/* 32-bit ELF support for S+core.
- Copyright 2006 Free Software Foundation, Inc.
+ Copyright 2006, 2007 Free Software Foundation, Inc.
Contributed by
Mei Ligang (ligang@sunnorth.com.cn)
Pei-Lin Tsai (pltsai@sunplus.com)
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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
+ 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 "libiberty.h"
#include "elf-bfd.h"
char **error_message ATTRIBUTE_UNUSED)
{
bfd_vma addend = 0, offset = 0;
- unsigned long val;
- unsigned long hi16_offset, hi16_value, uvalue;
+ signed long val;
+ signed long hi16_offset, hi16_value, uvalue;
hi16_value = bfd_get_32 (abfd, hi16_rel_addr);
hi16_offset = ((((hi16_value >> 16) & 0x3) << 15) | (hi16_value & 0x7fff)) >> 1;
if (reloc_entry->address > input_section->size)
return bfd_reloc_outofrange;
uvalue = ((hi16_offset << 16) | (offset & 0xffff)) + val;
- hi16_offset = (uvalue >> 16) & 0x7fff;
+ if ((uvalue > -0x8000) && (uvalue < 0x7fff))
+ hi16_offset = 0;
+ else
+ hi16_offset = (uvalue >> 16) & 0x7fff;
hi16_value = (hi16_value & ~0x37fff) | (hi16_offset & 0x7fff) | ((hi16_offset << 1) & 0x30000);
bfd_put_32 (abfd, hi16_value, hi16_rel_addr);
offset = (uvalue & 0xffff) << 1;
sreloc = bfd_get_section_by_name (dynobj, dname);
if (sreloc == NULL && create_p)
{
- sreloc = bfd_make_section (dynobj, dname);
+ sreloc = bfd_make_section_with_flags (dynobj, dname,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED
+ | SEC_READONLY));
if (sreloc == NULL
- || ! bfd_set_section_flags (dynobj, sreloc,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_LINKER_CREATED
- | SEC_READONLY))
- || ! bfd_set_section_alignment (dynobj, sreloc, SCORE_ELF_LOG_FILE_ALIGN (dynobj)))
+ || ! bfd_set_section_alignment (dynobj, sreloc,
+ SCORE_ELF_LOG_FILE_ALIGN (dynobj)))
return NULL;
}
-
- return sreloc;
+ return sreloc;
}
static void
struct bfd_link_info *info,
const Elf_Internal_Rela *rel,
struct score_elf_link_hash_entry *h,
- asection *sec, bfd_vma symbol,
+ bfd_vma symbol,
bfd_vma *addendp, asection *input_section)
{
Elf_Internal_Rela outrel[3];
}
else
{
- if (sec != NULL && bfd_is_abs_section (sec))
- indx = 0;
- else if (sec == NULL || sec->owner == NULL)
- {
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
- else
- {
- indx = elf_section_data (sec->output_section)->dynindx;
- if (indx == 0)
- abort ();
- }
-
- /* Instead of generating a relocation using the section
- symbol, we may as well make it a fully relative
- relocation. We want to avoid generating relocations to
- local symbols because we used to generate them
- incorrectly, without adding the original symbol value,
- which is mandated by the ABI for section symbols. In
- order to give dynamic loaders and applications time to
- phase out the incorrect use, we refrain from emitting
- section-relative relocations. It's not like they're
- useful, after all. This should be a bit more efficient
- as well. */
- /* ??? Although this behavior is compatible with glibc's ld.so,
- the ABI says that relocations against STN_UNDEF should have
- a symbol value of 0. Irix rld honors this, so relocations
- against STN_UNDEF have no effect. */
+ indx = 0;
defined_p = TRUE;
}
/* We have to use an alignment of 2**4 here because this is hardcoded
in the function stub generation and in the linker script. */
- s = bfd_make_section (abfd, ".got");
- if (s == NULL
- || ! bfd_set_section_flags (abfd, s, flags)
+ s = bfd_make_section_with_flags (abfd, ".got", flags);
+ if (s == NULL
|| ! bfd_set_section_alignment (abfd, s, 4))
return FALSE;
Elf_Internal_Rela *relocs,
bfd_vma symbol,
struct bfd_link_info *info,
- asection *sym_sec,
const char *sym_name ATTRIBUTE_UNUSED,
int sym_flags ATTRIBUTE_UNUSED,
struct score_elf_link_hash_entry *h,
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
rel_addr = (input_section->output_section->vma + input_section->output_offset + rel->r_offset);
-
- /* If the start address has been set, then set the EF_SCORE_HASENTRY
- flag. Setting this more than once is redundant, but the cost is
- not too high, and it keeps the code simple.
