-/* Generic support for 32-bit ELF
- Copyright 1993, 1995, 1998, 1999, 2001, 2002
- Free Software Foundation, Inc.
+/* BFD back-end for Renesas H8/300 ELF binaries.
+ Copyright (C) 1993-2020 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"
#include "elf/h8.h"
+#include "cpu-h8300.h"
static reloc_howto_type *elf32_h8_reloc_type_lookup
- PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
-static void elf32_h8_info_to_howto
- PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
-static void elf32_h8_info_to_howto_rel
- PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
-static unsigned long elf32_h8_mach
- PARAMS ((flagword));
-static void elf32_h8_final_write_processing
- PARAMS ((bfd *, boolean));
-static boolean elf32_h8_object_p
- PARAMS ((bfd *));
-static boolean elf32_h8_merge_private_bfd_data
- PARAMS ((bfd *, bfd *));
-static boolean elf32_h8_relax_section
- PARAMS ((bfd *, asection *, struct bfd_link_info *, boolean *));
-static boolean elf32_h8_relax_delete_bytes
- PARAMS ((bfd *, asection *, bfd_vma, int));
-static boolean elf32_h8_symbol_address_p
- PARAMS ((bfd *, asection *, bfd_vma));
+ (bfd *abfd, bfd_reloc_code_real_type code);
+static bfd_boolean elf32_h8_info_to_howto
+ (bfd *, arelent *, Elf_Internal_Rela *);
+static bfd_boolean elf32_h8_info_to_howto_rel
+ (bfd *, arelent *, Elf_Internal_Rela *);
+static unsigned long elf32_h8_mach (flagword);
+static bfd_boolean elf32_h8_object_p (bfd *);
+static bfd_boolean elf32_h8_merge_private_bfd_data
+ (bfd *, struct bfd_link_info *);
+static bfd_boolean elf32_h8_relax_section
+ (bfd *, asection *, struct bfd_link_info *, bfd_boolean *);
+static bfd_boolean elf32_h8_relax_delete_bytes
+ (bfd *, asection *, bfd_vma, int);
+static bfd_boolean elf32_h8_symbol_address_p (bfd *, asection *, bfd_vma);
static bfd_byte *elf32_h8_get_relocated_section_contents
- PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *,
- bfd_byte *, boolean, asymbol **));
+ (bfd *, struct bfd_link_info *, struct bfd_link_order *,
+ bfd_byte *, bfd_boolean, asymbol **);
static bfd_reloc_status_type elf32_h8_final_link_relocate
- PARAMS ((unsigned long, bfd *, bfd *, asection *,
- bfd_byte *, bfd_vma, bfd_vma, bfd_vma,
- struct bfd_link_info *, asection *, int));
-static boolean elf32_h8_relocate_section
- PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
- bfd_byte *, Elf_Internal_Rela *,
- Elf_Internal_Sym *, asection **));
+ (unsigned long, bfd *, bfd *, asection *,
+ bfd_byte *, bfd_vma, bfd_vma, bfd_vma,
+ struct bfd_link_info *, asection *, int);
+static bfd_boolean elf32_h8_relocate_section
+ (bfd *, struct bfd_link_info *, bfd *, asection *,
+ bfd_byte *, Elf_Internal_Rela *,
+ Elf_Internal_Sym *, asection **);
static bfd_reloc_status_type special
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+ (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
/* This does not include any relocation information, but should be
good enough for GDB or objdump to read the file. */
#define R_H8_NONE_X 0
HOWTO (R_H8_NONE, /* type */
0, /* rightshift */
- 0, /* size (0 = byte, 1 = short, 2 = long) */
+ 3, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- special, /* special_function */
+ complain_overflow_dont,/* complain_on_overflow */
+ special, /* special_function */
"R_H8_NONE", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
#define R_H8_DIR32_X (R_H8_NONE_X + 1)
HOWTO (R_H8_DIR32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- special, /* special_function */
+ complain_overflow_dont,/* complain_on_overflow */
+ special, /* special_function */
"R_H8_DIR32", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
#define R_H8_DIR16_X (R_H8_DIR32_X + 1)
HOWTO (R_H8_DIR16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- special, /* special_function */
+ complain_overflow_dont,/* complain_on_overflow */
+ special, /* special_function */
"R_H8_DIR16", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
#define R_H8_DIR8_X (R_H8_DIR16_X + 1)
HOWTO (R_H8_DIR8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- special, /* special_function */
- "R_H8_DIR16", /* name */
- false, /* partial_inplace */
+ complain_overflow_dont,/* complain_on_overflow */
+ special, /* special_function */
+ "R_H8_DIR8", /* name */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0x000000ff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
#define R_H8_DIR16A8_X (R_H8_DIR8_X + 1)
HOWTO (R_H8_DIR16A8, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- special, /* special_function */
+ special, /* special_function */
"R_H8_DIR16A8", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
#define R_H8_DIR16R8_X (R_H8_DIR16A8_X + 1)
HOWTO (R_H8_DIR16R8, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- special, /* special_function */
+ special, /* special_function */
"R_H8_DIR16R8", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0x0000ffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
#define R_H8_DIR24A8_X (R_H8_DIR16R8_X + 1)
HOWTO (R_H8_DIR24A8, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- special, /* special_function */
