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44da2da10b
"output_offset" instead of link order "offset". * coff-h8500.c (extra_case): Likewise. * coff-w65.c (w65_reloc16_extra_cases): Likewise. * coff-z80.c (extra_case): Likewise. * coff-z8k.c (extra_case): Likewise. * linker.c (default_indirect_link_order): Likewise, "size" too. * ecoff.c (ecoff_indirect_link_order): Likewise.
245 lines
6.7 KiB
C
245 lines
6.7 KiB
C
/* BFD back-end for Zilog Z80 COFF binaries.
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Copyright 2005 Free Software Foundation, Inc.
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Contributed by Arnold Metselaar <arnold_m@operamail.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., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, 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 "bfdlink.h"
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#include "coff/z80.h"
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#include "coff/internal.h"
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#include "libcoff.h"
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#define COFF_DEFAULT_SECTION_ALIGNMENT_POWER 0
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static reloc_howto_type r_imm32 =
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HOWTO (R_IMM32, 0, 1, 32, FALSE, 0,
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complain_overflow_dont, 0, "r_imm32", TRUE, 0xffffffff, 0xffffffff,
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FALSE);
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static reloc_howto_type r_imm16 =
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HOWTO (R_IMM16, 0, 1, 16, FALSE, 0,
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complain_overflow_dont, 0, "r_imm16", TRUE, 0x0000ffff, 0x0000ffff,
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FALSE);
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static reloc_howto_type r_imm8 =
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HOWTO (R_IMM8, 0, 0, 8, FALSE, 0,
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complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff,
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FALSE);
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static reloc_howto_type r_jr =
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HOWTO (R_JR, 0, 0, 8, TRUE, 0,
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complain_overflow_signed, 0, "r_jr", FALSE, 0, 0xFF,
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FALSE);
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static reloc_howto_type r_off8 =
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HOWTO (R_OFF8, 0, 0, 8, FALSE, 0,
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complain_overflow_signed, 0,"r_off8", FALSE, 0, 0xff,
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FALSE);
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#define BADMAG(x) Z80BADMAG(x)
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#define Z80 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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/* Code to turn a r_type into a howto ptr, uses the above howto table. */
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static void
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rtype2howto (arelent *internal, struct internal_reloc *dst)
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{
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switch (dst->r_type)
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{
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default:
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abort ();
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break;
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case R_IMM8:
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internal->howto = &r_imm8;
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break;
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case R_IMM16:
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internal->howto = &r_imm16;
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break;
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case R_IMM32:
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internal->howto = &r_imm32;
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break;
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case R_JR:
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internal->howto = &r_jr;
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break;
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case R_OFF8:
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internal->howto = &r_off8;
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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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static reloc_howto_type *
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coff_z80_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
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bfd_reloc_code_real_type code)
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{
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switch (code)
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{
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case BFD_RELOC_8: return & r_imm8;
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case BFD_RELOC_16: return & r_imm16;
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case BFD_RELOC_32: return & r_imm32;
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case BFD_RELOC_8_PCREL: return & r_jr;
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case BFD_RELOC_Z80_DISP8: return & r_off8;
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default: BFD_FAIL ();
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return NULL;
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}
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}
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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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static void
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reloc_processing (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 (reloc->r_symndx > 0)
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relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
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else
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relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
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relent->addend = reloc->r_offset;
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relent->address -= section->vma;
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}
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static void
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extra_case (bfd *in_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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asection * input_section = link_order->u.indirect.section;
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int val;
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switch (reloc->howto->type)
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{
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case R_OFF8:
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val = bfd_coff_reloc16_get_value (reloc, link_info,
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input_section);
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if (val>127 || val<-128) /* Test for overflow. */
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{
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if (! ((*link_info->callbacks->reloc_overflow)
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(link_info, NULL,
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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 (in_abfd, val, data + *dst_ptr);
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(*dst_ptr) += 1;
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(*src_ptr) += 1;
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break;
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case R_IMM8:
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val = bfd_get_16 ( in_abfd, data+*src_ptr)
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+ bfd_coff_reloc16_get_value (reloc, link_info, input_section);
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bfd_put_8 (in_abfd, val, data + *dst_ptr);
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(*dst_ptr) += 1;
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(*src_ptr) += 1;
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break;
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case R_IMM16:
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val = bfd_get_16 ( in_abfd, data+*src_ptr)
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+ bfd_coff_reloc16_get_value (reloc, link_info, input_section);
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bfd_put_16 (in_abfd, val, data + *dst_ptr);
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(*dst_ptr) += 2;
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(*src_ptr) += 2;
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break;
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case R_IMM32:
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val = bfd_get_32 ( in_abfd, data+*src_ptr)
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+ bfd_coff_reloc16_get_value (reloc, link_info, input_section);
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bfd_put_32 (in_abfd, val, data + *dst_ptr);
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(*dst_ptr) += 4;
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(*src_ptr) += 4;
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break;
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case R_JR:
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{
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bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
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input_section);
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bfd_vma dot = (*dst_ptr
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+ input_section->output_offset
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+ input_section->output_section->vma);
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int gap = dst - dot - 1; /* -1, Since the offset is relative
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to the value of PC after reading
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the offset. */
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if (gap >= 128 || gap < -128)
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{
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if (! ((*link_info->callbacks->reloc_overflow)
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(link_info, NULL,
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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 (in_abfd, gap, data + *dst_ptr);
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(*dst_ptr)++;
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(*src_ptr)++;
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break;
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}
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default:
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abort ();
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}
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}
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#define coff_reloc16_extra_cases extra_case
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#define coff_bfd_reloc_type_lookup coff_z80_reloc_type_lookup
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#include "coffcode.h"
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#undef coff_bfd_get_relocated_section_contents
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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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#undef coff_bfd_relax_section
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#define coff_bfd_relax_section bfd_coff_reloc16_relax_section
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CREATE_LITTLE_COFF_TARGET_VEC (z80coff_vec, "coff-z80", 0, 0, '\0', NULL,
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COFF_SWAP_TABLE)
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