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authorRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
committerRichard Henderson <rth@redhat.com>1999-05-03 07:29:11 +0000
commit252b5132c753830d5fd56823373aed85f2a0db63 (patch)
tree1af963bfd8d3e55167b81def4207f175eaff3a56 /bfd/elf32-fr30.c
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19990502 sourceware importbinu_ss_19990502
Diffstat (limited to 'bfd/elf32-fr30.c')
-rw-r--r--bfd/elf32-fr30.c811
1 files changed, 811 insertions, 0 deletions
diff --git a/bfd/elf32-fr30.c b/bfd/elf32-fr30.c
new file mode 100644
index 0000000..7c8725f
--- /dev/null
+++ b/bfd/elf32-fr30.c
@@ -0,0 +1,811 @@
+/* FR30-specific support for 32-bit ELF.
+ Copyright (C) 1998 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+
+#include "bfd.h"
+#include "sysdep.h"
+#include "libbfd.h"
+#include "elf-bfd.h"
+#include "elf/fr30.h"
+
+/* Forward declarations. */
+static bfd_reloc_status_type fr30_elf_i20_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static bfd_reloc_status_type fr30_elf_i32_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static reloc_howto_type * fr30_reloc_type_lookup
+ PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
+static void fr30_info_to_howto_rela
+ PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
+static boolean fr30_elf_relocate_section
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
+static bfd_reloc_status_type fr30_final_link_relocate
+ PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma));
+static boolean fr30_elf_gc_sweep_hook
+ PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *));
+static asection * fr30_elf_gc_mark_hook
+ PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, struct elf_link_hash_entry *, Elf_Internal_Sym *));
+
+static reloc_howto_type fr30_elf_howto_table [] =
+{
+ /* This reloc does nothing. */
+ HOWTO (R_FR30_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_FR30_NONE", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* An 8 bit absolute relocation. */
+ HOWTO (R_FR30_8, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ false, /* pc_relative */
+ 4, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_FR30_8", /* name */
+ true, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0x0ff0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A 20 bit absolute relocation. */
+ HOWTO (R_FR30_20, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 20, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ fr30_elf_i20_reloc, /* special_function */
+ "R_FR30_20", /* name */
+ true, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x00f0ffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A 32 bit absolute relocation. */
+ HOWTO (R_FR30_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_FR30_32", /* name */
+ true, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A 32 bit into 48 bits absolute relocation. */
+ HOWTO (R_FR30_48, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ false, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ fr30_elf_i32_reloc, /* special_function */
+ "R_FR30_48", /* name */
+ true, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A 6 bit absolute relocation. */
+ HOWTO (R_FR30_6_IN_4, /* type */
+ 2, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 6, /* bitsize */
+ false, /* pc_relative */
+ 4, /* bitpos */
+ complain_overflow_unsigned, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_FR30_6_IN_4", /* name */
+ true, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0x00f0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* An 8 bit absolute relocation. */
+ HOWTO (R_FR30_8_IN_8, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 8, /* bitsize */
+ false, /* pc_relative */
+ 4, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc,/* special_function */
+ "R_FR30_8_IN_8", /* name */
+ true, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0x0ff0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A 9 bit absolute relocation. */
+ HOWTO (R_FR30_9_IN_8, /* type */
+ 1, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 9, /* bitsize */
+ false, /* pc_relative */
