mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-03 04:12:10 +08:00
2f3508ad05
all uses of bfd_target * to be const bfd_target *. Change bfd_target_vector and bfd_default_vector arrays to be const bfd_target * const *.
606 lines
16 KiB
C
606 lines
16 KiB
C
/* BFD back-end for Hitachi H8/300 COFF binaries.
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Copyright 1990, 1991, 1992, 1993, 1994 Free Software Foundation, Inc.
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Written by Steve Chamberlain, <sac@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., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "bfd.h"
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#include "sysdep.h"
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#include "obstack.h"
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#include "libbfd.h"
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#include "bfdlink.h"
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#include "coff/h8300.h"
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#include "coff/internal.h"
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#include "libcoff.h"
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static reloc_howto_type howto_table[] =
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{
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HOWTO (R_RELBYTE, 0, 0, 8, false, 0, complain_overflow_bitfield, 0, "8", true, 0x000000ff, 0x000000ff, false),
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HOWTO (R_RELWORD, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "16", true, 0x0000ffff, 0x0000ffff, false),
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HOWTO (R_RELLONG, 0, 2, 32, false, 0, complain_overflow_bitfield, 0, "32", true, 0xffffffff, 0xffffffff, false),
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HOWTO (R_PCRBYTE, 0, 0, 8, true, 0, complain_overflow_signed, 0, "DISP8", true, 0x000000ff, 0x000000ff, true),
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HOWTO (R_PCRWORD, 0, 1, 16, true, 0, complain_overflow_signed, 0, "DISP16", true, 0x0000ffff, 0x0000ffff, true),
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HOWTO (R_PCRLONG, 0, 2, 32, true, 0, complain_overflow_signed, 0, "DISP32", true, 0xffffffff, 0xffffffff, true),
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HOWTO (R_MOVB1, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "16/8", true, 0x0000ffff, 0x0000ffff, false),
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HOWTO (R_MOVB2, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "8/16", true, 0x0000ffff, 0x0000ffff, false),
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HOWTO (R_JMP1, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "16/pcrel", true, 0x0000ffff, 0x0000ffff, false),
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HOWTO (R_JMP2, 0, 0, 8, false, 0, complain_overflow_bitfield, 0, "pcrecl/16", true, 0x000000ff, 0x000000ff, false),
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HOWTO (R_JMPL1, 0, 2, 32, false, 0, complain_overflow_bitfield, 0, "24/pcrell", true, 0x00ffffff, 0x00ffffff, false),
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HOWTO (R_JMPL_B8, 0, 0, 8, false, 0, complain_overflow_bitfield, 0, "pc8/24", true, 0x000000ff, 0x000000ff, false),
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HOWTO (R_MOVLB1, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "24/8", true, 0x0000ffff, 0x0000ffff, false),
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HOWTO (R_MOVLB2, 0, 1, 16, false, 0, complain_overflow_bitfield, 0, "8/24", true, 0x0000ffff, 0x0000ffff, false),
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};
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/* Turn a howto into a reloc number */
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#define SELECT_RELOC(x,howto) \
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{ x.r_type = select_reloc(howto); }
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#define BADMAG(x) (H8300BADMAG(x)&& H8300HBADMAG(x))
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#define H8300 1 /* Customize coffcode.h */
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#define __A_MAGIC_SET__
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/* Code to swap in the reloc */
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#define SWAP_IN_RELOC_OFFSET bfd_h_get_32
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#define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
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#define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
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dst->r_stuff[0] = 'S'; \
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dst->r_stuff[1] = 'C';
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static int
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select_reloc (howto)
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reloc_howto_type *howto;
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{
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return howto->type;
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}
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/* Code to turn a r_type into a howto ptr, uses the above howto table
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*/
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static void
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rtype2howto (internal, dst)
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arelent *internal;
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struct internal_reloc *dst;
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{
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switch (dst->r_type)
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{
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case R_RELBYTE:
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internal->howto = howto_table + 0;
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break;
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case R_RELWORD:
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internal->howto = howto_table + 1;
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break;
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case R_RELLONG:
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internal->howto = howto_table + 2;
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break;
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case R_PCRBYTE:
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internal->howto = howto_table + 3;
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break;
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case R_PCRWORD:
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internal->howto = howto_table + 4;
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break;
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case R_PCRLONG:
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internal->howto = howto_table + 5;
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break;
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case R_MOVB1:
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internal->howto = howto_table + 6;
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break;
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case R_MOVB2:
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internal->howto = howto_table + 7;
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break;
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case R_JMP1:
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internal->howto = howto_table + 8;
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break;
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case R_JMP2:
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internal->howto = howto_table + 9;
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break;
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case R_JMPL1:
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internal->howto = howto_table + 10;
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break;
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case R_JMPL_B8:
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internal->howto = howto_table + 11;
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break;
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case R_MOVLB1:
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internal->howto = howto_table + 12;
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break;
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case R_MOVLB2:
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internal->howto = howto_table + 13;
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break;
