Commit | Line | Data |
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252b5132 | 1 | /* BFD back-end for Zilog Z800n COFF binaries. |
9553c638 | 2 | Copyright 1992, 1993, 1994, 1995, 1997, 1999, 2000, 2001, 2002, 2003, |
c0524131 | 3 | 2004, 2005 Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by Cygnus Support. |
5 | Written by Steve Chamberlain, <sac@cygnus.com>. | |
6 | ||
c0524131 | 7 | This file is part of BFD, the Binary File Descriptor library. |
252b5132 | 8 | |
c0524131 NC |
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. | |
252b5132 | 13 | |
c0524131 NC |
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. | |
252b5132 | 18 | |
c0524131 NC |
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, MA 02110-1301, USA. */ | |
252b5132 RH |
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 | ||
31 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) | |
32 | ||
33 | static reloc_howto_type r_imm32 = | |
b34976b6 AM |
34 | HOWTO (R_IMM32, 0, 2, 32, FALSE, 0, |
35 | complain_overflow_bitfield, 0, "r_imm32", TRUE, 0xffffffff, | |
36 | 0xffffffff, FALSE); | |
252b5132 RH |
37 | |
38 | static reloc_howto_type r_imm4l = | |
b34976b6 AM |
39 | HOWTO (R_IMM4L, 0, 0, 4, FALSE, 0, |
40 | complain_overflow_bitfield, 0, "r_imm4l", TRUE, 0xf, 0xf, FALSE); | |
252b5132 RH |
41 | |
42 | static reloc_howto_type r_da = | |
b34976b6 AM |
43 | HOWTO (R_IMM16, 0, 1, 16, FALSE, 0, |
44 | complain_overflow_bitfield, 0, "r_da", TRUE, 0x0000ffff, 0x0000ffff, | |
45 | FALSE); | |
252b5132 RH |
46 | |
47 | static reloc_howto_type r_imm8 = | |
b34976b6 AM |
48 | HOWTO (R_IMM8, 0, 0, 8, FALSE, 0, |
49 | complain_overflow_bitfield, 0, "r_imm8", TRUE, 0x000000ff, 0x000000ff, | |
50 | FALSE); | |
252b5132 | 51 | |
6840198f | 52 | static reloc_howto_type r_rel16 = |
b34976b6 AM |
53 | HOWTO (R_REL16, 0, 1, 16, FALSE, 0, |
54 | complain_overflow_bitfield, 0, "r_rel16", TRUE, 0x0000ffff, 0x0000ffff, | |
55 | TRUE); | |
6840198f | 56 | |
252b5132 | 57 | static reloc_howto_type r_jr = |
c0524131 NC |
58 | HOWTO (R_JR, 1, 0, 8, TRUE, 0, complain_overflow_signed, 0, |
59 | "r_jr", TRUE, 0xff, 0xff, TRUE); | |
252b5132 | 60 | |
6840198f | 61 | static reloc_howto_type r_disp7 = |
b34976b6 | 62 | HOWTO (R_DISP7, 0, 0, 7, TRUE, 0, complain_overflow_bitfield, 0, |
c0524131 | 63 | "r_disp7", TRUE, 0x7f, 0x7f, TRUE); |
6840198f NC |
64 | |
65 | static reloc_howto_type r_callr = | |
c0524131 | 66 | HOWTO (R_CALLR, 1, 1, 12, TRUE, 0, complain_overflow_signed, 0, |
b34976b6 | 67 | "r_callr", TRUE, 0xfff, 0xfff, TRUE); |
6840198f | 68 | |
252b5132 | 69 | #define BADMAG(x) Z8KBADMAG(x) |
c0524131 | 70 | #define Z8K 1 /* Customize coffcode.h. */ |
252b5132 RH |
71 | #define __A_MAGIC_SET__ |
72 | ||
f4ffd778 | 73 | /* Code to swap in the reloc. */ |
dc810e39 AM |
74 | #define SWAP_IN_RELOC_OFFSET H_GET_32 |
75 | #define SWAP_OUT_RELOC_OFFSET H_PUT_32 | |
252b5132 RH |
76 | #define SWAP_OUT_RELOC_EXTRA(abfd, src, dst) \ |
77 | dst->r_stuff[0] = 'S'; \ | |
78 | dst->r_stuff[1] = 'C'; | |
79 | ||
f4ffd778 | 80 | /* Code to turn a r_type into a howto ptr, uses the above howto table. */ |
252b5132 RH |
81 | |
82 | static void | |
552585ed | 83 | rtype2howto (arelent *internal, struct internal_reloc *dst) |
252b5132 RH |
84 | { |
85 | switch (dst->r_type) | |
86 | { | |
87 | default: | |
88 | abort (); | |
89 | break; | |
90 | case R_IMM8: | |
91 | internal->howto = &r_imm8; | |
92 | break; | |
93 | case R_IMM16: | |
94 | internal->howto = &r_da; | |
95 | break; | |
96 | case R_JR: | |
97 | internal->howto = &r_jr; | |
98 | break; | |
6840198f NC |
99 | case R_DISP7: |
100 | internal->howto = &r_disp7; | |
101 | break; | |
102 | case R_CALLR: | |
103 | internal->howto = &r_callr; | |
104 | break; | |
105 | case R_REL16: | |
106 | internal->howto = &r_rel16; | |
107 | break; | |
252b5132 RH |
108 | case R_IMM32: |
109 | internal->howto = &r_imm32; | |
110 | break; | |
111 | case R_IMM4L: | |
112 | internal->howto = &r_imm4l; | |
113 | break; | |
114 | } | |
115 | } | |
116 | ||
f4ffd778 | 117 | #define RTYPE2HOWTO(internal, relocentry) rtype2howto (internal, relocentry) |
252b5132 | 118 | |
c0524131 NC |
119 | static reloc_howto_type * |
120 | coff_z8k_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, | |
121 | bfd_reloc_code_real_type code) | |
122 | { | |
123 | switch (code) | |
124 | { | |
125 | case BFD_RELOC_8: return & r_imm8; | |
126 | case BFD_RELOC_16: return & r_da; | |
127 | case BFD_RELOC_32: return & r_imm32; | |
128 | case BFD_RELOC_8_PCREL: return & r_jr; | |
129 | case BFD_RELOC_16_PCREL: return & r_rel16; | |
130 | case BFD_RELOC_Z8K_DISP7: return & r_disp7; | |
131 | case BFD_RELOC_Z8K_CALLR: return & r_callr; | |
132 | case BFD_RELOC_Z8K_IMM4L: return & r_imm4l; | |
133 | default: BFD_FAIL (); | |
134 | return 0; | |
135 | } | |
136 | } | |
137 | ||
f4ffd778 | 138 | /* Perform any necessary magic to the addend in a reloc entry. */ |
252b5132 | 139 | |
252b5132 RH |
140 | #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ |
141 | cache_ptr->addend = ext_reloc.r_offset; | |
142 | ||
252b5132 RH |
143 | #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ |
144 | reloc_processing(relent, reloc, symbols, abfd, section) | |
145 | ||
cbfe05c4 | 146 | static void |
552585ed CG |
147 | reloc_processing (arelent *relent, |
148 | struct internal_reloc *reloc, | |
149 | asymbol **symbols, | |
150 | bfd *abfd, | |
151 | asection *section) | |
252b5132 RH |
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 | |
552585ed CG |
166 | extra_case (bfd *in_abfd, |
167 | struct bfd_link_info *link_info, | |
168 | struct bfd_link_order *link_order, | |
169 | arelent *reloc, | |
170 | bfd_byte *data, | |
171 | unsigned int *src_ptr, | |
172 | unsigned int *dst_ptr) | |
252b5132 | 173 | { |
879db8be | 174 | asection * input_section = link_order->u.indirect.section; |
252b5132 RH |
175 | |
176 | switch (reloc->howto->type) | |
177 | { | |
178 | case R_IMM8: | |
179 | bfd_put_8 (in_abfd, | |
180 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
181 | data + *dst_ptr); | |
182 | (*dst_ptr) += 1; | |
183 | (*src_ptr) += 1; | |
184 | break; | |
185 | ||
186 | case R_IMM32: | |
3c25c5f6 NC |
187 | /* If no flags are set, assume immediate value. */ |
188 | if (! (*reloc->sym_ptr_ptr)->section->flags) | |
189 | { | |
190 | bfd_put_32 (in_abfd, | |
191 | bfd_coff_reloc16_get_value (reloc, link_info, | |
192 | input_section), | |
193 | data + *dst_ptr); | |
194 | } | |
195 | else | |
196 | { | |
197 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
198 | input_section); | |
5c4491d3 | 199 | /* Addresses are 23 bit, and the layout of those in a 32-bit |
3c25c5f6 NC |
200 | value is as follows: |
201 | 1AAAAAAA xxxxxxxx AAAAAAAA AAAAAAAA | |
202 | (A - address bits, x - ignore). */ | |
203 | dst = (dst & 0xffff) | ((dst & 0xff0000) << 8) | 0x80000000; | |
204 | bfd_put_32 (in_abfd, dst, data + *dst_ptr); | |
205 | } | |
252b5132 RH |
206 | (*dst_ptr) += 4; |
207 | (*src_ptr) += 4; | |
208 | break; | |
209 | ||
210 | case R_IMM4L: | |
211 | bfd_put_8 (in_abfd, | |
cbfe05c4 | 212 | ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0) |
252b5132 RH |
213 | | (0x0f |
214 | & bfd_coff_reloc16_get_value (reloc, link_info, | |
215 | input_section))), | |
216 | data + *dst_ptr); | |
217 | (*dst_ptr) += 1; | |
218 | (*src_ptr) += 1; | |
219 | break; | |
220 | ||
221 | case R_IMM16: | |
222 | bfd_put_16 (in_abfd, | |
223 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
224 | data + *dst_ptr); | |
225 | (*dst_ptr) += 2; | |
226 | (*src_ptr) += 2; | |
227 | break; | |
228 | ||
229 | case R_JR: | |
230 | { | |
231 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
232 | input_section); | |
44da2da1 AM |
233 | bfd_vma dot = (*dst_ptr |
234 | + input_section->output_offset | |
252b5132 | 235 | + input_section->output_section->vma); |
879db8be NC |
236 | int gap = dst - dot - 1; /* -1, since we're in the odd byte of the |
237 | word and the pc's been incremented. */ | |
252b5132 RH |
238 | |
239 | if (gap & 1) | |
240 | abort (); | |
241 | gap /= 2; | |
242 | if (gap > 128 || gap < -128) | |
243 | { | |
244 | if (! ((*link_info->callbacks->reloc_overflow) | |
dfeffb9f L |
245 | (link_info, NULL, |
246 | bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
252b5132 RH |
247 | reloc->howto->name, reloc->addend, input_section->owner, |
248 | input_section, reloc->address))) | |
249 | abort (); | |
250 | } | |
251 | bfd_put_8 (in_abfd, gap, data + *dst_ptr); | |
252 | (*dst_ptr)++; | |
253 | (*src_ptr)++; | |
254 | break; | |
255 | } | |
6840198f NC |
256 | |
257 | case R_DISP7: | |
258 | { | |
259 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
260 | input_section); | |
44da2da1 AM |
261 | bfd_vma dot = (*dst_ptr |
262 | + input_section->output_offset | |
6840198f | 263 | + input_section->output_section->vma); |
879db8be NC |
264 | int gap = dst - dot - 1; /* -1, since we're in the odd byte of the |
265 | word and the pc's been incremented. */ | |
6840198f NC |
266 | |
267 | if (gap & 1) | |
268 | abort (); | |
269 | gap /= 2; | |
270 | ||
8b7cf393 | 271 | if (gap > 0 || gap < -127) |
6840198f NC |
272 | { |
273 | if (! ((*link_info->callbacks->reloc_overflow) | |
dfeffb9f L |
274 | (link_info, NULL, |
275 | bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
6840198f NC |
276 | reloc->howto->name, reloc->addend, input_section->owner, |
277 | input_section, reloc->address))) | |
278 | abort (); | |
279 | } | |
280 | bfd_put_8 (in_abfd, | |
281 | (bfd_get_8 ( in_abfd, data + *dst_ptr) & 0x80) + (-gap & 0x7f), | |
282 | data + *dst_ptr); | |
283 | (*dst_ptr)++; | |
284 | (*src_ptr)++; | |
285 | break; | |
286 | } | |
287 | ||
288 | case R_CALLR: | |
289 | { | |
290 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
291 | input_section); | |
44da2da1 AM |
292 | bfd_vma dot = (*dst_ptr |
293 | + input_section->output_offset | |
6840198f NC |
294 | + input_section->output_section->vma); |
295 | int gap = dst - dot - 2; | |
296 | ||
297 | if (gap & 1) | |
298 | abort (); | |
8b7cf393 | 299 | if (gap > 4096 || gap < -4095) |
6840198f NC |
300 | { |
301 | if (! ((*link_info->callbacks->reloc_overflow) | |
dfeffb9f L |
302 | (link_info, NULL, |
303 | bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
6840198f NC |
304 | reloc->howto->name, reloc->addend, input_section->owner, |
305 | input_section, reloc->address))) | |
306 | abort (); | |
307 | } | |
8b7cf393 | 308 | gap /= 2; |
6840198f NC |
309 | bfd_put_16 (in_abfd, |
310 | (bfd_get_16 ( in_abfd, data + *dst_ptr) & 0xf000) | (-gap & 0x0fff), | |
311 | data + *dst_ptr); | |
312 | (*dst_ptr) += 2; | |
313 | (*src_ptr) += 2; | |
314 | break; | |
315 | } | |
316 | ||
317 | case R_REL16: | |
318 | { | |
319 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
320 | input_section); | |
44da2da1 AM |
321 | bfd_vma dot = (*dst_ptr |
322 | + input_section->output_offset | |
6840198f NC |
323 | + input_section->output_section->vma); |
324 | int gap = dst - dot - 2; | |
325 | ||
326 | if (gap > 32767 || gap < -32768) | |
327 | { | |
328 | if (! ((*link_info->callbacks->reloc_overflow) | |
dfeffb9f L |
329 | (link_info, NULL, |
330 | bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
6840198f NC |
331 | reloc->howto->name, reloc->addend, input_section->owner, |
332 | input_section, reloc->address))) | |
333 | abort (); | |
334 | } | |
dc810e39 | 335 | bfd_put_16 (in_abfd, (bfd_vma) gap, data + *dst_ptr); |
6840198f NC |
336 | (*dst_ptr) += 2; |
337 | (*src_ptr) += 2; | |
338 | break; | |
339 | } | |
879db8be | 340 | |
252b5132 RH |
341 | default: |
342 | abort (); | |
343 | } | |
344 | } | |
345 | ||
c0524131 NC |
346 | #define coff_reloc16_extra_cases extra_case |
347 | #define coff_bfd_reloc_type_lookup coff_z8k_reloc_type_lookup | |
252b5132 RH |
348 | |
349 | #include "coffcode.h" | |
350 | ||
252b5132 | 351 | #undef coff_bfd_get_relocated_section_contents |
252b5132 RH |
352 | #define coff_bfd_get_relocated_section_contents \ |
353 | bfd_coff_reloc16_get_relocated_section_contents | |
c0524131 NC |
354 | |
355 | #undef coff_bfd_relax_section | |
252b5132 RH |
356 | #define coff_bfd_relax_section bfd_coff_reloc16_relax_section |
357 | ||
3fa78519 | 358 | CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL, COFF_SWAP_TABLE) |