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 Please check tc-m68k.h:md_prepare_relax_scan if changing this table. */
476 relax_typeS md_relax_table[] =
478 { 127, -128, 0, TAB (BRANCHBWL, SHORT) },
479 { 32767, -32768, 2, TAB (BRANCHBWL, LONG) },
483 { 127, -128, 0, TAB (BRABSJUNC, SHORT) },
484 { 32767, -32768, 2, TAB (BRABSJUNC, LONG) },
488 { 127, -128, 0, TAB (BRABSJCOND, SHORT) },
489 { 32767, -32768, 2, TAB (BRABSJCOND, LONG) },
493 { 127, -128, 0, TAB (BRANCHBW, SHORT) },
498 { 1, 1, 0, 0 }, /* FBRANCH doesn't come BYTE */
499 { 32767, -32768, 2, TAB (FBRANCH, LONG) },
503 { 1, 1, 0, 0 }, /* DBCC doesn't come BYTE */
504 { 32767, -32768, 2, TAB (DBCCLBR, LONG) },
508 { 1, 1, 0, 0 }, /* DBCC doesn't come BYTE */
509 { 32767, -32768, 2, TAB (DBCCABSJ, LONG) },
513 { 1, 1, 0, 0 }, /* PCREL1632 doesn't come BYTE */
514 { 32767, -32768, 2, TAB (PCREL1632, LONG) },
518 { 125, -130, 0, TAB (PCINDEX, SHORT) },
519 { 32765, -32770, 2, TAB (PCINDEX, LONG) },
523 { 1, 1, 0, 0 }, /* ABSTOPCREL doesn't come BYTE */
524 { 32767, -32768, 2, TAB (ABSTOPCREL, LONG) },
529 /* These are the machine dependent pseudo-ops. These are included so
530 the assembler can work on the output from the SUN C compiler, which
534 /* This table describes all the machine specific pseudo-ops the assembler
535 has to support. The fields are:
536 pseudo-op name without dot
537 function to call to execute this pseudo-op
538 Integer arg to pass to the function
540 const pseudo_typeS md_pseudo_table[] =
542 {"data1", s_data1, 0},
543 {"data2", s_data2, 0},
546 {"skip", s_space, 0},
548 #if defined (TE_SUN3) || defined (OBJ_ELF)
549 {"align", s_align_bytes, 0},
552 {"swbeg", s_ignore, 0},
554 {"extend", float_cons, 'x'},
555 {"ldouble", float_cons, 'x'},
558 /* Dwarf2 support for Gcc. */
559 {"file", (void (*) PARAMS ((int))) dwarf2_directive_file, 0},
560 {"loc", dwarf2_directive_loc, 0},
563 /* The following pseudo-ops are supported for MRI compatibility. */
565 {"comline", s_space, 1},
567 {"mask2", s_ignore, 0},
570 {"restore", s_restore, 0},
574 {"if.b", s_mri_if, 'b'},
575 {"if.w", s_mri_if, 'w'},
576 {"if.l", s_mri_if, 'l'},
577 {"else", s_mri_else, 0},
578 {"else.s", s_mri_else, 's'},
579 {"else.l", s_mri_else, 'l'},
580 {"endi", s_mri_endi, 0},
581 {"break", s_mri_break, 0},
582 {"break.s", s_mri_break, 's'},
583 {"break.l", s_mri_break, 'l'},
584 {"next", s_mri_next, 0},
585 {"next.s", s_mri_next, 's'},
586 {"next.l", s_mri_next, 'l'},
587 {"for", s_mri_for, 0},
588 {"for.b", s_mri_for, 'b'},
589 {"for.w", s_mri_for, 'w'},
590 {"for.l", s_mri_for, 'l'},
591 {"endf", s_mri_endf, 0},
592 {"repeat", s_mri_repeat, 0},
593 {"until", s_mri_until, 0},
594 {"until.b", s_mri_until, 'b'},
595 {"until.w", s_mri_until, 'w'},
596 {"until.l", s_mri_until, 'l'},
597 {"while", s_mri_while, 0},
598 {"while.b", s_mri_while, 'b'},
599 {"while.w", s_mri_while, 'w'},
600 {"while.l", s_mri_while, 'l'},
601 {"endw", s_mri_endw, 0},
606 /* The mote pseudo ops are put into the opcode table, since they
607 don't start with a . they look like opcodes to gas.
611 extern void obj_coff_section PARAMS ((int));
614 const pseudo_typeS mote_pseudo_table[] =
627 {"xdef", s_globl, 0},
629 {"align", s_align_bytes, 0},
631 {"align", s_align_ptwo, 0},
634 {"sect", obj_coff_section, 0},
635 {"section", obj_coff_section, 0},
640 #define issbyte(x) ((x)>=-128 && (x)<=127)
641 #define isubyte(x) ((x)>=0 && (x)<=255)
642 #define issword(x) ((x)>=-32768 && (x)<=32767)
643 #define isuword(x) ((x)>=0 && (x)<=65535)
645 #define isbyte(x) ((x)>= -255 && (x)<=255)
646 #define isword(x) ((x)>=-65536 && (x)<=65535)
647 #define islong(x) (1)
649 extern char *input_line_pointer;
651 static char notend_table[256];
652 static char alt_notend_table[256];
654 (! (notend_table[(unsigned char) *s] \
656 && alt_notend_table[(unsigned char) s[1]])))
658 #if defined (M68KCOFF) && !defined (BFD_ASSEMBLER)
660 #ifdef NO_PCREL_RELOCS
663 make_pcrel_absolute(fixP, add_number)
667 register unsigned char *opcode = fixP->fx_frag->fr_opcode;
669 /* rewrite the PC relative instructions to absolute address ones.
670 * these are rumoured to be faster, and the apollo linker refuses
671 * to deal with the PC relative relocations.
673 if (opcode[0] == 0x60 && opcode[1] == 0xff) /* BRA -> JMP */
678 else if (opcode[0] == 0x61 && opcode[1] == 0xff) /* BSR -> JSR */
684 as_fatal (_("Unknown PC relative instruction"));
689 #endif /* NO_PCREL_RELOCS */
692 tc_coff_fix2rtype (fixP)
695 if (fixP->fx_tcbit && fixP->fx_size == 4)
696 return R_RELLONG_NEG;
697 #ifdef NO_PCREL_RELOCS
698 know (fixP->fx_pcrel == 0);
699 return (fixP->fx_size == 1 ? R_RELBYTE
700 : fixP->fx_size == 2 ? R_DIR16
703 return (fixP->fx_pcrel ?
704 (fixP->fx_size == 1 ? R_PCRBYTE :
705 fixP->fx_size == 2 ? R_PCRWORD :
707 (fixP->fx_size == 1 ? R_RELBYTE :
708 fixP->fx_size == 2 ? R_RELWORD :
717 /* Return zero if the reference to SYMBOL from within the same segment may
720 /* On an ELF system, we can't relax an externally visible symbol,
721 because it may be overridden by a shared library. However, if
722 TARGET_OS is "elf", then we presume that we are assembling for an
723 embedded system, in which case we don't have to worry about shared
724 libraries, and we can relax any external sym. */
726 #define relaxable_symbol(symbol) \
727 (!((S_IS_EXTERNAL (symbol) && strcmp (TARGET_OS, "elf") != 0) \
728 || S_IS_WEAK (symbol)))
730 /* Compute the relocation code for a fixup of SIZE bytes, using pc
731 relative relocation if PCREL is non-zero. PIC says whether a special
732 pic relocation was requested. */
734 static bfd_reloc_code_real_type get_reloc_code
735 PARAMS ((int, int, enum pic_relocation));
737 static bfd_reloc_code_real_type
738 get_reloc_code (size, pcrel, pic)
741 enum pic_relocation pic;
749 return BFD_RELOC_8_GOT_PCREL;
751 return BFD_RELOC_16_GOT_PCREL;
753 return BFD_RELOC_32_GOT_PCREL;
761 return BFD_RELOC_8_GOTOFF;
763 return BFD_RELOC_16_GOTOFF;
765 return BFD_RELOC_32_GOTOFF;
773 return BFD_RELOC_8_PLT_PCREL;
775 return BFD_RELOC_16_PLT_PCREL;
777 return BFD_RELOC_32_PLT_PCREL;
785 return BFD_RELOC_8_PLTOFF;
787 return BFD_RELOC_16_PLTOFF;
789 return BFD_RELOC_32_PLTOFF;
799 return BFD_RELOC_8_PCREL;
801 return BFD_RELOC_16_PCREL;
803 return BFD_RELOC_32_PCREL;
823 as_bad (_("Can not do %d byte pc-relative relocation"), size);
825 as_bad (_("Can not do %d byte pc-relative pic relocation"), size);
830 as_bad (_("Can not do %d byte relocation"), size);
832 as_bad (_("Can not do %d byte pic relocation"), size);
835 return BFD_RELOC_NONE;
838 /* Here we decide which fixups can be adjusted to make them relative
839 to the beginning of the section instead of the symbol. Basically
840 we need to make sure that the dynamic relocations are done
841 correctly, so in some cases we force the original symbol to be
844 tc_m68k_fix_adjustable (fixP)
847 /* Prevent all adjustments to global symbols. */
848 if (! relaxable_symbol (fixP->fx_addsy))
851 /* adjust_reloc_syms doesn't know about the GOT */
852 switch (fixP->fx_r_type)
854 case BFD_RELOC_8_GOT_PCREL:
855 case BFD_RELOC_16_GOT_PCREL:
856 case BFD_RELOC_32_GOT_PCREL:
857 case BFD_RELOC_8_GOTOFF:
858 case BFD_RELOC_16_GOTOFF:
859 case BFD_RELOC_32_GOTOFF:
860 case BFD_RELOC_8_PLT_PCREL:
861 case BFD_RELOC_16_PLT_PCREL:
862 case BFD_RELOC_32_PLT_PCREL:
863 case BFD_RELOC_8_PLTOFF:
864 case BFD_RELOC_16_PLTOFF:
865 case BFD_RELOC_32_PLTOFF:
868 case BFD_RELOC_VTABLE_INHERIT:
869 case BFD_RELOC_VTABLE_ENTRY:
879 #define get_reloc_code(SIZE,PCREL,OTHER) NO_RELOC
881 #define relaxable_symbol(symbol) 1
888 tc_gen_reloc (section, fixp)
893 bfd_reloc_code_real_type code;
895 /* If the tcbit is set, then this was a fixup of a negative value
896 that was never resolved. We do not have a reloc to handle this,
897 so just return. We assume that other code will have detected this
898 situation and produced a helpful error message, so we just tell the
899 user that the reloc cannot be produced. */
903 as_bad_where (fixp->fx_file, fixp->fx_line,
904 _("Unable to produce reloc against symbol '%s'"),
905 S_GET_NAME (fixp->fx_addsy));
909 if (fixp->fx_r_type != BFD_RELOC_NONE)
911 code = fixp->fx_r_type;
913 /* Since DIFF_EXPR_OK is defined in tc-m68k.h, it is possible
914 that fixup_segment converted a non-PC relative reloc into a
915 PC relative reloc. In such a case, we need to convert the
922 code = BFD_RELOC_8_PCREL;
925 code = BFD_RELOC_16_PCREL;
928 code = BFD_RELOC_32_PCREL;
930 case BFD_RELOC_8_PCREL:
931 case BFD_RELOC_16_PCREL:
932 case BFD_RELOC_32_PCREL:
933 case BFD_RELOC_8_GOT_PCREL:
934 case BFD_RELOC_16_GOT_PCREL:
935 case BFD_RELOC_32_GOT_PCREL:
936 case BFD_RELOC_8_GOTOFF:
937 case BFD_RELOC_16_GOTOFF:
938 case BFD_RELOC_32_GOTOFF:
939 case BFD_RELOC_8_PLT_PCREL:
940 case BFD_RELOC_16_PLT_PCREL:
941 case BFD_RELOC_32_PLT_PCREL:
942 case BFD_RELOC_8_PLTOFF:
943 case BFD_RELOC_16_PLTOFF:
944 case BFD_RELOC_32_PLTOFF:
947 as_bad_where (fixp->fx_file, fixp->fx_line,
948 _("Cannot make %s relocation PC relative"),
949 bfd_get_reloc_code_name (code));
955 #define F(SZ,PCREL) (((SZ) << 1) + (PCREL))
956 switch (F (fixp->fx_size, fixp->fx_pcrel))
958 #define MAP(SZ,PCREL,TYPE) case F(SZ,PCREL): code = (TYPE); break
959 MAP (1, 0, BFD_RELOC_8);
960 MAP (2, 0, BFD_RELOC_16);
961 MAP (4, 0, BFD_RELOC_32);
962 MAP (1, 1, BFD_RELOC_8_PCREL);
963 MAP (2, 1, BFD_RELOC_16_PCREL);
964 MAP (4, 1, BFD_RELOC_32_PCREL);
972 reloc = (arelent *) xmalloc (sizeof (arelent));
973 reloc->sym_ptr_ptr = (asymbol **) xmalloc (sizeof (asymbol *));
974 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
975 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
978 reloc->addend = fixp->fx_addnumber;
983 reloc->addend = fixp->fx_addnumber;
985 reloc->addend = (section->vma
986 /* Explicit sign extension in case char is
988 + ((fixp->fx_pcrel_adjust & 0xff) ^ 0x80) - 0x80
990 + md_pcrel_from (fixp));
993 reloc->howto = bfd_reloc_type_lookup (stdoutput, code);
994 assert (reloc->howto != 0);
999 #endif /* BFD_ASSEMBLER */
1001 /* Handle of the OPCODE hash table. NULL means any use before
1002 m68k_ip_begin() will crash. */
1003 static struct hash_control *op_hash;
1005 /* Assemble an m68k instruction. */
1012 register struct m68k_op *opP;
1013 register const struct m68k_incant *opcode;
1014 register const char *s;
1015 register int tmpreg = 0, baseo = 0, outro = 0, nextword;
1016 char *pdot, *pdotmove;
1017 enum m68k_size siz1, siz2;
1021 LITTLENUM_TYPE words[6];
1022 LITTLENUM_TYPE *wordp;
1023 unsigned long ok_arch = 0;
1025 if (*instring == ' ')
1026 instring++; /* skip leading whitespace */
1028 /* Scan up to end of operation-code, which MUST end in end-of-string
1029 or exactly 1 space. */
1031 for (p = instring; *p != '\0'; p++)
1041 the_ins.error = _("No operator");
1045 /* p now points to the end of the opcode name, probably whitespace.
1046 Make sure the name is null terminated by clobbering the
1047 whitespace, look it up in the hash table, then fix it back.
1048 Remove a dot, first, since the opcode tables have none. */
1051 for (pdotmove = pdot; pdotmove < p; pdotmove++)
1052 *pdotmove = pdotmove[1];
1058 opcode = (const struct m68k_incant *) hash_find (op_hash, instring);
1063 for (pdotmove = p; pdotmove > pdot; pdotmove--)
1064 *pdotmove = pdotmove[-1];
1071 the_ins.error = _("Unknown operator");
1075 /* found a legitimate opcode, start matching operands */
1079 if (opcode->m_operands == 0)
1081 char *old = input_line_pointer;
1083 input_line_pointer = p;
1084 /* Ahh - it's a motorola style psuedo op */
1085 mote_pseudo_table[opcode->m_opnum].poc_handler
1086 (mote_pseudo_table[opcode->m_opnum].poc_val);
1087 input_line_pointer = old;
1093 if (flag_mri && opcode->m_opnum == 0)
1095 /* In MRI mode, random garbage is allowed after an instruction
1096 which accepts no operands. */
1097 the_ins.args = opcode->m_operands;
1098 the_ins.numargs = opcode->m_opnum;
1099 the_ins.numo = opcode->m_codenum;
1100 the_ins.opcode[0] = getone (opcode);
1101 the_ins.opcode[1] = gettwo (opcode);
1105 for (opP = &the_ins.operands[0]; *p; opP++)
1107 p = crack_operand (p, opP);
1111 the_ins.error = opP->error;
1116 opsfound = opP - &the_ins.operands[0];
1118 /* This ugly hack is to support the floating pt opcodes in their
1119 standard form. Essentially, we fake a first enty of type COP#1 */
1120 if (opcode->m_operands[0] == 'I')
1124 for (n = opsfound; n > 0; --n)
1125 the_ins.operands[n] = the_ins.operands[n - 1];
1127 memset ((char *) (&the_ins.operands[0]), '\0',
1128 sizeof (the_ins.operands[0]));
1129 the_ins.operands[0].mode = CONTROL;
1130 the_ins.operands[0].reg = m68k_float_copnum;
1134 /* We've got the operands. Find an opcode that'll accept them */
1137 /* If we didn't get the right number of ops, or we have no
1138 common model with this pattern then reject this pattern. */
1140 ok_arch |= opcode->m_arch;
1141 if (opsfound != opcode->m_opnum
1142 || ((opcode->m_arch & current_architecture) == 0))
1146 for (s = opcode->m_operands, opP = &the_ins.operands[0];
1150 /* Warning: this switch is huge! */
1151 /* I've tried to organize the cases into this order:
1152 non-alpha first, then alpha by letter. Lower-case
1153 goes directly before uppercase counterpart. */
1154 /* Code with multiple case ...: gets sorted by the lowest
1155 case ... it belongs to. I hope this makes sense. */
1261 if (opP->reg == PC || opP->reg == ZPC)
1278 if (opP->reg == PC || opP->reg == ZPC)
1297 if (opP->reg == PC || opP->reg == ZPC)
1307 if (opP->mode != IMMED)
1309 else if (s[1] == 'b'
1310 && ! isvar (&opP->disp)
1311 && (opP->disp.exp.X_op != O_constant
1312 || ! isbyte (opP->disp.exp.X_add_number)))
1314 else if (s[1] == 'B'
1315 && ! isvar (&opP->disp)
1316 && (opP->disp.exp.X_op != O_constant
1317 || ! issbyte (opP->disp.exp.X_add_number)))
1319 else if (s[1] == 'w'
1320 && ! isvar (&opP->disp)
1321 && (opP->disp.exp.X_op != O_constant
1322 || ! isword (opP->disp.exp.X_add_number)))
1324 else if (s[1] == 'W'
1325 && ! isvar (&opP->disp)
1326 && (opP->disp.exp.X_op != O_constant
1327 || ! issword (opP->disp.exp.X_add_number)))
1333 if (opP->mode != IMMED)
1338 if (opP->mode == AREG
1339 || opP->mode == CONTROL
1340 || opP->mode == FPREG
1341 || opP->mode == IMMED
1342 || opP->mode == REGLST
1343 || (opP->mode != ABSL
1345 || opP->reg == ZPC)))
1350 if (opP->mode == CONTROL
1351 || opP->mode == FPREG
1352 || opP->mode == REGLST
1353 || opP->mode == IMMED
1354 || (opP->mode != ABSL
1356 || opP->reg == ZPC)))
1384 if (opP->mode == CONTROL
1385 || opP->mode == FPREG
1386 || opP->mode == REGLST)
1391 if (opP->mode != AINC)
1396 if (opP->mode != ADEC)
1446 if (opP->reg == PC || opP->reg == ZPC)
1467 case '~': /* For now! (JF FOO is this right?) */
1489 if (opP->mode != CONTROL
1490 || (opP->reg != TT0 && opP->reg != TT1))
1495 if (opP->mode != AREG)
1500 if (opP->mode != AINDR)
1505 if (opP->mode != ABSL
1507 && strncmp (instring, "jbsr", 4) == 0))
1512 if (opP->mode != CONTROL || opP->reg != CCR)
1517 if (opP->mode != DISP
1519 || opP->reg > ADDR7)
1524 if (opP->mode != DREG)
1529 if (opP->reg != ACC)
1534 if (opP->mode != FPREG)
1539 if (opP->reg != MACSR)
1544 if (opP->reg != MASK)
1549 if (opP->mode != CONTROL
1556 if (opP->mode != CONTROL
1558 || opP->reg > last_movec_reg)
1562 const enum m68k_register *rp;
1563 for (rp = control_regs; *rp; rp++)
1564 if (*rp == opP->reg)
1572 if (opP->mode != IMMED)
1578 if (opP->mode == DREG
1579 || opP->mode == AREG
1580 || opP->mode == FPREG)
1589 opP->mask = 1 << (opP->reg - DATA0);
1592 opP->mask = 1 << (opP->reg - ADDR0 + 8);
1595 opP->mask = 1 << (opP->reg - FP0 + 16);
1603 else if (opP->mode == CONTROL)
1612 opP->mask = 1 << 24;
1615 opP->mask = 1 << 25;
1618 opP->mask = 1 << 26;
1627 else if (opP->mode != REGLST)
1629 else if (s[1] == '8' && (opP->mask & 0x0ffffff) != 0)
1631 else if (s[1] == '3' && (opP->mask & 0x7000000) != 0)
1636 if (opP->mode != IMMED)
1638 else if (opP->disp.exp.X_op != O_constant
1639 || ! issbyte (opP->disp.exp.X_add_number))
1641 else if (! m68k_quick
1642 && instring[3] != 'q'
1643 && instring[4] != 'q')
1648 if (opP->mode != DREG
1649 && opP->mode != IMMED
1650 && opP->mode != ABSL)
1655 if (opP->mode != IMMED)
1657 else if (opP->disp.exp.X_op != O_constant
1658 || opP->disp.exp.X_add_number < 1
1659 || opP->disp.exp.X_add_number > 8)
1661 else if (! m68k_quick
1662 && (strncmp (instring, "add", 3) == 0
1663 || strncmp (instring, "sub", 3) == 0)
1664 && instring[3] != 'q')
1669 if (opP->mode != DREG && opP->mode != AREG)
1674 if (opP->mode != AINDR
1675 && (opP->mode != BASE
1677 && opP->reg != ZADDR0)
1678 || opP->disp.exp.X_op != O_absent
1679 || ((opP->index.reg < DATA0
1680 || opP->index.reg > DATA7)
1681 && (opP->index.reg < ADDR0
1682 || opP->index.reg > ADDR7))
1683 || opP->index.size != SIZE_UNSPEC
1684 || opP->index.scale != 1))
1689 if (opP->mode != CONTROL
1690 || ! (opP->reg == FPI
1692 || opP->reg == FPC))
1697 if (opP->mode != CONTROL || opP->reg != SR)
1702 if (opP->mode != IMMED)
1704 else if (opP->disp.exp.X_op != O_constant
1705 || opP->disp.exp.X_add_number < 0
1706 || opP->disp.exp.X_add_number > 7)
1711 if (opP->mode != CONTROL || opP->reg != USP)
1715 /* JF these are out of order. We could put them
1716 in order if we were willing to put up with
1717 bunches of #ifdef m68851s in the code.
1719 Don't forget that you need these operands
1720 to use 68030 MMU instructions. */
1722 /* Memory addressing mode used by pflushr */
1724 if (opP->mode == CONTROL
1725 || opP->mode == FPREG
1726 || opP->mode == DREG
1727 || opP->mode == AREG
1728 || opP->mode == REGLST)
1730 /* We should accept immediate operands, but they
1731 supposedly have to be quad word, and we don't
1732 handle that. I would like to see what a Motorola
1733 assembler does before doing something here. */
1734 if (opP->mode == IMMED)
1739 if (opP->mode != CONTROL
1740 || (opP->reg != SFC && opP->reg != DFC))
1745 if (opP->mode != CONTROL || opP->reg != TC)
1750 if (opP->mode != CONTROL || opP->reg != AC)
1755 if (opP->mode != CONTROL
1758 && opP->reg != SCC))
1763 if (opP->mode != CONTROL
1769 if (opP->mode != CONTROL
1772 && opP->reg != CRP))
1777 if (opP->mode != CONTROL
1778 || (!(opP->reg >= BAD && opP->reg <= BAD + 7)
1779 && !(opP->reg >= BAC && opP->reg <= BAC + 7)))
1784 if (opP->mode != CONTROL || opP->reg != PSR)
1789 if (opP->mode != CONTROL || opP->reg != PCSR)
1794 if (opP->mode != CONTROL
1801 } /* not a cache specifier. */
1805 if (opP->mode != ABSL)
1810 if (opP->reg < DATA0L || opP->reg > ADDR7U)
1812 /* FIXME: kludge instead of fixing parser:
1813 upper/lower registers are *not* CONTROL
1814 registers, but ordinary ones. */
1815 if ((opP->reg >= DATA0L && opP->reg <= DATA7L)
1816 || (opP->reg >= DATA0U && opP->reg <= DATA7U))
1824 } /* switch on type of operand */
1828 } /* for each operand */
1829 } /* if immediately wrong */
1836 opcode = opcode->m_next;
1841 && !(ok_arch & current_architecture))
1846 _("invalid instruction for this architecture; needs "));
1847 cp = buf + strlen (buf);
1851 strcpy (cp, _("fpu (68040, 68060 or 68881/68882)"));
1854 strcpy (cp, _("mmu (68030 or 68851)"));
1857 strcpy (cp, _("68020 or higher"));
1860 strcpy (cp, _("68000 or higher"));
1863 strcpy (cp, _("68010 or higher"));
1867 int got_one = 0, idx;
1869 idx < (int) (sizeof (archs) / sizeof (archs[0]));
1872 if ((archs[idx].arch & ok_arch)
1873 && ! archs[idx].alias)
1877 strcpy (cp, " or ");
1881 strcpy (cp, archs[idx].name);
1887 cp = xmalloc (strlen (buf) + 1);
1892 the_ins.error = _("operands mismatch");
1894 } /* Fell off the end */
1899 /* now assemble it */
1901 the_ins.args = opcode->m_operands;
1902 the_ins.numargs = opcode->m_opnum;
1903 the_ins.numo = opcode->m_codenum;
1904 the_ins.opcode[0] = getone (opcode);
1905 the_ins.opcode[1] = gettwo (opcode);
1907 for (s = the_ins.args, opP = &the_ins.operands[0]; *s; s += 2, opP++)
1909 /* This switch is a doozy.
1910 Watch the first step; its a big one! */
1938 tmpreg = 0x3c; /* 7.4 */
1939 if (strchr ("bwl", s[1]))
1940 nextword = get_num (&opP->disp, 80);
1942 nextword = get_num (&opP->disp, 0);
1943 if (isvar (&opP->disp))
1944 add_fix (s[1], &opP->disp, 0, 0);
1948 if (!isbyte (nextword))
1949 opP->error = _("operand out of range");
1954 if (!isword (nextword))
1955 opP->error = _("operand out of range");
1960 if (!issword (nextword))
1961 opP->error = _("operand out of range");
1966 addword (nextword >> 16);
1993 /* We gotta put out some float */
1994 if (op (&opP->disp) != O_big)
1999 /* Can other cases happen here? */
2000 if (op (&opP->disp) != O_constant)
2003 val = (valueT) offs (&opP->disp);
2007 generic_bignum[gencnt] = (LITTLENUM_TYPE) val;
2008 val >>= LITTLENUM_NUMBER_OF_BITS;
2012 offs (&opP->disp) = gencnt;
2014 if (offs (&opP->disp) > 0)
2016 if (offs (&opP->disp) > baseo)
2018 as_warn (_("Bignum too big for %c format; truncated"),
2020 offs (&opP->disp) = baseo;
2022 baseo -= offs (&opP->disp);
2025 for (wordp = generic_bignum + offs (&opP->disp) - 1;
2026 offs (&opP->disp)--;
2031 gen_to_words (words, baseo, (long) outro);
2032 for (wordp = words; baseo--; wordp++)
2036 tmpreg = opP->reg - DATA; /* 0.dreg */
2039 tmpreg = 0x08 + opP->reg - ADDR; /* 1.areg */
2042 tmpreg = 0x10 + opP->reg - ADDR; /* 2.areg */
2045 tmpreg = 0x20 + opP->reg - ADDR; /* 4.areg */
2048 tmpreg = 0x18 + opP->reg - ADDR; /* 3.areg */
2052 nextword = get_num (&opP->disp, 80);
2055 && ! isvar (&opP->disp)
2058 opP->disp.exp.X_op = O_symbol;
2059 #ifndef BFD_ASSEMBLER
2060 opP->disp.exp.X_add_symbol = &abs_symbol;
2062 opP->disp.exp.X_add_symbol =
2063 section_symbol (absolute_section);
2067 /* Force into index mode. Hope this works */
2069 /* We do the first bit for 32-bit displacements, and the
2070 second bit for 16 bit ones. It is possible that we
2071 should make the default be WORD instead of LONG, but
2072 I think that'd break GCC, so we put up with a little
2073 inefficiency for the sake of working output. */
2075 if (!issword (nextword)
2076 || (isvar (&opP->disp)
2077 && ((opP->disp.size == SIZE_UNSPEC
2078 && flag_short_refs == 0
2079 && cpu_of_arch (current_architecture) >= m68020
2080 && ! arch_coldfire_p (current_architecture))
2081 || opP->disp.size == SIZE_LONG)))
2083 if (cpu_of_arch (current_architecture) < m68020
2084 || arch_coldfire_p (current_architecture))
2086 _("displacement too large for this architecture; needs 68020 or higher");
2088 tmpreg = 0x3B; /* 7.3 */
2090 tmpreg = 0x30 + opP->reg - ADDR; /* 6.areg */
2091 if (isvar (&opP->disp))
2095 if (opP->disp.size == SIZE_LONG
2097 /* If the displacement needs pic
2098 relocation it cannot be relaxed. */
2099 || opP->disp.pic_reloc != pic_none
2104 add_fix ('l', &opP->disp, 1, 2);
2108 add_frag (adds (&opP->disp),
2110 TAB (PCREL1632, SZ_UNDEF));
2117 add_fix ('l', &opP->disp, 0, 0);
2122 addword (nextword >> 16);
2127 tmpreg = 0x3A; /* 7.2 */
2129 tmpreg = 0x28 + opP->reg - ADDR; /* 5.areg */
2131 if (isvar (&opP->disp))
2135 add_fix ('w', &opP->disp, 1, 0);
2138 add_fix ('w', &opP->disp, 0, 0);
2148 baseo = get_num (&opP->disp, 80);
2149 if (opP->mode == POST || opP->mode == PRE)
2150 outro = get_num (&opP->odisp, 80);
2151 /* Figure out the `addressing mode'.
2152 Also turn on the BASE_DISABLE bit, if needed. */
2153 if (opP->reg == PC || opP->reg == ZPC)
2155 tmpreg = 0x3b; /* 7.3 */
2156 if (opP->reg == ZPC)
2159 else if (opP->reg == 0)
2162 tmpreg = 0x30; /* 6.garbage */
2164 else if (opP->reg >= ZADDR0 && opP->reg <= ZADDR7)
2167 tmpreg = 0x30 + opP->reg - ZADDR0;
2170 tmpreg = 0x30 + opP->reg - ADDR; /* 6.areg */
2172 siz1 = opP->disp.size;
2173 if (opP->mode == POST || opP->mode == PRE)
2174 siz2 = opP->odisp.size;
2178 /* Index register stuff */
2179 if (opP->index.reg != 0
2180 && opP->index.reg >= DATA
2181 && opP->index.reg <= ADDR7)
2183 nextword |= (opP->index.reg - DATA) << 12;
2185 if (opP->index.size == SIZE_LONG
2186 || (opP->index.size == SIZE_UNSPEC
2187 && m68k_index_width_default == SIZE_LONG))
2190 if ((opP->index.scale != 1
2191 && cpu_of_arch (current_architecture) < m68020)
2192 || (opP->index.scale == 8
2193 && arch_coldfire_p (current_architecture)))
2196 _("scale factor invalid on this architecture; needs cpu32 or 68020 or higher");
2199 if (arch_coldfire_p (current_architecture)
2200 && opP->index.size == SIZE_WORD)
2201 opP->error = _("invalid index size for coldfire");
2203 switch (opP->index.scale)
2220 GET US OUT OF HERE! */
2222 /* Must be INDEX, with an index register. Address
2223 register cannot be ZERO-PC, and either :b was
2224 forced, or we know it will fit. For a 68000 or
2225 68010, force this mode anyways, because the
2226 larger modes aren't supported. */
2227 if (opP->mode == BASE
2228 && ((opP->reg >= ADDR0
2229 && opP->reg <= ADDR7)
2232 if (siz1 == SIZE_BYTE
2233 || cpu_of_arch (current_architecture) < m68020
2234 || arch_coldfire_p (current_architecture)
2235 || (siz1 == SIZE_UNSPEC
2236 && ! isvar (&opP->disp)
2237 && issbyte (baseo)))
2239 nextword += baseo & 0xff;
2241 if (isvar (&opP->disp))
2243 /* Do a byte relocation. If it doesn't
2244 fit (possible on m68000) let the
2245 fixup processing complain later. */
2247 add_fix ('B', &opP->disp, 1, 1);
2249 add_fix ('B', &opP->disp, 0, 0);
2251 else if (siz1 != SIZE_BYTE)
2253 if (siz1 != SIZE_UNSPEC)
2254 as_warn (_("Forcing byte displacement"));
2255 if (! issbyte (baseo))
2256 opP->error = _("byte displacement out of range");
2261 else if (siz1 == SIZE_UNSPEC
2263 && isvar (&opP->disp)
2264 && subs (&opP->disp) == NULL
2266 /* If the displacement needs pic
2267 relocation it cannot be relaxed. */
2268 && opP->disp.pic_reloc == pic_none
2272 /* The code in md_convert_frag_1 needs to be
2273 able to adjust nextword. Call frag_grow
2274 to ensure that we have enough space in
2275 the frag obstack to make all the bytes
2278 nextword += baseo & 0xff;
2280 add_frag (adds (&opP->disp), offs (&opP->disp),
2281 TAB (PCINDEX, SZ_UNDEF));
2289 nextword |= 0x40; /* No index reg */
2290 if (opP->index.reg >= ZDATA0
2291 && opP->index.reg <= ZDATA7)
2292 nextword |= (opP->index.reg - ZDATA0) << 12;
2293 else if (opP->index.reg >= ZADDR0
2294 || opP->index.reg <= ZADDR7)
2295 nextword |= (opP->index.reg - ZADDR0 + 8) << 12;
2298 /* It isn't simple. */
2300 if (cpu_of_arch (current_architecture) < m68020
2301 || arch_coldfire_p (current_architecture))
2303 _("invalid operand mode for this architecture; needs 68020 or higher");
2306 /* If the guy specified a width, we assume that it is
2307 wide enough. Maybe it isn't. If so, we lose. */
2311 if (isvar (&opP->disp)
2313 : ! issword (baseo))
2318 else if (! isvar (&opP->disp) && baseo == 0)
2327 as_warn (_(":b not permitted; defaulting to :w"));
2337 /* Figure out innner displacement stuff */
2338 if (opP->mode == POST || opP->mode == PRE)
2340 if (cpu_of_arch (current_architecture) & cpu32)
2341 opP->error = _("invalid operand mode for this architecture; needs 68020 or higher");
2345 if (isvar (&opP->odisp)
2347 : ! issword (outro))
2352 else if (! isvar (&opP->odisp) && outro == 0)
2361 as_warn (_(":b not permitted; defaulting to :w"));
2370 if (opP->mode == POST
2371 && (nextword & 0x40) == 0)
2376 if (siz1 != SIZE_UNSPEC && isvar (&opP->disp))
2378 if (opP->reg == PC || opP->reg == ZPC)
2379 add_fix (siz1 == SIZE_LONG ? 'l' : 'w', &opP->disp, 1, 2);
2381 add_fix (siz1 == SIZE_LONG ? 'l' : 'w', &opP->disp, 0, 0);
2383 if (siz1 == SIZE_LONG)
2384 addword (baseo >> 16);
2385 if (siz1 != SIZE_UNSPEC)
2388 if (siz2 != SIZE_UNSPEC && isvar (&opP->odisp))
2389 add_fix (siz2 == SIZE_LONG ? 'l' : 'w', &opP->odisp, 0, 0);
2390 if (siz2 == SIZE_LONG)
2391 addword (outro >> 16);
2392 if (siz2 != SIZE_UNSPEC)
2398 nextword = get_num (&opP->disp, 80);
2399 switch (opP->disp.size)
2404 if (!isvar (&opP->disp) && issword (offs (&opP->disp)))
2406 tmpreg = 0x38; /* 7.0 */
2410 if (isvar (&opP->disp)
2411 && !subs (&opP->disp)
2412 && adds (&opP->disp)
2414 /* If the displacement needs pic relocation it
2415 cannot be relaxed. */
2416 && opP->disp.pic_reloc == pic_none
2419 && !strchr ("~%&$?", s[0]))
2421 tmpreg = 0x3A; /* 7.2 */
2422 add_frag (adds (&opP->disp),
2424 TAB (ABSTOPCREL, SZ_UNDEF));
2427 /* Fall through into long */
2429 if (isvar (&opP->disp))
2430 add_fix ('l', &opP->disp, 0, 0);
2432 tmpreg = 0x39;/* 7.1 mode */
2433 addword (nextword >> 16);
2438 as_bad (_("unsupported byte value; use a different suffix"));
2440 case SIZE_WORD: /* Word */
2441 if (isvar (&opP->disp))
2442 add_fix ('w', &opP->disp, 0, 0);
2444 tmpreg = 0x38;/* 7.0 mode */
2452 as_bad (_("unknown/incorrect operand"));
2455 install_gen_operand (s[1], tmpreg);
2461 { /* JF: I hate floating point! */
2476 tmpreg = get_num (&opP->disp, tmpreg);
2477 if (isvar (&opP->disp))
2478 add_fix (s[1], &opP->disp, 0, 0);
2481 case 'b': /* Danger: These do no check for
2482 certain types of overflow.
2484 if (!isbyte (tmpreg))
2485 opP->error = _("out of range");
2486 insop (tmpreg, opcode);
2487 if (isvar (&opP->disp))
2488 the_ins.reloc[the_ins.nrel - 1].n =
2489 (opcode->m_codenum) * 2 + 1;
2492 if (!issbyte (tmpreg))
2493 opP->error = _("out of range");
2494 the_ins.opcode[the_ins.numo - 1] |= tmpreg & 0xff;
2495 if (isvar (&opP->disp))
2496 the_ins.reloc[the_ins.nrel - 1].n = opcode->m_codenum * 2 - 1;
2499 if (!isword (tmpreg))
2500 opP->error = _("out of range");
2501 insop (tmpreg, opcode);
2502 if (isvar (&opP->disp))
2503 the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
2506 if (!issword (tmpreg))
2507 opP->error = _("out of range");
2508 insop (tmpreg, opcode);
2509 if (isvar (&opP->disp))
2510 the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
2513 /* Because of the way insop works, we put these two out
2515 insop (tmpreg, opcode);
2516 insop (tmpreg >> 16, opcode);
2517 if (isvar (&opP->disp))
2518 the_ins.reloc[the_ins.nrel - 1].n = (opcode->m_codenum) * 2;
2525 install_operand (s[1], tmpreg);
2536 install_operand (s[1], opP->reg - ADDR);
2540 tmpreg = get_num (&opP->disp, 80);
2544 add_fix ('B', &opP->disp, 1, -1);
2547 add_fix ('w', &opP->disp, 1, 0);
2552 if (! HAVE_LONG_BRANCH (current_architecture))
2553 as_warn (_("Can't use long branches on 68000/68010/5200"));
2554 the_ins.opcode[0] |= 0xff;
2555 add_fix ('l', &opP->disp, 1, 0);
2560 if (subs (&opP->disp)) /* We can't relax it */
2564 /* If the displacement needs pic relocation it cannot be
2566 if (opP->disp.pic_reloc != pic_none)
2569 /* This could either be a symbol, or an absolute
2570 address. If it's an absolute address, turn it into
2571 an absolute jump right here and keep it out of the
2573 if (adds (&opP->disp) == 0)
2575 if (the_ins.opcode[0] == 0x6000) /* jbra */
2576 the_ins.opcode[0] = 0x4EF9;
2577 else if (the_ins.opcode[0] == 0x6100) /* jbsr */
2578 the_ins.opcode[0] = 0x4EB9;
2581 the_ins.opcode[0] ^= 0x0100;
2582 the_ins.opcode[0] |= 0x0006;
2585 add_fix ('l', &opP->disp, 0, 0);
2591 /* Now we know it's going into the relaxer. Now figure
2592 out which mode. We try in this order of preference:
2593 long branch, absolute jump, byte/word branches only. */
2594 if (HAVE_LONG_BRANCH (current_architecture))
2595 add_frag (adds (&opP->disp), offs (&opP->disp),
2596 TAB (BRANCHBWL, SZ_UNDEF));
2597 else if (! flag_keep_pcrel)
2599 if ((the_ins.opcode[0] == 0x6000)
2600 || (the_ins.opcode[0] == 0x6100))
2601 add_frag (adds (&opP->disp), offs (&opP->disp),
2602 TAB (BRABSJUNC, SZ_UNDEF));
2604 add_frag (adds (&opP->disp), offs (&opP->disp),
2605 TAB (BRABSJCOND, SZ_UNDEF));
2608 add_frag (adds (&opP->disp), offs (&opP->disp),
2609 TAB (BRANCHBW, SZ_UNDEF));
2612 if (isvar (&opP->disp))
2614 /* Check for DBcc instructions. We can relax them,
2615 but only if we have long branches and/or absolute
2617 if (((the_ins.opcode[0] & 0xf0f8) == 0x50c8)
2618 && (HAVE_LONG_BRANCH (current_architecture)
2619 || (! flag_keep_pcrel)))
2621 if (HAVE_LONG_BRANCH (current_architecture))
2622 add_frag (adds (&opP->disp), offs (&opP->disp),
2623 TAB (DBCCLBR, SZ_UNDEF));
2625 add_frag (adds (&opP->disp), offs (&opP->disp),
2626 TAB (DBCCABSJ, SZ_UNDEF));
2629 add_fix ('w', &opP->disp, 1, 0);
2633 case 'C': /* Fixed size LONG coproc branches */
2634 add_fix ('l', &opP->disp, 1, 0);
2638 case 'c': /* Var size Coprocesssor branches */
2639 if (subs (&opP->disp) || (adds (&opP->disp) == 0))
2641 the_ins.opcode[the_ins.numo - 1] |= 0x40;
2642 add_fix ('l', &opP->disp, 1, 0);
2647 add_frag (adds (&opP->disp), offs (&opP->disp),
2648 TAB (FBRANCH, SZ_UNDEF));
2655 case 'C': /* Ignore it */
2658 case 'd': /* JF this is a kludge */
2659 install_operand ('s', opP->reg - ADDR);
2660 tmpreg = get_num (&opP->disp, 80);
2661 if (!issword (tmpreg))
2663 as_warn (_("Expression out of range, using 0"));
2670 install_operand (s[1], opP->reg - DATA);
2673 case 'E': /* Ignore it */
2677 install_operand (s[1], opP->reg - FP0);
2680 case 'G': /* Ignore it */
2685 tmpreg = opP->reg - COP0;
2686 install_operand (s[1], tmpreg);
2689 case 'J': /* JF foo */
2762 install_operand (s[1], tmpreg);
2766 tmpreg = get_num (&opP->disp, 55);
2767 install_operand (s[1], tmpreg & 0x7f);
2774 if (tmpreg & 0x7FF0000)
2775 as_bad (_("Floating point register in register list"));
2776 insop (reverse_16_bits (tmpreg), opcode);
2780 if (tmpreg & 0x700FFFF)
2781 as_bad (_("Wrong register in floating-point reglist"));
2782 install_operand (s[1], reverse_8_bits (tmpreg >> 16));
2790 if (tmpreg & 0x7FF0000)
2791 as_bad (_("Floating point register in register list"));
2792 insop (tmpreg, opcode);
2794 else if (s[1] == '8')
2796 if (tmpreg & 0x0FFFFFF)
2797 as_bad (_("incorrect register in reglist"));
2798 install_operand (s[1], tmpreg >> 24);
2802 if (tmpreg & 0x700FFFF)
2803 as_bad (_("wrong register in floating-point reglist"));
2805 install_operand (s[1], tmpreg >> 16);
2810 install_operand (s[1], get_num (&opP->disp, 60));
2814 tmpreg = ((opP->mode == DREG)
2815 ? 0x20 + (int) (opP->reg - DATA)
2816 : (get_num (&opP->disp, 40) & 0x1F));
2817 install_operand (s[1], tmpreg);
2821 tmpreg = get_num (&opP->disp, 10);
2824 install_operand (s[1], tmpreg);
2828 /* This depends on the fact that ADDR registers are eight
2829 more than their corresponding DATA regs, so the result
2830 will have the ADDR_REG bit set */
2831 install_operand (s[1], opP->reg - DATA);
2835 if (opP->mode == AINDR)
2836 install_operand (s[1], opP->reg - DATA);
2838 install_operand (s[1], opP->index.reg - DATA);
2842 if (opP->reg == FPI)
2844 else if (opP->reg == FPS)
2846 else if (opP->reg == FPC)
2850 install_operand (s[1], tmpreg);
2853 case 'S': /* Ignore it */
2857 install_operand (s[1], get_num (&opP->disp, 30));
2860 case 'U': /* Ignore it */
2879 as_fatal (_("failed sanity check"));
2880 } /* switch on cache token */
2881 install_operand (s[1], tmpreg);
2884 /* JF: These are out of order, I fear. */
2897 install_operand (s[1], tmpreg);
2923 install_operand (s[1], tmpreg);
2927 if (opP->reg == VAL)
2946 install_operand (s[1], tmpreg);
2960 tmpreg = (4 << 10) | ((opP->reg - BAD) << 2);
2971 tmpreg = (5 << 10) | ((opP->reg - BAC) << 2);
2977 install_operand (s[1], tmpreg);
2980 know (opP->reg == PSR);
2983 know (opP->reg == PCSR);
2998 install_operand (s[1], tmpreg);
3001 tmpreg = get_num (&opP->disp, 20);
3002 install_operand (s[1], tmpreg);
3004 case '_': /* used only for move16 absolute 32-bit address */
3005 if (isvar (&opP->disp))
3006 add_fix ('l', &opP->disp, 0, 0);
3007 tmpreg = get_num (&opP->disp, 80);
3008 addword (tmpreg >> 16);
3009 addword (tmpreg & 0xFFFF);
3012 install_operand (s[1], opP->reg - DATA0L);
3013 opP->reg -= (DATA0L);
3014 opP->reg &= 0x0F; /* remove upper/lower bit */
3021 /* By the time whe get here (FINALLY) the_ins contains the complete
3022 instruction, ready to be emitted. . . */
3026 reverse_16_bits (in)
3032 static int mask[16] =
3034 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
3035 0x0100, 0x0200, 0x0400, 0x0800, 0x1000, 0x2000, 0x4000, 0x8000
3037 for (n = 0; n < 16; n++)
3040 out |= mask[15 - n];
3043 } /* reverse_16_bits() */
3052 static int mask[8] =
3054 0x0001, 0x0002, 0x0004, 0x0008, 0x0010, 0x0020, 0x0040, 0x0080,
3057 for (n = 0; n < 8; n++)
3063 } /* reverse_8_bits() */
3065 /* Cause an extra frag to be generated here, inserting up to 10 bytes
3066 (that value is chosen in the frag_var call in md_assemble). TYPE
3067 is the subtype of the frag to be generated; its primary type is
3068 rs_machine_dependent.
3070 The TYPE parameter is also used by md_convert_frag_1 and
3071 md_estimate_size_before_relax. The appropriate type of fixup will
3072 be emitted by md_convert_frag_1.
3074 ADD becomes the FR_SYMBOL field of the frag, and OFF the FR_OFFSET. */
3076 install_operand (mode, val)
3083 the_ins.opcode[0] |= val & 0xFF; /* JF FF is for M kludge */
3086 the_ins.opcode[0] |= val << 9;
3089 the_ins.opcode[1] |= val << 12;
3092 the_ins.opcode[1] |= val << 6;
3095 the_ins.opcode[1] |= val;
3098 the_ins.opcode[2] |= val << 12;
3101 the_ins.opcode[2] |= val << 6;
3104 /* DANGER! This is a hack to force cas2l and cas2w cmds to be
3105 three words long! */
3107 the_ins.opcode[2] |= val;
3110 the_ins.opcode[1] |= val << 7;
3113 the_ins.opcode[1] |= val << 10;
3117 the_ins.opcode[1] |= val << 5;
3122 the_ins.opcode[1] |= (val << 10) | (val << 7);
3125 the_ins.opcode[1] |= (val << 12) | val;
3128 the_ins.opcode[0] |= val = 0xff;
3131 the_ins.opcode[0] |= val << 9;
3134 the_ins.opcode[1] |= val;
3137 the_ins.opcode[1] |= val;
3138 the_ins.numo++; /* What a hack */
3141 the_ins.opcode[1] |= val << 4;
3149 the_ins.opcode[0] |= (val << 6);
3152 the_ins.opcode[1] = (val >> 16);
3153 the_ins.opcode[2] = val & 0xffff;
3156 the_ins.opcode[0] |= ((val & 0x8) << (6 - 3));
3157 the_ins.opcode[0] |= ((val & 0x7) << 9);
3158 the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
3161 the_ins.opcode[0] |= ((val & 0x8) << (6 - 3));
3162 the_ins.opcode[0] |= ((val & 0x7) << 9);
3165 the_ins.opcode[1] |= val << 12;
3166 the_ins.opcode[1] |= ((val & 0x10) << (7 - 4));
3169 the_ins.opcode[0] |= (val & 0xF);
3170 the_ins.opcode[1] |= ((val & 0x10) << (6 - 4));
3173 the_ins.opcode[1] |= (val & 0xF);
3174 the_ins.opcode[1] |= ((val & 0x10) << (6 - 4));
3177 the_ins.opcode[1] |= ((val != 1) << 10);
3181 as_fatal (_("failed sanity check."));
3183 } /* install_operand() */
3186 install_gen_operand (mode, val)
3193 the_ins.opcode[0] |= val;
3196 /* This is a kludge!!! */
3197 the_ins.opcode[0] |= (val & 0x07) << 9 | (val & 0x38) << 3;
3206 the_ins.opcode[0] |= val;
3208 /* more stuff goes here */
3210 as_fatal (_("failed sanity check."));
3212 } /* install_gen_operand() */
3215 * verify that we have some number of paren pairs, do m68k_ip_op(), and
3216 * then deal with the bitfield hack.
3220 crack_operand (str, opP)
3222 register struct m68k_op *opP;
3224 register int parens;
3226 register char *beg_str;
3234 for (parens = 0; *str && (parens > 0 || inquote || notend (str)); str++)
3240 else if (*str == ')')
3244 opP->error = _("Extra )");
3250 if (flag_mri && *str == '\'')
3251 inquote = ! inquote;
3253 if (!*str && parens)
3255 opP->error = _("Missing )");
3260 if (m68k_ip_op (beg_str, opP) != 0)
3267 c = *++str; /* JF bitfield hack */
3272 as_bad (_("Missing operand"));
3275 /* Detect MRI REG symbols and convert them to REGLSTs. */
3276 if (opP->mode == CONTROL && (int)opP->reg < 0)
3279 opP->mask = ~(int)opP->reg;
3286 /* This is the guts of the machine-dependent assembler. STR points to a
3287 machine dependent instruction. This function is supposed to emit
3288 the frags/bytes it assembles to.
3292 insert_reg (regname, regnum)
3293 const char *regname;
3299 #ifdef REGISTER_PREFIX
3300 if (!flag_reg_prefix_optional)
3302 buf[0] = REGISTER_PREFIX;
3303 strcpy (buf + 1, regname);
3308 symbol_table_insert (symbol_new (regname, reg_section, regnum,
3309 &zero_address_frag));
3311 for (i = 0; regname[i]; i++)
3312 buf[i] = TOUPPER (regname[i]);
3315 symbol_table_insert (symbol_new (buf, reg_section, regnum,
3316 &zero_address_frag));
3325 static const struct init_entry init_table[] =
3384 /* control registers */
3385 { "sfc", SFC }, /* Source Function Code */
3387 { "dfc", DFC }, /* Destination Function Code */
3389 { "cacr", CACR }, /* Cache Control Register */
3390 { "caar", CAAR }, /* Cache Address Register */
3392 { "usp", USP }, /* User Stack Pointer */
3393 { "vbr", VBR }, /* Vector Base Register */
3394 { "msp", MSP }, /* Master Stack Pointer */
3395 { "isp", ISP }, /* Interrupt Stack Pointer */
3397 { "itt0", ITT0 }, /* Instruction Transparent Translation Reg 0 */
3398 { "itt1", ITT1 }, /* Instruction Transparent Translation Reg 1 */
3399 { "dtt0", DTT0 }, /* Data Transparent Translation Register 0 */
3400 { "dtt1", DTT1 }, /* Data Transparent Translation Register 1 */
3402 /* 68ec040 versions of same */
3403 { "iacr0", ITT0 }, /* Instruction Access Control Register 0 */
3404 { "iacr1", ITT1 }, /* Instruction Access Control Register 0 */
3405 { "dacr0", DTT0 }, /* Data Access Control Register 0 */
3406 { "dacr1", DTT1 }, /* Data Access Control Register 0 */
3408 /* mcf5200 versions of same. The ColdFire programmer's reference
3409 manual indicated that the order is 2,3,0,1, but Ken Rose
3410 <rose@netcom.com> says that 0,1,2,3 is the correct order. */
3411 { "acr0", ITT0 }, /* Access Control Unit 0 */
3412 { "acr1", ITT1 }, /* Access Control Unit 1 */
3413 { "acr2", DTT0 }, /* Access Control Unit 2 */
3414 { "acr3", DTT1 }, /* Access Control Unit 3 */
3416 { "tc", TC }, /* MMU Translation Control Register */
3419 { "mmusr", MMUSR }, /* MMU Status Register */
3420 { "srp", SRP }, /* User Root Pointer */
3421 { "urp", URP }, /* Supervisor Root Pointer */
3426 { "rombar", ROMBAR }, /* ROM Base Address Register */
3427 { "rambar0", RAMBAR0 }, /* ROM Base Address Register */
3428 { "rambar1", RAMBAR1 }, /* ROM Base Address Register */
3429 { "mbar", MBAR }, /* Module Base Address Register */
3430 /* end of control registers */
3464 /* 68ec030 versions of same */
3467 /* 68ec030 access control unit, identical to 030 MMU status reg */
3470 /* Suppressed data and address registers. */
3488 /* Upper and lower data and address registers, used by macw and msacw. */
3532 for (i = 0; init_table[i].name; i++)
3533 insert_reg (init_table[i].name, init_table[i].number);
3536 static int no_68851, no_68881;
3539 /* a.out machine type. Default to 68020. */
3540 int m68k_aout_machtype = 2;
3552 int shorts_this_frag;
3555 /* In MRI mode, the instruction and operands are separated by a
3556 space. Anything following the operands is a comment. The label
3557 has already been removed. */
3565 for (s = str; *s != '\0'; s++)
3567 if ((*s == ' ' || *s == '\t') && ! inquote)
3585 inquote = ! inquote;
3590 memset ((char *) (&the_ins), '\0', sizeof (the_ins));
3595 for (n = 0; n < the_ins.numargs; n++)
3596 if (the_ins.operands[n].error)
3598 er = the_ins.operands[n].error;
3604 as_bad (_("%s -- statement `%s' ignored"), er, str);
3608 /* If there is a current label, record that it marks an instruction. */
3609 if (current_label != NULL)
3611 current_label->text = 1;
3612 current_label = NULL;
3616 /* Tie dwarf2 debug info to the address at the start of the insn. */
3617 dwarf2_emit_insn (0);
3620 if (the_ins.nfrag == 0)
3622 /* No frag hacking involved; just put it out */
3623 toP = frag_more (2 * the_ins.numo);
3624 fromP = &the_ins.opcode[0];
3625 for (m = the_ins.numo; m; --m)
3627 md_number_to_chars (toP, (long) (*fromP), 2);
3631 /* put out symbol-dependent info */
3632 for (m = 0; m < the_ins.nrel; m++)
3634 switch (the_ins.reloc[m].wid)
3653 as_fatal (_("Don't know how to figure width of %c in md_assemble()"),
3654 the_ins.reloc[m].wid);
3657 fixP = fix_new_exp (frag_now,
3658 ((toP - frag_now->fr_literal)
3659 - the_ins.numo * 2 + the_ins.reloc[m].n),
3661 &the_ins.reloc[m].exp,
3662 the_ins.reloc[m].pcrel,
3663 get_reloc_code (n, the_ins.reloc[m].pcrel,
3664 the_ins.reloc[m].pic_reloc));
3665 fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
3666 if (the_ins.reloc[m].wid == 'B')
3667 fixP->fx_signed = 1;
3672 /* There's some frag hacking */
3674 /* Calculate the max frag size. */
3677 wid = 2 * the_ins.fragb[0].fragoff;
3678 for (n = 1; n < the_ins.nfrag; n++)
3679 wid += 2 * (the_ins.numo - the_ins.fragb[n - 1].fragoff);
3680 /* frag_var part. */
3682 /* Make sure the whole insn fits in one chunk, in particular that
3683 the var part is attached, as we access one byte before the
3684 variable frag for byte branches. */
3688 for (n = 0, fromP = &the_ins.opcode[0]; n < the_ins.nfrag; n++)
3693 wid = 2 * the_ins.fragb[n].fragoff;
3695 wid = 2 * (the_ins.numo - the_ins.fragb[n - 1].fragoff);
3696 toP = frag_more (wid);
3698 shorts_this_frag = 0;
3699 for (m = wid / 2; m; --m)
3701 md_number_to_chars (toP, (long) (*fromP), 2);
3706 for (m = 0; m < the_ins.nrel; m++)
3708 if ((the_ins.reloc[m].n) >= 2 * shorts_this_frag)
3710 the_ins.reloc[m].n -= 2 * shorts_this_frag;
3713 wid = the_ins.reloc[m].wid;
3716 the_ins.reloc[m].wid = 0;
3717 wid = (wid == 'b') ? 1 : (wid == 'w') ? 2 : (wid == 'l') ? 4 : 4000;
3719 fixP = fix_new_exp (frag_now,
3720 ((toP - frag_now->fr_literal)
3721 - the_ins.numo * 2 + the_ins.reloc[m].n),
3723 &the_ins.reloc[m].exp,
3724 the_ins.reloc[m].pcrel,
3725 get_reloc_code (wid, the_ins.reloc[m].pcrel,
3726 the_ins.reloc[m].pic_reloc));
3727 fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
3729 (void) frag_var (rs_machine_dependent, 10, 0,
3730 (relax_substateT) (the_ins.fragb[n].fragty),
3731 the_ins.fragb[n].fadd, the_ins.fragb[n].foff, to_beg_P);
3733 n = (the_ins.numo - the_ins.fragb[n - 1].fragoff);
3734 shorts_this_frag = 0;
3737 toP = frag_more (n * sizeof (short));
3740 md_number_to_chars (toP, (long) (*fromP), 2);
3746 for (m = 0; m < the_ins.nrel; m++)
3750 wid = the_ins.reloc[m].wid;
3753 the_ins.reloc[m].wid = 0;
3754 wid = (wid == 'b') ? 1 : (wid == 'w') ? 2 : (wid == 'l') ? 4 : 4000;
3756 fixP = fix_new_exp (frag_now,
3757 ((the_ins.reloc[m].n + toP - frag_now->fr_literal)
3758 - shorts_this_frag * 2),
3760 &the_ins.reloc[m].exp,
3761 the_ins.reloc[m].pcrel,
3762 get_reloc_code (wid, the_ins.reloc[m].pcrel,
3763 the_ins.reloc[m].pic_reloc));
3764 fixP->fx_pcrel_adjust = the_ins.reloc[m].pcrel_fix;
3772 * md_begin -- set up hash tables with 68000 instructions.
3773 * similar to what the vax assembler does. ---phr
3775 /* RMS claims the thing to do is take the m68k-opcode.h table, and make
3776 a copy of it at runtime, adding in the information we want but isn't
3777 there. I think it'd be better to have an awk script hack the table
3778 at compile time. Or even just xstr the table and use it as-is. But
3779 my lord ghod hath spoken, so we do it this way. Excuse the ugly var
3782 const struct m68k_opcode *ins;
3783 struct m68k_incant *hack, *slak;
3784 const char *retval = 0; /* empty string, or error msg text */
3789 flag_reg_prefix_optional = 1;
3791 if (! m68k_rel32_from_cmdline)
3795 op_hash = hash_new ();
3797 obstack_begin (&robyn, 4000);
3798 for (i = 0; i < m68k_numopcodes; i++)
3800 hack = slak = (struct m68k_incant *) obstack_alloc (&robyn, sizeof (struct m68k_incant));
3803 ins = &m68k_opcodes[i];
3804 /* We *could* ignore insns that don't match our arch here
3805 but just leaving them out of the hash. */
3806 slak->m_operands = ins->args;
3807 slak->m_opnum = strlen (slak->m_operands) / 2;
3808 slak->m_arch = ins->arch;
3809 slak->m_opcode = ins->opcode;
3810 /* This is kludgey */
3811 slak->m_codenum = ((ins->match) & 0xffffL) ? 2 : 1;
3812 if (i + 1 != m68k_numopcodes
3813 && !strcmp (ins->name, m68k_opcodes[i + 1].name))
3815 slak->m_next = (struct m68k_incant *) obstack_alloc (&robyn, sizeof (struct m68k_incant));
3820 slak = slak->m_next;
3824 retval = hash_insert (op_hash, ins->name, (char *) hack);
3826 as_fatal (_("Internal Error: Can't hash %s: %s"), ins->name, retval);
3829 for (i = 0; i < m68k_numaliases; i++)
3831 const char *name = m68k_opcode_aliases[i].primary;
3832 const char *alias = m68k_opcode_aliases[i].alias;
3833 PTR val = hash_find (op_hash, name);
3835 as_fatal (_("Internal Error: Can't find %s in hash table"), name);
3836 retval = hash_insert (op_hash, alias, val);
3838 as_fatal (_("Internal Error: Can't hash %s: %s"), alias, retval);
3841 /* In MRI mode, all unsized branches are variable sized. Normally,
3842 they are word sized. */
3845 static struct m68k_opcode_alias mri_aliases[] =
3866 i < (int) (sizeof mri_aliases / sizeof mri_aliases[0]);
3869 const char *name = mri_aliases[i].primary;
3870 const char *alias = mri_aliases[i].alias;
3871 PTR val = hash_find (op_hash, name);
3873 as_fatal (_("Internal Error: Can't find %s in hash table"), name);
3874 retval = hash_jam (op_hash, alias, val);
3876 as_fatal (_("Internal Error: Can't hash %s: %s"), alias, retval);
3880 for (i = 0; i < (int) sizeof (notend_table); i++)
3882 notend_table[i] = 0;
3883 alt_notend_table[i] = 0;
3885 notend_table[','] = 1;
3886 notend_table['{'] = 1;
3887 notend_table['}'] = 1;
3888 alt_notend_table['a'] = 1;
3889 alt_notend_table['A'] = 1;
3890 alt_notend_table['d'] = 1;
3891 alt_notend_table['D'] = 1;
3892 alt_notend_table['#'] = 1;
3893 alt_notend_table['&'] = 1;
3894 alt_notend_table['f'] = 1;
3895 alt_notend_table['F'] = 1;
3896 #ifdef REGISTER_PREFIX
3897 alt_notend_table[REGISTER_PREFIX] = 1;
3900 /* We need to put '(' in alt_notend_table to handle
3901 cas2 %d0:%d2,%d3:%d4,(%a0):(%a1)
3903 alt_notend_table['('] = 1;
3905 /* We need to put '@' in alt_notend_table to handle
3906 cas2 %d0:%d2,%d3:%d4,@(%d0):@(%d1)
3908 alt_notend_table['@'] = 1;
3910 /* We need to put digits in alt_notend_table to handle
3911 bfextu %d0{24:1},%d0
3913 alt_notend_table['0'] = 1;
3914 alt_notend_table['1'] = 1;
3915 alt_notend_table['2'] = 1;
3916 alt_notend_table['3'] = 1;
3917 alt_notend_table['4'] = 1;
3918 alt_notend_table['5'] = 1;
3919 alt_notend_table['6'] = 1;
3920 alt_notend_table['7'] = 1;
3921 alt_notend_table['8'] = 1;
3922 alt_notend_table['9'] = 1;
3924 #ifndef MIT_SYNTAX_ONLY
3925 /* Insert pseudo ops, these have to go into the opcode table since
3926 gas expects pseudo ops to start with a dot */
3929 while (mote_pseudo_table[n].poc_name)
3931 hack = (struct m68k_incant *)
3932 obstack_alloc (&robyn, sizeof (struct m68k_incant));
3933 hash_insert (op_hash,
3934 mote_pseudo_table[n].poc_name, (char *) hack);
3935 hack->m_operands = 0;
3945 record_alignment (text_section, 2);
3946 record_alignment (data_section, 2);
3947 record_alignment (bss_section, 2);
3952 select_control_regs ()
3954 /* Note which set of "movec" control registers is available. */
3955 switch (cpu_of_arch (current_architecture))
3958 control_regs = m68000_control_regs;
3961 control_regs = m68010_control_regs;
3965 control_regs = m68020_control_regs;
3968 control_regs = m68040_control_regs;
3971 control_regs = m68060_control_regs;
3974 control_regs = cpu32_control_regs;
3980 control_regs = mcf_control_regs;
3988 m68k_init_after_args ()
3990 if (cpu_of_arch (current_architecture) == 0)
3993 const char *default_cpu = TARGET_CPU;
3995 if (*default_cpu == 'm')
3997 for (i = 0; i < n_archs; i++)
3998 if (strcasecmp (default_cpu, archs[i].name) == 0)
4002 as_bad (_("unrecognized default cpu `%s' ???"), TARGET_CPU);
4003 current_architecture |= m68020;
4006 current_architecture |= archs[i].arch;
4008 /* Permit m68881 specification with all cpus; those that can't work
4009 with a coprocessor could be doing emulation. */
4010 if (current_architecture & m68851)
4012 if (current_architecture & m68040)
4014 as_warn (_("68040 and 68851 specified; mmu instructions may assemble incorrectly"));
4017 /* What other incompatibilities could we check for? */
4019 /* Toss in some default assumptions about coprocessors. */
4021 && (cpu_of_arch (current_architecture)
4022 /* Can CPU32 have a 68881 coprocessor?? */
4023 & (m68020 | m68030 | cpu32)))
4025 current_architecture |= m68881;
4028 && (cpu_of_arch (current_architecture) & m68020up) != 0
4029 && (cpu_of_arch (current_architecture) & m68040up) == 0)
4031 current_architecture |= m68851;
4033 if (no_68881 && (current_architecture & m68881))
4034 as_bad (_("options for 68881 and no-68881 both given"));
4035 if (no_68851 && (current_architecture & m68851))
4036 as_bad (_("options for 68851 and no-68851 both given"));
4039 /* Work out the magic number. This isn't very general. */
4040 if (current_architecture & m68000)
4041 m68k_aout_machtype = 0;
4042 else if (current_architecture & m68010)
4043 m68k_aout_machtype = 1;
4044 else if (current_architecture & m68020)
4045 m68k_aout_machtype = 2;
4047 m68k_aout_machtype = 2;
4050 /* Note which set of "movec" control registers is available. */
4051 select_control_regs ();
4053 if (cpu_of_arch (current_architecture) < m68020
4054 || arch_coldfire_p (current_architecture))
4055 md_relax_table[TAB (PCINDEX, BYTE)].rlx_more = 0;
4058 /* This is called when a label is defined. */
4061 m68k_frob_label (sym)
4064 struct label_line *n;
4066 n = (struct label_line *) xmalloc (sizeof *n);
4069 as_where (&n->file, &n->line);
4075 /* This is called when a value that is not an instruction is emitted. */
4078 m68k_flush_pending_output ()
4080 current_label = NULL;
4083 /* This is called at the end of the assembly, when the final value of
4084 the label is known. We warn if this is a text symbol aligned at an
4088 m68k_frob_symbol (sym)
4091 if (S_GET_SEGMENT (sym) == reg_section
4092 && (int) S_GET_VALUE (sym) < 0)
4094 S_SET_SEGMENT (sym, absolute_section);
4095 S_SET_VALUE (sym, ~(int)S_GET_VALUE (sym));
4097 else if ((S_GET_VALUE (sym) & 1) != 0)
4099 struct label_line *l;
4101 for (l = labels; l != NULL; l = l->next)
4103 if (l->label == sym)
4106 as_warn_where (l->file, l->line,
4107 _("text label `%s' aligned to odd boundary"),
4115 /* This is called if we go in or out of MRI mode because of the .mri
4119 m68k_mri_mode_change (on)
4124 if (! flag_reg_prefix_optional)
4126 flag_reg_prefix_optional = 1;
4127 #ifdef REGISTER_PREFIX
4132 if (! m68k_rel32_from_cmdline)
4137 if (! reg_prefix_optional_seen)
4139 #ifdef REGISTER_PREFIX_OPTIONAL
4140 flag_reg_prefix_optional = REGISTER_PREFIX_OPTIONAL;
4142 flag_reg_prefix_optional = 0;
4144 #ifdef REGISTER_PREFIX
4149 if (! m68k_rel32_from_cmdline)
4154 /* Equal to MAX_PRECISION in atof-ieee.c */
4155 #define MAX_LITTLENUMS 6
4157 /* Turn a string in input_line_pointer into a floating point constant
4158 of type TYPE, and store the appropriate bytes in *LITP. The number
4159 of LITTLENUMS emitted is stored in *SIZEP. An error message is
4160 returned, or NULL on OK. */
4163 md_atof (type, litP, sizeP)
4169 LITTLENUM_TYPE words[MAX_LITTLENUMS];
4170 LITTLENUM_TYPE *wordP;
4201 return _("Bad call to MD_ATOF()");
4203 t = atof_ieee (input_line_pointer, type, words);
4205 input_line_pointer = t;
4207 *sizeP = prec * sizeof (LITTLENUM_TYPE);
4208 for (wordP = words; prec--;)
4210 md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE));
4211 litP += sizeof (LITTLENUM_TYPE);
4217 md_number_to_chars (buf, val, n)
4222 number_to_chars_bigendian (buf, val, n);
4226 md_apply_fix3 (fixP, valP, seg)
4229 segT seg ATTRIBUTE_UNUSED;
4231 offsetT val = *valP;
4232 addressT upper_limit;
4233 offsetT lower_limit;
4235 /* This is unnecessary but it convinces the native rs6000 compiler
4236 to generate the code we want. */
4237 char *buf = fixP->fx_frag->fr_literal;
4238 buf += fixP->fx_where;
4239 /* end ibm compiler workaround */
4241 val = ((val & 0xffffffff) ^ 0x80000000) - 0x80000000;
4243 if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0)
4249 memset (buf, 0, fixP->fx_size);
4250 fixP->fx_addnumber = val; /* Remember value for emit_reloc */
4252 if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
4253 && !S_IS_DEFINED (fixP->fx_addsy)
4254 && !S_IS_WEAK (fixP->fx_addsy))
4255 S_SET_WEAK (fixP->fx_addsy);
4260 #ifdef BFD_ASSEMBLER
4261 if (fixP->fx_r_type == BFD_RELOC_VTABLE_INHERIT
4262 || fixP->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
4266 switch (fixP->fx_size)
4268 /* The cast to offsetT below are necessary to make code
4269 correct for machines where ints are smaller than offsetT. */
4273 lower_limit = - (offsetT) 0x80;
4276 *buf++ = (val >> 8);
4278 upper_limit = 0x7fff;
4279 lower_limit = - (offsetT) 0x8000;
4282 *buf++ = (val >> 24);
4283 *buf++ = (val >> 16);
4284 *buf++ = (val >> 8);
4286 upper_limit = 0x7fffffff;
4287 lower_limit = - (offsetT) 0x7fffffff - 1; /* avoid constant overflow */
4290 BAD_CASE (fixP->fx_size);
4293 /* Fix up a negative reloc. */
4294 if (fixP->fx_addsy == NULL && fixP->fx_subsy != NULL)
4296 fixP->fx_addsy = fixP->fx_subsy;
4297 fixP->fx_subsy = NULL;
4301 /* For non-pc-relative values, it's conceivable we might get something
4302 like "0xff" for a byte field. So extend the upper part of the range
4303 to accept such numbers. We arbitrarily disallow "-0xff" or "0xff+0xff",
4304 so that we can do any range checking at all. */
4305 if (! fixP->fx_pcrel && ! fixP->fx_signed)
4306 upper_limit = upper_limit * 2 + 1;
4308 if ((addressT) val > upper_limit
4309 && (val > 0 || val < lower_limit))
4310 as_bad_where (fixP->fx_file, fixP->fx_line, _("value out of range"));
4312 /* A one byte PC-relative reloc means a short branch. We can't use
4313 a short branch with a value of 0 or -1, because those indicate
4314 different opcodes (branches with longer offsets). fixup_segment
4315 in write.c may have clobbered fx_pcrel, so we need to examine the
4318 #ifdef BFD_ASSEMBLER
4319 || fixP->fx_r_type == BFD_RELOC_8_PCREL
4322 && fixP->fx_size == 1
4323 && (fixP->fx_addsy == NULL
4324 || S_IS_DEFINED (fixP->fx_addsy))
4325 && (val == 0 || val == -1))
4326 as_bad_where (fixP->fx_file, fixP->fx_line, _("invalid byte branch offset"));
4329 /* *fragP has been relaxed to its final size, and now needs to have
4330 the bytes inside it modified to conform to the new size There is UGLY
4334 md_convert_frag_1 (fragP)
4335 register fragS *fragP;
4340 /* Address in object code of the displacement. */
4341 register int object_address = fragP->fr_fix + fragP->fr_address;
4343 /* Address in gas core of the place to store the displacement. */
4344 /* This convinces the native rs6000 compiler to generate the code we
4346 register char *buffer_address = fragP->fr_literal;
4347 buffer_address += fragP->fr_fix;
4348 /* end ibm compiler workaround */
4350 /* The displacement of the address, from current location. */
4351 disp = fragP->fr_symbol ? S_GET_VALUE (fragP->fr_symbol) : 0;
4352 disp = (disp + fragP->fr_offset) - object_address;
4354 switch (fragP->fr_subtype)
4356 case TAB (BRANCHBWL, BYTE):
4357 case TAB (BRABSJUNC, BYTE):
4358 case TAB (BRABSJCOND, BYTE):
4359 case TAB (BRANCHBW, BYTE):
4360 know (issbyte (disp));
4362 as_bad_where (fragP->fr_file, fragP->fr_line,
4363 _("short branch with zero offset: use :w"));
4364 fixP = fix_new (fragP, fragP->fr_fix - 1, 1, fragP->fr_symbol,
4365 fragP->fr_offset, 1, RELAX_RELOC_PC8);
4366 fixP->fx_pcrel_adjust = -1;
4368 case TAB (BRANCHBWL, SHORT):
4369 case TAB (BRABSJUNC, SHORT):
4370 case TAB (BRABSJCOND, SHORT):
4371 case TAB (BRANCHBW, SHORT):
4372 fragP->fr_opcode[1] = 0x00;
4373 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
4374 1, RELAX_RELOC_PC16);
4377 case TAB (BRANCHBWL, LONG):
4378 fragP->fr_opcode[1] = (char) 0xFF;
4379 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset,
4380 1, RELAX_RELOC_PC32);
4383 case TAB (BRABSJUNC, LONG):
4384 if (fragP->fr_opcode[0] == 0x61) /* jbsr */
4386 fragP->fr_opcode[0] = 0x4E;
4387 fragP->fr_opcode[1] = (char) 0xB9; /* JSR with ABSL LONG operand */
4388 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset,
4389 0, RELAX_RELOC_ABS32);
4392 else if (fragP->fr_opcode[0] == 0x60) /* jbra */
4394 fragP->fr_opcode[0] = 0x4E;
4395 fragP->fr_opcode[1] = (char) 0xF9; /* JMP with ABSL LONG operand */
4396 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset,
4397 0, RELAX_RELOC_ABS32);
4402 /* This cannot happen, because jbsr and jbra are the only two
4403 unconditional branches. */
4407 case TAB (BRABSJCOND, LONG):
4408 /* Only Bcc 68000 instructions can come here. */
4409 /* Change bcc into b!cc/jmp absl long. */
4411 fragP->fr_opcode[0] ^= 0x01; /* invert bcc */
4412 fragP->fr_opcode[1] = 0x6;/* branch offset = 6 */
4414 /* JF: these used to be fr_opcode[2,3], but they may be in a
4415 different frag, in which case refering to them is a no-no.
4416 Only fr_opcode[0,1] are guaranteed to work. */
4417 *buffer_address++ = 0x4e; /* put in jmp long (0x4ef9) */
4418 *buffer_address++ = (char) 0xf9;
4419 fragP->fr_fix += 2; /* account for jmp instruction */
4420 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol,
4421 fragP->fr_offset, 0, RELAX_RELOC_ABS32);
4424 case TAB (FBRANCH, SHORT):
4425 know ((fragP->fr_opcode[1] & 0x40) == 0);
4426 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
4427 1, RELAX_RELOC_PC16);
4430 case TAB (FBRANCH, LONG):
4431 fragP->fr_opcode[1] |= 0x40; /* Turn on LONG bit */
4432 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset,
4433 1, RELAX_RELOC_PC32);
4436 case TAB (DBCCLBR, SHORT):
4437 case TAB (DBCCABSJ, SHORT):
4438 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
4439 1, RELAX_RELOC_PC16);
4442 case TAB (DBCCLBR, LONG):
4443 /* only DBcc instructions can come here */
4444 /* Change dbcc into dbcc/bral. */
4446 /* JF: these used to be fr_opcode[2-7], but that's wrong */
4447 *buffer_address++ = 0x00; /* branch offset = 4 */
4448 *buffer_address++ = 0x04;
4449 *buffer_address++ = 0x60; /* put in bra pc+6 */
4450 *buffer_address++ = 0x06;
4451 *buffer_address++ = 0x60; /* Put in bral (0x60ff). */
4452 *buffer_address++ = (char) 0xff;
4454 fragP->fr_fix += 6; /* account for bra/jmp instructions */
4455 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset, 1,
4459 case TAB (DBCCABSJ, LONG):
4460 /* only DBcc instructions can come here */
4461 /* Change dbcc into dbcc/jmp. */
4463 /* JF: these used to be fr_opcode[2-7], but that's wrong */
4464 *buffer_address++ = 0x00; /* branch offset = 4 */
4465 *buffer_address++ = 0x04;
4466 *buffer_address++ = 0x60; /* put in bra pc+6 */
4467 *buffer_address++ = 0x06;
4468 *buffer_address++ = 0x4e; /* Put in jmp long (0x4ef9). */
4469 *buffer_address++ = (char) 0xf9;
4471 fragP->fr_fix += 6; /* account for bra/jmp instructions */
4472 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset, 0,
4476 case TAB (PCREL1632, SHORT):
4477 fragP->fr_opcode[1] &= ~0x3F;
4478 fragP->fr_opcode[1] |= 0x3A; /* 072 - mode 7.2 */
4479 fix_new (fragP, (int) (fragP->fr_fix), 2, fragP->fr_symbol,
4480 fragP->fr_offset, 1, RELAX_RELOC_PC16);
4483 case TAB (PCREL1632, LONG):
4484 /* Already set to mode 7.3; this indicates: PC indirect with
4485 suppressed index, 32-bit displacement. */
4486 *buffer_address++ = 0x01;
4487 *buffer_address++ = 0x70;
4489 fixP = fix_new (fragP, (int) (fragP->fr_fix), 4, fragP->fr_symbol,
4490 fragP->fr_offset, 1, RELAX_RELOC_PC32);
4491 fixP->fx_pcrel_adjust = 2;
4494 case TAB (PCINDEX, BYTE):
4495 assert (fragP->fr_fix >= 2);
4496 buffer_address[-2] &= ~1;
4497 fixP = fix_new (fragP, fragP->fr_fix - 1, 1, fragP->fr_symbol,
4498 fragP->fr_offset, 1, RELAX_RELOC_PC8);
4499 fixP->fx_pcrel_adjust = 1;
4501 case TAB (PCINDEX, SHORT):
4502 assert (fragP->fr_fix >= 2);
4503 buffer_address[-2] |= 0x1;
4504 buffer_address[-1] = 0x20;
4505 fixP = fix_new (fragP, (int) (fragP->fr_fix), 2, fragP->fr_symbol,
4506 fragP->fr_offset, 1, RELAX_RELOC_PC16);
4507 fixP->fx_pcrel_adjust = 2;
4510 case TAB (PCINDEX, LONG):
4511 assert (fragP->fr_fix >= 2);
4512 buffer_address[-2] |= 0x1;
4513 buffer_address[-1] = 0x30;
4514 fixP = fix_new (fragP, (int) (fragP->fr_fix), 4, fragP->fr_symbol,
4515 fragP->fr_offset, 1, RELAX_RELOC_PC32);
4516 fixP->fx_pcrel_adjust = 2;
4519 case TAB (ABSTOPCREL, SHORT):
4520 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol, fragP->fr_offset,
4521 1, RELAX_RELOC_PC16);
4524 case TAB (ABSTOPCREL, LONG):
4525 /* The thing to do here is force it to ABSOLUTE LONG, since
4526 ABSTOPCREL is really trying to shorten an ABSOLUTE address anyway */
4527 if ((fragP->fr_opcode[1] & 0x3F) != 0x3A)
4529 fragP->fr_opcode[1] &= ~0x3F;
4530 fragP->fr_opcode[1] |= 0x39; /* Mode 7.1 */
4531 fix_new (fragP, fragP->fr_fix, 4, fragP->fr_symbol, fragP->fr_offset,
4532 0, RELAX_RELOC_ABS32);
4538 #ifndef BFD_ASSEMBLER
4541 md_convert_frag (headers, sec, fragP)
4542 object_headers *headers ATTRIBUTE_UNUSED;
4543 segT sec ATTRIBUTE_UNUSED;
4546 md_convert_frag_1 (fragP);
4552 md_convert_frag (abfd, sec, fragP)
4553 bfd *abfd ATTRIBUTE_UNUSED;
4554 segT sec ATTRIBUTE_UNUSED;
4557 md_convert_frag_1 (fragP);
4561 /* Force truly undefined symbols to their maximum size, and generally set up
4562 the frag list to be relaxed
4565 md_estimate_size_before_relax (fragP, segment)
4566 register fragS *fragP;
4569 /* Handle SZ_UNDEF first, it can be changed to BYTE or SHORT. */
4570 switch (fragP->fr_subtype)
4572 case TAB (BRANCHBWL, SZ_UNDEF):
4573 case TAB (BRABSJUNC, SZ_UNDEF):
4574 case TAB (BRABSJCOND, SZ_UNDEF):
4576 if (S_GET_SEGMENT (fragP->fr_symbol) == segment
4577 && relaxable_symbol (fragP->fr_symbol))
4579 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), BYTE);
4581 else if (flag_short_refs)
4583 /* Symbol is undefined and we want short ref. */
4584 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
4588 /* Symbol is still undefined. Make it LONG. */
4589 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), LONG);
4594 case TAB (BRANCHBW, SZ_UNDEF):
4596 if (S_GET_SEGMENT (fragP->fr_symbol) == segment
4597 && relaxable_symbol (fragP->fr_symbol))
4599 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), BYTE);
4603 /* Symbol is undefined and we don't have long branches. */
4604 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
4609 case TAB (FBRANCH, SZ_UNDEF):
4610 case TAB (DBCCLBR, SZ_UNDEF):
4611 case TAB (DBCCABSJ, SZ_UNDEF):
4612 case TAB (PCREL1632, SZ_UNDEF):
4614 if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
4615 && relaxable_symbol (fragP->fr_symbol))
4618 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
4622 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), LONG);
4627 case TAB (PCINDEX, SZ_UNDEF):
4628 if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
4629 && relaxable_symbol (fragP->fr_symbol)))
4631 fragP->fr_subtype = TAB (PCINDEX, BYTE);
4635 fragP->fr_subtype = TAB (PCINDEX, LONG);
4639 case TAB (ABSTOPCREL, SZ_UNDEF):
4641 if ((S_GET_SEGMENT (fragP->fr_symbol) == segment
4642 && relaxable_symbol (fragP->fr_symbol)))
4644 fragP->fr_subtype = TAB (ABSTOPCREL, SHORT);
4648 fragP->fr_subtype = TAB (ABSTOPCREL, LONG);
4657 /* Now that SZ_UNDEF are taken care of, check others. */
4658 switch (fragP->fr_subtype)
4660 case TAB (BRANCHBWL, BYTE):
4661 case TAB (BRABSJUNC, BYTE):
4662 case TAB (BRABSJCOND, BYTE):
4663 case TAB (BRANCHBW, BYTE):
4664 /* We can't do a short jump to the next instruction, so in that
4665 case we force word mode. If the symbol is at the start of a
4666 frag, and it is the next frag with any data in it (usually
4667 this is just the next frag, but assembler listings may
4668 introduce empty frags), we must use word mode. */
4669 if (fragP->fr_symbol)
4673 sym_frag = symbol_get_frag (fragP->fr_symbol);
4674 if (S_GET_VALUE (fragP->fr_symbol) == sym_frag->fr_address)
4678 for (l = fragP->fr_next; l && l != sym_frag; l = l->fr_next)
4682 fragP->fr_subtype = TAB (TABTYPE (fragP->fr_subtype), SHORT);
4689 return md_relax_table[fragP->fr_subtype].rlx_length;
4692 #if defined(OBJ_AOUT) | defined(OBJ_BOUT)
4693 /* the bit-field entries in the relocation_info struct plays hell
4694 with the byte-order problems of cross-assembly. So as a hack,
4695 I added this mach. dependent ri twiddler. Ugly, but it gets
4697 /* on m68k: first 4 bytes are normal unsigned long, next three bytes
4698 are symbolnum, most sig. byte first. Last byte is broken up with
4699 bit 7 as pcrel, bits 6 & 5 as length, bit 4 as pcrel, and the lower
4700 nibble as nuthin. (on Sun 3 at least) */
4701 /* Translate the internal relocation information into target-specific
4705 md_ri_to_chars (the_bytes, ri)
4707 struct reloc_info_generic *ri;
4710 md_number_to_chars (the_bytes, ri->r_address, 4);
4711 /* now the fun stuff */
4712 the_bytes[4] = (ri->r_symbolnum >> 16) & 0x0ff;
4713 the_bytes[5] = (ri->r_symbolnum >> 8) & 0x0ff;
4714 the_bytes[6] = ri->r_symbolnum & 0x0ff;
4715 the_bytes[7] = (((ri->r_pcrel << 7) & 0x80) | ((ri->r_length << 5) & 0x60) |
4716 ((ri->r_extern << 4) & 0x10));
4719 #endif /* comment */
4721 #ifndef BFD_ASSEMBLER
4723 tc_aout_fix_to_chars (where, fixP, segment_address_in_file)
4726 relax_addressT segment_address_in_file;
4729 * In: length of relocation (or of address) in chars: 1, 2 or 4.
4730 * Out: GNU LD relocation length code: 0, 1, or 2.
4733 static const unsigned char nbytes_r_length[] = {42, 0, 1, 42, 2};
4736 know (fixP->fx_addsy != NULL);
4738 md_number_to_chars (where,
4739 fixP->fx_frag->fr_address + fixP->fx_where - segment_address_in_file,
4742 r_symbolnum = (S_IS_DEFINED (fixP->fx_addsy)
4743 ? S_GET_TYPE (fixP->fx_addsy)
4744 : fixP->fx_addsy->sy_number);
4746 where[4] = (r_symbolnum >> 16) & 0x0ff;
4747 where[5] = (r_symbolnum >> 8) & 0x0ff;
4748 where[6] = r_symbolnum & 0x0ff;
4749 where[7] = (((fixP->fx_pcrel << 7) & 0x80) | ((nbytes_r_length[fixP->fx_size] << 5) & 0x60) |
4750 (((!S_IS_DEFINED (fixP->fx_addsy)) << 4) & 0x10));
4754 #endif /* OBJ_AOUT or OBJ_BOUT */
4756 #ifndef WORKING_DOT_WORD
4757 const int md_short_jump_size = 4;
4758 const int md_long_jump_size = 6;
4761 md_create_short_jump (ptr, from_addr, to_addr, frag, to_symbol)
4763 addressT from_addr, to_addr;
4764 fragS *frag ATTRIBUTE_UNUSED;
4765 symbolS *to_symbol ATTRIBUTE_UNUSED;
4769 offset = to_addr - (from_addr + 2);
4771 md_number_to_chars (ptr, (valueT) 0x6000, 2);
4772 md_number_to_chars (ptr + 2, (valueT) offset, 2);
4776 md_create_long_jump (ptr, from_addr, to_addr, frag, to_symbol)
4778 addressT from_addr, to_addr;
4784 if (!HAVE_LONG_BRANCH(current_architecture))
4786 offset = to_addr - S_GET_VALUE (to_symbol);
4787 md_number_to_chars (ptr, (valueT) 0x4EF9, 2);
4788 md_number_to_chars (ptr + 2, (valueT) offset, 4);
4789 fix_new (frag, (ptr + 2) - frag->fr_literal, 4, to_symbol, (offsetT) 0,
4794 offset = to_addr - (from_addr + 2);
4795 md_number_to_chars (ptr, (valueT) 0x60ff, 2);
4796 md_number_to_chars (ptr + 2, (valueT) offset, 4);
4802 /* Different values of OK tell what its OK to return. Things that
4803 aren't OK are an error (what a shock, no?)
4806 10: Absolute 1:8 only
4807 20: Absolute 0:7 only
4808 30: absolute 0:15 only
4809 40: Absolute 0:31 only
4810 50: absolute 0:127 only
4811 55: absolute -64:63 only
4812 60: absolute -128:127 only
4813 70: absolute 0:4095 only
4820 struct m68k_exp *exp;
4823 if (exp->exp.X_op == O_absent)
4825 /* Do the same thing the VAX asm does */
4826 op (exp) = O_constant;
4832 as_warn (_("expression out of range: defaulting to 1"));
4836 else if (exp->exp.X_op == O_constant)
4841 if (offs (exp) < 1 || offs (exp) > 8)
4843 as_warn (_("expression out of range: defaulting to 1"));
4848 if (offs (exp) < 0 || offs (exp) > 7)
4852 if (offs (exp) < 0 || offs (exp) > 15)
4856 if (offs (exp) < 0 || offs (exp) > 32)
4860 if (offs (exp) < 0 || offs (exp) > 127)
4864 if (offs (exp) < -64 || offs (exp) > 63)
4868 if (offs (exp) < -128 || offs (exp) > 127)
4872 if (offs (exp) < 0 || offs (exp) > 4095)
4875 as_warn (_("expression out of range: defaulting to 0"));
4883 else if (exp->exp.X_op == O_big)
4885 if (offs (exp) <= 0 /* flonum */
4886 && (ok == 80 /* no bignums */
4887 || (ok > 10 /* small-int ranges including 0 ok */
4888 /* If we have a flonum zero, a zero integer should
4889 do as well (e.g., in moveq). */
4890 && generic_floating_point_number.exponent == 0
4891 && generic_floating_point_number.low[0] == 0)))
4893 /* HACK! Turn it into a long */
4894 LITTLENUM_TYPE words[6];
4896 gen_to_words (words, 2, 8L); /* These numbers are magic! */
4897 op (exp) = O_constant;
4900 offs (exp) = words[1] | (words[0] << 16);
4904 op (exp) = O_constant;
4907 offs (exp) = (ok == 10) ? 1 : 0;
4908 as_warn (_("Can't deal with expression; defaulting to %ld"),
4914 if (ok >= 10 && ok <= 70)
4916 op (exp) = O_constant;
4919 offs (exp) = (ok == 10) ? 1 : 0;
4920 as_warn (_("Can't deal with expression; defaulting to %ld"),
4925 if (exp->size != SIZE_UNSPEC)
4933 if (!isbyte (offs (exp)))
4934 as_warn (_("expression doesn't fit in BYTE"));
4937 if (!isword (offs (exp)))
4938 as_warn (_("expression doesn't fit in WORD"));
4946 /* These are the back-ends for the various machine dependent pseudo-ops. */
4950 int ignore ATTRIBUTE_UNUSED;
4952 subseg_set (data_section, 1);
4953 demand_empty_rest_of_line ();
4958 int ignore ATTRIBUTE_UNUSED;
4960 subseg_set (data_section, 2);
4961 demand_empty_rest_of_line ();
4966 int ignore ATTRIBUTE_UNUSED;
4968 /* We don't support putting frags in the BSS segment, we fake it
4969 by marking in_bss, then looking at s_skip for clues. */
4971 subseg_set (bss_section, 0);
4972 demand_empty_rest_of_line ();
4977 int ignore ATTRIBUTE_UNUSED;
4980 register long temp_fill;
4982 temp = 1; /* JF should be 2? */
4983 temp_fill = get_absolute_expression ();
4984 if (!need_pass_2) /* Never make frag if expect extra pass. */
4985 frag_align (temp, (int) temp_fill, 0);
4986 demand_empty_rest_of_line ();
4987 record_alignment (now_seg, temp);
4992 int ignore ATTRIBUTE_UNUSED;
4994 demand_empty_rest_of_line ();
4997 /* Pseudo-ops handled for MRI compatibility. */
4999 /* This function returns non-zero if the argument is a conditional
5000 pseudo-op. This is called when checking whether a pending
5001 alignment is needed. */
5004 m68k_conditional_pseudoop (pop)
5007 return (pop->poc_handler == s_mri_if
5008 || pop->poc_handler == s_mri_else);
5011 /* Handle an MRI style chip specification. */
5020 s = input_line_pointer;
5021 /* We can't use get_symbol_end since the processor names are not proper
5023 while (is_part_of_name (c = *input_line_pointer++))
5025 *--input_line_pointer = 0;
5026 for (i = 0; i < n_archs; i++)
5027 if (strcasecmp (s, archs[i].name) == 0)
5031 as_bad (_("%s: unrecognized processor name"), s);
5032 *input_line_pointer = c;
5033 ignore_rest_of_line ();
5036 *input_line_pointer = c;
5038 if (*input_line_pointer == '/')
5039 current_architecture = 0;
5041 current_architecture &= m68881 | m68851;
5042 current_architecture |= archs[i].arch;
5044 while (*input_line_pointer == '/')
5046 ++input_line_pointer;
5047 s = input_line_pointer;
5048 /* We can't use get_symbol_end since the processor names are not
5050 while (is_part_of_name (c = *input_line_pointer++))
5052 *--input_line_pointer = 0;
5053 if (strcmp (s, "68881") == 0)
5054 current_architecture |= m68881;
5055 else if (strcmp (s, "68851") == 0)
5056 current_architecture |= m68851;
5057 *input_line_pointer = c;
5060 /* Update info about available control registers. */
5061 select_control_regs ();
5064 /* The MRI CHIP pseudo-op. */
5068 int ignore ATTRIBUTE_UNUSED;
5074 stop = mri_comment_field (&stopc);
5077 mri_comment_end (stop, stopc);
5078 demand_empty_rest_of_line ();
5081 /* The MRI FOPT pseudo-op. */
5085 int ignore ATTRIBUTE_UNUSED;
5089 if (strncasecmp (input_line_pointer, "ID=", 3) == 0)
5093 input_line_pointer += 3;
5094 temp = get_absolute_expression ();
5095 if (temp < 0 || temp > 7)
5096 as_bad (_("bad coprocessor id"));
5098 m68k_float_copnum = COP0 + temp;
5102 as_bad (_("unrecognized fopt option"));
5103 ignore_rest_of_line ();
5107 demand_empty_rest_of_line ();
5110 /* The structure used to handle the MRI OPT pseudo-op. */
5114 /* The name of the option. */
5117 /* If this is not NULL, just call this function. The first argument
5118 is the ARG field of this structure, the second argument is
5119 whether the option was negated. */
5120 void (*pfn) PARAMS ((int arg, int on));
5122 /* If this is not NULL, and the PFN field is NULL, set the variable
5123 this points to. Set it to the ARG field if the option was not
5124 negated, and the NOTARG field otherwise. */
5127 /* The value to pass to PFN or to assign to *PVAR. */
5130 /* The value to assign to *PVAR if the option is negated. If PFN is
5131 NULL, and PVAR is not NULL, and ARG and NOTARG are the same, then
5132 the option may not be negated. */
5136 /* The table used to handle the MRI OPT pseudo-op. */
5138 static void skip_to_comma PARAMS ((int, int));
5139 static void opt_nest PARAMS ((int, int));
5140 static void opt_chip PARAMS ((int, int));
5141 static void opt_list PARAMS ((int, int));
5142 static void opt_list_symbols PARAMS ((int, int));
5144 static const struct opt_action opt_table[] =
5146 { "abspcadd", 0, &m68k_abspcadd, 1, 0 },
5148 /* We do relaxing, so there is little use for these options. */
5149 { "b", 0, 0, 0, 0 },
5150 { "brs", 0, 0, 0, 0 },
5151 { "brb", 0, 0, 0, 0 },
5152 { "brl", 0, 0, 0, 0 },
5153 { "brw", 0, 0, 0, 0 },
5155 { "c", 0, 0, 0, 0 },
5156 { "cex", 0, 0, 0, 0 },
5157 { "case", 0, &symbols_case_sensitive, 1, 0 },
5158 { "cl", 0, 0, 0, 0 },
5159 { "cre", 0, 0, 0, 0 },
5160 { "d", 0, &flag_keep_locals, 1, 0 },
5161 { "e", 0, 0, 0, 0 },
5162 { "f", 0, &flag_short_refs, 1, 0 },
5163 { "frs", 0, &flag_short_refs, 1, 0 },
5164 { "frl", 0, &flag_short_refs, 0, 1 },
5165 { "g", 0, 0, 0, 0 },
5166 { "i", 0, 0, 0, 0 },
5167 { "m", 0, 0, 0, 0 },
5168 { "mex", 0, 0, 0, 0 },
5169 { "mc", 0, 0, 0, 0 },
5170 { "md", 0, 0, 0, 0 },
5171 { "nest", opt_nest, 0, 0, 0 },
5172 { "next", skip_to_comma, 0, 0, 0 },
5173 { "o", 0, 0, 0, 0 },
5174 { "old", 0, 0, 0, 0 },
5175 { "op", skip_to_comma, 0, 0, 0 },
5176 { "pco", 0, 0, 0, 0 },
5177 { "p", opt_chip, 0, 0, 0 },
5178 { "pcr", 0, 0, 0, 0 },
5179 { "pcs", 0, 0, 0, 0 },
5180 { "r", 0, 0, 0, 0 },
5181 { "quick", 0, &m68k_quick, 1, 0 },
5182 { "rel32", 0, &m68k_rel32, 1, 0 },
5183 { "s", opt_list, 0, 0, 0 },
5184 { "t", opt_list_symbols, 0, 0, 0 },
5185 { "w", 0, &flag_no_warnings, 0, 1 },
5189 #define OPTCOUNT ((int) (sizeof opt_table / sizeof opt_table[0]))
5191 /* The MRI OPT pseudo-op. */
5195 int ignore ATTRIBUTE_UNUSED;
5203 const struct opt_action *o;
5208 if (*input_line_pointer == '-')
5210 ++input_line_pointer;
5213 else if (strncasecmp (input_line_pointer, "NO", 2) == 0)
5215 input_line_pointer += 2;
5219 s = input_line_pointer;
5220 c = get_symbol_end ();
5222 for (i = 0, o = opt_table; i < OPTCOUNT; i++, o++)
5224 if (strcasecmp (s, o->name) == 0)
5228 /* Restore input_line_pointer now in case the option
5230 *input_line_pointer = c;
5231 (*o->pfn) (o->arg, t);
5233 else if (o->pvar != NULL)
5235 if (! t && o->arg == o->notarg)
5236 as_bad (_("option `%s' may not be negated"), s);
5237 *input_line_pointer = c;
5238 *o->pvar = t ? o->arg : o->notarg;
5241 *input_line_pointer = c;
5247 as_bad (_("option `%s' not recognized"), s);
5248 *input_line_pointer = c;
5251 while (*input_line_pointer++ == ',');
5253 /* Move back to terminating character. */
5254 --input_line_pointer;
5255 demand_empty_rest_of_line ();
5258 /* Skip ahead to a comma. This is used for OPT options which we do
5259 not suppor tand which take arguments. */
5262 skip_to_comma (arg, on)
5263 int arg ATTRIBUTE_UNUSED;
5264 int on ATTRIBUTE_UNUSED;
5266 while (*input_line_pointer != ','
5267 && ! is_end_of_line[(unsigned char) *input_line_pointer])
5268 ++input_line_pointer;
5271 /* Handle the OPT NEST=depth option. */
5275 int arg ATTRIBUTE_UNUSED;
5276 int on ATTRIBUTE_UNUSED;
5278 if (*input_line_pointer != '=')
5280 as_bad (_("bad format of OPT NEST=depth"));
5284 ++input_line_pointer;
5285 max_macro_nest = get_absolute_expression ();
5288 /* Handle the OPT P=chip option. */
5292 int arg ATTRIBUTE_UNUSED;
5293 int on ATTRIBUTE_UNUSED;
5295 if (*input_line_pointer != '=')
5297 /* This is just OPT P, which we do not support. */
5301 ++input_line_pointer;
5305 /* Handle the OPT S option. */
5309 int arg ATTRIBUTE_UNUSED;
5315 /* Handle the OPT T option. */
5318 opt_list_symbols (arg, on)
5319 int arg ATTRIBUTE_UNUSED;
5323 listing |= LISTING_SYMBOLS;
5325 listing &= ~LISTING_SYMBOLS;
5328 /* Handle the MRI REG pseudo-op. */
5332 int ignore ATTRIBUTE_UNUSED;
5341 if (line_label == NULL)
5343 as_bad (_("missing label"));
5344 ignore_rest_of_line ();
5349 stop = mri_comment_field (&stopc);
5353 s = input_line_pointer;
5354 while (ISALNUM (*input_line_pointer)
5355 #ifdef REGISTER_PREFIX
5356 || *input_line_pointer == REGISTER_PREFIX
5358 || *input_line_pointer == '/'
5359 || *input_line_pointer == '-')
5360 ++input_line_pointer;
5361 c = *input_line_pointer;
5362 *input_line_pointer = '\0';
5364 if (m68k_ip_op (s, &rop) != 0)
5366 if (rop.error == NULL)
5367 as_bad (_("bad register list"));
5369 as_bad (_("bad register list: %s"), rop.error);
5370 *input_line_pointer = c;
5371 ignore_rest_of_line ();
5375 *input_line_pointer = c;
5377 if (rop.mode == REGLST)
5379 else if (rop.mode == DREG)
5380 mask = 1 << (rop.reg - DATA0);
5381 else if (rop.mode == AREG)
5382 mask = 1 << (rop.reg - ADDR0 + 8);
5383 else if (rop.mode == FPREG)
5384 mask = 1 << (rop.reg - FP0 + 16);
5385 else if (rop.mode == CONTROL
5388 else if (rop.mode == CONTROL
5391 else if (rop.mode == CONTROL
5396 as_bad (_("bad register list"));
5397 ignore_rest_of_line ();
5401 S_SET_SEGMENT (line_label, reg_section);
5402 S_SET_VALUE (line_label, ~mask);
5403 symbol_set_frag (line_label, &zero_address_frag);
5406 mri_comment_end (stop, stopc);
5408 demand_empty_rest_of_line ();
5411 /* This structure is used for the MRI SAVE and RESTORE pseudo-ops. */
5415 struct save_opts *next;
5417 int symbols_case_sensitive;
5425 /* FIXME: We don't save OPT S. */
5428 /* This variable holds the stack of saved options. */
5430 static struct save_opts *save_stack;
5432 /* The MRI SAVE pseudo-op. */
5436 int ignore ATTRIBUTE_UNUSED;
5438 struct save_opts *s;
5440 s = (struct save_opts *) xmalloc (sizeof (struct save_opts));
5441 s->abspcadd = m68k_abspcadd;
5442 s->symbols_case_sensitive = symbols_case_sensitive;
5443 s->keep_locals = flag_keep_locals;
5444 s->short_refs = flag_short_refs;
5445 s->architecture = current_architecture;
5446 s->quick = m68k_quick;
5447 s->rel32 = m68k_rel32;
5448 s->listing = listing;
5449 s->no_warnings = flag_no_warnings;
5451 s->next = save_stack;
5454 demand_empty_rest_of_line ();
5457 /* The MRI RESTORE pseudo-op. */
5461 int ignore ATTRIBUTE_UNUSED;
5463 struct save_opts *s;
5465 if (save_stack == NULL)
5467 as_bad (_("restore without save"));
5468 ignore_rest_of_line ();
5473 save_stack = s->next;
5475 m68k_abspcadd = s->abspcadd;
5476 symbols_case_sensitive = s->symbols_case_sensitive;
5477 flag_keep_locals = s->keep_locals;
5478 flag_short_refs = s->short_refs;
5479 current_architecture = s->architecture;
5480 m68k_quick = s->quick;
5481 m68k_rel32 = s->rel32;
5482 listing = s->listing;
5483 flag_no_warnings = s->no_warnings;
5487 demand_empty_rest_of_line ();
5490 /* Types of MRI structured control directives. */
5492 enum mri_control_type
5500 /* This structure is used to stack the MRI structured control
5503 struct mri_control_info
5505 /* The directive within which this one is enclosed. */
5506 struct mri_control_info *outer;
5508 /* The type of directive. */
5509 enum mri_control_type type;
5511 /* Whether an ELSE has been in an IF. */
5514 /* The add or sub statement at the end of a FOR. */
5517 /* The label of the top of a FOR or REPEAT loop. */
5520 /* The label to jump to for the next iteration, or the else
5521 expression of a conditional. */
5524 /* The label to jump to to break out of the loop, or the label past
5525 the end of a conditional. */
5529 /* The stack of MRI structured control directives. */
5531 static struct mri_control_info *mri_control_stack;
5533 /* The current MRI structured control directive index number, used to
5534 generate label names. */
5536 static int mri_control_index;
5538 /* Some function prototypes. */
5540 static void mri_assemble PARAMS ((char *));
5541 static char *mri_control_label PARAMS ((void));
5542 static struct mri_control_info *push_mri_control
5543 PARAMS ((enum mri_control_type));
5544 static void pop_mri_control PARAMS ((void));
5545 static int parse_mri_condition PARAMS ((int *));
5546 static int parse_mri_control_operand
5547 PARAMS ((int *, char **, char **, char **, char **));
5548 static int swap_mri_condition PARAMS ((int));
5549 static int reverse_mri_condition PARAMS ((int));
5550 static void build_mri_control_operand
5551 PARAMS ((int, int, char *, char *, char *, char *, const char *,
5552 const char *, int));
5553 static void parse_mri_control_expression
5554 PARAMS ((char *, int, const char *, const char *, int));
5556 /* Assemble an instruction for an MRI structured control directive. */
5564 /* md_assemble expects the opcode to be in lower case. */
5565 for (s = str; *s != ' ' && *s != '\0'; s++)
5571 /* Generate a new MRI label structured control directive label name. */
5574 mri_control_label ()
5578 n = (char *) xmalloc (20);
5579 sprintf (n, "%smc%d", FAKE_LABEL_NAME, mri_control_index);
5580 ++mri_control_index;
5584 /* Create a new MRI structured control directive. */
5586 static struct mri_control_info *
5587 push_mri_control (type)
5588 enum mri_control_type type;
5590 struct mri_control_info *n;
5592 n = (struct mri_control_info *) xmalloc (sizeof (struct mri_control_info));
5596 if (type == mri_if || type == mri_while)
5599 n->top = mri_control_label ();
5600 n->next = mri_control_label ();
5601 n->bottom = mri_control_label ();
5603 n->outer = mri_control_stack;
5604 mri_control_stack = n;
5609 /* Pop off the stack of MRI structured control directives. */
5614 struct mri_control_info *n;
5616 n = mri_control_stack;
5617 mri_control_stack = n->outer;
5625 /* Recognize a condition code in an MRI structured control expression. */
5628 parse_mri_condition (pcc)
5633 know (*input_line_pointer == '<');
5635 ++input_line_pointer;
5636 c1 = *input_line_pointer++;
5637 c2 = *input_line_pointer++;
5639 if (*input_line_pointer != '>')
5641 as_bad (_("syntax error in structured control directive"));
5645 ++input_line_pointer;
5651 *pcc = (c1 << 8) | c2;
5656 /* Parse a single operand in an MRI structured control expression. */
5659 parse_mri_control_operand (pcc, leftstart, leftstop, rightstart, rightstop)
5676 if (*input_line_pointer == '<')
5678 /* It's just a condition code. */
5679 return parse_mri_condition (pcc);
5682 /* Look ahead for the condition code. */
5683 for (s = input_line_pointer; *s != '\0'; ++s)
5685 if (*s == '<' && s[1] != '\0' && s[2] != '\0' && s[3] == '>')
5690 as_bad (_("missing condition code in structured control directive"));
5694 *leftstart = input_line_pointer;
5696 if (*leftstop > *leftstart
5697 && ((*leftstop)[-1] == ' ' || (*leftstop)[-1] == '\t'))
5700 input_line_pointer = s;
5701 if (! parse_mri_condition (pcc))
5704 /* Look ahead for AND or OR or end of line. */
5705 for (s = input_line_pointer; *s != '\0'; ++s)
5707 /* We must make sure we don't misinterpret AND/OR at the end of labels!
5708 if d0 <eq> #FOOAND and d1 <ne> #BAROR then
5710 if ((s == input_line_pointer
5713 && ((strncasecmp (s, "AND", 3) == 0
5714 && (s[3] == '.' || ! is_part_of_name (s[3])))
5715 || (strncasecmp (s, "OR", 2) == 0
5716 && (s[2] == '.' || ! is_part_of_name (s[2])))))
5720 *rightstart = input_line_pointer;
5722 if (*rightstop > *rightstart
5723 && ((*rightstop)[-1] == ' ' || (*rightstop)[-1] == '\t'))
5726 input_line_pointer = s;
5731 #define MCC(b1, b2) (((b1) << 8) | (b2))
5733 /* Swap the sense of a condition. This changes the condition so that
5734 it generates the same result when the operands are swapped. */
5737 swap_mri_condition (cc)
5742 case MCC ('h', 'i'): return MCC ('c', 's');
5743 case MCC ('l', 's'): return MCC ('c', 'c');
5744 /* <HS> is an alias for <CC> */
5745 case MCC ('h', 's'):
5746 case MCC ('c', 'c'): return MCC ('l', 's');
5747 /* <LO> is an alias for <CS> */
5748 case MCC ('l', 'o'):
5749 case MCC ('c', 's'): return MCC ('h', 'i');
5750 case MCC ('p', 'l'): return MCC ('m', 'i');
5751 case MCC ('m', 'i'): return MCC ('p', 'l');
5752 case MCC ('g', 'e'): return MCC ('l', 'e');
5753 case MCC ('l', 't'): return MCC ('g', 't');
5754 case MCC ('g', 't'): return MCC ('l', 't');
5755 case MCC ('l', 'e'): return MCC ('g', 'e');
5756 /* issue a warning for conditions we can not swap */
5757 case MCC ('n', 'e'): return MCC ('n', 'e'); // no problem here
5758 case MCC ('e', 'q'): return MCC ('e', 'q'); // also no problem
5759 case MCC ('v', 'c'):
5760 case MCC ('v', 's'):
5762 as_warn (_("Condition <%c%c> in structured control directive can not be encoded correctly"),
5763 (char) (cc >> 8), (char) (cc));
5769 /* Reverse the sense of a condition. */
5772 reverse_mri_condition (cc)
5777 case MCC ('h', 'i'): return MCC ('l', 's');
5778 case MCC ('l', 's'): return MCC ('h', 'i');
5779 /* <HS> is an alias for <CC> */
5780 case MCC ('h', 's'): return MCC ('l', 'o');
5781 case MCC ('c', 'c'): return MCC ('c', 's');
5782 /* <LO> is an alias for <CS> */
5783 case MCC ('l', 'o'): return MCC ('h', 's');
5784 case MCC ('c', 's'): return MCC ('c', 'c');
5785 case MCC ('n', 'e'): return MCC ('e', 'q');
5786 case MCC ('e', 'q'): return MCC ('n', 'e');
5787 case MCC ('v', 'c'): return MCC ('v', 's');
5788 case MCC ('v', 's'): return MCC ('v', 'c');
5789 case MCC ('p', 'l'): return MCC ('m', 'i');
5790 case MCC ('m', 'i'): return MCC ('p', 'l');
5791 case MCC ('g', 'e'): return MCC ('l', 't');
5792 case MCC ('l', 't'): return MCC ('g', 'e');
5793 case MCC ('g', 't'): return MCC ('l', 'e');
5794 case MCC ('l', 'e'): return MCC ('g', 't');
5799 /* Build an MRI structured control expression. This generates test
5800 and branch instructions. It goes to TRUELAB if the condition is
5801 true, and to FALSELAB if the condition is false. Exactly one of
5802 TRUELAB and FALSELAB will be NULL, meaning to fall through. QUAL
5803 is the size qualifier for the expression. EXTENT is the size to
5804 use for the branch. */
5807 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
5808 rightstop, truelab, falselab, extent)
5815 const char *truelab;
5816 const char *falselab;
5822 if (leftstart != NULL)
5824 struct m68k_op leftop, rightop;
5827 /* Swap the compare operands, if necessary, to produce a legal
5828 m68k compare instruction. Comparing a register operand with
5829 a non-register operand requires the register to be on the
5830 right (cmp, cmpa). Comparing an immediate value with
5831 anything requires the immediate value to be on the left
5836 (void) m68k_ip_op (leftstart, &leftop);
5841 (void) m68k_ip_op (rightstart, &rightop);
5844 if (rightop.mode == IMMED
5845 || ((leftop.mode == DREG || leftop.mode == AREG)
5846 && (rightop.mode != DREG && rightop.mode != AREG)))
5850 /* Correct conditional handling:
5851 if #1 <lt> d0 then ;means if (1 < d0)
5857 cmp #1,d0 if we do *not* swap the operands
5858 bgt true we need the swapped condition!
5865 leftstart = rightstart;
5868 leftstop = rightstop;
5873 cc = swap_mri_condition (cc);
5877 if (truelab == NULL)
5879 cc = reverse_mri_condition (cc);
5883 if (leftstart != NULL)
5885 buf = (char *) xmalloc (20
5886 + (leftstop - leftstart)
5887 + (rightstop - rightstart));
5893 *s++ = TOLOWER (qual);
5895 memcpy (s, leftstart, leftstop - leftstart);
5896 s += leftstop - leftstart;
5898 memcpy (s, rightstart, rightstop - rightstart);
5899 s += rightstop - rightstart;
5905 buf = (char *) xmalloc (20 + strlen (truelab));
5911 *s++ = TOLOWER (extent);
5913 strcpy (s, truelab);
5918 /* Parse an MRI structured control expression. This generates test
5919 and branch instructions. STOP is where the expression ends. It
5920 goes to TRUELAB if the condition is true, and to FALSELAB if the
5921 condition is false. Exactly one of TRUELAB and FALSELAB will be
5922 NULL, meaning to fall through. QUAL is the size qualifier for the
5923 expression. EXTENT is the size to use for the branch. */
5926 parse_mri_control_expression (stop, qual, truelab, falselab, extent)
5929 const char *truelab;
5930 const char *falselab;
5943 if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
5944 &rightstart, &rightstop))
5950 if (strncasecmp (input_line_pointer, "AND", 3) == 0)
5954 if (falselab != NULL)
5957 flab = mri_control_label ();
5959 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
5960 rightstop, (const char *) NULL, flab, extent);
5962 input_line_pointer += 3;
5963 if (*input_line_pointer != '.'
5964 || input_line_pointer[1] == '\0')
5968 qual = input_line_pointer[1];
5969 input_line_pointer += 2;
5972 if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
5973 &rightstart, &rightstop))
5979 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
5980 rightstop, truelab, falselab, extent);
5982 if (falselab == NULL)
5985 else if (strncasecmp (input_line_pointer, "OR", 2) == 0)
5989 if (truelab != NULL)
5992 tlab = mri_control_label ();
5994 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
5995 rightstop, tlab, (const char *) NULL, extent);
5997 input_line_pointer += 2;
5998 if (*input_line_pointer != '.'
5999 || input_line_pointer[1] == '\0')
6003 qual = input_line_pointer[1];
6004 input_line_pointer += 2;
6007 if (! parse_mri_control_operand (&cc, &leftstart, &leftstop,
6008 &rightstart, &rightstop))
6014 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6015 rightstop, truelab, falselab, extent);
6017 if (truelab == NULL)
6022 build_mri_control_operand (qual, cc, leftstart, leftstop, rightstart,
6023 rightstop, truelab, falselab, extent);
6027 if (input_line_pointer != stop)
6028 as_bad (_("syntax error in structured control directive"));
6031 /* Handle the MRI IF pseudo-op. This may be a structured control
6032 directive, or it may be a regular assembler conditional, depending
6041 struct mri_control_info *n;
6043 /* A structured control directive must end with THEN with an
6044 optional qualifier. */
6045 s = input_line_pointer;
6046 /* We only accept '*' as introduction of comments if preceded by white space
6047 or at first column of a line (I think this can't actually happen here?)
6048 This is important when assembling:
6049 if d0 <ne> 12(a0,d0*2) then
6050 if d0 <ne> #CONST*20 then */
6051 while ( ! ( is_end_of_line[(unsigned char) *s]
6054 && ( s == input_line_pointer
6056 || *(s-1) == '\t'))))
6059 while (s > input_line_pointer && (*s == ' ' || *s == '\t'))
6062 if (s - input_line_pointer > 1
6066 if (s - input_line_pointer < 3
6067 || strncasecmp (s - 3, "THEN", 4) != 0)
6071 as_bad (_("missing then"));
6072 ignore_rest_of_line ();
6076 /* It's a conditional. */
6081 /* Since this might be a conditional if, this pseudo-op will be
6082 called even if we are supported to be ignoring input. Double
6083 check now. Clobber *input_line_pointer so that ignore_input
6084 thinks that this is not a special pseudo-op. */
6085 c = *input_line_pointer;
6086 *input_line_pointer = 0;
6087 if (ignore_input ())
6089 *input_line_pointer = c;
6090 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6091 ++input_line_pointer;
6092 demand_empty_rest_of_line ();
6095 *input_line_pointer = c;
6097 n = push_mri_control (mri_if);
6099 parse_mri_control_expression (s - 3, qual, (const char *) NULL,
6100 n->next, s[1] == '.' ? s[2] : '\0');
6103 input_line_pointer = s + 3;
6105 input_line_pointer = s + 1;
6109 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6110 ++input_line_pointer;
6113 demand_empty_rest_of_line ();
6116 /* Handle the MRI else pseudo-op. If we are currently doing an MRI
6117 structured IF, associate the ELSE with the IF. Otherwise, assume
6118 it is a conditional else. */
6129 && (mri_control_stack == NULL
6130 || mri_control_stack->type != mri_if
6131 || mri_control_stack->else_seen))
6137 c = *input_line_pointer;
6138 *input_line_pointer = 0;
6139 if (ignore_input ())
6141 *input_line_pointer = c;
6142 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6143 ++input_line_pointer;
6144 demand_empty_rest_of_line ();
6147 *input_line_pointer = c;
6149 if (mri_control_stack == NULL
6150 || mri_control_stack->type != mri_if
6151 || mri_control_stack->else_seen)
6153 as_bad (_("else without matching if"));
6154 ignore_rest_of_line ();
6158 mri_control_stack->else_seen = 1;
6160 buf = (char *) xmalloc (20 + strlen (mri_control_stack->bottom));
6161 q[0] = TOLOWER (qual);
6163 sprintf (buf, "bra%s %s", q, mri_control_stack->bottom);
6167 colon (mri_control_stack->next);
6171 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6172 ++input_line_pointer;
6175 demand_empty_rest_of_line ();
6178 /* Handle the MRI ENDI pseudo-op. */
6182 int ignore ATTRIBUTE_UNUSED;
6184 if (mri_control_stack == NULL
6185 || mri_control_stack->type != mri_if)
6187 as_bad (_("endi without matching if"));
6188 ignore_rest_of_line ();
6192 /* ignore_input will not return true for ENDI, so we don't need to
6193 worry about checking it again here. */
6195 if (! mri_control_stack->else_seen)
6196 colon (mri_control_stack->next);
6197 colon (mri_control_stack->bottom);
6203 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6204 ++input_line_pointer;
6207 demand_empty_rest_of_line ();
6210 /* Handle the MRI BREAK pseudo-op. */
6213 s_mri_break (extent)
6216 struct mri_control_info *n;
6220 n = mri_control_stack;
6222 && n->type != mri_for
6223 && n->type != mri_repeat
6224 && n->type != mri_while)
6228 as_bad (_("break outside of structured loop"));
6229 ignore_rest_of_line ();
6233 buf = (char *) xmalloc (20 + strlen (n->bottom));
6234 ex[0] = TOLOWER (extent);
6236 sprintf (buf, "bra%s %s", ex, n->bottom);
6242 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6243 ++input_line_pointer;
6246 demand_empty_rest_of_line ();
6249 /* Handle the MRI NEXT pseudo-op. */
6255 struct mri_control_info *n;
6259 n = mri_control_stack;
6261 && n->type != mri_for
6262 && n->type != mri_repeat
6263 && n->type != mri_while)
6267 as_bad (_("next outside of structured loop"));
6268 ignore_rest_of_line ();
6272 buf = (char *) xmalloc (20 + strlen (n->next));
6273 ex[0] = TOLOWER (extent);
6275 sprintf (buf, "bra%s %s", ex, n->next);
6281 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6282 ++input_line_pointer;
6285 demand_empty_rest_of_line ();
6288 /* Handle the MRI FOR pseudo-op. */
6294 const char *varstart, *varstop;
6295 const char *initstart, *initstop;
6296 const char *endstart, *endstop;
6297 const char *bystart, *bystop;
6301 struct mri_control_info *n;
6307 FOR.q var = init { TO | DOWNTO } end [ BY by ] DO.e
6311 varstart = input_line_pointer;
6313 /* Look for the '='. */
6314 while (! is_end_of_line[(unsigned char) *input_line_pointer]
6315 && *input_line_pointer != '=')
6316 ++input_line_pointer;
6317 if (*input_line_pointer != '=')
6319 as_bad (_("missing ="));
6320 ignore_rest_of_line ();
6324 varstop = input_line_pointer;
6325 if (varstop > varstart
6326 && (varstop[-1] == ' ' || varstop[-1] == '\t'))
6329 ++input_line_pointer;
6331 initstart = input_line_pointer;
6333 /* Look for TO or DOWNTO. */
6336 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6338 if (strncasecmp (input_line_pointer, "TO", 2) == 0
6339 && ! is_part_of_name (input_line_pointer[2]))
6341 initstop = input_line_pointer;
6342 input_line_pointer += 2;
6345 if (strncasecmp (input_line_pointer, "DOWNTO", 6) == 0
6346 && ! is_part_of_name (input_line_pointer[6]))
6348 initstop = input_line_pointer;
6350 input_line_pointer += 6;
6353 ++input_line_pointer;
6355 if (initstop == NULL)
6357 as_bad (_("missing to or downto"));
6358 ignore_rest_of_line ();
6361 if (initstop > initstart
6362 && (initstop[-1] == ' ' || initstop[-1] == '\t'))
6366 endstart = input_line_pointer;
6368 /* Look for BY or DO. */
6371 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6373 if (strncasecmp (input_line_pointer, "BY", 2) == 0
6374 && ! is_part_of_name (input_line_pointer[2]))
6376 endstop = input_line_pointer;
6378 input_line_pointer += 2;
6381 if (strncasecmp (input_line_pointer, "DO", 2) == 0
6382 && (input_line_pointer[2] == '.'
6383 || ! is_part_of_name (input_line_pointer[2])))
6385 endstop = input_line_pointer;
6386 input_line_pointer += 2;
6389 ++input_line_pointer;
6391 if (endstop == NULL)
6393 as_bad (_("missing do"));
6394 ignore_rest_of_line ();
6397 if (endstop > endstart
6398 && (endstop[-1] == ' ' || endstop[-1] == '\t'))
6404 bystop = bystart + 2;
6409 bystart = input_line_pointer;
6413 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6415 if (strncasecmp (input_line_pointer, "DO", 2) == 0
6416 && (input_line_pointer[2] == '.'
6417 || ! is_part_of_name (input_line_pointer[2])))
6419 bystop = input_line_pointer;
6420 input_line_pointer += 2;
6423 ++input_line_pointer;
6427 as_bad (_("missing do"));
6428 ignore_rest_of_line ();
6431 if (bystop > bystart
6432 && (bystop[-1] == ' ' || bystop[-1] == '\t'))
6436 if (*input_line_pointer != '.')
6440 extent = input_line_pointer[1];
6441 input_line_pointer += 2;
6444 /* We have fully parsed the FOR operands. Now build the loop. */
6446 n = push_mri_control (mri_for);
6448 buf = (char *) xmalloc (50 + (input_line_pointer - varstart));
6457 *s++ = TOLOWER (qual);
6459 memcpy (s, initstart, initstop - initstart);
6460 s += initstop - initstart;
6462 memcpy (s, varstart, varstop - varstart);
6463 s += varstop - varstart;
6475 *s++ = TOLOWER (qual);
6477 memcpy (s, endstart, endstop - endstart);
6478 s += endstop - endstart;
6480 memcpy (s, varstart, varstop - varstart);
6481 s += varstop - varstart;
6486 ex[0] = TOLOWER (extent);
6489 sprintf (buf, "blt%s %s", ex, n->bottom);
6491 sprintf (buf, "bgt%s %s", ex, n->bottom);
6494 /* Put together the add or sub instruction used by ENDF. */
6502 *s++ = TOLOWER (qual);
6504 memcpy (s, bystart, bystop - bystart);
6505 s += bystop - bystart;
6507 memcpy (s, varstart, varstop - varstart);
6508 s += varstop - varstart;
6514 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6515 ++input_line_pointer;
6518 demand_empty_rest_of_line ();
6521 /* Handle the MRI ENDF pseudo-op. */
6525 int ignore ATTRIBUTE_UNUSED;
6527 if (mri_control_stack == NULL
6528 || mri_control_stack->type != mri_for)
6530 as_bad (_("endf without for"));
6531 ignore_rest_of_line ();
6535 colon (mri_control_stack->next);
6537 mri_assemble (mri_control_stack->incr);
6539 sprintf (mri_control_stack->incr, "bra %s", mri_control_stack->top);
6540 mri_assemble (mri_control_stack->incr);
6542 free (mri_control_stack->incr);
6544 colon (mri_control_stack->bottom);
6550 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6551 ++input_line_pointer;
6554 demand_empty_rest_of_line ();
6557 /* Handle the MRI REPEAT pseudo-op. */
6560 s_mri_repeat (ignore)
6561 int ignore ATTRIBUTE_UNUSED;
6563 struct mri_control_info *n;
6565 n = push_mri_control (mri_repeat);
6569 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6570 ++input_line_pointer;
6572 demand_empty_rest_of_line ();
6575 /* Handle the MRI UNTIL pseudo-op. */
6583 if (mri_control_stack == NULL
6584 || mri_control_stack->type != mri_repeat)
6586 as_bad (_("until without repeat"));
6587 ignore_rest_of_line ();
6591 colon (mri_control_stack->next);
6593 for (s = input_line_pointer; ! is_end_of_line[(unsigned char) *s]; s++)
6596 parse_mri_control_expression (s, qual, (const char *) NULL,
6597 mri_control_stack->top, '\0');
6599 colon (mri_control_stack->bottom);
6601 input_line_pointer = s;
6607 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6608 ++input_line_pointer;
6611 demand_empty_rest_of_line ();
6614 /* Handle the MRI WHILE pseudo-op. */
6622 struct mri_control_info *n;
6624 s = input_line_pointer;
6625 /* We only accept '*' as introduction of comments if preceded by white space
6626 or at first column of a line (I think this can't actually happen here?)
6627 This is important when assembling:
6628 while d0 <ne> 12(a0,d0*2) do
6629 while d0 <ne> #CONST*20 do */
6630 while (! (is_end_of_line[(unsigned char) *s]
6633 && (s == input_line_pointer
6635 || *(s-1) == '\t'))))
6638 while (*s == ' ' || *s == '\t')
6640 if (s - input_line_pointer > 1
6643 if (s - input_line_pointer < 2
6644 || strncasecmp (s - 1, "DO", 2) != 0)
6646 as_bad (_("missing do"));
6647 ignore_rest_of_line ();
6651 n = push_mri_control (mri_while);
6655 parse_mri_control_expression (s - 1, qual, (const char *) NULL, n->bottom,
6656 s[1] == '.' ? s[2] : '\0');
6658 input_line_pointer = s + 1;
6659 if (*input_line_pointer == '.')
6660 input_line_pointer += 2;
6664 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6665 ++input_line_pointer;
6668 demand_empty_rest_of_line ();
6671 /* Handle the MRI ENDW pseudo-op. */
6675 int ignore ATTRIBUTE_UNUSED;
6679 if (mri_control_stack == NULL
6680 || mri_control_stack->type != mri_while)
6682 as_bad (_("endw without while"));
6683 ignore_rest_of_line ();
6687 buf = (char *) xmalloc (20 + strlen (mri_control_stack->next));
6688 sprintf (buf, "bra %s", mri_control_stack->next);
6692 colon (mri_control_stack->bottom);
6698 while (! is_end_of_line[(unsigned char) *input_line_pointer])
6699 ++input_line_pointer;
6702 demand_empty_rest_of_line ();
6707 * Invocation line includes a switch not recognized by the base assembler.
6708 * See if it's a processor-specific option. These are:
6710 * -[A]m[c]68000, -[A]m[c]68008, -[A]m[c]68010, -[A]m[c]68020, -[A]m[c]68030, -[A]m[c]68040
6711 * -[A]m[c]68881, -[A]m[c]68882, -[A]m[c]68851
6712 * Select the architecture. Instructions or features not
6713 * supported by the selected architecture cause fatal
6714 * errors. More than one may be specified. The default is
6715 * -m68020 -m68851 -m68881. Note that -m68008 is a synonym
6716 * for -m68000, and -m68882 is a synonym for -m68881.
6717 * -[A]m[c]no-68851, -[A]m[c]no-68881
6718 * Don't accept 688?1 instructions. (The "c" is kind of silly,
6719 * so don't use or document it, but that's the way the parsing
6722 * -pic Indicates PIC.
6723 * -k Indicates PIC. (Sun 3 only.)
6724 * --pcrel Never turn PC-relative branches into absolute jumps.
6727 * Permit `|' to be used in expressions.
6732 const char *md_shortopts = "lSA:m:kQ:V";
6734 const char *md_shortopts = "lSA:m:k";
6737 struct option md_longopts[] = {
6738 #define OPTION_PIC (OPTION_MD_BASE)
6739 {"pic", no_argument, NULL, OPTION_PIC},
6740 #define OPTION_REGISTER_PREFIX_OPTIONAL (OPTION_MD_BASE + 1)
6741 {"register-prefix-optional", no_argument, NULL,
6742 OPTION_REGISTER_PREFIX_OPTIONAL},
6743 #define OPTION_BITWISE_OR (OPTION_MD_BASE + 2)
6744 {"bitwise-or", no_argument, NULL, OPTION_BITWISE_OR},
6745 #define OPTION_BASE_SIZE_DEFAULT_16 (OPTION_MD_BASE + 3)
6746 {"base-size-default-16", no_argument, NULL, OPTION_BASE_SIZE_DEFAULT_16},
6747 #define OPTION_BASE_SIZE_DEFAULT_32 (OPTION_MD_BASE + 4)
6748 {"base-size-default-32", no_argument, NULL, OPTION_BASE_SIZE_DEFAULT_32},
6749 #define OPTION_DISP_SIZE_DEFAULT_16 (OPTION_MD_BASE + 5)
6750 {"disp-size-default-16", no_argument, NULL, OPTION_DISP_SIZE_DEFAULT_16},
6751 #define OPTION_DISP_SIZE_DEFAULT_32 (OPTION_MD_BASE + 6)
6752 {"disp-size-default-32", no_argument, NULL, OPTION_DISP_SIZE_DEFAULT_32},
6753 #define OPTION_PCREL (OPTION_MD_BASE + 7)
6754 {"pcrel", no_argument, NULL, OPTION_PCREL},
6755 {NULL, no_argument, NULL, 0}
6757 size_t md_longopts_size = sizeof (md_longopts);
6760 md_parse_option (c, arg)
6766 case 'l': /* -l means keep external to 2 bit offset
6767 rather than 16 bit one */
6768 flag_short_refs = 1;
6771 case 'S': /* -S means that jbsr's always turn into
6773 flag_long_jumps = 1;
6776 case OPTION_PCREL: /* --pcrel means never turn PC-relative
6777 branches into absolute jumps. */
6778 flag_keep_pcrel = 1;
6784 /* intentional fall-through */
6787 if (arg[0] == 'n' && arg[1] == 'o' && arg[2] == '-')
6791 const char *oarg = arg;
6797 if (arg[0] == 'c' && arg[1] == '6')
6800 for (i = 0; i < n_archs; i++)
6801 if (!strcmp (arg, archs[i].name))
6806 as_bad (_("unrecognized option `%s'"), oarg);
6809 arch = archs[i].arch;
6812 else if (arch == m68851)
6821 if (arg[0] == 'c' && arg[1] == '6')
6824 for (i = 0; i < n_archs; i++)
6825 if (!strcmp (arg, archs[i].name))
6827 unsigned long arch = archs[i].arch;
6828 if (cpu_of_arch (arch))
6829 /* It's a cpu spec. */
6831 current_architecture &= ~m68000up;
6832 current_architecture |= arch;
6834 else if (arch == m68881)
6836 current_architecture |= m68881;
6839 else if (arch == m68851)
6841 current_architecture |= m68851;
6851 as_bad (_("unrecognized architecture specification `%s'"), arg);
6860 break; /* -pic, Position Independent Code */
6862 case OPTION_REGISTER_PREFIX_OPTIONAL:
6863 flag_reg_prefix_optional = 1;
6864 reg_prefix_optional_seen = 1;
6867 /* -V: SVR4 argument to print version ID. */
6869 print_version_id ();
6872 /* -Qy, -Qn: SVR4 arguments controlling whether a .comment section
6873 should be emitted or not. FIXME: Not implemented. */
6877 case OPTION_BITWISE_OR:
6882 n = (char *) xmalloc (strlen (m68k_comment_chars) + 1);
6884 for (s = m68k_comment_chars; *s != '\0'; s++)
6888 m68k_comment_chars = n;
6892 case OPTION_BASE_SIZE_DEFAULT_16:
6893 m68k_index_width_default = SIZE_WORD;
6896 case OPTION_BASE_SIZE_DEFAULT_32:
6897 m68k_index_width_default = SIZE_LONG;
6900 case OPTION_DISP_SIZE_DEFAULT_16:
6902 m68k_rel32_from_cmdline = 1;
6905 case OPTION_DISP_SIZE_DEFAULT_32:
6907 m68k_rel32_from_cmdline = 1;
6918 md_show_usage (stream)
6921 const char *default_cpu = TARGET_CPU;
6922 int default_arch, i;
6924 /* Get the canonical name for the default target CPU. */
6925 if (*default_cpu == 'm')
6927 for (i = 0; i < n_archs; i++)
6929 if (strcasecmp (default_cpu, archs[i].name) == 0)
6931 default_arch = archs[i].arch;
6932 for (i = 0; i < n_archs; i++)
6934 if (archs[i].arch == default_arch
6937 default_cpu = archs[i].name;
6944 fprintf (stream, _("\
6946 -l use 1 word for refs to undefined symbols [default 2]\n\
6947 -m68000 | -m68008 | -m68010 | -m68020 | -m68030 | -m68040 | -m68060 |\n\
6948 -m68302 | -m68331 | -m68332 | -m68333 | -m68340 | -m68360 | -mcpu32 |\n\
6949 -m5200 | -m5202 | -m5204 | -m5206 | -m5206e | -m5307 | -m5407\n\
6950 specify variant of 680X0 architecture [default %s]\n\
6951 -m68881 | -m68882 | -mno-68881 | -mno-68882\n\
6952 target has/lacks floating-point coprocessor\n\
6953 [default yes for 68020, 68030, and cpu32]\n"),
6955 fprintf (stream, _("\
6956 -m68851 | -mno-68851\n\
6957 target has/lacks memory-management unit coprocessor\n\
6958 [default yes for 68020 and up]\n\
6959 -pic, -k generate position independent code\n\
6960 -S turn jbsr into jsr\n\
6961 --pcrel never turn PC-relative branches into absolute jumps\n\
6962 --register-prefix-optional\n\
6963 recognize register names without prefix character\n\
6964 --bitwise-or do not treat `|' as a comment character\n"));
6965 fprintf (stream, _("\
6966 --base-size-default-16 base reg without size is 16 bits\n\
6967 --base-size-default-32 base reg without size is 32 bits (default)\n\
6968 --disp-size-default-16 displacement with unknown size is 16 bits\n\
6969 --disp-size-default-32 displacement with unknown size is 32 bits (default)\n"));
6974 /* TEST2: Test md_assemble() */
6975 /* Warning, this routine probably doesn't work anymore */
6979 struct m68k_it the_ins;
6987 if (!gets (buf) || !*buf)
6989 if (buf[0] == '|' || buf[1] == '.')
6991 for (cp = buf; *cp; cp++)
6996 memset (&the_ins, '\0', sizeof (the_ins));
6997 m68k_ip (&the_ins, buf);
7000 printf (_("Error %s in %s\n"), the_ins.error, buf);
7004 printf (_("Opcode(%d.%s): "), the_ins.numo, the_ins.args);
7005 for (n = 0; n < the_ins.numo; n++)
7006 printf (" 0x%x", the_ins.opcode[n] & 0xffff);
7008 print_the_insn (&the_ins.opcode[0], stdout);
7009 (void) putchar ('\n');
7011 for (n = 0; n < strlen (the_ins.args) / 2; n++)
7013 if (the_ins.operands[n].error)
7015 printf ("op%d Error %s in %s\n", n, the_ins.operands[n].error, buf);
7018 printf ("mode %d, reg %d, ", the_ins.operands[n].mode, the_ins.operands[n].reg);
7019 if (the_ins.operands[n].b_const)
7020 printf ("Constant: '%.*s', ", 1 + the_ins.operands[n].e_const - the_ins.operands[n].b_const, the_ins.operands[n].b_const);
7021 printf ("ireg %d, isiz %d, imul %d, ", the_ins.operands[n].ireg, the_ins.operands[n].isiz, the_ins.operands[n].imul);
7022 if (the_ins.operands[n].b_iadd)
7023 printf ("Iadd: '%.*s',", 1 + the_ins.operands[n].e_iadd - the_ins.operands[n].b_iadd, the_ins.operands[n].b_iadd);
7024 (void) putchar ('\n');
7036 while (*str && *str != ' ')
7038 if (str[-1] == ':' || str[1] == '=')
7045 /* Possible states for relaxation:
7047 0 0 branch offset byte (bra, etc)
7051 1 0 indexed offsets byte a0@(32,d4:w:1) etc
7055 2 0 two-offset index word-word a0@(32,d4)@(45) etc
7062 /* We have no need to default values of symbols. */
7065 md_undefined_symbol (name)
7066 char *name ATTRIBUTE_UNUSED;
7071 /* Round up a section size to the appropriate boundary. */
7073 md_section_align (segment, size)
7074 segT segment ATTRIBUTE_UNUSED;
7078 #ifdef BFD_ASSEMBLER
7079 /* For a.out, force the section size to be aligned. If we don't do
7080 this, BFD will align it for us, but it will not write out the
7081 final bytes of the section. This may be a bug in BFD, but it is
7082 easier to fix it here since that is how the other a.out targets
7086 align = bfd_get_section_alignment (stdoutput, segment);
7087 size = ((size + (1 << align) - 1) & ((valueT) -1 << align));
7094 /* Exactly what point is a PC-relative offset relative TO?
7095 On the 68k, it is relative to the address of the first extension
7096 word. The difference between the addresses of the offset and the
7097 first extension word is stored in fx_pcrel_adjust. */
7099 md_pcrel_from (fixP)
7104 /* Because fx_pcrel_adjust is a char, and may be unsigned, we explicitly
7105 sign extend the value here. */
7106 adjust = ((fixP->fx_pcrel_adjust & 0xff) ^ 0x80) - 0x80;
7109 return fixP->fx_where + fixP->fx_frag->fr_address - adjust;
7112 #ifndef BFD_ASSEMBLER
7116 tc_coff_symbol_emit_hook (ignore)
7117 symbolS *ignore ATTRIBUTE_UNUSED;
7122 tc_coff_sizemachdep (frag)
7125 switch (frag->fr_subtype & 0x3)
7143 m68k_elf_final_processing ()
7145 /* Set file-specific flags if this is a cpu32 processor */
7146 if (cpu_of_arch (current_architecture) & cpu32)
7147 elf_elfheader (stdoutput)->e_flags |= EF_CPU32;
7148 else if ((cpu_of_arch (current_architecture) & m68000up)
7149 && !(cpu_of_arch (current_architecture) & m68020up))
7150 elf_elfheader (stdoutput)->e_flags |= EF_M68000;