1 /* tc-m68k.c -- Assemble for the m68k family
2 Copyright 1987, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
4 Free Software Foundation, Inc.
6 This file is part of GAS, the GNU Assembler.
8 GAS is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 2, or (at your option)
13 GAS is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with GAS; see the file COPYING. If not, write to the Free
20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
24 #include "safe-ctype.h"
27 #include "dwarf2dbg.h"
29 #include "opcode/m68k.h"
30 #include "m68k-parse.h"
36 /* This string holds the chars that always start a comment. If the
37 pre-processor is disabled, these aren't very useful. The macro
38 tc_comment_chars points to this. We use this, rather than the
39 usual comment_chars, so that the --bitwise-or option will work. */
40 #if defined (TE_SVR4) || defined (TE_DELTA)
41 const char *m68k_comment_chars = "|#";
43 const char *m68k_comment_chars = "|";
46 /* This array holds the chars that only start a comment at the beginning of
47 a line. If the line seems to have the form '# 123 filename'
48 .line and .file directives will appear in the pre-processed output */
49 /* Note that input_file.c hand checks for '#' at the beginning of the
50 first line of the input file. This is because the compiler outputs
51 #NO_APP at the beginning of its output. */
52 /* Also note that comments like this one will always work. */
53 const char line_comment_chars[] = "#*";
55 const char line_separator_chars[] = ";";
57 /* Chars that can be used to separate mant from exp in floating point nums */
58 CONST char EXP_CHARS[] = "eE";
60 /* Chars that mean this number is a floating point constant, as
61 in "0f12.456" or "0d1.2345e12". */
63 CONST char FLT_CHARS[] = "rRsSfFdDxXeEpP";
65 /* Also be aware that MAXIMUM_NUMBER_OF_CHARS_FOR_FLOAT may have to be
66 changed in read.c . Ideally it shouldn't have to know about it at all,
67 but nothing is ideal around here. */
69 const int md_reloc_size = 8; /* Size of relocation record */
71 /* Are we trying to generate PIC code? If so, absolute references
72 ought to be made into linkage table references or pc-relative
73 references. Not implemented. For ELF there are other means
74 to denote pic relocations. */
77 static int flag_short_refs; /* -l option */
78 static int flag_long_jumps; /* -S option */
79 static int flag_keep_pcrel; /* --pcrel option. */
81 #ifdef REGISTER_PREFIX_OPTIONAL
82 int flag_reg_prefix_optional = REGISTER_PREFIX_OPTIONAL;
84 int flag_reg_prefix_optional;
87 /* Whether --register-prefix-optional was used on the command line. */
88 static int reg_prefix_optional_seen;
90 /* The floating point coprocessor to use by default. */
91 static enum m68k_register m68k_float_copnum = COP1;
93 /* If this is non-zero, then references to number(%pc) will be taken
94 to refer to number, rather than to %pc + number. */
95 static int m68k_abspcadd;
97 /* If this is non-zero, then the quick forms of the move, add, and sub
98 instructions are used when possible. */
99 static int m68k_quick = 1;
101 /* If this is non-zero, then if the size is not specified for a base
102 or outer displacement, the assembler assumes that the size should
104 static int m68k_rel32 = 1;
106 /* This is non-zero if m68k_rel32 was set from the command line. */
107 static int m68k_rel32_from_cmdline;
109 /* The default width to use for an index register when using a base
111 static enum m68k_size m68k_index_width_default = SIZE_LONG;
113 /* We want to warn if any text labels are misaligned. In order to get
114 the right line number, we need to record the line number for each
119 struct label_line *next;
126 /* The list of labels. */
128 static struct label_line *labels;
130 /* The current label. */
132 static struct label_line *current_label;
134 /* Its an arbitrary name: This means I don't approve of it */
135 /* See flames below */
136 static struct obstack robyn;
140 const char *m_operands;
141 unsigned long m_opcode;
145 struct m68k_incant *m_next;
148 #define getone(x) ((((x)->m_opcode)>>16)&0xffff)
149 #define gettwo(x) (((x)->m_opcode)&0xffff)
151 static const enum m68k_register m68000_control_regs[] = { 0 };
152 static const enum m68k_register m68010_control_regs[] = {
156 static const enum m68k_register m68020_control_regs[] = {
157 SFC, DFC, USP, VBR, CACR, CAAR, MSP, ISP,
160 static const enum m68k_register m68040_control_regs[] = {
161 SFC, DFC, CACR, TC, ITT0, ITT1, DTT0, DTT1,
162 USP, VBR, MSP, ISP, MMUSR, URP, SRP,
165 static const enum m68k_register m68060_control_regs[] = {
166 SFC, DFC, CACR, TC, ITT0, ITT1, DTT0, DTT1, BUSCR,
167 USP, VBR, URP, SRP, PCR,
170 static const enum m68k_register mcf_control_regs[] = {
171 CACR, TC, ITT0, ITT1, DTT0, DTT1, VBR, ROMBAR,
172 RAMBAR0, RAMBAR1, MBAR,
175 #define cpu32_control_regs m68010_control_regs
177 static const enum m68k_register *control_regs;
179 /* internal form of a 68020 instruction */
183 const char *args; /* list of opcode info */
186 int numo; /* Number of shorts in opcode */
189 struct m68k_op operands[6];
191 int nexp; /* number of exprs in use */
192 struct m68k_exp exprs[4];
194 int nfrag; /* Number of frags we have to produce */
197 int fragoff; /* Where in the current opcode the frag ends */
204 int nrel; /* Num of reloc strucs in use */
211 /* In a pc relative address the difference between the address
212 of the offset and the address that the offset is relative
213 to. This depends on the addressing mode. Basically this
214 is the value to put in the offset field to address the
215 first byte of the offset, without regarding the special
216 significance of some values (in the branch instruction, for
220 /* Whether this expression needs special pic relocation, and if
222 enum pic_relocation pic_reloc;
225 reloc[5]; /* Five is enough??? */
228 #define cpu_of_arch(x) ((x) & (m68000up|mcf))
229 #define float_of_arch(x) ((x) & mfloat)
230 #define mmu_of_arch(x) ((x) & mmmu)
231 #define arch_coldfire_p(x) (((x) & mcf) != 0)
233 /* Macros for determining if cpu supports a specific addressing mode */
234 #define HAVE_LONG_BRANCH(x) ((x) & (m68020|m68030|m68040|m68060|cpu32|mcf5407))
236 static struct m68k_it the_ins; /* the instruction being assembled */
238 #define op(ex) ((ex)->exp.X_op)
239 #define adds(ex) ((ex)->exp.X_add_symbol)
240 #define subs(ex) ((ex)->exp.X_op_symbol)
241 #define offs(ex) ((ex)->exp.X_add_number)
243 /* Macros for adding things to the m68k_it struct */
245 #define addword(w) the_ins.opcode[the_ins.numo++]=(w)
247 /* Static functions. */
249 static void insop PARAMS ((int, const struct m68k_incant *));
250 static void add_fix PARAMS ((int, struct m68k_exp *, int, int));
251 static void add_frag PARAMS ((symbolS *, offsetT, int));
253 /* Like addword, but goes BEFORE general operands */
257 const struct m68k_incant *opcode;
260 for (z = the_ins.numo; z > opcode->m_codenum; --z)
261 the_ins.opcode[z]=the_ins.opcode[z-1];
262 for (z = 0;z < the_ins.nrel; z++)
263 the_ins.reloc[z].n+=2;
264 for (z = 0; z < the_ins.nfrag; z++)
265 the_ins.fragb[z].fragoff++;
266 the_ins.opcode[opcode->m_codenum]=w;
270 /* The numo+1 kludge is so we can hit the low order byte of the prev word.
273 add_fix (width, exp, pc_rel, pc_fix)
275 struct m68k_exp *exp;
279 the_ins.reloc[the_ins.nrel].n = ((width == 'B' || width == '3')
283 : (the_ins.numo*2)));
284 the_ins.reloc[the_ins.nrel].exp = exp->exp;
285 the_ins.reloc[the_ins.nrel].wid = width;
286 the_ins.reloc[the_ins.nrel].pcrel_fix = pc_fix;
288 the_ins.reloc[the_ins.nrel].pic_reloc = exp->pic_reloc;
290 the_ins.reloc[the_ins.nrel++].pcrel = pc_rel;
293 /* Cause an extra frag to be generated here, inserting up to 10 bytes
294 (that value is chosen in the frag_var call in md_assemble). TYPE
295 is the subtype of the frag to be generated; its primary type is
296 rs_machine_dependent.
298 The TYPE parameter is also used by md_convert_frag_1 and
299 md_estimate_size_before_relax. The appropriate type of fixup will
300 be emitted by md_convert_frag_1.
302 ADD becomes the FR_SYMBOL field of the frag, and OFF the FR_OFFSET. */
304 add_frag (add, off, type)
309 the_ins.fragb[the_ins.nfrag].fragoff=the_ins.numo;
310 the_ins.fragb[the_ins.nfrag].fadd=add;
311 the_ins.fragb[the_ins.nfrag].foff=off;
312 the_ins.fragb[the_ins.nfrag++].fragty=type;
316 (op (ex) != O_constant && op (ex) != O_big)
318 static char *crack_operand PARAMS ((char *str, struct m68k_op *opP));
319 static int get_num PARAMS ((struct m68k_exp *exp, int ok));
320 static void m68k_ip PARAMS ((char *));
321 static void insert_reg PARAMS ((const char *, int));
322 static void select_control_regs PARAMS ((void));
323 static void init_regtable PARAMS ((void));
324 static int reverse_16_bits PARAMS ((int in));
325 static int reverse_8_bits PARAMS ((int in));
326 static void install_gen_operand PARAMS ((int mode, int val));
327 static void install_operand PARAMS ((int mode, int val));
328 static void s_bss PARAMS ((int));
329 static void s_data1 PARAMS ((int));
330 static void s_data2 PARAMS ((int));
331 static void s_even PARAMS ((int));
332 static void s_proc PARAMS ((int));
333 static void mri_chip PARAMS ((void));
334 static void s_chip PARAMS ((int));
335 static void s_fopt PARAMS ((int));
336 static void s_opt PARAMS ((int));
337 static void s_reg PARAMS ((int));
338 static void s_restore PARAMS ((int));
339 static void s_save PARAMS ((int));
340 static void s_mri_if PARAMS ((int));
341 static void s_mri_else PARAMS ((int));
342 static void s_mri_endi PARAMS ((int));
343 static void s_mri_break PARAMS ((int));
344 static void s_mri_next PARAMS ((int));
345 static void s_mri_for PARAMS ((int));
346 static void s_mri_endf PARAMS ((int));
347 static void s_mri_repeat PARAMS ((int));
348 static void s_mri_until PARAMS ((int));
349 static void s_mri_while PARAMS ((int));
350 static void s_mri_endw PARAMS ((int));
351 static void md_convert_frag_1 PARAMS ((fragS *));
353 static int current_architecture;
362 static const struct m68k_cpu archs[] =
364 { m68000, "68000", 0 },
365 { m68010, "68010", 0 },
366 { m68020, "68020", 0 },
367 { m68030, "68030", 0 },
368 { m68040, "68040", 0 },
369 { m68060, "68060", 0 },
370 { cpu32, "cpu32", 0 },
371 { m68881, "68881", 0 },
372 { m68851, "68851", 0 },
373 { mcf5200, "5200", 0 },
374 { mcf5206e, "5206e", 0 },
375 { mcf5307, "5307", 0},
376 { mcf5407, "5407", 0},
377 /* Aliases (effectively, so far as gas is concerned) for the above
379 { m68020, "68k", 1 },
380 { m68000, "68008", 1 },
381 { m68000, "68302", 1 },
382 { m68000, "68306", 1 },
383 { m68000, "68307", 1 },
384 { m68000, "68322", 1 },
385 { m68000, "68356", 1 },
386 { m68000, "68ec000", 1 },
387 { m68000, "68hc000", 1 },
388 { m68000, "68hc001", 1 },
389 { m68020, "68ec020", 1 },
390 { m68030, "68ec030", 1 },
391 { m68040, "68ec040", 1 },
392 { m68060, "68ec060", 1 },
393 { cpu32, "68330", 1 },
394 { cpu32, "68331", 1 },
395 { cpu32, "68332", 1 },
396 { cpu32, "68333", 1 },
397 { cpu32, "68334", 1 },
398 { cpu32, "68336", 1 },
399 { cpu32, "68340", 1 },
400 { cpu32, "68341", 1 },
401 { cpu32, "68349", 1 },
402 { cpu32, "68360", 1 },
403 { m68881, "68882", 1 },
404 { mcf5200, "5202", 1 },
405 { mcf5200, "5204", 1 },
406 { mcf5200, "5206", 1 },
409 static const int n_archs = sizeof (archs) / sizeof (archs[0]);
411 /* This is the assembler relaxation table for m68k. m68k is a rich CISC
412 architecture and we have a lot of relaxation modes. */
414 /* Macros used in the relaxation code. */
415 #define TAB(x,y) (((x) << 2) + (y))
416 #define TABTYPE(x) ((x) >> 2)
418 /* Relaxation states. */
424 /* Here are all the relaxation modes we support. First we can relax ordinary
425 branches. On 68020 and higher and on CPU32 all branch instructions take
426 three forms, so on these CPUs all branches always remain as such. When we
427 have to expand to the LONG form on a 68000, though, we substitute an
428 absolute jump instead. This is a direct replacement for unconditional
429 branches and a branch over a jump for conditional branches. However, if the
430 user requires PIC and disables this with --pcrel, we can only relax between
431 BYTE and SHORT forms, punting if that isn't enough. This gives us four
432 different relaxation modes for branches: */
434 #define BRANCHBWL 0 /* branch byte, word, or long */
435 #define BRABSJUNC 1 /* absolute jump for LONG, unconditional */
436 #define BRABSJCOND 2 /* absolute jump for LONG, conditional */
437 #define BRANCHBW 3 /* branch byte or word */
439 /* We also relax coprocessor branches and DBcc's. All CPUs that support
440 coprocessor branches support them in word and long forms, so we have only
441 one relaxation mode for them. DBcc's are word only on all CPUs. We can
442 relax them to the LONG form with a branch-around sequence. This sequence
443 can use a long branch (if available) or an absolute jump (if acceptable).
444 This gives us two relaxation modes. If long branches are not available and
445 absolute jumps are not acceptable, we don't relax DBcc's. */
447 #define FBRANCH 4 /* coprocessor branch */
448 #define DBCCLBR 5 /* DBcc relaxable with a long branch */
449 #define DBCCABSJ 6 /* DBcc relaxable with an absolute jump */
451 /* That's all for instruction relaxation. However, we also relax PC-relative
452 operands. Specifically, we have three operand relaxation modes. On the
453 68000 PC-relative operands can only be 16-bit, but on 68020 and higher and
454 on CPU32 they may be 16-bit or 32-bit. For the latter we relax between the
455 two. Also PC+displacement+index operands in their simple form (with a non-
456 suppressed index without memory indirection) are supported on all CPUs, but
457 on the 68000 the displacement can be 8-bit only, whereas on 68020 and higher
458 and on CPU32 we relax it to SHORT and LONG forms as well using the extended
459 form of the PC+displacement+index operand. Finally, some absolute operands
460 can be relaxed down to 16-bit PC-relative. */
462 #define PCREL1632 7 /* 16-bit or 32-bit PC-relative */
463 #define PCINDEX 8 /* PC+displacement+index */
464 #define ABSTOPCREL 9 /* absolute relax down to 16-bit PC-relative */
466 /* Note that calls to frag_var need to specify the maximum expansion
467 needed; this is currently 10 bytes for DBCC. */
470 How far Forward this mode will reach:
471 How far Backward this mode will reach:
472 How many bytes this mode will add to the size of the frag
473 Which mode to go to if the offset won't fit in this one
475 relax_typeS md_relax_table[] =
477 { 127, -128, 0, TAB (BRANCHBWL, SHORT) },
478 { 32767, -32768, 2, TAB (BRANCHBWL, LONG) },
482 { 127, -128, 0, TAB (BRABSJUNC, SHORT) },
483 { 32767, -32768, 2, TAB (BRABSJUNC, LONG) },
487 { 127, -128, 0, TAB (BRABSJCOND, SHORT) },
488 { 32767, -32768, 2, TAB (BRABSJCOND, LONG) },
492 { 127, -128, 0, TAB (BRANCHBW, SHORT) },
497 { 1, 1, 0, 0 }, /* FBRANCH doesn't come BYTE */
498 { 32767, -32768, 2, TAB (FBRANCH, LONG) },
502 { 1, 1, 0, 0 }, /* DBCC doesn't come BYTE */
503 { 32767, -32768, 2, TAB (DBCCLBR, LONG) },
507 { 1, 1, 0, 0 }, /* DBCC doesn't come BYTE */
508 { 32767, -32768, 2, TAB (DBCCABSJ, LONG) },
512 { 1, 1, 0, 0 }, /* PCREL1632 doesn't come BYTE */
513 { 32767, -32768, 2, TAB (PCREL1632, LONG) },
517 { 125, -130, 0, TAB (PCINDEX, SHORT) },
518 { 32765, -32770, 2, TAB (PCINDEX, LONG) },
522 { 1, 1, 0, 0 }, /* ABSTOPCREL doesn't come BYTE */
523 { 32767, -32768, 2, TAB (ABSTOPCREL, LONG) },
528 /* These are the machine dependent pseudo-ops. These are included so
529 the assembler can work on the output from the SUN C compiler, which
533 /* This table describes all the machine specific pseudo-ops the assembler
534 has to support. The fields are:
535 pseudo-op name without dot
536 function to call to execute this pseudo-op
537 Integer arg to pass to the function
539 const pseudo_typeS md_pseudo_table[] =
541 {"data1", s_data1, 0},
542 {"data2", s_data2, 0},
545 {"skip", s_space, 0},
547 #if defined (TE_SUN3) || defined (OBJ_ELF)
548 {"align", s_align_bytes, 0},
551 {"swbeg", s_ignore, 0},
553 {"extend", float_cons, 'x'},
554 {"ldouble", float_cons, 'x'},
557 /* Dwarf2 support for Gcc. */
558 {"file", dwarf2_directive_file, 0},
559 {"loc", dwarf2_directive_loc, 0},
562 /* The following pseudo-ops are supported for MRI compatibility. */
564 {"comline", s_space, 1},
566 {"mask2", s_ignore, 0},
569 {"restore", s_restore, 0},
573 {"if.b", s_mri_if, 'b'},
574 {"if.w", s_mri_if, 'w'},
575 {"if.l", s_mri_if, 'l'},
576 {"else", s_mri_else, 0},
577 {"else.s", s_mri_else, 's'},
578 {"else.l", s_mri_else, 'l'},
579 {"endi", s_mri_endi, 0},
580 {"break", s_mri_break, 0},
581 {"break.s", s_mri_break, 's'},
582 {"break.l", s_mri_break, 'l'},
583 {"next", s_mri_next, 0},
584 {"next.s", s_mri_next, 's'},
585 {"next.l", s_mri_next, 'l'},
586 {"for", s_mri_for, 0},
587 {"for.b", s_mri_for, 'b'},
588 {"for.w", s_mri_for, 'w'},
589 {"for.l", s_mri_for, 'l'},
590 {"endf", s_mri_endf, 0},
591 {"repeat", s_mri_repeat, 0},
592 {"until", s_mri_until, 0},
593 {"until.b", s_mri_until, 'b'},
594 {"until.w", s_mri_until, 'w'},
595 {"until.l", s_mri_until, 'l'},
596 {"while", s_mri_while, 0},
597 {"while.b", s_mri_while, 'b'},
598 {"while.w", s_mri_while, 'w'},
599 {"while.l", s_mri_while, 'l'},
600 {"endw", s_mri_endw, 0},
605 /* The mote pseudo ops are put into the opcode table, since they
606 don't start with a . they look like opcodes to gas.
