From 0c4bd9d97731e2cdff46efa7e7325e4716641a59 Mon Sep 17 00:00:00 2001 From: Kuan-Lin Chen Date: Mon, 2 Feb 2015 13:42:51 +0800 Subject: [PATCH] NDS32/bfd: Add one more argument to control contents cache. The hook bfd_elf32_bfd_get_relocated_section_contents frees contents in gdb, and it make contents pointer mismatched. --- bfd/ChangeLog | 5 +++++ bfd/elf32-nds32.c | 67 ++++++++++++++++++++++++++++++++++--------------------- 2 files changed, 47 insertions(+), 25 deletions(-) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 464400f..5942e1c 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,8 @@ +2015-02-02 Kuan-Lin Chen + + * elf32-nds32.c (nds32_get_section_contents): Add one more argument. + (nds32_elf_relocate_section): Do not relocate R_NDS32_LONGJUMP7. + 2015-01-29 Alan Modra * elf64-ppc.c (ppc64_elf_relocate_section): Correct GOT_TLSLD diff --git a/bfd/elf32-nds32.c b/bfd/elf32-nds32.c index e5fc2a6..081b997 100644 --- a/bfd/elf32-nds32.c +++ b/bfd/elf32-nds32.c @@ -108,10 +108,11 @@ static Elf_Internal_Rela *find_relocs_at_address (Elf_Internal_Rela *, Elf_Internal_Rela *, Elf_Internal_Rela *, enum elf_nds32_reloc_type); static bfd_vma calculate_memory_address - (bfd *, Elf_Internal_Rela *, Elf_Internal_Sym *, Elf_Internal_Shdr *); -static int nds32_get_section_contents (bfd *, asection *, bfd_byte **); +(bfd *, Elf_Internal_Rela *, Elf_Internal_Sym *, Elf_Internal_Shdr *); +static int nds32_get_section_contents (bfd *, asection *, + bfd_byte **, bfd_boolean); static bfd_boolean nds32_elf_ex9_build_hash_table - (bfd *, asection *, struct bfd_link_info *); +(bfd *, asection *, struct bfd_link_info *); static bfd_boolean nds32_elf_ex9_itb_base (struct bfd_link_info *); static void nds32_elf_ex9_import_table (struct bfd_link_info *); static void nds32_elf_ex9_finish (struct bfd_link_info *); @@ -4512,6 +4513,17 @@ nds32_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED, return FALSE; } + if (is_ITB_BASE_set == 0) + { + /* Set the _ITB_BASE_. */ + if (!nds32_elf_ex9_itb_base (info)) + { + (*_bfd_error_handler) (_("%B: error: Cannot set _ITB_BASE_"), + output_bfd); + bfd_set_error (bfd_error_bad_value); + } + } + if (table->target_optimize & NDS32_RELAX_JUMP_IFC_ON) if (!nds32_elf_ifc_reloc ()) (*_bfd_error_handler) (_("error: IFC relocation error.")); @@ -4562,10 +4574,11 @@ nds32_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED, || (r_type >= R_NDS32_INSN16 && r_type <= R_NDS32_25_FIXED_RELA) || r_type == R_NDS32_DATA || r_type == R_NDS32_TRAN - || (r_type >= R_NDS32_LONGCALL4 && r_type <= R_NDS32_LONGJUMP6)) + || (r_type >= R_NDS32_LONGCALL4 && r_type <= R_NDS32_LONGJUMP7)) continue; - /* If we enter the fp-as-gp region. Resolve the address of best fp-base. */ + /* If we enter the fp-as-gp region. Resolve the address + of best fp-base. */ if (ELF32_R_TYPE (rel->r_info) == R_NDS32_RELAX_REGION_BEGIN && (rel->r_addend & R_NDS32_RELAX_REGION_OMIT_FP_FLAG)) { @@ -5946,7 +5959,7 @@ nds32_check_vec_size (bfd *ibfd) /* Get vec_size in file. */ unsigned int flag_t; - nds32_get_section_contents (ibfd, sec_t, &contents); + nds32_get_section_contents (ibfd, sec_t, &contents, TRUE); flag_t = bfd_get_32 (ibfd, contents); /* The value could only be 4 or 16. */ @@ -8140,7 +8153,7 @@ is_convert_32_to_16 (bfd *abfd, asection *sec, offset = reloc->r_offset; - if (!nds32_get_section_contents (abfd, sec, &contents)) + if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)) return FALSE; insn = bfd_getb32 (contents + offset); @@ -8653,7 +8666,7 @@ nds32_elf_relax_delete_blanks (bfd *abfd, asection *sec, if (!(sect->flags & SEC_RELOC)) continue; - nds32_get_section_contents (abfd, sect, &contents); + nds32_get_section_contents (abfd, sect, &contents, TRUE); for (irel = internal_relocs; irel < irelend; irel++) { @@ -8901,7 +8914,8 @@ done_adjust_diff: /* Get the contents of a section. */ static int -nds32_get_section_contents (bfd *abfd, asection *sec, bfd_byte **contents_p) +nds32_get_section_contents (bfd *abfd, asection *sec, + bfd_byte **contents_p, bfd_boolean cache) { /* Get the section contents. */ if (elf_section_data (sec)->this_hdr.contents != NULL) @@ -8910,7 +8924,8 @@ nds32_get_section_contents (bfd *abfd, asection *sec, bfd_byte **contents_p) { if (!bfd_malloc_and_get_section (abfd, sec, contents_p)) return FALSE; - elf_section_data (sec)->this_hdr.contents = *contents_p; + if (cache) + elf_section_data (sec)->this_hdr.contents = *contents_p; } return TRUE; @@ -12057,7 +12072,7 @@ nds32_elf_relax_section (bfd *abfd, asection *sec, load_store_relax = table->load_store_relax; /* Get symbol table and section content. */ - if (!nds32_get_section_contents (abfd, sec, &contents) + if (!nds32_get_section_contents (abfd, sec, &contents, TRUE) || !nds32_get_local_syms (abfd, sec, &isymbuf)) goto error_return; @@ -12743,7 +12758,7 @@ nds32_relax_fp_as_gp (struct bfd_link_info *link_info, symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - if (!nds32_get_section_contents (abfd, sec, &contents) + if (!nds32_get_section_contents (abfd, sec, &contents, TRUE) || !nds32_get_local_syms (abfd, sec, &isymbuf)) return FALSE; @@ -12880,7 +12895,7 @@ nds32_fag_remove_unused_fpbase (bfd *abfd, asection *sec, */ symtab_hdr = &elf_tdata (abfd)->symtab_hdr; - nds32_get_section_contents (abfd, sec, &contents); + nds32_get_section_contents (abfd, sec, &contents, TRUE); for (irel = internal_relocs; irel < irelend; irel++) { @@ -12982,7 +12997,7 @@ nds32_elf_get_relocated_section_contents (bfd *abfd, return NULL; /* Read in the section. */ - if (!nds32_get_section_contents (input_bfd, input_section, &data)) + if (!nds32_get_section_contents (input_bfd, input_section, &data, FALSE)) return NULL; if (reloc_size == 0) @@ -13233,7 +13248,7 @@ nds32_elf_ifc_calc (struct bfd_link_info *info, && !(irel->r_addend & R_NDS32_RELAX_ENTRY_IFC_FLAG))) return TRUE; - if (!nds32_get_section_contents (abfd, sec, &contents)) + if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)) return FALSE; table = nds32_elf_hash_table (info); @@ -13475,7 +13490,7 @@ nds32_elf_ifc_replace (struct bfd_link_info *info) irelend = internal_relocs + ptr->sec->reloc_count; if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec, - &contents)) + &contents, TRUE)) return FALSE; while (irel_ptr) @@ -13532,8 +13547,9 @@ nds32_elf_ifc_replace (struct bfd_link_info *info) (irel_ptr->sec->owner, irel_ptr->sec, NULL, NULL, TRUE /* keep_memory */); irelend = internal_relocs + irel_ptr->sec->reloc_count; - if (!nds32_get_section_contents - (irel_ptr->sec->owner, irel_ptr->sec, &contents)) + if (!nds32_get_section_contents (irel_ptr->sec->owner, + irel_ptr->sec, &contents, + TRUE)) return FALSE; irel = irel_ptr->irel; @@ -13619,7 +13635,8 @@ nds32_elf_ifc_reloc (void) if (ptr->h == NULL) { /* Local symbol. */ - if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec, &contents)) + if (!nds32_get_section_contents (ptr->sec->owner, ptr->sec, + &contents, TRUE)) return FALSE; while (irel_ptr) @@ -13717,7 +13734,7 @@ nds32_elf_ifc_reloc (void) return FALSE; } if (!nds32_get_section_contents - (irel_ptr->sec->owner, irel_ptr->sec, &contents)) + (irel_ptr->sec->owner, irel_ptr->sec, &contents, TRUE)) return FALSE; insn16 = INSN_IFCALL9 | (relocation >> 1); bfd_putb16 (insn16, contents + irel_ptr->irel->r_offset); @@ -14172,7 +14189,7 @@ nds32_elf_ex9_build_itable (struct bfd_link_info *link_info) table_sec = bfd_get_section_by_name (it_abfd, ".ex9.itable"); if (table_sec != NULL) { - if (!nds32_get_section_contents (it_abfd, table_sec, &contents)) + if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE)) return; for (ptr = ex9_insn_head; ptr !=NULL ; ptr = ptr->next) @@ -14518,7 +14535,7 @@ nds32_elf_ex9_replace_instruction (struct bfd_link_info *info, bfd *abfd, asecti /* Load section instructions, relocations, and symbol table. */ - if (!nds32_get_section_contents (abfd, sec, &contents) + if (!nds32_get_section_contents (abfd, sec, &contents, TRUE) || !nds32_get_local_syms (abfd, sec, &isym)) return FALSE; internal_relocs = @@ -15110,7 +15127,7 @@ nds32_elf_ex9_reloc_jmp (struct bfd_link_info *link_info) if (table_sec->size == 0) return; - if (!nds32_get_section_contents (it_abfd, table_sec, &contents)) + if (!nds32_get_section_contents (it_abfd, table_sec, &contents, TRUE)) return; } } @@ -15249,7 +15266,7 @@ nds32_elf_ex9_reloc_jmp (struct bfd_link_info *link_info) { if (!nds32_get_section_contents (fix_ptr->sec->owner, fix_ptr->sec, - &source_contents)) + &source_contents, TRUE)) (*_bfd_error_handler) (_("Linker: error cannot fixed ex9 relocation \n")); if (temp_ptr->order < 32) @@ -15331,7 +15348,7 @@ nds32_elf_ex9_build_hash_table (bfd *abfd, asection *sec, sym_hashes = elf_sym_hashes (abfd); /* Load section instructions, relocations, and symbol table. */ - if (!nds32_get_section_contents (abfd, sec, &contents)) + if (!nds32_get_section_contents (abfd, sec, &contents, TRUE)) return FALSE; internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL, -- 2.7.4