[Bug gas/26722] New: arm-unknown-elf sets inconsistent ELF OSABI values
https://sourceware.org/bugzilla/show_bug.cgi?id=26722 Bug ID: 26722 Summary: arm-unknown-elf sets inconsistent ELF OSABI values Product: binutils Version: 2.36 (HEAD) Status: UNCONFIRMED Severity: normal Priority: P2 Component: gas Assignee: unassigned at sourceware dot org Reporter: jozef.l at mittosystems dot com Target Milestone: --- When assembling an SHF_GNU_MBIND section for arm-unknown-elf, gas/config/obj-elf.c:obj_elf_section will set elf_backend_data->elf_osabi to ELFOSABI_GNU from ELFOSABI_NONE. However, bfd/elf32-arm.c:elf32_arm_init_file_header will set i_ehdrp->e_ident[EI_OSABI] to ELFOSABI_ARM for EF_ARM_EABI_VERSION == EF_ARM_EABI_UNKNOWN. This is the default for non-eabi ARM targets, such as arm-unknown-elf. Is arm-unknown-elf a legacy target? Should it just always set the ELF OSABI to ELFOSABI_ARM, thereby disabling any modern GNU ELF OSABI extensions? Or should elf32_arm_init_file_header only set i_ehdrp->e_ident[EI_OSABI] to ELFOSABI_ARM if elf_backend_data->elf_osabi is ELF_OSABI_NONE? The following testcase exposes the problem: .section ".mbind.foo","adx",%progbits $ arm-unknown-elf-as armbug.s arm-unknown-elf-as: GNU_MBIND section is unsupported armbug.s: Assembler messages: armbug.s: Fatal error: can't close a.out: sorry, cannot handle this file This error message is coming from bfd/elf.c (_bfd_elf_final_write_processing), which is why the the file close error appears. If GAS caught the error in obj_elf_section, then an error would be emitted, but it wouldn't be fatal. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug gas/26722] arm-unknown-elf sets inconsistent ELF OSABI values
https://sourceware.org/bugzilla/show_bug.cgi?id=26722 Jozef Lawrynowicz changed: What|Removed |Added Target||arm-unknown-elf -- You are receiving this mail because: You are on the CC list for the bug.
[Bug gas/26703] Support x86 micro-architecture ISA level marker
https://sourceware.org/bugzilla/show_bug.cgi?id=26703 --- Comment #2 from cvs-commit at gcc dot gnu.org --- The master branch has been updated by H.J. Lu : https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=32930e4edbc06bc6f10c435dbcc63131715df678 commit 32930e4edbc06bc6f10c435dbcc63131715df678 Author: H.J. Lu Date: Fri Oct 9 05:05:57 2020 -0700 x86: Support GNU_PROPERTY_X86_ISA_1_V[234] marker GCC 11 supports -march=x86-64-v[234] to enable x86 micro-architecture ISA levels: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=97250 Update GNU_PROPERTY_X86_ISA_1_XXX macros: https://gitlab.com/x86-psABIs/x86-64-ABI/-/merge_requests/13 in x86 ELF binaries to indicate that micro-architecture ISA levels required to execute the binary: #define GNU_PROPERTY_X86_ISA_1_NEEDED (GNU_PROPERTY_X86_UINT32_OR_LO + 2) #define GNU_PROPERTY_X86_ISA_1_USED (GNU_PROPERTY_X86_UINT32_OR_AND_LO + 2) #define GNU_PROPERTY_X86_ISA_1_V2 (1U << 0) #define GNU_PROPERTY_X86_ISA_1_V3 (1U << 1) #define GNU_PROPERTY_X86_ISA_1_V4 (1U << 2) The previous GNU_PROPERTY_X86_ISA_1_XXX macros are deprecated and renamed to GNU_PROPERTY_X86_COMPAT_2_ISA_1_XXX. In addition to EM_X86_64, GNU_PROPERTY_X86_ISA_1_V[234] marker can be used by ld.so to detect the x86-64-v4 shared library placed in an x86-64-v2 directory by mistake on an x86-64-v2 machine to avoid crashes on x86-64-v4 instructions. Add -z x86-64-v[234] linker command line option to mark x86-64-v[234] ISA level as needed. Also add #define GNU_PROPERTY_X86_FEATURE_2_MASK (1U << 11) for mask registers. bfd/ PR gas/26703 * elf-linker-x86.h (elf_linker_x86_params): Add isa_level. * elfxx-x86.c (_bfd_x86_elf_merge_gnu_properties): Merge GNU_PROPERTY_X86_ISA_1_V[234]. (_bfd_x86_elf_link_setup_gnu_properties): Generate GNU_PROPERTY_X86_ISA_1_V[234] for -z x86-64-v[234]. binutils/ PR gas/26703 * readelf.c (decode_x86_compat_2_isa): New function. (decode_x86_isa): Updated for new X86_ISA_1_XXX bits. (decode_x86_feature_1): Handle GNU_PROPERTY_X86_FEATURE_2_MASK. (print_gnu_property_note): Handle X86_COMPAT_2_ISA_1_USED, and X86_COMPAT_2_ISA_1_NEEDED. * testsuite/binutils-all/i386/pr21231b.s: Updated to the current GNU_PROPERTY_X86_ISA_1_USED and GNU_PROPERTY_X86_ISA_1_NEEDED values. * testsuite/binutils-all/x86-64/pr21231b.s: Likewise. * testsuite/binutils-all/x86-64/pr23494a.s: Likewise. * testsuite/binutils-all/x86-64/pr23494b.s: Likewise. * testsuite/binutils-all/x86-64/pr23494c.s: Likewise. * testsuite/binutils-all/i386/empty.d: Updated. * testsuite/binutils-all/i386/ibt.d: Likewise. * testsuite/binutils-all/i386/pr21231a.d: Likewise. * testsuite/binutils-all/i386/pr21231b.d: Likewise. * testsuite/binutils-all/i386/shstk.d: Likewise. * testsuite/binutils-all/x86-64/empty-x32.d: Likewise. * testsuite/binutils-all/x86-64/empty.d: Likewise. * testsuite/binutils-all/x86-64/ibt-x32.d: Likewise. * testsuite/binutils-all/x86-64/ibt.d: Likewise. * testsuite/binutils-all/x86-64/pr21231a.d: Likewise. * testsuite/binutils-all/x86-64/pr21231b.d: Likewise. * testsuite/binutils-all/x86-64/pr23494a-x32.d: Likewise. * testsuite/binutils-all/x86-64/pr23494a.d: Likewise. * testsuite/binutils-all/x86-64/pr23494c-x32.d: Likewise. * testsuite/binutils-all/x86-64/pr23494c.d: Likewise. * testsuite/binutils-all/x86-64/pr23494d-x32.d: Likewise. * testsuite/binutils-all/x86-64/pr23494d.d: Likewise. * testsuite/binutils-all/x86-64/pr23494e-x32.d: Likewise. * testsuite/binutils-all/x86-64/pr23494e.d: Likewise. * testsuite/binutils-all/x86-64/shstk-x32.d: Likewise. * testsuite/binutils-all/x86-64/shstk.d: Likewise. gas/ PR gas/26703 * config/tc-i386.c (xstate): Add xstate_mask. (md_assemble): Check i.types[j], instead of i.tm.operand_types[j], for xstate. Set xstate_mask, instead of xstate_zmm, for RegMask. (output_insn): Update for GNU_PROPERTY_X86_ISA_1_V[234]. Update xstate for mask register and VSIB. * testsuite/gas/i386/i386.exp: Run more GNU_PROPERTY tests. * testsuite/gas/i386/property-1.s: Updated to the current GNU_PROPERTY_X86_ISA_1_USED value. * testsuite/gas/i386/property-2.s: Only keep cmove. * testsuite/gas/i386/property-3.s: Changed to addsubpd. * testsuite/gas/i386/property-1.d: Updated. * testsuite/gas/i386/property-2.d: Likewise.
[Bug gas/26703] Support x86 micro-architecture ISA level marker
https://sourceware.org/bugzilla/show_bug.cgi?id=26703 H.J. Lu changed: What|Removed |Added Resolution|--- |FIXED Status|NEW |RESOLVED Target Milestone|--- |2.36 --- Comment #3 from H.J. Lu --- Fixed. -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/26626] Provide a hook to customize missing library error handling
https://sourceware.org/bugzilla/show_bug.cgi?id=26626 --- Comment #5 from Nick Clifton --- Hi Serge, I am going to have a go at implementing this feature. Would you mind uploading an example script that I can use for testing purposes ? Cheers Nick -- You are receiving this mail because: You are on the CC list for the bug.
[Bug ld/26626] Provide a hook to customize missing library error handling
https://sourceware.org/bugzilla/show_bug.cgi?id=26626 Nick Clifton changed: What|Removed |Added Status|NEW |ASSIGNED -- You are receiving this mail because: You are on the CC list for the bug.
