Commit | Line | Data |
---|---|---|
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 | |
59768597 | 56 | #define SP (h8300hmode && !h8300_normal_mode ? 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; | |
59768597 | 513 | int h8300_normal_mode = 0; |
dc5c3759 | 514 | int h8300sxmode = 0; |
c906108c | 515 | |
dc5c3759 | 516 | static int memory_size; |
c906108c | 517 | |
dc5c3759 MS |
518 | static int |
519 | get_now (void) | |
520 | { | |
521 | return time (0); /* WinXX HAS UNIX like 'time', so why not use it? */ | |
522 | } | |
c906108c | 523 | |
dc5c3759 MS |
524 | static int |
525 | now_persec (void) | |
526 | { | |
527 | return 1; | |
528 | } | |
c906108c | 529 | |
dc5c3759 MS |
530 | static int |
531 | bitfrom (int x) | |
532 | { | |
533 | switch (x & SIZE) | |
534 | { | |
535 | case L_8: | |
536 | return SB; | |
537 | case L_16: | |
538 | case L_16U: | |
539 | return SW; | |
540 | case L_32: | |
541 | return SL; | |
542 | case L_P: | |
59768597 | 543 | return (h8300hmode && !h8300_normal_mode)? SL : SW; |
c906108c | 544 | } |
dc5c3759 | 545 | return 0; |
c906108c SS |
546 | } |
547 | ||
dc5c3759 MS |
548 | /* Simulate an indirection / dereference. |
549 | return 0 for success, -1 for failure. | |
550 | */ | |
c906108c | 551 | |
dc5c3759 MS |
552 | static unsigned int |
553 | lvalue (SIM_DESC sd, int x, int rn, unsigned int *val) | |
c906108c | 554 | { |
dc5c3759 MS |
555 | if (val == NULL) /* Paranoia. */ |
556 | return -1; | |
c906108c | 557 | |
dc5c3759 | 558 | switch (x / 4) |
c906108c | 559 | { |
dc5c3759 MS |
560 | case OP_DISP: |
561 | if (rn == ZERO_REGNUM) | |
562 | *val = X (OP_IMM, SP); | |
563 | else | |
564 | *val = X (OP_REG, SP); | |
c906108c | 565 | break; |
dc5c3759 MS |
566 | case OP_MEM: |
567 | *val = X (OP_MEM, SP); | |
c906108c SS |
568 | break; |
569 | default: | |
dc5c3759 MS |
570 | sim_engine_set_run_state (sd, sim_stopped, SIGSEGV); |
571 | return -1; | |
c906108c | 572 | } |
dc5c3759 | 573 | return 0; |
c906108c SS |
574 | } |
575 | ||
dc5c3759 MS |
576 | static int |
577 | cmdline_location() | |
c906108c | 578 | { |
59768597 | 579 | if (h8300smode && !h8300_normal_mode) |
dc5c3759 | 580 | return 0xffff00L; |
59768597 | 581 | else if (h8300hmode && !h8300_normal_mode) |
dc5c3759 MS |
582 | return 0x2ff00L; |
583 | else | |
584 | return 0xff00L; | |
c906108c SS |
585 | } |
586 | ||
de9b1892 | 587 | static void |
dc5c3759 | 588 | decode (SIM_DESC sd, int addr, unsigned char *data, decoded_inst *dst) |
c906108c | 589 | { |
dc5c3759 MS |
590 | int cst[3] = {0, 0, 0}; |
591 | int reg[3] = {0, 0, 0}; | |
592 | int rdisp[3] = {0, 0, 0}; | |
593 | int opnum; | |
594 | const struct h8_opcode *q; | |
c906108c | 595 | |
dc5c3759 MS |
596 | dst->dst.type = -1; |
597 | dst->src.type = -1; | |
c906108c | 598 | |
dc5c3759 MS |
599 | /* Find the exact opcode/arg combo. */ |
600 | for (q = h8_opcodes; q->name; q++) | |
601 | { | |
602 | op_type *nib = q->data.nib; | |
603 | unsigned int len = 0; | |
c906108c | 604 | |
dc5c3759 | 605 | if ((q->available == AV_H8SX && !h8300sxmode) || |
9f70f8ec | 606 | (q->available == AV_H8S && !h8300smode) || |
dc5c3759 MS |
607 | (q->available == AV_H8H && !h8300hmode)) |
608 | continue; | |
c906108c | 609 | |
f408565c MS |
610 | cst[0] = cst[1] = cst[2] = 0; |
611 | reg[0] = reg[1] = reg[2] = 0; | |
612 | rdisp[0] = rdisp[1] = rdisp[2] = 0; | |
613 | ||
dc5c3759 | 614 | while (1) |
c906108c | 615 | { |
dc5c3759 MS |
616 | op_type looking_for = *nib; |
617 | int thisnib = data[len / 2]; | |
c906108c | 618 | |
dc5c3759 MS |
619 | thisnib = (len & 1) ? (thisnib & 0xf) : ((thisnib >> 4) & 0xf); |
620 | opnum = ((looking_for & OP3) ? 2 : | |
621 | (looking_for & DST) ? 1 : 0); | |
622 | ||
623 | if (looking_for < 16 && looking_for >= 0) | |
c906108c | 624 | { |
dc5c3759 MS |
625 | if (looking_for != thisnib) |
626 | goto fail; | |
c906108c | 627 | } |
dc5c3759 | 628 | else |
c906108c | 629 | { |
dc5c3759 | 630 | if (looking_for & B31) |
c906108c | 631 | { |
dc5c3759 MS |
632 | if (!((thisnib & 0x8) != 0)) |
633 | goto fail; | |
634 | ||
635 | looking_for = (op_type) (looking_for & ~B31); | |
636 | thisnib &= 0x7; | |
c906108c | 637 | } |
dc5c3759 | 638 | else if (looking_for & B30) |
c906108c | 639 | { |
dc5c3759 MS |
640 | if (!((thisnib & 0x8) == 0)) |
641 | goto fail; | |
642 | ||
643 | looking_for = (op_type) (looking_for & ~B30); | |
c906108c | 644 | } |
c906108c | 645 | |
dc5c3759 MS |
646 | if (looking_for & B21) |
647 | { | |
648 | if (!((thisnib & 0x4) != 0)) | |
649 | goto fail; | |
c906108c | 650 | |
dc5c3759 MS |
651 | looking_for = (op_type) (looking_for & ~B21); |
652 | thisnib &= 0xb; | |
653 | } | |
654 | else if (looking_for & B20) | |
655 | { | |
656 | if (!((thisnib & 0x4) == 0)) | |
657 | goto fail; | |
c906108c | 658 | |
dc5c3759 MS |
659 | looking_for = (op_type) (looking_for & ~B20); |
660 | } | |
c906108c | 661 | |
dc5c3759 MS |
662 | if (looking_for & B11) |
663 | { | |
664 | if (!((thisnib & 0x2) != 0)) | |
665 | goto fail; | |
c906108c | 666 | |
dc5c3759 MS |
667 | looking_for = (op_type) (looking_for & ~B11); |
668 | thisnib &= 0xd; | |
669 | } | |
670 | else if (looking_for & B10) | |
671 | { | |
672 | if (!((thisnib & 0x2) == 0)) | |
673 | goto fail; | |
c906108c | 674 | |
dc5c3759 MS |
675 | looking_for = (op_type) (looking_for & ~B10); |
676 | } | |
c906108c | 677 | |
dc5c3759 MS |
678 | if (looking_for & B01) |
679 | { | |
680 | if (!((thisnib & 0x1) != 0)) | |
681 | goto fail; | |
c906108c | 682 | |
dc5c3759 MS |
683 | looking_for = (op_type) (looking_for & ~B01); |
684 | thisnib &= 0xe; | |
685 | } | |
686 | else if (looking_for & B00) | |
687 | { | |
688 | if (!((thisnib & 0x1) == 0)) | |
689 | goto fail; | |
c906108c | 690 | |
dc5c3759 MS |
691 | looking_for = (op_type) (looking_for & ~B00); |
692 | } | |
c906108c | 693 | |
dc5c3759 MS |
694 | if (looking_for & IGNORE) |
695 | { | |
696 | /* Hitachi has declared that IGNORE must be zero. */ | |
697 | if (thisnib != 0) | |
698 | goto fail; | |
699 | } | |
700 | else if ((looking_for & MODE) == DATA) | |
701 | { | |
702 | ; /* Skip embedded data. */ | |
703 | } | |
704 | else if ((looking_for & MODE) == DBIT) | |
705 | { | |
706 | /* Exclude adds/subs by looking at bit 0 and 2, and | |
707 | make sure the operand size, either w or l, | |
708 | matches by looking at bit 1. */ | |
709 | if ((looking_for & 7) != (thisnib & 7)) | |
710 | goto fail; | |
c906108c | 711 | |
dc5c3759 MS |
712 | cst[opnum] = (thisnib & 0x8) ? 2 : 1; |
713 | } | |
714 | else if ((looking_for & MODE) == REG || | |
715 | (looking_for & MODE) == LOWREG || | |
716 | (looking_for & MODE) == IND || | |
717 | (looking_for & MODE) == PREINC || | |
718 | (looking_for & MODE) == POSTINC || | |
719 | (looking_for & MODE) == PREDEC || | |
720 | (looking_for & MODE) == POSTDEC) | |
721 | { | |
722 | reg[opnum] = thisnib; | |
723 | } | |
724 | else if (looking_for & CTRL) | |
725 | { | |
726 | thisnib &= 7; | |
727 | if (((looking_for & MODE) == CCR && (thisnib != C_CCR)) || | |
728 | ((looking_for & MODE) == EXR && (thisnib != C_EXR)) || | |
729 | ((looking_for & MODE) == MACH && (thisnib != C_MACH)) || | |
730 | ((looking_for & MODE) == MACL && (thisnib != C_MACL)) || | |
731 | ((looking_for & MODE) == VBR && (thisnib != C_VBR)) || | |
732 | ((looking_for & MODE) == SBR && (thisnib != C_SBR))) | |
733 | goto fail; | |
734 | if (((looking_for & MODE) == CCR_EXR && | |
735 | (thisnib != C_CCR && thisnib != C_EXR)) || | |
736 | ((looking_for & MODE) == VBR_SBR && | |
737 | (thisnib != C_VBR && thisnib != C_SBR)) || | |
738 | ((looking_for & MODE) == MACREG && | |
739 | (thisnib != C_MACH && thisnib != C_MACL))) | |
740 | goto fail; | |
741 | if (((looking_for & MODE) == CC_EX_VB_SB && | |
742 | (thisnib != C_CCR && thisnib != C_EXR && | |
743 | thisnib != C_VBR && thisnib != C_SBR))) | |
744 | goto fail; | |
c906108c | 745 | |
dc5c3759 MS |
746 | reg[opnum] = thisnib; |
747 | } | |
748 | else if ((looking_for & MODE) == ABS) | |
749 | { | |
750 | /* Absolute addresses are unsigned. */ | |
751 | switch (looking_for & SIZE) | |
752 | { | |
753 | case L_8: | |
754 | cst[opnum] = UEXTCHAR (data[len / 2]); | |
755 | break; | |
756 | case L_16: | |
757 | case L_16U: | |
758 | cst[opnum] = (data[len / 2] << 8) + data[len / 2 + 1]; | |
759 | break; | |
760 | case L_32: | |
761 | cst[opnum] = | |
762 | (data[len / 2 + 0] << 24) + | |
763 | (data[len / 2 + 1] << 16) + | |
764 | (data[len / 2 + 2] << 8) + | |
765 | (data[len / 2 + 3]); | |
766 | break; | |
767 | default: | |
768 | printf ("decode: bad size ABS: %d\n", | |
769 | (looking_for & SIZE)); | |
770 | goto end; | |
771 | } | |
772 | } | |
773 | else if ((looking_for & MODE) == DISP || | |
774 | (looking_for & MODE) == PCREL || | |
775 | (looking_for & MODE) == INDEXB || | |
776 | (looking_for & MODE) == INDEXW || | |
777 | (looking_for & MODE) == INDEXL) | |
dc5c3759 MS |
778 | { |
779 | switch (looking_for & SIZE) | |
780 | { | |
781 | case L_2: | |
782 | cst[opnum] = thisnib & 3; | |
dc5c3759 MS |
783 | break; |
784 | case L_8: | |
785 | cst[opnum] = SEXTCHAR (data[len / 2]); | |
786 | break; | |
787 | case L_16: | |
788 | cst[opnum] = (data[len / 2] << 8) + data[len / 2 + 1]; | |
789 | cst[opnum] = (short) cst[opnum]; /* Sign extend. */ | |
790 | break; | |
791 | case L_16U: | |
792 | cst[opnum] = (data[len / 2] << 8) + data[len / 2 + 1]; | |
793 | break; | |
794 | case L_32: | |
795 | cst[opnum] = | |
796 | (data[len / 2 + 0] << 24) + | |
797 | (data[len / 2 + 1] << 16) + | |
798 | (data[len / 2 + 2] << 8) + | |
799 | (data[len / 2 + 3]); | |
800 | break; | |
801 | default: | |
802 | printf ("decode: bad size DISP/PCREL/INDEX: %d\n", | |
803 | (looking_for & SIZE)); | |
804 | goto end; | |
805 | } | |
806 | } | |
807 | else if ((looking_for & SIZE) == L_16 || | |
808 | (looking_for & SIZE) == L_16U) | |
809 | { | |
810 | cst[opnum] = (data[len / 2] << 8) + data[len / 2 + 1]; | |
0f42aa71 MS |
811 | /* Immediates are always unsigned. */ |
812 | if ((looking_for & SIZE) != L_16U && | |
813 | (looking_for & MODE) != IMM) | |
dc5c3759 MS |
814 | cst[opnum] = (short) cst[opnum]; /* Sign extend. */ |
815 | } | |
816 | else if (looking_for & ABSJMP) | |
817 | { | |
818 | switch (looking_for & SIZE) { | |
819 | case L_24: | |
820 | cst[opnum] = (data[1] << 16) | (data[2] << 8) | (data[3]); | |
821 | break; | |
822 | case L_32: | |
823 | cst[opnum] = | |
824 | (data[len / 2 + 0] << 24) + | |
825 | (data[len / 2 + 1] << 16) + | |
826 | (data[len / 2 + 2] << 8) + | |
827 | (data[len / 2 + 3]); | |
828 | break; | |
829 | default: | |
830 | printf ("decode: bad size ABSJMP: %d\n", | |
831 | (looking_for & SIZE)); | |
832 | goto end; | |
833 | } | |
834 | } | |
835 | else if ((looking_for & MODE) == MEMIND) | |
836 | { | |
837 | cst[opnum] = data[1]; | |
838 | } | |
9f70f8ec MS |
839 | else if ((looking_for & MODE) == VECIND) |
840 | { | |
59768597 SA |
841 | if(h8300_normal_mode) |
842 | cst[opnum] = ((data[1] & 0x7f) + 0x80) * 2; | |
843 | else | |
844 | cst[opnum] = ((data[1] & 0x7f) + 0x80) * 4; | |
9f70f8ec MS |
845 | cst[opnum] += h8_get_vbr (sd); /* Add vector base reg. */ |
846 | } | |
dc5c3759 MS |
847 | else if ((looking_for & SIZE) == L_32) |
848 | { | |
849 | int i = len / 2; | |
6147b1f6 | 850 | |
dc5c3759 MS |
851 | cst[opnum] = |
852 | (data[i + 0] << 24) | | |
853 | (data[i + 1] << 16) | | |
854 | (data[i + 2] << 8) | | |
855 | (data[i + 3]); | |
856 | } | |
857 | else if ((looking_for & SIZE) == L_24) | |
858 | { | |
859 | int i = len / 2; | |
6147b1f6 | 860 | |
dc5c3759 MS |
861 | cst[opnum] = |
862 | (data[i + 0] << 16) | | |
863 | (data[i + 1] << 8) | | |
864 | (data[i + 2]); | |
865 | } | |
866 | else if (looking_for & DISPREG) | |
867 | { | |
868 | rdisp[opnum] = thisnib & 0x7; | |
869 | } | |
870 | else if ((looking_for & MODE) == KBIT) | |
871 | { | |
872 | switch (thisnib) | |
873 | { | |
874 | case 9: | |
875 | cst[opnum] = 4; | |
876 | break; | |
877 | case 8: | |
878 | cst[opnum] = 2; | |
879 | break; | |
880 | case 0: | |
881 | cst[opnum] = 1; | |
882 | break; | |
883 | default: | |
884 | goto fail; | |
885 | } | |
886 | } | |
887 | else if ((looking_for & SIZE) == L_8) | |
888 | { | |
889 | if ((looking_for & MODE) == ABS) | |
890 | { | |
891 | /* Will be combined with contents of SBR_REGNUM | |
892 | by fetch (). For all modes except h8sx, this | |
893 | will always contain the value 0xFFFFFF00. */ | |
894 | cst[opnum] = data[len / 2] & 0xff; | |
895 | } | |
896 | else | |
897 | { | |
898 | cst[opnum] = data[len / 2] & 0xff; | |
899 | } | |
900 | } | |
9f70f8ec MS |
901 | else if ((looking_for & SIZE) == L_2) |
902 | { | |
903 | cst[opnum] = thisnib & 3; | |
904 | } | |
dc5c3759 MS |
905 | else if ((looking_for & SIZE) == L_3 || |
906 | (looking_for & SIZE) == L_3NZ) | |
907 | { | |
908 | cst[opnum] = thisnib & 7; | |
909 | if (cst[opnum] == 0 && (looking_for & SIZE) == L_3NZ) | |
910 | goto fail; | |
911 | } | |
912 | else if ((looking_for & SIZE) == L_4) | |
913 | { | |
914 | cst[opnum] = thisnib & 15; | |
915 | } | |
916 | else if ((looking_for & SIZE) == L_5) | |
917 | { | |
918 | cst[opnum] = data[len / 2] & 0x1f; | |
919 | } | |
920 | else if (looking_for == E) | |
921 | { | |
922 | #ifdef ADEBUG | |
923 | dst->op = q; | |
924 | #endif | |
925 | /* Fill in the args. */ | |
926 | { | |
927 | op_type *args = q->args.nib; | |
928 | int hadone = 0; | |
929 | int nargs; | |
6147b1f6 | 930 | |
dc5c3759 MS |
931 | for (nargs = 0; |
932 | nargs < 3 && *args != E; | |
933 | nargs++) | |
934 | { | |
935 | int x = *args; | |
936 | ea_type *p; | |
c906108c | 937 | |
dc5c3759 MS |
938 | opnum = ((x & OP3) ? 2 : |
939 | (x & DST) ? 1 : 0); | |
940 | if (x & DST) | |
941 | p = &dst->dst; | |
942 | else if (x & OP3) | |
943 | p = &dst->op3; | |
944 | else | |
945 | p = &dst->src; | |
c906108c | 946 | |
dc5c3759 MS |
947 | if ((x & MODE) == IMM || |
948 | (x & MODE) == KBIT || | |
949 | (x & MODE) == DBIT) | |
950 | { | |
951 | /* Use the instruction to determine | |
952 | the operand size. */ | |
953 | p->type = X (OP_IMM, OP_SIZE (q->how)); | |
954 | p->literal = cst[opnum]; | |
955 | } | |
956 | else if ((x & MODE) == CONST_2 || | |
957 | (x & MODE) == CONST_4 || | |
958 | (x & MODE) == CONST_8 || | |
959 | (x & MODE) == CONST_16) | |
960 | { | |
961 | /* Use the instruction to determine | |
962 | the operand size. */ | |
963 | p->type = X (OP_IMM, OP_SIZE (q->how)); | |
964 | switch (x & MODE) { | |
965 | case CONST_2: p->literal = 2; break; | |
966 | case CONST_4: p->literal = 4; break; | |
967 | case CONST_8: p->literal = 8; break; | |
968 | case CONST_16: p->literal = 16; break; | |
969 | } | |
970 | } | |
971 | else if ((x & MODE) == REG) | |
972 | { | |
973 | p->type = X (OP_REG, bitfrom (x)); | |
974 | p->reg = reg[opnum]; | |
975 | } | |
976 | else if ((x & MODE) == LOWREG) | |
977 | { | |
978 | p->type = X (OP_LOWREG, bitfrom (x)); | |
979 | p->reg = reg[opnum]; | |
980 | } | |
981 | else if ((x & MODE) == PREINC) | |
982 | { | |
983 | /* Use the instruction to determine | |
984 | the operand size. */ | |
985 | p->type = X (OP_PREINC, OP_SIZE (q->how)); | |
986 | p->reg = reg[opnum] & 0x7; | |
987 | } | |
988 | else if ((x & MODE) == POSTINC) | |
989 | { | |
990 | /* Use the instruction to determine | |
991 | the operand size. */ | |
992 | p->type = X (OP_POSTINC, OP_SIZE (q->how)); | |
993 | p->reg = reg[opnum] & 0x7; | |
994 | } | |
995 | else if ((x & MODE) == PREDEC) | |
996 | { | |
997 | /* Use the instruction to determine | |
998 | the operand size. */ | |
999 | p->type = X (OP_PREDEC, OP_SIZE (q->how)); | |
1000 | p->reg = reg[opnum] & 0x7; | |
1001 | } | |
1002 | else if ((x & MODE) == POSTDEC) | |
1003 | { | |
1004 | /* Use the instruction to determine | |
1005 | the operand size. */ | |
1006 | p->type = X (OP_POSTDEC, OP_SIZE (q->how)); | |
1007 | p->reg = reg[opnum] & 0x7; | |
1008 | } | |
1009 | else if ((x & MODE) == IND) | |
1010 | { | |
1011 | /* Note: an indirect is transformed into | |
1012 | a displacement of zero. | |
1013 | */ | |
1014 | /* Use the instruction to determine | |
1015 | the operand size. */ | |
1016 | p->type = X (OP_DISP, OP_SIZE (q->how)); | |
1017 | p->reg = reg[opnum] & 0x7; | |
1018 | p->literal = 0; | |
1019 | if (OP_KIND (q->how) == O_JSR || | |
1020 | OP_KIND (q->how) == O_JMP) | |
1021 | if (lvalue (sd, p->type, p->reg, &p->type)) | |
1022 | goto end; | |
1023 | } | |
1024 | else if ((x & MODE) == ABS) | |
1025 | { | |
1026 | /* Note: a 16 or 32 bit ABS is transformed into a | |
1027 | displacement from pseudo-register ZERO_REGNUM, | |
1028 | which is always zero. An 8 bit ABS becomes | |
1029 | a displacement from SBR_REGNUM. | |
1030 | */ | |
1031 | /* Use the instruction to determine | |
1032 | the operand size. */ | |
1033 | p->type = X (OP_DISP, OP_SIZE (q->how)); | |
1034 | p->literal = cst[opnum]; | |
1035 | ||
1036 | /* 8-bit ABS is displacement from SBR. | |
1037 | 16 and 32-bit ABS are displacement from ZERO. | |
1038 | (SBR will always be zero except for h8/sx) | |
1039 | */ | |
1040 | if ((x & SIZE) == L_8) | |
1041 | p->reg = SBR_REGNUM; | |
1042 | else | |
1043 | p->reg = ZERO_REGNUM;; | |
1044 | } | |
9f70f8ec MS |
1045 | else if ((x & MODE) == MEMIND || |
1046 | (x & MODE) == VECIND) | |
dc5c3759 MS |
1047 | { |
1048 | /* Size doesn't matter. */ | |
1049 | p->type = X (OP_MEM, SB); | |
1050 | p->literal = cst[opnum]; | |
1051 | if (OP_KIND (q->how) == O_JSR || | |
1052 | OP_KIND (q->how) == O_JMP) | |
1053 | if (lvalue (sd, p->type, p->reg, &p->type)) | |
1054 | goto end; | |
1055 | } | |
1056 | else if ((x & MODE) == PCREL) | |
1057 | { | |
1058 | /* Size doesn't matter. */ | |
1059 | p->type = X (OP_PCREL, SB); | |
1060 | p->literal = cst[opnum]; | |
1061 | } | |
1062 | else if (x & ABSJMP) | |
1063 | { | |
1064 | p->type = X (OP_IMM, SP); | |
1065 | p->literal = cst[opnum]; | |
1066 | } | |
f408565c | 1067 | else if ((x & MODE) == INDEXB) |
dc5c3759 | 1068 | { |
f408565c MS |
1069 | p->type = X (OP_INDEXB, OP_SIZE (q->how)); |
1070 | p->literal = cst[opnum]; | |
1071 | p->reg = rdisp[opnum]; | |
1072 | } | |
1073 | else if ((x & MODE) == INDEXW) | |
1074 | { | |
1075 | p->type = X (OP_INDEXW, OP_SIZE (q->how)); | |
dc5c3759 MS |
1076 | p->literal = cst[opnum]; |
1077 | p->reg = rdisp[opnum]; | |
1078 | } | |
f408565c MS |
1079 | else if ((x & MODE) == INDEXL) |
1080 | { | |
1081 | p->type = X (OP_INDEXL, OP_SIZE (q->how)); | |
1082 | p->literal = cst[opnum]; | |
1083 | p->reg = rdisp[opnum]; | |
1084 | } | |
1085 | else if ((x & MODE) == DISP) | |
1086 | { | |
1087 | /* Yuck -- special for mova args. */ | |
1088 | if (strncmp (q->name, "mova", 4) == 0 && | |
1089 | (x & SIZE) == L_2) | |
1090 | { | |
1091 | /* Mova can have a DISP2 dest, with an | |
1092 | INDEXB or INDEXW src. The multiplier | |
1093 | for the displacement value is determined | |
1094 | by the src operand, not by the insn. */ | |
1095 | ||
1096 | switch (OP_KIND (dst->src.type)) | |
1097 | { | |
1098 | case OP_INDEXB: | |
1099 | p->type = X (OP_DISP, SB); | |
1100 | p->literal = cst[opnum]; | |
1101 | break; | |
1102 | case OP_INDEXW: | |
1103 | p->type = X (OP_DISP, SW); | |
1104 | p->literal = cst[opnum] * 2; | |
1105 | break; | |
1106 | default: | |
1107 | goto fail; | |
1108 | } | |
1109 | } | |
1110 | else | |
1111 | { | |
1112 | p->type = X (OP_DISP, OP_SIZE (q->how)); | |
1113 | p->literal = cst[opnum]; | |
1114 | /* DISP2 is special. */ | |
1115 | if ((x & SIZE) == L_2) | |
1116 | switch (OP_SIZE (q->how)) | |
1117 | { | |
1118 | case SB: break; | |
1119 | case SW: p->literal *= 2; break; | |
1120 | case SL: p->literal *= 4; break; | |
1121 | } | |
1122 | } | |
1123 | p->reg = rdisp[opnum]; | |
1124 | } | |
dc5c3759 MS |
1125 | else if (x & CTRL) |
1126 | { | |
1127 | switch (reg[opnum]) | |
1128 | { | |
1129 | case C_CCR: | |
1130 | p->type = X (OP_CCR, SB); | |
1131 | break; | |
1132 | case C_EXR: | |
1133 | p->type = X (OP_EXR, SB); | |
1134 | break; | |
1135 | case C_MACH: | |
1136 | p->type = X (OP_MACH, SL); | |
1137 | break; | |
1138 | case C_MACL: | |
1139 | p->type = X (OP_MACL, SL); | |
1140 | break; | |
1141 | case C_VBR: | |
1142 | p->type = X (OP_VBR, SL); | |
1143 | break; | |
1144 | case C_SBR: | |
1145 | p->type = X (OP_SBR, SL); | |
1146 | break; | |
1147 | } | |
1148 | } | |
1149 | else if ((x & MODE) == CCR) | |
1150 | { | |
1151 | p->type = OP_CCR; | |
1152 | } | |
1153 | else if ((x & MODE) == EXR) | |
1154 | { | |
1155 | p->type = OP_EXR; | |
1156 | } | |
1157 | else | |
9f70f8ec | 1158 | printf ("Hmmmm 0x%x...\n", x); |
c906108c | 1159 | |
dc5c3759 MS |
1160 | args++; |
1161 | } | |
1162 | } | |
c906108c | 1163 | |
dc5c3759 MS |
1164 | /* Unary operators: treat src and dst as equivalent. */ |
1165 | if (dst->dst.type == -1) | |
1166 | dst->dst = dst->src; | |
1167 | if (dst->src.type == -1) | |
1168 | dst->src = dst->dst; | |
1169 | ||
1170 | dst->opcode = q->how; | |
1171 | dst->cycles = q->time; | |
c906108c | 1172 | |
dc5c3759 MS |
1173 | /* And jsr's to these locations are turned into |
1174 | magic traps. */ | |
fc974602 | 1175 | |
dc5c3759 MS |
1176 | if (OP_KIND (dst->opcode) == O_JSR) |
1177 | { | |
1178 | switch (dst->src.literal) | |
1179 | { | |
1180 | case 0xc5: | |
1181 | dst->opcode = O (O_SYS_OPEN, SB); | |
1182 | break; | |
1183 | case 0xc6: | |
1184 | dst->opcode = O (O_SYS_READ, SB); | |
1185 | break; | |
1186 | case 0xc7: | |
1187 | dst->opcode = O (O_SYS_WRITE, SB); | |
1188 | break; | |
1189 | case 0xc8: | |
1190 | dst->opcode = O (O_SYS_LSEEK, SB); | |
1191 | break; | |
1192 | case 0xc9: | |
1193 | dst->opcode = O (O_SYS_CLOSE, SB); | |
1194 | break; | |
1195 | case 0xca: | |
1196 | dst->opcode = O (O_SYS_STAT, SB); | |
1197 | break; | |
1198 | case 0xcb: | |
1199 | dst->opcode = O (O_SYS_FSTAT, SB); | |
1200 | break; | |
1201 | case 0xcc: | |
1202 | dst->opcode = O (O_SYS_CMDLINE, SB); | |
1203 | break; | |
1204 | } | |
1205 | /* End of Processing for system calls. */ | |
1206 | } | |
1207 | ||
1208 | dst->next_pc = addr + len / 2; | |
1209 | return; | |
1210 | } | |
1211 | else | |
9f70f8ec | 1212 | printf ("Don't understand 0x%x \n", looking_for); |
dc5c3759 MS |
1213 | } |
1214 | ||
1215 | len++; | |
1216 | nib++; | |
1217 | } | |
1218 | ||
1219 | fail: | |
1220 | ; | |
1221 | } | |
1222 | end: | |
1223 | /* Fell off the end. */ | |
1224 | dst->opcode = O (O_ILL, SB); | |
1225 | } | |
1226 | ||
1227 | static void | |
1228 | compile (SIM_DESC sd, int pc) | |
1229 | { | |
1230 | int idx; | |
1231 | ||
1232 | /* Find the next cache entry to use. */ | |
1233 | idx = h8_get_cache_top (sd) + 1; | |
1234 | h8_increment_compiles (sd); | |
1235 | if (idx >= sd->sim_cache_size) | |
c906108c | 1236 | { |
dc5c3759 MS |
1237 | idx = 1; |
1238 | } | |
1239 | h8_set_cache_top (sd, idx); | |
c906108c | 1240 | |
dc5c3759 MS |
1241 | /* Throw away its old meaning. */ |
1242 | h8_set_cache_idx (sd, sd->sim_cache[idx].oldpc, 0); | |
1243 | ||
1244 | /* Set to new address. */ | |
1245 | sd->sim_cache[idx].oldpc = pc; | |
c906108c | 1246 | |
dc5c3759 MS |
1247 | /* Fill in instruction info. */ |
1248 | decode (sd, pc, h8_get_memory_buf (sd) + pc, sd->sim_cache + idx); | |
c906108c | 1249 | |
dc5c3759 MS |
1250 | /* Point to new cache entry. */ |
1251 | h8_set_cache_idx (sd, pc, idx); | |
1252 | } | |
c906108c SS |
1253 | |
1254 | ||
dc5c3759 MS |
1255 | static unsigned char *breg[32]; |
1256 | static unsigned short *wreg[16]; | |
1257 | static unsigned int *lreg[18]; | |
1258 | ||
1259 | #define GET_B_REG(X) *(breg[X]) | |
1260 | #define SET_B_REG(X, Y) (*(breg[X])) = (Y) | |
1261 | #define GET_W_REG(X) *(wreg[X]) | |
1262 | #define SET_W_REG(X, Y) (*(wreg[X])) = (Y) | |
1263 | #define GET_L_REG(X) h8_get_reg (sd, X) | |
1264 | #define SET_L_REG(X, Y) h8_set_reg (sd, X, Y) | |
1265 | ||
1266 | #define GET_MEMORY_L(X) \ | |
1267 | ((X) < memory_size \ | |
1268 | ? ((h8_get_memory (sd, (X)+0) << 24) | (h8_get_memory (sd, (X)+1) << 16) \ | |
1269 | | (h8_get_memory (sd, (X)+2) << 8) | (h8_get_memory (sd, (X)+3) << 0)) \ | |
1270 | : ((h8_get_eightbit (sd, ((X)+0) & 0xff) << 24) \ | |
1271 | | (h8_get_eightbit (sd, ((X)+1) & 0xff) << 16) \ | |
1272 | | (h8_get_eightbit (sd, ((X)+2) & 0xff) << 8) \ | |
1273 | | (h8_get_eightbit (sd, ((X)+3) & 0xff) << 0))) | |
1274 | ||
1275 | #define GET_MEMORY_W(X) \ | |
1276 | ((X) < memory_size \ | |
1277 | ? ((h8_get_memory (sd, (X)+0) << 8) \ | |
1278 | | (h8_get_memory (sd, (X)+1) << 0)) \ | |
1279 | : ((h8_get_eightbit (sd, ((X)+0) & 0xff) << 8) \ | |
1280 | | (h8_get_eightbit (sd, ((X)+1) & 0xff) << 0))) | |
1281 | ||
1282 | ||
1283 | #define GET_MEMORY_B(X) \ | |
1284 | ((X) < memory_size ? (h8_get_memory (sd, (X))) \ | |
1285 | : (h8_get_eightbit (sd, (X) & 0xff))) | |
1286 | ||
1287 | #define SET_MEMORY_L(X, Y) \ | |
1288 | { register unsigned char *_p; register int __y = (Y); \ | |
1289 | _p = ((X) < memory_size ? h8_get_memory_buf (sd) + (X) : \ | |
1290 | h8_get_eightbit_buf (sd) + ((X) & 0xff)); \ | |
1291 | _p[0] = __y >> 24; _p[1] = __y >> 16; \ | |
1292 | _p[2] = __y >> 8; _p[3] = __y >> 0; \ | |
1293 | } | |
c906108c | 1294 | |
dc5c3759 MS |
1295 | #define SET_MEMORY_W(X, Y) \ |
1296 | { register unsigned char *_p; register int __y = (Y); \ | |
1297 | _p = ((X) < memory_size ? h8_get_memory_buf (sd) + (X) : \ | |
1298 | h8_get_eightbit_buf (sd) + ((X) & 0xff)); \ | |
1299 | _p[0] = __y >> 8; _p[1] = __y; \ | |
1300 | } | |
c906108c | 1301 | |
dc5c3759 MS |
1302 | #define SET_MEMORY_B(X, Y) \ |
1303 | ((X) < memory_size ? (h8_set_memory (sd, (X), (Y))) \ | |
1304 | : (h8_set_eightbit (sd, (X) & 0xff, (Y)))) | |
c906108c | 1305 | |
dc5c3759 MS |
1306 | /* Simulate a memory fetch. |
1307 | Return 0 for success, -1 for failure. | |
1308 | */ | |
c906108c | 1309 | |
dc5c3759 MS |
1310 | static int |
1311 | fetch_1 (SIM_DESC sd, ea_type *arg, int *val, int twice) | |
1312 | { | |
1313 | int rn = arg->reg; | |
1314 | int abs = arg->literal; | |
1315 | int r; | |
1316 | int t; | |
1317 | ||
1318 | if (val == NULL) | |
1319 | return -1; /* Paranoia. */ | |
1320 | ||
1321 | switch (arg->type) | |
1322 | { | |
1323 | /* Indexed register plus displacement mode: | |
1324 | ||
1325 | This new family of addressing modes are similar to OP_DISP | |
1326 | (register plus displacement), with two differences: | |
1327 | 1) INDEXB uses only the least significant byte of the register, | |
1328 | INDEXW uses only the least significant word, and | |
1329 | INDEXL uses the entire register (just like OP_DISP). | |
1330 | and | |
1331 | 2) The displacement value in abs is multiplied by two | |
1332 | for SW-sized operations, and by four for SL-size. | |
1333 | ||
1334 | This gives nine possible variations. | |
1335 | */ | |
1336 | ||
1337 | case X (OP_INDEXB, SB): | |
1338 | case X (OP_INDEXB, SW): | |
1339 | case X (OP_INDEXB, SL): | |
1340 | case X (OP_INDEXW, SB): | |
1341 | case X (OP_INDEXW, SW): | |
1342 | case X (OP_INDEXW, SL): | |
1343 | case X (OP_INDEXL, SB): | |
1344 | case X (OP_INDEXL, SW): | |
1345 | case X (OP_INDEXL, SL): | |
1346 | t = GET_L_REG (rn); | |
1347 | switch (OP_KIND (arg->type)) { | |
1348 | case OP_INDEXB: t &= 0xff; break; | |
1349 | case OP_INDEXW: t &= 0xffff; break; | |
1350 | case OP_INDEXL: | |
1351 | default: break; | |
1352 | } | |
1353 | switch (OP_SIZE (arg->type)) { | |
1354 | case SB: | |
1355 | *val = GET_MEMORY_B ((t * 1 + abs) & h8_get_mask (sd)); | |
1356 | break; | |
1357 | case SW: | |
1358 | *val = GET_MEMORY_W ((t * 2 + abs) & h8_get_mask (sd)); | |
1359 | break; | |
1360 | case SL: | |
1361 | *val = GET_MEMORY_L ((t * 4 + abs) & h8_get_mask (sd)); | |
1362 | break; | |
1363 | } | |
1364 | break; | |
1365 | ||
1366 | case X (OP_LOWREG, SB): | |
1367 | *val = GET_L_REG (rn) & 0xff; | |
1368 | break; | |
1369 | case X (OP_LOWREG, SW): | |
1370 | *val = GET_L_REG (rn) & 0xffff; | |
1371 | break; | |
1372 | ||
1373 | case X (OP_REG, SB): /* Register direct, byte. */ | |
1374 | *val = GET_B_REG (rn); | |
1375 | break; | |
1376 | case X (OP_REG, SW): /* Register direct, word. */ | |
1377 | *val = GET_W_REG (rn); | |
1378 | break; | |
1379 | case X (OP_REG, SL): /* Register direct, long. */ | |
1380 | *val = GET_L_REG (rn); | |
1381 | break; | |
1382 | case X (OP_IMM, SB): /* Immediate, byte. */ | |
1383 | case X (OP_IMM, SW): /* Immediate, word. */ | |
1384 | case X (OP_IMM, SL): /* Immediate, long. */ | |
1385 | *val = abs; | |
1386 | break; | |
1387 | case X (OP_POSTINC, SB): /* Register indirect w/post-incr: byte. */ | |
1388 | t = GET_L_REG (rn); | |
1389 | t &= h8_get_mask (sd); | |
1390 | r = GET_MEMORY_B (t); | |
1391 | if (!twice) | |
1392 | t += 1; | |
1393 | t = t & h8_get_mask (sd); | |
1394 | SET_L_REG (rn, t); | |
1395 | *val = r; | |
1396 | break; | |
1397 | case X (OP_POSTINC, SW): /* Register indirect w/post-incr: word. */ | |
1398 | t = GET_L_REG (rn); | |
1399 | t &= h8_get_mask (sd); | |
1400 | r = GET_MEMORY_W (t); | |
1401 | if (!twice) | |
1402 | t += 2; | |
1403 | t = t & h8_get_mask (sd); | |
1404 | SET_L_REG (rn, t); | |
1405 | *val = r; | |
1406 | break; | |
1407 | case X (OP_POSTINC, SL): /* Register indirect w/post-incr: long. */ | |
1408 | t = GET_L_REG (rn); | |
1409 | t &= h8_get_mask (sd); | |
1410 | r = GET_MEMORY_L (t); | |
1411 | if (!twice) | |
1412 | t += 4; | |
1413 | t = t & h8_get_mask (sd); | |
1414 | SET_L_REG (rn, t); | |
1415 | *val = r; | |
1416 | break; | |
1417 | ||
1418 | case X (OP_POSTDEC, SB): /* Register indirect w/post-decr: byte. */ | |
1419 | t = GET_L_REG (rn); | |
1420 | t &= h8_get_mask (sd); | |
1421 | r = GET_MEMORY_B (t); | |
1422 | if (!twice) | |
1423 | t -= 1; | |
1424 | t = t & h8_get_mask (sd); | |
1425 | SET_L_REG (rn, t); | |
1426 | *val = r; | |
1427 | break; | |
1428 | case X (OP_POSTDEC, SW): /* Register indirect w/post-decr: word. */ | |
1429 | t = GET_L_REG (rn); | |
1430 | t &= h8_get_mask (sd); | |
1431 | r = GET_MEMORY_W (t); | |
1432 | if (!twice) | |
1433 | t -= 2; | |
1434 | t = t & h8_get_mask (sd); | |
1435 | SET_L_REG (rn, t); | |
1436 | *val = r; | |
1437 | break; | |
1438 | case X (OP_POSTDEC, SL): /* Register indirect w/post-decr: long. */ | |
1439 | t = GET_L_REG (rn); | |
1440 | t &= h8_get_mask (sd); | |
1441 | r = GET_MEMORY_L (t); | |
1442 | if (!twice) | |
1443 | t -= 4; | |
1444 | t = t & h8_get_mask (sd); | |
1445 | SET_L_REG (rn, t); | |
1446 | *val = r; | |
1447 | break; | |
1448 | ||
1449 | case X (OP_PREDEC, SB): /* Register indirect w/pre-decr: byte. */ | |
1450 | t = GET_L_REG (rn) - 1; | |
1451 | t &= h8_get_mask (sd); | |
1452 | SET_L_REG (rn, t); | |
1453 | *val = GET_MEMORY_B (t); | |
1454 | break; | |
1455 | ||
1456 | case X (OP_PREDEC, SW): /* Register indirect w/pre-decr: word. */ | |
1457 | t = GET_L_REG (rn) - 2; | |
1458 | t &= h8_get_mask (sd); | |
1459 | SET_L_REG (rn, t); | |
1460 | *val = GET_MEMORY_W (t); | |
1461 | break; | |
1462 | ||
1463 | case X (OP_PREDEC, SL): /* Register indirect w/pre-decr: long. */ | |
1464 | t = GET_L_REG (rn) - 4; | |
1465 | t &= h8_get_mask (sd); | |
1466 | SET_L_REG (rn, t); | |
1467 | *val = GET_MEMORY_L (t); | |
1468 | break; | |
1469 | ||
1470 | case X (OP_PREINC, SB): /* Register indirect w/pre-incr: byte. */ | |
1471 | t = GET_L_REG (rn) + 1; | |
1472 | t &= h8_get_mask (sd); | |
1473 | SET_L_REG (rn, t); | |
1474 | *val = GET_MEMORY_B (t); | |
1475 | break; | |
1476 | ||
1477 | case X (OP_PREINC, SW): /* Register indirect w/pre-incr: long. */ | |
1478 | t = GET_L_REG (rn) + 2; | |
1479 | t &= h8_get_mask (sd); | |
1480 | SET_L_REG (rn, t); | |
1481 | *val = GET_MEMORY_W (t); | |
1482 | break; | |
1483 | ||
1484 | case X (OP_PREINC, SL): /* Register indirect w/pre-incr: long. */ | |
1485 | t = GET_L_REG (rn) + 4; | |
1486 | t &= h8_get_mask (sd); | |
1487 | SET_L_REG (rn, t); | |
1488 | *val = GET_MEMORY_L (t); | |
1489 | break; | |
1490 | ||
1491 | case X (OP_DISP, SB): /* Register indirect w/displacement: byte. */ | |
1492 | t = GET_L_REG (rn) + abs; | |
1493 | t &= h8_get_mask (sd); | |
1494 | *val = GET_MEMORY_B (t); | |
1495 | break; | |
1496 | ||
1497 | case X (OP_DISP, SW): /* Register indirect w/displacement: word. */ | |
1498 | t = GET_L_REG (rn) + abs; | |
1499 | t &= h8_get_mask (sd); | |
1500 | *val = GET_MEMORY_W (t); | |
1501 | break; | |
1502 | ||
1503 | case X (OP_DISP, SL): /* Register indirect w/displacement: long. */ | |
1504 | t = GET_L_REG (rn) + abs; | |
1505 | t &= h8_get_mask (sd); | |
1506 | *val =GET_MEMORY_L (t); | |
1507 | break; | |
1508 | ||
1509 | case X (OP_MEM, SL): /* Absolute memory address, long. */ | |
1510 | t = GET_MEMORY_L (abs); | |
1511 | t &= h8_get_mask (sd); | |
1512 | *val = t; | |
1513 | break; | |
1514 | ||
1515 | case X (OP_MEM, SW): /* Absolute memory address, word. */ | |
1516 | t = GET_MEMORY_W (abs); | |
1517 | t &= h8_get_mask (sd); | |
1518 | *val = t; | |
1519 | break; | |
1520 | ||
1521 | case X (OP_PCREL, SB): /* PC relative (for jump, branch etc). */ | |
1522 | case X (OP_PCREL, SW): | |
1523 | case X (OP_PCREL, SL): | |
1524 | case X (OP_PCREL, SN): | |
1525 | *val = abs; | |
1526 | break; | |
1527 | ||
1528 | case X (OP_MEM, SB): /* Why isn't this implemented? */ | |
1529 | default: | |
1530 | sim_engine_set_run_state (sd, sim_stopped, SIGSEGV); | |
1531 | return -1; | |
1532 | } | |
1533 | return 0; /* Success. */ | |
1534 | } | |
1535 | ||
1536 | /* Normal fetch. */ | |
1537 | ||
1538 | static int | |
1539 | fetch (SIM_DESC sd, ea_type *arg, int *val) | |
1540 | { | |
1541 | return fetch_1 (sd, arg, val, 0); | |
1542 | } | |
1543 | ||
1544 | /* Fetch which will be followed by a store to the same location. | |
1545 | The difference being that we don't want to do a post-increment | |
1546 | or post-decrement at this time: we'll do it when we store. */ | |
1547 | ||
1548 | static int | |
1549 | fetch2 (SIM_DESC sd, ea_type *arg, int *val) | |
1550 | { | |
1551 | return fetch_1 (sd, arg, val, 1); | |
1552 | } | |
1553 | ||
1554 | /* Simulate a memory store. | |
1555 | Return 0 for success, -1 for failure. | |
1556 | */ | |
1557 | ||
1558 | static int | |
1559 | store_1 (SIM_DESC sd, ea_type *arg, int n, int twice) | |
1560 | { | |
1561 | int rn = arg->reg; | |
1562 | int abs = arg->literal; | |
1563 | int t; | |
1564 | ||
1565 | switch (arg->type) | |
1566 | { | |
1567 | /* Indexed register plus displacement mode: | |
1568 | ||
1569 | This new family of addressing modes are similar to OP_DISP | |
1570 | (register plus displacement), with two differences: | |
1571 | 1) INDEXB uses only the least significant byte of the register, | |
1572 | INDEXW uses only the least significant word, and | |
1573 | INDEXL uses the entire register (just like OP_DISP). | |
1574 | and | |
1575 | 2) The displacement value in abs is multiplied by two | |
1576 | for SW-sized operations, and by four for SL-size. | |
1577 | ||
1578 | This gives nine possible variations. | |
1579 | */ | |
1580 | ||
1581 | case X (OP_INDEXB, SB): | |
1582 | case X (OP_INDEXB, SW): | |
1583 | case X (OP_INDEXB, SL): | |
1584 | case X (OP_INDEXW, SB): | |
1585 | case X (OP_INDEXW, SW): | |
1586 | case X (OP_INDEXW, SL): | |
1587 | case X (OP_INDEXL, SB): | |
1588 | case X (OP_INDEXL, SW): | |
1589 | case X (OP_INDEXL, SL): | |
1590 | t = GET_L_REG (rn); | |
1591 | switch (OP_KIND (arg->type)) { | |
1592 | case OP_INDEXB: t &= 0xff; break; | |
1593 | case OP_INDEXW: t &= 0xffff; break; | |
1594 | case OP_INDEXL: | |
1595 | default: break; | |
1596 | } | |
1597 | switch (OP_SIZE (arg->type)) { | |
1598 | case SB: | |
1599 | SET_MEMORY_B ((t * 1 + abs) & h8_get_mask (sd), n); | |
1600 | break; | |
1601 | case SW: | |
1602 | SET_MEMORY_W ((t * 2 + abs) & h8_get_mask (sd), n); | |
1603 | break; | |
1604 | case SL: | |
1605 | SET_MEMORY_L ((t * 4 + abs) & h8_get_mask (sd), n); | |
1606 | break; | |
1607 | } | |
1608 | break; | |
1609 | ||
1610 | case X (OP_REG, SB): /* Register direct, byte. */ | |
1611 | SET_B_REG (rn, n); | |
1612 | break; | |
1613 | case X (OP_REG, SW): /* Register direct, word. */ | |
1614 | SET_W_REG (rn, n); | |
1615 | break; | |
1616 | case X (OP_REG, SL): /* Register direct, long. */ | |
1617 | SET_L_REG (rn, n); | |
1618 | break; | |
1619 | ||
1620 | case X (OP_PREDEC, SB): /* Register indirect w/pre-decr, byte. */ | |
1621 | t = GET_L_REG (rn); | |
1622 | if (!twice) | |
1623 | t -= 1; | |
1624 | t &= h8_get_mask (sd); | |
1625 | SET_L_REG (rn, t); | |
1626 | SET_MEMORY_B (t, n); | |
1627 | ||
1628 | break; | |
1629 | case X (OP_PREDEC, SW): /* Register indirect w/pre-decr, word. */ | |
1630 | t = GET_L_REG (rn); | |
1631 | if (!twice) | |
1632 | t -= 2; | |
1633 | t &= h8_get_mask (sd); | |
1634 | SET_L_REG (rn, t); | |
1635 | SET_MEMORY_W (t, n); | |
1636 | break; | |
1637 | ||
1638 | case X (OP_PREDEC, SL): /* Register indirect w/pre-decr, long. */ | |
1639 | t = GET_L_REG (rn); | |
1640 | if (!twice) | |
1641 | t -= 4; | |
1642 | t &= h8_get_mask (sd); | |
1643 | SET_L_REG (rn, t); | |
1644 | SET_MEMORY_L (t, n); | |
1645 | break; | |
1646 | ||
1647 | case X (OP_PREINC, SB): /* Register indirect w/pre-incr, byte. */ | |
1648 | t = GET_L_REG (rn); | |
1649 | if (!twice) | |
1650 | t += 1; | |
1651 | t &= h8_get_mask (sd); | |
1652 | SET_L_REG (rn, t); | |
1653 | SET_MEMORY_B (t, n); | |
1654 | ||
1655 | break; | |
1656 | case X (OP_PREINC, SW): /* Register indirect w/pre-incr, word. */ | |
1657 | t = GET_L_REG (rn); | |
1658 | if (!twice) | |
1659 | t += 2; | |
1660 | t &= h8_get_mask (sd); | |
1661 | SET_L_REG (rn, t); | |
1662 | SET_MEMORY_W (t, n); | |
1663 | break; | |
1664 | ||
1665 | case X (OP_PREINC, SL): /* Register indirect w/pre-incr, long. */ | |
1666 | t = GET_L_REG (rn); | |
1667 | if (!twice) | |
1668 | t += 4; | |
1669 | t &= h8_get_mask (sd); | |
1670 | SET_L_REG (rn, t); | |
1671 | SET_MEMORY_L (t, n); | |
1672 | break; | |
1673 | ||
1674 | case X (OP_POSTDEC, SB): /* Register indirect w/post-decr, byte. */ | |
1675 | t = GET_L_REG (rn) & h8_get_mask (sd); | |
1676 | SET_MEMORY_B (t, n); | |
1677 | SET_L_REG (rn, t - 1); | |
1678 | break; | |
1679 | ||
1680 | case X (OP_POSTDEC, SW): /* Register indirect w/post-decr, word. */ | |
1681 | t = GET_L_REG (rn) & h8_get_mask (sd); | |
1682 | SET_MEMORY_W (t, n); | |
1683 | SET_L_REG (rn, t - 2); | |
1684 | break; | |
1685 | ||
1686 | case X (OP_POSTDEC, SL): /* Register indirect w/post-decr, long. */ | |
1687 | t = GET_L_REG (rn) & h8_get_mask (sd); | |
1688 | SET_MEMORY_L (t, n); | |
1689 | SET_L_REG (rn, t - 4); | |
1690 | break; | |
1691 | ||
1692 | case X (OP_POSTINC, SB): /* Register indirect w/post-incr, byte. */ | |
1693 | t = GET_L_REG (rn) & h8_get_mask (sd); | |
1694 | SET_MEMORY_B (t, n); | |
1695 | SET_L_REG (rn, t + 1); | |
1696 | break; | |
1697 | ||
1698 | case X (OP_POSTINC, SW): /* Register indirect w/post-incr, word. */ | |
1699 | t = GET_L_REG (rn) & h8_get_mask (sd); | |
1700 | SET_MEMORY_W (t, n); | |
1701 | SET_L_REG (rn, t + 2); | |
1702 | break; | |
1703 | ||
1704 | case X (OP_POSTINC, SL): /* Register indirect w/post-incr, long. */ | |
1705 | t = GET_L_REG (rn) & h8_get_mask (sd); | |
1706 | SET_MEMORY_L (t, n); | |
1707 | SET_L_REG (rn, t + 4); | |
1708 | break; | |
1709 | ||
1710 | case X (OP_DISP, SB): /* Register indirect w/displacement, byte. */ | |
1711 | t = GET_L_REG (rn) + abs; | |
1712 | t &= h8_get_mask (sd); | |
1713 | SET_MEMORY_B (t, n); | |
1714 | break; | |
1715 | ||
1716 | case X (OP_DISP, SW): /* Register indirect w/displacement, word. */ | |
1717 | t = GET_L_REG (rn) + abs; | |
1718 | t &= h8_get_mask (sd); | |
1719 | SET_MEMORY_W (t, n); | |
1720 | break; | |
1721 | ||
1722 | case X (OP_DISP, SL): /* Register indirect w/displacement, long. */ | |
1723 | t = GET_L_REG (rn) + abs; | |
1724 | t &= h8_get_mask (sd); | |
1725 | SET_MEMORY_L (t, n); | |
1726 | break; | |
1727 | ||
1728 | ||
1729 | case X (OP_MEM, SB): /* Why isn't this implemented? */ | |
1730 | case X (OP_MEM, SW): /* Why isn't this implemented? */ | |
1731 | case X (OP_MEM, SL): /* Why isn't this implemented? */ | |
1732 | default: | |
1733 | sim_engine_set_run_state (sd, sim_stopped, SIGSEGV); | |
1734 | return -1; | |
1735 | } | |
1736 | return 0; | |
1737 | } | |
1738 | ||
1739 | /* Normal store. */ | |
1740 | ||
1741 | static int | |
1742 | store (SIM_DESC sd, ea_type *arg, int n) | |
1743 | { | |
1744 | return store_1 (sd, arg, n, 0); | |
1745 | } | |
1746 | ||
1747 | /* Store which follows a fetch from the same location. | |
1748 | The difference being that we don't want to do a pre-increment | |
1749 | or pre-decrement at this time: it was already done when we fetched. */ | |
1750 | ||
1751 | static int | |
1752 | store2 (SIM_DESC sd, ea_type *arg, int n) | |
1753 | { | |
1754 | return store_1 (sd, arg, n, 1); | |
1755 | } | |
1756 | ||
1757 | static union | |
1758 | { | |
1759 | short int i; | |
1760 | struct | |
1761 | { | |
1762 | char low; | |
1763 | char high; | |
1764 | } | |
1765 | u; | |
1766 | } littleendian; | |
1767 | ||
1768 | /* Flag to be set whenever a new SIM_DESC object is created. */ | |
1769 | static int init_pointers_needed = 1; | |
1770 | ||
1771 | static void | |
1772 | init_pointers (SIM_DESC sd) | |
1773 | { | |
1774 | if (init_pointers_needed) | |
1775 | { | |
1776 | int i; | |
1777 | ||
1778 | littleendian.i = 1; | |
1779 | ||
59768597 | 1780 | if (h8300smode && !h8300_normal_mode) |
dc5c3759 | 1781 | memory_size = H8300S_MSIZE; |
59768597 | 1782 | else if (h8300hmode && !h8300_normal_mode) |
dc5c3759 MS |
1783 | memory_size = H8300H_MSIZE; |
1784 | else | |
1785 | memory_size = H8300_MSIZE; | |
1786 | /* `msize' must be a power of two. */ | |
1787 | if ((memory_size & (memory_size - 1)) != 0) | |
1788 | { | |
1789 | (*sim_callback->printf_filtered) | |
1790 | (sim_callback, | |
1791 | "init_pointers: bad memory size %d, defaulting to %d.\n", | |
1792 | memory_size, memory_size = H8300S_MSIZE); | |
1793 | } | |
1794 | ||
1795 | if (h8_get_memory_buf (sd)) | |
1796 | free (h8_get_memory_buf (sd)); | |
1797 | if (h8_get_cache_idx_buf (sd)) | |
1798 | free (h8_get_cache_idx_buf (sd)); | |
1799 | if (h8_get_eightbit_buf (sd)) | |
1800 | free (h8_get_eightbit_buf (sd)); | |
1801 | ||
1802 | h8_set_memory_buf (sd, (unsigned char *) | |
1803 | calloc (sizeof (char), memory_size)); | |
1804 | h8_set_cache_idx_buf (sd, (unsigned short *) | |
1805 | calloc (sizeof (short), memory_size)); | |
1806 | sd->memory_size = memory_size; | |
1807 | h8_set_eightbit_buf (sd, (unsigned char *) calloc (sizeof (char), 256)); | |
1808 | ||
1809 | h8_set_mask (sd, memory_size - 1); | |
1810 | ||
1811 | memset (h8_get_reg_buf (sd), 0, sizeof (((STATE_CPU (sd, 0))->regs))); | |
1812 | ||
1813 | for (i = 0; i < 8; i++) | |
1814 | { | |
1815 | /* FIXME: rewrite using local buffer. */ | |
1816 | unsigned char *p = (unsigned char *) (h8_get_reg_buf (sd) + i); | |
1817 | unsigned char *e = (unsigned char *) (h8_get_reg_buf (sd) + i + 1); | |
1818 | unsigned short *q = (unsigned short *) (h8_get_reg_buf (sd) + i); | |
1819 | unsigned short *u = (unsigned short *) (h8_get_reg_buf (sd) + i + 1); | |
1820 | h8_set_reg (sd, i, 0x00112233); | |
1821 | ||
1822 | while (p < e) | |
1823 | { | |
1824 | if (*p == 0x22) | |
1825 | breg[i] = p; | |
1826 | if (*p == 0x33) | |
1827 | breg[i + 8] = p; | |
1828 | if (*p == 0x11) | |
1829 | breg[i + 16] = p; | |
1830 | if (*p == 0x00) | |
1831 | breg[i + 24] = p; | |
1832 | p++; | |
1833 | } | |
1834 | ||
1835 | wreg[i] = wreg[i + 8] = 0; | |
1836 | while (q < u) | |
1837 | { | |
1838 | if (*q == 0x2233) | |
1839 | { | |
1840 | wreg[i] = q; | |
1841 | } | |
1842 | if (*q == 0x0011) | |
1843 | { | |
1844 | wreg[i + 8] = q; | |
1845 | } | |
1846 | q++; | |
1847 | } | |
1848 | ||
1849 | if (wreg[i] == 0 || wreg[i + 8] == 0) | |
1850 | (*sim_callback->printf_filtered) (sim_callback, | |
1851 | "init_pointers: internal error.\n"); | |
1852 | ||
1853 | h8_set_reg (sd, i, 0); | |
1854 | lreg[i] = h8_get_reg_buf (sd) + i; | |
1855 | } | |
1856 | ||
1857 | /* Note: sim uses pseudo-register ZERO as a zero register. */ | |
1858 | lreg[ZERO_REGNUM] = h8_get_reg_buf (sd) + ZERO_REGNUM; | |
1859 | init_pointers_needed = 0; | |
1860 | ||
1861 | /* Initialize the seg registers. */ | |
1862 | if (!sd->sim_cache) | |
1863 | set_simcache_size (sd, CSIZE); | |
1864 | } | |
1865 | } | |
1866 | ||
1867 | /* Grotty global variable for use by control_c signal handler. */ | |
1868 | static SIM_DESC control_c_sim_desc; | |
1869 | ||
1870 | static void | |
1871 | control_c (int sig) | |
1872 | { | |
1873 | sim_engine_set_run_state (control_c_sim_desc, sim_stopped, SIGINT); | |
1874 | } | |
1875 | ||
1876 | int | |
1877 | sim_stop (SIM_DESC sd) | |
1878 | { | |
1879 | /* FIXME: use a real signal value. */ | |
1880 | sim_engine_set_run_state (sd, sim_stopped, SIGINT); | |
1881 | return 1; | |
1882 | } | |
1883 | ||
1884 | #define OBITOP(name, f, s, op) \ | |
1885 | case O (name, SB): \ | |
1886 | { \ | |
1887 | int m, tmp; \ | |
1888 | \ | |
1889 | if (f) \ | |
1890 | if (fetch (sd, &code->dst, &ea)) \ | |
1891 | goto end; \ | |
1892 | if (fetch (sd, &code->src, &tmp)) \ | |
1893 | goto end; \ | |
1894 | m = 1 << tmp; \ | |
1895 | op; \ | |
1896 | if (s) \ | |
1897 | if (store (sd, &code->dst,ea)) \ | |
1898 | goto end; \ | |
1899 | goto next; \ | |
1900 | } | |
1901 | ||
1902 | void | |
1903 | sim_resume (SIM_DESC sd, int step, int siggnal) | |
1904 | { | |
1905 | static int init1; | |
1906 | int cycles = 0; | |
1907 | int insts = 0; | |
1908 | int tick_start = get_now (); | |
1909 | void (*prev) (); | |
1910 | int poll_count = 0; | |
1911 | int res; | |
1912 | int tmp; | |
1913 | int rd; | |
1914 | int ea; | |
1915 | int bit; | |
1916 | int pc; | |
1917 | int c, nz, v, n, u, h, ui, intMaskBit; | |
1918 | int trace, intMask; | |
1919 | int oldmask; | |
1920 | enum sim_stop reason; | |
1921 | int sigrc; | |
1922 | ||
1923 | init_pointers (sd); | |
1924 | ||
1925 | control_c_sim_desc = sd; | |
1926 | prev = signal (SIGINT, control_c); | |
1927 | ||
1928 | if (step) | |
1929 | { | |
1930 | sim_engine_set_run_state (sd, sim_stopped, SIGTRAP); | |
1931 | } | |
1932 | else | |
1933 | { | |
1934 | sim_engine_set_run_state (sd, sim_running, 0); | |
1935 | } | |
1936 | ||
1937 | pc = h8_get_pc (sd); | |
1938 | ||
1939 | /* The PC should never be odd. */ | |
1940 | if (pc & 0x1) | |
1941 | { | |
1942 | sim_engine_set_run_state (sd, sim_stopped, SIGBUS); | |
1943 | return; | |
1944 | } | |
1945 | ||
1946 | /* Get Status Register (flags). */ | |
9f70f8ec | 1947 | GETSR (sd); |
dc5c3759 MS |
1948 | |
1949 | if (h8300smode) /* Get exr. */ | |
1950 | { | |
1951 | trace = (h8_get_exr (sd) >> 7) & 1; | |
1952 | intMask = h8_get_exr (sd) & 7; | |
1953 | } | |
1954 | ||
1955 | oldmask = h8_get_mask (sd); | |
59768597 | 1956 | if (!h8300hmode || h8300_normal_mode) |
dc5c3759 MS |
1957 | h8_set_mask (sd, 0xffff); |
1958 | do | |
1959 | { | |
1960 | unsigned short cidx; | |
1961 | decoded_inst *code; | |
1962 | ||
1963 | top: | |
1964 | cidx = h8_get_cache_idx (sd, pc); | |
1965 | if (cidx == (unsigned short) -1 || | |
1966 | cidx >= sd->sim_cache_size) | |
1967 | goto illegal; | |
1968 | ||
1969 | code = sd->sim_cache + cidx; | |
1970 | ||
1971 | #if ADEBUG | |
1972 | if (debug) | |
1973 | { | |
1974 | printf ("%x %d %s\n", pc, code->opcode, | |
1975 | code->op ? code->op->name : "**"); | |
1976 | } | |
1977 | h8_increment_stats (sd, code->opcode); | |
1978 | #endif | |
1979 | ||
1980 | if (code->opcode) | |
1981 | { | |
1982 | cycles += code->cycles; | |
1983 | insts++; | |
1984 | } | |
1985 | ||
1986 | switch (code->opcode) | |
1987 | { | |
1988 | case 0: | |
1989 | /* | |
1990 | * This opcode is a fake for when we get to an | |
1991 | * instruction which hasnt been compiled | |
1992 | */ | |
1993 | compile (sd, pc); | |
1994 | goto top; | |
1995 | break; | |
1996 | ||
1997 | case O (O_MOVAB, SL): | |
1998 | case O (O_MOVAW, SL): | |
1999 | case O (O_MOVAL, SL): | |
2000 | /* 1) Evaluate 2nd argument (dst). | |
2001 | 2) Mask / zero extend according to whether 1st argument (src) | |
2002 | is INDEXB, INDEXW, or INDEXL. | |
2003 | 3) Left-shift the result by 0, 1 or 2, according to size of mova | |
2004 | (mova/b, mova/w, mova/l). | |
2005 | 4) Add literal value of 1st argument (src). | |
2006 | 5) Store result in 3rd argument (op3). | |
f408565c MS |
2007 | */ |
2008 | ||
2009 | /* Alas, since this is the only instruction with 3 arguments, | |
2010 | decode doesn't handle them very well. Some fix-up is required. | |
2011 | ||
2012 | a) The size of dst is determined by whether src is | |
2013 | INDEXB or INDEXW. */ | |
dc5c3759 | 2014 | |
f408565c MS |
2015 | if (OP_KIND (code->src.type) == OP_INDEXB) |
2016 | code->dst.type = X (OP_KIND (code->dst.type), SB); | |
2017 | else if (OP_KIND (code->src.type) == OP_INDEXW) | |
2018 | code->dst.type = X (OP_KIND (code->dst.type), SW); | |
2019 | ||
2020 | /* b) If op3 == null, then this is the short form of the insn. | |
2021 | Dst is the dispreg of src, and op3 is the 32-bit form | |
2022 | of the same register. | |
dc5c3759 | 2023 | */ |
f408565c MS |
2024 | |
2025 | if (code->op3.type == 0) | |
2026 | { | |
2027 | /* Short form: src == INDEXB/INDEXW, dst == op3 == 0. | |
2028 | We get to compose dst and op3 as follows: | |
2029 | ||
2030 | op3 is a 32-bit register, ID == src.reg. | |
2031 | dst is the same register, but 8 or 16 bits | |
2032 | depending on whether src is INDEXB or INDEXW. | |
2033 | */ | |
2034 | ||
2035 | code->op3.type = X (OP_REG, SL); | |
2036 | code->op3.reg = code->src.reg; | |
2037 | code->op3.literal = 0; | |
2038 | ||
2039 | if (OP_KIND (code->src.type) == OP_INDEXB) | |
2040 | code->dst.type = X (OP_REG, SB); | |
2041 | else | |
2042 | code->dst.type = X (OP_REG, SW); | |
2043 | } | |
2044 | ||
dc5c3759 MS |
2045 | if (fetch (sd, &code->dst, &ea)) |
2046 | goto end; | |
2047 | ||
2048 | switch (OP_KIND (code->src.type)) { | |
2049 | case OP_INDEXB: ea = ea & 0xff; break; | |
2050 | case OP_INDEXW: ea = ea & 0xffff; break; | |
2051 | case OP_INDEXL: break; | |
2052 | default: goto illegal; | |
2053 | } | |
2054 | ||
2055 | switch (code->opcode) { | |
2056 | case O (O_MOVAB, SL): break; | |
2057 | case O (O_MOVAW, SL): ea = ea << 1; break; | |
2058 | case O (O_MOVAL, SL): ea = ea << 2; break; | |
2059 | default: goto illegal; | |
2060 | } | |
2061 | ||
2062 | ea = ea + code->src.literal; | |
2063 | ||
2064 | if (store (sd, &code->op3, ea)) | |
2065 | goto end; | |
2066 | ||
2067 | goto next; | |
2068 | ||
2069 | case O (O_SUBX, SB): /* subx, extended sub */ | |
2070 | if (fetch2 (sd, &code->dst, &rd)) | |
2071 | goto end; | |
2072 | if (fetch (sd, &code->src, &ea)) | |
2073 | goto end; | |
2074 | ea = -(ea + C); | |
2075 | res = rd + ea; | |
2076 | goto alu8; | |
2077 | ||
2078 | case O (O_SUBX, SW): /* subx, extended sub */ | |
2079 | if (fetch2 (sd, &code->dst, &rd)) | |
2080 | goto end; | |
2081 | if (fetch (sd, &code->src, &ea)) | |
2082 | goto end; | |
2083 | ea = -(ea + C); | |
2084 | res = rd + ea; | |
2085 | goto alu16; | |
2086 | ||
2087 | case O (O_SUBX, SL): /* subx, extended sub */ | |
2088 | if (fetch2 (sd, &code->dst, &rd)) | |
2089 | goto end; | |
2090 | if (fetch (sd, &code->src, &ea)) | |
2091 | goto end; | |
2092 | ea = -(ea + C); | |
2093 | res = rd + ea; | |
2094 | goto alu32; | |
2095 | ||
2096 | case O (O_ADDX, SB): /* addx, extended add */ | |
2097 | if (fetch2 (sd, &code->dst, &rd)) | |
2098 | goto end; | |
2099 | if (fetch (sd, &code->src, &ea)) | |
2100 | goto end; | |
2101 | ea = ea + C; | |
2102 | res = rd + ea; | |
2103 | goto alu8; | |
2104 | ||
2105 | case O (O_ADDX, SW): /* addx, extended add */ | |
2106 | if (fetch2 (sd, &code->dst, &rd)) | |
2107 | goto end; | |
2108 | if (fetch (sd, &code->src, &ea)) | |
2109 | goto end; | |
2110 | ea = ea + C; | |
2111 | res = rd + ea; | |
2112 | goto alu16; | |
2113 | ||
2114 | case O (O_ADDX, SL): /* addx, extended add */ | |
2115 | if (fetch2 (sd, &code->dst, &rd)) | |
2116 | goto end; | |
2117 | if (fetch (sd, &code->src, &ea)) | |
2118 | goto end; | |
2119 | ea = ea + C; | |
2120 | res = rd + ea; | |
2121 | goto alu32; | |
2122 | ||
2123 | case O (O_SUB, SB): /* sub.b */ | |
2124 | /* Fetch rd and ea. */ | |
2125 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2126 | goto end; | |
2127 | ea = -ea; | |
2128 | res = rd + ea; | |
2129 | goto alu8; | |
2130 | ||
2131 | case O (O_SUB, SW): /* sub.w */ | |
2132 | /* Fetch rd and ea. */ | |
2133 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2134 | goto end; | |
2135 | ea = -ea; | |
2136 | res = rd + ea; | |
2137 | goto alu16; | |
2138 | ||
2139 | case O (O_SUB, SL): /* sub.l */ | |
2140 | /* Fetch rd and ea. */ | |
2141 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2142 | goto end; | |
2143 | ea = -ea; | |
2144 | res = rd + ea; | |
2145 | goto alu32; | |
2146 | ||
2147 | case O (O_NEG, SB): /* neg.b */ | |
2148 | /* Fetch ea. */ | |
2149 | if (fetch2 (sd, &code->src, &ea)) | |
2150 | goto end; | |
2151 | ea = -ea; | |
2152 | rd = 0; | |
2153 | res = rd + ea; | |
2154 | goto alu8; | |
2155 | ||
2156 | case O (O_NEG, SW): /* neg.w */ | |
2157 | /* Fetch ea. */ | |
2158 | if (fetch2 (sd, &code->src, &ea)) | |
2159 | goto end; | |
2160 | ea = -ea; | |
2161 | rd = 0; | |
2162 | res = rd + ea; | |
2163 | goto alu16; | |
2164 | ||
2165 | case O (O_NEG, SL): /* neg.l */ | |
2166 | /* Fetch ea. */ | |
2167 | if (fetch2 (sd, &code->src, &ea)) | |
2168 | goto end; | |
2169 | ea = -ea; | |
2170 | rd = 0; | |
2171 | res = rd + ea; | |
2172 | goto alu32; | |
2173 | ||
2174 | case O (O_ADD, SB): /* add.b */ | |
2175 | if (fetch2 (sd, &code->dst, &rd)) | |
2176 | goto end; | |
2177 | if (fetch (sd, &code->src, &ea)) | |
2178 | goto end; | |
2179 | res = rd + ea; | |
2180 | goto alu8; | |
2181 | ||
2182 | case O (O_ADD, SW): /* add.w */ | |
2183 | if (fetch2 (sd, &code->dst, &rd)) | |
2184 | goto end; | |
2185 | if (fetch (sd, &code->src, &ea)) | |
2186 | goto end; | |
2187 | res = rd + ea; | |
2188 | goto alu16; | |
2189 | ||
2190 | case O (O_ADD, SL): /* add.l */ | |
2191 | if (fetch2 (sd, &code->dst, &rd)) | |
2192 | goto end; | |
2193 | if (fetch (sd, &code->src, &ea)) | |
2194 | goto end; | |
2195 | res = rd + ea; | |
2196 | goto alu32; | |
2197 | ||
2198 | case O (O_AND, SB): /* and.b */ | |
2199 | /* Fetch rd and ea. */ | |
2200 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2201 | goto end; | |
2202 | res = rd & ea; | |
2203 | goto log8; | |
2204 | ||
2205 | case O (O_AND, SW): /* and.w */ | |
2206 | /* Fetch rd and ea. */ | |
2207 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2208 | goto end; | |
2209 | res = rd & ea; | |
2210 | goto log16; | |
2211 | ||
2212 | case O (O_AND, SL): /* and.l */ | |
2213 | /* Fetch rd and ea. */ | |
2214 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2215 | goto end; | |
2216 | res = rd & ea; | |
2217 | goto log32; | |
2218 | ||
2219 | case O (O_OR, SB): /* or.b */ | |
2220 | /* Fetch rd and ea. */ | |
2221 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2222 | goto end; | |
2223 | res = rd | ea; | |
2224 | goto log8; | |
2225 | ||
2226 | case O (O_OR, SW): /* or.w */ | |
2227 | /* Fetch rd and ea. */ | |
2228 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2229 | goto end; | |
2230 | res = rd | ea; | |
2231 | goto log16; | |
2232 | ||
2233 | case O (O_OR, SL): /* or.l */ | |
2234 | /* Fetch rd and ea. */ | |
2235 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2236 | goto end; | |
2237 | res = rd | ea; | |
2238 | goto log32; | |
2239 | ||
2240 | case O (O_XOR, SB): /* xor.b */ | |
2241 | /* Fetch rd and ea. */ | |
2242 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2243 | goto end; | |
2244 | res = rd ^ ea; | |
2245 | goto log8; | |
2246 | ||
2247 | case O (O_XOR, SW): /* xor.w */ | |
2248 | /* Fetch rd and ea. */ | |
2249 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2250 | goto end; | |
2251 | res = rd ^ ea; | |
2252 | goto log16; | |
2253 | ||
2254 | case O (O_XOR, SL): /* xor.l */ | |
2255 | /* Fetch rd and ea. */ | |
2256 | if (fetch (sd, &code->src, &ea) || fetch2 (sd, &code->dst, &rd)) | |
2257 | goto end; | |
2258 | res = rd ^ ea; | |
2259 | goto log32; | |
2260 | ||
2261 | case O (O_MOV, SB): | |
2262 | if (fetch (sd, &code->src, &res)) | |
2263 | goto end; | |
2264 | if (store (sd, &code->dst, res)) | |
2265 | goto end; | |
2266 | goto just_flags_log8; | |
2267 | case O (O_MOV, SW): | |
2268 | if (fetch (sd, &code->src, &res)) | |
2269 | goto end; | |
2270 | if (store (sd, &code->dst, res)) | |
2271 | goto end; | |
2272 | goto just_flags_log16; | |
2273 | case O (O_MOV, SL): | |
2274 | if (fetch (sd, &code->src, &res)) | |
2275 | goto end; | |
2276 | if (store (sd, &code->dst, res)) | |
2277 | goto end; | |
2278 | goto just_flags_log32; | |
2279 | ||
9f70f8ec | 2280 | case O (O_MOVMD, SB): /* movmd.b */ |
dc5c3759 MS |
2281 | ea = GET_W_REG (4); |
2282 | if (ea == 0) | |
2283 | ea = 0x10000; | |
2284 | ||
2285 | while (ea--) | |
2286 | { | |
2287 | rd = GET_MEMORY_B (GET_L_REG (5)); | |
2288 | SET_MEMORY_B (GET_L_REG (6), rd); | |
2289 | SET_L_REG (5, GET_L_REG (5) + 1); | |
2290 | SET_L_REG (6, GET_L_REG (6) + 1); | |
2291 | SET_W_REG (4, ea); | |
2292 | } | |
2293 | goto next; | |
2294 | ||
9f70f8ec | 2295 | case O (O_MOVMD, SW): /* movmd.w */ |
dc5c3759 MS |
2296 | ea = GET_W_REG (4); |
2297 | if (ea == 0) | |
2298 | ea = 0x10000; | |
2299 | ||
2300 | while (ea--) | |
2301 | { | |
2302 | rd = GET_MEMORY_W (GET_L_REG (5)); | |
2303 | SET_MEMORY_W (GET_L_REG (6), rd); | |
2304 | SET_L_REG (5, GET_L_REG (5) + 2); | |
2305 | SET_L_REG (6, GET_L_REG (6) + 2); | |
2306 | SET_W_REG (4, ea); | |
2307 | } | |
2308 | goto next; | |
2309 | ||
9f70f8ec | 2310 | case O (O_MOVMD, SL): /* movmd.l */ |
dc5c3759 MS |
2311 | ea = GET_W_REG (4); |
2312 | if (ea == 0) | |
2313 | ea = 0x10000; | |
2314 | ||
2315 | while (ea--) | |
2316 | { | |
2317 | rd = GET_MEMORY_L (GET_L_REG (5)); | |
2318 | SET_MEMORY_L (GET_L_REG (6), rd); | |
2319 | SET_L_REG (5, GET_L_REG (5) + 4); | |
2320 | SET_L_REG (6, GET_L_REG (6) + 4); | |
2321 | SET_W_REG (4, ea); | |
2322 | } | |
2323 | goto next; | |
2324 | ||
2325 | case O (O_MOVSD, SB): /* movsd.b */ | |
2326 | /* This instruction implements strncpy, with a conditional branch. | |
2327 | r4 contains n, r5 contains src, and r6 contains dst. | |
2328 | The 16-bit displacement operand is added to the pc | |
2329 | if and only if the end of string is reached before | |
2330 | n bytes are transferred. */ | |
2331 | ||
2332 | ea = GET_L_REG (4) & 0xffff; | |
2333 | if (ea == 0) | |
2334 | ea = 0x10000; | |
2335 | ||
2336 | while (ea--) | |
2337 | { | |
2338 | rd = GET_MEMORY_B (GET_L_REG (5)); | |
2339 | SET_MEMORY_B (GET_L_REG (6), rd); | |
2340 | SET_L_REG (5, GET_L_REG (5) + 1); | |
2341 | SET_L_REG (6, GET_L_REG (6) + 1); | |
2342 | SET_W_REG (4, ea); | |
2343 | if (rd == 0) | |
2344 | goto condtrue; | |
2345 | } | |
2346 | goto next; | |
2347 | ||
2348 | case O (O_EEPMOV, SB): /* eepmov.b */ | |
2349 | case O (O_EEPMOV, SW): /* eepmov.w */ | |
2350 | if (h8300hmode || h8300smode) | |
2351 | { | |
2352 | register unsigned char *_src, *_dst; | |
2353 | unsigned int count = ((code->opcode == O (O_EEPMOV, SW)) | |
2354 | ? h8_get_reg (sd, R4_REGNUM) & 0xffff | |
2355 | : h8_get_reg (sd, R4_REGNUM) & 0xff); | |
2356 | ||
2357 | _src = (h8_get_reg (sd, R5_REGNUM) < memory_size | |
2358 | ? h8_get_memory_buf (sd) + h8_get_reg (sd, R5_REGNUM) | |
2359 | : h8_get_eightbit_buf (sd) + | |
2360 | (h8_get_reg (sd, R5_REGNUM) & 0xff)); | |
2361 | if ((_src + count) >= (h8_get_memory_buf (sd) + memory_size)) | |
2362 | { | |
2363 | if ((_src + count) >= (h8_get_eightbit_buf (sd) + 0x100)) | |
2364 | goto illegal; | |
2365 | } | |
2366 | _dst = (h8_get_reg (sd, R6_REGNUM) < memory_size | |
2367 | ? h8_get_memory_buf (sd) + h8_get_reg (sd, R6_REGNUM) | |
2368 | : h8_get_eightbit_buf (sd) + | |
2369 | (h8_get_reg (sd, R6_REGNUM) & 0xff)); | |
2370 | ||
2371 | if ((_dst + count) >= (h8_get_memory_buf (sd) + memory_size)) | |
2372 | { | |
2373 | if ((_dst + count) >= (h8_get_eightbit_buf (sd) + 0x100)) | |
2374 | goto illegal; | |
2375 | } | |
2376 | memcpy (_dst, _src, count); | |
2377 | ||
2378 | h8_set_reg (sd, R5_REGNUM, h8_get_reg (sd, R5_REGNUM) + count); | |
2379 | h8_set_reg (sd, R6_REGNUM, h8_get_reg (sd, R6_REGNUM) + count); | |
2380 | h8_set_reg (sd, R4_REGNUM, h8_get_reg (sd, R4_REGNUM) & | |
2381 | ((code->opcode == O (O_EEPMOV, SW)) | |
2382 | ? (~0xffff) : (~0xff))); | |
2383 | cycles += 2 * count; | |
2384 | goto next; | |
2385 | } | |
2386 | goto illegal; | |
2387 | ||
2388 | case O (O_ADDS, SL): /* adds (.l) */ | |
2389 | /* FIXME fetch. | |
2390 | * This insn only uses register operands, but still | |
2391 | * it would be cleaner to use fetch and store... */ | |
2392 | SET_L_REG (code->dst.reg, | |
2393 | GET_L_REG (code->dst.reg) | |
2394 | + code->src.literal); | |
2395 | ||
2396 | goto next; | |
2397 | ||
2398 | case O (O_SUBS, SL): /* subs (.l) */ | |
2399 | /* FIXME fetch. | |
2400 | * This insn only uses register operands, but still | |
2401 | * it would be cleaner to use fetch and store... */ | |
2402 | SET_L_REG (code->dst.reg, | |
2403 | GET_L_REG (code->dst.reg) | |
2404 | - code->src.literal); | |
2405 | goto next; | |
2406 | ||
2407 | case O (O_CMP, SB): /* cmp.b */ | |
2408 | if (fetch (sd, &code->dst, &rd)) | |
2409 | goto end; | |
2410 | if (fetch (sd, &code->src, &ea)) | |
2411 | goto end; | |
2412 | ea = -ea; | |
2413 | res = rd + ea; | |
2414 | goto just_flags_alu8; | |
2415 | ||
2416 | case O (O_CMP, SW): /* cmp.w */ | |
2417 | if (fetch (sd, &code->dst, &rd)) | |
2418 | goto end; | |
2419 | if (fetch (sd, &code->src, &ea)) | |
2420 | goto end; | |
2421 | ea = -ea; | |
2422 | res = rd + ea; | |
2423 | goto just_flags_alu16; | |
2424 | ||
2425 | case O (O_CMP, SL): /* cmp.l */ | |
2426 | if (fetch (sd, &code->dst, &rd)) | |
2427 | goto end; | |
2428 | if (fetch (sd, &code->src, &ea)) | |
2429 | goto end; | |
2430 | ea = -ea; | |
2431 | res = rd + ea; | |
2432 | goto just_flags_alu32; | |
2433 | ||
2434 | case O (O_DEC, SB): /* dec.b */ | |
2435 | /* FIXME fetch. | |
2436 | * This insn only uses register operands, but still | |
2437 | * it would be cleaner to use fetch and store... */ | |
2438 | rd = GET_B_REG (code->src.reg); | |
2439 | ea = -1; | |
2440 | res = rd + ea; | |
2441 | SET_B_REG (code->src.reg, res); | |
2442 | goto just_flags_inc8; | |
2443 | ||
2444 | case O (O_DEC, SW): /* dec.w */ | |
2445 | /* FIXME fetch. | |
2446 | * This insn only uses register operands, but still | |
2447 | * it would be cleaner to use fetch and store... */ | |
2448 | rd = GET_W_REG (code->dst.reg); | |
2449 | ea = -code->src.literal; | |
2450 | res = rd + ea; | |
2451 | SET_W_REG (code->dst.reg, res); | |
2452 | goto just_flags_inc16; | |
2453 | ||
2454 | case O (O_DEC, SL): /* dec.l */ | |
2455 | /* FIXME fetch. | |
2456 | * This insn only uses register operands, but still | |
2457 | * it would be cleaner to use fetch and store... */ | |
2458 | rd = GET_L_REG (code->dst.reg); | |
2459 | ea = -code->src.literal; | |
2460 | res = rd + ea; | |
2461 | SET_L_REG (code->dst.reg, res); | |
2462 | goto just_flags_inc32; | |
2463 | ||
2464 | case O (O_INC, SB): /* inc.b */ | |
2465 | /* FIXME fetch. | |
2466 | * This insn only uses register operands, but still | |
2467 | * it would be cleaner to use fetch and store... */ | |
2468 | rd = GET_B_REG (code->src.reg); | |
2469 | ea = 1; | |
2470 | res = rd + ea; | |
2471 | SET_B_REG (code->src.reg, res); | |
2472 | goto just_flags_inc8; | |
2473 | ||
2474 | case O (O_INC, SW): /* inc.w */ | |
2475 | /* FIXME fetch. | |
2476 | * This insn only uses register operands, but still | |
2477 | * it would be cleaner to use fetch and store... */ | |
2478 | rd = GET_W_REG (code->dst.reg); | |
2479 | ea = code->src.literal; | |
2480 | res = rd + ea; | |
2481 | SET_W_REG (code->dst.reg, res); | |
2482 | goto just_flags_inc16; | |
2483 | ||
2484 | case O (O_INC, SL): /* inc.l */ | |
2485 | /* FIXME fetch. | |
2486 | * This insn only uses register operands, but still | |
2487 | * it would be cleaner to use fetch and store... */ | |
2488 | rd = GET_L_REG (code->dst.reg); | |
2489 | ea = code->src.literal; | |
2490 | res = rd + ea; | |
2491 | SET_L_REG (code->dst.reg, res); | |
2492 | goto just_flags_inc32; | |
2493 | ||
2494 | case O (O_LDC, SB): /* ldc.b */ | |
2495 | if (fetch (sd, &code->src, &res)) | |
2496 | goto end; | |
2497 | goto setc; | |
2498 | ||
2499 | case O (O_LDC, SW): /* ldc.w */ | |
2500 | if (fetch (sd, &code->src, &res)) | |
2501 | goto end; | |
2502 | ||
2503 | /* Word operand, value from MSB, must be shifted. */ | |
2504 | res >>= 8; | |
2505 | goto setc; | |
2506 | ||
2507 | case O (O_LDC, SL): /* ldc.l */ | |
2508 | if (fetch (sd, &code->src, &res)) | |
2509 | goto end; | |
2510 | switch (code->dst.type) { | |
2511 | case X (OP_SBR, SL): | |
2512 | h8_set_sbr (sd, res); | |
2513 | break; | |
2514 | case X (OP_VBR, SL): | |
2515 | h8_set_vbr (sd, res); | |
2516 | break; | |
2517 | default: | |
2518 | goto illegal; | |
2519 | } | |
2520 | goto next; | |
2521 | ||
2522 | case O (O_STC, SW): /* stc.w */ | |
2523 | case O (O_STC, SB): /* stc.b */ | |
2524 | if (code->src.type == X (OP_CCR, SB)) | |
2525 | { | |
2526 | BUILDSR (sd); | |
2527 | res = h8_get_ccr (sd); | |
2528 | } | |
2529 | else if (code->src.type == X (OP_EXR, SB) && h8300smode) | |
2530 | { | |
2531 | if (h8300smode) | |
2532 | h8_set_exr (sd, (trace << 7) | intMask); | |
2533 | res = h8_get_exr (sd); | |
2534 | } | |
2535 | else | |
2536 | goto illegal; | |
2537 | ||
2538 | /* Word operand, value to MSB, must be shifted. */ | |
2539 | if (code->opcode == X (O_STC, SW)) | |
2540 | res <<= 8; | |
2541 | if (store (sd, &code->dst, res)) | |
2542 | goto end; | |
2543 | goto next; | |
2544 | case O (O_STC, SL): /* stc.l */ | |
2545 | switch (code->src.type) { | |
2546 | case X (OP_SBR, SL): | |
2547 | res = h8_get_sbr (sd); | |
2548 | break; | |
2549 | case X (OP_VBR, SL): | |
2550 | res = h8_get_vbr (sd); | |
2551 | break; | |
2552 | default: | |
2553 | goto illegal; | |
2554 | } | |
2555 | if (store (sd, &code->dst, res)) | |
2556 | goto end; | |
2557 | goto next; | |
2558 | ||
2559 | case O (O_ANDC, SB): /* andc.b */ | |
2560 | if (code->dst.type == X (OP_CCR, SB)) | |
2561 | { | |
2562 | BUILDSR (sd); | |
2563 | rd = h8_get_ccr (sd); | |
2564 | } | |
2565 | else if (code->dst.type == X (OP_EXR, SB) && h8300smode) | |
2566 | { | |
2567 | if (h8300smode) | |
2568 | h8_set_exr (sd, (trace << 7) | intMask); | |
2569 | res = h8_get_exr (sd); | |
2570 | } | |
2571 | else | |
2572 | goto illegal; | |
2573 | ea = code->src.literal; | |
2574 | res = rd & ea; | |
2575 | goto setc; | |
2576 | ||
2577 | case O (O_ORC, SB): /* orc.b */ | |
2578 | if (code->dst.type == X (OP_CCR, SB)) | |
2579 | { | |
2580 | BUILDSR (sd); | |
2581 | rd = h8_get_ccr (sd); | |
2582 | } | |
2583 | else if (code->dst.type == X (OP_EXR, SB) && h8300smode) | |
2584 | { | |
2585 | if (h8300smode) | |
2586 | h8_set_exr (sd, (trace << 7) | intMask); | |
2587 | rd = h8_get_exr (sd); | |
2588 | } | |
2589 | else | |
2590 | goto illegal; | |
2591 | ea = code->src.literal; | |
2592 | res = rd | ea; | |
2593 | goto setc; | |
2594 | ||
2595 | case O (O_XORC, SB): /* xorc.b */ | |
2596 | if (code->dst.type == X (OP_CCR, SB)) | |
2597 | { | |
2598 | BUILDSR (sd); | |
2599 | rd = h8_get_ccr (sd); | |
2600 | } | |
2601 | else if (code->dst.type == X (OP_EXR, SB) && h8300smode) | |
2602 | { | |
2603 | if (h8300smode) | |
2604 | h8_set_exr (sd, (trace << 7) | intMask); | |
2605 | rd = h8_get_exr (sd); | |
2606 | } | |
2607 | else | |
2608 | goto illegal; | |
2609 | ea = code->src.literal; | |
2610 | res = rd ^ ea; | |
2611 | goto setc; | |
2612 | ||
2613 | case O (O_BRAS, SB): /* bra/s */ | |
2614 | /* This is basically an ordinary branch, with a delay slot. */ | |
2615 | if (fetch (sd, &code->src, &res)) | |
2616 | goto end; | |
2617 | ||
2618 | if ((res & 1) == 0) | |
2619 | goto illegal; | |
2620 | ||
2621 | res -= 1; | |
2622 | ||
2623 | /* Execution continues at next instruction, but | |
2624 | delayed_branch is set up for next cycle. */ | |
2625 | h8_set_delayed_branch (sd, code->next_pc + res); | |
2626 | pc = code->next_pc; | |
2627 | goto end; | |
2628 | ||
2629 | case O (O_BRAB, SB): /* bra rd.b */ | |
2630 | case O (O_BRAW, SW): /* bra rd.w */ | |
2631 | case O (O_BRAL, SL): /* bra erd.l */ | |
2632 | if (fetch (sd, &code->src, &rd)) | |
2633 | goto end; | |
2634 | switch (OP_SIZE (code->opcode)) { | |
2635 | case SB: rd &= 0xff; break; | |
2636 | case SW: rd &= 0xffff; break; | |
2637 | case SL: rd &= 0xffffffff; break; | |
2638 | } | |
2639 | pc = code->next_pc + rd; | |
2640 | goto end; | |
2641 | ||
2642 | case O (O_BRABC, SB): /* bra/bc, branch if bit clear */ | |
2643 | case O (O_BRABS, SB): /* bra/bs, branch if bit set */ | |
2644 | case O (O_BSRBC, SB): /* bsr/bc, call if bit clear */ | |
2645 | case O (O_BSRBS, SB): /* bsr/bs, call if bit set */ | |
2646 | if (fetch (sd, &code->dst, &rd) || | |
2647 | fetch (sd, &code->src, &bit)) | |
2648 | goto end; | |
2649 | ||
2650 | if (code->opcode == O (O_BRABC, SB) || /* branch if clear */ | |
2651 | code->opcode == O (O_BSRBC, SB)) /* call if clear */ | |
2652 | { | |
2653 | if ((rd & (1 << bit))) /* no branch */ | |
2654 | goto next; | |
2655 | } | |
2656 | else /* branch/call if set */ | |
2657 | { | |
2658 | if (!(rd & (1 << bit))) /* no branch */ | |
2659 | goto next; | |
2660 | } | |
2661 | ||
2662 | if (fetch (sd, &code->op3, &res)) /* branch */ | |
2663 | goto end; | |
2664 | pc = code->next_pc + res; | |
2665 | ||
2666 | if (code->opcode == O (O_BRABC, SB) || | |
2667 | code->opcode == O (O_BRABS, SB)) /* branch */ | |
2668 | goto end; | |
2669 | else /* call */ | |
2670 | goto call; | |
2671 | ||
2672 | case O (O_BRA, SN): | |
2673 | case O (O_BRA, SL): | |
2674 | case O (O_BRA, SW): | |
2675 | case O (O_BRA, SB): /* bra, branch always */ | |
2676 | if (1) | |
2677 | goto condtrue; | |
2678 | goto next; | |
2679 | ||
2680 | case O (O_BRN, SB): /* brn, ;-/ branch never? */ | |
2681 | if (0) | |
2682 | goto condtrue; | |
2683 | goto next; | |
2684 | ||
2685 | case O (O_BHI, SB): /* bhi */ | |
2686 | if ((C || Z) == 0) | |
2687 | goto condtrue; | |
2688 | goto next; | |
2689 | ||
2690 | ||
2691 | case O (O_BLS, SB): /* bls */ | |
2692 | if ((C || Z)) | |
2693 | goto condtrue; | |
2694 | goto next; | |
2695 | ||
2696 | case O (O_BCS, SB): /* bcs, branch if carry set */ | |
2697 | if ((C == 1)) | |
2698 | goto condtrue; | |
2699 | goto next; | |
2700 | ||
2701 | case O (O_BCC, SB): /* bcc, branch if carry clear */ | |
2702 | if ((C == 0)) | |
2703 | goto condtrue; | |
2704 | goto next; | |
2705 | ||
2706 | case O (O_BEQ, SB): /* beq, branch if zero set */ | |
2707 | if (Z) | |
2708 | goto condtrue; | |
2709 | goto next; | |
2710 | case O (O_BGT, SB): /* bgt */ | |
2711 | if (((Z || (N ^ V)) == 0)) | |
2712 | goto condtrue; | |
2713 | goto next; | |
2714 | ||
2715 | case O (O_BLE, SB): /* ble */ | |
2716 | if (((Z || (N ^ V)) == 1)) | |
2717 | goto condtrue; | |
2718 | goto next; | |
2719 | ||
2720 | case O (O_BGE, SB): /* bge */ | |
2721 | if ((N ^ V) == 0) | |
2722 | goto condtrue; | |
2723 | goto next; | |
2724 | case O (O_BLT, SB): /* blt */ | |
2725 | if ((N ^ V)) | |
2726 | goto condtrue; | |
2727 | goto next; | |
2728 | case O (O_BMI, SB): /* bmi */ | |
2729 | if ((N)) | |
2730 | goto condtrue; | |
2731 | goto next; | |
2732 | case O (O_BNE, SB): /* bne, branch if zero clear */ | |
2733 | if ((Z == 0)) | |
2734 | goto condtrue; | |
2735 | goto next; | |
2736 | ||
2737 | case O (O_BPL, SB): /* bpl */ | |
2738 | if (N == 0) | |
2739 | goto condtrue; | |
2740 | goto next; | |
2741 | case O (O_BVC, SB): /* bvc */ | |
2742 | if ((V == 0)) | |
2743 | goto condtrue; | |
2744 | goto next; | |
2745 | case O (O_BVS, SB): /* bvs */ | |
2746 | if ((V == 1)) | |
2747 | goto condtrue; | |
2748 | goto next; | |
2749 | ||
2750 | /* Trap for Command Line setup. */ | |
2751 | case O (O_SYS_CMDLINE, SB): | |
2752 | { | |
2753 | int i = 0; /* Loop counter. */ | |
2754 | int j = 0; /* Loop counter. */ | |
2755 | int ind_arg_len = 0; /* Length of each argument. */ | |
2756 | int no_of_args = 0; /* The no. or cmdline args. */ | |
2757 | int current_location = 0; /* Location of string. */ | |
2758 | int old_sp = 0; /* The Initial Stack Pointer. */ | |
2759 | int no_of_slots = 0; /* No. of slots required on the stack | |
2760 | for storing cmdline args. */ | |
2761 | int sp_move = 0; /* No. of locations by which the stack needs | |
2762 | to grow. */ | |
2763 | int new_sp = 0; /* The final stack pointer location passed | |
2764 | back. */ | |
2765 | int *argv_ptrs; /* Pointers of argv strings to be stored. */ | |
2766 | int argv_ptrs_location = 0; /* Location of pointers to cmdline | |
2767 | args on the stack. */ | |
2768 | int char_ptr_size = 0; /* Size of a character pointer on | |
2769 | target machine. */ | |
2770 | int addr_cmdline = 0; /* Memory location where cmdline has | |
2771 | to be stored. */ | |
2772 | int size_cmdline = 0; /* Size of cmdline. */ | |
2773 | ||
2774 | /* Set the address of 256 free locations where command line is | |
2775 | stored. */ | |
2776 | addr_cmdline = cmdline_location(); | |
2777 | h8_set_reg (sd, 0, addr_cmdline); | |
2778 | ||
2779 | /* Counting the no. of commandline arguments. */ | |
2780 | for (i = 0; h8_get_cmdline_arg (sd, i) != NULL; i++) | |
2781 | continue; | |
2782 | ||
2783 | /* No. of arguments in the command line. */ | |
2784 | no_of_args = i; | |
2785 | ||
2786 | /* Current location is just a temporary variable,which we are | |
2787 | setting to the point to the start of our commandline string. */ | |
2788 | current_location = addr_cmdline; | |
2789 | ||
2790 | /* Allocating space for storing pointers of the command line | |
2791 | arguments. */ | |
2792 | argv_ptrs = (int *) malloc (sizeof (int) * no_of_args); | |
2793 | ||
2794 | /* Setting char_ptr_size to the sizeof (char *) on the different | |
2795 | architectures. */ | |
59768597 | 2796 | if ((h8300hmode || h8300smode) && !h8300_normal_mode) |
dc5c3759 MS |
2797 | { |
2798 | char_ptr_size = 4; | |
2799 | } | |
2800 | else | |
2801 | { | |
2802 | char_ptr_size = 2; | |
2803 | } | |
2804 | ||
2805 | for (i = 0; i < no_of_args; i++) | |
2806 | { | |
2807 | ind_arg_len = 0; | |
2808 | ||
2809 | /* The size of the commandline argument. */ | |
2810 | ind_arg_len = strlen (h8_get_cmdline_arg (sd, i) + 1); | |
2811 | ||
2812 | /* The total size of the command line string. */ | |
2813 | size_cmdline += ind_arg_len; | |
2814 | ||
2815 | /* As we have only 256 bytes, we need to provide a graceful | |
2816 | exit. Anyways, a program using command line arguments | |
2817 | where we cannot store all the command line arguments | |
2818 | given may behave unpredictably. */ | |
2819 | if (size_cmdline >= 256) | |
2820 | { | |
2821 | h8_set_reg (sd, 0, 0); | |
2822 | goto next; | |
2823 | } | |
2824 | else | |
2825 | { | |
2826 | /* current_location points to the memory where the next | |
2827 | commandline argument is stored. */ | |
2828 | argv_ptrs[i] = current_location; | |
2829 | for (j = 0; j < ind_arg_len; j++) | |
2830 | { | |
2831 | SET_MEMORY_B ((current_location + | |
2832 | (sizeof (char) * j)), | |
2833 | *(h8_get_cmdline_arg (sd, i) + | |
2834 | sizeof (char) * j)); | |
2835 | } | |
2836 | ||
2837 | /* Setting current_location to the starting of next | |
2838 | argument. */ | |
2839 | current_location += ind_arg_len; | |
2840 | } | |
2841 | } | |
2842 | ||
2843 | /* This is the original position of the stack pointer. */ | |
2844 | old_sp = h8_get_reg (sd, SP_REGNUM); | |
2845 | ||
2846 | /* We need space from the stack to store the pointers to argvs. */ | |
2847 | /* As we will infringe on the stack, we need to shift the stack | |
2848 | pointer so that the data is not overwritten. We calculate how | |
2849 | much space is required. */ | |
2850 | sp_move = (no_of_args) * (char_ptr_size); | |
2851 | ||
2852 | /* The final position of stack pointer, we have thus taken some | |
2853 | space from the stack. */ | |
2854 | new_sp = old_sp - sp_move; | |
2855 | ||
2856 | /* Temporary variable holding value where the argv pointers need | |
2857 | to be stored. */ | |
2858 | argv_ptrs_location = new_sp; | |
2859 | ||
2860 | /* The argv pointers are stored at sequential locations. As per | |
2861 | the H8300 ABI. */ | |
2862 | for (i = 0; i < no_of_args; i++) | |
2863 | { | |
2864 | /* Saving the argv pointer. */ | |
59768597 | 2865 | if ((h8300hmode || h8300smode) && !h8300_normal_mode) |
dc5c3759 MS |
2866 | { |
2867 | SET_MEMORY_L (argv_ptrs_location, argv_ptrs[i]); | |
2868 | } | |
2869 | else | |
2870 | { | |
2871 | SET_MEMORY_W (argv_ptrs_location, argv_ptrs[i]); | |
2872 | } | |
2873 | ||
2874 | /* The next location where the pointer to the next argv | |
2875 | string has to be stored. */ | |
2876 | argv_ptrs_location += char_ptr_size; | |
2877 | } | |
2878 | ||
2879 | /* Required by POSIX, Setting 0x0 at the end of the list of argv | |
2880 | pointers. */ | |
59768597 | 2881 | if ((h8300hmode || h8300smode) && !h8300_normal_mode) |
dc5c3759 MS |
2882 | { |
2883 | SET_MEMORY_L (old_sp, 0x0); | |
2884 | } | |
2885 | else | |
2886 | { | |
2887 | SET_MEMORY_W (old_sp, 0x0); | |
2888 | } | |
2889 | ||
2890 | /* Freeing allocated memory. */ | |
2891 | free (argv_ptrs); | |
2892 | for (i = 0; i <= no_of_args; i++) | |
2893 | { | |
2894 | free (h8_get_cmdline_arg (sd, i)); | |
2895 | } | |
2896 | free (h8_get_command_line (sd)); | |
2897 | ||
2898 | /* The no. of argv arguments are returned in Reg 0. */ | |
2899 | h8_set_reg (sd, 0, no_of_args); | |
2900 | /* The Pointer to argv in Register 1. */ | |
2901 | h8_set_reg (sd, 1, new_sp); | |
2902 | /* Setting the stack pointer to the new value. */ | |
2903 | h8_set_reg (sd, SP_REGNUM, new_sp); | |
2904 | } | |
2905 | goto next; | |
2906 | ||
2907 | /* System call processing starts. */ | |
2908 | case O (O_SYS_OPEN, SB): | |
2909 | { | |
2910 | int len = 0; /* Length of filename. */ | |
2911 | char *filename; /* Filename would go here. */ | |
2912 | char temp_char; /* Temporary character */ | |
2913 | int mode = 0; /* Mode bits for the file. */ | |
2914 | int open_return; /* Return value of open, file descriptor. */ | |
2915 | int i; /* Loop counter */ | |
2916 | int filename_ptr; /* Pointer to filename in cpu memory. */ | |
2917 | ||
2918 | /* Setting filename_ptr to first argument of open, */ | |
2919 | /* and trying to get mode. */ | |
59768597 | 2920 | if ((h8300sxmode || h8300hmode || h8300smode) && !h8300_normal_mode) |
dc5c3759 MS |
2921 | { |
2922 | filename_ptr = GET_L_REG (0); | |
2923 | mode = GET_MEMORY_L (h8_get_reg (sd, SP_REGNUM) + 4); | |
2924 | } | |
2925 | else | |
2926 | { | |
2927 | filename_ptr = GET_W_REG (0); | |
2928 | mode = GET_MEMORY_W (h8_get_reg (sd, SP_REGNUM) + 2); | |
2929 | } | |
2930 | ||
2931 | /* Trying to find the length of the filename. */ | |
2932 | temp_char = GET_MEMORY_B (h8_get_reg (sd, 0)); | |
2933 | ||
2934 | len = 1; | |
2935 | while (temp_char != '\0') | |
2936 | { | |
2937 | temp_char = GET_MEMORY_B (filename_ptr + len); | |
2938 | len++; | |
2939 | } | |
2940 | ||
2941 | /* Allocating space for the filename. */ | |
2942 | filename = (char *) malloc (sizeof (char) * len); | |
2943 | ||
2944 | /* String copying the filename from memory. */ | |
2945 | for (i = 0; i < len; i++) | |
2946 | { | |
2947 | temp_char = GET_MEMORY_B (filename_ptr + i); | |
2948 | filename[i] = temp_char; | |
2949 | } | |
2950 | ||
2951 | /* Callback to open and return the file descriptor. */ | |
2952 | open_return = sim_callback->open (sim_callback, filename, mode); | |
2953 | ||
2954 | /* Return value in register 0. */ | |
2955 | h8_set_reg (sd, 0, open_return); | |
2956 | ||
2957 | /* Freeing memory used for filename. */ | |
2958 | free (filename); | |
2959 | } | |
2960 | goto next; | |
2961 | ||
2962 | case O (O_SYS_READ, SB): | |
2963 | { | |
2964 | char *char_ptr; /* Where characters read would be stored. */ | |
2965 | int fd; /* File descriptor */ | |
2966 | int buf_size; /* BUF_SIZE parameter in read. */ | |
2967 | int i = 0; /* Temporary Loop counter */ | |
2968 | int read_return = 0; /* Return value from callback to | |
2969 | read. */ | |
2970 | ||
59768597 SA |
2971 | fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0); |
2972 | buf_size = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (2) : GET_W_REG (2); | |
dc5c3759 MS |
2973 | |
2974 | char_ptr = (char *) malloc (sizeof (char) * buf_size); | |
2975 | ||
2976 | /* Callback to read and return the no. of characters read. */ | |
2977 | read_return = | |
2978 | sim_callback->read (sim_callback, fd, char_ptr, buf_size); | |
2979 | ||
2980 | /* The characters read are stored in cpu memory. */ | |
2981 | for (i = 0; i < buf_size; i++) | |
2982 | { | |
2983 | SET_MEMORY_B ((h8_get_reg (sd, 1) + (sizeof (char) * i)), | |
2984 | *(char_ptr + (sizeof (char) * i))); | |
2985 | } | |
2986 | ||
2987 | /* Return value in Register 0. */ | |
2988 | h8_set_reg (sd, 0, read_return); | |
2989 | ||
2990 | /* Freeing memory used as buffer. */ | |
2991 | free (char_ptr); | |
2992 | } | |
2993 | goto next; | |
2994 | ||
2995 | case O (O_SYS_WRITE, SB): | |
2996 | { | |
2997 | int fd; /* File descriptor */ | |
2998 | char temp_char; /* Temporary character */ | |
2999 | int len; /* Length of write, Parameter II to write. */ | |
3000 | int char_ptr; /* Character Pointer, Parameter I of write. */ | |
3001 | char *ptr; /* Where characters to be written are stored. | |
3002 | */ | |
3003 | int write_return; /* Return value from callback to write. */ | |
3004 | int i = 0; /* Loop counter */ | |
3005 | ||
59768597 SA |
3006 | fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0); |
3007 | char_ptr = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (1) : GET_W_REG (1); | |
3008 | len = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (2) : GET_W_REG (2); | |
dc5c3759 MS |
3009 | |
3010 | /* Allocating space for the characters to be written. */ | |
3011 | ptr = (char *) malloc (sizeof (char) * len); | |
3012 | ||
3013 | /* Fetching the characters from cpu memory. */ | |
3014 | for (i = 0; i < len; i++) | |
3015 | { | |
3016 | temp_char = GET_MEMORY_B (char_ptr + i); | |
3017 | ptr[i] = temp_char; | |
3018 | } | |
3019 | ||
3020 | /* Callback write and return the no. of characters written. */ | |
3021 | write_return = sim_callback->write (sim_callback, fd, ptr, len); | |
3022 | ||
3023 | /* Return value in Register 0. */ | |
3024 | h8_set_reg (sd, 0, write_return); | |
3025 | ||
3026 | /* Freeing memory used as buffer. */ | |
3027 | free (ptr); | |
3028 | } | |
3029 | goto next; | |
3030 | ||
3031 | case O (O_SYS_LSEEK, SB): | |
3032 | { | |
3033 | int fd; /* File descriptor */ | |
3034 | int offset; /* Offset */ | |
3035 | int origin; /* Origin */ | |
3036 | int lseek_return; /* Return value from callback to lseek. */ | |
3037 | ||
59768597 SA |
3038 | fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0); |
3039 | offset = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (1) : GET_W_REG (1); | |
3040 | origin = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (2) : GET_W_REG (2); | |
c906108c | 3041 | |
dc5c3759 MS |
3042 | /* Callback lseek and return offset. */ |
3043 | lseek_return = | |
3044 | sim_callback->lseek (sim_callback, fd, offset, origin); | |
3b02cf92 | 3045 | |
dc5c3759 MS |
3046 | /* Return value in register 0. */ |
3047 | h8_set_reg (sd, 0, lseek_return); | |
3048 | } | |
3049 | goto next; | |
c906108c | 3050 | |
dc5c3759 MS |
3051 | case O (O_SYS_CLOSE, SB): |
3052 | { | |
3053 | int fd; /* File descriptor */ | |
3054 | int close_return; /* Return value from callback to close. */ | |
c906108c | 3055 | |
59768597 | 3056 | fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0); |
c906108c | 3057 | |
dc5c3759 MS |
3058 | /* Callback close and return. */ |
3059 | close_return = sim_callback->close (sim_callback, fd); | |
c906108c | 3060 | |
dc5c3759 MS |
3061 | /* Return value in register 0. */ |
3062 | h8_set_reg (sd, 0, close_return); | |
3063 | } | |
3064 | goto next; | |
c906108c | 3065 | |
dc5c3759 MS |
3066 | case O (O_SYS_FSTAT, SB): |
3067 | { | |
3068 | int fd; /* File descriptor */ | |
3069 | struct stat stat_rec; /* Stat record */ | |
3070 | int fstat_return; /* Return value from callback to stat. */ | |
3071 | int stat_ptr; /* Pointer to stat record. */ | |
3072 | char *temp_stat_ptr; /* Temporary stat_rec pointer. */ | |
c906108c | 3073 | |
59768597 | 3074 | fd = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0); |
c906108c | 3075 | |
dc5c3759 | 3076 | /* Setting stat_ptr to second argument of stat. */ |
59768597 | 3077 | stat_ptr = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (1) : GET_W_REG (1); |
c906108c | 3078 | |
dc5c3759 MS |
3079 | /* Callback stat and return. */ |
3080 | fstat_return = sim_callback->fstat (sim_callback, fd, &stat_rec); | |
c906108c | 3081 | |
dc5c3759 MS |
3082 | /* Have stat_ptr point to starting of stat_rec. */ |
3083 | temp_stat_ptr = (char *) (&stat_rec); | |
c906108c | 3084 | |
dc5c3759 MS |
3085 | /* Setting up the stat structure returned. */ |
3086 | SET_MEMORY_W (stat_ptr, stat_rec.st_dev); | |
3087 | stat_ptr += 2; | |
3088 | SET_MEMORY_W (stat_ptr, stat_rec.st_ino); | |
3089 | stat_ptr += 2; | |
3090 | SET_MEMORY_L (stat_ptr, stat_rec.st_mode); | |
3091 | stat_ptr += 4; | |
3092 | SET_MEMORY_W (stat_ptr, stat_rec.st_nlink); | |
3093 | stat_ptr += 2; | |
3094 | SET_MEMORY_W (stat_ptr, stat_rec.st_uid); | |
3095 | stat_ptr += 2; | |
3096 | SET_MEMORY_W (stat_ptr, stat_rec.st_gid); | |
3097 | stat_ptr += 2; | |
3098 | SET_MEMORY_W (stat_ptr, stat_rec.st_rdev); | |
3099 | stat_ptr += 2; | |
3100 | SET_MEMORY_L (stat_ptr, stat_rec.st_size); | |
3101 | stat_ptr += 4; | |
3102 | SET_MEMORY_L (stat_ptr, stat_rec.st_atime); | |
3103 | stat_ptr += 8; | |
3104 | SET_MEMORY_L (stat_ptr, stat_rec.st_mtime); | |
3105 | stat_ptr += 8; | |
3106 | SET_MEMORY_L (stat_ptr, stat_rec.st_ctime); | |
c906108c | 3107 | |
dc5c3759 MS |
3108 | /* Return value in register 0. */ |
3109 | h8_set_reg (sd, 0, fstat_return); | |
3110 | } | |
3111 | goto next; | |
c906108c | 3112 | |
dc5c3759 MS |
3113 | case O (O_SYS_STAT, SB): |
3114 | { | |
3115 | int len = 0; /* Length of filename. */ | |
3116 | char *filename; /* Filename would go here. */ | |
3117 | char temp_char; /* Temporary character */ | |
3118 | int filename_ptr; /* Pointer to filename in cpu memory. */ | |
3119 | struct stat stat_rec; /* Stat record */ | |
3120 | int stat_return; /* Return value from callback to stat */ | |
3121 | int stat_ptr; /* Pointer to stat record. */ | |
3122 | char *temp_stat_ptr; /* Temporary stat_rec pointer. */ | |
3123 | int i = 0; /* Loop Counter */ | |
c906108c | 3124 | |
dc5c3759 | 3125 | /* Setting filename_ptr to first argument of open. */ |
59768597 | 3126 | filename_ptr = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (0) : GET_W_REG (0); |
c906108c | 3127 | |
dc5c3759 MS |
3128 | /* Trying to find the length of the filename. */ |
3129 | temp_char = GET_MEMORY_B (h8_get_reg (sd, 0)); | |
c906108c | 3130 | |
dc5c3759 MS |
3131 | len = 1; |
3132 | while (temp_char != '\0') | |
3133 | { | |
3134 | temp_char = GET_MEMORY_B (filename_ptr + len); | |
3135 | len++; | |
3136 | } | |
d0fe2f7e | 3137 | |
dc5c3759 MS |
3138 | /* Allocating space for the filename. */ |
3139 | filename = (char *) malloc (sizeof (char) * len); | |
c3f4437e | 3140 | |
dc5c3759 MS |
3141 | /* String copying the filename from memory. */ |
3142 | for (i = 0; i < len; i++) | |
3143 | { | |
3144 | temp_char = GET_MEMORY_B (filename_ptr + i); | |
3145 | filename[i] = temp_char; | |
3146 | } | |
c906108c | 3147 | |
dc5c3759 MS |
3148 | /* Setting stat_ptr to second argument of stat. */ |
3149 | /* stat_ptr = h8_get_reg (sd, 1); */ | |
59768597 | 3150 | stat_ptr = (h8300hmode && !h8300_normal_mode) ? GET_L_REG (1) : GET_W_REG (1); |
c906108c | 3151 | |
dc5c3759 MS |
3152 | /* Callback stat and return. */ |
3153 | stat_return = | |
3154 | sim_callback->stat (sim_callback, filename, &stat_rec); | |
c906108c | 3155 | |
dc5c3759 MS |
3156 | /* Have stat_ptr point to starting of stat_rec. */ |
3157 | temp_stat_ptr = (char *) (&stat_rec); | |
3158 | ||
3159 | /* Freeing memory used for filename. */ | |
3160 | free (filename); | |
3161 | ||
3162 | /* Setting up the stat structure returned. */ | |
3163 | SET_MEMORY_W (stat_ptr, stat_rec.st_dev); | |
3164 | stat_ptr += 2; | |
3165 | SET_MEMORY_W (stat_ptr, stat_rec.st_ino); | |
3166 | stat_ptr += 2; | |
3167 | SET_MEMORY_L (stat_ptr, stat_rec.st_mode); | |
3168 | stat_ptr += 4; | |
3169 | SET_MEMORY_W (stat_ptr, stat_rec.st_nlink); | |
3170 | stat_ptr += 2; | |
3171 | SET_MEMORY_W (stat_ptr, stat_rec.st_uid); | |
3172 | stat_ptr += 2; | |
3173 | SET_MEMORY_W (stat_ptr, stat_rec.st_gid); | |
3174 | stat_ptr += 2; | |
3175 | SET_MEMORY_W (stat_ptr, stat_rec.st_rdev); | |
3176 | stat_ptr += 2; | |
3177 | SET_MEMORY_L (stat_ptr, stat_rec.st_size); | |
3178 | stat_ptr += 4; | |
3179 | SET_MEMORY_L (stat_ptr, stat_rec.st_atime); | |
3180 | stat_ptr += 8; | |
3181 | SET_MEMORY_L (stat_ptr, stat_rec.st_mtime); | |
3182 | stat_ptr += 8; | |
3183 | SET_MEMORY_L (stat_ptr, stat_rec.st_ctime); | |
3184 | ||
3185 | /* Return value in register 0. */ | |
3186 | h8_set_reg (sd, 0, stat_return); | |
3187 | } | |
c906108c | 3188 | goto next; |
dc5c3759 | 3189 | /* End of system call processing. */ |
c906108c | 3190 | |
dc5c3759 MS |
3191 | case O (O_NOT, SB): /* not.b */ |
3192 | if (fetch2 (sd, &code->src, &rd)) | |
3193 | goto end; | |
3194 | rd = ~rd; | |
3195 | v = 0; | |
3196 | goto shift8; | |
c906108c | 3197 | |
dc5c3759 MS |
3198 | case O (O_NOT, SW): /* not.w */ |
3199 | if (fetch2 (sd, &code->src, &rd)) | |
3200 | goto end; | |
3201 | rd = ~rd; | |
3202 | v = 0; | |
3203 | goto shift16; | |
c906108c | 3204 | |
dc5c3759 MS |
3205 | case O (O_NOT, SL): /* not.l */ |
3206 | if (fetch2 (sd, &code->src, &rd)) | |
3207 | goto end; | |
3208 | rd = ~rd; | |
3209 | v = 0; | |
3210 | goto shift32; | |
c906108c | 3211 | |
dc5c3759 MS |
3212 | case O (O_SHLL, SB): /* shll.b */ |
3213 | case O (O_SHLR, SB): /* shlr.b */ | |
3214 | if (fetch2 (sd, &code->dst, &rd)) | |
3215 | goto end; | |
c906108c | 3216 | |
55acb21b MS |
3217 | if (memcmp (&code->src, &code->dst, sizeof (code->src)) == 0) |
3218 | ea = 1; /* unary op */ | |
3219 | else /* binary op */ | |
dc5c3759 | 3220 | fetch (sd, &code->src, &ea); |
c906108c | 3221 | |
dc5c3759 MS |
3222 | if (code->opcode == O (O_SHLL, SB)) |
3223 | { | |
3224 | v = (ea > 8); | |
3225 | c = rd & (0x80 >> (ea - 1)); | |
3226 | rd <<= ea; | |
3227 | } | |
3228 | else | |
3229 | { | |
3230 | v = 0; | |
3231 | c = rd & (1 << (ea - 1)); | |
3232 | rd = (unsigned char) rd >> ea; | |
3233 | } | |
3234 | goto shift8; | |
c906108c | 3235 | |
dc5c3759 MS |
3236 | case O (O_SHLL, SW): /* shll.w */ |
3237 | case O (O_SHLR, SW): /* shlr.w */ | |
3238 | if (fetch2 (sd, &code->dst, &rd)) | |
3239 | goto end; | |
c906108c | 3240 | |
55acb21b MS |
3241 | if (memcmp (&code->src, &code->dst, sizeof (code->src)) == 0) |
3242 | ea = 1; /* unary op */ | |
dc5c3759 | 3243 | else |
55acb21b | 3244 | fetch (sd, &code->src, &ea); |
c906108c | 3245 | |
dc5c3759 MS |
3246 | if (code->opcode == O (O_SHLL, SW)) |
3247 | { | |
3248 | v = (ea > 16); | |
3249 | c = rd & (0x8000 >> (ea - 1)); | |
3250 | rd <<= ea; | |
3251 | } | |
3252 | else | |
3253 | { | |
3254 | v = 0; | |
3255 | c = rd & (1 << (ea - 1)); | |
3256 | rd = (unsigned short) rd >> ea; | |
3257 | } | |
3258 | goto shift16; | |
c906108c | 3259 | |
dc5c3759 MS |
3260 | case O (O_SHLL, SL): /* shll.l */ |
3261 | case O (O_SHLR, SL): /* shlr.l */ | |
3262 | if (fetch2 (sd, &code->dst, &rd)) | |
3263 | goto end; | |
c906108c | 3264 | |
55acb21b MS |
3265 | if (memcmp (&code->src, &code->dst, sizeof (code->src)) == 0) |
3266 | ea = 1; /* unary op */ | |
dc5c3759 | 3267 | else |
55acb21b | 3268 | fetch (sd, &code->src, &ea); |
c906108c | 3269 | |
dc5c3759 | 3270 | if (code->opcode == O (O_SHLL, SL)) |
c3f4437e | 3271 | { |
dc5c3759 MS |
3272 | v = (ea > 32); |
3273 | c = rd & (0x80000000 >> (ea - 1)); | |
3274 | rd <<= ea; | |
c3f4437e | 3275 | } |
dc5c3759 | 3276 | else |
c3f4437e | 3277 | { |
dc5c3759 MS |
3278 | v = 0; |
3279 | c = rd & (1 << (ea - 1)); | |
3280 | rd = (unsigned int) rd >> ea; | |
c3f4437e | 3281 | } |
dc5c3759 MS |
3282 | goto shift32; |
3283 | ||
3284 | case O (O_SHAL, SB): | |
3285 | case O (O_SHAR, SB): | |
3286 | if (fetch2 (sd, &code->dst, &rd)) | |
3287 | goto end; | |
3288 | ||
3289 | if (code->src.type == X (OP_IMM, SB)) | |
3290 | fetch (sd, &code->src, &ea); | |
c3f4437e | 3291 | else |
dc5c3759 | 3292 | ea = 1; |
6147b1f6 | 3293 | |
dc5c3759 | 3294 | if (code->opcode == O (O_SHAL, SB)) |
c3f4437e | 3295 | { |
dc5c3759 MS |
3296 | c = rd & (0x80 >> (ea - 1)); |
3297 | res = rd >> (7 - ea); | |
3298 | v = ((res & 1) && !(res & 2)) | |
3299 | || (!(res & 1) && (res & 2)); | |
3300 | rd <<= ea; | |
c3f4437e | 3301 | } |
dc5c3759 | 3302 | else |
c3f4437e | 3303 | { |
dc5c3759 MS |
3304 | c = rd & (1 << (ea - 1)); |
3305 | v = 0; | |
3306 | rd = ((signed char) rd) >> ea; | |
c3f4437e | 3307 | } |
dc5c3759 MS |
3308 | goto shift8; |
3309 | ||
3310 | case O (O_SHAL, SW): | |
3311 | case O (O_SHAR, SW): | |
3312 | if (fetch2 (sd, &code->dst, &rd)) | |
3313 | goto end; | |
3314 | ||
3315 | if (code->src.type == X (OP_IMM, SW)) | |
3316 | fetch (sd, &code->src, &ea); | |
c3f4437e | 3317 | else |
dc5c3759 | 3318 | ea = 1; |
c906108c | 3319 | |
dc5c3759 | 3320 | if (code->opcode == O (O_SHAL, SW)) |
c3f4437e | 3321 | { |
dc5c3759 MS |
3322 | c = rd & (0x8000 >> (ea - 1)); |
3323 | res = rd >> (15 - ea); | |
3324 | v = ((res & 1) && !(res & 2)) | |
3325 | || (!(res & 1) && (res & 2)); | |
3326 | rd <<= ea; | |
c3f4437e | 3327 | } |
dc5c3759 | 3328 | else |
c3f4437e | 3329 | { |
dc5c3759 MS |
3330 | c = rd & (1 << (ea - 1)); |
3331 | v = 0; | |
3332 | rd = ((signed short) rd) >> ea; | |
c3f4437e | 3333 | } |
dc5c3759 MS |
3334 | goto shift16; |
3335 | ||
3336 | case O (O_SHAL, SL): | |
3337 | case O (O_SHAR, SL): | |
3338 | if (fetch2 (sd, &code->dst, &rd)) | |
3339 | goto end; | |
3340 | ||
3341 | if (code->src.type == X (OP_IMM, SL)) | |
3342 | fetch (sd, &code->src, &ea); | |
3343 | else | |
3344 | ea = 1; | |
c906108c | 3345 | |
dc5c3759 | 3346 | if (code->opcode == O (O_SHAL, SL)) |
c3f4437e | 3347 | { |
dc5c3759 MS |
3348 | c = rd & (0x80000000 >> (ea - 1)); |
3349 | res = rd >> (31 - ea); | |
3350 | v = ((res & 1) && !(res & 2)) | |
3351 | || (!(res & 1) && (res & 2)); | |
3352 | rd <<= ea; | |
c3f4437e | 3353 | } |
dc5c3759 | 3354 | else |
c3f4437e | 3355 | { |
dc5c3759 MS |
3356 | c = rd & (1 << (ea - 1)); |
3357 | v = 0; | |
3358 | rd = ((signed int) rd) >> ea; | |
c3f4437e | 3359 | } |
dc5c3759 | 3360 | goto shift32; |
c906108c | 3361 | |
dc5c3759 MS |
3362 | case O (O_ROTL, SB): |
3363 | case O (O_ROTR, SB): | |
3364 | if (fetch2 (sd, &code->dst, &rd)) | |
3365 | goto end; | |
c906108c | 3366 | |
dc5c3759 MS |
3367 | if (code->src.type == X (OP_IMM, SB)) |
3368 | fetch (sd, &code->src, &ea); | |
3369 | else | |
3370 | ea = 1; | |
c906108c | 3371 | |
dc5c3759 MS |
3372 | while (ea--) |
3373 | if (code->opcode == O (O_ROTL, SB)) | |
3374 | { | |
3375 | c = rd & 0x80; | |
3376 | rd <<= 1; | |
3377 | if (c) | |
3378 | rd |= 1; | |
3379 | } | |
3380 | else | |
3381 | { | |
3382 | c = rd & 1; | |
3383 | rd = ((unsigned char) rd) >> 1; | |
3384 | if (c) | |
3385 | rd |= 0x80; | |
3386 | } | |
c906108c | 3387 | |
dc5c3759 MS |
3388 | v = 0; |
3389 | goto shift8; | |
c906108c | 3390 | |
dc5c3759 MS |
3391 | case O (O_ROTL, SW): |
3392 | case O (O_ROTR, SW): | |
3393 | if (fetch2 (sd, &code->dst, &rd)) | |
3394 | goto end; | |
c906108c | 3395 | |
dc5c3759 MS |
3396 | if (code->src.type == X (OP_IMM, SW)) |
3397 | fetch (sd, &code->src, &ea); | |
3398 | else | |
3399 | ea = 1; | |
c906108c | 3400 | |
dc5c3759 MS |
3401 | while (ea--) |
3402 | if (code->opcode == O (O_ROTL, SW)) | |
3403 | { | |
3404 | c = rd & 0x8000; | |
3405 | rd <<= 1; | |
3406 | if (c) | |
3407 | rd |= 1; | |
3408 | } | |
3409 | else | |
3410 | { | |
3411 | c = rd & 1; | |
3412 | rd = ((unsigned short) rd) >> 1; | |
3413 | if (c) | |
3414 | rd |= 0x8000; | |
3415 | } | |
c906108c | 3416 | |
dc5c3759 MS |
3417 | v = 0; |
3418 | goto shift16; | |
c906108c | 3419 | |
dc5c3759 MS |
3420 | case O (O_ROTL, SL): |
3421 | case O (O_ROTR, SL): | |
3422 | if (fetch2 (sd, &code->dst, &rd)) | |
3423 | goto end; | |
c906108c | 3424 | |
dc5c3759 MS |
3425 | if (code->src.type == X (OP_IMM, SL)) |
3426 | fetch (sd, &code->src, &ea); | |
3427 | else | |
3428 | ea = 1; | |
c906108c | 3429 | |
dc5c3759 MS |
3430 | while (ea--) |
3431 | if (code->opcode == O (O_ROTL, SL)) | |
3432 | { | |
3433 | c = rd & 0x80000000; | |
3434 | rd <<= 1; | |
3435 | if (c) | |
3436 | rd |= 1; | |
3437 | } | |
3438 | else | |
3439 | { | |
3440 | c = rd & 1; | |
3441 | rd = ((unsigned int) rd) >> 1; | |
3442 | if (c) | |
3443 | rd |= 0x80000000; | |
3444 | } | |
c906108c | 3445 | |
dc5c3759 MS |
3446 | v = 0; |
3447 | goto shift32; | |
c906108c | 3448 | |
dc5c3759 MS |
3449 | case O (O_ROTXL, SB): |
3450 | case O (O_ROTXR, SB): | |
3451 | if (fetch2 (sd, &code->dst, &rd)) | |
3452 | goto end; | |
d1360fb0 | 3453 | |
dc5c3759 MS |
3454 | if (code->src.type == X (OP_IMM, SB)) |
3455 | fetch (sd, &code->src, &ea); | |
3456 | else | |
3457 | ea = 1; | |
d1360fb0 | 3458 | |
dc5c3759 MS |
3459 | while (ea--) |
3460 | if (code->opcode == O (O_ROTXL, SB)) | |
3461 | { | |
3462 | res = rd & 0x80; | |
3463 | rd <<= 1; | |
3464 | if (C) | |
3465 | rd |= 1; | |
3466 | c = res; | |
3467 | } | |
3468 | else | |
3469 | { | |
3470 | res = rd & 1; | |
3471 | rd = ((unsigned char) rd) >> 1; | |
3472 | if (C) | |
3473 | rd |= 0x80; | |
3474 | c = res; | |
3475 | } | |
d1360fb0 | 3476 | |
dc5c3759 MS |
3477 | v = 0; |
3478 | goto shift8; | |
d1360fb0 | 3479 | |
dc5c3759 MS |
3480 | case O (O_ROTXL, SW): |
3481 | case O (O_ROTXR, SW): | |
3482 | if (fetch2 (sd, &code->dst, &rd)) | |
3483 | goto end; | |
d1360fb0 | 3484 | |
dc5c3759 MS |
3485 | if (code->src.type == X (OP_IMM, SW)) |
3486 | fetch (sd, &code->src, &ea); | |
3487 | else | |
3488 | ea = 1; | |
d1360fb0 | 3489 | |
dc5c3759 MS |
3490 | while (ea--) |
3491 | if (code->opcode == O (O_ROTXL, SW)) | |
d1360fb0 | 3492 | { |
dc5c3759 MS |
3493 | res = rd & 0x8000; |
3494 | rd <<= 1; | |
3495 | if (C) | |
3496 | rd |= 1; | |
3497 | c = res; | |
d1360fb0 V |
3498 | } |
3499 | else | |
3500 | { | |
dc5c3759 MS |
3501 | res = rd & 1; |
3502 | rd = ((unsigned short) rd) >> 1; | |
3503 | if (C) | |
3504 | rd |= 0x8000; | |
3505 | c = res; | |
d1360fb0 V |
3506 | } |
3507 | ||
dc5c3759 MS |
3508 | v = 0; |
3509 | goto shift16; | |
d1360fb0 | 3510 | |
dc5c3759 MS |
3511 | case O (O_ROTXL, SL): |
3512 | case O (O_ROTXR, SL): | |
3513 | if (fetch2 (sd, &code->dst, &rd)) | |
3514 | goto end; | |
d1360fb0 | 3515 | |
dc5c3759 MS |
3516 | if (code->src.type == X (OP_IMM, SL)) |
3517 | fetch (sd, &code->src, &ea); | |
3518 | else | |
3519 | ea = 1; | |
d1360fb0 | 3520 | |
dc5c3759 MS |
3521 | while (ea--) |
3522 | if (code->opcode == O (O_ROTXL, SL)) | |
3523 | { | |
3524 | res = rd & 0x80000000; | |
3525 | rd <<= 1; | |
3526 | if (C) | |
3527 | rd |= 1; | |
3528 | c = res; | |
3529 | } | |
3530 | else | |
3531 | { | |
3532 | res = rd & 1; | |
3533 | rd = ((unsigned int) rd) >> 1; | |
3534 | if (C) | |
3535 | rd |= 0x80000000; | |
3536 | c = res; | |
d1360fb0 V |
3537 | } |
3538 | ||
dc5c3759 MS |
3539 | v = 0; |
3540 | goto shift32; | |
d1360fb0 | 3541 | |
dc5c3759 MS |
3542 | case O (O_JMP, SN): |
3543 | case O (O_JMP, SL): | |
3544 | case O (O_JMP, SB): /* jmp */ | |
3545 | case O (O_JMP, SW): | |
9f70f8ec MS |
3546 | fetch (sd, &code->src, &pc); |
3547 | goto end; | |
d1360fb0 | 3548 | |
dc5c3759 MS |
3549 | case O (O_JSR, SN): |
3550 | case O (O_JSR, SL): | |
3551 | case O (O_JSR, SB): /* jsr, jump to subroutine */ | |
3552 | case O (O_JSR, SW): | |
9f70f8ec MS |
3553 | if (fetch (sd, &code->src, &pc)) |
3554 | goto end; | |
3555 | call: | |
3556 | tmp = h8_get_reg (sd, SP_REGNUM); | |
d1360fb0 | 3557 | |
59768597 | 3558 | if (h8300hmode && !h8300_normal_mode) |
9f70f8ec MS |
3559 | { |
3560 | tmp -= 4; | |
3561 | SET_MEMORY_L (tmp, code->next_pc); | |
3562 | } | |
3563 | else | |
3564 | { | |
3565 | tmp -= 2; | |
3566 | SET_MEMORY_W (tmp, code->next_pc); | |
3567 | } | |
3568 | h8_set_reg (sd, SP_REGNUM, tmp); | |
d1360fb0 | 3569 | |
9f70f8ec | 3570 | goto end; |
dc5c3759 MS |
3571 | |
3572 | case O (O_BSR, SW): | |
3573 | case O (O_BSR, SL): | |
3574 | case O (O_BSR, SB): /* bsr, branch to subroutine */ | |
3575 | if (fetch (sd, &code->src, &res)) | |
3576 | goto end; | |
3577 | pc = code->next_pc + res; | |
3578 | goto call; | |
3579 | ||
9f70f8ec MS |
3580 | case O (O_RTE, SN): /* rte, return from exception */ |
3581 | rte: | |
3582 | /* Pops exr and ccr before pc -- otherwise identical to rts. */ | |
3583 | tmp = h8_get_reg (sd, SP_REGNUM); | |
dc5c3759 | 3584 | |
9f70f8ec MS |
3585 | if (h8300smode) /* pop exr */ |
3586 | { | |
3587 | h8_set_exr (sd, GET_MEMORY_L (tmp)); | |
3588 | tmp += 4; | |
3589 | } | |
59768597 | 3590 | if (h8300hmode && !h8300_normal_mode) |
9f70f8ec MS |
3591 | { |
3592 | h8_set_ccr (sd, GET_MEMORY_L (tmp)); | |
3593 | tmp += 4; | |
3594 | pc = GET_MEMORY_L (tmp); | |
3595 | tmp += 4; | |
3596 | } | |
3597 | else | |
3598 | { | |
3599 | h8_set_ccr (sd, GET_MEMORY_W (tmp)); | |
3600 | tmp += 2; | |
3601 | pc = GET_MEMORY_W (tmp); | |
3602 | tmp += 2; | |
3603 | } | |
dc5c3759 | 3604 | |
9f70f8ec MS |
3605 | GETSR (sd); |
3606 | h8_set_reg (sd, SP_REGNUM, tmp); | |
3607 | goto end; | |
d1360fb0 | 3608 | |
9f70f8ec MS |
3609 | case O (O_RTS, SN): /* rts, return from subroutine */ |
3610 | rts: | |
3611 | tmp = h8_get_reg (sd, SP_REGNUM); | |
3612 | ||
59768597 | 3613 | if (h8300hmode && !h8300_normal_mode) |
9f70f8ec MS |
3614 | { |
3615 | pc = GET_MEMORY_L (tmp); | |
3616 | tmp += 4; | |
3617 | } | |
3618 | else | |
3619 | { | |
3620 | pc = GET_MEMORY_W (tmp); | |
3621 | tmp += 2; | |
3622 | } | |
3623 | ||
3624 | h8_set_reg (sd, SP_REGNUM, tmp); | |
3625 | goto end; | |
d1360fb0 | 3626 | |
dc5c3759 MS |
3627 | case O (O_ILL, SB): /* illegal */ |
3628 | sim_engine_set_run_state (sd, sim_stopped, SIGILL); | |
3629 | goto end; | |
3630 | ||
3631 | case O (O_SLEEP, SN): /* sleep */ | |
3632 | /* Check for magic numbers in r1 and r2. */ | |
3633 | if ((h8_get_reg (sd, R1_REGNUM) & 0xffff) == LIBC_EXIT_MAGIC1 && | |
3634 | (h8_get_reg (sd, R2_REGNUM) & 0xffff) == LIBC_EXIT_MAGIC2 && | |
3635 | SIM_WIFEXITED (h8_get_reg (sd, 0))) | |
3636 | { | |
3637 | /* This trap comes from _exit, not from gdb. */ | |
3638 | sim_engine_set_run_state (sd, sim_exited, | |
3639 | SIM_WEXITSTATUS (h8_get_reg (sd, 0))); | |
3640 | } | |
e22fef83 | 3641 | #if 0 |
f408565c MS |
3642 | /* Unfortunately this won't really work, because |
3643 | when we take a breakpoint trap, R0 has a "random", | |
3644 | user-defined value. Don't see any immediate solution. */ | |
f0861129 MS |
3645 | else if (SIM_WIFSTOPPED (h8_get_reg (sd, 0))) |
3646 | { | |
3647 | /* Pass the stop signal up to gdb. */ | |
3648 | sim_engine_set_run_state (sd, sim_stopped, | |
3649 | SIM_WSTOPSIG (h8_get_reg (sd, 0))); | |
3650 | } | |
e22fef83 | 3651 | #endif |
dc5c3759 MS |
3652 | else |
3653 | { | |
3654 | /* Treat it as a sigtrap. */ | |
3655 | sim_engine_set_run_state (sd, sim_stopped, SIGTRAP); | |
3656 | } | |
3657 | goto end; | |
bf174226 | 3658 | |
9f70f8ec MS |
3659 | case O (O_TRAPA, SB): /* trapa */ |
3660 | if (fetch (sd, &code->src, &res)) | |
59768597 SA |
3661 | goto end; /* res is vector number. */ |
3662 | ||
3663 | tmp = h8_get_reg (sd, SP_REGNUM); | |
3664 | if(h8300_normal_mode) | |
3665 | { | |
3666 | tmp -= 2; | |
3667 | SET_MEMORY_W (tmp, code->next_pc); | |
3668 | tmp -= 2; | |
3669 | SET_MEMORY_W (tmp, h8_get_ccr (sd)); | |
3670 | } | |
3671 | else | |
3672 | { | |
3673 | tmp -= 4; | |
3674 | SET_MEMORY_L (tmp, code->next_pc); | |
3675 | tmp -= 4; | |
3676 | SET_MEMORY_L (tmp, h8_get_ccr (sd)); | |
3677 | } | |
3678 | intMaskBit = 1; | |
3679 | BUILDSR (sd); | |
3680 | ||
9f70f8ec MS |
3681 | if (h8300smode) |
3682 | { | |
3683 | tmp -= 4; | |
3684 | SET_MEMORY_L (tmp, h8_get_exr (sd)); | |
3685 | } | |
3686 | ||
3687 | h8_set_reg (sd, SP_REGNUM, tmp); | |
3688 | ||
59768597 SA |
3689 | if(h8300_normal_mode) |
3690 | pc = GET_MEMORY_L (0x10 + res * 2); /* Vector addresses are 0x10,0x12,0x14 and 0x16 */ | |
3691 | else | |
3692 | pc = GET_MEMORY_L (0x20 + res * 4); | |
9f70f8ec MS |
3693 | goto end; |
3694 | ||
dc5c3759 MS |
3695 | case O (O_BPT, SN): |
3696 | sim_engine_set_run_state (sd, sim_stopped, SIGTRAP); | |
3697 | goto end; | |
bf174226 | 3698 | |
dc5c3759 MS |
3699 | case O (O_BSETEQ, SB): |
3700 | if (Z) | |
3701 | goto bset; | |
3702 | goto next; | |
bf174226 | 3703 | |
dc5c3759 MS |
3704 | case O (O_BSETNE, SB): |
3705 | if (!Z) | |
3706 | goto bset; | |
3707 | goto next; | |
bf174226 | 3708 | |
dc5c3759 MS |
3709 | case O (O_BCLREQ, SB): |
3710 | if (Z) | |
3711 | goto bclr; | |
3712 | goto next; | |
bf174226 | 3713 | |
dc5c3759 MS |
3714 | case O (O_BCLRNE, SB): |
3715 | if (!Z) | |
3716 | goto bclr; | |
3717 | goto next; | |
bf174226 | 3718 | |
dc5c3759 MS |
3719 | OBITOP (O_BNOT, 1, 1, ea ^= m); /* bnot */ |
3720 | OBITOP (O_BTST, 1, 0, nz = ea & m); /* btst */ | |
3721 | bset: | |
3722 | OBITOP (O_BSET, 1, 1, ea |= m); /* bset */ | |
3723 | bclr: | |
3724 | OBITOP (O_BCLR, 1, 1, ea &= ~m); /* bclr */ | |
3725 | OBITOP (O_BLD, 1, 0, c = ea & m); /* bld */ | |
3726 | OBITOP (O_BILD, 1, 0, c = !(ea & m)); /* bild */ | |
3727 | OBITOP (O_BST, 1, 1, ea &= ~m; | |
3728 | if (C) ea |= m); /* bst */ | |
3729 | OBITOP (O_BIST, 1, 1, ea &= ~m; | |
3730 | if (!C) ea |= m); /* bist */ | |
3731 | OBITOP (O_BSTZ, 1, 1, ea &= ~m; | |
3732 | if (Z) ea |= m); /* bstz */ | |
3733 | OBITOP (O_BISTZ, 1, 1, ea &= ~m; | |
3734 | if (!Z) ea |= m); /* bistz */ | |
3735 | OBITOP (O_BAND, 1, 0, c = (ea & m) && C); /* band */ | |
3736 | OBITOP (O_BIAND, 1, 0, c = !(ea & m) && C); /* biand */ | |
3737 | OBITOP (O_BOR, 1, 0, c = (ea & m) || C); /* bor */ | |
3738 | OBITOP (O_BIOR, 1, 0, c = !(ea & m) || C); /* bior */ | |
3739 | OBITOP (O_BXOR, 1, 0, c = ((ea & m) != 0)!= C); /* bxor */ | |
3740 | OBITOP (O_BIXOR, 1, 0, c = !(ea & m) != C); /* bixor */ | |
3741 | ||
3742 | case O (O_BFLD, SB): /* bfld */ | |
3743 | /* bitfield load */ | |
3744 | ea = 0; | |
3745 | if (fetch (sd, &code->src, &bit)) | |
3746 | goto end; | |
bf174226 | 3747 | |
dc5c3759 MS |
3748 | if (bit != 0) |
3749 | { | |
3750 | if (fetch (sd, &code->dst, &ea)) | |
3751 | goto end; | |
bf174226 | 3752 | |
dc5c3759 MS |
3753 | ea &= bit; |
3754 | while (!(bit & 1)) | |
3755 | { | |
3756 | ea >>= 1; | |
3757 | bit >>= 1; | |
3758 | } | |
3759 | } | |
3760 | if (store (sd, &code->op3, ea)) | |
3761 | goto end; | |
bf174226 | 3762 | |
c906108c SS |
3763 | goto next; |
3764 | ||
dc5c3759 MS |
3765 | case O(O_BFST, SB): /* bfst */ |
3766 | /* bitfield store */ | |
3767 | /* NOTE: the imm8 value is in dst, and the ea value | |
3768 | (which is actually the destination) is in op3. | |
3769 | It has to be that way, to avoid breaking the assembler. */ | |
bf174226 | 3770 | |
dc5c3759 MS |
3771 | if (fetch (sd, &code->dst, &bit)) /* imm8 */ |
3772 | goto end; | |
3773 | if (bit == 0) /* noop -- nothing to do. */ | |
3774 | goto next; | |
bf174226 | 3775 | |
dc5c3759 MS |
3776 | if (fetch (sd, &code->src, &rd)) /* reg8 src */ |
3777 | goto end; | |
bf174226 | 3778 | |
dc5c3759 MS |
3779 | if (fetch2 (sd, &code->op3, &ea)) /* ea dst */ |
3780 | goto end; | |
bf174226 | 3781 | |
dc5c3759 MS |
3782 | /* Left-shift the register data into position. */ |
3783 | for (tmp = bit; !(tmp & 1); tmp >>= 1) | |
3784 | rd <<= 1; | |
bf174226 | 3785 | |
dc5c3759 MS |
3786 | /* Combine it with the neighboring bits. */ |
3787 | ea = (ea & ~bit) | (rd & bit); | |
bf174226 | 3788 | |
dc5c3759 MS |
3789 | /* Put it back. */ |
3790 | if (store2 (sd, &code->op3, ea)) | |
3791 | goto end; | |
3792 | goto next; | |
3793 | ||
3794 | case O (O_CLRMAC, SN): /* clrmac */ | |
3795 | h8_set_mach (sd, 0); | |
3796 | h8_set_macl (sd, 0); | |
3797 | h8_set_macZ (sd, 1); | |
3798 | h8_set_macV (sd, 0); | |
3799 | h8_set_macN (sd, 0); | |
3800 | goto next; | |
3801 | ||
3802 | case O (O_STMAC, SL): /* stmac, 260 */ | |
3803 | switch (code->src.type) { | |
3804 | case X (OP_MACH, SL): | |
3805 | res = h8_get_mach (sd); | |
3806 | if (res & 0x200) /* sign extend */ | |
3807 | res |= 0xfffffc00; | |
3808 | break; | |
3809 | case X (OP_MACL, SL): | |
3810 | res = h8_get_macl (sd); | |
3811 | break; | |
3812 | default: goto illegal; | |
bf174226 | 3813 | } |
dc5c3759 MS |
3814 | nz = !h8_get_macZ (sd); |
3815 | n = h8_get_macN (sd); | |
3816 | v = h8_get_macV (sd); | |
3817 | ||
3818 | if (store (sd, &code->dst, res)) | |
3819 | goto end; | |
3820 | ||
bf174226 V |
3821 | goto next; |
3822 | ||
dc5c3759 MS |
3823 | case O (O_LDMAC, SL): /* ldmac, 179 */ |
3824 | if (fetch (sd, &code->src, &rd)) | |
3825 | goto end; | |
bf174226 | 3826 | |
dc5c3759 MS |
3827 | switch (code->dst.type) { |
3828 | case X (OP_MACH, SL): | |
3829 | rd &= 0x3ff; /* Truncate to 10 bits */ | |
3830 | h8_set_mach (sd, rd); | |
3831 | break; | |
3832 | case X (OP_MACL, SL): | |
3833 | h8_set_macl (sd, rd); | |
3834 | break; | |
3835 | default: goto illegal; | |
3836 | } | |
3837 | h8_set_macV (sd, 0); | |
3838 | goto next; | |
bf174226 | 3839 | |
dc5c3759 MS |
3840 | case O (O_MAC, SW): |
3841 | if (fetch (sd, &code->src, &rd) || | |
3842 | fetch (sd, &code->dst, &res)) | |
3843 | goto end; | |
bf174226 | 3844 | |
dc5c3759 MS |
3845 | /* Ye gods, this is non-portable! |
3846 | However, the existing mul/div code is similar. */ | |
3847 | res = SEXTSHORT (res) * SEXTSHORT (rd); | |
bf174226 | 3848 | |
dc5c3759 MS |
3849 | if (h8_get_macS (sd)) /* Saturating mode */ |
3850 | { | |
3851 | long long mac = h8_get_macl (sd); | |
bf174226 | 3852 | |
dc5c3759 MS |
3853 | if (mac & 0x80000000) /* sign extend */ |
3854 | mac |= 0xffffffff00000000LL; | |
bf174226 | 3855 | |
dc5c3759 MS |
3856 | mac += res; |
3857 | if (mac > 0x7fffffff || mac < 0xffffffff80000000LL) | |
3858 | h8_set_macV (sd, 1); | |
3859 | h8_set_macZ (sd, (mac == 0)); | |
3860 | h8_set_macN (sd, (mac < 0)); | |
3861 | h8_set_macl (sd, (int) mac); | |
3862 | } | |
3863 | else /* "Less Saturating" mode */ | |
3864 | { | |
3865 | long long mac = h8_get_mach (sd); | |
3866 | mac <<= 32; | |
3867 | mac += h8_get_macl (sd); | |
3868 | ||
3869 | if (mac & 0x20000000000LL) /* sign extend */ | |
3870 | mac |= 0xfffffc0000000000LL; | |
3871 | ||
3872 | mac += res; | |
3873 | if (mac > 0x1ffffffffffLL || | |
3874 | mac < (long long) 0xfffffe0000000000LL) | |
3875 | h8_set_macV (sd, 1); | |
3876 | h8_set_macZ (sd, (mac == 0)); | |
3877 | h8_set_macN (sd, (mac < 0)); | |
3878 | h8_set_macl (sd, (int) mac); | |
3879 | mac >>= 32; | |
3880 | h8_set_mach (sd, (int) (mac & 0x3ff)); | |
3881 | } | |
bf174226 V |
3882 | goto next; |
3883 | ||
dc5c3759 MS |
3884 | case O (O_MULS, SW): /* muls.w */ |
3885 | if (fetch (sd, &code->src, &ea) || | |
3886 | fetch (sd, &code->dst, &rd)) | |
3887 | goto end; | |
bf174226 | 3888 | |
dc5c3759 MS |
3889 | /* FIXME: is this the right place to be doing sign extend? */ |
3890 | if (OP_KIND (code->src.type) == OP_IMM && | |
3891 | (ea & 8) != 0) | |
3892 | ea |= 0xfff0; | |
3893 | else | |
3894 | ea = SEXTSHORT (ea); | |
bf174226 | 3895 | |
dc5c3759 MS |
3896 | res = SEXTSHORT (ea * SEXTSHORT (rd)); |
3897 | ||
3898 | n = res & 0x8000; | |
3899 | nz = res & 0xffff; | |
3900 | if (store (sd, &code->dst, res)) | |
3901 | goto end; | |
bf174226 | 3902 | |
bf174226 V |
3903 | goto next; |
3904 | ||
dc5c3759 MS |
3905 | case O (O_MULS, SL): /* muls.l */ |
3906 | if (fetch (sd, &code->src, &ea) || | |
3907 | fetch (sd, &code->dst, &rd)) | |
3908 | goto end; | |
bf174226 | 3909 | |
dc5c3759 MS |
3910 | /* FIXME: is this the right place to be doing sign extend? */ |
3911 | if (OP_KIND (code->src.type) == OP_IMM && | |
3912 | (ea & 8) != 0) | |
3913 | ea |= 0xfffffff0; | |
bf174226 | 3914 | |
dc5c3759 | 3915 | res = ea * rd; |
bf174226 | 3916 | |
dc5c3759 MS |
3917 | n = res & 0x80000000; |
3918 | nz = res & 0xffffffff; | |
3919 | if (store (sd, &code->dst, res)) | |
3920 | goto end; | |
bf174226 V |
3921 | goto next; |
3922 | ||
dc5c3759 MS |
3923 | case O (O_MULSU, SL): /* muls/u.l */ |
3924 | if (fetch (sd, &code->src, &ea) || | |
3925 | fetch (sd, &code->dst, &rd)) | |
3926 | goto end; | |
bf174226 | 3927 | |
dc5c3759 MS |
3928 | /* FIXME: is this the right place to be doing sign extend? */ |
3929 | if (OP_KIND (code->src.type) == OP_IMM && | |
3930 | (ea & 8) != 0) | |
3931 | ea |= 0xfffffff0; | |
bf174226 | 3932 | |
dc5c3759 MS |
3933 | /* Compute upper 32 bits of the 64-bit result. */ |
3934 | res = (((long long) ea) * ((long long) rd)) >> 32; | |
bf174226 | 3935 | |
dc5c3759 MS |
3936 | n = res & 0x80000000; |
3937 | nz = res & 0xffffffff; | |
3938 | if (store (sd, &code->dst, res)) | |
3939 | goto end; | |
3940 | goto next; | |
bf174226 | 3941 | |
dc5c3759 MS |
3942 | case O (O_MULU, SW): /* mulu.w */ |
3943 | if (fetch (sd, &code->src, &ea) || | |
3944 | fetch (sd, &code->dst, &rd)) | |
3945 | goto end; | |
bf174226 | 3946 | |
dc5c3759 MS |
3947 | res = UEXTSHORT ((UEXTSHORT (ea) * UEXTSHORT (rd))); |
3948 | ||
3949 | /* Don't set Z or N. */ | |
3950 | if (store (sd, &code->dst, res)) | |
3951 | goto end; | |
bf174226 | 3952 | |
bf174226 V |
3953 | goto next; |
3954 | ||
dc5c3759 MS |
3955 | case O (O_MULU, SL): /* mulu.l */ |
3956 | if (fetch (sd, &code->src, &ea) || | |
3957 | fetch (sd, &code->dst, &rd)) | |
3958 | goto end; | |
bf174226 | 3959 | |
dc5c3759 | 3960 | res = ea * rd; |
bf174226 | 3961 | |
dc5c3759 MS |
3962 | /* Don't set Z or N. */ |
3963 | if (store (sd, &code->dst, res)) | |
3964 | goto end; | |
bf174226 | 3965 | |
dc5c3759 | 3966 | goto next; |
bf174226 | 3967 | |
dc5c3759 MS |
3968 | case O (O_MULUU, SL): /* mulu/u.l */ |
3969 | if (fetch (sd, &code->src, &ea) || | |
3970 | fetch (sd, &code->dst, &rd)) | |
3971 | goto end; | |
bf174226 | 3972 | |
dc5c3759 MS |
3973 | /* Compute upper 32 bits of the 64-bit result. */ |
3974 | res = (((unsigned long long) (unsigned) ea) * | |
3975 | ((unsigned long long) (unsigned) rd)) >> 32; | |
bf174226 | 3976 | |
dc5c3759 MS |
3977 | /* Don't set Z or N. */ |
3978 | if (store (sd, &code->dst, res)) | |
3979 | goto end; | |
bf174226 | 3980 | |
dc5c3759 | 3981 | goto next; |
bf174226 | 3982 | |
dc5c3759 MS |
3983 | case O (O_MULXS, SB): /* mulxs.b */ |
3984 | if (fetch (sd, &code->src, &ea) || | |
3985 | fetch (sd, &code->dst, &rd)) | |
3986 | goto end; | |
bf174226 | 3987 | |
dc5c3759 MS |
3988 | /* FIXME: is this the right place to be doing sign extend? */ |
3989 | if (OP_KIND (code->src.type) == OP_IMM && | |
3990 | (ea & 8) != 0) | |
3991 | ea |= 0xfffffff0; | |
3992 | else | |
3993 | ea = SEXTCHAR (ea); | |
bf174226 | 3994 | |
dc5c3759 MS |
3995 | res = ea * SEXTCHAR (rd); |
3996 | ||
3997 | n = res & 0x8000; | |
3998 | nz = res & 0xffff; | |
3999 | if (store (sd, &code->dst, res)) | |
4000 | goto end; | |
bf174226 | 4001 | |
bf174226 | 4002 | goto next; |
bf174226 | 4003 | |
dc5c3759 MS |
4004 | case O (O_MULXS, SW): /* mulxs.w */ |
4005 | if (fetch (sd, &code->src, &ea) || | |
4006 | fetch (sd, &code->dst, &rd)) | |
c906108c SS |
4007 | goto end; |
4008 | ||
dc5c3759 MS |
4009 | /* FIXME: is this the right place to be doing sign extend? */ |
4010 | if (OP_KIND (code->src.type) == OP_IMM && | |
4011 | (ea & 8) != 0) | |
4012 | ea |= 0xfff0; | |
4013 | else | |
4014 | ea = SEXTSHORT (ea); | |
c906108c | 4015 | |
dc5c3759 | 4016 | res = ea * SEXTSHORT (rd & 0xffff); |
c906108c | 4017 | |
dc5c3759 MS |
4018 | n = res & 0x80000000; |
4019 | nz = res & 0xffffffff; | |
4020 | if (store (sd, &code->dst, res)) | |
4021 | goto end; | |
4022 | ||
4023 | goto next; | |
c906108c | 4024 | |
dc5c3759 MS |
4025 | case O (O_MULXU, SB): /* mulxu.b */ |
4026 | if (fetch (sd, &code->src, &ea) || | |
4027 | fetch (sd, &code->dst, &rd)) | |
c906108c | 4028 | goto end; |
c906108c | 4029 | |
dc5c3759 | 4030 | res = UEXTCHAR (ea) * UEXTCHAR (rd); |
c906108c | 4031 | |
dc5c3759 MS |
4032 | if (store (sd, &code->dst, res)) |
4033 | goto end; | |
c906108c | 4034 | |
dc5c3759 | 4035 | goto next; |
c906108c | 4036 | |
dc5c3759 MS |
4037 | case O (O_MULXU, SW): /* mulxu.w */ |
4038 | if (fetch (sd, &code->src, &ea) || | |
4039 | fetch (sd, &code->dst, &rd)) | |
c906108c | 4040 | goto end; |
c906108c | 4041 | |
dc5c3759 | 4042 | res = UEXTSHORT (ea) * UEXTSHORT (rd); |
c906108c | 4043 | |
dc5c3759 MS |
4044 | if (store (sd, &code->dst, res)) |
4045 | goto end; | |
4046 | ||
4047 | goto next; | |
c906108c | 4048 | |
9f70f8ec MS |
4049 | case O (O_TAS, SB): /* tas (test and set) */ |
4050 | if (!h8300sxmode) /* h8sx can use any register. */ | |
4051 | switch (code->src.reg) | |
4052 | { | |
4053 | case R0_REGNUM: | |
4054 | case R1_REGNUM: | |
4055 | case R4_REGNUM: | |
4056 | case R5_REGNUM: | |
4057 | break; | |
4058 | default: | |
4059 | goto illegal; | |
4060 | } | |
4061 | ||
dc5c3759 MS |
4062 | if (fetch (sd, &code->src, &res)) |
4063 | goto end; | |
4064 | if (store (sd, &code->src, res | 0x80)) | |
4065 | goto end; | |
4066 | ||
6147b1f6 | 4067 | goto just_flags_log8; |
c906108c | 4068 | |
dc5c3759 MS |
4069 | case O (O_DIVU, SW): /* divu.w */ |
4070 | if (fetch (sd, &code->src, &ea) || | |
4071 | fetch (sd, &code->dst, &rd)) | |
4072 | goto end; | |
c906108c | 4073 | |
dc5c3759 MS |
4074 | n = ea & 0x8000; |
4075 | nz = ea & 0xffff; | |
4076 | if (ea) | |
4077 | res = (unsigned) (UEXTSHORT (rd) / UEXTSHORT (ea)); | |
4078 | else | |
4079 | res = 0; | |
c906108c | 4080 | |
dc5c3759 MS |
4081 | if (store (sd, &code->dst, res)) |
4082 | goto end; | |
4083 | goto next; | |
c906108c | 4084 | |
dc5c3759 MS |
4085 | case O (O_DIVU, SL): /* divu.l */ |
4086 | if (fetch (sd, &code->src, &ea) || | |
4087 | fetch (sd, &code->dst, &rd)) | |
4088 | goto end; | |
4089 | ||
4090 | n = ea & 0x80000000; | |
4091 | nz = ea & 0xffffffff; | |
4092 | if (ea) | |
4093 | res = (unsigned) rd / ea; | |
4094 | else | |
4095 | res = 0; | |
4096 | ||
4097 | if (store (sd, &code->dst, res)) | |
4098 | goto end; | |
4099 | goto next; | |
4100 | ||
4101 | case O (O_DIVS, SW): /* divs.w */ | |
4102 | if (fetch (sd, &code->src, &ea) || | |
4103 | fetch (sd, &code->dst, &rd)) | |
4104 | goto end; | |
4105 | ||
4106 | /* FIXME: is this the right place to be doing sign extend? */ | |
4107 | if (OP_KIND (code->src.type) == OP_IMM && | |
4108 | (ea & 8) != 0) | |
4109 | ea |= 0xfffffff0; | |
4110 | ||
4111 | if (ea) | |
4112 | { | |
4113 | res = SEXTSHORT (rd) / SEXTSHORT (ea); | |
4114 | nz = 1; | |
4115 | } | |
4116 | else | |
4117 | { | |
4118 | res = 0; | |
4119 | nz = 0; | |
4120 | } | |
4121 | ||
4122 | n = res & 0x8000; | |
4123 | if (store (sd, &code->dst, res)) | |
4124 | goto end; | |
4125 | goto next; | |
4126 | ||
4127 | case O (O_DIVS, SL): /* divs.l */ | |
4128 | if (fetch (sd, &code->src, &ea) || | |
4129 | fetch (sd, &code->dst, &rd)) | |
4130 | goto end; | |
4131 | ||
4132 | /* FIXME: is this the right place to be doing sign extend? */ | |
4133 | if (OP_KIND (code->src.type) == OP_IMM && | |
4134 | (ea & 8) != 0) | |
4135 | ea |= 0xfffffff0; | |
4136 | ||
4137 | if (ea) | |
4138 | { | |
4139 | res = rd / ea; | |
4140 | nz = 1; | |
4141 | } | |
4142 | else | |
4143 | { | |
4144 | res = 0; | |
4145 | nz = 0; | |
4146 | } | |
4147 | ||
4148 | n = res & 0x80000000; | |
4149 | if (store (sd, &code->dst, res)) | |
4150 | goto end; | |
4151 | goto next; | |
4152 | ||
4153 | case O (O_DIVXU, SB): /* divxu.b */ | |
4154 | if (fetch (sd, &code->src, &ea) || | |
4155 | fetch (sd, &code->dst, &rd)) | |
4156 | goto end; | |
4157 | ||
4158 | rd = UEXTSHORT (rd); | |
4159 | ea = UEXTCHAR (ea); | |
4160 | ||
4161 | n = ea & 0x80; | |
4162 | nz = ea & 0xff; | |
4163 | if (ea) | |
4164 | { | |
4165 | tmp = (unsigned) rd % ea; | |
4166 | res = (unsigned) rd / ea; | |
4167 | } | |
4168 | else | |
4169 | { | |
4170 | tmp = 0; | |
4171 | res = 0; | |
4172 | } | |
4173 | ||
9f70f8ec | 4174 | if (store (sd, &code->dst, (res & 0xff) | (tmp << 8))) |
dc5c3759 MS |
4175 | goto end; |
4176 | goto next; | |
4177 | ||
4178 | case O (O_DIVXU, SW): /* divxu.w */ | |
4179 | if (fetch (sd, &code->src, &ea) || | |
4180 | fetch (sd, &code->dst, &rd)) | |
4181 | goto end; | |
4182 | ||
4183 | ea = UEXTSHORT (ea); | |
4184 | ||
4185 | n = ea & 0x8000; | |
4186 | nz = ea & 0xffff; | |
4187 | if (ea) | |
4188 | { | |
4189 | tmp = (unsigned) rd % ea; | |
4190 | res = (unsigned) rd / ea; | |
4191 | } | |
4192 | else | |
4193 | { | |
4194 | tmp = 0; | |
4195 | res = 0; | |
4196 | } | |
4197 | ||
4198 | if (store (sd, &code->dst, (res & 0xffff) | (tmp << 16))) | |
4199 | goto end; | |
4200 | goto next; | |
4201 | ||
4202 | case O (O_DIVXS, SB): /* divxs.b */ | |
4203 | if (fetch (sd, &code->src, &ea) || | |
4204 | fetch (sd, &code->dst, &rd)) | |
4205 | goto end; | |
4206 | ||
4207 | rd = SEXTSHORT (rd); | |
4208 | ||
4209 | /* FIXME: is this the right place to be doing sign extend? */ | |
4210 | if (OP_KIND (code->src.type) == OP_IMM && | |
4211 | (ea & 8) != 0) | |
4212 | ea |= 0xfffffff0; | |
4213 | else | |
4214 | ea = SEXTCHAR (ea); | |
4215 | ||
4216 | if (ea) | |
4217 | { | |
4218 | tmp = (int) rd % (int) ea; | |
4219 | res = (int) rd / (int) ea; | |
4220 | nz = 1; | |
4221 | } | |
4222 | else | |
4223 | { | |
4224 | tmp = 0; | |
4225 | res = 0; | |
4226 | nz = 0; | |
4227 | } | |
4228 | ||
4229 | n = res & 0x8000; | |
4230 | if (store (sd, &code->dst, (res & 0xff) | (tmp << 8))) | |
4231 | goto end; | |
4232 | goto next; | |
4233 | ||
4234 | case O (O_DIVXS, SW): /* divxs.w */ | |
4235 | if (fetch (sd, &code->src, &ea) || | |
4236 | fetch (sd, &code->dst, &rd)) | |
4237 | goto end; | |
4238 | ||
4239 | /* FIXME: is this the right place to be doing sign extend? */ | |
4240 | if (OP_KIND (code->src.type) == OP_IMM && | |
4241 | (ea & 8) != 0) | |
4242 | ea |= 0xfffffff0; | |
4243 | else | |
4244 | ea = SEXTSHORT (ea); | |
4245 | ||
4246 | if (ea) | |
4247 | { | |
4248 | tmp = (int) rd % (int) ea; | |
4249 | res = (int) rd / (int) ea; | |
4250 | nz = 1; | |
4251 | } | |
4252 | else | |
4253 | { | |
4254 | tmp = 0; | |
4255 | res = 0; | |
4256 | nz = 0; | |
4257 | } | |
4258 | ||
4259 | n = res & 0x80000000; | |
4260 | if (store (sd, &code->dst, (res & 0xffff) | (tmp << 16))) | |
4261 | goto end; | |
4262 | goto next; | |
4263 | ||
4264 | case O (O_EXTS, SW): /* exts.w, signed extend */ | |
4265 | if (fetch2 (sd, &code->dst, &rd)) | |
4266 | goto end; | |
c906108c | 4267 | ea = rd & 0x80 ? -256 : 0; |
dc5c3759 | 4268 | res = (rd & 0xff) + ea; |
c906108c | 4269 | goto log16; |
dc5c3759 MS |
4270 | |
4271 | case O (O_EXTS, SL): /* exts.l, signed extend */ | |
4272 | if (fetch2 (sd, &code->dst, &rd)) | |
4273 | goto end; | |
4274 | if (code->src.type == X (OP_IMM, SL)) | |
4275 | { | |
4276 | if (fetch (sd, &code->src, &ea)) | |
4277 | goto end; | |
4278 | ||
4279 | if (ea == 2) /* exts.l #2, nn */ | |
4280 | { | |
4281 | /* Sign-extend from 8-bit to 32-bit. */ | |
4282 | ea = rd & 0x80 ? -256 : 0; | |
4283 | res = (rd & 0xff) + ea; | |
4284 | goto log32; | |
4285 | } | |
4286 | } | |
4287 | /* Sign-extend from 16-bit to 32-bit. */ | |
c906108c | 4288 | ea = rd & 0x8000 ? -65536 : 0; |
dc5c3759 | 4289 | res = (rd & 0xffff) + ea; |
c906108c | 4290 | goto log32; |
dc5c3759 MS |
4291 | |
4292 | case O (O_EXTU, SW): /* extu.w, unsigned extend */ | |
4293 | if (fetch2 (sd, &code->dst, &rd)) | |
4294 | goto end; | |
c906108c | 4295 | ea = 0; |
dc5c3759 | 4296 | res = (rd & 0xff) + ea; |
c906108c | 4297 | goto log16; |
dc5c3759 MS |
4298 | |
4299 | case O (O_EXTU, SL): /* extu.l, unsigned extend */ | |
4300 | if (fetch2 (sd, &code->dst, &rd)) | |
4301 | goto end; | |
4302 | if (code->src.type == X (OP_IMM, SL)) | |
4303 | { | |
4304 | if (fetch (sd, &code->src, &ea)) | |
4305 | goto end; | |
4306 | ||
4307 | if (ea == 2) /* extu.l #2, nn */ | |
4308 | { | |
4309 | /* Zero-extend from 8-bit to 32-bit. */ | |
4310 | ea = 0; | |
4311 | res = (rd & 0xff) + ea; | |
4312 | goto log32; | |
4313 | } | |
4314 | } | |
4315 | /* Zero-extend from 16-bit to 32-bit. */ | |
c906108c | 4316 | ea = 0; |
dc5c3759 | 4317 | res = (rd & 0xffff) + ea; |
c906108c SS |
4318 | goto log32; |
4319 | ||
dc5c3759 | 4320 | case O (O_NOP, SN): /* nop */ |
c906108c SS |
4321 | goto next; |
4322 | ||
dc5c3759 | 4323 | case O (O_STM, SL): /* stm, store to memory */ |
c906108c SS |
4324 | { |
4325 | int nregs, firstreg, i; | |
4326 | ||
4327 | nregs = GET_MEMORY_B (pc + 1); | |
4328 | nregs >>= 4; | |
4329 | nregs &= 0xf; | |
dc5c3759 | 4330 | firstreg = code->src.reg; |
c906108c SS |
4331 | firstreg &= 0xf; |
4332 | for (i = firstreg; i <= firstreg + nregs; i++) | |
4333 | { | |
dc5c3759 MS |
4334 | h8_set_reg (sd, SP_REGNUM, h8_get_reg (sd, SP_REGNUM) - 4); |
4335 | SET_MEMORY_L (h8_get_reg (sd, SP_REGNUM), h8_get_reg (sd, i)); | |
c906108c SS |
4336 | } |
4337 | } | |
4338 | goto next; | |
4339 | ||
dc5c3759 | 4340 | case O (O_LDM, SL): /* ldm, load from memory */ |
9f70f8ec MS |
4341 | case O (O_RTEL, SN): /* rte/l, ldm plus rte */ |
4342 | case O (O_RTSL, SN): /* rts/l, ldm plus rts */ | |
c906108c SS |
4343 | { |
4344 | int nregs, firstreg, i; | |
4345 | ||
9f70f8ec MS |
4346 | nregs = ((GET_MEMORY_B (pc + 1) >> 4) & 0xf); |
4347 | firstreg = code->dst.reg & 0xf; | |
c906108c SS |
4348 | for (i = firstreg; i >= firstreg - nregs; i--) |
4349 | { | |
dc5c3759 MS |
4350 | h8_set_reg (sd, i, GET_MEMORY_L (h8_get_reg (sd, SP_REGNUM))); |
4351 | h8_set_reg (sd, SP_REGNUM, h8_get_reg (sd, SP_REGNUM) + 4); | |
c906108c SS |
4352 | } |
4353 | } | |
9f70f8ec MS |
4354 | switch (code->opcode) { |
4355 | case O (O_RTEL, SN): | |
4356 | goto rte; | |
4357 | case O (O_RTSL, SN): | |
4358 | goto rts; | |
4359 | case O (O_LDM, SL): | |
4360 | goto next; | |
4361 | default: | |
4362 | goto illegal; | |
4363 | } | |
c906108c | 4364 | |
b7f97e9c MS |
4365 | case O (O_DAA, SB): |
4366 | /* Decimal Adjust Addition. This is for BCD arithmetic. */ | |
9f70f8ec | 4367 | res = GET_B_REG (code->src.reg); /* FIXME fetch? */ |
dc5c3759 MS |
4368 | if (!c && (0 <= (res >> 4) && (res >> 4) <= 9) && |
4369 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) | |
b7f97e9c | 4370 | res = res; /* Value added == 0. */ |
dc5c3759 MS |
4371 | else if (!c && (0 <= (res >> 4) && (res >> 4) <= 8) && |
4372 | !h && (10 <= (res & 0xf) && (res & 0xf) <= 15)) | |
b7f97e9c | 4373 | res = res + 0x6; /* Value added == 6. */ |
dc5c3759 MS |
4374 | else if (!c && (0 <= (res >> 4) && (res >> 4) <= 9) && |
4375 | h && (0 <= (res & 0xf) && (res & 0xf) <= 3)) | |
b7f97e9c | 4376 | res = res + 0x6; /* Value added == 6. */ |
dc5c3759 MS |
4377 | else if (!c && (10 <= (res >> 4) && (res >> 4) <= 15) && |
4378 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) | |
4379 | res = res + 0x60; /* Value added == 60. */ | |
4380 | else if (!c && (9 <= (res >> 4) && (res >> 4) <= 15) && | |
4381 | !h && (10 <= (res & 0xf) && (res & 0xf) <= 15)) | |
4382 | res = res + 0x66; /* Value added == 66. */ | |
4383 | else if (!c && (10 <= (res >> 4) && (res >> 4) <= 15) && | |
4384 | h && (0 <= (res & 0xf) && (res & 0xf) <= 3)) | |
4385 | res = res + 0x66; /* Value added == 66. */ | |
4386 | else if ( c && (1 <= (res >> 4) && (res >> 4) <= 2) && | |
4387 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) | |
b7f97e9c | 4388 | res = res + 0x60; /* Value added == 60. */ |
dc5c3759 MS |
4389 | else if ( c && (1 <= (res >> 4) && (res >> 4) <= 2) && |
4390 | !h && (10 <= (res & 0xf) && (res & 0xf) <= 15)) | |
b7f97e9c | 4391 | res = res + 0x66; /* Value added == 66. */ |
dc5c3759 MS |
4392 | else if (c && (1 <= (res >> 4) && (res >> 4) <= 3) && |
4393 | h && (0 <= (res & 0xf) && (res & 0xf) <= 3)) | |
b7f97e9c | 4394 | res = res + 0x66; /* Value added == 66. */ |
b7f97e9c MS |
4395 | |
4396 | goto alu8; | |
4397 | ||
4398 | case O (O_DAS, SB): | |
4399 | /* Decimal Adjust Subtraction. This is for BCD arithmetic. */ | |
4400 | res = GET_B_REG (code->src.reg); /* FIXME fetch, fetch2... */ | |
dc5c3759 MS |
4401 | if (!c && (0 <= (res >> 4) && (res >> 4) <= 9) && |
4402 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) | |
b7f97e9c | 4403 | res = res; /* Value added == 0. */ |
dc5c3759 MS |
4404 | else if (!c && (0 <= (res >> 4) && (res >> 4) <= 8) && |
4405 | h && (6 <= (res & 0xf) && (res & 0xf) <= 15)) | |
b7f97e9c | 4406 | res = res + 0xfa; /* Value added == 0xfa. */ |
dc5c3759 MS |
4407 | else if ( c && (7 <= (res >> 4) && (res >> 4) <= 15) && |
4408 | !h && (0 <= (res & 0xf) && (res & 0xf) <= 9)) | |
b7f97e9c | 4409 | res = res + 0xa0; /* Value added == 0xa0. */ |
dc5c3759 MS |
4410 | else if (c && (6 <= (res >> 4) && (res >> 4) <= 15) && |
4411 | h && (6 <= (res & 0xf) && (res & 0xf) <= 15)) | |
b7f97e9c MS |
4412 | res = res + 0x9a; /* Value added == 0x9a. */ |
4413 | ||
4414 | goto alu8; | |
4415 | ||
c906108c | 4416 | default: |
d0fe2f7e | 4417 | illegal: |
dc5c3759 | 4418 | sim_engine_set_run_state (sd, sim_stopped, SIGILL); |
c906108c SS |
4419 | goto end; |
4420 | ||
4421 | } | |
dc5c3759 MS |
4422 | |
4423 | (*sim_callback->printf_filtered) (sim_callback, | |
4424 | "sim_resume: internal error.\n"); | |
4425 | sim_engine_set_run_state (sd, sim_stopped, SIGILL); | |
4426 | goto end; | |
c906108c SS |
4427 | |
4428 | setc: | |
dc5c3759 MS |
4429 | if (code->dst.type == X (OP_CCR, SB) || |
4430 | code->dst.type == X (OP_CCR, SW)) | |
c3f4437e | 4431 | { |
dc5c3759 | 4432 | h8_set_ccr (sd, res); |
9f70f8ec | 4433 | GETSR (sd); |
c3f4437e | 4434 | } |
dc5c3759 MS |
4435 | else if (h8300smode && |
4436 | (code->dst.type == X (OP_EXR, SB) || | |
4437 | code->dst.type == X (OP_EXR, SW))) | |
c3f4437e | 4438 | { |
dc5c3759 MS |
4439 | h8_set_exr (sd, res); |
4440 | if (h8300smode) /* Get exr. */ | |
4441 | { | |
4442 | trace = (h8_get_exr (sd) >> 7) & 1; | |
4443 | intMask = h8_get_exr (sd) & 7; | |
4444 | } | |
c3f4437e | 4445 | } |
fc974602 | 4446 | else |
c3f4437e | 4447 | goto illegal; |
fc974602 | 4448 | |
c906108c SS |
4449 | goto next; |
4450 | ||
4451 | condtrue: | |
4452 | /* When a branch works */ | |
dc5c3759 MS |
4453 | if (fetch (sd, &code->src, &res)) |
4454 | goto end; | |
4455 | if (res & 1) /* bad address */ | |
4456 | goto illegal; | |
4457 | pc = code->next_pc + res; | |
c906108c SS |
4458 | goto end; |
4459 | ||
4460 | /* Set the cond codes from res */ | |
4461 | bitop: | |
4462 | ||
4463 | /* Set the flags after an 8 bit inc/dec operation */ | |
4464 | just_flags_inc8: | |
4465 | n = res & 0x80; | |
4466 | nz = res & 0xff; | |
4467 | v = (rd & 0x7f) == 0x7f; | |
4468 | goto next; | |
4469 | ||
c906108c SS |
4470 | /* Set the flags after an 16 bit inc/dec operation */ |
4471 | just_flags_inc16: | |
4472 | n = res & 0x8000; | |
4473 | nz = res & 0xffff; | |
4474 | v = (rd & 0x7fff) == 0x7fff; | |
4475 | goto next; | |
4476 | ||
c906108c SS |
4477 | /* Set the flags after an 32 bit inc/dec operation */ |
4478 | just_flags_inc32: | |
4479 | n = res & 0x80000000; | |
4480 | nz = res & 0xffffffff; | |
4481 | v = (rd & 0x7fffffff) == 0x7fffffff; | |
4482 | goto next; | |
4483 | ||
c906108c SS |
4484 | shift8: |
4485 | /* Set flags after an 8 bit shift op, carry,overflow set in insn */ | |
4486 | n = (rd & 0x80); | |
4487 | nz = rd & 0xff; | |
dc5c3759 MS |
4488 | if (store2 (sd, &code->dst, rd)) |
4489 | goto end; | |
c906108c SS |
4490 | goto next; |
4491 | ||
4492 | shift16: | |
4493 | /* Set flags after an 16 bit shift op, carry,overflow set in insn */ | |
4494 | n = (rd & 0x8000); | |
4495 | nz = rd & 0xffff; | |
dc5c3759 MS |
4496 | if (store2 (sd, &code->dst, rd)) |
4497 | goto end; | |
c906108c SS |
4498 | goto next; |
4499 | ||
4500 | shift32: | |
4501 | /* Set flags after an 32 bit shift op, carry,overflow set in insn */ | |
4502 | n = (rd & 0x80000000); | |
4503 | nz = rd & 0xffffffff; | |
dc5c3759 MS |
4504 | if (store2 (sd, &code->dst, rd)) |
4505 | goto end; | |
c906108c SS |
4506 | goto next; |
4507 | ||
4508 | log32: | |
dc5c3759 MS |
4509 | if (store2 (sd, &code->dst, res)) |
4510 | goto end; | |
4511 | ||
c906108c SS |
4512 | just_flags_log32: |
4513 | /* flags after a 32bit logical operation */ | |
4514 | n = res & 0x80000000; | |
4515 | nz = res & 0xffffffff; | |
4516 | v = 0; | |
4517 | goto next; | |
4518 | ||
4519 | log16: | |
dc5c3759 MS |
4520 | if (store2 (sd, &code->dst, res)) |
4521 | goto end; | |
4522 | ||
c906108c SS |
4523 | just_flags_log16: |
4524 | /* flags after a 16bit logical operation */ | |
4525 | n = res & 0x8000; | |
4526 | nz = res & 0xffff; | |
4527 | v = 0; | |
4528 | goto next; | |
4529 | ||
c906108c | 4530 | log8: |
dc5c3759 MS |
4531 | if (store2 (sd, &code->dst, res)) |
4532 | goto end; | |
4533 | ||
c906108c SS |
4534 | just_flags_log8: |
4535 | n = res & 0x80; | |
4536 | nz = res & 0xff; | |
4537 | v = 0; | |
4538 | goto next; | |
4539 | ||
4540 | alu8: | |
dc5c3759 MS |
4541 | if (store2 (sd, &code->dst, res)) |
4542 | goto end; | |
4543 | ||
c906108c SS |
4544 | just_flags_alu8: |
4545 | n = res & 0x80; | |
4546 | nz = res & 0xff; | |
4547 | c = (res & 0x100); | |
4548 | switch (code->opcode / 4) | |
4549 | { | |
4550 | case O_ADD: | |
dc5c3759 | 4551 | case O_ADDX: |
c906108c SS |
4552 | v = ((rd & 0x80) == (ea & 0x80) |
4553 | && (rd & 0x80) != (res & 0x80)); | |
4554 | break; | |
4555 | case O_SUB: | |
dc5c3759 | 4556 | case O_SUBX: |
c906108c SS |
4557 | case O_CMP: |
4558 | v = ((rd & 0x80) != (-ea & 0x80) | |
4559 | && (rd & 0x80) != (res & 0x80)); | |
4560 | break; | |
4561 | case O_NEG: | |
4562 | v = (rd == 0x80); | |
4563 | break; | |
dc5c3759 MS |
4564 | case O_DAA: |
4565 | case O_DAS: | |
4566 | break; /* No effect on v flag. */ | |
c906108c SS |
4567 | } |
4568 | goto next; | |
4569 | ||
4570 | alu16: | |
dc5c3759 MS |
4571 | if (store2 (sd, &code->dst, res)) |
4572 | goto end; | |
4573 | ||
c906108c SS |
4574 | just_flags_alu16: |
4575 | n = res & 0x8000; | |
4576 | nz = res & 0xffff; | |
4577 | c = (res & 0x10000); | |
4578 | switch (code->opcode / 4) | |
4579 | { | |
4580 | case O_ADD: | |
dc5c3759 | 4581 | case O_ADDX: |
c906108c SS |
4582 | v = ((rd & 0x8000) == (ea & 0x8000) |
4583 | && (rd & 0x8000) != (res & 0x8000)); | |
4584 | break; | |
4585 | case O_SUB: | |
dc5c3759 | 4586 | case O_SUBX: |
c906108c SS |
4587 | case O_CMP: |
4588 | v = ((rd & 0x8000) != (-ea & 0x8000) | |
4589 | && (rd & 0x8000) != (res & 0x8000)); | |
4590 | break; | |
4591 | case O_NEG: | |
4592 | v = (rd == 0x8000); | |
4593 | break; | |
4594 | } | |
4595 | goto next; | |
4596 | ||
4597 | alu32: | |
dc5c3759 MS |
4598 | if (store2 (sd, &code->dst, res)) |
4599 | goto end; | |
4600 | ||
c906108c SS |
4601 | just_flags_alu32: |
4602 | n = res & 0x80000000; | |
4603 | nz = res & 0xffffffff; | |
4604 | switch (code->opcode / 4) | |
4605 | { | |
4606 | case O_ADD: | |
dc5c3759 | 4607 | case O_ADDX: |
c906108c SS |
4608 | v = ((rd & 0x80000000) == (ea & 0x80000000) |
4609 | && (rd & 0x80000000) != (res & 0x80000000)); | |
dc5c3759 MS |
4610 | c = ((unsigned) res < (unsigned) rd) || |
4611 | ((unsigned) res < (unsigned) ea); | |
c906108c SS |
4612 | break; |
4613 | case O_SUB: | |
dc5c3759 | 4614 | case O_SUBX: |
c906108c SS |
4615 | case O_CMP: |
4616 | v = ((rd & 0x80000000) != (-ea & 0x80000000) | |
4617 | && (rd & 0x80000000) != (res & 0x80000000)); | |
4618 | c = (unsigned) rd < (unsigned) -ea; | |
4619 | break; | |
4620 | case O_NEG: | |
4621 | v = (rd == 0x80000000); | |
4622 | c = res != 0; | |
4623 | break; | |
4624 | } | |
4625 | goto next; | |
4626 | ||
dc5c3759 MS |
4627 | next: |
4628 | if ((res = h8_get_delayed_branch (sd)) != 0) | |
4629 | { | |
4630 | pc = res; | |
4631 | h8_set_delayed_branch (sd, 0); | |
4632 | } | |
4633 | else | |
4634 | pc = code->next_pc; | |
c906108c SS |
4635 | |
4636 | end: | |
dc5c3759 | 4637 | |
c906108c SS |
4638 | if (--poll_count < 0) |
4639 | { | |
7a292a7a | 4640 | poll_count = POLL_QUIT_INTERVAL; |
c906108c SS |
4641 | if ((*sim_callback->poll_quit) != NULL |
4642 | && (*sim_callback->poll_quit) (sim_callback)) | |
dc5c3759 | 4643 | sim_engine_set_run_state (sd, sim_stopped, SIGINT); |
c906108c | 4644 | } |
dc5c3759 MS |
4645 | sim_engine_get_run_state (sd, &reason, &sigrc); |
4646 | } while (reason == sim_running); | |
c906108c | 4647 | |
dc5c3759 MS |
4648 | h8_set_ticks (sd, h8_get_ticks (sd) + get_now () - tick_start); |
4649 | h8_set_cycles (sd, h8_get_cycles (sd) + cycles); | |
4650 | h8_set_insts (sd, h8_get_insts (sd) + insts); | |
4651 | h8_set_pc (sd, pc); | |
4652 | BUILDSR (sd); | |
4653 | ||
4654 | if (h8300smode) | |
4655 | h8_set_exr (sd, (trace<<7) | intMask); | |
4656 | ||
4657 | h8_set_mask (sd, oldmask); | |
c906108c SS |
4658 | signal (SIGINT, prev); |
4659 | } | |
4660 | ||
4661 | int | |
a4f27e3e | 4662 | sim_trace (SIM_DESC sd) |
c906108c | 4663 | { |
2ea716f6 | 4664 | /* FIXME: Unfinished. */ |
dc5c3759 MS |
4665 | (*sim_callback->printf_filtered) (sim_callback, |
4666 | "sim_trace: trace not supported.\n"); | |
4667 | return 1; /* Done. */ | |
c906108c SS |
4668 | } |
4669 | ||
4670 | int | |
a4f27e3e | 4671 | sim_write (SIM_DESC sd, SIM_ADDR addr, unsigned char *buffer, int size) |
c906108c SS |
4672 | { |
4673 | int i; | |
4674 | ||
dc5c3759 | 4675 | init_pointers (sd); |
c906108c SS |
4676 | if (addr < 0) |
4677 | return 0; | |
4678 | for (i = 0; i < size; i++) | |
4679 | { | |
4680 | if (addr < memory_size) | |
4681 | { | |
dc5c3759 MS |
4682 | h8_set_memory (sd, addr + i, buffer[i]); |
4683 | h8_set_cache_idx (sd, addr + i, 0); | |
c906108c SS |
4684 | } |
4685 | else | |
dc5c3759 MS |
4686 | { |
4687 | h8_set_eightbit (sd, (addr + i) & 0xff, buffer[i]); | |
4688 | } | |
c906108c SS |
4689 | } |
4690 | return size; | |
4691 | } | |
4692 | ||
4693 | int | |
a4f27e3e | 4694 | sim_read (SIM_DESC sd, SIM_ADDR addr, unsigned char *buffer, int size) |
c906108c | 4695 | { |
dc5c3759 | 4696 | init_pointers (sd); |
c906108c SS |
4697 | if (addr < 0) |
4698 | return 0; | |
4699 | if (addr < memory_size) | |
dc5c3759 | 4700 | memcpy (buffer, h8_get_memory_buf (sd) + addr, size); |
c906108c | 4701 | else |
dc5c3759 | 4702 | memcpy (buffer, h8_get_eightbit_buf (sd) + (addr & 0xff), size); |
c906108c SS |
4703 | return size; |
4704 | } | |
4705 | ||
4706 | ||
c906108c | 4707 | int |
a4f27e3e | 4708 | sim_store_register (SIM_DESC sd, int rn, unsigned char *value, int length) |
c906108c SS |
4709 | { |
4710 | int longval; | |
4711 | int shortval; | |
4712 | int intval; | |
4713 | longval = (value[0] << 24) | (value[1] << 16) | (value[2] << 8) | value[3]; | |
4714 | shortval = (value[0] << 8) | (value[1]); | |
4715 | intval = h8300hmode ? longval : shortval; | |
4716 | ||
dc5c3759 | 4717 | init_pointers (sd); |
c906108c SS |
4718 | switch (rn) |
4719 | { | |
9f70f8ec | 4720 | case PC_REGNUM: |
59768597 SA |
4721 | if(h8300_normal_mode) |
4722 | h8_set_pc (sd, shortval); /* PC for Normal mode is 2 bytes */ | |
4723 | else | |
4724 | h8_set_pc (sd, intval); | |
9f70f8ec | 4725 | break; |
c906108c | 4726 | default: |
dc5c3759 MS |
4727 | (*sim_callback->printf_filtered) (sim_callback, |
4728 | "sim_store_register: bad regnum %d.\n", | |
4729 | rn); | |
c906108c SS |
4730 | case R0_REGNUM: |
4731 | case R1_REGNUM: | |
4732 | case R2_REGNUM: | |
4733 | case R3_REGNUM: | |
4734 | case R4_REGNUM: | |
4735 | case R5_REGNUM: | |
4736 | case R6_REGNUM: | |
4737 | case R7_REGNUM: | |
dc5c3759 | 4738 | h8_set_reg (sd, rn, intval); |
c906108c SS |
4739 | break; |
4740 | case CCR_REGNUM: | |
dc5c3759 | 4741 | h8_set_ccr (sd, intval); |
c906108c | 4742 | break; |
fc974602 | 4743 | case EXR_REGNUM: |
dc5c3759 | 4744 | h8_set_exr (sd, intval); |
fc974602 | 4745 | break; |
173b1c98 MS |
4746 | case SBR_REGNUM: |
4747 | h8_set_sbr (sd, intval); | |
4748 | break; | |
4749 | case VBR_REGNUM: | |
4750 | h8_set_vbr (sd, intval); | |
4751 | break; | |
4752 | case MACH_REGNUM: | |
4753 | h8_set_mach (sd, intval); | |
4754 | break; | |
4755 | case MACL_REGNUM: | |
4756 | h8_set_macl (sd, intval); | |
4757 | break; | |
c906108c | 4758 | case CYCLE_REGNUM: |
dc5c3759 | 4759 | h8_set_cycles (sd, longval); |
c906108c | 4760 | break; |
9f70f8ec | 4761 | |
c906108c | 4762 | case INST_REGNUM: |
dc5c3759 | 4763 | h8_set_insts (sd, longval); |
c906108c | 4764 | break; |
9f70f8ec | 4765 | |
c906108c | 4766 | case TICK_REGNUM: |
dc5c3759 | 4767 | h8_set_ticks (sd, longval); |
c906108c SS |
4768 | break; |
4769 | } | |
4770 | return -1; | |
4771 | } | |
4772 | ||
4773 | int | |
a4f27e3e | 4774 | sim_fetch_register (SIM_DESC sd, int rn, unsigned char *buf, int length) |
c906108c SS |
4775 | { |
4776 | int v; | |
4777 | int longreg = 0; | |
4778 | ||
dc5c3759 | 4779 | init_pointers (sd); |
c906108c | 4780 | |
d0fe2f7e | 4781 | if (!h8300smode && rn >= EXR_REGNUM) |
c3f4437e | 4782 | rn++; |
c906108c SS |
4783 | switch (rn) |
4784 | { | |
4785 | default: | |
dc5c3759 MS |
4786 | (*sim_callback->printf_filtered) (sim_callback, |
4787 | "sim_fetch_register: bad regnum %d.\n", | |
4788 | rn); | |
4789 | v = 0; | |
4790 | break; | |
3b02cf92 | 4791 | case CCR_REGNUM: |
dc5c3759 | 4792 | v = h8_get_ccr (sd); |
c906108c | 4793 | break; |
fc974602 | 4794 | case EXR_REGNUM: |
dc5c3759 | 4795 | v = h8_get_exr (sd); |
fc974602 | 4796 | break; |
3b02cf92 | 4797 | case PC_REGNUM: |
dc5c3759 | 4798 | v = h8_get_pc (sd); |
c906108c | 4799 | break; |
173b1c98 MS |
4800 | case SBR_REGNUM: |
4801 | v = h8_get_sbr (sd); | |
4802 | break; | |
4803 | case VBR_REGNUM: | |
4804 | v = h8_get_vbr (sd); | |
4805 | break; | |
4806 | case MACH_REGNUM: | |
4807 | v = h8_get_mach (sd); | |
4808 | break; | |
4809 | case MACL_REGNUM: | |
4810 | v = h8_get_macl (sd); | |
4811 | break; | |
c906108c SS |
4812 | case R0_REGNUM: |
4813 | case R1_REGNUM: | |
4814 | case R2_REGNUM: | |
4815 | case R3_REGNUM: | |
4816 | case R4_REGNUM: | |
4817 | case R5_REGNUM: | |
4818 | case R6_REGNUM: | |
4819 | case R7_REGNUM: | |
dc5c3759 | 4820 | v = h8_get_reg (sd, rn); |
c906108c | 4821 | break; |
3b02cf92 | 4822 | case CYCLE_REGNUM: |
dc5c3759 | 4823 | v = h8_get_cycles (sd); |
c906108c SS |
4824 | longreg = 1; |
4825 | break; | |
3b02cf92 | 4826 | case TICK_REGNUM: |
dc5c3759 | 4827 | v = h8_get_ticks (sd); |
c906108c SS |
4828 | longreg = 1; |
4829 | break; | |
3b02cf92 | 4830 | case INST_REGNUM: |
dc5c3759 | 4831 | v = h8_get_insts (sd); |
c906108c SS |
4832 | longreg = 1; |
4833 | break; | |
4834 | } | |
59768597 SA |
4835 | /* In Normal mode PC is 2 byte, but other registers are 4 byte */ |
4836 | if ((h8300hmode || longreg) && !(rn == PC_REGNUM && h8300_normal_mode)) | |
c906108c SS |
4837 | { |
4838 | buf[0] = v >> 24; | |
4839 | buf[1] = v >> 16; | |
4840 | buf[2] = v >> 8; | |
4841 | buf[3] = v >> 0; | |
4842 | } | |
4843 | else | |
4844 | { | |
4845 | buf[0] = v >> 8; | |
4846 | buf[1] = v; | |
4847 | } | |
4848 | return -1; | |
4849 | } | |
4850 | ||
4851 | void | |
a4f27e3e | 4852 | sim_stop_reason (SIM_DESC sd, enum sim_stop *reason, int *sigrc) |
c906108c | 4853 | { |
dc5c3759 | 4854 | sim_engine_get_run_state (sd, reason, sigrc); |
c906108c SS |
4855 | } |
4856 | ||
4857 | /* FIXME: Rename to sim_set_mem_size. */ | |
4858 | ||
4859 | void | |
a4f27e3e | 4860 | sim_size (int n) |
c906108c SS |
4861 | { |
4862 | /* Memory size is fixed. */ | |
4863 | } | |
4864 | ||
dc5c3759 MS |
4865 | static void |
4866 | set_simcache_size (SIM_DESC sd, int n) | |
c906108c | 4867 | { |
dc5c3759 MS |
4868 | if (sd->sim_cache) |
4869 | free (sd->sim_cache); | |
c906108c SS |
4870 | if (n < 2) |
4871 | n = 2; | |
dc5c3759 MS |
4872 | sd->sim_cache = (decoded_inst *) malloc (sizeof (decoded_inst) * n); |
4873 | memset (sd->sim_cache, 0, sizeof (decoded_inst) * n); | |
4874 | sd->sim_cache_size = n; | |
c906108c SS |
4875 | } |
4876 | ||
4877 | ||
4878 | void | |
a4f27e3e | 4879 | sim_info (SIM_DESC sd, int verbose) |
c906108c | 4880 | { |
dc5c3759 MS |
4881 | double timetaken = (double) h8_get_ticks (sd) / (double) now_persec (); |
4882 | double virttime = h8_get_cycles (sd) / 10.0e6; | |
c906108c SS |
4883 | |
4884 | (*sim_callback->printf_filtered) (sim_callback, | |
4885 | "\n\n#instructions executed %10d\n", | |
dc5c3759 | 4886 | h8_get_insts (sd)); |
c906108c SS |
4887 | (*sim_callback->printf_filtered) (sim_callback, |
4888 | "#cycles (v approximate) %10d\n", | |
dc5c3759 | 4889 | h8_get_cycles (sd)); |
c906108c SS |
4890 | (*sim_callback->printf_filtered) (sim_callback, |
4891 | "#real time taken %10.4f\n", | |
4892 | timetaken); | |
4893 | (*sim_callback->printf_filtered) (sim_callback, | |
e8c1a4e7 | 4894 | "#virtual time taken %10.4f\n", |
c906108c SS |
4895 | virttime); |
4896 | if (timetaken != 0.0) | |
4897 | (*sim_callback->printf_filtered) (sim_callback, | |
4898 | "#simulation ratio %10.4f\n", | |
4899 | virttime / timetaken); | |
4900 | (*sim_callback->printf_filtered) (sim_callback, | |
4901 | "#compiles %10d\n", | |
dc5c3759 | 4902 | h8_get_compiles (sd)); |
c906108c SS |
4903 | (*sim_callback->printf_filtered) (sim_callback, |
4904 | "#cache size %10d\n", | |
dc5c3759 | 4905 | sd->sim_cache_size); |
c906108c SS |
4906 | |
4907 | #ifdef ADEBUG | |
4908 | /* This to be conditional on `what' (aka `verbose'), | |
4909 | however it was never passed as non-zero. */ | |
4910 | if (1) | |
4911 | { | |
4912 | int i; | |
4913 | for (i = 0; i < O_LAST; i++) | |
4914 | { | |
dc5c3759 MS |
4915 | if (h8_get_stats (sd, i)) |
4916 | (*sim_callback->printf_filtered) (sim_callback, "%d: %d\n", | |
4917 | i, h8_get_stats (sd, i)); | |
c906108c SS |
4918 | } |
4919 | } | |
4920 | #endif | |
4921 | } | |
4922 | ||
2ea716f6 KH |
4923 | /* Indicate whether the cpu is an H8/300 or H8/300H. |
4924 | FLAG is non-zero for the H8/300H. */ | |
c906108c SS |
4925 | |
4926 | void | |
27ebfdf4 | 4927 | set_h8300h (unsigned long machine) |
c906108c SS |
4928 | { |
4929 | /* FIXME: Much of the code in sim_load can be moved to sim_open. | |
4930 | This function being replaced by a sim_open:ARGV configuration | |
2ea716f6 | 4931 | option. */ |
dc5c3759 | 4932 | |
454d0511 DD |
4933 | h8300hmode = h8300smode = h8300sxmode = h8300_normal_mode = 0; |
4934 | ||
9f70f8ec | 4935 | if (machine == bfd_mach_h8300sx || machine == bfd_mach_h8300sxn) |
27ebfdf4 MS |
4936 | h8300sxmode = 1; |
4937 | ||
4938 | if (machine == bfd_mach_h8300s || machine == bfd_mach_h8300sn || h8300sxmode) | |
4939 | h8300smode = 1; | |
4940 | ||
4941 | if (machine == bfd_mach_h8300h || machine == bfd_mach_h8300hn || h8300smode) | |
4942 | h8300hmode = 1; | |
59768597 SA |
4943 | |
4944 | if(machine == bfd_mach_h8300hn || machine == bfd_mach_h8300sn || machine == bfd_mach_h8300sxn) | |
4945 | h8300_normal_mode = 1; | |
dc5c3759 MS |
4946 | } |
4947 | ||
4948 | /* Cover function of sim_state_free to free the cpu buffers as well. */ | |
4949 | ||
4950 | static void | |
4951 | free_state (SIM_DESC sd) | |
4952 | { | |
4953 | if (STATE_MODULES (sd) != NULL) | |
4954 | sim_module_uninstall (sd); | |
4955 | ||
4956 | /* Fixme: free buffers in _sim_cpu. */ | |
4957 | sim_state_free (sd); | |
c906108c SS |
4958 | } |
4959 | ||
4960 | SIM_DESC | |
a4f27e3e | 4961 | sim_open (SIM_OPEN_KIND kind, |
dc5c3759 | 4962 | struct host_callback_struct *callback, |
6b4a8935 | 4963 | struct bfd *abfd, |
a4f27e3e | 4964 | char **argv) |
c906108c | 4965 | { |
dc5c3759 MS |
4966 | SIM_DESC sd; |
4967 | sim_cpu *cpu; | |
4968 | ||
4969 | sd = sim_state_alloc (kind, callback); | |
4970 | sd->cpu = sim_cpu_alloc (sd, 0); | |
4971 | cpu = STATE_CPU (sd, 0); | |
4972 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); | |
4973 | sim_state_initialize (sd, cpu); | |
4974 | /* sim_cpu object is new, so some initialization is needed. */ | |
4975 | init_pointers_needed = 1; | |
4976 | ||
4977 | /* For compatibility (FIXME: is this right?). */ | |
4978 | current_alignment = NONSTRICT_ALIGNMENT; | |
4979 | current_target_byte_order = BIG_ENDIAN; | |
4980 | ||
4981 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) | |
4982 | { | |
4983 | free_state (sd); | |
4984 | return 0; | |
4985 | } | |
4986 | ||
4987 | /* getopt will print the error message so we just have to exit if | |
4988 | this fails. FIXME: Hmmm... in the case of gdb we need getopt | |
4989 | to call print_filtered. */ | |
4990 | if (sim_parse_args (sd, argv) != SIM_RC_OK) | |
4991 | { | |
4992 | /* Uninstall the modules to avoid memory leaks, | |
4993 | file descriptor leaks, etc. */ | |
4994 | free_state (sd); | |
4995 | return 0; | |
4996 | } | |
4997 | ||
4998 | /* Check for/establish the a reference program image. */ | |
4999 | if (sim_analyze_program (sd, | |
5000 | (STATE_PROG_ARGV (sd) != NULL | |
5001 | ? *STATE_PROG_ARGV (sd) | |
5002 | : NULL), abfd) != SIM_RC_OK) | |
5003 | { | |
5004 | free_state (sd); | |
5005 | return 0; | |
5006 | } | |
5007 | ||
5008 | /* Establish any remaining configuration options. */ | |
5009 | if (sim_config (sd) != SIM_RC_OK) | |
5010 | { | |
5011 | free_state (sd); | |
5012 | return 0; | |
5013 | } | |
5014 | ||
5015 | if (sim_post_argv_init (sd) != SIM_RC_OK) | |
5016 | { | |
5017 | /* Uninstall the modules to avoid memory leaks, | |
5018 | file descriptor leaks, etc. */ | |
5019 | free_state (sd); | |
5020 | return 0; | |
5021 | } | |
5022 | ||
5023 | /* sim_hw_configure (sd); */ | |
5024 | ||
2ea716f6 | 5025 | /* FIXME: Much of the code in sim_load can be moved here. */ |
c906108c SS |
5026 | |
5027 | sim_kind = kind; | |
5028 | myname = argv[0]; | |
dc5c3759 MS |
5029 | sim_callback = callback; |
5030 | return sd; | |
c906108c SS |
5031 | } |
5032 | ||
5033 | void | |
a4f27e3e | 5034 | sim_close (SIM_DESC sd, int quitting) |
c906108c | 5035 | { |
2ea716f6 | 5036 | /* Nothing to do. */ |
c906108c SS |
5037 | } |
5038 | ||
5039 | /* Called by gdb to load a program into memory. */ | |
5040 | ||
5041 | SIM_RC | |
a4f27e3e | 5042 | sim_load (SIM_DESC sd, char *prog, bfd *abfd, int from_tty) |
c906108c SS |
5043 | { |
5044 | bfd *prog_bfd; | |
5045 | ||
2ea716f6 KH |
5046 | /* FIXME: The code below that sets a specific variant of the H8/300 |
5047 | being simulated should be moved to sim_open(). */ | |
c906108c | 5048 | |
2ea716f6 | 5049 | /* See if the file is for the H8/300 or H8/300H. */ |
c906108c SS |
5050 | /* ??? This may not be the most efficient way. The z8k simulator |
5051 | does this via a different mechanism (INIT_EXTRA_SYMTAB_INFO). */ | |
5052 | if (abfd != NULL) | |
5053 | prog_bfd = abfd; | |
5054 | else | |
3d29fdb4 | 5055 | prog_bfd = bfd_openr (prog, NULL); |
c906108c SS |
5056 | if (prog_bfd != NULL) |
5057 | { | |
5058 | /* Set the cpu type. We ignore failure from bfd_check_format | |
5059 | and bfd_openr as sim_load_file checks too. */ | |
de9b1892 | 5060 | if (bfd_check_format (prog_bfd, bfd_object)) |
c906108c | 5061 | { |
27ebfdf4 | 5062 | set_h8300h (bfd_get_mach (prog_bfd)); |
c906108c SS |
5063 | } |
5064 | } | |
5065 | ||
5066 | /* If we're using gdb attached to the simulator, then we have to | |
5067 | reallocate memory for the simulator. | |
5068 | ||
5069 | When gdb first starts, it calls fetch_registers (among other | |
5070 | functions), which in turn calls init_pointers, which allocates | |
5071 | simulator memory. | |
5072 | ||
5073 | The problem is when we do that, we don't know whether we're | |
2ea716f6 | 5074 | debugging an H8/300 or H8/300H program. |
c906108c SS |
5075 | |
5076 | This is the first point at which we can make that determination, | |
5077 | so we just reallocate memory now; this will also allow us to handle | |
2ea716f6 | 5078 | switching between H8/300 and H8/300H programs without exiting |
c906108c | 5079 | gdb. */ |
a8cdafbd | 5080 | |
59768597 | 5081 | if (h8300smode && !h8300_normal_mode) |
a8cdafbd | 5082 | memory_size = H8300S_MSIZE; |
59768597 | 5083 | else if (h8300hmode && !h8300_normal_mode) |
c906108c SS |
5084 | memory_size = H8300H_MSIZE; |
5085 | else | |
5086 | memory_size = H8300_MSIZE; | |
5087 | ||
dc5c3759 MS |
5088 | if (h8_get_memory_buf (sd)) |
5089 | free (h8_get_memory_buf (sd)); | |
5090 | if (h8_get_cache_idx_buf (sd)) | |
5091 | free (h8_get_cache_idx_buf (sd)); | |
5092 | if (h8_get_eightbit_buf (sd)) | |
5093 | free (h8_get_eightbit_buf (sd)); | |
c906108c | 5094 | |
dc5c3759 MS |
5095 | h8_set_memory_buf (sd, (unsigned char *) |
5096 | calloc (sizeof (char), memory_size)); | |
5097 | h8_set_cache_idx_buf (sd, (unsigned short *) | |
5098 | calloc (sizeof (short), memory_size)); | |
5099 | h8_set_eightbit_buf (sd, (unsigned char *) calloc (sizeof (char), 256)); | |
c906108c | 5100 | |
2ea716f6 | 5101 | /* `msize' must be a power of two. */ |
c906108c | 5102 | if ((memory_size & (memory_size - 1)) != 0) |
dc5c3759 MS |
5103 | { |
5104 | (*sim_callback->printf_filtered) (sim_callback, | |
5105 | "sim_load: bad memory size.\n"); | |
5106 | return SIM_RC_FAIL; | |
5107 | } | |
5108 | h8_set_mask (sd, memory_size - 1); | |
c906108c SS |
5109 | |
5110 | if (sim_load_file (sd, myname, sim_callback, prog, prog_bfd, | |
5111 | sim_kind == SIM_OPEN_DEBUG, | |
5112 | 0, sim_write) | |
5113 | == NULL) | |
5114 | { | |
5115 | /* Close the bfd if we opened it. */ | |
5116 | if (abfd == NULL && prog_bfd != NULL) | |
5117 | bfd_close (prog_bfd); | |
5118 | return SIM_RC_FAIL; | |
5119 | } | |
5120 | ||
5121 | /* Close the bfd if we opened it. */ | |
5122 | if (abfd == NULL && prog_bfd != NULL) | |
5123 | bfd_close (prog_bfd); | |
5124 | return SIM_RC_OK; | |
5125 | } | |
5126 | ||
5127 | SIM_RC | |
6b4a8935 | 5128 | sim_create_inferior (SIM_DESC sd, struct bfd *abfd, char **argv, char **env) |
c906108c | 5129 | { |
d1360fb0 V |
5130 | int i = 0; |
5131 | int len_arg = 0; | |
5132 | int no_of_args = 0; | |
dc5c3759 | 5133 | |
c906108c | 5134 | if (abfd != NULL) |
dc5c3759 | 5135 | h8_set_pc (sd, bfd_get_start_address (abfd)); |
c906108c | 5136 | else |
dc5c3759 | 5137 | h8_set_pc (sd, 0); |
d1360fb0 V |
5138 | |
5139 | /* Command Line support. */ | |
5140 | if (argv != NULL) | |
5141 | { | |
5142 | /* Counting the no. of commandline arguments. */ | |
5143 | for (no_of_args = 0; argv[no_of_args] != NULL; no_of_args++) | |
5144 | continue; | |
5145 | ||
5146 | /* Allocating memory for the argv pointers. */ | |
dc5c3759 MS |
5147 | h8_set_command_line (sd, (char **) malloc ((sizeof (char *)) |
5148 | * (no_of_args + 1))); | |
d1360fb0 V |
5149 | |
5150 | for (i = 0; i < no_of_args; i++) | |
5151 | { | |
d1360fb0 | 5152 | /* Copying the argument string. */ |
dc5c3759 | 5153 | h8_set_cmdline_arg (sd, i, (char *) strdup (argv[i])); |
d1360fb0 | 5154 | } |
dc5c3759 | 5155 | h8_set_cmdline_arg (sd, i, NULL); |
d1360fb0 V |
5156 | } |
5157 | ||
c906108c SS |
5158 | return SIM_RC_OK; |
5159 | } | |
5160 | ||
5161 | void | |
a4f27e3e | 5162 | sim_do_command (SIM_DESC sd, char *cmd) |
c906108c SS |
5163 | { |
5164 | (*sim_callback->printf_filtered) (sim_callback, | |
5165 | "This simulator does not accept any commands.\n"); | |
5166 | } | |
5167 | ||
5168 | void | |
a4f27e3e | 5169 | sim_set_callbacks (struct host_callback_struct *ptr) |
c906108c SS |
5170 | { |
5171 | sim_callback = ptr; | |
5172 | } |