Commit | Line | Data |
---|---|---|
c7927a3c | 1 | /* tc-rx.c -- Assembler for the Renesas RX |
f0c00282 | 2 | Copyright 2008-2013 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" | |
23 | #include "obstack.h" | |
24 | #include "safe-ctype.h" | |
25 | #include "dwarf2dbg.h" | |
26 | #include "libbfd.h" | |
27 | #include "elf/common.h" | |
28 | #include "elf/rx.h" | |
29 | #include "rx-defs.h" | |
30 | #include "filenames.h" | |
31 | #include "listing.h" | |
32 | #include "sb.h" | |
33 | #include "macro.h" | |
34 | ||
35 | #define RX_OPCODE_BIG_ENDIAN 0 | |
36 | ||
37 | const char comment_chars[] = ";"; | |
38 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
39 | first line of the input file. This is because the compiler outputs | |
40 | #NO_APP at the beginning of its output. */ | |
41 | const char line_comment_chars[] = "#"; | |
42 | const char line_separator_chars[] = "!"; | |
43 | ||
44 | const char EXP_CHARS[] = "eE"; | |
45 | const char FLT_CHARS[] = "dD"; | |
46 | \f | |
47 | /* ELF flags to set in the output file header. */ | |
708e2187 | 48 | static int elf_flags = E_FLAG_RX_ABI; |
c7927a3c NC |
49 | |
50 | bfd_boolean rx_use_conventional_section_names = FALSE; | |
51 | static bfd_boolean rx_use_small_data_limit = FALSE; | |
52 | ||
d4cb0ea0 NC |
53 | static bfd_boolean rx_pid_mode = FALSE; |
54 | static int rx_num_int_regs = 0; | |
55 | int rx_pid_register; | |
56 | int rx_gp_register; | |
57 | ||
f0c00282 NC |
58 | enum rx_cpu_types rx_cpu = RX600; |
59 | ||
0e25bcb4 DD |
60 | static void rx_fetchalign (int ignore ATTRIBUTE_UNUSED); |
61 | ||
c7927a3c NC |
62 | enum options |
63 | { | |
64 | OPTION_BIG = OPTION_MD_BASE, | |
65 | OPTION_LITTLE, | |
66 | OPTION_32BIT_DOUBLES, | |
67 | OPTION_64BIT_DOUBLES, | |
68 | OPTION_CONVENTIONAL_SECTION_NAMES, | |
69 | OPTION_RENESAS_SECTION_NAMES, | |
70 | OPTION_SMALL_DATA_LIMIT, | |
d4cb0ea0 NC |
71 | OPTION_RELAX, |
72 | OPTION_PID, | |
73 | OPTION_INT_REGS, | |
708e2187 NC |
74 | OPTION_USES_GCC_ABI, |
75 | OPTION_USES_RX_ABI, | |
f0c00282 | 76 | OPTION_CPU, |
c7927a3c NC |
77 | }; |
78 | ||
79 | #define RX_SHORTOPTS "" | |
80 | const char * md_shortopts = RX_SHORTOPTS; | |
81 | ||
82 | /* Assembler options. */ | |
83 | struct option md_longopts[] = | |
84 | { | |
85 | {"mbig-endian-data", no_argument, NULL, OPTION_BIG}, | |
86 | {"mlittle-endian-data", no_argument, NULL, OPTION_LITTLE}, | |
87 | /* The next two switches are here because the | |
88 | generic parts of the linker testsuite uses them. */ | |
89 | {"EB", no_argument, NULL, OPTION_BIG}, | |
90 | {"EL", no_argument, NULL, OPTION_LITTLE}, | |
91 | {"m32bit-doubles", no_argument, NULL, OPTION_32BIT_DOUBLES}, | |
92 | {"m64bit-doubles", no_argument, NULL, OPTION_64BIT_DOUBLES}, | |
93 | /* This option is here mainly for the binutils testsuites, | |
94 | as many of their tests assume conventional section naming. */ | |
95 | {"muse-conventional-section-names", no_argument, NULL, OPTION_CONVENTIONAL_SECTION_NAMES}, | |
96 | {"muse-renesas-section-names", no_argument, NULL, OPTION_RENESAS_SECTION_NAMES}, | |
97 | {"msmall-data-limit", no_argument, NULL, OPTION_SMALL_DATA_LIMIT}, | |
98 | {"relax", no_argument, NULL, OPTION_RELAX}, | |
d4cb0ea0 NC |
99 | {"mpid", no_argument, NULL, OPTION_PID}, |
100 | {"mint-register", required_argument, NULL, OPTION_INT_REGS}, | |
708e2187 NC |
101 | {"mgcc-abi", no_argument, NULL, OPTION_USES_GCC_ABI}, |
102 | {"mrx-abi", no_argument, NULL, OPTION_USES_RX_ABI}, | |
f0c00282 | 103 | {"mcpu",required_argument,NULL,OPTION_CPU}, |
c7927a3c NC |
104 | {NULL, no_argument, NULL, 0} |
105 | }; | |
106 | size_t md_longopts_size = sizeof (md_longopts); | |
107 | ||
108 | int | |
109 | md_parse_option (int c ATTRIBUTE_UNUSED, char * arg ATTRIBUTE_UNUSED) | |
110 | { | |
111 | switch (c) | |
112 | { | |
113 | case OPTION_BIG: | |
114 | target_big_endian = 1; | |
115 | return 1; | |
116 | ||
117 | case OPTION_LITTLE: | |
118 | target_big_endian = 0; | |
119 | return 1; | |
120 | ||
121 | case OPTION_32BIT_DOUBLES: | |
122 | elf_flags &= ~ E_FLAG_RX_64BIT_DOUBLES; | |
123 | return 1; | |
124 | ||
125 | case OPTION_64BIT_DOUBLES: | |
126 | elf_flags |= E_FLAG_RX_64BIT_DOUBLES; | |
127 | return 1; | |
128 | ||
129 | case OPTION_CONVENTIONAL_SECTION_NAMES: | |
130 | rx_use_conventional_section_names = TRUE; | |
131 | return 1; | |
132 | ||
133 | case OPTION_RENESAS_SECTION_NAMES: | |
134 | rx_use_conventional_section_names = FALSE; | |
135 | return 1; | |
136 | ||
137 | case OPTION_SMALL_DATA_LIMIT: | |
138 | rx_use_small_data_limit = TRUE; | |
139 | return 1; | |
140 | ||
141 | case OPTION_RELAX: | |
142 | linkrelax = 1; | |
143 | return 1; | |
d4cb0ea0 NC |
144 | |
145 | case OPTION_PID: | |
146 | rx_pid_mode = TRUE; | |
147 | elf_flags |= E_FLAG_RX_PID; | |
148 | return 1; | |
149 | ||
150 | case OPTION_INT_REGS: | |
151 | rx_num_int_regs = atoi (optarg); | |
152 | return 1; | |
708e2187 NC |
153 | |
154 | case OPTION_USES_GCC_ABI: | |
155 | elf_flags &= ~ E_FLAG_RX_ABI; | |
156 | return 1; | |
157 | ||
158 | case OPTION_USES_RX_ABI: | |
159 | elf_flags |= E_FLAG_RX_ABI; | |
160 | return 1; | |
f0c00282 NC |
161 | |
162 | case OPTION_CPU: | |
163 | if (strcasecmp (arg, "rx100") == 0) | |
164 | rx_cpu = RX100; | |
165 | else if (strcasecmp (arg, "rx200") == 0) | |
166 | rx_cpu = RX200; | |
167 | else if (strcasecmp (arg, "rx600") == 0) | |
168 | rx_cpu = RX600; | |
169 | else if (strcasecmp (arg, "rx610") == 0) | |
170 | rx_cpu = RX610; | |
171 | else | |
172 | { | |
173 | as_warn (_("unrecognised RX CPU type %s"), arg); | |
174 | break; | |
175 | } | |
176 | return 1; | |
c7927a3c NC |
177 | } |
178 | return 0; | |
179 | } | |
180 | ||
181 | void | |
182 | md_show_usage (FILE * stream) | |
183 | { | |
184 | fprintf (stream, _(" RX specific command line options:\n")); | |
185 | fprintf (stream, _(" --mbig-endian-data\n")); | |
186 | fprintf (stream, _(" --mlittle-endian-data [default]\n")); | |
187 | fprintf (stream, _(" --m32bit-doubles [default]\n")); | |
188 | fprintf (stream, _(" --m64bit-doubles\n")); | |
189 | fprintf (stream, _(" --muse-conventional-section-names\n")); | |
190 | fprintf (stream, _(" --muse-renesas-section-names [default]\n")); | |
191 | fprintf (stream, _(" --msmall-data-limit\n")); | |
d4cb0ea0 NC |
192 | fprintf (stream, _(" --mrelax\n")); |
193 | fprintf (stream, _(" --mpid\n")); | |
194 | fprintf (stream, _(" --mint-register=<value>\n")); | |
f0c00282 | 195 | fprintf (stream, _(" --mcpu=<rx100|rx200|rx600|rx610>\n")); |
c7927a3c NC |
196 | } |
197 | ||
198 | static void | |
199 | s_bss (int ignore ATTRIBUTE_UNUSED) | |
200 | { | |
201 | int temp; | |
202 | ||
203 | temp = get_absolute_expression (); | |
204 | subseg_set (bss_section, (subsegT) temp); | |
205 | demand_empty_rest_of_line (); | |
206 | } | |
207 | ||
208 | static void | |
209 | rx_float_cons (int ignore ATTRIBUTE_UNUSED) | |
210 | { | |
211 | if (elf_flags & E_FLAG_RX_64BIT_DOUBLES) | |
212 | return float_cons ('d'); | |
213 | return float_cons ('f'); | |
214 | } | |
215 | ||
216 | static char * | |
217 | rx_strcasestr (const char *string, const char *sub) | |
218 | { | |
219 | int subl; | |
220 | int strl; | |
221 | ||
222 | if (!sub || !sub[0]) | |
223 | return (char *)string; | |
224 | ||
225 | subl = strlen (sub); | |
226 | strl = strlen (string); | |
227 | ||
228 | while (strl >= subl) | |
229 | { | |
230 | /* strncasecmp is in libiberty. */ | |
231 | if (strncasecmp (string, sub, subl) == 0) | |
232 | return (char *)string; | |
233 | ||
234 | string ++; | |
235 | strl --; | |
236 | } | |
237 | return NULL; | |
238 | } | |
239 | ||
240 | static void | |
241 | rx_include (int ignore) | |
242 | { | |
243 | FILE * try; | |
244 | char * path; | |
245 | char * filename; | |
246 | char * current_filename; | |
247 | char * eof; | |
248 | char * p; | |
249 | char * d; | |
250 | char * f; | |
251 | char end_char; | |
252 | size_t len; | |
253 | ||
254 | /* The RX version of the .INCLUDE pseudo-op does not | |
255 | have to have the filename inside double quotes. */ | |
256 | SKIP_WHITESPACE (); | |
257 | if (*input_line_pointer == '"') | |
258 | { | |
259 | /* Treat as the normal GAS .include pseudo-op. */ | |
260 | s_include (ignore); | |
261 | return; | |
262 | } | |
263 | ||
264 | /* Get the filename. Spaces are allowed, NUL characters are not. */ | |
265 | filename = input_line_pointer; | |
266 | eof = find_end_of_line (filename, FALSE); | |
267 | input_line_pointer = eof; | |
268 | ||
269 | while (eof >= filename && (* eof == ' ' || * eof == '\n')) | |
270 | -- eof; | |
271 | end_char = *(++ eof); | |
272 | * eof = 0; | |
273 | if (eof == filename) | |
274 | { | |
275 | as_bad (_("no filename following .INCLUDE pseudo-op")); | |
276 | * eof = end_char; | |
277 | return; | |
278 | } | |
279 | ||
280 | as_where (& current_filename, NULL); | |
281 | f = (char *) xmalloc (strlen (current_filename) + strlen (filename) + 1); | |
282 | ||
283 | /* Check the filename. If [@]..FILE[@] is found then replace | |
284 | this with the current assembler source filename, stripped | |
285 | of any directory prefixes or extensions. */ | |
286 | if ((p = rx_strcasestr (filename, "..file")) != NULL) | |
287 | { | |
288 | char * c; | |
289 | ||
290 | len = 6; /* strlen ("..file"); */ | |
291 | ||
292 | if (p > filename && p[-1] == '@') | |
293 | -- p, ++len; | |
294 | ||
295 | if (p[len] == '@') | |
296 | len ++; | |
297 | ||
298 | for (d = c = current_filename; *c; c++) | |
299 | if (IS_DIR_SEPARATOR (* c)) | |
300 | d = c + 1; | |
301 | for (c = d; *c; c++) | |
302 | if (*c == '.') | |
303 | break; | |
304 | ||
305 | sprintf (f, "%.*s%.*s%.*s", (int) (p - filename), filename, | |
306 | (int) (c - d), d, | |
307 | (int) (strlen (filename) - ((p + len) - filename)), | |
308 | p + len); | |
309 | } | |
310 | else | |
311 | strcpy (f, filename); | |
312 | ||
313 | /* RX .INCLUDE semantics say that 'filename' is located by: | |
314 | ||
315 | 1. If filename is absolute, just try that. Otherwise... | |
316 | ||
317 | 2. If the current source file includes a directory component | |
318 | then prepend that to the filename and try. Otherwise... | |
319 | ||
320 | 3. Try any directories specified by the -I command line | |
321 | option(s). | |
322 | ||
323 | 4 .Try a directory specifed by the INC100 environment variable. */ | |
324 | ||
325 | if (IS_ABSOLUTE_PATH (f)) | |
326 | try = fopen (path = f, FOPEN_RT); | |
327 | else | |
328 | { | |
329 | char * env = getenv ("INC100"); | |
330 | ||
331 | try = NULL; | |
332 | ||
333 | len = strlen (current_filename); | |
334 | if ((size_t) include_dir_maxlen > len) | |
335 | len = include_dir_maxlen; | |
336 | if (env && strlen (env) > len) | |
337 | len = strlen (env); | |
338 | ||
339 | path = (char *) xmalloc (strlen (f) + len + 5); | |
340 | ||
341 | if (current_filename != NULL) | |
342 | { | |
343 | for (d = NULL, p = current_filename; *p; p++) | |
344 | if (IS_DIR_SEPARATOR (* p)) | |
345 | d = p; | |
346 | ||
347 | if (d != NULL) | |
348 | { | |
349 | sprintf (path, "%.*s/%s", (int) (d - current_filename), current_filename, | |
350 | f); | |
351 | try = fopen (path, FOPEN_RT); | |
352 | } | |
353 | } | |
354 | ||
355 | if (try == NULL) | |
356 | { | |
357 | int i; | |
358 | ||
359 | for (i = 0; i < include_dir_count; i++) | |
360 | { | |
361 | sprintf (path, "%s/%s", include_dirs[i], f); | |
362 | if ((try = fopen (path, FOPEN_RT)) != NULL) | |
363 | break; | |
364 | } | |
365 | } | |
366 | ||
367 | if (try == NULL && env != NULL) | |
368 | { | |
369 | sprintf (path, "%s/%s", env, f); | |
370 | try = fopen (path, FOPEN_RT); | |
371 | } | |
372 | ||
373 | free (f); | |
374 | } | |
375 | ||
376 | if (try == NULL) | |
377 | { | |
378 | as_bad (_("unable to locate include file: %s"), filename); | |
379 | free (path); | |
380 | } | |
381 | else | |
382 | { | |
383 | fclose (try); | |
384 | register_dependency (path); | |
385 | input_scrub_insert_file (path); | |
386 | } | |
387 | ||
388 | * eof = end_char; | |
389 | } | |
390 | ||
391 | static void | |
392 | parse_rx_section (char * name) | |
393 | { | |
394 | asection * sec; | |
395 | int type; | |
396 | int attr = SHF_ALLOC | SHF_EXECINSTR; | |
397 | int align = 2; | |
398 | char end_char; | |
399 | ||
400 | do | |
401 | { | |
402 | char * p; | |
403 | ||
404 | SKIP_WHITESPACE (); | |
405 | for (p = input_line_pointer; *p && strchr ("\n\t, =", *p) == NULL; p++) | |
406 | ; | |
407 | end_char = *p; | |
408 | *p = 0; | |
409 | ||
410 | if (strcasecmp (input_line_pointer, "ALIGN") == 0) | |
411 | { | |
412 | *p = end_char; | |
413 | ||
414 | if (end_char == ' ') | |
415 | while (ISSPACE (*p)) | |
416 | p++; | |
417 | ||
418 | if (*p == '=') | |
419 | { | |
420 | ++ p; | |
421 | while (ISSPACE (*p)) | |
422 | p++; | |
423 | switch (*p) | |
424 | { | |
425 | case '2': align = 2; break; | |
426 | case '4': align = 4; break; | |
427 | case '8': align = 8; break; | |
428 | default: | |
429 | as_bad (_("unrecognised alignment value in .SECTION directive: %s"), p); | |
430 | ignore_rest_of_line (); | |
431 | return; | |
432 | } | |
433 | ++ p; | |
434 | } | |
435 | ||
436 | end_char = *p; | |
437 | } | |
438 | else if (strcasecmp (input_line_pointer, "CODE") == 0) | |
439 | attr = SHF_ALLOC | SHF_EXECINSTR; | |
440 | else if (strcasecmp (input_line_pointer, "DATA") == 0) | |
441 | attr = SHF_ALLOC | SHF_WRITE; | |
442 | else if (strcasecmp (input_line_pointer, "ROMDATA") == 0) | |
443 | attr = SHF_ALLOC; | |
444 | else | |
445 | { | |
446 | as_bad (_("unknown parameter following .SECTION directive: %s"), | |
447 | input_line_pointer); | |
448 | ||
449 | *p = end_char; | |
450 | input_line_pointer = p + 1; | |
451 | ignore_rest_of_line (); | |
452 | return; | |
453 | } | |
454 | ||
455 | *p = end_char; | |
456 | input_line_pointer = p + 1; | |
457 | } | |
458 | while (end_char != '\n' && end_char != 0); | |
459 | ||
460 | if ((sec = bfd_get_section_by_name (stdoutput, name)) == NULL) | |
461 | { | |
462 | if (strcmp (name, "B") && strcmp (name, "B_1") && strcmp (name, "B_2")) | |
463 | type = SHT_NULL; | |
464 | else | |
465 | type = SHT_NOBITS; | |
466 | ||
467 | obj_elf_change_section (name, type, attr, 0, NULL, FALSE, FALSE); | |
468 | } | |
469 | else /* Try not to redefine a section, especially B_1. */ | |
470 | { | |
471 | int flags = sec->flags; | |
472 | ||
473 | type = elf_section_type (sec); | |
474 | ||
475 | attr = ((flags & SEC_READONLY) ? 0 : SHF_WRITE) | |
476 | | ((flags & SEC_ALLOC) ? SHF_ALLOC : 0) | |
477 | | ((flags & SEC_CODE) ? SHF_EXECINSTR : 0) | |
478 | | ((flags & SEC_MERGE) ? SHF_MERGE : 0) | |
479 | | ((flags & SEC_STRINGS) ? SHF_STRINGS : 0) | |
480 | | ((flags & SEC_THREAD_LOCAL) ? SHF_TLS : 0); | |
481 | ||
482 | obj_elf_change_section (name, type, attr, 0, NULL, FALSE, FALSE); | |
483 | } | |
484 | ||
485 | bfd_set_section_alignment (stdoutput, now_seg, align); | |
486 | } | |
487 | ||
488 | static void | |
489 | rx_section (int ignore) | |
490 | { | |
491 | char * p; | |
492 | ||
493 | /* The as100 assembler supports a different syntax for the .section | |
494 | pseudo-op. So check for it and handle it here if necessary. */ | |
495 | SKIP_WHITESPACE (); | |
496 | ||
497 | /* Peek past the section name to see if arguments follow. */ | |
498 | for (p = input_line_pointer; *p; p++) | |
499 | if (*p == ',' || *p == '\n') | |
500 | break; | |
501 | ||
502 | if (*p == ',') | |
503 | { | |
504 | int len = p - input_line_pointer; | |
505 | ||
506 | while (ISSPACE (*++p)) | |
507 | ; | |
508 | ||
509 | if (*p != '"' && *p != '#') | |
510 | { | |
511 | char * name = (char *) xmalloc (len + 1); | |
512 | ||
513 | strncpy (name, input_line_pointer, len); | |
514 | name[len] = 0; | |
515 | ||
516 | input_line_pointer = p; | |
517 | parse_rx_section (name); | |
518 | return; | |
519 | } | |
520 | } | |
521 | ||
522 | obj_elf_section (ignore); | |
523 | } | |
524 | ||
525 | static void | |
526 | rx_list (int ignore ATTRIBUTE_UNUSED) | |
527 | { | |
528 | SKIP_WHITESPACE (); | |
529 | ||
530 | if (strncasecmp (input_line_pointer, "OFF", 3)) | |
531 | listing_list (0); | |
532 | else if (strncasecmp (input_line_pointer, "ON", 2)) | |
533 | listing_list (1); | |
534 | else | |
535 | as_warn (_("expecting either ON or OFF after .list")); | |
536 | } | |
537 | ||
538 | /* Like the .rept pseudo op, but supports the | |
539 | use of ..MACREP inside the repeated region. */ | |
540 | ||
541 | static void | |
542 | rx_rept (int ignore ATTRIBUTE_UNUSED) | |
543 | { | |
544 | int count = get_absolute_expression (); | |
545 | ||
546 | do_repeat_with_expander (count, "MREPEAT", "ENDR", "..MACREP"); | |
547 | } | |
548 | ||
549 | /* Like cons() accept that strings are allowed. */ | |
550 | ||
551 | static void | |
552 | rx_cons (int size) | |
553 | { | |
554 | SKIP_WHITESPACE (); | |
555 | ||
556 | if (* input_line_pointer == '"') | |
557 | stringer (8+0); | |
558 | else | |
559 | cons (size); | |
560 | } | |
561 | ||
562 | static void | |
563 | rx_nop (int ignore ATTRIBUTE_UNUSED) | |
564 | { | |
565 | ignore_rest_of_line (); | |
566 | } | |
567 | ||
568 | static void | |
569 | rx_unimp (int idx) | |
570 | { | |
571 | as_warn (_("The \".%s\" pseudo-op is not implemented\n"), | |
572 | md_pseudo_table[idx].poc_name); | |
573 | ignore_rest_of_line (); | |
574 | } | |
575 | ||
576 | /* The target specific pseudo-ops which we support. */ | |
577 | const pseudo_typeS md_pseudo_table[] = | |
578 | { | |
579 | /* These are unimplemented. They're listed first so that we can use | |
580 | the poc_value as the index into this array, to get the name of | |
581 | the pseudo. So, keep these (1) first, and (2) in order, with (3) | |
582 | the poc_value's in sequence. */ | |
583 | { "btglb", rx_unimp, 0 }, | |
584 | { "call", rx_unimp, 1 }, | |
585 | { "einsf", rx_unimp, 2 }, | |
586 | { "fb", rx_unimp, 3 }, | |
587 | { "fbsym", rx_unimp, 4 }, | |
588 | { "id", rx_unimp, 5 }, | |
589 | { "initsct", rx_unimp, 6 }, | |
590 | { "insf", rx_unimp, 7 }, | |
591 | { "instr", rx_unimp, 8 }, | |
592 | { "lbba", rx_unimp, 9 }, | |
593 | { "len", rx_unimp, 10 }, | |
594 | { "optj", rx_unimp, 11 }, | |
595 | { "rvector", rx_unimp, 12 }, | |
596 | { "sb", rx_unimp, 13 }, | |
597 | { "sbbit", rx_unimp, 14 }, | |
598 | { "sbsym", rx_unimp, 15 }, | |
599 | { "sbsym16", rx_unimp, 16 }, | |
600 | ||
601 | /* These are the do-nothing pseudos. */ | |
602 | { "stk", rx_nop, 0 }, | |
603 | /* The manual documents ".stk" but the compiler emits ".stack". */ | |
604 | { "stack", rx_nop, 0 }, | |
605 | ||
a22429b9 | 606 | /* These are Renesas as100 assembler pseudo-ops that we do support. */ |
c7927a3c NC |
607 | { "addr", rx_cons, 3 }, |
608 | { "align", s_align_bytes, 2 }, | |
609 | { "byte", rx_cons, 1 }, | |
610 | { "fixed", float_cons, 'f' }, | |
611 | { "form", listing_psize, 0 }, | |
612 | { "glb", s_globl, 0 }, | |
613 | { "include", rx_include, 0 }, | |
614 | { "list", rx_list, 0 }, | |
615 | { "lword", rx_cons, 4 }, | |
616 | { "mrepeat", rx_rept, 0 }, | |
617 | { "section", rx_section, 0 }, | |
618 | ||
619 | /* FIXME: The following pseudo-ops place their values (and associated | |
620 | label if present) in the data section, regardless of whatever | |
621 | section we are currently in. At the moment this code does not | |
622 | implement that part of the semantics. */ | |
623 | { "blka", s_space, 3 }, | |
624 | { "blkb", s_space, 1 }, | |
625 | { "blkd", s_space, 8 }, | |
626 | { "blkf", s_space, 4 }, | |
627 | { "blkl", s_space, 4 }, | |
628 | { "blkw", s_space, 2 }, | |
629 | ||
630 | /* Our "standard" pseudos. */ | |
631 | { "double", rx_float_cons, 0 }, | |
632 | { "bss", s_bss, 0 }, | |
633 | { "3byte", cons, 3 }, | |
634 | { "int", cons, 4 }, | |
635 | { "word", cons, 4 }, | |
636 | ||
0e25bcb4 DD |
637 | { "fetchalign", rx_fetchalign, 0 }, |
638 | ||
c7927a3c NC |
639 | /* End of list marker. */ |
640 | { NULL, NULL, 0 } | |
641 | }; | |
642 | ||
643 | static asymbol * gp_symbol; | |
d4cb0ea0 NC |
644 | static asymbol * rx_pid_symbol; |
645 | ||
646 | static symbolS * rx_pidreg_symbol; | |
647 | static symbolS * rx_gpreg_symbol; | |
c7927a3c NC |
648 | |
649 | void | |
650 | md_begin (void) | |
651 | { | |
d4cb0ea0 NC |
652 | /* Make the __gp and __pid_base symbols now rather |
653 | than after the symbol table is frozen. We only do this | |
654 | when supporting small data limits because otherwise we | |
655 | pollute the symbol table. */ | |
656 | ||
657 | /* The meta-registers %pidreg and %gpreg depend on what other | |
658 | options are specified. The __rx_*_defined symbols exist so we | |
659 | can .ifdef asm code based on what options were passed to gas, | |
660 | without needing a preprocessor */ | |
661 | ||
662 | if (rx_pid_mode) | |
663 | { | |
664 | rx_pid_register = 13 - rx_num_int_regs; | |
665 | rx_pid_symbol = symbol_get_bfdsym (symbol_find_or_make ("__pid_base")); | |
666 | rx_pidreg_symbol = symbol_find_or_make ("__rx_pidreg_defined"); | |
667 | S_SET_VALUE (rx_pidreg_symbol, rx_pid_register); | |
668 | S_SET_SEGMENT (rx_pidreg_symbol, absolute_section); | |
669 | } | |
670 | ||
c7927a3c | 671 | if (rx_use_small_data_limit) |
d4cb0ea0 NC |
672 | { |
673 | if (rx_pid_mode) | |
674 | rx_gp_register = rx_pid_register - 1; | |
675 | else | |
676 | rx_gp_register = 13 - rx_num_int_regs; | |
677 | gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp")); | |
678 | rx_gpreg_symbol = symbol_find_or_make ("__rx_gpreg_defined"); | |
679 | S_SET_VALUE (rx_gpreg_symbol, rx_gp_register); | |
680 | S_SET_SEGMENT (rx_gpreg_symbol, absolute_section); | |
681 | } | |
c7927a3c NC |
682 | } |
683 | ||
684 | char * rx_lex_start; | |
685 | char * rx_lex_end; | |
686 | ||
0e25bcb4 DD |
687 | /* These negative numbers are found in rx_bytesT.n_base for non-opcode |
688 | md_frags */ | |
689 | #define RX_NBASE_FETCHALIGN -1 | |
690 | ||
c7927a3c NC |
691 | typedef struct rx_bytesT |
692 | { | |
693 | char base[4]; | |
0e25bcb4 | 694 | /* If this is negative, it's a special-purpose frag as per the defines above. */ |
c7927a3c NC |
695 | int n_base; |
696 | char ops[8]; | |
697 | int n_ops; | |
698 | struct | |
699 | { | |
700 | expressionS exp; | |
701 | char offset; | |
702 | char nbits; | |
703 | char type; /* RXREL_*. */ | |
704 | int reloc; | |
705 | fixS * fixP; | |
706 | } fixups[2]; | |
707 | int n_fixups; | |
708 | struct | |
709 | { | |
710 | char type; | |
711 | char field_pos; | |
712 | char val_ofs; | |
713 | } relax[2]; | |
714 | int n_relax; | |
715 | int link_relax; | |
716 | fixS *link_relax_fixP; | |
44a808b1 DD |
717 | char times_grown; |
718 | char times_shrank; | |
c7927a3c NC |
719 | } rx_bytesT; |
720 | ||
721 | static rx_bytesT rx_bytes; | |
0e25bcb4 DD |
722 | /* We set n_ops to be "size of next opcode" if the next opcode doesn't relax. */ |
723 | static rx_bytesT *fetchalign_bytes = NULL; | |
724 | ||
725 | static void | |
726 | rx_fetchalign (int ignore ATTRIBUTE_UNUSED) | |
727 | { | |
728 | char * bytes; | |
729 | fragS * frag_then; | |
730 | ||
731 | memset (& rx_bytes, 0, sizeof (rx_bytes)); | |
732 | rx_bytes.n_base = RX_NBASE_FETCHALIGN; | |
733 | ||
734 | bytes = frag_more (8); | |
735 | frag_then = frag_now; | |
736 | frag_variant (rs_machine_dependent, | |
737 | 0 /* max_chars */, | |
738 | 0 /* var */, | |
739 | 0 /* subtype */, | |
740 | 0 /* symbol */, | |
741 | 0 /* offset */, | |
742 | 0 /* opcode */); | |
743 | frag_then->fr_opcode = bytes; | |
744 | frag_then->fr_subtype = 0; | |
745 | fetchalign_bytes = frag_then->tc_frag_data; | |
746 | } | |
c7927a3c NC |
747 | |
748 | void | |
749 | rx_relax (int type, int pos) | |
750 | { | |
751 | rx_bytes.relax[rx_bytes.n_relax].type = type; | |
752 | rx_bytes.relax[rx_bytes.n_relax].field_pos = pos; | |
753 | rx_bytes.relax[rx_bytes.n_relax].val_ofs = rx_bytes.n_base + rx_bytes.n_ops; | |
754 | rx_bytes.n_relax ++; | |
755 | } | |
756 | ||
757 | void | |
758 | rx_linkrelax_dsp (int pos) | |
759 | { | |
760 | switch (pos) | |
761 | { | |
762 | case 4: | |
763 | rx_bytes.link_relax |= RX_RELAXA_DSP4; | |
764 | break; | |
765 | case 6: | |
766 | rx_bytes.link_relax |= RX_RELAXA_DSP6; | |
767 | break; | |
768 | case 14: | |
769 | rx_bytes.link_relax |= RX_RELAXA_DSP14; | |
770 | break; | |
771 | } | |
772 | } | |
773 | ||
774 | void | |
775 | rx_linkrelax_imm (int pos) | |
776 | { | |
777 | switch (pos) | |
778 | { | |
779 | case 6: | |
780 | rx_bytes.link_relax |= RX_RELAXA_IMM6; | |
781 | break; | |
782 | case 12: | |
783 | rx_bytes.link_relax |= RX_RELAXA_IMM12; | |
784 | break; | |
785 | } | |
786 | } | |
787 | ||
788 | void | |
789 | rx_linkrelax_branch (void) | |
790 | { | |
791 | rx_bytes.link_relax |= RX_RELAXA_BRA; | |
792 | } | |
793 | ||
794 | static void | |
795 | rx_fixup (expressionS exp, int offsetbits, int nbits, int type) | |
796 | { | |
797 | rx_bytes.fixups[rx_bytes.n_fixups].exp = exp; | |
798 | rx_bytes.fixups[rx_bytes.n_fixups].offset = offsetbits; | |
799 | rx_bytes.fixups[rx_bytes.n_fixups].nbits = nbits; | |
800 | rx_bytes.fixups[rx_bytes.n_fixups].type = type; | |
801 | rx_bytes.fixups[rx_bytes.n_fixups].reloc = exp.X_md; | |
802 | rx_bytes.n_fixups ++; | |
803 | } | |
804 | ||
805 | #define rx_field_fixup(exp, offset, nbits, type) \ | |
806 | rx_fixup (exp, offset, nbits, type) | |
807 | ||
808 | #define rx_op_fixup(exp, offset, nbits, type) \ | |
809 | rx_fixup (exp, offset + 8 * rx_bytes.n_base, nbits, type) | |
810 | ||
811 | void | |
812 | rx_base1 (int b1) | |
813 | { | |
814 | rx_bytes.base[0] = b1; | |
815 | rx_bytes.n_base = 1; | |
816 | } | |
817 | ||
818 | void | |
819 | rx_base2 (int b1, int b2) | |
820 | { | |
821 | rx_bytes.base[0] = b1; | |
822 | rx_bytes.base[1] = b2; | |
823 | rx_bytes.n_base = 2; | |
824 | } | |
825 | ||
826 | void | |
827 | rx_base3 (int b1, int b2, int b3) | |
828 | { | |
829 | rx_bytes.base[0] = b1; | |
830 | rx_bytes.base[1] = b2; | |
831 | rx_bytes.base[2] = b3; | |
832 | rx_bytes.n_base = 3; | |
833 | } | |
834 | ||
835 | void | |
836 | rx_base4 (int b1, int b2, int b3, int b4) | |
837 | { | |
838 | rx_bytes.base[0] = b1; | |
839 | rx_bytes.base[1] = b2; | |
840 | rx_bytes.base[2] = b3; | |
841 | rx_bytes.base[3] = b4; | |
842 | rx_bytes.n_base = 4; | |
843 | } | |
844 | ||
845 | /* This gets complicated when the field spans bytes, because fields | |
846 | are numbered from the MSB of the first byte as zero, and bits are | |
847 | stored LSB towards the LSB of the byte. Thus, a simple four-bit | |
848 | insertion of 12 at position 4 of 0x00 yields: 0x0b. A three-bit | |
849 | insertion of b'MXL at position 7 is like this: | |
850 | ||
851 | - - - - - - - - - - - - - - - - | |
852 | M X L */ | |
853 | ||
854 | void | |
855 | rx_field (int val, int pos, int sz) | |
856 | { | |
857 | int valm; | |
858 | int bytep, bitp; | |
859 | ||
860 | if (sz > 0) | |
861 | { | |
862 | if (val < 0 || val >= (1 << sz)) | |
863 | as_bad (_("Value %d doesn't fit in unsigned %d-bit field"), val, sz); | |
864 | } | |
865 | else | |
866 | { | |
867 | sz = - sz; | |
868 | if (val < -(1 << (sz - 1)) || val >= (1 << (sz - 1))) | |
869 | as_bad (_("Value %d doesn't fit in signed %d-bit field"), val, sz); | |
870 | } | |
871 | ||
872 | /* This code points at 'M' in the above example. */ | |
873 | bytep = pos / 8; | |
874 | bitp = pos % 8; | |
875 | ||
876 | while (bitp + sz > 8) | |
877 | { | |
878 | int ssz = 8 - bitp; | |
879 | int svalm; | |
880 | ||
881 | svalm = val >> (sz - ssz); | |
882 | svalm = svalm & ((1 << ssz) - 1); | |
883 | svalm = svalm << (8 - bitp - ssz); | |
884 | gas_assert (bytep < rx_bytes.n_base); | |
885 | rx_bytes.base[bytep] |= svalm; | |
886 | ||
887 | bitp = 0; | |
888 | sz -= ssz; | |
889 | bytep ++; | |
890 | } | |
891 | valm = val & ((1 << sz) - 1); | |
892 | valm = valm << (8 - bitp - sz); | |
893 | gas_assert (bytep < rx_bytes.n_base); | |
894 | rx_bytes.base[bytep] |= valm; | |
895 | } | |
896 | ||
897 | /* Special case of the above, for 3-bit displacements of 2..9. */ | |
898 | ||
899 | void | |
900 | rx_disp3 (expressionS exp, int pos) | |
901 | { | |
902 | rx_field_fixup (exp, pos, 3, RXREL_PCREL); | |
903 | } | |
904 | ||
905 | /* Special case of the above, for split 5-bit displacements. Assumes | |
906 | the displacement has been checked with rx_disp5op. */ | |
907 | /* ---- -432 1--- 0--- */ | |
908 | ||
909 | void | |
910 | rx_field5s (expressionS exp) | |
911 | { | |
912 | int val; | |
913 | ||
914 | val = exp.X_add_number; | |
915 | rx_bytes.base[0] |= val >> 2; | |
916 | rx_bytes.base[1] |= (val << 6) & 0x80; | |
917 | rx_bytes.base[1] |= (val << 3) & 0x08; | |
918 | } | |
919 | ||
920 | /* ---- ---- 4--- 3210 */ | |
921 | ||
922 | void | |
923 | rx_field5s2 (expressionS exp) | |
924 | { | |
925 | int val; | |
926 | ||
927 | val = exp.X_add_number; | |
928 | rx_bytes.base[1] |= (val << 3) & 0x80; | |
929 | rx_bytes.base[1] |= (val ) & 0x0f; | |
930 | } | |
931 | ||
932 | #define OP(x) rx_bytes.ops[rx_bytes.n_ops++] = (x) | |
933 | ||
934 | #define F_PRECISION 2 | |
935 | ||
936 | void | |
937 | rx_op (expressionS exp, int nbytes, int type) | |
938 | { | |
939 | int v = 0; | |
940 | ||
941 | if ((exp.X_op == O_constant || exp.X_op == O_big) | |
942 | && type != RXREL_PCREL) | |
943 | { | |
944 | if (exp.X_op == O_big && exp.X_add_number <= 0) | |
945 | { | |
946 | LITTLENUM_TYPE w[2]; | |
947 | char * ip = rx_bytes.ops + rx_bytes.n_ops; | |
948 | ||
949 | gen_to_words (w, F_PRECISION, 8); | |
950 | #if RX_OPCODE_BIG_ENDIAN | |
951 | ip[0] = w[0] >> 8; | |
952 | ip[1] = w[0]; | |
953 | ip[2] = w[1] >> 8; | |
954 | ip[3] = w[1]; | |
955 | #else | |
956 | ip[3] = w[0] >> 8; | |
957 | ip[2] = w[0]; | |
958 | ip[1] = w[1] >> 8; | |
959 | ip[0] = w[1]; | |
960 | #endif | |
961 | rx_bytes.n_ops += 4; | |
962 | } | |
963 | else | |
964 | { | |
965 | v = exp.X_add_number; | |
966 | while (nbytes) | |
967 | { | |
968 | #if RX_OPCODE_BIG_ENDIAN | |
969 | OP ((v >> (8 * (nbytes - 1))) & 0xff); | |
970 | #else | |
971 | OP (v & 0xff); | |
972 | v >>= 8; | |
973 | #endif | |
974 | nbytes --; | |
975 | } | |
976 | } | |
977 | } | |
978 | else | |
979 | { | |
980 | rx_op_fixup (exp, rx_bytes.n_ops * 8, nbytes * 8, type); | |
981 | memset (rx_bytes.ops + rx_bytes.n_ops, 0, nbytes); | |
982 | rx_bytes.n_ops += nbytes; | |
983 | } | |
984 | } | |
985 | ||
986 | int | |
987 | rx_wrap (void) | |
988 | { | |
989 | return 0; | |
990 | } | |
991 | ||
992 | #define APPEND(B, N_B) \ | |
993 | if (rx_bytes.N_B) \ | |
994 | { \ | |
995 | memcpy (bytes + idx, rx_bytes.B, rx_bytes.N_B); \ | |
996 | idx += rx_bytes.N_B; \ | |
997 | } | |
998 | ||
999 | void | |
1000 | rx_frag_init (fragS * fragP) | |
1001 | { | |
0e25bcb4 | 1002 | if (rx_bytes.n_relax || rx_bytes.link_relax || rx_bytes.n_base < 0) |
c7927a3c NC |
1003 | { |
1004 | fragP->tc_frag_data = malloc (sizeof (rx_bytesT)); | |
1005 | memcpy (fragP->tc_frag_data, & rx_bytes, sizeof (rx_bytesT)); | |
1006 | } | |
1007 | else | |
1008 | fragP->tc_frag_data = 0; | |
1009 | } | |
1010 | ||
1011 | /* Handle the as100's version of the .equ pseudo-op. It has the syntax: | |
1012 | <symbol_name> .equ <expression> */ | |
1013 | ||
1014 | static void | |
34ab8888 | 1015 | rx_equ (char * name, char * expression) |
c7927a3c NC |
1016 | { |
1017 | char saved_name_end_char; | |
1018 | char * name_end; | |
1019 | char * saved_ilp; | |
1020 | ||
1021 | while (ISSPACE (* name)) | |
1022 | name ++; | |
1023 | ||
1024 | for (name_end = name + 1; *name_end; name_end ++) | |
1025 | if (! ISALNUM (* name_end)) | |
1026 | break; | |
1027 | ||
1028 | saved_name_end_char = * name_end; | |
1029 | * name_end = 0; | |
1030 | ||
1031 | saved_ilp = input_line_pointer; | |
34ab8888 | 1032 | input_line_pointer = expression; |
c7927a3c NC |
1033 | |
1034 | equals (name, 1); | |
1035 | ||
1036 | input_line_pointer = saved_ilp; | |
1037 | * name_end = saved_name_end_char; | |
1038 | } | |
1039 | ||
1040 | /* Look for Renesas as100 pseudo-ops that occur after a symbol name | |
1041 | rather than at the start of a line. (eg .EQU or .DEFINE). If one | |
1042 | is found, process it and return TRUE otherwise return FALSE. */ | |
1043 | ||
1044 | static bfd_boolean | |
1045 | scan_for_infix_rx_pseudo_ops (char * str) | |
1046 | { | |
1047 | char * p; | |
1048 | char * pseudo_op; | |
1049 | char * dot = strchr (str, '.'); | |
1050 | ||
1051 | if (dot == NULL || dot == str) | |
1052 | return FALSE; | |
1053 | ||
1054 | /* A real pseudo-op must be preceeded by whitespace. */ | |
1055 | if (dot[-1] != ' ' && dot[-1] != '\t') | |
1056 | return FALSE; | |
1057 | ||
1058 | pseudo_op = dot + 1; | |
1059 | ||
1060 | if (!ISALNUM (* pseudo_op)) | |
1061 | return FALSE; | |
1062 | ||
1063 | for (p = pseudo_op + 1; ISALNUM (* p); p++) | |
1064 | ; | |
1065 | ||
1066 | if (strncasecmp ("EQU", pseudo_op, p - pseudo_op) == 0) | |
1067 | rx_equ (str, p); | |
1068 | else if (strncasecmp ("DEFINE", pseudo_op, p - pseudo_op) == 0) | |
1069 | as_warn (_("The .DEFINE pseudo-op is not implemented")); | |
1070 | else if (strncasecmp ("MACRO", pseudo_op, p - pseudo_op) == 0) | |
1071 | as_warn (_("The .MACRO pseudo-op is not implemented")); | |
1072 | else if (strncasecmp ("BTEQU", pseudo_op, p - pseudo_op) == 0) | |
1073 | as_warn (_("The .BTEQU pseudo-op is not implemented.")); | |
1074 | else | |
1075 | return FALSE; | |
1076 | ||
1077 | return TRUE; | |
1078 | } | |
1079 | ||
1080 | void | |
1081 | md_assemble (char * str) | |
1082 | { | |
1083 | char * bytes; | |
1084 | int idx = 0; | |
1085 | int i, rel; | |
1086 | fragS * frag_then = frag_now; | |
1087 | expressionS *exp; | |
1088 | ||
1089 | memset (& rx_bytes, 0, sizeof (rx_bytes)); | |
1090 | ||
1091 | rx_lex_init (str, str + strlen (str)); | |
1092 | if (scan_for_infix_rx_pseudo_ops (str)) | |
1093 | return; | |
1094 | rx_parse (); | |
1095 | ||
1096 | /* This simplifies the relaxation code. */ | |
1097 | if (rx_bytes.n_relax || rx_bytes.link_relax) | |
1098 | { | |
1099 | /* We do it this way because we want the frag to have the | |
1100 | rx_bytes in it, which we initialize above. */ | |
1101 | bytes = frag_more (12); | |
1102 | frag_then = frag_now; | |
1103 | frag_variant (rs_machine_dependent, | |
1104 | 0 /* max_chars */, | |
1105 | 0 /* var */, | |
1106 | 0 /* subtype */, | |
1107 | 0 /* symbol */, | |
1108 | 0 /* offset */, | |
1109 | 0 /* opcode */); | |
1110 | frag_then->fr_opcode = bytes; | |
1111 | frag_then->fr_fix += rx_bytes.n_base + rx_bytes.n_ops; | |
1112 | frag_then->fr_subtype = rx_bytes.n_base + rx_bytes.n_ops; | |
1113 | } | |
1114 | else | |
1115 | { | |
1116 | bytes = frag_more (rx_bytes.n_base + rx_bytes.n_ops); | |
1117 | frag_then = frag_now; | |
0e25bcb4 DD |
1118 | if (fetchalign_bytes) |
1119 | fetchalign_bytes->n_ops = rx_bytes.n_base + rx_bytes.n_ops; | |
c7927a3c NC |
1120 | } |
1121 | ||
0e25bcb4 DD |
1122 | fetchalign_bytes = NULL; |
1123 | ||
c7927a3c NC |
1124 | APPEND (base, n_base); |
1125 | APPEND (ops, n_ops); | |
1126 | ||
1127 | if (rx_bytes.link_relax && rx_bytes.n_fixups) | |
1128 | { | |
1129 | fixS * f; | |
1130 | ||
1131 | f = fix_new (frag_then, | |
1132 | (char *) bytes - frag_then->fr_literal, | |
1133 | 0, | |
1134 | abs_section_sym, | |
1135 | rx_bytes.link_relax | rx_bytes.n_fixups, | |
1136 | 0, | |
1137 | BFD_RELOC_RX_RELAX); | |
1138 | frag_then->tc_frag_data->link_relax_fixP = f; | |
1139 | } | |
1140 | ||
1141 | for (i = 0; i < rx_bytes.n_fixups; i ++) | |
1142 | { | |
1143 | /* index: [nbytes][type] */ | |
1144 | static int reloc_map[5][4] = | |
1145 | { | |
1146 | { 0, 0, 0, BFD_RELOC_RX_DIR3U_PCREL }, | |
1147 | { BFD_RELOC_8, BFD_RELOC_RX_8U, BFD_RELOC_RX_NEG8, BFD_RELOC_8_PCREL }, | |
1148 | { BFD_RELOC_RX_16_OP, BFD_RELOC_RX_16U, BFD_RELOC_RX_NEG16, BFD_RELOC_16_PCREL }, | |
1149 | { BFD_RELOC_RX_24_OP, BFD_RELOC_RX_24U, BFD_RELOC_RX_NEG24, BFD_RELOC_24_PCREL }, | |
1150 | { BFD_RELOC_RX_32_OP, BFD_RELOC_32, BFD_RELOC_RX_NEG32, BFD_RELOC_32_PCREL }, | |
1151 | }; | |
1152 | fixS * f; | |
1153 | ||
1154 | idx = rx_bytes.fixups[i].offset / 8; | |
1155 | rel = reloc_map [rx_bytes.fixups[i].nbits / 8][(int) rx_bytes.fixups[i].type]; | |
1156 | ||
1157 | if (rx_bytes.fixups[i].reloc) | |
1158 | rel = rx_bytes.fixups[i].reloc; | |
1159 | ||
1160 | if (frag_then->tc_frag_data) | |
1161 | exp = & frag_then->tc_frag_data->fixups[i].exp; | |
1162 | else | |
1163 | exp = & rx_bytes.fixups[i].exp; | |
1164 | ||
1165 | f = fix_new_exp (frag_then, | |
1166 | (char *) bytes + idx - frag_then->fr_literal, | |
1167 | rx_bytes.fixups[i].nbits / 8, | |
1168 | exp, | |
1169 | rx_bytes.fixups[i].type == RXREL_PCREL ? 1 : 0, | |
1170 | rel); | |
1171 | if (frag_then->tc_frag_data) | |
1172 | frag_then->tc_frag_data->fixups[i].fixP = f; | |
1173 | } | |
1174 | ||
1175 | dwarf2_emit_insn (idx); | |
1176 | } | |
1177 | ||
1178 | void | |
1179 | rx_md_end (void) | |
1180 | { | |
1181 | } | |
1182 | ||
1183 | /* Write a value out to the object file, using the appropriate endianness. */ | |
1184 | ||
1185 | void | |
1186 | md_number_to_chars (char * buf, valueT val, int n) | |
1187 | { | |
1188 | if (target_big_endian) | |
1189 | number_to_chars_bigendian (buf, val, n); | |
1190 | else | |
1191 | number_to_chars_littleendian (buf, val, n); | |
1192 | } | |
1193 | ||
1194 | static struct | |
1195 | { | |
1196 | char * fname; | |
1197 | int reloc; | |
1198 | } | |
1199 | reloc_functions[] = | |
1200 | { | |
1201 | { "gp", BFD_RELOC_GPREL16 }, | |
1202 | { 0, 0 } | |
1203 | }; | |
1204 | ||
1205 | void | |
1206 | md_operand (expressionS * exp ATTRIBUTE_UNUSED) | |
1207 | { | |
1208 | int reloc = 0; | |
1209 | int i; | |
1210 | ||
1211 | for (i = 0; reloc_functions[i].fname; i++) | |
1212 | { | |
1213 | int flen = strlen (reloc_functions[i].fname); | |
1214 | ||
1215 | if (input_line_pointer[0] == '%' | |
1216 | && strncasecmp (input_line_pointer + 1, reloc_functions[i].fname, flen) == 0 | |
1217 | && input_line_pointer[flen + 1] == '(') | |
1218 | { | |
1219 | reloc = reloc_functions[i].reloc; | |
1220 | input_line_pointer += flen + 2; | |
1221 | break; | |
1222 | } | |
1223 | } | |
1224 | if (reloc == 0) | |
1225 | return; | |
1226 | ||
1227 | expression (exp); | |
1228 | if (* input_line_pointer == ')') | |
1229 | input_line_pointer ++; | |
1230 | ||
1231 | exp->X_md = reloc; | |
1232 | } | |
1233 | ||
1234 | valueT | |
1235 | md_section_align (segT segment, valueT size) | |
1236 | { | |
1237 | int align = bfd_get_section_alignment (stdoutput, segment); | |
1238 | return ((size + (1 << align) - 1) & (-1 << align)); | |
1239 | } | |
1240 | ||
731df70d DD |
1241 | /* NOP - 1 cycle */ |
1242 | static unsigned char nop_1[] = { 0x03}; | |
1243 | /* MOV.L R0,R0 - 1 cycle */ | |
1244 | static unsigned char nop_2[] = { 0xef, 0x00}; | |
1245 | /* MAX R0,R0 - 1 cycle */ | |
1246 | static unsigned char nop_3[] = { 0xfc, 0x13, 0x00 }; | |
1247 | /* MUL #1,R0 - 1 cycle */ | |
1248 | static unsigned char nop_4[] = { 0x76, 0x10, 0x01, 0x00 }; | |
1249 | /* MUL #1,R0 - 1 cycle */ | |
1250 | static unsigned char nop_5[] = { 0x77, 0x10, 0x01, 0x00, 0x00 }; | |
1251 | /* MUL #1,R0 - 1 cycle */ | |
1252 | static unsigned char nop_6[] = { 0x74, 0x10, 0x01, 0x00, 0x00, 0x00 }; | |
1253 | /* BRA.S .+7 - 1 cycle */ | |
1254 | static unsigned char nop_7[] = { 0x0F, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03 }; | |
1255 | ||
1256 | static unsigned char *nops[] = { NULL, nop_1, nop_2, nop_3, nop_4, nop_5, nop_6, nop_7 }; | |
1257 | #define BIGGEST_NOP 7 | |
1258 | ||
c7927a3c NC |
1259 | /* When relaxing, we need to output a reloc for any .align directive |
1260 | so that we can retain this alignment as we adjust opcode sizes. */ | |
1261 | void | |
1262 | rx_handle_align (fragS * frag) | |
1263 | { | |
a22429b9 NC |
1264 | /* If handling an alignment frag, use an optimal NOP pattern. |
1265 | Only do this if a fill value has not already been provided. | |
1266 | FIXME: This test fails if the provided fill value is zero. */ | |
731df70d DD |
1267 | if ((frag->fr_type == rs_align |
1268 | || frag->fr_type == rs_align_code) | |
1269 | && subseg_text_p (now_seg)) | |
1270 | { | |
1271 | int count = (frag->fr_next->fr_address | |
d4cb0ea0 | 1272 | - frag->fr_address |
731df70d DD |
1273 | - frag->fr_fix); |
1274 | unsigned char *base = (unsigned char *)frag->fr_literal + frag->fr_fix; | |
1275 | ||
a22429b9 | 1276 | if (* base == 0) |
731df70d | 1277 | { |
a22429b9 NC |
1278 | if (count > BIGGEST_NOP) |
1279 | { | |
1280 | base[0] = 0x2e; | |
1281 | base[1] = count; | |
1282 | frag->fr_var = 2; | |
1283 | } | |
1284 | else if (count > 0) | |
1285 | { | |
1286 | memcpy (base, nops[count], count); | |
1287 | frag->fr_var = count; | |
1288 | } | |
731df70d DD |
1289 | } |
1290 | } | |
1291 | ||
c7927a3c NC |
1292 | if (linkrelax |
1293 | && (frag->fr_type == rs_align | |
1294 | || frag->fr_type == rs_align_code) | |
1295 | && frag->fr_address + frag->fr_fix > 0 | |
1296 | && frag->fr_offset > 0 | |
1297 | && now_seg != bss_section) | |
1298 | { | |
1299 | fix_new (frag, frag->fr_fix, 0, | |
1300 | &abs_symbol, RX_RELAXA_ALIGN + frag->fr_offset, | |
1301 | 0, BFD_RELOC_RX_RELAX); | |
1302 | /* For the purposes of relaxation, this relocation is attached | |
1303 | to the byte *after* the alignment - i.e. the byte that must | |
1304 | remain aligned. */ | |
1305 | fix_new (frag->fr_next, 0, 0, | |
1306 | &abs_symbol, RX_RELAXA_ELIGN + frag->fr_offset, | |
1307 | 0, BFD_RELOC_RX_RELAX); | |
1308 | } | |
1309 | } | |
1310 | ||
1311 | char * | |
1312 | md_atof (int type, char * litP, int * sizeP) | |
1313 | { | |
1314 | return ieee_md_atof (type, litP, sizeP, target_big_endian); | |
1315 | } | |
1316 | ||
1317 | symbolS * | |
1318 | md_undefined_symbol (char * name ATTRIBUTE_UNUSED) | |
1319 | { | |
1320 | return NULL; | |
1321 | } | |
1322 | ||
1323 | /*----------------------------------------------------------------------*/ | |
1324 | /* To recap: we estimate everything based on md_estimate_size, then | |
1325 | adjust based on rx_relax_frag. When it all settles, we call | |
1326 | md_convert frag to update the bytes. The relaxation types and | |
1327 | relocations are in fragP->tc_frag_data, which is a copy of that | |
1328 | rx_bytes. | |
1329 | ||
1330 | Our scheme is as follows: fr_fix has the size of the smallest | |
1331 | opcode (like BRA.S). We store the number of total bytes we need in | |
1332 | fr_subtype. When we're done relaxing, we use fr_subtype and the | |
1333 | existing opcode bytes to figure out what actual opcode we need to | |
1334 | put in there. If the fixup isn't resolvable now, we use the | |
1335 | maximal size. */ | |
1336 | ||
1337 | #define TRACE_RELAX 0 | |
1338 | #define tprintf if (TRACE_RELAX) printf | |
1339 | ||
1340 | typedef enum | |
1341 | { | |
1342 | OT_other, | |
1343 | OT_bra, | |
1344 | OT_beq, | |
1345 | OT_bne, | |
1346 | OT_bsr, | |
1347 | OT_bcc | |
1348 | } op_type_T; | |
1349 | ||
1350 | /* We're looking for these types of relaxations: | |
1351 | ||
1352 | BRA.S 00001dsp | |
1353 | BRA.B 00101110 dspppppp | |
1354 | BRA.W 00111000 dspppppp pppppppp | |
1355 | BRA.A 00000100 dspppppp pppppppp pppppppp | |
1356 | ||
1357 | BEQ.S 00010dsp | |
1358 | BEQ.B 00100000 dspppppp | |
1359 | BEQ.W 00111010 dspppppp pppppppp | |
1360 | ||
1361 | BNE.S 00011dsp | |
1362 | BNE.B 00100001 dspppppp | |
1363 | BNE.W 00111011 dspppppp pppppppp | |
1364 | ||
1365 | BSR.W 00111001 dspppppp pppppppp | |
1366 | BSR.A 00000101 dspppppp pppppppp pppppppp | |
1367 | ||
1368 | Bcc.B 0010cond dspppppp | |
1369 | ||
1370 | Additionally, we can synthesize longer conditional branches using | |
1371 | pairs of opcodes, one with an inverted conditional (flip LSB): | |
1372 | ||
1373 | Bcc.W 0010ncnd 00000110 00111000 dspppppp pppppppp | |
1374 | Bcc.A 0010ncnd 00000111 00000100 dspppppp pppppppp pppppppp | |
1375 | BEQ.A 00011100 00000100 dspppppp pppppppp pppppppp | |
1376 | BNE.A 00010100 00000100 dspppppp pppppppp pppppppp */ | |
1377 | ||
1378 | /* Given the opcode bytes at OP, figure out which opcode it is and | |
1379 | return the type of opcode. We use this to re-encode the opcode as | |
1380 | a different size later. */ | |
1381 | ||
1382 | static op_type_T | |
1383 | rx_opcode_type (char * op) | |
1384 | { | |
1385 | unsigned char b = (unsigned char) op[0]; | |
1386 | ||
1387 | switch (b & 0xf8) | |
1388 | { | |
1389 | case 0x08: return OT_bra; | |
1390 | case 0x10: return OT_beq; | |
1391 | case 0x18: return OT_bne; | |
1392 | } | |
1393 | ||
1394 | switch (b) | |
1395 | { | |
1396 | case 0x2e: return OT_bra; | |
1397 | case 0x38: return OT_bra; | |
1398 | case 0x04: return OT_bra; | |
1399 | ||
1400 | case 0x20: return OT_beq; | |
1401 | case 0x3a: return OT_beq; | |
1402 | ||
1403 | case 0x21: return OT_bne; | |
1404 | case 0x3b: return OT_bne; | |
1405 | ||
1406 | case 0x39: return OT_bsr; | |
1407 | case 0x05: return OT_bsr; | |
1408 | } | |
1409 | ||
1410 | if ((b & 0xf0) == 0x20) | |
1411 | return OT_bcc; | |
1412 | ||
1413 | return OT_other; | |
1414 | } | |
1415 | ||
1416 | /* Returns zero if *addrP has the target address. Else returns nonzero | |
1417 | if we cannot compute the target address yet. */ | |
1418 | ||
1419 | static int | |
1420 | rx_frag_fix_value (fragS * fragP, | |
1421 | segT segment, | |
1422 | int which, | |
1423 | addressT * addrP, | |
1424 | int need_diff, | |
1425 | addressT * sym_addr) | |
1426 | { | |
1427 | addressT addr = 0; | |
1428 | rx_bytesT * b = fragP->tc_frag_data; | |
1429 | expressionS * exp = & b->fixups[which].exp; | |
1430 | ||
1431 | if (need_diff && exp->X_op != O_subtract) | |
1432 | return 1; | |
1433 | ||
1434 | if (exp->X_add_symbol) | |
1435 | { | |
1436 | if (S_FORCE_RELOC (exp->X_add_symbol, 1)) | |
1437 | return 1; | |
1438 | if (S_GET_SEGMENT (exp->X_add_symbol) != segment) | |
1439 | return 1; | |
1440 | addr += S_GET_VALUE (exp->X_add_symbol); | |
1441 | } | |
1442 | ||
1443 | if (exp->X_op_symbol) | |
1444 | { | |
1445 | if (exp->X_op != O_subtract) | |
1446 | return 1; | |
1447 | if (S_FORCE_RELOC (exp->X_op_symbol, 1)) | |
1448 | return 1; | |
1449 | if (S_GET_SEGMENT (exp->X_op_symbol) != segment) | |
1450 | return 1; | |
1451 | addr -= S_GET_VALUE (exp->X_op_symbol); | |
1452 | } | |
1453 | if (sym_addr) | |
1454 | * sym_addr = addr; | |
1455 | addr += exp->X_add_number; | |
1456 | * addrP = addr; | |
1457 | return 0; | |
1458 | } | |
1459 | ||
1460 | /* Estimate how big the opcode is after this relax pass. The return | |
1461 | value is the difference between fr_fix and the actual size. We | |
1462 | compute the total size in rx_relax_frag and store it in fr_subtype, | |
1463 | sowe only need to subtract fx_fix and return it. */ | |
1464 | ||
1465 | int | |
1466 | md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED, segT segment ATTRIBUTE_UNUSED) | |
1467 | { | |
1468 | int opfixsize; | |
1469 | int delta; | |
1470 | ||
1471 | 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 |
1472 | (unsigned long) (fragP->fr_address |
1473 | + (fragP->fr_opcode - fragP->fr_literal)), | |
1474 | (long) fragP->fr_fix, (long) fragP->fr_var, (long) fragP->fr_offset, | |
c7927a3c NC |
1475 | fragP->fr_literal, fragP->fr_opcode, fragP->fr_type, fragP->fr_subtype); |
1476 | ||
1477 | /* This is the size of the opcode that's accounted for in fr_fix. */ | |
1478 | opfixsize = fragP->fr_fix - (fragP->fr_opcode - fragP->fr_literal); | |
1479 | /* This is the size of the opcode that isn't. */ | |
1480 | delta = (fragP->fr_subtype - opfixsize); | |
1481 | ||
1482 | tprintf (" -> opfixsize %d delta %d\n", opfixsize, delta); | |
1483 | return delta; | |
1484 | } | |
1485 | ||
0e25bcb4 DD |
1486 | /* Given a frag FRAGP, return the "next" frag that contains an |
1487 | opcode. Assumes the next opcode is relaxable, and thus rs_machine_dependent. */ | |
1488 | ||
1489 | static fragS * | |
1490 | rx_next_opcode (fragS *fragP) | |
1491 | { | |
1492 | do { | |
1493 | fragP = fragP->fr_next; | |
1494 | } while (fragP && fragP->fr_type != rs_machine_dependent); | |
1495 | return fragP; | |
1496 | } | |
1497 | ||
c7927a3c NC |
1498 | /* Given the new addresses for this relax pass, figure out how big |
1499 | each opcode must be. We store the total number of bytes needed in | |
1500 | fr_subtype. The return value is the difference between the size | |
1501 | after the last pass and the size after this pass, so we use the old | |
1502 | fr_subtype to calculate the difference. */ | |
1503 | ||
1504 | int | |
1505 | rx_relax_frag (segT segment ATTRIBUTE_UNUSED, fragS * fragP, long stretch) | |
1506 | { | |
1507 | addressT addr0, sym_addr; | |
1508 | addressT mypc; | |
1509 | int disp; | |
1510 | int oldsize = fragP->fr_subtype; | |
1511 | int newsize = oldsize; | |
1512 | op_type_T optype; | |
1513 | /* Index of relaxation we care about. */ | |
1514 | int ri; | |
1515 | ||
1516 | 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 |
1517 | (unsigned long) (fragP->fr_address |
1518 | + (fragP->fr_opcode - fragP->fr_literal)), | |
1519 | (long) fragP->fr_fix, (long) fragP->fr_var, (long) fragP->fr_offset, | |
c7927a3c NC |
1520 | fragP->fr_literal, fragP->fr_opcode, fragP->fr_type, fragP->fr_subtype, stretch); |
1521 | ||
0e25bcb4 DD |
1522 | mypc = fragP->fr_address + (fragP->fr_opcode - fragP->fr_literal); |
1523 | ||
1524 | if (fragP->tc_frag_data->n_base == RX_NBASE_FETCHALIGN) | |
1525 | { | |
1526 | unsigned int next_size; | |
1527 | if (fragP->fr_next == NULL) | |
1528 | return 0; | |
1529 | ||
1530 | next_size = fragP->tc_frag_data->n_ops; | |
1531 | if (next_size == 0) | |
1532 | { | |
1533 | fragS *n = rx_next_opcode (fragP); | |
1534 | next_size = n->fr_subtype; | |
1535 | } | |
1536 | ||
1537 | fragP->fr_subtype = (8-(mypc & 7)) & 7; | |
1538 | tprintf("subtype %u\n", fragP->fr_subtype); | |
1539 | if (fragP->fr_subtype >= next_size) | |
1540 | fragP->fr_subtype = 0; | |
1541 | tprintf ("\033[34m -> mypc %lu next_size %u new %d old %d delta %d (fetchalign)\033[0m\n", | |
1542 | mypc & 7, | |
1543 | next_size, fragP->fr_subtype, oldsize, fragP->fr_subtype-oldsize); | |
1544 | ||
1545 | newsize = fragP->fr_subtype; | |
1546 | ||
1547 | return newsize - oldsize; | |
1548 | } | |
1549 | ||
c7927a3c NC |
1550 | optype = rx_opcode_type (fragP->fr_opcode); |
1551 | ||
1552 | /* In the one case where we have both a disp and imm relaxation, we want | |
1553 | the imm relaxation here. */ | |
1554 | ri = 0; | |
1555 | if (fragP->tc_frag_data->n_relax > 1 | |
1556 | && fragP->tc_frag_data->relax[0].type == RX_RELAX_DISP) | |
1557 | ri = 1; | |
1558 | ||
1559 | /* Try to get the target address. */ | |
1560 | if (rx_frag_fix_value (fragP, segment, ri, & addr0, | |
1561 | fragP->tc_frag_data->relax[ri].type != RX_RELAX_BRANCH, | |
1562 | & sym_addr)) | |
1563 | { | |
1564 | /* If we don't, we must use the maximum size for the linker. | |
1565 | Note that we don't use synthetically expanded conditionals | |
1566 | for this. */ | |
1567 | switch (fragP->tc_frag_data->relax[ri].type) | |
1568 | { | |
1569 | case RX_RELAX_BRANCH: | |
1570 | switch (optype) | |
1571 | { | |
1572 | case OT_bra: | |
1573 | case OT_bsr: | |
1574 | newsize = 4; | |
1575 | break; | |
1576 | case OT_beq: | |
1577 | case OT_bne: | |
1578 | newsize = 3; | |
1579 | break; | |
1580 | case OT_bcc: | |
1581 | newsize = 2; | |
1582 | break; | |
1583 | case OT_other: | |
1584 | newsize = oldsize; | |
1585 | break; | |
1586 | } | |
1587 | break; | |
1588 | ||
1589 | case RX_RELAX_IMM: | |
1590 | newsize = fragP->tc_frag_data->relax[ri].val_ofs + 4; | |
1591 | break; | |
1592 | } | |
1593 | fragP->fr_subtype = newsize; | |
1594 | tprintf (" -> new %d old %d delta %d (external)\n", newsize, oldsize, newsize-oldsize); | |
1595 | return newsize - oldsize; | |
1596 | } | |
1597 | ||
c7927a3c NC |
1598 | if (sym_addr > mypc) |
1599 | addr0 += stretch; | |
1600 | ||
1601 | switch (fragP->tc_frag_data->relax[ri].type) | |
1602 | { | |
1603 | case RX_RELAX_BRANCH: | |
4e92bb1c AM |
1604 | tprintf ("branch, addr %08lx pc %08lx disp %ld\n", |
1605 | (unsigned long) addr0, (unsigned long) mypc, | |
1606 | (long) (addr0 - mypc)); | |
c7927a3c NC |
1607 | disp = (int) addr0 - (int) mypc; |
1608 | ||
1609 | switch (optype) | |
1610 | { | |
1611 | case OT_bcc: | |
1612 | if (disp >= -128 && (disp - (oldsize-2)) <= 127) | |
1613 | /* bcc.b */ | |
1614 | newsize = 2; | |
1615 | else if (disp >= -32768 && (disp - (oldsize-5)) <= 32767) | |
1616 | /* bncc.b/bra.w */ | |
1617 | newsize = 5; | |
1618 | else | |
1619 | /* bncc.b/bra.a */ | |
1620 | newsize = 6; | |
1621 | break; | |
1622 | ||
1623 | case OT_beq: | |
1624 | case OT_bne: | |
1625 | if ((disp - (oldsize-1)) >= 3 && (disp - (oldsize-1)) <= 10 && !linkrelax) | |
1626 | /* beq.s */ | |
1627 | newsize = 1; | |
1628 | else if (disp >= -128 && (disp - (oldsize-2)) <= 127) | |
1629 | /* beq.b */ | |
1630 | newsize = 2; | |
1631 | else if (disp >= -32768 && (disp - (oldsize-3)) <= 32767) | |
1632 | /* beq.w */ | |
1633 | newsize = 3; | |
1634 | else | |
1635 | /* bne.s/bra.a */ | |
1636 | newsize = 5; | |
1637 | break; | |
1638 | ||
1639 | case OT_bra: | |
1640 | case OT_bsr: | |
1641 | if ((disp - (oldsize-1)) >= 3 && (disp - (oldsize-1)) <= 10 && !linkrelax) | |
1642 | /* bra.s */ | |
1643 | newsize = 1; | |
1644 | else if (disp >= -128 && (disp - (oldsize-2)) <= 127) | |
1645 | /* bra.b */ | |
1646 | newsize = 2; | |
1647 | else if (disp >= -32768 && (disp - (oldsize-3)) <= 32767) | |
1648 | /* bra.w */ | |
1649 | newsize = 3; | |
1650 | else | |
1651 | /* bra.a */ | |
1652 | newsize = 4; | |
1653 | break; | |
1654 | ||
1655 | case OT_other: | |
1656 | break; | |
1657 | } | |
1658 | tprintf (" - newsize %d\n", newsize); | |
1659 | break; | |
1660 | ||
1661 | case RX_RELAX_IMM: | |
4e92bb1c AM |
1662 | tprintf ("other, addr %08lx pc %08lx LI %d OF %d\n", |
1663 | (unsigned long) addr0, (unsigned long) mypc, | |
c7927a3c NC |
1664 | fragP->tc_frag_data->relax[ri].field_pos, |
1665 | fragP->tc_frag_data->relax[ri].val_ofs); | |
1666 | ||
1667 | newsize = fragP->tc_frag_data->relax[ri].val_ofs; | |
1668 | ||
1669 | if ((long) addr0 >= -128 && (long) addr0 <= 127) | |
1670 | newsize += 1; | |
1671 | else if ((long) addr0 >= -32768 && (long) addr0 <= 32767) | |
1672 | newsize += 2; | |
1673 | else if ((long) addr0 >= -8388608 && (long) addr0 <= 8388607) | |
1674 | newsize += 3; | |
1675 | else | |
1676 | newsize += 4; | |
1677 | break; | |
1678 | ||
1679 | default: | |
1680 | break; | |
1681 | } | |
1682 | ||
1683 | if (fragP->tc_frag_data->relax[ri].type == RX_RELAX_BRANCH) | |
1684 | switch (optype) | |
1685 | { | |
1686 | case OT_bra: | |
1687 | case OT_bcc: | |
1688 | case OT_beq: | |
1689 | case OT_bne: | |
1690 | break; | |
1691 | case OT_bsr: | |
1692 | if (newsize < 3) | |
1693 | newsize = 3; | |
1694 | break; | |
1695 | case OT_other: | |
1696 | break; | |
1697 | } | |
1698 | ||
44a808b1 DD |
1699 | /* This prevents infinite loops in align-heavy sources. */ |
1700 | if (newsize < oldsize) | |
1701 | { | |
1702 | if (fragP->tc_frag_data->times_shrank > 10 | |
1703 | && fragP->tc_frag_data->times_grown > 10) | |
1704 | newsize = oldsize; | |
1705 | if (fragP->tc_frag_data->times_shrank < 20) | |
1706 | fragP->tc_frag_data->times_shrank ++; | |
1707 | } | |
1708 | else if (newsize > oldsize) | |
1709 | { | |
1710 | if (fragP->tc_frag_data->times_grown < 20) | |
1711 | fragP->tc_frag_data->times_grown ++; | |
1712 | } | |
1713 | ||
c7927a3c NC |
1714 | fragP->fr_subtype = newsize; |
1715 | tprintf (" -> new %d old %d delta %d\n", newsize, oldsize, newsize-oldsize); | |
1716 | return newsize - oldsize; | |
1717 | } | |
1718 | ||
1719 | /* This lets us test for the opcode type and the desired size in a | |
1720 | switch statement. */ | |
1721 | #define OPCODE(type,size) ((type) * 16 + (size)) | |
1722 | ||
1723 | /* Given the opcode stored in fr_opcode and the number of bytes we | |
1724 | think we need, encode a new opcode. We stored a pointer to the | |
1725 | fixup for this opcode in the tc_frag_data structure. If we can do | |
1726 | the fixup here, we change the relocation type to "none" (we test | |
1727 | for that in tc_gen_reloc) else we change it to the right type for | |
1728 | the new (biggest) opcode. */ | |
1729 | ||
1730 | void | |
1731 | md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED, | |
1732 | segT segment ATTRIBUTE_UNUSED, | |
1733 | fragS * fragP ATTRIBUTE_UNUSED) | |
1734 | { | |
1735 | rx_bytesT * rxb = fragP->tc_frag_data; | |
1736 | addressT addr0, mypc; | |
1737 | int disp; | |
1738 | int reloc_type, reloc_adjust; | |
1739 | char * op = fragP->fr_opcode; | |
1740 | int keep_reloc = 0; | |
1741 | int ri; | |
1742 | int fi = (rxb->n_fixups > 1) ? 1 : 0; | |
1743 | fixS * fix = rxb->fixups[fi].fixP; | |
1744 | ||
1745 | 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 |
1746 | (unsigned long) (fragP->fr_address |
1747 | + (fragP->fr_opcode - fragP->fr_literal)), | |
1748 | (long) fragP->fr_fix, (long) fragP->fr_var, (long) fragP->fr_offset, | |
1749 | fragP->fr_literal, fragP->fr_opcode, fragP->fr_type, | |
1750 | fragP->fr_subtype); | |
c7927a3c NC |
1751 | |
1752 | #if TRACE_RELAX | |
1753 | { | |
1754 | int i; | |
1755 | ||
0e25bcb4 | 1756 | printf ("lit 0x%p opc 0x%p", fragP->fr_literal, fragP->fr_opcode); |
c7927a3c NC |
1757 | for (i = 0; i < 10; i++) |
1758 | printf (" %02x", (unsigned char) (fragP->fr_opcode[i])); | |
1759 | printf ("\n"); | |
1760 | } | |
1761 | #endif | |
1762 | ||
0e25bcb4 DD |
1763 | if (fragP->tc_frag_data->n_base == RX_NBASE_FETCHALIGN) |
1764 | { | |
1765 | int count = fragP->fr_subtype; | |
1766 | if (count == 0) | |
1767 | ; | |
1768 | else if (count > BIGGEST_NOP) | |
1769 | { | |
1770 | op[0] = 0x2e; | |
1771 | op[1] = count; | |
1772 | } | |
1773 | else if (count > 0) | |
1774 | { | |
1775 | memcpy (op, nops[count], count); | |
1776 | } | |
1777 | } | |
1778 | ||
c7927a3c NC |
1779 | /* In the one case where we have both a disp and imm relaxation, we want |
1780 | the imm relaxation here. */ | |
1781 | ri = 0; | |
1782 | if (fragP->tc_frag_data->n_relax > 1 | |
1783 | && fragP->tc_frag_data->relax[0].type == RX_RELAX_DISP) | |
1784 | ri = 1; | |
1785 | ||
eb6fae19 DD |
1786 | /* We used a new frag for this opcode, so the opcode address should |
1787 | be the frag address. */ | |
1788 | mypc = fragP->fr_address + (fragP->fr_opcode - fragP->fr_literal); | |
1789 | ||
c7927a3c NC |
1790 | /* Try to get the target address. If we fail here, we just use the |
1791 | largest format. */ | |
1792 | if (rx_frag_fix_value (fragP, segment, 0, & addr0, | |
1793 | fragP->tc_frag_data->relax[ri].type != RX_RELAX_BRANCH, 0)) | |
eb6fae19 DD |
1794 | { |
1795 | /* We don't know the target address. */ | |
1796 | keep_reloc = 1; | |
1797 | addr0 = 0; | |
1798 | disp = 0; | |
1799 | } | |
1800 | else | |
1801 | { | |
1802 | /* We know the target address, and it's in addr0. */ | |
1803 | disp = (int) addr0 - (int) mypc; | |
1804 | } | |
c7927a3c NC |
1805 | |
1806 | if (linkrelax) | |
1807 | keep_reloc = 1; | |
1808 | ||
c7927a3c NC |
1809 | reloc_type = BFD_RELOC_NONE; |
1810 | reloc_adjust = 0; | |
1811 | ||
4e92bb1c AM |
1812 | tprintf ("convert, op is %d, disp %d (%lx-%lx)\n", |
1813 | rx_opcode_type (fragP->fr_opcode), disp, | |
1814 | (unsigned long) addr0, (unsigned long) mypc); | |
c7927a3c NC |
1815 | switch (fragP->tc_frag_data->relax[ri].type) |
1816 | { | |
1817 | case RX_RELAX_BRANCH: | |
1818 | switch (OPCODE (rx_opcode_type (fragP->fr_opcode), fragP->fr_subtype)) | |
1819 | { | |
1820 | case OPCODE (OT_bra, 1): /* BRA.S - no change. */ | |
1821 | op[0] = 0x08 + (disp & 7); | |
1822 | break; | |
1823 | case OPCODE (OT_bra, 2): /* BRA.B - 8 bit. */ | |
1824 | op[0] = 0x2e; | |
1825 | op[1] = disp; | |
1826 | reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE; | |
1827 | reloc_adjust = 1; | |
1828 | break; | |
1829 | case OPCODE (OT_bra, 3): /* BRA.W - 16 bit. */ | |
1830 | op[0] = 0x38; | |
1831 | #if RX_OPCODE_BIG_ENDIAN | |
1832 | op[1] = (disp >> 8) & 0xff; | |
1833 | op[2] = disp; | |
1834 | #else | |
1835 | op[2] = (disp >> 8) & 0xff; | |
1836 | op[1] = disp; | |
1837 | #endif | |
1838 | reloc_adjust = 1; | |
1839 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; | |
1840 | break; | |
1841 | case OPCODE (OT_bra, 4): /* BRA.A - 24 bit. */ | |
1842 | op[0] = 0x04; | |
1843 | #if RX_OPCODE_BIG_ENDIAN | |
1844 | op[1] = (disp >> 16) & 0xff; | |
1845 | op[2] = (disp >> 8) & 0xff; | |
1846 | op[3] = disp; | |
1847 | #else | |
1848 | op[3] = (disp >> 16) & 0xff; | |
1849 | op[2] = (disp >> 8) & 0xff; | |
1850 | op[1] = disp; | |
1851 | #endif | |
1852 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; | |
1853 | reloc_adjust = 1; | |
1854 | break; | |
1855 | ||
1856 | case OPCODE (OT_beq, 1): /* BEQ.S - no change. */ | |
1857 | op[0] = 0x10 + (disp & 7); | |
1858 | break; | |
1859 | case OPCODE (OT_beq, 2): /* BEQ.B - 8 bit. */ | |
1860 | op[0] = 0x20; | |
1861 | op[1] = disp; | |
1862 | reloc_adjust = 1; | |
1863 | reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE; | |
1864 | break; | |
1865 | case OPCODE (OT_beq, 3): /* BEQ.W - 16 bit. */ | |
1866 | op[0] = 0x3a; | |
1867 | #if RX_OPCODE_BIG_ENDIAN | |
1868 | op[1] = (disp >> 8) & 0xff; | |
1869 | op[2] = disp; | |
1870 | #else | |
1871 | op[2] = (disp >> 8) & 0xff; | |
1872 | op[1] = disp; | |
1873 | #endif | |
1874 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; | |
1875 | reloc_adjust = 1; | |
1876 | break; | |
1877 | case OPCODE (OT_beq, 5): /* BEQ.A - synthetic. */ | |
53d780c9 | 1878 | op[0] = 0x1d; /* bne.s .+5. */ |
c7927a3c NC |
1879 | op[1] = 0x04; /* bra.a dsp:24. */ |
1880 | disp -= 1; | |
1881 | #if RX_OPCODE_BIG_ENDIAN | |
1882 | op[2] = (disp >> 16) & 0xff; | |
1883 | op[3] = (disp >> 8) & 0xff; | |
1884 | op[4] = disp; | |
1885 | #else | |
1886 | op[4] = (disp >> 16) & 0xff; | |
1887 | op[3] = (disp >> 8) & 0xff; | |
1888 | op[2] = disp; | |
1889 | #endif | |
1890 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; | |
1891 | reloc_adjust = 2; | |
1892 | break; | |
1893 | ||
1894 | case OPCODE (OT_bne, 1): /* BNE.S - no change. */ | |
1895 | op[0] = 0x18 + (disp & 7); | |
1896 | break; | |
1897 | case OPCODE (OT_bne, 2): /* BNE.B - 8 bit. */ | |
1898 | op[0] = 0x21; | |
1899 | op[1] = disp; | |
1900 | reloc_adjust = 1; | |
1901 | reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE; | |
1902 | break; | |
1903 | case OPCODE (OT_bne, 3): /* BNE.W - 16 bit. */ | |
1904 | op[0] = 0x3b; | |
1905 | #if RX_OPCODE_BIG_ENDIAN | |
1906 | op[1] = (disp >> 8) & 0xff; | |
1907 | op[2] = disp; | |
1908 | #else | |
1909 | op[2] = (disp >> 8) & 0xff; | |
1910 | op[1] = disp; | |
1911 | #endif | |
1912 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; | |
1913 | reloc_adjust = 1; | |
1914 | break; | |
1915 | case OPCODE (OT_bne, 5): /* BNE.A - synthetic. */ | |
53d780c9 | 1916 | op[0] = 0x15; /* beq.s .+5. */ |
c7927a3c NC |
1917 | op[1] = 0x04; /* bra.a dsp:24. */ |
1918 | disp -= 1; | |
1919 | #if RX_OPCODE_BIG_ENDIAN | |
1920 | op[2] = (disp >> 16) & 0xff; | |
1921 | op[3] = (disp >> 8) & 0xff; | |
1922 | op[4] = disp; | |
1923 | #else | |
1924 | op[4] = (disp >> 16) & 0xff; | |
1925 | op[3] = (disp >> 8) & 0xff; | |
1926 | op[2] = disp; | |
1927 | #endif | |
1928 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; | |
1929 | reloc_adjust = 2; | |
1930 | break; | |
1931 | ||
1932 | case OPCODE (OT_bsr, 3): /* BSR.W - 16 bit. */ | |
1933 | op[0] = 0x39; | |
1934 | #if RX_OPCODE_BIG_ENDIAN | |
1935 | op[1] = (disp >> 8) & 0xff; | |
1936 | op[2] = disp; | |
1937 | #else | |
1938 | op[2] = (disp >> 8) & 0xff; | |
1939 | op[1] = disp; | |
1940 | #endif | |
1941 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; | |
1942 | reloc_adjust = 0; | |
1943 | break; | |
1944 | case OPCODE (OT_bsr, 4): /* BSR.A - 24 bit. */ | |
1945 | op[0] = 0x05; | |
1946 | #if RX_OPCODE_BIG_ENDIAN | |
1947 | op[1] = (disp >> 16) & 0xff; | |
1948 | op[2] = (disp >> 8) & 0xff; | |
1949 | op[3] = disp; | |
1950 | #else | |
1951 | op[3] = (disp >> 16) & 0xff; | |
1952 | op[2] = (disp >> 8) & 0xff; | |
1953 | op[1] = disp; | |
1954 | #endif | |
1955 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; | |
1956 | reloc_adjust = 0; | |
1957 | break; | |
1958 | ||
1959 | case OPCODE (OT_bcc, 2): /* Bcond.B - 8 bit. */ | |
1960 | op[1] = disp; | |
1961 | reloc_type = keep_reloc ? BFD_RELOC_8_PCREL : BFD_RELOC_NONE; | |
1962 | break; | |
1963 | case OPCODE (OT_bcc, 5): /* Bcond.W - synthetic. */ | |
1964 | op[0] ^= 1; /* Invert condition. */ | |
1965 | op[1] = 5; /* Displacement. */ | |
1966 | op[2] = 0x38; | |
1967 | disp -= 2; | |
1968 | #if RX_OPCODE_BIG_ENDIAN | |
1969 | op[3] = (disp >> 8) & 0xff; | |
1970 | op[4] = disp; | |
1971 | #else | |
1972 | op[4] = (disp >> 8) & 0xff; | |
1973 | op[3] = disp; | |
1974 | #endif | |
1975 | reloc_type = keep_reloc ? BFD_RELOC_16_PCREL : BFD_RELOC_NONE; | |
1976 | reloc_adjust = 2; | |
1977 | break; | |
1978 | case OPCODE (OT_bcc, 6): /* Bcond.S - synthetic. */ | |
1979 | op[0] ^= 1; /* Invert condition. */ | |
1980 | op[1] = 6; /* Displacement. */ | |
1981 | op[2] = 0x04; | |
1982 | disp -= 2; | |
1983 | #if RX_OPCODE_BIG_ENDIAN | |
1984 | op[3] = (disp >> 16) & 0xff; | |
1985 | op[4] = (disp >> 8) & 0xff; | |
1986 | op[5] = disp; | |
1987 | #else | |
1988 | op[5] = (disp >> 16) & 0xff; | |
1989 | op[4] = (disp >> 8) & 0xff; | |
1990 | op[3] = disp; | |
1991 | #endif | |
1992 | reloc_type = keep_reloc ? BFD_RELOC_24_PCREL : BFD_RELOC_NONE; | |
1993 | reloc_adjust = 2; | |
1994 | break; | |
1995 | ||
1996 | default: | |
1997 | /* These are opcodes we'll relax in th linker, later. */ | |
1998 | if (rxb->n_fixups) | |
1999 | reloc_type = rxb->fixups[ri].fixP->fx_r_type; | |
2000 | break; | |
2001 | } | |
2002 | break; | |
2003 | ||
2004 | case RX_RELAX_IMM: | |
2005 | { | |
2006 | int nbytes = fragP->fr_subtype - fragP->tc_frag_data->relax[ri].val_ofs; | |
2007 | int li; | |
2008 | char * imm = op + fragP->tc_frag_data->relax[ri].val_ofs; | |
2009 | ||
2010 | switch (nbytes) | |
2011 | { | |
2012 | case 1: | |
2013 | li = 1; | |
2014 | imm[0] = addr0; | |
2015 | reloc_type = BFD_RELOC_8; | |
2016 | break; | |
2017 | case 2: | |
2018 | li = 2; | |
2019 | #if RX_OPCODE_BIG_ENDIAN | |
2020 | imm[1] = addr0; | |
2021 | imm[0] = addr0 >> 8; | |
2022 | #else | |
2023 | imm[0] = addr0; | |
2024 | imm[1] = addr0 >> 8; | |
2025 | #endif | |
2026 | reloc_type = BFD_RELOC_RX_16_OP; | |
2027 | break; | |
2028 | case 3: | |
2029 | li = 3; | |
2030 | #if RX_OPCODE_BIG_ENDIAN | |
2031 | imm[2] = addr0; | |
2032 | imm[1] = addr0 >> 8; | |
2033 | imm[0] = addr0 >> 16; | |
2034 | #else | |
2035 | imm[0] = addr0; | |
2036 | imm[1] = addr0 >> 8; | |
2037 | imm[2] = addr0 >> 16; | |
2038 | #endif | |
2039 | reloc_type = BFD_RELOC_RX_24_OP; | |
2040 | break; | |
2041 | case 4: | |
2042 | li = 0; | |
2043 | #if RX_OPCODE_BIG_ENDIAN | |
2044 | imm[3] = addr0; | |
2045 | imm[2] = addr0 >> 8; | |
2046 | imm[1] = addr0 >> 16; | |
2047 | imm[0] = addr0 >> 24; | |
2048 | #else | |
2049 | imm[0] = addr0; | |
2050 | imm[1] = addr0 >> 8; | |
2051 | imm[2] = addr0 >> 16; | |
2052 | imm[3] = addr0 >> 24; | |
2053 | #endif | |
2054 | reloc_type = BFD_RELOC_RX_32_OP; | |
2055 | break; | |
2056 | default: | |
2057 | as_bad (_("invalid immediate size")); | |
2058 | li = -1; | |
2059 | } | |
2060 | ||
2061 | switch (fragP->tc_frag_data->relax[ri].field_pos) | |
2062 | { | |
2063 | case 6: | |
2064 | op[0] &= 0xfc; | |
2065 | op[0] |= li; | |
2066 | break; | |
2067 | case 12: | |
2068 | op[1] &= 0xf3; | |
2069 | op[1] |= li << 2; | |
2070 | break; | |
2071 | case 20: | |
2072 | op[2] &= 0xf3; | |
2073 | op[2] |= li << 2; | |
2074 | break; | |
2075 | default: | |
2076 | as_bad (_("invalid immediate field position")); | |
2077 | } | |
2078 | } | |
2079 | break; | |
2080 | ||
2081 | default: | |
2082 | if (rxb->n_fixups) | |
2083 | { | |
2084 | reloc_type = fix->fx_r_type; | |
2085 | reloc_adjust = 0; | |
2086 | } | |
2087 | break; | |
2088 | } | |
2089 | ||
2090 | if (rxb->n_fixups) | |
2091 | { | |
2092 | ||
2093 | fix->fx_r_type = reloc_type; | |
2094 | fix->fx_where += reloc_adjust; | |
2095 | switch (reloc_type) | |
2096 | { | |
2097 | case BFD_RELOC_NONE: | |
2098 | fix->fx_size = 0; | |
2099 | break; | |
2100 | case BFD_RELOC_8: | |
2101 | fix->fx_size = 1; | |
2102 | break; | |
2103 | case BFD_RELOC_16_PCREL: | |
2104 | case BFD_RELOC_RX_16_OP: | |
2105 | fix->fx_size = 2; | |
2106 | break; | |
2107 | case BFD_RELOC_24_PCREL: | |
2108 | case BFD_RELOC_RX_24_OP: | |
2109 | fix->fx_size = 3; | |
2110 | break; | |
2111 | case BFD_RELOC_RX_32_OP: | |
2112 | fix->fx_size = 4; | |
2113 | break; | |
2114 | } | |
2115 | } | |
2116 | ||
2117 | fragP->fr_fix = fragP->fr_subtype + (fragP->fr_opcode - fragP->fr_literal); | |
4e92bb1c | 2118 | tprintf ("fragP->fr_fix now %ld (%d + (%p - %p)\n", (long) fragP->fr_fix, |
c7927a3c NC |
2119 | fragP->fr_subtype, fragP->fr_opcode, fragP->fr_literal); |
2120 | fragP->fr_var = 0; | |
2121 | ||
2122 | if (fragP->fr_next != NULL | |
2123 | && ((offsetT) (fragP->fr_next->fr_address - fragP->fr_address) | |
2124 | != fragP->fr_fix)) | |
2125 | as_bad (_("bad frag at %p : fix %ld addr %ld %ld \n"), fragP, | |
4e92bb1c AM |
2126 | (long) fragP->fr_fix, |
2127 | (long) fragP->fr_address, (long) fragP->fr_next->fr_address); | |
c7927a3c NC |
2128 | } |
2129 | ||
2130 | #undef OPCODE | |
2131 | \f | |
2132 | int | |
2133 | rx_validate_fix_sub (struct fix * f) | |
2134 | { | |
e8ef21bf DD |
2135 | /* We permit the subtraction of two symbols in a few cases. */ |
2136 | /* mov #sym1-sym2, R3 */ | |
2137 | if (f->fx_r_type == BFD_RELOC_RX_32_OP) | |
2138 | return 1; | |
2139 | /* .long sym1-sym2 */ | |
c7927a3c NC |
2140 | if (f->fx_r_type == BFD_RELOC_RX_DIFF |
2141 | && ! f->fx_pcrel | |
e8ef21bf | 2142 | && (f->fx_size == 4 || f->fx_size == 2 || f->fx_size == 1)) |
c7927a3c NC |
2143 | return 1; |
2144 | return 0; | |
2145 | } | |
2146 | ||
2147 | long | |
2148 | md_pcrel_from_section (fixS * fixP, segT sec) | |
2149 | { | |
2150 | long rv; | |
2151 | ||
2152 | if (fixP->fx_addsy != NULL | |
2153 | && (! S_IS_DEFINED (fixP->fx_addsy) | |
2154 | || S_GET_SEGMENT (fixP->fx_addsy) != sec)) | |
2155 | /* The symbol is undefined (or is defined but not in this section). | |
2156 | Let the linker figure it out. */ | |
2157 | return 0; | |
2158 | ||
2159 | rv = fixP->fx_frag->fr_address + fixP->fx_where; | |
2160 | switch (fixP->fx_r_type) | |
2161 | { | |
2162 | case BFD_RELOC_RX_DIR3U_PCREL: | |
2163 | return rv; | |
2164 | default: | |
2165 | return rv - 1; | |
2166 | } | |
2167 | } | |
2168 | ||
2169 | void | |
2170 | rx_cons_fix_new (fragS * frag, | |
2171 | int where, | |
2172 | int size, | |
2173 | expressionS * exp) | |
2174 | { | |
2175 | bfd_reloc_code_real_type type; | |
2176 | ||
2177 | switch (size) | |
2178 | { | |
2179 | case 1: | |
2180 | type = BFD_RELOC_8; | |
2181 | break; | |
2182 | case 2: | |
2183 | type = BFD_RELOC_16; | |
2184 | break; | |
2185 | case 3: | |
2186 | type = BFD_RELOC_24; | |
2187 | break; | |
2188 | case 4: | |
2189 | type = BFD_RELOC_32; | |
2190 | break; | |
2191 | default: | |
2192 | as_bad (_("unsupported constant size %d\n"), size); | |
2193 | return; | |
2194 | } | |
2195 | ||
2196 | if (exp->X_op == O_subtract && exp->X_op_symbol) | |
2197 | { | |
2198 | if (size != 4 && size != 2 && size != 1) | |
2199 | as_bad (_("difference of two symbols only supported with .long, .short, or .byte")); | |
2200 | else | |
2201 | type = BFD_RELOC_RX_DIFF; | |
2202 | } | |
2203 | ||
2204 | fix_new_exp (frag, where, (int) size, exp, 0, type); | |
2205 | } | |
2206 | ||
2207 | void | |
2208 | md_apply_fix (struct fix * f ATTRIBUTE_UNUSED, | |
2209 | valueT * t ATTRIBUTE_UNUSED, | |
2210 | segT s ATTRIBUTE_UNUSED) | |
2211 | { | |
2212 | /* Instruction bytes are always little endian. */ | |
2213 | char * op; | |
2214 | unsigned long val; | |
2215 | ||
2216 | if (f->fx_addsy && S_FORCE_RELOC (f->fx_addsy, 1)) | |
2217 | return; | |
2218 | if (f->fx_subsy && S_FORCE_RELOC (f->fx_subsy, 1)) | |
2219 | return; | |
2220 | ||
2221 | #define OP2(x) op[target_big_endian ? 1-x : x] | |
2222 | #define OP3(x) op[target_big_endian ? 2-x : x] | |
2223 | #define OP4(x) op[target_big_endian ? 3-x : x] | |
2224 | ||
2225 | op = f->fx_frag->fr_literal + f->fx_where; | |
2226 | val = (unsigned long) * t; | |
2227 | ||
2228 | /* Opcode words are always the same endian. Data words are either | |
2229 | big or little endian. */ | |
2230 | ||
2231 | switch (f->fx_r_type) | |
2232 | { | |
2233 | case BFD_RELOC_NONE: | |
2234 | break; | |
2235 | ||
2236 | case BFD_RELOC_RX_RELAX: | |
2237 | f->fx_done = 1; | |
2238 | break; | |
2239 | ||
2240 | case BFD_RELOC_RX_DIR3U_PCREL: | |
2241 | if (val < 3 || val > 10) | |
2242 | as_bad_where (f->fx_file, f->fx_line, | |
2243 | _("jump not 3..10 bytes away (is %d)"), (int) val); | |
2244 | op[0] &= 0xf8; | |
2245 | op[0] |= val & 0x07; | |
2246 | break; | |
2247 | ||
2248 | case BFD_RELOC_8: | |
2249 | case BFD_RELOC_8_PCREL: | |
2250 | case BFD_RELOC_RX_8U: | |
2251 | op[0] = val; | |
2252 | break; | |
2253 | ||
2254 | case BFD_RELOC_16: | |
2255 | OP2(1) = val & 0xff; | |
2256 | OP2(0) = (val >> 8) & 0xff; | |
2257 | break; | |
2258 | ||
2259 | case BFD_RELOC_16_PCREL: | |
2260 | case BFD_RELOC_RX_16_OP: | |
2261 | case BFD_RELOC_RX_16U: | |
2262 | #if RX_OPCODE_BIG_ENDIAN | |
2263 | op[1] = val & 0xff; | |
2264 | op[0] = (val >> 8) & 0xff; | |
2265 | #else | |
2266 | op[0] = val & 0xff; | |
2267 | op[1] = (val >> 8) & 0xff; | |
2268 | #endif | |
2269 | break; | |
2270 | ||
2271 | case BFD_RELOC_24: | |
2272 | OP3(0) = val & 0xff; | |
2273 | OP3(1) = (val >> 8) & 0xff; | |
2274 | OP3(2) = (val >> 16) & 0xff; | |
2275 | break; | |
2276 | ||
2277 | case BFD_RELOC_24_PCREL: | |
2278 | case BFD_RELOC_RX_24_OP: | |
2279 | case BFD_RELOC_RX_24U: | |
2280 | #if RX_OPCODE_BIG_ENDIAN | |
2281 | op[2] = val & 0xff; | |
2282 | op[1] = (val >> 8) & 0xff; | |
2283 | op[0] = (val >> 16) & 0xff; | |
2284 | #else | |
2285 | op[0] = val & 0xff; | |
2286 | op[1] = (val >> 8) & 0xff; | |
2287 | op[2] = (val >> 16) & 0xff; | |
2288 | #endif | |
2289 | break; | |
2290 | ||
2291 | case BFD_RELOC_RX_DIFF: | |
2292 | switch (f->fx_size) | |
2293 | { | |
2294 | case 1: | |
2295 | op[0] = val & 0xff; | |
2296 | break; | |
2297 | case 2: | |
2298 | OP2(0) = val & 0xff; | |
2299 | OP2(1) = (val >> 8) & 0xff; | |
2300 | break; | |
2301 | case 4: | |
2302 | OP4(0) = val & 0xff; | |
2303 | OP4(1) = (val >> 8) & 0xff; | |
2304 | OP4(2) = (val >> 16) & 0xff; | |
2305 | OP4(3) = (val >> 24) & 0xff; | |
2306 | break; | |
2307 | } | |
2308 | break; | |
2309 | ||
2310 | case BFD_RELOC_32: | |
2311 | OP4(0) = val & 0xff; | |
2312 | OP4(1) = (val >> 8) & 0xff; | |
2313 | OP4(2) = (val >> 16) & 0xff; | |
2314 | OP4(3) = (val >> 24) & 0xff; | |
2315 | break; | |
2316 | ||
2317 | case BFD_RELOC_RX_32_OP: | |
2318 | #if RX_OPCODE_BIG_ENDIAN | |
2319 | op[3] = val & 0xff; | |
2320 | op[2] = (val >> 8) & 0xff; | |
2321 | op[1] = (val >> 16) & 0xff; | |
2322 | op[0] = (val >> 24) & 0xff; | |
2323 | #else | |
2324 | op[0] = val & 0xff; | |
2325 | op[1] = (val >> 8) & 0xff; | |
2326 | op[2] = (val >> 16) & 0xff; | |
2327 | op[3] = (val >> 24) & 0xff; | |
2328 | #endif | |
2329 | break; | |
2330 | ||
2331 | case BFD_RELOC_RX_NEG8: | |
2332 | op[0] = - val; | |
2333 | break; | |
2334 | ||
2335 | case BFD_RELOC_RX_NEG16: | |
2336 | val = -val; | |
2337 | #if RX_OPCODE_BIG_ENDIAN | |
2338 | op[1] = val & 0xff; | |
2339 | op[0] = (val >> 8) & 0xff; | |
2340 | #else | |
2341 | op[0] = val & 0xff; | |
2342 | op[1] = (val >> 8) & 0xff; | |
2343 | #endif | |
2344 | break; | |
2345 | ||
2346 | case BFD_RELOC_RX_NEG24: | |
2347 | val = -val; | |
2348 | #if RX_OPCODE_BIG_ENDIAN | |
2349 | op[2] = val & 0xff; | |
2350 | op[1] = (val >> 8) & 0xff; | |
2351 | op[0] = (val >> 16) & 0xff; | |
2352 | #else | |
2353 | op[0] = val & 0xff; | |
2354 | op[1] = (val >> 8) & 0xff; | |
2355 | op[2] = (val >> 16) & 0xff; | |
2356 | #endif | |
2357 | break; | |
2358 | ||
2359 | case BFD_RELOC_RX_NEG32: | |
2360 | val = -val; | |
2361 | #if RX_OPCODE_BIG_ENDIAN | |
2362 | op[3] = val & 0xff; | |
2363 | op[2] = (val >> 8) & 0xff; | |
2364 | op[1] = (val >> 16) & 0xff; | |
2365 | op[0] = (val >> 24) & 0xff; | |
2366 | #else | |
2367 | op[0] = val & 0xff; | |
2368 | op[1] = (val >> 8) & 0xff; | |
2369 | op[2] = (val >> 16) & 0xff; | |
2370 | op[3] = (val >> 24) & 0xff; | |
2371 | #endif | |
2372 | break; | |
2373 | ||
2374 | case BFD_RELOC_RX_GPRELL: | |
2375 | val >>= 1; | |
2376 | case BFD_RELOC_RX_GPRELW: | |
2377 | val >>= 1; | |
2378 | case BFD_RELOC_RX_GPRELB: | |
2379 | #if RX_OPCODE_BIG_ENDIAN | |
2380 | op[1] = val & 0xff; | |
2381 | op[0] = (val >> 8) & 0xff; | |
2382 | #else | |
2383 | op[0] = val & 0xff; | |
2384 | op[1] = (val >> 8) & 0xff; | |
2385 | #endif | |
2386 | break; | |
2387 | ||
2388 | default: | |
2389 | as_bad (_("Unknown reloc in md_apply_fix: %s"), | |
2390 | bfd_get_reloc_code_name (f->fx_r_type)); | |
2391 | break; | |
2392 | } | |
2393 | ||
2394 | if (f->fx_addsy == NULL) | |
2395 | f->fx_done = 1; | |
2396 | } | |
2397 | ||
2398 | arelent ** | |
d4cb0ea0 | 2399 | tc_gen_reloc (asection * sec ATTRIBUTE_UNUSED, fixS * fixp) |
c7927a3c NC |
2400 | { |
2401 | static arelent * reloc[5]; | |
d4cb0ea0 | 2402 | bfd_boolean is_opcode = FALSE; |
c7927a3c NC |
2403 | |
2404 | if (fixp->fx_r_type == BFD_RELOC_NONE) | |
2405 | { | |
2406 | reloc[0] = NULL; | |
2407 | return reloc; | |
2408 | } | |
2409 | ||
2410 | if (fixp->fx_subsy | |
2411 | && S_GET_SEGMENT (fixp->fx_subsy) == absolute_section) | |
2412 | { | |
2413 | fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy); | |
2414 | fixp->fx_subsy = NULL; | |
2415 | } | |
2416 | ||
2417 | reloc[0] = (arelent *) xmalloc (sizeof (arelent)); | |
2418 | reloc[0]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2419 | * reloc[0]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
2420 | reloc[0]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2421 | reloc[0]->addend = fixp->fx_offset; | |
2422 | ||
e8ef21bf DD |
2423 | if (fixp->fx_r_type == BFD_RELOC_RX_32_OP |
2424 | && fixp->fx_subsy) | |
2425 | { | |
2426 | fixp->fx_r_type = BFD_RELOC_RX_DIFF; | |
d4cb0ea0 | 2427 | is_opcode = TRUE; |
e8ef21bf | 2428 | } |
d4cb0ea0 NC |
2429 | else if (sec) |
2430 | is_opcode = sec->flags & SEC_CODE; | |
2431 | ||
c7927a3c NC |
2432 | /* Certain BFD relocations cannot be translated directly into |
2433 | a single (non-Red Hat) RX relocation, but instead need | |
2434 | multiple RX relocations - handle them here. */ | |
2435 | switch (fixp->fx_r_type) | |
2436 | { | |
2437 | case BFD_RELOC_RX_DIFF: | |
2438 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2439 | ||
2440 | reloc[1] = (arelent *) xmalloc (sizeof (arelent)); | |
2441 | reloc[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2442 | * reloc[1]->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy); | |
2443 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2444 | reloc[1]->addend = 0; | |
2445 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2446 | ||
2447 | reloc[2] = (arelent *) xmalloc (sizeof (arelent)); | |
2448 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT); | |
2449 | reloc[2]->addend = 0; | |
2450 | reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2451 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2452 | ||
2453 | reloc[3] = (arelent *) xmalloc (sizeof (arelent)); | |
2454 | switch (fixp->fx_size) | |
2455 | { | |
2456 | case 1: | |
2457 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS8); | |
2458 | break; | |
2459 | case 2: | |
e8ef21bf DD |
2460 | if (!is_opcode && target_big_endian) |
2461 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16_REV); | |
d4cb0ea0 NC |
2462 | else if (is_opcode) |
2463 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16UL); | |
e8ef21bf DD |
2464 | else |
2465 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16); | |
c7927a3c NC |
2466 | break; |
2467 | case 4: | |
e8ef21bf DD |
2468 | if (!is_opcode && target_big_endian) |
2469 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32_REV); | |
2470 | else | |
2471 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32); | |
c7927a3c NC |
2472 | break; |
2473 | } | |
2474 | reloc[3]->addend = 0; | |
2475 | reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2476 | reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2477 | ||
2478 | reloc[4] = NULL; | |
2479 | break; | |
2480 | ||
2481 | case BFD_RELOC_RX_GPRELL: | |
2482 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2483 | ||
2484 | reloc[1] = (arelent *) xmalloc (sizeof (arelent)); | |
2485 | reloc[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2486 | if (gp_symbol == NULL) | |
2487 | { | |
2488 | if (symbol_table_frozen) | |
2489 | { | |
2490 | symbolS * gp; | |
2491 | ||
2492 | gp = symbol_find ("__gp"); | |
2493 | if (gp == NULL) | |
2494 | as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified")); | |
2495 | else | |
2496 | gp_symbol = symbol_get_bfdsym (gp); | |
2497 | } | |
2498 | else | |
2499 | gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp")); | |
2500 | } | |
2501 | * reloc[1]->sym_ptr_ptr = gp_symbol; | |
2502 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2503 | reloc[1]->addend = 0; | |
2504 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2505 | ||
2506 | reloc[2] = (arelent *) xmalloc (sizeof (arelent)); | |
2507 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT); | |
2508 | reloc[2]->addend = 0; | |
2509 | reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2510 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2511 | ||
2512 | reloc[3] = (arelent *) xmalloc (sizeof (arelent)); | |
2513 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16UL); | |
2514 | reloc[3]->addend = 0; | |
2515 | reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2516 | reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2517 | ||
2518 | reloc[4] = NULL; | |
2519 | break; | |
2520 | ||
2521 | case BFD_RELOC_RX_GPRELW: | |
2522 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2523 | ||
2524 | reloc[1] = (arelent *) xmalloc (sizeof (arelent)); | |
2525 | reloc[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2526 | if (gp_symbol == NULL) | |
2527 | { | |
2528 | if (symbol_table_frozen) | |
2529 | { | |
2530 | symbolS * gp; | |
2531 | ||
2532 | gp = symbol_find ("__gp"); | |
2533 | if (gp == NULL) | |
2534 | as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified")); | |
2535 | else | |
2536 | gp_symbol = symbol_get_bfdsym (gp); | |
2537 | } | |
2538 | else | |
2539 | gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp")); | |
2540 | } | |
2541 | * reloc[1]->sym_ptr_ptr = gp_symbol; | |
2542 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2543 | reloc[1]->addend = 0; | |
2544 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2545 | ||
2546 | reloc[2] = (arelent *) xmalloc (sizeof (arelent)); | |
2547 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT); | |
2548 | reloc[2]->addend = 0; | |
2549 | reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2550 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2551 | ||
2552 | reloc[3] = (arelent *) xmalloc (sizeof (arelent)); | |
2553 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16UW); | |
2554 | reloc[3]->addend = 0; | |
2555 | reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2556 | reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2557 | ||
2558 | reloc[4] = NULL; | |
2559 | break; | |
2560 | ||
2561 | case BFD_RELOC_RX_GPRELB: | |
2562 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2563 | ||
2564 | reloc[1] = (arelent *) xmalloc (sizeof (arelent)); | |
2565 | reloc[1]->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); | |
2566 | if (gp_symbol == NULL) | |
2567 | { | |
2568 | if (symbol_table_frozen) | |
2569 | { | |
2570 | symbolS * gp; | |
2571 | ||
2572 | gp = symbol_find ("__gp"); | |
2573 | if (gp == NULL) | |
2574 | as_bad (("unable to create __gp symbol: please re-assemble with the -msmall-data-limit option specified")); | |
2575 | else | |
2576 | gp_symbol = symbol_get_bfdsym (gp); | |
2577 | } | |
2578 | else | |
2579 | gp_symbol = symbol_get_bfdsym (symbol_find_or_make ("__gp")); | |
2580 | } | |
2581 | * reloc[1]->sym_ptr_ptr = gp_symbol; | |
2582 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2583 | reloc[1]->addend = 0; | |
2584 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2585 | ||
2586 | reloc[2] = (arelent *) xmalloc (sizeof (arelent)); | |
2587 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_SUBTRACT); | |
2588 | reloc[2]->addend = 0; | |
2589 | reloc[2]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2590 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2591 | ||
2592 | reloc[3] = (arelent *) xmalloc (sizeof (arelent)); | |
2593 | reloc[3]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS16U); | |
2594 | reloc[3]->addend = 0; | |
2595 | reloc[3]->sym_ptr_ptr = reloc[1]->sym_ptr_ptr; | |
2596 | reloc[3]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2597 | ||
2598 | reloc[4] = NULL; | |
2599 | break; | |
2600 | ||
9689e3a3 DD |
2601 | case BFD_RELOC_RX_NEG32: |
2602 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_SYM); | |
2603 | ||
2604 | reloc[1] = (arelent *) xmalloc (sizeof (arelent)); | |
2605 | reloc[1]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_OP_NEG); | |
2606 | reloc[1]->addend = 0; | |
2607 | reloc[1]->sym_ptr_ptr = reloc[0]->sym_ptr_ptr; | |
2608 | reloc[1]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2609 | ||
2610 | reloc[2] = (arelent *) xmalloc (sizeof (arelent)); | |
2611 | reloc[2]->howto = bfd_reloc_type_lookup (stdoutput, BFD_RELOC_RX_ABS32); | |
2612 | reloc[2]->addend = 0; | |
2613 | reloc[2]->sym_ptr_ptr = reloc[0]->sym_ptr_ptr; | |
2614 | reloc[2]->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
2615 | ||
2616 | reloc[3] = NULL; | |
2617 | break; | |
2618 | ||
c7927a3c NC |
2619 | default: |
2620 | reloc[0]->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
2621 | reloc[1] = NULL; | |
2622 | break; | |
2623 | } | |
2624 | ||
2625 | return reloc; | |
2626 | } | |
2627 | ||
2628 | /* Set the ELF specific flags. */ | |
2629 | ||
2630 | void | |
2631 | rx_elf_final_processing (void) | |
2632 | { | |
2633 | elf_elfheader (stdoutput)->e_flags |= elf_flags; | |
2634 | } | |
2635 | ||
2636 | /* Scan the current input line for occurances of Renesas | |
2637 | local labels and replace them with the GAS version. */ | |
2638 | ||
2639 | void | |
2640 | rx_start_line (void) | |
2641 | { | |
2642 | int in_double_quote = 0; | |
2643 | int in_single_quote = 0; | |
2644 | int done = 0; | |
2645 | char * p = input_line_pointer; | |
2646 | ||
2647 | /* Scan the line looking for question marks. Skip past quote enclosed regions. */ | |
2648 | do | |
2649 | { | |
2650 | switch (*p) | |
2651 | { | |
2652 | case '\n': | |
2653 | case 0: | |
2654 | done = 1; | |
2655 | break; | |
2656 | ||
2657 | case '"': | |
2658 | in_double_quote = ! in_double_quote; | |
2659 | break; | |
2660 | ||
2661 | case '\'': | |
2662 | in_single_quote = ! in_single_quote; | |
2663 | break; | |
2664 | ||
2665 | case '?': | |
2666 | if (in_double_quote || in_single_quote) | |
2667 | break; | |
2668 | ||
2669 | if (p[1] == ':') | |
2670 | *p = '1'; | |
2671 | else if (p[1] == '+') | |
2672 | { | |
2673 | p[0] = '1'; | |
2674 | p[1] = 'f'; | |
2675 | } | |
2676 | else if (p[1] == '-') | |
2677 | { | |
2678 | p[0] = '1'; | |
2679 | p[1] = 'b'; | |
2680 | } | |
2681 | break; | |
2682 | ||
2683 | default: | |
2684 | break; | |
2685 | } | |
2686 | ||
2687 | p ++; | |
2688 | } | |
2689 | while (! done); | |
2690 | } |