/* Morpho Technologies MT specific support for 32-bit ELF
- Copyright 2001, 2002, 2003, 2004, 2005
- Free Software Foundation, Inc.
+ Copyright (C) 2001-2015 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
+ 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,
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. */
+ Foundation, Inc., 59 Temple Place - Suite 330, Boston,
+ MA 02111-1307, USA. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/mt.h"
/* Prototypes. */
-static reloc_howto_type * mt_reloc_type_lookup
+static reloc_howto_type * mt_reloc_type_lookup
(bfd *, bfd_reloc_code_real_type);
static void mt_info_to_howto_rela
(bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma);
static bfd_reloc_status_type mt_final_link_relocate
- (reloc_howto_type *, bfd *, asection *, bfd_byte *,
+ (reloc_howto_type *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, bfd_vma);
static bfd_boolean mt_elf_relocate_section
- (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
+ (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
/* Relocation tables. */
{
/* This reloc does nothing. */
HOWTO (R_MT_NONE, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_MT_NONE", /* name */
- FALSE, /* partial_inplace */
- 0 , /* src_mask */
- 0, /* dst_mask */
+ 0, /* rightshift */
+ 3, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MT_NONE", /* name */
+ FALSE, /* partial_inplace */
+ 0 , /* src_mask */
+ 0, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 16 bit absolute relocation. */
HOWTO (R_MT_16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_MT_16", /* name */
- FALSE, /* partial_inplace */
- 0 , /* src_mask */
- 0xffff, /* dst_mask */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MT_16", /* name */
+ FALSE, /* partial_inplace */
+ 0 , /* src_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 32 bit absolute relocation. */
HOWTO (R_MT_32, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- FALSE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_MT_32", /* name */
- FALSE, /* partial_inplace */
- 0 , /* src_mask */
- 0xffffffff, /* dst_mask */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MT_32", /* name */
+ FALSE, /* partial_inplace */
+ 0 , /* src_mask */
+ 0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 32 bit pc-relative relocation. */
HOWTO (R_MT_32_PCREL, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_MT_32_PCREL", /* name */
- FALSE, /* partial_inplace */
- 0 , /* src_mask */
- 0xffffffff, /* dst_mask */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MT_32_PCREL", /* name */
+ FALSE, /* partial_inplace */
+ 0 , /* src_mask */
+ 0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* A 16 bit pc-relative relocation. */
HOWTO (R_MT_PC16, /* type */
- 0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- TRUE, /* pc_relative */
- 0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- bfd_elf_generic_reloc, /* special_function */
- "R_MT_PC16", /* name */
- FALSE, /* partial_inplace */
- 0, /* src_mask */
- 0xffff, /* dst_mask */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_MT_PC16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* high 16 bits of symbol value. */
return NULL;
}
+static reloc_howto_type *
+mt_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < sizeof (mt_elf_howto_table) / sizeof (mt_elf_howto_table[0]);
+ i++)
+ if (mt_elf_howto_table[i].name != NULL
+ && strcasecmp (mt_elf_howto_table[i].name, r_name) == 0)
+ return &mt_elf_howto_table[i];
+
+ return NULL;
+}
+
bfd_reloc_status_type
mt_elf_relocate_hi16
(bfd * input_bfd,
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
+ if (r_type >= (unsigned int) R_MT_max)
+ {
+ _bfd_error_handler (_("%A: invalid MT reloc number: %d"), abfd, r_type);
+ r_type = 0;
+ }
cache_ptr->howto = & mt_elf_howto_table [r_type];
}
bfd_reloc_status_type r;
const char * name = NULL;
int r_type;
-
+
r_type = ELF32_R_TYPE (rel->r_info);
r_symndx = ELF32_R_SYM (rel->r_info);
- /* This is a final link. */
howto = mt_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 = _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;
