/* Matsushita 10200 specific support for 32-bit ELF
- Copyright 1996, 1997, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+ Copyright (C) 1996-2020 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"
-static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
- PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
-static void mn10200_info_to_howto
- PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
-static boolean mn10200_elf_relax_delete_bytes
- PARAMS ((bfd *, asection *, bfd_vma, int));
-static boolean mn10200_elf_symbol_address_p
- PARAMS ((bfd *, asection *, Elf32_External_Sym *, bfd_vma));
-static bfd_reloc_status_type mn10200_elf_final_link_relocate
- PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *,
- bfd_byte *, bfd_vma, bfd_vma, bfd_vma,
- struct bfd_link_info *, asection *, int));
-static boolean mn10200_elf_relocate_section
-PARAMS (( bfd *, struct bfd_link_info *, bfd *, asection *,
- bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *,
- asection **));
-static boolean mn10200_elf_relax_section
- PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
-static bfd_byte * mn10200_elf_get_relocated_section_contents
- PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
- bfd_byte *, boolean, asymbol **));
-
-/* We have to use RELA instructions since md_apply_fix3 in the assembler
- does absolutely nothing. */
-#define USE_RELA
-
-enum reloc_type {
+static bfd_boolean
+mn10200_elf_relax_delete_bytes (bfd *, asection *, bfd_vma, int);
+static bfd_boolean
+mn10200_elf_symbol_address_p (bfd *, asection *, Elf_Internal_Sym *, bfd_vma);
+
+enum reloc_type
+{
R_MN10200_NONE = 0,
R_MN10200_32,
R_MN10200_16,
R_MN10200_MAX
};
-static reloc_howto_type elf_mn10200_howto_table[] = {
+static reloc_howto_type elf_mn10200_howto_table[] =
+{
/* Dummy relocation. Does nothing. */
HOWTO (R_MN10200_NONE,
0,
- 2,
- 16,
- false,
+ 3,
0,
- complain_overflow_bitfield,
+ FALSE,
+ 0,
+ complain_overflow_dont,
bfd_elf_generic_reloc,
"R_MN10200_NONE",
- false,
+ FALSE,
0,
0,
- false),
+ FALSE),
/* Standard 32 bit reloc. */
HOWTO (R_MN10200_32,
0,
2,
32,
- false,
+ FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_MN10200_32",
- false,
+ FALSE,
0xffffffff,
0xffffffff,
- false),
+ FALSE),
/* Standard 16 bit reloc. */
HOWTO (R_MN10200_16,
0,
1,
16,
- false,
+ FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_MN10200_16",
- false,
+ FALSE,
0xffff,
0xffff,
- false),
+ FALSE),
/* Standard 8 bit reloc. */
HOWTO (R_MN10200_8,
0,
0,
8,
- false,
+ FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_MN10200_8",
- false,
+ FALSE,
0xff,
0xff,
- false),
+ FALSE),
/* Standard 24 bit reloc. */
HOWTO (R_MN10200_24,
0,
2,
24,
- false,
+ FALSE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_MN10200_24",
- false,
+ FALSE,
0xffffff,
0xffffff,
- false),
+ FALSE),
/* Simple 8 pc-relative reloc. */
HOWTO (R_MN10200_PCREL8,
0,
0,
8,
- true,
+ TRUE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_MN10200_PCREL8",
- false,
+ FALSE,
0xff,
0xff,
- true),
+ TRUE),
/* Simple 16 pc-relative reloc. */
HOWTO (R_MN10200_PCREL16,
0,
1,
16,
- true,
+ TRUE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_MN10200_PCREL16",
- false,
+ FALSE,
0xffff,
0xffff,
- true),
+ TRUE),
/* Simple 32bit pc-relative reloc with a 1 byte adjustment
to get the pc-relative offset correct. */
HOWTO (R_MN10200_PCREL24,
0,
2,
24,
- true,
+ TRUE,
0,
complain_overflow_bitfield,
bfd_elf_generic_reloc,
"R_MN10200_PCREL24",
- false,
+ FALSE,
0xffffff,
0xffffff,
- true),
+ TRUE),
};
-struct mn10200_reloc_map {
+struct mn10200_reloc_map
+{
bfd_reloc_code_real_type bfd_reloc_val;
unsigned char elf_reloc_val;
};
-static const struct mn10200_reloc_map mn10200_reloc_map[] = {
+static const struct mn10200_reloc_map mn10200_reloc_map[] =
+{
{ BFD_RELOC_NONE , R_MN10200_NONE , },
{ BFD_RELOC_32 , R_MN10200_32 , },
{ BFD_RELOC_16 , R_MN10200_16 , },
};
static reloc_howto_type *
-bfd_elf32_bfd_reloc_type_lookup (abfd, code)
- bfd *abfd ATTRIBUTE_UNUSED;
- bfd_reloc_code_real_type code;
+bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
{
unsigned int i;
return NULL;
}
+static reloc_howto_type *
+bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < (sizeof (elf_mn10200_howto_table)
+ / sizeof (elf_mn10200_howto_table[0]));
+ i++)
+ if (elf_mn10200_howto_table[i].name != NULL
+ && strcasecmp (elf_mn10200_howto_table[i].name, r_name) == 0)
+ return &elf_mn10200_howto_table[i];
+
+ return NULL;
+}
+
/* Set the howto pointer for an MN10200 ELF reloc. */
-static void
-mn10200_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *cache_ptr;
- Elf32_Internal_Rela *dst;
+static bfd_boolean
+mn10200_info_to_howto (bfd *abfd,
+ arelent *cache_ptr,
+ Elf_Internal_Rela *dst)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
- BFD_ASSERT (r_type < (unsigned int) R_MN10200_MAX);
+ if (r_type >= (unsigned int) R_MN10200_MAX)
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+ abfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
cache_ptr->howto = &elf_mn10200_howto_table[r_type];
+ return cache_ptr->howto != NULL;
}
/* Perform a relocation as part of a final link. */
static bfd_reloc_status_type
-mn10200_elf_final_link_relocate (howto, input_bfd, output_bfd,
- input_section, contents, offset, value,
- addend, info, sym_sec, is_local)
- reloc_howto_type *howto;
- bfd *input_bfd;
- bfd *output_bfd ATTRIBUTE_UNUSED;
- asection *input_section;
- bfd_byte *contents;
- bfd_vma offset;
- bfd_vma value;
- bfd_vma addend;
- struct bfd_link_info *info ATTRIBUTE_UNUSED;
- asection *sym_sec ATTRIBUTE_UNUSED;
- int is_local ATTRIBUTE_UNUSED;
+mn10200_elf_final_link_relocate (reloc_howto_type *howto,
+ bfd *input_bfd,
+ bfd *output_bfd ATTRIBUTE_UNUSED,
+ asection *input_section,
+ bfd_byte *contents,
+ bfd_vma offset,
+ bfd_vma value,
+ bfd_vma addend,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ asection *sym_sec ATTRIBUTE_UNUSED,
+ int is_local ATTRIBUTE_UNUSED)
{
unsigned long r_type = howto->type;
bfd_byte *hit_data = contents + offset;
}
\f
/* Relocate an MN10200 ELF section. */
-static boolean
-mn10200_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;
+static bfd_boolean
+mn10200_elf_relocate_section (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;
r_type = ELF32_R_TYPE (rel->r_info);
howto = elf_mn10200_howto_table + r_type;
- 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. */
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);
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
}
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;
- 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;
- }
+ bfd_boolean unresolved_reloc, warned, ignored;
+
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned, ignored);
}
+ if (sec != NULL && discarded_section (sec))
+ RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+ rel, 1, relend, howto, 0, contents);
+
+ if (bfd_link_relocatable (info))
+ continue;
+
r = mn10200_elf_final_link_relocate (howto, input_bfd, output_bfd,
input_section,
contents, rel->r_offset,
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);
+ name = bfd_section_name (sec);
}
switch (r)
{
case bfd_reloc_overflow:
- if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset)))
- return false;
+ (*info->callbacks->reloc_overflow)
+ (info, (h ? &h->root : NULL), name, howto->name,
+ (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
break;
case bfd_reloc_undefined:
- if (! ((*info->callbacks->undefined_symbol)
- (info, name, input_bfd, input_section,
- rel->r_offset, true)))
- return false;
+ (*info->callbacks->undefined_symbol) (info, name, input_bfd,
+ input_section,
+ rel->r_offset, TRUE);
break;
case bfd_reloc_outofrange:
/* fall through */
common_error:
- if (!((*info->callbacks->warning)
- (info, msg, name, input_bfd, input_section,
- rel->r_offset)))
- return false;
+ (*info->callbacks->warning) (info, msg, name, input_bfd,
+ input_section, rel->r_offset);
break;
}
}
}
- return true;
+ return TRUE;
+}
+
+/* Delete some bytes from a section while relaxing. */
