-/* XSTORMY16-specific support for 32-bit ELF.
- Copyright 2000, 2001, 2002 Free Software Foundation, Inc.
+/* Xstormy16-specific support for 32-bit ELF.
+ Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
-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/xstormy16.h"
#include "libiberty.h"
-/* Forward declarations. */
-static reloc_howto_type * xstormy16_reloc_type_lookup
- PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
-static void xstormy16_info_to_howto_rela
- PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
-static bfd_reloc_status_type xstormy16_elf_24_reloc
- PARAMS ((bfd *abfd, arelent *reloc_entry, asymbol *symbol,
- PTR data, asection *input_section, bfd *output_bfd,
- char **error_message));
-static bfd_boolean xstormy16_elf_check_relocs
- PARAMS ((bfd *, struct bfd_link_info *, asection *,
- const Elf_Internal_Rela *));
-static bfd_boolean xstormy16_relax_plt_check
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static bfd_boolean xstormy16_relax_plt_realloc
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static bfd_boolean xstormy16_elf_relax_section
- PARAMS ((bfd *abfd, asection *sec, struct bfd_link_info *link_info,
- bfd_boolean *again));
-static bfd_boolean xstormy16_elf_always_size_sections
- PARAMS ((bfd *, struct bfd_link_info *));
-static bfd_boolean xstormy16_elf_relocate_section
- PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
- Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
-static bfd_boolean xstormy16_elf_finish_dynamic_sections
- PARAMS((bfd *, struct bfd_link_info *));
-static bfd_boolean xstormy16_elf_gc_sweep_hook
- PARAMS ((bfd *, struct bfd_link_info *, asection *,
- const Elf_Internal_Rela *));
-static asection * xstormy16_elf_gc_mark_hook
- PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
- struct elf_link_hash_entry *, Elf_Internal_Sym *));
+/* Handle the R_XSTORMY16_24 reloc, which has an odd bit arrangement. */
+
+static bfd_reloc_status_type
+xstormy16_elf_24_reloc (bfd *abfd,
+ arelent *reloc_entry,
+ asymbol *symbol,
+ void * data,
+ asection *input_section,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
+{
+ bfd_vma relocation, x;
+
+ if (output_bfd != NULL)
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ if (reloc_entry->address > bfd_get_section_limit (abfd, input_section))
+ return bfd_reloc_outofrange;
+
+ 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;
+
+ x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
+ x &= 0x0000ff00;
+ x |= relocation & 0xff;
+ x |= (relocation << 8) & 0xffff0000;
+ bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address);
+
+ if (relocation & ~ (bfd_vma) 0xffffff)
+ return bfd_reloc_overflow;
+
+ return bfd_reloc_ok;
+}
static reloc_howto_type xstormy16_elf_howto_table [] =
{
"R_XSTORMY16_16", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
- 0xffffffff, /* dst_mask */
+ 0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* An 8 bit absolute relocation. */
- HOWTO (R_XSTORMY16_8, /* type */
+ HOWTO (R_XSTORMY16_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 */
+ complain_overflow_unsigned, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_XSTORMY16_8", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
- 0xffffffff, /* dst_mask */
+ 0xff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 32 bit pc-relative relocation. */
"R_XSTORMY16_REL_12", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
- 0x0fff, /* dst_mask */
+ 0x0ffe, /* dst_mask */
TRUE), /* pcrel_offset */
/* A 24-bit absolute relocation suitable for the jump instructions. */
0, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
-
+
/* A 12 bit absolute relocation. */
HOWTO (R_XSTORMY16_12, /* type */
0, /* rightshift */
};
static reloc_howto_type *
-xstormy16_reloc_type_lookup (abfd, code)
- bfd * abfd ATTRIBUTE_UNUSED;
- bfd_reloc_code_real_type code;
+xstormy16_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
{
unsigned int i;
return NULL;
}
+static reloc_howto_type *
+xstormy16_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < (sizeof (xstormy16_elf_howto_table)
+ / sizeof (xstormy16_elf_howto_table[0]));
+ i++)
+ if (xstormy16_elf_howto_table[i].name != NULL
+ && strcasecmp (xstormy16_elf_howto_table[i].name, r_name) == 0)
+ return &xstormy16_elf_howto_table[i];
+
+ for (i = 0;
+ i < (sizeof (xstormy16_elf_howto_table2)
+ / sizeof (xstormy16_elf_howto_table2[0]));
+ i++)
+ if (xstormy16_elf_howto_table2[i].name != NULL
+ && strcasecmp (xstormy16_elf_howto_table2[i].name, r_name) == 0)
+ return &xstormy16_elf_howto_table2[i];
+
+ return NULL;
+}
+
/* Set the howto pointer for an XSTORMY16 ELF reloc. */
static void
-xstormy16_info_to_howto_rela (abfd, cache_ptr, dst)
- bfd * abfd ATTRIBUTE_UNUSED;
- arelent * cache_ptr;
- Elf_Internal_Rela * dst;
+xstormy16_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);
else
abort ();
}
-
-/* Handle the R_XSTORMY16_24 reloc, which has an odd bit arrangement. */
-
-static bfd_reloc_status_type
-xstormy16_elf_24_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 ATTRIBUTE_UNUSED;
-{
- bfd_vma relocation, x;
-
- if (output_bfd != NULL)
- {
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
- }
-
- if (reloc_entry->address > input_section->_cooked_size)
- return bfd_reloc_outofrange;
-
- 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;
-
- x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
- x &= 0x0000ff00;
- x |= relocation & 0xff;
- x |= (relocation << 8) & 0xffff0000;
- bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address);
-
- if (relocation & ~ (bfd_vma) 0xffffff)
- return bfd_reloc_overflow;
-
- return bfd_reloc_ok;
-}
\f
/* We support 16-bit pointers to code above 64k by generating a thunk
below 64k containing a JMPF instruction to the final address. We
sections will fall in the address space. */
static bfd_boolean
-xstormy16_elf_check_relocs (abfd, info, sec, relocs)
- bfd *abfd;
- struct bfd_link_info *info;
- asection *sec;
- const Elf_Internal_Rela *relocs;
+xstormy16_elf_check_relocs (bfd *abfd,
+ struct bfd_link_info *info,
+ asection *sec,
+ const Elf_Internal_Rela *relocs)
{
const Elf_Internal_Rela *rel, *relend;
struct elf_link_hash_entry **sym_hashes;
asection *splt;
bfd *dynobj;
- if (info->relocateable)
+ if (info->relocatable)
return TRUE;
symtab_hdr = &elf_tdata(abfd)->symtab_hdr;
splt = bfd_get_section_by_name (dynobj, ".plt");
if (splt == NULL)
{
- splt = bfd_make_section (dynobj, ".plt");
+ splt = bfd_make_section_with_flags (dynobj, ".plt",
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED
+ | SEC_READONLY
+ | SEC_CODE));
+
if (splt == NULL
- || ! bfd_set_section_flags (dynobj, splt,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY
- | SEC_CODE))
|| ! bfd_set_section_alignment (dynobj, splt, 1))
return FALSE;
}
unsigned int i;
size = symtab_hdr->sh_info * sizeof (bfd_vma);
- local_plt_offsets = (bfd_vma *) bfd_alloc (abfd, size);
+ local_plt_offsets = bfd_alloc (abfd, size);
if (local_plt_offsets == NULL)
return FALSE;
elf_local_got_offsets (abfd) = local_plt_offsets;
if (*offset == (bfd_vma) -1)
{
- *offset = splt->_raw_size;
- splt->_raw_size += 4;
+ *offset = splt->size;
+ splt->size += 4;
}
break;
/* This relocation describes the C++ object vtable hierarchy.
Reconstruct it for later use during GC. */
case R_XSTORMY16_GNU_VTINHERIT:
- if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
+ 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_XSTORMY16_GNU_VTENTRY:
- if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ BFD_ASSERT (h != NULL);
+ if (h != NULL
+ && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
return FALSE;
break;
}
};
static bfd_boolean
-xstormy16_relax_plt_check (h, xdata)
- struct elf_link_hash_entry *h;
- PTR xdata;
+xstormy16_relax_plt_check (struct elf_link_hash_entry *h, void * xdata)
{
struct relax_plt_data *data = (struct relax_plt_data *) xdata;
if (address <= 0xffff)
{
h->plt.offset = -1;
- data->splt->_cooked_size -= 4;
+ data->splt->size -= 4;
*data->again = TRUE;
}
}
previously had a plt entry, give it a new entry offset. */
static bfd_boolean
-xstormy16_relax_plt_realloc (h, xdata)
- struct elf_link_hash_entry *h;
- PTR xdata;
+xstormy16_relax_plt_realloc (struct elf_link_hash_entry *h, void * xdata)
{
bfd_vma *entry = (bfd_vma *) xdata;
}
static bfd_boolean
-xstormy16_elf_relax_section (dynobj, splt, info, again)
- bfd *dynobj;
- asection *splt;
- struct bfd_link_info *info;
- bfd_boolean *again;
+xstormy16_elf_relax_section (bfd *dynobj,
+ asection *splt,
+ struct bfd_link_info *info,
+ bfd_boolean *again)
{
struct relax_plt_data relax_plt_data;
bfd *ibfd;
/* Assume nothing changes. */
*again = FALSE;
- if (info->relocateable)
+ if (info->relocatable)
return TRUE;
/* We only relax the .plt section at the moment. */
return TRUE;
/* Quick check for an empty plt. */
- if (splt->_raw_size == 0)
+ if (splt->size == 0)
return TRUE;
- /* If this is the first time we have been called for this section,
- initialize the cooked size. */
- if (splt->_cooked_size == 0)
- splt->_cooked_size = splt->_raw_size;
-
/* Map across all global symbols; see which ones happen to
fall in the low 64k. */
relax_plt_data.splt = splt;
if (address <= 0xffff)
{
local_plt_offsets[idx] = -1;
- splt->_cooked_size -= 4;
+ splt->size -= 4;
*again = TRUE;
}
}
/* If we changed anything, walk the symbols again to reallocate
.plt entry addresses. */
- if (*again && splt->_cooked_size > 0)
+ if (*again && splt->size > 0)
{
bfd_vma entry = 0;
}
}
- splt->_raw_size = splt->_cooked_size;
return TRUE;
}
static bfd_boolean
-xstormy16_elf_always_size_sections (output_bfd, info)
- bfd *output_bfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info;
+xstormy16_elf_always_size_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
{
bfd *dynobj;
asection *splt;
- if (info->relocateable)
+ if (info->relocatable)
return TRUE;
dynobj = elf_hash_table (info)->dynobj;
splt = bfd_get_section_by_name (dynobj, ".plt");
BFD_ASSERT (splt != NULL);
- splt->contents = (bfd_byte *) bfd_zalloc (dynobj, splt->_raw_size);
+ splt->contents = bfd_zalloc (dynobj, splt->size);
if (splt->contents == NULL)
return FALSE;
zero.
This function is responsible for adjusting the section contents as
- necessary, and (if using Rela relocs and generating a relocateable
+ necessary, and (if using Rela relocs and generating a relocatable
output file) adjusting the reloc addend as necessary.
This function does not have to worry about setting the reloc
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
+ When generating relocatable 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 bfd_boolean
-xstormy16_elf_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- bfd * output_bfd ATTRIBUTE_UNUSED;
- 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;
+xstormy16_elf_relocate_section (bfd * output_bfd ATTRIBUTE_UNUSED,
+ 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;
bfd *dynobj;
asection *splt;
- if (info->relocateable)
- return TRUE;
-
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
relend = relocs + input_section->reloc_count;
{
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;
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
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;
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned);
+ }
- name = h->root.root.string;
+ if (sec != NULL && elf_discarded_section (sec))
+ RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+ rel, relend, howto, contents);
- 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 (info->relocatable)
+ continue;
+
+ if (h != NULL)
+ name = h->root.root.string;
+ else
+ {
+ name = (bfd_elf_string_from_elf_section
+ (input_bfd, symtab_hdr->sh_link, sym->st_name));
+ if (name == NULL || *name == '\0')
+ name = bfd_section_name (input_bfd, sec);
}
switch (ELF32_R_TYPE (rel->r_info))
if (r != bfd_reloc_ok)
{
- const char * msg = (const char *) NULL;
+ const char * msg = 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);
+ (info, (h ? &h->root : NULL), name, howto->name,
+ (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
break;
case bfd_reloc_undefined:
/* This must exist if dynobj is ever set. */
static bfd_boolean
-xstormy16_elf_finish_dynamic_sections (abfd, info)
- bfd *abfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info;
+xstormy16_elf_finish_dynamic_sections (bfd *abfd ATTRIBUTE_UNUSED,
+ struct bfd_link_info *info)
{
bfd *dynobj;
asection *splt;
&& (splt = bfd_get_section_by_name (dynobj, ".plt")) != NULL)
{
bfd_byte *contents = splt->contents;
- unsigned int i, size = splt->_raw_size;
+ unsigned int i, size = splt->size;
+
for (i = 0; i < size; i += 4)
{
unsigned int x = bfd_get_32 (dynobj, contents + i);
+
BFD_ASSERT (x != 0);
}
}
relocation. */
static asection *
-xstormy16_elf_gc_mark_hook (sec, info, rel, h, sym)
- asection * sec;
- struct bfd_link_info * info ATTRIBUTE_UNUSED;
- Elf_Internal_Rela * rel;
- struct elf_link_hash_entry * h;
- Elf_Internal_Sym * sym;
+xstormy16_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_XSTORMY16_GNU_VTINHERIT:
- case R_XSTORMY16_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;
-
- default:
- break;
- }
- }
- }
- else
- 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
-xstormy16_elf_gc_sweep_hook (abfd, info, sec, relocs)
- bfd * abfd ATTRIBUTE_UNUSED;
- struct bfd_link_info * info ATTRIBUTE_UNUSED;
- asection * sec ATTRIBUTE_UNUSED;
- const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED;
-{
- return TRUE;
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_XSTORMY16_GNU_VTINHERIT:
+ case R_XSTORMY16_GNU_VTENTRY:
+ return NULL;
+ }
+
+ return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
}
\f
#define ELF_ARCH bfd_arch_xstormy16
#define elf_info_to_howto xstormy16_info_to_howto_rela
#define elf_backend_relocate_section xstormy16_elf_relocate_section
#define elf_backend_gc_mark_hook xstormy16_elf_gc_mark_hook
-#define elf_backend_gc_sweep_hook xstormy16_elf_gc_sweep_hook
#define elf_backend_check_relocs xstormy16_elf_check_relocs
#define elf_backend_always_size_sections \
xstormy16_elf_always_size_sections
+#define elf_backend_omit_section_dynsym \
+ ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
#define elf_backend_finish_dynamic_sections \
xstormy16_elf_finish_dynamic_sections
#define elf_backend_rela_normal 1
#define bfd_elf32_bfd_reloc_type_lookup xstormy16_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup \
+ xstormy16_reloc_name_lookup
#define bfd_elf32_bfd_relax_section xstormy16_elf_relax_section
#include "elf32-target.h"