+ special, /* special_function */
"R_H8_DIR24A8", /* name */
- true, /* partial_inplace */
+ TRUE, /* partial_inplace */
0xff000000, /* src_mask */
0x00ffffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
#define R_H8_DIR24R8_X (R_H8_DIR24A8_X + 1)
HOWTO (R_H8_DIR24R8, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
- special, /* special_function */
+ special, /* special_function */
"R_H8_DIR24R8", /* name */
- true, /* partial_inplace */
+ TRUE, /* partial_inplace */
0xff000000, /* src_mask */
0x00ffffff, /* dst_mask */
- false), /* pcrel_offset */
+ FALSE), /* pcrel_offset */
#define R_H8_DIR32A16_X (R_H8_DIR24R8_X + 1)
HOWTO (R_H8_DIR32A16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
- false, /* pc_relative */
+ FALSE, /* pc_relative */
0, /* bitpos */
- complain_overflow_dont, /* complain_on_overflow */
- special, /* special_function */
- "R_H8_DIR32", /* name */
- false, /* partial_inplace */
+ complain_overflow_dont,/* complain_on_overflow */
+ special, /* special_function */
+ "R_H8_DIR32A16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+#define R_H8_DISP32A16_X (R_H8_DIR32A16_X + 1)
+ HOWTO (R_H8_DISP32A16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont,/* complain_on_overflow */
+ special, /* special_function */
+ "R_H8_DISP32A16", /* name */
+ FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
- false), /* pcrel_offset */
-#define R_H8_PCREL16_X (R_H8_DIR32A16_X + 1)
+ FALSE), /* pcrel_offset */
+#define R_H8_PCREL16_X (R_H8_DISP32A16_X + 1)
HOWTO (R_H8_PCREL16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- special, /* special_function */
+ complain_overflow_signed,/* complain_on_overflow */
+ special, /* special_function */
"R_H8_PCREL16", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
- true), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
#define R_H8_PCREL8_X (R_H8_PCREL16_X + 1)
HOWTO (R_H8_PCREL8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
- true, /* pc_relative */
+ TRUE, /* pc_relative */
0, /* bitpos */
- complain_overflow_signed, /* complain_on_overflow */
- special, /* special_function */
+ complain_overflow_signed,/* complain_on_overflow */
+ special, /* special_function */
"R_H8_PCREL8", /* name */
- false, /* partial_inplace */
+ FALSE, /* partial_inplace */
0xff, /* src_mask */
0xff, /* dst_mask */
- true), /* pcrel_offset */
+ TRUE), /* pcrel_offset */
};
/* This structure is used to map BFD reloc codes to H8 ELF relocs. */
-struct elf_reloc_map
-{
+struct elf_reloc_map {
bfd_reloc_code_real_type bfd_reloc_val;
unsigned char howto_index;
};
-/* An array mapping BFD reloc codes to SH ELF relocs. */
+/* An array mapping BFD reloc codes to H8 ELF relocs. */
-static const struct elf_reloc_map h8_reloc_map[] =
-{
+static const struct elf_reloc_map h8_reloc_map[] = {
{ BFD_RELOC_NONE, R_H8_NONE_X },
{ BFD_RELOC_32, R_H8_DIR32_X },
{ BFD_RELOC_16, R_H8_DIR16_X },
{ BFD_RELOC_H8_DIR24A8, R_H8_DIR24A8_X },
{ BFD_RELOC_H8_DIR24R8, R_H8_DIR24R8_X },
{ BFD_RELOC_H8_DIR32A16, R_H8_DIR32A16_X },
+ { BFD_RELOC_H8_DISP32A16, R_H8_DISP32A16_X },
{ BFD_RELOC_16_PCREL, R_H8_PCREL16_X },
{ BFD_RELOC_8_PCREL, R_H8_PCREL8_X },
};
static reloc_howto_type *
-elf32_h8_reloc_type_lookup (abfd, code)
- bfd *abfd ATTRIBUTE_UNUSED;
- bfd_reloc_code_real_type code;
+elf32_h8_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_reloc_code_real_type code)
{
unsigned int i;
return NULL;
}
-static void
-elf32_h8_info_to_howto (abfd, bfd_reloc, elf_reloc)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *bfd_reloc;
- Elf32_Internal_Rela *elf_reloc;
+static reloc_howto_type *
+elf32_h8_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *r_name)
+{
+ unsigned int i;
+
+ for (i = 0;
+ i < sizeof (h8_elf_howto_table) / sizeof (h8_elf_howto_table[0]);
+ i++)
+ if (h8_elf_howto_table[i].name != NULL
+ && strcasecmp (h8_elf_howto_table[i].name, r_name) == 0)
+ return &h8_elf_howto_table[i];
+
+ return NULL;
+}
+
+static bfd_boolean
+elf32_h8_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
+ Elf_Internal_Rela *elf_reloc)
{
unsigned int r;
unsigned int i;
r = ELF32_R_TYPE (elf_reloc->r_info);
for (i = 0; i < sizeof (h8_elf_howto_table) / sizeof (reloc_howto_type); i++)
- if (h8_elf_howto_table[i].type== r)
+ if (h8_elf_howto_table[i].type == r)
{
bfd_reloc->howto = &h8_elf_howto_table[i];
- return;
+ return TRUE;
}
- abort ();
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"), abfd, r);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
}
-static void
-elf32_h8_info_to_howto_rel (abfd, bfd_reloc, elf_reloc)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *bfd_reloc;
- Elf32_Internal_Rel *elf_reloc ATTRIBUTE_UNUSED;
+static bfd_boolean
+elf32_h8_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *bfd_reloc ATTRIBUTE_UNUSED,
+ Elf_Internal_Rela *elf_reloc ATTRIBUTE_UNUSED)
{
- unsigned int r;
-
- abort ();
- r = ELF32_R_TYPE (elf_reloc->r_info);
- bfd_reloc->howto = &h8_elf_howto_table[r];
+ return FALSE;
}
/* Special handling for H8/300 relocs.
