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Remove use of bfd_uint64_t and similar
[binutils-gdb.git] / gas / config / tc-z80.c
1 /* tc-z80.c -- Assemble code for the Zilog Z80, Z180, EZ80 and ASCII R800
2 Copyright (C) 2005-2022 Free Software Foundation, Inc.
3 Contributed by Arnold Metselaar <arnold_m@operamail.com>
4
5 This file is part of GAS, the GNU Assembler.
6
7 GAS is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3, or (at your option)
10 any later version.
11
12 GAS is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GAS; see the file COPYING. If not, write to the Free
19 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
20 02110-1301, USA. */
21
22 #include "as.h"
23 #include "safe-ctype.h"
24 #include "subsegs.h"
25 #include "elf/z80.h"
26 #include "dwarf2dbg.h"
27 #include "dw2gencfi.h"
28
29 /* Exported constants. */
30 const char comment_chars[] = ";\0";
31 const char line_comment_chars[] = "#;\0";
32 const char line_separator_chars[] = "\0";
33 const char EXP_CHARS[] = "eE\0";
34 const char FLT_CHARS[] = "RrDdFfSsHh\0";
35
36 /* For machine specific options. */
37 const char * md_shortopts = ""; /* None yet. */
38
39 enum options
40 {
41 OPTION_MARCH = OPTION_MD_BASE,
42 OPTION_MACH_Z80,
43 OPTION_MACH_R800,
44 OPTION_MACH_Z180,
45 OPTION_MACH_EZ80_Z80,
46 OPTION_MACH_EZ80_ADL,
47 OPTION_MACH_INST,
48 OPTION_MACH_NO_INST,
49 OPTION_MACH_IUD,
50 OPTION_MACH_WUD,
51 OPTION_MACH_FUD,
52 OPTION_MACH_IUP,
53 OPTION_MACH_WUP,
54 OPTION_MACH_FUP,
55 OPTION_FP_SINGLE_FORMAT,
56 OPTION_FP_DOUBLE_FORMAT,
57 OPTION_COMPAT_LL_PREFIX,
58 OPTION_COMPAT_COLONLESS,
59 OPTION_COMPAT_SDCC
60 };
61
62 #define INS_Z80 (1 << 0)
63 #define INS_R800 (1 << 1)
64 #define INS_GBZ80 (1 << 2)
65 #define INS_Z180 (1 << 3)
66 #define INS_EZ80 (1 << 4)
67 #define INS_Z80N (1 << 5)
68 #define INS_MARCH_MASK 0xffff
69
70 #define INS_IDX_HALF (1 << 16)
71 #define INS_IN_F_C (1 << 17)
72 #define INS_OUT_C_0 (1 << 18)
73 #define INS_SLI (1 << 19)
74 #define INS_ROT_II_LD (1 << 20) /* instructions like SLA (ii+d),r; which is: LD r,(ii+d); SLA r; LD (ii+d),r */
75 #define INS_TUNE_MASK 0xffff0000
76
77 #define INS_NOT_GBZ80 (INS_Z80 | INS_Z180 | INS_R800 | INS_EZ80 | INS_Z80N)
78
79 #define INS_ALL 0
80 #define INS_UNDOC (INS_IDX_HALF | INS_IN_F_C)
81 #define INS_UNPORT (INS_OUT_C_0 | INS_SLI | INS_ROT_II_LD)
82
83 struct option md_longopts[] =
84 {
85 { "march", required_argument, NULL, OPTION_MARCH},
86 { "z80", no_argument, NULL, OPTION_MACH_Z80},
87 { "r800", no_argument, NULL, OPTION_MACH_R800},
88 { "z180", no_argument, NULL, OPTION_MACH_Z180},
89 { "ez80", no_argument, NULL, OPTION_MACH_EZ80_Z80},
90 { "ez80-adl", no_argument, NULL, OPTION_MACH_EZ80_ADL},
91 { "fp-s", required_argument, NULL, OPTION_FP_SINGLE_FORMAT},
92 { "fp-d", required_argument, NULL, OPTION_FP_DOUBLE_FORMAT},
93 { "strict", no_argument, NULL, OPTION_MACH_FUD},
94 { "full", no_argument, NULL, OPTION_MACH_IUP},
95 { "with-inst", required_argument, NULL, OPTION_MACH_INST},
96 { "Wnins", required_argument, NULL, OPTION_MACH_INST},
97 { "without-inst", required_argument, NULL, OPTION_MACH_NO_INST},
98 { "local-prefix", required_argument, NULL, OPTION_COMPAT_LL_PREFIX},
99 { "colonless", no_argument, NULL, OPTION_COMPAT_COLONLESS},
100 { "sdcc", no_argument, NULL, OPTION_COMPAT_SDCC},
101 { "Fins", required_argument, NULL, OPTION_MACH_NO_INST},
102 { "ignore-undocumented-instructions", no_argument, NULL, OPTION_MACH_IUD },
103 { "Wnud", no_argument, NULL, OPTION_MACH_IUD },
104 { "warn-undocumented-instructions", no_argument, NULL, OPTION_MACH_WUD },
105 { "Wud", no_argument, NULL, OPTION_MACH_WUD },
106 { "forbid-undocumented-instructions", no_argument, NULL, OPTION_MACH_FUD },
107 { "Fud", no_argument, NULL, OPTION_MACH_FUD },
108 { "ignore-unportable-instructions", no_argument, NULL, OPTION_MACH_IUP },
109 { "Wnup", no_argument, NULL, OPTION_MACH_IUP },
110 { "warn-unportable-instructions", no_argument, NULL, OPTION_MACH_WUP },
111 { "Wup", no_argument, NULL, OPTION_MACH_WUP },
112 { "forbid-unportable-instructions", no_argument, NULL, OPTION_MACH_FUP },
113 { "Fup", no_argument, NULL, OPTION_MACH_FUP },
114
115 { NULL, no_argument, NULL, 0 }
116 } ;
117
118 size_t md_longopts_size = sizeof (md_longopts);
119
120 extern int coff_flags;
121 /* Instruction classes that silently assembled. */
122 static int ins_ok = INS_Z80 | INS_UNDOC;
123 /* Instruction classes that generate errors. */
124 static int ins_err = ~(INS_Z80 | INS_UNDOC);
125 /* eZ80 CPU mode (ADL or Z80) */
126 static int cpu_mode = 0; /* 0 - Z80, 1 - ADL */
127 /* accept SDCC specific instruction encoding */
128 static int sdcc_compat = 0;
129 /* accept colonless labels */
130 static int colonless_labels = 0;
131 /* local label prefix (NULL - default) */
132 static const char *local_label_prefix = NULL;
133 /* floating point support */
134 typedef const char *(*str_to_float_t)(char *litP, int *sizeP);
135 static str_to_float_t str_to_float;
136 static str_to_float_t str_to_double;
137
138 /* mode of current instruction */
139 #define INST_MODE_S 0 /* short data mode */
140 #define INST_MODE_IS 0 /* short instruction mode */
141 #define INST_MODE_L 2 /* long data mode */
142 #define INST_MODE_IL 1 /* long instruction mode */
143 #define INST_MODE_FORCED 4 /* CPU mode changed by instruction suffix*/
144 static char inst_mode;
145
146 struct match_info
147 {
148 const char *name;
149 int ins_ok;
150 int ins_err;
151 int cpu_mode;
152 const char *comment;
153 };
154
155 static const struct match_info
156 match_cpu_table [] =
157 {
158 {"z80", INS_Z80, 0, 0, "Zilog Z80" },
159 {"ez80", INS_EZ80, 0, 0, "Zilog eZ80" },
160 {"gbz80", INS_GBZ80, INS_UNDOC|INS_UNPORT, 0, "GameBoy Z80" },
161 {"r800", INS_R800, INS_UNPORT, 0, "Ascii R800" },
162 {"z180", INS_Z180, INS_UNDOC|INS_UNPORT, 0, "Zilog Z180" },
163 {"z80n", INS_Z80N, 0, 0, "Z80 Next" }
164 };
165
166 static const struct match_info
167 match_ext_table [] =
168 {
169 {"full", INS_UNDOC|INS_UNPORT, 0, 0, "assemble all known instructions" },
170 {"adl", 0, 0, 1, "eZ80 ADL mode by default" },
171 {"xyhl", INS_IDX_HALF, 0, 0, "instructions with halves of index registers" },
172 {"infc", INS_IN_F_C, 0, 0, "instruction IN F,(C)" },
173 {"outc0", INS_OUT_C_0, 0, 0, "instruction OUT (C),0" },
174 {"sli", INS_SLI, 0, 0, "instruction known as SLI, SLL, or SL1" },
175 {"xdcb", INS_ROT_II_LD, 0, 0, "instructions like RL (IX+d),R (DD/FD CB dd oo)" }
176 };
177
178
179 static int signed_overflow (signed long value, unsigned bitsize);
180 static int unsigned_overflow (unsigned long value, unsigned bitsize);
181 static int is_overflow (long value, unsigned bitsize);
182
183 static void
184 setup_march (const char *name, int *ok, int *err, int *mode)
185 {
186 unsigned i;
187 size_t len = strcspn (name, "+-");
188 for (i = 0; i < ARRAY_SIZE (match_cpu_table); ++i)
189 if (!strncasecmp (name, match_cpu_table[i].name, len)
190 && strlen (match_cpu_table[i].name) == len)
191 {
192 *ok = match_cpu_table[i].ins_ok;
193 *err = match_cpu_table[i].ins_err;
194 *mode = match_cpu_table[i].cpu_mode;
195 break;
196 }
197
198 if (i >= ARRAY_SIZE (match_cpu_table))
199 as_fatal (_("Invalid CPU is specified: %s"), name);
200
201 while (name[len])
202 {
203 name = &name[len + 1];
204 len = strcspn (name, "+-");
205 for (i = 0; i < ARRAY_SIZE (match_ext_table); ++i)
206 if (!strncasecmp (name, match_ext_table[i].name, len)
207 && strlen (match_ext_table[i].name) == len)
208 {
209 if (name[-1] == '+')
210 {
211 *ok |= match_ext_table[i].ins_ok;
212 *err &= ~match_ext_table[i].ins_ok;
213 *mode |= match_ext_table[i].cpu_mode;
214 }
215 else
216 {
217 *ok &= ~match_ext_table[i].ins_ok;
218 *err |= match_ext_table[i].ins_ok;
219 *mode &= ~match_ext_table[i].cpu_mode;
220 }
221 break;
222 }
223 if (i >= ARRAY_SIZE (match_ext_table))
224 as_fatal (_("Invalid EXTENSION is specified: %s"), name);
225 }
226 }
227
228 static int
229 setup_instruction (const char *inst, int *add, int *sub)
230 {
231 int n;
232 if (!strcmp (inst, "idx-reg-halves"))
233 n = INS_IDX_HALF;
234 else if (!strcmp (inst, "sli"))
235 n = INS_SLI;
236 else if (!strcmp (inst, "op-ii-ld"))
237 n = INS_ROT_II_LD;
238 else if (!strcmp (inst, "in-f-c"))
239 n = INS_IN_F_C;
240 else if (!strcmp (inst, "out-c-0"))
241 n = INS_OUT_C_0;
242 else
243 return 0;
244 *add |= n;
245 *sub &= ~n;
246 return 1;
247 }
248
249 static const char *
250 str_to_zeda32 (char *litP, int *sizeP);
251 static const char *
252 str_to_float48 (char *litP, int *sizeP);
253 static const char *
254 str_to_ieee754_h (char *litP, int *sizeP);
255 static const char *
256 str_to_ieee754_s (char *litP, int *sizeP);
257 static const char *
258 str_to_ieee754_d (char *litP, int *sizeP);
259
260 static str_to_float_t
261 get_str_to_float (const char *arg)
262 {
263 if (strcasecmp (arg, "zeda32") == 0)
264 return str_to_zeda32;
265
266 if (strcasecmp (arg, "math48") == 0)
267 return str_to_float48;
268
269 if (strcasecmp (arg, "half") != 0)
270 return str_to_ieee754_h;
271
272 if (strcasecmp (arg, "single") != 0)
273 return str_to_ieee754_s;
274
275 if (strcasecmp (arg, "double") != 0)
276 return str_to_ieee754_d;
277
278 if (strcasecmp (arg, "ieee754") == 0)
279 as_fatal (_("invalid floating point numbers type `%s'"), arg);
280 return NULL;
281 }
282
283 static int
284 setup_instruction_list (const char *list, int *add, int *sub)
285 {
286 char buf[16];
287 const char *b;
288 const char *e;
289 int sz;
290 int res = 0;
291 for (b = list; *b != '\0';)
292 {
293 e = strchr (b, ',');
294 if (e == NULL)
295 sz = strlen (b);
296 else
297 sz = e - b;
298 if (sz == 0 || sz >= (int)sizeof (buf))
299 {
300 as_bad (_("invalid INST in command line: %s"), b);
301 return 0;
302 }
303 memcpy (buf, b, sz);
304 buf[sz] = '\0';
305 if (setup_instruction (buf, add, sub))
306 res++;
307 else
308 {
309 as_bad (_("invalid INST in command line: %s"), buf);
310 return 0;
311 }
312 b = &b[sz];
313 if (*b == ',')
314 ++b;
315 }
316 return res;
317 }
318
319 int
320 md_parse_option (int c, const char* arg)
321 {
322 switch (c)
323 {
324 default:
325 return 0;
326 case OPTION_MARCH:
327 setup_march (arg, & ins_ok, & ins_err, & cpu_mode);
328 break;
329 case OPTION_MACH_Z80:
330 setup_march ("z80", & ins_ok, & ins_err, & cpu_mode);
331 break;
332 case OPTION_MACH_R800:
333 setup_march ("r800", & ins_ok, & ins_err, & cpu_mode);
334 break;
335 case OPTION_MACH_Z180:
336 setup_march ("z180", & ins_ok, & ins_err, & cpu_mode);
337 break;
338 case OPTION_MACH_EZ80_Z80:
339 setup_march ("ez80", & ins_ok, & ins_err, & cpu_mode);
340 break;
341 case OPTION_MACH_EZ80_ADL:
342 setup_march ("ez80+adl", & ins_ok, & ins_err, & cpu_mode);
343 break;
344 case OPTION_FP_SINGLE_FORMAT:
345 str_to_float = get_str_to_float (arg);
346 break;
347 case OPTION_FP_DOUBLE_FORMAT:
348 str_to_double = get_str_to_float (arg);
349 break;
350 case OPTION_MACH_INST:
351 if ((ins_ok & INS_GBZ80) == 0)
352 return setup_instruction_list (arg, & ins_ok, & ins_err);
353 break;
354 case OPTION_MACH_NO_INST:
355 if ((ins_ok & INS_GBZ80) == 0)
356 return setup_instruction_list (arg, & ins_err, & ins_ok);
357 break;
358 case OPTION_MACH_WUD:
359 case OPTION_MACH_IUD:
360 if ((ins_ok & INS_GBZ80) == 0)
361 {
362 ins_ok |= INS_UNDOC;
363 ins_err &= ~INS_UNDOC;
364 }
365 break;
366 case OPTION_MACH_WUP:
367 case OPTION_MACH_IUP:
368 if ((ins_ok & INS_GBZ80) == 0)
369 {
370 ins_ok |= INS_UNDOC | INS_UNPORT;
371 ins_err &= ~(INS_UNDOC | INS_UNPORT);
372 }
373 break;
374 case OPTION_MACH_FUD:
375 if ((ins_ok & (INS_R800 | INS_GBZ80)) == 0)
376 {
377 ins_ok &= (INS_UNDOC | INS_UNPORT);
378 ins_err |= INS_UNDOC | INS_UNPORT;
379 }
380 break;
381 case OPTION_MACH_FUP:
382 ins_ok &= ~INS_UNPORT;
383 ins_err |= INS_UNPORT;
384 break;
385 case OPTION_COMPAT_LL_PREFIX:
386 local_label_prefix = (arg && *arg) ? arg : NULL;
387 break;
388 case OPTION_COMPAT_SDCC:
389 sdcc_compat = 1;
390 break;
391 case OPTION_COMPAT_COLONLESS:
392 colonless_labels = 1;
393 break;
394 }
395
396 return 1;
397 }
398
399 void
400 md_show_usage (FILE * f)
401 {
402 unsigned i;
403 fprintf (f, _("\n\
404 CPU model options:\n\
405 -march=CPU[+EXT...][-EXT...]\n\
406 \t\t\t generate code for CPU, where CPU is one of:\n"));
407 for (i = 0; i < ARRAY_SIZE(match_cpu_table); ++i)
408 fprintf (f, " %-8s\t\t %s\n", match_cpu_table[i].name, match_cpu_table[i].comment);
409 fprintf (f, _("And EXT is combination (+EXT - add, -EXT - remove) of:\n"));
410 for (i = 0; i < ARRAY_SIZE(match_ext_table); ++i)
411 fprintf (f, " %-8s\t\t %s\n", match_ext_table[i].name, match_ext_table[i].comment);
412 fprintf (f, _("\n\
413 Compatibility options:\n\
414 -local-prefix=TEXT\t treat labels prefixed by TEXT as local\n\
415 -colonless\t\t permit colonless labels\n\
416 -sdcc\t\t\t accept SDCC specific instruction syntax\n\
417 -fp-s=FORMAT\t\t set single precision FP numbers format\n\
418 -fp-d=FORMAT\t\t set double precision FP numbers format\n\
419 Where FORMAT one of:\n\
420 ieee754\t\t IEEE754 compatible (depends on directive)\n\
421 half\t\t\t IEEE754 half precision (16 bit)\n\
422 single\t\t IEEE754 single precision (32 bit)\n\
423 double\t\t IEEE754 double precision (64 bit)\n\
424 zeda32\t\t Zeda z80float library 32 bit format\n\
425 math48\t\t 48 bit format from Math48 library\n\
426 \n\
427 Default: -march=z80+xyhl+infc\n"));
428 }
429
430 static symbolS * zero;
431
432 struct reg_entry
433 {
434 const char* name;
435 int number;
436 int isa;
437 };
438 #define R_STACKABLE (0x80)
439 #define R_ARITH (0x40)
440 #define R_IX (0x20)
441 #define R_IY (0x10)
442 #define R_INDEX (R_IX | R_IY)
443
444 #define REG_A (7)
445 #define REG_B (0)
446 #define REG_C (1)
447 #define REG_D (2)
448 #define REG_E (3)
449 #define REG_H (4)
450 #define REG_L (5)
451 #define REG_F (6 | 8)
452 #define REG_I (9)
453 #define REG_R (10)
454 #define REG_MB (11)
455
456 #define REG_AF (3 | R_STACKABLE)
457 #define REG_BC (0 | R_STACKABLE | R_ARITH)
458 #define REG_DE (1 | R_STACKABLE | R_ARITH)
459 #define REG_HL (2 | R_STACKABLE | R_ARITH)
460 #define REG_IX (REG_HL | R_IX)
461 #define REG_IY (REG_HL | R_IY)
462 #define REG_SP (3 | R_ARITH)
463
464 static const struct reg_entry regtable[] =
465 {
466 {"a", REG_A, INS_ALL },
467 {"af", REG_AF, INS_ALL },
468 {"b", REG_B, INS_ALL },
469 {"bc", REG_BC, INS_ALL },
470 {"c", REG_C, INS_ALL },
471 {"d", REG_D, INS_ALL },
472 {"de", REG_DE, INS_ALL },
473 {"e", REG_E, INS_ALL },
474 {"f", REG_F, INS_IN_F_C | INS_Z80N | INS_R800 },
475 {"h", REG_H, INS_ALL },
476 {"hl", REG_HL, INS_ALL },
477 {"i", REG_I, INS_NOT_GBZ80 },
478 {"ix", REG_IX, INS_NOT_GBZ80 },
479 {"ixh", REG_H | R_IX, INS_IDX_HALF | INS_EZ80 | INS_R800 | INS_Z80N },
480 {"ixl", REG_L | R_IX, INS_IDX_HALF | INS_EZ80 | INS_R800 | INS_Z80N },
481 {"iy", REG_IY, INS_NOT_GBZ80 },
482 {"iyh", REG_H | R_IY, INS_IDX_HALF | INS_EZ80 | INS_R800 | INS_Z80N },
483 {"iyl", REG_L | R_IY, INS_IDX_HALF | INS_EZ80 | INS_R800 | INS_Z80N },
484 {"l", REG_L, INS_ALL },
485 {"mb", REG_MB, INS_EZ80 },
486 {"r", REG_R, INS_NOT_GBZ80 },
487 {"sp", REG_SP, INS_ALL },
488 } ;
489
490 #define BUFLEN 8 /* Large enough for any keyword. */
491
492 void
493 md_begin (void)
494 {
495 expressionS nul, reg;
496 char * p;
497 unsigned int i, j, k;
498 char buf[BUFLEN];
499
500 memset (&reg, 0, sizeof (reg));
501 memset (&nul, 0, sizeof (nul));
502
503 if (ins_ok & INS_EZ80) /* if select EZ80 cpu then */
504 listing_lhs_width = 6; /* use 6 bytes per line in the listing */
505
506 reg.X_op = O_register;
507 reg.X_md = 0;
508 reg.X_add_symbol = reg.X_op_symbol = 0;
509 for ( i = 0 ; i < ARRAY_SIZE ( regtable ) ; ++i )
510 {
511 if (regtable[i].isa && !(regtable[i].isa & ins_ok))
512 continue;
513 reg.X_add_number = regtable[i].number;
514 k = strlen ( regtable[i].name );
515 buf[k] = 0;
516 if ( k+1 < BUFLEN )
517 {
518 for ( j = ( 1<<k ) ; j ; --j )
519 {
520 for ( k = 0 ; regtable[i].name[k] ; ++k )
521 {
522 buf[k] = ( j & ( 1<<k ) ) ? TOUPPER (regtable[i].name[k]) : regtable[i].name[k];
523 }
524 symbolS * psym = symbol_find_or_make (buf);
525 S_SET_SEGMENT (psym, reg_section);
526 symbol_set_value_expression (psym, &reg);
527 }
528 }
529 }
530 p = input_line_pointer;
531 input_line_pointer = (char *) "0";
532 nul.X_md=0;
533 expression (& nul);
534 input_line_pointer = p;
535 zero = make_expr_symbol (& nul);
536 /* We do not use relaxation (yet). */
537 linkrelax = 0;
538 }
539
540 void
541 z80_md_end (void)
542 {
543 int mach_type;
544
545 switch (ins_ok & INS_MARCH_MASK)
546 {
547 case INS_Z80:
548 mach_type = bfd_mach_z80;
549 break;
550 case INS_R800:
551 mach_type = bfd_mach_r800;
552 break;
553 case INS_Z180:
554 mach_type = bfd_mach_z180;
555 break;
556 case INS_GBZ80:
557 mach_type = bfd_mach_gbz80;
558 break;
559 case INS_EZ80:
560 mach_type = cpu_mode ? bfd_mach_ez80_adl : bfd_mach_ez80_z80;
561 break;
562 case INS_Z80N:
563 mach_type = bfd_mach_z80n;
564 break;
565 default:
566 mach_type = 0;
567 }
568 bfd_set_arch_mach (stdoutput, TARGET_ARCH, mach_type);
569 }
570
571 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
572 void
573 z80_elf_final_processing (void)
574 {/* nothing to do, all is done by BFD itself */
575 /*
576 unsigned elf_flags;
577 elf_elfheader (stdoutput)->e_flags = elf_flags;
578 */
579 }
580 #endif
581
582 static const char *
583 skip_space (const char *s)
584 {
585 while (*s == ' ' || *s == '\t')
586 ++s;
587 return s;
588 }
589
590 /* A non-zero return-value causes a continue in the
591 function read_a_source_file () in ../read.c. */
592 int
593 z80_start_line_hook (void)
594 {
595 char *p, quote;
596 char buf[4];
597
598 /* Convert one character constants. */
599 for (p = input_line_pointer; *p && *p != '\n'; ++p)
600 {
601 switch (*p)
602 {
603 case '\'':
604 if (p[1] != 0 && p[1] != '\'' && p[2] == '\'')
605 {
606 snprintf (buf, 4, "%3d", (unsigned char)p[1]);
607 *p++ = buf[0];
608 *p++ = buf[1];
609 *p++ = buf[2];
610 break;
611 }
612 /* Fall through. */
613 case '"':
614 for (quote = *p++; quote != *p && '\n' != *p; ++p)
615 /* No escapes. */ ;
616 if (quote != *p)
617 {
618 as_bad (_("-- unterminated string"));
619 ignore_rest_of_line ();
620 return 1;
621 }
622 break;
623 case '#': /* force to use next expression as immediate value in SDCC */
624 if (!sdcc_compat)
625 break;
626 if (ISSPACE(p[1]) && *skip_space (p + 1) == '(')
627 { /* ld a,# (expr)... -> ld a,0+(expr)... */
628 *p++ = '0';
629 *p = '+';
630 }
631 else /* ld a,#(expr)... -> ld a,+(expr); ld a,#expr -> ld a, expr */
632 *p = (p[1] == '(') ? '+' : ' ';
633 break;
634 }
635 }
636 /* Check for <label>[:] =|([.](EQU|DEFL)) <value>. */
637 if (is_name_beginner (*input_line_pointer))
638 {
639 char *name;
640 char c, *rest, *line_start;
641 int len;
642
643 line_start = input_line_pointer;
644 if (ignore_input ())
645 return 0;
646 c = get_symbol_name (&name);
647 rest = input_line_pointer + 1;
648 if (c == ':' && *rest == ':')
649 {
650 /* remove second colon if SDCC compatibility enabled */
651 if (sdcc_compat)
652 *rest = ' ';
653 ++rest;
654 }
655 rest = (char*)skip_space (rest);
656 if (*rest == '=')
657 len = (rest[1] == '=') ? 2 : 1;
658 else
659 {
660 if (*rest == '.')
661 ++rest;
662 if (strncasecmp (rest, "EQU", 3) == 0)
663 len = 3;
664 else if (strncasecmp (rest, "DEFL", 4) == 0)
665 len = 4;
666 else
667 len = 0;
668 }
669 if (len && (len <= 2 || !ISALPHA (rest[len])))
670 {
671 /* Handle assignment here. */
672 if (line_start[-1] == '\n')
673 {
674 bump_line_counters ();
675 LISTING_NEWLINE ();
676 }
677 input_line_pointer = rest + len - 1;
678 /* Allow redefining with "DEFL" (len == 4), but not with "EQU". */
679 switch (len)
680 {
681 case 1: /* label = expr */
682 case 4: /* label DEFL expr */
683 equals (name, 1);
684 break;
685 case 2: /* label == expr */
686 case 3: /* label EQU expr */
687 equals (name, 0);
688 break;
689 }
690 return 1;
691 }
692 else
693 {
694 /* Restore line and pointer. */
695 (void) restore_line_pointer (c);
696 input_line_pointer = line_start;
697 }
698 }
699 return 0;
700 }
701
702 symbolS *
703 md_undefined_symbol (char *name ATTRIBUTE_UNUSED)
704 {
705 return NULL;
706 }
707
708 const char *
709 md_atof (int type, char *litP, int *sizeP)
710 {
711 switch (type)
712 {
713 case 'f':
714 case 'F':
715 case 's':
716 case 'S':
717 if (str_to_float)
718 return str_to_float (litP, sizeP);
719 break;
720 case 'd':
721 case 'D':
722 case 'r':
723 case 'R':
724 if (str_to_double)
725 return str_to_double (litP, sizeP);
726 break;
727 }
728 return ieee_md_atof (type, litP, sizeP, false);
729 }
730
731 valueT
732 md_section_align (segT seg ATTRIBUTE_UNUSED, valueT size)
733 {
734 return size;
735 }
736
737 long
738 md_pcrel_from (fixS * fixp)
739 {
740 return fixp->fx_where + fixp->fx_frag->fr_address;
741 }
742
743 typedef const char * (asfunc)(char, char, const char*);
744
745 typedef struct _table_t
746 {
747 const char* name;
748 unsigned char prefix;
749 unsigned char opcode;
750 asfunc * fp;
751 unsigned inss; /*0 - all CPU types or list of supported INS_* */
752 } table_t;
753
754 /* Compares the key for structs that start with a char * to the key. */
755 static int
756 key_cmp (const void * a, const void * b)
757 {
758 const char *str_a, *str_b;
759
760 str_a = *((const char**)a);
761 str_b = *((const char**)b);
762 return strcmp (str_a, str_b);
763 }
764
765 char buf[BUFLEN];
766 const char *key = buf;
767
768 /* Prevent an error on a line from also generating
769 a "junk at end of line" error message. */
770 static char err_flag;
771
772 static void
773 error (const char * message)
774 {
775 if (err_flag)
776 return;
777
778 as_bad ("%s", message);
779 err_flag = 1;
780 }
781
782 static void
783 ill_op (void)
784 {
785 error (_("illegal operand"));
786 }
787
788 static void
789 wrong_mach (int ins_type)
790 {
791 if (ins_type & ins_err)
792 ill_op ();
793 else
794 as_warn (_("undocumented instruction"));
795 }
796
797 static void
798 check_mach (int ins_type)
799 {
800 if ((ins_type & ins_ok) == 0)
801 wrong_mach (ins_type);
802 }
803
804 /* Check whether an expression is indirect. */
805 static int
806 is_indir (const char *s)
807 {
808 char quote;
809 const char *p;
810 int indir, depth;
811
812 /* Indirection is indicated with parentheses. */
813 indir = (*s == '(');
814
815 for (p = s, depth = 0; *p && *p != ','; ++p)
816 {
817 switch (*p)
818 {
819 case '"':
820 case '\'':
821 for (quote = *p++; quote != *p && *p != '\n'; ++p)
822 if (*p == '\\' && p[1])
823 ++p;
824 break;
825 case '(':
826 ++ depth;
827 break;
828 case ')':
829 -- depth;
830 if (depth == 0)
831 {
832 p = skip_space (p + 1);
833 if (*p && *p != ',')
834 indir = 0;
835 --p;
836 }
837 if (depth < 0)
838 error (_("mismatched parentheses"));
839 break;
840 }
841 }
842
843 if (depth != 0)
844 error (_("mismatched parentheses"));
845
846 return indir;
847 }
848
849 /* Check whether a symbol involves a register. */
850 static bool
851 contains_register (symbolS *sym)
852 {
853 if (sym)
854 {
855 expressionS * ex = symbol_get_value_expression (sym);
856
857 switch (ex->X_op)
858 {
859 case O_register:
860 return true;
861
862 case O_add:
863 case O_subtract:
864 if (ex->X_op_symbol && contains_register (ex->X_op_symbol))
865 return true;
866 /* Fall through. */
867 case O_uminus:
868 case O_symbol:
869 if (ex->X_add_symbol && contains_register (ex->X_add_symbol))
870 return true;
871 break;
872
873 default:
874 break;
875 }
876 }
877
878 return false;
879 }
880
881 /* Parse general expression, not looking for indexed addressing. */
882 static const char *
883 parse_exp_not_indexed (const char *s, expressionS *op)
884 {
885 const char *p;
886 int indir;
887 int make_shift = -1;
888
889 memset (op, 0, sizeof (*op));
890 p = skip_space (s);
891 if (sdcc_compat && (*p == '<' || *p == '>'))
892 {
893 switch (*p)
894 {
895 case '<': /* LSB request */
896 make_shift = 0;
897 break;
898 case '>': /* MSB request */
899 make_shift = cpu_mode ? 16 : 8;
900 break;
901 }
902 s = ++p;
903 p = skip_space (p);
904 }
905
906 if (make_shift == -1)
907 indir = is_indir (p);
908 else
909 indir = 0;
910 op->X_md = indir;
911 if (indir && (ins_ok & INS_GBZ80))
912 { /* check for instructions like ld a,(hl+), ld (hl-),a */
913 p = skip_space (p+1);
914 if (!strncasecmp (p, "hl", 2))
915 {
916 p = skip_space(p+2);
917 if (*skip_space(p+1) == ')' && (*p == '+' || *p == '-'))
918 {
919 op->X_op = O_md1;
920 op->X_add_symbol = NULL;
921 op->X_add_number = (*p == '+') ? REG_HL : -REG_HL;
922 input_line_pointer = (char*)skip_space(p + 1) + 1;
923 return input_line_pointer;
924 }
925 }
926 }
927 input_line_pointer = (char*) s ;
928 expression (op);
929 switch (op->X_op)
930 {
931 case O_absent:
932 error (_("missing operand"));
933 break;
934 case O_illegal:
935 error (_("bad expression syntax"));
936 break;
937 default:
938 break;
939 }
940
941 if (make_shift >= 0)
942 {
943 /* replace [op] by [op >> shift] */
944 expressionS data;
945 op->X_add_symbol = make_expr_symbol (op);
946 op->X_add_number = 0;
947 op->X_op = O_right_shift;
948 memset (&data, 0, sizeof (data));
949 data.X_op = O_constant;
950 data.X_add_number = make_shift;
951 op->X_op_symbol = make_expr_symbol (&data);
952 }
953 return input_line_pointer;
954 }
955
956 static int
957 unify_indexed (expressionS *op)
958 {
959 if (O_register != symbol_get_value_expression (op->X_add_symbol)->X_op)
960 return 0;
961
962 int rnum = symbol_get_value_expression (op->X_add_symbol)->X_add_number;
963 if ( ((REG_IX != rnum) && (REG_IY != rnum)) || contains_register (op->X_op_symbol))
964 {
965 ill_op ();
966 return 0;
967 }
968
969 /* Convert subtraction to addition of negative value. */
970 if (O_subtract == op->X_op)
971 {
972 expressionS minus;
973 memset (&minus, 0, sizeof (minus));
974 minus.X_op = O_uminus;
975 minus.X_add_symbol = op->X_op_symbol;
976 op->X_op_symbol = make_expr_symbol (&minus);
977 op->X_op = O_add;
978 }
979
980 /* Clear X_add_number of the expression. */
981 if (op->X_add_number != 0)
982 {
983 expressionS add;
984 memset (&add, 0, sizeof (add));
985 add.X_op = O_symbol;
986 add.X_add_number = op->X_add_number;
987 add.X_add_symbol = op->X_op_symbol;
988 op->X_add_symbol = make_expr_symbol (&add);
989 }
990 else
991 op->X_add_symbol = op->X_op_symbol;
992
993 op->X_add_number = rnum;
994 op->X_op_symbol = 0;
995 return 1;
996 }
997
998 /* Parse expression, change operator to O_md1 for indexed addressing. */
999 static const char *
1000 parse_exp (const char *s, expressionS *op)
1001 {
1002 const char* res = parse_exp_not_indexed (s, op);
1003 switch (op->X_op)
1004 {
1005 case O_add:
1006 case O_subtract:
1007 if (unify_indexed (op) && op->X_md)
1008 op->X_op = O_md1;
1009 break;
1010 case O_register:
1011 if (op->X_md && ((REG_IX == op->X_add_number) || (REG_IY == op->X_add_number)))
1012 {
1013 op->X_add_symbol = zero;
1014 op->X_op = O_md1;
1015 }
1016 break;
1017 case O_constant:
1018 /* parse SDCC syntax where index register offset placed before parentheses */
1019 if (sdcc_compat && is_indir (res))
1020 {
1021 expressionS off;
1022 off = *op;
1023 res = parse_exp (res, op);
1024 if (op->X_op != O_md1 || op->X_add_symbol != zero)
1025 ill_op ();
1026 else
1027 op->X_add_symbol = make_expr_symbol (&off);
1028 }
1029 break;
1030 default:
1031 break;
1032 }
1033 return res;
1034 }
1035
1036 /* Condition codes, including some synonyms provided by HiTech zas. */
1037 static const struct reg_entry cc_tab[] =
1038 {
1039 { "age", 6 << 3, INS_ALL },
1040 { "alt", 7 << 3, INS_ALL },
1041 { "c", 3 << 3, INS_ALL },
1042 { "di", 4 << 3, INS_ALL },
1043 { "ei", 5 << 3, INS_ALL },
1044 { "lge", 2 << 3, INS_ALL },
1045 { "llt", 3 << 3, INS_ALL },
1046 { "m", 7 << 3, INS_ALL },
1047 { "nc", 2 << 3, INS_ALL },
1048 { "nz", 0 << 3, INS_ALL },
1049 { "p", 6 << 3, INS_ALL },
1050 { "pe", 5 << 3, INS_ALL },
1051 { "po", 4 << 3, INS_ALL },
1052 { "z", 1 << 3, INS_ALL },
1053 } ;
1054
1055 /* Parse condition code. */
1056 static const char *
1057 parse_cc (const char *s, char * op)
1058 {
1059 const char *p;
1060 int i;
1061 struct reg_entry * cc_p;
1062
1063 for (i = 0; i < BUFLEN; ++i)
1064 {
1065 if (!ISALPHA (s[i])) /* Condition codes consist of letters only. */
1066 break;
1067 buf[i] = TOLOWER (s[i]);
1068 }
1069
1070 if ((i < BUFLEN)
1071 && ((s[i] == 0) || (s[i] == ',')))
1072 {
1073 buf[i] = 0;
1074 cc_p = bsearch (&key, cc_tab, ARRAY_SIZE (cc_tab),
1075 sizeof (cc_tab[0]), key_cmp);
1076 }
1077 else
1078 cc_p = NULL;
1079
1080 if (cc_p)
1081 {
1082 *op = cc_p->number;
1083 p = s + i;
1084 }
1085 else
1086 p = NULL;
1087
1088 return p;
1089 }
1090
1091 static const char *
1092 emit_insn (char prefix, char opcode, const char * args)
1093 {
1094 char *p;
1095
1096 if (prefix)
1097 {
1098 p = frag_more (2);
1099 *p++ = prefix;
1100 }
1101 else
1102 p = frag_more (1);
1103 *p = opcode;
1104 return args;
1105 }
1106
1107 void z80_cons_fix_new (fragS *frag_p, int offset, int nbytes, expressionS *exp)
1108 {
1109 bfd_reloc_code_real_type r[4] =
1110 {
1111 BFD_RELOC_8,
1112 BFD_RELOC_16,
1113 BFD_RELOC_24,
1114 BFD_RELOC_32
1115 };
1116
1117 if (nbytes < 1 || nbytes > 4)
1118 {
1119 as_bad (_("unsupported BFD relocation size %u"), nbytes);
1120 }
1121 else
1122 {
1123 fix_new_exp (frag_p, offset, nbytes, exp, 0, r[nbytes-1]);
1124 }
1125 }
1126
1127 static void
1128 emit_data_val (expressionS * val, int size)
1129 {
1130 char *p;
1131 bfd_reloc_code_real_type r_type;
1132
1133 p = frag_more (size);
1134 if (val->X_op == O_constant)
1135 {
1136 int i;
1137
1138 /* PR 28791:
1139 Check for overflow, but ignore values that were generated by bit
1140 manipulation operators (eg ~0xe6 and -7). This does mean that
1141 manipluated overlarge values will not be reported (eg ~0x1234),
1142 but it does help to maintain compatibility with earlier versions
1143 of the assembler. */
1144 if (! val->X_extrabit
1145 && is_overflow (val->X_add_number, size*8))
1146 as_warn ( _("%d-bit overflow (%+ld)"), size*8, val->X_add_number);
1147 for (i = 0; i < size; ++i)
1148 p[i] = (char)(val->X_add_number >> (i*8));
1149 return;
1150 }
1151
1152 switch (size)
1153 {
1154 case 1: r_type = BFD_RELOC_8; break;
1155 case 2: r_type = BFD_RELOC_16; break;
1156 case 3: r_type = BFD_RELOC_24; break;
1157 case 4: r_type = BFD_RELOC_32; break;
1158 case 8: r_type = BFD_RELOC_64; break;
1159 default:
1160 as_fatal (_("invalid data size %d"), size);
1161 }
1162
1163 if ( (val->X_op == O_register)
1164 || (val->X_op == O_md1)
1165 || contains_register (val->X_add_symbol)
1166 || contains_register (val->X_op_symbol))
1167 ill_op ();
1168
1169 if (size <= 2 && val->X_op_symbol)
1170 {
1171 bool simplify = true;
1172 int shift = symbol_get_value_expression (val->X_op_symbol)->X_add_number;
1173 if (val->X_op == O_bit_and && shift == (1 << (size*8))-1)
1174 shift = 0;
1175 else if (val->X_op != O_right_shift)
1176 shift = -1;
1177
1178 if (size == 1)
1179 {
1180 switch (shift)
1181 {
1182 case 0: r_type = BFD_RELOC_Z80_BYTE0; break;
1183 case 8: r_type = BFD_RELOC_Z80_BYTE1; break;
1184 case 16: r_type = BFD_RELOC_Z80_BYTE2; break;
1185 case 24: r_type = BFD_RELOC_Z80_BYTE3; break;
1186 default: simplify = false;
1187 }
1188 }
1189 else /* if (size == 2) */
1190 {
1191 switch (shift)
1192 {
1193 case 0: r_type = BFD_RELOC_Z80_WORD0; break;
1194 case 16: r_type = BFD_RELOC_Z80_WORD1; break;
1195 case 8:
1196 case 24: /* add two byte fixups */
1197 val->X_op = O_symbol;
1198 val->X_op_symbol = NULL;
1199 val->X_add_number = 0;
1200 if (shift == 8)
1201 {
1202 fix_new_exp (frag_now, p++ - frag_now->fr_literal, 1, val, false,
1203 BFD_RELOC_Z80_BYTE1);
1204 /* prepare to next byte */
1205 r_type = BFD_RELOC_Z80_BYTE2;
1206 }
1207 else
1208 r_type = BFD_RELOC_Z80_BYTE3; /* high byte will be 0 */
1209 size = 1;
1210 simplify = false;
1211 break;
1212 default: simplify = false;
1213 }
1214 }
1215
1216 if (simplify)
1217 {
1218 val->X_op = O_symbol;
1219 val->X_op_symbol = NULL;
1220 val->X_add_number = 0;
1221 }
1222 }
1223
1224 fix_new_exp (frag_now, p - frag_now->fr_literal, size, val, false, r_type);
1225 }
1226
1227 static void
1228 emit_byte (expressionS * val, bfd_reloc_code_real_type r_type)
1229 {
1230 char *p;
1231
1232 if (r_type == BFD_RELOC_8)
1233 {
1234 emit_data_val (val, 1);
1235 return;
1236 }
1237 p = frag_more (1);
1238 *p = val->X_add_number;
1239 if (contains_register (val->X_add_symbol) || contains_register (val->X_op_symbol))
1240 {
1241 ill_op ();
1242 }
1243 else if ((r_type == BFD_RELOC_8_PCREL) && (val->X_op == O_constant))
1244 {
1245 as_bad (_("cannot make a relative jump to an absolute location"));
1246 }
1247 else if (val->X_op == O_constant)
1248 {
1249 if ((val->X_add_number < -128) || (val->X_add_number >= 128))
1250 {
1251 if (r_type == BFD_RELOC_Z80_DISP8)
1252 as_bad (_("index overflow (%+ld)"), val->X_add_number);
1253 else
1254 as_bad (_("offset overflow (%+ld)"), val->X_add_number);
1255 }
1256 }
1257 else
1258 {
1259 /* For symbols only, constants are stored at begin of function. */
1260 fix_new_exp (frag_now, p - frag_now->fr_literal, 1, val,
1261 r_type == BFD_RELOC_8_PCREL, r_type);
1262 }
1263 }
1264
1265 static void
1266 emit_word (expressionS * val)
1267 {
1268 emit_data_val (val, (inst_mode & INST_MODE_IL) ? 3 : 2);
1269 }
1270
1271 static void
1272 emit_mx (char prefix, char opcode, int shift, expressionS * arg)
1273 /* The operand m may be r, (hl), (ix+d), (iy+d),
1274 if 0 == prefix m may also be ixl, ixh, iyl, iyh. */
1275 {
1276 char *q;
1277 int rnum;
1278
1279 rnum = arg->X_add_number;
1280 switch (arg->X_op)
1281 {
1282 case O_register:
1283 if (arg->X_md)
1284 {
1285 if (rnum != REG_HL)
1286 {
1287 ill_op ();
1288 break;
1289 }
1290 else
1291 rnum = 6;
1292 }
1293 else
1294 {
1295 if ((prefix == 0) && (rnum & R_INDEX))
1296 {
1297 prefix = (rnum & R_IX) ? 0xDD : 0xFD;
1298 if (!(ins_ok & (INS_EZ80|INS_R800|INS_Z80N)))
1299 check_mach (INS_IDX_HALF);
1300 rnum &= ~R_INDEX;
1301 }
1302 if (rnum > 7)
1303 {
1304 ill_op ();
1305 break;
1306 }
1307 }
1308 q = frag_more (prefix ? 2 : 1);
1309 if (prefix)
1310 * q ++ = prefix;
1311 * q ++ = opcode + (rnum << shift);
1312 break;
1313 case O_md1:
1314 if (ins_ok & INS_GBZ80)
1315 {
1316 ill_op ();
1317 break;
1318 }
1319 q = frag_more (2);
1320 *q++ = (rnum & R_IX) ? 0xDD : 0xFD;
1321 *q = (prefix) ? prefix : (opcode + (6 << shift));
1322 {
1323 expressionS offset = *arg;
1324 offset.X_op = O_symbol;
1325 offset.X_add_number = 0;
1326 emit_byte (&offset, BFD_RELOC_Z80_DISP8);
1327 }
1328 if (prefix)
1329 {
1330 q = frag_more (1);
1331 *q = opcode+(6<<shift);
1332 }
1333 break;
1334 default:
1335 abort ();
1336 }
1337 }
1338
1339 /* The operand m may be r, (hl), (ix+d), (iy+d),
1340 if 0 = prefix m may also be ixl, ixh, iyl, iyh. */
1341 static const char *
1342 emit_m (char prefix, char opcode, const char *args)
1343 {
1344 expressionS arg_m;
1345 const char *p;
1346
1347 p = parse_exp (args, &arg_m);
1348 switch (arg_m.X_op)
1349 {
1350 case O_md1:
1351 case O_register:
1352 emit_mx (prefix, opcode, 0, &arg_m);
1353 break;
1354 default:
1355 ill_op ();
1356 }
1357 return p;
1358 }
1359
1360 /* The operand m may be as above or one of the undocumented
1361 combinations (ix+d),r and (iy+d),r (if unportable instructions
1362 are allowed). */
1363
1364 static const char *
1365 emit_mr (char prefix, char opcode, const char *args)
1366 {
1367 expressionS arg_m, arg_r;
1368 const char *p;
1369
1370 p = parse_exp (args, & arg_m);
1371
1372 switch (arg_m.X_op)
1373 {
1374 case O_md1:
1375 if (*p == ',')
1376 {
1377 p = parse_exp (p + 1, & arg_r);
1378
1379 if ((arg_r.X_md == 0)
1380 && (arg_r.X_op == O_register)
1381 && (arg_r.X_add_number < 8))
1382 opcode += arg_r.X_add_number - 6; /* Emit_mx () will add 6. */
1383 else
1384 {
1385 ill_op ();
1386 break;
1387 }
1388 if (!(ins_ok & INS_Z80N))
1389 check_mach (INS_ROT_II_LD);
1390 }
1391 /* Fall through. */
1392 case O_register:
1393 emit_mx (prefix, opcode, 0, & arg_m);
1394 break;
1395 default:
1396 ill_op ();
1397 }
1398 return p;
1399 }
1400
1401 static void
1402 emit_sx (char prefix, char opcode, expressionS * arg_p)
1403 {
1404 char *q;
1405
1406 switch (arg_p->X_op)
1407 {
1408 case O_register:
1409 case O_md1:
1410 emit_mx (prefix, opcode, 0, arg_p);
1411 break;
1412 default:
1413 if (arg_p->X_md)
1414 ill_op ();
1415 else
1416 {
1417 q = frag_more (prefix ? 2 : 1);
1418 if (prefix)
1419 *q++ = prefix;
1420 *q = opcode ^ 0x46;
1421 emit_byte (arg_p, BFD_RELOC_8);
1422 }
1423 }
1424 }
1425
1426 /* The operand s may be r, (hl), (ix+d), (iy+d), n. */
1427 static const char *
1428 emit_s (char prefix, char opcode, const char *args)
1429 {
1430 expressionS arg_s;
1431 const char *p;
1432
1433 p = parse_exp (args, & arg_s);
1434 if (*p == ',' && arg_s.X_md == 0 && arg_s.X_op == O_register && arg_s.X_add_number == REG_A)
1435 { /* possible instruction in generic format op A,x */
1436 if (!(ins_ok & INS_EZ80) && !sdcc_compat)
1437 ill_op ();
1438 ++p;
1439 p = parse_exp (p, & arg_s);
1440 }
1441 emit_sx (prefix, opcode, & arg_s);
1442 return p;
1443 }
1444
1445 static const char *
1446 emit_sub (char prefix, char opcode, const char *args)
1447 {
1448 expressionS arg_s;
1449 const char *p;
1450
1451 if (!(ins_ok & INS_GBZ80))
1452 return emit_s (prefix, opcode, args);
1453 p = parse_exp (args, & arg_s);
1454 if (*p++ != ',')
1455 {
1456 error (_("bad instruction syntax"));
1457 return p;
1458 }
1459
1460 if (arg_s.X_md != 0 || arg_s.X_op != O_register || arg_s.X_add_number != REG_A)
1461 ill_op ();
1462
1463 p = parse_exp (p, & arg_s);
1464
1465 emit_sx (prefix, opcode, & arg_s);
1466 return p;
1467 }
1468
1469 static const char *
1470 emit_swap (char prefix, char opcode, const char *args)
1471 {
1472 expressionS reg;
1473 const char *p;
1474 char *q;
1475
1476 if (!(ins_ok & INS_Z80N))
1477 return emit_mr (prefix, opcode, args);
1478
1479 /* check for alias swap a for swapnib of Z80N */
1480 p = parse_exp (args, &reg);
1481 if (reg.X_md != 0 || reg.X_op != O_register || reg.X_add_number != REG_A)
1482 ill_op ();
1483
1484 q = frag_more (2);
1485 *q++ = 0xED;
1486 *q = 0x23;
1487 return p;
1488 }
1489
1490 static const char *
1491 emit_call (char prefix ATTRIBUTE_UNUSED, char opcode, const char * args)
1492 {
1493 expressionS addr;
1494 const char *p; char *q;
1495
1496 p = parse_exp_not_indexed (args, &addr);
1497 if (addr.X_md)
1498 ill_op ();
1499 else
1500 {
1501 q = frag_more (1);
1502 *q = opcode;
1503 emit_word (& addr);
1504 }
1505 return p;
1506 }
1507
1508 /* Operand may be rr, r, (hl), (ix+d), (iy+d). */
1509 static const char *
1510 emit_incdec (char prefix, char opcode, const char * args)
1511 {
1512 expressionS operand;
1513 int rnum;
1514 const char *p; char *q;
1515
1516 p = parse_exp (args, &operand);
1517 rnum = operand.X_add_number;
1518 if ((! operand.X_md)
1519 && (operand.X_op == O_register)
1520 && (R_ARITH&rnum))
1521 {
1522 q = frag_more ((rnum & R_INDEX) ? 2 : 1);
1523 if (rnum & R_INDEX)
1524 *q++ = (rnum & R_IX) ? 0xDD : 0xFD;
1525 *q = prefix + ((rnum & 3) << 4);
1526 }
1527 else
1528 {
1529 if ((operand.X_op == O_md1) || (operand.X_op == O_register))
1530 emit_mx (0, opcode, 3, & operand);
1531 else
1532 ill_op ();
1533 }
1534 return p;
1535 }
1536
1537 static const char *
1538 emit_jr (char prefix ATTRIBUTE_UNUSED, char opcode, const char * args)
1539 {
1540 expressionS addr;
1541 const char *p;
1542 char *q;
1543
1544 p = parse_exp_not_indexed (args, &addr);
1545 if (addr.X_md)
1546 ill_op ();
1547 else
1548 {
1549 q = frag_more (1);
1550 *q = opcode;
1551 addr.X_add_number--; /* pcrel computes after offset code */
1552 emit_byte (&addr, BFD_RELOC_8_PCREL);
1553 }
1554 return p;
1555 }
1556
1557 static const char *
1558 emit_jp (char prefix, char opcode, const char * args)
1559 {
1560 expressionS addr;
1561 const char *p;
1562 char *q;
1563 int rnum;
1564
1565 p = parse_exp_not_indexed (args, & addr);
1566 if (addr.X_md)
1567 {
1568 rnum = addr.X_add_number;
1569 if ((O_register == addr.X_op) && (REG_HL == (rnum & ~R_INDEX)))
1570 {
1571 q = frag_more ((rnum & R_INDEX) ? 2 : 1);
1572 if (rnum & R_INDEX)
1573 *q++ = (rnum & R_IX) ? 0xDD : 0xFD;
1574 *q = prefix;
1575 }
1576 else if (addr.X_op == O_register && rnum == REG_C && (ins_ok & INS_Z80N))
1577 {
1578 q = frag_more (2);
1579 *q++ = 0xED;
1580 *q = 0x98;
1581 }
1582 else
1583 ill_op ();
1584 }
1585 else
1586 {
1587 q = frag_more (1);
1588 *q = opcode;
1589 emit_word (& addr);
1590 }
1591 return p;
1592 }
1593
1594 static const char *
1595 emit_im (char prefix, char opcode, const char * args)
1596 {
1597 expressionS mode;
1598 const char *p;
1599 char *q;
1600
1601 p = parse_exp (args, & mode);
1602 if (mode.X_md || (mode.X_op != O_constant))
1603 ill_op ();
1604 else
1605 switch (mode.X_add_number)
1606 {
1607 case 1:
1608 case 2:
1609 ++mode.X_add_number;
1610 /* Fall through. */
1611 case 0:
1612 q = frag_more (2);
1613 *q++ = prefix;
1614 *q = opcode + 8*mode.X_add_number;
1615 break;
1616 default:
1617 ill_op ();
1618 }
1619 return p;
1620 }
1621
1622 static const char *
1623 emit_pop (char prefix ATTRIBUTE_UNUSED, char opcode, const char * args)
1624 {
1625 expressionS regp;
1626 const char *p;
1627 char *q;
1628
1629 p = parse_exp (args, & regp);
1630 if ((!regp.X_md)
1631 && (regp.X_op == O_register)
1632 && (regp.X_add_number & R_STACKABLE))
1633 {
1634 int rnum;
1635
1636 rnum = regp.X_add_number;
1637 if (rnum&R_INDEX)
1638 {
1639 q = frag_more (2);
1640 *q++ = (rnum&R_IX)?0xDD:0xFD;
1641 }
1642 else
1643 q = frag_more (1);
1644 *q = opcode + ((rnum & 3) << 4);
1645 }
1646 else
1647 ill_op ();
1648
1649 return p;
1650 }
1651
1652 static const char *
1653 emit_push (char prefix, char opcode, const char * args)
1654 {
1655 expressionS arg;
1656 const char *p;
1657 char *q;
1658
1659 p = parse_exp (args, & arg);
1660 if (arg.X_op == O_register)
1661 return emit_pop (prefix, opcode, args);
1662
1663 if (arg.X_md || arg.X_op == O_md1 || !(ins_ok & INS_Z80N))
1664 ill_op ();
1665
1666 q = frag_more (2);
1667 *q++ = 0xED;
1668 *q = 0x8A;
1669
1670 q = frag_more (2);
1671 fix_new_exp (frag_now, q - frag_now->fr_literal, 2, &arg, false,
1672 BFD_RELOC_Z80_16_BE);
1673
1674 return p;
1675 }
1676
1677 static const char *
1678 emit_retcc (char prefix ATTRIBUTE_UNUSED, char opcode, const char * args)
1679 {
1680 char cc, *q;
1681 const char *p;
1682
1683 p = parse_cc (args, &cc);
1684 q = frag_more (1);
1685 if (p)
1686 *q = opcode + cc;
1687 else
1688 *q = prefix;
1689 return p ? p : args;
1690 }
1691
1692 static const char *
1693 emit_adc (char prefix, char opcode, const char * args)
1694 {
1695 expressionS term;
1696 int rnum;
1697 const char *p;
1698 char *q;
1699
1700 p = parse_exp (args, &term);
1701 if (*p++ != ',')
1702 {
1703 error (_("bad instruction syntax"));
1704 return p;
1705 }
1706
1707 if ((term.X_md) || (term.X_op != O_register))
1708 ill_op ();
1709 else
1710 switch (term.X_add_number)
1711 {
1712 case REG_A:
1713 p = emit_s (0, prefix, p);
1714 break;
1715 case REG_HL:
1716 p = parse_exp (p, &term);
1717 if ((!term.X_md) && (term.X_op == O_register))
1718 {
1719 rnum = term.X_add_number;
1720 if (R_ARITH == (rnum & (R_ARITH | R_INDEX)))
1721 {
1722 q = frag_more (2);
1723 *q++ = 0xED;
1724 *q = opcode + ((rnum & 3) << 4);
1725 break;
1726 }
1727 }
1728 /* Fall through. */
1729 default:
1730 ill_op ();
1731 }
1732 return p;
1733 }
1734
1735 static const char *
1736 emit_add (char prefix, char opcode, const char * args)
1737 {
1738 expressionS term;
1739 int lhs, rhs;
1740 const char *p;
1741 char *q;
1742
1743 p = parse_exp (args, &term);
1744 if (*p++ != ',')
1745 {
1746 error (_("bad instruction syntax"));
1747 return p;
1748 }
1749
1750 if ((term.X_md) || (term.X_op != O_register))
1751 ill_op ();
1752 else
1753 switch (term.X_add_number)
1754 {
1755 case REG_A:
1756 p = emit_s (0, prefix, p);
1757 break;
1758 case REG_SP:
1759 p = parse_exp (p, &term);
1760 if (!(ins_ok & INS_GBZ80) || term.X_md || term.X_op == O_register)
1761 ill_op ();
1762 q = frag_more (1);
1763 *q = 0xE8;
1764 emit_byte (&term, BFD_RELOC_Z80_DISP8);
1765 break;
1766 case REG_BC:
1767 case REG_DE:
1768 if (!(ins_ok & INS_Z80N))
1769 {
1770 ill_op ();
1771 break;
1772 }
1773 /* Fall through. */
1774 case REG_HL:
1775 case REG_IX:
1776 case REG_IY:
1777 lhs = term.X_add_number;
1778 p = parse_exp (p, &term);
1779 rhs = term.X_add_number;
1780 if (term.X_md != 0 || term.X_op == O_md1)
1781 ill_op ();
1782 else if ((term.X_op == O_register) && (rhs & R_ARITH) && (rhs == lhs || (rhs & ~R_INDEX) != REG_HL))
1783 {
1784 if (1)
1785 {
1786 q = frag_more ((lhs & R_INDEX) ? 2 : 1);
1787 if (lhs & R_INDEX)
1788 *q++ = (lhs & R_IX) ? 0xDD : 0xFD;
1789 *q = opcode + ((rhs & 3) << 4);
1790 break;
1791 }
1792 }
1793 else if (!(lhs & R_INDEX) && (ins_ok & INS_Z80N))
1794 {
1795 if (term.X_op == O_register && rhs == REG_A)
1796 { /* ADD BC/DE/HL,A */
1797 q = frag_more (2);
1798 *q++ = 0xED;
1799 *q = 0x33 - (lhs & 3);
1800 break;
1801 }
1802 else if (term.X_op != O_register && term.X_op != O_md1)
1803 { /* ADD BC/DE/HL,nn */
1804 q = frag_more (2);
1805 *q++ = 0xED;
1806 *q = 0x36 - (lhs & 3);
1807 emit_word (&term);
1808 break;
1809 }
1810 }
1811 /* Fall through. */
1812 default:
1813 ill_op ();
1814 }
1815 return p;
1816 }
1817
1818 static const char *
1819 emit_bit (char prefix, char opcode, const char * args)
1820 {
1821 expressionS b;
1822 int bn;
1823 const char *p;
1824
1825 p = parse_exp (args, &b);
1826 if (*p++ != ',')
1827 error (_("bad instruction syntax"));
1828
1829 bn = b.X_add_number;
1830 if ((!b.X_md)
1831 && (b.X_op == O_constant)
1832 && (0 <= bn)
1833 && (bn < 8))
1834 {
1835 if (opcode == 0x40)
1836 /* Bit : no optional third operand. */
1837 p = emit_m (prefix, opcode + (bn << 3), p);
1838 else
1839 /* Set, res : resulting byte can be copied to register. */
1840 p = emit_mr (prefix, opcode + (bn << 3), p);
1841 }
1842 else
1843 ill_op ();
1844 return p;
1845 }
1846
1847 /* BSLA DE,B; BSRA DE,B; BSRL DE,B; BSRF DE,B; BRLC DE,B (Z80N only) */
1848 static const char *
1849 emit_bshft (char prefix, char opcode, const char * args)
1850 {
1851 expressionS r1, r2;
1852 const char *p;
1853 char *q;
1854
1855 p = parse_exp (args, & r1);
1856 if (*p++ != ',')
1857 error (_("bad instruction syntax"));
1858 p = parse_exp (p, & r2);
1859 if (r1.X_md || r1.X_op != O_register || r1.X_add_number != REG_DE ||
1860 r2.X_md || r2.X_op != O_register || r2.X_add_number != REG_B)
1861 ill_op ();
1862 q = frag_more (2);
1863 *q++ = prefix;
1864 *q = opcode;
1865 return p;
1866 }
1867
1868 static const char *
1869 emit_jpcc (char prefix, char opcode, const char * args)
1870 {
1871 char cc;
1872 const char *p;
1873
1874 p = parse_cc (args, & cc);
1875 if (p && *p++ == ',')
1876 p = emit_call (0, opcode + cc, p);
1877 else
1878 p = (prefix == (char)0xC3)
1879 ? emit_jp (0xE9, prefix, args)
1880 : emit_call (0, prefix, args);
1881 return p;
1882 }
1883
1884 static const char *
1885 emit_jrcc (char prefix, char opcode, const char * args)
1886 {
1887 char cc;
1888 const char *p;
1889
1890 p = parse_cc (args, &cc);
1891 if (p && *p++ == ',')
1892 {
1893 if (cc > (3 << 3))
1894 error (_("condition code invalid for jr"));
1895 else
1896 p = emit_jr (0, opcode + cc, p);
1897 }
1898 else
1899 p = emit_jr (0, prefix, args);
1900
1901 return p;
1902 }
1903
1904 static const char *
1905 emit_ex (char prefix_in ATTRIBUTE_UNUSED,
1906 char opcode_in ATTRIBUTE_UNUSED, const char * args)
1907 {
1908 expressionS op;
1909 const char * p;
1910 char prefix, opcode;
1911
1912 p = parse_exp_not_indexed (args, &op);
1913 p = skip_space (p);
1914 if (*p++ != ',')
1915 {
1916 error (_("bad instruction syntax"));
1917 return p;
1918 }
1919
1920 prefix = opcode = 0;
1921 if (op.X_op == O_register)
1922 switch (op.X_add_number | (op.X_md ? 0x8000 : 0))
1923 {
1924 case REG_AF:
1925 if (TOLOWER (*p++) == 'a' && TOLOWER (*p++) == 'f')
1926 {
1927 /* The scrubber changes '\'' to '`' in this context. */
1928 if (*p == '`')
1929 ++p;
1930 opcode = 0x08;
1931 }
1932 break;
1933 case REG_DE:
1934 if (TOLOWER (*p++) == 'h' && TOLOWER (*p++) == 'l')
1935 opcode = 0xEB;
1936 break;
1937 case REG_SP|0x8000:
1938 p = parse_exp (p, & op);
1939 if (op.X_op == O_register
1940 && op.X_md == 0
1941 && (op.X_add_number & ~R_INDEX) == REG_HL)
1942 {
1943 opcode = 0xE3;
1944 if (R_INDEX & op.X_add_number)
1945 prefix = (R_IX & op.X_add_number) ? 0xDD : 0xFD;
1946 }
1947 break;
1948 }
1949 if (opcode)
1950 emit_insn (prefix, opcode, p);
1951 else
1952 ill_op ();
1953
1954 return p;
1955 }
1956
1957 static const char *
1958 emit_in (char prefix ATTRIBUTE_UNUSED, char opcode ATTRIBUTE_UNUSED,
1959 const char * args)
1960 {
1961 expressionS reg, port;
1962 const char *p;
1963 char *q;
1964
1965 p = parse_exp (args, &reg);
1966 if (reg.X_md && reg.X_op == O_register && reg.X_add_number == REG_C)
1967 { /* permit instruction in (c) as alias for in f,(c) */
1968 port = reg;
1969 reg.X_md = 0;
1970 reg.X_add_number = REG_F;
1971 }
1972 else
1973 {
1974 if (*p++ != ',')
1975 {
1976 error (_("bad instruction syntax"));
1977 return p;
1978 }
1979 p = parse_exp (p, &port);
1980 }
1981 if (reg.X_md == 0
1982 && reg.X_op == O_register
1983 && (reg.X_add_number <= 7 || reg.X_add_number == REG_F)
1984 && (port.X_md))
1985 {
1986 if (port.X_op != O_md1 && port.X_op != O_register)
1987 {
1988 if (REG_A == reg.X_add_number)
1989 {
1990 q = frag_more (1);
1991 *q = 0xDB;
1992 emit_byte (&port, BFD_RELOC_8);
1993 }
1994 else
1995 ill_op ();
1996 }
1997 else
1998 {
1999 if (port.X_add_number == REG_C || port.X_add_number == REG_BC)
2000 {
2001 if (port.X_add_number == REG_BC && !(ins_ok & INS_EZ80))
2002 ill_op ();
2003 else if (reg.X_add_number == REG_F && !(ins_ok & (INS_R800|INS_Z80N)))
2004 check_mach (INS_IN_F_C);
2005 q = frag_more (2);
2006 *q++ = 0xED;
2007 *q = 0x40|((reg.X_add_number&7)<<3);
2008 }
2009 else
2010 ill_op ();
2011 }
2012 }
2013 else
2014 ill_op ();
2015 return p;
2016 }
2017
2018 static const char *
2019 emit_in0 (char prefix ATTRIBUTE_UNUSED, char opcode ATTRIBUTE_UNUSED,
2020 const char * args)
2021 {
2022 expressionS reg, port;
2023 const char *p;
2024 char *q;
2025
2026 p = parse_exp (args, &reg);
2027 if (*p++ != ',')
2028 {
2029 error (_("bad instruction syntax"));
2030 return p;
2031 }
2032
2033 p = parse_exp (p, &port);
2034 if (reg.X_md == 0
2035 && reg.X_op == O_register
2036 && reg.X_add_number <= 7
2037 && port.X_md
2038 && port.X_op != O_md1
2039 && port.X_op != O_register)
2040 {
2041 q = frag_more (2);
2042 *q++ = 0xED;
2043 *q = 0x00|(reg.X_add_number << 3);
2044 emit_byte (&port, BFD_RELOC_8);
2045 }
2046 else
2047 ill_op ();
2048 return p;
2049 }
2050
2051 static const char *
2052 emit_out (char prefix ATTRIBUTE_UNUSED, char opcode ATTRIBUTE_UNUSED,
2053 const char * args)
2054 {
2055 expressionS reg, port;
2056 const char *p;
2057 char *q;
2058
2059 p = parse_exp (args, & port);
2060 if (*p++ != ',')
2061 {
2062 error (_("bad instruction syntax"));
2063 return p;
2064 }
2065 p = parse_exp (p, &reg);
2066 if (!port.X_md)
2067 { ill_op (); return p; }
2068 /* Allow "out (c), 0" as unportable instruction. */
2069 if (reg.X_op == O_constant && reg.X_add_number == 0)
2070 {
2071 if (!(ins_ok & INS_Z80N))
2072 check_mach (INS_OUT_C_0);
2073 reg.X_op = O_register;
2074 reg.X_add_number = 6;
2075 }
2076 if (reg.X_md
2077 || reg.X_op != O_register
2078 || reg.X_add_number > 7)
2079 ill_op ();
2080 else
2081 if (port.X_op != O_register && port.X_op != O_md1)
2082 {
2083 if (REG_A == reg.X_add_number)
2084 {
2085 q = frag_more (1);
2086 *q = 0xD3;
2087 emit_byte (&port, BFD_RELOC_8);
2088 }
2089 else
2090 ill_op ();
2091 }
2092 else
2093 {
2094 if (REG_C == port.X_add_number || port.X_add_number == REG_BC)
2095 {
2096 if (port.X_add_number == REG_BC && !(ins_ok & INS_EZ80))
2097 ill_op ();
2098 q = frag_more (2);
2099 *q++ = 0xED;
2100 *q = 0x41 | (reg.X_add_number << 3);
2101 }
2102 else
2103 ill_op ();
2104 }
2105 return p;
2106 }
2107
2108 static const char *
2109 emit_out0 (char prefix ATTRIBUTE_UNUSED, char opcode ATTRIBUTE_UNUSED,
2110 const char * args)
2111 {
2112 expressionS reg, port;
2113 const char *p;
2114 char *q;
2115
2116 p = parse_exp (args, & port);
2117 if (*p++ != ',')
2118 {
2119 error (_("bad instruction syntax"));
2120 return p;
2121 }
2122 p = parse_exp (p, &reg);
2123 if (port.X_md != 0
2124 && port.X_op != O_register
2125 && port.X_op != O_md1
2126 && reg.X_md == 0
2127 && reg.X_op == O_register
2128 && reg.X_add_number <= 7)
2129 {
2130 q = frag_more (2);
2131 *q++ = 0xED;
2132 *q = 0x01 | (reg.X_add_number << 3);
2133 emit_byte (&port, BFD_RELOC_8);
2134 }
2135 else
2136 ill_op ();
2137 return p;
2138 }
2139
2140 static const char *
2141 emit_rst (char prefix ATTRIBUTE_UNUSED, char opcode, const char * args)
2142 {
2143 expressionS addr;
2144 const char *p;
2145 char *q;
2146
2147 p = parse_exp_not_indexed (args, &addr);
2148 if (addr.X_op != O_constant)
2149 {
2150 error ("rst needs constant address");
2151 return p;
2152 }
2153
2154 if (addr.X_add_number & ~(7 << 3))
2155 ill_op ();
2156 else
2157 {
2158 q = frag_more (1);
2159 *q = opcode + (addr.X_add_number & (7 << 3));
2160 }
2161 return p;
2162 }
2163
2164 /* For 8-bit indirect load to memory instructions like: LD (HL),n or LD (ii+d),n. */
2165 static void
2166 emit_ld_m_n (expressionS *dst, expressionS *src)
2167 {
2168 char *q;
2169 char prefix;
2170 expressionS dst_offset;
2171
2172 switch (dst->X_add_number)
2173 {
2174 case REG_HL: prefix = 0x00; break;
2175 case REG_IX: prefix = 0xDD; break;
2176 case REG_IY: prefix = 0xFD; break;
2177 default:
2178 ill_op ();
2179 return;
2180 }
2181
2182 q = frag_more (prefix ? 2 : 1);
2183 if (prefix)
2184 *q++ = prefix;
2185 *q = 0x36;
2186 if (prefix)
2187 {
2188 dst_offset = *dst;
2189 dst_offset.X_op = O_symbol;
2190 dst_offset.X_add_number = 0;
2191 emit_byte (& dst_offset, BFD_RELOC_Z80_DISP8);
2192 }
2193 emit_byte (src, BFD_RELOC_8);
2194 }
2195
2196 /* For 8-bit load register to memory instructions: LD (<expression>),r. */
2197 static void
2198 emit_ld_m_r (expressionS *dst, expressionS *src)
2199 {
2200 char *q;
2201 char prefix = 0;
2202 expressionS dst_offset;
2203
2204 switch (dst->X_op)
2205 {
2206 case O_md1:
2207 if (ins_ok & INS_GBZ80)
2208 { /* LD (HL+),A or LD (HL-),A */
2209 if (src->X_op != O_register || src->X_add_number != REG_A)
2210 break;
2211 *frag_more (1) = (dst->X_add_number == REG_HL) ? 0x22 : 0x32;
2212 return;
2213 }
2214 else
2215 prefix = (dst->X_add_number == REG_IX) ? 0xDD : 0xFD;
2216 /* Fall through. */
2217 case O_register:
2218 switch (dst->X_add_number)
2219 {
2220 case REG_BC: /* LD (BC),A */
2221 case REG_DE: /* LD (DE),A */
2222 if (src->X_add_number == REG_A)
2223 {
2224 q = frag_more (1);
2225 *q = 0x02 | ((dst->X_add_number & 3) << 4);
2226 return;
2227 }
2228 break;
2229 case REG_IX:
2230 case REG_IY:
2231 case REG_HL: /* LD (HL),r or LD (ii+d),r */
2232 if (src->X_add_number <= 7)
2233 {
2234 q = frag_more (prefix ? 2 : 1);
2235 if (prefix)
2236 *q++ = prefix;
2237 *q = 0x70 | src->X_add_number;
2238 if (prefix)
2239 {
2240 dst_offset = *dst;
2241 dst_offset.X_op = O_symbol;
2242 dst_offset.X_add_number = 0;
2243 emit_byte (& dst_offset, BFD_RELOC_Z80_DISP8);
2244 }
2245 return;
2246 }
2247 break;
2248 default:;
2249 }
2250 break;
2251 default: /* LD (nn),A */
2252 if (src->X_add_number == REG_A)
2253 {
2254 q = frag_more (1);
2255 *q = (ins_ok & INS_GBZ80) ? 0xEA : 0x32;
2256 emit_word (dst);
2257 return;
2258 }
2259 break;
2260 }
2261 ill_op ();
2262 }
2263
2264 /* For 16-bit load register to memory instructions: LD (<expression>),rr. */
2265 static void
2266 emit_ld_m_rr (expressionS *dst, expressionS *src)
2267 {
2268 char *q;
2269 int prefix = 0;
2270 int opcode = 0;
2271 expressionS dst_offset;
2272
2273 switch (dst->X_op)
2274 {
2275 case O_md1: /* eZ80 instructions LD (ii+d),rr */
2276 case O_register: /* eZ80 instructions LD (HL),rr */
2277 if (!(ins_ok & INS_EZ80)) /* 16-bit indirect load group is supported by eZ80 only */
2278 ill_op ();
2279 switch (dst->X_add_number)
2280 {
2281 case REG_IX: prefix = 0xDD; break;
2282 case REG_IY: prefix = 0xFD; break;
2283 case REG_HL: prefix = 0xED; break;
2284 default:
2285 ill_op ();
2286 }
2287 switch (src->X_add_number)
2288 {
2289 case REG_BC: opcode = 0x0F; break;
2290 case REG_DE: opcode = 0x1F; break;
2291 case REG_HL: opcode = 0x2F; break;
2292 case REG_IX: opcode = (prefix != 0xFD) ? 0x3F : 0x3E; break;
2293 case REG_IY: opcode = (prefix != 0xFD) ? 0x3E : 0x3F; break;
2294 default:
2295 ill_op ();
2296 }
2297 q = frag_more (prefix ? 2 : 1);
2298 *q++ = prefix;
2299 *q = opcode;
2300 if (prefix == 0xFD || prefix == 0xDD)
2301 {
2302 dst_offset = *dst;
2303 dst_offset.X_op = O_symbol;
2304 dst_offset.X_add_number = 0;
2305 emit_byte (& dst_offset, BFD_RELOC_Z80_DISP8);
2306 }
2307 break;
2308 default: /* LD (nn),rr */
2309 if (ins_ok & INS_GBZ80)
2310 {
2311 /* GBZ80 supports only LD (nn),SP */
2312 if (src->X_add_number == REG_SP)
2313 {
2314 prefix = 0x00;
2315 opcode = 0x08;
2316 }
2317 else
2318 ill_op ();
2319 }
2320 else
2321 {
2322 switch (src->X_add_number)
2323 {
2324 case REG_BC: prefix = 0xED; opcode = 0x43; break;
2325 case REG_DE: prefix = 0xED; opcode = 0x53; break;
2326 case REG_HL: prefix = 0x00; opcode = 0x22; break;
2327 case REG_IX: prefix = 0xDD; opcode = 0x22; break;
2328 case REG_IY: prefix = 0xFD; opcode = 0x22; break;
2329 case REG_SP: prefix = 0xED; opcode = 0x73; break;
2330 default:
2331 ill_op ();
2332 }
2333 }
2334 q = frag_more (prefix ? 2 : 1);
2335 if (prefix)
2336 *q++ = prefix;
2337 *q = opcode;
2338 emit_word (dst);
2339 }
2340 }
2341
2342 static void
2343 emit_ld_r_m (expressionS *dst, expressionS *src)
2344 { /* for 8-bit memory load to register: LD r,(xxx) */
2345 char *q;
2346 char prefix = 0;
2347 char opcode = 0;
2348 expressionS src_offset;
2349
2350 if (dst->X_add_number == REG_A && src->X_op == O_register)
2351 { /* LD A,(BC) or LD A,(DE) */
2352 switch (src->X_add_number)
2353 {
2354 case REG_BC: opcode = 0x0A; break;
2355 case REG_DE: opcode = 0x1A; break;
2356 default: break;
2357 }
2358 if (opcode != 0)
2359 {
2360 q = frag_more (1);
2361 *q = opcode;
2362 return;
2363 }
2364 }
2365
2366 switch (src->X_op)
2367 {
2368 case O_md1:
2369 if (ins_ok & INS_GBZ80)
2370 { /* LD A,(HL+) or LD A,(HL-) */
2371 if (dst->X_op == O_register && dst->X_add_number == REG_A)
2372 *frag_more (1) = (src->X_add_number == REG_HL) ? 0x2A : 0x3A;
2373 else
2374 ill_op ();
2375 break;
2376 }
2377 /* Fall through. */
2378 case O_register:
2379 if (dst->X_add_number > 7)
2380 ill_op ();
2381 opcode = 0x46; /* LD B,(HL) */
2382 switch (src->X_add_number)
2383 {
2384 case REG_HL: prefix = 0x00; break;
2385 case REG_IX: prefix = 0xDD; break;
2386 case REG_IY: prefix = 0xFD; break;
2387 default:
2388 ill_op ();
2389 }
2390 q = frag_more (prefix ? 2 : 1);
2391 if (prefix)
2392 *q++ = prefix;
2393 *q = opcode | ((dst->X_add_number & 7) << 3);
2394 if (prefix)
2395 {
2396 src_offset = *src;
2397 src_offset.X_op = O_symbol;
2398 src_offset.X_add_number = 0;
2399 emit_byte (& src_offset, BFD_RELOC_Z80_DISP8);
2400 }
2401 break;
2402 default: /* LD A,(nn) */
2403 if (dst->X_add_number == REG_A)
2404 {
2405 q = frag_more (1);
2406 *q = (ins_ok & INS_GBZ80) ? 0xFA : 0x3A;
2407 emit_word (src);
2408 }
2409 else
2410 ill_op ();
2411 }
2412 }
2413
2414 static void
2415 emit_ld_r_n (expressionS *dst, expressionS *src)
2416 { /* for 8-bit immediate value load to register: LD r,n */
2417 char *q;
2418 char prefix = 0;
2419
2420 switch (dst->X_add_number)
2421 {
2422 case REG_H|R_IX:
2423 case REG_L|R_IX:
2424 prefix = 0xDD;
2425 break;
2426 case REG_H|R_IY:
2427 case REG_L|R_IY:
2428 prefix = 0xFD;
2429 break;
2430 case REG_A:
2431 case REG_B:
2432 case REG_C:
2433 case REG_D:
2434 case REG_E:
2435 case REG_H:
2436 case REG_L:
2437 break;
2438 default:
2439 ill_op ();
2440 }
2441
2442 q = frag_more (prefix ? 2 : 1);
2443 if (prefix)
2444 {
2445 if (ins_ok & INS_GBZ80)
2446 ill_op ();
2447 else if (!(ins_ok & (INS_EZ80|INS_R800|INS_Z80N)))
2448 check_mach (INS_IDX_HALF);
2449 *q++ = prefix;
2450 }
2451 *q = 0x06 | ((dst->X_add_number & 7) << 3);
2452 emit_byte (src, BFD_RELOC_8);
2453 }
2454
2455 static void
2456 emit_ld_r_r (expressionS *dst, expressionS *src)
2457 { /* mostly 8-bit load register from register instructions: LD r,r */
2458 /* there are some exceptions: LD SP,HL/IX/IY; LD I,HL and LD HL,I */
2459 char *q;
2460 int prefix = 0;
2461 int opcode = 0;
2462 int ii_halves = 0;
2463
2464 switch (dst->X_add_number)
2465 {
2466 case REG_SP:
2467 switch (src->X_add_number)
2468 {
2469 case REG_HL: prefix = 0x00; break;
2470 case REG_IX: prefix = 0xDD; break;
2471 case REG_IY: prefix = 0xFD; break;
2472 default:
2473 ill_op ();
2474 }
2475 opcode = 0xF9;
2476 break;
2477 case REG_HL:
2478 if (!(ins_ok & INS_EZ80))
2479 ill_op ();
2480 if (src->X_add_number != REG_I)
2481 ill_op ();
2482 if (cpu_mode < 1)
2483 error (_("ADL mode instruction"));
2484 /* LD HL,I */
2485 prefix = 0xED;
2486 opcode = 0xD7;
2487 break;
2488 case REG_I:
2489 if (src->X_add_number == REG_HL)
2490 {
2491 if (!(ins_ok & INS_EZ80))
2492 ill_op ();
2493 if (cpu_mode < 1)
2494 error (_("ADL mode instruction"));
2495 prefix = 0xED;
2496 opcode = 0xC7;
2497 }
2498 else if (src->X_add_number == REG_A)
2499 {
2500 prefix = 0xED;
2501 opcode = 0x47;
2502 }
2503 else
2504 ill_op ();
2505 break;
2506 case REG_MB:
2507 if (!(ins_ok & INS_EZ80) || (src->X_add_number != REG_A))
2508 ill_op ();
2509 if (cpu_mode < 1)
2510 error (_("ADL mode instruction"));
2511 prefix = 0xED;
2512 opcode = 0x6D;
2513 break;
2514 case REG_R:
2515 if (src->X_add_number == REG_A) /* LD R,A */
2516 {
2517 prefix = 0xED;
2518 opcode = 0x4F;
2519 }
2520 else
2521 ill_op ();
2522 break;
2523 case REG_A:
2524 if (src->X_add_number == REG_I) /* LD A,I */
2525 {
2526 prefix = 0xED;
2527 opcode = 0x57;
2528 break;
2529 }
2530 else if (src->X_add_number == REG_R) /* LD A,R */
2531 {
2532 prefix = 0xED;
2533 opcode = 0x5F;
2534 break;
2535 }
2536 else if (src->X_add_number == REG_MB) /* LD A,MB */
2537 {
2538 if (!(ins_ok & INS_EZ80))
2539 ill_op ();
2540 else
2541 {
2542 if (cpu_mode < 1)
2543 error (_("ADL mode instruction"));
2544 prefix = 0xED;
2545 opcode = 0x6E;
2546 }
2547 break;
2548 }
2549 /* Fall through. */
2550 case REG_B:
2551 case REG_C:
2552 case REG_D:
2553 case REG_E:
2554 case REG_H:
2555 case REG_L:
2556 prefix = 0x00;
2557 break;
2558 case REG_H|R_IX:
2559 case REG_L|R_IX:
2560 prefix = 0xDD;
2561 ii_halves = 1;
2562 break;
2563 case REG_H|R_IY:
2564 case REG_L|R_IY:
2565 prefix = 0xFD;
2566 ii_halves = 1;
2567 break;
2568 default:
2569 ill_op ();
2570 }
2571
2572 if (opcode == 0)
2573 {
2574 switch (src->X_add_number)
2575 {
2576 case REG_A:
2577 case REG_B:
2578 case REG_C:
2579 case REG_D:
2580 case REG_E:
2581 break;
2582 case REG_H:
2583 case REG_L:
2584 if (prefix != 0)
2585 ill_op (); /* LD iiH/L,H/L are not permitted */
2586 break;
2587 case REG_H|R_IX:
2588 case REG_L|R_IX:
2589 if (prefix == 0xFD || dst->X_add_number == REG_H || dst->X_add_number == REG_L)
2590 ill_op (); /* LD IYL,IXL and LD H,IXH are not permitted */
2591 prefix = 0xDD;
2592 ii_halves = 1;
2593 break;
2594 case REG_H|R_IY:
2595 case REG_L|R_IY:
2596 if (prefix == 0xDD || dst->X_add_number == REG_H || dst->X_add_number == REG_L)
2597 ill_op (); /* LD IXH,IYH and LD L,IYL are not permitted */
2598 prefix = 0xFD;
2599 ii_halves = 1;
2600 break;
2601 default:
2602 ill_op ();
2603 }
2604 opcode = 0x40 + ((dst->X_add_number & 7) << 3) + (src->X_add_number & 7);
2605 }
2606 if ((ins_ok & INS_GBZ80) && prefix != 0)
2607 ill_op ();
2608 if (ii_halves && !(ins_ok & (INS_EZ80|INS_R800|INS_Z80N)))
2609 check_mach (INS_IDX_HALF);
2610 if (prefix == 0 && (ins_ok & INS_EZ80))
2611 {
2612 switch (opcode)
2613 {
2614 case 0x40: /* SIS prefix, in Z80 it is LD B,B */
2615 case 0x49: /* LIS prefix, in Z80 it is LD C,C */
2616 case 0x52: /* SIL prefix, in Z80 it is LD D,D */
2617 case 0x5B: /* LIL prefix, in Z80 it is LD E,E */
2618 as_warn (_("unsupported instruction, assembled as NOP"));
2619 opcode = 0x00;
2620 break;
2621 default:;
2622 }
2623 }
2624 q = frag_more (prefix ? 2 : 1);
2625 if (prefix)
2626 *q++ = prefix;
2627 *q = opcode;
2628 }
2629
2630 static void
2631 emit_ld_rr_m (expressionS *dst, expressionS *src)
2632 { /* for 16-bit indirect load from memory to register: LD rr,(xxx) */
2633 char *q;
2634 int prefix = 0;
2635 int opcode = 0;
2636 expressionS src_offset;
2637
2638 /* GBZ80 has no support for 16-bit load from memory instructions */
2639 if (ins_ok & INS_GBZ80)
2640 ill_op ();
2641
2642 prefix = 0xED;
2643 switch (src->X_op)
2644 {
2645 case O_md1: /* LD rr,(ii+d) */
2646 prefix = (src->X_add_number == REG_IX) ? 0xDD : 0xFD;
2647 /* Fall through. */
2648 case O_register: /* LD rr,(HL) */
2649 /* currently only EZ80 has support for 16bit indirect memory load instructions */
2650 if (!(ins_ok & INS_EZ80))
2651 ill_op ();
2652 switch (dst->X_add_number)
2653 {
2654 case REG_BC: opcode = 0x07; break;
2655 case REG_DE: opcode = 0x17; break;
2656 case REG_HL: opcode = 0x27; break;
2657 case REG_IX: opcode = (prefix == 0xED || prefix == 0xDD) ? 0x37 : 0x31; break;
2658 case REG_IY: opcode = (prefix == 0xED || prefix == 0xDD) ? 0x31 : 0x37; break;
2659 default:
2660 ill_op ();
2661 }
2662 q = frag_more (2);
2663 *q++ = prefix;
2664 *q = opcode;
2665 if (prefix != 0xED)
2666 {
2667 src_offset = *src;
2668 src_offset.X_op = O_symbol;
2669 src_offset.X_add_number = 0;
2670 emit_byte (& src_offset, BFD_RELOC_Z80_DISP8);
2671 }
2672 break;
2673 default: /* LD rr,(nn) */
2674 switch (dst->X_add_number)
2675 {
2676 case REG_BC: prefix = 0xED; opcode = 0x4B; break;
2677 case REG_DE: prefix = 0xED; opcode = 0x5B; break;
2678 case REG_HL: prefix = 0x00; opcode = 0x2A; break;
2679 case REG_SP: prefix = 0xED; opcode = 0x7B; break;
2680 case REG_IX: prefix = 0xDD; opcode = 0x2A; break;
2681 case REG_IY: prefix = 0xFD; opcode = 0x2A; break;
2682 default:
2683 ill_op ();
2684 }
2685 q = frag_more (prefix ? 2 : 1);
2686 if (prefix)
2687 *q++ = prefix;
2688 *q = opcode;
2689 emit_word (src);
2690 }
2691 return;
2692 }
2693
2694 static void
2695 emit_ld_rr_nn (expressionS *dst, expressionS *src)
2696 { /* mostly load imediate value to multibyte register instructions: LD rr,nn */
2697 char *q;
2698 int prefix = 0x00;
2699 int opcode = 0x21; /* LD HL,nn */
2700 switch (dst->X_add_number)
2701 {
2702 case REG_IX:
2703 prefix = 0xDD;
2704 break;
2705 case REG_IY:
2706 prefix = 0xFD;
2707 break;
2708 case REG_HL:
2709 break;
2710 case REG_BC:
2711 case REG_DE:
2712 case REG_SP:
2713 opcode = 0x01 + ((dst->X_add_number & 3) << 4);
2714 break;
2715 default:
2716 ill_op ();
2717 return;
2718 }
2719 if (prefix && (ins_ok & INS_GBZ80))
2720 ill_op ();
2721 q = frag_more (prefix ? 2 : 1);
2722 if (prefix)
2723 *q++ = prefix;
2724 *q = opcode;
2725 emit_word (src);
2726 }
2727
2728 static const char *
2729 emit_ld (char prefix_in ATTRIBUTE_UNUSED, char opcode_in ATTRIBUTE_UNUSED,
2730 const char * args)
2731 {
2732 expressionS dst, src;
2733 const char *p;
2734
2735 p = parse_exp (args, & dst);
2736 if (*p++ != ',')
2737 error (_("bad instruction syntax"));
2738 p = parse_exp (p, & src);
2739
2740 if (dst.X_md)
2741 {
2742 if (src.X_op == O_register)
2743 {
2744 if (src.X_add_number <= 7)
2745 emit_ld_m_r (& dst, & src); /* LD (xxx),r */
2746 else
2747 emit_ld_m_rr (& dst, & src); /* LD (xxx),rr */
2748 }
2749 else
2750 emit_ld_m_n (& dst, & src); /* LD (hl),n or LD (ix/y+r),n */
2751 }
2752 else if (dst.X_op == O_register)
2753 {
2754 if (src.X_md)
2755 {
2756 if (dst.X_add_number <= 7)
2757 emit_ld_r_m (& dst, & src);
2758 else
2759 emit_ld_rr_m (& dst, & src);
2760 }
2761 else if (src.X_op == O_register)
2762 emit_ld_r_r (& dst, & src);
2763 else if ((dst.X_add_number & ~R_INDEX) <= 7)
2764 emit_ld_r_n (& dst, & src);
2765 else
2766 emit_ld_rr_nn (& dst, & src);
2767 }
2768 else
2769 ill_op ();
2770
2771 return p;
2772 }
2773
2774 static const char *
2775 emit_lddldi (char prefix, char opcode, const char * args)
2776 {
2777 expressionS dst, src;
2778 const char *p;
2779 char *q;
2780
2781 if (!(ins_ok & INS_GBZ80))
2782 return emit_insn (prefix, opcode, args);
2783
2784 p = parse_exp (args, & dst);
2785 if (*p++ != ',')
2786 error (_("bad instruction syntax"));
2787 p = parse_exp (p, & src);
2788
2789 if (dst.X_op != O_register || src.X_op != O_register)
2790 ill_op ();
2791
2792 /* convert opcode 0xA0 . 0x22, 0xA8 . 0x32 */
2793 opcode = (opcode & 0x08) * 2 + 0x22;
2794
2795 if (dst.X_md != 0
2796 && dst.X_add_number == REG_HL
2797 && src.X_md == 0
2798 && src.X_add_number == REG_A)
2799 opcode |= 0x00; /* LDx (HL),A */
2800 else if (dst.X_md == 0
2801 && dst.X_add_number == REG_A
2802 && src.X_md != 0
2803 && src.X_add_number == REG_HL)
2804 opcode |= 0x08; /* LDx A,(HL) */
2805 else
2806 ill_op ();
2807
2808 q = frag_more (1);
2809 *q = opcode;
2810 return p;
2811 }
2812
2813 static const char *
2814 emit_ldh (char prefix ATTRIBUTE_UNUSED, char opcode ATTRIBUTE_UNUSED,
2815 const char * args)
2816 {
2817 expressionS dst, src;
2818 const char *p;
2819 char *q;
2820
2821 p = parse_exp (args, & dst);
2822 if (*p++ != ',')
2823 {
2824 error (_("bad instruction syntax"));
2825 return p;
2826 }
2827
2828 p = parse_exp (p, & src);
2829 if (dst.X_md == 0
2830 && dst.X_op == O_register
2831 && dst.X_add_number == REG_A
2832 && src.X_md != 0
2833 && src.X_op != O_md1)
2834 {
2835 if (src.X_op != O_register)
2836 {
2837 q = frag_more (1);
2838 *q = 0xF0;
2839 emit_byte (& src, BFD_RELOC_8);
2840 }
2841 else if (src.X_add_number == REG_C)
2842 *frag_more (1) = 0xF2;
2843 else
2844 ill_op ();
2845 }
2846 else if (dst.X_md != 0
2847 && dst.X_op != O_md1
2848 && src.X_md == 0
2849 && src.X_op == O_register
2850 && src.X_add_number == REG_A)
2851 {
2852 if (dst.X_op == O_register)
2853 {
2854 if (dst.X_add_number == REG_C)
2855 {
2856 q = frag_more (1);
2857 *q = 0xE2;
2858 }
2859 else
2860 ill_op ();
2861 }
2862 else
2863 {
2864 q = frag_more (1);
2865 *q = 0xE0;
2866 emit_byte (& dst, BFD_RELOC_8);
2867 }
2868 }
2869 else
2870 ill_op ();
2871
2872 return p;
2873 }
2874
2875 static const char *
2876 emit_ldhl (char prefix ATTRIBUTE_UNUSED, char opcode, const char * args)
2877 {
2878 expressionS dst, src;
2879 const char *p;
2880 char *q;
2881 p = parse_exp (args, & dst);
2882 if (*p++ != ',')
2883 {
2884 error (_("bad instruction syntax"));
2885 return p;
2886 }
2887
2888 p = parse_exp (p, & src);
2889 if (dst.X_md || dst.X_op != O_register || dst.X_add_number != REG_SP
2890 || src.X_md || src.X_op == O_register || src.X_op == O_md1)
2891 ill_op ();
2892 q = frag_more (1);
2893 *q = opcode;
2894 emit_byte (& src, BFD_RELOC_Z80_DISP8);
2895 return p;
2896 }
2897
2898 static const char *
2899 parse_lea_pea_args (const char * args, expressionS *op)
2900 {
2901 const char *p;
2902 p = parse_exp (args, op);
2903 if (sdcc_compat && *p == ',' && op->X_op == O_register)
2904 {
2905 expressionS off;
2906 p = parse_exp (p + 1, &off);
2907 op->X_op = O_add;
2908 op->X_add_symbol = make_expr_symbol (&off);
2909 }
2910 return p;
2911 }
2912
2913 static const char *
2914 emit_lea (char prefix, char opcode, const char * args)
2915 {
2916 expressionS dst, src;
2917 const char *p;
2918 char *q;
2919 int rnum;
2920
2921 p = parse_exp (args, & dst);
2922 if (dst.X_md != 0 || dst.X_op != O_register)
2923 ill_op ();
2924
2925 rnum = dst.X_add_number;
2926 switch (rnum)
2927 {
2928 case REG_BC:
2929 case REG_DE:
2930 case REG_HL:
2931 opcode = 0x02 | ((rnum & 0x03) << 4);
2932 break;
2933 case REG_IX:
2934 opcode = 0x32; /* lea ix,ix+d has opcode 0x32; lea ix,iy+d has opcode 0x54 */
2935 break;
2936 case REG_IY:
2937 opcode = 0x33; /* lea iy,iy+d has opcode 0x33; lea iy,ix+d has opcode 0x55 */
2938 break;
2939 default:
2940 ill_op ();
2941 }
2942
2943 if (*p++ != ',')
2944 error (_("bad instruction syntax"));
2945
2946 p = parse_lea_pea_args (p, & src);
2947 if (src.X_md != 0 || src.X_op != O_add /*&& src.X_op != O_register*/)
2948 ill_op ();
2949
2950 rnum = src.X_add_number;
2951 switch (src.X_op)
2952 {
2953 case O_add:
2954 break;
2955 case O_register: /* permit instructions like LEA rr,IX without displacement specified */
2956 src.X_add_symbol = zero;
2957 break;
2958 default:
2959 ill_op ();
2960 }
2961
2962 switch (rnum)
2963 {
2964 case REG_IX:
2965 opcode = (opcode == (char)0x33) ? 0x55 : (opcode|0x00);
2966 break;
2967 case REG_IY:
2968 opcode = (opcode == (char)0x32) ? 0x54 : (opcode|0x01);
2969 }
2970
2971 q = frag_more (2);
2972 *q++ = prefix;
2973 *q = opcode;
2974
2975 src.X_op = O_symbol;
2976 src.X_add_number = 0;
2977 emit_byte (& src, BFD_RELOC_Z80_DISP8);
2978
2979 return p;
2980 }
2981
2982 static const char *
2983 emit_mlt (char prefix, char opcode, const char * args)
2984 {
2985 expressionS arg;
2986 const char *p;
2987 char *q;
2988
2989 p = parse_exp (args, & arg);
2990 if (arg.X_md != 0 || arg.X_op != O_register || !(arg.X_add_number & R_ARITH))
2991 ill_op ();
2992
2993 q = frag_more (2);
2994 if (ins_ok & INS_Z80N)
2995 {
2996 if (arg.X_add_number != REG_DE)
2997 ill_op ();
2998 *q++ = 0xED;
2999 *q = 0x30;
3000 }
3001 else
3002 {
3003 *q++ = prefix;
3004 *q = opcode | ((arg.X_add_number & 3) << 4);
3005 }
3006
3007 return p;
3008 }
3009
3010 /* MUL D,E (Z80N only) */
3011 static const char *
3012 emit_mul (char prefix, char opcode, const char * args)
3013 {
3014 expressionS r1, r2;
3015 const char *p;
3016 char *q;
3017
3018 p = parse_exp (args, & r1);
3019 if (*p++ != ',')
3020 error (_("bad instruction syntax"));
3021 p = parse_exp (p, & r2);
3022
3023 if (r1.X_md != 0 || r1.X_op != O_register || r1.X_add_number != REG_D ||
3024 r2.X_md != 0 || r2.X_op != O_register || r2.X_add_number != REG_E)
3025 ill_op ();
3026
3027 q = frag_more (2);
3028 *q++ = prefix;
3029 *q = opcode;
3030
3031 return p;
3032 }
3033
3034 static const char *
3035 emit_nextreg (char prefix, char opcode ATTRIBUTE_UNUSED, const char * args)
3036 {
3037 expressionS rr, nn;
3038 const char *p;
3039 char *q;
3040
3041 p = parse_exp (args, & rr);
3042 if (*p++ != ',')
3043 error (_("bad instruction syntax"));
3044 p = parse_exp (p, & nn);
3045 if (rr.X_md != 0 || rr.X_op == O_register || rr.X_op == O_md1 ||
3046 nn.X_md != 0 || nn.X_op == O_md1)
3047 ill_op ();
3048 q = frag_more (2);
3049 *q++ = prefix;
3050 emit_byte (&rr, BFD_RELOC_8);
3051 if (nn.X_op == O_register && nn.X_add_number == REG_A)
3052 *q = 0x92;
3053 else if (nn.X_op != O_register)
3054 {
3055 *q = 0x91;
3056 emit_byte (&nn, BFD_RELOC_8);
3057 }
3058 else
3059 ill_op ();
3060 return p;
3061 }
3062
3063 static const char *
3064 emit_pea (char prefix, char opcode, const char * args)
3065 {
3066 expressionS arg;
3067 const char *p;
3068 char *q;
3069
3070 p = parse_lea_pea_args (args, & arg);
3071 if (arg.X_md != 0
3072 || (/*arg.X_op != O_register &&*/ arg.X_op != O_add)
3073 || !(arg.X_add_number & R_INDEX))
3074 ill_op ();
3075 /* PEA ii without displacement is mostly typo,
3076 because there is PUSH instruction which is shorter and faster */
3077 /*if (arg.X_op == O_register)
3078 as_warn (_("PEA is used without displacement, use PUSH instead"));*/
3079
3080 q = frag_more (2);
3081 *q++ = prefix;
3082 *q = opcode + (arg.X_add_number == REG_IY ? 1 : 0);
3083
3084 arg.X_op = O_symbol;
3085 arg.X_add_number = 0;
3086 emit_byte (& arg, BFD_RELOC_Z80_DISP8);
3087
3088 return p;
3089 }
3090
3091 static const char *
3092 emit_reti (char prefix, char opcode, const char * args)
3093 {
3094 if (ins_ok & INS_GBZ80)
3095 return emit_insn (0x00, 0xD9, args);
3096
3097 return emit_insn (prefix, opcode, args);
3098 }
3099
3100 static const char *
3101 emit_tst (char prefix, char opcode, const char *args)
3102 {
3103 expressionS arg_s;
3104 const char *p;
3105 char *q;
3106 int rnum;
3107
3108 p = parse_exp (args, & arg_s);
3109 if (*p == ',' && arg_s.X_md == 0 && arg_s.X_op == O_register && arg_s.X_add_number == REG_A)
3110 {
3111 if (!(ins_ok & INS_EZ80))
3112 ill_op ();
3113 ++p;
3114 p = parse_exp (p, & arg_s);
3115 }
3116
3117 rnum = arg_s.X_add_number;
3118 switch (arg_s.X_op)
3119 {
3120 case O_md1:
3121 ill_op ();
3122 break;
3123 case O_register:
3124 rnum = arg_s.X_add_number;
3125 if (arg_s.X_md != 0)
3126 {
3127 if (rnum != REG_HL)
3128 ill_op ();
3129 else
3130 rnum = 6;
3131 }
3132 q = frag_more (2);
3133 *q++ = prefix;
3134 *q = opcode | (rnum << 3);
3135 break;
3136 default:
3137 if (arg_s.X_md)
3138 ill_op ();
3139 q = frag_more (2);
3140 if (ins_ok & INS_Z80N)
3141 {
3142 *q++ = 0xED;
3143 *q = 0x27;
3144 }
3145 else
3146 {
3147 *q++ = prefix;
3148 *q = opcode | 0x60;
3149 }
3150 emit_byte (& arg_s, BFD_RELOC_8);
3151 }
3152 return p;
3153 }
3154
3155 static const char *
3156 emit_insn_n (char prefix, char opcode, const char *args)
3157 {
3158 expressionS arg;
3159 const char *p;
3160 char *q;
3161
3162 p = parse_exp (args, & arg);
3163 if (arg.X_md || arg.X_op == O_register || arg.X_op == O_md1)
3164 ill_op ();
3165
3166 q = frag_more (2);
3167 *q++ = prefix;
3168 *q = opcode;
3169 emit_byte (& arg, BFD_RELOC_8);
3170
3171 return p;
3172 }
3173
3174 static void
3175 emit_data (int size ATTRIBUTE_UNUSED)
3176 {
3177 const char *p, *q;
3178 char *u, quote;
3179 int cnt;
3180 expressionS exp;
3181
3182 if (is_it_end_of_statement ())
3183 {
3184 demand_empty_rest_of_line ();
3185 return;
3186 }
3187 p = skip_space (input_line_pointer);
3188
3189 do
3190 {
3191 if (*p == '\"' || *p == '\'')
3192 {
3193 for (quote = *p, q = ++p, cnt = 0; *p && quote != *p; ++p, ++cnt)
3194 ;
3195 u = frag_more (cnt);
3196 memcpy (u, q, cnt);
3197 if (!*p)
3198 as_warn (_("unterminated string"));
3199 else
3200 p = skip_space (p+1);
3201 }
3202 else
3203 {
3204 p = parse_exp (p, &exp);
3205 if (exp.X_op == O_md1 || exp.X_op == O_register)
3206 {
3207 ill_op ();
3208 break;
3209 }
3210 if (exp.X_md)
3211 as_warn (_("parentheses ignored"));
3212 emit_byte (&exp, BFD_RELOC_8);
3213 p = skip_space (p);
3214 }
3215 }
3216 while (*p++ == ',') ;
3217 input_line_pointer = (char *)(p-1);
3218 }
3219
3220 static void
3221 z80_cons (int size)
3222 {
3223 const char *p;
3224 expressionS exp;
3225
3226 if (is_it_end_of_statement ())
3227 {
3228 demand_empty_rest_of_line ();
3229 return;
3230 }
3231 p = skip_space (input_line_pointer);
3232
3233 do
3234 {
3235 p = parse_exp (p, &exp);
3236 if (exp.X_op == O_md1 || exp.X_op == O_register)
3237 {
3238 ill_op ();
3239 break;
3240 }
3241 if (exp.X_md)
3242 as_warn (_("parentheses ignored"));
3243 emit_data_val (&exp, size);
3244 p = skip_space (p);
3245 } while (*p++ == ',') ;
3246 input_line_pointer = (char *)(p-1);
3247 }
3248
3249 /* next functions were commented out because it is difficult to mix
3250 both ADL and Z80 mode instructions within one COFF file:
3251 objdump cannot recognize point of mode switching.
3252 */
3253 static void
3254 set_cpu_mode (int mode)
3255 {
3256 if (ins_ok & INS_EZ80)
3257 cpu_mode = mode;
3258 else
3259 error (_("CPU mode is unsupported by target"));
3260 }
3261
3262 static void
3263 assume (int arg ATTRIBUTE_UNUSED)
3264 {
3265 char *name;
3266 char c;
3267 int n;
3268
3269 input_line_pointer = (char*)skip_space (input_line_pointer);
3270 c = get_symbol_name (& name);
3271 if (strncasecmp (name, "ADL", 4) != 0)
3272 {
3273 ill_op ();
3274 return;
3275 }
3276
3277 restore_line_pointer (c);
3278 input_line_pointer = (char*)skip_space (input_line_pointer);
3279 if (*input_line_pointer++ != '=')
3280 {
3281 error (_("assignment expected"));
3282 return;
3283 }
3284 input_line_pointer = (char*)skip_space (input_line_pointer);
3285 n = get_single_number ();
3286
3287 set_cpu_mode (n);
3288 }
3289
3290 static const char *
3291 emit_mulub (char prefix ATTRIBUTE_UNUSED, char opcode, const char * args)
3292 {
3293 const char *p;
3294
3295 p = skip_space (args);
3296 if (TOLOWER (*p++) != 'a' || *p++ != ',')
3297 ill_op ();
3298 else
3299 {
3300 char *q, reg;
3301
3302 reg = TOLOWER (*p++);
3303 switch (reg)
3304 {
3305 case 'b':
3306 case 'c':
3307 case 'd':
3308 case 'e':
3309 check_mach (INS_R800);
3310 if (!*skip_space (p))
3311 {
3312 q = frag_more (2);
3313 *q++ = prefix;
3314 *q = opcode + ((reg - 'b') << 3);
3315 break;
3316 }
3317 /* Fall through. */
3318 default:
3319 ill_op ();
3320 }
3321 }
3322 return p;
3323 }
3324
3325 static const char *
3326 emit_muluw (char prefix ATTRIBUTE_UNUSED, char opcode, const char * args)
3327 {
3328 const char *p;
3329
3330 p = skip_space (args);
3331 if (TOLOWER (*p++) != 'h' || TOLOWER (*p++) != 'l' || *p++ != ',')
3332 ill_op ();
3333 else
3334 {
3335 expressionS reg;
3336 char *q;
3337
3338 p = parse_exp (p, & reg);
3339
3340 if ((!reg.X_md) && reg.X_op == O_register)
3341 switch (reg.X_add_number)
3342 {
3343 case REG_BC:
3344 case REG_SP:
3345 check_mach (INS_R800);
3346 q = frag_more (2);
3347 *q++ = prefix;
3348 *q = opcode + ((reg.X_add_number & 3) << 4);
3349 break;
3350 default:
3351 ill_op ();
3352 }
3353 }
3354 return p;
3355 }
3356
3357 static int
3358 assemble_suffix (const char **suffix)
3359 {
3360 static
3361 const char sf[8][4] =
3362 {
3363 "il",
3364 "is",
3365 "l",
3366 "lil",
3367 "lis",
3368 "s",
3369 "sil",
3370 "sis"
3371 };
3372 const char *p;
3373 const char (*t)[4];
3374 char sbuf[4];
3375 int i;
3376
3377 p = *suffix;
3378 if (*p++ != '.')
3379 return 0;
3380
3381 for (i = 0; (i < 3) && (ISALPHA (*p)); i++)
3382 sbuf[i] = TOLOWER (*p++);
3383 if (*p && !ISSPACE (*p))
3384 return 0;
3385 *suffix = p;
3386 sbuf[i] = 0;
3387
3388 t = bsearch (sbuf, sf, ARRAY_SIZE (sf), sizeof (sf[0]), (int(*)(const void*, const void*)) strcmp);
3389 if (t == NULL)
3390 return 0;
3391 i = t - sf;
3392 switch (i)
3393 {
3394 case 0: /* IL */
3395 i = cpu_mode ? 0x5B : 0x52;
3396 break;
3397 case 1: /* IS */
3398 i = cpu_mode ? 0x49 : 0x40;
3399 break;
3400 case 2: /* L */
3401 i = cpu_mode ? 0x5B : 0x49;
3402 break;
3403 case 3: /* LIL */
3404 i = 0x5B;
3405 break;
3406 case 4: /* LIS */
3407 i = 0x49;
3408 break;
3409 case 5: /* S */
3410 i = cpu_mode ? 0x52 : 0x40;
3411 break;
3412 case 6: /* SIL */
3413 i = 0x52;
3414 break;
3415 case 7: /* SIS */
3416 i = 0x40;
3417 break;
3418 }
3419 *frag_more (1) = (char)i;
3420 switch (i)
3421 {
3422 case 0x40: inst_mode = INST_MODE_FORCED | INST_MODE_S | INST_MODE_IS; break;
3423 case 0x49: inst_mode = INST_MODE_FORCED | INST_MODE_L | INST_MODE_IS; break;
3424 case 0x52: inst_mode = INST_MODE_FORCED | INST_MODE_S | INST_MODE_IL; break;
3425 case 0x5B: inst_mode = INST_MODE_FORCED | INST_MODE_L | INST_MODE_IL; break;
3426 }
3427 return 1;
3428 }
3429
3430 static void
3431 psect (int arg)
3432 {
3433 #if defined(OBJ_ELF)
3434 return obj_elf_section (arg);
3435 #elif defined(OBJ_COFF)
3436 return obj_coff_section (arg);
3437 #else
3438 #error Unknown object format
3439 #endif
3440 }
3441
3442 static void
3443 set_inss (int inss)
3444 {
3445 int old_ins;
3446
3447 if (!sdcc_compat)
3448 as_fatal (_("Invalid directive"));
3449
3450 old_ins = ins_ok;
3451 ins_ok &= INS_MARCH_MASK;
3452 ins_ok |= inss;
3453 if (old_ins != ins_ok)
3454 cpu_mode = 0;
3455 }
3456
3457 static void
3458 ignore (int arg ATTRIBUTE_UNUSED)
3459 {
3460 ignore_rest_of_line ();
3461 }
3462
3463 static void
3464 area (int arg)
3465 {
3466 char *p;
3467 if (!sdcc_compat)
3468 as_fatal (_("Invalid directive"));
3469 for (p = input_line_pointer; *p && *p != '(' && *p != '\n'; p++)
3470 ;
3471 if (*p == '(')
3472 {
3473 *p = '\n';
3474 psect (arg);
3475 *p++ = '(';
3476 ignore_rest_of_line ();
3477 }
3478 else
3479 psect (arg);
3480 }
3481
3482 /* Handle the .bss pseudo-op. */
3483
3484 static void
3485 s_bss (int ignore ATTRIBUTE_UNUSED)
3486 {
3487 subseg_set (bss_section, 0);
3488 demand_empty_rest_of_line ();
3489 }
3490
3491 /* Port specific pseudo ops. */
3492 const pseudo_typeS md_pseudo_table[] =
3493 {
3494 { ".area", area, 0},
3495 { ".assume", assume, 0},
3496 { ".ez80", set_inss, INS_EZ80},
3497 { ".gbz80", set_inss, INS_GBZ80},
3498 { ".module", ignore, 0},
3499 { ".optsdcc", ignore, 0},
3500 { ".r800", set_inss, INS_R800},
3501 { ".set", s_set, 0},
3502 { ".z180", set_inss, INS_Z180},
3503 { ".hd64", set_inss, INS_Z180},
3504 { ".z80", set_inss, INS_Z80},
3505 { ".z80n", set_inss, INS_Z80N},
3506 { "bss", s_bss, 0},
3507 { "db" , emit_data, 1},
3508 { "d24", z80_cons, 3},
3509 { "d32", z80_cons, 4},
3510 { "def24", z80_cons, 3},
3511 { "def32", z80_cons, 4},
3512 { "defb", emit_data, 1},
3513 { "defm", emit_data, 1},
3514 { "defs", s_space, 1}, /* Synonym for ds on some assemblers. */
3515 { "defw", z80_cons, 2},
3516 { "ds", s_space, 1}, /* Fill with bytes rather than words. */
3517 { "dw", z80_cons, 2},
3518 { "psect", psect, 0}, /* TODO: Translate attributes. */
3519 { "set", 0, 0}, /* Real instruction on z80. */
3520 { "xdef", s_globl, 0}, /* Synonym for .GLOBAL */
3521 { "xref", s_ignore, 0}, /* Synonym for .EXTERN */
3522 { NULL, 0, 0 }
3523 } ;
3524
3525 static table_t instab[] =
3526 {
3527 { "adc", 0x88, 0x4A, emit_adc, INS_ALL },
3528 { "add", 0x80, 0x09, emit_add, INS_ALL },
3529 { "and", 0x00, 0xA0, emit_s, INS_ALL },
3530 { "bit", 0xCB, 0x40, emit_bit, INS_ALL },
3531 { "brlc", 0xED, 0x2C, emit_bshft,INS_Z80N },
3532 { "bsla", 0xED, 0x28, emit_bshft,INS_Z80N },
3533 { "bsra", 0xED, 0x29, emit_bshft,INS_Z80N },
3534 { "bsrf", 0xED, 0x2B, emit_bshft,INS_Z80N },
3535 { "bsrl", 0xED, 0x2A, emit_bshft,INS_Z80N },
3536 { "call", 0xCD, 0xC4, emit_jpcc, INS_ALL },
3537 { "ccf", 0x00, 0x3F, emit_insn, INS_ALL },
3538 { "cp", 0x00, 0xB8, emit_s, INS_ALL },
3539 { "cpd", 0xED, 0xA9, emit_insn, INS_NOT_GBZ80 },
3540 { "cpdr", 0xED, 0xB9, emit_insn, INS_NOT_GBZ80 },
3541 { "cpi", 0xED, 0xA1, emit_insn, INS_NOT_GBZ80 },
3542 { "cpir", 0xED, 0xB1, emit_insn, INS_NOT_GBZ80 },
3543 { "cpl", 0x00, 0x2F, emit_insn, INS_ALL },
3544 { "daa", 0x00, 0x27, emit_insn, INS_ALL },
3545 { "dec", 0x0B, 0x05, emit_incdec,INS_ALL },
3546 { "di", 0x00, 0xF3, emit_insn, INS_ALL },
3547 { "djnz", 0x00, 0x10, emit_jr, INS_NOT_GBZ80 },
3548 { "ei", 0x00, 0xFB, emit_insn, INS_ALL },
3549 { "ex", 0x00, 0x00, emit_ex, INS_NOT_GBZ80 },
3550 { "exx", 0x00, 0xD9, emit_insn, INS_NOT_GBZ80 },
3551 { "halt", 0x00, 0x76, emit_insn, INS_ALL },
3552 { "im", 0xED, 0x46, emit_im, INS_NOT_GBZ80 },
3553 { "in", 0x00, 0x00, emit_in, INS_NOT_GBZ80 },
3554 { "in0", 0xED, 0x00, emit_in0, INS_Z180|INS_EZ80 },
3555 { "inc", 0x03, 0x04, emit_incdec,INS_ALL },
3556 { "ind", 0xED, 0xAA, emit_insn, INS_NOT_GBZ80 },
3557 { "ind2", 0xED, 0x8C, emit_insn, INS_EZ80 },
3558 { "ind2r",0xED, 0x9C, emit_insn, INS_EZ80 },
3559 { "indm", 0xED, 0x8A, emit_insn, INS_EZ80 },
3560 { "indmr",0xED, 0x9A, emit_insn, INS_EZ80 },
3561 { "indr", 0xED, 0xBA, emit_insn, INS_NOT_GBZ80 },
3562 { "indrx",0xED, 0xCA, emit_insn, INS_EZ80 },
3563 { "ini", 0xED, 0xA2, emit_insn, INS_NOT_GBZ80 },
3564 { "ini2", 0xED, 0x84, emit_insn, INS_EZ80 },
3565 { "ini2r",0xED, 0x94, emit_insn, INS_EZ80 },
3566 { "inim", 0xED, 0x82, emit_insn, INS_EZ80 },
3567 { "inimr",0xED, 0x92, emit_insn, INS_EZ80 },
3568 { "inir", 0xED, 0xB2, emit_insn, INS_NOT_GBZ80 },
3569 { "inirx",0xED, 0xC2, emit_insn, INS_EZ80 },
3570 { "jp", 0xC3, 0xC2, emit_jpcc, INS_ALL },
3571 { "jr", 0x18, 0x20, emit_jrcc, INS_ALL },
3572 { "ld", 0x00, 0x00, emit_ld, INS_ALL },
3573 { "ldd", 0xED, 0xA8, emit_lddldi,INS_ALL }, /* GBZ80 has special meaning */
3574 { "lddr", 0xED, 0xB8, emit_insn, INS_NOT_GBZ80 },
3575 { "lddrx",0xED, 0xBC, emit_insn, INS_Z80N },
3576 { "lddx", 0xED, 0xAC, emit_insn, INS_Z80N },
3577 { "ldh", 0xE0, 0x00, emit_ldh, INS_GBZ80 },
3578 { "ldhl", 0x00, 0xF8, emit_ldhl, INS_GBZ80 },
3579 { "ldi", 0xED, 0xA0, emit_lddldi,INS_ALL }, /* GBZ80 has special meaning */
3580 { "ldir", 0xED, 0xB0, emit_insn, INS_NOT_GBZ80 },
3581 { "ldirx",0xED, 0xB4, emit_insn, INS_Z80N },
3582 { "ldix", 0xED, 0xA4, emit_insn, INS_Z80N },
3583 { "ldpirx",0xED,0xB7, emit_insn, INS_Z80N },
3584 { "ldws", 0xED, 0xA5, emit_insn, INS_Z80N },
3585 { "lea", 0xED, 0x02, emit_lea, INS_EZ80 },
3586 { "mirror",0xED,0x24, emit_insn, INS_Z80N },
3587 { "mlt", 0xED, 0x4C, emit_mlt, INS_Z180|INS_EZ80|INS_Z80N },
3588 { "mul", 0xED, 0x30, emit_mul, INS_Z80N },
3589 { "mulub",0xED, 0xC5, emit_mulub,INS_R800 },
3590 { "muluw",0xED, 0xC3, emit_muluw,INS_R800 },
3591 { "neg", 0xED, 0x44, emit_insn, INS_NOT_GBZ80 },
3592 { "nextreg",0xED,0x91,emit_nextreg,INS_Z80N },
3593 { "nop", 0x00, 0x00, emit_insn, INS_ALL },
3594 { "or", 0x00, 0xB0, emit_s, INS_ALL },
3595 { "otd2r",0xED, 0xBC, emit_insn, INS_EZ80 },
3596 { "otdm", 0xED, 0x8B, emit_insn, INS_Z180|INS_EZ80 },
3597 { "otdmr",0xED, 0x9B, emit_insn, INS_Z180|INS_EZ80 },
3598 { "otdr", 0xED, 0xBB, emit_insn, INS_NOT_GBZ80 },
3599 { "otdrx",0xED, 0xCB, emit_insn, INS_EZ80 },
3600 { "oti2r",0xED, 0xB4, emit_insn, INS_EZ80 },
3601 { "otim", 0xED, 0x83, emit_insn, INS_Z180|INS_EZ80 },
3602 { "otimr",0xED, 0x93, emit_insn, INS_Z180|INS_EZ80 },
3603 { "otir", 0xED, 0xB3, emit_insn, INS_NOT_GBZ80 },
3604 { "otirx",0xED, 0xC3, emit_insn, INS_EZ80 },
3605 { "out", 0x00, 0x00, emit_out, INS_NOT_GBZ80 },
3606 { "out0", 0xED, 0x01, emit_out0, INS_Z180|INS_EZ80 },
3607 { "outd", 0xED, 0xAB, emit_insn, INS_NOT_GBZ80 },
3608 { "outd2",0xED, 0xAC, emit_insn, INS_EZ80 },
3609 { "outi", 0xED, 0xA3, emit_insn, INS_NOT_GBZ80 },
3610 { "outi2",0xED, 0xA4, emit_insn, INS_EZ80 },
3611 { "outinb",0xED,0x90, emit_insn, INS_Z80N },
3612 { "pea", 0xED, 0x65, emit_pea, INS_EZ80 },
3613 { "pixelad",0xED,0x94,emit_insn, INS_Z80N },
3614 { "pixeldn",0xED,0x93,emit_insn, INS_Z80N },
3615 { "pop", 0x00, 0xC1, emit_pop, INS_ALL },
3616 { "push", 0x00, 0xC5, emit_push, INS_ALL },
3617 { "res", 0xCB, 0x80, emit_bit, INS_ALL },
3618 { "ret", 0xC9, 0xC0, emit_retcc,INS_ALL },
3619 { "reti", 0xED, 0x4D, emit_reti, INS_ALL }, /*GBZ80 has its own opcode for it*/
3620 { "retn", 0xED, 0x45, emit_insn, INS_NOT_GBZ80 },
3621 { "rl", 0xCB, 0x10, emit_mr, INS_ALL },
3622 { "rla", 0x00, 0x17, emit_insn, INS_ALL },
3623 { "rlc", 0xCB, 0x00, emit_mr, INS_ALL },
3624 { "rlca", 0x00, 0x07, emit_insn, INS_ALL },
3625 { "rld", 0xED, 0x6F, emit_insn, INS_NOT_GBZ80 },
3626 { "rr", 0xCB, 0x18, emit_mr, INS_ALL },
3627 { "rra", 0x00, 0x1F, emit_insn, INS_ALL },
3628 { "rrc", 0xCB, 0x08, emit_mr, INS_ALL },
3629 { "rrca", 0x00, 0x0F, emit_insn, INS_ALL },
3630 { "rrd", 0xED, 0x67, emit_insn, INS_NOT_GBZ80 },
3631 { "rsmix",0xED, 0x7E, emit_insn, INS_EZ80 },
3632 { "rst", 0x00, 0xC7, emit_rst, INS_ALL },
3633 { "sbc", 0x98, 0x42, emit_adc, INS_ALL },
3634 { "scf", 0x00, 0x37, emit_insn, INS_ALL },
3635 { "set", 0xCB, 0xC0, emit_bit, INS_ALL },
3636 { "setae",0xED, 0x95, emit_insn, INS_Z80N },
3637 { "sl1", 0xCB, 0x30, emit_mr, INS_SLI|INS_Z80N },
3638 { "sla", 0xCB, 0x20, emit_mr, INS_ALL },
3639 { "sli", 0xCB, 0x30, emit_mr, INS_SLI|INS_Z80N },
3640 { "sll", 0xCB, 0x30, emit_mr, INS_SLI|INS_Z80N },
3641 { "slp", 0xED, 0x76, emit_insn, INS_Z180|INS_EZ80 },
3642 { "sra", 0xCB, 0x28, emit_mr, INS_ALL },
3643 { "srl", 0xCB, 0x38, emit_mr, INS_ALL },
3644 { "stmix",0xED, 0x7D, emit_insn, INS_EZ80 },
3645 { "stop", 0x00, 0x10, emit_insn, INS_GBZ80 },
3646 { "sub", 0x00, 0x90, emit_sub, INS_ALL },
3647 { "swap", 0xCB, 0x30, emit_swap, INS_GBZ80|INS_Z80N },
3648 { "swapnib",0xED,0x23,emit_insn, INS_Z80N },
3649 { "test", 0xED, 0x27, emit_insn_n, INS_Z80N },
3650 { "tst", 0xED, 0x04, emit_tst, INS_Z180|INS_EZ80|INS_Z80N },
3651 { "tstio",0xED, 0x74, emit_insn_n,INS_Z180|INS_EZ80 },
3652 { "xor", 0x00, 0xA8, emit_s, INS_ALL },
3653 } ;
3654
3655 void
3656 md_assemble (char *str)
3657 {
3658 const char *p;
3659 char * old_ptr;
3660 int i;
3661 table_t *insp;
3662
3663 err_flag = 0;
3664 inst_mode = cpu_mode ? (INST_MODE_L | INST_MODE_IL) : (INST_MODE_S | INST_MODE_IS);
3665 old_ptr = input_line_pointer;
3666 p = skip_space (str);
3667 for (i = 0; (i < BUFLEN) && (ISALPHA (*p) || ISDIGIT (*p));)
3668 buf[i++] = TOLOWER (*p++);
3669
3670 if (i == BUFLEN)
3671 {
3672 buf[BUFLEN-3] = buf[BUFLEN-2] = '.'; /* Mark opcode as abbreviated. */
3673 buf[BUFLEN-1] = 0;
3674 as_bad (_("Unknown instruction '%s'"), buf);
3675 }
3676 else
3677 {
3678 dwarf2_emit_insn (0);
3679 if ((*p) && (!ISSPACE (*p)))
3680 {
3681 if (*p != '.' || !(ins_ok & INS_EZ80) || !assemble_suffix (&p))
3682 {
3683 as_bad (_("syntax error"));
3684 goto end;
3685 }
3686 }
3687 buf[i] = 0;
3688 p = skip_space (p);
3689 key = buf;
3690
3691 insp = bsearch (&key, instab, ARRAY_SIZE (instab),
3692 sizeof (instab[0]), key_cmp);
3693 if (!insp || (insp->inss && !(insp->inss & ins_ok)))
3694 {
3695 *frag_more (1) = 0;
3696 as_bad (_("Unknown instruction `%s'"), buf);
3697 }
3698 else
3699 {
3700 p = insp->fp (insp->prefix, insp->opcode, p);
3701 p = skip_space (p);
3702 if ((!err_flag) && *p)
3703 as_bad (_("junk at end of line, "
3704 "first unrecognized character is `%c'"), *p);
3705 }
3706 }
3707 end:
3708 input_line_pointer = old_ptr;
3709 }
3710
3711 static int
3712 signed_overflow (signed long value, unsigned bitsize)
3713 {
3714 signed long max = (signed long) ((1UL << (bitsize - 1)) - 1);
3715 return value < -max - 1 || value > max;
3716 }
3717
3718 static int
3719 unsigned_overflow (unsigned long value, unsigned bitsize)
3720 {
3721 return value >> (bitsize - 1) >> 1 != 0;
3722 }
3723
3724 static int
3725 is_overflow (long value, unsigned bitsize)
3726 {
3727 if (value < 0)
3728 return signed_overflow (value, bitsize);
3729 return unsigned_overflow ((unsigned long)value, bitsize);
3730 }
3731
3732 void
3733 md_apply_fix (fixS * fixP, valueT* valP, segT seg)
3734 {
3735 long val = *valP;
3736 char *p_lit = fixP->fx_where + fixP->fx_frag->fr_literal;
3737
3738 if (fixP->fx_addsy == NULL)
3739 fixP->fx_done = 1;
3740 else if (fixP->fx_pcrel)
3741 {
3742 segT s = S_GET_SEGMENT (fixP->fx_addsy);
3743 if (s == seg || s == absolute_section)
3744 {
3745 val += S_GET_VALUE (fixP->fx_addsy);
3746 fixP->fx_done = 1;
3747 }
3748 }
3749
3750 switch (fixP->fx_r_type)
3751 {
3752 case BFD_RELOC_8_PCREL:
3753 case BFD_RELOC_Z80_DISP8:
3754 case BFD_RELOC_8:
3755 case BFD_RELOC_16:
3756 case BFD_RELOC_24:
3757 case BFD_RELOC_32:
3758 case BFD_RELOC_Z80_16_BE:
3759 fixP->fx_no_overflow = 0;
3760 break;
3761 default:
3762 fixP->fx_no_overflow = 1;
3763 break;
3764 }
3765
3766 switch (fixP->fx_r_type)
3767 {
3768 case BFD_RELOC_8_PCREL:
3769 case BFD_RELOC_Z80_DISP8:
3770 if (fixP->fx_done && signed_overflow (val, 8))
3771 as_bad_where (fixP->fx_file, fixP->fx_line,
3772 _("8-bit signed offset out of range (%+ld)"), val);
3773 *p_lit++ = val;
3774 break;
3775
3776 case BFD_RELOC_Z80_BYTE0:
3777 *p_lit++ = val;
3778 break;
3779
3780 case BFD_RELOC_Z80_BYTE1:
3781 *p_lit++ = (val >> 8);
3782 break;
3783
3784 case BFD_RELOC_Z80_BYTE2:
3785 *p_lit++ = (val >> 16);
3786 break;
3787
3788 case BFD_RELOC_Z80_BYTE3:
3789 *p_lit++ = (val >> 24);
3790 break;
3791
3792 case BFD_RELOC_8:
3793 if (fixP->fx_done && is_overflow(val, 8))
3794 as_warn_where (fixP->fx_file, fixP->fx_line,
3795 _("8-bit overflow (%+ld)"), val);
3796 *p_lit++ = val;
3797 break;
3798
3799 case BFD_RELOC_Z80_WORD1:
3800 *p_lit++ = (val >> 16);
3801 *p_lit++ = (val >> 24);
3802 break;
3803
3804 case BFD_RELOC_Z80_WORD0:
3805 *p_lit++ = val;
3806 *p_lit++ = (val >> 8);
3807 break;
3808
3809 case BFD_RELOC_16:
3810 if (fixP->fx_done && is_overflow(val, 16))
3811 as_warn_where (fixP->fx_file, fixP->fx_line,
3812 _("16-bit overflow (%+ld)"), val);
3813 *p_lit++ = val;
3814 *p_lit++ = (val >> 8);
3815 break;
3816
3817 case BFD_RELOC_24: /* Def24 may produce this. */
3818 if (fixP->fx_done && is_overflow(val, 24))
3819 as_warn_where (fixP->fx_file, fixP->fx_line,
3820 _("24-bit overflow (%+ld)"), val);
3821 *p_lit++ = val;
3822 *p_lit++ = (val >> 8);
3823 *p_lit++ = (val >> 16);
3824 break;
3825
3826 case BFD_RELOC_32: /* Def32 and .long may produce this. */
3827 if (fixP->fx_done && is_overflow(val, 32))
3828 as_warn_where (fixP->fx_file, fixP->fx_line,
3829 _("32-bit overflow (%+ld)"), val);
3830 *p_lit++ = val;
3831 *p_lit++ = (val >> 8);
3832 *p_lit++ = (val >> 16);
3833 *p_lit++ = (val >> 24);
3834 break;
3835
3836 case BFD_RELOC_Z80_16_BE: /* Z80N PUSH nn instruction produce this. */
3837 *p_lit++ = val >> 8;
3838 *p_lit++ = val;
3839 break;
3840
3841 default:
3842 printf (_("md_apply_fix: unknown reloc type 0x%x\n"), fixP->fx_r_type);
3843 abort ();
3844 }
3845 }
3846
3847 /* GAS will call this to generate a reloc. GAS will pass the
3848 resulting reloc to `bfd_install_relocation'. This currently works
3849 poorly, as `bfd_install_relocation' often does the wrong thing, and
3850 instances of `tc_gen_reloc' have been written to work around the
3851 problems, which in turns makes it difficult to fix
3852 `bfd_install_relocation'. */
3853
3854 /* If while processing a fixup, a reloc really
3855 needs to be created then it is done here. */
3856
3857 arelent *
3858 tc_gen_reloc (asection *seg ATTRIBUTE_UNUSED , fixS *fixp)
3859 {
3860 arelent *reloc;
3861
3862 if (fixp->fx_subsy != NULL)
3863 {
3864 as_bad_subtract (fixp);
3865 return NULL;
3866 }
3867
3868 reloc = XNEW (arelent);
3869 reloc->sym_ptr_ptr = XNEW (asymbol *);
3870 *reloc->sym_ptr_ptr = symbol_get_bfdsym (fixp->fx_addsy);
3871 reloc->address = fixp->fx_frag->fr_address + fixp->fx_where;
3872 reloc->addend = fixp->fx_offset;
3873 reloc->howto = bfd_reloc_type_lookup (stdoutput, fixp->fx_r_type);
3874 if (reloc->howto == NULL)
3875 {
3876 as_bad_where (fixp->fx_file, fixp->fx_line,
3877 _("reloc %d not supported by object file format"),
3878 (int) fixp->fx_r_type);
3879 return NULL;
3880 }
3881
3882 if (fixp->fx_r_type == BFD_RELOC_VTABLE_INHERIT
3883 || fixp->fx_r_type == BFD_RELOC_VTABLE_ENTRY)
3884 reloc->address = fixp->fx_offset;
3885
3886 return reloc;
3887 }
3888
3889 int
3890 z80_tc_labels_without_colon (void)
3891 {
3892 return colonless_labels;
3893 }
3894
3895 int
3896 z80_tc_label_is_local (const char *name)
3897 {
3898 const char *n;
3899 const char *p;
3900 if (local_label_prefix == NULL)
3901 return 0;
3902 for (p = local_label_prefix, n = name; *p && *n && *n == *p; p++, n++)
3903 ;
3904 return *p == '\0';
3905 }
3906
3907 /* Parse floating point number from string and compute mantissa and
3908 exponent. Mantissa is normalized.
3909 */
3910 #define EXP_MIN -0x10000
3911 #define EXP_MAX 0x10000
3912 static int
3913 str_to_broken_float (bool *signP, uint64_t *mantissaP, int *expP)
3914 {
3915 char *p;
3916 bool sign;
3917 uint64_t mantissa = 0;
3918 int exponent = 0;
3919 int i;
3920
3921 p = (char*)skip_space (input_line_pointer);
3922 sign = (*p == '-');
3923 *signP = sign;
3924 if (sign || *p == '+')
3925 ++p;
3926 if (strncasecmp (p, "NaN", 3) == 0)
3927 {
3928 *mantissaP = 0;
3929 *expP = 0;
3930 input_line_pointer = p + 3;
3931 return 1;
3932 }
3933 if (strncasecmp (p, "inf", 3) == 0)
3934 {
3935 *mantissaP = 1ull << 63;
3936 *expP = EXP_MAX;
3937 input_line_pointer = p + 3;
3938 return 1;
3939 }
3940 for (; ISDIGIT (*p); ++p)
3941 {
3942 if (mantissa >> 60)
3943 {
3944 if (*p >= '5')
3945 mantissa++;
3946 break;
3947 }
3948 mantissa = mantissa * 10 + (*p - '0');
3949 }
3950 /* skip non-significant digits */
3951 for (; ISDIGIT (*p); ++p)
3952 exponent++;
3953
3954 if (*p == '.')
3955 {
3956 p++;
3957 if (!exponent) /* If no precision overflow. */
3958 {
3959 for (; ISDIGIT (*p); ++p, --exponent)
3960 {
3961 if (mantissa >> 60)
3962 {
3963 if (*p >= '5')
3964 mantissa++;
3965 break;
3966 }
3967 mantissa = mantissa * 10 + (*p - '0');
3968 }
3969 }
3970 for (; ISDIGIT (*p); ++p)
3971 ;
3972 }
3973 if (*p == 'e' || *p == 'E')
3974 {
3975 int es;
3976 int t = 0;
3977 ++p;
3978 es = (*p == '-');
3979 if (es || *p == '+')
3980 p++;
3981 for (; ISDIGIT (*p); ++p)
3982 {
3983 if (t < 100)
3984 t = t * 10 + (*p - '0');
3985 }
3986 exponent += (es) ? -t : t;
3987 }
3988 if (ISALNUM (*p) || *p == '.')
3989 return 0;
3990 input_line_pointer = p;
3991 if (mantissa == 0)
3992 {
3993 *mantissaP = 1ull << 63;
3994 *expP = EXP_MIN;
3995 return 1; /* result is 0 */
3996 }
3997 /* normalization */
3998 for (; mantissa <= ~0ull/10; --exponent)
3999 mantissa *= 10;
4000 /* Now we have sign, mantissa, and signed decimal exponent
4001 need to recompute to binary exponent. */
4002 for (i = 64; exponent > 0; --exponent)
4003 {
4004 /* be sure that no integer overflow */
4005 while (mantissa > ~0ull/10)
4006 {
4007 mantissa >>= 1;
4008 i += 1;
4009 }
4010 mantissa *= 10;
4011 }
4012 for (; exponent < 0; ++exponent)
4013 {
4014 while (!(mantissa >> 63))
4015 {
4016 mantissa <<= 1;
4017 i -= 1;
4018 }
4019 mantissa /= 10;
4020 }
4021 /* normalization */
4022 for (; !(mantissa >> 63); --i)
4023 mantissa <<= 1;
4024 *mantissaP = mantissa;
4025 *expP = i;
4026 return 1;
4027 }
4028
4029 static const char *
4030 str_to_zeda32(char *litP, int *sizeP)
4031 {
4032 uint64_t mantissa;
4033 bool sign;
4034 int exponent;
4035 unsigned i;
4036
4037 *sizeP = 4;
4038 if (!str_to_broken_float (&sign, &mantissa, &exponent))
4039 return _("invalid syntax");
4040 /* I do not know why decrement is needed */
4041 --exponent;
4042 /* shift by 39 bits right keeping 25 bit mantissa for rounding */
4043 mantissa >>= 39;
4044 /* do rounding */
4045 ++mantissa;
4046 /* make 24 bit mantissa */
4047 mantissa >>= 1;
4048 /* check for overflow */
4049 if (mantissa >> 24)
4050 {
4051 mantissa >>= 1;
4052 ++exponent;
4053 }
4054 /* check for 0 */
4055 if (exponent < -127)
4056 {
4057 exponent = -128;
4058 mantissa = 0;
4059 }
4060 else if (exponent > 127)
4061 {
4062 exponent = -128;
4063 mantissa = sign ? 0xc00000 : 0x400000;
4064 }
4065 else if (mantissa == 0)
4066 {
4067 exponent = -128;
4068 mantissa = 0x200000;
4069 }
4070 else if (!sign)
4071 mantissa &= (1ull << 23) - 1;
4072 for (i = 0; i < 24; i += 8)
4073 *litP++ = (char)(mantissa >> i);
4074 *litP = (char)(0x80 + exponent);
4075 return NULL;
4076 }
4077
4078 /*
4079 Math48 by Anders Hejlsberg support.
4080 Mantissa is 39 bits wide, exponent 8 bit wide.
4081 Format is:
4082 bit 47: sign
4083 bit 46-8: normalized mantissa (bits 38-0, bit39 assumed to be 1)
4084 bit 7-0: exponent+128 (0 - value is null)
4085 MIN: 2.938735877e-39
4086 MAX: 1.701411835e+38
4087 */
4088 static const char *
4089 str_to_float48(char *litP, int *sizeP)
4090 {
4091 uint64_t mantissa;
4092 bool sign;
4093 int exponent;
4094 unsigned i;
4095
4096 *sizeP = 6;
4097 if (!str_to_broken_float (&sign, &mantissa, &exponent))
4098 return _("invalid syntax");
4099 /* shift by 23 bits right keeping 41 bit mantissa for rounding */
4100 mantissa >>= 23;
4101 /* do rounding */
4102 ++mantissa;
4103 /* make 40 bit mantissa */
4104 mantissa >>= 1;
4105 /* check for overflow */
4106 if (mantissa >> 40)
4107 {
4108 mantissa >>= 1;
4109 ++exponent;
4110 }
4111 if (exponent < -127)
4112 {
4113 memset (litP, 0, 6);
4114 return NULL;
4115 }
4116 if (exponent > 127)
4117 return _("overflow");
4118 if (!sign)
4119 mantissa &= (1ull << 39) - 1;
4120 *litP++ = (char)(0x80 + exponent);
4121 for (i = 0; i < 40; i += 8)
4122 *litP++ = (char)(mantissa >> i);
4123 return NULL;
4124 }
4125
4126 static const char *
4127 str_to_ieee754_h(char *litP, int *sizeP)
4128 {
4129 return ieee_md_atof ('h', litP, sizeP, false);
4130 }
4131
4132 static const char *
4133 str_to_ieee754_s(char *litP, int *sizeP)
4134 {
4135 return ieee_md_atof ('s', litP, sizeP, false);
4136 }
4137
4138 static const char *
4139 str_to_ieee754_d(char *litP, int *sizeP)
4140 {
4141 return ieee_md_atof ('d', litP, sizeP, false);
4142 }
4143
4144 #ifdef TARGET_USE_CFIPOP
4145 /* Initialize the DWARF-2 unwind information for this procedure. */
4146 void
4147 z80_tc_frame_initial_instructions (void)
4148 {
4149 static int sp_regno = -1;
4150
4151 if (sp_regno < 0)
4152 sp_regno = z80_tc_regname_to_dw2regnum ("sp");
4153
4154 cfi_add_CFA_def_cfa (sp_regno, 0);
4155 }
4156
4157 int
4158 z80_tc_regname_to_dw2regnum (const char *regname)
4159 {
4160 static const char *regs[] =
4161 { /* same registers as for GDB */
4162 "af", "bc", "de", "hl",
4163 "sp", "pc", "ix", "iy",
4164 "af_", "bc_", "de_", "hl_",
4165 "ir"
4166 };
4167 unsigned i;
4168
4169 for (i = 0; i < ARRAY_SIZE(regs); ++i)
4170 if (!strcasecmp (regs[i], regname))
4171 return i;
4172
4173 return -1;
4174 }
4175 #endif
4176
4177 /* Implement DWARF2_ADDR_SIZE. */
4178 int
4179 z80_dwarf2_addr_size (const bfd *abfd)
4180 {
4181 switch (bfd_get_mach (abfd))
4182 {
4183 case bfd_mach_ez80_adl:
4184 return 3;
4185 default:
4186 return 2;
4187 }
4188 }