+
+static bfd_boolean
+mn10200_elf_relax_delete_bytes (bfd *abfd, asection *sec,
+ bfd_vma addr, int count)
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ unsigned int sec_shndx;
+ bfd_byte *contents;
+ Elf_Internal_Rela *irel, *irelend;
+ bfd_vma toaddr;
+ Elf_Internal_Sym *isym;
+ Elf_Internal_Sym *isymend;
+ struct elf_link_hash_entry **sym_hashes;
+ struct elf_link_hash_entry **end_hashes;
+ unsigned int symcount;
+
+ sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
+
+ contents = elf_section_data (sec)->this_hdr.contents;
+
+ toaddr = sec->size;
+
+ irel = elf_section_data (sec)->relocs;
+ irelend = irel + sec->reloc_count;
+
+ /* Actually delete the bytes. */
+ memmove (contents + addr, contents + addr + count,
+ (size_t) (toaddr - addr - count));
+ sec->size -= count;
+
+ /* Adjust all the relocs. */
+ for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
+ {
+ /* Get the new reloc address. */
+ if ((irel->r_offset > addr
+ && irel->r_offset < toaddr))
+ irel->r_offset -= count;
+ }
+
+ /* Adjust the local symbols defined in this section. */
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ isym = (Elf_Internal_Sym *) symtab_hdr->contents;
+ for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
+ {
+ if (isym->st_shndx == sec_shndx
+ && isym->st_value > addr
+ && isym->st_value < toaddr)
+ isym->st_value -= count;
+ }
+
+ /* Now adjust the global symbols defined in this section. */
+ symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
+ - symtab_hdr->sh_info);
+ sym_hashes = elf_sym_hashes (abfd);
+ end_hashes = sym_hashes + symcount;
+ for (; sym_hashes < end_hashes; sym_hashes++)
+ {
+ struct elf_link_hash_entry *sym_hash = *sym_hashes;
+ if ((sym_hash->root.type == bfd_link_hash_defined
+ || sym_hash->root.type == bfd_link_hash_defweak)
+ && sym_hash->root.u.def.section == sec
+ && sym_hash->root.u.def.value > addr
+ && sym_hash->root.u.def.value < toaddr)
+ {
+ sym_hash->root.u.def.value -= count;
+ }
+ }
+
+ return TRUE;
}
/* This function handles relaxing for the mn10200.
- There's quite a few relaxing opportunites available on the mn10200:
+ There are quite a few relaxing opportunities available on the mn10200:
- * jsr:24 -> jsr:16 2 bytes
+ * jsr:24 -> jsr:16 2 bytes
* jmp:24 -> jmp:16 2 bytes
* jmp:16 -> bra:8 1 byte
We don't handle imm16->imm8 or d16->d8 as they're very rare
and somewhat more difficult to support. */
-static boolean
-mn10200_elf_relax_section (abfd, sec, link_info, again)
- bfd *abfd;
- asection *sec;
- struct bfd_link_info *link_info;
- boolean *again;
+static bfd_boolean
+mn10200_elf_relax_section (bfd *abfd,
+ asection *sec,
+ struct bfd_link_info *link_info,
+ bfd_boolean *again)
{
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Rela *internal_relocs;
- Elf_Internal_Rela *free_relocs = NULL;
Elf_Internal_Rela *irel, *irelend;
bfd_byte *contents = NULL;
- bfd_byte *free_contents = NULL;
- Elf32_External_Sym *extsyms = NULL;
- Elf32_External_Sym *free_extsyms = NULL;
+ Elf_Internal_Sym *isymbuf = NULL;
/* Assume nothing changes. */
- *again = false;
+ *again = FALSE;
- /* We don't have to do anything for a relocateable link, if
+ /* We don't have to do anything for a relocatable link, if
this section does not have relocs, or if this is not a
code section. */
- if (link_info->relocateable
+ if (bfd_link_relocatable (link_info)
|| (sec->flags & SEC_RELOC) == 0
|| sec->reloc_count == 0
|| (sec->flags & SEC_CODE) == 0)
- return true;
-
- /* If this is the first time we have been called for this section,
- initialize the cooked size. */
- if (sec->_cooked_size == 0)
- sec->_cooked_size = sec->_raw_size;
+ return TRUE;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
/* Get a copy of the native relocations. */
- internal_relocs = (_bfd_elf32_link_read_relocs
- (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL,
+ internal_relocs = (_bfd_elf_link_read_relocs
+ (abfd, sec, NULL, (Elf_Internal_Rela *) NULL,
link_info->keep_memory));
if (internal_relocs == NULL)
goto error_return;
- if (! link_info->keep_memory)
- free_relocs = internal_relocs;
/* Walk through them looking for relaxing opportunities. */
irelend = internal_relocs + sec->reloc_count;
else
{
/* Go get them off disk. */
- contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
- if (contents == NULL)
- goto error_return;
- free_contents = contents;
-
- if (! bfd_get_section_contents (abfd, sec, contents,
- (file_ptr) 0, sec->_raw_size))
+ if (!bfd_malloc_and_get_section (abfd, sec, &contents))
goto error_return;
}
}
- /* Read this BFD's symbols if we haven't done so already. */
- if (extsyms == NULL)
+ /* Read this BFD's local symbols if we haven't done so already. */
+ if (isymbuf == NULL && symtab_hdr->sh_info != 0)
{
- /* Get cached copy if it exists. */
- if (symtab_hdr->contents != NULL)
- extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
- else
- {
- /* Go get them off disk. */
- bfd_size_type amt = symtab_hdr->sh_size;
- extsyms = (Elf32_External_Sym *) bfd_malloc (amt);
- if (extsyms == NULL)
- goto error_return;
- free_extsyms = extsyms;
- if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (extsyms, amt, abfd) != amt)
- goto error_return;
- }
+ isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isymbuf == NULL)
+ isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+ symtab_hdr->sh_info, 0,
+ NULL, NULL, NULL);
+ if (isymbuf == NULL)
+ goto error_return;
}
/* Get the value of the symbol referred to by the reloc. */
if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info)
{
- Elf_Internal_Sym isym;
- asection *sym_sec;
-
/* A local symbol. */
- bfd_elf32_swap_symbol_in (abfd,
- extsyms + ELF32_R_SYM (irel->r_info),
- &isym);
+ Elf_Internal_Sym *isym;
+ asection *sym_sec;
- sym_sec = bfd_section_from_elf_index (abfd, isym.st_shndx);
- symval = (isym.st_value
+ isym = isymbuf + ELF32_R_SYM (irel->r_info);
+ if (isym->st_shndx == SHN_UNDEF)
+ sym_sec = bfd_und_section_ptr;
+ else if (isym->st_shndx == SHN_ABS)
+ sym_sec = bfd_abs_section_ptr;
+ else if (isym->st_shndx == SHN_COMMON)
+ sym_sec = bfd_com_section_ptr;
+ else
+ sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
+ symval = (isym->st_value
+ sym_sec->output_section->vma
+ sym_sec->output_offset);
}
&& h->root.type != bfd_link_hash_defweak)
{
/* This appears to be a reference to an undefined
- symbol. Just ignore it--it will be caught by the
- regular reloc processing. */
+ symbol. Just ignore it--it will be caught by the
+ regular reloc processing. */
continue;
}
/* Note that we've changed the relocs, section contents, etc. */
elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
+ symtab_hdr->contents = (unsigned char *) isymbuf;
/* Fix the opcode. */
if (code == 0xe0)
/* That will change things, so, we should relax again.
Note that this is not required, and it may be slow. */
- *again = true;
+ *again = TRUE;
}
}
/* Note that we've changed the relocs, section contents, etc. */
elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
+ symtab_hdr->contents = (unsigned char *) isymbuf;
/* Fix the opcode. */
bfd_put_8 (abfd, 0xea, contents + irel->r_offset - 1);
/* That will change things, so, we should relax again.
Note that this is not required, and it may be slow. */
- *again = true;
+ *again = TRUE;
}
}
value += irel->r_addend;
/* Do nothing if this reloc is the last byte in the section. */
- if (irel->r_offset == sec->_cooked_size)
+ if (irel->r_offset == sec->size)
continue;
/* See if the next instruction is an unconditional pc-relative
/* We also have to be sure there is no symbol/label
at the unconditional branch. */
- if (mn10200_elf_symbol_address_p (abfd, sec, extsyms,
+ if (mn10200_elf_symbol_address_p (abfd, sec, isymbuf,
irel->r_offset + 1))
continue;
/* Note that we've changed the relocs, section contents, etc. */
elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
+ symtab_hdr->contents = (unsigned char *) isymbuf;
/* Reverse the condition of the first branch. */
switch (code)
/* That will change things, so, we should relax again.
Note that this is not required, and it may be slow. */
- *again = true;
+ *again = TRUE;
}
/* Try to turn a 24bit immediate, displacement or absolute address
if (value & 0x8000)
continue;
- /* Note that we've changed the reldection contents, etc. */
+ /* Note that we've changed the relocation contents, etc. */
elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
+ symtab_hdr->contents = (unsigned char *) isymbuf;
/* Fix the opcode. */
bfd_put_8 (abfd, 0xf8 + (code & 0x03),
/* That will change things, so, we should relax again.
Note that this is not required, and it may be slow. */
- *again = true;
+ *again = TRUE;
break;
/* mov imm24,an -> mov imm16,an
case 0x40:
case 0x44:
case 0xc8:
- /* Note that we've changed the reldection contents, etc. */
+ /* Note that we've changed the relocation contents, etc. */
elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
+ symtab_hdr->contents = (unsigned char *) isymbuf;
if ((code & 0xfc) == 0x74)
code = 0xdc + (code & 0x03);
/* That will change things, so, we should relax again.
Note that this is not required, and it may be slow. */
- *again = true;
+ *again = TRUE;
break;
/* cmp imm24,dn -> cmp imm16,dn
&& (value & 0x8000) != 0)
continue;
- /* Note that we've changed the reldection contents, etc. */
+ /* Note that we've changed the relocation contents, etc. */
elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
+ symtab_hdr->contents = (unsigned char *) isymbuf;
/* Fix the opcode. */
bfd_put_8 (abfd, 0xf7, contents + irel->r_offset - 2);
/* That will change things, so, we should relax again.
Note that this is not required, and it may be slow. */
- *again = true;
+ *again = TRUE;
break;
/* movb (abs24),dn ->movbu (abs16),dn extxb bn */
case 0xc4:
/* Note that we've changed the reldection contents, etc. */
elf_section_data (sec)->relocs = internal_relocs;
- free_relocs = NULL;
-
elf_section_data (sec)->this_hdr.contents = contents;
- free_contents = NULL;
-
- symtab_hdr->contents = (bfd_byte *) extsyms;
- free_extsyms = NULL;
+ symtab_hdr->contents = (unsigned char *) isymbuf;
bfd_put_8 (abfd, 0xcc + (code & 0x03),
contents + irel->r_offset - 2);
/* That will change things, so, we should relax again.
Note that this is not required, and it may be slow. */
- *again = true;
+ *again = TRUE;
break;
}
}
}
}
- if (free_relocs != NULL)
- {
- free (free_relocs);
- free_relocs = NULL;
- }
-
- if (free_contents != NULL)
+ if (isymbuf != NULL
+ && symtab_hdr->contents != (unsigned char *) isymbuf)
{
if (! link_info->keep_memory)
- free (free_contents);
+ free (isymbuf);
else
{
- /* Cache the section contents for elf_link_input_bfd. */
- elf_section_data (sec)->this_hdr.contents = contents;
+ /* Cache the symbols for elf_link_input_bfd. */
+ symtab_hdr->contents = (unsigned char *) isymbuf;
}
- free_contents = NULL;
}
- if (free_extsyms != NULL)
+ if (contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != contents)
{
if (! link_info->keep_memory)
- free (free_extsyms);
+ free (contents);
else
{
- /* Cache the symbols for elf_link_input_bfd. */
- symtab_hdr->contents = (unsigned char *) extsyms;
+ /* Cache the section contents for elf_link_input_bfd. */
+ elf_section_data (sec)->this_hdr.contents = contents;
}
- free_extsyms = NULL;
- }
-
- return true;
-
- error_return:
- if (free_relocs != NULL)
- free (free_relocs);
- if (free_contents != NULL)
- free (free_contents);
- if (free_extsyms != NULL)
- free (free_extsyms);
- return false;
-}
-
-/* Delete some bytes from a section while relaxing. */
-
-static boolean
-mn10200_elf_relax_delete_bytes (abfd, sec, addr, count)
- bfd *abfd;
- asection *sec;
- bfd_vma addr;
- int count;
-{
- Elf_Internal_Shdr *symtab_hdr;
- Elf32_External_Sym *extsyms;
- int shndx, index;
- bfd_byte *contents;
- Elf_Internal_Rela *irel, *irelend;
- Elf_Internal_Rela *irelalign;
- bfd_vma toaddr;
- Elf32_External_Sym *esym, *esymend;
- struct elf_link_hash_entry *sym_hash;
-
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- extsyms = (Elf32_External_Sym *) symtab_hdr->contents;
-
- shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
-
- contents = elf_section_data (sec)->this_hdr.contents;
-
- /* The deletion must stop at the next ALIGN reloc for an aligment
- power larger than the number of bytes we are deleting. */
-
- irelalign = NULL;
- toaddr = sec->_cooked_size;
-
- irel = elf_section_data (sec)->relocs;
- irelend = irel + sec->reloc_count;
-
- /* Actually delete the bytes. */
- memmove (contents + addr, contents + addr + count,
- (size_t) (toaddr - addr - count));
- sec->_cooked_size -= count;
-
- /* Adjust all the relocs. */
- for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
- {
- /* Get the new reloc address. */
- if ((irel->r_offset > addr
- && irel->r_offset < toaddr))
- irel->r_offset -= count;
}
- /* Adjust the local symbols defined in this section. */
- esym = extsyms;
- esymend = esym + symtab_hdr->sh_info;
- for (; esym < esymend; esym++)
- {
- Elf_Internal_Sym isym;
-
- bfd_elf32_swap_symbol_in (abfd, esym, &isym);
+ if (elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
- if (isym.st_shndx == shndx
- && isym.st_value > addr
- && isym.st_value < toaddr)
- {
- isym.st_value -= count;
- bfd_elf32_swap_symbol_out (abfd, &isym, esym);
- }
- }
+ return TRUE;
- /* Now adjust the global symbols defined in this section. */
- esym = extsyms + symtab_hdr->sh_info;
- esymend = extsyms + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym));
- for (index = 0; esym < esymend; esym++, index++)
- {
- Elf_Internal_Sym isym;
-
- bfd_elf32_swap_symbol_in (abfd, esym, &isym);
- sym_hash = elf_sym_hashes (abfd)[index];
- if (isym.st_shndx == shndx
- && ((sym_hash)->root.type == bfd_link_hash_defined
- || (sym_hash)->root.type == bfd_link_hash_defweak)
- && (sym_hash)->root.u.def.section == sec
- && (sym_hash)->root.u.def.value > addr
- && (sym_hash)->root.u.def.value < toaddr)
- {
- (sym_hash)->root.u.def.value -= count;
- }
- }
+ error_return:
+ if (symtab_hdr->contents != (unsigned char *) isymbuf)
+ free (isymbuf);
+ if (elf_section_data (sec)->this_hdr.contents != contents)
+ free (contents);
+ if (elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
- return true;
+ return FALSE;
}
-/* Return true if a symbol exists at the given address, else return
- false. */
-static boolean
-mn10200_elf_symbol_address_p (abfd, sec, extsyms, addr)
- bfd *abfd;
- asection *sec;
- Elf32_External_Sym *extsyms;
- bfd_vma addr;
+/* Return TRUE if a symbol exists at the given address, else return
+ FALSE. */
+static bfd_boolean
+mn10200_elf_symbol_address_p (bfd *abfd,
+ asection *sec,
+ Elf_Internal_Sym *isym,
+ bfd_vma addr)
{
Elf_Internal_Shdr *symtab_hdr;
- int shndx;
- Elf32_External_Sym *esym, *esymend;
- struct elf_link_hash_entry **sym_hash, **sym_hash_end;
+ unsigned int sec_shndx;
+ Elf_Internal_Sym *isymend;
+ struct elf_link_hash_entry **sym_hashes;
+ struct elf_link_hash_entry **end_hashes;
+ unsigned int symcount;
- symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
+ sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
- /* Examine all the symbols. */
- esym = extsyms;
- esymend = esym + symtab_hdr->sh_info;
- for (; esym < esymend; esym++)
+ /* Examine all the local symbols. */
