* elf32-v850.c: Include bfdlink.h.
(bfd_elf32_v850_reloc): Return an error if we get a reloc
we can't handle.
(elf32_v850_bfd_final_link_relocate): New function.
(v850_elf_relocation_section): Likewise.
(elf_backend_relocate_section): Define.
New-style linker for the v850 (necessary to handle zda, sda & tda).
sda & tda relocs seem to be working. No tda reloc support yet.
This commit is contained in:
Jeff Law
parent
a638512f44
commit
725b96f599
2 changed files with 325 additions and 0 deletions
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@ -1,3 +1,14 @@
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start-sanitize-v850
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Tue Oct 22 19:20:38 1996 Jeffrey A Law (law@cygnus.com)
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* elf32-v850.c: Include bfdlink.h.
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(bfd_elf32_v850_reloc): Return an error if we get a reloc
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we can't handle.
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(elf32_v850_bfd_final_link_relocate): New function.
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(v850_elf_relocation_section): Likewise.
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(elf_backend_relocate_section): Define.
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end-sanitize-v850
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Tue Oct 22 17:22:43 1996 Ian Lance Taylor <ian@cygnus.com>
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* binary.c (binary_set_section_contents): Ignore sections which
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314
bfd/elf32-v850.c
314
bfd/elf32-v850.c
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@ -19,6 +19,7 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "bfdlink.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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@ -400,6 +401,8 @@ bfd_elf32_v850_reloc (abfd, reloc, symbol, data, isection, obfd, err)
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bfd_put_16 (abfd, relocation, (bfd_byte *)data + reloc->address);
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return bfd_reloc_ok;
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}
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else
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return bfd_reloc_notsupported;
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}
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return bfd_reloc_continue;
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@ -418,6 +421,315 @@ bfd_elf32_v850_is_local_label (abfd, symbol)
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&& symbol->name[3] == '_'));
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}
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/* Perform a relocation as part of a final link. */
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static bfd_reloc_status_type
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elf32_v850_bfd_final_link_relocate (howto, input_bfd, output_bfd,
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input_section, contents, offset, value,
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addend, info, sym_sec, is_local)
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reloc_howto_type *howto;
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bfd *input_bfd;
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bfd *output_bfd;
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asection *input_section;
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bfd_byte *contents;
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bfd_vma offset;
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bfd_vma value;
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bfd_vma addend;
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struct bfd_link_info *info;
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asection *sym_sec;
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int is_local;
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{
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unsigned long insn;
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unsigned long r_type = howto->type;
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unsigned long r_format = howto->bitsize;
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bfd_byte *hit_data = contents + offset;
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boolean r_pcrel = howto->pc_relative;
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switch (r_type)
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{
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case R_V850_9_PCREL:
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value -= (input_section->output_section->vma
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+ input_section->output_offset);
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value -= offset;
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if ((long)value > 0xff || (long)value < -0x100)
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return bfd_reloc_overflow;
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if ((value % 2) != 0)
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return bfd_reloc_dangerous;
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insn = bfd_get_16 (input_bfd, hit_data);
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insn &= 0xf870;
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insn |= ((value & 0x1f0) << 7) | ((value & 0x0e) << 3);
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bfd_put_16 (input_bfd, insn, hit_data);
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return bfd_reloc_ok;
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case R_V850_22_PCREL:
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value -= (input_section->output_section->vma
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+ input_section->output_offset);
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value -= offset;
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if ((long)value > 0x1ffff || (long)value < -0x200000)
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return bfd_reloc_overflow;
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if ((value % 2) != 0)
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return bfd_reloc_dangerous;
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insn = bfd_get_32 (input_bfd, hit_data);
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insn &= ~0xfffe003f;
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insn |= (((value & 0xfffe) << 16) | ((value & 0x3f0000) >> 16));
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bfd_put_32 (input_bfd, insn, hit_data);
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return bfd_reloc_ok;
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case R_V850_HI16_S:
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value += bfd_get_16 (input_bfd, hit_data);
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value = (value >> 16) + ((value & 0x8000) != 0);
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if ((long)value > 0x7fff || (long)value < -0x8000)
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return bfd_reloc_overflow;
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bfd_put_16 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_V850_HI16:
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value += bfd_get_16 (input_bfd, hit_data);
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value >>= 16;
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if ((long)value > 0x7fff || (long)value < -0x8000)
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return bfd_reloc_overflow;
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bfd_put_16 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_V850_LO16:
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value += bfd_get_16 (input_bfd, hit_data);
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value &= 0xffff;
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bfd_put_16 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_V850_16:
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case R_V850_ZDA_OFFSET:
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value += bfd_get_16 (input_bfd, hit_data);
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if ((long)value > 0x7fff || (long)value < -0x8000)
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return bfd_reloc_overflow;
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bfd_put_16 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_V850_32:
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value += bfd_get_32 (input_bfd, hit_data);
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bfd_put_32 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_V850_8:
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value += bfd_get_8 (input_bfd, hit_data);
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if ((long)value > 0x7f || (long)value < -0x80)
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return bfd_reloc_overflow;
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bfd_put_8 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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case R_V850_SDA_OFFSET:
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{
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unsigned long gp;
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struct bfd_link_hash_entry *h;
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value += bfd_get_16 (input_bfd, hit_data);
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/* Get the value of __gp. */
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h = bfd_link_hash_lookup (info->hash, "__gp", false,
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false, true);
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if (h == (struct bfd_link_hash_entry *) NULL
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|| h->type != bfd_link_hash_defined)
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return bfd_reloc_undefined;
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gp = (h->u.def.value
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+ h->u.def.section->output_section->vma
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+ h->u.def.section->output_offset);
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value -= gp;
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if ((long)value > 0x7fff || (long)value < -0x8000)
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return bfd_reloc_overflow;
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bfd_put_16 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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}
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case R_V850_TDA_OFFSET:
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{
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unsigned long ep;
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struct bfd_link_hash_entry *h;
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value += bfd_get_16 (input_bfd, hit_data);
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/* Get the value of __ep. */
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h = bfd_link_hash_lookup (info->hash, "__ep", false,
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false, true);
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if (h == (struct bfd_link_hash_entry *) NULL
