/* BFD back-end for Renesas H8/300 ELF binaries.
- Copyright 1993-2013 Free Software Foundation, Inc.
+ Copyright (C) 1993-2020 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/h8.h"
+#include "cpu-h8300.h"
static reloc_howto_type *elf32_h8_reloc_type_lookup
(bfd *abfd, bfd_reloc_code_real_type code);
-static void elf32_h8_info_to_howto
+static bfd_boolean elf32_h8_info_to_howto
(bfd *, arelent *, Elf_Internal_Rela *);
-static void elf32_h8_info_to_howto_rel
+static bfd_boolean elf32_h8_info_to_howto_rel
(bfd *, arelent *, Elf_Internal_Rela *);
static unsigned long elf32_h8_mach (flagword);
-static void elf32_h8_final_write_processing (bfd *, bfd_boolean);
static bfd_boolean elf32_h8_object_p (bfd *);
-static bfd_boolean elf32_h8_merge_private_bfd_data (bfd *, 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
#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 */
0, /* bitpos */
return NULL;
}
-static void
+static bfd_boolean
elf32_h8_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
Elf_Internal_Rela *elf_reloc)
{
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 (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
+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.
arelent bfd_reloc;
reloc_howto_type *howto;
- elf32_h8_info_to_howto (input_bfd, &bfd_reloc, rel);
+ if (! elf32_h8_info_to_howto (input_bfd, &bfd_reloc, rel))
+ continue;
howto = bfd_reloc.howto;
r_symndx = ELF32_R_SYM (rel->r_info);
}
else
{
- bfd_boolean unresolved_reloc, warned;
+ 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);
+ 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 (info->relocatable)
+ if (bfd_link_relocatable (info))
continue;
r = elf32_h8_final_link_relocate (r_type, input_bfd, output_bfd,
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, (h ? &h->root : NULL), 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;
}
}
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 (bfd *abfd,
- bfd_boolean linker ATTRIBUTE_UNUSED)
+static bfd_boolean
+elf32_h8_final_write_processing (bfd *abfd)
{
unsigned long val;
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
time is the architecture/machine information. */
static bfd_boolean
-elf32_h8_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
+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;
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
+ 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
+ mov.b:16 -> mov.b:8 2 bytes
+ mov.b:24/32 -> mov.b:8 4 bytes
- bset:24/32 -> bset:16 2 bytes
+ bset:24/32 -> bset:16 2 bytes
(also applicable to other bit manipulation instructions)
- 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. */
+ mov.[bwl] @(displ:24/32+ERx) -> mov.[bwl] @(displ:16+ERx) 4 bytes. */
static bfd_boolean
elf32_h8_relax_section (bfd *abfd, asection *sec,
/* 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->relocatable
+ if (bfd_link_relocatable (link_info)
|| (sec->flags & SEC_RELOC) == 0
|| sec->reloc_count == 0
|| (sec->flags & SEC_CODE) == 0)
{
arelent bfd_reloc;
- elf32_h8_info_to_howto (abfd, &bfd_reloc, irel);
+ 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;
-
+
switch(ELF32_R_TYPE (irel->r_info))
{
case R_H8_DIR24R8:
&& 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;
}
reloc_howto_type *h;
bfd_vma last_reloc_size;
- elf32_h8_info_to_howto (abfd, &bfd_reloc, last_reloc);
+ 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
reloc_howto_type *h;
bfd_vma next_reloc_size;
- elf32_h8_info_to_howto (abfd, &bfd_reloc, next_reloc);
+ 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
}
}
- if (internal_relocs != NULL
- && elf_section_data (sec)->relocs != internal_relocs)
+ if (elf_section_data (sec)->relocs != internal_relocs)
free (internal_relocs);
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;
}
{
/* 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;
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
/* 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