Commit | Line | Data |
---|---|---|
fdd6fa61 | 1 | /* Simulator for the moxie processor |
ecd75fc8 | 2 | Copyright (C) 2008-2014 Free Software Foundation, Inc. |
fdd6fa61 AG |
3 | Contributed by Anthony Green |
4 | ||
5 | This file is part of GDB, the GNU debugger. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 3 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ | |
19 | ||
a6c2b87e MF |
20 | #include "config.h" |
21 | #include <fcntl.h> | |
fdd6fa61 AG |
22 | #include <signal.h> |
23 | #include <stdlib.h> | |
24 | #include "sysdep.h" | |
25 | #include <sys/times.h> | |
26 | #include <sys/param.h> | |
27 | #include <netinet/in.h> /* for byte ordering macros */ | |
28 | #include "bfd.h" | |
29 | #include "gdb/callback.h" | |
30 | #include "libiberty.h" | |
31 | #include "gdb/remote-sim.h" | |
32 | ||
5c27d164 AG |
33 | #include "sim-main.h" |
34 | #include "sim-base.h" | |
35 | ||
fdd6fa61 AG |
36 | typedef int word; |
37 | typedef unsigned int uword; | |
38 | ||
39 | host_callback * callback; | |
40 | ||
41 | FILE *tracefile; | |
42 | ||
86566200 AG |
43 | /* Extract the signed 10-bit offset from a 16-bit branch |
44 | instruction. */ | |
45 | #define INST2OFFSET(o) ((((signed short)((o & ((1<<10)-1))<<6))>>6)<<1) | |
46 | ||
5c27d164 AG |
47 | #define EXTRACT_WORD(addr) \ |
48 | ((sim_core_read_aligned_1 (scpu, cia, read_map, addr) << 24) \ | |
49 | + (sim_core_read_aligned_1 (scpu, cia, read_map, addr+1) << 16) \ | |
50 | + (sim_core_read_aligned_1 (scpu, cia, read_map, addr+2) << 8) \ | |
51 | + (sim_core_read_aligned_1 (scpu, cia, read_map, addr+3))) | |
fdd6fa61 AG |
52 | |
53 | unsigned long | |
54 | moxie_extract_unsigned_integer (addr, len) | |
55 | unsigned char * addr; | |
56 | int len; | |
57 | { | |
58 | unsigned long retval; | |
59 | unsigned char * p; | |
60 | unsigned char * startaddr = (unsigned char *)addr; | |
61 | unsigned char * endaddr = startaddr + len; | |
62 | ||
63 | if (len > (int) sizeof (unsigned long)) | |
64 | printf ("That operation is not available on integers of more than %d bytes.", | |
65 | sizeof (unsigned long)); | |
66 | ||
67 | /* Start at the most significant end of the integer, and work towards | |
68 | the least significant. */ | |
69 | retval = 0; | |
70 | ||
71 | for (p = endaddr; p > startaddr;) | |
72 | retval = (retval << 8) | * -- p; | |
73 | ||
74 | return retval; | |
75 | } | |
76 | ||
77 | void | |
78 | moxie_store_unsigned_integer (addr, len, val) | |
79 | unsigned char * addr; | |
80 | int len; | |
81 | unsigned long val; | |
82 | { | |
83 | unsigned char * p; | |
84 | unsigned char * startaddr = (unsigned char *)addr; | |
85 | unsigned char * endaddr = startaddr + len; | |
86 | ||
87 | for (p = endaddr; p > startaddr;) | |
88 | { | |
89 | * -- p = val & 0xff; | |
90 | val >>= 8; | |
91 | } | |
92 | } | |
93 | ||
94 | /* moxie register names. */ | |
95 | static const char *reg_names[16] = | |
96 | { "$fp", "$sp", "$r0", "$r1", "$r2", "$r3", "$r4", "$r5", | |
97 | "$r6", "$r7", "$r8", "$r9", "$r10", "$r11", "$r12", "$r13" }; | |
98 | ||
99 | /* The machine state. | |
100 | ||
101 | This state is maintained in host byte order. The fetch/store | |
102 | register functions must translate between host byte order and the | |
103 | target processor byte order. Keeping this data in target byte | |
104 | order simplifies the register read/write functions. Keeping this | |
105 | data in native order improves the performance of the simulator. | |
106 | Simulation speed is deemed more important. */ | |
107 | ||
108 | #define NUM_MOXIE_REGS 17 /* Including PC */ | |
109 | #define NUM_MOXIE_SREGS 256 /* The special registers */ | |
110 | #define PC_REGNO 16 | |
111 | ||
112 | /* The ordering of the moxie_regset structure is matched in the | |
113 | gdb/config/moxie/tm-moxie.h file in the REGISTER_NAMES macro. */ | |
114 | struct moxie_regset | |
115 | { | |
116 | word regs[NUM_MOXIE_REGS + 1]; /* primary registers */ | |
117 | word sregs[256]; /* special registers */ | |
118 | word cc; /* the condition code reg */ | |
119 | int exception; | |
fdd6fa61 AG |
120 | unsigned long long insts; /* instruction counter */ |
121 | }; | |
122 | ||
123 | #define CC_GT 1<<0 | |
124 | #define CC_LT 1<<1 | |
125 | #define CC_EQ 1<<2 | |
126 | #define CC_GTU 1<<3 | |
127 | #define CC_LTU 1<<4 | |
128 | ||
129 | union | |
130 | { | |
131 | struct moxie_regset asregs; | |
132 | word asints [1]; /* but accessed larger... */ | |
133 | } cpu; | |
134 | ||
135 | static char *myname; | |
136 | static SIM_OPEN_KIND sim_kind; | |
137 | static int issue_messages = 0; | |
138 | ||
fdd6fa61 | 139 | void |
5c27d164 | 140 | sim_size (int s) |
fdd6fa61 | 141 | { |
fdd6fa61 AG |
142 | } |
143 | ||
fdd6fa61 AG |
144 | static void |
145 | set_initial_gprs () | |
146 | { | |
147 | int i; | |
148 | long space; | |
fdd6fa61 | 149 | |
fdd6fa61 AG |
150 | /* Set up machine just out of reset. */ |
151 | cpu.asregs.regs[PC_REGNO] = 0; | |
152 | ||
fdd6fa61 AG |
153 | /* Clean out the register contents. */ |
154 | for (i = 0; i < NUM_MOXIE_REGS; i++) | |
155 | cpu.asregs.regs[i] = 0; | |
156 | for (i = 0; i < NUM_MOXIE_SREGS; i++) | |
157 | cpu.asregs.sregs[i] = 0; | |
158 | } | |
159 | ||
fdd6fa61 AG |
160 | /* Write a 1 byte value to memory. */ |
161 | ||
162 | static void INLINE | |
5c27d164 | 163 | wbat (sim_cpu *scpu, word pc, word x, word v) |
fdd6fa61 | 164 | { |
5c27d164 AG |
165 | address_word cia = CIA_GET (scpu); |
166 | ||
167 | sim_core_write_aligned_1 (scpu, cia, write_map, x, v); | |
fdd6fa61 AG |
168 | } |
169 | ||
170 | /* Write a 2 byte value to memory. */ | |
171 | ||
172 | static void INLINE | |
5c27d164 | 173 | wsat (sim_cpu *scpu, word pc, word x, word v) |
fdd6fa61 | 174 | { |
5c27d164 AG |
175 | address_word cia = CIA_GET (scpu); |
176 | ||
177 | sim_core_write_aligned_2 (scpu, cia, write_map, x, v); | |
fdd6fa61 AG |
178 | } |
179 | ||
180 | /* Write a 4 byte value to memory. */ | |
181 | ||
182 | static void INLINE | |
5c27d164 | 183 | wlat (sim_cpu *scpu, word pc, word x, word v) |
fdd6fa61 | 184 | { |
5c27d164 AG |
185 | address_word cia = CIA_GET (scpu); |
186 | ||
187 | sim_core_write_aligned_4 (scpu, cia, write_map, x, v); | |
fdd6fa61 AG |
188 | } |
189 | ||
190 | /* Read 2 bytes from memory. */ | |
191 | ||
192 | static int INLINE | |
5c27d164 | 193 | rsat (sim_cpu *scpu, word pc, word x) |
fdd6fa61 | 194 | { |
5c27d164 AG |
195 | address_word cia = CIA_GET (scpu); |
196 | ||
197 | return (sim_core_read_aligned_2 (scpu, cia, read_map, x)); | |
fdd6fa61 AG |
198 | } |
199 | ||
200 | /* Read 1 byte from memory. */ | |
201 | ||
202 | static int INLINE | |
5c27d164 | 203 | rbat (sim_cpu *scpu, word pc, word x) |
fdd6fa61 | 204 | { |
5c27d164 AG |
205 | address_word cia = CIA_GET (scpu); |
206 | ||
207 | return (sim_core_read_aligned_1 (scpu, cia, read_map, x)); | |
fdd6fa61 AG |
208 | } |
209 | ||
210 | /* Read 4 bytes from memory. */ | |
211 | ||
212 | static int INLINE | |
5c27d164 | 213 | rlat (sim_cpu *scpu, word pc, word x) |
fdd6fa61 | 214 | { |
5c27d164 AG |
215 | address_word cia = CIA_GET (scpu); |
216 | ||
217 | return (sim_core_read_aligned_4 (scpu, cia, read_map, x)); | |
fdd6fa61 AG |
218 | } |
219 | ||
220 | #define CHECK_FLAG(T,H) if (tflags & T) { hflags |= H; tflags ^= T; } | |
221 | ||
222 | unsigned int | |
223 | convert_target_flags (unsigned int tflags) | |
224 | { | |
225 | unsigned int hflags = 0x0; | |
226 | ||
227 | CHECK_FLAG(0x0001, O_WRONLY); | |
228 | CHECK_FLAG(0x0002, O_RDWR); | |
229 | CHECK_FLAG(0x0008, O_APPEND); | |
230 | CHECK_FLAG(0x0200, O_CREAT); | |
231 | CHECK_FLAG(0x0400, O_TRUNC); | |
232 | CHECK_FLAG(0x0800, O_EXCL); | |
233 | CHECK_FLAG(0x2000, O_SYNC); | |
234 | ||
235 | if (tflags != 0x0) | |
236 | fprintf (stderr, | |
237 | "Simulator Error: problem converting target open flags for host. 0x%x\n", | |
238 | tflags); | |
239 | ||
240 | return hflags; | |
241 | } | |
242 | ||
243 | #define TRACE(str) if (tracing) fprintf(tracefile,"0x%08x, %s, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x, 0x%x\n", opc, str, cpu.asregs.regs[0], cpu.asregs.regs[1], cpu.asregs.regs[2], cpu.asregs.regs[3], cpu.asregs.regs[4], cpu.asregs.regs[5], cpu.asregs.regs[6], cpu.asregs.regs[7], cpu.asregs.regs[8], cpu.asregs.regs[9], cpu.asregs.regs[10], cpu.asregs.regs[11], cpu.asregs.regs[12], cpu.asregs.regs[13], cpu.asregs.regs[14], cpu.asregs.regs[15]); | |
244 | ||
245 | static int tracing = 0; | |
246 | ||
247 | void | |
248 | sim_resume (sd, step, siggnal) | |
249 | SIM_DESC sd; | |
250 | int step, siggnal; | |
251 | { | |
252 | word pc, opc; | |
253 | unsigned long long insts; | |
254 | unsigned short inst; | |
5c27d164 AG |
255 | sim_cpu *scpu = STATE_CPU (sd, 0); /* FIXME */ |
256 | address_word cia = CIA_GET (scpu); | |
fdd6fa61 | 257 | |
fdd6fa61 AG |
258 | cpu.asregs.exception = step ? SIGTRAP: 0; |
259 | pc = cpu.asregs.regs[PC_REGNO]; | |
260 | insts = cpu.asregs.insts; | |
fdd6fa61 AG |
261 | |
262 | /* Run instructions here. */ | |
263 | do | |
264 | { | |
265 | opc = pc; | |
266 | ||
267 | /* Fetch the instruction at pc. */ | |
5c27d164 AG |
268 | inst = (sim_core_read_aligned_1 (scpu, cia, read_map, pc) << 8) |
269 | + sim_core_read_aligned_1 (scpu, cia, read_map, pc+1); | |
fdd6fa61 AG |
270 | |
271 | /* Decode instruction. */ | |
272 | if (inst & (1 << 15)) | |
273 | { | |
274 | if (inst & (1 << 14)) | |
275 | { | |
276 | /* This is a Form 3 instruction. */ | |
86566200 AG |
277 | int opcode = (inst >> 10 & 0xf); |
278 | ||
279 | switch (opcode) | |
280 | { | |
281 | case 0x00: /* beq */ | |
282 | { | |
283 | TRACE("beq"); | |
284 | if (cpu.asregs.cc & CC_EQ) | |
78ca4e81 | 285 | pc += INST2OFFSET(inst); |
86566200 AG |
286 | } |
287 | break; | |
288 | case 0x01: /* bne */ | |
289 | { | |
290 | TRACE("bne"); | |
291 | if (! (cpu.asregs.cc & CC_EQ)) | |
78ca4e81 | 292 | pc += INST2OFFSET(inst); |
86566200 AG |
293 | } |
294 | break; | |
295 | case 0x02: /* blt */ | |
296 | { | |
297 | TRACE("blt"); | |
298 | if (cpu.asregs.cc & CC_LT) | |
78ca4e81 | 299 | pc += INST2OFFSET(inst); |
86566200 AG |
300 | } break; |
301 | case 0x03: /* bgt */ | |
302 | { | |
303 | TRACE("bgt"); | |
304 | if (cpu.asregs.cc & CC_GT) | |
78ca4e81 | 305 | pc += INST2OFFSET(inst); |
86566200 AG |
306 | } |
307 | break; | |
308 | case 0x04: /* bltu */ | |
309 | { | |
310 | TRACE("bltu"); | |
311 | if (cpu.asregs.cc & CC_LTU) | |
78ca4e81 | 312 | pc += INST2OFFSET(inst); |
86566200 AG |
313 | } |
314 | break; | |
315 | case 0x05: /* bgtu */ | |
316 | { | |
317 | TRACE("bgtu"); | |
318 | if (cpu.asregs.cc & CC_GTU) | |
78ca4e81 | 319 | pc += INST2OFFSET(inst); |
86566200 AG |
320 | } |
321 | break; | |
322 | case 0x06: /* bge */ | |
323 | { | |
324 | TRACE("bge"); | |
325 | if (cpu.asregs.cc & (CC_GT | CC_EQ)) | |
78ca4e81 | 326 | pc += INST2OFFSET(inst); |
86566200 AG |
327 | } |
328 | break; | |
329 | case 0x07: /* ble */ | |
330 | { | |
331 | TRACE("ble"); | |
332 | if (cpu.asregs.cc & (CC_LT | CC_EQ)) | |
78ca4e81 | 333 | pc += INST2OFFSET(inst); |
86566200 AG |
334 | } |
335 | break; | |
336 | case 0x08: /* bgeu */ | |
337 | { | |
338 | TRACE("bgeu"); | |
339 | if (cpu.asregs.cc & (CC_GTU | CC_EQ)) | |
78ca4e81 | 340 | pc += INST2OFFSET(inst); |
86566200 AG |
341 | } |
342 | break; | |
343 | case 0x09: /* bleu */ | |
344 | { | |
345 | TRACE("bleu"); | |
346 | if (cpu.asregs.cc & (CC_LTU | CC_EQ)) | |
78ca4e81 | 347 | pc += INST2OFFSET(inst); |
86566200 AG |
348 | } |
349 | break; | |
350 | default: | |
351 | { | |
352 | TRACE("SIGILL3"); | |
353 | cpu.asregs.exception = SIGILL; | |
354 | break; | |
355 | } | |
356 | } | |
fdd6fa61 AG |
357 | } |
358 | else | |
359 | { | |
360 | /* This is a Form 2 instruction. */ | |
361 | int opcode = (inst >> 12 & 0x3); | |
362 | switch (opcode) | |
363 | { | |
364 | case 0x00: /* inc */ | |
365 | { | |
366 | int a = (inst >> 8) & 0xf; | |
367 | unsigned av = cpu.asregs.regs[a]; | |
368 | unsigned v = (inst & 0xff); | |
369 | TRACE("inc"); | |
370 | cpu.asregs.regs[a] = av + v; | |
371 | } | |
372 | break; | |
373 | case 0x01: /* dec */ | |
374 | { | |
375 | int a = (inst >> 8) & 0xf; | |
376 | unsigned av = cpu.asregs.regs[a]; | |
377 | unsigned v = (inst & 0xff); | |
378 | TRACE("dec"); | |
379 | cpu.asregs.regs[a] = av - v; | |
380 | } | |
381 | break; | |
382 | case 0x02: /* gsr */ | |
383 | { | |
384 | int a = (inst >> 8) & 0xf; | |
385 | unsigned v = (inst & 0xff); | |
386 | TRACE("gsr"); | |
387 | cpu.asregs.regs[a] = cpu.asregs.sregs[v]; | |
388 | } | |
77176dfc | 389 | break; |
fdd6fa61 AG |
390 | case 0x03: /* ssr */ |
391 | { | |
