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* config/tc-m68k.c (md_convert_frag_1): Replace as_fatal with
[deliverable/binutils-gdb.git] / gas / config / tc-m68k.c
1 /* tc-m68k.c -- Assemble for the m68k family
2 Copyright 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
3 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
4
5 This file is part of GAS, the GNU Assembler.
6
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
11
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
20 02110-1301, USA. */
21
22 #include "as.h"
23 #include "safe-ctype.h"
24 #include "obstack.h"
25 #include "subsegs.h"
26 #include "dwarf2dbg.h"
27 #include "dw2gencfi.h"
28
29 #include "opcode/m68k.h"
30 #include "m68k-parse.h"
31
32 #if defined (OBJ_ELF)
33 #include "elf/m68k.h"
34 #endif
35
36 #ifdef M68KCOFF
37 #include "obj-coff.h"
38 #endif
39
40 /* This string holds the chars that always start a comment. If the
41 pre-processor is disabled, these aren't very useful. The macro
42 tc_comment_chars points to this. We use this, rather than the
43 usual comment_chars, so that the --bitwise-or option will work. */
44 #if defined (TE_SVR4) || defined (TE_DELTA)
45 const char *m68k_comment_chars = "|#";
46 #else
47 const char *m68k_comment_chars = "|";
48 #endif
49
50 /* This array holds the chars that only start a comment at the beginning of
51 a line. If the line seems to have the form '# 123 filename'
52 .line and .file directives will appear in the pre-processed output */
53 /* Note that input_file.c hand checks for '#' at the beginning of the
54 first line of the input file. This is because the compiler outputs
55 #NO_APP at the beginning of its output. */
56 /* Also note that comments like this one will always work. */
57 const char line_comment_chars[] = "#*";
58
59 const char line_separator_chars[] = ";";
60
61 /* Chars that can be used to separate mant from exp in floating point nums. */
62 const char EXP_CHARS[] = "eE";
63
64 /* Chars that mean this number is a floating point constant, as
65 in "0f12.456" or "0d1.2345e12". */
66
67 const char FLT_CHARS[] = "rRsSfFdDxXeEpP";
68
69 /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
70 changed in read.c . Ideally it shouldn't have to know about it at all,
71 but nothing is ideal around here. */
72
73 /* Are we trying to generate PIC code? If so, absolute references
74 ought to be made into linkage table references or pc-relative
75 references. Not implemented. For ELF there are other means
76 to denote pic relocations. */
77 int flag_want_pic;
78
79 static int flag_short_refs; /* -l option. */
80 static int flag_long_jumps; /* -S option. */
81 static int flag_keep_pcrel; /* --pcrel option. */
82
83 #ifdef REGISTER_PREFIX_OPTIONAL
84 int flag_reg_prefix_optional = REGISTER_PREFIX_OPTIONAL;
85 #else
86 int flag_reg_prefix_optional;
87 #endif
88
89 /* Whether --register-prefix-optional was used on the command line. */
90 static int reg_prefix_optional_seen;
91
92 /* The floating point coprocessor to use by default. */
93 static enum m68k_register m68k_float_copnum = COP1;
94
95 /* If this is non-zero, then references to number(%pc) will be taken
96 to refer to number, rather than to %pc + number. */
97 static int m68k_abspcadd;
98
99 /* If this is non-zero, then the quick forms of the move, add, and sub
100 instructions are used when possible. */
101 static int m68k_quick = 1;
102
103 /* If this is non-zero, then if the size is not specified for a base
104 or outer displacement, the assembler assumes that the size should
105 be 32 bits. */
106 static int m68k_rel32 = 1;
107
108 /* This is non-zero if m68k_rel32 was set from the command line. */
109 static int m68k_rel32_from_cmdline;
110
111 /* The default width to use for an index register when using a base
112 displacement. */
113 static enum m68k_size m68k_index_width_default = SIZE_LONG;
114
115 /* We want to warn if any text labels are misaligned. In order to get
116 the right line number, we need to record the line number for each
117 label. */
118 struct label_line
119 {
120 struct label_line *next;
121 symbolS *label;
122 char *file;
123 unsigned int line;
124 int text;
125 };
126
127 /* The list of labels. */
128
129 static struct label_line *labels;
130
131 /* The current label. */
132
133 static struct label_line *current_label;
134
135 /* Pointer to list holding the opcodes sorted by name. */
136 static struct m68k_opcode const ** m68k_sorted_opcodes;
137
138 /* Its an arbitrary name: This means I don't approve of it.
139 See flames below. */
140 static struct obstack robyn;
141
142 struct m68k_incant
143 {
144 const char *m_operands;
145 unsigned long m_opcode;
146 short m_opnum;
147 short m_codenum;
148 int m_arch;
149 struct m68k_incant *m_next;
150 };
151
152 #define getone(x) ((((x)->m_opcode)>>16)&0xffff)
153 #define gettwo(x) (((x)->m_opcode)&0xffff)
154
155 static const enum m68k_register m68000_ctrl[] = { 0 };
156 static const enum m68k_register m68010_ctrl[] = {
157 SFC, DFC, USP, VBR,
158 0
159 };
160 static const enum m68k_register m68020_ctrl[] = {
161 SFC, DFC, USP, VBR, CACR, CAAR, MSP, ISP,
162 0
163 };
164 static const enum m68k_register m68040_ctrl[] = {
165 SFC, DFC, CACR, TC, ITT0, ITT1, DTT0, DTT1,
166 USP, VBR, MSP, ISP, MMUSR, URP, SRP,
167 0
168 };
169 static const enum m68k_register m68060_ctrl[] = {
170 SFC, DFC, CACR, TC, ITT0, ITT1, DTT0, DTT1, BUSCR,
171 USP, VBR, URP, SRP, PCR,
172 0
173 };
174 static const enum m68k_register mcf_ctrl[] = {
175 CACR, TC, ACR0, ACR1, ACR2, ACR3, VBR, ROMBAR,
176 RAMBAR0, RAMBAR1, RAMBAR, MBAR,
177 0
178 };
179 static const enum m68k_register mcf51qe_ctrl[] = {
180 VBR,
181 0
182 };
183 static const enum m68k_register mcf5206_ctrl[] = {
184 CACR, ACR0, ACR1, VBR, RAMBAR0, RAMBAR_ALT, MBAR,
185 0
186 };
187 static const enum m68k_register mcf5208_ctrl[] = {
188 CACR, ACR0, ACR1, VBR, RAMBAR, RAMBAR1,
189 0
190 };
191 static const enum m68k_register mcf5210a_ctrl[] = {
192 VBR, CACR, ACR0, ACR1, ROMBAR, RAMBAR, RAMBAR1, MBAR,
193 0
194 };
195 static const enum m68k_register mcf5213_ctrl[] = {
196 VBR, RAMBAR, RAMBAR1, FLASHBAR,
197 0
198 };
199 static const enum m68k_register mcf5216_ctrl[] = {
200 VBR, CACR, ACR0, ACR1, FLASHBAR, RAMBAR, RAMBAR1,
201 0
202 };
203 static const enum m68k_register mcf52223_ctrl[] = {
204 VBR, CACR, ACR0, ACR1, FLASHBAR, RAMBAR, RAMBAR1,
205 0
206 };
207 static const enum m68k_register mcf52235_ctrl[] = {
208 VBR, CACR, ACR0, ACR1, FLASHBAR, RAMBAR, RAMBAR1,
209 0
210 };
211 static const enum m68k_register mcf5225_ctrl[] = {
212 VBR, CACR, ACR0, ACR1, FLASHBAR, RAMBAR, MBAR, RAMBAR1,
213 0
214 };
215 static const enum m68k_register mcf5235_ctrl[] = {
216 VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
217 0
218 };
219 static const enum m68k_register mcf5249_ctrl[] = {
220 VBR, CACR, ACR0, ACR1, RAMBAR0, RAMBAR1, RAMBAR, MBAR, MBAR2,
221 0
222 };
223 static const enum m68k_register mcf5250_ctrl[] = {
224 VBR,
225 0
226 };
227 static const enum m68k_register mcf5253_ctrl[] = {
228 VBR, CACR, ACR0, ACR1, RAMBAR0, RAMBAR1, RAMBAR, MBAR, MBAR2,
229 0
230 };
231 static const enum m68k_register mcf5271_ctrl[] = {
232 VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
233 0
234 };
235 static const enum m68k_register mcf5272_ctrl[] = {
236 VBR, CACR, ACR0, ACR1, ROMBAR, RAMBAR_ALT, RAMBAR0, MBAR,
237 0
238 };
239 static const enum m68k_register mcf5275_ctrl[] = {
240 VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
241 0
242 };
243 static const enum m68k_register mcf5282_ctrl[] = {
244 VBR, CACR, ACR0, ACR1, FLASHBAR, RAMBAR, RAMBAR1,
245 0
246 };
247 static const enum m68k_register mcf5307_ctrl[] = {
248 CACR, ACR0, ACR1, VBR, RAMBAR0, RAMBAR_ALT, MBAR,
249 0
250 };
251 static const enum m68k_register mcf5329_ctrl[] = {
252 VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
253 0
254 };
255 static const enum m68k_register mcf5373_ctrl[] = {
256 VBR, CACR, ACR0, ACR1, RAMBAR, RAMBAR1,
257 0
258 };
259 static const enum m68k_register mcfv4e_ctrl[] = {
260 CACR, ASID, ACR0, ACR1, ACR2, ACR3, MMUBAR,
261 VBR, PC, ROMBAR0, ROMBAR1, RAMBAR0, RAMBAR1,
262 MBAR, SECMBAR,
263 MPCR /* Multiprocessor Control register */,
264 EDRAMBAR /* Embedded DRAM Base Address Register */,
265 /* Permutation control registers. */
266 PCR1U0, PCR1L0, PCR1U1, PCR1L1, PCR2U0, PCR2L0, PCR2U1, PCR2L1,
267 PCR3U0, PCR3L0, PCR3U1, PCR3L1,
268 /* Legacy names */
269 TC /* ASID */, BUSCR /* MMUBAR */,
270 ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
271 MBAR1 /* MBAR */, MBAR2 /* SECMBAR */, MBAR0 /* SECMBAR */,
272 ROMBAR /* ROMBAR0 */, RAMBAR /* RAMBAR1 */,
273 0
274 };
275 static const enum m68k_register mcf5407_ctrl[] = {
276 CACR, ASID, ACR0, ACR1, ACR2, ACR3,
277 VBR, PC, RAMBAR0, RAMBAR1, MBAR,
278 /* Legacy names */
279 TC /* ASID */,
280 ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
281 MBAR1 /* MBAR */, RAMBAR /* RAMBAR1 */,
282 0
283 };
284 static const enum m68k_register mcf54455_ctrl[] = {
285 CACR, ASID, ACR0, ACR1, ACR2, ACR3, MMUBAR,
286 VBR, PC, RAMBAR1, MBAR,
287 /* Legacy names */
288 TC /* ASID */, BUSCR /* MMUBAR */,
289 ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
290 MBAR1 /* MBAR */, RAMBAR /* RAMBAR1 */,
291 0
292 };
293 static const enum m68k_register mcf5475_ctrl[] = {
294 CACR, ASID, ACR0, ACR1, ACR2, ACR3, MMUBAR,
295 VBR, PC, RAMBAR0, RAMBAR1, MBAR,
296 /* Legacy names */
297 TC /* ASID */, BUSCR /* MMUBAR */,
298 ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
299 MBAR1 /* MBAR */, RAMBAR /* RAMBAR1 */,
300 0
301 };
302 static const enum m68k_register mcf5485_ctrl[] = {
303 CACR, ASID, ACR0, ACR1, ACR2, ACR3, MMUBAR,
304 VBR, PC, RAMBAR0, RAMBAR1, MBAR,
305 /* Legacy names */
306 TC /* ASID */, BUSCR /* MMUBAR */,
307 ITT0 /* ACR0 */, ITT1 /* ACR1 */, DTT0 /* ACR2 */, DTT1 /* ACR3 */,
308 MBAR1 /* MBAR */, RAMBAR /* RAMBAR1 */,
309 0
310 };
311 static const enum m68k_register fido_ctrl[] = {
312 SFC, DFC, USP, VBR, CAC, MBO,
313 0
314 };
315 #define cpu32_ctrl m68010_ctrl
316
317 static const enum m68k_register *control_regs;
318
319 /* Internal form of a 68020 instruction. */
320 struct m68k_it
321 {
322 const char *error;
323 const char *args; /* List of opcode info. */
324 int numargs;
325
326 int numo; /* Number of shorts in opcode. */
327 short opcode[11];
328
329 struct m68k_op operands[6];
330
331 int nexp; /* Number of exprs in use. */
332 struct m68k_exp exprs[4];
333
334 int nfrag; /* Number of frags we have to produce. */
335 struct
336 {
337 int fragoff; /* Where in the current opcode the frag ends. */
338 symbolS *fadd;
339 offsetT foff;
340 int fragty;
341 }
342 fragb[4];
343
344 int nrel; /* Num of reloc strucs in use. */
345 struct
346 {
347 int n;
348 expressionS exp;
349 char wid;
350 char pcrel;
351 /* In a pc relative address the difference between the address
352 of the offset and the address that the offset is relative
353 to. This depends on the addressing mode. Basically this
354 is the value to put in the offset field to address the
355 first byte of the offset, without regarding the special
356 significance of some values (in the branch instruction, for
357 example). */
358 int pcrel_fix;
359 #ifdef OBJ_ELF
360 /* Whether this expression needs special pic relocation, and if
361 so, which. */
362 enum pic_relocation pic_reloc;
363 #endif
364 }
365 reloc[5]; /* Five is enough??? */
366 };
367
368 #define cpu_of_arch(x) ((x) & (m68000up | mcfisa_a | fido_a))
369 #define float_of_arch(x) ((x) & mfloat)
370 #define mmu_of_arch(x) ((x) & mmmu)
371 #define arch_coldfire_p(x) ((x) & mcfisa_a)
372 #define arch_coldfire_fpu(x) ((x) & cfloat)
373
374 /* Macros for determining if cpu supports a specific addressing mode. */
375 #define HAVE_LONG_DISP(x) \
376 ((x) & (m68020|m68030|m68040|m68060|cpu32|fido_a|mcfisa_b|mcfisa_c))
377 #define HAVE_LONG_CALL(x) \
378 ((x) & (m68020|m68030|m68040|m68060|cpu32|fido_a|mcfisa_b|mcfisa_c))
379 #define HAVE_LONG_COND(x) \
380 ((x) & (m68020|m68030|m68040|m68060|cpu32|fido_a|mcfisa_b|mcfisa_c))
381 #define HAVE_LONG_BRANCH(x) \
382 ((x) & (m68020|m68030|m68040|m68060|cpu32|fido_a|mcfisa_b))
383 #define LONG_BRANCH_VIA_COND(x) (HAVE_LONG_COND(x) && !HAVE_LONG_BRANCH(x))
384
385 static struct m68k_it the_ins; /* The instruction being assembled. */
386
387 #define op(ex) ((ex)->exp.X_op)
388 #define adds(ex) ((ex)->exp.X_add_symbol)
389 #define subs(ex) ((ex)->exp.X_op_symbol)
390 #define offs(ex) ((ex)->exp.X_add_number)
391
392 /* Macros for adding things to the m68k_it struct. */
393 #define addword(w) (the_ins.opcode[the_ins.numo++] = (w))
394
395 /* Like addword, but goes BEFORE general operands. */
396
397 static void
398 insop (int w, const struct m68k_incant *opcode)
399 {
400 int z;
401 for (z = the_ins.numo; z > opcode->m_codenum; --z)
402 the_ins.opcode[z] = the_ins.opcode[z - 1];
403 for (z = 0; z < the_ins.nrel; z++)
404 the_ins.reloc[z].n += 2;
405 for (z = 0; z < the_ins.nfrag; z++)
406 the_ins.fragb[z].fragoff++;
407 the_ins.opcode[opcode->m_codenum] = w;
408 the_ins.numo++;
409 }
410
411 /* The numo+1 kludge is so we can hit the low order byte of the prev word.
412 Blecch. */
413 static void
414 add_fix (int width, struct m68k_exp *exp, int pc_rel, int pc_fix)
415 {
416 the_ins.reloc[the_ins.nrel].n = (width == 'B' || width == '3'
417 ? the_ins.numo * 2 - 1
418 : (width == 'b'
419 ? the_ins.numo * 2 + 1
420 : the_ins.numo * 2));
421 the_ins.reloc[the_ins.nrel].exp = exp->exp;
422 the_ins.reloc[the_ins.nrel].wid = width;
423 the_ins.reloc[the_ins.nrel].pcrel_fix = pc_fix;
424 #ifdef OBJ_ELF
425 the_ins.reloc[the_ins.nrel].pic_reloc = exp->pic_reloc;
426 #endif
427 the_ins.reloc[the_ins.nrel++].pcrel = pc_rel;
428 }
429
430 /* Cause an extra frag to be generated here, inserting up to 10 bytes
431 (that value is chosen in the frag_var call in md_assemble). TYPE
432 is the subtype of the frag to be generated; its primary type is
433 rs_machine_dependent.
434
435 The TYPE parameter is also used by md_convert_frag_1 and
436 md_estimate_size_before_relax. The appropriate type of fixup will
437 be emitted by md_convert_frag_1.
438
439 ADD becomes the FR_SYMBOL field of the frag, and OFF the FR_OFFSET. */
440 static void
441 add_frag (symbolS *add, offsetT off, int type)
442 {
443 the_ins.fragb[the_ins.nfrag].fragoff = the_ins.numo;
444 the_ins.fragb[the_ins.nfrag].fadd = add;
445 the_ins.fragb[the_ins.nfrag].foff = off;
446 the_ins.fragb[the_ins.nfrag++].fragty = type;
447 }
448
449 #define isvar(ex) \
450 (op (ex) != O_constant && op (ex) != O_big)
451
452 static char *crack_operand (char *str, struct m68k_op *opP);
453 static int get_num (struct m68k_exp *exp, int ok);
454 static int reverse_16_bits (int in);
455 static int reverse_8_bits (int in);
456 static void install_gen_operand (int mode, int val);
457 static void install_operand (int mode, int val);
458 static void s_bss (int);
459 static void s_data1 (int);
460 static void s_data2 (int);
461 static void s_even (int);
462 static void s_proc (int);
463 static void s_chip (int);
464 static void s_fopt (int);
465 static void s_opt (int);
466 static void s_reg (int);
467 static void s_restore (int);
468 static void s_save (int);
469 static void s_mri_if (int);
470 static void s_mri_else (int);
471 static void s_mri_endi (int);
472 static void s_mri_break (int);
473 static void s_mri_next (int);
474 static void s_mri_for (int);
475 static void s_mri_endf (int);
476 static void s_mri_repeat (int);
477 static void s_mri_until (int);
478 static void s_mri_while (int);
479 static void s_mri_endw (int);
480 static void s_m68k_cpu (int);
481 static void s_m68k_arch (int);
482
483 struct m68k_cpu
484 {
485 unsigned long arch; /* Architecture features. */
486 const enum m68k_register *control_regs; /* Control regs on chip */
487 const char *name; /* Name */
488 int alias; /* Alias for a cannonical name. If 1, then
489 succeeds canonical name, if -1 then
490 succeeds canonical name, if <-1 ||>1 this is a
491 deprecated name, and the next/previous name
492 should be used. */
493 };
494
495 /* We hold flags for features explicitly enabled and explicitly
496 disabled. */
497 static int current_architecture;
498 static int not_current_architecture;
499 static const struct m68k_cpu *selected_arch;
500 static const struct m68k_cpu *selected_cpu;
501 static int initialized;
502
503 /* Architecture models. */
504 static const struct m68k_cpu m68k_archs[] =
505 {
506 {m68000, m68000_ctrl, "68000", 0},
507 {m68010, m68010_ctrl, "68010", 0},
508 {m68020|m68881|m68851, m68020_ctrl, "68020", 0},
509 {m68030|m68881|m68851, m68020_ctrl, "68030", 0},
510 {m68040, m68040_ctrl, "68040", 0},
511 {m68060, m68060_ctrl, "68060", 0},
512 {cpu32|m68881, cpu32_ctrl, "cpu32", 0},
513 {fido_a, fido_ctrl, "fidoa", 0},
514 {mcfisa_a|mcfhwdiv, NULL, "isaa", 0},
515 {mcfisa_a|mcfhwdiv|mcfisa_aa|mcfusp, NULL, "isaaplus", 0},
516 {mcfisa_a|mcfhwdiv|mcfisa_b|mcfusp, NULL, "isab", 0},
517 {mcfisa_a|mcfhwdiv|mcfisa_c|mcfusp, NULL, "isac", 0},
518 {mcfisa_a|mcfhwdiv|mcfisa_b|mcfmac|mcfusp, mcf_ctrl, "cfv4", 0},
519 {mcfisa_a|mcfhwdiv|mcfisa_b|mcfemac|mcfusp|cfloat, mcfv4e_ctrl, "cfv4e", 0},
520 {0,0,NULL, 0}
521 };
522
523 /* Architecture extensions, here 'alias' -1 for m68k, +1 for cf and 0
524 for either. */
525 static const struct m68k_cpu m68k_extensions[] =
526 {
527 {m68851, NULL, "68851", -1},
528 {m68881, NULL, "68881", -1},
529 {m68881, NULL, "68882", -1},
530
531 {cfloat|m68881, NULL, "float", 0},
532
533 {mcfhwdiv, NULL, "div", 1},
534 {mcfusp, NULL, "usp", 1},
535 {mcfmac, NULL, "mac", 1},
536 {mcfemac, NULL, "emac", 1},
537
538 {0,NULL,NULL, 0}
539 };
540
541 /* Processor list */
542 static const struct m68k_cpu m68k_cpus[] =
543 {
544 {m68000, m68000_ctrl, "68000", 0},
545 {m68000, m68000_ctrl, "68ec000", 1},
546 {m68000, m68000_ctrl, "68hc000", 1},
547 {m68000, m68000_ctrl, "68hc001", 1},
548 {m68000, m68000_ctrl, "68008", 1},
549 {m68000, m68000_ctrl, "68302", 1},
550 {m68000, m68000_ctrl, "68306", 1},
551 {m68000, m68000_ctrl, "68307", 1},
552 {m68000, m68000_ctrl, "68322", 1},
553 {m68000, m68000_ctrl, "68356", 1},
554 {m68010, m68010_ctrl, "68010", 0},
555 {m68020|m68881|m68851, m68020_ctrl, "68020", 0},
556 {m68020|m68881|m68851, m68020_ctrl, "68k", 1},
557 {m68020|m68881|m68851, m68020_ctrl, "68ec020", 1},
558 {m68030|m68881|m68851, m68020_ctrl, "68030", 0},
559 {m68030|m68881|m68851, m68020_ctrl, "68ec030", 1},
560 {m68040, m68040_ctrl, "68040", 0},
561 {m68040, m68040_ctrl, "68ec040", 1},
562 {m68060, m68060_ctrl, "68060", 0},
563 {m68060, m68060_ctrl, "68ec060", 1},
564
565 {cpu32|m68881, cpu32_ctrl, "cpu32", 0},
566 {cpu32|m68881, cpu32_ctrl, "68330", 1},
567 {cpu32|m68881, cpu32_ctrl, "68331", 1},
568 {cpu32|m68881, cpu32_ctrl, "68332", 1},
569 {cpu32|m68881, cpu32_ctrl, "68333", 1},
570 {cpu32|m68881, cpu32_ctrl, "68334", 1},
571 {cpu32|m68881, cpu32_ctrl, "68336", 1},
572 {cpu32|m68881, cpu32_ctrl, "68340", 1},
573 {cpu32|m68881, cpu32_ctrl, "68341", 1},
574 {cpu32|m68881, cpu32_ctrl, "68349", 1},
575 {cpu32|m68881, cpu32_ctrl, "68360", 1},
576
577 {mcfisa_a|mcfisa_c|mcfusp, mcf51qe_ctrl, "51qe", 0},
578
579 {mcfisa_a, mcf_ctrl, "5200", 0},
580 {mcfisa_a, mcf_ctrl, "5202", 1},
581 {mcfisa_a, mcf_ctrl, "5204", 1},
582 {mcfisa_a, mcf5206_ctrl, "5206", 1},
583
584 {mcfisa_a|mcfhwdiv|mcfmac, mcf5206_ctrl, "5206e", 0},
585
586 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5208_ctrl, "5207", -1},
587 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5208_ctrl, "5208", 0},
588
589 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5210a_ctrl, "5210a", 0},
590 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5210a_ctrl, "5211a", 1},
591
592 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5213_ctrl, "5211", -1},
593 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5213_ctrl, "5212", -1},
594 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5213_ctrl, "5213", 0},
595
596 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5216_ctrl, "5214", -1},
597 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5216_ctrl, "5216", 0},
598 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5216_ctrl, "521x", 2},
599
600 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf52223_ctrl, "52221", -1},
601 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf52223_ctrl, "52223", 0},
602
603 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52235_ctrl, "52230", -1},
604 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52235_ctrl, "52233", -1},
605 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52235_ctrl, "52234", -1},
606 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf52235_ctrl, "52235", 0},
607
608 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5225_ctrl, "5224", -1},
609 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfmac|mcfusp, mcf5225_ctrl, "5225", 0},
610
611 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "5232", -1},
612 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "5233", -1},
613 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "5234", -1},
614 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "5235", -1},
615 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5235_ctrl, "523x", 0},
616
617 {mcfisa_a|mcfhwdiv|mcfemac, mcf5249_ctrl, "5249", 0},
618 {mcfisa_a|mcfhwdiv|mcfemac, mcf5250_ctrl, "5250", 0},
619 {mcfisa_a|mcfhwdiv|mcfemac, mcf5253_ctrl, "5253", 0},
620
621 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5271_ctrl, "5270", -1},
622 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5271_ctrl, "5271", 0},
623
624 {mcfisa_a|mcfhwdiv|mcfmac, mcf5272_ctrl, "5272", 0},
625
626 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5275_ctrl, "5274", -1},
627 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5275_ctrl, "5275", 0},
628
629 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5282_ctrl, "5280", -1},
630 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5282_ctrl, "5281", -1},
631 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5282_ctrl, "5282", -1},
632 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5282_ctrl, "528x", 0},
633
634 {mcfisa_a|mcfhwdiv|mcfmac, mcf5307_ctrl, "5307", 0},
635
636 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5329_ctrl, "5327", -1},
637 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5329_ctrl, "5328", -1},
638 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5329_ctrl, "5329", -1},
639 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5329_ctrl, "532x", 0},
640
641 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5373_ctrl, "5372", -1},
642 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5373_ctrl, "5373", -1},
643 {mcfisa_a|mcfisa_aa|mcfhwdiv|mcfemac|mcfusp, mcf5373_ctrl, "537x", 0},
644
645 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfmac, mcf5407_ctrl, "5407",0},
646
647 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54450", -1},
648 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54451", -1},
649 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54452", -1},
650 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54453", -1},
651 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54454", -1},
652 {mcfisa_a|mcfisa_c|mcfhwdiv|mcfemac|mcfusp, mcf54455_ctrl, "54455", 0},
653
654 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5470", -1},
655 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5471", -1},
656 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5472", -1},
657 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5473", -1},
658 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5474", -1},
659 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "5475", -1},
660 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5475_ctrl, "547x", 0},
661
662 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5480", -1},
663 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5481", -1},
664 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5482", -1},
665 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5483", -1},
666 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5484", -1},
667 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "5485", -1},
668 {mcfisa_a|mcfisa_b|mcfhwdiv|mcfemac|mcfusp|cfloat, mcf5485_ctrl, "548x", 0},
669
670 {fido_a, fido_ctrl, "fidoa", 0},
671 {fido_a, fido_ctrl, "fido", 1},
672
673 {0,NULL,NULL, 0}
674 };
675
676 static const struct m68k_cpu *m68k_lookup_cpu
677 (const char *, const struct m68k_cpu *, int, int *);
678 static int m68k_set_arch (const char *, int, int);
679 static int m68k_set_cpu (const char *, int, int);
680 static int m68k_set_extension (const char *, int, int);
681 static void m68k_init_arch (void);
682
683 /* This is the assembler relaxation table for m68k. m68k is a rich CISC
684 architecture and we have a lot of relaxation modes. */
685
686 /* Macros used in the relaxation code. */
687 #define TAB(x,y) (((x) << 2) + (y))
688 #define TABTYPE(x) ((x) >> 2)
689
690 /* Relaxation states. */
691 #define BYTE 0
692 #define SHORT 1
693 #define LONG 2
694 #define SZ_UNDEF 3
695
696 /* Here are all the relaxation modes we support. First we can relax ordinary
697 branches. On 68020 and higher and on CPU32 all branch instructions take
698 three forms, so on these CPUs all branches always remain as such. When we
699 have to expand to the LONG form on a 68000, though, we substitute an
700 absolute jump instead. This is a direct replacement for unconditional
701 branches and a branch over a jump for conditional branches. However, if the
702 user requires PIC and disables this with --pcrel, we can only relax between
703 BYTE and SHORT forms, punting if that isn't enough. This gives us four
704 different relaxation modes for branches: */
705
706 #define BRANCHBWL 0 /* Branch byte, word, or long. */
707 #define BRABSJUNC 1 /* Absolute jump for LONG, unconditional. */
708 #define BRABSJCOND 2 /* Absolute jump for LONG, conditional. */
709 #define BRANCHBW 3 /* Branch byte or word. */
710
711 /* We also relax coprocessor branches and DBcc's. All CPUs that support
712 coprocessor branches support them in word and long forms, so we have only
713 one relaxation mode for them. DBcc's are word only on all CPUs. We can
714 relax them to the LONG form with a branch-around sequence. This sequence
715 can use a long branch (if available) or an absolute jump (if acceptable).
716 This gives us two relaxation modes. If long branches are not available and
717 absolute jumps are not acceptable, we don't relax DBcc's. */
718
719 #define FBRANCH 4 /* Coprocessor branch. */
720 #define DBCCLBR 5 /* DBcc relaxable with a long branch. */
721 #define DBCCABSJ 6 /* DBcc relaxable with an absolute jump. */
722
723 /* That's all for instruction relaxation. However, we also relax PC-relative
724 operands. Specifically, we have three operand relaxation modes. On the
725 68000 PC-relative operands can only be 16-bit, but on 68020 and higher and
726 on CPU32 they may be 16-bit or 32-bit. For the latter we relax between the
727 two. Also PC+displacement+index operands in their simple form (with a non-
728 suppressed index without memory indirection) are supported on all CPUs, but
729 on the 68000 the displacement can be 8-bit only, whereas on 68020 and higher
730 and on CPU32 we relax it to SHORT and LONG forms as well using the extended
731 form of the PC+displacement+index operand. Finally, some absolute operands
732 can be relaxed down to 16-bit PC-relative. */
733
734 #define PCREL1632 7 /* 16-bit or 32-bit PC-relative. */
735 #define PCINDEX 8 /* PC + displacement + index. */
736 #define ABSTOPCREL 9 /* Absolute relax down to 16-bit PC-relative. */
737
738 /* This relaxation is required for branches where there is no long
739 branch and we are in pcrel mode. We generate a bne/beq pair. */
740 #define BRANCHBWPL 10 /* Branch byte, word or pair of longs
741 */
742
743 /* Note that calls to frag_var need to specify the maximum expansion
744 needed; this is currently 12 bytes for bne/beq pair. */
745 #define FRAG_VAR_SIZE 12
746
747 /* The fields are:
748 How far Forward this mode will reach:
749 How far Backward this mode will reach:
750 How many bytes this mode will add to the size of the frag
751 Which mode to go to if the offset won't fit in this one
752
753 Please check tc-m68k.h:md_prepare_relax_scan if changing this table. */
754 relax_typeS md_relax_table[] =
755 {
756 { 127, -128, 0, TAB (BRANCHBWL, SHORT) },
757 { 32767, -32768, 2, TAB (BRANCHBWL, LONG) },
758 { 0, 0, 4, 0 },
759 { 1, 1, 0, 0 },
760
761 { 127, -128, 0, TAB (BRABSJUNC, SHORT) },
762 { 32767, -32768, 2, TAB (BRABSJUNC, LONG) },
763 { 0, 0, 4, 0 },
764 { 1, 1, 0, 0 },
765
766 { 127, -128, 0, TAB (BRABSJCOND, SHORT) },
767 { 32767, -32768, 2, TAB (BRABSJCOND, LONG) },
768 { 0, 0, 6, 0 },
769 { 1, 1, 0, 0 },
770
771 { 127, -128, 0, TAB (BRANCHBW, SHORT) },
772 { 0, 0, 2, 0 },
773 { 1, 1, 0, 0 },
774 { 1, 1, 0, 0 },
775
776 { 1, 1, 0, 0 }, /* FBRANCH doesn't come BYTE. */
777 { 32767, -32768, 2, TAB (FBRANCH, LONG) },
778 { 0, 0, 4, 0 },
779 { 1, 1, 0, 0 },
780
781 { 1, 1, 0, 0 }, /* DBCC doesn't come BYTE. */
782 { 32767, -32768, 2, TAB (DBCCLBR, LONG) },
783 { 0, 0, 10, 0 },
784 { 1, 1, 0, 0 },
785
786 { 1, 1, 0, 0 }, /* DBCC doesn't come BYTE. */
787 { 32767, -32768, 2, TAB (DBCCABSJ, LONG) },
788 { 0, 0, 10, 0 },
789 { 1, 1, 0, 0 },
790
791 { 1, 1, 0, 0 }, /* PCREL1632 doesn't come BYTE. */
792 { 32767, -32768, 2, TAB (PCREL1632, LONG) },
793 { 0, 0, 6, 0 },
794 { 1, 1, 0, 0 },
795
796 { 125, -130, 0, TAB (PCINDEX, SHORT) },
797 { 32765, -32770, 2, TAB (PCINDEX, LONG) },
798 { 0, 0, 4, 0 },
799 { 1, 1, 0, 0 },
800
801 { 1, 1, 0, 0 }, /* ABSTOPCREL doesn't come BYTE. */
802 { 32767, -32768, 2, TAB (ABSTOPCREL, LONG) },
803 { 0, 0, 4, 0 },
804 { 1, 1, 0, 0 },
805
806 { 127, -128, 0, TAB (BRANCHBWPL, SHORT) },
807 { 32767, -32768, 2, TAB (BRANCHBWPL, LONG) },
808 { 0, 0, 10, 0 },
809 { 1, 1, 0, 0 },
810 };
811
812 /* These are the machine dependent pseudo-ops. These are included so
813 the assembler can work on the output from the SUN C compiler, which
814 generates these. */
815
816 /* This table describes all the machine specific pseudo-ops the assembler
817 has to support. The fields are:
818 pseudo-op name without dot
819 function to call to execute this pseudo-op
820 Integer arg to pass to the function. */
821 const pseudo_typeS md_pseudo_table[] =
822 {
823 {"data1", s_data1, 0},
824 {"data2", s_data2, 0},
825 {"bss", s_bss, 0},
826 {"even", s_even, 0},
827 {"skip", s_space, 0},
828 {"proc", s_proc, 0},
829 #if defined (TE_SUN3) || defined (OBJ_ELF)
830 {"align", s_align_bytes, 0},
831 #endif
832 #ifdef OBJ_ELF
833 {"swbeg", s_ignore, 0},
834 #endif
835 {"extend", float_cons, 'x'},
836 {"ldouble", float_cons, 'x'},
837
838 {"arch", s_m68k_arch, 0},
839 {"cpu", s_m68k_cpu, 0},
840
841 /* The following pseudo-ops are supported for MRI compatibility. */
842 {"chip", s_chip, 0},
843 {"comline", s_space, 1},
844 {"fopt", s_fopt, 0},
845 {"mask2", s_ignore, 0},
846 {"opt", s_opt, 0},
847 {"reg", s_reg, 0},
848 {"restore", s_restore, 0},
849 {"save", s_save, 0},
850
851 {"if", s_mri_if, 0},
852 {"if.b", s_mri_if, 'b'},
853 {"if.w", s_mri_if, 'w'},
854 {"if.l", s_mri_if, 'l'},
855 {"else", s_mri_else, 0},
856 {"else.s", s_mri_else, 's'},
857 {"else.l", s_mri_else, 'l'},
858 {"endi", s_mri_endi, 0},
859 {"break", s_mri_break, 0},
860 {"break.s", s_mri_break, 's'},
861 {"break.l", s_mri_break, 'l'},
862 {"next", s_mri_next, 0},
863 {"next.s", s_mri_next, 's'},
864 {"next.l", s_mri_next, 'l'},
865 {"for", s_mri_for, 0},
866 {"for.b", s_mri_for, 'b'},
867 {"for.w", s_mri_for, 'w'},
868 {"for.l", s_mri_for, 'l'},
869 {"endf", s_mri_endf, 0},
870 {"repeat", s_mri_repeat, 0},
871 {"until", s_mri_until, 0},
872 {"until.b", s_mri_until, 'b'},
873 {"until.w", s_mri_until, 'w'},
874 {"until.l", s_mri_until, 'l'},
875 {"while", s_mri_while, 0},
876 {"while.b", s_mri_while, 'b'},
877 {"while.w", s_mri_while, 'w'},
878 {"while.l", s_mri_while, 'l'},
879 {"endw", s_mri_endw, 0},
880
881 {0, 0, 0}
882 };
883
884 /* The mote pseudo ops are put into the opcode table, since they
885 don't start with a . they look like opcodes to gas. */
886
887 const pseudo_typeS mote_pseudo_table[] =
888 {
889
890 {"dcl", cons, 4},
891 {"dc", cons, 2},
892 {"dcw", cons, 2},
893 {"dcb", cons, 1},
894
895 {"dsl", s_space, 4},
896 {"ds", s_space, 2},
897 {"dsw", s_space, 2},
898 {"dsb", s_space, 1},
899
900 {"xdef", s_globl, 0},
901 #ifdef OBJ_ELF
902 {"align", s_align_bytes, 0},
903 #else
904 {"align", s_align_ptwo, 0},
905 #endif
906 #ifdef M68KCOFF
907 {"sect", obj_coff_section, 0},
908 {"section", obj_coff_section, 0},
909 #endif
910 {0, 0, 0}
911 };
912
913 /* Truncate and sign-extend at 32 bits, so that building on a 64-bit host
914 gives identical results to a 32-bit host. */
915 #define TRUNC(X) ((valueT) (X) & 0xffffffff)
916 #define SEXT(X) ((TRUNC (X) ^ 0x80000000) - 0x80000000)
917
918 #define issbyte(x) ((valueT) SEXT (x) + 0x80 < 0x100)
919 #define isubyte(x) ((valueT) TRUNC (x) < 0x100)
920 #define issword(x) ((valueT) SEXT (x) + 0x8000 < 0x10000)
921 #define isuword(x) ((valueT) TRUNC (x) < 0x10000)
922
923 #define isbyte(x) ((valueT) SEXT (x) + 0xff < 0x1ff)
924 #define isword(x) ((valueT) SEXT (x) + 0xffff < 0x1ffff)
925 #define islong(x) (1)
926
927 static char notend_table[256];
928 static char alt_notend_table[256];
929 #define notend(s) \
930 (! (notend_table[(unsigned char) *s] \
931 || (*s == ':' \
932 && alt_notend_table[(unsigned char) s[1]])))
933
934 #ifdef OBJ_ELF
935
936 /* Return zero if the reference to SYMBOL from within the same segment may
937 be relaxed. */
938
939 /* On an ELF system, we can't relax an externally visible symbol,
940 because it may be overridden by a shared library. However, if
941 TARGET_OS is "elf", then we presume that we are assembling for an
942 embedded system, in which case we don't have to worry about shared
943 libraries, and we can relax any external sym. */
944
945 #define relaxable_symbol(symbol) \
946 (!((S_IS_EXTERNAL (symbol) && EXTERN_FORCE_RELOC) \
947 || S_IS_WEAK (symbol)))
948
949 /* Compute the relocation code for a fixup of SIZE bytes, using pc
950 relative relocation if PCREL is non-zero. PIC says whether a special
951 pic relocation was requested. */
952
953 static bfd_reloc_code_real_type
954 get_reloc_code (int size, int pcrel, enum pic_relocation pic)
955 {
956 switch (pic)
957 {
958 case pic_got_pcrel:
959 switch (size)
960 {
961 case 1:
962 return BFD_RELOC_8_GOT_PCREL;
963 case 2:
964 return BFD_RELOC_16_GOT_PCREL;
965 case 4:
966 return BFD_RELOC_32_GOT_PCREL;
967 }
968 break;
969
970 case pic_got_off:
971 switch (size)
972 {
973 case 1:
974 return BFD_RELOC_8_GOTOFF;
975 case 2:
976 return BFD_RELOC_16_GOTOFF;
977 case 4:
978 return BFD_RELOC_32_GOTOFF;
979 }
980 break;
981
982 case pic_plt_pcrel:
983 switch (size)
984 {
985 case 1:
986 return BFD_RELOC_8_PLT_PCREL;
987 case 2:
988 return BFD_RELOC_16_PLT_PCREL;
989 case 4:
990 return BFD_RELOC_32_PLT_PCREL;
991 }
992 break;
993
994 case pic_plt_off:
995 switch (size)
996 {
997 case 1:
998 return BFD_RELOC_8_PLTOFF;
999 case 2:
1000 return BFD_RELOC_16_PLTOFF;
1001 case 4:
1002 return BFD_RELOC_32_PLTOFF;
1003 }
1004 break;
1005
1006 case pic_none:
1007 if (pcrel)
1008 {
1009 switch (size)
1010 {
1011 case 1:
1012 return BFD_RELOC_8_PCREL;
1013 case 2:
1014 return BFD_RELOC_16_PCREL;
1015 case 4:
1016 return BFD_RELOC_32_PCREL;
1017 }
1018 }
1019 else
1020 {
1021 switch (size)
1022 {
1023 case 1:
1024 return BFD_RELOC_8;
1025 case 2:
1026 return BFD_RELOC_16;
1027 case 4:
1028 return BFD_RELOC_32;
1029 }
1030 }
1031 }
1032
1033 if (pcrel)
1034 {
1035 if (pic == pic_none)
1036 as_bad (_("Can not do %d byte pc-relative relocation"), size);
1037 else
1038 as_bad (_("Can not do %d byte pc-relative pic relocation"), size);
1039 }
1040 else
1041 {
1042 if (pic == pic_none)
1043 as_bad (_("Can not do %d byte relocation"), size);
1044 else
1045 as_bad (_("Can not do %d byte pic relocation"), size);
1046 }
1047
1048 return BFD_RELOC_NONE;
1049 }
1050
1051 /* Here we decide which fixups can be adjusted to make them relative
1052 to the beginning of the section instead of the symbol. Basically
1053 we need to make sure that the dynamic relocations are done
1054 correctly, so in some cases we force the original symbol to be
1055 used. */
1056 int
1057 tc_m68k_fix_adjustable (fixS *fixP)
1058 {
1059 /* Adjust_reloc_syms doesn't know about the GOT. */
1060 switch (fixP->fx_r_type)
1061 {
1062 case BFD_RELOC_8_GOT_PCREL:
1063 case BFD_RELOC_16_GOT_PCREL:
1064 case BFD_RELOC_32_GOT_PCREL:
1065 case BFD_RELOC_8_GOTOFF:
1066 case BFD_RELOC_16_GOTOFF:
1067 case BFD_RELOC_32_GOTOFF:
1068 case BFD_RELOC_8_PLT_PCREL:
1069 case BFD_RELOC_16_PLT_PCREL:
1070 case BFD_RELOC_32_PLT_PCREL:
1071 case BFD_RELOC_8_PLTOFF:
1072 case BFD_RELOC_16_PLTOFF:
1073 case BFD_RELOC_32_PLTOFF:
1074 return 0;
1075
1076 case BFD_RELOC_VTABLE_INHERIT:
1077 case BFD_RELOC_VTABLE_ENTRY:
1078 return 0;
1079
1080 default:
1081 return 1;
1082 }
1083 }
1084
1085 #else /* !OBJ_ELF */
1086
1087 #define get_reloc_code(SIZE,PCREL,OTHER) NO_RELOC
1088
1089 /* PR gas/3041 Weak symbols are not relaxable
1090 because they must be treated as extern. */
1091 #define relaxable_symbol(symbol) (!(S_IS_WEAK (symbol)))
1092
1093 #endif /* OBJ_ELF */
1094
1095 arelent *
1096 tc_gen_reloc (asection *section ATTRIBUTE_UNUSED, fixS *fixp)
1097 {
1098 arelent *reloc;
1099 bfd_reloc_code_real_type code;
1100
1101 /* If the tcbit is set, then this was a fixup of a negative value
1102 that was never resolved. We do not have a reloc to handle this,
1103 so just return. We assume that other code will have detected this
1104 situation and produced a helpful error message, so we just tell the
1105 user that the reloc cannot be produced. */
1106 if (fixp->fx_tcbit)
1107 {
1108 if (fixp->fx_addsy)
1109 as_bad_where (fixp->fx_file, fixp->fx_line,
1110 _("Unable to produce reloc against symbol '%s'"),
1111 S_GET_NAME (fixp->fx_addsy));
1112 return NULL;
1113 }
1114
1115 if (fixp->fx_r_type != BFD_RELOC_NONE)
1116 {
1117 code = fixp->fx_r_type;
1118
1119 /* Since DIFF_EXPR_OK is defined in tc-m68k.h, it is possible
1120 that fixup_segment converted a non-PC relative reloc into a
1121 PC relative reloc. In such a case, we need to convert the
1122 reloc code. */
1123 if (fixp->fx_pcrel)
1124 {
1125 switch (code)
1126 {
1127 case BFD_RELOC_8:
1128 code = BFD_RELOC_8_PCREL;
1129 break;
1130 case BFD_RELOC_16:
1131 code = BFD_RELOC_16_PCREL;
1132 break;
1133 case BFD_RELOC_32:
1134 code = BFD_RELOC_32_PCREL;
1135 break;
1136 case BFD_RELOC_8_PCREL:
1137 case BFD_RELOC_16_PCREL:
1138 case BFD_RELOC_32_PCREL:
1139 case BFD_RELOC_8_GOT_PCREL:
1140 case BFD_RELOC_16_GOT_PCREL:
1141 case BFD_RELOC_32_GOT_PCREL:
1142 case BFD_RELOC_8_GOTOFF:
1143 case BFD_RELOC_16_GOTOFF:
1144 case BFD_RELOC_32_GOTOFF:
1145 case BFD_RELOC_8_PLT_PCREL:
1146 case BFD_RELOC_16_PLT_PCREL:
1147 case BFD_RELOC_32_PLT_PCREL:
1148 case BFD_RELOC_8_PLTOFF:
1149 case BFD_RELOC_16_PLTOFF:
1150 case BFD_RELOC_32_PLTOFF:
1151 break;
1152 default:
1153 as_bad_where (fixp->fx_file, fixp->fx_line,
1154 _("Cannot make %s relocation PC relative"),
1155 bfd_get_reloc_code_name (code));
1156 }
1157 }
1158 }
1159 else
1160 {
1161 #define F(SZ,PCREL) (((SZ) << 1) + (PCREL))
1162 switch (F (fixp->fx_size, fixp->fx_pcrel))
1163 {
1164 #define MAP(SZ,PCREL,TYPE) case F(SZ,PCREL): code = (TYPE); break
1165 MAP (1, 0, BFD_RELOC_8);
1166 MAP (2, 0, BFD_RELOC_16);
1167 MAP (4, 0, BFD_RELOC_32);
1168 MAP (1, 1, BFD_RELOC_8_PCREL);
1169 MAP (2, 1, BFD_RELOC_16_PCREL);
1170 MAP (4, 1, BFD_RELOC_32_PCREL);
1171 default:
1172 abort ();
1173 }
1174 }
1175 #undef F
1176 #undef MAP
1177
1178 reloc = (arelent *) xmalloc (sizeof (arelent));
1179 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
1180 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
1181 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
1182 #ifndef OBJ_ELF
1183 if (fixp->fx_pcrel)
1184 reloc->addend = fixp->fx_addnumber;
1185 else if (OUTPUT_FLAVOR == bfd_target_aout_flavour
1186 && fixp->fx_addsy
1187 && S_IS_WEAK (fixp->fx_addsy)
1188 && ! bfd_is_und_section (S_GET_SEGMENT (fixp->fx_addsy)))
1189 /* PR gas/3041 Adjust addend in order to force bfd_install_relocation()
1190 to put the symbol offset into frags referencing a weak symbol. */
1191 reloc->addend = fixp->fx_addnumber
1192 - (S_GET_VALUE (fixp->fx_addsy) * 2);
1193 else
1194 reloc->addend = 0;
1195 #else
1196 if (!fixp->fx_pcrel)
1197 reloc->addend = fixp->fx_addnumber;
1198 else
1199 reloc->addend = (section->vma
1200 /* Explicit sign extension in case char is
1201 unsigned. */
1202 + ((fixp->fx_pcrel_adjust & 0xff) ^ 0x80) - 0x80
1203 + fixp->fx_addnumber
1204 + md_pcrel_from (fixp));
1205 #endif
1206
1207 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
1208 assert (reloc->howto != 0);
1209
1210 return reloc;
1211 }
1212
1213 /* Handle of the OPCODE hash table. NULL means any use before
1214 m68k_ip_begin() will crash. */
1215 static struct hash_control *op_hash;
1216 \f
1217 /* Assemble an m68k instruction. */
1218
1219 static void
1220 m68k_ip (char *instring)
1221 {
1222 register char *p;
1223 register struct m68k_op *opP;
1224 register const struct m68k_incant *opcode;
1225 register const char *s;
1226 register int tmpreg = 0, baseo = 0, outro = 0, nextword;
1227 char *pdot, *pdotmove;
1228 enum m68k_size siz1, siz2;
1229 char c;
1230 int losing;
1231 int opsfound;
1232 struct m68k_op operands_backup[6];
1233 LITTLENUM_TYPE words[6];
1234 LITTLENUM_TYPE *wordp;
1235 unsigned long ok_arch = 0;
1236
1237 if (*instring == ' ')
1238 instring++; /* Skip leading whitespace. */
1239
1240 /* Scan up to end of operation-code, which MUST end in end-of-string
1241 or exactly 1 space. */
1242 pdot = 0;
1243 for (p = instring; *p != '\0'; p++)
1244 {
1245 if (*p == ' ')
1246 break;
1247 if (*p == '.')
1248 pdot = p;
1249 }
1250
1251 if (p == instring)
1252 {
1253 the_ins.error = _("No operator");
1254 return;
1255 }
1256
1257 /* p now points to the end of the opcode name, probably whitespace.
1258 Make sure the name is null terminated by clobbering the
1259 whitespace, look it up in the hash table, then fix it back.
1260 Remove a dot, first, since the opcode tables have none. */
1261 if (pdot != NULL)
1262 {
1263 for (pdotmove = pdot; pdotmove < p; pdotmove++)
1264 *pdotmove = pdotmove[1];
1265 p--;
1266 }
1267
1268 c = *p;
1269 *p = '\0';
1270 opcode = (const struct m68k_incant *) hash_find (op_hash, instring);
1271 *p = c;
1272
1273 if (pdot != NULL)
1274 {
1275 for (pdotmove = p; pdotmove > pdot; pdotmove--)
1276 *pdotmove = pdotmove[-1];
1277 *pdot = '.';
1278 ++p;
1279 }
1280
1281 if (opcode == NULL)
1282 {
1283 the_ins.error = _("Unknown operator");
1284 return;
1285 }
1286
1287 /* Found a legitimate opcode, start matching operands. */
1288 while (*p == ' ')
1289 ++p;
1290
1291 if (opcode->m_operands == 0)
1292 {
1293 char *old = input_line_pointer;
1294 *old = '\n';
1295 input_line_pointer = p;
1296 /* Ahh - it's a motorola style psuedo op. */
1297 mote_pseudo_table[opcode->m_opnum].poc_handler
1298 (mote_pseudo_table[opcode->m_opnum].poc_val);
1299 input_line_pointer = old;
1300 *old = 0;
1301
1302 return;
1303 }
1304
1305 if (flag_mri && opcode->m_opnum == 0)
1306 {
1307 /* In MRI mode, random garbage is allowed after an instruction
1308 which accepts no operands. */
1309 the_ins.args = opcode->m_operands;
1310 the_ins.numargs = opcode->m_opnum;
1311 the_ins.numo = opcode->m_codenum;
1312 the_ins.opcode[0] = getone (opcode);
1313 the_ins.opcode[1] = gettwo (opcode);
1314 return;
1315 }
1316
1317 for (opP = &the_ins.operands[0]; *p; opP++)
1318 {
1319 p = crack_operand (p, opP);
1320
1321 if (opP->error)
1322 {
1323 the_ins.error = opP->error;
1324 return;
1325 }
1326 }
1327
1328 opsfound = opP - &the_ins.operands[0];
1329
1330 /* This ugly hack is to support the floating pt opcodes in their
1331 standard form. Essentially, we fake a first enty of type COP#1 */
1332 if (opcode->m_operands[0] == 'I')
1333 {
1334 int n;
1335
1336 for (n = opsfound; n > 0; --n)
1337 the_ins.operands[n] = the_ins.operands[n - 1];
1338
1339 memset (&the_ins.operands[0], '\0', sizeof (the_ins.operands[0]));
1340 the_ins.operands[0].mode = CONTROL;
1341 the_ins.operands[0].reg = m68k_float_copnum;
1342 opsfound++;
1343 }
1344
1345 /* We've got the operands. Find an opcode that'll accept them. */
1346 for (losing = 0;;)
1347 {
1348 /* If we didn't get the right number of ops, or we have no
1349 common model with this pattern then reject this pattern. */
1350
1351 ok_arch |= opcode->m_arch;
1352 if (opsfound != opcode->m_opnum
1353 || ((opcode->m_arch & current_architecture) == 0))
1354 ++losing;
1355 else
1356 {
1357 int i;
1358
1359 /* Make a copy of the operands of this insn so that
1360 we can modify them safely, should we want to. */
1361 assert (opsfound <= (int) ARRAY_SIZE (operands_backup));
1362 for (i = 0; i < opsfound; i++)
1363 operands_backup[i] = the_ins.operands[i];
1364
1365 for (s = opcode->m_operands, opP = &operands_backup[0];
1366 *s && !losing;
1367 s += 2, opP++)
1368 {
1369 /* Warning: this switch is huge! */
1370 /* I've tried to organize the cases into this order:
1371 non-alpha first, then alpha by letter. Lower-case
1372 goes directly before uppercase counterpart. */
1373 /* Code with multiple case ...: gets sorted by the lowest
1374 case ... it belongs to. I hope this makes sense. */
1375 switch (*s)
1376 {
1377 case '!':
1378 switch (opP->mode)
1379 {
1380 case IMMED:
1381 case DREG:
1382 case AREG:
1383 case FPREG:
1384 case CONTROL:
1385 case AINC:
1386 case ADEC:
1387 case REGLST:
1388 losing++;
1389 break;
1390 default:
1391 break;
1392 }
1393 break;
1394
1395 case '<':
1396 switch (opP->mode)
1397 {
1398 case DREG:
1399 case AREG:
1400 case FPREG:
1401 case CONTROL:
1402 case IMMED:
1403 case ADEC:
1404 case REGLST:
1405 losing++;
1406 break;
1407 default:
1408 break;
1409 }
1410 break;
1411
1412 case '>':
1413 switch (opP->mode)
1414 {
1415 case DREG:
1416 case AREG:
1417 case FPREG:
1418 case CONTROL:
1419 case IMMED:
1420 case AINC:
1421 case REGLST:
1422 losing++;
1423 break;
1424 case ABSL:
1425 break;
1426 default:
1427 if (opP->reg == PC
1428 || opP->reg == ZPC)
1429 losing++;
1430 break;
1431 }
1432 break;
1433
1434 case 'm':
1435 switch (opP->mode)
1436 {
1437 case DREG:
1438 case AREG:
1439 case AINDR:
1440 case AINC:
1441 case ADEC:
1442 break;
1443 default:
1444 losing++;
1445 }
1446 break;
1447
1448 case 'n':
1449 switch (opP->mode)
1450 {
1451 case DISP:
1452 break;
1453 default:
1454 losing++;
1455 }
1456 break;
1457
1458 case 'o':
1459 switch (opP->mode)
1460 {
1461 case BASE:
1462 case ABSL:
1463 case IMMED:
1464 break;
1465 default:
1466 losing++;
1467 }
1468 break;
1469
1470 case 'p':
1471 switch (opP->mode)
1472 {
1473 case DREG:
1474 case AREG:
1475 case AINDR:
1476 case AINC:
1477 case ADEC:
1478 break;
1479 case DISP:
1480 if (opP->reg == PC || opP->reg == ZPC)
1481 losing++;
1482 break;
1483 default:
1484 losing++;
1485 }
1486 break;
1487
1488 case 'q':
1489 switch (opP->mode)
1490 {
1491 case DREG:
1492 case AINDR:
1493 case AINC:
1494 case ADEC:
1495 break;
1496 case DISP:
1497 if (opP->reg == PC || opP->reg == ZPC)
1498 losing++;
1499 break;
1500 default:
1501 losing++;
1502 break;
1503 }
1504 break;
1505
1506 case 'v':
1507 switch (opP->mode)
1508 {
1509 case DREG:
1510 case AINDR:
1511 case AINC:
1512 case ADEC:
1513 case ABSL:
1514 break;
1515 case DISP:
1516 if (opP->reg == PC || opP->reg == ZPC)
1517 losing++;
1518 break;
1519 default:
1520 losing++;
1521 break;
1522 }
1523 break;
1524
1525 case '#':
1526 if (opP->mode != IMMED)
1527 losing++;
1528 else if (s[1] == 'b'
1529 && ! isvar (&opP->disp)
1530 && (opP->disp.exp.X_op != O_constant
1531 || ! isbyte (opP->disp.exp.X_add_number)))
1532 losing++;
1533 else if (s[1] == 'B'
1534 && ! isvar (&opP->disp)
1535 && (opP->disp.exp.X_op != O_constant
1536 || ! issbyte (opP->disp.exp.X_add_number)))
1537 losing++;
1538 else if (s[1] == 'w'
1539 && ! isvar (&opP->disp)
1540 && (opP->disp.exp.X_op != O_constant
1541 || ! isword (opP->disp.exp.X_add_number)))
1542 losing++;
1543 else if (s[1] == 'W'
1544 && ! isvar (&opP->disp)
1545 && (opP->disp.exp.X_op != O_constant
1546 || ! issword (opP->disp.exp.X_add_number)))
1547 losing++;
1548 break;
1549
1550 case '^':
1551 case 'T':
1552 if (opP->mode != IMMED)
1553 losing++;
1554 break;
1555
1556 case '$':
1557 if (opP->mode == AREG
1558 || opP->mode == CONTROL
1559 || opP->mode == FPREG
1560 || opP->mode == IMMED
1561 || opP->mode == REGLST
1562 || (opP->mode != ABSL
1563 && (opP->reg == PC
1564 || opP->reg == ZPC)))
1565 losing++;
1566 break;
1567
1568 case '%':
1569 if (opP->mode == CONTROL
1570 || opP->mode == FPREG
1571 || opP->mode == REGLST
1572 || opP->mode == IMMED
1573 || (opP->mode != ABSL
1574 && (opP->reg == PC
1575 || opP->reg == ZPC)))
1576 losing++;
1577 break;
1578
1579 case '&':
1580 switch (opP->mode)
1581 {
1582 case DREG:
1583 case AREG:
1584 case FPREG:
1585 case CONTROL:
1586 case IMMED:
1587 case AINC:
1588 case ADEC:
1589 case REGLST:
1590 losing++;
1591 break;
1592 case ABSL:
1593 break;
1594 default:
1595 if (opP->reg == PC
1596 || opP->reg == ZPC)
1597 losing++;
1598 break;
1599 }
1600 break;
1601
1602 case '*':
1603 if (opP->mode == CONTROL
1604 || opP->mode == FPREG
1605 || opP->mode == REGLST)
1606 losing++;
1607 break;
1608
1609 case '+':
1610 if (opP->mode != AINC)
1611 losing++;
1612 break;
1613
1614 case '-':
1615 if (opP->mode != ADEC)
1616 losing++;
1617 break;
1618
1619 case '/':
1620 switch (opP->mode)
1621 {
1622 case AREG:
1623 case CONTROL:
1624 case FPREG:
1625 case AINC:
1626 case ADEC:
1627 case IMMED:
1628 case REGLST:
1629 losing++;
1630 break;
1631 default:
1632 break;
1633 }
1634 break;
1635
1636 case ';':
1637 switch (opP->mode)
1638 {
1639 case AREG:
1640 case CONTROL:
1641 case FPREG:
1642 case REGLST:
1643 losing++;
1644 break;
1645 default:
1646 break;
1647 }
1648 break;
1649
1650 case '?':
1651 switch (opP->mode)
1652 {
1653 case AREG:
1654 case CONTROL:
1655 case FPREG:
1656 case AINC:
1657 case ADEC:
1658 case IMMED:
1659 case REGLST:
1660 losing++;
1661 break;
1662 case ABSL:
1663 break;
1664 default:
1665 if (opP->reg == PC || opP->reg == ZPC)
1666 losing++;
1667 break;
1668 }
1669 break;
1670
1671 case '@':
1672 switch (opP->mode)
1673 {
1674 case AREG:
1675 case CONTROL:
1676 case FPREG:
1677 case IMMED:
1678 case REGLST:
1679 losing++;
1680 break;
1681 default:
1682 break;
1683 }
1684 break;
1685
1686 case '~': /* For now! (JF FOO is this right?) */
1687 switch (opP->mode)
1688 {
1689 case DREG:
1690 case AREG:
1691 case CONTROL:
1692 case FPREG:
1693 case IMMED:
1694 case REGLST:
1695 losing++;
1696 break;
1697 case ABSL:
1698 break;
1699 default:
1700 if (opP->reg == PC
1701 || opP->reg == ZPC)
1702 losing++;
1703 break;
1704 }
1705 break;
1706
1707 case '3':
1708 if (opP->mode != CONTROL
1709 || (opP->reg != TT0 && opP->reg != TT1))
1710 losing++;
1711 break;
1712
1713 case 'A':
1714 if (opP->mode != AREG)
1715 losing++;
1716 break;
1717
1718 case 'a':
1719 if (opP->mode != AINDR)
1720 ++losing;
1721 break;
1722
1723 case '4':
1724 if (opP->mode != AINDR && opP->mode != AINC && opP->mode != ADEC
1725 && (opP->mode != DISP
1726 || opP->reg < ADDR0
1727 || opP->reg > ADDR7))
1728 ++losing;
1729 break;
1730
1731 case 'B': /* FOO */
1732 if (opP->mode != ABSL
1733 || (flag_long_jumps
1734 && strncmp (instring, "jbsr", 4) == 0))
1735 losing++;
1736 break;
1737
1738 case 'b':
1739 switch (opP->mode)
1740 {
1741 case IMMED:
1742 case ABSL:
1743 case AREG:
1744 case FPREG:
1745 case CONTROL:
1746 case POST:
1747 case PRE:
1748 case REGLST:
1749 losing++;
1750 break;
1751 default:
1752 break;
1753 }
1754 break;
1755
1756 case 'C':
1757 if (opP->mode != CONTROL || opP->reg != CCR)
1758 losing++;
1759 break;
1760
1761 case 'd':
1762 if (opP->mode != DISP
1763 || opP->reg < ADDR0
1764 || opP->reg > ADDR7)
1765 losing++;
1766 break;
1767
1768 case 'D':
1769 if (opP->mode != DREG)
1770 losing++;
1771 break;
1772
1773 case 'E':
1774 if (opP->reg != ACC)
1775 losing++;
1776 break;
1777
1778 case 'e':
1779 if (opP->reg != ACC && opP->reg != ACC1
1780 && opP->reg != ACC2 && opP->reg != ACC3)
1781 losing++;
1782 break;
1783
1784 case 'F':
1785 if (opP->mode != FPREG)
1786 losing++;
1787 break;
1788
1789 case 'G':
1790 if (opP->reg != MACSR)
1791 losing++;
1792 break;
1793
1794 case 'g':
1795 if (opP->reg != ACCEXT01 && opP->reg != ACCEXT23)
1796 losing++;
1797 break;
1798
1799 case 'H':
1800 if (opP->reg != MASK)
1801 losing++;
1802 break;
1803
1804 case 'I':
1805 if (opP->mode != CONTROL
1806 || opP->reg < COP0
1807 || opP->reg > COP7)
1808 losing++;
1809 break;
1810
1811 case 'i':
1812 if (opP->mode != LSH && opP->mode != RSH)
1813 losing++;
1814 break;
1815
1816 case 'J':
1817 if (opP->mode != CONTROL
1818 || opP->reg < USP
1819 || opP->reg > last_movec_reg
1820 || !control_regs)
1821 losing++;
1822 else
1823 {
1824 const enum m68k_register *rp;
1825
1826 for (rp = control_regs; *rp; rp++)
1827 {
1828 if (*rp == opP->reg)
1829 break;
1830 /* In most CPUs RAMBAR refers to control reg
1831 c05 (RAMBAR1), but a few CPUs have it
1832 refer to c04 (RAMBAR0). */
1833 else if (*rp == RAMBAR_ALT && opP->reg == RAMBAR)
1834 {
1835 opP->reg = RAMBAR_ALT;
1836 break;
1837 }
1838 }
1839 if (*rp == 0)
1840 losing++;
1841 }
1842 break;
1843
1844 case 'k':
1845 if (opP->mode != IMMED)
1846 losing++;
1847 break;
1848
1849 case 'l':
1850 case 'L':
1851 if (opP->mode == DREG
1852 || opP->mode == AREG
1853 || opP->mode == FPREG)
1854 {
1855 if (s[1] == '8')
1856 losing++;
1857 else
1858 {
1859 switch (opP->mode)
1860 {
1861 case DREG:
1862 opP->mask = 1 << (opP->reg - DATA0);
1863 break;
1864 case AREG:
1865 opP->mask = 1 << (opP->reg - ADDR0 + 8);
1866 break;
1867 case FPREG:
1868 opP->mask = 1 << (opP->reg - FP0 + 16);
1869 break;
1870 default:
1871 abort ();
1872 }
1873 opP->mode = REGLST;
1874 }
1875 }
1876 else if (opP->mode == CONTROL)
1877 {
1878 if (s[1] != '8')
1879 losing++;
1880 else
1881 {
1882 switch (opP->reg)
1883 {
1884 case FPI:
1885 opP->mask = 1 << 24;
1886 break;
1887 case FPS:
1888 opP->mask = 1 << 25;
1889 break;
1890 case FPC:
1891 opP->mask = 1 << 26;
1892 break;
1893 default:
1894 losing++;
1895 break;
1896 }
1897 opP->mode = REGLST;
1898 }
1899 }
1900 else if (opP->mode != REGLST)
1901 losing++;
1902 else if (s[1] == '8' && (opP->mask & 0x0ffffff) != 0)
1903 losing++;
1904 else if (s[1] == '3' && (opP->mask & 0x7000000) != 0)
1905 losing++;
1906 break;
1907
1908 case 'M':
1909 if (opP->mode != IMMED)
1910 losing++;
1911 else if (opP->disp.exp.X_op != O_constant
1912 || ! issbyte (opP->disp.exp.X_add_number))
1913 losing++;
1914 else if (! m68k_quick
1915 && instring[3] != 'q'
1916 && instring[4] != 'q')
1917 losing++;
1918 break;
1919
1920 case 'O':
1921 if (opP->mode != DREG
1922 && opP->mode != IMMED
1923 && opP->mode != ABSL)
1924 losing++;
1925 break;
1926
1927 case 'Q':
1928 if (opP->mode != IMMED)
1929 losing++;
1930 else if (opP->disp.exp.X_op != O_constant
1931 || TRUNC (opP->disp.exp.X_add_number) - 1 > 7)
1932 losing++;
1933 else if (! m68k_quick
1934 && (strncmp (instring, "add", 3) == 0
1935 || strncmp (instring, "sub", 3) == 0)
1936 && instring[3] != 'q')
1937 losing++;
1938 break;
1939
1940 case 'R':
1941 if (opP->mode != DREG && opP->mode != AREG)
1942 losing++;
1943 break;
1944
1945 case 'r':
1946 if (opP->mode != AINDR
1947 && (opP->mode != BASE
1948 || (opP->reg != 0
1949 && opP->reg != ZADDR0)
1950 || opP->disp.exp.X_op != O_absent
1951 || ((opP->index.reg < DATA0
1952 || opP->index.reg > DATA7)
1953 && (opP->index.reg < ADDR0
1954 || opP->index.reg > ADDR7))
1955 || opP->index.size != SIZE_UNSPEC
1956 || opP->index.scale != 1))
1957 losing++;
1958 break;
1959
1960 case 's':
1961 if (opP->mode != CONTROL
1962 || ! (opP->reg == FPI
1963 || opP->reg == FPS
1964 || opP->reg == FPC))
1965 losing++;
1966 break;
1967
1968 case 'S':
1969 if (opP->mode != CONTROL || opP->reg != SR)
1970 losing++;
1971 break;
1972
1973 case 't':
1974 if (opP->mode != IMMED)
1975 losing++;
1976 else if (opP->disp.exp.X_op != O_constant
1977 || TRUNC (opP->disp.exp.X_add_number) > 7)
1978 losing++;
1979 break;
1980
1981 case 'U':
1982 if (opP->mode != CONTROL || opP->reg != USP)
1983 losing++;
1984 break;
1985
1986 case 'x':
1987 if (opP->mode != IMMED)
1988 losing++;
1989 else if (opP->disp.exp.X_op != O_constant
1990 || (TRUNC (opP->disp.exp.X_add_number) != 0xffffffff
1991 && TRUNC (opP->disp.exp.X_add_number) - 1 > 6))
1992 losing++;
1993 break;
1994
1995 case 'j':
1996 if (opP->mode != IMMED)
1997 losing++;
1998 else if (opP->disp.exp.X_op != O_constant
1999 || TRUNC (opP->disp.exp.X_add_number) - 1 > 7)
2000 losing++;
2001 break;
2002
2003 case 'K':
2004 if (opP->mode != IMMED)
2005 losing++;
2006 else if (opP->disp.exp.X_op != O_constant
2007 || TRUNC (opP->disp.exp.X_add_number) > 511)
2008 losing++;
2009 break;
2010
2011 /* JF these are out of order. We could put them
2012 in order if we were willing to put up with
2013 bunches of #ifdef m68851s in the code.
2014
2015 Don't forget that you need these operands
2016 to use 68030 MMU instructions. */
2017 #ifndef NO_68851
2018 /* Memory addressing mode used by pflushr. */
2019 case '|':
2020 if (opP->mode == CONTROL
2021 || opP->mode == FPREG
2022 || opP->mode == DREG
2023 || opP->mode == AREG
2024 || opP->mode == REGLST)
2025 losing++;
2026 /* We should accept immediate operands, but they
2027 supposedly have to be quad word, and we don't
2028 handle that. I would like to see what a Motorola
2029 assembler does before doing something here. */
2030 if (opP->mode == IMMED)
2031 losing++;
2032 break;
2033
2034 case 'f':
2035 if (opP->mode != CONTROL
2036 || (opP->reg != SFC && opP->reg != DFC))
2037 losing++;
2038 break;
2039
2040 case '0':
2041 if (opP->mode != CONTROL || opP->reg != TC)
2042 losing++;
2043 break;
2044
2045 case '1':
2046 if (opP->mode != CONTROL || opP->reg != AC)
2047 losing++;
2048 break;
2049
2050 case '2':
2051 if (opP->mode != CONTROL
2052 || (opP->reg != CAL
2053 && opP->reg != VAL
2054 && opP->reg != SCC))
2055 losing++;
2056 break;
2057
2058 case 'V':
2059 if (opP->mode != CONTROL
2060 || opP->reg != VAL)
2061 losing++;
2062 break;
2063
2064 case 'W':
2065 if (opP->mode != CONTROL
2066 || (opP->reg != DRP
2067 && opP->reg != SRP
2068 && opP->reg != CRP))
2069 losing++;
2070 break;
2071
2072 case 'w':
2073 switch (opP->mode)
2074 {
2075 case IMMED:
2076 case ABSL:
2077 case AREG:
2078 case DREG:
2079 case FPREG:
2080 case CONTROL:
2081 case POST:
2082 case PRE:
2083 case REGLST:
2084 losing++;
2085 break;
2086 default:
2087 break;
2088 }
2089 break;
2090
2091 case 'X':
2092 if (opP->mode != CONTROL
2093 || (!(opP->reg >= BAD && opP->reg <= BAD + 7)
2094 && !(opP->reg >= BAC && opP->reg <= BAC + 7)))
2095 losing++;
2096 break;
2097
2098 case 'Y':
2099 if (opP->mode != CONTROL || opP->reg != PSR)
2100 losing++;
2101 break;
2102
2103 case 'Z':
2104 if (opP->mode != CONTROL || opP->reg != PCSR)
2105 losing++;
2106 break;
2107 #endif
2108 case 'c':
2109 if (opP->mode != CONTROL
2110 || (opP->reg != NC
2111 && opP->reg != IC
2112 && opP->reg != DC
2113 && opP->reg != BC))
2114 losing++;
2115 break;
2116
2117 case '_':
2118 if (opP->mode != ABSL)
2119 ++losing;
2120 break;
2121
2122 case 'u':
2123 if (opP->reg < DATA0L || opP->reg > ADDR7U)
2124 losing++;
2125 /* FIXME: kludge instead of fixing parser:
2126 upper/lower registers are *not* CONTROL
2127 registers, but ordinary ones. */
2128 if ((opP->reg >= DATA0L && opP->reg <= DATA7L)
2129 || (opP->reg >= DATA0U && opP->reg <= DATA7U))
2130 opP->mode = DREG;
2131 else
2132 opP->mode = AREG;
2133 break;
2134
2135 case 'y':
2136 if (!(opP->mode == AINDR
2137 || (opP->mode == DISP
2138 && !(opP->reg == PC || opP->reg == ZPC))))
2139 losing++;
2140 break;
2141
2142 case 'z':
2143 if (!(opP->mode == AINDR || opP->mode == DISP))
2144 losing++;
2145 break;
2146
2147 default:
2148 abort ();
2149 }
2150
2151 if (losing)
2152 break;
2153 }
2154
2155 /* Since we have found the correct instruction, copy
2156 in the modifications that we may have made. */
2157 if (!losing)
2158 for (i = 0; i < opsfound; i++)
2159 the_ins.operands[i] = operands_backup[i];
2160 }
2161
2162 if (!losing)
2163 break;
2164
2165 opcode = opcode->m_next;
2166
2167 if (!opcode)
2168 {
2169 if (ok_arch
2170 && !(ok_arch & current_architecture))
2171 {
2172 const struct m68k_cpu *cpu;
2173 int any = 0;
2174 size_t space = 400;
2175 char *buf = xmalloc (space + 1);
2176 size_t len;
2177 int paren = 1;
2178
2179 the_ins.error = buf;
2180 /* Make sure there's a NUL at the end of the buffer -- strncpy
2181 won't write one when it runs out of buffer. */
2182 buf[space] = 0;
2183 #define APPEND(STRING) \
2184 (strncpy (buf, STRING, space), len = strlen (buf), buf += len, space -= len)
2185
2186 APPEND (_("invalid instruction for this architecture; needs "));
2187 switch (ok_arch)
2188 {
2189 case mcfisa_a:
2190 APPEND ("ColdFire ISA_A");
2191 break;
2192 case mcfhwdiv:
2193 APPEND ("ColdFire ");
2194 APPEND (_("hardware divide"));
2195 break;
2196 case mcfisa_aa:
2197 APPEND ("ColdFire ISA_A+");
2198 break;
2199 case mcfisa_b:
2200 APPEND ("ColdFire ISA_B");
2201 break;
2202 case mcfisa_c:
2203 APPEND ("ColdFire ISA_C");
2204 break;
2205 case cfloat:
2206 APPEND ("ColdFire fpu");
2207 break;
2208 case mfloat:
2209 APPEND ("M68K fpu");
2210 break;
2211 case mmmu:
2212 APPEND ("M68K mmu");
2213 break;
2214 case m68020up:
2215 APPEND ("68020 ");
2216 APPEND (_("or higher"));
2217 break;
2218 case m68000up:
2219 APPEND ("68000 ");
2220 APPEND (_("or higher"));
2221 break;
2222 case m68010up:
2223 APPEND ("68010 ");
2224 APPEND (_("or higher"));
2225 break;
2226 default:
2227 paren = 0;
2228 }
2229 if (paren)
2230 APPEND (" (");
2231
2232 for (cpu = m68k_cpus; cpu->name; cpu++)
2233 if (!cpu->alias && (cpu->arch & ok_arch))
2234 {
2235 const struct m68k_cpu *alias;
2236 int seen_master = 0;
2237
2238 if (any)
2239 APPEND (", ");
2240 any = 0;
2241 APPEND (cpu->name);
2242 for (alias = cpu; alias != m68k_cpus; alias--)
2243 if (alias[-1].alias >= 0)
2244 break;
2245 for (; !seen_master || alias->alias > 0; alias++)
2246 {
2247 if (!alias->alias)
2248 seen_master = 1;
2249 else
2250 {
2251 if (any)
2252 APPEND (", ");
2253 else
2254 APPEND (" [");
2255 APPEND (alias->name);
2256 any = 1;
2257 }
2258 }
2259 if (any)
2260 APPEND ("]");
2261 any = 1;
2262 }
2263 if (paren)
2264 APPEND (")");
2265 #undef APPEND
2266 if (!space)
2267 {
2268 /* We ran out of space, so replace the end of the list
2269 with ellipsis. */
2270 buf -= 4;
2271 while (*buf != ' ')
2272 buf--;
2273 strcpy (buf, " ...");
2274 }
2275 }
2276 else
2277 the_ins.error = _("operands mismatch");
2278 return;
2279 }
2280
2281 losing = 0;
2282 }
2283
2284 /* Now assemble it. */
2285 the_ins.args = opcode->m_operands;
2286 the_ins.numargs = opcode->m_opnum;
2287 the_ins.numo = opcode->m_codenum;
2288 the_ins.opcode[0] = getone (opcode);
2289 the_ins.opcode[1] = gettwo (opcode);
2290
2291 for (s = the_ins.args, opP = &the_ins.operands[0]; *s; s += 2, opP++)
2292 {
2293 int have_disp = 0;
2294 int use_pl = 0;
2295
2296 /* This switch is a doozy.
2297 Watch the first step; its a big one! */
2298 switch (s[0])
2299 {
2300
2301 case '*':
2302 case '~':
2303 case '%':
2304 case ';':
2305 case '@':
2306 case '!':
2307 case '&':
2308 case '$':
2309 case '?':
2310 case '/':
2311 case '<':
2312 case '>':
2313 case 'b':
2314 case 'm':
2315 case 'n':
2316 case 'o':
2317 case 'p':
2318 case 'q':
2319 case 'v':
2320 case 'w':
2321 case 'y':
2322 case 'z':
2323 case '4':
2324 #ifndef NO_68851
2325 case '|':
2326 #endif
2327 switch (opP->mode)
2328 {
2329 case IMMED:
2330 tmpreg = 0x3c; /* 7.4 */
2331 if (strchr ("bwl", s[1]))
2332 nextword = get_num (&opP->disp, 90);
2333 else
2334 nextword = get_num (&opP->disp, 0);
2335 if (isvar (&opP->disp))
2336 add_fix (s[1], &opP->disp, 0, 0);
2337 switch (s[1])
2338 {
2339 case 'b':
2340 if (!isbyte (nextword))
2341 opP->error = _("operand out of range");
2342 addword (nextword);
2343 baseo = 0;
2344 break;
2345 case 'w':
2346 if (!isword (nextword))
2347 opP->error = _("operand out of range");
2348 addword (nextword);
2349 baseo = 0;
2350 break;
2351 case 'W':
2352 if (!issword (nextword))
2353 opP->error = _("operand out of range");
2354 addword (nextword);
2355 baseo = 0;
2356 break;
2357 case 'l':
2358 addword (nextword >> 16);
2359 addword (nextword);
2360 baseo = 0;
2361 break;
2362
2363 case 'f':
2364 baseo = 2;
2365 outro = 8;
2366 break;
2367 case 'F':
2368 baseo = 4;
2369 outro = 11;
2370 break;
2371 case 'x':
2372 baseo = 6;
2373 outro = 15;
2374 break;
2375 case 'p':
2376 baseo = 6;
2377 outro = -1;
2378 break;
2379 default:
2380 abort ();
2381 }
2382 if (!baseo)
2383 break;
2384
2385 /* We gotta put out some float. */
2386 if (op (&opP->disp) != O_big)
2387 {
2388 valueT val;
2389 int gencnt;
2390
2391 /* Can other cases happen here? */
2392 if (op (&opP->disp) != O_constant)
2393 abort ();
2394
2395 val = (valueT) offs (&opP->disp);
2396 gencnt = 0;
2397 do
2398 {
2399 generic_bignum[gencnt] = (LITTLENUM_TYPE) val;
2400 val >>= LITTLENUM_NUMBER_OF_BITS;
2401 ++gencnt;
2402 }
2403 while (val != 0);
2404 offs (&opP->disp) = gencnt;
2405 }
2406 if (offs (&opP->disp) > 0)
2407 {
2408 if (offs (&opP->disp) > baseo)
2409 {
2410 as_warn (_("Bignum too big for %c format; truncated"),
2411 s[1]);
2412 offs (&opP->disp) = baseo;
2413 }
2414 baseo -= offs (&opP->disp);
2415 while (baseo--)
2416 addword (0);
2417 for (wordp = generic_bignum + offs (&opP->disp) - 1;
2418 offs (&opP->disp)--;
2419 --wordp)
2420 addword (*wordp);
2421 break;
2422 }
2423 gen_to_words (words, baseo, (long) outro);
2424 for (wordp = words; baseo--; wordp++)
2425 addword (*wordp);
2426 break;
2427 case DREG:
2428 tmpreg = opP->reg - DATA; /* 0.dreg */
2429 break;
2430 case AREG:
2431 tmpreg = 0x08 + opP->reg - ADDR; /* 1.areg */
2432 break;
2433 case AINDR:
2434 tmpreg = 0x10 + opP->reg - ADDR; /* 2.areg */
2435 break;
2436 case ADEC:
2437 tmpreg = 0x20 + opP->reg - ADDR; /* 4.areg */
2438 break;
2439 case AINC:
2440 tmpreg = 0x18 + opP->reg - ADDR; /* 3.areg */
2441 break;
2442 case DISP:
2443
2444 nextword = get_num (&opP->disp, 90);
2445
2446 /* Convert mode 5 addressing with a zero offset into
2447 mode 2 addressing to reduce the instruction size by a
2448 word. */
2449 if (! isvar (&opP->disp)
2450 && (nextword == 0)
2451 && (opP->disp.size == SIZE_UNSPEC)
2452 && (opP->reg >= ADDR0)
2453 && (opP->reg <= ADDR7))
2454 {
2455 tmpreg = 0x10 + opP->reg - ADDR; /* 2.areg */
2456 break;
2457 }
2458
2459 if (opP->reg == PC
2460 && ! isvar (&opP->disp)
2461 && m68k_abspcadd)
2462 {
2463 opP->disp.exp.X_op = O_symbol;
2464 opP->disp.exp.X_add_symbol =
2465 section_symbol (absolute_section);
2466 }
2467
2468 /* Force into index mode. Hope this works. */
2469
2470 /* We do the first bit for 32-bit displacements, and the
2471 second bit for 16 bit ones. It is possible that we
2472 should make the default be WORD instead of LONG, but
2473 I think that'd break GCC, so we put up with a little
2474 inefficiency for the sake of working output. */
2475
2476 if (!issword (nextword)
2477 || (isvar (&opP->disp)
2478 && ((opP->disp.size == SIZE_UNSPEC
2479 && flag_short_refs == 0
2480 && cpu_of_arch (current_architecture) >= m68020
2481 && ! arch_coldfire_p (current_architecture))
2482 || opP->disp.size == SIZE_LONG)))
2483 {
2484 if (cpu_of_arch (current_architecture) < m68020
2485 || arch_coldfire_p (current_architecture))
2486 opP->error =
2487 _("displacement too large for this architecture; needs 68020 or higher");
2488 if (opP->reg == PC)
2489 tmpreg = 0x3B; /* 7.3 */
2490 else
2491 tmpreg = 0x30 + opP->reg - ADDR; /* 6.areg */
2492 if (isvar (&opP->disp))
2493 {
2494 if (opP->reg == PC)
2495 {
2496 if (opP->disp.size == SIZE_LONG
2497 #ifdef OBJ_ELF
2498 /* If the displacement needs pic
2499 relocation it cannot be relaxed. */
2500 || opP->disp.pic_reloc != pic_none
2501 #endif
2502 )
2503 {
2504 addword (0x0170);
2505 add_fix ('l', &opP->disp, 1, 2);
2506 }
2507 else
2508 {
2509 add_frag (adds (&opP->disp),
2510 SEXT (offs (&opP->disp)),
2511 TAB (PCREL1632, SZ_UNDEF));
2512 break;
2513 }
2514 }
2515 else
2516 {
2517 addword (0x0170);
2518 add_fix ('l', &opP->disp, 0, 0);
2519 }
2520 }
2521 else
2522 addword (0x0170);
2523 addword (nextword >> 16);
2524 }
2525 else
2526 {
2527 if (opP->reg == PC)
2528 tmpreg = 0x3A; /* 7.2 */
2529 else
2530 tmpreg = 0x28 + opP->reg - ADDR; /* 5.areg */
2531
2532 if (isvar (&opP->disp))
2533 {
2534 if (opP->reg == PC)
2535 {
2536 add_fix ('w', &opP->disp, 1, 0);
2537 }
2538 else
2539 add_fix ('w', &opP->disp, 0, 0);
2540 }
2541 }
2542 addword (nextword);
2543 break;
2544
2545 case POST:
2546 case PRE:
2547 case BASE:
2548 nextword = 0;
2549 baseo = get_num (&opP->disp, 90);
2550 if (opP->mode == POST || opP->mode == PRE)
2551 outro = get_num (&opP->odisp, 90);
2552 /* Figure out the `addressing mode'.
2553 Also turn on the BASE_DISABLE bit, if needed. */
2554 if (opP->reg == PC || opP->reg == ZPC)
2555 {
2556 tmpreg = 0x3b; /* 7.3 */
2557 if (opP->reg == ZPC)
2558 nextword |= 0x80;
2559 }
2560 else if (opP->reg == 0)
2561 {
2562 nextword |= 0x80;
2563 tmpreg = 0x30; /* 6.garbage */
2564 }
2565 else if (opP->reg >= ZADDR0 && opP->reg <= ZADDR7)
2566 {
2567 nextword |= 0x80;
2568 tmpreg = 0x30 + opP->reg - ZADDR0;
2569 }
2570 else
2571 tmpreg = 0x30 + opP->reg - ADDR; /* 6.areg */
2572
2573 siz1 = opP->disp.size;
2574 if (opP->mode == POST || opP->mode == PRE)
2575 siz2 = opP->odisp.size;
2576 else
2577 siz2 = SIZE_UNSPEC;
2578
2579 /* Index register stuff. */
2580 if (opP->index.reg != 0
2581 && opP->index.reg >= DATA
2582 && opP->index.reg <= ADDR7)
2583 {
2584 nextword |= (opP->index.reg - DATA) << 12;
2585
2586 if (opP->index.size == SIZE_LONG
2587 || (opP->index.size == SIZE_UNSPEC
2588 && m68k_index_width_default == SIZE_LONG))
2589 nextword |= 0x800;
2590
2591 if ((opP->index.scale != 1
2592 && cpu_of_arch (current_architecture) < m68020)
2593 || (opP->index.scale == 8
2594 && (arch_coldfire_p (current_architecture)
2595 && !arch_coldfire_fpu (current_architecture))))
2596 {
2597 opP->error =
2598 _("scale factor invalid on this architecture; needs cpu32 or 68020 or higher");
2599 }
2600
2601 if (arch_coldfire_p (current_architecture)
2602 && opP->index.size == SIZE_WORD)
2603 opP->error = _("invalid index size for coldfire");
2604
2605 switch (opP->index.scale)
2606 {
2607 case 1:
2608 break;
2609 case 2:
2610 nextword |= 0x200;
2611 break;
2612 case 4:
2613 nextword |= 0x400;
2614 break;
2615 case 8:
2616 nextword |= 0x600;
2617 break;
2618 default:
2619 abort ();
2620 }
2621 /* IF its simple,
2622 GET US OUT OF HERE! */
2623
2624 /* Must be INDEX, with an index register. Address
2625 register cannot be ZERO-PC, and either :b was
2626 forced, or we know it will fit. For a 68000 or
2627 68010, force this mode anyways, because the
2628 larger modes aren't supported. */
2629 if (opP->mode == BASE
2630 && ((opP->reg >= ADDR0
2631 && opP->reg <= ADDR7)
2632 || opP->reg == PC))
2633 {
2634 if (siz1 == SIZE_BYTE
2635 || cpu_of_arch (current_architecture) < m68020
2636 || arch_coldfire_p (current_architecture)
2637 || (siz1 == SIZE_UNSPEC
2638 && ! isvar (&opP->disp)
2639 && issbyte (baseo)))
2640 {
2641 nextword += baseo & 0xff;
2642 addword (nextword);
2643 if (isvar (&opP->disp))
2644 {
2645 /* Do a byte relocation. If it doesn't
2646 fit (possible on m68000) let the
2647 fixup processing complain later. */
2648 if (opP->reg == PC)
2649 add_fix ('B', &opP->disp, 1, 1);
2650 else
2651 add_fix ('B', &opP->disp, 0, 0);
2652 }
2653 else if (siz1 != SIZE_BYTE)
2654 {
2655 if (siz1 != SIZE_UNSPEC)
2656 as_warn (_("Forcing byte displacement"));
2657 if (! issbyte (baseo))
2658 opP->error = _("byte displacement out of range");
2659 }
2660
2661 break;
2662 }
2663 else if (siz1 == SIZE_UNSPEC
2664 && opP->reg == PC
2665 && isvar (&opP->disp)
2666 && subs (&opP->disp) == NULL
2667 #ifdef OBJ_ELF
2668 /* If the displacement needs pic
2669 relocation it cannot be relaxed. */
2670 && opP->disp.pic_reloc == pic_none
2671 #endif
2672 )
2673 {
2674 /* The code in md_convert_frag_1 needs to be
2675 able to adjust nextword. Call frag_grow
2676 to ensure that we have enough space in
2677 the frag obstack to make all the bytes
2678 contiguous. */
2679 frag_grow (14);
2680 nextword += baseo & 0xff;
2681 addword (nextword);
2682 add_frag (adds (&opP->disp),
2683 SEXT (offs (&opP->disp)),
2684 TAB (PCINDEX, SZ_UNDEF));
2685
2686 break;
2687 }
2688 }
2689 }
2690 else
2691 {
2692 nextword |= 0x40; /* No index reg. */
2693 if (opP->index.reg >= ZDATA0
2694 && opP->index.reg <= ZDATA7)
2695 nextword |= (opP->index.reg - ZDATA0) << 12;
2696 else if (opP->index.reg >= ZADDR0
2697 || opP->index.reg <= ZADDR7)
2698 nextword |= (opP->index.reg - ZADDR0 + 8) << 12;
2699 }
2700
2701 /* It isn't simple. */
2702
2703 if (cpu_of_arch (current_architecture) < m68020
2704 || arch_coldfire_p (current_architecture))
2705 opP->error =
2706 _("invalid operand mode for this architecture; needs 68020 or higher");
2707
2708 nextword |= 0x100;
2709 /* If the guy specified a width, we assume that it is
2710 wide enough. Maybe it isn't. If so, we lose. */
2711 switch (siz1)
2712 {
2713 case SIZE_UNSPEC:
2714 if (isvar (&opP->disp)
2715 ? m68k_rel32
2716 : ! issword (baseo))
2717 {
2718 siz1 = SIZE_LONG;
2719 nextword |= 0x30;
2720 }
2721 else if (! isvar (&opP->disp) && baseo == 0)
2722 nextword |= 0x10;
2723 else
2724 {
2725 nextword |= 0x20;
2726 siz1 = SIZE_WORD;
2727 }
2728 break;
2729 case SIZE_BYTE:
2730 as_warn (_(":b not permitted; defaulting to :w"));
2731 /* Fall through. */
2732 case SIZE_WORD:
2733 nextword |= 0x20;
2734 break;
2735 case SIZE_LONG:
2736 nextword |= 0x30;
2737 break;
2738 }
2739
2740 /* Figure out inner displacement stuff. */
2741 if (opP->mode == POST || opP->mode == PRE)
2742 {
2743 if (cpu_of_arch (current_architecture) & cpu32)
2744 opP->error = _("invalid operand mode for this architecture; needs 68020 or higher");
2745 switch (siz2)
2746 {
2747 case SIZE_UNSPEC:
2748 if (isvar (&opP->odisp)
2749 ? m68k_rel32
2750 : ! issword (outro))
2751 {
2752 siz2 = SIZE_LONG;
2753 nextword |= 0x3;
2754 }
2755 else if (! isvar (&opP->odisp) && outro == 0)
2756 nextword |= 0x1;
2757 else
2758 {
2759 nextword |= 0x2;
2760 siz2 = SIZE_WORD;
2761 }
2762 break;
2763 case 1:
2764 as_warn (_(":b not permitted; defaulting to :w"));
2765 /* Fall through. */
2766 case 2:
2767 nextword |= 0x2;
2768 break;
2769 case 3:
2770 nextword |= 0x3;
2771 break;
2772 }
2773 if (opP->mode == POST
2774 && (nextword & 0x40) == 0)
2775 nextword |= 0x04;
2776 }
2777 addword (nextword);
2778
2779 if (siz1 != SIZE_UNSPEC && isvar (&opP->disp))
2780 {
2781 if (opP->reg == PC || opP->reg == ZPC)
2782 add_fix (siz1 == SIZE_LONG ? 'l' : 'w', &opP->disp, 1, 2);
2783 else
2784 add_fix (siz1 == SIZE_LONG ? 'l' : 'w', &opP->disp, 0, 0);
2785 }
2786 if (siz1 == SIZE_LONG)
2787 addword (baseo >> 16);
2788 if (siz1 != SIZE_UNSPEC)
2789 addword (baseo);
2790
2791 if (siz2 != SIZE_UNSPEC && isvar (&opP->odisp))
2792 add_fix (siz2 == SIZE_LONG ? 'l' : 'w', &opP->odisp, 0, 0);
2793 if (siz2 == SIZE_LONG)
2794 addword (outro >> 16);
2795 if (siz2 != SIZE_UNSPEC)
2796 addword (outro);
2797
2798 break;
2799
2800 case ABSL:
2801 nextword = get_num (&opP->disp, 90);
2802 switch (opP->disp.size)
2803 {
2804 default:
2805 abort ();
2806 case SIZE_UNSPEC:
2807 if (!isvar (&opP->disp) && issword (offs (&opP->disp)))
2808 {
2809 tmpreg = 0x38; /* 7.0 */
2810 addword (nextword);
2811 break;
2812 }
2813 if (isvar (&opP->disp)
2814 && !subs (&opP->disp)
2815 && adds (&opP->disp)
2816 #ifdef OBJ_ELF
2817 /* If the displacement needs pic relocation it
2818 cannot be relaxed. */
2819 && opP->disp.pic_reloc == pic_none
2820 #endif
2821 && !flag_long_jumps
2822 && !strchr ("~%&$?", s[0]))
2823 {
2824 tmpreg = 0x3A; /* 7.2 */
2825 add_frag (adds (&opP->disp),
2826 SEXT (offs (&opP->disp)),
2827 TAB (ABSTOPCREL, SZ_UNDEF));
2828 break;
2829 }
2830 /* Fall through into long. */
2831 case SIZE_LONG:
2832 if (isvar (&opP->disp))
2833 add_fix ('l', &opP->disp, 0, 0);
2834
2835 tmpreg = 0x39;/* 7.1 mode */
2836 addword (nextword >> 16);
2837 addword (nextword);
2838 break;
2839
2840 case SIZE_BYTE:
2841 as_bad (_("unsupported byte value; use a different suffix"));
2842 /* Fall through. */
2843
2844 case SIZE_WORD:
2845 if (isvar (&opP->disp))
2846 add_fix ('w', &opP->disp, 0, 0);
2847
2848 tmpreg = 0x38;/* 7.0 mode */
2849 addword (nextword);
2850 break;
2851 }
2852 break;
2853 case CONTROL:
2854 case FPREG:
2855 default:
2856 as_bad (_("unknown/incorrect operand"));
2857 /* abort (); */
2858 }
2859
2860 /* If s[0] is '4', then this is for the mac instructions
2861 that can have a trailing_ampersand set. If so, set 0x100
2862 bit on tmpreg so install_gen_operand can check for it and
2863 set the appropriate bit (word2, bit 5). */
2864 if (s[0] == '4')
2865 {
2866 if (opP->trailing_ampersand)
2867 tmpreg |= 0x100;
2868 }
2869 install_gen_operand (s[1], tmpreg);
2870 break;
2871
2872 case '#':
2873 case '^':
2874 switch (s[1])
2875 { /* JF: I hate floating point! */
2876 case 'j':
2877 tmpreg = 70;
2878 break;
2879 case '8':
2880 tmpreg = 20;
2881 break;
2882 case 'C':
2883 tmpreg = 50;
2884 break;
2885 case '3':
2886 default:
2887 tmpreg = 90;
2888 break;
2889 }
2890 tmpreg = get_num (&opP->disp, tmpreg);
2891 if (isvar (&opP->disp))
2892 add_fix (s[1], &opP->disp, 0, 0);
2893 switch (s[1])
2894 {
2895 case 'b': /* Danger: These do no check for
2896 certain types of overflow.
2897 user beware! */
2898 if (!isbyte (tmpreg))
2899 opP->error = _("out of range");
2900 insop (tmpreg, opcode);
2901 if (isvar (&opP->disp))
2902 the_ins.reloc[the_ins.nrel - 1].n =
2903 (opcode->m_codenum) * 2 + 1;
2904 break;
2905 case 'B':
2906 if (!issbyte (tmpreg))
2907 opP->error = _("out of range");
2908 the_ins.opcode[the_ins.numo - 1] |= tmpreg & 0xff;
2909 if (isvar (&opP->disp))
2910 the_ins.reloc[the_ins.nrel - 1].n = opcode->m_codenum * 2 - 1;
2911 break;
2912 case 'w':
2913 if (!isword (tmpreg))
2914 opP->error = _("out of range");
2915 insop (tmpreg, opcode);
2916 if (isvar (&opP->disp))
2917 the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
2918 break;
2919 case 'W':
2920 if (!issword (tmpreg))
2921 opP->error = _("out of range");
2922 insop (tmpreg, opcode);
2923 if (isvar (&opP->disp))
2924 the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
2925 break;
2926 case 'l':
2927 /* Because of the way insop works, we put these two out
2928 backwards. */
2929 insop (tmpreg, opcode);
2930 insop (tmpreg >> 16, opcode);
2931 if (isvar (&opP->disp))
2932 the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
2933 break;
2934 case '3':
2935 tmpreg &= 0xFF;
2936 case '8':
2937 case 'C':
2938 case 'j':
2939 install_operand (s[1], tmpreg);
2940 break;
2941 default:
2942 abort ();
2943 }
2944 break;
2945
2946 case '+':
2947 case '-':
2948 case 'A':
2949 case 'a':
2950 install_operand (s[1], opP->reg - ADDR);
2951 break;
2952
2953 case 'B':
2954 tmpreg = get_num (&opP->disp, 90);
2955
2956 switch (s[1])
2957 {
2958 case 'B':
2959 add_fix ('B', &opP->disp, 1, -1);
2960 break;
2961 case 'W':
2962 add_fix ('w', &opP->disp, 1, 0);
2963 addword (0);
2964 break;
2965 case 'L':
2966 long_branch:
2967 the_ins.opcode[0] |= 0xff;
2968 add_fix ('l', &opP->disp, 1, 0);
2969 addword (0);
2970 addword (0);
2971 break;
2972 case 'g': /* Conditional branch */
2973 have_disp = HAVE_LONG_CALL (current_architecture);
2974 goto var_branch;
2975
2976 case 'b': /* Unconditional branch */
2977 have_disp = HAVE_LONG_BRANCH (current_architecture);
2978 use_pl = LONG_BRANCH_VIA_COND (current_architecture);
2979 goto var_branch;
2980
2981 case 's': /* Unconditional subroutine */
2982 have_disp = HAVE_LONG_CALL (current_architecture);
2983
2984 var_branch:
2985 if (subs (&opP->disp) /* We can't relax it. */
2986 #ifdef OBJ_ELF
2987 /* If the displacement needs pic relocation it cannot be
2988 relaxed. */
2989 || opP->disp.pic_reloc != pic_none
2990 #endif
2991 || 0)
2992 {
2993 if (!have_disp)
2994 as_warn (_("Can't use long branches on this architecture"));
2995 goto long_branch;
2996 }
2997
2998 /* This could either be a symbol, or an absolute
2999 address. If it's an absolute address, turn it into
3000 an absolute jump right here and keep it out of the
3001 relaxer. */
3002 if (adds (&opP->disp) == 0)
3003 {
3004 if (the_ins.opcode[0] == 0x6000) /* jbra */
3005 the_ins.opcode[0] = 0x4EF9;
3006 else if (the_ins.opcode[0] == 0x6100) /* jbsr */
3007 the_ins.opcode[0] = 0x4EB9;
3008 else /* jCC */
3009 {
3010 the_ins.opcode[0] ^= 0x0100;
3011 the_ins.opcode[0] |= 0x0006;
3012 addword (0x4EF9);
3013 }
3014 add_fix ('l', &opP->disp, 0, 0);
3015 addword (0);
3016 addword (0);
3017 break;
3018 }
3019
3020 /* Now we know it's going into the relaxer. Now figure
3021 out which mode. We try in this order of preference:
3022 long branch, absolute jump, byte/word branches only. */
3023 if (have_disp)
3024 add_frag (adds (&opP->disp),
3025 SEXT (offs (&opP->disp)),
3026 TAB (BRANCHBWL, SZ_UNDEF));
3027 else if (! flag_keep_pcrel)
3028 {
3029 if ((the_ins.opcode[0] == 0x6000)
3030 || (the_ins.opcode[0] == 0x6100))
3031 add_frag (adds (&opP->disp),
3032 SEXT (offs (&opP->disp)),
3033 TAB (BRABSJUNC, SZ_UNDEF));
3034 else
3035 add_frag (adds (&opP->disp),
3036 SEXT (offs (&opP->disp)),
3037 TAB (BRABSJCOND, SZ_UNDEF));
3038 }
3039 else
3040 add_frag (adds (&opP->disp),
3041 SEXT (offs (&opP->disp)),
3042 (use_pl ? TAB (BRANCHBWPL, SZ_UNDEF)
3043 : TAB (BRANCHBW, SZ_UNDEF)));
3044 break;
3045 case 'w':
3046 if (isvar (&opP->disp))
3047 {
3048 /* Check for DBcc instructions. We can relax them,
3049 but only if we have long branches and/or absolute
3050 jumps. */
3051 if (((the_ins.opcode[0] & 0xf0f8) == 0x50c8)
3052 && (HAVE_LONG_BRANCH (current_architecture)
3053 || ! flag_keep_pcrel))
3054 {
3055 if (HAVE_LONG_BRANCH (current_architecture))
3056 add_frag (adds (&opP->disp),
3057 SEXT (offs (&opP->disp)),
3058 TAB (DBCCLBR, SZ_UNDEF));
3059 else
3060 add_frag (adds (&opP->disp),
3061 SEXT (offs (&opP->disp)),
3062 TAB (DBCCABSJ, SZ_UNDEF));
3063 break;
3064 }
3065 add_fix ('w', &opP->disp, 1, 0);
3066 }
3067 addword (0);
3068 break;
3069 case 'C': /* Fixed size LONG coproc branches. */
3070 add_fix ('l', &opP->disp, 1, 0);
3071 addword (0);
3072 addword (0);
3073 break;
3074 case 'c': /* Var size Coprocesssor branches. */
3075 if (subs (&opP->disp) || (adds (&opP->disp) == 0))
3076 {
3077 the_ins.opcode[the_ins.numo - 1] |= 0x40;
3078 add_fix ('l', &opP->disp, 1, 0);
3079 addword (0);
3080 addword (0);
3081 }
3082 else
3083 add_frag (adds (&opP->disp),
3084 SEXT (offs (&opP->disp)),
3085 TAB (FBRANCH, SZ_UNDEF));
3086 break;
3087 default:
3088 abort ();
3089 }
3090 break;
3091
3092 case 'C': /* Ignore it. */
3093 break;
3094
3095 case 'd': /* JF this is a kludge. */
3096 install_operand ('s', opP->reg - ADDR);
3097 tmpreg = get_num (&opP->disp, 90);
3098 if (!issword (tmpreg))
3099 {
3100 as_warn (_("Expression out of range, using 0"));
3101 tmpreg = 0;
3102 }
3103 addword (tmpreg);
3104 break;
3105
3106 case 'D':
3107 install_operand (s[1], opP->reg - DATA);
3108 break;
3109
3110 case 'e': /* EMAC ACCx, reg/reg. */
3111 install_operand (s[1], opP->reg - ACC);
3112 break;
3113
3114 case 'E': /* Ignore it. */
3115 break;
3116
3117 case 'F':
3118 install_operand (s[1], opP->reg - FP0);
3119 break;
3120
3121 case 'g': /* EMAC ACCEXTx. */
3122 install_operand (s[1], opP->reg - ACCEXT01);
3123 break;
3124
3125 case 'G': /* Ignore it. */
3126 case 'H':
3127 break;
3128
3129 case 'I':
3130 tmpreg = opP->reg - COP0;
3131 install_operand (s[1], tmpreg);
3132 break;
3133
3134 case 'i': /* MAC/EMAC scale factor. */
3135 install_operand (s[1], opP->mode == LSH ? 0x1 : 0x3);
3136 break;
3137
3138 case 'J': /* JF foo. */
3139 switch (opP->reg)
3140 {
3141 case SFC:
3142 tmpreg = 0x000;
3143 break;
3144 case DFC:
3145 tmpreg = 0x001;
3146 break;
3147 case CACR:
3148 tmpreg = 0x002;
3149 break;
3150 case TC:
3151 case ASID:
3152 tmpreg = 0x003;
3153 break;
3154 case ACR0:
3155 case ITT0:
3156 tmpreg = 0x004;
3157 break;
3158 case ACR1:
3159 case ITT1:
3160 tmpreg = 0x005;
3161 break;
3162 case ACR2:
3163 case DTT0:
3164 tmpreg = 0x006;
3165 break;
3166 case ACR3:
3167 case DTT1:
3168 tmpreg = 0x007;
3169 break;
3170 case BUSCR:
3171 case MMUBAR:
3172 tmpreg = 0x008;
3173 break;
3174
3175 case USP:
3176 tmpreg = 0x800;
3177 break;
3178 case VBR:
3179 tmpreg = 0x801;
3180 break;
3181 case CAAR:
3182 tmpreg = 0x802;
3183 break;
3184 case MSP:
3185 tmpreg = 0x803;
3186 break;
3187 case ISP:
3188 tmpreg = 0x804;
3189 break;
3190 case MMUSR:
3191 tmpreg = 0x805;
3192 break;
3193 case URP:
3194 tmpreg = 0x806;
3195 break;
3196 case SRP:
3197 tmpreg = 0x807;
3198 break;
3199 case PCR:
3200 tmpreg = 0x808;
3201 break;
3202 case ROMBAR:
3203 case ROMBAR0:
3204 tmpreg = 0xC00;
3205 break;
3206 case ROMBAR1:
3207 tmpreg = 0xC01;
3208 break;
3209 case FLASHBAR:
3210 case RAMBAR0:
3211 case RAMBAR_ALT:
3212 tmpreg = 0xC04;
3213 break;
3214 case RAMBAR:
3215 case RAMBAR1:
3216 tmpreg = 0xC05;
3217 break;
3218 case MPCR:
3219 tmpreg = 0xC0C;
3220 break;
3221 case EDRAMBAR:
3222 tmpreg = 0xC0D;
3223 break;
3224 case MBAR0:
3225 case MBAR2:
3226 case SECMBAR:
3227 tmpreg = 0xC0E;
3228 break;
3229 case MBAR1:
3230 case MBAR:
3231 tmpreg = 0xC0F;
3232 break;
3233 case PCR1U0:
3234 tmpreg = 0xD02;
3235 break;
3236 case PCR1L0:
3237 tmpreg = 0xD03;
3238 break;
3239 case PCR2U0:
3240 tmpreg = 0xD04;
3241 break;
3242 case PCR2L0:
3243 tmpreg = 0xD05;
3244 break;
3245 case PCR3U0:
3246 tmpreg = 0xD06;
3247 break;
3248 case PCR3L0:
3249 tmpreg = 0xD07;
3250 break;
3251 case PCR1L1:
3252 tmpreg = 0xD0A;
3253 break;
3254 case PCR1U1:
3255 tmpreg = 0xD0B;
3256 break;
3257 case PCR2L1:
3258 tmpreg = 0xD0C;
3259 break;
3260 case PCR2U1:
3261 tmpreg = 0xD0D;
3262 break;
3263 case PCR3L1:
3264 tmpreg = 0xD0E;
3265 break;
3266 case PCR3U1:
3267 tmpreg = 0xD0F;
3268 break;
3269 case CAC:
3270 tmpreg = 0xFFE;
3271 break;
3272 case MBO:
3273 tmpreg = 0xFFF;
3274 break;
3275 default:
3276 abort ();
3277 }
3278 install_operand (s[1], tmpreg);
3279 break;
3280
3281 case 'k':
3282 tmpreg = get_num (&opP->disp, 55);
3283 install_operand (s[1], tmpreg & 0x7f);
3284 break;
3285
3286 case 'l':
3287 tmpreg = opP->mask;
3288 if (s[1] == 'w')
3289 {
3290 if (tmpreg & 0x7FF0000)
3291 as_bad (_("Floating point register in register list"));
3292 insop (reverse_16_bits (tmpreg), opcode);
3293 }
3294 else
3295 {
3296 if (tmpreg & 0x700FFFF)
3297 as_bad (_("Wrong register in floating-point reglist"));
3298 install_operand (s[1], reverse_8_bits (tmpreg >> 16));
3299 }
3300 break;
3301
3302 case 'L':
3303 tmpreg = opP->mask;
3304 if (s[1] == 'w')
3305 {
3306 if (tmpreg & 0x7FF0000)
3307 as_bad (_("Floating point register in register list"));
3308 insop (tmpreg, opcode);
3309 }
3310 else if (s[1] == '8')
3311 {
3312 if (tmpreg & 0x0FFFFFF)
3313 as_bad (_("incorrect register in reglist"));
3314 install_operand (s[1], tmpreg >> 24);
3315 }
3316 else
3317 {
3318 if (tmpreg & 0x700FFFF)
3319 as_bad (_("wrong register in floating-point reglist"));
3320 else
3321 install_operand (s[1], tmpreg >> 16);
3322 }
3323 break;
3324
3325 case 'M':
3326 install_operand (s[1], get_num (&opP->disp, 60));
3327 break;
3328
3329 case 'O':
3330 tmpreg = ((opP->mode == DREG)
3331 ? 0x20 + (int) (opP->reg - DATA)
3332 : (get_num (&opP->disp, 40) & 0x1F));
3333 install_operand (s[1], tmpreg);
3334 break;
3335
3336 case 'Q':
3337 tmpreg = get_num (&opP->disp, 10);
3338 if (tmpreg == 8)
3339 tmpreg = 0;
3340 install_operand (s[1], tmpreg);
3341 break;
3342
3343 case 'R':
3344 /* This depends on the fact that ADDR registers are eight
3345 more than their corresponding DATA regs, so the result
3346 will have the ADDR_REG bit set. */
3347 install_operand (s[1], opP->reg - DATA);
3348 break;
3349
3350 case 'r':
3351 if (opP->mode == AINDR)
3352 install_operand (s[1], opP->reg - DATA);
3353 else
3354 install_operand (s[1], opP->index.reg - DATA);
3355 break;
3356
3357 case 's':
3358 if (opP->reg == FPI)
3359 tmpreg = 0x1;
3360 else if (opP->reg == FPS)
3361 tmpreg = 0x2;
3362 else if (opP->reg == FPC)
3363 tmpreg = 0x4;
3364 else
3365 abort ();
3366 install_operand (s[1], tmpreg);
3367 break;
3368
3369 case 'S': /* Ignore it. */
3370 break;
3371
3372 case 'T':
3373 install_operand (s[1], get_num (&opP->disp, 30));
3374 break;
3375
3376 case 'U': /* Ignore it. */
3377 break;
3378
3379 case 'c':
3380 switch (opP->reg)
3381 {
3382 case NC:
3383 tmpreg = 0;
3384 break;
3385 case DC:
3386 tmpreg = 1;
3387 break;
3388 case IC:
3389 tmpreg = 2;
3390 break;
3391 case BC:
3392 tmpreg = 3;
3393 break;
3394 default:
3395 as_fatal (_("failed sanity check"));
3396 } /* switch on cache token. */
3397 install_operand (s[1], tmpreg);
3398 break;
3399 #ifndef NO_68851
3400 /* JF: These are out of order, I fear. */
3401 case 'f':
3402 switch (opP->reg)
3403 {
3404 case SFC:
3405 tmpreg = 0;
3406 break;
3407 case DFC:
3408 tmpreg = 1;
3409 break;
3410 default:
3411 abort ();
3412 }
3413 install_operand (s[1], tmpreg);
3414 break;
3415
3416 case '0':
3417 case '1':
3418 case '2':
3419 switch (opP->reg)
3420 {
3421 case TC:
3422 tmpreg = 0;
3423 break;
3424 case CAL:
3425 tmpreg = 4;
3426 break;
3427 case VAL:
3428 tmpreg = 5;
3429 break;
3430 case SCC:
3431 tmpreg = 6;
3432 break;
3433 case AC:
3434 tmpreg = 7;
3435 break;
3436 default:
3437 abort ();
3438 }
3439 install_operand (s[1], tmpreg);
3440 break;
3441
3442 case 'V':
3443 if (opP->reg == VAL)
3444 break;
3445 abort ();
3446
3447 case 'W':
3448 switch (opP->reg)
3449 {
3450 case DRP:
3451 tmpreg = 1;
3452 break;
3453 case SRP:
3454 tmpreg = 2;
3455 break;
3456 case CRP:
3457 tmpreg = 3;
3458 break;
3459 default:
3460 abort ();
3461 }
3462 install_operand (s[1], tmpreg);
3463 break;
3464
3465 case 'X':
3466 switch (opP->reg)
3467 {
3468 case BAD:
3469 case BAD + 1:
3470 case BAD + 2:
3471 case BAD + 3:
3472 case BAD + 4:
3473 case BAD + 5:
3474 case BAD + 6:
3475 case BAD + 7:
3476 tmpreg = (4 << 10) | ((opP->reg - BAD) << 2);
3477 break;
3478
3479 case BAC:
3480 case BAC + 1:
3481 case BAC + 2:
3482 case BAC + 3:
3483 case BAC + 4:
3484 case BAC + 5:
3485 case BAC + 6:
3486 case BAC + 7:
3487 tmpreg = (5 << 10) | ((opP->reg - BAC) << 2);
3488 break;
3489
3490 default:
3491 abort ();
3492 }
3493 install_operand (s[1], tmpreg);
3494 break;
3495 case 'Y':
3496 know (opP->reg == PSR);
3497 break;
3498 case 'Z':
3499 know (opP->reg == PCSR);
3500 break;
3501 #endif /* m68851 */
3502 case '3':
3503 switch (opP->reg)
3504 {
3505 case TT0:
3506 tmpreg = 2;
3507 break;
3508 case TT1:
3509 tmpreg = 3;
3510 break;
3511 default:
3512 abort ();
3513 }
3514 install_operand (s[1], tmpreg);
3515 break;
3516 case 't':
3517 tmpreg = get_num (&opP->disp, 20);
3518 install_operand (s[1], tmpreg);
3519 break;
3520 case '_': /* used only for move16 absolute 32-bit address. */
3521 if (isvar (&opP->disp))
3522 add_fix ('l', &opP->disp, 0, 0);
3523 tmpreg = get_num (&opP->disp, 90);
3524 addword (tmpreg >> 16);
3525 addword (tmpreg & 0xFFFF);
3526 break;
3527 case 'u':
3528 install_operand (s[1], opP->reg - DATA0L);
3529 opP->reg -= (DATA0L);
3530 opP->reg &= 0x0F; /* remove upper/lower bit. */
3531 break;
3532 case 'x':
3533 tmpreg = get_num (&opP->disp, 80);
3534 if (tmpreg == -1)
3535 tmpreg = 0;
3536 install_operand (s[1], tmpreg);
3537 break;
3538 case 'j':
3539 tmpreg = get_num (&opP->disp, 10);
3540 install_operand (s[1], tmpreg - 1);
3541 break;
3542 case 'K':
3543 tmpreg = get_num (&opP->disp, 65);
3544 install_operand (s[1], tmpreg);
3545 break;
3546 default:
3547 abort ();
3548 }
3549 }
3550
3551 /* By the time whe get here (FINALLY) the_ins contains the complete
3552 instruction, ready to be emitted. . . */
3553 }
3554
3555 static int
3556 reverse_16_bits (int in)
3557 {
3558 int out = 0;
3559 int n;
3560
3561 static int mask[16] =
3562 {
3563 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
3564 0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000, 0x8000
3565 };
3566 for (n = 0; n < 16; n++)
3567 {
3568 if (in & mask[n])
3569 out |= mask[15 - n];
3570 }
3571 return out;
3572 } /* reverse_16_bits() */
3573
3574 static int
3575 reverse_8_bits (int in)
3576 {
3577 int out = 0;
3578 int n;
3579
3580 static int mask[8] =
3581 {
3582 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
3583 };
3584
3585 for (n = 0; n < 8; n++)
3586 {
3587 if (in & mask[n])
3588 out |= mask[7 - n];
3589 }
3590 return out;
3591 } /* reverse_8_bits() */
3592
3593 /* Cause an extra frag to be generated here, inserting up to
3594 FRAG_VAR_SIZE bytes. TYPE is the subtype of the frag to be
3595 generated; its primary type is rs_machine_dependent.
3596
3597 The TYPE parameter is also used by md_convert_frag_1 and
3598 md_estimate_size_before_relax. The appropriate type of fixup will
3599 be emitted by md_convert_frag_1.
3600
3601 ADD becomes the FR_SYMBOL field of the frag, and OFF the FR_OFFSET. */
3602 static void
3603 install_operand (int mode, int val)
3604 {
3605 switch (mode)
3606 {
3607 case 's':
3608 the_ins.opcode[0] |= val & 0xFF; /* JF FF is for M kludge. */
3609 break;
3610 case 'd':
3611 the_ins.opcode[0] |= val << 9;
3612 break;
3613 case 'E':
3614 the_ins.opcode[1] |= val << 9;
3615 break;
3616 case '1':
3617 the_ins.opcode[1] |= val << 12;
3618 break;
3619 case '2':
3620 the_ins.opcode[1] |= val << 6;
3621 break;
3622 case '3':
3623 the_ins.opcode[1] |= val;
3624 break;
3625 case '4':
3626 the_ins.opcode[2] |= val << 12;
3627 break;
3628 case '5':
3629 the_ins.opcode[2] |= val << 6;
3630 break;
3631 case '6':
3632 /* DANGER! This is a hack to force cas2l and cas2w cmds to be
3633 three words long! */
3634 the_ins.numo++;
3635 the_ins.opcode[2] |= val;
3636 break;
3637 case '7':
3638 the_ins.opcode[1] |= val << 7;
3639 break;
3640 case '8':
3641 the_ins.opcode[1] |= val << 10;
3642 break;
3643 #ifndef NO_68851
3644 case '9':
3645 the_ins.opcode[1] |= val << 5;
3646 break;
3647 #endif
3648
3649 case 't':
3650 the_ins.opcode[1] |= (val << 10) | (val << 7);
3651 break;
3652 case 'D':
3653 the_ins.opcode[1] |= (val << 12) | val;
3654 break;
3655 case 'g':
3656 the_ins.opcode[0] |= val = 0xff;
3657 break;
3658 case 'i':
3659 the_ins.opcode[0] |= val << 9;
3660 break;
3661 case 'C':
3662 the_ins.opcode[1] |= val;
3663 break;
3664 case 'j':
3665 the_ins.opcode[1] |= val;
3666 the_ins.numo++; /* What a hack. */
3667 break;
3668 case 'k':
3669 the_ins.opcode[1] |= val << 4;
3670 break;
3671 case 'b':
3672 case 'w':
3673 case 'W':
3674 case 'l':
3675 break;
3676 case 'e':
3677 the_ins.opcode[0] |= (val << 6);
3678 break;
3679 case 'L':
3680 the_ins.opcode[1] = (val >> 16);
3681 the_ins.opcode[2] = val & 0xffff;
3682 break;
3683 case 'm':
3684 the_ins.opcode[0] |= ((val & 0x8) << (6 - 3));
3685 the_ins.opcode[0] |= ((val & 0x7) << 9);
3686 the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
3687 break;
3688 case 'n': /* MAC/EMAC Rx on !load. */
3689 the_ins.opcode[0] |= ((val & 0x8) << (6 - 3));
3690 the_ins.opcode[0] |= ((val & 0x7) << 9);
3691 the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
3692 break;
3693 case 'o': /* MAC/EMAC Rx on load. */
3694 the_ins.opcode[1] |= val << 12;
3695 the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
3696 break;
3697 case 'M': /* MAC/EMAC Ry on !load. */
3698 the_ins.opcode[0] |= (val & 0xF);
3699 the_ins.opcode[1] |= ((val & 0x10) << (6 - 4));
3700 break;
3701 case 'N': /* MAC/EMAC Ry on load. */
3702 the_ins.opcode[1] |= (val & 0xF);
3703 the_ins.opcode[1] |= ((val & 0x10) << (6 - 4));
3704 break;
3705 case 'h':
3706 the_ins.opcode[1] |= ((val != 1) << 10);
3707 break;
3708 case 'F':
3709 the_ins.opcode[0] |= ((val & 0x3) << 9);
3710 break;
3711 case 'f':
3712 the_ins.opcode[0] |= ((val & 0x3) << 0);
3713 break;
3714 case 'G': /* EMAC accumulator in a EMAC load instruction. */
3715 the_ins.opcode[0] |= ((~val & 0x1) << 7);
3716 the_ins.opcode[1] |= ((val & 0x2) << (4 - 1));
3717 break;
3718 case 'H': /* EMAC accumulator in a EMAC non-load instruction. */
3719 the_ins.opcode[0] |= ((val & 0x1) << 7);
3720 the_ins.opcode[1] |= ((val & 0x2) << (4 - 1));
3721 break;
3722 case 'I':
3723 the_ins.opcode[1] |= ((val & 0x3) << 9);
3724 break;
3725 case ']':
3726 the_ins.opcode[0] |= (val & 0x1) <<10;
3727 break;
3728 case 'c':
3729 default:
3730 as_fatal (_("failed sanity check."));
3731 }
3732 }
3733
3734 static void
3735 install_gen_operand (int mode, int val)
3736 {
3737 switch (mode)
3738 {
3739 case '/': /* Special for mask loads for mac/msac insns with
3740 possible mask; trailing_ampersend set in bit 8. */
3741 the_ins.opcode[0] |= (val & 0x3f);
3742 the_ins.opcode[1] |= (((val & 0x100) >> 8) << 5);
3743 break;
3744 case 's':
3745 the_ins.opcode[0] |= val;
3746 break;
3747 case 'd':
3748 /* This is a kludge!!! */
3749 the_ins.opcode[0] |= (val & 0x07) << 9 | (val & 0x38) << 3;
3750 break;
3751 case 'b':
3752 case 'w':
3753 case 'l':
3754 case 'f':
3755 case 'F':
3756 case 'x':
3757 case 'p':
3758 the_ins.opcode[0] |= val;
3759 break;
3760 /* more stuff goes here. */
3761 default:
3762 as_fatal (_("failed sanity check."));
3763 }
3764 }
3765
3766 /* Verify that we have some number of paren pairs, do m68k_ip_op(), and
3767 then deal with the bitfield hack. */
3768
3769 static char *
3770 crack_operand (char *str, struct m68k_op *opP)
3771 {
3772 register int parens;
3773 register int c;
3774 register char *beg_str;
3775 int inquote = 0;
3776
3777 if (!str)
3778 {
3779 return str;
3780 }
3781 beg_str = str;
3782 for (parens = 0; *str && (parens > 0 || inquote || notend (str)); str++)
3783 {
3784 if (! inquote)
3785 {
3786 if (*str == '(')
3787 parens++;
3788 else if (*str == ')')
3789 {
3790 if (!parens)
3791 { /* ERROR. */
3792 opP->error = _("Extra )");
3793 return str;
3794 }
3795 --parens;
3796 }
3797 }
3798 if (flag_mri && *str == '\'')
3799 inquote = ! inquote;
3800 }
3801 if (!*str && parens)
3802 { /* ERROR. */
3803 opP->error = _("Missing )");
3804 return str;
3805 }
3806 c = *str;
3807 *str = '\0';
3808 if (m68k_ip_op (beg_str, opP) != 0)
3809 {
3810 *str = c;
3811 return str;
3812 }
3813 *str = c;
3814 if (c == '}')
3815 c = *++str; /* JF bitfield hack. */
3816 if (c)
3817 {
3818 c = *++str;
3819 if (!c)
3820 as_bad (_("Missing operand"));
3821 }
3822
3823 /* Detect MRI REG symbols and convert them to REGLSTs. */
3824 if (opP->mode == CONTROL && (int)opP->reg < 0)
3825 {
3826 opP->mode = REGLST;
3827 opP->mask = ~(int)opP->reg;
3828 opP->reg = 0;
3829 }
3830
3831 return str;
3832 }
3833
3834 /* This is the guts of the machine-dependent assembler. STR points to a
3835 machine dependent instruction. This function is supposed to emit
3836 the frags/bytes it assembles to.
3837 */
3838
3839 static void
3840 insert_reg (const char *regname, int regnum)
3841 {
3842 char buf[100];
3843 int i;
3844
3845 #ifdef REGISTER_PREFIX
3846 if (!flag_reg_prefix_optional)
3847 {
3848 buf[0] = REGISTER_PREFIX;
3849 strcpy (buf + 1, regname);
3850 regname = buf;
3851 }
3852 #endif
3853
3854 symbol_table_insert (symbol_new (regname, reg_section, regnum,
3855 &zero_address_frag));
3856
3857 for (i = 0; regname[i]; i++)
3858 buf[i] = TOUPPER (regname[i]);
3859 buf[i] = '\0';
3860
3861 symbol_table_insert (symbol_new (buf, reg_section, regnum,
3862 &zero_address_frag));
3863 }
3864
3865 struct init_entry
3866 {
3867 const char *name;
3868 int number;
3869 };
3870
3871 static const struct init_entry init_table[] =
3872 {
3873 { "d0", DATA0 },
3874 { "d1", DATA1 },
3875 { "d2", DATA2 },
3876 { "d3", DATA3 },
3877 { "d4", DATA4 },
3878 { "d5", DATA5 },
3879 { "d6", DATA6 },
3880 { "d7", DATA7 },
3881 { "a0", ADDR0 },
3882 { "a1", ADDR1 },
3883 { "a2", ADDR2 },
3884 { "a3", ADDR3 },
3885 { "a4", ADDR4 },
3886 { "a5", ADDR5 },
3887 { "a6", ADDR6 },
3888 { "fp", ADDR6 },
3889 { "a7", ADDR7 },
3890 { "sp", ADDR7 },
3891 { "ssp", ADDR7 },
3892 { "fp0", FP0 },
3893 { "fp1", FP1 },
3894 { "fp2", FP2 },
3895 { "fp3", FP3 },
3896 { "fp4", FP4 },
3897 { "fp5", FP5 },
3898 { "fp6", FP6 },
3899 { "fp7", FP7 },
3900 { "fpi", FPI },
3901 { "fpiar", FPI },
3902 { "fpc", FPI },
3903 { "fps", FPS },
3904 { "fpsr", FPS },
3905 { "fpc", FPC },
3906 { "fpcr", FPC },
3907 { "control", FPC },
3908 { "status", FPS },
3909 { "iaddr", FPI },
3910
3911 { "cop0", COP0 },
3912 { "cop1", COP1 },
3913 { "cop2", COP2 },
3914 { "cop3", COP3 },
3915 { "cop4", COP4 },
3916 { "cop5", COP5 },
3917 { "cop6", COP6 },
3918 { "cop7", COP7 },
3919 { "pc", PC },
3920 { "zpc", ZPC },
3921 { "sr", SR },
3922
3923 { "ccr", CCR },
3924 { "cc", CCR },
3925
3926 { "acc", ACC },
3927 { "acc0", ACC },
3928 { "acc1", ACC1 },
3929 { "acc2", ACC2 },
3930 { "acc3", ACC3 },
3931 { "accext01", ACCEXT01 },
3932 { "accext23", ACCEXT23 },
3933 { "macsr", MACSR },
3934 { "mask", MASK },
3935
3936 /* Control registers. */
3937 { "sfc", SFC }, /* Source Function Code. */
3938 { "sfcr", SFC },
3939 { "dfc", DFC }, /* Destination Function Code. */
3940 { "dfcr", DFC },
3941 { "cacr", CACR }, /* Cache Control Register. */
3942 { "caar", CAAR }, /* Cache Address Register. */
3943
3944 { "usp", USP }, /* User Stack Pointer. */
3945 { "vbr", VBR }, /* Vector Base Register. */
3946 { "msp", MSP }, /* Master Stack Pointer. */
3947 { "isp", ISP }, /* Interrupt Stack Pointer. */
3948
3949 { "itt0", ITT0 }, /* Instruction Transparent Translation Reg 0. */
3950 { "itt1", ITT1 }, /* Instruction Transparent Translation Reg 1. */
3951 { "dtt0", DTT0 }, /* Data Transparent Translation Register 0. */
3952 { "dtt1", DTT1 }, /* Data Transparent Translation Register 1. */
3953
3954 /* 68ec040 versions of same */
3955 { "iacr0", ITT0 }, /* Instruction Access Control Register 0. */
3956 { "iacr1", ITT1 }, /* Instruction Access Control Register 0. */
3957 { "dacr0", DTT0 }, /* Data Access Control Register 0. */
3958 { "dacr1", DTT1 }, /* Data Access Control Register 0. */
3959
3960 /* Coldfire versions of same. The ColdFire programmer's reference
3961 manual indicated that the order is 2,3,0,1, but Ken Rose
3962 <rose@netcom.com> says that 0,1,2,3 is the correct order. */
3963 { "acr0", ACR0 }, /* Access Control Unit 0. */
3964 { "acr1", ACR1 }, /* Access Control Unit 1. */
3965 { "acr2", ACR2 }, /* Access Control Unit 2. */
3966 { "acr3", ACR3 }, /* Access Control Unit 3. */
3967
3968 { "tc", TC }, /* MMU Translation Control Register. */
3969 { "tcr", TC },
3970 { "asid", ASID },
3971
3972 { "mmusr", MMUSR }, /* MMU Status Register. */
3973 { "srp", SRP }, /* User Root Pointer. */
3974 { "urp", URP }, /* Supervisor Root Pointer. */
3975
3976 { "buscr", BUSCR },
3977 { "mmubar", MMUBAR },
3978 { "pcr", PCR },
3979
3980 { "rombar", ROMBAR }, /* ROM Base Address Register. */
3981 { "rambar0", RAMBAR0 }, /* ROM Base Address Register. */
3982 { "rambar1", RAMBAR1 }, /* ROM Base Address Register. */
3983 { "mbar", MBAR }, /* Module Base Address Register. */
3984
3985 { "mbar0", MBAR0 }, /* mcfv4e registers. */
3986 { "mbar1", MBAR1 }, /* mcfv4e registers. */
3987 { "rombar0", ROMBAR0 }, /* mcfv4e registers. */
3988 { "rombar1", ROMBAR1 }, /* mcfv4e registers. */
3989 { "mpcr", MPCR }, /* mcfv4e registers. */
3990 { "edrambar", EDRAMBAR }, /* mcfv4e registers. */
3991 { "secmbar", SECMBAR }, /* mcfv4e registers. */
3992 { "asid", TC }, /* mcfv4e registers. */
3993 { "mmubar", BUSCR }, /* mcfv4e registers. */
3994 { "pcr1u0", PCR1U0 }, /* mcfv4e registers. */
3995 { "pcr1l0", PCR1L0 }, /* mcfv4e registers. */
3996 { "pcr2u0", PCR2U0 }, /* mcfv4e registers. */
3997 { "pcr2l0", PCR2L0 }, /* mcfv4e registers. */
3998 { "pcr3u0", PCR3U0 }, /* mcfv4e registers. */
3999 { "pcr3l0", PCR3L0 }, /* mcfv4e registers. */
4000 { "pcr1u1", PCR1U1 }, /* mcfv4e registers. */
4001 { "pcr1l1", PCR1L1 }, /* mcfv4e registers. */
4002 { "pcr2u1", PCR2U1 }, /* mcfv4e registers. */
4003 { "pcr2l1", PCR2L1 }, /* mcfv4e registers. */
4004 { "pcr3u1", PCR3U1 }, /* mcfv4e registers. */
4005 { "pcr3l1", PCR3L1 }, /* mcfv4e registers. */
4006
4007 { "flashbar", FLASHBAR }, /* mcf528x registers. */
4008 { "rambar", RAMBAR }, /* mcf528x registers. */
4009
4010 { "mbar2", MBAR2 }, /* mcf5249 registers. */
4011
4012 { "cac", CAC }, /* fido registers. */
4013 { "mbb", MBO }, /* fido registers (obsolete). */
4014 { "mbo", MBO }, /* fido registers. */
4015 /* End of control registers. */
4016
4017 { "ac", AC },
4018 { "bc", BC },
4019 { "cal", CAL },
4020 { "crp", CRP },
4021 { "drp", DRP },
4022 { "pcsr", PCSR },
4023 { "psr", PSR },
4024 { "scc", SCC },
4025 { "val", VAL },
4026 { "bad0", BAD0 },
4027 { "bad1", BAD1 },
4028 { "bad2", BAD2 },
4029 { "bad3", BAD3 },
4030 { "bad4", BAD4 },
4031 { "bad5", BAD5 },
4032 { "bad6", BAD6 },
4033 { "bad7", BAD7 },
4034 { "bac0", BAC0 },
4035 { "bac1", BAC1 },
4036 { "bac2", BAC2 },
4037 { "bac3", BAC3 },
4038 { "bac4", BAC4 },
4039 { "bac5", BAC5 },
4040 { "bac6", BAC6 },
4041 { "bac7", BAC7 },
4042
4043 { "ic", IC },
4044 { "dc", DC },
4045 { "nc", NC },
4046
4047 { "tt0", TT0 },
4048 { "tt1", TT1 },
4049 /* 68ec030 versions of same. */
4050 { "ac0", TT0 },
4051 { "ac1", TT1 },
4052 /* 68ec030 access control unit, identical to 030 MMU status reg. */
4053 { "acusr", PSR },
4054
4055 /* Suppressed data and address registers. */
4056 { "zd0", ZDATA0 },
4057 { "zd1", ZDATA1 },
4058 { "zd2", ZDATA2 },
4059 { "zd3", ZDATA3 },
4060 { "zd4", ZDATA4 },
4061 { "zd5", ZDATA5 },
4062 { "zd6", ZDATA6 },
4063 { "zd7", ZDATA7 },
4064 { "za0", ZADDR0 },
4065 { "za1", ZADDR1 },
4066 { "za2", ZADDR2 },
4067 { "za3", ZADDR3 },
4068 { "za4", ZADDR4 },
4069 { "za5", ZADDR5 },
4070 { "za6", ZADDR6 },
4071 { "za7", ZADDR7 },
4072
4073 /* Upper and lower data and address registers, used by macw and msacw. */
4074 { "d0l", DATA0L },
4075 { "d1l", DATA1L },
4076 { "d2l", DATA2L },
4077 { "d3l", DATA3L },
4078 { "d4l", DATA4L },
4079 { "d5l", DATA5L },
4080 { "d6l", DATA6L },
4081 { "d7l", DATA7L },
4082
4083 { "a0l", ADDR0L },
4084 { "a1l", ADDR1L },
4085 { "a2l", ADDR2L },
4086 { "a3l", ADDR3L },
4087 { "a4l", ADDR4L },
4088 { "a5l", ADDR5L },
4089 { "a6l", ADDR6L },
4090 { "a7l", ADDR7L },
4091
4092 { "d0u", DATA0U },
4093 { "d1u", DATA1U },
4094 { "d2u", DATA2U },
4095 { "d3u", DATA3U },
4096 { "d4u", DATA4U },
4097 { "d5u", DATA5U },
4098 { "d6u", DATA6U },
4099 { "d7u", DATA7U },
4100
4101 { "a0u", ADDR0U },
4102 { "a1u", ADDR1U },
4103 { "a2u", ADDR2U },
4104 { "a3u", ADDR3U },
4105 { "a4u", ADDR4U },
4106 { "a5u", ADDR5U },
4107 { "a6u", ADDR6U },
4108 { "a7u", ADDR7U },
4109
4110 { 0, 0 }
4111 };
4112
4113 static void
4114 init_regtable (void)
4115 {
4116 int i;
4117 for (i = 0; init_table[i].name; i++)
4118 insert_reg (init_table[i].name, init_table[i].number);
4119 }
4120
4121 void
4122 md_assemble (char *str)
4123 {
4124 const char *er;
4125 short *fromP;
4126 char *toP = NULL;
4127 int m, n = 0;
4128 char *to_beg_P;
4129 int shorts_this_frag;
4130 fixS *fixP;
4131
4132 if (!selected_cpu && !selected_arch)
4133 {
4134 /* We've not selected an architecture yet. Set the default
4135 now. We do this lazily so that an initial .cpu or .arch directive
4136 can specify. */
4137 if (!m68k_set_cpu (TARGET_CPU, 1, 1))
4138 as_bad (_("unrecognized default cpu `%s'"), TARGET_CPU);
4139 }
4140 if (!initialized)
4141 m68k_init_arch ();
4142
4143 /* In MRI mode, the instruction and operands are separated by a
4144 space. Anything following the operands is a comment. The label
4145 has already been removed. */
4146 if (flag_mri)
4147 {
4148 char *s;
4149 int fields = 0;
4150 int infield = 0;
4151 int inquote = 0;
4152
4153 for (s = str; *s != '\0'; s++)
4154 {
4155 if ((*s == ' ' || *s == '\t') && ! inquote)
4156 {
4157 if (infield)
4158 {
4159 ++fields;
4160 if (fields >= 2)
4161 {
4162 *s = '\0';
4163 break;
4164 }
4165 infield = 0;
4166 }
4167 }
4168 else
4169 {
4170 if (! infield)
4171 infield = 1;
4172 if (*s == '\'')
4173 inquote = ! inquote;
4174 }
4175 }
4176 }
4177
4178 memset (&the_ins, '\0', sizeof (the_ins));
4179 m68k_ip (str);
4180 er = the_ins.error;
4181 if (!er)
4182 {
4183 for (n = 0; n < the_ins.numargs; n++)
4184 if (the_ins.operands[n].error)
4185 {
4186 er = the_ins.operands[n].error;
4187 break;
4188 }
4189 }
4190 if (er)
4191 {
4192 as_bad (_("%s -- statement `%s' ignored"), er, str);
4193 return;
4194 }
4195
4196 /* If there is a current label, record that it marks an instruction. */
4197 if (current_label != NULL)
4198 {
4199 current_label->text = 1;
4200 current_label = NULL;
4201 }
4202
4203 #ifdef OBJ_ELF
4204 /* Tie dwarf2 debug info to the address at the start of the insn. */
4205 dwarf2_emit_insn (0);
4206 #endif
4207
4208 if (the_ins.nfrag == 0)
4209 {
4210 /* No frag hacking involved; just put it out. */
4211 toP = frag_more (2 * the_ins.numo);
4212 fromP = &the_ins.opcode[0];
4213 for (m = the_ins.numo; m; --m)
4214 {
4215 md_number_to_chars (toP, (long) (*fromP), 2);
4216 toP += 2;
4217 fromP++;
4218 }
4219 /* Put out symbol-dependent info. */
4220 for (m = 0; m < the_ins.nrel; m++)
4221 {
4222 switch (the_ins.reloc[m].wid)
4223 {
4224 case 'B':
4225 n = 1;
4226 break;
4227 case 'b':
4228 n = 1;
4229 break;
4230 case '3':
4231 n = 1;
4232 break;
4233 case 'w':
4234 case 'W':
4235 n = 2;
4236 break;
4237 case 'l':
4238 n = 4;
4239 break;
4240 default:
4241 as_fatal (_("Don't know how to figure width of %c in md_assemble()"),
4242 the_ins.reloc[m].wid);
4243 }
4244
4245 fixP = fix_new_exp (frag_now,
4246 ((toP - frag_now->fr_literal)
4247 - the_ins.numo * 2 + the_ins.reloc[m].n),
4248 n,
4249 &the_ins.reloc[m].exp,
4250 the_ins.reloc[m].pcrel,
4251 get_reloc_code (n, the_ins.reloc[m].pcrel,
4252 the_ins.reloc[m].pic_reloc));
4253 fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
4254 if (the_ins.reloc[m].wid == 'B')
4255 fixP->fx_signed = 1;
4256 }
4257 return;
4258 }
4259
4260 /* There's some frag hacking. */
4261 {
4262 /* Calculate the max frag size. */
4263 int wid;
4264
4265 wid = 2 * the_ins.fragb[0].fragoff;
4266 for (n = 1; n < the_ins.nfrag; n++)
4267 wid += 2 * (the_ins.numo - the_ins.fragb[n - 1].fragoff);
4268 /* frag_var part. */
4269 wid += FRAG_VAR_SIZE;
4270 /* Make sure the whole insn fits in one chunk, in particular that
4271 the var part is attached, as we access one byte before the
4272 variable frag for byte branches. */
4273 frag_grow (wid);
4274 }
4275
4276 for (n = 0, fromP = &the_ins.opcode[0]; n < the_ins.nfrag; n++)
4277 {
4278 int wid;
4279
4280 if (n == 0)
4281 wid = 2 * the_ins.fragb[n].fragoff;
4282 else
4283 wid = 2 * (the_ins.numo - the_ins.fragb[n - 1].fragoff);
4284 toP = frag_more (wid);
4285 to_beg_P = toP;
4286 shorts_this_frag = 0;
4287 for (m = wid / 2; m; --m)
4288 {
4289 md_number_to_chars (toP, (long) (*fromP), 2);
4290 toP += 2;
4291 fromP++;
4292 shorts_this_frag++;
4293 }
4294 for (m = 0; m < the_ins.nrel; m++)
4295 {
4296 if ((the_ins.reloc[m].n) >= 2 * shorts_this_frag)
4297 {
4298 the_ins.reloc[m].n -= 2 * shorts_this_frag;
4299 break;
4300 }
4301 wid = the_ins.reloc[m].wid;
4302 if (wid == 0)
4303 continue;
4304 the_ins.reloc[m].wid = 0;
4305 wid = (wid == 'b') ? 1 : (wid == 'w') ? 2 : (wid == 'l') ? 4 : 4000;
4306
4307 fixP = fix_new_exp (frag_now,
4308 ((toP - frag_now->fr_literal)
4309 - the_ins.numo * 2 + the_ins.reloc[m].n),
4310 wid,
4311 &the_ins.reloc[m].exp,
4312 the_ins.reloc[m].pcrel,
4313 get_reloc_code (wid, the_ins.reloc[m].pcrel,
4314 the_ins.reloc[m].pic_reloc));
4315 fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
4316 }
4317 (void) frag_var (rs_machine_dependent, FRAG_VAR_SIZE, 0,
4318 (relax_substateT) (the_ins.fragb[n].fragty),
4319 the_ins.fragb[n].fadd, the_ins.fragb[n].foff, to_beg_P);
4320 }
4321 n = (the_ins.numo - the_ins.fragb[n - 1].fragoff);
4322 shorts_this_frag = 0;
4323 if (n)
4324 {
4325 toP = frag_more (n * 2);
4326 while (n--)
4327 {
4328 md_number_to_chars (toP, (long) (*fromP), 2);
4329 toP += 2;
4330 fromP++;
4331 shorts_this_frag++;
4332 }
4333 }
4334 for (m = 0; m < the_ins.nrel; m++)
4335 {
4336 int wid;
4337
4338 wid = the_ins.reloc[m].wid;
4339 if (wid == 0)
4340 continue;
4341 the_ins.reloc[m].wid = 0;
4342 wid = (wid == 'b') ? 1 : (wid == 'w') ? 2 : (wid == 'l') ? 4 : 4000;
4343
4344 fixP = fix_new_exp (frag_now,
4345 ((the_ins.reloc[m].n + toP - frag_now->fr_literal)
4346 - shorts_this_frag * 2),
4347 wid,
4348 &the_ins.reloc[m].exp,
4349 the_ins.reloc[m].pcrel,
4350 get_reloc_code (wid, the_ins.reloc[m].pcrel,
4351 the_ins.reloc[m].pic_reloc));
4352 fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
4353 }
4354 }
4355
4356 /* Comparison function used by qsort to rank the opcode entries by name. */
4357
4358 static int
4359 m68k_compare_opcode (const void * v1, const void * v2)
4360 {
4361 struct m68k_opcode * op1, * op2;
4362 int ret;
4363
4364 if (v1 == v2)
4365 return 0;
4366
4367 op1 = *(struct m68k_opcode **) v1;
4368 op2 = *(struct m68k_opcode **) v2;
4369
4370 /* Compare the two names. If different, return the comparison.
4371 If the same, return the order they are in the opcode table. */
4372 ret = strcmp (op1->name, op2->name);
4373 if (ret)
4374 return ret;
4375 if (op1 < op2)
4376 return -1;
4377 return 1;
4378 }
4379
4380 void
4381 md_begin (void)
4382 {
4383 const struct m68k_opcode *ins;
4384 struct m68k_incant *hack, *slak;
4385 const char *retval = 0; /* Empty string, or error msg text. */
4386 int i;
4387
4388 /* Set up hash tables with 68000 instructions.
4389 similar to what the vax assembler does. */
4390 /* RMS claims the thing to do is take the m68k-opcode.h table, and make
4391 a copy of it at runtime, adding in the information we want but isn't
4392 there. I think it'd be better to have an awk script hack the table
4393 at compile time. Or even just xstr the table and use it as-is. But
4394 my lord ghod hath spoken, so we do it this way. Excuse the ugly var
4395 names. */
4396
4397 if (flag_mri)
4398 {
4399 flag_reg_prefix_optional = 1;
4400 m68k_abspcadd = 1;
4401 if (! m68k_rel32_from_cmdline)
4402 m68k_rel32 = 0;
4403 }
4404
4405 /* First sort the opcode table into alphabetical order to seperate
4406 the order that the assembler wants to see the opcodes from the
4407 order that the disassembler wants to see them. */
4408 m68k_sorted_opcodes = xmalloc (m68k_numopcodes * sizeof (* m68k_sorted_opcodes));
4409 if (!m68k_sorted_opcodes)
4410 as_fatal (_("Internal Error: Can't allocate m68k_sorted_opcodes of size %d"),
4411 m68k_numopcodes * ((int) sizeof (* m68k_sorted_opcodes)));
4412
4413 for (i = m68k_numopcodes; i--;)
4414 m68k_sorted_opcodes[i] = m68k_opcodes + i;
4415
4416 qsort (m68k_sorted_opcodes, m68k_numopcodes,
4417 sizeof (m68k_sorted_opcodes[0]), m68k_compare_opcode);
4418
4419 op_hash = hash_new ();
4420
4421 obstack_begin (&robyn, 4000);
4422 for (i = 0; i < m68k_numopcodes; i++)
4423 {
4424 hack = slak = (struct m68k_incant *) obstack_alloc (&robyn, sizeof (struct m68k_incant));
4425 do
4426 {
4427 ins = m68k_sorted_opcodes[i];
4428
4429 /* We must enter all insns into the table, because .arch and
4430 .cpu directives can change things. */
4431 slak->m_operands = ins->args;
4432 slak->m_arch = ins->arch;
4433 slak->m_opcode = ins->opcode;
4434
4435 /* In most cases we can determine the number of opcode words
4436 by checking the second word of the mask. Unfortunately
4437 some instructions have 2 opcode words, but no fixed bits
4438 in the second word. A leading dot in the operands
4439 string also indicates 2 opcodes. */
4440 if (*slak->m_operands == '.')
4441 {
4442 slak->m_operands++;
4443 slak->m_codenum = 2;
4444 }
4445 else if (ins->match & 0xffffL)
4446 slak->m_codenum = 2;
4447 else
4448 slak->m_codenum = 1;
4449 slak->m_opnum = strlen (slak->m_operands) / 2;
4450
4451 if (i + 1 != m68k_numopcodes
4452 && !strcmp (ins->name, m68k_sorted_opcodes[i + 1]->name))
4453 {
4454 slak->m_next = obstack_alloc (&robyn, sizeof (struct m68k_incant));
4455 i++;
4456 }
4457 else
4458 slak->m_next = 0;
4459 slak = slak->m_next;
4460 }
4461 while (slak);
4462
4463 retval = hash_insert (op_hash, ins->name, (char *) hack);
4464 if (retval)
4465 as_fatal (_("Internal Error: Can't hash %s: %s"), ins->name, retval);
4466 }
4467
4468 for (i = 0; i < m68k_numaliases; i++)
4469 {
4470 const char *name = m68k_opcode_aliases[i].primary;
4471 const char *alias = m68k_opcode_aliases[i].alias;
4472 PTR val = hash_find (op_hash, name);
4473
4474 if (!val)
4475 as_fatal (_("Internal Error: Can't find %s in hash table"), name);
4476 retval = hash_insert (op_hash, alias, val);
4477 if (retval)
4478 as_fatal (_("Internal Error: Can't hash %s: %s"), alias, retval);
4479 }
4480
4481 /* In MRI mode, all unsized branches are variable sized. Normally,
4482 they are word sized. */
4483 if (flag_mri)
4484 {
4485 static struct m68k_opcode_alias mri_aliases[] =
4486 {
4487 { "bhi", "jhi", },
4488 { "bls", "jls", },
4489 { "bcc", "jcc", },
4490 { "bcs", "jcs", },
4491 { "bne", "jne", },
4492 { "beq", "jeq", },
4493 { "bvc", "jvc", },
4494 { "bvs", "jvs", },
4495 { "bpl", "jpl", },
4496 { "bmi", "jmi", },
4497 { "bge", "jge", },
4498 { "blt", "jlt", },
4499 { "bgt", "jgt", },
4500 { "ble", "jle", },
4501 { "bra", "jra", },
4502 { "bsr", "jbsr", },
4503 };
4504
4505 for (i = 0;
4506 i < (int) (sizeof mri_aliases / sizeof mri_aliases[0]);
4507 i++)
4508 {
4509 const char *name = mri_aliases[i].primary;
4510 const char *alias = mri_aliases[i].alias;
4511 PTR val = hash_find (op_hash, name);
4512
4513 if (!val)
4514 as_fatal (_("Internal Error: Can't find %s in hash table"), name);
4515 retval = hash_jam (op_hash, alias, val);
4516 if (retval)
4517 as_fatal (_("Internal Error: Can't hash %s: %s"), alias, retval);
4518 }
4519 }
4520
4521 for (i = 0; i < (int) sizeof (notend_table); i++)
4522 {
4523 notend_table[i] = 0;
4524 alt_notend_table[i] = 0;
4525 }
4526
4527 notend_table[','] = 1;
4528 notend_table['{'] = 1;
4529 notend_table['}'] = 1;
4530 alt_notend_table['a'] = 1;
4531 alt_notend_table['A'] = 1;
4532 alt_notend_table['d'] = 1;
4533 alt_notend_table['D'] = 1;
4534 alt_notend_table['#'] = 1;
4535 alt_notend_table['&'] = 1;
4536 alt_notend_table['f'] = 1;
4537 alt_notend_table['F'] = 1;
4538 #ifdef REGISTER_PREFIX
4539 alt_notend_table[REGISTER_PREFIX] = 1;
4540 #endif
4541
4542 /* We need to put '(' in alt_notend_table to handle
4543 cas2 %d0:%d2,%d3:%d4,(%a0):(%a1) */
4544 alt_notend_table['('] = 1;
4545
4546 /* We need to put '@' in alt_notend_table to handle
4547 cas2 %d0:%d2,%d3:%d4,@(%d0):@(%d1) */
4548 alt_notend_table['@'] = 1;
4549
4550 /* We need to put digits in alt_notend_table to handle
4551 bfextu %d0{24:1},%d0 */
4552 alt_notend_table['0'] = 1;
4553 alt_notend_table['1'] = 1;
4554 alt_notend_table['2'] = 1;
4555 alt_notend_table['3'] = 1;
4556 alt_notend_table['4'] = 1;
4557 alt_notend_table['5'] = 1;
4558 alt_notend_table['6'] = 1;
4559 alt_notend_table['7'] = 1;
4560 alt_notend_table['8'] = 1;
4561 alt_notend_table['9'] = 1;
4562
4563 #ifndef MIT_SYNTAX_ONLY
4564 /* Insert pseudo ops, these have to go into the opcode table since
4565 gas expects pseudo ops to start with a dot. */
4566 {
4567 int n = 0;
4568
4569 while (mote_pseudo_table[n].poc_name)
4570 {
4571 hack = obstack_alloc (&robyn, sizeof (struct m68k_incant));
4572 hash_insert (op_hash,
4573 mote_pseudo_table[n].poc_name, (char *) hack);
4574 hack->m_operands = 0;
4575 hack->m_opnum = n;
4576 n++;
4577 }
4578 }
4579 #endif
4580
4581 init_regtable ();
4582
4583 #ifdef OBJ_ELF
4584 record_alignment (text_section, 2);
4585 record_alignment (data_section, 2);
4586 record_alignment (bss_section, 2);
4587 #endif
4588 }
4589
4590 \f
4591 /* This is called when a label is defined. */
4592
4593 void
4594 m68k_frob_label (symbolS *sym)
4595 {
4596 struct label_line *n;
4597
4598 n = (struct label_line *) xmalloc (sizeof *n);
4599 n->next = labels;
4600 n->label = sym;
4601 as_where (&n->file, &n->line);
4602 n->text = 0;
4603 labels = n;
4604 current_label = n;
4605
4606 #ifdef OBJ_ELF
4607 dwarf2_emit_label (sym);
4608 #endif
4609 }
4610
4611 /* This is called when a value that is not an instruction is emitted. */
4612
4613 void
4614 m68k_flush_pending_output (void)
4615 {
4616 current_label = NULL;
4617 }
4618
4619 /* This is called at the end of the assembly, when the final value of
4620 the label is known. We warn if this is a text symbol aligned at an
4621 odd location. */
4622
4623 void
4624 m68k_frob_symbol (symbolS *sym)
4625 {
4626 if (S_GET_SEGMENT (sym) == reg_section
4627 && (int) S_GET_VALUE (sym) < 0)
4628 {
4629 S_SET_SEGMENT (sym, absolute_section);
4630 S_SET_VALUE (sym, ~(int)S_GET_VALUE (sym));
4631 }
4632 else if ((S_GET_VALUE (sym) & 1) != 0)
4633 {
4634 struct label_line *l;
4635
4636 for (l = labels; l != NULL; l = l->next)
4637 {
4638 if (l->label == sym)
4639 {
4640 if (l->text)
4641 as_warn_where (l->file, l->line,
4642 _("text label `%s' aligned to odd boundary"),
4643 S_GET_NAME (sym));
4644 break;
4645 }
4646 }
4647 }
4648 }
4649 \f
4650 /* This is called if we go in or out of MRI mode because of the .mri
4651 pseudo-op. */
4652
4653 void
4654 m68k_mri_mode_change (int on)
4655 {
4656 if (on)
4657 {
4658 if (! flag_reg_prefix_optional)
4659 {
4660 flag_reg_prefix_optional = 1;
4661 #ifdef REGISTER_PREFIX
4662 init_regtable ();
4663 #endif
4664 }
4665 m68k_abspcadd = 1;
4666 if (! m68k_rel32_from_cmdline)
4667 m68k_rel32 = 0;
4668 }
4669 else
4670 {
4671 if (! reg_prefix_optional_seen)
4672 {
4673 #ifdef REGISTER_PREFIX_OPTIONAL
4674 flag_reg_prefix_optional = REGISTER_PREFIX_OPTIONAL;
4675 #else
4676 flag_reg_prefix_optional = 0;
4677 #endif
4678 #ifdef REGISTER_PREFIX
4679 init_regtable ();
4680 #endif
4681 }
4682 m68k_abspcadd = 0;
4683 if (! m68k_rel32_from_cmdline)
4684 m68k_rel32 = 1;
4685 }
4686 }
4687
4688 char *
4689 md_atof (int type, char *litP, int *sizeP)
4690 {
4691 return ieee_md_atof (type, litP, sizeP, TRUE);
4692 }
4693
4694 void
4695 md_number_to_chars (char *buf, valueT val, int n)
4696 {
4697 number_to_chars_bigendian (buf, val, n);
4698 }
4699
4700 void
4701 md_apply_fix (fixS *fixP, valueT *valP, segT seg ATTRIBUTE_UNUSED)
4702 {
4703 offsetT val = *valP;
4704 addressT upper_limit;
4705 offsetT lower_limit;
4706
4707 /* This is unnecessary but it convinces the native rs6000 compiler
4708 to generate the code we want. */
4709 char *buf = fixP->fx_frag->fr_literal;
4710 buf += fixP->fx_where;
4711 /* End ibm compiler workaround. */
4712
4713 val = SEXT (val);
4714
4715 if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
4716 fixP->fx_done = 1;
4717
4718 #ifdef OBJ_ELF
4719 if (fixP->fx_addsy)
4720 {
4721 memset (buf, 0, fixP->fx_size);
4722 fixP->fx_addnumber = val; /* Remember value for emit_reloc. */
4723
4724 if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
4725 && !S_IS_DEFINED (fixP->fx_addsy)
4726 && !S_IS_WEAK (fixP->fx_addsy))
4727 S_SET_WEAK (fixP->fx_addsy);
4728 return;
4729 }
4730 #elif defined(OBJ_AOUT)
4731 /* PR gas/3041 Do not fix frags referencing a weak symbol. */
4732 if (fixP->fx_addsy && S_IS_WEAK (fixP->fx_addsy))
4733 {
4734 memset (buf, 0, fixP->fx_size);
4735 fixP->fx_addnumber = val; /* Remember value for emit_reloc. */
4736 return;
4737 }
4738 #endif
4739
4740 if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
4741 || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
4742 return;
4743
4744 switch (fixP->fx_size)
4745 {
4746 /* The cast to offsetT below are necessary to make code
4747 correct for machines where ints are smaller than offsetT. */
4748 case 1:
4749 *buf++ = val;
4750 upper_limit = 0x7f;
4751 lower_limit = - (offsetT) 0x80;
4752 break;
4753 case 2:
4754 *buf++ = (val >> 8);
4755 *buf++ = val;
4756 upper_limit = 0x7fff;
4757 lower_limit = - (offsetT) 0x8000;
4758 break;
4759 case 4:
4760 *buf++ = (val >> 24);
4761 *buf++ = (val >> 16);
4762 *buf++ = (val >> 8);
4763 *buf++ = val;
4764 upper_limit = 0x7fffffff;
4765 lower_limit = - (offsetT) 0x7fffffff - 1; /* Avoid constant overflow. */
4766 break;
4767 default:
4768 BAD_CASE (fixP->fx_size);
4769 }
4770
4771 /* Fix up a negative reloc. */
4772 if (fixP->fx_addsy == NULL && fixP->fx_subsy != NULL)
4773 {
4774 fixP->fx_addsy = fixP->fx_subsy;
4775 fixP->fx_subsy = NULL;
4776 fixP->fx_tcbit = 1;
4777 }
4778
4779 /* For non-pc-relative values, it's conceivable we might get something
4780 like "0xff" for a byte field. So extend the upper part of the range
4781 to accept such numbers. We arbitrarily disallow "-0xff" or "0xff+0xff",
4782 so that we can do any range checking at all. */
4783 if (! fixP->fx_pcrel && ! fixP->fx_signed)
4784 upper_limit = upper_limit * 2 + 1;
4785
4786 if ((addressT) val > upper_limit
4787 && (val > 0 || val < lower_limit))
4788 as_bad_where (fixP->fx_file, fixP->fx_line,
4789 _("value %ld out of range"), (long)val);
4790
4791 /* A one byte PC-relative reloc means a short branch. We can't use
4792 a short branch with a value of 0 or -1, because those indicate
4793 different opcodes (branches with longer offsets). fixup_segment
4794 in write.c may have clobbered fx_pcrel, so we need to examine the
4795 reloc type. */
4796 if ((fixP->fx_pcrel
4797 || fixP->fx_r_type == BFD_RELOC_8_PCREL)
4798 && fixP->fx_size == 1
4799 && (fixP->fx_addsy == NULL
4800 || S_IS_DEFINED (fixP->fx_addsy))
4801 && (val == 0 || val == -1))
4802 as_bad_where (fixP->fx_file, fixP->fx_line,
4803 _("invalid byte branch offset"));
4804 }
4805
4806 /* *fragP has been relaxed to its final size, and now needs to have
4807 the bytes inside it modified to conform to the new size There is UGLY
4808 MAGIC here. ..
4809 */
4810 static void
4811 md_convert_frag_1 (fragS *fragP)
4812 {
4813 long disp;
4814 fixS *fixP = NULL;
4815
4816 /* Address in object code of the displacement. */
4817 register int object_address = fragP->fr_fix + fragP->fr_address;
4818
4819 /* Address in gas core of the place to store the displacement. */
4820 /* This convinces the native rs6000 compiler to generate the code we
4821 want. */
4822 register char *buffer_address = fragP->fr_literal;
4823 buffer_address += fragP->fr_fix;
4824 /* End ibm compiler workaround. */
4825
4826 /* The displacement of the address, from current location. */
4827 disp = fragP->fr_symbol ? S_GET_VALUE (fragP->fr_symbol) : 0;
4828 disp = (disp + fragP->fr_offset) - object_address;
4829
4830 switch (fragP->fr_subtype)
4831 {
4832 case TAB (BRANCHBWL, BYTE):
4833 case TAB (BRABSJUNC, BYTE):
4834 case TAB (BRABSJCOND, BYTE):
4835 case TAB (BRANCHBW, BYTE):
4836 case TAB (BRANCHBWPL, BYTE):
4837 know (issbyte (disp));
4838 if (disp == 0)
4839 as_bad_where (fragP->fr_file, fragP->fr_line,
4840 _("short branch with zero offset: use :w"));
4841 fixP = fix_new (fragP, fragP->fr_fix - 1, 1, fragP->fr_symbol,
4842 fragP->fr_offset, 1, RELAX_RELOC_PC8);
4843 fixP->fx_pcrel_adjust = -1;
4844 break;
4845 case TAB (BRANCHBWL, SHORT):
4846 case TAB (BRABSJUNC, SHORT):
4847 case TAB (BRABSJCOND, SHORT):
4848 case TAB (BRANCHBW, SHORT):
4849 case TAB (BRANCHBWPL, SHORT):
4850 fragP->fr_opcode[1] = 0x00;
4851 fixP = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
4852 fragP->fr_offset, 1, RELAX_RELOC_PC16);
4853 fragP->fr_fix += 2;
4854 break;
4855 case TAB (BRANCHBWL, LONG):
4856 fragP->fr_opcode[1] = (char) 0xFF;
4857 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
4858 fragP->fr_offset, 1, RELAX_RELOC_PC32);
4859 fragP->fr_fix += 4;
4860 break;
4861 case TAB (BRANCHBWPL, LONG):
4862 /* Here we are converting an unconditional branch into a pair of
4863 conditional branches, in order to get the range. */
4864 fragP->fr_opcode[0] = 0x66; /* bne */
4865 fragP->fr_opcode[1] = 0xFF;
4866 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
4867 fragP->fr_offset, 1, RELAX_RELOC_PC32);
4868 fixP->fx_file = fragP->fr_file;
4869 fixP->fx_line = fragP->fr_line;
4870 fragP->fr_fix += 4; /* Skip first offset */
4871 buffer_address += 4;
4872 *buffer_address++ = 0x67; /* beq */
4873 *buffer_address++ = 0xff;
4874 fragP->fr_fix += 2; /* Skip second branch opcode */
4875 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
4876 fragP->fr_offset, 1, RELAX_RELOC_PC32);
4877 fragP->fr_fix += 4;
4878 break;
4879 case TAB (BRABSJUNC, LONG):
4880 if (fragP->fr_opcode[0] == 0x61) /* jbsr */
4881 {
4882 if (flag_keep_pcrel)
4883 as_bad_where (fragP->fr_file, fragP->fr_line,
4884 _("Conversion of PC relative BSR to absolute JSR"));
4885 fragP->fr_opcode[0] = 0x4E;
4886 fragP->fr_opcode[1] = (char) 0xB9; /* JSR with ABSL LONG operand. */
4887 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
4888 fragP->fr_offset, 0, RELAX_RELOC_ABS32);
4889 fragP->fr_fix += 4;
4890 }
4891 else if (fragP->fr_opcode[0] == 0x60) /* jbra */
4892 {
4893 if (flag_keep_pcrel)
4894 as_bad_where (fragP->fr_file, fragP->fr_line,
4895 _("Conversion of PC relative branch to absolute jump"));
4896 fragP->fr_opcode[0] = 0x4E;
4897 fragP->fr_opcode[1] = (char) 0xF9; /* JMP with ABSL LONG operand. */
4898 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
4899 fragP->fr_offset, 0, RELAX_RELOC_ABS32);
4900 fragP->fr_fix += 4;
4901 }
4902 else
4903 {
4904 /* This cannot happen, because jbsr and jbra are the only two
4905 unconditional branches. */
4906 abort ();
4907 }
4908 break;
4909 case TAB (BRABSJCOND, LONG):
4910 if (flag_keep_pcrel)
4911 as_bad_where (fragP->fr_file, fragP->fr_line,
4912 _("Conversion of PC relative conditional branch to absolute jump"));
4913
4914 /* Only Bcc 68000 instructions can come here
4915 Change bcc into b!cc/jmp absl long. */
4916 fragP->fr_opcode[0] ^= 0x01; /* Invert bcc. */
4917 fragP->fr_opcode[1] = 0x06; /* Branch offset = 6. */
4918
4919 /* JF: these used to be fr_opcode[2,3], but they may be in a
4920 different frag, in which case referring to them is a no-no.
4921 Only fr_opcode[0,1] are guaranteed to work. */
4922 *buffer_address++ = 0x4e; /* put in jmp long (0x4ef9) */
4923 *buffer_address++ = (char) 0xf9;
4924 fragP->fr_fix += 2; /* Account for jmp instruction. */
4925 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
4926 fragP->fr_offset, 0, RELAX_RELOC_ABS32);
4927 fragP->fr_fix += 4;
4928 break;
4929 case TAB (FBRANCH, SHORT):
4930 know ((fragP->fr_opcode[1] & 0x40) == 0);
4931 fixP = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
4932 fragP->fr_offset, 1, RELAX_RELOC_PC16);
4933 fragP->fr_fix += 2;
4934 break;
4935 case TAB (FBRANCH, LONG):
4936 fragP->fr_opcode[1] |= 0x40; /* Turn on LONG bit. */
4937 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
4938 fragP->fr_offset, 1, RELAX_RELOC_PC32);
4939 fragP->fr_fix += 4;
4940 break;
4941 case TAB (DBCCLBR, SHORT):
4942 case TAB (DBCCABSJ, SHORT):
4943 fixP = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
4944 fragP->fr_offset, 1, RELAX_RELOC_PC16);
4945 fragP->fr_fix += 2;
4946 break;
4947 case TAB (DBCCLBR, LONG):
4948 /* Only DBcc instructions can come here.
4949 Change dbcc into dbcc/bral.
4950 JF: these used to be fr_opcode[2-7], but that's wrong. */
4951 if (flag_keep_pcrel)
4952 as_bad_where (fragP->fr_file, fragP->fr_line,
4953 _("Conversion of DBcc to absolute jump"));
4954
4955 *buffer_address++ = 0x00; /* Branch offset = 4. */
4956 *buffer_address++ = 0x04;
4957 *buffer_address++ = 0x60; /* Put in bra pc+6. */
4958 *buffer_address++ = 0x06;
4959 *buffer_address++ = 0x60; /* Put in bral (0x60ff). */
4960 *buffer_address++ = (char) 0xff;
4961
4962 fragP->fr_fix += 6; /* Account for bra/jmp instructions. */
4963 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
4964 fragP->fr_offset, 1, RELAX_RELOC_PC32);
4965 fragP->fr_fix += 4;
4966 break;
4967 case TAB (DBCCABSJ, LONG):
4968 /* Only DBcc instructions can come here.
4969 Change dbcc into dbcc/jmp.
4970 JF: these used to be fr_opcode[2-7], but that's wrong. */
4971 if (flag_keep_pcrel)
4972 as_bad_where (fragP->fr_file, fragP->fr_line,
4973 _("Conversion of PC relative conditional branch to absolute jump"));
4974
4975 *buffer_address++ = 0x00; /* Branch offset = 4. */
4976 *buffer_address++ = 0x04;
4977 *buffer_address++ = 0x60; /* Put in bra pc + 6. */
4978 *buffer_address++ = 0x06;
4979 *buffer_address++ = 0x4e; /* Put in jmp long (0x4ef9). */
4980 *buffer_address++ = (char) 0xf9;
4981
4982 fragP->fr_fix += 6; /* Account for bra/jmp instructions. */
4983 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
4984 fragP->fr_offset, 0, RELAX_RELOC_ABS32);
4985 fragP->fr_fix += 4;
4986 break;
4987 case TAB (PCREL1632, SHORT):
4988 fragP->fr_opcode[1] &= ~0x3F;
4989 fragP->fr_opcode[1] |= 0x3A; /* 072 - mode 7.2 */
4990 fixP = fix_new (fragP, (int) (fragP->fr_fix), 2, fragP->fr_symbol,
4991 fragP->fr_offset, 1, RELAX_RELOC_PC16);
4992 fragP->fr_fix += 2;
4993 break;
4994 case TAB (PCREL1632, LONG):
4995 /* Already set to mode 7.3; this indicates: PC indirect with
4996 suppressed index, 32-bit displacement. */
4997 *buffer_address++ = 0x01;
4998 *buffer_address++ = 0x70;
4999 fragP->fr_fix += 2;
5000 fixP = fix_new (fragP, (int) (fragP->fr_fix), 4, fragP->fr_symbol,
5001 fragP->fr_offset, 1, RELAX_RELOC_PC32);
5002 fixP->fx_pcrel_adjust = 2;
5003 fragP->fr_fix += 4;
5004 break;
5005 case TAB (PCINDEX, BYTE):
5006 assert (fragP->fr_fix >= 2);
5007 buffer_address[-2] &= ~1;
5008 fixP = fix_new (fragP, fragP->fr_fix - 1, 1, fragP->fr_symbol,
5009 fragP->fr_offset, 1, RELAX_RELOC_PC8);
5010 fixP->fx_pcrel_adjust = 1;
5011 break;
5012 case TAB (PCINDEX, SHORT):
5013 assert (fragP->fr_fix >= 2);
5014 buffer_address[-2] |= 0x1;
5015 buffer_address[-1] = 0x20;
5016 fixP = fix_new (fragP, (int) (fragP->fr_fix), 2, fragP->fr_symbol,
5017 fragP->fr_offset, 1, RELAX_RELOC_PC16);
5018 fixP->fx_pcrel_adjust = 2;
5019 fragP->fr_fix += 2;
5020 break;
5021 case TAB (PCINDEX, LONG):
5022 assert (fragP->fr_fix >= 2);
5023 buffer_address[-2] |= 0x1;
5024 buffer_address[-1] = 0x30;
5025 fixP = fix_new (fragP, (int) (fragP->fr_fix), 4, fragP->fr_symbol,
5026 fragP->fr_offset, 1, RELAX_RELOC_PC32);
5027 fixP->fx_pcrel_adjust = 2;
5028 fragP->fr_fix += 4;
5029 break;
5030 case TAB (ABSTOPCREL, SHORT):
5031 fixP = fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
5032 fragP->fr_offset, 1, RELAX_RELOC_PC16);
5033 fragP->fr_fix += 2;
5034 break;
5035 case TAB (ABSTOPCREL, LONG):
5036 if (flag_keep_pcrel)
5037 as_bad_where (fragP->fr_file, fragP->fr_line,
5038 _("Conversion of PC relative displacement to absolute"));
5039 /* The thing to do here is force it to ABSOLUTE LONG, since
5040 ABSTOPCREL is really trying to shorten an ABSOLUTE address anyway. */
5041 if ((fragP->fr_opcode[1] & 0x3F) != 0x3A)
5042 abort ();
5043 fragP->fr_opcode[1] &= ~0x3F;
5044 fragP->fr_opcode[1] |= 0x39; /* Mode 7.1 */
5045 fixP = fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
5046 fragP->fr_offset, 0, RELAX_RELOC_ABS32);
5047 fragP->fr_fix += 4;
5048 break;
5049 }
5050 if (fixP)
5051 {
5052 fixP->fx_file = fragP->fr_file;
5053 fixP->fx_line = fragP->fr_line;
5054 }
5055 }
5056
5057 void
5058 md_convert_frag (bfd *abfd ATTRIBUTE_UNUSED,
5059 segT sec ATTRIBUTE_UNUSED,
5060 fragS *fragP)
5061 {
5062 md_convert_frag_1 (fragP);
5063 }
5064
5065 /* Force truly undefined symbols to their maximum size, and generally set up
5066 the frag list to be relaxed
5067 */
5068 int
5069 md_estimate_size_before_relax (fragS *fragP, segT segment)
5070 {
5071 /* Handle SZ_UNDEF first, it can be changed to BYTE or SHORT. */
5072 switch (fragP->fr_subtype)
5073 {
5074 case TAB (BRANCHBWL, SZ_UNDEF):
5075 case TAB (BRANCHBWPL, SZ_UNDEF):
5076 case TAB (BRABSJUNC, SZ_UNDEF):
5077 case TAB (BRABSJCOND, SZ_UNDEF):
5078 {
5079 if (S_GET_SEGMENT (fragP->fr_symbol) == segment
5080 && relaxable_symbol (fragP->fr_symbol))
5081 {
5082 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), BYTE);
5083 }
5084 else if (flag_short_refs)
5085 {
5086 /* Symbol is undefined and we want short ref. */
5087 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
5088 }
5089 else
5090 {
5091 /* Symbol is still undefined. Make it LONG. */
5092 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), LONG);
5093 }
5094 break;
5095 }
5096
5097 case TAB (BRANCHBW, SZ_UNDEF):
5098 {
5099 if (S_GET_SEGMENT (fragP->fr_symbol) == segment
5100 && relaxable_symbol (fragP->fr_symbol))
5101 {
5102 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), BYTE);
5103 }
5104 else
5105 {
5106 /* Symbol is undefined and we don't have long branches. */
5107 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
5108 }
5109 break;
5110 }
5111
5112 case TAB (FBRANCH, SZ_UNDEF):
5113 case TAB (DBCCLBR, SZ_UNDEF):
5114 case TAB (DBCCABSJ, SZ_UNDEF):
5115 case TAB (PCREL1632, SZ_UNDEF):
5116 {
5117 if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
5118 && relaxable_symbol (fragP->fr_symbol))
5119 || flag_short_refs)
5120 {
5121 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
5122 }
5123 else
5124 {
5125 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), LONG);
5126 }
5127 break;
5128 }
5129
5130 case TAB (PCINDEX, SZ_UNDEF):
5131 if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
5132 && relaxable_symbol (fragP->fr_symbol)))
5133 {
5134 fragP->fr_subtype = TAB (PCINDEX, BYTE);
5135 }
5136 else
5137 {
5138 fragP->fr_subtype = TAB (PCINDEX, LONG);
5139 }
5140 break;
5141
5142 case TAB (ABSTOPCREL, SZ_UNDEF):
5143 {
5144 if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
5145 && relaxable_symbol (fragP->fr_symbol)))
5146 {
5147 fragP->fr_subtype = TAB (ABSTOPCREL, SHORT);
5148 }
5149 else
5150 {
5151 fragP->fr_subtype = TAB (ABSTOPCREL, LONG);
5152 }
5153 break;
5154 }
5155
5156 default:
5157 break;
5158 }
5159
5160 /* Now that SZ_UNDEF are taken care of, check others. */
5161 switch (fragP->fr_subtype)
5162 {
5163 case TAB (BRANCHBWL, BYTE):
5164 case TAB (BRABSJUNC, BYTE):
5165 case TAB (BRABSJCOND, BYTE):
5166 case TAB (BRANCHBW, BYTE):
5167 /* We can't do a short jump to the next instruction, so in that
5168 case we force word mode. If the symbol is at the start of a
5169 frag, and it is the next frag with any data in it (usually
5170 this is just the next frag, but assembler listings may
5171 introduce empty frags), we must use word mode. */
5172 if (fragP->fr_symbol)
5173 {
5174 fragS *sym_frag;
5175
5176 sym_frag = symbol_get_frag (fragP->fr_symbol);
5177 if (S_GET_VALUE (fragP->fr_symbol) == sym_frag->fr_address)
5178 {
5179 fragS *l;
5180
5181 for (l = fragP->fr_next; l && l != sym_frag; l = l->fr_next)
5182 if (l->fr_fix != 0)
5183 break;
5184 if (l == sym_frag)
5185 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
5186 }
5187 }
5188 break;
5189 default:
5190 break;
5191 }
5192 return md_relax_table[fragP->fr_subtype].rlx_length;
5193 }
5194
5195 #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
5196 /* the bit-field entries in the relocation_info struct plays hell
5197 with the byte-order problems of cross-assembly. So as a hack,
5198 I added this mach. dependent ri twiddler. Ugly, but it gets
5199 you there. -KWK */
5200 /* on m68k: first 4 bytes are normal unsigned long, next three bytes
5201 are symbolnum, most sig. byte first. Last byte is broken up with
5202 bit 7 as pcrel, bits 6 & 5 as length, bit 4 as pcrel, and the lower
5203 nibble as nuthin. (on Sun 3 at least) */
5204 /* Translate the internal relocation information into target-specific
5205 format. */
5206 #ifdef comment
5207 void
5208 md_ri_to_chars (char *the_bytes, struct reloc_info_generic *ri)
5209 {
5210 /* This is easy. */
5211 md_number_to_chars (the_bytes, ri->r_address, 4);
5212 /* Now the fun stuff. */
5213 the_bytes[4] = (ri->r_symbolnum >> 16) & 0x0ff;
5214 the_bytes[5] = (ri->r_symbolnum >> 8) & 0x0ff;
5215 the_bytes[6] = ri->r_symbolnum & 0x0ff;
5216 the_bytes[7] = (((ri->r_pcrel << 7) & 0x80)
5217 | ((ri->r_length << 5) & 0x60)
5218 | ((ri->r_extern << 4) & 0x10));
5219 }
5220
5221 #endif
5222
5223 #endif /* OBJ_AOUT or OBJ_BOUT */
5224
5225 #ifndef WORKING_DOT_WORD
5226 int md_short_jump_size = 4;
5227 int md_long_jump_size = 6;
5228
5229 void
5230 md_create_short_jump (char *ptr, addressT from_addr, addressT to_addr,
5231 fragS *frag ATTRIBUTE_UNUSED,
5232 symbolS *to_symbol ATTRIBUTE_UNUSED)
5233 {
5234 valueT offset;
5235
5236 offset = to_addr - (from_addr + 2);
5237
5238 md_number_to_chars (ptr, (valueT) 0x6000, 2);
5239 md_number_to_chars (ptr + 2, (valueT) offset, 2);
5240 }
5241
5242 void
5243 md_create_long_jump (char *ptr, addressT from_addr, addressT to_addr,
5244 fragS *frag, symbolS *to_symbol)
5245 {
5246 valueT offset;
5247
5248 if (!HAVE_LONG_BRANCH (current_architecture))
5249 {
5250 if (flag_keep_pcrel)
5251 as_fatal (_("Tried to convert PC relative branch to absolute jump"));
5252 offset = to_addr - S_GET_VALUE (to_symbol);
5253 md_number_to_chars (ptr, (valueT) 0x4EF9, 2);
5254 md_number_to_chars (ptr + 2, (valueT) offset, 4);
5255 fix_new (frag, (ptr + 2) - frag->fr_literal, 4, to_symbol, (offsetT) 0,
5256 0, NO_RELOC);
5257 }
5258 else
5259 {
5260 offset = to_addr - (from_addr + 2);
5261 md_number_to_chars (ptr, (valueT) 0x60ff, 2);
5262 md_number_to_chars (ptr + 2, (valueT) offset, 4);
5263 }
5264 }
5265
5266 #endif
5267
5268 /* Different values of OK tell what its OK to return. Things that
5269 aren't OK are an error (what a shock, no?)
5270
5271 0: Everything is OK
5272 10: Absolute 1:8 only
5273 20: Absolute 0:7 only
5274 30: absolute 0:15 only
5275 40: Absolute 0:31 only
5276 50: absolute 0:127 only
5277 55: absolute -64:63 only
5278 60: absolute -128:127 only
5279 65: absolute 0:511 only
5280 70: absolute 0:4095 only
5281 80: absolute -1, 1:7 only
5282 90: No bignums. */
5283
5284 static int
5285 get_num (struct m68k_exp *exp, int ok)
5286 {
5287 if (exp->exp.X_op == O_absent)
5288 {
5289 /* Do the same thing the VAX asm does. */
5290 op (exp) = O_constant;
5291 adds (exp) = 0;
5292 subs (exp) = 0;
5293 offs (exp) = 0;
5294 if (ok == 10)
5295 {
5296 as_warn (_("expression out of range: defaulting to 1"));
5297 offs (exp) = 1;
5298 }
5299 }
5300 else if (exp->exp.X_op == O_constant)
5301 {
5302 switch (ok)
5303 {
5304 case 10:
5305 if ((valueT) TRUNC (offs (exp)) - 1 > 7)
5306 {
5307 as_warn (_("expression out of range: defaulting to 1"));
5308 offs (exp) = 1;
5309 }
5310 break;
5311 case 20:
5312 if ((valueT) TRUNC (offs (exp)) > 7)
5313 goto outrange;
5314 break;
5315 case 30:
5316 if ((valueT) TRUNC (offs (exp)) > 15)
5317 goto outrange;
5318 break;
5319 case 40:
5320 if ((valueT) TRUNC (offs (exp)) > 32)
5321 goto outrange;
5322 break;
5323 case 50:
5324 if ((valueT) TRUNC (offs (exp)) > 127)
5325 goto outrange;
5326 break;
5327 case 55:
5328 if ((valueT) SEXT (offs (exp)) + 64 > 127)
5329 goto outrange;
5330 break;
5331 case 60:
5332 if ((valueT) SEXT (offs (exp)) + 128 > 255)
5333 goto outrange;
5334 break;
5335 case 65:
5336 if ((valueT) TRUNC (offs (exp)) > 511)
5337 goto outrange;
5338 break;
5339 case 70:
5340 if ((valueT) TRUNC (offs (exp)) > 4095)
5341 {
5342 outrange:
5343 as_warn (_("expression out of range: defaulting to 0"));
5344 offs (exp) = 0;
5345 }
5346 break;
5347 case 80:
5348 if ((valueT) TRUNC (offs (exp)) != 0xffffffff
5349 && (valueT) TRUNC (offs (exp)) - 1 > 6)
5350 {
5351 as_warn (_("expression out of range: defaulting to 1"));
5352 offs (exp) = 1;
5353 }
5354 break;
5355 default:
5356 break;
5357 }
5358 }
5359 else if (exp->exp.X_op == O_big)
5360 {
5361 if (offs (exp) <= 0 /* flonum. */
5362 && (ok == 90 /* no bignums */
5363 || (ok > 10 /* Small-int ranges including 0 ok. */
5364 /* If we have a flonum zero, a zero integer should
5365 do as well (e.g., in moveq). */
5366 && generic_floating_point_number.exponent == 0
5367 && generic_floating_point_number.low[0] == 0)))
5368 {
5369 /* HACK! Turn it into a long. */
5370 LITTLENUM_TYPE words[6];
5371
5372 gen_to_words (words, 2, 8L); /* These numbers are magic! */
5373 op (exp) = O_constant;
5374 adds (exp) = 0;
5375 subs (exp) = 0;
5376 offs (exp) = words[1] | (words[0] << 16);
5377 }
5378 else if (ok != 0)
5379 {
5380 op (exp) = O_constant;
5381 adds (exp) = 0;
5382 subs (exp) = 0;
5383 offs (exp) = (ok == 10) ? 1 : 0;
5384 as_warn (_("Can't deal with expression; defaulting to %ld"),
5385 (long) offs (exp));
5386 }
5387 }
5388 else
5389 {
5390 if (ok >= 10 && ok <= 80)
5391 {
5392 op (exp) = O_constant;
5393 adds (exp) = 0;
5394 subs (exp) = 0;
5395 offs (exp) = (ok == 10) ? 1 : 0;
5396 as_warn (_("Can't deal with expression; defaulting to %ld"),
5397 (long) offs (exp));
5398 }
5399 }
5400
5401 if (exp->size != SIZE_UNSPEC)
5402 {
5403 switch (exp->size)
5404 {
5405 case SIZE_UNSPEC:
5406 case SIZE_LONG:
5407 break;
5408 case SIZE_BYTE:
5409 if (!isbyte (offs (exp)))
5410 as_warn (_("expression doesn't fit in BYTE"));
5411 break;
5412 case SIZE_WORD:
5413 if (!isword (offs (exp)))
5414 as_warn (_("expression doesn't fit in WORD"));
5415 break;
5416 }
5417 }
5418
5419 return offs (exp);
5420 }
5421
5422 /* These are the back-ends for the various machine dependent pseudo-ops. */
5423
5424 static void
5425 s_data1 (int ignore ATTRIBUTE_UNUSED)
5426 {
5427 subseg_set (data_section, 1);
5428 demand_empty_rest_of_line ();
5429 }
5430
5431 static void
5432 s_data2 (int ignore ATTRIBUTE_UNUSED)
5433 {
5434 subseg_set (data_section, 2);
5435 demand_empty_rest_of_line ();
5436 }
5437
5438 static void
5439 s_bss (int ignore ATTRIBUTE_UNUSED)
5440 {
5441 /* We don't support putting frags in the BSS segment, we fake it
5442 by marking in_bss, then looking at s_skip for clues. */
5443
5444 subseg_set (bss_section, 0);
5445 demand_empty_rest_of_line ();
5446 }
5447
5448 static void
5449 s_even (int ignore ATTRIBUTE_UNUSED)
5450 {
5451 register int temp;
5452 register long temp_fill;
5453
5454 temp = 1; /* JF should be 2? */
5455 temp_fill = get_absolute_expression ();
5456 if (!need_pass_2) /* Never make frag if expect extra pass. */
5457 frag_align (temp, (int) temp_fill, 0);
5458 demand_empty_rest_of_line ();
5459 record_alignment (now_seg, temp);
5460 }
5461
5462 static void
5463 s_proc (int ignore ATTRIBUTE_UNUSED)
5464 {
5465 demand_empty_rest_of_line ();
5466 }
5467 \f
5468 /* Pseudo-ops handled for MRI compatibility. */
5469
5470 /* This function returns non-zero if the argument is a conditional
5471 pseudo-op. This is called when checking whether a pending
5472 alignment is needed. */
5473
5474 int
5475 m68k_conditional_pseudoop (pseudo_typeS *pop)
5476 {
5477 return (pop->poc_handler == s_mri_if
5478 || pop->poc_handler == s_mri_else);
5479 }
5480
5481 /* Handle an MRI style chip specification. */
5482
5483 static void
5484 mri_chip (void)
5485 {
5486 char *s;
5487 char c;
5488 int i;
5489
5490 s = input_line_pointer;
5491 /* We can't use get_symbol_end since the processor names are not proper
5492 symbols. */
5493 while (is_part_of_name (c = *input_line_pointer++))
5494 ;
5495 *--input_line_pointer = 0;
5496 for (i = 0; m68k_cpus[i].name; i++)
5497 if (strcasecmp (s, m68k_cpus[i].name) == 0)
5498 break;
5499 if (!m68k_cpus[i].name)
5500 {
5501 as_bad (_("%s: unrecognized processor name"), s);
5502 *input_line_pointer = c;
5503 ignore_rest_of_line ();
5504 return;
5505 }
5506 *input_line_pointer = c;
5507
5508 if (*input_line_pointer == '/')
5509 current_architecture = 0;
5510 else
5511 current_architecture &= m68881 | m68851;
5512 current_architecture |= m68k_cpus[i].arch & ~(m68881 | m68851);
5513 control_regs = m68k_cpus[i].control_regs;
5514
5515 while (*input_line_pointer == '/')
5516 {
5517 ++input_line_pointer;
5518 s = input_line_pointer;
5519 /* We can't use get_symbol_end since the processor names are not
5520 proper symbols. */
5521 while (is_part_of_name (c = *input_line_pointer++))
5522 ;
5523 *--input_line_pointer = 0;
5524 if (strcmp (s, "68881") == 0)
5525 current_architecture |= m68881;
5526 else if (strcmp (s, "68851") == 0)
5527 current_architecture |= m68851;
5528 *input_line_pointer = c;
5529 }
5530 }
5531
5532 /* The MRI CHIP pseudo-op. */
5533
5534 static void
5535 s_chip (int ignore ATTRIBUTE_UNUSED)
5536 {
5537 char *stop = NULL;
5538 char stopc;
5539
5540 if (flag_mri)
5541 stop = mri_comment_field (&stopc);
5542 mri_chip ();
5543 if (flag_mri)
5544 mri_comment_end (stop, stopc);
5545 demand_empty_rest_of_line ();
5546 }
5547
5548 /* The MRI FOPT pseudo-op. */
5549
5550 static void
5551 s_fopt (int ignore ATTRIBUTE_UNUSED)
5552 {
5553 SKIP_WHITESPACE ();
5554
5555 if (strncasecmp (input_line_pointer, "ID=", 3) == 0)
5556 {
5557 int temp;
5558
5559 input_line_pointer += 3;
5560 temp = get_absolute_expression ();
5561 if (temp < 0 || temp > 7)
5562 as_bad (_("bad coprocessor id"));
5563 else
5564 m68k_float_copnum = COP0 + temp;
5565 }
5566 else
5567 {
5568 as_bad (_("unrecognized fopt option"));
5569 ignore_rest_of_line ();
5570 return;
5571 }
5572
5573 demand_empty_rest_of_line ();
5574 }
5575
5576 /* The structure used to handle the MRI OPT pseudo-op. */
5577
5578 struct opt_action
5579 {
5580 /* The name of the option. */
5581 const char *name;
5582
5583 /* If this is not NULL, just call this function. The first argument
5584 is the ARG field of this structure, the second argument is
5585 whether the option was negated. */
5586 void (*pfn) (int arg, int on);
5587
5588 /* If this is not NULL, and the PFN field is NULL, set the variable
5589 this points to. Set it to the ARG field if the option was not
5590 negated, and the NOTARG field otherwise. */
5591 int *pvar;
5592
5593 /* The value to pass to PFN or to assign to *PVAR. */
5594 int arg;
5595
5596 /* The value to assign to *PVAR if the option is negated. If PFN is
5597 NULL, and PVAR is not NULL, and ARG and NOTARG are the same, then
5598 the option may not be negated. */
5599 int notarg;
5600 };
5601
5602 /* The table used to handle the MRI OPT pseudo-op. */
5603
5604 static void skip_to_comma (int, int);
5605 static void opt_nest (int, int);
5606 static void opt_chip (int, int);
5607 static void opt_list (int, int);
5608 static void opt_list_symbols (int, int);
5609
5610 static const struct opt_action opt_table[] =
5611 {
5612 { "abspcadd", 0, &m68k_abspcadd, 1, 0 },
5613
5614 /* We do relaxing, so there is little use for these options. */
5615 { "b", 0, 0, 0, 0 },
5616 { "brs", 0, 0, 0, 0 },
5617 { "brb", 0, 0, 0, 0 },
5618 { "brl", 0, 0, 0, 0 },
5619 { "brw", 0, 0, 0, 0 },
5620
5621 { "c", 0, 0, 0, 0 },
5622 { "cex", 0, 0, 0, 0 },
5623 { "case", 0, &symbols_case_sensitive, 1, 0 },
5624 { "cl", 0, 0, 0, 0 },
5625 { "cre", 0, 0, 0, 0 },
5626 { "d", 0, &flag_keep_locals, 1, 0 },
5627 { "e", 0, 0, 0, 0 },
5628 { "f", 0, &flag_short_refs, 1, 0 },
5629 { "frs", 0, &flag_short_refs, 1, 0 },
5630 { "frl", 0, &flag_short_refs, 0, 1 },
5631 { "g", 0, 0, 0, 0 },
5632 { "i", 0, 0, 0, 0 },
5633 { "m", 0, 0, 0, 0 },
5634 { "mex", 0, 0, 0, 0 },
5635 { "mc", 0, 0, 0, 0 },
5636 { "md", 0, 0, 0, 0 },
5637 { "nest", opt_nest, 0, 0, 0 },
5638 { "next", skip_to_comma, 0, 0, 0 },
5639 { "o", 0, 0, 0, 0 },
5640 { "old", 0, 0, 0, 0 },
5641 { "op", skip_to_comma, 0, 0, 0 },
5642 { "pco", 0, 0, 0, 0 },
5643 { "p", opt_chip, 0, 0, 0 },
5644 { "pcr", 0, 0, 0, 0 },
5645 { "pcs", 0, 0, 0, 0 },
5646 { "r", 0, 0, 0, 0 },
5647 { "quick", 0, &m68k_quick, 1, 0 },
5648 { "rel32", 0, &m68k_rel32, 1, 0 },
5649 { "s", opt_list, 0, 0, 0 },
5650 { "t", opt_list_symbols, 0, 0, 0 },
5651 { "w", 0, &flag_no_warnings, 0, 1 },
5652 { "x", 0, 0, 0, 0 }
5653 };
5654
5655 #define OPTCOUNT ((int) (sizeof opt_table / sizeof opt_table[0]))
5656
5657 /* The MRI OPT pseudo-op. */
5658
5659 static void
5660 s_opt (int ignore ATTRIBUTE_UNUSED)
5661 {
5662 do
5663 {
5664 int t;
5665 char *s;
5666 char c;
5667 int i;
5668 const struct opt_action *o;
5669
5670 SKIP_WHITESPACE ();
5671
5672 t = 1;
5673 if (*input_line_pointer == '-')
5674 {
5675 ++input_line_pointer;
5676 t = 0;
5677 }
5678 else if (strncasecmp (input_line_pointer, "NO", 2) == 0)
5679 {
5680 input_line_pointer += 2;
5681 t = 0;
5682 }
5683
5684 s = input_line_pointer;
5685 c = get_symbol_end ();
5686
5687 for (i = 0, o = opt_table; i < OPTCOUNT; i++, o++)
5688 {
5689 if (strcasecmp (s, o->name) == 0)
5690 {
5691 if (o->pfn)
5692 {
5693 /* Restore input_line_pointer now in case the option
5694 takes arguments. */
5695 *input_line_pointer = c;
5696 (*o->pfn) (o->arg, t);
5697 }
5698 else if (o->pvar != NULL)
5699 {
5700 if (! t && o->arg == o->notarg)
5701 as_bad (_("option `%s' may not be negated"), s);
5702 *input_line_pointer = c;
5703 *o->pvar = t ? o->arg : o->notarg;
5704 }
5705 else
5706 *input_line_pointer = c;
5707 break;
5708 }
5709 }
5710 if (i >= OPTCOUNT)
5711 {
5712 as_bad (_("option `%s' not recognized"), s);
5713 *input_line_pointer = c;
5714 }
5715 }
5716 while (*input_line_pointer++ == ',');
5717
5718 /* Move back to terminating character. */
5719 --input_line_pointer;
5720 demand_empty_rest_of_line ();
5721 }
5722
5723 /* Skip ahead to a comma. This is used for OPT options which we do
5724 not support and which take arguments. */
5725
5726 static void
5727 skip_to_comma (int arg ATTRIBUTE_UNUSED, int on ATTRIBUTE_UNUSED)
5728 {
5729 while (*input_line_pointer != ','
5730 && ! is_end_of_line[(unsigned char) *input_line_pointer])
5731 ++input_line_pointer;
5732 }
5733
5734 /* Handle the OPT NEST=depth option. */
5735
5736 static void
5737 opt_nest (int arg ATTRIBUTE_UNUSED, int on ATTRIBUTE_UNUSED)
5738 {
5739 if (*input_line_pointer != '=')
5740 {
5741 as_bad (_("bad format of OPT NEST=depth"));
5742 return;
5743 }
5744
5745 ++input_line_pointer;
5746 max_macro_nest = get_absolute_expression ();
5747 }
5748
5749 /* Handle the OPT P=chip option. */
5750
5751 static void
5752 opt_chip (int arg ATTRIBUTE_UNUSED, int on ATTRIBUTE_UNUSED)
5753 {
5754 if (*input_line_pointer != '=')
5755 {
5756 /* This is just OPT P, which we do not support. */
5757 return;
5758 }
5759
5760 ++input_line_pointer;
5761 mri_chip ();
5762 }
5763
5764 /* Handle the OPT S option. */
5765
5766 static void
5767 opt_list (int arg ATTRIBUTE_UNUSED, int on)
5768 {
5769 listing_list (on);
5770 }
5771
5772 /* Handle the OPT T option. */
5773
5774 static void
5775 opt_list_symbols (int arg ATTRIBUTE_UNUSED, int on)
5776 {
5777 if (on)
5778 listing |= LISTING_SYMBOLS;
5779 else
5780 listing &= ~LISTING_SYMBOLS;
5781 }
5782
5783 /* Handle the MRI REG pseudo-op. */
5784
5785 static void
5786 s_reg (int ignore ATTRIBUTE_UNUSED)
5787 {
5788 char *s;
5789 int c;
5790 struct m68k_op rop;
5791 int mask;
5792 char *stop = NULL;
5793 char stopc;
5794
5795 if (line_label == NULL)
5796 {
5797 as_bad (_("missing label"));
5798 ignore_rest_of_line ();
5799 return;
5800 }
5801
5802 if (flag_mri)
5803 stop = mri_comment_field (&stopc);
5804
5805 SKIP_WHITESPACE ();
5806
5807 s = input_line_pointer;
5808 while (ISALNUM (*input_line_pointer)
5809 #ifdef REGISTER_PREFIX
5810 || *input_line_pointer == REGISTER_PREFIX
5811 #endif
5812 || *input_line_pointer == '/'
5813 || *input_line_pointer == '-')
5814 ++input_line_pointer;
5815 c = *input_line_pointer;
5816 *input_line_pointer = '\0';
5817
5818 if (m68k_ip_op (s, &rop) != 0)
5819 {
5820 if (rop.error == NULL)
5821 as_bad (_("bad register list"));
5822 else
5823 as_bad (_("bad register list: %s"), rop.error);
5824 *input_line_pointer = c;
5825 ignore_rest_of_line ();
5826 return;
5827 }
5828
5829 *input_line_pointer = c;
5830
5831 if (rop.mode == REGLST)
5832 mask = rop.mask;
5833 else if (rop.mode == DREG)
5834 mask = 1 << (rop.reg - DATA0);
5835 else if (rop.mode == AREG)
5836 mask = 1 << (rop.reg - ADDR0 + 8);
5837 else if (rop.mode == FPREG)
5838 mask = 1 << (rop.reg - FP0 + 16);
5839 else if (rop.mode == CONTROL
5840 && rop.reg == FPI)
5841 mask = 1 << 24;
5842 else if (rop.mode == CONTROL
5843 && rop.reg == FPS)
5844 mask = 1 << 25;
5845 else if (rop.mode == CONTROL
5846 && rop.reg == FPC)
5847 mask = 1 << 26;
5848 else
5849 {
5850 as_bad (_("bad register list"));
5851 ignore_rest_of_line ();
5852 return;
5853 }
5854
5855 S_SET_SEGMENT (line_label, reg_section);
5856 S_SET_VALUE (line_label, ~mask);
5857 symbol_set_frag (line_label, &zero_address_frag);
5858
5859 if (flag_mri)
5860 mri_comment_end (stop, stopc);
5861
5862 demand_empty_rest_of_line ();
5863 }
5864
5865 /* This structure is used for the MRI SAVE and RESTORE pseudo-ops. */
5866
5867 struct save_opts
5868 {
5869 struct save_opts *next;
5870 int abspcadd;
5871 int symbols_case_sensitive;
5872 int keep_locals;
5873 int short_refs;
5874 int architecture;
5875 const enum m68k_register *control_regs;
5876 int quick;
5877 int rel32;
5878 int listing;
5879 int no_warnings;
5880 /* FIXME: We don't save OPT S. */
5881 };
5882
5883 /* This variable holds the stack of saved options. */
5884
5885 static struct save_opts *save_stack;
5886
5887 /* The MRI SAVE pseudo-op. */
5888
5889 static void
5890 s_save (int ignore ATTRIBUTE_UNUSED)
5891 {
5892 struct save_opts *s;
5893
5894 s = (struct save_opts *) xmalloc (sizeof (struct save_opts));
5895 s->abspcadd = m68k_abspcadd;
5896 s->symbols_case_sensitive = symbols_case_sensitive;
5897 s->keep_locals = flag_keep_locals;
5898 s->short_refs = flag_short_refs;
5899 s->architecture = current_architecture;
5900 s->control_regs = control_regs;
5901 s->quick = m68k_quick;
5902 s->rel32 = m68k_rel32;
5903 s->listing = listing;
5904 s->no_warnings = flag_no_warnings;
5905
5906 s->next = save_stack;
5907 save_stack = s;
5908
5909 demand_empty_rest_of_line ();
5910 }
5911
5912 /* The MRI RESTORE pseudo-op. */
5913
5914 static void
5915 s_restore (int ignore ATTRIBUTE_UNUSED)
5916 {
5917 struct save_opts *s;
5918
5919 if (save_stack == NULL)
5920 {
5921 as_bad (_("restore without save"));
5922 ignore_rest_of_line ();
5923 return;
5924 }
5925
5926 s = save_stack;
5927 save_stack = s->next;
5928
5929 m68k_abspcadd = s->abspcadd;
5930 symbols_case_sensitive = s->symbols_case_sensitive;
5931 flag_keep_locals = s->keep_locals;
5932 flag_short_refs = s->short_refs;
5933 current_architecture = s->architecture;
5934 control_regs = s->control_regs;
5935 m68k_quick = s->quick;
5936 m68k_rel32 = s->rel32;
5937 listing = s->listing;
5938 flag_no_warnings = s->no_warnings;
5939
5940 free (s);
5941
5942 demand_empty_rest_of_line ();
5943 }
5944
5945 /* Types of MRI structured control directives. */
5946
5947 enum mri_control_type
5948 {
5949 mri_for,
5950 mri_if,
5951 mri_repeat,
5952 mri_while
5953 };
5954
5955 /* This structure is used to stack the MRI structured control
5956 directives. */
5957
5958 struct mri_control_info
5959 {
5960 /* The directive within which this one is enclosed. */
5961 struct mri_control_info *outer;
5962
5963 /* The type of directive. */
5964 enum mri_control_type type;
5965
5966 /* Whether an ELSE has been in an IF. */
5967 int else_seen;
5968
5969 /* The add or sub statement at the end of a FOR. */
5970 char *incr;
5971
5972 /* The label of the top of a FOR or REPEAT loop. */
5973 char *top;
5974
5975 /* The label to jump to for the next iteration, or the else
5976 expression of a conditional. */
5977 char *next;
5978
5979 /* The label to jump to to break out of the loop, or the label past
5980 the end of a conditional. */
5981 char *bottom;
5982 };
5983
5984 /* The stack of MRI structured control directives. */
5985
5986 static struct mri_control_info *mri_control_stack;
5987
5988 /* The current MRI structured control directive index number, used to
5989 generate label names. */
5990
5991 static int mri_control_index;
5992
5993 /* Assemble an instruction for an MRI structured control directive. */
5994
5995 static void
5996 mri_assemble (char *str)
5997 {
5998 char *s;
5999
6000 /* md_assemble expects the opcode to be in lower case. */
6001 for (s = str; *s != ' ' && *s != '\0'; s++)
6002 *s = TOLOWER (*s);
6003
6004 md_assemble (str);
6005 }
6006
6007 /* Generate a new MRI label structured control directive label name. */
6008
6009 static char *
6010 mri_control_label (void)
6011 {
6012 char *n;
6013
6014 n = (char *) xmalloc (20);
6015 sprintf (n, "%smc%d", FAKE_LABEL_NAME, mri_control_index);
6016 ++mri_control_index;
6017 return n;
6018 }
6019
6020 /* Create a new MRI structured control directive. */
6021
6022 static struct mri_control_info *
6023 push_mri_control (enum mri_control_type type)
6024 {
6025 struct mri_control_info *n;
6026
6027 n = (struct mri_control_info *) xmalloc (sizeof (struct mri_control_info));
6028
6029 n->type = type;
6030 n->else_seen = 0;
6031 if (type == mri_if || type == mri_while)
6032 n->top = NULL;
6033 else
6034 n->top = mri_control_label ();
6035 n->next = mri_control_label ();
6036 n->bottom = mri_control_label ();
6037
6038 n->outer = mri_control_stack;
6039 mri_control_stack = n;
6040
6041 return n;
6042 }
6043
6044 /* Pop off the stack of MRI structured control directives. */
6045
6046 static void
6047 pop_mri_control (void)
6048 {
6049 struct mri_control_info *n;
6050
6051 n = mri_control_stack;
6052 mri_control_stack = n->outer;
6053 if (n->top != NULL)
6054 free (n->top);
6055 free (n->next);
6056 free (n->bottom);
6057 free (n);
6058 }
6059
6060 /* Recognize a condition code in an MRI structured control expression. */
6061
6062 static int
6063 parse_mri_condition (int *pcc)
6064 {
6065 char c1, c2;
6066
6067 know (*input_line_pointer == '<');
6068
6069 ++input_line_pointer;
6070 c1 = *input_line_pointer++;
6071 c2 = *input_line_pointer++;
6072
6073 if (*input_line_pointer != '>')
6074 {
6075 as_bad (_("syntax error in structured control directive"));
6076 return 0;
6077 }
6078
6079 ++input_line_pointer;
6080 SKIP_WHITESPACE ();
6081
6082 c1 = TOLOWER (c1);
6083 c2 = TOLOWER (c2);
6084
6085 *pcc = (c1 << 8) | c2;
6086
6087 return 1;
6088 }
6089
6090 /* Parse a single operand in an MRI structured control expression. */
6091
6092 static int
6093 parse_mri_control_operand (int *pcc, char **leftstart, char **leftstop,
6094 char **rightstart, char **rightstop)
6095 {
6096 char *s;
6097
6098 SKIP_WHITESPACE ();
6099
6100 *pcc = -1;
6101 *leftstart = NULL;
6102 *leftstop = NULL;
6103 *rightstart = NULL;
6104 *rightstop = NULL;
6105
6106 if (*input_line_pointer == '<')
6107 {
6108 /* It's just a condition code. */
6109 return parse_mri_condition (pcc);
6110 }
6111
6112 /* Look ahead for the condition code. */
6113 for (s = input_line_pointer; *s != '\0'; ++s)
6114 {
6115 if (*s == '<' && s[1] != '\0' && s[2] != '\0' && s[3] == '>')
6116 break;
6117 }
6118 if (*s == '\0')
6119 {
6120 as_bad (_("missing condition code in structured control directive"));
6121 return 0;
6122 }
6123
6124 *leftstart = input_line_pointer;
6125 *leftstop = s;
6126 if (*leftstop > *leftstart
6127 && ((*leftstop)[-1] == ' ' || (*leftstop)[-1] == '\t'))
6128 --*leftstop;
6129
6130 input_line_pointer = s;
6131 if (! parse_mri_condition (pcc))
6132 return 0;
6133
6134 /* Look ahead for AND or OR or end of line. */
6135 for (s = input_line_pointer; *s != '\0'; ++s)
6136 {
6137 /* We must make sure we don't misinterpret AND/OR at the end of labels!
6138 if d0 <eq> #FOOAND and d1 <ne> #BAROR then
6139 ^^^ ^^ */
6140 if ((s == input_line_pointer
6141 || *(s-1) == ' '
6142 || *(s-1) == '\t')
6143 && ((strncasecmp (s, "AND", 3) == 0
6144 && (s[3] == '.' || ! is_part_of_name (s[3])))
6145 || (strncasecmp (s, "OR", 2) == 0
6146 && (s[2] == '.' || ! is_part_of_name (s[2])))))
6147 break;
6148 }
6149
6150 *rightstart = input_line_pointer;
6151 *rightstop = s;
6152 if (*rightstop > *rightstart
6153 && ((*rightstop)[-1] == ' ' || (*rightstop)[-1] == '\t'))
6154 --*rightstop;
6155
6156 input_line_pointer = s;
6157
6158 return 1;
6159 }
6160
6161 #define MCC(b1, b2) (((b1) << 8) | (b2))
6162
6163 /* Swap the sense of a condition. This changes the condition so that
6164 it generates the same result when the operands are swapped. */
6165
6166 static int
6167 swap_mri_condition (int cc)
6168 {
6169 switch (cc)
6170 {
6171 case MCC ('h', 'i'): return MCC ('c', 's');
6172 case MCC ('l', 's'): return MCC ('c', 'c');
6173 /* <HS> is an alias for <CC>. */
6174 case MCC ('h', 's'):
6175 case MCC ('c', 'c'): return MCC ('l', 's');
6176 /* <LO> is an alias for <CS>. */
6177 case MCC ('l', 'o'):
6178 case MCC ('c', 's'): return MCC ('h', 'i');
6179 case MCC ('p', 'l'): return MCC ('m', 'i');
6180 case MCC ('m', 'i'): return MCC ('p', 'l');
6181 case MCC ('g', 'e'): return MCC ('l', 'e');
6182 case MCC ('l', 't'): return MCC ('g', 't');
6183 case MCC ('g', 't'): return MCC ('l', 't');
6184 case MCC ('l', 'e'): return MCC ('g', 'e');
6185 /* Issue a warning for conditions we can not swap. */
6186 case MCC ('n', 'e'): return MCC ('n', 'e'); // no problem here
6187 case MCC ('e', 'q'): return MCC ('e', 'q'); // also no problem
6188 case MCC ('v', 'c'):
6189 case MCC ('v', 's'):
6190 default :
6191 as_warn (_("Condition <%c%c> in structured control directive can not be encoded correctly"),
6192 (char) (cc >> 8), (char) (cc));
6193 break;
6194 }
6195 return cc;
6196 }
6197
6198 /* Reverse the sense of a condition. */
6199
6200 static int
6201 reverse_mri_condition (int cc)
6202 {
6203 switch (cc)
6204 {
6205 case MCC ('h', 'i'): return MCC ('l', 's');
6206 case MCC ('l', 's'): return MCC ('h', 'i');
6207 /* <HS> is an alias for <CC> */
6208 case MCC ('h', 's'): return MCC ('l', 'o');
6209 case MCC ('c', 'c'): return MCC ('c', 's');
6210 /* <LO> is an alias for <CS> */
6211 case MCC ('l', 'o'): return MCC ('h', 's');
6212 case MCC ('c', 's'): return MCC ('c', 'c');
6213 case MCC ('n', 'e'): return MCC ('e', 'q');
6214 case MCC ('e', 'q'): return MCC ('n', 'e');
6215 case MCC ('v', 'c'): return MCC ('v', 's');
6216 case MCC ('v', 's'): return MCC ('v', 'c');
6217 case MCC ('p', 'l'): return MCC ('m', 'i');
6218 case MCC ('m', 'i'): return MCC ('p', 'l');
6219 case MCC ('g', 'e'): return MCC ('l', 't');
6220 case MCC ('l', 't'): return MCC ('g', 'e');
6221 case MCC ('g', 't'): return MCC ('l', 'e');
6222 case MCC ('l', 'e'): return MCC ('g', 't');
6223 }
6224 return cc;
6225 }
6226
6227 /* Build an MRI structured control expression. This generates test
6228 and branch instructions. It goes to TRUELAB if the condition is
6229 true, and to FALSELAB if the condition is false. Exactly one of
6230 TRUELAB and FALSELAB will be NULL, meaning to fall through. QUAL
6231 is the size qualifier for the expression. EXTENT is the size to
6232 use for the branch. */
6233
6234 static void
6235 build_mri_control_operand (int qual, int cc, char *leftstart, char *leftstop,
6236 char *rightstart, char *rightstop,
6237 const char *truelab, const char *falselab,
6238 int extent)
6239 {
6240 char *buf;
6241 char *s;
6242
6243 if (leftstart != NULL)
6244 {
6245 struct m68k_op leftop, rightop;
6246 char c;
6247
6248 /* Swap the compare operands, if necessary, to produce a legal
6249 m68k compare instruction. Comparing a register operand with
6250 a non-register operand requires the register to be on the
6251 right (cmp, cmpa). Comparing an immediate value with
6252 anything requires the immediate value to be on the left
6253 (cmpi). */
6254
6255 c = *leftstop;
6256 *leftstop = '\0';
6257 (void) m68k_ip_op (leftstart, &leftop);
6258 *leftstop = c;
6259
6260 c = *rightstop;
6261 *rightstop = '\0';
6262 (void) m68k_ip_op (rightstart, &rightop);
6263 *rightstop = c;
6264
6265 if (rightop.mode == IMMED
6266 || ((leftop.mode == DREG || leftop.mode == AREG)
6267 && (rightop.mode != DREG && rightop.mode != AREG)))
6268 {
6269 char *temp;
6270
6271 /* Correct conditional handling:
6272 if #1 <lt> d0 then ;means if (1 < d0)
6273 ...
6274 endi
6275
6276 should assemble to:
6277
6278 cmp #1,d0 if we do *not* swap the operands
6279 bgt true we need the swapped condition!
6280 ble false
6281 true:
6282 ...
6283 false:
6284 */
6285 temp = leftstart;
6286 leftstart = rightstart;
6287 rightstart = temp;
6288 temp = leftstop;
6289 leftstop = rightstop;
6290 rightstop = temp;
6291 }
6292 else
6293 {
6294 cc = swap_mri_condition (cc);
6295 }
6296 }
6297
6298 if (truelab == NULL)
6299 {
6300 cc = reverse_mri_condition (cc);
6301 truelab = falselab;
6302 }
6303
6304 if (leftstart != NULL)
6305 {
6306 buf = (char *) xmalloc (20
6307 + (leftstop - leftstart)
6308 + (rightstop - rightstart));
6309 s = buf;
6310 *s++ = 'c';
6311 *s++ = 'm';
6312 *s++ = 'p';
6313 if (qual != '\0')
6314 *s++ = TOLOWER (qual);
6315 *s++ = ' ';
6316 memcpy (s, leftstart, leftstop - leftstart);
6317 s += leftstop - leftstart;
6318 *s++ = ',';
6319 memcpy (s, rightstart, rightstop - rightstart);
6320 s += rightstop - rightstart;
6321 *s = '\0';
6322 mri_assemble (buf);
6323 free (buf);
6324 }
6325
6326 buf = (char *) xmalloc (20 + strlen (truelab));
6327 s = buf;
6328 *s++ = 'b';
6329 *s++ = cc >> 8;
6330 *s++ = cc & 0xff;
6331 if (extent != '\0')
6332 *s++ = TOLOWER (extent);
6333 *s++ = ' ';
6334 strcpy (s, truelab);
6335 mri_assemble (buf);
6336 free (buf);
6337 }
6338
6339 /* Parse an MRI structured control expression. This generates test
6340 and branch instructions. STOP is where the expression ends. It
6341 goes to TRUELAB if the condition is true, and to FALSELAB if the
6342 condition is false. Exactly one of TRUELAB and FALSELAB will be
6343 NULL, meaning to fall through. QUAL is the size qualifier for the
6344 expression. EXTENT is the size to use for the branch. */
6345
6346 static void
6347 parse_mri_control_expression (char *stop, int qual, const char *truelab,
6348 const char *falselab, int extent)
6349 {
6350 int c;
6351 int cc;
6352 char *leftstart;
6353 char *leftstop;
6354 char *rightstart;
6355 char *rightstop;
6356
6357 c = *stop;
6358 *stop = '\0';
6359
6360 if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
6361 &rightstart, &rightstop))
6362 {
6363 *stop = c;
6364 return;
6365 }
6366
6367 if (strncasecmp (input_line_pointer, "AND", 3) == 0)
6368 {
6369 const char *flab;
6370
6371 if (falselab != NULL)
6372 flab = falselab;
6373 else
6374 flab = mri_control_label ();
6375
6376 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6377 rightstop, (const char *) NULL, flab, extent);
6378
6379 input_line_pointer += 3;
6380 if (*input_line_pointer != '.'
6381 || input_line_pointer[1] == '\0')
6382 qual = '\0';
6383 else
6384 {
6385 qual = input_line_pointer[1];
6386 input_line_pointer += 2;
6387 }
6388
6389 if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
6390 &rightstart, &rightstop))
6391 {
6392 *stop = c;
6393 return;
6394 }
6395
6396 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6397 rightstop, truelab, falselab, extent);
6398
6399 if (falselab == NULL)
6400 colon (flab);
6401 }
6402 else if (strncasecmp (input_line_pointer, "OR", 2) == 0)
6403 {
6404 const char *tlab;
6405
6406 if (truelab != NULL)
6407 tlab = truelab;
6408 else
6409 tlab = mri_control_label ();
6410
6411 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6412 rightstop, tlab, (const char *) NULL, extent);
6413
6414 input_line_pointer += 2;
6415 if (*input_line_pointer != '.'
6416 || input_line_pointer[1] == '\0')
6417 qual = '\0';
6418 else
6419 {
6420 qual = input_line_pointer[1];
6421 input_line_pointer += 2;
6422 }
6423
6424 if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
6425 &rightstart, &rightstop))
6426 {
6427 *stop = c;
6428 return;
6429 }
6430
6431 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6432 rightstop, truelab, falselab, extent);
6433
6434 if (truelab == NULL)
6435 colon (tlab);
6436 }
6437 else
6438 {
6439 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6440 rightstop, truelab, falselab, extent);
6441 }
6442
6443 *stop = c;
6444 if (input_line_pointer != stop)
6445 as_bad (_("syntax error in structured control directive"));
6446 }
6447
6448 /* Handle the MRI IF pseudo-op. This may be a structured control
6449 directive, or it may be a regular assembler conditional, depending
6450 on its operands. */
6451
6452 static void
6453 s_mri_if (int qual)
6454 {
6455 char *s;
6456 int c;
6457 struct mri_control_info *n;
6458
6459 /* A structured control directive must end with THEN with an
6460 optional qualifier. */
6461 s = input_line_pointer;
6462 /* We only accept '*' as introduction of comments if preceded by white space
6463 or at first column of a line (I think this can't actually happen here?)
6464 This is important when assembling:
6465 if d0 <ne> 12(a0,d0*2) then
6466 if d0 <ne> #CONST*20 then. */
6467 while (! (is_end_of_line[(unsigned char) *s]
6468 || (flag_mri
6469 && *s == '*'
6470 && (s == input_line_pointer
6471 || *(s-1) == ' '
6472 || *(s-1) == '\t'))))
6473 ++s;
6474 --s;
6475 while (s > input_line_pointer && (*s == ' ' || *s == '\t'))
6476 --s;
6477
6478 if (s - input_line_pointer > 1
6479 && s[-1] == '.')
6480 s -= 2;
6481
6482 if (s - input_line_pointer < 3
6483 || strncasecmp (s - 3, "THEN", 4) != 0)
6484 {
6485 if (qual != '\0')
6486 {
6487 as_bad (_("missing then"));
6488 ignore_rest_of_line ();
6489 return;
6490 }
6491
6492 /* It's a conditional. */
6493 s_if (O_ne);
6494 return;
6495 }
6496
6497 /* Since this might be a conditional if, this pseudo-op will be
6498 called even if we are supported to be ignoring input. Double
6499 check now. Clobber *input_line_pointer so that ignore_input
6500 thinks that this is not a special pseudo-op. */
6501 c = *input_line_pointer;
6502 *input_line_pointer = 0;
6503 if (ignore_input ())
6504 {
6505 *input_line_pointer = c;
6506 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6507 ++input_line_pointer;
6508 demand_empty_rest_of_line ();
6509 return;
6510 }
6511 *input_line_pointer = c;
6512
6513 n = push_mri_control (mri_if);
6514
6515 parse_mri_control_expression (s - 3, qual, (const char *) NULL,
6516 n->next, s[1] == '.' ? s[2] : '\0');
6517
6518 if (s[1] == '.')
6519 input_line_pointer = s + 3;
6520 else
6521 input_line_pointer = s + 1;
6522
6523 if (flag_mri)
6524 {
6525 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6526 ++input_line_pointer;
6527 }
6528
6529 demand_empty_rest_of_line ();
6530 }
6531
6532 /* Handle the MRI else pseudo-op. If we are currently doing an MRI
6533 structured IF, associate the ELSE with the IF. Otherwise, assume
6534 it is a conditional else. */
6535
6536 static void
6537 s_mri_else (int qual)
6538 {
6539 int c;
6540 char *buf;
6541 char q[2];
6542
6543 if (qual == '\0'
6544 && (mri_control_stack == NULL
6545 || mri_control_stack->type != mri_if
6546 || mri_control_stack->else_seen))
6547 {
6548 s_else (0);
6549 return;
6550 }
6551
6552 c = *input_line_pointer;
6553 *input_line_pointer = 0;
6554 if (ignore_input ())
6555 {
6556 *input_line_pointer = c;
6557 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6558 ++input_line_pointer;
6559 demand_empty_rest_of_line ();
6560 return;
6561 }
6562 *input_line_pointer = c;
6563
6564 if (mri_control_stack == NULL
6565 || mri_control_stack->type != mri_if
6566 || mri_control_stack->else_seen)
6567 {
6568 as_bad (_("else without matching if"));
6569 ignore_rest_of_line ();
6570 return;
6571 }
6572
6573 mri_control_stack->else_seen = 1;
6574
6575 buf = (char *) xmalloc (20 + strlen (mri_control_stack->bottom));
6576 q[0] = TOLOWER (qual);
6577 q[1] = '\0';
6578 sprintf (buf, "bra%s %s", q, mri_control_stack->bottom);
6579 mri_assemble (buf);
6580 free (buf);
6581
6582 colon (mri_control_stack->next);
6583
6584 if (flag_mri)
6585 {
6586 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6587 ++input_line_pointer;
6588 }
6589
6590 demand_empty_rest_of_line ();
6591 }
6592
6593 /* Handle the MRI ENDI pseudo-op. */
6594
6595 static void
6596 s_mri_endi (int ignore ATTRIBUTE_UNUSED)
6597 {
6598 if (mri_control_stack == NULL
6599 || mri_control_stack->type != mri_if)
6600 {
6601 as_bad (_("endi without matching if"));
6602 ignore_rest_of_line ();
6603 return;
6604 }
6605
6606 /* ignore_input will not return true for ENDI, so we don't need to
6607 worry about checking it again here. */
6608
6609 if (! mri_control_stack->else_seen)
6610 colon (mri_control_stack->next);
6611 colon (mri_control_stack->bottom);
6612
6613 pop_mri_control ();
6614
6615 if (flag_mri)
6616 {
6617 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6618 ++input_line_pointer;
6619 }
6620
6621 demand_empty_rest_of_line ();
6622 }
6623
6624 /* Handle the MRI BREAK pseudo-op. */
6625
6626 static void
6627 s_mri_break (int extent)
6628 {
6629 struct mri_control_info *n;
6630 char *buf;
6631 char ex[2];
6632
6633 n = mri_control_stack;
6634 while (n != NULL
6635 && n->type != mri_for
6636 && n->type != mri_repeat
6637 && n->type != mri_while)
6638 n = n->outer;
6639 if (n == NULL)
6640 {
6641 as_bad (_("break outside of structured loop"));
6642 ignore_rest_of_line ();
6643 return;
6644 }
6645
6646 buf = (char *) xmalloc (20 + strlen (n->bottom));
6647 ex[0] = TOLOWER (extent);
6648 ex[1] = '\0';
6649 sprintf (buf, "bra%s %s", ex, n->bottom);
6650 mri_assemble (buf);
6651 free (buf);
6652
6653 if (flag_mri)
6654 {
6655 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6656 ++input_line_pointer;
6657 }
6658
6659 demand_empty_rest_of_line ();
6660 }
6661
6662 /* Handle the MRI NEXT pseudo-op. */
6663
6664 static void
6665 s_mri_next (int extent)
6666 {
6667 struct mri_control_info *n;
6668 char *buf;
6669 char ex[2];
6670
6671 n = mri_control_stack;
6672 while (n != NULL
6673 && n->type != mri_for
6674 && n->type != mri_repeat
6675 && n->type != mri_while)
6676 n = n->outer;
6677 if (n == NULL)
6678 {
6679 as_bad (_("next outside of structured loop"));
6680 ignore_rest_of_line ();
6681 return;
6682 }
6683
6684 buf = (char *) xmalloc (20 + strlen (n->next));
6685 ex[0] = TOLOWER (extent);
6686 ex[1] = '\0';
6687 sprintf (buf, "bra%s %s", ex, n->next);
6688 mri_assemble (buf);
6689 free (buf);
6690
6691 if (flag_mri)
6692 {
6693 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6694 ++input_line_pointer;
6695 }
6696
6697 demand_empty_rest_of_line ();
6698 }
6699
6700 /* Handle the MRI FOR pseudo-op. */
6701
6702 static void
6703 s_mri_for (int qual)
6704 {
6705 const char *varstart, *varstop;
6706 const char *initstart, *initstop;
6707 const char *endstart, *endstop;
6708 const char *bystart, *bystop;
6709 int up;
6710 int by;
6711 int extent;
6712 struct mri_control_info *n;
6713 char *buf;
6714 char *s;
6715 char ex[2];
6716
6717 /* The syntax is
6718 FOR.q var = init { TO | DOWNTO } end [ BY by ] DO.e
6719 */
6720
6721 SKIP_WHITESPACE ();
6722 varstart = input_line_pointer;
6723
6724 /* Look for the '='. */
6725 while (! is_end_of_line[(unsigned char) *input_line_pointer]
6726 && *input_line_pointer != '=')
6727 ++input_line_pointer;
6728 if (*input_line_pointer != '=')
6729 {
6730 as_bad (_("missing ="));
6731 ignore_rest_of_line ();
6732 return;
6733 }
6734
6735 varstop = input_line_pointer;
6736 if (varstop > varstart
6737 && (varstop[-1] == ' ' || varstop[-1] == '\t'))
6738 --varstop;
6739
6740 ++input_line_pointer;
6741
6742 initstart = input_line_pointer;
6743
6744 /* Look for TO or DOWNTO. */
6745 up = 1;
6746 initstop = NULL;
6747 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6748 {
6749 if (strncasecmp (input_line_pointer, "TO", 2) == 0
6750 && ! is_part_of_name (input_line_pointer[2]))
6751 {
6752 initstop = input_line_pointer;
6753 input_line_pointer += 2;
6754 break;
6755 }
6756 if (strncasecmp (input_line_pointer, "DOWNTO", 6) == 0
6757 && ! is_part_of_name (input_line_pointer[6]))
6758 {
6759 initstop = input_line_pointer;
6760 up = 0;
6761 input_line_pointer += 6;
6762 break;
6763 }
6764 ++input_line_pointer;
6765 }
6766 if (initstop == NULL)
6767 {
6768 as_bad (_("missing to or downto"));
6769 ignore_rest_of_line ();
6770 return;
6771 }
6772 if (initstop > initstart
6773 && (initstop[-1] == ' ' || initstop[-1] == '\t'))
6774 --initstop;
6775
6776 SKIP_WHITESPACE ();
6777 endstart = input_line_pointer;
6778
6779 /* Look for BY or DO. */
6780 by = 0;
6781 endstop = NULL;
6782 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6783 {
6784 if (strncasecmp (input_line_pointer, "BY", 2) == 0
6785 && ! is_part_of_name (input_line_pointer[2]))
6786 {
6787 endstop = input_line_pointer;
6788 by = 1;
6789 input_line_pointer += 2;
6790 break;
6791 }
6792 if (strncasecmp (input_line_pointer, "DO", 2) == 0
6793 && (input_line_pointer[2] == '.'
6794 || ! is_part_of_name (input_line_pointer[2])))
6795 {
6796 endstop = input_line_pointer;
6797 input_line_pointer += 2;
6798 break;
6799 }
6800 ++input_line_pointer;
6801 }
6802 if (endstop == NULL)
6803 {
6804 as_bad (_("missing do"));
6805 ignore_rest_of_line ();
6806 return;
6807 }
6808 if (endstop > endstart
6809 && (endstop[-1] == ' ' || endstop[-1] == '\t'))
6810 --endstop;
6811
6812 if (! by)
6813 {
6814 bystart = "#1";
6815 bystop = bystart + 2;
6816 }
6817 else
6818 {
6819 SKIP_WHITESPACE ();
6820 bystart = input_line_pointer;
6821
6822 /* Look for DO. */
6823 bystop = NULL;
6824 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6825 {
6826 if (strncasecmp (input_line_pointer, "DO", 2) == 0
6827 && (input_line_pointer[2] == '.'
6828 || ! is_part_of_name (input_line_pointer[2])))
6829 {
6830 bystop = input_line_pointer;
6831 input_line_pointer += 2;
6832 break;
6833 }
6834 ++input_line_pointer;
6835 }
6836 if (bystop == NULL)
6837 {
6838 as_bad (_("missing do"));
6839 ignore_rest_of_line ();
6840 return;
6841 }
6842 if (bystop > bystart
6843 && (bystop[-1] == ' ' || bystop[-1] == '\t'))
6844 --bystop;
6845 }
6846
6847 if (*input_line_pointer != '.')
6848 extent = '\0';
6849 else
6850 {
6851 extent = input_line_pointer[1];
6852 input_line_pointer += 2;
6853 }
6854
6855 /* We have fully parsed the FOR operands. Now build the loop. */
6856 n = push_mri_control (mri_for);
6857
6858 buf = (char *) xmalloc (50 + (input_line_pointer - varstart));
6859
6860 /* Move init,var. */
6861 s = buf;
6862 *s++ = 'm';
6863 *s++ = 'o';
6864 *s++ = 'v';
6865 *s++ = 'e';
6866 if (qual != '\0')
6867 *s++ = TOLOWER (qual);
6868 *s++ = ' ';
6869 memcpy (s, initstart, initstop - initstart);
6870 s += initstop - initstart;
6871 *s++ = ',';
6872 memcpy (s, varstart, varstop - varstart);
6873 s += varstop - varstart;
6874 *s = '\0';
6875 mri_assemble (buf);
6876
6877 colon (n->top);
6878
6879 /* cmp end,var. */
6880 s = buf;
6881 *s++ = 'c';
6882 *s++ = 'm';
6883 *s++ = 'p';
6884 if (qual != '\0')
6885 *s++ = TOLOWER (qual);
6886 *s++ = ' ';
6887 memcpy (s, endstart, endstop - endstart);
6888 s += endstop - endstart;
6889 *s++ = ',';
6890 memcpy (s, varstart, varstop - varstart);
6891 s += varstop - varstart;
6892 *s = '\0';
6893 mri_assemble (buf);
6894
6895 /* bcc bottom. */
6896 ex[0] = TOLOWER (extent);
6897 ex[1] = '\0';
6898 if (up)
6899 sprintf (buf, "blt%s %s", ex, n->bottom);
6900 else
6901 sprintf (buf, "bgt%s %s", ex, n->bottom);
6902 mri_assemble (buf);
6903
6904 /* Put together the add or sub instruction used by ENDF. */
6905 s = buf;
6906 if (up)
6907 strcpy (s, "add");
6908 else
6909 strcpy (s, "sub");
6910 s += 3;
6911 if (qual != '\0')
6912 *s++ = TOLOWER (qual);
6913 *s++ = ' ';
6914 memcpy (s, bystart, bystop - bystart);
6915 s += bystop - bystart;
6916 *s++ = ',';
6917 memcpy (s, varstart, varstop - varstart);
6918 s += varstop - varstart;
6919 *s = '\0';
6920 n->incr = buf;
6921
6922 if (flag_mri)
6923 {
6924 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6925 ++input_line_pointer;
6926 }
6927
6928 demand_empty_rest_of_line ();
6929 }
6930
6931 /* Handle the MRI ENDF pseudo-op. */
6932
6933 static void
6934 s_mri_endf (int ignore ATTRIBUTE_UNUSED)
6935 {
6936 if (mri_control_stack == NULL
6937 || mri_control_stack->type != mri_for)
6938 {
6939 as_bad (_("endf without for"));
6940 ignore_rest_of_line ();
6941 return;
6942 }
6943
6944 colon (mri_control_stack->next);
6945
6946 mri_assemble (mri_control_stack->incr);
6947
6948 sprintf (mri_control_stack->incr, "bra %s", mri_control_stack->top);
6949 mri_assemble (mri_control_stack->incr);
6950
6951 free (mri_control_stack->incr);
6952
6953 colon (mri_control_stack->bottom);
6954
6955 pop_mri_control ();
6956
6957 if (flag_mri)
6958 {
6959 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6960 ++input_line_pointer;
6961 }
6962
6963 demand_empty_rest_of_line ();
6964 }
6965
6966 /* Handle the MRI REPEAT pseudo-op. */
6967
6968 static void
6969 s_mri_repeat (int ignore ATTRIBUTE_UNUSED)
6970 {
6971 struct mri_control_info *n;
6972
6973 n = push_mri_control (mri_repeat);
6974 colon (n->top);
6975 if (flag_mri)
6976 {
6977 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6978 ++input_line_pointer;
6979 }
6980 demand_empty_rest_of_line ();
6981 }
6982
6983 /* Handle the MRI UNTIL pseudo-op. */
6984
6985 static void
6986 s_mri_until (int qual)
6987 {
6988 char *s;
6989
6990 if (mri_control_stack == NULL
6991 || mri_control_stack->type != mri_repeat)
6992 {
6993 as_bad (_("until without repeat"));
6994 ignore_rest_of_line ();
6995 return;
6996 }
6997
6998 colon (mri_control_stack->next);
6999
7000 for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++)
7001 ;
7002
7003 parse_mri_control_expression (s, qual, (const char *) NULL,
7004 mri_control_stack->top, '\0');
7005
7006 colon (mri_control_stack->bottom);
7007
7008 input_line_pointer = s;
7009
7010 pop_mri_control ();
7011
7012 if (flag_mri)
7013 {
7014 while (! is_end_of_line[(unsigned char) *input_line_pointer])
7015 ++input_line_pointer;
7016 }
7017
7018 demand_empty_rest_of_line ();
7019 }
7020
7021 /* Handle the MRI WHILE pseudo-op. */
7022
7023 static void
7024 s_mri_while (int qual)
7025 {
7026 char *s;
7027
7028 struct mri_control_info *n;
7029
7030 s = input_line_pointer;
7031 /* We only accept '*' as introduction of comments if preceded by white space
7032 or at first column of a line (I think this can't actually happen here?)
7033 This is important when assembling:
7034 while d0 <ne> 12(a0,d0*2) do
7035 while d0 <ne> #CONST*20 do. */
7036 while (! (is_end_of_line[(unsigned char) *s]
7037 || (flag_mri
7038 && *s == '*'
7039 && (s == input_line_pointer
7040 || *(s-1) == ' '
7041 || *(s-1) == '\t'))))
7042 s++;
7043 --s;
7044 while (*s == ' ' || *s == '\t')
7045 --s;
7046 if (s - input_line_pointer > 1
7047 && s[-1] == '.')
7048 s -= 2;
7049 if (s - input_line_pointer < 2
7050 || strncasecmp (s - 1, "DO", 2) != 0)
7051 {
7052 as_bad (_("missing do"));
7053 ignore_rest_of_line ();
7054 return;
7055 }
7056
7057 n = push_mri_control (mri_while);
7058
7059 colon (n->next);
7060
7061 parse_mri_control_expression (s - 1, qual, (const char *) NULL, n->bottom,
7062 s[1] == '.' ? s[2] : '\0');
7063
7064 input_line_pointer = s + 1;
7065 if (*input_line_pointer == '.')
7066 input_line_pointer += 2;
7067
7068 if (flag_mri)
7069 {
7070 while (! is_end_of_line[(unsigned char) *input_line_pointer])
7071 ++input_line_pointer;
7072 }
7073
7074 demand_empty_rest_of_line ();
7075 }
7076
7077 /* Handle the MRI ENDW pseudo-op. */
7078
7079 static void
7080 s_mri_endw (int ignore ATTRIBUTE_UNUSED)
7081 {
7082 char *buf;
7083
7084 if (mri_control_stack == NULL
7085 || mri_control_stack->type != mri_while)
7086 {
7087 as_bad (_("endw without while"));
7088 ignore_rest_of_line ();
7089 return;
7090 }
7091
7092 buf = (char *) xmalloc (20 + strlen (mri_control_stack->next));
7093 sprintf (buf, "bra %s", mri_control_stack->next);
7094 mri_assemble (buf);
7095 free (buf);
7096
7097 colon (mri_control_stack->bottom);
7098
7099 pop_mri_control ();
7100
7101 if (flag_mri)
7102 {
7103 while (! is_end_of_line[(unsigned char) *input_line_pointer])
7104 ++input_line_pointer;
7105 }
7106
7107 demand_empty_rest_of_line ();
7108 }
7109 \f
7110 /* Parse a .cpu directive. */
7111
7112 static void
7113 s_m68k_cpu (int ignored ATTRIBUTE_UNUSED)
7114 {
7115 char saved_char;
7116 char *name;
7117
7118 if (initialized)
7119 {
7120 as_bad (_("already assembled instructions"));
7121 ignore_rest_of_line ();
7122 return;
7123 }
7124
7125 name = input_line_pointer;
7126 while (*input_line_pointer && !ISSPACE(*input_line_pointer))
7127 input_line_pointer++;
7128 saved_char = *input_line_pointer;
7129 *input_line_pointer = 0;
7130
7131 m68k_set_cpu (name, 1, 0);
7132
7133 *input_line_pointer = saved_char;
7134 demand_empty_rest_of_line ();
7135 return;
7136 }
7137
7138 /* Parse a .arch directive. */
7139
7140 static void
7141 s_m68k_arch (int ignored ATTRIBUTE_UNUSED)
7142 {
7143 char saved_char;
7144 char *name;
7145
7146 if (initialized)
7147 {
7148 as_bad (_("already assembled instructions"));
7149 ignore_rest_of_line ();
7150 return;
7151 }
7152
7153 name = input_line_pointer;
7154 while (*input_line_pointer && *input_line_pointer != ','
7155 && !ISSPACE (*input_line_pointer))
7156 input_line_pointer++;
7157 saved_char = *input_line_pointer;
7158 *input_line_pointer = 0;
7159
7160 if (m68k_set_arch (name, 1, 0))
7161 {
7162 /* Scan extensions. */
7163 do
7164 {
7165 *input_line_pointer++ = saved_char;
7166 if (!*input_line_pointer || ISSPACE (*input_line_pointer))
7167 break;
7168 name = input_line_pointer;
7169 while (*input_line_pointer && *input_line_pointer != ','
7170 && !ISSPACE (*input_line_pointer))
7171 input_line_pointer++;
7172 saved_char = *input_line_pointer;
7173 *input_line_pointer = 0;
7174 }
7175 while (m68k_set_extension (name, 1, 0));
7176 }
7177
7178 *input_line_pointer = saved_char;
7179 demand_empty_rest_of_line ();
7180 return;
7181 }
7182 \f
7183 /* Lookup a cpu name in TABLE and return the slot found. Return NULL
7184 if none is found, the caller is responsible for emitting an error
7185 message. If ALLOW_M is non-zero, we allow an initial 'm' on the
7186 cpu name, if it begins with a '6' (possibly skipping an intervening
7187 'c'. We also allow a 'c' in the same place. if NEGATED is
7188 non-zero, we accept a leading 'no-' and *NEGATED is set to true, if
7189 the option is indeed negated. */
7190
7191 static const struct m68k_cpu *
7192 m68k_lookup_cpu (const char *arg, const struct m68k_cpu *table,
7193 int allow_m, int *negated)
7194 {
7195 /* allow negated value? */
7196 if (negated)
7197 {
7198 *negated = 0;
7199
7200 if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-')
7201 {
7202 arg += 3;
7203 *negated = 1;
7204 }
7205 }
7206
7207 /* Remove 'm' or 'mc' prefix from 68k variants. */
7208 if (allow_m)
7209 {
7210 if (arg[0] == 'm')
7211 {
7212 if (arg[1] == '6')
7213 arg += 1;
7214 else if (arg[1] == 'c' && arg[2] == '6')
7215 arg += 2;
7216 }
7217 }
7218 else if (arg[0] == 'c' && arg[1] == '6')
7219 arg += 1;
7220
7221 for (; table->name; table++)
7222 if (!strcmp (arg, table->name))
7223 {
7224 if (table->alias < -1 || table->alias > 1)
7225 as_bad (_("`%s' is deprecated, use `%s'"),
7226 table->name, table[table->alias < 0 ? 1 : -1].name);
7227 return table;
7228 }
7229 return 0;
7230 }
7231
7232 /* Set the cpu, issuing errors if it is unrecognized, or invalid */
7233
7234 static int
7235 m68k_set_cpu (char const *name, int allow_m, int silent)
7236 {
7237 const struct m68k_cpu *cpu;
7238
7239 cpu = m68k_lookup_cpu (name, m68k_cpus, allow_m, NULL);
7240
7241 if (!cpu)
7242 {
7243 if (!silent)
7244 as_bad (_("cpu `%s' unrecognized"), name);
7245 return 0;
7246 }
7247
7248 if (selected_cpu && selected_cpu != cpu)
7249 {
7250 as_bad (_("already selected `%s' processor"),
7251 selected_cpu->name);
7252 return 0;
7253 }
7254 selected_cpu = cpu;
7255 return 1;
7256 }
7257
7258 /* Set the architecture, issuing errors if it is unrecognized, or invalid */
7259
7260 static int
7261 m68k_set_arch (char const *name, int allow_m, int silent)
7262 {
7263 const struct m68k_cpu *arch;
7264
7265 arch = m68k_lookup_cpu (name, m68k_archs, allow_m, NULL);
7266
7267 if (!arch)
7268 {
7269 if (!silent)
7270 as_bad (_("architecture `%s' unrecognized"), name);
7271 return 0;
7272 }
7273
7274 if (selected_arch && selected_arch != arch)
7275 {
7276 as_bad (_("already selected `%s' architecture"),
7277 selected_arch->name);
7278 return 0;
7279 }
7280
7281 selected_arch = arch;
7282 return 1;
7283 }
7284
7285 /* Set the architecture extension, issuing errors if it is
7286 unrecognized, or invalid */
7287
7288 static int
7289 m68k_set_extension (char const *name, int allow_m, int silent)
7290 {
7291 int negated;
7292 const struct m68k_cpu *ext;
7293
7294 ext = m68k_lookup_cpu (name, m68k_extensions, allow_m, &negated);
7295
7296 if (!ext)
7297 {
7298 if (!silent)
7299 as_bad (_("extension `%s' unrecognized"), name);
7300 return 0;
7301 }
7302
7303 if (negated)
7304 not_current_architecture |= ext->arch;
7305 else
7306 current_architecture |= ext->arch;
7307 return 1;
7308 }
7309
7310 /* md_parse_option
7311 Invocation line includes a switch not recognized by the base assembler.
7312 */
7313
7314 #ifdef OBJ_ELF
7315 const char *md_shortopts = "lSA:m:kQ:V";
7316 #else
7317 const char *md_shortopts = "lSA:m:k";
7318 #endif
7319
7320 struct option md_longopts[] = {
7321 #define OPTION_PIC (OPTION_MD_BASE)
7322 {"pic", no_argument, NULL, OPTION_PIC},
7323 #define OPTION_REGISTER_PREFIX_OPTIONAL (OPTION_MD_BASE + 1)
7324 {"register-prefix-optional", no_argument, NULL,
7325 OPTION_REGISTER_PREFIX_OPTIONAL},
7326 #define OPTION_BITWISE_OR (OPTION_MD_BASE + 2)
7327 {"bitwise-or", no_argument, NULL, OPTION_BITWISE_OR},
7328 #define OPTION_BASE_SIZE_DEFAULT_16 (OPTION_MD_BASE + 3)
7329 {"base-size-default-16", no_argument, NULL, OPTION_BASE_SIZE_DEFAULT_16},
7330 #define OPTION_BASE_SIZE_DEFAULT_32 (OPTION_MD_BASE + 4)
7331 {"base-size-default-32", no_argument, NULL, OPTION_BASE_SIZE_DEFAULT_32},
7332 #define OPTION_DISP_SIZE_DEFAULT_16 (OPTION_MD_BASE + 5)
7333 {"disp-size-default-16", no_argument, NULL, OPTION_DISP_SIZE_DEFAULT_16},
7334 #define OPTION_DISP_SIZE_DEFAULT_32 (OPTION_MD_BASE + 6)
7335 {"disp-size-default-32", no_argument, NULL, OPTION_DISP_SIZE_DEFAULT_32},
7336 #define OPTION_PCREL (OPTION_MD_BASE + 7)
7337 {"pcrel", no_argument, NULL, OPTION_PCREL},
7338 {NULL, no_argument, NULL, 0}
7339 };
7340 size_t md_longopts_size = sizeof (md_longopts);
7341
7342 int
7343 md_parse_option (int c, char *arg)
7344 {
7345 switch (c)
7346 {
7347 case 'l': /* -l means keep external to 2 bit offset
7348 rather than 16 bit one. */
7349 flag_short_refs = 1;
7350 break;
7351
7352 case 'S': /* -S means that jbsr's always turn into
7353 jsr's. */
7354 flag_long_jumps = 1;
7355 break;
7356
7357 case OPTION_PCREL: /* --pcrel means never turn PC-relative
7358 branches into absolute jumps. */
7359 flag_keep_pcrel = 1;
7360 break;
7361
7362 case OPTION_PIC:
7363 case 'k':
7364 flag_want_pic = 1;
7365 break; /* -pic, Position Independent Code. */
7366
7367 case OPTION_REGISTER_PREFIX_OPTIONAL:
7368 flag_reg_prefix_optional = 1;
7369 reg_prefix_optional_seen = 1;
7370 break;
7371
7372 /* -V: SVR4 argument to print version ID. */
7373 case 'V':
7374 print_version_id ();
7375 break;
7376
7377 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
7378 should be emitted or not. FIXME: Not implemented. */
7379 case 'Q':
7380 break;
7381
7382 case OPTION_BITWISE_OR:
7383 {
7384 char *n, *t;
7385 const char *s;
7386
7387 n = (char *) xmalloc (strlen (m68k_comment_chars) + 1);
7388 t = n;
7389 for (s = m68k_comment_chars; *s != '\0'; s++)
7390 if (*s != '|')
7391 *t++ = *s;
7392 *t = '\0';
7393 m68k_comment_chars = n;
7394 }
7395 break;
7396
7397 case OPTION_BASE_SIZE_DEFAULT_16:
7398 m68k_index_width_default = SIZE_WORD;
7399 break;
7400
7401 case OPTION_BASE_SIZE_DEFAULT_32:
7402 m68k_index_width_default = SIZE_LONG;
7403 break;
7404
7405 case OPTION_DISP_SIZE_DEFAULT_16:
7406 m68k_rel32 = 0;
7407 m68k_rel32_from_cmdline = 1;
7408 break;
7409
7410 case OPTION_DISP_SIZE_DEFAULT_32:
7411 m68k_rel32 = 1;
7412 m68k_rel32_from_cmdline = 1;
7413 break;
7414
7415 case 'A':
7416 #if WARN_DEPRECATED
7417 as_tsktsk (_ ("option `-A%s' is deprecated: use `-%s'",
7418 arg, arg));
7419 #endif
7420 /* Intentional fall-through. */
7421 case 'm':
7422 if (!strncmp (arg, "arch=", 5))
7423 m68k_set_arch (arg + 5, 1, 0);
7424 else if (!strncmp (arg, "cpu=", 4))
7425 m68k_set_cpu (arg + 4, 1, 0);
7426 else if (m68k_set_extension (arg, 0, 1))
7427 ;
7428 else if (m68k_set_arch (arg, 0, 1))
7429 ;
7430 else if (m68k_set_cpu (arg, 0, 1))
7431 ;
7432 else
7433 return 0;
7434 break;
7435
7436 default:
7437 return 0;
7438 }
7439
7440 return 1;
7441 }
7442
7443 /* Setup tables from the selected arch and/or cpu */
7444
7445 static void
7446 m68k_init_arch (void)
7447 {
7448 if (not_current_architecture & current_architecture)
7449 {
7450 as_bad (_("architecture features both enabled and disabled"));
7451 not_current_architecture &= ~current_architecture;
7452 }
7453 if (selected_arch)
7454 {
7455 current_architecture |= selected_arch->arch;
7456 control_regs = selected_arch->control_regs;
7457 }
7458 else
7459 current_architecture |= selected_cpu->arch;
7460
7461 current_architecture &= ~not_current_architecture;
7462
7463 if ((current_architecture & (cfloat | m68881)) == (cfloat | m68881))
7464 {
7465 /* Determine which float is really meant. */
7466 if (current_architecture & (m68k_mask & ~m68881))
7467 current_architecture ^= cfloat;
7468 else
7469 current_architecture ^= m68881;
7470 }
7471
7472 if (selected_cpu)
7473 {
7474 control_regs = selected_cpu->control_regs;
7475 if (current_architecture & ~selected_cpu->arch)
7476 {
7477 as_bad (_("selected processor does not have all features of selected architecture"));
7478 current_architecture
7479 = selected_cpu->arch & ~not_current_architecture;
7480 }
7481 }
7482
7483 if ((current_architecture & m68k_mask)
7484 && (current_architecture & ~m68k_mask))
7485 {
7486 as_bad (_ ("m68k and cf features both selected"));
7487 if (current_architecture & m68k_mask)
7488 current_architecture &= m68k_mask;
7489 else
7490 current_architecture &= ~m68k_mask;
7491 }
7492
7493 /* Permit m68881 specification with all cpus; those that can't work
7494 with a coprocessor could be doing emulation. */
7495 if (current_architecture & m68851)
7496 {
7497 if (current_architecture & m68040)
7498 as_warn (_("68040 and 68851 specified; mmu instructions may assemble incorrectly"));
7499 }
7500 /* What other incompatibilities could we check for? */
7501
7502 if (cpu_of_arch (current_architecture) < m68020
7503 || arch_coldfire_p (current_architecture))
7504 md_relax_table[TAB (PCINDEX, BYTE)].rlx_more = 0;
7505
7506 initialized = 1;
7507 }
7508
7509 void
7510 md_show_usage (FILE *stream)
7511 {
7512 const char *default_cpu = TARGET_CPU;
7513 int i;
7514 unsigned int default_arch;
7515
7516 /* Get the canonical name for the default target CPU. */
7517 if (*default_cpu == 'm')
7518 default_cpu++;
7519 for (i = 0; m68k_cpus[i].name; i++)
7520 {
7521 if (strcasecmp (default_cpu, m68k_cpus[i].name) == 0)
7522 {
7523 default_arch = m68k_cpus[i].arch;
7524 while (m68k_cpus[i].alias > 0)
7525 i--;
7526 while (m68k_cpus[i].alias < 0)
7527 i++;
7528 default_cpu = m68k_cpus[i].name;
7529 }
7530 }
7531
7532 fprintf (stream, _("\
7533 -march=<arch> set architecture\n\
7534 -mcpu=<cpu> set cpu [default %s]\n\
7535 "), default_cpu);
7536 for (i = 0; m68k_extensions[i].name; i++)
7537 fprintf (stream, _("\
7538 -m[no-]%-16s enable/disable%s architecture extension\n\
7539 "), m68k_extensions[i].name,
7540 m68k_extensions[i].alias > 0 ? " ColdFire"
7541 : m68k_extensions[i].alias < 0 ? " m68k" : "");
7542
7543 fprintf (stream, _("\
7544 -l use 1 word for refs to undefined symbols [default 2]\n\
7545 -pic, -k generate position independent code\n\
7546 -S turn jbsr into jsr\n\
7547 --pcrel never turn PC-relative branches into absolute jumps\n\
7548 --register-prefix-optional\n\
7549 recognize register names without prefix character\n\
7550 --bitwise-or do not treat `|' as a comment character\n\
7551 --base-size-default-16 base reg without size is 16 bits\n\
7552 --base-size-default-32 base reg without size is 32 bits (default)\n\
7553 --disp-size-default-16 displacement with unknown size is 16 bits\n\
7554 --disp-size-default-32 displacement with unknown size is 32 bits (default)\n\
7555 "));
7556
7557 fprintf (stream, _("Architecture variants are: "));
7558 for (i = 0; m68k_archs[i].name; i++)
7559 {
7560 if (i)
7561 fprintf (stream, " | ");
7562 fprintf (stream, m68k_archs[i].name);
7563 }
7564 fprintf (stream, "\n");
7565
7566 fprintf (stream, _("Processor variants are: "));
7567 for (i = 0; m68k_cpus[i].name; i++)
7568 {
7569 if (i)
7570 fprintf (stream, " | ");
7571 fprintf (stream, m68k_cpus[i].name);
7572 }
7573 fprintf (stream, _("\n"));
7574 }
7575 \f
7576 #ifdef TEST2
7577
7578 /* TEST2: Test md_assemble() */
7579 /* Warning, this routine probably doesn't work anymore. */
7580 int
7581 main (void)
7582 {
7583 struct m68k_it the_ins;
7584 char buf[120];
7585 char *cp;
7586 int n;
7587
7588 m68k_ip_begin ();
7589 for (;;)
7590 {
7591 if (!gets (buf) || !*buf)
7592 break;
7593 if (buf[0] == '|' || buf[1] == '.')
7594 continue;
7595 for (cp = buf; *cp; cp++)
7596 if (*cp == '\t')
7597 *cp = ' ';
7598 if (is_label (buf))
7599 continue;
7600 memset (&the_ins, '\0', sizeof (the_ins));
7601 m68k_ip (&the_ins, buf);
7602 if (the_ins.error)
7603 {
7604 printf (_("Error %s in %s\n"), the_ins.error, buf);
7605 }
7606 else
7607 {
7608 printf (_("Opcode(%d.%s): "), the_ins.numo, the_ins.args);
7609 for (n = 0; n < the_ins.numo; n++)
7610 printf (" 0x%x", the_ins.opcode[n] & 0xffff);
7611 printf (" ");
7612 print_the_insn (&the_ins.opcode[0], stdout);
7613 (void) putchar ('\n');
7614 }
7615 for (n = 0; n < strlen (the_ins.args) / 2; n++)
7616 {
7617 if (the_ins.operands[n].error)
7618 {
7619 printf ("op%d Error %s in %s\n", n, the_ins.operands[n].error, buf);
7620 continue;
7621 }
7622 printf ("mode %d, reg %d, ", the_ins.operands[n].mode,
7623 the_ins.operands[n].reg);
7624 if (the_ins.operands[n].b_const)
7625 printf ("Constant: '%.*s', ",
7626 1 + the_ins.operands[n].e_const - the_ins.operands[n].b_const,
7627 the_ins.operands[n].b_const);
7628 printf ("ireg %d, isiz %d, imul %d, ", the_ins.operands[n].ireg,
7629 the_ins.operands[n].isiz, the_ins.operands[n].imul);
7630 if (the_ins.operands[n].b_iadd)
7631 printf ("Iadd: '%.*s',",
7632 1 + the_ins.operands[n].e_iadd - the_ins.operands[n].b_iadd,
7633 the_ins.operands[n].b_iadd);
7634 putchar ('\n');
7635 }
7636 }
7637 m68k_ip_end ();
7638 return 0;
7639 }
7640
7641 int
7642 is_label (char *str)
7643 {
7644 while (*str == ' ')
7645 str++;
7646 while (*str && *str != ' ')
7647 str++;
7648 if (str[-1] == ':' || str[1] == '=')
7649 return 1;
7650 return 0;
7651 }
7652
7653 #endif
7654
7655 /* Possible states for relaxation:
7656
7657 0 0 branch offset byte (bra, etc)
7658 0 1 word
7659 0 2 long
7660
7661 1 0 indexed offsets byte a0@(32,d4:w:1) etc
7662 1 1 word
7663 1 2 long
7664
7665 2 0 two-offset index word-word a0@(32,d4)@(45) etc
7666 2 1 word-long
7667 2 2 long-word
7668 2 3 long-long
7669
7670 */
7671
7672 /* We have no need to default values of symbols. */
7673
7674 symbolS *
7675 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
7676 {
7677 return 0;
7678 }
7679
7680 /* Round up a section size to the appropriate boundary. */
7681 valueT
7682 md_section_align (segT segment ATTRIBUTE_UNUSED, valueT size)
7683 {
7684 #ifdef OBJ_AOUT
7685 /* For a.out, force the section size to be aligned. If we don't do
7686 this, BFD will align it for us, but it will not write out the
7687 final bytes of the section. This may be a bug in BFD, but it is
7688 easier to fix it here since that is how the other a.out targets
7689 work. */
7690 int align;
7691
7692 align = bfd_get_section_alignment (stdoutput, segment);
7693 size = ((size + (1 << align) - 1) & ((valueT) -1 << align));
7694 #endif
7695
7696 return size;
7697 }
7698
7699 /* Exactly what point is a PC-relative offset relative TO?
7700 On the 68k, it is relative to the address of the first extension
7701 word. The difference between the addresses of the offset and the
7702 first extension word is stored in fx_pcrel_adjust. */
7703 long
7704 md_pcrel_from (fixS *fixP)
7705 {
7706 int adjust;
7707
7708 /* Because fx_pcrel_adjust is a char, and may be unsigned, we explicitly
7709 sign extend the value here. */
7710 adjust = ((fixP->fx_pcrel_adjust & 0xff) ^ 0x80) - 0x80;
7711 if (adjust == 64)
7712 adjust = -1;
7713 return fixP->fx_where + fixP->fx_frag->fr_address - adjust;
7714 }
7715
7716 #ifdef OBJ_ELF
7717 void
7718 m68k_elf_final_processing (void)
7719 {
7720 unsigned flags = 0;
7721
7722 if (arch_coldfire_fpu (current_architecture))
7723 flags |= EF_M68K_CFV4E;
7724 /* Set file-specific flags if this is a cpu32 processor. */
7725 if (cpu_of_arch (current_architecture) & cpu32)
7726 flags |= EF_M68K_CPU32;
7727 else if (cpu_of_arch (current_architecture) & fido_a)
7728 flags |= EF_M68K_FIDO;
7729 else if ((cpu_of_arch (current_architecture) & m68000up)
7730 && !(cpu_of_arch (current_architecture) & m68020up))
7731 flags |= EF_M68K_M68000;
7732
7733 if (current_architecture & mcfisa_a)
7734 {
7735 static const unsigned isa_features[][2] =
7736 {
7737 {EF_M68K_CF_ISA_A_NODIV,mcfisa_a},
7738 {EF_M68K_CF_ISA_A, mcfisa_a|mcfhwdiv},
7739 {EF_M68K_CF_ISA_A_PLUS, mcfisa_a|mcfisa_aa|mcfhwdiv|mcfusp},
7740 {EF_M68K_CF_ISA_B_NOUSP,mcfisa_a|mcfisa_b|mcfhwdiv},
7741 {EF_M68K_CF_ISA_B, mcfisa_a|mcfisa_b|mcfhwdiv|mcfusp},
7742 {EF_M68K_CF_ISA_C, mcfisa_a|mcfisa_c|mcfhwdiv|mcfusp},
7743 {EF_M68K_CF_ISA_C_NODIV,mcfisa_a|mcfisa_c|mcfusp},
7744 {0,0},
7745 };
7746 static const unsigned mac_features[][2] =
7747 {
7748 {EF_M68K_CF_MAC, mcfmac},
7749 {EF_M68K_CF_EMAC, mcfemac},
7750 {0,0},
7751 };
7752 unsigned ix;
7753 unsigned pattern;
7754
7755 pattern = (current_architecture
7756 & (mcfisa_a|mcfisa_aa|mcfisa_b|mcfisa_c|mcfhwdiv|mcfusp));
7757 for (ix = 0; isa_features[ix][1]; ix++)
7758 {
7759 if (pattern == isa_features[ix][1])
7760 {
7761 flags |= isa_features[ix][0];
7762 break;
7763 }
7764 }
7765 if (!isa_features[ix][1])
7766 {
7767 cf_bad:
7768 as_warn (_("Not a defined coldfire architecture"));
7769 }
7770 else
7771 {
7772 if (current_architecture & cfloat)
7773 flags |= EF_M68K_CF_FLOAT | EF_M68K_CFV4E;
7774
7775 pattern = current_architecture & (mcfmac|mcfemac);
7776 if (pattern)
7777 {
7778 for (ix = 0; mac_features[ix][1]; ix++)
7779 {
7780 if (pattern == mac_features[ix][1])
7781 {
7782 flags |= mac_features[ix][0];
7783 break;
7784 }
7785 }
7786 if (!mac_features[ix][1])
7787 goto cf_bad;
7788 }
7789 }
7790 }
7791 elf_elfheader (stdoutput)->e_flags |= flags;
7792 }
7793 #endif
7794
7795 int
7796 tc_m68k_regname_to_dw2regnum (char *regname)
7797 {
7798 unsigned int regnum;
7799 static const char *const regnames[] =
7800 {
7801 "d0", "d1", "d2", "d3", "d4", "d5", "d6", "d7",
7802 "a0", "a1", "a2", "a3", "a4", "a5", "a6", "sp",
7803 "fp0", "fp1", "fp2", "fp3", "fp4", "fp5", "fp6", "fp7",
7804 "pc"
7805 };
7806
7807 for (regnum = 0; regnum < ARRAY_SIZE (regnames); regnum++)
7808 if (strcmp (regname, regnames[regnum]) == 0)
7809 return regnum;
7810
7811 return -1;
7812 }
7813
7814 void
7815 tc_m68k_frame_initial_instructions (void)
7816 {
7817 static int sp_regno = -1;
7818
7819 if (sp_regno < 0)
7820 sp_regno = tc_m68k_regname_to_dw2regnum ("sp");
7821
7822 cfi_add_CFA_def_cfa (sp_regno, -DWARF2_CIE_DATA_ALIGNMENT);
7823 cfi_add_CFA_offset (DWARF2_DEFAULT_RETURN_COLUMN, DWARF2_CIE_DATA_ALIGNMENT);
7824 }
GDB Binutils - Deliverables
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