610 extern void obj_coff_section PARAMS ((int));
613 CONST pseudo_typeS mote_pseudo_table[] =
626 {"xdef", s_globl, 0},
628 {"align", s_align_bytes, 0},
630 {"align", s_align_ptwo, 0},
633 {"sect", obj_coff_section, 0},
634 {"section", obj_coff_section, 0},
639 #define issbyte(x) ((x)>=-128 && (x)<=127)
640 #define isubyte(x) ((x)>=0 && (x)<=255)
641 #define issword(x) ((x)>=-32768 && (x)<=32767)
642 #define isuword(x) ((x)>=0 && (x)<=65535)
644 #define isbyte(x) ((x)>= -255 && (x)<=255)
645 #define isword(x) ((x)>=-65536 && (x)<=65535)
646 #define islong(x) (1)
648 extern char *input_line_pointer;
650 static char notend_table[256];
651 static char alt_notend_table[256];
653 (! (notend_table[(unsigned char) *s] \
655 && alt_notend_table[(unsigned char) s[1]])))
657 #if defined (M68KCOFF) && !defined (BFD_ASSEMBLER)
659 #ifdef NO_PCREL_RELOCS
662 make_pcrel_absolute(fixP, add_number)
666 register unsigned char *opcode = fixP->fx_frag->fr_opcode;
668 /* rewrite the PC relative instructions to absolute address ones.
669 * these are rumoured to be faster, and the apollo linker refuses
670 * to deal with the PC relative relocations.
672 if (opcode[0] == 0x60 && opcode[1] == 0xff) /* BRA -> JMP */
677 else if (opcode[0] == 0x61 && opcode[1] == 0xff) /* BSR -> JSR */
683 as_fatal (_("Unknown PC relative instruction"));
688 #endif /* NO_PCREL_RELOCS */
691 tc_coff_fix2rtype (fixP)
694 if (fixP->fx_tcbit && fixP->fx_size == 4)
695 return R_RELLONG_NEG;
696 #ifdef NO_PCREL_RELOCS
697 know (fixP->fx_pcrel == 0);
698 return (fixP->fx_size == 1 ? R_RELBYTE
699 : fixP->fx_size == 2 ? R_DIR16
702 return (fixP->fx_pcrel ?
703 (fixP->fx_size == 1 ? R_PCRBYTE :
704 fixP->fx_size == 2 ? R_PCRWORD :
706 (fixP->fx_size == 1 ? R_RELBYTE :
707 fixP->fx_size == 2 ? R_RELWORD :
716 /* Return zero if the reference to SYMBOL from within the same segment may
719 /* On an ELF system, we can't relax an externally visible symbol,
720 because it may be overridden by a shared library. However, if
721 TARGET_OS is "elf", then we presume that we are assembling for an
722 embedded system, in which case we don't have to worry about shared
723 libraries, and we can relax any external sym. */
725 #define relaxable_symbol(symbol) \
726 (!((S_IS_EXTERNAL (symbol) && strcmp (TARGET_OS, "elf") != 0) \
727 || S_IS_WEAK (symbol)))
729 /* Compute the relocation code for a fixup of SIZE bytes, using pc
730 relative relocation if PCREL is non-zero. PIC says whether a special
731 pic relocation was requested. */
733 static bfd_reloc_code_real_type get_reloc_code
734 PARAMS ((int, int, enum pic_relocation));
736 static bfd_reloc_code_real_type
737 get_reloc_code (size, pcrel, pic)
740 enum pic_relocation pic;
748 return BFD_RELOC_8_GOT_PCREL;
750 return BFD_RELOC_16_GOT_PCREL;
752 return BFD_RELOC_32_GOT_PCREL;
760 return BFD_RELOC_8_GOTOFF;
762 return BFD_RELOC_16_GOTOFF;
764 return BFD_RELOC_32_GOTOFF;
772 return BFD_RELOC_8_PLT_PCREL;
774 return BFD_RELOC_16_PLT_PCREL;
776 return BFD_RELOC_32_PLT_PCREL;
784 return BFD_RELOC_8_PLTOFF;
786 return BFD_RELOC_16_PLTOFF;
788 return BFD_RELOC_32_PLTOFF;
798 return BFD_RELOC_8_PCREL;
800 return BFD_RELOC_16_PCREL;
802 return BFD_RELOC_32_PCREL;
822 as_bad (_("Can not do %d byte pc-relative relocation"), size);
824 as_bad (_("Can not do %d byte pc-relative pic relocation"), size);
829 as_bad (_("Can not do %d byte relocation"), size);
831 as_bad (_("Can not do %d byte pic relocation"), size);
834 return BFD_RELOC_NONE;
837 /* Here we decide which fixups can be adjusted to make them relative
838 to the beginning of the section instead of the symbol. Basically
839 we need to make sure that the dynamic relocations are done
840 correctly, so in some cases we force the original symbol to be
843 tc_m68k_fix_adjustable (fixP)
846 /* Prevent all adjustments to global symbols. */
847 if (! relaxable_symbol (fixP->fx_addsy))
850 /* adjust_reloc_syms doesn't know about the GOT */
851 switch (fixP->fx_r_type)
853 case BFD_RELOC_8_GOT_PCREL:
854 case BFD_RELOC_16_GOT_PCREL:
855 case BFD_RELOC_32_GOT_PCREL:
856 case BFD_RELOC_8_GOTOFF:
857 case BFD_RELOC_16_GOTOFF:
858 case BFD_RELOC_32_GOTOFF:
859 case BFD_RELOC_8_PLT_PCREL:
860 case BFD_RELOC_16_PLT_PCREL:
861 case BFD_RELOC_32_PLT_PCREL:
862 case BFD_RELOC_8_PLTOFF:
863 case BFD_RELOC_16_PLTOFF:
864 case BFD_RELOC_32_PLTOFF:
867 case BFD_RELOC_VTABLE_INHERIT:
868 case BFD_RELOC_VTABLE_ENTRY:
878 #define get_reloc_code(SIZE,PCREL,OTHER) NO_RELOC
880 #define relaxable_symbol(symbol) 1
887 tc_gen_reloc (section, fixp)
892 bfd_reloc_code_real_type code;
894 /* If the tcbit is set, then this was a fixup of a negative value
895 that was never resolved. We do not have a reloc to handle this,
896 so just return. We assume that other code will have detected this
897 situation and produced a helpful error message, so we just tell the
898 user that the reloc cannot be produced. */
902 as_bad_where (fixp->fx_file, fixp->fx_line,
903 _("Unable to produce reloc against symbol '%s'"),
904 S_GET_NAME (fixp->fx_addsy));
908 if (fixp->fx_r_type != BFD_RELOC_NONE)
910 code = fixp->fx_r_type;
912 /* Since DIFF_EXPR_OK is defined in tc-m68k.h, it is possible
913 that fixup_segment converted a non-PC relative reloc into a
914 PC relative reloc. In such a case, we need to convert the
921 code = BFD_RELOC_8_PCREL;
924 code = BFD_RELOC_16_PCREL;
927 code = BFD_RELOC_32_PCREL;
929 case BFD_RELOC_8_PCREL:
930 case BFD_RELOC_16_PCREL:
931 case BFD_RELOC_32_PCREL:
932 case BFD_RELOC_8_GOT_PCREL:
933 case BFD_RELOC_16_GOT_PCREL:
934 case BFD_RELOC_32_GOT_PCREL:
935 case BFD_RELOC_8_GOTOFF:
936 case BFD_RELOC_16_GOTOFF:
937 case BFD_RELOC_32_GOTOFF:
938 case BFD_RELOC_8_PLT_PCREL:
939 case BFD_RELOC_16_PLT_PCREL:
940 case BFD_RELOC_32_PLT_PCREL:
941 case BFD_RELOC_8_PLTOFF:
942 case BFD_RELOC_16_PLTOFF:
943 case BFD_RELOC_32_PLTOFF:
946 as_bad_where (fixp->fx_file, fixp->fx_line,
947 _("Cannot make %s relocation PC relative"),
948 bfd_get_reloc_code_name (code));
954 #define F(SZ,PCREL) (((SZ) << 1) + (PCREL))
955 switch (F (fixp->fx_size, fixp->fx_pcrel))
957 #define MAP(SZ,PCREL,TYPE) case F(SZ,PCREL): code = (TYPE); break
958 MAP (1, 0, BFD_RELOC_8);
959 MAP (2, 0, BFD_RELOC_16);
960 MAP (4, 0, BFD_RELOC_32);
961 MAP (1, 1, BFD_RELOC_8_PCREL);
962 MAP (2, 1, BFD_RELOC_16_PCREL);
963 MAP (4, 1, BFD_RELOC_32_PCREL);
971 reloc = (arelent *) xmalloc (sizeof (arelent));
972 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
973 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
974 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
977 reloc->addend = fixp->fx_addnumber;
982 reloc->addend = fixp->fx_addnumber;
984 reloc->addend = (section->vma
985 /* Explicit sign extension in case char is
987 + ((fixp->fx_pcrel_adjust & 0xff) ^ 0x80) - 0x80
989 + md_pcrel_from (fixp));
992 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
993 assert (reloc->howto != 0);
998 #endif /* BFD_ASSEMBLER */
1000 /* Handle of the OPCODE hash table. NULL means any use before
1001 m68k_ip_begin() will crash. */
1002 static struct hash_control *op_hash;
1004 /* Assemble an m68k instruction. */
1011 register struct m68k_op *opP;
1012 register const struct m68k_incant *opcode;
1013 register const char *s;
1014 register int tmpreg = 0, baseo = 0, outro = 0, nextword;
1015 char *pdot, *pdotmove;
1016 enum m68k_size siz1, siz2;
1020 LITTLENUM_TYPE words[6];
1021 LITTLENUM_TYPE *wordp;
1022 unsigned long ok_arch = 0;
1024 if (*instring == ' ')
1025 instring++; /* skip leading whitespace */
1027 /* Scan up to end of operation-code, which MUST end in end-of-string
1028 or exactly 1 space. */
1030 for (p = instring; *p != '\0'; p++)
1040 the_ins.error = _("No operator");
1044 /* p now points to the end of the opcode name, probably whitespace.
1045 Make sure the name is null terminated by clobbering the
1046 whitespace, look it up in the hash table, then fix it back.
1047 Remove a dot, first, since the opcode tables have none. */
1050 for (pdotmove = pdot; pdotmove < p; pdotmove++)
1051 *pdotmove = pdotmove[1];
1057 opcode = (const struct m68k_incant *) hash_find (op_hash, instring);
1062 for (pdotmove = p; pdotmove > pdot; pdotmove--)
1063 *pdotmove = pdotmove[-1];
1070 the_ins.error = _("Unknown operator");
1074 /* found a legitimate opcode, start matching operands */
1078 if (opcode->m_operands == 0)
1080 char *old = input_line_pointer;
1082 input_line_pointer = p;
1083 /* Ahh - it's a motorola style psuedo op */
1084 mote_pseudo_table[opcode->m_opnum].poc_handler
1085 (mote_pseudo_table[opcode->m_opnum].poc_val);
1086 input_line_pointer = old;
1092 if (flag_mri && opcode->m_opnum == 0)
1094 /* In MRI mode, random garbage is allowed after an instruction
1095 which accepts no operands. */
1096 the_ins.args = opcode->m_operands;
1097 the_ins.numargs = opcode->m_opnum;
1098 the_ins.numo = opcode->m_codenum;
1099 the_ins.opcode[0] = getone (opcode);
1100 the_ins.opcode[1] = gettwo (opcode);
1104 for (opP = &the_ins.operands[0]; *p; opP++)
1106 p = crack_operand (p, opP);
1110 the_ins.error = opP->error;
1115 opsfound = opP - &the_ins.operands[0];
1117 /* This ugly hack is to support the floating pt opcodes in their
1118 standard form. Essentially, we fake a first enty of type COP#1 */
1119 if (opcode->m_operands[0] == 'I')
1123 for (n = opsfound; n > 0; --n)
1124 the_ins.operands[n] = the_ins.operands[n - 1];
1126 memset ((char *) (&the_ins.operands[0]), '\0',
1127 sizeof (the_ins.operands[0]));
1128 the_ins.operands[0].mode = CONTROL;
1129 the_ins.operands[0].reg = m68k_float_copnum;
1133 /* We've got the operands. Find an opcode that'll accept them */
1136 /* If we didn't get the right number of ops, or we have no
1137 common model with this pattern then reject this pattern. */
1139 ok_arch |= opcode->m_arch;
1140 if (opsfound != opcode->m_opnum
1141 || ((opcode->m_arch & current_architecture) == 0))
1145 for (s = opcode->m_operands, opP = &the_ins.operands[0];
1149 /* Warning: this switch is huge! */
1150 /* I've tried to organize the cases into this order:
1151 non-alpha first, then alpha by letter. Lower-case
1152 goes directly before uppercase counterpart. */
1153 /* Code with multiple case ...: gets sorted by the lowest
1154 case ... it belongs to. I hope this makes sense. */
1260 if (opP->reg == PC || opP->reg == ZPC)
1277 if (opP->reg == PC || opP->reg == ZPC)
1296 if (opP->reg == PC || opP->reg == ZPC)
1306 if (opP->mode != IMMED)
1308 else if (s[1] == 'b'
1309 && ! isvar (&opP->disp)
1310 && (opP->disp.exp.X_op != O_constant
1311 || ! isbyte (opP->disp.exp.X_add_number)))
1313 else if (s[1] == 'B'
1314 && ! isvar (&opP->disp)
1315 && (opP->disp.exp.X_op != O_constant
1316 || ! issbyte (opP->disp.exp.X_add_number)))
1318 else if (s[1] == 'w'
1319 && ! isvar (&opP->disp)
1320 && (opP->disp.exp.X_op != O_constant
1321 || ! isword (opP->disp.exp.X_add_number)))
1323 else if (s[1] == 'W'
1324 && ! isvar (&opP->disp)
1325 && (opP->disp.exp.X_op != O_constant
1326 || ! issword (opP->disp.exp.X_add_number)))
1332 if (opP->mode != IMMED)
1337 if (opP->mode == AREG
1338 || opP->mode == CONTROL
1339 || opP->mode == FPREG
1340 || opP->mode == IMMED
1341 || opP->mode == REGLST
1342 || (opP->mode != ABSL
1344 || opP->reg == ZPC)))
1349 if (opP->mode == CONTROL
1350 || opP->mode == FPREG
1351 || opP->mode == REGLST
1352 || opP->mode == IMMED
1353 || (opP->mode != ABSL
1355 || opP->reg == ZPC)))
1383 if (opP->mode == CONTROL
1384 || opP->mode == FPREG
1385 || opP->mode == REGLST)
1390 if (opP->mode != AINC)
1395 if (opP->mode != ADEC)
1445 if (opP->reg == PC || opP->reg == ZPC)
1466 case '~': /* For now! (JF FOO is this right?) */
1488 if (opP->mode != CONTROL
1489 || (opP->reg != TT0 && opP->reg != TT1))
1494 if (opP->mode != AREG)
1499 if (opP->mode != AINDR)
1504 if (opP->mode != ABSL
1506 && strncmp (instring, "jbsr", 4) == 0))
1511 if (opP->mode != CONTROL || opP->reg != CCR)
1516 if (opP->mode != DISP
1518 || opP->reg > ADDR7)
1523 if (opP->mode != DREG)
1528 if (opP->reg != ACC)
1533 if (opP->mode != FPREG)
1538 if (opP->reg != MACSR)
1543 if (opP->reg != MASK)
1548 if (opP->mode != CONTROL
1555 if (opP->mode != CONTROL
1557 || opP->reg > last_movec_reg)
1561 const enum m68k_register *rp;
1562 for (rp = control_regs; *rp; rp++)
1563 if (*rp == opP->reg)
1571 if (opP->mode != IMMED)
1577 if (opP->mode == DREG
1578 || opP->mode == AREG
1579 || opP->mode == FPREG)
1588 opP->mask = 1 << (opP->reg - DATA0);
1591 opP->mask = 1 << (opP->reg - ADDR0 + 8);
1594 opP->mask = 1 << (opP->reg - FP0 + 16);
1602 else if (opP->mode == CONTROL)
1611 opP->mask = 1 << 24;
1614 opP->mask = 1 << 25;
1617 opP->mask = 1 << 26;
1626 else if (opP->mode != REGLST)
1628 else if (s[1] == '8' && (opP->mask & 0x0ffffff) != 0)
1630 else if (s[1] == '3' && (opP->mask & 0x7000000) != 0)
1635 if (opP->mode != IMMED)
1637 else if (opP->disp.exp.X_op != O_constant
1638 || ! issbyte (opP->disp.exp.X_add_number))
1640 else if (! m68k_quick
1641 && instring[3] != 'q'
1642 && instring[4] != 'q')
1647 if (opP->mode != DREG
1648 && opP->mode != IMMED
1649 && opP->mode != ABSL)
1654 if (opP->mode != IMMED)
1656 else if (opP->disp.exp.X_op != O_constant
1657 || opP->disp.exp.X_add_number < 1
1658 || opP->disp.exp.X_add_number > 8)
1660 else if (! m68k_quick
1661 && (strncmp (instring, "add", 3) == 0
1662 || strncmp (instring, "sub", 3) == 0)
1663 && instring[3] != 'q')
1668 if (opP->mode != DREG && opP->mode != AREG)
1673 if (opP->mode != AINDR
1674 && (opP->mode != BASE
1676 && opP->reg != ZADDR0)
1677 || opP->disp.exp.X_op != O_absent
1678 || ((opP->index.reg < DATA0
1679 || opP->index.reg > DATA7)
1680 && (opP->index.reg < ADDR0
1681 || opP->index.reg > ADDR7))
1682 || opP->index.size != SIZE_UNSPEC
1683 || opP->index.scale != 1))
1688 if (opP->mode != CONTROL
1689 || ! (opP->reg == FPI
1691 || opP->reg == FPC))
1696 if (opP->mode != CONTROL || opP->reg != SR)
1701 if (opP->mode != IMMED)
1703 else if (opP->disp.exp.X_op != O_constant
1704 || opP->disp.exp.X_add_number < 0
1705 || opP->disp.exp.X_add_number > 7)
1710 if (opP->mode != CONTROL || opP->reg != USP)
1714 /* JF these are out of order. We could put them
1715 in order if we were willing to put up with
1716 bunches of #ifdef m68851s in the code.
1718 Don't forget that you need these operands
1719 to use 68030 MMU instructions. */
1721 /* Memory addressing mode used by pflushr */
1723 if (opP->mode == CONTROL
1724 || opP->mode == FPREG
1725 || opP->mode == DREG
1726 || opP->mode == AREG
1727 || opP->mode == REGLST)
1729 /* We should accept immediate operands, but they
1730 supposedly have to be quad word, and we don't
1731 handle that. I would like to see what a Motorola
1732 assembler does before doing something here. */
1733 if (opP->mode == IMMED)
1738 if (opP->mode != CONTROL
1739 || (opP->reg != SFC && opP->reg != DFC))
1744 if (opP->mode != CONTROL || opP->reg != TC)
1749 if (opP->mode != CONTROL || opP->reg != AC)
1754 if (opP->mode != CONTROL
1757 && opP->reg != SCC))
1762 if (opP->mode != CONTROL
1768 if (opP->mode != CONTROL
1771 && opP->reg != CRP))
1776 if (opP->mode != CONTROL
1777 || (!(opP->reg >= BAD && opP->reg <= BAD + 7)
1778 && !(opP->reg >= BAC && opP->reg <= BAC + 7)))
1783 if (opP->mode != CONTROL || opP->reg != PSR)
1788 if (opP->mode != CONTROL || opP->reg != PCSR)
1793 if (opP->mode != CONTROL
1800 } /* not a cache specifier. */
1804 if (opP->mode != ABSL)
1809 if (opP->reg < DATA0L || opP->reg > ADDR7U)
1811 /* FIXME: kludge instead of fixing parser:
1812 upper/lower registers are *not* CONTROL
1813 registers, but ordinary ones. */
1814 if ((opP->reg >= DATA0L && opP->reg <= DATA7L)
1815 || (opP->reg >= DATA0U && opP->reg <= DATA7U))
1823 } /* switch on type of operand */
1827 } /* for each operand */
1828 } /* if immediately wrong */
1835 opcode = opcode->m_next;
1840 && !(ok_arch & current_architecture))
1845 _("invalid instruction for this architecture; needs "));
1846 cp = buf + strlen (buf);
1850 strcpy (cp, _("fpu (68040, 68060 or 68881/68882)"));
1853 strcpy (cp, _("mmu (68030 or 68851)"));
1856 strcpy (cp, _("68020 or higher"));
1859 strcpy (cp, _("68000 or higher"));
1862 strcpy (cp, _("68010 or higher"));
1866 int got_one = 0, idx;
1868 idx < (int) (sizeof (archs) / sizeof (archs[0]));
1871 if ((archs[idx].arch & ok_arch)
1872 && ! archs[idx].alias)
1876 strcpy (cp, " or ");
1880 strcpy (cp, archs[idx].name);
1886 cp = xmalloc (strlen (buf) + 1);
1891 the_ins.error = _("operands mismatch");
1893 } /* Fell off the end */
1898 /* now assemble it */
1900 the_ins.args = opcode->m_operands;
1901 the_ins.numargs = opcode->m_opnum;
1902 the_ins.numo = opcode->m_codenum;
1903 the_ins.opcode[0] = getone (opcode);
1904 the_ins.opcode[1] = gettwo (opcode);
1906 for (s = the_ins.args, opP = &the_ins.operands[0]; *s; s += 2, opP++)
1908 /* This switch is a doozy.
1909 Watch the first step; its a big one! */
1937 tmpreg = 0x3c; /* 7.4 */
1938 if (strchr ("bwl", s[1]))
1939 nextword = get_num (&opP->disp, 80);
1941 nextword = get_num (&opP->disp, 0);
1942 if (isvar (&opP->disp))
1943 add_fix (s[1], &opP->disp, 0, 0);
1947 if (!isbyte (nextword))
1948 opP->error = _("operand out of range");
1953 if (!isword (nextword))
1954 opP->error = _("operand out of range");
1959 if (!issword (nextword))
1960 opP->error = _("operand out of range");
1965 addword (nextword >> 16);
1992 /* We gotta put out some float */
1993 if (op (&opP->disp) != O_big)
1998 /* Can other cases happen here? */
1999 if (op (&opP->disp) != O_constant)
2002 val = (valueT) offs (&opP->disp);
2006 generic_bignum[gencnt] = (LITTLENUM_TYPE) val;
2007 val >>= LITTLENUM_NUMBER_OF_BITS;
2011 offs (&opP->disp) = gencnt;
2013 if (offs (&opP->disp) > 0)
2015 if (offs (&opP->disp) > baseo)
2017 as_warn (_("Bignum too big for %c format; truncated"),
2019 offs (&opP->disp) = baseo;
2021 baseo -= offs (&opP->disp);
2024 for (wordp = generic_bignum + offs (&opP->disp) - 1;
2025 offs (&opP->disp)--;
2030 gen_to_words (words, baseo, (long) outro);
2031 for (wordp = words; baseo--; wordp++)
2035 tmpreg = opP->reg - DATA; /* 0.dreg */
2038 tmpreg = 0x08 + opP->reg - ADDR; /* 1.areg */
2041 tmpreg = 0x10 + opP->reg - ADDR; /* 2.areg */
2044 tmpreg = 0x20 + opP->reg - ADDR; /* 4.areg */
2047 tmpreg = 0x18 + opP->reg - ADDR; /* 3.areg */
2051 nextword = get_num (&opP->disp, 80);
2054 && ! isvar (&opP->disp)
2057 opP->disp.exp.X_op = O_symbol;
2058 #ifndef BFD_ASSEMBLER
2059 opP->disp.exp.X_add_symbol = &abs_symbol;
2061 opP->disp.exp.X_add_symbol =
2062 section_symbol (absolute_section);
2066 /* Force into index mode. Hope this works */
2068 /* We do the first bit for 32-bit displacements, and the
2069 second bit for 16 bit ones. It is possible that we
2070 should make the default be WORD instead of LONG, but
2071 I think that'd break GCC, so we put up with a little
2072 inefficiency for the sake of working output. */
2074 if (!issword (nextword)
2075 || (isvar (&opP->disp)
2076 && ((opP->disp.size == SIZE_UNSPEC
2077 && flag_short_refs == 0
2078 && cpu_of_arch (current_architecture) >= m68020
2079 && ! arch_coldfire_p (current_architecture))
2080 || opP->disp.size == SIZE_LONG)))
2082 if (cpu_of_arch (current_architecture) < m68020
2083 || arch_coldfire_p (current_architecture))
2085 _("displacement too large for this architecture; needs 68020 or higher");
2087 tmpreg = 0x3B; /* 7.3 */
2089 tmpreg = 0x30 + opP->reg - ADDR; /* 6.areg */
2090 if (isvar (&opP->disp))
2094 if (opP->disp.size == SIZE_LONG
2096 /* If the displacement needs pic
2097 relocation it cannot be relaxed. */
2098 || opP->disp.pic_reloc != pic_none
2103 add_fix ('l', &opP->disp, 1, 2);
2107 add_frag (adds (&opP->disp),
2109 TAB (PCREL1632, SZ_UNDEF));
2116 add_fix ('l', &opP->disp, 0, 0);
2121 addword (nextword >> 16);
2126 tmpreg = 0x3A; /* 7.2 */
2128 tmpreg = 0x28 + opP->reg - ADDR; /* 5.areg */
2130 if (isvar (&opP->disp))
2134 add_fix ('w', &opP->disp, 1, 0);
2137 add_fix ('w', &opP->disp, 0, 0);
2147 baseo = get_num (&opP->disp, 80);
2148 if (opP->mode == POST || opP->mode == PRE)
2149 outro = get_num (&opP->odisp, 80);
2150 /* Figure out the `addressing mode'.
2151 Also turn on the BASE_DISABLE bit, if needed. */
2152 if (opP->reg == PC || opP->reg == ZPC)
2154 tmpreg = 0x3b; /* 7.3 */
2155 if (opP->reg == ZPC)
2158 else if (opP->reg == 0)
2161 tmpreg = 0x30; /* 6.garbage */
2163 else if (opP->reg >= ZADDR0 && opP->reg <= ZADDR7)
2166 tmpreg = 0x30 + opP->reg - ZADDR0;
2169 tmpreg = 0x30 + opP->reg - ADDR; /* 6.areg */
2171 siz1 = opP->disp.size;
2172 if (opP->mode == POST || opP->mode == PRE)
2173 siz2 = opP->odisp.size;
2177 /* Index register stuff */
2178 if (opP->index.reg != 0
2179 && opP->index.reg >= DATA
2180 && opP->index.reg <= ADDR7)
2182 nextword |= (opP->index.reg - DATA) << 12;
2184 if (opP->index.size == SIZE_LONG
2185 || (opP->index.size == SIZE_UNSPEC
2186 && m68k_index_width_default == SIZE_LONG))
2189 if ((opP->index.scale != 1
2190 && cpu_of_arch (current_architecture) < m68020)
2191 || (opP->index.scale == 8
2192 && arch_coldfire_p (current_architecture)))
2195 _("scale factor invalid on this architecture; needs cpu32 or 68020 or higher");
2198 if (arch_coldfire_p (current_architecture)
2199 && opP->index.size == SIZE_WORD)
2200 opP->error = _("invalid index size for coldfire");
2202 switch (opP->index.scale)
2219 GET US OUT OF HERE! */
2221 /* Must be INDEX, with an index register. Address
2222 register cannot be ZERO-PC, and either :b was
2223 forced, or we know it will fit. For a 68000 or
2224 68010, force this mode anyways, because the
2225 larger modes aren't supported. */
2226 if (opP->mode == BASE
2227 && ((opP->reg >= ADDR0
2228 && opP->reg <= ADDR7)
2231 if (siz1 == SIZE_BYTE
2232 || cpu_of_arch (current_architecture) < m68020
2233 || arch_coldfire_p (current_architecture)
2234 || (siz1 == SIZE_UNSPEC
2235 && ! isvar (&opP->disp)
2236 && issbyte (baseo)))
2238 nextword += baseo & 0xff;
2240 if (isvar (&opP->disp))
2242 /* Do a byte relocation. If it doesn't
2243 fit (possible on m68000) let the
2244 fixup processing complain later. */
2246 add_fix ('B', &opP->disp, 1, 1);
2248 add_fix ('B', &opP->disp, 0, 0);
2250 else if (siz1 != SIZE_BYTE)
2252 if (siz1 != SIZE_UNSPEC)
2253 as_warn (_("Forcing byte displacement"));
2254 if (! issbyte (baseo))
2255 opP->error = _("byte displacement out of range");
2260 else if (siz1 == SIZE_UNSPEC
2262 && isvar (&opP->disp)
2263 && subs (&opP->disp) == NULL
2265 /* If the displacement needs pic
2266 relocation it cannot be relaxed. */
2267 && opP->disp.pic_reloc == pic_none
2271 /* The code in md_convert_frag_1 needs to be
2272 able to adjust nextword. Call frag_grow
2273 to ensure that we have enough space in
2274 the frag obstack to make all the bytes
2277 nextword += baseo & 0xff;
2279 add_frag (adds (&opP->disp), offs (&opP->disp),
2280 TAB (PCINDEX, SZ_UNDEF));
2288 nextword |= 0x40; /* No index reg */
2289 if (opP->index.reg >= ZDATA0
2290 && opP->index.reg <= ZDATA7)
2291 nextword |= (opP->index.reg - ZDATA0) << 12;
2292 else if (opP->index.reg >= ZADDR0
2293 || opP->index.reg <= ZADDR7)
2294 nextword |= (opP->index.reg - ZADDR0 + 8) << 12;
2297 /* It isn't simple. */
2299 if (cpu_of_arch (current_architecture) < m68020
2300 || arch_coldfire_p (current_architecture))
2302 _("invalid operand mode for this architecture; needs 68020 or higher");
2305 /* If the guy specified a width, we assume that it is
2306 wide enough. Maybe it isn't. If so, we lose. */
2310 if (isvar (&opP->disp)
2312 : ! issword (baseo))
2317 else if (! isvar (&opP->disp) && baseo == 0)
2326 as_warn (_(":b not permitted; defaulting to :w"));
2336 /* Figure out innner displacement stuff */
2337 if (opP->mode == POST || opP->mode == PRE)
2339 if (cpu_of_arch (current_architecture) & cpu32)
2340 opP->error = _("invalid operand mode for this architecture; needs 68020 or higher");
2344 if (isvar (&opP->odisp)
2346 : ! issword (outro))
2351 else if (! isvar (&opP->odisp) && outro == 0)
2360 as_warn (_(":b not permitted; defaulting to :w"));
2369 if (opP->mode == POST
2370 && (nextword & 0x40) == 0)
2375 if (siz1 != SIZE_UNSPEC && isvar (&opP->disp))
2377 if (opP->reg == PC || opP->reg == ZPC)
2378 add_fix (siz1 == SIZE_LONG ? 'l' : 'w', &opP->disp, 1, 2);
2380 add_fix (siz1 == SIZE_LONG ? 'l' : 'w', &opP->disp, 0, 0);
2382 if (siz1 == SIZE_LONG)
2383 addword (baseo >> 16);
2384 if (siz1 != SIZE_UNSPEC)
2387 if (siz2 != SIZE_UNSPEC && isvar (&opP->odisp))
2388 add_fix (siz2 == SIZE_LONG ? 'l' : 'w', &opP->odisp, 0, 0);
2389 if (siz2 == SIZE_LONG)
2390 addword (outro >> 16);
2391 if (siz2 != SIZE_UNSPEC)
2397 nextword = get_num (&opP->disp, 80);
2398 switch (opP->disp.size)
2403 if (!isvar (&opP->disp) && issword (offs (&opP->disp)))
2405 tmpreg = 0x38; /* 7.0 */
2409 if (isvar (&opP->disp)
2410 && !subs (&opP->disp)
2411 && adds (&opP->disp)
2413 /* If the displacement needs pic relocation it
2414 cannot be relaxed. */
2415 && opP->disp.pic_reloc == pic_none
2418 && !strchr ("~%&$?", s[0]))
2420 tmpreg = 0x3A; /* 7.2 */
2421 add_frag (adds (&opP->disp),
2423 TAB (ABSTOPCREL, SZ_UNDEF));
2426 /* Fall through into long */
2428 if (isvar (&opP->disp))
2429 add_fix ('l', &opP->disp, 0, 0);
2431 tmpreg = 0x39;/* 7.1 mode */
2432 addword (nextword >> 16);
2437 as_bad (_("unsupported byte value; use a different suffix"));
2439 case SIZE_WORD: /* Word */
2440 if (isvar (&opP->disp))
2441 add_fix ('w', &opP->disp, 0, 0);
2443 tmpreg = 0x38;/* 7.0 mode */
2451 as_bad (_("unknown/incorrect operand"));
2454 install_gen_operand (s[1], tmpreg);
2460 { /* JF: I hate floating point! */
2475 tmpreg = get_num (&opP->disp, tmpreg);
2476 if (isvar (&opP->disp))
2477 add_fix (s[1], &opP->disp, 0, 0);
2480 case 'b': /* Danger: These do no check for
2481 certain types of overflow.
2483 if (!isbyte (tmpreg))
2484 opP->error = _("out of range");
2485 insop (tmpreg, opcode);
2486 if (isvar (&opP->disp))
2487 the_ins.reloc[the_ins.nrel - 1].n =
2488 (opcode->m_codenum) * 2 + 1;
2491 if (!issbyte (tmpreg))
2492 opP->error = _("out of range");
2493 the_ins.opcode[the_ins.numo - 1] |= tmpreg & 0xff;
2494 if (isvar (&opP->disp))
2495 the_ins.reloc[the_ins.nrel - 1].n = opcode->m_codenum * 2 - 1;
2498 if (!isword (tmpreg))
2499 opP->error = _("out of range");
2500 insop (tmpreg, opcode);
2501 if (isvar (&opP->disp))
2502 the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
2505 if (!issword (tmpreg))
2506 opP->error = _("out of range");
2507 insop (tmpreg, opcode);
2508 if (isvar (&opP->disp))
2509 the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
2512 /* Because of the way insop works, we put these two out
2514 insop (tmpreg, opcode);
2515 insop (tmpreg >> 16, opcode);
2516 if (isvar (&opP->disp))
2517 the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
2524 install_operand (s[1], tmpreg);
2535 install_operand (s[1], opP->reg - ADDR);
2539 tmpreg = get_num (&opP->disp, 80);
2543 add_fix ('B', &opP->disp, 1, -1);
2546 add_fix ('w', &opP->disp, 1, 0);
2551 if (! HAVE_LONG_BRANCH (current_architecture))
2552 as_warn (_("Can't use long branches on 68000/68010/5200"));
2553 the_ins.opcode[0] |= 0xff;
2554 add_fix ('l', &opP->disp, 1, 0);
2559 if (subs (&opP->disp)) /* We can't relax it */
2563 /* If the displacement needs pic relocation it cannot be
2565 if (opP->disp.pic_reloc != pic_none)
2568 /* This could either be a symbol, or an absolute
2569 address. If it's an absolute address, turn it into
2570 an absolute jump right here and keep it out of the
2572 if (adds (&opP->disp) == 0)
2574 if (the_ins.opcode[0] == 0x6000) /* jbra */
2575 the_ins.opcode[0] = 0x4EF9;
2576 else if (the_ins.opcode[0] == 0x6100) /* jbsr */
2577 the_ins.opcode[0] = 0x4EB9;
2580 the_ins.opcode[0] ^= 0x0100;
2581 the_ins.opcode[0] |= 0x0006;
2584 add_fix ('l', &opP->disp, 0, 0);
2590 /* Now we know it's going into the relaxer. Now figure
2591 out which mode. We try in this order of preference:
2592 long branch, absolute jump, byte/word branches only. */
2593 if (HAVE_LONG_BRANCH (current_architecture))
2594 add_frag (adds (&opP->disp), offs (&opP->disp),
2595 TAB (BRANCHBWL, SZ_UNDEF));
2596 else if (! flag_keep_pcrel)
2598 if ((the_ins.opcode[0] == 0x6000)
2599 || (the_ins.opcode[0] == 0x6100))
2600 add_frag (adds (&opP->disp), offs (&opP->disp),
2601 TAB (BRABSJUNC, SZ_UNDEF));
2603 add_frag (adds (&opP->disp), offs (&opP->disp),
2604 TAB (BRABSJCOND, SZ_UNDEF));
2607 add_frag (adds (&opP->disp), offs (&opP->disp),
2608 TAB (BRANCHBW, SZ_UNDEF));
2611 if (isvar (&opP->disp))
2613 /* Check for DBcc instructions. We can relax them,
2614 but only if we have long branches and/or absolute
2616 if (((the_ins.opcode[0] & 0xf0f8) == 0x50c8)
2617 && (HAVE_LONG_BRANCH (current_architecture)
2618 || (! flag_keep_pcrel)))
2620 if (HAVE_LONG_BRANCH (current_architecture))
2621 add_frag (adds (&opP->disp), offs (&opP->disp),
2622 TAB (DBCCLBR, SZ_UNDEF));
2624 add_frag (adds (&opP->disp), offs (&opP->disp),
2625 TAB (DBCCABSJ, SZ_UNDEF));
2628 add_fix ('w', &opP->disp, 1, 0);
2632 case 'C': /* Fixed size LONG coproc branches */
2633 add_fix ('l', &opP->disp, 1, 0);
2637 case 'c': /* Var size Coprocesssor branches */
2638 if (subs (&opP->disp) || (adds (&opP->disp) == 0))
2640 the_ins.opcode[the_ins.numo - 1] |= 0x40;
2641 add_fix ('l', &opP->disp, 1, 0);
2646 add_frag (adds (&opP->disp), offs (&opP->disp),
2647 TAB (FBRANCH, SZ_UNDEF));
2654 case 'C': /* Ignore it */
2657 case 'd': /* JF this is a kludge */
2658 install_operand ('s', opP->reg - ADDR);
2659 tmpreg = get_num (&opP->disp, 80);
2660 if (!issword (tmpreg))
2662 as_warn (_("Expression out of range, using 0"));
2669 install_operand (s[1], opP->reg - DATA);
2672 case 'E': /* Ignore it */
2676 install_operand (s[1], opP->reg - FP0);
2679 case 'G': /* Ignore it */
2684 tmpreg = opP->reg - COP0;
2685 install_operand (s[1], tmpreg);
2688 case 'J': /* JF foo */
2761 install_operand (s[1], tmpreg);
2765 tmpreg = get_num (&opP->disp, 55);
2766 install_operand (s[1], tmpreg & 0x7f);
2773 if (tmpreg & 0x7FF0000)
2774 as_bad (_("Floating point register in register list"));
2775 insop (reverse_16_bits (tmpreg), opcode);
2779 if (tmpreg & 0x700FFFF)
2780 as_bad (_("Wrong register in floating-point reglist"));
2781 install_operand (s[1], reverse_8_bits (tmpreg >> 16));
2789 if (tmpreg & 0x7FF0000)
2790 as_bad (_("Floating point register in register list"));
2791 insop (tmpreg, opcode);
2793 else if (s[1] == '8')
2795 if (tmpreg & 0x0FFFFFF)
2796 as_bad (_("incorrect register in reglist"));
2797 install_operand (s[1], tmpreg >> 24);
2801 if (tmpreg & 0x700FFFF)
2802 as_bad (_("wrong register in floating-point reglist"));
2804 install_operand (s[1], tmpreg >> 16);
2809 install_operand (s[1], get_num (&opP->disp, 60));
2813 tmpreg = ((opP->mode == DREG)
2814 ? 0x20 + (int) (opP->reg - DATA)
2815 : (get_num (&opP->disp, 40) & 0x1F));
2816 install_operand (s[1], tmpreg);
2820 tmpreg = get_num (&opP->disp, 10);
2823 install_operand (s[1], tmpreg);
2827 /* This depends on the fact that ADDR registers are eight
2828 more than their corresponding DATA regs, so the result
2829 will have the ADDR_REG bit set */
2830 install_operand (s[1], opP->reg - DATA);
2834 if (opP->mode == AINDR)
2835 install_operand (s[1], opP->reg - DATA);
2837 install_operand (s[1], opP->index.reg - DATA);
2841 if (opP->reg == FPI)
2843 else if (opP->reg == FPS)
2845 else if (opP->reg == FPC)
2849 install_operand (s[1], tmpreg);
2852 case 'S': /* Ignore it */
2856 install_operand (s[1], get_num (&opP->disp, 30));
2859 case 'U': /* Ignore it */
2878 as_fatal (_("failed sanity check"));
2879 } /* switch on cache token */
2880 install_operand (s[1], tmpreg);
2883 /* JF: These are out of order, I fear. */
2896 install_operand (s[1], tmpreg);
2922 install_operand (s[1], tmpreg);
2926 if (opP->reg == VAL)
2945 install_operand (s[1], tmpreg);
2959 tmpreg = (4 << 10) | ((opP->reg - BAD) << 2);
2970 tmpreg = (5 << 10) | ((opP->reg - BAC) << 2);
2976 install_operand (s[1], tmpreg);
2979 know (opP->reg == PSR);
2982 know (opP->reg == PCSR);
2997 install_operand (s[1], tmpreg);
3000 tmpreg = get_num (&opP->disp, 20);
3001 install_operand (s[1], tmpreg);
3003 case '_': /* used only for move16 absolute 32-bit address */
3004 if (isvar (&opP->disp))
3005 add_fix ('l', &opP->disp, 0, 0);
3006 tmpreg = get_num (&opP->disp, 80);
3007 addword (tmpreg >> 16);
3008 addword (tmpreg & 0xFFFF);
3011 install_operand (s[1], opP->reg - DATA0L);
3012 opP->reg -= (DATA0L);
3013 opP->reg &= 0x0F; /* remove upper/lower bit */
3020 /* By the time whe get here (FINALLY) the_ins contains the complete
3021 instruction, ready to be emitted. . . */
3025 reverse_16_bits (in)
3031 static int mask[16] =
3033 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
3034 0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000, 0x8000
3036 for (n = 0; n < 16; n++)
3039 out |= mask[15 - n];
3042 } /* reverse_16_bits() */
3051 static int mask[8] =
3053 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
3056 for (n = 0; n < 8; n++)
3062 } /* reverse_8_bits() */
3064 /* Cause an extra frag to be generated here, inserting up to 10 bytes
3065 (that value is chosen in the frag_var call in md_assemble). TYPE
3066 is the subtype of the frag to be generated; its primary type is
3067 rs_machine_dependent.
3069 The TYPE parameter is also used by md_convert_frag_1 and
3070 md_estimate_size_before_relax. The appropriate type of fixup will
3071 be emitted by md_convert_frag_1.
3073 ADD becomes the FR_SYMBOL field of the frag, and OFF the FR_OFFSET. */
3075 install_operand (mode, val)
3082 the_ins.opcode[0] |= val & 0xFF; /* JF FF is for M kludge */
3085 the_ins.opcode[0] |= val << 9;
3088 the_ins.opcode[1] |= val << 12;
3091 the_ins.opcode[1] |= val << 6;
3094 the_ins.opcode[1] |= val;
3097 the_ins.opcode[2] |= val << 12;
3100 the_ins.opcode[2] |= val << 6;
3103 /* DANGER! This is a hack to force cas2l and cas2w cmds to be
3104 three words long! */
3106 the_ins.opcode[2] |= val;
3109 the_ins.opcode[1] |= val << 7;
3112 the_ins.opcode[1] |= val << 10;
3116 the_ins.opcode[1] |= val << 5;
3121 the_ins.opcode[1] |= (val << 10) | (val << 7);
3124 the_ins.opcode[1] |= (val << 12) | val;
3127 the_ins.opcode[0] |= val = 0xff;
3130 the_ins.opcode[0] |= val << 9;
3133 the_ins.opcode[1] |= val;
3136 the_ins.opcode[1] |= val;
3137 the_ins.numo++; /* What a hack */
3140 the_ins.opcode[1] |= val << 4;
3148 the_ins.opcode[0] |= (val << 6);
3151 the_ins.opcode[1] = (val >> 16);
3152 the_ins.opcode[2] = val & 0xffff;
3155 the_ins.opcode[0] |= ((val & 0x8) << (6 - 3));
3156 the_ins.opcode[0] |= ((val & 0x7) << 9);
3157 the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
3160 the_ins.opcode[0] |= ((val & 0x8) << (6 - 3));
3161 the_ins.opcode[0] |= ((val & 0x7) << 9);
3164 the_ins.opcode[1] |= val << 12;
3165 the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
3168 the_ins.opcode[0] |= (val & 0xF);
3169 the_ins.opcode[1] |= ((val & 0x10) << (6 - 4));
3172 the_ins.opcode[1] |= (val & 0xF);
3173 the_ins.opcode[1] |= ((val & 0x10) << (6 - 4));
3176 the_ins.opcode[1] |= ((val != 1) << 10);
3180 as_fatal (_("failed sanity check."));
3182 } /* install_operand() */
3185 install_gen_operand (mode, val)
3192 the_ins.opcode[0] |= val;
3195 /* This is a kludge!!! */
3196 the_ins.opcode[0] |= (val & 0x07) << 9 | (val & 0x38) << 3;
3205 the_ins.opcode[0] |= val;
3207 /* more stuff goes here */
3209 as_fatal (_("failed sanity check."));
3211 } /* install_gen_operand() */
3214 * verify that we have some number of paren pairs, do m68k_ip_op(), and
3215 * then deal with the bitfield hack.
3219 crack_operand (str, opP)
3221 register struct m68k_op *opP;
3223 register int parens;
3225 register char *beg_str;
3233 for (parens = 0; *str && (parens > 0 || inquote || notend (str)); str++)
3239 else if (*str == ')')
3243 opP->error = _("Extra )");
3249 if (flag_mri && *str == '\'')
3250 inquote = ! inquote;
3252 if (!*str && parens)
3254 opP->error = _("Missing )");
3259 if (m68k_ip_op (beg_str, opP) != 0)
3266 c = *++str; /* JF bitfield hack */
3271 as_bad (_("Missing operand"));
3274 /* Detect MRI REG symbols and convert them to REGLSTs. */
3275 if (opP->mode == CONTROL && (int)opP->reg < 0)
3278 opP->mask = ~(int)opP->reg;
3285 /* This is the guts of the machine-dependent assembler. STR points to a
3286 machine dependent instruction. This function is supposed to emit
3287 the frags/bytes it assembles to.
3291 insert_reg (regname, regnum)
3292 const char *regname;
3298 #ifdef REGISTER_PREFIX
3299 if (!flag_reg_prefix_optional)
3301 buf[0] = REGISTER_PREFIX;
3302 strcpy (buf + 1, regname);
3307 symbol_table_insert (symbol_new (regname, reg_section, regnum,
3308 &zero_address_frag));
3310 for (i = 0; regname[i]; i++)
3311 buf[i] = TOUPPER (regname[i]);
3314 symbol_table_insert (symbol_new (buf, reg_section, regnum,
3315 &zero_address_frag));
3324 static const struct init_entry init_table[] =
3383 /* control registers */
3384 { "sfc", SFC }, /* Source Function Code */
3386 { "dfc", DFC }, /* Destination Function Code */
3388 { "cacr", CACR }, /* Cache Control Register */
3389 { "caar", CAAR }, /* Cache Address Register */
3391 { "usp", USP }, /* User Stack Pointer */
3392 { "vbr", VBR }, /* Vector Base Register */
3393 { "msp", MSP }, /* Master Stack Pointer */
3394 { "isp", ISP }, /* Interrupt Stack Pointer */
3396 { "itt0", ITT0 }, /* Instruction Transparent Translation Reg 0 */
3397 { "itt1", ITT1 }, /* Instruction Transparent Translation Reg 1 */
3398 { "dtt0", DTT0 }, /* Data Transparent Translation Register 0 */
3399 { "dtt1", DTT1 }, /* Data Transparent Translation Register 1 */
3401 /* 68ec040 versions of same */
3402 { "iacr0", ITT0 }, /* Instruction Access Control Register 0 */
3403 { "iacr1", ITT1 }, /* Instruction Access Control Register 0 */
3404 { "dacr0", DTT0 }, /* Data Access Control Register 0 */
3405 { "dacr1", DTT1 }, /* Data Access Control Register 0 */
3407 /* mcf5200 versions of same. The ColdFire programmer's reference
3408 manual indicated that the order is 2,3,0,1, but Ken Rose
3409 <rose@netcom.com> says that 0,1,2,3 is the correct order. */
3410 { "acr0", ITT0 }, /* Access Control Unit 0 */
3411 { "acr1", ITT1 }, /* Access Control Unit 1 */
3412 { "acr2", DTT0 }, /* Access Control Unit 2 */
3413 { "acr3", DTT1 }, /* Access Control Unit 3 */
3415 { "tc", TC }, /* MMU Translation Control Register */
3418 { "mmusr", MMUSR }, /* MMU Status Register */
3419 { "srp", SRP }, /* User Root Pointer */
3420 { "urp", URP }, /* Supervisor Root Pointer */
3425 { "rombar", ROMBAR }, /* ROM Base Address Register */
3426 { "rambar0", RAMBAR0 }, /* ROM Base Address Register */
3427 { "rambar1", RAMBAR1 }, /* ROM Base Address Register */
3428 { "mbar", MBAR }, /* Module Base Address Register */
3429 /* end of control registers */
3463 /* 68ec030 versions of same */
3466 /* 68ec030 access control unit, identical to 030 MMU status reg */
3469 /* Suppressed data and address registers. */
3487 /* Upper and lower data and address registers, used by macw and msacw. */
3531 for (i = 0; init_table[i].name; i++)
3532 insert_reg (init_table[i].name, init_table[i].number);
3535 static int no_68851, no_68881;
3538 /* a.out machine type. Default to 68020. */
3539 int m68k_aout_machtype = 2;
3551 int shorts_this_frag;
3554 /* In MRI mode, the instruction and operands are separated by a
3555 space. Anything following the operands is a comment. The label
3556 has already been removed. */
3564 for (s = str; *s != '\0'; s++)
3566 if ((*s == ' ' || *s == '\t') && ! inquote)
3584 inquote = ! inquote;
3589 memset ((char *) (&the_ins), '\0', sizeof (the_ins));
3594 for (n = 0; n < the_ins.numargs; n++)
3595 if (the_ins.operands[n].error)
3597 er = the_ins.operands[n].error;
3603 as_bad (_("%s -- statement `%s' ignored"), er, str);
3607 /* If there is a current label, record that it marks an instruction. */
3608 if (current_label != NULL)
3610 current_label->text = 1;
3611 current_label = NULL;
3615 /* Tie dwarf2 debug info to the address at the start of the insn. */
3616 dwarf2_emit_insn (0);
3619 if (the_ins.nfrag == 0)
3621 /* No frag hacking involved; just put it out */
3622 toP = frag_more (2 * the_ins.numo);
3623 fromP = &the_ins.opcode[0];
3624 for (m = the_ins.numo; m; --m)
3626 md_number_to_chars (toP, (long) (*fromP), 2);
3630 /* put out symbol-dependent info */
3631 for (m = 0; m < the_ins.nrel; m++)
3633 switch (the_ins.reloc[m].wid)
3652 as_fatal (_("Don't know how to figure width of %c in md_assemble()"),
3653 the_ins.reloc[m].wid);
3656 fixP = fix_new_exp (frag_now,
3657 ((toP - frag_now->fr_literal)
3658 - the_ins.numo * 2 + the_ins.reloc[m].n),
3660 &the_ins.reloc[m].exp,
3661 the_ins.reloc[m].pcrel,
3662 get_reloc_code (n, the_ins.reloc[m].pcrel,
3663 the_ins.reloc[m].pic_reloc));
3664 fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
3665 if (the_ins.reloc[m].wid == 'B')
3666 fixP->fx_signed = 1;
3671 /* There's some frag hacking */
3673 /* Calculate the max frag size. */
3676 wid = 2 * the_ins.fragb[0].fragoff;
3677 for (n = 1; n < the_ins.nfrag; n++)
3678 wid += 2 * (the_ins.numo - the_ins.fragb[n - 1].fragoff);
3679 /* frag_var part. */
3681 /* Make sure the whole insn fits in one chunk, in particular that
3682 the var part is attached, as we access one byte before the
3683 variable frag for byte branches. */
3687 for (n = 0, fromP = &the_ins.opcode[0]; n < the_ins.nfrag; n++)
3692 wid = 2 * the_ins.fragb[n].fragoff;
3694 wid = 2 * (the_ins.numo - the_ins.fragb[n - 1].fragoff);
3695 toP = frag_more (wid);
3697 shorts_this_frag = 0;
3698 for (m = wid / 2; m; --m)
3700 md_number_to_chars (toP, (long) (*fromP), 2);
3705 for (m = 0; m < the_ins.nrel; m++)
3707 if ((the_ins.reloc[m].n) >= 2 * shorts_this_frag)
3709 the_ins.reloc[m].n -= 2 * shorts_this_frag;
3712 wid = the_ins.reloc[m].wid;
3715 the_ins.reloc[m].wid = 0;
3716 wid = (wid == 'b') ? 1 : (wid == 'w') ? 2 : (wid == 'l') ? 4 : 4000;
3718 fixP = fix_new_exp (frag_now,
3719 ((toP - frag_now->fr_literal)
3720 - the_ins.numo * 2 + the_ins.reloc[m].n),
3722 &the_ins.reloc[m].exp,
3723 the_ins.reloc[m].pcrel,
3724 get_reloc_code (wid, the_ins.reloc[m].pcrel,
3725 the_ins.reloc[m].pic_reloc));
3726 fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
3728 (void) frag_var (rs_machine_dependent, 10, 0,
3729 (relax_substateT) (the_ins.fragb[n].fragty),
3730 the_ins.fragb[n].fadd, the_ins.fragb[n].foff, to_beg_P);
3732 n = (the_ins.numo - the_ins.fragb[n - 1].fragoff);
3733 shorts_this_frag = 0;
3736 toP = frag_more (n * sizeof (short));
3739 md_number_to_chars (toP, (long) (*fromP), 2);
3745 for (m = 0; m < the_ins.nrel; m++)
3749 wid = the_ins.reloc[m].wid;
3752 the_ins.reloc[m].wid = 0;
3753 wid = (wid == 'b') ? 1 : (wid == 'w') ? 2 : (wid == 'l') ? 4 : 4000;
3755 fixP = fix_new_exp (frag_now,
3756 ((the_ins.reloc[m].n + toP - frag_now->fr_literal)
3757 - shorts_this_frag * 2),
3759 &the_ins.reloc[m].exp,
3760 the_ins.reloc[m].pcrel,
3761 get_reloc_code (wid, the_ins.reloc[m].pcrel,
3762 the_ins.reloc[m].pic_reloc));
3763 fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
3771 * md_begin -- set up hash tables with 68000 instructions.
3772 * similar to what the vax assembler does. ---phr
3774 /* RMS claims the thing to do is take the m68k-opcode.h table, and make
3775 a copy of it at runtime, adding in the information we want but isn't
3776 there. I think it'd be better to have an awk script hack the table
3777 at compile time. Or even just xstr the table and use it as-is. But
3778 my lord ghod hath spoken, so we do it this way. Excuse the ugly var
3781 const struct m68k_opcode *ins;
3782 struct m68k_incant *hack, *slak;
3783 const char *retval = 0; /* empty string, or error msg text */
3788 flag_reg_prefix_optional = 1;
3790 if (! m68k_rel32_from_cmdline)
3794 op_hash = hash_new ();
3796 obstack_begin (&robyn, 4000);
3797 for (i = 0; i < m68k_numopcodes; i++)
3799 hack = slak = (struct m68k_incant *) obstack_alloc (&robyn, sizeof (struct m68k_incant));
3802 ins = &m68k_opcodes[i];
3803 /* We *could* ignore insns that don't match our arch here
3804 but just leaving them out of the hash. */
3805 slak->m_operands = ins->args;
3806 slak->m_opnum = strlen (slak->m_operands) / 2;
3807 slak->m_arch = ins->arch;
3808 slak->m_opcode = ins->opcode;
3809 /* This is kludgey */
3810 slak->m_codenum = ((ins->match) & 0xffffL) ? 2 : 1;
3811 if (i + 1 != m68k_numopcodes
3812 && !strcmp (ins->name, m68k_opcodes[i + 1].name))
3814 slak->m_next = (struct m68k_incant *) obstack_alloc (&robyn, sizeof (struct m68k_incant));
3819 slak = slak->m_next;
3823 retval = hash_insert (op_hash, ins->name, (char *) hack);
3825 as_fatal (_("Internal Error: Can't hash %s: %s"), ins->name, retval);
3828 for (i = 0; i < m68k_numaliases; i++)
3830 const char *name = m68k_opcode_aliases[i].primary;
3831 const char *alias = m68k_opcode_aliases[i].alias;
3832 PTR val = hash_find (op_hash, name);
3834 as_fatal (_("Internal Error: Can't find %s in hash table"), name);
3835 retval = hash_insert (op_hash, alias, val);
3837 as_fatal (_("Internal Error: Can't hash %s: %s"), alias, retval);
3840 /* In MRI mode, all unsized branches are variable sized. Normally,
3841 they are word sized. */
3844 static struct m68k_opcode_alias mri_aliases[] =
3865 i < (int) (sizeof mri_aliases / sizeof mri_aliases[0]);
3868 const char *name = mri_aliases[i].primary;
3869 const char *alias = mri_aliases[i].alias;
3870 PTR val = hash_find (op_hash, name);
3872 as_fatal (_("Internal Error: Can't find %s in hash table"), name);
3873 retval = hash_jam (op_hash, alias, val);
3875 as_fatal (_("Internal Error: Can't hash %s: %s"), alias, retval);
3879 for (i = 0; i < (int) sizeof (notend_table); i++)
3881 notend_table[i] = 0;
3882 alt_notend_table[i] = 0;
3884 notend_table[','] = 1;
3885 notend_table['{'] = 1;
3886 notend_table['}'] = 1;
3887 alt_notend_table['a'] = 1;
3888 alt_notend_table['A'] = 1;
3889 alt_notend_table['d'] = 1;
3890 alt_notend_table['D'] = 1;
3891 alt_notend_table['#'] = 1;
3892 alt_notend_table['&'] = 1;
3893 alt_notend_table['f'] = 1;
3894 alt_notend_table['F'] = 1;
3895 #ifdef REGISTER_PREFIX
3896 alt_notend_table[REGISTER_PREFIX] = 1;
3899 /* We need to put '(' in alt_notend_table to handle
3900 cas2 %d0:%d2,%d3:%d4,(%a0):(%a1)
3902 alt_notend_table['('] = 1;
3904 /* We need to put '@' in alt_notend_table to handle
3905 cas2 %d0:%d2,%d3:%d4,@(%d0):@(%d1)
3907 alt_notend_table['@'] = 1;
3909 /* We need to put digits in alt_notend_table to handle
3910 bfextu %d0{24:1},%d0
3912 alt_notend_table['0'] = 1;
3913 alt_notend_table['1'] = 1;
3914 alt_notend_table['2'] = 1;
3915 alt_notend_table['3'] = 1;
3916 alt_notend_table['4'] = 1;
3917 alt_notend_table['5'] = 1;
3918 alt_notend_table['6'] = 1;
3919 alt_notend_table['7'] = 1;
3920 alt_notend_table['8'] = 1;
3921 alt_notend_table['9'] = 1;
3923 #ifndef MIT_SYNTAX_ONLY
3924 /* Insert pseudo ops, these have to go into the opcode table since
3925 gas expects pseudo ops to start with a dot */
3928 while (mote_pseudo_table[n].poc_name)
3930 hack = (struct m68k_incant *)
3931 obstack_alloc (&robyn, sizeof (struct m68k_incant));
3932 hash_insert (op_hash,
3933 mote_pseudo_table[n].poc_name, (char *) hack);
3934 hack->m_operands = 0;
3944 record_alignment (text_section, 2);
3945 record_alignment (data_section, 2);
3946 record_alignment (bss_section, 2);
3951 select_control_regs ()
3953 /* Note which set of "movec" control registers is available. */
3954 switch (cpu_of_arch (current_architecture))
3957 control_regs = m68000_control_regs;
3960 control_regs = m68010_control_regs;
3964 control_regs = m68020_control_regs;
3967 control_regs = m68040_control_regs;
3970 control_regs = m68060_control_regs;
3973 control_regs = cpu32_control_regs;
3979 control_regs = mcf_control_regs;
3987 m68k_init_after_args ()
3989 if (cpu_of_arch (current_architecture) == 0)
3992 const char *default_cpu = TARGET_CPU;
3994 if (*default_cpu == 'm')
3996 for (i = 0; i < n_archs; i++)
3997 if (strcasecmp (default_cpu, archs[i].name) == 0)
4001 as_bad (_("unrecognized default cpu `%s' ???"), TARGET_CPU);
4002 current_architecture |= m68020;
4005 current_architecture |= archs[i].arch;
4007 /* Permit m68881 specification with all cpus; those that can't work
4008 with a coprocessor could be doing emulation. */
4009 if (current_architecture & m68851)
4011 if (current_architecture & m68040)
4013 as_warn (_("68040 and 68851 specified; mmu instructions may assemble incorrectly"));
4016 /* What other incompatibilities could we check for? */
4018 /* Toss in some default assumptions about coprocessors. */
4020 && (cpu_of_arch (current_architecture)
4021 /* Can CPU32 have a 68881 coprocessor?? */
4022 & (m68020 | m68030 | cpu32)))
4024 current_architecture |= m68881;
4027 && (cpu_of_arch (current_architecture) & m68020up) != 0
4028 && (cpu_of_arch (current_architecture) & m68040up) == 0)
4030 current_architecture |= m68851;
4032 if (no_68881 && (current_architecture & m68881))
4033 as_bad (_("options for 68881 and no-68881 both given"));
4034 if (no_68851 && (current_architecture & m68851))
4035 as_bad (_("options for 68851 and no-68851 both given"));
4038 /* Work out the magic number. This isn't very general. */
4039 if (current_architecture & m68000)
4040 m68k_aout_machtype = 0;
4041 else if (current_architecture & m68010)
4042 m68k_aout_machtype = 1;
4043 else if (current_architecture & m68020)
4044 m68k_aout_machtype = 2;
4046 m68k_aout_machtype = 2;
4049 /* Note which set of "movec" control registers is available. */
4050 select_control_regs ();
4052 if (cpu_of_arch (current_architecture) < m68020
4053 || arch_coldfire_p (current_architecture))
4054 md_relax_table[TAB (PCINDEX, BYTE)].rlx_more = 0;
4057 /* This is called when a label is defined. */
4060 m68k_frob_label (sym)
4063 struct label_line *n;
4065 n = (struct label_line *) xmalloc (sizeof *n);
4068 as_where (&n->file, &n->line);
4074 /* This is called when a value that is not an instruction is emitted. */
4077 m68k_flush_pending_output ()
4079 current_label = NULL;
4082 /* This is called at the end of the assembly, when the final value of
4083 the label is known. We warn if this is a text symbol aligned at an
4087 m68k_frob_symbol (sym)
4090 if (S_GET_SEGMENT (sym) == reg_section
4091 && (int) S_GET_VALUE (sym) < 0)
4093 S_SET_SEGMENT (sym, absolute_section);
4094 S_SET_VALUE (sym, ~(int)S_GET_VALUE (sym));
4096 else if ((S_GET_VALUE (sym) & 1) != 0)
4098 struct label_line *l;
4100 for (l = labels; l != NULL; l = l->next)
4102 if (l->label == sym)
4105 as_warn_where (l->file, l->line,
4106 _("text label `%s' aligned to odd boundary"),
4114 /* This is called if we go in or out of MRI mode because of the .mri
4118 m68k_mri_mode_change (on)
4123 if (! flag_reg_prefix_optional)
4125 flag_reg_prefix_optional = 1;
4126 #ifdef REGISTER_PREFIX
4131 if (! m68k_rel32_from_cmdline)
4136 if (! reg_prefix_optional_seen)
4138 #ifdef REGISTER_PREFIX_OPTIONAL
4139 flag_reg_prefix_optional = REGISTER_PREFIX_OPTIONAL;
4141 flag_reg_prefix_optional = 0;
4143 #ifdef REGISTER_PREFIX
4148 if (! m68k_rel32_from_cmdline)
4153 /* Equal to MAX_PRECISION in atof-ieee.c */
4154 #define MAX_LITTLENUMS 6
4156 /* Turn a string in input_line_pointer into a floating point constant
4157 of type TYPE, and store the appropriate bytes in *LITP. The number
4158 of LITTLENUMS emitted is stored in *SIZEP. An error message is
4159 returned, or NULL on OK. */
4162 md_atof (type, litP, sizeP)
4168 LITTLENUM_TYPE words[MAX_LITTLENUMS];
4169 LITTLENUM_TYPE *wordP;
4200 return _("Bad call to MD_ATOF()");
4202 t = atof_ieee (input_line_pointer, type, words);
4204 input_line_pointer = t;
4206 *sizeP = prec * sizeof (LITTLENUM_TYPE);
4207 for (wordP = words; prec--;)
4209 md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE));
4210 litP += sizeof (LITTLENUM_TYPE);
4216 md_number_to_chars (buf, val, n)
4221 number_to_chars_bigendian (buf, val, n);
4225 md_apply_fix3 (fixP, valP, seg)
4228 segT seg ATTRIBUTE_UNUSED;
4230 offsetT val = *valP;
4231 addressT upper_limit;
4232 offsetT lower_limit;
4234 /* This is unnecessary but it convinces the native rs6000 compiler
4235 to generate the code we want. */
4236 char *buf = fixP->fx_frag->fr_literal;
4237 buf += fixP->fx_where;
4238 /* end ibm compiler workaround */
4240 val = ((val & 0xffffffff) ^ 0x80000000) - 0x80000000;
4242 if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
4248 memset (buf, 0, fixP->fx_size);
4249 fixP->fx_addnumber = val; /* Remember value for emit_reloc */
4251 if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
4252 && !S_IS_DEFINED (fixP->fx_addsy)
4253 && !S_IS_WEAK (fixP->fx_addsy))
4254 S_SET_WEAK (fixP->fx_addsy);
4259 #ifdef BFD_ASSEMBLER
4260 if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
4261 || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
4265 switch (fixP->fx_size)
4267 /* The cast to offsetT below are necessary to make code
4268 correct for machines where ints are smaller than offsetT. */
4272 lower_limit = - (offsetT) 0x80;
4275 *buf++ = (val >> 8);
4277 upper_limit = 0x7fff;
4278 lower_limit = - (offsetT) 0x8000;
4281 *buf++ = (val >> 24);
4282 *buf++ = (val >> 16);
4283 *buf++ = (val >> 8);
4285 upper_limit = 0x7fffffff;
4286 lower_limit = - (offsetT) 0x7fffffff - 1; /* avoid constant overflow */
4289 BAD_CASE (fixP->fx_size);
4292 /* Fix up a negative reloc. */
4293 if (fixP->fx_addsy == NULL && fixP->fx_subsy != NULL)
4295 fixP->fx_addsy = fixP->fx_subsy;
4296 fixP->fx_subsy = NULL;
4300 /* For non-pc-relative values, it's conceivable we might get something
4301 like "0xff" for a byte field. So extend the upper part of the range
4302 to accept such numbers. We arbitrarily disallow "-0xff" or "0xff+0xff",
4303 so that we can do any range checking at all. */
4304 if (! fixP->fx_pcrel && ! fixP->fx_signed)
4305 upper_limit = upper_limit * 2 + 1;
4307 if ((addressT) val > upper_limit
4308 && (val > 0 || val < lower_limit))
4309 as_bad_where (fixP->fx_file, fixP->fx_line, _("value out of range"));
4311 /* A one byte PC-relative reloc means a short branch. We can't use
4312 a short branch with a value of 0 or -1, because those indicate
4313 different opcodes (branches with longer offsets). fixup_segment
4314 in write.c may have clobbered fx_pcrel, so we need to examine the
4317 #ifdef BFD_ASSEMBLER
4318 || fixP->fx_r_type == BFD_RELOC_8_PCREL
4321 && fixP->fx_size == 1
4322 && (fixP->fx_addsy == NULL
4323 || S_IS_DEFINED (fixP->fx_addsy))
4324 && (val == 0 || val == -1))
4325 as_bad_where (fixP->fx_file, fixP->fx_line, _("invalid byte branch offset"));
4328 /* *fragP has been relaxed to its final size, and now needs to have
4329 the bytes inside it modified to conform to the new size There is UGLY
4333 md_convert_frag_1 (fragP)
4334 register fragS *fragP;
4339 /* Address in object code of the displacement. */
4340 register int object_address = fragP->fr_fix + fragP->fr_address;
4342 /* Address in gas core of the place to store the displacement. */
4343 /* This convinces the native rs6000 compiler to generate the code we
4345 register char *buffer_address = fragP->fr_literal;
4346 buffer_address += fragP->fr_fix;
4347 /* end ibm compiler workaround */
4349 /* The displacement of the address, from current location. */
4350 disp = fragP->fr_symbol ? S_GET_VALUE (fragP->fr_symbol) : 0;
4351 disp = (disp + fragP->fr_offset) - object_address;
4353 switch (fragP->fr_subtype)
4355 case TAB (BRANCHBWL, BYTE):
4356 case TAB (BRABSJUNC, BYTE):
4357 case TAB (BRABSJCOND, BYTE):
4358 case TAB (BRANCHBW, BYTE):
4359 know (issbyte (disp));
4361 as_bad_where (fragP->fr_file, fragP->fr_line,
4362 _("short branch with zero offset: use :w"));
4363 fixP = fix_new (fragP, fragP->fr_fix - 1, 1, fragP->fr_symbol,
4364 fragP->fr_offset, 1, RELAX_RELOC_PC8);
4365 fixP->fx_pcrel_adjust = -1;
4367 case TAB (BRANCHBWL, SHORT):
4368 case TAB (BRABSJUNC, SHORT):
4369 case TAB (BRABSJCOND, SHORT):
4370 case TAB (BRANCHBW, SHORT):
4371 fragP->fr_opcode[1] = 0x00;
4372 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
4373 1, RELAX_RELOC_PC16);
4376 case TAB (BRANCHBWL, LONG):
4377 fragP->fr_opcode[1] = (char) 0xFF;
4378 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset,
4379 1, RELAX_RELOC_PC32);
4382 case TAB (BRABSJUNC, LONG):
4383 if (fragP->fr_opcode[0] == 0x61) /* jbsr */
4385 fragP->fr_opcode[0] = 0x4E;
4386 fragP->fr_opcode[1] = (char) 0xB9; /* JSR with ABSL LONG operand */
4387 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset,
4388 0, RELAX_RELOC_ABS32);
4391 else if (fragP->fr_opcode[0] == 0x60) /* jbra */
4393 fragP->fr_opcode[0] = 0x4E;
4394 fragP->fr_opcode[1] = (char) 0xF9; /* JMP with ABSL LONG operand */
4395 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset,
4396 0, RELAX_RELOC_ABS32);
4401 /* This cannot happen, because jbsr and jbra are the only two
4402 unconditional branches. */
4406 case TAB (BRABSJCOND, LONG):
4407 /* Only Bcc 68000 instructions can come here. */
4408 /* Change bcc into b!cc/jmp absl long. */
4410 fragP->fr_opcode[0] ^= 0x01; /* invert bcc */
4411 fragP->fr_opcode[1] = 0x6;/* branch offset = 6 */
4413 /* JF: these used to be fr_opcode[2,3], but they may be in a
4414 different frag, in which case refering to them is a no-no.
4415 Only fr_opcode[0,1] are guaranteed to work. */
4416 *buffer_address++ = 0x4e; /* put in jmp long (0x4ef9) */
4417 *buffer_address++ = (char) 0xf9;
4418 fragP->fr_fix += 2; /* account for jmp instruction */
4419 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
4420 fragP->fr_offset, 0, RELAX_RELOC_ABS32);
4423 case TAB (FBRANCH, SHORT):
4424 know ((fragP->fr_opcode[1] & 0x40) == 0);
4425 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
4426 1, RELAX_RELOC_PC16);
4429 case TAB (FBRANCH, LONG):
4430 fragP->fr_opcode[1] |= 0x40; /* Turn on LONG bit */
4431 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset,
4432 1, RELAX_RELOC_PC32);
4435 case TAB (DBCCLBR, SHORT):
4436 case TAB (DBCCABSJ, SHORT):
4437 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
4438 1, RELAX_RELOC_PC16);
4441 case TAB (DBCCLBR, LONG):
4442 /* only DBcc instructions can come here */
4443 /* Change dbcc into dbcc/bral. */
4445 /* JF: these used to be fr_opcode[2-7], but that's wrong */
4446 *buffer_address++ = 0x00; /* branch offset = 4 */
4447 *buffer_address++ = 0x04;
4448 *buffer_address++ = 0x60; /* put in bra pc+6 */
4449 *buffer_address++ = 0x06;
4450 *buffer_address++ = 0x60; /* Put in bral (0x60ff). */
4451 *buffer_address++ = (char) 0xff;
4453 fragP->fr_fix += 6; /* account for bra/jmp instructions */
4454 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset, 1,
4458 case TAB (DBCCABSJ, LONG):
4459 /* only DBcc instructions can come here */
4460 /* Change dbcc into dbcc/jmp. */
4462 /* JF: these used to be fr_opcode[2-7], but that's wrong */
4463 *buffer_address++ = 0x00; /* branch offset = 4 */
4464 *buffer_address++ = 0x04;
4465 *buffer_address++ = 0x60; /* put in bra pc+6 */
4466 *buffer_address++ = 0x06;
4467 *buffer_address++ = 0x4e; /* Put in jmp long (0x4ef9). */
4468 *buffer_address++ = (char) 0xf9;
4470 fragP->fr_fix += 6; /* account for bra/jmp instructions */
4471 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset, 0,
4475 case TAB (PCREL1632, SHORT):
4476 fragP->fr_opcode[1] &= ~0x3F;
4477 fragP->fr_opcode[1] |= 0x3A; /* 072 - mode 7.2 */
4478 fix_new (fragP, (int) (fragP->fr_fix), 2, fragP->fr_symbol,
4479 fragP->fr_offset, 1, RELAX_RELOC_PC16);
4482 case TAB (PCREL1632, LONG):
4483 /* Already set to mode 7.3; this indicates: PC indirect with
4484 suppressed index, 32-bit displacement. */
4485 *buffer_address++ = 0x01;
4486 *buffer_address++ = 0x70;
4488 fixP = fix_new (fragP, (int) (fragP->fr_fix), 4, fragP->fr_symbol,
4489 fragP->fr_offset, 1, RELAX_RELOC_PC32);
4490 fixP->fx_pcrel_adjust = 2;
4493 case TAB (PCINDEX, BYTE):
4494 assert (fragP->fr_fix >= 2);
4495 buffer_address[-2] &= ~1;
4496 fixP = fix_new (fragP, fragP->fr_fix - 1, 1, fragP->fr_symbol,
4497 fragP->fr_offset, 1, RELAX_RELOC_PC8);
4498 fixP->fx_pcrel_adjust = 1;
4500 case TAB (PCINDEX, SHORT):
4501 assert (fragP->fr_fix >= 2);
4502 buffer_address[-2] |= 0x1;
4503 buffer_address[-1] = 0x20;
4504 fixP = fix_new (fragP, (int) (fragP->fr_fix), 2, fragP->fr_symbol,
4505 fragP->fr_offset, 1, RELAX_RELOC_PC16);
4506 fixP->fx_pcrel_adjust = 2;
4509 case TAB (PCINDEX, LONG):
4510 assert (fragP->fr_fix >= 2);
4511 buffer_address[-2] |= 0x1;
4512 buffer_address[-1] = 0x30;
4513 fixP = fix_new (fragP, (int) (fragP->fr_fix), 4, fragP->fr_symbol,
4514 fragP->fr_offset, 1, RELAX_RELOC_PC32);
4515 fixP->fx_pcrel_adjust = 2;
4518 case TAB (ABSTOPCREL, SHORT):
4519 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
4520 1, RELAX_RELOC_PC16);
4523 case TAB (ABSTOPCREL, LONG):
4524 /* The thing to do here is force it to ABSOLUTE LONG, since
4525 ABSTOPCREL is really trying to shorten an ABSOLUTE address anyway */
4526 if ((fragP->fr_opcode[1] & 0x3F) != 0x3A)
4528 fragP->fr_opcode[1] &= ~0x3F;
4529 fragP->fr_opcode[1] |= 0x39; /* Mode 7.1 */
4530 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset,
4531 0, RELAX_RELOC_ABS32);
4537 #ifndef BFD_ASSEMBLER
4540 md_convert_frag (headers, sec, fragP)
4541 object_headers *headers ATTRIBUTE_UNUSED;
4542 segT sec ATTRIBUTE_UNUSED;
4545 md_convert_frag_1 (fragP);
4551 md_convert_frag (abfd, sec, fragP)
4552 bfd *abfd ATTRIBUTE_UNUSED;
4553 segT sec ATTRIBUTE_UNUSED;
4556 md_convert_frag_1 (fragP);
4560 /* Force truly undefined symbols to their maximum size, and generally set up
4561 the frag list to be relaxed
4564 md_estimate_size_before_relax (fragP, segment)
4565 register fragS *fragP;
4568 /* Handle SZ_UNDEF first, it can be changed to BYTE or SHORT. */
4569 switch (fragP->fr_subtype)
4571 case TAB (BRANCHBWL, SZ_UNDEF):
4572 case TAB (BRABSJUNC, SZ_UNDEF):
4573 case TAB (BRABSJCOND, SZ_UNDEF):
4575 if (S_GET_SEGMENT (fragP->fr_symbol) == segment
4576 && relaxable_symbol (fragP->fr_symbol))
4578 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), BYTE);
4580 else if (flag_short_refs)
4582 /* Symbol is undefined and we want short ref. */
4583 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
4587 /* Symbol is still undefined. Make it LONG. */
4588 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), LONG);
4593 case TAB (BRANCHBW, SZ_UNDEF):
4595 if (S_GET_SEGMENT (fragP->fr_symbol) == segment
4596 && relaxable_symbol (fragP->fr_symbol))
4598 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), BYTE);
4602 /* Symbol is undefined and we don't have long branches. */
4603 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
4608 case TAB (FBRANCH, SZ_UNDEF):
4609 case TAB (DBCCLBR, SZ_UNDEF):
4610 case TAB (DBCCABSJ, SZ_UNDEF):
4611 case TAB (PCREL1632, SZ_UNDEF):
4613 if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
4614 && relaxable_symbol (fragP->fr_symbol))
4617 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
4621 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), LONG);
4626 case TAB (PCINDEX, SZ_UNDEF):
4627 if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
4628 && relaxable_symbol (fragP->fr_symbol)))
4630 fragP->fr_subtype = TAB (PCINDEX, BYTE);
4634 fragP->fr_subtype = TAB (PCINDEX, LONG);
4638 case TAB (ABSTOPCREL, SZ_UNDEF):
4640 if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
4641 && relaxable_symbol (fragP->fr_symbol)))
4643 fragP->fr_subtype = TAB (ABSTOPCREL, SHORT);
4647 fragP->fr_subtype = TAB (ABSTOPCREL, LONG);
4656 /* Now that SZ_UNDEF are taken care of, check others. */
4657 switch (fragP->fr_subtype)
4659 case TAB (BRANCHBWL, BYTE):
4660 case TAB (BRABSJUNC, BYTE):
4661 case TAB (BRABSJCOND, BYTE):
4662 case TAB (BRANCHBW, BYTE):
4663 /* We can't do a short jump to the next instruction, so in that
4664 case we force word mode. If the symbol is at the start of a
4665 frag, and it is the next frag with any data in it (usually
4666 this is just the next frag, but assembler listings may
4667 introduce empty frags), we must use word mode. */
4668 if (fragP->fr_symbol)
4672 sym_frag = symbol_get_frag (fragP->fr_symbol);
4673 if (S_GET_VALUE (fragP->fr_symbol) == sym_frag->fr_address)
4677 for (l = fragP->fr_next; l != sym_frag; l = l->fr_next)
4681 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
4688 return md_relax_table[fragP->fr_subtype].rlx_length;
4691 #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
4692 /* the bit-field entries in the relocation_info struct plays hell
4693 with the byte-order problems of cross-assembly. So as a hack,
4694 I added this mach. dependent ri twiddler. Ugly, but it gets
4696 /* on m68k: first 4 bytes are normal unsigned long, next three bytes
4697 are symbolnum, most sig. byte first. Last byte is broken up with
4698 bit 7 as pcrel, bits 6 & 5 as length, bit 4 as pcrel, and the lower
4699 nibble as nuthin. (on Sun 3 at least) */
4700 /* Translate the internal relocation information into target-specific
4704 md_ri_to_chars (the_bytes, ri)
4706 struct reloc_info_generic *ri;
4709 md_number_to_chars (the_bytes, ri->r_address, 4);
4710 /* now the fun stuff */
4711 the_bytes[4] = (ri->r_symbolnum >> 16) & 0x0ff;
4712 the_bytes[5] = (ri->r_symbolnum >> 8) & 0x0ff;
4713 the_bytes[6] = ri->r_symbolnum & 0x0ff;
4714 the_bytes[7] = (((ri->r_pcrel << 7) & 0x80) | ((ri->r_length << 5) & 0x60) |
4715 ((ri->r_extern << 4) & 0x10));
4718 #endif /* comment */
4720 #ifndef BFD_ASSEMBLER
4722 tc_aout_fix_to_chars (where, fixP, segment_address_in_file)
4725 relax_addressT segment_address_in_file;
4728 * In: length of relocation (or of address) in chars: 1, 2 or 4.
4729 * Out: GNU LD relocation length code: 0, 1, or 2.
4732 static CONST unsigned char nbytes_r_length[] = {42, 0, 1, 42, 2};
4735 know (fixP->fx_addsy != NULL);
4737 md_number_to_chars (where,
4738 fixP->fx_frag->fr_address + fixP->fx_where - segment_address_in_file,
4741 r_symbolnum = (S_IS_DEFINED (fixP->fx_addsy)
4742 ? S_GET_TYPE (fixP->fx_addsy)
4743 : fixP->fx_addsy->sy_number);
4745 where[4] = (r_symbolnum >> 16) & 0x0ff;
4746 where[5] = (r_symbolnum >> 8) & 0x0ff;
4747 where[6] = r_symbolnum & 0x0ff;
4748 where[7] = (((fixP->fx_pcrel << 7) & 0x80) | ((nbytes_r_length[fixP->fx_size] << 5) & 0x60) |
4749 (((!S_IS_DEFINED (fixP->fx_addsy)) << 4) & 0x10));
4753 #endif /* OBJ_AOUT or OBJ_BOUT */
4755 #ifndef WORKING_DOT_WORD
4756 CONST int md_short_jump_size = 4;
4757 CONST int md_long_jump_size = 6;
4760 md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol)
4762 addressT from_addr, to_addr;
4763 fragS *frag ATTRIBUTE_UNUSED;
4764 symbolS *to_symbol ATTRIBUTE_UNUSED;
4768 offset = to_addr - (from_addr + 2);
4770 md_number_to_chars (ptr, (valueT) 0x6000, 2);
4771 md_number_to_chars (ptr + 2, (valueT) offset, 2);
4775 md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol)
4777 addressT from_addr, to_addr;
4783 if (!HAVE_LONG_BRANCH(current_architecture))
4785 offset = to_addr - S_GET_VALUE (to_symbol);
4786 md_number_to_chars (ptr, (valueT) 0x4EF9, 2);
4787 md_number_to_chars (ptr + 2, (valueT) offset, 4);
4788 fix_new (frag, (ptr + 2) - frag->fr_literal, 4, to_symbol, (offsetT) 0,
4793 offset = to_addr - (from_addr + 2);
4794 md_number_to_chars (ptr, (valueT) 0x60ff, 2);
4795 md_number_to_chars (ptr + 2, (valueT) offset, 4);
4801 /* Different values of OK tell what its OK to return. Things that
4802 aren't OK are an error (what a shock, no?)
4805 10: Absolute 1:8 only
4806 20: Absolute 0:7 only
4807 30: absolute 0:15 only
4808 40: Absolute 0:31 only
4809 50: absolute 0:127 only
4810 55: absolute -64:63 only
4811 60: absolute -128:127 only
4812 70: absolute 0:4095 only
4819 struct m68k_exp *exp;
4822 if (exp->exp.X_op == O_absent)
4824 /* Do the same thing the VAX asm does */
4825 op (exp) = O_constant;
4831 as_warn (_("expression out of range: defaulting to 1"));
4835 else if (exp->exp.X_op == O_constant)
4840 if (offs (exp) < 1 || offs (exp) > 8)
4842 as_warn (_("expression out of range: defaulting to 1"));
4847 if (offs (exp) < 0 || offs (exp) > 7)
4851 if (offs (exp) < 0 || offs (exp) > 15)
4855 if (offs (exp) < 0 || offs (exp) > 32)
4859 if (offs (exp) < 0 || offs (exp) > 127)
4863 if (offs (exp) < -64 || offs (exp) > 63)
4867 if (offs (exp) < -128 || offs (exp) > 127)
4871 if (offs (exp) < 0 || offs (exp) > 4095)
4874 as_warn (_("expression out of range: defaulting to 0"));
4882 else if (exp->exp.X_op == O_big)
4884 if (offs (exp) <= 0 /* flonum */
4885 && (ok == 80 /* no bignums */
4886 || (ok > 10 /* small-int ranges including 0 ok */
4887 /* If we have a flonum zero, a zero integer should
4888 do as well (e.g., in moveq). */
4889 && generic_floating_point_number.exponent == 0
4890 && generic_floating_point_number.low[0] == 0)))
4892 /* HACK! Turn it into a long */
4893 LITTLENUM_TYPE words[6];
4895 gen_to_words (words, 2, 8L); /* These numbers are magic! */
4896 op (exp) = O_constant;
4899 offs (exp) = words[1] | (words[0] << 16);
4903 op (exp) = O_constant;
4906 offs (exp) = (ok == 10) ? 1 : 0;
4907 as_warn (_("Can't deal with expression; defaulting to %ld"),
4913 if (ok >= 10 && ok <= 70)
4915 op (exp) = O_constant;
4918 offs (exp) = (ok == 10) ? 1 : 0;
4919 as_warn (_("Can't deal with expression; defaulting to %ld"),
4924 if (exp->size != SIZE_UNSPEC)
4932 if (!isbyte (offs (exp)))
4933 as_warn (_("expression doesn't fit in BYTE"));
4936 if (!isword (offs (exp)))
4937 as_warn (_("expression doesn't fit in WORD"));
4945 /* These are the back-ends for the various machine dependent pseudo-ops. */
4949 int ignore ATTRIBUTE_UNUSED;
4951 subseg_set (data_section, 1);
4952 demand_empty_rest_of_line ();
4957 int ignore ATTRIBUTE_UNUSED;
4959 subseg_set (data_section, 2);
4960 demand_empty_rest_of_line ();
4965 int ignore ATTRIBUTE_UNUSED;
4967 /* We don't support putting frags in the BSS segment, we fake it
4968 by marking in_bss, then looking at s_skip for clues. */
4970 subseg_set (bss_section, 0);
4971 demand_empty_rest_of_line ();
4976 int ignore ATTRIBUTE_UNUSED;
4979 register long temp_fill;
4981 temp = 1; /* JF should be 2? */
4982 temp_fill = get_absolute_expression ();
4983 if (!need_pass_2) /* Never make frag if expect extra pass. */
4984 frag_align (temp, (int) temp_fill, 0);
4985 demand_empty_rest_of_line ();
4986 record_alignment (now_seg, temp);
4991 int ignore ATTRIBUTE_UNUSED;
4993 demand_empty_rest_of_line ();
4996 /* Pseudo-ops handled for MRI compatibility. */
4998 /* This function returns non-zero if the argument is a conditional
4999 pseudo-op. This is called when checking whether a pending
5000 alignment is needed. */
5003 m68k_conditional_pseudoop (pop)
5006 return (pop->poc_handler == s_mri_if
5007 || pop->poc_handler == s_mri_else);
5010 /* Handle an MRI style chip specification. */
5019 s = input_line_pointer;
5020 /* We can't use get_symbol_end since the processor names are not proper
5022 while (is_part_of_name (c = *input_line_pointer++))
5024 *--input_line_pointer = 0;
5025 for (i = 0; i < n_archs; i++)
5026 if (strcasecmp (s, archs[i].name) == 0)
5030 as_bad (_("%s: unrecognized processor name"), s);
5031 *input_line_pointer = c;
5032 ignore_rest_of_line ();
5035 *input_line_pointer = c;
5037 if (*input_line_pointer == '/')
5038 current_architecture = 0;
5040 current_architecture &= m68881 | m68851;
5041 current_architecture |= archs[i].arch;
5043 while (*input_line_pointer == '/')
5045 ++input_line_pointer;
5046 s = input_line_pointer;
5047 /* We can't use get_symbol_end since the processor names are not
5049 while (is_part_of_name (c = *input_line_pointer++))
5051 *--input_line_pointer = 0;
5052 if (strcmp (s, "68881") == 0)
5053 current_architecture |= m68881;
5054 else if (strcmp (s, "68851") == 0)
5055 current_architecture |= m68851;
5056 *input_line_pointer = c;
5059 /* Update info about available control registers. */
5060 select_control_regs ();
5063 /* The MRI CHIP pseudo-op. */
5067 int ignore ATTRIBUTE_UNUSED;
5073 stop = mri_comment_field (&stopc);
5076 mri_comment_end (stop, stopc);
5077 demand_empty_rest_of_line ();
5080 /* The MRI FOPT pseudo-op. */
5084 int ignore ATTRIBUTE_UNUSED;
5088 if (strncasecmp (input_line_pointer, "ID=", 3) == 0)
5092 input_line_pointer += 3;
5093 temp = get_absolute_expression ();
5094 if (temp < 0 || temp > 7)
5095 as_bad (_("bad coprocessor id"));
5097 m68k_float_copnum = COP0 + temp;
5101 as_bad (_("unrecognized fopt option"));
5102 ignore_rest_of_line ();
5106 demand_empty_rest_of_line ();
5109 /* The structure used to handle the MRI OPT pseudo-op. */
5113 /* The name of the option. */
5116 /* If this is not NULL, just call this function. The first argument
5117 is the ARG field of this structure, the second argument is
5118 whether the option was negated. */
5119 void (*pfn) PARAMS ((int arg, int on));
5121 /* If this is not NULL, and the PFN field is NULL, set the variable
5122 this points to. Set it to the ARG field if the option was not
5123 negated, and the NOTARG field otherwise. */
5126 /* The value to pass to PFN or to assign to *PVAR. */
5129 /* The value to assign to *PVAR if the option is negated. If PFN is
5130 NULL, and PVAR is not NULL, and ARG and NOTARG are the same, then
5131 the option may not be negated. */
5135 /* The table used to handle the MRI OPT pseudo-op. */
5137 static void skip_to_comma PARAMS ((int, int));
5138 static void opt_nest PARAMS ((int, int));
5139 static void opt_chip PARAMS ((int, int));
5140 static void opt_list PARAMS ((int, int));
5141 static void opt_list_symbols PARAMS ((int, int));
5143 static const struct opt_action opt_table[] =
5145 { "abspcadd", 0, &m68k_abspcadd, 1, 0 },
5147 /* We do relaxing, so there is little use for these options. */
5148 { "b", 0, 0, 0, 0 },
5149 { "brs", 0, 0, 0, 0 },
5150 { "brb", 0, 0, 0, 0 },
5151 { "brl", 0, 0, 0, 0 },
5152 { "brw", 0, 0, 0, 0 },
5154 { "c", 0, 0, 0, 0 },
5155 { "cex", 0, 0, 0, 0 },
5156 { "case", 0, &symbols_case_sensitive, 1, 0 },
5157 { "cl", 0, 0, 0, 0 },
5158 { "cre", 0, 0, 0, 0 },
5159 { "d", 0, &flag_keep_locals, 1, 0 },
5160 { "e", 0, 0, 0, 0 },
5161 { "f", 0, &flag_short_refs, 1, 0 },
5162 { "frs", 0, &flag_short_refs, 1, 0 },
5163 { "frl", 0, &flag_short_refs, 0, 1 },
5164 { "g", 0, 0, 0, 0 },
5165 { "i", 0, 0, 0, 0 },
5166 { "m", 0, 0, 0, 0 },
5167 { "mex", 0, 0, 0, 0 },
5168 { "mc", 0, 0, 0, 0 },
5169 { "md", 0, 0, 0, 0 },
5170 { "nest", opt_nest, 0, 0, 0 },
5171 { "next", skip_to_comma, 0, 0, 0 },
5172 { "o", 0, 0, 0, 0 },
5173 { "old", 0, 0, 0, 0 },
5174 { "op", skip_to_comma, 0, 0, 0 },
5175 { "pco", 0, 0, 0, 0 },
5176 { "p", opt_chip, 0, 0, 0 },
5177 { "pcr", 0, 0, 0, 0 },
5178 { "pcs", 0, 0, 0, 0 },
5179 { "r", 0, 0, 0, 0 },
5180 { "quick", 0, &m68k_quick, 1, 0 },
5181 { "rel32", 0, &m68k_rel32, 1, 0 },
5182 { "s", opt_list, 0, 0, 0 },
5183 { "t", opt_list_symbols, 0, 0, 0 },
5184 { "w", 0, &flag_no_warnings, 0, 1 },
5188 #define OPTCOUNT ((int) (sizeof opt_table / sizeof opt_table[0]))
5190 /* The MRI OPT pseudo-op. */
5194 int ignore ATTRIBUTE_UNUSED;
5202 const struct opt_action *o;
5207 if (*input_line_pointer == '-')
5209 ++input_line_pointer;
5212 else if (strncasecmp (input_line_pointer, "NO", 2) == 0)
5214 input_line_pointer += 2;
5218 s = input_line_pointer;
5219 c = get_symbol_end ();
5221 for (i = 0, o = opt_table; i < OPTCOUNT; i++, o++)
5223 if (strcasecmp (s, o->name) == 0)
5227 /* Restore input_line_pointer now in case the option
5229 *input_line_pointer = c;
5230 (*o->pfn) (o->arg, t);
5232 else if (o->pvar != NULL)
5234 if (! t && o->arg == o->notarg)
5235 as_bad (_("option `%s' may not be negated"), s);
5236 *input_line_pointer = c;
5237 *o->pvar = t ? o->arg : o->notarg;
5240 *input_line_pointer = c;
5246 as_bad (_("option `%s' not recognized"), s);
5247 *input_line_pointer = c;
5250 while (*input_line_pointer++ == ',');
5252 /* Move back to terminating character. */
5253 --input_line_pointer;
5254 demand_empty_rest_of_line ();
5257 /* Skip ahead to a comma. This is used for OPT options which we do
5258 not suppor tand which take arguments. */
5261 skip_to_comma (arg, on)
5262 int arg ATTRIBUTE_UNUSED;
5263 int on ATTRIBUTE_UNUSED;
5265 while (*input_line_pointer != ','
5266 && ! is_end_of_line[(unsigned char) *input_line_pointer])
5267 ++input_line_pointer;
5270 /* Handle the OPT NEST=depth option. */
5274 int arg ATTRIBUTE_UNUSED;
5275 int on ATTRIBUTE_UNUSED;
5277 if (*input_line_pointer != '=')
5279 as_bad (_("bad format of OPT NEST=depth"));
5283 ++input_line_pointer;
5284 max_macro_nest = get_absolute_expression ();
5287 /* Handle the OPT P=chip option. */
5291 int arg ATTRIBUTE_UNUSED;
5292 int on ATTRIBUTE_UNUSED;
5294 if (*input_line_pointer != '=')
5296 /* This is just OPT P, which we do not support. */
5300 ++input_line_pointer;
5304 /* Handle the OPT S option. */
5308 int arg ATTRIBUTE_UNUSED;
5314 /* Handle the OPT T option. */
5317 opt_list_symbols (arg, on)
5318 int arg ATTRIBUTE_UNUSED;
5322 listing |= LISTING_SYMBOLS;
5324 listing &=~ LISTING_SYMBOLS;
5327 /* Handle the MRI REG pseudo-op. */
5331 int ignore ATTRIBUTE_UNUSED;
5340 if (line_label == NULL)
5342 as_bad (_("missing label"));
5343 ignore_rest_of_line ();
5348 stop = mri_comment_field (&stopc);
5352 s = input_line_pointer;
5353 while (ISALNUM (*input_line_pointer)
5354 #ifdef REGISTER_PREFIX
5355 || *input_line_pointer == REGISTER_PREFIX
5357 || *input_line_pointer == '/'
5358 || *input_line_pointer == '-')
5359 ++input_line_pointer;
5360 c = *input_line_pointer;
5361 *input_line_pointer = '\0';
5363 if (m68k_ip_op (s, &rop) != 0)
5365 if (rop.error == NULL)
5366 as_bad (_("bad register list"));
5368 as_bad (_("bad register list: %s"), rop.error);
5369 *input_line_pointer = c;
5370 ignore_rest_of_line ();
5374 *input_line_pointer = c;
5376 if (rop.mode == REGLST)
5378 else if (rop.mode == DREG)
5379 mask = 1 << (rop.reg - DATA0);
5380 else if (rop.mode == AREG)
5381 mask = 1 << (rop.reg - ADDR0 + 8);
5382 else if (rop.mode == FPREG)
5383 mask = 1 << (rop.reg - FP0 + 16);
5384 else if (rop.mode == CONTROL
5387 else if (rop.mode == CONTROL
5390 else if (rop.mode == CONTROL
5395 as_bad (_("bad register list"));
5396 ignore_rest_of_line ();
5400 S_SET_SEGMENT (line_label, reg_section);
5401 S_SET_VALUE (line_label, ~mask);
5402 symbol_set_frag (line_label, &zero_address_frag);
5405 mri_comment_end (stop, stopc);
5407 demand_empty_rest_of_line ();
5410 /* This structure is used for the MRI SAVE and RESTORE pseudo-ops. */
5414 struct save_opts *next;
5416 int symbols_case_sensitive;
5424 /* FIXME: We don't save OPT S. */
5427 /* This variable holds the stack of saved options. */
5429 static struct save_opts *save_stack;
5431 /* The MRI SAVE pseudo-op. */
5435 int ignore ATTRIBUTE_UNUSED;
5437 struct save_opts *s;
5439 s = (struct save_opts *) xmalloc (sizeof (struct save_opts));
5440 s->abspcadd = m68k_abspcadd;
5441 s->symbols_case_sensitive = symbols_case_sensitive;
5442 s->keep_locals = flag_keep_locals;
5443 s->short_refs = flag_short_refs;
5444 s->architecture = current_architecture;
5445 s->quick = m68k_quick;
5446 s->rel32 = m68k_rel32;
5447 s->listing = listing;
5448 s->no_warnings = flag_no_warnings;
5450 s->next = save_stack;
5453 demand_empty_rest_of_line ();
5456 /* The MRI RESTORE pseudo-op. */
5460 int ignore ATTRIBUTE_UNUSED;
5462 struct save_opts *s;
5464 if (save_stack == NULL)
5466 as_bad (_("restore without save"));
5467 ignore_rest_of_line ();
5472 save_stack = s->next;
5474 m68k_abspcadd = s->abspcadd;
5475 symbols_case_sensitive = s->symbols_case_sensitive;
5476 flag_keep_locals = s->keep_locals;
5477 flag_short_refs = s->short_refs;
5478 current_architecture = s->architecture;
5479 m68k_quick = s->quick;
5480 m68k_rel32 = s->rel32;
5481 listing = s->listing;
5482 flag_no_warnings = s->no_warnings;
5486 demand_empty_rest_of_line ();
5489 /* Types of MRI structured control directives. */
5491 enum mri_control_type
5499 /* This structure is used to stack the MRI structured control
5502 struct mri_control_info
5504 /* The directive within which this one is enclosed. */
5505 struct mri_control_info *outer;
5507 /* The type of directive. */
5508 enum mri_control_type type;
5510 /* Whether an ELSE has been in an IF. */
5513 /* The add or sub statement at the end of a FOR. */
5516 /* The label of the top of a FOR or REPEAT loop. */
5519 /* The label to jump to for the next iteration, or the else
5520 expression of a conditional. */
5523 /* The label to jump to to break out of the loop, or the label past
5524 the end of a conditional. */
5528 /* The stack of MRI structured control directives. */
5530 static struct mri_control_info *mri_control_stack;
5532 /* The current MRI structured control directive index number, used to
5533 generate label names. */
5535 static int mri_control_index;
5537 /* Some function prototypes. */
5539 static void mri_assemble PARAMS ((char *));
5540 static char *mri_control_label PARAMS ((void));
5541 static struct mri_control_info *push_mri_control
5542 PARAMS ((enum mri_control_type));
5543 static void pop_mri_control PARAMS ((void));
5544 static int parse_mri_condition PARAMS ((int *));
5545 static int parse_mri_control_operand
5546 PARAMS ((int *, char **, char **, char **, char **));
5547 static int swap_mri_condition PARAMS ((int));
