata): Likewise. (microblaze_s_bss): Likewise. * config/tc-mips.c (s_change_section): Likewise. * config/tc-msp430.c (msp430_profiler): Likewise. * config/tc-rx.c (parse_rx_section): Likewise. * config/tc-tic6x.c (tic6x_start_unwind_section): Likewise. * doc/as.texinfo: Document 'd' for SHF_GNU_MBIND. * testsuite/gas/elf/elf.exp: Run section12a, section12b and section13. * testsuite/gas/elf/section10.d: Updated. * testsuite/gas/elf/section10.s: Likewise. * testsuite/gas/elf/section12.s: New file. * testsuite/gas/elf/section12a.d: Likewise. * testsuite/gas/elf/section12b.d: Likewise. * testsuite/gas/elf/section13.l: Likewise. * testsuite/gas/elf/section13.d: Likewise. * testsuite/gas/elf/section13.s: Likewise. include/ * elf/common.h (PT_GNU_MBIND_NUM): New. (PT_GNU_MBIND_LO): Likewise. (PT_GNU_MBIND_HI): Likewise. (SHF_GNU_MBIND): Likewise. ld/ * NEWS: Mention support for ELF SHF_GNU_MBIND and PT_GNU_MBIND_XXX. * emultempl/elf32.em (gld${EMULATION_NAME}_place_orphan): Place input GNU_MBIND sections with the same type, attributes and sh_info field into a single output GNU_MBIND section. * testsuite/ld-elf/elf.exp: Run mbind2a and mbind2b. * testsuite/ld-elf/mbind1.s: New file. * testsuite/ld-elf/mbind1a.d: Likewise. * testsuite/ld-elf/mbind1b.d: Likewise. * testsuite/ld-elf/mbind1c.d: Likewise. * testsuite/ld-elf/mbind2a.s: Likewise. * testsuite/ld-elf/mbind2b.c: Likewise.	9 years ago
H.J. Lu	2514e33e01	Correct the ChangeLog entry	9 years ago
H.J. Lu	46bed6796d	ld: Support ELF GNU program properties From .note.gnu.property section in each ELF input, we build a list of GNU properties if .note.gnu.property section isn't corrupt. The unknown properties are ignored. All property lists in relocatable inputs are merged into an output property list. When -z stack-size=N is used and N isn't 0, the GNU_PROPERTY_STACK_SIZE property will be merged with or added to the output property list. .note.gnu.property section is generated in output from the output property list. bfd/ * Makefile.am (BFD32_BACKENDS): Add elf-properties.lo. (BFD32_BACKENDS_CFILES): Add elf-properties.c. * configure.ac (elf): Add elf-properties.lo. * Makefile.in: Regenerated. * configure: Likewise. * elf-bfd.h (elf_property_kind): New. (elf_property): Likewise. (elf_property_list): Likewise. (elf_properties): Likewise. (_bfd_elf_parse_gnu_properties): Likewise. (_bfd_elf_get_property): Likewise. (_bfd_elf_link_setup_gnu_properties): Likewise. (elf_backend_data): Add parse_gnu_properties, merge_gnu_properties and setup_gnu_properties. (elf_obj_tdata): Add properties. * elf-properties.c: New file. * elf32-i386.c (elf_i386_parse_gnu_properties): New. (elf_i386_merge_gnu_properties): Likewise. (elf_backend_parse_gnu_properties): Likewise. (elf_backend_merge_gnu_properties): Likewise. * elf64-x86-64.c (elf_x86_64_parse_gnu_properties): Likewise. (elf_x86_64_merge_gnu_properties): Likewise. (elf_backend_parse_gnu_properties): Likewise. (elf_backend_merge_gnu_properties): Likewise. * elfxx-target.h (elf_backend_merge_gnu_properties): Likewise. (elf_backend_parse_gnu_properties): Likewise. (elf_backend_setup_gnu_properties): Likewise. (elfNN_bed): Add elf_backend_parse_gnu_properties, elf_backend_merge_gnu_properties and elf_backend_setup_gnu_properties. ld/ * ld/NEWS: Mention support for ELF GNU program properties. * emultempl/elf32.em (gld${EMULATION_NAME}_after_open): Call ELF setup_gnu_properties. * testsuite/ld-i386/i386.exp: Run property tests for Linux/i386. * testsuite/ld-i386/pass.c: New file. * testsuite/ld-i386/property-1.r: Likewise. * testsuite/ld-i386/property-2.r: Likewise. * testsuite/ld-i386/property-3.r: Likewise. * testsuite/ld-i386/property-4.r: Likewise. * testsuite/ld-i386/property-5.r: Likewise. * testsuite/ld-i386/property-6.r: Likewise. * testsuite/ld-i386/property-6a.c: Likewise. * testsuite/ld-i386/property-6b.c: Likewise. * testsuite/ld-i386/property-6c.S: Likewise. * testsuite/ld-i386/property-7.r: Likewise. * testsuite/ld-i386/property-no-copy.S: Likewise. * testsuite/ld-i386/property-stack.S: Likewise. * testsuite/ld-i386/property-unsorted-1.S: Likewise. * testsuite/ld-i386/property-unsorted-2.S: Likewise. * testsuite/ld-i386/property-x86-1.S: Likewise. * testsuite/ld-i386/property-x86-2.S: Likewise. * testsuite/ld-x86-64/pass.c: Likewise. * testsuite/ld-x86-64/property-1.r: Likewise. * testsuite/ld-x86-64/property-2.r: Likewise. * testsuite/ld-x86-64/property-3.r: Likewise. * testsuite/ld-x86-64/property-4.r: Likewise. * testsuite/ld-x86-64/property-5.r: Likewise. * testsuite/ld-x86-64/property-6.r: Likewise. * testsuite/ld-x86-64/property-6a.c: Likewise. * testsuite/ld-x86-64/property-6b.c: Likewise. * testsuite/ld-x86-64/property-6c.S: Likewise. * testsuite/ld-x86-64/property-7.r: Likewise. * testsuite/ld-x86-64/property-no-copy.S: Likewise. * testsuite/ld-x86-64/property-stack.S: Likewise. * testsuite/ld-x86-64/property-unsorted-1.S: Likewise. * testsuite/ld-x86-64/property-unsorted-2.S: Likewise. * testsuite/ld-x86-64/property-x86-1.S: Likewise. * testsuite/ld-x86-64/property-x86-2.S: Likewise. * testsuite/ld-x86-64/x86-64.exp: Run property tests for Linux/x86-64.	9 years ago
Hans-Peter Nilsson	086554e8e6	Fix for PR ld/16044: elf32-cris.c h->plt.refcount inconsistency	10 years ago
Maciej W. Rozycki	c72cea5aec	readelf: Fix incorrect "Version definition past end of section" message (ChangeLog) Correct ChangeLog entry for commit `c9f02c3e29` ("readelf: Fix incorrect "Version definition past end of section" message").	10 years ago
Sandra Loosemore	4c8798c992	Disable shared library tests for nios2--elf. The Nios II processor documentation defines relocations for PIC and shared libraries as part of the GNU/Linux ABI only; GCC rejects -fpic on bare-metal. 2017-03-21 Sandra Loosemore <sandra@codesourcery.com> ld/ testsuite/lib/ld-lib.exp (check_shared_lib_support): Return false for nios2-*-elf.	10 years ago
Tristan Gingold	2170171889	ld: check overflow only for allocated sections. * ldlang.c (lang_check_section_addresses): Check only for allocated sections.	10 years ago
Alan Modra	1d3fa25f58	ld sec64k test fix * testsuite/ld-elf/sec64k.exp: Don't run on h8300 and ip2k.	10 years ago
Tristan Gingold	9494d96366	ld-checks: tweak overflow checks. * testsuite/ld-checks/checks.exp (overflow_check): Disable for non-elf targets.	10 years ago
H.J. Lu	9216a6f335	Use addr_mask to check VMA and LMA Since BFD64 may be used on 32-bit address, we need to apply addr_mask to check VMA and LMA. * ldlang.c (lang_check_section_addresses): Use addr_mask to check VMA and LMA.	10 years ago

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3470 Commits (f604c2a2a54ebf88e4a51986c7cdedffe7b3313a)