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[ARM] Fix NULL dereference of march_ext_opt
[deliverable/binutils-gdb.git] / gas / config / tc-msp430.c
1 /* tc-msp430.c -- Assembler code for the Texas Instruments MSP430
2
3 Copyright (C) 2002-2018 Free Software Foundation, Inc.
4 Contributed by Dmitry Diky <diwil@mail.ru>
5
6 This file is part of GAS, the GNU Assembler.
7
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 3, or (at your option)
11 any later version.
12
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.
17
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
20 the Free Software Foundation, 51 Franklin Street - Fifth Floor,
21 Boston, MA 02110-1301, USA. */
22
23 #include "as.h"
24 #include <limits.h>
25 #include "subsegs.h"
26 #include "opcode/msp430.h"
27 #include "safe-ctype.h"
28 #include "dwarf2dbg.h"
29 #include "elf/msp430.h"
30 #include "libiberty.h"
31
32 /* We will disable polymorphs by default because it is dangerous.
33 The potential problem here is the following: assume we got the
34 following code:
35
36 jump .l1
37 nop
38 jump subroutine ; external symbol
39 .l1:
40 nop
41 ret
42
43 In case of assembly time relaxation we'll get:
44 0: jmp .l1 <.text +0x08> (reloc deleted)
45 2: nop
46 4: br subroutine
47 .l1:
48 8: nop
49 10: ret
50
51 If the 'subroutine' is within +-1024 bytes range then linker
52 will produce:
53 0: jmp .text +0x08
54 2: nop
55 4: jmp subroutine
56 .l1:
57 6: nop
58 8: ret ; 'jmp .text +0x08' will land here. WRONG!!!
59
60 The workaround is the following:
61 1. Declare global var enable_polymorphs which set to 1 via option -mp.
62 2. Declare global var enable_relax which set to 1 via option -mQ.
63
64 If polymorphs are enabled, and relax isn't, treat all jumps as long jumps,
65 do not delete any relocs and leave them for linker.
66
67 If relax is enabled, relax at assembly time and kill relocs as necessary. */
68
69 int msp430_enable_relax;
70 int msp430_enable_polys;
71
72 /* GCC uses the some condition codes which we'll
73 implement as new polymorph instructions.
74
75 COND EXPL SHORT JUMP LONG JUMP
76 ===============================================
77 eq == jeq jne +4; br lab
78 ne != jne jeq +4; br lab
79
80 ltn honours no-overflow flag
81 ltn < jn jn +2; jmp +4; br lab
82
83 lt < jl jge +4; br lab
84 ltu < jlo lhs +4; br lab
85 le <= see below
86 leu <= see below
87
88 gt > see below
89 gtu > see below
90 ge >= jge jl +4; br lab
91 geu >= jhs jlo +4; br lab
92 ===============================================
93
94 Therefore, new opcodes are (BranchEQ -> beq; and so on...)
95 beq,bne,blt,bltn,bltu,bge,bgeu
96 'u' means unsigned compares
97
98 Also, we add 'jump' instruction:
99 jump UNCOND -> jmp br lab
100
101 They will have fmt == 4, and insn_opnumb == number of instruction. */
102
103 struct rcodes_s
104 {
105 const char * name;
106 int index; /* Corresponding insn_opnumb. */
107 int sop; /* Opcode if jump length is short. */
108 long lpos; /* Label position. */
109 long lop0; /* Opcode 1 _word_ (16 bits). */
110 long lop1; /* Opcode second word. */
111 long lop2; /* Opcode third word. */
112 };
113
114 #define MSP430_RLC(n,i,sop,o1) \
115 {#n, i, sop, 2, (o1 + 2), 0x4010, 0}
116
117 static struct rcodes_s msp430_rcodes[] =
118 {
119 MSP430_RLC (beq, 0, 0x2400, 0x2000),
120 MSP430_RLC (bne, 1, 0x2000, 0x2400),
121 MSP430_RLC (blt, 2, 0x3800, 0x3400),
122 MSP430_RLC (bltu, 3, 0x2800, 0x2c00),
123 MSP430_RLC (bge, 4, 0x3400, 0x3800),
124 MSP430_RLC (bgeu, 5, 0x2c00, 0x2800),
125 {"bltn", 6, 0x3000, 3, 0x3000 + 1, 0x3c00 + 2,0x4010},
126 {"jump", 7, 0x3c00, 1, 0x4010, 0, 0},
127 {0,0,0,0,0,0,0}
128 };
129
130 #undef MSP430_RLC
131 #define MSP430_RLC(n,i,sop,o1) \
132 {#n, i, sop, 2, (o1 + 2), 0x0030, 0}
133
134 static struct rcodes_s msp430x_rcodes[] =
135 {
136 MSP430_RLC (beq, 0, 0x2400, 0x2000),
137 MSP430_RLC (bne, 1, 0x2000, 0x2400),
138 MSP430_RLC (blt, 2, 0x3800, 0x3400),
139 MSP430_RLC (bltu, 3, 0x2800, 0x2c00),
140 MSP430_RLC (bge, 4, 0x3400, 0x3800),
141 MSP430_RLC (bgeu, 5, 0x2c00, 0x2800),
142 {"bltn", 6, 0x3000, 3, 0x0030 + 1, 0x3c00 + 2, 0x3000},
143 {"jump", 7, 0x3c00, 1, 0x0030, 0, 0},
144 {0,0,0,0,0,0,0}
145 };
146 #undef MSP430_RLC
147
148 /* More difficult than above and they have format 5.
149
150 COND EXPL SHORT LONG
151 =================================================================
152 gt > jeq +2; jge label jeq +6; jl +4; br label
153 gtu > jeq +2; jhs label jeq +6; jlo +4; br label
154 leu <= jeq label; jlo label jeq +2; jhs +4; br label
155 le <= jeq label; jl label jeq +2; jge +4; br label
156 ================================================================= */
157
158 struct hcodes_s
159 {
160 const char * name;
161 int index; /* Corresponding insn_opnumb. */
162 int tlab; /* Number of labels in short mode. */
163 int op0; /* Opcode for first word of short jump. */
164 int op1; /* Opcode for second word of short jump. */
165 int lop0; /* Opcodes for long jump mode. */
166 int lop1;
167 int lop2;
168 };
169
170 static struct hcodes_s msp430_hcodes[] =
171 {
172 {"bgt", 0, 1, 0x2401, 0x3400, 0x2403, 0x3802, 0x4010 },
173 {"bgtu", 1, 1, 0x2401, 0x2c00, 0x2403, 0x2802, 0x4010 },
174 {"bleu", 2, 2, 0x2400, 0x2800, 0x2401, 0x2c02, 0x4010 },
175 {"ble", 3, 2, 0x2400, 0x3800, 0x2401, 0x3402, 0x4010 },
176 {0,0,0,0,0,0,0,0}
177 };
178
179 static struct hcodes_s msp430x_hcodes[] =
180 {
181 {"bgt", 0, 1, 0x2401, 0x3400, 0x2403, 0x3802, 0x0030 },
182 {"bgtu", 1, 1, 0x2401, 0x2c00, 0x2403, 0x2802, 0x0030 },
183 {"bleu", 2, 2, 0x2400, 0x2800, 0x2401, 0x2c02, 0x0030 },
184 {"ble", 3, 2, 0x2400, 0x3800, 0x2401, 0x3402, 0x0030 },
185 {0,0,0,0,0,0,0,0}
186 };
187
188 const char comment_chars[] = ";";
189 const char line_comment_chars[] = "#";
190 const char line_separator_chars[] = "{";
191 const char EXP_CHARS[] = "eE";
192 const char FLT_CHARS[] = "dD";
193
194 /* Handle long expressions. */
195 extern LITTLENUM_TYPE generic_bignum[];
196
197 static struct hash_control *msp430_hash;
198
199 /* Relaxations. */
200 #define STATE_UNCOND_BRANCH 1 /* jump */
201 #define STATE_NOOV_BRANCH 3 /* bltn */
202 #define STATE_SIMPLE_BRANCH 2 /* bne, beq, etc... */
203 #define STATE_EMUL_BRANCH 4
204
205 #define CNRL 2
206 #define CUBL 4
207 #define CNOL 8
208 #define CSBL 6
209 #define CEBL 4
210
211 /* Length. */
212 #define STATE_BITS10 1 /* wild guess. short jump */
213 #define STATE_WORD 2 /* 2 bytes pc rel. addr. more */
214 #define STATE_UNDEF 3 /* cannot handle this yet. convert to word mode */
215
216 #define ENCODE_RELAX(what,length) (((what) << 2) + (length))
217 #define RELAX_STATE(s) ((s) & 3)
218 #define RELAX_LEN(s) ((s) >> 2)
219 #define RELAX_NEXT(a,b) ENCODE_RELAX (a, b + 1)
220
221 relax_typeS md_relax_table[] =
222 {
223 /* Unused. */
224 {1, 1, 0, 0},
225 {1, 1, 0, 0},
226 {1, 1, 0, 0},
227 {1, 1, 0, 0},
228
229 /* Unconditional jump. */
230 {1, 1, 8, 5},
231 {1024, -1024, CNRL, RELAX_NEXT (STATE_UNCOND_BRANCH, STATE_BITS10)}, /* state 10 bits displ */
232 {0, 0, CUBL, RELAX_NEXT (STATE_UNCOND_BRANCH, STATE_WORD)}, /* state word */
233 {1, 1, CUBL, 0}, /* state undef */
234
235 /* Simple branches. */
236 {0, 0, 8, 9},
237 {1024, -1024, CNRL, RELAX_NEXT (STATE_SIMPLE_BRANCH, STATE_BITS10)}, /* state 10 bits displ */
238 {0, 0, CSBL, RELAX_NEXT (STATE_SIMPLE_BRANCH, STATE_WORD)}, /* state word */
239 {1, 1, CSBL, 0},
240
241 /* blt no overflow branch. */
242 {1, 1, 8, 13},
243 {1024, -1024, CNRL, RELAX_NEXT (STATE_NOOV_BRANCH, STATE_BITS10)}, /* state 10 bits displ */
244 {0, 0, CNOL, RELAX_NEXT (STATE_NOOV_BRANCH, STATE_WORD)}, /* state word */
245 {1, 1, CNOL, 0},
246
247 /* Emulated branches. */
248 {1, 1, 8, 17},
249 {1020, -1020, CEBL, RELAX_NEXT (STATE_EMUL_BRANCH, STATE_BITS10)}, /* state 10 bits displ */
250 {0, 0, CNOL, RELAX_NEXT (STATE_EMUL_BRANCH, STATE_WORD)}, /* state word */
251 {1, 1, CNOL, 0}
252 };
253
254
255 #define MAX_OP_LEN 4096
256
257 typedef enum msp_isa
258 {
259 MSP_ISA_430,
260 MSP_ISA_430X,
261 MSP_ISA_430Xv2
262 } msp_isa;
263
264 static enum msp_isa selected_isa = MSP_ISA_430Xv2;
265
266 static inline bfd_boolean
267 target_is_430x (void)
268 {
269 return selected_isa >= MSP_ISA_430X;
270 }
271
272 static inline bfd_boolean
273 target_is_430xv2 (void)
274 {
275 return selected_isa == MSP_ISA_430Xv2;
276 }
277
278 /* Generate an absolute 16-bit relocation.
279 For the 430X we generate a relocation without linker range checking
280 if the value is being used in an extended (ie 20-bit) instruction,
281 otherwise if have a shifted expression we use a HI reloc.
282 For the 430 we generate a relocation without assembler range checking
283 if we are handling an immediate value or a byte-width instruction. */
284
285 #undef CHECK_RELOC_MSP430
286 #define CHECK_RELOC_MSP430(OP) \
287 (target_is_430x () \
288 ? (extended_op \
289 ? BFD_RELOC_16 \
290 : ((OP).vshift == 1) \
291 ? BFD_RELOC_MSP430_ABS_HI16 \
292 : BFD_RELOC_MSP430X_ABS16) \
293 : ((imm_op || byte_op) \
294 ? BFD_RELOC_MSP430_16_BYTE : BFD_RELOC_MSP430_16))
295
296 /* Generate a 16-bit pc-relative relocation.
297 For the 430X we generate a relocation without linker range checking.
298 For the 430 we generate a relocation without assembler range checking
299 if we are handling an immediate value or a byte-width instruction. */
300 #undef CHECK_RELOC_MSP430_PCREL
301 #define CHECK_RELOC_MSP430_PCREL \
302 (target_is_430x () \
303 ? BFD_RELOC_MSP430X_PCR16 \
304 : (imm_op || byte_op) \
305 ? BFD_RELOC_MSP430_16_PCREL_BYTE : BFD_RELOC_MSP430_16_PCREL)
306
307 /* Profiling capability:
308 It is a performance hit to use gcc's profiling approach for this tiny target.
309 Even more -- jtag hardware facility does not perform any profiling functions.
310 However we've got gdb's built-in simulator where we can do anything.
311 Therefore my suggestion is:
312
313 We define new section ".profiler" which holds all profiling information.
314 We define new pseudo operation .profiler which will instruct assembler to
315 add new profile entry to the object file. Profile should take place at the
316 present address.
317
318 Pseudo-op format:
319
320 .profiler flags,function_to_profile [, cycle_corrector, extra]
321
322 where 'flags' is a combination of the following chars:
323 s - function Start
324 x - function eXit
325 i - function is in Init section
326 f - function is in Fini section
327 l - Library call
328 c - libC standard call
329 d - stack value Demand (saved at run-time in simulator)
330 I - Interrupt service routine
331 P - Prologue start
332 p - Prologue end
333 E - Epilogue start
334 e - Epilogue end
335 j - long Jump/ sjlj unwind
336 a - an Arbitrary code fragment
337 t - exTra parameter saved (constant value like frame size)
338 '""' optional: "sil" == sil
339
340 function_to_profile - function's address
341 cycle_corrector - a value which should be added to the cycle
342 counter, zero if omitted
343 extra - some extra parameter, zero if omitted.
344
345 For example:
346 ------------------------------
347 .global fxx
348 .type fxx,@function
349 fxx:
350 .LFrameOffset_fxx=0x08
351 .profiler "scdP", fxx ; function entry.
352 ; we also demand stack value to be displayed
353 push r11
354 push r10
355 push r9
356 push r8
357 .profiler "cdp",fxx,0, .LFrameOffset_fxx ; check stack value at this point
358 ; (this is a prologue end)
359 ; note, that spare var filled with the frame size
360 mov r15,r8
361 ....
362 .profiler cdE,fxx ; check stack
363 pop r8
364 pop r9
365 pop r10
366 pop r11
367 .profiler xcde,fxx,3 ; exit adds 3 to the cycle counter
368 ret ; cause 'ret' insn takes 3 cycles
369 -------------------------------
370
371 This profiling approach does not produce any overhead and
372 absolutely harmless.
373 So, even profiled code can be uploaded to the MCU. */
374 #define MSP430_PROFILER_FLAG_ENTRY 1 /* s */
375 #define MSP430_PROFILER_FLAG_EXIT 2 /* x */
376 #define MSP430_PROFILER_FLAG_INITSECT 4 /* i */
377 #define MSP430_PROFILER_FLAG_FINISECT 8 /* f */
378 #define MSP430_PROFILER_FLAG_LIBCALL 0x10 /* l */
379 #define MSP430_PROFILER_FLAG_STDCALL 0x20 /* c */
380 #define MSP430_PROFILER_FLAG_STACKDMD 0x40 /* d */
381 #define MSP430_PROFILER_FLAG_ISR 0x80 /* I */
382 #define MSP430_PROFILER_FLAG_PROLSTART 0x100 /* P */
383 #define MSP430_PROFILER_FLAG_PROLEND 0x200 /* p */
384 #define MSP430_PROFILER_FLAG_EPISTART 0x400 /* E */
385 #define MSP430_PROFILER_FLAG_EPIEND 0x800 /* e */
386 #define MSP430_PROFILER_FLAG_JUMP 0x1000 /* j */
387 #define MSP430_PROFILER_FLAG_FRAGMENT 0x2000 /* a */
388 #define MSP430_PROFILER_FLAG_EXTRA 0x4000 /* t */
389 #define MSP430_PROFILER_FLAG_notyet 0x8000 /* ? */
390
391 static int
392 pow2value (int y)
393 {
394 int n = 0;
395 unsigned int x;
396
397 x = y;
398
399 if (!x)
400 return 1;
401
402 for (; x; x = x >> 1)
403 if (x & 1)
404 n++;
405
406 return n == 1;
407 }
408
409 /* Parse ordinary expression. */
410
411 static char *
412 parse_exp (char * s, expressionS * op)
413 {
414 input_line_pointer = s;
415 expression (op);
416 if (op->X_op == O_absent)
417 as_bad (_("missing operand"));
418 /* Our caller is likely to check that the entire expression was parsed.