- The test is done here, rather than somewhere else, because the
- start address is only set just before the final link commences.
- Note - if the user deliberately sets a start address of 0, the flag will not be set. */
- if (bfd_get_start_address (output_bfd) != 0)
- elf_elfheader (output_bfd)->e_flags |= EF_SCORE_HASENTRY;
+ local_p = score_elf_local_relocation_p (input_bfd, rel, local_sections, TRUE);
if (r_type == R_SCORE_GOT15)
{
const struct elf_backend_data *bed;
bfd_vma lo_value = 0;
- addend = (bfd_get_32 (input_bfd, hit_data) >> howto->bitpos) & howto->src_mask;
-
bed = get_elf_backend_data (output_bfd);
relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel;
lo16_rel = score_elf_next_relocation (input_bfd, R_SCORE_GOT_LO16, rel, relend);
- if (lo16_rel != NULL)
+ if ((local_p) && (lo16_rel != NULL))
{
- lo_value = (bfd_get_32 (input_bfd, contents + lo16_rel->r_offset) >> howto->bitpos)
- & howto->src_mask;
+ bfd_vma tmp = 0;
+ tmp = bfd_get_32 (input_bfd, contents + lo16_rel->r_offset);
+ lo_value = (((tmp >> 16) & 0x3) << 14) | ((tmp & 0x7fff) >> 1);
}
- addend = (addend << 16) + lo_value;
+ addend = lo_value;
}
else
{
addend = (bfd_get_32 (input_bfd, hit_data) >> howto->bitpos) & howto->src_mask;
}
- local_p = score_elf_local_relocation_p (input_bfd, rel, local_sections, TRUE);
-
/* If we haven't already determined the GOT offset, or the GP value,
and we're going to need it, get it now. */
switch (r_type)
case R_SCORE_GOT15:
if (!local_p)
{
- g = score_elf_global_got_index (elf_hash_table (info)->dynobj,
- (struct elf_link_hash_entry *) h);
- }
+ g = score_elf_global_got_index (elf_hash_table (info)->dynobj,
+ (struct elf_link_hash_entry *) h);
+ if ((! elf_hash_table(info)->dynamic_sections_created
+ || (info->shared
+ && (info->symbolic || h->root.dynindx == -1)
+ && h->root.def_regular)))
+ {
+ /* This is a static link or a -Bsymbolic link. The
+ symbol is defined locally, or was forced to be local.
+ We must initialize this entry in the GOT. */
+ bfd *tmpbfd = elf_hash_table (info)->dynobj;
+ asection *sgot = score_elf_got_section (tmpbfd, FALSE);
+ bfd_put_32 (tmpbfd, value, sgot->contents + g);
+ }
+ }
else if (r_type == R_SCORE_GOT15 || r_type == R_SCORE_CALL15)
{
/* There's no need to create a local GOT entry here; the
to the dynamic linker. */
value = addend;
if (!score_elf_create_dynamic_relocation (output_bfd, info, rel, h,
- sym_sec, symbol, &value,
+ symbol, &value,
input_section))
return bfd_reloc_undefined;
}
if ((long) value > 0x3fff || (long) value < -0x4000)
return bfd_reloc_overflow;
- bfd_put_16 (input_bfd, value, hit_data + 2);
+
+ addend = bfd_get_32 (input_bfd, hit_data);
+ value = (addend & ~howto->dst_mask) | (value & howto->dst_mask);
+ bfd_put_32 (input_bfd, value, hit_data);
return bfd_reloc_ok;
case R_SCORE_GPREL32:
case R_SCORE_GOT_LO16:
addend = bfd_get_32 (input_bfd, hit_data);
- value = ((((addend >> 16) & 0x3) << 15) | (addend & 0x7fff)) >> 1;
+ value = (((addend >> 16) & 0x3) << 14) | ((addend & 0x7fff) >> 1);
value += symbol;
- offset = (value & 0xffff) << 1;
- value = (addend & (~(howto->dst_mask))) | (offset & 0x7fff) | ((offset << 1) & 0x30000);
+ value = (addend & (~(howto->dst_mask))) | ((value & 0x3fff) << 1)
+ | (((value >> 14) & 0x3) << 16);
bfd_put_32 (input_bfd, value, hit_data);
return bfd_reloc_ok;
size_t extsymoff;
bfd_boolean gp_disp_p = FALSE;
-#ifndef USE_REL
- if (info->relocatable)
- return TRUE;
-#endif
-
/* Sort dynsym. */
if (elf_hash_table (info)->dynamic_sections_created)
{
_bfd_score_info_to_howto (input_bfd, &bfd_reloc, (Elf_Internal_Rela *) rel);
howto = bfd_reloc.howto;
- if (info->relocatable)
- {
- /* This is a relocatable 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];
- score_elf_add_to_rel (input_bfd, contents + rel->r_offset,
- howto, (bfd_signed_vma) (sec->output_offset + sym->st_value));
- }
- }
- continue;
- }
-
- /* This is a final link. */
h = NULL;
sym = NULL;
sec = NULL;
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
- relocation = (sec->output_section->vma + sec->output_offset + sym->st_value);
-
- if ((sec->flags & SEC_MERGE) && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ relocation = (sec->output_section->vma
+ + sec->output_offset
+ + sym->st_value);
+ name = bfd_elf_sym_name (input_bfd, symtab_hdr, sym, sec);
+
+ if (!info->relocatable
+ && (sec->flags & SEC_MERGE) != 0
+ && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
{
asection *msec;
bfd_vma addend, value;
| (offset & 0x7fff) | ((offset << 1) & 0x30000);
bfd_put_32 (input_bfd, value, contents + rel->r_offset);
break;
+ case R_SCORE_GOT_LO16:
+ value = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ addend = (((value >> 16) & 0x3) << 14) | ((value & 0x7fff) >> 1);
+ msec = sec;
+ addend = _bfd_elf_rel_local_sym (output_bfd, sym, &msec, addend) - relocation;
+ addend += msec->output_section->vma + msec->output_offset;
+ value = (value & (~(howto->dst_mask))) | ((addend & 0x3fff) << 1)
+ | (((addend >> 14) & 0x3) << 16);
+
+ bfd_put_32 (input_bfd, value, contents + rel->r_offset);
+ break;
default:
value = bfd_get_32 (input_bfd, contents + rel->r_offset);
/* Get the (signed) value from the instruction. */
BFD_ASSERT (bfd_get_section_by_name (output_bfd, ".dynamic") == NULL);
relocation = 0;
}
- else
+ else if (!info->relocatable)
{
if (! ((*info->callbacks->undefined_symbol)
(info, h->root.root.root.string, input_bfd,
}
}
- if (h == NULL)
+ 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)
{
- 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);
+ /* This is a relocatable 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 (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ score_elf_add_to_rel (input_bfd, contents + rel->r_offset,
+ howto, (bfd_signed_vma) sec->output_offset);
+ continue;
}
r = score_elf_final_link_relocate (howto, input_bfd, output_bfd,
input_section, contents, rel, relocs,
- relocation, info, sec, name,
+ relocation, info, name,
(h ? ELF_ST_TYPE ((unsigned int)h->root.root.type) :
ELF_ST_TYPE ((unsigned int)sym->st_info)), h, local_sections,
gp_disp_p);
/* Create .stub section. */
if (bfd_get_section_by_name (abfd, SCORE_ELF_STUB_SECTION_NAME) == NULL)
{
- s = bfd_make_section (abfd, SCORE_ELF_STUB_SECTION_NAME);
+ s = bfd_make_section_with_flags (abfd, SCORE_ELF_STUB_SECTION_NAME,
+ flags | SEC_CODE);
if (s == NULL
- || !bfd_set_section_flags (abfd, s, flags | SEC_CODE)
|| !bfd_set_section_alignment (abfd, s, 2))
return FALSE;
}
static bfd_boolean
-_bfd_score_elf_write_section (bfd *output_bfd, asection *sec, bfd_byte *contents)
+_bfd_score_elf_write_section (bfd *output_bfd,
+ struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
+ asection *sec, bfd_byte *contents)
{
bfd_byte *to, *from, *end;
int i;
return FALSE;
}
-/* This function discover the section a particular relocation refers to.
- Return the section that should be marked against GC for a given relocation. */
+/* Return the section that should be marked against GC for a given
+ relocation. */
static asection *
_bfd_score_elf_gc_mark_hook (asection *sec,
- struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ 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_SCORE_GNU_VTINHERIT:
- case R_SCORE_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);
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_SCORE_GNU_VTINHERIT:
+ case R_SCORE_GNU_VTENTRY:
+ return NULL;
+ }
- return NULL;
+ return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
}
/* Support for core dump NOTE sections. */
return NULL;
}
+static reloc_howto_type *
+elf32_score_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < (sizeof (elf32_score_howto_table)
+ / sizeof (elf32_score_howto_table[0]));
+ i++)
+ if (elf32_score_howto_table[i].name != NULL
+ && strcasecmp (elf32_score_howto_table[i].name, r_name) == 0)
+ return &elf32_score_howto_table[i];
+
+ return NULL;
+}
+
/* Create a score elf linker hash table. */
static struct bfd_link_hash_table *
#define ELF_MACHINE_CODE EM_SCORE
#define ELF_MAXPAGESIZE 0x8000
-#define elf_info_to_howto 0
-#define elf_info_to_howto_rel _bfd_score_info_to_howto
-#define elf_backend_relocate_section _bfd_score_elf_relocate_section
-#define elf_backend_check_relocs _bfd_score_elf_check_relocs
-#define elf_backend_add_symbol_hook _bfd_score_elf_add_symbol_hook
-#define elf_backend_symbol_processing _bfd_score_elf_symbol_processing
-#define elf_backend_link_output_symbol_hook _bfd_score_elf_link_output_symbol_hook
-#define elf_backend_section_from_bfd_section _bfd_score_elf_section_from_bfd_section
-#define elf_backend_adjust_dynamic_symbol _bfd_score_elf_adjust_dynamic_symbol
-#define elf_backend_always_size_sections _bfd_score_elf_always_size_sections
-#define elf_backend_size_dynamic_sections _bfd_score_elf_size_dynamic_sections
-#define elf_backend_create_dynamic_sections _bfd_score_elf_create_dynamic_sections
-#define elf_backend_finish_dynamic_symbol _bfd_score_elf_finish_dynamic_symbol
-#define elf_backend_finish_dynamic_sections _bfd_score_elf_finish_dynamic_sections
-#define elf_backend_fake_sections _bfd_score_elf_fake_sections
-#define elf_backend_section_processing _bfd_score_elf_section_processing
-#define elf_backend_write_section _bfd_score_elf_write_section
-#define elf_backend_copy_indirect_symbol _bfd_score_elf_copy_indirect_symbol
-#define elf_backend_hide_symbol _bfd_score_elf_hide_symbol
-#define elf_backend_discard_info _bfd_score_elf_discard_info
-#define elf_backend_ignore_discarded_relocs _bfd_score_elf_ignore_discarded_relocs
-#define elf_backend_gc_mark_hook _bfd_score_elf_gc_mark_hook
-#define elf_backend_grok_prstatus _bfd_score_elf_grok_prstatus
-#define elf_backend_grok_psinfo _bfd_score_elf_grok_psinfo
-#define elf_backend_can_gc_sections 1
-#define elf_backend_want_plt_sym 0
-#define elf_backend_got_header_size (4 * SCORE_RESERVED_GOTNO)
-#define elf_backend_plt_header_size 0
