mirrors/binutils-gdb
0
0
Fork 0
mirror of https://sourceware.org/git/binutils-gdb.git synced 2024-12-15 13:23:29 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity
b90efa5b79
binutils-gdb/bfd/elf32-visium.c
Alan Modra b90efa5b79 ChangeLog rotatation and copyright year update
2015-01-02 00:53:45 +10:30

904 lines
27 KiB
C
Raw Blame History

/* Visium-specific support for 32-bit ELF.
Copyright (C) 2003-2015 Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
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., 51 Franklin Street - Fifth Floor,
Boston, MA 02110-1301, USA. */
#include "sysdep.h"
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/visium.h"
static bfd_reloc_status_type visium_elf_howto_parity_reloc
(bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **);
static reloc_howto_type visium_elf_howto_table[] = {
/* This reloc does nothing. */
HOWTO (R_VISIUM_NONE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_VISIUM_NONE", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 8 bit absolute relocation. */
HOWTO (R_VISIUM_8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_VISIUM_8", /* name */
FALSE, /* partial_inplace */
0x00, /* src_mask */
0xff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 16 bit absolute relocation. */
HOWTO (R_VISIUM_16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_VISIUM_16", /* name */
FALSE, /* partial_inplace */
0x0000, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 32 bit absolute relocation. */
HOWTO (R_VISIUM_32, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_VISIUM_32", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 8 bit PC relative relocation. */
HOWTO (R_VISIUM_8_PCREL, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_VISIUM_8_PCREL", /* name */
FALSE, /* partial_inplace */
0x00, /* src_mask */
0xff, /* dst_mask */
TRUE), /* pcrel_offset */
/* A 16 bit PC relative relocation. */
HOWTO (R_VISIUM_16_PCREL, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_VISIUM_16_PCREL", /* name */
FALSE, /* partial inplace */
0x0000, /* src_mask */
0xffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* A 32-bit PC relative relocation. */
HOWTO (R_VISIUM_32_PCREL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_VISIUM_32_PCREL", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0xffffffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* A 16-bit PC word relative offset, relative to start of instruction
and always in the second half of the instruction. */
HOWTO (R_VISIUM_PC16, /* type */
2, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
visium_elf_howto_parity_reloc, /* special_function */
"R_VISIUM_PC16", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* The high 16 bits of symbol value. */
HOWTO (R_VISIUM_HI16, /* type */
16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
visium_elf_howto_parity_reloc, /* special_function */
"R_VISIUM_HI16", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* The low 16 bits of symbol value. */
HOWTO (R_VISIUM_LO16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
visium_elf_howto_parity_reloc, /* special_function */
"R_VISIUM_LO16", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0x0000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 16 bit immediate value. */
HOWTO (R_VISIUM_IM16, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_unsigned, /* complain_on_overflow */
visium_elf_howto_parity_reloc, /* special_function */
"R_VISIUM_IM16", /* name */
FALSE, /* partial_inplace */
0x0000000, /* src_mask */
0x000ffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* The high 16 bits of symbol value, pc relative. */
HOWTO (R_VISIUM_HI16_PCREL, /* type */
16, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
visium_elf_howto_parity_reloc, /* special_function */
"R_VISIUM_HI16_PCREL", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* The low 16 bits of symbol value, pc relative. */
HOWTO (R_VISIUM_LO16_PCREL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
visium_elf_howto_parity_reloc, /* special_function */
"R_VISIUM_LO16_PCREL", /* name */
FALSE, /* partial_inplace */
0x00000000, /* src_mask */
0x0000ffff, /* dst_mask */
TRUE), /* pcrel_offset */
/* A 16 bit immediate value, pc relative. */
HOWTO (R_VISIUM_IM16_PCREL, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_unsigned, /* complain_on_overflow */
visium_elf_howto_parity_reloc, /* special_function */
"R_VISIUM_IM16_PCREL", /* name */
FALSE, /* partial_inplace */
0x0000000, /* src_mask */
0x000ffff, /* dst_mask */
TRUE), /* pcrel_offset */
};
/* GNU extension to record C++ vtable hierarchy. */
static reloc_howto_type visium_elf_vtinherit_howto =
HOWTO (R_VISIUM_GNU_VTINHERIT, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
NULL, /* special_function */
"R_VISIUM_GNU_VTINHERIT", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE); /* pcrel_offset */
/* GNU extension to record C++ vtable member usage. */
static reloc_howto_type visium_elf_vtentry_howto =
HOWTO (R_VISIUM_GNU_VTENTRY, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
NULL, /* special_function */
"R_VISIUM_GNU_VTENTRY", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE); /* pcrel_offset */
/* Map BFD reloc types to VISIUM ELF reloc types. */
struct visium_reloc_map
{
bfd_reloc_code_real_type bfd_reloc_val;
unsigned int visium_reloc_val;
};
static const struct visium_reloc_map visium_reloc_map[] = {
{BFD_RELOC_NONE, R_VISIUM_NONE},
{BFD_RELOC_8, R_VISIUM_8},
{BFD_RELOC_16, R_VISIUM_16},
{BFD_RELOC_32, R_VISIUM_32},
{BFD_RELOC_8_PCREL, R_VISIUM_8_PCREL},
{BFD_RELOC_16_PCREL, R_VISIUM_16_PCREL},
{BFD_RELOC_32_PCREL, R_VISIUM_32_PCREL},
{BFD_RELOC_VISIUM_REL16, R_VISIUM_PC16},
{BFD_RELOC_VISIUM_HI16, R_VISIUM_HI16},
{BFD_RELOC_VISIUM_LO16, R_VISIUM_LO16},
{BFD_RELOC_VISIUM_IM16, R_VISIUM_IM16},
{BFD_RELOC_VISIUM_HI16_PCREL, R_VISIUM_HI16_PCREL},
{BFD_RELOC_VISIUM_LO16_PCREL, R_VISIUM_LO16_PCREL},
{BFD_RELOC_VISIUM_IM16_PCREL, R_VISIUM_IM16_PCREL},
{BFD_RELOC_VTABLE_INHERIT, R_VISIUM_GNU_VTINHERIT},
{BFD_RELOC_VTABLE_ENTRY, R_VISIUM_GNU_VTENTRY},
};
/* Return the parity bit for INSN shifted to its final position. */
static bfd_vma
visium_parity_bit (bfd_vma insn)
{
bfd_vma p = 0;
int i;
for (i = 0; i < 31; i++)
{
p ^= (insn & 1);
insn >>= 1;
}
return p << 31;
}
/* This "special function" will only be used when the input and
output files have different formats ie. when generating S-records
directly using "--oformat srec". Otherwise we use
_bfd_final_link_relocate which uses a howto structure, but does
not use the special_function field.
It sets instruction parity to even. This cannot be done by a howto. */
static bfd_reloc_status_type
visium_elf_howto_parity_reloc (bfd * input_bfd, arelent *reloc_entry,
asymbol *symbol, PTR data,
asection *input_section, bfd *output_bfd,
char **error_message ATTRIBUTE_UNUSED)
{
bfd_reloc_status_type ret;
bfd_vma relocation;
bfd_byte *inplace_address;
bfd_vma insn;
const bfd_vma signmask = 0xffff8000;
/* This part is from bfd_elf_generic_reloc.
If we're relocating, and this an external symbol, we don't want
to change anything. */
if (output_bfd != (bfd *) NULL && (symbol->flags & BSF_SECTION_SYM) == 0)
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
/* Now do the reloc in the usual way. */
/* Sanity check the address (offset in section). */
if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section))
return bfd_reloc_outofrange;
ret = bfd_reloc_ok;
if (bfd_is_und_section (symbol->section) && output_bfd == (bfd *) NULL)
ret = bfd_reloc_undefined;
if (bfd_is_com_section (symbol->section) || output_bfd != (bfd *) NULL)
relocation = 0;
else
relocation = symbol->value;
/* Only do this for a final link. */
if (output_bfd == (bfd *) NULL)
{
relocation += symbol->section->output_section->vma;
relocation += symbol->section->output_offset;
}
relocation += reloc_entry->addend;
inplace_address = (bfd_byte *) data + reloc_entry->address;
insn = bfd_get_32 (input_bfd, inplace_address);
if (reloc_entry->howto->pc_relative)
{
relocation -= input_section->output_section->vma
+ input_section->output_offset;
relocation -= reloc_entry->address;
}
switch (reloc_entry->howto->type)
{
case R_VISIUM_PC16:
relocation >>= 2;
if (ret == bfd_reloc_ok && (relocation & signmask) != 0
&& (relocation & signmask) != signmask)
ret = bfd_reloc_overflow;
relocation &= 0xffff;
break;
case R_VISIUM_HI16:
case R_VISIUM_HI16_PCREL:
relocation = (relocation >> 16) & 0xffff;
break;
case R_VISIUM_LO16:
case R_VISIUM_LO16_PCREL:
relocation &= 0xffff;
break;
case R_VISIUM_IM16:
case R_VISIUM_IM16_PCREL:
if (ret == bfd_reloc_ok && (relocation & 0xffff0000) != 0)
ret = bfd_reloc_overflow;
relocation &= 0xffff;
break;
}
insn = (insn & 0x7fff0000) | relocation;
insn |= visium_parity_bit (insn);
bfd_put_32 (input_bfd, insn, inplace_address);
if (output_bfd != (bfd *) NULL)
reloc_entry->address += input_section->output_offset;
return ret;
}
static reloc_howto_type *
visium_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
bfd_reloc_code_real_type code)
{
/* Note that the visium_elf_howto_table is indexed by the R_
constants. Thus, the order that the howto records appear in the
table *must* match the order of the relocation types defined in
include/elf/visium.h. */
switch (code)
{
case BFD_RELOC_NONE:
return &visium_elf_howto_table[(int) R_VISIUM_NONE];
case BFD_RELOC_8:
return &visium_elf_howto_table[(int) R_VISIUM_8];
case BFD_RELOC_16:
return &visium_elf_howto_table[(int) R_VISIUM_16];
case BFD_RELOC_32:
return &visium_elf_howto_table[(int) R_VISIUM_32];
case BFD_RELOC_8_PCREL:
return &visium_elf_howto_table[(int) R_VISIUM_8_PCREL];
case BFD_RELOC_16_PCREL:
return &visium_elf_howto_table[(int) R_VISIUM_16_PCREL];
case BFD_RELOC_32_PCREL:
return &visium_elf_howto_table[(int) R_VISIUM_32_PCREL];
case BFD_RELOC_VISIUM_REL16:
return &visium_elf_howto_table[(int) R_VISIUM_PC16];
case BFD_RELOC_VISIUM_HI16:
return &visium_elf_howto_table[(int) R_VISIUM_HI16];
case BFD_RELOC_VISIUM_LO16:
return &visium_elf_howto_table[(int) R_VISIUM_LO16];
case BFD_RELOC_VISIUM_IM16:
return &visium_elf_howto_table[(int) R_VISIUM_IM16];
case BFD_RELOC_VISIUM_HI16_PCREL:
return &visium_elf_howto_table[(int) R_VISIUM_HI16_PCREL];
case BFD_RELOC_VISIUM_LO16_PCREL:
return &visium_elf_howto_table[(int) R_VISIUM_LO16_PCREL];
case BFD_RELOC_VISIUM_IM16_PCREL:
return &visium_elf_howto_table[(int) R_VISIUM_IM16_PCREL];
case BFD_RELOC_VTABLE_INHERIT:
return &visium_elf_vtinherit_howto;
case BFD_RELOC_VTABLE_ENTRY:
return &visium_elf_vtentry_howto;
default:
return NULL;
}
}
static reloc_howto_type *
visium_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
{
unsigned int i;
for (i = 0;
i < (sizeof (visium_elf_howto_table)
/ sizeof (visium_elf_howto_table[0])); i++)
if (visium_elf_howto_table[i].name != NULL
&& strcasecmp (visium_elf_howto_table[i].name, r_name) == 0)
return &visium_elf_howto_table[i];
if (strcasecmp (visium_elf_vtinherit_howto.name, r_name) == 0)
return &visium_elf_vtinherit_howto;
if (strcasecmp (visium_elf_vtentry_howto.name, r_name) == 0)
return &visium_elf_vtentry_howto;
return NULL;
}
/* Set the howto pointer for a VISIUM ELF reloc. */
static void
visium_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED, arelent *cache_ptr,
Elf_Internal_Rela *dst)
{
unsigned int r_type = ELF32_R_TYPE (dst->r_info);
switch (r_type)
{
case R_VISIUM_GNU_VTINHERIT:
cache_ptr->howto = &visium_elf_vtinherit_howto;
break;
case R_VISIUM_GNU_VTENTRY:
cache_ptr->howto = &visium_elf_vtentry_howto;
break;
default:
if (r_type >= (unsigned int) R_VISIUM_max)
{
_bfd_error_handler (_("%A: invalid Visium reloc number: %d"), abfd, r_type);
r_type = 0;
}
cache_ptr->howto = &visium_elf_howto_table[r_type];
break;
}
}
/* Look through the relocs for a section during the first phase.
Since we don't do .gots or .plts, we just need to consider the
virtual table relocs for gc. */
static bfd_boolean
visium_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;
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);
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;
}
switch (ELF32_R_TYPE (rel->r_info))
{
/* This relocation describes the C++ object vtable hierarchy.
Reconstruct it for later use during GC. */
case R_VISIUM_GNU_VTINHERIT:
if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
return FALSE;
break;
/* This relocation describes which C++ vtable entries are actually
used. Record for later use during GC. */
case R_VISIUM_GNU_VTENTRY:
if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
return FALSE;
break;
}
}
return TRUE;
}
/* Relocate a VISIUM ELF section. */
static bfd_boolean
visium_elf_relocate_section (bfd *output_bfd,
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;
bfd_vma insn;
r_type = ELF32_R_TYPE (rel->r_info);
if (r_type == R_VISIUM_GNU_VTINHERIT || r_type == R_VISIUM_GNU_VTENTRY)
continue;
r_symndx = ELF32_R_SYM (rel->r_info);
howto = visium_elf_howto_table + ELF32_R_TYPE (rel->r_info);
h = NULL;
sym = NULL;
sec = NULL;
if (r_symndx < symtab_hdr->sh_info)
{
/* This is a local symbol. */
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, ignored;
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
r_symndx, symtab_hdr, sym_hashes,
h, sec, relocation,
unresolved_reloc, warned, ignored);
name = h->root.root.string;
}
if (sec != NULL && 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, input_section,
contents + rel->r_offset);
rel->r_info = 0;
rel->r_addend = 0;
continue;
}
if (info->relocatable)
continue;
switch (r_type)
{
case R_VISIUM_PC16:
case R_VISIUM_HI16:
case R_VISIUM_LO16:
case R_VISIUM_IM16:
case R_VISIUM_HI16_PCREL:
case R_VISIUM_LO16_PCREL:
case R_VISIUM_IM16_PCREL:
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
relocation, rel->r_addend);
/* For instruction relocations, the parity needs correcting. */
if (r == bfd_reloc_ok)
{
insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
insn = (insn & 0x7fffffff) | visium_parity_bit (insn);
bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
}
break;
default:
r = _bfd_final_link_relocate (howto, input_bfd, input_section,
contents, rel->r_offset,
relocation, rel->r_addend);
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_notsupported:
msg = _("internal error: unsupported relocation 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;
}
/* This function is called during section gc to discover the section a
to which a particular relocation refers. Return the section that
should be marked against GC for a given relocation. */
static asection *
visium_elf_gc_mark_hook (asection *sec, struct bfd_link_info *info,
Elf_Internal_Rela *rel, struct elf_link_hash_entry *h,
Elf_Internal_Sym *sym)
{
if (h != NULL)
switch (ELF32_R_TYPE (rel->r_info))
{
case R_VISIUM_GNU_VTINHERIT:
case R_VISIUM_GNU_VTENTRY:
return NULL;
}
return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
}
static void
visium_elf_post_process_headers (bfd *abfd,
struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
Elf_Internal_Ehdr *i_ehdrp = elf_elfheader (abfd);
i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_STANDALONE;
i_ehdrp->e_ident[EI_ABIVERSION] = 1;
}
/* Function to set the ELF flag bits. */
static bfd_boolean
visium_elf_set_private_flags (bfd *abfd, flagword flags)
{
elf_elfheader (abfd)->e_flags = flags;
elf_flags_init (abfd) = TRUE;
return TRUE;
}
/* Copy backend specific data from one object module to another. */
static bfd_boolean
visium_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;
/* Copy object attributes. */
_bfd_elf_copy_obj_attributes (ibfd, obfd);
return TRUE;
}
/* Merge backend specific data from an object
file to the output object file when linking. */
static bfd_boolean
visium_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
{
flagword old_flags;
flagword new_flags;
flagword mismatch;
const char *opt_arch = NULL;
const char *new_opt_with = NULL;
const char *old_opt_with = NULL;
const char *with = "with";
const char *without = "without";
const char *mcm = "mcm";
const char *mcm24 = "mcm24";
const char *gr6 = "gr6";
new_flags = elf_elfheader (ibfd)->e_flags;
old_flags = elf_elfheader (obfd)->e_flags;
if (!elf_flags_init (obfd))
{
/* First call, no flags set. */
elf_flags_init (obfd) = TRUE;
elf_elfheader (obfd)->e_flags = new_flags;
}
else
{
mismatch = (new_flags ^ old_flags)
& (EF_VISIUM_ARCH_MCM | EF_VISIUM_ARCH_MCM24 | EF_VISIUM_ARCH_GR6);
if (mismatch & EF_VISIUM_ARCH_GR6)
{
opt_arch = gr6;
new_opt_with = new_flags & EF_VISIUM_ARCH_GR6 ? with : without;
old_opt_with = old_flags & EF_VISIUM_ARCH_GR6 ? with : without;
}
else if (mismatch & EF_VISIUM_ARCH_MCM)
{
opt_arch = mcm;
new_opt_with = new_flags & EF_VISIUM_ARCH_MCM ? with : without;
old_opt_with = old_flags & EF_VISIUM_ARCH_MCM ? with : without;
}
else if (mismatch & EF_VISIUM_ARCH_MCM24)
{
opt_arch = mcm24;
new_opt_with = new_flags & EF_VISIUM_ARCH_MCM24 ? with : without;
old_opt_with = old_flags & EF_VISIUM_ARCH_MCM24 ? with : without;
}
if (mismatch)
_bfd_error_handler
(_
("%s: compiled %s -mtune=%s and linked with modules"
" compiled %s -mtune=%s"),
bfd_get_filename (ibfd), new_opt_with, opt_arch, old_opt_with,
opt_arch);
}
return TRUE;
}
static bfd_boolean
visium_elf_print_private_bfd_data (bfd *abfd, void *ptr)
{
FILE *file = (FILE *) ptr;
flagword flags;
BFD_ASSERT (abfd != NULL && ptr != NULL);
/* Print normal ELF private data. */
_bfd_elf_print_private_bfd_data (abfd, ptr);
flags = elf_elfheader (abfd)->e_flags;
fprintf (file, _("private flags = 0x%lx:"), (long) flags);
if (flags & EF_VISIUM_ARCH_GR6)
fprintf (file, " -mtune=gr6");
else if (flags & EF_VISIUM_ARCH_MCM)
fprintf (file, " -mtune=mcm");
else if (flags & EF_VISIUM_ARCH_MCM24)
fprintf (file, " -mtune=mcm24");
fputc ('\n', file);
return TRUE;
}
#define ELF_ARCH bfd_arch_visium
#define ELF_MACHINE_CODE EM_VISIUM
#define ELF_MAXPAGESIZE 1
#define TARGET_BIG_SYM visium_elf32_vec
#define TARGET_BIG_NAME "elf32-visium"
#define elf_info_to_howto_rel NULL
#define elf_info_to_howto visium_info_to_howto_rela
#define elf_backend_relocate_section visium_elf_relocate_section
#define elf_backend_gc_mark_hook visium_elf_gc_mark_hook
#define elf_backend_check_relocs visium_elf_check_relocs
#define elf_backend_rela_normal 1
#define elf_backend_can_gc_sections 1
#define bfd_elf32_bfd_reloc_type_lookup visium_reloc_type_lookup
#define bfd_elf32_bfd_reloc_name_lookup visium_reloc_name_lookup
#define bfd_elf32_bfd_set_private_flags visium_elf_set_private_flags
#define bfd_elf32_bfd_copy_private_bfd_data visium_elf_copy_private_bfd_data
#define bfd_elf32_bfd_merge_private_bfd_data visium_elf_merge_private_bfd_data
#define bfd_elf32_bfd_print_private_bfd_data visium_elf_print_private_bfd_data
#define elf_backend_post_process_headers visium_elf_post_process_headers
#include "elf32-target.h"
Reference in New Issue View Git Blame Copy Permalink