When doing -r, we can't do any arithmetic for the pcrel stuff, because
we support relaxing on the H8/300 series chips. */
static bfd_reloc_status_type
-special (abfd, reloc_entry, symbol, data, input_section, output_bfd,
- error_message)
- bfd *abfd ATTRIBUTE_UNUSED;
- arelent *reloc_entry ATTRIBUTE_UNUSED;
- asymbol *symbol ATTRIBUTE_UNUSED;
- PTR data ATTRIBUTE_UNUSED;
- asection *input_section ATTRIBUTE_UNUSED;
- bfd *output_bfd;
- char **error_message ATTRIBUTE_UNUSED;
+special (bfd *abfd ATTRIBUTE_UNUSED,
+ arelent *reloc_entry ATTRIBUTE_UNUSED,
+ asymbol *symbol ATTRIBUTE_UNUSED,
+ void * data ATTRIBUTE_UNUSED,
+ asection *input_section ATTRIBUTE_UNUSED,
+ bfd *output_bfd,
+ char **error_message ATTRIBUTE_UNUSED)
{
if (output_bfd == (bfd *) NULL)
return bfd_reloc_continue;
/* Perform a relocation as part of a final link. */
static bfd_reloc_status_type
-elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd,
- input_section, contents, offset, value,
- addend, info, sym_sec, is_local)
- unsigned long r_type;
- bfd *input_bfd;
- bfd *output_bfd ATTRIBUTE_UNUSED;
- asection *input_section ATTRIBUTE_UNUSED;
- 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;
+elf32_h8_final_link_relocate (unsigned long r_type, bfd *input_bfd,
+ bfd *output_bfd ATTRIBUTE_UNUSED,
+ asection *input_section ATTRIBUTE_UNUSED,
+ 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)
{
bfd_byte *hit_data = contents + offset;
switch (r_type)
{
-
case R_H8_NONE:
return bfd_reloc_ok;
case R_H8_DIR32:
case R_H8_DIR32A16:
+ case R_H8_DISP32A16:
case R_H8_DIR24A8:
value += addend;
bfd_put_32 (input_bfd, value, hit_data);
value += addend;
/* HIT_DATA is the address for the first byte for the relocated
- value. Subtract 1 so that we can manipulate the data in 32bit
+ value. Subtract 1 so that we can manipulate the data in 32-bit
hunks. */
hit_data--;
/* Retrieve the type byte for value from the section contents. */
value |= (bfd_get_32 (input_bfd, hit_data) & 0xff000000);
- /* Now scribble it out in one 32bit hunk. */
+ /* Now scribble it out in one 32-bit hunk. */
bfd_put_32 (input_bfd, value, hit_data);
return bfd_reloc_ok;
}
\f
/* Relocate an H8 ELF section. */
-static boolean
-elf32_h8_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
+elf32_h8_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;
Elf_Internal_Rela *rel, *relend;
- if (info->relocateable)
- return true;
-
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
struct elf_link_hash_entry *h;
bfd_vma relocation;
bfd_reloc_status_type r;
+ arelent bfd_reloc;
+ reloc_howto_type *howto;
+
+ if (! elf32_h8_info_to_howto (input_bfd, &bfd_reloc, rel))
+ continue;
+ howto = bfd_reloc.howto;
- /* This is a final link. */
r_symndx = ELF32_R_SYM (rel->r_info);
r_type = ELF32_R_TYPE (rel->r_info);
h = NULL;
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
- relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
+ 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 = elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd,
input_section,
contents, rel->r_offset,
{
const char *name;
const char *msg = (const char *) 0;
- arelent bfd_reloc;
- reloc_howto_type *howto;
-
- elf32_h8_info_to_howto (input_bfd, &bfd_reloc, rel);
- howto = bfd_reloc.howto;
if (h != NULL)
name = h->root.root.string;
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;
}
/* Object files encode the specific H8 model they were compiled
Examine that field and return the proper BFD machine type for
the object file. */
static unsigned long
-elf32_h8_mach (flags)
- flagword flags;
+elf32_h8_mach (flagword flags)
{
switch (flags & EF_H8_MACH)
{
case E_H8_MACH_H8300S:
return bfd_mach_h8300s;
+
+ case E_H8_MACH_H8300HN:
+ return bfd_mach_h8300hn;
+
+ case E_H8_MACH_H8300SN:
+ return bfd_mach_h8300sn;
+
+ case E_H8_MACH_H8300SX:
+ return bfd_mach_h8300sx;
+
+ case E_H8_MACH_H8300SXN:
+ return bfd_mach_h8300sxn;
}
}
file. We use this opportunity to encode the BFD machine type
into the flags field in the object file. */
-static void
-elf32_h8_final_write_processing (abfd, linker)
- bfd *abfd;
- boolean linker ATTRIBUTE_UNUSED;
+static bfd_boolean
+elf32_h8_final_write_processing (bfd *abfd)
{
unsigned long val;
case bfd_mach_h8300s:
val = E_H8_MACH_H8300S;
break;
+
+ case bfd_mach_h8300hn:
+ val = E_H8_MACH_H8300HN;
+ break;
+
+ case bfd_mach_h8300sn:
+ val = E_H8_MACH_H8300SN;
+ break;
+
+ case bfd_mach_h8300sx:
+ val = E_H8_MACH_H8300SX;
+ break;
+
+ case bfd_mach_h8300sxn:
+ val = E_H8_MACH_H8300SXN;
+ break;
}
elf_elfheader (abfd)->e_flags &= ~ (EF_H8_MACH);
elf_elfheader (abfd)->e_flags |= val;
+ return _bfd_elf_final_write_processing (abfd);
}
/* Return nonzero if ABFD represents a valid H8 ELF object file; also
record the encoded machine type found in the ELF flags. */
-static boolean
-elf32_h8_object_p (abfd)
- bfd *abfd;
+static bfd_boolean
+elf32_h8_object_p (bfd *abfd)
{
bfd_default_set_arch_mach (abfd, bfd_arch_h8300,
elf32_h8_mach (elf_elfheader (abfd)->e_flags));
- return true;
+ return TRUE;
}
/* Merge backend specific data from an object file to the output
object file when linking. The only data we need to copy at this
time is the architecture/machine information. */
-static boolean
-elf32_h8_merge_private_bfd_data (ibfd, obfd)
- bfd *ibfd;
- bfd *obfd;
+static bfd_boolean
+elf32_h8_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
{
+ bfd *obfd = info->output_bfd;
+
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return true;
+ return TRUE;
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
&& bfd_get_mach (obfd) < bfd_get_mach (ibfd))
{
if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
- bfd_get_mach (ibfd)))
- return false;
+ bfd_get_mach (ibfd)))
+ return FALSE;
}
- return true;
+ return TRUE;
}
/* This function handles relaxing for the H8..
- There's a few relaxing opportunites available on the H8:
+ There are a few relaxing opportunities available on the H8:
- jmp/jsr:24 -> bra/bsr:8 2 bytes
+ jmp/jsr:24 -> bra/bsr:8 2 bytes
The jmp may be completely eliminated if the previous insn is a
conditional branch to the insn after the jump. In that case
we invert the branch and delete the jump and save 4 bytes.
- bCC:16 -> bCC:8 2 bytes
- bsr:16 -> bsr:8 2 bytes
+ bCC:16 -> bCC:8 2 bytes
+ bsr:16 -> bsr:8 2 bytes
+
+ bset:16 -> bset:8 2 bytes
+ bset:24/32 -> bset:8 4 bytes
+ (also applicable to other bit manipulation instructions)
+
+ mov.b:16 -> mov.b:8 2 bytes
+ mov.b:24/32 -> mov.b:8 4 bytes
+
+ bset:24/32 -> bset:16 2 bytes
+ (also applicable to other bit manipulation instructions)
- mov.b:16 -> mov.b:8 2 bytes
- mov.b:24/32 -> mov.b:8 4 bytes
+ mov.[bwl]:24/32 -> mov.[bwl]:16 2 bytes
- mov.[bwl]:24/32 -> mov.[bwl]:16 2 bytes */
+ mov.[bwl] @(displ:24/32+ERx) -> mov.[bwl] @(displ:16+ERx) 4 bytes. */
-static boolean
-elf32_h8_relax_section (abfd, sec, link_info, again)
- bfd *abfd;
- asection *sec;
- struct bfd_link_info *link_info;
- boolean *again;
+static bfd_boolean
+elf32_h8_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;
static Elf_Internal_Rela *last_reloc = 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;
{
bfd_vma symval;
+ {
+ arelent bfd_reloc;
+
+ if (! elf32_h8_info_to_howto (abfd, &bfd_reloc, irel))
+ continue;
+ }
/* Keep track of the previous reloc so that we can delete
some long jumps created by the compiler. */
if (irel != internal_relocs)
last_reloc = irel - 1;
- if (ELF32_R_TYPE (irel->r_info) != R_H8_DIR24R8
- && ELF32_R_TYPE (irel->r_info) != R_H8_PCREL16
- && ELF32_R_TYPE (irel->r_info) != R_H8_DIR16A8
- && ELF32_R_TYPE (irel->r_info) != R_H8_DIR24A8
- && ELF32_R_TYPE (irel->r_info) != R_H8_DIR32A16)
- continue;
+ switch(ELF32_R_TYPE (irel->r_info))
+ {
+ case R_H8_DIR24R8:
+ case R_H8_PCREL16:
+ case R_H8_DIR16A8:
+ case R_H8_DIR24A8:
+ case R_H8_DIR32A16:
+ case R_H8_DISP32A16:
+ break;
+ default:
+ continue;
+ }
/* Get the section contents if we haven't done so already. */
if (contents == NULL)
else
{
/* Go get them off disk. */
- contents = (bfd_byte *) bfd_malloc (sec->_raw_size);
- if (contents == NULL)
- goto error_return;
-
- 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;
}
}
Elf_Internal_Sym *isym;
asection *sym_sec;
- isym = isymbuf + ELF64_R_SYM (irel->r_info);
+ isym = isymbuf + ELF32_R_SYM (irel->r_info);
sym_sec = bfd_section_from_elf_index (abfd, isym->st_shndx);
- symval = (isym->st_value
- + sym_sec->output_section->vma
- + sym_sec->output_offset);
+ symval = isym->st_value;
+ /* If the reloc is absolute, it will not have
+ a symbol or section associated with it. */
+ if (sym_sec)
+ symval += sym_sec->output_section->vma
+ + sym_sec->output_offset;
}
else
{
&& 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;
}
the linker is run. */
switch (ELF32_R_TYPE (irel->r_info))
{
- /* Try to turn a 24 bit absolute branch/call into an 8 bit
- pc-relative branch/call. */
+ /* Try to turn a 24-bit absolute branch/call into an 8-bit
+ pc-relative branch/call. */
case R_H8_DIR24R8:
{
bfd_vma value = symval + irel->r_addend;
elf_section_data (sec)->this_hdr.contents = contents;
symtab_hdr->contents = (unsigned char *) isymbuf;
+ /* Get the instruction code being relaxed. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+
/* If the previous instruction conditionally jumped around
this instruction, we may be able to reverse the condition
and redirect the previous instruction to the target of
this instruction.
Such sequences are used by the compiler to deal with
- long conditional branches. */
- if ((int) gap <= 130
+ long conditional branches.
+
+ Only perform this optimisation for jumps (code 0x5a) not
+ subroutine calls, as otherwise it could transform:
+
+ mov.w r0,r0
+ beq .L1
+ jsr @_bar
+ .L1: rts
+ _bar: rts
+ into:
+ mov.w r0,r0
+ bne _bar
+ rts
+ _bar: rts
+
+ which changes the call (jsr) into a branch (bne). */
+ if (code == 0x5a /* jmp24. */
+ && (int) gap <= 130
&& (int) gap >= -128
&& last_reloc
&& ELF32_R_TYPE (last_reloc->r_info) == R_H8_PCREL8
= ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
ELF32_R_TYPE (R_H8_NONE));
- last_reloc->r_info
+ last_reloc->r_info
= ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- ELF32_R_TYPE (R_H8_PCREL8));
- last_reloc->r_addend = irel->r_addend;
-
+ ELF32_R_TYPE (R_H8_PCREL8));
+ last_reloc->r_addend = irel->r_addend;
code = bfd_get_8 (abfd,
contents + last_reloc->r_offset - 1);
code ^= 1;
bfd_put_8 (abfd,
code,
- contents + last_reloc->r_offset - 1);
+ contents + last_reloc->r_offset - 1);
/* Delete four bytes of data. */
if (!elf32_h8_relax_delete_bytes (abfd, sec,
4))
goto error_return;
- *again = true;
+ *again = TRUE;
break;
}
}
- /* We could not eliminate this jump, so just shorten it. */
- code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
-
if (code == 0x5e)
- bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 1);
+ /* This is jsr24 */
+ bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 1); /* bsr8. */
else if (code == 0x5a)
- bfd_put_8 (abfd, 0x40, contents + irel->r_offset - 1);
+ /* This is jmp24 */
+ bfd_put_8 (abfd, 0x40, contents + irel->r_offset - 1); /* bra8. */
else
abort ();
/* 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;
}
- /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
- branch. */
+ /* Try to turn a 16-bit pc-relative branch into a 8-bit pc-relative
+ branch. */
case R_H8_PCREL16:
{
bfd_vma value = symval + irel->r_addend;
/* If the distance is within -126..+130 inclusive, then we can
relax this jump. +130 is valid since the target will move
two bytes closer if we do relax this branch. */
- if ((int)gap >= -126 && (int)gap <= 130)
+ if ((int) gap >= -126 && (int) gap <= 130)
{
- unsigned char code;
+ unsigned char code;
- /* Note that we've changed the relocs, section contents,
+ /* Note that we've changed the relocs, section contents,
etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- elf_section_data (sec)->this_hdr.contents = contents;
+ elf_section_data (sec)->relocs = internal_relocs;
+ elf_section_data (sec)->this_hdr.contents = contents;
symtab_hdr->contents = (unsigned char *) isymbuf;
- /* Get the opcode. */
- code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
+ /* Get the opcode. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
if (code == 0x58)
{
/* bCC:16 -> bCC:8 */
- /* Get the condition code from the original insn. */
+ /* Get the second byte of the original insn, which
+ contains the condition code. */
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+
+ /* Compute the first byte of the relaxed
+ instruction. The original sequence 0x58 0xX0
+ is relaxed to 0x4X, where X represents the
+ condition code. */
code &= 0xf0;
code >>= 4;
code |= 0x40;
- bfd_put_8 (abfd, code, contents + irel->r_offset - 2);
+ bfd_put_8 (abfd, code, contents + irel->r_offset - 2); /* bCC:8. */
}
- else if (code == 0x5c)
- bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 2);
+ else if (code == 0x5c) /* bsr16. */
+ /* This is bsr. */
+ bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 2); /* bsr8. */
else
- abort ();
+ /* Might be MOVSD. */
+ break;
/* Fix the relocation's type. */
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_H8_PCREL8);
- irel->r_offset--;
+ irel->r_offset--;
- /* Delete two bytes of data. */
- if (!elf32_h8_relax_delete_bytes (abfd, sec,
+ /* Delete two bytes of data. */
+ if (!elf32_h8_relax_delete_bytes (abfd, sec,
irel->r_offset + 1, 2))
goto error_return;
- /* That will change things, so, we should relax again.
+ /* 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;
}
- /* This is a 16 bit absolute address in a "mov.b" insn, which may
- become an 8 bit absolute address if its in the right range. */
+ /* This is a 16-bit absolute address in one of the following
+ instructions:
+
+ "band", "bclr", "biand", "bild", "bior", "bist", "bixor",
+ "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and
+ "mov.b"
+
+ We may relax this into an 8-bit absolute address if it's in
+ the right range. */
case R_H8_DIR16A8:
{
- bfd_vma value = symval + irel->r_addend;
+ bfd_vma value;
- if ((bfd_get_mach (abfd) == bfd_mach_h8300
- && value >= 0xff00
- && value <= 0xffff)
- || ((bfd_get_mach (abfd) == bfd_mach_h8300h
- || bfd_get_mach (abfd) == bfd_mach_h8300s)
- && value >= 0xffff00
- && value <= 0xffffff))
+ value = bfd_h8300_pad_address (abfd, symval + irel->r_addend);
+ if (value >= 0xffffff00u)
{
- unsigned char code;
+ unsigned char code;
+ unsigned char temp_code;
- /* Note that we've changed the relocs, section contents,
+ /* Note that we've changed the relocs, section contents,
etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- elf_section_data (sec)->this_hdr.contents = contents;
+ elf_section_data (sec)->relocs = internal_relocs;
+ elf_section_data (sec)->this_hdr.contents = contents;
symtab_hdr->contents = (unsigned char *) isymbuf;
- /* Get the opcode. */
- code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
+ /* Get the opcode. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
- /* Sanity check. */
- if (code != 0x6a)
+ /* All instructions with R_H8_DIR16A8 start with
+ 0x6a. */
+ if (code != 0x6a)
abort ();
- code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
-
- if ((code & 0xf0) == 0x00)
- bfd_put_8 (abfd,
- (code & 0xf) | 0x20,
- contents + irel->r_offset - 2);
- else if ((code & 0xf0) == 0x80)
- bfd_put_8 (abfd,
- (code & 0xf) | 0x30,
- contents + irel->r_offset - 2);
- else
- abort ();
+ temp_code = code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+ /* If this is a mov.b instruction, clear the lower
+ nibble, which contains the source/destination
+ register number. */
+ if ((temp_code & 0x10) != 0x10)
+ temp_code &= 0xf0;
- /* Fix the relocation's type. */
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ switch (temp_code)
+ {
+ case 0x00:
+ /* This is mov.b @aa:16,Rd. */
+ bfd_put_8 (abfd, (code & 0xf) | 0x20,
+ contents + irel->r_offset - 2);
+ break;
+ case 0x80:
+ /* This is mov.b Rs,@aa:16. */
+ bfd_put_8 (abfd, (code & 0xf) | 0x30,
+ contents + irel->r_offset - 2);
+ break;
+ case 0x18:
+ /* This is a bit-maniputation instruction that
+ stores one bit into memory, one of "bclr",
+ "bist", "bnot", "bset", and "bst". */
+ bfd_put_8 (abfd, 0x7f, contents + irel->r_offset - 2);
+ break;
+ case 0x10:
+ /* This is a bit-maniputation instruction that
+ loads one bit from memory, one of "band",
+ "biand", "bild", "bior", "bixor", "bld", "bor",
+ "btst", and "bxor". */
+ bfd_put_8 (abfd, 0x7e, contents + irel->r_offset - 2);
+ break;
+ default:
+ abort ();
+ }
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_H8_DIR8);
- /* Delete two bytes of data. */
- if (!elf32_h8_relax_delete_bytes (abfd, sec,
+ /* Move the relocation. */
+ irel->r_offset--;
+
+ /* Delete two bytes of data. */
+ if (!elf32_h8_relax_delete_bytes (abfd, sec,
irel->r_offset + 1, 2))
goto error_return;
- /* That will change things, so, we should relax again.
