along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
-
-
/* XXX FIXME: This code is littered with 32bit int, 16bit short, 8bit char
dependencies. As is the gas & simulator code or the v850. */
-
#include "bfd.h"
#include "sysdep.h"
#include "bfdlink.h"
/* sign-extend a 24-bit number */
#define SEXT24(x) ((((x) & 0xffffff) ^ (~ 0x7fffff)) + 0x800000)
-
+
static reloc_howto_type *v850_elf_reloc_type_lookup
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
static void v850_elf_info_to_howto_rel
0, /* dst_mask */
false), /* pcrel_offset */
- /* A PC relative 9 bit branch. */
+ /* A PC relative 9 bit branch. */
HOWTO (R_V850_9_PCREL, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0x00ffffff, /* dst_mask */
true), /* pcrel_offset */
- /* A PC relative 22 bit branch. */
+ /* A PC relative 22 bit branch. */
HOWTO (R_V850_22_PCREL, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0x7f, /* src_mask */
0x7f, /* dst_mask */
false), /* pcrel_offset */
-
+
/* 7 bit offset from the tiny data area pointer. */
HOWTO (R_V850_TDA_7_7_OFFSET, /* type */
0, /* rightshift */
0, /* src_mask */
0, /* dst_mask */
false), /* pcrel_offset */
-
+
};
/* Map BFD reloc types to V850 ELF reloc types. */
if (v850_elf_reloc_map[i].bfd_reloc_val == code)
{
BFD_ASSERT (v850_elf_howto_table[v850_elf_reloc_map[i].elf_reloc_val].type == v850_elf_reloc_map[i].elf_reloc_val);
-
+
return & v850_elf_howto_table[v850_elf_reloc_map[i].elf_reloc_val];
}
}
cache_ptr->howto = &v850_elf_howto_table[r_type];
}
-/* Set the howto pointer for a V850 ELF reloc (type RELA). */
+/* Set the howto pointer for a V850 ELF reloc (type RELA). */
static void
v850_elf_info_to_howto_rela (abfd, cache_ptr, dst)
bfd * abfd ATTRIBUTE_UNUSED;
other = V850_OTHER_SDA;
common = ".scommon";
goto small_data_common;
-
+
case R_V850_ZDA_16_16_SPLIT_OFFSET:
case R_V850_ZDA_16_16_OFFSET:
case R_V850_ZDA_15_16_OFFSET:
other = V850_OTHER_ZDA;
common = ".zcommon";
goto small_data_common;
-
+
case R_V850_TDA_4_5_OFFSET:
case R_V850_TDA_4_4_OFFSET:
case R_V850_TDA_6_8_OFFSET:
bfd_byte * address;
{
hi16s_location * entry = NULL;
-
+
/* Find a free structure. */
if (free_hi16s == NULL)
free_hi16s = (hi16s_location *) bfd_zalloc (abfd, sizeof (* free_hi16s));
entry = free_hi16s;
free_hi16s = free_hi16s->next;
-
+
entry->addend = addend;
entry->address = address;
entry->counter = hi16s_counter ++;
entry->found = false;
entry->next = previous_hi16s;
previous_hi16s = entry;
-
+
/* Cope with wrap around of our counter. */
if (hi16s_counter == 0)
{
hi16s_counter = 0x10000;
}
-
+
return;
}
hi16s_location * previous = NULL;
hi16s_location * prev;
bfd_byte * addr;
-
+
/* Search the table. Record the most recent entry that matches. */
for (entry = previous_hi16s; entry; entry = entry->next)
{
previous = prev;
match = entry;
}
-
+
prev = entry;
}
/* Note that this entry has now been used. */
match->found = true;
-
+
return addr;
-}
+}
/* FIXME: The code here probably ought to be removed and the code in reloc.c
allowed to do its stuff instead. At least for most of the relocs, anwyay. */
{
unsigned long insn;
bfd_signed_vma saddend = (bfd_signed_vma) addend;
-
+
switch (r_type)
{
default:
/* fprintf (stderr, "reloc type %d not SUPPORTED\n", r_type ); */
return bfd_reloc_notsupported;
-
+
case R_V850_32:
bfd_put_32 (abfd, addend, address);
return bfd_reloc_ok;
-
+
case R_V850_22_PCREL:
if (saddend > 0x1fffff || saddend < -0x200000)
return bfd_reloc_overflow;
-
+
if ((addend % 2) != 0)
return bfd_reloc_dangerous;
-
+
insn = bfd_get_32 (abfd, address);
insn &= ~0xfffe003f;
insn |= (((addend & 0xfffe) << 16) | ((addend & 0x3f0000) >> 16));
bfd_put_32 (abfd, insn, address);
return bfd_reloc_ok;
-
+
case R_V850_9_PCREL:
if (saddend > 0xff || saddend < -0x100)
return bfd_reloc_overflow;
-
+
if ((addend % 2) != 0)
return bfd_reloc_dangerous;
-
+
insn = bfd_get_16 (abfd, address);
insn &= ~ 0xf870;
insn |= ((addend & 0x1f0) << 7) | ((addend & 0x0e) << 3);
break;
-
+
case R_V850_HI16:
addend += (bfd_get_16 (abfd, address) << 16);
addend = (addend >> 16);
insn = addend;
break;
-
+
case R_V850_HI16_S:
/* Remember where this relocation took place. */
remember_hi16s_reloc (abfd, addend, address);
addend += (bfd_get_16 (abfd, address) << 16);
addend = (addend >> 16) + ((addend & 0x8000) != 0);
-
- /* This relocation cannot overflow. */
+
+ /* This relocation cannot overflow. */
if (addend > 0x7fff)
addend = 0;
-
+
insn = addend;
break;
-
+
case R_V850_LO16:
/* Calculate the sum of the value stored in the instruction and the
addend and check for overflow from the low 16 bits into the high
------------
0x00116fff = fred + 0x10ffff = 0x7000 + 0x10ffff
-
Overflow can also occur if the computation carries into the 16th bit
and it also results in the 15th bit having the same value as the 15th
bit of the original value. What happens is that the HI16S reloc
+ 0x00006fff
------------
0x00006fff but 'fred + 0x7000' = 0x00016fff
-
+
Note - there is no need to change anything if a carry occurs, and the
15th bit changes its value from being set to being clear, as the HI16S
reloc will have already added in 1 to the high part for us:
#define BIT15_SET(x) ((x) & 0x8000)
#define OVERFLOWS(a,i) ((((a) & 0xffff) + (i)) > 0xffff)
-
+
if ((BIT15_SET (result) && ! BIT15_SET (addend))
|| (OVERFLOWS (addend, insn)
&& ((! BIT15_SET (insn)) || (BIT15_SET (addend)))))
boolean already_updated;
bfd_byte * hi16s_address = find_remembered_hi16s_reloc
(addend, & already_updated);
-
+
/* Amend the matching HI16_S relocation. */
if (hi16s_address != NULL)
{
return bfd_reloc_overflow;
}
}
-
+
/* Do not complain if value has top bit set, as this has been anticipated. */
insn = result & 0xffff;
break;
addend += (char) bfd_get_8 (abfd, address);
saddend = (bfd_signed_vma) addend;
-
+
if (saddend > 0x7f || saddend < -0x80)
return bfd_reloc_overflow;
case R_V850_CALLT_16_16_OFFSET:
addend += bfd_get_16 (abfd, address);
-
+
saddend = (bfd_signed_vma) addend;
-
+
if (saddend > 0xffff || saddend < 0)
return bfd_reloc_overflow;
insn = addend;
break;
-
+
case R_V850_16:
- /* drop through */
+ /* drop through */
case R_V850_SDA_16_16_OFFSET:
case R_V850_ZDA_16_16_OFFSET:
case R_V850_TDA_16_16_OFFSET:
addend += bfd_get_16 (abfd, address);
-
+
saddend = (bfd_signed_vma) addend;
-
+
if (saddend > 0x7fff || saddend < -0x8000)
return bfd_reloc_overflow;
insn = addend;
break;
-
+
case R_V850_SDA_15_16_OFFSET:
case R_V850_ZDA_15_16_OFFSET:
insn = bfd_get_16 (abfd, address);
addend += (insn & 0xfffe);
-
+
saddend = (bfd_signed_vma) addend;
-
+
if (saddend > 0x7ffe || saddend < -0x8000)
return bfd_reloc_overflow;
-
+
if (addend & 1)
return bfd_reloc_dangerous;
-
+
insn = (addend & ~1) | (insn & 1);
break;
-
+
case R_V850_TDA_6_8_OFFSET:
insn = bfd_get_16 (abfd, address);
addend += ((insn & 0x7e) << 1);
-
+
saddend = (bfd_signed_vma) addend;
-
+
if (saddend > 0xfc || saddend < 0)
return bfd_reloc_overflow;
-
+
if (addend & 3)
return bfd_reloc_dangerous;
-
+
insn &= 0xff81;
insn |= (addend >> 1);
break;
-
+
case R_V850_TDA_7_8_OFFSET:
insn = bfd_get_16 (abfd, address);
addend += ((insn & 0x7f) << 1);
-
+
saddend = (bfd_signed_vma) addend;
-
+
if (saddend > 0xfe || saddend < 0)
return bfd_reloc_overflow;
-
+
if (addend & 1)
return bfd_reloc_dangerous;
-
+
insn &= 0xff80;
insn |= (addend >> 1);
break;
-
+
case R_V850_TDA_7_7_OFFSET:
insn = bfd_get_16 (abfd, address);
addend += insn & 0x7f;
-
+
saddend = (bfd_signed_vma) addend;
-
+
if (saddend > 0x7f || saddend < 0)
return bfd_reloc_overflow;
-
+
insn &= 0xff80;
insn |= addend;
break;
-
+
case R_V850_TDA_4_5_OFFSET:
insn = bfd_get_16 (abfd, address);
addend += ((insn & 0xf) << 1);
-
+
saddend = (bfd_signed_vma) addend;
-
+
if (saddend > 0x1e || saddend < 0)
return bfd_reloc_overflow;
-
+
if (addend & 1)
return bfd_reloc_dangerous;
-
+
insn &= 0xfff0;
insn |= (addend >> 1);
break;
-
+
case R_V850_TDA_4_4_OFFSET:
insn = bfd_get_16 (abfd, address);
addend += insn & 0xf;
-
+
saddend = (bfd_signed_vma) addend;
-
+
if (saddend > 0xf || saddend < 0)
return bfd_reloc_overflow;
-
+
insn &= 0xfff0;
insn |= addend;
break;
-
+
case R_V850_ZDA_16_16_SPLIT_OFFSET:
case R_V850_SDA_16_16_SPLIT_OFFSET:
insn = bfd_get_32 (abfd, address);
addend += ((insn & 0xfffe0000) >> 16) + ((insn & 0x20) >> 5);
-
+
saddend = (bfd_signed_vma) addend;
-
+
if (saddend > 0x7fff || saddend < -0x8000)
return bfd_reloc_overflow;
-
+
insn &= 0x0001ffdf;
insn |= (addend & 1) << 5;
insn |= (addend & ~1) << 16;
-
+
bfd_put_32 (abfd, insn, address);
return bfd_reloc_ok;
-
+
case R_V850_CALLT_6_7_OFFSET:
insn = bfd_get_16 (abfd, address);
addend += ((insn & 0x3f) << 1);
-
+
saddend = (bfd_signed_vma) addend;
-
+
if (saddend > 0x7e || saddend < 0)
return bfd_reloc_overflow;
-
+
if (addend & 1)
return bfd_reloc_dangerous;
-
+
insn &= 0xff80;
insn |= (addend >> 1);
break;
char ** err ATTRIBUTE_UNUSED;
{
long relocation;
-
+
/* If there is an output BFD,
and the symbol is not a section name (which is only defined at final link time),
and either we are not putting the addend into the instruction
reloc->address += isection->output_offset;
return bfd_reloc_ok;
}
-#if 0
+#if 0
else if (obfd != NULL)
{
return bfd_reloc_continue;
}
#endif
-
+
/* Catch relocs involving undefined symbols. */
if (bfd_is_und_section (symbol->section)
&& (symbol->flags & BSF_WEAK) == 0
/* Is the address of the relocation really within the section? */
if (reloc->address > isection->_cooked_size)
return bfd_reloc_outofrange;
-
+
/* Work out which section the relocation is targetted at and the
initial relocation command value. */
-
+
/* Get symbol value. (Common symbols are special.) */
if (bfd_is_com_section (symbol->section))
relocation = 0;
else
relocation = symbol->value;
-
+
/* Convert input-section-relative symbol value to absolute + addend. */
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
relocation += reloc->addend;
-
+
if (reloc->howto->pc_relative == true)
{
/* Here the variable relocation holds the final address of the
symbol we are relocating against, plus any addend. */
relocation -= isection->output_section->vma + isection->output_offset;
-
+
/* Deal with pcrel_offset */
relocation -= reloc->address;
}
- reloc->addend = relocation;
+ reloc->addend = relocation;
return bfd_reloc_ok;
}
\f
-/*ARGSUSED*/
static boolean
v850_elf_is_local_label_name (abfd, name)
bfd * abfd ATTRIBUTE_UNUSED;
+ input_section->output_offset);
value -= offset;
break;
-
+
case R_V850_22_PCREL:
value -= (input_section->output_section->vma
+ input_section->output_offset
/* If the sign extension will corrupt the value then we have overflowed. */
if (((value & 0xff000000) != 0x0) && ((value & 0xff000000) != 0xff000000))
return bfd_reloc_overflow;
-
+
value = SEXT24 (value); /* Only the bottom 24 bits of the PC are valid */
break;
-
+
case R_V850_HI16_S:
case R_V850_HI16:
case R_V850_LO16:
case R_V850_8:
break;
- case R_V850_ZDA_15_16_OFFSET:
+ case R_V850_ZDA_15_16_OFFSET:
case R_V850_ZDA_16_16_OFFSET:
case R_V850_ZDA_16_16_SPLIT_OFFSET:
if (sym_sec == NULL)
return bfd_reloc_undefined;
-
+
value -= sym_sec->output_section->vma;
break;
if (sym_sec == NULL)
return bfd_reloc_undefined;
-
+
/* Get the value of __gp. */
h = bfd_link_hash_lookup (info->hash, "__gp", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
{
unsigned long ep;
struct bfd_link_hash_entry * h;
-
+
/* Get the value of __ep. */
h = bfd_link_hash_lookup (info->hash, "__ep", 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 __ep could not be found. */
+ return bfd_reloc_continue; /* Actually this indicates that __ep could not be found. */
ep = (h->u.def.value
+ h->u.def.section->output_section->vma
value -= ep;
}
break;
-
+
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_dangerous + 1); /* Actually this indicates that __ctbp could not be found. */
+ return (bfd_reloc_dangerous + 1); /* Actually this indicates that __ctbp could not be found. */
ctbp = (h->u.def.value
+ h->u.def.section->output_section->vma
value -= ctbp;
}
break;
-
+
case R_V850_CALLT_16_16_OFFSET:
{
unsigned long ctbp;
if (sym_sec == NULL)
return bfd_reloc_undefined;
-
+
/* Get the value of __ctbp. */
h = bfd_link_hash_lookup (info->hash, "__ctbp", false, false, true);
if (h == (struct bfd_link_hash_entry *) NULL
value -= (ctbp - sym_sec->output_section->vma);
}
break;
-
+
case R_V850_NONE:
case R_V850_GNU_VTINHERIT:
case R_V850_GNU_VTENTRY:
}
/* Perform the relocation. */
- return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data);
+ return v850_elf_perform_relocation (input_bfd, r_type, value + addend, hit_data);
}
\f
return false;
}
-
+
/* Reset the list of remembered HI16S relocs to empty. */
free_hi16s = previous_hi16s;
previous_hi16s = NULL;
hi16s_counter = 0;
-
+
rel = relocs;
relend = relocs + input_section->reloc_count;
for (; rel < relend; 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)
{
{
if (! ((*info->callbacks->undefined_symbol)
(info, h->root.root.string, input_bfd,
- input_section, rel->r_offset)))
+ input_section, rel->r_offset, true)))
return false;
#if 0
fprintf (stderr, "unknown: name: %s\n", h->root.root.string);
case bfd_reloc_undefined:
if (! ((*info->callbacks->undefined_symbol)
(info, name, input_bfd, input_section,
- rel->r_offset)))
+ rel->r_offset, true)))
return false;
break;
case (bfd_reloc_dangerous + 1):
msg = _("could not locate special linker symbol __ctbp");
goto common_error;
-
+
default:
msg = _("internal error: unknown error");
/* fall through */
elf_elfheader (abfd)->e_flags |= val;
}
-/* Function to keep V850 specific file flags. */
+/* Function to keep V850 specific file flags. */
static boolean
v850_elf_set_private_flags (abfd, flags)
bfd * abfd;
to the default values. */
if (bfd_get_arch_info (ibfd)->the_default)
return true;
-
+
elf_flags_init (obfd) = true;
elf_elfheader (obfd)->e_flags = in_flags;
PTR ptr;
{
FILE * file = (FILE *) ptr;
-
+
BFD_ASSERT (abfd != NULL && ptr != NULL);
-
+
_bfd_elf_print_private_bfd_data (abfd, ptr);
-
+
/* xgettext:c-format */
fprintf (file, _("private flags = %lx: "), elf_elfheader (abfd)->e_flags);
-
+
switch (elf_elfheader (abfd)->e_flags & EF_V850_ARCH)
{
default:
case E_V850E_ARCH: fprintf (file, _("v850e architecture")); break;
case E_V850EA_ARCH: fprintf (file, _("v850ea architecture")); break;
}
-
+
fputc ('\n', file);
-
+
return true;
}
static asymbol v850_elf_zcom_symbol;
static asymbol * v850_elf_zcom_symbol_ptr;
-
/* Given a BFD section, try to locate the corresponding ELF section
index. */
*retval = SHN_V850_ZCOMMON;
else
return false;
-
+
return true;
}
{
elf_symbol_type * elfsym = (elf_symbol_type *) asym;
unsigned short index;
-
+
index = elfsym->internal_elf_sym.st_shndx;
/* If the section index is an "ordinary" index, then it may
refer to a v850 specific section created by the assembler.
