1 /* BFD back-end for Renesas H8/500 COFF binaries.
2 Copyright 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002, 2003, 2004,
3 2005, 2007, 2008, 2012 Free Software Foundation, Inc.
4 Contributed by Cygnus Support.
5 Written by Steve Chamberlain, <sac@cygnus.com>.
6
7 This file is part of BFD, the Binary File Descriptor library.
8
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 3 of the License, or
12 (at your option) any later version.
13
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.
18
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., 51 Franklin Street - Fifth Floor, Boston,
22 MA 02110-1301, USA. */
23
24 #include "sysdep.h"
25 #include "bfd.h"
26 #include "libbfd.h"
27 #include "bfdlink.h"
28 #include "coff/h8500.h"
29 #include "coff/internal.h"
30 #include "libcoff.h"
31
32
33 #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1)
34
35 static reloc_howto_type r_imm8 =
36 HOWTO (R_H8500_IMM8, 0, 1, 8, FALSE, 0,
37 complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff, FALSE);
38
39 static reloc_howto_type r_imm16 =
40 HOWTO (R_H8500_IMM16, 0, 1, 16, FALSE, 0,
41 complain_overflow_bitfield, 0, "r_imm16", TRUE, 0x0000ffff, 0x0000ffff, FALSE);
42
43 static reloc_howto_type r_imm24 =
44 HOWTO (R_H8500_IMM24, 0, 1, 24, FALSE, 0,
45 complain_overflow_bitfield, 0, "r_imm24", TRUE, 0x00ffffff, 0x00ffffff, FALSE);
46
47 static reloc_howto_type r_imm32 =
48 HOWTO (R_H8500_IMM32, 0, 1, 32, FALSE, 0,
49 complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff, 0xffffffff, FALSE);
50
51 static reloc_howto_type r_high8 =
52 HOWTO (R_H8500_HIGH8, 0, 1, 8, FALSE, 0,
53 complain_overflow_dont, 0, "r_high8", TRUE, 0x000000ff, 0x000000ff, FALSE);
54
55 static reloc_howto_type r_low16 =
56 HOWTO (R_H8500_LOW16, 0, 1, 16, FALSE, 0,
57 complain_overflow_dont, 0, "r_low16", TRUE, 0x0000ffff, 0x0000ffff, FALSE);
58
59 static reloc_howto_type r_pcrel8 =
60 HOWTO (R_H8500_PCREL8, 0, 1, 8, TRUE, 0, complain_overflow_signed, 0, "r_pcrel8", TRUE, 0, 0, TRUE);
61
62 static reloc_howto_type r_pcrel16 =
63 HOWTO (R_H8500_PCREL16, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0, "r_pcrel16", TRUE, 0, 0, TRUE);
64
65 static reloc_howto_type r_high16 =
66 HOWTO (R_H8500_HIGH16, 0, 1, 8, FALSE, 0,
67 complain_overflow_dont, 0, "r_high16", TRUE, 0x000ffff, 0x0000ffff, FALSE);
68
69 /* Turn a howto into a reloc number. */
70
71 static int
coff_h8500_select_reloc(reloc_howto_type * howto)72 coff_h8500_select_reloc (reloc_howto_type *howto)
73 {
74 return howto->type;
75 }
76
77 #define SELECT_RELOC(x,howto) x.r_type = coff_h8500_select_reloc(howto)
78
79 #define BADMAG(x) H8500BADMAG(x)
80 #define H8500 1 /* Customize coffcode.h */
81
82 #define __A_MAGIC_SET__
83
84 /* Code to swap in the reloc. */
85 #define SWAP_IN_RELOC_OFFSET H_GET_32
86 #define SWAP_OUT_RELOC_OFFSET H_PUT_32
87 #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \
88 dst->r_stuff[0] = 'S'; \
89 dst->r_stuff[1] = 'C';
90
91 /* Code to turn a r_type into a howto ptr, uses the above howto table. */
92
93 static void
rtype2howto(arelent * internal,struct internal_reloc * dst)94 rtype2howto (arelent * internal, struct internal_reloc *dst)
95 {
96 switch (dst->r_type)
97 {
98 default:
99 abort ();
100 break;
101 case R_H8500_IMM8:
102 internal->howto = &r_imm8;
103 break;
104 case R_H8500_IMM16:
105 internal->howto = &r_imm16;
106 break;
107 case R_H8500_IMM24:
108 internal->howto = &r_imm24;
109 break;
110 case R_H8500_IMM32:
111 internal->howto = &r_imm32;
112 break;
113 case R_H8500_PCREL8:
114 internal->howto = &r_pcrel8;
115 break;
116 case R_H8500_PCREL16:
117 internal->howto = &r_pcrel16;
118 break;
119 case R_H8500_HIGH8:
120 internal->howto = &r_high8;
121 break;
122 case R_H8500_HIGH16:
123 internal->howto = &r_high16;
124 break;
125 case R_H8500_LOW16:
126 internal->howto = &r_low16;
127 break;
128 }
129 }
130
131 #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry)
132
133 /* Perform any necessary magic to the addend in a reloc entry. */
134
135 #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \
136 cache_ptr->addend = ext_reloc.r_offset;
137
138 #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \
139 reloc_processing(relent, reloc, symbols, abfd, section)
140
141 static void
reloc_processing(arelent * relent,struct internal_reloc * reloc,asymbol ** symbols,bfd * abfd,asection * section)142 reloc_processing (arelent * relent,
