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fecd2382 RP |
1 | /* tc-sparc.c -- Assemble for the SPARC |
2 | Copyright (C) 1989, 1990, 1991 Free Software Foundation, Inc. | |
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 | |
6321e9ea | 8 | the Free Software Foundation; either version 2, or (at your option) |
fecd2382 RP |
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, 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
19 | ||
20 | /* static const char rcsid[] = "$Id$"; */ | |
21 | ||
22 | #include <stdio.h> | |
23 | #include <ctype.h> | |
24 | ||
25 | #include "as.h" | |
26 | ||
27 | /* careful, this file includes data *declarations* */ | |
28 | #include "sparc-opcode.h" | |
29 | ||
30 | void md_begin(); | |
31 | void md_end(); | |
32 | void md_number_to_chars(); | |
33 | void md_assemble(); | |
34 | char *md_atof(); | |
35 | void md_convert_frag(); | |
36 | void md_create_short_jump(); | |
37 | void md_create_long_jump(); | |
38 | int md_estimate_size_before_relax(); | |
39 | void md_ri_to_chars(); | |
40 | symbolS *md_undefined_symbol(); | |
41 | static void sparc_ip(); | |
42 | ||
839df5c3 RP |
43 | static enum sparc_architecture current_architecture = v6; |
44 | static int architecture_requested = 0; | |
45 | static int warn_on_bump = 1; | |
46 | ||
fecd2382 RP |
47 | const relax_typeS md_relax_table[] = { |
48 | 0 }; | |
49 | ||
50 | /* handle of the OPCODE hash table */ | |
51 | static struct hash_control *op_hash = NULL; | |
52 | ||
53 | static void s_seg(), s_proc(), s_data1(), s_reserve(), s_common(); | |
54 | extern void s_globl(), s_long(), s_short(), s_space(), cons(); | |
55 | extern void s_align_bytes(), s_ignore(); | |
56 | ||
57 | const pseudo_typeS md_pseudo_table[] = { | |
58 | { "align", s_align_bytes, 0 }, /* Defaulting is invalid (0) */ | |
59 | { "common", s_common, 0 }, | |
60 | { "global", s_globl, 0 }, | |
61 | { "half", cons, 2 }, | |
62 | { "optim", s_ignore, 0 }, | |
63 | { "proc", s_proc, 0 }, | |
64 | { "reserve", s_reserve, 0 }, | |
65 | { "seg", s_seg, 0 }, | |
66 | { "skip", s_space, 0 }, | |
67 | { "word", cons, 4 }, | |
68 | { NULL, 0, 0 }, | |
69 | }; | |
70 | ||
839df5c3 RP |
71 | const int md_short_jump_size = 4; |
72 | const int md_long_jump_size = 4; | |
73 | const int md_reloc_size = 12; /* Size of relocation record */ | |
fecd2382 RP |
74 | |
75 | /* This array holds the chars that always start a comment. If the | |
76 | pre-processor is disabled, these aren't very useful */ | |
839df5c3 | 77 | const char comment_chars[] = "!"; /* JF removed '|' from comment_chars */ |
fecd2382 RP |
78 | |
79 | /* This array holds the chars that only start a comment at the beginning of | |
80 | a line. If the line seems to have the form '# 123 filename' | |
81 | .line and .file directives will appear in the pre-processed output */ | |
82 | /* Note that input_file.c hand checks for '#' at the beginning of the | |
83 | first line of the input file. This is because the compiler outputs | |
84 | #NO_APP at the beginning of its output. */ | |
839df5c3 RP |
85 | /* Also note that comments started like this one will always |
86 | work if '/' isn't otherwise defined. */ | |
87 | const char line_comment_chars[] = "#"; | |
fecd2382 RP |
88 | |
89 | /* Chars that can be used to separate mant from exp in floating point nums */ | |
839df5c3 | 90 | const char EXP_CHARS[] = "eE"; |
fecd2382 RP |
91 | |
92 | /* Chars that mean this number is a floating point constant */ | |
93 | /* As in 0f12.456 */ | |
94 | /* or 0d1.2345e12 */ | |
839df5c3 | 95 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; |
fecd2382 RP |
96 | |
97 | /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be | |
98 | changed in read.c . Ideally it shouldn't have to know about it at all, | |
99 | but nothing is ideal around here. | |
100 | */ | |
101 | ||
102 | static unsigned char octal[256]; | |
103 | #define isoctal(c) octal[c] | |
104 | static unsigned char toHex[256]; | |
105 | ||
fecd2382 RP |
106 | struct sparc_it { |
107 | char *error; | |
108 | unsigned long opcode; | |
109 | struct nlist *nlistp; | |
110 | expressionS exp; | |
111 | int pcrel; | |
112 | enum reloc_type reloc; | |
113 | } the_insn, set_insn; | |
114 | ||
115 | #ifdef __STDC__ | |
116 | #if 0 | |
117 | static void print_insn(struct sparc_it *insn); | |
118 | #endif | |
119 | static int getExpression(char *str); | |
120 | #else | |
121 | #if 0 | |
122 | static void print_insn(); | |
123 | #endif | |
124 | static int getExpression(); | |
125 | #endif | |
126 | static char *expr_end; | |
127 | static int special_case; | |
128 | ||
129 | /* | |
130 | * Instructions that require wierd handling because they're longer than | |
131 | * 4 bytes. | |
132 | */ | |
133 | #define SPECIAL_CASE_SET 1 | |
134 | #define SPECIAL_CASE_FDIV 2 | |
135 | ||
136 | /* | |
137 | * sort of like s_lcomm | |
138 | * | |
139 | */ | |
140 | static void s_reserve() { | |
141 | char *name; | |
142 | char c; | |
143 | char *p; | |
144 | int temp; | |
145 | symbolS *symbolP; | |
146 | ||
147 | name = input_line_pointer; | |
148 | c = get_symbol_end(); | |
149 | p = input_line_pointer; | |
150 | *p = c; | |
151 | SKIP_WHITESPACE(); | |
152 | if (* input_line_pointer != ',') { | |
153 | as_bad("Expected comma after name"); | |
154 | ignore_rest_of_line(); | |
155 | return; | |
156 | } | |
157 | input_line_pointer ++; | |
158 | if ((temp = get_absolute_expression()) < 0) { | |
159 | as_bad("BSS length (%d.) <0! Ignored.", temp); | |
160 | ignore_rest_of_line(); | |
161 | return; | |
162 | } | |
163 | *p = 0; | |
164 | symbolP = symbol_find_or_make(name); | |
165 | *p = c; | |
166 | if (strncmp(input_line_pointer, ",\"bss\"", 6) != 0) { | |
167 | as_bad("bad .reserve segment: `%s'", input_line_pointer); | |
168 | return; | |
169 | } | |
170 | input_line_pointer += 6; | |
171 | if (S_GET_OTHER(symbolP) == 0 | |
172 | && S_GET_DESC(symbolP) == 0 | |
173 | && ((S_GET_TYPE(symbolP) == N_BSS | |
174 | && S_GET_VALUE(symbolP) == local_bss_counter) | |
175 | || !S_IS_DEFINED(symbolP))) { | |
176 | S_SET_VALUE(symbolP, local_bss_counter); | |
177 | S_SET_SEGMENT(symbolP, SEG_BSS); | |
178 | symbolP->sy_frag = & bss_address_frag; | |
179 | local_bss_counter += temp; | |
180 | } else { | |
181 | as_warn("Ignoring attempt to re-define symbol from %d. to %d.", | |
182 | S_GET_VALUE(symbolP), local_bss_counter); | |
183 | } | |
184 | demand_empty_rest_of_line(); | |
185 | return; | |
186 | } /* s_reserve() */ | |
187 | ||
188 | static void s_common() { | |
189 | register char *name; | |
190 | register char c; | |
191 | register char *p; | |
192 | register int temp; | |
193 | register symbolS * symbolP; | |
194 | ||
195 | name = input_line_pointer; | |
196 | c = get_symbol_end(); | |
197 | /* just after name is now '\0' */ | |
198 | p = input_line_pointer; | |
199 | *p = c; | |
200 | SKIP_WHITESPACE(); | |
201 | if (* input_line_pointer != ',') { | |
202 | as_bad("Expected comma after symbol-name"); | |
203 | ignore_rest_of_line(); | |
204 | return; | |
205 | } | |
206 | input_line_pointer ++; /* skip ',' */ | |
207 | if ((temp = get_absolute_expression ()) < 0) { | |
208 | as_bad(".COMMon length (%d.) <0! Ignored.", temp); | |
209 | ignore_rest_of_line(); | |
210 | return; | |
211 | } | |
212 | *p = 0; | |
213 | symbolP = symbol_find_or_make(name); | |
214 | *p = c; | |
215 | if (S_IS_DEFINED(symbolP)) { | |
216 | as_bad("Ignoring attempt to re-define symbol"); | |
217 | ignore_rest_of_line(); | |
218 | return; | |
219 | } | |
220 | if (S_GET_VALUE(symbolP) != 0) { | |
221 | if (S_GET_VALUE(symbolP) != temp) { | |
222 | as_warn("Length of .comm \"%s\" is already %d. Not changed to %d.", | |
223 | S_GET_NAME(symbolP), S_GET_VALUE(symbolP), temp); | |
224 | } | |
225 | } else { | |
226 | S_SET_VALUE(symbolP, temp); | |
227 | S_SET_EXTERNAL(symbolP); | |
228 | } | |
229 | know(symbolP->sy_frag == &zero_address_frag); | |
230 | if (strncmp(input_line_pointer, ",\"bss\"", 6) != 0 | |
231 | && strncmp(input_line_pointer, ",\"data\"", 7) != 0) { | |
232 | p=input_line_pointer; | |
233 | while(*p && *p!='\n') | |
234 | p++; | |
235 | c= *p; | |
236 | *p='\0'; | |
237 | as_bad("bad .common segment: `%s'", input_line_pointer); | |
238 | *p=c; | |
239 | return; | |
240 | } | |
241 | input_line_pointer += 6 + (input_line_pointer[2] == 'd'); /* Skip either */ | |
242 | demand_empty_rest_of_line(); | |
243 | return; | |
244 | } /* s_common() */ | |
245 | ||
246 | static void s_seg() { | |
247 | ||
248 | if (strncmp(input_line_pointer, "\"text\"", 6) == 0) { | |
249 | input_line_pointer += 6; | |
250 | s_text(); | |
251 | return; | |
252 | } | |
253 | if (strncmp(input_line_pointer, "\"data\"", 6) == 0) { | |
254 | input_line_pointer += 6; | |
255 | s_data(); | |
256 | return; | |
257 | } | |
258 | if (strncmp(input_line_pointer, "\"data1\"", 7) == 0) { | |
259 | input_line_pointer += 7; | |
260 | s_data1(); | |
261 | return; | |
262 | } | |
263 | if (strncmp(input_line_pointer, "\"bss\"", 5) == 0) { | |
264 | input_line_pointer += 5; | |
265 | /* We only support 2 segments -- text and data -- for now, so | |
266 | things in the "bss segment" will have to go into data for now. | |
267 | You can still allocate SEG_BSS stuff with .lcomm or .reserve. */ | |
268 | subseg_new(SEG_DATA, 255); /* FIXME-SOMEDAY */ | |
269 | return; | |
270 | } | |
271 | as_bad("Unknown segment type"); | |
272 | demand_empty_rest_of_line(); | |
273 | return; | |
274 | } /* s_seg() */ | |
275 | ||
276 | static void s_data1() { | |
277 | subseg_new(SEG_DATA, 1); | |
278 | demand_empty_rest_of_line(); | |
279 | return; | |
280 | } /* s_data1() */ | |
281 | ||
282 | static void s_proc() { | |
283 | extern char is_end_of_line[]; | |
284 | ||
285 | while (!is_end_of_line[*input_line_pointer]) { | |
286 | ++input_line_pointer; | |
287 | } | |
288 | ++input_line_pointer; | |
289 | return; | |
290 | } /* s_proc() */ | |
291 | ||
292 | /* This function is called once, at assembler startup time. It should | |
293 | set up all the tables, etc. that the MD part of the assembler will need. */ | |
294 | void md_begin() { | |
295 | register char *retval = NULL; | |
296 | int lose = 0; | |
297 | register unsigned int i = 0; | |
298 | ||
299 | op_hash = hash_new(); | |
300 | if (op_hash == NULL) | |
301 | as_fatal("Virtual memory exhausted"); | |
302 | ||
303 | while (i < NUMOPCODES) { | |
304 | const char *name = sparc_opcodes[i].name; | |
305 | retval = hash_insert(op_hash, name, &sparc_opcodes[i]); | |
306 | if(retval != NULL && *retval != '\0') { | |
307 | fprintf (stderr, "internal error: can't hash `%s': %s\n", | |
308 | sparc_opcodes[i].name, retval); | |
309 | lose = 1; | |
310 | } | |
311 | do | |
312 | { | |
313 | if (sparc_opcodes[i].match & sparc_opcodes[i].lose) { | |
314 | fprintf (stderr, "internal error: losing opcode: `%s' \"%s\"\n", | |
315 | sparc_opcodes[i].name, sparc_opcodes[i].args); | |
316 | lose = 1; | |
317 | } | |
318 | ++i; | |
319 | } while (i < NUMOPCODES | |
320 | && !strcmp(sparc_opcodes[i].name, name)); | |
321 | } | |
322 | ||
323 | if (lose) | |
324 | as_fatal("Broken assembler. No assembly attempted."); | |
325 | ||
326 | for (i = '0'; i < '8'; ++i) | |
327 | octal[i] = 1; | |
328 | for (i = '0'; i <= '9'; ++i) | |
329 | toHex[i] = i - '0'; | |
330 | for (i = 'a'; i <= 'f'; ++i) | |
331 | toHex[i] = i + 10 - 'a'; | |
332 | for (i = 'A'; i <= 'F'; ++i) | |
333 | toHex[i] = i + 10 - 'A'; | |
334 | } /* md_begin() */ | |
335 | ||
336 | void md_end() { | |
337 | return; | |
338 | } /* md_end() */ | |
339 | ||
340 | void md_assemble(str) | |
341 | char *str; | |
342 | { | |
343 | char *toP; | |
344 | int rsd; | |
345 | ||
346 | know(str); | |
347 | sparc_ip(str); | |
348 | ||
349 | /* See if "set" operand is absolute and small; skip sethi if so. */ | |
350 | if (special_case == SPECIAL_CASE_SET && the_insn.exp.X_seg == SEG_ABSOLUTE) { | |
351 | if (the_insn.exp.X_add_number >= -(1<<12) | |
352 | && the_insn.exp.X_add_number < (1<<12)) { | |
353 | the_insn.opcode = 0x80102000 /* or %g0,imm,... */ | |
354 | | (the_insn.opcode & 0x3E000000) /* dest reg */ | |
355 | | (the_insn.exp.X_add_number & 0x1FFF); /* imm */ | |
356 | special_case = 0; /* No longer special */ | |
357 | the_insn.reloc = NO_RELOC; /* No longer relocated */ | |
358 | } | |
359 | } | |
360 | ||
361 | toP = frag_more(4); | |
362 | /* put out the opcode */ | |
363 | md_number_to_chars(toP, the_insn.opcode, 4); | |
364 | ||
365 | /* put out the symbol-dependent stuff */ | |
366 | if (the_insn.reloc != NO_RELOC) { | |
367 | fix_new(frag_now, /* which frag */ | |
368 | (toP - frag_now->fr_literal), /* where */ | |
369 | 4, /* size */ | |
370 | the_insn.exp.X_add_symbol, | |
371 | the_insn.exp.X_subtract_symbol, | |
372 | the_insn.exp.X_add_number, | |
373 | the_insn.pcrel, | |
374 | the_insn.reloc); | |
375 | } | |
376 | switch (special_case) { | |
377 | ||
378 | case SPECIAL_CASE_SET: | |
379 | special_case = 0; | |
380 | assert(the_insn.reloc == RELOC_HI22); | |
381 | /* See if "set" operand has no low-order bits; skip OR if so. */ | |
382 | if (the_insn.exp.X_seg == SEG_ABSOLUTE | |
383 | && ((the_insn.exp.X_add_number & 0x3FF) == 0)) | |
384 | return; | |
385 | toP = frag_more(4); | |
386 | rsd = (the_insn.opcode >> 25) & 0x1f; | |
387 | the_insn.opcode = 0x80102000 | (rsd << 25) | (rsd << 14); | |
388 | md_number_to_chars(toP, the_insn.opcode, 4); | |
389 | fix_new(frag_now, /* which frag */ | |
390 | (toP - frag_now->fr_literal), /* where */ | |
391 | 4, /* size */ | |
392 | the_insn.exp.X_add_symbol, | |
393 | the_insn.exp.X_subtract_symbol, | |
394 | the_insn.exp.X_add_number, | |
395 | the_insn.pcrel, | |
396 | RELOC_LO10); | |
397 | return; | |
398 | ||
399 | case SPECIAL_CASE_FDIV: | |
400 | /* According to information leaked from Sun, the "fdiv" instructions | |
401 | on early SPARC machines would produce incorrect results sometimes. | |
402 | The workaround is to add an fmovs of the destination register to | |
403 | itself just after the instruction. This was true on machines | |
404 | with Weitek 1165 float chips, such as the Sun-4/260 and /280. */ | |
405 | special_case = 0; | |
406 | assert(the_insn.reloc == NO_RELOC); | |
407 | toP = frag_more(4); | |
408 | rsd = (the_insn.opcode >> 25) & 0x1f; | |
409 | the_insn.opcode = 0x81A00020 | (rsd << 25) | rsd; /* fmovs dest,dest */ | |
410 | md_number_to_chars(toP, the_insn.opcode, 4); | |
411 | return; | |
412 | ||
413 | case 0: | |
414 | return; | |
415 | ||
416 | default: | |
417 | abort(); | |
418 | } | |
419 | } /* md_assemble() */ | |
420 | ||
421 | static void sparc_ip(str) | |
422 | char *str; | |
423 | { | |
839df5c3 | 424 | char *error_message = ""; |
fecd2382 RP |
425 | char *s; |
426 | const char *args; | |
427 | char c; | |
428 | struct sparc_opcode *insn; | |
429 | char *argsStart; | |
430 | unsigned long opcode; | |
431 | unsigned int mask; | |
432 | int match = 0; | |
433 | int comma = 0; | |
434 | ||
435 | for (s = str; islower(*s) || (*s >= '0' && *s <= '3'); ++s) | |
436 | ; | |
437 | switch (*s) { | |
438 | ||
439 | case '\0': | |
440 | break; | |
441 | ||
442 | case ',': | |
443 | comma = 1; | |
444 | ||
445 | /*FALLTHROUGH */ | |
446 | ||
447 | case ' ': | |
448 | *s++ = '\0'; | |
449 | break; | |
450 | ||
451 | default: | |
452 | as_bad("Unknown opcode: `%s'", str); | |
453 | exit(1); | |
454 | } | |
455 | if ((insn = (struct sparc_opcode *) hash_find(op_hash, str)) == NULL) { | |
456 | as_bad("Unknown opcode: `%s'", str); | |
457 | return; | |
458 | } | |
459 | if (comma) { | |
460 | *--s = ','; | |
461 | } | |
462 | argsStart = s; | |
463 | for (;;) { | |
464 | opcode = insn->match; | |
465 | bzero(&the_insn, sizeof(the_insn)); | |
466 | the_insn.reloc = NO_RELOC; | |
467 | ||
468 | /* | |
469 | * Build the opcode, checking as we go to make | |
470 | * sure that the operands match | |
471 | */ | |
472 | for (args = insn->args; ; ++args) { | |
473 | switch (*args) { | |
474 | ||
839df5c3 RP |
475 | case 'M': |
476 | case 'm': | |
477 | if (strncmp(s, "%asr", 4) == 0) { | |
478 | s += 4; | |
479 | ||
480 | if (isdigit(*s)) { | |
481 | long num = 0; | |
482 | ||
483 | while (isdigit(*s)) { | |
484 | num = num*10 + *s-'0'; | |
485 | ++s; | |
486 | } | |
487 | ||
488 | if (num < 16 || 31 < num) { | |
489 | error_message = ": asr number must be between 15 and 31"; | |
490 | goto error; | |
491 | } /* out of range */ | |
492 | ||
493 | opcode |= (*args == 'M' ? RS1(num) : RD(num)); | |
494 | continue; | |
495 | } else { | |
496 | error_message = ": expecting %asrN"; | |
497 | goto error; | |
498 | } /* if %asr followed by a number. */ | |
499 | ||
500 | } /* if %asr */ | |
501 | break; | |
502 | ||
6321e9ea | 503 | /* start-sanitize-v9 */ |
839df5c3 | 504 | #ifndef NO_V9 |
6321e9ea RP |
505 | case 'I': |
506 | the_insn.reloc = RELOC_11; | |
507 | goto immediate; | |
508 | ||
839df5c3 | 509 | case 'k': |
6321e9ea | 510 | the_insn.reloc = RELOC_WDISP2_14; |
839df5c3 RP |
511 | the_insn.pcrel = 1; |
512 | goto immediate; | |
513 | ||
6321e9ea RP |
514 | case 'G': |
515 | the_insn.reloc = RELOC_WDISP19; | |
839df5c3 RP |
516 | the_insn.pcrel = 1; |
517 | goto immediate; | |
518 | ||
519 | case 'N': | |
520 | if (*s == 'p' && s[1] == 'n') { | |
521 | s += 2; | |
522 | continue; | |
523 | } | |
524 | break; | |
525 | ||
526 | case 'T': | |
527 | if (*s == 'p' && s[1] == 't') { | |
528 | s += 2; | |
529 | continue; | |
530 | } | |
531 | break; | |
532 | ||
533 | case 'Y': | |
534 | if (strncmp(s, "%amr", 4) == 0) { | |
535 | s += 4; | |
536 | continue; | |
537 | } | |
538 | break; | |
6321e9ea RP |
539 | |
540 | case 'z': | |
541 | if (*s == ' ') { | |
542 | ++s; | |
543 | } | |
544 | if (strncmp(s, "icc", 3) == 0) { | |
545 | s += 3; | |
546 | continue; | |
547 | } | |
