/* BFD back-end for Renesas H8/300 ELF binaries.
- Copyright 1993, 1995, 1998, 1999, 2001, 2002, 2003, 2004
- Free Software Foundation, Inc.
+ Copyright 1993, 1995, 1998, 1999, 2001, 2002, 2003, 2004, 2005, 2006,
+ 2007 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
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. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
#include "bfd.h"
#include "sysdep.h"
static bfd_byte *elf32_h8_get_relocated_section_contents
(bfd *, struct bfd_link_info *, struct bfd_link_order *,
bfd_byte *, bfd_boolean, asymbol **);
-static asection *elf32_h8_gc_mark_hook
- (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
- struct elf_link_hash_entry *, Elf_Internal_Sym *);
-static bfd_boolean elf32_h8_gc_sweep_hook
- (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
static bfd_reloc_status_type elf32_h8_final_link_relocate
(unsigned long, bfd *, bfd *, asection *,
bfd_byte *, bfd_vma, bfd_vma, bfd_vma,
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;
struct elf_link_hash_entry **sym_hashes;
Elf_Internal_Rela *rel, *relend;
- if (info->relocatable)
- 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;
+
+ elf32_h8_info_to_howto (input_bfd, &bfd_reloc, rel);
+ 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;
}
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;
+
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned);
}
+ if (sec != NULL && elf_discarded_section (sec))
+ {
+ /* For relocs against symbols from removed linkonce sections,
+ or sections discarded by a linker script, we just want the
+ section contents zeroed. Avoid any special processing. */
+ _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
+ rel->r_info = 0;
+ rel->r_addend = 0;
+ continue;
+ }
+
+ if (info->relocatable)
+ 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;
{
case bfd_reloc_overflow:
if (! ((*info->callbacks->reloc_overflow)
- (info, name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset)))
+ (info, (h ? &h->root : NULL), name, howto->name,
+ (bfd_vma) 0, input_bfd, input_section,
+ rel->r_offset)))
return FALSE;
break;
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.[bwl]:24/32 -> mov.[bwl]:16 2 bytes */
static bfd_boolean
|| (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;
/* Get a copy of the native relocations. */
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;
}
}
the linker is run. */
switch (ELF32_R_TYPE (irel->r_info))
{
- /* Try to turn a 24 bit absolute branch/call into an 8 bit
+ /* Try to turn a 24-bit absolute branch/call into an 8-bit
pc-relative branch/call. */
case R_H8_DIR24R8:
{
}
if (code == 0x5e)
+ /* This is jsr. */
bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 1);
else if (code == 0x5a)
+ /* This is jmp. */
bfd_put_8 (abfd, 0x40, contents + irel->r_offset - 1);
else
abort ();
break;
}
- /* Try to turn a 16bit pc-relative branch into a 8bit pc-relative
+ /* Try to turn a 16-bit pc-relative branch into a 8-bit pc-relative
branch. */
case R_H8_PCREL16:
{
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 fisrt 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);
}
else if (code == 0x5c)
+ /* This is bsr. */
bfd_put_8 (abfd, 0x55, contents + irel->r_offset - 2);
else
abort ();
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;
/* Get the opcode. */
code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
- /* Sanity check. */
+ /* All instructions with R_H8_DIR16A8 start with
+ 0x6a. */
if (code != 0x6a)
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;
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:
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;
/* Get the opcode. */
code = bfd_get_8 (abfd, contents + irel->r_offset - 2);
- /* Sanity check. */
+ /* All instructions with R_H8_DIR24A8 start with
+ 0x6a. */
if (code != 0x6a)
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:
}
}
- /* Fall through. */
+ /* Fall through. */
+
+ /* This is a 24-/32-bit absolute address in one of the
+ following instructions:
- /* This is a 24/32bit absolute address in a "mov" insn, which may
- become a 16-bit absolute address if it is in the right range. */
+ "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;
/* Get the opcode. */
code = bfd_get_8 (abfd, contents + irel->r_offset - 1);
- /* We just need to turn off bit 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);
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++)
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)
return NULL;
}
-static asection *
-elf32_h8_gc_mark_hook (asection *sec,
- struct bfd_link_info *info ATTRIBUTE_UNUSED,
- Elf_Internal_Rela *rel ATTRIBUTE_UNUSED,
- struct elf_link_hash_entry *h,
- Elf_Internal_Sym *sym)
-{
- if (h != NULL)
- {
- switch (h->root.type)
- {
- case bfd_link_hash_defined:
- case bfd_link_hash_defweak:
- return h->root.u.def.section;
-
- case bfd_link_hash_common:
- return h->root.u.c.p->section;
-
- default:
- break;
- }
- }
- else
- return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
- return NULL;
-}
-
-static bfd_boolean
-elf32_h8_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED,
- struct bfd_link_info *info ATTRIBUTE_UNUSED,
- asection *sec ATTRIBUTE_UNUSED,
- const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED)
-{
- return TRUE;
-}
-
#define TARGET_BIG_SYM bfd_elf32_h8300_vec
#define TARGET_BIG_NAME "elf32-h8300"
elf32_h8_object_p
#define bfd_elf32_bfd_merge_private_bfd_data \
elf32_h8_merge_private_bfd_data
-#define elf_backend_gc_mark_hook elf32_h8_gc_mark_hook
-#define elf_backend_gc_sweep_hook elf32_h8_gc_sweep_hook
/* ??? 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
projects / deliverable / binutils-gdb.git / blobdiff