1 /* BFD back-end for Zilog Z800n COFF binaries.
2 Copyright 1992, 93, 94, 95, 1997 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
4 Written by Steve Chamberlain, <sac@cygnus.com>.
6 This file is part of BFD, the Binary File Descriptor library.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program; if not, write to the Free Software
20 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
27 #include "coff/internal.h"
30 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
32 static reloc_howto_type r_imm32 =
33 HOWTO (R_IMM32, 0, 1, 32, false, 0,
34 complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff,
37 static reloc_howto_type r_imm4l =
38 HOWTO (R_IMM4L, 0, 1, 4, false, 0,
39 complain_overflow_bitfield, 0, "r_imm4l", true, 0xf, 0xf, false);
41 static reloc_howto_type r_da =
42 HOWTO (R_IMM16, 0, 1, 16, false, 0,
43 complain_overflow_bitfield, 0, "r_da", true, 0x0000ffff, 0x0000ffff,
46 static reloc_howto_type r_imm8 =
47 HOWTO (R_IMM8, 0, 1, 8, false, 0,
48 complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff,
51 static reloc_howto_type r_jr =
52 HOWTO (R_JR, 0, 1, 8, true, 0, complain_overflow_signed, 0,
53 "r_jr", true, 0, 0, true);
55 /* Turn a howto into a reloc number */
58 coff_z8k_select_reloc (howto)
59 reloc_howto_type *howto;
64 #define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto)
66 #define BADMAG(x) Z8KBADMAG(x)
67 #define Z8K 1 /* Customize coffcode.h */
68 #define __A_MAGIC_SET__
70 /* Code to swap in the reloc */
71 #define SWAP_IN_RELOC_OFFSET bfd_h_get_32
72 #define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
73 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
74 dst->r_stuff[0] = 'S'; \
75 dst->r_stuff[1] = 'C';
77 /* Code to turn a r_type into a howto ptr, uses the above howto table
81 rtype2howto (internal, dst)
83 struct internal_reloc *dst;
91 internal->howto = &r_imm8;
94 internal->howto = &r_da;
97 internal->howto = &r_jr;
100 internal->howto = &r_imm32;
103 internal->howto = &r_imm4l;
108 #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
110 /* Perform any necessary magic to the addend in a reloc entry */
112 #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
113 cache_ptr->addend = ext_reloc.r_offset;
115 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
116 reloc_processing(relent, reloc, symbols, abfd, section)
119 reloc_processing (relent, reloc, symbols, abfd, section)
121 struct internal_reloc *reloc;
126 relent->address = reloc->r_vaddr;
127 rtype2howto (relent, reloc);
129 if (reloc->r_symndx > 0)
131 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
135 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
138 relent->addend = reloc->r_offset;
139 relent->address -= section->vma;
143 extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
145 struct bfd_link_info *link_info;
146 struct bfd_link_order *link_order;
149 unsigned int *src_ptr;
150 unsigned int *dst_ptr;
152 asection *input_section = link_order->u.indirect.section;
154 switch (reloc->howto->type)
158 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
166 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
174 ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0)
176 & bfd_coff_reloc16_get_value (reloc, link_info,
185 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
193 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
195 bfd_vma dot = (link_order->offset
197 + input_section->output_section->vma);
198 int gap = dst - dot - 1;/* -1 since were in the odd byte of the
199 word and the pc's been incremented */
204 if (gap > 128 || gap < -128)
206 if (! ((*link_info->callbacks->reloc_overflow)
207 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
208 reloc->howto->name, reloc->addend, input_section->owner,
209 input_section, reloc->address)))
212 bfd_put_8 (in_abfd, gap, data + *dst_ptr);
222 #define coff_reloc16_extra_cases extra_case
224 #include "coffcode.h"
226 #undef coff_bfd_get_relocated_section_contents
227 #undef coff_bfd_relax_section
228 #define coff_bfd_get_relocated_section_contents \
229 bfd_coff_reloc16_get_relocated_section_contents
230 #define coff_bfd_relax_section bfd_coff_reloc16_relax_section
232 CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL)