1 /* BFD back-end for Renesas H8/500 COFF binaries.
2 Copyright (C) 1993-2016 Free Software Foundation, Inc.
3 Contributed by Cygnus Support.
4 Written by Steve Chamberlain, <sac@cygnus.com>.
5
6 This file is part of BFD, the Binary File Descriptor library.
7
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 3 of the License, or
11 (at your option) any later version.
12
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.
17
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., 51 Franklin Street - Fifth Floor, Boston,
21 MA 02110-1301, USA. */
22
23 #include "sysdep.h"
24 #include "bfd.h"
25 #include "libbfd.h"
26 #include "bfdlink.h"
27 #include "coff/h8500.h"
28 #include "coff/internal.h"
29 #include "libcoff.h"
30
31
32 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
33
34 static reloc_howto_type r_imm8 =
35 HOWTO (R_H8500_IMM8, 0, 1, 8, FALSE, 0,
36 complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff, FALSE);
37
38 static reloc_howto_type r_imm16 =
39 HOWTO (R_H8500_IMM16, 0, 1, 16, FALSE, 0,
40 complain_overflow_bitfield, 0, "r_imm16", TRUE, 0x0000ffff, 0x0000ffff, FALSE);
41
42 static reloc_howto_type r_imm24 =
43 HOWTO (R_H8500_IMM24, 0, 1, 24, FALSE, 0,
44 complain_overflow_bitfield, 0, "r_imm24", TRUE, 0x00ffffff, 0x00ffffff, FALSE);
45
46 static reloc_howto_type r_imm32 =
47 HOWTO (R_H8500_IMM32, 0, 1, 32, FALSE, 0,
48 complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff, 0xffffffff, FALSE);
49
50 static reloc_howto_type r_high8 =
51 HOWTO (R_H8500_HIGH8, 0, 1, 8, FALSE, 0,
52 complain_overflow_dont, 0, "r_high8", TRUE, 0x000000ff, 0x000000ff, FALSE);
53
54 static reloc_howto_type r_low16 =
55 HOWTO (R_H8500_LOW16, 0, 1, 16, FALSE, 0,
56 complain_overflow_dont, 0, "r_low16", TRUE, 0x0000ffff, 0x0000ffff, FALSE);
57
58 static reloc_howto_type r_pcrel8 =
59 HOWTO (R_H8500_PCREL8, 0, 1, 8, TRUE, 0, complain_overflow_signed, 0, "r_pcrel8", TRUE, 0, 0, TRUE);
60
61 static reloc_howto_type r_pcrel16 =
62 HOWTO (R_H8500_PCREL16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "r_pcrel16", TRUE, 0, 0, TRUE);
63
64 static reloc_howto_type r_high16 =
65 HOWTO (R_H8500_HIGH16, 0, 1, 8, FALSE, 0,
66 complain_overflow_dont, 0, "r_high16", TRUE, 0x000ffff, 0x0000ffff, FALSE);
67
68 /* Turn a howto into a reloc number. */
69
70 static int
coff_h8500_select_reloc(reloc_howto_type * howto)71 coff_h8500_select_reloc (reloc_howto_type *howto)
72 {
73 return howto->type;
74 }
75
76 #define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)
77
78 #define BADMAG(x) H8500BADMAG(x)
79 #define H8500 1 /* Customize coffcode.h */
80
81 #define __A_MAGIC_SET__
82
83 /* Code to swap in the reloc. */
84 #define SWAP_IN_RELOC_OFFSET H_GET_32
85 #define SWAP_OUT_RELOC_OFFSET H_PUT_32
86 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
87 dst->r_stuff[0] = 'S'; \
88 dst->r_stuff[1] = 'C';
89
90 /* Code to turn a r_type into a howto ptr, uses the above howto table. */
91
92 static void
rtype2howto(arelent * internal,struct internal_reloc * dst)93 rtype2howto (arelent * internal, struct internal_reloc *dst)
94 {
95 switch (dst->r_type)
96 {
97 default:
98 internal->howto = NULL;
99 break;
100 case R_H8500_IMM8:
101 internal->howto = &r_imm8;
102 break;
103 case R_H8500_IMM16:
104 internal->howto = &r_imm16;
105 break;
106 case R_H8500_IMM24:
107 internal->howto = &r_imm24;
108 break;
109 case R_H8500_IMM32:
110 internal->howto = &r_imm32;
111 break;
112 case R_H8500_PCREL8:
113 internal->howto = &r_pcrel8;
114 break;
115 case R_H8500_PCREL16:
116 internal->howto = &r_pcrel16;
117 break;
118 case R_H8500_HIGH8:
119 internal->howto = &r_high8;
120 break;
121 case R_H8500_HIGH16:
122 internal->howto = &r_high16;
123 break;
124 case R_H8500_LOW16:
125 internal->howto = &r_low16;
126 break;
127 }
128 }
129
130 #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
131
132 /* Perform any necessary magic to the addend in a reloc entry. */
133
134 #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
135 cache_ptr->addend = ext_reloc.r_offset;
136
137 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
138 reloc_processing(relent, reloc, symbols, abfd, section)
139
140 static void
reloc_processing(arelent * relent,struct internal_reloc * reloc,asymbol ** symbols,bfd * abfd,asection * section)141 reloc_processing (arelent * relent,
142 struct internal_reloc *reloc,
143 asymbol ** symbols,
144 bfd * abfd,
145 asection * section)
146 {
147 relent->address = reloc->r_vaddr;
148 rtype2howto (relent, reloc);
149
150 if (reloc->r_symndx > 0)
151 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
152 else
153 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
154
155 relent->addend = reloc->r_offset;
156 relent->address -= section->vma;
157 }
158
159 static void
extra_case(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)160 extra_case (bfd *in_abfd,
161 struct bfd_link_info *link_info,
162 struct bfd_link_order *link_order,
163 arelent *reloc,
164 bfd_byte *data,
165 unsigned int *src_ptr,
166 unsigned int *dst_ptr)
167 {
168 bfd_byte *d = data+*dst_ptr;
169 asection *input_section = link_order->u.indirect.section;
170
171 switch (reloc->howto->type)
172 {
173 case R_H8500_IMM8:
174 bfd_put_8 (in_abfd,
175 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
176 d);
177 (*dst_ptr) += 1;
178 (*src_ptr) += 1;
179 break;
180
181 case R_H8500_HIGH8:
182 bfd_put_8 (in_abfd,
183 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
184 >> 16),
185 d);
186 (*dst_ptr) += 1;
187 (*src_ptr) += 1;
188 break;
189
190 case R_H8500_IMM16:
191 bfd_put_16 (in_abfd,
192 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
193 d);
194 (*dst_ptr) += 2;
195 (*src_ptr) += 2;
196 break;
197
198 case R_H8500_LOW16:
199 bfd_put_16 (in_abfd,
200 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
201 d);
202
203 (*dst_ptr) += 2;
204 (*src_ptr) += 2;
205 break;
206
207 case R_H8500_HIGH16:
208 bfd_put_16 (in_abfd,
209 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
210 >> 16),
211 d);
212
213 (*dst_ptr) += 2;
214 (*src_ptr) += 2;
215 break;
216
217 case R_H8500_IMM24:
218 {
219 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
220 int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1);
221 v = (v & 0x00ffffff) | (o & 0xff00000);
222 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr -1);
223 (*dst_ptr) += 3;
224 (*src_ptr) += 3;
225 }
226 break;
227 case R_H8500_IMM32:
228 {
229 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
230 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr);
231 (*dst_ptr) += 4;
232 (*src_ptr) += 4;
233 }
234 break;
235
236 case R_H8500_PCREL8:
237 {
238 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
239 input_section);
240 bfd_vma dot = (*dst_ptr
241 + input_section->output_offset
242 + input_section->output_section->vma);
243 int gap = dst - dot - 1; /* -1 since were in the odd byte of the
244 word and the pc's been incremented. */
245
246 if (gap > 128 || gap < -128)
247 (*link_info->callbacks->reloc_overflow)
248 (link_info, NULL, bfd_asymbol_name (*reloc->sym_ptr_ptr),
249 reloc->howto->name, reloc->addend, input_section->owner,
250 input_section, reloc->address);
251
252 bfd_put_8 (in_abfd, gap, data + *dst_ptr);
253 (*dst_ptr)++;
254 (*src_ptr)++;
255 break;
256 }
257 case R_H8500_PCREL16:
258 {
259 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
260 input_section);
261 bfd_vma dot = (*dst_ptr
262 + input_section->output_offset
263 + input_section->output_section->vma);
264 int gap = dst - dot - 1; /* -1 since were in the odd byte of the
265 word and the pc's been incremented. */
266
267 if (gap > 32767 || gap < -32768)
268 (*link_info->callbacks->reloc_overflow)
269 (link_info, NULL, bfd_asymbol_name (*reloc->sym_ptr_ptr),
270 reloc->howto->name, reloc->addend, input_section->owner,
271 input_section, reloc->address);
272
273 bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr);
274 (*dst_ptr) += 2;
275 (*src_ptr) += 2;
276 break;
277 }
278
279 default:
280 abort ();
281 }
282 }
283
284 #define coff_reloc16_extra_cases extra_case
285
286 #ifndef bfd_pe_print_pdata
287 #define bfd_pe_print_pdata NULL
288 #endif
289
290 #include "coffcode.h"
291
292 #undef coff_bfd_get_relocated_section_contents
293 #undef coff_bfd_relax_section
294 #define coff_bfd_get_relocated_section_contents \
295 bfd_coff_reloc16_get_relocated_section_contents
296 #define coff_bfd_relax_section bfd_coff_reloc16_relax_section
297
298 CREATE_BIG_COFF_TARGET_VEC (h8500_coff_vec, "coff-h8500", 0, 0, '_', NULL, COFF_SWAP_TABLE)
299