+ /* 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;
}
- /* This is a 24 bit absolute address in a "mov.b" insn, which may
- become an 8 bit absolute address if its in the right range. */
+ /* This is a 24-bit absolute address in one of the following
+ instructions:
+
+ "band", "bclr", "biand", "bild", "bior", "bist", "bixor",
+ "bld", "bnot", "bor", "bset", "bst", "btst", "bxor", and
+ "mov.b"
+
+ We may relax this into an 8-bit absolute address if it's in
+ the right range. */
case R_H8_DIR24A8:
{
- bfd_vma value = symval + irel->r_addend;
+ bfd_vma value;
- if ((bfd_get_mach (abfd) == bfd_mach_h8300
- && value >= 0xff00
- && value <= 0xffff)
- || ((bfd_get_mach (abfd) == bfd_mach_h8300h
- || bfd_get_mach (abfd) == bfd_mach_h8300s)
- && value >= 0xffff00
- && value <= 0xffffff))
+ value = bfd_h8300_pad_address (abfd, symval + irel->r_addend);
+ if (value >= 0xffffff00u)
{
- unsigned char code;
+ unsigned char code;
+ unsigned char temp_code;
- /* Note that we've changed the relocs, section contents,
+ /* Note that we've changed the relocs, section contents,
etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- elf_section_data (sec)->this_hdr.contents = contents;
+ elf_section_data (sec)->relocs = internal_relocs;
+ elf_section_data (sec)->this_hdr.contents = contents;
symtab_hdr->contents = (unsigned char *) isymbuf;
- /* Get the opcode. */
- code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
+ /* Get the opcode. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
- /* Sanity check. */
- if (code != 0x6a)
+ /* All instructions with R_H8_DIR24A8 start with
+ 0x6a. */
+ if (code != 0x6a)
abort ();
- code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
-
- if ((code & 0xf0) == 0x00)
- bfd_put_8 (abfd,
- (code & 0xf) | 0x20,
- contents + irel->r_offset - 2);
- else if ((code & 0xf0) == 0x80)
- bfd_put_8 (abfd,
- (code & 0xf) | 0x30,
- contents + irel->r_offset - 2);
- else
- abort ();
+ temp_code = code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+
+ /* If this is a mov.b instruction, clear the lower
+ nibble, which contains the source/destination
+ register number. */
+ if ((temp_code & 0x30) != 0x30)
+ temp_code &= 0xf0;
+
+ switch (temp_code)
+ {
+ case 0x20:
+ /* This is mov.b @aa:24/32,Rd. */
+ bfd_put_8 (abfd, (code & 0xf) | 0x20,
+ contents + irel->r_offset - 2);
+ break;
+ case 0xa0:
+ /* This is mov.b Rs,@aa:24/32. */
+ bfd_put_8 (abfd, (code & 0xf) | 0x30,
+ contents + irel->r_offset - 2);
+ break;
+ case 0x38:
+ /* This is a bit-maniputation instruction that
+ stores one bit into memory, one of "bclr",
+ "bist", "bnot", "bset", and "bst". */
+ bfd_put_8 (abfd, 0x7f, contents + irel->r_offset - 2);
+ break;
+ case 0x30:
+ /* This is a bit-maniputation instruction that
+ loads one bit from memory, one of "band",
+ "biand", "bild", "bior", "bixor", "bld", "bor",
+ "btst", and "bxor". */
+ bfd_put_8 (abfd, 0x7e, contents + irel->r_offset - 2);
+ break;
+ default:
+ abort();
+ }
- /* Fix the relocation's type. */
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
R_H8_DIR8);
+ irel->r_offset--;
- /* Delete two bytes of data. */
- if (!elf32_h8_relax_delete_bytes (abfd, sec, irel->r_offset, 2))
+ /* Delete four bytes of data. */
+ if (!elf32_h8_relax_delete_bytes (abfd, sec,
+ irel->r_offset + 1, 4))
goto error_return;
- /* That will change things, so, we should relax again.
+ /* 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;
}
}
- /* FALLTHRU */
+ /* Fall through. */
- /* This is a 24/32bit absolute address in a "mov" insn, which may
- become a 16bit absoulte address if it is in the right range. */
+ /* This is a 24-/32-bit absolute address in one of the
+ following instructions:
+
+ "band", "bclr", "biand", "bild", "bior", "bist",
+ "bixor", "bld", "bnot", "bor", "bset", "bst", "btst",
+ "bxor", "ldc.w", "stc.w" and "mov.[bwl]"
+
+ We may relax this into an 16-bit absolute address if it's
+ in the right range. */
case R_H8_DIR32A16:
{
- bfd_vma value = symval + irel->r_addend;
+ bfd_vma value;
- if (value <= 0x7fff || value >= 0xff8000)
+ value = bfd_h8300_pad_address (abfd, symval + irel->r_addend);
+ if (value <= 0x7fff || value >= 0xffff8000u)
{
- unsigned char code;
+ unsigned char code;
+ unsigned char op0, op1, op2, op3;
+ unsigned char *op_ptr;
- /* Note that we've changed the relocs, section contents,
+ /* Note that we've changed the relocs, section contents,
etc. */
- elf_section_data (sec)->relocs = internal_relocs;
- elf_section_data (sec)->this_hdr.contents = contents;
+ elf_section_data (sec)->relocs = internal_relocs;
+ elf_section_data (sec)->this_hdr.contents = contents;
symtab_hdr->contents = (unsigned char *) isymbuf;
- /* Get the opcode. */
- code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+ if (irel->r_offset >= 4)
+ {
+ /* Check for 4-byte MOVA relaxation (SH-specific). */
+ int second_reloc = 0;
+
+ op_ptr = contents + irel->r_offset - 4;
+
+ if (last_reloc)
+ {
+ arelent bfd_reloc;
+ reloc_howto_type *h;
