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gnu / binutils-gdb / 291862d73dc6b445dae7638c7490d74473dea27c / . / bfd / elf32-m68hc12.c
blob: 219fd6b0da331a371d0f452fa0c5f13f746defee [file] [log] [blame]
/* Motorola 68HC12-specific support for 32-bit ELF
Copyright 1999, 2000, 2002 Free Software Foundation, Inc.
Contributed by Stephane Carrez (stcarrez@nerim.fr)
(Heavily copied from the D10V port by Martin Hunt (hunt@cygnus.com))
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, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
#include "elf-bfd.h"
#include "elf/m68hc11.h"
#include "opcode/m68hc11.h"
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
PARAMS ((bfd *, bfd_reloc_code_real_type));
static void m68hc11_info_to_howto_rel
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
static bfd_reloc_status_type m68hc11_elf_ignore_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type m68hc12_elf_special_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static int m68hc12_addr_is_banked PARAMS ((bfd_vma));
static bfd_vma m68hc12_phys_addr PARAMS ((bfd_vma));
static bfd_vma m68hc12_phys_page PARAMS ((bfd_vma));
/* GC mark and sweep. */
static asection *elf32_m68hc11_gc_mark_hook
PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
struct elf_link_hash_entry *, Elf_Internal_Sym *));
static bfd_boolean elf32_m68hc11_gc_sweep_hook
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
static bfd_boolean m68hc12_elf_set_mach_from_flags PARAMS ((bfd *));
bfd_boolean _bfd_m68hc12_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
bfd_boolean _bfd_m68hc12_elf_set_private_flags PARAMS ((bfd *, flagword));
bfd_boolean _bfd_m68hc12_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
/* Use REL instead of RELA to save space */
#define USE_REL 1
/* The Motorola 68HC11 microcontroler only addresses 64Kb.
We must handle 8 and 16-bit relocations. The 32-bit relocation
is defined but not used except by gas when -gstabs is used (which
is wrong).
The 68HC12 microcontroler has a memory bank switching system
with a 16Kb window in the 64Kb address space. The extended memory
is mapped in the 16Kb window (at 0x8000). The page register controls
which 16Kb bank is mapped. The call/rtc instructions take care of
bank switching in function calls/returns.
For GNU Binutils to work, we consider there is a physical memory
at 0..0x0ffff and a kind of virtual memory above that. Symbols
in virtual memory have their addresses treated in a special way
when disassembling and when linking.
For the linker to work properly, we must always relocate the virtual
memory as if it is mapped at 0x8000. When a 16-bit relocation is
made in the virtual memory, we check that it does not cross the
memory bank where it is used. This would involve a page change
which would be wrong. The 24-bit relocation is for that and it
treats the address as a physical address + page number.
Banked
Address Space
| | Page n
+---------------+ 0x1010000
| |
| jsr _foo |
| .. | Page 3
| _foo: |
+---------------+ 0x100C000
| |
| call _bar |
| .. | Page 2
| _bar: |
+---------------+ 0x1008000
/------>| |
| | call _foo | Page 1
| | |
| +---------------+ 0x1004000
Physical | | |
Address Space | | | Page 0
| | |
+-----------+ 0x00FFFF | +---------------+ 0x1000000
| | |
| call _foo | |
| | |
+-----------+ 0x00BFFF -+---/
| | |
| | |
| | 16K |
| | |
+-----------+ 0x008000 -+
| |
| |
= =
| |
| |
+-----------+ 0000
The 'call _foo' must be relocated with page 3 and 16-bit address
mapped at 0x8000.
The 3-bit and 16-bit PC rel relocation is only used by 68HC12. */
static reloc_howto_type elf_m68hc11_howto_table[] = {
/* This reloc does nothing. */
HOWTO (R_M68HC11_NONE, /* type */
0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */
32, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M68HC12_NONE", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 8 bit absolute relocation */
HOWTO (R_M68HC11_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_M68HC12_8", /* name */
FALSE, /* partial_inplace */
0x00ff, /* src_mask */
0x00ff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 8 bit absolute relocation (upper address) */
HOWTO (R_M68HC11_HI8, /* type */
8, /* 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_M68HC12_HI8", /* name */
FALSE, /* partial_inplace */
0x00ff, /* src_mask */
0x00ff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 8 bit absolute relocation (upper address) */
HOWTO (R_M68HC11_LO8, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M68HC12_LO8", /* name */
FALSE, /* partial_inplace */
0x00ff, /* src_mask */
0x00ff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 8 bit PC-rel relocation */
HOWTO (R_M68HC11_PCREL_8, /* 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_M68HC12_PCREL_8", /* name */
FALSE, /* partial_inplace */
0x00ff, /* src_mask */
0x00ff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 16 bit absolute relocation */
HOWTO (R_M68HC11_16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont /*bitfield */ , /* complain_on_overflow */
m68hc12_elf_special_reloc, /* special_function */
"R_M68HC12_16", /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 32 bit absolute relocation. This one is never used for the
code relocation. It's used by gas for -gstabs generation. */
HOWTO (R_M68HC11_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_M68HC12_32", /* name */
FALSE, /* partial_inplace */
0xffffffff, /* src_mask */
0xffffffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 3 bit absolute relocation */
HOWTO (R_M68HC11_3B, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
3, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M68HC12_4B", /* name */
FALSE, /* partial_inplace */
0x003, /* src_mask */
0x003, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 16 bit PC-rel relocation */
HOWTO (R_M68HC11_PCREL_16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
TRUE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
bfd_elf_generic_reloc, /* special_function */
"R_M68HC12_PCREL_16", /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* GNU extension to record C++ vtable hierarchy */
HOWTO (R_M68HC11_GNU_VTINHERIT, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
NULL, /* special_function */
"R_M68HC11_GNU_VTINHERIT", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* GNU extension to record C++ vtable member usage */
HOWTO (R_M68HC11_GNU_VTENTRY, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
"R_M68HC11_GNU_VTENTRY", /* name */
FALSE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 24 bit relocation */
HOWTO (R_M68HC11_24, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
24, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
m68hc12_elf_special_reloc, /* special_function */
"R_M68HC12_24", /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A 16-bit low relocation */
HOWTO (R_M68HC11_LO16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
m68hc12_elf_special_reloc,/* special_function */
"R_M68HC12_LO16", /* name */
FALSE, /* partial_inplace */
0xffff, /* src_mask */
0xffff, /* dst_mask */
FALSE), /* pcrel_offset */
/* A page relocation */
HOWTO (R_M68HC11_PAGE, /* type */
0, /* rightshift */
0, /* size (0 = byte, 1 = short, 2 = long) */
8, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
