| /* BFD back-end for Zilog Z800n COFF binaries. |
| Copyright 1992, 93, 94, 95, 1997 Free Software Foundation, Inc. |
| Contributed by Cygnus Support. |
| Written by Steve Chamberlain, <sac@cygnus.com>. |
| |
| This file is part of BFD, the Binary File Descriptor library. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, write to the Free Software |
| Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "libbfd.h" |
| #include "bfdlink.h" |
| #include "coff/z8k.h" |
| #include "coff/internal.h" |
| #include "libcoff.h" |
| |
| #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) |
| |
| static reloc_howto_type r_imm32 = |
| HOWTO (R_IMM32, 0, 1, 32, false, 0, |
| complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, |
| 0xffffffff, false); |
| |
| static reloc_howto_type r_imm4l = |
| HOWTO (R_IMM4L, 0, 1, 4, false, 0, |
| complain_overflow_bitfield, 0, "r_imm4l", true, 0xf, 0xf, false); |
| |
| static reloc_howto_type r_da = |
| HOWTO (R_IMM16, 0, 1, 16, false, 0, |
| complain_overflow_bitfield, 0, "r_da", true, 0x0000ffff, 0x0000ffff, |
| false); |
| |
| static reloc_howto_type r_imm8 = |
| HOWTO (R_IMM8, 0, 1, 8, false, 0, |
| complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, |
| false); |
| |
| static reloc_howto_type r_jr = |
| HOWTO (R_JR, 0, 1, 8, true, 0, complain_overflow_signed, 0, |
| "r_jr", true, 0, 0, true); |
| |
| /* Turn a howto into a reloc number */ |
| |
| static int |
| coff_z8k_select_reloc (howto) |
| reloc_howto_type *howto; |
| { |
| return howto->type; |
| } |
| |
| #define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto) |
| |
| |
| #define BADMAG(x) Z8KBADMAG(x) |
| #define Z8K 1 /* Customize coffcode.h */ |
| #define __A_MAGIC_SET__ |
| |
| |
| |
| /* Code to swap in the reloc */ |
| #define SWAP_IN_RELOC_OFFSET bfd_h_get_32 |
| #define SWAP_OUT_RELOC_OFFSET bfd_h_put_32 |
| #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ |
| dst->r_stuff[0] = 'S'; \ |
| dst->r_stuff[1] = 'C'; |
| |
| /* Code to turn a r_type into a howto ptr, uses the above howto table |
| */ |
| |
| static void |
| rtype2howto (internal, dst) |
| arelent * internal; |
| struct internal_reloc *dst; |
| { |
| switch (dst->r_type) |
| { |
| default: |
| abort (); |
| break; |
| case R_IMM8: |
| internal->howto = &r_imm8; |
| break; |
| case R_IMM16: |
| internal->howto = &r_da; |
| break; |
| case R_JR: |
| internal->howto = &r_jr; |
| break; |
| case R_IMM32: |
| internal->howto = &r_imm32; |
| break; |
| case R_IMM4L: |
| internal->howto = &r_imm4l; |
| break; |
| } |
| } |
| |
| #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) |
| |
| |
| /* Perform any necessary magic to the addend in a reloc entry */ |
| |
| |
| #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ |
| cache_ptr->addend = ext_reloc.r_offset; |
| |
| |
| #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ |
| reloc_processing(relent, reloc, symbols, abfd, section) |
| |
| static void |
| reloc_processing (relent, reloc, symbols, abfd, section) |
| arelent * relent; |
| struct internal_reloc *reloc; |
| asymbol ** symbols; |
| bfd * abfd; |
| asection * section; |
| { |
| relent->address = reloc->r_vaddr; |
| rtype2howto (relent, reloc); |
| |
| if (reloc->r_symndx > 0) |
| { |
| relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; |
| } |
| else |
| { |
| relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| } |
| |
| |
| relent->addend = reloc->r_offset; |
| relent->address -= section->vma; |
| } |
| |
| static void |
| extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr) |
| bfd *in_abfd; |
| struct bfd_link_info *link_info; |
| struct bfd_link_order *link_order; |
| arelent *reloc; |
| bfd_byte *data; |
| unsigned int *src_ptr; |
| unsigned int *dst_ptr; |
| { |
| asection *input_section = link_order->u.indirect.section; |
| |
| switch (reloc->howto->type) |
| { |
| case R_IMM8: |
| bfd_put_8 (in_abfd, |
| bfd_coff_reloc16_get_value (reloc, link_info, input_section), |
| data + *dst_ptr); |
| (*dst_ptr) += 1; |
| (*src_ptr) += 1; |
| break; |
| |
| case R_IMM32: |
| bfd_put_32 (in_abfd, |
| bfd_coff_reloc16_get_value (reloc, link_info, input_section), |
| data + *dst_ptr); |
| (*dst_ptr) += 4; |
| (*src_ptr) += 4; |
| break; |
| |
| case R_IMM4L: |
| bfd_put_8 (in_abfd, |
| ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0) |
| | (0x0f |
| & bfd_coff_reloc16_get_value (reloc, link_info, |
| input_section))), |
| data + *dst_ptr); |
| (*dst_ptr) += 1; |
| (*src_ptr) += 1; |
| break; |
| |
| case R_IMM16: |
| bfd_put_16 (in_abfd, |
| bfd_coff_reloc16_get_value (reloc, link_info, input_section), |
| data + *dst_ptr); |
| (*dst_ptr) += 2; |
| (*src_ptr) += 2; |
| break; |
| |
| case R_JR: |
| { |
| bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, |
| input_section); |
| bfd_vma dot = (link_order->offset |
| + *dst_ptr |
| + input_section->output_section->vma); |
| int gap = dst - dot - 1;/* -1 since were in the odd byte of the |
| word and the pc's been incremented */ |
| |
| if (gap & 1) |
| abort (); |
| gap /= 2; |
| if (gap > 128 || gap < -128) |
| { |
| if (! ((*link_info->callbacks->reloc_overflow) |
| (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), |
| reloc->howto->name, reloc->addend, input_section->owner, |
| input_section, reloc->address))) |
| abort (); |
| } |
| bfd_put_8 (in_abfd, gap, data + *dst_ptr); |
| (*dst_ptr)++; |
| (*src_ptr)++; |
| break; |
| } |
| default: |
| abort (); |
| } |
| } |
| |
| #define coff_reloc16_extra_cases extra_case |
| |
| #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 |
| |
| CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL) |