+ 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);
+ unresolved_reloc, warned, ignored);
name = h->root.root.string;
}
+ if (sec != NULL && discarded_section (sec))
+ RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+ rel, 1, relend, howto, 0, contents);
+
+ if (info->relocatable)
+ continue;
/* Finally, the sole MT-specific part. */
switch (r_type)
(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;
return TRUE;
}
-/* Return the section that should be marked against GC for a given
- relocation. */
-
-static asection *
-mt_elf_gc_mark_hook
- (asection * sec,
- struct bfd_link_info * info ATTRIBUTE_UNUSED,
- Elf_Internal_Rela * rel ATTRIBUTE_UNUSED,
- struct elf_link_hash_entry * h,
- Elf_Internal_Sym * sym)
-{
- if (h != NULL)
- {
- 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;
-
- default:
- break;
- }
- }
- else
- {
- if (!(elf_bad_symtab (sec->owner)
- && 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 (sec->owner, sym->st_shndx);
- }
-
- return NULL;
-}
-
-/* Update the got entry reference counts for the section being
- removed. */
-
-static bfd_boolean
-mt_elf_gc_sweep_hook
- (bfd * abfd ATTRIBUTE_UNUSED,
- struct bfd_link_info * info ATTRIBUTE_UNUSED,
- asection * sec ATTRIBUTE_UNUSED,
- const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED)
-{
- 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 bfd_boolean
mt_elf_check_relocs
(bfd * abfd,
{
Elf_Internal_Shdr * symtab_hdr;
struct elf_link_hash_entry ** sym_hashes;
- struct elf_link_hash_entry ** sym_hashes_end;
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);
- 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;
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;
+
+ /* PR15323, ref flags aren't set for references in the same
+ object. */
+ h->root.non_ir_ref = 1;
}
}
return TRUE;
}
-static bfd_boolean
-mt_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;
- return TRUE;
-}
-
/* Merge backend specific data from an object file to the output
object file when linking. */
mt_elf_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
{
flagword old_flags, new_flags;
- bfd_boolean error = FALSE;
+ bfd_boolean ok = TRUE;
- /* Check if we have the same endianess. */
+ /* Check if we have the same endianness. */
if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
return FALSE;
{
/* CPU has changed. This is invalid, because MRISC, MRISC2 and
MS2 are not subsets of each other. */
- error = 1;
-
- /* FIXME:However, until the compiler is multilibbed, preventing
- mixing breaks the build. So we allow merging and use the
- greater CPU value. This is of course unsafe. */
- error = 0;
- if ((new_flags & EF_MT_CPU_MASK) > (old_flags & EF_MT_CPU_MASK))
- old_flags = ((old_flags & ~EF_MT_CPU_MASK)
- | (new_flags & EF_MT_CPU_MASK));
+ ok = FALSE;
}
- if (!error)
+
+ if (ok)
{
obfd->arch_info = ibfd->arch_info;
elf_elfheader (obfd)->e_flags = old_flags;
}
- return !error;
+ return ok;
}
static bfd_boolean
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);
+ fprintf (file, _("private flags = 0x%lx:"), (unsigned long) flags);
switch (flags & EF_MT_CPU_MASK)
{
}
\f
-#define TARGET_BIG_SYM bfd_elf32_mt_vec
+#define TARGET_BIG_SYM mt_elf32_vec
#define TARGET_BIG_NAME "elf32-mt"
#define ELF_ARCH bfd_arch_mt
#define elf_backend_relocate_section mt_elf_relocate_section
#define bfd_elf32_bfd_reloc_type_lookup mt_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup mt_reloc_name_lookup
-#define elf_backend_gc_mark_hook mt_elf_gc_mark_hook
-#define elf_backend_gc_sweep_hook mt_elf_gc_sweep_hook
#define elf_backend_check_relocs mt_elf_check_relocs
#define elf_backend_object_p mt_elf_object_p
#define elf_backend_rela_normal 1
#define elf_backend_can_gc_sections 1
#define bfd_elf32_bfd_set_private_flags mt_elf_set_private_flags
-#define bfd_elf32_bfd_copy_private_bfd_data mt_elf_copy_private_bfd_data
#define bfd_elf32_bfd_merge_private_bfd_data mt_elf_merge_private_bfd_data
#define bfd_elf32_bfd_print_private_bfd_data mt_elf_print_private_bfd_data
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