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|| h->type != bfd_link_hash_defined)
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return bfd_reloc_undefined;
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ep = (h->u.def.value
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+ h->u.def.section->output_section->vma
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+ h->u.def.section->output_offset);
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value -= ep;
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if ((long)value > 0x7fff || (long)value < -0x8000)
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return bfd_reloc_overflow;
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bfd_put_16 (input_bfd, value, hit_data);
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return bfd_reloc_ok;
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}
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case R_V850_NONE:
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default:
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break;
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}
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}
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/* Relocate an V850 ELF section. */
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static boolean
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v850_elf_relocate_section (output_bfd, info, input_bfd, input_section,
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contents, relocs, local_syms, local_sections)
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bfd *output_bfd;
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struct bfd_link_info *info;
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bfd *input_bfd;
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asection *input_section;
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bfd_byte *contents;
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Elf_Internal_Rela *relocs;
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Elf_Internal_Sym *local_syms;
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asection **local_sections;
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{
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Elf_Internal_Shdr *symtab_hdr;
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struct elf_link_hash_entry **sym_hashes;
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Elf_Internal_Rela *rel, *relend;
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symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
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sym_hashes = elf_sym_hashes (input_bfd);
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rel = relocs;
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relend = relocs + input_section->reloc_count;
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for (; rel < relend; rel++)
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{
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int r_type;
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reloc_howto_type *howto;
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unsigned long r_symndx;
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Elf_Internal_Sym *sym;
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asection *sec;
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struct elf_link_hash_entry *h;
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bfd_vma relocation;
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bfd_reloc_status_type r;
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if (info->relocateable)
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{
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/* This is a relocateable link. We don't have to change
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anything, unless the reloc is against a section symbol,
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in which case we have to adjust according to where the
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section symbol winds up in the output section. */
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if (r_symndx < symtab_hdr->sh_info)
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{
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sym = local_syms + r_symndx;
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if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
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{
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sec = local_sections[r_symndx];
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rel->r_addend += sec->output_offset + sym->st_value;
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}
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}
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continue;
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}
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r_type = ELF32_R_TYPE (rel->r_info);
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howto = elf_v850_howto_table + r_type;
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r_symndx = ELF32_R_SYM (rel->r_info);
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/* This is a final link. */
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h = NULL;
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sym = NULL;
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sec = NULL;
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if (r_symndx < symtab_hdr->sh_info)
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{
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sym = local_syms + r_symndx;
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sec = local_sections[r_symndx];
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relocation = (sec->output_section->vma
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+ sec->output_offset
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+ sym->st_value);
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}
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else
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{
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h = sym_hashes[r_symndx - symtab_hdr->sh_info];
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while (h->root.type == bfd_link_hash_indirect
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|| h->root.type == bfd_link_hash_warning)
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h = (struct elf_link_hash_entry *) h->root.u.i.link;
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if (h->root.type == bfd_link_hash_defined
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|| h->root.type == bfd_link_hash_defweak)
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{
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sec = h->root.u.def.section;
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relocation = (h->root.u.def.value
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+ sec->output_section->vma
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+ sec->output_offset);
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}
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else if (h->root.type == bfd_link_hash_undefweak)
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relocation = 0;
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else
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{
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if (! ((*info->callbacks->undefined_symbol)
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(info, h->root.root.string, input_bfd,
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input_section, rel->r_offset)))
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return false;
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relocation = 0;
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}
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}
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/* FIXME: We should use the addend, but the COFF relocations
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don't. */
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r = elf32_v850_bfd_final_link_relocate (howto, input_bfd, output_bfd,
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input_section,
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contents, rel->r_offset,
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relocation, rel->r_addend,
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info, sec, h == NULL);
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if (r != bfd_reloc_ok)
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{
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switch (r)
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{
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default:
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case bfd_reloc_outofrange:
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abort ();
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case bfd_reloc_overflow:
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{
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const char *name;
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if (h != NULL)
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name = h->root.root.string;
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else
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{
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name = (bfd_elf_string_from_elf_section
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(input_bfd, symtab_hdr->sh_link, sym->st_name));
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if (name == NULL)
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return false;
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if (*name == '\0')
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name = bfd_section_name (input_bfd, sec);
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}
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if (! ((*info->callbacks->reloc_overflow)
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(info, name, howto->name, (bfd_vma) 0,
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input_bfd, input_section, rel->r_offset)))
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return false;
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}
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break;
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}
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}
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}
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return true;
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}
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#define bfd_elf32_bfd_is_local_label bfd_elf32_v850_is_local_label
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#define TARGET_LITTLE_SYM bfd_elf32_v850_vec
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@ -428,6 +740,8 @@ bfd_elf32_v850_is_local_label (abfd, symbol)
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#define elf_info_to_howto 0
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#define elf_info_to_howto_rel v850_info_to_howto_rel
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#define elf_backend_relocate_section v850_elf_relocate_section
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#define elf_symbol_leading_char '_'
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