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default:
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fprintf (stderr, "Bad reloc\n");
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break;
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}
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}
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#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
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/* Perform any necessaru magic to the addend in a reloc entry */
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#define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
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cache_ptr->addend = ext_reloc.r_offset;
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#define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
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reloc_processing(relent, reloc, symbols, abfd, section)
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static void
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reloc_processing (relent, reloc, symbols, abfd, section)
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arelent * relent;
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struct internal_reloc *reloc;
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asymbol ** symbols;
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bfd * abfd;
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asection * section;
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{
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relent->address = reloc->r_vaddr;
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rtype2howto (relent, reloc);
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if (((int) reloc->r_symndx) > 0)
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{
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relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
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}
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else
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{
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relent->sym_ptr_ptr = &(bfd_abs_symbol);
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}
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relent->addend = reloc->r_offset;
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relent->address -= section->vma;
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/* relent->section = 0;*/
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}
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static int
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h8300_reloc16_estimate(abfd, input_section, reloc, shrink, link_info)
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bfd *abfd;
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asection *input_section;
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arelent *reloc;
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unsigned int shrink;
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struct bfd_link_info *link_info;
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{
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bfd_vma value;
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bfd_vma dot;
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bfd_vma gap;
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/* The address of the thing to be relocated will have moved back by
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the size of the shrink - but we don't change reloc->address here,
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since we need it to know where the relocation lives in the source
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uncooked section */
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/* reloc->address -= shrink; conceptual */
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bfd_vma address = reloc->address - shrink;
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switch (reloc->howto->type)
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{
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case R_MOVB2:
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case R_JMP2:
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shrink+=2;
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break;
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/* Thing is a move one byte */
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case R_MOVB1:
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value = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
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if (value >= 0xff00)
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{
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/* Change the reloc type from 16bit, possible 8 to 8bit
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possible 16 */
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reloc->howto = reloc->howto + 1;
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/* The place to relc moves back by one */
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/* This will be two bytes smaller in the long run */
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shrink +=2 ;
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bfd_perform_slip(abfd, 2, input_section, address);
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}
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break;
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/* This is the 24 bit branch which could become an 8 bitter,
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the relocation points to the first byte of the insn, not the
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actual data */
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case R_JMPL1:
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value = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
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dot = input_section->output_section->vma +
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input_section->output_offset + address;
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/* See if the address we're looking at within 127 bytes of where
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we are, if so then we can use a small branch rather than the
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jump we were going to */
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gap = value - dot ;
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if (-120 < (long)gap && (long)gap < 120 )
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{
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/* Change the reloc type from 24bit, possible 8 to 8bit
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possible 32 */
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reloc->howto = reloc->howto + 1;
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/* This will be two bytes smaller in the long run */
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shrink +=2 ;
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bfd_perform_slip(abfd, 2, input_section, address);
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}
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break;
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case R_JMP1:
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value = bfd_coff_reloc16_get_value(reloc, link_info, input_section);
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dot = input_section->output_section->vma +
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input_section->output_offset + address;
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/* See if the address we're looking at within 127 bytes of where
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we are, if so then we can use a small branch rather than the
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jump we were going to */
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gap = value - (dot - shrink);
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if (-120 < (long)gap && (long)gap < 120 )
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{
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/* Change the reloc type from 16bit, possible 8 to 8bit
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possible 16 */
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reloc->howto = reloc->howto + 1;
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/* The place to relc moves back by one */
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/* This will be two bytes smaller in the long run */
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shrink +=2 ;
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bfd_perform_slip(abfd, 2, input_section, address);
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}
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break;
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}
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return shrink;
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}
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/* First phase of a relaxing link */
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/* Reloc types
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large small
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R_MOVB1 R_MOVB2 mov.b with 16bit or 8 bit address
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R_JMP1 R_JMP2 jmp or pcrel branch
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R_JMPL1 R_JMPL_B8 24jmp or pcrel branch
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R_MOVLB1 R_MOVLB2 24 or 8 bit reloc for mov.b
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*/
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static void
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h8300_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
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dst_ptr)
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bfd *abfd;
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struct bfd_link_info *link_info;
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struct bfd_link_order *link_order;
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arelent *reloc;
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bfd_byte *data;
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unsigned int *src_ptr;
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unsigned int *dst_ptr;
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{
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unsigned int src_address = *src_ptr;
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unsigned int dst_address = *dst_ptr;
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asection *input_section = link_order->u.indirect.section;
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switch (reloc->howto->type)
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{
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/* A 24 bit branch which could be a 8 bit pcrel, really pointing to
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the byte before the 24bit hole, so we can treat it as a 32bit pointer */
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case R_PCRBYTE:
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{
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bfd_vma dot = link_order->offset
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+ dst_address
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+ link_order->u.indirect.section->output_section->vma;
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int gap = (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
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- dot);
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if (gap > 127 || gap < -128)
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{
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if (! ((*link_info->callbacks->reloc_overflow)
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(link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
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reloc->howto->name, reloc->addend, input_section->owner,
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input_section, reloc->address)))
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abort ();
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}
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bfd_put_8 (abfd, gap, data + dst_address);
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dst_address++;
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src_address++;
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break;
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}
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case R_PCRWORD:
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{
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bfd_vma dot = link_order->offset
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+ dst_address
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+ link_order->u.indirect.section->output_section->vma;
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int gap = (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
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- dot) - 1;
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if (gap > 32767 || gap < -32768)
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{
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if (! ((*link_info->callbacks->reloc_overflow)
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(link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
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reloc->howto->name, reloc->addend, input_section->owner,
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input_section, reloc->address)))
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abort ();
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}
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bfd_put_16 (abfd, gap, data + dst_address);
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dst_address+=2;
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src_address+=2;
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break;
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}
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case R_RELBYTE:
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{
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unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
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input_section);
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if (gap > 0xff && gap < ~0xff)
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{
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if (! ((*link_info->callbacks->reloc_overflow)
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(link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
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reloc->howto->name, reloc->addend, input_section->owner,
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input_section, reloc->address)))
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abort ();
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}
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bfd_put_8 (abfd, gap, data + dst_address);
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dst_address += 1;
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src_address += 1;
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}
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break;
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case R_JMP1:
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/* A relword which would have like to have been a pcrel */
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case R_MOVB1:
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/* A relword which would like to have been modified but
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didn't make it */
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case R_RELWORD:
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bfd_put_16 (abfd,
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bfd_coff_reloc16_get_value (reloc, link_info, input_section),
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data + dst_address);
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dst_address += 2;
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src_address += 2;
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break;
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case R_RELLONG:
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bfd_put_32 (abfd,
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bfd_coff_reloc16_get_value (reloc, link_info, input_section),
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data + dst_address);
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dst_address += 4;
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src_address += 4;
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break;
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case R_MOVB2:
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/* Special relaxed type, there will be a gap between where we
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get stuff from and where we put stuff to now
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for a mov.b @aa:16 -> mov.b @aa:8
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opcode 0x6a 0x0y offset
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-> 0x2y off
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*/
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if (data[dst_address - 1] != 0x6a)
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abort ();
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switch (data[src_address] & 0xf0)
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{
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case 0x00:
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/* Src is memory */
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data[dst_address - 1] = (data[src_address] & 0xf) | 0x20;
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break;
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case 0x80:
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/* Src is reg */
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data[dst_address - 1] = (data[src_address] & 0xf) | 0x30;
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break;
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default:
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abort ();
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}
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/* the offset must fit ! after all, what was all the relaxing
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about ? */
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bfd_put_8 (abfd,
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bfd_coff_reloc16_get_value (reloc, link_info, input_section),
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data + dst_address);
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/* Note the magic - src goes up by two bytes, but dst by only
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one */
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dst_address += 1;
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src_address += 3;
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break;
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case R_JMP2:
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/* Speciial relaxed type */
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{
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bfd_vma dot = link_order->offset
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+ dst_address
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+ link_order->u.indirect.section->output_section->vma;
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int gap = (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
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- dot - 1);
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if ((gap & ~0xff) != 0 && ((gap & 0xff00) != 0xff00))
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abort ();
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bfd_put_8 (abfd, gap, data + dst_address);
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switch (data[dst_address - 1])
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{
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case 0x5e:
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/* jsr -> bsr */
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bfd_put_8 (abfd, 0x55, data + dst_address - 1);
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break;
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case 0x5a:
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/* jmp ->bra */
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bfd_put_8 (abfd, 0x40, data + dst_address - 1);
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break;
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default:
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abort ();
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}
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dst_address++;
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src_address += 3;
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break;
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}
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break;
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case R_JMPL_B8: /* 24 bit branch which is now 8 bits */
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/* Speciial relaxed type */
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{
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bfd_vma dot = link_order->offset
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+ dst_address
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+ link_order->u.indirect.section->output_section->vma;
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int gap = (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
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- dot - 2);
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if ((gap & ~0xff) != 0 && ((gap & 0xff00) != 0xff00))
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abort ();
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switch (data[src_address])
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{
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case 0x5e:
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/* jsr -> bsr */
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bfd_put_8 (abfd, 0x55, data + dst_address);
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break;
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case 0x5a:
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/* jmp ->bra */
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bfd_put_8 (abfd, 0x40, data + dst_address);
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break;
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default:
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bfd_put_8 (abfd, 0xde, data + dst_address);
|
|
break;
|
|
}
|
|
|
|
bfd_put_8 (abfd, gap, data + dst_address + 1);
|
|
dst_address += 2;
|
|
src_address += 4;
|
|
|
|
break;
|
|
}
|
|
|
|
case R_JMPL1:
|
|
{
|
|
int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
|
|
int o = bfd_get_32 (abfd, data + src_address);
|
|
v = (v & 0x00ffffff) | (o & 0xff000000);
|
|
bfd_put_32 (abfd, v, data + dst_address);
|
|
dst_address += 4;
|
|
src_address += 4;
|
|
}
|
|
|
|
break;
|
|
|
|
|
|
/* A 24 bit mov which could be an 8 bit move, really pointing to
|
|
the byte before the 24bit hole, so we can treat it as a 32bit pointer */
|
|
case R_MOVLB1:
|
|
{
|
|
int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
|
|
int o = bfd_get_32 (abfd, data + dst_address);
|
|
v = (v & 0x00ffffff) | (o & 0xff000000);
|
|
bfd_put_32 (abfd, v, data + dst_address);
|
|
dst_address += 4;
|
|
src_address += 4;
|
|
}
|
|
|
|
break;
|
|
default:
|
|
|
|
abort ();
|
|
break;
|
|
|
|
}
|
|
*src_ptr = src_address;
|
|
*dst_ptr = dst_address;
|
|
|
|
}
|
|
|
|
#define coff_reloc16_extra_cases h8300_reloc16_extra_cases
|
|
#define coff_reloc16_estimate h8300_reloc16_estimate
|
|
|
|
#include "coffcode.h"
|
|
|
|
|
|
#undef coff_bfd_get_relocated_section_contents
|
|
#undef coff_bfd_relax_section
|
|
#define coff_bfd_get_relocated_section_contents \
|
|
bfd_coff_reloc16_get_relocated_section_contents
|
|
#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
|
|
|
|
|
|
|
|
const bfd_target h8300coff_vec =
|
|
{
|
|
"coff-h8300", /* name */
|
|
bfd_target_coff_flavour,
|
|
true, /* data byte order is big */
|
|
true, /* header byte order is big */
|
|
|
|
(HAS_RELOC | EXEC_P | /* object flags */
|
|
HAS_LINENO | HAS_DEBUG |
|
|
HAS_SYMS | HAS_LOCALS | WP_TEXT | BFD_IS_RELAXABLE ),
|
|
(SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_RELOC), /* section flags */
|
|
'_', /* leading char */
|
|
'/', /* ar_pad_char */
|
|
15, /* ar_max_namelen */
|
|
1, /* minimum section alignment */
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* data */
|
|
bfd_getb64, bfd_getb_signed_64, bfd_putb64,
|
|
bfd_getb32, bfd_getb_signed_32, bfd_putb32,
|
|
bfd_getb16, bfd_getb_signed_16, bfd_putb16, /* hdrs */
|
|
|
|
{_bfd_dummy_target, coff_object_p, /* bfd_check_format */
|
|
bfd_generic_archive_p, _bfd_dummy_target},
|
|
{bfd_false, coff_mkobject, _bfd_generic_mkarchive, /* bfd_set_format */
|
|
bfd_false},
|
|
{bfd_false, coff_write_object_contents, /* bfd_write_contents */
|
|
_bfd_write_archive_contents, bfd_false},
|
|
|
|
BFD_JUMP_TABLE_GENERIC (coff),
|
|
BFD_JUMP_TABLE_COPY (coff),
|
|
BFD_JUMP_TABLE_CORE (_bfd_nocore),
|
|
BFD_JUMP_TABLE_ARCHIVE (_bfd_archive_coff),
|
|
BFD_JUMP_TABLE_SYMBOLS (coff),
|
|
BFD_JUMP_TABLE_RELOCS (coff),
|
|
BFD_JUMP_TABLE_WRITE (coff),
|
|
BFD_JUMP_TABLE_LINK (coff),
|
|
BFD_JUMP_TABLE_DYNAMIC (_bfd_nodynamic),
|
|
|
|
COFF_SWAP_TABLE,
|
|
};
|