Commit | Line | Data |
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252b5132 | 1 | /* tc-mn10200.c -- Assembler code for the Matsushita 10200 |
310b5aa2 | 2 | Copyright (C) 1996, 1997, 1998, 1999 Free Software Foundation. |
252b5132 RH |
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 2, 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 | |
18 | the Free Software Foundation, 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include <stdio.h> | |
22 | #include <ctype.h> | |
23 | #include "as.h" | |
87271fa6 | 24 | #include "subsegs.h" |
252b5132 RH |
25 | #include "opcode/mn10200.h" |
26 | \f | |
27 | /* Structure to hold information about predefined registers. */ | |
28 | struct reg_name | |
29 | { | |
30 | const char *name; | |
31 | int value; | |
32 | }; | |
33 | ||
87271fa6 NC |
34 | /* Generic assembler global variables which must be defined by all |
35 | targets. */ | |
252b5132 | 36 | |
87271fa6 | 37 | /* Characters which always start a comment. */ |
252b5132 RH |
38 | const char comment_chars[] = "#"; |
39 | ||
40 | /* Characters which start a comment at the beginning of a line. */ | |
41 | const char line_comment_chars[] = ";#"; | |
42 | ||
87271fa6 | 43 | /* Characters which may be used to separate multiple commands on a |
252b5132 RH |
44 | single line. */ |
45 | const char line_separator_chars[] = ";"; | |
46 | ||
87271fa6 | 47 | /* Characters which are used to indicate an exponent in a floating |
252b5132 RH |
48 | point number. */ |
49 | const char EXP_CHARS[] = "eE"; | |
50 | ||
87271fa6 | 51 | /* Characters which mean that a number is a floating point constant, |
252b5132 RH |
52 | as in 0d1.0. */ |
53 | const char FLT_CHARS[] = "dD"; | |
54 | \f | |
252b5132 | 55 | const relax_typeS md_relax_table[] = { |
87271fa6 | 56 | /* bCC relaxing */ |
252b5132 RH |
57 | {0x81, -0x7e, 2, 1}, |
58 | {0x8004, -0x7ffb, 5, 2}, | |
59 | {0x800006, -0x7ffff9, 7, 0}, | |
87271fa6 | 60 | /* bCCx relaxing */ |
252b5132 RH |
61 | {0x81, -0x7e, 3, 4}, |
62 | {0x8004, -0x7ffb, 6, 5}, | |
63 | {0x800006, -0x7ffff9, 8, 0}, | |
87271fa6 | 64 | /* jsr relaxing */ |
252b5132 RH |
65 | {0x8004, -0x7ffb, 3, 7}, |
66 | {0x800006, -0x7ffff9, 5, 0}, | |
87271fa6 | 67 | /* jmp relaxing */ |
252b5132 RH |
68 | {0x81, -0x7e, 2, 9}, |
69 | {0x8004, -0x7ffb, 3, 10}, | |
70 | {0x800006, -0x7ffff9, 5, 0}, | |
71 | ||
72 | }; | |
87271fa6 NC |
73 | |
74 | /* Local functions. */ | |
252b5132 RH |
75 | static void mn10200_insert_operand PARAMS ((unsigned long *, unsigned long *, |
76 | const struct mn10200_operand *, | |
77 | offsetT, char *, unsigned, | |
78 | unsigned)); | |
79 | static unsigned long check_operand PARAMS ((unsigned long, | |
80 | const struct mn10200_operand *, | |
81 | offsetT)); | |
82 | static int reg_name_search PARAMS ((const struct reg_name *, int, const char *)); | |
83 | static boolean data_register_name PARAMS ((expressionS *expressionP)); | |
84 | static boolean address_register_name PARAMS ((expressionS *expressionP)); | |
85 | static boolean other_register_name PARAMS ((expressionS *expressionP)); | |
86 | ||
87271fa6 | 87 | /* Fixups. */ |
252b5132 RH |
88 | #define MAX_INSN_FIXUPS (5) |
89 | struct mn10200_fixup | |
90 | { | |
91 | expressionS exp; | |
92 | int opindex; | |
93 | bfd_reloc_code_real_type reloc; | |
94 | }; | |
95 | struct mn10200_fixup fixups[MAX_INSN_FIXUPS]; | |
96 | static int fc; | |
97 | \f | |
98 | const char *md_shortopts = ""; | |
99 | struct option md_longopts[] = { | |
100 | {NULL, no_argument, NULL, 0} | |
101 | }; | |
87271fa6 | 102 | size_t md_longopts_size = sizeof (md_longopts); |
252b5132 RH |
103 | |
104 | /* The target specific pseudo-ops which we support. */ | |
105 | const pseudo_typeS md_pseudo_table[] = | |
106 | { | |
107 | { NULL, NULL, 0 } | |
108 | }; | |
109 | ||
110 | /* Opcode hash table. */ | |
111 | static struct hash_control *mn10200_hash; | |
112 | ||
87271fa6 | 113 | /* This table is sorted. Suitable for searching by a binary search. */ |
252b5132 RH |
114 | static const struct reg_name data_registers[] = |
115 | { | |
116 | { "d0", 0 }, | |
117 | { "d1", 1 }, | |
118 | { "d2", 2 }, | |
119 | { "d3", 3 }, | |
120 | }; | |
87271fa6 NC |
121 | #define DATA_REG_NAME_CNT \ |
122 | (sizeof (data_registers) / sizeof (struct reg_name)) | |
252b5132 RH |
123 | |
124 | static const struct reg_name address_registers[] = | |
125 | { | |
126 | { "a0", 0 }, | |
127 | { "a1", 1 }, | |
128 | { "a2", 2 }, | |
129 | { "a3", 3 }, | |
130 | }; | |
87271fa6 NC |
131 | #define ADDRESS_REG_NAME_CNT \ |
132 | (sizeof (address_registers) / sizeof (struct reg_name)) | |
252b5132 RH |
133 | |
134 | static const struct reg_name other_registers[] = | |
135 | { | |
136 | { "mdr", 0 }, | |
137 | { "psw", 0 }, | |
138 | }; | |
87271fa6 NC |
139 | #define OTHER_REG_NAME_CNT \ |
140 | (sizeof (other_registers) / sizeof (struct reg_name)) | |
252b5132 RH |
141 | |
142 | /* reg_name_search does a binary search of the given register table | |
143 | to see if "name" is a valid regiter name. Returns the register | |
87271fa6 | 144 | number from the array on success, or -1 on failure. */ |
252b5132 RH |
145 | |
146 | static int | |
147 | reg_name_search (regs, regcount, name) | |
148 | const struct reg_name *regs; | |
149 | int regcount; | |
150 | const char *name; | |
151 | { | |
152 | int middle, low, high; | |
153 | int cmp; | |
154 | ||
155 | low = 0; | |
156 | high = regcount - 1; | |
157 | ||
158 | do | |
159 | { | |
160 | middle = (low + high) / 2; | |
161 | cmp = strcasecmp (name, regs[middle].name); | |
162 | if (cmp < 0) | |
163 | high = middle - 1; | |
164 | else if (cmp > 0) | |
165 | low = middle + 1; | |
87271fa6 NC |
166 | else |
167 | return regs[middle].value; | |
252b5132 RH |
168 | } |
169 | while (low <= high); | |
170 | return -1; | |
171 | } | |
172 | ||
252b5132 RH |
173 | /* Summary of register_name(). |
174 | * | |
175 | * in: Input_line_pointer points to 1st char of operand. | |
176 | * | |
177 | * out: A expressionS. | |
178 | * The operand may have been a register: in this case, X_op == O_register, | |
179 | * X_add_number is set to the register number, and truth is returned. | |
180 | * Input_line_pointer->(next non-blank) char after operand, or is in | |
181 | * its original state. | |
182 | */ | |
87271fa6 | 183 | |
252b5132 RH |
184 | static boolean |
185 | data_register_name (expressionP) | |
186 | expressionS *expressionP; | |
187 | { | |
188 | int reg_number; | |
189 | char *name; | |
190 | char *start; | |
191 | char c; | |
192 | ||
87271fa6 | 193 | /* Find the spelling of the operand. */ |
252b5132 RH |
194 | start = name = input_line_pointer; |
195 | ||
196 | c = get_symbol_end (); | |
197 | reg_number = reg_name_search (data_registers, DATA_REG_NAME_CNT, name); | |
198 | ||
87271fa6 NC |
199 | /* Look to see if it's in the register table. */ |
200 | if (reg_number >= 0) | |
252b5132 RH |
201 | { |
202 | expressionP->X_op = O_register; | |
203 | expressionP->X_add_number = reg_number; | |
204 | ||
87271fa6 | 205 | /* Make the rest nice. */ |
252b5132 RH |
206 | expressionP->X_add_symbol = NULL; |
207 | expressionP->X_op_symbol = NULL; | |
87271fa6 NC |
208 | |
209 | /* Put back the delimiting char. */ | |
210 | *input_line_pointer = c; | |
252b5132 RH |
211 | return true; |
212 | } | |
213 | else | |
214 | { | |
87271fa6 NC |
215 | /* Reset the line as if we had not done anything. */ |
216 | /* Put back the delimiting char. */ | |
217 | *input_line_pointer = c; | |
218 | ||
219 | /* Reset input_line pointer. */ | |
220 | input_line_pointer = start; | |
252b5132 RH |
221 | return false; |
222 | } | |
223 | } | |
224 | ||
225 | /* Summary of register_name(). | |
226 | * | |
227 | * in: Input_line_pointer points to 1st char of operand. | |
228 | * | |
229 | * out: A expressionS. | |
230 | * The operand may have been a register: in this case, X_op == O_register, | |
231 | * X_add_number is set to the register number, and truth is returned. | |
232 | * Input_line_pointer->(next non-blank) char after operand, or is in | |
233 | * its original state. | |
234 | */ | |
87271fa6 | 235 | |
252b5132 RH |
236 | static boolean |
237 | address_register_name (expressionP) | |
238 | expressionS *expressionP; | |
239 | { | |
240 | int reg_number; | |
241 | char *name; | |
242 | char *start; | |
243 | char c; | |
244 | ||
87271fa6 | 245 | /* Find the spelling of the operand. */ |
252b5132 RH |
246 | start = name = input_line_pointer; |
247 | ||
248 | c = get_symbol_end (); | |
249 | reg_number = reg_name_search (address_registers, ADDRESS_REG_NAME_CNT, name); | |
250 | ||
87271fa6 NC |
251 | /* Look to see if it's in the register table. */ |
252 | if (reg_number >= 0) | |
252b5132 RH |
253 | { |
254 | expressionP->X_op = O_register; | |
255 | expressionP->X_add_number = reg_number; | |
256 | ||
87271fa6 | 257 | /* Make the rest nice. */ |
252b5132 RH |
258 | expressionP->X_add_symbol = NULL; |
259 | expressionP->X_op_symbol = NULL; | |
87271fa6 NC |
260 | |
261 | /* Put back the delimiting char. */ | |
262 | *input_line_pointer = c; | |
252b5132 RH |
263 | return true; |
264 | } | |
265 | else | |
266 | { | |
87271fa6 NC |
267 | /* Reset the line as if we had not done anything. */ |
268 | /* Put back the delimiting char. */ | |
269 | *input_line_pointer = c; | |
270 | ||
271 | /* Reset input_line pointer. */ | |
272 | input_line_pointer = start; | |
252b5132 RH |
273 | return false; |
274 | } | |
275 | } | |
276 | ||
277 | /* Summary of register_name(). | |
278 | * | |
279 | * in: Input_line_pointer points to 1st char of operand. | |
280 | * | |
281 | * out: A expressionS. | |
282 | * The operand may have been a register: in this case, X_op == O_register, | |
283 | * X_add_number is set to the register number, and truth is returned. | |
284 | * Input_line_pointer->(next non-blank) char after operand, or is in | |
285 | * its original state. | |
286 | */ | |
87271fa6 | 287 | |
252b5132 RH |
288 | static boolean |
289 | other_register_name (expressionP) | |
290 | expressionS *expressionP; | |
291 | { | |
292 | int reg_number; | |
293 | char *name; | |
294 | char *start; | |
295 | char c; | |
296 | ||
87271fa6 | 297 | /* Find the spelling of the operand. */ |
252b5132 RH |
298 | start = name = input_line_pointer; |
299 | ||
300 | c = get_symbol_end (); | |
301 | reg_number = reg_name_search (other_registers, OTHER_REG_NAME_CNT, name); | |
302 | ||
87271fa6 NC |
303 | /* Look to see if it's in the register table. */ |
304 | if (reg_number >= 0) | |
252b5132 RH |
305 | { |
306 | expressionP->X_op = O_register; | |
307 | expressionP->X_add_number = reg_number; | |
308 | ||
87271fa6 | 309 | /* Make the rest nice. */ |
252b5132 RH |
310 | expressionP->X_add_symbol = NULL; |
311 | expressionP->X_op_symbol = NULL; | |
87271fa6 NC |
312 | |
313 | /* Put back the delimiting char. */ | |
314 | *input_line_pointer = c; | |
252b5132 RH |
315 | return true; |
316 | } | |
317 | else | |
318 | { | |
87271fa6 NC |
319 | /* Reset the line as if we had not done anything. */ |
320 | /* Put back the delimiting char. */ | |
