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[deliverable/binutils-gdb.git] / gas / config / tc-m68k.c
1 /* tc-m68k.c -- Assemble for the m68k family
2 Copyright (C) 1987-2015 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
8 the Free Software Foundation; either version 3, or (at your option)
9 any later version.
10
11 GAS is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 GNU General Public License for more details.
15
16 You should have received a copy of the GNU General Public License
17 along with GAS; see the file COPYING. If not, write to the Free
18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
19 02110-1301, USA. */
20
21 #include "as.h"
22 #include "safe-ctype.h"
23 #include "obstack.h"
24 #include "subsegs.h"
25 #include "dwarf2dbg.h"
26 #include "dw2gencfi.h"
27
28 #include "opcode/m68k.h"
29 #include "m68k-parse.h"
30
31 #if defined (OBJ_ELF)
32 #include "elf/m68k.h"
33 #endif
34
35 #ifdef M68KCOFF
36 #include "obj-coff.h"
37 #endif
38
39 #ifdef OBJ_ELF
40 static void m68k_elf_cons (int);
41 #endif
42
43 /* This string holds the chars that always start a comment. If the
44 pre-processor is disabled, these aren't very useful. The macro
45 tc_comment_chars points to this. We use this, rather than the
46 usual comment_chars, so that the --bitwise-or option will work. */
47 #if defined (TE_SVR4) || defined (TE_DELTA)
48 const char *m68k_comment_chars = "|#";
49 #else
50 const char *m68k_comment_chars = "|";
51 #endif
52
53 /* This array holds the chars that only start a comment at the beginning of
54 a line. If the line seems to have the form '# 123 filename'
55 .line and .file directives will appear in the pre-processed output */
56 /* Note that input_file.c hand checks for '#' at the beginning of the
57 first line of the input file. This is because the compiler outputs
58 #NO_APP at the beginning of its output. */
59 /* Also note that comments like this one will always work. */
60 const char line_comment_chars[] = "#*";
61
62 const char line_separator_chars[] = ";";
63
64 /* Chars that can be used to separate mant from exp in floating point nums. */
65 const char EXP_CHARS[] = "eE";
66
67 /* Chars that mean this number is a floating point constant, as
68 in "0f12.456" or "0d1.2345e12". */
69
70 const char FLT_CHARS[] = "rRsSfFdDxXeEpP";
71
72 /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
73 changed in read.c . Ideally it shouldn't have to know about it at all,
74 but nothing is ideal around here. */
75
76 /* Are we trying to generate PIC code? If so, absolute references
77 ought to be made into linkage table references or pc-relative
78 references. Not implemented. For ELF there are other means
79 to denote pic relocations. */
80 int flag_want_pic;
81
82 static int flag_short_refs; /* -l option. */
83 static int flag_long_jumps; /* -S option. */
84 static int flag_keep_pcrel; /* --pcrel option. */
85
86 #ifdef REGISTER_PREFIX_OPTIONAL
87 int flag_reg_prefix_optional = REGISTER_PREFIX_OPTIONAL;
88 #else
89 int flag_reg_prefix_optional;
90 #endif
91
92 /* Whether --register-prefix-optional was used on the command line. */
93 static int reg_prefix_optional_seen;
94
95 /* The floating point coprocessor to use by default. */
96 static enum m68k_register m68k_float_copnum = COP1;
97
98 /* If this is non-zero, then references to number(%pc) will be taken
99 to refer to number, rather than to %pc + number. */
100 static int m68k_abspcadd;
101
102 /* If this is non-zero, then the quick forms of the move, add, and sub
103 instructions are used when possible. */
104 static int m68k_quick = 1;
105
106 /* If this is non-zero, then if the size is not specified for a base
107 or outer displacement, the assembler assumes that the size should
108 be 32 bits. */
109 static int m68k_rel32 = 1;
110
111 /* This is non-zero if m68k_rel32 was set from the command line. */
112 static int m68k_rel32_from_cmdline;
113
114 /* The default width to use for an index register when using a base
115 displacement. */
116 static enum m68k_size m68k_index_width_default = SIZE_LONG;
117
118 /* We want to warn if any text labels are misaligned. In order to get
119 the right line number, we need to record the line number for each
120 label. */
121 struct label_line
122 {
123 struct label_line *next;
124 symbolS *label;
125 char *file;
126 unsigned int line;
127 int text;
128 };
129
130 /* The list of labels. */
131
132 static struct label_line *labels;
133
134 /* The current label. */
135
136 static struct label_line *current_label;
137
138 /* Pointer to list holding the opcodes sorted by name. */
139 static struct m68k_opcode const ** m68k_sorted_opcodes;
140
141 /* Its an arbitrary name: This means I don't approve of it.
142 See flames below. */
143 static struct obstack robyn;
144
145 struct m68k_incant
146 {
147 const char *m_operands;
148 unsigned long m_opcode;
149 short m_opnum;
150 short m_codenum;
151 int m_arch;
152 struct m68k_incant *m_next;
153 };
154
155 #define getone(x) ((((x)->m_opcode)>>16)&0xffff)
156 #define gettwo(x) (((x)->m_opcode)&0xffff)
157
158 static const enum m68k_register m68000_ctrl[] = { 0 };
159 static const enum m68k_register m68010_ctrl[] = {
160 SFC, DFC, USP, VBR,
161 0
162 };
163 static const enum m68k_register m68020_ctrl[] = {
164 SFC, DFC, USP, VBR, CACR, CAAR, MSP, ISP,
165 0
166 };
167 static const enum m68k_register m68040_ctrl[] = {
168 SFC, DFC, CACR, TC, ITT0, ITT1, DTT0, DTT1,
169 USP, VBR, MSP, ISP, MMUSR, URP, SRP,
170 0
171 };
172 static const enum m68k_register m68060_ctrl[] = {
173 SFC, DFC, CACR, TC, ITT0, ITT1, DTT0, DTT1, BUSCR,
174 USP, VBR, URP, SRP, PCR,
175 0
176 };
177 static const enum m68k_register mcf_ctrl[] = {
178 CACR, TC, ACR0, ACR1, ACR2, ACR3, VBR, ROMBAR,
179 RAMBAR0, RAMBAR1, RAMBAR, MBAR,
180 0
181 };
182 static const enum m68k_register mcf51_ctrl[] = {
183 VBR, CPUCR,
184 0
185 };
186 static const enum m68k_register mcf5206_ctrl[] = {
187 CACR, ACR0, ACR1, VBR, RAMBAR0, RAMBAR_ALT, MBAR,
188 0
189 };
190 static const enum m68k_register mcf5208_ctrl[] = {
191 CACR, ACR0, ACR1, VBR, RAMBAR, RAMBAR1,
192 0
193 };
194 static const enum m68k_register mcf5210a_ctrl[] = {
195 VBR, CACR, ACR0, ACR1, ROMBAR, RAMBAR, RAMBAR1, MBAR,
196 0
197 };
198 static const enum m68k_register mcf5213_ctrl[] = {
199 VBR, RAMBAR, RAMBAR1, FLASHBAR,
200 0
201 };
202 static const enum m68k_register mcf5216_ctrl[] = {
203 VBR, CACR, ACR0, ACR1, FLASHBAR, RAMBAR, RAMBAR1,
204 0
205 };
206 static const enum m68k_register mcf5221x_ctrl[] = {
207 VBR, FLASHBAR, RAMBAR, RAMBAR1,
208 0
209 };
210 static const enum m68k_register mcf52223_ctrl[] = {
211 VBR, FLASHBAR, RAMBAR, RAMBAR1,
212 0
213 };
214 static const enum m68k_register mcf52235_ctrl[] = {
215 VBR, FLASHBAR, RAMBAR, RAMBAR1,
216 0
217 };
218 static const enum m68k_register mcf5225_ctrl[] = {
219 VBR, CACR, ACR0, ACR1, FLASHBAR, RAMBAR, MBAR, RAMBAR1,
220 0
221 };
222 static const enum m68k_register mcf52259_ctrl[] = {
223 VBR, FLASHBAR, RAMBAR, RAMBAR1,
224 0
225 };
226 static const enum m68k_register mcf52277_ctrl[] = {
227 VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
228 0
229 };
230 static const enum m68k_register mcf5235_ctrl[] = {
231 VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
232 0
233 };
234 static const enum m68k_register mcf5249_ctrl[] = {
235 VBR, CACR, ACR0, ACR1, RAMBAR0, RAMBAR1, RAMBAR, MBAR, MBAR2,
236 0
237 };
238 static const enum m68k_register mcf5250_ctrl[] = {
239 VBR,
240 0
241 };
242 static const enum m68k_register mcf5253_ctrl[] = {
243 VBR, CACR, ACR0, ACR1, RAMBAR0, RAMBAR1, RAMBAR, MBAR, MBAR2,
244 0
245 };
246 static const enum m68k_register mcf5271_ctrl[] = {
247 VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
248 0
249 };
250 static const enum m68k_register mcf5272_ctrl[] = {
251 VBR, CACR, ACR0, ACR1, ROMBAR, RAMBAR_ALT, RAMBAR0, MBAR,
252 0
253 };
254 static const enum m68k_register mcf5275_ctrl[] = {
255 VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
256 0
257 };
258 static const enum m68k_register mcf5282_ctrl[] = {
259 VBR, CACR, ACR0, ACR1, FLASHBAR, RAMBAR, RAMBAR1,
260 0
261 };
262 static const enum m68k_register mcf53017_ctrl[] = {
263 VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
264 0
265 };
266 static const enum m68k_register mcf5307_ctrl[] = {
267 VBR, CACR, ACR0, ACR1, RAMBAR0, RAMBAR_ALT, MBAR,
268 0
269 };
270 static const enum m68k_register mcf5329_ctrl[] = {
271 VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
272 0
273 };
274 static const enum m68k_register mcf5373_ctrl[] = {
275 VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
276 0
277 };
278 static const enum m68k_register mcfv4e_ctrl[] = {
279 CACR, ASID, ACR0, ACR1, ACR2, ACR3, MMUBAR,
280 VBR, PC, ROMBAR0, ROMBAR1, RAMBAR0, RAMBAR1,
281 MBAR, SECMBAR,
282 MPCR /* Multiprocessor Control register */,
283 EDRAMBAR /* Embedded DRAM Base Address Register */,
284 /* Permutation control registers. */
285 PCR1U0, PCR1L0, PCR1U1, PCR1L1, PCR2U0, PCR2L0, PCR2U1, PCR2L1,
286 PCR3U0, PCR3L0, PCR3U1, PCR3L1,
287 /* Legacy names */
288 TC /* ASID */, BUSCR /* MMUBAR */,
289 ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
290 MBAR1 /* MBAR */, MBAR2 /* SECMBAR */, MBAR0 /* SECMBAR */,
291 ROMBAR /* ROMBAR0 */, RAMBAR /* RAMBAR1 */,
292 0
293 };
294 static const enum m68k_register mcf5407_ctrl[] = {
295 CACR, ASID, ACR0, ACR1, ACR2, ACR3,
296 VBR, PC, RAMBAR0, RAMBAR1, MBAR,
297 /* Legacy names */
298 TC /* ASID */,
299 ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
300 MBAR1 /* MBAR */, RAMBAR /* RAMBAR1 */,
301 0
302 };
303 static const enum m68k_register mcf54418_ctrl[] = {
304 CACR, ASID, ACR0, ACR1, ACR2, ACR3, ACR4, ACR5, ACR6, ACR7, MMUBAR, RGPIOBAR,
305 VBR, PC, RAMBAR1,
306 /* Legacy names */
307 TC /* ASID */, BUSCR /* MMUBAR */,
308 ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
309 RAMBAR /* RAMBAR1 */,
310 0
311 };
312 static const enum m68k_register mcf54455_ctrl[] = {
313 CACR, ASID, ACR0, ACR1, ACR2, ACR3, MMUBAR,
314 VBR, PC, RAMBAR1,
315 /* Legacy names */
316 TC /* ASID */, BUSCR /* MMUBAR */,
317 ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
318 RAMBAR /* RAMBAR1 */,
319 0
320 };
321 static const enum m68k_register mcf5475_ctrl[] = {
322 CACR, ASID, ACR0, ACR1, ACR2, ACR3, MMUBAR,
323 VBR, PC, RAMBAR0, RAMBAR1, MBAR,
324 /* Legacy names */
325 TC /* ASID */, BUSCR /* MMUBAR */,
326 ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
327 MBAR1 /* MBAR */, RAMBAR /* RAMBAR1 */,
328 0
329 };
330 static const enum m68k_register mcf5485_ctrl[] = {
331 CACR, ASID, ACR0, ACR1, ACR2, ACR3, MMUBAR,
332 VBR, PC, RAMBAR0, RAMBAR1, MBAR,
333 /* Legacy names */
334 TC /* ASID */, BUSCR /* MMUBAR */,
335 ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
336 MBAR1 /* MBAR */, RAMBAR /* RAMBAR1 */,
337 0
338 };
339 static const enum m68k_register fido_ctrl[] = {
340 SFC, DFC, USP, VBR, CAC, MBO,
341 0
342 };
343 #define cpu32_ctrl m68010_ctrl
344
345 static const enum m68k_register *control_regs;
346
347 /* Internal form of a 68020 instruction. */
348 struct m68k_it
349 {
350 const char *error;
351 const char *args; /* List of opcode info. */
352 int numargs;
353
354 int numo; /* Number of shorts in opcode. */
355 short opcode[11];
356
357 struct m68k_op operands[6];
358
359 int nexp; /* Number of exprs in use. */
360 struct m68k_exp exprs[4];
361
362 int nfrag; /* Number of frags we have to produce. */
363 struct
364 {
365 int fragoff; /* Where in the current opcode the frag ends. */
366 symbolS *fadd;
367 offsetT foff;
368 int fragty;
369 }
370 fragb[4];
371
372 int nrel; /* Num of reloc strucs in use. */
373 struct
374 {
375 int n;
376 expressionS exp;
377 char wid;
378 char pcrel;
379 /* In a pc relative address the difference between the address
380 of the offset and the address that the offset is relative
381 to. This depends on the addressing mode. Basically this
382 is the value to put in the offset field to address the
383 first byte of the offset, without regarding the special
384 significance of some values (in the branch instruction, for
385 example). */
386 int pcrel_fix;
387 #ifdef OBJ_ELF
388 /* Whether this expression needs special pic relocation, and if
389 so, which. */
390 enum pic_relocation pic_reloc;
391 #endif
392 }
393 reloc[5]; /* Five is enough??? */
394 };
395
396 #define cpu_of_arch(x) ((x) & (m68000up | mcfisa_a | fido_a))
397 #define float_of_arch(x) ((x) & mfloat)
398 #define mmu_of_arch(x) ((x) & mmmu)
399 #define arch_coldfire_p(x) ((x) & mcfisa_a)
400 #define arch_coldfire_fpu(x) ((x) & cfloat)
401
402 /* Macros for determining if cpu supports a specific addressing mode. */
403 #define HAVE_LONG_DISP(x) \
404 ((x) & (m68020|m68030|m68040|m68060|cpu32|fido_a|mcfisa_b|mcfisa_c))
405 #define HAVE_LONG_CALL(x) \
406 ((x) & (m68020|m68030|m68040|m68060|cpu32|fido_a|mcfisa_b|mcfisa_c))
407 #define HAVE_LONG_COND(x) \
408 ((x) & (m68020|m68030|m68040|m68060|cpu32|fido_a|mcfisa_b|mcfisa_c))
409 #define HAVE_LONG_BRANCH(x) \
410 ((x) & (m68020|m68030|m68040|m68060|cpu32|fido_a|mcfisa_b))
411 #define LONG_BRANCH_VIA_COND(x) (HAVE_LONG_COND(x) && !HAVE_LONG_BRANCH(x))
412
413 static struct m68k_it the_ins; /* The instruction being assembled. */
414
415 #define op(ex) ((ex)->exp.X_op)
416 #define adds(ex) ((ex)->exp.X_add_symbol)
417 #define subs(ex) ((ex)->exp.X_op_symbol)
418 #define offs(ex) ((ex)->exp.X_add_number)
419
420 /* Macros for adding things to the m68k_it struct. */
421 #define addword(w) (the_ins.opcode[the_ins.numo++] = (w))
422
423 /* Like addword, but goes BEFORE general operands. */
424
425 static void
426 insop (int w, const struct m68k_incant *opcode)
427 {
428 int z;
429 for (z = the_ins.numo; z > opcode->m_codenum; --z)
430 the_ins.opcode[z] = the_ins.opcode[z - 1];
431 for (z = 0; z < the_ins.nrel; z++)
432 the_ins.reloc[z].n += 2;
433 for (z = 0; z < the_ins.nfrag; z++)
434 the_ins.fragb[z].fragoff++;
435 the_ins.opcode[opcode->m_codenum] = w;
436 the_ins.numo++;
437 }
438
439 /* The numo+1 kludge is so we can hit the low order byte of the prev word.
440 Blecch. */
441 static void
442 add_fix (int width, struct m68k_exp *exp, int pc_rel, int pc_fix)
443 {
444 the_ins.reloc[the_ins.nrel].n = (width == 'B' || width == '3'
445 ? the_ins.numo * 2 - 1
446 : (width == 'b'
447 ? the_ins.numo * 2 + 1
448 : the_ins.numo * 2));
449 the_ins.reloc[the_ins.nrel].exp = exp->exp;
450 the_ins.reloc[the_ins.nrel].wid = width;
451 the_ins.reloc[the_ins.nrel].pcrel_fix = pc_fix;
452 #ifdef OBJ_ELF
453 the_ins.reloc[the_ins.nrel].pic_reloc = exp->pic_reloc;
454 #endif
455 the_ins.reloc[the_ins.nrel++].pcrel = pc_rel;
456 }
457
458 /* Cause an extra frag to be generated here, inserting up to 10 bytes
459 (that value is chosen in the frag_var call in md_assemble). TYPE
460 is the subtype of the frag to be generated; its primary type is
461 rs_machine_dependent.
462
463 The TYPE parameter is also used by md_convert_frag_1 and
464 md_estimate_size_before_relax. The appropriate type of fixup will
465 be emitted by md_convert_frag_1.
466
467 ADD becomes the FR_SYMBOL field of the frag, and OFF the FR_OFFSET. */
468 static void
469 add_frag (symbolS *add, offsetT off, int type)
470 {
471 the_ins.fragb[the_ins.nfrag].fragoff = the_ins.numo;
472 the_ins.fragb[the_ins.nfrag].fadd = add;
473 the_ins.fragb[the_ins.nfrag].foff = off;
474 the_ins.fragb[the_ins.nfrag++].fragty = type;
475 }
476
477 #define isvar(ex) \
478 (op (ex) != O_constant && op (ex) != O_big)
479
480 static char *crack_operand (char *str, struct m68k_op *opP);
481 static int get_num (struct m68k_exp *exp, int ok);
482 static int reverse_16_bits (int in);
483 static int reverse_8_bits (int in);
484 static void install_gen_operand (int mode, int val);
485 static void install_operand (int mode, int val);
486 static void s_bss (int);
487 static void s_data1 (int);
488 static void s_data2 (int);
489 static void s_even (int);
490 static void s_proc (int);
491 static void s_chip (int);
492 static void s_fopt (int);
493 static void s_opt (int);
494 static void s_reg (int);
495 static void s_restore (int);
496 static void s_save (int);
497 static void s_mri_if (int);
498 static void s_mri_else (int);
499 static void s_mri_endi (int);
500 static void s_mri_break (int);
501 static void s_mri_next (int);
502 static void s_mri_for (int);
503 static void s_mri_endf (int);
504 static void s_mri_repeat (int);
505 static void s_mri_until (int);
506 static void s_mri_while (int);
507 static void s_mri_endw (int);
508 static void s_m68k_cpu (int);
509 static void s_m68k_arch (int);
510
511 struct m68k_cpu
512 {
513 unsigned long arch; /* Architecture features. */
514 const enum m68k_register *control_regs; /* Control regs on chip */
515 const char *name; /* Name */
516 int alias; /* Alias for a cannonical name. If 1, then
517 succeeds canonical name, if -1 then
518 succeeds canonical name, if <-1 ||>1 this is a
519 deprecated name, and the next/previous name
520 should be used. */
521 };
522
523 /* We hold flags for features explicitly enabled and explicitly
524 disabled. */
525 static int current_architecture;
526 static int not_current_architecture;
527 static const struct m68k_cpu *selected_arch;
528 static const struct m68k_cpu *selected_cpu;
529 static int initialized;
530
531 /* Architecture models. */
532 static const struct m68k_cpu m68k_archs[] =
533 {
534 {m68000, m68000_ctrl, "68000", 0},
535 {m68010, m68010_ctrl, "68010", 0},
536 {m68020|m68881|m68851, m68020_ctrl, "68020", 0},
537 {m68030|m68881|m68851, m68020_ctrl, "68030", 0},
538 {m68040, m68040_ctrl, "68040", 0},
539 {m68060, m68060_ctrl, "68060", 0},
540 {cpu32|m68881, cpu32_ctrl, "cpu32", 0},
541 {fido_a, fido_ctrl, "fidoa", 0},
542 {mcfisa_a|mcfhwdiv, NULL, "isaa", 0},
543 {mcfisa_a|mcfhwdiv|mcfisa_aa|mcfusp, NULL, "isaaplus", 0},
544 {mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp, NULL, "isab", 0},
545 {mcfisa_a|mcfhwdiv|mcfisa_c|mcfusp, NULL, "isac", 0},
546 {mcfisa_a|mcfhwdiv|mcfisa_b|mcfmac|mcfusp, mcf_ctrl, "cfv4", 0},
547 {mcfisa_a|mcfhwdiv|mcfisa_b|mcfemac|mcfusp|cfloat, mcfv4e_ctrl, "cfv4e", 0},
548 {0,0,NULL, 0}
549 };
550
551 /* For -mno-mac we want to turn off all types of mac. */
552 static const unsigned no_mac = mcfmac | mcfemac;
553
554 /* Architecture extensions, here 'alias' -1 for m68k, +1 for cf and 0
555 for either. */
556 static const struct m68k_cpu m68k_extensions[] =
557 {
558 {m68851, NULL, "68851", -1},
559 {m68881, NULL, "68881", -1},
560 {m68881, NULL, "68882", -1},
561
562 {cfloat|m68881, NULL, "float", 0},
563
564 {mcfhwdiv, NULL, "div", 1},
565 {mcfusp, NULL, "usp", 1},
566 {mcfmac, (void *)&no_mac, "mac", 1},
567 {mcfemac, NULL, "emac", 1},
568
569 {0,NULL,NULL, 0}
570 };
571
572 /* Processor list */
573 static const struct m68k_cpu m68k_cpus[] =
574 {
575 {m68000, m68000_ctrl, "68000", 0},
576 {m68000, m68000_ctrl, "68ec000", 1},
577 {m68000, m68000_ctrl, "68hc000", 1},
578 {m68000, m68000_ctrl, "68hc001", 1},
579 {m68000, m68000_ctrl, "68008", 1},
580 {m68000, m68000_ctrl, "68302", 1},
581 {m68000, m68000_ctrl, "68306", 1},
582 {m68000, m68000_ctrl, "68307", 1},
583 {m68000, m68000_ctrl, "68322", 1},
584 {m68000, m68000_ctrl, "68356", 1},
585 {m68010, m68010_ctrl, "68010", 0},
586 {m68020|m68881|m68851, m68020_ctrl, "68020", 0},
587 {m68020|m68881|m68851, m68020_ctrl, "68k", 1},
588 {m68020|m68881|m68851, m68020_ctrl, "68ec020", 1},
589 {m68030|m68881|m68851, m68020_ctrl, "68030", 0},
590 {m68030|m68881|m68851, m68020_ctrl, "68ec030", 1},
591 {m68040, m68040_ctrl, "68040", 0},
592 {m68040, m68040_ctrl, "68ec040", 1},
593 {m68060, m68060_ctrl, "68060", 0},
594 {m68060, m68060_ctrl, "68ec060", 1},
595
596 {cpu32|m68881, cpu32_ctrl, "cpu32", 0},
597 {cpu32|m68881, cpu32_ctrl, "68330", 1},
598 {cpu32|m68881, cpu32_ctrl, "68331", 1},
599 {cpu32|m68881, cpu32_ctrl, "68332", 1},
600 {cpu32|m68881, cpu32_ctrl, "68333", 1},
601 {cpu32|m68881, cpu32_ctrl, "68334", 1},
602 {cpu32|m68881, cpu32_ctrl, "68336", 1},
603 {cpu32|m68881, cpu32_ctrl, "68340", 1},
604 {cpu32|m68881, cpu32_ctrl, "68341", 1},
605 {cpu32|m68881, cpu32_ctrl, "68349", 1},
606 {cpu32|m68881, cpu32_ctrl, "68360", 1},
607
608 {mcfisa_a|mcfisa_c|mcfusp, mcf51_ctrl, "51", 0},
609 {mcfisa_a|mcfisa_c|mcfusp, mcf51_ctrl, "51ac", 1},
610 {mcfisa_a|mcfisa_c|mcfusp, mcf51_ctrl, "51ag", 1},
611 {mcfisa_a|mcfisa_c|mcfusp, mcf51_ctrl, "51cn", 1},
612 {mcfisa_a|mcfisa_c|mcfusp|mcfmac, mcf51_ctrl, "51em", 1},
613 {mcfisa_a|mcfisa_c|mcfusp|mcfmac, mcf51_ctrl, "51je", 1},
614 {mcfisa_a|mcfisa_c|mcfusp|mcfemac, mcf51_ctrl, "51jf", 1},
615 {mcfisa_a|mcfisa_c|mcfusp|mcfemac, mcf51_ctrl, "51jg", 1},
616 {mcfisa_a|mcfisa_c|mcfusp, mcf51_ctrl, "51jm", 1},
617 {mcfisa_a|mcfisa_c|mcfusp|mcfmac, mcf51_ctrl, "51mm", 1},
618 {mcfisa_a|mcfisa_c|mcfusp, mcf51_ctrl, "51qe", 1},
619 {mcfisa_a|mcfisa_c|mcfusp|mcfemac, mcf51_ctrl, "51qm", 1},
620
621 {mcfisa_a, mcf_ctrl, "5200", 0},
622 {mcfisa_a, mcf_ctrl, "5202", 1},
623 {mcfisa_a, mcf_ctrl, "5204", 1},
624 {mcfisa_a, mcf5206_ctrl, "5206", 1},
625
626 {mcfisa_a|mcfhwdiv|mcfmac, mcf5206_ctrl, "5206e", 0},
627
628 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5208_ctrl, "5207", -1},
629 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5208_ctrl, "5208", 0},
630
631 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5210a_ctrl, "5210a", 0},
632 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5210a_ctrl, "5211a", 1},
633
634 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5213_ctrl, "5211", -1},
635 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5213_ctrl, "5212", -1},
636 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5213_ctrl, "5213", 0},
637
638 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5216_ctrl, "5214", -1},
639 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5216_ctrl, "5216", 0},
640 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5216_ctrl, "521x", 2},
641
642 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5221x_ctrl, "5221x", 0},
643
644 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf52223_ctrl, "52221", -1},
645 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf52223_ctrl, "52223", 0},
646
647 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52235_ctrl, "52230", -1},
648 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52235_ctrl, "52233", -1},
649 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52235_ctrl, "52234", -1},
650 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52235_ctrl, "52235", 0},
651
652 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5225_ctrl, "5224", -1},
653 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5225_ctrl, "5225", 0},
654
655 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52277_ctrl, "52274", -1},
656 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52277_ctrl, "52277", 0},
657
658 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "5232", -1},
659 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "5233", -1},
660 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "5234", -1},
661 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "5235", -1},
662 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "523x", 0},
663
664 {mcfisa_a|mcfhwdiv|mcfemac, mcf5249_ctrl, "5249", 0},
665 {mcfisa_a|mcfhwdiv|mcfemac, mcf5250_ctrl, "5250", 0},
666 {mcfisa_a|mcfhwdiv|mcfemac, mcf5253_ctrl, "5253", 0},
667
668 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52259_ctrl, "52252", -1},
669 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52259_ctrl, "52254", -1},
670 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52259_ctrl, "52255", -1},
671 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52259_ctrl, "52256", -1},
672 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52259_ctrl, "52258", -1},
673 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52259_ctrl, "52259", 0},
674
675 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5271_ctrl, "5270", -1},
676 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5271_ctrl, "5271", 0},
677
678 {mcfisa_a|mcfhwdiv|mcfmac, mcf5272_ctrl, "5272", 0},
679
680 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5275_ctrl, "5274", -1},
681 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5275_ctrl, "5275", 0},
682
683 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5282_ctrl, "5280", -1},
684 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5282_ctrl, "5281", -1},
685 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5282_ctrl, "5282", -1},
686 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5282_ctrl, "528x", 0},
687
688 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53011", -1},
689 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53012", -1},
690 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53013", -1},
691 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53014", -1},
692 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53015", -1},
693 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53016", -1},
694 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf53017_ctrl, "53017", 0},
695
696 {mcfisa_a|mcfhwdiv|mcfmac, mcf5307_ctrl, "5307", 0},
697
698 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5329_ctrl, "5327", -1},
699 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5329_ctrl, "5328", -1},
700 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5329_ctrl, "5329", -1},
701 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5329_ctrl, "532x", 0},
702
703 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5373_ctrl, "5372", -1},
704 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5373_ctrl, "5373", -1},
705 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5373_ctrl, "537x", 0},
706
707 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfmac, mcf5407_ctrl, "5407",0},
708
709 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54418_ctrl, "54410", -1},
710 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54418_ctrl, "54415", -1},
711 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54418_ctrl, "54416", -1},
712 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54418_ctrl, "54417", -1},
713 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54418_ctrl, "54418", 0},
714
715 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54450", -1},
716 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54451", -1},
717 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54452", -1},
718 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54453", -1},
719 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54454", -1},
720 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54455", 0},
721
722 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5470", -1},
723 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5471", -1},
724 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5472", -1},
725 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5473", -1},
726 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5474", -1},
727 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5475", -1},
728 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "547x", 0},
729
730 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5480", -1},
731 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5481", -1},
732 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5482", -1},
733 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5483", -1},
734 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5484", -1},
735 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5485", -1},
736 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "548x", 0},
737
738 {fido_a, fido_ctrl, "fidoa", 0},
739 {fido_a, fido_ctrl, "fido", 1},
740
741 {0,NULL,NULL, 0}
742 };
743
744 static const struct m68k_cpu *m68k_lookup_cpu
745 (const char *, const struct m68k_cpu *, int, int *);
746 static int m68k_set_arch (const char *, int, int);
747 static int m68k_set_cpu (const char *, int, int);
748 static int m68k_set_extension (const char *, int, int);
749 static void m68k_init_arch (void);
750
751 /* This is the assembler relaxation table for m68k. m68k is a rich CISC
752 architecture and we have a lot of relaxation modes. */
753
754 /* Macros used in the relaxation code. */
755 #define TAB(x,y) (((x) << 2) + (y))
756 #define TABTYPE(x) ((x) >> 2)
757
758 /* Relaxation states. */
759 #define BYTE 0
760 #define SHORT 1
761 #define LONG 2
762 #define SZ_UNDEF 3
763
764 /* Here are all the relaxation modes we support. First we can relax ordinary
765 branches. On 68020 and higher and on CPU32 all branch instructions take
766 three forms, so on these CPUs all branches always remain as such. When we
767 have to expand to the LONG form on a 68000, though, we substitute an
768 absolute jump instead. This is a direct replacement for unconditional
769 branches and a branch over a jump for conditional branches. However, if the
770 user requires PIC and disables this with --pcrel, we can only relax between
771 BYTE and SHORT forms, punting if that isn't enough. This gives us four
772 different relaxation modes for branches: */
773
774 #define BRANCHBWL 0 /* Branch byte, word, or long. */
775 #define BRABSJUNC 1 /* Absolute jump for LONG, unconditional. */
776 #define BRABSJCOND 2 /* Absolute jump for LONG, conditional. */
777 #define BRANCHBW 3 /* Branch byte or word. */
778
779 /* We also relax coprocessor branches and DBcc's. All CPUs that support
780 coprocessor branches support them in word and long forms, so we have only
781 one relaxation mode for them. DBcc's are word only on all CPUs. We can
782 relax them to the LONG form with a branch-around sequence. This sequence
783 can use a long branch (if available) or an absolute jump (if acceptable).
784 This gives us two relaxation modes. If long branches are not available and
785 absolute jumps are not acceptable, we don't relax DBcc's. */
786
787 #define FBRANCH 4 /* Coprocessor branch. */
788 #define DBCCLBR 5 /* DBcc relaxable with a long branch. */
789 #define DBCCABSJ 6 /* DBcc relaxable with an absolute jump. */
790
791 /* That's all for instruction relaxation. However, we also relax PC-relative
792 operands. Specifically, we have three operand relaxation modes. On the
793 68000 PC-relative operands can only be 16-bit, but on 68020 and higher and
794 on CPU32 they may be 16-bit or 32-bit. For the latter we relax between the
795 two. Also PC+displacement+index operands in their simple form (with a non-
796 suppressed index without memory indirection) are supported on all CPUs, but
797 on the 68000 the displacement can be 8-bit only, whereas on 68020 and higher
798 and on CPU32 we relax it to SHORT and LONG forms as well using the extended
799 form of the PC+displacement+index operand. Finally, some absolute operands
800 can be relaxed down to 16-bit PC-relative. */
801
802 #define PCREL1632 7 /* 16-bit or 32-bit PC-relative. */
803 #define PCINDEX 8 /* PC + displacement + index. */
804 #define ABSTOPCREL 9 /* Absolute relax down to 16-bit PC-relative. */
805
806 /* This relaxation is required for branches where there is no long
807 branch and we are in pcrel mode. We generate a bne/beq pair. */
808 #define BRANCHBWPL 10 /* Branch byte, word or pair of longs
809 */
810
811 /* Note that calls to frag_var need to specify the maximum expansion
812 needed; this is currently 12 bytes for bne/beq pair. */
813 #define FRAG_VAR_SIZE 12
814
815 /* The fields are:
816 How far Forward this mode will reach:
817 How far Backward this mode will reach:
818 How many bytes this mode will add to the size of the frag
819 Which mode to go to if the offset won't fit in this one
820
821 Please check tc-m68k.h:md_prepare_relax_scan if changing this table. */
822 relax_typeS md_relax_table[] =
823 {
824 { 127, -128, 0, TAB (BRANCHBWL, SHORT) },
825 { 32767, -32768, 2, TAB (BRANCHBWL, LONG) },
826 { 0, 0, 4, 0 },
827 { 1, 1, 0, 0 },
828
829 { 127, -128, 0, TAB (BRABSJUNC, SHORT) },
830 { 32767, -32768, 2, TAB (BRABSJUNC, LONG) },
831 { 0, 0, 4, 0 },
832 { 1, 1, 0, 0 },
833
834 { 127, -128, 0, TAB (BRABSJCOND, SHORT) },
835 { 32767, -32768, 2, TAB (BRABSJCOND, LONG) },
836 { 0, 0, 6, 0 },
837 { 1, 1, 0, 0 },
838
839 { 127, -128, 0, TAB (BRANCHBW, SHORT) },
840 { 0, 0, 2, 0 },
841 { 1, 1, 0, 0 },
842 { 1, 1, 0, 0 },
843
844 { 1, 1, 0, 0 }, /* FBRANCH doesn't come BYTE. */
845 { 32767, -32768, 2, TAB (FBRANCH, LONG) },
846 { 0, 0, 4, 0 },
847 { 1, 1, 0, 0 },
848
849 { 1, 1, 0, 0 }, /* DBCC doesn't come BYTE. */
850 { 32767, -32768, 2, TAB (DBCCLBR, LONG) },
851 { 0, 0, 10, 0 },
852 { 1, 1, 0, 0 },
853
854 { 1, 1, 0, 0 }, /* DBCC doesn't come BYTE. */
855 { 32767, -32768, 2, TAB (DBCCABSJ, LONG) },
856 { 0, 0, 10, 0 },
857 { 1, 1, 0, 0 },
858
859 { 1, 1, 0, 0 }, /* PCREL1632 doesn't come BYTE. */
860 { 32767, -32768, 2, TAB (PCREL1632, LONG) },
861 { 0, 0, 6, 0 },
862 { 1, 1, 0, 0 },
863
864 { 125, -130, 0, TAB (PCINDEX, SHORT) },
865 { 32765, -32770, 2, TAB (PCINDEX, LONG) },
866 { 0, 0, 4, 0 },
867 { 1, 1, 0, 0 },
868
869 { 1, 1, 0, 0 }, /* ABSTOPCREL doesn't come BYTE. */
870 { 32767, -32768, 2, TAB (ABSTOPCREL, LONG) },
871 { 0, 0, 4, 0 },
872 { 1, 1, 0, 0 },
873
874 { 127, -128, 0, TAB (BRANCHBWPL, SHORT) },
875 { 32767, -32768, 2, TAB (BRANCHBWPL, LONG) },
876 { 0, 0, 10, 0 },
877 { 1, 1, 0, 0 },
878 };
879
880 /* These are the machine dependent pseudo-ops. These are included so
881 the assembler can work on the output from the SUN C compiler, which
882 generates these. */
883
884 /* This table describes all the machine specific pseudo-ops the assembler
885 has to support. The fields are:
886 pseudo-op name without dot
887 function to call to execute this pseudo-op
888 Integer arg to pass to the function. */
889 const pseudo_typeS md_pseudo_table[] =
890 {
891 {"data1", s_data1, 0},
892 {"data2", s_data2, 0},
893 {"bss", s_bss, 0},
894 {"even", s_even, 0},
895 {"skip", s_space, 0},
896 {"proc", s_proc, 0},
897 #if defined (TE_SUN3) || defined (OBJ_ELF)
898 {"align", s_align_bytes, 0},
899 #endif
900 #ifdef OBJ_ELF
901 {"swbeg", s_ignore, 0},
902 {"long", m68k_elf_cons, 4},
903 #endif
904 {"extend", float_cons, 'x'},
905 {"ldouble", float_cons, 'x'},
906
907 {"arch", s_m68k_arch, 0},
908 {"cpu", s_m68k_cpu, 0},
909
910 /* The following pseudo-ops are supported for MRI compatibility. */
911 {"chip", s_chip, 0},
912 {"comline", s_space, 1},
913 {"fopt", s_fopt, 0},
914 {"mask2", s_ignore, 0},
915 {"opt", s_opt, 0},
916 {"reg", s_reg, 0},
917 {"restore", s_restore, 0},
918 {"save", s_save, 0},
919
920 {"if", s_mri_if, 0},
921 {"if.b", s_mri_if, 'b'},
922 {"if.w", s_mri_if, 'w'},
923 {"if.l", s_mri_if, 'l'},
924 {"else", s_mri_else, 0},
925 {"else.s", s_mri_else, 's'},
926 {"else.l", s_mri_else, 'l'},
927 {"endi", s_mri_endi, 0},
928 {"break", s_mri_break, 0},
929 {"break.s", s_mri_break, 's'},
930 {"break.l", s_mri_break, 'l'},
931 {"next", s_mri_next, 0},
932 {"next.s", s_mri_next, 's'},
933 {"next.l", s_mri_next, 'l'},
934 {"for", s_mri_for, 0},
935 {"for.b", s_mri_for, 'b'},
936 {"for.w", s_mri_for, 'w'},
937 {"for.l", s_mri_for, 'l'},
938 {"endf", s_mri_endf, 0},
939 {"repeat", s_mri_repeat, 0},
940 {"until", s_mri_until, 0},
941 {"until.b", s_mri_until, 'b'},
942 {"until.w", s_mri_until, 'w'},
943 {"until.l", s_mri_until, 'l'},
944 {"while", s_mri_while, 0},
945 {"while.b", s_mri_while, 'b'},
946 {"while.w", s_mri_while, 'w'},
947 {"while.l", s_mri_while, 'l'},
948 {"endw", s_mri_endw, 0},
949
950 {0, 0, 0}
951 };
952
953 /* The mote pseudo ops are put into the opcode table, since they
954 don't start with a . they look like opcodes to gas. */
955
956 const pseudo_typeS mote_pseudo_table[] =
957 {
958
959 {"dcl", cons, 4},
960 {"dc", cons, 2},
961 {"dcw", cons, 2},
962 {"dcb", cons, 1},
963
964 {"dsl", s_space, 4},
965 {"ds", s_space, 2},
966 {"dsw", s_space, 2},
967 {"dsb", s_space, 1},
968
969 {"xdef", s_globl, 0},
970 #ifdef OBJ_ELF
971 {"align", s_align_bytes, 0},
972 #else
973 {"align", s_align_ptwo, 0},
974 #endif
975 #ifdef M68KCOFF
976 {"sect", obj_coff_section, 0},
977 {"section", obj_coff_section, 0},
978 #endif
979 {0, 0, 0}
980 };
981
982 /* Truncate and sign-extend at 32 bits, so that building on a 64-bit host
983 gives identical results to a 32-bit host. */
984 #define TRUNC(X) ((valueT) (X) & 0xffffffff)
985 #define SEXT(X) ((TRUNC (X) ^ 0x80000000) - 0x80000000)
986
987 #define issbyte(x) ((valueT) SEXT (x) + 0x80 < 0x100)
988 #define isubyte(x) ((valueT) TRUNC (x) < 0x100)
989 #define issword(x) ((valueT) SEXT (x) + 0x8000 < 0x10000)
990 #define isuword(x) ((valueT) TRUNC (x) < 0x10000)
991
992 #define isbyte(x) ((valueT) SEXT (x) + 0xff < 0x1ff)
993 #define isword(x) ((valueT) SEXT (x) + 0xffff < 0x1ffff)
994 #define islong(x) (1)
995
996 static char notend_table[256];
997 static char alt_notend_table[256];
998 #define notend(s) \
999 (! (notend_table[(unsigned char) *s] \
1000 || (*s == ':' \
1001 && alt_notend_table[(unsigned char) s[1]])))
1002
1003 #ifdef OBJ_ELF
1004
1005 /* Return zero if the reference to SYMBOL from within the same segment may
1006 be relaxed. */
1007
1008 /* On an ELF system, we can't relax an externally visible symbol,
1009 because it may be overridden by a shared library. However, if
1010 TARGET_OS is "elf", then we presume that we are assembling for an
1011 embedded system, in which case we don't have to worry about shared
1012 libraries, and we can relax any external sym. */
1013
1014 #define relaxable_symbol(symbol) \
1015 (!((S_IS_EXTERNAL (symbol) && EXTERN_FORCE_RELOC) \
1016 || S_IS_WEAK (symbol)))
1017
1018 /* Compute the relocation code for a fixup of SIZE bytes, using pc
1019 relative relocation if PCREL is non-zero. PIC says whether a special
1020 pic relocation was requested. */
1021
1022 static bfd_reloc_code_real_type
1023 get_reloc_code (int size, int pcrel, enum pic_relocation pic)
1024 {
1025 switch (pic)
1026 {
1027 case pic_got_pcrel:
1028 switch (size)
1029 {
1030 case 1:
1031 return BFD_RELOC_8_GOT_PCREL;
1032 case 2:
1033 return BFD_RELOC_16_GOT_PCREL;
1034 case 4:
1035 return BFD_RELOC_32_GOT_PCREL;
1036 }
1037 break;
1038
1039 case pic_got_off:
1040 switch (size)
1041 {
1042 case 1:
1043 return BFD_RELOC_8_GOTOFF;
1044 case 2:
1045 return BFD_RELOC_16_GOTOFF;
1046 case 4:
1047 return BFD_RELOC_32_GOTOFF;
1048 }
1049 break;
1050
1051 case pic_plt_pcrel:
1052 switch (size)
1053 {
1054 case 1:
1055 return BFD_RELOC_8_PLT_PCREL;
1056 case 2:
1057 return BFD_RELOC_16_PLT_PCREL;
1058 case 4:
1059 return BFD_RELOC_32_PLT_PCREL;
1060 }
1061 break;
1062
1063 case pic_plt_off:
1064 switch (size)
1065 {
1066 case 1:
1067 return BFD_RELOC_8_PLTOFF;
1068 case 2:
1069 return BFD_RELOC_16_PLTOFF;
1070 case 4:
1071 return BFD_RELOC_32_PLTOFF;
1072 }
1073 break;
1074
1075 case pic_tls_gd:
1076 switch (size)
1077 {
1078 case 1:
1079 return BFD_RELOC_68K_TLS_GD8;
1080 case 2:
1081 return BFD_RELOC_68K_TLS_GD16;
1082 case 4:
1083 return BFD_RELOC_68K_TLS_GD32;
1084 }
1085 break;
1086
1087 case pic_tls_ldm:
1088 switch (size)
1089 {
1090 case 1:
1091 return BFD_RELOC_68K_TLS_LDM8;
1092 case 2:
1093 return BFD_RELOC_68K_TLS_LDM16;
1094 case 4:
1095 return BFD_RELOC_68K_TLS_LDM32;
1096 }
1097 break;
1098
1099 case pic_tls_ldo:
1100 switch (size)
1101 {
1102 case 1:
1103 return BFD_RELOC_68K_TLS_LDO8;
1104 case 2:
1105 return BFD_RELOC_68K_TLS_LDO16;
1106 case 4:
1107 return BFD_RELOC_68K_TLS_LDO32;
1108 }
1109 break;
1110
1111 case pic_tls_ie:
1112 switch (size)
1113 {
1114 case 1:
1115 return BFD_RELOC_68K_TLS_IE8;
1116 case 2:
1117 return BFD_RELOC_68K_TLS_IE16;
1118 case 4:
1119 return BFD_RELOC_68K_TLS_IE32;
1120 }
1121 break;
1122
1123 case pic_tls_le:
1124 switch (size)
1125 {
1126 case 1:
1127 return BFD_RELOC_68K_TLS_LE8;
1128 case 2:
1129 return BFD_RELOC_68K_TLS_LE16;
1130 case 4:
1131 return BFD_RELOC_68K_TLS_LE32;
1132 }
1133 break;
1134
1135 case pic_none:
1136 if (pcrel)
1137 {
1138 switch (size)
1139 {
1140 case 1:
1141 return BFD_RELOC_8_PCREL;
1142 case 2:
1143 return BFD_RELOC_16_PCREL;
1144 case 4:
1145 return BFD_RELOC_32_PCREL;
1146 }
1147 }
1148 else
1149 {
1150 switch (size)
1151 {
1152 case 1:
1153 return BFD_RELOC_8;
1154 case 2:
1155 return BFD_RELOC_16;
1156 case 4:
1157 return BFD_RELOC_32;
1158 }
1159 }
1160 }
1161
1162 if (pcrel)
1163 {
1164 if (pic == pic_none)
1165 as_bad (_("Can not do %d byte pc-relative relocation"), size);
1166 else
1167 as_bad (_("Can not do %d byte pc-relative pic relocation"), size);
1168 }
1169 else
1170 {
1171 if (pic == pic_none)
1172 as_bad (_("Can not do %d byte relocation"), size);
1173 else
1174 as_bad (_("Can not do %d byte pic relocation"), size);
1175 }
1176
1177 return BFD_RELOC_NONE;
1178 }
1179
1180 /* Here we decide which fixups can be adjusted to make them relative
1181 to the beginning of the section instead of the symbol. Basically
1182 we need to make sure that the dynamic relocations are done
1183 correctly, so in some cases we force the original symbol to be
1184 used. */
1185 int
1186 tc_m68k_fix_adjustable (fixS *fixP)
1187 {
1188 /* Adjust_reloc_syms doesn't know about the GOT. */
1189 switch (fixP->fx_r_type)
1190 {
1191 case BFD_RELOC_8_GOT_PCREL:
1192 case BFD_RELOC_16_GOT_PCREL:
1193 case BFD_RELOC_32_GOT_PCREL:
1194 case BFD_RELOC_8_GOTOFF:
1195 case BFD_RELOC_16_GOTOFF:
1196 case BFD_RELOC_32_GOTOFF:
1197 case BFD_RELOC_8_PLT_PCREL:
1198 case BFD_RELOC_16_PLT_PCREL:
1199 case BFD_RELOC_32_PLT_PCREL:
1200 case BFD_RELOC_8_PLTOFF:
1201 case BFD_RELOC_16_PLTOFF:
1202 case BFD_RELOC_32_PLTOFF:
1203 case BFD_RELOC_68K_TLS_GD32:
1204 case BFD_RELOC_68K_TLS_GD16:
1205 case BFD_RELOC_68K_TLS_GD8:
1206 case BFD_RELOC_68K_TLS_LDM32:
1207 case BFD_RELOC_68K_TLS_LDM16:
1208 case BFD_RELOC_68K_TLS_LDM8:
1209 case BFD_RELOC_68K_TLS_LDO32:
1210 case BFD_RELOC_68K_TLS_LDO16:
1211 case BFD_RELOC_68K_TLS_LDO8:
1212 case BFD_RELOC_68K_TLS_IE32:
1213 case BFD_RELOC_68K_TLS_IE16:
1214 case BFD_RELOC_68K_TLS_IE8:
1215 case BFD_RELOC_68K_TLS_LE32:
1216 case BFD_RELOC_68K_TLS_LE16:
1217 case BFD_RELOC_68K_TLS_LE8:
1218 return 0;
1219
1220 case BFD_RELOC_VTABLE_INHERIT:
1221 case BFD_RELOC_VTABLE_ENTRY:
1222 return 0;
1223
1224 default:
1225 return 1;
1226 }
1227 }
1228
1229 #else /* !OBJ_ELF */
1230
1231 #define get_reloc_code(SIZE,PCREL,OTHER) NO_RELOC
1232
1233 /* PR gas/3041 Weak symbols are not relaxable
1234 because they must be treated as extern. */
1235 #define relaxable_symbol(symbol) (!(S_IS_WEAK (symbol)))
1236
1237 #endif /* OBJ_ELF */
1238
1239 arelent *
1240 tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp)
1241 {
1242 arelent *reloc;
1243 bfd_reloc_code_real_type code;
1244
1245 /* If the tcbit is set, then this was a fixup of a negative value
1246 that was never resolved. We do not have a reloc to handle this,
1247 so just return. We assume that other code will have detected this
1248 situation and produced a helpful error message, so we just tell the
1249 user that the reloc cannot be produced. */
1250 if (fixp->fx_tcbit)
1251 {
1252 if (fixp->fx_addsy)
1253 as_bad_where (fixp->fx_file, fixp->fx_line,
1254 _("Unable to produce reloc against symbol '%s'"),
1255 S_GET_NAME (fixp->fx_addsy));
1256 return NULL;
1257 }
1258
1259 if (fixp->fx_r_type != BFD_RELOC_NONE)
1260 {
1261 code = fixp->fx_r_type;
1262
1263 /* Since DIFF_EXPR_OK is defined in tc-m68k.h, it is possible
1264 that fixup_segment converted a non-PC relative reloc into a
1265 PC relative reloc. In such a case, we need to convert the
1266 reloc code. */
1267 if (fixp->fx_pcrel)
1268 {
1269 switch (code)
1270 {
1271 case BFD_RELOC_8:
1272 code = BFD_RELOC_8_PCREL;
1273 break;
1274 case BFD_RELOC_16:
1275 code = BFD_RELOC_16_PCREL;
1276 break;
1277 case BFD_RELOC_32:
1278 code = BFD_RELOC_32_PCREL;
1279 break;
1280 case BFD_RELOC_8_PCREL:
1281 case BFD_RELOC_16_PCREL:
1282 case BFD_RELOC_32_PCREL:
1283 case BFD_RELOC_8_GOT_PCREL:
1284 case BFD_RELOC_16_GOT_PCREL:
1285 case BFD_RELOC_32_GOT_PCREL:
1286 case BFD_RELOC_8_GOTOFF:
1287 case BFD_RELOC_16_GOTOFF:
1288 case BFD_RELOC_32_GOTOFF:
1289 case BFD_RELOC_8_PLT_PCREL:
1290 case BFD_RELOC_16_PLT_PCREL:
1291 case BFD_RELOC_32_PLT_PCREL:
1292 case BFD_RELOC_8_PLTOFF:
1293 case BFD_RELOC_16_PLTOFF:
1294 case BFD_RELOC_32_PLTOFF:
1295 case BFD_RELOC_68K_TLS_GD32:
1296 case BFD_RELOC_68K_TLS_GD16:
1297 case BFD_RELOC_68K_TLS_GD8:
1298 case BFD_RELOC_68K_TLS_LDM32:
1299 case BFD_RELOC_68K_TLS_LDM16:
1300 case BFD_RELOC_68K_TLS_LDM8:
1301 case BFD_RELOC_68K_TLS_LDO32:
1302 case BFD_RELOC_68K_TLS_LDO16:
1303 case BFD_RELOC_68K_TLS_LDO8:
1304 case BFD_RELOC_68K_TLS_IE32:
1305 case BFD_RELOC_68K_TLS_IE16:
1306 case BFD_RELOC_68K_TLS_IE8:
1307 case BFD_RELOC_68K_TLS_LE32:
1308 case BFD_RELOC_68K_TLS_LE16:
1309 case BFD_RELOC_68K_TLS_LE8:
1310 break;
1311 default:
1312 as_bad_where (fixp->fx_file, fixp->fx_line,
1313 _("Cannot make %s relocation PC relative"),
1314 bfd_get_reloc_code_name (code));
1315 }
1316 }
1317 }
1318 else
1319 {
1320 #define F(SZ,PCREL) (((SZ) << 1) + (PCREL))
1321 switch (F (fixp->fx_size, fixp->fx_pcrel))
1322 {
1323 #define MAP(SZ,PCREL,TYPE) case F(SZ,PCREL): code = (TYPE); break
1324 MAP (1, 0, BFD_RELOC_8);
1325 MAP (2, 0, BFD_RELOC_16);
1326 MAP (4, 0, BFD_RELOC_32);
1327 MAP (1, 1, BFD_RELOC_8_PCREL);
1328 MAP (2, 1, BFD_RELOC_16_PCREL);
1329 MAP (4, 1, BFD_RELOC_32_PCREL);
1330 default:
1331 abort ();
1332 }
1333 }
1334 #undef F
1335 #undef MAP
1336
1337 reloc = (arelent *) xmalloc (sizeof (arelent));
1338 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
1339 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
1340 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
1341 #ifndef OBJ_ELF
1342 if (OUTPUT_FLAVOR == bfd_target_aout_flavour
1343 && fixp->fx_addsy
1344 && S_IS_WEAK (fixp->fx_addsy)
1345 && ! bfd_is_und_section (S_GET_SEGMENT (fixp->fx_addsy)))
1346 {
1347 /* PR gas/3041 References to weak symbols must be treated as extern
1348 in order to be overridable by the linker, even if they are defined
1349 in the same object file. So the original addend must be written
1350 "as is" into the output section without further processing.
1351 The addend value must be hacked here in order to force
1352 bfd_install_relocation() to write the original value into the
1353 output section.
1354 1) MD_APPLY_SYM_VALUE() is set to 1 for m68k/a.out, so the symbol
1355 value has already been added to the addend in fixup_segment(). We
1356 have to remove it.
1357 2) bfd_install_relocation() will incorrectly treat this symbol as
1358 resolved, so it will write the symbol value plus its addend and
1359 section VMA. As a workaround we can tweak the addend value here in
1360 order to get the original value in the section after the call to
1361 bfd_install_relocation(). */
1362 reloc->addend = fixp->fx_addnumber
1363 /* Fix because of MD_APPLY_SYM_VALUE() */
1364 - S_GET_VALUE (fixp->fx_addsy)
1365 /* Fix for bfd_install_relocation() */
1366 - (S_GET_VALUE (fixp->fx_addsy)
1367 + S_GET_SEGMENT (fixp->fx_addsy)->vma);
1368 }
1369 else if (fixp->fx_pcrel)
1370 reloc->addend = fixp->fx_addnumber;
1371 else
1372 reloc->addend = 0;
1373 #else
1374 if (!fixp->fx_pcrel)
1375 reloc->addend = fixp->fx_addnumber;
1376 else
1377 reloc->addend = (section->vma
1378 + fixp->fx_pcrel_adjust
1379 + fixp->fx_addnumber
1380 + md_pcrel_from (fixp));
1381 #endif
1382
1383 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
1384 gas_assert (reloc->howto != 0);
1385
1386 return reloc;
1387 }
1388
1389 /* Handle of the OPCODE hash table. NULL means any use before
1390 m68k_ip_begin() will crash. */
1391 static struct hash_control *op_hash;
1392 \f
1393 /* Assemble an m68k instruction. */
1394
1395 static void
1396 m68k_ip (char *instring)
1397 {
1398 char *p;
1399 struct m68k_op *opP;
1400 const struct m68k_incant *opcode;
1401 const char *s;
1402 int tmpreg = 0, baseo = 0, outro = 0, nextword;
1403 char *pdot, *pdotmove;
1404 enum m68k_size siz1, siz2;
1405 char c;
1406 int losing;
1407 int opsfound;
1408 struct m68k_op operands_backup[6];
1409 LITTLENUM_TYPE words[6];
1410 LITTLENUM_TYPE *wordp;
1411 unsigned long ok_arch = 0;
1412
1413 if (*instring == ' ')
1414 instring++; /* Skip leading whitespace. */
1415
1416 /* Scan up to end of operation-code, which MUST end in end-of-string
1417 or exactly 1 space. */
1418 pdot = 0;
1419 for (p = instring; *p != '\0'; p++)
1420 {
1421 if (*p == ' ')
1422 break;
1423 if (*p == '.')
1424 pdot = p;
1425 }
1426
1427 if (p == instring)
1428 {
1429 the_ins.error = _("No operator");
1430 return;
1431 }
1432
1433 /* p now points to the end of the opcode name, probably whitespace.
1434 Make sure the name is null terminated by clobbering the
1435 whitespace, look it up in the hash table, then fix it back.
1436 Remove a dot, first, since the opcode tables have none. */
1437 if (pdot != NULL)
1438 {
1439 for (pdotmove = pdot; pdotmove < p; pdotmove++)
1440 *pdotmove = pdotmove[1];
1441 p--;
1442 }
1443
1444 c = *p;
1445 *p = '\0';
1446 opcode = (const struct m68k_incant *) hash_find (op_hash, instring);
1447 *p = c;
1448
1449 if (pdot != NULL)
1450 {
1451 for (pdotmove = p; pdotmove > pdot; pdotmove--)
1452 *pdotmove = pdotmove[-1];
1453 *pdot = '.';
1454 ++p;
1455 }
1456
1457 if (opcode == NULL)
1458 {
1459 the_ins.error = _("Unknown operator");
1460 return;
1461 }
1462
1463 /* Found a legitimate opcode, start matching operands. */
1464 while (*p == ' ')
1465 ++p;
1466
1467 if (opcode->m_operands == 0)
1468 {
1469 char *old = input_line_pointer;
1470 *old = '\n';
1471 input_line_pointer = p;
1472 /* Ahh - it's a motorola style psuedo op. */
1473 mote_pseudo_table[opcode->m_opnum].poc_handler
1474 (mote_pseudo_table[opcode->m_opnum].poc_val);
1475 input_line_pointer = old;
1476 *old = 0;
1477
1478 return;
1479 }
1480
1481 if (flag_mri && opcode->m_opnum == 0)
1482 {
1483 /* In MRI mode, random garbage is allowed after an instruction
1484 which accepts no operands. */
1485 the_ins.args = opcode->m_operands;
1486 the_ins.numargs = opcode->m_opnum;
1487 the_ins.numo = opcode->m_codenum;
1488 the_ins.opcode[0] = getone (opcode);
1489 the_ins.opcode[1] = gettwo (opcode);
1490 return;
1491 }
1492
1493 for (opP = &the_ins.operands[0]; *p; opP++)
1494 {
1495 p = crack_operand (p, opP);
1496
1497 if (opP->error)
1498 {
1499 the_ins.error = opP->error;
1500 return;
1501 }
1502 }
1503
1504 opsfound = opP - &the_ins.operands[0];
1505
1506 /* This ugly hack is to support the floating pt opcodes in their
1507 standard form. Essentially, we fake a first enty of type COP#1 */
1508 if (opcode->m_operands[0] == 'I')
1509 {
1510 int n;
1511
1512 for (n = opsfound; n > 0; --n)
1513 the_ins.operands[n] = the_ins.operands[n - 1];
1514
1515 memset (&the_ins.operands[0], '\0', sizeof (the_ins.operands[0]));
1516 the_ins.operands[0].mode = CONTROL;
1517 the_ins.operands[0].reg = m68k_float_copnum;
1518 opsfound++;
1519 }
1520
1521 /* We've got the operands. Find an opcode that'll accept them. */
1522 for (losing = 0;;)
1523 {
1524 /* If we didn't get the right number of ops, or we have no
1525 common model with this pattern then reject this pattern. */
1526
1527 ok_arch |= opcode->m_arch;
1528 if (opsfound != opcode->m_opnum
1529 || ((opcode->m_arch & current_architecture) == 0))
1530 ++losing;
1531 else
1532 {
1533 int i;
1534
1535 /* Make a copy of the operands of this insn so that
1536 we can modify them safely, should we want to. */
1537 gas_assert (opsfound <= (int) ARRAY_SIZE (operands_backup));
1538 for (i = 0; i < opsfound; i++)
1539 operands_backup[i] = the_ins.operands[i];
1540
1541 for (s = opcode->m_operands, opP = &operands_backup[0];
1542 *s && !losing;
1543 s += 2, opP++)
1544 {
1545 /* Warning: this switch is huge! */
1546 /* I've tried to organize the cases into this order:
1547 non-alpha first, then alpha by letter. Lower-case
1548 goes directly before uppercase counterpart. */
1549 /* Code with multiple case ...: gets sorted by the lowest
1550 case ... it belongs to. I hope this makes sense. */
1551 switch (*s)
1552 {
1553 case '!':
1554 switch (opP->mode)
1555 {
1556 case IMMED:
1557 case DREG:
1558 case AREG:
1559 case FPREG:
1560 case CONTROL:
1561 case AINC:
1562 case ADEC:
1563 case REGLST:
1564 losing++;
1565 break;
1566 default:
1567 break;
1568 }
1569 break;
1570
1571 case '<':
1572 switch (opP->mode)
1573 {
1574 case DREG:
1575 case AREG:
1576 case FPREG:
1577 case CONTROL:
1578 case IMMED:
1579 case ADEC:
1580 case REGLST:
1581 losing++;
1582 break;
1583 default:
1584 break;
1585 }
1586 break;
1587
1588 case '>':
1589 switch (opP->mode)
1590 {
1591 case DREG:
1592 case AREG:
1593 case FPREG:
1594 case CONTROL:
1595 case IMMED:
1596 case AINC:
1597 case REGLST:
1598 losing++;
1599 break;
1600 case ABSL:
1601 break;
1602 default:
1603 if (opP->reg == PC
1604 || opP->reg == ZPC)
1605 losing++;
1606 break;
1607 }
1608 break;
1609
1610 case 'm':
1611 switch (opP->mode)
1612 {
1613 case DREG:
1614 case AREG:
1615 case AINDR:
1616 case AINC:
1617 case ADEC:
1618 break;
1619 default:
1620 losing++;
1621 }
1622 break;
1623
1624 case 'n':
1625 switch (opP->mode)
1626 {
1627 case DISP:
1628 break;
1629 default:
1630 losing++;
1631 }
1632 break;
1633
1634 case 'o':
1635 switch (opP->mode)
1636 {
1637 case BASE:
1638 case ABSL:
1639 case IMMED:
1640 break;
1641 default:
1642 losing++;
1643 }
1644 break;
1645
1646 case 'p':
1647 switch (opP->mode)
1648 {
1649 case DREG:
1650 case AREG:
1651 case AINDR:
1652 case AINC:
1653 case ADEC:
1654 break;
1655 case DISP:
1656 if (opP->reg == PC || opP->reg == ZPC)
1657 losing++;
1658 break;
1659 default:
1660 losing++;
1661 }
1662 break;
1663
1664 case 'q':
1665 switch (opP->mode)
1666 {
1667 case DREG:
1668 case AINDR:
1669 case AINC:
1670 case ADEC:
1671 break;
1672 case DISP:
1673 if (opP->reg == PC || opP->reg == ZPC)
1674 losing++;
1675 break;
1676 default:
1677 losing++;
1678 break;
1679 }
1680 break;
1681
1682 case 'v':
1683 switch (opP->mode)
1684 {
1685 case DREG:
1686 case AINDR:
1687 case AINC:
1688 case ADEC:
1689 case ABSL:
1690 break;
1691 case DISP:
1692 if (opP->reg == PC || opP->reg == ZPC)
1693 losing++;
1694 break;
1695 default:
1696 losing++;
1697 break;
1698 }
1699 break;
1700
1701 case '#':
1702 if (opP->mode != IMMED)
1703 losing++;
1704 else if (s[1] == 'b'
1705 && ! isvar (&opP->disp)
1706 && (opP->disp.exp.X_op != O_constant
1707 || ! isbyte (opP->disp.exp.X_add_number)))
1708 losing++;
1709 else if (s[1] == 'B'
1710 && ! isvar (&opP->disp)
1711 && (opP->disp.exp.X_op != O_constant
1712 || ! issbyte (opP->disp.exp.X_add_number)))
1713 losing++;
1714 else if (s[1] == 'w'
1715 && ! isvar (&opP->disp)
1716 && (opP->disp.exp.X_op != O_constant
1717 || ! isword (opP->disp.exp.X_add_number)))
1718 losing++;
1719 else if (s[1] == 'W'
1720 && ! isvar (&opP->disp)
1721 && (opP->disp.exp.X_op != O_constant
1722 || ! issword (opP->disp.exp.X_add_number)))
1723 losing++;
1724 break;
1725
1726 case '^':
1727 case 'T':
1728 if (opP->mode != IMMED)
1729 losing++;
1730 break;
1731
1732 case '$':
1733 if (opP->mode == AREG
1734 || opP->mode == CONTROL
1735 || opP->mode == FPREG
1736 || opP->mode == IMMED
1737 || opP->mode == REGLST
1738 || (opP->mode != ABSL
1739 && (opP->reg == PC
1740 || opP->reg == ZPC)))
1741 losing++;
1742 break;
1743
1744 case '%':
1745 if (opP->mode == CONTROL
1746 || opP->mode == FPREG
1747 || opP->mode == REGLST
1748 || opP->mode == IMMED
1749 || (opP->mode != ABSL
1750 && (opP->reg == PC
1751 || opP->reg == ZPC)))
1752 losing++;
1753 break;
1754
1755 case '&':
1756 switch (opP->mode)
1757 {
1758 case DREG:
1759 case AREG:
1760 case FPREG:
1761 case CONTROL:
1762 case IMMED:
1763 case AINC:
1764 case ADEC:
1765 case REGLST:
1766 losing++;
1767 break;
1768 case ABSL:
1769 break;
1770 default:
1771 if (opP->reg == PC
1772 || opP->reg == ZPC)
1773 losing++;
1774 break;
1775 }
1776 break;
1777
1778 case '*':
1779 if (opP->mode == CONTROL
1780 || opP->mode == FPREG
1781 || opP->mode == REGLST)
1782 losing++;
1783 break;
1784
1785 case '+':
1786 if (opP->mode != AINC)
1787 losing++;
1788 break;
1789
1790 case '-':
1791 if (opP->mode != ADEC)
1792 losing++;
1793 break;
1794
1795 case '/':
1796 switch (opP->mode)
1797 {
1798 case AREG:
1799 case CONTROL:
1800 case FPREG:
1801 case AINC:
1802 case ADEC:
1803 case IMMED:
1804 case REGLST:
1805 losing++;
1806 break;
1807 default:
1808 break;
1809 }
1810 break;
1811
1812 case ';':
1813 switch (opP->mode)
1814 {
1815 case AREG:
1816 case CONTROL:
1817 case FPREG:
1818 case REGLST:
1819 losing++;
1820 break;
1821 default:
1822 break;
1823 }
1824 break;
1825
1826 case '?':
1827 switch (opP->mode)
1828 {
1829 case AREG:
1830 case CONTROL:
1831 case FPREG:
1832 case AINC:
1833 case ADEC:
1834 case IMMED:
1835 case REGLST:
1836 losing++;
1837 break;
1838 case ABSL:
1839 break;
1840 default:
1841 if (opP->reg == PC || opP->reg == ZPC)
1842 losing++;
1843 break;
1844 }
1845 break;
1846
1847 case '@':
1848 switch (opP->mode)
1849 {
1850 case AREG:
1851 case CONTROL:
1852 case FPREG:
1853 case IMMED:
1854 case REGLST:
1855 losing++;
1856 break;
1857 default:
1858 break;
1859 }
1860 break;
1861
1862 case '~': /* For now! (JF FOO is this right?) */
1863 switch (opP->mode)
1864 {
1865 case DREG:
1866 case AREG:
1867 case CONTROL:
1868 case FPREG:
1869 case IMMED:
1870 case REGLST:
1871 losing++;
1872 break;
1873 case ABSL:
1874 break;
1875 default:
1876 if (opP->reg == PC
1877 || opP->reg == ZPC)
1878 losing++;
1879 break;
1880 }
1881 break;
1882
1883 case '3':
1884 if (opP->mode != CONTROL
1885 || (opP->reg != TT0 && opP->reg != TT1))
1886 losing++;
1887 break;
1888
1889 case 'A':
1890 if (opP->mode != AREG)
1891 losing++;
1892 break;
1893
1894 case 'a':
1895 if (opP->mode != AINDR)
1896 ++losing;
1897 break;
1898
1899 case '4':
1900 if (opP->mode != AINDR && opP->mode != AINC && opP->mode != ADEC
1901 && (opP->mode != DISP
1902 || opP->reg < ADDR0
1903 || opP->reg > ADDR7))
1904 ++losing;
1905 break;
1906
1907 case 'B': /* FOO */
1908 if (opP->mode != ABSL
1909 || (flag_long_jumps
1910 && strncmp (instring, "jbsr", 4) == 0))
1911 losing++;
1912 break;
1913
1914 case 'b':
1915 switch (opP->mode)
1916 {
1917 case IMMED:
1918 case ABSL:
1919 case AREG:
1920 case FPREG:
1921 case CONTROL:
1922 case POST:
1923 case PRE:
1924 case REGLST:
1925 losing++;
1926 break;
1927 default:
1928 break;
1929 }
1930 break;
1931
1932 case 'C':
1933 if (opP->mode != CONTROL || opP->reg != CCR)
1934 losing++;
1935 break;
1936
1937 case 'd':
1938 if (opP->mode != DISP
1939 || opP->reg < ADDR0
1940 || opP->reg > ADDR7)
1941 losing++;
1942 break;
1943
1944 case 'D':
1945 if (opP->mode != DREG)
1946 losing++;
1947 break;
1948
1949 case 'E':
1950 if (opP->reg != ACC)
1951 losing++;
1952 break;
1953
1954 case 'e':
1955 if (opP->reg != ACC && opP->reg != ACC1
1956 && opP->reg != ACC2 && opP->reg != ACC3)
1957 losing++;
1958 break;
1959
1960 case 'F':
1961 if (opP->mode != FPREG)
1962 losing++;
1963 break;
1964
1965 case 'G':
1966 if (opP->reg != MACSR)
1967 losing++;
1968 break;
1969
1970 case 'g':
1971 if (opP->reg != ACCEXT01 && opP->reg != ACCEXT23)
1972 losing++;
1973 break;
1974
1975 case 'H':
1976 if (opP->reg != MASK)
1977 losing++;
1978 break;
1979
1980 case 'I':
1981 if (opP->mode != CONTROL
1982 || opP->reg < COP0
1983 || opP->reg > COP7)
1984 losing++;
1985 break;
1986
1987 case 'i':
1988 if (opP->mode != LSH && opP->mode != RSH)
1989 losing++;
1990 break;
1991
1992 case 'J':
1993 if (opP->mode != CONTROL
1994 || opP->reg < USP
1995 || opP->reg > last_movec_reg
1996 || !control_regs)
1997 losing++;
1998 else
1999 {
2000 const enum m68k_register *rp;
2001
2002 for (rp = control_regs; *rp; rp++)
2003 {
2004 if (*rp == opP->reg)
2005 break;
2006 /* In most CPUs RAMBAR refers to control reg
2007 c05 (RAMBAR1), but a few CPUs have it
2008 refer to c04 (RAMBAR0). */
2009 else if (*rp == RAMBAR_ALT && opP->reg == RAMBAR)
2010 {
2011 opP->reg = RAMBAR_ALT;
2012 break;
2013 }
2014 }
2015 if (*rp == 0)
2016 losing++;
2017 }
2018 break;
2019
2020 case 'k':
2021 if (opP->mode != IMMED)
2022 losing++;
2023 break;
2024
2025 case 'l':
2026 case 'L':
2027 if (opP->mode == DREG
2028 || opP->mode == AREG
2029 || opP->mode == FPREG)
2030 {
2031 if (s[1] == '8')
2032 losing++;
2033 else
2034 {
2035 switch (opP->mode)
2036 {
2037 case DREG:
2038 opP->mask = 1 << (opP->reg - DATA0);
2039 break;
2040 case AREG:
2041 opP->mask = 1 << (opP->reg - ADDR0 + 8);
2042 break;
2043 case FPREG:
2044 opP->mask = 1 << (opP->reg - FP0 + 16);
2045 break;
2046 default:
2047 abort ();
2048 }
2049 opP->mode = REGLST;
2050 }
2051 }
2052 else if (opP->mode == CONTROL)
2053 {
2054 if (s[1] != '8')
2055 losing++;
2056 else
2057 {
2058 switch (opP->reg)
2059 {
2060 case FPI:
2061 opP->mask = 1 << 24;
2062 break;
2063 case FPS:
2064 opP->mask = 1 << 25;
2065 break;
2066 case FPC:
2067 opP->mask = 1 << 26;
2068 break;
2069 default:
2070 losing++;
2071 break;
2072 }
2073 opP->mode = REGLST;
2074 }
2075 }
2076 else if (opP->mode != REGLST)
2077 losing++;
2078 else if (s[1] == '8' && (opP->mask & 0x0ffffff) != 0)
2079 losing++;
2080 else if (s[1] == '3' && (opP->mask & 0x7000000) != 0)
2081 losing++;
2082 break;
2083
2084 case 'M':
2085 if (opP->mode != IMMED)
2086 losing++;
2087 else if (opP->disp.exp.X_op != O_constant
2088 || ! issbyte (opP->disp.exp.X_add_number))
2089 losing++;
2090 else if (! m68k_quick
2091 && instring[3] != 'q'
2092 && instring[4] != 'q')
2093 losing++;
2094 break;
2095
2096 case 'O':
2097 if (opP->mode != DREG
2098 && opP->mode != IMMED
2099 && opP->mode != ABSL)
2100 losing++;
2101 break;
2102
2103 case 'Q':
2104 if (opP->mode != IMMED)
2105 losing++;
2106 else if (opP->disp.exp.X_op != O_constant
2107 || TRUNC (opP->disp.exp.X_add_number) - 1 > 7)
2108 losing++;
2109 else if (! m68k_quick
2110 && (strncmp (instring, "add", 3) == 0
2111 || strncmp (instring, "sub", 3) == 0)
2112 && instring[3] != 'q')
2113 losing++;
2114 break;
2115
2116 case 'R':
2117 if (opP->mode != DREG && opP->mode != AREG)
2118 losing++;
2119 break;
2120
2121 case 'r':
2122 if (opP->mode != AINDR
2123 && (opP->mode != BASE
2124 || (opP->reg != 0
2125 && opP->reg != ZADDR0)
2126 || opP->disp.exp.X_op != O_absent
2127 || ((opP->index.reg < DATA0
2128 || opP->index.reg > DATA7)
2129 && (opP->index.reg < ADDR0
2130 || opP->index.reg > ADDR7))
2131 || opP->index.size != SIZE_UNSPEC
2132 || opP->index.scale != 1))
2133 losing++;
2134 break;
2135
2136 case 's':
2137 if (opP->mode != CONTROL
2138 || ! (opP->reg == FPI
2139 || opP->reg == FPS
2140 || opP->reg == FPC))
2141 losing++;
2142 break;
2143
2144 case 'S':
2145 if (opP->mode != CONTROL || opP->reg != SR)
2146 losing++;
2147 break;
2148
2149 case 't':
2150 if (opP->mode != IMMED)
2151 losing++;
2152 else if (opP->disp.exp.X_op != O_constant
2153 || TRUNC (opP->disp.exp.X_add_number) > 7)
2154 losing++;
2155 break;
2156
2157 case 'U':
2158 if (opP->mode != CONTROL || opP->reg != USP)
2159 losing++;
2160 break;
2161
2162 case 'x':
2163 if (opP->mode != IMMED)
2164 losing++;
2165 else if (opP->disp.exp.X_op != O_constant
2166 || (TRUNC (opP->disp.exp.X_add_number) != 0xffffffff
2167 && TRUNC (opP->disp.exp.X_add_number) - 1 > 6))
2168 losing++;
2169 break;
2170
2171 case 'j':
2172 if (opP->mode != IMMED)
2173 losing++;
2174 else if (opP->disp.exp.X_op != O_constant
2175 || TRUNC (opP->disp.exp.X_add_number) - 1 > 7)
2176 losing++;
2177 break;
2178
2179 case 'K':
2180 if (opP->mode != IMMED)
2181 losing++;
2182 else if (opP->disp.exp.X_op != O_constant
2183 || TRUNC (opP->disp.exp.X_add_number) > 511)
2184 losing++;
2185 break;
2186
2187 /* JF these are out of order. We could put them
2188 in order if we were willing to put up with
2189 bunches of #ifdef m68851s in the code.
2190
2191 Don't forget that you need these operands
2192 to use 68030 MMU instructions. */
2193 #ifndef NO_68851
2194 /* Memory addressing mode used by pflushr. */
2195 case '|':
2196 if (opP->mode == CONTROL
2197 || opP->mode == FPREG
2198 || opP->mode == DREG
2199 || opP->mode == AREG
2200 || opP->mode == REGLST)
2201 losing++;
2202 /* We should accept immediate operands, but they
2203 supposedly have to be quad word, and we don't
2204 handle that. I would like to see what a Motorola
2205 assembler does before doing something here. */
2206 if (opP->mode == IMMED)
2207 losing++;
2208 break;
2209
2210 case 'f':
2211 if (opP->mode != CONTROL
2212 || (opP->reg != SFC && opP->reg != DFC))
2213 losing++;
2214 break;
2215
2216 case '0':
2217 if (opP->mode != CONTROL || opP->reg != TC)
2218 losing++;
2219 break;
2220
2221 case '1':
2222 if (opP->mode != CONTROL || opP->reg != AC)
2223 losing++;
2224 break;
2225
2226 case '2':
2227 if (opP->mode != CONTROL
2228 || (opP->reg != CAL
2229 && opP->reg != VAL
2230 && opP->reg != SCC))
2231 losing++;
2232 break;
2233
2234 case 'V':
2235 if (opP->mode != CONTROL
2236 || opP->reg != VAL)
2237 losing++;
2238 break;
2239
2240 case 'W':
2241 if (opP->mode != CONTROL
2242 || (opP->reg != DRP
2243 && opP->reg != SRP
2244 && opP->reg != CRP))
2245 losing++;
2246 break;
2247
2248 case 'w':
2249 switch (opP->mode)
2250 {
2251 case IMMED:
2252 case ABSL:
2253 case AREG:
2254 case DREG:
2255 case FPREG:
2256 case CONTROL:
2257 case POST:
2258 case PRE:
2259 case REGLST:
2260 losing++;
2261 break;
2262 default:
2263 break;
2264 }
2265 break;
2266
2267 case 'X':
2268 if (opP->mode != CONTROL
2269 || (!(opP->reg >= BAD && opP->reg <= BAD + 7)
2270 && !(opP->reg >= BAC && opP->reg <= BAC + 7)))
2271 losing++;
2272 break;
2273
2274 case 'Y':
2275 if (opP->mode != CONTROL || opP->reg != PSR)
2276 losing++;
2277 break;
2278
2279 case 'Z':
2280 if (opP->mode != CONTROL || opP->reg != PCSR)
2281 losing++;
2282 break;
2283 #endif
2284 case 'c':
2285 if (opP->mode != CONTROL
2286 || (opP->reg != NC
2287 && opP->reg != IC
2288 && opP->reg != DC
2289 && opP->reg != BC))
2290 losing++;
2291 break;
2292
2293 case '_':
2294 if (opP->mode != ABSL)
2295 ++losing;
2296 break;
2297
2298 case 'u':
2299 if (opP->reg < DATA0L || opP->reg > ADDR7U)
2300 losing++;
2301 /* FIXME: kludge instead of fixing parser:
2302 upper/lower registers are *not* CONTROL
2303 registers, but ordinary ones. */
2304 if ((opP->reg >= DATA0L && opP->reg <= DATA7L)
2305 || (opP->reg >= DATA0U && opP->reg <= DATA7U))
2306 opP->mode = DREG;
2307 else
2308 opP->mode = AREG;
2309 break;
2310
2311 case 'y':
2312 if (!(opP->mode == AINDR
2313 || (opP->mode == DISP
2314 && !(opP->reg == PC || opP->reg == ZPC))))
2315 losing++;
2316 break;
2317
2318 case 'z':
2319 if (!(opP->mode == AINDR || opP->mode == DISP))
2320 losing++;
2321 break;
2322
2323 default:
2324 abort ();
2325 }
2326
2327 if (losing)
2328 break;
2329 }
2330
2331 /* Since we have found the correct instruction, copy
2332 in the modifications that we may have made. */
2333 if (!losing)
2334 for (i = 0; i < opsfound; i++)
2335 the_ins.operands[i] = operands_backup[i];
2336 }
2337
2338 if (!losing)
2339 break;
2340
2341 opcode = opcode->m_next;
2342
2343 if (!opcode)
2344 {
2345 if (ok_arch
2346 && !(ok_arch & current_architecture))
2347 {
2348 const struct m68k_cpu *cpu;
2349 int any = 0;
2350 size_t space = 400;
2351 char *buf = xmalloc (space + 1);
2352 size_t len;
2353 int paren = 1;
2354
2355 the_ins.error = buf;
2356 /* Make sure there's a NUL at the end of the buffer -- strncpy
2357 won't write one when it runs out of buffer. */
2358 buf[space] = 0;
2359 #define APPEND(STRING) \
2360 (strncpy (buf, STRING, space), len = strlen (buf), buf += len, space -= len)
2361
2362 APPEND (_("invalid instruction for this architecture; needs "));
2363 switch (ok_arch)
2364 {
2365 case mcfisa_a:
2366 APPEND ("ColdFire ISA_A");
2367 break;
2368 case mcfhwdiv:
2369 APPEND ("ColdFire ");
2370 APPEND (_("hardware divide"));
2371 break;
2372 case mcfisa_aa:
2373 APPEND ("ColdFire ISA_A+");
2374 break;
2375 case mcfisa_b:
2376 APPEND ("ColdFire ISA_B");
2377 break;
2378 case mcfisa_c:
2379 APPEND ("ColdFire ISA_C");
2380 break;
2381 case cfloat:
2382 APPEND ("ColdFire fpu");
2383 break;
2384 case mfloat:
2385 APPEND ("M68K fpu");
2386 break;
2387 case mmmu:
2388 APPEND ("M68K mmu");
2389 break;
2390 case m68020up:
2391 APPEND ("68020 ");
2392 APPEND (_("or higher"));
2393 break;
2394 case m68000up:
2395 APPEND ("68000 ");
2396 APPEND (_("or higher"));
2397 break;
2398 case m68010up:
2399 APPEND ("68010 ");
2400 APPEND (_("or higher"));
2401 break;
2402 default:
2403 paren = 0;
2404 }
2405 if (paren)
2406 APPEND (" (");
2407
2408 for (cpu = m68k_cpus; cpu->name; cpu++)
2409 if (!cpu->alias && (cpu->arch & ok_arch))
2410 {
2411 const struct m68k_cpu *alias;
2412 int seen_master = 0;
2413
2414 if (any)
2415 APPEND (", ");
2416 any = 0;
2417 APPEND (cpu->name);
2418 for (alias = cpu; alias != m68k_cpus; alias--)
2419 if (alias[-1].alias >= 0)
2420 break;
2421 for (; !seen_master || alias->alias > 0; alias++)
2422 {
2423 if (!alias->alias)
2424 seen_master = 1;
2425 else
2426 {
2427 if (any)
2428 APPEND (", ");
2429 else
2430 APPEND (" [");
2431 APPEND (alias->name);
2432 any = 1;
2433 }
2434 }
2435 if (any)
2436 APPEND ("]");
2437 any = 1;
2438 }
2439 if (paren)
2440 APPEND (")");
2441 #undef APPEND
2442 if (!space)
2443 {
2444 /* We ran out of space, so replace the end of the list
2445 with ellipsis. */
2446 buf -= 4;
2447 while (*buf != ' ')
2448 buf--;
2449 strcpy (buf, " ...");
2450 }
2451 }
2452 else
2453 the_ins.error = _("operands mismatch");
2454 return;
2455 }
2456
2457 losing = 0;
2458 }
2459
2460 /* Now assemble it. */
2461 the_ins.args = opcode->m_operands;
2462 the_ins.numargs = opcode->m_opnum;
2463 the_ins.numo = opcode->m_codenum;
2464 the_ins.opcode[0] = getone (opcode);
2465 the_ins.opcode[1] = gettwo (opcode);
2466
2467 for (s = the_ins.args, opP = &the_ins.operands[0]; *s; s += 2, opP++)
2468 {
2469 int have_disp = 0;
2470 int use_pl = 0;
2471
2472 /* This switch is a doozy.
2473 Watch the first step; its a big one! */
2474 switch (s[0])
2475 {
2476
2477 case '*':
2478 case '~':
2479 case '%':
2480 case ';':
2481 case '@':
2482 case '!':
2483 case '&':
2484 case '$':
2485 case '?':
2486 case '/':
2487 case '<':
2488 case '>':
2489 case 'b':
2490 case 'm':
2491 case 'n':
2492 case 'o':
2493 case 'p':
2494 case 'q':
2495 case 'v':
2496 case 'w':
2497 case 'y':
2498 case 'z':
2499 case '4':
2500 #ifndef NO_68851
2501 case '|':
2502 #endif
2503 switch (opP->mode)
2504 {
2505 case IMMED:
2506 tmpreg = 0x3c; /* 7.4 */
2507 if (strchr ("bwl", s[1]))
2508 nextword = get_num (&opP->disp, 90);
2509 else
2510 nextword = get_num (&opP->disp, 0);
2511 if (isvar (&opP->disp))
2512 add_fix (s[1], &opP->disp, 0, 0);
2513 switch (s[1])
2514 {
2515 case 'b':
2516 if (!isbyte (nextword))
2517 opP->error = _("operand out of range");
2518 addword (nextword);
2519 baseo = 0;
2520 break;
2521 case 'w':
2522 if (!isword (nextword))
2523 opP->error = _("operand out of range");
2524 addword (nextword);
2525 baseo = 0;
2526 break;
2527 case 'W':
2528 if (!issword (nextword))
2529 opP->error = _("operand out of range");
2530 addword (nextword);
2531 baseo = 0;
2532 break;
2533 case 'l':
2534 addword (nextword >> 16);
2535 addword (nextword);
2536 baseo = 0;
2537 break;
2538
2539 case 'f':
2540 baseo = 2;
2541 outro = 8;
2542 break;
2543 case 'F':
2544 baseo = 4;
2545 outro = 11;
2546 break;
2547 case 'x':
2548 baseo = 6;
2549 outro = 15;
2550 break;
2551 case 'p':
2552 baseo = 6;
2553 outro = -1;
2554 break;
2555 default:
2556 abort ();
2557 }
2558 if (!baseo)
2559 break;
2560
2561 /* We gotta put out some float. */
2562 if (op (&opP->disp) != O_big)
2563 {
2564 valueT val;
2565 int gencnt;
2566
2567 /* Can other cases happen here? */
2568 if (op (&opP->disp) != O_constant)
2569 abort ();
2570
2571 val = (valueT) offs (&opP->disp);
2572 gencnt = 0;
2573 do
2574 {
2575 generic_bignum[gencnt] = (LITTLENUM_TYPE) val;
2576 val >>= LITTLENUM_NUMBER_OF_BITS;
2577 ++gencnt;
2578 }
2579 while (val != 0);
2580 offs (&opP->disp) = gencnt;
2581 }
2582 if (offs (&opP->disp) > 0)
2583 {
2584 if (offs (&opP->disp) > baseo)
2585 {
2586 as_warn (_("Bignum too big for %c format; truncated"),
2587 s[1]);
2588 offs (&opP->disp) = baseo;
2589 }
2590 baseo -= offs (&opP->disp);
2591 while (baseo--)
2592 addword (0);
2593 for (wordp = generic_bignum + offs (&opP->disp) - 1;
2594 offs (&opP->disp)--;
2595 --wordp)
2596 addword (*wordp);
2597 break;
2598 }
2599 gen_to_words (words, baseo, (long) outro);
2600 for (wordp = words; baseo--; wordp++)
2601 addword (*wordp);
2602 break;
2603 case DREG:
2604 tmpreg = opP->reg - DATA; /* 0.dreg */
2605 break;
2606 case AREG:
2607 tmpreg = 0x08 + opP->reg - ADDR; /* 1.areg */
2608 break;
2609 case AINDR:
2610 tmpreg = 0x10 + opP->reg - ADDR; /* 2.areg */
2611 break;
2612 case ADEC:
2613 tmpreg = 0x20 + opP->reg - ADDR; /* 4.areg */
2614 break;
2615 case AINC:
2616 tmpreg = 0x18 + opP->reg - ADDR; /* 3.areg */
2617 break;
2618 case DISP:
2619
2620 nextword = get_num (&opP->disp, 90);
2621
2622 /* Convert mode 5 addressing with a zero offset into
2623 mode 2 addressing to reduce the instruction size by a
2624 word. */
2625 if (! isvar (&opP->disp)
2626 && (nextword == 0)
2627 && (opP->disp.size == SIZE_UNSPEC)
2628 && (opP->reg >= ADDR0)
2629 && (opP->reg <= ADDR7))
2630 {
2631 tmpreg = 0x10 + opP->reg - ADDR; /* 2.areg */
2632 break;
2633 }
2634
2635 if (opP->reg == PC
2636 && ! isvar (&opP->disp)
2637 && m68k_abspcadd)
2638 {
2639 opP->disp.exp.X_op = O_symbol;
2640 opP->disp.exp.X_add_symbol =
2641 section_symbol (absolute_section);
2642 }
2643
2644 /* Force into index mode. Hope this works. */
2645
2646 /* We do the first bit for 32-bit displacements, and the
2647 second bit for 16 bit ones. It is possible that we
2648 should make the default be WORD instead of LONG, but
2649 I think that'd break GCC, so we put up with a little
2650 inefficiency for the sake of working output. */
2651
2652 if (!issword (nextword)
2653 || (isvar (&opP->disp)
2654 && ((opP->disp.size == SIZE_UNSPEC
2655 && flag_short_refs == 0
2656 && cpu_of_arch (current_architecture) >= m68020
2657 && ! arch_coldfire_p (current_architecture))
2658 || opP->disp.size == SIZE_LONG)))
2659 {
2660 if (cpu_of_arch (current_architecture) < m68020
2661 || arch_coldfire_p (current_architecture))
2662 opP->error =
2663 _("displacement too large for this architecture; needs 68020 or higher");
2664 if (opP->reg == PC)
2665 tmpreg = 0x3B; /* 7.3 */
2666 else
2667 tmpreg = 0x30 + opP->reg - ADDR; /* 6.areg */
2668 if (isvar (&opP->disp))
2669 {
2670 if (opP->reg == PC)
2671 {
2672 if (opP->disp.size == SIZE_LONG
2673 #ifdef OBJ_ELF
2674 /* If the displacement needs pic
2675 relocation it cannot be relaxed. */
2676 || opP->disp.pic_reloc != pic_none
2677 #endif
2678 )
2679 {
2680 addword (0x0170);
2681 add_fix ('l', &opP->disp, 1, 2);
2682 }
2683 else
2684 {
2685 add_frag (adds (&opP->disp),
2686 SEXT (offs (&opP->disp)),
2687 TAB (PCREL1632, SZ_UNDEF));
2688 break;
2689 }
2690 }
2691 else
2692 {
2693 addword (0x0170);
2694 add_fix ('l', &opP->disp, 0, 0);
2695 }
2696 }
2697 else
2698 addword (0x0170);
2699 addword (nextword >> 16);
2700 }
2701 else
2702 {
2703 if (opP->reg == PC)
2704 tmpreg = 0x3A; /* 7.2 */
2705 else
2706 tmpreg = 0x28 + opP->reg - ADDR; /* 5.areg */
2707
2708 if (isvar (&opP->disp))
2709 {
2710 if (opP->reg == PC)
2711 {
2712 add_fix ('w', &opP->disp, 1, 0);
2713 }
2714 else
2715 add_fix ('w', &opP->disp, 0, 0);
2716 }
2717 }
2718 addword (nextword);
2719 break;
2720
2721 case POST:
2722 case PRE:
2723 case BASE:
2724 nextword = 0;
2725 baseo = get_num (&opP->disp, 90);
2726 if (opP->mode == POST || opP->mode == PRE)
2727 outro = get_num (&opP->odisp, 90);
2728 /* Figure out the `addressing mode'.
2729 Also turn on the BASE_DISABLE bit, if needed. */
2730 if (opP->reg == PC || opP->reg == ZPC)
2731 {
2732 tmpreg = 0x3b; /* 7.3 */
2733 if (opP->reg == ZPC)
2734 nextword |= 0x80;
2735 }
2736 else if (opP->reg == 0)
2737 {
2738 nextword |= 0x80;
2739 tmpreg = 0x30; /* 6.garbage */
2740 }
2741 else if (opP->reg >= ZADDR0 && opP->reg <= ZADDR7)
2742 {
2743 nextword |= 0x80;
2744 tmpreg = 0x30 + opP->reg - ZADDR0;
2745 }
2746 else
2747 tmpreg = 0x30 + opP->reg - ADDR; /* 6.areg */
2748
2749 siz1 = opP->disp.size;
2750 if (opP->mode == POST || opP->mode == PRE)
2751 siz2 = opP->odisp.size;
2752 else
2753 siz2 = SIZE_UNSPEC;
2754
2755 /* Index register stuff. */
2756 if (opP->index.reg != 0
2757 && opP->index.reg >= DATA
2758 && opP->index.reg <= ADDR7)
2759 {
2760 nextword |= (opP->index.reg - DATA) << 12;
2761
2762 if (opP->index.size == SIZE_LONG
2763 || (opP->index.size == SIZE_UNSPEC
2764 && m68k_index_width_default == SIZE_LONG))
2765 nextword |= 0x800;
2766
2767 if ((opP->index.scale != 1
2768 && cpu_of_arch (current_architecture) < m68020)
2769 || (opP->index.scale == 8
2770 && (arch_coldfire_p (current_architecture)
2771 && !arch_coldfire_fpu (current_architecture))))
2772 {
2773 opP->error =
2774 _("scale factor invalid on this architecture; needs cpu32 or 68020 or higher");
2775 }
2776
2777 if (arch_coldfire_p (current_architecture)
2778 && opP->index.size == SIZE_WORD)
2779 opP->error = _("invalid index size for coldfire");
2780
2781 switch (opP->index.scale)
2782 {
2783 case 1:
2784 break;
2785 case 2:
2786 nextword |= 0x200;
2787 break;
2788 case 4:
2789 nextword |= 0x400;
2790 break;
2791 case 8:
2792 nextword |= 0x600;
2793 break;
2794 default:
2795 abort ();
2796 }
2797 /* IF its simple,
2798 GET US OUT OF HERE! */
2799
2800 /* Must be INDEX, with an index register. Address
2801 register cannot be ZERO-PC, and either :b was
2802 forced, or we know it will fit. For a 68000 or
2803 68010, force this mode anyways, because the
2804 larger modes aren't supported. */
2805 if (opP->mode == BASE
2806 && ((opP->reg >= ADDR0
2807 && opP->reg <= ADDR7)
2808 || opP->reg == PC))
2809 {
2810 if (siz1 == SIZE_BYTE
2811 || cpu_of_arch (current_architecture) < m68020
2812 || arch_coldfire_p (current_architecture)
2813 || (siz1 == SIZE_UNSPEC
2814 && ! isvar (&opP->disp)
2815 && issbyte (baseo)))
2816 {
2817 nextword += baseo & 0xff;
2818 addword (nextword);
2819 if (isvar (&opP->disp))
2820 {
2821 /* Do a byte relocation. If it doesn't
2822 fit (possible on m68000) let the
2823 fixup processing complain later. */
2824 if (opP->reg == PC)
2825 add_fix ('B', &opP->disp, 1, 1);
2826 else
2827 add_fix ('B', &opP->disp, 0, 0);
2828 }
2829 else if (siz1 != SIZE_BYTE)
2830 {
2831 if (siz1 != SIZE_UNSPEC)
2832 as_warn (_("Forcing byte displacement"));
2833 if (! issbyte (baseo))
2834 opP->error = _("byte displacement out of range");
2835 }
2836
2837 break;
2838 }
2839 else if (siz1 == SIZE_UNSPEC
2840 && opP->reg == PC
2841 && isvar (&opP->disp)
2842 && subs (&opP->disp) == NULL
2843 #ifdef OBJ_ELF
2844 /* If the displacement needs pic
2845 relocation it cannot be relaxed. */
2846 && opP->disp.pic_reloc == pic_none
2847 #endif
2848 )
2849 {
2850 /* The code in md_convert_frag_1 needs to be
2851 able to adjust nextword. Call frag_grow
2852 to ensure that we have enough space in
2853 the frag obstack to make all the bytes
2854 contiguous. */
2855 frag_grow (14);
2856 nextword += baseo & 0xff;
2857 addword (nextword);
2858 add_frag (adds (&opP->disp),
2859 SEXT (offs (&opP->disp)),
2860 TAB (PCINDEX, SZ_UNDEF));
2861
2862 break;
2863 }
2864 }
2865 }
2866 else
2867 {
2868 nextword |= 0x40; /* No index reg. */
2869 if (opP->index.reg >= ZDATA0
2870 && opP->index.reg <= ZDATA7)
2871 nextword |= (opP->index.reg - ZDATA0) << 12;
2872 else if (opP->index.reg >= ZADDR0
2873 || opP->index.reg <= ZADDR7)
2874 nextword |= (opP->index.reg - ZADDR0 + 8) << 12;
2875 }
2876
2877 /* It isn't simple. */
2878
2879 if (cpu_of_arch (current_architecture) < m68020
2880 || arch_coldfire_p (current_architecture))
2881 opP->error =
2882 _("invalid operand mode for this architecture; needs 68020 or higher");
2883
2884 nextword |= 0x100;
2885 /* If the guy specified a width, we assume that it is
2886 wide enough. Maybe it isn't. If so, we lose. */
2887 switch (siz1)
2888 {
2889 case SIZE_UNSPEC:
2890 if (isvar (&opP->disp)
2891 ? m68k_rel32
2892 : ! issword (baseo))
2893 {
2894 siz1 = SIZE_LONG;
2895 nextword |= 0x30;
2896 }
2897 else if (! isvar (&opP->disp) && baseo == 0)
2898 nextword |= 0x10;
2899 else
2900 {
2901 nextword |= 0x20;
2902 siz1 = SIZE_WORD;
2903 }
2904 break;
2905 case SIZE_BYTE:
2906 as_warn (_(":b not permitted; defaulting to :w"));
2907 /* Fall through. */
2908 case SIZE_WORD:
2909 nextword |= 0x20;
2910 break;
2911 case SIZE_LONG:
2912 nextword |= 0x30;
2913 break;
2914 }
2915
2916 /* Figure out inner displacement stuff. */
2917 if (opP->mode == POST || opP->mode == PRE)
2918 {
2919 if (cpu_of_arch (current_architecture) & cpu32)
2920 opP->error = _("invalid operand mode for this architecture; needs 68020 or higher");
2921 switch (siz2)
2922 {
2923 case SIZE_UNSPEC:
2924 if (isvar (&opP->odisp)
2925 ? m68k_rel32
2926 : ! issword (outro))
2927 {
2928 siz2 = SIZE_LONG;
2929 nextword |= 0x3;
2930 }
2931 else if (! isvar (&opP->odisp) && outro == 0)
2932 nextword |= 0x1;
2933 else
2934 {
2935 nextword |= 0x2;
2936 siz2 = SIZE_WORD;
2937 }
2938 break;
2939 case 1:
2940 as_warn (_(":b not permitted; defaulting to :w"));
2941 /* Fall through. */
2942 case 2:
2943 nextword |= 0x2;
2944 break;
2945 case 3:
2946 nextword |= 0x3;
2947 break;
2948 }
2949 if (opP->mode == POST
2950 && (nextword & 0x40) == 0)
2951 nextword |= 0x04;
2952 }
2953 addword (nextword);
2954
2955 if (siz1 != SIZE_UNSPEC && isvar (&opP->disp))
2956 {
2957 if (opP->reg == PC || opP->reg == ZPC)
2958 add_fix (siz1 == SIZE_LONG ? 'l' : 'w', &opP->disp, 1, 2);
2959 else
2960 add_fix (siz1 == SIZE_LONG ? 'l' : 'w', &opP->disp, 0, 0);
2961 }
2962 if (siz1 == SIZE_LONG)
2963 addword (baseo >> 16);
2964 if (siz1 != SIZE_UNSPEC)
2965 addword (baseo);
2966
2967 if (siz2 != SIZE_UNSPEC && isvar (&opP->odisp))
2968 add_fix (siz2 == SIZE_LONG ? 'l' : 'w', &opP->odisp, 0, 0);
2969 if (siz2 == SIZE_LONG)
2970 addword (outro >> 16);
2971 if (siz2 != SIZE_UNSPEC)
2972 addword (outro);
2973
2974 break;
2975
2976 case ABSL:
2977 nextword = get_num (&opP->disp, 90);
2978 switch (opP->disp.size)
2979 {
2980 default:
2981 abort ();
2982 case SIZE_UNSPEC:
2983 if (!isvar (&opP->disp) && issword (offs (&opP->disp)))
2984 {
2985 tmpreg = 0x38; /* 7.0 */
2986 addword (nextword);
2987 break;
2988 }
2989 if (isvar (&opP->disp)
2990 && !subs (&opP->disp)
2991 && adds (&opP->disp)
2992 #ifdef OBJ_ELF
2993 /* If the displacement needs pic relocation it
2994 cannot be relaxed. */
2995 && opP->disp.pic_reloc == pic_none
2996 #endif
2997 && !flag_long_jumps
2998 && !strchr ("~%&$?", s[0]))
2999 {
3000 tmpreg = 0x3A; /* 7.2 */
3001 add_frag (adds (&opP->disp),
3002 SEXT (offs (&opP->disp)),
3003 TAB (ABSTOPCREL, SZ_UNDEF));
3004 break;
3005 }
3006 /* Fall through into long. */
3007 case SIZE_LONG:
3008 if (isvar (&opP->disp))
3009 add_fix ('l', &opP->disp, 0, 0);
3010
3011 tmpreg = 0x39;/* 7.1 mode */
3012 addword (nextword >> 16);
3013 addword (nextword);
3014 break;
3015
3016 case SIZE_BYTE:
3017 as_bad (_("unsupported byte value; use a different suffix"));
3018 /* Fall through. */
3019
3020 case SIZE_WORD:
3021 if (isvar (&opP->disp))
3022 add_fix ('w', &opP->disp, 0, 0);
3023
3024 tmpreg = 0x38;/* 7.0 mode */
3025 addword (nextword);
3026 break;
3027 }
3028 break;
3029 case CONTROL:
3030 case FPREG:
3031 default:
3032 as_bad (_("unknown/incorrect operand"));
3033 /* abort (); */
3034 }
3035
3036 /* If s[0] is '4', then this is for the mac instructions
3037 that can have a trailing_ampersand set. If so, set 0x100
3038 bit on tmpreg so install_gen_operand can check for it and
3039 set the appropriate bit (word2, bit 5). */
3040 if (s[0] == '4')
3041 {
3042 if (opP->trailing_ampersand)
3043 tmpreg |= 0x100;
3044 }
3045 install_gen_operand (s[1], tmpreg);
3046 break;
3047
3048 case '#':
3049 case '^':
3050 switch (s[1])
3051 { /* JF: I hate floating point! */
3052 case 'j':
3053 tmpreg = 70;
3054 break;
3055 case '8':
3056 tmpreg = 20;
3057 break;
3058 case 'C':
3059 tmpreg = 50;
3060 break;
3061 case '3':
3062 default:
3063 tmpreg = 90;
3064 break;
3065 }
3066 tmpreg = get_num (&opP->disp, tmpreg);
3067 if (isvar (&opP->disp))
3068 add_fix (s[1], &opP->disp, 0, 0);
3069 switch (s[1])
3070 {
3071 case 'b': /* Danger: These do no check for
3072 certain types of overflow.
3073 user beware! */
3074 if (!isbyte (tmpreg))
3075 opP->error = _("out of range");
3076 insop (tmpreg, opcode);
3077 if (isvar (&opP->disp))
3078 the_ins.reloc[the_ins.nrel - 1].n =
3079 (opcode->m_codenum) * 2 + 1;
3080 break;
3081 case 'B':
3082 if (!issbyte (tmpreg))
3083 opP->error = _("out of range");
3084 the_ins.opcode[the_ins.numo - 1] |= tmpreg & 0xff;
3085 if (isvar (&opP->disp))
3086 the_ins.reloc[the_ins.nrel - 1].n = opcode->m_codenum * 2 - 1;
3087 break;
3088 case 'w':
3089 if (!isword (tmpreg))
3090 opP->error = _("out of range");
3091 insop (tmpreg, opcode);
3092 if (isvar (&opP->disp))
3093 the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
3094 break;
3095 case 'W':
3096 if (!issword (tmpreg))
3097 opP->error = _("out of range");
3098 insop (tmpreg, opcode);
3099 if (isvar (&opP->disp))
3100 the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
3101 break;
3102 case 'l':
3103 /* Because of the way insop works, we put these two out
3104 backwards. */
3105 insop (tmpreg, opcode);
3106 insop (tmpreg >> 16, opcode);
3107 if (isvar (&opP->disp))
3108 the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
3109 break;
3110 case '3':
3111 tmpreg &= 0xFF;
3112 case '8':
3113 case 'C':
3114 case 'j':
3115 install_operand (s[1], tmpreg);
3116 break;
3117 default:
3118 abort ();
3119 }
3120 break;
3121
3122 case '+':
3123 case '-':
3124 case 'A':
3125 case 'a':
3126 install_operand (s[1], opP->reg - ADDR);
3127 break;
3128
3129 case 'B':
3130 tmpreg = get_num (&opP->disp, 90);
3131
3132 switch (s[1])
3133 {
3134 case 'B':
3135 add_fix ('B', &opP->disp, 1, -1);
3136 break;
3137 case 'W':
3138 add_fix ('w', &opP->disp, 1, 0);
3139 addword (0);
3140 break;
3141 case 'L':
3142 long_branch:
3143 the_ins.opcode[0] |= 0xff;
3144 add_fix ('l', &opP->disp, 1, 0);
3145 addword (0);
3146 addword (0);
3147 break;
3148 case 'g': /* Conditional branch */
3149 have_disp = HAVE_LONG_CALL (current_architecture);
3150 goto var_branch;
3151
3152 case 'b': /* Unconditional branch */
3153 have_disp = HAVE_LONG_BRANCH (current_architecture);
3154 use_pl = LONG_BRANCH_VIA_COND (current_architecture);
3155 goto var_branch;
3156
3157 case 's': /* Unconditional subroutine */
3158 have_disp = HAVE_LONG_CALL (current_architecture);
3159
3160 var_branch:
3161 if (subs (&opP->disp) /* We can't relax it. */
3162 #ifdef OBJ_ELF
3163 /* If the displacement needs pic relocation it cannot be
3164 relaxed. */
3165 || opP->disp.pic_reloc != pic_none
3166 #endif
3167 || 0)
3168 {
3169 if (!have_disp)
3170 as_warn (_("Can't use long branches on this architecture"));
3171 goto long_branch;
3172 }
3173
3174 /* This could either be a symbol, or an absolute
3175 address. If it's an absolute address, turn it into
3176 an absolute jump right here and keep it out of the
3177 relaxer. */
3178 if (adds (&opP->disp) == 0)
3179 {
3180 if (the_ins.opcode[0] == 0x6000) /* jbra */
3181 the_ins.opcode[0] = 0x4EF9;
3182 else if (the_ins.opcode[0] == 0x6100) /* jbsr */
3183 the_ins.opcode[0] = 0x4EB9;
3184 else /* jCC */
3185 {
3186 the_ins.opcode[0] ^= 0x0100;
3187 the_ins.opcode[0] |= 0x0006;
3188 addword (0x4EF9);
3189 }
3190 add_fix ('l', &opP->disp, 0, 0);
3191 addword (0);
3192 addword (0);
3193 break;
3194 }
3195
3196 /* Now we know it's going into the relaxer. Now figure
3197 out which mode. We try in this order of preference:
3198 long branch, absolute jump, byte/word branches only. */
3199 if (have_disp)
3200 add_frag (adds (&opP->disp),
3201 SEXT (offs (&opP->disp)),
3202 TAB (BRANCHBWL, SZ_UNDEF));
3203 else if (! flag_keep_pcrel)
3204 {
3205 if ((the_ins.opcode[0] == 0x6000)
3206 || (the_ins.opcode[0] == 0x6100))
3207 add_frag (adds (&opP->disp),
3208 SEXT (offs (&opP->disp)),
3209 TAB (BRABSJUNC, SZ_UNDEF));
3210 else
3211 add_frag (adds (&opP->disp),
3212 SEXT (offs (&opP->disp)),
3213 TAB (BRABSJCOND, SZ_UNDEF));
3214 }
3215 else
3216 add_frag (adds (&opP->disp),
3217 SEXT (offs (&opP->disp)),
3218 (use_pl ? TAB (BRANCHBWPL, SZ_UNDEF)
3219 : TAB (BRANCHBW, SZ_UNDEF)));
3220 break;
3221 case 'w':
3222 if (isvar (&opP->disp))
3223 {
3224 /* Check for DBcc instructions. We can relax them,
3225 but only if we have long branches and/or absolute
3226 jumps. */
3227 if (((the_ins.opcode[0] & 0xf0f8) == 0x50c8)
3228 && (HAVE_LONG_BRANCH (current_architecture)
3229 || ! flag_keep_pcrel))
3230 {
3231 if (HAVE_LONG_BRANCH (current_architecture))
3232 add_frag (adds (&opP->disp),
3233 SEXT (offs (&opP->disp)),
3234 TAB (DBCCLBR, SZ_UNDEF));
3235 else
3236 add_frag (adds (&opP->disp),
3237 SEXT (offs (&opP->disp)),
3238 TAB (DBCCABSJ, SZ_UNDEF));
3239 break;
3240 }
3241 add_fix ('w', &opP->disp, 1, 0);
3242 }
3243 addword (0);
3244 break;
3245 case 'C': /* Fixed size LONG coproc branches. */
3246 add_fix ('l', &opP->disp, 1, 0);
3247 addword (0);
3248 addword (0);
3249 break;
3250 case 'c': /* Var size Coprocesssor branches. */
3251 if (subs (&opP->disp) || (adds (&opP->disp) == 0))
3252 {
3253 the_ins.opcode[the_ins.numo - 1] |= 0x40;
3254 add_fix ('l', &opP->disp, 1, 0);
3255 addword (0);
3256 addword (0);
3257 }
3258 else
3259 add_frag (adds (&opP->disp),
3260 SEXT (offs (&opP->disp)),
3261 TAB (FBRANCH, SZ_UNDEF));
3262 break;
3263 default:
3264 abort ();
3265 }
3266 break;
3267
3268 case 'C': /* Ignore it. */
3269 break;
3270
3271 case 'd': /* JF this is a kludge. */
3272 install_operand ('s', opP->reg - ADDR);
3273 tmpreg = get_num (&opP->disp, 90);
3274 if (!issword (tmpreg))
3275 {
3276 as_warn (_("Expression out of range, using 0"));
3277 tmpreg = 0;
3278 }
3279 addword (tmpreg);
3280 break;
3281
3282 case 'D':
3283 install_operand (s[1], opP->reg - DATA);
3284 break;
3285
3286 case 'e': /* EMAC ACCx, reg/reg. */
3287 install_operand (s[1], opP->reg - ACC);
3288 break;
3289
3290 case 'E': /* Ignore it. */
3291 break;
3292
3293 case 'F':
3294 install_operand (s[1], opP->reg - FP0);
3295 break;
3296
3297 case 'g': /* EMAC ACCEXTx. */
3298 install_operand (s[1], opP->reg - ACCEXT01);
3299 break;
3300
3301 case 'G': /* Ignore it. */
3302 case 'H':
3303 break;
3304
3305 case 'I':
3306 tmpreg = opP->reg - COP0;
3307 install_operand (s[1], tmpreg);
3308 break;
3309
3310 case 'i': /* MAC/EMAC scale factor. */
3311 install_operand (s[1], opP->mode == LSH ? 0x1 : 0x3);
3312 break;
3313
3314 case 'J': /* JF foo. */
3315 switch (opP->reg)
3316 {
3317 case SFC:
3318 tmpreg = 0x000;
3319 break;
3320 case DFC:
3321 tmpreg = 0x001;
3322 break;
3323 case CACR:
3324 tmpreg = 0x002;
3325 break;
3326 case TC:
3327 case ASID:
3328 tmpreg = 0x003;
3329 break;
3330 case ACR0:
3331 case ITT0:
3332 tmpreg = 0x004;
3333 break;
3334 case ACR1:
3335 case ITT1:
3336 tmpreg = 0x005;
3337 break;
3338 case ACR2:
3339 case DTT0:
3340 tmpreg = 0x006;
3341 break;
3342 case ACR3:
3343 case DTT1:
3344 tmpreg = 0x007;
3345 break;
3346 case BUSCR:
3347 case MMUBAR:
3348 tmpreg = 0x008;
3349 break;
3350 case RGPIOBAR:
3351 tmpreg = 0x009;
3352 break;
3353 case ACR4:
3354 case ACR5:
3355 case ACR6:
3356 case ACR7:
3357 tmpreg = 0x00c + (opP->reg - ACR4);
3358 break;
3359
3360 case USP:
3361 tmpreg = 0x800;
3362 break;
3363 case VBR:
3364 tmpreg = 0x801;
3365 break;
3366 case CAAR:
3367 case CPUCR:
3368 tmpreg = 0x802;
3369 break;
3370 case MSP:
3371 tmpreg = 0x803;
3372 break;
3373 case ISP:
3374 tmpreg = 0x804;
3375 break;
3376 case MMUSR:
3377 tmpreg = 0x805;
3378 break;
3379 case URP:
3380 tmpreg = 0x806;
3381 break;
3382 case SRP:
3383 tmpreg = 0x807;
3384 break;
3385 case PCR:
3386 tmpreg = 0x808;
3387 break;
3388 case ROMBAR:
3389 case ROMBAR0:
3390 tmpreg = 0xC00;
3391 break;
3392 case ROMBAR1:
3393 tmpreg = 0xC01;
3394 break;
3395 case FLASHBAR:
3396 case RAMBAR0:
3397 case RAMBAR_ALT:
3398 tmpreg = 0xC04;
3399 break;
3400 case RAMBAR:
3401 case RAMBAR1:
3402 tmpreg = 0xC05;
3403 break;
3404 case MPCR:
3405 tmpreg = 0xC0C;
3406 break;
3407 case EDRAMBAR:
3408 tmpreg = 0xC0D;
3409 break;
3410 case MBAR0:
3411 case MBAR2:
3412 case SECMBAR:
3413 tmpreg = 0xC0E;
3414 break;
3415 case MBAR1:
3416 case MBAR:
3417 tmpreg = 0xC0F;
3418 break;
3419 case PCR1U0:
3420 tmpreg = 0xD02;
3421 break;
3422 case PCR1L0:
3423 tmpreg = 0xD03;
3424 break;
3425 case PCR2U0:
3426 tmpreg = 0xD04;
3427 break;
3428 case PCR2L0:
3429 tmpreg = 0xD05;
3430 break;
3431 case PCR3U0:
3432 tmpreg = 0xD06;
3433 break;
3434 case PCR3L0:
3435 tmpreg = 0xD07;
3436 break;
3437 case PCR1L1:
3438 tmpreg = 0xD0A;
3439 break;
3440 case PCR1U1:
3441 tmpreg = 0xD0B;
3442 break;
3443 case PCR2L1:
3444 tmpreg = 0xD0C;
3445 break;
3446 case PCR2U1:
3447 tmpreg = 0xD0D;
3448 break;
3449 case PCR3L1:
3450 tmpreg = 0xD0E;
3451 break;
3452 case PCR3U1:
3453 tmpreg = 0xD0F;
3454 break;
3455 case CAC:
3456 tmpreg = 0xFFE;
3457 break;
3458 case MBO:
3459 tmpreg = 0xFFF;
3460 break;
3461 default:
3462 abort ();
3463 }
3464 install_operand (s[1], tmpreg);
3465 break;
3466
3467 case 'k':
3468 tmpreg = get_num (&opP->disp, 55);
3469 install_operand (s[1], tmpreg & 0x7f);
3470 break;
3471
3472 case 'l':
3473 tmpreg = opP->mask;
3474 if (s[1] == 'w')
3475 {
3476 if (tmpreg & 0x7FF0000)
3477 as_bad (_("Floating point register in register list"));
3478 insop (reverse_16_bits (tmpreg), opcode);
3479 }
3480 else
3481 {
3482 if (tmpreg & 0x700FFFF)
3483 as_bad (_("Wrong register in floating-point reglist"));
3484 install_operand (s[1], reverse_8_bits (tmpreg >> 16));
3485 }
3486 break;
3487
3488 case 'L':
3489 tmpreg = opP->mask;
3490 if (s[1] == 'w')
3491 {
3492 if (tmpreg & 0x7FF0000)
3493 as_bad (_("Floating point register in register list"));
3494 insop (tmpreg, opcode);
3495 }
3496 else if (s[1] == '8')
3497 {
3498 if (tmpreg & 0x0FFFFFF)
3499 as_bad (_("incorrect register in reglist"));
3500 install_operand (s[1], tmpreg >> 24);
3501 }
3502 else
3503 {
3504 if (tmpreg & 0x700FFFF)
3505 as_bad (_("wrong register in floating-point reglist"));
3506 else
3507 install_operand (s[1], tmpreg >> 16);
3508 }
3509 break;
3510
3511 case 'M':
3512 install_operand (s[1], get_num (&opP->disp, 60));
3513 break;
3514
3515 case 'O':
3516 tmpreg = ((opP->mode == DREG)
3517 ? 0x20 + (int) (opP->reg - DATA)
3518 : (get_num (&opP->disp, 40) & 0x1F));
3519 install_operand (s[1], tmpreg);
3520 break;
3521
3522 case 'Q':
3523 tmpreg = get_num (&opP->disp, 10);
3524 if (tmpreg == 8)
3525 tmpreg = 0;
3526 install_operand (s[1], tmpreg);
3527 break;
3528
3529 case 'R':
3530 /* This depends on the fact that ADDR registers are eight
3531 more than their corresponding DATA regs, so the result
3532 will have the ADDR_REG bit set. */
3533 install_operand (s[1], opP->reg - DATA);
3534 break;
3535
3536 case 'r':
3537 if (opP->mode == AINDR)
3538 install_operand (s[1], opP->reg - DATA);
3539 else
3540 install_operand (s[1], opP->index.reg - DATA);
3541 break;
3542
3543 case 's':
3544 if (opP->reg == FPI)
3545 tmpreg = 0x1;
3546 else if (opP->reg == FPS)
3547 tmpreg = 0x2;
3548 else if (opP->reg == FPC)
3549 tmpreg = 0x4;
3550 else
3551 abort ();
3552 install_operand (s[1], tmpreg);
3553 break;
3554
3555 case 'S': /* Ignore it. */
3556 break;
3557
3558 case 'T':
3559 install_operand (s[1], get_num (&opP->disp, 30));
3560 break;
3561
3562 case 'U': /* Ignore it. */
3563 break;
3564
3565 case 'c':
3566 switch (opP->reg)
3567 {
3568 case NC:
3569 tmpreg = 0;
3570 break;
3571 case DC:
3572 tmpreg = 1;
3573 break;
3574 case IC:
3575 tmpreg = 2;
3576 break;
3577 case BC:
3578 tmpreg = 3;
3579 break;
3580 default:
3581 as_fatal (_("failed sanity check"));
3582 } /* switch on cache token. */
3583 install_operand (s[1], tmpreg);
3584 break;
3585 #ifndef NO_68851
3586 /* JF: These are out of order, I fear. */
3587 case 'f':
3588 switch (opP->reg)
3589 {
3590 case SFC:
3591 tmpreg = 0;
3592 break;
3593 case DFC:
3594 tmpreg = 1;
3595 break;
3596 default:
3597 abort ();
3598 }
3599 install_operand (s[1], tmpreg);
3600 break;
3601
3602 case '0':
3603 case '1':
3604 case '2':
3605 switch (opP->reg)
3606 {
3607 case TC:
3608 tmpreg = 0;
3609 break;
3610 case CAL:
3611 tmpreg = 4;
3612 break;
3613 case VAL:
3614 tmpreg = 5;
3615 break;
3616 case SCC:
3617 tmpreg = 6;
3618 break;
3619 case AC:
3620 tmpreg = 7;
3621 break;
3622 default:
3623 abort ();
3624 }
3625 install_operand (s[1], tmpreg);
3626 break;
3627
3628 case 'V':
3629 if (opP->reg == VAL)
3630 break;
3631 abort ();
3632
3633 case 'W':
3634 switch (opP->reg)
3635 {
3636 case DRP:
3637 tmpreg = 1;
3638 break;
3639 case SRP:
3640 tmpreg = 2;
3641 break;
3642 case CRP:
3643 tmpreg = 3;
3644 break;
3645 default:
3646 abort ();
3647 }
3648 install_operand (s[1], tmpreg);
3649 break;
3650
3651 case 'X':
3652 switch (opP->reg)
3653 {
3654 case BAD:
3655 case BAD + 1:
3656 case BAD + 2:
3657 case BAD + 3:
3658 case BAD + 4:
3659 case BAD + 5:
3660 case BAD + 6:
3661 case BAD + 7:
3662 tmpreg = (4 << 10) | ((opP->reg - BAD) << 2);
3663 break;
3664
3665 case BAC:
3666 case BAC + 1:
3667 case BAC + 2:
3668 case BAC + 3:
3669 case BAC + 4:
3670 case BAC + 5:
3671 case BAC + 6:
3672 case BAC + 7:
3673 tmpreg = (5 << 10) | ((opP->reg - BAC) << 2);
3674 break;
3675
3676 default:
3677 abort ();
3678 }
3679 install_operand (s[1], tmpreg);
3680 break;
3681 case 'Y':
3682 know (opP->reg == PSR);
3683 break;
3684 case 'Z':
3685 know (opP->reg == PCSR);
3686 break;
3687 #endif /* m68851 */
3688 case '3':
3689 switch (opP->reg)
3690 {
3691 case TT0:
3692 tmpreg = 2;
3693 break;
3694 case TT1:
3695 tmpreg = 3;
3696 break;
3697 default:
3698 abort ();
3699 }
3700 install_operand (s[1], tmpreg);
3701 break;
3702 case 't':
3703 tmpreg = get_num (&opP->disp, 20);
3704 install_operand (s[1], tmpreg);
3705 break;
3706 case '_': /* used only for move16 absolute 32-bit address. */
3707 if (isvar (&opP->disp))
3708 add_fix ('l', &opP->disp, 0, 0);
3709 tmpreg = get_num (&opP->disp, 90);
3710 addword (tmpreg >> 16);
3711 addword (tmpreg & 0xFFFF);
3712 break;
3713 case 'u':
3714 install_operand (s[1], opP->reg - DATA0L);
3715 opP->reg -= (DATA0L);
3716 opP->reg &= 0x0F; /* remove upper/lower bit. */
3717 break;
3718 case 'x':
3719 tmpreg = get_num (&opP->disp, 80);
3720 if (tmpreg == -1)
3721 tmpreg = 0;
3722 install_operand (s[1], tmpreg);
3723 break;
3724 case 'j':
3725 tmpreg = get_num (&opP->disp, 10);
3726 install_operand (s[1], tmpreg - 1);
3727 break;
3728 case 'K':
3729 tmpreg = get_num (&opP->disp, 65);
3730 install_operand (s[1], tmpreg);
3731 break;
3732 default:
3733 abort ();
3734 }
3735 }
3736
3737 /* By the time whe get here (FINALLY) the_ins contains the complete
3738 instruction, ready to be emitted. . . */
3739 }
3740
3741 static int
3742 reverse_16_bits (int in)
3743 {
3744 int out = 0;
3745 int n;
3746
3747 static int mask[16] =
3748 {
3749 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
3750 0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000, 0x8000
3751 };
3752 for (n = 0; n < 16; n++)
3753 {
3754 if (in & mask[n])
3755 out |= mask[15 - n];
3756 }
3757 return out;
3758 } /* reverse_16_bits() */
3759
3760 static int
3761 reverse_8_bits (int in)
3762 {
3763 int out = 0;
3764 int n;
3765
3766 static int mask[8] =
3767 {
3768 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
3769 };
3770
3771 for (n = 0; n < 8; n++)
3772 {
3773 if (in & mask[n])
3774 out |= mask[7 - n];
3775 }
3776 return out;
3777 } /* reverse_8_bits() */
3778
3779 /* Cause an extra frag to be generated here, inserting up to
3780 FRAG_VAR_SIZE bytes. TYPE is the subtype of the frag to be
3781 generated; its primary type is rs_machine_dependent.
3782
3783 The TYPE parameter is also used by md_convert_frag_1 and
3784 md_estimate_size_before_relax. The appropriate type of fixup will
3785 be emitted by md_convert_frag_1.
3786
3787 ADD becomes the FR_SYMBOL field of the frag, and OFF the FR_OFFSET. */
3788 static void
3789 install_operand (int mode, int val)
3790 {
3791 switch (mode)
3792 {
3793 case 's':
3794 the_ins.opcode[0] |= val & 0xFF; /* JF FF is for M kludge. */
3795 break;
3796 case 'd':
3797 the_ins.opcode[0] |= val << 9;
3798 break;
3799 case 'E':
3800 the_ins.opcode[1] |= val << 9;
3801 break;
3802 case '1':
3803 the_ins.opcode[1] |= val << 12;
3804 break;
3805 case '2':
3806 the_ins.opcode[1] |= val << 6;
3807 break;
3808 case '3':
3809 the_ins.opcode[1] |= val;
3810 break;
3811 case '4':
3812 the_ins.opcode[2] |= val << 12;
3813 break;
3814 case '5':
3815 the_ins.opcode[2] |= val << 6;
3816 break;
3817 case '6':
3818 /* DANGER! This is a hack to force cas2l and cas2w cmds to be
3819 three words long! */
3820 the_ins.numo++;
3821 the_ins.opcode[2] |= val;
3822 break;
3823 case '7':
3824 the_ins.opcode[1] |= val << 7;
3825 break;
3826 case '8':
3827 the_ins.opcode[1] |= val << 10;
3828 break;
3829 #ifndef NO_68851
3830 case '9':
3831 the_ins.opcode[1] |= val << 5;
3832 break;
3833 #endif
3834
3835 case 't':
3836 the_ins.opcode[1] |= (val << 10) | (val << 7);
3837 break;
3838 case 'D':
3839 the_ins.opcode[1] |= (val << 12) | val;
3840 break;
3841 case 'g':
3842 the_ins.opcode[0] |= val = 0xff;
3843 break;
3844 case 'i':
3845 the_ins.opcode[0] |= val << 9;
3846 break;
3847 case 'C':
3848 the_ins.opcode[1] |= val;
3849 break;
3850 case 'j':
3851 the_ins.opcode[1] |= val;
3852 the_ins.numo++; /* What a hack. */
3853 break;
3854 case 'k':
3855 the_ins.opcode[1] |= val << 4;
3856 break;
3857 case 'b':
3858 case 'w':
3859 case 'W':
3860 case 'l':
3861 break;
3862 case 'e':
3863 the_ins.opcode[0] |= (val << 6);
3864 break;
3865 case 'L':
3866 the_ins.opcode[1] = (val >> 16);
3867 the_ins.opcode[2] = val & 0xffff;
3868 break;
3869 case 'm':
3870 the_ins.opcode[0] |= ((val & 0x8) << (6 - 3));
3871 the_ins.opcode[0] |= ((val & 0x7) << 9);
3872 the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
3873 break;
3874 case 'n': /* MAC/EMAC Rx on !load. */
3875 the_ins.opcode[0] |= ((val & 0x8) << (6 - 3));
3876 the_ins.opcode[0] |= ((val & 0x7) << 9);
3877 the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
3878 break;
3879 case 'o': /* MAC/EMAC Rx on load. */
3880 the_ins.opcode[1] |= val << 12;
3881 the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
3882 break;
3883 case 'M': /* MAC/EMAC Ry on !load. */
3884 the_ins.opcode[0] |= (val & 0xF);
3885 the_ins.opcode[1] |= ((val & 0x10) << (6 - 4));
3886 break;
3887 case 'N': /* MAC/EMAC Ry on load. */
3888 the_ins.opcode[1] |= (val & 0xF);
3889 the_ins.opcode[1] |= ((val & 0x10) << (6 - 4));
3890 break;
3891 case 'h':
3892 the_ins.opcode[1] |= ((val != 1) << 10);
3893 break;
3894 case 'F':
3895 the_ins.opcode[0] |= ((val & 0x3) << 9);
3896 break;
3897 case 'f':
3898 the_ins.opcode[0] |= ((val & 0x3) << 0);
3899 break;
3900 case 'G': /* EMAC accumulator in a EMAC load instruction. */
3901 the_ins.opcode[0] |= ((~val & 0x1) << 7);
3902 the_ins.opcode[1] |= ((val & 0x2) << (4 - 1));
3903 break;
3904 case 'H': /* EMAC accumulator in a EMAC non-load instruction. */
3905 the_ins.opcode[0] |= ((val & 0x1) << 7);
3906 the_ins.opcode[1] |= ((val & 0x2) << (4 - 1));
3907 break;
3908 case 'I':
3909 the_ins.opcode[1] |= ((val & 0x3) << 9);
3910 break;
3911 case ']':
3912 the_ins.opcode[0] |= (val & 0x1) <<10;
3913 break;
3914 case 'c':
3915 default:
3916 as_fatal (_("failed sanity check."));
3917 }
3918 }
3919
3920 static void
3921 install_gen_operand (int mode, int val)
3922 {
3923 switch (mode)
3924 {
3925 case '/': /* Special for mask loads for mac/msac insns with
3926 possible mask; trailing_ampersend set in bit 8. */
3927 the_ins.opcode[0] |= (val & 0x3f);
3928 the_ins.opcode[1] |= (((val & 0x100) >> 8) << 5);
3929 break;
3930 case 's':
3931 the_ins.opcode[0] |= val;
3932 break;
3933 case 'd':
3934 /* This is a kludge!!! */
3935 the_ins.opcode[0] |= (val & 0x07) << 9 | (val & 0x38) << 3;
3936 break;
3937 case 'b':
3938 case 'w':
3939 case 'l':
3940 case 'f':
3941 case 'F':
3942 case 'x':
3943 case 'p':
3944 the_ins.opcode[0] |= val;
3945 break;
3946 /* more stuff goes here. */
3947 default:
3948 as_fatal (_("failed sanity check."));
3949 }
3950 }
3951
3952 /* Verify that we have some number of paren pairs, do m68k_ip_op(), and
3953 then deal with the bitfield hack. */
3954
3955 static char *
3956 crack_operand (char *str, struct m68k_op *opP)
3957 {
3958 int parens;
3959 int c;
3960 char *beg_str;
3961 int inquote = 0;
3962
3963 if (!str)
3964 {
3965 return str;
3966 }
3967 beg_str = str;
3968 for (parens = 0; *str && (parens > 0 || inquote || notend (str)); str++)
3969 {
3970 if (! inquote)
3971 {
3972 if (*str == '(')
3973 parens++;
3974 else if (*str == ')')
3975 {
3976 if (!parens)
3977 { /* ERROR. */
3978 opP->error = _("Extra )");
3979 return str;
3980 }
3981 --parens;
3982 }
3983 }
3984 if (flag_mri && *str == '\'')
3985 inquote = ! inquote;
3986 }
3987 if (!*str && parens)
3988 { /* ERROR. */
3989 opP->error = _("Missing )");
3990 return str;
3991 }
3992 c = *str;
3993 *str = '\0';
3994 if (m68k_ip_op (beg_str, opP) != 0)
3995 {
3996 *str = c;
3997 return str;
3998 }
3999 *str = c;
4000 if (c == '}')
4001 c = *++str; /* JF bitfield hack. */
4002 if (c)
4003 {
4004 c = *++str;
4005 if (!c)
4006 as_bad (_("Missing operand"));
4007 }
4008
4009 /* Detect MRI REG symbols and convert them to REGLSTs. */
4010 if (opP->mode == CONTROL && (int)opP->reg < 0)
4011 {
4012 opP->mode = REGLST;
4013 opP->mask = ~(int)opP->reg;
4014 opP->reg = 0;
4015 }
4016
4017 return str;
4018 }
4019
4020 /* This is the guts of the machine-dependent assembler. STR points to a
4021 machine dependent instruction. This function is supposed to emit
4022 the frags/bytes it assembles to.
4023 */
4024
4025 static void
4026 insert_reg (const char *regname, int regnum)
4027 {
4028 char buf[100];
4029 int i;
4030
4031 #ifdef REGISTER_PREFIX
4032 if (!flag_reg_prefix_optional)
4033 {
4034 buf[0] = REGISTER_PREFIX;
4035 strcpy (buf + 1, regname);
4036 regname = buf;
4037 }
4038 #endif
4039
4040 symbol_table_insert (symbol_new (regname, reg_section, regnum,
4041 &zero_address_frag));
4042
4043 for (i = 0; regname[i]; i++)
4044 buf[i] = TOUPPER (regname[i]);
4045 buf[i] = '\0';
4046
4047 symbol_table_insert (symbol_new (buf, reg_section, regnum,
4048 &zero_address_frag));
4049 }
4050
4051 struct init_entry
4052 {
4053 const char *name;
4054 int number;
4055 };
4056
4057 static const struct init_entry init_table[] =
4058 {
4059 { "d0", DATA0 },
4060 { "d1", DATA1 },
4061 { "d2", DATA2 },
4062 { "d3", DATA3 },
4063 { "d4", DATA4 },
4064 { "d5", DATA5 },
4065 { "d6", DATA6 },
4066 { "d7", DATA7 },
4067 { "a0", ADDR0 },
4068 { "a1", ADDR1 },
4069 { "a2", ADDR2 },
4070 { "a3", ADDR3 },
4071 { "a4", ADDR4 },
4072 { "a5", ADDR5 },
4073 { "a6", ADDR6 },
4074 { "fp", ADDR6 },
4075 { "a7", ADDR7 },
4076 { "sp", ADDR7 },
4077 { "ssp", ADDR7 },
4078 { "fp0", FP0 },
4079 { "fp1", FP1 },
4080 { "fp2", FP2 },
4081 { "fp3", FP3 },
4082 { "fp4", FP4 },
4083 { "fp5", FP5 },
4084 { "fp6", FP6 },
4085 { "fp7", FP7 },
4086 { "fpi", FPI },
4087 { "fpiar", FPI },
4088 { "fpc", FPI },
4089 { "fps", FPS },
4090 { "fpsr", FPS },
4091 { "fpc", FPC },
4092 { "fpcr", FPC },
4093 { "control", FPC },
4094 { "status", FPS },
4095 { "iaddr", FPI },
4096
4097 { "cop0", COP0 },
4098 { "cop1", COP1 },
4099 { "cop2", COP2 },
4100 { "cop3", COP3 },
4101 { "cop4", COP4 },
4102 { "cop5", COP5 },
4103 { "cop6", COP6 },
4104 { "cop7", COP7 },
4105 { "pc", PC },
4106 { "zpc", ZPC },
4107 { "sr", SR },
4108
4109 { "ccr", CCR },
4110 { "cc", CCR },
4111
4112 { "acc", ACC },
4113 { "acc0", ACC },
4114 { "acc1", ACC1 },
4115 { "acc2", ACC2 },
4116 { "acc3", ACC3 },
4117 { "accext01", ACCEXT01 },
4118 { "accext23", ACCEXT23 },
4119 { "macsr", MACSR },
4120 { "mask", MASK },
4121
4122 /* Control registers. */
4123 { "sfc", SFC }, /* Source Function Code. */
4124 { "sfcr", SFC },
4125 { "dfc", DFC }, /* Destination Function Code. */
4126 { "dfcr", DFC },
4127 { "cacr", CACR }, /* Cache Control Register. */
4128 { "caar", CAAR }, /* Cache Address Register. */
4129 { "cpucr", CPUCR }, /* CPU Control Register. */
4130
4131 { "usp", USP }, /* User Stack Pointer. */
4132 { "vbr", VBR }, /* Vector Base Register. */
4133 { "msp", MSP }, /* Master Stack Pointer. */
4134 { "isp", ISP }, /* Interrupt Stack Pointer. */
4135
4136 { "itt0", ITT0 }, /* Instruction Transparent Translation Reg 0. */
4137 { "itt1", ITT1 }, /* Instruction Transparent Translation Reg 1. */
4138 { "dtt0", DTT0 }, /* Data Transparent Translation Register 0. */
4139 { "dtt1", DTT1 }, /* Data Transparent Translation Register 1. */
4140
4141 /* 68ec040 versions of same */
4142 { "iacr0", ITT0 }, /* Instruction Access Control Register 0. */
4143 { "iacr1", ITT1 }, /* Instruction Access Control Register 0. */
4144 { "dacr0", DTT0 }, /* Data Access Control Register 0. */
4145 { "dacr1", DTT1 }, /* Data Access Control Register 0. */
4146
4147 /* Coldfire versions of same. The ColdFire programmer's reference
4148 manual indicated that the order is 2,3,0,1, but Ken Rose
4149 <rose@netcom.com> says that 0,1,2,3 is the correct order. */
4150 { "acr0", ACR0 }, /* Access Control Unit 0. */
4151 { "acr1", ACR1 }, /* Access Control Unit 1. */
4152 { "acr2", ACR2 }, /* Access Control Unit 2. */
4153 { "acr3", ACR3 }, /* Access Control Unit 3. */
4154 { "acr4", ACR4 }, /* Access Control Unit 4. */
4155 { "acr5", ACR5 }, /* Access Control Unit 5. */
4156 { "acr6", ACR6 }, /* Access Control Unit 6. */
4157 { "acr7", ACR7 }, /* Access Control Unit 7. */
4158
4159 { "tc", TC }, /* MMU Translation Control Register. */
4160 { "tcr", TC },
4161 { "asid", ASID },
4162
4163 { "mmusr", MMUSR }, /* MMU Status Register. */
4164 { "srp", SRP }, /* User Root Pointer. */
4165 { "urp", URP }, /* Supervisor Root Pointer. */
4166
4167 { "buscr", BUSCR },
4168 { "mmubar", MMUBAR },
4169 { "pcr", PCR },
4170
4171 { "rombar", ROMBAR }, /* ROM Base Address Register. */
4172 { "rambar0", RAMBAR0 }, /* ROM Base Address Register. */
4173 { "rambar1", RAMBAR1 }, /* ROM Base Address Register. */
4174 { "mbar", MBAR }, /* Module Base Address Register. */
4175
4176 { "mbar0", MBAR0 }, /* mcfv4e registers. */
4177 { "mbar1", MBAR1 }, /* mcfv4e registers. */
4178 { "rombar0", ROMBAR0 }, /* mcfv4e registers. */
4179 { "rombar1", ROMBAR1 }, /* mcfv4e registers. */
4180 { "mpcr", MPCR }, /* mcfv4e registers. */
4181 { "edrambar", EDRAMBAR }, /* mcfv4e registers. */
4182 { "secmbar", SECMBAR }, /* mcfv4e registers. */
4183 { "asid", TC }, /* mcfv4e registers. */
4184 { "mmubar", BUSCR }, /* mcfv4e registers. */
4185 { "pcr1u0", PCR1U0 }, /* mcfv4e registers. */
4186 { "pcr1l0", PCR1L0 }, /* mcfv4e registers. */
4187 { "pcr2u0", PCR2U0 }, /* mcfv4e registers. */
4188 { "pcr2l0", PCR2L0 }, /* mcfv4e registers. */
4189 { "pcr3u0", PCR3U0 }, /* mcfv4e registers. */
4190 { "pcr3l0", PCR3L0 }, /* mcfv4e registers. */
4191 { "pcr1u1", PCR1U1 }, /* mcfv4e registers. */
4192 { "pcr1l1", PCR1L1 }, /* mcfv4e registers. */
4193 { "pcr2u1", PCR2U1 }, /* mcfv4e registers. */
4194 { "pcr2l1", PCR2L1 }, /* mcfv4e registers. */
4195 { "pcr3u1", PCR3U1 }, /* mcfv4e registers. */
4196 { "pcr3l1", PCR3L1 }, /* mcfv4e registers. */
4197
4198 { "flashbar", FLASHBAR }, /* mcf528x registers. */
4199 { "rambar", RAMBAR }, /* mcf528x registers. */
4200
4201 { "mbar2", MBAR2 }, /* mcf5249 registers. */
4202
4203 { "rgpiobar", RGPIOBAR }, /* mcf54418 registers. */
4204
4205 { "cac", CAC }, /* fido registers. */
4206 { "mbb", MBO }, /* fido registers (obsolete). */
4207 { "mbo", MBO }, /* fido registers. */
4208 /* End of control registers. */
4209
4210 { "ac", AC },
4211 { "bc", BC },
4212 { "cal", CAL },
4213 { "crp", CRP },
4214 { "drp", DRP },
4215 { "pcsr", PCSR },
4216 { "psr", PSR },
4217 { "scc", SCC },
4218 { "val", VAL },
4219 { "bad0", BAD0 },
4220 { "bad1", BAD1 },
4221 { "bad2", BAD2 },
4222 { "bad3", BAD3 },
4223 { "bad4", BAD4 },
4224 { "bad5", BAD5 },
4225 { "bad6", BAD6 },
4226 { "bad7", BAD7 },
4227 { "bac0", BAC0 },
4228 { "bac1", BAC1 },
4229 { "bac2", BAC2 },
4230 { "bac3", BAC3 },
4231 { "bac4", BAC4 },
4232 { "bac5", BAC5 },
4233 { "bac6", BAC6 },
4234 { "bac7", BAC7 },
4235
4236 { "ic", IC },
4237 { "dc", DC },
4238 { "nc", NC },
4239
4240 { "tt0", TT0 },
4241 { "tt1", TT1 },
4242 /* 68ec030 versions of same. */
4243 { "ac0", TT0 },
4244 { "ac1", TT1 },
4245 /* 68ec030 access control unit, identical to 030 MMU status reg. */
4246 { "acusr", PSR },
4247
4248 /* Suppressed data and address registers. */
4249 { "zd0", ZDATA0 },
4250 { "zd1", ZDATA1 },
4251 { "zd2", ZDATA2 },
4252 { "zd3", ZDATA3 },
4253 { "zd4", ZDATA4 },
4254 { "zd5", ZDATA5 },
4255 { "zd6", ZDATA6 },
4256 { "zd7", ZDATA7 },
4257 { "za0", ZADDR0 },
4258 { "za1", ZADDR1 },
4259 { "za2", ZADDR2 },
4260 { "za3", ZADDR3 },
4261 { "za4", ZADDR4 },
4262 { "za5", ZADDR5 },
4263 { "za6", ZADDR6 },
4264 { "za7", ZADDR7 },
4265
4266 /* Upper and lower data and address registers, used by macw and msacw. */
4267 { "d0l", DATA0L },
4268 { "d1l", DATA1L },
4269 { "d2l", DATA2L },
4270 { "d3l", DATA3L },
4271 { "d4l", DATA4L },
4272 { "d5l", DATA5L },
4273 { "d6l", DATA6L },
4274 { "d7l", DATA7L },
4275
4276 { "a0l", ADDR0L },
4277 { "a1l", ADDR1L },
4278 { "a2l", ADDR2L },
4279 { "a3l", ADDR3L },
4280 { "a4l", ADDR4L },
4281 { "a5l", ADDR5L },
4282 { "a6l", ADDR6L },
4283 { "a7l", ADDR7L },
4284
4285 { "d0u", DATA0U },
4286 { "d1u", DATA1U },
4287 { "d2u", DATA2U },
4288 { "d3u", DATA3U },
4289 { "d4u", DATA4U },
4290 { "d5u", DATA5U },
4291 { "d6u", DATA6U },
4292 { "d7u", DATA7U },
4293
4294 { "a0u", ADDR0U },
4295 { "a1u", ADDR1U },
4296 { "a2u", ADDR2U },
4297 { "a3u", ADDR3U },
4298 { "a4u", ADDR4U },
4299 { "a5u", ADDR5U },
4300 { "a6u", ADDR6U },
4301 { "a7u", ADDR7U },
4302
4303 { 0, 0 }
4304 };
4305
4306 static void
4307 init_regtable (void)
4308 {
4309 int i;
4310 for (i = 0; init_table[i].name; i++)
4311 insert_reg (init_table[i].name, init_table[i].number);
4312 }
4313
4314 void
4315 md_assemble (char *str)
4316 {
4317 const char *er;
4318 short *fromP;
4319 char *toP = NULL;
4320 int m, n = 0;
4321 char *to_beg_P;
4322 int shorts_this_frag;
4323 fixS *fixP;
4324
4325 if (!selected_cpu && !selected_arch)
4326 {
4327 /* We've not selected an architecture yet. Set the default
4328 now. We do this lazily so that an initial .cpu or .arch directive
4329 can specify. */
4330 if (!m68k_set_cpu (TARGET_CPU, 1, 1))
4331 as_bad (_("unrecognized default cpu `%s'"), TARGET_CPU);
4332 }
4333 if (!initialized)
4334 m68k_init_arch ();
4335
4336 /* In MRI mode, the instruction and operands are separated by a
4337 space. Anything following the operands is a comment. The label
4338 has already been removed. */
4339 if (flag_mri)
4340 {
4341 char *s;
4342 int fields = 0;
4343 int infield = 0;
4344 int inquote = 0;
4345
4346 for (s = str; *s != '\0'; s++)
4347 {
4348 if ((*s == ' ' || *s == '\t') && ! inquote)
4349 {
4350 if (infield)
4351 {
4352 ++fields;
4353 if (fields >= 2)
4354 {
4355 *s = '\0';
4356 break;
4357 }
4358 infield = 0;
4359 }
4360 }
4361 else
4362 {
4363 if (! infield)
4364 infield = 1;
4365 if (*s == '\'')
4366 inquote = ! inquote;
4367 }
4368 }
4369 }
4370
4371 memset (&the_ins, '\0', sizeof (the_ins));
4372 m68k_ip (str);
4373 er = the_ins.error;
4374 if (!er)
4375 {
4376 for (n = 0; n < the_ins.numargs; n++)
4377 if (the_ins.operands[n].error)
4378 {
4379 er = the_ins.operands[n].error;
4380 break;
4381 }
4382 }
4383 if (er)
4384 {
4385 as_bad (_("%s -- statement `%s' ignored"), er, str);
4386 return;
4387 }
4388
4389 /* If there is a current label, record that it marks an instruction. */
4390 if (current_label != NULL)
4391 {
4392 current_label->text = 1;
4393 current_label = NULL;
4394 }
4395
4396 #ifdef OBJ_ELF
4397 /* Tie dwarf2 debug info to the address at the start of the insn. */
4398 dwarf2_emit_insn (0);
4399 #endif
4400
4401 if (the_ins.nfrag == 0)
4402 {
4403 /* No frag hacking involved; just put it out. */
4404 toP = frag_more (2 * the_ins.numo);
4405 fromP = &the_ins.opcode[0];
4406 for (m = the_ins.numo; m; --m)
4407 {
4408 md_number_to_chars (toP, (long) (*fromP), 2);
4409 toP += 2;
4410 fromP++;
4411 }
4412 /* Put out symbol-dependent info. */
4413 for (m = 0; m < the_ins.nrel; m++)
4414 {
4415 switch (the_ins.reloc[m].wid)
4416 {
4417 case 'B':
4418 n = 1;
4419 break;
4420 case 'b':
4421 n = 1;
4422 break;
4423 case '3':
4424 n = 1;
4425 break;
4426 case 'w':
4427 case 'W':
4428 n = 2;
4429 break;
4430 case 'l':
4431 n = 4;
4432 break;
4433 default:
4434 as_fatal (_("Don't know how to figure width of %c in md_assemble()"),
4435 the_ins.reloc[m].wid);
4436 }
4437
4438 fixP = fix_new_exp (frag_now,
4439 ((toP - frag_now->fr_literal)
4440 - the_ins.numo * 2 + the_ins.reloc[m].n),
4441 n,
4442 &the_ins.reloc[m].exp,
4443 the_ins.reloc[m].pcrel,
4444 get_reloc_code (n, the_ins.reloc[m].pcrel,
4445 the_ins.reloc[m].pic_reloc));
4446 fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
4447 if (the_ins.reloc[m].wid == 'B')
4448 fixP->fx_signed = 1;
4449 }
4450 return;
4451 }
4452
4453 /* There's some frag hacking. */
4454 {
4455 /* Calculate the max frag size. */
4456 int wid;
4457
4458 wid = 2 * the_ins.fragb[0].fragoff;
4459 for (n = 1; n < the_ins.nfrag; n++)
4460 wid += 2 * (the_ins.numo - the_ins.fragb[n - 1].fragoff);
4461 /* frag_var part. */
4462 wid += FRAG_VAR_SIZE;
4463 /* Make sure the whole insn fits in one chunk, in particular that
4464 the var part is attached, as we access one byte before the
4465 variable frag for byte branches. */
4466 frag_grow (wid);
4467 }
4468
4469 for (n = 0, fromP = &the_ins.opcode[0]; n < the_ins.nfrag; n++)
4470 {
4471 int wid;
4472
4473 if (n == 0)
4474 wid = 2 * the_ins.fragb[n].fragoff;
4475 else
4476 wid = 2 * (the_ins.numo - the_ins.fragb[n - 1].fragoff);
4477 toP = frag_more (wid);
4478 to_beg_P = toP;
4479 shorts_this_frag = 0;
4480 for (m = wid / 2; m; --m)
4481 {
4482 md_number_to_chars (toP, (long) (*fromP), 2);
4483 toP += 2;
4484 fromP++;
4485 shorts_this_frag++;
4486 }
4487 for (m = 0; m < the_ins.nrel; m++)
4488 {
4489 if ((the_ins.reloc[m].n) >= 2 * shorts_this_frag)
4490 {
4491 the_ins.reloc[m].n -= 2 * shorts_this_frag;
4492 break;
4493 }
4494 wid = the_ins.reloc[m].wid;
4495 if (wid == 0)
4496 continue;
4497 the_ins.reloc[m].wid = 0;
4498 wid = (wid == 'b') ? 1 : (wid == 'w') ? 2 : (wid == 'l') ? 4 : 4000;
4499
4500 fixP = fix_new_exp (frag_now,
4501 ((toP - frag_now->fr_literal)
4502 - the_ins.numo * 2 + the_ins.reloc[m].n),
4503 wid,
4504 &the_ins.reloc[m].exp,
4505 the_ins.reloc[m].pcrel,
4506 get_reloc_code (wid, the_ins.reloc[m].pcrel,
4507 the_ins.reloc[m].pic_reloc));
4508 fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
4509 }
4510 (void) frag_var (rs_machine_dependent, FRAG_VAR_SIZE, 0,
4511 (relax_substateT) (the_ins.fragb[n].fragty),
4512 the_ins.fragb[n].fadd, the_ins.fragb[n].foff, to_beg_P);
4513 }
4514 gas_assert (the_ins.nfrag >= 1);
4515 n = the_ins.numo - the_ins.fragb[the_ins.nfrag - 1].fragoff;
4516 shorts_this_frag = 0;
4517 if (n)
4518 {
4519 toP = frag_more (n * 2);
4520 while (n--)
4521 {
4522 md_number_to_chars (toP, (long) (*fromP), 2);
4523 toP += 2;
4524 fromP++;
4525 shorts_this_frag++;
4526 }
4527 }
4528 for (m = 0; m < the_ins.nrel; m++)
4529 {
4530 int wid;
4531
4532 wid = the_ins.reloc[m].wid;
4533 if (wid == 0)
4534 continue;
4535 the_ins.reloc[m].wid = 0;
4536 wid = (wid == 'b') ? 1 : (wid == 'w') ? 2 : (wid == 'l') ? 4 : 4000;
4537
4538 fixP = fix_new_exp (frag_now,
4539 ((the_ins.reloc[m].n + toP - frag_now->fr_literal)
4540 - shorts_this_frag * 2),
4541 wid,
4542 &the_ins.reloc[m].exp,
4543 the_ins.reloc[m].pcrel,
4544 get_reloc_code (wid, the_ins.reloc[m].pcrel,
4545 the_ins.reloc[m].pic_reloc));
4546 fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
4547 }
4548 }
4549
4550 /* Comparison function used by qsort to rank the opcode entries by name. */
4551
4552 static int
4553 m68k_compare_opcode (const void * v1, const void * v2)
4554 {
4555 struct m68k_opcode * op1, * op2;
4556 int ret;
4557
4558 if (v1 == v2)
4559 return 0;
4560
4561 op1 = *(struct m68k_opcode **) v1;
4562 op2 = *(struct m68k_opcode **) v2;
4563
4564 /* Compare the two names. If different, return the comparison.
4565 If the same, return the order they are in the opcode table. */
4566 ret = strcmp (op1->name, op2->name);
4567 if (ret)
4568 return ret;
4569 if (op1 < op2)
4570 return -1;
4571 return 1;
4572 }
4573
4574 void
4575 md_begin (void)
4576 {
4577 const struct m68k_opcode *ins;
4578 struct m68k_incant *hack, *slak;
4579 const char *retval = 0; /* Empty string, or error msg text. */
4580 int i;
4581
4582 /* Set up hash tables with 68000 instructions.
4583 similar to what the vax assembler does. */
4584 /* RMS claims the thing to do is take the m68k-opcode.h table, and make
4585 a copy of it at runtime, adding in the information we want but isn't
4586 there. I think it'd be better to have an awk script hack the table
4587 at compile time. Or even just xstr the table and use it as-is. But
4588 my lord ghod hath spoken, so we do it this way. Excuse the ugly var
4589 names. */
4590
4591 if (flag_mri)
4592 {
4593 flag_reg_prefix_optional = 1;
4594 m68k_abspcadd = 1;
4595 if (! m68k_rel32_from_cmdline)
4596 m68k_rel32 = 0;
4597 }
4598
4599 /* First sort the opcode table into alphabetical order to seperate
4600 the order that the assembler wants to see the opcodes from the
4601 order that the disassembler wants to see them. */
4602 m68k_sorted_opcodes = xmalloc (m68k_numopcodes * sizeof (* m68k_sorted_opcodes));
4603 if (!m68k_sorted_opcodes)
4604 as_fatal (_("Internal Error: Can't allocate m68k_sorted_opcodes of size %d"),
4605 m68k_numopcodes * ((int) sizeof (* m68k_sorted_opcodes)));
4606
4607 for (i = m68k_numopcodes; i--;)
4608 m68k_sorted_opcodes[i] = m68k_opcodes + i;
4609
4610 qsort (m68k_sorted_opcodes, m68k_numopcodes,
4611 sizeof (m68k_sorted_opcodes[0]), m68k_compare_opcode);
4612
4613 op_hash = hash_new ();
4614
4615 obstack_begin (&robyn, 4000);
4616 for (i = 0; i < m68k_numopcodes; i++)
4617 {
4618 hack = slak = obstack_alloc (&robyn, sizeof (struct m68k_incant));
4619 do
4620 {
4621 ins = m68k_sorted_opcodes[i];
4622
4623 /* We must enter all insns into the table, because .arch and
4624 .cpu directives can change things. */
4625 slak->m_operands = ins->args;
4626 slak->m_arch = ins->arch;
4627 slak->m_opcode = ins->opcode;
4628
4629 /* In most cases we can determine the number of opcode words
4630 by checking the second word of the mask. Unfortunately
4631 some instructions have 2 opcode words, but no fixed bits
4632 in the second word. A leading dot in the operands
4633 string also indicates 2 opcodes. */
4634 if (*slak->m_operands == '.')
4635 {
4636 slak->m_operands++;
4637 slak->m_codenum = 2;
4638 }
4639 else if (ins->match & 0xffffL)
4640 slak->m_codenum = 2;
4641 else
4642 slak->m_codenum = 1;
4643 slak->m_opnum = strlen (slak->m_operands) / 2;
4644
4645 if (i + 1 != m68k_numopcodes
4646 && !strcmp (ins->name, m68k_sorted_opcodes[i + 1]->name))
4647 {
4648 slak->m_next = obstack_alloc (&robyn, sizeof (struct m68k_incant));
4649 i++;
4650 }
4651 else
4652 slak->m_next = 0;
4653 slak = slak->m_next;
4654 }
4655 while (slak);
4656
4657 retval = hash_insert (op_hash, ins->name, (char *) hack);
4658 if (retval)
4659 as_fatal (_("Internal Error: Can't hash %s: %s"), ins->name, retval);
4660 }
4661
4662 for (i = 0; i < m68k_numaliases; i++)
4663 {
4664 const char *name = m68k_opcode_aliases[i].primary;
4665 const char *alias = m68k_opcode_aliases[i].alias;
4666 void *val = hash_find (op_hash, name);
4667
4668 if (!val)
4669 as_fatal (_("Internal Error: Can't find %s in hash table"), name);
4670 retval = hash_insert (op_hash, alias, val);
4671 if (retval)
4672 as_fatal (_("Internal Error: Can't hash %s: %s"), alias, retval);
4673 }
4674
4675 /* In MRI mode, all unsized branches are variable sized. Normally,
4676 they are word sized. */
4677 if (flag_mri)
4678 {
4679 static struct m68k_opcode_alias mri_aliases[] =
4680 {
4681 { "bhi", "jhi", },
4682 { "bls", "jls", },
4683 { "bcc", "jcc", },
4684 { "bcs", "jcs", },
4685 { "bne", "jne", },
4686 { "beq", "jeq", },
4687 { "bvc", "jvc", },
4688 { "bvs", "jvs", },
4689 { "bpl", "jpl", },
4690 { "bmi", "jmi", },
4691 { "bge", "jge", },
4692 { "blt", "jlt", },
4693 { "bgt", "jgt", },
4694 { "ble", "jle", },
4695 { "bra", "jra", },
4696 { "bsr", "jbsr", },
4697 };
4698
4699 for (i = 0;
4700 i < (int) (sizeof mri_aliases / sizeof mri_aliases[0]);
4701 i++)
4702 {
4703 const char *name = mri_aliases[i].primary;
4704 const char *alias = mri_aliases[i].alias;
4705 void *val = hash_find (op_hash, name);
4706
4707 if (!val)
4708 as_fatal (_("Internal Error: Can't find %s in hash table"), name);
4709 retval = hash_jam (op_hash, alias, val);
4710 if (retval)
4711 as_fatal (_("Internal Error: Can't hash %s: %s"), alias, retval);
4712 }
4713 }
4714
4715 for (i = 0; i < (int) sizeof (notend_table); i++)
4716 {
4717 notend_table[i] = 0;
4718 alt_notend_table[i] = 0;
4719 }
4720
4721 notend_table[','] = 1;
4722 notend_table['{'] = 1;
4723 notend_table['}'] = 1;
4724 alt_notend_table['a'] = 1;
4725 alt_notend_table['A'] = 1;
4726 alt_notend_table['d'] = 1;
4727 alt_notend_table['D'] = 1;
4728 alt_notend_table['#'] = 1;
4729 alt_notend_table['&'] = 1;
4730 alt_notend_table['f'] = 1;
4731 alt_notend_table['F'] = 1;
4732 #ifdef REGISTER_PREFIX
4733 alt_notend_table[REGISTER_PREFIX] = 1;
4734 #endif
4735
4736 /* We need to put '(' in alt_notend_table to handle
4737 cas2 %d0:%d2,%d3:%d4,(%a0):(%a1) */
4738 alt_notend_table['('] = 1;
4739
4740 /* We need to put '@' in alt_notend_table to handle
4741 cas2 %d0:%d2,%d3:%d4,@(%d0):@(%d1) */
4742 alt_notend_table['@'] = 1;
4743
4744 /* We need to put digits in alt_notend_table to handle
4745 bfextu %d0{24:1},%d0 */
4746 alt_notend_table['0'] = 1;
4747 alt_notend_table['1'] = 1;
4748 alt_notend_table['2'] = 1;
4749 alt_notend_table['3'] = 1;
4750 alt_notend_table['4'] = 1;
4751 alt_notend_table['5'] = 1;
4752 alt_notend_table['6'] = 1;
4753 alt_notend_table['7'] = 1;
4754 alt_notend_table['8'] = 1;
4755 alt_notend_table['9'] = 1;
4756
4757 #ifndef MIT_SYNTAX_ONLY
4758 /* Insert pseudo ops, these have to go into the opcode table since
4759 gas expects pseudo ops to start with a dot. */
4760 {
4761 int n = 0;
4762
4763 while (mote_pseudo_table[n].poc_name)
4764 {
4765 hack = obstack_alloc (&robyn, sizeof (struct m68k_incant));
4766 hash_insert (op_hash,
4767 mote_pseudo_table[n].poc_name, (char *) hack);
4768 hack->m_operands = 0;
4769 hack->m_opnum = n;
4770 n++;
4771 }
4772 }
4773 #endif
4774
4775 init_regtable ();
4776
4777 #ifdef OBJ_ELF
4778 record_alignment (text_section, 2);
4779 record_alignment (data_section, 2);
4780 record_alignment (bss_section, 2);
4781 #endif
4782 }
4783
4784 \f
4785 /* This is called when a label is defined. */
4786
4787 void
4788 m68k_frob_label (symbolS *sym)
4789 {
4790 struct label_line *n;
4791
4792 n = (struct label_line *) xmalloc (sizeof *n);
4793 n->next = labels;
4794 n->label = sym;
4795 as_where (&n->file, &n->line);
4796 n->text = 0;
4797 labels = n;
4798 current_label = n;
4799
4800 #ifdef OBJ_ELF
4801 dwarf2_emit_label (sym);
4802 #endif
4803 }
4804
4805 /* This is called when a value that is not an instruction is emitted. */
4806
4807 void
4808 m68k_flush_pending_output (void)
4809 {
4810 current_label = NULL;
4811 }
4812
4813 /* This is called at the end of the assembly, when the final value of
4814 the label is known. We warn if this is a text symbol aligned at an
4815 odd location. */
4816
4817 void
4818 m68k_frob_symbol (symbolS *sym)
4819 {
4820 if (S_GET_SEGMENT (sym) == reg_section
4821 && (int) S_GET_VALUE (sym) < 0)
4822 {
4823 S_SET_SEGMENT (sym, absolute_section);
4824 S_SET_VALUE (sym, ~(int)S_GET_VALUE (sym));
4825 }
4826 else if ((S_GET_VALUE (sym) & 1) != 0)
4827 {
4828 struct label_line *l;
4829
4830 for (l = labels; l != NULL; l = l->next)
4831 {
4832 if (l->label == sym)
4833 {
4834 if (l->text)
4835 as_warn_where (l->file, l->line,
4836 _("text label `%s' aligned to odd boundary"),
4837 S_GET_NAME (sym));
4838 break;
4839 }
4840 }
4841 }
4842 }
4843 \f
4844 /* This is called if we go in or out of MRI mode because of the .mri
4845 pseudo-op. */
4846
4847 void
4848 m68k_mri_mode_change (int on)
4849 {
4850 if (on)
4851 {
4852 if (! flag_reg_prefix_optional)
4853 {
4854 flag_reg_prefix_optional = 1;
4855 #ifdef REGISTER_PREFIX
4856 init_regtable ();
4857 #endif
4858 }
4859 m68k_abspcadd = 1;
4860 if (! m68k_rel32_from_cmdline)
4861 m68k_rel32 = 0;
4862 }
4863 else
4864 {
4865 if (! reg_prefix_optional_seen)
4866 {
4867 #ifdef REGISTER_PREFIX_OPTIONAL
4868 flag_reg_prefix_optional = REGISTER_PREFIX_OPTIONAL;
4869 #else
4870 flag_reg_prefix_optional = 0;
4871 #endif
4872 #ifdef REGISTER_PREFIX
4873 init_regtable ();
4874 #endif
4875 }
4876 m68k_abspcadd = 0;
4877 if (! m68k_rel32_from_cmdline)
4878 m68k_rel32 = 1;
4879 }
4880 }
4881
4882 char *
4883 md_atof (int type, char *litP, int *sizeP)
4884 {
4885 return ieee_md_atof (type, litP, sizeP, TRUE);
4886 }
4887
4888 void
4889 md_number_to_chars (char *buf, valueT val, int n)
4890 {
4891 number_to_chars_bigendian (buf, val, n);
4892 }
4893
4894 void
4895 md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
4896 {
4897 offsetT val = *valP;
4898 addressT upper_limit;
4899 offsetT lower_limit;
4900
4901 /* This is unnecessary but it convinces the native rs6000 compiler
4902 to generate the code we want. */
4903 char *buf = fixP->fx_frag->fr_literal;
4904 buf += fixP->fx_where;
4905 /* End ibm compiler workaround. */
4906
4907 val = SEXT (val);
4908
4909 if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
4910 fixP->fx_done = 1;
4911
4912 #ifdef OBJ_ELF
4913 if (fixP->fx_addsy)
4914 {
4915 memset (buf, 0, fixP->fx_size);
4916 fixP->fx_addnumber = val; /* Remember value for emit_reloc. */
4917
4918 if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
4919 && !S_IS_DEFINED (fixP->fx_addsy)
4920 && !S_IS_WEAK (fixP->fx_addsy))
4921 S_SET_WEAK (fixP->fx_addsy);
4922
4923 switch (fixP->fx_r_type)
4924 {
4925 case BFD_RELOC_68K_TLS_GD32:
4926 case BFD_RELOC_68K_TLS_GD16:
4927 case BFD_RELOC_68K_TLS_GD8:
4928 case BFD_RELOC_68K_TLS_LDM32:
4929 case BFD_RELOC_68K_TLS_LDM16:
4930 case BFD_RELOC_68K_TLS_LDM8:
4931 case BFD_RELOC_68K_TLS_LDO32:
4932 case BFD_RELOC_68K_TLS_LDO16:
4933 case BFD_RELOC_68K_TLS_LDO8:
4934 case BFD_RELOC_68K_TLS_IE32:
4935 case BFD_RELOC_68K_TLS_IE16:
4936 case BFD_RELOC_68K_TLS_IE8:
4937 case BFD_RELOC_68K_TLS_LE32:
4938 case BFD_RELOC_68K_TLS_LE16:
4939 case BFD_RELOC_68K_TLS_LE8:
4940 S_SET_THREAD_LOCAL (fixP->fx_addsy);
4941 break;
4942
4943 default:
4944 break;
4945 }
4946
4947 return;
4948 }
4949 #elif defined(OBJ_AOUT)
4950 /* PR gas/3041 Do not fix frags referencing a weak symbol. */
4951 if (fixP->fx_addsy && S_IS_WEAK (fixP->fx_addsy))
4952 {
4953 memset (buf, 0, fixP->fx_size);
4954 fixP->fx_addnumber = val; /* Remember value for emit_reloc. */
4955 return;
4956 }
4957 #endif
4958
4959 if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
4960 || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
4961 return;
4962
4963 switch (fixP->fx_size)
4964 {
4965 /* The cast to offsetT below are necessary to make code
4966 correct for machines where ints are smaller than offsetT. */
4967 case 1:
4968 *buf++ = val;
4969 upper_limit = 0x7f;
4970 lower_limit = - (offsetT) 0x80;
4971 break;
4972 case 2:
4973 *buf++ = (val >> 8);
4974 *buf++ = val;
4975 upper_limit = 0x7fff;
4976 lower_limit = - (offsetT) 0x8000;
4977 break;
4978 case 4:
4979 *buf++ = (val >> 24);
4980 *buf++ = (val >> 16);
4981 *buf++ = (val >> 8);
4982 *buf++ = val;
4983 upper_limit = 0x7fffffff;
4984 lower_limit = - (offsetT) 0x7fffffff - 1; /* Avoid constant overflow. */
4985 break;
4986 default:
4987 BAD_CASE (fixP->fx_size);
4988 }
4989
4990 /* Fix up a negative reloc. */
4991 if (fixP->fx_addsy == NULL && fixP->fx_subsy != NULL)
4992 {
4993 fixP->fx_addsy = fixP->fx_subsy;
4994 fixP->fx_subsy = NULL;
4995 fixP->fx_tcbit = 1;
4996 }
4997
4998 /* For non-pc-relative values, it's conceivable we might get something
4999 like "0xff" for a byte field. So extend the upper part of the range
5000 to accept such numbers. We arbitrarily disallow "-0xff" or "0xff+0xff",
5001 so that we can do any range checking at all. */
5002 if (! fixP->fx_pcrel && ! fixP->fx_signed)
5003 upper_limit = upper_limit * 2 + 1;
5004
5005 if ((addressT) val > upper_limit
5006 && (val > 0 || val < lower_limit))
5007 as_bad_where (fixP->fx_file, fixP->fx_line,
5008 _("value %ld out of range"), (long)val);
5009
5010 /* A one byte PC-relative reloc means a short branch. We can't use
5011 a short branch with a value of 0 or -1, because those indicate
5012 different opcodes (branches with longer offsets). fixup_segment
5013 in write.c may have clobbered fx_pcrel, so we need to examine the
5014 reloc type. */
5015 if ((fixP->fx_pcrel
5016 || fixP->fx_r_type == BFD_RELOC_8_PCREL)
5017 && fixP->fx_size == 1
5018 && (fixP->fx_addsy == NULL
5019 || S_IS_DEFINED (fixP->fx_addsy))
5020 && (val == 0 || val == -1))
5021 as_bad_where (fixP->fx_file, fixP->fx_line,
5022 _("invalid byte branch offset"));
5023 }
5024
5025 /* *fragP has been relaxed to its final size, and now needs to have
5026 the bytes inside it modified to conform to the new size There is UGLY
5027 MAGIC here. ..
5028 */
5029 static void
5030 md_convert_frag_1 (fragS *fragP)
5031 {
5032 long disp;
5033 fixS *fixP = NULL;
5034
5035 /* Address in object code of the displacement. */
5036 int object_address = fragP->fr_fix + fragP->fr_address;
5037
5038 /* Address in gas core of the place to store the displacement. */
5039 /* This convinces the native rs6000 compiler to generate the code we
5040 want. */
5041 char *buffer_address = fragP->fr_literal;
5042 buffer_address += fragP->fr_fix;
5043 /* End ibm compiler workaround. */
5044
5045 /* The displacement of the address, from current location. */
5046 disp = fragP->fr_symbol ? S_GET_VALUE (fragP->fr_symbol) : 0;
5047 disp = (disp + fragP->fr_offset) - object_address;
5048
5049 switch (fragP->fr_subtype)
5050 {
5051 case TAB (BRANCHBWL, BYTE):
5052 case TAB (BRABSJUNC, BYTE):
5053 case TAB (BRABSJCOND, BYTE):
5054 case TAB (BRANCHBW, BYTE):
5055 case TAB (BRANCHBWPL, BYTE):
5056 know (issbyte (disp));
5057 if (disp == 0)
5058 as_bad_where (fragP->fr_file, fragP->fr_line,
5059 _("short branch with zero offset: use :w"));
5060 fixP = fix_new (fragP, fragP->fr_fix - 1, 1, fragP->fr_symbol,
5061 fragP->fr_offset, 1, RELAX_RELOC_PC8);
5062 fixP->fx_pcrel_adjust = -1;
5063 break;
5064 case TAB (BRANCHBWL, SHORT):
5065 case TAB (BRABSJUNC, SHORT):
5066 case TAB (BRABSJCOND, SHORT):
5067 case TAB (BRANCHBW, SHORT):
5068 case TAB (BRANCHBWPL, SHORT):
5069 fragP->fr_opcode[1] = 0x00;
5070 fixP = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
5071 fragP->fr_offset, 1, RELAX_RELOC_PC16);
5072 fragP->fr_fix += 2;
5073 break;
5074 case TAB (BRANCHBWL, LONG):
5075 fragP->fr_opcode[1] = (char) 0xFF;
5076 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
5077 fragP->fr_offset, 1, RELAX_RELOC_PC32);
5078 fragP->fr_fix += 4;
5079 break;
5080 case TAB (BRANCHBWPL, LONG):
5081 /* Here we are converting an unconditional branch into a pair of
5082 conditional branches, in order to get the range. */
5083 fragP->fr_opcode[0] = 0x66; /* bne */
5084 fragP->fr_opcode[1] = 0xFF;
5085 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
5086 fragP->fr_offset, 1, RELAX_RELOC_PC32);
5087 fixP->fx_file = fragP->fr_file;
5088 fixP->fx_line = fragP->fr_line;
5089 fragP->fr_fix += 4; /* Skip first offset */
5090 buffer_address += 4;
5091 *buffer_address++ = 0x67; /* beq */
5092 *buffer_address++ = 0xff;
5093 fragP->fr_fix += 2; /* Skip second branch opcode */
5094 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
5095 fragP->fr_offset, 1, RELAX_RELOC_PC32);
5096 fragP->fr_fix += 4;
5097 break;
5098 case TAB (BRABSJUNC, LONG):
5099 if (fragP->fr_opcode[0] == 0x61) /* jbsr */
5100 {
5101 if (flag_keep_pcrel)
5102 as_bad_where (fragP->fr_file, fragP->fr_line,
5103 _("Conversion of PC relative BSR to absolute JSR"));
5104 fragP->fr_opcode[0] = 0x4E;
5105 fragP->fr_opcode[1] = (char) 0xB9; /* JSR with ABSL LONG operand. */
5106 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
5107 fragP->fr_offset, 0, RELAX_RELOC_ABS32);
5108 fragP->fr_fix += 4;
5109 }
5110 else if (fragP->fr_opcode[0] == 0x60) /* jbra */
5111 {
5112 if (flag_keep_pcrel)
5113 as_bad_where (fragP->fr_file, fragP->fr_line,
5114 _("Conversion of PC relative branch to absolute jump"));
5115 fragP->fr_opcode[0] = 0x4E;
5116 fragP->fr_opcode[1] = (char) 0xF9; /* JMP with ABSL LONG operand. */
5117 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
5118 fragP->fr_offset, 0, RELAX_RELOC_ABS32);
5119 fragP->fr_fix += 4;
5120 }
5121 else
5122 {
5123 /* This cannot happen, because jbsr and jbra are the only two
5124 unconditional branches. */
5125 abort ();
5126 }
5127 break;
5128 case TAB (BRABSJCOND, LONG):
5129 if (flag_keep_pcrel)
5130 as_bad_where (fragP->fr_file, fragP->fr_line,
5131 _("Conversion of PC relative conditional branch to absolute jump"));
5132
5133 /* Only Bcc 68000 instructions can come here
5134 Change bcc into b!cc/jmp absl long. */
5135 fragP->fr_opcode[0] ^= 0x01; /* Invert bcc. */
5136 fragP->fr_opcode[1] = 0x06; /* Branch offset = 6. */
5137
5138 /* JF: these used to be fr_opcode[2,3], but they may be in a
5139 different frag, in which case referring to them is a no-no.
5140 Only fr_opcode[0,1] are guaranteed to work. */
5141 *buffer_address++ = 0x4e; /* put in jmp long (0x4ef9) */
5142 *buffer_address++ = (char) 0xf9;
5143 fragP->fr_fix += 2; /* Account for jmp instruction. */
5144 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
5145 fragP->fr_offset, 0, RELAX_RELOC_ABS32);
5146 fragP->fr_fix += 4;
5147 break;
5148 case TAB (FBRANCH, SHORT):
5149 know ((fragP->fr_opcode[1] & 0x40) == 0);
5150 fixP = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
5151 fragP->fr_offset, 1, RELAX_RELOC_PC16);
5152 fragP->fr_fix += 2;
5153 break;
5154 case TAB (FBRANCH, LONG):
5155 fragP->fr_opcode[1] |= 0x40; /* Turn on LONG bit. */
5156 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
5157 fragP->fr_offset, 1, RELAX_RELOC_PC32);
5158 fragP->fr_fix += 4;
5159 break;
5160 case TAB (DBCCLBR, SHORT):
5161 case TAB (DBCCABSJ, SHORT):
5162 fixP = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
5163 fragP->fr_offset, 1, RELAX_RELOC_PC16);
5164 fragP->fr_fix += 2;
5165 break;
5166 case TAB (DBCCLBR, LONG):
5167 /* Only DBcc instructions can come here.
5168 Change dbcc into dbcc/bral.
5169 JF: these used to be fr_opcode[2-7], but that's wrong. */
5170 *buffer_address++ = 0x00; /* Branch offset = 4. */
5171 *buffer_address++ = 0x04;
5172 *buffer_address++ = 0x60; /* Put in bra pc+6. */
5173 *buffer_address++ = 0x06;
5174 *buffer_address++ = 0x60; /* Put in bral (0x60ff). */
5175 *buffer_address++ = (char) 0xff;
5176
5177 fragP->fr_fix += 6; /* Account for bra/jmp instructions. */
5178 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
5179 fragP->fr_offset, 1, RELAX_RELOC_PC32);
5180 fragP->fr_fix += 4;
5181 break;
5182 case TAB (DBCCABSJ, LONG):
5183 /* Only DBcc instructions can come here.
5184 Change dbcc into dbcc/jmp.
5185 JF: these used to be fr_opcode[2-7], but that's wrong. */
5186 if (flag_keep_pcrel)
5187 as_bad_where (fragP->fr_file, fragP->fr_line,
5188 _("Conversion of PC relative conditional branch to absolute jump"));
5189
5190 *buffer_address++ = 0x00; /* Branch offset = 4. */
5191 *buffer_address++ = 0x04;
5192 *buffer_address++ = 0x60; /* Put in bra pc + 6. */
5193 *buffer_address++ = 0x06;
5194 *buffer_address++ = 0x4e; /* Put in jmp long (0x4ef9). */
5195 *buffer_address++ = (char) 0xf9;
5196
5197 fragP->fr_fix += 6; /* Account for bra/jmp instructions. */
5198 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
5199 fragP->fr_offset, 0, RELAX_RELOC_ABS32);
5200 fragP->fr_fix += 4;
5201 break;
5202 case TAB (PCREL1632, SHORT):
5203 fragP->fr_opcode[1] &= ~0x3F;
5204 fragP->fr_opcode[1] |= 0x3A; /* 072 - mode 7.2 */
5205 fixP = fix_new (fragP, (int) (fragP->fr_fix), 2, fragP->fr_symbol,
5206 fragP->fr_offset, 1, RELAX_RELOC_PC16);
5207 fragP->fr_fix += 2;
5208 break;
5209 case TAB (PCREL1632, LONG):
5210 /* Already set to mode 7.3; this indicates: PC indirect with
5211 suppressed index, 32-bit displacement. */
5212 *buffer_address++ = 0x01;
5213 *buffer_address++ = 0x70;
5214 fragP->fr_fix += 2;
5215 fixP = fix_new (fragP, (int) (fragP->fr_fix), 4, fragP->fr_symbol,
5216 fragP->fr_offset, 1, RELAX_RELOC_PC32);
5217 fixP->fx_pcrel_adjust = 2;
5218 fragP->fr_fix += 4;
5219 break;
5220 case TAB (PCINDEX, BYTE):
5221 gas_assert (fragP->fr_fix >= 2);
5222 buffer_address[-2] &= ~1;
5223 fixP = fix_new (fragP, fragP->fr_fix - 1, 1, fragP->fr_symbol,
5224 fragP->fr_offset, 1, RELAX_RELOC_PC8);
5225 fixP->fx_pcrel_adjust = 1;
5226 break;
5227 case TAB (PCINDEX, SHORT):
5228 gas_assert (fragP->fr_fix >= 2);
5229 buffer_address[-2] |= 0x1;
5230 buffer_address[-1] = 0x20;
5231 fixP = fix_new (fragP, (int) (fragP->fr_fix), 2, fragP->fr_symbol,
5232 fragP->fr_offset, 1, RELAX_RELOC_PC16);
5233 fixP->fx_pcrel_adjust = 2;
5234 fragP->fr_fix += 2;
5235 break;
5236 case TAB (PCINDEX, LONG):
5237 gas_assert (fragP->fr_fix >= 2);
5238 buffer_address[-2] |= 0x1;
5239 buffer_address[-1] = 0x30;
5240 fixP = fix_new (fragP, (int) (fragP->fr_fix), 4, fragP->fr_symbol,
5241 fragP->fr_offset, 1, RELAX_RELOC_PC32);
5242 fixP->fx_pcrel_adjust = 2;
5243 fragP->fr_fix += 4;
5244 break;
5245 case TAB (ABSTOPCREL, SHORT):
5246 fixP = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
5247 fragP->fr_offset, 1, RELAX_RELOC_PC16);
5248 fragP->fr_fix += 2;
5249 break;
5250 case TAB (ABSTOPCREL, LONG):
5251 if (flag_keep_pcrel)
5252 as_bad_where (fragP->fr_file, fragP->fr_line,
5253 _("Conversion of PC relative displacement to absolute"));
5254 /* The thing to do here is force it to ABSOLUTE LONG, since
5255 ABSTOPCREL is really trying to shorten an ABSOLUTE address anyway. */
5256 if ((fragP->fr_opcode[1] & 0x3F) != 0x3A)
5257 abort ();
5258 fragP->fr_opcode[1] &= ~0x3F;
5259 fragP->fr_opcode[1] |= 0x39; /* Mode 7.1 */
5260 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
5261 fragP->fr_offset, 0, RELAX_RELOC_ABS32);
5262 fragP->fr_fix += 4;
5263 break;
5264 }
5265 if (fixP)
5266 {
5267 fixP->fx_file = fragP->fr_file;
5268 fixP->fx_line = fragP->fr_line;
5269 }
5270 }
5271
5272 void
5273 md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
5274 segT sec ATTRIBUTE_UNUSED,
5275 fragS *fragP)
5276 {
5277 md_convert_frag_1 (fragP);
5278 }
5279
5280 /* Force truly undefined symbols to their maximum size, and generally set up
5281 the frag list to be relaxed
5282 */
5283 int
5284 md_estimate_size_before_relax (fragS *fragP, segT segment)
5285 {
5286 /* Handle SZ_UNDEF first, it can be changed to BYTE or SHORT. */
5287 switch (fragP->fr_subtype)
5288 {
5289 case TAB (BRANCHBWL, SZ_UNDEF):
5290 case TAB (BRANCHBWPL, SZ_UNDEF):
5291 case TAB (BRABSJUNC, SZ_UNDEF):
5292 case TAB (BRABSJCOND, SZ_UNDEF):
5293 {
5294 if (S_GET_SEGMENT (fragP->fr_symbol) == segment
5295 && relaxable_symbol (fragP->fr_symbol))
5296 {
5297 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), BYTE);
5298 }
5299 else if (flag_short_refs)
5300 {
5301 /* Symbol is undefined and we want short ref. */
5302 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
5303 }
5304 else
5305 {
5306 /* Symbol is still undefined. Make it LONG. */
5307 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), LONG);
5308 }
5309 break;
5310 }
5311
5312 case TAB (BRANCHBW, SZ_UNDEF):
5313 {
5314 if (S_GET_SEGMENT (fragP->fr_symbol) == segment
5315 && relaxable_symbol (fragP->fr_symbol))
5316 {
5317 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), BYTE);
5318 }
5319 else
5320 {
5321 /* Symbol is undefined and we don't have long branches. */
5322 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
5323 }
5324 break;
5325 }
5326
5327 case TAB (FBRANCH, SZ_UNDEF):
5328 case TAB (DBCCLBR, SZ_UNDEF):
5329 case TAB (DBCCABSJ, SZ_UNDEF):
5330 case TAB (PCREL1632, SZ_UNDEF):
5331 {
5332 if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
5333 && relaxable_symbol (fragP->fr_symbol))
5334 || flag_short_refs)
5335 {
5336 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
5337 }
5338 else
5339 {
5340 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), LONG);
5341 }
5342 break;
5343 }
5344
5345 case TAB (PCINDEX, SZ_UNDEF):
5346 if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
5347 && relaxable_symbol (fragP->fr_symbol)))
5348 {
5349 fragP->fr_subtype = TAB (PCINDEX, BYTE);
5350 }
5351 else
5352 {
5353 fragP->fr_subtype = TAB (PCINDEX, LONG);
5354 }
5355 break;
5356
5357 case TAB (ABSTOPCREL, SZ_UNDEF):
5358 {
5359 if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
5360 && relaxable_symbol (fragP->fr_symbol)))
5361 {
5362 fragP->fr_subtype = TAB (ABSTOPCREL, SHORT);
5363 }
5364 else
5365 {
5366 fragP->fr_subtype = TAB (ABSTOPCREL, LONG);
5367 }
5368 break;
5369 }
5370
5371 default:
5372 break;
5373 }
5374
5375 /* Now that SZ_UNDEF are taken care of, check others. */
5376 switch (fragP->fr_subtype)
5377 {
5378 case TAB (BRANCHBWL, BYTE):
5379 case TAB (BRABSJUNC, BYTE):
5380 case TAB (BRABSJCOND, BYTE):
5381 case TAB (BRANCHBW, BYTE):
5382 /* We can't do a short jump to the next instruction, so in that
5383 case we force word mode. If the symbol is at the start of a
5384 frag, and it is the next frag with any data in it (usually
5385 this is just the next frag, but assembler listings may
5386 introduce empty frags), we must use word mode. */
5387 if (fragP->fr_symbol)
5388 {
5389 fragS *sym_frag;
5390
5391 sym_frag = symbol_get_frag (fragP->fr_symbol);
5392 if (S_GET_VALUE (fragP->fr_symbol) == sym_frag->fr_address)
5393 {
5394 fragS *l;
5395
5396 for (l = fragP->fr_next; l && l != sym_frag; l = l->fr_next)
5397 if (l->fr_fix != 0)
5398 break;
5399 if (l == sym_frag)
5400 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
5401 }
5402 }
5403 break;
5404 default:
5405 break;
5406 }
5407 return md_relax_table[fragP->fr_subtype].rlx_length;
5408 }
5409
5410 #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
5411 /* the bit-field entries in the relocation_info struct plays hell
5412 with the byte-order problems of cross-assembly. So as a hack,
5413 I added this mach. dependent ri twiddler. Ugly, but it gets
5414 you there. -KWK */
5415 /* on m68k: first 4 bytes are normal unsigned long, next three bytes
5416 are symbolnum, most sig. byte first. Last byte is broken up with
5417 bit 7 as pcrel, bits 6 & 5 as length, bit 4 as pcrel, and the lower
5418 nibble as nuthin. (on Sun 3 at least) */
5419 /* Translate the internal relocation information into target-specific
5420 format. */
5421 #ifdef comment
5422 void
5423 md_ri_to_chars (char *the_bytes, struct reloc_info_generic *ri)
5424 {
5425 /* This is easy. */
5426 md_number_to_chars (the_bytes, ri->r_address, 4);
5427 /* Now the fun stuff. */
5428 the_bytes[4] = (ri->r_symbolnum >> 16) & 0x0ff;
5429 the_bytes[5] = (ri->r_symbolnum >> 8) & 0x0ff;
5430 the_bytes[6] = ri->r_symbolnum & 0x0ff;
5431 the_bytes[7] = (((ri->r_pcrel << 7) & 0x80)
5432 | ((ri->r_length << 5) & 0x60)
5433 | ((ri->r_extern << 4) & 0x10));
5434 }
5435
5436 #endif
5437
5438 #endif /* OBJ_AOUT or OBJ_BOUT */
5439
5440 #ifndef WORKING_DOT_WORD
5441 int md_short_jump_size = 4;
5442 int md_long_jump_size = 6;
5443
5444 void
5445 md_create_short_jump (char *ptr, addressT from_addr, addressT to_addr,
5446 fragS *frag ATTRIBUTE_UNUSED,
5447 symbolS *to_symbol ATTRIBUTE_UNUSED)
5448 {
5449 valueT offset;
5450
5451 offset = to_addr - (from_addr + 2);
5452
5453 md_number_to_chars (ptr, (valueT) 0x6000, 2);
5454 md_number_to_chars (ptr + 2, (valueT) offset, 2);
5455 }
5456
5457 void
5458 md_create_long_jump (char *ptr, addressT from_addr, addressT to_addr,
5459 fragS *frag, symbolS *to_symbol)
5460 {
5461 valueT offset;
5462
5463 if (!HAVE_LONG_BRANCH (current_architecture))
5464 {
5465 if (flag_keep_pcrel)
5466 as_fatal (_("Tried to convert PC relative branch to absolute jump"));
5467 offset = to_addr - S_GET_VALUE (to_symbol);
5468 md_number_to_chars (ptr, (valueT) 0x4EF9, 2);
5469 md_number_to_chars (ptr + 2, (valueT) offset, 4);
5470 fix_new (frag, (ptr + 2) - frag->fr_literal, 4, to_symbol, (offsetT) 0,
5471 0, NO_RELOC);
5472 }
5473 else
5474 {
5475 offset = to_addr - (from_addr + 2);
5476 md_number_to_chars (ptr, (valueT) 0x60ff, 2);
5477 md_number_to_chars (ptr + 2, (valueT) offset, 4);
5478 }
5479 }
5480
5481 #endif
5482
5483 /* Different values of OK tell what its OK to return. Things that
5484 aren't OK are an error (what a shock, no?)
5485
5486 0: Everything is OK
5487 10: Absolute 1:8 only
5488 20: Absolute 0:7 only
5489 30: absolute 0:15 only
5490 40: Absolute 0:31 only
5491 50: absolute 0:127 only
5492 55: absolute -64:63 only
5493 60: absolute -128:127 only
5494 65: absolute 0:511 only
5495 70: absolute 0:4095 only
5496 80: absolute -1, 1:7 only
5497 90: No bignums. */
5498
5499 static int
5500 get_num (struct m68k_exp *exp, int ok)
5501 {
5502 if (exp->exp.X_op == O_absent)
5503 {
5504 /* Do the same thing the VAX asm does. */
5505 op (exp) = O_constant;
5506 adds (exp) = 0;
5507 subs (exp) = 0;
5508 offs (exp) = 0;
5509 if (ok == 10)
5510 {
5511 as_warn (_("expression out of range: defaulting to 1"));
5512 offs (exp) = 1;
5513 }
5514 }
5515 else if (exp->exp.X_op == O_constant)
5516 {
5517 switch (ok)
5518 {
5519 case 10:
5520 if ((valueT) TRUNC (offs (exp)) - 1 > 7)
5521 {
5522 as_warn (_("expression out of range: defaulting to 1"));
5523 offs (exp) = 1;
5524 }
5525 break;
5526 case 20:
5527 if ((valueT) TRUNC (offs (exp)) > 7)
5528 goto outrange;
5529 break;
5530 case 30:
5531 if ((valueT) TRUNC (offs (exp)) > 15)
5532 goto outrange;
5533 break;
5534 case 40:
5535 if ((valueT) TRUNC (offs (exp)) > 32)
5536 goto outrange;
5537 break;
5538 case 50:
5539 if ((valueT) TRUNC (offs (exp)) > 127)
5540 goto outrange;
5541 break;
5542 case 55:
5543 if ((valueT) SEXT (offs (exp)) + 64 > 127)
5544 goto outrange;
5545 break;
5546 case 60:
5547 if ((valueT) SEXT (offs (exp)) + 128 > 255)
5548 goto outrange;
5549 break;
5550 case 65:
5551 if ((valueT) TRUNC (offs (exp)) > 511)
5552 goto outrange;
5553 break;
5554 case 70:
5555 if ((valueT) TRUNC (offs (exp)) > 4095)
5556 {
5557 outrange:
5558 as_warn (_("expression out of range: defaulting to 0"));
5559 offs (exp) = 0;
5560 }
5561 break;
5562 case 80:
5563 if ((valueT) TRUNC (offs (exp)) != 0xffffffff
5564 && (valueT) TRUNC (offs (exp)) - 1 > 6)
5565 {
5566 as_warn (_("expression out of range: defaulting to 1"));
5567 offs (exp) = 1;
5568 }
5569 break;
5570 default:
5571 break;
5572 }
5573 }
5574 else if (exp->exp.X_op == O_big)
5575 {
5576 if (offs (exp) <= 0 /* flonum. */
5577 && (ok == 90 /* no bignums */
5578 || (ok > 10 /* Small-int ranges including 0 ok. */
5579 /* If we have a flonum zero, a zero integer should
5580 do as well (e.g., in moveq). */
5581 && generic_floating_point_number.exponent == 0
5582 && generic_floating_point_number.low[0] == 0)))
5583 {
5584 /* HACK! Turn it into a long. */
5585 LITTLENUM_TYPE words[6];
5586
5587 gen_to_words (words, 2, 8L); /* These numbers are magic! */
5588 op (exp) = O_constant;
5589 adds (exp) = 0;
5590 subs (exp) = 0;
5591 offs (exp) = words[1] | (words[0] << 16);
5592 }
5593 else if (ok != 0)
5594 {
5595 op (exp) = O_constant;
5596 adds (exp) = 0;
5597 subs (exp) = 0;
5598 offs (exp) = (ok == 10) ? 1 : 0;
5599 as_warn (_("Can't deal with expression; defaulting to %ld"),
5600 (long) offs (exp));
5601 }
5602 }
5603 else
5604 {
5605 if (ok >= 10 && ok <= 80)
5606 {
5607 op (exp) = O_constant;
5608 adds (exp) = 0;
5609 subs (exp) = 0;
5610 offs (exp) = (ok == 10) ? 1 : 0;
5611 as_warn (_("Can't deal with expression; defaulting to %ld"),
5612 (long) offs (exp));
5613 }
5614 }
5615
5616 if (exp->size != SIZE_UNSPEC)
5617 {
5618 switch (exp->size)
5619 {
5620 case SIZE_UNSPEC:
5621 case SIZE_LONG:
5622 break;
5623 case SIZE_BYTE:
5624 if (!isbyte (offs (exp)))
5625 as_warn (_("expression doesn't fit in BYTE"));
5626 break;
5627 case SIZE_WORD:
5628 if (!isword (offs (exp)))
5629 as_warn (_("expression doesn't fit in WORD"));
5630 break;
5631 }
5632 }
5633
5634 return offs (exp);
5635 }
5636
5637 /* These are the back-ends for the various machine dependent pseudo-ops. */
5638
5639 static void
5640 s_data1 (int ignore ATTRIBUTE_UNUSED)
5641 {
5642 subseg_set (data_section, 1);
5643 demand_empty_rest_of_line ();
5644 }
5645
5646 static void
5647 s_data2 (int ignore ATTRIBUTE_UNUSED)
5648 {
5649 subseg_set (data_section, 2);
5650 demand_empty_rest_of_line ();
5651 }
5652
5653 static void
5654 s_bss (int ignore ATTRIBUTE_UNUSED)
5655 {
5656 /* We don't support putting frags in the BSS segment, we fake it
5657 by marking in_bss, then looking at s_skip for clues. */
5658
5659 subseg_set (bss_section, 0);
5660 demand_empty_rest_of_line ();
5661 }
5662
5663 static void
5664 s_even (int ignore ATTRIBUTE_UNUSED)
5665 {
5666 int temp;
5667 long temp_fill;
5668
5669 temp = 1; /* JF should be 2? */
5670 temp_fill = get_absolute_expression ();
5671 if (!need_pass_2) /* Never make frag if expect extra pass. */
5672 frag_align (temp, (int) temp_fill, 0);
5673 demand_empty_rest_of_line ();
5674 record_alignment (now_seg, temp);
5675 }
5676
5677 static void
5678 s_proc (int ignore ATTRIBUTE_UNUSED)
5679 {
5680 demand_empty_rest_of_line ();
5681 }
5682 \f
5683 /* Pseudo-ops handled for MRI compatibility. */
5684
5685 /* This function returns non-zero if the argument is a conditional
5686 pseudo-op. This is called when checking whether a pending
5687 alignment is needed. */
5688
5689 int
5690 m68k_conditional_pseudoop (pseudo_typeS *pop)
5691 {
5692 return (pop->poc_handler == s_mri_if
5693 || pop->poc_handler == s_mri_else);
5694 }
5695
5696 /* Handle an MRI style chip specification. */
5697
5698 static void
5699 mri_chip (void)
5700 {
5701 char *s;
5702 char c;
5703 int i;
5704
5705 s = input_line_pointer;
5706 /* We can't use get_symbol_end since the processor names are not proper
5707 symbols. */
5708 while (is_part_of_name (c = *input_line_pointer++))
5709 ;
5710 *--input_line_pointer = 0;
5711 for (i = 0; m68k_cpus[i].name; i++)
5712 if (strcasecmp (s, m68k_cpus[i].name) == 0)
5713 break;
5714 if (!m68k_cpus[i].name)
5715 {
5716 as_bad (_("%s: unrecognized processor name"), s);
5717 *input_line_pointer = c;
5718 ignore_rest_of_line ();
5719 return;
5720 }
5721 *input_line_pointer = c;
5722
5723 if (*input_line_pointer == '/')
5724 current_architecture = 0;
5725 else
5726 current_architecture &= m68881 | m68851;
5727 current_architecture |= m68k_cpus[i].arch & ~(m68881 | m68851);
5728 control_regs = m68k_cpus[i].control_regs;
5729
5730 while (*input_line_pointer == '/')
5731 {
5732 ++input_line_pointer;
5733 s = input_line_pointer;
5734 /* We can't use get_symbol_end since the processor names are not
5735 proper symbols. */
5736 while (is_part_of_name (c = *input_line_pointer++))
5737 ;
5738 *--input_line_pointer = 0;
5739 if (strcmp (s, "68881") == 0)
5740 current_architecture |= m68881;
5741 else if (strcmp (s, "68851") == 0)
5742 current_architecture |= m68851;
5743 *input_line_pointer = c;
5744 }
5745 }
5746
5747 /* The MRI CHIP pseudo-op. */
5748
5749 static void
5750 s_chip (int ignore ATTRIBUTE_UNUSED)
5751 {
5752 char *stop = NULL;
5753 char stopc;
5754
5755 if (flag_mri)
5756 stop = mri_comment_field (&stopc);
5757 mri_chip ();
5758 if (flag_mri)
5759 mri_comment_end (stop, stopc);
5760 demand_empty_rest_of_line ();
5761 }
5762
5763 /* The MRI FOPT pseudo-op. */
5764
5765 static void
5766 s_fopt (int ignore ATTRIBUTE_UNUSED)
5767 {
5768 SKIP_WHITESPACE ();
5769
5770 if (strncasecmp (input_line_pointer, "ID=", 3) == 0)
5771 {
5772 int temp;
5773
5774 input_line_pointer += 3;
5775 temp = get_absolute_expression ();
5776 if (temp < 0 || temp > 7)
5777 as_bad (_("bad coprocessor id"));
5778 else
5779 m68k_float_copnum = COP0 + temp;
5780 }
5781 else
5782 {
5783 as_bad (_("unrecognized fopt option"));
5784 ignore_rest_of_line ();
5785 return;
5786 }
5787
5788 demand_empty_rest_of_line ();
5789 }
5790
5791 /* The structure used to handle the MRI OPT pseudo-op. */
5792
5793 struct opt_action
5794 {
5795 /* The name of the option. */
5796 const char *name;
5797
5798 /* If this is not NULL, just call this function. The first argument
5799 is the ARG field of this structure, the second argument is
5800 whether the option was negated. */
5801 void (*pfn) (int arg, int on);
5802
5803 /* If this is not NULL, and the PFN field is NULL, set the variable
5804 this points to. Set it to the ARG field if the option was not
5805 negated, and the NOTARG field otherwise. */
5806 int *pvar;
5807
5808 /* The value to pass to PFN or to assign to *PVAR. */
5809 int arg;
5810
5811 /* The value to assign to *PVAR if the option is negated. If PFN is
5812 NULL, and PVAR is not NULL, and ARG and NOTARG are the same, then
5813 the option may not be negated. */
5814 int notarg;
5815 };
5816
5817 /* The table used to handle the MRI OPT pseudo-op. */
5818
5819 static void skip_to_comma (int, int);
5820 static void opt_nest (int, int);
5821 static void opt_chip (int, int);
5822 static void opt_list (int, int);
5823 static void opt_list_symbols (int, int);
5824
5825 static const struct opt_action opt_table[] =
5826 {
5827 { "abspcadd", 0, &m68k_abspcadd, 1, 0 },
5828
5829 /* We do relaxing, so there is little use for these options. */
5830 { "b", 0, 0, 0, 0 },
5831 { "brs", 0, 0, 0, 0 },
5832 { "brb", 0, 0, 0, 0 },
5833 { "brl", 0, 0, 0, 0 },
5834 { "brw", 0, 0, 0, 0 },
5835
5836 { "c", 0, 0, 0, 0 },
5837 { "cex", 0, 0, 0, 0 },
5838 { "case", 0, &symbols_case_sensitive, 1, 0 },
5839 { "cl", 0, 0, 0, 0 },
5840 { "cre", 0, 0, 0, 0 },
5841 { "d", 0, &flag_keep_locals, 1, 0 },
5842 { "e", 0, 0, 0, 0 },
5843 { "f", 0, &flag_short_refs, 1, 0 },
5844 { "frs", 0, &flag_short_refs, 1, 0 },
5845 { "frl", 0, &flag_short_refs, 0, 1 },
5846 { "g", 0, 0, 0, 0 },
5847 { "i", 0, 0, 0, 0 },
5848 { "m", 0, 0, 0, 0 },
5849 { "mex", 0, 0, 0, 0 },
5850 { "mc", 0, 0, 0, 0 },
5851 { "md", 0, 0, 0, 0 },
5852 { "nest", opt_nest, 0, 0, 0 },
5853 { "next", skip_to_comma, 0, 0, 0 },
5854 { "o", 0, 0, 0, 0 },
5855 { "old", 0, 0, 0, 0 },
5856 { "op", skip_to_comma, 0, 0, 0 },
5857 { "pco", 0, 0, 0, 0 },
5858 { "p", opt_chip, 0, 0, 0 },
5859 { "pcr", 0, 0, 0, 0 },
5860 { "pcs", 0, 0, 0, 0 },
5861 { "r", 0, 0, 0, 0 },
5862 { "quick", 0, &m68k_quick, 1, 0 },
5863 { "rel32", 0, &m68k_rel32, 1, 0 },
5864 { "s", opt_list, 0, 0, 0 },
5865 { "t", opt_list_symbols, 0, 0, 0 },
5866 { "w", 0, &flag_no_warnings, 0, 1 },
5867 { "x", 0, 0, 0, 0 }
5868 };
5869
5870 #define OPTCOUNT ((int) (sizeof opt_table / sizeof opt_table[0]))
5871
5872 /* The MRI OPT pseudo-op. */
5873
5874 static void
5875 s_opt (int ignore ATTRIBUTE_UNUSED)
5876 {
5877 do
5878 {
5879 int t;
5880 char *s;
5881 char c;
5882 int i;
5883 const struct opt_action *o;
5884
5885 SKIP_WHITESPACE ();
5886
5887 t = 1;
5888 if (*input_line_pointer == '-')
5889 {
5890 ++input_line_pointer;
5891 t = 0;
5892 }
5893 else if (strncasecmp (input_line_pointer, "NO", 2) == 0)
5894 {
5895 input_line_pointer += 2;
5896 t = 0;
5897 }
5898
5899 s = input_line_pointer;
5900 c = get_symbol_end ();
5901
5902 for (i = 0, o = opt_table; i < OPTCOUNT; i++, o++)
5903 {
5904 if (strcasecmp (s, o->name) == 0)
5905 {
5906 if (o->pfn)
5907 {
5908 /* Restore input_line_pointer now in case the option
5909 takes arguments. */
5910 *input_line_pointer = c;
5911 (*o->pfn) (o->arg, t);
5912 }
5913 else if (o->pvar != NULL)
5914 {
5915 if (! t && o->arg == o->notarg)
5916 as_bad (_("option `%s' may not be negated"), s);
5917 *input_line_pointer = c;
5918 *o->pvar = t ? o->arg : o->notarg;
5919 }
5920 else
5921 *input_line_pointer = c;
5922 break;
5923 }
5924 }
5925 if (i >= OPTCOUNT)
5926 {
5927 as_bad (_("option `%s' not recognized"), s);
5928 *input_line_pointer = c;
5929 }
5930 }
5931 while (*input_line_pointer++ == ',');
5932
5933 /* Move back to terminating character. */
5934 --input_line_pointer;
5935 demand_empty_rest_of_line ();
5936 }
5937
5938 /* Skip ahead to a comma. This is used for OPT options which we do
5939 not support and which take arguments. */
5940
5941 static void
5942 skip_to_comma (int arg ATTRIBUTE_UNUSED, int on ATTRIBUTE_UNUSED)
5943 {
5944 while (*input_line_pointer != ','
5945 && ! is_end_of_line[(unsigned char) *input_line_pointer])
5946 ++input_line_pointer;
5947 }
5948
5949 /* Handle the OPT NEST=depth option. */
5950
5951 static void
5952 opt_nest (int arg ATTRIBUTE_UNUSED, int on ATTRIBUTE_UNUSED)
5953 {
5954 if (*input_line_pointer != '=')
5955 {
5956 as_bad (_("bad format of OPT NEST=depth"));
5957 return;
5958 }
5959
5960 ++input_line_pointer;
5961 max_macro_nest = get_absolute_expression ();
5962 }
5963
5964 /* Handle the OPT P=chip option. */
5965
5966 static void
5967 opt_chip (int arg ATTRIBUTE_UNUSED, int on ATTRIBUTE_UNUSED)
5968 {
5969 if (*input_line_pointer != '=')
5970 {
5971 /* This is just OPT P, which we do not support. */
5972 return;
5973 }
5974
5975 ++input_line_pointer;
5976 mri_chip ();
5977 }
5978
5979 /* Handle the OPT S option. */
5980
5981 static void
5982 opt_list (int arg ATTRIBUTE_UNUSED, int on)
5983 {
5984 listing_list (on);
5985 }
5986
5987 /* Handle the OPT T option. */
5988
5989 static void
5990 opt_list_symbols (int arg ATTRIBUTE_UNUSED, int on)
5991 {
5992 if (on)
5993 listing |= LISTING_SYMBOLS;
5994 else
5995 listing &= ~LISTING_SYMBOLS;
5996 }
5997
5998 /* Handle the MRI REG pseudo-op. */
5999
6000 static void
6001 s_reg (int ignore ATTRIBUTE_UNUSED)
6002 {
6003 char *s;
6004 int c;
6005 struct m68k_op rop;
6006 int mask;
6007 char *stop = NULL;
6008 char stopc;
6009
6010 if (line_label == NULL)
6011 {
6012 as_bad (_("missing label"));
6013 ignore_rest_of_line ();
6014 return;
6015 }
6016
6017 if (flag_mri)
6018 stop = mri_comment_field (&stopc);
6019
6020 SKIP_WHITESPACE ();
6021
6022 s = input_line_pointer;
6023 while (ISALNUM (*input_line_pointer)
6024 #ifdef REGISTER_PREFIX
6025 || *input_line_pointer == REGISTER_PREFIX
6026 #endif
6027 || *input_line_pointer == '/'
6028 || *input_line_pointer == '-')
6029 ++input_line_pointer;
6030 c = *input_line_pointer;
6031 *input_line_pointer = '\0';
6032
6033 if (m68k_ip_op (s, &rop) != 0)
6034 {
6035 if (rop.error == NULL)
6036 as_bad (_("bad register list"));
6037 else
6038 as_bad (_("bad register list: %s"), rop.error);
6039 *input_line_pointer = c;
6040 ignore_rest_of_line ();
6041 return;
6042 }
6043
6044 *input_line_pointer = c;
6045
6046 if (rop.mode == REGLST)
6047 mask = rop.mask;
6048 else if (rop.mode == DREG)
6049 mask = 1 << (rop.reg - DATA0);
6050 else if (rop.mode == AREG)
6051 mask = 1 << (rop.reg - ADDR0 + 8);
6052 else if (rop.mode == FPREG)
6053 mask = 1 << (rop.reg - FP0 + 16);
6054 else if (rop.mode == CONTROL
6055 && rop.reg == FPI)
6056 mask = 1 << 24;
6057 else if (rop.mode == CONTROL
6058 && rop.reg == FPS)
6059 mask = 1 << 25;
6060 else if (rop.mode == CONTROL
6061 && rop.reg == FPC)
6062 mask = 1 << 26;
6063 else
6064 {
6065 as_bad (_("bad register list"));
6066 ignore_rest_of_line ();
6067 return;
6068 }
6069
6070 S_SET_SEGMENT (line_label, reg_section);
6071 S_SET_VALUE (line_label, ~mask);
6072 symbol_set_frag (line_label, &zero_address_frag);
6073
6074 if (flag_mri)
6075 mri_comment_end (stop, stopc);
6076
6077 demand_empty_rest_of_line ();
6078 }
6079
6080 /* This structure is used for the MRI SAVE and RESTORE pseudo-ops. */
6081
6082 struct save_opts
6083 {
6084 struct save_opts *next;
6085 int abspcadd;
6086 int symbols_case_sensitive;
6087 int keep_locals;
6088 int short_refs;
6089 int architecture;
6090 const enum m68k_register *control_regs;
6091 int quick;
6092 int rel32;
6093 int listing;
6094 int no_warnings;
6095 /* FIXME: We don't save OPT S. */
6096 };
6097
6098 /* This variable holds the stack of saved options. */
6099
6100 static struct save_opts *save_stack;
6101
6102 /* The MRI SAVE pseudo-op. */
6103
6104 static void
6105 s_save (int ignore ATTRIBUTE_UNUSED)
6106 {
6107 struct save_opts *s;
6108
6109 s = (struct save_opts *) xmalloc (sizeof (struct save_opts));
6110 s->abspcadd = m68k_abspcadd;
6111 s->symbols_case_sensitive = symbols_case_sensitive;
6112 s->keep_locals = flag_keep_locals;
6113 s->short_refs = flag_short_refs;
6114 s->architecture = current_architecture;
6115 s->control_regs = control_regs;
6116 s->quick = m68k_quick;
6117 s->rel32 = m68k_rel32;
6118 s->listing = listing;
6119 s->no_warnings = flag_no_warnings;
6120
6121 s->next = save_stack;
6122 save_stack = s;
6123
6124 demand_empty_rest_of_line ();
6125 }
6126
6127 /* The MRI RESTORE pseudo-op. */
6128
6129 static void
6130 s_restore (int ignore ATTRIBUTE_UNUSED)
6131 {
6132 struct save_opts *s;
6133
6134 if (save_stack == NULL)
6135 {
6136 as_bad (_("restore without save"));
6137 ignore_rest_of_line ();
6138 return;
6139 }
6140
6141 s = save_stack;
6142 save_stack = s->next;
6143
6144 m68k_abspcadd = s->abspcadd;
6145 symbols_case_sensitive = s->symbols_case_sensitive;
6146 flag_keep_locals = s->keep_locals;
6147 flag_short_refs = s->short_refs;
6148 current_architecture = s->architecture;
6149 control_regs = s->control_regs;
6150 m68k_quick = s->quick;
6151 m68k_rel32 = s->rel32;
6152 listing = s->listing;
6153 flag_no_warnings = s->no_warnings;
6154
6155 free (s);
6156
6157 demand_empty_rest_of_line ();
6158 }
6159
6160 /* Types of MRI structured control directives. */
6161
6162 enum mri_control_type
6163 {
6164 mri_for,
6165 mri_if,
6166 mri_repeat,
6167 mri_while
6168 };
6169
6170 /* This structure is used to stack the MRI structured control
6171 directives. */
6172
6173 struct mri_control_info
6174 {
6175 /* The directive within which this one is enclosed. */
6176 struct mri_control_info *outer;
6177
6178 /* The type of directive. */
6179 enum mri_control_type type;
6180
6181 /* Whether an ELSE has been in an IF. */
6182 int else_seen;
6183
6184 /* The add or sub statement at the end of a FOR. */
6185 char *incr;
6186
6187 /* The label of the top of a FOR or REPEAT loop. */
6188 char *top;
6189
6190 /* The label to jump to for the next iteration, or the else
6191 expression of a conditional. */
6192 char *next;
6193
6194 /* The label to jump to to break out of the loop, or the label past
6195 the end of a conditional. */
6196 char *bottom;
6197 };
6198
6199 /* The stack of MRI structured control directives. */
6200
6201 static struct mri_control_info *mri_control_stack;
6202
6203 /* The current MRI structured control directive index number, used to
6204 generate label names. */
6205
6206 static int mri_control_index;
6207
6208 /* Assemble an instruction for an MRI structured control directive. */
6209
6210 static void
6211 mri_assemble (char *str)
6212 {
6213 char *s;
6214
6215 /* md_assemble expects the opcode to be in lower case. */
6216 for (s = str; *s != ' ' && *s != '\0'; s++)
6217 *s = TOLOWER (*s);
6218
6219 md_assemble (str);
6220 }
6221
6222 /* Generate a new MRI label structured control directive label name. */
6223
6224 static char *
6225 mri_control_label (void)
6226 {
6227 char *n;
6228
6229 n = (char *) xmalloc (20);
6230 sprintf (n, "%smc%d", FAKE_LABEL_NAME, mri_control_index);
6231 ++mri_control_index;
6232 return n;
6233 }
6234
6235 /* Create a new MRI structured control directive. */
6236
6237 static struct mri_control_info *
6238 push_mri_control (enum mri_control_type type)
6239 {
6240 struct mri_control_info *n;
6241
6242 n = (struct mri_control_info *) xmalloc (sizeof (struct mri_control_info));
6243
6244 n->type = type;
6245 n->else_seen = 0;
6246 if (type == mri_if || type == mri_while)
6247 n->top = NULL;
6248 else
6249 n->top = mri_control_label ();
6250 n->next = mri_control_label ();
6251 n->bottom = mri_control_label ();
6252
6253 n->outer = mri_control_stack;
6254 mri_control_stack = n;
6255
6256 return n;
6257 }
6258
6259 /* Pop off the stack of MRI structured control directives. */
6260
6261 static void
6262 pop_mri_control (void)
6263 {
6264 struct mri_control_info *n;
6265
6266 n = mri_control_stack;
6267 mri_control_stack = n->outer;
6268 if (n->top != NULL)
6269 free (n->top);
6270 free (n->next);
6271 free (n->bottom);
6272 free (n);
6273 }
6274
6275 /* Recognize a condition code in an MRI structured control expression. */
6276
6277 static int
6278 parse_mri_condition (int *pcc)
6279 {
6280 char c1, c2;
6281
6282 know (*input_line_pointer == '<');
6283
6284 ++input_line_pointer;
6285 c1 = *input_line_pointer++;
6286 c2 = *input_line_pointer++;
6287
6288 if (*input_line_pointer != '>')
6289 {
6290 as_bad (_("syntax error in structured control directive"));
6291 return 0;
6292 }
6293
6294 ++input_line_pointer;
6295 SKIP_WHITESPACE ();
6296
6297 c1 = TOLOWER (c1);
6298 c2 = TOLOWER (c2);
6299
6300 *pcc = (c1 << 8) | c2;
6301
6302 return 1;
6303 }
6304
6305 /* Parse a single operand in an MRI structured control expression. */
6306
6307 static int
6308 parse_mri_control_operand (int *pcc, char **leftstart, char **leftstop,
6309 char **rightstart, char **rightstop)
6310 {
6311 char *s;
6312
6313 SKIP_WHITESPACE ();
6314
6315 *pcc = -1;
6316 *leftstart = NULL;
6317 *leftstop = NULL;
6318 *rightstart = NULL;
6319 *rightstop = NULL;
6320
6321 if (*input_line_pointer == '<')
6322 {
6323 /* It's just a condition code. */
6324 return parse_mri_condition (pcc);
6325 }
6326
6327 /* Look ahead for the condition code. */
6328 for (s = input_line_pointer; *s != '\0'; ++s)
6329 {
6330 if (*s == '<' && s[1] != '\0' && s[2] != '\0' && s[3] == '>')
6331 break;
6332 }
6333 if (*s == '\0')
6334 {
6335 as_bad (_("missing condition code in structured control directive"));
6336 return 0;
6337 }
6338
6339 *leftstart = input_line_pointer;
6340 *leftstop = s;
6341 if (*leftstop > *leftstart
6342 && ((*leftstop)[-1] == ' ' || (*leftstop)[-1] == '\t'))
6343 --*leftstop;
6344
6345 input_line_pointer = s;
6346 if (! parse_mri_condition (pcc))
6347 return 0;
6348
6349 /* Look ahead for AND or OR or end of line. */
6350 for (s = input_line_pointer; *s != '\0'; ++s)
6351 {
6352 /* We must make sure we don't misinterpret AND/OR at the end of labels!
6353 if d0 <eq> #FOOAND and d1 <ne> #BAROR then
6354 ^^^ ^^ */
6355 if ((s == input_line_pointer
6356 || *(s-1) == ' '
6357 || *(s-1) == '\t')
6358 && ((strncasecmp (s, "AND", 3) == 0
6359 && (s[3] == '.' || ! is_part_of_name (s[3])))
6360 || (strncasecmp (s, "OR", 2) == 0
6361 && (s[2] == '.' || ! is_part_of_name (s[2])))))
6362 break;
6363 }
6364
6365 *rightstart = input_line_pointer;
6366 *rightstop = s;
6367 if (*rightstop > *rightstart
6368 && ((*rightstop)[-1] == ' ' || (*rightstop)[-1] == '\t'))
6369 --*rightstop;
6370
6371 input_line_pointer = s;
6372
6373 return 1;
6374 }
6375
6376 #define MCC(b1, b2) (((b1) << 8) | (b2))
6377
6378 /* Swap the sense of a condition. This changes the condition so that
6379 it generates the same result when the operands are swapped. */
6380
6381 static int
6382 swap_mri_condition (int cc)
6383 {
6384 switch (cc)
6385 {
6386 case MCC ('h', 'i'): return MCC ('c', 's');
6387 case MCC ('l', 's'): return MCC ('c', 'c');
6388 /* <HS> is an alias for <CC>. */
6389 case MCC ('h', 's'):
6390 case MCC ('c', 'c'): return MCC ('l', 's');
6391 /* <LO> is an alias for <CS>. */
6392 case MCC ('l', 'o'):
6393 case MCC ('c', 's'): return MCC ('h', 'i');
6394 case MCC ('p', 'l'): return MCC ('m', 'i');
6395 case MCC ('m', 'i'): return MCC ('p', 'l');
6396 case MCC ('g', 'e'): return MCC ('l', 'e');
6397 case MCC ('l', 't'): return MCC ('g', 't');
6398 case MCC ('g', 't'): return MCC ('l', 't');
6399 case MCC ('l', 'e'): return MCC ('g', 'e');
6400 /* Issue a warning for conditions we can not swap. */
6401 case MCC ('n', 'e'): return MCC ('n', 'e'); /* no problem here */
6402 case MCC ('e', 'q'): return MCC ('e', 'q'); /* also no problem */
6403 case MCC ('v', 'c'):
6404 case MCC ('v', 's'):
6405 default :
6406 as_warn (_("Condition <%c%c> in structured control directive can not be encoded correctly"),
6407 (char) (cc >> 8), (char) (cc));
6408 break;
6409 }
6410 return cc;
6411 }
6412
6413 /* Reverse the sense of a condition. */
6414
6415 static int
6416 reverse_mri_condition (int cc)
6417 {
6418 switch (cc)
6419 {
6420 case MCC ('h', 'i'): return MCC ('l', 's');
6421 case MCC ('l', 's'): return MCC ('h', 'i');
6422 /* <HS> is an alias for <CC> */
6423 case MCC ('h', 's'): return MCC ('l', 'o');
6424 case MCC ('c', 'c'): return MCC ('c', 's');
6425 /* <LO> is an alias for <CS> */
6426 case MCC ('l', 'o'): return MCC ('h', 's');
6427 case MCC ('c', 's'): return MCC ('c', 'c');
6428 case MCC ('n', 'e'): return MCC ('e', 'q');
6429 case MCC ('e', 'q'): return MCC ('n', 'e');
6430 case MCC ('v', 'c'): return MCC ('v', 's');
6431 case MCC ('v', 's'): return MCC ('v', 'c');
6432 case MCC ('p', 'l'): return MCC ('m', 'i');
6433 case MCC ('m', 'i'): return MCC ('p', 'l');
6434 case MCC ('g', 'e'): return MCC ('l', 't');
6435 case MCC ('l', 't'): return MCC ('g', 'e');
6436 case MCC ('g', 't'): return MCC ('l', 'e');
6437 case MCC ('l', 'e'): return MCC ('g', 't');
6438 }
6439 return cc;
6440 }
6441
6442 /* Build an MRI structured control expression. This generates test
6443 and branch instructions. It goes to TRUELAB if the condition is
6444 true, and to FALSELAB if the condition is false. Exactly one of
6445 TRUELAB and FALSELAB will be NULL, meaning to fall through. QUAL
6446 is the size qualifier for the expression. EXTENT is the size to
6447 use for the branch. */
6448
6449 static void
6450 build_mri_control_operand (int qual, int cc, char *leftstart, char *leftstop,
6451 char *rightstart, char *rightstop,
6452 const char *truelab, const char *falselab,
6453 int extent)
6454 {
6455 char *buf;
6456 char *s;
6457
6458 if (leftstart != NULL)
6459 {
6460 struct m68k_op leftop, rightop;
6461 char c;
6462
6463 /* Swap the compare operands, if necessary, to produce a legal
6464 m68k compare instruction. Comparing a register operand with
6465 a non-register operand requires the register to be on the
6466 right (cmp, cmpa). Comparing an immediate value with
6467 anything requires the immediate value to be on the left
6468 (cmpi). */
6469
6470 c = *leftstop;
6471 *leftstop = '\0';
6472 (void) m68k_ip_op (leftstart, &leftop);
6473 *leftstop = c;
6474
6475 c = *rightstop;
6476 *rightstop = '\0';
6477 (void) m68k_ip_op (rightstart, &rightop);
6478 *rightstop = c;
6479
6480 if (rightop.mode == IMMED
6481 || ((leftop.mode == DREG || leftop.mode == AREG)
6482 && (rightop.mode != DREG && rightop.mode != AREG)))
6483 {
6484 char *temp;
6485
6486 /* Correct conditional handling:
6487 if #1 <lt> d0 then ;means if (1 < d0)
6488 ...
6489 endi
6490
6491 should assemble to:
6492
6493 cmp #1,d0 if we do *not* swap the operands
6494 bgt true we need the swapped condition!
6495 ble false
6496 true:
6497 ...
6498 false:
6499 */
6500 temp = leftstart;
6501 leftstart = rightstart;
6502 rightstart = temp;
6503 temp = leftstop;
6504 leftstop = rightstop;
6505 rightstop = temp;
6506 }
6507 else
6508 {
6509 cc = swap_mri_condition (cc);
6510 }
6511 }
6512
6513 if (truelab == NULL)
6514 {
6515 cc = reverse_mri_condition (cc);
6516 truelab = falselab;
6517 }
6518
6519 if (leftstart != NULL)
6520 {
6521 buf = (char *) xmalloc (20
6522 + (leftstop - leftstart)
6523 + (rightstop - rightstart));
6524 s = buf;
6525 *s++ = 'c';
6526 *s++ = 'm';
6527 *s++ = 'p';
6528 if (qual != '\0')
6529 *s++ = TOLOWER (qual);
6530 *s++ = ' ';
6531 memcpy (s, leftstart, leftstop - leftstart);
6532 s += leftstop - leftstart;
6533 *s++ = ',';
6534 memcpy (s, rightstart, rightstop - rightstart);
6535 s += rightstop - rightstart;
6536 *s = '\0';
6537 mri_assemble (buf);
6538 free (buf);
6539 }
6540
6541 buf = (char *) xmalloc (20 + strlen (truelab));
6542 s = buf;
6543 *s++ = 'b';
6544 *s++ = cc >> 8;
6545 *s++ = cc & 0xff;
6546 if (extent != '\0')
6547 *s++ = TOLOWER (extent);
6548 *s++ = ' ';
6549 strcpy (s, truelab);
6550 mri_assemble (buf);
6551 free (buf);
6552 }
6553
6554 /* Parse an MRI structured control expression. This generates test
6555 and branch instructions. STOP is where the expression ends. It
6556 goes to TRUELAB if the condition is true, and to FALSELAB if the
6557 condition is false. Exactly one of TRUELAB and FALSELAB will be
6558 NULL, meaning to fall through. QUAL is the size qualifier for the
6559 expression. EXTENT is the size to use for the branch. */
6560
6561 static void
6562 parse_mri_control_expression (char *stop, int qual, const char *truelab,
6563 const char *falselab, int extent)
6564 {
6565 int c;
6566 int cc;
6567 char *leftstart;
6568 char *leftstop;
6569 char *rightstart;
6570 char *rightstop;
6571
6572 c = *stop;
6573 *stop = '\0';
6574
6575 if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
6576 &rightstart, &rightstop))
6577 {
6578 *stop = c;
6579 return;
6580 }
6581
6582 if (strncasecmp (input_line_pointer, "AND", 3) == 0)
6583 {
6584 const char *flab;
6585
6586 if (falselab != NULL)
6587 flab = falselab;
6588 else
6589 flab = mri_control_label ();
6590
6591 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6592 rightstop, (const char *) NULL, flab, extent);
6593
6594 input_line_pointer += 3;
6595 if (*input_line_pointer != '.'
6596 || input_line_pointer[1] == '\0')
6597 qual = '\0';
6598 else
6599 {
6600 qual = input_line_pointer[1];
6601 input_line_pointer += 2;
6602 }
6603
6604 if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
6605 &rightstart, &rightstop))
6606 {
6607 *stop = c;
6608 return;
6609 }
6610
6611 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6612 rightstop, truelab, falselab, extent);
6613
6614 if (falselab == NULL)
6615 colon (flab);
6616 }
6617 else if (strncasecmp (input_line_pointer, "OR", 2) == 0)
6618 {
6619 const char *tlab;
6620
6621 if (truelab != NULL)
6622 tlab = truelab;
6623 else
6624 tlab = mri_control_label ();
6625
6626 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6627 rightstop, tlab, (const char *) NULL, extent);
6628
6629 input_line_pointer += 2;
6630 if (*input_line_pointer != '.'
6631 || input_line_pointer[1] == '\0')
6632 qual = '\0';
6633 else
6634 {
6635 qual = input_line_pointer[1];
6636 input_line_pointer += 2;
6637 }
6638
6639 if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
6640 &rightstart, &rightstop))
6641 {
6642 *stop = c;
6643 return;
6644 }
6645
6646 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6647 rightstop, truelab, falselab, extent);
6648
6649 if (truelab == NULL)
6650 colon (tlab);
6651 }
6652 else
6653 {
6654 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6655 rightstop, truelab, falselab, extent);
6656 }
6657
6658 *stop = c;
6659 if (input_line_pointer != stop)
6660 as_bad (_("syntax error in structured control directive"));
6661 }
6662
6663 /* Handle the MRI IF pseudo-op. This may be a structured control
6664 directive, or it may be a regular assembler conditional, depending
6665 on its operands. */
6666
6667 static void
6668 s_mri_if (int qual)
6669 {
6670 char *s;
6671 int c;
6672 struct mri_control_info *n;
6673
6674 /* A structured control directive must end with THEN with an
6675 optional qualifier. */
6676 s = input_line_pointer;
6677 /* We only accept '*' as introduction of comments if preceded by white space
6678 or at first column of a line (I think this can't actually happen here?)
6679 This is important when assembling:
6680 if d0 <ne> 12(a0,d0*2) then
6681 if d0 <ne> #CONST*20 then. */
6682 while (! (is_end_of_line[(unsigned char) *s]
6683 || (flag_mri
6684 && *s == '*'
6685 && (s == input_line_pointer
6686 || *(s-1) == ' '
6687 || *(s-1) == '\t'))))
6688 ++s;
6689 --s;
6690 while (s > input_line_pointer && (*s == ' ' || *s == '\t'))
6691 --s;
6692
6693 if (s - input_line_pointer > 1
6694 && s[-1] == '.')
6695 s -= 2;
6696
6697 if (s - input_line_pointer < 3
6698 || strncasecmp (s - 3, "THEN", 4) != 0)
6699 {
6700 if (qual != '\0')
6701 {
6702 as_bad (_("missing then"));
6703 ignore_rest_of_line ();
6704 return;
6705 }
6706
6707 /* It's a conditional. */
6708 s_if (O_ne);
6709 return;
6710 }
6711
6712 /* Since this might be a conditional if, this pseudo-op will be
6713 called even if we are supported to be ignoring input. Double
6714 check now. Clobber *input_line_pointer so that ignore_input
6715 thinks that this is not a special pseudo-op. */
6716 c = *input_line_pointer;
6717 *input_line_pointer = 0;
6718 if (ignore_input ())
6719 {
6720 *input_line_pointer = c;
6721 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6722 ++input_line_pointer;
6723 demand_empty_rest_of_line ();
6724 return;
6725 }
6726 *input_line_pointer = c;
6727
6728 n = push_mri_control (mri_if);
6729
6730 parse_mri_control_expression (s - 3, qual, (const char *) NULL,
6731 n->next, s[1] == '.' ? s[2] : '\0');
6732
6733 if (s[1] == '.')
6734 input_line_pointer = s + 3;
6735 else
6736 input_line_pointer = s + 1;
6737
6738 if (flag_mri)
6739 {
6740 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6741 ++input_line_pointer;
6742 }
6743
6744 demand_empty_rest_of_line ();
6745 }
6746
6747 /* Handle the MRI else pseudo-op. If we are currently doing an MRI
6748 structured IF, associate the ELSE with the IF. Otherwise, assume
6749 it is a conditional else. */
6750
6751 static void
6752 s_mri_else (int qual)
6753 {
6754 int c;
6755 char *buf;
6756 char q[2];
6757
6758 if (qual == '\0'
6759 && (mri_control_stack == NULL
6760 || mri_control_stack->type != mri_if
6761 || mri_control_stack->else_seen))
6762 {
6763 s_else (0);
6764 return;
6765 }
6766
6767 c = *input_line_pointer;
6768 *input_line_pointer = 0;
6769 if (ignore_input ())
6770 {
6771 *input_line_pointer = c;
6772 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6773 ++input_line_pointer;
6774 demand_empty_rest_of_line ();
6775 return;
6776 }
6777 *input_line_pointer = c;
6778
6779 if (mri_control_stack == NULL
6780 || mri_control_stack->type != mri_if
6781 || mri_control_stack->else_seen)
6782 {
6783 as_bad (_("else without matching if"));
6784 ignore_rest_of_line ();
6785 return;
6786 }
6787
6788 mri_control_stack->else_seen = 1;
6789
6790 buf = (char *) xmalloc (20 + strlen (mri_control_stack->bottom));
6791 q[0] = TOLOWER (qual);
6792 q[1] = '\0';
6793 sprintf (buf, "bra%s %s", q, mri_control_stack->bottom);
6794 mri_assemble (buf);
6795 free (buf);
6796
6797 colon (mri_control_stack->next);
6798
6799 if (flag_mri)
6800 {
6801 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6802 ++input_line_pointer;
6803 }
6804
6805 demand_empty_rest_of_line ();
6806 }
6807
6808 /* Handle the MRI ENDI pseudo-op. */
6809
6810 static void
6811 s_mri_endi (int ignore ATTRIBUTE_UNUSED)
6812 {
6813 if (mri_control_stack == NULL
6814 || mri_control_stack->type != mri_if)
6815 {
6816 as_bad (_("endi without matching if"));
6817 ignore_rest_of_line ();
6818 return;
6819 }
6820
6821 /* ignore_input will not return true for ENDI, so we don't need to
6822 worry about checking it again here. */
6823
6824 if (! mri_control_stack->else_seen)
6825 colon (mri_control_stack->next);
6826 colon (mri_control_stack->bottom);
6827
6828 pop_mri_control ();
6829
6830 if (flag_mri)
6831 {
6832 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6833 ++input_line_pointer;
6834 }
6835
6836 demand_empty_rest_of_line ();
6837 }
6838
6839 /* Handle the MRI BREAK pseudo-op. */
6840
6841 static void
6842 s_mri_break (int extent)
6843 {
6844 struct mri_control_info *n;
6845 char *buf;
6846 char ex[2];
6847
6848 n = mri_control_stack;
6849 while (n != NULL
6850 && n->type != mri_for
6851 && n->type != mri_repeat
6852 && n->type != mri_while)
6853 n = n->outer;
6854 if (n == NULL)
6855 {
6856 as_bad (_("break outside of structured loop"));
6857 ignore_rest_of_line ();
6858 return;
6859 }
6860
6861 buf = (char *) xmalloc (20 + strlen (n->bottom));
6862 ex[0] = TOLOWER (extent);
6863 ex[1] = '\0';
6864 sprintf (buf, "bra%s %s", ex, n->bottom);
6865 mri_assemble (buf);
6866 free (buf);
6867
6868 if (flag_mri)
6869 {
6870 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6871 ++input_line_pointer;
6872 }
6873
6874 demand_empty_rest_of_line ();
6875 }
6876
6877 /* Handle the MRI NEXT pseudo-op. */
6878
6879 static void
6880 s_mri_next (int extent)
6881 {
6882 struct mri_control_info *n;
6883 char *buf;
6884 char ex[2];
6885
6886 n = mri_control_stack;
6887 while (n != NULL
6888 && n->type != mri_for
6889 && n->type != mri_repeat
6890 && n->type != mri_while)
6891 n = n->outer;
6892 if (n == NULL)
6893 {
6894 as_bad (_("next outside of structured loop"));
6895 ignore_rest_of_line ();
6896 return;
6897 }
6898
6899 buf = (char *) xmalloc (20 + strlen (n->next));
6900 ex[0] = TOLOWER (extent);
6901 ex[1] = '\0';
6902 sprintf (buf, "bra%s %s", ex, n->next);
6903 mri_assemble (buf);
6904 free (buf);
6905
6906 if (flag_mri)
6907 {
6908 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6909 ++input_line_pointer;
6910 }
6911
6912 demand_empty_rest_of_line ();
6913 }
6914
6915 /* Handle the MRI FOR pseudo-op. */
6916
6917 static void
6918 s_mri_for (int qual)
6919 {
6920 const char *varstart, *varstop;
6921 const char *initstart, *initstop;
6922 const char *endstart, *endstop;
6923 const char *bystart, *bystop;
6924 int up;
6925 int by;
6926 int extent;
6927 struct mri_control_info *n;
6928 char *buf;
6929 char *s;
6930 char ex[2];
6931
6932 /* The syntax is
6933 FOR.q var = init { TO | DOWNTO } end [ BY by ] DO.e
6934 */
6935
6936 SKIP_WHITESPACE ();
6937 varstart = input_line_pointer;
6938
6939 /* Look for the '='. */
6940 while (! is_end_of_line[(unsigned char) *input_line_pointer]
6941 && *input_line_pointer != '=')
6942 ++input_line_pointer;
6943 if (*input_line_pointer != '=')
6944 {
6945 as_bad (_("missing ="));
6946 ignore_rest_of_line ();
6947 return;
6948 }
6949
6950 varstop = input_line_pointer;
6951 if (varstop > varstart
6952 && (varstop[-1] == ' ' || varstop[-1] == '\t'))
6953 --varstop;
6954
6955 ++input_line_pointer;
6956
6957 initstart = input_line_pointer;
6958
6959 /* Look for TO or DOWNTO. */
6960 up = 1;
6961 initstop = NULL;
6962 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6963 {
6964 if (strncasecmp (input_line_pointer, "TO", 2) == 0
6965 && ! is_part_of_name (input_line_pointer[2]))
6966 {
6967 initstop = input_line_pointer;
6968 input_line_pointer += 2;
6969 break;
6970 }
6971 if (strncasecmp (input_line_pointer, "DOWNTO", 6) == 0
6972 && ! is_part_of_name (input_line_pointer[6]))
6973 {
6974 initstop = input_line_pointer;
6975 up = 0;
6976 input_line_pointer += 6;
6977 break;
6978 }
6979 ++input_line_pointer;
6980 }
6981 if (initstop == NULL)
6982 {
6983 as_bad (_("missing to or downto"));
6984 ignore_rest_of_line ();
6985 return;
6986 }
6987 if (initstop > initstart
6988 && (initstop[-1] == ' ' || initstop[-1] == '\t'))
6989 --initstop;
6990
6991 SKIP_WHITESPACE ();
6992 endstart = input_line_pointer;
6993
6994 /* Look for BY or DO. */
6995 by = 0;
6996 endstop = NULL;
6997 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6998 {
6999 if (strncasecmp (input_line_pointer, "BY", 2) == 0
7000 && ! is_part_of_name (input_line_pointer[2]))
7001 {
7002 endstop = input_line_pointer;
7003 by = 1;
7004 input_line_pointer += 2;
7005 break;
7006 }
7007 if (strncasecmp (input_line_pointer, "DO", 2) == 0
7008 && (input_line_pointer[2] == '.'
7009 || ! is_part_of_name (input_line_pointer[2])))
7010 {
7011 endstop = input_line_pointer;
7012 input_line_pointer += 2;
7013 break;
7014 }
7015 ++input_line_pointer;
7016 }
7017 if (endstop == NULL)
7018 {
7019 as_bad (_("missing do"));
7020 ignore_rest_of_line ();
7021 return;
7022 }
7023 if (endstop > endstart
7024 && (endstop[-1] == ' ' || endstop[-1] == '\t'))
7025 --endstop;
7026
7027 if (! by)
7028 {
7029 bystart = "#1";
7030 bystop = bystart + 2;
7031 }
7032 else
7033 {
7034 SKIP_WHITESPACE ();
7035 bystart = input_line_pointer;
7036
7037 /* Look for DO. */
7038 bystop = NULL;
7039 while (! is_end_of_line[(unsigned char) *input_line_pointer])
7040 {
7041 if (strncasecmp (input_line_pointer, "DO", 2) == 0
7042 && (input_line_pointer[2] == '.'
7043 || ! is_part_of_name (input_line_pointer[2])))
7044 {
7045 bystop = input_line_pointer;
7046 input_line_pointer += 2;
7047 break;
7048 }
7049 ++input_line_pointer;
7050 }
7051 if (bystop == NULL)
7052 {
7053 as_bad (_("missing do"));
7054 ignore_rest_of_line ();
7055 return;
7056 }
7057 if (bystop > bystart
7058 && (bystop[-1] == ' ' || bystop[-1] == '\t'))
7059 --bystop;
7060 }
7061
7062 if (*input_line_pointer != '.')
7063 extent = '\0';
7064 else
7065 {
7066 extent = input_line_pointer[1];
7067 input_line_pointer += 2;
7068 }
7069
7070 /* We have fully parsed the FOR operands. Now build the loop. */
7071 n = push_mri_control (mri_for);
7072
7073 buf = (char *) xmalloc (50 + (input_line_pointer - varstart));
7074
7075 /* Move init,var. */
7076 s = buf;
7077 *s++ = 'm';
7078 *s++ = 'o';
7079 *s++ = 'v';
7080 *s++ = 'e';
7081 if (qual != '\0')
7082 *s++ = TOLOWER (qual);
7083 *s++ = ' ';
7084 memcpy (s, initstart, initstop - initstart);
7085 s += initstop - initstart;
7086 *s++ = ',';
7087 memcpy (s, varstart, varstop - varstart);
7088 s += varstop - varstart;
7089 *s = '\0';
7090 mri_assemble (buf);
7091
7092 colon (n->top);
7093
7094 /* cmp end,var. */
7095 s = buf;
7096 *s++ = 'c';
7097 *s++ = 'm';
7098 *s++ = 'p';
7099 if (qual != '\0')
7100 *s++ = TOLOWER (qual);
7101 *s++ = ' ';
7102 memcpy (s, endstart, endstop - endstart);
7103 s += endstop - endstart;
7104 *s++ = ',';
7105 memcpy (s, varstart, varstop - varstart);
7106 s += varstop - varstart;
7107 *s = '\0';
7108 mri_assemble (buf);
7109
7110 /* bcc bottom. */
7111 ex[0] = TOLOWER (extent);
7112 ex[1] = '\0';
7113 if (up)
7114 sprintf (buf, "blt%s %s", ex, n->bottom);
7115 else
7116 sprintf (buf, "bgt%s %s", ex, n->bottom);
7117 mri_assemble (buf);
7118
7119 /* Put together the add or sub instruction used by ENDF. */
7120 s = buf;
7121 if (up)
7122 strcpy (s, "add");
7123 else
7124 strcpy (s, "sub");
7125 s += 3;
7126 if (qual != '\0')
7127 *s++ = TOLOWER (qual);
7128 *s++ = ' ';
7129 memcpy (s, bystart, bystop - bystart);
7130 s += bystop - bystart;
7131 *s++ = ',';
7132 memcpy (s, varstart, varstop - varstart);
7133 s += varstop - varstart;
7134 *s = '\0';
7135 n->incr = buf;
7136
7137 if (flag_mri)
7138 {
7139 while (! is_end_of_line[(unsigned char) *input_line_pointer])
7140 ++input_line_pointer;
7141 }
7142
7143 demand_empty_rest_of_line ();
7144 }
7145
7146 /* Handle the MRI ENDF pseudo-op. */
7147
7148 static void
7149 s_mri_endf (int ignore ATTRIBUTE_UNUSED)
7150 {
7151 if (mri_control_stack == NULL
7152 || mri_control_stack->type != mri_for)
7153 {
7154 as_bad (_("endf without for"));
7155 ignore_rest_of_line ();
7156 return;
7157 }
7158
7159 colon (mri_control_stack->next);
7160
7161 mri_assemble (mri_control_stack->incr);
7162
7163 sprintf (mri_control_stack->incr, "bra %s", mri_control_stack->top);
7164 mri_assemble (mri_control_stack->incr);
7165
7166 free (mri_control_stack->incr);
7167
7168 colon (mri_control_stack->bottom);
7169
7170 pop_mri_control ();
7171
7172 if (flag_mri)
7173 {
7174 while (! is_end_of_line[(unsigned char) *input_line_pointer])
7175 ++input_line_pointer;
7176 }
7177
7178 demand_empty_rest_of_line ();
7179 }
7180
7181 /* Handle the MRI REPEAT pseudo-op. */
7182
7183 static void
7184 s_mri_repeat (int ignore ATTRIBUTE_UNUSED)
7185 {
7186 struct mri_control_info *n;
7187
7188 n = push_mri_control (mri_repeat);
7189 colon (n->top);
7190 if (flag_mri)
7191 {
7192 while (! is_end_of_line[(unsigned char) *input_line_pointer])
7193 ++input_line_pointer;
7194 }
7195 demand_empty_rest_of_line ();
7196 }
7197
7198 /* Handle the MRI UNTIL pseudo-op. */
7199
7200 static void
7201 s_mri_until (int qual)
7202 {
7203 char *s;
7204
7205 if (mri_control_stack == NULL
7206 || mri_control_stack->type != mri_repeat)
7207 {
7208 as_bad (_("until without repeat"));
7209 ignore_rest_of_line ();
7210 return;
7211 }
7212
7213 colon (mri_control_stack->next);
7214
7215 for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++)
7216 ;
7217
7218 parse_mri_control_expression (s, qual, (const char *) NULL,
7219 mri_control_stack->top, '\0');
7220
7221 colon (mri_control_stack->bottom);
7222
7223 input_line_pointer = s;
7224
7225 pop_mri_control ();
7226
7227 if (flag_mri)
7228 {
7229 while (! is_end_of_line[(unsigned char) *input_line_pointer])
7230 ++input_line_pointer;
7231 }
7232
7233 demand_empty_rest_of_line ();
7234 }
7235
7236 /* Handle the MRI WHILE pseudo-op. */
7237
7238 static void
7239 s_mri_while (int qual)
7240 {
7241 char *s;
7242
7243 struct mri_control_info *n;
7244
7245 s = input_line_pointer;
7246 /* We only accept '*' as introduction of comments if preceded by white space
7247 or at first column of a line (I think this can't actually happen here?)
7248 This is important when assembling:
7249 while d0 <ne> 12(a0,d0*2) do
7250 while d0 <ne> #CONST*20 do. */
7251 while (! (is_end_of_line[(unsigned char) *s]
7252 || (flag_mri
7253 && *s == '*'
7254 && (s == input_line_pointer
7255 || *(s-1) == ' '
7256 || *(s-1) == '\t'))))
7257 s++;
7258 --s;
7259 while (*s == ' ' || *s == '\t')
7260 --s;
7261 if (s - input_line_pointer > 1
7262 && s[-1] == '.')
7263 s -= 2;
7264 if (s - input_line_pointer < 2
7265 || strncasecmp (s - 1, "DO", 2) != 0)
7266 {
7267 as_bad (_("missing do"));
7268 ignore_rest_of_line ();
7269 return;
7270 }
7271
7272 n = push_mri_control (mri_while);
7273
7274 colon (n->next);
7275
7276 parse_mri_control_expression (s - 1, qual, (const char *) NULL, n->bottom,
7277 s[1] == '.' ? s[2] : '\0');
7278
7279 input_line_pointer = s + 1;
7280 if (*input_line_pointer == '.')
7281 input_line_pointer += 2;
7282
7283 if (flag_mri)
7284 {
7285 while (! is_end_of_line[(unsigned char) *input_line_pointer])
7286 ++input_line_pointer;
7287 }
7288
7289 demand_empty_rest_of_line ();
7290 }
7291
7292 /* Handle the MRI ENDW pseudo-op. */
7293
7294 static void
7295 s_mri_endw (int ignore ATTRIBUTE_UNUSED)
7296 {
7297 char *buf;
7298
7299 if (mri_control_stack == NULL
7300 || mri_control_stack->type != mri_while)
7301 {
7302 as_bad (_("endw without while"));
7303 ignore_rest_of_line ();
7304 return;
7305 }
7306
7307 buf = (char *) xmalloc (20 + strlen (mri_control_stack->next));
7308 sprintf (buf, "bra %s", mri_control_stack->next);
7309 mri_assemble (buf);
7310 free (buf);
7311
7312 colon (mri_control_stack->bottom);
7313
7314 pop_mri_control ();
7315
7316 if (flag_mri)
7317 {
7318 while (! is_end_of_line[(unsigned char) *input_line_pointer])
7319 ++input_line_pointer;
7320 }
7321
7322 demand_empty_rest_of_line ();
7323 }
7324 \f
7325 /* Parse a .cpu directive. */
7326
7327 static void
7328 s_m68k_cpu (int ignored ATTRIBUTE_UNUSED)
7329 {
7330 char saved_char;
7331 char *name;
7332
7333 if (initialized)
7334 {
7335 as_bad (_("already assembled instructions"));
7336 ignore_rest_of_line ();
7337 return;
7338 }
7339
7340 name = input_line_pointer;
7341 while (*input_line_pointer && !ISSPACE(*input_line_pointer))
7342 input_line_pointer++;
7343 saved_char = *input_line_pointer;
7344 *input_line_pointer = 0;
7345
7346 m68k_set_cpu (name, 1, 0);
7347
7348 *input_line_pointer = saved_char;
7349 demand_empty_rest_of_line ();
7350 return;
7351 }
7352
7353 /* Parse a .arch directive. */
7354
7355 static void
7356 s_m68k_arch (int ignored ATTRIBUTE_UNUSED)
7357 {
7358 char saved_char;
7359 char *name;
7360
7361 if (initialized)
7362 {
7363 as_bad (_("already assembled instructions"));
7364 ignore_rest_of_line ();
7365 return;
7366 }
7367
7368 name = input_line_pointer;
7369 while (*input_line_pointer && *input_line_pointer != ','
7370 && !ISSPACE (*input_line_pointer))
7371 input_line_pointer++;
7372 saved_char = *input_line_pointer;
7373 *input_line_pointer = 0;
7374
7375 if (m68k_set_arch (name, 1, 0))
7376 {
7377 /* Scan extensions. */
7378 do
7379 {
7380 *input_line_pointer++ = saved_char;
7381 if (!*input_line_pointer || ISSPACE (*input_line_pointer))
7382 break;
7383 name = input_line_pointer;
7384 while (*input_line_pointer && *input_line_pointer != ','
7385 && !ISSPACE (*input_line_pointer))
7386 input_line_pointer++;
7387 saved_char = *input_line_pointer;
7388 *input_line_pointer = 0;
7389 }
7390 while (m68k_set_extension (name, 1, 0));
7391 }
7392
7393 *input_line_pointer = saved_char;
7394 demand_empty_rest_of_line ();
7395 return;
7396 }
7397 \f
7398 /* Lookup a cpu name in TABLE and return the slot found. Return NULL
7399 if none is found, the caller is responsible for emitting an error
7400 message. If ALLOW_M is non-zero, we allow an initial 'm' on the
7401 cpu name, if it begins with a '6' (possibly skipping an intervening
7402 'c'. We also allow a 'c' in the same place. if NEGATED is
7403 non-zero, we accept a leading 'no-' and *NEGATED is set to true, if
7404 the option is indeed negated. */
7405
7406 static const struct m68k_cpu *
7407 m68k_lookup_cpu (const char *arg, const struct m68k_cpu *table,
7408 int allow_m, int *negated)
7409 {
7410 /* allow negated value? */
7411 if (negated)
7412 {
7413 *negated = 0;
7414
7415 if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-')
7416 {
7417 arg += 3;
7418 *negated = 1;
7419 }
7420 }
7421
7422 /* Remove 'm' or 'mc' prefix from 68k variants. */
7423 if (allow_m)
7424 {
7425 if (arg[0] == 'm')
7426 {
7427 if (arg[1] == '6')
7428 arg += 1;
7429 else if (arg[1] == 'c' && arg[2] == '6')
7430 arg += 2;
7431 }
7432 }
7433 else if (arg[0] == 'c' && arg[1] == '6')
7434 arg += 1;
7435
7436 for (; table->name; table++)
7437 if (!strcmp (arg, table->name))
7438 {
7439 if (table->alias < -1 || table->alias > 1)
7440 as_bad (_("`%s' is deprecated, use `%s'"),
7441 table->name, table[table->alias < 0 ? 1 : -1].name);
7442 return table;
7443 }
7444 return 0;
7445 }
7446
7447 /* Set the cpu, issuing errors if it is unrecognized. */
7448
7449 static int
7450 m68k_set_cpu (char const *name, int allow_m, int silent)
7451 {
7452 const struct m68k_cpu *cpu;
7453
7454 cpu = m68k_lookup_cpu (name, m68k_cpus, allow_m, NULL);
7455
7456 if (!cpu)
7457 {
7458 if (!silent)
7459 as_bad (_("cpu `%s' unrecognized"), name);
7460 return 0;
7461 }
7462 selected_cpu = cpu;
7463 return 1;
7464 }
7465
7466 /* Set the architecture, issuing errors if it is unrecognized. */
7467
7468 static int
7469 m68k_set_arch (char const *name, int allow_m, int silent)
7470 {
7471 const struct m68k_cpu *arch;
7472
7473 arch = m68k_lookup_cpu (name, m68k_archs, allow_m, NULL);
7474
7475 if (!arch)
7476 {
7477 if (!silent)
7478 as_bad (_("architecture `%s' unrecognized"), name);
7479 return 0;
7480 }
7481 selected_arch = arch;
7482 return 1;
7483 }
7484
7485 /* Set the architecture extension, issuing errors if it is
7486 unrecognized, or invalid */
7487
7488 static int
7489 m68k_set_extension (char const *name, int allow_m, int silent)
7490 {
7491 int negated;
7492 const struct m68k_cpu *ext;
7493
7494 ext = m68k_lookup_cpu (name, m68k_extensions, allow_m, &negated);
7495
7496 if (!ext)
7497 {
7498 if (!silent)
7499 as_bad (_("extension `%s' unrecognized"), name);
7500 return 0;
7501 }
7502
7503 if (negated)
7504 not_current_architecture |= (ext->control_regs
7505 ? *(unsigned *)ext->control_regs: ext->arch);
7506 else
7507 current_architecture |= ext->arch;
7508 return 1;
7509 }
7510
7511 /* md_parse_option
7512 Invocation line includes a switch not recognized by the base assembler.
7513 */
7514
7515 #ifdef OBJ_ELF
7516 const char *md_shortopts = "lSA:m:kQ:V";
7517 #else
7518 const char *md_shortopts = "lSA:m:k";
7519 #endif
7520
7521 struct option md_longopts[] = {
7522 #define OPTION_PIC (OPTION_MD_BASE)
7523 {"pic", no_argument, NULL, OPTION_PIC},
7524 #define OPTION_REGISTER_PREFIX_OPTIONAL (OPTION_MD_BASE + 1)
7525 {"register-prefix-optional", no_argument, NULL,
7526 OPTION_REGISTER_PREFIX_OPTIONAL},
7527 #define OPTION_BITWISE_OR (OPTION_MD_BASE + 2)
7528 {"bitwise-or", no_argument, NULL, OPTION_BITWISE_OR},
7529 #define OPTION_BASE_SIZE_DEFAULT_16 (OPTION_MD_BASE + 3)
7530 {"base-size-default-16", no_argument, NULL, OPTION_BASE_SIZE_DEFAULT_16},
7531 #define OPTION_BASE_SIZE_DEFAULT_32 (OPTION_MD_BASE + 4)
7532 {"base-size-default-32", no_argument, NULL, OPTION_BASE_SIZE_DEFAULT_32},
7533 #define OPTION_DISP_SIZE_DEFAULT_16 (OPTION_MD_BASE + 5)
7534 {"disp-size-default-16", no_argument, NULL, OPTION_DISP_SIZE_DEFAULT_16},
7535 #define OPTION_DISP_SIZE_DEFAULT_32 (OPTION_MD_BASE + 6)
7536 {"disp-size-default-32", no_argument, NULL, OPTION_DISP_SIZE_DEFAULT_32},
7537 #define OPTION_PCREL (OPTION_MD_BASE + 7)
7538 {"pcrel", no_argument, NULL, OPTION_PCREL},
7539 {NULL, no_argument, NULL, 0}
7540 };
7541 size_t md_longopts_size = sizeof (md_longopts);
7542
7543 int
7544 md_parse_option (int c, char *arg)
7545 {
7546 switch (c)
7547 {
7548 case 'l': /* -l means keep external to 2 bit offset
7549 rather than 16 bit one. */
7550 flag_short_refs = 1;
7551 break;
7552
7553 case 'S': /* -S means that jbsr's always turn into
7554 jsr's. */
7555 flag_long_jumps = 1;
7556 break;
7557
7558 case OPTION_PCREL: /* --pcrel means never turn PC-relative
7559 branches into absolute jumps. */
7560 flag_keep_pcrel = 1;
7561 break;
7562
7563 case OPTION_PIC:
7564 case 'k':
7565 flag_want_pic = 1;
7566 break; /* -pic, Position Independent Code. */
7567
7568 case OPTION_REGISTER_PREFIX_OPTIONAL:
7569 flag_reg_prefix_optional = 1;
7570 reg_prefix_optional_seen = 1;
7571 break;
7572
7573 /* -V: SVR4 argument to print version ID. */
7574 case 'V':
7575 print_version_id ();
7576 break;
7577
7578 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
7579 should be emitted or not. FIXME: Not implemented. */
7580 case 'Q':
7581 break;
7582
7583 case OPTION_BITWISE_OR:
7584 {
7585 char *n, *t;
7586 const char *s;
7587
7588 n = (char *) xmalloc (strlen (m68k_comment_chars) + 1);
7589 t = n;
7590 for (s = m68k_comment_chars; *s != '\0'; s++)
7591 if (*s != '|')
7592 *t++ = *s;
7593 *t = '\0';
7594 m68k_comment_chars = n;
7595 }
7596 break;
7597
7598 case OPTION_BASE_SIZE_DEFAULT_16:
7599 m68k_index_width_default = SIZE_WORD;
7600 break;
7601
7602 case OPTION_BASE_SIZE_DEFAULT_32:
7603 m68k_index_width_default = SIZE_LONG;
7604 break;
7605
7606 case OPTION_DISP_SIZE_DEFAULT_16:
7607 m68k_rel32 = 0;
7608 m68k_rel32_from_cmdline = 1;
7609 break;
7610
7611 case OPTION_DISP_SIZE_DEFAULT_32:
7612 m68k_rel32 = 1;
7613 m68k_rel32_from_cmdline = 1;
7614 break;
7615
7616 case 'A':
7617 #if WARN_DEPRECATED
7618 as_tsktsk (_ ("option `-A%s' is deprecated: use `-%s'",
7619 arg, arg));
7620 #endif
7621 /* Intentional fall-through. */
7622 case 'm':
7623 if (!strncmp (arg, "arch=", 5))
7624 m68k_set_arch (arg + 5, 1, 0);
7625 else if (!strncmp (arg, "cpu=", 4))
7626 m68k_set_cpu (arg + 4, 1, 0);
7627 else if (m68k_set_extension (arg, 0, 1))
7628 ;
7629 else if (m68k_set_arch (arg, 0, 1))
7630 ;
7631 else if (m68k_set_cpu (arg, 0, 1))
7632 ;
7633 else
7634 return 0;
7635 break;
7636
7637 default:
7638 return 0;
7639 }
7640
7641 return 1;
7642 }
7643
7644 /* Setup tables from the selected arch and/or cpu */
7645
7646 static void
7647 m68k_init_arch (void)
7648 {
7649 if (not_current_architecture & current_architecture)
7650 {
7651 as_bad (_("architecture features both enabled and disabled"));
7652 not_current_architecture &= ~current_architecture;
7653 }
7654 if (selected_arch)
7655 {
7656 current_architecture |= selected_arch->arch;
7657 control_regs = selected_arch->control_regs;
7658 }
7659 else
7660 current_architecture |= selected_cpu->arch;
7661
7662 current_architecture &= ~not_current_architecture;
7663
7664 if ((current_architecture & (cfloat | m68881)) == (cfloat | m68881))
7665 {
7666 /* Determine which float is really meant. */
7667 if (current_architecture & (m68k_mask & ~m68881))
7668 current_architecture ^= cfloat;
7669 else
7670 current_architecture ^= m68881;
7671 }
7672
7673 if (selected_cpu)
7674 {
7675 control_regs = selected_cpu->control_regs;
7676 if (current_architecture & ~selected_cpu->arch)
7677 {
7678 as_bad (_("selected processor does not have all features of selected architecture"));
7679 current_architecture
7680 = selected_cpu->arch & ~not_current_architecture;
7681 }
7682 }
7683
7684 if ((current_architecture & m68k_mask)
7685 && (current_architecture & ~m68k_mask))
7686 {
7687 as_bad (_ ("m68k and cf features both selected"));
7688 if (current_architecture & m68k_mask)
7689 current_architecture &= m68k_mask;
7690 else
7691 current_architecture &= ~m68k_mask;
7692 }
7693
7694 /* Permit m68881 specification with all cpus; those that can't work
7695 with a coprocessor could be doing emulation. */
7696 if (current_architecture & m68851)
7697 {
7698 if (current_architecture & m68040)
7699 as_warn (_("68040 and 68851 specified; mmu instructions may assemble incorrectly"));
7700 }
7701 /* What other incompatibilities could we check for? */
7702
7703 if (cpu_of_arch (current_architecture) < m68020
7704 || arch_coldfire_p (current_architecture))
7705 md_relax_table[TAB (PCINDEX, BYTE)].rlx_more = 0;
7706
7707 initialized = 1;
7708 }
7709
7710 void
7711 md_show_usage (FILE *stream)
7712 {
7713 const char *default_cpu = TARGET_CPU;
7714 int i;
7715
7716 /* Get the canonical name for the default target CPU. */
7717 if (*default_cpu == 'm')
7718 default_cpu++;
7719 for (i = 0; m68k_cpus[i].name; i++)
7720 {
7721 if (strcasecmp (default_cpu, m68k_cpus[i].name) == 0)
7722 {
7723 while (m68k_cpus[i].alias > 0)
7724 i--;
7725 while (m68k_cpus[i].alias < 0)
7726 i++;
7727 default_cpu = m68k_cpus[i].name;
7728 }
7729 }
7730
7731 fprintf (stream, _("\
7732 -march=<arch> set architecture\n\
7733 -mcpu=<cpu> set cpu [default %s]\n\
7734 "), default_cpu);
7735 for (i = 0; m68k_extensions[i].name; i++)
7736 fprintf (stream, _("\
7737 -m[no-]%-16s enable/disable%s architecture extension\n\
7738 "), m68k_extensions[i].name,
7739 m68k_extensions[i].alias > 0 ? " ColdFire"
7740 : m68k_extensions[i].alias < 0 ? " m68k" : "");
7741
7742 fprintf (stream, _("\
7743 -l use 1 word for refs to undefined symbols [default 2]\n\
7744 -pic, -k generate position independent code\n\
7745 -S turn jbsr into jsr\n\
7746 --pcrel never turn PC-relative branches into absolute jumps\n\
7747 --register-prefix-optional\n\
7748 recognize register names without prefix character\n\
7749 --bitwise-or do not treat `|' as a comment character\n\
7750 --base-size-default-16 base reg without size is 16 bits\n\
7751 --base-size-default-32 base reg without size is 32 bits (default)\n\
7752 --disp-size-default-16 displacement with unknown size is 16 bits\n\
7753 --disp-size-default-32 displacement with unknown size is 32 bits (default)\n\
7754 "));
7755
7756 fprintf (stream, _("Architecture variants are: "));
7757 for (i = 0; m68k_archs[i].name; i++)
7758 {
7759 if (i)
7760 fprintf (stream, " | ");
7761 fprintf (stream, "%s", m68k_archs[i].name);
7762 }
7763 fprintf (stream, "\n");
7764
7765 fprintf (stream, _("Processor variants are: "));
7766 for (i = 0; m68k_cpus[i].name; i++)
7767 {
7768 if (i)
7769 fprintf (stream, " | ");
7770 fprintf (stream, "%s", m68k_cpus[i].name);
7771 }
7772 fprintf (stream, _("\n"));
7773 }
7774 \f
7775 #ifdef TEST2
7776
7777 /* TEST2: Test md_assemble() */
7778 /* Warning, this routine probably doesn't work anymore. */
7779 int
7780 main (void)
7781 {
7782 struct m68k_it the_ins;
7783 char buf[120];
7784 char *cp;
7785 int n;
7786
7787 m68k_ip_begin ();
7788 for (;;)
7789 {
7790 if (!gets (buf) || !*buf)
7791 break;
7792 if (buf[0] == '|' || buf[1] == '.')
7793 continue;
7794 for (cp = buf; *cp; cp++)
7795 if (*cp == '\t')
7796 *cp = ' ';
7797 if (is_label (buf))
7798 continue;
7799 memset (&the_ins, '\0', sizeof (the_ins));
7800 m68k_ip (&the_ins, buf);
7801 if (the_ins.error)
7802 {
7803 printf (_("Error %s in %s\n"), the_ins.error, buf);
7804 }
7805 else
7806 {
7807 printf (_("Opcode(%d.%s): "), the_ins.numo, the_ins.args);
7808 for (n = 0; n < the_ins.numo; n++)
7809 printf (" 0x%x", the_ins.opcode[n] & 0xffff);
7810 printf (" ");
7811 print_the_insn (&the_ins.opcode[0], stdout);
7812 (void) putchar ('\n');
7813 }
7814 for (n = 0; n < strlen (the_ins.args) / 2; n++)
7815 {
7816 if (the_ins.operands[n].error)
7817 {
7818 printf ("op%d Error %s in %s\n", n, the_ins.operands[n].error, buf);
7819 continue;
7820 }
7821 printf ("mode %d, reg %d, ", the_ins.operands[n].mode,
7822 the_ins.operands[n].reg);
7823 if (the_ins.operands[n].b_const)
7824 printf ("Constant: '%.*s', ",
7825 1 + the_ins.operands[n].e_const - the_ins.operands[n].b_const,
7826 the_ins.operands[n].b_const);
7827 printf ("ireg %d, isiz %d, imul %d, ", the_ins.operands[n].ireg,
7828 the_ins.operands[n].isiz, the_ins.operands[n].imul);
7829 if (the_ins.operands[n].b_iadd)
7830 printf ("Iadd: '%.*s',",
7831 1 + the_ins.operands[n].e_iadd - the_ins.operands[n].b_iadd,
7832 the_ins.operands[n].b_iadd);
7833 putchar ('\n');
7834 }
7835 }
7836 m68k_ip_end ();
7837 return 0;
7838 }
7839
7840 int
7841 is_label (char *str)
7842 {
7843 while (*str == ' ')
7844 str++;
7845 while (*str && *str != ' ')
7846 str++;
7847 if (str[-1] == ':' || str[1] == '=')
7848 return 1;
7849 return 0;
7850 }
7851
7852 #endif
7853
7854 /* Possible states for relaxation:
7855
7856 0 0 branch offset byte (bra, etc)
7857 0 1 word
7858 0 2 long
7859
7860 1 0 indexed offsets byte a0@(32,d4:w:1) etc
7861 1 1 word
7862 1 2 long
7863
7864 2 0 two-offset index word-word a0@(32,d4)@(45) etc
7865 2 1 word-long
7866 2 2 long-word
7867 2 3 long-long
7868
7869 */
7870
7871 /* We have no need to default values of symbols. */
7872
7873 symbolS *
7874 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
7875 {
7876 return 0;
7877 }
7878
7879 /* Round up a section size to the appropriate boundary. */
7880 valueT
7881 md_section_align (segT segment ATTRIBUTE_UNUSED, valueT size)
7882 {
7883 #ifdef OBJ_AOUT
7884 /* For a.out, force the section size to be aligned. If we don't do
7885 this, BFD will align it for us, but it will not write out the
7886 final bytes of the section. This may be a bug in BFD, but it is
7887 easier to fix it here since that is how the other a.out targets
7888 work. */
7889 int align;
7890
7891 align = bfd_get_section_alignment (stdoutput, segment);
7892 size = ((size + (1 << align) - 1) & ((valueT) -1 << align));
7893 #endif
7894
7895 return size;
7896 }
7897
7898 /* Exactly what point is a PC-relative offset relative TO?
7899 On the 68k, it is relative to the address of the first extension
7900 word. The difference between the addresses of the offset and the
7901 first extension word is stored in fx_pcrel_adjust. */
7902 long
7903 md_pcrel_from (fixS *fixP)
7904 {
7905 int adjust;
7906
7907 adjust = fixP->fx_pcrel_adjust;
7908 if (adjust == 64)
7909 adjust = -1;
7910 return fixP->fx_where + fixP->fx_frag->fr_address - adjust;
7911 }
7912
7913 #ifdef OBJ_ELF
7914 void
7915 m68k_elf_final_processing (void)
7916 {
7917 unsigned flags = 0;
7918
7919 if (arch_coldfire_fpu (current_architecture))
7920 flags |= EF_M68K_CFV4E;
7921 /* Set file-specific flags if this is a cpu32 processor. */
7922 if (cpu_of_arch (current_architecture) & cpu32)
7923 flags |= EF_M68K_CPU32;
7924 else if (cpu_of_arch (current_architecture) & fido_a)
7925 flags |= EF_M68K_FIDO;
7926 else if ((cpu_of_arch (current_architecture) & m68000up)
7927 && !(cpu_of_arch (current_architecture) & m68020up))
7928 flags |= EF_M68K_M68000;
7929
7930 if (current_architecture & mcfisa_a)
7931 {
7932 static const unsigned isa_features[][2] =
7933 {
7934 {EF_M68K_CF_ISA_A_NODIV,mcfisa_a},
7935 {EF_M68K_CF_ISA_A, mcfisa_a|mcfhwdiv},
7936 {EF_M68K_CF_ISA_A_PLUS, mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp},
7937 {EF_M68K_CF_ISA_B_NOUSP,mcfisa_a|mcfisa_b|mcfhwdiv},
7938 {EF_M68K_CF_ISA_B, mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp},
7939 {EF_M68K_CF_ISA_C, mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp},
7940 {EF_M68K_CF_ISA_C_NODIV,mcfisa_a|mcfisa_c|mcfusp},
7941 {0,0},
7942 };
7943 static const unsigned mac_features[][2] =
7944 {
7945 {EF_M68K_CF_MAC, mcfmac},
7946 {EF_M68K_CF_EMAC, mcfemac},
7947 {0,0},
7948 };
7949 unsigned ix;
7950 unsigned pattern;
7951
7952 pattern = (current_architecture
7953 & (mcfisa_a|mcfisa_aa|mcfisa_b|mcfisa_c|mcfhwdiv|mcfusp));
7954 for (ix = 0; isa_features[ix][1]; ix++)
7955 {
7956 if (pattern == isa_features[ix][1])
7957 {
7958 flags |= isa_features[ix][0];
7959 break;
7960 }
7961 }
7962 if (!isa_features[ix][1])
7963 {
7964 cf_bad:
7965 as_warn (_("Not a defined coldfire architecture"));
7966 }
7967 else
7968 {
7969 if (current_architecture & cfloat)
7970 flags |= EF_M68K_CF_FLOAT | EF_M68K_CFV4E;
7971
7972 pattern = current_architecture & (mcfmac|mcfemac);
7973 if (pattern)
7974 {
7975 for (ix = 0; mac_features[ix][1]; ix++)
7976 {
7977 if (pattern == mac_features[ix][1])
7978 {
7979 flags |= mac_features[ix][0];
7980 break;
7981 }
7982 }
7983 if (!mac_features[ix][1])
7984 goto cf_bad;
7985 }
7986 }
7987 }
7988 elf_elfheader (stdoutput)->e_flags |= flags;
7989 }
7990
7991 /* Parse @TLSLDO and return the desired relocation. */
7992 static bfd_reloc_code_real_type
7993 m68k_elf_suffix (char **str_p, expressionS *exp_p)
7994 {
7995 char ident[20];
7996 char *str = *str_p;
7997 char *str2;
7998 int ch;
7999 int len;
8000
8001 if (*str++ != '@')
8002 return BFD_RELOC_UNUSED;
8003
8004 for (ch = *str, str2 = ident;
8005 (str2 < ident + sizeof (ident) - 1
8006 && (ISALNUM (ch) || ch == '@'));
8007 ch = *++str)
8008 {
8009 *str2++ = ch;
8010 }
8011
8012 *str2 = '\0';
8013 len = str2 - ident;
8014
8015 if (strncmp (ident, "TLSLDO", 6) == 0
8016 && len == 6)
8017 {
8018 /* Now check for identifier@suffix+constant. */
8019 if (*str == '-' || *str == '+')
8020 {
8021 char *orig_line = input_line_pointer;
8022 expressionS new_exp;
8023
8024 input_line_pointer = str;
8025 expression (&new_exp);
8026 if (new_exp.X_op == O_constant)
8027 {
8028 exp_p->X_add_number += new_exp.X_add_number;
8029 str = input_line_pointer;
8030 }
8031
8032 if (&input_line_pointer != str_p)
8033 input_line_pointer = orig_line;
8034 }
8035 *str_p = str;
8036
8037 return BFD_RELOC_68K_TLS_LDO32;
8038 }
8039
8040 return BFD_RELOC_UNUSED;
8041 }
8042
8043 /* Handles .long <tls_symbol>+0x8000 debug info.
8044 Clobbers input_line_pointer, checks end-of-line.
8045 Adapted from tc-ppc.c:ppc_elf_cons. */
8046 static void
8047 m68k_elf_cons (int nbytes /* 4=.long */)
8048 {
8049 if (is_it_end_of_statement ())
8050 {
8051 demand_empty_rest_of_line ();
8052 return;
8053 }
8054
8055 do
8056 {
8057 expressionS exp;
8058 bfd_reloc_code_real_type reloc;
8059
8060 expression (&exp);
8061 if (exp.X_op == O_symbol
8062 && *input_line_pointer == '@'
8063 && (reloc = m68k_elf_suffix (&input_line_pointer,
8064 &exp)) != BFD_RELOC_UNUSED)
8065 {
8066 reloc_howto_type *reloc_howto;
8067 int size;
8068
8069 reloc_howto = bfd_reloc_type_lookup (stdoutput, reloc);
8070 size = bfd_get_reloc_size (reloc_howto);
8071
8072 if (size > nbytes)
8073 {
8074 as_bad (_("%s relocations do not fit in %d bytes\n"),
8075 reloc_howto->name, nbytes);
8076 }
8077 else
8078 {
8079 char *p;
8080 int offset;
8081
8082 p = frag_more (nbytes);
8083 offset = 0;
8084 if (target_big_endian)
8085 offset = nbytes - size;
8086 fix_new_exp (frag_now, p - frag_now->fr_literal + offset, size,
8087 &exp, 0, reloc);
8088 }
8089 }
8090 else
8091 emit_expr (&exp, (unsigned int) nbytes);
8092 }
8093 while (*input_line_pointer++ == ',');
8094
8095 /* Put terminator back into stream. */
8096 input_line_pointer--;
8097 demand_empty_rest_of_line ();
8098 }
8099 #endif
8100
8101 int
8102 tc_m68k_regname_to_dw2regnum (char *regname)
8103 {
8104 unsigned int regnum;
8105 static const char *const regnames[] =
8106 {
8107 "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",
8108 "a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp",
8109 "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7",
8110 "pc"
8111 };
8112
8113 for (regnum = 0; regnum < ARRAY_SIZE (regnames); regnum++)
8114 if (strcmp (regname, regnames[regnum]) == 0)
8115 return regnum;
8116
8117 return -1;
8118 }
8119
8120 void
8121 tc_m68k_frame_initial_instructions (void)
8122 {
8123 static int sp_regno = -1;
8124
8125 if (sp_regno < 0)
8126 sp_regno = tc_m68k_regname_to_dw2regnum ("sp");
8127
8128 cfi_add_CFA_def_cfa (sp_regno, -DWARF2_CIE_DATA_ALIGNMENT);
8129 cfi_add_CFA_offset (DWARF2_DEFAULT_RETURN_COLUMN, DWARF2_CIE_DATA_ALIGNMENT);
8130 }
8131
8132 /* Check and emit error if broken-word handling has failed to fix up a
8133 case-table. This is called from write.c, after doing everything it
8134 knows about how to handle broken words. */
8135
8136 void
8137 tc_m68k_check_adjusted_broken_word (offsetT new_offset, struct broken_word *brokwP)
8138 {
8139 if (new_offset > 32767 || new_offset < -32768)
8140 as_bad_where (brokwP->frag->fr_file, brokwP->frag->fr_line,
8141 _("Adjusted signed .word (%#lx) overflows: `switch'-statement too large."),
8142 (long) new_offset);
8143 }
8144
GDB Binutils - Deliverables
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