Check the section's type and change the index it matches.
-
+
FIXME: Should we alter the st_shndx field as well ? */
-
+
if (index < elf_elfheader(abfd)[0].e_shnum)
switch (elf_elfsections(abfd)[index]->sh_type)
{
case SHT_V850_SCOMMON:
index = SHN_V850_SCOMMON;
break;
-
+
case SHT_V850_TCOMMON:
index = SHN_V850_TCOMMON;
break;
-
+
case SHT_V850_ZCOMMON:
index = SHN_V850_ZCOMMON;
break;
-
+
default:
break;
}
-
+
switch (index)
{
case SHN_V850_SCOMMON:
asym->section = & v850_elf_scom_section;
asym->value = elfsym->internal_elf_sym.st_size;
break;
-
+
case SHN_V850_TCOMMON:
if (v850_elf_tcom_section.name == NULL)
{
/* Hook called by the linker routine which adds symbols from an object
file. We must handle the special v850 section numbers here. */
-/*ARGSUSED*/
static boolean
v850_elf_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
bfd * abfd;
bfd_vma * valp;
{
int index = sym->st_shndx;
-
+
/* If the section index is an "ordinary" index, then it may
refer to a v850 specific section created by the assembler.
Check the section's type and change the index it matches.
-
+
FIXME: Should we alter the st_shndx field as well ? */
-
+
if (index < elf_elfheader(abfd)[0].e_shnum)
switch (elf_elfsections(abfd)[index]->sh_type)
{
case SHT_V850_SCOMMON:
index = SHN_V850_SCOMMON;
break;
-
+
case SHT_V850_TCOMMON:
index = SHN_V850_TCOMMON;
break;
-
+
case SHT_V850_ZCOMMON:
index = SHN_V850_ZCOMMON;
break;
-
+
default:
break;
}
-
+
switch (index)
{
case SHN_V850_SCOMMON:
(*secp)->flags |= SEC_IS_COMMON;
*valp = sym->st_size;
break;
-
+
case SHN_V850_TCOMMON:
*secp = bfd_make_section_old_way (abfd, ".tcommon");
(*secp)->flags |= SEC_IS_COMMON;
*valp = sym->st_size;
break;
-
+
case SHN_V850_ZCOMMON:
*secp = bfd_make_section_old_way (abfd, ".zcommon");
(*secp)->flags |= SEC_IS_COMMON;
/* If we see a common symbol, which implies a relocatable link, then
if a symbol was in a special common section in an input file, mark
it as a special common in the output file. */
-
+
if (sym->st_shndx == SHN_COMMON)
{
if (strcmp (input_sec->name, ".scommon") == 0)
}
else if (strcmp (name, ".zcommon") == 0)
hdr->sh_type = SHT_V850_ZCOMMON;
-
+
return true;
}
-
\f
#define TARGET_LITTLE_SYM bfd_elf32_v850_vec
#define TARGET_LITTLE_NAME "elf32-v850"
#define ELF_ARCH bfd_arch_v850
#define ELF_MACHINE_CODE EM_CYGNUS_V850
#define ELF_MAXPAGESIZE 0x1000
-
+
#define elf_info_to_howto v850_elf_info_to_howto_rela
#define elf_info_to_howto_rel v850_elf_info_to_howto_rel
#define elf_backend_can_gc_sections 1
-
#define bfd_elf32_bfd_is_local_label_name v850_elf_is_local_label_name
#define bfd_elf32_bfd_reloc_type_lookup v850_elf_reloc_type_lookup
#define bfd_elf32_bfd_copy_private_bfd_data v850_elf_copy_private_bfd_data
projects / deliverable / binutils-gdb.git / blobdiff