450 lines
12 KiB
C
450 lines
12 KiB
C
|
/* Infineon XC16X-specific support for 16-bit ELF.
|
||
|
|
Copyright 2006 Free Software Foundation, Inc.
|
||
|
|
Contributed by KPIT Cummins Infosystems
|
||
|
|
|
||
|
|
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 2 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, 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
|
||
|
|
|
||
|
|
#include "bfd.h"
|
||
|
|
#include "sysdep.h"
|
||
|
|
#include "libbfd.h"
|
||
|
|
#include "elf-bfd.h"
|
||
|
|
#include "elf/xc16x.h"
|
||
|
|
#include "elf/dwarf2.h"
|
||
|
|
#include "libiberty.h"
|
||
|
|
|
||
|
|
static reloc_howto_type xc16x_elf_howto_table [] =
|
||
|
|
{
|
||
|
|
/* This reloc does nothing. */
|
||
|
|
HOWTO (R_XC16X_NONE, /* 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_XC16X_NONE", /* name */
|
||
|
|
FALSE, /* partial_inplace */
|
||
|
|
0, /* src_mask */
|
||
|
|
0, /* dst_mask */
|
||
|
|
FALSE), /* pcrel_offset */
|
||
|
|
|
||
|
|
/* An 8 bit absolute relocation. */
|
||
|
|
HOWTO (R_XC16X_ABS_8, /* type */
|
||
|
|
0, /* rightshift */
|
||
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
|
|
8, /* bitsize */
|
||
|
|
FALSE, /* pc_relative */
|
||
|
|
8, /* bitpos */
|
||
|
|
complain_overflow_bitfield, /* complain_on_overflow */
|
||
|
|
bfd_elf_generic_reloc, /* special_function */
|
||
|
|
"R_XC16X_ABS_8", /* name */
|
||
|
|
TRUE, /* partial_inplace */
|
||
|
|
0x0000, /* src_mask */
|
||
|
|
0x00ff, /* dst_mask */
|
||
|
|
FALSE), /* pcrel_offset */
|
||
|
|
|
||
|
|
/* A 16 bit absolute relocation. */
|
||
|
|
HOWTO (R_XC16X_ABS_16, /* type */
|
||
|
|
0, /* rightshift */
|
||
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
|
|
16, /* bitsize */
|
||
|
|
FALSE, /* pc_relative */
|
||
|
|
0, /* bitpos */
|
||
|
|
complain_overflow_dont, /* complain_on_overflow */
|
||
|
|
bfd_elf_generic_reloc, /* special_function */
|
||
|
|
"R_XC16X_ABS_16", /* name */
|
||
|
|
TRUE, /* partial_inplace */
|
||
|
|
0x00000000, /* src_mask */
|
||
|
|
0x0000ffff, /* dst_mask */
|
||
|
|
FALSE), /* pcrel_offset */
|
||
|
|
|
||
|
|
HOWTO (R_XC16X_ABS_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_XC16X_ABS_32", /* name */
|
||
|
|
TRUE, /* partial_inplace */
|
||
|
|
0x00000000, /* src_mask */
|
||
|
|
0xffffffff, /* dst_mask */
|
||
|
|
FALSE), /* pcrel_offset */
|
||
|
|
|
||
|
|
|
||
|
|
/* A PC relative 8 bit relocation. */
|
||
|
|
HOWTO (R_XC16X_8_PCREL, /* type */
|
||
|
|
0, /* rightshift */
|
||
|
|
0, /* size (0 = byte, 1 = short, 2 = long) */
|
||
|
|
8, /* bitsize */
|
||
|
|
TRUE, /* pc_relative */
|
||
|
|
8, /* bitpos */
|
||
|
|
complain_overflow_signed, /* complain_on_overflow */
|
||
|
|
bfd_elf_generic_reloc, /* special_function */
|
||
|
|
"R_XC16X_8_PCREL", /* name */
|
||
|
|
FALSE, /* partial_inplace */
|
||
|
|
0x0000, /* src_mask */
|
||
|
|
0x00ff, /* dst_mask */
|
||
|
|
TRUE), /* pcrel_offset */
|
||
|
|
|
||
|
|
/* Relocation regarding page number. */
|
||
|
|
HOWTO (R_XC16X_PAG, /* type */
|
||
|
|
0, /* rightshift */
|
||
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
|
|
16, /* bitsize */
|
||
|
|
FALSE, /* pc_relative */
|
||
|
|
0, /* bitpos */
|
||
|
|
complain_overflow_signed, /* complain_on_overflow */
|
||
|
|
bfd_elf_generic_reloc, /* special_function */
|
||
|
|
"R_XC16X_PAG", /* name */
|
||
|
|
TRUE, /* partial_inplace */
|
||
|
|
0x00000000, /* src_mask */
|
||
|
|
0x0000ffff, /* dst_mask */
|
||
|
|
FALSE), /* pcrel_offset */
|
||
|
|
|
||
|
|
|
||
|
|
/* Relocation regarding page number. */
|
||
|
|
HOWTO (R_XC16X_POF, /* type */
|
||
|
|
0, /* rightshift */
|
||
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
|
|
16, /* bitsize */
|
||
|
|
FALSE, /* pc_relative */
|
||
|
|
0, /* bitpos */
|
||
|
|
complain_overflow_signed, /* complain_on_overflow */
|
||
|
|
bfd_elf_generic_reloc, /* special_function */
|
||
|
|
"R_XC16X_POF", /* name */
|
||
|
|
TRUE, /* partial_inplace */
|
||
|
|
0x00000000, /* src_mask */
|
||
|
|
0x0000ffff, /* dst_mask */
|
||
|
|
FALSE), /* pcrel_offset */
|
||
|
|
|
||
|
|
|
||
|
|
/* Relocation regarding segment number. */
|
||
|
|
HOWTO (R_XC16X_SEG, /* type */
|
||
|
|
0, /* rightshift */
|
||
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
|
|
16, /* bitsize */
|
||
|
|
FALSE, /* pc_relative */
|
||
|
|
0, /* bitpos */
|
||
|
|
complain_overflow_signed, /* complain_on_overflow */
|
||
|
|
bfd_elf_generic_reloc, /* special_function */
|
||
|
|
"R_XC16X_SEG", /* name */
|
||
|
|
TRUE, /* partial_inplace */
|
||
|
|
0x00000000, /* src_mask */
|
||
|
|
0x0000ffff, /* dst_mask */
|
||
|
|
FALSE), /* pcrel_offset */
|
||
|
|
|
||
|
|
/* Relocation regarding segment offset. */
|
||
|
|
HOWTO (R_XC16X_SOF, /* type */
|
||
|
|
0, /* rightshift */
|
||
|
|
1, /* size (0 = byte, 1 = short, 2 = long) */
|
||
|
|
16, /* bitsize */
|
||
|
|
FALSE, /* pc_relative */
|
||
|
|
0, /* bitpos */
|
||
|
|
complain_overflow_signed, /* complain_on_overflow */
|
||
|
|
bfd_elf_generic_reloc, /* special_function */
|
||
|
|
"R_XC16X_SOF", /* name */
|
||
|
|
TRUE, /* partial_inplace */
|
||
|
|
0x00000000, /* src_mask */
|
||
|
|
0x0000ffff, /* dst_mask */
|
||
|
|
FALSE) /* pcrel_offset */
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* Map BFD reloc types to XC16X ELF reloc types. */
|
||
|
|
|
||
|
|
struct xc16x_reloc_map
|
||
|
|
{
|
||
|
|
bfd_reloc_code_real_type bfd_reloc_val;
|
||
|
|
unsigned int xc16x_reloc_val;
|
||
|
|
};
|
||
|
|
|
||
|
|
static const struct xc16x_reloc_map xc16x_reloc_map [] =
|
||
|
|
{
|
||
|
|
{ BFD_RELOC_NONE, R_XC16X_NONE },
|
||
|
|
{ BFD_RELOC_8, R_XC16X_ABS_8 },
|
||
|
|
{ BFD_RELOC_16, R_XC16X_ABS_16 },
|
||
|
|
{ BFD_RELOC_32, R_XC16X_ABS_32 },
|
||
|
|
{ BFD_RELOC_8_PCREL, R_XC16X_8_PCREL },
|
||
|
|
{ BFD_RELOC_XC16X_PAG, R_XC16X_PAG},
|
||
|
|
{ BFD_RELOC_XC16X_POF, R_XC16X_POF},
|
||
|
|
{ BFD_RELOC_XC16X_SEG, R_XC16X_SEG},
|
||
|
|
{ BFD_RELOC_XC16X_SOF, R_XC16X_SOF},
|
||
|
|
};
|
||
|
|
|
||
|
|
|
||
|
|
/* This function is used to search for correct relocation type from
|
||
|
|
howto structure. */
|
||
|
|
|
||
|
|
static reloc_howto_type *
|
||
|
|
xc16x_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
|
||
|
|
bfd_reloc_code_real_type code)
|
||
|
|
{
|
||
|
|
unsigned int i;
|
||
|
|
|
||
|
|
for (i = ARRAY_SIZE (xc16x_reloc_map); --i;)
|
||
|
|
if (xc16x_reloc_map [i].bfd_reloc_val == code)
|
||
|
|
return & xc16x_elf_howto_table [xc16x_reloc_map[i].xc16x_reloc_val];
|
||
|
|
|
||
|
|
return NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
/* For a particular operand this function is
|
||
|
|
called to finalise the type of relocation. */
|
||
|
|
|
||
|
|
static void
|
||
|
|
elf32_xc16x_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, arelent *bfd_reloc,
|
||
|
|
Elf_Internal_Rela *elf_reloc)
|
||
|
|
{
|
||
|
|
unsigned int r;
|
||
|
|
unsigned int i;
|
||
|
|
|
||
|
|
r = ELF32_R_TYPE (elf_reloc->r_info);
|
||
|
|
for (i = 0; i < ARRAY_SIZE (xc16x_elf_howto_table); i++)
|
||
|
|
if (xc16x_elf_howto_table[i].type == r)
|
||
|
|
{
|
||
|
|
bfd_reloc->howto = &xc16x_elf_howto_table[i];
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
abort ();
|
||
|
|
}
|
||
|
|
|
||
|
|
static bfd_reloc_status_type
|
||
|
|
elf32_xc16x_final_link_relocate (unsigned long r_type,
|
||
|
|
bfd *input_bfd,
|
||
|
|
bfd *output_bfd ATTRIBUTE_UNUSED,
|
||
|
|
asection *input_section ATTRIBUTE_UNUSED,
|
||
|
|
bfd_byte *contents,
|
||
|
|
bfd_vma offset,
|
||
|
|
bfd_vma value,
|
||
|
|
bfd_vma addend,
|
||
|
|
struct bfd_link_info *info ATTRIBUTE_UNUSED,
|
||
|
|
asection *sym_sec ATTRIBUTE_UNUSED,
|
||
|
|
int is_local ATTRIBUTE_UNUSED)
|
||
|
|
{
|
||
|
|
bfd_byte *hit_data = contents + offset;
|
||
|
|
bfd_vma val1;
|
||
|
|
|
||
|
|
switch (r_type)
|
||
|
|
{
|
||
|
|
case R_XC16X_NONE:
|
||
|
|
return bfd_reloc_ok;
|
||
|
|
|
||
|
|
case R_XC16X_ABS_16:
|
||
|
|
value += addend;
|
||
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
||
|
|
return bfd_reloc_ok;
|
||
|
|
|
||
|
|
case R_XC16X_8_PCREL:
|
||
|
|
bfd_put_8 (input_bfd, value, hit_data);
|
||
|
|
return bfd_reloc_ok;
|
||
|
|
|
||
|
|
/* Following case is to find page number from actual
|
||
|
|
address for this divide value by 16k i.e. page size. */
|
||
|
|
|
||
|
|
case R_XC16X_PAG:
|
||
|
|
value += addend;
|
||
|
|
value /= 0x4000;
|
||
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
||
|
|
return bfd_reloc_ok;
|
||
|
|
|
||
|
|
/* Following case is to find page offset from actual address
|
||
|
|
for this take modulo of value by 16k i.e. page size. */
|
||
|
|
|
||
|
|
case R_XC16X_POF:
|
||
|
|
value += addend;
|
||
|
|
value %= 0x4000;
|
||
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
||
|
|
return bfd_reloc_ok;
|
||
|
|
|
||
|
|
/* Following case is to find segment number from actual
|
||
|
|
address for this divide value by 64k i.e. segment size. */
|
||
|
|
|
||
|
|
case R_XC16X_SEG:
|
||
|
|
value += addend;
|
||
|
|
value /= 0x10000;
|
||
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
||
|
|
return bfd_reloc_ok;
|
||
|
|
|
||
|
|
/* Following case is to find segment offset from actual address
|
||
|
|
for this take modulo of value by 64k i.e. segment size. */
|
||
|
|
|
||
|
|
case R_XC16X_SOF:
|
||
|
|
value += addend;
|
||
|
|
value %= 0x10000;
|
||
|
|
bfd_put_16 (input_bfd, value, hit_data);
|
||
|
|
return bfd_reloc_ok;
|
||
|
|
|
||
|
|
case R_XC16X_ABS_32:
|
||
|
|
if (!strstr (input_section->name,".debug"))
|
||
|
|
{
|
||
|
|
value += addend;
|
||
|
|
val1 = value;
|
||
|
|
value %= 0x4000;
|
||
|
|
val1 /= 0x4000;
|
||
|
|
val1 = val1 << 16;
|
||
|
|
value += val1;
|
||
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
value += addend;
|
||
|
|
bfd_put_32 (input_bfd, value, hit_data);
|
||
|
|
}
|
||
|
|
return bfd_reloc_ok;
|
||
|
|
|
||
|
|
default:
|
||
|
|
return bfd_reloc_notsupported;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static bfd_boolean
|
||
|
|
elf32_xc16x_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, *relend;
|
||
|
|
|
||
|
|
if (info->relocatable)
|
||
|
|
return TRUE;
|
||
|
|
|
||
|
|
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
|
||
|
|
sym_hashes = elf_sym_hashes (input_bfd);
|
||
|
|
|
||
|
|
rel = relocs;
|
||
|
|
relend = relocs + input_section->reloc_count;
|
||
|
|
for (; rel < relend; rel++)
|
||
|
|
{
|
||
|
|
unsigned int r_type;
|
||
|
|
unsigned long r_symndx;
|
||
|
|
Elf_Internal_Sym *sym;
|
||
|
|
asection *sec;
|
||
|
|
struct elf_link_hash_entry *h;
|
||
|
|
bfd_vma relocation;
|
||
|
|
bfd_reloc_status_type r;
|
||
|
|
|
||
|
|
/* This is a final link. */
|
||
|
|
r_symndx = ELF32_R_SYM (rel->r_info);
|
||
|
|
r_type = 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);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
bfd_boolean unresolved_reloc, warned;
|
||
|
|
|
||
|
|
RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
|
||
|
|
r_symndx, symtab_hdr, sym_hashes,
|
||
|
|
h, sec, relocation,
|
||
|
|
unresolved_reloc, warned);
|
||
|
|
}
|
||
|
|
|
||
|
|
r = elf32_xc16x_final_link_relocate (r_type, input_bfd, output_bfd,
|
||
|
|
input_section,
|
||
|
|
contents, rel->r_offset,
|
||
|
|
relocation, rel->r_addend,
|
||
|
|
info, sec, h == NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static void
|
||
|
|
elf32_xc16x_final_write_processing (bfd *abfd,
|
||
|
|
bfd_boolean linker ATTRIBUTE_UNUSED)
|
||
|
|
{
|
||
|
|
unsigned long val;
|
||
|
|
|
||
|
|
switch (bfd_get_mach (abfd))
|
||
|
|
{
|
||
|
|
default:
|
||
|
|
case bfd_mach_xc16x:
|
||
|
|
val = 0x1000;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case bfd_mach_xc16xl:
|
||
|
|
val = 0x1001;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case bfd_mach_xc16xs:
|
||
|
|
val = 0x1002;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
elf_elfheader (abfd)->e_flags |= val;
|
||
|
|
}
|
||
|
|
|
||
|
|
static unsigned long
|
||
|
|
elf32_xc16x_mach (flagword flags)
|
||
|
|
{
|
||
|
|
switch (flags)
|
||
|
|
{
|
||
|
|
case 0x1000:
|
||
|
|
default:
|
||
|
|
return bfd_mach_xc16x;
|
||
|
|
|
||
|
|
case 0x1001:
|
||
|
|
return bfd_mach_xc16xl;
|
||
|
|
|
||
|
|
case 0x1002:
|
||
|
|
return bfd_mach_xc16xs;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
static bfd_boolean
|
||
|
|
elf32_xc16x_object_p (bfd *abfd)
|
||
|
|
{
|
||
|
|
bfd_default_set_arch_mach (abfd, bfd_arch_xc16x,
|
||
|
|
elf32_xc16x_mach (elf_elfheader (abfd)->e_flags));
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
#define ELF_ARCH bfd_arch_xc16x
|
||
|
|
#define ELF_MACHINE_CODE EM_XC16X
|
||
|
|
#define ELF_MAXPAGESIZE 0x100
|
||
|
|
|
||
|
|
#define TARGET_LITTLE_SYM bfd_elf32_xc16x_vec
|
||
|
|
#define TARGET_LITTLE_NAME "elf32-xc16x"
|
||
|
|
#define elf_backend_final_write_processing elf32_xc16x_final_write_processing
|
||
|
|
#define elf_backend_object_p elf32_xc16x_object_p
|
||
|
|
#define elf_backend_can_gc_sections 1
|
||
|
|
#define bfd_elf32_bfd_reloc_type_lookup xc16x_reloc_type_lookup
|
||
|
|
#define elf_info_to_howto elf32_xc16x_info_to_howto
|
||
|
|
#define elf_info_to_howto_rel elf32_xc16x_info_to_howto
|
||
|
|
#define elf_backend_relocate_section elf32_xc16x_relocate_section
|
||
|
|
#define elf_backend_rela_normal 1
|
||
|
|
|
||
|
|
#include "elf32-target.h"
|