1 /* BFD back-end for Hitachi H8/500 COFF binaries.
2 Copyright 1993, 1994, 1995, 1997, 1999, 2000, 2001
3 Free Software Foundation, Inc.
4 Contributed by Cygnus Support.
5 Written by Steve Chamberlain, <sac@cygnus.com>.
7 This file is part of BFD, the Binary File Descriptor library.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 2 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program; if not, write to the Free Software
21 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
27 #include "coff/h8500.h"
28 #include "coff/internal.h"
31 static int coff_h8500_select_reloc PARAMS ((reloc_howto_type *));
32 static void rtype2howto PARAMS ((arelent *, struct internal_reloc *));
33 static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *));
34 static void extra_case PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *, bfd_byte *, unsigned int *, unsigned int *));
36 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
38 static reloc_howto_type r_imm8 =
39 HOWTO (R_H8500_IMM8, 0, 1, 8, false, 0,
40 complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, false);
42 static reloc_howto_type r_imm16 =
43 HOWTO (R_H8500_IMM16, 0, 1, 16, false, 0,
44 complain_overflow_bitfield, 0, "r_imm16", true, 0x0000ffff, 0x0000ffff, false);
46 static reloc_howto_type r_imm24 =
47 HOWTO (R_H8500_IMM24, 0, 1, 24, false, 0,
48 complain_overflow_bitfield, 0, "r_imm24", true, 0x00ffffff, 0x00ffffff, false);
50 static reloc_howto_type r_imm32 =
51 HOWTO (R_H8500_IMM32, 0, 1, 32, false, 0,
52 complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, 0xffffffff, false);
54 static reloc_howto_type r_high8 =
55 HOWTO (R_H8500_HIGH8, 0, 1, 8, false, 0,
56 complain_overflow_dont, 0, "r_high8", true, 0x000000ff, 0x000000ff, false);
58 static reloc_howto_type r_low16 =
59 HOWTO (R_H8500_LOW16, 0, 1, 16, false, 0,
60 complain_overflow_dont, 0, "r_low16", true, 0x0000ffff, 0x0000ffff, false);
62 static reloc_howto_type r_pcrel8 =
63 HOWTO (R_H8500_PCREL8, 0, 1, 8, true, 0, complain_overflow_signed, 0, "r_pcrel8", true, 0, 0, true);
65 static reloc_howto_type r_pcrel16 =
66 HOWTO (R_H8500_PCREL16, 0, 1, 16, true, 0, complain_overflow_signed, 0, "r_pcrel16", true, 0, 0, true);
68 static reloc_howto_type r_high16 =
69 HOWTO (R_H8500_HIGH16, 0, 1, 8, false, 0,
70 complain_overflow_dont, 0, "r_high16", true, 0x000ffff, 0x0000ffff, false);
72 /* Turn a howto into a reloc number. */
75 coff_h8500_select_reloc (howto)
76 reloc_howto_type *howto;
81 #define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)
83 #define BADMAG(x) H8500BADMAG(x)
84 #define H8500 1 /* Customize coffcode.h */
86 #define __A_MAGIC_SET__
88 /* Code to swap in the reloc. */
89 #define SWAP_IN_RELOC_OFFSET bfd_h_get_32
90 #define SWAP_OUT_RELOC_OFFSET bfd_h_put_32
91 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
92 dst->r_stuff[0] = 'S'; \
93 dst->r_stuff[1] = 'C';
95 /* Code to turn a r_type into a howto ptr, uses the above howto table. */
98 rtype2howto (internal, dst)
100 struct internal_reloc *dst;
108 internal->howto = &r_imm8;
111 internal->howto = &r_imm16;
114 internal->howto = &r_imm24;
117 internal->howto = &r_imm32;
120 internal->howto = &r_pcrel8;
122 case R_H8500_PCREL16:
123 internal->howto = &r_pcrel16;
126 internal->howto = &r_high8;
129 internal->howto = &r_high16;
132 internal->howto = &r_low16;
137 #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
139 /* Perform any necessary magic to the addend in a reloc entry. */
141 #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
142 cache_ptr->addend = ext_reloc.r_offset;
144 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
145 reloc_processing(relent, reloc, symbols, abfd, section)
147 static void reloc_processing (relent, reloc, symbols, abfd, section)
149 struct internal_reloc *reloc;
154 relent->address = reloc->r_vaddr;
155 rtype2howto (relent, reloc);
157 if (reloc->r_symndx > 0)
158 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
160 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
162 relent->addend = reloc->r_offset;
163 relent->address -= section->vma;
167 extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr)
169 struct bfd_link_info *link_info;
170 struct bfd_link_order *link_order;
173 unsigned int *src_ptr;
174 unsigned int *dst_ptr;
176 bfd_byte *d = data+*dst_ptr;
177 asection *input_section = link_order->u.indirect.section;
179 switch (reloc->howto->type)
183 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
191 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
200 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
208 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
217 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
227 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
228 int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1);
229 v = (v & 0x00ffffff) | (o & 0xff00000);
230 bfd_put_32 (in_abfd, v, data + *dst_ptr -1);
237 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
238 bfd_put_32 (in_abfd, v, data + *dst_ptr);
246 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
248 bfd_vma dot = link_order->offset
250 + link_order->u.indirect.section->output_section->vma;
251 int gap = dst - dot - 1; /* -1 since were in the odd byte of the
252 word and the pc's been incremented. */
254 if (gap > 128 || gap < -128)
256 if (! ((*link_info->callbacks->reloc_overflow)
257 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
258 reloc->howto->name, reloc->addend, input_section->owner,
259 input_section, reloc->address)))
262 bfd_put_8 (in_abfd, gap, data + *dst_ptr);
267 case R_H8500_PCREL16:
269 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
271 bfd_vma dot = link_order->offset
273 + link_order->u.indirect.section->output_section->vma;
274 int gap = dst - dot - 1; /* -1 since were in the odd byte of the
275 word and the pc's been incremented. */
277 if (gap > 32767 || gap < -32768)
279 if (! ((*link_info->callbacks->reloc_overflow)
280 (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr),
281 reloc->howto->name, reloc->addend, input_section->owner,
282 input_section, reloc->address)))
285 bfd_put_16 (in_abfd, gap, data + *dst_ptr);
296 #define coff_reloc16_extra_cases extra_case
298 #include "coffcode.h"
300 #undef coff_bfd_get_relocated_section_contents
301 #undef coff_bfd_relax_section
302 #define coff_bfd_get_relocated_section_contents \
303 bfd_coff_reloc16_get_relocated_section_contents
304 #define coff_bfd_relax_section bfd_coff_reloc16_relax_section
306 CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL)