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