/* Motorola 68HC11-specific support for 32-bit ELF
- Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
+ Copyright (C) 1999-2016 Free Software Foundation, Inc.
Contributed by Stephane Carrez (stcarrez@nerim.fr)
(Heavily copied from the D10V port by Martin Hunt (hunt@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 "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
/* Relocation functions. */
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
- PARAMS ((bfd *, bfd_reloc_code_real_type));
+ (bfd *, bfd_reloc_code_real_type);
static void m68hc11_info_to_howto_rel
- PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
+ (bfd *, arelent *, Elf_Internal_Rela *);
/* Trampoline generation. */
static bfd_boolean m68hc11_elf_size_one_stub
- PARAMS((struct bfd_hash_entry *gen_entry, PTR in_arg));
+ (struct bfd_hash_entry *gen_entry, void *in_arg);
static bfd_boolean m68hc11_elf_build_one_stub
- PARAMS((struct bfd_hash_entry *gen_entry, PTR in_arg));
+ (struct bfd_hash_entry *gen_entry, void *in_arg);
static struct bfd_link_hash_table* m68hc11_elf_bfd_link_hash_table_create
- PARAMS ((bfd* abfd));
+ (bfd* abfd);
/* Linker relaxation. */
static bfd_boolean m68hc11_elf_relax_section
- PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
+ (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
static void m68hc11_elf_relax_delete_bytes
- PARAMS ((bfd *, asection *, bfd_vma, int));
+ (bfd *, asection *, bfd_vma, int);
static void m68hc11_relax_group
- PARAMS ((bfd *, asection *, bfd_byte *, unsigned,
- unsigned long, unsigned long));
-static int compare_reloc PARAMS ((const void *, const void *));
+ (bfd *, asection *, bfd_byte *, unsigned, unsigned long, unsigned long);
+static int compare_reloc (const void *, const void *);
/* Use REL instead of RELA to save space */
#define USE_REL 1
/* This reloc does nothing. */
HOWTO (R_M68HC11_NONE, /* type */
0, /* rightshift */
- 2, /* size (0 = byte, 1 = short, 2 = long) */
- 32, /* bitsize */
+ 3, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
};
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_m68hc11_howto_table)
+ / sizeof (elf_m68hc11_howto_table[0]));
+ i++)
+ if (elf_m68hc11_howto_table[i].name != NULL
+ && strcasecmp (elf_m68hc11_howto_table[i].name, r_name) == 0)
+ return &elf_m68hc11_howto_table[i];
+
+ return NULL;
+}
+
/* Set the howto pointer for an M68HC11 ELF reloc. */
static void
-m68hc11_info_to_howto_rel (abfd, cache_ptr, dst)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *cache_ptr;
- Elf_Internal_Rela *dst;
+m68hc11_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
+ 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_M68HC11_max);
+ if (r_type >= (unsigned int) R_M68HC11_max)
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%B: invalid M68HC11 reloc number: %d"), abfd, r_type);
+ r_type = 0;
+ }
cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
}
/* Build a 68HC11 trampoline stub. */
static bfd_boolean
-m68hc11_elf_build_one_stub (gen_entry, in_arg)
- struct bfd_hash_entry *gen_entry;
- PTR in_arg;
+m68hc11_elf_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
{
struct elf32_m68hc11_stub_hash_entry *stub_entry;
struct bfd_link_info *info;
info = (struct bfd_link_info *) in_arg;
htab = m68hc11_elf_hash_table (info);
+ if (htab == NULL)
+ return FALSE;
stub_sec = stub_entry->stub_sec;
/* Make a note of the offset within the stubs for this entry. */
- stub_entry->stub_offset = stub_sec->_raw_size;
- stub_sec->_raw_size += 10;
+ stub_entry->stub_offset = stub_sec->size;
+ stub_sec->size += 10;
loc = stub_sec->contents + stub_entry->stub_offset;
stub_bfd = stub_sec->owner;
we know stub section sizes. */
static bfd_boolean
-m68hc11_elf_size_one_stub (gen_entry, in_arg)
- struct bfd_hash_entry *gen_entry;
- PTR in_arg ATTRIBUTE_UNUSED;
+m68hc11_elf_size_one_stub (struct bfd_hash_entry *gen_entry,
+ void *in_arg ATTRIBUTE_UNUSED)
{
struct elf32_m68hc11_stub_hash_entry *stub_entry;
/* Massage our args to the form they really have. */
stub_entry = (struct elf32_m68hc11_stub_hash_entry *) gen_entry;
- stub_entry->stub_sec->_raw_size += 10;
+ stub_entry->stub_sec->size += 10;
return TRUE;
}
/* Create a 68HC11 ELF linker hash table. */
static struct bfd_link_hash_table *
-m68hc11_elf_bfd_link_hash_table_create (abfd)
- bfd *abfd;
+m68hc11_elf_bfd_link_hash_table_create (bfd *abfd)
{
struct m68hc11_elf_link_hash_table *ret;
}
static int
-compare_reloc (e1, e2)
- const void *e1;
- const void *e2;
+compare_reloc (const void *e1, const void *e2)
{
const Elf_Internal_Rela *i1 = (const Elf_Internal_Rela *) e1;
const Elf_Internal_Rela *i2 = (const Elf_Internal_Rela *) e2;
#define M6811_OP_LDX_IMMEDIATE (0xCE)
static void
-m68hc11_relax_group (abfd, sec, contents, value, offset, end_group)
- bfd *abfd;
- asection *sec;
- bfd_byte *contents;
- unsigned value;
- unsigned long offset;
- unsigned long end_group;
+m68hc11_relax_group (bfd *abfd, asection *sec, bfd_byte *contents,
+ unsigned value, unsigned long offset,
+ unsigned long end_group)
{
unsigned char code;
unsigned long start_offset;
and somewhat more difficult to support. */
static bfd_boolean
-m68hc11_elf_relax_section (abfd, sec, link_info, again)
- bfd *abfd;
- asection *sec;
- struct bfd_link_info *link_info;
- bfd_boolean *again;
+m68hc11_elf_relax_section (bfd *abfd, asection *sec,
+ struct bfd_link_info *link_info, bfd_boolean *again)
{
Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Shdr *shndx_hdr;
Elf_Internal_Rela *internal_relocs;
Elf_Internal_Rela *free_relocs = NULL;
Elf_Internal_Rela *irel, *irelend;
/* Assume nothing changes. */
*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;
-
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
- shndx_hdr = &elf_tdata (abfd)->symtab_shndx_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;
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;
}
}
prev_insn_group = 0;
/* Do nothing if this reloc is the last byte in the section. */
- if (irel->r_offset + 2 >= sec->_cooked_size)
+ if (irel->r_offset + 2 >= sec->size)
continue;
/* See if the next instruction is an unconditional pc-relative
prev_insn_group = 0;
/* 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;
prev_insn_group = irel;
if (prev_insn_group)
{
- unsigned long old_sec_size = sec->_cooked_size;
+ unsigned long old_sec_size = sec->size;
- /* 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;
prev_insn_group = 0;
irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_M68HC11_NONE);
- if (sec->_cooked_size != old_sec_size)
+ if (sec->size != old_sec_size)
*again = TRUE;
continue;
}
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;
if ((offset & 0xff80) == 0 || (offset & 0xff80) == 0xff80)
{
- /* 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;
/* Delete some bytes from a section while relaxing. */
static void
-m68hc11_elf_relax_delete_bytes (abfd, sec, addr, count)
- bfd *abfd;
- asection *sec;
- bfd_vma addr;
- int count;
+m68hc11_elf_relax_delete_bytes (bfd *abfd, asection *sec,
+ bfd_vma addr, int count)
{
Elf_Internal_Shdr *symtab_hdr;
unsigned int sec_shndx;
contents = elf_section_data (sec)->this_hdr.contents;
- toaddr = sec->_cooked_size;
+ toaddr = sec->size;
irel = elf_section_data (sec)->relocs;
irelend = irel + sec->reloc_count;
memmove (contents + addr, contents + addr + count,
(size_t) (toaddr - addr - count));
- sec->_cooked_size -= count;
+ sec->size -= count;
/* Adjust all the relocs. */
for (irel = elf_section_data (sec)->relocs; irel < irelend; irel++)
}
}
+/* Specific sections:
+ - The .page0 is a data section that is mapped in [0x0000..0x00FF].
+ Page0 accesses are faster on the M68HC11. Soft registers used by GCC-m6811
+ are located in .page0.
+ - The .vectors is the section that represents the interrupt
+ vectors. */
+static const struct bfd_elf_special_section elf32_m68hc11_special_sections[] =
+{
+ { STRING_COMMA_LEN (".eeprom"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { STRING_COMMA_LEN (".page0"), 0, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { STRING_COMMA_LEN (".softregs"), 0, SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
+ { STRING_COMMA_LEN (".vectors"), 0, SHT_PROGBITS, SHF_ALLOC },
+ { NULL, 0, 0, 0, 0 }
+};
\f
#define ELF_ARCH bfd_arch_m68hc11
+#define ELF_TARGET_ID M68HC11_ELF_DATA
#define ELF_MACHINE_CODE EM_68HC11
#define ELF_MAXPAGESIZE 0x1000
-#define TARGET_BIG_SYM bfd_elf32_m68hc11_vec
+#define TARGET_BIG_SYM m68hc11_elf32_vec
#define TARGET_BIG_NAME "elf32-m68hc11"
#define elf_info_to_howto 0
#define elf_info_to_howto_rel m68hc11_info_to_howto_rel
#define bfd_elf32_bfd_relax_section m68hc11_elf_relax_section
-#define elf_backend_gc_mark_hook elf32_m68hc11_gc_mark_hook
-#define elf_backend_gc_sweep_hook elf32_m68hc11_gc_sweep_hook
#define elf_backend_check_relocs elf32_m68hc11_check_relocs
#define elf_backend_relocate_section elf32_m68hc11_relocate_section
#define elf_backend_add_symbol_hook elf32_m68hc11_add_symbol_hook
#define elf_backend_object_p 0
#define elf_backend_final_write_processing 0
#define elf_backend_can_gc_sections 1
+#define elf_backend_special_sections elf32_m68hc11_special_sections
+#define elf_backend_merge_symbol_attribute elf32_m68hc11_merge_symbol_attribute
#define bfd_elf32_bfd_link_hash_table_create \
m68hc11_elf_bfd_link_hash_table_create
-#define bfd_elf32_bfd_link_hash_table_free \
- m68hc11_elf_bfd_link_hash_table_free
#define bfd_elf32_bfd_merge_private_bfd_data \
_bfd_m68hc11_elf_merge_private_bfd_data
#define bfd_elf32_bfd_set_private_flags _bfd_m68hc11_elf_set_private_flags
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