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Added support for the call table relocations.

This commit is contained in:
Nick Clifton 1997-09-17 23:50:21 +00:00
parent 2001e533ff
commit 9420c20ac4
3 changed files with 144 additions and 17 deletions
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9
bfd/ChangeLog
View File

@ -1,4 +1,13 @@
Wed Sep 17 09:54:51 1997 Nick Clifton <nickc@cygnus.com>
start-sanitize-v850e
* elf32-v850.c (v850_elf_final_link_relocate, v850_elf_reloc,
v850_elf_check_relocs, v850_elf_reloc_map, v850_elf_howto_table):
Add support for the CALLT relocs.
* reloc.c (COMMENT): Add BFD_RELOC_V850_CALLT_6_7_OFFSET and
BFD_RELOC_V850_CALLT_16_16_OFFSET.
end-sanitize-v850e
* elf32-v850.c (v850_elf_final_link_relocate): Add checks to catch
relocations against non-existant symbols.

6
bfd/bfd-in2.h
View File

@ -2008,6 +2008,12 @@ bits placed non-contigously in the instruction. */
/* This is a 16 bit offset from the zero data area pointer, with the
bits placed non-contigously in the instruction. */
BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET,
/* This is a 6 bit offset from the call table base pointer. */
BFD_RELOC_V850_CALLT_6_7_OFFSET,
/* This is a 16 bit offset from the call table base pointer. */
BFD_RELOC_V850_CALLT_16_16_OFFSET,
/* end-sanitize-v850e */

146
bfd/elf32-v850.c
View File

@ -370,6 +370,36 @@ static reloc_howto_type v850_elf_howto_table[] =
0xfffe0020, /* dst_mask */
false), /* pcrel_offset */
/* 6 bit offset from the call table base pointer. */
HOWTO (R_V850_CALLT_6_7_OFFSET, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
7, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_CALLT_6_7_OFFSET", /* name */
false, /* partial_inplace */
0x3f, /* src_mask */
0x3f, /* dst_mask */
false), /* pcrel_offset */
/* 16 bit offset from the call table base pointer. */
HOWTO (R_V850_CALLT_16_16_OFFSET, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
v850_elf_reloc, /* special_function */
"R_V850_CALLT_16_16_OFFSET", /* name */
false, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
false), /* pcrel_offset */
/* end-sanitize-v850e */
};
@ -396,15 +426,17 @@ static const struct v850_elf_reloc_map v850_elf_reloc_map[] =
{ BFD_RELOC_V850_SDA_15_16_OFFSET, R_V850_SDA_15_16_OFFSET },
{ BFD_RELOC_V850_ZDA_16_16_OFFSET, R_V850_ZDA_16_16_OFFSET },
{ BFD_RELOC_V850_ZDA_15_16_OFFSET, R_V850_ZDA_15_16_OFFSET },
{ BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET },
{ BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET },
{ BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET },
{ BFD_RELOC_V850_TDA_6_8_OFFSET, R_V850_TDA_6_8_OFFSET },
{ BFD_RELOC_V850_TDA_7_8_OFFSET, R_V850_TDA_7_8_OFFSET },
{ BFD_RELOC_V850_TDA_7_7_OFFSET, R_V850_TDA_7_7_OFFSET },
{ BFD_RELOC_V850_TDA_16_16_OFFSET, R_V850_TDA_16_16_OFFSET },
/* start-sanitize-v850e */
{ BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET },
{ BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET },
{ BFD_RELOC_V850_TDA_4_5_OFFSET, R_V850_TDA_4_5_OFFSET },
{ BFD_RELOC_V850_TDA_4_4_OFFSET, R_V850_TDA_4_4_OFFSET },
{ BFD_RELOC_V850_SDA_16_16_SPLIT_OFFSET, R_V850_SDA_16_16_SPLIT_OFFSET },
{ BFD_RELOC_V850_ZDA_16_16_SPLIT_OFFSET, R_V850_ZDA_16_16_SPLIT_OFFSET },
{ BFD_RELOC_V850_CALLT_6_7_OFFSET, R_V850_CALLT_6_7_OFFSET },
{ BFD_RELOC_V850_CALLT_16_16_OFFSET, R_V850_CALLT_16_16_OFFSET },
/* end-sanitize-v850e */
};
@ -412,8 +444,8 @@ static const struct v850_elf_reloc_map v850_elf_reloc_map[] =
/* Map a bfd relocation into the appropriate howto structure */
static reloc_howto_type *
v850_elf_reloc_type_lookup (abfd, code)
bfd *abfd;
bfd_reloc_code_real_type code;
bfd * abfd;
bfd_reloc_code_real_type code;
{
unsigned int i;
@ -436,9 +468,9 @@ v850_elf_reloc_type_lookup (abfd, code)
/* Set the howto pointer for an V850 ELF reloc. */
static void
v850_elf_info_to_howto_rel (abfd, cache_ptr, dst)
bfd *abfd;
arelent *cache_ptr;
Elf32_Internal_Rel *dst;
bfd * abfd;
arelent * cache_ptr;
Elf32_Internal_Rel * dst;
{
unsigned int r_type;
@ -454,10 +486,10 @@ v850_elf_info_to_howto_rel (abfd, cache_ptr, dst)
static boolean
v850_elf_check_relocs (abfd, info, sec, relocs)
bfd *abfd;
struct bfd_link_info *info;
asection *sec;
const Elf_Internal_Rela *relocs;
bfd * abfd;
struct bfd_link_info * info;
asection * sec;
const Elf_Internal_Rela * relocs;
{
boolean ret = true;
bfd *dynobj;
@ -509,6 +541,10 @@ v850_elf_check_relocs (abfd, info, sec, relocs)
case R_V850_32:
case R_V850_16:
case R_V850_8:
/* start-sanitize-v850e */
case R_V850_CALLT_6_7_OFFSET:
case R_V850_CALLT_16_16_OFFSET:
/* end-sanitize-v850e */
break;
/* start-sanitize-v850e */
@ -832,6 +868,25 @@ v850_elf_reloc (abfd, reloc, symbol, data, isection, obfd, err)
bfd_put_32 (abfd, insn, (bfd_byte *)data + reloc->address);
return bfd_reloc_ok;
case R_V850_CALLT_6_7_OFFSET:
if ((long) relocation > 0x7e || (long) relocation < 0)
return bfd_reloc_overflow;
if (relocation & 1)
return bfd_reloc_dangerous;
insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc->address);
insn &= 0xff80;
insn |= (relocation >> 1);
bfd_put_16 (abfd, insn, (bfd_byte *)data + reloc->address);
return bfd_reloc_ok;
case R_V850_CALLT_16_16_OFFSET:
bfd_put_16 (abfd, relocation, (bfd_byte *)data + reloc->address);
return bfd_reloc_ok;
/* end-sanitize-v850e */
}
@ -842,8 +897,8 @@ v850_elf_reloc (abfd, reloc, symbol, data, isection, obfd, err)
/*ARGSUSED*/
static boolean
v850_elf_is_local_label_name (abfd, name)
bfd *abfd;
const char *name;
bfd * abfd;
const char * name;
{
return ((name[0] == '.' && (name[1] == 'L' || name[1] == '.'))
|| (name[0] == '_' && name[1] == '.' && name[2] == 'L'
@ -1286,8 +1341,65 @@ v850_elf_final_link_relocate (howto, input_bfd, output_bfd,
bfd_put_32 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
/* end-sanitize-v850e */
case R_V850_CALLT_6_7_OFFSET:
{
unsigned long ctbp;
struct bfd_link_hash_entry * h;
/* Get the value of __ctbp. */
h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return bfd_reloc_continue; /* Actually this indicates that __ctbp could not be found. */
ctbp = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= ctbp;
insn = bfd_get_16 (input_bfd, hit_data);
value += ((insn & 0x3f) << 1);
if ((long) value > 0x7e || (long) value < 0)
return bfd_reloc_overflow;
insn &= 0xff80;
insn |= (value >> 1);
bfd_put_16 (input_bfd, insn, hit_data);
return bfd_reloc_ok;
}
case R_V850_CALLT_16_16_OFFSET:
if (sym_sec == NULL)
return bfd_reloc_undefined;
{
unsigned long ctbp;
struct bfd_link_hash_entry * h;
/* Get the value of __ctbp. */
h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
|| h->type != bfd_link_hash_defined)
return bfd_reloc_other;
ctbp = (h->u.def.value
+ h->u.def.section->output_section->vma
+ h->u.def.section->output_offset);
value -= sym_sec->output_section->vma;
value -= (ctbp - sym_sec->output_section->vma);
value += (short) bfd_get_16 (input_bfd, hit_data);
if ((long) value > 0xffff || (long) value < 0)
return bfd_reloc_overflow;
bfd_put_16 (input_bfd, value, hit_data);
return bfd_reloc_ok;
}
/* end-sanitize-v850e */
case R_V850_NONE:
return bfd_reloc_ok;