m68hc12_elf_special_reloc,/* special_function */
"R_M68HC12_PAGE", /* name */
FALSE, /* partial_inplace */
0x00ff, /* src_mask */
0x00ff, /* dst_mask */
FALSE), /* pcrel_offset */
EMPTY_HOWTO (14),
EMPTY_HOWTO (15),
EMPTY_HOWTO (16),
EMPTY_HOWTO (17),
EMPTY_HOWTO (18),
EMPTY_HOWTO (19),
/* Mark beginning of a jump instruction (any form). */
HOWTO (R_M68HC11_RL_JUMP, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
m68hc11_elf_ignore_reloc, /* special_function */
"R_M68HC12_RL_JUMP", /* name */
TRUE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
TRUE), /* pcrel_offset */
/* Mark beginning of Gcc relaxation group instruction. */
HOWTO (R_M68HC11_RL_GROUP, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
0, /* bitsize */
FALSE, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
m68hc11_elf_ignore_reloc, /* special_function */
"R_M68HC12_RL_GROUP", /* name */
TRUE, /* partial_inplace */
0, /* src_mask */
0, /* dst_mask */
TRUE), /* pcrel_offset */
};
/* Map BFD reloc types to M68HC11 ELF reloc types. */
struct m68hc11_reloc_map
{
bfd_reloc_code_real_type bfd_reloc_val;
unsigned char elf_reloc_val;
};
static const struct m68hc11_reloc_map m68hc11_reloc_map[] = {
{BFD_RELOC_NONE, R_M68HC11_NONE,},
{BFD_RELOC_8, R_M68HC11_8},
{BFD_RELOC_M68HC11_HI8, R_M68HC11_HI8},
{BFD_RELOC_M68HC11_LO8, R_M68HC11_LO8},
{BFD_RELOC_8_PCREL, R_M68HC11_PCREL_8},
{BFD_RELOC_16_PCREL, R_M68HC11_PCREL_16},
{BFD_RELOC_16, R_M68HC11_16},
{BFD_RELOC_32, R_M68HC11_32},
{BFD_RELOC_M68HC11_3B, R_M68HC11_3B},
{BFD_RELOC_VTABLE_INHERIT, R_M68HC11_GNU_VTINHERIT},
{BFD_RELOC_VTABLE_ENTRY, R_M68HC11_GNU_VTENTRY},
{BFD_RELOC_M68HC11_LO16, R_M68HC11_LO16},
{BFD_RELOC_M68HC11_PAGE, R_M68HC11_PAGE},
{BFD_RELOC_M68HC11_24, R_M68HC11_24},
{BFD_RELOC_M68HC11_RL_JUMP, R_M68HC11_RL_JUMP},
{BFD_RELOC_M68HC11_RL_GROUP, R_M68HC11_RL_GROUP},
};
static reloc_howto_type *
bfd_elf32_bfd_reloc_type_lookup (abfd, code)
bfd *abfd ATTRIBUTE_UNUSED;
bfd_reloc_code_real_type code;
{
unsigned int i;
for (i = 0;
i < sizeof (m68hc11_reloc_map) / sizeof (struct m68hc11_reloc_map);
i++)
{
if (m68hc11_reloc_map[i].bfd_reloc_val == code)
return &elf_m68hc11_howto_table[m68hc11_reloc_map[i].elf_reloc_val];
}
return NULL;
}
/* This function is used for relocs which are only used for relaxing,
which the linker should otherwise ignore. */
static bfd_reloc_status_type
m68hc11_elf_ignore_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
bfd *abfd ATTRIBUTE_UNUSED;
arelent *reloc_entry;
asymbol *symbol ATTRIBUTE_UNUSED;
PTR data ATTRIBUTE_UNUSED;
asection *input_section;
bfd *output_bfd;
char **error_message ATTRIBUTE_UNUSED;
{
if (output_bfd != NULL)
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
static int
m68hc12_addr_is_banked (addr)
bfd_vma addr;
{
return (addr >= M68HC12_BANK_VIRT) ? 1 : 0;
}
/* Return the physical address seen by the processor, taking
into account banked memory. */
static bfd_vma
m68hc12_phys_addr (addr)
bfd_vma addr;
{
if (addr < M68HC12_BANK_VIRT)
return addr;
/* Map the address to the memory bank. */
addr -= M68HC12_BANK_VIRT;
addr &= M68HC12_BANK_MASK;
addr += M68HC12_BANK_BASE;
return addr;
}
/* Return the page number corresponding to an address in banked memory. */
static bfd_vma
m68hc12_phys_page (addr)
bfd_vma addr;
{
if (addr < M68HC12_BANK_VIRT)
return 0;
/* Map the address to the memory bank. */
addr -= M68HC12_BANK_VIRT;
addr >>= M68HC12_BANK_SHIFT;
addr &= M68HC12_BANK_PAGE_MASK;
return addr;
}
static bfd_reloc_status_type
m68hc12_elf_special_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message ATTRIBUTE_UNUSED;
{
reloc_howto_type *howto;
bfd_vma relocation;
bfd_vma phys_addr;
bfd_vma phys_page;
bfd_vma insn_page;
bfd_vma insn_addr;
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (! reloc_entry->howto->partial_inplace
|| reloc_entry->addend == 0))
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
if (output_bfd != NULL)
return bfd_reloc_continue;
if (reloc_entry->address > input_section->_cooked_size)
return bfd_reloc_outofrange;
/* Compute relocation. */
relocation = (symbol->value
+ symbol->section->output_section->vma
+ symbol->section->output_offset);
relocation += reloc_entry->addend;
relocation += bfd_get_16 (abfd, (bfd_byte*) data + reloc_entry->address);
/* Do the memory bank mapping. */
phys_addr = m68hc12_phys_addr (relocation);
phys_page = m68hc12_phys_page (relocation);
howto = reloc_entry->howto;
if (howto->complain_on_overflow != complain_overflow_dont
&& (phys_addr & (((bfd_vma) -1) << 16)))
return bfd_reloc_overflow;
switch (howto->type)
{
case R_M68HC11_16:
/* Get virtual address of instruction having the relocation. */
insn_addr = input_section->output_section->vma
+ input_section->output_offset
+ reloc_entry->address;
insn_page = m68hc12_phys_page (insn_addr);
if (m68hc12_addr_is_banked (relocation)
&& m68hc12_addr_is_banked (insn_addr)
&& phys_page != insn_page)
{
*error_message = _("address is not in the same bank");
return bfd_reloc_dangerous;
}
if (m68hc12_addr_is_banked (relocation)
&& !m68hc12_addr_is_banked (insn_addr))
{
*error_message = _("reference to a banked address in "
"the normal address space");
return bfd_reloc_dangerous;
}
case R_M68HC11_LO16:
bfd_put_16 (abfd, phys_addr, (bfd_byte*) data + reloc_entry->address);
break;
case R_M68HC11_24:
bfd_put_16 (abfd, phys_addr, (bfd_byte*) data + reloc_entry->address);
bfd_put_8 (abfd, phys_page, (bfd_byte*) data + reloc_entry->address + 2);
break;
case R_M68HC11_PAGE:
bfd_put_8 (abfd, phys_page, (bfd_byte*) data + reloc_entry->address);
break;
default:
abort ();
break;
}
return bfd_reloc_ok;
}
/* Set the howto pointer for an M68HC11 ELF reloc. */
static void
m68hc11_info_to_howto_rel (abfd, cache_ptr, dst)
bfd *abfd ATTRIBUTE_UNUSED;
arelent *cache_ptr;
Elf_Internal_Rela *dst;
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
BFD_ASSERT (r_type < (unsigned int) R_M68HC11_max);
cache_ptr->howto = &elf_m68hc11_howto_table[r_type];
}
static asection *
elf32_m68hc11_gc_mark_hook (sec, info, rel, h, sym)
asection *sec;
struct bfd_link_info *info ATTRIBUTE_UNUSED;
Elf_Internal_Rela *rel;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
{
if (h != NULL)
{
switch (ELF32_R_TYPE (rel->r_info))
{
default:
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
return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
return NULL;
}
static bfd_boolean
elf32_m68hc11_gc_sweep_hook (abfd, info, sec, relocs)
bfd *abfd ATTRIBUTE_UNUSED;
struct bfd_link_info *info ATTRIBUTE_UNUSED;
asection *sec ATTRIBUTE_UNUSED;
const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED;
{
/* We don't use got and plt entries for 68hc11/68hc12. */
return TRUE;
}
static bfd_boolean
m68hc12_elf_set_mach_from_flags (abfd)
bfd *abfd;
{
flagword flags = elf_elfheader (abfd)->e_flags;
switch (flags & EF_M68HC11_MACH_MASK)
{
case EF_M68HC12_MACH:
bfd_default_set_arch_mach (abfd, bfd_arch_m68hc12, bfd_mach_m6812);
break;
case EF_M68HCS12_MACH:
bfd_default_set_arch_mach (abfd, bfd_arch_m68hc12, bfd_mach_m6812s);
break;
case EF_M68HC11_GENERIC:
bfd_default_set_arch_mach (abfd, bfd_arch_m68hc12,
bfd_mach_m6812_default);
break;
default:
return FALSE;
}
return TRUE;
}
/* Set and control ELF flags in ELF header. */
bfd_boolean
_bfd_m68hc12_elf_set_private_flags (abfd, flags)
bfd *abfd;
flagword flags;
{
BFD_ASSERT (!elf_flags_init (abfd)
|| elf_elfheader (abfd)->e_flags == flags);
elf_elfheader (abfd)->e_flags = flags;
elf_flags_init (abfd) = TRUE;
return m68hc12_elf_set_mach_from_flags (abfd);
}
/* Merge backend specific data from an object file to the output
object file when linking. */
