| /* Intel 960 specific support for 32-bit ELF |
| Copyright (C) 1999-2017 Free Software Foundation, Inc. |
| |
| This file is part of BFD, the Binary File Descriptor library. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 3 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| MA 02110-1301, USA. */ |
| |
| #include "sysdep.h" |
| #include "bfd.h" |
| #include "libbfd.h" |
| #include "elf-bfd.h" |
| #include "elf/i960.h" |
| |
| #define USE_REL 1 |
| |
| #define bfd_elf32_bfd_reloc_type_lookup elf32_i960_reloc_type_lookup |
| #define bfd_elf32_bfd_reloc_name_lookup \ |
| elf32_i960_reloc_name_lookup |
| #define elf_info_to_howto elf32_i960_info_to_howto |
| #define elf_info_to_howto_rel elf32_i960_info_to_howto_rel |
| |
| /* ELF relocs are against symbols. If we are producing relocatable |
| output, and the reloc is against an external symbol, and nothing |
| has given us any additional addend, the resulting reloc will also |
| be against the same symbol. In such a case, we don't want to |
| change anything about the way the reloc is handled, since it will |
| all be done at final link time. Rather than put special case code |
| into bfd_perform_relocation, all the reloc types use this howto |
| function. It just short circuits the reloc if producing |
| relocatable output against an external symbol. */ |
| |
| static bfd_reloc_status_type |
| elf32_i960_relocate (bfd *abfd ATTRIBUTE_UNUSED, |
| arelent *reloc_entry, |
| asymbol *symbol, |
| void * data ATTRIBUTE_UNUSED, |
| asection *input_section, |
| bfd *output_bfd, |
| char **error_message ATTRIBUTE_UNUSED) |
| { |
| /* HACK: I think this first condition is necessary when producing |
| relocatable output. After the end of HACK, the code is identical |
| to bfd_elf_generic_reloc(). I would _guess_ the first change |
| belongs there rather than here. martindo 1998-10-23. */ |
| if (output_bfd != (bfd *) NULL |
| && reloc_entry->howto->pc_relative |
| && !reloc_entry->howto->pcrel_offset) |
| reloc_entry->addend -= symbol->value; |
| |
| /* This is more dubious. */ |
| else if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) != 0) |
| reloc_entry->addend -= symbol->section->output_section->vma; |
| |
| else |
| { |
| /* ...end of HACK. */ |
| if (output_bfd != (bfd *) NULL |
| && (symbol->flags & BSF_SECTION_SYM) == 0 |
| && (! reloc_entry->howto->partial_inplace |
| || reloc_entry->addend == 0)) |
| { |
| reloc_entry->address += input_section->output_offset; |
| return bfd_reloc_ok; |
| } |
| } |
| |
| return bfd_reloc_continue; |
| } |
| |
| static reloc_howto_type elf_howto_table[]= |
| { |
| HOWTO (R_960_NONE, 0, 3, 0, FALSE, 0, complain_overflow_dont, |
| elf32_i960_relocate, "R_960_NONE", TRUE, |
| 0x00000000, 0x00000000, FALSE), |
| EMPTY_HOWTO (1), |
| HOWTO (R_960_32, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, |
| elf32_i960_relocate, "R_960_32", TRUE, |
| 0xffffffff, 0xffffffff, FALSE), |
| HOWTO (R_960_IP24, 0, 2, 24, TRUE, 0, complain_overflow_signed, |
| elf32_i960_relocate, "R_960_IP24 ", TRUE, |
| 0x00ffffff, 0x00ffffff, FALSE), |
| EMPTY_HOWTO (4), |
| EMPTY_HOWTO (5), |
| EMPTY_HOWTO (6), |
| EMPTY_HOWTO (7) |
| }; |
| |
| static enum elf_i960_reloc_type |
| elf32_i960_bfd_to_reloc_type (bfd_reloc_code_real_type code) |
| { |
| switch (code) |
| { |
| default: |
| return R_960_NONE; |
| case BFD_RELOC_I960_CALLJ: |
| return R_960_OPTCALL; |
| case BFD_RELOC_32: |
| case BFD_RELOC_CTOR: |
| return R_960_32; |
| case BFD_RELOC_24_PCREL: |
| return R_960_IP24; |
| } |
| } |
| |
| static void |
| elf32_i960_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, |
| arelent * cache_ptr ATTRIBUTE_UNUSED, |
| Elf_Internal_Rela * dst ATTRIBUTE_UNUSED) |
| { |
| abort (); |
| } |
| |
| static void |
| elf32_i960_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, |
| arelent *cache_ptr, |
| Elf_Internal_Rela *dst) |
| { |
| enum elf_i960_reloc_type type; |
| |
| type = (enum elf_i960_reloc_type) ELF32_R_TYPE (dst->r_info); |
| |
| /* PR 17521: file: 9609b8d6. */ |
| if (type >= R_960_max) |
| { |
| /* xgettext:c-format */ |
| _bfd_error_handler (_("%B: invalid i960 reloc number: %d"), abfd, type); |
| type = 0; |
| } |
| |
| cache_ptr->howto = &elf_howto_table[(int) type]; |
| } |
| |
| static reloc_howto_type * |
| elf32_i960_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| bfd_reloc_code_real_type code) |
| { |
| return elf_howto_table + elf32_i960_bfd_to_reloc_type (code); |
| } |
| |
| static reloc_howto_type * |
| elf32_i960_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| const char *r_name) |
| { |
| unsigned int i; |
| |
| for (i = 0; i < sizeof (elf_howto_table) / sizeof (elf_howto_table[0]); i++) |
| if (elf_howto_table[i].name != NULL |
| && strcasecmp (elf_howto_table[i].name, r_name) == 0) |
| return &elf_howto_table[i]; |
| |
| return NULL; |
| } |
| |
| #define TARGET_LITTLE_SYM i960_elf32_vec |
| #define TARGET_LITTLE_NAME "elf32-i960" |
| #define ELF_ARCH bfd_arch_i960 |
| #define ELF_MACHINE_CODE EM_960 |
| #define ELF_MAXPAGESIZE 1 /* FIXME: This number is wrong, It should be the page size in bytes. */ |
| |
| #include "elf32-target.h" |