+ bfd_vma last_reloc_size;
+
+ if (! elf32_h8_info_to_howto (abfd, &bfd_reloc, last_reloc))
+ break;
+ h = bfd_reloc.howto;
+ last_reloc_size = 1 << h->size;
+ if (last_reloc->r_offset + last_reloc_size
+ == irel->r_offset)
+ {
+ op_ptr -= last_reloc_size;
+ second_reloc = 1;
+ }
+ }
+
+ if (irel + 1 < irelend)
+ {
+ Elf_Internal_Rela *next_reloc = irel + 1;
+ arelent bfd_reloc;
+ reloc_howto_type *h;
+ bfd_vma next_reloc_size;
+
+ if (! elf32_h8_info_to_howto (abfd, &bfd_reloc, next_reloc))
+ break;
+ h = bfd_reloc.howto;
+ next_reloc_size = 1 << h->size;
+ if (next_reloc->r_offset + next_reloc_size
+ == irel->r_offset)
+ {
+ op_ptr -= next_reloc_size;
+ second_reloc = 1;
+ }
+ }
+
+ op0 = bfd_get_8 (abfd, op_ptr + 0);
+ op1 = bfd_get_8 (abfd, op_ptr + 1);
+ op2 = bfd_get_8 (abfd, op_ptr + 2);
+ op3 = bfd_get_8 (abfd, op_ptr + 3);
+
+ if (op0 == 0x01
+ && (op1 & 0xdf) == 0x5f
+ && (op2 & 0x40) == 0x40
+ && (op3 & 0x80) == 0x80)
+ {
+ if ((op2 & 0x08) == 0)
+ second_reloc = 1;
+
+ if (second_reloc)
+ {
+ op3 &= ~0x08;
+ bfd_put_8 (abfd, op3, op_ptr + 3);
+ }
+ else
+ {
+ op2 &= ~0x08;
+ bfd_put_8 (abfd, op2, op_ptr + 2);
+ }
+ goto r_h8_dir32a16_common;
+ }
+ }
+
+ /* Now check for short version of MOVA. (SH-specific) */
+ op_ptr = contents + irel->r_offset - 2;
+ op0 = bfd_get_8 (abfd, op_ptr + 0);
+ op1 = bfd_get_8 (abfd, op_ptr + 1);
+
+ if (op0 == 0x7a
+ && (op1 & 0x88) == 0x80)
+ {
+ op1 |= 0x08;
+ bfd_put_8 (abfd, op1, op_ptr + 1);
+ goto r_h8_dir32a16_common;
+ }
+
+ /* Get the opcode. */
+ code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
- /* We just need to turn off bit 0x20. */
- code &= ~0x20;
+ /* Fix the opcode. For all the instructions that
+ belong to this relaxation, we simply need to turn
+ off bit 0x20 in the previous byte. */
+ code &= ~0x20;
- bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
+ bfd_put_8 (abfd, code, contents + irel->r_offset - 1);
- /* Fix the relocation's type. */
- irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
- R_H8_DIR16A8);
+ r_h8_dir32a16_common:
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info),
+ R_H8_DIR16);
- /* Delete two bytes of data. */
- if (!elf32_h8_relax_delete_bytes (abfd, sec,
+ /* Delete two bytes of data. */
+ if (!elf32_h8_relax_delete_bytes (abfd, sec,
irel->r_offset + 1, 2))
goto error_return;
- /* That will change things, so, we should relax again.
+ /* 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;
+ break; /* case R_H8_DIR32A16 */
}
+ case R_H8_DISP32A16:
+ /* mov.[bwl] @(displ:24/32+ERx) -> mov.[bwl] @(displ:16+ERx) 4 bytes
+ It is assured that instruction uses at least 4 bytes opcode before
+ reloc entry addressing mode "register indirect with displacement"
+ relaxing options (all saving 4 bytes):
+ 0x78 0sss0000 0x6A 0010dddd disp:32 mov.b @(d:32,ERs),Rd ->
+ 0x6E 0sssdddd disp:16 mov.b @(d:16,ERs),Rd
+ 0x78 0sss0000 0x6B 0010dddd disp:32 mov.w @(d:32,ERs),Rd ->
+ 0x6F 0sssdddd disp:16 mov.w @(d:16,ERs),Rd
+ 0x01 0x00 0x78 0sss0000 0x6B 00100ddd disp:32 mov.l @(d:32,ERs),ERd ->
+ 0x01 0x00 0x6F 0sss0ddd disp:16 mov.l @(d:16,ERs),ERd
+
+ 0x78 0ddd0000 0x6A 1010ssss disp:32 mov.b Rs,@(d:32,ERd) ->
+ 0x6E 1dddssss disp:16 mov.b Rs,@(d:16,ERd)
+ 0x78 0ddd0000 0x6B 1010ssss disp:32 mov.w Rs,@(d:32,ERd) ->
+ 0x6F 1dddssss disp:16 mov.w Rs,@(d:16,ERd)
+ 0x01 0x00 0x78 xddd0000 0x6B 10100sss disp:32 mov.l ERs,@(d:32,ERd) ->
+ 0x01 0x00 0x6F 1ddd0sss disp:16 mov.l ERs,@(d:16,ERd)
+ mov.l prefix 0x01 0x00 can be left as is and mov.l handled same
+ as mov.w/ */
+ {
+ bfd_vma value;
+
+ value = bfd_h8300_pad_address (abfd, symval + irel->r_addend);
+ if (value <= 0x7fff || value >= 0xffff8000u)
+ {
+ unsigned char op0, op1, op2, op3, op0n, op1n;
+ int relax = 0;
+
+ /* Note that we've changed the relocs, section contents,
+ etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ elf_section_data (sec)->this_hdr.contents = contents;
+ symtab_hdr->contents = (unsigned char *) isymbuf;
+
+ if (irel->r_offset >= 4)
+ {
+ op0 = bfd_get_8 (abfd, contents + irel->r_offset - 4);
+ op1 = bfd_get_8 (abfd, contents + irel->r_offset - 3);
+ op2 = bfd_get_8 (abfd, contents + irel->r_offset - 2);
+ op3 = bfd_get_8 (abfd, contents + irel->r_offset - 1);
+
+ if (op0 == 0x78)
+ {
+ switch(op2)
+ {
+ case 0x6A:
+ if ((op1 & 0x8F) == 0x00 && (op3 & 0x70) == 0x20)
+ {
+ /* mov.b. */
+ op0n = 0x6E;
+ relax = 1;
+ }
+ break;
+ case 0x6B:
+ if ((op1 & 0x0F) == 0x00 && (op3 & 0x70) == 0x20)
+ {
+ /* mov.w/l. */
+ op0n = 0x6F;
+ relax = 1;
+ }
+ break;
+ default:
+ break;
+ }
+ }
+ }
+
+ if (relax)
+ {
+ op1n = (op3 & 0x8F) | (op1 & 0x70);
+ bfd_put_8 (abfd, op0n, contents + irel->r_offset - 4);
+ bfd_put_8 (abfd, op1n, contents + irel->r_offset - 3);
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_H8_DIR16);
+ irel->r_offset -= 2;
+
+ /* Delete four bytes of data. */
+ if (!elf32_h8_relax_delete_bytes (abfd, sec, irel->r_offset + 2, 4))
+ goto error_return;
+
+ /* That will change things, so, we should relax again.
