Commit | Line | Data |
---|---|---|
252b5132 | 1 | /* tc-z8k.c -- Assemble code for the Zilog Z800n |
7f31df7c | 2 | Copyright 1992, 1993, 1994, 1995, 1996, 1998, 2000, 2001, 2002, 2003 |
f7e42eb4 | 3 | Free Software Foundation, Inc. |
252b5132 RH |
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 2, 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, 59 Temple Place - Suite 330, Boston, MA | |
20 | 02111-1307, USA. */ | |
21 | ||
e0c6ed95 AM |
22 | /* Written By Steve Chamberlain <sac@cygnus.com>. */ |
23 | ||
252b5132 RH |
24 | #define DEFINE_TABLE |
25 | #include <stdio.h> | |
26 | ||
252b5132 RH |
27 | #include "as.h" |
28 | #include "bfd.h" | |
3882b010 | 29 | #include "safe-ctype.h" |
a5d2034a | 30 | #include "opcodes/z8k-opc.h" |
252b5132 | 31 | |
63a0b638 AM |
32 | const char comment_chars[] = "!"; |
33 | const char line_comment_chars[] = "#"; | |
34 | const char line_separator_chars[] = ";"; | |
252b5132 RH |
35 | |
36 | extern int machine; | |
37 | extern int coff_flags; | |
38 | int segmented_mode; | |
39 | const int md_reloc_size; | |
40 | ||
7f31df7c CG |
41 | /* This is non-zero if target was set from the command line. */ |
42 | static int z8k_target_from_cmdline; | |
43 | ||
78a33af2 | 44 | static void |
464800ca | 45 | s_segm (int segm) |
252b5132 | 46 | { |
7f31df7c CG |
47 | if (segm) |
48 | { | |
d5bf5799 CG |
49 | segmented_mode = 1; |
50 | machine = bfd_mach_z8001; | |
51 | coff_flags = F_Z8001; | |
7f31df7c CG |
52 | } |
53 | else | |
54 | { | |
d5bf5799 CG |
55 | segmented_mode = 0; |
56 | machine = bfd_mach_z8002; | |
57 | coff_flags = F_Z8002; | |
7f31df7c | 58 | } |
252b5132 RH |
59 | } |
60 | ||
e0c6ed95 | 61 | static void |
464800ca | 62 | even (int ignore ATTRIBUTE_UNUSED) |
252b5132 RH |
63 | { |
64 | frag_align (1, 0, 0); | |
65 | record_alignment (now_seg, 1); | |
66 | } | |
67 | ||
78a33af2 | 68 | static int |
464800ca | 69 | tohex (int c) |
252b5132 | 70 | { |
3882b010 | 71 | if (ISDIGIT (c)) |
252b5132 | 72 | return c - '0'; |
3882b010 | 73 | if (ISLOWER (c)) |
252b5132 RH |
74 | return c - 'a' + 10; |
75 | return c - 'A' + 10; | |
76 | } | |
77 | ||
78a33af2 | 78 | static void |
464800ca | 79 | sval (int ignore ATTRIBUTE_UNUSED) |
252b5132 | 80 | { |
252b5132 RH |
81 | SKIP_WHITESPACE (); |
82 | if (*input_line_pointer == '\'') | |
83 | { | |
84 | int c; | |
85 | input_line_pointer++; | |
86 | c = *input_line_pointer++; | |
87 | while (c != '\'') | |
88 | { | |
89 | if (c == '%') | |
90 | { | |
91 | c = (tohex (input_line_pointer[0]) << 4) | |
92 | | tohex (input_line_pointer[1]); | |
93 | input_line_pointer += 2; | |
94 | } | |
95 | FRAG_APPEND_1_CHAR (c); | |
96 | c = *input_line_pointer++; | |
97 | } | |
98 | demand_empty_rest_of_line (); | |
99 | } | |
252b5132 | 100 | } |
e0c6ed95 AM |
101 | |
102 | /* This table describes all the machine specific pseudo-ops the assembler | |
103 | has to support. The fields are: | |
104 | pseudo-op name without dot | |
105 | function to call to execute this pseudo-op | |
106 | Integer arg to pass to the function | |
107 | */ | |
108 | ||
109 | const pseudo_typeS md_pseudo_table[] = { | |
110 | {"int" , cons , 2}, | |
111 | {"data.b" , cons , 1}, | |
112 | {"data.w" , cons , 2}, | |
113 | {"data.l" , cons , 4}, | |
114 | {"form" , listing_psize , 0}, | |
115 | {"heading", listing_title , 0}, | |
116 | {"import" , s_ignore , 0}, | |
117 | {"page" , listing_eject , 0}, | |
118 | {"program", s_ignore , 0}, | |
7f31df7c CG |
119 | {"z8001" , s_segm , 1}, |
120 | {"z8002" , s_segm , 0}, | |
e0c6ed95 | 121 | |
7f31df7c CG |
122 | {"segm" , s_segm , 1}, |
123 | {"unsegm" , s_segm , 0}, | |
124 | {"unseg" , s_segm , 0}, | |
e0c6ed95 AM |
125 | {"name" , s_app_file , 0}, |
126 | {"global" , s_globl , 0}, | |
127 | {"wval" , cons , 2}, | |
128 | {"lval" , cons , 4}, | |
129 | {"bval" , cons , 1}, | |
130 | {"sval" , sval , 0}, | |
131 | {"rsect" , obj_coff_section, 0}, | |
132 | {"sect" , obj_coff_section, 0}, | |
133 | {"block" , s_space , 0}, | |
134 | {"even" , even , 0}, | |
135 | {0 , 0 , 0} | |
252b5132 RH |
136 | }; |
137 | ||
138 | const char EXP_CHARS[] = "eE"; | |
139 | ||
e0c6ed95 AM |
140 | /* Chars that mean this number is a floating point constant. |
141 | As in 0f12.456 | |
142 | or 0d1.2345e12 */ | |
252b5132 RH |
143 | const char FLT_CHARS[] = "rRsSfFdDxXpP"; |
144 | ||
e0c6ed95 AM |
145 | /* Opcode mnemonics. */ |
146 | static struct hash_control *opcode_hash_control; | |
252b5132 RH |
147 | |
148 | void | |
464800ca | 149 | md_begin (void) |
252b5132 | 150 | { |
78a33af2 AM |
151 | const opcode_entry_type *opcode; |
152 | int idx = -1; | |
252b5132 RH |
153 | |
154 | opcode_hash_control = hash_new (); | |
155 | ||
156 | for (opcode = z8k_table; opcode->name; opcode++) | |
157 | { | |
e0c6ed95 | 158 | /* Only enter unique codes into the table. */ |
78a33af2 AM |
159 | if (idx != opcode->idx) |
160 | hash_insert (opcode_hash_control, opcode->name, (char *) opcode); | |
161 | idx = opcode->idx; | |
252b5132 RH |
162 | } |
163 | ||
e0c6ed95 | 164 | /* Default to z8002. */ |
7f31df7c CG |
165 | if (! z8k_target_from_cmdline) |
166 | s_segm (0); | |
252b5132 | 167 | |
e0c6ed95 | 168 | /* Insert the pseudo ops, too. */ |
252b5132 RH |
169 | for (idx = 0; md_pseudo_table[idx].poc_name; idx++) |
170 | { | |
171 | opcode_entry_type *fake_opcode; | |
172 | fake_opcode = (opcode_entry_type *) malloc (sizeof (opcode_entry_type)); | |
879db8be NC |
173 | fake_opcode->name = md_pseudo_table[idx].poc_name; |
174 | fake_opcode->func = (void *) (md_pseudo_table + idx); | |
252b5132 RH |
175 | fake_opcode->opcode = 250; |
176 | hash_insert (opcode_hash_control, fake_opcode->name, fake_opcode); | |
177 | } | |
252b5132 RH |
178 | } |
179 | ||
19d63e5d | 180 | struct z8k_exp { |
252b5132 RH |
181 | char *e_beg; |
182 | char *e_end; | |
183 | expressionS e_exp; | |
184 | }; | |
e0c6ed95 | 185 | |
19d63e5d | 186 | typedef struct z8k_op { |
f590b86e CG |
187 | /* CLASS_REG_xxx. */ |
188 | int regsize; | |
e0c6ed95 AM |
189 | |
190 | /* 0 .. 15. */ | |
191 | unsigned int reg; | |
252b5132 RH |
192 | |
193 | int mode; | |
194 | ||
e0c6ed95 AM |
195 | /* Any other register associated with the mode. */ |
196 | unsigned int x_reg; | |
197 | ||
198 | /* Any expression. */ | |
199 | expressionS exp; | |
19d63e5d | 200 | } op_type; |
252b5132 RH |
201 | |
202 | static expressionS *da_operand; | |
203 | static expressionS *imm_operand; | |
204 | ||
464800ca CG |
205 | static int reg[16]; |
206 | static int the_cc; | |
207 | static int the_ctrl; | |
208 | static int the_flags; | |
209 | static int the_interrupt; | |
78a33af2 AM |
210 | |
211 | static char * | |
464800ca | 212 | whatreg (int *reg, char *src) |
252b5132 | 213 | { |
3882b010 | 214 | if (ISDIGIT (src[1])) |
252b5132 RH |
215 | { |
216 | *reg = (src[0] - '0') * 10 + src[1] - '0'; | |
217 | return src + 2; | |
218 | } | |
219 | else | |
220 | { | |
221 | *reg = (src[0] - '0'); | |
222 | return src + 1; | |
223 | } | |
224 | } | |
225 | ||
e0c6ed95 | 226 | /* Parse operands |
252b5132 | 227 | |
e0c6ed95 AM |
228 | rh0-rh7, rl0-rl7 |
229 | r0-r15 | |
230 | rr0-rr14 | |
231 | rq0--rq12 | |
232 | WREG r0,r1,r2,r3,r4,r5,r6,r7,fp,sp | |
233 | r0l,r0h,..r7l,r7h | |
234 | @WREG | |
235 | @WREG+ | |
236 | @-WREG | |
237 | #const | |
238 | */ | |
252b5132 | 239 | |
bc0d738a NC |
240 | /* Try to parse a reg name. Return a pointer to the first character |
241 | in SRC after the reg name. */ | |
242 | ||
78a33af2 | 243 | static char * |
464800ca | 244 | parse_reg (char *src, int *mode, unsigned int *reg) |
252b5132 RH |
245 | { |
246 | char *res = 0; | |
247 | char regno; | |
248 | ||
f69532ae CG |
249 | /* Check for stack pointer "sp" alias. */ |
250 | if ((src[0] == 's' || src[0] == 'S') | |
251 | && (src[1] == 'p' || src[1] == 'P') | |
252 | && (src[2] == 0 || src[2] == ',')) | |
252b5132 RH |
253 | { |
254 | if (segmented_mode) | |
e0c6ed95 AM |
255 | { |
256 | *mode = CLASS_REG_LONG; | |
257 | *reg = 14; | |
258 | } | |
252b5132 | 259 | else |
e0c6ed95 AM |
260 | { |
261 | *mode = CLASS_REG_WORD; | |
262 | *reg = 15; | |
263 | } | |
252b5132 RH |
264 | return src + 2; |
265 | } | |
f69532ae CG |
266 | |
267 | if (src[0] == 'r' || src[0] == 'R') | |
252b5132 | 268 | { |
f69532ae | 269 | if (src[1] == 'r' || src[1] == 'R') |
e0c6ed95 | 270 | { |
28bab82b NC |
271 | if (src[2] < '0' || src[2] > '9') |
272 | return res; /* Assume no register name but a label starting with 'rr'. */ | |
e0c6ed95 AM |
273 | *mode = CLASS_REG_LONG; |
274 | res = whatreg (reg, src + 2); | |
252b5132 RH |
275 | regno = *reg; |
276 | if (regno > 14) | |
f590b86e CG |
277 | as_bad (_("register rr%d out of range"), regno); |
278 | if (regno & 1) | |
279 | as_bad (_("register rr%d does not exist"), regno); | |
e0c6ed95 | 280 | } |
f69532ae | 281 | else if (src[1] == 'h' || src[1] == 'H') |
e0c6ed95 | 282 | { |
28bab82b NC |
283 | if (src[2] < '0' || src[2] > '9') |
284 | return res; /* Assume no register name but a label starting with 'rh'. */ | |
e0c6ed95 AM |
285 | *mode = CLASS_REG_BYTE; |
286 | res = whatreg (reg, src + 2); | |
252b5132 RH |
287 | regno = *reg; |
288 | if (regno > 7) | |
f590b86e | 289 | as_bad (_("register rh%d out of range"), regno); |
e0c6ed95 | 290 | } |
f69532ae | 291 | else if (src[1] == 'l' || src[1] == 'L') |
e0c6ed95 | 292 | { |
28bab82b NC |
293 | if (src[2] < '0' || src[2] > '9') |
294 | return res; /* Assume no register name but a label starting with 'rl'. */ | |
e0c6ed95 AM |
295 | *mode = CLASS_REG_BYTE; |
296 | res = whatreg (reg, src + 2); | |
252b5132 RH |
297 | regno = *reg; |
298 | if (regno > 7) | |
f590b86e | 299 | as_bad (_("register rl%d out of range"), regno); |
e0c6ed95 AM |
300 | *reg += 8; |
301 | } | |
f69532ae | 302 | else if (src[1] == 'q' || src[1] == 'Q') |
e0c6ed95 | 303 | { |
28bab82b NC |
304 | if (src[2] < '0' || src[2] > '9') |
305 | return res; /* Assume no register name but a label starting with 'rq'. */ | |
e0c6ed95 AM |
306 | *mode = CLASS_REG_QUAD; |
307 | res = whatreg (reg, src + 2); | |
252b5132 RH |
308 | regno = *reg; |
309 | if (regno > 12) | |
f590b86e CG |
310 | as_bad (_("register rq%d out of range"), regno); |
311 | if (regno & 3) | |
312 | as_bad (_("register rq%d does not exist"), regno); | |
e0c6ed95 | 313 | } |
252b5132 | 314 | else |
e0c6ed95 | 315 | { |
28bab82b NC |
316 | if (src[1] < '0' || src[1] > '9') |
317 | return res; /* Assume no register name but a label starting with 'r'. */ | |
e0c6ed95 AM |
318 | *mode = CLASS_REG_WORD; |
319 | res = whatreg (reg, src + 1); | |
252b5132 RH |
320 | regno = *reg; |
321 | if (regno > 15) | |
f590b86e | 322 | as_bad (_("register r%d out of range"), regno); |
e0c6ed95 | 323 | } |
252b5132 RH |
324 | } |
325 | return res; | |
252b5132 RH |
326 | } |
327 | ||
78a33af2 | 328 | static char * |
464800ca | 329 | parse_exp (char *s, expressionS *op) |
252b5132 RH |
330 | { |
331 | char *save = input_line_pointer; | |
332 | char *new; | |
333 | ||
334 | input_line_pointer = s; | |
335 | expression (op); | |
336 | if (op->X_op == O_absent) | |
337 | as_bad (_("missing operand")); | |
338 | new = input_line_pointer; | |
339 | input_line_pointer = save; | |
340 | return new; | |
341 | } | |
342 | ||
343 | /* The many forms of operand: | |
344 | ||
345 | <rb> | |
346 | <r> | |
347 | <rr> | |
348 | <rq> | |
349 | @r | |
350 | #exp | |
351 | exp | |
352 | exp(r) | |
353 | r(#exp) | |
354 | r(r) | |
252b5132 RH |
355 | */ |
356 | ||
e0c6ed95 | 357 | static char * |
464800ca | 358 | checkfor (char *ptr, char what) |
252b5132 RH |
359 | { |
360 | if (*ptr == what) | |
361 | ptr++; | |
362 | else | |
e0c6ed95 AM |
363 | as_bad (_("expected %c"), what); |
364 | ||
252b5132 RH |
365 | return ptr; |
366 | } | |
367 | ||
e0c6ed95 AM |
368 | /* Make sure the mode supplied is the size of a word. */ |
369 | ||
252b5132 | 370 | static void |
464800ca | 371 | regword (int mode, char *string) |
252b5132 RH |
372 | { |
373 | int ok; | |
374 | ||
375 | ok = CLASS_REG_WORD; | |
376 | if (ok != mode) | |
377 | { | |
378 | as_bad (_("register is wrong size for a word %s"), string); | |
379 | } | |
380 | } | |
381 | ||
e0c6ed95 AM |
382 | /* Make sure the mode supplied is the size of an address. */ |
383 | ||
252b5132 | 384 | static void |
464800ca | 385 | regaddr (int mode, char *string) |
252b5132 RH |
386 | { |
387 | int ok; | |
388 | ||
389 | ok = segmented_mode ? CLASS_REG_LONG : CLASS_REG_WORD; | |
390 | if (ok != mode) | |
391 | { | |
392 | as_bad (_("register is wrong size for address %s"), string); | |
393 | } | |
394 | } | |
395 | ||
19d63e5d | 396 | struct ctrl_names { |
e0c6ed95 AM |
397 | int value; |
398 | char *name; | |
252b5132 RH |
399 | }; |
400 | ||
464800ca | 401 | static struct ctrl_names ctrl_table[] = { |
879db8be NC |
402 | { 0x2, "fcw" }, |
403 | { 0x3, "refresh" }, | |
404 | { 0x4, "psapseg" }, | |
405 | { 0x5, "psapoff" }, | |
406 | { 0x5, "psap" }, | |
407 | { 0x6, "nspseg" }, | |
408 | { 0x7, "nspoff" }, | |
409 | { 0x7, "nsp" }, | |
410 | { 0 , 0 } | |
252b5132 | 411 | }; |
e0c6ed95 | 412 | |
252b5132 | 413 | static void |
464800ca | 414 | get_ctrl_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) |
252b5132 RH |
415 | { |
416 | char *src = *ptr; | |
f69532ae | 417 | int i, l; |
252b5132 RH |
418 | |
419 | while (*src == ' ') | |
420 | src++; | |
421 | ||
422 | mode->mode = CLASS_CTRL; | |
423 | for (i = 0; ctrl_table[i].name; i++) | |
424 | { | |
f69532ae CG |
425 | l = strlen (ctrl_table[i].name); |
426 | if (! strncasecmp (ctrl_table[i].name, src, l)) | |
427 | { | |
428 | the_ctrl = ctrl_table[i].value; | |
429 | if (*(src + l) && *(src + l) != ',') | |
430 | break; | |
431 | *ptr = src + l; /* Valid control name found: "consume" it. */ | |
432 | return; | |
433 | } | |
252b5132 RH |
434 | } |
435 | the_ctrl = 0; | |
252b5132 RH |
436 | } |
437 | ||
19d63e5d | 438 | struct flag_names { |
252b5132 RH |
439 | int value; |
440 | char *name; | |
252b5132 RH |
441 | }; |
442 | ||
464800ca | 443 | static struct flag_names flag_table[] = { |
879db8be NC |
444 | { 0x1, "p" }, |
445 | { 0x1, "v" }, | |
446 | { 0x2, "s" }, | |
447 | { 0x4, "z" }, | |
448 | { 0x8, "c" }, | |
449 | { 0x0, "+" }, | |
450 | { 0, 0 } | |
252b5132 RH |
451 | }; |
452 | ||
453 | static void | |
464800ca | 454 | get_flags_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) |
252b5132 RH |
455 | { |
456 | char *src = *ptr; | |
252b5132 RH |
457 | int i; |
458 | int j; | |
459 | ||
460 | while (*src == ' ') | |
461 | src++; | |
462 | ||
463 | mode->mode = CLASS_FLAGS; | |
464 | the_flags = 0; | |
465 | for (j = 0; j <= 9; j++) | |
466 | { | |
e0c6ed95 | 467 | if (!src[j]) |
252b5132 | 468 | goto done; |
e0c6ed95 AM |
469 | for (i = 0; flag_table[i].name; i++) |
470 | { | |
471 | if (flag_table[i].name[0] == src[j]) | |
472 | { | |
473 | the_flags = the_flags | flag_table[i].value; | |
474 | goto match; | |
475 | } | |
476 | } | |
252b5132 RH |
477 | goto done; |
478 | match: | |
e0c6ed95 | 479 | ; |
252b5132 | 480 | } |
e0c6ed95 | 481 | done: |
252b5132 | 482 | *ptr = src + j; |
252b5132 RH |
483 | } |
484 | ||
19d63e5d | 485 | struct interrupt_names { |
252b5132 RH |
486 | int value; |
487 | char *name; | |
252b5132 RH |
488 | }; |
489 | ||
464800ca | 490 | static struct interrupt_names intr_table[] = { |
879db8be NC |
491 | { 0x1, "nvi" }, |
492 | { 0x2, "vi" }, | |
493 | { 0x3, "both" }, | |
494 | { 0x3, "all" }, | |
495 | { 0, 0 } | |
252b5132 RH |
496 | }; |
497 | ||
498 | static void | |
464800ca | 499 | get_interrupt_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) |
252b5132 RH |
500 | { |
501 | char *src = *ptr; | |
252b5132 RH |
502 | int i; |
503 | ||
504 | while (*src == ' ') | |
505 | src++; | |
506 | ||
507 | mode->mode = CLASS_IMM; | |
508 | for (i = 0; intr_table[i].name; i++) | |
509 | { | |
510 | int j; | |
511 | ||
512 | for (j = 0; intr_table[i].name[j]; j++) | |
e0c6ed95 AM |
513 | { |
514 | if (intr_table[i].name[j] != src[j]) | |
515 | goto fail; | |
516 | } | |
252b5132 RH |
517 | the_interrupt = intr_table[i].value; |
518 | *ptr = src + j; | |
519 | return; | |
e0c6ed95 AM |
520 | fail: |
521 | ; | |
252b5132 | 522 | } |
7f31df7c | 523 | /* No interrupt type specified, opcode won't do anything. */ |
f590b86e | 524 | as_warn (_("opcode has no effect")); |
252b5132 | 525 | the_interrupt = 0x0; |
252b5132 RH |
526 | } |
527 | ||
19d63e5d | 528 | struct cc_names { |
252b5132 RH |
529 | int value; |
530 | char *name; | |
252b5132 RH |
531 | }; |
532 | ||
464800ca | 533 | static struct cc_names table[] = { |
879db8be NC |
534 | { 0x0, "f" }, |
535 | { 0x1, "lt" }, | |
536 | { 0x2, "le" }, | |
537 | { 0x3, "ule" }, | |
d5bf5799 | 538 | { 0x4, "ov/pe" }, |
879db8be | 539 | { 0x4, "ov" }, |
d5bf5799 | 540 | { 0x4, "pe/ov" }, |
879db8be NC |
541 | { 0x4, "pe" }, |
542 | { 0x5, "mi" }, | |
543 | { 0x6, "eq" }, | |
544 | { 0x6, "z" }, | |
d5bf5799 | 545 | { 0x7, "c/ult" }, |
879db8be | 546 | { 0x7, "c" }, |
d5bf5799 | 547 | { 0x7, "ult/c" }, |
879db8be NC |
548 | { 0x7, "ult" }, |
549 | { 0x8, "t" }, | |
550 | { 0x9, "ge" }, | |
551 | { 0xa, "gt" }, | |
552 | { 0xb, "ugt" }, | |
d5bf5799 | 553 | { 0xc, "nov/po" }, |
879db8be | 554 | { 0xc, "nov" }, |
d5bf5799 | 555 | { 0xc, "po/nov" }, |
879db8be NC |
556 | { 0xc, "po" }, |
557 | { 0xd, "pl" }, | |
558 | { 0xe, "ne" }, | |
559 | { 0xe, "nz" }, | |
d5bf5799 | 560 | { 0xf, "nc/uge" }, |
879db8be | 561 | { 0xf, "nc" }, |
d5bf5799 | 562 | { 0xf, "uge/nc" }, |
879db8be NC |
563 | { 0xf, "uge" }, |
564 | { 0 , 0 } | |
252b5132 RH |
565 | }; |
566 | ||
567 | static void | |
464800ca | 568 | get_cc_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) |
252b5132 RH |
569 | { |
570 | char *src = *ptr; | |
d5bf5799 | 571 | int i, l; |
252b5132 RH |
572 | |
573 | while (*src == ' ') | |
574 | src++; | |
575 | ||
576 | mode->mode = CLASS_CC; | |
577 | for (i = 0; table[i].name; i++) | |
578 | { | |
d5bf5799 CG |
579 | l = strlen (table[i].name); |
580 | if (! strncasecmp (table[i].name, src, l)) | |
581 | { | |
582 | the_cc = table[i].value; | |
583 | if (*(src + l) && *(src + l) != ',') | |
584 | break; | |
585 | *ptr = src + l; /* Valid cc found: "consume" it. */ | |
586 | return; | |
587 | } | |
252b5132 | 588 | } |
d5bf5799 | 589 | the_cc = 0x8; /* Not recognizing the cc defaults to t. (Assuming no cc present.) */ |
252b5132 RH |
590 | } |
591 | ||
592 | static void | |
464800ca | 593 | get_operand (char **ptr, struct z8k_op *mode, unsigned int dst ATTRIBUTE_UNUSED) |
252b5132 RH |
594 | { |
595 | char *src = *ptr; | |
596 | char *end; | |
252b5132 RH |
597 | |
598 | mode->mode = 0; | |
599 | ||
600 | while (*src == ' ') | |
601 | src++; | |
602 | if (*src == '#') | |
603 | { | |
604 | mode->mode = CLASS_IMM; | |
605 | imm_operand = &(mode->exp); | |
606 | src = parse_exp (src + 1, &(mode->exp)); | |
607 | } | |
608 | else if (*src == '@') | |
609 | { | |
252b5132 | 610 | mode->mode = CLASS_IR; |
f590b86e | 611 | src = parse_reg (src + 1, &mode->regsize, &mode->reg); |
252b5132 RH |
612 | } |
613 | else | |
614 | { | |
615 | int regn; | |
616 | ||
617 | end = parse_reg (src, &mode->mode, ®n); | |
618 | ||
619 | if (end) | |
620 | { | |
621 | int nw, nr; | |
622 | ||
623 | src = end; | |
624 | if (*src == '(') | |
625 | { | |
626 | src++; | |
627 | end = parse_reg (src, &nw, &nr); | |
628 | if (end) | |
629 | { | |
e0c6ed95 | 630 | /* Got Ra(Rb). */ |
252b5132 RH |
631 | src = end; |
632 | ||
633 | if (*src != ')') | |
e0c6ed95 | 634 | as_bad (_("Missing ) in ra(rb)")); |
252b5132 | 635 | else |
e0c6ed95 | 636 | src++; |
252b5132 RH |
637 | |
638 | regaddr (mode->mode, "ra(rb) ra"); | |
e0c6ed95 AM |
639 | #if 0 |
640 | regword (mode->mode, "ra(rb) rb"); | |
641 | #endif | |
252b5132 RH |
642 | mode->mode = CLASS_BX; |
643 | mode->reg = regn; | |
644 | mode->x_reg = nr; | |
645 | reg[ARG_RX] = nr; | |
646 | } | |
647 | else | |
648 | { | |
e0c6ed95 | 649 | /* Got Ra(disp). */ |
252b5132 RH |
650 | if (*src == '#') |
651 | src++; | |
652 | src = parse_exp (src, &(mode->exp)); | |
653 | src = checkfor (src, ')'); | |
654 | mode->mode = CLASS_BA; | |
655 | mode->reg = regn; | |
656 | mode->x_reg = 0; | |
657 | imm_operand = &(mode->exp); | |
658 | } | |
659 | } | |
660 | else | |
661 | { | |
662 | mode->reg = regn; | |
663 | mode->x_reg = 0; | |
664 | } | |
665 | } | |
666 | else | |
667 | { | |
e0c6ed95 | 668 | /* No initial reg. */ |
252b5132 RH |
669 | src = parse_exp (src, &(mode->exp)); |
670 | if (*src == '(') | |
671 | { | |
672 | src++; | |
673 | end = parse_reg (src, &(mode->mode), ®n); | |
674 | regword (mode->mode, "addr(Ra) ra"); | |
675 | mode->mode = CLASS_X; | |
676 | mode->reg = regn; | |
677 | mode->x_reg = 0; | |
678 | da_operand = &(mode->exp); | |
679 | src = checkfor (end, ')'); | |
680 | } | |
681 | else | |
682 | { | |
e0c6ed95 | 683 | /* Just an address. */ |
252b5132 RH |
684 | mode->mode = CLASS_DA; |
685 | mode->reg = 0; | |
686 | mode->x_reg = 0; | |
687 | da_operand = &(mode->exp); | |
688 | } | |
689 | } | |
690 | } | |
691 | *ptr = src; | |
692 | } | |
693 | ||
e0c6ed95 | 694 | static char * |
464800ca | 695 | get_operands (const opcode_entry_type *opcode, char *op_end, op_type *operand) |
252b5132 RH |
696 | { |
697 | char *ptr = op_end; | |
e0c6ed95 AM |
698 | char *savptr; |
699 | ||
252b5132 RH |
700 | switch (opcode->noperands) |
701 | { | |
702 | case 0: | |
703 | operand[0].mode = 0; | |
704 | operand[1].mode = 0; | |
d5bf5799 CG |
705 | while (*ptr == ' ') |
706 | ptr++; | |
252b5132 RH |
707 | break; |
708 | ||
709 | case 1: | |
252b5132 | 710 | if (opcode->arg_info[0] == CLASS_CC) |
d5bf5799 CG |
711 | { |
712 | get_cc_operand (&ptr, operand + 0, 0); | |
713 | while (*ptr == ' ') | |
714 | ptr++; | |
715 | if (*ptr && ! is_end_of_line[(unsigned char) *ptr]) | |
716 | { | |
717 | as_bad (_("invalid condition code '%s'"), ptr); | |
718 | while (*ptr && ! is_end_of_line[(unsigned char) *ptr]) | |
719 | ptr++; /* Consume rest of line. */ | |
720 | } | |
721 | } | |
252b5132 | 722 | else if (opcode->arg_info[0] == CLASS_FLAGS) |
14899840 | 723 | get_flags_operand (&ptr, operand + 0, 0); |
e0c6ed95 | 724 | else if (opcode->arg_info[0] == (CLASS_IMM + (ARG_IMM2))) |
14899840 | 725 | get_interrupt_operand (&ptr, operand + 0, 0); |
252b5132 | 726 | else |
14899840 NC |
727 | get_operand (&ptr, operand + 0, 0); |
728 | ||
252b5132 RH |
729 | operand[1].mode = 0; |
730 | break; | |
731 | ||
732 | case 2: | |
252b5132 RH |
733 | savptr = ptr; |
734 | if (opcode->arg_info[0] == CLASS_CC) | |
d5bf5799 CG |
735 | { |
736 | get_cc_operand (&ptr, operand + 0, 0); | |
737 | while (*ptr == ' ') | |
738 | ptr++; | |
739 | if (*ptr != ',' && strchr (ptr + 1, ',')) | |
740 | { | |
741 | savptr = ptr; | |
742 | while (*ptr != ',') | |
743 | ptr++; | |
744 | *ptr = 0; | |
745 | ptr++; | |
746 | as_bad (_("invalid condition code '%s'"), savptr); | |
747 | } | |
748 | } | |
252b5132 | 749 | else if (opcode->arg_info[0] == CLASS_CTRL) |
e0c6ed95 AM |
750 | { |
751 | get_ctrl_operand (&ptr, operand + 0, 0); | |
14899840 | 752 | |
e0c6ed95 AM |
753 | if (the_ctrl == 0) |
754 | { | |
755 | ptr = savptr; | |
756 | get_operand (&ptr, operand + 0, 0); | |
14899840 | 757 | |
e0c6ed95 | 758 | if (ptr == 0) |
879db8be | 759 | return NULL; |
e0c6ed95 AM |
760 | if (*ptr == ',') |
761 | ptr++; | |
762 | get_ctrl_operand (&ptr, operand + 1, 1); | |
763 | return ptr; | |
764 | } | |
765 | } | |
252b5132 | 766 | else |
14899840 NC |
767 | get_operand (&ptr, operand + 0, 0); |
768 | ||
252b5132 | 769 | if (ptr == 0) |
879db8be | 770 | return NULL; |
252b5132 | 771 | if (*ptr == ',') |
e0c6ed95 | 772 | ptr++; |
252b5132 RH |
773 | get_operand (&ptr, operand + 1, 1); |
774 | break; | |
775 | ||
776 | case 3: | |
252b5132 RH |
777 | get_operand (&ptr, operand + 0, 0); |
778 | if (*ptr == ',') | |
779 | ptr++; | |
780 | get_operand (&ptr, operand + 1, 1); | |
781 | if (*ptr == ',') | |
782 | ptr++; | |
783 | get_operand (&ptr, operand + 2, 2); | |
784 | break; | |
785 | ||
786 | case 4: | |
252b5132 RH |
787 | get_operand (&ptr, operand + 0, 0); |
788 | if (*ptr == ',') | |
789 | ptr++; | |
790 | get_operand (&ptr, operand + 1, 1); | |
791 | if (*ptr == ',') | |
792 | ptr++; | |
793 | get_operand (&ptr, operand + 2, 2); | |
794 | if (*ptr == ',') | |
795 | ptr++; | |
796 | get_cc_operand (&ptr, operand + 3, 3); | |
797 | break; | |
e0c6ed95 | 798 | |
252b5132 RH |
799 | default: |
800 | abort (); | |
801 | } | |
802 | ||
803 | return ptr; | |
804 | } | |
805 | ||
806 | /* Passed a pointer to a list of opcodes which use different | |
e0c6ed95 AM |
807 | addressing modes. Return the opcode which matches the opcodes |
808 | provided. */ | |
252b5132 | 809 | |
e0c6ed95 | 810 | static opcode_entry_type * |
464800ca | 811 | get_specific (opcode_entry_type *opcode, op_type *operands) |
252b5132 RH |
812 | { |
813 | opcode_entry_type *this_try = opcode; | |
814 | int found = 0; | |
815 | unsigned int noperands = opcode->noperands; | |
816 | ||
879db8be | 817 | int this_index = opcode->idx; |
252b5132 RH |
818 | |
819 | while (this_index == opcode->idx && !found) | |
820 | { | |
821 | unsigned int i; | |
822 | ||
823 | this_try = opcode++; | |
824 | for (i = 0; i < noperands; i++) | |
825 | { | |
879db8be | 826 | unsigned int mode = operands[i].mode; |
252b5132 | 827 | |
f590b86e CG |
828 | if (((mode & CLASS_MASK) == CLASS_IR) && ((this_try->arg_info[i] & CLASS_MASK) == CLASS_IRO)) |
829 | { | |
830 | mode = operands[i].mode = (operands[i].mode & ~CLASS_MASK) | CLASS_IRO; | |
831 | } | |
832 | ||
252b5132 RH |
833 | if ((mode & CLASS_MASK) != (this_try->arg_info[i] & CLASS_MASK)) |
834 | { | |
c03099e6 | 835 | /* It could be a pc rel operand, if this is a da mode |
e0c6ed95 | 836 | and we like disps, then insert it. */ |
252b5132 RH |
837 | |
838 | if (mode == CLASS_DA && this_try->arg_info[i] == CLASS_DISP) | |
839 | { | |
e0c6ed95 | 840 | /* This is the case. */ |
252b5132 RH |
841 | operands[i].mode = CLASS_DISP; |
842 | } | |
843 | else if (mode == CLASS_BA && this_try->arg_info[i]) | |
844 | { | |
e0c6ed95 AM |
845 | /* Can't think of a way to turn what we've been |
846 | given into something that's OK. */ | |
252b5132 RH |
847 | goto fail; |
848 | } | |
849 | else if (this_try->arg_info[i] & CLASS_PR) | |
850 | { | |
851 | if (mode == CLASS_REG_LONG && segmented_mode) | |
852 | { | |
e0c6ed95 | 853 | /* OK. */ |
252b5132 RH |
854 | } |
855 | else if (mode == CLASS_REG_WORD && !segmented_mode) | |
856 | { | |
e0c6ed95 | 857 | /* OK. */ |
252b5132 RH |
858 | } |
859 | else | |
860 | goto fail; | |
861 | } | |
862 | else | |
863 | goto fail; | |
864 | } | |
865 | switch (mode & CLASS_MASK) | |
866 | { | |
867 | default: | |
868 | break; | |
f590b86e CG |
869 | case CLASS_IRO: |
870 | if (operands[i].regsize != CLASS_REG_WORD) | |
871 | as_bad (_("invalid indirect register size")); | |
872 | reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; | |
873 | break; | |
252b5132 | 874 | case CLASS_IR: |
f590b86e CG |
875 | if ((segmented_mode && operands[i].regsize != CLASS_REG_LONG) |
876 | || (!segmented_mode && operands[i].regsize != CLASS_REG_WORD)) | |
877 | as_bad (_("invalid indirect register size")); | |
878 | reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; | |
879 | break; | |
880 | case CLASS_X: | |
252b5132 RH |
881 | case CLASS_BA: |
882 | case CLASS_BX: | |
883 | case CLASS_DISP: | |
884 | case CLASS_REG: | |
885 | case CLASS_REG_WORD: | |
886 | case CLASS_REG_BYTE: | |
887 | case CLASS_REG_QUAD: | |
888 | case CLASS_REG_LONG: | |
889 | case CLASS_REGN0: | |
890 | reg[this_try->arg_info[i] & ARG_MASK] = operands[i].reg; | |
891 | break; | |
892 | } | |
893 | } | |
894 | ||
895 | found = 1; | |
e0c6ed95 AM |
896 | fail: |
897 | ; | |
252b5132 RH |
898 | } |
899 | if (found) | |
900 | return this_try; | |
901 | else | |
902 | return 0; | |
903 | } | |
904 | ||
252b5132 RH |
905 | static char buffer[20]; |
906 | ||
907 | static void | |
464800ca | 908 | newfix (int ptr, int type, int size, expressionS *operand) |
252b5132 | 909 | { |
a72d6b4e CG |
910 | int is_pcrel = 0; |
911 | ||
464800ca CG |
912 | /* size is in nibbles. */ |
913 | ||
252b5132 RH |
914 | if (operand->X_add_symbol |
915 | || operand->X_op_symbol | |
916 | || operand->X_add_number) | |
917 | { | |
a72d6b4e CG |
918 | switch(type) |
919 | { | |
920 | case R_JR: | |
921 | case R_DISP7: | |
922 | case R_CALLR: | |
923 | is_pcrel = 1; | |
924 | } | |
252b5132 RH |
925 | fix_new_exp (frag_now, |
926 | ptr, | |
7f31df7c | 927 | size / 2, |
252b5132 | 928 | operand, |
a72d6b4e | 929 | is_pcrel, |
252b5132 RH |
930 | type); |
931 | } | |
932 | } | |
933 | ||
934 | static char * | |
464800ca | 935 | apply_fix (char *ptr, int type, expressionS *operand, int size) |
252b5132 | 936 | { |
7f31df7c | 937 | long n = operand->X_add_number; |
252b5132 | 938 | |
464800ca CG |
939 | /* size is in nibbles. */ |
940 | ||
7f31df7c | 941 | newfix ((ptr - buffer) / 2, type, size + 1, operand); |
252b5132 RH |
942 | switch (size) |
943 | { | |
879db8be | 944 | case 8: /* 8 nibbles == 32 bits. */ |
252b5132 RH |
945 | *ptr++ = n >> 28; |
946 | *ptr++ = n >> 24; | |
947 | *ptr++ = n >> 20; | |
948 | *ptr++ = n >> 16; | |
879db8be | 949 | case 4: /* 4 nibbles == 16 bits. */ |
252b5132 RH |
950 | *ptr++ = n >> 12; |
951 | *ptr++ = n >> 8; | |
952 | case 2: | |
953 | *ptr++ = n >> 4; | |
954 | case 1: | |
955 | *ptr++ = n >> 0; | |
956 | break; | |
957 | } | |
252b5132 | 958 | return ptr; |
252b5132 RH |
959 | } |
960 | ||
e0c6ed95 AM |
961 | /* Now we know what sort of opcodes it is. Let's build the bytes. */ |
962 | ||
252b5132 | 963 | #define INSERT(x,y) *x++ = y>>24; *x++ = y>> 16; *x++=y>>8; *x++ =y; |
19d63e5d | 964 | |
252b5132 | 965 | static void |
464800ca | 966 | build_bytes (opcode_entry_type *this_try, struct z8k_op *operand ATTRIBUTE_UNUSED) |
252b5132 | 967 | { |
252b5132 | 968 | char *output_ptr = buffer; |
252b5132 | 969 | int c; |
252b5132 RH |
970 | int nibble; |
971 | unsigned int *class_ptr; | |
972 | ||
973 | frag_wane (frag_now); | |
974 | frag_new (0); | |
975 | ||
25d3fb58 | 976 | memset (buffer, 0, sizeof (buffer)); |
252b5132 | 977 | class_ptr = this_try->byte_info; |
252b5132 | 978 | |
879db8be | 979 | for (nibble = 0; (c = *class_ptr++); nibble++) |
252b5132 RH |
980 | { |
981 | ||
982 | switch (c & CLASS_MASK) | |
983 | { | |
984 | default: | |
252b5132 | 985 | abort (); |
e0c6ed95 | 986 | |
252b5132 | 987 | case CLASS_ADDRESS: |
e0c6ed95 | 988 | /* Direct address, we don't cope with the SS mode right now. */ |
252b5132 RH |
989 | if (segmented_mode) |
990 | { | |
879db8be | 991 | /* da_operand->X_add_number |= 0x80000000; -- Now set at relocation time. */ |
252b5132 RH |
992 | output_ptr = apply_fix (output_ptr, R_IMM32, da_operand, 8); |
993 | } | |
994 | else | |
995 | { | |
996 | output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4); | |
997 | } | |
998 | da_operand = 0; | |
999 | break; | |
1000 | case CLASS_DISP8: | |
e0c6ed95 | 1001 | /* pc rel 8 bit */ |
252b5132 RH |
1002 | output_ptr = apply_fix (output_ptr, R_JR, da_operand, 2); |
1003 | da_operand = 0; | |
1004 | break; | |
1005 | ||
1006 | case CLASS_0DISP7: | |
e0c6ed95 | 1007 | /* pc rel 7 bit */ |
252b5132 RH |
1008 | *output_ptr = 0; |
1009 | output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2); | |
1010 | da_operand = 0; | |
1011 | break; | |
1012 | ||
1013 | case CLASS_1DISP7: | |
e0c6ed95 | 1014 | /* pc rel 7 bit */ |
252b5132 RH |
1015 | *output_ptr = 0x80; |
1016 | output_ptr = apply_fix (output_ptr, R_DISP7, da_operand, 2); | |
e0c6ed95 | 1017 | output_ptr[-2] = 0x8; |
252b5132 RH |
1018 | da_operand = 0; |
1019 | break; | |
1020 | ||
1021 | case CLASS_BIT_1OR2: | |
1022 | *output_ptr = c & 0xf; | |
1023 | if (imm_operand) | |
1024 | { | |
1025 | if (imm_operand->X_add_number == 2) | |
e0c6ed95 | 1026 | *output_ptr |= 2; |
252b5132 | 1027 | else if (imm_operand->X_add_number != 1) |
e0c6ed95 | 1028 | as_bad (_("immediate must be 1 or 2")); |
252b5132 RH |
1029 | } |
1030 | else | |
e0c6ed95 | 1031 | as_bad (_("immediate 1 or 2 expected")); |
252b5132 RH |
1032 | output_ptr++; |
1033 | break; | |
1034 | case CLASS_CC: | |
1035 | *output_ptr++ = the_cc; | |
1036 | break; | |
e0c6ed95 AM |
1037 | case CLASS_0CCC: |
1038 | *output_ptr++ = the_ctrl; | |
1039 | break; | |
1040 | case CLASS_1CCC: | |
1041 | *output_ptr++ = the_ctrl | 0x8; | |
1042 | break; | |
1043 | case CLASS_00II: | |
1044 | *output_ptr++ = (~the_interrupt & 0x3); | |
1045 | break; | |
1046 | case CLASS_01II: | |
1047 | *output_ptr++ = (~the_interrupt & 0x3) | 0x4; | |
1048 | break; | |
1049 | case CLASS_FLAGS: | |
1050 | *output_ptr++ = the_flags; | |
1051 | break; | |
3c25c5f6 | 1052 | case CLASS_IGNORE: |
252b5132 RH |
1053 | case CLASS_BIT: |
1054 | *output_ptr++ = c & 0xf; | |
1055 | break; | |
1056 | case CLASS_REGN0: | |
1057 | if (reg[c & 0xf] == 0) | |
e0c6ed95 AM |
1058 | as_bad (_("can't use R0 here")); |
1059 | /* Fall through. */ | |
252b5132 RH |
1060 | case CLASS_REG: |
1061 | case CLASS_REG_BYTE: | |
1062 | case CLASS_REG_WORD: | |
1063 | case CLASS_REG_LONG: | |
1064 | case CLASS_REG_QUAD: | |
e0c6ed95 | 1065 | /* Insert bit mattern of right reg. */ |
252b5132 RH |
1066 | *output_ptr++ = reg[c & 0xf]; |
1067 | break; | |
1068 | case CLASS_DISP: | |
6840198f NC |
1069 | switch (c & ARG_MASK) |
1070 | { | |
1071 | case ARG_DISP12: | |
1072 | output_ptr = apply_fix (output_ptr, R_CALLR, da_operand, 4); | |
1073 | break; | |
1074 | case ARG_DISP16: | |
879db8be NC |
1075 | output_ptr = apply_fix (output_ptr, R_REL16, da_operand, 4); |
1076 | break; | |
1077 | default: | |
1078 | output_ptr = apply_fix (output_ptr, R_IMM16, da_operand, 4); | |
1079 | } | |
252b5132 RH |
1080 | da_operand = 0; |
1081 | break; | |
1082 | ||
1083 | case CLASS_IMM: | |
1084 | { | |
252b5132 RH |
1085 | switch (c & ARG_MASK) |
1086 | { | |
3c25c5f6 | 1087 | case ARG_NIM4: |
7f31df7c CG |
1088 | if (imm_operand->X_add_number > 15) |
1089 | { | |
1090 | as_bad (_("immediate value out of range")); | |
1091 | } | |
3c25c5f6 | 1092 | imm_operand->X_add_number = -imm_operand->X_add_number; |
252b5132 RH |
1093 | output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1); |
1094 | break; | |
7f31df7c | 1095 | /*case ARG_IMMNMINUS1: not used. */ |
252b5132 RH |
1096 | case ARG_IMM4M1: |
1097 | imm_operand->X_add_number--; | |
7f31df7c CG |
1098 | /* Drop through. */ |
1099 | case ARG_IMM4: | |
1100 | if (imm_operand->X_add_number > 15) | |
1101 | { | |
1102 | as_bad (_("immediate value out of range")); | |
1103 | } | |
252b5132 RH |
1104 | output_ptr = apply_fix (output_ptr, R_IMM4L, imm_operand, 1); |
1105 | break; | |
1106 | case ARG_NIM8: | |
1107 | imm_operand->X_add_number = -imm_operand->X_add_number; | |
7f31df7c | 1108 | /* Drop through. */ |
252b5132 RH |
1109 | case ARG_IMM8: |
1110 | output_ptr = apply_fix (output_ptr, R_IMM8, imm_operand, 2); | |
1111 | break; | |
1112 | case ARG_IMM16: | |
1113 | output_ptr = apply_fix (output_ptr, R_IMM16, imm_operand, 4); | |
1114 | break; | |
252b5132 RH |
1115 | case ARG_IMM32: |
1116 | output_ptr = apply_fix (output_ptr, R_IMM32, imm_operand, 8); | |
1117 | break; | |
252b5132 RH |
1118 | default: |
1119 | abort (); | |
1120 | } | |
1121 | } | |
1122 | } | |
1123 | } | |
1124 | ||
e0c6ed95 | 1125 | /* Copy from the nibble buffer into the frag. */ |
252b5132 RH |
1126 | { |
1127 | int length = (output_ptr - buffer) / 2; | |
1128 | char *src = buffer; | |
1129 | char *fragp = frag_more (length); | |
1130 | ||
1131 | while (src < output_ptr) | |
1132 | { | |
1133 | *fragp = (src[0] << 4) | src[1]; | |
1134 | src += 2; | |
1135 | fragp++; | |
1136 | } | |
252b5132 | 1137 | } |
252b5132 RH |
1138 | } |
1139 | ||
1140 | /* This is the guts of the machine-dependent assembler. STR points to a | |
1994a7c7 NC |
1141 | machine dependent instruction. This function is supposed to emit |
1142 | the frags/bytes it assembles to. */ | |
252b5132 RH |
1143 | |
1144 | void | |
464800ca | 1145 | md_assemble (char *str) |
252b5132 | 1146 | { |
879db8be | 1147 | char c; |
252b5132 RH |
1148 | char *op_start; |
1149 | char *op_end; | |
252b5132 RH |
1150 | struct z8k_op operand[3]; |
1151 | opcode_entry_type *opcode; | |
252b5132 | 1152 | |
e0c6ed95 | 1153 | /* Drop leading whitespace. */ |
252b5132 RH |
1154 | while (*str == ' ') |
1155 | str++; | |
1156 | ||
e0c6ed95 | 1157 | /* Find the op code end. */ |
252b5132 | 1158 | for (op_start = op_end = str; |
d5bf5799 | 1159 | *op_end != 0 && *op_end != ' ' && ! is_end_of_line[(unsigned char) *op_end]; |
252b5132 | 1160 | op_end++) |
e0c6ed95 | 1161 | ; |
252b5132 RH |
1162 | |
1163 | if (op_end == op_start) | |
1164 | { | |
1165 | as_bad (_("can't find opcode ")); | |
1166 | } | |
1167 | c = *op_end; | |
1168 | ||
d5bf5799 | 1169 | *op_end = 0; /* Zero-terminate op code string for hash_find() call. */ |
252b5132 | 1170 | |
e0c6ed95 | 1171 | opcode = (opcode_entry_type *) hash_find (opcode_hash_control, op_start); |
252b5132 RH |
1172 | |
1173 | if (opcode == NULL) | |
1174 | { | |
1175 | as_bad (_("unknown opcode")); | |
1176 | return; | |
1177 | } | |
1178 | ||
d5bf5799 CG |
1179 | *op_end = c; /* Restore original string. */ |
1180 | ||
252b5132 RH |
1181 | if (opcode->opcode == 250) |
1182 | { | |
252b5132 RH |
1183 | pseudo_typeS *p; |
1184 | char oc; | |
252b5132 | 1185 | char *old = input_line_pointer; |
252b5132 | 1186 | |
3c25c5f6 NC |
1187 | /* Was really a pseudo op. */ |
1188 | ||
252b5132 RH |
1189 | input_line_pointer = op_end; |
1190 | ||
1191 | oc = *old; | |
1192 | *old = '\n'; | |
1193 | while (*input_line_pointer == ' ') | |
1194 | input_line_pointer++; | |
1195 | p = (pseudo_typeS *) (opcode->func); | |
1196 | ||
1197 | (p->poc_handler) (p->poc_val); | |
1198 | input_line_pointer = old; | |
1199 | *old = oc; | |
1200 | } | |
1201 | else | |
1202 | { | |
3c25c5f6 NC |
1203 | char *new_input_line_pointer; |
1204 | ||
1205 | new_input_line_pointer = get_operands (opcode, op_end, operand); | |
1206 | if (new_input_line_pointer) | |
1207 | input_line_pointer = new_input_line_pointer; | |
252b5132 RH |
1208 | |
1209 | opcode = get_specific (opcode, operand); | |
1210 | ||
1211 | if (opcode == 0) | |
1212 | { | |
e0c6ed95 | 1213 | /* Couldn't find an opcode which matched the operands. */ |
252b5132 RH |
1214 | char *where = frag_more (2); |
1215 | ||
1216 | where[0] = 0x0; | |
1217 | where[1] = 0x0; | |
1218 | ||
1219 | as_bad (_("Can't find opcode to match operands")); | |
1220 | return; | |
1221 | } | |
1222 | ||
1223 | build_bytes (opcode, operand); | |
1224 | } | |
1225 | } | |
1226 | ||
1227 | void | |
464800ca | 1228 | tc_crawl_symbol_chain (object_headers *headers ATTRIBUTE_UNUSED) |
252b5132 RH |
1229 | { |
1230 | printf (_("call to tc_crawl_symbol_chain \n")); | |
1231 | } | |
1232 | ||
7f31df7c CG |
1233 | /* We have no need to default values of symbols. */ |
1234 | ||
252b5132 | 1235 | symbolS * |
464800ca | 1236 | md_undefined_symbol (char *name ATTRIBUTE_UNUSED) |
252b5132 RH |
1237 | { |
1238 | return 0; | |
1239 | } | |
1240 | ||
1241 | void | |
464800ca | 1242 | tc_headers_hook (object_headers *headers ATTRIBUTE_UNUSED) |
252b5132 RH |
1243 | { |
1244 | printf (_("call to tc_headers_hook \n")); | |
1245 | } | |
1246 | ||
e0c6ed95 AM |
1247 | /* Various routines to kill one day. */ |
1248 | /* Equal to MAX_PRECISION in atof-ieee.c. */ | |
252b5132 RH |
1249 | #define MAX_LITTLENUMS 6 |
1250 | ||
e0c6ed95 AM |
1251 | /* Turn a string in input_line_pointer into a floating point constant |
1252 | of type TYPE, and store the appropriate bytes in *LITP. The number | |
1253 | of LITTLENUMS emitted is stored in *SIZEP. An error message is | |
1254 | returned, or NULL on OK. */ | |
1255 | ||
252b5132 | 1256 | char * |
464800ca | 1257 | md_atof (int type, char *litP, int *sizeP) |
252b5132 RH |
1258 | { |
1259 | int prec; | |
1260 | LITTLENUM_TYPE words[MAX_LITTLENUMS]; | |
1261 | LITTLENUM_TYPE *wordP; | |
1262 | char *t; | |
252b5132 RH |
1263 | |
1264 | switch (type) | |
1265 | { | |
1266 | case 'f': | |
1267 | case 'F': | |
1268 | case 's': | |
1269 | case 'S': | |
1270 | prec = 2; | |
1271 | break; | |
1272 | ||
1273 | case 'd': | |
1274 | case 'D': | |
1275 | case 'r': | |
1276 | case 'R': | |
1277 | prec = 4; | |
1278 | break; | |
1279 | ||
1280 | case 'x': | |
1281 | case 'X': | |
1282 | prec = 6; | |
1283 | break; | |
1284 | ||
1285 | case 'p': | |
1286 | case 'P': | |
1287 | prec = 6; | |
1288 | break; | |
1289 | ||
1290 | default: | |
1291 | *sizeP = 0; | |
1292 | return _("Bad call to MD_ATOF()"); | |
1293 | } | |
1294 | t = atof_ieee (input_line_pointer, type, words); | |
1295 | if (t) | |
1296 | input_line_pointer = t; | |
1297 | ||
1298 | *sizeP = prec * sizeof (LITTLENUM_TYPE); | |
1299 | for (wordP = words; prec--;) | |
1300 | { | |
1301 | md_number_to_chars (litP, (long) (*wordP++), sizeof (LITTLENUM_TYPE)); | |
1302 | litP += sizeof (LITTLENUM_TYPE); | |
1303 | } | |
1304 | return 0; | |
1305 | } | |
1306 | \f | |
5a38dc70 | 1307 | const char *md_shortopts = "z:"; |
e0c6ed95 | 1308 | |
3c25c5f6 NC |
1309 | struct option md_longopts[] = |
1310 | { | |
7f31df7c CG |
1311 | #define OPTION_RELAX (OPTION_MD_BASE) |
1312 | {"linkrelax", no_argument, NULL, OPTION_RELAX}, | |
3c25c5f6 NC |
1313 | {NULL, no_argument, NULL, 0} |
1314 | }; | |
e0c6ed95 AM |
1315 | |
1316 | size_t md_longopts_size = sizeof (md_longopts); | |
252b5132 RH |
1317 | |
1318 | int | |
464800ca | 1319 | md_parse_option (int c, char *arg) |
252b5132 RH |
1320 | { |
1321 | switch (c) | |
1322 | { | |
1323 | case 'z': | |
1324 | if (!strcmp (arg, "8001")) | |
7f31df7c | 1325 | s_segm (1); |
252b5132 | 1326 | else if (!strcmp (arg, "8002")) |
7f31df7c | 1327 | s_segm (0); |
252b5132 RH |
1328 | else |
1329 | { | |
1330 | as_bad (_("invalid architecture -z%s"), arg); | |
1331 | return 0; | |
1332 | } | |
7f31df7c CG |
1333 | z8k_target_from_cmdline = 1; |
1334 | break; | |
1335 | ||
1336 | case OPTION_RELAX: | |
1337 | linkrelax = 1; | |
252b5132 RH |
1338 | break; |
1339 | ||
1340 | default: | |
1341 | return 0; | |
1342 | } | |
1343 | ||
1344 | return 1; | |
1345 | } | |
1346 | ||
1347 | void | |
464800ca | 1348 | md_show_usage (FILE *stream) |
252b5132 | 1349 | { |
e0c6ed95 | 1350 | fprintf (stream, _("\ |
7f31df7c CG |
1351 | Z8K options:\n\ |
1352 | -z8001 generate segmented code\n\ | |
1353 | -z8002 generate unsegmented code\n\ | |
1354 | -linkrelax create linker relaxable code\n")); | |
252b5132 RH |
1355 | } |
1356 | \f | |
252b5132 | 1357 | void |
464800ca CG |
1358 | md_convert_frag (object_headers *headers ATTRIBUTE_UNUSED, |
1359 | segT seg ATTRIBUTE_UNUSED, | |
1360 | fragS *fragP ATTRIBUTE_UNUSED) | |
252b5132 | 1361 | { |
7f31df7c | 1362 | printf (_("call to md_convert_frag\n")); |
252b5132 RH |
1363 | abort (); |
1364 | } | |
1365 | ||
1366 | valueT | |
464800ca | 1367 | md_section_align (segT seg, valueT size) |
252b5132 | 1368 | { |
e0c6ed95 AM |
1369 | return ((size + (1 << section_alignment[(int) seg]) - 1) |
1370 | & (-1 << section_alignment[(int) seg])); | |
252b5132 RH |
1371 | } |
1372 | ||
a72d6b4e CG |
1373 | /* Attempt to simplify or eliminate a fixup. To indicate that a fixup |
1374 | has been eliminated, set fix->fx_done. If fix->fx_addsy is non-NULL, | |
1375 | we will have to generate a reloc entry. */ | |
252b5132 | 1376 | void |
464800ca | 1377 | md_apply_fix3 (fixS *fixP, valueT *valP, segT segment ATTRIBUTE_UNUSED) |
252b5132 | 1378 | { |
94f592af | 1379 | long val = * (long *) valP; |
252b5132 RH |
1380 | char *buf = fixP->fx_where + fixP->fx_frag->fr_literal; |
1381 | ||
1382 | switch (fixP->fx_r_type) | |
1383 | { | |
1384 | case R_IMM4L: | |
7f31df7c | 1385 | buf[0] = (buf[0] & 0xf0) | (val & 0xf); |
252b5132 RH |
1386 | break; |
1387 | ||
1388 | case R_JR: | |
a72d6b4e CG |
1389 | if (fixP->fx_addsy) |
1390 | { | |
1391 | fixP->fx_no_overflow = 1; | |
1392 | fixP->fx_done = 0; | |
1393 | } | |
1394 | else | |
1395 | { | |
7f31df7c CG |
1396 | if (val & 1) |
1397 | as_bad (_("cannot branch to odd address")); | |
1398 | val /= 2; | |
1399 | if (val > 127 || val < -128) | |
a72d6b4e | 1400 | as_warn (_("relative jump out of range")); |
252b5132 | 1401 | *buf++ = val; |
7f31df7c | 1402 | fixP->fx_no_overflow = 1; |
a72d6b4e CG |
1403 | fixP->fx_done = 1; |
1404 | } | |
252b5132 RH |
1405 | break; |
1406 | ||
1407 | case R_DISP7: | |
a72d6b4e CG |
1408 | if (fixP->fx_addsy) |
1409 | { | |
1410 | fixP->fx_no_overflow = 1; | |
1411 | fixP->fx_done = 0; | |
1412 | } | |
1413 | else | |
1414 | { | |
d5bf5799 CG |
1415 | if (val & 1) |
1416 | as_bad (_("cannot branch to odd address")); | |
1417 | val /= 2; | |
a72d6b4e | 1418 | if (val > 0 || val < -127) |
d5bf5799 | 1419 | as_bad (_("relative jump out of range")); |
a72d6b4e | 1420 | *buf = (*buf & 0x80) | (-val & 0x7f); |
d5bf5799 | 1421 | fixP->fx_no_overflow = 1; |
a72d6b4e CG |
1422 | fixP->fx_done = 1; |
1423 | } | |
7f31df7c | 1424 | break; |
252b5132 | 1425 | |
7f31df7c | 1426 | case R_CALLR: |
a72d6b4e CG |
1427 | if (fixP->fx_addsy) |
1428 | { | |
1429 | fixP->fx_no_overflow = 1; | |
1430 | fixP->fx_done = 0; | |
1431 | } | |
1432 | else | |
1433 | { | |
1434 | if (val & 1) | |
1435 | as_bad (_("cannot branch to odd address")); | |
1436 | if (val > 4096 || val < -4095) | |
d5bf5799 | 1437 | as_bad (_("relative call out of range")); |
a72d6b4e | 1438 | val = -val / 2; |
d5bf5799 CG |
1439 | *buf = (*buf & 0xf0) | ((val >> 8) & 0xf); |
1440 | buf++; | |
1441 | *buf++ = val & 0xff; | |
a72d6b4e CG |
1442 | fixP->fx_no_overflow = 1; |
1443 | fixP->fx_done = 1; | |
1444 | } | |
252b5132 RH |
1445 | break; |
1446 | ||
1447 | case R_IMM8: | |
7f31df7c | 1448 | *buf++ = val; |
252b5132 | 1449 | break; |
7f31df7c | 1450 | |
252b5132 RH |
1451 | case R_IMM16: |
1452 | *buf++ = (val >> 8); | |
1453 | *buf++ = val; | |
1454 | break; | |
7f31df7c | 1455 | |
252b5132 RH |
1456 | case R_IMM32: |
1457 | *buf++ = (val >> 24); | |
1458 | *buf++ = (val >> 16); | |
1459 | *buf++ = (val >> 8); | |
1460 | *buf++ = val; | |
1461 | break; | |
7f31df7c CG |
1462 | |
1463 | case R_REL16: | |
1464 | val = val - fixP->fx_frag->fr_address + fixP->fx_where - fixP->fx_size; | |
1465 | if (val > 32767 || val < -32768) | |
1466 | as_bad (_("relative address out of range")); | |
1467 | *buf++ = (val >> 8); | |
1468 | *buf++ = val; | |
1469 | fixP->fx_no_overflow = 1; | |
1470 | break; | |
1471 | ||
252b5132 RH |
1472 | #if 0 |
1473 | case R_DA | R_SEG: | |
1474 | *buf++ = (val >> 16); | |
1475 | *buf++ = 0x00; | |
1476 | *buf++ = (val >> 8); | |
1477 | *buf++ = val; | |
1478 | break; | |
1479 | #endif | |
1480 | ||
1481 | case 0: | |
1482 | md_number_to_chars (buf, val, fixP->fx_size); | |
1483 | break; | |
1484 | ||
1485 | default: | |
7f31df7c | 1486 | printf(_("md_apply_fix3: unknown r_type 0x%x\n"), fixP->fx_r_type); |
252b5132 | 1487 | abort (); |
252b5132 | 1488 | } |
94f592af NC |
1489 | |
1490 | if (fixP->fx_addsy == NULL && fixP->fx_pcrel == 0) | |
1491 | fixP->fx_done = 1; | |
252b5132 RH |
1492 | } |
1493 | ||
1494 | int | |
464800ca CG |
1495 | md_estimate_size_before_relax (fragS *fragP ATTRIBUTE_UNUSED, |
1496 | segT segment_type ATTRIBUTE_UNUSED) | |
252b5132 | 1497 | { |
7f31df7c | 1498 | printf (_("call to md_estimate_size_before_relax\n")); |
252b5132 RH |
1499 | abort (); |
1500 | } | |
1501 | ||
e0c6ed95 | 1502 | /* Put number into target byte order. */ |
252b5132 RH |
1503 | |
1504 | void | |
464800ca | 1505 | md_number_to_chars (char *ptr, valueT use, int nbytes) |
252b5132 RH |
1506 | { |
1507 | number_to_chars_bigendian (ptr, use, nbytes); | |
1508 | } | |
e0c6ed95 | 1509 | |
a72d6b4e CG |
1510 | /* On the Z8000, a PC-relative offset is relative to the address of the |
1511 | instruction plus its size. */ | |
252b5132 | 1512 | long |
464800ca | 1513 | md_pcrel_from (fixS *fixP) |
252b5132 | 1514 | { |
a72d6b4e | 1515 | return fixP->fx_size + fixP->fx_where + fixP->fx_frag->fr_address; |
252b5132 RH |
1516 | } |
1517 | ||
1518 | void | |
464800ca | 1519 | tc_coff_symbol_emit_hook (symbolS *s ATTRIBUTE_UNUSED) |
252b5132 RH |
1520 | { |
1521 | } | |
1522 | ||
1523 | void | |
464800ca | 1524 | tc_reloc_mangle (fixS *fix_ptr, struct internal_reloc *intr, bfd_vma base) |
252b5132 RH |
1525 | { |
1526 | symbolS *symbol_ptr; | |
1527 | ||
e0c6ed95 AM |
1528 | if (fix_ptr->fx_addsy |
1529 | && fix_ptr->fx_subsy) | |
252b5132 RH |
1530 | { |
1531 | symbolS *add = fix_ptr->fx_addsy; | |
1532 | symbolS *sub = fix_ptr->fx_subsy; | |
e0c6ed95 AM |
1533 | |
1534 | if (S_GET_SEGMENT (add) != S_GET_SEGMENT (sub)) | |
1535 | as_bad (_("Can't subtract symbols in different sections %s %s"), | |
1536 | S_GET_NAME (add), S_GET_NAME (sub)); | |
1537 | else | |
252b5132 | 1538 | { |
e0c6ed95 AM |
1539 | int diff = S_GET_VALUE (add) - S_GET_VALUE (sub); |
1540 | ||
1541 | fix_ptr->fx_addsy = 0; | |
1542 | fix_ptr->fx_subsy = 0; | |
1543 | fix_ptr->fx_offset += diff; | |
252b5132 | 1544 | } |
252b5132 RH |
1545 | } |
1546 | symbol_ptr = fix_ptr->fx_addsy; | |
1547 | ||
1548 | /* If this relocation is attached to a symbol then it's ok | |
e0c6ed95 | 1549 | to output it. */ |
252b5132 RH |
1550 | if (fix_ptr->fx_r_type == 0) |
1551 | { | |
e0c6ed95 | 1552 | /* cons likes to create reloc32's whatever the size of the reloc. */ |
252b5132 RH |
1553 | switch (fix_ptr->fx_size) |
1554 | { | |
1555 | case 2: | |
1556 | intr->r_type = R_IMM16; | |
1557 | break; | |
1558 | case 1: | |
1559 | intr->r_type = R_IMM8; | |
1560 | break; | |
1561 | case 4: | |
1562 | intr->r_type = R_IMM32; | |
1563 | break; | |
1564 | default: | |
1565 | abort (); | |
1566 | } | |
252b5132 RH |
1567 | } |
1568 | else | |
e0c6ed95 | 1569 | intr->r_type = fix_ptr->fx_r_type; |
252b5132 RH |
1570 | |
1571 | intr->r_vaddr = fix_ptr->fx_frag->fr_address + fix_ptr->fx_where + base; | |
1572 | intr->r_offset = fix_ptr->fx_offset; | |
1573 | ||
1574 | if (symbol_ptr) | |
1575 | intr->r_symndx = symbol_ptr->sy_number; | |
1576 | else | |
1577 | intr->r_symndx = -1; | |
1578 | } |