787 lines
23 KiB
C
787 lines
23 KiB
C
/* Motorola 68HC12-specific support for 32-bit ELF
|
||
Copyright 1999, 2000, 2002 Free Software Foundation, Inc.
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Contributed by Stephane Carrez (stcarrez@nerim.fr)
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(Heavily copied from the D10V port by Martin Hunt (hunt@cygnus.com))
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "libbfd.h"
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#include "elf-bfd.h"
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#include "elf/m68hc11.h"
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#include "opcode/m68hc11.h"
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static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
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PARAMS ((bfd *, bfd_reloc_code_real_type));
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static void m68hc11_info_to_howto_rel
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PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *));
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static bfd_reloc_status_type m68hc11_elf_ignore_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static bfd_reloc_status_type m68hc12_elf_special_reloc
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PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
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static int m68hc12_addr_is_banked PARAMS ((bfd_vma));
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static bfd_vma m68hc12_phys_addr PARAMS ((bfd_vma));
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static bfd_vma m68hc12_phys_page PARAMS ((bfd_vma));
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/* GC mark and sweep. */
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static asection *elf32_m68hc11_gc_mark_hook
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PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
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struct elf_link_hash_entry *, Elf_Internal_Sym *));
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static boolean elf32_m68hc11_gc_sweep_hook
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PARAMS ((bfd *, struct bfd_link_info *, asection *,
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const Elf_Internal_Rela *));
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boolean _bfd_m68hc12_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
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boolean _bfd_m68hc12_elf_set_private_flags PARAMS ((bfd *, flagword));
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boolean _bfd_m68hc12_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
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/* Use REL instead of RELA to save space */
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#define USE_REL
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/* The Motorola 68HC11 microcontroler only addresses 64Kb.
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We must handle 8 and 16-bit relocations. The 32-bit relocation
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is defined but not used except by gas when -gstabs is used (which
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is wrong).
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The 68HC12 microcontroler has a memory bank switching system
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with a 16Kb window in the 64Kb address space. The extended memory
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is mapped in the 16Kb window (at 0x8000). The page register controls
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which 16Kb bank is mapped. The call/rtc instructions take care of
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bank switching in function calls/returns.
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For GNU Binutils to work, we consider there is a physical memory
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at 0..0x0ffff and a kind of virtual memory above that. Symbols
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in virtual memory have their addresses treated in a special way
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when disassembling and when linking.
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For the linker to work properly, we must always relocate the virtual
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memory as if it is mapped at 0x8000. When a 16-bit relocation is
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made in the virtual memory, we check that it does not cross the
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memory bank where it is used. This would involve a page change
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which would be wrong. The 24-bit relocation is for that and it
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treats the address as a physical address + page number.
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Banked
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Address Space
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| | Page n
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+---------------+ 0x1010000
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| |
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| jsr _foo |
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| .. | Page 3
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| _foo: |
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+---------------+ 0x100C000
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| |
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| call _bar |
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| .. | Page 2
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| _bar: |
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+---------------+ 0x1008000
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/------>| |
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| | call _foo | Page 1
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| | |
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| +---------------+ 0x1004000
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Physical | | |
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Address Space | | | Page 0
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| | |
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+-----------+ 0x00FFFF | +---------------+ 0x1000000
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| | |
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| call _foo | |
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| | |
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+-----------+ 0x00BFFF -+---/
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| | |
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| | |
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| | 16K |
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| | |
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+-----------+ 0x008000 -+
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| |
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| |
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= =
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| |
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| |
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+-----------+ 0000
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The 'call _foo' must be relocated with page 3 and 16-bit address
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mapped at 0x8000.
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The 3-bit and 16-bit PC rel relocation is only used by 68HC12. */
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static reloc_howto_type elf_m68hc11_howto_table[] = {
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/* This reloc does nothing. */
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HOWTO (R_M68HC11_NONE, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont,/* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_M68HC12_NONE", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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false), /* pcrel_offset */
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/* A 8 bit absolute relocation */
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HOWTO (R_M68HC11_8, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_M68HC12_8", /* name */
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false, /* partial_inplace */
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0x00ff, /* src_mask */
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0x00ff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 8 bit absolute relocation (upper address) */
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HOWTO (R_M68HC11_HI8, /* type */
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8, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_M68HC12_HI8", /* name */
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false, /* partial_inplace */
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0x00ff, /* src_mask */
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0x00ff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 8 bit absolute relocation (upper address) */
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HOWTO (R_M68HC11_LO8, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_M68HC12_LO8", /* name */
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false, /* partial_inplace */
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0x00ff, /* src_mask */