-#define elf_backend_collect TRUE
-#define elf_backend_type_change_ok TRUE
-
-#define bfd_elf32_bfd_reloc_type_lookup elf32_score_reloc_type_lookup
-#define bfd_elf32_bfd_link_hash_table_create elf32_score_link_hash_table_create
-#define bfd_elf32_bfd_print_private_bfd_data elf32_score_print_private_bfd_data
-#define bfd_elf32_bfd_merge_private_bfd_data elf32_score_merge_private_bfd_data
-#define bfd_elf32_new_section_hook elf32_score_new_section_hook
+#define elf_info_to_howto 0
+#define elf_info_to_howto_rel _bfd_score_info_to_howto
+#define elf_backend_relocate_section _bfd_score_elf_relocate_section
+#define elf_backend_check_relocs _bfd_score_elf_check_relocs
+#define elf_backend_add_symbol_hook _bfd_score_elf_add_symbol_hook
+#define elf_backend_symbol_processing _bfd_score_elf_symbol_processing
+#define elf_backend_link_output_symbol_hook \
+ _bfd_score_elf_link_output_symbol_hook
+#define elf_backend_section_from_bfd_section \
+ _bfd_score_elf_section_from_bfd_section
+#define elf_backend_adjust_dynamic_symbol \
+ _bfd_score_elf_adjust_dynamic_symbol
+#define elf_backend_always_size_sections \
+ _bfd_score_elf_always_size_sections
+#define elf_backend_size_dynamic_sections \
+ _bfd_score_elf_size_dynamic_sections
+#define elf_backend_omit_section_dynsym \
+ ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true)
+#define elf_backend_create_dynamic_sections \
+ _bfd_score_elf_create_dynamic_sections
+#define elf_backend_finish_dynamic_symbol \
+ _bfd_score_elf_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_sections \
+ _bfd_score_elf_finish_dynamic_sections
+#define elf_backend_fake_sections _bfd_score_elf_fake_sections
+#define elf_backend_section_processing _bfd_score_elf_section_processing
+#define elf_backend_write_section _bfd_score_elf_write_section
+#define elf_backend_copy_indirect_symbol _bfd_score_elf_copy_indirect_symbol
+#define elf_backend_hide_symbol _bfd_score_elf_hide_symbol
+#define elf_backend_discard_info _bfd_score_elf_discard_info
+#define elf_backend_ignore_discarded_relocs \
+ _bfd_score_elf_ignore_discarded_relocs
+#define elf_backend_gc_mark_hook _bfd_score_elf_gc_mark_hook
+#define elf_backend_grok_prstatus _bfd_score_elf_grok_prstatus
+#define elf_backend_grok_psinfo _bfd_score_elf_grok_psinfo
+#define elf_backend_can_gc_sections 1
+#define elf_backend_want_plt_sym 0
+#define elf_backend_got_header_size (4 * SCORE_RESERVED_GOTNO)
+#define elf_backend_plt_header_size 0
+#define elf_backend_collect TRUE
+#define elf_backend_type_change_ok TRUE
+
+#define bfd_elf32_bfd_reloc_type_lookup elf32_score_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup \
+ elf32_score_reloc_name_lookup
+#define bfd_elf32_bfd_link_hash_table_create elf32_score_link_hash_table_create
+#define bfd_elf32_bfd_print_private_bfd_data elf32_score_print_private_bfd_data
+#define bfd_elf32_bfd_merge_private_bfd_data elf32_score_merge_private_bfd_data
+#define bfd_elf32_new_section_hook elf32_score_new_section_hook
#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff