Commit | Line | Data |
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c7927a3c | 1 | /* tc-rx.c -- Assembler for the Renesas RX |
b90efa5b | 2 | Copyright (C) 2008-2015 Free Software Foundation, Inc. |
c7927a3c NC |
3 | |
4 | This file is part of GAS, the GNU Assembler. | |
5 | ||
6 | GAS 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, or (at your option) | |
9 | any later version. | |
10 | ||
11 | GAS 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 GAS; see the file COPYING. If not, write to the Free | |
18 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA | |
19 | 02110-1301, USA. */ | |
20 | ||
21 | #include "as.h" | |
22 | #include "struc-symbol.h" | |
c7927a3c NC |
23 | #include "safe-ctype.h" |
24 | #include "dwarf2dbg.h" | |
25 | #include "libbfd.h" | |
26 | #include "elf/common.h" | |
27 | #include "elf/rx.h" | |
28 | #include "rx-defs.h" | |
29 | #include "filenames.h" | |
30 | #include "listing.h" | |
31 | #include "sb.h" | |
32 | #include "macro.h" | |
33 | ||
34 | #define RX_OPCODE_BIG_ENDIAN 0 | |
35 | ||
36 | const char comment_chars[] = ";"; | |
37 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
38 | first line of the input file. This is because the compiler outputs | |
39 | #NO_APP at the beginning of its output. */ | |
40 | const char line_comment_chars[] = "#"; | |
41 | const char line_separator_chars[] = "!"; | |
42 | ||
43 | const char EXP_CHARS[] = "eE"; | |
44 | const char FLT_CHARS[] = "dD"; | |
45 | \f | |
46 | /* ELF flags to set in the output file header. */ | |
708e2187 | 47 | static int elf_flags = E_FLAG_RX_ABI; |
c7927a3c NC |
48 | |
49 | bfd_boolean rx_use_conventional_section_names = FALSE; | |
50 | static bfd_boolean rx_use_small_data_limit = FALSE; | |
51 | ||
d4cb0ea0 NC |
52 | static bfd_boolean rx_pid_mode = FALSE; |
53 | static int rx_num_int_regs = 0; | |
54 | int rx_pid_register; | |
55 | int rx_gp_register; | |
56 | ||
f0c00282 NC |
57 | enum rx_cpu_types rx_cpu = RX600; |
58 | ||
0e25bcb4 DD |
59 | static void rx_fetchalign (int ignore ATTRIBUTE_UNUSED); |
60 | ||
c7927a3c NC |
61 | enum options |
62 | { | |
63 | OPTION_BIG = OPTION_MD_BASE, | |
64 | OPTION_LITTLE, | |
65 | OPTION_32BIT_DOUBLES, | |
66 | OPTION_64BIT_DOUBLES, | |
67 | OPTION_CONVENTIONAL_SECTION_NAMES, | |
68 | OPTION_RENESAS_SECTION_NAMES, | |
69 | OPTION_SMALL_DATA_LIMIT, | |
d4cb0ea0 NC |
70 | OPTION_RELAX, |
71 | OPTION_PID, | |
72 | OPTION_INT_REGS, | |
708e2187 NC |
73 | OPTION_USES_GCC_ABI, |
74 | OPTION_USES_RX_ABI, | |
f0c00282 | 75 | OPTION_CPU, |
c7927a3c NC |
76 | }; |
77 | ||
78 | #define RX_SHORTOPTS "" | |
79 | const char * md_shortopts = RX_SHORTOPTS; | |
80 | ||
81 | /* Assembler options. */ | |
82 | struct option md_longopts[] = | |
83 | { | |
84 | {"mbig-endian-data", no_argument, NULL, OPTION_BIG}, | |
85 | {"mlittle-endian-data", no_argument, NULL, OPTION_LITTLE}, | |
86 | /* The next two switches are here because the | |
87 | generic parts of the linker testsuite uses them. */ | |
88 | {"EB", no_argument, NULL, OPTION_BIG}, | |
89 | {"EL", no_argument, NULL, OPTION_LITTLE}, | |
90 | {"m32bit-doubles", no_argument, NULL, OPTION_32BIT_DOUBLES}, | |
91 | {"m64bit-doubles", no_argument, NULL, OPTION_64BIT_DOUBLES}, | |
92 | /* This option is here mainly for the binutils testsuites, | |
93 | as many of their tests assume conventional section naming. */ | |
94 | {"muse-conventional-section-names", no_argument, NULL, OPTION_CONVENTIONAL_SECTION_NAMES}, | |
95 | {"muse-renesas-section-names", no_argument, NULL, OPTION_RENESAS_SECTION_NAMES}, | |
96 | {"msmall-data-limit", no_argument, NULL, OPTION_SMALL_DATA_LIMIT}, | |
97 | {"relax", no_argument, NULL, OPTION_RELAX}, | |
d4cb0ea0 NC |
98 | {"mpid", no_argument, NULL, OPTION_PID}, |
99 | {"mint-register", required_argument, NULL, OPTION_INT_REGS}, | |
708e2187 NC |
100 | {"mgcc-abi", no_argument, NULL, OPTION_USES_GCC_ABI}, |
101 | {"mrx-abi", no_argument, NULL, OPTION_USES_RX_ABI}, | |
f0c00282 | 102 | {"mcpu",required_argument,NULL,OPTION_CPU}, |
c7927a3c NC |
103 | {NULL, no_argument, NULL, 0} |
104 | }; | |
105 | size_t md_longopts_size = sizeof (md_longopts); | |
106 | ||
107 | int | |
108 | md_parse_option (int c ATTRIBUTE_UNUSED, char * arg ATTRIBUTE_UNUSED) | |
109 | { | |
110 | switch (c) | |
111 | { | |
112 | case OPTION_BIG: | |
113 | target_big_endian = 1; | |
114 | return 1; | |
115 | ||
116 | case OPTION_LITTLE: | |
117 | target_big_endian = 0; | |
118 | return 1; | |
119 | ||
120 | case OPTION_32BIT_DOUBLES: | |
121 | elf_flags &= ~ E_FLAG_RX_64BIT_DOUBLES; | |
122 | return 1; | |
123 | ||
124 | case OPTION_64BIT_DOUBLES: | |
125 | elf_flags |= E_FLAG_RX_64BIT_DOUBLES; | |
126 | return 1; | |
127 | ||
128 | case OPTION_CONVENTIONAL_SECTION_NAMES: | |
129 | rx_use_conventional_section_names = TRUE; | |
130 | return 1; | |
131 | ||
132 | case OPTION_RENESAS_SECTION_NAMES: | |
133 | rx_use_conventional_section_names = FALSE; | |
134 | return 1; | |
135 | ||
136 | case OPTION_SMALL_DATA_LIMIT: | |
137 | rx_use_small_data_limit = TRUE; | |
138 | return 1; | |
139 | ||
140 | case OPTION_RELAX: | |
141 | linkrelax = 1; | |
142 | return 1; | |
d4cb0ea0 NC |
143 | |
144 | case OPTION_PID: | |
145 | rx_pid_mode = TRUE; | |
146 | elf_flags |= E_FLAG_RX_PID; | |
147 | return 1; | |
148 | ||
149 | case OPTION_INT_REGS: | |
150 | rx_num_int_regs = atoi (optarg); | |
151 | return 1; | |
708e2187 NC |
152 | |
153 | case OPTION_USES_GCC_ABI: | |
154 | elf_flags &= ~ E_FLAG_RX_ABI; | |
155 | return 1; | |
156 | ||
157 | case OPTION_USES_RX_ABI: | |
158 | elf_flags |= E_FLAG_RX_ABI; | |
159 | return 1; | |
f0c00282 NC |
160 | |
161 | case OPTION_CPU: | |
162 | if (strcasecmp (arg, "rx100") == 0) | |
163 | rx_cpu = RX100; | |
164 | else if (strcasecmp (arg, "rx200") == 0) | |
165 | rx_cpu = RX200; | |
166 | else if (strcasecmp (arg, "rx600") == 0) | |
167 | rx_cpu = RX600; | |
168 | else if (strcasecmp (arg, "rx610") == 0) | |
169 | rx_cpu = RX610; | |
170 | else | |
171 | { | |
172 | as_warn (_("unrecognised RX CPU type %s"), arg); | |
173 | break; | |
174 | } | |
175 | return 1; | |
c7927a3c NC |
176 | } |
177 | return 0; | |
178 | } | |
179 | ||
180 | void | |
181 | md_show_usage (FILE * stream) | |
182 | { | |
183 | fprintf (stream, _(" RX specific command line options:\n")); | |
184 | fprintf (stream, _(" --mbig-endian-data\n")); | |
185 | fprintf (stream, _(" --mlittle-endian-data [default]\n")); | |
186 | fprintf (stream, _(" --m32bit-doubles [default]\n")); | |
187 | fprintf (stream, _(" --m64bit-doubles\n")); | |
188 | fprintf (stream, _(" --muse-conventional-section-names\n")); | |
189 | fprintf (stream, _(" --muse-renesas-section-names [default]\n")); | |
190 | fprintf (stream, _(" --msmall-data-limit\n")); | |
d4cb0ea0 NC |
191 | fprintf (stream, _(" --mrelax\n")); |
192 | fprintf (stream, _(" --mpid\n")); | |
193 | fprintf (stream, _(" --mint-register=<value>\n")); | |
f0c00282 | 194 | fprintf (stream, _(" --mcpu=<rx100|rx200|rx600|rx610>\n")); |
c7927a3c NC |
195 | } |
196 | ||
197 | static void | |
198 | s_bss (int ignore ATTRIBUTE_UNUSED) | |
199 | { | |
200 | int temp; | |
201 | ||
202 | temp = get_absolute_expression (); | |
203 | subseg_set (bss_section, (subsegT) temp); | |
204 | demand_empty_rest_of_line (); | |
205 | } | |
206 | ||
207 | static void | |
208 | rx_float_cons (int ignore ATTRIBUTE_UNUSED) | |
209 | { | |
210 | if (elf_flags & E_FLAG_RX_64BIT_DOUBLES) | |
211 | return float_cons ('d'); | |
212 | return float_cons ('f'); | |
213 | } | |
214 | ||
215 | static char * | |
216 | rx_strcasestr (const char *string, const char *sub) | |
217 | { | |
218 | int subl; | |
219 | int strl; | |
220 | ||
221 | if (!sub || !sub[0]) | |
222 | return (char *)string; | |
223 | ||
224 | subl = strlen (sub); | |
225 | strl = strlen (string); | |
226 | ||
227 | while (strl >= subl) | |
228 | { | |
229 | /* strncasecmp is in libiberty. */ | |
230 | if (strncasecmp (string, sub, subl) == 0) | |
231 | return (char *)string; | |
232 | ||
233 | string ++; | |
234 | strl --; | |
235 | } | |
236 | return NULL; | |
237 | } | |
238 | ||
239 | static void | |
240 | rx_include (int ignore) | |
241 | { | |
242 | FILE * try; | |
243 | char * path; | |
244 | char * filename; | |
245 | char * current_filename; | |
720fbed6 | 246 | char * last_char; |
c7927a3c NC |
247 | char * p; |
248 | char * d; | |
249 | char * f; | |
250 | char end_char; | |
251 | size_t len; | |
252 | ||
253 | /* The RX version of the .INCLUDE pseudo-op does not | |
254 | have to have the filename inside double quotes. */ | |
255 | SKIP_WHITESPACE (); | |
256 | if (*input_line_pointer == '"') | |
257 | { | |
258 | /* Treat as the normal GAS .include pseudo-op. */ | |
259 | s_include (ignore); | |
260 | return; | |
261 | } | |
262 | ||
263 | /* Get the filename. Spaces are allowed, NUL characters are not. */ | |
264 | filename = input_line_pointer; | |
720fbed6 NC |
265 | last_char = find_end_of_line (filename, FALSE); |
266 | input_line_pointer = last_char; | |
267 | ||
268 | while (last_char >= filename && (* last_char == ' ' || * last_char == '\n')) | |
269 | -- last_char; | |
270 | end_char = *(++ last_char); | |
271 | * last_char = 0; | |
272 | if (last_char == filename) | |
c7927a3c NC |
273 | { |
274 | as_bad (_("no filename following .INCLUDE pseudo-op")); | |
720fbed6 | 275 | * last_char = end_char; |
c7927a3c NC |
276 | return; |
277 | } | |
278 | ||
279 | as_where (& current_filename, NULL); | |
280 | f = (char *) xmalloc (strlen (current_filename) + strlen (filename) + 1); | |
281 | ||
282 | /* Check the filename. If [@]..FILE[@] is found then replace | |
283 | this with the current assembler source filename, stripped | |
284 | of any directory prefixes or extensions. */ | |
285 | if ((p = rx_strcasestr (filename, "..file")) != NULL) | |
286 | { | |
287 | char * c; | |
288 | ||
289 | len = 6; /* strlen ("..file"); */ | |
290 | ||
291 | if (p > filename && p[-1] == '@') | |
292 | -- p, ++len; | |
293 | ||
294 | if (p[len] == '@') | |
295 | len ++; | |
296 | ||
297 | for (d = c = current_filename; *c; c++) | |
298 | if (IS_DIR_SEPARATOR (* c)) | |
299 | d = c + 1; | |
300 | for (c = d; *c; c++) | |
301 | if (*c == '.') | |
302 | break; | |
303 | ||
304 | sprintf (f, "%.*s%.*s%.*s", (int) (p - filename), filename, | |
305 | (int) (c - d), d, | |
306 | (int) (strlen (filename) - ((p + len) - filename)), | |
307 | p + len); | |
308 | } | |
309 | else | |
310 | strcpy (f, filename); | |
311 | ||
312 | /* RX .INCLUDE semantics say that 'filename' is located by: | |
313 | ||
314 | 1. If filename is absolute, just try that. Otherwise... | |
315 | ||
316 | 2. If the current source file includes a directory component | |
317 | then prepend that to the filename and try. Otherwise... | |
318 | ||
319 | 3. Try any directories specified by the -I command line | |
320 | option(s). | |
321 | ||
322 | 4 .Try a directory specifed by the INC100 environment variable. */ | |
323 | ||
324 | if (IS_ABSOLUTE_PATH (f)) | |
325 | try = fopen (path = f, FOPEN_RT); | |
326 | else | |
327 | { | |
328 | char * env = getenv ("INC100"); | |
329 | ||
330 | try = NULL; | |
331 | ||
332 | len = strlen (current_filename); | |
333 | if ((size_t) include_dir_maxlen > len) | |
334 | len = include_dir_maxlen; | |
335 | if (env && strlen (env) > len) | |
336 | len = strlen (env); | |
337 | ||
338 | path = (char *) xmalloc (strlen (f) + len + 5); | |
339 | ||
340 | if (current_filename != NULL) | |
341 | { | |
342 | for (d = NULL, p = current_filename; *p; p++) | |
343 | if (IS_DIR_SEPARATOR (* p)) | |
344 | d = p; | |
345 | ||
346 | if (d != NULL) | |
347 | { | |
348 | sprintf (path, "%.*s/%s", (int) (d - current_filename), current_filename, | |
349 | f); | |
350 | try = fopen (path, FOPEN_RT); | |
351 | } | |
352 | } | |
353 | ||
354 | if (try == NULL) | |
355 | { | |
356 | int i; | |
357 | ||
358 | for (i = 0; i < include_dir_count; i++) | |
359 | { | |
360 | sprintf (path, "%s/%s", include_dirs[i], f); | |
361 | if ((try = fopen (path, FOPEN_RT)) != NULL) | |
362 | break; | |
363 | } | |
364 | } | |
365 | ||
366 | if (try == NULL && env != NULL) | |
367 | { | |
368 | sprintf (path, "%s/%s", env, f); | |
369 | try = fopen (path, FOPEN_RT); | |
370 | } | |
371 | ||
372 | free (f); | |
373 | } | |
374 | ||
375 | if (try == NULL) | |
376 | { | |
377 | as_bad (_("unable to locate include file: %s"), filename); | |
378 | free (path); | |
379 | } | |
380 | else | |
381 | { | |
382 | fclose (try); | |
383 | register_dependency (path); | |
384 | input_scrub_insert_file (path); | |
385 | } | |
386 | ||
720fbed6 | 387 | * last_char = end_char; |
c7927a3c NC |
388 | } |
389 | ||
390 | static void | |
391 | parse_rx_section (char * name) | |
392 | { | |
393 | asection * sec; | |
394 | int type; | |
395 | int attr = SHF_ALLOC | SHF_EXECINSTR; | |
396 | int align = 2; | |
397 | char end_char; | |
398 | ||
399 | do | |
400 | { | |
401 | char * p; | |
402 | ||
403 | SKIP_WHITESPACE (); | |
404 | for (p = input_line_pointer; *p && strchr ("\n\t, =", *p) == NULL; p++) | |
405 | ; | |
406 | end_char = *p; | |
407 | *p = 0; | |
408 | ||
409 | if (strcasecmp (input_line_pointer, "ALIGN") == 0) | |
410 | { | |
411 | *p = end_char; | |
412 | ||
413 | if (end_char == ' ') | |
414 | while (ISSPACE (*p)) | |
415 | p++; | |
416 | ||
417 | if (*p == '=') | |
418 | { | |
419 | ++ p; | |
420 | while (ISSPACE (*p)) | |
421 | p++; | |
422 | switch (*p) | |
423 | { | |
424 | case '2': align = 2; break; | |
425 | case '4': align = 4; break; | |
426 | case '8': align = 8; break; | |
427 | default: | |
428 | as_bad (_("unrecognised alignment value in .SECTION directive: %s"), p); | |
429 | ignore_rest_of_line (); | |
430 | return; | |
431 | } | |
432 | ++ p; | |
433 | } | |
434 | ||
435 | end_char = *p; | |
436 | } | |
437 | else if (strcasecmp (input_line_pointer, "CODE") == 0) | |
438 | attr = SHF_ALLOC | SHF_EXECINSTR; | |
439 | else if (strcasecmp (input_line_pointer, "DATA") == 0) | |
440 | attr = SHF_ALLOC | SHF_WRITE; | |
441 | else if (strcasecmp (input_line_pointer, "ROMDATA") == 0) | |
442 | attr = SHF_ALLOC; | |
443 | else | |
444 | { | |
445 | as_bad (_("unknown parameter following .SECTION directive: %s"), | |
446 | input_line_pointer); | |
447 | ||
448 | *p = end_char; | |
449 | input_line_pointer = p + 1; | |
450 | ignore_rest_of_line (); | |
451 | return; | |
452 | } | |
453 | ||
454 | *p = end_char; | |
455 | input_line_pointer = p + 1; | |
456 | } | |
457 | while (end_char != '\n' && end_char != 0); | |
458 | ||
459 | if ((sec = bfd_get_section_by_name (stdoutput, name)) == NULL) | |
460 | { | |
461 | if (strcmp (name, "B") && strcmp (name, "B_1") && strcmp (name, "B_2")) | |
462 | type = SHT_NULL; | |
463 | else | |
464 | type = SHT_NOBITS; | |
465 | ||
466 | obj_elf_change_section (name, type, attr, 0, NULL, FALSE, FALSE); | |
467 | } | |
468 | else /* Try not to redefine a section, especially B_1. */ | |
469 | { | |
470 | int flags = sec->flags; | |
471 | ||
472 | type = elf_section_type (sec); | |
473 | ||
474 | attr = ((flags & SEC_READONLY) ? 0 : SHF_WRITE) | |
475 | | ((flags & SEC_ALLOC) ? SHF_ALLOC : 0) | |
476 | | ((flags & SEC_CODE) ? SHF_EXECINSTR : 0) | |
477 | | ((flags & SEC_MERGE) ? SHF_MERGE : 0) | |
478 | | ((flags & SEC_STRINGS) ? SHF_STRINGS : 0) | |
479 | | ((flags & SEC_THREAD_LOCAL) ? SHF_TLS : 0); | |
480 | ||
481 | obj_elf_change_section (name, type, attr, 0, NULL, FALSE, FALSE); | |
482 | } | |
483 | ||
484 | bfd_set_section_alignment (stdoutput, now_seg, align); | |
485 | } | |
486 | ||
487 | static void | |
488 | rx_section (int ignore) | |
489 | { | |
490 | char * p; | |
491 | ||
492 | /* The as100 assembler supports a different syntax for the .section | |
493 | pseudo-op. So check for it and handle it here if necessary. */ | |
494 | SKIP_WHITESPACE (); | |
495 | ||
496 | /* Peek past the section name to see if arguments follow. */ | |
497 | for (p = input_line_pointer; *p; p++) | |
498 | if (*p == ',' || *p == '\n') | |
499 | break; | |
500 | ||
501 | if (*p == ',') | |
502 | { | |
503 | int len = p - input_line_pointer; | |
504 | ||
505 | while (ISSPACE (*++p)) | |
506 | ; | |
507 | ||
508 | if (*p != '"' && *p != '#') | |
509 | { | |
510 | char * name = (char *) xmalloc (len + 1); | |
511 | ||
512 | strncpy (name, input_line_pointer, len); | |
513 | name[len] = 0; | |
514 | ||
515 | input_line_pointer = p; | |
516 | parse_rx_section (name); | |
517 | return; | |
518 | } | |
519 | } | |
520 | ||
521 | obj_elf_section (ignore); | |
522 | } | |
523 | ||
524 | static void | |
525 | rx_list (int ignore ATTRIBUTE_UNUSED) | |
526 | { | |
527 | SKIP_WHITESPACE (); | |
528 | ||
529 | if (strncasecmp (input_line_pointer, "OFF", 3)) | |
530 | listing_list (0); | |
531 | else if (strncasecmp (input_line_pointer, "ON", 2)) | |
532 | listing_list (1); | |
533 | else | |
534 | as_warn (_("expecting either ON or OFF after .list")); | |
535 | } | |
536 | ||
537 | /* Like the .rept pseudo op, but supports the | |
538 | use of ..MACREP inside the repeated region. */ | |
539 | ||
540 | static void | |
541 | rx_rept (int ignore ATTRIBUTE_UNUSED) | |
542 | { | |
543 | int count = get_absolute_expression (); | |
544 | ||
545 | do_repeat_with_expander (count, "MREPEAT", "ENDR", "..MACREP"); | |
546 | } | |
547 | ||
548 | /* Like cons() accept that strings are allowed. */ | |
549 | ||
550 | static void | |
551 | rx_cons (int size) | |
552 | { | |
553 | SKIP_WHITESPACE (); | |
554 | ||
555 | if (* input_line_pointer == '"') | |
556 | stringer (8+0); | |
557 | else | |
558 | cons (size); | |
559 | } | |
560 | ||
561 | static void | |
562 | rx_nop (int ignore ATTRIBUTE_UNUSED) | |
563 | { | |
564 | ignore_rest_of_line (); | |
565 | } | |
566 | ||
567 | static void | |
568 | rx_unimp (int idx) | |
569 | { | |
570 | as_warn (_("The \".%s\" pseudo-op is not implemented\n"), | |
571 | md_pseudo_table[idx].poc_name); | |
572 | ignore_rest_of_line (); | |
573 | } | |
574 | ||
575 | /* The target specific pseudo-ops which we support. */ | |
576 | const pseudo_typeS md_pseudo_table[] = | |
577 | { | |
578 | /* These are unimplemented. They're listed first so that we can use | |
579 | the poc_value as the index into this array, to get the name of | |
580 | the pseudo. So, keep these (1) first, and (2) in order, with (3) | |
581 | the poc_value's in sequence. */ | |
582 | { "btglb", rx_unimp, 0 }, | |
583 | { "call", rx_unimp, 1 }, | |
584 | { "einsf", rx_unimp, 2 }, | |
585 | { "fb", rx_unimp, 3 }, | |
586 | { "fbsym", rx_unimp, 4 }, | |
587 | { "id", rx_unimp, 5 }, | |
588 | { "initsct", rx_unimp, 6 }, | |
589 | { "insf", rx_unimp, 7 }, | |
590 | { "instr", rx_unimp, 8 }, | |
591 | { "lbba", rx_unimp, 9 }, | |
592 | { "len", rx_unimp, 10 }, | |
593 | { "optj", rx_unimp, 11 }, | |
594 | { "rvector", rx_unimp, 12 }, | |
595 | { "sb", rx_unimp, 13 }, | |
596 | { "sbbit", rx_unimp, 14 }, | |
597 | { "sbsym", rx_unimp, 15 }, | |
598 | { "sbsym16", rx_unimp, 16 }, | |
599 | ||
600 | /* These are the do-nothing pseudos. */ | |
601 | { "stk", rx_nop, 0 }, | |
602 | /* The manual documents ".stk" but the compiler emits ".stack". */ | |
603 | { "stack", rx_nop, 0 }, | |
604 | ||
a22429b9 | 605 | /* These are Renesas as100 assembler pseudo-ops that we do support. */ |
c7927a3c NC |
606 | { "addr", rx_cons, 3 }, |
607 | { "align", s_align_bytes, 2 }, | |
608 | { "byte", rx_cons, 1 }, | |
609 | { "fixed", float_cons, 'f' }, | |
610 | { "form", listing_psize, 0 }, | |
611 | { "glb", s_globl, 0 }, | |
612 | { "include", rx_include, 0 }, | |
613 | { "list", rx_list, 0 }, | |
614 | { "lword", rx_cons, 4 }, | |
615 | { "mrepeat", rx_rept, 0 }, | |
616 | { "section", rx_section, 0 }, | |
617 | ||
618 | /* FIXME: The following pseudo-ops place their values (and associated | |
619 | label if present) in the data section, regardless of whatever | |
620 | section we are currently in. At the moment this code does not | |
621 | implement that part of the semantics. */ | |
622 | { "blka", s_space, 3 }, | |
623 | { "blkb", s_space, 1 }, | |
624 | { "blkd", s_space, 8 }, | |
625 | { "blkf", s_space, 4 }, | |
626 | { "blkl", s_space, 4 }, | |
627 | { "blkw", s_space, 2 }, | |
628 | ||
629 | /* Our "standard" pseudos. */ | |
630 | { "double", rx_float_cons, 0 }, | |
631 | { "bss", s_bss, 0 }, | |
632 | { "3byte", cons, 3 }, | |
633 | { "int", cons, 4 }, | |
634 | { "word", cons, 4 }, | |
635 | ||
0e25bcb4 DD |
636 | { "fetchalign", rx_fetchalign, 0 }, |
637 | ||
c7927a3c NC |
638 | /* End of list marker. */ |
639 | { NULL, NULL, 0 } | |
640 | }; | |
641 | ||
642 | static asymbol * gp_symbol; | |
d4cb0ea0 NC |
643 | static asymbol * rx_pid_symbol; |
644 | ||
645 | static symbolS * rx_pidreg_symbol; | |
646 | static symbolS * rx_gpreg_symbol; | |
c7927a3c NC |
647 | |
648 | void | |
649 | md_begin (void) | |
650 | { | |
d4cb0ea0 NC |
651 | /* Make the __gp and __pid_base symbols now rather |
652 | than after the symbol table is frozen. We only do this | |
653 | when supporting small data limits because otherwise we | |
654 | pollute the symbol table. */ | |
655 | ||
656 | /* The meta-registers %pidreg and %gpreg depend on what other | |
657 | options are specified. The __rx_*_defined symbols exist so we | |
658 | can .ifdef asm code based on what options were passed to gas, | |
659 | without needing a preprocessor */ | |
660 | ||
661 | if (rx_pid_mode) | |
662 | { | |
663 | rx_pid_register = 13 - rx_num_int_regs; | |
664 | rx_pid_symbol = symbol_get_bfdsym (symbol_find_or_make ("__pid_base")); | |
665 | rx_pidreg_symbol = symbol_find_or_make ("__rx_pidreg_defined"); | |
666 | S_SET_VALUE (rx_pidreg_symbol, rx_pid_register); | |
667 | S_SET_SEGMENT (rx_pidreg_symbol, absolute_section); | |
668 | } | |
669 | ||
c7927a3c | 670 | if (rx_use_small_data_limit) |
d4cb0ea0 NC |
671 | { |
672 | if (rx_pid_mode) | |
673 | rx_gp_register = rx_pid_register - 1; | |
674 | else | |
675 | rx_gp_register = 13 - rx_num_int_regs; | |
676 | gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp")); | |
677 | rx_gpreg_symbol = symbol_find_or_make ("__rx_gpreg_defined"); | |
678 | S_SET_VALUE (rx_gpreg_symbol, rx_gp_register); | |
679 | S_SET_SEGMENT (rx_gpreg_symbol, absolute_section); | |
680 | } | |
c7927a3c NC |
681 | } |
682 | ||
683 | char * rx_lex_start; | |
684 | char * rx_lex_end; | |
685 | ||
0e25bcb4 DD |
686 | /* These negative numbers are found in rx_bytesT.n_base for non-opcode |
687 | md_frags */ | |
688 | #define RX_NBASE_FETCHALIGN -1 | |
689 | ||
c7927a3c NC |
690 | typedef struct rx_bytesT |
691 | { | |
692 | char base[4]; | |
0e25bcb4 | 693 | /* If this is negative, it's a special-purpose frag as per the defines above. */ |
c7927a3c NC |
694 | int n_base; |
695 | char ops[8]; | |
696 | int n_ops; | |
697 | struct | |
698 | { | |
699 | expressionS exp; | |
700 | char offset; | |
701 | char nbits; | |
702 | char type; /* RXREL_*. */ | |
703 | int reloc; | |
704 | fixS * fixP; | |
705 | } fixups[2]; | |
706 | int n_fixups; | |
707 | struct | |
708 | { | |
709 | char type; | |
710 | char field_pos; | |
711 | char val_ofs; | |
712 | } relax[2]; | |
713 | int n_relax; | |
714 | int link_relax; | |
715 | fixS *link_relax_fixP; | |
44a808b1 DD |
716 | char times_grown; |
717 | char times_shrank; | |
c7927a3c NC |
718 | } rx_bytesT; |
719 | ||
720 | static rx_bytesT rx_bytes; | |
0e25bcb4 DD |
721 | /* We set n_ops to be "size of next opcode" if the next opcode doesn't relax. */ |
722 | static rx_bytesT *fetchalign_bytes = NULL; | |
723 | ||
724 | static void | |
725 | rx_fetchalign (int ignore ATTRIBUTE_UNUSED) | |
726 | { | |
727 | char * bytes; | |
728 | fragS * frag_then; | |
729 | ||
730 | memset (& rx_bytes, 0, sizeof (rx_bytes)); | |
731 | rx_bytes.n_base = RX_NBASE_FETCHALIGN; | |
732 | ||
733 | bytes = frag_more (8); | |
734 | frag_then = frag_now; | |
735 | frag_variant (rs_machine_dependent, | |
736 | 0 /* max_chars */, | |
737 | 0 /* var */, | |
738 | 0 /* subtype */, | |
739 | 0 /* symbol */, | |
740 | 0 /* offset */, | |
741 | 0 /* opcode */); | |
742 | frag_then->fr_opcode = bytes; | |
743 | frag_then->fr_subtype = 0; | |
744 | fetchalign_bytes = frag_then->tc_frag_data; | |
745 | } | |
c7927a3c NC |
746 | |
747 | void | |
748 | rx_relax (int type, int pos) | |
749 | { | |
750 | rx_bytes.relax[rx_bytes.n_relax].type = type; | |
751 | rx_bytes.relax[rx_bytes.n_relax].field_pos = pos; | |
752 | rx_bytes.relax[rx_bytes.n_relax].val_ofs = rx_bytes.n_base + rx_bytes.n_ops; | |
753 | rx_bytes.n_relax ++; | |
754 | } | |
755 | ||
756 | void | |
757 | rx_linkrelax_dsp (int pos) | |
758 | { | |
759 | switch (pos) | |
760 | { | |
761 | case 4: | |
762 | rx_bytes.link_relax |= RX_RELAXA_DSP4; | |
763 | break; | |
764 | case 6: | |
765 | rx_bytes.link_relax |= RX_RELAXA_DSP6; | |
766 | break; | |
767 | case 14: | |
768 | rx_bytes.link_relax |= RX_RELAXA_DSP14; | |
769 | break; | |
770 | } | |
771 | } | |
772 | ||
773 | void | |
774 | rx_linkrelax_imm (int pos) | |
775 | { | |
776 | switch (pos) | |
777 | { | |
778 | case 6: | |
779 | rx_bytes.link_relax |= RX_RELAXA_IMM6; | |
780 | break; | |
781 | case 12: | |
782 | rx_bytes.link_relax |= RX_RELAXA_IMM12; | |
783 | break; | |
784 | } | |
785 | } | |
786 | ||
787 | void | |
788 | rx_linkrelax_branch (void) | |
789 | { | |
790 | rx_bytes.link_relax |= RX_RELAXA_BRA; | |
791 | } | |
792 | ||
793 | static void | |
794 | rx_fixup (expressionS exp, int offsetbits, int nbits, int type) | |
795 | { | |
796 | rx_bytes.fixups[rx_bytes.n_fixups].exp = exp; | |
797 | rx_bytes.fixups[rx_bytes.n_fixups].offset = offsetbits; | |
798 | rx_bytes.fixups[rx_bytes.n_fixups].nbits = nbits; | |
799 | rx_bytes.fixups[rx_bytes.n_fixups].type = type; | |
800 | rx_bytes.fixups[rx_bytes.n_fixups].reloc = exp.X_md; | |
801 | rx_bytes.n_fixups ++; | |
802 | } | |
803 | ||
804 | #define rx_field_fixup(exp, offset, nbits, type) \ | |
805 | rx_fixup (exp, offset, nbits, type) | |
806 | ||
807 | #define rx_op_fixup(exp, offset, nbits, type) \ | |
808 | rx_fixup (exp, offset + 8 * rx_bytes.n_base, nbits, type) | |
809 | ||
810 | void | |
811 | rx_base1 (int b1) | |
812 | { | |
813 | rx_bytes.base[0] = b1; | |
814 | rx_bytes.n_base = 1; | |
815 | } | |
816 | ||
817 | void | |
818 | rx_base2 (int b1, int b2) | |
819 | { | |
820 | rx_bytes.base[0] = b1; | |
821 | rx_bytes.base[1] = b2; | |
822 | rx_bytes.n_base = 2; | |
823 | } | |
824 | ||
825 | void | |
826 | rx_base3 (int b1, int b2, int b3) | |
827 | { | |
828 | rx_bytes.base[0] = b1; | |
829 | rx_bytes.base[1] = b2; | |
830 | rx_bytes.base[2] = b3; | |
831 | rx_bytes.n_base = 3; | |
832 | } | |
833 | ||
834 | void | |
835 | rx_base4 (int b1, int b2, int b3, int b4) | |
836 | { | |
837 | rx_bytes.base[0] = b1; | |
838 | rx_bytes.base[1] = b2; | |
839 | rx_bytes.base[2] = b3; | |
840 | rx_bytes.base[3] = b4; | |
841 | rx_bytes.n_base = 4; | |
842 | } | |
843 | ||
844 | /* This gets complicated when the field spans bytes, because fields | |
845 | are numbered from the MSB of the first byte as zero, and bits are | |
846 | stored LSB towards the LSB of the byte. Thus, a simple four-bit | |
847 | insertion of 12 at position 4 of 0x00 yields: 0x0b. A three-bit | |
848 | insertion of b'MXL at position 7 is like this: | |
849 | ||
850 | - - - - - - - - - - - - - - - - | |
851 | M X L */ | |
852 | ||
853 | void | |
854 | rx_field (int val, int pos, int sz) | |
855 | { | |
856 | int valm; | |
857 | int bytep, bitp; | |
858 | ||
859 | if (sz > 0) | |
860 | { | |
861 | if (val < 0 || val >= (1 << sz)) | |
862 | as_bad (_("Value %d doesn't fit in unsigned %d-bit field"), val, sz); | |
863 | } | |
864 | else | |
865 | { | |
866 | sz = - sz; | |
867 | if (val < -(1 << (sz - 1)) || val >= (1 << (sz - 1))) | |
868 | as_bad (_("Value %d doesn't fit in signed %d-bit field"), val, sz); | |
869 | } | |
870 | ||
871 | /* This code points at 'M' in the above example. */ | |
872 | bytep = pos / 8; | |
873 | bitp = pos % 8; | |
874 | ||
875 | while (bitp + sz > 8) | |
876 | { | |
877 | int ssz = 8 - bitp; | |
878 | int svalm; | |
879 | ||
880 | svalm = val >> (sz - ssz); | |
881 | svalm = svalm & ((1 << ssz) - 1); | |
882 | svalm = svalm << (8 - bitp - ssz); | |
883 | gas_assert (bytep < rx_bytes.n_base); | |
884 | rx_bytes.base[bytep] |= svalm; | |
885 | ||
886 | bitp = 0; | |
887 | sz -= ssz; | |
888 | bytep ++; | |
889 | } | |
890 | valm = val & ((1 << sz) - 1); | |
891 | valm = valm << (8 - bitp - sz); | |
892 | gas_assert (bytep < rx_bytes.n_base); | |
893 | rx_bytes.base[bytep] |= valm; | |
894 | } | |
895 | ||
896 | /* Special case of the above, for 3-bit displacements of 2..9. */ | |
897 | ||
898 | void | |
899 | rx_disp3 (expressionS exp, int pos) | |
900 | { | |
901 | rx_field_fixup (exp, pos, 3, RXREL_PCREL); | |
902 | } | |
903 | ||
904 | /* Special case of the above, for split 5-bit displacements. Assumes | |
905 | the displacement has been checked with rx_disp5op. */ | |
906 | /* ---- -432 1--- 0--- */ | |
907 | ||
908 | void | |
909 | rx_field5s (expressionS exp) | |
910 | { | |
911 | int val; | |
912 | ||
913 | val = exp.X_add_number; | |
914 | rx_bytes.base[0] |= val >> 2; | |
915 | rx_bytes.base[1] |= (val << 6) & 0x80; | |
916 | rx_bytes.base[1] |= (val << 3) & 0x08; | |
917 | } | |
918 | ||
919 | /* ---- ---- 4--- 3210 */ | |
920 | ||
921 | void | |
922 | rx_field5s2 (expressionS exp) | |
923 | { | |
924 | int val; | |
925 | ||
926 | val = exp.X_add_number; | |
927 | rx_bytes.base[1] |= (val << 3) & 0x80; | |
928 | rx_bytes.base[1] |= (val ) & 0x0f; | |
929 | } | |
930 | ||
931 | #define OP(x) rx_bytes.ops[rx_bytes.n_ops++] = (x) | |
932 | ||
933 | #define F_PRECISION 2 | |
934 | ||
935 | void | |
936 | rx_op (expressionS exp, int nbytes, int type) | |
937 | { | |
938 | int v = 0; | |
939 | ||
940 | if ((exp.X_op == O_constant || exp.X_op == O_big) | |
941 | && type != RXREL_PCREL) | |
942 | { | |
943 | if (exp.X_op == O_big && exp.X_add_number <= 0) | |
944 | { | |
945 | LITTLENUM_TYPE w[2]; | |
946 | char * ip = rx_bytes.ops + rx_bytes.n_ops; | |
947 | ||
948 | gen_to_words (w, F_PRECISION, 8); | |
949 | #if RX_OPCODE_BIG_ENDIAN | |
950 | ip[0] = w[0] >> 8; | |
951 | ip[1] = w[0]; | |
952 | ip[2] = w[1] >> 8; | |
953 | ip[3] = w[1]; | |
954 | #else | |
955 | ip[3] = w[0] >> 8; | |
956 | ip[2] = w[0]; | |
957 | ip[1] = w[1] >> 8; | |
958 | ip[0] = w[1]; | |
959 | #endif | |
960 | rx_bytes.n_ops += 4; | |
961 | } | |
962 | else | |
963 | { | |
964 | v = exp.X_add_number; | |
965 | while (nbytes) | |
966 | { | |
967 | #if RX_OPCODE_BIG_ENDIAN | |
968 | OP ((v >> (8 * (nbytes - 1))) & 0xff); | |
969 | #else | |
970 | OP (v & 0xff); | |
971 | v >>= 8; | |
972 | #endif | |
973 | nbytes --; | |
974 | } | |
975 | } | |
976 | } | |
977 | else | |
978 | { | |
979 | rx_op_fixup (exp, rx_bytes.n_ops * 8, nbytes * 8, type); | |
980 | memset (rx_bytes.ops + rx_bytes.n_ops, 0, nbytes); | |
981 | rx_bytes.n_ops += nbytes; | |
982 | } | |
983 | } | |
984 | ||
985 | int | |
986 | rx_wrap (void) | |
987 | { | |
988 | return 0; | |
989 | } | |
990 | ||
991 | #define APPEND(B, N_B) \ | |
992 | if (rx_bytes.N_B) \ | |
993 | { \ | |
994 | memcpy (bytes + idx, rx_bytes.B, rx_bytes.N_B); \ | |
995 | idx += rx_bytes.N_B; \ | |
996 | } | |
997 | ||
998 | void | |
999 | rx_frag_init (fragS * fragP) | |
1000 | { | |
0e25bcb4 | 1001 | if (rx_bytes.n_relax || rx_bytes.link_relax || rx_bytes.n_base < 0) |
c7927a3c NC |
1002 | { |
1003 | fragP->tc_frag_data = malloc (sizeof (rx_bytesT)); | |
1004 | memcpy (fragP->tc_frag_data, & rx_bytes, sizeof (rx_bytesT)); | |
1005 | } | |
1006 | else | |
1007 | fragP->tc_frag_data = 0; | |
1008 | } | |
1009 | ||
1010 | /* Handle the as100's version of the .equ pseudo-op. It has the syntax: | |
1011 | <symbol_name> .equ <expression> */ | |
1012 | ||
1013 | static void | |
34ab8888 | 1014 | rx_equ (char * name, char * expression) |
c7927a3c NC |
1015 | { |
1016 | char saved_name_end_char; | |
1017 | char * name_end; | |
1018 | char * saved_ilp; | |
1019 | ||
1020 | while (ISSPACE (* name)) | |
1021 | name ++; | |
1022 | ||
1023 | for (name_end = name + 1; *name_end; name_end ++) | |
1024 | if (! ISALNUM (* name_end)) | |
1025 | break; | |
1026 | ||
1027 | saved_name_end_char = * name_end; | |
1028 | * name_end = 0; | |
1029 | ||
1030 | saved_ilp = input_line_pointer; | |
34ab8888 | 1031 | input_line_pointer = expression; |
c7927a3c NC |
1032 | |
1033 | equals (name, 1); | |
1034 | ||
1035 | input_line_pointer = saved_ilp; | |
1036 | * name_end = saved_name_end_char; | |
1037 | } | |
1038 | ||
1039 | /* Look for Renesas as100 pseudo-ops that occur after a symbol name | |
1040 | rather than at the start of a line. (eg .EQU or .DEFINE). If one | |
1041 | is found, process it and return TRUE otherwise return FALSE. */ | |
1042 | ||
1043 | static bfd_boolean | |
1044 | scan_for_infix_rx_pseudo_ops (char * str) | |
1045 | { | |
1046 | char * p; | |
1047 | char * pseudo_op; | |
1048 | char * dot = strchr (str, '.'); | |
1049 | ||
1050 | if (dot == NULL || dot == str) | |
1051 | return FALSE; | |
1052 | ||
1053 | /* A real pseudo-op must be preceeded by whitespace. */ | |
1054 | if (dot[-1] != ' ' && dot[-1] != '\t') | |
1055 | return FALSE; | |
1056 | ||
1057 | pseudo_op = dot + 1; | |
1058 | ||
1059 | if (!ISALNUM (* pseudo_op)) | |
1060 | return FALSE; | |
1061 | ||
1062 | for (p = pseudo_op + 1; ISALNUM (* p); p++) | |
1063 | ; | |
1064 | ||
1065 | if (strncasecmp ("EQU", pseudo_op, p - pseudo_op) == 0) | |
1066 | rx_equ (str, p); | |
1067 | else if (strncasecmp ("DEFINE", pseudo_op, p - pseudo_op) == 0) | |
1068 | as_warn (_("The .DEFINE pseudo-op is not implemented")); | |
1069 | else if (strncasecmp ("MACRO", pseudo_op, p - pseudo_op) == 0) | |
1070 | as_warn (_("The .MACRO pseudo-op is not implemented")); | |
1071 | else if (strncasecmp ("BTEQU", pseudo_op, p - pseudo_op) == 0) | |
1072 | as_warn (_("The .BTEQU pseudo-op is not implemented.")); | |
1073 | else | |
1074 | return FALSE; | |
1075 | ||
1076 | return TRUE; | |
1077 | } | |
1078 | ||
1079 | void | |
1080 | md_assemble (char * str) | |
1081 | { | |
1082 | char * bytes; | |
1083 | int idx = 0; | |
1084 | int i, rel; | |
1085 | fragS * frag_then = frag_now; | |
1086 | expressionS *exp; | |
1087 | ||
1088 | memset (& rx_bytes, 0, sizeof (rx_bytes)); | |
1089 | ||
1090 | rx_lex_init (str, str + strlen (str)); | |
1091 | if (scan_for_infix_rx_pseudo_ops (str)) | |
1092 | return; | |
1093 | rx_parse (); | |
1094 | ||
1095 | /* This simplifies the relaxation code. */ | |
1096 | if (rx_bytes.n_relax || rx_bytes.link_relax) | |
1097 | { | |
1098 | /* We do it this way because we want the frag to have the | |
1099 | rx_bytes in it, which we initialize above. */ | |
1100 | bytes = frag_more (12); | |
1101 | frag_then = frag_now; | |
1102 | frag_variant (rs_machine_dependent, | |
1103 | 0 /* max_chars */, | |
1104 | 0 /* var */, | |
1105 | 0 /* subtype */, | |
1106 | 0 /* symbol */, | |
1107 | 0 /* offset */, | |
1108 | 0 /* opcode */); | |
1109 | frag_then->fr_opcode = bytes; | |
1110 | frag_then->fr_fix += rx_bytes.n_base + rx_bytes.n_ops; | |
1111 | frag_then->fr_subtype = rx_bytes.n_base + rx_bytes.n_ops; | |
1112 | } | |
1113 | else | |
1114 | { | |
1115 | bytes = frag_more (rx_bytes.n_base + rx_bytes.n_ops); | |
1116 | frag_then = frag_now; | |
0e25bcb4 DD |
1117 | if (fetchalign_bytes) |
1118 | fetchalign_bytes->n_ops = rx_bytes.n_base + rx_bytes.n_ops; | |
c7927a3c NC |
1119 | } |
1120 | ||
0e25bcb4 DD |
1121 | fetchalign_bytes = NULL; |
1122 | ||
c7927a3c NC |
1123 | APPEND (base, n_base); |
1124 | APPEND (ops, n_ops); | |
1125 | ||
1126 | if (rx_bytes.link_relax && rx_bytes.n_fixups) | |
1127 | { | |
1128 | fixS * f; | |
1129 | ||
1130 | f = fix_new (frag_then, | |
1131 | (char *) bytes - frag_then->fr_literal, | |
1132 | 0, | |
1133 | abs_section_sym, | |
1134 | rx_bytes.link_relax | rx_bytes.n_fixups, | |
1135 | 0, | |
1136 | BFD_RELOC_RX_RELAX); | |
1137 | frag_then->tc_frag_data->link_relax_fixP = f; | |
1138 | } | |
1139 | ||
1140 | for (i = 0; i < rx_bytes.n_fixups; i ++) | |
1141 | { | |
1142 | /* index: [nbytes][type] */ | |
1143 | static int reloc_map[5][4] = | |
1144 | { | |
1145 | { 0, 0, 0, BFD_RELOC_RX_DIR3U_PCREL }, | |
1146 | { BFD_RELOC_8, BFD_RELOC_RX_8U, BFD_RELOC_RX_NEG8, BFD_RELOC_8_PCREL }, | |
1147 | { BFD_RELOC_RX_16_OP, BFD_RELOC_RX_16U, BFD_RELOC_RX_NEG16, BFD_RELOC_16_PCREL }, | |
1148 | { BFD_RELOC_RX_24_OP, BFD_RELOC_RX_24U, BFD_RELOC_RX_NEG24, BFD_RELOC_24_PCREL }, | |
1149 | { BFD_RELOC_RX_32_OP, BFD_RELOC_32, BFD_RELOC_RX_NEG32, BFD_RELOC_32_PCREL }, | |
1150 | }; | |
1151 | fixS * f; | |
1152 | ||
1153 | idx = rx_bytes.fixups[i].offset / 8; | |
1154 | rel = reloc_map [rx_bytes.fixups[i].nbits / 8][(int) rx_bytes.fixups[i].type]; | |
1155 | ||
1156 | if (rx_bytes.fixups[i].reloc) | |
1157 | rel = rx_bytes.fixups[i].reloc; | |
1158 | ||
1159 | if (frag_then->tc_frag_data) | |
1160 | exp = & frag_then->tc_frag_data->fixups[i].exp; | |
1161 | else | |
1162 | exp = & rx_bytes.fixups[i].exp; | |
1163 | ||
1164 | f = fix_new_exp (frag_then, | |
1165 | (char *) bytes + idx - frag_then->fr_literal, | |
1166 | rx_bytes.fixups[i].nbits / 8, | |
1167 | exp, | |
1168 | rx_bytes.fixups[i].type == RXREL_PCREL ? 1 : 0, | |
1169 | rel); | |
1170 | if (frag_then->tc_frag_data) | |
1171 | frag_then->tc_frag_data->fixups[i].fixP = f; | |
1172 | } | |
1173 | ||
1174 | dwarf2_emit_insn (idx); | |
1175 | } | |
1176 | ||
1177 | void | |
1178 | rx_md_end (void) | |
1179 | { | |
1180 | } | |
1181 | ||
1182 | /* Write a value out to the object file, using the appropriate endianness. */ | |
1183 | ||
1184 | void | |
1185 | md_number_to_chars (char * buf, valueT val, int n) | |
1186 | { | |
1187 | if (target_big_endian) | |
1188 | number_to_chars_bigendian (buf, val, n); | |
1189 | else | |
1190 | number_to_chars_littleendian (buf, val, n); | |
1191 | } | |
1192 | ||
1193 | static struct | |
1194 | { | |
1195 | char * fname; | |
1196 | int reloc; | |
1197 | } | |
1198 | reloc_functions[] = | |
1199 | { | |
1200 | { "gp", BFD_RELOC_GPREL16 }, | |
1201 | { 0, 0 } | |
1202 | }; | |
1203 | ||
1204 | void | |
1205 | md_operand (expressionS * exp ATTRIBUTE_UNUSED) | |
1206 | { | |
1207 | int reloc = 0; | |
1208 | int i; | |
1209 | ||
1210 | for (i = 0; reloc_functions[i].fname; i++) | |
1211 | { | |
1212 | int flen = strlen (reloc_functions[i].fname); | |
1213 | ||
1214 | if (input_line_pointer[0] == '%' | |
1215 | && strncasecmp (input_line_pointer + 1, reloc_functions[i].fname, flen) == 0 | |
1216 | && input_line_pointer[flen + 1] == '(') | |
1217 | { | |
1218 | reloc = reloc_functions[i].reloc; | |
1219 | input_line_pointer += flen + 2; | |
1220 | break; | |
1221 | } | |
1222 | } | |
1223 | if (reloc == 0) | |
1224 | return; | |
1225 | ||
1226 | expression (exp); | |
1227 | if (* input_line_pointer == ')') | |
1228 | input_line_pointer ++; | |
1229 | ||
1230 | exp->X_md = reloc; | |
1231 | } | |
1232 | ||
1233 | valueT | |
1234 | md_section_align (segT segment, valueT size) | |
1235 | { | |
1236 | int align = bfd_get_section_alignment (stdoutput, segment); | |
1237 | return ((size + (1 << align) - 1) & (-1 << align)); | |
1238 | } | |
1239 | ||
731df70d DD |
1240 | /* NOP - 1 cycle */ |
1241 | static unsigned char nop_1[] = { 0x03}; | |
1242 | /* MOV.L R0,R0 - 1 cycle */ | |
1243 | static unsigned char nop_2[] = { 0xef, 0x00}; | |
1244 | /* MAX R0,R0 - 1 cycle */ | |
1245 | static unsigned char nop_3[] = { 0xfc, 0x13, 0x00 }; | |
1246 | /* MUL #1,R0 - 1 cycle */ | |
1247 | static unsigned char nop_4[] = { 0x76, 0x10, 0x01, 0x00 }; | |
1248 | /* MUL #1,R0 - 1 cycle */ | |
1249 | static unsigned char nop_5[] = { 0x77, 0x10, 0x01, 0x00, 0x00 }; | |
1250 | /* MUL #1,R0 - 1 cycle */ | |
1251 | static unsigned char nop_6[] = { 0x74, 0x10, 0x01, 0x00, 0x00, 0x00 }; | |
1252 | /* BRA.S .+7 - 1 cycle */ | |
1253 | static unsigned char nop_7[] = { 0x0F, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03 }; | |
1254 | ||
1255 | static unsigned char *nops[] = { NULL, nop_1, nop_2, nop_3, nop_4, nop_5, nop_6, nop_7 }; | |
1256 | #define BIGGEST_NOP 7 | |
1257 | ||
c7927a3c NC |
1258 | /* When relaxing, we need to output a reloc for any .align directive |
1259 | so that we can retain this alignment as we adjust opcode sizes. */ | |
1260 | void | |
1261 | rx_handle_align (fragS * frag) | |
1262 | { | |
a22429b9 NC |
1263 | /* If handling an alignment frag, use an optimal NOP pattern. |
1264 | Only do this if a fill value has not already been provided. | |
1265 | FIXME: This test fails if the provided fill value is zero. */ | |
731df70d DD |
1266 | if ((frag->fr_type == rs_align |
1267 | || frag->fr_type == rs_align_code) | |
1268 | && subseg_text_p (now_seg)) | |
1269 | { | |
1270 | int count = (frag->fr_next->fr_address | |
d4cb0ea0 | 1271 | - frag->fr_address |
731df70d DD |
1272 | - frag->fr_fix); |
1273 | unsigned char *base = (unsigned char *)frag->fr_literal + frag->fr_fix; | |
1274 | ||
a22429b9 | 1275 | if (* base == 0) |
731df70d | 1276 | { |
a22429b9 NC |
1277 | if (count > BIGGEST_NOP) |
1278 | { | |
1279 | base[0] = 0x2e; | |
1280 | base[1] = count; | |
1281 | frag->fr_var = 2; | |
1282 | } | |
1283 | else if (count > 0) | |
1284 | { | |
1285 | memcpy (base, nops[count], count); | |
1286 | frag->fr_var = count; | |
1287 | } | |
731df70d DD |
1288 | } |
1289 | } | |
1290 | ||
c7927a3c NC |
1291 | if (linkrelax |
1292 | && (frag->fr_type == rs_align | |
1293 | || frag->fr_type == rs_align_code) | |
1294 | && frag->fr_address + frag->fr_fix > 0 | |
1295 | && frag->fr_offset > 0 | |
1296 | && now_seg != bss_section) | |
1297 | { | |
1298 | fix_new (frag, frag->fr_fix, 0, | |
1299 | &abs_symbol, RX_RELAXA_ALIGN + frag->fr_offset, | |
1300 | 0, BFD_RELOC_RX_RELAX); | |
1301 | /* For the purposes of relaxation, this relocation is attached | |
1302 | to the byte *after* the alignment - i.e. the byte that must | |
1303 | remain aligned. */ | |
1304 | fix_new (frag->fr_next, 0, 0, | |
1305 | &abs_symbol, RX_RELAXA_ELIGN + frag->fr_offset, | |
1306 | 0, BFD_RELOC_RX_RELAX); | |
1307 | } | |
1308 | } | |
1309 | ||
1310 | char * | |
1311 | md_atof (int type, char * litP, int * sizeP) | |
1312 | { | |
1313 | return ieee_md_atof (type, litP, sizeP, target_big_endian); | |
1314 | } | |
1315 | ||
1316 | symbolS * | |
1317 | md_undefined_symbol (char * name ATTRIBUTE_UNUSED) | |
1318 | { | |
1319 | return NULL; | |
1320 | } | |
1321 | ||
1322 | /*----------------------------------------------------------------------*/ | |
1323 | /* To recap: we estimate everything based on md_estimate_size, then | |
1324 | adjust based on rx_relax_frag. When it all settles, we call | |
1325 | md_convert frag to update the bytes. The relaxation types and | |
1326 | relocations are in fragP->tc_frag_data, which is a copy of that | |
1327 | rx_bytes. | |
1328 | ||
1329 | Our scheme is as follows: fr_fix has the size of the smallest | |
1330 | opcode (like BRA.S). We store the number of total bytes we need in | |
1331 | fr_subtype. When we're done relaxing, we use fr_subtype and the | |
1332 | existing opcode bytes to figure out what actual opcode we need to | |
1333 | put in there. If the fixup isn't resolvable now, we use the | |
1334 | maximal size. */ | |
1335 | ||
1336 | #define TRACE_RELAX 0 | |
1337 | #define tprintf if (TRACE_RELAX) printf | |
1338 | ||
1339 | typedef enum | |
1340 | { | |
1341 | OT_other, | |
1342 | OT_bra, | |
1343 | OT_beq, | |
1344 | OT_bne, | |
1345 | OT_bsr, | |
1346 | OT_bcc | |
1347 | } op_type_T; | |
1348 | ||
1349 | /* We're looking for these types of relaxations: | |
1350 | ||
1351 | BRA.S 00001dsp | |
1352 | BRA.B 00101110 dspppppp | |
1353 | BRA.W 00111000 dspppppp pppppppp | |
1354 | BRA.A 00000100 dspppppp pppppppp pppppppp | |
1355 | ||
1356 | BEQ.S 00010dsp | |
1357 | BEQ.B 00100000 dspppppp | |
1358 | BEQ.W 00111010 dspppppp pppppppp | |
1359 | ||
1360 | BNE.S 00011dsp | |
1361 | BNE.B 00100001 dspppppp | |
1362 | BNE.W 00111011 dspppppp pppppppp | |
1363 | ||
1364 | BSR.W 00111001 dspppppp pppppppp | |
1365 | BSR.A 00000101 dspppppp pppppppp pppppppp | |
1366 | ||
1367 | Bcc.B 0010cond dspppppp | |
1368 | ||
1369 | Additionally, we can synthesize longer conditional branches using | |
1370 | pairs of opcodes, one with an inverted conditional (flip LSB): | |
1371 | ||
1372 | Bcc.W 0010ncnd 00000110 00111000 dspppppp pppppppp | |
1373 | Bcc.A 0010ncnd 00000111 00000100 dspppppp pppppppp pppppppp | |
1374 | BEQ.A 00011100 00000100 dspppppp pppppppp pppppppp | |
1375 | BNE.A 00010100 00000100 dspppppp pppppppp pppppppp */ | |
1376 | ||
1377 | /* Given the opcode bytes at OP, figure out which opcode it is and | |
1378 | return the type of opcode. We use this to re-encode the opcode as | |
1379 | a different size later. */ | |
1380 | ||
1381 | static op_type_T | |
1382 | rx_opcode_type (char * op) | |
1383 | { | |
1384 | unsigned char b = (unsigned char) op[0]; | |
1385 | ||
1386 | switch (b & 0xf8) | |
1387 | { | |
1388 | case 0x08: return OT_bra; | |
1389 | case 0x10: return OT_beq; | |
1390 | case 0x18: return OT_bne; | |
1391 | } | |
1392 | ||
1393 | switch (b) | |
1394 | { | |
1395 | case 0x2e: return OT_bra; | |
1396 | case 0x38: return OT_bra; | |
1397 | case 0x04: return OT_bra; | |
1398 | ||
1399 | case 0x20: return OT_beq; | |
1400 | case 0x3a: return OT_beq; | |
1401 | ||
1402 | case 0x21: return OT_bne; | |
1403 | case 0x3b: return OT_bne; | |
1404 | ||
1405 | case 0x39: return OT_bsr; | |
1406 | case 0x05: return OT_bsr; | |
1407 | } | |
1408 | ||
1409 | if ((b & 0xf0) == 0x20) | |
1410 | return OT_bcc; | |
1411 | ||
1412 | return OT_other; | |
1413 | } | |
1414 | ||
1415 | /* Returns zero if *addrP has the target address. Else returns nonzero | |
1416 | if we cannot compute the target address yet. */ | |
1417 | ||
1418 | static int | |
1419 | rx_frag_fix_value (fragS * fragP, | |
1420 | segT segment, | |
1421 | int which, | |
1422 | addressT * addrP, | |
1423 | int need_diff, | |
1424 | addressT * sym_addr) | |
1425 | { | |
1426 | addressT addr = 0; | |
1427 | rx_bytesT * b = fragP->tc_frag_data; | |
1428 | expressionS * exp = & b->fixups[which].exp; | |
1429 | ||
1430 | if (need_diff && exp->X_op != O_subtract) | |
1431 | return 1; | |
1432 | ||
1433 | if (exp->X_add_symbol) | |
1434 | { | |
1435 | if (S_FORCE_RELOC (exp->X_add_symbol, 1)) | |
1436 | return 1; | |
1437 | if (S_GET_SEGMENT (exp->X_add_symbol) != segment) | |
1438 | return 1; | |
1439 | addr += S_GET_VALUE (exp->X_add_symbol); | |
1440 | } | |
1441 | ||
1442 | if (exp->X_op_symbol) | |
1443 | { | |
1444 | if (exp->X_op != O_subtract) | |
1445 | return 1; | |
1446 | if (S_FORCE_RELOC (exp->X_op_symbol, 1)) | |
1447 | return 1; | |
1448 | if (S_GET_SEGMENT (exp->X_op_symbol) != segment) | |
1449 | return 1; | |
1450 | addr -= S_GET_VALUE (exp->X_op_symbol); | |
1451 | } | |
1452 | if (sym_addr) | |
1453 | * sym_addr = addr; | |
1454 | addr += exp->X_add_number; | |
1455 | * addrP = addr; | |
1456 | return 0; | |
1457 | } | |
1458 | ||
1459 | /* Estimate how big the opcode is after this relax pass. The return | |
1460 | value is the difference between fr_fix and the actual size. We | |
1461 | compute the total size in rx_relax_frag and store it in fr_subtype, | |
1462 | sowe only need to subtract fx_fix and return it. */ | |
1463 | ||
1464 | int | |
1465 | md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED, segT segment ATTRIBUTE_UNUSED) | |
1466 | { | |
1467 | int opfixsize; | |
1468 | int delta; | |
1469 | ||
1470 | tprintf ("\033[32m est frag: addr %08lx fix %ld var %ld ofs %ld lit %p opc %p type %d sub %d\033[0m\n", | |
4e92bb1c AM |
1471 | (unsigned long) (fragP->fr_address |
1472 | + (fragP->fr_opcode - fragP->fr_literal)), | |
1473 | (long) fragP->fr_fix, (long) fragP->fr_var, (long) fragP->fr_offset, | |
c7927a3c NC |
1474 | fragP->fr_literal, fragP->fr_opcode, fragP->fr_type, fragP->fr_subtype); |
1475 | ||
1476 | /* This is the size of the opcode that's accounted for in fr_fix. */ | |
1477 | opfixsize = fragP->fr_fix - (fragP->fr_opcode - fragP->fr_literal); | |
1478 | /* This is the size of the opcode that isn't. */ | |
1479 | delta = (fragP->fr_subtype - opfixsize); | |
1480 | ||
1481 | tprintf (" -> opfixsize %d delta %d\n", opfixsize, delta); | |
1482 | return delta; | |
1483 | } | |
1484 | ||
0e25bcb4 DD |
1485 | /* Given a frag FRAGP, return the "next" frag that contains an |
1486 | opcode. Assumes the next opcode is relaxable, and thus rs_machine_dependent. */ | |
1487 | ||
1488 | static fragS * | |
1489 | rx_next_opcode (fragS *fragP) | |
1490 | { | |
1491 | do { | |
1492 | fragP = fragP->fr_next; | |
1493 | } while (fragP && fragP->fr_type != rs_machine_dependent); | |
1494 | return fragP; | |
1495 | } | |
1496 | ||
c7927a3c NC |
1497 | /* Given the new addresses for this relax pass, figure out how big |
1498 | each opcode must be. We store the total number of bytes needed in | |
1499 | fr_subtype. The return value is the difference between the size | |
1500 | after the last pass and the size after this pass, so we use the old | |
1501 | fr_subtype to calculate the difference. */ | |
1502 | ||
1503 | int | |
1504 | rx_relax_frag (segT segment ATTRIBUTE_UNUSED, fragS * fragP, long stretch) | |
1505 | { | |
1506 | addressT addr0, sym_addr; | |
1507 | addressT mypc; | |
1508 | int disp; | |
1509 | int oldsize = fragP->fr_subtype; | |
1510 | int newsize = oldsize; | |
1511 | op_type_T optype; | |
1512 | /* Index of relaxation we care about. */ | |
1513 | int ri; | |
1514 | ||
1515 | tprintf ("\033[36mrelax frag: addr %08lx fix %ld var %ld ofs %ld lit %p opc %p type %d sub %d str %ld\033[0m\n", | |
4e92bb1c AM |
1516 | (unsigned long) (fragP->fr_address |
1517 | + (fragP->fr_opcode - fragP->fr_literal)), | |
1518 | (long) fragP->fr_fix, (long) fragP->fr_var, (long) fragP->fr_offset, | |
c7927a3c NC |
1519 | fragP->fr_literal, fragP->fr_opcode, fragP->fr_type, fragP->fr_subtype, stretch); |
1520 | ||
0e25bcb4 DD |
1521 | mypc = fragP->fr_address + (fragP->fr_opcode - fragP->fr_literal); |
1522 | ||
1523 | if (fragP->tc_frag_data->n_base == RX_NBASE_FETCHALIGN) | |
1524 | { | |
1525 | unsigned int next_size; | |
1526 | if (fragP->fr_next == NULL) | |
1527 | return 0; | |
1528 | ||
1529 | next_size = fragP->tc_frag_data->n_ops; | |
1530 | if (next_size == 0) | |
1531 | { | |
1532 | fragS *n = rx_next_opcode (fragP); | |
1533 | next_size = n->fr_subtype; | |
1534 | } | |
1535 | ||
1536 | fragP->fr_subtype = (8-(mypc & 7)) & 7; | |
1537 | tprintf("subtype %u\n", fragP->fr_subtype); | |
1538 | if (fragP->fr_subtype >= next_size) | |
1539 | fragP->fr_subtype = 0; | |
1540 | tprintf ("\033[34m -> mypc %lu next_size %u new %d old %d delta %d (fetchalign)\033[0m\n", | |
1541 | mypc & 7, | |
1542 | next_size, fragP->fr_subtype, oldsize, fragP->fr_subtype-oldsize); | |
1543 | ||
1544 | newsize = fragP->fr_subtype; | |
1545 | ||
1546 | return newsize - oldsize; | |
1547 | } | |
1548 | ||
c7927a3c NC |
1549 | optype = rx_opcode_type (fragP->fr_opcode); |
1550 | ||
1551 | /* In the one case where we have both a disp and imm relaxation, we want | |
1552 | the imm relaxation here. */ | |
1553 | ri = 0; | |
1554 | if (fragP->tc_frag_data->n_relax > 1 | |
1555 | && fragP->tc_frag_data->relax[0].type == RX_RELAX_DISP) | |
1556 | ri = 1; | |
1557 | ||
1558 | /* Try to get the target address. */ | |
1559 | if (rx_frag_fix_value (fragP, segment, ri, & addr0, | |
1560 | fragP->tc_frag_data->relax[ri].type != RX_RELAX_BRANCH, | |
1561 | & sym_addr)) | |
1562 | { | |
1563 | /* If we don't, we must use the maximum size for the linker. | |
1564 | Note that we don't use synthetically expanded conditionals | |
1565 | for this. */ | |
1566 | switch (fragP->tc_frag_data->relax[ri].type) | |
1567 | { | |
1568 | case RX_RELAX_BRANCH: | |
1569 | switch (optype) | |
1570 | { | |
1571 | case OT_bra: | |
1572 | case OT_bsr: | |
1573 | newsize = 4; | |
1574 | break; | |
1575 | case OT_beq: | |
1576 | case OT_bne: | |
1577 | newsize = 3; | |
1578 | break; | |
1579 | case OT_bcc: | |
1580 | newsize = 2; | |
1581 | break; | |
1582 | case OT_other: | |
1583 | newsize = oldsize; | |
1584 | break; | |
1585 | } | |
1586 | break; | |
1587 | ||
1588 | case RX_RELAX_IMM: | |
1589 | newsize = fragP->tc_frag_data->relax[ri].val_ofs + 4; | |
1590 | break; | |
1591 | } | |
1592 | fragP->fr_subtype = newsize; | |
1593 | tprintf (" -> new %d old %d delta %d (external)\n", newsize, oldsize, newsize-oldsize); | |
1594 | return newsize - oldsize; | |
1595 | } | |
1596 | ||
c7927a3c NC |
1597 | if (sym_addr > mypc) |
1598 | addr0 += stretch; | |
1599 | ||
1600 | switch (fragP->tc_frag_data->relax[ri].type) | |
1601 | { | |
1602 | case RX_RELAX_BRANCH: | |
4e92bb1c AM |
1603 | tprintf ("branch, addr %08lx pc %08lx disp %ld\n", |
1604 | (unsigned long) addr0, (unsigned long) mypc, | |
1605 | (long) (addr0 - mypc)); | |
c7927a3c NC |
1606 | disp = (int) addr0 - (int) mypc; |
1607 | ||
1608 | switch (optype) | |
1609 | { | |
1610 | case OT_bcc: | |
1611 | if (disp >= -128 && (disp - (oldsize-2)) <= 127) | |
1612 | /* bcc.b */ | |
1613 | newsize = 2; | |
1614 | else if (disp >= -32768 && (disp - (oldsize-5)) <= 32767) | |
1615 | /* bncc.b/bra.w */ | |
1616 | newsize = 5; | |
1617 | else | |
1618 | /* bncc.b/bra.a */ | |
1619 | newsize = 6; | |
1620 | break; | |
1621 | ||
1622 | case OT_beq: | |
1623 | case OT_bne: | |
1624 | if ((disp - (oldsize-1)) >= 3 && (disp - (oldsize-1)) <= 10 && !linkrelax) | |
1625 | /* beq.s */ | |
1626 | newsize = 1; | |
1627 | else if (disp >= -128 && (disp - (oldsize-2)) <= 127) | |
1628 | /* beq.b */ | |
1629 | newsize = 2; | |
1630 | else if (disp >= -32768 && (disp - (oldsize-3)) <= 32767) | |
1631 | /* beq.w */ | |
1632 | newsize = 3; | |
1633 | else | |
1634 | /* bne.s/bra.a */ | |
1635 | newsize = 5; | |
1636 | break; | |
1637 | ||
1638 | case OT_bra: | |
1639 | case OT_bsr: | |
1640 | if ((disp - (oldsize-1)) >= 3 && (disp - (oldsize-1)) <= 10 && !linkrelax) | |
1641 | /* bra.s */ | |
1642 | newsize = 1; | |
1643 | else if (disp >= -128 && (disp - (oldsize-2)) <= 127) | |
1644 | /* bra.b */ | |
1645 | newsize = 2; | |
1646 | else if (disp >= -32768 && (disp - (oldsize-3)) <= 32767) | |
1647 | /* bra.w */ | |
1648 | newsize = 3; | |
1649 | else | |
1650 | /* bra.a */ | |
1651 | newsize = 4; | |
1652 | break; | |
1653 | ||
1654 | case OT_other: | |
1655 | break; | |
1656 | } | |
1657 | tprintf (" - newsize %d\n", newsize); | |
1658 | break; | |
1659 | ||
1660 | case RX_RELAX_IMM: | |
4e92bb1c AM |
1661 | tprintf ("other, addr %08lx pc %08lx LI %d OF %d\n", |
1662 | (unsigned long) addr0, (unsigned long) mypc, | |
c7927a3c NC |
1663 | fragP->tc_frag_data->relax[ri].field_pos, |
1664 | fragP->tc_frag_data->relax[ri].val_ofs); | |
1665 | ||
1666 | newsize = fragP->tc_frag_data->relax[ri].val_ofs; | |
1667 | ||
1668 | if ((long) addr0 >= -128 && (long) addr0 <= 127) | |
1669 | newsize += 1; | |
1670 | else if ((long) addr0 >= -32768 && (long) addr0 <= 32767) | |
1671 | newsize += 2; | |
1672 | else if ((long) addr0 >= -8388608 && (long) addr0 <= 8388607) | |
1673 | newsize += 3; | |
1674 | else | |
1675 | newsize += 4; | |
1676 | break; | |
1677 | ||
1678 | default: | |
1679 | break; | |
1680 | } | |
1681 | ||
1682 | if (fragP->tc_frag_data->relax[ri].type == RX_RELAX_BRANCH) | |
1683 | switch (optype) | |
1684 | { | |
1685 | case OT_bra: | |
1686 | case OT_bcc: | |
1687 | case OT_beq: | |
1688 | case OT_bne: | |
1689 | break; | |
1690 | case OT_bsr: | |
1691 | if (newsize < 3) | |
1692 | newsize = 3; | |
1693 | break; | |
1694 | case OT_other: | |
1695 | break; | |
1696 | } | |
1697 | ||
44a808b1 DD |
1698 | /* This prevents infinite loops in align-heavy sources. */ |
1699 | if (newsize < oldsize) | |
1700 | { | |
1701 | if (fragP->tc_frag_data->times_shrank > 10 | |
1702 | && fragP->tc_frag_data->times_grown > 10) | |
1703 | newsize = oldsize; | |
1704 | if (fragP->tc_frag_data->times_shrank < 20) | |
1705 | fragP->tc_frag_data->times_shrank ++; | |
1706 | } | |
1707 | else if (newsize > oldsize) | |
1708 | { | |
1709 | if (fragP->tc_frag_data->times_grown < 20) | |
1710 | fragP->tc_frag_data->times_grown ++; | |
1711 | } | |
1712 | ||
c7927a3c NC |
1713 | fragP->fr_subtype = newsize; |
1714 | tprintf (" -> new %d old %d delta %d\n", newsize, oldsize, newsize-oldsize); | |
1715 | return newsize - oldsize; | |
1716 | } | |
1717 | ||
1718 | /* This lets us test for the opcode type and the desired size in a | |
1719 | switch statement. */ | |
1720 | #define OPCODE(type,size) ((type) * 16 + (size)) | |
1721 | ||
1722 | /* Given the opcode stored in fr_opcode and the number of bytes we | |
1723 | think we need, encode a new opcode. We stored a pointer to the | |
1724 | fixup for this opcode in the tc_frag_data structure. If we can do | |
1725 | the fixup here, we change the relocation type to "none" (we test | |
1726 | for that in tc_gen_reloc) else we change it to the right type for | |
1727 | the new (biggest) opcode. */ | |
1728 | ||
1729 | void | |
1730 | md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED, | |
1731 | segT segment ATTRIBUTE_UNUSED, | |
1732 | fragS * fragP ATTRIBUTE_UNUSED) | |
1733 | { | |
1734 | rx_bytesT * rxb = fragP->tc_frag_data; | |
1735 | addressT addr0, mypc; | |
1736 | int disp; | |
1737 | int reloc_type, reloc_adjust; | |
1738 | char * op = fragP->fr_opcode; | |
1739 | int keep_reloc = 0; | |
1740 | int ri; | |
1741 | int fi = (rxb->n_fixups > 1) ? 1 : 0; | |
1742 | fixS * fix = rxb->fixups[fi].fixP; | |
1743 | ||
1744 | tprintf ("\033[31mconvrt frag: addr %08lx fix %ld var %ld ofs %ld lit %p opc %p type %d sub %d\033[0m\n", | |
4e92bb1c AM |
1745 | (unsigned long) (fragP->fr_address |
1746 | + (fragP->fr_opcode - fragP->fr_literal)), | |
1747 | (long) fragP->fr_fix, (long) fragP->fr_var, (long) fragP->fr_offset, | |
1748 | fragP->fr_literal, fragP->fr_opcode, fragP->fr_type, | |
1749 | fragP->fr_subtype); | |
c7927a3c NC |
1750 | |
1751 | #if TRACE_RELAX | |
1752 | { | |
1753 | int i; | |
1754 | ||
0e25bcb4 | 1755 | printf ("lit 0x%p opc 0x%p", fragP->fr_literal, fragP->fr_opcode); |
c7927a3c NC |
1756 | for (i = 0; i < 10; i++) |
1757 | printf (" %02x", (unsigned char) (fragP->fr_opcode[i])); | |
1758 | printf ("\n"); | |
1759 | } | |
1760 | #endif | |
1761 | ||
0e25bcb4 DD |
1762 | if (fragP->tc_frag_data->n_base == RX_NBASE_FETCHALIGN) |
1763 | { | |
1764 | int count = fragP->fr_subtype; | |
1765 | if (count == 0) | |
1766 | ; | |
1767 | else if (count > BIGGEST_NOP) | |
1768 | { | |
1769 | op[0] = 0x2e; | |
1770 | op[1] = count; | |
1771 | } | |
1772 | else if (count > 0) | |
1773 | { | |
1774 | memcpy (op, nops[count], count); | |
1775 | } | |
1776 | } | |
1777 | ||
c7927a3c NC |
1778 | /* In the one case where we have both a disp and imm relaxation, we want |
1779 | the imm relaxation here. */ | |
1780 | ri = 0; | |
1781 | if (fragP->tc_frag_data->n_relax > 1 | |
1782 | && fragP->tc_frag_data->relax[0].type == RX_RELAX_DISP) | |
1783 | ri = 1; | |
1784 | ||
eb6fae19 DD |
1785 | /* We used a new frag for this opcode, so the opcode address should |
1786 | be the frag address. */ | |
1787 | mypc = fragP->fr_address + (fragP->fr_opcode - fragP->fr_literal); | |
1788 | ||
c7927a3c NC |
1789 | /* Try to get the target address. If we fail here, we just use the |
1790 | largest format. */ | |
1791 | if (rx_frag_fix_value (fragP, segment, 0, & addr0, | |
1792 | fragP->tc_frag_data->relax[ri].type != RX_RELAX_BRANCH, 0)) | |
eb6fae19 DD |
1793 | { |
1794 | /* We don't know the target address. */ | |
1795 | keep_reloc = 1; | |
1796 | addr0 = 0; | |
1797 | disp = 0; | |
1798 | } | |
1799 | else | |
1800 | { | |
1801 | /* We know the target address, and it's in addr0. */ | |
1802 | disp = (int) addr0 - (int) mypc; | |
1803 | } | |
c7927a3c NC |
1804 | |
1805 | if (linkrelax) | |
1806 | keep_reloc = 1; | |
1807 | ||
c7927a3c NC |
1808 | reloc_type = BFD_RELOC_NONE; |
1809 | reloc_adjust = 0; | |
1810 | ||
4e92bb1c AM |
1811 | tprintf ("convert, op is %d, disp %d (%lx-%lx)\n", |
1812 | rx_opcode_type (fragP->fr_opcode), disp, | |
1813 | (unsigned long) addr0, (unsigned long) mypc); | |
c7927a3c NC |
1814 | switch (fragP->tc_frag_data->relax[ri].type) |
1815 | { | |
1816 | case RX_RELAX_BRANCH: | |
1817 | switch (OPCODE (rx_opcode_type (fragP->fr_opcode), fragP->fr_subtype)) | |
1818 | { | |
1819 | case OPCODE (OT_bra, 1): /* BRA.S - no change. */ | |
1820 | op[0] = 0x08 + (disp & 7); | |
1821 | break; | |
1822 | case OPCODE (OT_bra, 2): /* BRA.B - 8 bit. */ | |
1823 | op[0] = 0x2e; | |
1824 | op[1] = disp; | |
1825 | reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE; | |
1826 | reloc_adjust = 1; | |
1827 | break; | |
1828 | case OPCODE (OT_bra, 3): /* BRA.W - 16 bit. */ | |
1829 | op[0] = 0x38; | |
1830 | #if RX_OPCODE_BIG_ENDIAN | |
1831 | op[1] = (disp >> 8) & 0xff; | |
1832 | op[2] = disp; | |
1833 | #else | |
1834 | op[2] = (disp >> 8) & 0xff; | |
1835 | op[1] = disp; | |
1836 | #endif | |
1837 | reloc_adjust = 1; | |
1838 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; | |
1839 | break; | |
1840 | case OPCODE (OT_bra, 4): /* BRA.A - 24 bit. */ | |
1841 | op[0] = 0x04; | |
1842 | #if RX_OPCODE_BIG_ENDIAN | |
1843 | op[1] = (disp >> 16) & 0xff; | |
1844 | op[2] = (disp >> 8) & 0xff; | |
1845 | op[3] = disp; | |
1846 | #else | |
1847 | op[3] = (disp >> 16) & 0xff; | |
1848 | op[2] = (disp >> 8) & 0xff; | |
1849 | op[1] = disp; | |
1850 | #endif | |
1851 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; | |
1852 | reloc_adjust = 1; | |
1853 | break; | |
1854 | ||
1855 | case OPCODE (OT_beq, 1): /* BEQ.S - no change. */ | |
1856 | op[0] = 0x10 + (disp & 7); | |
1857 | break; | |
1858 | case OPCODE (OT_beq, 2): /* BEQ.B - 8 bit. */ | |
1859 | op[0] = 0x20; | |
1860 | op[1] = disp; | |
1861 | reloc_adjust = 1; | |
1862 | reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE; | |
1863 | break; | |
1864 | case OPCODE (OT_beq, 3): /* BEQ.W - 16 bit. */ | |
1865 | op[0] = 0x3a; | |
1866 | #if RX_OPCODE_BIG_ENDIAN | |
1867 | op[1] = (disp >> 8) & 0xff; | |
1868 | op[2] = disp; | |
1869 | #else | |
1870 | op[2] = (disp >> 8) & 0xff; | |
1871 | op[1] = disp; | |
1872 | #endif | |
1873 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; | |
1874 | reloc_adjust = 1; | |
1875 | break; | |
1876 | case OPCODE (OT_beq, 5): /* BEQ.A - synthetic. */ | |
53d780c9 | 1877 | op[0] = 0x1d; /* bne.s .+5. */ |
c7927a3c NC |
1878 | op[1] = 0x04; /* bra.a dsp:24. */ |
1879 | disp -= 1; | |
1880 | #if RX_OPCODE_BIG_ENDIAN | |
1881 | op[2] = (disp >> 16) & 0xff; | |
1882 | op[3] = (disp >> 8) & 0xff; | |
1883 | op[4] = disp; | |
1884 | #else | |
1885 | op[4] = (disp >> 16) & 0xff; | |
1886 | op[3] = (disp >> 8) & 0xff; | |
1887 | op[2] = disp; | |
1888 | #endif | |
1889 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; | |
1890 | reloc_adjust = 2; | |
1891 | break; | |
1892 | ||
1893 | case OPCODE (OT_bne, 1): /* BNE.S - no change. */ | |
1894 | op[0] = 0x18 + (disp & 7); | |
1895 | break; | |
1896 | case OPCODE (OT_bne, 2): /* BNE.B - 8 bit. */ | |
1897 | op[0] = 0x21; | |
1898 | op[1] = disp; | |
1899 | reloc_adjust = 1; | |
1900 | reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE; | |
1901 | break; | |
1902 | case OPCODE (OT_bne, 3): /* BNE.W - 16 bit. */ | |
1903 | op[0] = 0x3b; | |
1904 | #if RX_OPCODE_BIG_ENDIAN | |
1905 | op[1] = (disp >> 8) & 0xff; | |
1906 | op[2] = disp; | |
1907 | #else | |
1908 | op[2] = (disp >> 8) & 0xff; | |
1909 | op[1] = disp; | |
1910 | #endif | |
1911 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; | |
1912 | reloc_adjust = 1; | |
1913 | break; | |
1914 | case OPCODE (OT_bne, 5): /* BNE.A - synthetic. */ | |
53d780c9 | 1915 | op[0] = 0x15; /* beq.s .+5. */ |
c7927a3c NC |
1916 | op[1] = 0x04; /* bra.a dsp:24. */ |
1917 | disp -= 1; | |
1918 | #if RX_OPCODE_BIG_ENDIAN | |
1919 | op[2] = (disp >> 16) & 0xff; | |
1920 | op[3] = (disp >> 8) & 0xff; | |
1921 | op[4] = disp; | |
1922 | #else | |
1923 | op[4] = (disp >> 16) & 0xff; | |
1924 | op[3] = (disp >> 8) & 0xff; | |
1925 | op[2] = disp; | |
1926 | #endif | |
1927 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; | |
1928 | reloc_adjust = 2; | |
1929 | break; | |
1930 | ||
1931 | case OPCODE (OT_bsr, 3): /* BSR.W - 16 bit. */ | |
1932 | op[0] = 0x39; | |
1933 | #if RX_OPCODE_BIG_ENDIAN | |
1934 | op[1] = (disp >> 8) & 0xff; | |
1935 | op[2] = disp; | |
1936 | #else | |
1937 | op[2] = (disp >> 8) & 0xff; | |
1938 | op[1] = disp; | |
1939 | #endif | |
1940 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; | |
1941 | reloc_adjust = 0; | |
1942 | break; | |
1943 | case OPCODE (OT_bsr, 4): /* BSR.A - 24 bit. */ | |
1944 | op[0] = 0x05; | |
1945 | #if RX_OPCODE_BIG_ENDIAN | |
1946 | op[1] = (disp >> 16) & 0xff; | |
1947 | op[2] = (disp >> 8) & 0xff; | |
1948 | op[3] = disp; | |
1949 | #else | |
1950 | op[3] = (disp >> 16) & 0xff; | |
1951 | op[2] = (disp >> 8) & 0xff; | |
1952 | op[1] = disp; | |
1953 | #endif | |
1954 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; | |
1955 | reloc_adjust = 0; | |
1956 | break; | |
1957 | ||
1958 | case OPCODE (OT_bcc, 2): /* Bcond.B - 8 bit. */ | |
1959 | op[1] = disp; | |
1960 | reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE; | |
1961 | break; | |
1962 | case OPCODE (OT_bcc, 5): /* Bcond.W - synthetic. */ | |
1963 | op[0] ^= 1; /* Invert condition. */ | |
1964 | op[1] = 5; /* Displacement. */ | |
1965 | op[2] = 0x38; | |
1966 | disp -= 2; | |
1967 | #if RX_OPCODE_BIG_ENDIAN | |
1968 | op[3] = (disp >> 8) & 0xff; | |
1969 | op[4] = disp; | |
1970 | #else | |
1971 | op[4] = (disp >> 8) & 0xff; | |
1972 | op[3] = disp; | |
1973 | #endif | |
1974 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; | |
1975 | reloc_adjust = 2; | |
1976 | break; | |
1977 | case OPCODE (OT_bcc, 6): /* Bcond.S - synthetic. */ | |
1978 | op[0] ^= 1; /* Invert condition. */ | |
1979 | op[1] = 6; /* Displacement. */ | |
1980 | op[2] = 0x04; | |
1981 | disp -= 2; | |
1982 | #if RX_OPCODE_BIG_ENDIAN | |
1983 | op[3] = (disp >> 16) & 0xff; | |
1984 | op[4] = (disp >> 8) & 0xff; | |
1985 | op[5] = disp; | |
1986 | #else | |
1987 | op[5] = (disp >> 16) & 0xff; | |
1988 | op[4] = (disp >> 8) & 0xff; | |
1989 | op[3] = disp; | |
1990 | #endif | |
1991 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; | |
1992 | reloc_adjust = 2; | |
1993 | break; | |
1994 | ||
1995 | default: | |
1996 | /* These are opcodes we'll relax in th linker, later. */ | |
1997 | if (rxb->n_fixups) | |
1998 | reloc_type = rxb->fixups[ri].fixP->fx_r_type; | |
1999 | break; | |
2000 | } | |
2001 | break; | |
2002 | ||
2003 | case RX_RELAX_IMM: | |
2004 | { | |
2005 | int nbytes = fragP->fr_subtype - fragP->tc_frag_data->relax[ri].val_ofs; | |
2006 | int li; | |
2007 | char * imm = op + fragP->tc_frag_data->relax[ri].val_ofs; | |
2008 | ||
2009 | switch (nbytes) | |
2010 | { | |
2011 | case 1: | |
2012 | li = 1; | |
2013 | imm[0] = addr0; | |
2014 | reloc_type = BFD_RELOC_8; | |
2015 | break; | |
2016 | case 2: | |
2017 | li = 2; | |
2018 | #if RX_OPCODE_BIG_ENDIAN | |
2019 | imm[1] = addr0; | |
2020 | imm[0] = addr0 >> 8; | |
2021 | #else | |
2022 | imm[0] = addr0; | |
2023 | imm[1] = addr0 >> 8; | |
2024 | #endif | |
2025 | reloc_type = BFD_RELOC_RX_16_OP; | |
2026 | break; | |
2027 | case 3: | |
2028 | li = 3; | |
2029 | #if RX_OPCODE_BIG_ENDIAN | |
2030 | imm[2] = addr0; | |
2031 | imm[1] = addr0 >> 8; | |
2032 | imm[0] = addr0 >> 16; | |
2033 | #else | |
2034 | imm[0] = addr0; | |
2035 | imm[1] = addr0 >> 8; | |
2036 | imm[2] = addr0 >> 16; | |
2037 | #endif | |
2038 | reloc_type = BFD_RELOC_RX_24_OP; | |
2039 | break; | |
2040 | case 4: | |
2041 | li = 0; | |
2042 | #if RX_OPCODE_BIG_ENDIAN | |
2043 | imm[3] = addr0; | |
2044 | imm[2] = addr0 >> 8; | |
2045 | imm[1] = addr0 >> 16; | |
2046 | imm[0] = addr0 >> 24; | |
2047 | #else | |
2048 | imm[0] = addr0; | |
2049 | imm[1] = addr0 >> 8; | |
2050 | imm[2] = addr0 >> 16; | |
2051 | imm[3] = addr0 >> 24; | |
2052 | #endif | |
2053 | reloc_type = BFD_RELOC_RX_32_OP; | |
2054 | break; | |
2055 | default: | |
2056 | as_bad (_("invalid immediate size")); | |
2057 | li = -1; | |
2058 | } | |
2059 | ||
2060 | switch (fragP->tc_frag_data->relax[ri].field_pos) | |
2061 | { | |
2062 | case 6: | |
2063 | op[0] &= 0xfc; | |
2064 | op[0] |= li; | |
2065 | break; | |
2066 | case 12: | |
2067 | op[1] &= 0xf3; | |
2068 | op[1] |= li << 2; | |
2069 | break; | |
2070 | case 20: | |
2071 | op[2] &= 0xf3; | |
2072 | op[2] |= li << 2; | |
2073 | break; | |
2074 | default: | |
2075 | as_bad (_("invalid immediate field position")); | |
2076 | } | |
2077 | } | |
2078 | break; | |
2079 | ||
2080 | default: | |
2081 | if (rxb->n_fixups) | |
2082 | { | |
2083 | reloc_type = fix->fx_r_type; | |
2084 | reloc_adjust = 0; | |
2085 | } | |
2086 | break; | |
2087 | } | |
2088 | ||
2089 | if (rxb->n_fixups) | |
2090 | { | |
2091 | ||
2092 | fix->fx_r_type = reloc_type; | |
2093 | fix->fx_where += reloc_adjust; | |
2094 | switch (reloc_type) | |
2095 | { | |
2096 | case BFD_RELOC_NONE: | |
2097 | fix->fx_size = 0; | |
2098 | break; | |
2099 | case BFD_RELOC_8: | |
2100 | fix->fx_size = 1; | |
2101 | break; | |
2102 | case BFD_RELOC_16_PCREL: | |
2103 | case BFD_RELOC_RX_16_OP: | |
2104 | fix->fx_size = 2; | |
2105 | break; | |
2106 | case BFD_RELOC_24_PCREL: | |
2107 | case BFD_RELOC_RX_24_OP: | |
2108 | fix->fx_size = 3; | |
2109 | break; | |
2110 | case BFD_RELOC_RX_32_OP: | |
2111 | fix->fx_size = 4; | |
2112 | break; | |
2113 | } | |
2114 | } | |
2115 | ||
2116 | fragP->fr_fix = fragP->fr_subtype + (fragP->fr_opcode - fragP->fr_literal); | |
4e92bb1c | 2117 | tprintf ("fragP->fr_fix now %ld (%d + (%p - %p)\n", (long) fragP->fr_fix, |
c7927a3c NC |
2118 | fragP->fr_subtype, fragP->fr_opcode, fragP->fr_literal); |
2119 | fragP->fr_var = 0; | |
2120 | ||
2121 | if (fragP->fr_next != NULL | |
2122 | && ((offsetT) (fragP->fr_next->fr_address - fragP->fr_address) | |
2123 | != fragP->fr_fix)) | |
2124 | as_bad (_("bad frag at %p : fix %ld addr %ld %ld \n"), fragP, | |
4e92bb1c AM |
2125 | (long) fragP->fr_fix, |
2126 | (long) fragP->fr_address, (long) fragP->fr_next->fr_address); | |
c7927a3c NC |
2127 | } |
2128 | ||
2129 | #undef OPCODE | |
2130 | \f | |
2131 | int | |
2132 | rx_validate_fix_sub (struct fix * f) | |
2133 | { | |
e8ef21bf DD |
2134 | /* We permit the subtraction of two symbols in a few cases. */ |
2135 | /* mov #sym1-sym2, R3 */ | |
2136 | if (f->fx_r_type == BFD_RELOC_RX_32_OP) | |
2137 | return 1; | |
2138 | /* .long sym1-sym2 */ | |
c7927a3c NC |
2139 | if (f->fx_r_type == BFD_RELOC_RX_DIFF |
2140 | && ! f->fx_pcrel | |
e8ef21bf | 2141 | && (f->fx_size == 4 || f->fx_size == 2 || f->fx_size == 1)) |
c7927a3c NC |
2142 | return 1; |
2143 | return 0; | |
2144 | } | |
2145 | ||
2146 | long | |
2147 | md_pcrel_from_section (fixS * fixP, segT sec) | |
2148 | { | |
2149 | long rv; | |
2150 | ||
2151 | if (fixP->fx_addsy != NULL | |
2152 | && (! S_IS_DEFINED (fixP->fx_addsy) | |
2153 | || S_GET_SEGMENT (fixP->fx_addsy) != sec)) | |
2154 | /* The symbol is undefined (or is defined but not in this section). | |
2155 | Let the linker figure it out. */ | |
2156 | return 0; | |
2157 | ||
2158 | rv = fixP->fx_frag->fr_address + fixP->fx_where; | |
2159 | switch (fixP->fx_r_type) | |
2160 | { | |
2161 | case BFD_RELOC_RX_DIR3U_PCREL: | |
2162 | return rv; | |
2163 | default: | |
2164 | return rv - 1; | |
2165 | } | |
2166 | } | |
2167 | ||
2168 | void | |
2169 | rx_cons_fix_new (fragS * frag, | |
2170 | int where, | |
2171 | int size, | |
62ebcb5c AM |
2172 | expressionS * exp, |
2173 | bfd_reloc_code_real_type type) | |
c7927a3c | 2174 | { |
c7927a3c NC |
2175 | switch (size) |
2176 | { | |
2177 | case 1: | |
2178 | type = BFD_RELOC_8; | |
2179 | break; | |
2180 | case 2: | |
2181 | type = BFD_RELOC_16; | |
2182 | break; | |
2183 | case 3: | |
2184 | type = BFD_RELOC_24; | |
2185 | break; | |
2186 | case 4: | |
2187 | type = BFD_RELOC_32; | |
2188 | break; | |
2189 | default: | |
2190 | as_bad (_("unsupported constant size %d\n"), size); | |
2191 | return; | |
2192 | } | |
2193 | ||
2194 | if (exp->X_op == O_subtract && exp->X_op_symbol) | |
2195 | { | |
2196 | if (size != 4 && size != 2 && size != 1) | |
2197 | as_bad (_("difference of two symbols only supported with .long, .short, or .byte")); | |
2198 | else | |
2199 | type = BFD_RELOC_RX_DIFF; | |
2200 | } | |
2201 | ||
2202 | fix_new_exp (frag, where, (int) size, exp, 0, type); | |
2203 | } | |
2204 | ||
2205 | void | |
2206 | md_apply_fix (struct fix * f ATTRIBUTE_UNUSED, | |
2207 | valueT * t ATTRIBUTE_UNUSED, | |
2208 | segT s ATTRIBUTE_UNUSED) | |
2209 | { | |
2210 | /* Instruction bytes are always little endian. */ | |
2211 | char * op; | |
2212 | unsigned long val; | |
2213 | ||
2214 | if (f->fx_addsy && S_FORCE_RELOC (f->fx_addsy, 1)) | |
2215 | return; | |
2216 | if (f->fx_subsy && S_FORCE_RELOC (f->fx_subsy, 1)) | |
2217 | return; | |
2218 | ||
2219 | #define OP2(x) op[target_big_endian ? 1-x : x] | |
2220 | #define OP3(x) op[target_big_endian ? 2-x : x] | |
2221 | #define OP4(x) op[target_big_endian ? 3-x : x] | |
2222 | ||
2223 | op = f->fx_frag->fr_literal + f->fx_where; | |
2224 | val = (unsigned long) * t; | |
2225 | ||
2226 | /* Opcode words are always the same endian. Data words are either | |
2227 | big or little endian. */ | |
2228 | ||
2229 | switch (f->fx_r_type) | |
2230 | { | |
2231 | case BFD_RELOC_NONE: | |
2232 | break; | |
2233 | ||
2234 | case BFD_RELOC_RX_RELAX: | |
2235 | f->fx_done = 1; | |
2236 | break; | |
2237 | ||
2238 | case BFD_RELOC_RX_DIR3U_PCREL: | |
2239 | if (val < 3 || val > 10) | |
2240 | as_bad_where (f->fx_file, f->fx_line, | |
2241 | _("jump not 3..10 bytes away (is %d)"), (int) val); | |
2242 | op[0] &= 0xf8; | |
2243 | op[0] |= val & 0x07; | |
2244 | break; | |
2245 | ||
2246 | case BFD_RELOC_8: | |
2247 | case BFD_RELOC_8_PCREL: | |
2248 | case BFD_RELOC_RX_8U: | |
2249 | op[0] = val; | |
2250 | break; | |
2251 | ||
2252 | case BFD_RELOC_16: | |
2253 | OP2(1) = val & 0xff; | |
2254 | OP2(0) = (val >> 8) & 0xff; | |
2255 | break; | |
2256 | ||
2257 | case BFD_RELOC_16_PCREL: | |
2258 | case BFD_RELOC_RX_16_OP: | |
2259 | case BFD_RELOC_RX_16U: | |
2260 | #if RX_OPCODE_BIG_ENDIAN | |
2261 | op[1] = val & 0xff; | |
2262 | op[0] = (val >> 8) & 0xff; | |
2263 | #else | |
2264 | op[0] = val & 0xff; | |
2265 | op[1] = (val >> 8) & 0xff; | |
2266 | #endif | |
2267 | break; | |
2268 | ||
2269 | case BFD_RELOC_24: | |
2270 | OP3(0) = val & 0xff; | |
2271 | OP3(1) = (val >> 8) & 0xff; | |
2272 | OP3(2) = (val >> 16) & 0xff; | |
2273 | break; | |
2274 | ||
2275 | case BFD_RELOC_24_PCREL: | |
2276 | case BFD_RELOC_RX_24_OP: | |
2277 | case BFD_RELOC_RX_24U: | |
2278 | #if RX_OPCODE_BIG_ENDIAN | |
2279 | op[2] = val & 0xff; | |
2280 | op[1] = (val >> 8) & 0xff; | |
2281 | op[0] = (val >> 16) & 0xff; | |
2282 | #else | |
2283 | op[0] = val & 0xff; | |
2284 | op[1] = (val >> 8) & 0xff; | |
2285 | op[2] = (val >> 16) & 0xff; | |
2286 | #endif | |
2287 | break; | |
2288 | ||
2289 | case BFD_RELOC_RX_DIFF: | |
2290 | switch (f->fx_size) | |
2291 | { | |
2292 | case 1: | |
2293 | op[0] = val & 0xff; | |
2294 | break; | |
2295 | case 2: | |
2296 | OP2(0) = val & 0xff; | |
2297 | OP2(1) = (val >> 8) & 0xff; | |
2298 | break; | |
2299 | case 4: | |
2300 | OP4(0) = val & 0xff; | |
2301 | OP4(1) = (val >> 8) & 0xff; | |
2302 | OP4(2) = (val >> 16) & 0xff; | |
2303 | OP4(3) = (val >> 24) & 0xff; | |
2304 | break; | |
2305 | } | |
2306 | break; | |
2307 | ||
2308 | case BFD_RELOC_32: | |
2309 | OP4(0) = val & 0xff; | |
2310 | OP4(1) = (val >> 8) & 0xff; | |
2311 | OP4(2) = (val >> 16) & 0xff; | |
2312 | OP4(3) = (val >> 24) & 0xff; | |
2313 | break; | |
2314 | ||
2315 | case BFD_RELOC_RX_32_OP: | |
2316 | #if RX_OPCODE_BIG_ENDIAN | |
2317 | op[3] = val & 0xff; | |
2318 | op[2] = (val >> 8) & 0xff; | |
2319 | op[1] = (val >> 16) & 0xff; | |
2320 | op[0] = (val >> 24) & 0xff; | |
2321 | #else | |
2322 | op[0] = val & 0xff; | |
2323 | op[1] = (val >> 8) & 0xff; | |
2324 | op[2] = (val >> 16) & 0xff; | |
2325 | op[3] = (val >> 24) & 0xff; | |
2326 | #endif | |
2327 | break; | |
2328 | ||
2329 | case BFD_RELOC_RX_NEG8: | |
2330 | op[0] = - val; | |
2331 | break; | |
2332 | ||
2333 | case BFD_RELOC_RX_NEG16: | |
2334 | val = -val; | |
2335 | #if RX_OPCODE_BIG_ENDIAN | |
2336 | op[1] = val & 0xff; | |
2337 | op[0] = (val >> 8) & 0xff; | |
2338 | #else | |
2339 | op[0] = val & 0xff; | |
2340 | op[1] = (val >> 8) & 0xff; | |
2341 | #endif | |
2342 | break; | |
2343 | ||
2344 | case BFD_RELOC_RX_NEG24: | |
2345 | val = -val; | |
2346 | #if RX_OPCODE_BIG_ENDIAN | |
2347 | op[2] = val & 0xff; | |
2348 | op[1] = (val >> 8) & 0xff; | |
2349 | op[0] = (val >> 16) & 0xff; | |
2350 | #else | |
2351 | op[0] = val & 0xff; | |
2352 | op[1] = (val >> 8) & 0xff; | |
2353 | op[2] = (val >> 16) & 0xff; | |
2354 | #endif | |
2355 | break; | |
2356 | ||
2357 | case BFD_RELOC_RX_NEG32: | |
2358 | val = -val; | |
2359 | #if RX_OPCODE_BIG_ENDIAN | |
2360 | op[3] = val & 0xff; | |
2361 | op[2] = (val >> 8) & 0xff; | |
2362 | op[1] = (val >> 16) & 0xff; | |
2363 | op[0] = (val >> 24) & 0xff; | |
2364 | #else | |
2365 | op[0] = val & 0xff; | |
2366 | op[1] = (val >> 8) & 0xff; | |
2367 | op[2] = (val >> 16) & 0xff; | |
2368 | op[3] = (val >> 24) & 0xff; | |
2369 | #endif | |
2370 | break; | |
2371 | ||
2372 | case BFD_RELOC_RX_GPRELL: | |
2373 | val >>= 1; | |
2374 | case BFD_RELOC_RX_GPRELW: | |
2375 | val >>= 1; | |
2376 | case BFD_RELOC_RX_GPRELB: | |
2377 | #if RX_OPCODE_BIG_ENDIAN | |
2378 | op[1] = val & 0xff; | |
2379 | op[0] = (val >> 8) & 0xff; | |
2380 | #else | |
2381 | op[0] = val & 0xff; | |
2382 | op[1] = (val >> 8) & 0xff; | |
2383 | #endif | |
2384 | break; | |
2385 | ||
2386 | default: | |
2387 | as_bad (_("Unknown reloc in md_apply_fix: %s"), | |
2388 | bfd_get_reloc_code_name (f->fx_r_type)); | |
2389 | break; | |
2390 | } | |
2391 | ||
2392 | if (f->fx_addsy == NULL) | |
2393 | f->fx_done = 1; | |
2394 | } | |
2395 | ||
2396 | arelent ** | |
d4cb0ea0 | 2397 | tc_gen_reloc (asection * sec ATTRIBUTE_UNUSED, fixS * fixp) |
c7927a3c NC |
2398 | { |
2399 | static arelent * reloc[5]; | |
d4cb0ea0 | 2400 | bfd_boolean is_opcode = FALSE; |
c7927a3c NC |
2401 | |
2402 | if (fixp->fx_r_type == BFD_RELOC_NONE) | |
2403 | { | |
2404 | reloc[0] = NULL; | |
2405 | return reloc; | |
2406 | } | |
2407 | ||
2408 | if (fixp->fx_subsy | |
2409 | && S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) | |
2410 | { | |
2411 | fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy); | |
2412 | fixp->fx_subsy = NULL; | |
2413 | } | |
2414 | ||
2415 | reloc[0] = (arelent *) xmalloc (sizeof (arelent)); | |
2416 | reloc[0]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2417 | * reloc[0]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
2418 | reloc[0]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2419 | reloc[0]->addend = fixp->fx_offset; | |
2420 | ||
e8ef21bf DD |
2421 | if (fixp->fx_r_type == BFD_RELOC_RX_32_OP |
2422 | && fixp->fx_subsy) | |
2423 | { | |
2424 | fixp->fx_r_type = BFD_RELOC_RX_DIFF; | |
d4cb0ea0 | 2425 | is_opcode = TRUE; |
e8ef21bf | 2426 | } |
d4cb0ea0 NC |
2427 | else if (sec) |
2428 | is_opcode = sec->flags & SEC_CODE; | |
2429 | ||
c7927a3c NC |
2430 | /* Certain BFD relocations cannot be translated directly into |
2431 | a single (non-Red Hat) RX relocation, but instead need | |
2432 | multiple RX relocations - handle them here. */ | |
2433 | switch (fixp->fx_r_type) | |
2434 | { | |
2435 | case BFD_RELOC_RX_DIFF: | |
2436 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2437 | ||
2438 | reloc[1] = (arelent *) xmalloc (sizeof (arelent)); | |
2439 | reloc[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2440 | * reloc[1]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy); | |
2441 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2442 | reloc[1]->addend = 0; | |
2443 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2444 | ||
2445 | reloc[2] = (arelent *) xmalloc (sizeof (arelent)); | |
2446 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT); | |
2447 | reloc[2]->addend = 0; | |
2448 | reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2449 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2450 | ||
2451 | reloc[3] = (arelent *) xmalloc (sizeof (arelent)); | |
2452 | switch (fixp->fx_size) | |
2453 | { | |
2454 | case 1: | |
2455 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS8); | |
2456 | break; | |
2457 | case 2: | |
e8ef21bf DD |
2458 | if (!is_opcode && target_big_endian) |
2459 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16_REV); | |
d4cb0ea0 NC |
2460 | else if (is_opcode) |
2461 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16UL); | |
e8ef21bf DD |
2462 | else |
2463 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16); | |
c7927a3c NC |
2464 | break; |
2465 | case 4: | |
e8ef21bf DD |
2466 | if (!is_opcode && target_big_endian) |
2467 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32_REV); | |
2468 | else | |
2469 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32); | |
c7927a3c NC |
2470 | break; |
2471 | } | |
2472 | reloc[3]->addend = 0; | |
2473 | reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2474 | reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2475 | ||
2476 | reloc[4] = NULL; | |
2477 | break; | |
2478 | ||
2479 | case BFD_RELOC_RX_GPRELL: | |
2480 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2481 | ||
2482 | reloc[1] = (arelent *) xmalloc (sizeof (arelent)); | |
2483 | reloc[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2484 | if (gp_symbol == NULL) | |
2485 | { | |
2486 | if (symbol_table_frozen) | |
2487 | { | |
2488 | symbolS * gp; | |
2489 | ||
2490 | gp = symbol_find ("__gp"); | |
2491 | if (gp == NULL) | |
2492 | as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified")); | |
2493 | else | |
2494 | gp_symbol = symbol_get_bfdsym (gp); | |
2495 | } | |
2496 | else | |
2497 | gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp")); | |
2498 | } | |
2499 | * reloc[1]->sym_ptr_ptr = gp_symbol; | |
2500 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2501 | reloc[1]->addend = 0; | |
2502 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2503 | ||
2504 | reloc[2] = (arelent *) xmalloc (sizeof (arelent)); | |
2505 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT); | |
2506 | reloc[2]->addend = 0; | |
2507 | reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2508 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2509 | ||
2510 | reloc[3] = (arelent *) xmalloc (sizeof (arelent)); | |
2511 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16UL); | |
2512 | reloc[3]->addend = 0; | |
2513 | reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2514 | reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2515 | ||
2516 | reloc[4] = NULL; | |
2517 | break; | |
2518 | ||
2519 | case BFD_RELOC_RX_GPRELW: | |
2520 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2521 | ||
2522 | reloc[1] = (arelent *) xmalloc (sizeof (arelent)); | |
2523 | reloc[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2524 | if (gp_symbol == NULL) | |
2525 | { | |
2526 | if (symbol_table_frozen) | |
2527 | { | |
2528 | symbolS * gp; | |
2529 | ||
2530 | gp = symbol_find ("__gp"); | |
2531 | if (gp == NULL) | |
2532 | as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified")); | |
2533 | else | |
2534 | gp_symbol = symbol_get_bfdsym (gp); | |
2535 | } | |
2536 | else | |
2537 | gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp")); | |
2538 | } | |
2539 | * reloc[1]->sym_ptr_ptr = gp_symbol; | |
2540 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2541 | reloc[1]->addend = 0; | |
2542 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2543 | ||
2544 | reloc[2] = (arelent *) xmalloc (sizeof (arelent)); | |
2545 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT); | |
2546 | reloc[2]->addend = 0; | |
2547 | reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2548 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2549 | ||
2550 | reloc[3] = (arelent *) xmalloc (sizeof (arelent)); | |
2551 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16UW); | |
2552 | reloc[3]->addend = 0; | |
2553 | reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2554 | reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2555 | ||
2556 | reloc[4] = NULL; | |
2557 | break; | |
2558 | ||
2559 | case BFD_RELOC_RX_GPRELB: | |
2560 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2561 | ||
2562 | reloc[1] = (arelent *) xmalloc (sizeof (arelent)); | |
2563 | reloc[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2564 | if (gp_symbol == NULL) | |
2565 | { | |
2566 | if (symbol_table_frozen) | |
2567 | { | |
2568 | symbolS * gp; | |
2569 | ||
2570 | gp = symbol_find ("__gp"); | |
2571 | if (gp == NULL) | |
2572 | as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified")); | |
2573 | else | |
2574 | gp_symbol = symbol_get_bfdsym (gp); | |
2575 | } | |
2576 | else | |
2577 | gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp")); | |
2578 | } | |
2579 | * reloc[1]->sym_ptr_ptr = gp_symbol; | |
2580 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2581 | reloc[1]->addend = 0; | |
2582 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2583 | ||
2584 | reloc[2] = (arelent *) xmalloc (sizeof (arelent)); | |
2585 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT); | |
2586 | reloc[2]->addend = 0; | |
2587 | reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2588 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2589 | ||
2590 | reloc[3] = (arelent *) xmalloc (sizeof (arelent)); | |
2591 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16U); | |
2592 | reloc[3]->addend = 0; | |
2593 | reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2594 | reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2595 | ||
2596 | reloc[4] = NULL; | |
2597 | break; | |
2598 | ||
9689e3a3 DD |
2599 | case BFD_RELOC_RX_NEG32: |
2600 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2601 | ||
2602 | reloc[1] = (arelent *) xmalloc (sizeof (arelent)); | |
2603 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_NEG); | |
2604 | reloc[1]->addend = 0; | |
2605 | reloc[1]->sym_ptr_ptr = reloc[0]->sym_ptr_ptr; | |
2606 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2607 | ||
2608 | reloc[2] = (arelent *) xmalloc (sizeof (arelent)); | |
2609 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32); | |
2610 | reloc[2]->addend = 0; | |
2611 | reloc[2]->sym_ptr_ptr = reloc[0]->sym_ptr_ptr; | |
2612 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2613 | ||
2614 | reloc[3] = NULL; | |
2615 | break; | |
2616 | ||
c7927a3c NC |
2617 | default: |
2618 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
2619 | reloc[1] = NULL; | |
2620 | break; | |
2621 | } | |
2622 | ||
2623 | return reloc; | |
2624 | } | |
2625 | ||
2626 | /* Set the ELF specific flags. */ | |
2627 | ||
2628 | void | |
2629 | rx_elf_final_processing (void) | |
2630 | { | |
2631 | elf_elfheader (stdoutput)->e_flags |= elf_flags; | |
2632 | } | |
2633 | ||
2634 | /* Scan the current input line for occurances of Renesas | |
2635 | local labels and replace them with the GAS version. */ | |
2636 | ||
2637 | void | |
2638 | rx_start_line (void) | |
2639 | { | |
2640 | int in_double_quote = 0; | |
2641 | int in_single_quote = 0; | |
2642 | int done = 0; | |
2643 | char * p = input_line_pointer; | |
2644 | ||
2645 | /* Scan the line looking for question marks. Skip past quote enclosed regions. */ | |
2646 | do | |
2647 | { | |
2648 | switch (*p) | |
2649 | { | |
2650 | case '\n': | |
2651 | case 0: | |
2652 | done = 1; | |
2653 | break; | |
2654 | ||
2655 | case '"': | |
2656 | in_double_quote = ! in_double_quote; | |
2657 | break; | |
2658 | ||
2659 | case '\'': | |
2660 | in_single_quote = ! in_single_quote; | |
2661 | break; | |
2662 | ||
2663 | case '?': | |
2664 | if (in_double_quote || in_single_quote) | |
2665 | break; | |
2666 | ||
2667 | if (p[1] == ':') | |
2668 | *p = '1'; | |
2669 | else if (p[1] == '+') | |
2670 | { | |
2671 | p[0] = '1'; | |
2672 | p[1] = 'f'; | |
2673 | } | |
2674 | else if (p[1] == '-') | |
2675 | { | |
2676 | p[0] = '1'; | |
2677 | p[1] = 'b'; | |
2678 | } | |
2679 | break; | |
2680 | ||
2681 | default: | |
2682 | break; | |
2683 | } | |
2684 | ||
2685 | p ++; | |
2686 | } | |
2687 | while (! done); | |
2688 | } |