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0x00ff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 8 bit PC-rel relocation */
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HOWTO (R_M68HC11_PCREL_8, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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8, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_M68HC12_PCREL_8", /* name */
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false, /* partial_inplace */
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0x00ff, /* src_mask */
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0x00ff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 16 bit absolute relocation */
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HOWTO (R_M68HC11_16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont /*bitfield */ , /* complain_on_overflow */
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m68hc12_elf_special_reloc, /* special_function */
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"R_M68HC12_16", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 32 bit absolute relocation. This one is never used for the
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code relocation. It's used by gas for -gstabs generation. */
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HOWTO (R_M68HC11_32, /* type */
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0, /* rightshift */
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2, /* size (0 = byte, 1 = short, 2 = long) */
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32, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_M68HC12_32", /* name */
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false, /* partial_inplace */
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0xffffffff, /* src_mask */
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0xffffffff, /* dst_mask */
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false), /* pcrel_offset */
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/* A 3 bit absolute relocation */
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HOWTO (R_M68HC11_3B, /* type */
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0, /* rightshift */
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0, /* size (0 = byte, 1 = short, 2 = long) */
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3, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_bitfield, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_M68HC12_4B", /* name */
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false, /* partial_inplace */
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0x003, /* src_mask */
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0x003, /* dst_mask */
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false), /* pcrel_offset */
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/* A 16 bit PC-rel relocation */
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HOWTO (R_M68HC11_PCREL_16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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true, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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bfd_elf_generic_reloc, /* special_function */
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"R_M68HC12_PCREL_16", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
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/* GNU extension to record C++ vtable hierarchy */
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HOWTO (R_M68HC11_GNU_VTINHERIT, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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NULL, /* special_function */
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"R_M68HC11_GNU_VTINHERIT", /* name */
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false, /* partial_inplace */
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0, /* src_mask */
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0, /* dst_mask */
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false), /* pcrel_offset */
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||
|
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/* GNU extension to record C++ vtable member usage */
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HOWTO (R_M68HC11_GNU_VTENTRY, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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0, /* bitsize */
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false, /* pc_relative */
|
||
0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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||
_bfd_elf_rel_vtable_reloc_fn, /* special_function */
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"R_M68HC11_GNU_VTENTRY", /* name */
|
||
false, /* partial_inplace */
|
||
0, /* src_mask */
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||
0, /* dst_mask */
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||
false), /* pcrel_offset */
|
||
|
||
/* A 24 bit relocation */
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HOWTO (R_M68HC11_24, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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24, /* bitsize */
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false, /* pc_relative */
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0, /* bitpos */
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complain_overflow_dont, /* complain_on_overflow */
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m68hc12_elf_special_reloc, /* special_function */
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"R_M68HC12_24", /* name */
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false, /* partial_inplace */
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0xffff, /* src_mask */
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0xffff, /* dst_mask */
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false), /* pcrel_offset */
|
||
|
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/* A 16-bit low relocation */
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HOWTO (R_M68HC11_LO16, /* type */
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0, /* rightshift */
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1, /* size (0 = byte, 1 = short, 2 = long) */
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16, /* bitsize */
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false, /* pc_relative */
|
||
0, /* bitpos */
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||
complain_overflow_dont, /* complain_on_overflow */
|
||
m68hc12_elf_special_reloc,/* special_function */
|
||
"R_M68HC12_LO16", /* name */
|
||
false, /* partial_inplace */
|
||
0xffff, /* src_mask */
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||
0xffff, /* dst_mask */
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||
false), /* pcrel_offset */
|
||
|
||
/* A page relocation */
|
||
HOWTO (R_M68HC11_PAGE, /* type */
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||
0, /* rightshift */
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||
0, /* size (0 = byte, 1 = short, 2 = long) */
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||
8, /* bitsize */
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||
false, /* pc_relative */
|
||
0, /* bitpos */
|
||
complain_overflow_dont, /* complain_on_overflow */
|
||
m68hc12_elf_special_reloc,/* special_function */
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||
"R_M68HC12_PAGE", /* name */
|
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false, /* partial_inplace */
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||
0x00ff, /* src_mask */
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||
0x00ff, /* dst_mask */
|
||
false), /* pcrel_offset */
|
||
|
||
EMPTY_HOWTO (14),
|
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EMPTY_HOWTO (15),
|
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EMPTY_HOWTO (16),
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EMPTY_HOWTO (17),
|
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EMPTY_HOWTO (18),
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EMPTY_HOWTO (19),
|
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|
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/* 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;
|
||
Elf32_Internal_Rel *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 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;
|
||
}
|
||
|
||
|
||
/* Set and control ELF flags in ELF header. */
|
||
|
||
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 true;
|
||
}
|
||
|
||
/* Merge backend specific data from an object file to the output
|
||
object file when linking. */
|
||
|
||
boolean
|
||
_bfd_m68hc12_elf_merge_private_bfd_data (ibfd, obfd)
|
||
bfd *ibfd;
|
||
bfd *obfd;
|
||
{
|
||
flagword old_flags;
|
||
flagword new_flags;
|
||
boolean ok = true;
|
||
|
||
/* Check if we have the same endianess */
|
||
if (_bfd_generic_verify_endian_match (ibfd, obfd) == false)
|
||
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;
|
||
elf_elfheader (obfd)->e_flags |= new_flags & EF_M68HC11_ABI;
|
||
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;
|
||
}
|
||
new_flags &= ~EF_M68HC11_ABI;
|
||
old_flags &= ~EF_M68HC11_ABI;
|
||
|
||
/* Warn about any other mismatches */
|
||
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;
|
||
}
|
||
|
||
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]"));
|
||
|
||
fputc ('\n', file);
|
||
|
||
return true;
|
||
}
|
||
|
||
/* Below is the only difference between elf32-m68hc12.c and elf32-m68hc11.c.
|
||
The Motorola spec says to use a different Elf machine code. */
|
||
#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 0
|
||
#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"
|