143 struct internal_reloc *reloc,
144 asymbol ** symbols,
145 bfd * abfd,
146 asection * section)
147 {
148 relent->address = reloc->r_vaddr;
149 rtype2howto (relent, reloc);
150
151 if (reloc->r_symndx > 0)
152 relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx];
153 else
154 relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
155
156 relent->addend = reloc->r_offset;
157 relent->address -= section->vma;
158 }
159
160 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)161 extra_case (bfd *in_abfd,
162 struct bfd_link_info *link_info,
163 struct bfd_link_order *link_order,
164 arelent *reloc,
165 bfd_byte *data,
166 unsigned int *src_ptr,
167 unsigned int *dst_ptr)
168 {
169 bfd_byte *d = data+*dst_ptr;
170 asection *input_section = link_order->u.indirect.section;
171
172 switch (reloc->howto->type)
173 {
174 case R_H8500_IMM8:
175 bfd_put_8 (in_abfd,
176 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
177 d);
178 (*dst_ptr) += 1;
179 (*src_ptr) += 1;
180 break;
181
182 case R_H8500_HIGH8:
183 bfd_put_8 (in_abfd,
184 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
185 >> 16),
186 d);
187 (*dst_ptr) += 1;
188 (*src_ptr) += 1;
189 break;
190
191 case R_H8500_IMM16:
192 bfd_put_16 (in_abfd,
193 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
194 d);
195 (*dst_ptr) += 2;
196 (*src_ptr) += 2;
197 break;
198
199 case R_H8500_LOW16:
200 bfd_put_16 (in_abfd,
201 bfd_coff_reloc16_get_value (reloc, link_info, input_section),
202 d);
203
204 (*dst_ptr) += 2;
205 (*src_ptr) += 2;
206 break;
207
208 case R_H8500_HIGH16:
209 bfd_put_16 (in_abfd,
210 (bfd_coff_reloc16_get_value (reloc, link_info, input_section)
211 >> 16),
212 d);
213
214 (*dst_ptr) += 2;
215 (*src_ptr) += 2;
216 break;
217
218 case R_H8500_IMM24:
219 {
220 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
221 int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1);
222 v = (v & 0x00ffffff) | (o & 0xff00000);
223 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr -1);
224 (*dst_ptr) += 3;
225 (*src_ptr) += 3;
226 }
227 break;
228 case R_H8500_IMM32:
229 {
230 int v = bfd_coff_reloc16_get_value (reloc, link_info, input_section);
231 bfd_put_32 (in_abfd, (bfd_vma) v, data + *dst_ptr);
232 (*dst_ptr) += 4;
233 (*src_ptr) += 4;
234 }
235 break;
236
237 case R_H8500_PCREL8:
238 {
239 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
240 input_section);
241 bfd_vma dot = (*dst_ptr
242 + input_section->output_offset
243 + input_section->output_section->vma);
244 int gap = dst - dot - 1; /* -1 since were in the odd byte of the
245 word and the pc's been incremented. */
246
247 if (gap > 128 || gap < -128)
248 {
249 if (! ((*link_info->callbacks->reloc_overflow)
250 (link_info, NULL,
251 bfd_asymbol_name (*reloc->sym_ptr_ptr),
252 reloc->howto->name, reloc->addend, input_section->owner,
253 input_section, reloc->address)))
254 abort ();
255 }
256 bfd_put_8 (in_abfd, gap, data + *dst_ptr);
257 (*dst_ptr)++;
258 (*src_ptr)++;
259 break;
260 }
261 case R_H8500_PCREL16:
262 {
263 bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info,
264 input_section);
265 bfd_vma dot = (*dst_ptr
266 + input_section->output_offset
267 + input_section->output_section->vma);
268 int gap = dst - dot - 1; /* -1 since were in the odd byte of the
269 word and the pc's been incremented. */
270
271 if (gap > 32767 || gap < -32768)
272 {
273 if (! ((*link_info->callbacks->reloc_overflow)
274 (link_info, NULL,
275 bfd_asymbol_name (*reloc->sym_ptr_ptr),
276 reloc->howto->name, reloc->addend, input_section->owner,
277 input_section, reloc->address)))
278 abort ();
279 }
280 bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr);
281 (*dst_ptr) += 2;
282 (*src_ptr) += 2;
283 break;
284 }
285
286 default:
287 abort ();
288 }
289 }
290
291 #define coff_reloc16_extra_cases extra_case
292
293 #ifndef bfd_pe_print_pdata
294 #define bfd_pe_print_pdata NULL
295 #endif
296
297 #include "coffcode.h"
298
299 #undef coff_bfd_get_relocated_section_contents
300 #undef coff_bfd_relax_section
301 #define coff_bfd_get_relocated_section_contents \
302 bfd_coff_reloc16_get_relocated_section_contents
303 #define coff_bfd_relax_section bfd_coff_reloc16_relax_section
304
305 CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL, COFF_SWAP_TABLE)
306