548 | break; | |
549 | ||
550 | case 'Z': | |
551 | if (*s == ' ') { | |
552 | ++s; | |
553 | } | |
554 | if (strncmp(s, "xcc", 3) == 0) { | |
555 | s += 3; | |
556 | continue; | |
557 | } | |
558 | break; | |
559 | ||
560 | case '6': | |
561 | if (*s == ' ') { | |
562 | ++s; | |
563 | } | |
564 | if (strncmp(s, "fcc0", 4) == 0) { | |
565 | s += 4; | |
566 | continue; | |
567 | } | |
568 | break; | |
569 | ||
570 | case '7': | |
571 | if (*s == ' ') { | |
572 | ++s; | |
573 | } | |
574 | if (strncmp(s, "fcc1", 4) == 0) { | |
575 | s += 4; | |
576 | continue; | |
577 | } | |
578 | break; | |
579 | ||
580 | case '8': | |
581 | if (*s == ' ') { | |
582 | ++s; | |
583 | } | |
584 | if (strncmp(s, "fcc2", 4) == 0) { | |
585 | s += 4; | |
586 | continue; | |
587 | } | |
588 | break; | |
589 | ||
590 | case '9': | |
591 | if (*s == ' ') { | |
592 | ++s; | |
593 | } | |
594 | if (strncmp(s, "fcc3", 4) == 0) { | |
595 | s += 4; | |
596 | continue; | |
597 | } | |
598 | break; | |
599 | ||
600 | case 'P': | |
601 | if (strncmp(s, "%pc", 3) == 0) { | |
602 | s += 3; | |
603 | continue; | |
604 | } | |
605 | break; | |
606 | ||
607 | case 'E': | |
608 | if (strncmp(s, "%modes", 6) == 0) { | |
609 | s += 6; | |
610 | continue; | |
611 | } | |
612 | break; | |
613 | ||
614 | case 'W': | |
615 | if (strncmp(s, "%tick", 5) == 0) { | |
616 | s += 5; | |
617 | continue; | |
618 | } | |
619 | break; | |
839df5c3 | 620 | #endif /* NO_V9 */ |
6321e9ea | 621 | /* end-sanitize-v9 */ |
839df5c3 | 622 | |
fecd2382 RP |
623 | case '\0': /* end of args */ |
624 | if (*s == '\0') { | |
625 | match = 1; | |
626 | } | |
627 | break; | |
628 | ||
629 | case '+': | |
630 | if (*s == '+') { | |
631 | ++s; | |
632 | continue; | |
633 | } | |
634 | if (*s == '-') { | |
635 | continue; | |
636 | } | |
637 | break; | |
638 | ||
639 | case '[': /* these must match exactly */ | |
640 | case ']': | |
641 | case ',': | |
642 | case ' ': | |
643 | if (*s++ == *args) | |
644 | continue; | |
645 | break; | |
646 | ||
647 | case '#': /* must be at least one digit */ | |
648 | if (isdigit(*s++)) { | |
649 | while (isdigit(*s)) { | |
650 | ++s; | |
651 | } | |
652 | continue; | |
653 | } | |
654 | break; | |
655 | ||
656 | case 'C': /* coprocessor state register */ | |
657 | if (strncmp(s, "%csr", 4) == 0) { | |
658 | s += 4; | |
659 | continue; | |
660 | } | |
661 | break; | |
662 | ||
663 | case 'b': /* next operand is a coprocessor register */ | |
664 | case 'c': | |
665 | case 'D': | |
666 | if (*s++ == '%' && *s++ == 'c' && isdigit(*s)) { | |
667 | mask = *s++; | |
668 | if (isdigit(*s)) { | |
669 | mask = 10 * (mask - '0') + (*s++ - '0'); | |
670 | if (mask >= 32) { | |
671 | break; | |
672 | } | |
673 | } else { | |
674 | mask -= '0'; | |
675 | } | |
676 | switch (*args) { | |
677 | ||
678 | case 'b': | |
679 | opcode |= mask << 14; | |
680 | continue; | |
681 | ||
682 | case 'c': | |
683 | opcode |= mask; | |
684 | continue; | |
685 | ||
686 | case 'D': | |
687 | opcode |= mask << 25; | |
688 | continue; | |
689 | } | |
690 | } | |
691 | break; | |
692 | ||
693 | case 'r': /* next operand must be a register */ | |
694 | case '1': | |
695 | case '2': | |
696 | case 'd': | |
697 | if (*s++ == '%') { | |
698 | switch (c = *s++) { | |
699 | ||
700 | case 'f': /* frame pointer */ | |
701 | if (*s++ == 'p') { | |
702 | mask = 0x1e; | |
703 | break; | |
704 | } | |
705 | goto error; | |
706 | ||
707 | case 'g': /* global register */ | |
708 | if (isoctal(c = *s++)) { | |
709 | mask = c - '0'; | |
710 | break; | |
711 | } | |
712 | goto error; | |
713 | ||
714 | case 'i': /* in register */ | |
715 | if (isoctal(c = *s++)) { | |
716 | mask = c - '0' + 24; | |
717 | break; | |
718 | } | |
719 | goto error; | |
720 | ||
721 | case 'l': /* local register */ | |
722 | if (isoctal(c = *s++)) { | |
723 | mask= (c - '0' + 16) ; | |
724 | break; | |
725 | } | |
726 | goto error; | |
727 | ||
728 | case 'o': /* out register */ | |
729 | if (isoctal(c = *s++)) { | |
730 | mask= (c - '0' + 8) ; | |
731 | break; | |
732 | } | |
733 | goto error; | |
734 | ||
735 | case 's': /* stack pointer */ | |
736 | if (*s++ == 'p') { | |
737 | mask= 0xe; | |
738 | break; | |
739 | } | |
740 | goto error; | |
741 | ||
742 | case 'r': /* any register */ | |
743 | if (!isdigit(c = *s++)) { | |
744 | goto error; | |
745 | } | |
746 | /* FALLTHROUGH */ | |
747 | case '0': case '1': case '2': case '3': case '4': | |
748 | case '5': case '6': case '7': case '8': case '9': | |
749 | if (isdigit(*s)) { | |
750 | if ((c = 10 * (c - '0') + (*s++ - '0')) >= 32) { | |
751 | goto error; | |
752 | } | |
753 | } else { | |
754 | c -= '0'; | |
755 | } | |
756 | mask= c; | |
757 | break; | |
758 | ||
759 | default: | |
760 | goto error; | |
761 | } | |
762 | /* | |
763 | * Got the register, now figure out where | |
764 | * it goes in the opcode. | |
765 | */ | |
766 | switch (*args) { | |
767 | ||
768 | case '1': | |
769 | opcode |= mask << 14; | |
770 | continue; | |
771 | ||
772 | case '2': | |
773 | opcode |= mask; | |
774 | continue; | |
775 | ||
776 | case 'd': | |
777 | opcode |= mask << 25; | |
778 | continue; | |
779 | ||
780 | case 'r': | |
781 | opcode |= (mask << 25) | (mask << 14); | |
782 | continue; | |
783 | } | |
784 | } | |
785 | break; | |
786 | ||
6321e9ea RP |
787 | /* start-sanitize-v9 */ |
788 | #ifndef NO_V9 | |
789 | case 'j': | |
790 | #endif /* NO_V9 */ | |
791 | /* end-sanitize-v9 */ | |
792 | case 'e': /* next operand is a floating point register */ | |
fecd2382 RP |
793 | case 'f': |
794 | case 'g': | |
795 | if (*s++ == '%' && *s++ == 'f' && isdigit(*s)) { | |
796 | mask = *s++; | |
797 | if (isdigit(*s)) { | |
798 | mask = 10 * (mask - '0') + (*s++ - '0'); | |
799 | if (mask >= 32) { | |
800 | break; | |
801 | } | |
802 | } else { | |
803 | mask -= '0'; | |
804 | } | |
805 | switch (*args) { | |
806 | ||
807 | case 'e': | |
6321e9ea | 808 | opcode |= RS1(mask); |
fecd2382 RP |
809 | continue; |
810 | ||
811 | case 'f': | |
6321e9ea | 812 | opcode |= RS2(mask); |
fecd2382 RP |
813 | continue; |
814 | ||
815 | case 'g': | |
6321e9ea RP |
816 | opcode |= RD(mask); |
817 | continue; | |
818 | /* start-sanitize-v9 */ | |
819 | #ifndef NO_V9 | |
820 | case 'j': | |
821 | opcode |= (mask & 0x1f) << 9; | |
fecd2382 | 822 | continue; |
6321e9ea RP |
823 | #endif /* NO_V9 */ |
824 | /* end-sanitize-v9 */ | |
fecd2382 RP |
825 | } |
826 | } | |
827 | break; | |
828 | ||
829 | case 'F': | |
830 | if (strncmp(s, "%fsr", 4) == 0) { | |
831 | s += 4; | |
832 | continue; | |
833 | } | |
834 | break; | |
835 | ||
6321e9ea | 836 | case 'h': /* high 22 bits */ |
fecd2382 RP |
837 | the_insn.reloc = RELOC_HI22; |
838 | goto immediate; | |
839 | ||
6321e9ea | 840 | case 'l': /* 22 bit PC relative immediate */ |
fecd2382 RP |
841 | the_insn.reloc = RELOC_WDISP22; |
842 | the_insn.pcrel = 1; | |
843 | goto immediate; | |
844 | ||
6321e9ea | 845 | case 'L': /* 30 bit immediate */ |
fecd2382 RP |
846 | the_insn.reloc = RELOC_WDISP30; |
847 | the_insn.pcrel = 1; | |
848 | goto immediate; | |
849 | ||
850 | case 'i': /* 13 bit immediate */ | |
851 | the_insn.reloc = RELOC_BASE13; | |
852 | ||
853 | /*FALLTHROUGH */ | |
854 | ||
855 | immediate: | |
856 | if(*s==' ') | |
857 | s++; | |
858 | if (*s == '%') { | |
859 | if ((c = s[1]) == 'h' && s[2] == 'i') { | |
860 | the_insn.reloc = RELOC_HI22; | |
861 | s+=3; | |
862 | } else if (c == 'l' && s[2] == 'o') { | |
863 | the_insn.reloc = RELOC_LO10; | |
864 | s+=3; | |
865 | } else | |
866 | break; | |
867 | } | |
868 | /* Note that if the getExpression() fails, we will still have | |
869 | created U entries in the symbol table for the 'symbols' | |
870 | in the input string. Try not to create U symbols for | |
871 | registers, etc. */ | |
872 | { | |
873 | /* This stuff checks to see if the expression ends | |
874 | in +%reg If it does, it removes the register from | |
875 | the expression, and re-sets 's' to point to the | |
876 | right place */ | |
877 | ||
878 | char *s1; | |
879 | ||
880 | for(s1=s;*s1 && *s1!=','&& *s1!=']';s1++) | |
881 | ; | |
882 | ||
883 | if(s1!=s && isdigit(s1[-1])) { | |
884 | if(s1[-2]=='%' && s1[-3]=='+') { | |
885 | s1-=3; | |
886 | *s1='\0'; | |
887 | (void)getExpression(s); | |
888 | *s1='+'; | |
889 | s=s1; | |
890 | continue; | |
891 | } else if(strchr("goli0123456789",s1[-2]) && s1[-3]=='%' && s1[-4]=='+') { | |
892 | s1-=4; | |
893 | *s1='\0'; | |
894 | (void)getExpression(s); | |
895 | *s1='+'; | |
896 | s=s1; | |
897 | continue; | |
898 | } | |
899 | } | |
900 | } | |
901 | (void)getExpression(s); | |
902 | s = expr_end; | |
903 | continue; | |
904 | ||
905 | case 'a': | |
906 | if (*s++ == 'a') { | |
907 | opcode |= ANNUL; | |
908 | continue; | |
909 | } | |
910 | break; | |
911 | ||
912 | case 'A': /* alternate space */ | |
913 | if (isdigit(*s)) { | |
914 | long num; | |
915 | ||
916 | num=0; | |
917 | while (isdigit(*s)) { | |
918 | num= num*10 + *s-'0'; | |
919 | ++s; | |
920 | } | |
921 | opcode |= num<<5; | |
922 | continue; | |
923 | } | |
924 | break; | |
925 | /* abort(); */ | |
926 | ||
927 | case 'p': | |
928 | if (strncmp(s, "%psr", 4) == 0) { | |
929 | s += 4; | |
930 | continue; | |
931 | } | |
932 | break; | |
933 | ||
934 | case 'q': /* floating point queue */ | |
935 | if (strncmp(s, "%fq", 3) == 0) { | |
936 | s += 3; | |
937 | continue; | |
938 | } | |
939 | break; | |
940 | ||
941 | case 'Q': /* coprocessor queue */ | |
942 | if (strncmp(s, "%cq", 3) == 0) { | |
943 | s += 3; | |
944 | continue; | |
945 | } | |
946 | break; | |
947 | ||
948 | case 'S': | |
949 | if (strcmp(str, "set") == 0) { | |
950 | special_case = SPECIAL_CASE_SET; | |
951 | continue; | |
952 | } else if (strncmp(str, "fdiv", 4) == 0) { | |
953 | special_case = SPECIAL_CASE_FDIV; | |
954 | continue; | |
955 | } | |
956 | break; | |
957 | ||
958 | case 't': | |
959 | if (strncmp(s, "%tbr", 4) != 0) | |
960 | break; | |
961 | s += 4; | |
962 | continue; | |
963 | ||
964 | case 'w': | |
965 | if (strncmp(s, "%wim", 4) != 0) | |
966 | break; | |
967 | s += 4; | |
968 | continue; | |
969 | ||
970 | case 'y': | |
971 | if (strncmp(s, "%y", 2) != 0) | |
972 | break; | |
973 | s += 2; | |
974 | continue; | |
975 | ||
976 | default: | |
977 | abort(); | |
8fb36078 | 978 | } /* switch on arg code */ |
fecd2382 | 979 | break; |
8fb36078 | 980 | } /* for each arg that we expect */ |
fecd2382 RP |
981 | error: |
982 | if (match == 0) { | |
983 | /* Args don't match. */ | |
984 | if (((unsigned) (&insn[1] - sparc_opcodes)) < NUMOPCODES | |
985 | && !strcmp(insn->name, insn[1].name)) { | |
986 | ++insn; | |
987 | s = argsStart; | |
988 | continue; | |
839df5c3 RP |
989 | } else { |
990 | as_bad("Illegal operands%s", error_message); | |
991 | return; | |
fecd2382 | 992 | } |
839df5c3 RP |
993 | } else { |
994 | if (insn->architecture > current_architecture) { | |
995 | if (current_architecture != cypress | |
996 | && (!architecture_requested || warn_on_bump)) { | |
997 | ||
998 | if (warn_on_bump) { | |
999 | as_warn("architecture bumped from \"%s\" to \"%s\" on \"%s\"", | |
1000 | architecture_pname[current_architecture], | |
1001 | architecture_pname[insn->architecture], | |
1002 | str); | |
1003 | } /* if warning */ | |
1004 | ||
1005 | current_architecture = insn->architecture; | |
1006 | } else { | |
1007 | as_bad("architecture mismatch on \"%s\" (\"%s\"). current architecture is \"%s\"", | |
1008 | str, | |
1009 | architecture_pname[insn->architecture], | |
1010 | architecture_pname[current_architecture]); | |
1011 | return; | |
1012 | } /* if bump ok else error */ | |
1013 | } /* if architecture higher */ | |
1014 | } /* if no match */ | |
1015 | ||
fecd2382 | 1016 | break; |
839df5c3 RP |
1017 | } /* forever looking for a match */ |
1018 | ||
fecd2382 RP |
1019 | the_insn.opcode = opcode; |
1020 | return; | |
1021 | } /* sparc_ip() */ | |
1022 | ||
1023 | static int getExpression(str) | |
1024 | char *str; | |
1025 | { | |
1026 | char *save_in; | |
1027 | segT seg; | |
1028 | ||
1029 | save_in = input_line_pointer; | |
1030 | input_line_pointer = str; | |
1031 | switch (seg = expression(&the_insn.exp)) { | |
1032 | ||
1033 | case SEG_ABSOLUTE: | |
1034 | case SEG_TEXT: | |
1035 | case SEG_DATA: | |
1036 | case SEG_BSS: | |
1037 | case SEG_UNKNOWN: | |
1038 | case SEG_DIFFERENCE: | |
1039 | case SEG_BIG: | |
1040 | case SEG_ABSENT: | |
1041 | break; | |
1042 | ||
1043 | default: | |
1044 | the_insn.error = "bad segment"; | |
1045 | expr_end = input_line_pointer; | |
1046 | input_line_pointer=save_in; | |
1047 | return 1; | |
1048 | } | |
1049 | expr_end = input_line_pointer; | |
1050 | input_line_pointer = save_in; | |
1051 | return 0; | |
1052 | } /* getExpression() */ | |
1053 | ||
1054 | ||
1055 | /* | |
1056 | This is identical to the md_atof in m68k.c. I think this is right, | |
1057 | but I'm not sure. | |
1058 | ||
1059 | Turn a string in input_line_pointer into a floating point constant of type | |
1060 | type, and store the appropriate bytes in *litP. The number of LITTLENUMS | |
1061 | emitted is stored in *sizeP . An error message is returned, or NULL on OK. | |
1062 | */ | |
1063 | ||
1064 | /* Equal to MAX_PRECISION in atof-ieee.c */ | |
1065 | #define MAX_LITTLENUMS 6 | |
1066 | ||
1067 | char *md_atof(type,litP,sizeP) | |
1068 | char type; | |
1069 | char *litP; | |
1070 | int *sizeP; | |
1071 | { | |
1072 | int prec; | |
1073 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
1074 | LITTLENUM_TYPE *wordP; | |
1075 | char *t; | |
1076 | char *atof_ieee(); | |
1077 | ||
1078 | switch(type) { | |
1079 | ||
1080 | case 'f': | |
1081 | case 'F': | |
1082 | case 's': | |
1083 | case 'S': | |
1084 | prec = 2; | |
1085 | break; | |
1086 | ||
1087 | case 'd': | |
1088 | case 'D': | |
1089 | case 'r': | |
1090 | case 'R': | |
1091 | prec = 4; | |
1092 | break; | |
1093 | ||
1094 | case 'x': | |
1095 | case 'X': | |
1096 | prec = 6; | |
1097 | break; | |
1098 | ||
1099 | case 'p': | |
1100 | case 'P': | |
1101 | prec = 6; | |
1102 | break; | |
1103 | ||
1104 | default: | |
1105 | *sizeP=0; | |
1106 | return "Bad call to MD_ATOF()"; | |
1107 | } | |
1108 | t=atof_ieee(input_line_pointer,type,words); | |
1109 | if(t) | |
1110 | input_line_pointer=t; | |
1111 | *sizeP=prec * sizeof(LITTLENUM_TYPE); | |
1112 | for(wordP=words;prec--;) { | |
1113 | md_number_to_chars(litP,(long)(*wordP++),sizeof(LITTLENUM_TYPE)); | |
1114 | litP+=sizeof(LITTLENUM_TYPE); | |
1115 | } | |
1116 | return ""; /* Someone should teach Dean about null pointers */ | |
1117 | } /* md_atof() */ | |
1118 | ||
1119 | /* | |
1120 | * Write out big-endian. | |
1121 | */ | |
1122 | void md_number_to_chars(buf,val,n) | |
1123 | char *buf; | |
1124 | long val; | |
1125 | int n; | |
1126 | { | |
1127 | ||
1128 | switch(n) { | |
1129 | ||
1130 | case 4: | |
1131 | *buf++ = val >> 24; | |
1132 | *buf++ = val >> 16; | |
1133 | case 2: | |
1134 | *buf++ = val >> 8; | |
1135 | case 1: | |
1136 | *buf = val; | |
1137 | break; | |
1138 | ||
1139 | default: | |
1140 | abort(); | |
1141 | } | |
1142 | return; | |
1143 | } /* md_number_to_chars() */ | |
1144 | ||
1145 | /* Apply a fixS to the frags, now that we know the value it ought to | |
1146 | hold. */ | |
1147 | ||
1148 | void md_apply_fix(fixP, val) | |
1149 | fixS *fixP; | |
1150 | long val; | |
1151 | { | |
1152 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; | |
1153 | ||
1154 | assert(fixP->fx_size == 4); | |
1155 | assert(fixP->fx_r_type < NO_RELOC); | |
1156 | ||
1157 | fixP->fx_addnumber = val; /* Remember value for emit_reloc */ | |
1158 | ||
1159 | /* | |
1160 | * This is a hack. There should be a better way to | |
1161 | * handle this. | |
1162 | */ | |
1163 | if (fixP->fx_r_type == RELOC_WDISP30 && fixP->fx_addsy) { | |
1164 | val += fixP->fx_where + fixP->fx_frag->fr_address; | |
1165 | } | |
1166 | ||
1167 | switch (fixP->fx_r_type) { | |
1168 | ||
1169 | case RELOC_32: | |
1170 | buf[0] = 0; /* val >> 24; */ | |
1171 | buf[1] = 0; /* val >> 16; */ | |
1172 | buf[2] = 0; /* val >> 8; */ | |
1173 | buf[3] = 0; /* val; */ | |
1174 | break; | |
1175 | ||
1176 | #if 0 | |
1177 | case RELOC_8: /* These don't seem to ever be needed. */ | |
1178 | case RELOC_16: | |
1179 | case RELOC_DISP8: | |
1180 | case RELOC_DISP16: | |
1181 | case RELOC_DISP32: | |
1182 | #endif | |
1183 | case RELOC_WDISP30: | |
1184 | val = (val >>= 2) + 1; | |
1185 | buf[0] |= (val >> 24) & 0x3f; | |
1186 | buf[1]= (val >> 16); | |
1187 | buf[2] = val >> 8; | |
1188 | buf[3] = val; | |
1189 | break; | |
839df5c3 | 1190 | |
6321e9ea | 1191 | /* start-sanitize-v9 */ |
839df5c3 | 1192 | #ifndef NO_V9 |
6321e9ea RP |
1193 | case RELOC_11: |
1194 | if (val & 0x7ff) { | |
1195 | as_bad("relocation overflow"); | |
1196 | } /* on overflow */ | |
1197 | ||
1198 | buf[2] = (val >> 8) & 0x7; | |
1199 | buf[3] = val & 0xff; | |
1200 | break; | |
1201 | ||
1202 | case RELOC_WDISP2_14: | |
1203 | if (val & ~0xffff) { | |
1204 | as_bad("relocation overflow."); | |
1205 | } /* on overflow */ | |
1206 | ||
839df5c3 | 1207 | val = (val >>= 2) + 1; |
6321e9ea | 1208 | buf[1] |= ((val >> 14) & 0x3) << 3; |
839df5c3 | 1209 | buf[2] |= (val >> 8) & 0x3f ; |
6321e9ea | 1210 | buf[3] = val & 0xff; |
839df5c3 RP |
1211 | break; |
1212 | ||
6321e9ea RP |
1213 | case RELOC_WDISP19: |
1214 | if (val & ~0x7ffff) { | |
1215 | as_bad("relocation overflow."); | |
1216 | } /* on overflow */ | |
1217 | ||
839df5c3 | 1218 | val = (val >>= 2) + 1; |
6321e9ea RP |
1219 | buf[1] |= (val >> 16) & 0x7; |
1220 | buf[2] = (val >> 8) & 0xff; | |
1221 | buf[3] = val & 0xff; | |
839df5c3 RP |
1222 | break; |
1223 | #endif /* NO_V9 */ | |
6321e9ea | 1224 | /* end-sanitize-v9 */ |
839df5c3 | 1225 | |
fecd2382 RP |
1226 | case RELOC_HI22: |
1227 | if(!fixP->fx_addsy) { | |
1228 | buf[1] |= (val >> 26) & 0x3f; | |
1229 | buf[2] = val >> 18; | |
1230 | buf[3] = val >> 10; | |
1231 | } else { | |
1232 | buf[2]=0; | |
1233 | buf[3]=0; | |
1234 | } | |
1235 | break; | |
1236 | #if 0 | |
1237 | case RELOC_22: | |
1238 | case RELOC_13: | |
1239 | #endif | |
1240 | case RELOC_LO10: | |
1241 | if(!fixP->fx_addsy) { | |
1242 | buf[2] |= (val >> 8) & 0x03; | |
1243 | buf[3] = val; | |
1244 | } else | |
1245 | buf[3]=0; | |
1246 | break; | |
1247 | #if 0 | |
1248 | case RELOC_SFA_BASE: | |
1249 | case RELOC_SFA_OFF13: | |
1250 | case RELOC_BASE10: | |
1251 | #endif | |
1252 | case RELOC_BASE13: | |
1253 | buf[2] |= (val >> 8) & 0x1f; | |
1254 | buf[3] = val; | |
1255 | break; | |
1256 | ||
1257 | case RELOC_WDISP22: | |
1258 | val = (val >>= 2) + 1; | |
1259 | /* FALLTHROUGH */ | |
1260 | case RELOC_BASE22: | |
1261 | buf[1] |= (val >> 16) & 0x3f; | |
1262 | buf[2] = val >> 8; | |
1263 | buf[3] = val; | |
1264 | break; | |
1265 | ||
1266 | #if 0 | |
1267 | case RELOC_PC10: | |
1268 | case RELOC_PC22: | |
1269 | case RELOC_JMP_TBL: | |
1270 | case RELOC_SEGOFF16: | |
1271 | case RELOC_GLOB_DAT: | |
1272 | case RELOC_JMP_SLOT: | |
1273 | case RELOC_RELATIVE: | |
1274 | #endif | |
1275 | ||
1276 | case NO_RELOC: | |
1277 | default: | |
1278 | as_bad("bad relocation type: 0x%02x", fixP->fx_r_type); | |
1279 | break; | |
1280 | } | |
1281 | } /* md_apply_fix() */ | |
1282 | ||
1283 | /* should never be called for sparc */ | |
1284 | void md_create_short_jump(ptr, from_addr, to_addr, frag, to_symbol) | |
1285 | char *ptr; | |
1286 | long from_addr; | |
1287 | long to_addr; | |
1288 | fragS *frag; | |
1289 | symbolS *to_symbol; | |
1290 | { | |
1291 | fprintf(stderr, "sparc_create_short_jmp\n"); | |
1292 | abort(); | |
1293 | } /* md_create_short_jump() */ | |
1294 | ||
1295 | /* Translate internal representation of relocation info to target format. | |
1296 | ||
1297 | On sparc: first 4 bytes are normal unsigned long address, next three | |
1298 | bytes are index, most sig. byte first. Byte 7 is broken up with | |
1299 | bit 7 as external, bits 6 & 5 unused, and the lower | |
1300 | five bits as relocation type. Next 4 bytes are long addend. */ | |
1301 | /* Thanx and a tip of the hat to Michael Bloom, mb@ttidca.tti.com */ | |
1302 | void md_ri_to_chars(the_bytes, ri) | |
1303 | char *the_bytes; | |
1304 | struct reloc_info_generic *ri; | |
1305 | { | |
1306 | /* this is easy */ | |
1307 | md_number_to_chars(the_bytes, ri->r_address, 4); | |
1308 | /* now the fun stuff */ | |
1309 | the_bytes[4] = (ri->r_index >> 16) & 0x0ff; | |
1310 | the_bytes[5] = (ri->r_index >> 8) & 0x0ff; | |
1311 | the_bytes[6] = ri->r_index & 0x0ff; | |
1312 | the_bytes[7] = ((ri->r_extern << 7) & 0x80) | (0 & 0x60) | (ri->r_type & 0x1F); | |
1313 | /* Also easy */ | |
1314 | md_number_to_chars(&the_bytes[8], ri->r_addend, 4); | |
1315 | } /* md_ri_to_chars() */ | |
1316 | ||
1317 | /* should never be called for sparc */ | |
1318 | void md_convert_frag(fragP) | |
1319 | register fragS *fragP; | |
1320 | { | |
1321 | fprintf(stderr, "sparc_convert_frag\n"); | |
1322 | abort(); | |
1323 | } /* md_convert_frag() */ | |
1324 | ||
1325 | /* should never be called for sparc */ | |
1326 | void md_create_long_jump(ptr, from_addr, to_addr, frag, to_symbol) | |
1327 | char *ptr; | |
1328 | long from_addr, to_addr; | |
1329 | fragS *frag; | |
1330 | symbolS *to_symbol; | |
1331 | { | |
1332 | fprintf(stderr, "sparc_create_long_jump\n"); | |
1333 | abort(); | |
1334 | } /* md_create_long_jump() */ | |
1335 | ||
1336 | /* should never be called for sparc */ | |
1337 | int md_estimate_size_before_relax(fragP, segtype) | |
1338 | fragS *fragP; | |
1339 | segT segtype; | |
1340 | { | |
1341 | fprintf(stderr, "sparc_estimate_size_before_relax\n"); | |
1342 | abort(); | |
1343 | return 0; | |
1344 | } /* md_estimate_size_before_relax() */ | |
1345 | ||
1346 | #if 0 | |
1347 | /* for debugging only */ | |
1348 | static void print_insn(insn) | |
1349 | struct sparc_it *insn; | |
1350 | { | |
1351 | char *Reloc[] = { | |
1352 | "RELOC_8", | |
1353 | "RELOC_16", | |
1354 | "RELOC_32", | |
1355 | "RELOC_DISP8", | |
1356 | "RELOC_DISP16", | |
1357 | "RELOC_DISP32", | |
1358 | "RELOC_WDISP30", | |
1359 | "RELOC_WDISP22", | |
1360 | "RELOC_HI22", | |
1361 | "RELOC_22", | |
1362 | "RELOC_13", | |
1363 | "RELOC_LO10", | |
1364 | "RELOC_SFA_BASE", | |
1365 | "RELOC_SFA_OFF13", | |
1366 | "RELOC_BASE10", | |
1367 | "RELOC_BASE13", | |
1368 | "RELOC_BASE22", | |
1369 | "RELOC_PC10", | |
1370 | "RELOC_PC22", | |
1371 | "RELOC_JMP_TBL", | |
1372 | "RELOC_SEGOFF16", | |
1373 | "RELOC_GLOB_DAT", | |
1374 | "RELOC_JMP_SLOT", | |
1375 | "RELOC_RELATIVE", | |
1376 | "NO_RELOC" | |
1377 | }; | |
1378 | ||
1379 | if (insn->error) { | |
1380 | fprintf(stderr, "ERROR: %s\n"); | |
1381 | } | |
1382 | fprintf(stderr, "opcode=0x%08x\n", insn->opcode); | |
1383 | fprintf(stderr, "reloc = %s\n", Reloc[insn->reloc]); | |
1384 | fprintf(stderr, "exp = { | |
1385 | \n"); | |
1386 | fprintf(stderr, "\t\tX_add_symbol = %s\n", | |
1387 | ((insn->exp.X_add_symbol != NULL) | |
1388 | ? ((S_GET_NAME(insn->exp.X_add_symbol) != NULL) | |
1389 | ? S_GET_NAME(insn->exp.X_add_symbol) | |
1390 | : "???") | |
1391 | : "0")); | |
1392 | fprintf(stderr, "\t\tX_sub_symbol = %s\n", | |
1393 | ((insn->exp.X_subtract_symbol != NULL) | |
1394 | ? (S_GET_NAME(insn->exp.X_subtract_symbol) | |
1395 | ? S_GET_NAME(insn->exp.X_subtract_symbol) | |
1396 | : "???") | |
1397 | : "0")); | |
1398 | fprintf(stderr, "\t\tX_add_number = %d\n", | |
1399 | insn->exp.X_add_number); | |
1400 | fprintf(stderr, "}\n"); | |
1401 | return; | |
1402 | } /* print_insn() */ | |
1403 | #endif | |
1404 | ||
1405 | /* Set the hook... */ | |
1406 | ||
1407 | void emit_sparc_reloc(); | |
1408 | void (*md_emit_relocations)() = emit_sparc_reloc; | |
1409 | ||
1410 | /* | |
1411 | * Sparc/AM29K relocations are completely different, so it needs | |
1412 | * this machine dependent routine to emit them. | |
1413 | */ | |
1414 | #if defined(OBJ_AOUT) || defined(OBJ_BOUT) | |
1415 | void emit_sparc_reloc(fixP, segment_address_in_file) | |
1416 | register fixS *fixP; | |
1417 | relax_addressT segment_address_in_file; | |
1418 | { | |
1419 | struct reloc_info_generic ri; | |
1420 | register symbolS *symbolP; | |
1421 | extern char *next_object_file_charP; | |
1422 | /* long add_number; */ | |
1423 | ||
1424 | bzero((char *) &ri, sizeof(ri)); | |
1425 | for (; fixP; fixP = fixP->fx_next) { | |
1426 | ||
1427 | if (fixP->fx_r_type >= NO_RELOC) { | |
1428 | fprintf(stderr, "fixP->fx_r_type = %d\n", fixP->fx_r_type); | |
1429 | abort(); | |
1430 | } | |
1431 | ||
1432 | if ((symbolP = fixP->fx_addsy) != NULL) { | |
1433 | ri.r_address = fixP->fx_frag->fr_address + | |
1434 | fixP->fx_where - segment_address_in_file; | |
1435 | if ((S_GET_TYPE(symbolP)) == N_UNDF) { | |
1436 | ri.r_extern = 1; | |
1437 | ri.r_index = symbolP->sy_number; | |
1438 | } else { | |
1439 | ri.r_extern = 0; | |
1440 | ri.r_index = S_GET_TYPE(symbolP); | |
1441 | } | |
1442 | if (symbolP && symbolP->sy_frag) { | |
1443 | ri.r_addend = symbolP->sy_frag->fr_address; | |
1444 | } | |
1445 | ri.r_type = fixP->fx_r_type; | |
1446 | if (fixP->fx_pcrel) { | |
1447 | /* ri.r_addend -= fixP->fx_where; */ | |
1448 | ri.r_addend -= ri.r_address; | |
1449 | } else { | |
1450 | ri.r_addend = fixP->fx_addnumber; | |
1451 | } | |
1452 | ||
1453 | md_ri_to_chars(next_object_file_charP, &ri); | |
1454 | next_object_file_charP += md_reloc_size; | |
1455 | } | |
1456 | } | |
1457 | return; | |
1458 | } /* emit_sparc_reloc() */ | |
1459 | #endif /* aout or bout */ | |
1460 | ||
839df5c3 RP |
1461 | /* |
1462 | * md_parse_option | |
1463 | * Invocation line includes a switch not recognized by the base assembler. | |
1464 | * See if it's a processor-specific option. These are: | |
1465 | * | |
1466 | * -bump | |
1467 | * Warn on architecture bumps. See also -A. | |
1468 | * | |
1469 | * -Av6, -Av7, -Acypress, -Av8 | |
839df5c3 RP |
1470 | * Select the architecture. Instructions or features not |
1471 | * supported by the selected architecture cause fatal errors. | |
1472 | * | |
1473 | * The default is to start at v6, and bump the architecture up | |
1474 | * whenever an instruction is seen at a higher level. | |
1475 | * | |
1476 | * If -bump is specified, a warning is printing when bumping to | |
1477 | * higher levels. | |
1478 | * | |
1479 | * If an architecture is specified, all instructions must match | |
1480 | * that architecture. Any higher level instructions are flagged | |
1481 | * as errors. | |
1482 | * | |
1483 | * if both an architecture and -bump are specified, the | |
1484 | * architecture starts at the specified level, but bumps are | |
1485 | * warnings. | |
1486 | * | |
1487 | * Note that where cypress specific instructions conflict with | |
1488 | * other instructions, the other instruction is assumed. Nothing | |
1489 | * is upward compatible with cypress. Thus, to get the cypress | |
1490 | * instruction set you MUST -Acypress. | |
1491 | * | |
1492 | */ | |
6321e9ea | 1493 | /* start-sanitize-v9 */ |
afe3b668 | 1494 | /* There is also a -Av9 architecture option. xoxorich. */ |
6321e9ea | 1495 | /* end-sanitize-v9 */ |
839df5c3 | 1496 | int md_parse_option(argP, cntP, vecP) |
fecd2382 RP |
1497 | char **argP; |
1498 | int *cntP; | |
1499 | char ***vecP; | |
1500 | { | |
839df5c3 RP |
1501 | char *p; |
1502 | const char **arch; | |
1503 | ||
1504 | if (!strcmp(*argP,"bump")){ | |
1505 | warn_on_bump = 1; | |
1506 | ||
1507 | } else if (**argP == 'A'){ | |
1508 | p = (*argP) + 1; | |
1509 | ||
1510 | for (arch = architecture_pname; *arch != NULL; ++arch){ | |
1511 | if (strcmp(p, *arch) == 0){ | |
1512 | break; | |
1513 | } /* found a match */ | |
1514 | } /* walk the pname table */ | |
1515 | ||
1516 | if (*arch == NULL){ | |
1517 | as_bad("unknown architecture: %s", p); | |
1518 | } else { | |
1519 | current_architecture = (enum sparc_architecture) (arch - architecture_pname); | |
1520 | architecture_requested = 1; | |
1521 | } | |
1522 | } else { | |
1523 | /* Unknown option */ | |
1524 | (*argP)++; | |
1525 | return 0; | |
1526 | } | |
1527 | **argP = '\0'; /* Done parsing this switch */ | |
fecd2382 RP |
1528 | return 1; |
1529 | } /* md_parse_option() */ | |
1530 | ||
1531 | /* We have no need to default values of symbols. */ | |
1532 | ||
1533 | /* ARGSUSED */ | |
1534 | symbolS *md_undefined_symbol(name) | |
1535 | char *name; | |
1536 | { | |
1537 | return 0; | |
1538 | } /* md_undefined_symbol() */ | |
1539 | ||
1540 | /* Parse an operand that is machine-specific. | |
1541 | We just return without modifying the expression if we have nothing | |
1542 | to do. */ | |
1543 | ||
1544 | /* ARGSUSED */ | |
1545 | void md_operand(expressionP) | |
1546 | expressionS *expressionP; | |
1547 | { | |
1548 | } /* md_operand() */ | |
1549 | ||
1550 | /* Round up a section size to the appropriate boundary. */ | |
1551 | long md_section_align (segment, size) | |
1552 | segT segment; | |
1553 | long size; | |
1554 | { | |
1555 | return (size + 7) & ~7; /* Round all sects to multiple of 8 */ | |
1556 | } /* md_section_align() */ | |
1557 | ||
1558 | /* Exactly what point is a PC-relative offset relative TO? | |
1559 | On the sparc, they're relative to the address of the offset, plus | |
1560 | its size. This gets us to the following instruction. | |
1561 | (??? Is this right? FIXME-SOON) */ | |
1562 | long md_pcrel_from(fixP) | |
1563 | fixS *fixP; | |
1564 | { | |
1565 | return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; | |
1566 | } /* md_pcrel_from() */ | |
1567 | ||
1568 | /* | |
1569 | * Local Variables: | |
1570 | * comment-column: 0 | |
1571 | * fill-column: 131 | |
1572 | * End: | |
1573 | */ | |
1574 | ||
1575 | /* end of tp-sparc.c */ |