/* Intel i860 specific support for 32-bit ELF.
- Copyright 1993, 1995, 1999, 2000, 2001, 2002, 2003
+ Copyright 1993, 1995, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2007
Free Software Foundation, Inc.
Full i860 support contributed by Jason Eckhardt <jle@cygnus.com>.
-This file is part of BFD, the Binary File Descriptor library.
+ 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 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.
+ 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. */
+ 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 "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/i860.h"
+/* special_function for R_860_PC26 relocation. */
+static bfd_reloc_status_type
+i860_howto_pc26_reloc (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data ATTRIBUTE_UNUSED,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ bfd_vma insn;
+ bfd_vma relocation;
+ bfd_byte *addr;
+
+ if (output_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;
+ }
+
+ /* Used elf32-mips.c as an example. */
+ if (bfd_is_und_section (symbol->section)
+ && output_bfd == (bfd *) NULL)
+ return bfd_reloc_undefined;
+
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ relocation += reloc_entry->addend;
+
+ if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
+ return bfd_reloc_outofrange;
+
+ /* Adjust for PC-relative relocation. */
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset
+ + reloc_entry->address
+ + 4);
+
+ /* Check for target out of range. */
+ if ((bfd_signed_vma)relocation > (0x3ffffff << 2)
+ || (bfd_signed_vma)relocation < (-0x4000000 << 2))
+ return bfd_reloc_outofrange;
+
+ addr = (bfd_byte *) data + reloc_entry->address;
+ insn = bfd_get_32 (abfd, addr);
+
+ relocation >>= reloc_entry->howto->rightshift;
+ insn = (insn & ~reloc_entry->howto->dst_mask)
+ | (relocation & reloc_entry->howto->dst_mask);
+
+ bfd_put_32 (abfd, (bfd_vma) insn, addr);
+
+ return bfd_reloc_ok;
+}
+
+/* special_function for R_860_PC16 relocation. */
+static bfd_reloc_status_type
+i860_howto_pc16_reloc (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ bfd_vma insn;
+ bfd_vma relocation;
+ bfd_byte *addr;
+
+ if (output_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;
+ }
+
+ /* Used elf32-mips.c as an example. */
+ if (bfd_is_und_section (symbol->section)
+ && output_bfd == (bfd *) NULL)
+ return bfd_reloc_undefined;
+
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ relocation += reloc_entry->addend;
+
+ if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
+ return bfd_reloc_outofrange;
+
+ /* Adjust for PC-relative relocation. */
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset
+ + reloc_entry->address
+ + 4);
+
+ /* Check for target out of range. */
+ if ((bfd_signed_vma)relocation > (0x7fff << 2)
+ || (bfd_signed_vma)relocation < (-0x8000 << 2))
+ return bfd_reloc_outofrange;
+
+ addr = (bfd_byte *) data + reloc_entry->address;
+ insn = bfd_get_32 (abfd, addr);
+
+ relocation >>= reloc_entry->howto->rightshift;
+ relocation = (((relocation & 0xf800) << 5) | (relocation & 0x7ff))
+ & reloc_entry->howto->dst_mask;
+ insn = (insn & ~reloc_entry->howto->dst_mask) | relocation;
+
+ bfd_put_32 (abfd, (bfd_vma) insn, addr);
+
+ return bfd_reloc_ok;
+}
+
+/* special_function for R_860_HIGHADJ relocation. */
+static bfd_reloc_status_type
+i860_howto_highadj_reloc (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ bfd_vma insn;
+ bfd_vma relocation;
+ bfd_byte *addr;
+
+ if (output_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;
+ }
+
+ /* Used elf32-mips.c as an example. */
+ if (bfd_is_und_section (symbol->section)
+ && output_bfd == (bfd *) NULL)
+ return bfd_reloc_undefined;
+
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ relocation += reloc_entry->addend;
+ relocation += 0x8000;
+
+ if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
+ return bfd_reloc_outofrange;
+
+ addr = (bfd_byte *) data + reloc_entry->address;
+ insn = bfd_get_32 (abfd, addr);
+
+ relocation = ((relocation >> 16) & 0xffff);
+
+ insn = (insn & 0xffff0000) | relocation;
+
+ bfd_put_32 (abfd, (bfd_vma) insn, addr);
+
+ return bfd_reloc_ok;
+}
+
+/* special_function for R_860_SPLITn relocations. */
+static bfd_reloc_status_type
+i860_howto_splitn_reloc (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void *data,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ bfd_vma insn;
+ bfd_vma relocation;
+ bfd_byte *addr;
+
+ if (output_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;
+ }
+
+ /* Used elf32-mips.c as an example. */
+ if (bfd_is_und_section (symbol->section)
+ && output_bfd == (bfd *) NULL)
+ return bfd_reloc_undefined;
+
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ relocation += reloc_entry->addend;
+
+ if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
+ return bfd_reloc_outofrange;
+
+ addr = (bfd_byte *) data + reloc_entry->address;
+ insn = bfd_get_32 (abfd, addr);
+
+ relocation = (((relocation & 0xf800) << 5) | (relocation & 0x7ff))
+ & reloc_entry->howto->dst_mask;
+ insn = (insn & ~reloc_entry->howto->dst_mask) | relocation;
+
+ bfd_put_32 (abfd, (bfd_vma) insn, addr);
+
+ return bfd_reloc_ok;
+}
/* This howto table is preliminary. */
static reloc_howto_type elf32_i860_howto_table [] =
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ i860_howto_pc26_reloc, /* special_function */
"R_860_PC26", /* name */
FALSE, /* partial_inplace */
0x3ffffff, /* src_mask */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ i860_howto_pc16_reloc, /* special_function */
"R_860_PC16", /* name */
FALSE, /* partial_inplace */
0x1f07ff, /* src_mask */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ i860_howto_splitn_reloc, /* special_function */
"R_860_SPLIT0", /* name */
FALSE, /* partial_inplace */
0x1f07ff, /* src_mask */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ i860_howto_splitn_reloc, /* special_function */
"R_860_SPLIT1", /* name */
FALSE, /* partial_inplace */
0x1f07fe, /* src_mask */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ i860_howto_splitn_reloc, /* special_function */
"R_860_SPLIT2", /* name */
FALSE, /* partial_inplace */
0x1f07fc, /* src_mask */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
+ i860_howto_highadj_reloc, /* special_function */
"R_860_HIGHADJ", /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
return lookup_howto (rtype);
}
+static reloc_howto_type *
+elf32_i860_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < (sizeof (elf32_i860_howto_table)
+ / sizeof (elf32_i860_howto_table[0]));
+ i++)
+ if (elf32_i860_howto_table[i].name != NULL
+ && strcasecmp (elf32_i860_howto_table[i].name, r_name) == 0)
+ return &elf32_i860_howto_table[i];
+
+ return NULL;
+}
+
/* Given a ELF reloc, return the matching HOWTO structure. */
static void
elf32_i860_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
/* Relocate. */
value += rello->r_addend;
- /* Separate the fields and insert. */
+ /* Adjust the value by 4, then separate the fields and insert. */
+ value = (value - 4) >> howto->rightshift;
value = (((value & 0xf800) << 5) | (value & 0x7ff)) & howto->dst_mask;
insn = (insn & ~howto->dst_mask) | value;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
- if (info->relocatable)
- return TRUE;
-
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
relend = relocs + input_section->reloc_count;
int r_type;
r_type = ELF32_R_TYPE (rel->r_info);
-
-#if 0
- if ( r_type == R_860_GNU_VTINHERIT
- || r_type == R_860_GNU_VTENTRY)
- continue;
-#endif
-
r_symndx = ELF32_R_SYM (rel->r_info);
howto = lookup_howto ((unsigned) ELF32_R_TYPE (rel->r_info));
{
sym = local_syms + r_symndx;
sec = local_sections [r_symndx];
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
+ 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);
}
else
{
- h = sym_hashes [r_symndx - symtab_hdr->sh_info];
+ bfd_boolean unresolved_reloc, warned;
- 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;
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned);
+ }
- 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);
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- {
- relocation = 0;
- }
- else
- {
- if (! ((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset, TRUE)))
- return FALSE;
- relocation = 0;
- }
+ 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 (info->relocatable)
+ continue;
+
switch (r_type)
{
default:
{
case bfd_reloc_overflow:
r = info->callbacks->reloc_overflow
- (info, name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset);
+ (info, (h ? &h->root : NULL), name, howto->name,
+ (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
break;
case bfd_reloc_undefined:
#define elf_info_to_howto elf32_i860_info_to_howto_rela
#define elf_backend_relocate_section elf32_i860_relocate_section
#define bfd_elf32_bfd_reloc_type_lookup elf32_i860_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup elf32_i860_reloc_name_lookup
#define bfd_elf32_bfd_is_local_label_name elf32_i860_is_local_label_name
#include "elf32-target.h"
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