Commit | Line | Data |
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252b5132 | 1 | /* BFD back-end for Zilog Z800n COFF binaries. |
879db8be | 2 | Copyright 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001 |
7898deda | 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/z8k.h" | |
28 | #include "coff/internal.h" | |
29 | #include "libcoff.h" | |
30 | ||
f4ffd778 NC |
31 | static void extra_case PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_order *, arelent *, bfd_byte *, unsigned int *, unsigned int *)); |
32 | static void reloc_processing PARAMS ((arelent *, struct internal_reloc *, asymbol **, bfd *, asection *)); | |
33 | static void rtype2howto PARAMS ((arelent *, struct internal_reloc *)); | |
34 | static int coff_z8k_select_reloc PARAMS ((reloc_howto_type *)); | |
35 | ||
252b5132 RH |
36 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) |
37 | ||
38 | static reloc_howto_type r_imm32 = | |
879db8be | 39 | HOWTO (R_IMM32, 0, 2, 32, false, 0, |
252b5132 RH |
40 | complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, |
41 | 0xffffffff, false); | |
42 | ||
43 | static reloc_howto_type r_imm4l = | |
879db8be | 44 | HOWTO (R_IMM4L, 0, 0, 4, false, 0, |
252b5132 RH |
45 | complain_overflow_bitfield, 0, "r_imm4l", true, 0xf, 0xf, false); |
46 | ||
47 | static reloc_howto_type r_da = | |
48 | HOWTO (R_IMM16, 0, 1, 16, false, 0, | |
49 | complain_overflow_bitfield, 0, "r_da", true, 0x0000ffff, 0x0000ffff, | |
50 | false); | |
51 | ||
52 | static reloc_howto_type r_imm8 = | |
879db8be | 53 | HOWTO (R_IMM8, 0, 0, 8, false, 0, |
252b5132 RH |
54 | complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, |
55 | false); | |
56 | ||
6840198f NC |
57 | static reloc_howto_type r_rel16 = |
58 | HOWTO (R_REL16, 0, 1, 16, false, 0, | |
59 | complain_overflow_bitfield, 0, "r_rel16", true, 0x0000ffff, 0x0000ffff, | |
60 | true); | |
61 | ||
252b5132 | 62 | static reloc_howto_type r_jr = |
879db8be | 63 | HOWTO (R_JR, 0, 0, 8, true, 0, complain_overflow_signed, 0, |
252b5132 RH |
64 | "r_jr", true, 0, 0, true); |
65 | ||
6840198f | 66 | static reloc_howto_type r_disp7 = |
879db8be | 67 | HOWTO (R_DISP7, 0, 0, 7, true, 0, complain_overflow_bitfield, 0, |
6840198f NC |
68 | "r_disp7", true, 0, 0, true); |
69 | ||
70 | static reloc_howto_type r_callr = | |
71 | HOWTO (R_CALLR, 0, 1, 12, true, 0, complain_overflow_signed, 0, | |
72 | "r_callr", true, 0xfff, 0xfff, true); | |
73 | ||
252b5132 RH |
74 | /* Turn a howto into a reloc number */ |
75 | ||
cbfe05c4 | 76 | static int |
252b5132 RH |
77 | coff_z8k_select_reloc (howto) |
78 | reloc_howto_type *howto; | |
79 | { | |
80 | return howto->type; | |
81 | } | |
82 | ||
83 | #define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto) | |
84 | ||
252b5132 RH |
85 | #define BADMAG(x) Z8KBADMAG(x) |
86 | #define Z8K 1 /* Customize coffcode.h */ | |
87 | #define __A_MAGIC_SET__ | |
88 | ||
f4ffd778 | 89 | /* Code to swap in the reloc. */ |
dc810e39 AM |
90 | #define SWAP_IN_RELOC_OFFSET H_GET_32 |
91 | #define SWAP_OUT_RELOC_OFFSET H_PUT_32 | |
252b5132 RH |
92 | #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ |
93 | dst->r_stuff[0] = 'S'; \ | |
94 | dst->r_stuff[1] = 'C'; | |
95 | ||
f4ffd778 | 96 | /* Code to turn a r_type into a howto ptr, uses the above howto table. */ |
252b5132 RH |
97 | |
98 | static void | |
99 | rtype2howto (internal, dst) | |
100 | arelent * internal; | |
101 | struct internal_reloc *dst; | |
102 | { | |
103 | switch (dst->r_type) | |
104 | { | |
105 | default: | |
106 | abort (); | |
107 | break; | |
108 | case R_IMM8: | |
109 | internal->howto = &r_imm8; | |
110 | break; | |
111 | case R_IMM16: | |
112 | internal->howto = &r_da; | |
113 | break; | |
114 | case R_JR: | |
115 | internal->howto = &r_jr; | |
116 | break; | |
6840198f NC |
117 | case R_DISP7: |
118 | internal->howto = &r_disp7; | |
119 | break; | |
120 | case R_CALLR: | |
121 | internal->howto = &r_callr; | |
122 | break; | |
123 | case R_REL16: | |
124 | internal->howto = &r_rel16; | |
125 | break; | |
252b5132 RH |
126 | case R_IMM32: |
127 | internal->howto = &r_imm32; | |
128 | break; | |
129 | case R_IMM4L: | |
130 | internal->howto = &r_imm4l; | |
131 | break; | |
132 | } | |
133 | } | |
134 | ||
f4ffd778 | 135 | #define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry) |
252b5132 | 136 | |
f4ffd778 | 137 | /* Perform any necessary magic to the addend in a reloc entry. */ |
252b5132 | 138 | |
252b5132 RH |
139 | #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ |
140 | cache_ptr->addend = ext_reloc.r_offset; | |
141 | ||
252b5132 RH |
142 | #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ |
143 | reloc_processing(relent, reloc, symbols, abfd, section) | |
144 | ||
cbfe05c4 | 145 | static void |
252b5132 RH |
146 | reloc_processing (relent, reloc, symbols, abfd, section) |
147 | arelent * relent; | |
879db8be | 148 | struct internal_reloc * reloc; |
252b5132 RH |
149 | asymbol ** symbols; |
150 | bfd * abfd; | |
151 | asection * section; | |
152 | { | |
153 | relent->address = reloc->r_vaddr; | |
154 | rtype2howto (relent, reloc); | |
155 | ||
156 | if (reloc->r_symndx > 0) | |
879db8be | 157 | relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; |
252b5132 | 158 | else |
879db8be | 159 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
252b5132 | 160 | |
252b5132 RH |
161 | relent->addend = reloc->r_offset; |
162 | relent->address -= section->vma; | |
163 | } | |
164 | ||
165 | static void | |
166 | extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr) | |
879db8be NC |
167 | bfd * in_abfd; |
168 | struct bfd_link_info * link_info; | |
169 | struct bfd_link_order * link_order; | |
170 | arelent * reloc; | |
171 | bfd_byte * data; | |
172 | unsigned int * src_ptr; | |
173 | unsigned int * dst_ptr; | |
252b5132 | 174 | { |
879db8be | 175 | asection * input_section = link_order->u.indirect.section; |
252b5132 RH |
176 | |
177 | switch (reloc->howto->type) | |
178 | { | |
179 | case R_IMM8: | |
180 | bfd_put_8 (in_abfd, | |
181 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
182 | data + *dst_ptr); | |
183 | (*dst_ptr) += 1; | |
184 | (*src_ptr) += 1; | |
185 | break; | |
186 | ||
187 | case R_IMM32: | |
188 | bfd_put_32 (in_abfd, | |
879db8be NC |
189 | /* 0x80000000 indicates a long segmented address. */ |
190 | bfd_coff_reloc16_get_value (reloc, link_info, input_section) | 0x80000000, | |
252b5132 RH |
191 | data + *dst_ptr); |
192 | (*dst_ptr) += 4; | |
193 | (*src_ptr) += 4; | |
194 | break; | |
195 | ||
196 | case R_IMM4L: | |
197 | bfd_put_8 (in_abfd, | |
cbfe05c4 | 198 | ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0) |
252b5132 RH |
199 | | (0x0f |
200 | & bfd_coff_reloc16_get_value (reloc, link_info, | |
201 | input_section))), | |
202 | data + *dst_ptr); | |
203 | (*dst_ptr) += 1; | |
204 | (*src_ptr) += 1; | |
205 | break; | |
206 | ||
207 | case R_IMM16: | |
208 | bfd_put_16 (in_abfd, | |
209 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
210 | data + *dst_ptr); | |
211 | (*dst_ptr) += 2; | |
212 | (*src_ptr) += 2; | |
213 | break; | |
214 | ||
215 | case R_JR: | |
216 | { | |
217 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
218 | input_section); | |
219 | bfd_vma dot = (link_order->offset | |
220 | + *dst_ptr | |
221 | + input_section->output_section->vma); | |
879db8be NC |
222 | int gap = dst - dot - 1; /* -1, since we're in the odd byte of the |
223 | word and the pc's been incremented. */ | |
252b5132 RH |
224 | |
225 | if (gap & 1) | |
226 | abort (); | |
227 | gap /= 2; | |
228 | if (gap > 128 || gap < -128) | |
229 | { | |
230 | if (! ((*link_info->callbacks->reloc_overflow) | |
231 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
232 | reloc->howto->name, reloc->addend, input_section->owner, | |
233 | input_section, reloc->address))) | |
234 | abort (); | |
235 | } | |
236 | bfd_put_8 (in_abfd, gap, data + *dst_ptr); | |
237 | (*dst_ptr)++; | |
238 | (*src_ptr)++; | |
239 | break; | |
240 | } | |
6840198f NC |
241 | |
242 | case R_DISP7: | |
243 | { | |
244 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
245 | input_section); | |
246 | bfd_vma dot = (link_order->offset | |
247 | + *dst_ptr | |
248 | + input_section->output_section->vma); | |
879db8be NC |
249 | int gap = dst - dot - 1; /* -1, since we're in the odd byte of the |
250 | word and the pc's been incremented. */ | |
6840198f NC |
251 | |
252 | if (gap & 1) | |
253 | abort (); | |
254 | gap /= 2; | |
255 | ||
256 | if (gap > 0 || gap < -128) | |
257 | { | |
258 | if (! ((*link_info->callbacks->reloc_overflow) | |
259 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
260 | reloc->howto->name, reloc->addend, input_section->owner, | |
261 | input_section, reloc->address))) | |
262 | abort (); | |
263 | } | |
264 | bfd_put_8 (in_abfd, | |
265 | (bfd_get_8 ( in_abfd, data + *dst_ptr) & 0x80) + (-gap & 0x7f), | |
266 | data + *dst_ptr); | |
267 | (*dst_ptr)++; | |
268 | (*src_ptr)++; | |
269 | break; | |
270 | } | |
271 | ||
272 | case R_CALLR: | |
273 | { | |
274 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
275 | input_section); | |
276 | bfd_vma dot = (link_order->offset | |
277 | + *dst_ptr | |
278 | + input_section->output_section->vma); | |
279 | int gap = dst - dot - 2; | |
280 | ||
281 | if (gap & 1) | |
282 | abort (); | |
283 | gap /= 2; | |
284 | if (gap > 8191 || gap < -8192) | |
285 | { | |
286 | if (! ((*link_info->callbacks->reloc_overflow) | |
287 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
288 | reloc->howto->name, reloc->addend, input_section->owner, | |
289 | input_section, reloc->address))) | |
290 | abort (); | |
291 | } | |
292 | bfd_put_16 (in_abfd, | |
293 | (bfd_get_16 ( in_abfd, data + *dst_ptr) & 0xf000) | (-gap & 0x0fff), | |
294 | data + *dst_ptr); | |
295 | (*dst_ptr) += 2; | |
296 | (*src_ptr) += 2; | |
297 | break; | |
298 | } | |
299 | ||
300 | case R_REL16: | |
301 | { | |
302 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
303 | input_section); | |
304 | bfd_vma dot = (link_order->offset | |
305 | + *dst_ptr | |
306 | + input_section->output_section->vma); | |
307 | int gap = dst - dot - 2; | |
308 | ||
309 | if (gap > 32767 || gap < -32768) | |
310 | { | |
311 | if (! ((*link_info->callbacks->reloc_overflow) | |
312 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
313 | reloc->howto->name, reloc->addend, input_section->owner, | |
314 | input_section, reloc->address))) | |
315 | abort (); | |
316 | } | |
dc810e39 | 317 | bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr); |
6840198f NC |
318 | (*dst_ptr) += 2; |
319 | (*src_ptr) += 2; | |
320 | break; | |
321 | } | |
879db8be | 322 | |
252b5132 RH |
323 | default: |
324 | abort (); | |
325 | } | |
326 | } | |
327 | ||
328 | #define coff_reloc16_extra_cases extra_case | |
329 | ||
330 | #include "coffcode.h" | |
331 | ||
252b5132 RH |
332 | #undef coff_bfd_get_relocated_section_contents |
333 | #undef coff_bfd_relax_section | |
334 | #define coff_bfd_get_relocated_section_contents \ | |
335 | bfd_coff_reloc16_get_relocated_section_contents | |
336 | #define coff_bfd_relax_section bfd_coff_reloc16_relax_section | |
337 | ||
c3c89269 | 338 | CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL) |