5548 static int reverse_mri_condition PARAMS ((int));
5549 static void build_mri_control_operand
5550 PARAMS ((int, int, char *, char *, char *, char *, const char *,
5551 const char *, int));
5552 static void parse_mri_control_expression
5553 PARAMS ((char *, int, const char *, const char *, int));
5555 /* Assemble an instruction for an MRI structured control directive. */
5563 /* md_assemble expects the opcode to be in lower case. */
5564 for (s = str; *s != ' ' && *s != '\0'; s++)
5570 /* Generate a new MRI label structured control directive label name. */
5573 mri_control_label ()
5577 n = (char *) xmalloc (20);
5578 sprintf (n, "%smc%d", FAKE_LABEL_NAME, mri_control_index);
5579 ++mri_control_index;
5583 /* Create a new MRI structured control directive. */
5585 static struct mri_control_info *
5586 push_mri_control (type)
5587 enum mri_control_type type;
5589 struct mri_control_info *n;
5591 n = (struct mri_control_info *) xmalloc (sizeof (struct mri_control_info));
5595 if (type == mri_if || type == mri_while)
5598 n->top = mri_control_label ();
5599 n->next = mri_control_label ();
5600 n->bottom = mri_control_label ();
5602 n->outer = mri_control_stack;
5603 mri_control_stack = n;
5608 /* Pop off the stack of MRI structured control directives. */
5613 struct mri_control_info *n;
5615 n = mri_control_stack;
5616 mri_control_stack = n->outer;
5624 /* Recognize a condition code in an MRI structured control expression. */
5627 parse_mri_condition (pcc)
5632 know (*input_line_pointer == '<');
5634 ++input_line_pointer;
5635 c1 = *input_line_pointer++;
5636 c2 = *input_line_pointer++;
5638 if (*input_line_pointer != '>')
5640 as_bad (_("syntax error in structured control directive"));
5644 ++input_line_pointer;
5650 *pcc = (c1 << 8) | c2;
5655 /* Parse a single operand in an MRI structured control expression. */
5658 parse_mri_control_operand (pcc, leftstart, leftstop, rightstart, rightstop)
5675 if (*input_line_pointer == '<')
5677 /* It's just a condition code. */
5678 return parse_mri_condition (pcc);
5681 /* Look ahead for the condition code. */
5682 for (s = input_line_pointer; *s != '\0'; ++s)
5684 if (*s == '<' && s[1] != '\0' && s[2] != '\0' && s[3] == '>')
5689 as_bad (_("missing condition code in structured control directive"));
5693 *leftstart = input_line_pointer;
5695 if (*leftstop > *leftstart
5696 && ((*leftstop)[-1] == ' ' || (*leftstop)[-1] == '\t'))
5699 input_line_pointer = s;
5700 if (! parse_mri_condition (pcc))
5703 /* Look ahead for AND or OR or end of line. */
5704 for (s = input_line_pointer; *s != '\0'; ++s)
5706 /* We must make sure we don't misinterpret AND/OR at the end of labels!
5707 if d0 <eq> #FOOAND and d1 <ne> #BAROR then
5709 if ( ( s == input_line_pointer
5712 && ( ( strncasecmp (s, "AND", 3) == 0
5713 && (s[3] == '.' || ! is_part_of_name (s[3])))
5714 || ( strncasecmp (s, "OR", 2) == 0
5715 && (s[2] == '.' || ! is_part_of_name (s[2])))))
5719 *rightstart = input_line_pointer;
5721 if (*rightstop > *rightstart
5722 && ((*rightstop)[-1] == ' ' || (*rightstop)[-1] == '\t'))
5725 input_line_pointer = s;
5730 #define MCC(b1, b2) (((b1) << 8) | (b2))
5732 /* Swap the sense of a condition. This changes the condition so that
5733 it generates the same result when the operands are swapped. */
5736 swap_mri_condition (cc)
5741 case MCC ('h', 'i'): return MCC ('c', 's');
5742 case MCC ('l', 's'): return MCC ('c', 'c');
5743 /* <HS> is an alias for <CC> */
5744 case MCC ('h', 's'):
5745 case MCC ('c', 'c'): return MCC ('l', 's');
5746 /* <LO> is an alias for <CS> */
5747 case MCC ('l', 'o'):
5748 case MCC ('c', 's'): return MCC ('h', 'i');
5749 case MCC ('p', 'l'): return MCC ('m', 'i');
5750 case MCC ('m', 'i'): return MCC ('p', 'l');
5751 case MCC ('g', 'e'): return MCC ('l', 'e');
5752 case MCC ('l', 't'): return MCC ('g', 't');
5753 case MCC ('g', 't'): return MCC ('l', 't');
5754 case MCC ('l', 'e'): return MCC ('g', 'e');
5755 /* issue a warning for conditions we can not swap */
5756 case MCC ('n', 'e'): return MCC ('n', 'e'); // no problem here
5757 case MCC ('e', 'q'): return MCC ('e', 'q'); // also no problem
5758 case MCC ('v', 'c'):
5759 case MCC ('v', 's'):
5761 as_warn (_("Condition <%c%c> in structured control directive can not be encoded correctly"),
5762 (char) (cc >> 8), (char) (cc));
5768 /* Reverse the sense of a condition. */
5771 reverse_mri_condition (cc)
5776 case MCC ('h', 'i'): return MCC ('l', 's');
5777 case MCC ('l', 's'): return MCC ('h', 'i');
5778 /* <HS> is an alias for <CC> */
5779 case MCC ('h', 's'): return MCC ('l', 'o');
5780 case MCC ('c', 'c'): return MCC ('c', 's');
5781 /* <LO> is an alias for <CS> */
5782 case MCC ('l', 'o'): return MCC ('h', 's');
5783 case MCC ('c', 's'): return MCC ('c', 'c');
5784 case MCC ('n', 'e'): return MCC ('e', 'q');
5785 case MCC ('e', 'q'): return MCC ('n', 'e');
5786 case MCC ('v', 'c'): return MCC ('v', 's');
5787 case MCC ('v', 's'): return MCC ('v', 'c');
5788 case MCC ('p', 'l'): return MCC ('m', 'i');
5789 case MCC ('m', 'i'): return MCC ('p', 'l');
5790 case MCC ('g', 'e'): return MCC ('l', 't');
5791 case MCC ('l', 't'): return MCC ('g', 'e');
5792 case MCC ('g', 't'): return MCC ('l', 'e');
5793 case MCC ('l', 'e'): return MCC ('g', 't');
5798 /* Build an MRI structured control expression. This generates test
5799 and branch instructions. It goes to TRUELAB if the condition is
5800 true, and to FALSELAB if the condition is false. Exactly one of
5801 TRUELAB and FALSELAB will be NULL, meaning to fall through. QUAL
5802 is the size qualifier for the expression. EXTENT is the size to
5803 use for the branch. */
5806 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
5807 rightstop, truelab, falselab, extent)
5814 const char *truelab;
5815 const char *falselab;
5821 if (leftstart != NULL)
5823 struct m68k_op leftop, rightop;
5826 /* Swap the compare operands, if necessary, to produce a legal
5827 m68k compare instruction. Comparing a register operand with
5828 a non-register operand requires the register to be on the
5829 right (cmp, cmpa). Comparing an immediate value with
5830 anything requires the immediate value to be on the left
5835 (void) m68k_ip_op (leftstart, &leftop);
5840 (void) m68k_ip_op (rightstart, &rightop);
5843 if (rightop.mode == IMMED
5844 || ((leftop.mode == DREG || leftop.mode == AREG)
5845 && (rightop.mode != DREG && rightop.mode != AREG)))
5849 /* Correct conditional handling:
5850 if #1 <lt> d0 then ;means if (1 < d0)
5856 cmp #1,d0 if we do *not* swap the operands
5857 bgt true we need the swapped condition!
5864 leftstart = rightstart;
5867 leftstop = rightstop;
5870 cc = swap_mri_condition (cc);
5874 if (truelab == NULL)
5876 cc = reverse_mri_condition (cc);
5880 if (leftstart != NULL)
5882 buf = (char *) xmalloc (20
5883 + (leftstop - leftstart)
5884 + (rightstop - rightstart));
5890 *s++ = TOLOWER (qual);
5892 memcpy (s, leftstart, leftstop - leftstart);
5893 s += leftstop - leftstart;
5895 memcpy (s, rightstart, rightstop - rightstart);
5896 s += rightstop - rightstart;
5902 buf = (char *) xmalloc (20 + strlen (truelab));
5908 *s++ = TOLOWER (extent);
5910 strcpy (s, truelab);
5915 /* Parse an MRI structured control expression. This generates test
5916 and branch instructions. STOP is where the expression ends. It
5917 goes to TRUELAB if the condition is true, and to FALSELAB if the
5918 condition is false. Exactly one of TRUELAB and FALSELAB will be
5919 NULL, meaning to fall through. QUAL is the size qualifier for the
5920 expression. EXTENT is the size to use for the branch. */
5923 parse_mri_control_expression (stop, qual, truelab, falselab, extent)
5926 const char *truelab;
5927 const char *falselab;
5940 if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
5941 &rightstart, &rightstop))
5947 if (strncasecmp (input_line_pointer, "AND", 3) == 0)
5951 if (falselab != NULL)
5954 flab = mri_control_label ();
5956 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
5957 rightstop, (const char *) NULL, flab, extent);
5959 input_line_pointer += 3;
5960 if (*input_line_pointer != '.'
5961 || input_line_pointer[1] == '\0')
5965 qual = input_line_pointer[1];
5966 input_line_pointer += 2;
5969 if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
5970 &rightstart, &rightstop))
5976 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
5977 rightstop, truelab, falselab, extent);
5979 if (falselab == NULL)
5982 else if (strncasecmp (input_line_pointer, "OR", 2) == 0)
5986 if (truelab != NULL)
5989 tlab = mri_control_label ();
5991 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
5992 rightstop, tlab, (const char *) NULL, extent);
5994 input_line_pointer += 2;
5995 if (*input_line_pointer != '.'
5996 || input_line_pointer[1] == '\0')
6000 qual = input_line_pointer[1];
6001 input_line_pointer += 2;
6004 if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
6005 &rightstart, &rightstop))
6011 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6012 rightstop, truelab, falselab, extent);
6014 if (truelab == NULL)
6019 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6020 rightstop, truelab, falselab, extent);
6024 if (input_line_pointer != stop)
6025 as_bad (_("syntax error in structured control directive"));
6028 /* Handle the MRI IF pseudo-op. This may be a structured control
6029 directive, or it may be a regular assembler conditional, depending
6038 struct mri_control_info *n;
6040 /* A structured control directive must end with THEN with an
6041 optional qualifier. */
6042 s = input_line_pointer;
6043 /* We only accept '*' as introduction of comments if preceded by white space
6044 or at first column of a line (I think this can't actually happen here?)
6045 This is important when assembling:
6046 if d0 <ne> 12(a0,d0*2) then
6047 if d0 <ne> #CONST*20 then */
6048 while ( ! ( is_end_of_line[(unsigned char) *s]
6051 && ( s == input_line_pointer
6053 || *(s-1) == '\t'))))
6056 while (s > input_line_pointer && (*s == ' ' || *s == '\t'))
6059 if (s - input_line_pointer > 1
6063 if (s - input_line_pointer < 3
6064 || strncasecmp (s - 3, "THEN", 4) != 0)
6068 as_bad (_("missing then"));
6069 ignore_rest_of_line ();
6073 /* It's a conditional. */
6078 /* Since this might be a conditional if, this pseudo-op will be
6079 called even if we are supported to be ignoring input. Double
6080 check now. Clobber *input_line_pointer so that ignore_input
6081 thinks that this is not a special pseudo-op. */
6082 c = *input_line_pointer;
6083 *input_line_pointer = 0;
6084 if (ignore_input ())
6086 *input_line_pointer = c;
6087 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6088 ++input_line_pointer;
6089 demand_empty_rest_of_line ();
6092 *input_line_pointer = c;
6094 n = push_mri_control (mri_if);
6096 parse_mri_control_expression (s - 3, qual, (const char *) NULL,
6097 n->next, s[1] == '.' ? s[2] : '\0');
6100 input_line_pointer = s + 3;
6102 input_line_pointer = s + 1;
6106 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6107 ++input_line_pointer;
6110 demand_empty_rest_of_line ();
6113 /* Handle the MRI else pseudo-op. If we are currently doing an MRI
6114 structured IF, associate the ELSE with the IF. Otherwise, assume
6115 it is a conditional else. */
6126 && (mri_control_stack == NULL
6127 || mri_control_stack->type != mri_if
6128 || mri_control_stack->else_seen))
6134 c = *input_line_pointer;
6135 *input_line_pointer = 0;
6136 if (ignore_input ())
6138 *input_line_pointer = c;
6139 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6140 ++input_line_pointer;
6141 demand_empty_rest_of_line ();
6144 *input_line_pointer = c;
6146 if (mri_control_stack == NULL
6147 || mri_control_stack->type != mri_if
6148 || mri_control_stack->else_seen)
6150 as_bad (_("else without matching if"));
6151 ignore_rest_of_line ();
6155 mri_control_stack->else_seen = 1;
6157 buf = (char *) xmalloc (20 + strlen (mri_control_stack->bottom));
6158 q[0] = TOLOWER (qual);
6160 sprintf (buf, "bra%s %s", q, mri_control_stack->bottom);
6164 colon (mri_control_stack->next);
6168 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6169 ++input_line_pointer;
6172 demand_empty_rest_of_line ();
6175 /* Handle the MRI ENDI pseudo-op. */
6179 int ignore ATTRIBUTE_UNUSED;
6181 if (mri_control_stack == NULL
6182 || mri_control_stack->type != mri_if)
6184 as_bad (_("endi without matching if"));
6185 ignore_rest_of_line ();
6189 /* ignore_input will not return true for ENDI, so we don't need to
6190 worry about checking it again here. */
6192 if (! mri_control_stack->else_seen)
6193 colon (mri_control_stack->next);
6194 colon (mri_control_stack->bottom);
6200 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6201 ++input_line_pointer;
6204 demand_empty_rest_of_line ();
6207 /* Handle the MRI BREAK pseudo-op. */
6210 s_mri_break (extent)
6213 struct mri_control_info *n;
6217 n = mri_control_stack;
6219 && n->type != mri_for
6220 && n->type != mri_repeat
6221 && n->type != mri_while)
6225 as_bad (_("break outside of structured loop"));
6226 ignore_rest_of_line ();
6230 buf = (char *) xmalloc (20 + strlen (n->bottom));
6231 ex[0] = TOLOWER (extent);
6233 sprintf (buf, "bra%s %s", ex, n->bottom);
6239 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6240 ++input_line_pointer;
6243 demand_empty_rest_of_line ();
6246 /* Handle the MRI NEXT pseudo-op. */
6252 struct mri_control_info *n;
6256 n = mri_control_stack;
6258 && n->type != mri_for
6259 && n->type != mri_repeat
6260 && n->type != mri_while)
6264 as_bad (_("next outside of structured loop"));
6265 ignore_rest_of_line ();
6269 buf = (char *) xmalloc (20 + strlen (n->next));
6270 ex[0] = TOLOWER (extent);
6272 sprintf (buf, "bra%s %s", ex, n->next);
6278 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6279 ++input_line_pointer;
6282 demand_empty_rest_of_line ();
6285 /* Handle the MRI FOR pseudo-op. */
6291 const char *varstart, *varstop;
6292 const char *initstart, *initstop;
6293 const char *endstart, *endstop;
6294 const char *bystart, *bystop;
6298 struct mri_control_info *n;
6304 FOR.q var = init { TO | DOWNTO } end [ BY by ] DO.e
6308 varstart = input_line_pointer;
6310 /* Look for the '='. */
6311 while (! is_end_of_line[(unsigned char) *input_line_pointer]
6312 && *input_line_pointer != '=')
6313 ++input_line_pointer;
6314 if (*input_line_pointer != '=')
6316 as_bad (_("missing ="));
6317 ignore_rest_of_line ();
6321 varstop = input_line_pointer;
6322 if (varstop > varstart
6323 && (varstop[-1] == ' ' || varstop[-1] == '\t'))
6326 ++input_line_pointer;
6328 initstart = input_line_pointer;
6330 /* Look for TO or DOWNTO. */
6333 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6335 if (strncasecmp (input_line_pointer, "TO", 2) == 0
6336 && ! is_part_of_name (input_line_pointer[2]))
6338 initstop = input_line_pointer;
6339 input_line_pointer += 2;
6342 if (strncasecmp (input_line_pointer, "DOWNTO", 6) == 0
6343 && ! is_part_of_name (input_line_pointer[6]))
6345 initstop = input_line_pointer;
6347 input_line_pointer += 6;
6350 ++input_line_pointer;
6352 if (initstop == NULL)
6354 as_bad (_("missing to or downto"));
6355 ignore_rest_of_line ();
6358 if (initstop > initstart
6359 && (initstop[-1] == ' ' || initstop[-1] == '\t'))
6363 endstart = input_line_pointer;
6365 /* Look for BY or DO. */
6368 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6370 if (strncasecmp (input_line_pointer, "BY", 2) == 0
6371 && ! is_part_of_name (input_line_pointer[2]))
6373 endstop = input_line_pointer;
6375 input_line_pointer += 2;
6378 if (strncasecmp (input_line_pointer, "DO", 2) == 0
6379 && (input_line_pointer[2] == '.'
6380 || ! is_part_of_name (input_line_pointer[2])))
6382 endstop = input_line_pointer;
6383 input_line_pointer += 2;
6386 ++input_line_pointer;
6388 if (endstop == NULL)
6390 as_bad (_("missing do"));
6391 ignore_rest_of_line ();
6394 if (endstop > endstart
6395 && (endstop[-1] == ' ' || endstop[-1] == '\t'))
6401 bystop = bystart + 2;
6406 bystart = input_line_pointer;
6410 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6412 if (strncasecmp (input_line_pointer, "DO", 2) == 0
6413 && (input_line_pointer[2] == '.'
6414 || ! is_part_of_name (input_line_pointer[2])))
6416 bystop = input_line_pointer;
6417 input_line_pointer += 2;
6420 ++input_line_pointer;
6424 as_bad (_("missing do"));
6425 ignore_rest_of_line ();
6428 if (bystop > bystart
6429 && (bystop[-1] == ' ' || bystop[-1] == '\t'))
6433 if (*input_line_pointer != '.')
6437 extent = input_line_pointer[1];
6438 input_line_pointer += 2;
6441 /* We have fully parsed the FOR operands. Now build the loop. */
6443 n = push_mri_control (mri_for);
6445 buf = (char *) xmalloc (50 + (input_line_pointer - varstart));
6454 *s++ = TOLOWER (qual);
6456 memcpy (s, initstart, initstop - initstart);
6457 s += initstop - initstart;
6459 memcpy (s, varstart, varstop - varstart);
6460 s += varstop - varstart;
6472 *s++ = TOLOWER (qual);
6474 memcpy (s, endstart, endstop - endstart);
6475 s += endstop - endstart;
6477 memcpy (s, varstart, varstop - varstart);
6478 s += varstop - varstart;
6483 ex[0] = TOLOWER (extent);
6486 sprintf (buf, "blt%s %s", ex, n->bottom);
6488 sprintf (buf, "bgt%s %s", ex, n->bottom);
6491 /* Put together the add or sub instruction used by ENDF. */
6499 *s++ = TOLOWER (qual);
6501 memcpy (s, bystart, bystop - bystart);
6502 s += bystop - bystart;
6504 memcpy (s, varstart, varstop - varstart);
6505 s += varstop - varstart;
6511 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6512 ++input_line_pointer;
6515 demand_empty_rest_of_line ();
6518 /* Handle the MRI ENDF pseudo-op. */
6522 int ignore ATTRIBUTE_UNUSED;
6524 if (mri_control_stack == NULL
6525 || mri_control_stack->type != mri_for)
6527 as_bad (_("endf without for"));
6528 ignore_rest_of_line ();
6532 colon (mri_control_stack->next);
6534 mri_assemble (mri_control_stack->incr);
6536 sprintf (mri_control_stack->incr, "bra %s", mri_control_stack->top);
6537 mri_assemble (mri_control_stack->incr);
6539 free (mri_control_stack->incr);
6541 colon (mri_control_stack->bottom);
6547 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6548 ++input_line_pointer;
6551 demand_empty_rest_of_line ();
6554 /* Handle the MRI REPEAT pseudo-op. */
6557 s_mri_repeat (ignore)
6558 int ignore ATTRIBUTE_UNUSED;
6560 struct mri_control_info *n;
6562 n = push_mri_control (mri_repeat);
6566 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6567 ++input_line_pointer;
6569 demand_empty_rest_of_line ();
6572 /* Handle the MRI UNTIL pseudo-op. */
6580 if (mri_control_stack == NULL
6581 || mri_control_stack->type != mri_repeat)
6583 as_bad (_("until without repeat"));
6584 ignore_rest_of_line ();
6588 colon (mri_control_stack->next);
6590 for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++)
6593 parse_mri_control_expression (s, qual, (const char *) NULL,
6594 mri_control_stack->top, '\0');
6596 colon (mri_control_stack->bottom);
6598 input_line_pointer = s;
6604 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6605 ++input_line_pointer;
6608 demand_empty_rest_of_line ();
6611 /* Handle the MRI WHILE pseudo-op. */
6619 struct mri_control_info *n;
6621 s = input_line_pointer;
6622 /* We only accept '*' as introduction of comments if preceded by white space
6623 or at first column of a line (I think this can't actually happen here?)
6624 This is important when assembling:
6625 while d0 <ne> 12(a0,d0*2) do
6626 while d0 <ne> #CONST*20 do */
6627 while ( ! ( is_end_of_line[(unsigned char) *s]
6630 && ( s == input_line_pointer
6632 || *(s-1) == '\t'))))
6635 while (*s == ' ' || *s == '\t')
6637 if (s - input_line_pointer > 1
6640 if (s - input_line_pointer < 2
6641 || strncasecmp (s - 1, "DO", 2) != 0)
6643 as_bad (_("missing do"));
6644 ignore_rest_of_line ();
6648 n = push_mri_control (mri_while);
6652 parse_mri_control_expression (s - 1, qual, (const char *) NULL, n->bottom,
6653 s[1] == '.' ? s[2] : '\0');
6655 input_line_pointer = s + 1;
6656 if (*input_line_pointer == '.')
6657 input_line_pointer += 2;
6661 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6662 ++input_line_pointer;
6665 demand_empty_rest_of_line ();
6668 /* Handle the MRI ENDW pseudo-op. */
6672 int ignore ATTRIBUTE_UNUSED;
6676 if (mri_control_stack == NULL
6677 || mri_control_stack->type != mri_while)
6679 as_bad (_("endw without while"));
6680 ignore_rest_of_line ();
6684 buf = (char *) xmalloc (20 + strlen (mri_control_stack->next));
6685 sprintf (buf, "bra %s", mri_control_stack->next);
6689 colon (mri_control_stack->bottom);
6695 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6696 ++input_line_pointer;
6699 demand_empty_rest_of_line ();
6704 * Invocation line includes a switch not recognized by the base assembler.
6705 * See if it's a processor-specific option. These are:
6707 * -[A]m[c]68000, -[A]m[c]68008, -[A]m[c]68010, -[A]m[c]68020, -[A]m[c]68030, -[A]m[c]68040
6708 * -[A]m[c]68881, -[A]m[c]68882, -[A]m[c]68851
6709 * Select the architecture. Instructions or features not
6710 * supported by the selected architecture cause fatal
6711 * errors. More than one may be specified. The default is
6712 * -m68020 -m68851 -m68881. Note that -m68008 is a synonym
6713 * for -m68000, and -m68882 is a synonym for -m68881.
6714 * -[A]m[c]no-68851, -[A]m[c]no-68881
6715 * Don't accept 688?1 instructions. (The "c" is kind of silly,
6716 * so don't use or document it, but that's the way the parsing
6719 * -pic Indicates PIC.
6720 * -k Indicates PIC. (Sun 3 only.)
6721 * --pcrel Never turn PC-relative branches into absolute jumps.
6724 * Permit `|' to be used in expressions.
6729 CONST char *md_shortopts = "lSA:m:kQ:V";
6731 CONST char *md_shortopts = "lSA:m:k";
6734 struct option md_longopts[] = {
6735 #define OPTION_PIC (OPTION_MD_BASE)
6736 {"pic", no_argument, NULL, OPTION_PIC},
6737 #define OPTION_REGISTER_PREFIX_OPTIONAL (OPTION_MD_BASE + 1)
6738 {"register-prefix-optional", no_argument, NULL,
6739 OPTION_REGISTER_PREFIX_OPTIONAL},
6740 #define OPTION_BITWISE_OR (OPTION_MD_BASE + 2)
6741 {"bitwise-or", no_argument, NULL, OPTION_BITWISE_OR},
6742 #define OPTION_BASE_SIZE_DEFAULT_16 (OPTION_MD_BASE + 3)
6743 {"base-size-default-16", no_argument, NULL, OPTION_BASE_SIZE_DEFAULT_16},
6744 #define OPTION_BASE_SIZE_DEFAULT_32 (OPTION_MD_BASE + 4)
6745 {"base-size-default-32", no_argument, NULL, OPTION_BASE_SIZE_DEFAULT_32},
6746 #define OPTION_DISP_SIZE_DEFAULT_16 (OPTION_MD_BASE + 5)
6747 {"disp-size-default-16", no_argument, NULL, OPTION_DISP_SIZE_DEFAULT_16},
6748 #define OPTION_DISP_SIZE_DEFAULT_32 (OPTION_MD_BASE + 6)
6749 {"disp-size-default-32", no_argument, NULL, OPTION_DISP_SIZE_DEFAULT_32},
6750 #define OPTION_PCREL (OPTION_MD_BASE + 7)
6751 {"pcrel", no_argument, NULL, OPTION_PCREL},
6752 {NULL, no_argument, NULL, 0}
6754 size_t md_longopts_size = sizeof (md_longopts);
6757 md_parse_option (c, arg)
6763 case 'l': /* -l means keep external to 2 bit offset
6764 rather than 16 bit one */
6765 flag_short_refs = 1;
6768 case 'S': /* -S means that jbsr's always turn into
6770 flag_long_jumps = 1;
6773 case OPTION_PCREL: /* --pcrel means never turn PC-relative
6774 branches into absolute jumps. */
6775 flag_keep_pcrel = 1;
6781 /* intentional fall-through */
6784 if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-')
6788 const char *oarg = arg;
6794 if (arg[0] == 'c' && arg[1] == '6')
6797 for (i = 0; i < n_archs; i++)
6798 if (!strcmp (arg, archs[i].name))
6803 as_bad (_("unrecognized option `%s'"), oarg);
6806 arch = archs[i].arch;
6809 else if (arch == m68851)
6818 if (arg[0] == 'c' && arg[1] == '6')
6821 for (i = 0; i < n_archs; i++)
6822 if (!strcmp (arg, archs[i].name))
6824 unsigned long arch = archs[i].arch;
6825 if (cpu_of_arch (arch))
6826 /* It's a cpu spec. */
6828 current_architecture &= ~m68000up;
6829 current_architecture |= arch;
6831 else if (arch == m68881)
6833 current_architecture |= m68881;
6836 else if (arch == m68851)
6838 current_architecture |= m68851;
6848 as_bad (_("unrecognized architecture specification `%s'"), arg);
6857 break; /* -pic, Position Independent Code */
6859 case OPTION_REGISTER_PREFIX_OPTIONAL:
6860 flag_reg_prefix_optional = 1;
6861 reg_prefix_optional_seen = 1;
6864 /* -V: SVR4 argument to print version ID. */
6866 print_version_id ();
6869 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
6870 should be emitted or not. FIXME: Not implemented. */
6874 case OPTION_BITWISE_OR:
6879 n = (char *) xmalloc (strlen (m68k_comment_chars) + 1);
6881 for (s = m68k_comment_chars; *s != '\0'; s++)
6885 m68k_comment_chars = n;
6889 case OPTION_BASE_SIZE_DEFAULT_16:
6890 m68k_index_width_default = SIZE_WORD;
6893 case OPTION_BASE_SIZE_DEFAULT_32:
6894 m68k_index_width_default = SIZE_LONG;
6897 case OPTION_DISP_SIZE_DEFAULT_16:
6899 m68k_rel32_from_cmdline = 1;
6902 case OPTION_DISP_SIZE_DEFAULT_32:
6904 m68k_rel32_from_cmdline = 1;
6915 md_show_usage (stream)
6918 fprintf (stream, _("\
6920 -l use 1 word for refs to undefined symbols [default 2]\n\
6921 -m68000 | -m68008 | -m68010 | -m68020 | -m68030 | -m68040 | -m68060 |\n\
6922 -m68302 | -m68331 | -m68332 | -m68333 | -m68340 | -m68360 | -mcpu32 |\n\
6923 -m5200 | -m5202 | -m5204 | -m5206 | -m5206e | -m5307 | -m5407\n\
6924 specify variant of 680X0 architecture [default 68020]\n\
6925 -m68881 | -m68882 | -mno-68881 | -mno-68882\n\
6926 target has/lacks floating-point coprocessor\n\
6927 [default yes for 68020, 68030, and cpu32]\n"));
6928 fprintf (stream, _("\
6929 -m68851 | -mno-68851\n\
6930 target has/lacks memory-management unit coprocessor\n\
6931 [default yes for 68020 and up]\n\
6932 -pic, -k generate position independent code\n\
6933 -S turn jbsr into jsr\n\
6934 --pcrel never turn PC-relative branches into absolute jumps\n\
6935 --register-prefix-optional\n\
6936 recognize register names without prefix character\n\
6937 --bitwise-or do not treat `|' as a comment character\n"));
6938 fprintf (stream, _("\
6939 --base-size-default-16 base reg without size is 16 bits\n\
6940 --base-size-default-32 base reg without size is 32 bits (default)\n\
6941 --disp-size-default-16 displacement with unknown size is 16 bits\n\
6942 --disp-size-default-32 displacement with unknown size is 32 bits (default)\n"));
6947 /* TEST2: Test md_assemble() */
6948 /* Warning, this routine probably doesn't work anymore */
6952 struct m68k_it the_ins;
6960 if (!gets (buf) || !*buf)
6962 if (buf[0] == '|' || buf[1] == '.')
6964 for (cp = buf; *cp; cp++)
6969 memset (&the_ins, '\0', sizeof (the_ins));
6970 m68k_ip (&the_ins, buf);
6973 printf (_("Error %s in %s\n"), the_ins.error, buf);
6977 printf (_("Opcode(%d.%s): "), the_ins.numo, the_ins.args);
6978 for (n = 0; n < the_ins.numo; n++)
6979 printf (" 0x%x", the_ins.opcode[n] & 0xffff);
6981 print_the_insn (&the_ins.opcode[0], stdout);
6982 (void) putchar ('\n');
6984 for (n = 0; n < strlen (the_ins.args) / 2; n++)
6986 if (the_ins.operands[n].error)
6988 printf ("op%d Error %s in %s\n", n, the_ins.operands[n].error, buf);
6991 printf ("mode %d, reg %d, ", the_ins.operands[n].mode, the_ins.operands[n].reg);
6992 if (the_ins.operands[n].b_const)
6993 printf ("Constant: '%.*s', ", 1 + the_ins.operands[n].e_const - the_ins.operands[n].b_const, the_ins.operands[n].b_const);
6994 printf ("ireg %d, isiz %d, imul %d, ", the_ins.operands[n].ireg, the_ins.operands[n].isiz, the_ins.operands[n].imul);
6995 if (the_ins.operands[n].b_iadd)
6996 printf ("Iadd: '%.*s',", 1 + the_ins.operands[n].e_iadd - the_ins.operands[n].b_iadd, the_ins.operands[n].b_iadd);
6997 (void) putchar ('\n');
7009 while (*str && *str != ' ')
7011 if (str[-1] == ':' || str[1] == '=')
7018 /* Possible states for relaxation:
7020 0 0 branch offset byte (bra, etc)
7024 1 0 indexed offsets byte a0@(32,d4:w:1) etc
7028 2 0 two-offset index word-word a0@(32,d4)@(45) etc
7035 /* We have no need to default values of symbols. */
7038 md_undefined_symbol (name)
7039 char *name ATTRIBUTE_UNUSED;
7044 /* Round up a section size to the appropriate boundary. */
7046 md_section_align (segment, size)
7047 segT segment ATTRIBUTE_UNUSED;
7051 #ifdef BFD_ASSEMBLER
7052 /* For a.out, force the section size to be aligned. If we don't do
7053 this, BFD will align it for us, but it will not write out the
7054 final bytes of the section. This may be a bug in BFD, but it is
7055 easier to fix it here since that is how the other a.out targets
7059 align = bfd_get_section_alignment (stdoutput, segment);
7060 size = ((size + (1 << align) - 1) & ((valueT) -1 << align));
7067 /* Exactly what point is a PC-relative offset relative TO?
7068 On the 68k, it is relative to the address of the first extension
7069 word. The difference between the addresses of the offset and the
7070 first extension word is stored in fx_pcrel_adjust. */
7072 md_pcrel_from (fixP)
7077 /* Because fx_pcrel_adjust is a char, and may be unsigned, we explicitly
7078 sign extend the value here. */
7079 adjust = ((fixP->fx_pcrel_adjust & 0xff) ^ 0x80) - 0x80;
7082 return fixP->fx_where + fixP->fx_frag->fr_address - adjust;
7085 #ifndef BFD_ASSEMBLER
7089 tc_coff_symbol_emit_hook (ignore)
7090 symbolS *ignore ATTRIBUTE_UNUSED;
7095 tc_coff_sizemachdep (frag)
7098 switch (frag->fr_subtype & 0x3)
7115 void m68k_elf_final_processing()
7117 /* Set file-specific flags if this is a cpu32 processor */
7118 if (cpu_of_arch (current_architecture) & cpu32)
7119 elf_elfheader (stdoutput)->e_flags |= EF_CPU32;