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ for (isymend = isym + symtab_hdr->sh_info; isym < isymend; isym++)
{
- Elf_Internal_Sym isym;
-
- bfd_elf32_swap_symbol_in (abfd, esym, &isym);
-
- if (isym.st_shndx == shndx
- && isym.st_value == addr)
- return true;
+ if (isym->st_shndx == sec_shndx
+ && isym->st_value == addr)
+ return TRUE;
}
- sym_hash = elf_sym_hashes (abfd);
- sym_hash_end = (sym_hash
- + (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
- - symtab_hdr->sh_info));
- for (; sym_hash < sym_hash_end; sym_hash++)
+ symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
+ - symtab_hdr->sh_info);
+ sym_hashes = elf_sym_hashes (abfd);
+ end_hashes = sym_hashes + symcount;
+ for (; sym_hashes < end_hashes; sym_hashes++)
{
- if (((*sym_hash)->root.type == bfd_link_hash_defined
- || (*sym_hash)->root.type == bfd_link_hash_defweak)
- && (*sym_hash)->root.u.def.section == sec
- && (*sym_hash)->root.u.def.value == addr)
- return true;
+ struct elf_link_hash_entry *sym_hash = *sym_hashes;
+ if ((sym_hash->root.type == bfd_link_hash_defined
+ || sym_hash->root.type == bfd_link_hash_defweak)
+ && sym_hash->root.u.def.section == sec
+ && sym_hash->root.u.def.value == addr)
+ return TRUE;
}
- return false;
+
+ return FALSE;
}
/* This is a version of bfd_generic_get_relocated_section_contents
which uses mn10200_elf_relocate_section. */
static bfd_byte *
-mn10200_elf_get_relocated_section_contents (output_bfd, link_info, link_order,
- data, relocateable, symbols)
- bfd *output_bfd;
- struct bfd_link_info *link_info;
- struct bfd_link_order *link_order;
- bfd_byte *data;
- boolean relocateable;
- asymbol **symbols;
+mn10200_elf_get_relocated_section_contents (bfd *output_bfd,
+ struct bfd_link_info *link_info,
+ struct bfd_link_order *link_order,
+ bfd_byte *data,
+ bfd_boolean relocatable,
+ asymbol **symbols)
{
Elf_Internal_Shdr *symtab_hdr;
asection *input_section = link_order->u.indirect.section;
bfd *input_bfd = input_section->owner;
asection **sections = NULL;
Elf_Internal_Rela *internal_relocs = NULL;
- Elf32_External_Sym *external_syms = NULL;
- Elf_Internal_Sym *internal_syms = NULL;
+ Elf_Internal_Sym *isymbuf = NULL;
/* We only need to handle the case of relaxing, or of having a
particular set of section contents, specially. */
- if (relocateable
+ if (relocatable
|| elf_section_data (input_section)->this_hdr.contents == NULL)
return bfd_generic_get_relocated_section_contents (output_bfd, link_info,
link_order, data,
- relocateable,
+ relocatable,
symbols);
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
memcpy (data, elf_section_data (input_section)->this_hdr.contents,
- (size_t) input_section->_raw_size);
+ (size_t) input_section->size);
if ((input_section->flags & SEC_RELOC) != 0
&& input_section->reloc_count > 0)
{
- Elf_Internal_Sym *isymp;
+ Elf_Internal_Sym *isym;
+ Elf_Internal_Sym *isymend;
asection **secpp;
- Elf32_External_Sym *esym, *esymend;
- bfd_size_type size;
-
- if (symtab_hdr->contents != NULL)
- external_syms = (Elf32_External_Sym *) symtab_hdr->contents;
- else
- {
- size = symtab_hdr->sh_info;
- size *= sizeof (Elf32_External_Sym);
- external_syms = (Elf32_External_Sym *) bfd_malloc (size);
- if (external_syms == NULL && size != 0)
- goto error_return;
- if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
- || bfd_bread (external_syms, size, input_bfd) != size)
- goto error_return;
- }
+ bfd_size_type amt;
- internal_relocs = (_bfd_elf32_link_read_relocs
- (input_bfd, input_section, (PTR) NULL,
- (Elf_Internal_Rela *) NULL, false));
+ internal_relocs = (_bfd_elf_link_read_relocs
+ (input_bfd, input_section, NULL,
+ (Elf_Internal_Rela *) NULL, FALSE));
if (internal_relocs == NULL)
goto error_return;
- size = symtab_hdr->sh_info;
- size *= sizeof (Elf_Internal_Sym);
- internal_syms = (Elf_Internal_Sym *) bfd_malloc (size);
- if (internal_syms == NULL && size != 0)
- goto error_return;
+ if (symtab_hdr->sh_info != 0)
+ {
+ isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isymbuf == NULL)
+ isymbuf = bfd_elf_get_elf_syms (input_bfd, symtab_hdr,
+ symtab_hdr->sh_info, 0,
+ NULL, NULL, NULL);
+ if (isymbuf == NULL)
+ goto error_return;
+ }
- size = symtab_hdr->sh_info;
- size *= sizeof (asection *);
- sections = (asection **) bfd_malloc (size);
- if (sections == NULL && size != 0)
+ amt = symtab_hdr->sh_info;
+ amt *= sizeof (asection *);
+ sections = (asection **) bfd_malloc (amt);
+ if (sections == NULL && amt != 0)
goto error_return;
- isymp = internal_syms;
- secpp = sections;
- esym = external_syms;
- esymend = esym + symtab_hdr->sh_info;
- for (; esym < esymend; ++esym, ++isymp, ++secpp)
+ isymend = isymbuf + symtab_hdr->sh_info;
+ for (isym = isymbuf, secpp = sections; isym < isymend; ++isym, ++secpp)
{
asection *isec;
- bfd_elf32_swap_symbol_in (input_bfd, esym, isymp);
-
- if (isymp->st_shndx == SHN_UNDEF)
+ if (isym->st_shndx == SHN_UNDEF)
isec = bfd_und_section_ptr;
- else if (isymp->st_shndx > 0 && isymp->st_shndx < SHN_LORESERVE)
- isec = bfd_section_from_elf_index (input_bfd, isymp->st_shndx);
- else if (isymp->st_shndx == SHN_ABS)
+ else if (isym->st_shndx == SHN_ABS)
isec = bfd_abs_section_ptr;
- else if (isymp->st_shndx == SHN_COMMON)
+ else if (isym->st_shndx == SHN_COMMON)
isec = bfd_com_section_ptr;
else
- {
- /* Who knows? */
- isec = NULL;
- }
+ isec = bfd_section_from_elf_index (input_bfd, isym->st_shndx);
*secpp = isec;
}
if (! mn10200_elf_relocate_section (output_bfd, link_info, input_bfd,
input_section, data, internal_relocs,
- internal_syms, sections))
+ isymbuf, sections))
goto error_return;
- if (sections != NULL)
- free (sections);
- sections = NULL;
- if (internal_syms != NULL)
- free (internal_syms);
- internal_syms = NULL;
- if (external_syms != NULL && symtab_hdr->contents == NULL)
- free (external_syms);
- external_syms = NULL;
- if (internal_relocs != elf_section_data (input_section)->relocs)
+ free (sections);
+ if (symtab_hdr->contents != (unsigned char *) isymbuf)
+ free (isymbuf);
+ if (elf_section_data (input_section)->relocs != internal_relocs)
free (internal_relocs);
- internal_relocs = NULL;
}
return data;
error_return:
- if (internal_relocs != NULL
- && internal_relocs != elf_section_data (input_section)->relocs)
+ free (sections);
+ if (symtab_hdr->contents != (unsigned char *) isymbuf)
+ free (isymbuf);
+ if (elf_section_data (input_section)->relocs != internal_relocs)
free (internal_relocs);
- if (external_syms != NULL && symtab_hdr->contents == NULL)
- free (external_syms);
- if (internal_syms != NULL)
- free (internal_syms);
- if (sections != NULL)
- free (sections);
return NULL;
}
-#define TARGET_LITTLE_SYM bfd_elf32_mn10200_vec
+#define TARGET_LITTLE_SYM mn10200_elf32_vec
#define TARGET_LITTLE_NAME "elf32-mn10200"
#define ELF_ARCH bfd_arch_mn10200
#define ELF_MACHINE_CODE EM_MN10200
#define ELF_MACHINE_ALT1 EM_CYGNUS_MN10200
#define ELF_MAXPAGESIZE 0x1000
+#define elf_backend_rela_normal 1
#define elf_info_to_howto mn10200_info_to_howto
-#define elf_info_to_howto_rel 0
+#define elf_info_to_howto_rel NULL
#define elf_backend_relocate_section mn10200_elf_relocate_section
#define bfd_elf32_bfd_relax_section mn10200_elf_relax_section
#define bfd_elf32_bfd_get_relocated_section_contents \
projects / deliverable / binutils-gdb.git / blobdiff