Commit | Line | Data |
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c7927a3c | 1 | /* Renesas RX specific support for 32-bit ELF. |
219d1afa | 2 | Copyright (C) 2008-2018 Free Software Foundation, Inc. |
c7927a3c NC |
3 | |
4 | This file is part of BFD, the Binary File Descriptor library. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 3 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
863f7a5f NC |
18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
19 | MA 02110-1301, USA. */ | |
c7927a3c NC |
20 | |
21 | #include "sysdep.h" | |
22 | #include "bfd.h" | |
d68cd58c | 23 | #include "bfd_stdint.h" |
c7927a3c NC |
24 | #include "libbfd.h" |
25 | #include "elf-bfd.h" | |
26 | #include "elf/rx.h" | |
27 | #include "libiberty.h" | |
7a2f2d82 | 28 | #include "elf32-rx.h" |
c7927a3c NC |
29 | |
30 | #define RX_OPCODE_BIG_ENDIAN 0 | |
31 | ||
4c422395 DD |
32 | /* This is a meta-target that's used only with objcopy, to avoid the |
33 | endian-swap we would otherwise get. We check for this in | |
34 | rx_elf_object_p(). */ | |
6d00b590 AM |
35 | const bfd_target rx_elf32_be_ns_vec; |
36 | const bfd_target rx_elf32_be_vec; | |
4c422395 | 37 | |
c7927a3c NC |
38 | #ifdef DEBUG |
39 | char * rx_get_reloc (long); | |
9ccb8af9 | 40 | void rx_dump_symtab (bfd *, void *, void *); |
c7927a3c NC |
41 | #endif |
42 | ||
43 | #define RXREL(n,sz,bit,shift,complain,pcrel) \ | |
44 | HOWTO (R_RX_##n, shift, sz, bit, pcrel, 0, complain_overflow_ ## complain, \ | |
45 | bfd_elf_generic_reloc, "R_RX_" #n, FALSE, 0, ~0, FALSE) | |
46 | ||
47 | /* Note that the relocations around 0x7f are internal to this file; | |
48 | feel free to move them as needed to avoid conflicts with published | |
49 | relocation numbers. */ | |
50 | ||
51 | static reloc_howto_type rx_elf_howto_table [] = | |
52 | { | |
07d6d2b8 AM |
53 | RXREL (NONE, 3, 0, 0, dont, FALSE), |
54 | RXREL (DIR32, 2, 32, 0, signed, FALSE), | |
c7927a3c | 55 | RXREL (DIR24S, 2, 24, 0, signed, FALSE), |
07d6d2b8 | 56 | RXREL (DIR16, 1, 16, 0, dont, FALSE), |
c7927a3c NC |
57 | RXREL (DIR16U, 1, 16, 0, unsigned, FALSE), |
58 | RXREL (DIR16S, 1, 16, 0, signed, FALSE), | |
07d6d2b8 AM |
59 | RXREL (DIR8, 0, 8, 0, dont, FALSE), |
60 | RXREL (DIR8U, 0, 8, 0, unsigned, FALSE), | |
61 | RXREL (DIR8S, 0, 8, 0, signed, FALSE), | |
c7927a3c NC |
62 | RXREL (DIR24S_PCREL, 2, 24, 0, signed, TRUE), |
63 | RXREL (DIR16S_PCREL, 1, 16, 0, signed, TRUE), | |
64 | RXREL (DIR8S_PCREL, 0, 8, 0, signed, TRUE), | |
65 | RXREL (DIR16UL, 1, 16, 2, unsigned, FALSE), | |
66 | RXREL (DIR16UW, 1, 16, 1, unsigned, FALSE), | |
67 | RXREL (DIR8UL, 0, 8, 2, unsigned, FALSE), | |
68 | RXREL (DIR8UW, 0, 8, 1, unsigned, FALSE), | |
07d6d2b8 AM |
69 | RXREL (DIR32_REV, 1, 16, 0, dont, FALSE), |
70 | RXREL (DIR16_REV, 1, 16, 0, dont, FALSE), | |
71 | RXREL (DIR3U_PCREL, 0, 3, 0, dont, TRUE), | |
c7927a3c NC |
72 | |
73 | EMPTY_HOWTO (0x13), | |
74 | EMPTY_HOWTO (0x14), | |
75 | EMPTY_HOWTO (0x15), | |
76 | EMPTY_HOWTO (0x16), | |
77 | EMPTY_HOWTO (0x17), | |
78 | EMPTY_HOWTO (0x18), | |
79 | EMPTY_HOWTO (0x19), | |
80 | EMPTY_HOWTO (0x1a), | |
81 | EMPTY_HOWTO (0x1b), | |
82 | EMPTY_HOWTO (0x1c), | |
83 | EMPTY_HOWTO (0x1d), | |
84 | EMPTY_HOWTO (0x1e), | |
85 | EMPTY_HOWTO (0x1f), | |
86 | ||
07d6d2b8 AM |
87 | RXREL (RH_3_PCREL, 0, 3, 0, signed, TRUE), |
88 | RXREL (RH_16_OP, 1, 16, 0, signed, FALSE), | |
89 | RXREL (RH_24_OP, 2, 24, 0, signed, FALSE), | |
90 | RXREL (RH_32_OP, 2, 32, 0, signed, FALSE), | |
c7927a3c | 91 | RXREL (RH_24_UNS, 2, 24, 0, unsigned, FALSE), |
07d6d2b8 AM |
92 | RXREL (RH_8_NEG, 0, 8, 0, signed, FALSE), |
93 | RXREL (RH_16_NEG, 1, 16, 0, signed, FALSE), | |
94 | RXREL (RH_24_NEG, 2, 24, 0, signed, FALSE), | |
95 | RXREL (RH_32_NEG, 2, 32, 0, signed, FALSE), | |
96 | RXREL (RH_DIFF, 2, 32, 0, signed, FALSE), | |
c7927a3c NC |
97 | RXREL (RH_GPRELB, 1, 16, 0, unsigned, FALSE), |
98 | RXREL (RH_GPRELW, 1, 16, 0, unsigned, FALSE), | |
99 | RXREL (RH_GPRELL, 1, 16, 0, unsigned, FALSE), | |
07d6d2b8 | 100 | RXREL (RH_RELAX, 0, 0, 0, dont, FALSE), |
c7927a3c NC |
101 | |
102 | EMPTY_HOWTO (0x2e), | |
103 | EMPTY_HOWTO (0x2f), | |
104 | EMPTY_HOWTO (0x30), | |
105 | EMPTY_HOWTO (0x31), | |
106 | EMPTY_HOWTO (0x32), | |
107 | EMPTY_HOWTO (0x33), | |
108 | EMPTY_HOWTO (0x34), | |
109 | EMPTY_HOWTO (0x35), | |
110 | EMPTY_HOWTO (0x36), | |
111 | EMPTY_HOWTO (0x37), | |
112 | EMPTY_HOWTO (0x38), | |
113 | EMPTY_HOWTO (0x39), | |
114 | EMPTY_HOWTO (0x3a), | |
115 | EMPTY_HOWTO (0x3b), | |
116 | EMPTY_HOWTO (0x3c), | |
117 | EMPTY_HOWTO (0x3d), | |
118 | EMPTY_HOWTO (0x3e), | |
119 | EMPTY_HOWTO (0x3f), | |
120 | EMPTY_HOWTO (0x40), | |
121 | ||
07d6d2b8 | 122 | RXREL (ABS32, 2, 32, 0, dont, FALSE), |
c7927a3c | 123 | RXREL (ABS24S, 2, 24, 0, signed, FALSE), |
07d6d2b8 | 124 | RXREL (ABS16, 1, 16, 0, dont, FALSE), |
c7927a3c NC |
125 | RXREL (ABS16U, 1, 16, 0, unsigned, FALSE), |
126 | RXREL (ABS16S, 1, 16, 0, signed, FALSE), | |
07d6d2b8 AM |
127 | RXREL (ABS8, 0, 8, 0, dont, FALSE), |
128 | RXREL (ABS8U, 0, 8, 0, unsigned, FALSE), | |
129 | RXREL (ABS8S, 0, 8, 0, signed, FALSE), | |
c7927a3c NC |
130 | RXREL (ABS24S_PCREL, 2, 24, 0, signed, TRUE), |
131 | RXREL (ABS16S_PCREL, 1, 16, 0, signed, TRUE), | |
132 | RXREL (ABS8S_PCREL, 0, 8, 0, signed, TRUE), | |
133 | RXREL (ABS16UL, 1, 16, 0, unsigned, FALSE), | |
134 | RXREL (ABS16UW, 1, 16, 0, unsigned, FALSE), | |
135 | RXREL (ABS8UL, 0, 8, 0, unsigned, FALSE), | |
136 | RXREL (ABS8UW, 0, 8, 0, unsigned, FALSE), | |
07d6d2b8 AM |
137 | RXREL (ABS32_REV, 2, 32, 0, dont, FALSE), |
138 | RXREL (ABS16_REV, 1, 16, 0, dont, FALSE), | |
c7927a3c NC |
139 | |
140 | #define STACK_REL_P(x) ((x) <= R_RX_ABS16_REV && (x) >= R_RX_ABS32) | |
141 | ||
142 | EMPTY_HOWTO (0x52), | |
143 | EMPTY_HOWTO (0x53), | |
144 | EMPTY_HOWTO (0x54), | |
145 | EMPTY_HOWTO (0x55), | |
146 | EMPTY_HOWTO (0x56), | |
147 | EMPTY_HOWTO (0x57), | |
148 | EMPTY_HOWTO (0x58), | |
149 | EMPTY_HOWTO (0x59), | |
150 | EMPTY_HOWTO (0x5a), | |
151 | EMPTY_HOWTO (0x5b), | |
152 | EMPTY_HOWTO (0x5c), | |
153 | EMPTY_HOWTO (0x5d), | |
154 | EMPTY_HOWTO (0x5e), | |
155 | EMPTY_HOWTO (0x5f), | |
156 | EMPTY_HOWTO (0x60), | |
157 | EMPTY_HOWTO (0x61), | |
158 | EMPTY_HOWTO (0x62), | |
159 | EMPTY_HOWTO (0x63), | |
160 | EMPTY_HOWTO (0x64), | |
161 | EMPTY_HOWTO (0x65), | |
162 | EMPTY_HOWTO (0x66), | |
163 | EMPTY_HOWTO (0x67), | |
164 | EMPTY_HOWTO (0x68), | |
165 | EMPTY_HOWTO (0x69), | |
166 | EMPTY_HOWTO (0x6a), | |
167 | EMPTY_HOWTO (0x6b), | |
168 | EMPTY_HOWTO (0x6c), | |
169 | EMPTY_HOWTO (0x6d), | |
170 | EMPTY_HOWTO (0x6e), | |
171 | EMPTY_HOWTO (0x6f), | |
172 | EMPTY_HOWTO (0x70), | |
173 | EMPTY_HOWTO (0x71), | |
174 | EMPTY_HOWTO (0x72), | |
175 | EMPTY_HOWTO (0x73), | |
176 | EMPTY_HOWTO (0x74), | |
177 | EMPTY_HOWTO (0x75), | |
178 | EMPTY_HOWTO (0x76), | |
179 | EMPTY_HOWTO (0x77), | |
180 | ||
181 | /* These are internal. */ | |
182 | /* A 5-bit unsigned displacement to a B/W/L address, at bit position 8/12. */ | |
183 | /* ---- ---- 4--- 3210. */ | |
184 | #define R_RX_RH_ABS5p8B 0x78 | |
07d6d2b8 | 185 | RXREL (RH_ABS5p8B, 0, 0, 0, dont, FALSE), |
c7927a3c | 186 | #define R_RX_RH_ABS5p8W 0x79 |
07d6d2b8 | 187 | RXREL (RH_ABS5p8W, 0, 0, 0, dont, FALSE), |
c7927a3c | 188 | #define R_RX_RH_ABS5p8L 0x7a |
07d6d2b8 | 189 | RXREL (RH_ABS5p8L, 0, 0, 0, dont, FALSE), |
c7927a3c NC |
190 | /* A 5-bit unsigned displacement to a B/W/L address, at bit position 5/12. */ |
191 | /* ---- -432 1--- 0---. */ | |
192 | #define R_RX_RH_ABS5p5B 0x7b | |
07d6d2b8 | 193 | RXREL (RH_ABS5p5B, 0, 0, 0, dont, FALSE), |
c7927a3c | 194 | #define R_RX_RH_ABS5p5W 0x7c |
07d6d2b8 | 195 | RXREL (RH_ABS5p5W, 0, 0, 0, dont, FALSE), |
c7927a3c | 196 | #define R_RX_RH_ABS5p5L 0x7d |
07d6d2b8 | 197 | RXREL (RH_ABS5p5L, 0, 0, 0, dont, FALSE), |
c7927a3c NC |
198 | /* A 4-bit unsigned immediate at bit position 8. */ |
199 | #define R_RX_RH_UIMM4p8 0x7e | |
07d6d2b8 | 200 | RXREL (RH_UIMM4p8, 0, 0, 0, dont, FALSE), |
c7927a3c NC |
201 | /* A 4-bit negative unsigned immediate at bit position 8. */ |
202 | #define R_RX_RH_UNEG4p8 0x7f | |
07d6d2b8 | 203 | RXREL (RH_UNEG4p8, 0, 0, 0, dont, FALSE), |
c7927a3c NC |
204 | /* End of internal relocs. */ |
205 | ||
07d6d2b8 AM |
206 | RXREL (SYM, 2, 32, 0, dont, FALSE), |
207 | RXREL (OPneg, 2, 32, 0, dont, FALSE), | |
208 | RXREL (OPadd, 2, 32, 0, dont, FALSE), | |
209 | RXREL (OPsub, 2, 32, 0, dont, FALSE), | |
210 | RXREL (OPmul, 2, 32, 0, dont, FALSE), | |
211 | RXREL (OPdiv, 2, 32, 0, dont, FALSE), | |
c7927a3c NC |
212 | RXREL (OPshla, 2, 32, 0, dont, FALSE), |
213 | RXREL (OPshra, 2, 32, 0, dont, FALSE), | |
214 | RXREL (OPsctsize, 2, 32, 0, dont, FALSE), | |
215 | RXREL (OPscttop, 2, 32, 0, dont, FALSE), | |
07d6d2b8 AM |
216 | RXREL (OPand, 2, 32, 0, dont, FALSE), |
217 | RXREL (OPor, 2, 32, 0, dont, FALSE), | |
218 | RXREL (OPxor, 2, 32, 0, dont, FALSE), | |
219 | RXREL (OPnot, 2, 32, 0, dont, FALSE), | |
220 | RXREL (OPmod, 2, 32, 0, dont, FALSE), | |
c7927a3c NC |
221 | RXREL (OPromtop, 2, 32, 0, dont, FALSE), |
222 | RXREL (OPramtop, 2, 32, 0, dont, FALSE) | |
223 | }; | |
224 | \f | |
225 | /* Map BFD reloc types to RX ELF reloc types. */ | |
226 | ||
227 | struct rx_reloc_map | |
228 | { | |
229 | bfd_reloc_code_real_type bfd_reloc_val; | |
07d6d2b8 | 230 | unsigned int rx_reloc_val; |
c7927a3c NC |
231 | }; |
232 | ||
233 | static const struct rx_reloc_map rx_reloc_map [] = | |
234 | { | |
235 | { BFD_RELOC_NONE, R_RX_NONE }, | |
236 | { BFD_RELOC_8, R_RX_DIR8S }, | |
237 | { BFD_RELOC_16, R_RX_DIR16S }, | |
238 | { BFD_RELOC_24, R_RX_DIR24S }, | |
239 | { BFD_RELOC_32, R_RX_DIR32 }, | |
240 | { BFD_RELOC_RX_16_OP, R_RX_DIR16 }, | |
241 | { BFD_RELOC_RX_DIR3U_PCREL, R_RX_DIR3U_PCREL }, | |
242 | { BFD_RELOC_8_PCREL, R_RX_DIR8S_PCREL }, | |
243 | { BFD_RELOC_16_PCREL, R_RX_DIR16S_PCREL }, | |
244 | { BFD_RELOC_24_PCREL, R_RX_DIR24S_PCREL }, | |
245 | { BFD_RELOC_RX_8U, R_RX_DIR8U }, | |
246 | { BFD_RELOC_RX_16U, R_RX_DIR16U }, | |
247 | { BFD_RELOC_RX_24U, R_RX_RH_24_UNS }, | |
248 | { BFD_RELOC_RX_NEG8, R_RX_RH_8_NEG }, | |
249 | { BFD_RELOC_RX_NEG16, R_RX_RH_16_NEG }, | |
250 | { BFD_RELOC_RX_NEG24, R_RX_RH_24_NEG }, | |
251 | { BFD_RELOC_RX_NEG32, R_RX_RH_32_NEG }, | |
252 | { BFD_RELOC_RX_DIFF, R_RX_RH_DIFF }, | |
253 | { BFD_RELOC_RX_GPRELB, R_RX_RH_GPRELB }, | |
254 | { BFD_RELOC_RX_GPRELW, R_RX_RH_GPRELW }, | |
255 | { BFD_RELOC_RX_GPRELL, R_RX_RH_GPRELL }, | |
256 | { BFD_RELOC_RX_RELAX, R_RX_RH_RELAX }, | |
257 | { BFD_RELOC_RX_SYM, R_RX_SYM }, | |
258 | { BFD_RELOC_RX_OP_SUBTRACT, R_RX_OPsub }, | |
9689e3a3 | 259 | { BFD_RELOC_RX_OP_NEG, R_RX_OPneg }, |
c7927a3c NC |
260 | { BFD_RELOC_RX_ABS8, R_RX_ABS8 }, |
261 | { BFD_RELOC_RX_ABS16, R_RX_ABS16 }, | |
e8ef21bf | 262 | { BFD_RELOC_RX_ABS16_REV, R_RX_ABS16_REV }, |
c7927a3c | 263 | { BFD_RELOC_RX_ABS32, R_RX_ABS32 }, |
e8ef21bf | 264 | { BFD_RELOC_RX_ABS32_REV, R_RX_ABS32_REV }, |
c7927a3c NC |
265 | { BFD_RELOC_RX_ABS16UL, R_RX_ABS16UL }, |
266 | { BFD_RELOC_RX_ABS16UW, R_RX_ABS16UW }, | |
267 | { BFD_RELOC_RX_ABS16U, R_RX_ABS16U } | |
268 | }; | |
269 | ||
270 | #define BIGE(abfd) ((abfd)->xvec->byteorder == BFD_ENDIAN_BIG) | |
271 | ||
272 | static reloc_howto_type * | |
07d6d2b8 | 273 | rx_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, |
c7927a3c NC |
274 | bfd_reloc_code_real_type code) |
275 | { | |
276 | unsigned int i; | |
277 | ||
278 | if (code == BFD_RELOC_RX_32_OP) | |
279 | return rx_elf_howto_table + R_RX_DIR32; | |
280 | ||
0ba38529 | 281 | for (i = ARRAY_SIZE (rx_reloc_map); i--;) |
c7927a3c NC |
282 | if (rx_reloc_map [i].bfd_reloc_val == code) |
283 | return rx_elf_howto_table + rx_reloc_map[i].rx_reloc_val; | |
284 | ||
285 | return NULL; | |
286 | } | |
287 | ||
288 | static reloc_howto_type * | |
289 | rx_reloc_name_lookup (bfd * abfd ATTRIBUTE_UNUSED, const char * r_name) | |
290 | { | |
291 | unsigned int i; | |
292 | ||
293 | for (i = 0; i < ARRAY_SIZE (rx_elf_howto_table); i++) | |
294 | if (rx_elf_howto_table[i].name != NULL | |
295 | && strcasecmp (rx_elf_howto_table[i].name, r_name) == 0) | |
296 | return rx_elf_howto_table + i; | |
297 | ||
298 | return NULL; | |
299 | } | |
300 | ||
301 | /* Set the howto pointer for an RX ELF reloc. */ | |
302 | ||
303 | static void | |
07d6d2b8 AM |
304 | rx_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, |
305 | arelent * cache_ptr, | |
c7927a3c NC |
306 | Elf_Internal_Rela * dst) |
307 | { | |
308 | unsigned int r_type; | |
309 | ||
310 | r_type = ELF32_R_TYPE (dst->r_info); | |
5860e3f8 NC |
311 | if (r_type >= (unsigned int) R_RX_max) |
312 | { | |
695344c0 | 313 | /* xgettext:c-format */ |
64d29018 | 314 | _bfd_error_handler (_("%B: invalid RX reloc number: %d"), abfd, r_type); |
5860e3f8 NC |
315 | r_type = 0; |
316 | } | |
c7927a3c NC |
317 | cache_ptr->howto = rx_elf_howto_table + r_type; |
318 | } | |
319 | \f | |
320 | static bfd_vma | |
07d6d2b8 | 321 | get_symbol_value (const char * name, |
c7927a3c | 322 | struct bfd_link_info * info, |
07d6d2b8 AM |
323 | bfd * input_bfd, |
324 | asection * input_section, | |
c7927a3c NC |
325 | int offset) |
326 | { | |
327 | bfd_vma value = 0; | |
328 | struct bfd_link_hash_entry * h; | |
329 | ||
330 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); | |
331 | ||
332 | if (h == NULL | |
333 | || (h->type != bfd_link_hash_defined | |
334 | && h->type != bfd_link_hash_defweak)) | |
1a72702b | 335 | (*info->callbacks->undefined_symbol) |
c7927a3c NC |
336 | (info, name, input_bfd, input_section, offset, TRUE); |
337 | else | |
338 | value = (h->u.def.value | |
339 | + h->u.def.section->output_section->vma | |
340 | + h->u.def.section->output_offset); | |
341 | ||
342 | return value; | |
343 | } | |
1a72702b | 344 | |
7a2f2d82 | 345 | static bfd_vma |
07d6d2b8 | 346 | get_symbol_value_maybe (const char * name, |
7a2f2d82 DD |
347 | struct bfd_link_info * info) |
348 | { | |
349 | bfd_vma value = 0; | |
350 | struct bfd_link_hash_entry * h; | |
351 | ||
352 | h = bfd_link_hash_lookup (info->hash, name, FALSE, FALSE, TRUE); | |
353 | ||
354 | if (h == NULL | |
355 | || (h->type != bfd_link_hash_defined | |
356 | && h->type != bfd_link_hash_defweak)) | |
357 | return 0; | |
358 | else | |
359 | value = (h->u.def.value | |
360 | + h->u.def.section->output_section->vma | |
361 | + h->u.def.section->output_offset); | |
362 | ||
363 | return value; | |
364 | } | |
c7927a3c NC |
365 | |
366 | static bfd_vma | |
07d6d2b8 AM |
367 | get_gp (struct bfd_link_info * info, |
368 | bfd * abfd, | |
369 | asection * sec, | |
c7927a3c NC |
370 | int offset) |
371 | { | |
372 | static bfd_boolean cached = FALSE; | |
373 | static bfd_vma cached_value = 0; | |
374 | ||
375 | if (!cached) | |
376 | { | |
1a72702b | 377 | cached_value = get_symbol_value ("__gp", info, abfd, sec, offset); |
c7927a3c NC |
378 | cached = TRUE; |
379 | } | |
380 | return cached_value; | |
381 | } | |
382 | ||
383 | static bfd_vma | |
1a72702b | 384 | get_romstart (struct bfd_link_info * info, |
07d6d2b8 AM |
385 | bfd * abfd, |
386 | asection * sec, | |
c7927a3c NC |
387 | int offset) |
388 | { | |
389 | static bfd_boolean cached = FALSE; | |
390 | static bfd_vma cached_value = 0; | |
391 | ||
392 | if (!cached) | |
393 | { | |
1a72702b | 394 | cached_value = get_symbol_value ("_start", info, abfd, sec, offset); |
c7927a3c NC |
395 | cached = TRUE; |
396 | } | |
397 | return cached_value; | |
398 | } | |
399 | ||
400 | static bfd_vma | |
1a72702b | 401 | get_ramstart (struct bfd_link_info * info, |
07d6d2b8 AM |
402 | bfd * abfd, |
403 | asection * sec, | |
c7927a3c NC |
404 | int offset) |
405 | { | |
406 | static bfd_boolean cached = FALSE; | |
407 | static bfd_vma cached_value = 0; | |
408 | ||
409 | if (!cached) | |
410 | { | |
1a72702b | 411 | cached_value = get_symbol_value ("__datastart", info, abfd, sec, offset); |
c7927a3c NC |
412 | cached = TRUE; |
413 | } | |
414 | return cached_value; | |
415 | } | |
416 | ||
417 | #define NUM_STACK_ENTRIES 16 | |
418 | static int32_t rx_stack [ NUM_STACK_ENTRIES ]; | |
419 | static unsigned int rx_stack_top; | |
420 | ||
421 | #define RX_STACK_PUSH(val) \ | |
422 | do \ | |
423 | { \ | |
424 | if (rx_stack_top < NUM_STACK_ENTRIES) \ | |
07d6d2b8 | 425 | rx_stack [rx_stack_top ++] = (val); \ |
c7927a3c | 426 | else \ |
07d6d2b8 | 427 | r = bfd_reloc_dangerous; \ |
c7927a3c NC |
428 | } \ |
429 | while (0) | |
430 | ||
431 | #define RX_STACK_POP(dest) \ | |
432 | do \ | |
433 | { \ | |
434 | if (rx_stack_top > 0) \ | |
07d6d2b8 | 435 | (dest) = rx_stack [-- rx_stack_top]; \ |
c7927a3c | 436 | else \ |
07d6d2b8 | 437 | (dest) = 0, r = bfd_reloc_dangerous; \ |
c7927a3c NC |
438 | } \ |
439 | while (0) | |
440 | ||
441 | /* Relocate an RX ELF section. | |
442 | There is some attempt to make this function usable for many architectures, | |
443 | both USE_REL and USE_RELA ['twould be nice if such a critter existed], | |
444 | if only to serve as a learning tool. | |
445 | ||
446 | The RELOCATE_SECTION function is called by the new ELF backend linker | |
447 | to handle the relocations for a section. | |
448 | ||
449 | The relocs are always passed as Rela structures; if the section | |
450 | actually uses Rel structures, the r_addend field will always be | |
451 | zero. | |
452 | ||
453 | This function is responsible for adjusting the section contents as | |
454 | necessary, and (if using Rela relocs and generating a relocatable | |
455 | output file) adjusting the reloc addend as necessary. | |
456 | ||
457 | This function does not have to worry about setting the reloc | |
458 | address or the reloc symbol index. | |
459 | ||
460 | LOCAL_SYMS is a pointer to the swapped in local symbols. | |
461 | ||
462 | LOCAL_SECTIONS is an array giving the section in the input file | |
463 | corresponding to the st_shndx field of each local symbol. | |
464 | ||
465 | The global hash table entry for the global symbols can be found | |
466 | via elf_sym_hashes (input_bfd). | |
467 | ||
468 | When generating relocatable output, this function must handle | |
469 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is | |
470 | going to be the section symbol corresponding to the output | |
471 | section, which means that the addend must be adjusted | |
472 | accordingly. */ | |
473 | ||
474 | static bfd_boolean | |
475 | rx_elf_relocate_section | |
07d6d2b8 | 476 | (bfd * output_bfd, |
c7927a3c | 477 | struct bfd_link_info * info, |
07d6d2b8 AM |
478 | bfd * input_bfd, |
479 | asection * input_section, | |
480 | bfd_byte * contents, | |
c7927a3c | 481 | Elf_Internal_Rela * relocs, |
07d6d2b8 AM |
482 | Elf_Internal_Sym * local_syms, |
483 | asection ** local_sections) | |
c7927a3c | 484 | { |
07d6d2b8 | 485 | Elf_Internal_Shdr * symtab_hdr; |
c7927a3c | 486 | struct elf_link_hash_entry ** sym_hashes; |
07d6d2b8 AM |
487 | Elf_Internal_Rela * rel; |
488 | Elf_Internal_Rela * relend; | |
d4cb0ea0 NC |
489 | bfd_boolean pid_mode; |
490 | bfd_boolean saw_subtract = FALSE; | |
7a2f2d82 DD |
491 | const char * table_default_cache = NULL; |
492 | bfd_vma table_start_cache = 0; | |
493 | bfd_vma table_end_cache = 0; | |
d4cb0ea0 NC |
494 | |
495 | if (elf_elfheader (output_bfd)->e_flags & E_FLAG_RX_PID) | |
496 | pid_mode = TRUE; | |
497 | else | |
498 | pid_mode = FALSE; | |
c7927a3c NC |
499 | |
500 | symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; | |
501 | sym_hashes = elf_sym_hashes (input_bfd); | |
502 | relend = relocs + input_section->reloc_count; | |
c7927a3c NC |
503 | for (rel = relocs; rel < relend; rel ++) |
504 | { | |
07d6d2b8 AM |
505 | reloc_howto_type * howto; |
506 | unsigned long r_symndx; | |
507 | Elf_Internal_Sym * sym; | |
508 | asection * sec; | |
c7927a3c | 509 | struct elf_link_hash_entry * h; |
07d6d2b8 AM |
510 | bfd_vma relocation; |
511 | bfd_reloc_status_type r; | |
512 | const char * name = NULL; | |
513 | bfd_boolean unresolved_reloc = TRUE; | |
514 | int r_type; | |
c7927a3c NC |
515 | |
516 | r_type = ELF32_R_TYPE (rel->r_info); | |
517 | r_symndx = ELF32_R_SYM (rel->r_info); | |
518 | ||
519 | howto = rx_elf_howto_table + ELF32_R_TYPE (rel->r_info); | |
07d6d2b8 | 520 | h = NULL; |
c7927a3c NC |
521 | sym = NULL; |
522 | sec = NULL; | |
523 | relocation = 0; | |
524 | ||
d4cb0ea0 NC |
525 | if (rx_stack_top == 0) |
526 | saw_subtract = FALSE; | |
527 | ||
c7927a3c NC |
528 | if (r_symndx < symtab_hdr->sh_info) |
529 | { | |
530 | sym = local_syms + r_symndx; | |
531 | sec = local_sections [r_symndx]; | |
532 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, & sec, rel); | |
533 | ||
534 | name = bfd_elf_string_from_elf_section | |
535 | (input_bfd, symtab_hdr->sh_link, sym->st_name); | |
536 | name = (sym->st_name == 0) ? bfd_section_name (input_bfd, sec) : name; | |
537 | } | |
538 | else | |
539 | { | |
62d887d4 | 540 | bfd_boolean warned, ignored; |
c7927a3c NC |
541 | |
542 | RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, | |
543 | r_symndx, symtab_hdr, sym_hashes, h, | |
544 | sec, relocation, unresolved_reloc, | |
62d887d4 | 545 | warned, ignored); |
c7927a3c NC |
546 | |
547 | name = h->root.root.string; | |
548 | } | |
549 | ||
7a2f2d82 DD |
550 | if (strncmp (name, "$tableentry$default$", 20) == 0) |
551 | { | |
552 | bfd_vma entry_vma; | |
553 | int idx; | |
554 | char *buf; | |
7a2f2d82 DD |
555 | |
556 | if (table_default_cache != name) | |
557 | { | |
558 | ||
559 | /* All relocs for a given table should be to the same | |
560 | (weak) default symbol) so we can use it to detect a | |
561 | cache miss. We use the offset into the table to find | |
562 | the "real" symbol. Calculate and store the table's | |
563 | offset here. */ | |
564 | ||
565 | table_default_cache = name; | |
566 | ||
567 | /* We have already done error checking in rx_table_find(). */ | |
568 | ||
569 | buf = (char *) malloc (13 + strlen (name + 20)); | |
570 | ||
571 | sprintf (buf, "$tablestart$%s", name + 20); | |
7a2f2d82 | 572 | table_start_cache = get_symbol_value (buf, |
7a2f2d82 DD |
573 | info, |
574 | input_bfd, | |
575 | input_section, | |
576 | rel->r_offset); | |
577 | ||
578 | sprintf (buf, "$tableend$%s", name + 20); | |
7a2f2d82 | 579 | table_end_cache = get_symbol_value (buf, |
7a2f2d82 DD |
580 | info, |
581 | input_bfd, | |
582 | input_section, | |
583 | rel->r_offset); | |
584 | ||
585 | free (buf); | |
586 | } | |
587 | ||
588 | entry_vma = (input_section->output_section->vma | |
589 | + input_section->output_offset | |
590 | + rel->r_offset); | |
591 | ||
592 | if (table_end_cache <= entry_vma || entry_vma < table_start_cache) | |
593 | { | |
695344c0 | 594 | /* xgettext:c-format */ |
7a2f2d82 DD |
595 | _bfd_error_handler (_("%B:%A: table entry %s outside table"), |
596 | input_bfd, input_section, | |
597 | name); | |
598 | } | |
599 | else if ((int) (entry_vma - table_start_cache) % 4) | |
600 | { | |
695344c0 | 601 | /* xgettext:c-format */ |
7a2f2d82 DD |
602 | _bfd_error_handler (_("%B:%A: table entry %s not word-aligned within table"), |
603 | input_bfd, input_section, | |
604 | name); | |
605 | } | |
606 | else | |
607 | { | |
608 | idx = (int) (entry_vma - table_start_cache) / 4; | |
609 | ||
610 | /* This will look like $tableentry$<N>$<name> */ | |
611 | buf = (char *) malloc (12 + 20 + strlen (name + 20)); | |
612 | sprintf (buf, "$tableentry$%d$%s", idx, name + 20); | |
613 | ||
614 | h = (struct elf_link_hash_entry *) bfd_link_hash_lookup (info->hash, buf, FALSE, FALSE, TRUE); | |
615 | ||
616 | if (h) | |
617 | { | |
618 | relocation = (h->root.u.def.value | |
619 | + h->root.u.def.section->output_section->vma | |
620 | + h->root.u.def.section->output_offset);; | |
621 | } | |
622 | ||
623 | free (buf); | |
624 | } | |
625 | } | |
626 | ||
dbaa2011 | 627 | if (sec != NULL && discarded_section (sec)) |
e4067dbb | 628 | RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, |
545fd46b | 629 | rel, 1, relend, howto, 0, contents); |
c7927a3c | 630 | |
0e1862bb | 631 | if (bfd_link_relocatable (info)) |
c7927a3c NC |
632 | { |
633 | /* This is a relocatable link. We don't have to change | |
07d6d2b8 AM |
634 | anything, unless the reloc is against a section symbol, |
635 | in which case we have to adjust according to where the | |
636 | section symbol winds up in the output section. */ | |
c7927a3c NC |
637 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
638 | rel->r_addend += sec->output_offset; | |
639 | continue; | |
640 | } | |
641 | ||
642 | if (h != NULL && h->root.type == bfd_link_hash_undefweak) | |
643 | /* If the symbol is undefined and weak | |
644 | then the relocation resolves to zero. */ | |
645 | relocation = 0; | |
646 | else | |
647 | { | |
648 | if (howto->pc_relative) | |
649 | { | |
650 | relocation -= (input_section->output_section->vma | |
651 | + input_section->output_offset | |
652 | + rel->r_offset); | |
653 | if (r_type != R_RX_RH_3_PCREL | |
654 | && r_type != R_RX_DIR3U_PCREL) | |
655 | relocation ++; | |
656 | } | |
657 | ||
658 | relocation += rel->r_addend; | |
659 | } | |
660 | ||
661 | r = bfd_reloc_ok; | |
662 | ||
663 | #define RANGE(a,b) if (a > (long) relocation || (long) relocation > b) r = bfd_reloc_overflow | |
664 | #define ALIGN(m) if (relocation & m) r = bfd_reloc_other; | |
665 | #define OP(i) (contents[rel->r_offset + (i)]) | |
666 | #define WARN_REDHAT(type) \ | |
695344c0 | 667 | /* xgettext:c-format */ \ |
c7927a3c NC |
668 | _bfd_error_handler (_("%B:%A: Warning: deprecated Red Hat reloc " type " detected against: %s."), \ |
669 | input_bfd, input_section, name) | |
670 | ||
d4cb0ea0 NC |
671 | /* Check for unsafe relocs in PID mode. These are any relocs where |
672 | an absolute address is being computed. There are special cases | |
673 | for relocs against symbols that are known to be referenced in | |
674 | crt0.o before the PID base address register has been initialised. */ | |
675 | #define UNSAFE_FOR_PID \ | |
676 | do \ | |
677 | { \ | |
678 | if (pid_mode \ | |
07d6d2b8 | 679 | && sec != NULL \ |
d4cb0ea0 NC |
680 | && sec->flags & SEC_READONLY \ |
681 | && !(input_section->flags & SEC_DEBUGGING) \ | |
682 | && strcmp (name, "__pid_base") != 0 \ | |
683 | && strcmp (name, "__gp") != 0 \ | |
684 | && strcmp (name, "__romdatastart") != 0 \ | |
685 | && !saw_subtract) \ | |
695344c0 | 686 | /* xgettext:c-format */ \ |
d42c267e | 687 | _bfd_error_handler (_("%B(%A): unsafe PID relocation %s at %#Lx (against %s in %s)"), \ |
d4cb0ea0 NC |
688 | input_bfd, input_section, howto->name, \ |
689 | input_section->output_section->vma + input_section->output_offset + rel->r_offset, \ | |
690 | name, sec->name); \ | |
691 | } \ | |
692 | while (0) | |
693 | ||
c7927a3c NC |
694 | /* Opcode relocs are always big endian. Data relocs are bi-endian. */ |
695 | switch (r_type) | |
696 | { | |
697 | case R_RX_NONE: | |
698 | break; | |
699 | ||
700 | case R_RX_RH_RELAX: | |
701 | break; | |
702 | ||
703 | case R_RX_RH_3_PCREL: | |
704 | WARN_REDHAT ("RX_RH_3_PCREL"); | |
705 | RANGE (3, 10); | |
706 | OP (0) &= 0xf8; | |
707 | OP (0) |= relocation & 0x07; | |
708 | break; | |
709 | ||
710 | case R_RX_RH_8_NEG: | |
711 | WARN_REDHAT ("RX_RH_8_NEG"); | |
712 | relocation = - relocation; | |
1a0670f3 | 713 | /* Fall through. */ |
c7927a3c | 714 | case R_RX_DIR8S_PCREL: |
d4cb0ea0 | 715 | UNSAFE_FOR_PID; |
c7927a3c NC |
716 | RANGE (-128, 127); |
717 | OP (0) = relocation; | |
718 | break; | |
719 | ||
720 | case R_RX_DIR8S: | |
d4cb0ea0 | 721 | UNSAFE_FOR_PID; |
c7927a3c NC |
722 | RANGE (-128, 255); |
723 | OP (0) = relocation; | |
724 | break; | |
725 | ||
726 | case R_RX_DIR8U: | |
d4cb0ea0 | 727 | UNSAFE_FOR_PID; |
c7927a3c NC |
728 | RANGE (0, 255); |
729 | OP (0) = relocation; | |
730 | break; | |
731 | ||
732 | case R_RX_RH_16_NEG: | |
733 | WARN_REDHAT ("RX_RH_16_NEG"); | |
734 | relocation = - relocation; | |
1a0670f3 | 735 | /* Fall through. */ |
c7927a3c | 736 | case R_RX_DIR16S_PCREL: |
d4cb0ea0 | 737 | UNSAFE_FOR_PID; |
c7927a3c NC |
738 | RANGE (-32768, 32767); |
739 | #if RX_OPCODE_BIG_ENDIAN | |
740 | #else | |
741 | OP (0) = relocation; | |
742 | OP (1) = relocation >> 8; | |
743 | #endif | |
744 | break; | |
745 | ||
746 | case R_RX_RH_16_OP: | |
747 | WARN_REDHAT ("RX_RH_16_OP"); | |
d4cb0ea0 | 748 | UNSAFE_FOR_PID; |
c7927a3c NC |
749 | RANGE (-32768, 32767); |
750 | #if RX_OPCODE_BIG_ENDIAN | |
751 | OP (1) = relocation; | |
752 | OP (0) = relocation >> 8; | |
753 | #else | |
754 | OP (0) = relocation; | |
755 | OP (1) = relocation >> 8; | |
756 | #endif | |
757 | break; | |
758 | ||
759 | case R_RX_DIR16S: | |
d4cb0ea0 | 760 | UNSAFE_FOR_PID; |
c7927a3c NC |
761 | RANGE (-32768, 65535); |
762 | if (BIGE (output_bfd) && !(input_section->flags & SEC_CODE)) | |
763 | { | |
764 | OP (1) = relocation; | |
765 | OP (0) = relocation >> 8; | |
766 | } | |
767 | else | |
768 | { | |
769 | OP (0) = relocation; | |
770 | OP (1) = relocation >> 8; | |
771 | } | |
772 | break; | |
773 | ||
774 | case R_RX_DIR16U: | |
d4cb0ea0 | 775 | UNSAFE_FOR_PID; |
c7927a3c NC |
776 | RANGE (0, 65536); |
777 | #if RX_OPCODE_BIG_ENDIAN | |
778 | OP (1) = relocation; | |
779 | OP (0) = relocation >> 8; | |
780 | #else | |
781 | OP (0) = relocation; | |
782 | OP (1) = relocation >> 8; | |
783 | #endif | |
784 | break; | |
785 | ||
786 | case R_RX_DIR16: | |
d4cb0ea0 | 787 | UNSAFE_FOR_PID; |
c7927a3c NC |
788 | RANGE (-32768, 65536); |
789 | #if RX_OPCODE_BIG_ENDIAN | |
790 | OP (1) = relocation; | |
791 | OP (0) = relocation >> 8; | |
792 | #else | |
793 | OP (0) = relocation; | |
794 | OP (1) = relocation >> 8; | |
795 | #endif | |
796 | break; | |
797 | ||
798 | case R_RX_DIR16_REV: | |
d4cb0ea0 | 799 | UNSAFE_FOR_PID; |
c7927a3c NC |
800 | RANGE (-32768, 65536); |
801 | #if RX_OPCODE_BIG_ENDIAN | |
802 | OP (0) = relocation; | |
803 | OP (1) = relocation >> 8; | |
804 | #else | |
805 | OP (1) = relocation; | |
806 | OP (0) = relocation >> 8; | |
807 | #endif | |
808 | break; | |
809 | ||
810 | case R_RX_DIR3U_PCREL: | |
811 | RANGE (3, 10); | |
812 | OP (0) &= 0xf8; | |
813 | OP (0) |= relocation & 0x07; | |
814 | break; | |
815 | ||
816 | case R_RX_RH_24_NEG: | |
d4cb0ea0 | 817 | UNSAFE_FOR_PID; |
c7927a3c NC |
818 | WARN_REDHAT ("RX_RH_24_NEG"); |
819 | relocation = - relocation; | |
1a0670f3 | 820 | /* Fall through. */ |
c7927a3c NC |
821 | case R_RX_DIR24S_PCREL: |
822 | RANGE (-0x800000, 0x7fffff); | |
823 | #if RX_OPCODE_BIG_ENDIAN | |
824 | OP (2) = relocation; | |
825 | OP (1) = relocation >> 8; | |
826 | OP (0) = relocation >> 16; | |
827 | #else | |
828 | OP (0) = relocation; | |
829 | OP (1) = relocation >> 8; | |
830 | OP (2) = relocation >> 16; | |
831 | #endif | |
832 | break; | |
833 | ||
834 | case R_RX_RH_24_OP: | |
d4cb0ea0 | 835 | UNSAFE_FOR_PID; |
c7927a3c NC |
836 | WARN_REDHAT ("RX_RH_24_OP"); |
837 | RANGE (-0x800000, 0x7fffff); | |
838 | #if RX_OPCODE_BIG_ENDIAN | |
839 | OP (2) = relocation; | |
840 | OP (1) = relocation >> 8; | |
841 | OP (0) = relocation >> 16; | |
842 | #else | |
843 | OP (0) = relocation; | |
844 | OP (1) = relocation >> 8; | |
845 | OP (2) = relocation >> 16; | |
846 | #endif | |
847 | break; | |
848 | ||
849 | case R_RX_DIR24S: | |
d4cb0ea0 | 850 | UNSAFE_FOR_PID; |
c7927a3c NC |
851 | RANGE (-0x800000, 0x7fffff); |
852 | if (BIGE (output_bfd) && !(input_section->flags & SEC_CODE)) | |
853 | { | |
854 | OP (2) = relocation; | |
855 | OP (1) = relocation >> 8; | |
856 | OP (0) = relocation >> 16; | |
857 | } | |
858 | else | |
859 | { | |
860 | OP (0) = relocation; | |
861 | OP (1) = relocation >> 8; | |
862 | OP (2) = relocation >> 16; | |
863 | } | |
864 | break; | |
865 | ||
866 | case R_RX_RH_24_UNS: | |
d4cb0ea0 | 867 | UNSAFE_FOR_PID; |
c7927a3c NC |
868 | WARN_REDHAT ("RX_RH_24_UNS"); |
869 | RANGE (0, 0xffffff); | |
870 | #if RX_OPCODE_BIG_ENDIAN | |
871 | OP (2) = relocation; | |
872 | OP (1) = relocation >> 8; | |
873 | OP (0) = relocation >> 16; | |
874 | #else | |
875 | OP (0) = relocation; | |
876 | OP (1) = relocation >> 8; | |
877 | OP (2) = relocation >> 16; | |
878 | #endif | |
879 | break; | |
880 | ||
881 | case R_RX_RH_32_NEG: | |
d4cb0ea0 | 882 | UNSAFE_FOR_PID; |
c7927a3c NC |
883 | WARN_REDHAT ("RX_RH_32_NEG"); |
884 | relocation = - relocation; | |
885 | #if RX_OPCODE_BIG_ENDIAN | |
886 | OP (3) = relocation; | |
887 | OP (2) = relocation >> 8; | |
888 | OP (1) = relocation >> 16; | |
889 | OP (0) = relocation >> 24; | |
890 | #else | |
891 | OP (0) = relocation; | |
892 | OP (1) = relocation >> 8; | |
893 | OP (2) = relocation >> 16; | |
894 | OP (3) = relocation >> 24; | |
895 | #endif | |
896 | break; | |
897 | ||
898 | case R_RX_RH_32_OP: | |
d4cb0ea0 | 899 | UNSAFE_FOR_PID; |
c7927a3c NC |
900 | WARN_REDHAT ("RX_RH_32_OP"); |
901 | #if RX_OPCODE_BIG_ENDIAN | |
902 | OP (3) = relocation; | |
903 | OP (2) = relocation >> 8; | |
904 | OP (1) = relocation >> 16; | |
905 | OP (0) = relocation >> 24; | |
906 | #else | |
907 | OP (0) = relocation; | |
908 | OP (1) = relocation >> 8; | |
909 | OP (2) = relocation >> 16; | |
910 | OP (3) = relocation >> 24; | |
911 | #endif | |
912 | break; | |
913 | ||
914 | case R_RX_DIR32: | |
915 | if (BIGE (output_bfd) && !(input_section->flags & SEC_CODE)) | |
916 | { | |
917 | OP (3) = relocation; | |
918 | OP (2) = relocation >> 8; | |
919 | OP (1) = relocation >> 16; | |
920 | OP (0) = relocation >> 24; | |
921 | } | |
922 | else | |
923 | { | |
924 | OP (0) = relocation; | |
925 | OP (1) = relocation >> 8; | |
926 | OP (2) = relocation >> 16; | |
927 | OP (3) = relocation >> 24; | |
928 | } | |
929 | break; | |
930 | ||
931 | case R_RX_DIR32_REV: | |
932 | if (BIGE (output_bfd)) | |
933 | { | |
934 | OP (0) = relocation; | |
935 | OP (1) = relocation >> 8; | |
936 | OP (2) = relocation >> 16; | |
937 | OP (3) = relocation >> 24; | |
938 | } | |
939 | else | |
940 | { | |
941 | OP (3) = relocation; | |
942 | OP (2) = relocation >> 8; | |
943 | OP (1) = relocation >> 16; | |
944 | OP (0) = relocation >> 24; | |
945 | } | |
946 | break; | |
947 | ||
948 | case R_RX_RH_DIFF: | |
949 | { | |
950 | bfd_vma val; | |
951 | WARN_REDHAT ("RX_RH_DIFF"); | |
952 | val = bfd_get_32 (output_bfd, & OP (0)); | |
953 | val -= relocation; | |
954 | bfd_put_32 (output_bfd, val, & OP (0)); | |
955 | } | |
956 | break; | |
957 | ||
958 | case R_RX_RH_GPRELB: | |
959 | WARN_REDHAT ("RX_RH_GPRELB"); | |
1a72702b | 960 | relocation -= get_gp (info, input_bfd, input_section, rel->r_offset); |
c7927a3c NC |
961 | RANGE (0, 65535); |
962 | #if RX_OPCODE_BIG_ENDIAN | |
963 | OP (1) = relocation; | |
964 | OP (0) = relocation >> 8; | |
965 | #else | |
966 | OP (0) = relocation; | |
967 | OP (1) = relocation >> 8; | |
968 | #endif | |
969 | break; | |
970 | ||
971 | case R_RX_RH_GPRELW: | |
972 | WARN_REDHAT ("RX_RH_GPRELW"); | |
1a72702b | 973 | relocation -= get_gp (info, input_bfd, input_section, rel->r_offset); |
c7927a3c NC |
974 | ALIGN (1); |
975 | relocation >>= 1; | |
976 | RANGE (0, 65535); | |
977 | #if RX_OPCODE_BIG_ENDIAN | |
978 | OP (1) = relocation; | |
979 | OP (0) = relocation >> 8; | |
980 | #else | |
981 | OP (0) = relocation; | |
982 | OP (1) = relocation >> 8; | |
983 | #endif | |
984 | break; | |
985 | ||
986 | case R_RX_RH_GPRELL: | |
987 | WARN_REDHAT ("RX_RH_GPRELL"); | |
1a72702b | 988 | relocation -= get_gp (info, input_bfd, input_section, rel->r_offset); |
c7927a3c NC |
989 | ALIGN (3); |
990 | relocation >>= 2; | |
991 | RANGE (0, 65535); | |
992 | #if RX_OPCODE_BIG_ENDIAN | |
993 | OP (1) = relocation; | |
994 | OP (0) = relocation >> 8; | |
995 | #else | |
996 | OP (0) = relocation; | |
997 | OP (1) = relocation >> 8; | |
998 | #endif | |
999 | break; | |
1000 | ||
1001 | /* Internal relocations just for relaxation: */ | |
1002 | case R_RX_RH_ABS5p5B: | |
1003 | RX_STACK_POP (relocation); | |
1004 | RANGE (0, 31); | |
1005 | OP (0) &= 0xf8; | |
1006 | OP (0) |= relocation >> 2; | |
1007 | OP (1) &= 0x77; | |
1008 | OP (1) |= (relocation << 6) & 0x80; | |
1009 | OP (1) |= (relocation << 3) & 0x08; | |
1010 | break; | |
1011 | ||
1012 | case R_RX_RH_ABS5p5W: | |
1013 | RX_STACK_POP (relocation); | |
1014 | RANGE (0, 62); | |
1015 | ALIGN (1); | |
1016 | relocation >>= 1; | |
1017 | OP (0) &= 0xf8; | |
1018 | OP (0) |= relocation >> 2; | |
1019 | OP (1) &= 0x77; | |
1020 | OP (1) |= (relocation << 6) & 0x80; | |
1021 | OP (1) |= (relocation << 3) & 0x08; | |
1022 | break; | |
1023 | ||
1024 | case R_RX_RH_ABS5p5L: | |
1025 | RX_STACK_POP (relocation); | |
1026 | RANGE (0, 124); | |
1027 | ALIGN (3); | |
1028 | relocation >>= 2; | |
1029 | OP (0) &= 0xf8; | |
1030 | OP (0) |= relocation >> 2; | |
1031 | OP (1) &= 0x77; | |
1032 | OP (1) |= (relocation << 6) & 0x80; | |
1033 | OP (1) |= (relocation << 3) & 0x08; | |
1034 | break; | |
1035 | ||
1036 | case R_RX_RH_ABS5p8B: | |
1037 | RX_STACK_POP (relocation); | |
1038 | RANGE (0, 31); | |
1039 | OP (0) &= 0x70; | |
1040 | OP (0) |= (relocation << 3) & 0x80; | |
1041 | OP (0) |= relocation & 0x0f; | |
1042 | break; | |
1043 | ||
1044 | case R_RX_RH_ABS5p8W: | |
1045 | RX_STACK_POP (relocation); | |
1046 | RANGE (0, 62); | |
1047 | ALIGN (1); | |
1048 | relocation >>= 1; | |
1049 | OP (0) &= 0x70; | |
1050 | OP (0) |= (relocation << 3) & 0x80; | |
1051 | OP (0) |= relocation & 0x0f; | |
1052 | break; | |
1053 | ||
1054 | case R_RX_RH_ABS5p8L: | |
1055 | RX_STACK_POP (relocation); | |
1056 | RANGE (0, 124); | |
1057 | ALIGN (3); | |
1058 | relocation >>= 2; | |
1059 | OP (0) &= 0x70; | |
1060 | OP (0) |= (relocation << 3) & 0x80; | |
1061 | OP (0) |= relocation & 0x0f; | |
1062 | break; | |
1063 | ||
1064 | case R_RX_RH_UIMM4p8: | |
1065 | RANGE (0, 15); | |
1066 | OP (0) &= 0x0f; | |
1067 | OP (0) |= relocation << 4; | |
1068 | break; | |
1069 | ||
1070 | case R_RX_RH_UNEG4p8: | |
1071 | RANGE (-15, 0); | |
1072 | OP (0) &= 0x0f; | |
1073 | OP (0) |= (-relocation) << 4; | |
1074 | break; | |
1075 | ||
1076 | /* Complex reloc handling: */ | |
1077 | ||
1078 | case R_RX_ABS32: | |
d4cb0ea0 | 1079 | UNSAFE_FOR_PID; |
c7927a3c NC |
1080 | RX_STACK_POP (relocation); |
1081 | #if RX_OPCODE_BIG_ENDIAN | |
1082 | OP (3) = relocation; | |
1083 | OP (2) = relocation >> 8; | |
1084 | OP (1) = relocation >> 16; | |
1085 | OP (0) = relocation >> 24; | |
1086 | #else | |
1087 | OP (0) = relocation; | |
1088 | OP (1) = relocation >> 8; | |
1089 | OP (2) = relocation >> 16; | |
1090 | OP (3) = relocation >> 24; | |
1091 | #endif | |
1092 | break; | |
1093 | ||
1094 | case R_RX_ABS32_REV: | |
d4cb0ea0 | 1095 | UNSAFE_FOR_PID; |
c7927a3c NC |
1096 | RX_STACK_POP (relocation); |
1097 | #if RX_OPCODE_BIG_ENDIAN | |
1098 | OP (0) = relocation; | |
1099 | OP (1) = relocation >> 8; | |
1100 | OP (2) = relocation >> 16; | |
1101 | OP (3) = relocation >> 24; | |
1102 | #else | |
1103 | OP (3) = relocation; | |
1104 | OP (2) = relocation >> 8; | |
1105 | OP (1) = relocation >> 16; | |
1106 | OP (0) = relocation >> 24; | |
1107 | #endif | |
1108 | break; | |
1109 | ||
1110 | case R_RX_ABS24S_PCREL: | |
1111 | case R_RX_ABS24S: | |
d4cb0ea0 | 1112 | UNSAFE_FOR_PID; |
c7927a3c NC |
1113 | RX_STACK_POP (relocation); |
1114 | RANGE (-0x800000, 0x7fffff); | |
1115 | if (BIGE (output_bfd) && !(input_section->flags & SEC_CODE)) | |
1116 | { | |
1117 | OP (2) = relocation; | |
1118 | OP (1) = relocation >> 8; | |
1119 | OP (0) = relocation >> 16; | |
1120 | } | |
1121 | else | |
1122 | { | |
1123 | OP (0) = relocation; | |
1124 | OP (1) = relocation >> 8; | |
1125 | OP (2) = relocation >> 16; | |
1126 | } | |
1127 | break; | |
1128 | ||
1129 | case R_RX_ABS16: | |
d4cb0ea0 | 1130 | UNSAFE_FOR_PID; |
c7927a3c NC |
1131 | RX_STACK_POP (relocation); |
1132 | RANGE (-32768, 65535); | |
1133 | #if RX_OPCODE_BIG_ENDIAN | |
1134 | OP (1) = relocation; | |
1135 | OP (0) = relocation >> 8; | |
1136 | #else | |
1137 | OP (0) = relocation; | |
1138 | OP (1) = relocation >> 8; | |
1139 | #endif | |
1140 | break; | |
1141 | ||
1142 | case R_RX_ABS16_REV: | |
d4cb0ea0 | 1143 | UNSAFE_FOR_PID; |
c7927a3c NC |
1144 | RX_STACK_POP (relocation); |
1145 | RANGE (-32768, 65535); | |
1146 | #if RX_OPCODE_BIG_ENDIAN | |
1147 | OP (0) = relocation; | |
1148 | OP (1) = relocation >> 8; | |
1149 | #else | |
1150 | OP (1) = relocation; | |
1151 | OP (0) = relocation >> 8; | |
1152 | #endif | |
1153 | break; | |
1154 | ||
1155 | case R_RX_ABS16S_PCREL: | |
1156 | case R_RX_ABS16S: | |
1157 | RX_STACK_POP (relocation); | |
1158 | RANGE (-32768, 32767); | |
1159 | if (BIGE (output_bfd) && !(input_section->flags & SEC_CODE)) | |
1160 | { | |
1161 | OP (1) = relocation; | |
1162 | OP (0) = relocation >> 8; | |
1163 | } | |
1164 | else | |
1165 | { | |
1166 | OP (0) = relocation; | |
1167 | OP (1) = relocation >> 8; | |
1168 | } | |
1169 | break; | |
1170 | ||
1171 | case R_RX_ABS16U: | |
d4cb0ea0 | 1172 | UNSAFE_FOR_PID; |
c7927a3c NC |
1173 | RX_STACK_POP (relocation); |
1174 | RANGE (0, 65536); | |
1175 | #if RX_OPCODE_BIG_ENDIAN | |
1176 | OP (1) = relocation; | |
1177 | OP (0) = relocation >> 8; | |
1178 | #else | |
1179 | OP (0) = relocation; | |
1180 | OP (1) = relocation >> 8; | |
1181 | #endif | |
1182 | break; | |
1183 | ||
1184 | case R_RX_ABS16UL: | |
d4cb0ea0 | 1185 | UNSAFE_FOR_PID; |
c7927a3c NC |
1186 | RX_STACK_POP (relocation); |
1187 | relocation >>= 2; | |
1188 | RANGE (0, 65536); | |
1189 | #if RX_OPCODE_BIG_ENDIAN | |
1190 | OP (1) = relocation; | |
1191 | OP (0) = relocation >> 8; | |
1192 | #else | |
1193 | OP (0) = relocation; | |
1194 | OP (1) = relocation >> 8; | |
1195 | #endif | |
1196 | break; | |
1197 | ||
1198 | case R_RX_ABS16UW: | |
d4cb0ea0 | 1199 | UNSAFE_FOR_PID; |
c7927a3c NC |
1200 | RX_STACK_POP (relocation); |
1201 | relocation >>= 1; | |
1202 | RANGE (0, 65536); | |
1203 | #if RX_OPCODE_BIG_ENDIAN | |
1204 | OP (1) = relocation; | |
1205 | OP (0) = relocation >> 8; | |
1206 | #else | |
1207 | OP (0) = relocation; | |
1208 | OP (1) = relocation >> 8; | |
1209 | #endif | |
1210 | break; | |
1211 | ||
1212 | case R_RX_ABS8: | |
d4cb0ea0 | 1213 | UNSAFE_FOR_PID; |
c7927a3c NC |
1214 | RX_STACK_POP (relocation); |
1215 | RANGE (-128, 255); | |
1216 | OP (0) = relocation; | |
1217 | break; | |
1218 | ||
1219 | case R_RX_ABS8U: | |
d4cb0ea0 | 1220 | UNSAFE_FOR_PID; |
c7927a3c NC |
1221 | RX_STACK_POP (relocation); |
1222 | RANGE (0, 255); | |
1223 | OP (0) = relocation; | |
1224 | break; | |
1225 | ||
1226 | case R_RX_ABS8UL: | |
d4cb0ea0 | 1227 | UNSAFE_FOR_PID; |
c7927a3c NC |
1228 | RX_STACK_POP (relocation); |
1229 | relocation >>= 2; | |
1230 | RANGE (0, 255); | |
1231 | OP (0) = relocation; | |
1232 | break; | |
1233 | ||
1234 | case R_RX_ABS8UW: | |
d4cb0ea0 | 1235 | UNSAFE_FOR_PID; |
c7927a3c NC |
1236 | RX_STACK_POP (relocation); |
1237 | relocation >>= 1; | |
1238 | RANGE (0, 255); | |
1239 | OP (0) = relocation; | |
1240 | break; | |
1241 | ||
c7927a3c | 1242 | case R_RX_ABS8S: |
d4cb0ea0 | 1243 | UNSAFE_FOR_PID; |
1a0670f3 | 1244 | /* Fall through. */ |
d4cb0ea0 | 1245 | case R_RX_ABS8S_PCREL: |
c7927a3c NC |
1246 | RX_STACK_POP (relocation); |
1247 | RANGE (-128, 127); | |
1248 | OP (0) = relocation; | |
1249 | break; | |
1250 | ||
1251 | case R_RX_SYM: | |
1252 | if (r_symndx < symtab_hdr->sh_info) | |
1253 | RX_STACK_PUSH (sec->output_section->vma | |
1254 | + sec->output_offset | |
d4cb0ea0 NC |
1255 | + sym->st_value |
1256 | + rel->r_addend); | |
c7927a3c NC |
1257 | else |
1258 | { | |
1259 | if (h != NULL | |
1260 | && (h->root.type == bfd_link_hash_defined | |
1261 | || h->root.type == bfd_link_hash_defweak)) | |
1262 | RX_STACK_PUSH (h->root.u.def.value | |
1263 | + sec->output_section->vma | |
d4cb0ea0 NC |
1264 | + sec->output_offset |
1265 | + rel->r_addend); | |
c7927a3c NC |
1266 | else |
1267 | _bfd_error_handler (_("Warning: RX_SYM reloc with an unknown symbol")); | |
1268 | } | |
1269 | break; | |
1270 | ||
1271 | case R_RX_OPneg: | |
1272 | { | |
1273 | int32_t tmp; | |
1274 | ||
ee181c72 | 1275 | saw_subtract = TRUE; |
c7927a3c NC |
1276 | RX_STACK_POP (tmp); |
1277 | tmp = - tmp; | |
1278 | RX_STACK_PUSH (tmp); | |
1279 | } | |
1280 | break; | |
1281 | ||
1282 | case R_RX_OPadd: | |
1283 | { | |
1284 | int32_t tmp1, tmp2; | |
1285 | ||
1286 | RX_STACK_POP (tmp1); | |
1287 | RX_STACK_POP (tmp2); | |
1288 | tmp1 += tmp2; | |
1289 | RX_STACK_PUSH (tmp1); | |
1290 | } | |
1291 | break; | |
1292 | ||
1293 | case R_RX_OPsub: | |
1294 | { | |
1295 | int32_t tmp1, tmp2; | |
1296 | ||
d4cb0ea0 | 1297 | saw_subtract = TRUE; |
c7927a3c NC |
1298 | RX_STACK_POP (tmp1); |
1299 | RX_STACK_POP (tmp2); | |
1300 | tmp2 -= tmp1; | |
1301 | RX_STACK_PUSH (tmp2); | |
1302 | } | |
1303 | break; | |
1304 | ||
1305 | case R_RX_OPmul: | |
1306 | { | |
1307 | int32_t tmp1, tmp2; | |
1308 | ||
1309 | RX_STACK_POP (tmp1); | |
1310 | RX_STACK_POP (tmp2); | |
1311 | tmp1 *= tmp2; | |
1312 | RX_STACK_PUSH (tmp1); | |
1313 | } | |
1314 | break; | |
1315 | ||
1316 | case R_RX_OPdiv: | |
1317 | { | |
1318 | int32_t tmp1, tmp2; | |
1319 | ||
1320 | RX_STACK_POP (tmp1); | |
1321 | RX_STACK_POP (tmp2); | |
1322 | tmp1 /= tmp2; | |
1323 | RX_STACK_PUSH (tmp1); | |
1324 | } | |
1325 | break; | |
1326 | ||
1327 | case R_RX_OPshla: | |
1328 | { | |
1329 | int32_t tmp1, tmp2; | |
1330 | ||
1331 | RX_STACK_POP (tmp1); | |
1332 | RX_STACK_POP (tmp2); | |
1333 | tmp1 <<= tmp2; | |
1334 | RX_STACK_PUSH (tmp1); | |
1335 | } | |
1336 | break; | |
1337 | ||
1338 | case R_RX_OPshra: | |
1339 | { | |
1340 | int32_t tmp1, tmp2; | |
1341 | ||
1342 | RX_STACK_POP (tmp1); | |
1343 | RX_STACK_POP (tmp2); | |
1344 | tmp1 >>= tmp2; | |
1345 | RX_STACK_PUSH (tmp1); | |
1346 | } | |
1347 | break; | |
1348 | ||
1349 | case R_RX_OPsctsize: | |
1350 | RX_STACK_PUSH (input_section->size); | |
1351 | break; | |
1352 | ||
1353 | case R_RX_OPscttop: | |
1354 | RX_STACK_PUSH (input_section->output_section->vma); | |
1355 | break; | |
1356 | ||
1357 | case R_RX_OPand: | |
1358 | { | |
1359 | int32_t tmp1, tmp2; | |
1360 | ||
1361 | RX_STACK_POP (tmp1); | |
1362 | RX_STACK_POP (tmp2); | |
1363 | tmp1 &= tmp2; | |
1364 | RX_STACK_PUSH (tmp1); | |
1365 | } | |
1366 | break; | |
1367 | ||
1368 | case R_RX_OPor: | |
1369 | { | |
1370 | int32_t tmp1, tmp2; | |
1371 | ||
1372 | RX_STACK_POP (tmp1); | |
1373 | RX_STACK_POP (tmp2); | |
1374 | tmp1 |= tmp2; | |
1375 | RX_STACK_PUSH (tmp1); | |
1376 | } | |
1377 | break; | |
1378 | ||
1379 | case R_RX_OPxor: | |
1380 | { | |
1381 | int32_t tmp1, tmp2; | |
1382 | ||
1383 | RX_STACK_POP (tmp1); | |
1384 | RX_STACK_POP (tmp2); | |
1385 | tmp1 ^= tmp2; | |
1386 | RX_STACK_PUSH (tmp1); | |
1387 | } | |
1388 | break; | |
1389 | ||
1390 | case R_RX_OPnot: | |
1391 | { | |
1392 | int32_t tmp; | |
1393 | ||
1394 | RX_STACK_POP (tmp); | |
1395 | tmp = ~ tmp; | |
1396 | RX_STACK_PUSH (tmp); | |
1397 | } | |
1398 | break; | |
1399 | ||
1400 | case R_RX_OPmod: | |
1401 | { | |
1402 | int32_t tmp1, tmp2; | |
1403 | ||
1404 | RX_STACK_POP (tmp1); | |
1405 | RX_STACK_POP (tmp2); | |
1406 | tmp1 %= tmp2; | |
1407 | RX_STACK_PUSH (tmp1); | |
1408 | } | |
1409 | break; | |
1410 | ||
1411 | case R_RX_OPromtop: | |
1a72702b | 1412 | RX_STACK_PUSH (get_romstart (info, input_bfd, input_section, rel->r_offset)); |
c7927a3c NC |
1413 | break; |
1414 | ||
1415 | case R_RX_OPramtop: | |
1a72702b | 1416 | RX_STACK_PUSH (get_ramstart (info, input_bfd, input_section, rel->r_offset)); |
c7927a3c NC |
1417 | break; |
1418 | ||
1419 | default: | |
1420 | r = bfd_reloc_notsupported; | |
1421 | break; | |
1422 | } | |
1423 | ||
1424 | if (r != bfd_reloc_ok) | |
1425 | { | |
1426 | const char * msg = NULL; | |
1427 | ||
1428 | switch (r) | |
1429 | { | |
1430 | case bfd_reloc_overflow: | |
1431 | /* Catch the case of a missing function declaration | |
1432 | and emit a more helpful error message. */ | |
1433 | if (r_type == R_RX_DIR24S_PCREL) | |
695344c0 | 1434 | /* xgettext:c-format */ |
c7927a3c NC |
1435 | msg = _("%B(%A): error: call to undefined function '%s'"); |
1436 | else | |
1a72702b | 1437 | (*info->callbacks->reloc_overflow) |
c7927a3c NC |
1438 | (info, (h ? &h->root : NULL), name, howto->name, (bfd_vma) 0, |
1439 | input_bfd, input_section, rel->r_offset); | |
1440 | break; | |
1441 | ||
1442 | case bfd_reloc_undefined: | |
1a72702b AM |
1443 | (*info->callbacks->undefined_symbol) |
1444 | (info, name, input_bfd, input_section, rel->r_offset, TRUE); | |
c7927a3c NC |
1445 | break; |
1446 | ||
1447 | case bfd_reloc_other: | |
695344c0 | 1448 | /* xgettext:c-format */ |
c7927a3c NC |
1449 | msg = _("%B(%A): warning: unaligned access to symbol '%s' in the small data area"); |
1450 | break; | |
1451 | ||
1452 | case bfd_reloc_outofrange: | |
695344c0 | 1453 | /* xgettext:c-format */ |
c7927a3c NC |
1454 | msg = _("%B(%A): internal error: out of range error"); |
1455 | break; | |
1456 | ||
1457 | case bfd_reloc_notsupported: | |
695344c0 | 1458 | /* xgettext:c-format */ |
c7927a3c NC |
1459 | msg = _("%B(%A): internal error: unsupported relocation error"); |
1460 | break; | |
1461 | ||
1462 | case bfd_reloc_dangerous: | |
695344c0 | 1463 | /* xgettext:c-format */ |
c7927a3c NC |
1464 | msg = _("%B(%A): internal error: dangerous relocation"); |
1465 | break; | |
1466 | ||
1467 | default: | |
695344c0 | 1468 | /* xgettext:c-format */ |
c7927a3c NC |
1469 | msg = _("%B(%A): internal error: unknown error"); |
1470 | break; | |
1471 | } | |
1472 | ||
1473 | if (msg) | |
1474 | _bfd_error_handler (msg, input_bfd, input_section, name); | |
c7927a3c NC |
1475 | } |
1476 | } | |
1477 | ||
1478 | return TRUE; | |
1479 | } | |
1480 | \f | |
1481 | /* Relaxation Support. */ | |
1482 | ||
1483 | /* Progression of relocations from largest operand size to smallest | |
1484 | operand size. */ | |
1485 | ||
1486 | static int | |
1487 | next_smaller_reloc (int r) | |
1488 | { | |
1489 | switch (r) | |
1490 | { | |
1491 | case R_RX_DIR32: return R_RX_DIR24S; | |
1492 | case R_RX_DIR24S: return R_RX_DIR16S; | |
1493 | case R_RX_DIR16S: return R_RX_DIR8S; | |
1494 | case R_RX_DIR8S: return R_RX_NONE; | |
1495 | ||
1496 | case R_RX_DIR16: return R_RX_DIR8; | |
1497 | case R_RX_DIR8: return R_RX_NONE; | |
1498 | ||
1499 | case R_RX_DIR16U: return R_RX_DIR8U; | |
1500 | case R_RX_DIR8U: return R_RX_NONE; | |
1501 | ||
1502 | case R_RX_DIR24S_PCREL: return R_RX_DIR16S_PCREL; | |
1503 | case R_RX_DIR16S_PCREL: return R_RX_DIR8S_PCREL; | |
1504 | case R_RX_DIR8S_PCREL: return R_RX_DIR3U_PCREL; | |
1505 | ||
1506 | case R_RX_DIR16UL: return R_RX_DIR8UL; | |
1507 | case R_RX_DIR8UL: return R_RX_NONE; | |
1508 | case R_RX_DIR16UW: return R_RX_DIR8UW; | |
1509 | case R_RX_DIR8UW: return R_RX_NONE; | |
1510 | ||
1511 | case R_RX_RH_32_OP: return R_RX_RH_24_OP; | |
1512 | case R_RX_RH_24_OP: return R_RX_RH_16_OP; | |
1513 | case R_RX_RH_16_OP: return R_RX_DIR8; | |
1514 | ||
1515 | case R_RX_ABS32: return R_RX_ABS24S; | |
1516 | case R_RX_ABS24S: return R_RX_ABS16S; | |
1517 | case R_RX_ABS16: return R_RX_ABS8; | |
1518 | case R_RX_ABS16U: return R_RX_ABS8U; | |
1519 | case R_RX_ABS16S: return R_RX_ABS8S; | |
1520 | case R_RX_ABS8: return R_RX_NONE; | |
1521 | case R_RX_ABS8U: return R_RX_NONE; | |
1522 | case R_RX_ABS8S: return R_RX_NONE; | |
1523 | case R_RX_ABS24S_PCREL: return R_RX_ABS16S_PCREL; | |
1524 | case R_RX_ABS16S_PCREL: return R_RX_ABS8S_PCREL; | |
1525 | case R_RX_ABS8S_PCREL: return R_RX_NONE; | |
1526 | case R_RX_ABS16UL: return R_RX_ABS8UL; | |
1527 | case R_RX_ABS16UW: return R_RX_ABS8UW; | |
1528 | case R_RX_ABS8UL: return R_RX_NONE; | |
1529 | case R_RX_ABS8UW: return R_RX_NONE; | |
1530 | } | |
1531 | return r; | |
1532 | }; | |
1533 | ||
1534 | /* Delete some bytes from a section while relaxing. */ | |
1535 | ||
1536 | static bfd_boolean | |
1537 | elf32_rx_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, int count, | |
5ee4a06a NC |
1538 | Elf_Internal_Rela *alignment_rel, int force_snip, |
1539 | Elf_Internal_Rela *irelstart) | |
c7927a3c NC |
1540 | { |
1541 | Elf_Internal_Shdr * symtab_hdr; | |
07d6d2b8 AM |
1542 | unsigned int sec_shndx; |
1543 | bfd_byte * contents; | |
c7927a3c NC |
1544 | Elf_Internal_Rela * irel; |
1545 | Elf_Internal_Rela * irelend; | |
c7927a3c NC |
1546 | Elf_Internal_Sym * isym; |
1547 | Elf_Internal_Sym * isymend; | |
07d6d2b8 AM |
1548 | bfd_vma toaddr; |
1549 | unsigned int symcount; | |
c7927a3c NC |
1550 | struct elf_link_hash_entry ** sym_hashes; |
1551 | struct elf_link_hash_entry ** end_hashes; | |
1552 | ||
1553 | if (!alignment_rel) | |
1554 | force_snip = 1; | |
1555 | ||
1556 | sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec); | |
1557 | ||
1558 | contents = elf_section_data (sec)->this_hdr.contents; | |
1559 | ||
1560 | /* The deletion must stop at the next alignment boundary, if | |
1561 | ALIGNMENT_REL is non-NULL. */ | |
c7927a3c NC |
1562 | toaddr = sec->size; |
1563 | if (alignment_rel) | |
1564 | toaddr = alignment_rel->r_offset; | |
1565 | ||
07d6d2b8 | 1566 | BFD_ASSERT (toaddr > addr); |
9c761a55 | 1567 | |
c7927a3c NC |
1568 | /* Actually delete the bytes. */ |
1569 | memmove (contents + addr, contents + addr + count, | |
1570 | (size_t) (toaddr - addr - count)); | |
1571 | ||
1572 | /* If we don't have an alignment marker to worry about, we can just | |
1573 | shrink the section. Otherwise, we have to fill in the newly | |
1574 | created gap with NOP insns (0x03). */ | |
1575 | if (force_snip) | |
1576 | sec->size -= count; | |
1577 | else | |
1578 | memset (contents + toaddr - count, 0x03, count); | |
1579 | ||
5ee4a06a NC |
1580 | irel = irelstart; |
1581 | BFD_ASSERT (irel != NULL || sec->reloc_count == 0); | |
1582 | irelend = irel + sec->reloc_count; | |
1583 | ||
c7927a3c | 1584 | /* Adjust all the relocs. */ |
9c761a55 | 1585 | for (; irel < irelend; irel++) |
c7927a3c NC |
1586 | { |
1587 | /* Get the new reloc address. */ | |
1588 | if (irel->r_offset > addr | |
1589 | && (irel->r_offset < toaddr | |
1590 | || (force_snip && irel->r_offset == toaddr))) | |
1591 | irel->r_offset -= count; | |
1592 | ||
1593 | /* If we see an ALIGN marker at the end of the gap, we move it | |
1594 | to the beginning of the gap, since marking these gaps is what | |
1595 | they're for. */ | |
1596 | if (irel->r_offset == toaddr | |
1597 | && ELF32_R_TYPE (irel->r_info) == R_RX_RH_RELAX | |
1598 | && irel->r_addend & RX_RELAXA_ALIGN) | |
1599 | irel->r_offset -= count; | |
1600 | } | |
1601 | ||
1602 | /* Adjust the local symbols defined in this section. */ | |
1603 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
1604 | isym = (Elf_Internal_Sym *) symtab_hdr->contents; | |
1605 | isymend = isym + symtab_hdr->sh_info; | |
1606 | ||
1607 | for (; isym < isymend; isym++) | |
1608 | { | |
1609 | /* If the symbol is in the range of memory we just moved, we | |
1610 | have to adjust its value. */ | |
1611 | if (isym->st_shndx == sec_shndx | |
1612 | && isym->st_value > addr | |
1613 | && isym->st_value < toaddr) | |
1614 | isym->st_value -= count; | |
1615 | ||
1616 | /* If the symbol *spans* the bytes we just deleted (i.e. it's | |
1617 | *end* is in the moved bytes but it's *start* isn't), then we | |
1618 | must adjust its size. */ | |
1619 | if (isym->st_shndx == sec_shndx | |
1620 | && isym->st_value < addr | |
1621 | && isym->st_value + isym->st_size > addr | |
1622 | && isym->st_value + isym->st_size < toaddr) | |
1623 | isym->st_size -= count; | |
1624 | } | |
1625 | ||
1626 | /* Now adjust the global symbols defined in this section. */ | |
1627 | symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym) | |
1628 | - symtab_hdr->sh_info); | |
1629 | sym_hashes = elf_sym_hashes (abfd); | |
1630 | end_hashes = sym_hashes + symcount; | |
1631 | ||
1632 | for (; sym_hashes < end_hashes; sym_hashes++) | |
1633 | { | |
1634 | struct elf_link_hash_entry *sym_hash = *sym_hashes; | |
1635 | ||
1636 | if ((sym_hash->root.type == bfd_link_hash_defined | |
1637 | || sym_hash->root.type == bfd_link_hash_defweak) | |
1638 | && sym_hash->root.u.def.section == sec) | |
1639 | { | |
1640 | /* As above, adjust the value if needed. */ | |
1641 | if (sym_hash->root.u.def.value > addr | |
1642 | && sym_hash->root.u.def.value < toaddr) | |
1643 | sym_hash->root.u.def.value -= count; | |
1644 | ||
1645 | /* As above, adjust the size if needed. */ | |
1646 | if (sym_hash->root.u.def.value < addr | |
1647 | && sym_hash->root.u.def.value + sym_hash->size > addr | |
1648 | && sym_hash->root.u.def.value + sym_hash->size < toaddr) | |
1649 | sym_hash->size -= count; | |
1650 | } | |
1651 | } | |
1652 | ||
1653 | return TRUE; | |
1654 | } | |
1655 | ||
1656 | /* Used to sort relocs by address. If relocs have the same address, | |
1657 | we maintain their relative order, except that R_RX_RH_RELAX | |
1658 | alignment relocs must be the first reloc for any given address. */ | |
1659 | ||
1660 | static void | |
1661 | reloc_bubblesort (Elf_Internal_Rela * r, int count) | |
1662 | { | |
1663 | int i; | |
1664 | bfd_boolean again; | |
1665 | bfd_boolean swappit; | |
1666 | ||
1667 | /* This is almost a classic bubblesort. It's the slowest sort, but | |
1668 | we're taking advantage of the fact that the relocations are | |
1669 | mostly in order already (the assembler emits them that way) and | |
1670 | we need relocs with the same address to remain in the same | |
1671 | relative order. */ | |
1672 | again = TRUE; | |
1673 | while (again) | |
1674 | { | |
1675 | again = FALSE; | |
1676 | for (i = 0; i < count - 1; i ++) | |
1677 | { | |
1678 | if (r[i].r_offset > r[i + 1].r_offset) | |
1679 | swappit = TRUE; | |
1680 | else if (r[i].r_offset < r[i + 1].r_offset) | |
1681 | swappit = FALSE; | |
1682 | else if (ELF32_R_TYPE (r[i + 1].r_info) == R_RX_RH_RELAX | |
1683 | && (r[i + 1].r_addend & RX_RELAXA_ALIGN)) | |
1684 | swappit = TRUE; | |
1685 | else if (ELF32_R_TYPE (r[i + 1].r_info) == R_RX_RH_RELAX | |
1686 | && (r[i + 1].r_addend & RX_RELAXA_ELIGN) | |
1687 | && !(ELF32_R_TYPE (r[i].r_info) == R_RX_RH_RELAX | |
1688 | && (r[i].r_addend & RX_RELAXA_ALIGN))) | |
1689 | swappit = TRUE; | |
1690 | else | |
1691 | swappit = FALSE; | |
1692 | ||
1693 | if (swappit) | |
1694 | { | |
1695 | Elf_Internal_Rela tmp; | |
1696 | ||
1697 | tmp = r[i]; | |
1698 | r[i] = r[i + 1]; | |
1699 | r[i + 1] = tmp; | |
1700 | /* If we do move a reloc back, re-scan to see if it | |
1701 | needs to be moved even further back. This avoids | |
1702 | most of the O(n^2) behavior for our cases. */ | |
1703 | if (i > 0) | |
1704 | i -= 2; | |
1705 | again = TRUE; | |
1706 | } | |
1707 | } | |
1708 | } | |
1709 | } | |
1710 | ||
1711 | ||
1712 | #define OFFSET_FOR_RELOC(rel, lrel, scale) \ | |
1713 | rx_offset_for_reloc (abfd, rel + 1, symtab_hdr, shndx_buf, intsyms, \ | |
1714 | lrel, abfd, sec, link_info, scale) | |
1715 | ||
1716 | static bfd_vma | |
07d6d2b8 | 1717 | rx_offset_for_reloc (bfd * abfd, |
c7927a3c NC |
1718 | Elf_Internal_Rela * rel, |
1719 | Elf_Internal_Shdr * symtab_hdr, | |
c7e2358a | 1720 | Elf_External_Sym_Shndx * shndx_buf ATTRIBUTE_UNUSED, |
07d6d2b8 | 1721 | Elf_Internal_Sym * intsyms, |
c7927a3c | 1722 | Elf_Internal_Rela ** lrel, |
07d6d2b8 AM |
1723 | bfd * input_bfd, |
1724 | asection * input_section, | |
c7927a3c | 1725 | struct bfd_link_info * info, |
07d6d2b8 | 1726 | int * scale) |
c7927a3c NC |
1727 | { |
1728 | bfd_vma symval; | |
1729 | bfd_reloc_status_type r; | |
1730 | ||
1731 | *scale = 1; | |
1732 | ||
1733 | /* REL is the first of 1..N relocations. We compute the symbol | |
1734 | value for each relocation, then combine them if needed. LREL | |
1735 | gets a pointer to the last relocation used. */ | |
1736 | while (1) | |
1737 | { | |
1738 | int32_t tmp1, tmp2; | |
1739 | ||
1740 | /* Get the value of the symbol referred to by the reloc. */ | |
1741 | if (ELF32_R_SYM (rel->r_info) < symtab_hdr->sh_info) | |
1742 | { | |
1743 | /* A local symbol. */ | |
1744 | Elf_Internal_Sym *isym; | |
c7927a3c NC |
1745 | asection *ssec; |
1746 | ||
1747 | isym = intsyms + ELF32_R_SYM (rel->r_info); | |
1748 | ||
1749 | if (isym->st_shndx == SHN_UNDEF) | |
1750 | ssec = bfd_und_section_ptr; | |
1751 | else if (isym->st_shndx == SHN_ABS) | |
1752 | ssec = bfd_abs_section_ptr; | |
1753 | else if (isym->st_shndx == SHN_COMMON) | |
1754 | ssec = bfd_com_section_ptr; | |
1755 | else | |
1756 | ssec = bfd_section_from_elf_index (abfd, | |
1757 | isym->st_shndx); | |
1758 | ||
c7927a3c NC |
1759 | /* Initial symbol value. */ |
1760 | symval = isym->st_value; | |
1761 | ||
1762 | /* GAS may have made this symbol relative to a section, in | |
1763 | which case, we have to add the addend to find the | |
1764 | symbol. */ | |
1765 | if (ELF_ST_TYPE (isym->st_info) == STT_SECTION) | |
1766 | symval += rel->r_addend; | |
1767 | ||
1768 | if (ssec) | |
1769 | { | |
1770 | if ((ssec->flags & SEC_MERGE) | |
dbaa2011 | 1771 | && ssec->sec_info_type == SEC_INFO_TYPE_MERGE) |
c7927a3c NC |
1772 | symval = _bfd_merged_section_offset (abfd, & ssec, |
1773 | elf_section_data (ssec)->sec_info, | |
1774 | symval); | |
1775 | } | |
1776 | ||
1777 | /* Now make the offset relative to where the linker is putting it. */ | |
1778 | if (ssec) | |
1779 | symval += | |
1780 | ssec->output_section->vma + ssec->output_offset; | |
1781 | ||
1782 | symval += rel->r_addend; | |
1783 | } | |
1784 | else | |
1785 | { | |
1786 | unsigned long indx; | |
1787 | struct elf_link_hash_entry * h; | |
1788 | ||
1789 | /* An external symbol. */ | |
1790 | indx = ELF32_R_SYM (rel->r_info) - symtab_hdr->sh_info; | |
1791 | h = elf_sym_hashes (abfd)[indx]; | |
1792 | BFD_ASSERT (h != NULL); | |
1793 | ||
1794 | if (h->root.type != bfd_link_hash_defined | |
1795 | && h->root.type != bfd_link_hash_defweak) | |
1796 | { | |
1797 | /* This appears to be a reference to an undefined | |
1798 | symbol. Just ignore it--it will be caught by the | |
1799 | regular reloc processing. */ | |
1800 | if (lrel) | |
1801 | *lrel = rel; | |
1802 | return 0; | |
1803 | } | |
1804 | ||
1805 | symval = (h->root.u.def.value | |
1806 | + h->root.u.def.section->output_section->vma | |
1807 | + h->root.u.def.section->output_offset); | |
1808 | ||
1809 | symval += rel->r_addend; | |
1810 | } | |
1811 | ||
1812 | switch (ELF32_R_TYPE (rel->r_info)) | |
1813 | { | |
1814 | case R_RX_SYM: | |
1815 | RX_STACK_PUSH (symval); | |
1816 | break; | |
1817 | ||
1818 | case R_RX_OPneg: | |
1819 | RX_STACK_POP (tmp1); | |
1820 | tmp1 = - tmp1; | |
1821 | RX_STACK_PUSH (tmp1); | |
1822 | break; | |
1823 | ||
1824 | case R_RX_OPadd: | |
1825 | RX_STACK_POP (tmp1); | |
1826 | RX_STACK_POP (tmp2); | |
1827 | tmp1 += tmp2; | |
1828 | RX_STACK_PUSH (tmp1); | |
1829 | break; | |
1830 | ||
1831 | case R_RX_OPsub: | |
1832 | RX_STACK_POP (tmp1); | |
1833 | RX_STACK_POP (tmp2); | |
1834 | tmp2 -= tmp1; | |
1835 | RX_STACK_PUSH (tmp2); | |
1836 | break; | |
1837 | ||
1838 | case R_RX_OPmul: | |
1839 | RX_STACK_POP (tmp1); | |
1840 | RX_STACK_POP (tmp2); | |
1841 | tmp1 *= tmp2; | |
1842 | RX_STACK_PUSH (tmp1); | |
1843 | break; | |
1844 | ||
1845 | case R_RX_OPdiv: | |
1846 | RX_STACK_POP (tmp1); | |
1847 | RX_STACK_POP (tmp2); | |
1848 | tmp1 /= tmp2; | |
1849 | RX_STACK_PUSH (tmp1); | |
1850 | break; | |
1851 | ||
1852 | case R_RX_OPshla: | |
1853 | RX_STACK_POP (tmp1); | |
1854 | RX_STACK_POP (tmp2); | |
1855 | tmp1 <<= tmp2; | |
1856 | RX_STACK_PUSH (tmp1); | |
1857 | break; | |
1858 | ||
1859 | case R_RX_OPshra: | |
1860 | RX_STACK_POP (tmp1); | |
1861 | RX_STACK_POP (tmp2); | |
1862 | tmp1 >>= tmp2; | |
1863 | RX_STACK_PUSH (tmp1); | |
1864 | break; | |
1865 | ||
1866 | case R_RX_OPsctsize: | |
1867 | RX_STACK_PUSH (input_section->size); | |
1868 | break; | |
1869 | ||
1870 | case R_RX_OPscttop: | |
1871 | RX_STACK_PUSH (input_section->output_section->vma); | |
1872 | break; | |
1873 | ||
1874 | case R_RX_OPand: | |
1875 | RX_STACK_POP (tmp1); | |
1876 | RX_STACK_POP (tmp2); | |
1877 | tmp1 &= tmp2; | |
1878 | RX_STACK_PUSH (tmp1); | |
1879 | break; | |
1880 | ||
1881 | case R_RX_OPor: | |
1882 | RX_STACK_POP (tmp1); | |
1883 | RX_STACK_POP (tmp2); | |
1884 | tmp1 |= tmp2; | |
1885 | RX_STACK_PUSH (tmp1); | |
1886 | break; | |
1887 | ||
1888 | case R_RX_OPxor: | |
1889 | RX_STACK_POP (tmp1); | |
1890 | RX_STACK_POP (tmp2); | |
1891 | tmp1 ^= tmp2; | |
1892 | RX_STACK_PUSH (tmp1); | |
1893 | break; | |
1894 | ||
1895 | case R_RX_OPnot: | |
1896 | RX_STACK_POP (tmp1); | |
1897 | tmp1 = ~ tmp1; | |
1898 | RX_STACK_PUSH (tmp1); | |
1899 | break; | |
1900 | ||
1901 | case R_RX_OPmod: | |
1902 | RX_STACK_POP (tmp1); | |
1903 | RX_STACK_POP (tmp2); | |
1904 | tmp1 %= tmp2; | |
1905 | RX_STACK_PUSH (tmp1); | |
1906 | break; | |
1907 | ||
1908 | case R_RX_OPromtop: | |
1a72702b | 1909 | RX_STACK_PUSH (get_romstart (info, input_bfd, input_section, rel->r_offset)); |
c7927a3c NC |
1910 | break; |
1911 | ||
1912 | case R_RX_OPramtop: | |
1a72702b | 1913 | RX_STACK_PUSH (get_ramstart (info, input_bfd, input_section, rel->r_offset)); |
c7927a3c NC |
1914 | break; |
1915 | ||
1916 | case R_RX_DIR16UL: | |
1917 | case R_RX_DIR8UL: | |
1918 | case R_RX_ABS16UL: | |
1919 | case R_RX_ABS8UL: | |
1920 | if (rx_stack_top) | |
1921 | RX_STACK_POP (symval); | |
1922 | if (lrel) | |
1923 | *lrel = rel; | |
1924 | *scale = 4; | |
1925 | return symval; | |
1926 | ||
1927 | case R_RX_DIR16UW: | |
1928 | case R_RX_DIR8UW: | |
1929 | case R_RX_ABS16UW: | |
1930 | case R_RX_ABS8UW: | |
1931 | if (rx_stack_top) | |
1932 | RX_STACK_POP (symval); | |
1933 | if (lrel) | |
1934 | *lrel = rel; | |
1935 | *scale = 2; | |
1936 | return symval; | |
1937 | ||
1938 | default: | |
1939 | if (rx_stack_top) | |
1940 | RX_STACK_POP (symval); | |
1941 | if (lrel) | |
1942 | *lrel = rel; | |
1943 | return symval; | |
1944 | } | |
1945 | ||
1946 | rel ++; | |
1947 | } | |
1a72702b AM |
1948 | /* FIXME. */ |
1949 | (void) r; | |
c7927a3c NC |
1950 | } |
1951 | ||
1952 | static void | |
1953 | move_reloc (Elf_Internal_Rela * irel, Elf_Internal_Rela * srel, int delta) | |
1954 | { | |
1955 | bfd_vma old_offset = srel->r_offset; | |
1956 | ||
1957 | irel ++; | |
1958 | while (irel <= srel) | |
1959 | { | |
1960 | if (irel->r_offset == old_offset) | |
1961 | irel->r_offset += delta; | |
1962 | irel ++; | |
1963 | } | |
1964 | } | |
1965 | ||
1966 | /* Relax one section. */ | |
1967 | ||
1968 | static bfd_boolean | |
07d6d2b8 AM |
1969 | elf32_rx_relax_section (bfd * abfd, |
1970 | asection * sec, | |
c7927a3c | 1971 | struct bfd_link_info * link_info, |
07d6d2b8 AM |
1972 | bfd_boolean * again, |
1973 | bfd_boolean allow_pcrel3) | |
c7927a3c NC |
1974 | { |
1975 | Elf_Internal_Shdr * symtab_hdr; | |
1976 | Elf_Internal_Shdr * shndx_hdr; | |
1977 | Elf_Internal_Rela * internal_relocs; | |
c7927a3c NC |
1978 | Elf_Internal_Rela * irel; |
1979 | Elf_Internal_Rela * srel; | |
1980 | Elf_Internal_Rela * irelend; | |
1981 | Elf_Internal_Rela * next_alignment; | |
1982 | Elf_Internal_Rela * prev_alignment; | |
07d6d2b8 AM |
1983 | bfd_byte * contents = NULL; |
1984 | bfd_byte * free_contents = NULL; | |
c7927a3c NC |
1985 | Elf_Internal_Sym * intsyms = NULL; |
1986 | Elf_Internal_Sym * free_intsyms = NULL; | |
1987 | Elf_External_Sym_Shndx * shndx_buf = NULL; | |
1988 | bfd_vma pc; | |
1989 | bfd_vma sec_start; | |
c7927a3c NC |
1990 | bfd_vma symval = 0; |
1991 | int pcrel = 0; | |
1992 | int code = 0; | |
1993 | int section_alignment_glue; | |
1994 | /* how much to scale the relocation by - 1, 2, or 4. */ | |
1995 | int scale; | |
1996 | ||
1997 | /* Assume nothing changes. */ | |
1998 | *again = FALSE; | |
1999 | ||
2000 | /* We don't have to do anything for a relocatable link, if | |
2001 | this section does not have relocs, or if this is not a | |
2002 | code section. */ | |
0e1862bb | 2003 | if (bfd_link_relocatable (link_info) |
c7927a3c NC |
2004 | || (sec->flags & SEC_RELOC) == 0 |
2005 | || sec->reloc_count == 0 | |
2006 | || (sec->flags & SEC_CODE) == 0) | |
2007 | return TRUE; | |
2008 | ||
6a40cf0c NC |
2009 | symtab_hdr = & elf_symtab_hdr (abfd); |
2010 | if (elf_symtab_shndx_list (abfd)) | |
2011 | shndx_hdr = & elf_symtab_shndx_list (abfd)->hdr; | |
2012 | else | |
2013 | shndx_hdr = NULL; | |
c7927a3c NC |
2014 | |
2015 | sec_start = sec->output_section->vma + sec->output_offset; | |
c7927a3c NC |
2016 | |
2017 | /* Get the section contents. */ | |
2018 | if (elf_section_data (sec)->this_hdr.contents != NULL) | |
2019 | contents = elf_section_data (sec)->this_hdr.contents; | |
2020 | /* Go get them off disk. */ | |
2021 | else | |
2022 | { | |
2023 | if (! bfd_malloc_and_get_section (abfd, sec, &contents)) | |
2024 | goto error_return; | |
2025 | elf_section_data (sec)->this_hdr.contents = contents; | |
2026 | } | |
2027 | ||
2028 | /* Read this BFD's symbols. */ | |
2029 | /* Get cached copy if it exists. */ | |
2030 | if (symtab_hdr->contents != NULL) | |
2031 | intsyms = (Elf_Internal_Sym *) symtab_hdr->contents; | |
2032 | else | |
2033 | { | |
2034 | intsyms = bfd_elf_get_elf_syms (abfd, symtab_hdr, symtab_hdr->sh_info, 0, NULL, NULL, NULL); | |
2035 | symtab_hdr->contents = (bfd_byte *) intsyms; | |
2036 | } | |
2037 | ||
6a40cf0c | 2038 | if (shndx_hdr && shndx_hdr->sh_size != 0) |
c7927a3c NC |
2039 | { |
2040 | bfd_size_type amt; | |
2041 | ||
2042 | amt = symtab_hdr->sh_info; | |
2043 | amt *= sizeof (Elf_External_Sym_Shndx); | |
2044 | shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt); | |
2045 | if (shndx_buf == NULL) | |
2046 | goto error_return; | |
2047 | if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0 | |
2c3fc389 | 2048 | || bfd_bread (shndx_buf, amt, abfd) != amt) |
c7927a3c NC |
2049 | goto error_return; |
2050 | shndx_hdr->contents = (bfd_byte *) shndx_buf; | |
2051 | } | |
2052 | ||
2053 | /* Get a copy of the native relocations. */ | |
5ee4a06a NC |
2054 | /* Note - we ignore the setting of link_info->keep_memory when reading |
2055 | in these relocs. We have to maintain a permanent copy of the relocs | |
2056 | because we are going to walk over them multiple times, adjusting them | |
2057 | as bytes are deleted from the section, and with this relaxation | |
2058 | function itself being called multiple times on the same section... */ | |
2059 | internal_relocs = _bfd_elf_link_read_relocs | |
2060 | (abfd, sec, NULL, (Elf_Internal_Rela *) NULL, TRUE); | |
c7927a3c NC |
2061 | if (internal_relocs == NULL) |
2062 | goto error_return; | |
c7927a3c NC |
2063 | |
2064 | /* The RL_ relocs must be just before the operand relocs they go | |
2065 | with, so we must sort them to guarantee this. We use bubblesort | |
2066 | instead of qsort so we can guarantee that relocs with the same | |
2067 | address remain in the same relative order. */ | |
2068 | reloc_bubblesort (internal_relocs, sec->reloc_count); | |
2069 | ||
2070 | /* Walk through them looking for relaxing opportunities. */ | |
2071 | irelend = internal_relocs + sec->reloc_count; | |
2072 | ||
2073 | /* This will either be NULL or a pointer to the next alignment | |
2074 | relocation. */ | |
2075 | next_alignment = internal_relocs; | |
2076 | /* This will be the previous alignment, although at first it points | |
2077 | to the first real relocation. */ | |
2078 | prev_alignment = internal_relocs; | |
2079 | ||
2080 | /* We calculate worst case shrinkage caused by alignment directives. | |
2081 | No fool-proof, but better than either ignoring the problem or | |
2082 | doing heavy duty analysis of all the alignment markers in all | |
2083 | input sections. */ | |
2084 | section_alignment_glue = 0; | |
2085 | for (irel = internal_relocs; irel < irelend; irel++) | |
2086 | if (ELF32_R_TYPE (irel->r_info) == R_RX_RH_RELAX | |
2087 | && irel->r_addend & RX_RELAXA_ALIGN) | |
2088 | { | |
2089 | int this_glue = 1 << (irel->r_addend & RX_RELAXA_ANUM); | |
2090 | ||
2091 | if (section_alignment_glue < this_glue) | |
2092 | section_alignment_glue = this_glue; | |
2093 | } | |
2094 | /* Worst case is all 0..N alignments, in order, causing 2*N-1 byte | |
2095 | shrinkage. */ | |
2096 | section_alignment_glue *= 2; | |
2097 | ||
2098 | for (irel = internal_relocs; irel < irelend; irel++) | |
2099 | { | |
2100 | unsigned char *insn; | |
2101 | int nrelocs; | |
2102 | ||
2103 | /* The insns we care about are all marked with one of these. */ | |
2104 | if (ELF32_R_TYPE (irel->r_info) != R_RX_RH_RELAX) | |
2105 | continue; | |
2106 | ||
2107 | if (irel->r_addend & RX_RELAXA_ALIGN | |
2108 | || next_alignment == internal_relocs) | |
2109 | { | |
2110 | /* When we delete bytes, we need to maintain all the alignments | |
2111 | indicated. In addition, we need to be careful about relaxing | |
2112 | jumps across alignment boundaries - these displacements | |
2113 | *grow* when we delete bytes. For now, don't shrink | |
2114 | displacements across an alignment boundary, just in case. | |
2115 | Note that this only affects relocations to the same | |
2116 | section. */ | |
2117 | prev_alignment = next_alignment; | |
2118 | next_alignment += 2; | |
2119 | while (next_alignment < irelend | |
2120 | && (ELF32_R_TYPE (next_alignment->r_info) != R_RX_RH_RELAX | |
2121 | || !(next_alignment->r_addend & RX_RELAXA_ELIGN))) | |
2122 | next_alignment ++; | |
2123 | if (next_alignment >= irelend || next_alignment->r_offset == 0) | |
2124 | next_alignment = NULL; | |
2125 | } | |
2126 | ||
2127 | /* When we hit alignment markers, see if we've shrunk enough | |
2128 | before them to reduce the gap without violating the alignment | |
2129 | requirements. */ | |
2130 | if (irel->r_addend & RX_RELAXA_ALIGN) | |
2131 | { | |
2132 | /* At this point, the next relocation *should* be the ELIGN | |
2133 | end marker. */ | |
2134 | Elf_Internal_Rela *erel = irel + 1; | |
2135 | unsigned int alignment, nbytes; | |
2136 | ||
2137 | if (ELF32_R_TYPE (erel->r_info) != R_RX_RH_RELAX) | |
2138 | continue; | |
2139 | if (!(erel->r_addend & RX_RELAXA_ELIGN)) | |
2140 | continue; | |
2141 | ||
2142 | alignment = 1 << (irel->r_addend & RX_RELAXA_ANUM); | |
2143 | ||
2144 | if (erel->r_offset - irel->r_offset < alignment) | |
2145 | continue; | |
2146 | ||
2147 | nbytes = erel->r_offset - irel->r_offset; | |
2148 | nbytes /= alignment; | |
2149 | nbytes *= alignment; | |
2150 | ||
2151 | elf32_rx_relax_delete_bytes (abfd, sec, erel->r_offset-nbytes, nbytes, next_alignment, | |
5ee4a06a | 2152 | erel->r_offset == sec->size, internal_relocs); |
c7927a3c NC |
2153 | *again = TRUE; |
2154 | ||
2155 | continue; | |
2156 | } | |
2157 | ||
2158 | if (irel->r_addend & RX_RELAXA_ELIGN) | |
2159 | continue; | |
2160 | ||
2161 | insn = contents + irel->r_offset; | |
2162 | ||
2163 | nrelocs = irel->r_addend & RX_RELAXA_RNUM; | |
2164 | ||
2165 | /* At this point, we have an insn that is a candidate for linker | |
2166 | relaxation. There are NRELOCS relocs following that may be | |
2167 | relaxed, although each reloc may be made of more than one | |
2168 | reloc entry (such as gp-rel symbols). */ | |
2169 | ||
2170 | /* Get the value of the symbol referred to by the reloc. Just | |
07d6d2b8 AM |
2171 | in case this is the last reloc in the list, use the RL's |
2172 | addend to choose between this reloc (no addend) or the next | |
2173 | (yes addend, which means at least one following reloc). */ | |
c7927a3c NC |
2174 | |
2175 | /* srel points to the "current" reloction for this insn - | |
2176 | actually the last reloc for a given operand, which is the one | |
2177 | we need to update. We check the relaxations in the same | |
2178 | order that the relocations happen, so we'll just push it | |
2179 | along as we go. */ | |
2180 | srel = irel; | |
2181 | ||
2182 | pc = sec->output_section->vma + sec->output_offset | |
2183 | + srel->r_offset; | |
2184 | ||
2185 | #define GET_RELOC \ | |
2186 | symval = OFFSET_FOR_RELOC (srel, &srel, &scale); \ | |
2187 | pcrel = symval - pc + srel->r_addend; \ | |
2188 | nrelocs --; | |
2189 | ||
2190 | #define SNIPNR(offset, nbytes) \ | |
5ee4a06a | 2191 | elf32_rx_relax_delete_bytes (abfd, sec, (insn - contents) + offset, nbytes, next_alignment, 0, internal_relocs); |
c7927a3c | 2192 | #define SNIP(offset, nbytes, newtype) \ |
07d6d2b8 | 2193 | SNIPNR (offset, nbytes); \ |
c7927a3c NC |
2194 | srel->r_info = ELF32_R_INFO (ELF32_R_SYM (srel->r_info), newtype) |
2195 | ||
2196 | /* The order of these bit tests must match the order that the | |
2197 | relocs appear in. Since we sorted those by offset, we can | |
2198 | predict them. */ | |
2199 | ||
2200 | /* Note that the numbers in, say, DSP6 are the bit offsets of | |
2201 | the code fields that describe the operand. Bits number 0 for | |
2202 | the MSB of insn[0]. */ | |
2203 | ||
2204 | /* DSP* codes: | |
2205 | 0 00 [reg] | |
2206 | 1 01 dsp:8[reg] | |
2207 | 2 10 dsp:16[reg] | |
2208 | 3 11 reg */ | |
2209 | if (irel->r_addend & RX_RELAXA_DSP6) | |
2210 | { | |
2211 | GET_RELOC; | |
2212 | ||
2213 | code = insn[0] & 3; | |
2214 | if (code == 2 && symval/scale <= 255) | |
2215 | { | |
2216 | unsigned int newrel = ELF32_R_TYPE (srel->r_info); | |
2217 | insn[0] &= 0xfc; | |
2218 | insn[0] |= 0x01; | |
2219 | newrel = next_smaller_reloc (ELF32_R_TYPE (srel->r_info)); | |
2220 | if (newrel != ELF32_R_TYPE (srel->r_info)) | |
2221 | { | |
2222 | SNIP (3, 1, newrel); | |
2223 | *again = TRUE; | |
2224 | } | |
2225 | } | |
2226 | ||
2227 | else if (code == 1 && symval == 0) | |
2228 | { | |
2229 | insn[0] &= 0xfc; | |
2230 | SNIP (2, 1, R_RX_NONE); | |
2231 | *again = TRUE; | |
2232 | } | |
2233 | ||
2234 | /* Special case DSP:5 format: MOV.bwl dsp:5[Rsrc],Rdst. */ | |
2235 | else if (code == 1 && symval/scale <= 31 | |
2236 | /* Decodable bits. */ | |
2237 | && (insn[0] & 0xcc) == 0xcc | |
91d6fa6a | 2238 | /* Width. */ |
eb8c5f3f | 2239 | && (insn[0] & 0x30) != 0x30 |
91d6fa6a | 2240 | /* Register MSBs. */ |
c7927a3c NC |
2241 | && (insn[1] & 0x88) == 0x00) |
2242 | { | |
2243 | int newrel = 0; | |
2244 | ||
2245 | insn[0] = 0x88 | (insn[0] & 0x30); | |
2246 | /* The register fields are in the right place already. */ | |
2247 | ||
2248 | /* We can't relax this new opcode. */ | |
2249 | irel->r_addend = 0; | |
2250 | ||
2251 | switch ((insn[0] & 0x30) >> 4) | |
2252 | { | |
2253 | case 0: | |
2254 | newrel = R_RX_RH_ABS5p5B; | |
2255 | break; | |
2256 | case 1: | |
2257 | newrel = R_RX_RH_ABS5p5W; | |
2258 | break; | |
2259 | case 2: | |
2260 | newrel = R_RX_RH_ABS5p5L; | |
2261 | break; | |
2262 | } | |
2263 | ||
2264 | move_reloc (irel, srel, -2); | |
2265 | SNIP (2, 1, newrel); | |
2266 | } | |
2267 | ||
2268 | /* Special case DSP:5 format: MOVU.bw dsp:5[Rsrc],Rdst. */ | |
2269 | else if (code == 1 && symval/scale <= 31 | |
2270 | /* Decodable bits. */ | |
2271 | && (insn[0] & 0xf8) == 0x58 | |
2272 | /* Register MSBs. */ | |
2273 | && (insn[1] & 0x88) == 0x00) | |
2274 | { | |
2275 | int newrel = 0; | |
2276 | ||
2277 | insn[0] = 0xb0 | ((insn[0] & 0x04) << 1); | |
2278 | /* The register fields are in the right place already. */ | |
2279 | ||
2280 | /* We can't relax this new opcode. */ | |
2281 | irel->r_addend = 0; | |
2282 | ||
2283 | switch ((insn[0] & 0x08) >> 3) | |
2284 | { | |
2285 | case 0: | |
2286 | newrel = R_RX_RH_ABS5p5B; | |
2287 | break; | |
2288 | case 1: | |
2289 | newrel = R_RX_RH_ABS5p5W; | |
2290 | break; | |
2291 | } | |
2292 | ||
2293 | move_reloc (irel, srel, -2); | |
2294 | SNIP (2, 1, newrel); | |
2295 | } | |
2296 | } | |
2297 | ||
2298 | /* A DSP4 operand always follows a DSP6 operand, even if there's | |
2299 | no relocation for it. We have to read the code out of the | |
2300 | opcode to calculate the offset of the operand. */ | |
2301 | if (irel->r_addend & RX_RELAXA_DSP4) | |
2302 | { | |
2303 | int code6, offset = 0; | |
2304 | ||
2305 | GET_RELOC; | |
2306 | ||
2307 | code6 = insn[0] & 0x03; | |
2308 | switch (code6) | |
2309 | { | |
2310 | case 0: offset = 2; break; | |
2311 | case 1: offset = 3; break; | |
2312 | case 2: offset = 4; break; | |
2313 | case 3: offset = 2; break; | |
2314 | } | |
2315 | ||
2316 | code = (insn[0] & 0x0c) >> 2; | |
2317 | ||
2318 | if (code == 2 && symval / scale <= 255) | |
2319 | { | |
2320 | unsigned int newrel = ELF32_R_TYPE (srel->r_info); | |
2321 | ||
2322 | insn[0] &= 0xf3; | |
2323 | insn[0] |= 0x04; | |
2324 | newrel = next_smaller_reloc (ELF32_R_TYPE (srel->r_info)); | |
2325 | if (newrel != ELF32_R_TYPE (srel->r_info)) | |
2326 | { | |
2327 | SNIP (offset+1, 1, newrel); | |
2328 | *again = TRUE; | |
2329 | } | |
2330 | } | |
2331 | ||
2332 | else if (code == 1 && symval == 0) | |
2333 | { | |
2334 | insn[0] &= 0xf3; | |
2335 | SNIP (offset, 1, R_RX_NONE); | |
2336 | *again = TRUE; | |
2337 | } | |
2338 | /* Special case DSP:5 format: MOV.bwl Rsrc,dsp:5[Rdst] */ | |
2339 | else if (code == 1 && symval/scale <= 31 | |
2340 | /* Decodable bits. */ | |
2341 | && (insn[0] & 0xc3) == 0xc3 | |
2342 | /* Width. */ | |
eb8c5f3f | 2343 | && (insn[0] & 0x30) != 0x30 |
c7927a3c NC |
2344 | /* Register MSBs. */ |
2345 | && (insn[1] & 0x88) == 0x00) | |
2346 | { | |
2347 | int newrel = 0; | |
2348 | ||
2349 | insn[0] = 0x80 | (insn[0] & 0x30); | |
2350 | /* The register fields are in the right place already. */ | |
2351 | ||
2352 | /* We can't relax this new opcode. */ | |
2353 | irel->r_addend = 0; | |
2354 | ||
2355 | switch ((insn[0] & 0x30) >> 4) | |
2356 | { | |
2357 | case 0: | |
2358 | newrel = R_RX_RH_ABS5p5B; | |
2359 | break; | |
2360 | case 1: | |
2361 | newrel = R_RX_RH_ABS5p5W; | |
2362 | break; | |
2363 | case 2: | |
2364 | newrel = R_RX_RH_ABS5p5L; | |
2365 | break; | |
2366 | } | |
2367 | ||
2368 | move_reloc (irel, srel, -2); | |
2369 | SNIP (2, 1, newrel); | |
2370 | } | |
2371 | } | |
2372 | ||
2373 | /* These always occur alone, but the offset depends on whether | |
2374 | it's a MEMEX opcode (0x06) or not. */ | |
2375 | if (irel->r_addend & RX_RELAXA_DSP14) | |
2376 | { | |
2377 | int offset; | |
2378 | GET_RELOC; | |
2379 | ||
2380 | if (insn[0] == 0x06) | |
2381 | offset = 3; | |
2382 | else | |
2383 | offset = 4; | |
2384 | ||
2385 | code = insn[1] & 3; | |
2386 | ||
2387 | if (code == 2 && symval / scale <= 255) | |
2388 | { | |
2389 | unsigned int newrel = ELF32_R_TYPE (srel->r_info); | |
2390 | ||
2391 | insn[1] &= 0xfc; | |
2392 | insn[1] |= 0x01; | |
2393 | newrel = next_smaller_reloc (ELF32_R_TYPE (srel->r_info)); | |
2394 | if (newrel != ELF32_R_TYPE (srel->r_info)) | |
2395 | { | |
2396 | SNIP (offset, 1, newrel); | |
2397 | *again = TRUE; | |
2398 | } | |
2399 | } | |
2400 | else if (code == 1 && symval == 0) | |
2401 | { | |
2402 | insn[1] &= 0xfc; | |
2403 | SNIP (offset, 1, R_RX_NONE); | |
2404 | *again = TRUE; | |
2405 | } | |
2406 | } | |
2407 | ||
2408 | /* IMM* codes: | |
2409 | 0 00 imm:32 | |
2410 | 1 01 simm:8 | |
2411 | 2 10 simm:16 | |
2412 | 3 11 simm:24. */ | |
2413 | ||
2414 | /* These always occur alone. */ | |
2415 | if (irel->r_addend & RX_RELAXA_IMM6) | |
2416 | { | |
2417 | long ssymval; | |
2418 | ||
2419 | GET_RELOC; | |
2420 | ||
2421 | /* These relocations sign-extend, so we must do signed compares. */ | |
2422 | ssymval = (long) symval; | |
2423 | ||
2424 | code = insn[0] & 0x03; | |
2425 | ||
2426 | if (code == 0 && ssymval <= 8388607 && ssymval >= -8388608) | |
2427 | { | |
2428 | unsigned int newrel = ELF32_R_TYPE (srel->r_info); | |
2429 | ||
2430 | insn[0] &= 0xfc; | |
2431 | insn[0] |= 0x03; | |
2432 | newrel = next_smaller_reloc (ELF32_R_TYPE (srel->r_info)); | |
2433 | if (newrel != ELF32_R_TYPE (srel->r_info)) | |
2434 | { | |
2435 | SNIP (2, 1, newrel); | |
2436 | *again = TRUE; | |
2437 | } | |
2438 | } | |
2439 | ||
2440 | else if (code == 3 && ssymval <= 32767 && ssymval >= -32768) | |
2441 | { | |
2442 | unsigned int newrel = ELF32_R_TYPE (srel->r_info); | |
2443 | ||
2444 | insn[0] &= 0xfc; | |
2445 | insn[0] |= 0x02; | |
2446 | newrel = next_smaller_reloc (ELF32_R_TYPE (srel->r_info)); | |
2447 | if (newrel != ELF32_R_TYPE (srel->r_info)) | |
2448 | { | |
2449 | SNIP (2, 1, newrel); | |
2450 | *again = TRUE; | |
2451 | } | |
2452 | } | |
2453 | ||
2454 | /* Special case UIMM8 format: CMP #uimm8,Rdst. */ | |
2455 | else if (code == 2 && ssymval <= 255 && ssymval >= 16 | |
2456 | /* Decodable bits. */ | |
2457 | && (insn[0] & 0xfc) == 0x74 | |
2458 | /* Decodable bits. */ | |
2459 | && ((insn[1] & 0xf0) == 0x00)) | |
2460 | { | |
2461 | int newrel; | |
2462 | ||
2463 | insn[0] = 0x75; | |
2464 | insn[1] = 0x50 | (insn[1] & 0x0f); | |
2465 | ||
2466 | /* We can't relax this new opcode. */ | |
2467 | irel->r_addend = 0; | |
2468 | ||
2469 | if (STACK_REL_P (ELF32_R_TYPE (srel->r_info))) | |
2470 | newrel = R_RX_ABS8U; | |
2471 | else | |
2472 | newrel = R_RX_DIR8U; | |
2473 | ||
2474 | SNIP (2, 1, newrel); | |
2475 | *again = TRUE; | |
2476 | } | |
2477 | ||
2478 | else if (code == 2 && ssymval <= 127 && ssymval >= -128) | |
2479 | { | |
2480 | unsigned int newrel = ELF32_R_TYPE (srel->r_info); | |
2481 | ||
2482 | insn[0] &= 0xfc; | |
2483 | insn[0] |= 0x01; | |
2484 | newrel = next_smaller_reloc (ELF32_R_TYPE (srel->r_info)); | |
2485 | if (newrel != ELF32_R_TYPE (srel->r_info)) | |
2486 | { | |
2487 | SNIP (2, 1, newrel); | |
2488 | *again = TRUE; | |
2489 | } | |
2490 | } | |
2491 | ||
2492 | /* Special case UIMM4 format: CMP, MUL, AND, OR. */ | |
2493 | else if (code == 1 && ssymval <= 15 && ssymval >= 0 | |
2494 | /* Decodable bits and immediate type. */ | |
2495 | && insn[0] == 0x75 | |
2496 | /* Decodable bits. */ | |
2497 | && (insn[1] & 0xc0) == 0x00) | |
2498 | { | |
2499 | static const int newop[4] = { 1, 3, 4, 5 }; | |
2500 | ||
2501 | insn[0] = 0x60 | newop[insn[1] >> 4]; | |
2502 | /* The register number doesn't move. */ | |
2503 | ||
2504 | /* We can't relax this new opcode. */ | |
2505 | irel->r_addend = 0; | |
2506 | ||
2507 | move_reloc (irel, srel, -1); | |
2508 | ||
2509 | SNIP (2, 1, R_RX_RH_UIMM4p8); | |
2510 | *again = TRUE; | |
2511 | } | |
2512 | ||
2513 | /* Special case UIMM4 format: ADD -> ADD/SUB. */ | |
2514 | else if (code == 1 && ssymval <= 15 && ssymval >= -15 | |
2515 | /* Decodable bits and immediate type. */ | |
2516 | && insn[0] == 0x71 | |
2517 | /* Same register for source and destination. */ | |
2518 | && ((insn[1] >> 4) == (insn[1] & 0x0f))) | |
2519 | { | |
2520 | int newrel; | |
2521 | ||
2522 | /* Note that we can't turn "add $0,Rs" into a NOP | |
2523 | because the flags need to be set right. */ | |
2524 | ||
2525 | if (ssymval < 0) | |
2526 | { | |
2527 | insn[0] = 0x60; /* Subtract. */ | |
2528 | newrel = R_RX_RH_UNEG4p8; | |
2529 | } | |
2530 | else | |
2531 | { | |
2532 | insn[0] = 0x62; /* Add. */ | |
2533 | newrel = R_RX_RH_UIMM4p8; | |
2534 | } | |
2535 | ||
2536 | /* The register number is in the right place. */ | |
2537 | ||
2538 | /* We can't relax this new opcode. */ | |
2539 | irel->r_addend = 0; | |
2540 | ||
2541 | move_reloc (irel, srel, -1); | |
2542 | ||
2543 | SNIP (2, 1, newrel); | |
2544 | *again = TRUE; | |
2545 | } | |
2546 | } | |
2547 | ||
2548 | /* These are either matched with a DSP6 (2-byte base) or an id24 | |
2549 | (3-byte base). */ | |
2550 | if (irel->r_addend & RX_RELAXA_IMM12) | |
2551 | { | |
2552 | int dspcode, offset = 0; | |
2553 | long ssymval; | |
2554 | ||
2555 | GET_RELOC; | |
2556 | ||
2557 | if ((insn[0] & 0xfc) == 0xfc) | |
2558 | dspcode = 1; /* Just something with one byte operand. */ | |
2559 | else | |
2560 | dspcode = insn[0] & 3; | |
2561 | switch (dspcode) | |
2562 | { | |
2563 | case 0: offset = 2; break; | |
2564 | case 1: offset = 3; break; | |
2565 | case 2: offset = 4; break; | |
2566 | case 3: offset = 2; break; | |
2567 | } | |
2568 | ||
2569 | /* These relocations sign-extend, so we must do signed compares. */ | |
2570 | ssymval = (long) symval; | |
2571 | ||
2572 | code = (insn[1] >> 2) & 3; | |
2573 | if (code == 0 && ssymval <= 8388607 && ssymval >= -8388608) | |
2574 | { | |
2575 | unsigned int newrel = ELF32_R_TYPE (srel->r_info); | |
2576 | ||
2577 | insn[1] &= 0xf3; | |
2578 | insn[1] |= 0x0c; | |
2579 | newrel = next_smaller_reloc (ELF32_R_TYPE (srel->r_info)); | |
2580 | if (newrel != ELF32_R_TYPE (srel->r_info)) | |
2581 | { | |
2582 | SNIP (offset, 1, newrel); | |
2583 | *again = TRUE; | |
2584 | } | |
2585 | } | |
2586 | ||
2587 | else if (code == 3 && ssymval <= 32767 && ssymval >= -32768) | |
2588 | { | |
2589 | unsigned int newrel = ELF32_R_TYPE (srel->r_info); | |
2590 | ||
2591 | insn[1] &= 0xf3; | |
2592 | insn[1] |= 0x08; | |
2593 | newrel = next_smaller_reloc (ELF32_R_TYPE (srel->r_info)); | |
2594 | if (newrel != ELF32_R_TYPE (srel->r_info)) | |
2595 | { | |
2596 | SNIP (offset, 1, newrel); | |
2597 | *again = TRUE; | |
2598 | } | |
2599 | } | |
2600 | ||
2601 | /* Special case UIMM8 format: MOV #uimm8,Rdst. */ | |
2602 | else if (code == 2 && ssymval <= 255 && ssymval >= 16 | |
2603 | /* Decodable bits. */ | |
2604 | && insn[0] == 0xfb | |
2605 | /* Decodable bits. */ | |
2606 | && ((insn[1] & 0x03) == 0x02)) | |
2607 | { | |
2608 | int newrel; | |
2609 | ||
2610 | insn[0] = 0x75; | |
2611 | insn[1] = 0x40 | (insn[1] >> 4); | |
2612 | ||
2613 | /* We can't relax this new opcode. */ | |
2614 | irel->r_addend = 0; | |
2615 | ||
2616 | if (STACK_REL_P (ELF32_R_TYPE (srel->r_info))) | |
2617 | newrel = R_RX_ABS8U; | |
2618 | else | |
2619 | newrel = R_RX_DIR8U; | |
2620 | ||
2621 | SNIP (2, 1, newrel); | |
2622 | *again = TRUE; | |
2623 | } | |
2624 | ||
2625 | else if (code == 2 && ssymval <= 127 && ssymval >= -128) | |
2626 | { | |
2627 | unsigned int newrel = ELF32_R_TYPE(srel->r_info); | |
2628 | ||
2629 | insn[1] &= 0xf3; | |
2630 | insn[1] |= 0x04; | |
2631 | newrel = next_smaller_reloc (ELF32_R_TYPE (srel->r_info)); | |
2632 | if (newrel != ELF32_R_TYPE(srel->r_info)) | |
2633 | { | |
2634 | SNIP (offset, 1, newrel); | |
2635 | *again = TRUE; | |
2636 | } | |
2637 | } | |
2638 | ||
2639 | /* Special case UIMM4 format: MOV #uimm4,Rdst. */ | |
2640 | else if (code == 1 && ssymval <= 15 && ssymval >= 0 | |
2641 | /* Decodable bits. */ | |
2642 | && insn[0] == 0xfb | |
2643 | /* Decodable bits. */ | |
2644 | && ((insn[1] & 0x03) == 0x02)) | |
2645 | { | |
2646 | insn[0] = 0x66; | |
2647 | insn[1] = insn[1] >> 4; | |
2648 | ||
2649 | /* We can't relax this new opcode. */ | |
2650 | irel->r_addend = 0; | |
2651 | ||
2652 | move_reloc (irel, srel, -1); | |
2653 | ||
2654 | SNIP (2, 1, R_RX_RH_UIMM4p8); | |
2655 | *again = TRUE; | |
2656 | } | |
2657 | } | |
2658 | ||
2659 | if (irel->r_addend & RX_RELAXA_BRA) | |
2660 | { | |
2661 | unsigned int newrel = ELF32_R_TYPE (srel->r_info); | |
2662 | int max_pcrel3 = 4; | |
2663 | int alignment_glue = 0; | |
2664 | ||
2665 | GET_RELOC; | |
2666 | ||
2667 | /* Branches over alignment chunks are problematic, as | |
2668 | deleting bytes here makes the branch *further* away. We | |
2669 | can be agressive with branches within this alignment | |
2670 | block, but not branches outside it. */ | |
2671 | if ((prev_alignment == NULL | |
2672 | || symval < (bfd_vma)(sec_start + prev_alignment->r_offset)) | |
2673 | && (next_alignment == NULL | |
2674 | || symval > (bfd_vma)(sec_start + next_alignment->r_offset))) | |
2675 | alignment_glue = section_alignment_glue; | |
2676 | ||
2677 | if (ELF32_R_TYPE(srel[1].r_info) == R_RX_RH_RELAX | |
2678 | && srel[1].r_addend & RX_RELAXA_BRA | |
2679 | && srel[1].r_offset < irel->r_offset + pcrel) | |
2680 | max_pcrel3 ++; | |
2681 | ||
2682 | newrel = next_smaller_reloc (ELF32_R_TYPE (srel->r_info)); | |
2683 | ||
2684 | /* The values we compare PCREL with are not what you'd | |
2685 | expect; they're off by a little to compensate for (1) | |
2686 | where the reloc is relative to the insn, and (2) how much | |
2687 | the insn is going to change when we relax it. */ | |
2688 | ||
2689 | /* These we have to decode. */ | |
2690 | switch (insn[0]) | |
2691 | { | |
2692 | case 0x04: /* BRA pcdsp:24 */ | |
2693 | if (-32768 + alignment_glue <= pcrel | |
2694 | && pcrel <= 32765 - alignment_glue) | |
2695 | { | |
2696 | insn[0] = 0x38; | |
2697 | SNIP (3, 1, newrel); | |
2698 | *again = TRUE; | |
2699 | } | |
2700 | break; | |
2701 | ||
2702 | case 0x38: /* BRA pcdsp:16 */ | |
2703 | if (-128 + alignment_glue <= pcrel | |
2704 | && pcrel <= 127 - alignment_glue) | |
2705 | { | |
2706 | insn[0] = 0x2e; | |
2707 | SNIP (2, 1, newrel); | |
2708 | *again = TRUE; | |
2709 | } | |
2710 | break; | |
2711 | ||
2712 | case 0x2e: /* BRA pcdsp:8 */ | |
2713 | /* Note that there's a risk here of shortening things so | |
2714 | much that we no longer fit this reloc; it *should* | |
2715 | only happen when you branch across a branch, and that | |
2716 | branch also devolves into BRA.S. "Real" code should | |
2717 | be OK. */ | |
2718 | if (max_pcrel3 + alignment_glue <= pcrel | |
2719 | && pcrel <= 10 - alignment_glue | |
2720 | && allow_pcrel3) | |
2721 | { | |
2722 | insn[0] = 0x08; | |
2723 | SNIP (1, 1, newrel); | |
2724 | move_reloc (irel, srel, -1); | |
2725 | *again = TRUE; | |
2726 | } | |
2727 | break; | |
2728 | ||
2729 | case 0x05: /* BSR pcdsp:24 */ | |
2730 | if (-32768 + alignment_glue <= pcrel | |
2731 | && pcrel <= 32765 - alignment_glue) | |
2732 | { | |
2733 | insn[0] = 0x39; | |
2734 | SNIP (1, 1, newrel); | |
2735 | *again = TRUE; | |
2736 | } | |
2737 | break; | |
2738 | ||
2739 | case 0x3a: /* BEQ.W pcdsp:16 */ | |
2740 | case 0x3b: /* BNE.W pcdsp:16 */ | |
2741 | if (-128 + alignment_glue <= pcrel | |
2742 | && pcrel <= 127 - alignment_glue) | |
2743 | { | |
2744 | insn[0] = 0x20 | (insn[0] & 1); | |
2745 | SNIP (1, 1, newrel); | |
2746 | *again = TRUE; | |
2747 | } | |
2748 | break; | |
2749 | ||
2750 | case 0x20: /* BEQ.B pcdsp:8 */ | |
2751 | case 0x21: /* BNE.B pcdsp:8 */ | |
2752 | if (max_pcrel3 + alignment_glue <= pcrel | |
2753 | && pcrel - alignment_glue <= 10 | |
2754 | && allow_pcrel3) | |
2755 | { | |
2756 | insn[0] = 0x10 | ((insn[0] & 1) << 3); | |
2757 | SNIP (1, 1, newrel); | |
2758 | move_reloc (irel, srel, -1); | |
2759 | *again = TRUE; | |
2760 | } | |
2761 | break; | |
2762 | ||
2763 | case 0x16: /* synthetic BNE dsp24 */ | |
2764 | case 0x1e: /* synthetic BEQ dsp24 */ | |
2765 | if (-32767 + alignment_glue <= pcrel | |
2766 | && pcrel <= 32766 - alignment_glue | |
2767 | && insn[1] == 0x04) | |
2768 | { | |
2769 | if (insn[0] == 0x16) | |
2770 | insn[0] = 0x3b; | |
2771 | else | |
2772 | insn[0] = 0x3a; | |
2773 | /* We snip out the bytes at the end else the reloc | |
2774 | will get moved too, and too much. */ | |
2775 | SNIP (3, 2, newrel); | |
2776 | move_reloc (irel, srel, -1); | |
2777 | *again = TRUE; | |
2778 | } | |
2779 | break; | |
2780 | } | |
2781 | ||
2782 | /* Special case - synthetic conditional branches, pcrel24. | |
2783 | Note that EQ and NE have been handled above. */ | |
2784 | if ((insn[0] & 0xf0) == 0x20 | |
2785 | && insn[1] == 0x06 | |
2786 | && insn[2] == 0x04 | |
2787 | && srel->r_offset != irel->r_offset + 1 | |
2788 | && -32767 + alignment_glue <= pcrel | |
2789 | && pcrel <= 32766 - alignment_glue) | |
2790 | { | |
2791 | insn[1] = 0x05; | |
2792 | insn[2] = 0x38; | |
2793 | SNIP (5, 1, newrel); | |
2794 | *again = TRUE; | |
2795 | } | |
2796 | ||
2797 | /* Special case - synthetic conditional branches, pcrel16 */ | |
2798 | if ((insn[0] & 0xf0) == 0x20 | |
2799 | && insn[1] == 0x05 | |
2800 | && insn[2] == 0x38 | |
2801 | && srel->r_offset != irel->r_offset + 1 | |
2802 | && -127 + alignment_glue <= pcrel | |
2803 | && pcrel <= 126 - alignment_glue) | |
2804 | { | |
2805 | int cond = (insn[0] & 0x0f) ^ 0x01; | |
2806 | ||
2807 | insn[0] = 0x20 | cond; | |
2808 | /* By moving the reloc first, we avoid having | |
2809 | delete_bytes move it also. */ | |
2810 | move_reloc (irel, srel, -2); | |
2811 | SNIP (2, 3, newrel); | |
2812 | *again = TRUE; | |
2813 | } | |
2814 | } | |
2815 | ||
2816 | BFD_ASSERT (nrelocs == 0); | |
2817 | ||
2818 | /* Special case - check MOV.bwl #IMM, dsp[reg] and see if we can | |
2819 | use MOV.bwl #uimm:8, dsp:5[r7] format. This is tricky | |
2820 | because it may have one or two relocations. */ | |
2821 | if ((insn[0] & 0xfc) == 0xf8 | |
2822 | && (insn[1] & 0x80) == 0x00 | |
2823 | && (insn[0] & 0x03) != 0x03) | |
2824 | { | |
2825 | int dcode, icode, reg, ioff, dscale, ilen; | |
2826 | bfd_vma disp_val = 0; | |
2827 | long imm_val = 0; | |
2828 | Elf_Internal_Rela * disp_rel = 0; | |
2829 | Elf_Internal_Rela * imm_rel = 0; | |
2830 | ||
2831 | /* Reset this. */ | |
2832 | srel = irel; | |
2833 | ||
2834 | dcode = insn[0] & 0x03; | |
2835 | icode = (insn[1] >> 2) & 0x03; | |
2836 | reg = (insn[1] >> 4) & 0x0f; | |
2837 | ||
2838 | ioff = dcode == 1 ? 3 : dcode == 2 ? 4 : 2; | |
2839 | ||
2840 | /* Figure out what the dispacement is. */ | |
2841 | if (dcode == 1 || dcode == 2) | |
2842 | { | |
2843 | /* There's a displacement. See if there's a reloc for it. */ | |
2844 | if (srel[1].r_offset == irel->r_offset + 2) | |
2845 | { | |
2846 | GET_RELOC; | |
2847 | disp_val = symval; | |
2848 | disp_rel = srel; | |
2849 | } | |
2850 | else | |
2851 | { | |
2852 | if (dcode == 1) | |
2853 | disp_val = insn[2]; | |
2854 | else | |
2855 | { | |
2856 | #if RX_OPCODE_BIG_ENDIAN | |
2857 | disp_val = insn[2] * 256 + insn[3]; | |
2858 | #else | |
2859 | disp_val = insn[2] + insn[3] * 256; | |
2860 | #endif | |
2861 | } | |
2862 | switch (insn[1] & 3) | |
2863 | { | |
2864 | case 1: | |
2865 | disp_val *= 2; | |
2866 | scale = 2; | |
2867 | break; | |
2868 | case 2: | |
2869 | disp_val *= 4; | |
2870 | scale = 4; | |
2871 | break; | |
2872 | } | |
2873 | } | |
2874 | } | |
2875 | ||
2876 | dscale = scale; | |
2877 | ||
2878 | /* Figure out what the immediate is. */ | |
2879 | if (srel[1].r_offset == irel->r_offset + ioff) | |
2880 | { | |
2881 | GET_RELOC; | |
2882 | imm_val = (long) symval; | |
2883 | imm_rel = srel; | |
2884 | } | |
2885 | else | |
2886 | { | |
2887 | unsigned char * ip = insn + ioff; | |
2888 | ||
2889 | switch (icode) | |
2890 | { | |
2891 | case 1: | |
2892 | /* For byte writes, we don't sign extend. Makes the math easier later. */ | |
2893 | if (scale == 1) | |
2894 | imm_val = ip[0]; | |
2895 | else | |
2896 | imm_val = (char) ip[0]; | |
2897 | break; | |
2898 | case 2: | |
2899 | #if RX_OPCODE_BIG_ENDIAN | |
2900 | imm_val = ((char) ip[0] << 8) | ip[1]; | |
2901 | #else | |
2902 | imm_val = ((char) ip[1] << 8) | ip[0]; | |
2903 | #endif | |
2904 | break; | |
2905 | case 3: | |
2906 | #if RX_OPCODE_BIG_ENDIAN | |
2907 | imm_val = ((char) ip[0] << 16) | (ip[1] << 8) | ip[2]; | |
2908 | #else | |
2909 | imm_val = ((char) ip[2] << 16) | (ip[1] << 8) | ip[0]; | |
2910 | #endif | |
2911 | break; | |
2912 | case 0: | |
2913 | #if RX_OPCODE_BIG_ENDIAN | |
2914 | imm_val = (ip[0] << 24) | (ip[1] << 16) | (ip[2] << 8) | ip[3]; | |
2915 | #else | |
2916 | imm_val = (ip[3] << 24) | (ip[2] << 16) | (ip[1] << 8) | ip[0]; | |
2917 | #endif | |
2918 | break; | |
2919 | } | |
2920 | } | |
2921 | ||
2922 | ilen = 2; | |
2923 | ||
2924 | switch (dcode) | |
2925 | { | |
2926 | case 1: | |
2927 | ilen += 1; | |
2928 | break; | |
2929 | case 2: | |
2930 | ilen += 2; | |
2931 | break; | |
2932 | } | |
2933 | ||
2934 | switch (icode) | |
2935 | { | |
2936 | case 1: | |
2937 | ilen += 1; | |
2938 | break; | |
2939 | case 2: | |
2940 | ilen += 2; | |
2941 | break; | |
2942 | case 3: | |
2943 | ilen += 3; | |
2944 | break; | |
2945 | case 4: | |
2946 | ilen += 4; | |
2947 | break; | |
2948 | } | |
2949 | ||
2950 | /* The shortcut happens when the immediate is 0..255, | |
2951 | register r0 to r7, and displacement (scaled) 0..31. */ | |
2952 | ||
2953 | if (0 <= imm_val && imm_val <= 255 | |
2954 | && 0 <= reg && reg <= 7 | |
2955 | && disp_val / dscale <= 31) | |
2956 | { | |
2957 | insn[0] = 0x3c | (insn[1] & 0x03); | |
2958 | insn[1] = (((disp_val / dscale) << 3) & 0x80) | (reg << 4) | ((disp_val/dscale) & 0x0f); | |
2959 | insn[2] = imm_val; | |
2960 | ||
2961 | if (disp_rel) | |
2962 | { | |
2963 | int newrel = R_RX_NONE; | |
2964 | ||
2965 | switch (dscale) | |
2966 | { | |
2967 | case 1: | |
2968 | newrel = R_RX_RH_ABS5p8B; | |
2969 | break; | |
2970 | case 2: | |
2971 | newrel = R_RX_RH_ABS5p8W; | |
2972 | break; | |
2973 | case 4: | |
2974 | newrel = R_RX_RH_ABS5p8L; | |
2975 | break; | |
2976 | } | |
2977 | disp_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (disp_rel->r_info), newrel); | |
2978 | move_reloc (irel, disp_rel, -1); | |
2979 | } | |
2980 | if (imm_rel) | |
2981 | { | |
2982 | imm_rel->r_info = ELF32_R_INFO (ELF32_R_SYM (imm_rel->r_info), R_RX_DIR8U); | |
2983 | move_reloc (disp_rel ? disp_rel : irel, | |
2984 | imm_rel, | |
2985 | irel->r_offset - imm_rel->r_offset + 2); | |
2986 | } | |
2987 | ||
2988 | SNIPNR (3, ilen - 3); | |
2989 | *again = TRUE; | |
2990 | ||
2991 | /* We can't relax this new opcode. */ | |
2992 | irel->r_addend = 0; | |
2993 | } | |
2994 | } | |
2995 | } | |
2996 | ||
2997 | /* We can't reliably relax branches to DIR3U_PCREL unless we know | |
2998 | whatever they're branching over won't shrink any more. If we're | |
2999 | basically done here, do one more pass just for branches - but | |
3000 | don't request a pass after that one! */ | |
3001 | if (!*again && !allow_pcrel3) | |
3002 | { | |
3003 | bfd_boolean ignored; | |
3004 | ||
3005 | elf32_rx_relax_section (abfd, sec, link_info, &ignored, TRUE); | |
3006 | } | |
3007 | ||
3008 | return TRUE; | |
3009 | ||
3010 | error_return: | |
c7927a3c NC |
3011 | if (free_contents != NULL) |
3012 | free (free_contents); | |
3013 | ||
3014 | if (shndx_buf != NULL) | |
3015 | { | |
3016 | shndx_hdr->contents = NULL; | |
3017 | free (shndx_buf); | |
3018 | } | |
3019 | ||
3020 | if (free_intsyms != NULL) | |
3021 | free (free_intsyms); | |
3022 | ||
3023 | return FALSE; | |
3024 | } | |
3025 | ||
3026 | static bfd_boolean | |
07d6d2b8 AM |
3027 | elf32_rx_relax_section_wrapper (bfd * abfd, |
3028 | asection * sec, | |
c7927a3c | 3029 | struct bfd_link_info * link_info, |
07d6d2b8 | 3030 | bfd_boolean * again) |
c7927a3c NC |
3031 | { |
3032 | return elf32_rx_relax_section (abfd, sec, link_info, again, FALSE); | |
3033 | } | |
3034 | \f | |
3035 | /* Function to set the ELF flag bits. */ | |
3036 | ||
3037 | static bfd_boolean | |
3038 | rx_elf_set_private_flags (bfd * abfd, flagword flags) | |
3039 | { | |
3040 | elf_elfheader (abfd)->e_flags = flags; | |
3041 | elf_flags_init (abfd) = TRUE; | |
3042 | return TRUE; | |
3043 | } | |
3044 | ||
3045 | static bfd_boolean no_warn_mismatch = FALSE; | |
84bff83f | 3046 | static bfd_boolean ignore_lma = TRUE; |
c7927a3c | 3047 | |
84bff83f | 3048 | void bfd_elf32_rx_set_target_flags (bfd_boolean, bfd_boolean); |
c7927a3c NC |
3049 | |
3050 | void | |
84bff83f NC |
3051 | bfd_elf32_rx_set_target_flags (bfd_boolean user_no_warn_mismatch, |
3052 | bfd_boolean user_ignore_lma) | |
c7927a3c NC |
3053 | { |
3054 | no_warn_mismatch = user_no_warn_mismatch; | |
84bff83f | 3055 | ignore_lma = user_ignore_lma; |
c7927a3c NC |
3056 | } |
3057 | ||
708e2187 NC |
3058 | /* Converts FLAGS into a descriptive string. |
3059 | Returns a static pointer. */ | |
3060 | ||
3061 | static const char * | |
3062 | describe_flags (flagword flags) | |
3063 | { | |
3064 | static char buf [128]; | |
3065 | ||
3066 | buf[0] = 0; | |
3067 | ||
3068 | if (flags & E_FLAG_RX_64BIT_DOUBLES) | |
3069 | strcat (buf, "64-bit doubles"); | |
3070 | else | |
3071 | strcat (buf, "32-bit doubles"); | |
3072 | ||
3073 | if (flags & E_FLAG_RX_DSP) | |
3074 | strcat (buf, ", dsp"); | |
3075 | else | |
3076 | strcat (buf, ", no dsp"); | |
3077 | ||
3078 | if (flags & E_FLAG_RX_PID) | |
3079 | strcat (buf, ", pid"); | |
3080 | else | |
3081 | strcat (buf, ", no pid"); | |
3082 | ||
3083 | if (flags & E_FLAG_RX_ABI) | |
3084 | strcat (buf, ", RX ABI"); | |
3085 | else | |
3086 | strcat (buf, ", GCC ABI"); | |
3087 | ||
3525236c NC |
3088 | if (flags & E_FLAG_RX_SINSNS_SET) |
3089 | strcat (buf, flags & E_FLAG_RX_SINSNS_YES ? ", uses String instructions" : ", bans String instructions"); | |
3090 | ||
708e2187 NC |
3091 | return buf; |
3092 | } | |
3093 | ||
c7927a3c NC |
3094 | /* Merge backend specific data from an object file to the output |
3095 | object file when linking. */ | |
3096 | ||
3097 | static bfd_boolean | |
50e03d47 | 3098 | rx_elf_merge_private_bfd_data (bfd * ibfd, struct bfd_link_info *info) |
c7927a3c | 3099 | { |
50e03d47 | 3100 | bfd *obfd = info->output_bfd; |
c7927a3c NC |
3101 | flagword old_flags; |
3102 | flagword new_flags; | |
3103 | bfd_boolean error = FALSE; | |
3104 | ||
3105 | new_flags = elf_elfheader (ibfd)->e_flags; | |
3106 | old_flags = elf_elfheader (obfd)->e_flags; | |
3107 | ||
3108 | if (!elf_flags_init (obfd)) | |
3109 | { | |
3110 | /* First call, no flags set. */ | |
3111 | elf_flags_init (obfd) = TRUE; | |
3112 | elf_elfheader (obfd)->e_flags = new_flags; | |
3113 | } | |
3114 | else if (old_flags != new_flags) | |
3115 | { | |
708e2187 NC |
3116 | flagword known_flags; |
3117 | ||
3525236c NC |
3118 | if (old_flags & E_FLAG_RX_SINSNS_SET) |
3119 | { | |
3120 | if ((new_flags & E_FLAG_RX_SINSNS_SET) == 0) | |
3121 | { | |
3122 | new_flags &= ~ E_FLAG_RX_SINSNS_MASK; | |
3123 | new_flags |= (old_flags & E_FLAG_RX_SINSNS_MASK); | |
3124 | } | |
3125 | } | |
3126 | else if (new_flags & E_FLAG_RX_SINSNS_SET) | |
3127 | { | |
3128 | old_flags &= ~ E_FLAG_RX_SINSNS_MASK; | |
3129 | old_flags |= (new_flags & E_FLAG_RX_SINSNS_MASK); | |
3130 | } | |
3131 | ||
708e2187 | 3132 | known_flags = E_FLAG_RX_ABI | E_FLAG_RX_64BIT_DOUBLES |
3525236c | 3133 | | E_FLAG_RX_DSP | E_FLAG_RX_PID | E_FLAG_RX_SINSNS_MASK; |
c7927a3c NC |
3134 | |
3135 | if ((old_flags ^ new_flags) & known_flags) | |
3136 | { | |
3137 | /* Only complain if flag bits we care about do not match. | |
3138 | Other bits may be set, since older binaries did use some | |
3139 | deprecated flags. */ | |
3140 | if (no_warn_mismatch) | |
3141 | { | |
3142 | elf_elfheader (obfd)->e_flags = (new_flags | old_flags) & known_flags; | |
3143 | } | |
3144 | else | |
3145 | { | |
dae82561 AM |
3146 | _bfd_error_handler (_("There is a conflict merging the" |
3147 | " ELF header flags from %B"), | |
3148 | ibfd); | |
695344c0 | 3149 | _bfd_error_handler (_(" the input file's flags: %s"), |
708e2187 | 3150 | describe_flags (new_flags)); |
695344c0 | 3151 | _bfd_error_handler (_(" the output file's flags: %s"), |
708e2187 | 3152 | describe_flags (old_flags)); |
c7927a3c NC |
3153 | error = TRUE; |
3154 | } | |
3155 | } | |
3156 | else | |
3157 | elf_elfheader (obfd)->e_flags = new_flags & known_flags; | |
3158 | } | |
3159 | ||
3160 | if (error) | |
3161 | bfd_set_error (bfd_error_bad_value); | |
3162 | ||
3163 | return !error; | |
3164 | } | |
3165 | \f | |
3166 | static bfd_boolean | |
3167 | rx_elf_print_private_bfd_data (bfd * abfd, void * ptr) | |
3168 | { | |
3169 | FILE * file = (FILE *) ptr; | |
3170 | flagword flags; | |
3171 | ||
3172 | BFD_ASSERT (abfd != NULL && ptr != NULL); | |
3173 | ||
3174 | /* Print normal ELF private data. */ | |
3175 | _bfd_elf_print_private_bfd_data (abfd, ptr); | |
3176 | ||
3177 | flags = elf_elfheader (abfd)->e_flags; | |
3178 | fprintf (file, _("private flags = 0x%lx:"), (long) flags); | |
3179 | ||
6d8a3ede | 3180 | fprintf (file, "%s", describe_flags (flags)); |
c7927a3c NC |
3181 | return TRUE; |
3182 | } | |
3183 | ||
3184 | /* Return the MACH for an e_flags value. */ | |
3185 | ||
3186 | static int | |
708e2187 | 3187 | elf32_rx_machine (bfd * abfd ATTRIBUTE_UNUSED) |
c7927a3c | 3188 | { |
708e2187 NC |
3189 | #if 0 /* FIXME: EF_RX_CPU_MASK collides with E_FLAG_RX_... |
3190 | Need to sort out how these flag bits are used. | |
07d6d2b8 | 3191 | For now we assume that the flags are OK. */ |
c7927a3c | 3192 | if ((elf_elfheader (abfd)->e_flags & EF_RX_CPU_MASK) == EF_RX_CPU_RX) |
708e2187 | 3193 | #endif |
c7927a3c NC |
3194 | return bfd_mach_rx; |
3195 | ||
3196 | return 0; | |
3197 | } | |
3198 | ||
3199 | static bfd_boolean | |
3200 | rx_elf_object_p (bfd * abfd) | |
3201 | { | |
1ce74905 DD |
3202 | int i; |
3203 | unsigned int u; | |
3204 | Elf_Internal_Phdr *phdr = elf_tdata (abfd)->phdr; | |
63920300 AM |
3205 | Elf_Internal_Ehdr *ehdr = elf_elfheader (abfd); |
3206 | int nphdrs = ehdr->e_phnum; | |
1ce74905 | 3207 | sec_ptr bsec; |
fc87b9e8 | 3208 | static int saw_be = FALSE; |
63920300 | 3209 | bfd_vma end_phdroff; |
1ce74905 | 3210 | |
4c422395 DD |
3211 | /* We never want to automatically choose the non-swapping big-endian |
3212 | target. The user can only get that explicitly, such as with -I | |
3213 | and objcopy. */ | |
6d00b590 | 3214 | if (abfd->xvec == &rx_elf32_be_ns_vec |
4c422395 DD |
3215 | && abfd->target_defaulted) |
3216 | return FALSE; | |
3217 | ||
fc87b9e8 DD |
3218 | /* BFD->target_defaulted is not set to TRUE when a target is chosen |
3219 | as a fallback, so we check for "scanning" to know when to stop | |
3220 | using the non-swapping target. */ | |
6d00b590 | 3221 | if (abfd->xvec == &rx_elf32_be_ns_vec |
fc87b9e8 DD |
3222 | && saw_be) |
3223 | return FALSE; | |
6d00b590 | 3224 | if (abfd->xvec == &rx_elf32_be_vec) |
fc87b9e8 DD |
3225 | saw_be = TRUE; |
3226 | ||
c7927a3c NC |
3227 | bfd_default_set_arch_mach (abfd, bfd_arch_rx, |
3228 | elf32_rx_machine (abfd)); | |
1ce74905 DD |
3229 | |
3230 | /* For each PHDR in the object, we must find some section that | |
3231 | corresponds (based on matching file offsets) and use its VMA | |
3232 | information to reconstruct the p_vaddr field we clobbered when we | |
3233 | wrote it out. */ | |
63920300 AM |
3234 | /* If PT_LOAD headers include the ELF file header or program headers |
3235 | then the PT_LOAD header does not start with some section contents. | |
3236 | Making adjustments based on the difference between sh_offset and | |
3237 | p_offset is nonsense in such cases. Exclude them. Note that | |
3238 | since standard linker scripts for RX do not use SIZEOF_HEADERS, | |
3239 | the linker won't normally create PT_LOAD segments covering the | |
3240 | headers so this is mainly for passing the ld testsuite. | |
3241 | FIXME. Why are we looking at non-PT_LOAD headers here? */ | |
3242 | end_phdroff = ehdr->e_ehsize; | |
3243 | if (ehdr->e_phoff != 0) | |
3244 | end_phdroff = ehdr->e_phoff + nphdrs * ehdr->e_phentsize; | |
1ce74905 DD |
3245 | for (i=0; i<nphdrs; i++) |
3246 | { | |
3247 | for (u=0; u<elf_tdata(abfd)->num_elf_sections; u++) | |
3248 | { | |
3249 | Elf_Internal_Shdr *sec = elf_tdata(abfd)->elf_sect_ptr[u]; | |
3250 | ||
74b1e045 | 3251 | if (phdr[i].p_filesz |
63920300 | 3252 | && phdr[i].p_offset >= end_phdroff |
74b1e045 | 3253 | && phdr[i].p_offset <= (bfd_vma) sec->sh_offset |
7859afc4 DD |
3254 | && sec->sh_size > 0 |
3255 | && sec->sh_type != SHT_NOBITS | |
1ce74905 DD |
3256 | && (bfd_vma)sec->sh_offset <= phdr[i].p_offset + (phdr[i].p_filesz - 1)) |
3257 | { | |
3258 | /* Found one! The difference between the two addresses, | |
3259 | plus the difference between the two file offsets, is | |
3260 | enough information to reconstruct the lma. */ | |
3261 | ||
3262 | /* Example where they aren't: | |
3263 | PHDR[1] = lma fffc0100 offset 00002010 size 00000100 | |
3264 | SEC[6] = vma 00000050 offset 00002050 size 00000040 | |
3265 | ||
3266 | The correct LMA for the section is fffc0140 + (2050-2010). | |
3267 | */ | |
3268 | ||
92ff23a1 | 3269 | phdr[i].p_vaddr = sec->sh_addr + (sec->sh_offset - phdr[i].p_offset); |
1ce74905 DD |
3270 | break; |
3271 | } | |
3272 | } | |
3273 | ||
3274 | /* We must update the bfd sections as well, so we don't stop | |
3275 | with one match. */ | |
3276 | bsec = abfd->sections; | |
3277 | while (bsec) | |
3278 | { | |
74b1e045 DD |
3279 | if (phdr[i].p_filesz |
3280 | && phdr[i].p_vaddr <= bsec->vma | |
1ce74905 DD |
3281 | && bsec->vma <= phdr[i].p_vaddr + (phdr[i].p_filesz - 1)) |
3282 | { | |
3283 | bsec->lma = phdr[i].p_paddr + (bsec->vma - phdr[i].p_vaddr); | |
3284 | } | |
3285 | bsec = bsec->next; | |
3286 | } | |
3287 | } | |
3288 | ||
c7927a3c NC |
3289 | return TRUE; |
3290 | } | |
3291 | \f | |
3292 | ||
3293 | #ifdef DEBUG | |
3294 | void | |
9ccb8af9 | 3295 | rx_dump_symtab (bfd * abfd, void * internal_syms, void * external_syms) |
c7927a3c NC |
3296 | { |
3297 | size_t locsymcount; | |
3298 | Elf_Internal_Sym * isymbuf; | |
3299 | Elf_Internal_Sym * isymend; | |
3300 | Elf_Internal_Sym * isym; | |
3301 | Elf_Internal_Shdr * symtab_hdr; | |
3302 | bfd_boolean free_internal = FALSE, free_external = FALSE; | |
3303 | char * st_info_str; | |
3304 | char * st_info_stb_str; | |
3305 | char * st_other_str; | |
3306 | char * st_shndx_str; | |
3307 | ||
3308 | if (! internal_syms) | |
3309 | { | |
3310 | internal_syms = bfd_malloc (1000); | |
3311 | free_internal = 1; | |
3312 | } | |
3313 | if (! external_syms) | |
3314 | { | |
3315 | external_syms = bfd_malloc (1000); | |
3316 | free_external = 1; | |
3317 | } | |
3318 | ||
3319 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; | |
3320 | locsymcount = symtab_hdr->sh_size / get_elf_backend_data (abfd)->s->sizeof_sym; | |
3321 | if (free_internal) | |
3322 | isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr, | |
3323 | symtab_hdr->sh_info, 0, | |
3324 | internal_syms, external_syms, NULL); | |
3325 | else | |
3326 | isymbuf = internal_syms; | |
3327 | isymend = isymbuf + locsymcount; | |
3328 | ||
3329 | for (isym = isymbuf ; isym < isymend ; isym++) | |
3330 | { | |
3331 | switch (ELF_ST_TYPE (isym->st_info)) | |
3332 | { | |
b707aa49 NC |
3333 | case STT_FUNC: st_info_str = "STT_FUNC"; break; |
3334 | case STT_SECTION: st_info_str = "STT_SECTION"; break; | |
3335 | case STT_FILE: st_info_str = "STT_FILE"; break; | |
3336 | case STT_OBJECT: st_info_str = "STT_OBJECT"; break; | |
3337 | case STT_TLS: st_info_str = "STT_TLS"; break; | |
c7927a3c NC |
3338 | default: st_info_str = ""; |
3339 | } | |
3340 | switch (ELF_ST_BIND (isym->st_info)) | |
3341 | { | |
b707aa49 NC |
3342 | case STB_LOCAL: st_info_stb_str = "STB_LOCAL"; break; |
3343 | case STB_GLOBAL: st_info_stb_str = "STB_GLOBAL"; break; | |
c7927a3c NC |
3344 | default: st_info_stb_str = ""; |
3345 | } | |
3346 | switch (ELF_ST_VISIBILITY (isym->st_other)) | |
3347 | { | |
b707aa49 NC |
3348 | case STV_DEFAULT: st_other_str = "STV_DEFAULT"; break; |
3349 | case STV_INTERNAL: st_other_str = "STV_INTERNAL"; break; | |
3350 | case STV_PROTECTED: st_other_str = "STV_PROTECTED"; break; | |
c7927a3c NC |
3351 | default: st_other_str = ""; |
3352 | } | |
3353 | switch (isym->st_shndx) | |
3354 | { | |
b707aa49 NC |
3355 | case SHN_ABS: st_shndx_str = "SHN_ABS"; break; |
3356 | case SHN_COMMON: st_shndx_str = "SHN_COMMON"; break; | |
3357 | case SHN_UNDEF: st_shndx_str = "SHN_UNDEF"; break; | |
c7927a3c NC |
3358 | default: st_shndx_str = ""; |
3359 | } | |
3360 | ||
3361 | printf ("isym = %p st_value = %lx st_size = %lx st_name = (%lu) %s " | |
3362 | "st_info = (%d) %s %s st_other = (%d) %s st_shndx = (%d) %s\n", | |
3363 | isym, | |
3364 | (unsigned long) isym->st_value, | |
3365 | (unsigned long) isym->st_size, | |
3366 | isym->st_name, | |
3367 | bfd_elf_string_from_elf_section (abfd, symtab_hdr->sh_link, | |
3368 | isym->st_name), | |
3369 | isym->st_info, st_info_str, st_info_stb_str, | |
3370 | isym->st_other, st_other_str, | |
3371 | isym->st_shndx, st_shndx_str); | |
3372 | } | |
3373 | if (free_internal) | |
3374 | free (internal_syms); | |
3375 | if (free_external) | |
3376 | free (external_syms); | |
3377 | } | |
3378 | ||
3379 | char * | |
3380 | rx_get_reloc (long reloc) | |
3381 | { | |
3382 | if (0 <= reloc && reloc < R_RX_max) | |
3383 | return rx_elf_howto_table[reloc].name; | |
3384 | return ""; | |
3385 | } | |
3386 | #endif /* DEBUG */ | |
3387 | ||
3388 | \f | |
3389 | /* We must take care to keep the on-disk copy of any code sections | |
3390 | that are fully linked swapped if the target is big endian, to match | |
3391 | the Renesas tools. */ | |
3392 | ||
3393 | /* The rule is: big endian object that are final-link executables, | |
3394 | have code sections stored with 32-bit words swapped relative to | |
3395 | what you'd get by default. */ | |
3396 | ||
3397 | static bfd_boolean | |
07d6d2b8 | 3398 | rx_get_section_contents (bfd * abfd, |
c7927a3c | 3399 | sec_ptr section, |
07d6d2b8 | 3400 | void * location, |
c7927a3c NC |
3401 | file_ptr offset, |
3402 | bfd_size_type count) | |
3403 | { | |
3404 | int exec = (abfd->flags & EXEC_P) ? 1 : 0; | |
3405 | int s_code = (section->flags & SEC_CODE) ? 1 : 0; | |
3406 | bfd_boolean rv; | |
3407 | ||
3408 | #ifdef DJDEBUG | |
3409 | fprintf (stderr, "dj: get %ld %ld from %s %s e%d sc%d %08lx:%08lx\n", | |
3410 | (long) offset, (long) count, section->name, | |
3411 | bfd_big_endian(abfd) ? "be" : "le", | |
3412 | exec, s_code, (long unsigned) section->filepos, | |
3413 | (long unsigned) offset); | |
3414 | #endif | |
3415 | ||
3416 | if (exec && s_code && bfd_big_endian (abfd)) | |
3417 | { | |
3418 | char * cloc = (char *) location; | |
3419 | bfd_size_type cnt, end_cnt; | |
3420 | ||
3421 | rv = TRUE; | |
3422 | ||
3423 | /* Fetch and swap unaligned bytes at the beginning. */ | |
3424 | if (offset % 4) | |
07d6d2b8 | 3425 | { |
c7927a3c NC |
3426 | char buf[4]; |
3427 | ||
3428 | rv = _bfd_generic_get_section_contents (abfd, section, buf, | |
07d6d2b8 | 3429 | (offset & -4), 4); |
c7927a3c NC |
3430 | if (!rv) |
3431 | return FALSE; | |
3432 | ||
3433 | bfd_putb32 (bfd_getl32 (buf), buf); | |
3434 | ||
3435 | cnt = 4 - (offset % 4); | |
3436 | if (cnt > count) | |
3437 | cnt = count; | |
3438 | ||
3439 | memcpy (location, buf + (offset % 4), cnt); | |
3440 | ||
3441 | count -= cnt; | |
3442 | offset += cnt; | |
3443 | cloc += count; | |
3444 | } | |
3445 | ||
3446 | end_cnt = count % 4; | |
3447 | ||
3448 | /* Fetch and swap the middle bytes. */ | |
3449 | if (count >= 4) | |
3450 | { | |
3451 | rv = _bfd_generic_get_section_contents (abfd, section, cloc, offset, | |
3452 | count - end_cnt); | |
3453 | if (!rv) | |
3454 | return FALSE; | |
3455 | ||
3456 | for (cnt = count; cnt >= 4; cnt -= 4, cloc += 4) | |
3457 | bfd_putb32 (bfd_getl32 (cloc), cloc); | |
3458 | } | |
3459 | ||
3460 | /* Fetch and swap the end bytes. */ | |
3461 | if (end_cnt > 0) | |
3462 | { | |
3463 | char buf[4]; | |
3464 | ||
3465 | /* Fetch the end bytes. */ | |
3466 | rv = _bfd_generic_get_section_contents (abfd, section, buf, | |
07d6d2b8 | 3467 | offset + count - end_cnt, 4); |
c7927a3c NC |
3468 | if (!rv) |
3469 | return FALSE; | |
3470 | ||
3471 | bfd_putb32 (bfd_getl32 (buf), buf); | |
3472 | memcpy (cloc, buf, end_cnt); | |
3473 | } | |
3474 | } | |
3475 | else | |
3476 | rv = _bfd_generic_get_section_contents (abfd, section, location, offset, count); | |
3477 | ||
3478 | return rv; | |
3479 | } | |
3480 | ||
3481 | #ifdef DJDEBUG | |
3482 | static bfd_boolean | |
07d6d2b8 | 3483 | rx2_set_section_contents (bfd * abfd, |
c7927a3c NC |
3484 | sec_ptr section, |
3485 | const void * location, | |
3486 | file_ptr offset, | |
3487 | bfd_size_type count) | |
3488 | { | |
3489 | bfd_size_type i; | |
3490 | ||
3491 | fprintf (stderr, " set sec %s %08x loc %p offset %#x count %#x\n", | |
3492 | section->name, (unsigned) section->vma, location, (int) offset, (int) count); | |
3493 | for (i = 0; i < count; i++) | |
3494 | { | |
3495 | if (i % 16 == 0 && i > 0) | |
3496 | fprintf (stderr, "\n"); | |
3497 | ||
3498 | if (i % 16 && i % 4 == 0) | |
3499 | fprintf (stderr, " "); | |
3500 | ||
3501 | if (i % 16 == 0) | |
3502 | fprintf (stderr, " %08x:", (int) (section->vma + offset + i)); | |
3503 | ||
3504 | fprintf (stderr, " %02x", ((unsigned char *) location)[i]); | |
3505 | } | |
3506 | fprintf (stderr, "\n"); | |
3507 | ||
3508 | return _bfd_elf_set_section_contents (abfd, section, location, offset, count); | |
3509 | } | |
3510 | #define _bfd_elf_set_section_contents rx2_set_section_contents | |
3511 | #endif | |
3512 | ||
3513 | static bfd_boolean | |
07d6d2b8 | 3514 | rx_set_section_contents (bfd * abfd, |
c7927a3c NC |
3515 | sec_ptr section, |
3516 | const void * location, | |
3517 | file_ptr offset, | |
3518 | bfd_size_type count) | |
3519 | { | |
3520 | bfd_boolean exec = (abfd->flags & EXEC_P) ? TRUE : FALSE; | |
3521 | bfd_boolean s_code = (section->flags & SEC_CODE) ? TRUE : FALSE; | |
3522 | bfd_boolean rv; | |
3523 | char * swapped_data = NULL; | |
3524 | bfd_size_type i; | |
3525 | bfd_vma caddr = section->vma + offset; | |
3526 | file_ptr faddr = 0; | |
3527 | bfd_size_type scount; | |
3528 | ||
3529 | #ifdef DJDEBUG | |
3530 | bfd_size_type i; | |
3531 | ||
3532 | fprintf (stderr, "\ndj: set %ld %ld to %s %s e%d sc%d\n", | |
3533 | (long) offset, (long) count, section->name, | |
3534 | bfd_big_endian (abfd) ? "be" : "le", | |
3535 | exec, s_code); | |
3536 | ||
3537 | for (i = 0; i < count; i++) | |
3538 | { | |
3539 | int a = section->vma + offset + i; | |
3540 | ||
3541 | if (a % 16 == 0 && a > 0) | |
3542 | fprintf (stderr, "\n"); | |
3543 | ||
3544 | if (a % 16 && a % 4 == 0) | |
3545 | fprintf (stderr, " "); | |
3546 | ||
3547 | if (a % 16 == 0 || i == 0) | |
3548 | fprintf (stderr, " %08x:", (int) (section->vma + offset + i)); | |
3549 | ||
3550 | fprintf (stderr, " %02x", ((unsigned char *) location)[i]); | |
3551 | } | |
3552 | ||
3553 | fprintf (stderr, "\n"); | |
3554 | #endif | |
3555 | ||
3556 | if (! exec || ! s_code || ! bfd_big_endian (abfd)) | |
3557 | return _bfd_elf_set_section_contents (abfd, section, location, offset, count); | |
3558 | ||
3559 | while (count > 0 && caddr > 0 && caddr % 4) | |
3560 | { | |
3561 | switch (caddr % 4) | |
3562 | { | |
3563 | case 0: faddr = offset + 3; break; | |
3564 | case 1: faddr = offset + 1; break; | |
3565 | case 2: faddr = offset - 1; break; | |
3566 | case 3: faddr = offset - 3; break; | |
3567 | } | |
3568 | ||
3569 | rv = _bfd_elf_set_section_contents (abfd, section, location, faddr, 1); | |
3570 | if (! rv) | |
3571 | return rv; | |
3572 | ||
28cc9170 | 3573 | location = (bfd_byte *) location + 1; |
c7927a3c NC |
3574 | offset ++; |
3575 | count --; | |
3576 | caddr ++; | |
3577 | } | |
3578 | ||
3579 | scount = (int)(count / 4) * 4; | |
3580 | if (scount > 0) | |
3581 | { | |
3582 | char * cloc = (char *) location; | |
3583 | ||
3584 | swapped_data = (char *) bfd_alloc (abfd, count); | |
3585 | ||
3586 | for (i = 0; i < count; i += 4) | |
3587 | { | |
3588 | bfd_vma v = bfd_getl32 (cloc + i); | |
3589 | bfd_putb32 (v, swapped_data + i); | |
3590 | } | |
3591 | ||
3592 | rv = _bfd_elf_set_section_contents (abfd, section, swapped_data, offset, scount); | |
3593 | ||
3594 | if (!rv) | |
3595 | return rv; | |
3596 | } | |
3597 | ||
3598 | count -= scount; | |
28cc9170 | 3599 | location = (bfd_byte *) location + scount; |
c7927a3c NC |
3600 | offset += scount; |
3601 | ||
3602 | if (count > 0) | |
3603 | { | |
3604 | caddr = section->vma + offset; | |
3605 | while (count > 0) | |
3606 | { | |
3607 | switch (caddr % 4) | |
3608 | { | |
3609 | case 0: faddr = offset + 3; break; | |
3610 | case 1: faddr = offset + 1; break; | |
3611 | case 2: faddr = offset - 1; break; | |
3612 | case 3: faddr = offset - 3; break; | |
3613 | } | |
3614 | rv = _bfd_elf_set_section_contents (abfd, section, location, faddr, 1); | |
3615 | if (! rv) | |
3616 | return rv; | |
3617 | ||
28cc9170 | 3618 | location = (bfd_byte *) location + 1; |
c7927a3c NC |
3619 | offset ++; |
3620 | count --; | |
3621 | caddr ++; | |
3622 | } | |
3623 | } | |
3624 | ||
3625 | return TRUE; | |
3626 | } | |
3627 | ||
3628 | static bfd_boolean | |
3629 | rx_final_link (bfd * abfd, struct bfd_link_info * info) | |
3630 | { | |
3631 | asection * o; | |
3632 | ||
3633 | for (o = abfd->sections; o != NULL; o = o->next) | |
3634 | { | |
3635 | #ifdef DJDEBUG | |
3636 | fprintf (stderr, "sec %s fl %x vma %lx lma %lx size %lx raw %lx\n", | |
3637 | o->name, o->flags, o->vma, o->lma, o->size, o->rawsize); | |
3638 | #endif | |
3639 | if (o->flags & SEC_CODE | |
3640 | && bfd_big_endian (abfd) | |
e57278ef | 3641 | && o->size % 4) |
c7927a3c NC |
3642 | { |
3643 | #ifdef DJDEBUG | |
3644 | fprintf (stderr, "adjusting...\n"); | |
3645 | #endif | |
3646 | o->size += 4 - (o->size % 4); | |
c7927a3c NC |
3647 | } |
3648 | } | |
3649 | ||
3650 | return bfd_elf_final_link (abfd, info); | |
3651 | } | |
3652 | ||
3653 | static bfd_boolean | |
3654 | elf32_rx_modify_program_headers (bfd * abfd ATTRIBUTE_UNUSED, | |
3655 | struct bfd_link_info * info ATTRIBUTE_UNUSED) | |
3656 | { | |
3657 | const struct elf_backend_data * bed; | |
3658 | struct elf_obj_tdata * tdata; | |
3659 | Elf_Internal_Phdr * phdr; | |
3660 | unsigned int count; | |
3661 | unsigned int i; | |
3662 | ||
3663 | bed = get_elf_backend_data (abfd); | |
3664 | tdata = elf_tdata (abfd); | |
3665 | phdr = tdata->phdr; | |
12bd6957 | 3666 | count = elf_program_header_size (abfd) / bed->s->sizeof_phdr; |
c7927a3c | 3667 | |
84bff83f NC |
3668 | if (ignore_lma) |
3669 | for (i = count; i-- != 0;) | |
3670 | if (phdr[i].p_type == PT_LOAD) | |
3671 | { | |
3672 | /* The Renesas tools expect p_paddr to be zero. However, | |
3673 | there is no other way to store the writable data in ROM for | |
3674 | startup initialization. So, we let the linker *think* | |
3675 | we're using paddr and vaddr the "usual" way, but at the | |
3676 | last minute we move the paddr into the vaddr (which is what | |
3677 | the simulator uses) and zero out paddr. Note that this | |
3678 | does not affect the section headers, just the program | |
3679 | headers. We hope. */ | |
c7927a3c | 3680 | phdr[i].p_vaddr = phdr[i].p_paddr; |
84bff83f | 3681 | #if 0 /* If we zero out p_paddr, then the LMA in the section table |
c7927a3c | 3682 | becomes wrong. */ |
84bff83f NC |
3683 | phdr[i].p_paddr = 0; |
3684 | #endif | |
3685 | } | |
c7927a3c NC |
3686 | |
3687 | return TRUE; | |
3688 | } | |
708e2187 NC |
3689 | |
3690 | /* The default literal sections should always be marked as "code" (i.e., | |
3691 | SHF_EXECINSTR). This is particularly important for big-endian mode | |
3692 | when we do not want their contents byte reversed. */ | |
3693 | static const struct bfd_elf_special_section elf32_rx_special_sections[] = | |
3694 | { | |
07d6d2b8 AM |
3695 | { STRING_COMMA_LEN (".init_array"), 0, SHT_INIT_ARRAY, SHF_ALLOC + SHF_EXECINSTR }, |
3696 | { STRING_COMMA_LEN (".fini_array"), 0, SHT_FINI_ARRAY, SHF_ALLOC + SHF_EXECINSTR }, | |
708e2187 | 3697 | { STRING_COMMA_LEN (".preinit_array"), 0, SHT_PREINIT_ARRAY, SHF_ALLOC + SHF_EXECINSTR }, |
07d6d2b8 | 3698 | { NULL, 0, 0, 0, 0 } |
708e2187 | 3699 | }; |
7a2f2d82 DD |
3700 | \f |
3701 | typedef struct { | |
3702 | bfd *abfd; | |
3703 | struct bfd_link_info *info; | |
3704 | bfd_vma table_start; | |
3705 | int table_size; | |
3706 | bfd_vma *table_handlers; | |
3707 | bfd_vma table_default_handler; | |
3708 | struct bfd_link_hash_entry **table_entries; | |
3709 | struct bfd_link_hash_entry *table_default_entry; | |
3710 | FILE *mapfile; | |
3711 | } RX_Table_Info; | |
3712 | ||
3713 | static bfd_boolean | |
3714 | rx_table_find (struct bfd_hash_entry *vent, void *vinfo) | |
3715 | { | |
3716 | RX_Table_Info *info = (RX_Table_Info *)vinfo; | |
3717 | struct bfd_link_hash_entry *ent = (struct bfd_link_hash_entry *)vent; | |
3718 | const char *name; /* of the symbol we've found */ | |
3719 | asection *sec; | |
3720 | struct bfd *abfd; | |
3721 | int idx; | |
3722 | const char *tname; /* name of the table */ | |
3723 | bfd_vma start_addr, end_addr; | |
3724 | char *buf; | |
3725 | struct bfd_link_hash_entry * h; | |
3726 | ||
3727 | /* We're looking for globally defined symbols of the form | |
3728 | $tablestart$<NAME>. */ | |
3729 | if (ent->type != bfd_link_hash_defined | |
3730 | && ent->type != bfd_link_hash_defweak) | |
3731 | return TRUE; | |
3732 | ||
3733 | name = ent->root.string; | |
3734 | sec = ent->u.def.section; | |
3735 | abfd = sec->owner; | |
3736 | ||
3737 | if (strncmp (name, "$tablestart$", 12)) | |
3738 | return TRUE; | |
3739 | ||
3740 | sec->flags |= SEC_KEEP; | |
3741 | ||
3742 | tname = name + 12; | |
3743 | ||
3744 | start_addr = ent->u.def.value; | |
3745 | ||
3746 | /* At this point, we can't build the table but we can (and must) | |
3747 | find all the related symbols and mark their sections as SEC_KEEP | |
3748 | so we don't garbage collect them. */ | |
3749 | ||
3750 | buf = (char *) malloc (12 + 10 + strlen (tname)); | |
3751 | ||
3752 | sprintf (buf, "$tableend$%s", tname); | |
3753 | h = bfd_link_hash_lookup (info->info->hash, buf, FALSE, FALSE, TRUE); | |
3754 | if (!h || (h->type != bfd_link_hash_defined | |
3755 | && h->type != bfd_link_hash_defweak)) | |
3756 | { | |
695344c0 | 3757 | /* xgettext:c-format */ |
7a2f2d82 DD |
3758 | _bfd_error_handler (_("%B:%A: table %s missing corresponding %s"), |
3759 | abfd, sec, name, buf); | |
3760 | return TRUE; | |
3761 | } | |
3762 | ||
3763 | if (h->u.def.section != ent->u.def.section) | |
3764 | { | |
695344c0 | 3765 | /* xgettext:c-format */ |
7a2f2d82 DD |
3766 | _bfd_error_handler (_("%B:%A: %s and %s must be in the same input section"), |
3767 | h->u.def.section->owner, h->u.def.section, | |
3768 | name, buf); | |
3769 | return TRUE; | |
3770 | } | |
3771 | ||
3772 | end_addr = h->u.def.value; | |
3773 | ||
3774 | sprintf (buf, "$tableentry$default$%s", tname); | |
3775 | h = bfd_link_hash_lookup (info->info->hash, buf, FALSE, FALSE, TRUE); | |
3776 | if (h && (h->type == bfd_link_hash_defined | |
3777 | || h->type == bfd_link_hash_defweak)) | |
3778 | { | |
3779 | h->u.def.section->flags |= SEC_KEEP; | |
3780 | } | |
3781 | ||
3782 | for (idx = 0; idx < (int) (end_addr - start_addr) / 4; idx ++) | |
3783 | { | |
3784 | sprintf (buf, "$tableentry$%d$%s", idx, tname); | |
3785 | h = bfd_link_hash_lookup (info->info->hash, buf, FALSE, FALSE, TRUE); | |
3786 | if (h && (h->type == bfd_link_hash_defined | |
3787 | || h->type == bfd_link_hash_defweak)) | |
3788 | { | |
3789 | h->u.def.section->flags |= SEC_KEEP; | |
3790 | } | |
3791 | } | |
3792 | ||
3793 | /* Return TRUE to keep scanning, FALSE to end the traversal. */ | |
3794 | return TRUE; | |
3795 | } | |
3796 | ||
3797 | /* We need to check for table entry symbols and build the tables, and | |
3798 | we need to do it before the linker does garbage collection. This function is | |
3799 | called once per input object file. */ | |
3800 | static bfd_boolean | |
3801 | rx_check_directives | |
07d6d2b8 | 3802 | (bfd * abfd ATTRIBUTE_UNUSED, |
7a2f2d82 DD |
3803 | struct bfd_link_info * info ATTRIBUTE_UNUSED) |
3804 | { | |
3805 | RX_Table_Info stuff; | |
3806 | ||
3807 | stuff.abfd = abfd; | |
3808 | stuff.info = info; | |
3809 | bfd_hash_traverse (&(info->hash->table), rx_table_find, &stuff); | |
3810 | ||
3811 | return TRUE; | |
3812 | } | |
3813 | ||
3814 | \f | |
3815 | static bfd_boolean | |
3816 | rx_table_map_2 (struct bfd_hash_entry *vent, void *vinfo) | |
3817 | { | |
3818 | RX_Table_Info *info = (RX_Table_Info *)vinfo; | |
3819 | struct bfd_link_hash_entry *ent = (struct bfd_link_hash_entry *)vent; | |
3820 | int idx; | |
3821 | const char *name; | |
3822 | bfd_vma addr; | |
3823 | ||
3824 | /* See if the symbol ENT has an address listed in the table, and | |
3825 | isn't a debug/special symbol. If so, put it in the table. */ | |
3826 | ||
3827 | if (ent->type != bfd_link_hash_defined | |
3828 | && ent->type != bfd_link_hash_defweak) | |
3829 | return TRUE; | |
3830 | ||
3831 | name = ent->root.string; | |
3832 | ||
3833 | if (name[0] == '$' || name[0] == '.' || name[0] < ' ') | |
3834 | return TRUE; | |
3835 | ||
3836 | addr = (ent->u.def.value | |
3837 | + ent->u.def.section->output_section->vma | |
3838 | + ent->u.def.section->output_offset); | |
3839 | ||
3840 | for (idx = 0; idx < info->table_size; idx ++) | |
3841 | if (addr == info->table_handlers[idx]) | |
3842 | info->table_entries[idx] = ent; | |
3843 | ||
3844 | if (addr == info->table_default_handler) | |
3845 | info->table_default_entry = ent; | |
3846 | ||
3847 | return TRUE; | |
3848 | } | |
3849 | ||
3850 | static bfd_boolean | |
3851 | rx_table_map (struct bfd_hash_entry *vent, void *vinfo) | |
3852 | { | |
3853 | RX_Table_Info *info = (RX_Table_Info *)vinfo; | |
3854 | struct bfd_link_hash_entry *ent = (struct bfd_link_hash_entry *)vent; | |
3855 | const char *name; /* of the symbol we've found */ | |
7a2f2d82 DD |
3856 | int idx; |
3857 | const char *tname; /* name of the table */ | |
3858 | bfd_vma start_addr, end_addr; | |
3859 | char *buf; | |
3860 | struct bfd_link_hash_entry * h; | |
3861 | int need_elipses; | |
3862 | ||
3863 | /* We're looking for globally defined symbols of the form | |
3864 | $tablestart$<NAME>. */ | |
3865 | if (ent->type != bfd_link_hash_defined | |
3866 | && ent->type != bfd_link_hash_defweak) | |
3867 | return TRUE; | |
3868 | ||
3869 | name = ent->root.string; | |
7a2f2d82 DD |
3870 | |
3871 | if (strncmp (name, "$tablestart$", 12)) | |
3872 | return TRUE; | |
3873 | ||
3874 | tname = name + 12; | |
3875 | start_addr = (ent->u.def.value | |
3876 | + ent->u.def.section->output_section->vma | |
3877 | + ent->u.def.section->output_offset); | |
3878 | ||
3879 | buf = (char *) malloc (12 + 10 + strlen (tname)); | |
3880 | ||
3881 | sprintf (buf, "$tableend$%s", tname); | |
3882 | end_addr = get_symbol_value_maybe (buf, info->info); | |
3883 | ||
3884 | sprintf (buf, "$tableentry$default$%s", tname); | |
3885 | h = bfd_link_hash_lookup (info->info->hash, buf, FALSE, FALSE, TRUE); | |
3886 | if (h) | |
3887 | { | |
3888 | info->table_default_handler = (h->u.def.value | |
3889 | + h->u.def.section->output_section->vma | |
3890 | + h->u.def.section->output_offset); | |
3891 | } | |
3892 | else | |
3893 | /* Zero is a valid handler address! */ | |
3894 | info->table_default_handler = (bfd_vma) (-1); | |
3895 | info->table_default_entry = NULL; | |
3896 | ||
3897 | info->table_start = start_addr; | |
3898 | info->table_size = (int) (end_addr - start_addr) / 4; | |
3899 | info->table_handlers = (bfd_vma *) malloc (info->table_size * sizeof (bfd_vma)); | |
3900 | info->table_entries = (struct bfd_link_hash_entry **) malloc (info->table_size * sizeof (struct bfd_link_hash_entry)); | |
3901 | ||
3902 | for (idx = 0; idx < (int) (end_addr - start_addr) / 4; idx ++) | |
3903 | { | |
3904 | sprintf (buf, "$tableentry$%d$%s", idx, tname); | |
3905 | h = bfd_link_hash_lookup (info->info->hash, buf, FALSE, FALSE, TRUE); | |
3906 | if (h && (h->type == bfd_link_hash_defined | |
3907 | || h->type == bfd_link_hash_defweak)) | |
3908 | { | |
3909 | info->table_handlers[idx] = (h->u.def.value | |
3910 | + h->u.def.section->output_section->vma | |
3911 | + h->u.def.section->output_offset); | |
3912 | } | |
3913 | else | |
3914 | info->table_handlers[idx] = info->table_default_handler; | |
3915 | info->table_entries[idx] = NULL; | |
3916 | } | |
3917 | ||
3918 | free (buf); | |
3919 | ||
3920 | bfd_hash_traverse (&(info->info->hash->table), rx_table_map_2, info); | |
3921 | ||
33ac0ca1 | 3922 | fprintf (info->mapfile, "\nRX Vector Table: %s has %d entries at 0x%08" BFD_VMA_FMT "x\n\n", |
7a2f2d82 DD |
3923 | tname, info->table_size, start_addr); |
3924 | ||
3925 | if (info->table_default_entry) | |
33ac0ca1 | 3926 | fprintf (info->mapfile, " default handler is: %s at 0x%08" BFD_VMA_FMT "x\n", |
7a2f2d82 DD |
3927 | info->table_default_entry->root.string, |
3928 | info->table_default_handler); | |
3929 | else if (info->table_default_handler != (bfd_vma)(-1)) | |
33ac0ca1 | 3930 | fprintf (info->mapfile, " default handler is at 0x%08" BFD_VMA_FMT "x\n", |
7a2f2d82 DD |
3931 | info->table_default_handler); |
3932 | else | |
3933 | fprintf (info->mapfile, " no default handler\n"); | |
3934 | ||
3935 | need_elipses = 1; | |
3936 | for (idx = 0; idx < info->table_size; idx ++) | |
3937 | { | |
3938 | if (info->table_handlers[idx] == info->table_default_handler) | |
3939 | { | |
3940 | if (need_elipses) | |
3941 | fprintf (info->mapfile, " . . .\n"); | |
3942 | need_elipses = 0; | |
3943 | continue; | |
3944 | } | |
3945 | need_elipses = 1; | |
3946 | ||
33ac0ca1 | 3947 | fprintf (info->mapfile, " 0x%08" BFD_VMA_FMT "x [%3d] ", start_addr + 4 * idx, idx); |
7a2f2d82 DD |
3948 | |
3949 | if (info->table_handlers[idx] == (bfd_vma) (-1)) | |
3950 | fprintf (info->mapfile, "(no handler found)\n"); | |
3951 | ||
3952 | else if (info->table_handlers[idx] == info->table_default_handler) | |
3953 | { | |
3954 | if (info->table_default_entry) | |
3955 | fprintf (info->mapfile, "(default)\n"); | |
3956 | else | |
3957 | fprintf (info->mapfile, "(default)\n"); | |
3958 | } | |
3959 | ||
3960 | else if (info->table_entries[idx]) | |
3961 | { | |
33ac0ca1 | 3962 | fprintf (info->mapfile, "0x%08" BFD_VMA_FMT "x %s\n", info->table_handlers[idx], info->table_entries[idx]->root.string); |
7a2f2d82 DD |
3963 | } |
3964 | ||
3965 | else | |
3966 | { | |
33ac0ca1 | 3967 | fprintf (info->mapfile, "0x%08" BFD_VMA_FMT "x ???\n", info->table_handlers[idx]); |
7a2f2d82 DD |
3968 | } |
3969 | } | |
3970 | if (need_elipses) | |
3971 | fprintf (info->mapfile, " . . .\n"); | |
3972 | ||
3973 | return TRUE; | |
3974 | } | |
3975 | ||
3976 | void | |
3977 | rx_additional_link_map_text (bfd *obfd, struct bfd_link_info *info, FILE *mapfile) | |
3978 | { | |
3979 | /* We scan the symbol table looking for $tableentry$'s, and for | |
3980 | each, try to deduce which handlers go with which entries. */ | |
3981 | ||
3982 | RX_Table_Info stuff; | |
3983 | ||
3984 | stuff.abfd = obfd; | |
3985 | stuff.info = info; | |
3986 | stuff.mapfile = mapfile; | |
3987 | bfd_hash_traverse (&(info->hash->table), rx_table_map, &stuff); | |
3988 | } | |
3989 | ||
c7927a3c NC |
3990 | \f |
3991 | #define ELF_ARCH bfd_arch_rx | |
3992 | #define ELF_MACHINE_CODE EM_RX | |
3993 | #define ELF_MAXPAGESIZE 0x1000 | |
3994 | ||
6d00b590 | 3995 | #define TARGET_BIG_SYM rx_elf32_be_vec |
c7927a3c NC |
3996 | #define TARGET_BIG_NAME "elf32-rx-be" |
3997 | ||
6d00b590 | 3998 | #define TARGET_LITTLE_SYM rx_elf32_le_vec |
c7927a3c NC |
3999 | #define TARGET_LITTLE_NAME "elf32-rx-le" |
4000 | ||
4001 | #define elf_info_to_howto_rel NULL | |
4002 | #define elf_info_to_howto rx_info_to_howto_rela | |
4003 | #define elf_backend_object_p rx_elf_object_p | |
4004 | #define elf_backend_relocate_section rx_elf_relocate_section | |
07d6d2b8 | 4005 | #define elf_symbol_leading_char ('_') |
c7927a3c NC |
4006 | #define elf_backend_can_gc_sections 1 |
4007 | #define elf_backend_modify_program_headers elf32_rx_modify_program_headers | |
4008 | ||
4009 | #define bfd_elf32_bfd_reloc_type_lookup rx_reloc_type_lookup | |
4010 | #define bfd_elf32_bfd_reloc_name_lookup rx_reloc_name_lookup | |
4011 | #define bfd_elf32_bfd_set_private_flags rx_elf_set_private_flags | |
4012 | #define bfd_elf32_bfd_merge_private_bfd_data rx_elf_merge_private_bfd_data | |
4013 | #define bfd_elf32_bfd_print_private_bfd_data rx_elf_print_private_bfd_data | |
4014 | #define bfd_elf32_get_section_contents rx_get_section_contents | |
4015 | #define bfd_elf32_set_section_contents rx_set_section_contents | |
4016 | #define bfd_elf32_bfd_final_link rx_final_link | |
4017 | #define bfd_elf32_bfd_relax_section elf32_rx_relax_section_wrapper | |
07d6d2b8 | 4018 | #define elf_backend_special_sections elf32_rx_special_sections |
7a2f2d82 | 4019 | #define elf_backend_check_directives rx_check_directives |
c7927a3c NC |
4020 | |
4021 | #include "elf32-target.h" | |
4c422395 DD |
4022 | |
4023 | /* We define a second big-endian target that doesn't have the custom | |
4024 | section get/set hooks, for times when we want to preserve the | |
4025 | pre-swapped .text sections (like objcopy). */ | |
4026 | ||
07d6d2b8 | 4027 | #undef TARGET_BIG_SYM |
6d00b590 | 4028 | #define TARGET_BIG_SYM rx_elf32_be_ns_vec |
07d6d2b8 | 4029 | #undef TARGET_BIG_NAME |
4c422395 | 4030 | #define TARGET_BIG_NAME "elf32-rx-be-ns" |
07d6d2b8 | 4031 | #undef TARGET_LITTLE_SYM |
4c422395 DD |
4032 | |
4033 | #undef bfd_elf32_get_section_contents | |
4034 | #undef bfd_elf32_set_section_contents | |
4035 | ||
4036 | #undef elf32_bed | |
4037 | #define elf32_bed elf32_rx_be_ns_bed | |
4038 | ||
4039 | #include "elf32-target.h" |