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2022-07-22i386: Don't allow GOTOFF relocation against IFUNC symbol for PIClinaro-local/ci/tcwg_kernel/llvm-release-arm-stable-defconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-stable-allyesconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-stable-allnoconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-stable-allmodconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-norov-defconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-norov-allyesconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-norov-allnoconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-norov-allmodconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-next-defconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-next-allyesconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-next-allnoconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-next-allmodconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-mainline-defconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-mainline-allyesconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-mainline-allnoconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-mainline-allmodconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-lts-defconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-lts-allyesconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-lts-allnoconfiglinaro-local/ci/tcwg_kernel/llvm-release-arm-lts-allmodconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-stable-defconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-stable-allyesconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-stable-allnoconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-stable-allmodconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-norov-defconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-norov-allyesconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-norov-allnoconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-norov-allmodconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-next-defconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-next-allyesconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-next-allnoconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-next-allmodconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-mainline-defconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-mainline-allyesconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-mainline-allnoconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-mainline-allmodconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-lts-defconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-lts-allyesconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-lts-allnoconfiglinaro-local/ci/tcwg_kernel/llvm-release-aarch64-lts-allmodconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-stable-defconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-stable-allyesconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-stable-allnoconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-stable-allmodconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-norov-defconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-norov-allyesconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-norov-allnoconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-norov-allmodconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-next-defconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-next-allyesconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-next-allnoconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-next-allmodconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-mainline-defconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-mainline-allyesconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-mainline-allnoconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-mainline-allmodconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-lts-defconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-lts-allyesconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-lts-allnoconfiglinaro-local/ci/tcwg_kernel/gnu-release-arm-lts-allmodconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-stable-defconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-stable-allyesconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-stable-allnoconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-stable-allmodconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-norov-defconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-norov-allyesconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-norov-allnoconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-norov-allmodconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-next-defconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-next-allyesconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-next-allnoconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-next-allmodconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-mainline-defconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-mainline-allyesconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-mainline-allnoconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-mainline-allmodconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-lts-defconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-lts-allyesconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-lts-allnoconfiglinaro-local/ci/tcwg_kernel/gnu-release-aarch64-lts-allmodconfiglinaro-local/ci/tcwg_bmk_llvm_tx1/llvm-release-aarch64-spec2k6-O3_LTOlinaro-local/ci/tcwg_bmk_llvm_tx1/llvm-release-aarch64-spec2k6-O3linaro-local/ci/tcwg_bmk_llvm_tx1/llvm-release-aarch64-spec2k6-O2_LTOlinaro-local/ci/tcwg_bmk_llvm_tx1/llvm-release-aarch64-spec2k6-O2linaro-local/ci/tcwg_bmk_llvm_tk1/llvm-release-arm-spec2k6-O3_LTOlinaro-local/ci/tcwg_bmk_llvm_tk1/llvm-release-arm-spec2k6-O3linaro-local/ci/tcwg_bmk_llvm_sq/llvm-release-aarch64-spec2k6-Oslinaro-local/ci/tcwg_bmk_llvm_apm/llvm-release-arm-spec2k6-Oz_LTOlinaro-local/ci/tcwg_bmk_llvm_apm/llvm-release-arm-spec2k6-Ozlinaro-local/ci/tcwg_bmk_llvm_apm/llvm-release-arm-spec2k6-Os_LTOlinaro-local/ci/tcwg_bmk_llvm_apm/llvm-release-arm-spec2k6-Oslinaro-local/ci/tcwg_bmk_llvm_apm/llvm-release-aarch64-spec2k6-Ozlinaro-local/ci/tcwg_bmk_llvm_apm/llvm-release-aarch64-spec2k6-Os_LTOlinaro-local/ci/tcwg_bmk_gnu_tx1/gnu-release-aarch64-spec2k6-O3_LTOlinaro-local/ci/tcwg_bmk_gnu_tx1/gnu-release-aarch64-spec2k6-O3linaro-local/ci/tcwg_bmk_gnu_tx1/gnu-release-aarch64-spec2k6-O2_LTOlinaro-local/ci/tcwg_bmk_gnu_tx1/gnu-release-aarch64-spec2k6-O2linaro-local/ci/tcwg_bmk_gnu_tk1/gnu-release-arm-spec2k6-O3_LTOlinaro-local/ci/tcwg_bmk_gnu_tk1/gnu-release-arm-spec2k6-O3linaro-local/ci/tcwg_bmk_gnu_tk1/gnu-release-arm-spec2k6-O2_LTOlinaro-local/ci/tcwg_bmk_gnu_tk1/gnu-release-arm-spec2k6-O2linaro-local/ci/tcwg_bmk_gnu_sq/gnu-release-aarch64-spec2k6-Oslinaro-local/ci/tcwg_bmk_gnu_eabi_stm32/gnu_eabi-release-arm_eabi-coremark-Oslinaro-local/ci/tcwg_bmk_gnu_eabi_stm32/gnu_eabi-release-arm_eabi-coremark-O3_LTOlinaro-local/ci/tcwg_bmk_gnu_eabi_stm32/gnu_eabi-release-arm_eabi-coremark-O3linaro-local/ci/tcwg_bmk_gnu_apm/gnu-release-arm-spec2k6-Os_LTOlinaro-local/ci/tcwg_bmk_gnu_apm/gnu-release-arm-spec2k6-Oslinaro-local/ci/tcwg_bmk_gnu_apm/gnu-release-aarch64-spec2k6-OsH.J. Lu
We can't use the PLT entry as the function address for PIC since the PIC register may not be set up properly for indirect call. bfd/ PR ld/27998 * elf32-i386.c (elf_i386_relocate_section): Don't allow GOTOFF relocation against IFUNC symbol for PIC. ld/ PR ld/27998 * testsuite/ld-i386/pr27998a.d: Replace -shared with -e bar. * testsuite/ld-i386/pr27998b.d: Expect a linker error. * testsuite/ld-ifunc/ifunc-2-i386-now.d: Updated. * testsuite/ld-ifunc/ifunc-2-local-i386-now.d: Likewise. * testsuite/ld-ifunc/ifunc-2-i386.s: Replace @GOTOFF with @GOT. * testsuite/ld-ifunc/ifunc-2-local-i386.s: Likewise. (cherry picked from commit 8f29211c3f0a6335c17e0a90396c146facf6dba4)
2016-08-29i386: Issue an error on non-PIC call to IFUNC in PIC objectH.J. Lu
On i386, IFUNC function must be called via PLT. Since PLT in PIC object uses EBX register, R_386_PLT32 relocation must be used to call IFUNC function even when IFUNC function is defined locally. Linker should issue an error when R_386_PC32 relocation is used to call IFUNC function. Since PR ld/19784 tests doesn't use PLT relocation to local IFUNC function, they are moved to the x86-64 test directory. bfd/ PR ld/14961 PR ld/20515 * elf32-i386.c (elf_i386_check_relocs): Issue an error when R_386_PC32 relocation is used to call IFUNC function in PIC object. ld/ PR ld/14961 PR ld/20515 * testsuite/ld-i386/i386.exp: Run pr20515. * testsuite/ld-i386/pr20515.d: New file. * testsuite/ld-i386/pr20515.s: Likewise. * testsuite/ld-ifunc/ifunc-14a.s: Use R_386_PLT32 to call IFUNC function. * testsuite/ld-ifunc/ifunc-14c.s: Likewise. * testsuite/ld-ifunc/ifunc-2-i386.s: Likewise. * testsuite/ld-ifunc/ifunc-2-local-i386.s: Likewise. * testsuite/ld-ifunc/ifunc.exp: Move PR ld/19784 tests to ... * testsuite/ld-x86-64/x86-64.exp: Here. * testsuite/ld-ifunc/pr19784a.c: Moved to ... * testsuite/ld-x86-64/pr19784a.c: Here. * testsuite/ld-ifunc/pr19784b.c: Moved to ... * testsuite/ld-x86-64/pr19784b.c: Here. * testsuite/ld-ifunc/pr19784c.c: Moved to ... * testsuite/ld-x86-64/pr19784c.c: Here.
2009-06-01bfd/H.J. Lu
2009-06-01 H.J. Lu <hongjiu.lu@intel.com> PR ld/10205 * elf32-i386.c (elf_howto_table): Add R_386_IRELATIVE. (elf_i386_reloc_type_lookup): Likewise. (R_386_tls): Removed. (R_386_irelative): New. (R_386_vt_offset): Updated. (elf_i386_rtype_to_howto): Likewise. (elf_i386_link_hash_table): Add igotplt, iplt and irelplt. (elf_i386_link_hash_table_create): Initialize igotplt, iplt and irelplt. (elf_i386_check_relocs): Handle STT_GNU_IFUNC symbol first. (elf_i386_adjust_dynamic_symbol): Likewise. (elf_i386_allocate_dynrelocs): Likewise. (elf_i386_relocate_section): Likewise. (elf_i386_size_dynamic_sections): Set up .iplt and .igot.plt sections. (elf_i386_finish_dynamic_symbol): When building a static executable, use .iplt, .igot.plt and .rel.iplt sections for STT_GNU_IFUNC symbols. Generate R_386_IRELATIVE relocation for locally defined STT_GNU_IFUNC symbol. * elf64-x86-64.c (x86_64_elf_howto): Add R_X86_64_IRELATIVE. (x86_64_reloc_map): Likewise. (R_X86_64_standard): Updated. (elf64_x86_64_link_hash_table): Add igotplt, iplt and irelplt. (elf64_x86_64_link_hash_table_create): Initialize igotplt, iplt and irelplt. (elf64_x86_64_check_relocs): Handle STT_GNU_IFUNC symbol first. (elf64_x86_64_adjust_dynamic_symbol): Likewise. (elf64_x86_64_allocate_dynrelocs): Likewise. (elf64_x86_64_relocate_section): Likewise. (elf64_x86_64_size_dynamic_sections): Set up .iplt and .igot.plt sections. (elf64_x86_64_finish_dynamic_symbol): When building a static executable, use .iplt, .igot.plt and .rela.iplt sections for STT_GNU_IFUNC symbols. Generate R_X86_64_IRELATIVE relocation for locally defined STT_GNU_IFUNC symbol. * reloc.c (BFD_RELOC_386_IRELATIVE): New. (BFD_RELOC_X86_64_IRELATIVE): Likewise. * bfd-in2.h: Regenerated. * libbfd.h: Likewise. include/elf/ 2009-06-01 H.J. Lu <hongjiu.lu@intel.com> PR ld/10205 * i386.h (R_386_IRELATIVE): New. * x86-64.h (R_X86_64_IRELATIVE): Likewise. ld/testsuite/ 2009-06-01 H.J. Lu <hongjiu.lu@intel.com> PR ld/10205 * ld-ifunc/ifunc.exp (contains_irelative_reloc): New. Use it on executable and shared library. Run *.d. * ld-ifunc/lib.c: Add a hidden alias, __GI_library_func2, for library_func2. (library_func): New. * ld-ifunc/ifunc-1-x86.d: New. * ld-ifunc/ifunc-1-x86.s: Likewise. * ld-ifunc/ifunc-2-i386.d: Likewise. * ld-ifunc/ifunc-2-i386.s: Likewise. * ld-ifunc/ifunc-2-x86-64.d: Likewise. * ld-ifunc/ifunc-2-x86-64.s: Likewise. * ld-ifunc/ifunc-3a-x86.d: Likewise. * ld-ifunc/ifunc-3b-x86.d: Likewise. * ld-ifunc/ifunc-3-x86.s: Likewise. * ld-ifunc/ifunc-4-x86.d: Likewise. * ld-ifunc/ifunc-4-x86.s: Likewise. * ld-ifunc/ifunc-5-i386.d: Likewise. * ld-ifunc/ifunc-5-i386.s: Likewise. * ld-ifunc/ifunc-5-x86-64.d: Likewise. * ld-ifunc/ifunc-5-x86-64.s: Likewise.
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