+ Note that this is not required, and it may be slow. */
+ *again = TRUE;
+ }
+ }
+ }
+ break;
+
default:
break;
}
}
}
- if (internal_relocs != NULL
- && elf_section_data (sec)->relocs != internal_relocs)
+ if (elf_section_data (sec)->relocs != internal_relocs)
free (internal_relocs);
- return true;
+ return TRUE;
error_return:
- if (isymbuf != NULL
- && symtab_hdr->contents != (unsigned char *) isymbuf)
+ if (symtab_hdr->contents != (unsigned char *) isymbuf)
free (isymbuf);
- if (contents != NULL
- && elf_section_data (sec)->this_hdr.contents != contents)
+ if (elf_section_data (sec)->this_hdr.contents != contents)
free (contents);
- if (internal_relocs != NULL
- && elf_section_data (sec)->relocs != internal_relocs)
+ if (elf_section_data (sec)->relocs != internal_relocs)
free (internal_relocs);
- return false;
+ return FALSE;
}
/* Delete some bytes from a section while relaxing. */
-static boolean
-elf32_h8_relax_delete_bytes (abfd, sec, addr, count)
- bfd *abfd;
- asection *sec;
- bfd_vma addr;
- int count;
+static bfd_boolean
+elf32_h8_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;
- Elf_Internal_Rela *irelalign;
Elf_Internal_Sym *isym;
Elf_Internal_Sym *isymend;
bfd_vma toaddr;
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;
+ 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->_cooked_size -= 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 <= toaddr))
irel->r_offset -= count;
}
{
if (isym->st_shndx == sec_shndx
&& isym->st_value > addr
- && isym->st_value < toaddr)
+ && isym->st_value <= toaddr)
isym->st_value -= count;
}
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;
- }
+ && sym_hash->root.u.def.value <= toaddr)
+ sym_hash->root.u.def.value -= count;
}
- return true;
+ return TRUE;
}
-/* Return true if a symbol exists at the given address, else return
- false. */
-static boolean
-elf32_h8_symbol_address_p (abfd, sec, addr)
- bfd *abfd;
- asection *sec;
- bfd_vma addr;
+/* Return TRUE if a symbol exists at the given address, else return
+ FALSE. */
+static bfd_boolean
+elf32_h8_symbol_address_p (bfd *abfd, asection *sec, bfd_vma addr)
{
Elf_Internal_Shdr *symtab_hdr;
unsigned int sec_shndx;
{
if (isym->st_shndx == sec_shndx
&& isym->st_value == addr)
- return true;
+ return TRUE;
}
symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
|| 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 TRUE;
}
- return false;
+ return FALSE;
}
/* This is a version of bfd_generic_get_relocated_section_contents
which uses elf32_h8_relocate_section. */
static bfd_byte *
-elf32_h8_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;
+elf32_h8_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;
/* 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 *isym, *isymend;
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;
isymbuf, sections))
goto error_return;
- if (sections != NULL)
- free (sections);
- if (isymbuf != NULL
- && symtab_hdr->contents != (unsigned char *) isymbuf)
+ free (sections);
+ if (symtab_hdr->contents != (unsigned char *) isymbuf)
free (isymbuf);
if (elf_section_data (input_section)->relocs != internal_relocs)
free (internal_relocs);
return data;
error_return:
- if (sections != NULL)
- free (sections);
- if (isymbuf != NULL
- && symtab_hdr->contents != (unsigned char *) isymbuf)
+ free (sections);
+ if (symtab_hdr->contents != (unsigned char *) isymbuf)
free (isymbuf);
- if (internal_relocs != NULL
- && elf_section_data (input_section)->relocs != internal_relocs)
+ if (elf_section_data (input_section)->relocs != internal_relocs)
free (internal_relocs);
return NULL;
}
-#define TARGET_BIG_SYM bfd_elf32_h8300_vec
+#define TARGET_BIG_SYM h8300_elf32_vec
#define TARGET_BIG_NAME "elf32-h8300"
#define ELF_ARCH bfd_arch_h8300
#define ELF_MACHINE_CODE EM_H8_300
#define ELF_MAXPAGESIZE 0x1
#define bfd_elf32_bfd_reloc_type_lookup elf32_h8_reloc_type_lookup
+#define bfd_elf32_bfd_reloc_name_lookup elf32_h8_reloc_name_lookup
#define elf_info_to_howto elf32_h8_info_to_howto
#define elf_info_to_howto_rel elf32_h8_info_to_howto_rel
/* ??? when elf_backend_relocate_section is not defined, elf32-target.h
defaults to using _bfd_generic_link_hash_table_create, but
- elflink.h:bfd_elf32_size_dynamic_sections uses
+ bfd_elf_size_dynamic_sections uses
dynobj = elf_hash_table (info)->dynobj;
and thus requires an elf hash table. */
#define bfd_elf32_bfd_link_hash_table_create _bfd_elf_link_hash_table_create
/* Use an H8 specific linker, not the ELF generic linker. */
#define elf_backend_relocate_section elf32_h8_relocate_section
#define elf_backend_rela_normal 1
+#define elf_backend_can_gc_sections 1
/* And relaxing stuff. */
#define bfd_elf32_bfd_relax_section elf32_h8_relax_section
#define bfd_elf32_bfd_get_relocated_section_contents \
- elf32_h8_get_relocated_section_contents
+ elf32_h8_get_relocated_section_contents
+
+#define elf_symbol_leading_char '_'
+
+#include "elf32-target.h"
+#undef TARGET_BIG_SYM
+#define TARGET_BIG_SYM h8300_elf32_linux_vec
+#undef TARGET_BIG_NAME
+#define TARGET_BIG_NAME "elf32-h8300-linux"
+#undef elf_symbol_leading_char
+#define elf32_bed elf32_h8300_linux_bed
#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff