#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/ms1.h"
static reloc_howto_type * ms1_reloc_type_lookup
(bfd *, bfd_reloc_code_real_type);
static void ms1_info_to_howto_rela
(bfd *, arelent *, Elf_Internal_Rela *);
static bfd_reloc_status_type ms1_elf_relocate_hi16
(bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma);
static bfd_reloc_status_type ms1_final_link_relocate
(reloc_howto_type *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, bfd_vma);
static bfd_boolean ms1_elf_relocate_section
(bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
static reloc_howto_type ms1_elf_howto_table [] =
{
HOWTO (R_MS1_NONE,
0,
2,
32,
FALSE,
0,
complain_overflow_dont,
bfd_elf_generic_reloc,
"R_MS1_NONE",
FALSE,
0 ,
0,
FALSE),
HOWTO (R_MS1_16,
0,
2,
16,
FALSE,
0,
complain_overflow_dont,
bfd_elf_generic_reloc,
"R_MS1_16",
FALSE,
0 ,
0xffff,
FALSE),
HOWTO (R_MS1_32,
0,
2,
32,
FALSE,
0,
complain_overflow_dont,
bfd_elf_generic_reloc,
"R_MS1_32",
FALSE,
0 ,
0xffffffff,
FALSE),
HOWTO (R_MS1_32_PCREL,
0,
2,
32,
TRUE,
0,
complain_overflow_dont,
bfd_elf_generic_reloc,
"R_MS1_32_PCREL",
FALSE,
0 ,
0xffffffff,
TRUE),
HOWTO (R_MS1_PC16,
0,
2,
16,
TRUE,
0,
complain_overflow_signed,
bfd_elf_generic_reloc,
"R_MS1_PC16",
FALSE,
0,
0xffff,
TRUE),
HOWTO (R_MS1_HI16,
0,
2,
16,
FALSE,
0,
complain_overflow_dont,
bfd_elf_generic_reloc,
"R_MS1_HI16",
FALSE,
0xffff0000,
0xffff0000,
FALSE),
HOWTO (R_MS1_LO16,
0,
2,
16,
FALSE,
0,
complain_overflow_dont,
bfd_elf_generic_reloc,
"R_MS1_LO16",
FALSE,
0xffff,
0xffff,
FALSE),
};
static reloc_howto_type *
ms1_reloc_type_lookup
(bfd * abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
switch (code)
{
case BFD_RELOC_NONE:
return &ms1_elf_howto_table[ (int) R_MS1_NONE];
case BFD_RELOC_16:
return &ms1_elf_howto_table[ (int) R_MS1_16];
case BFD_RELOC_32:
return &ms1_elf_howto_table[ (int) R_MS1_32];
case BFD_RELOC_32_PCREL:
return &ms1_elf_howto_table[ (int) R_MS1_32_PCREL];
case BFD_RELOC_16_PCREL:
return &ms1_elf_howto_table[ (int) R_MS1_PC16];
case BFD_RELOC_HI16:
return &ms1_elf_howto_table[ (int) R_MS1_HI16];
case BFD_RELOC_LO16:
return &ms1_elf_howto_table[ (int) R_MS1_LO16];
default:
return NULL;
}
return NULL;
}
bfd_reloc_status_type
ms1_elf_relocate_hi16
(bfd * input_bfd,
Elf_Internal_Rela * relhi,
bfd_byte * contents,
bfd_vma value)
{
bfd_vma insn;
insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
value += relhi->r_addend;
value >>= 16;
insn = ((insn & ~0xFFFF) | value);
bfd_put_32 (input_bfd, insn, contents + relhi->r_offset);
return bfd_reloc_ok;
}
static void
ms1_info_to_howto_rela
(bfd * abfd ATTRIBUTE_UNUSED,
arelent * cache_ptr,
Elf_Internal_Rela * dst)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
cache_ptr->howto = & ms1_elf_howto_table [r_type];
}
static bfd_reloc_status_type
ms1_final_link_relocate
(reloc_howto_type * howto,
bfd * input_bfd,
asection * input_section,
bfd_byte * contents,
Elf_Internal_Rela * rel,
bfd_vma relocation)
{
return _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
relocation, rel->r_addend);
}
static bfd_boolean
ms1_elf_relocate_section
(bfd * output_bfd ATTRIBUTE_UNUSED,
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;
Elf_Internal_Rela * relend;
symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
relend = relocs + input_section->reloc_count;
for (rel = relocs; rel < relend; rel ++)
{
reloc_howto_type * howto;
unsigned long r_symndx;
Elf_Internal_Sym * sym;
asection * sec;
struct elf_link_hash_entry * h;
bfd_vma relocation;
bfd_reloc_status_type r;
const char * name = NULL;
int r_type;
r_type = ELF32_R_TYPE (rel->r_info);
r_symndx = ELF32_R_SYM (rel->r_info);
howto = ms1_elf_howto_table + ELF32_R_TYPE (rel->r_info);
h = NULL;
sym = NULL;
sec = NULL;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections [r_symndx];
relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
name = bfd_elf_string_from_elf_section
(input_bfd, symtab_hdr->sh_link, sym->st_name);
name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
}
else
{
bfd_boolean unresolved_reloc;
bfd_boolean warned;
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
h, sec, relocation,
unresolved_reloc, warned);
name = h->root.root.string;
}
switch (r_type)
{
case R_MS1_HI16:
r = ms1_elf_relocate_hi16 (input_bfd, rel, contents, relocation);
break;
default:
r = ms1_final_link_relocate (howto, input_bfd, input_section,
contents, rel, relocation);
break;
}
if (r != bfd_reloc_ok)
{
const char * msg = (const char *) NULL;
switch (r)
{
case bfd_reloc_overflow:
r = 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:
r = info->callbacks->undefined_symbol
(info, name, input_bfd, input_section, rel->r_offset, TRUE);
break;
case bfd_reloc_outofrange:
msg = _("internal error: out of range error");
break;
case bfd_reloc_dangerous:
msg = _("internal error: dangerous relocation");
break;
default:
msg = _("internal error: unknown error");
break;
}
if (msg)
r = info->callbacks->warning
(info, msg, name, input_bfd, input_section, rel->r_offset);
if (! r)
return FALSE;
}
}
return TRUE;
}
static asection *
ms1_elf_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
{
if (!(elf_bad_symtab (sec->owner)
&& ELF_ST_BIND (sym->st_info) != STB_LOCAL)
&& ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
&& sym->st_shndx != SHN_COMMON))
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
}
return NULL;
}
static bfd_boolean
ms1_elf_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;
}
static bfd_boolean
ms1_elf_check_relocs
(bfd * abfd,
struct bfd_link_info * info,
asection * sec,
const Elf_Internal_Rela * relocs)
{
Elf_Internal_Shdr * symtab_hdr;
struct elf_link_hash_entry ** sym_hashes;
struct elf_link_hash_entry ** sym_hashes_end;
const Elf_Internal_Rela * rel;
const Elf_Internal_Rela * rel_end;
if (info->relocatable)
return TRUE;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (abfd);
sym_hashes_end = sym_hashes + symtab_hdr->sh_size / sizeof (Elf32_External_Sym);
if (!elf_bad_symtab (abfd))
sym_hashes_end -= symtab_hdr->sh_info;
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
{
struct elf_link_hash_entry *h;
unsigned long r_symndx;
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx < symtab_hdr->sh_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;
}
}
return TRUE;
}
static int
elf32_ms1_machine (bfd *abfd)
{
switch (elf_elfheader (abfd)->e_flags & EF_MS1_CPU_MASK)
{
case EF_MS1_CPU_MRISC: return bfd_mach_ms1;
case EF_MS1_CPU_MRISC2: return bfd_mach_mrisc2;
}
return bfd_mach_ms1;
}
static bfd_boolean
ms1_elf_object_p (bfd * abfd)
{
bfd_default_set_arch_mach (abfd, bfd_arch_ms1, elf32_ms1_machine (abfd));
return TRUE;
}
static bfd_boolean
ms1_elf_set_private_flags (bfd * abfd,
flagword flags)
{
elf_elfheader (abfd)->e_flags = flags;
elf_flags_init (abfd) = TRUE;
return TRUE;
}
static bfd_boolean
ms1_elf_copy_private_bfd_data (bfd * ibfd, bfd * obfd)
{
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
return TRUE;
BFD_ASSERT (!elf_flags_init (obfd)
|| elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
elf_flags_init (obfd) = TRUE;
return TRUE;
}
static bfd_boolean
ms1_elf_merge_private_bfd_data (bfd * ibfd, bfd * obfd)
{
flagword old_flags, new_flags;
bfd_boolean error = FALSE;
static bfd * last_ibfd = 0;
if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
return FALSE;
if (strcmp (ibfd->arch_info->arch_name, "ms1") != 0)
return TRUE;
if (strcmp (obfd->arch_info->arch_name, "ms1") != 0)
return TRUE;
new_flags = elf_elfheader (ibfd)->e_flags;
old_flags = elf_elfheader (obfd)->e_flags;
#ifdef DEBUG
_bfd_error_handler ("%B: old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s",
ibfd, old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no");
#endif
elf_flags_init (obfd) = TRUE;
if ((new_flags & EF_MS1_CPU_MASK) == EF_MS1_CPU_MRISC2)
{
elf_elfheader (obfd)->e_flags = new_flags;
last_ibfd = ibfd;
obfd->arch_info = ibfd->arch_info;
}
return !error;
}
static bfd_boolean
ms1_elf_print_private_bfd_data (bfd * abfd, void * ptr)
{
FILE * file = (FILE *) ptr;
flagword flags;
BFD_ASSERT (abfd != NULL && ptr != NULL);
_bfd_elf_print_private_bfd_data (abfd, ptr);
flags = elf_elfheader (abfd)->e_flags;
fprintf (file, _("private flags = 0x%lx:"), (long)flags);
switch (flags & EF_MS1_CPU_MASK)
{
default:
case EF_MS1_CPU_MRISC: fprintf (file, " ms1-16-002"); break;
case EF_MS1_CPU_MRISC2: fprintf (file, " ms1-16-003"); break;
}
fputc ('\n', file);
return TRUE;
}
#define TARGET_BIG_SYM bfd_elf32_ms1_vec
#define TARGET_BIG_NAME "elf32-ms1"
#define ELF_ARCH bfd_arch_ms1
#define ELF_MACHINE_CODE EM_MS1
#define ELF_MAXPAGESIZE 1
#define elf_info_to_howto_rel NULL
#define elf_info_to_howto ms1_info_to_howto_rela
#define elf_backend_relocate_section ms1_elf_relocate_section
#define bfd_elf32_bfd_reloc_type_lookup ms1_reloc_type_lookup
#define elf_backend_gc_mark_hook ms1_elf_gc_mark_hook
#define elf_backend_gc_sweep_hook ms1_elf_gc_sweep_hook
#define elf_backend_check_relocs ms1_elf_check_relocs
#define elf_backend_object_p ms1_elf_object_p
#define elf_backend_rela_normal 1
#define elf_backend_can_gc_sections 1
#define bfd_elf32_bfd_set_private_flags ms1_elf_set_private_flags
#define bfd_elf32_bfd_copy_private_bfd_data ms1_elf_copy_private_bfd_data
#define bfd_elf32_bfd_merge_private_bfd_data ms1_elf_merge_private_bfd_data
#define bfd_elf32_bfd_print_private_bfd_data ms1_elf_print_private_bfd_data
#include "elf32-target.h"