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Commit | Line | Data |
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c906108c | 1 | /* |
9f70f8ec | 2 | * Simulator for the Renesas (formerly Hitachi) H8/300 architecture. |
c906108c SS |
3 | * |
4 | * Written by Steve Chamberlain of Cygnus Support. sac@cygnus.com | |
5 | * | |
6 | * This file is part of H8/300 sim | |
7 | * | |
8 | * | |
9 | * THIS SOFTWARE IS NOT COPYRIGHTED | |
10 | * | |
11 | * Cygnus offers the following for use in the public domain. Cygnus makes no | |
12 | * warranty with regard to the software or its performance and the user | |
13 | * accepts the software "AS IS" with all faults. | |
14 | * | |
15 | * CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO THIS | |
16 | * SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY | |
17 | * AND FITNESS FOR A PARTICULAR PURPOSE. | |
18 | */ | |
19 | ||
c906108c SS |
20 | #include <signal.h> |
21 | #ifdef HAVE_TIME_H | |
22 | #include <time.h> | |
23 | #endif | |
24 | #ifdef HAVE_STDLIB_H | |
25 | #include <stdlib.h> | |
26 | #endif | |
27 | #ifdef HAVE_SYS_PARAM_H | |
28 | #include <sys/param.h> | |
29 | #endif | |
dc5c3759 | 30 | |
c906108c | 31 | #include "bfd.h" |
dc5c3759 | 32 | #include "sim-main.h" |
a64bfde3 | 33 | #include "gdb/sim-h8300.h" |
bf174226 V |
34 | #include "sys/stat.h" |
35 | #include "sys/types.h" | |
c906108c SS |
36 | |
37 | #ifndef SIGTRAP | |
38 | # define SIGTRAP 5 | |
39 | #endif | |
40 | ||
41 | int debug; | |
42 | ||
43 | host_callback *sim_callback; | |
44 | ||
45 | static SIM_OPEN_KIND sim_kind; | |
46 | static char *myname; | |
47 | ||
48 | /* FIXME: Needs to live in header file. | |
49 | This header should also include the things in remote-sim.h. | |
50 | One could move this to remote-sim.h but this function isn't needed | |
51 | by gdb. */ | |
dc5c3759 | 52 | static void set_simcache_size (SIM_DESC, int); |
c906108c | 53 | |
dc5c3759 | 54 | #define X(op, size) (op * 4 + size) |
c906108c | 55 | |
de9b1892 | 56 | #define SP (h8300hmode ? SL : SW) |
dc5c3759 | 57 | |
c906108c SS |
58 | #define h8_opcodes ops |
59 | #define DEFINE_TABLE | |
60 | #include "opcode/h8300.h" | |
61 | ||
dc5c3759 | 62 | /* CPU data object: */ |
c906108c | 63 | |
dc5c3759 MS |
64 | static int |
65 | sim_state_initialize (SIM_DESC sd, sim_cpu *cpu) | |
66 | { | |
67 | /* FIXME: not really necessary, since sim_cpu_alloc calls zalloc. */ | |
68 | ||
69 | memset (&cpu->regs, 0, sizeof(cpu->regs)); | |
70 | cpu->regs[SBR_REGNUM] = 0xFFFFFF00; | |
71 | cpu->pc = 0; | |
72 | cpu->delayed_branch = 0; | |
73 | cpu->memory = NULL; | |
74 | cpu->eightbit = NULL; | |
75 | cpu->mask = 0; | |
76 | ||
77 | /* Initialize local simulator state. */ | |
78 | sd->sim_cache = NULL; | |
79 | sd->sim_cache_size = 0; | |
80 | sd->cache_idx = NULL; | |
81 | sd->cache_top = 0; | |
82 | sd->memory_size = 0; | |
83 | sd->compiles = 0; | |
84 | #ifdef ADEBUG | |
85 | memset (&cpu->stats, 0, sizeof (cpu->stats)); | |
86 | #endif | |
87 | return 0; | |
88 | } | |
7a292a7a | 89 | |
dc5c3759 MS |
90 | static unsigned int |
91 | h8_get_pc (SIM_DESC sd) | |
92 | { | |
93 | return (STATE_CPU (sd, 0)) -> pc; | |
94 | } | |
7a292a7a | 95 | |
dc5c3759 MS |
96 | static void |
97 | h8_set_pc (SIM_DESC sd, unsigned int val) | |
98 | { | |
99 | (STATE_CPU (sd, 0)) -> pc = val; | |
100 | } | |
fc974602 | 101 | |
dc5c3759 MS |
102 | static unsigned int |
103 | h8_get_ccr (SIM_DESC sd) | |
104 | { | |
105 | return (STATE_CPU (sd, 0)) -> regs[CCR_REGNUM]; | |
106 | } | |
c906108c | 107 | |
dc5c3759 MS |
108 | static void |
109 | h8_set_ccr (SIM_DESC sd, unsigned int val) | |
110 | { | |
111 | (STATE_CPU (sd, 0)) -> regs[CCR_REGNUM] = val; | |
112 | } | |
c906108c | 113 | |
dc5c3759 MS |
114 | static unsigned int |
115 | h8_get_exr (SIM_DESC sd) | |
116 | { | |
117 | return (STATE_CPU (sd, 0)) -> regs[EXR_REGNUM]; | |
118 | } | |
c906108c | 119 | |
dc5c3759 MS |
120 | static void |
121 | h8_set_exr (SIM_DESC sd, unsigned int val) | |
122 | { | |
123 | (STATE_CPU (sd, 0)) -> regs[EXR_REGNUM] = val; | |
124 | } | |
c906108c | 125 | |
dc5c3759 MS |
126 | static int |
127 | h8_get_sbr (SIM_DESC sd) | |
128 | { | |
129 | return (STATE_CPU (sd, 0)) -> regs[SBR_REGNUM]; | |
130 | } | |
c906108c | 131 | |
dc5c3759 MS |
132 | static void |
133 | h8_set_sbr (SIM_DESC sd, int val) | |
134 | { | |
135 | (STATE_CPU (sd, 0)) -> regs[SBR_REGNUM] = val; | |
136 | } | |
c906108c | 137 | |
c906108c | 138 | static int |
dc5c3759 MS |
139 | h8_get_vbr (SIM_DESC sd) |
140 | { | |
141 | return (STATE_CPU (sd, 0)) -> regs[VBR_REGNUM]; | |
142 | } | |
143 | ||
144 | static void | |
145 | h8_set_vbr (SIM_DESC sd, int val) | |
c906108c | 146 | { |
dc5c3759 | 147 | (STATE_CPU (sd, 0)) -> regs[VBR_REGNUM] = val; |
c906108c SS |
148 | } |
149 | ||
150 | static int | |
dc5c3759 | 151 | h8_get_cache_top (SIM_DESC sd) |
c906108c | 152 | { |
dc5c3759 MS |
153 | return sd -> cache_top; |
154 | } | |
155 | ||
156 | static void | |
157 | h8_set_cache_top (SIM_DESC sd, int val) | |
158 | { | |
159 | sd -> cache_top = val; | |
c906108c SS |
160 | } |
161 | ||
c906108c | 162 | static int |
dc5c3759 | 163 | h8_get_mask (SIM_DESC sd) |
c906108c | 164 | { |
dc5c3759 | 165 | return (STATE_CPU (sd, 0)) -> mask; |
c906108c SS |
166 | } |
167 | ||
dc5c3759 MS |
168 | static void |
169 | h8_set_mask (SIM_DESC sd, int val) | |
c906108c | 170 | { |
dc5c3759 MS |
171 | (STATE_CPU (sd, 0)) -> mask = val; |
172 | } | |
173 | #if 0 | |
174 | static int | |
175 | h8_get_exception (SIM_DESC sd) | |
176 | { | |
177 | return (STATE_CPU (sd, 0)) -> exception; | |
178 | } | |
c906108c | 179 | |
dc5c3759 MS |
180 | static void |
181 | h8_set_exception (SIM_DESC sd, int val) | |
182 | { | |
183 | (STATE_CPU (sd, 0)) -> exception = val; | |
184 | } | |
0ef9643e | 185 | |
dc5c3759 MS |
186 | static enum h8300_sim_state |
187 | h8_get_state (SIM_DESC sd) | |
188 | { | |
189 | return sd -> state; | |
c906108c SS |
190 | } |
191 | ||
dc5c3759 MS |
192 | static void |
193 | h8_set_state (SIM_DESC sd, enum h8300_sim_state val) | |
d1360fb0 | 194 | { |
dc5c3759 MS |
195 | sd -> state = val; |
196 | } | |
197 | #endif | |
198 | static unsigned int | |
199 | h8_get_cycles (SIM_DESC sd) | |
200 | { | |
201 | return (STATE_CPU (sd, 0)) -> regs[CYCLE_REGNUM]; | |
202 | } | |
203 | ||
204 | static void | |
205 | h8_set_cycles (SIM_DESC sd, unsigned int val) | |
206 | { | |
207 | (STATE_CPU (sd, 0)) -> regs[CYCLE_REGNUM] = val; | |
d1360fb0 V |
208 | } |
209 | ||
c906108c | 210 | static unsigned int |
dc5c3759 | 211 | h8_get_insts (SIM_DESC sd) |
c906108c | 212 | { |
dc5c3759 MS |
213 | return (STATE_CPU (sd, 0)) -> regs[INST_REGNUM]; |
214 | } | |
0ef9643e | 215 | |
dc5c3759 MS |
216 | static void |
217 | h8_set_insts (SIM_DESC sd, unsigned int val) | |
218 | { | |
219 | (STATE_CPU (sd, 0)) -> regs[INST_REGNUM] = val; | |
220 | } | |
0ef9643e | 221 | |
dc5c3759 MS |
222 | static unsigned int |
223 | h8_get_ticks (SIM_DESC sd) | |
224 | { | |
225 | return (STATE_CPU (sd, 0)) -> regs[TICK_REGNUM]; | |
226 | } | |
c906108c | 227 | |
dc5c3759 MS |
228 | static void |
229 | h8_set_ticks (SIM_DESC sd, unsigned int val) | |
230 | { | |
231 | (STATE_CPU (sd, 0)) -> regs[TICK_REGNUM] = val; | |
232 | } | |
c906108c | 233 | |
dc5c3759 MS |
234 | static unsigned int |
235 | h8_get_mach (SIM_DESC sd) | |
236 | { | |
237 | return (STATE_CPU (sd, 0)) -> regs[MACH_REGNUM]; | |
238 | } | |
c906108c | 239 | |
dc5c3759 MS |
240 | static void |
241 | h8_set_mach (SIM_DESC sd, unsigned int val) | |
242 | { | |
243 | (STATE_CPU (sd, 0)) -> regs[MACH_REGNUM] = val; | |
244 | } | |
0ef9643e | 245 | |
dc5c3759 MS |
246 | static unsigned int |
247 | h8_get_macl (SIM_DESC sd) | |
248 | { | |
249 | return (STATE_CPU (sd, 0)) -> regs[MACL_REGNUM]; | |
250 | } | |
0ef9643e | 251 | |
dc5c3759 MS |
252 | static void |
253 | h8_set_macl (SIM_DESC sd, unsigned int val) | |
254 | { | |
255 | (STATE_CPU (sd, 0)) -> regs[MACL_REGNUM] = val; | |
256 | } | |
0ef9643e | 257 | |
dc5c3759 MS |
258 | static int |
259 | h8_get_compiles (SIM_DESC sd) | |
260 | { | |
261 | return sd -> compiles; | |
262 | } | |
0ef9643e | 263 | |
dc5c3759 MS |
264 | static void |
265 | h8_increment_compiles (SIM_DESC sd) | |
266 | { | |
267 | sd -> compiles ++; | |
268 | } | |
0ef9643e | 269 | |
dc5c3759 MS |
270 | static unsigned int * |
271 | h8_get_reg_buf (SIM_DESC sd) | |
272 | { | |
273 | return &(((STATE_CPU (sd, 0)) -> regs)[0]); | |
274 | } | |
0ef9643e | 275 | |
dc5c3759 MS |
276 | static unsigned int |
277 | h8_get_reg (SIM_DESC sd, int regnum) | |
278 | { | |
279 | return (STATE_CPU (sd, 0)) -> regs[regnum]; | |
280 | } | |
c906108c | 281 | |
dc5c3759 MS |
282 | static void |
283 | h8_set_reg (SIM_DESC sd, int regnum, int val) | |
284 | { | |
285 | (STATE_CPU (sd, 0)) -> regs[regnum] = val; | |
286 | } | |
0ef9643e | 287 | |
dc5c3759 MS |
288 | #ifdef ADEBUG |
289 | static int | |
290 | h8_get_stats (SIM_DESC sd, int idx) | |
291 | { | |
292 | return sd -> stats[idx]; | |
293 | } | |
c906108c | 294 | |
dc5c3759 MS |
295 | static void |
296 | h8_increment_stats (SIM_DESC sd, int idx) | |
297 | { | |
298 | sd -> stats[idx] ++; | |
299 | } | |
300 | #endif /* ADEBUG */ | |
c906108c | 301 | |
dc5c3759 MS |
302 | static unsigned short * |
303 | h8_get_cache_idx_buf (SIM_DESC sd) | |
304 | { | |
305 | return sd -> cache_idx; | |
306 | } | |
c906108c | 307 | |
dc5c3759 MS |
308 | static void |
309 | h8_set_cache_idx_buf (SIM_DESC sd, unsigned short *ptr) | |
310 | { | |
311 | sd -> cache_idx = ptr; | |
312 | } | |
c906108c | 313 | |
dc5c3759 MS |
314 | static unsigned short |
315 | h8_get_cache_idx (SIM_DESC sd, unsigned int idx) | |
316 | { | |
317 | if (idx > sd->memory_size) | |
318 | return (unsigned short) -1; | |
319 | return sd -> cache_idx[idx]; | |
320 | } | |
c906108c | 321 | |
dc5c3759 MS |
322 | static void |
323 | h8_set_cache_idx (SIM_DESC sd, int idx, unsigned int val) | |
324 | { | |
325 | sd -> cache_idx[idx] = (unsigned short) val; | |
326 | } | |
c906108c | 327 | |
dc5c3759 MS |
328 | static unsigned char * |
329 | h8_get_memory_buf (SIM_DESC sd) | |
330 | { | |
331 | return (STATE_CPU (sd, 0)) -> memory; | |
332 | } | |
c906108c | 333 | |
dc5c3759 MS |
334 | static void |
335 | h8_set_memory_buf (SIM_DESC sd, unsigned char *ptr) | |
336 | { | |
337 | (STATE_CPU (sd, 0)) -> memory = ptr; | |
338 | } | |
c906108c | 339 | |
dc5c3759 MS |
340 | static unsigned char |
341 | h8_get_memory (SIM_DESC sd, int idx) | |
342 | { | |
343 | return (STATE_CPU (sd, 0)) -> memory[idx]; | |
344 | } | |
c906108c | 345 | |
dc5c3759 MS |
346 | static void |
347 | h8_set_memory (SIM_DESC sd, int idx, unsigned int val) | |
348 | { | |
349 | (STATE_CPU (sd, 0)) -> memory[idx] = (unsigned char) val; | |
350 | } | |
c906108c | 351 | |
dc5c3759 MS |
352 | static unsigned char * |
353 | h8_get_eightbit_buf (SIM_DESC sd) | |
354 | { | |
355 | return (STATE_CPU (sd, 0)) -> eightbit; | |
356 | } | |
c906108c | 357 | |
dc5c3759 MS |
358 | static void |
359 | h8_set_eightbit_buf (SIM_DESC sd, unsigned char *ptr) | |
360 | { | |
361 | (STATE_CPU (sd, 0)) -> eightbit = ptr; | |
362 | } | |
c906108c | 363 | |
dc5c3759 MS |
364 | static unsigned char |
365 | h8_get_eightbit (SIM_DESC sd, int idx) | |
366 | { | |
367 | return (STATE_CPU (sd, 0)) -> eightbit[idx]; | |
368 | } | |
c906108c | 369 | |
dc5c3759 MS |
370 | static void |
371 | h8_set_eightbit (SIM_DESC sd, int idx, unsigned int val) | |
372 | { | |
373 | (STATE_CPU (sd, 0)) -> eightbit[idx] = (unsigned char) val; | |
374 | } | |
c906108c | 375 | |
dc5c3759 MS |
376 | static unsigned int |
377 | h8_get_delayed_branch (SIM_DESC sd) | |
378 | { | |
379 | return (STATE_CPU (sd, 0)) -> delayed_branch; | |
c906108c SS |
380 | } |
381 | ||
c906108c | 382 | static void |
dc5c3759 | 383 | h8_set_delayed_branch (SIM_DESC sd, unsigned int dest) |
c906108c | 384 | { |
dc5c3759 MS |
385 | (STATE_CPU (sd, 0)) -> delayed_branch = dest; |
386 | } | |
c906108c | 387 | |
dc5c3759 MS |
388 | static char ** |
389 | h8_get_command_line (SIM_DESC sd) | |
390 | { | |
391 | return (STATE_CPU (sd, 0)) -> command_line; | |
392 | } | |
c906108c | 393 | |
dc5c3759 MS |
394 | static void |
395 | h8_set_command_line (SIM_DESC sd, char ** val) | |
396 | { | |
397 | (STATE_CPU (sd, 0)) -> command_line = val; | |
398 | } | |
c906108c | 399 | |
dc5c3759 MS |
400 | static char * |
401 | h8_get_cmdline_arg (SIM_DESC sd, int index) | |
402 | { | |
403 | return (STATE_CPU (sd, 0)) -> command_line[index]; | |
404 | } | |
c906108c | 405 | |
dc5c3759 MS |
406 | static void |
407 | h8_set_cmdline_arg (SIM_DESC sd, int index, char * val) | |
408 | { | |
409 | (STATE_CPU (sd, 0)) -> command_line[index] = val; | |
410 | } | |
c906108c | 411 | |
dc5c3759 MS |
412 | /* MAC Saturation Mode */ |
413 | static int | |
414 | h8_get_macS (SIM_DESC sd) | |
415 | { | |
416 | return (STATE_CPU (sd, 0)) -> macS; | |
c906108c SS |
417 | } |
418 | ||
dc5c3759 MS |
419 | static void |
420 | h8_set_macS (SIM_DESC sd, int val) | |
421 | { | |
422 | (STATE_CPU (sd, 0)) -> macS = (val != 0); | |
423 | } | |
c906108c | 424 | |
dc5c3759 MS |
425 | /* MAC Zero Flag */ |
426 | static int | |
427 | h8_get_macZ (SIM_DESC sd) | |
428 | { | |
429 | return (STATE_CPU (sd, 0)) -> macZ; | |
430 | } | |
c906108c | 431 | |
dc5c3759 MS |
432 | static void |
433 | h8_set_macZ (SIM_DESC sd, int val) | |
434 | { | |
435 | (STATE_CPU (sd, 0)) -> macZ = (val != 0); | |
436 | } | |
c906108c | 437 | |
dc5c3759 MS |
438 | /* MAC Negative Flag */ |
439 | static int | |
440 | h8_get_macN (SIM_DESC sd) | |
441 | { | |
442 | return (STATE_CPU (sd, 0)) -> macN; | |
443 | } | |
c906108c | 444 | |
dc5c3759 MS |
445 | static void |
446 | h8_set_macN (SIM_DESC sd, int val) | |
447 | { | |
448 | (STATE_CPU (sd, 0)) -> macN = (val != 0); | |
449 | } | |
c906108c | 450 | |
dc5c3759 MS |
451 | /* MAC Overflow Flag */ |
452 | static int | |
453 | h8_get_macV (SIM_DESC sd) | |
454 | { | |
455 | return (STATE_CPU (sd, 0)) -> macV; | |
456 | } | |
c906108c | 457 | |
dc5c3759 MS |
458 | static void |
459 | h8_set_macV (SIM_DESC sd, int val) | |
460 | { | |
461 | (STATE_CPU (sd, 0)) -> macV = (val != 0); | |
462 | } | |
c906108c | 463 | |
dc5c3759 | 464 | /* End CPU data object. */ |
c906108c | 465 | |
dc5c3759 | 466 | /* The rate at which to call the host's poll_quit callback. */ |
c906108c | 467 | |
dc5c3759 | 468 | enum { POLL_QUIT_INTERVAL = 0x80000 }; |
c906108c | 469 | |
dc5c3759 MS |
470 | #define LOW_BYTE(x) ((x) & 0xff) |
471 | #define HIGH_BYTE(x) (((x) >> 8) & 0xff) | |
472 | #define P(X, Y) ((X << 8) | Y) | |
c906108c | 473 | |
dc5c3759 MS |
474 | #define C (c != 0) |
475 | #define Z (nz == 0) | |
476 | #define V (v != 0) | |
477 | #define N (n != 0) | |
478 | #define U (u != 0) | |
479 | #define H (h != 0) | |
480 | #define UI (ui != 0) | |
481 | #define I (intMaskBit != 0) | |
c906108c | 482 | |
dc5c3759 MS |
483 | #define BUILDSR(SD) \ |
484 | h8_set_ccr (SD, (I << 7) | (UI << 6) | (H << 5) | (U << 4) \ | |
485 | | (N << 3) | (Z << 2) | (V << 1) | C) | |
c906108c | 486 | |
9f70f8ec MS |
487 | #define GETSR(SD) \ |
488 | /* Get Status Register (flags). */ \ | |
489 | c = (h8_get_ccr (sd) >> 0) & 1; \ | |
490 | v = (h8_get_ccr (sd) >> 1) & 1; \ | |
491 | nz = !((h8_get_ccr (sd) >> 2) & 1); \ | |
492 | n = (h8_get_ccr (sd) >> 3) & 1; \ | |
493 | u = (h8_get_ccr (sd) >> 4) & 1; \ | |
494 | h = (h8_get_ccr (sd) >> 5) & 1; \ | |
495 | ui = ((h8_get_ccr (sd) >> 6) & 1); \ | |
496 | intMaskBit = (h8_get_ccr (sd) >> 7) & 1 | |
497 | ||
498 | ||
dc5c3759 MS |
499 | #ifdef __CHAR_IS_SIGNED__ |
500 | #define SEXTCHAR(x) ((char) (x)) | |
501 | #endif | |
c906108c | 502 | |
dc5c3759 MS |
503 | #ifndef SEXTCHAR |
504 | #define SEXTCHAR(x) ((x & 0x80) ? (x | ~0xff) : x & 0xff) | |
505 | #endif | |
c906108c | 506 | |
dc5c3759 MS |
507 | #define UEXTCHAR(x) ((x) & 0xff) |
508 | #define UEXTSHORT(x) ((x) & 0xffff) | |
509 | #define SEXTSHORT(x) ((short) (x)) | |
c906108c | 510 | |
dc5c3759 MS |
511 | int h8300hmode = 0; |
512 | int h8300smode = 0; | |
513 | int h8300sxmode = 0; | |
c906108c | 514 | |
dc5c3759 | 515 | static int memory_size; |
c906108c | 516 | |
dc5c3759 MS |
517 | static int |
518 | get_now (void) | |
519 | { | |
520 | return time (0); /* WinXX HAS UNIX like 'time', so why not use it? */ | |
521 | } | |
c906108c | 522 | |
dc5c3759 MS |
523 | static int |
524 | now_persec (void) | |
525 | { | |
526 | return 1; | |
527 | } | |
c906108c | 528 | |
dc5c3759 MS |
529 | static int |
530 | bitfrom (int x) | |
531 | { | |
532 | switch (x & SIZE) | |
533 | { | |
534 | case L_8: | |
535 | return SB; | |
536 | case L_16: | |
537 | case L_16U: | |
538 | return SW; | |
539 | case L_32: | |
540 | return SL; | |
541 | case L_P: | |
542 | return h8300hmode ? SL : SW; | |
c906108c | 543 | } |
dc5c3759 | 544 | return 0; |
c906108c SS |
545 | } |
546 | ||
dc5c3759 MS |
547 | /* Simulate an indirection / dereference. |
548 | return 0 for success, -1 for failure. | |
549 | */ | |
c906108c | 550 | |
dc5c3759 MS |
551 | static unsigned int |
552 | lvalue (SIM_DESC sd, int x, int rn, unsigned int *val) | |
c906108c | 553 | { |
dc5c3759 MS |
554 | if (val == NULL) /* Paranoia. */ |
555 | return -1; | |
c906108c | 556 | |
dc5c3759 | 557 | switch (x / 4) |
c906108c | 558 | { |
dc5c3759 MS |
559 | case OP_DISP: |
560 | if (rn == ZERO_REGNUM) | |
561 | *val = X (OP_IMM, SP); | |
562 | else | |
563 | *val = X (OP_REG, SP); | |
c906108c | 564 | break; |
dc5c3759 MS |
565 | case OP_MEM: |
566 | *val = X (OP_MEM, SP); | |
c906108c SS |
567 | break; |
568 | default: | |
dc5c3759 MS |
569 | sim_engine_set_run_state (sd, sim_stopped, SIGSEGV); |
570 | return -1; | |
c906108c | 571 | } |
dc5c3759 | 572 | return 0; |
c906108c SS |
573 | } |
574 | ||
dc5c3759 MS |
575 | static int |
576 | cmdline_location() | |
c906108c | 577 | { |
dc5c3759 MS |
578 | if (h8300smode) |
579 | return 0xffff00L; | |
580 | else if (h8300hmode) | |
581 | return 0x2ff00L; | |
582 | else | |
583 | return 0xff00L; | |
c906108c SS |
584 | } |
585 | ||
de9b1892 | 586 | static void |
dc5c3759 | 587 | decode (SIM_DESC sd, int addr, unsigned char *data, decoded_inst *dst) |
c906108c | 588 | { |
dc5c3759 MS |
589 | int cst[3] = {0, 0, 0}; |
590 | int reg[3] = {0, 0, 0}; | |
591 | int rdisp[3] = {0, 0, 0}; | |
592 | int opnum; | |
593 | const struct h8_opcode *q; | |
c906108c | 594 | |
dc5c3759 MS |
595 | dst->dst.type = -1; |
596 | dst->src.type = -1; | |
c906108c | 597 | |
dc5c3759 MS |
598 | /* Find the exact opcode/arg combo. */ |
599 | for (q = h8_opcodes; q->name; q++) | |
600 | { | |
601 | op_type *nib = q->data.nib; | |
602 | unsigned int len = 0; | |
c906108c | 603 | |
dc5c3759 | 604 | if ((q->available == AV_H8SX && !h8300sxmode) || |
9f70f8ec | 605 | (q->available == AV_H8S && !h8300smode) || |
dc5c3759 MS |
606 | (q->available == AV_H8H && !h8300hmode)) |
607 | continue; | |
c906108c | 608 | |
dc5c3759 | 609 | while (1) |
c906108c | 610 | { |
dc5c3759 MS |
611 | op_type looking_for = *nib; |
612 | int thisnib = data[len / 2]; | |
c906108c | 613 | |
dc5c3759 MS |
614 | thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib >> 4) & 0xf); |
615 | opnum = ((looking_for & OP3) ? 2 : | |
616 | (looking_for & DST) ? 1 : 0); | |
617 | ||
618 | if (looking_for < 16 && looking_for >= 0) | |
c906108c | 619 | { |
dc5c3759 MS |
620 | if (looking_for != thisnib) |
621 | goto fail; | |
c906108c | 622 | } |
dc5c3759 | 623 | else |
c906108c | 624 | { |
dc5c3759 | 625 | if (looking_for & B31) |
c906108c | 626 | { |
dc5c3759 MS |
627 | if (!((thisnib & 0x8) != 0)) |
628 | goto fail; | |
629 | ||
630 | looking_for = (op_type) (looking_for & ~B31); | |
631 | thisnib &= 0x7; | |
c906108c | 632 | } |
dc5c3759 | 633 | else if (looking_for & B30) |
c906108c | 634 | { |
dc5c3759 MS |
635 | if (!((thisnib & 0x8) == 0)) |
636 | goto fail; | |
637 | ||
638 | looking_for = (op_type) (looking_for & ~B30); | |
c906108c | 639 | } |
c906108c | 640 | |
dc5c3759 MS |
641 | if (looking_for & B21) |
642 | { | |
643 | if (!((thisnib & 0x4) != 0)) | |
644 | goto fail; | |
c906108c | 645 | |
dc5c3759 MS |
646 | looking_for = (op_type) (looking_for & ~B21); |
647 | thisnib &= 0xb; | |
648 | } | |
649 | else if (looking_for & B20) | |
650 | { | |
651 | if (!((thisnib & 0x4) == 0)) | |
652 | goto fail; | |
c906108c | 653 | |
dc5c3759 MS |
654 | looking_for = (op_type) (looking_for & ~B20); |
655 | } | |
c906108c | 656 | |
dc5c3759 MS |
657 | if (looking_for & B11) |
658 | { | |
659 | if (!((thisnib & 0x2) != 0)) | |
660 | goto fail; | |
c906108c | 661 | |
dc5c3759 MS |
662 | looking_for = (op_type) (looking_for & ~B11); |
663 | thisnib &= 0xd; | |
664 | } | |
665 | else if (looking_for & B10) | |
666 | { | |
667 | if (!((thisnib & 0x2) == 0)) | |
668 | goto fail; | |
c906108c | 669 | |
dc5c3759 MS |
670 | looking_for = (op_type) (looking_for & ~B10); |
671 | } | |
c906108c | 672 | |
dc5c3759 MS |
673 | if (looking_for & B01) |
674 | { | |
675 | if (!((thisnib & 0x1) != 0)) | |
676 | goto fail; | |
c906108c | 677 | |
dc5c3759 MS |
678 | looking_for = (op_type) (looking_for & ~B01); |
679 | thisnib &= 0xe; | |
680 | } | |
681 | else if (looking_for & B00) | |
682 | { | |
683 | if (!((thisnib & 0x1) == 0)) | |
684 | goto fail; | |
c906108c | 685 | |
dc5c3759 MS |
686 | looking_for = (op_type) (looking_for & ~B00); |
687 | } | |
c906108c | 688 | |
dc5c3759 MS |
689 | if (looking_for & IGNORE) |
690 | { | |
691 | /* Hitachi has declared that IGNORE must be zero. */ | |
692 | if (thisnib != 0) | |
693 | goto fail; | |
694 | } | |
695 | else if ((looking_for & MODE) == DATA) | |
696 | { | |
697 | ; /* Skip embedded data. */ | |
698 | } | |
699 | else if ((looking_for & MODE) == DBIT) | |
700 | { | |
701 | /* Exclude adds/subs by looking at bit 0 and 2, and | |
702 | make sure the operand size, either w or l, | |
703 | matches by looking at bit 1. */ | |
704 | if ((looking_for & 7) != (thisnib & 7)) | |
705 | goto fail; | |
c906108c | 706 | |
dc5c3759 MS |
707 | cst[opnum] = (thisnib & 0x8) ? 2 : 1; |
708 | } | |
709 | else if ((looking_for & MODE) == REG || | |
710 | (looking_for & MODE) == LOWREG || | |
711 | (looking_for & MODE) == IND || | |
712 | (looking_for & MODE) == PREINC || | |
713 | (looking_for & MODE) == POSTINC || | |
714 | (looking_for & MODE) == PREDEC || | |
715 | (looking_for & MODE) == POSTDEC) | |
716 | { | |
717 | reg[opnum] = thisnib; | |
718 | } | |
719 | else if (looking_for & CTRL) | |
720 | { | |
721 | thisnib &= 7; | |
722 | if (((looking_for & MODE) == CCR && (thisnib != C_CCR)) || | |
723 | ((looking_for & MODE) == EXR && (thisnib != C_EXR)) || | |
724 | ((looking_for & MODE) == MACH && (thisnib != C_MACH)) || | |
725 | ((looking_for & MODE) == MACL && (thisnib != C_MACL)) || | |
726 | ((looking_for & MODE) == VBR && (thisnib != C_VBR)) || | |
727 | ((looking_for & MODE) == SBR && (thisnib != C_SBR))) | |
728 | goto fail; | |
729 | if (((looking_for & MODE) == CCR_EXR && | |
730 | (thisnib != C_CCR && thisnib != C_EXR)) || | |
731 | ((looking_for & MODE) == VBR_SBR && | |
732 | (thisnib != C_VBR && thisnib != C_SBR)) || | |
733 | ((looking_for & MODE) == MACREG && | |
734 | (thisnib != C_MACH && thisnib != C_MACL))) | |
735 | goto fail; | |
736 | if (((looking_for & MODE) == CC_EX_VB_SB && | |
737 | (thisnib != C_CCR && thisnib != C_EXR && | |
738 | thisnib != C_VBR && thisnib != C_SBR))) | |
739 | goto fail; | |
c906108c | 740 | |
dc5c3759 MS |
741 | reg[opnum] = thisnib; |
742 | } | |
743 | else if ((looking_for & MODE) == ABS) | |
744 | { | |
745 | /* Absolute addresses are unsigned. */ | |
746 | switch (looking_for & SIZE) | |
747 | { | |
748 | case L_8: | |
749 | cst[opnum] = UEXTCHAR (data[len / 2]); | |
750 | break; | |
751 | case L_16: | |
752 | case L_16U: | |
753 | cst[opnum] = (data[len / 2] << 8) + data[len / 2 + 1]; | |
754 | break; | |
755 | case L_32: | |
756 | cst[opnum] = | |
757 | (data[len / 2 + 0] << 24) + | |
758 | (data[len / 2 + 1] << 16) + | |
759 | (data[len / 2 + 2] << 8) + | |
760 | (data[len / 2 + 3]); | |
761 | break; | |
762 | default: | |
763 | printf ("decode: bad size ABS: %d\n", | |
764 | (looking_for & SIZE)); | |
765 | goto end; | |
766 | } | |
767 | } | |
768 | else if ((looking_for & MODE) == DISP || | |
769 | (looking_for & MODE) == PCREL || | |
770 | (looking_for & MODE) == INDEXB || | |
771 | (looking_for & MODE) == INDEXW || | |
772 | (looking_for & MODE) == INDEXL) | |
6147b1f6 | 773 | |
dc5c3759 MS |
774 | { |
775 | switch (looking_for & SIZE) | |
776 | { | |
777 | case L_2: | |
778 | cst[opnum] = thisnib & 3; | |
6147b1f6 | 779 | |
dc5c3759 MS |
780 | /* DISP2 special treatment. */ |
781 | if ((looking_for & MODE) == DISP) | |
782 | { | |
783 | switch (OP_SIZE (q->how)) { | |
784 | default: break; | |
785 | case SW: | |
786 | cst[opnum] *= 2; | |
787 | break; | |
788 | case SL: | |
789 | cst[opnum] *= 4; | |
790 | break; | |
791 | } | |
792 | } | |
793 | break; | |
794 | case L_8: | |
795 | cst[opnum] = SEXTCHAR (data[len / 2]); | |
796 | break; | |
797 | case L_16: | |
798 | cst[opnum] = (data[len / 2] << 8) + data[len / 2 + 1]; | |
799 | cst[opnum] = (short) cst[opnum]; /* Sign extend. */ | |
800 | break; | |
801 | case L_16U: | |
802 | cst[opnum] = (data[len / 2] << 8) + data[len / 2 + 1]; | |
803 | break; | |
804 | case L_32: | |
805 | cst[opnum] = | |
806 | (data[len / 2 + 0] << 24) + | |
807 | (data[len / 2 + 1] << 16) + | |
808 | (data[len / 2 + 2] << 8) + | |
809 | (data[len / 2 + 3]); | |
810 | break; | |
811 | default: | |
812 | printf ("decode: bad size DISP/PCREL/INDEX: %d\n", | |
813 | (looking_for & SIZE)); | |
814 | goto end; | |
815 | } | |
816 | } | |
817 | else if ((looking_for & SIZE) == L_16 || | |
818 | (looking_for & SIZE) == L_16U) | |
819 | { | |
820 | cst[opnum] = (data[len / 2] << 8) + data[len / 2 + 1]; | |
0f42aa71 MS |
821 | /* Immediates are always unsigned. */ |
822 | if ((looking_for & SIZE) != L_16U && | |
823 | (looking_for & MODE) != IMM) | |
dc5c3759 MS |
824 | cst[opnum] = (short) cst[opnum]; /* Sign extend. */ |
825 | } | |
826 | else if (looking_for & ABSJMP) | |
827 | { | |
828 | switch (looking_for & SIZE) { | |
829 | case L_24: | |
830 | cst[opnum] = (data[1] << 16) | (data[2] << 8) | (data[3]); | |
831 | break; | |
832 | case L_32: | |
833 | cst[opnum] = | |
834 | (data[len / 2 + 0] << 24) + | |
835 | (data[len / 2 + 1] << 16) + | |
836 | (data[len / 2 + 2] << 8) + | |
837 | (data[len / 2 + 3]); | |
838 | break; | |
839 | default: | |
840 | printf ("decode: bad size ABSJMP: %d\n", | |
841 | (looking_for & SIZE)); | |
842 | goto end; | |
843 | } | |
844 | } | |
845 | else if ((looking_for & MODE) == MEMIND) | |
846 | { | |
847 | cst[opnum] = data[1]; | |
848 | } | |
9f70f8ec MS |
849 | else if ((looking_for & MODE) == VECIND) |
850 | { | |
851 | /* FIXME: Multiplier should be 2 for "normal" mode. */ | |
852 | cst[opnum] = ((data[1] & 0x7f) + 0x80) * 4; | |
853 | cst[opnum] += h8_get_vbr (sd); /* Add vector base reg. */ | |
854 | } | |
dc5c3759 MS |
855 | else if ((looking_for & SIZE) == L_32) |
856 | { | |
857 | int i = len / 2; | |
6147b1f6 | 858 | |
dc5c3759 MS |
859 | cst[opnum] = |
860 | (data[i + 0] << 24) | | |
861 | (data[i + 1] << 16) | | |
862 | (data[i + 2] << 8) | | |
863 | (data[i + 3]); | |
864 | } | |
865 | else if ((looking_for & SIZE) == L_24) | |
866 | { | |
867 | int i = len / 2; | |
6147b1f6 | 868 | |
dc5c3759 MS |
869 | cst[opnum] = |
870 | (data[i + 0] << 16) | | |
871 | (data[i + 1] << 8) | | |
872 | (data[i + 2]); | |
873 | } | |
874 | else if (looking_for & DISPREG) | |
875 | { | |
876 | rdisp[opnum] = thisnib & 0x7; | |
877 | } | |
878 | else if ((looking_for & MODE) == KBIT) | |
879 | { | |
880 | switch (thisnib) | |
881 | { | |
882 | case 9: | |
883 | cst[opnum] = 4; | |
884 | break; | |
885 | case 8: | |
886 | cst[opnum] = 2; | |
887 | break; | |
888 | case 0: | |
889 | cst[opnum] = 1; | |
890 | break; | |
891 | default: | |
892 | goto fail; | |
893 | } | |
894 | } | |
895 | else if ((looking_for & SIZE) == L_8) | |
896 | { | |
897 | if ((looking_for & MODE) == ABS) | |
898 | { | |
899 | /* Will be combined with contents of SBR_REGNUM | |
900 | by fetch (). For all modes except h8sx, this | |
901 | will always contain the value 0xFFFFFF00. */ | |
902 | cst[opnum] = data[len / 2] & 0xff; | |
903 | } | |
904 | else | |
905 | { | |
906 | cst[opnum] = data[len / 2] & 0xff; | |
907 | } | |
908 | } | |
9f70f8ec MS |
909 | else if ((looking_for & SIZE) == L_2) |
910 | { | |
911 | cst[opnum] = thisnib & 3; | |
912 | } | |
dc5c3759 MS |
913 | else if ((looking_for & SIZE) == L_3 || |
914 | (looking_for & SIZE) == L_3NZ) | |
915 | { | |
916 | cst[opnum] = thisnib & 7; | |
917 | if (cst[opnum] == 0 && (looking_for & SIZE) == L_3NZ) | |
918 | goto fail; | |
919 | } | |
920 | else if ((looking_for & SIZE) == L_4) | |
921 | { | |
922 | cst[opnum] = thisnib & 15; | |
923 | } | |
924 | else if ((looking_for & SIZE) == L_5) | |
925 | { | |
926 | cst[opnum] = data[len / 2] & 0x1f; | |
927 | } | |
928 | else if (looking_for == E) | |
929 | { | |
930 | #ifdef ADEBUG | |
931 | dst->op = q; | |
932 | #endif | |
933 | /* Fill in the args. */ | |
934 | { | |
935 | op_type *args = q->args.nib; | |
936 | int hadone = 0; | |
937 | int nargs; | |
6147b1f6 | 938 | |
dc5c3759 MS |
939 | for (nargs = 0; |
940 | nargs < 3 && *args != E; | |
941 | nargs++) | |
942 | { | |
943 | int x = *args; | |
944 | ea_type *p; | |
c906108c | 945 | |
dc5c3759 MS |
946 | opnum = ((x & OP3) ? 2 : |
947 | (x & DST) ? 1 : 0); | |
948 | if (x & DST) | |
949 | p = &dst->dst; | |
950 | else if (x & OP3) | |
951 | p = &dst->op3; | |
952 | else | |
953 | p = &dst->src; | |
c906108c | 954 | |
dc5c3759 MS |
955 | if ((x & MODE) == IMM || |
956 | (x & MODE) == KBIT || | |
957 | (x & MODE) == DBIT) | |
958 | { | |
959 | /* Use the instruction to determine | |
960 | the operand size. */ | |
961 | p->type = X (OP_IMM, OP_SIZE (q->how)); | |
962 | p->literal = cst[opnum]; | |
963 | } | |
964 | else if ((x & MODE) == CONST_2 || | |
965 | (x & MODE) == CONST_4 || | |
966 | (x & MODE) == CONST_8 || | |
967 | (x & MODE) == CONST_16) | |
968 | { | |
969 | /* Use the instruction to determine | |
970 | the operand size. */ | |
971 | p->type = X (OP_IMM, OP_SIZE (q->how)); | |
972 | switch (x & MODE) { | |
973 | case CONST_2: p->literal = 2; break; | |
974 | case CONST_4: p->literal = 4; break; | |
975 | case CONST_8: p->literal = 8; break; | |
976 | case CONST_16: p->literal = 16; break; | |
977 | } | |
978 | } | |
979 | else if ((x & MODE) == REG) | |
980 | { | |
981 | p->type = X (OP_REG, bitfrom (x)); | |
982 | p->reg = reg[opnum]; | |
983 | } | |
984 | else if ((x & MODE) == LOWREG) | |
985 | { | |
986 | p->type = X (OP_LOWREG, bitfrom (x)); | |
987 | p->reg = reg[opnum]; | |
988 | } | |
989 | else if ((x & MODE) == PREINC) | |
990 | { | |
991 | /* Use the instruction to determine | |
992 | the operand size. */ | |
993 | p->type = X (OP_PREINC, OP_SIZE (q->how)); | |
994 | p->reg = reg[opnum] & 0x7; | |
995 | } | |
996 | else if ((x & MODE) == POSTINC) | |
997 | { | |
998 | /* Use the instruction to determine | |
999 | the operand size. */ | |
1000 | p->type = X (OP_POSTINC, OP_SIZE (q->how)); | |
1001 | p->reg = reg[opnum] & 0x7; | |
1002 | } | |
1003 | else if ((x & MODE) == PREDEC) | |
1004 | { | |
1005 | /* Use the instruction to determine | |
1006 | the operand size. */ | |
1007 | p->type = X (OP_PREDEC, OP_SIZE (q->how)); | |
1008 | p->reg = reg[opnum] & 0x7; | |
1009 | } | |
1010 | else if ((x & MODE) == POSTDEC) | |
1011 | { | |
1012 | /* Use the instruction to determine | |
1013 | the operand size. */ | |
1014 | p->type = X (OP_POSTDEC, OP_SIZE (q->how)); | |
1015 | p->reg = reg[opnum] & 0x7; | |
1016 | } | |
1017 | else if ((x & MODE) == IND) | |
1018 | { | |
1019 | /* Note: an indirect is transformed into | |
1020 | a displacement of zero. | |
1021 | */ | |
1022 | /* Use the instruction to determine | |
1023 | the operand size. */ | |
1024 | p->type = X (OP_DISP, OP_SIZE (q->how)); | |
1025 | p->reg = reg[opnum] & 0x7; | |
1026 | p->literal = 0; | |
1027 | if (OP_KIND (q->how) == O_JSR || | |
1028 | OP_KIND (q->how) == O_JMP) | |
1029 | if (lvalue (sd, p->type, p->reg, &p->type)) | |
1030 | goto end; | |
1031 | } | |
1032 | else if ((x & MODE) == ABS) | |
1033 | { | |
1034 | /* Note: a 16 or 32 bit ABS is transformed into a | |
1035 | displacement from pseudo-register ZERO_REGNUM, | |
1036 | which is always zero. An 8 bit ABS becomes | |
1037 | a displacement from SBR_REGNUM. | |
1038 | */ | |
1039 | /* Use the instruction to determine | |
1040 | the operand size. */ | |
1041 | p->type = X (OP_DISP, OP_SIZE (q->how)); | |
1042 | p->literal = cst[opnum]; | |
1043 | ||
1044 | /* 8-bit ABS is displacement from SBR. | |
1045 | 16 and 32-bit ABS are displacement from ZERO. | |
1046 | (SBR will always be zero except for h8/sx) | |
1047 | */ | |
1048 | if ((x & SIZE) == L_8) | |
1049 | p->reg = SBR_REGNUM; | |
1050 | else | |
1051 | p->reg = ZERO_REGNUM;; | |
1052 | } | |
9f70f8ec MS |
1053 | else if ((x & MODE) == MEMIND || |
1054 | (x & MODE) == VECIND) | |
dc5c3759 MS |
1055 | { |
1056 | /* Size doesn't matter. */ | |
1057 | p->type = X (OP_MEM, SB); | |
1058 | p->literal = cst[opnum]; | |
1059 | if (OP_KIND (q->how) == O_JSR || | |
1060 | OP_KIND (q->how) == O_JMP) | |
1061 | if (lvalue (sd, p->type, p->reg, &p->type)) | |
1062 | goto end; | |
1063 | } | |
1064 | else if ((x & MODE) == PCREL) | |
1065 | { | |
1066 | /* Size doesn't matter. */ | |
1067 | p->type = X (OP_PCREL, SB); | |
1068 | p->literal = cst[opnum]; | |
1069 | } | |
1070 | else if (x & ABSJMP) | |
1071 | { | |
1072 | p->type = X (OP_IMM, SP); | |
1073 | p->literal = cst[opnum]; | |
1074 | } | |
1075 | else if ((x & MODE) == INDEXB || | |
1076 | (x & MODE) == INDEXW || | |
1077 | (x & MODE) == INDEXL || | |
1078 | (x & MODE) == DISP) | |
1079 | { | |
1080 | /* Use the instruction to determine | |
1081 | the operand size. */ | |
1082 | switch (x & MODE) { | |
1083 | case INDEXB: | |
1084 | p->type = X (OP_INDEXB, OP_SIZE (q->how)); | |
1085 | break; | |
1086 | case INDEXW: | |
1087 | p->type = X (OP_INDEXW, OP_SIZE (q->how)); | |
1088 | break; | |
1089 | case INDEXL: | |
1090 | p->type = X (OP_INDEXL, OP_SIZE (q->how)); | |
1091 | break; | |
1092 | case DISP: | |
1093 | p->type = X (OP_DISP, OP_SIZE (q->how)); | |
1094 | break; | |
1095 | } | |
1096 | ||
1097 | p->literal = cst[opnum]; | |
1098 | p->reg = rdisp[opnum]; | |
1099 | } | |
1100 | else if (x & CTRL) | |
1101 | { | |
1102 | switch (reg[opnum]) | |
1103 | { | |
1104 | case C_CCR: | |
1105 | p->type = X (OP_CCR, SB); | |
1106 | break; | |
1107 | case C_EXR: | |
1108 | p->type = X (OP_EXR, SB); | |
1109 | break; | |
1110 | case C_MACH: | |
1111 | p->type = X (OP_MACH, SL); | |
1112 | break; | |
1113 | case C_MACL: | |
1114 | p->type = X (OP_MACL, SL); | |
1115 | break; | |
1116 | case C_VBR: | |
1117 | p->type = X (OP_VBR, SL); | |
1118 | break; | |
1119 | case C_SBR: | |
1120 | p->type = X (OP_SBR, SL); | |
1121 | break; | |
1122 | } | |
1123 | } | |
1124 | else if ((x & MODE) == CCR) | |
1125 | { | |
1126 | p->type = OP_CCR; | |
1127 | } | |
1128 | else if ((x & MODE) == EXR) | |
1129 | { | |
1130 | p->type = OP_EXR; | |
1131 | } | |
1132 | else | |
9f70f8ec | 1133 | printf ("Hmmmm 0x%x...\n", x); |
c906108c | 1134 | |
dc5c3759 MS |
1135 | args++; |
1136 | } | |
1137 | } | |
c906108c | 1138 | |
dc5c3759 MS |
1139 | /* Unary operators: treat src and dst as equivalent. */ |
1140 | if (dst->dst.type == -1) | |
1141 | dst->dst = dst->src; | |
1142 | if (dst->src.type == -1) | |
1143 | dst->src = dst->dst; | |
1144 | ||
1145 | dst->opcode = q->how; | |
1146 | dst->cycles = q->time; | |
c906108c | 1147 | |
dc5c3759 MS |
1148 | /* And jsr's to these locations are turned into |
1149 | magic traps. */ | |
fc974602 | 1150 | |
dc5c3759 MS |
1151 | if (OP_KIND (dst->opcode) == O_JSR) |
1152 | { | |
1153 | switch (dst->src.literal) | |
1154 | { | |
1155 | case 0xc5: | |
1156 | dst->opcode = O (O_SYS_OPEN, SB); | |
1157 | break; | |
1158 | case 0xc6: | |
1159 | dst->opcode = O (O_SYS_READ, SB); | |
1160 | break; | |
1161 | case 0xc7: | |
1162 | dst->opcode = O (O_SYS_WRITE, SB); | |
1163 | break; | |
1164 | case 0xc8: | |
1165 | dst->opcode = O (O_SYS_LSEEK, SB); | |
1166 | break; | |
1167 | case 0xc9: | |
1168 | dst->opcode = O (O_SYS_CLOSE, SB); | |
1169 | break; | |
1170 | case 0xca: | |
1171 | dst->opcode = O (O_SYS_STAT, SB); | |
1172 | break; | |
1173 | case 0xcb: | |
1174 | dst->opcode = O (O_SYS_FSTAT, SB); | |
1175 | break; | |
1176 | case 0xcc: | |
1177 | dst->opcode = O (O_SYS_CMDLINE, SB); | |
1178 | break; | |
1179 | } | |
1180 | /* End of Processing for system calls. */ | |
1181 | } | |
1182 | ||
1183 | dst->next_pc = addr + len / 2; | |
1184 | return; | |
1185 | } | |
1186 | else | |
9f70f8ec | 1187 | printf ("Don't understand 0x%x \n", looking_for); |
dc5c3759 MS |
1188 | } |
1189 | ||
1190 | len++; | |
1191 | nib++; | |
1192 | } | |
1193 | ||
1194 | fail: | |
1195 | ; | |
1196 | } | |
1197 | end: | |
1198 | /* Fell off the end. */ | |
1199 | dst->opcode = O (O_ILL, SB); | |
1200 | } | |
1201 | ||
1202 | static void | |
1203 | compile (SIM_DESC sd, int pc) | |
1204 | { | |
1205 | int idx; | |
1206 | ||
1207 | /* Find the next cache entry to use. */ | |
1208 | idx = h8_get_cache_top (sd) + 1; | |
1209 | h8_increment_compiles (sd); | |
1210 | if (idx >= sd->sim_cache_size) | |
c906108c | 1211 | { |
dc5c3759 MS |
1212 | idx = 1; |
1213 | } | |
1214 | h8_set_cache_top (sd, idx); | |
c906108c | 1215 | |
dc5c3759 MS |
1216 | /* Throw away its old meaning. */ |
1217 | h8_set_cache_idx (sd, sd->sim_cache[idx].oldpc, 0); | |
1218 | ||
1219 | /* Set to new address. */ | |
1220 | sd->sim_cache[idx].oldpc = pc; | |
c906108c | 1221 | |
dc5c3759 MS |
1222 | /* Fill in instruction info. */ |
1223 | decode (sd, pc, h8_get_memory_buf (sd) + pc, sd->sim_cache + idx); | |
c906108c | 1224 | |
dc5c3759 MS |
1225 | /* Point to new cache entry. */ |
1226 | h8_set_cache_idx (sd, pc, idx); | |
1227 | } | |
c906108c SS |
1228 | |
1229 | ||
dc5c3759 MS |
1230 | static unsigned char *breg[32]; |
1231 | static unsigned short *wreg[16]; | |
1232 | static unsigned int *lreg[18]; | |
1233 | ||
1234 | #define GET_B_REG(X) *(breg[X]) | |
1235 | #define SET_B_REG(X, Y) (*(breg[X])) = (Y) | |
1236 | #define GET_W_REG(X) *(wreg[X]) | |
1237 | #define SET_W_REG(X, Y) (*(wreg[X])) = (Y) | |
1238 | #define GET_L_REG(X) h8_get_reg (sd, X) | |
1239 | #define SET_L_REG(X, Y) h8_set_reg (sd, X, Y) | |
1240 | ||
1241 | #define GET_MEMORY_L(X) \ | |
1242 | ((X) < memory_size \ | |
1243 | ? ((h8_get_memory (sd, (X)+0) << 24) | (h8_get_memory (sd, (X)+1) << 16) \ | |
1244 | | (h8_get_memory (sd, (X)+2) << 8) | (h8_get_memory (sd, (X)+3) << 0)) \ | |
1245 | : ((h8_get_eightbit (sd, ((X)+0) & 0xff) << 24) \ | |
1246 | | (h8_get_eightbit (sd, ((X)+1) & 0xff) << 16) \ | |
1247 | | (h8_get_eightbit (sd, ((X)+2) & 0xff) << 8) \ | |
1248 | | (h8_get_eightbit (sd, ((X)+3) & 0xff) << 0))) | |
1249 | ||
1250 | #define GET_MEMORY_W(X) \ | |
1251 | ((X) < memory_size \ | |
1252 | ? ((h8_get_memory (sd, (X)+0) << 8) \ | |
1253 | | (h8_get_memory (sd, (X)+1) << 0)) \ | |
1254 | : ((h8_get_eightbit (sd, ((X)+0) & 0xff) << 8) \ | |
1255 | | (h8_get_eightbit (sd, ((X)+1) & 0xff) << 0))) | |
1256 | ||
1257 | ||
1258 | #define GET_MEMORY_B(X) \ | |
1259 | ((X) < memory_size ? (h8_get_memory (sd, (X))) \ | |
1260 | : (h8_get_eightbit (sd, (X) & 0xff))) | |
1261 | ||
1262 | #define SET_MEMORY_L(X, Y) \ | |
1263 | { register unsigned char *_p; register int __y = (Y); \ | |
1264 | _p = ((X) < memory_size ? h8_get_memory_buf (sd) + (X) : \ | |
1265 | h8_get_eightbit_buf (sd) + ((X) & 0xff)); \ | |
1266 | _p[0] = __y >> 24; _p[1] = __y >> 16; \ | |
1267 | _p[2] = __y >> 8; _p[3] = __y >> 0; \ | |
1268 | } | |
c906108c | 1269 | |
dc5c3759 MS |
1270 | #define SET_MEMORY_W(X, Y) \ |
1271 | { register unsigned char *_p; register int __y = (Y); \ | |
1272 | _p = ((X) < memory_size ? h8_get_memory_buf (sd) + (X) : \ | |
1273 | h8_get_eightbit_buf (sd) + ((X) & 0xff)); \ | |
1274 | _p[0] = __y >> 8; _p[1] = __y; \ | |
1275 | } | |
c906108c | 1276 | |
dc5c3759 MS |
1277 | #define SET_MEMORY_B(X, Y) \ |
1278 | ((X) < memory_size ? (h8_set_memory (sd, (X), (Y))) \ | |
1279 | : (h8_set_eightbit (sd, (X) & 0xff, (Y)))) | |
c906108c | 1280 | |
dc5c3759 MS |
1281 | /* Simulate a memory fetch. |
1282 | Return 0 for success, -1 for failure. | |
1283 | */ | |
c906108c | 1284 | |
dc5c3759 MS |
1285 | static int |
1286 | fetch_1 (SIM_DESC sd, ea_type *arg, int *val, int twice) | |
1287 | { | |
1288 | int rn = arg->reg; | |
1289 | int abs = arg->literal; | |
1290 | int r; | |
1291 | int t; | |
1292 | ||
1293 | if (val == NULL) | |
1294 | return -1; /* Paranoia. */ | |
1295 | ||
1296 | switch (arg->type) | |
1297 | { | |
1298 | /* Indexed register plus displacement mode: | |
1299 | ||
1300 | This new family of addressing modes are similar to OP_DISP | |
1301 | (register plus displacement), with two differences: | |
1302 | 1) INDEXB uses only the least significant byte of the register, | |
1303 | INDEXW uses only the least significant word, and | |
1304 | INDEXL uses the entire register (just like OP_DISP). | |
1305 | and | |
1306 | 2) The displacement value in abs is multiplied by two | |
1307 | for SW-sized operations, and by four for SL-size. | |
1308 | ||
1309 | This gives nine possible variations. | |
1310 | */ | |
1311 | ||
1312 | case X (OP_INDEXB, SB): | |
1313 | case X (OP_INDEXB, SW): | |
1314 | case X (OP_INDEXB, SL): | |
1315 | case X (OP_INDEXW, SB): | |
1316 | case X (OP_INDEXW, SW): | |
1317 | case X (OP_INDEXW, SL): | |
1318 | case X (OP_INDEXL, SB): | |
1319 | case X (OP_INDEXL, SW): | |
1320 | case X (OP_INDEXL, SL): | |
1321 | t = GET_L_REG (rn); | |
1322 | switch (OP_KIND (arg->type)) { | |
1323 | case OP_INDEXB: t &= 0xff; break; | |
1324 | case OP_INDEXW: t &= 0xffff; break; | |
1325 | case OP_INDEXL: | |
1326 | default: break; | |
1327 | } | |
1328 | switch (OP_SIZE (arg->type)) { | |
1329 | case SB: | |
1330 | *val = GET_MEMORY_B ((t * 1 + abs) & h8_get_mask (sd)); | |
1331 | break; | |
1332 | case SW: | |
1333 | *val = GET_MEMORY_W ((t * 2 + abs) & h8_get_mask (sd)); | |
1334 | break; | |
1335 | case SL: | |
1336 | *val = GET_MEMORY_L ((t * 4 + abs) & h8_get_mask (sd)); | |
1337 | break; | |
1338 | } | |
1339 | break; | |
1340 | ||
1341 | case X (OP_LOWREG, SB): | |
1342 | *val = GET_L_REG (rn) & 0xff; | |
1343 | break; | |
1344 | case X (OP_LOWREG, SW): | |
1345 | *val = GET_L_REG (rn) & 0xffff; | |
1346 | break; | |
1347 | ||
1348 | case X (OP_REG, SB): /* Register direct, byte. */ | |
1349 | *val = GET_B_REG (rn); | |
1350 | break; | |
1351 | case X (OP_REG, SW): /* Register direct, word. */ | |
1352 | *val = GET_W_REG (rn); | |
1353 | break; | |
1354 | case X (OP_REG, SL): /* Register direct, long. */ | |
1355 | *val = GET_L_REG (rn); | |
1356 | break; | |
1357 | case X (OP_IMM, SB): /* Immediate, byte. */ | |
1358 | case X (OP_IMM, SW): /* Immediate, word. */ | |
1359 | case X (OP_IMM, SL): /* Immediate, long. */ | |
1360 | *val = abs; | |
1361 | break; | |
1362 | case X (OP_POSTINC, SB): /* Register indirect w/post-incr: byte. */ | |
1363 | t = GET_L_REG (rn); | |
1364 | t &= h8_get_mask (sd); | |
1365 | r = GET_MEMORY_B (t); | |
1366 | if (!twice) | |
1367 | t += 1; | |
1368 | t = t & h8_get_mask (sd); | |
1369 | SET_L_REG (rn, t); | |
1370 | *val = r; | |
1371 | break; | |
1372 | case X (OP_POSTINC, SW): /* Register indirect w/post-incr: word. */ | |
1373 | t = GET_L_REG (rn); | |
1374 | t &= h8_get_mask (sd); | |
1375 | r = GET_MEMORY_W (t); | |
1376 | if (!twice) | |
1377 | t += 2; | |
1378 | t = t & h8_get_mask (sd); | |
1379 | SET_L_REG (rn, t); | |
1380 | *val = r; | |
1381 | break; | |
1382 | case X (OP_POSTINC, SL): /* Register indirect w/post-incr: long. */ | |
1383 | t = GET_L_REG (rn); | |
1384 | t &= h8_get_mask (sd); | |
1385 | r = GET_MEMORY_L (t); | |
1386 | if (!twice) | |
1387 | t += 4; | |
1388 | t = t & h8_get_mask (sd); | |
1389 | SET_L_REG (rn, t); | |
1390 | *val = r; | |
1391 | break; | |
1392 | ||
1393 | case X (OP_POSTDEC, SB): /* Register indirect w/post-decr: byte. */ | |
1394 | t = GET_L_REG (rn); | |
1395 | t &= h8_get_mask (sd); | |
1396 | r = GET_MEMORY_B (t); | |
1397 | if (!twice) | |
1398 | t -= 1; | |
1399 | t = t & h8_get_mask (sd); | |
1400 | SET_L_REG (rn, t); | |
1401 | *val = r; | |
1402 | break; | |
1403 | case X (OP_POSTDEC, SW): /* Register indirect w/post-decr: word. */ | |
1404 | t = GET_L_REG (rn); | |
1405 | t &= h8_get_mask (sd); | |
1406 | r = GET_MEMORY_W (t); | |
1407 | if (!twice) | |
1408 | t -= 2; | |
1409 | t = t & h8_get_mask (sd); | |
1410 | SET_L_REG (rn, t); | |
1411 | *val = r; | |
1412 | break; | |
1413 | case X (OP_POSTDEC, SL): /* Register indirect w/post-decr: long. */ | |
1414 | t = GET_L_REG (rn); | |
1415 | t &= h8_get_mask (sd); | |
1416 | r = GET_MEMORY_L (t); | |
1417 | if (!twice) | |
1418 | t -= 4; | |
1419 | t = t & h8_get_mask (sd); | |
1420 | SET_L_REG (rn, t); | |
1421 | *val = r; | |
1422 | break; | |
1423 | ||
1424 | case X (OP_PREDEC, SB): /* Register indirect w/pre-decr: byte. */ | |
1425 | t = GET_L_REG (rn) - 1; | |
1426 | t &= h8_get_mask (sd); | |
1427 | SET_L_REG (rn, t); | |
1428 | *val = GET_MEMORY_B (t); | |
1429 | break; | |
1430 | ||
1431 | case X (OP_PREDEC, SW): /* Register indirect w/pre-decr: word. */ | |
1432 | t = GET_L_REG (rn) - 2; | |
1433 | t &= h8_get_mask (sd); | |
1434 | SET_L_REG (rn, t); | |
1435 | *val = GET_MEMORY_W (t); | |
1436 | break; | |
1437 | ||
1438 | case X (OP_PREDEC, SL): /* Register indirect w/pre-decr: long. */ | |
1439 | t = GET_L_REG (rn) - 4; | |
1440 | t &= h8_get_mask (sd); | |
1441 | SET_L_REG (rn, t); | |
1442 | *val = GET_MEMORY_L (t); | |
1443 | break; | |
1444 | ||
1445 | case X (OP_PREINC, SB): /* Register indirect w/pre-incr: byte. */ | |
1446 | t = GET_L_REG (rn) + 1; | |
1447 | t &= h8_get_mask (sd); | |
1448 | SET_L_REG (rn, t); | |
1449 | *val = GET_MEMORY_B (t); | |
1450 | break; | |
1451 | ||
1452 | case X (OP_PREINC, SW): /* Register indirect w/pre-incr: long. */ | |
1453 | t = GET_L_REG (rn) + 2; | |
1454 | t &= h8_get_mask (sd); | |
1455 | SET_L_REG (rn, t); | |
1456 | *val = GET_MEMORY_W (t); | |
1457 | break; | |
1458 | ||
1459 | case X (OP_PREINC, SL): /* Register indirect w/pre-incr: long. */ | |
1460 | t = GET_L_REG (rn) + 4; | |
1461 | t &= h8_get_mask (sd); | |
1462 | SET_L_REG (rn, t); | |
1463 | *val = GET_MEMORY_L (t); | |
1464 | break; | |
1465 | ||
1466 | case X (OP_DISP, SB): /* Register indirect w/displacement: byte. */ | |
1467 | t = GET_L_REG (rn) + abs; | |
1468 | t &= h8_get_mask (sd); | |
1469 | *val = GET_MEMORY_B (t); | |
1470 | break; | |
1471 | ||
1472 | case X (OP_DISP, SW): /* Register indirect w/displacement: word. */ | |
1473 | t = GET_L_REG (rn) + abs; | |
1474 | t &= h8_get_mask (sd); | |
1475 | *val = GET_MEMORY_W (t); | |
1476 | break; | |
1477 | ||
1478 | case X (OP_DISP, SL): /* Register indirect w/displacement: long. */ | |
1479 | t = GET_L_REG (rn) + abs; | |
1480 | t &= h8_get_mask (sd); | |
1481 | *val =GET_MEMORY_L (t); | |
1482 | break; | |
1483 | ||
1484 | case X (OP_MEM, SL): /* Absolute memory address, long. */ | |
1485 | t = GET_MEMORY_L (abs); | |
1486 | t &= h8_get_mask (sd); | |
1487 | *val = t; | |
1488 | break; | |
1489 | ||
1490 | case X (OP_MEM, SW): /* Absolute memory address, word. */ | |
1491 | t = GET_MEMORY_W (abs); | |
1492 | t &= h8_get_mask (sd); | |
1493 | *val = t; | |
1494 | break; | |
1495 | ||
1496 | case X (OP_PCREL, SB): /* PC relative (for jump, branch etc). */ | |
1497 | case X (OP_PCREL, SW): | |
1498 | case X (OP_PCREL, SL): | |
1499 | case X (OP_PCREL, SN): | |
1500 | *val = abs; | |
1501 | break; | |
1502 | ||
1503 | case X (OP_MEM, SB): /* Why isn't this implemented? */ | |
1504 | default: | |
1505 | sim_engine_set_run_state (sd, sim_stopped, SIGSEGV); | |
1506 | return -1; | |
1507 | } | |
1508 | return 0; /* Success. */ | |
1509 | } | |
1510 | ||
1511 | /* Normal fetch. */ | |
1512 | ||
1513 | static int | |
1514 | fetch (SIM_DESC sd, ea_type *arg, int *val) | |
1515 | { | |
1516 | return fetch_1 (sd, arg, val, 0); | |
1517 | } | |
1518 | ||
1519 | /* Fetch which will be followed by a store to the same location. | |
1520 | The difference being that we don't want to do a post-increment | |
1521 | or post-decrement at this time: we'll do it when we store. */ | |
1522 | ||
1523 | static int | |
1524 | fetch2 (SIM_DESC sd, ea_type *arg, int *val) | |
1525 | { | |
1526 | return fetch_1 (sd, arg, val, 1); | |
1527 | } | |
1528 | ||
1529 | /* Simulate a memory store. | |
1530 | Return 0 for success, -1 for failure. | |
1531 | */ | |
1532 | ||
1533 | static int | |
1534 | store_1 (SIM_DESC sd, ea_type *arg, int n, int twice) | |
1535 | { | |
1536 | int rn = arg->reg; | |
1537 | int abs = arg->literal; | |
1538 | int t; | |
1539 | ||
1540 | switch (arg->type) | |
1541 | { | |
1542 | /* Indexed register plus displacement mode: | |
1543 | ||
1544 | This new family of addressing modes are similar to OP_DISP | |
1545 | (register plus displacement), with two differences: | |
1546 | 1) INDEXB uses only the least significant byte of the register, | |
1547 | INDEXW uses only the least significant word, and | |
1548 | INDEXL uses the entire register (just like OP_DISP). | |
1549 | and | |
1550 | 2) The displacement value in abs is multiplied by two | |
1551 | for SW-sized operations, and by four for SL-size. | |
1552 | ||
1553 | This gives nine possible variations. | |
1554 | */ | |
1555 | ||
1556 | case X (OP_INDEXB, SB): | |
1557 | case X (OP_INDEXB, SW): | |
1558 | case X (OP_INDEXB, SL): | |
1559 | case X (OP_INDEXW, SB): | |
1560 | case X (OP_INDEXW, SW): | |
1561 | case X (OP_INDEXW, SL): | |
1562 | case X (OP_INDEXL, SB): | |
1563 | case X (OP_INDEXL, SW): | |
1564 | case X (OP_INDEXL, SL): | |
1565 | t = GET_L_REG (rn); | |
1566 | switch (OP_KIND (arg->type)) { | |
1567 | case OP_INDEXB: t &= 0xff; break; | |
1568 | case OP_INDEXW: t &= 0xffff; break; | |
1569 | case OP_INDEXL: | |
1570 | default: break; | |
1571 | } | |
1572 | switch (OP_SIZE (arg->type)) { | |
1573 | case SB: | |
1574 | SET_MEMORY_B ((t * 1 + abs) & h8_get_mask (sd), n); | |
1575 | break; | |
1576 | case SW: | |
1577 | SET_MEMORY_W ((t * 2 + abs) & h8_get_mask (sd), n); | |
1578 | break; | |
1579 | case SL: | |
1580 | SET_MEMORY_L ((t * 4 + abs) & h8_get_mask (sd), n); | |
1581 | break; | |
1582 | } | |
1583 | break; | |
1584 | ||
1585 | case X (OP_REG, SB): /* Register direct, byte. */ | |
1586 | SET_B_REG (rn, n); | |
1587 | break; | |
1588 | case X (OP_REG, SW): /* Register direct, word. */ | |
1589 | SET_W_REG (rn, n); | |
1590 | break; | |
1591 | case X (OP_REG, SL): /* Register direct, long. */ | |
1592 | SET_L_REG (rn, n); | |
1593 | break; | |
1594 | ||
1595 | case X (OP_PREDEC, SB): /* Register indirect w/pre-decr, byte. */ | |
1596 | t = GET_L_REG (rn); | |
1597 | if (!twice) | |
1598 | t -= 1; | |
1599 | t &= h8_get_mask (sd); | |
1600 | SET_L_REG (rn, t); | |
1601 | SET_MEMORY_B (t, n); | |
1602 | ||
1603 | break; | |
1604 | case X (OP_PREDEC, SW): /* Register indirect w/pre-decr, word. */ | |
1605 | t = GET_L_REG (rn); | |
1606 | if (!twice) | |
1607 | t -= 2; | |
1608 | t &= h8_get_mask (sd); | |
1609 | SET_L_REG (rn, t); | |
1610 | SET_MEMORY_W (t, n); | |
1611 | break; | |
1612 | ||
1613 | case X (OP_PREDEC, SL): /* Register indirect w/pre-decr, long. */ | |
1614 | t = GET_L_REG (rn); | |
1615 | if (!twice) | |
1616 | t -= 4; | |
1617 | t &= h8_get_mask (sd); | |
1618 | SET_L_REG (rn, t); | |
1619 | SET_MEMORY_L (t, n); | |
1620 | break; | |
1621 | ||
1622 | case X (OP_PREINC, SB): /* Register indirect w/pre-incr, byte. */ | |
1623 | t = GET_L_REG (rn); | |
1624 | if (!twice) | |
1625 | t += 1; | |
1626 | t &= h8_get_mask (sd); | |
1627 | SET_L_REG (rn, t); | |
1628 | SET_MEMORY_B (t, n); | |
1629 | ||
1630 | break; | |
1631 | case X (OP_PREINC, SW): /* Register indirect w/pre-incr, word. */ | |
1632 | t = GET_L_REG (rn); | |
1633 | if (!twice) | |
1634 | t += 2; | |
1635 | t &= h8_get_mask (sd); | |
1636 | SET_L_REG (rn, t); | |
1637 | SET_MEMORY_W (t, n); | |
1638 | break; | |
1639 | ||
1640 | case X (OP_PREINC, SL): /* Register indirect w/pre-incr, long. */ | |
1641 | t = GET_L_REG (rn); | |
1642 | if (!twice) | |
1643 | t += 4; | |
1644 | t &= h8_get_mask (sd); | |
1645 | SET_L_REG (rn, t); | |
1646 | SET_MEMORY_L (t, n); | |
1647 | break; | |
1648 | ||
1649 | case X (OP_POSTDEC, SB): /* Register indirect w/post-decr, byte. */ | |
1650 | t = GET_L_REG (rn) & h8_get_mask (sd); | |
1651 | SET_MEMORY_B (t, n); | |
1652 | SET_L_REG (rn, t - 1); | |
1653 | break; | |
1654 | ||
1655 | case X (OP_POSTDEC, SW): /* Register indirect w/post-decr, word. */ | |
1656 | t = GET_L_REG (rn) & h8_get_mask (sd); | |
1657 | SET_MEMORY_W (t, n); | |
1658 | SET_L_REG (rn, t - 2); | |
1659 | break; | |
1660 | ||
1661 | case X (OP_POSTDEC, SL): /* Register indirect w/post-decr, long. */ | |
1662 | t = GET_L_REG (rn) & h8_get_mask (sd); | |
1663 | SET_MEMORY_L (t, n); | |
1664 | SET_L_REG (rn, t - 4); | |
1665 | break; | |
1666 | ||
1667 | case X (OP_POSTINC, SB): /* Register indirect w/post-incr, byte. */ | |
1668 | t = GET_L_REG (rn) & h8_get_mask (sd); | |
1669 | SET_MEMORY_B (t, n); | |
1670 | SET_L_REG (rn, t + 1); | |
1671 | break; | |
1672 | ||
1673 | case X (OP_POSTINC, SW): /* Register indirect w/post-incr, word. */ | |
1674 | t = GET_L_REG (rn) & h8_get_mask (sd); | |
1675 | SET_MEMORY_W (t, n); | |
1676 | SET_L_REG (rn, t + 2); | |
1677 | break; | |
1678 | ||
1679 | case X (OP_POSTINC, SL): /* Register indirect w/post-incr, long. */ | |
1680 | t = GET_L_REG (rn) & h8_get_mask (sd); | |
1681 | SET_MEMORY_L (t, n); | |
1682 | SET_L_REG (rn, t + 4); | |
1683 | break; | |
1684 | ||
1685 | case X (OP_DISP, SB): /* Register indirect w/displacement, byte. */ | |
1686 | t = GET_L_REG (rn) + abs; | |
1687 | t &= h8_get_mask (sd); | |
1688 | SET_MEMORY_B (t, n); | |
1689 | break; | |
1690 | ||
1691 | case X (OP_DISP, SW): /* Register indirect w/displacement, word. */ | |
1692 | t = GET_L_REG (rn) + abs; | |
1693 | t &= h8_get_mask (sd); | |
1694 | SET_MEMORY_W (t, n); | |
1695 | break; | |
1696 | ||
1697 | case X (OP_DISP, SL): /* Register indirect w/displacement, long. */ | |
1698 | t = GET_L_REG (rn) + abs; | |
1699 | t &= h8_get_mask (sd); | |
1700 | SET_MEMORY_L (t, n); | |
1701 | break; | |
1702 | ||
1703 | ||
1704 | case X (OP_MEM, SB): /* Why isn't this implemented? */ | |
1705 | case X (OP_MEM, SW): /* Why isn't this implemented? */ | |
1706 | case X (OP_MEM, SL): /* Why isn't this implemented? */ | |
1707 | default: | |
1708 | sim_engine_set_run_state (sd, sim_stopped, SIGSEGV); | |
1709 | return -1; | |
1710 | } | |
1711 | return 0; | |
1712 | } | |
1713 | ||
1714 | /* Normal store. */ | |
1715 | ||
1716 | static int | |
1717 | store (SIM_DESC sd, ea_type *arg, int n) | |
1718 | { | |
1719 | return store_1 (sd, arg, n, 0); | |
1720 | } | |
1721 | ||
1722 | /* Store which follows a fetch from the same location. | |
1723 | The difference being that we don't want to do a pre-increment | |
1724 | or pre-decrement at this time: it was already done when we fetched. */ | |
1725 | ||
1726 | static int | |
1727 | store2 (SIM_DESC sd, ea_type *arg, int n) | |
1728 | { | |
1729 | return store_1 (sd, arg, n, 1); | |
1730 | } | |
1731 | ||
1732 | static union | |
1733 | { | |
1734 | short int i; | |
1735 | struct | |
1736 | { | |
1737 | char low; | |
1738 | char high; | |
1739 | } | |
1740 | u; | |
1741 | } littleendian; | |
1742 | ||
1743 | /* Flag to be set whenever a new SIM_DESC object is created. */ | |
1744 | static int init_pointers_needed = 1; | |
1745 | ||
1746 | static void | |
1747 | init_pointers (SIM_DESC sd) | |
1748 | { | |
1749 | if (init_pointers_needed) | |
1750 | { | |
1751 | int i; | |
1752 | ||
1753 | littleendian.i = 1; | |
1754 | ||
1755 | if (h8300smode) | |
1756 | memory_size = H8300S_MSIZE; | |
1757 | else if (h8300hmode) | |
1758 | memory_size = H8300H_MSIZE; | |
1759 | else | |
1760 | memory_size = H8300_MSIZE; | |
1761 | /* `msize' must be a power of two. */ | |
1762 | if ((memory_size & (memory_size - 1)) != 0) | |
1763 | { | |
1764 | (*sim_callback->printf_filtered) | |
1765 | (sim_callback, | |
1766 | "init_pointers: bad memory size %d, defaulting to %d.\n", | |
1767 | memory_size, memory_size = H8300S_MSIZE); | |
1768 | } | |
1769 | ||
1770 | if (h8_get_memory_buf (sd)) | |
1771 | free (h8_get_memory_buf (sd)); | |
1772 | if (h8_get_cache_idx_buf (sd)) | |
1773 | free (h8_get_cache_idx_buf (sd)); | |
1774 | if (h8_get_eightbit_buf (sd)) | |
1775 | free (h8_get_eightbit_buf (sd)); | |
1776 | ||
1777 | h8_set_memory_buf (sd, (unsigned char *) | |
1778 | calloc (sizeof (char), memory_size)); | |
1779 | h8_set_cache_idx_buf (sd, (unsigned short *) | |
1780 | calloc (sizeof (short), memory_size)); | |
1781 | sd->memory_size = memory_size; | |
1782 | h8_set_eightbit_buf (sd, (unsigned char *) calloc (sizeof (char), 256)); | |
1783 | ||
1784 | h8_set_mask (sd, memory_size - 1); | |
1785 | ||
1786 | memset (h8_get_reg_buf (sd), 0, sizeof (((STATE_CPU (sd, 0))->regs))); | |
1787 | ||
1788 | for (i = 0; i < 8; i++) | |
1789 | { | |
1790 | /* FIXME: rewrite using local buffer. */ | |
1791 | unsigned char *p = (unsigned char *) (h8_get_reg_buf (sd) + i); | |
1792 | unsigned char *e = (unsigned char *) (h8_get_reg_buf (sd) + i + 1); | |
1793 | unsigned short *q = (unsigned short *) (h8_get_reg_buf (sd) + i); | |
1794 | unsigned short *u = (unsigned short *) (h8_get_reg_buf (sd) + i + 1); | |
1795 | h8_set_reg (sd, i, 0x00112233); | |
1796 | ||
1797 | while (p < e) | |
1798 | { | |
1799 | if (*p == 0x22) | |
1800 | breg[i] = p; | |
1801 | if (*p == 0x33) | |
1802 | breg[i + 8] = p; | |
1803 | if (*p == 0x11) | |
1804 | breg[i + 16] = p; | |
1805 | if (*p == 0x00) | |
1806 | breg[i + 24] = p; | |
1807 | p++; | |
1808 | } | |
1809 | ||
1810 | wreg[i] = wreg[i + 8] = 0; | |
1811 | while (q < u) | |
1812 | { | |
1813 | if (*q == 0x2233) | |
1814 | { | |
1815 | wreg[i] = q; | |
1816 | } | |
1817 | if (*q == 0x0011) | |
1818 | { | |
1819 | wreg[i + 8] = q; | |
1820 | } | |
1821 | q++; | |
1822 | } | |
1823 | ||
1824 | if (wreg[i] == 0 || wreg[i + 8] == 0) | |
1825 | (*sim_callback->printf_filtered) (sim_callback, | |
1826 | "init_pointers: internal error.\n"); | |
1827 | ||
1828 | h8_set_reg (sd, i, 0); | |
1829 | lreg[i] = h8_get_reg_buf (sd) + i; | |
1830 | } | |
1831 | ||
1832 | /* Note: sim uses pseudo-register ZERO as a zero register. */ | |
1833 | lreg[ZERO_REGNUM] = h8_get_reg_buf (sd) + ZERO_REGNUM; | |
1834 | init_pointers_needed = 0; | |
1835 | ||
1836 | /* Initialize the seg registers. */ | |
1837 | if (!sd->sim_cache) | |
1838 | set_simcache_size (sd, CSIZE); | |
1839 | } | |
1840 | } | |
1841 | ||
1842 | /* Grotty global variable for use by control_c signal handler. */ | |
1843 | static SIM_DESC control_c_sim_desc; | |
1844 | ||
1845 | static void | |
1846 | control_c (int sig) | |
1847 | { | |
1848 | sim_engine_set_run_state (control_c_sim_desc, sim_stopped, SIGINT); | |
1849 | } | |
1850 | ||
1851 | int | |
1852 | sim_stop (SIM_DESC sd) | |
1853 | { | |
1854 | /* FIXME: use a real signal value. */ | |
1855 | sim_engine_set_run_state (sd, sim_stopped, SIGINT); | |
1856 | return 1; | |
1857 | } | |
1858 | ||
1859 | #define OBITOP(name, f, s, op) \ | |
1860 | case O (name, SB): \ | |
1861 | { \ | |
1862 | int m, tmp; \ | |
1863 | \ | |
1864 | if (f) \ | |
1865 | if (fetch (sd, &code->dst, &ea)) \ | |
1866 | goto end; \ | |
1867 | if (fetch (sd, &code->src, &tmp)) \ | |
1868 | goto end; \ | |
1869 | m = 1 << tmp; \ | |
1870 | op; \ | |
1871 | if (s) \ | |
1872 | if (store (sd, &code->dst,ea)) \ | |
1873 | goto end; \ | |
1874 | goto next; \ | |
1875 | } | |
1876 | ||
1877 | void | |
1878 | sim_resume (SIM_DESC sd, int step, int siggnal) | |
1879 | { | |
1880 | static int init1; | |
1881 | int cycles = 0; | |
1882 | int insts = 0; | |
1883 | int tick_start = get_now (); | |
1884 | void (*prev) (); | |
1885 | int poll_count = 0; | |
1886 | int res; | |
1887 | int tmp; | |
1888 | int rd; | |
1889 | int ea; | |
1890 | int bit; | |
1891 | int pc; | |
1892 | int c, nz, v, n, u, h, ui, intMaskBit; | |
1893 | int trace, intMask; | |
1894 | int oldmask; | |
1895 | enum sim_stop reason; | |
1896 | int sigrc; | |
1897 | ||
1898 | init_pointers (sd); | |
1899 | ||
1900 | control_c_sim_desc = sd; | |
1901 | prev = signal (SIGINT, control_c); | |
1902 | ||
1903 | if (step) | |
1904 | { | |
1905 | sim_engine_set_run_state (sd, sim_stopped, SIGTRAP); | |
1906 | } | |
1907 | else | |
1908 | { | |
1909 | sim_engine_set_run_state (sd, sim_running, 0); | |
1910 | } | |
1911 | ||
1912 | pc = h8_get_pc (sd); | |
1913 | ||
1914 | /* The PC should never be odd. */ | |
1915 | if (pc & 0x1) | |
1916 | { | |
1917 | sim_engine_set_run_state (sd, sim_stopped, SIGBUS); | |
1918 | return; | |
1919 | } | |
1920 | ||
1921 | /* Get Status Register (flags). */ | |
9f70f8ec | 1922 | GETSR (sd); |
dc5c3759 MS |
1923 | |
1924 | if (h8300smode) /* Get exr. */ | |
1925 | { | |
1926 | trace = (h8_get_exr (sd) >> 7) & 1; | |
1927 | intMask = h8_get_exr (sd) & 7; | |
1928 | } | |
1929 | ||
1930 | oldmask = h8_get_mask (sd); | |
1931 | if (!h8300hmode) | |
1932 | h8_set_mask (sd, 0xffff); | |
1933 | do | |
1934 | { | |
1935 | unsigned short cidx; | |
1936 | decoded_inst *code; | |
1937 | ||
1938 | top: | |
1939 | cidx = h8_get_cache_idx (sd, pc); | |
1940 | if (cidx == (unsigned short) -1 || | |
1941 | cidx >= sd->sim_cache_size) | |
1942 | goto illegal; | |
1943 | ||
1944 | code = sd->sim_cache + cidx; | |
1945 | ||
1946 | #if ADEBUG | |
1947 | if (debug) | |
1948 | { | |
1949 | printf ("%x %d %s\n", pc, code->opcode, | |
1950 | code->op ? code->op->name : "**"); | |
1951 | } | |
1952 | h8_increment_stats (sd, code->opcode); | |
1953 | #endif | |
1954 | ||
1955 | if (code->opcode) | |
1956 | { | |
1957 | cycles += code->cycles; | |
1958 | insts++; | |
1959 | } | |
1960 | ||
1961 | switch (code->opcode) | |
1962 | { | |
1963 | case 0: | |
1964 | /* | |
1965 | * This opcode is a fake for when we get to an | |
1966 | * instruction which hasnt been compiled | |
1967 | */ | |
1968 | compile (sd, pc); | |
1969 | goto top; | |
1970 | break; | |
1971 | ||
1972 | case O (O_MOVAB, SL): | |
1973 | case O (O_MOVAW, SL): | |
1974 | case O (O_MOVAL, SL): | |
1975 | /* 1) Evaluate 2nd argument (dst). | |
1976 | 2) Mask / zero extend according to whether 1st argument (src) | |
1977 | is INDEXB, INDEXW, or INDEXL. | |
1978 | 3) Left-shift the result by 0, 1 or 2, according to size of mova | |
1979 | (mova/b, mova/w, mova/l). | |
1980 | 4) Add literal value of 1st argument (src). | |
1981 | 5) Store result in 3rd argument (op3). | |
1982 | ||
1983 | */ | |
1984 | if (fetch (sd, &code->dst, &ea)) | |
1985 | goto end; | |
1986 | ||
1987 | switch (OP_KIND (code->src.type)) { | |
1988 | case OP_INDEXB: ea = ea & 0xff; break; | |
1989 | case OP_INDEXW: ea = ea & 0xffff; break; | |
1990 | case OP_INDEXL: break; | |
1991 | default: goto illegal; | |
1992 | } | |
1993 | ||
1994 | switch (code->opcode) { | |
1995 | case O (O_MOVAB, SL): break; | |
1996 | case O (O_MOVAW, SL): ea = ea << 1; break; | |
1997 | case O (O_MOVAL, SL): ea = ea << 2; break; | |
1998 | default: goto illegal; | |
1999 | } | |
2000 | ||
2001 | ea = ea + code->src.literal; | |
2002 | ||
2003 | if (store (sd, &code->op3, ea)) | |
2004 | goto end; | |
2005 | ||
2006 | goto next; | |
2007 | ||
2008 | case O (O_SUBX, SB): /* subx, extended sub */ | |
2009 | if (fetch2 (sd, &code->dst, &rd)) | |
2010 | goto end; | |
2011 | if (fetch (sd, &code->src, &ea)) | |
2012 | goto end; | |
2013 | ea = -(ea + C); | |
2014 | res = rd + ea; | |
2015 | goto alu8; | |
2016 | ||
2017 | case O (O_SUBX, SW): /* subx, extended sub */ | |
2018 | if (fetch2 (sd, &code->dst, &rd)) | |
2019 | goto end; | |
2020 | if (fetch (sd, &code->src, &ea)) | |
2021 | goto end; | |
2022 | ea = -(ea + C); | |
2023 | res = rd + ea; | |
2024 | goto alu16; | |
2025 | ||
2026 | case O (O_SUBX, SL): /* subx, extended sub */ | |
2027 | if (fetch2 (sd, &code->dst, &rd)) | |
2028 | goto end; | |
2029 | if (fetch (sd, &code->src, &ea)) | |
2030 | goto end; | |
2031 | ea = -(ea + C); | |
2032 | res = rd + ea; | |
2033 | goto alu32; | |
2034 | ||
2035 | case O (O_ADDX, SB): /* addx, extended add */ | |
2036 | if (fetch2 (sd, &code->dst, &rd)) | |
2037 | goto end; | |
2038 | if (fetch (sd, &code->src, &ea)) | |
2039 | goto end; | |
2040 | ea = ea + C; | |
2041 | res = rd + ea; | |
2042 | goto alu8; | |
2043 | ||
2044 | case O (O_ADDX, SW): /* addx, extended add */ | |
2045 | if (fetch2 (sd, &code->dst, &rd)) | |
2046 | goto end; | |
2047 | if (fetch (sd, &code->src, &ea)) | |
2048 | goto end; | |
2049 | ea = ea + C; | |
2050 | res = rd + ea; | |
2051 | goto alu16; | |
2052 | ||
2053 | case O (O_ADDX, SL): /* addx, extended add */ | |
2054 | if (fetch2 (sd, &code->dst, &rd)) | |
2055 | goto end; | |
2056 | if (fetch (sd, &code->src, &ea)) | |
2057 | goto end; | |
2058 | ea = ea + C; | |
2059 | res = rd + ea; | |
2060 | goto alu32; | |
2061 | ||
2062 | case O (O_SUB, SB): /* sub.b */ | |
2063 | /* Fetch rd and ea. */ | |
2064 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2065 | goto end; | |
2066 | ea = -ea; | |
2067 | res = rd + ea; | |
2068 | goto alu8; | |
2069 | ||
2070 | case O (O_SUB, SW): /* sub.w */ | |
2071 | /* Fetch rd and ea. */ | |
2072 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2073 | goto end; | |
2074 | ea = -ea; | |
2075 | res = rd + ea; | |
2076 | goto alu16; | |
2077 | ||
2078 | case O (O_SUB, SL): /* sub.l */ | |
2079 | /* Fetch rd and ea. */ | |
2080 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2081 | goto end; | |
2082 | ea = -ea; | |
2083 | res = rd + ea; | |
2084 | goto alu32; | |
2085 | ||
2086 | case O (O_NEG, SB): /* neg.b */ | |
2087 | /* Fetch ea. */ | |
2088 | if (fetch2 (sd, &code->src, &ea)) | |
2089 | goto end; | |
2090 | ea = -ea; | |
2091 | rd = 0; | |
2092 | res = rd + ea; | |
2093 | goto alu8; | |
2094 | ||
2095 | case O (O_NEG, SW): /* neg.w */ | |
2096 | /* Fetch ea. */ | |
2097 | if (fetch2 (sd, &code->src, &ea)) | |
2098 | goto end; | |
2099 | ea = -ea; | |
2100 | rd = 0; | |
2101 | res = rd + ea; | |
2102 | goto alu16; | |
2103 | ||
2104 | case O (O_NEG, SL): /* neg.l */ | |
2105 | /* Fetch ea. */ | |
2106 | if (fetch2 (sd, &code->src, &ea)) | |
2107 | goto end; | |
2108 | ea = -ea; | |
2109 | rd = 0; | |
2110 | res = rd + ea; | |
2111 | goto alu32; | |
2112 | ||
2113 | case O (O_ADD, SB): /* add.b */ | |
2114 | if (fetch2 (sd, &code->dst, &rd)) | |
2115 | goto end; | |
2116 | if (fetch (sd, &code->src, &ea)) | |
2117 | goto end; | |
2118 | res = rd + ea; | |
2119 | goto alu8; | |
2120 | ||
2121 | case O (O_ADD, SW): /* add.w */ | |
2122 | if (fetch2 (sd, &code->dst, &rd)) | |
2123 | goto end; | |
2124 | if (fetch (sd, &code->src, &ea)) | |
2125 | goto end; | |
2126 | res = rd + ea; | |
2127 | goto alu16; | |
2128 | ||
2129 | case O (O_ADD, SL): /* add.l */ | |
2130 | if (fetch2 (sd, &code->dst, &rd)) | |
2131 | goto end; | |
2132 | if (fetch (sd, &code->src, &ea)) | |
2133 | goto end; | |
2134 | res = rd + ea; | |
2135 | goto alu32; | |
2136 | ||
2137 | case O (O_AND, SB): /* and.b */ | |
2138 | /* Fetch rd and ea. */ | |
2139 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2140 | goto end; | |
2141 | res = rd & ea; | |
2142 | goto log8; | |
2143 | ||
2144 | case O (O_AND, SW): /* and.w */ | |
2145 | /* Fetch rd and ea. */ | |
2146 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2147 | goto end; | |
2148 | res = rd & ea; | |
2149 | goto log16; | |
2150 | ||
2151 | case O (O_AND, SL): /* and.l */ | |
2152 | /* Fetch rd and ea. */ | |
2153 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2154 | goto end; | |
2155 | res = rd & ea; | |
2156 | goto log32; | |
2157 | ||
2158 | case O (O_OR, SB): /* or.b */ | |
2159 | /* Fetch rd and ea. */ | |
2160 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2161 | goto end; | |
2162 | res = rd | ea; | |
2163 | goto log8; | |
2164 | ||
2165 | case O (O_OR, SW): /* or.w */ | |
2166 | /* Fetch rd and ea. */ | |
2167 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2168 | goto end; | |
2169 | res = rd | ea; | |
2170 | goto log16; | |
2171 | ||
2172 | case O (O_OR, SL): /* or.l */ | |
2173 | /* Fetch rd and ea. */ | |
2174 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2175 | goto end; | |
2176 | res = rd | ea; | |
2177 | goto log32; | |
2178 | ||
2179 | case O (O_XOR, SB): /* xor.b */ | |
2180 | /* Fetch rd and ea. */ | |
2181 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2182 | goto end; | |
2183 | res = rd ^ ea; | |
2184 | goto log8; | |
2185 | ||
2186 | case O (O_XOR, SW): /* xor.w */ | |
2187 | /* Fetch rd and ea. */ | |
2188 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2189 | goto end; | |
2190 | res = rd ^ ea; | |
2191 | goto log16; | |
2192 | ||
2193 | case O (O_XOR, SL): /* xor.l */ | |
2194 | /* Fetch rd and ea. */ | |
2195 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2196 | goto end; | |
2197 | res = rd ^ ea; | |
2198 | goto log32; | |
2199 | ||
2200 | case O (O_MOV, SB): | |
2201 | if (fetch (sd, &code->src, &res)) | |
2202 | goto end; | |
2203 | if (store (sd, &code->dst, res)) | |
2204 | goto end; | |
2205 | goto just_flags_log8; | |
2206 | case O (O_MOV, SW): | |
2207 | if (fetch (sd, &code->src, &res)) | |
2208 | goto end; | |
2209 | if (store (sd, &code->dst, res)) | |
2210 | goto end; | |
2211 | goto just_flags_log16; | |
2212 | case O (O_MOV, SL): | |
2213 | if (fetch (sd, &code->src, &res)) | |
2214 | goto end; | |
2215 | if (store (sd, &code->dst, res)) | |
2216 | goto end; | |
2217 | goto just_flags_log32; | |
2218 | ||
9f70f8ec | 2219 | case O (O_MOVMD, SB): /* movmd.b */ |
dc5c3759 MS |
2220 | ea = GET_W_REG (4); |
2221 | if (ea == 0) | |
2222 | ea = 0x10000; | |
2223 | ||
2224 | while (ea--) | |
2225 | { | |
2226 | rd = GET_MEMORY_B (GET_L_REG (5)); | |
2227 | SET_MEMORY_B (GET_L_REG (6), rd); | |
2228 | SET_L_REG (5, GET_L_REG (5) + 1); | |
2229 | SET_L_REG (6, GET_L_REG (6) + 1); | |
2230 | SET_W_REG (4, ea); | |
2231 | } | |
2232 | goto next; | |
2233 | ||
9f70f8ec | 2234 | case O (O_MOVMD, SW): /* movmd.w */ |
dc5c3759 MS |
2235 | ea = GET_W_REG (4); |
2236 | if (ea == 0) | |
2237 | ea = 0x10000; | |
2238 | ||
2239 | while (ea--) | |
2240 | { | |
2241 | rd = GET_MEMORY_W (GET_L_REG (5)); | |
2242 | SET_MEMORY_W (GET_L_REG (6), rd); | |
2243 | SET_L_REG (5, GET_L_REG (5) + 2); | |
2244 | SET_L_REG (6, GET_L_REG (6) + 2); | |
2245 | SET_W_REG (4, ea); | |
2246 | } | |
2247 | goto next; | |
2248 | ||
9f70f8ec | 2249 | case O (O_MOVMD, SL): /* movmd.l */ |
dc5c3759 MS |
2250 | ea = GET_W_REG (4); |
2251 | if (ea == 0) | |
2252 | ea = 0x10000; | |
2253 | ||
2254 | while (ea--) | |
2255 | { | |
2256 | rd = GET_MEMORY_L (GET_L_REG (5)); | |
2257 | SET_MEMORY_L (GET_L_REG (6), rd); | |
2258 | SET_L_REG (5, GET_L_REG (5) + 4); | |
2259 | SET_L_REG (6, GET_L_REG (6) + 4); | |
2260 | SET_W_REG (4, ea); | |
2261 | } | |
2262 | goto next; | |
2263 | ||
2264 | case O (O_MOVSD, SB): /* movsd.b */ | |
2265 | /* This instruction implements strncpy, with a conditional branch. | |
2266 | r4 contains n, r5 contains src, and r6 contains dst. | |
2267 | The 16-bit displacement operand is added to the pc | |
2268 | if and only if the end of string is reached before | |
2269 | n bytes are transferred. */ | |
2270 | ||
2271 | ea = GET_L_REG (4) & 0xffff; | |
2272 | if (ea == 0) | |
2273 | ea = 0x10000; | |
2274 | ||
2275 | while (ea--) | |
2276 | { | |
2277 | rd = GET_MEMORY_B (GET_L_REG (5)); | |
2278 | SET_MEMORY_B (GET_L_REG (6), rd); | |
2279 | SET_L_REG (5, GET_L_REG (5) + 1); | |
2280 | SET_L_REG (6, GET_L_REG (6) + 1); | |
2281 | SET_W_REG (4, ea); | |
2282 | if (rd == 0) | |
2283 | goto condtrue; | |
2284 | } | |
2285 | goto next; | |
2286 | ||
2287 | case O (O_EEPMOV, SB): /* eepmov.b */ | |
2288 | case O (O_EEPMOV, SW): /* eepmov.w */ | |
2289 | if (h8300hmode || h8300smode) | |
2290 | { | |
2291 | register unsigned char *_src, *_dst; | |
2292 | unsigned int count = ((code->opcode == O (O_EEPMOV, SW)) | |
2293 | ? h8_get_reg (sd, R4_REGNUM) & 0xffff | |
2294 | : h8_get_reg (sd, R4_REGNUM) & 0xff); | |
2295 | ||
2296 | _src = (h8_get_reg (sd, R5_REGNUM) < memory_size | |
2297 | ? h8_get_memory_buf (sd) + h8_get_reg (sd, R5_REGNUM) | |
2298 | : h8_get_eightbit_buf (sd) + | |
2299 | (h8_get_reg (sd, R5_REGNUM) & 0xff)); | |
2300 | if ((_src + count) >= (h8_get_memory_buf (sd) + memory_size)) | |
2301 | { | |
2302 | if ((_src + count) >= (h8_get_eightbit_buf (sd) + 0x100)) | |
2303 | goto illegal; | |
2304 | } | |
2305 | _dst = (h8_get_reg (sd, R6_REGNUM) < memory_size | |
2306 | ? h8_get_memory_buf (sd) + h8_get_reg (sd, R6_REGNUM) | |
2307 | : h8_get_eightbit_buf (sd) + | |
2308 | (h8_get_reg (sd, R6_REGNUM) & 0xff)); | |
2309 | ||
2310 | if ((_dst + count) >= (h8_get_memory_buf (sd) + memory_size)) | |
2311 | { | |
2312 | if ((_dst + count) >= (h8_get_eightbit_buf (sd) + 0x100)) | |
2313 | goto illegal; | |
2314 | } | |
2315 | memcpy (_dst, _src, count); | |
2316 | ||
2317 | h8_set_reg (sd, R5_REGNUM, h8_get_reg (sd, R5_REGNUM) + count); | |
2318 | h8_set_reg (sd, R6_REGNUM, h8_get_reg (sd, R6_REGNUM) + count); | |
2319 | h8_set_reg (sd, R4_REGNUM, h8_get_reg (sd, R4_REGNUM) & | |
2320 | ((code->opcode == O (O_EEPMOV, SW)) | |
2321 | ? (~0xffff) : (~0xff))); | |
2322 | cycles += 2 * count; | |
2323 | goto next; | |
2324 | } | |
2325 | goto illegal; | |
2326 | ||
2327 | case O (O_ADDS, SL): /* adds (.l) */ | |
2328 | /* FIXME fetch. | |
2329 | * This insn only uses register operands, but still | |
2330 | * it would be cleaner to use fetch and store... */ | |
2331 | SET_L_REG (code->dst.reg, | |
2332 | GET_L_REG (code->dst.reg) | |
2333 | + code->src.literal); | |
2334 | ||
2335 | goto next; | |
2336 | ||
2337 | case O (O_SUBS, SL): /* subs (.l) */ | |
2338 | /* FIXME fetch. | |
2339 | * This insn only uses register operands, but still | |
2340 | * it would be cleaner to use fetch and store... */ | |
2341 | SET_L_REG (code->dst.reg, | |
2342 | GET_L_REG (code->dst.reg) | |
2343 | - code->src.literal); | |
2344 | goto next; | |
2345 | ||
2346 | case O (O_CMP, SB): /* cmp.b */ | |
2347 | if (fetch (sd, &code->dst, &rd)) | |
2348 | goto end; | |
2349 | if (fetch (sd, &code->src, &ea)) | |
2350 | goto end; | |
2351 | ea = -ea; | |
2352 | res = rd + ea; | |
2353 | goto just_flags_alu8; | |
2354 | ||
2355 | case O (O_CMP, SW): /* cmp.w */ | |
2356 | if (fetch (sd, &code->dst, &rd)) | |
2357 | goto end; | |
2358 | if (fetch (sd, &code->src, &ea)) | |
2359 | goto end; | |
2360 | ea = -ea; | |
2361 | res = rd + ea; | |
2362 | goto just_flags_alu16; | |
2363 | ||
2364 | case O (O_CMP, SL): /* cmp.l */ | |
2365 | if (fetch (sd, &code->dst, &rd)) | |
2366 | goto end; | |
2367 | if (fetch (sd, &code->src, &ea)) | |
2368 | goto end; | |
2369 | ea = -ea; | |
2370 | res = rd + ea; | |
2371 | goto just_flags_alu32; | |
2372 | ||
2373 | case O (O_DEC, SB): /* dec.b */ | |
2374 | /* FIXME fetch. | |
2375 | * This insn only uses register operands, but still | |
2376 | * it would be cleaner to use fetch and store... */ | |
2377 | rd = GET_B_REG (code->src.reg); | |
2378 | ea = -1; | |
2379 | res = rd + ea; | |
2380 | SET_B_REG (code->src.reg, res); | |
2381 | goto just_flags_inc8; | |
2382 | ||
2383 | case O (O_DEC, SW): /* dec.w */ | |
2384 | /* FIXME fetch. | |
2385 | * This insn only uses register operands, but still | |
2386 | * it would be cleaner to use fetch and store... */ | |
2387 | rd = GET_W_REG (code->dst.reg); | |
2388 | ea = -code->src.literal; | |
2389 | res = rd + ea; | |
2390 | SET_W_REG (code->dst.reg, res); | |
2391 | goto just_flags_inc16; | |
2392 | ||
2393 | case O (O_DEC, SL): /* dec.l */ | |
2394 | /* FIXME fetch. | |
2395 | * This insn only uses register operands, but still | |
2396 | * it would be cleaner to use fetch and store... */ | |
2397 | rd = GET_L_REG (code->dst.reg); | |
2398 | ea = -code->src.literal; | |
2399 | res = rd + ea; | |
2400 | SET_L_REG (code->dst.reg, res); | |
2401 | goto just_flags_inc32; | |
2402 | ||
2403 | case O (O_INC, SB): /* inc.b */ | |
2404 | /* FIXME fetch. | |
2405 | * This insn only uses register operands, but still | |
2406 | * it would be cleaner to use fetch and store... */ | |
2407 | rd = GET_B_REG (code->src.reg); | |
2408 | ea = 1; | |
2409 | res = rd + ea; | |
2410 | SET_B_REG (code->src.reg, res); | |
2411 | goto just_flags_inc8; | |
2412 | ||
2413 | case O (O_INC, SW): /* inc.w */ | |
2414 | /* FIXME fetch. | |
2415 | * This insn only uses register operands, but still | |
2416 | * it would be cleaner to use fetch and store... */ | |
2417 | rd = GET_W_REG (code->dst.reg); | |
2418 | ea = code->src.literal; | |
2419 | res = rd + ea; | |
2420 | SET_W_REG (code->dst.reg, res); | |
2421 | goto just_flags_inc16; | |
2422 | ||
2423 | case O (O_INC, SL): /* inc.l */ | |
2424 | /* FIXME fetch. | |
2425 | * This insn only uses register operands, but still | |
2426 | * it would be cleaner to use fetch and store... */ | |
2427 | rd = GET_L_REG (code->dst.reg); | |
2428 | ea = code->src.literal; | |
2429 | res = rd + ea; | |
2430 | SET_L_REG (code->dst.reg, res); | |
2431 | goto just_flags_inc32; | |
2432 | ||
2433 | case O (O_LDC, SB): /* ldc.b */ | |
2434 | if (fetch (sd, &code->src, &res)) | |
2435 | goto end; | |
2436 | goto setc; | |
2437 | ||
2438 | case O (O_LDC, SW): /* ldc.w */ | |
2439 | if (fetch (sd, &code->src, &res)) | |
2440 | goto end; | |
2441 | ||
2442 | /* Word operand, value from MSB, must be shifted. */ | |
2443 | res >>= 8; | |
2444 | goto setc; | |
2445 | ||
2446 | case O (O_LDC, SL): /* ldc.l */ | |
2447 | if (fetch (sd, &code->src, &res)) | |
2448 | goto end; | |
2449 | switch (code->dst.type) { | |
2450 | case X (OP_SBR, SL): | |
2451 | h8_set_sbr (sd, res); | |
2452 | break; | |
2453 | case X (OP_VBR, SL): | |
2454 | h8_set_vbr (sd, res); | |
2455 | break; | |
2456 | default: | |
2457 | goto illegal; | |
2458 | } | |
2459 | goto next; | |
2460 | ||
2461 | case O (O_STC, SW): /* stc.w */ | |
2462 | case O (O_STC, SB): /* stc.b */ | |
2463 | if (code->src.type == X (OP_CCR, SB)) | |
2464 | { | |
2465 | BUILDSR (sd); | |
2466 | res = h8_get_ccr (sd); | |
2467 | } | |
2468 | else if (code->src.type == X (OP_EXR, SB) && h8300smode) | |
2469 | { | |
2470 | if (h8300smode) | |
2471 | h8_set_exr (sd, (trace << 7) | intMask); | |
2472 | res = h8_get_exr (sd); | |
2473 | } | |
2474 | else | |
2475 | goto illegal; | |
2476 | ||
2477 | /* Word operand, value to MSB, must be shifted. */ | |
2478 | if (code->opcode == X (O_STC, SW)) | |
2479 | res <<= 8; | |
2480 | if (store (sd, &code->dst, res)) | |
2481 | goto end; | |
2482 | goto next; | |
2483 | case O (O_STC, SL): /* stc.l */ | |
2484 | switch (code->src.type) { | |
2485 | case X (OP_SBR, SL): | |
2486 | res = h8_get_sbr (sd); | |
2487 | break; | |
2488 | case X (OP_VBR, SL): | |
2489 | res = h8_get_vbr (sd); | |
2490 | break; | |
2491 | default: | |
2492 | goto illegal; | |
2493 | } | |
2494 | if (store (sd, &code->dst, res)) | |
2495 | goto end; | |
2496 | goto next; | |
2497 | ||
2498 | case O (O_ANDC, SB): /* andc.b */ | |
2499 | if (code->dst.type == X (OP_CCR, SB)) | |
2500 | { | |
2501 | BUILDSR (sd); | |
2502 | rd = h8_get_ccr (sd); | |
2503 | } | |
2504 | else if (code->dst.type == X (OP_EXR, SB) && h8300smode) | |
2505 | { | |
2506 | if (h8300smode) | |
2507 | h8_set_exr (sd, (trace << 7) | intMask); | |
2508 | res = h8_get_exr (sd); | |
2509 | } | |
2510 | else | |
2511 | goto illegal; | |
2512 | ea = code->src.literal; | |
2513 | res = rd & ea; | |
2514 | goto setc; | |
2515 | ||
2516 | case O (O_ORC, SB): /* orc.b */ | |
2517 | if (code->dst.type == X (OP_CCR, SB)) | |
2518 | { | |
2519 | BUILDSR (sd); | |
2520 | rd = h8_get_ccr (sd); | |
2521 | } | |
2522 | else if (code->dst.type == X (OP_EXR, SB) && h8300smode) | |
2523 | { | |
2524 | if (h8300smode) | |
2525 | h8_set_exr (sd, (trace << 7) | intMask); | |
2526 | rd = h8_get_exr (sd); | |
2527 | } | |
2528 | else | |
2529 | goto illegal; | |
2530 | ea = code->src.literal; | |
2531 | res = rd | ea; | |
2532 | goto setc; | |
2533 | ||
2534 | case O (O_XORC, SB): /* xorc.b */ | |
2535 | if (code->dst.type == X (OP_CCR, SB)) | |
2536 | { | |
2537 | BUILDSR (sd); | |
2538 | rd = h8_get_ccr (sd); | |
2539 | } | |
2540 | else if (code->dst.type == X (OP_EXR, SB) && h8300smode) | |
2541 | { | |
2542 | if (h8300smode) | |
2543 | h8_set_exr (sd, (trace << 7) | intMask); | |
2544 | rd = h8_get_exr (sd); | |
2545 | } | |
2546 | else | |
2547 | goto illegal; | |
2548 | ea = code->src.literal; | |
2549 | res = rd ^ ea; | |
2550 | goto setc; | |
2551 | ||
2552 | case O (O_BRAS, SB): /* bra/s */ | |
2553 | /* This is basically an ordinary branch, with a delay slot. */ | |
2554 | if (fetch (sd, &code->src, &res)) | |
2555 | goto end; | |
2556 | ||
2557 | if ((res & 1) == 0) | |
2558 | goto illegal; | |
2559 | ||
2560 | res -= 1; | |
2561 | ||
2562 | /* Execution continues at next instruction, but | |
2563 | delayed_branch is set up for next cycle. */ | |
2564 | h8_set_delayed_branch (sd, code->next_pc + res); | |
2565 | pc = code->next_pc; | |
2566 | goto end; | |
2567 | ||
2568 | case O (O_BRAB, SB): /* bra rd.b */ | |
2569 | case O (O_BRAW, SW): /* bra rd.w */ | |
2570 | case O (O_BRAL, SL): /* bra erd.l */ | |
2571 | if (fetch (sd, &code->src, &rd)) | |
2572 | goto end; | |
2573 | switch (OP_SIZE (code->opcode)) { | |
2574 | case SB: rd &= 0xff; break; | |
2575 | case SW: rd &= 0xffff; break; | |
2576 | case SL: rd &= 0xffffffff; break; | |
2577 | } | |
2578 | pc = code->next_pc + rd; | |
2579 | goto end; | |
2580 | ||
2581 | case O (O_BRABC, SB): /* bra/bc, branch if bit clear */ | |
2582 | case O (O_BRABS, SB): /* bra/bs, branch if bit set */ | |
2583 | case O (O_BSRBC, SB): /* bsr/bc, call if bit clear */ | |
2584 | case O (O_BSRBS, SB): /* bsr/bs, call if bit set */ | |
2585 | if (fetch (sd, &code->dst, &rd) || | |
2586 | fetch (sd, &code->src, &bit)) | |
2587 | goto end; | |
2588 | ||
2589 | if (code->opcode == O (O_BRABC, SB) || /* branch if clear */ | |
2590 | code->opcode == O (O_BSRBC, SB)) /* call if clear */ | |
2591 | { | |
2592 | if ((rd & (1 << bit))) /* no branch */ | |
2593 | goto next; | |
2594 | } | |
2595 | else /* branch/call if set */ | |
2596 | { | |
2597 | if (!(rd & (1 << bit))) /* no branch */ | |
2598 | goto next; | |
2599 | } | |
2600 | ||
2601 | if (fetch (sd, &code->op3, &res)) /* branch */ | |
2602 | goto end; | |
2603 | pc = code->next_pc + res; | |
2604 | ||
2605 | if (code->opcode == O (O_BRABC, SB) || | |
2606 | code->opcode == O (O_BRABS, SB)) /* branch */ | |
2607 | goto end; | |
2608 | else /* call */ | |
2609 | goto call; | |
2610 | ||
2611 | case O (O_BRA, SN): | |
2612 | case O (O_BRA, SL): | |
2613 | case O (O_BRA, SW): | |
2614 | case O (O_BRA, SB): /* bra, branch always */ | |
2615 | if (1) | |
2616 | goto condtrue; | |
2617 | goto next; | |
2618 | ||
2619 | case O (O_BRN, SB): /* brn, ;-/ branch never? */ | |
2620 | if (0) | |
2621 | goto condtrue; | |
2622 | goto next; | |
2623 | ||
2624 | case O (O_BHI, SB): /* bhi */ | |
2625 | if ((C || Z) == 0) | |
2626 | goto condtrue; | |
2627 | goto next; | |
2628 | ||
2629 | ||
2630 | case O (O_BLS, SB): /* bls */ | |
2631 | if ((C || Z)) | |
2632 | goto condtrue; | |
2633 | goto next; | |
2634 | ||
2635 | case O (O_BCS, SB): /* bcs, branch if carry set */ | |
2636 | if ((C == 1)) | |
2637 | goto condtrue; | |
2638 | goto next; | |
2639 | ||
2640 | case O (O_BCC, SB): /* bcc, branch if carry clear */ | |
2641 | if ((C == 0)) | |
2642 | goto condtrue; | |
2643 | goto next; | |
2644 | ||
2645 | case O (O_BEQ, SB): /* beq, branch if zero set */ | |
2646 | if (Z) | |
2647 | goto condtrue; | |
2648 | goto next; | |
2649 | case O (O_BGT, SB): /* bgt */ | |
2650 | if (((Z || (N ^ V)) == 0)) | |
2651 | goto condtrue; | |
2652 | goto next; | |
2653 | ||
2654 | case O (O_BLE, SB): /* ble */ | |
2655 | if (((Z || (N ^ V)) == 1)) | |
2656 | goto condtrue; | |
2657 | goto next; | |
2658 | ||
2659 | case O (O_BGE, SB): /* bge */ | |
2660 | if ((N ^ V) == 0) | |
2661 | goto condtrue; | |
2662 | goto next; | |
2663 | case O (O_BLT, SB): /* blt */ | |
2664 | if ((N ^ V)) | |
2665 | goto condtrue; | |
2666 | goto next; | |
2667 | case O (O_BMI, SB): /* bmi */ | |
2668 | if ((N)) | |
2669 | goto condtrue; | |
2670 | goto next; | |
2671 | case O (O_BNE, SB): /* bne, branch if zero clear */ | |
2672 | if ((Z == 0)) | |
2673 | goto condtrue; | |
2674 | goto next; | |
2675 | ||
2676 | case O (O_BPL, SB): /* bpl */ | |
2677 | if (N == 0) | |
2678 | goto condtrue; | |
2679 | goto next; | |
2680 | case O (O_BVC, SB): /* bvc */ | |
2681 | if ((V == 0)) | |
2682 | goto condtrue; | |
2683 | goto next; | |
2684 | case O (O_BVS, SB): /* bvs */ | |
2685 | if ((V == 1)) | |
2686 | goto condtrue; | |
2687 | goto next; | |
2688 | ||
2689 | /* Trap for Command Line setup. */ | |
2690 | case O (O_SYS_CMDLINE, SB): | |
2691 | { | |
2692 | int i = 0; /* Loop counter. */ | |
2693 | int j = 0; /* Loop counter. */ | |
2694 | int ind_arg_len = 0; /* Length of each argument. */ | |
2695 | int no_of_args = 0; /* The no. or cmdline args. */ | |
2696 | int current_location = 0; /* Location of string. */ | |
2697 | int old_sp = 0; /* The Initial Stack Pointer. */ | |
2698 | int no_of_slots = 0; /* No. of slots required on the stack | |
2699 | for storing cmdline args. */ | |
2700 | int sp_move = 0; /* No. of locations by which the stack needs | |
2701 | to grow. */ | |
2702 | int new_sp = 0; /* The final stack pointer location passed | |
2703 | back. */ | |
2704 | int *argv_ptrs; /* Pointers of argv strings to be stored. */ | |
2705 | int argv_ptrs_location = 0; /* Location of pointers to cmdline | |
2706 | args on the stack. */ | |
2707 | int char_ptr_size = 0; /* Size of a character pointer on | |
2708 | target machine. */ | |
2709 | int addr_cmdline = 0; /* Memory location where cmdline has | |
2710 | to be stored. */ | |
2711 | int size_cmdline = 0; /* Size of cmdline. */ | |
2712 | ||
2713 | /* Set the address of 256 free locations where command line is | |
2714 | stored. */ | |
2715 | addr_cmdline = cmdline_location(); | |
2716 | h8_set_reg (sd, 0, addr_cmdline); | |
2717 | ||
2718 | /* Counting the no. of commandline arguments. */ | |
2719 | for (i = 0; h8_get_cmdline_arg (sd, i) != NULL; i++) | |
2720 | continue; | |
2721 | ||
2722 | /* No. of arguments in the command line. */ | |
2723 | no_of_args = i; | |
2724 | ||
2725 | /* Current location is just a temporary variable,which we are | |
2726 | setting to the point to the start of our commandline string. */ | |
2727 | current_location = addr_cmdline; | |
2728 | ||
2729 | /* Allocating space for storing pointers of the command line | |
2730 | arguments. */ | |
2731 | argv_ptrs = (int *) malloc (sizeof (int) * no_of_args); | |
2732 | ||
2733 | /* Setting char_ptr_size to the sizeof (char *) on the different | |
2734 | architectures. */ | |
2735 | if (h8300hmode || h8300smode) | |
2736 | { | |
2737 | char_ptr_size = 4; | |
2738 | } | |
2739 | else | |
2740 | { | |
2741 | char_ptr_size = 2; | |
2742 | } | |
2743 | ||
2744 | for (i = 0; i < no_of_args; i++) | |
2745 | { | |
2746 | ind_arg_len = 0; | |
2747 | ||
2748 | /* The size of the commandline argument. */ | |
2749 | ind_arg_len = strlen (h8_get_cmdline_arg (sd, i) + 1); | |
2750 | ||
2751 | /* The total size of the command line string. */ | |
2752 | size_cmdline += ind_arg_len; | |
2753 | ||
2754 | /* As we have only 256 bytes, we need to provide a graceful | |
2755 | exit. Anyways, a program using command line arguments | |
2756 | where we cannot store all the command line arguments | |
2757 | given may behave unpredictably. */ | |
2758 | if (size_cmdline >= 256) | |
2759 | { | |
2760 | h8_set_reg (sd, 0, 0); | |
2761 | goto next; | |
2762 | } | |
2763 | else | |
2764 | { | |
2765 | /* current_location points to the memory where the next | |
2766 | commandline argument is stored. */ | |
2767 | argv_ptrs[i] = current_location; | |
2768 | for (j = 0; j < ind_arg_len; j++) | |
2769 | { | |
2770 | SET_MEMORY_B ((current_location + | |
2771 | (sizeof (char) * j)), | |
2772 | *(h8_get_cmdline_arg (sd, i) + | |
2773 | sizeof (char) * j)); | |
2774 | } | |
2775 | ||
2776 | /* Setting current_location to the starting of next | |
2777 | argument. */ | |
2778 | current_location += ind_arg_len; | |
2779 | } | |
2780 | } | |
2781 | ||
2782 | /* This is the original position of the stack pointer. */ | |
2783 | old_sp = h8_get_reg (sd, SP_REGNUM); | |
2784 | ||
2785 | /* We need space from the stack to store the pointers to argvs. */ | |
2786 | /* As we will infringe on the stack, we need to shift the stack | |
2787 | pointer so that the data is not overwritten. We calculate how | |
2788 | much space is required. */ | |
2789 | sp_move = (no_of_args) * (char_ptr_size); | |
2790 | ||
2791 | /* The final position of stack pointer, we have thus taken some | |
2792 | space from the stack. */ | |
2793 | new_sp = old_sp - sp_move; | |
2794 | ||
2795 | /* Temporary variable holding value where the argv pointers need | |
2796 | to be stored. */ | |
2797 | argv_ptrs_location = new_sp; | |
2798 | ||
2799 | /* The argv pointers are stored at sequential locations. As per | |
2800 | the H8300 ABI. */ | |
2801 | for (i = 0; i < no_of_args; i++) | |
2802 | { | |
2803 | /* Saving the argv pointer. */ | |
2804 | if (h8300hmode || h8300smode) | |
2805 | { | |
2806 | SET_MEMORY_L (argv_ptrs_location, argv_ptrs[i]); | |
2807 | } | |
2808 | else | |
2809 | { | |
2810 | SET_MEMORY_W (argv_ptrs_location, argv_ptrs[i]); | |
2811 | } | |
2812 | ||
2813 | /* The next location where the pointer to the next argv | |
2814 | string has to be stored. */ | |
2815 | argv_ptrs_location += char_ptr_size; | |
2816 | } | |
2817 | ||
2818 | /* Required by POSIX, Setting 0x0 at the end of the list of argv | |
2819 | pointers. */ | |
2820 | if (h8300hmode || h8300smode) | |
2821 | { | |
2822 | SET_MEMORY_L (old_sp, 0x0); | |
2823 | } | |
2824 | else | |
2825 | { | |
2826 | SET_MEMORY_W (old_sp, 0x0); | |
2827 | } | |
2828 | ||
2829 | /* Freeing allocated memory. */ | |
2830 | free (argv_ptrs); | |
2831 | for (i = 0; i <= no_of_args; i++) | |
2832 | { | |
2833 | free (h8_get_cmdline_arg (sd, i)); | |
2834 | } | |
2835 | free (h8_get_command_line (sd)); | |
2836 | ||
2837 | /* The no. of argv arguments are returned in Reg 0. */ | |
2838 | h8_set_reg (sd, 0, no_of_args); | |
2839 | /* The Pointer to argv in Register 1. */ | |
2840 | h8_set_reg (sd, 1, new_sp); | |
2841 | /* Setting the stack pointer to the new value. */ | |
2842 | h8_set_reg (sd, SP_REGNUM, new_sp); | |
2843 | } | |
2844 | goto next; | |
2845 | ||
2846 | /* System call processing starts. */ | |
2847 | case O (O_SYS_OPEN, SB): | |
2848 | { | |
2849 | int len = 0; /* Length of filename. */ | |
2850 | char *filename; /* Filename would go here. */ | |
2851 | char temp_char; /* Temporary character */ | |
2852 | int mode = 0; /* Mode bits for the file. */ | |
2853 | int open_return; /* Return value of open, file descriptor. */ | |
2854 | int i; /* Loop counter */ | |
2855 | int filename_ptr; /* Pointer to filename in cpu memory. */ | |
2856 | ||
2857 | /* Setting filename_ptr to first argument of open, */ | |
2858 | /* and trying to get mode. */ | |
2859 | if (h8300sxmode || h8300hmode || h8300smode) | |
2860 | { | |
2861 | filename_ptr = GET_L_REG (0); | |
2862 | mode = GET_MEMORY_L (h8_get_reg (sd, SP_REGNUM) + 4); | |
2863 | } | |
2864 | else | |
2865 | { | |
2866 | filename_ptr = GET_W_REG (0); | |
2867 | mode = GET_MEMORY_W (h8_get_reg (sd, SP_REGNUM) + 2); | |
2868 | } | |
2869 | ||
2870 | /* Trying to find the length of the filename. */ | |
2871 | temp_char = GET_MEMORY_B (h8_get_reg (sd, 0)); | |
2872 | ||
2873 | len = 1; | |
2874 | while (temp_char != '\0') | |
2875 | { | |
2876 | temp_char = GET_MEMORY_B (filename_ptr + len); | |
2877 | len++; | |
2878 | } | |
2879 | ||
2880 | /* Allocating space for the filename. */ | |
2881 | filename = (char *) malloc (sizeof (char) * len); | |
2882 | ||
2883 | /* String copying the filename from memory. */ | |
2884 | for (i = 0; i < len; i++) | |
2885 | { | |
2886 | temp_char = GET_MEMORY_B (filename_ptr + i); | |
2887 | filename[i] = temp_char; | |
2888 | } | |
2889 | ||
2890 | /* Callback to open and return the file descriptor. */ | |
2891 | open_return = sim_callback->open (sim_callback, filename, mode); | |
2892 | ||
2893 | /* Return value in register 0. */ | |
2894 | h8_set_reg (sd, 0, open_return); | |
2895 | ||
2896 | /* Freeing memory used for filename. */ | |
2897 | free (filename); | |
2898 | } | |
2899 | goto next; | |
2900 | ||
2901 | case O (O_SYS_READ, SB): | |
2902 | { | |
2903 | char *char_ptr; /* Where characters read would be stored. */ | |
2904 | int fd; /* File descriptor */ | |
2905 | int buf_size; /* BUF_SIZE parameter in read. */ | |
2906 | int i = 0; /* Temporary Loop counter */ | |
2907 | int read_return = 0; /* Return value from callback to | |
2908 | read. */ | |
2909 | ||
2910 | fd = h8300hmode ? GET_L_REG (0) : GET_W_REG (0); | |
2911 | buf_size = h8300hmode ? GET_L_REG (2) : GET_W_REG (2); | |
2912 | ||
2913 | char_ptr = (char *) malloc (sizeof (char) * buf_size); | |
2914 | ||
2915 | /* Callback to read and return the no. of characters read. */ | |
2916 | read_return = | |
2917 | sim_callback->read (sim_callback, fd, char_ptr, buf_size); | |
2918 | ||
2919 | /* The characters read are stored in cpu memory. */ | |
2920 | for (i = 0; i < buf_size; i++) | |
2921 | { | |
2922 | SET_MEMORY_B ((h8_get_reg (sd, 1) + (sizeof (char) * i)), | |
2923 | *(char_ptr + (sizeof (char) * i))); | |
2924 | } | |
2925 | ||
2926 | /* Return value in Register 0. */ | |
2927 | h8_set_reg (sd, 0, read_return); | |
2928 | ||
2929 | /* Freeing memory used as buffer. */ | |
2930 | free (char_ptr); | |
2931 | } | |
2932 | goto next; | |
2933 | ||
2934 | case O (O_SYS_WRITE, SB): | |
2935 | { | |
2936 | int fd; /* File descriptor */ | |
2937 | char temp_char; /* Temporary character */ | |
2938 | int len; /* Length of write, Parameter II to write. */ | |
2939 | int char_ptr; /* Character Pointer, Parameter I of write. */ | |
2940 | char *ptr; /* Where characters to be written are stored. | |
2941 | */ | |
2942 | int write_return; /* Return value from callback to write. */ | |
2943 | int i = 0; /* Loop counter */ | |
2944 | ||
2945 | fd = h8300hmode ? GET_L_REG (0) : GET_W_REG (0); | |
2946 | char_ptr = h8300hmode ? GET_L_REG (1) : GET_W_REG (1); | |
2947 | len = h8300hmode ? GET_L_REG (2) : GET_W_REG (2); | |
2948 | ||
2949 | /* Allocating space for the characters to be written. */ | |
2950 | ptr = (char *) malloc (sizeof (char) * len); | |
2951 | ||
2952 | /* Fetching the characters from cpu memory. */ | |
2953 | for (i = 0; i < len; i++) | |
2954 | { | |
2955 | temp_char = GET_MEMORY_B (char_ptr + i); | |
2956 | ptr[i] = temp_char; | |
2957 | } | |
2958 | ||
2959 | /* Callback write and return the no. of characters written. */ | |
2960 | write_return = sim_callback->write (sim_callback, fd, ptr, len); | |
2961 | ||
2962 | /* Return value in Register 0. */ | |
2963 | h8_set_reg (sd, 0, write_return); | |
2964 | ||
2965 | /* Freeing memory used as buffer. */ | |
2966 | free (ptr); | |
2967 | } | |
2968 | goto next; | |
2969 | ||
2970 | case O (O_SYS_LSEEK, SB): | |
2971 | { | |
2972 | int fd; /* File descriptor */ | |
2973 | int offset; /* Offset */ | |
2974 | int origin; /* Origin */ | |
2975 | int lseek_return; /* Return value from callback to lseek. */ | |
2976 | ||
2977 | fd = h8300hmode ? GET_L_REG (0) : GET_W_REG (0); | |
2978 | offset = h8300hmode ? GET_L_REG (1) : GET_W_REG (1); | |
2979 | origin = h8300hmode ? GET_L_REG (2) : GET_W_REG (2); | |
c906108c | 2980 | |
dc5c3759 MS |
2981 | /* Callback lseek and return offset. */ |
2982 | lseek_return = | |
2983 | sim_callback->lseek (sim_callback, fd, offset, origin); | |
3b02cf92 | 2984 | |
dc5c3759 MS |
2985 | /* Return value in register 0. */ |
2986 | h8_set_reg (sd, 0, lseek_return); | |
2987 | } | |
2988 | goto next; | |
c906108c | 2989 | |
dc5c3759 MS |
2990 | case O (O_SYS_CLOSE, SB): |
2991 | { | |
2992 | int fd; /* File descriptor */ | |
2993 | int close_return; /* Return value from callback to close. */ | |
c906108c | 2994 | |
dc5c3759 | 2995 | fd = h8300hmode ? GET_L_REG (0) : GET_W_REG (0); |
c906108c | 2996 | |
dc5c3759 MS |
2997 | /* Callback close and return. */ |
2998 | close_return = sim_callback->close (sim_callback, fd); | |
c906108c | 2999 | |
dc5c3759 MS |
3000 | /* Return value in register 0. */ |
3001 | h8_set_reg (sd, 0, close_return); | |
3002 | } | |
3003 | goto next; | |
c906108c | 3004 | |
dc5c3759 MS |
3005 | case O (O_SYS_FSTAT, SB): |
3006 | { | |
3007 | int fd; /* File descriptor */ | |
3008 | struct stat stat_rec; /* Stat record */ | |
3009 | int fstat_return; /* Return value from callback to stat. */ | |
3010 | int stat_ptr; /* Pointer to stat record. */ | |
3011 | char *temp_stat_ptr; /* Temporary stat_rec pointer. */ | |
c906108c | 3012 | |
dc5c3759 | 3013 | fd = h8300hmode ? GET_L_REG (0) : GET_W_REG (0); |
c906108c | 3014 | |
dc5c3759 MS |
3015 | /* Setting stat_ptr to second argument of stat. */ |
3016 | stat_ptr = h8300hmode ? GET_L_REG (1) : GET_W_REG (1); | |
c906108c | 3017 | |
dc5c3759 MS |
3018 | /* Callback stat and return. */ |
3019 | fstat_return = sim_callback->fstat (sim_callback, fd, &stat_rec); | |
c906108c | 3020 | |
dc5c3759 MS |
3021 | /* Have stat_ptr point to starting of stat_rec. */ |
3022 | temp_stat_ptr = (char *) (&stat_rec); | |
c906108c | 3023 | |
dc5c3759 MS |
3024 | /* Setting up the stat structure returned. */ |
3025 | SET_MEMORY_W (stat_ptr, stat_rec.st_dev); | |
3026 | stat_ptr += 2; | |
3027 | SET_MEMORY_W (stat_ptr, stat_rec.st_ino); | |
3028 | stat_ptr += 2; | |
3029 | SET_MEMORY_L (stat_ptr, stat_rec.st_mode); | |
3030 | stat_ptr += 4; | |
3031 | SET_MEMORY_W (stat_ptr, stat_rec.st_nlink); | |
3032 | stat_ptr += 2; | |
3033 | SET_MEMORY_W (stat_ptr, stat_rec.st_uid); | |
3034 | stat_ptr += 2; | |
3035 | SET_MEMORY_W (stat_ptr, stat_rec.st_gid); | |
3036 | stat_ptr += 2; | |
3037 | SET_MEMORY_W (stat_ptr, stat_rec.st_rdev); | |
3038 | stat_ptr += 2; | |
3039 | SET_MEMORY_L (stat_ptr, stat_rec.st_size); | |
3040 | stat_ptr += 4; | |
3041 | SET_MEMORY_L (stat_ptr, stat_rec.st_atime); | |
3042 | stat_ptr += 8; | |
3043 | SET_MEMORY_L (stat_ptr, stat_rec.st_mtime); | |
3044 | stat_ptr += 8; | |
3045 | SET_MEMORY_L (stat_ptr, stat_rec.st_ctime); | |
c906108c | 3046 | |
dc5c3759 MS |
3047 | /* Return value in register 0. */ |
3048 | h8_set_reg (sd, 0, fstat_return); | |
3049 | } | |
3050 | goto next; | |
c906108c | 3051 | |
dc5c3759 MS |
3052 | case O (O_SYS_STAT, SB): |
3053 | { | |
3054 | int len = 0; /* Length of filename. */ | |
3055 | char *filename; /* Filename would go here. */ | |
3056 | char temp_char; /* Temporary character */ | |
3057 | int filename_ptr; /* Pointer to filename in cpu memory. */ | |
3058 | struct stat stat_rec; /* Stat record */ | |
3059 | int stat_return; /* Return value from callback to stat */ | |
3060 | int stat_ptr; /* Pointer to stat record. */ | |
3061 | char *temp_stat_ptr; /* Temporary stat_rec pointer. */ | |
3062 | int i = 0; /* Loop Counter */ | |
c906108c | 3063 | |
dc5c3759 MS |
3064 | /* Setting filename_ptr to first argument of open. */ |
3065 | filename_ptr = h8300hmode ? GET_L_REG (0) : GET_W_REG (0); | |
c906108c | 3066 | |
dc5c3759 MS |
3067 | /* Trying to find the length of the filename. */ |
3068 | temp_char = GET_MEMORY_B (h8_get_reg (sd, 0)); | |
c906108c | 3069 | |
dc5c3759 MS |
3070 | len = 1; |
3071 | while (temp_char != '\0') | |
3072 | { | |
3073 | temp_char = GET_MEMORY_B (filename_ptr + len); | |
3074 | len++; | |
3075 | } | |
d0fe2f7e | 3076 | |
dc5c3759 MS |
3077 | /* Allocating space for the filename. */ |
3078 | filename = (char *) malloc (sizeof (char) * len); | |
c3f4437e | 3079 | |
dc5c3759 MS |
3080 | /* String copying the filename from memory. */ |
3081 | for (i = 0; i < len; i++) | |
3082 | { | |
3083 | temp_char = GET_MEMORY_B (filename_ptr + i); | |
3084 | filename[i] = temp_char; | |
3085 | } | |
c906108c | 3086 | |
dc5c3759 MS |
3087 | /* Setting stat_ptr to second argument of stat. */ |
3088 | /* stat_ptr = h8_get_reg (sd, 1); */ | |
3089 | stat_ptr = h8300hmode ? GET_L_REG (1) : GET_W_REG (1); | |
c906108c | 3090 | |
dc5c3759 MS |
3091 | /* Callback stat and return. */ |
3092 | stat_return = | |
3093 | sim_callback->stat (sim_callback, filename, &stat_rec); | |
c906108c | 3094 | |
dc5c3759 MS |
3095 | /* Have stat_ptr point to starting of stat_rec. */ |
3096 | temp_stat_ptr = (char *) (&stat_rec); | |
3097 | ||
3098 | /* Freeing memory used for filename. */ | |
3099 | free (filename); | |
3100 | ||
3101 | /* Setting up the stat structure returned. */ | |
3102 | SET_MEMORY_W (stat_ptr, stat_rec.st_dev); | |
3103 | stat_ptr += 2; | |
3104 | SET_MEMORY_W (stat_ptr, stat_rec.st_ino); | |
3105 | stat_ptr += 2; | |
3106 | SET_MEMORY_L (stat_ptr, stat_rec.st_mode); | |
3107 | stat_ptr += 4; | |
3108 | SET_MEMORY_W (stat_ptr, stat_rec.st_nlink); | |
3109 | stat_ptr += 2; | |
3110 | SET_MEMORY_W (stat_ptr, stat_rec.st_uid); | |
3111 | stat_ptr += 2; | |
3112 | SET_MEMORY_W (stat_ptr, stat_rec.st_gid); | |
3113 | stat_ptr += 2; | |
3114 | SET_MEMORY_W (stat_ptr, stat_rec.st_rdev); | |
3115 | stat_ptr += 2; | |
3116 | SET_MEMORY_L (stat_ptr, stat_rec.st_size); | |
3117 | stat_ptr += 4; | |
3118 | SET_MEMORY_L (stat_ptr, stat_rec.st_atime); | |
3119 | stat_ptr += 8; | |
3120 | SET_MEMORY_L (stat_ptr, stat_rec.st_mtime); | |
3121 | stat_ptr += 8; | |
3122 | SET_MEMORY_L (stat_ptr, stat_rec.st_ctime); | |
3123 | ||
3124 | /* Return value in register 0. */ | |
3125 | h8_set_reg (sd, 0, stat_return); | |
3126 | } | |
c906108c | 3127 | goto next; |
dc5c3759 | 3128 | /* End of system call processing. */ |
c906108c | 3129 | |
dc5c3759 MS |
3130 | case O (O_NOT, SB): /* not.b */ |
3131 | if (fetch2 (sd, &code->src, &rd)) | |
3132 | goto end; | |
3133 | rd = ~rd; | |
3134 | v = 0; | |
3135 | goto shift8; | |
c906108c | 3136 | |
dc5c3759 MS |
3137 | case O (O_NOT, SW): /* not.w */ |
3138 | if (fetch2 (sd, &code->src, &rd)) | |
3139 | goto end; | |
3140 | rd = ~rd; | |
3141 | v = 0; | |
3142 | goto shift16; | |
c906108c | 3143 | |
dc5c3759 MS |
3144 | case O (O_NOT, SL): /* not.l */ |
3145 | if (fetch2 (sd, &code->src, &rd)) | |
3146 | goto end; | |
3147 | rd = ~rd; | |
3148 | v = 0; | |
3149 | goto shift32; | |
c906108c | 3150 | |
dc5c3759 MS |
3151 | case O (O_SHLL, SB): /* shll.b */ |
3152 | case O (O_SHLR, SB): /* shlr.b */ | |
3153 | if (fetch2 (sd, &code->dst, &rd)) | |
3154 | goto end; | |
c906108c | 3155 | |
55acb21b MS |
3156 | if (memcmp (&code->src, &code->dst, sizeof (code->src)) == 0) |
3157 | ea = 1; /* unary op */ | |
3158 | else /* binary op */ | |
dc5c3759 | 3159 | fetch (sd, &code->src, &ea); |
c906108c | 3160 | |
dc5c3759 MS |
3161 | if (code->opcode == O (O_SHLL, SB)) |
3162 | { | |
3163 | v = (ea > 8); | |
3164 | c = rd & (0x80 >> (ea - 1)); | |
3165 | rd <<= ea; | |
3166 | } | |
3167 | else | |
3168 | { | |
3169 | v = 0; | |
3170 | c = rd & (1 << (ea - 1)); | |
3171 | rd = (unsigned char) rd >> ea; | |
3172 | } | |
3173 | goto shift8; | |
c906108c | 3174 | |
dc5c3759 MS |
3175 | case O (O_SHLL, SW): /* shll.w */ |
3176 | case O (O_SHLR, SW): /* shlr.w */ | |
3177 | if (fetch2 (sd, &code->dst, &rd)) | |
3178 | goto end; | |
c906108c | 3179 | |
55acb21b MS |
3180 | if (memcmp (&code->src, &code->dst, sizeof (code->src)) == 0) |
3181 | ea = 1; /* unary op */ | |
dc5c3759 | 3182 | else |
55acb21b | 3183 | fetch (sd, &code->src, &ea); |
c906108c | 3184 | |
dc5c3759 MS |
3185 | if (code->opcode == O (O_SHLL, SW)) |
3186 | { | |
3187 | v = (ea > 16); | |
3188 | c = rd & (0x8000 >> (ea - 1)); | |
3189 | rd <<= ea; | |
3190 | } | |
3191 | else | |
3192 | { | |
3193 | v = 0; | |
3194 | c = rd & (1 << (ea - 1)); | |
3195 | rd = (unsigned short) rd >> ea; | |
3196 | } | |
3197 | goto shift16; | |
c906108c | 3198 | |
dc5c3759 MS |
3199 | case O (O_SHLL, SL): /* shll.l */ |
3200 | case O (O_SHLR, SL): /* shlr.l */ | |
3201 | if (fetch2 (sd, &code->dst, &rd)) | |
3202 | goto end; | |
c906108c | 3203 | |
55acb21b MS |
3204 | if (memcmp (&code->src, &code->dst, sizeof (code->src)) == 0) |
3205 | ea = 1; /* unary op */ | |
dc5c3759 | 3206 | else |
55acb21b | 3207 | fetch (sd, &code->src, &ea); |
c906108c | 3208 | |
dc5c3759 | 3209 | if (code->opcode == O (O_SHLL, SL)) |
c3f4437e | 3210 | { |
dc5c3759 MS |
3211 | v = (ea > 32); |
3212 | c = rd & (0x80000000 >> (ea - 1)); | |
3213 | rd <<= ea; | |
c3f4437e | 3214 | } |
dc5c3759 | 3215 | else |
c3f4437e | 3216 | { |
dc5c3759 MS |
3217 | v = 0; |
3218 | c = rd & (1 << (ea - 1)); | |
3219 | rd = (unsigned int) rd >> ea; | |
c3f4437e | 3220 | } |
dc5c3759 MS |
3221 | goto shift32; |
3222 | ||
3223 | case O (O_SHAL, SB): | |
3224 | case O (O_SHAR, SB): | |
3225 | if (fetch2 (sd, &code->dst, &rd)) | |
3226 | goto end; | |
3227 | ||
3228 | if (code->src.type == X (OP_IMM, SB)) | |
3229 | fetch (sd, &code->src, &ea); | |
c3f4437e | 3230 | else |
dc5c3759 | 3231 | ea = 1; |
6147b1f6 | 3232 | |
dc5c3759 | 3233 | if (code->opcode == O (O_SHAL, SB)) |
c3f4437e | 3234 | { |
dc5c3759 MS |
3235 | c = rd & (0x80 >> (ea - 1)); |
3236 | res = rd >> (7 - ea); | |
3237 | v = ((res & 1) && !(res & 2)) | |
3238 | || (!(res & 1) && (res & 2)); | |
3239 | rd <<= ea; | |
c3f4437e | 3240 | } |
dc5c3759 | 3241 | else |
c3f4437e | 3242 | { |
dc5c3759 MS |
3243 | c = rd & (1 << (ea - 1)); |
3244 | v = 0; | |
3245 | rd = ((signed char) rd) >> ea; | |
c3f4437e | 3246 | } |
dc5c3759 MS |
3247 | goto shift8; |
3248 | ||
3249 | case O (O_SHAL, SW): | |
3250 | case O (O_SHAR, SW): | |
3251 | if (fetch2 (sd, &code->dst, &rd)) | |
3252 | goto end; | |
3253 | ||
3254 | if (code->src.type == X (OP_IMM, SW)) | |
3255 | fetch (sd, &code->src, &ea); | |
c3f4437e | 3256 | else |
dc5c3759 | 3257 | ea = 1; |
c906108c | 3258 | |
dc5c3759 | 3259 | if (code->opcode == O (O_SHAL, SW)) |
c3f4437e | 3260 | { |
dc5c3759 MS |
3261 | c = rd & (0x8000 >> (ea - 1)); |
3262 | res = rd >> (15 - ea); | |
3263 | v = ((res & 1) && !(res & 2)) | |
3264 | || (!(res & 1) && (res & 2)); | |
3265 | rd <<= ea; | |
c3f4437e | 3266 | } |
dc5c3759 | 3267 | else |
c3f4437e | 3268 | { |
dc5c3759 MS |
3269 | c = rd & (1 << (ea - 1)); |
3270 | v = 0; | |
3271 | rd = ((signed short) rd) >> ea; | |
c3f4437e | 3272 | } |
dc5c3759 MS |
3273 | goto shift16; |
3274 | ||
3275 | case O (O_SHAL, SL): | |
3276 | case O (O_SHAR, SL): | |
3277 | if (fetch2 (sd, &code->dst, &rd)) | |
3278 | goto end; | |
3279 | ||
3280 | if (code->src.type == X (OP_IMM, SL)) | |
3281 | fetch (sd, &code->src, &ea); | |
3282 | else | |
3283 | ea = 1; | |
c906108c | 3284 | |
dc5c3759 | 3285 | if (code->opcode == O (O_SHAL, SL)) |
c3f4437e | 3286 | { |
dc5c3759 MS |
3287 | c = rd & (0x80000000 >> (ea - 1)); |
3288 | res = rd >> (31 - ea); | |
3289 | v = ((res & 1) && !(res & 2)) | |
3290 | || (!(res & 1) && (res & 2)); | |
3291 | rd <<= ea; | |
c3f4437e | 3292 | } |
dc5c3759 | 3293 | else |
c3f4437e | 3294 | { |
dc5c3759 MS |
3295 | c = rd & (1 << (ea - 1)); |
3296 | v = 0; | |
3297 | rd = ((signed int) rd) >> ea; | |
c3f4437e | 3298 | } |
dc5c3759 | 3299 | goto shift32; |
c906108c | 3300 | |
dc5c3759 MS |
3301 | case O (O_ROTL, SB): |
3302 | case O (O_ROTR, SB): | |
3303 | if (fetch2 (sd, &code->dst, &rd)) | |
3304 | goto end; | |
c906108c | 3305 | |
dc5c3759 MS |
3306 | if (code->src.type == X (OP_IMM, SB)) |
3307 | fetch (sd, &code->src, &ea); | |
3308 | else | |
3309 | ea = 1; | |
c906108c | 3310 | |
dc5c3759 MS |
3311 | while (ea--) |
3312 | if (code->opcode == O (O_ROTL, SB)) | |
3313 | { | |
3314 | c = rd & 0x80; | |
3315 | rd <<= 1; | |
3316 | if (c) | |
3317 | rd |= 1; | |
3318 | } | |
3319 | else | |
3320 | { | |
3321 | c = rd & 1; | |
3322 | rd = ((unsigned char) rd) >> 1; | |
3323 | if (c) | |
3324 | rd |= 0x80; | |
3325 | } | |
c906108c | 3326 | |
dc5c3759 MS |
3327 | v = 0; |
3328 | goto shift8; | |
c906108c | 3329 | |
dc5c3759 MS |
3330 | case O (O_ROTL, SW): |
3331 | case O (O_ROTR, SW): | |
3332 | if (fetch2 (sd, &code->dst, &rd)) | |
3333 | goto end; | |
c906108c | 3334 | |
dc5c3759 MS |
3335 | if (code->src.type == X (OP_IMM, SW)) |
3336 | fetch (sd, &code->src, &ea); | |
3337 | else | |
3338 | ea = 1; | |
c906108c | 3339 | |
dc5c3759 MS |
3340 | while (ea--) |
3341 | if (code->opcode == O (O_ROTL, SW)) | |
3342 | { | |
3343 | c = rd & 0x8000; | |
3344 | rd <<= 1; | |
3345 | if (c) | |
3346 | rd |= 1; | |
3347 | } | |
3348 | else | |
3349 | { | |
3350 | c = rd & 1; | |
3351 | rd = ((unsigned short) rd) >> 1; | |
3352 | if (c) | |
3353 | rd |= 0x8000; | |
3354 | } | |
c906108c | 3355 | |
dc5c3759 MS |
3356 | v = 0; |
3357 | goto shift16; | |
c906108c | 3358 | |
dc5c3759 MS |
3359 | case O (O_ROTL, SL): |
3360 | case O (O_ROTR, SL): | |
3361 | if (fetch2 (sd, &code->dst, &rd)) | |
3362 | goto end; | |
c906108c | 3363 | |
dc5c3759 MS |
3364 | if (code->src.type == X (OP_IMM, SL)) |
3365 | fetch (sd, &code->src, &ea); | |
3366 | else | |
3367 | ea = 1; | |
c906108c | 3368 | |
dc5c3759 MS |
3369 | while (ea--) |
3370 | if (code->opcode == O (O_ROTL, SL)) | |
3371 | { | |
3372 | c = rd & 0x80000000; | |
3373 | rd <<= 1; | |
3374 | if (c) | |
3375 | rd |= 1; | |
3376 | } | |
3377 | else | |
3378 | { | |
3379 | c = rd & 1; | |
3380 | rd = ((unsigned int) rd) >> 1; | |
3381 | if (c) | |
3382 | rd |= 0x80000000; | |
3383 | } | |
c906108c | 3384 | |
dc5c3759 MS |
3385 | v = 0; |
3386 | goto shift32; | |
c906108c | 3387 | |
dc5c3759 MS |
3388 | case O (O_ROTXL, SB): |
3389 | case O (O_ROTXR, SB): | |
3390 | if (fetch2 (sd, &code->dst, &rd)) | |
3391 | goto end; | |
d1360fb0 | 3392 | |
dc5c3759 MS |
3393 | if (code->src.type == X (OP_IMM, SB)) |
3394 | fetch (sd, &code->src, &ea); | |
3395 | else | |
3396 | ea = 1; | |
d1360fb0 | 3397 | |
dc5c3759 MS |
3398 | while (ea--) |
3399 | if (code->opcode == O (O_ROTXL, SB)) | |
3400 | { | |
3401 | res = rd & 0x80; | |
3402 | rd <<= 1; | |
3403 | if (C) | |
3404 | rd |= 1; | |
3405 | c = res; | |
3406 | } | |
3407 | else | |
3408 | { | |
3409 | res = rd & 1; | |
3410 | rd = ((unsigned char) rd) >> 1; | |
3411 | if (C) | |
3412 | rd |= 0x80; | |
3413 | c = res; | |
3414 | } | |
d1360fb0 | 3415 | |
dc5c3759 MS |
3416 | v = 0; |
3417 | goto shift8; | |
d1360fb0 | 3418 | |
dc5c3759 MS |
3419 | case O (O_ROTXL, SW): |
3420 | case O (O_ROTXR, SW): | |
3421 | if (fetch2 (sd, &code->dst, &rd)) | |
3422 | goto end; | |
d1360fb0 | 3423 | |
dc5c3759 MS |
3424 | if (code->src.type == X (OP_IMM, SW)) |
3425 | fetch (sd, &code->src, &ea); | |
3426 | else | |
3427 | ea = 1; | |
d1360fb0 | 3428 | |
dc5c3759 MS |
3429 | while (ea--) |
3430 | if (code->opcode == O (O_ROTXL, SW)) | |
d1360fb0 | 3431 | { |
dc5c3759 MS |
3432 | res = rd & 0x8000; |
3433 | rd <<= 1; | |
3434 | if (C) | |
3435 | rd |= 1; | |
3436 | c = res; | |
d1360fb0 V |
3437 | } |
3438 | else | |
3439 | { | |
dc5c3759 MS |
3440 | res = rd & 1; |
3441 | rd = ((unsigned short) rd) >> 1; | |
3442 | if (C) | |
3443 | rd |= 0x8000; | |
3444 | c = res; | |
d1360fb0 V |
3445 | } |
3446 | ||
dc5c3759 MS |
3447 | v = 0; |
3448 | goto shift16; | |
d1360fb0 | 3449 | |
dc5c3759 MS |
3450 | case O (O_ROTXL, SL): |
3451 | case O (O_ROTXR, SL): | |
3452 | if (fetch2 (sd, &code->dst, &rd)) | |
3453 | goto end; | |
d1360fb0 | 3454 | |
dc5c3759 MS |
3455 | if (code->src.type == X (OP_IMM, SL)) |
3456 | fetch (sd, &code->src, &ea); | |
3457 | else | |
3458 | ea = 1; | |
d1360fb0 | 3459 | |
dc5c3759 MS |
3460 | while (ea--) |
3461 | if (code->opcode == O (O_ROTXL, SL)) | |
3462 | { | |
3463 | res = rd & 0x80000000; | |
3464 | rd <<= 1; | |
3465 | if (C) | |
3466 | rd |= 1; | |
3467 | c = res; | |
3468 | } | |
3469 | else | |
3470 | { | |
3471 | res = rd & 1; | |
3472 | rd = ((unsigned int) rd) >> 1; | |
3473 | if (C) | |
3474 | rd |= 0x80000000; | |
3475 | c = res; | |
d1360fb0 V |
3476 | } |
3477 | ||
dc5c3759 MS |
3478 | v = 0; |
3479 | goto shift32; | |
d1360fb0 | 3480 | |
dc5c3759 MS |
3481 | case O (O_JMP, SN): |
3482 | case O (O_JMP, SL): | |
3483 | case O (O_JMP, SB): /* jmp */ | |
3484 | case O (O_JMP, SW): | |
9f70f8ec MS |
3485 | fetch (sd, &code->src, &pc); |
3486 | goto end; | |
d1360fb0 | 3487 | |
dc5c3759 MS |
3488 | case O (O_JSR, SN): |
3489 | case O (O_JSR, SL): | |
3490 | case O (O_JSR, SB): /* jsr, jump to subroutine */ | |
3491 | case O (O_JSR, SW): | |
9f70f8ec MS |
3492 | if (fetch (sd, &code->src, &pc)) |
3493 | goto end; | |
3494 | call: | |
3495 | tmp = h8_get_reg (sd, SP_REGNUM); | |
d1360fb0 | 3496 | |
9f70f8ec MS |
3497 | if (h8300hmode) |
3498 | { | |
3499 | tmp -= 4; | |
3500 | SET_MEMORY_L (tmp, code->next_pc); | |
3501 | } | |
3502 | else | |
3503 | { | |
3504 | tmp -= 2; | |
3505 | SET_MEMORY_W (tmp, code->next_pc); | |
3506 | } | |
3507 | h8_set_reg (sd, SP_REGNUM, tmp); | |
d1360fb0 | 3508 | |
9f70f8ec | 3509 | goto end; |
dc5c3759 MS |
3510 | |
3511 | case O (O_BSR, SW): | |
3512 | case O (O_BSR, SL): | |
3513 | case O (O_BSR, SB): /* bsr, branch to subroutine */ | |
3514 | if (fetch (sd, &code->src, &res)) | |
3515 | goto end; | |
3516 | pc = code->next_pc + res; | |
3517 | goto call; | |
3518 | ||
9f70f8ec MS |
3519 | case O (O_RTE, SN): /* rte, return from exception */ |
3520 | rte: | |
3521 | /* Pops exr and ccr before pc -- otherwise identical to rts. */ | |
3522 | tmp = h8_get_reg (sd, SP_REGNUM); | |
dc5c3759 | 3523 | |
9f70f8ec MS |
3524 | if (h8300smode) /* pop exr */ |
3525 | { | |
3526 | h8_set_exr (sd, GET_MEMORY_L (tmp)); | |
3527 | tmp += 4; | |
3528 | } | |
3529 | if (h8300hmode) | |
3530 | { | |
3531 | h8_set_ccr (sd, GET_MEMORY_L (tmp)); | |
3532 | tmp += 4; | |
3533 | pc = GET_MEMORY_L (tmp); | |
3534 | tmp += 4; | |
3535 | } | |
3536 | else | |
3537 | { | |
3538 | h8_set_ccr (sd, GET_MEMORY_W (tmp)); | |
3539 | tmp += 2; | |
3540 | pc = GET_MEMORY_W (tmp); | |
3541 | tmp += 2; | |
3542 | } | |
dc5c3759 | 3543 | |
9f70f8ec MS |
3544 | GETSR (sd); |
3545 | h8_set_reg (sd, SP_REGNUM, tmp); | |
3546 | goto end; | |
d1360fb0 | 3547 | |
9f70f8ec MS |
3548 | case O (O_RTS, SN): /* rts, return from subroutine */ |
3549 | rts: | |
3550 | tmp = h8_get_reg (sd, SP_REGNUM); | |
3551 | ||
3552 | if (h8300hmode) | |
3553 | { | |
3554 | pc = GET_MEMORY_L (tmp); | |
3555 | tmp += 4; | |
3556 | } | |
3557 | else | |
3558 | { | |
3559 | pc = GET_MEMORY_W (tmp); | |
3560 | tmp += 2; | |
3561 | } | |
3562 | ||
3563 | h8_set_reg (sd, SP_REGNUM, tmp); | |
3564 | goto end; | |
d1360fb0 | 3565 | |
dc5c3759 MS |
3566 | case O (O_ILL, SB): /* illegal */ |
3567 | sim_engine_set_run_state (sd, sim_stopped, SIGILL); | |
3568 | goto end; | |
3569 | ||
3570 | case O (O_SLEEP, SN): /* sleep */ | |
3571 | /* Check for magic numbers in r1 and r2. */ | |
3572 | if ((h8_get_reg (sd, R1_REGNUM) & 0xffff) == LIBC_EXIT_MAGIC1 && | |
3573 | (h8_get_reg (sd, R2_REGNUM) & 0xffff) == LIBC_EXIT_MAGIC2 && | |
3574 | SIM_WIFEXITED (h8_get_reg (sd, 0))) | |
3575 | { | |
3576 | /* This trap comes from _exit, not from gdb. */ | |
3577 | sim_engine_set_run_state (sd, sim_exited, | |
3578 | SIM_WEXITSTATUS (h8_get_reg (sd, 0))); | |
3579 | } | |
e22fef83 | 3580 | #if 0 |
f0861129 MS |
3581 | else if (SIM_WIFSTOPPED (h8_get_reg (sd, 0))) |
3582 | { | |
3583 | /* Pass the stop signal up to gdb. */ | |
3584 | sim_engine_set_run_state (sd, sim_stopped, | |
3585 | SIM_WSTOPSIG (h8_get_reg (sd, 0))); | |
3586 | } | |
e22fef83 | 3587 | #endif |
dc5c3759 MS |
3588 | else |
3589 | { | |
3590 | /* Treat it as a sigtrap. */ | |
3591 | sim_engine_set_run_state (sd, sim_stopped, SIGTRAP); | |
3592 | } | |
3593 | goto end; | |
bf174226 | 3594 | |
9f70f8ec MS |
3595 | case O (O_TRAPA, SB): /* trapa */ |
3596 | if (fetch (sd, &code->src, &res)) | |
3597 | goto end; /* res is vector number. */ | |
3598 | ||
3599 | tmp = h8_get_reg (sd, SP_REGNUM); | |
3600 | tmp -= 4; | |
3601 | SET_MEMORY_L (tmp, code->next_pc); | |
3602 | tmp -= 4; | |
3603 | SET_MEMORY_L (tmp, h8_get_ccr (sd)); | |
3604 | intMaskBit = 1; | |
3605 | BUILDSR (sd); | |
3606 | ||
3607 | if (h8300smode) | |
3608 | { | |
3609 | tmp -= 4; | |
3610 | SET_MEMORY_L (tmp, h8_get_exr (sd)); | |
3611 | } | |
3612 | ||
3613 | h8_set_reg (sd, SP_REGNUM, tmp); | |
3614 | ||
3615 | /* FIXME: "normal" mode should use 2-byte ptrs. */ | |
3616 | pc = GET_MEMORY_L (0x20 + res * 4); | |
3617 | goto end; | |
3618 | ||
dc5c3759 MS |
3619 | case O (O_BPT, SN): |
3620 | sim_engine_set_run_state (sd, sim_stopped, SIGTRAP); | |
3621 | goto end; | |
bf174226 | 3622 | |
dc5c3759 MS |
3623 | case O (O_BSETEQ, SB): |
3624 | if (Z) | |
3625 | goto bset; | |
3626 | goto next; | |
bf174226 | 3627 | |
dc5c3759 MS |
3628 | case O (O_BSETNE, SB): |
3629 | if (!Z) | |
3630 | goto bset; | |
3631 | goto next; | |
bf174226 | 3632 | |
dc5c3759 MS |
3633 | case O (O_BCLREQ, SB): |
3634 | if (Z) | |
3635 | goto bclr; | |
3636 | goto next; | |
bf174226 | 3637 | |
dc5c3759 MS |
3638 | case O (O_BCLRNE, SB): |
3639 | if (!Z) | |
3640 | goto bclr; | |
3641 | goto next; | |
bf174226 | 3642 | |
dc5c3759 MS |
3643 | OBITOP (O_BNOT, 1, 1, ea ^= m); /* bnot */ |
3644 | OBITOP (O_BTST, 1, 0, nz = ea & m); /* btst */ | |
3645 | bset: | |
3646 | OBITOP (O_BSET, 1, 1, ea |= m); /* bset */ | |
3647 | bclr: | |
3648 | OBITOP (O_BCLR, 1, 1, ea &= ~m); /* bclr */ | |
3649 | OBITOP (O_BLD, 1, 0, c = ea & m); /* bld */ | |
3650 | OBITOP (O_BILD, 1, 0, c = !(ea & m)); /* bild */ | |
3651 | OBITOP (O_BST, 1, 1, ea &= ~m; | |
3652 | if (C) ea |= m); /* bst */ | |
3653 | OBITOP (O_BIST, 1, 1, ea &= ~m; | |
3654 | if (!C) ea |= m); /* bist */ | |
3655 | OBITOP (O_BSTZ, 1, 1, ea &= ~m; | |
3656 | if (Z) ea |= m); /* bstz */ | |
3657 | OBITOP (O_BISTZ, 1, 1, ea &= ~m; | |
3658 | if (!Z) ea |= m); /* bistz */ | |
3659 | OBITOP (O_BAND, 1, 0, c = (ea & m) && C); /* band */ | |
3660 | OBITOP (O_BIAND, 1, 0, c = !(ea & m) && C); /* biand */ | |
3661 | OBITOP (O_BOR, 1, 0, c = (ea & m) || C); /* bor */ | |
3662 | OBITOP (O_BIOR, 1, 0, c = !(ea & m) || C); /* bior */ | |
3663 | OBITOP (O_BXOR, 1, 0, c = ((ea & m) != 0)!= C); /* bxor */ | |
3664 | OBITOP (O_BIXOR, 1, 0, c = !(ea & m) != C); /* bixor */ | |
3665 | ||
3666 | case O (O_BFLD, SB): /* bfld */ | |
3667 | /* bitfield load */ | |
3668 | ea = 0; | |
3669 | if (fetch (sd, &code->src, &bit)) | |
3670 | goto end; | |
bf174226 | 3671 | |
dc5c3759 MS |
3672 | if (bit != 0) |
3673 | { | |
3674 | if (fetch (sd, &code->dst, &ea)) | |
3675 | goto end; | |
bf174226 | 3676 | |
dc5c3759 MS |
3677 | ea &= bit; |
3678 | while (!(bit & 1)) | |
3679 | { | |
3680 | ea >>= 1; | |
3681 | bit >>= 1; | |
3682 | } | |
3683 | } | |
3684 | if (store (sd, &code->op3, ea)) | |
3685 | goto end; | |
bf174226 | 3686 | |
c906108c SS |
3687 | goto next; |
3688 | ||
dc5c3759 MS |
3689 | case O(O_BFST, SB): /* bfst */ |
3690 | /* bitfield store */ | |
3691 | /* NOTE: the imm8 value is in dst, and the ea value | |
3692 | (which is actually the destination) is in op3. | |
3693 | It has to be that way, to avoid breaking the assembler. */ | |
bf174226 | 3694 | |
dc5c3759 MS |
3695 | if (fetch (sd, &code->dst, &bit)) /* imm8 */ |
3696 | goto end; | |
3697 | if (bit == 0) /* noop -- nothing to do. */ | |
3698 | goto next; | |
bf174226 | 3699 | |
dc5c3759 MS |
3700 | if (fetch (sd, &code->src, &rd)) /* reg8 src */ |
3701 | goto end; | |
bf174226 | 3702 | |
dc5c3759 MS |
3703 | if (fetch2 (sd, &code->op3, &ea)) /* ea dst */ |
3704 | goto end; | |
bf174226 | 3705 | |
dc5c3759 MS |
3706 | /* Left-shift the register data into position. */ |
3707 | for (tmp = bit; !(tmp & 1); tmp >>= 1) | |
3708 | rd <<= 1; | |
bf174226 | 3709 | |
dc5c3759 MS |
3710 | /* Combine it with the neighboring bits. */ |
3711 | ea = (ea & ~bit) | (rd & bit); | |
bf174226 | 3712 | |
dc5c3759 MS |
3713 | /* Put it back. */ |
3714 | if (store2 (sd, &code->op3, ea)) | |
3715 | goto end; | |
3716 | goto next; | |
3717 | ||
3718 | case O (O_CLRMAC, SN): /* clrmac */ | |
3719 | h8_set_mach (sd, 0); | |
3720 | h8_set_macl (sd, 0); | |
3721 | h8_set_macZ (sd, 1); | |
3722 | h8_set_macV (sd, 0); | |
3723 | h8_set_macN (sd, 0); | |
3724 | goto next; | |
3725 | ||
3726 | case O (O_STMAC, SL): /* stmac, 260 */ | |
3727 | switch (code->src.type) { | |
3728 | case X (OP_MACH, SL): | |
3729 | res = h8_get_mach (sd); | |
3730 | if (res & 0x200) /* sign extend */ | |
3731 | res |= 0xfffffc00; | |
3732 | break; | |
3733 | case X (OP_MACL, SL): | |
3734 | res = h8_get_macl (sd); | |
3735 | break; | |
3736 | default: goto illegal; | |
bf174226 | 3737 | } |
dc5c3759 MS |
3738 | nz = !h8_get_macZ (sd); |
3739 | n = h8_get_macN (sd); | |
3740 | v = h8_get_macV (sd); | |
3741 | ||
3742 | if (store (sd, &code->dst, res)) | |
3743 | goto end; | |
3744 | ||
bf174226 V |
3745 | goto next; |
3746 | ||
dc5c3759 MS |
3747 | case O (O_LDMAC, SL): /* ldmac, 179 */ |
3748 | if (fetch (sd, &code->src, &rd)) | |
3749 | goto end; | |
bf174226 | 3750 | |
dc5c3759 MS |
3751 | switch (code->dst.type) { |
3752 | case X (OP_MACH, SL): | |
3753 | rd &= 0x3ff; /* Truncate to 10 bits */ | |
3754 | h8_set_mach (sd, rd); | |
3755 | break; | |
3756 | case X (OP_MACL, SL): | |
3757 | h8_set_macl (sd, rd); | |
3758 | break; | |
3759 | default: goto illegal; | |
3760 | } | |
3761 | h8_set_macV (sd, 0); | |
3762 | goto next; | |
bf174226 | 3763 | |
dc5c3759 MS |
3764 | case O (O_MAC, SW): |
3765 | if (fetch (sd, &code->src, &rd) || | |
3766 | fetch (sd, &code->dst, &res)) | |
3767 | goto end; | |
bf174226 | 3768 | |
dc5c3759 MS |
3769 | /* Ye gods, this is non-portable! |
3770 | However, the existing mul/div code is similar. */ | |
3771 | res = SEXTSHORT (res) * SEXTSHORT (rd); | |
bf174226 | 3772 | |
dc5c3759 MS |
3773 | if (h8_get_macS (sd)) /* Saturating mode */ |
3774 | { | |
3775 | long long mac = h8_get_macl (sd); | |
bf174226 | 3776 | |
dc5c3759 MS |
3777 | if (mac & 0x80000000) /* sign extend */ |
3778 | mac |= 0xffffffff00000000LL; | |
bf174226 | 3779 | |
dc5c3759 MS |
3780 | mac += res; |
3781 | if (mac > 0x7fffffff || mac < 0xffffffff80000000LL) | |
3782 | h8_set_macV (sd, 1); | |
3783 | h8_set_macZ (sd, (mac == 0)); | |
3784 | h8_set_macN (sd, (mac < 0)); | |
3785 | h8_set_macl (sd, (int) mac); | |
3786 | } | |
3787 | else /* "Less Saturating" mode */ | |
3788 | { | |
3789 | long long mac = h8_get_mach (sd); | |
3790 | mac <<= 32; | |
3791 | mac += h8_get_macl (sd); | |
3792 | ||
3793 | if (mac & 0x20000000000LL) /* sign extend */ | |
3794 | mac |= 0xfffffc0000000000LL; | |
3795 | ||
3796 | mac += res; | |
3797 | if (mac > 0x1ffffffffffLL || | |
3798 | mac < (long long) 0xfffffe0000000000LL) | |
3799 | h8_set_macV (sd, 1); | |
3800 | h8_set_macZ (sd, (mac == 0)); | |
3801 | h8_set_macN (sd, (mac < 0)); | |
3802 | h8_set_macl (sd, (int) mac); | |
3803 | mac >>= 32; | |
3804 | h8_set_mach (sd, (int) (mac & 0x3ff)); | |
3805 | } | |
bf174226 V |
3806 | goto next; |
3807 | ||
dc5c3759 MS |
3808 | case O (O_MULS, SW): /* muls.w */ |
3809 | if (fetch (sd, &code->src, &ea) || | |
3810 | fetch (sd, &code->dst, &rd)) | |
3811 | goto end; | |
bf174226 | 3812 | |
dc5c3759 MS |
3813 | /* FIXME: is this the right place to be doing sign extend? */ |
3814 | if (OP_KIND (code->src.type) == OP_IMM && | |
3815 | (ea & 8) != 0) | |
3816 | ea |= 0xfff0; | |
3817 | else | |
3818 | ea = SEXTSHORT (ea); | |
bf174226 | 3819 | |
dc5c3759 MS |
3820 | res = SEXTSHORT (ea * SEXTSHORT (rd)); |
3821 | ||
3822 | n = res & 0x8000; | |
3823 | nz = res & 0xffff; | |
3824 | if (store (sd, &code->dst, res)) | |
3825 | goto end; | |
bf174226 | 3826 | |
bf174226 V |
3827 | goto next; |
3828 | ||
dc5c3759 MS |
3829 | case O (O_MULS, SL): /* muls.l */ |
3830 | if (fetch (sd, &code->src, &ea) || | |
3831 | fetch (sd, &code->dst, &rd)) | |
3832 | goto end; | |
bf174226 | 3833 | |
dc5c3759 MS |
3834 | /* FIXME: is this the right place to be doing sign extend? */ |
3835 | if (OP_KIND (code->src.type) == OP_IMM && | |
3836 | (ea & 8) != 0) | |
3837 | ea |= 0xfffffff0; | |
bf174226 | 3838 | |
dc5c3759 | 3839 | res = ea * rd; |
bf174226 | 3840 | |
dc5c3759 MS |
3841 | n = res & 0x80000000; |
3842 | nz = res & 0xffffffff; | |
3843 | if (store (sd, &code->dst, res)) | |
3844 | goto end; | |
bf174226 V |
3845 | goto next; |
3846 | ||
dc5c3759 MS |
3847 | case O (O_MULSU, SL): /* muls/u.l */ |
3848 | if (fetch (sd, &code->src, &ea) || | |
3849 | fetch (sd, &code->dst, &rd)) | |
3850 | goto end; | |
bf174226 | 3851 | |
dc5c3759 MS |
3852 | /* FIXME: is this the right place to be doing sign extend? */ |
3853 | if (OP_KIND (code->src.type) == OP_IMM && | |
3854 | (ea & 8) != 0) | |
3855 | ea |= 0xfffffff0; | |
bf174226 | 3856 | |
dc5c3759 MS |
3857 | /* Compute upper 32 bits of the 64-bit result. */ |
3858 | res = (((long long) ea) * ((long long) rd)) >> 32; | |
bf174226 | 3859 | |
dc5c3759 MS |
3860 | n = res & 0x80000000; |
3861 | nz = res & 0xffffffff; | |
3862 | if (store (sd, &code->dst, res)) | |
3863 | goto end; | |
3864 | goto next; | |
bf174226 | 3865 | |
dc5c3759 MS |
3866 | case O (O_MULU, SW): /* mulu.w */ |
3867 | if (fetch (sd, &code->src, &ea) || | |
3868 | fetch (sd, &code->dst, &rd)) | |
3869 | goto end; | |
bf174226 | 3870 | |
dc5c3759 MS |
3871 | res = UEXTSHORT ((UEXTSHORT (ea) * UEXTSHORT (rd))); |
3872 | ||
3873 | /* Don't set Z or N. */ | |
3874 | if (store (sd, &code->dst, res)) | |
3875 | goto end; | |
bf174226 | 3876 | |
bf174226 V |
3877 | goto next; |
3878 | ||
dc5c3759 MS |
3879 | case O (O_MULU, SL): /* mulu.l */ |
3880 | if (fetch (sd, &code->src, &ea) || | |
3881 | fetch (sd, &code->dst, &rd)) | |
3882 | goto end; | |
bf174226 | 3883 | |
dc5c3759 | 3884 | res = ea * rd; |
bf174226 | 3885 | |
dc5c3759 MS |
3886 | /* Don't set Z or N. */ |
3887 | if (store (sd, &code->dst, res)) | |
3888 | goto end; | |
bf174226 | 3889 | |
dc5c3759 | 3890 | goto next; |
bf174226 | 3891 | |
dc5c3759 MS |
3892 | case O (O_MULUU, SL): /* mulu/u.l */ |
3893 | if (fetch (sd, &code->src, &ea) || | |
3894 | fetch (sd, &code->dst, &rd)) | |
3895 | goto end; | |
bf174226 | 3896 | |
dc5c3759 MS |
3897 | /* Compute upper 32 bits of the 64-bit result. */ |
3898 | res = (((unsigned long long) (unsigned) ea) * | |
3899 | ((unsigned long long) (unsigned) rd)) >> 32; | |
bf174226 | 3900 | |
dc5c3759 MS |
3901 | /* Don't set Z or N. */ |
3902 | if (store (sd, &code->dst, res)) | |
3903 | goto end; | |
bf174226 | 3904 | |
dc5c3759 | 3905 | goto next; |
bf174226 | 3906 | |
dc5c3759 MS |
3907 | case O (O_MULXS, SB): /* mulxs.b */ |
3908 | if (fetch (sd, &code->src, &ea) || | |
3909 | fetch (sd, &code->dst, &rd)) | |
3910 | goto end; | |
bf174226 | 3911 | |
dc5c3759 MS |
3912 | /* FIXME: is this the right place to be doing sign extend? */ |
3913 | if (OP_KIND (code->src.type) == OP_IMM && | |
3914 | (ea & 8) != 0) | |
3915 | ea |= 0xfffffff0; | |
3916 | else | |
3917 | ea = SEXTCHAR (ea); | |
bf174226 | 3918 | |
dc5c3759 MS |
3919 | res = ea * SEXTCHAR (rd); |
3920 | ||
3921 | n = res & 0x8000; | |
3922 | nz = res & 0xffff; | |
3923 | if (store (sd, &code->dst, res)) | |
3924 | goto end; | |
bf174226 | 3925 | |
bf174226 | 3926 | goto next; |
bf174226 | 3927 | |
dc5c3759 MS |
3928 | case O (O_MULXS, SW): /* mulxs.w */ |
3929 | if (fetch (sd, &code->src, &ea) || | |
3930 | fetch (sd, &code->dst, &rd)) | |
c906108c SS |
3931 | goto end; |
3932 | ||
dc5c3759 MS |
3933 | /* FIXME: is this the right place to be doing sign extend? */ |
3934 | if (OP_KIND (code->src.type) == OP_IMM && | |
3935 | (ea & 8) != 0) | |
3936 | ea |= 0xfff0; | |
3937 | else | |
3938 | ea = SEXTSHORT (ea); | |
c906108c | 3939 | |
dc5c3759 | 3940 | res = ea * SEXTSHORT (rd & 0xffff); |
c906108c | 3941 | |
dc5c3759 MS |
3942 | n = res & 0x80000000; |
3943 | nz = res & 0xffffffff; | |
3944 | if (store (sd, &code->dst, res)) | |
3945 | goto end; | |
3946 | ||
3947 | goto next; | |
c906108c | 3948 | |
dc5c3759 MS |
3949 | case O (O_MULXU, SB): /* mulxu.b */ |
3950 | if (fetch (sd, &code->src, &ea) || | |
3951 | fetch (sd, &code->dst, &rd)) | |
c906108c | 3952 | goto end; |
c906108c | 3953 | |
dc5c3759 | 3954 | res = UEXTCHAR (ea) * UEXTCHAR (rd); |
c906108c | 3955 | |
dc5c3759 MS |
3956 | if (store (sd, &code->dst, res)) |
3957 | goto end; | |
c906108c | 3958 | |
dc5c3759 | 3959 | goto next; |
c906108c | 3960 | |
dc5c3759 MS |
3961 | case O (O_MULXU, SW): /* mulxu.w */ |
3962 | if (fetch (sd, &code->src, &ea) || | |
3963 | fetch (sd, &code->dst, &rd)) | |
c906108c | 3964 | goto end; |
c906108c | 3965 | |
dc5c3759 | 3966 | res = UEXTSHORT (ea) * UEXTSHORT (rd); |
c906108c | 3967 | |
dc5c3759 MS |
3968 | if (store (sd, &code->dst, res)) |
3969 | goto end; | |
3970 | ||
3971 | goto next; | |
c906108c | 3972 | |
9f70f8ec MS |
3973 | case O (O_TAS, SB): /* tas (test and set) */ |
3974 | if (!h8300sxmode) /* h8sx can use any register. */ | |
3975 | switch (code->src.reg) | |
3976 | { | |
3977 | case R0_REGNUM: | |
3978 | case R1_REGNUM: | |
3979 | case R4_REGNUM: | |
3980 | case R5_REGNUM: | |
3981 | break; | |
3982 | default: | |
3983 | goto illegal; | |
3984 | } | |
3985 | ||
dc5c3759 MS |
3986 | if (fetch (sd, &code->src, &res)) |
3987 | goto end; | |
3988 | if (store (sd, &code->src, res | 0x80)) | |
3989 | goto end; | |
3990 | ||
6147b1f6 | 3991 | goto just_flags_log8; |
c906108c | 3992 | |
dc5c3759 MS |
3993 | case O (O_DIVU, SW): /* divu.w */ |
3994 | if (fetch (sd, &code->src, &ea) || | |
3995 | fetch (sd, &code->dst, &rd)) | |
3996 | goto end; | |
c906108c | 3997 | |
dc5c3759 MS |
3998 | n = ea & 0x8000; |
3999 | nz = ea & 0xffff; | |
4000 | if (ea) | |
4001 | res = (unsigned) (UEXTSHORT (rd) / UEXTSHORT (ea)); | |
4002 | else | |
4003 | res = 0; | |
c906108c | 4004 | |
dc5c3759 MS |
4005 | if (store (sd, &code->dst, res)) |
4006 | goto end; | |
4007 | goto next; | |
c906108c | 4008 | |
dc5c3759 MS |
4009 | case O (O_DIVU, SL): /* divu.l */ |
4010 | if (fetch (sd, &code->src, &ea) || | |
4011 | fetch (sd, &code->dst, &rd)) | |
4012 | goto end; | |
4013 | ||
4014 | n = ea & 0x80000000; | |
4015 | nz = ea & 0xffffffff; | |
4016 | if (ea) | |
4017 | res = (unsigned) rd / ea; | |
4018 | else | |
4019 | res = 0; | |
4020 | ||
4021 | if (store (sd, &code->dst, res)) | |
4022 | goto end; | |
4023 | goto next; | |
4024 | ||
4025 | case O (O_DIVS, SW): /* divs.w */ | |
4026 | if (fetch (sd, &code->src, &ea) || | |
4027 | fetch (sd, &code->dst, &rd)) | |
4028 | goto end; | |
4029 | ||
4030 | /* FIXME: is this the right place to be doing sign extend? */ | |
4031 | if (OP_KIND (code->src.type) == OP_IMM && | |
4032 | (ea & 8) != 0) | |
4033 | ea |= 0xfffffff0; | |
4034 | ||
4035 | if (ea) | |
4036 | { | |
4037 | res = SEXTSHORT (rd) / SEXTSHORT (ea); | |
4038 | nz = 1; | |
4039 | } | |
4040 | else | |
4041 | { | |
4042 | res = 0; | |
4043 | nz = 0; | |
4044 | } | |
4045 | ||
4046 | n = res & 0x8000; | |
4047 | if (store (sd, &code->dst, res)) | |
4048 | goto end; | |
4049 | goto next; | |
4050 | ||
4051 | case O (O_DIVS, SL): /* divs.l */ | |
4052 | if (fetch (sd, &code->src, &ea) || | |
4053 | fetch (sd, &code->dst, &rd)) | |
4054 | goto end; | |
4055 | ||
4056 | /* FIXME: is this the right place to be doing sign extend? */ | |
4057 | if (OP_KIND (code->src.type) == OP_IMM && | |
4058 | (ea & 8) != 0) | |
4059 | ea |= 0xfffffff0; | |
4060 | ||
4061 | if (ea) | |
4062 | { | |
4063 | res = rd / ea; | |
4064 | nz = 1; | |
4065 | } | |
4066 | else | |
4067 | { | |
4068 | res = 0; | |
4069 | nz = 0; | |
4070 | } | |
4071 | ||
4072 | n = res & 0x80000000; | |
4073 | if (store (sd, &code->dst, res)) | |
4074 | goto end; | |
4075 | goto next; | |
4076 | ||
4077 | case O (O_DIVXU, SB): /* divxu.b */ | |
4078 | if (fetch (sd, &code->src, &ea) || | |
4079 | fetch (sd, &code->dst, &rd)) | |
4080 | goto end; | |
4081 | ||
4082 | rd = UEXTSHORT (rd); | |
4083 | ea = UEXTCHAR (ea); | |
4084 | ||
4085 | n = ea & 0x80; | |
4086 | nz = ea & 0xff; | |
4087 | if (ea) | |
4088 | { | |
4089 | tmp = (unsigned) rd % ea; | |
4090 | res = (unsigned) rd / ea; | |
4091 | } | |
4092 | else | |
4093 | { | |
4094 | tmp = 0; | |
4095 | res = 0; | |
4096 | } | |
4097 | ||
9f70f8ec | 4098 | if (store (sd, &code->dst, (res & 0xff) | (tmp << 8))) |
dc5c3759 MS |
4099 | goto end; |
4100 | goto next; | |
4101 | ||
4102 | case O (O_DIVXU, SW): /* divxu.w */ | |
4103 | if (fetch (sd, &code->src, &ea) || | |
4104 | fetch (sd, &code->dst, &rd)) | |
4105 | goto end; | |
4106 | ||
4107 | ea = UEXTSHORT (ea); | |
4108 | ||
4109 | n = ea & 0x8000; | |
4110 | nz = ea & 0xffff; | |
4111 | if (ea) | |
4112 | { | |
4113 | tmp = (unsigned) rd % ea; | |
4114 | res = (unsigned) rd / ea; | |
4115 | } | |
4116 | else | |
4117 | { | |
4118 | tmp = 0; | |
4119 | res = 0; | |
4120 | } | |
4121 | ||
4122 | if (store (sd, &code->dst, (res & 0xffff) | (tmp << 16))) | |
4123 | goto end; | |
4124 | goto next; | |
4125 | ||
4126 | case O (O_DIVXS, SB): /* divxs.b */ | |
4127 | if (fetch (sd, &code->src, &ea) || | |
4128 | fetch (sd, &code->dst, &rd)) | |
4129 | goto end; | |
4130 | ||
4131 | rd = SEXTSHORT (rd); | |
4132 | ||
4133 | /* FIXME: is this the right place to be doing sign extend? */ | |
4134 | if (OP_KIND (code->src.type) == OP_IMM && | |
4135 | (ea & 8) != 0) | |
4136 | ea |= 0xfffffff0; | |
4137 | else | |
4138 | ea = SEXTCHAR (ea); | |
4139 | ||
4140 | if (ea) | |
4141 | { | |
4142 | tmp = (int) rd % (int) ea; | |
4143 | res = (int) rd / (int) ea; | |
4144 | nz = 1; | |
4145 | } | |
4146 | else | |
4147 | { | |
4148 | tmp = 0; | |
4149 | res = 0; | |
4150 | nz = 0; | |
4151 | } | |
4152 | ||
4153 | n = res & 0x8000; | |
4154 | if (store (sd, &code->dst, (res & 0xff) | (tmp << 8))) | |
4155 | goto end; | |
4156 | goto next; | |
4157 | ||
4158 | case O (O_DIVXS, SW): /* divxs.w */ | |
4159 | if (fetch (sd, &code->src, &ea) || | |
4160 | fetch (sd, &code->dst, &rd)) | |
4161 | goto end; | |
4162 | ||
4163 | /* FIXME: is this the right place to be doing sign extend? */ | |
4164 | if (OP_KIND (code->src.type) == OP_IMM && | |
4165 | (ea & 8) != 0) | |
4166 | ea |= 0xfffffff0; | |
4167 | else | |
4168 | ea = SEXTSHORT (ea); | |
4169 | ||
4170 | if (ea) | |
4171 | { | |
4172 | tmp = (int) rd % (int) ea; | |
4173 | res = (int) rd / (int) ea; | |
4174 | nz = 1; | |
4175 | } | |
4176 | else | |
4177 | { | |
4178 | tmp = 0; | |
4179 | res = 0; | |
4180 | nz = 0; | |
4181 | } | |
4182 | ||
4183 | n = res & 0x80000000; | |
4184 | if (store (sd, &code->dst, (res & 0xffff) | (tmp << 16))) | |
4185 | goto end; | |
4186 | goto next; | |
4187 | ||
4188 | case O (O_EXTS, SW): /* exts.w, signed extend */ | |
4189 | if (fetch2 (sd, &code->dst, &rd)) | |
4190 | goto end; | |
c906108c | 4191 | ea = rd & 0x80 ? -256 : 0; |
dc5c3759 | 4192 | res = (rd & 0xff) + ea; |
c906108c | 4193 | goto log16; |
dc5c3759 MS |
4194 | |
4195 | case O (O_EXTS, SL): /* exts.l, signed extend */ | |
4196 | if (fetch2 (sd, &code->dst, &rd)) | |
4197 | goto end; | |
4198 | if (code->src.type == X (OP_IMM, SL)) | |
4199 | { | |
4200 | if (fetch (sd, &code->src, &ea)) | |
4201 | goto end; | |
4202 | ||
4203 | if (ea == 2) /* exts.l #2, nn */ | |
4204 | { | |
4205 | /* Sign-extend from 8-bit to 32-bit. */ | |
4206 | ea = rd & 0x80 ? -256 : 0; | |
4207 | res = (rd & 0xff) + ea; | |
4208 | goto log32; | |
4209 | } | |
4210 | } | |
4211 | /* Sign-extend from 16-bit to 32-bit. */ | |
c906108c | 4212 | ea = rd & 0x8000 ? -65536 : 0; |
dc5c3759 | 4213 | res = (rd & 0xffff) + ea; |
c906108c | 4214 | goto log32; |
dc5c3759 MS |
4215 | |
4216 | case O (O_EXTU, SW): /* extu.w, unsigned extend */ | |
4217 | if (fetch2 (sd, &code->dst, &rd)) | |
4218 | goto end; | |
c906108c | 4219 | ea = 0; |
dc5c3759 | 4220 | res = (rd & 0xff) + ea; |
c906108c | 4221 | goto log16; |
dc5c3759 MS |
4222 | |
4223 | case O (O_EXTU, SL): /* extu.l, unsigned extend */ | |
4224 | if (fetch2 (sd, &code->dst, &rd)) | |
4225 | goto end; | |
4226 | if (code->src.type == X (OP_IMM, SL)) | |
4227 | { | |
4228 | if (fetch (sd, &code->src, &ea)) | |
4229 | goto end; | |
4230 | ||
4231 | if (ea == 2) /* extu.l #2, nn */ | |
4232 | { | |
4233 | /* Zero-extend from 8-bit to 32-bit. */ | |
4234 | ea = 0; | |
4235 | res = (rd & 0xff) + ea; | |
4236 | goto log32; | |
4237 | } | |
4238 | } | |
4239 | /* Zero-extend from 16-bit to 32-bit. */ | |
c906108c | 4240 | ea = 0; |
dc5c3759 | 4241 | res = (rd & 0xffff) + ea; |
c906108c SS |
4242 | goto log32; |
4243 | ||
dc5c3759 | 4244 | case O (O_NOP, SN): /* nop */ |
c906108c SS |
4245 | goto next; |
4246 | ||
dc5c3759 | 4247 | case O (O_STM, SL): /* stm, store to memory */ |
c906108c SS |
4248 | { |
4249 | int nregs, firstreg, i; | |
4250 | ||
4251 | nregs = GET_MEMORY_B (pc + 1); | |
4252 | nregs >>= 4; | |
4253 | nregs &= 0xf; | |
dc5c3759 | 4254 | firstreg = code->src.reg; |
c906108c SS |
4255 | firstreg &= 0xf; |
4256 | for (i = firstreg; i <= firstreg + nregs; i++) | |
4257 | { | |
dc5c3759 MS |
4258 | h8_set_reg (sd, SP_REGNUM, h8_get_reg (sd, SP_REGNUM) - 4); |
4259 | SET_MEMORY_L (h8_get_reg (sd, SP_REGNUM), h8_get_reg (sd, i)); | |
c906108c SS |
4260 | } |
4261 | } | |
4262 | goto next; | |
4263 | ||
dc5c3759 | 4264 | case O (O_LDM, SL): /* ldm, load from memory */ |
9f70f8ec MS |
4265 | case O (O_RTEL, SN): /* rte/l, ldm plus rte */ |
4266 | case O (O_RTSL, SN): /* rts/l, ldm plus rts */ | |
c906108c SS |
4267 | { |
4268 | int nregs, firstreg, i; | |
4269 | ||
9f70f8ec MS |
4270 | nregs = ((GET_MEMORY_B (pc + 1) >> 4) & 0xf); |
4271 | firstreg = code->dst.reg & 0xf; | |
c906108c SS |
4272 | for (i = firstreg; i >= firstreg - nregs; i--) |
4273 | { | |
dc5c3759 MS |
4274 | h8_set_reg (sd, i, GET_MEMORY_L (h8_get_reg (sd, SP_REGNUM))); |
4275 | h8_set_reg (sd, SP_REGNUM, h8_get_reg (sd, SP_REGNUM) + 4); | |
c906108c SS |
4276 | } |
4277 | } | |
9f70f8ec MS |
4278 | switch (code->opcode) { |
4279 | case O (O_RTEL, SN): | |
4280 | goto rte; | |
4281 | case O (O_RTSL, SN): | |
4282 | goto rts; | |
4283 | case O (O_LDM, SL): | |
4284 | goto next; | |
4285 | default: | |
4286 | goto illegal; | |
4287 | } | |
c906108c | 4288 | |
b7f97e9c MS |
4289 | case O (O_DAA, SB): |
4290 | /* Decimal Adjust Addition. This is for BCD arithmetic. */ | |
9f70f8ec | 4291 | res = GET_B_REG (code->src.reg); /* FIXME fetch? */ |
dc5c3759 MS |
4292 | if (!c && (0 <= (res >> 4) && (res >> 4) <= 9) && |
4293 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) | |
b7f97e9c | 4294 | res = res; /* Value added == 0. */ |
dc5c3759 MS |
4295 | else if (!c && (0 <= (res >> 4) && (res >> 4) <= 8) && |
4296 | !h && (10 <= (res & 0xf) && (res & 0xf) <= 15)) | |
b7f97e9c | 4297 | res = res + 0x6; /* Value added == 6. */ |
dc5c3759 MS |
4298 | else if (!c && (0 <= (res >> 4) && (res >> 4) <= 9) && |
4299 | h && (0 <= (res & 0xf) && (res & 0xf) <= 3)) | |
b7f97e9c | 4300 | res = res + 0x6; /* Value added == 6. */ |
dc5c3759 MS |
4301 | else if (!c && (10 <= (res >> 4) && (res >> 4) <= 15) && |
4302 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) | |
4303 | res = res + 0x60; /* Value added == 60. */ | |
4304 | else if (!c && (9 <= (res >> 4) && (res >> 4) <= 15) && | |
4305 | !h && (10 <= (res & 0xf) && (res & 0xf) <= 15)) | |
4306 | res = res + 0x66; /* Value added == 66. */ | |
4307 | else if (!c && (10 <= (res >> 4) && (res >> 4) <= 15) && | |
4308 | h && (0 <= (res & 0xf) && (res & 0xf) <= 3)) | |
4309 | res = res + 0x66; /* Value added == 66. */ | |
4310 | else if ( c && (1 <= (res >> 4) && (res >> 4) <= 2) && | |
4311 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) | |
b7f97e9c | 4312 | res = res + 0x60; /* Value added == 60. */ |
dc5c3759 MS |
4313 | else if ( c && (1 <= (res >> 4) && (res >> 4) <= 2) && |
4314 | !h && (10 <= (res & 0xf) && (res & 0xf) <= 15)) | |
b7f97e9c | 4315 | res = res + 0x66; /* Value added == 66. */ |
dc5c3759 MS |
4316 | else if (c && (1 <= (res >> 4) && (res >> 4) <= 3) && |
4317 | h && (0 <= (res & 0xf) && (res & 0xf) <= 3)) | |
b7f97e9c | 4318 | res = res + 0x66; /* Value added == 66. */ |
b7f97e9c MS |
4319 | |
4320 | goto alu8; | |
4321 | ||
4322 | case O (O_DAS, SB): | |
4323 | /* Decimal Adjust Subtraction. This is for BCD arithmetic. */ | |
4324 | res = GET_B_REG (code->src.reg); /* FIXME fetch, fetch2... */ | |
dc5c3759 MS |
4325 | if (!c && (0 <= (res >> 4) && (res >> 4) <= 9) && |
4326 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) | |
b7f97e9c | 4327 | res = res; /* Value added == 0. */ |
dc5c3759 MS |
4328 | else if (!c && (0 <= (res >> 4) && (res >> 4) <= 8) && |
4329 | h && (6 <= (res & 0xf) && (res & 0xf) <= 15)) | |
b7f97e9c | 4330 | res = res + 0xfa; /* Value added == 0xfa. */ |
dc5c3759 MS |
4331 | else if ( c && (7 <= (res >> 4) && (res >> 4) <= 15) && |
4332 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) | |
b7f97e9c | 4333 | res = res + 0xa0; /* Value added == 0xa0. */ |
dc5c3759 MS |
4334 | else if (c && (6 <= (res >> 4) && (res >> 4) <= 15) && |
4335 | h && (6 <= (res & 0xf) && (res & 0xf) <= 15)) | |
b7f97e9c MS |
4336 | res = res + 0x9a; /* Value added == 0x9a. */ |
4337 | ||
4338 | goto alu8; | |
4339 | ||
c906108c | 4340 | default: |
d0fe2f7e | 4341 | illegal: |
dc5c3759 | 4342 | sim_engine_set_run_state (sd, sim_stopped, SIGILL); |
c906108c SS |
4343 | goto end; |
4344 | ||
4345 | } | |
dc5c3759 MS |
4346 | |
4347 | (*sim_callback->printf_filtered) (sim_callback, | |
4348 | "sim_resume: internal error.\n"); | |
4349 | sim_engine_set_run_state (sd, sim_stopped, SIGILL); | |
4350 | goto end; | |
c906108c SS |
4351 | |
4352 | setc: | |
dc5c3759 MS |
4353 | if (code->dst.type == X (OP_CCR, SB) || |
4354 | code->dst.type == X (OP_CCR, SW)) | |
c3f4437e | 4355 | { |
dc5c3759 | 4356 | h8_set_ccr (sd, res); |
9f70f8ec | 4357 | GETSR (sd); |
c3f4437e | 4358 | } |
dc5c3759 MS |
4359 | else if (h8300smode && |
4360 | (code->dst.type == X (OP_EXR, SB) || | |
4361 | code->dst.type == X (OP_EXR, SW))) | |
c3f4437e | 4362 | { |
dc5c3759 MS |
4363 | h8_set_exr (sd, res); |
4364 | if (h8300smode) /* Get exr. */ | |
4365 | { | |
4366 | trace = (h8_get_exr (sd) >> 7) & 1; | |
4367 | intMask = h8_get_exr (sd) & 7; | |
4368 | } | |
c3f4437e | 4369 | } |
fc974602 | 4370 | else |
c3f4437e | 4371 | goto illegal; |
fc974602 | 4372 | |
c906108c SS |
4373 | goto next; |
4374 | ||
4375 | condtrue: | |
4376 | /* When a branch works */ | |
dc5c3759 MS |
4377 | if (fetch (sd, &code->src, &res)) |
4378 | goto end; | |
4379 | if (res & 1) /* bad address */ | |
4380 | goto illegal; | |
4381 | pc = code->next_pc + res; | |
c906108c SS |
4382 | goto end; |
4383 | ||
4384 | /* Set the cond codes from res */ | |
4385 | bitop: | |
4386 | ||
4387 | /* Set the flags after an 8 bit inc/dec operation */ | |
4388 | just_flags_inc8: | |
4389 | n = res & 0x80; | |
4390 | nz = res & 0xff; | |
4391 | v = (rd & 0x7f) == 0x7f; | |
4392 | goto next; | |
4393 | ||
c906108c SS |
4394 | /* Set the flags after an 16 bit inc/dec operation */ |
4395 | just_flags_inc16: | |
4396 | n = res & 0x8000; | |
4397 | nz = res & 0xffff; | |
4398 | v = (rd & 0x7fff) == 0x7fff; | |
4399 | goto next; | |
4400 | ||
c906108c SS |
4401 | /* Set the flags after an 32 bit inc/dec operation */ |
4402 | just_flags_inc32: | |
4403 | n = res & 0x80000000; | |
4404 | nz = res & 0xffffffff; | |
4405 | v = (rd & 0x7fffffff) == 0x7fffffff; | |
4406 | goto next; | |
4407 | ||
c906108c SS |
4408 | shift8: |
4409 | /* Set flags after an 8 bit shift op, carry,overflow set in insn */ | |
4410 | n = (rd & 0x80); | |
4411 | nz = rd & 0xff; | |
dc5c3759 MS |
4412 | if (store2 (sd, &code->dst, rd)) |
4413 | goto end; | |
c906108c SS |
4414 | goto next; |
4415 | ||
4416 | shift16: | |
4417 | /* Set flags after an 16 bit shift op, carry,overflow set in insn */ | |
4418 | n = (rd & 0x8000); | |
4419 | nz = rd & 0xffff; | |
dc5c3759 MS |
4420 | if (store2 (sd, &code->dst, rd)) |
4421 | goto end; | |
c906108c SS |
4422 | goto next; |
4423 | ||
4424 | shift32: | |
4425 | /* Set flags after an 32 bit shift op, carry,overflow set in insn */ | |
4426 | n = (rd & 0x80000000); | |
4427 | nz = rd & 0xffffffff; | |
dc5c3759 MS |
4428 | if (store2 (sd, &code->dst, rd)) |
4429 | goto end; | |
c906108c SS |
4430 | goto next; |
4431 | ||
4432 | log32: | |
dc5c3759 MS |
4433 | if (store2 (sd, &code->dst, res)) |
4434 | goto end; | |
4435 | ||
c906108c SS |
4436 | just_flags_log32: |
4437 | /* flags after a 32bit logical operation */ | |
4438 | n = res & 0x80000000; | |
4439 | nz = res & 0xffffffff; | |
4440 | v = 0; | |
4441 | goto next; | |
4442 | ||
4443 | log16: | |
dc5c3759 MS |
4444 | if (store2 (sd, &code->dst, res)) |
4445 | goto end; | |
4446 | ||
c906108c SS |
4447 | just_flags_log16: |
4448 | /* flags after a 16bit logical operation */ | |
4449 | n = res & 0x8000; | |
4450 | nz = res & 0xffff; | |
4451 | v = 0; | |
4452 | goto next; | |
4453 | ||
c906108c | 4454 | log8: |
dc5c3759 MS |
4455 | if (store2 (sd, &code->dst, res)) |
4456 | goto end; | |
4457 | ||
c906108c SS |
4458 | just_flags_log8: |
4459 | n = res & 0x80; | |
4460 | nz = res & 0xff; | |
4461 | v = 0; | |
4462 | goto next; | |
4463 | ||
4464 | alu8: | |
dc5c3759 MS |
4465 | if (store2 (sd, &code->dst, res)) |
4466 | goto end; | |
4467 | ||
c906108c SS |
4468 | just_flags_alu8: |
4469 | n = res & 0x80; | |
4470 | nz = res & 0xff; | |
4471 | c = (res & 0x100); | |
4472 | switch (code->opcode / 4) | |
4473 | { | |
4474 | case O_ADD: | |
dc5c3759 | 4475 | case O_ADDX: |
c906108c SS |
4476 | v = ((rd & 0x80) == (ea & 0x80) |
4477 | && (rd & 0x80) != (res & 0x80)); | |
4478 | break; | |
4479 | case O_SUB: | |
dc5c3759 | 4480 | case O_SUBX: |
c906108c SS |
4481 | case O_CMP: |
4482 | v = ((rd & 0x80) != (-ea & 0x80) | |
4483 | && (rd & 0x80) != (res & 0x80)); | |
4484 | break; | |
4485 | case O_NEG: | |
4486 | v = (rd == 0x80); | |
4487 | break; | |
dc5c3759 MS |
4488 | case O_DAA: |
4489 | case O_DAS: | |
4490 | break; /* No effect on v flag. */ | |
c906108c SS |
4491 | } |
4492 | goto next; | |
4493 | ||
4494 | alu16: | |
dc5c3759 MS |
4495 | if (store2 (sd, &code->dst, res)) |
4496 | goto end; | |
4497 | ||
c906108c SS |
4498 | just_flags_alu16: |
4499 | n = res & 0x8000; | |
4500 | nz = res & 0xffff; | |
4501 | c = (res & 0x10000); | |
4502 | switch (code->opcode / 4) | |
4503 | { | |
4504 | case O_ADD: | |
dc5c3759 | 4505 | case O_ADDX: |
c906108c SS |
4506 | v = ((rd & 0x8000) == (ea & 0x8000) |
4507 | && (rd & 0x8000) != (res & 0x8000)); | |
4508 | break; | |
4509 | case O_SUB: | |
dc5c3759 | 4510 | case O_SUBX: |
c906108c SS |
4511 | case O_CMP: |
4512 | v = ((rd & 0x8000) != (-ea & 0x8000) | |
4513 | && (rd & 0x8000) != (res & 0x8000)); | |
4514 | break; | |
4515 | case O_NEG: | |
4516 | v = (rd == 0x8000); | |
4517 | break; | |
4518 | } | |
4519 | goto next; | |
4520 | ||
4521 | alu32: | |
dc5c3759 MS |
4522 | if (store2 (sd, &code->dst, res)) |
4523 | goto end; | |
4524 | ||
c906108c SS |
4525 | just_flags_alu32: |
4526 | n = res & 0x80000000; | |
4527 | nz = res & 0xffffffff; | |
4528 | switch (code->opcode / 4) | |
4529 | { | |
4530 | case O_ADD: | |
dc5c3759 | 4531 | case O_ADDX: |
c906108c SS |
4532 | v = ((rd & 0x80000000) == (ea & 0x80000000) |
4533 | && (rd & 0x80000000) != (res & 0x80000000)); | |
dc5c3759 MS |
4534 | c = ((unsigned) res < (unsigned) rd) || |
4535 | ((unsigned) res < (unsigned) ea); | |
c906108c SS |
4536 | break; |
4537 | case O_SUB: | |
dc5c3759 | 4538 | case O_SUBX: |
c906108c SS |
4539 | case O_CMP: |
4540 | v = ((rd & 0x80000000) != (-ea & 0x80000000) | |
4541 | && (rd & 0x80000000) != (res & 0x80000000)); | |
4542 | c = (unsigned) rd < (unsigned) -ea; | |
4543 | break; | |
4544 | case O_NEG: | |
4545 | v = (rd == 0x80000000); | |
4546 | c = res != 0; | |
4547 | break; | |
4548 | } | |
4549 | goto next; | |
4550 | ||
dc5c3759 MS |
4551 | next: |
4552 | if ((res = h8_get_delayed_branch (sd)) != 0) | |
4553 | { | |
4554 | pc = res; | |
4555 | h8_set_delayed_branch (sd, 0); | |
4556 | } | |
4557 | else | |
4558 | pc = code->next_pc; | |
c906108c SS |
4559 | |
4560 | end: | |
dc5c3759 | 4561 | |
c906108c SS |
4562 | if (--poll_count < 0) |
4563 | { | |
7a292a7a | 4564 | poll_count = POLL_QUIT_INTERVAL; |
c906108c SS |
4565 | if ((*sim_callback->poll_quit) != NULL |
4566 | && (*sim_callback->poll_quit) (sim_callback)) | |
dc5c3759 | 4567 | sim_engine_set_run_state (sd, sim_stopped, SIGINT); |
c906108c | 4568 | } |
dc5c3759 MS |
4569 | sim_engine_get_run_state (sd, &reason, &sigrc); |
4570 | } while (reason == sim_running); | |
c906108c | 4571 | |
dc5c3759 MS |
4572 | h8_set_ticks (sd, h8_get_ticks (sd) + get_now () - tick_start); |
4573 | h8_set_cycles (sd, h8_get_cycles (sd) + cycles); | |
4574 | h8_set_insts (sd, h8_get_insts (sd) + insts); | |
4575 | h8_set_pc (sd, pc); | |
4576 | BUILDSR (sd); | |
4577 | ||
4578 | if (h8300smode) | |
4579 | h8_set_exr (sd, (trace<<7) | intMask); | |
4580 | ||
4581 | h8_set_mask (sd, oldmask); | |
c906108c SS |
4582 | signal (SIGINT, prev); |
4583 | } | |
4584 | ||
4585 | int | |
a4f27e3e | 4586 | sim_trace (SIM_DESC sd) |
c906108c | 4587 | { |
2ea716f6 | 4588 | /* FIXME: Unfinished. */ |
dc5c3759 MS |
4589 | (*sim_callback->printf_filtered) (sim_callback, |
4590 | "sim_trace: trace not supported.\n"); | |
4591 | return 1; /* Done. */ | |
c906108c SS |
4592 | } |
4593 | ||
4594 | int | |
a4f27e3e | 4595 | sim_write (SIM_DESC sd, SIM_ADDR addr, unsigned char *buffer, int size) |
c906108c SS |
4596 | { |
4597 | int i; | |
4598 | ||
dc5c3759 | 4599 | init_pointers (sd); |
c906108c SS |
4600 | if (addr < 0) |
4601 | return 0; | |
4602 | for (i = 0; i < size; i++) | |
4603 | { | |
4604 | if (addr < memory_size) | |
4605 | { | |
dc5c3759 MS |
4606 | h8_set_memory (sd, addr + i, buffer[i]); |
4607 | h8_set_cache_idx (sd, addr + i, 0); | |
c906108c SS |
4608 | } |
4609 | else | |
dc5c3759 MS |
4610 | { |
4611 | h8_set_eightbit (sd, (addr + i) & 0xff, buffer[i]); | |
4612 | } | |
c906108c SS |
4613 | } |
4614 | return size; | |
4615 | } | |
4616 | ||
4617 | int | |
a4f27e3e | 4618 | sim_read (SIM_DESC sd, SIM_ADDR addr, unsigned char *buffer, int size) |
c906108c | 4619 | { |
dc5c3759 | 4620 | init_pointers (sd); |
c906108c SS |
4621 | if (addr < 0) |
4622 | return 0; | |
4623 | if (addr < memory_size) | |
dc5c3759 | 4624 | memcpy (buffer, h8_get_memory_buf (sd) + addr, size); |
c906108c | 4625 | else |
dc5c3759 | 4626 | memcpy (buffer, h8_get_eightbit_buf (sd) + (addr & 0xff), size); |
c906108c SS |
4627 | return size; |
4628 | } | |
4629 | ||
4630 | ||
c906108c | 4631 | int |
a4f27e3e | 4632 | sim_store_register (SIM_DESC sd, int rn, unsigned char *value, int length) |
c906108c SS |
4633 | { |
4634 | int longval; | |
4635 | int shortval; | |
4636 | int intval; | |
4637 | longval = (value[0] << 24) | (value[1] << 16) | (value[2] << 8) | value[3]; | |
4638 | shortval = (value[0] << 8) | (value[1]); | |
4639 | intval = h8300hmode ? longval : shortval; | |
4640 | ||
dc5c3759 | 4641 | init_pointers (sd); |
c906108c SS |
4642 | switch (rn) |
4643 | { | |
9f70f8ec MS |
4644 | case PC_REGNUM: |
4645 | h8_set_pc (sd, intval); | |
4646 | break; | |
c906108c | 4647 | default: |
dc5c3759 MS |
4648 | (*sim_callback->printf_filtered) (sim_callback, |
4649 | "sim_store_register: bad regnum %d.\n", | |
4650 | rn); | |
c906108c SS |
4651 | case R0_REGNUM: |
4652 | case R1_REGNUM: | |
4653 | case R2_REGNUM: | |
4654 | case R3_REGNUM: | |
4655 | case R4_REGNUM: | |
4656 | case R5_REGNUM: | |
4657 | case R6_REGNUM: | |
4658 | case R7_REGNUM: | |
dc5c3759 | 4659 | h8_set_reg (sd, rn, intval); |
c906108c SS |
4660 | break; |
4661 | case CCR_REGNUM: | |
dc5c3759 | 4662 | h8_set_ccr (sd, intval); |
c906108c | 4663 | break; |
fc974602 | 4664 | case EXR_REGNUM: |
dc5c3759 | 4665 | h8_set_exr (sd, intval); |
fc974602 | 4666 | break; |
173b1c98 MS |
4667 | case SBR_REGNUM: |
4668 | h8_set_sbr (sd, intval); | |
4669 | break; | |
4670 | case VBR_REGNUM: | |
4671 | h8_set_vbr (sd, intval); | |
4672 | break; | |
4673 | case MACH_REGNUM: | |
4674 | h8_set_mach (sd, intval); | |
4675 | break; | |
4676 | case MACL_REGNUM: | |
4677 | h8_set_macl (sd, intval); | |
4678 | break; | |
c906108c | 4679 | case CYCLE_REGNUM: |
dc5c3759 | 4680 | h8_set_cycles (sd, longval); |
c906108c | 4681 | break; |
9f70f8ec | 4682 | |
c906108c | 4683 | case INST_REGNUM: |
dc5c3759 | 4684 | h8_set_insts (sd, longval); |
c906108c | 4685 | break; |
9f70f8ec | 4686 | |
c906108c | 4687 | case TICK_REGNUM: |
dc5c3759 | 4688 | h8_set_ticks (sd, longval); |
c906108c SS |
4689 | break; |
4690 | } | |
4691 | return -1; | |
4692 | } | |
4693 | ||
4694 | int | |
a4f27e3e | 4695 | sim_fetch_register (SIM_DESC sd, int rn, unsigned char *buf, int length) |
c906108c SS |
4696 | { |
4697 | int v; | |
4698 | int longreg = 0; | |
4699 | ||
dc5c3759 | 4700 | init_pointers (sd); |
c906108c | 4701 | |
d0fe2f7e | 4702 | if (!h8300smode && rn >= EXR_REGNUM) |
c3f4437e | 4703 | rn++; |
c906108c SS |
4704 | switch (rn) |
4705 | { | |
4706 | default: | |
dc5c3759 MS |
4707 | (*sim_callback->printf_filtered) (sim_callback, |
4708 | "sim_fetch_register: bad regnum %d.\n", | |
4709 | rn); | |
4710 | v = 0; | |
4711 | break; | |
3b02cf92 | 4712 | case CCR_REGNUM: |
dc5c3759 | 4713 | v = h8_get_ccr (sd); |
c906108c | 4714 | break; |
fc974602 | 4715 | case EXR_REGNUM: |
dc5c3759 | 4716 | v = h8_get_exr (sd); |
fc974602 | 4717 | break; |
3b02cf92 | 4718 | case PC_REGNUM: |
dc5c3759 | 4719 | v = h8_get_pc (sd); |
c906108c | 4720 | break; |
173b1c98 MS |
4721 | case SBR_REGNUM: |
4722 | v = h8_get_sbr (sd); | |
4723 | break; | |
4724 | case VBR_REGNUM: | |
4725 | v = h8_get_vbr (sd); | |
4726 | break; | |
4727 | case MACH_REGNUM: | |
4728 | v = h8_get_mach (sd); | |
4729 | break; | |
4730 | case MACL_REGNUM: | |
4731 | v = h8_get_macl (sd); | |
4732 | break; | |
c906108c SS |
4733 | case R0_REGNUM: |
4734 | case R1_REGNUM: | |
4735 | case R2_REGNUM: | |
4736 | case R3_REGNUM: | |
4737 | case R4_REGNUM: | |
4738 | case R5_REGNUM: | |
4739 | case R6_REGNUM: | |
4740 | case R7_REGNUM: | |
dc5c3759 | 4741 | v = h8_get_reg (sd, rn); |
c906108c | 4742 | break; |
3b02cf92 | 4743 | case CYCLE_REGNUM: |
dc5c3759 | 4744 | v = h8_get_cycles (sd); |
c906108c SS |
4745 | longreg = 1; |
4746 | break; | |
3b02cf92 | 4747 | case TICK_REGNUM: |
dc5c3759 | 4748 | v = h8_get_ticks (sd); |
c906108c SS |
4749 | longreg = 1; |
4750 | break; | |
3b02cf92 | 4751 | case INST_REGNUM: |
dc5c3759 | 4752 | v = h8_get_insts (sd); |
c906108c SS |
4753 | longreg = 1; |
4754 | break; | |
4755 | } | |
4756 | if (h8300hmode || longreg) | |
4757 | { | |
4758 | buf[0] = v >> 24; | |
4759 | buf[1] = v >> 16; | |
4760 | buf[2] = v >> 8; | |
4761 | buf[3] = v >> 0; | |
4762 | } | |
4763 | else | |
4764 | { | |
4765 | buf[0] = v >> 8; | |
4766 | buf[1] = v; | |
4767 | } | |
4768 | return -1; | |
4769 | } | |
4770 | ||
4771 | void | |
a4f27e3e | 4772 | sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc) |
c906108c | 4773 | { |
dc5c3759 | 4774 | sim_engine_get_run_state (sd, reason, sigrc); |
c906108c SS |
4775 | } |
4776 | ||
4777 | /* FIXME: Rename to sim_set_mem_size. */ | |
4778 | ||
4779 | void | |
a4f27e3e | 4780 | sim_size (int n) |
c906108c SS |
4781 | { |
4782 | /* Memory size is fixed. */ | |
4783 | } | |
4784 | ||
dc5c3759 MS |
4785 | static void |
4786 | set_simcache_size (SIM_DESC sd, int n) | |
c906108c | 4787 | { |
dc5c3759 MS |
4788 | if (sd->sim_cache) |
4789 | free (sd->sim_cache); | |
c906108c SS |
4790 | if (n < 2) |
4791 | n = 2; | |
dc5c3759 MS |
4792 | sd->sim_cache = (decoded_inst *) malloc (sizeof (decoded_inst) * n); |
4793 | memset (sd->sim_cache, 0, sizeof (decoded_inst) * n); | |
4794 | sd->sim_cache_size = n; | |
c906108c SS |
4795 | } |
4796 | ||
4797 | ||
4798 | void | |
a4f27e3e | 4799 | sim_info (SIM_DESC sd, int verbose) |
c906108c | 4800 | { |
dc5c3759 MS |
4801 | double timetaken = (double) h8_get_ticks (sd) / (double) now_persec (); |
4802 | double virttime = h8_get_cycles (sd) / 10.0e6; | |
c906108c SS |
4803 | |
4804 | (*sim_callback->printf_filtered) (sim_callback, | |
4805 | "\n\n#instructions executed %10d\n", | |
dc5c3759 | 4806 | h8_get_insts (sd)); |
c906108c SS |
4807 | (*sim_callback->printf_filtered) (sim_callback, |
4808 | "#cycles (v approximate) %10d\n", | |
dc5c3759 | 4809 | h8_get_cycles (sd)); |
c906108c SS |
4810 | (*sim_callback->printf_filtered) (sim_callback, |
4811 | "#real time taken %10.4f\n", | |
4812 | timetaken); | |
4813 | (*sim_callback->printf_filtered) (sim_callback, | |
e8c1a4e7 | 4814 | "#virtual time taken %10.4f\n", |
c906108c SS |
4815 | virttime); |
4816 | if (timetaken != 0.0) | |
4817 | (*sim_callback->printf_filtered) (sim_callback, | |
4818 | "#simulation ratio %10.4f\n", | |
4819 | virttime / timetaken); | |
4820 | (*sim_callback->printf_filtered) (sim_callback, | |
4821 | "#compiles %10d\n", | |
dc5c3759 | 4822 | h8_get_compiles (sd)); |
c906108c SS |
4823 | (*sim_callback->printf_filtered) (sim_callback, |
4824 | "#cache size %10d\n", | |
dc5c3759 | 4825 | sd->sim_cache_size); |
c906108c SS |
4826 | |
4827 | #ifdef ADEBUG | |
4828 | /* This to be conditional on `what' (aka `verbose'), | |
4829 | however it was never passed as non-zero. */ | |
4830 | if (1) | |
4831 | { | |
4832 | int i; | |
4833 | for (i = 0; i < O_LAST; i++) | |
4834 | { | |
dc5c3759 MS |
4835 | if (h8_get_stats (sd, i)) |
4836 | (*sim_callback->printf_filtered) (sim_callback, "%d: %d\n", | |
4837 | i, h8_get_stats (sd, i)); | |
c906108c SS |
4838 | } |
4839 | } | |
4840 | #endif | |
4841 | } | |
4842 | ||
2ea716f6 KH |
4843 | /* Indicate whether the cpu is an H8/300 or H8/300H. |
4844 | FLAG is non-zero for the H8/300H. */ | |
c906108c SS |
4845 | |
4846 | void | |
27ebfdf4 | 4847 | set_h8300h (unsigned long machine) |
c906108c SS |
4848 | { |
4849 | /* FIXME: Much of the code in sim_load can be moved to sim_open. | |
4850 | This function being replaced by a sim_open:ARGV configuration | |
2ea716f6 | 4851 | option. */ |
dc5c3759 | 4852 | |
9f70f8ec | 4853 | if (machine == bfd_mach_h8300sx || machine == bfd_mach_h8300sxn) |
27ebfdf4 MS |
4854 | h8300sxmode = 1; |
4855 | ||
4856 | if (machine == bfd_mach_h8300s || machine == bfd_mach_h8300sn || h8300sxmode) | |
4857 | h8300smode = 1; | |
4858 | ||
4859 | if (machine == bfd_mach_h8300h || machine == bfd_mach_h8300hn || h8300smode) | |
4860 | h8300hmode = 1; | |
dc5c3759 MS |
4861 | } |
4862 | ||
4863 | /* Cover function of sim_state_free to free the cpu buffers as well. */ | |
4864 | ||
4865 | static void | |
4866 | free_state (SIM_DESC sd) | |
4867 | { | |
4868 | if (STATE_MODULES (sd) != NULL) | |
4869 | sim_module_uninstall (sd); | |
4870 | ||
4871 | /* Fixme: free buffers in _sim_cpu. */ | |
4872 | sim_state_free (sd); | |
c906108c SS |
4873 | } |
4874 | ||
4875 | SIM_DESC | |
a4f27e3e | 4876 | sim_open (SIM_OPEN_KIND kind, |
dc5c3759 | 4877 | struct host_callback_struct *callback, |
6b4a8935 | 4878 | struct bfd *abfd, |
a4f27e3e | 4879 | char **argv) |
c906108c | 4880 | { |
dc5c3759 MS |
4881 | SIM_DESC sd; |
4882 | sim_cpu *cpu; | |
4883 | ||
4884 | sd = sim_state_alloc (kind, callback); | |
4885 | sd->cpu = sim_cpu_alloc (sd, 0); | |
4886 | cpu = STATE_CPU (sd, 0); | |
4887 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
4888 | sim_state_initialize (sd, cpu); | |
4889 | /* sim_cpu object is new, so some initialization is needed. */ | |
4890 | init_pointers_needed = 1; | |
4891 | ||
4892 | /* For compatibility (FIXME: is this right?). */ | |
4893 | current_alignment = NONSTRICT_ALIGNMENT; | |
4894 | current_target_byte_order = BIG_ENDIAN; | |
4895 | ||
4896 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) | |
4897 | { | |
4898 | free_state (sd); | |
4899 | return 0; | |
4900 | } | |
4901 | ||
4902 | /* getopt will print the error message so we just have to exit if | |
4903 | this fails. FIXME: Hmmm... in the case of gdb we need getopt | |
4904 | to call print_filtered. */ | |
4905 | if (sim_parse_args (sd, argv) != SIM_RC_OK) | |
4906 | { | |
4907 | /* Uninstall the modules to avoid memory leaks, | |
4908 | file descriptor leaks, etc. */ | |
4909 | free_state (sd); | |
4910 | return 0; | |
4911 | } | |
4912 | ||
4913 | /* Check for/establish the a reference program image. */ | |
4914 | if (sim_analyze_program (sd, | |
4915 | (STATE_PROG_ARGV (sd) != NULL | |
4916 | ? *STATE_PROG_ARGV (sd) | |
4917 | : NULL), abfd) != SIM_RC_OK) | |
4918 | { | |
4919 | free_state (sd); | |
4920 | return 0; | |
4921 | } | |
4922 | ||
4923 | /* Establish any remaining configuration options. */ | |
4924 | if (sim_config (sd) != SIM_RC_OK) | |
4925 | { | |
4926 | free_state (sd); | |
4927 | return 0; | |
4928 | } | |
4929 | ||
4930 | if (sim_post_argv_init (sd) != SIM_RC_OK) | |
4931 | { | |
4932 | /* Uninstall the modules to avoid memory leaks, | |
4933 | file descriptor leaks, etc. */ | |
4934 | free_state (sd); | |
4935 | return 0; | |
4936 | } | |
4937 | ||
4938 | /* sim_hw_configure (sd); */ | |
4939 | ||
2ea716f6 | 4940 | /* FIXME: Much of the code in sim_load can be moved here. */ |
c906108c SS |
4941 | |
4942 | sim_kind = kind; | |
4943 | myname = argv[0]; | |
dc5c3759 MS |
4944 | sim_callback = callback; |
4945 | return sd; | |
c906108c SS |
4946 | } |
4947 | ||
4948 | void | |
a4f27e3e | 4949 | sim_close (SIM_DESC sd, int quitting) |
c906108c | 4950 | { |
2ea716f6 | 4951 | /* Nothing to do. */ |
c906108c SS |
4952 | } |
4953 | ||
4954 | /* Called by gdb to load a program into memory. */ | |
4955 | ||
4956 | SIM_RC | |
a4f27e3e | 4957 | sim_load (SIM_DESC sd, char *prog, bfd *abfd, int from_tty) |
c906108c SS |
4958 | { |
4959 | bfd *prog_bfd; | |
4960 | ||
2ea716f6 KH |
4961 | /* FIXME: The code below that sets a specific variant of the H8/300 |
4962 | being simulated should be moved to sim_open(). */ | |
c906108c | 4963 | |
2ea716f6 | 4964 | /* See if the file is for the H8/300 or H8/300H. */ |
c906108c SS |
4965 | /* ??? This may not be the most efficient way. The z8k simulator |
4966 | does this via a different mechanism (INIT_EXTRA_SYMTAB_INFO). */ | |
4967 | if (abfd != NULL) | |
4968 | prog_bfd = abfd; | |
4969 | else | |
4970 | prog_bfd = bfd_openr (prog, "coff-h8300"); | |
4971 | if (prog_bfd != NULL) | |
4972 | { | |
4973 | /* Set the cpu type. We ignore failure from bfd_check_format | |
4974 | and bfd_openr as sim_load_file checks too. */ | |
de9b1892 | 4975 | if (bfd_check_format (prog_bfd, bfd_object)) |
c906108c | 4976 | { |
27ebfdf4 | 4977 | set_h8300h (bfd_get_mach (prog_bfd)); |
c906108c SS |
4978 | } |
4979 | } | |
4980 | ||
4981 | /* If we're using gdb attached to the simulator, then we have to | |
4982 | reallocate memory for the simulator. | |
4983 | ||
4984 | When gdb first starts, it calls fetch_registers (among other | |
4985 | functions), which in turn calls init_pointers, which allocates | |
4986 | simulator memory. | |
4987 | ||
4988 | The problem is when we do that, we don't know whether we're | |
2ea716f6 | 4989 | debugging an H8/300 or H8/300H program. |
c906108c SS |
4990 | |
4991 | This is the first point at which we can make that determination, | |
4992 | so we just reallocate memory now; this will also allow us to handle | |
2ea716f6 | 4993 | switching between H8/300 and H8/300H programs without exiting |
c906108c | 4994 | gdb. */ |
a8cdafbd AV |
4995 | |
4996 | if (h8300smode) | |
4997 | memory_size = H8300S_MSIZE; | |
4998 | else if (h8300hmode) | |
c906108c SS |
4999 | memory_size = H8300H_MSIZE; |
5000 | else | |
5001 | memory_size = H8300_MSIZE; | |
5002 | ||
dc5c3759 MS |
5003 | if (h8_get_memory_buf (sd)) |
5004 | free (h8_get_memory_buf (sd)); | |
5005 | if (h8_get_cache_idx_buf (sd)) | |
5006 | free (h8_get_cache_idx_buf (sd)); | |
5007 | if (h8_get_eightbit_buf (sd)) | |
5008 | free (h8_get_eightbit_buf (sd)); | |
c906108c | 5009 | |
dc5c3759 MS |
5010 | h8_set_memory_buf (sd, (unsigned char *) |
5011 | calloc (sizeof (char), memory_size)); | |
5012 | h8_set_cache_idx_buf (sd, (unsigned short *) | |
5013 | calloc (sizeof (short), memory_size)); | |
5014 | h8_set_eightbit_buf (sd, (unsigned char *) calloc (sizeof (char), 256)); | |
c906108c | 5015 | |
2ea716f6 | 5016 | /* `msize' must be a power of two. */ |
c906108c | 5017 | if ((memory_size & (memory_size - 1)) != 0) |
dc5c3759 MS |
5018 | { |
5019 | (*sim_callback->printf_filtered) (sim_callback, | |
5020 | "sim_load: bad memory size.\n"); | |
5021 | return SIM_RC_FAIL; | |
5022 | } | |
5023 | h8_set_mask (sd, memory_size - 1); | |
c906108c SS |
5024 | |
5025 | if (sim_load_file (sd, myname, sim_callback, prog, prog_bfd, | |
5026 | sim_kind == SIM_OPEN_DEBUG, | |
5027 | 0, sim_write) | |
5028 | == NULL) | |
5029 | { | |
5030 | /* Close the bfd if we opened it. */ | |
5031 | if (abfd == NULL && prog_bfd != NULL) | |
5032 | bfd_close (prog_bfd); | |
5033 | return SIM_RC_FAIL; | |
5034 | } | |
5035 | ||
5036 | /* Close the bfd if we opened it. */ | |
5037 | if (abfd == NULL && prog_bfd != NULL) | |
5038 | bfd_close (prog_bfd); | |
5039 | return SIM_RC_OK; | |
5040 | } | |
5041 | ||
5042 | SIM_RC | |
6b4a8935 | 5043 | sim_create_inferior (SIM_DESC sd, struct bfd *abfd, char **argv, char **env) |
c906108c | 5044 | { |
d1360fb0 V |
5045 | int i = 0; |
5046 | int len_arg = 0; | |
5047 | int no_of_args = 0; | |
dc5c3759 | 5048 | |
c906108c | 5049 | if (abfd != NULL) |
dc5c3759 | 5050 | h8_set_pc (sd, bfd_get_start_address (abfd)); |
c906108c | 5051 | else |
dc5c3759 | 5052 | h8_set_pc (sd, 0); |
d1360fb0 V |
5053 | |
5054 | /* Command Line support. */ | |
5055 | if (argv != NULL) | |
5056 | { | |
5057 | /* Counting the no. of commandline arguments. */ | |
5058 | for (no_of_args = 0; argv[no_of_args] != NULL; no_of_args++) | |
5059 | continue; | |
5060 | ||
5061 | /* Allocating memory for the argv pointers. */ | |
dc5c3759 MS |
5062 | h8_set_command_line (sd, (char **) malloc ((sizeof (char *)) |
5063 | * (no_of_args + 1))); | |
d1360fb0 V |
5064 | |
5065 | for (i = 0; i < no_of_args; i++) | |
5066 | { | |
d1360fb0 | 5067 | /* Copying the argument string. */ |
dc5c3759 | 5068 | h8_set_cmdline_arg (sd, i, (char *) strdup (argv[i])); |
d1360fb0 | 5069 | } |
dc5c3759 | 5070 | h8_set_cmdline_arg (sd, i, NULL); |
d1360fb0 V |
5071 | } |
5072 | ||
c906108c SS |
5073 | return SIM_RC_OK; |
5074 | } | |
5075 | ||
5076 | void | |
a4f27e3e | 5077 | sim_do_command (SIM_DESC sd, char *cmd) |
c906108c SS |
5078 | { |
5079 | (*sim_callback->printf_filtered) (sim_callback, | |
5080 | "This simulator does not accept any commands.\n"); | |
5081 | } | |
5082 | ||
5083 | void | |
a4f27e3e | 5084 | sim_set_callbacks (struct host_callback_struct *ptr) |
c906108c SS |
5085 | { |
5086 | sim_callback = ptr; | |
5087 | } |