321 | *input_line_pointer = c; | |
322 | ||
323 | /* Reset input_line pointer. */ | |
324 | input_line_pointer = start; | |
252b5132 RH |
325 | return false; |
326 | } | |
327 | } | |
328 | ||
329 | void | |
330 | md_show_usage (stream) | |
87271fa6 | 331 | FILE *stream; |
252b5132 | 332 | { |
87271fa6 | 333 | fprintf (stream, _("MN10200 options:\n\ |
252b5132 | 334 | none yet\n")); |
87271fa6 | 335 | } |
252b5132 RH |
336 | |
337 | int | |
338 | md_parse_option (c, arg) | |
339 | int c; | |
340 | char *arg; | |
341 | { | |
342 | return 0; | |
343 | } | |
344 | ||
345 | symbolS * | |
346 | md_undefined_symbol (name) | |
87271fa6 | 347 | char *name; |
252b5132 RH |
348 | { |
349 | return 0; | |
350 | } | |
351 | ||
352 | char * | |
353 | md_atof (type, litp, sizep) | |
87271fa6 NC |
354 | int type; |
355 | char *litp; | |
356 | int *sizep; | |
252b5132 RH |
357 | { |
358 | int prec; | |
359 | LITTLENUM_TYPE words[4]; | |
360 | char *t; | |
361 | int i; | |
362 | ||
363 | switch (type) | |
364 | { | |
365 | case 'f': | |
366 | prec = 2; | |
367 | break; | |
368 | ||
369 | case 'd': | |
370 | prec = 4; | |
371 | break; | |
372 | ||
373 | default: | |
374 | *sizep = 0; | |
375 | return _("bad call to md_atof"); | |
376 | } | |
87271fa6 | 377 | |
252b5132 RH |
378 | t = atof_ieee (input_line_pointer, type, words); |
379 | if (t) | |
380 | input_line_pointer = t; | |
381 | ||
382 | *sizep = prec * 2; | |
383 | ||
384 | for (i = prec - 1; i >= 0; i--) | |
385 | { | |
386 | md_number_to_chars (litp, (valueT) words[i], 2); | |
387 | litp += 2; | |
388 | } | |
389 | ||
390 | return NULL; | |
391 | } | |
392 | ||
252b5132 RH |
393 | void |
394 | md_convert_frag (abfd, sec, fragP) | |
87271fa6 NC |
395 | bfd *abfd; |
396 | asection *sec; | |
397 | fragS *fragP; | |
252b5132 RH |
398 | { |
399 | static unsigned long label_count = 0; | |
400 | char buf[40]; | |
401 | ||
402 | subseg_change (sec, 0); | |
403 | if (fragP->fr_subtype == 0) | |
404 | { | |
405 | fix_new (fragP, fragP->fr_fix + 1, 1, fragP->fr_symbol, | |
406 | fragP->fr_offset, 1, BFD_RELOC_8_PCREL); | |
407 | fragP->fr_var = 0; | |
408 | fragP->fr_fix += 2; | |
409 | } | |
410 | else if (fragP->fr_subtype == 1) | |
411 | { | |
412 | /* Reverse the condition of the first branch. */ | |
413 | int offset = fragP->fr_fix; | |
414 | int opcode = fragP->fr_literal[offset] & 0xff; | |
415 | ||
416 | switch (opcode) | |
417 | { | |
418 | case 0xe8: | |
419 | opcode = 0xe9; | |
420 | break; | |
421 | case 0xe9: | |
422 | opcode = 0xe8; | |
423 | break; | |
424 | case 0xe0: | |
425 | opcode = 0xe2; | |
426 | break; | |
427 | case 0xe2: | |
428 | opcode = 0xe0; | |
429 | break; | |
430 | case 0xe3: | |
431 | opcode = 0xe1; | |
432 | break; | |
433 | case 0xe1: | |
434 | opcode = 0xe3; | |
435 | break; | |
436 | case 0xe4: | |
437 | opcode = 0xe6; | |
438 | break; | |
439 | case 0xe6: | |
440 | opcode = 0xe4; | |
441 | break; | |
442 | case 0xe7: | |
443 | opcode = 0xe5; | |
444 | break; | |
445 | case 0xe5: | |
446 | opcode = 0xe7; | |
447 | break; | |
448 | default: | |
449 | abort (); | |
450 | } | |
451 | fragP->fr_literal[offset] = opcode; | |
452 | ||
453 | /* Create a fixup for the reversed conditional branch. */ | |
454 | sprintf (buf, ".%s_%d", FAKE_LABEL_NAME, label_count++); | |
455 | fix_new (fragP, fragP->fr_fix + 1, 1, | |
456 | symbol_new (buf, sec, 0, fragP->fr_next), | |
457 | fragP->fr_offset, 1, BFD_RELOC_8_PCREL); | |
458 | ||
459 | /* Now create the unconditional branch + fixup to the | |
460 | final target. */ | |
461 | fragP->fr_literal[offset + 2] = 0xfc; | |
462 | fix_new (fragP, fragP->fr_fix + 3, 2, fragP->fr_symbol, | |
463 | fragP->fr_offset, 1, BFD_RELOC_16_PCREL); | |
464 | fragP->fr_var = 0; | |
465 | fragP->fr_fix += 5; | |
466 | } | |
467 | else if (fragP->fr_subtype == 2) | |
468 | { | |
469 | /* Reverse the condition of the first branch. */ | |
470 | int offset = fragP->fr_fix; | |
471 | int opcode = fragP->fr_literal[offset] & 0xff; | |
472 | ||
473 | switch (opcode) | |
474 | { | |
475 | case 0xe8: | |
476 | opcode = 0xe9; | |
477 | break; | |
478 | case 0xe9: | |
479 | opcode = 0xe8; | |
480 | break; | |
481 | case 0xe0: | |
482 | opcode = 0xe2; | |
483 | break; | |
484 | case 0xe2: | |
485 | opcode = 0xe0; | |
486 | break; | |
487 | case 0xe3: | |
488 | opcode = 0xe1; | |
489 | break; | |
490 | case 0xe1: | |
491 | opcode = 0xe3; | |
492 | break; | |
493 | case 0xe4: | |
494 | opcode = 0xe6; | |
495 | break; | |
496 | case 0xe6: | |
497 | opcode = 0xe4; | |
498 | break; | |
499 | case 0xe7: | |
500 | opcode = 0xe5; | |
501 | break; | |
502 | case 0xe5: | |
503 | opcode = 0xe7; | |
504 | break; | |
505 | default: | |
506 | abort (); | |
507 | } | |
508 | fragP->fr_literal[offset] = opcode; | |
509 | ||
510 | /* Create a fixup for the reversed conditional branch. */ | |
511 | sprintf (buf, ".%s_%d", FAKE_LABEL_NAME, label_count++); | |
512 | fix_new (fragP, fragP->fr_fix + 1, 1, | |
513 | symbol_new (buf, sec, 0, fragP->fr_next), | |
514 | fragP->fr_offset, 1, BFD_RELOC_8_PCREL); | |
515 | ||
516 | /* Now create the unconditional branch + fixup to the | |
517 | final target. */ | |
518 | fragP->fr_literal[offset + 2] = 0xf4; | |
519 | fragP->fr_literal[offset + 3] = 0xe0; | |
520 | fix_new (fragP, fragP->fr_fix + 4, 4, fragP->fr_symbol, | |
521 | fragP->fr_offset, 1, BFD_RELOC_24_PCREL); | |
522 | fragP->fr_var = 0; | |
523 | fragP->fr_fix += 7; | |
524 | } | |
525 | else if (fragP->fr_subtype == 3) | |
526 | { | |
527 | fix_new (fragP, fragP->fr_fix + 2, 1, fragP->fr_symbol, | |
528 | fragP->fr_offset, 1, BFD_RELOC_8_PCREL); | |
529 | fragP->fr_var = 0; | |
530 | fragP->fr_fix += 3; | |
531 | } | |
532 | else if (fragP->fr_subtype == 4) | |
533 | { | |
534 | /* Reverse the condition of the first branch. */ | |
535 | int offset = fragP->fr_fix; | |
536 | int opcode = fragP->fr_literal[offset + 1] & 0xff; | |
537 | ||
538 | switch (opcode) | |
539 | { | |
540 | case 0xfc: | |
541 | opcode = 0xfd; | |
542 | break; | |
543 | case 0xfd: | |
544 | opcode = 0xfc; | |
545 | break; | |
546 | case 0xfe: | |
547 | opcode = 0xff; | |
548 | break; | |
549 | case 0xff: | |
550 | opcode = 0xfe; | |
551 | case 0xe8: | |
552 | opcode = 0xe9; | |
553 | break; | |
554 | case 0xe9: | |
555 | opcode = 0xe8; | |
556 | break; | |
557 | case 0xe0: | |
558 | opcode = 0xe2; | |
559 | break; | |
560 | case 0xe2: | |
561 | opcode = 0xe0; | |
562 | break; | |
563 | case 0xe3: | |
564 | opcode = 0xe1; | |
565 | break; | |
566 | case 0xe1: | |
567 | opcode = 0xe3; | |
568 | break; | |
569 | case 0xe4: | |
570 | opcode = 0xe6; | |
571 | break; | |
572 | case 0xe6: | |
573 | opcode = 0xe4; | |
574 | break; | |
575 | case 0xe7: | |
576 | opcode = 0xe5; | |
577 | break; | |
578 | case 0xe5: | |
579 | opcode = 0xe7; | |
580 | break; | |
581 | case 0xec: | |
582 | opcode = 0xed; | |
583 | break; | |
584 | case 0xed: | |
585 | opcode = 0xec; | |
586 | break; | |
587 | case 0xee: | |
588 | opcode = 0xef; | |
589 | break; | |
590 | case 0xef: | |
591 | opcode = 0xee; | |
592 | break; | |
593 | default: | |
594 | abort (); | |
595 | } | |
596 | fragP->fr_literal[offset + 1] = opcode; | |
597 | ||
598 | /* Create a fixup for the reversed conditional branch. */ | |
599 | sprintf (buf, ".%s_%d", FAKE_LABEL_NAME, label_count++); | |
600 | fix_new (fragP, fragP->fr_fix + 2, 1, | |
601 | symbol_new (buf, sec, 0, fragP->fr_next), | |
602 | fragP->fr_offset, 1, BFD_RELOC_8_PCREL); | |
603 | ||
604 | /* Now create the unconditional branch + fixup to the | |
605 | final target. */ | |
606 | fragP->fr_literal[offset + 3] = 0xfc; | |
607 | fix_new (fragP, fragP->fr_fix + 4, 2, fragP->fr_symbol, | |
608 | fragP->fr_offset, 1, BFD_RELOC_16_PCREL); | |
609 | fragP->fr_var = 0; | |
610 | fragP->fr_fix += 6; | |
611 | } | |
612 | else if (fragP->fr_subtype == 5) | |
613 | { | |
614 | /* Reverse the condition of the first branch. */ | |
615 | int offset = fragP->fr_fix; | |
616 | int opcode = fragP->fr_literal[offset + 1] & 0xff; | |
617 | ||
618 | switch (opcode) | |
619 | { | |
620 | case 0xfc: | |
621 | opcode = 0xfd; | |
622 | break; | |
623 | case 0xfd: | |
624 | opcode = 0xfc; | |
625 | break; | |
626 | case 0xfe: | |
627 | opcode = 0xff; | |
628 | break; | |
629 | case 0xff: | |
630 | opcode = 0xfe; | |
631 | case 0xe8: | |
632 | opcode = 0xe9; | |
633 | break; | |
634 | case 0xe9: | |
635 | opcode = 0xe8; | |
636 | break; | |
637 | case 0xe0: | |
638 | opcode = 0xe2; | |
639 | break; | |
640 | case 0xe2: | |
641 | opcode = 0xe0; | |
642 | break; | |
643 | case 0xe3: | |
644 | opcode = 0xe1; | |
645 | break; | |
646 | case 0xe1: | |
647 | opcode = 0xe3; | |
648 | break; | |
649 | case 0xe4: | |
650 | opcode = 0xe6; | |
651 | break; | |
652 | case 0xe6: | |
653 | opcode = 0xe4; | |
654 | break; | |
655 | case 0xe7: | |
656 | opcode = 0xe5; | |
657 | break; | |
658 | case 0xe5: | |
659 | opcode = 0xe7; | |
660 | break; | |
661 | case 0xec: | |
662 | opcode = 0xed; | |
663 | break; | |
664 | case 0xed: | |
665 | opcode = 0xec; | |
666 | break; | |
667 | case 0xee: | |
668 | opcode = 0xef; | |
669 | break; | |
670 | case 0xef: | |
671 | opcode = 0xee; | |
672 | break; | |
673 | default: | |
674 | abort (); | |
675 | } | |
676 | fragP->fr_literal[offset + 1] = opcode; | |
677 | ||
678 | /* Create a fixup for the reversed conditional branch. */ | |
679 | sprintf (buf, ".%s_%d", FAKE_LABEL_NAME, label_count++); | |
680 | fix_new (fragP, fragP->fr_fix + 2, 1, | |
681 | symbol_new (buf, sec, 0, fragP->fr_next), | |
682 | fragP->fr_offset, 1, BFD_RELOC_8_PCREL); | |
683 | ||
684 | /* Now create the unconditional branch + fixup to the | |
685 | final target. */ | |
686 | fragP->fr_literal[offset + 3] = 0xf4; | |
687 | fragP->fr_literal[offset + 4] = 0xe0; | |
688 | fix_new (fragP, fragP->fr_fix + 5, 4, fragP->fr_symbol, | |
689 | fragP->fr_offset, 1, BFD_RELOC_24_PCREL); | |
690 | fragP->fr_var = 0; | |
691 | fragP->fr_fix += 8; | |
692 | } | |
693 | else if (fragP->fr_subtype == 6) | |
694 | { | |
695 | fix_new (fragP, fragP->fr_fix + 1, 2, fragP->fr_symbol, | |
696 | fragP->fr_offset, 1, BFD_RELOC_16_PCREL); | |
697 | fragP->fr_var = 0; | |
698 | fragP->fr_fix += 3; | |
699 | } | |
700 | else if (fragP->fr_subtype == 7) | |
701 | { | |
702 | int offset = fragP->fr_fix; | |
703 | fragP->fr_literal[offset] = 0xf4; | |
704 | fragP->fr_literal[offset + 1] = 0xe1; | |
705 | ||
706 | fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol, | |
707 | fragP->fr_offset, 1, BFD_RELOC_24_PCREL); | |
708 | fragP->fr_var = 0; | |
709 | fragP->fr_fix += 5; | |
710 | } | |
711 | else if (fragP->fr_subtype == 8) | |
712 | { | |
713 | fragP->fr_literal[fragP->fr_fix] = 0xea; | |
714 | fix_new (fragP, fragP->fr_fix + 1, 1, fragP->fr_symbol, | |
715 | fragP->fr_offset, 1, BFD_RELOC_8_PCREL); | |
716 | fragP->fr_var = 0; | |
717 | fragP->fr_fix += 2; | |
718 | } | |
719 | else if (fragP->fr_subtype == 9) | |
720 | { | |
721 | int offset = fragP->fr_fix; | |
722 | fragP->fr_literal[offset] = 0xfc; | |
723 | ||
724 | fix_new (fragP, fragP->fr_fix + 1, 4, fragP->fr_symbol, | |
725 | fragP->fr_offset, 1, BFD_RELOC_16_PCREL); | |
726 | fragP->fr_var = 0; | |
727 | fragP->fr_fix += 3; | |
728 | } | |
729 | else if (fragP->fr_subtype == 10) | |
730 | { | |
731 | int offset = fragP->fr_fix; | |
732 | fragP->fr_literal[offset] = 0xf4; | |
733 | fragP->fr_literal[offset + 1] = 0xe0; | |
734 | ||
735 | fix_new (fragP, fragP->fr_fix + 2, 4, fragP->fr_symbol, | |
736 | fragP->fr_offset, 1, BFD_RELOC_24_PCREL); | |
737 | fragP->fr_var = 0; | |
738 | fragP->fr_fix += 5; | |
739 | } | |
740 | else | |
741 | abort (); | |
742 | } | |
743 | ||
744 | valueT | |
745 | md_section_align (seg, addr) | |
746 | asection *seg; | |
747 | valueT addr; | |
748 | { | |
749 | int align = bfd_get_section_alignment (stdoutput, seg); | |
750 | return ((addr + (1 << align) - 1) & (-1 << align)); | |
751 | } | |
752 | ||
753 | void | |
754 | md_begin () | |
755 | { | |
756 | char *prev_name = ""; | |
757 | register const struct mn10200_opcode *op; | |
758 | ||
87271fa6 | 759 | mn10200_hash = hash_new (); |
252b5132 RH |
760 | |
761 | /* Insert unique names into hash table. The MN10200 instruction set | |
762 | has many identical opcode names that have different opcodes based | |
763 | on the operands. This hash table then provides a quick index to | |
764 | the first opcode with a particular name in the opcode table. */ | |
765 | ||
766 | op = mn10200_opcodes; | |
767 | while (op->name) | |
768 | { | |
87271fa6 | 769 | if (strcmp (prev_name, op->name)) |
252b5132 RH |
770 | { |
771 | prev_name = (char *) op->name; | |
772 | hash_insert (mn10200_hash, op->name, (char *) op); | |
773 | } | |
774 | op++; | |
775 | } | |
776 | ||
777 | /* This is both a simplification (we don't have to write md_apply_fix) | |
778 | and support for future optimizations (branch shortening and similar | |
779 | stuff in the linker. */ | |
780 | linkrelax = 1; | |
781 | } | |
782 | ||
783 | void | |
87271fa6 | 784 | md_assemble (str) |
252b5132 RH |
785 | char *str; |
786 | { | |
787 | char *s; | |
788 | struct mn10200_opcode *opcode; | |
789 | struct mn10200_opcode *next_opcode; | |
790 | const unsigned char *opindex_ptr; | |
791 | int next_opindex, relaxable; | |
792 | unsigned long insn, extension, size = 0; | |
793 | char *f; | |
794 | int i; | |
795 | int match; | |
796 | ||
797 | /* Get the opcode. */ | |
87271fa6 | 798 | for (s = str; *s != '\0' && !isspace (*s); s++) |
252b5132 RH |
799 | ; |
800 | if (*s != '\0') | |
801 | *s++ = '\0'; | |
802 | ||
87271fa6 NC |
803 | /* Find the first opcode with the proper name. */ |
804 | opcode = (struct mn10200_opcode *) hash_find (mn10200_hash, str); | |
252b5132 RH |
805 | if (opcode == NULL) |
806 | { | |
807 | as_bad (_("Unrecognized opcode: `%s'"), str); | |
808 | return; | |
809 | } | |
810 | ||
811 | str = s; | |
812 | while (isspace (*str)) | |
813 | ++str; | |
814 | ||
815 | input_line_pointer = str; | |
816 | ||
87271fa6 | 817 | for (;;) |
252b5132 RH |
818 | { |
819 | const char *errmsg = NULL; | |
820 | int op_idx; | |
821 | char *hold; | |
822 | int extra_shift = 0; | |
823 | ||
824 | relaxable = 0; | |
825 | fc = 0; | |
826 | match = 0; | |
827 | next_opindex = 0; | |
828 | insn = opcode->opcode; | |
829 | extension = 0; | |
830 | for (op_idx = 1, opindex_ptr = opcode->operands; | |
831 | *opindex_ptr != 0; | |
832 | opindex_ptr++, op_idx++) | |
833 | { | |
834 | const struct mn10200_operand *operand; | |
835 | expressionS ex; | |
836 | ||
837 | if (next_opindex == 0) | |
838 | { | |
839 | operand = &mn10200_operands[*opindex_ptr]; | |
840 | } | |
841 | else | |
842 | { | |
843 | operand = &mn10200_operands[next_opindex]; | |
844 | next_opindex = 0; | |
845 | } | |
846 | ||
847 | errmsg = NULL; | |
848 | ||
849 | while (*str == ' ' || *str == ',') | |
850 | ++str; | |
851 | ||
852 | if (operand->flags & MN10200_OPERAND_RELAX) | |
853 | relaxable = 1; | |
854 | ||
87271fa6 | 855 | /* Gather the operand. */ |
252b5132 RH |
856 | hold = input_line_pointer; |
857 | input_line_pointer = str; | |
858 | ||
859 | if (operand->flags & MN10200_OPERAND_PAREN) | |
860 | { | |
861 | if (*input_line_pointer != ')' && *input_line_pointer != '(') | |
862 | { | |
863 | input_line_pointer = hold; | |
864 | str = hold; | |
865 | goto error; | |
866 | } | |
867 | input_line_pointer++; | |
868 | goto keep_going; | |
869 | } | |
870 | /* See if we can match the operands. */ | |
871 | else if (operand->flags & MN10200_OPERAND_DREG) | |
872 | { | |
873 | if (!data_register_name (&ex)) | |
874 | { | |
875 | input_line_pointer = hold; | |
876 | str = hold; | |
877 | goto error; | |
878 | } | |
879 | } | |
880 | else if (operand->flags & MN10200_OPERAND_AREG) | |
881 | { | |
882 | if (!address_register_name (&ex)) | |
883 | { | |
884 | input_line_pointer = hold; | |
885 | str = hold; | |
886 | goto error; | |
887 | } | |
888 | } | |
889 | else if (operand->flags & MN10200_OPERAND_PSW) | |
890 | { | |
891 | char *start = input_line_pointer; | |
892 | char c = get_symbol_end (); | |
893 | ||
894 | if (strcmp (start, "psw") != 0) | |
895 | { | |
896 | *input_line_pointer = c; | |
897 | input_line_pointer = hold; | |
898 | str = hold; | |
899 | goto error; | |
900 | } | |
901 | *input_line_pointer = c; | |
902 | goto keep_going; | |
903 | } | |
904 | else if (operand->flags & MN10200_OPERAND_MDR) | |
905 | { | |
906 | char *start = input_line_pointer; | |
907 | char c = get_symbol_end (); | |
908 | ||
909 | if (strcmp (start, "mdr") != 0) | |
910 | { | |
911 | *input_line_pointer = c; | |
912 | input_line_pointer = hold; | |
913 | str = hold; | |
914 | goto error; | |
915 | } | |
916 | *input_line_pointer = c; | |
917 | goto keep_going; | |
918 | } | |
919 | else if (data_register_name (&ex)) | |
920 | { | |
921 | input_line_pointer = hold; | |
922 | str = hold; | |
923 | goto error; | |
924 | } | |
925 | else if (address_register_name (&ex)) | |
926 | { | |
927 | input_line_pointer = hold; | |
928 | str = hold; | |
929 | goto error; | |
930 | } | |
931 | else if (other_register_name (&ex)) | |
932 | { | |
933 | input_line_pointer = hold; | |
934 | str = hold; | |
935 | goto error; | |
936 | } | |
937 | else if (*str == ')' || *str == '(') | |
938 | { | |
939 | input_line_pointer = hold; | |
940 | str = hold; | |
941 | goto error; | |
942 | } | |
943 | else | |
944 | { | |
945 | expression (&ex); | |
946 | } | |
947 | ||
87271fa6 | 948 | switch (ex.X_op) |
252b5132 RH |
949 | { |
950 | case O_illegal: | |
951 | errmsg = _("illegal operand"); | |
952 | goto error; | |
953 | case O_absent: | |
954 | errmsg = _("missing operand"); | |
955 | goto error; | |
956 | case O_register: | |
957 | if ((operand->flags | |
87271fa6 | 958 | & (MN10200_OPERAND_DREG | MN10200_OPERAND_AREG)) == 0) |
252b5132 RH |
959 | { |
960 | input_line_pointer = hold; | |
961 | str = hold; | |
962 | goto error; | |
963 | } | |
87271fa6 | 964 | |
252b5132 RH |
965 | if (opcode->format == FMT_2 || opcode->format == FMT_5) |
966 | extra_shift = 8; | |
967 | else if (opcode->format == FMT_3 || opcode->format == FMT_6 | |
968 | || opcode->format == FMT_7) | |
969 | extra_shift = 16; | |
970 | else | |
971 | extra_shift = 0; | |
87271fa6 | 972 | |
252b5132 RH |
973 | mn10200_insert_operand (&insn, &extension, operand, |
974 | ex.X_add_number, (char *) NULL, | |
975 | 0, extra_shift); | |
976 | ||
977 | break; | |
978 | ||
979 | case O_constant: | |
980 | /* If this operand can be promoted, and it doesn't | |
981 | fit into the allocated bitfield for this insn, | |
982 | then promote it (ie this opcode does not match). */ | |
983 | if (operand->flags | |
984 | & (MN10200_OPERAND_PROMOTE | MN10200_OPERAND_RELAX) | |
87271fa6 | 985 | && !check_operand (insn, operand, ex.X_add_number)) |
252b5132 RH |
986 | { |
987 | input_line_pointer = hold; | |
988 | str = hold; | |
989 | goto error; | |
990 | } | |
991 | ||
992 | mn10200_insert_operand (&insn, &extension, operand, | |
993 | ex.X_add_number, (char *) NULL, | |
994 | 0, 0); | |
995 | break; | |
996 | ||
997 | default: | |
998 | /* If this operand can be promoted, then this opcode didn't | |
999 | match since we can't know if it needed promotion! */ | |
1000 | if (operand->flags & MN10200_OPERAND_PROMOTE) | |
1001 | { | |
1002 | input_line_pointer = hold; | |
1003 | str = hold; | |
1004 | goto error; | |
1005 | } | |
1006 | ||
1007 | /* We need to generate a fixup for this expression. */ | |
1008 | if (fc >= MAX_INSN_FIXUPS) | |
1009 | as_fatal (_("too many fixups")); | |
1010 | fixups[fc].exp = ex; | |
1011 | fixups[fc].opindex = *opindex_ptr; | |
1012 | fixups[fc].reloc = BFD_RELOC_UNUSED; | |
1013 | ++fc; | |
1014 | break; | |
1015 | } | |
1016 | ||
1017 | keep_going: | |
1018 | str = input_line_pointer; | |
1019 | input_line_pointer = hold; | |
1020 | ||
1021 | while (*str == ' ' || *str == ',') | |
1022 | ++str; | |
1023 | ||
1024 | } | |
1025 | ||
1026 | /* Make sure we used all the operands! */ | |
1027 | if (*str != ',') | |
1028 | match = 1; | |
1029 | ||
1030 | error: | |
1031 | if (match == 0) | |
87271fa6 | 1032 | { |
252b5132 | 1033 | next_opcode = opcode + 1; |
87271fa6 | 1034 | if (!strcmp (next_opcode->name, opcode->name)) |
252b5132 RH |
1035 | { |
1036 | opcode = next_opcode; | |
1037 | continue; | |
1038 | } | |
87271fa6 | 1039 | |
252b5132 RH |
1040 | as_bad ("%s", errmsg); |
1041 | return; | |
87271fa6 | 1042 | } |
252b5132 RH |
1043 | break; |
1044 | } | |
87271fa6 | 1045 | |
252b5132 RH |
1046 | while (isspace (*str)) |
1047 | ++str; | |
1048 | ||
1049 | if (*str != '\0') | |
1050 | as_bad (_("junk at end of line: `%s'"), str); | |
1051 | ||
1052 | input_line_pointer = str; | |
1053 | ||
1054 | if (opcode->format == FMT_1) | |
1055 | size = 1; | |
1056 | else if (opcode->format == FMT_2 || opcode->format == FMT_4) | |
1057 | size = 2; | |
1058 | else if (opcode->format == FMT_3 || opcode->format == FMT_5) | |
1059 | size = 3; | |
1060 | else if (opcode->format == FMT_6) | |
1061 | size = 4; | |
1062 | else if (opcode->format == FMT_7) | |
1063 | size = 5; | |
1064 | else | |
1065 | abort (); | |
87271fa6 | 1066 | |
252b5132 RH |
1067 | /* Write out the instruction. */ |
1068 | ||
1069 | if (relaxable && fc > 0) | |
1070 | { | |
1071 | int type; | |
1072 | ||
87271fa6 | 1073 | /* bCC */ |
252b5132 RH |
1074 | if (size == 2 && opcode->opcode != 0xfc0000) |
1075 | { | |
1076 | /* Handle bra specially. Basically treat it like jmp so | |
1077 | that we automatically handle 8, 16 and 32 bit offsets | |
1078 | correctly as well as jumps to an undefined address. | |
1079 | ||
1080 | It is also important to not treat it like other bCC | |
1081 | instructions since the long forms of bra is different | |
1082 | from other bCC instructions. */ | |
87271fa6 NC |
1083 | if (opcode->opcode == 0xea00) |
1084 | type = 8; | |
252b5132 RH |
1085 | else |
1086 | type = 0; | |
1087 | } | |
87271fa6 | 1088 | /* jsr */ |
252b5132 RH |
1089 | else if (size == 3 && opcode->opcode == 0xfd0000) |
1090 | type = 6; | |
87271fa6 | 1091 | /* jmp */ |
252b5132 RH |
1092 | else if (size == 3 && opcode->opcode == 0xfc0000) |
1093 | type = 8; | |
87271fa6 | 1094 | /* bCCx */ |
252b5132 RH |
1095 | else |
1096 | type = 3; | |
1097 | ||
1098 | f = frag_var (rs_machine_dependent, 8, 8 - size, type, | |
1099 | fixups[0].exp.X_add_symbol, | |
1100 | fixups[0].exp.X_add_number, | |
1101 | (char *)fixups[0].opindex); | |
1102 | number_to_chars_bigendian (f, insn, size); | |
1103 | if (8 - size > 4) | |
1104 | { | |
1105 | number_to_chars_bigendian (f + size, 0, 4); | |
1106 | number_to_chars_bigendian (f + size + 4, 0, 8 - size - 4); | |
1107 | } | |
1108 | else | |
1109 | number_to_chars_bigendian (f + size, 0, 8 - size); | |
1110 | } | |
1111 | ||
1112 | else | |
1113 | { | |
1114 | f = frag_more (size); | |
1115 | ||
1116 | /* Oh, what a mess. The instruction is in big endian format, but | |
1117 | 16 and 24bit immediates are little endian! */ | |
1118 | if (opcode->format == FMT_3) | |
1119 | { | |
1120 | number_to_chars_bigendian (f, (insn >> 16) & 0xff, 1); | |
1121 | number_to_chars_littleendian (f + 1, insn & 0xffff, 2); | |
1122 | } | |
1123 | else if (opcode->format == FMT_6) | |
1124 | { | |
1125 | number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2); | |
1126 | number_to_chars_littleendian (f + 2, insn & 0xffff, 2); | |
1127 | } | |
1128 | else if (opcode->format == FMT_7) | |
1129 | { | |
1130 | number_to_chars_bigendian (f, (insn >> 16) & 0xffff, 2); | |
1131 | number_to_chars_littleendian (f + 2, insn & 0xffff, 2); | |
1132 | number_to_chars_littleendian (f + 4, extension & 0xff, 1); | |
1133 | } | |
1134 | else | |
1135 | { | |
1136 | number_to_chars_bigendian (f, insn, size > 4 ? 4 : size); | |
1137 | } | |
1138 | ||
1139 | /* Create any fixups. */ | |
1140 | for (i = 0; i < fc; i++) | |
1141 | { | |
1142 | const struct mn10200_operand *operand; | |
1143 | ||
1144 | operand = &mn10200_operands[fixups[i].opindex]; | |
1145 | if (fixups[i].reloc != BFD_RELOC_UNUSED) | |
1146 | { | |
1147 | reloc_howto_type *reloc_howto; | |
1148 | int size; | |
1149 | int offset; | |
1150 | fixS *fixP; | |
1151 | ||
87271fa6 NC |
1152 | reloc_howto = bfd_reloc_type_lookup (stdoutput, |
1153 | fixups[i].reloc); | |
252b5132 RH |
1154 | |
1155 | if (!reloc_howto) | |
87271fa6 NC |
1156 | abort (); |
1157 | ||
252b5132 RH |
1158 | size = bfd_get_reloc_size (reloc_howto); |
1159 | ||
1160 | if (size < 1 || size > 4) | |
87271fa6 | 1161 | abort (); |
252b5132 RH |
1162 | |
1163 | offset = 4 - size; | |
1164 | fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset, | |
1165 | size, | |
87271fa6 | 1166 | &fixups[i].exp, |
252b5132 RH |
1167 | reloc_howto->pc_relative, |
1168 | fixups[i].reloc); | |
1169 | ||
87271fa6 NC |
1170 | /* PC-relative offsets are from the first byte of the |
1171 | next instruction, not from the start of the current | |
1172 | instruction. */ | |
252b5132 RH |
1173 | if (reloc_howto->pc_relative) |
1174 | fixP->fx_offset += size; | |
1175 | } | |
1176 | else | |
1177 | { | |
1178 | int reloc, pcrel, reloc_size, offset; | |
1179 | fixS *fixP; | |
1180 | ||
1181 | reloc = BFD_RELOC_NONE; | |
1182 | /* How big is the reloc? Remember SPLIT relocs are | |
1183 | implicitly 32bits. */ | |
1184 | reloc_size = operand->bits; | |
1185 | ||
1186 | offset = size - reloc_size / 8; | |
1187 | ||
1188 | /* Is the reloc pc-relative? */ | |
1189 | pcrel = (operand->flags & MN10200_OPERAND_PCREL) != 0; | |
1190 | ||
252b5132 RH |
1191 | /* Choose a proper BFD relocation type. */ |
1192 | if (pcrel) | |
1193 | { | |
1194 | if (reloc_size == 8) | |
1195 | reloc = BFD_RELOC_8_PCREL; | |
1196 | else if (reloc_size == 24) | |
1197 | reloc = BFD_RELOC_24_PCREL; | |
1198 | else | |
1199 | abort (); | |
1200 | } | |
1201 | else | |
1202 | { | |
1203 | if (reloc_size == 32) | |
1204 | reloc = BFD_RELOC_32; | |
1205 | else if (reloc_size == 16) | |
1206 | reloc = BFD_RELOC_16; | |
1207 | else if (reloc_size == 8) | |
1208 | reloc = BFD_RELOC_8; | |
1209 | else if (reloc_size == 24) | |
1210 | reloc = BFD_RELOC_24; | |
1211 | else | |
1212 | abort (); | |
1213 | } | |
1214 | ||
87271fa6 NC |
1215 | /* Convert the size of the reloc into what fix_new_exp |
1216 | wants. */ | |
252b5132 RH |
1217 | reloc_size = reloc_size / 8; |
1218 | if (reloc_size == 8) | |
1219 | reloc_size = 0; | |
1220 | else if (reloc_size == 16) | |
1221 | reloc_size = 1; | |
1222 | else if (reloc_size == 32 || reloc_size == 24) | |
1223 | reloc_size = 2; | |
1224 | ||
1225 | fixP = fix_new_exp (frag_now, f - frag_now->fr_literal + offset, | |
1226 | reloc_size, &fixups[i].exp, pcrel, | |
1227 | ((bfd_reloc_code_real_type) reloc)); | |
1228 | ||
87271fa6 NC |
1229 | /* PC-relative offsets are from the first byte of the |
1230 | next instruction, not from the start of the current | |
1231 | instruction. */ | |
252b5132 RH |
1232 | if (pcrel) |
1233 | fixP->fx_offset += size; | |
1234 | } | |
1235 | } | |
1236 | } | |
1237 | } | |
1238 | ||
87271fa6 NC |
1239 | /* If while processing a fixup, a reloc really needs to be created |
1240 | Then it is done here. */ | |
252b5132 | 1241 | |
252b5132 RH |
1242 | arelent * |
1243 | tc_gen_reloc (seg, fixp) | |
1244 | asection *seg; | |
1245 | fixS *fixp; | |
1246 | { | |
1247 | arelent *reloc; | |
1248 | reloc = (arelent *) xmalloc (sizeof (arelent)); | |
1249 | ||
1250 | reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type); | |
1251 | if (reloc->howto == (reloc_howto_type *) NULL) | |
1252 | { | |
1253 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
87271fa6 NC |
1254 | _("reloc %d not supported by object file format"), |
1255 | (int) fixp->fx_r_type); | |
252b5132 RH |
1256 | return NULL; |
1257 | } | |
1258 | reloc->address = fixp->fx_frag->fr_address + fixp->fx_where; | |
1259 | ||
1260 | if (fixp->fx_addsy && fixp->fx_subsy) | |
1261 | { | |
1262 | if ((S_GET_SEGMENT (fixp->fx_addsy) != S_GET_SEGMENT (fixp->fx_subsy)) | |
1263 | || S_GET_SEGMENT (fixp->fx_addsy) == undefined_section) | |
1264 | { | |
1265 | as_bad_where (fixp->fx_file, fixp->fx_line, | |
1266 | "Difference of symbols in different sections is not supported"); | |
1267 | return NULL; | |
1268 | } | |
1269 | reloc->sym_ptr_ptr = &bfd_abs_symbol; | |
1270 | reloc->addend = (S_GET_VALUE (fixp->fx_addsy) | |
1271 | - S_GET_VALUE (fixp->fx_subsy) + fixp->fx_offset); | |
1272 | } | |
87271fa6 | 1273 | else |
252b5132 | 1274 | { |
310b5aa2 ILT |
1275 | reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *)); |
1276 | *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy); | |
252b5132 RH |
1277 | reloc->addend = fixp->fx_offset; |
1278 | } | |
1279 | return reloc; | |
1280 | } | |
1281 | ||
1282 | int | |
1283 | md_estimate_size_before_relax (fragp, seg) | |
1284 | fragS *fragp; | |
1285 | asection *seg; | |
1286 | { | |
1287 | if (fragp->fr_subtype == 0) | |
1288 | return 2; | |
1289 | if (fragp->fr_subtype == 3) | |
1290 | return 3; | |
1291 | if (fragp->fr_subtype == 6) | |
1292 | { | |
1293 | if (!S_IS_DEFINED (fragp->fr_symbol) | |
1294 | || seg != S_GET_SEGMENT (fragp->fr_symbol)) | |
1295 | { | |
1296 | fragp->fr_subtype = 7; | |
1297 | return 5; | |
1298 | } | |
1299 | return 3; | |
1300 | } | |
1301 | if (fragp->fr_subtype == 8) | |
1302 | { | |
1303 | if (!S_IS_DEFINED (fragp->fr_symbol)) | |
1304 | { | |
1305 | fragp->fr_subtype = 10; | |
1306 | return 5; | |
1307 | } | |
1308 | return 2; | |
1309 | } | |
87271fa6 | 1310 | } |
252b5132 RH |
1311 | |
1312 | long | |
1313 | md_pcrel_from (fixp) | |
1314 | fixS *fixp; | |
1315 | { | |
1316 | return fixp->fx_frag->fr_address; | |
1317 | #if 0 | |
87271fa6 | 1318 | if (fixp->fx_addsy != (symbolS *) NULL && !S_IS_DEFINED (fixp->fx_addsy)) |
252b5132 RH |
1319 | { |
1320 | /* The symbol is undefined. Let the linker figure it out. */ | |
1321 | return 0; | |
1322 | } | |
1323 | return fixp->fx_frag->fr_address + fixp->fx_where; | |
1324 | #endif | |
1325 | } | |
1326 | ||
1327 | int | |
1328 | md_apply_fix3 (fixp, valuep, seg) | |
1329 | fixS *fixp; | |
1330 | valueT *valuep; | |
1331 | segT seg; | |
1332 | { | |
1333 | /* We shouldn't ever get here because linkrelax is nonzero. */ | |
1334 | abort (); | |
1335 | fixp->fx_done = 1; | |
1336 | return 0; | |
1337 | } | |
1338 | ||
1339 | /* Insert an operand value into an instruction. */ | |
1340 | ||
1341 | static void | |
1342 | mn10200_insert_operand (insnp, extensionp, operand, val, file, line, shift) | |
1343 | unsigned long *insnp; | |
1344 | unsigned long *extensionp; | |
1345 | const struct mn10200_operand *operand; | |
1346 | offsetT val; | |
1347 | char *file; | |
1348 | unsigned int line; | |
1349 | unsigned int shift; | |
1350 | { | |
1351 | /* No need to check 24 or 32bit operands for a bit. */ | |
1352 | if (operand->bits < 24 | |
1353 | && (operand->flags & MN10200_OPERAND_NOCHECK) == 0) | |
1354 | { | |
1355 | long min, max; | |
1356 | offsetT test; | |
1357 | ||
1358 | if ((operand->flags & MN10200_OPERAND_SIGNED) != 0) | |
1359 | { | |
1360 | max = (1 << (operand->bits - 1)) - 1; | |
1361 | min = - (1 << (operand->bits - 1)); | |
1362 | } | |
1363 | else | |
87271fa6 NC |
1364 | { |
1365 | max = (1 << operand->bits) - 1; | |
1366 | min = 0; | |
1367 | } | |
252b5132 RH |
1368 | |
1369 | test = val; | |
1370 | ||
252b5132 RH |
1371 | if (test < (offsetT) min || test > (offsetT) max) |
1372 | { | |
1373 | const char *err = | |
1374 | _("operand out of range (%s not between %ld and %ld)"); | |
1375 | char buf[100]; | |
1376 | ||
1377 | sprint_value (buf, test); | |
1378 | if (file == (char *) NULL) | |
1379 | as_warn (err, buf, min, max); | |
1380 | else | |
1381 | as_warn_where (file, line, err, buf, min, max); | |
1382 | } | |
1383 | } | |
1384 | ||
1385 | if ((operand->flags & MN10200_OPERAND_EXTENDED) == 0) | |
1386 | { | |
1387 | *insnp |= (((long) val & ((1 << operand->bits) - 1)) | |
1388 | << (operand->shift + shift)); | |
1389 | ||
1390 | if ((operand->flags & MN10200_OPERAND_REPEATED) != 0) | |
1391 | *insnp |= (((long) val & ((1 << operand->bits) - 1)) | |
1392 | << (operand->shift + shift + 2)); | |
1393 | } | |
1394 | else | |
1395 | { | |
1396 | *extensionp |= (val >> 16) & 0xff; | |
1397 | *insnp |= val & 0xffff; | |
1398 | } | |
1399 | } | |
1400 | ||
1401 | static unsigned long | |
1402 | check_operand (insn, operand, val) | |
1403 | unsigned long insn; | |
1404 | const struct mn10200_operand *operand; | |
1405 | offsetT val; | |
1406 | { | |
1407 | /* No need to check 24bit or 32bit operands for a bit. */ | |
1408 | if (operand->bits < 24 | |
1409 | && (operand->flags & MN10200_OPERAND_NOCHECK) == 0) | |
1410 | { | |
1411 | long min, max; | |
1412 | offsetT test; | |
1413 | ||
1414 | if ((operand->flags & MN10200_OPERAND_SIGNED) != 0) | |
1415 | { | |
1416 | max = (1 << (operand->bits - 1)) - 1; | |
1417 | min = - (1 << (operand->bits - 1)); | |
1418 | } | |
1419 | else | |
87271fa6 NC |
1420 | { |
1421 | max = (1 << operand->bits) - 1; | |
1422 | min = 0; | |
1423 | } | |
252b5132 RH |
1424 | |
1425 | test = val; | |
1426 | ||
252b5132 RH |
1427 | if (test < (offsetT) min || test > (offsetT) max) |
1428 | return 0; | |
1429 | else | |
1430 | return 1; | |
1431 | } | |
1432 | return 1; | |
1433 | } |