419 If we have found a hex constant with an 'h' suffix, ilp will be left
420 pointing at the 'h', so skip it here. */
421 if (input_line_pointer != NULL
422 && op->X_op == O_constant
423 && (*input_line_pointer == 'h' || *input_line_pointer == 'H'))
424 ++ input_line_pointer;
425 return input_line_pointer;
426 }
427
428
429 /* Delete spaces from s: X ( r 1 2) => X(r12). */
430
431 static void
432 del_spaces (char * s)
433 {
434 while (*s)
435 {
436 if (ISSPACE (*s))
437 {
438 char *m = s + 1;
439
440 while (ISSPACE (*m) && *m)
441 m++;
442 memmove (s, m, strlen (m) + 1);
443 }
444 else
445 s++;
446 }
447 }
448
449 static inline char *
450 skip_space (char * s)
451 {
452 while (ISSPACE (*s))
453 ++s;
454 return s;
455 }
456
457 /* Extract one word from FROM and copy it to TO. Delimiters are ",;\n" */
458
459 static char *
460 extract_operand (char * from, char * to, int limit)
461 {
462 int size = 0;
463
464 /* Drop leading whitespace. */
465 from = skip_space (from);
466
467 while (size < limit && *from)
468 {
469 *(to + size) = *from;
470 if (*from == ',' || *from == ';' || *from == '\n')
471 break;
472 from++;
473 size++;
474 }
475
476 *(to + size) = 0;
477 del_spaces (to);
478
479 from++;
480
481 return from;
482 }
483
484 static void
485 msp430_profiler (int dummy ATTRIBUTE_UNUSED)
486 {
487 char buffer[1024];
488 char f[32];
489 char * str = buffer;
490 char * flags = f;
491 int p_flags = 0;
492 char * halt;
493 int ops = 0;
494 int left;
495 char * s;
496 segT seg;
497 int subseg;
498 char * end = 0;
499 expressionS exp;
500 expressionS exp1;
501
502 s = input_line_pointer;
503 end = input_line_pointer;
504
505 while (*end && *end != '\n')
506 end++;
507
508 while (*s && *s != '\n')
509 {
510 if (*s == ',')
511 ops++;
512 s++;
513 }
514
515 left = 3 - ops;
516
517 if (ops < 1)
518 {
519 as_bad (_(".profiler pseudo requires at least two operands."));
520 input_line_pointer = end;
521 return;
522 }
523
524 input_line_pointer = extract_operand (input_line_pointer, flags, 32);
525
526 while (*flags)
527 {
528 switch (*flags)
529 {
530 case '"':
531 break;
532 case 'a':
533 p_flags |= MSP430_PROFILER_FLAG_FRAGMENT;
534 break;
535 case 'j':
536 p_flags |= MSP430_PROFILER_FLAG_JUMP;
537 break;
538 case 'P':
539 p_flags |= MSP430_PROFILER_FLAG_PROLSTART;
540 break;
541 case 'p':
542 p_flags |= MSP430_PROFILER_FLAG_PROLEND;
543 break;
544 case 'E':
545 p_flags |= MSP430_PROFILER_FLAG_EPISTART;
546 break;
547 case 'e':
548 p_flags |= MSP430_PROFILER_FLAG_EPIEND;
549 break;
550 case 's':
551 p_flags |= MSP430_PROFILER_FLAG_ENTRY;
552 break;
553 case 'x':
554 p_flags |= MSP430_PROFILER_FLAG_EXIT;
555 break;
556 case 'i':
557 p_flags |= MSP430_PROFILER_FLAG_INITSECT;
558 break;
559 case 'f':
560 p_flags |= MSP430_PROFILER_FLAG_FINISECT;
561 break;
562 case 'l':
563 p_flags |= MSP430_PROFILER_FLAG_LIBCALL;
564 break;
565 case 'c':
566 p_flags |= MSP430_PROFILER_FLAG_STDCALL;
567 break;
568 case 'd':
569 p_flags |= MSP430_PROFILER_FLAG_STACKDMD;
570 break;
571 case 'I':
572 p_flags |= MSP430_PROFILER_FLAG_ISR;
573 break;
574 case 't':
575 p_flags |= MSP430_PROFILER_FLAG_EXTRA;
576 break;
577 default:
578 as_warn (_("unknown profiling flag - ignored."));
579 break;
580 }
581 flags++;
582 }
583
584 if (p_flags
585 && ( ! pow2value (p_flags & ( MSP430_PROFILER_FLAG_ENTRY
586 | MSP430_PROFILER_FLAG_EXIT))
587 || ! pow2value (p_flags & ( MSP430_PROFILER_FLAG_PROLSTART
588 | MSP430_PROFILER_FLAG_PROLEND
589 | MSP430_PROFILER_FLAG_EPISTART
590 | MSP430_PROFILER_FLAG_EPIEND))
591 || ! pow2value (p_flags & ( MSP430_PROFILER_FLAG_INITSECT
592 | MSP430_PROFILER_FLAG_FINISECT))))
593 {
594 as_bad (_("ambiguous flags combination - '.profiler' directive ignored."));
595 input_line_pointer = end;
596 return;
597 }
598
599 /* Generate temp symbol which denotes current location. */
600 if (now_seg == absolute_section) /* Paranoia ? */
601 {
602 exp1.X_op = O_constant;
603 exp1.X_add_number = abs_section_offset;
604 as_warn (_("profiling in absolute section?"));
605 }
606 else
607 {
608 exp1.X_op = O_symbol;
609 exp1.X_add_symbol = symbol_temp_new_now ();
610 exp1.X_add_number = 0;
611 }
612
613 /* Generate a symbol which holds flags value. */
614 exp.X_op = O_constant;
615 exp.X_add_number = p_flags;
616
617 /* Save current section. */
618 seg = now_seg;
619 subseg = now_subseg;
620
621 /* Now go to .profiler section. */
622 obj_elf_change_section (".profiler", SHT_PROGBITS, 0, 0, 0, 0, 0, 0);
623
624 /* Save flags. */
625 emit_expr (& exp, 2);
626
627 /* Save label value. */
628 emit_expr (& exp1, 2);
629
630 while (ops--)
631 {
632 /* Now get profiling info. */
633 halt = extract_operand (input_line_pointer, str, 1024);
634 /* Process like ".word xxx" directive. */
635 (void) parse_exp (str, & exp);
636 emit_expr (& exp, 2);
637 input_line_pointer = halt;
638 }
639
640 /* Fill the rest with zeros. */
641 exp.X_op = O_constant;
642 exp.X_add_number = 0;
643 while (left--)
644 emit_expr (& exp, 2);
645
646 /* Return to current section. */
647 subseg_set (seg, subseg);
648 }
649
650 static char *
651 extract_word (char * from, char * to, int limit)
652 {
653 char *op_end;
654 int size = 0;
655
656 /* Drop leading whitespace. */
657 from = skip_space (from);
658 *to = 0;
659
660 /* Find the op code end. */
661 for (op_end = from; *op_end != 0 && is_part_of_name (*op_end);)
662 {
663 to[size++] = *op_end++;
664 if (size + 1 >= limit)
665 break;
666 }
667
668 to[size] = 0;
669 return op_end;
670 }
671
672 #define OPTION_MMCU 'm'
673 #define OPTION_RELAX 'Q'
674 #define OPTION_POLYMORPHS 'P'
675 #define OPTION_LARGE 'l'
676 static bfd_boolean large_model = FALSE;
677 #define OPTION_NO_INTR_NOPS 'N'
678 #define OPTION_INTR_NOPS 'n'
679 static bfd_boolean gen_interrupt_nops = FALSE;
680 #define OPTION_WARN_INTR_NOPS 'y'
681 #define OPTION_NO_WARN_INTR_NOPS 'Y'
682 static bfd_boolean warn_interrupt_nops = TRUE;
683 #define OPTION_MCPU 'c'
684 #define OPTION_MOVE_DATA 'd'
685 static bfd_boolean move_data = FALSE;
686 #define OPTION_DATA_REGION 'r'
687 static bfd_boolean upper_data_region_in_use = FALSE;
688
689 enum
690 {
691 OPTION_SILICON_ERRATA = OPTION_MD_BASE,
692 OPTION_SILICON_ERRATA_WARN,
693 };
694
695 static unsigned int silicon_errata_fix = 0;
696 static unsigned int silicon_errata_warn = 0;
697 #define SILICON_ERRATA_CPU4 (1 << 0)
698 #define SILICON_ERRATA_CPU8 (1 << 1)
699 #define SILICON_ERRATA_CPU11 (1 << 2)
700 #define SILICON_ERRATA_CPU12 (1 << 3)
701 #define SILICON_ERRATA_CPU13 (1 << 4)
702 #define SILICON_ERRATA_CPU19 (1 << 5)
703
704 static void
705 msp430_set_arch (int option)
706 {
707 char str[32]; /* 32 for good measure. */
708
709 input_line_pointer = extract_word (input_line_pointer, str, 32);
710
711 md_parse_option (option, str);
712 bfd_set_arch_mach (stdoutput, TARGET_ARCH,
713 target_is_430x () ? bfd_mach_msp430x : bfd_mach_msp11);
714 }
715
716 /* This is a copy of the same data structure found in gcc/config/msp430/msp430.c
717 Keep these two structures in sync.
718 The data in this structure has been extracted from version 1.194 of the
719 devices.csv file released by TI in September 2016. */
720
721 struct msp430_mcu_data
722 {
723 const char * name;
724 unsigned int revision; /* 0=> MSP430, 1=>MSP430X, 2=> MSP430Xv2. */
725 unsigned int hwmpy; /* 0=>none, 1=>16-bit, 2=>16-bit w/sign extend, 4=>32-bit, 8=> 32-bit (5xx). */
726 }
727 msp430_mcu_data [] =
728 {
729 { "cc430f5123",2,8 },
730 { "cc430f5125",2,8 },
731 { "cc430f5133",2,8 },
732 { "cc430f5135",2,8 },
733 { "cc430f5137",2,8 },
734 { "cc430f5143",2,8 },
735 { "cc430f5145",2,8 },
736 { "cc430f5147",2,8 },
737 { "cc430f6125",2,8 },
738 { "cc430f6126",2,8 },
739 { "cc430f6127",2,8 },
740 { "cc430f6135",2,8 },
741 { "cc430f6137",2,8 },
742 { "cc430f6143",2,8 },
743 { "cc430f6145",2,8 },
744 { "cc430f6147",2,8 },
745 { "msp430afe221",0,2 },
746 { "msp430afe222",0,2 },
747 { "msp430afe223",0,2 },
748 { "msp430afe231",0,2 },
749 { "msp430afe232",0,2 },
750 { "msp430afe233",0,2 },
751 { "msp430afe251",0,2 },
752 { "msp430afe252",0,2 },
753 { "msp430afe253",0,2 },
754 { "msp430bt5190",2,8 },
755 { "msp430c091",0,0 },
756 { "msp430c092",0,0 },
757 { "msp430c111",0,0 },
758 { "msp430c1111",0,0 },
759 { "msp430c112",0,0 },
760 { "msp430c1121",0,0 },
761 { "msp430c1331",0,0 },
762 { "msp430c1351",0,0 },
763 { "msp430c311s",0,0 },
764 { "msp430c312",0,0 },
765 { "msp430c313",0,0 },
766 { "msp430c314",0,0 },
767 { "msp430c315",0,0 },
768 { "msp430c323",0,0 },
769 { "msp430c325",0,0 },
770 { "msp430c336",0,1 },
771 { "msp430c337",0,1 },
772 { "msp430c412",0,0 },
773 { "msp430c413",0,0 },
774 { "msp430cg4616",1,1 },
775 { "msp430cg4617",1,1 },
776 { "msp430cg4618",1,1 },
777 { "msp430cg4619",1,1 },
778 { "msp430e112",0,0 },
779 { "msp430e313",0,0 },
780 { "msp430e315",0,0 },
781 { "msp430e325",0,0 },
782 { "msp430e337",0,1 },
783 { "msp430f110",0,0 },
784 { "msp430f1101",0,0 },
785 { "msp430f1101a",0,0 },
786 { "msp430f1111",0,0 },
787 { "msp430f1111a",0,0 },
788 { "msp430f112",0,0 },
789 { "msp430f1121",0,0 },
790 { "msp430f1121a",0,0 },
791 { "msp430f1122",0,0 },
792 { "msp430f1132",0,0 },
793 { "msp430f122",0,0 },
794 { "msp430f1222",0,0 },
795 { "msp430f123",0,0 },
796 { "msp430f1232",0,0 },
797 { "msp430f133",0,0 },
798 { "msp430f135",0,0 },
799 { "msp430f147",0,1 },
800 { "msp430f1471",0,1 },
801 { "msp430f148",0,1 },
802 { "msp430f1481",0,1 },
803 { "msp430f149",0,1 },
804 { "msp430f1491",0,1 },
805 { "msp430f155",0,0 },
806 { "msp430f156",0,0 },
807 { "msp430f157",0,0 },
808 { "msp430f1610",0,1 },
809 { "msp430f1611",0,1 },
810 { "msp430f1612",0,1 },
811 { "msp430f167",0,1 },
812 { "msp430f168",0,1 },
813 { "msp430f169",0,1 },
814 { "msp430f2001",0,0 },
815 { "msp430f2002",0,0 },
816 { "msp430f2003",0,0 },
817 { "msp430f2011",0,0 },
818 { "msp430f2012",0,0 },
819 { "msp430f2013",0,0 },
820 { "msp430f2101",0,0 },
821 { "msp430f2111",0,0 },
822 { "msp430f2112",0,0 },
823 { "msp430f2121",0,0 },
824 { "msp430f2122",0,0 },
825 { "msp430f2131",0,0 },
826 { "msp430f2132",0,0 },
827 { "msp430f2232",0,0 },
828 { "msp430f2234",0,0 },
829 { "msp430f2252",0,0 },
830 { "msp430f2254",0,0 },
831 { "msp430f2272",0,0 },
832 { "msp430f2274",0,0 },
833 { "msp430f233",0,2 },
834 { "msp430f2330",0,2 },
835 { "msp430f235",0,2 },
836 { "msp430f2350",0,2 },
837 { "msp430f2370",0,2 },
838 { "msp430f2410",0,2 },
839 { "msp430f2416",1,2 },
840 { "msp430f2417",1,2 },
841 { "msp430f2418",1,2 },
842 { "msp430f2419",1,2 },
843 { "msp430f247",0,2 },
844 { "msp430f2471",0,2 },
845 { "msp430f248",0,2 },
846 { "msp430f2481",0,2 },
847 { "msp430f249",0,2 },
848 { "msp430f2491",0,2 },
849 { "msp430f2616",1,2 },
850 { "msp430f2617",1,2 },
851 { "msp430f2618",1,2 },
852 { "msp430f2619",1,2 },
853 { "msp430f412",0,0 },
854 { "msp430f413",0,0 },
855 { "msp430f4132",0,0 },
856 { "msp430f415",0,0 },
857 { "msp430f4152",0,0 },
858 { "msp430f417",0,0 },
859 { "msp430f423",0,1 },
860 { "msp430f423a",0,1 },
861 { "msp430f425",0,1 },
862 { "msp430f4250",0,0 },
863 { "msp430f425a",0,1 },
864 { "msp430f4260",0,0 },
865 { "msp430f427",0,1 },
866 { "msp430f4270",0,0 },
867 { "msp430f427a",0,1 },
868 { "msp430f435",0,0 },
869 { "msp430f4351",0,0 },
870 { "msp430f436",0,0 },
871 { "msp430f4361",0,0 },
872 { "msp430f437",0,0 },
873 { "msp430f4371",0,0 },
874 { "msp430f438",0,0 },
875 { "msp430f439",0,0 },
876 { "msp430f447",0,1 },
877 { "msp430f448",0,1 },
878 { "msp430f4481",0,1 },
879 { "msp430f449",0,1 },
880 { "msp430f4491",0,1 },
881 { "msp430f4616",1,1 },
882 { "msp430f46161",1,1 },
883 { "msp430f4617",1,1 },
884 { "msp430f46171",1,1 },
885 { "msp430f4618",1,1 },
886 { "msp430f46181",1,1 },
887 { "msp430f4619",1,1 },
888 { "msp430f46191",1,1 },
889 { "msp430f47126",1,4 },
890 { "msp430f47127",1,4 },
891 { "msp430f47163",1,4 },
892 { "msp430f47166",1,4 },
893 { "msp430f47167",1,4 },
894 { "msp430f47173",1,4 },
895 { "msp430f47176",1,4 },
896 { "msp430f47177",1,4 },
897 { "msp430f47183",1,4 },
898 { "msp430f47186",1,4 },
899 { "msp430f47187",1,4 },
900 { "msp430f47193",1,4 },
901 { "msp430f47196",1,4 },
902 { "msp430f47197",1,4 },
903 { "msp430f477",0,0 },
904 { "msp430f478",0,0 },
905 { "msp430f4783",0,4 },
906 { "msp430f4784",0,4 },
907 { "msp430f479",0,0 },
908 { "msp430f4793",0,4 },
909 { "msp430f4794",0,4 },
910 { "msp430f5131",2,8 },
911 { "msp430f5132",2,8 },
912 { "msp430f5151",2,8 },
913 { "msp430f5152",2,8 },
914 { "msp430f5171",2,8 },
915 { "msp430f5172",2,8 },
916 { "msp430f5212",2,8 },
917 { "msp430f5213",2,8 },
918 { "msp430f5214",2,8 },
919 { "msp430f5217",2,8 },
920 { "msp430f5218",2,8 },
921 { "msp430f5219",2,8 },
922 { "msp430f5222",2,8 },
923 { "msp430f5223",2,8 },
924 { "msp430f5224",2,8 },
925 { "msp430f5227",2,8 },
926 { "msp430f5228",2,8 },
927 { "msp430f5229",2,8 },
928 { "msp430f5232",2,8 },
929 { "msp430f5234",2,8 },
930 { "msp430f5237",2,8 },
931 { "msp430f5239",2,8 },
932 { "msp430f5242",2,8 },
933 { "msp430f5244",2,8 },
934 { "msp430f5247",2,8 },
935 { "msp430f5249",2,8 },
936 { "msp430f5252",2,8 },
937 { "msp430f5253",2,8 },
938 { "msp430f5254",2,8 },
939 { "msp430f5255",2,8 },
940 { "msp430f5256",2,8 },
941 { "msp430f5257",2,8 },
942 { "msp430f5258",2,8 },
943 { "msp430f5259",2,8 },
944 { "msp430f5304",2,8 },
945 { "msp430f5308",2,8 },
946 { "msp430f5309",2,8 },
947 { "msp430f5310",2,8 },
948 { "msp430f5324",2,8 },
949 { "msp430f5325",2,8 },
950 { "msp430f5326",2,8 },
951 { "msp430f5327",2,8 },
952 { "msp430f5328",2,8 },
953 { "msp430f5329",2,8 },
954 { "msp430f5333",2,8 },
955 { "msp430f5335",2,8 },
956 { "msp430f5336",2,8 },
957 { "msp430f5338",2,8 },
958 { "msp430f5340",2,8 },
959 { "msp430f5341",2,8 },
960 { "msp430f5342",2,8 },
961 { "msp430f5358",2,8 },
962 { "msp430f5359",2,8 },
963 { "msp430f5418",2,8 },
964 { "msp430f5418a",2,8 },
965 { "msp430f5419",2,8 },
966 { "msp430f5419a",2,8 },
967 { "msp430f5435",2,8 },
968 { "msp430f5435a",2,8 },
969 { "msp430f5436",2,8 },
970 { "msp430f5436a",2,8 },
971 { "msp430f5437",2,8 },
972 { "msp430f5437a",2,8 },
973 { "msp430f5438",2,8 },
974 { "msp430f5438a",2,8 },
975 { "msp430f5500",2,8 },
976 { "msp430f5501",2,8 },
977 { "msp430f5502",2,8 },
978 { "msp430f5503",2,8 },
979 { "msp430f5504",2,8 },
980 { "msp430f5505",2,8 },
981 { "msp430f5506",2,8 },
982 { "msp430f5507",2,8 },
983 { "msp430f5508",2,8 },
984 { "msp430f5509",2,8 },
985 { "msp430f5510",2,8 },
986 { "msp430f5513",2,8 },
987 { "msp430f5514",2,8 },
988 { "msp430f5515",2,8 },
989 { "msp430f5517",2,8 },
990 { "msp430f5519",2,8 },
991 { "msp430f5521",2,8 },
992 { "msp430f5522",2,8 },
993 { "msp430f5524",2,8 },
994 { "msp430f5525",2,8 },
995 { "msp430f5526",2,8 },
996 { "msp430f5527",2,8 },
997 { "msp430f5528",2,8 },
998 { "msp430f5529",2,8 },
999 { "msp430f5630",2,8 },
1000 { "msp430f5631",2,8 },
1001 { "msp430f5632",2,8 },
1002 { "msp430f5633",2,8 },
1003 { "msp430f5634",2,8 },
1004 { "msp430f5635",2,8 },
1005 { "msp430f5636",2,8 },
1006 { "msp430f5637",2,8 },
1007 { "msp430f5638",2,8 },
1008 { "msp430f5658",2,8 },
1009 { "msp430f5659",2,8 },
1010 { "msp430f5xx_6xxgeneric",2,8 },
1011 { "msp430f6433",2,8 },
1012 { "msp430f6435",2,8 },
1013 { "msp430f6436",2,8 },
1014 { "msp430f6438",2,8 },
1015 { "msp430f6458",2,8 },
1016 { "msp430f6459",2,8 },
1017 { "msp430f6630",2,8 },
1018 { "msp430f6631",2,8 },
1019 { "msp430f6632",2,8 },
1020 { "msp430f6633",2,8 },
1021 { "msp430f6634",2,8 },
1022 { "msp430f6635",2,8 },
1023 { "msp430f6636",2,8 },
1024 { "msp430f6637",2,8 },
1025 { "msp430f6638",2,8 },
1026 { "msp430f6658",2,8 },
1027 { "msp430f6659",2,8 },
1028 { "msp430f6720",2,8 },
1029 { "msp430f6720a",2,8 },
1030 { "msp430f6721",2,8 },
1031 { "msp430f6721a",2,8 },
1032 { "msp430f6723",2,8 },
1033 { "msp430f6723a",2,8 },
1034 { "msp430f6724",2,8 },
1035 { "msp430f6724a",2,8 },
1036 { "msp430f6725",2,8 },
1037 { "msp430f6725a",2,8 },
1038 { "msp430f6726",2,8 },
1039 { "msp430f6726a",2,8 },
1040 { "msp430f6730",2,8 },
1041 { "msp430f6730a",2,8 },
1042 { "msp430f6731",2,8 },
1043 { "msp430f6731a",2,8 },
1044 { "msp430f6733",2,8 },
1045 { "msp430f6733a",2,8 },
1046 { "msp430f6734",2,8 },
1047 { "msp430f6734a",2,8 },
1048 { "msp430f6735",2,8 },
1049 { "msp430f6735a",2,8 },
1050 { "msp430f6736",2,8 },
1051 { "msp430f6736a",2,8 },
1052 { "msp430f6745",2,8 },
1053 { "msp430f67451",2,8 },
1054 { "msp430f67451a",2,8 },
1055 { "msp430f6745a",2,8 },
1056 { "msp430f6746",2,8 },
1057 { "msp430f67461",2,8 },
1058 { "msp430f67461a",2,8 },
1059 { "msp430f6746a",2,8 },
1060 { "msp430f6747",2,8 },
1061 { "msp430f67471",2,8 },
1062 { "msp430f67471a",2,8 },
1063 { "msp430f6747a",2,8 },
1064 { "msp430f6748",2,8 },
1065 { "msp430f67481",2,8 },
1066 { "msp430f67481a",2,8 },
1067 { "msp430f6748a",2,8 },
1068 { "msp430f6749",2,8 },
1069 { "msp430f67491",2,8 },
1070 { "msp430f67491a",2,8 },
1071 { "msp430f6749a",2,8 },
1072 { "msp430f67621",2,8 },
1073 { "msp430f67621a",2,8 },
1074 { "msp430f67641",2,8 },
1075 { "msp430f67641a",2,8 },
1076 { "msp430f6765",2,8 },
1077 { "msp430f67651",2,8 },
1078 { "msp430f67651a",2,8 },
1079 { "msp430f6765a",2,8 },
1080 { "msp430f6766",2,8 },
1081 { "msp430f67661",2,8 },
1082 { "msp430f67661a",2,8 },
1083 { "msp430f6766a",2,8 },
1084 { "msp430f6767",2,8 },
1085 { "msp430f67671",2,8 },
1086 { "msp430f67671a",2,8 },
1087 { "msp430f6767a",2,8 },
1088 { "msp430f6768",2,8 },
1089 { "msp430f67681",2,8 },
1090 { "msp430f67681a",2,8 },
1091 { "msp430f6768a",2,8 },
1092 { "msp430f6769",2,8 },
1093 { "msp430f67691",2,8 },
1094 { "msp430f67691a",2,8 },
1095 { "msp430f6769a",2,8 },
1096 { "msp430f6775",2,8 },
1097 { "msp430f67751",2,8 },
1098 { "msp430f67751a",2,8 },
1099 { "msp430f6775a",2,8 },
1100 { "msp430f6776",2,8 },
1101 { "msp430f67761",2,8 },
1102 { "msp430f67761a",2,8 },
1103 { "msp430f6776a",2,8 },
1104 { "msp430f6777",2,8 },
1105 { "msp430f67771",2,8 },
1106 { "msp430f67771a",2,8 },
1107 { "msp430f6777a",2,8 },
1108 { "msp430f6778",2,8 },
1109 { "msp430f67781",2,8 },
1110 { "msp430f67781a",2,8 },
1111 { "msp430f6778a",2,8 },
1112 { "msp430f6779",2,8 },
1113 { "msp430f67791",2,8 },
1114 { "msp430f67791a",2,8 },
1115 { "msp430f6779a",2,8 },
1116 { "msp430fe423",0,0 },
1117 { "msp430fe4232",0,0 },
1118 { "msp430fe423a",0,0 },
1119 { "msp430fe4242",0,0 },
1120 { "msp430fe425",0,0 },
1121 { "msp430fe4252",0,0 },
1122 { "msp430fe425a",0,0 },
1123 { "msp430fe427",0,0 },
1124 { "msp430fe4272",0,0 },
1125 { "msp430fe427a",0,0 },
1126 { "msp430fg4250",0,0 },
1127 { "msp430fg4260",0,0 },
1128 { "msp430fg4270",0,0 },
1129 { "msp430fg437",0,0 },
1130 { "msp430fg438",0,0 },
1131 { "msp430fg439",0,0 },
1132 { "msp430fg4616",1,1 },
1133 { "msp430fg4617",1,1 },
1134 { "msp430fg4618",1,1 },
1135 { "msp430fg4619",1,1 },
1136 { "msp430fg477",0,0 },
1137 { "msp430fg478",0,0 },
1138 { "msp430fg479",0,0 },
1139 { "msp430fg6425",2,8 },
1140 { "msp430fg6426",2,8 },
1141 { "msp430fg6625",2,8 },
1142 { "msp430fg6626",2,8 },
1143 { "msp430fr2032",2,0 },
1144 { "msp430fr2033",2,0 },
1145 { "msp430fr2110",2,0 },
1146 { "msp430fr2111",2,0 },
1147 { "msp430fr2310",2,0 },
1148 { "msp430fr2311",2,0 },
1149 { "msp430fr2433",2,8 },
1150 { "msp430fr2532",2,8 },
1151 { "msp430fr2533",2,8 },
1152 { "msp430fr2632",2,8 },
1153 { "msp430fr2633",2,8 },
1154 { "msp430fr2xx_4xxgeneric",2,8 },
1155 { "msp430fr4131",2,0 },
1156 { "msp430fr4132",2,0 },
1157 { "msp430fr4133",2,0 },
1158 { "msp430fr5720",2,8 },
1159 { "msp430fr5721",2,8 },
1160 { "msp430fr5722",2,8 },
1161 { "msp430fr5723",2,8 },
1162 { "msp430fr5724",2,8 },
1163 { "msp430fr5725",2,8 },
1164 { "msp430fr5726",2,8 },
1165 { "msp430fr5727",2,8 },
1166 { "msp430fr5728",2,8 },
1167 { "msp430fr5729",2,8 },
1168 { "msp430fr5730",2,8 },
1169 { "msp430fr5731",2,8 },
1170 { "msp430fr5732",2,8 },
1171 { "msp430fr5733",2,8 },
1172 { "msp430fr5734",2,8 },
1173 { "msp430fr5735",2,8 },
1174 { "msp430fr5736",2,8 },
1175 { "msp430fr5737",2,8 },
1176 { "msp430fr5738",2,8 },
1177 { "msp430fr5739",2,8 },
1178 { "msp430fr57xxgeneric",2,8 },
1179 { "msp430fr5847",2,8 },
1180 { "msp430fr58471",2,8 },
1181 { "msp430fr5848",2,8 },
1182 { "msp430fr5849",2,8 },
1183 { "msp430fr5857",2,8 },
1184 { "msp430fr5858",2,8 },
1185 { "msp430fr5859",2,8 },
1186 { "msp430fr5867",2,8 },
1187 { "msp430fr58671",2,8 },
1188 { "msp430fr5868",2,8 },
1189 { "msp430fr5869",2,8 },
1190 { "msp430fr5870",2,8 },
1191 { "msp430fr5872",2,8 },
1192 { "msp430fr58721",2,8 },
1193 { "msp430fr5887",2,8 },
1194 { "msp430fr5888",2,8 },
1195 { "msp430fr5889",2,8 },
1196 { "msp430fr58891",2,8 },
1197 { "msp430fr5922",2,8 },
1198 { "msp430fr59221",2,8 },
1199 { "msp430fr5947",2,8 },
1200 { "msp430fr59471",2,8 },
1201 { "msp430fr5948",2,8 },
1202 { "msp430fr5949",2,8 },
1203 { "msp430fr5957",2,8 },
1204 { "msp430fr5958",2,8 },
1205 { "msp430fr5959",2,8 },
1206 { "msp430fr5962",2,8 },
1207 { "msp430fr5964",2,8 },
1208 { "msp430fr5967",2,8 },
1209 { "msp430fr5968",2,8 },
1210 { "msp430fr5969",2,8 },
1211 { "msp430fr59691",2,8 },
1212 { "msp430fr5970",2,8 },
1213 { "msp430fr5972",2,8 },
1214 { "msp430fr59721",2,8 },
1215 { "msp430fr5986",2,8 },
1216 { "msp430fr5987",2,8 },
1217 { "msp430fr5988",2,8 },
1218 { "msp430fr5989",2,8 },
1219 { "msp430fr59891",2,8 },
1220 { "msp430fr5992",2,8 },
1221 { "msp430fr5994",2,8 },
1222 { "msp430fr59941",2,8 },
1223 { "msp430fr5xx_6xxgeneric",2,8 },
1224 { "msp430fr6820",2,8 },
1225 { "msp430fr6822",2,8 },
1226 { "msp430fr68221",2,8 },
1227 { "msp430fr6870",2,8 },
1228 { "msp430fr6872",2,8 },
1229 { "msp430fr68721",2,8 },
1230 { "msp430fr6877",2,8 },
1231 { "msp430fr6879",2,8 },
1232 { "msp430fr68791",2,8 },
1233 { "msp430fr6887",2,8 },
1234 { "msp430fr6888",2,8 },
1235 { "msp430fr6889",2,8 },
1236 { "msp430fr68891",2,8 },
1237 { "msp430fr6920",2,8 },
1238 { "msp430fr6922",2,8 },
1239 { "msp430fr69221",2,8 },
1240 { "msp430fr6927",2,8 },
1241 { "msp430fr69271",2,8 },
1242 { "msp430fr6928",2,8 },
1243 { "msp430fr6970",2,8 },
1244 { "msp430fr6972",2,8 },
1245 { "msp430fr69721",2,8 },
1246 { "msp430fr6977",2,8 },
1247 { "msp430fr6979",2,8 },
1248 { "msp430fr69791",2,8 },
1249 { "msp430fr6987",2,8 },
1250 { "msp430fr6988",2,8 },
1251 { "msp430fr6989",2,8 },
1252 { "msp430fr69891",2,8 },
1253 { "msp430fw423",0,0 },
1254 { "msp430fw425",0,0 },
1255 { "msp430fw427",0,0 },
1256 { "msp430fw428",0,0 },
1257 { "msp430fw429",0,0 },
1258 { "msp430g2001",0,0 },
1259 { "msp430g2101",0,0 },
1260 { "msp430g2102",0,0 },
1261 { "msp430g2111",0,0 },
1262 { "msp430g2112",0,0 },
1263 { "msp430g2113",0,0 },
1264 { "msp430g2121",0,0 },
1265 { "msp430g2131",0,0 },
1266 { "msp430g2132",0,0 },
1267 { "msp430g2152",0,0 },
1268 { "msp430g2153",0,0 },
1269 { "msp430g2201",0,0 },
1270 { "msp430g2202",0,0 },
1271 { "msp430g2203",0,0 },
1272 { "msp430g2210",0,0 },
1273 { "msp430g2211",0,0 },
1274 { "msp430g2212",0,0 },
1275 { "msp430g2213",0,0 },
1276 { "msp430g2221",0,0 },
1277 { "msp430g2230",0,0 },
1278 { "msp430g2231",0,0 },
1279 { "msp430g2232",0,0 },
1280 { "msp430g2233",0,0 },
1281 { "msp430g2252",0,0 },
1282 { "msp430g2253",0,0 },
1283 { "msp430g2302",0,0 },
1284 { "msp430g2303",0,0 },
1285 { "msp430g2312",0,0 },
1286 { "msp430g2313",0,0 },
1287 { "msp430g2332",0,0 },
1288 { "msp430g2333",0,0 },
1289 { "msp430g2352",0,0 },
1290 { "msp430g2353",0,0 },
1291 { "msp430g2402",0,0 },
1292 { "msp430g2403",0,0 },
1293 { "msp430g2412",0,0 },
1294 { "msp430g2413",0,0 },
1295 { "msp430g2432",0,0 },
1296 { "msp430g2433",0,0 },
1297 { "msp430g2444",0,0 },
1298 { "msp430g2452",0,0 },
1299 { "msp430g2453",0,0 },
1300 { "msp430g2513",0,0 },
1301 { "msp430g2533",0,0 },
1302 { "msp430g2544",0,0 },
1303 { "msp430g2553",0,0 },
1304 { "msp430g2744",0,0 },
1305 { "msp430g2755",0,0 },
1306 { "msp430g2855",0,0 },
1307 { "msp430g2955",0,0 },
1308 { "msp430i2020",0,2 },
1309 { "msp430i2021",0,2 },
1310 { "msp430i2030",0,2 },
1311 { "msp430i2031",0,2 },
1312 { "msp430i2040",0,2 },
1313 { "msp430i2041",0,2 },
1314 { "msp430i2xxgeneric",0,2 },
1315 { "msp430l092",0,0 },
1316 { "msp430p112",0,0 },
1317 { "msp430p313",0,0 },
1318 { "msp430p315",0,0 },
1319 { "msp430p315s",0,0 },
1320 { "msp430p325",0,0 },
1321 { "msp430p337",0,1 },
1322 { "msp430sl5438a",2,8 },
1323 { "msp430tch5e",0,0 },
1324 { "msp430xgeneric",2,8 },
1325 { "rf430f5144",2,8 },
1326 { "rf430f5155",2,8 },
1327 { "rf430f5175",2,8 },
1328 { "rf430frl152h",0,0 },
1329 { "rf430frl152h_rom",0,0 },
1330 { "rf430frl153h",0,0 },
1331 { "rf430frl153h_rom",0,0 },
1332 { "rf430frl154h",0,0 },
1333 { "rf430frl154h_rom",0,0 }
1334 };
1335
1336 int
1337 md_parse_option (int c, const char * arg)
1338 {
1339 switch (c)
1340 {
1341 case OPTION_SILICON_ERRATA:
1342 case OPTION_SILICON_ERRATA_WARN:
1343 {
1344 signed int i;
1345 const struct
1346 {
1347 const char * name;
1348 unsigned int length;
1349 unsigned int bitfield;
1350 } erratas[] =
1351 {
1352 { STRING_COMMA_LEN ("cpu4"), SILICON_ERRATA_CPU4 },
1353 { STRING_COMMA_LEN ("cpu8"), SILICON_ERRATA_CPU8 },
1354 { STRING_COMMA_LEN ("cpu11"), SILICON_ERRATA_CPU11 },
1355 { STRING_COMMA_LEN ("cpu12"), SILICON_ERRATA_CPU12 },
1356 { STRING_COMMA_LEN ("cpu13"), SILICON_ERRATA_CPU13 },
1357 { STRING_COMMA_LEN ("cpu19"), SILICON_ERRATA_CPU19 },
1358 };
1359
1360 do
1361 {
1362 for (i = ARRAY_SIZE (erratas); i--;)
1363 if (strncasecmp (arg, erratas[i].name, erratas[i].length) == 0)
1364 {
1365 if (c == OPTION_SILICON_ERRATA)
1366 silicon_errata_fix |= erratas[i].bitfield;
1367 else
1368 silicon_errata_warn |= erratas[i].bitfield;
1369 arg += erratas[i].length;
1370 break;
1371 }
1372 if (i < 0)
1373 {
1374 as_warn (_("Unrecognised CPU errata name starting here: %s"), arg);
1375 break;
1376 }
1377 if (*arg == 0)
1378 break;
1379 if (*arg != ',')
1380 as_warn (_("Expecting comma after CPU errata name, not: %s"), arg);
1381 else
1382 arg ++;
1383 }
1384 while (*arg != 0);
1385 }
1386 return 1;
1387
1388 case OPTION_MMCU:
1389 if (arg == NULL)
1390 as_fatal (_("MCU option requires a name\n"));
1391
1392 if (strcasecmp ("msp430", arg) == 0)
1393 selected_isa = MSP_ISA_430;
1394 else if (strcasecmp ("msp430xv2", arg) == 0)
1395 selected_isa = MSP_ISA_430Xv2;
1396 else if (strcasecmp ("msp430x", arg) == 0)
1397 selected_isa = MSP_ISA_430X;
1398 else
1399 {
1400 int i;
1401
1402 for (i = ARRAY_SIZE (msp430_mcu_data); i--;)
1403 if (strcasecmp (msp430_mcu_data[i].name, arg) == 0)
1404 {
1405 switch (msp430_mcu_data[i].revision)
1406 {
1407 case 0: selected_isa = MSP_ISA_430; break;
1408 case 1: selected_isa = MSP_ISA_430X; break;
1409 case 2: selected_isa = MSP_ISA_430Xv2; break;
1410 }
1411 break;
1412 }
1413 }
1414 /* It is not an error if we do not match the MCU name. */
1415 return 1;
1416
1417 case OPTION_MCPU:
1418 if (strcmp (arg, "430") == 0
1419 || strcasecmp (arg, "msp430") == 0)
1420 selected_isa = MSP_ISA_430;
1421 else if (strcasecmp (arg, "430x") == 0
1422 || strcasecmp (arg, "msp430x") == 0)
1423 selected_isa = MSP_ISA_430X;
1424 else if (strcasecmp (arg, "430xv2") == 0
1425 || strcasecmp (arg, "msp430xv2") == 0)
1426 selected_isa = MSP_ISA_430Xv2;
1427 else
1428 as_fatal (_("unrecognised argument to -mcpu option '%s'"), arg);
1429 return 1;
1430
1431 case OPTION_RELAX:
1432 msp430_enable_relax = 1;
1433 return 1;
1434
1435 case OPTION_POLYMORPHS:
1436 msp430_enable_polys = 1;
1437 return 1;
1438
1439 case OPTION_LARGE:
1440 large_model = TRUE;
1441 return 1;
1442
1443 case OPTION_NO_INTR_NOPS:
1444 gen_interrupt_nops = FALSE;
1445 return 1;
1446 case OPTION_INTR_NOPS:
1447 gen_interrupt_nops = TRUE;
1448 return 1;
1449
1450 case OPTION_WARN_INTR_NOPS:
1451 warn_interrupt_nops = TRUE;
1452 return 1;
1453 case OPTION_NO_WARN_INTR_NOPS:
1454 warn_interrupt_nops = FALSE;
1455 return 1;
1456
1457 case OPTION_MOVE_DATA:
1458 move_data = TRUE;
1459 return 1;
1460
1461 case OPTION_DATA_REGION:
1462 if (strcmp (arg, "upper") == 0
1463 || strcmp (arg, "either") == 0)
1464 upper_data_region_in_use = TRUE;
1465 return 1;
1466 }
1467
1468 return 0;
1469 }
1470
1471 /* The intention here is to have the mere presence of these sections
1472 cause the object to have a reference to a well-known symbol. This
1473 reference pulls in the bits of the runtime (crt0) that initialize
1474 these sections. Thus, for example, the startup code to call
1475 memset() to initialize .bss will only be linked in when there is a
1476 non-empty .bss section. Otherwise, the call would exist but have a
1477 zero length parameter, which is a waste of memory and cycles.
1478
1479 The code which initializes these sections should have a global
1480 label for these symbols, and should be marked with KEEP() in the
1481 linker script. */
1482
1483 static void
1484 msp430_make_init_symbols (const char * name)
1485 {
1486 if (strncmp (name, ".bss", 4) == 0
1487 || strncmp (name, ".gnu.linkonce.b.", 16) == 0)
1488 (void) symbol_find_or_make ("__crt0_init_bss");
1489
1490 if (strncmp (name, ".data", 5) == 0
1491 || strncmp (name, ".gnu.linkonce.d.", 16) == 0)
1492 (void) symbol_find_or_make ("__crt0_movedata");
1493
1494 /* Note - data assigned to the .either.data section may end up being
1495 placed in the .upper.data section if the .lower.data section is
1496 full. Hence the need to define the crt0 symbol.
1497 The linker may create upper or either data sections, even when none exist
1498 at the moment, so use the value of the data-region flag to determine if
1499 the symbol is needed. */
1500 if (strncmp (name, ".either.data", 12) == 0
1501 || strncmp (name, ".upper.data", 11) == 0
1502 || upper_data_region_in_use)
1503 (void) symbol_find_or_make ("__crt0_move_highdata");
1504
1505 /* See note about .either.data above. */
1506 if (strncmp (name, ".upper.bss", 10) == 0
1507 || strncmp (name, ".either.bss", 11) == 0
1508 || upper_data_region_in_use)
1509 (void) symbol_find_or_make ("__crt0_init_highbss");
1510 }
1511
1512 static void
1513 msp430_section (int arg)
1514 {
1515 char * saved_ilp = input_line_pointer;
1516 const char * name = obj_elf_section_name ();
1517
1518 msp430_make_init_symbols (name);
1519
1520 input_line_pointer = saved_ilp;
1521 obj_elf_section (arg);
1522 }
1523
1524 void
1525 msp430_frob_section (asection *sec)
1526 {
1527 const char *name = sec->name;
1528
1529 if (sec->size == 0)
1530 return;
1531
1532 msp430_make_init_symbols (name);
1533 }
1534
1535 static void
1536 msp430_lcomm (int ignore ATTRIBUTE_UNUSED)
1537 {
1538 symbolS *symbolP = s_comm_internal (0, s_lcomm_internal);
1539
1540 if (symbolP)
1541 symbol_get_bfdsym (symbolP)->flags |= BSF_OBJECT;
1542 (void) symbol_find_or_make ("__crt0_init_bss");
1543 }
1544
1545 static void
1546 msp430_comm (int needs_align)
1547 {
1548 s_comm_internal (needs_align, elf_common_parse);
1549 (void) symbol_find_or_make ("__crt0_init_bss");
1550 }
1551
1552 static void
1553 msp430_refsym (int arg ATTRIBUTE_UNUSED)
1554 {
1555 char sym_name[1024];
1556 input_line_pointer = extract_word (input_line_pointer, sym_name, 1024);
1557
1558 (void) symbol_find_or_make (sym_name);
1559 }
1560
1561 const pseudo_typeS md_pseudo_table[] =
1562 {
1563 {"arch", msp430_set_arch, OPTION_MMCU},
1564 {"cpu", msp430_set_arch, OPTION_MCPU},
1565 {"profiler", msp430_profiler, 0},
1566 {"section", msp430_section, 0},
1567 {"section.s", msp430_section, 0},
1568 {"sect", msp430_section, 0},
1569 {"sect.s", msp430_section, 0},
1570 {"pushsection", msp430_section, 1},
1571 {"refsym", msp430_refsym, 0},
1572 {"comm", msp430_comm, 0},
1573 {"lcomm", msp430_lcomm, 0},
1574 {NULL, NULL, 0}
1575 };
1576
1577 const char *md_shortopts = "mm:,mP,mQ,ml,mN,mn,my,mY";
1578
1579 struct option md_longopts[] =
1580 {
1581 {"msilicon-errata", required_argument, NULL, OPTION_SILICON_ERRATA},
1582 {"msilicon-errata-warn", required_argument, NULL, OPTION_SILICON_ERRATA_WARN},
1583 {"mmcu", required_argument, NULL, OPTION_MMCU},
1584 {"mcpu", required_argument, NULL, OPTION_MCPU},
1585 {"mP", no_argument, NULL, OPTION_POLYMORPHS},
1586 {"mQ", no_argument, NULL, OPTION_RELAX},
1587 {"ml", no_argument, NULL, OPTION_LARGE},
1588 {"mN", no_argument, NULL, OPTION_NO_INTR_NOPS},
1589 {"mn", no_argument, NULL, OPTION_INTR_NOPS},
1590 {"mY", no_argument, NULL, OPTION_NO_WARN_INTR_NOPS},
1591 {"my", no_argument, NULL, OPTION_WARN_INTR_NOPS},
1592 {"md", no_argument, NULL, OPTION_MOVE_DATA},
1593 {"mdata-region", required_argument, NULL, OPTION_DATA_REGION},
1594 {NULL, no_argument, NULL, 0}
1595 };
1596
1597 size_t md_longopts_size = sizeof (md_longopts);
1598
1599 void
1600 md_show_usage (FILE * stream)
1601 {
1602 fprintf (stream,
1603 _("MSP430 options:\n"
1604 " -mmcu=<msp430-name> - select microcontroller type\n"
1605 " -mcpu={430|430x|430xv2} - select microcontroller architecture\n"));
1606 fprintf (stream,
1607 _(" -msilicon-errata=<name>[,<name>...] - enable fixups for silicon errata\n"
1608 " -msilicon-errata-warn=<name>[,<name>...] - warn when a fixup might be needed\n"
1609 " supported errata names: cpu4, cpu8, cpu11, cpu12, cpu13, cpu19\n"));
1610 fprintf (stream,
1611 _(" -mQ - enable relaxation at assembly time. DANGEROUS!\n"
1612 " -mP - enable polymorph instructions\n"));
1613 fprintf (stream,
1614 _(" -ml - enable large code model\n"));
1615 fprintf (stream,
1616 _(" -mN - do not insert NOPs after changing interrupts (default)\n"));
1617 fprintf (stream,
1618 _(" -mn - insert a NOP after changing interrupts\n"));
1619 fprintf (stream,
1620 _(" -mY - do not warn about missing NOPs after changing interrupts\n"));
1621 fprintf (stream,
1622 _(" -my - warn about missing NOPs after changing interrupts (default)\n"));
1623 fprintf (stream,
1624 _(" -md - Force copying of data from ROM to RAM at startup\n"));
1625 fprintf (stream,
1626 _(" -mdata-region={none|lower|upper|either} - select region data will be\n"
1627 " placed in.\n"));
1628 }
1629
1630 symbolS *
1631 md_undefined_symbol (char * name ATTRIBUTE_UNUSED)
1632 {
1633 return NULL;
1634 }
1635
1636 static char *
1637 extract_cmd (char * from, char * to, int limit)
1638 {
1639 int size = 0;
1640
1641 while (*from && ! ISSPACE (*from) && *from != '.' && limit > size)
1642 {
1643 *(to + size) = *from;
1644 from++;
1645 size++;
1646 }
1647
1648 *(to + size) = 0;
1649
1650 return from;
1651 }
1652
1653 const char *
1654 md_atof (int type, char * litP, int * sizeP)
1655 {
1656 return ieee_md_atof (type, litP, sizeP, FALSE);
1657 }
1658
1659 void
1660 md_begin (void)
1661 {
1662 struct msp430_opcode_s * opcode;
1663 msp430_hash = hash_new ();
1664
1665 for (opcode = msp430_opcodes; opcode->name; opcode++)
1666 hash_insert (msp430_hash, opcode->name, (char *) opcode);
1667
1668 bfd_set_arch_mach (stdoutput, TARGET_ARCH,
1669 target_is_430x () ? bfd_mach_msp430x : bfd_mach_msp11);
1670
1671 /* Set linkrelax here to avoid fixups in most sections. */
1672 linkrelax = 1;
1673 }
1674
1675 /* Returns the register number equivalent to the string T.
1676 Returns -1 if there is no such register.
1677 Skips a leading 'r' or 'R' character if there is one.
1678 Handles the register aliases PC and SP. */
1679
1680 static signed int
1681 check_reg (char * t)
1682 {
1683 signed int val;
1684
1685 if (t == NULL)
1686 return -1;
1687
1688 if (*t == 'r' || *t == 'R')
1689 ++t;
1690
1691 if (strncasecmp (t, "pc", 2) == 0)
1692 return 0;
1693
1694 if (strncasecmp (t, "sp", 2) == 0)
1695 return 1;
1696
1697 if (strncasecmp (t, "sr", 2) == 0)
1698 return 2;
1699
1700 if (*t == '0')
1701 return 0;
1702
1703 val = atoi (t);
1704
1705 if (val < 1 || val > 15)
1706 return -1;
1707
1708 return val;
1709 }
1710
1711 static int
1712 msp430_srcoperand (struct msp430_operand_s * op,
1713 char * l,
1714 int bin,
1715 bfd_boolean * imm_op,
1716 bfd_boolean allow_20bit_values,
1717 bfd_boolean constants_allowed)
1718 {
1719 char * end;
1720 char *__tl = l;
1721
1722 /* Check if an immediate #VALUE. The hash sign should be only at the beginning! */
1723 if (*l == '#')
1724 {
1725 char *h = l;
1726 int vshift = -1;
1727 int rval = 0;
1728
1729 /* Check if there is:
1730 llo(x) - least significant 16 bits, x &= 0xffff
1731 lhi(x) - x = (x >> 16) & 0xffff,
1732 hlo(x) - x = (x >> 32) & 0xffff,
1733 hhi(x) - x = (x >> 48) & 0xffff
1734 The value _MUST_ be constant expression: #hlo(1231231231). */
1735
1736 *imm_op = TRUE;
1737
1738 if (strncasecmp (h, "#llo(", 5) == 0)
1739 {
1740 vshift = 0;
1741 rval = 3;
1742 }
1743 else if (strncasecmp (h, "#lhi(", 5) == 0)
1744 {
1745 vshift = 1;
1746 rval = 3;
1747 }
1748 else if (strncasecmp (h, "#hlo(", 5) == 0)
1749 {
1750 vshift = 2;
1751 rval = 3;
1752 }
1753 else if (strncasecmp (h, "#hhi(", 5) == 0)
1754 {
1755 vshift = 3;
1756 rval = 3;
1757 }
1758 else if (strncasecmp (h, "#lo(", 4) == 0)
1759 {
1760 vshift = 0;
1761 rval = 2;
1762 }
1763 else if (strncasecmp (h, "#hi(", 4) == 0)
1764 {
1765 vshift = 1;
1766 rval = 2;
1767 }
1768
1769 op->reg = 0; /* Reg PC. */
1770 op->am = 3;
1771 op->ol = 1; /* Immediate will follow an instruction. */
1772 __tl = h + 1 + rval;
1773 op->mode = OP_EXP;
1774 op->vshift = vshift;
1775
1776 end = parse_exp (__tl, &(op->exp));
1777 if (end != NULL && *end != 0 && *end != ')' )
1778 {
1779 as_bad (_("extra characters '%s' at end of immediate expression '%s'"), end, l);
1780 return 1;
1781 }
1782 if (op->exp.X_op == O_constant)
1783 {
1784 int x = op->exp.X_add_number;
1785
1786 if (vshift == 0)
1787 {
1788 x = x & 0xffff;
1789 op->exp.X_add_number = x;
1790 }
1791 else if (vshift == 1)
1792 {
1793 x = (x >> 16) & 0xffff;
1794 op->exp.X_add_number = x;
1795 op->vshift = 0;
1796 }
1797 else if (vshift > 1)
1798 {
1799 if (x < 0)
1800 op->exp.X_add_number = -1;
1801 else
1802 op->exp.X_add_number = 0; /* Nothing left. */
1803 x = op->exp.X_add_number;
1804 op->vshift = 0;
1805 }
1806
1807 if (allow_20bit_values)
1808 {
1809 if (op->exp.X_add_number > 0xfffff || op->exp.X_add_number < -524288)
1810 {
1811 as_bad (_("value 0x%x out of extended range."), x);
1812 return 1;
1813 }
1814 }
1815 else if (op->exp.X_add_number > 65535 || op->exp.X_add_number < -32768)
1816 {
1817 as_bad (_("value %d out of range. Use #lo() or #hi()"), x);
1818 return 1;
1819 }
1820
1821 /* Now check constants. */
1822 /* Substitute register mode with a constant generator if applicable. */
1823
1824 if (!allow_20bit_values)
1825 x = (short) x; /* Extend sign. */
1826
1827 if (! constants_allowed)
1828 ;
1829 else if (x == 0)
1830 {
1831 op->reg = 3;
1832 op->am = 0;
1833 op->ol = 0;
1834 op->mode = OP_REG;
1835 }
1836 else if (x == 1)
1837 {
1838 op->reg = 3;
1839 op->am = 1;
1840 op->ol = 0;
1841 op->mode = OP_REG;
1842 }
1843 else if (x == 2)
1844 {
1845 op->reg = 3;
1846 op->am = 2;
1847 op->ol = 0;
1848 op->mode = OP_REG;
1849 }
1850 else if (x == -1)
1851 {
1852 op->reg = 3;
1853 op->am = 3;
1854 op->ol = 0;
1855 op->mode = OP_REG;
1856 }
1857 else if (x == 4)
1858 {
1859 if (bin == 0x1200 && ! target_is_430x ())
1860 {
1861 /* CPU4: The shorter form of PUSH #4 is not supported on MSP430. */
1862 if (silicon_errata_warn & SILICON_ERRATA_CPU4)
1863 as_warn (_("cpu4: not converting PUSH #4 to shorter form"));
1864 /* No need to check silicon_errata_fixes - this fix is always implemented. */
1865 }
1866 else
1867 {
1868 op->reg = 2;
1869 op->am = 2;
1870 op->ol = 0;
1871 op->mode = OP_REG;
1872 }
1873 }
1874 else if (x == 8)
1875 {
1876 if (bin == 0x1200 && ! target_is_430x ())
1877 {
1878 /* CPU4: The shorter form of PUSH #8 is not supported on MSP430. */
1879 if (silicon_errata_warn & SILICON_ERRATA_CPU4)
1880 as_warn (_("cpu4: not converting PUSH #8 to shorter form"));
1881 }
1882 else
1883 {
1884 op->reg = 2;
1885 op->am = 3;
1886 op->ol = 0;
1887 op->mode = OP_REG;
1888 }
1889 }
1890 }
1891 else if (op->exp.X_op == O_symbol)
1892 {
1893 if (vshift > 1)
1894 as_bad (_("error: unsupported #foo() directive used on symbol"));
1895 op->mode = OP_EXP;
1896 }
1897 else if (op->exp.X_op == O_big)
1898 {
1899 short x;
1900
1901 if (vshift != -1)
1902 {
1903 op->exp.X_op = O_constant;
1904 op->exp.X_add_number = 0xffff & generic_bignum[vshift];
1905 x = op->exp.X_add_number;
1906 op->vshift = 0;
1907 }
1908 else
1909 {
1910 as_bad (_
1911 ("unknown expression in operand %s. Use #llo(), #lhi(), #hlo() or #hhi()"),
1912 l);
1913 return 1;
1914 }
1915
1916 if (x == 0)
1917 {
1918 op->reg = 3;
1919 op->am = 0;
1920 op->ol = 0;
1921 op->mode = OP_REG;
1922 }
1923 else if (x == 1)
1924 {
1925 op->reg = 3;
1926 op->am = 1;
1927 op->ol = 0;
1928 op->mode = OP_REG;
1929 }
1930 else if (x == 2)
1931 {
1932 op->reg = 3;
1933 op->am = 2;
1934 op->ol = 0;
1935 op->mode = OP_REG;
1936 }
1937 else if (x == -1)
1938 {
1939 op->reg = 3;
1940 op->am = 3;
1941 op->ol = 0;
1942 op->mode = OP_REG;
1943 }
1944 else if (x == 4)
1945 {
1946 op->reg = 2;
1947 op->am = 2;
1948 op->ol = 0;
1949 op->mode = OP_REG;
1950 }
1951 else if (x == 8)
1952 {
1953 op->reg = 2;
1954 op->am = 3;
1955 op->ol = 0;
1956 op->mode = OP_REG;
1957 }
1958 }
1959 /* Redundant (yet) check. */
1960 else if (op->exp.X_op == O_register)
1961 as_bad
1962 (_("Registers cannot be used within immediate expression [%s]"), l);
1963 else
1964 as_bad (_("unknown operand %s"), l);
1965
1966 return 0;
1967 }
1968
1969 /* Check if absolute &VALUE (assume that we can construct something like ((a&b)<<7 + 25). */
1970 if (*l == '&')
1971 {
1972 char *h = l;
1973
1974 op->reg = 2; /* reg 2 in absolute addr mode. */
1975 op->am = 1; /* mode As == 01 bin. */
1976 op->ol = 1; /* Immediate value followed by instruction. */
1977 __tl = h + 1;
1978 end = parse_exp (__tl, &(op->exp));
1979 if (end != NULL && *end != 0)
1980 {
1981 as_bad (_("extra characters '%s' at the end of absolute operand '%s'"), end, l);
1982 return 1;
1983 }
1984 op->mode = OP_EXP;
1985 op->vshift = 0;
1986 if (op->exp.X_op == O_constant)
1987 {
1988 int x = op->exp.X_add_number;
1989
1990 if (allow_20bit_values)
1991 {
1992 if (x > 0xfffff || x < -(0x7ffff))
1993 {
1994 as_bad (_("value 0x%x out of extended range."), x);
1995 return 1;
1996 }
1997 }
1998 else if (x > 65535 || x < -32768)
1999 {
2000 as_bad (_("value out of range: 0x%x"), x);
2001 return 1;
2002 }
2003 }
2004 else if (op->exp.X_op == O_symbol)
2005 ;
2006 else
2007 {
2008 /* Redundant (yet) check. */
2009 if (op->exp.X_op == O_register)
2010 as_bad
2011 (_("Registers cannot be used within absolute expression [%s]"), l);
2012 else
2013 as_bad (_("unknown expression in operand %s"), l);
2014 return 1;
2015 }
2016 return 0;
2017 }
2018
2019 /* Check if indirect register mode @Rn / postincrement @Rn+. */
2020 if (*l == '@')
2021 {
2022 char *t = l;
2023 char *m = strchr (l, '+');
2024
2025 if (t != l)
2026 {
2027 as_bad (_("unknown addressing mode %s"), l);
2028 return 1;
2029 }
2030
2031 t++;
2032
2033 if ((op->reg = check_reg (t)) == -1)
2034 {
2035 as_bad (_("Bad register name %s"), t);
2036 return 1;
2037 }
2038
2039 op->mode = OP_REG;
2040 op->am = m ? 3 : 2;
2041 op->ol = 0;
2042
2043 /* PC cannot be used in indirect addressing. */
2044 if (target_is_430xv2 () && op->reg == 0)
2045 {
2046 as_bad (_("cannot use indirect addressing with the PC"));
2047 return 1;
2048 }
2049
2050 return 0;
2051 }
2052
2053 /* Check if register indexed X(Rn). */
2054 do
2055 {
2056 char *h = strrchr (l, '(');
2057 char *m = strrchr (l, ')');
2058 char *t;
2059
2060 *imm_op = TRUE;
2061
2062 if (!h)
2063 break;
2064 if (!m)
2065 {
2066 as_bad (_("')' required"));
2067 return 1;
2068 }
2069
2070 t = h;
2071 op->am = 1;
2072 op->ol = 1;
2073
2074 /* Extract a register. */
2075 if ((op->reg = check_reg (t + 1)) == -1)
2076 {
2077 as_bad (_
2078 ("unknown operator %s. Did you mean X(Rn) or #[hl][hl][oi](CONST) ?"),
2079 l);
2080 return 1;
2081 }
2082
2083 if (op->reg == 2)
2084 {
2085 as_bad (_("r2 should not be used in indexed addressing mode"));
2086 return 1;
2087 }
2088
2089 /* Extract constant. */
2090 __tl = l;
2091 *h = 0;
2092 op->mode = OP_EXP;
2093 op->vshift = 0;
2094 end = parse_exp (__tl, &(op->exp));
2095 if (end != NULL && *end != 0)
2096 {
2097 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l);
2098 return 1;
2099 }
2100 if (op->exp.X_op == O_constant)
2101 {
2102 int x = op->exp.X_add_number;
2103
2104 if (allow_20bit_values)
2105 {
2106 if (x > 0xfffff || x < - (0x7ffff))
2107 {
2108 as_bad (_("value 0x%x out of extended range."), x);
2109 return 1;
2110 }
2111 }
2112 else if (x > 65535 || x < -32768)
2113 {
2114 as_bad (_("value out of range: 0x%x"), x);
2115 return 1;
2116 }
2117
2118 if (x == 0)
2119 {
2120 op->mode = OP_REG;
2121 op->am = 2;
2122 op->ol = 0;
2123 return 0;
2124 }
2125
2126 if (op->reg == 1 && (x & 1))
2127 {
2128 if (silicon_errata_fix & SILICON_ERRATA_CPU8)
2129 as_bad (_("CPU8: Stack pointer accessed with an odd offset"));
2130 else if (silicon_errata_warn & SILICON_ERRATA_CPU8)
2131 as_warn (_("CPU8: Stack pointer accessed with an odd offset"));
2132 }
2133 }
2134 else if (op->exp.X_op == O_symbol)
2135 ;
2136 else
2137 {
2138 /* Redundant (yet) check. */
2139 if (op->exp.X_op == O_register)
2140 as_bad
2141 (_("Registers cannot be used as a prefix of indexed expression [%s]"), l);
2142 else
2143 as_bad (_("unknown expression in operand %s"), l);
2144 return 1;
2145 }
2146
2147 return 0;
2148 }
2149 while (0);
2150
2151 /* Possibly register mode 'mov r1,r2'. */
2152 if ((op->reg = check_reg (l)) != -1)
2153 {
2154 op->mode = OP_REG;
2155 op->am = 0;
2156 op->ol = 0;
2157 return 0;
2158 }
2159
2160 /* Symbolic mode 'mov a, b' == 'mov x(pc), y(pc)'. */
2161 op->mode = OP_EXP;
2162 op->reg = 0; /* PC relative... be careful. */
2163 /* An expression starting with a minus sign is a constant, not an address. */
2164 op->am = (*l == '-' ? 3 : 1);
2165 op->ol = 1;
2166 op->vshift = 0;
2167 __tl = l;
2168 end = parse_exp (__tl, &(op->exp));
2169 if (end != NULL && * end != 0)
2170 {
2171 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l);
2172 return 1;
2173 }
2174 return 0;
2175 }
2176
2177
2178 static int
2179 msp430_dstoperand (struct msp430_operand_s * op,
2180 char * l,
2181 int bin,
2182 bfd_boolean allow_20bit_values,
2183 bfd_boolean constants_allowed)
2184 {
2185 int dummy;
2186 int ret = msp430_srcoperand (op, l, bin, & dummy,
2187 allow_20bit_values,
2188 constants_allowed);
2189
2190 if (ret)
2191 return ret;
2192
2193 if (op->am == 2)
2194 {
2195 char *__tl = (char *) "0";
2196
2197 op->mode = OP_EXP;
2198 op->am = 1;
2199 op->ol = 1;
2200 op->vshift = 0;
2201 (void) parse_exp (__tl, &(op->exp));
2202
2203 if (op->exp.X_op != O_constant || op->exp.X_add_number != 0)
2204 {
2205 as_bad (_("Internal bug. Try to use 0(r%d) instead of @r%d"),
2206 op->reg, op->reg);
2207 return 1;
2208 }
2209 return 0;
2210 }
2211
2212 if (op->am > 1)
2213 {
2214 as_bad (_
2215 ("this addressing mode is not applicable for destination operand"));
2216 return 1;
2217 }
2218 return 0;
2219 }
2220
2221 /* Attempt to encode a MOVA instruction with the given operands.
2222 Returns the length of the encoded instruction if successful
2223 or 0 upon failure. If the encoding fails, an error message
2224 will be returned if a pointer is provided. */
2225
2226 static int
2227 try_encode_mova (bfd_boolean imm_op,
2228 int bin,
2229 struct msp430_operand_s * op1,
2230 struct msp430_operand_s * op2,
2231 const char ** error_message_return)
2232 {
2233 short ZEROS = 0;
2234 char *frag;
2235 int where;
2236
2237 /* Only a restricted subset of the normal MSP430 addressing modes
2238 are supported here, so check for the ones that are allowed. */
2239 if (imm_op)
2240 {
2241 if (op1->mode == OP_EXP)
2242 {
2243 if (op2->mode != OP_REG)
2244 {
2245 if (error_message_return != NULL)
2246 * error_message_return = _("expected register as second argument of %s");
2247 return 0;
2248 }
2249
2250 if (op1->am == 3)
2251 {
2252 /* MOVA #imm20, Rdst. */
2253 bin |= 0x80 | op2->reg;
2254 frag = frag_more (4);
2255 where = frag - frag_now->fr_literal;
2256 if (op1->exp.X_op == O_constant)
2257 {
2258 bin |= ((op1->exp.X_add_number >> 16) & 0xf) << 8;
2259 bfd_putl16 ((bfd_vma) bin, frag);
2260 bfd_putl16 (op1->exp.X_add_number & 0xffff, frag + 2);
2261 }
2262 else
2263 {
2264 bfd_putl16 ((bfd_vma) bin, frag);
2265 fix_new_exp (frag_now, where, 4, &(op1->exp), FALSE,
2266 BFD_RELOC_MSP430X_ABS20_ADR_SRC);
2267 bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
2268 }
2269
2270 return 4;
2271 }
2272 else if (op1->am == 1)
2273 {
2274 /* MOVA z16(Rsrc), Rdst. */
2275 bin |= 0x30 | (op1->reg << 8) | op2->reg;
2276 frag = frag_more (4);
2277 where = frag - frag_now->fr_literal;
2278 bfd_putl16 ((bfd_vma) bin, frag);
2279 if (op1->exp.X_op == O_constant)
2280 {
2281 if (op1->exp.X_add_number > 0xffff
2282 || op1->exp.X_add_number < -(0x7fff))
2283 {
2284 if (error_message_return != NULL)
2285 * error_message_return = _("index value too big for %s");
2286 return 0;
2287 }
2288 bfd_putl16 (op1->exp.X_add_number & 0xffff, frag + 2);
2289 }
2290 else
2291 {
2292 bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
2293 fix_new_exp (frag_now, where + 2, 2, &(op1->exp), FALSE,
2294 op1->reg == 0 ?
2295 BFD_RELOC_MSP430X_PCR16 :
2296 BFD_RELOC_MSP430X_ABS16);
2297 }
2298 return 4;
2299 }
2300
2301 if (error_message_return != NULL)
2302 * error_message_return = _("unexpected addressing mode for %s");
2303 return 0;
2304 }
2305 else if (op1->am == 0)
2306 {
2307 /* MOVA Rsrc, ... */
2308 if (op2->mode == OP_REG)
2309 {
2310 bin |= 0xc0 | (op1->reg << 8) | op2->reg;
2311 frag = frag_more (2);
2312 where = frag - frag_now->fr_literal;
2313 bfd_putl16 ((bfd_vma) bin, frag);
2314 return 2;
2315 }
2316 else if (op2->am == 1)
2317 {
2318 if (op2->reg == 2)
2319 {
2320 /* MOVA Rsrc, &abs20. */
2321 bin |= 0x60 | (op1->reg << 8);
2322 frag = frag_more (4);
2323 where = frag - frag_now->fr_literal;
2324 if (op2->exp.X_op == O_constant)
2325 {
2326 bin |= (op2->exp.X_add_number >> 16) & 0xf;
2327 bfd_putl16 ((bfd_vma) bin, frag);
2328 bfd_putl16 (op2->exp.X_add_number & 0xffff, frag + 2);
2329 }
2330 else
2331 {
2332 bfd_putl16 ((bfd_vma) bin, frag);
2333 bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
2334 fix_new_exp (frag_now, where, 4, &(op2->exp), FALSE,
2335 BFD_RELOC_MSP430X_ABS20_ADR_DST);
2336 }
2337 return 4;
2338 }
2339
2340 /* MOVA Rsrc, z16(Rdst). */
2341 bin |= 0x70 | (op1->reg << 8) | op2->reg;
2342 frag = frag_more (4);
2343 where = frag - frag_now->fr_literal;
2344 bfd_putl16 ((bfd_vma) bin, frag);
2345 if (op2->exp.X_op == O_constant)
2346 {
2347 if (op2->exp.X_add_number > 0xffff
2348 || op2->exp.X_add_number < -(0x7fff))
2349 {
2350 if (error_message_return != NULL)
2351 * error_message_return = _("index value too big for %s");
2352 return 0;
2353 }
2354 bfd_putl16 (op2->exp.X_add_number & 0xffff, frag + 2);
2355 }
2356 else
2357 {
2358 bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
2359 fix_new_exp (frag_now, where + 2, 2, &(op2->exp), FALSE,
2360 op2->reg == 0 ?
2361 BFD_RELOC_MSP430X_PCR16 :
2362 BFD_RELOC_MSP430X_ABS16);
2363 }
2364 return 4;
2365 }
2366
2367 if (error_message_return != NULL)
2368 * error_message_return = _("unexpected addressing mode for %s");
2369 return 0;
2370 }
2371 }
2372
2373 /* imm_op == FALSE. */
2374
2375 if (op1->reg == 2 && op1->am == 1 && op1->mode == OP_EXP)
2376 {
2377 /* MOVA &abs20, Rdst. */
2378 if (op2->mode != OP_REG)
2379 {
2380 if (error_message_return != NULL)
2381 * error_message_return = _("expected register as second argument of %s");
2382 return 0;
2383 }
2384
2385 if (op2->reg == 2 || op2->reg == 3)
2386 {
2387 if (error_message_return != NULL)
2388 * error_message_return = _("constant generator destination register found in %s");
2389 return 0;
2390 }
2391
2392 bin |= 0x20 | op2->reg;
2393 frag = frag_more (4);
2394 where = frag - frag_now->fr_literal;
2395 if (op1->exp.X_op == O_constant)
2396 {
2397 bin |= ((op1->exp.X_add_number >> 16) & 0xf) << 8;
2398 bfd_putl16 ((bfd_vma) bin, frag);
2399 bfd_putl16 (op1->exp.X_add_number & 0xffff, frag + 2);
2400 }
2401 else
2402 {
2403 bfd_putl16 ((bfd_vma) bin, frag);
2404 bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
2405 fix_new_exp (frag_now, where, 4, &(op1->exp), FALSE,
2406 BFD_RELOC_MSP430X_ABS20_ADR_SRC);
2407 }
2408 return 4;
2409 }
2410 else if (op1->mode == OP_REG)
2411 {
2412 if (op1->am == 3)
2413 {
2414 /* MOVA @Rsrc+, Rdst. */
2415 if (op2->mode != OP_REG)
2416 {
2417 if (error_message_return != NULL)
2418 * error_message_return = _("expected register as second argument of %s");
2419 return 0;
2420 }
2421
2422 if (op2->reg == 2 || op2->reg == 3)
2423 {
2424 if (error_message_return != NULL)
2425 * error_message_return = _("constant generator destination register found in %s");
2426 return 0;
2427 }
2428
2429 if (op1->reg == 2 || op1->reg == 3)
2430 {
2431 if (error_message_return != NULL)
2432 * error_message_return = _("constant generator source register found in %s");
2433 return 0;
2434 }
2435
2436 bin |= 0x10 | (op1->reg << 8) | op2->reg;
2437 frag = frag_more (2);
2438 where = frag - frag_now->fr_literal;
2439 bfd_putl16 ((bfd_vma) bin, frag);
2440 return 2;
2441 }
2442 else if (op1->am == 2)
2443 {
2444 /* MOVA @Rsrc,Rdst */
2445 if (op2->mode != OP_REG)
2446 {
2447 if (error_message_return != NULL)
2448 * error_message_return = _("expected register as second argument of %s");
2449 return 0;
2450 }
2451
2452 if (op2->reg == 2 || op2->reg == 3)
2453 {
2454 if (error_message_return != NULL)
2455 * error_message_return = _("constant generator destination register found in %s");
2456 return 0;
2457 }
2458
2459 if (op1->reg == 2 || op1->reg == 3)
2460 {
2461 if (error_message_return != NULL)
2462 * error_message_return = _("constant generator source register found in %s");
2463 return 0;
2464 }
2465
2466 bin |= (op1->reg << 8) | op2->reg;
2467 frag = frag_more (2);
2468 where = frag - frag_now->fr_literal;
2469 bfd_putl16 ((bfd_vma) bin, frag);
2470 return 2;
2471 }
2472 }
2473
2474 if (error_message_return != NULL)
2475 * error_message_return = _("unexpected addressing mode for %s");
2476
2477 return 0;
2478 }
2479
2480 #define NOP_CHECK_INTERRUPT (1 << 0)
2481 #define NOP_CHECK_CPU12 (1 << 1)
2482 #define NOP_CHECK_CPU19 (1 << 2)
2483
2484 static signed int check_for_nop = 0;
2485
2486 #define is_opcode(NAME) (strcmp (opcode->name, NAME) == 0)
2487
2488 /* Parse instruction operands.
2489 Return binary opcode. */
2490
2491 static unsigned int
2492 msp430_operands (struct msp430_opcode_s * opcode, char * line)
2493 {
2494 int bin = opcode->bin_opcode; /* Opcode mask. */
2495 int insn_length = 0;
2496 char l1[MAX_OP_LEN], l2[MAX_OP_LEN];
2497 char *frag;
2498 char *end;
2499 int where;
2500 struct msp430_operand_s op1, op2;
2501 int res = 0;
2502 static short ZEROS = 0;
2503 bfd_boolean byte_op, imm_op;
2504 int op_length = 0;
2505 int fmt;
2506 int extended = 0x1800;
2507 bfd_boolean extended_op = FALSE;
2508 bfd_boolean addr_op;
2509 const char * error_message;
2510 static signed int repeat_count = 0;
2511 static bfd_boolean prev_insn_is_nop = FALSE;
2512 bfd_boolean fix_emitted;
2513
2514 /* Opcode is the one from opcodes table
2515 line contains something like
2516 [.w] @r2+, 5(R1)
2517 or
2518 .b @r2+, 5(R1). */
2519
2520 byte_op = FALSE;
2521 addr_op = FALSE;
2522 if (*line == '.')
2523 {
2524 bfd_boolean check = FALSE;
2525 ++ line;
2526
2527 switch (TOLOWER (* line))
2528 {
2529 case 'b':
2530 /* Byte operation. */
2531 bin |= BYTE_OPERATION;
2532 byte_op = TRUE;
2533 check = TRUE;
2534 break;
2535
2536 case 'a':
2537 /* "Address" ops work on 20-bit values. */
2538 addr_op = TRUE;
2539 bin |= BYTE_OPERATION;
2540 check = TRUE;
2541 break;
2542
2543 case 'w':
2544 /* Word operation - this is the default. */
2545 check = TRUE;
2546 break;
2547
2548 case 0:
2549 case ' ':
2550 case '\n':
2551 case '\r':
2552 as_warn (_("no size modifier after period, .w assumed"));
2553 break;
2554
2555 default:
2556 as_bad (_("unrecognised instruction size modifier .%c"),
2557 * line);
2558 return 0;
2559 }
2560
2561 if (check)
2562 {
2563 ++ line;
2564
2565 }
2566 }
2567
2568 if (*line && ! ISSPACE (*line))
2569 {
2570 as_bad (_("junk found after instruction: %s.%s"),
2571 opcode->name, line);
2572 return 0;
2573 }
2574
2575 /* Catch the case where the programmer has used a ".a" size modifier on an
2576 instruction that does not support it. Look for an alternative extended
2577 instruction that has the same name without the period. Eg: "add.a"
2578 becomes "adda". Although this not an officially supported way of
2579 specifying instruction aliases other MSP430 assemblers allow it. So we
2580 support it for compatibility purposes. */
2581 if (addr_op && opcode->fmt >= 0)
2582 {
2583 const char * old_name = opcode->name;
2584 char real_name[32];
2585
2586 sprintf (real_name, "%sa", old_name);
2587 opcode = hash_find (msp430_hash, real_name);
2588 if (opcode == NULL)
2589 {
2590 as_bad (_("instruction %s.a does not exist"), old_name);
2591 return 0;
2592 }
2593 #if 0 /* Enable for debugging. */
2594 as_warn ("treating %s.a as %s", old_name, real_name);
2595 #endif
2596 addr_op = FALSE;
2597 bin = opcode->bin_opcode;
2598 }
2599
2600 if (opcode->fmt != -1
2601 && opcode->insn_opnumb
2602 && (!*line || *line == '\n'))
2603 {
2604 as_bad (ngettext ("instruction %s requires %d operand",
2605 "instruction %s requires %d operands",
2606 opcode->insn_opnumb),
2607 opcode->name, opcode->insn_opnumb);
2608 return 0;
2609 }
2610
2611 memset (l1, 0, sizeof (l1));
2612 memset (l2, 0, sizeof (l2));
2613 memset (&op1, 0, sizeof (op1));
2614 memset (&op2, 0, sizeof (op2));
2615
2616 imm_op = FALSE;
2617
2618 if ((fmt = opcode->fmt) < 0)
2619 {
2620 if (! target_is_430x ())
2621 {
2622 as_bad (_("instruction %s requires MSP430X mcu"),
2623 opcode->name);
2624 return 0;
2625 }
2626
2627 fmt = (-fmt) - 1;
2628 extended_op = TRUE;
2629 }
2630
2631 if (repeat_count)
2632 {
2633 /* If requested set the extended instruction repeat count. */
2634 if (extended_op)
2635 {
2636 if (repeat_count > 0)
2637 extended |= (repeat_count - 1);
2638 else
2639 extended |= (1 << 7) | (- repeat_count);
2640 }
2641 else
2642 as_bad (_("unable to repeat %s insn"), opcode->name);
2643
2644 repeat_count = 0;
2645 }
2646
2647 if (check_for_nop)
2648 {
2649 if (! is_opcode ("nop"))
2650 {
2651 bfd_boolean doit = FALSE;
2652
2653 do
2654 {
2655 switch (check_for_nop & - check_for_nop)
2656 {
2657 case NOP_CHECK_INTERRUPT:
2658 if (warn_interrupt_nops)
2659 {
2660 if (gen_interrupt_nops)
2661 as_warn (_("NOP inserted between two instructions that change interrupt state"));
2662 else
2663 as_warn (_("a NOP might be needed here because of successive changes in interrupt state"));
2664 }
2665
2666 if (gen_interrupt_nops)
2667 /* Emit a NOP between interrupt enable/disable.
2668 See 1.3.4.1 of the MSP430x5xx User Guide. */
2669 doit = TRUE;
2670 break;
2671
2672 case NOP_CHECK_CPU12:
2673 if (silicon_errata_warn & SILICON_ERRATA_CPU12)
2674 as_warn (_("CPU12: CMP/BIT with PC destination ignores next instruction"));
2675
2676 if (silicon_errata_fix & SILICON_ERRATA_CPU12)
2677 doit = TRUE;
2678 break;
2679
2680 case NOP_CHECK_CPU19:
2681 if (silicon_errata_warn & SILICON_ERRATA_CPU19)
2682 as_warn (_("CPU19: Instruction setting CPUOFF must be followed by a NOP"));
2683
2684 if (silicon_errata_fix & SILICON_ERRATA_CPU19)
2685 doit = TRUE;
2686 break;
2687
2688 default:
2689 as_bad (_("internal error: unknown nop check state"));
2690 break;
2691 }
2692 check_for_nop &= ~ (check_for_nop & - check_for_nop);
2693 }
2694 while (check_for_nop);
2695
2696 if (doit)
2697 {
2698 frag = frag_more (2);
2699 bfd_putl16 ((bfd_vma) 0x4303 /* NOP */, frag);
2700 dwarf2_emit_insn (2);
2701 }
2702 }
2703
2704 check_for_nop = 0;
2705 }
2706
2707 switch (fmt)
2708 {
2709 case 0: /* Emulated. */
2710 switch (opcode->insn_opnumb)
2711 {
2712 case 0:
2713 if (is_opcode ("eint"))
2714 {
2715 if (! prev_insn_is_nop)
2716 {
2717 if (gen_interrupt_nops)
2718 {
2719 frag = frag_more (2);
2720 bfd_putl16 ((bfd_vma) 0x4303 /* NOP */, frag);
2721 dwarf2_emit_insn (2);
2722
2723 if (warn_interrupt_nops)
2724 as_warn (_("inserting a NOP before EINT"));
2725 }
2726 else if (warn_interrupt_nops)
2727 as_warn (_("a NOP might be needed before the EINT"));
2728 }
2729 }
2730 else if (is_opcode ("dint"))
2731 check_for_nop |= NOP_CHECK_INTERRUPT;
2732
2733 /* Set/clear bits instructions. */
2734 if (extended_op)
2735 {
2736 if (!addr_op)
2737 extended |= BYTE_OPERATION;
2738
2739 /* Emit the extension word. */
2740 insn_length += 2;
2741 frag = frag_more (2);
2742 bfd_putl16 (extended, frag);
2743 }
2744
2745 insn_length += 2;
2746 frag = frag_more (2);
2747 bfd_putl16 ((bfd_vma) bin, frag);
2748 dwarf2_emit_insn (insn_length);
2749 break;
2750
2751 case 1:
2752 /* Something which works with destination operand. */
2753 line = extract_operand (line, l1, sizeof (l1));
2754 res = msp430_dstoperand (&op1, l1, opcode->bin_opcode, extended_op, TRUE);
2755 if (res)
2756 break;
2757
2758 bin |= (op1.reg | (op1.am << 7));
2759
2760 /* If the PC is the destination... */
2761 if (op1.am == 0 && op1.reg == 0
2762 /* ... and the opcode alters the SR. */
2763 && !(is_opcode ("bic") || is_opcode ("bis") || is_opcode ("mov")
2764 || is_opcode ("bicx") || is_opcode ("bisx") || is_opcode ("movx")))
2765 {
2766 if (silicon_errata_fix & SILICON_ERRATA_CPU11)
2767 as_bad (_("CPU11: PC is destination of SR altering instruction"));
2768 else if (silicon_errata_warn & SILICON_ERRATA_CPU11)
2769 as_warn (_("CPU11: PC is destination of SR altering instruction"));
2770 }
2771
2772 /* If the status register is the destination... */
2773 if (op1.am == 0 && op1.reg == 2
2774 /* ... and the opcode alters the SR. */
2775 && (is_opcode ("adc") || is_opcode ("dec") || is_opcode ("decd")
2776 || is_opcode ("inc") || is_opcode ("incd") || is_opcode ("inv")
2777 || is_opcode ("sbc") || is_opcode ("sxt")
2778 || is_opcode ("adcx") || is_opcode ("decx") || is_opcode ("decdx")
2779 || is_opcode ("incx") || is_opcode ("incdx") || is_opcode ("invx")
2780 || is_opcode ("sbcx")
2781 ))
2782 {
2783 if (silicon_errata_fix & SILICON_ERRATA_CPU13)
2784 as_bad (_("CPU13: SR is destination of SR altering instruction"));
2785 else if (silicon_errata_warn & SILICON_ERRATA_CPU13)
2786 as_warn (_("CPU13: SR is destination of SR altering instruction"));
2787 }
2788
2789 if (is_opcode ("clr") && bin == 0x4302 /* CLR R2*/)
2790 check_for_nop |= NOP_CHECK_INTERRUPT;
2791
2792 /* Compute the entire instruction length, in bytes. */
2793 op_length = (extended_op ? 2 : 0) + 2 + (op1.ol * 2);
2794 insn_length += op_length;
2795 frag = frag_more (op_length);
2796 where = frag - frag_now->fr_literal;
2797
2798 if (extended_op)
2799 {
2800 if (!addr_op)
2801 extended |= BYTE_OPERATION;
2802
2803 if (op1.ol != 0 && ((extended & 0xf) != 0))
2804 {
2805 as_bad (_("repeat instruction used with non-register mode instruction"));
2806 extended &= ~ 0xf;
2807 }
2808
2809 if (op1.mode == OP_EXP)
2810 {
2811 if (op1.exp.X_op == O_constant)
2812 extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7;
2813
2814 else if (op1.reg || op1.am == 3) /* Not PC relative. */
2815 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE,
2816 BFD_RELOC_MSP430X_ABS20_EXT_SRC);
2817 else
2818 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE,
2819 BFD_RELOC_MSP430X_PCR20_EXT_SRC);
2820 }
2821
2822 /* Emit the extension word. */
2823 bfd_putl16 (extended, frag);
2824 frag += 2;
2825 where += 2;
2826 }
2827
2828 bfd_putl16 ((bfd_vma) bin, frag);
2829 frag += 2;
2830 where += 2;
2831
2832 if (op1.mode == OP_EXP)
2833 {
2834 if (op1.exp.X_op == O_constant)
2835 {
2836 bfd_putl16 (op1.exp.X_add_number & 0xffff, frag);
2837 }
2838 else
2839 {
2840 bfd_putl16 ((bfd_vma) ZEROS, frag);
2841
2842 if (!extended_op)
2843 {
2844 if (op1.reg)
2845 fix_new_exp (frag_now, where, 2,
2846 &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1));
2847 else
2848 fix_new_exp (frag_now, where, 2,
2849 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
2850 }
2851 }
2852 }
2853
2854 dwarf2_emit_insn (insn_length);
2855 break;
2856
2857 case 2:
2858 /* Shift instruction. */
2859 line = extract_operand (line, l1, sizeof (l1));
2860 strncpy (l2, l1, sizeof (l2));
2861 l2[sizeof (l2) - 1] = '\0';
2862 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, extended_op, TRUE);
2863 res += msp430_dstoperand (&op2, l2, opcode->bin_opcode, extended_op, TRUE);
2864
2865 if (res)
2866 break; /* An error occurred. All warnings were done before. */
2867
2868 insn_length = (extended_op ? 2 : 0) + 2 + (op1.ol * 2) + (op2.ol * 2);
2869 frag = frag_more (insn_length);
2870 where = frag - frag_now->fr_literal;
2871
2872 if (target_is_430xv2 ()
2873 && op1.mode == OP_REG
2874 && op1.reg == 0
2875 && (is_opcode ("rlax")
2876 || is_opcode ("rlcx")
2877 || is_opcode ("rla")
2878 || is_opcode ("rlc")))
2879 {
2880 as_bad (_("%s: attempt to rotate the PC register"), opcode->name);
2881 break;
2882 }
2883
2884 /* If the status register is the destination... */
2885 if (op1.am == 0 && op1.reg == 2
2886 /* ... and the opcode alters the SR. */
2887 && (is_opcode ("rla") || is_opcode ("rlc")
2888 || is_opcode ("rlax") || is_opcode ("rlcx")
2889 ))
2890 {
2891 if (silicon_errata_fix & SILICON_ERRATA_CPU13)
2892 as_bad (_("CPU13: SR is destination of SR altering instruction"));
2893 else if (silicon_errata_warn & SILICON_ERRATA_CPU13)
2894 as_warn (_("CPU13: SR is destination of SR altering instruction"));
2895 }
2896
2897 if (extended_op)
2898 {
2899 if (!addr_op)
2900 extended |= BYTE_OPERATION;
2901
2902 if ((op1.ol != 0 || op2.ol != 0) && ((extended & 0xf) != 0))
2903 {
2904 as_bad (_("repeat instruction used with non-register mode instruction"));
2905 extended &= ~ 0xf;
2906 }
2907
2908 if (op1.mode == OP_EXP)
2909 {
2910 if (op1.exp.X_op == O_constant)
2911 extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7;
2912
2913 else if (op1.reg || op1.am == 3) /* Not PC relative. */
2914 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE,
2915 BFD_RELOC_MSP430X_ABS20_EXT_SRC);
2916 else
2917 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE,
2918 BFD_RELOC_MSP430X_PCR20_EXT_SRC);
2919 }
2920
2921 if (op2.mode == OP_EXP)
2922 {
2923 if (op2.exp.X_op == O_constant)
2924 extended |= (op2.exp.X_add_number >> 16) & 0xf;
2925
2926 else if (op1.mode == OP_EXP)
2927 fix_new_exp (frag_now, where, 8, &(op2.exp), FALSE,
2928 op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_ODST
2929 : BFD_RELOC_MSP430X_PCR20_EXT_ODST);
2930 else
2931 fix_new_exp (frag_now, where, 6, &(op2.exp), FALSE,
2932 op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_DST
2933 : BFD_RELOC_MSP430X_PCR20_EXT_DST);
2934 }
2935
2936 /* Emit the extension word. */
2937 bfd_putl16 (extended, frag);
2938 frag += 2;
2939 where += 2;
2940 }
2941
2942 bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7));
2943 bfd_putl16 ((bfd_vma) bin, frag);
2944 frag += 2;
2945 where += 2;
2946
2947 if (op1.mode == OP_EXP)
2948 {
2949 if (op1.exp.X_op == O_constant)
2950 {
2951 bfd_putl16 (op1.exp.X_add_number & 0xffff, frag);
2952 }
2953 else
2954 {
2955 bfd_putl16 ((bfd_vma) ZEROS, frag);
2956
2957 if (!extended_op)
2958 {
2959 if (op1.reg || op1.am == 3) /* Not PC relative. */
2960 fix_new_exp (frag_now, where, 2,
2961 &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1));
2962 else
2963 fix_new_exp (frag_now, where, 2,
2964 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
2965 }
2966 }
2967 frag += 2;
2968 where += 2;
2969 }
2970
2971 if (op2.mode == OP_EXP)
2972 {
2973 if (op2.exp.X_op == O_constant)
2974 {
2975 bfd_putl16 (op2.exp.X_add_number & 0xffff, frag);
2976 }
2977 else
2978 {
2979 bfd_putl16 ((bfd_vma) ZEROS, frag);
2980
2981 if (!extended_op)
2982 {
2983 if (op2.reg) /* Not PC relative. */
2984 fix_new_exp (frag_now, where, 2,
2985 &(op2.exp), FALSE, CHECK_RELOC_MSP430 (op2));
2986 else
2987 fix_new_exp (frag_now, where, 2,
2988 &(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
2989 }
2990 }
2991 }
2992
2993 dwarf2_emit_insn (insn_length);
2994 break;
2995
2996 case 3:
2997 /* Branch instruction => mov dst, r0. */
2998 if (extended_op)
2999 {
3000 as_bad ("Internal error: state 0/3 not coded for extended instructions");
3001 break;
3002 }
3003
3004 line = extract_operand (line, l1, sizeof (l1));
3005 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, extended_op, FALSE);
3006 if (res)
3007 break;
3008
3009 byte_op = FALSE;
3010 imm_op = FALSE;
3011 bin |= ((op1.reg << 8) | (op1.am << 4));
3012 op_length = 2 + 2 * op1.ol;
3013 frag = frag_more (op_length);
3014 where = frag - frag_now->fr_literal;
3015 bfd_putl16 ((bfd_vma) bin, frag);
3016
3017 if (op1.mode == OP_EXP)
3018 {
3019 if (op1.exp.X_op == O_constant)
3020 {
3021 bfd_putl16 (op1.exp.X_add_number & 0xffff, frag + 2);
3022 }
3023 else
3024 {
3025 where += 2;
3026
3027 bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
3028
3029 if (op1.reg || op1.am == 3)
3030 fix_new_exp (frag_now, where, 2,
3031 &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1));
3032 else
3033 fix_new_exp (frag_now, where, 2,
3034 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
3035 }
3036 }
3037
3038 dwarf2_emit_insn (insn_length + op_length);
3039 break;
3040
3041 case 4:
3042 /* CALLA instructions. */
3043 fix_emitted = FALSE;
3044
3045 line = extract_operand (line, l1, sizeof (l1));
3046 imm_op = FALSE;
3047
3048 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op,
3049 extended_op, FALSE);
3050 if (res)
3051 break;
3052
3053 byte_op = FALSE;
3054
3055 op_length = 2 + 2 * op1.ol;
3056 frag = frag_more (op_length);
3057 where = frag - frag_now->fr_literal;
3058
3059 if (imm_op)
3060 {
3061 if (op1.am == 3)
3062 {
3063 bin |= 0xb0;
3064
3065 fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE,
3066 BFD_RELOC_MSP430X_ABS20_ADR_DST);
3067 fix_emitted = TRUE;
3068 }
3069 else if (op1.am == 1)
3070 {
3071 if (op1.reg == 0)
3072 {
3073 bin |= 0x90;
3074
3075 fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE,
3076 BFD_RELOC_MSP430X_PCR20_CALL);
3077 fix_emitted = TRUE;
3078 }
3079 else
3080 bin |= 0x50 | op1.reg;
3081 }
3082 else if (op1.am == 0)
3083 bin |= 0x40 | op1.reg;
3084 }
3085 else if (op1.am == 1)
3086 {
3087 bin |= 0x80;
3088
3089 fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE,
3090 BFD_RELOC_MSP430X_ABS20_ADR_DST);
3091 fix_emitted = TRUE;
3092 }
3093 else if (op1.am == 2)
3094 bin |= 0x60 | op1.reg;
3095 else if (op1.am == 3)
3096 bin |= 0x70 | op1.reg;
3097
3098 bfd_putl16 ((bfd_vma) bin, frag);
3099
3100 if (op1.mode == OP_EXP)
3101 {
3102 if (op1.ol != 1)
3103 {
3104 as_bad ("Internal error: unexpected CALLA instruction length: %d\n", op1.ol);
3105 break;
3106 }
3107
3108 bfd_putl16 ((bfd_vma) ZEROS, frag + 2);
3109
3110 if (! fix_emitted)
3111 fix_new_exp (frag_now, where + 2, 2,
3112 &(op1.exp), FALSE, BFD_RELOC_16);
3113 }
3114
3115 dwarf2_emit_insn (insn_length + op_length);
3116 break;
3117
3118 case 5:
3119 {
3120 int n;
3121 int reg;
3122
3123 /* [POP|PUSH]M[.A] #N, Rd */
3124 line = extract_operand (line, l1, sizeof (l1));
3125 line = extract_operand (line, l2, sizeof (l2));
3126
3127 if (*l1 != '#')
3128 {
3129 as_bad (_("expected #n as first argument of %s"), opcode->name);
3130 break;
3131 }
3132 end = parse_exp (l1 + 1, &(op1.exp));
3133 if (end != NULL && *end != 0)
3134 {
3135 as_bad (_("extra characters '%s' at end of constant expression '%s'"), end, l1);
3136 break;
3137 }
3138 if (op1.exp.X_op != O_constant)
3139 {
3140 as_bad (_("expected constant expression as first argument of %s"),
3141 opcode->name);
3142 break;
3143 }
3144
3145 if ((reg = check_reg (l2)) == -1)
3146 {
3147 as_bad (_("expected register as second argument of %s"),
3148 opcode->name);
3149 break;
3150 }
3151
3152 op_length = 2;
3153 frag = frag_more (op_length);
3154 where = frag - frag_now->fr_literal;
3155 bin = opcode->bin_opcode;
3156 if (! addr_op)
3157 bin |= 0x100;
3158 n = op1.exp.X_add_number;
3159 bin |= (n - 1) << 4;
3160 if (is_opcode ("pushm"))
3161 bin |= reg;
3162 else
3163 {
3164 if (reg - n + 1 < 0)
3165 {
3166 as_bad (_("Too many registers popped"));
3167 break;
3168 }
3169
3170 /* CPU21 errata: cannot use POPM to restore the SR register. */
3171 if (target_is_430xv2 ()
3172 && (reg - n + 1 < 3)
3173 && reg >= 2
3174 && is_opcode ("popm"))
3175 {
3176 as_bad (_("Cannot use POPM to restore the SR register"));
3177 break;
3178 }
3179
3180 bin |= (reg - n + 1);
3181 }
3182
3183 bfd_putl16 ((bfd_vma) bin, frag);
3184 dwarf2_emit_insn (op_length);
3185 break;
3186 }
3187
3188 case 6:
3189 {
3190 int n;
3191 int reg;
3192
3193 /* Bit rotation instructions. RRCM, RRAM, RRUM, RLAM. */
3194 if (extended & 0xff)
3195 {
3196 as_bad (_("repeat count cannot be used with %s"), opcode->name);
3197 break;
3198 }
3199
3200 line = extract_operand (line, l1, sizeof (l1));
3201 line = extract_operand (line, l2, sizeof (l2));
3202
3203 if (*l1 != '#')
3204 {
3205 as_bad (_("expected #n as first argument of %s"), opcode->name);
3206 break;
3207 }
3208 end = parse_exp (l1 + 1, &(op1.exp));
3209 if (end != NULL && *end != 0)
3210 {
3211 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1);
3212 break;
3213 }
3214 if (op1.exp.X_op != O_constant)
3215 {
3216 as_bad (_("expected constant expression as first argument of %s"),
3217 opcode->name);
3218 break;
3219 }
3220 n = op1.exp.X_add_number;
3221 if (n > 4 || n < 1)
3222 {
3223 as_bad (_("expected first argument of %s to be in the range 1-4"),
3224 opcode->name);
3225 break;
3226 }
3227
3228 if ((reg = check_reg (l2)) == -1)
3229 {
3230 as_bad (_("expected register as second argument of %s"),
3231 opcode->name);
3232 break;
3233 }
3234
3235 if (target_is_430xv2 () && reg == 0)
3236 {
3237 as_bad (_("%s: attempt to rotate the PC register"), opcode->name);
3238 break;
3239 }
3240
3241 op_length = 2;
3242 frag = frag_more (op_length);
3243 where = frag - frag_now->fr_literal;
3244
3245 bin = opcode->bin_opcode;
3246 if (! addr_op)
3247 bin |= 0x10;
3248 bin |= (n - 1) << 10;
3249 bin |= reg;
3250
3251 bfd_putl16 ((bfd_vma) bin, frag);
3252 dwarf2_emit_insn (op_length);
3253 break;
3254 }
3255
3256 case 8:
3257 {
3258 bfd_boolean need_reloc = FALSE;
3259 int n;
3260 int reg;
3261
3262 /* ADDA, CMPA and SUBA address instructions. */
3263 if (extended & 0xff)
3264 {
3265 as_bad (_("repeat count cannot be used with %s"), opcode->name);
3266 break;
3267 }
3268
3269 line = extract_operand (line, l1, sizeof (l1));
3270 line = extract_operand (line, l2, sizeof (l2));
3271
3272 bin = opcode->bin_opcode;
3273
3274 if (*l1 == '#')
3275 {
3276 end = parse_exp (l1 + 1, &(op1.exp));
3277 if (end != NULL && *end != 0)
3278 {
3279 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1);
3280 break;
3281 }
3282
3283 if (op1.exp.X_op == O_constant)
3284 {
3285 n = op1.exp.X_add_number;
3286 if (n > 0xfffff || n < - (0x7ffff))
3287 {
3288 as_bad (_("expected value of first argument of %s to fit into 20-bits"),
3289 opcode->name);
3290 break;
3291 }
3292
3293 bin |= ((n >> 16) & 0xf) << 8;
3294 }
3295 else
3296 {
3297 n = 0;
3298 need_reloc = TRUE;
3299 }
3300
3301 op_length = 4;
3302 }
3303 else
3304 {
3305 if ((n = check_reg (l1)) == -1)
3306 {
3307 as_bad (_("expected register name or constant as first argument of %s"),
3308 opcode->name);
3309 break;
3310 }
3311
3312 bin |= (n << 8) | (1 << 6);
3313 op_length = 2;
3314 }
3315
3316 if ((reg = check_reg (l2)) == -1)
3317 {
3318 as_bad (_("expected register as second argument of %s"),
3319 opcode->name);
3320 break;
3321 }
3322
3323 frag = frag_more (op_length);
3324 where = frag - frag_now->fr_literal;
3325 bin |= reg;
3326 if (need_reloc)
3327 fix_new_exp (frag_now, where, 4, &(op1.exp), FALSE,
3328 BFD_RELOC_MSP430X_ABS20_ADR_SRC);
3329
3330 bfd_putl16 ((bfd_vma) bin, frag);
3331 if (op_length == 4)
3332 bfd_putl16 ((bfd_vma) (n & 0xffff), frag + 2);
3333 dwarf2_emit_insn (op_length);
3334 break;
3335 }
3336
3337 case 9: /* MOVA, BRA, RETA. */
3338 imm_op = FALSE;
3339 bin = opcode->bin_opcode;
3340
3341 if (is_opcode ("reta"))
3342 {
3343 /* The RETA instruction does not take any arguments.
3344 The implicit first argument is @SP+.
3345 The implicit second argument is PC. */
3346 op1.mode = OP_REG;
3347 op1.am = 3;
3348 op1.reg = 1;
3349
3350 op2.mode = OP_REG;
3351 op2.reg = 0;
3352 }
3353 else
3354 {
3355 line = extract_operand (line, l1, sizeof (l1));
3356 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode,
3357 &imm_op, extended_op, FALSE);
3358
3359 if (is_opcode ("bra"))
3360 {
3361 /* This is the BRA synthetic instruction.
3362 The second argument is always PC. */
3363 op2.mode = OP_REG;
3364 op2.reg = 0;
3365 }
3366 else
3367 {
3368 line = extract_operand (line, l2, sizeof (l2));
3369 res += msp430_dstoperand (&op2, l2, opcode->bin_opcode,
3370 extended_op, TRUE);
3371 }
3372
3373 if (res)
3374 break; /* Error occurred. All warnings were done before. */
3375 }
3376
3377 /* Only a restricted subset of the normal MSP430 addressing modes
3378 are supported here, so check for the ones that are allowed. */
3379 if ((op_length = try_encode_mova (imm_op, bin, & op1, & op2,
3380 & error_message)) == 0)
3381 {
3382 as_bad (error_message, opcode->name);
3383 break;
3384 }
3385 dwarf2_emit_insn (op_length);
3386 break;
3387
3388 case 10: /* RPT */
3389 line = extract_operand (line, l1, sizeof l1);
3390 /* The RPT instruction only accepted immediates and registers. */
3391 if (*l1 == '#')
3392 {
3393 end = parse_exp (l1 + 1, &(op1.exp));
3394 if (end != NULL && *end != 0)
3395 {
3396 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1);
3397 break;
3398 }
3399 if (op1.exp.X_op != O_constant)
3400 {
3401 as_bad (_("expected constant value as argument to RPT"));
3402 break;
3403 }
3404 if (op1.exp.X_add_number < 1
3405 || op1.exp.X_add_number > (1 << 4))
3406 {
3407 as_bad (_("expected constant in the range 2..16"));
3408 break;
3409 }
3410
3411 /* We silently accept and ignore a repeat count of 1. */
3412 if (op1.exp.X_add_number > 1)
3413 repeat_count = op1.exp.X_add_number;
3414 }
3415 else
3416 {
3417 int reg;
3418
3419 if ((reg = check_reg (l1)) != -1)
3420 {
3421 if (reg == 0)
3422 as_warn (_("PC used as an argument to RPT"));
3423 else
3424 repeat_count = - reg;
3425 }
3426 else
3427 {
3428 as_bad (_("expected constant or register name as argument to RPT insn"));
3429 break;
3430 }
3431 }
3432 break;
3433
3434 default:
3435 as_bad (_("Illegal emulated instruction"));
3436 break;
3437 }
3438 break;
3439
3440 case 1: /* Format 1, double operand. */
3441 line = extract_operand (line, l1, sizeof (l1));
3442 line = extract_operand (line, l2, sizeof (l2));
3443 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode, &imm_op, extended_op, TRUE);
3444 res += msp430_dstoperand (&op2, l2, opcode->bin_opcode, extended_op, TRUE);
3445
3446 if (res)
3447 break; /* Error occurred. All warnings were done before. */
3448
3449 if (extended_op
3450 && is_opcode ("movx")
3451 && addr_op
3452 && msp430_enable_relax)
3453 {
3454 /* This is the MOVX.A instruction. See if we can convert
3455 it into the MOVA instruction instead. This saves 2 bytes. */
3456 if ((op_length = try_encode_mova (imm_op, 0x0000, & op1, & op2,
3457 NULL)) != 0)
3458 {
3459 dwarf2_emit_insn (op_length);
3460 break;
3461 }
3462 }
3463
3464 bin |= (op2.reg | (op1.reg << 8) | (op1.am << 4) | (op2.am << 7));
3465
3466 /* If the PC is the destination... */
3467 if (op2.am == 0 && op2.reg == 0
3468 /* ... and the opcode alters the SR. */
3469 && !(is_opcode ("bic") || is_opcode ("bis") || is_opcode ("mov")
3470 || is_opcode ("bicx") || is_opcode ("bisx") || is_opcode ("movx")))
3471 {
3472 if (silicon_errata_fix & SILICON_ERRATA_CPU11)
3473 as_bad (_("CPU11: PC is destination of SR altering instruction"));
3474 else if (silicon_errata_warn & SILICON_ERRATA_CPU11)
3475 as_warn (_("CPU11: PC is destination of SR altering instruction"));
3476 }
3477
3478 /* If the status register is the destination... */
3479 if (op2.am == 0 && op2.reg == 2
3480 /* ... and the opcode alters the SR. */
3481 && (is_opcode ("add") || is_opcode ("addc") || is_opcode ("and")
3482 || is_opcode ("dadd") || is_opcode ("sub") || is_opcode ("subc")
3483 || is_opcode ("xor")
3484 || is_opcode ("addx") || is_opcode ("addcx") || is_opcode ("andx")
3485 || is_opcode ("daddx") || is_opcode ("subx") || is_opcode ("subcx")
3486 || is_opcode ("xorx")
3487 ))
3488 {
3489 if (silicon_errata_fix & SILICON_ERRATA_CPU13)
3490 as_bad (_("CPU13: SR is destination of SR altering instruction"));
3491 else if (silicon_errata_warn & SILICON_ERRATA_CPU13)
3492 as_warn (_("CPU13: SR is destination of SR altering instruction"));
3493 }
3494
3495 if ( (is_opcode ("bic") && bin == 0xc232)
3496 || (is_opcode ("bis") && bin == 0xd232)
3497 || (is_opcode ("mov") && op2.mode == OP_REG && op2.reg == 2))
3498 {
3499 /* Avoid false checks when a constant value is being put into the SR. */
3500 if (op1.mode == OP_EXP
3501 && op1.exp.X_op == O_constant
3502 && (op1.exp.X_add_number & 0x8) != 0x8)
3503 ;
3504 else
3505 check_for_nop |= NOP_CHECK_INTERRUPT;
3506 }
3507
3508 if (((is_opcode ("bis") && bin == 0xd032)
3509 || (is_opcode ("mov") && bin == 0x4032)
3510 || (is_opcode ("xor") && bin == 0xe032))
3511 && op1.mode == OP_EXP
3512 && op1.exp.X_op == O_constant
3513 && (op1.exp.X_add_number & 0x10) == 0x10)
3514 check_for_nop |= NOP_CHECK_CPU19;
3515
3516 /* Compute the entire length of the instruction in bytes. */
3517 op_length = (extended_op ? 2 : 0) /* The extension word. */
3518 + 2 /* The opcode */
3519 + (2 * op1.ol) /* The first operand. */
3520 + (2 * op2.ol); /* The second operand. */
3521
3522 insn_length += op_length;
3523 frag = frag_more (op_length);
3524 where = frag - frag_now->fr_literal;
3525
3526 if (extended_op)
3527 {
3528 if (!addr_op)
3529 extended |= BYTE_OPERATION;
3530
3531 if ((op1.ol != 0 || op2.ol != 0) && ((extended & 0xf) != 0))
3532 {
3533 as_bad (_("repeat instruction used with non-register mode instruction"));
3534 extended &= ~ 0xf;
3535 }
3536
3537 /* If necessary, emit a reloc to update the extension word. */
3538 if (op1.mode == OP_EXP)
3539 {
3540 if (op1.exp.X_op == O_constant)
3541 extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7;
3542
3543 else if (op1.reg || op1.am == 3) /* Not PC relative. */
3544 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE,
3545 BFD_RELOC_MSP430X_ABS20_EXT_SRC);
3546 else
3547 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE,
3548 BFD_RELOC_MSP430X_PCR20_EXT_SRC);
3549 }
3550
3551 if (op2.mode == OP_EXP)
3552 {
3553 if (op2.exp.X_op == O_constant)
3554 extended |= (op2.exp.X_add_number >> 16) & 0xf;
3555
3556 else if (op1.mode == OP_EXP)
3557 fix_new_exp (frag_now, where, 8, &(op2.exp), FALSE,
3558 op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_ODST
3559 : BFD_RELOC_MSP430X_PCR20_EXT_ODST);
3560
3561 else
3562 fix_new_exp (frag_now, where, 6, &(op2.exp), FALSE,
3563 op2.reg ? BFD_RELOC_MSP430X_ABS20_EXT_DST
3564 : BFD_RELOC_MSP430X_PCR20_EXT_DST);
3565 }
3566
3567 /* Emit the extension word. */
3568 bfd_putl16 (extended, frag);
3569 where += 2;
3570 frag += 2;
3571 }
3572
3573 bfd_putl16 ((bfd_vma) bin, frag);
3574 where += 2;
3575 frag += 2;
3576
3577 if (op1.mode == OP_EXP)
3578 {
3579 if (op1.exp.X_op == O_constant)
3580 {
3581 bfd_putl16 (op1.exp.X_add_number & 0xffff, frag);
3582 }
3583 else
3584 {
3585 bfd_putl16 ((bfd_vma) ZEROS, frag);
3586
3587 if (!extended_op)
3588 {
3589 if (op1.reg || op1.am == 3) /* Not PC relative. */
3590 fix_new_exp (frag_now, where, 2,
3591 &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1));
3592 else
3593 fix_new_exp (frag_now, where, 2,
3594 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
3595 }
3596 }
3597
3598 where += 2;
3599 frag += 2;
3600 }
3601
3602 if (op2.mode == OP_EXP)
3603 {
3604 if (op2.exp.X_op == O_constant)
3605 {
3606 bfd_putl16 (op2.exp.X_add_number & 0xffff, frag);
3607 }
3608 else
3609 {
3610 bfd_putl16 ((bfd_vma) ZEROS, frag);
3611
3612 if (!extended_op)
3613 {
3614 if (op2.reg) /* Not PC relative. */
3615 fix_new_exp (frag_now, where, 2,
3616 &(op2.exp), FALSE, CHECK_RELOC_MSP430 (op2));
3617 else
3618 fix_new_exp (frag_now, where, 2,
3619 &(op2.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
3620 }
3621 }
3622 }
3623
3624 dwarf2_emit_insn (insn_length);
3625
3626 /* If the PC is the destination... */
3627 if (op2.am == 0 && op2.reg == 0
3628 /* ... but the opcode does not alter the destination. */
3629 && (is_opcode ("cmp") || is_opcode ("bit") || is_opcode ("cmpx")))
3630 check_for_nop |= NOP_CHECK_CPU12;
3631 break;
3632
3633 case 2: /* Single-operand mostly instr. */
3634 if (opcode->insn_opnumb == 0)
3635 {
3636 /* reti instruction. */
3637 insn_length += 2;
3638 frag = frag_more (2);
3639 bfd_putl16 ((bfd_vma) bin, frag);
3640 dwarf2_emit_insn (insn_length);
3641 break;
3642 }
3643
3644 line = extract_operand (line, l1, sizeof (l1));
3645 res = msp430_srcoperand (&op1, l1, opcode->bin_opcode,
3646 &imm_op, extended_op, TRUE);
3647 if (res)
3648 break; /* Error in operand. */
3649
3650 if (target_is_430xv2 ()
3651 && op1.mode == OP_REG
3652 && op1.reg == 0
3653 && (is_opcode ("rrax")
3654 || is_opcode ("rrcx")
3655 || is_opcode ("rra")
3656 || is_opcode ("rrc")))
3657 {
3658 as_bad (_("%s: attempt to rotate the PC register"), opcode->name);
3659 break;
3660 }
3661
3662 /* If the status register is the destination... */
3663 if (op1.am == 0 && op1.reg == 2
3664 /* ... and the opcode alters the SR. */
3665 && (is_opcode ("rra") || is_opcode ("rrc") || is_opcode ("sxt")))
3666 {
3667 if (silicon_errata_fix & SILICON_ERRATA_CPU13)
3668 as_bad (_("CPU13: SR is destination of SR altering instruction"));
3669 else if (silicon_errata_warn & SILICON_ERRATA_CPU13)
3670 as_warn (_("CPU13: SR is destination of SR altering instruction"));
3671 }
3672
3673 insn_length = (extended_op ? 2 : 0) + 2 + (op1.ol * 2);
3674 frag = frag_more (insn_length);
3675 where = frag - frag_now->fr_literal;
3676
3677 if (extended_op)
3678 {
3679 if (is_opcode ("swpbx") || is_opcode ("sxtx"))
3680 {
3681 /* These two instructions use a special
3682 encoding of the A/L and B/W bits. */
3683 bin &= ~ BYTE_OPERATION;
3684
3685 if (byte_op)
3686 {
3687 as_bad (_("%s instruction does not accept a .b suffix"),
3688 opcode->name);
3689 break;
3690 }
3691 else if (! addr_op)
3692 extended |= BYTE_OPERATION;
3693 }
3694 else if (! addr_op)
3695 extended |= BYTE_OPERATION;
3696
3697 if (is_opcode ("rrux"))
3698 extended |= IGNORE_CARRY_BIT;
3699
3700 if (op1.ol != 0 && ((extended & 0xf) != 0))
3701 {
3702 as_bad (_("repeat instruction used with non-register mode instruction"));
3703 extended &= ~ 0xf;
3704 }
3705
3706 if (op1.mode == OP_EXP)
3707 {
3708 if (op1.exp.X_op == O_constant)
3709 extended |= ((op1.exp.X_add_number >> 16) & 0xf) << 7;
3710
3711 else if (op1.reg || op1.am == 3) /* Not PC relative. */
3712 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE,
3713 BFD_RELOC_MSP430X_ABS20_EXT_SRC);
3714 else
3715 fix_new_exp (frag_now, where, 6, &(op1.exp), FALSE,
3716 BFD_RELOC_MSP430X_PCR20_EXT_SRC);
3717 }
3718
3719 /* Emit the extension word. */
3720 bfd_putl16 (extended, frag);
3721 frag += 2;
3722 where += 2;
3723 }
3724
3725 bin |= op1.reg | (op1.am << 4);
3726 bfd_putl16 ((bfd_vma) bin, frag);
3727 frag += 2;
3728 where += 2;
3729
3730 if (op1.mode == OP_EXP)
3731 {
3732 if (op1.exp.X_op == O_constant)
3733 {
3734 bfd_putl16 (op1.exp.X_add_number & 0xffff, frag);
3735 }
3736 else
3737 {
3738 bfd_putl16 ((bfd_vma) ZEROS, frag);
3739
3740 if (!extended_op)
3741 {
3742 if (op1.reg || op1.am == 3) /* Not PC relative. */
3743 fix_new_exp (frag_now, where, 2,
3744 &(op1.exp), FALSE, CHECK_RELOC_MSP430 (op1));
3745 else
3746 fix_new_exp (frag_now, where, 2,
3747 &(op1.exp), TRUE, CHECK_RELOC_MSP430_PCREL);
3748 }
3749 }
3750 }
3751
3752 dwarf2_emit_insn (insn_length);
3753 break;
3754
3755 case 3: /* Conditional jumps instructions. */
3756 line = extract_operand (line, l1, sizeof (l1));
3757 /* l1 is a label. */
3758 if (l1[0])
3759 {
3760 char *m = l1;
3761 expressionS exp;
3762
3763 if (*m == '$')
3764 m++;
3765
3766 end = parse_exp (m, &exp);
3767 if (end != NULL && *end != 0)
3768 {
3769 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1);
3770 break;
3771 }
3772
3773 /* In order to handle something like:
3774
3775 and #0x8000, r5
3776 tst r5
3777 jz 4 ; skip next 4 bytes
3778 inv r5
3779 inc r5
3780 nop ; will jump here if r5 positive or zero
3781
3782 jCOND -n ;assumes jump n bytes backward:
3783
3784 mov r5,r6
3785 jmp -2
3786
3787 is equal to:
3788 lab:
3789 mov r5,r6
3790 jmp lab
3791
3792 jCOND $n ; jump from PC in either direction. */
3793
3794 if (exp.X_op == O_constant)
3795 {
3796 int x = exp.X_add_number;
3797
3798 if (x & 1)
3799 {
3800 as_warn (_("Even number required. Rounded to %d"), x + 1);
3801 x++;
3802 }
3803
3804 if ((*l1 == '$' && x > 0) || x < 0)
3805 x -= 2;
3806
3807 x >>= 1;
3808
3809 if (x > 512 || x < -511)
3810 {
3811 as_bad (_("Wrong displacement %d"), x << 1);
3812 break;
3813 }
3814
3815 insn_length += 2;
3816 frag = frag_more (2); /* Instr size is 1 word. */
3817
3818 bin |= x & 0x3ff;
3819 bfd_putl16 ((bfd_vma) bin, frag);
3820 }
3821 else if (exp.X_op == O_symbol && *l1 != '$')
3822 {
3823 insn_length += 2;
3824 frag = frag_more (2); /* Instr size is 1 word. */
3825 where = frag - frag_now->fr_literal;
3826 fix_new_exp (frag_now, where, 2,
3827 &exp, TRUE, BFD_RELOC_MSP430_10_PCREL);
3828
3829 bfd_putl16 ((bfd_vma) bin, frag);
3830 }
3831 else if (*l1 == '$')
3832 {
3833 as_bad (_("instruction requires label sans '$'"));
3834 }
3835 else
3836 as_bad (_
3837 ("instruction requires label or value in range -511:512"));
3838 dwarf2_emit_insn (insn_length);
3839 break;
3840 }
3841 else
3842 {
3843 as_bad (_("instruction requires label"));
3844 break;
3845 }
3846 break;
3847
3848 case 4: /* Extended jumps. */
3849 if (!msp430_enable_polys)
3850 {
3851 as_bad (_("polymorphs are not enabled. Use -mP option to enable."));
3852 break;
3853 }
3854
3855 line = extract_operand (line, l1, sizeof (l1));
3856 if (l1[0])
3857 {
3858 char *m = l1;
3859 expressionS exp;
3860
3861 /* Ignore absolute addressing. make it PC relative anyway. */
3862 if (*m == '#' || *m == '$')
3863 m++;
3864
3865 end = parse_exp (m, & exp);
3866 if (end != NULL && *end != 0)
3867 {
3868 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1);
3869 break;
3870 }
3871 if (exp.X_op == O_symbol)
3872 {
3873 /* Relaxation required. */
3874 struct rcodes_s rc = msp430_rcodes[opcode->insn_opnumb];
3875
3876 if (target_is_430x ())
3877 rc = msp430x_rcodes[opcode->insn_opnumb];
3878
3879 /* The parameter to dwarf2_emit_insn is actually the offset to
3880 the start of the insn from the fix piece of instruction that
3881 was emitted. Since next fragments may have variable size we
3882 tie debug info to the beginning of the instruction. */
3883 insn_length += 8;
3884 frag = frag_more (8);
3885 dwarf2_emit_insn (0);
3886 bfd_putl16 ((bfd_vma) rc.sop, frag);
3887 frag = frag_variant (rs_machine_dependent, 8, 2,
3888 /* Wild guess. */
3889 ENCODE_RELAX (rc.lpos, STATE_BITS10),
3890 exp.X_add_symbol,
3891 0, /* Offset is zero if jump dist less than 1K. */
3892 (char *) frag);
3893 break;
3894 }
3895 }
3896
3897 as_bad (_("instruction requires label"));
3898 break;
3899
3900 case 5: /* Emulated extended branches. */
3901 if (!msp430_enable_polys)
3902 {
3903 as_bad (_("polymorphs are not enabled. Use -mP option to enable."));
3904 break;
3905 }
3906 line = extract_operand (line, l1, sizeof (l1));
3907 if (l1[0])
3908 {
3909 char * m = l1;
3910 expressionS exp;
3911
3912 /* Ignore absolute addressing. make it PC relative anyway. */
3913 if (*m == '#' || *m == '$')
3914 m++;
3915
3916 end = parse_exp (m, & exp);
3917 if (end != NULL && *end != 0)
3918 {
3919 as_bad (_("extra characters '%s' at end of operand '%s'"), end, l1);
3920 break;
3921 }
3922 if (exp.X_op == O_symbol)
3923 {
3924 /* Relaxation required. */
3925 struct hcodes_s hc = msp430_hcodes[opcode->insn_opnumb];
3926
3927 if (target_is_430x ())
3928 hc = msp430x_hcodes[opcode->insn_opnumb];
3929
3930 insn_length += 8;
3931 frag = frag_more (8);
3932 dwarf2_emit_insn (0);
3933 bfd_putl16 ((bfd_vma) hc.op0, frag);
3934 bfd_putl16 ((bfd_vma) hc.op1, frag+2);
3935
3936 frag = frag_variant (rs_machine_dependent, 8, 2,
3937 ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_BITS10), /* Wild guess. */
3938 exp.X_add_symbol,
3939 0, /* Offset is zero if jump dist less than 1K. */
3940 (char *) frag);
3941 break;
3942 }
3943 }
3944
3945 as_bad (_("instruction requires label"));
3946 break;
3947
3948 default:
3949 as_bad (_("Illegal instruction or not implemented opcode."));
3950 }
3951
3952 if (is_opcode ("nop"))
3953 prev_insn_is_nop = TRUE;
3954 else
3955 prev_insn_is_nop = FALSE;
3956
3957 input_line_pointer = line;
3958 return 0;
3959 }
3960
3961 void
3962 md_assemble (char * str)
3963 {
3964 struct msp430_opcode_s * opcode;
3965 char cmd[32];
3966 unsigned int i = 0;
3967
3968 str = skip_space (str); /* Skip leading spaces. */
3969 str = extract_cmd (str, cmd, sizeof (cmd) - 1);
3970
3971 while (cmd[i])
3972 {
3973 char a = TOLOWER (cmd[i]);
3974 cmd[i] = a;
3975 i++;
3976 }
3977
3978 if (!cmd[0])
3979 {
3980 as_bad (_("can't find opcode"));
3981 return;
3982 }
3983
3984 opcode = (struct msp430_opcode_s *) hash_find (msp430_hash, cmd);
3985
3986 if (opcode == NULL)
3987 {
3988 as_bad (_("unknown opcode `%s'"), cmd);
3989 return;
3990 }
3991
3992 {
3993 char *__t = input_line_pointer;
3994
3995 msp430_operands (opcode, str);
3996 input_line_pointer = __t;
3997 }
3998 }
3999
4000 /* GAS will call this function for each section at the end of the assembly,
4001 to permit the CPU backend to adjust the alignment of a section. */
4002
4003 valueT
4004 md_section_align (asection * seg, valueT addr)
4005 {
4006 int align = bfd_get_section_alignment (stdoutput, seg);
4007
4008 return ((addr + (1 << align) - 1) & -(1 << align));
4009 }
4010
4011 /* If you define this macro, it should return the offset between the
4012 address of a PC relative fixup and the position from which the PC
4013 relative adjustment should be made. On many processors, the base
4014 of a PC relative instruction is the next instruction, so this
4015 macro would return the length of an instruction. */
4016
4017 long
4018 md_pcrel_from_section (fixS * fixp, segT sec)
4019 {
4020 if (fixp->fx_addsy != (symbolS *) NULL
4021 && (!S_IS_DEFINED (fixp->fx_addsy)
4022 || (S_GET_SEGMENT (fixp->fx_addsy) != sec)))
4023 return 0;
4024
4025 return fixp->fx_frag->fr_address + fixp->fx_where;
4026 }
4027
4028 /* Addition to the standard TC_FORCE_RELOCATION_LOCAL.
4029 Now it handles the situation when relocations
4030 have to be passed to linker. */
4031 int
4032 msp430_force_relocation_local (fixS *fixp)
4033 {
4034 if (fixp->fx_r_type == BFD_RELOC_MSP430_10_PCREL)
4035 return 1;
4036 if (fixp->fx_pcrel)
4037 return 1;
4038 if (msp430_enable_polys
4039 && !msp430_enable_relax)
4040 return 1;
4041
4042 return 0;
4043 }
4044
4045
4046 /* GAS will call this for each fixup. It should store the correct
4047 value in the object file. */
4048 void
4049 md_apply_fix (fixS * fixp, valueT * valuep, segT seg)
4050 {
4051 unsigned char * where;
4052 unsigned long insn;
4053 long value;
4054
4055 if (fixp->fx_addsy == (symbolS *) NULL)
4056 {
4057 value = *valuep;
4058 fixp->fx_done = 1;
4059 }
4060 else if (fixp->fx_pcrel)
4061 {
4062 segT s = S_GET_SEGMENT (fixp->fx_addsy);
4063
4064 if (fixp->fx_addsy && (s == seg || s == absolute_section))
4065 {
4066 /* FIXME: We can appear here only in case if we perform a pc
4067 relative jump to the label which is i) global, ii) locally
4068 defined or this is a jump to an absolute symbol.
4069 If this is an absolute symbol -- everything is OK.
4070 If this is a global label, we've got a symbol value defined
4071 twice:
4072 1. S_GET_VALUE (fixp->fx_addsy) will contain a symbol offset
4073 from this section start
4074 2. *valuep will contain the real offset from jump insn to the
4075 label
4076 So, the result of S_GET_VALUE (fixp->fx_addsy) + (* valuep);
4077 will be incorrect. Therefore remove s_get_value. */
4078 value = /* S_GET_VALUE (fixp->fx_addsy) + */ * valuep;
4079 fixp->fx_done = 1;
4080 }
4081 else
4082 value = *valuep;
4083 }
4084 else
4085 {
4086 value = fixp->fx_offset;
4087
4088 if (fixp->fx_subsy != (symbolS *) NULL)
4089 {
4090 if (S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
4091 {
4092 value -= S_GET_VALUE (fixp->fx_subsy);
4093 fixp->fx_done = 1;
4094 }
4095 }
4096 }
4097
4098 fixp->fx_no_overflow = 1;
4099
4100 /* If polymorphs are enabled and relax disabled.
4101 do not kill any relocs and pass them to linker. */
4102 if (msp430_enable_polys
4103 && !msp430_enable_relax)
4104 {
4105 if (!fixp->fx_addsy
4106 || S_GET_SEGMENT (fixp->fx_addsy) == absolute_section)
4107 fixp->fx_done = 1; /* It is ok to kill 'abs' reloc. */
4108 else
4109 fixp->fx_done = 0;
4110 }
4111
4112 if (fixp->fx_done)
4113 {
4114 /* Fetch the instruction, insert the fully resolved operand
4115 value, and stuff the instruction back again. */
4116 where = (unsigned char *) fixp->fx_frag->fr_literal + fixp->fx_where;
4117
4118 insn = bfd_getl16 (where);
4119
4120 switch (fixp->fx_r_type)
4121 {
4122 case BFD_RELOC_MSP430_10_PCREL:
4123 if (value & 1)
4124 as_bad_where (fixp->fx_file, fixp->fx_line,
4125 _("odd address operand: %ld"), value);
4126
4127 /* Jumps are in words. */
4128 value >>= 1;
4129 --value; /* Correct PC. */
4130
4131 if (value < -512 || value > 511)
4132 as_bad_where (fixp->fx_file, fixp->fx_line,
4133 _("operand out of range: %ld"), value);
4134
4135 value &= 0x3ff; /* get rid of extended sign */
4136 bfd_putl16 ((bfd_vma) (value | insn), where);
4137 break;
4138
4139 case BFD_RELOC_MSP430X_PCR16:
4140 case BFD_RELOC_MSP430_RL_PCREL:
4141 case BFD_RELOC_MSP430_16_PCREL:
4142 if (value & 1)
4143 as_bad_where (fixp->fx_file, fixp->fx_line,
4144 _("odd address operand: %ld"), value);
4145 /* Fall through. */
4146
4147 case BFD_RELOC_MSP430_16_PCREL_BYTE:
4148 /* Nothing to be corrected here. */
4149 if (value < -32768 || value > 65536)
4150 as_bad_where (fixp->fx_file, fixp->fx_line,
4151 _("operand out of range: %ld"), value);
4152 /* Fall through. */
4153
4154 case BFD_RELOC_MSP430X_ABS16:
4155 case BFD_RELOC_MSP430_16:
4156 case BFD_RELOC_16:
4157 case BFD_RELOC_MSP430_16_BYTE:
4158 value &= 0xffff; /* Get rid of extended sign. */
4159 bfd_putl16 ((bfd_vma) value, where);
4160 break;
4161
4162 case BFD_RELOC_MSP430_ABS_HI16:
4163 value >>= 16;
4164 value &= 0xffff; /* Get rid of extended sign. */
4165 bfd_putl16 ((bfd_vma) value, where);
4166 break;
4167
4168 case BFD_RELOC_32:
4169 bfd_putl16 ((bfd_vma) value, where);
4170 break;
4171
4172 case BFD_RELOC_MSP430_ABS8:
4173 case BFD_RELOC_8:
4174 bfd_put_8 (NULL, (bfd_vma) value, where);
4175 break;
4176
4177 case BFD_RELOC_MSP430X_ABS20_EXT_SRC:
4178 case BFD_RELOC_MSP430X_PCR20_EXT_SRC:
4179 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 4);
4180 value >>= 16;
4181 bfd_putl16 ((bfd_vma) (((value & 0xf) << 7) | insn), where);
4182 break;
4183
4184 case BFD_RELOC_MSP430X_ABS20_ADR_SRC:
4185 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2);
4186 value >>= 16;
4187 bfd_putl16 ((bfd_vma) (((value & 0xf) << 8) | insn), where);
4188 break;
4189
4190 case BFD_RELOC_MSP430X_ABS20_EXT_ODST:
4191 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 6);
4192 value >>= 16;
4193 bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where);
4194 break;
4195
4196 case BFD_RELOC_MSP430X_PCR20_CALL:
4197 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2);
4198 value >>= 16;
4199 bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where);
4200 break;
4201
4202 case BFD_RELOC_MSP430X_ABS20_EXT_DST:
4203 case BFD_RELOC_MSP430X_PCR20_EXT_DST:
4204 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 4);
4205 value >>= 16;
4206 bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where);
4207 break;
4208
4209 case BFD_RELOC_MSP430X_PCR20_EXT_ODST:
4210 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 6);
4211 value >>= 16;
4212 bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where);
4213 break;
4214
4215 case BFD_RELOC_MSP430X_ABS20_ADR_DST:
4216 bfd_putl16 ((bfd_vma) (value & 0xffff), where + 2);
4217 value >>= 16;
4218 bfd_putl16 ((bfd_vma) ((value & 0xf) | insn), where);
4219 break;
4220
4221 default:
4222 as_fatal (_("line %d: unknown relocation type: 0x%x"),
4223 fixp->fx_line, fixp->fx_r_type);
4224 break;
4225 }
4226 }
4227 else
4228 {
4229 fixp->fx_addnumber = value;
4230 }
4231 }
4232
4233 static bfd_boolean
4234 S_IS_GAS_LOCAL (symbolS * s)
4235 {
4236 const char * name;
4237 unsigned int len;
4238
4239 if (s == NULL)
4240 return FALSE;
4241 name = S_GET_NAME (s);
4242 len = strlen (name) - 1;
4243
4244 return name[len] == 1 || name[len] == 2;
4245 }
4246
4247 /* GAS will call this to generate a reloc, passing the resulting reloc
4248 to `bfd_install_relocation'. This currently works poorly, as
4249 `bfd_install_relocation' often does the wrong thing, and instances of
4250 `tc_gen_reloc' have been written to work around the problems, which
4251 in turns makes it difficult to fix `bfd_install_relocation'. */
4252
4253 /* If while processing a fixup, a reloc really needs to be created
4254 then it is done here. */
4255
4256 arelent **
4257 tc_gen_reloc (asection * seg ATTRIBUTE_UNUSED, fixS * fixp)
4258 {
4259 static arelent * no_relocs = NULL;
4260 static arelent * relocs[MAX_RELOC_EXPANSION + 1];
4261 arelent *reloc;
4262
4263 reloc = XNEW (arelent);
4264 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
4265 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
4266
4267 if (reloc->howto == (reloc_howto_type *) NULL)
4268 {
4269 as_bad_where (fixp->fx_file, fixp->fx_line,
4270 _("reloc %d not supported by object file format"),
4271 (int) fixp->fx_r_type);
4272 free (reloc);
4273 return & no_relocs;
4274 }
4275
4276 relocs[0] = reloc;
4277 relocs[1] = NULL;
4278
4279 if (fixp->fx_subsy
4280 && S_GET_SEGMENT (fixp->fx_subsy) == absolute_section)
4281 {
4282 fixp->fx_offset -= S_GET_VALUE (fixp->fx_subsy);
4283 fixp->fx_subsy = NULL;
4284 }
4285
4286 if (fixp->fx_addsy && fixp->fx_subsy)
4287 {
4288 asection *asec, *ssec;
4289
4290 asec = S_GET_SEGMENT (fixp->fx_addsy);
4291 ssec = S_GET_SEGMENT (fixp->fx_subsy);
4292
4293 /* If we have a difference between two different, non-absolute symbols
4294 we must generate two relocs (one for each symbol) and allow the
4295 linker to resolve them - relaxation may change the distances between
4296 symbols, even local symbols defined in the same section.
4297
4298 Unfortunately we cannot do this with assembler generated local labels
4299 because there can be multiple incarnations of the same label, with
4300 exactly the same name, in any given section and the linker will have
4301 no way to identify the correct one. Instead we just have to hope
4302 that no relaxation will occur between the local label and the other
4303 symbol in the expression.
4304
4305 Similarly we have to compute differences between symbols in the .eh_frame
4306 section as the linker is not smart enough to apply relocations there
4307 before attempting to process it. */
4308 if ((ssec != absolute_section || asec != absolute_section)
4309 && (fixp->fx_addsy != fixp->fx_subsy)
4310 && strcmp (ssec->name, ".eh_frame") != 0
4311 && ! S_IS_GAS_LOCAL (fixp->fx_addsy)
4312 && ! S_IS_GAS_LOCAL (fixp->fx_subsy))
4313 {
4314 arelent * reloc2 = XNEW (arelent);
4315
4316 relocs[0] = reloc2;
4317 relocs[1] = reloc;
4318
4319 reloc2->address = reloc->address;
4320 reloc2->howto = bfd_reloc_type_lookup (stdoutput,
4321 BFD_RELOC_MSP430_SYM_DIFF);
4322 reloc2->addend = - S_GET_VALUE (fixp->fx_subsy);
4323
4324 if (ssec == absolute_section)
4325 reloc2->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4326 else
4327 {
4328 reloc2->sym_ptr_ptr = XNEW (asymbol *);
4329 *reloc2->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_subsy);
4330 }
4331
4332 reloc->addend = fixp->fx_offset;
4333 if (asec == absolute_section)
4334 {
4335 reloc->addend += S_GET_VALUE (fixp->fx_addsy);
4336 reloc->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr;
4337 }
4338 else
4339 {
4340 reloc->sym_ptr_ptr = XNEW (asymbol *);
4341 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
4342 }
4343
4344 fixp->fx_pcrel = 0;
4345 fixp->fx_done = 1;
4346 return relocs;
4347 }
4348 else
4349 {
4350 char *fixpos = fixp->fx_where + fixp->fx_frag->fr_literal;
4351
4352 reloc->addend = (S_GET_VALUE (fixp->fx_addsy)
4353 - S_GET_VALUE (fixp->fx_subsy) + fixp->fx_offset);
4354
4355 switch (fixp->fx_r_type)
4356 {
4357 case BFD_RELOC_8:
4358 md_number_to_chars (fixpos, reloc->addend, 1);
4359 break;
4360
4361 case BFD_RELOC_16:
4362 md_number_to_chars (fixpos, reloc->addend, 2);
4363 break;
4364
4365 case BFD_RELOC_24:
4366 md_number_to_chars (fixpos, reloc->addend, 3);
4367 break;
4368
4369 case BFD_RELOC_32:
4370 md_number_to_chars (fixpos, reloc->addend, 4);
4371 break;
4372
4373 default:
4374 reloc->sym_ptr_ptr
4375 = (asymbol **) bfd_abs_section_ptr->symbol_ptr_ptr;
4376 return relocs;
4377 }
4378
4379 free (reloc);
4380 return & no_relocs;
4381 }
4382 }
4383 else
4384 {
4385 #if 0
4386 if (fixp->fx_r_type == BFD_RELOC_MSP430X_ABS16
4387 && S_GET_SEGMENT (fixp->fx_addsy) == absolute_section)
4388 {
4389 bfd_vma amount = S_GET_VALUE (fixp->fx_addsy);
4390 char *fixpos = fixp->fx_where + fixp->fx_frag->fr_literal;
4391
4392 md_number_to_chars (fixpos, amount, 2);
4393 free (reloc);
4394 return & no_relocs;
4395 }
4396 #endif
4397 reloc->sym_ptr_ptr = XNEW (asymbol *);
4398 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
4399 reloc->addend = fixp->fx_offset;
4400
4401 if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
4402 || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
4403 reloc->address = fixp->fx_offset;
4404 }
4405
4406 return relocs;
4407 }
4408
4409 int
4410 md_estimate_size_before_relax (fragS * fragP ATTRIBUTE_UNUSED,
4411 asection * segment_type ATTRIBUTE_UNUSED)
4412 {
4413 if (fragP->fr_symbol && S_GET_SEGMENT (fragP->fr_symbol) == segment_type)
4414 {
4415 /* This is a jump -> pcrel mode. Nothing to do much here.
4416 Return value == 2. */
4417 fragP->fr_subtype =
4418 ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_BITS10);
4419 }
4420 else if (fragP->fr_symbol)
4421 {
4422 /* It's got a segment, but it's not ours. Even if fr_symbol is in
4423 an absolute segment, we don't know a displacement until we link
4424 object files. So it will always be long. This also applies to
4425 labels in a subsegment of current. Liker may relax it to short
4426 jump later. Return value == 8. */
4427 fragP->fr_subtype =
4428 ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_WORD);
4429 }
4430 else
4431 {
4432 /* We know the abs value. may be it is a jump to fixed address.
4433 Impossible in our case, cause all constants already handled. */
4434 fragP->fr_subtype =
4435 ENCODE_RELAX (RELAX_LEN (fragP->fr_subtype), STATE_UNDEF);
4436 }
4437
4438 return md_relax_table[fragP->fr_subtype].rlx_length;
4439 }
4440
4441 void
4442 md_convert_frag (bfd * abfd ATTRIBUTE_UNUSED,
4443 asection * sec ATTRIBUTE_UNUSED,
4444 fragS * fragP)
4445 {
4446 char * where = 0;
4447 int rela = -1;
4448 int i;
4449 struct rcodes_s * cc = NULL;
4450 struct hcodes_s * hc = NULL;
4451
4452 switch (fragP->fr_subtype)
4453 {
4454 case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_BITS10):
4455 case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_BITS10):
4456 case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_BITS10):
4457 /* We do not have to convert anything here.
4458 Just apply a fix. */
4459 rela = BFD_RELOC_MSP430_10_PCREL;
4460 break;
4461
4462 case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_WORD):
4463 case ENCODE_RELAX (STATE_UNCOND_BRANCH, STATE_UNDEF):
4464 /* Convert uncond branch jmp lab -> br lab. */
4465 if (target_is_430x ())
4466 cc = msp430x_rcodes + 7;
4467 else
4468 cc = msp430_rcodes + 7;
4469 where = fragP->fr_literal + fragP->fr_fix;
4470 bfd_putl16 (cc->lop0, where);
4471 rela = BFD_RELOC_MSP430_RL_PCREL;
4472 fragP->fr_fix += 2;
4473 break;
4474
4475 case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_WORD):
4476 case ENCODE_RELAX (STATE_SIMPLE_BRANCH, STATE_UNDEF):
4477 {
4478 /* Other simple branches. */
4479 int insn = bfd_getl16 (fragP->fr_opcode);
4480
4481 insn &= 0xffff;
4482 /* Find actual instruction. */
4483 if (target_is_430x ())
4484 {
4485 for (i = 0; i < 7 && !cc; i++)
4486 if (msp430x_rcodes[i].sop == insn)
4487 cc = msp430x_rcodes + i;
4488 }
4489 else
4490 {
4491 for (i = 0; i < 7 && !cc; i++)
4492 if (msp430_rcodes[i].sop == insn)
4493 cc = & msp430_rcodes[i];
4494 }
4495
4496 if (!cc || !cc->name)
4497 as_fatal (_("internal inconsistency problem in %s: insn %04lx"),
4498 __FUNCTION__, (long) insn);
4499 where = fragP->fr_literal + fragP->fr_fix;
4500 bfd_putl16 (cc->lop0, where);
4501 bfd_putl16 (cc->lop1, where + 2);
4502 rela = BFD_RELOC_MSP430_RL_PCREL;
4503 fragP->fr_fix += 4;
4504 }
4505 break;
4506
4507 case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_WORD):
4508 case ENCODE_RELAX (STATE_NOOV_BRANCH, STATE_UNDEF):
4509 if (target_is_430x ())
4510 cc = msp430x_rcodes + 6;
4511 else
4512 cc = msp430_rcodes + 6;
4513 where = fragP->fr_literal + fragP->fr_fix;
4514 bfd_putl16 (cc->lop0, where);
4515 bfd_putl16 (cc->lop1, where + 2);
4516 bfd_putl16 (cc->lop2, where + 4);
4517 rela = BFD_RELOC_MSP430_RL_PCREL;
4518 fragP->fr_fix += 6;
4519 break;
4520
4521 case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_BITS10):
4522 {
4523 int insn = bfd_getl16 (fragP->fr_opcode + 2);
4524
4525 insn &= 0xffff;
4526 if (target_is_430x ())
4527 {
4528 for (i = 0; i < 4 && !hc; i++)
4529 if (msp430x_hcodes[i].op1 == insn)
4530 hc = msp430x_hcodes + i;
4531 }
4532 else
4533 {
4534 for (i = 0; i < 4 && !hc; i++)
4535 if (msp430_hcodes[i].op1 == insn)
4536 hc = &msp430_hcodes[i];
4537 }
4538 if (!hc || !hc->name)
4539 as_fatal (_("internal inconsistency problem in %s: ext. insn %04lx"),
4540 __FUNCTION__, (long) insn);
4541 rela = BFD_RELOC_MSP430_10_PCREL;
4542 /* Apply a fix for a first label if necessary.
4543 another fix will be applied to the next word of insn anyway. */
4544 if (hc->tlab == 2)
4545 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
4546 fragP->fr_offset, TRUE, rela);
4547 fragP->fr_fix += 2;
4548 }
4549
4550 break;
4551
4552 case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_WORD):
4553 case ENCODE_RELAX (STATE_EMUL_BRANCH, STATE_UNDEF):
4554 {
4555 int insn = bfd_getl16 (fragP->fr_opcode + 2);
4556
4557 insn &= 0xffff;
4558 if (target_is_430x ())
4559 {
4560 for (i = 0; i < 4 && !hc; i++)
4561 if (msp430x_hcodes[i].op1 == insn)
4562 hc = msp430x_hcodes + i;
4563 }
4564 else
4565 {
4566 for (i = 0; i < 4 && !hc; i++)
4567 if (msp430_hcodes[i].op1 == insn)
4568 hc = & msp430_hcodes[i];
4569 }
4570 if (!hc || !hc->name)
4571 as_fatal (_("internal inconsistency problem in %s: ext. insn %04lx"),
4572 __FUNCTION__, (long) insn);
4573 rela = BFD_RELOC_MSP430_RL_PCREL;
4574 where = fragP->fr_literal + fragP->fr_fix;
4575 bfd_putl16 (hc->lop0, where);
4576 bfd_putl16 (hc->lop1, where + 2);
4577 bfd_putl16 (hc->lop2, where + 4);
4578 fragP->fr_fix += 6;
4579 }
4580 break;
4581
4582 default:
4583 as_fatal (_("internal inconsistency problem in %s: %lx"),
4584 __FUNCTION__, (long) fragP->fr_subtype);
4585 break;
4586 }
4587
4588 /* Now apply fix. */
4589 fix_new (fragP, fragP->fr_fix, 2, fragP->fr_symbol,
4590 fragP->fr_offset, TRUE, rela);
4591 /* Just fixed 2 bytes. */
4592 fragP->fr_fix += 2;
4593 }
4594
4595 /* Relax fragment. Mostly stolen from hc11 and mcore
4596 which arches I think I know. */
4597
4598 long
4599 msp430_relax_frag (segT seg ATTRIBUTE_UNUSED, fragS * fragP,
4600 long stretch ATTRIBUTE_UNUSED)
4601 {
4602 long growth;
4603 offsetT aim = 0;
4604 symbolS *symbolP;
4605 const relax_typeS *this_type;
4606 const relax_typeS *start_type;
4607 relax_substateT next_state;
4608 relax_substateT this_state;
4609 const relax_typeS *table = md_relax_table;
4610
4611 /* Nothing to be done if the frag has already max size. */
4612 if (RELAX_STATE (fragP->fr_subtype) == STATE_UNDEF
4613 || RELAX_STATE (fragP->fr_subtype) == STATE_WORD)
4614 return 0;
4615
4616 if (RELAX_STATE (fragP->fr_subtype) == STATE_BITS10)
4617 {
4618 symbolP = fragP->fr_symbol;
4619 if (symbol_resolved_p (symbolP))
4620 as_fatal (_("internal inconsistency problem in %s: resolved symbol"),
4621 __FUNCTION__);
4622 /* We know the offset. calculate a distance. */
4623 aim = S_GET_VALUE (symbolP) - fragP->fr_address - fragP->fr_fix;
4624 }
4625
4626 if (!msp430_enable_relax)
4627 {
4628 /* Relaxation is not enabled. So, make all jump as long ones
4629 by setting 'aim' to quite high value. */
4630 aim = 0x7fff;
4631 }
4632
4633 this_state = fragP->fr_subtype;
4634 start_type = this_type = table + this_state;
4635
4636 if (aim < 0)
4637 {
4638 /* Look backwards. */
4639 for (next_state = this_type->rlx_more; next_state;)
4640 if (aim >= this_type->rlx_backward || !this_type->rlx_backward)
4641 next_state = 0;
4642 else
4643 {
4644 /* Grow to next state. */
4645 this_state = next_state;
4646 this_type = table + this_state;
4647 next_state = this_type->rlx_more;
4648 }
4649 }
4650 else
4651 {
4652 /* Look forwards. */
4653 for (next_state = this_type->rlx_more; next_state;)
4654 if (aim <= this_type->rlx_forward || !this_type->rlx_forward)
4655 next_state = 0;
4656 else
4657 {
4658 /* Grow to next state. */
4659 this_state = next_state;
4660 this_type = table + this_state;
4661 next_state = this_type->rlx_more;
4662 }
4663 }
4664
4665 growth = this_type->rlx_length - start_type->rlx_length;
4666 if (growth != 0)
4667 fragP->fr_subtype = this_state;
4668 return growth;
4669 }
4670
4671 /* Return FALSE if the fixup in fixp should be left alone and not
4672 adjusted. We return FALSE here so that linker relaxation will
4673 work. */
4674
4675 bfd_boolean
4676 msp430_fix_adjustable (struct fix *fixp ATTRIBUTE_UNUSED)
4677 {
4678 /* If the symbol is in a non-code section then it should be OK. */
4679 if (fixp->fx_addsy
4680 && ((S_GET_SEGMENT (fixp->fx_addsy)->flags & SEC_CODE) == 0))
4681 return TRUE;
4682
4683 return FALSE;
4684 }
4685
4686 /* Set the contents of the .MSP430.attributes section. */
4687
4688 void
4689 msp430_md_end (void)
4690 {
4691 if (check_for_nop)
4692 as_warn ("assembly finished without a possibly needed NOP instruction");
4693
4694 bfd_elf_add_proc_attr_int (stdoutput, OFBA_MSPABI_Tag_ISA,
4695 target_is_430x () ? 2 : 1);
4696
4697 bfd_elf_add_proc_attr_int (stdoutput, OFBA_MSPABI_Tag_Code_Model,
4698 large_model ? 2 : 1);
4699
4700 bfd_elf_add_proc_attr_int (stdoutput, OFBA_MSPABI_Tag_Data_Model,
4701 large_model ? 2 : 1);
4702 }
4703
4704 /* Returns FALSE if there is a msp430 specific reason why the
4705 subtraction of two same-section symbols cannot be computed by
4706 the assembler. */
4707
4708 bfd_boolean
4709 msp430_allow_local_subtract (expressionS * left,
4710 expressionS * right,
4711 segT section)
4712 {
4713 /* If the symbols are not in a code section then they are OK. */
4714 if ((section->flags & SEC_CODE) == 0)
4715 return TRUE;
4716
4717 if (S_IS_GAS_LOCAL (left->X_add_symbol) || S_IS_GAS_LOCAL (right->X_add_symbol))
4718 return TRUE;
4719
4720 if (left->X_add_symbol == right->X_add_symbol)
4721 return TRUE;
4722
4723 /* We have to assume that there may be instructions between the
4724 two symbols and that relaxation may increase the distance between
4725 them. */
4726 return FALSE;
4727 }
GDB Binutils - Deliverables
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