bfd_boolean
_bfd_m68hc12_elf_merge_private_bfd_data (ibfd, obfd)
bfd *ibfd;
bfd *obfd;
{
flagword old_flags;
flagword new_flags;
bfd_boolean ok = TRUE;
/* Check if we have the same endianess */
if (!_bfd_generic_verify_endian_match (ibfd, obfd))
return FALSE;
if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
|| bfd_get_flavour (obfd) != bfd_target_elf_flavour)
return TRUE;
new_flags = elf_elfheader (ibfd)->e_flags;
old_flags = elf_elfheader (obfd)->e_flags;
if (! elf_flags_init (obfd))
{
elf_flags_init (obfd) = TRUE;
elf_elfheader (obfd)->e_flags = new_flags;
elf_elfheader (obfd)->e_ident[EI_CLASS]
= elf_elfheader (ibfd)->e_ident[EI_CLASS];
if (bfd_get_arch (obfd) == bfd_get_arch (ibfd)
&& bfd_get_arch_info (obfd)->the_default)
{
if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
bfd_get_mach (ibfd)))
return FALSE;
}
return TRUE;
}
/* Check ABI compatibility. */
if ((new_flags & E_M68HC11_I32) != (old_flags & E_M68HC11_I32))
{
(*_bfd_error_handler)
(_("%s: linking files compiled for 16-bit integers (-mshort) "
"and others for 32-bit integers"),
bfd_archive_filename (ibfd));
ok = FALSE;
}
if ((new_flags & E_M68HC11_F64) != (old_flags & E_M68HC11_F64))
{
(*_bfd_error_handler)
(_("%s: linking files compiled for 32-bit double (-fshort-double) "
"and others for 64-bit double"),
bfd_archive_filename (ibfd));
ok = FALSE;
}
/* Processor compatibility. */
if (!EF_M68HC11_CAN_MERGE_MACH (new_flags, old_flags))
{
(*_bfd_error_handler)
(_("%s: linking files compiled for HCS12 with "
"others compiled for HC12"),
bfd_archive_filename (ibfd));
ok = FALSE;
}
new_flags = ((new_flags & ~EF_M68HC11_MACH_MASK)
| (EF_M68HC11_MERGE_MACH (new_flags, old_flags)));
elf_elfheader (obfd)->e_flags = new_flags;
/* Warn about any other mismatches */
new_flags &= ~(EF_M68HC11_ABI | EF_M68HC11_MACH_MASK);
old_flags &= ~(EF_M68HC11_ABI | EF_M68HC11_MACH_MASK);
if (new_flags != old_flags)
{
(*_bfd_error_handler)
(_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
bfd_archive_filename (ibfd), (unsigned long) new_flags,
(unsigned long) old_flags);
ok = FALSE;
}
if (! ok)
{
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
return TRUE;
}
bfd_boolean
_bfd_m68hc12_elf_print_private_bfd_data (abfd, ptr)
bfd *abfd;
PTR ptr;
{
FILE *file = (FILE *) ptr;
BFD_ASSERT (abfd != NULL && ptr != NULL);
/* Print normal ELF private data. */
_bfd_elf_print_private_bfd_data (abfd, ptr);
/* xgettext:c-format */
fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
if (elf_elfheader (abfd)->e_flags & E_M68HC11_I32)
fprintf (file, _("[abi=32-bit int,"));
else
fprintf (file, _("[abi=16-bit int,"));
if (elf_elfheader (abfd)->e_flags & E_M68HC11_F64)
fprintf (file, _(" 64-bit double,"));
else
fprintf (file, _(" 32-bit double,"));
if (elf_elfheader (abfd)->e_flags & EF_M68HCS12_MACH)
fprintf (file, _(" cpu=HCS12]"));
else
fprintf (file, _(" cpu=HC12]"));
fputc ('\n', file);
return TRUE;
}
#define ELF_ARCH bfd_arch_m68hc12
#define ELF_MACHINE_CODE EM_68HC12
#define ELF_MAXPAGESIZE 0x1000
#define TARGET_BIG_SYM bfd_elf32_m68hc12_vec
#define TARGET_BIG_NAME "elf32-m68hc12"
#define elf_info_to_howto 0
#define elf_info_to_howto_rel m68hc11_info_to_howto_rel
#define elf_backend_gc_mark_hook elf32_m68hc11_gc_mark_hook
#define elf_backend_gc_sweep_hook elf32_m68hc11_gc_sweep_hook
#define elf_backend_object_p m68hc12_elf_set_mach_from_flags
#define elf_backend_final_write_processing 0
/* Disabled as this backend uses the generic linker. */
#define elf_backend_can_gc_sections 0
#define bfd_elf32_bfd_merge_private_bfd_data \
_bfd_m68hc12_elf_merge_private_bfd_data
#define bfd_elf32_bfd_set_private_flags _bfd_m68hc12_elf_set_private_flags
#define bfd_elf32_bfd_print_private_bfd_data \
_bfd_m68hc12_elf_print_private_bfd_data
#include "elf32-target.h"