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252b5132 | 1 | /* BFD back-end for Hitachi H8/500 COFF binaries. |
7898deda NC |
2 | Copyright 1993, 1994, 1995, 1997, 1999, 2000 |
3 | Free Software Foundation, Inc. | |
252b5132 RH |
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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
22 | ||
23 | #include "bfd.h" | |
24 | #include "sysdep.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 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) | |
32 | ||
33 | static reloc_howto_type r_imm8 = | |
34 | HOWTO (R_H8500_IMM8, 0, 1, 8, false, 0, | |
35 | complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, false); | |
36 | ||
37 | static reloc_howto_type r_imm16 = | |
38 | HOWTO (R_H8500_IMM16, 0, 1, 16, false, 0, | |
39 | complain_overflow_bitfield, 0, "r_imm16", true, 0x0000ffff, 0x0000ffff, false); | |
40 | ||
41 | static reloc_howto_type r_imm24 = | |
42 | HOWTO (R_H8500_IMM24, 0, 1, 24, false, 0, | |
43 | complain_overflow_bitfield, 0, "r_imm24", true, 0x00ffffff, 0x00ffffff, false); | |
44 | ||
45 | static reloc_howto_type r_imm32 = | |
46 | HOWTO (R_H8500_IMM32, 0, 1, 32, false, 0, | |
47 | complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, 0xffffffff, false); | |
48 | ||
252b5132 RH |
49 | static reloc_howto_type r_high8 = |
50 | HOWTO (R_H8500_HIGH8, 0, 1, 8, false, 0, | |
51 | complain_overflow_dont, 0, "r_high8", true, 0x000000ff, 0x000000ff, false); | |
52 | ||
53 | static reloc_howto_type r_low16 = | |
54 | HOWTO (R_H8500_LOW16, 0, 1, 16, false, 0, | |
55 | complain_overflow_dont, 0, "r_low16", true, 0x0000ffff, 0x0000ffff, false); | |
56 | ||
57 | static reloc_howto_type r_pcrel8 = | |
58 | HOWTO (R_H8500_PCREL8, 0, 1, 8, true, 0, complain_overflow_signed, 0, "r_pcrel8", true, 0, 0, true); | |
59 | ||
252b5132 RH |
60 | static reloc_howto_type r_pcrel16 = |
61 | HOWTO (R_H8500_PCREL16, 0, 1, 16, true, 0, complain_overflow_signed, 0, "r_pcrel16", true, 0, 0, true); | |
62 | ||
63 | static reloc_howto_type r_high16 = | |
64 | HOWTO (R_H8500_HIGH16, 0, 1, 8, false, 0, | |
65 | complain_overflow_dont, 0, "r_high16", true, 0x000ffff, 0x0000ffff, false); | |
66 | ||
252b5132 RH |
67 | /* Turn a howto into a reloc number */ |
68 | ||
5fcfd273 | 69 | static int |
252b5132 RH |
70 | coff_h8500_select_reloc (howto) |
71 | 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 | ||
252b5132 RH |
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 bfd_h_get_32 | |
85 | #define SWAP_OUT_RELOC_OFFSET bfd_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 | ||
93 | static void | |
94 | rtype2howto(internal, dst) | |
95 | arelent * internal; | |
96 | struct internal_reloc *dst; | |
97 | { | |
98 | switch (dst->r_type) | |
99 | { | |
100 | default: | |
101 | abort (); | |
102 | break; | |
103 | case R_H8500_IMM8: | |
104 | internal->howto = &r_imm8; | |
105 | break; | |
106 | case R_H8500_IMM16: | |
107 | internal->howto = &r_imm16; | |
108 | break; | |
109 | case R_H8500_IMM24: | |
110 | internal->howto = &r_imm24; | |
111 | break; | |
112 | case R_H8500_IMM32: | |
113 | internal->howto = &r_imm32; | |
114 | break; | |
115 | case R_H8500_PCREL8: | |
116 | internal->howto = &r_pcrel8; | |
117 | break; | |
118 | case R_H8500_PCREL16: | |
119 | internal->howto = &r_pcrel16; | |
120 | break; | |
121 | case R_H8500_HIGH8: | |
122 | internal->howto = &r_high8; | |
123 | break; | |
124 | case R_H8500_HIGH16: | |
125 | internal->howto = &r_high16; | |
126 | break; | |
127 | case R_H8500_LOW16: | |
128 | internal->howto = &r_low16; | |
129 | break; | |
130 | } | |
131 | } | |
132 | ||
133 | #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) | |
134 | ||
252b5132 RH |
135 | /* Perform any necessary magic to the addend in a reloc entry */ |
136 | ||
252b5132 RH |
137 | #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ |
138 | cache_ptr->addend = ext_reloc.r_offset; | |
139 | ||
252b5132 RH |
140 | #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ |
141 | reloc_processing(relent, reloc, symbols, abfd, section) | |
142 | ||
143 | static void reloc_processing (relent, reloc, symbols, abfd, section) | |
144 | arelent * relent; | |
145 | struct internal_reloc *reloc; | |
146 | asymbol ** symbols; | |
147 | bfd * abfd; | |
148 | asection * section; | |
149 | { | |
150 | relent->address = reloc->r_vaddr; | |
151 | rtype2howto (relent, reloc); | |
152 | ||
153 | if (reloc->r_symndx > 0) | |
154 | { | |
155 | relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; | |
156 | } | |
157 | else | |
158 | { | |
159 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; | |
160 | } | |
161 | ||
252b5132 RH |
162 | relent->addend = reloc->r_offset; |
163 | relent->address -= section->vma; | |
164 | } | |
165 | ||
166 | static void | |
167 | extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr) | |
168 | bfd *in_abfd; | |
169 | struct bfd_link_info *link_info; | |
170 | struct bfd_link_order *link_order; | |
171 | arelent *reloc; | |
172 | bfd_byte *data; | |
173 | unsigned int *src_ptr; | |
174 | unsigned int *dst_ptr; | |
175 | { | |
176 | bfd_byte *d = data+*dst_ptr; | |
177 | asection *input_section = link_order->u.indirect.section; | |
178 | switch (reloc->howto->type) | |
179 | { | |
180 | case R_H8500_IMM8: | |
181 | bfd_put_8 (in_abfd, | |
182 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
183 | d); | |
184 | (*dst_ptr) += 1; | |
185 | (*src_ptr) += 1; | |
186 | break; | |
187 | ||
188 | case R_H8500_HIGH8: | |
189 | bfd_put_8 (in_abfd, | |
190 | (bfd_coff_reloc16_get_value (reloc, link_info, input_section) | |
191 | >> 16), | |
192 | d ); | |
193 | (*dst_ptr) += 1; | |
194 | (*src_ptr) += 1; | |
195 | break; | |
196 | ||
197 | case R_H8500_IMM16: | |
198 | bfd_put_16 (in_abfd, | |
199 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
200 | d ); | |
201 | (*dst_ptr) += 2; | |
202 | (*src_ptr) += 2; | |
203 | break; | |
204 | ||
205 | case R_H8500_LOW16: | |
206 | bfd_put_16 (in_abfd, | |
207 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
208 | d); | |
209 | ||
210 | (*dst_ptr) += 2; | |
211 | (*src_ptr) += 2; | |
212 | break; | |
5fcfd273 | 213 | |
252b5132 RH |
214 | case R_H8500_HIGH16: |
215 | bfd_put_16 (in_abfd, | |
216 | (bfd_coff_reloc16_get_value (reloc, link_info, input_section) | |
217 | >>16), | |
218 | d); | |
219 | ||
220 | (*dst_ptr) += 2; | |
221 | (*src_ptr) += 2; | |
222 | break; | |
223 | ||
224 | case R_H8500_IMM24: | |
225 | { | |
226 | int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section); | |
6e301b2b | 227 | int o = bfd_get_32 (in_abfd, data+ *dst_ptr -1); |
252b5132 RH |
228 | v = (v & 0x00ffffff) | (o & 0xff00000); |
229 | bfd_put_32 (in_abfd, v, data + *dst_ptr -1); | |
230 | (*dst_ptr) +=3; | |
231 | (*src_ptr)+=3;; | |
232 | } | |
233 | break; | |
234 | case R_H8500_IMM32: | |
235 | { | |
236 | int v = bfd_coff_reloc16_get_value(reloc, link_info, input_section); | |
237 | bfd_put_32 (in_abfd, v, data + *dst_ptr); | |
238 | (*dst_ptr) +=4; | |
239 | (*src_ptr)+=4;; | |
240 | } | |
241 | break; | |
242 | ||
252b5132 RH |
243 | case R_H8500_PCREL8: |
244 | { | |
245 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
246 | input_section); | |
247 | bfd_vma dot = link_order->offset | |
248 | + *dst_ptr | |
249 | + link_order->u.indirect.section->output_section->vma; | |
250 | int gap = dst - dot - 1; /* -1 since were in the odd byte of the | |
251 | word and the pc's been incremented */ | |
252 | ||
253 | if (gap > 128 || gap < -128) | |
254 | { | |
255 | if (! ((*link_info->callbacks->reloc_overflow) | |
256 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
257 | reloc->howto->name, reloc->addend, input_section->owner, | |
258 | input_section, reloc->address))) | |
259 | abort (); | |
260 | } | |
261 | bfd_put_8 (in_abfd, gap, data + *dst_ptr); | |
262 | (*dst_ptr)++; | |
263 | (*src_ptr)++; | |
264 | break; | |
265 | } | |
266 | case R_H8500_PCREL16: | |
267 | { | |
268 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
269 | input_section); | |
270 | bfd_vma dot = link_order->offset | |
271 | + *dst_ptr | |
272 | + link_order->u.indirect.section->output_section->vma; | |
273 | int gap = dst - dot - 1; /* -1 since were in the odd byte of the | |
274 | word and the pc's been incremented */ | |
275 | ||
276 | if (gap > 32767 || gap < -32768) | |
277 | { | |
278 | if (! ((*link_info->callbacks->reloc_overflow) | |
279 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
280 | reloc->howto->name, reloc->addend, input_section->owner, | |
281 | input_section, reloc->address))) | |
282 | abort (); | |
283 | } | |
284 | bfd_put_16 (in_abfd, gap, data + *dst_ptr); | |
285 | (*dst_ptr)+=2; | |
286 | (*src_ptr)+=2; | |
287 | break; | |
288 | } | |
289 | ||
290 | default: | |
291 | abort (); | |
292 | } | |
293 | } | |
294 | ||
295 | #define coff_reloc16_extra_cases extra_case | |
296 | ||
297 | #include "coffcode.h" | |
298 | ||
252b5132 RH |
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 | ||
c3c89269 | 305 | CREATE_BIG_COFF_TARGET_VEC (h8500coff_vec, "coff-h8500", 0, 0, '_', NULL) |