From 71c4e95abe66ec9fc2c064268e3f9640a5b951d8 Mon Sep 17 00:00:00 2001 From: Alan Modra Date: Thu, 18 Jul 2019 11:12:40 +0930 Subject: [PATCH] [PowerPC64] Use STN_UNDEF internally for edited relocs It's not correct to use non-STT_TLS symbols with TLS relocation, not that it matters much when editing relocs, but this edited reloc can be output by --emit-relocs. So don't use a symbol on the reloc. * elf64-ppc.c (ppc64_elf_relocate_section): Don't bother selecting a TLS section symbol for edited relocs. Tighten TLS symbol/reloc match test. --- bfd/ChangeLog | 6 ++++++ bfd/elf64-ppc.c | 39 ++++++--------------------------------- 2 files changed, 12 insertions(+), 33 deletions(-) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index eb64f86389f..a9dce78afca 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,9 @@ +2019-07-18 Alan Modra + + * elf64-ppc.c (ppc64_elf_relocate_section): Don't bother selecting + a TLS section symbol for edited relocs. Tighten TLS symbol/reloc + match test. + 2019-07-18 Alan Modra * elf64-ppc.c (TLS_EXPLICIT): Define as 256. diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c index 0c0d4a4c13e..df4a12c58d7 100644 --- a/bfd/elf64-ppc.c +++ b/bfd/elf64-ppc.c @@ -14304,10 +14304,7 @@ ppc64_elf_relocate_section (bfd *output_bfd, && (h == NULL || h->elf.root.type == bfd_link_hash_defined || h->elf.root.type == bfd_link_hash_defweak) - && (IS_PPC64_TLS_RELOC (r_type) - != (sym_type == STT_TLS - || (sym_type == STT_SECTION - && (sec->flags & SEC_THREAD_LOCAL) != 0)))) + && IS_PPC64_TLS_RELOC (r_type) != (sym_type == STT_TLS)) { if ((tls_mask & TLS_TLS) != 0 && (r_type == R_PPC64_TLS @@ -14547,20 +14544,8 @@ ppc64_elf_relocate_section (bfd *output_bfd, if (tls_gd == 0) { /* Was an LD reloc. */ - if (toc_symndx) - sec = local_sections[toc_symndx]; - for (r_symndx = 0; - r_symndx < symtab_hdr->sh_info; - r_symndx++) - if (local_sections[r_symndx] == sec) - break; - if (r_symndx >= symtab_hdr->sh_info) - r_symndx = STN_UNDEF; + r_symndx = STN_UNDEF; rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; - if (r_symndx != STN_UNDEF) - rel->r_addend -= (local_syms[r_symndx].st_value - + sec->output_offset - + sec->output_section->vma); } else if (toc_symndx != 0) { @@ -14669,24 +14654,12 @@ ppc64_elf_relocate_section (bfd *output_bfd, if (ELF64_R_TYPE (rel[1].r_info) == R_PPC64_PLTCALL) bfd_put_32 (output_bfd, NOP, contents + offset + 4); - if (toc_symndx) - sec = local_sections[toc_symndx]; - for (r_symndx = 0; - r_symndx < symtab_hdr->sh_info; - r_symndx++) - if (local_sections[r_symndx] == sec) - break; - if (r_symndx >= symtab_hdr->sh_info) - r_symndx = STN_UNDEF; - rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; - if (r_symndx != STN_UNDEF) - rel->r_addend -= (local_syms[r_symndx].st_value - + sec->output_offset - + sec->output_section->vma); - + rel->r_offset = offset + d_offset; + r_symndx = STN_UNDEF; r_type = R_PPC64_TPREL16_LO; rel->r_info = ELF64_R_INFO (r_symndx, r_type); - rel->r_offset = offset + d_offset; + rel->r_addend = htab->elf.tls_sec->vma + DTP_OFFSET; + /* Zap the reloc on the _tls_get_addr call too. */ BFD_ASSERT (offset == rel[1].r_offset); rel[1].r_info = ELF64_R_INFO (STN_UNDEF, R_PPC64_NONE); -- 2.39.5