X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;f=bfd%2Felf32-crx.c;h=82f1a3e469033206e943c832bc441ef70b47c81b;hb=refs%2Fheads%2Fconcurrent-displaced-stepping-2020-04-01;hp=b0db783b17af4e102b313f7fb32e784e67e1b5e0;hpb=cd123cb70c845b890eed231a84e6e84c92c2ef92;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-crx.c b/bfd/elf32-crx.c index b0db783b17..82f1a3e469 100644 --- a/bfd/elf32-crx.c +++ b/bfd/elf32-crx.c @@ -1,5 +1,5 @@ /* BFD back-end for National Semiconductor's CRX ELF - Copyright 2004, 2005, 2006, 2007 Free Software Foundation, Inc. + Copyright (C) 2004-2020 Free Software Foundation, Inc. Written by Tomer Levi, NSC, Israel. This file is part of BFD, the Binary File Descriptor library. @@ -28,7 +28,7 @@ static reloc_howto_type *elf_crx_reloc_type_lookup (bfd *, bfd_reloc_code_real_type); -static void elf_crx_info_to_howto +static bfd_boolean elf_crx_info_to_howto (bfd *, arelent *, Elf_Internal_Rela *); static bfd_boolean elf32_crx_relax_delete_bytes (struct bfd_link_info *, bfd *, asection *, bfd_vma, int); @@ -82,8 +82,8 @@ static reloc_howto_type crx_elf_howto_table[] = { HOWTO (R_CRX_NONE, /* type */ 0, /* rightshift */ - 2, /* size */ - 32, /* bitsize */ + 3, /* size */ + 0, /* bitsize */ FALSE, /* pc_relative */ 0, /* bitpos */ complain_overflow_dont,/* complain_on_overflow */ @@ -104,7 +104,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_REL4", /* name */ FALSE, /* partial_inplace */ - 0xf, /* src_mask */ + 0x0, /* src_mask */ 0xf, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -118,7 +118,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_REL8", /* name */ FALSE, /* partial_inplace */ - 0xff, /* src_mask */ + 0x0, /* src_mask */ 0xff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -132,7 +132,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_REL8_CMP", /* name */ FALSE, /* partial_inplace */ - 0xff, /* src_mask */ + 0x0, /* src_mask */ 0xff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -146,7 +146,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_REL16", /* name */ FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ + 0x0, /* src_mask */ 0xffff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -160,7 +160,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_REL24", /* name */ FALSE, /* partial_inplace */ - 0xffffff, /* src_mask */ + 0x0, /* src_mask */ 0xffffff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -174,7 +174,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_REL32", /* name */ FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ + 0x0, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -188,7 +188,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_REGREL12", /* name */ FALSE, /* partial_inplace */ - 0xfff, /* src_mask */ + 0x0, /* src_mask */ 0xfff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -202,7 +202,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_REGREL22", /* name */ FALSE, /* partial_inplace */ - 0x3fffff, /* src_mask */ + 0x0, /* src_mask */ 0x3fffff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -216,7 +216,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_REGREL28", /* name */ FALSE, /* partial_inplace */ - 0xfffffff, /* src_mask */ + 0x0, /* src_mask */ 0xfffffff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -230,7 +230,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_REGREL32", /* name */ FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ + 0x0, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -244,7 +244,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_ABS16", /* name */ FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ + 0x0, /* src_mask */ 0xffff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -258,7 +258,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_ABS32", /* name */ FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ + 0x0, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -272,7 +272,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_NUM8", /* name */ FALSE, /* partial_inplace */ - 0xff, /* src_mask */ + 0x0, /* src_mask */ 0xff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -286,7 +286,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_NUM16", /* name */ FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ + 0x0, /* src_mask */ 0xffff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -300,7 +300,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_NUM32", /* name */ FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ + 0x0, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -314,7 +314,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_IMM16", /* name */ FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ + 0x0, /* src_mask */ 0xffff, /* dst_mask */ FALSE), /* pcrel_offset */ @@ -328,10 +328,10 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_IMM32", /* name */ FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ + 0x0, /* src_mask */ 0xffffffff, /* dst_mask */ FALSE), /* pcrel_offset */ - + /* An 8 bit switch table entry. This is generated for an expression such as ``.byte L1 - L2''. The offset holds the difference between the reloc address and L2. */ @@ -345,7 +345,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_SWITCH8", /* name */ FALSE, /* partial_inplace */ - 0xff, /* src_mask */ + 0x0, /* src_mask */ 0xff, /* dst_mask */ TRUE), /* pcrel_offset */ @@ -362,7 +362,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_SWITCH16", /* name */ FALSE, /* partial_inplace */ - 0xffff, /* src_mask */ + 0x0, /* src_mask */ 0xffff, /* dst_mask */ TRUE), /* pcrel_offset */ @@ -379,7 +379,7 @@ static reloc_howto_type crx_elf_howto_table[] = bfd_elf_generic_reloc, /* special_function */ "R_CRX_SWITCH32", /* name */ FALSE, /* partial_inplace */ - 0xffffffff, /* src_mask */ + 0x0, /* src_mask */ 0xffffffff, /* dst_mask */ TRUE) /* pcrel_offset */ }; @@ -418,13 +418,21 @@ elf_crx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, /* Retrieve a howto ptr using an internal relocation entry. */ -static void -elf_crx_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr, +static bfd_boolean +elf_crx_info_to_howto (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst) { unsigned int r_type = ELF32_R_TYPE (dst->r_info); - BFD_ASSERT (r_type < (unsigned int) R_CRX_MAX); + if (r_type >= R_CRX_MAX) + { + /* xgettext:c-format */ + _bfd_error_handler (_("%pB: unsupported relocation type %#x"), + abfd, r_type); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } cache_ptr->howto = &crx_elf_howto_table[r_type]; + return TRUE; } /* Perform a relocation as part of a final link. */ @@ -474,10 +482,10 @@ crx_elf_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd, case R_CRX_SWITCH8: case R_CRX_SWITCH16: case R_CRX_SWITCH32: - /* We only care about the addend, where the difference between + /* We only care about the addend, where the difference between expressions is kept. */ Rvalue = 0; - + default: break; } @@ -584,14 +592,13 @@ crx_elf_final_link_relocate (reloc_howto_type *howto, bfd *input_bfd, /* Delete some bytes from a section while relaxing. */ static bfd_boolean -elf32_crx_relax_delete_bytes (struct bfd_link_info *link_info, bfd *abfd, +elf32_crx_relax_delete_bytes (struct bfd_link_info *link_info, bfd *abfd, asection *sec, bfd_vma addr, int count) { Elf_Internal_Shdr *symtab_hdr; unsigned int sec_shndx; bfd_byte *contents; Elf_Internal_Rela *irel, *irelend; - Elf_Internal_Rela *irelalign; bfd_vma toaddr; Elf_Internal_Sym *isym; Elf_Internal_Sym *isymend; @@ -604,10 +611,6 @@ elf32_crx_relax_delete_bytes (struct bfd_link_info *link_info, bfd *abfd, contents = elf_section_data (sec)->this_hdr.contents; - /* The deletion must stop at the next ALIGN reloc for an aligment - power larger than the number of bytes we are deleting. */ - - irelalign = NULL; toaddr = sec->size; irel = elf_section_data (sec)->relocs; @@ -636,7 +639,7 @@ elf32_crx_relax_delete_bytes (struct bfd_link_info *link_info, bfd *abfd, && isym->st_value > addr && isym->st_value < toaddr) { - /* Adjust the addend of SWITCH relocations in this section, + /* Adjust the addend of SWITCH relocations in this section, which reference this local symbol. */ for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++) { @@ -681,22 +684,22 @@ elf32_crx_relax_delete_bytes (struct bfd_link_info *link_info, bfd *abfd, { struct elf_link_hash_entry *sym_hash = *sym_hashes; - /* The '--wrap SYMBOL' option is causing a pain when the object file, - containing the definition of __wrap_SYMBOL, includes a direct - call to SYMBOL as well. Since both __wrap_SYMBOL and SYMBOL reference - the same symbol (which is __wrap_SYMBOL), but still exist as two - different symbols in 'sym_hashes', we don't want to adjust - the global symbol __wrap_SYMBOL twice. + /* The '--wrap SYMBOL' option is causing a pain when the object file, + containing the definition of __wrap_SYMBOL, includes a direct + call to SYMBOL as well. Since both __wrap_SYMBOL and SYMBOL reference + the same symbol (which is __wrap_SYMBOL), but still exist as two + different symbols in 'sym_hashes', we don't want to adjust + the global symbol __wrap_SYMBOL twice. This check is only relevant when symbols are being wrapped. */ if (link_info->wrap_hash != NULL) { struct elf_link_hash_entry **cur_sym_hashes; - + /* Loop only over the symbols whom been already checked. */ - for (cur_sym_hashes = start_hashes; cur_sym_hashes < sym_hashes; + for (cur_sym_hashes = start_hashes; cur_sym_hashes < sym_hashes; cur_sym_hashes++) { - /* If the current symbol is identical to 'sym_hash', that means + /* If the current symbol is identical to 'sym_hash', that means the symbol was already adjusted (or at least checked). */ if (*cur_sym_hashes == sym_hash) break; @@ -758,7 +761,7 @@ elf32_crx_get_relocated_section_contents (bfd *output_bfd, bfd_size_type amt; internal_relocs = (_bfd_elf_link_read_relocs - (input_bfd, input_section, (PTR) NULL, + (input_bfd, input_section, NULL, (Elf_Internal_Rela *) NULL, FALSE)); if (internal_relocs == NULL) goto error_return; @@ -802,10 +805,8 @@ elf32_crx_get_relocated_section_contents (bfd *output_bfd, isymbuf, sections)) goto error_return; - if (sections != NULL) - free (sections); - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) + free (sections); + if (symtab_hdr->contents != (unsigned char *) isymbuf) free (isymbuf); if (elf_section_data (input_section)->relocs != internal_relocs) free (internal_relocs); @@ -814,13 +815,10 @@ elf32_crx_get_relocated_section_contents (bfd *output_bfd, return data; error_return: - if (sections != NULL) - free (sections); - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) + free (sections); + if (symtab_hdr->contents != (unsigned char *) isymbuf) free (isymbuf); - if (internal_relocs != NULL - && elf_section_data (input_section)->relocs != internal_relocs) + if (elf_section_data (input_section)->relocs != internal_relocs) free (internal_relocs); return NULL; } @@ -869,26 +867,19 @@ elf32_crx_relocate_section (bfd *output_bfd, struct bfd_link_info *info, } else { - bfd_boolean unresolved_reloc, warned; + bfd_boolean unresolved_reloc, warned, ignored; RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, r_symndx, symtab_hdr, sym_hashes, h, sec, relocation, - unresolved_reloc, warned); + unresolved_reloc, warned, ignored); } - if (sec != NULL && elf_discarded_section (sec)) - { - /* For relocs against symbols from removed linkonce sections, - or sections discarded by a linker script, we just want the - section contents zeroed. Avoid any special processing. */ - _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); - rel->r_info = 0; - rel->r_addend = 0; - continue; - } + if (sec != NULL && discarded_section (sec)) + RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, + rel, 1, relend, howto, 0, contents); - if (info->relocatable) + if (bfd_link_relocatable (info)) continue; r = crx_elf_final_link_relocate (howto, input_bfd, output_bfd, @@ -909,24 +900,20 @@ elf32_crx_relocate_section (bfd *output_bfd, struct bfd_link_info *info, name = (bfd_elf_string_from_elf_section (input_bfd, symtab_hdr->sh_link, sym->st_name)); if (name == NULL || *name == '\0') - name = bfd_section_name (input_bfd, sec); + name = bfd_section_name (sec); } switch (r) { case bfd_reloc_overflow: - if (!((*info->callbacks->reloc_overflow) - (info, (h ? &h->root : NULL), name, howto->name, - (bfd_vma) 0, input_bfd, input_section, - rel->r_offset))) - return FALSE; + (*info->callbacks->reloc_overflow) + (info, (h ? &h->root : NULL), name, howto->name, + (bfd_vma) 0, input_bfd, input_section, rel->r_offset); break; case bfd_reloc_undefined: - if (!((*info->callbacks->undefined_symbol) - (info, name, input_bfd, input_section, - rel->r_offset, TRUE))) - return FALSE; + (*info->callbacks->undefined_symbol) + (info, name, input_bfd, input_section, rel->r_offset, TRUE); break; case bfd_reloc_outofrange: @@ -946,10 +933,8 @@ elf32_crx_relocate_section (bfd *output_bfd, struct bfd_link_info *info, /* Fall through. */ common_error: - if (!((*info->callbacks->warning) - (info, msg, name, input_bfd, input_section, - rel->r_offset))) - return FALSE; + (*info->callbacks->warning) (info, msg, name, input_bfd, + input_section, rel->r_offset); break; } } @@ -985,7 +970,7 @@ elf32_crx_relax_section (bfd *abfd, asection *sec, /* We don't have to do anything for a relocatable link, if this section does not have relocs, or if this is not a code section. */ - if (link_info->relocatable + if (bfd_link_relocatable (link_info) || (sec->flags & SEC_RELOC) == 0 || sec->reloc_count == 0 || (sec->flags & SEC_CODE) == 0) @@ -995,7 +980,7 @@ elf32_crx_relax_section (bfd *abfd, asection *sec, /* Get a copy of the native relocations. */ internal_relocs = (_bfd_elf_link_read_relocs - (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, + (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, link_info->keep_memory)); if (internal_relocs == NULL) goto error_return; @@ -1299,28 +1284,24 @@ elf32_crx_relax_section (bfd *abfd, asection *sec, } } - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) + if (elf_section_data (sec)->relocs != internal_relocs) free (internal_relocs); return TRUE; error_return: - if (isymbuf != NULL - && symtab_hdr->contents != (unsigned char *) isymbuf) + if (symtab_hdr->contents != (unsigned char *) isymbuf) free (isymbuf); - if (contents != NULL - && elf_section_data (sec)->this_hdr.contents != contents) + if (elf_section_data (sec)->this_hdr.contents != contents) free (contents); - if (internal_relocs != NULL - && elf_section_data (sec)->relocs != internal_relocs) + if (elf_section_data (sec)->relocs != internal_relocs) free (internal_relocs); return FALSE; } /* Definitions for setting CRX target vector. */ -#define TARGET_LITTLE_SYM bfd_elf32_crx_vec +#define TARGET_LITTLE_SYM crx_elf32_vec #define TARGET_LITTLE_NAME "elf32-crx" #define ELF_ARCH bfd_arch_crx #define ELF_MACHINE_CODE EM_CRX @@ -1331,7 +1312,7 @@ elf32_crx_relax_section (bfd *abfd, asection *sec, #define bfd_elf32_bfd_reloc_name_lookup \ elf_crx_reloc_name_lookup #define elf_info_to_howto elf_crx_info_to_howto -#define elf_info_to_howto_rel 0 +#define elf_info_to_howto_rel NULL #define elf_backend_relocate_section elf32_crx_relocate_section #define bfd_elf32_bfd_relax_section elf32_crx_relax_section #define bfd_elf32_bfd_get_relocated_section_contents \