--- /dev/null
+/* Visium-specific support for 32-bit ELF.
+
+ Copyright (C) 2003-2014 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 "sysdep.h"
+#include "libbfd.h"
+#include "elf-bfd.h"
+#include "elf/visium.h"
+
+static bfd_reloc_status_type visium_elf_howto_parity_reloc
+ (bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **);
+
+static reloc_howto_type visium_elf_howto_table[] = {
+ /* This reloc does nothing. */
+ HOWTO (R_VISIUM_NONE, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_VISIUM_NONE", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 8 bit absolute relocation. */
+ HOWTO (R_VISIUM_8, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_VISIUM_8", /* name */
+ FALSE, /* partial_inplace */
+ 0x00, /* src_mask */
+ 0xff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 16 bit absolute relocation. */
+ HOWTO (R_VISIUM_16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_VISIUM_16", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 32 bit absolute relocation. */
+ HOWTO (R_VISIUM_32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_VISIUM_32", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+
+ /* A 8 bit PC relative relocation. */
+ HOWTO (R_VISIUM_8_PCREL, /* type */
+ 0, /* rightshift */
+ 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_VISIUM_8_PCREL", /* name */
+ FALSE, /* partial_inplace */
+ 0x00, /* src_mask */
+ 0xff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* A 16 bit PC relative relocation. */
+ HOWTO (R_VISIUM_16_PCREL, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_VISIUM_16_PCREL", /* name */
+ FALSE, /* partial inplace */
+ 0x0000, /* src_mask */
+ 0xffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* A 32-bit PC relative relocation. */
+ HOWTO (R_VISIUM_32_PCREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_VISIUM_32_PCREL", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* A 16-bit PC word relative offset, relative to start of instruction
+ and always in the second half of the instruction. */
+ HOWTO (R_VISIUM_PC16, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ visium_elf_howto_parity_reloc, /* special_function */
+ "R_VISIUM_PC16", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* The high 16 bits of symbol value. */
+ HOWTO (R_VISIUM_HI16, /* type */
+ 16, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ visium_elf_howto_parity_reloc, /* special_function */
+ "R_VISIUM_HI16", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* The low 16 bits of symbol value. */
+ HOWTO (R_VISIUM_LO16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ visium_elf_howto_parity_reloc, /* special_function */
+ "R_VISIUM_LO16", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 16 bit immediate value. */
+ HOWTO (R_VISIUM_IM16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ visium_elf_howto_parity_reloc, /* special_function */
+ "R_VISIUM_IM16", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000000, /* src_mask */
+ 0x000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* The high 16 bits of symbol value, pc relative. */
+ HOWTO (R_VISIUM_HI16_PCREL, /* type */
+ 16, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ visium_elf_howto_parity_reloc, /* special_function */
+ "R_VISIUM_HI16_PCREL", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* The low 16 bits of symbol value, pc relative. */
+ HOWTO (R_VISIUM_LO16_PCREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ visium_elf_howto_parity_reloc, /* special_function */
+ "R_VISIUM_LO16_PCREL", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* A 16 bit immediate value, pc relative. */
+ HOWTO (R_VISIUM_IM16_PCREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ visium_elf_howto_parity_reloc, /* special_function */
+ "R_VISIUM_IM16_PCREL", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000000, /* src_mask */
+ 0x000ffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+};
+
+/* GNU extension to record C++ vtable hierarchy. */
+static reloc_howto_type visium_elf_vtinherit_howto =
+ HOWTO (R_VISIUM_GNU_VTINHERIT, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ NULL, /* special_function */
+ "R_VISIUM_GNU_VTINHERIT", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE); /* pcrel_offset */
+
+/* GNU extension to record C++ vtable member usage. */
+static reloc_howto_type visium_elf_vtentry_howto =
+ HOWTO (R_VISIUM_GNU_VTENTRY, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ NULL, /* special_function */
+ "R_VISIUM_GNU_VTENTRY", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE); /* pcrel_offset */
+
+/* Map BFD reloc types to VISIUM ELF reloc types. */
+struct visium_reloc_map
+{
+ bfd_reloc_code_real_type bfd_reloc_val;
+ unsigned int visium_reloc_val;
+};
+
+static const struct visium_reloc_map visium_reloc_map[] = {
+ {BFD_RELOC_NONE, R_VISIUM_NONE},
+ {BFD_RELOC_8, R_VISIUM_8},
+ {BFD_RELOC_16, R_VISIUM_16},
+ {BFD_RELOC_32, R_VISIUM_32},
+ {BFD_RELOC_8_PCREL, R_VISIUM_8_PCREL},
+ {BFD_RELOC_16_PCREL, R_VISIUM_16_PCREL},
+ {BFD_RELOC_32_PCREL, R_VISIUM_32_PCREL},
+ {BFD_RELOC_VISIUM_REL16, R_VISIUM_PC16},
+ {BFD_RELOC_VISIUM_HI16, R_VISIUM_HI16},
+ {BFD_RELOC_VISIUM_LO16, R_VISIUM_LO16},
+ {BFD_RELOC_VISIUM_IM16, R_VISIUM_IM16},
+ {BFD_RELOC_VISIUM_HI16_PCREL, R_VISIUM_HI16_PCREL},
+ {BFD_RELOC_VISIUM_LO16_PCREL, R_VISIUM_LO16_PCREL},
+ {BFD_RELOC_VISIUM_IM16_PCREL, R_VISIUM_IM16_PCREL},
+ {BFD_RELOC_VTABLE_INHERIT, R_VISIUM_GNU_VTINHERIT},
+ {BFD_RELOC_VTABLE_ENTRY, R_VISIUM_GNU_VTENTRY},
+};
+
+/* Return the parity bit for INSN shifted to its final position. */
+
+static bfd_vma
+visium_parity_bit (bfd_vma insn)
+{
+ bfd_vma p = 0;
+ int i;
+
+ for (i = 0; i < 31; i++)
+ {
+ p ^= (insn & 1);
+ insn >>= 1;
+ }
+
+ return p << 31;
+}
+
+/* This "special function" will only be used when the input and
+ output files have different formats ie. when generating S-records
+ directly using "--oformat srec". Otherwise we use
+ _bfd_final_link_relocate which uses a howto structure, but does
+ not use the special_function field.
+
+ It sets instruction parity to even. This cannot be done by a howto. */
+
+static bfd_reloc_status_type
+visium_elf_howto_parity_reloc (bfd * input_bfd, arelent *reloc_entry,
+ asymbol *symbol, PTR data,
+ asection *input_section, bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ bfd_reloc_status_type ret;
+ bfd_vma relocation;
+ bfd_byte *inplace_address;
+ bfd_vma insn;
+ const bfd_vma signmask = 0xffff8000;
+
+ /* This part is from bfd_elf_generic_reloc.
+ If we're relocating, and this an external symbol, we don't want
+ to change anything. */
+ if (output_bfd != (bfd *) NULL && (symbol->flags & BSF_SECTION_SYM) == 0)
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ /* Now do the reloc in the usual way. */
+
+ /* Sanity check the address (offset in section). */
+ if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
+ return bfd_reloc_outofrange;
+
+ ret = bfd_reloc_ok;
+ if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
+ ret = bfd_reloc_undefined;
+
+ if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL)
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ /* Only do this for a final link. */
+ if (output_bfd == (bfd *) NULL)
+ {
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ }
+
+ relocation += reloc_entry->addend;
+ inplace_address = (bfd_byte *) data + reloc_entry->address;
+ insn = bfd_get_32 (input_bfd, inplace_address);
+
+ if (reloc_entry->howto->pc_relative)
+ {
+ relocation -= input_section->output_section->vma
+ + input_section->output_offset;
+ relocation -= reloc_entry->address;
+ }
+
+ switch (reloc_entry->howto->type)
+ {
+ case R_VISIUM_PC16:
+ relocation >>= 2;
+ if (ret == bfd_reloc_ok && (relocation & signmask) != 0
+ && (relocation & signmask) != signmask)
+ ret = bfd_reloc_overflow;
+ relocation &= 0xffff;
+ break;
+ case R_VISIUM_HI16:
+ case R_VISIUM_HI16_PCREL:
+ relocation = (relocation >> 16) & 0xffff;
+ break;
+ case R_VISIUM_LO16:
+ case R_VISIUM_LO16_PCREL:
+ relocation &= 0xffff;
+ break;
+ case R_VISIUM_IM16:
+ case R_VISIUM_IM16_PCREL:
+ if (ret == bfd_reloc_ok && (relocation & 0xffff0000) != 0)
+ ret = bfd_reloc_overflow;
+ relocation &= 0xffff;
+ break;
+ }
+ insn = (insn & 0x7fff0000) | relocation;
+ insn |= visium_parity_bit (insn);
+ bfd_put_32 (input_bfd, insn, inplace_address);
+
+ if (output_bfd != (bfd *) NULL)
+ reloc_entry->address += input_section->output_offset;
+
+ return ret;
+}
+
+static reloc_howto_type *
+visium_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
+{
+ /* Note that the visium_elf_howto_table is indexed by the R_
+ constants. Thus, the order that the howto records appear in the
+ table *must* match the order of the relocation types defined in
+ include/elf/visium.h. */
+ switch (code)
+ {
+ case BFD_RELOC_NONE:
+ return &visium_elf_howto_table[(int) R_VISIUM_NONE];
+ case BFD_RELOC_8:
+ return &visium_elf_howto_table[(int) R_VISIUM_8];
+ case BFD_RELOC_16:
+ return &visium_elf_howto_table[(int) R_VISIUM_16];
+ case BFD_RELOC_32:
+ return &visium_elf_howto_table[(int) R_VISIUM_32];
+ case BFD_RELOC_8_PCREL:
+ return &visium_elf_howto_table[(int) R_VISIUM_8_PCREL];
+ case BFD_RELOC_16_PCREL:
+ return &visium_elf_howto_table[(int) R_VISIUM_16_PCREL];
+ case BFD_RELOC_32_PCREL:
+ return &visium_elf_howto_table[(int) R_VISIUM_32_PCREL];
+ case BFD_RELOC_VISIUM_REL16:
+ return &visium_elf_howto_table[(int) R_VISIUM_PC16];
+ case BFD_RELOC_VISIUM_HI16:
+ return &visium_elf_howto_table[(int) R_VISIUM_HI16];
+ case BFD_RELOC_VISIUM_LO16:
+ return &visium_elf_howto_table[(int) R_VISIUM_LO16];
+ case BFD_RELOC_VISIUM_IM16:
+ return &visium_elf_howto_table[(int) R_VISIUM_IM16];
+ case BFD_RELOC_VISIUM_HI16_PCREL:
+ return &visium_elf_howto_table[(int) R_VISIUM_HI16_PCREL];
+ case BFD_RELOC_VISIUM_LO16_PCREL:
+ return &visium_elf_howto_table[(int) R_VISIUM_LO16_PCREL];
+ case BFD_RELOC_VISIUM_IM16_PCREL:
+ return &visium_elf_howto_table[(int) R_VISIUM_IM16_PCREL];
+ case BFD_RELOC_VTABLE_INHERIT:
+ return &visium_elf_vtinherit_howto;
+ case BFD_RELOC_VTABLE_ENTRY:
+ return &visium_elf_vtentry_howto;
+ default:
+ return NULL;
+ }
+}
+
+static reloc_howto_type *
+visium_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < (sizeof (visium_elf_howto_table)
+ / sizeof (visium_elf_howto_table[0])); i++)
+ if (visium_elf_howto_table[i].name != NULL
+ && strcasecmp (visium_elf_howto_table[i].name, r_name) == 0)
+ return &visium_elf_howto_table[i];
+
+ if (strcasecmp (visium_elf_vtinherit_howto.name, r_name) == 0)
+ return &visium_elf_vtinherit_howto;
+ if (strcasecmp (visium_elf_vtentry_howto.name, r_name) == 0)
+ return &visium_elf_vtentry_howto;
+
+ return NULL;
+}
+
+/* Set the howto pointer for a VISIUM ELF reloc. */
+
+static void
+visium_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
+ Elf_Internal_Rela *dst)
+{
+ unsigned int r_type = ELF32_R_TYPE (dst->r_info);
+
+ switch (r_type)
+ {
+ case R_VISIUM_GNU_VTINHERIT:
+ cache_ptr->howto = &visium_elf_vtinherit_howto;
+ break;
+
+ case R_VISIUM_GNU_VTENTRY:
+ cache_ptr->howto = &visium_elf_vtentry_howto;
+ break;
+
+ default:
+ cache_ptr->howto = &visium_elf_howto_table[r_type];
+ break;
+ }
+}
+
+/* Look through the relocs for a section during the first phase.
+ Since we don't do .gots or .plts, we just need to consider the
+ virtual table relocs for gc. */
+
+static bfd_boolean
+visium_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
+ asection *sec, const Elf_Internal_Rela *relocs)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ const Elf_Internal_Rela *rel;
+ const Elf_Internal_Rela *rel_end;
+
+ if (info->relocatable)
+ return TRUE;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+
+ rel_end = relocs + sec->reloc_count;
+ for (rel = relocs; rel < rel_end; rel++)
+ {
+ struct elf_link_hash_entry *h;
+ unsigned long r_symndx;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_symndx < symtab_hdr->sh_info)
+ h = NULL;
+ else
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ }
+
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ /* This relocation describes the C++ object vtable hierarchy.
+ Reconstruct it for later use during GC. */
+ case R_VISIUM_GNU_VTINHERIT:
+ if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
+ return FALSE;
+ break;
+
+ /* This relocation describes which C++ vtable entries are actually
+ used. Record for later use during GC. */
+ case R_VISIUM_GNU_VTENTRY:
+ if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ return FALSE;
+ break;
+ }
+ }
+
+ return TRUE;
+}
+
+/* Relocate a VISIUM ELF section. */
+
+static bfd_boolean
+visium_elf_relocate_section (bfd *output_bfd,
+ struct bfd_link_info *info, bfd *input_bfd,
+ asection *input_section, bfd_byte *contents,
+ Elf_Internal_Rela *relocs,
+ Elf_Internal_Sym *local_syms,
+ asection **local_sections)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *relend;
+
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (input_bfd);
+ relend = relocs + input_section->reloc_count;
+
+ for (rel = relocs; rel < relend; rel++)
+ {
+ reloc_howto_type *howto;
+ unsigned long r_symndx;
+ Elf_Internal_Sym *sym;
+ asection *sec;
+ struct elf_link_hash_entry *h;
+ bfd_vma relocation;
+ bfd_reloc_status_type r;
+ const char *name = NULL;
+ int r_type;
+ bfd_vma insn;
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+
+ if (r_type == R_VISIUM_GNU_VTINHERIT || r_type == R_VISIUM_GNU_VTENTRY)
+ continue;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ howto = visium_elf_howto_table + ELF32_R_TYPE (rel->r_info);
+ h = NULL;
+ sym = NULL;
+ sec = NULL;
+
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ /* This is a local symbol. */
+ sym = local_syms + r_symndx;
+ sec = local_sections[r_symndx];
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
+
+ name = bfd_elf_string_from_elf_section
+ (input_bfd, symtab_hdr->sh_link, sym->st_name);
+ name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
+ }
+ else
+ {
+ bfd_boolean unresolved_reloc;
+ bfd_boolean warned, ignored;
+
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned, ignored);
+
+ name = h->root.root.string;
+ }
+
+ if (sec != NULL && 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, input_section,
+ contents + rel->r_offset);
+
+ rel->r_info = 0;
+ rel->r_addend = 0;
+ continue;
+ }
+
+ if (info->relocatable)
+ continue;
+
+ switch (r_type)
+ {
+ case R_VISIUM_PC16:
+ case R_VISIUM_HI16:
+ case R_VISIUM_LO16:
+ case R_VISIUM_IM16:
+ case R_VISIUM_HI16_PCREL:
+ case R_VISIUM_LO16_PCREL:
+ case R_VISIUM_IM16_PCREL:
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, rel->r_addend);
+
+ /* For instruction relocations, the parity needs correcting. */
+ if (r == bfd_reloc_ok)
+ {
+ insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ insn = (insn & 0x7fffffff) | visium_parity_bit (insn);
+ bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
+ }
+ break;
+
+ default:
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, rel->r_addend);
+ break;
+ }
+
+ if (r != bfd_reloc_ok)
+ {
+ const char *msg = (const char *) NULL;
+
+ switch (r)
+ {
+ case bfd_reloc_overflow:
+ r = 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:
+ r = info->callbacks->undefined_symbol
+ (info, name, input_bfd, input_section, rel->r_offset, TRUE);
+ break;
+
+ case bfd_reloc_outofrange:
+ msg = _("internal error: out of range error");
+ break;
+
+ case bfd_reloc_notsupported:
+ msg = _("internal error: unsupported relocation error");
+ break;
+
+ case bfd_reloc_dangerous:
+ msg = _("internal error: dangerous relocation");
+ break;
+
+ default:
+ msg = _("internal error: unknown error");
+ break;
+ }
+
+ if (msg)
+ r = info->callbacks->warning
+ (info, msg, name, input_bfd, input_section, rel->r_offset);
+
+ if (!r)
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+
+/* This function is called during section gc to discover the section a
+ to which a particular relocation refers. Return the section that
+ should be marked against GC for a given relocation. */
+
+static asection *
+visium_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info,
+ Elf_Internal_Rela *rel, struct elf_link_hash_entry *h,
+ Elf_Internal_Sym *sym)
+{
+ if (h != NULL)
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_VISIUM_GNU_VTINHERIT:
+ case R_VISIUM_GNU_VTENTRY:
+ return NULL;
+ }
+
+ return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
+}
+
+static void
+visium_elf_post_process_headers (bfd *abfd,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
+{
+ Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
+ i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_STANDALONE;
+ i_ehdrp->e_ident[EI_ABIVERSION] = 1;
+}
+
+/* Function to set the ELF flag bits. */
+
+static bfd_boolean
+visium_elf_set_private_flags (bfd *abfd, flagword flags)
+{
+ elf_elfheader (abfd)->e_flags = flags;
+ elf_flags_init (abfd) = TRUE;
+ return TRUE;
+}
+
+/* Copy backend specific data from one object module to another. */
+
+static bfd_boolean
+visium_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd)
+{
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return TRUE;
+
+ BFD_ASSERT (!elf_flags_init (obfd)
+ || elf_elfheader (obfd)->e_flags ==
+ elf_elfheader (ibfd)->e_flags);
+
+ elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
+ elf_flags_init (obfd) = TRUE;
+
+ /* Copy object attributes. */
+ _bfd_elf_copy_obj_attributes (ibfd, obfd);
+
+ return TRUE;
+}
+
+/* Merge backend specific data from an object
+ file to the output object file when linking. */
+
+static bfd_boolean
+visium_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
+{
+ flagword old_flags;
+ flagword new_flags;
+ flagword mismatch;
+ const char *opt_arch = NULL;
+ const char *new_opt_with = NULL;
+ const char *old_opt_with = NULL;
+ const char *with = "with";
+ const char *without = "without";
+ const char *mcm = "mcm";
+ const char *mcm24 = "mcm24";
+ const char *gr6 = "gr6";
+
+ new_flags = elf_elfheader (ibfd)->e_flags;
+ old_flags = elf_elfheader (obfd)->e_flags;
+
+ if (!elf_flags_init (obfd))
+ {
+ /* First call, no flags set. */
+ elf_flags_init (obfd) = TRUE;
+ elf_elfheader (obfd)->e_flags = new_flags;
+ }
+ else
+ {
+ mismatch = (new_flags ^ old_flags)
+ & (EF_VISIUM_ARCH_MCM | EF_VISIUM_ARCH_MCM24 | EF_VISIUM_ARCH_GR6);
+ if (mismatch & EF_VISIUM_ARCH_GR6)
+ {
+ opt_arch = gr6;
+ new_opt_with = new_flags & EF_VISIUM_ARCH_GR6 ? with : without;
+ old_opt_with = old_flags & EF_VISIUM_ARCH_GR6 ? with : without;
+ }
+ else if (mismatch & EF_VISIUM_ARCH_MCM)
+ {
+ opt_arch = mcm;
+ new_opt_with = new_flags & EF_VISIUM_ARCH_MCM ? with : without;
+ old_opt_with = old_flags & EF_VISIUM_ARCH_MCM ? with : without;
+ }
+ else if (mismatch & EF_VISIUM_ARCH_MCM24)
+ {
+ opt_arch = mcm24;
+ new_opt_with = new_flags & EF_VISIUM_ARCH_MCM24 ? with : without;
+ old_opt_with = old_flags & EF_VISIUM_ARCH_MCM24 ? with : without;
+ }
+
+ if (mismatch)
+ _bfd_error_handler
+ (_
+ ("%s: compiled %s -mtune=%s and linked with modules"
+ " compiled %s -mtune=%s"),
+ bfd_get_filename (ibfd), new_opt_with, opt_arch, old_opt_with,
+ opt_arch);
+ }
+
+ return TRUE;
+}
+
+static bfd_boolean
+visium_elf_print_private_bfd_data (bfd *abfd, void *ptr)
+{
+ FILE *file = (FILE *) ptr;
+ flagword flags;
+
+ BFD_ASSERT (abfd != NULL && ptr != NULL);
+
+ /* Print normal ELF private data. */
+ _bfd_elf_print_private_bfd_data (abfd, ptr);
+
+ flags = elf_elfheader (abfd)->e_flags;
+ fprintf (file, _("private flags = 0x%lx:"), (long) flags);
+
+ if (flags & EF_VISIUM_ARCH_GR6)
+ fprintf (file, " -mtune=gr6");
+ else if (flags & EF_VISIUM_ARCH_MCM)
+ fprintf (file, " -mtune=mcm");
+ else if (flags & EF_VISIUM_ARCH_MCM24)
+ fprintf (file, " -mtune=mcm24");
+
+ fputc ('\n', file);
+ return TRUE;
+}
+
+#define ELF_ARCH bfd_arch_visium
+#define ELF_MACHINE_CODE EM_VISIUM
+#define ELF_MAXPAGESIZE 1
+
+#define TARGET_BIG_SYM visium_elf32_vec
+#define TARGET_BIG_NAME "elf32-visium"
+
+#define elf_info_to_howto_rel NULL
+#define elf_info_to_howto visium_info_to_howto_rela
+#define elf_backend_relocate_section visium_elf_relocate_section
+#define elf_backend_gc_mark_hook visium_elf_gc_mark_hook
+#define elf_backend_check_relocs visium_elf_check_relocs
+#define elf_backend_rela_normal 1
+
+#define elf_backend_can_gc_sections 1
+
+#define bfd_elf32_bfd_reloc_type_lookup visium_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup visium_reloc_name_lookup
+
+#define bfd_elf32_bfd_set_private_flags visium_elf_set_private_flags
+#define bfd_elf32_bfd_copy_private_bfd_data visium_elf_copy_private_bfd_data
+#define bfd_elf32_bfd_merge_private_bfd_data visium_elf_merge_private_bfd_data
+#define bfd_elf32_bfd_print_private_bfd_data visium_elf_print_private_bfd_data
+#define elf_backend_post_process_headers visium_elf_post_process_headers
+
+#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / commitdiff
