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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, <[email protected]>. | |
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 | ||
31 | #define COFF_DEFAULT_SECTION_ALIGNMENT_POWER (1) | |
32 | ||
33 | static reloc_howto_type r_imm32 = | |
879db8be | 34 | HOWTO (R_IMM32, 0, 2, 32, false, 0, |
252b5132 RH |
35 | complain_overflow_bitfield, 0, "r_imm32", true, 0xffffffff, |
36 | 0xffffffff, false); | |
37 | ||
38 | static reloc_howto_type r_imm4l = | |
879db8be | 39 | HOWTO (R_IMM4L, 0, 0, 4, false, 0, |
252b5132 RH |
40 | complain_overflow_bitfield, 0, "r_imm4l", true, 0xf, 0xf, false); |
41 | ||
42 | static reloc_howto_type r_da = | |
43 | HOWTO (R_IMM16, 0, 1, 16, false, 0, | |
44 | complain_overflow_bitfield, 0, "r_da", true, 0x0000ffff, 0x0000ffff, | |
45 | false); | |
46 | ||
47 | static reloc_howto_type r_imm8 = | |
879db8be | 48 | HOWTO (R_IMM8, 0, 0, 8, false, 0, |
252b5132 RH |
49 | complain_overflow_bitfield, 0, "r_imm8", true, 0x000000ff, 0x000000ff, |
50 | false); | |
51 | ||
6840198f NC |
52 | static reloc_howto_type r_rel16 = |
53 | HOWTO (R_REL16, 0, 1, 16, false, 0, | |
54 | complain_overflow_bitfield, 0, "r_rel16", true, 0x0000ffff, 0x0000ffff, | |
55 | true); | |
56 | ||
252b5132 | 57 | static reloc_howto_type r_jr = |
879db8be | 58 | HOWTO (R_JR, 0, 0, 8, true, 0, complain_overflow_signed, 0, |
252b5132 RH |
59 | "r_jr", true, 0, 0, true); |
60 | ||
6840198f | 61 | static reloc_howto_type r_disp7 = |
879db8be | 62 | HOWTO (R_DISP7, 0, 0, 7, true, 0, complain_overflow_bitfield, 0, |
6840198f NC |
63 | "r_disp7", true, 0, 0, true); |
64 | ||
65 | static reloc_howto_type r_callr = | |
66 | HOWTO (R_CALLR, 0, 1, 12, true, 0, complain_overflow_signed, 0, | |
67 | "r_callr", true, 0xfff, 0xfff, true); | |
68 | ||
252b5132 RH |
69 | /* Turn a howto into a reloc number */ |
70 | ||
cbfe05c4 | 71 | static int |
252b5132 RH |
72 | coff_z8k_select_reloc (howto) |
73 | reloc_howto_type *howto; | |
74 | { | |
75 | return howto->type; | |
76 | } | |
77 | ||
78 | #define SELECT_RELOC(x,howto) x.r_type = coff_z8k_select_reloc(howto) | |
79 | ||
252b5132 RH |
80 | #define BADMAG(x) Z8KBADMAG(x) |
81 | #define Z8K 1 /* Customize coffcode.h */ | |
82 | #define __A_MAGIC_SET__ | |
83 | ||
252b5132 RH |
84 | /* Code to swap in the reloc */ |
85 | #define SWAP_IN_RELOC_OFFSET bfd_h_get_32 | |
86 | #define SWAP_OUT_RELOC_OFFSET bfd_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 | ||
94 | static void | |
95 | rtype2howto (internal, dst) | |
96 | arelent * internal; | |
97 | struct internal_reloc *dst; | |
98 | { | |
99 | switch (dst->r_type) | |
100 | { | |
101 | default: | |
102 | abort (); | |
103 | break; | |
104 | case R_IMM8: | |
105 | internal->howto = &r_imm8; | |
106 | break; | |
107 | case R_IMM16: | |
108 | internal->howto = &r_da; | |
109 | break; | |
110 | case R_JR: | |
111 | internal->howto = &r_jr; | |
112 | break; | |
6840198f NC |
113 | case R_DISP7: |
114 | internal->howto = &r_disp7; | |
115 | break; | |
116 | case R_CALLR: | |
117 | internal->howto = &r_callr; | |
118 | break; | |
119 | case R_REL16: | |
120 | internal->howto = &r_rel16; | |
121 | break; | |
252b5132 RH |
122 | case R_IMM32: |
123 | internal->howto = &r_imm32; | |
124 | break; | |
125 | case R_IMM4L: | |
126 | internal->howto = &r_imm4l; | |
127 | break; | |
128 | } | |
129 | } | |
130 | ||
131 | #define RTYPE2HOWTO(internal, relocentry) rtype2howto(internal,relocentry) | |
132 | ||
252b5132 RH |
133 | /* Perform any necessary magic to the addend in a reloc entry */ |
134 | ||
252b5132 RH |
135 | #define CALC_ADDEND(abfd, symbol, ext_reloc, cache_ptr) \ |
136 | cache_ptr->addend = ext_reloc.r_offset; | |
137 | ||
252b5132 RH |
138 | #define RELOC_PROCESSING(relent,reloc,symbols,abfd,section) \ |
139 | reloc_processing(relent, reloc, symbols, abfd, section) | |
140 | ||
cbfe05c4 | 141 | static void |
252b5132 RH |
142 | reloc_processing (relent, reloc, symbols, abfd, section) |
143 | arelent * relent; | |
879db8be | 144 | struct internal_reloc * reloc; |
252b5132 RH |
145 | asymbol ** symbols; |
146 | bfd * abfd; | |
147 | asection * section; | |
148 | { | |
149 | relent->address = reloc->r_vaddr; | |
150 | rtype2howto (relent, reloc); | |
151 | ||
152 | if (reloc->r_symndx > 0) | |
879db8be | 153 | relent->sym_ptr_ptr = symbols + obj_convert (abfd)[reloc->r_symndx]; |
252b5132 | 154 | else |
879db8be | 155 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
252b5132 | 156 | |
252b5132 RH |
157 | relent->addend = reloc->r_offset; |
158 | relent->address -= section->vma; | |
159 | } | |
160 | ||
161 | static void | |
162 | extra_case (in_abfd, link_info, link_order, reloc, data, src_ptr, dst_ptr) | |
879db8be NC |
163 | bfd * in_abfd; |
164 | struct bfd_link_info * link_info; | |
165 | struct bfd_link_order * link_order; | |
166 | arelent * reloc; | |
167 | bfd_byte * data; | |
168 | unsigned int * src_ptr; | |
169 | unsigned int * dst_ptr; | |
252b5132 | 170 | { |
879db8be | 171 | asection * input_section = link_order->u.indirect.section; |
252b5132 RH |
172 | |
173 | switch (reloc->howto->type) | |
174 | { | |
175 | case R_IMM8: | |
176 | bfd_put_8 (in_abfd, | |
177 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
178 | data + *dst_ptr); | |
179 | (*dst_ptr) += 1; | |
180 | (*src_ptr) += 1; | |
181 | break; | |
182 | ||
183 | case R_IMM32: | |
184 | bfd_put_32 (in_abfd, | |
879db8be NC |
185 | /* 0x80000000 indicates a long segmented address. */ |
186 | bfd_coff_reloc16_get_value (reloc, link_info, input_section) | 0x80000000, | |
252b5132 RH |
187 | data + *dst_ptr); |
188 | (*dst_ptr) += 4; | |
189 | (*src_ptr) += 4; | |
190 | break; | |
191 | ||
192 | case R_IMM4L: | |
193 | bfd_put_8 (in_abfd, | |
cbfe05c4 | 194 | ((bfd_get_8 (in_abfd, data + *dst_ptr) & 0xf0) |
252b5132 RH |
195 | | (0x0f |
196 | & bfd_coff_reloc16_get_value (reloc, link_info, | |
197 | input_section))), | |
198 | data + *dst_ptr); | |
199 | (*dst_ptr) += 1; | |
200 | (*src_ptr) += 1; | |
201 | break; | |
202 | ||
203 | case R_IMM16: | |
204 | bfd_put_16 (in_abfd, | |
205 | bfd_coff_reloc16_get_value (reloc, link_info, input_section), | |
206 | data + *dst_ptr); | |
207 | (*dst_ptr) += 2; | |
208 | (*src_ptr) += 2; | |
209 | break; | |
210 | ||
211 | case R_JR: | |
212 | { | |
213 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
214 | input_section); | |
215 | bfd_vma dot = (link_order->offset | |
216 | + *dst_ptr | |
217 | + input_section->output_section->vma); | |
879db8be NC |
218 | int gap = dst - dot - 1; /* -1, since we're in the odd byte of the |
219 | word and the pc's been incremented. */ | |
252b5132 RH |
220 | |
221 | if (gap & 1) | |
222 | abort (); | |
223 | gap /= 2; | |
224 | if (gap > 128 || gap < -128) | |
225 | { | |
226 | if (! ((*link_info->callbacks->reloc_overflow) | |
227 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
228 | reloc->howto->name, reloc->addend, input_section->owner, | |
229 | input_section, reloc->address))) | |
230 | abort (); | |
231 | } | |
232 | bfd_put_8 (in_abfd, gap, data + *dst_ptr); | |
233 | (*dst_ptr)++; | |
234 | (*src_ptr)++; | |
235 | break; | |
236 | } | |
6840198f NC |
237 | |
238 | case R_DISP7: | |
239 | { | |
240 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
241 | input_section); | |
242 | bfd_vma dot = (link_order->offset | |
243 | + *dst_ptr | |
244 | + input_section->output_section->vma); | |
879db8be NC |
245 | int gap = dst - dot - 1; /* -1, since we're in the odd byte of the |
246 | word and the pc's been incremented. */ | |
6840198f NC |
247 | |
248 | if (gap & 1) | |
249 | abort (); | |
250 | gap /= 2; | |
251 | ||
252 | if (gap > 0 || gap < -128) | |
253 | { | |
254 | if (! ((*link_info->callbacks->reloc_overflow) | |
255 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
256 | reloc->howto->name, reloc->addend, input_section->owner, | |
257 | input_section, reloc->address))) | |
258 | abort (); | |
259 | } | |
260 | bfd_put_8 (in_abfd, | |
261 | (bfd_get_8 ( in_abfd, data + *dst_ptr) & 0x80) + (-gap & 0x7f), | |
262 | data + *dst_ptr); | |
263 | (*dst_ptr)++; | |
264 | (*src_ptr)++; | |
265 | break; | |
266 | } | |
267 | ||
268 | case R_CALLR: | |
269 | { | |
270 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
271 | input_section); | |
272 | bfd_vma dot = (link_order->offset | |
273 | + *dst_ptr | |
274 | + input_section->output_section->vma); | |
275 | int gap = dst - dot - 2; | |
276 | ||
277 | if (gap & 1) | |
278 | abort (); | |
279 | gap /= 2; | |
280 | if (gap > 8191 || gap < -8192) | |
281 | { | |
282 | if (! ((*link_info->callbacks->reloc_overflow) | |
283 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
284 | reloc->howto->name, reloc->addend, input_section->owner, | |
285 | input_section, reloc->address))) | |
286 | abort (); | |
287 | } | |
288 | bfd_put_16 (in_abfd, | |
289 | (bfd_get_16 ( in_abfd, data + *dst_ptr) & 0xf000) | (-gap & 0x0fff), | |
290 | data + *dst_ptr); | |
291 | (*dst_ptr) += 2; | |
292 | (*src_ptr) += 2; | |
293 | break; | |
294 | } | |
295 | ||
296 | case R_REL16: | |
297 | { | |
298 | bfd_vma dst = bfd_coff_reloc16_get_value (reloc, link_info, | |
299 | input_section); | |
300 | bfd_vma dot = (link_order->offset | |
301 | + *dst_ptr | |
302 | + input_section->output_section->vma); | |
303 | int gap = dst - dot - 2; | |
304 | ||
305 | if (gap > 32767 || gap < -32768) | |
306 | { | |
307 | if (! ((*link_info->callbacks->reloc_overflow) | |
308 | (link_info, bfd_asymbol_name (*reloc->sym_ptr_ptr), | |
309 | reloc->howto->name, reloc->addend, input_section->owner, | |
310 | input_section, reloc->address))) | |
311 | abort (); | |
312 | } | |
313 | bfd_put_16 (in_abfd,gap,data + *dst_ptr); | |
314 | (*dst_ptr) += 2; | |
315 | (*src_ptr) += 2; | |
316 | break; | |
317 | } | |
879db8be | 318 | |
252b5132 RH |
319 | default: |
320 | abort (); | |
321 | } | |
322 | } | |
323 | ||
324 | #define coff_reloc16_extra_cases extra_case | |
325 | ||
326 | #include "coffcode.h" | |
327 | ||
252b5132 RH |
328 | #undef coff_bfd_get_relocated_section_contents |
329 | #undef coff_bfd_relax_section | |
330 | #define coff_bfd_get_relocated_section_contents \ | |
331 | bfd_coff_reloc16_get_relocated_section_contents | |
332 | #define coff_bfd_relax_section bfd_coff_reloc16_relax_section | |
333 | ||
c3c89269 | 334 | CREATE_BIG_COFF_TARGET_VEC (z8kcoff_vec, "coff-z8k", 0, 0, '_', NULL) |