+ 4, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc,/* special_function */
+ "R_FR30_9_IN_8", /* name */
+ true, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0x0ff0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A 10 bit absolute relocation. */
+ HOWTO (R_FR30_10_IN_8, /* type */
+ 2, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 10, /* bitsize */
+ false, /* pc_relative */
+ 4, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc,/* special_function */
+ "R_FR30_10_IN_8", /* name */
+ true, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0x0ff0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A PC relative 9 bit relocation, right shifted by 1. */
+ HOWTO (R_FR30_9_PCREL, /* type */
+ 1, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 9, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_FR30_9_PCREL", /* name */
+ false, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0x00ff, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* A PC relative 12 bit relocation, right shifted by 1. */
+ HOWTO (R_FR30_12_PCREL, /* type */
+ 1, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 12, /* bitsize */
+ true, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_FR30_12_PCREL", /* name */
+ false, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0x07ff, /* dst_mask */
+ false), /* pcrel_offset */
+ /* GNU extension to record C++ vtable hierarchy */
+ HOWTO (R_FR30_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_FR30_GNU_VTINHERIT", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
+
+ /* GNU extension to record C++ vtable member usage */
+ HOWTO (R_FR30_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 */
+ _bfd_elf_rel_vtable_reloc_fn, /* special_function */
+ "R_FR30_GNU_VTENTRY", /* name */
+ false, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ false), /* pcrel_offset */
+
+};
+
+/* Utility to actually perform an R_FR30_20 reloc. */
+
+static bfd_reloc_status_type
+fr30_elf_i20_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message)
+ bfd * abfd;
+ arelent * reloc_entry;
+ asymbol * symbol;
+ PTR data;
+ asection * input_section;
+ bfd * output_bfd;
+ char ** error_message;
+{
+ bfd_vma relocation;
+ unsigned long x;
+
+ /* This part is from bfd_elf_generic_reloc. */
+ 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;
+ }
+
+ if (output_bfd != NULL)
+ /* FIXME: See bfd_perform_relocation. Is this right? */
+ return bfd_reloc_ok;
+
+ relocation =
+ symbol->value
+ + symbol->section->output_section->vma
+ + symbol->section->output_offset
+ + reloc_entry->addend;
+
+ if (relocation > ((1U << 20) - 1))
+ return bfd_reloc_overflow;
+
+ x = bfd_get_32 (abfd, data + reloc_entry->address);
+ x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4);
+ bfd_put_32 (abfd, x, data + reloc_entry->address);
+
+ return bfd_reloc_ok;
+}
+
+
+/* Utility to actually perform a R_FR30_48 reloc. */
+
+static bfd_reloc_status_type
+fr30_elf_i32_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message)
+ bfd * abfd;
+ arelent * reloc_entry;
+ asymbol * symbol;
+ PTR data;
+ asection * input_section;
+ bfd * output_bfd;
+ char ** error_message;
+{
+ bfd_vma relocation;
+
+ /* This part is from bfd_elf_generic_reloc. */
+ 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;
+ }
+
+ if (output_bfd != NULL)
+ /* FIXME: See bfd_perform_relocation. Is this right? */
+ return bfd_reloc_ok;
+
+ relocation =
+ symbol->value
+ + symbol->section->output_section->vma
+ + symbol->section->output_offset
+ + reloc_entry->addend;
+
+ bfd_put_32 (abfd, relocation, data + reloc_entry->address + 2);
+
+ return bfd_reloc_ok;
+}
+
+/* Map BFD reloc types to FR30 ELF reloc types. */
+
+struct fr30_reloc_map
+{
+ bfd_reloc_code_real_type bfd_reloc_val;
+ unsigned int fr30_reloc_val;
+};
+
+static const struct fr30_reloc_map fr30_reloc_map [] =
+{
+ { BFD_RELOC_NONE, R_FR30_NONE },
+ { BFD_RELOC_8, R_FR30_8 },
+ { BFD_RELOC_FR30_20, R_FR30_20 },
+ { BFD_RELOC_32, R_FR30_32 },
+ { BFD_RELOC_FR30_48, R_FR30_48 },
+ { BFD_RELOC_FR30_6_IN_4, R_FR30_6_IN_4 },
+ { BFD_RELOC_FR30_8_IN_8, R_FR30_8_IN_8 },
+ { BFD_RELOC_FR30_9_IN_8, R_FR30_9_IN_8 },
+ { BFD_RELOC_FR30_10_IN_8, R_FR30_10_IN_8 },
+ { BFD_RELOC_FR30_9_PCREL, R_FR30_9_PCREL },
+ { BFD_RELOC_FR30_12_PCREL, R_FR30_12_PCREL },
+ { BFD_RELOC_VTABLE_INHERIT, R_FR30_GNU_VTINHERIT },
+ { BFD_RELOC_VTABLE_ENTRY, R_FR30_GNU_VTENTRY },
+};
+
+static reloc_howto_type *
+fr30_reloc_type_lookup (abfd, code)
+ bfd * abfd;
+ bfd_reloc_code_real_type code;
+{
+ unsigned int i;
+
+ for (i = sizeof (fr30_reloc_map) / sizeof (fr30_reloc_map[0]);
+ --i;)
+ if (fr30_reloc_map [i].bfd_reloc_val == code)
+ return & fr30_elf_howto_table [fr30_reloc_map[i].fr30_reloc_val];
+
+ return NULL;
+}
+
+/* Set the howto pointer for an FR30 ELF reloc. */
+
+static void
+fr30_info_to_howto_rela (abfd, cache_ptr, dst)
+ bfd * abfd;
+ arelent * cache_ptr;
+ Elf32_Internal_Rela * dst;
+{
+ unsigned int r_type;
+
+ r_type = ELF32_R_TYPE (dst->r_info);
+ BFD_ASSERT (r_type < (unsigned int) R_FR30_max);
+ cache_ptr->howto = & fr30_elf_howto_table [r_type];
+}
+
+/* Perform a single relocation. By default we use the standard BFD
+ routines, but a few relocs, we have to do them ourselves. */
+
+static bfd_reloc_status_type
+fr30_final_link_relocate (howto, input_bfd, input_section, contents, rel, relocation)
+ reloc_howto_type * howto;
+ bfd * input_bfd;
+ asection * input_section;
+ bfd_byte * contents;
+ Elf_Internal_Rela * rel;
+ bfd_vma relocation;
+{
+ bfd_reloc_status_type r = bfd_reloc_ok;
+ bfd_vma x;
+ bfd_signed_vma srel;
+
+ switch (howto->type)
+ {
+ case R_FR30_20:
+ contents += rel->r_offset;
+ relocation += rel->r_addend;
+
+ if (relocation > ((1 << 20) - 1))
+ return bfd_reloc_overflow;
+
+ x = bfd_get_32 (input_bfd, contents);
+ x = (x & 0xff0f0000) | (relocation & 0x0000ffff) | ((relocation & 0x000f0000) << 4);
+ bfd_put_32 (input_bfd, x, contents);
+ break;
+
+ case R_FR30_48:
+ contents += rel->r_offset + 2;
+ relocation += rel->r_addend;
+ bfd_put_32 (input_bfd, relocation, contents);
+ break;
+
+ case R_FR30_9_PCREL:
+ contents += rel->r_offset + 1;
+ srel = (bfd_signed_vma) relocation;
+ srel += rel->r_addend;
+ srel -= rel->r_offset;
+ srel -= 2; /* Branch instructions add 2 to the PC... */
+ srel -= (input_section->output_section->vma +
+ input_section->output_offset);
+
+ if (srel & 1)
+ return bfd_reloc_outofrange;
+ if (srel > ((1 << 8) - 1) || (srel < - (1 << 8)))
+ return bfd_reloc_overflow;
+
+ bfd_put_8 (input_bfd, srel >> 1, contents);
+ break;
+
+ case R_FR30_12_PCREL:
+ contents += rel->r_offset;
+ srel = (bfd_signed_vma) relocation;
+ srel += rel->r_addend;
+ srel -= rel->r_offset;
+ srel -= 2; /* Branch instructions add 2 to the PC... */
+ srel -= (input_section->output_section->vma +
+ input_section->output_offset);
+
+ if (srel & 1)
+ return bfd_reloc_outofrange;
+ if (srel > ((1 << 11) - 1) || (srel < - (1 << 11)))
+ return bfd_reloc_overflow;
+
+ x = bfd_get_16 (input_bfd, contents);
+ x = (x & 0xf800) | ((srel >> 1) & 0x7ff);
+ bfd_put_16 (input_bfd, x, contents);
+ break;
+
+ default:
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, rel->r_addend);
+ }
+
+ return r;
+}
+
+
+/* Relocate an FR30 ELF section.
+ There is some attempt to make this function usable for many architectures,
+ both USE_REL and USE_RELA ['twould be nice if such a critter existed],
+ if only to serve as a learning tool.
+
+ The RELOCATE_SECTION function is called by the new ELF backend linker
+ to handle the relocations for a section.
+
+ The relocs are always passed as Rela structures; if the section
+ actually uses Rel structures, the r_addend field will always be
+ zero.
+
+ This function is responsible for adjusting the section contents as
+ necessary, and (if using Rela relocs and generating a relocateable
+ output file) adjusting the reloc addend as necessary.
+
+ This function does not have to worry about setting the reloc
+ address or the reloc symbol index.
+
+ LOCAL_SYMS is a pointer to the swapped in local symbols.
+
+ LOCAL_SECTIONS is an array giving the section in the input file
+ corresponding to the st_shndx field of each local symbol.
+
+ The global hash table entry for the global symbols can be found
+ via elf_sym_hashes (input_bfd).
+
+ When generating relocateable output, this function must handle
+ STB_LOCAL/STT_SECTION symbols specially. The output symbol is
+ going to be the section symbol corresponding to the output
+ section, which means that the addend must be adjusted
+ accordingly. */
+
+static boolean
+fr30_elf_relocate_section (output_bfd, info, input_bfd, input_section,
+ contents, relocs, local_syms, local_sections)
+ 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;
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+
+ if ( r_type == R_FR30_GNU_VTINHERIT
+ || r_type == R_FR30_GNU_VTENTRY)
+ continue;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ if (info->relocateable)
+ {
+ /* This is a relocateable link. We don't have to change
+ anything, unless the reloc is against a section symbol,
+ in which case we have to adjust according to where the
+ section symbol winds up in the output section. */
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+
+ if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ {
+ sec = local_sections [r_symndx];
+ rel->r_addend += sec->output_offset + sym->st_value;
+ }
+ }
+
+ continue;
+ }
+
+ /* This is a final link. */
+ howto = fr30_elf_howto_table + ELF32_R_TYPE (rel->r_info);
+ h = NULL;
+ sym = NULL;
+ sec = NULL;
+
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ sec = local_sections [r_symndx];
+ relocation = (sec->output_section->vma
+ + sec->output_offset
+ + sym->st_value);
+
+ 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;
+#if 0
+ fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
+ sec->name, name, sym->st_name,
+ sec->output_section->vma, sec->output_offset,
+ sym->st_value, rel->r_addend);
+#endif
+ }
+ 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;
+
+ name = h->root.root.string;
+
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ sec = h->root.u.def.section;
+ relocation = (h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
+#if 0
+ fprintf (stderr,
+ "defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n",
+ sec->name, name, h->root.u.def.value,
+ sec->output_section->vma, sec->output_offset, relocation);
+#endif
+ }
+ else if (h->root.type == bfd_link_hash_undefweak)
+ {
+#if 0
+ fprintf (stderr, "undefined: sec: %s, name: %s\n",
+ sec->name, name);
+#endif
+ relocation = 0;
+ }
+ else
+ {
+ if (! ((*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd,
+ input_section, rel->r_offset)))
+ return false;
+#if 0
+ fprintf (stderr, "unknown: name: %s\n", name);
+#endif
+ relocation = 0;
+ }
+ }
+
+ r = fr30_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel, relocation);
+
+ if (r != bfd_reloc_ok)
+ {
+ const char * msg = (const char *) NULL;
+
+ switch (r)
+ {
+ case bfd_reloc_overflow:
+ r = info->callbacks->reloc_overflow
+ (info, 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);
+ 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;
+}
+
+/* Return the section that should be marked against GC for a given
+ relocation. */
+
+static asection *
+fr30_elf_gc_mark_hook (abfd, info, rel, h, sym)
+ bfd * abfd;
+ 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_FR30_GNU_VTINHERIT:
+ case R_FR30_GNU_VTENTRY:
+ break;
+
+ default:
+ switch (h->root.type)
+ {
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ return h->root.u.def.section;
+
+ case bfd_link_hash_common:
+ return h->root.u.c.p->section;
+ }
+ }
+ }
+ else
+ {
+ if (!(elf_bad_symtab (abfd)
+ && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
+ && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
+ && sym->st_shndx != SHN_COMMON))
+ {
+ return bfd_section_from_elf_index (abfd, sym->st_shndx);
+ }
+ }
+
+ return NULL;
+}
+
+/* Update the got entry reference counts for the section being removed. */
+
+static boolean
+fr30_elf_gc_sweep_hook (abfd, info, sec, relocs)
+ bfd * abfd;
+ struct bfd_link_info * info;
+ asection * sec;
+ const Elf_Internal_Rela * relocs;
+{
+ return true;
+}
+
+/* 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 boolean
+fr30_elf_check_relocs (abfd, info, sec, 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, **sym_hashes_end;
+ const Elf_Internal_Rela *rel;
+ const Elf_Internal_Rela *rel_end;
+
+ if (info->relocateable)
+ return true;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym);
+ if (!elf_bad_symtab (abfd))
+ sym_hashes_end -= symtab_hdr->sh_info;
+
+ 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];
+
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ /* This relocation describes the C++ object vtable hierarchy.
+ Reconstruct it for later use during GC. */
+ case R_FR30_GNU_VTINHERIT:
+ if (!_bfd_elf32_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_FR30_GNU_VTENTRY:
+ if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ return false;
+ break;
+ }
+ }
+
+ return true;
+}
+
+#define ELF_ARCH bfd_arch_fr30
+#define ELF_MACHINE_CODE EM_CYGNUS_FR30
+#define ELF_MAXPAGESIZE 0x1000
+
+#define TARGET_BIG_SYM bfd_elf32_fr30_vec
+#define TARGET_BIG_NAME "elf32-fr30"
+
+#define elf_info_to_howto_rel NULL
+#define elf_info_to_howto fr30_info_to_howto_rela
+#define elf_backend_relocate_section fr30_elf_relocate_section
+#define elf_backend_gc_mark_hook fr30_elf_gc_mark_hook
+#define elf_backend_gc_sweep_hook fr30_elf_gc_sweep_hook
+#define elf_backend_check_relocs fr30_elf_check_relocs
+
+#define elf_backend_can_gc_sections 1
+
+#define bfd_elf32_bfd_reloc_type_lookup fr30_reloc_type_lookup
+
+#include "elf32-target.h"