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/* BFD back-end for WDC 65816 COFF binaries.
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Copyright 1995, 1996, 1997, 1999, 2000, 2001 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#include "coff/internal.h"
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static int select_reloc PARAMS ((reloc_howto_type *));
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static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));
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static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
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static int w65_reloc16_estimate PARAMS ((bfd *, asection *, arelent *, unsigned int, struct bfd_link_info *));
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static void w65_reloc16_extra_cases PARAMS ((bfd *,struct bfd_link_info *, struct bfd_link_order *, arelent *, bfd_byte *, unsigned int *, unsigned int *));
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
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static reloc_howto_type howto_table[] =
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HOWTO (R_W65_ABS8, 0, 0, 8, false, 0, complain_overflow_bitfield, 0, "abs8", true, 0x000000ff, 0x000000ff, false),
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HOWTO (R_W65_ABS16, 1, 0, 16, false, 0, complain_overflow_bitfield, 0, "abs16", true, 0x0000ffff, 0x0000ffff, false),
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HOWTO (R_W65_ABS24, 0, 2, 32, false, 0, complain_overflow_bitfield, 0, "abs24", true, 0x00ffffff, 0x00ffffff, false),
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HOWTO (R_W65_ABS8S8, 0, 0, 8, false, 0, complain_overflow_bitfield, 0, ">abs8", true, 0x000000ff, 0x000000ff, false),
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HOWTO (R_W65_ABS8S16, 0, 0, 8, false, 0, complain_overflow_bitfield, 0, "^abs8", true, 0x000000ff, 0x000000ff, false),
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HOWTO (R_W65_ABS16S8, 1, 0, 16, false, 0, complain_overflow_bitfield, 0, ">abs16", true, 0x0000ffff, 0x0000ffff, false),
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HOWTO (R_W65_ABS16S16,1, 0, 16, false, 0, complain_overflow_bitfield, 0, "^abs16", true, 0x0000ffff, 0x0000ffff, false),
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HOWTO (R_W65_PCR8, 0, 0, 8, false, 0, complain_overflow_bitfield, 0, "pcrel8", true, 0x000000ff, 0x000000ff, true),
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HOWTO (R_W65_PCR16, 1, 0, 16, false, 0, complain_overflow_bitfield, 0, "pcrel16", true, 0x0000ffff, 0x0000ffff, true),
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HOWTO (R_W65_DP, 0, 0, 8, false, 0, complain_overflow_bitfield, 0, "dp", true, 0x000000ff, 0x000000ff, false),
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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) (W65BADMAG(x))
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#define W65 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 H_GET_32
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#define SWAP_OUT_RELOC_OFFSET 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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reloc_howto_type *howto;
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/* Code to turn a r_type into a howto ptr, uses the above howto table. */
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rtype2howto (internal, dst)
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struct internal_reloc *dst;
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internal->howto = howto_table + dst->r_type - 1;
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#define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
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/* Perform any necessary 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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reloc_processing (relent, reloc, symbols, abfd, section)
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struct internal_reloc *reloc;
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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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relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
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relent->sym_ptr_ptr = (asymbol **)&(bfd_abs_symbol);
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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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w65_reloc16_estimate (abfd, input_section, reloc, shrink, link_info)
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asection *input_section;
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struct bfd_link_info *link_info;
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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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/* 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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/* Thing is a move one byte. */
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value = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
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/* Change the reloc type from 16bit, possible 8 to 8bit
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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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bfd_perform_slip (abfd, 2, input_section, address);
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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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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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if (-120 < (long) gap && (long) gap < 120)
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/* Change the reloc type from 24bit, possible 8 to 8bit
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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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bfd_perform_slip (abfd, 2, input_section, address);
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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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/* Change the reloc type from 16bit, possible 8 to 8bit
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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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bfd_perform_slip (abfd, 2, input_section, address);
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/* First phase of a relaxing link. */
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R_MOV16B1 R_MOV16B2 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_MOV24B1 R_MOV24B2 24 or 8 bit reloc for mov.b */
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w65_reloc16_extra_cases (abfd, link_info, link_order, reloc, data, src_ptr,
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struct bfd_link_info *link_info;
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struct bfd_link_order *link_order;
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unsigned int *src_ptr;
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unsigned int *dst_ptr;
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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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unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
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bfd_put_8 (abfd, gap, data + dst_address);
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unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
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bfd_put_8 (abfd, gap, data + dst_address);
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unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
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bfd_put_8 (abfd, gap, data + dst_address);
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unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
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bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
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unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
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bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
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unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
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bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
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unsigned int gap = bfd_coff_reloc16_get_value (reloc, link_info,
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bfd_put_16 (abfd, (bfd_vma) gap, data + dst_address);
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bfd_put_8 (abfd, gap >> 16, data+dst_address + 2);
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int gap = bfd_coff_reloc16_get_value (reloc, link_info,
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bfd_vma dot = link_order->offset
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+ link_order->u.indirect.section->output_section->vma;
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if (gap < -128 || gap > 127)
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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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bfd_put_8 (abfd, gap, data + dst_address);
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bfd_vma gap = bfd_coff_reloc16_get_value (reloc, link_info,
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bfd_vma dot = link_order->offset
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+ link_order->u.indirect.section->output_section->vma;
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/* This wraps within the page, so ignore the relativeness, look at the
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if ((gap & 0xf0000) != (dot & 0xf0000))
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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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bfd_put_16 (abfd, gap, data + dst_address);
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printf (_("ignoring reloc %s\n"), reloc->howto->name);
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*src_ptr = src_address;
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*dst_ptr = dst_address;
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#define coff_reloc16_extra_cases w65_reloc16_extra_cases
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#define coff_reloc16_estimate w65_reloc16_estimate
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#include "coffcode.h"
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#undef coff_bfd_get_relocated_section_contents
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#undef coff_bfd_relax_section
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#define coff_bfd_get_relocated_section_contents \
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bfd_coff_reloc16_get_relocated_section_contents
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#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
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CREATE_LITTLE_COFF_TARGET_VEC (w65_vec, "coff-w65", BFD_IS_RELAXABLE, 0, '_', NULL)
added
removed
binutils/bfd/coff-w65.c