392 | int a = (inst >> 8) & 0xf; | |
393 | unsigned v = (inst & 0xff); | |
394 | TRACE("ssr"); | |
395 | cpu.asregs.sregs[v] = cpu.asregs.regs[a]; | |
396 | } | |
77176dfc | 397 | break; |
fdd6fa61 AG |
398 | default: |
399 | TRACE("SIGILL2"); | |
400 | cpu.asregs.exception = SIGILL; | |
401 | break; | |
402 | } | |
403 | } | |
404 | } | |
405 | else | |
406 | { | |
407 | /* This is a Form 1 instruction. */ | |
408 | int opcode = inst >> 8; | |
409 | switch (opcode) | |
410 | { | |
32d49b7b AG |
411 | case 0x00: /* bad */ |
412 | opc = opcode; | |
413 | TRACE("SIGILL0"); | |
414 | cpu.asregs.exception = SIGILL; | |
fdd6fa61 AG |
415 | break; |
416 | case 0x01: /* ldi.l (immediate) */ | |
417 | { | |
418 | int reg = (inst >> 4) & 0xf; | |
419 | TRACE("ldi.l"); | |
5c27d164 | 420 | unsigned int val = EXTRACT_WORD(pc+2); |
fdd6fa61 AG |
421 | cpu.asregs.regs[reg] = val; |
422 | pc += 4; | |
423 | } | |
424 | break; | |
425 | case 0x02: /* mov (register-to-register) */ | |
426 | { | |
427 | int dest = (inst >> 4) & 0xf; | |
428 | int src = (inst ) & 0xf; | |
429 | TRACE("mov"); | |
430 | cpu.asregs.regs[dest] = cpu.asregs.regs[src]; | |
431 | } | |
432 | break; | |
433 | case 0x03: /* jsra */ | |
434 | { | |
5c27d164 | 435 | unsigned int fn = EXTRACT_WORD(pc+2); |
fdd6fa61 AG |
436 | unsigned int sp = cpu.asregs.regs[1]; |
437 | TRACE("jsra"); | |
438 | /* Save a slot for the static chain. */ | |
439 | sp -= 4; | |
440 | ||
441 | /* Push the return address. */ | |
442 | sp -= 4; | |
5c27d164 | 443 | wlat (scpu, opc, sp, pc + 6); |
fdd6fa61 AG |
444 | |
445 | /* Push the current frame pointer. */ | |
446 | sp -= 4; | |
5c27d164 | 447 | wlat (scpu, opc, sp, cpu.asregs.regs[0]); |
fdd6fa61 AG |
448 | |
449 | /* Uncache the stack pointer and set the pc and $fp. */ | |
450 | cpu.asregs.regs[1] = sp; | |
451 | cpu.asregs.regs[0] = sp; | |
452 | pc = fn - 2; | |
453 | } | |
454 | break; | |
455 | case 0x04: /* ret */ | |
456 | { | |
457 | unsigned int sp = cpu.asregs.regs[0]; | |
458 | ||
459 | TRACE("ret"); | |
460 | ||
461 | /* Pop the frame pointer. */ | |
5c27d164 | 462 | cpu.asregs.regs[0] = rlat (scpu, opc, sp); |
fdd6fa61 AG |
463 | sp += 4; |
464 | ||
465 | /* Pop the return address. */ | |
5c27d164 | 466 | pc = rlat (scpu, opc, sp) - 2; |
fdd6fa61 AG |
467 | sp += 4; |
468 | ||
469 | /* Skip over the static chain slot. */ | |
470 | sp += 4; | |
471 | ||
472 | /* Uncache the stack pointer. */ | |
473 | cpu.asregs.regs[1] = sp; | |
474 | } | |
475 | break; | |
476 | case 0x05: /* add.l */ | |
477 | { | |
478 | int a = (inst >> 4) & 0xf; | |
479 | int b = inst & 0xf; | |
480 | unsigned av = cpu.asregs.regs[a]; | |
481 | unsigned bv = cpu.asregs.regs[b]; | |
482 | TRACE("add.l"); | |
483 | cpu.asregs.regs[a] = av + bv; | |
484 | } | |
485 | break; | |
486 | case 0x06: /* push */ | |
487 | { | |
488 | int a = (inst >> 4) & 0xf; | |
489 | int b = inst & 0xf; | |
490 | int sp = cpu.asregs.regs[a] - 4; | |
491 | TRACE("push"); | |
5c27d164 | 492 | wlat (scpu, opc, sp, cpu.asregs.regs[b]); |
fdd6fa61 AG |
493 | cpu.asregs.regs[a] = sp; |
494 | } | |
495 | break; | |
496 | case 0x07: /* pop */ | |
497 | { | |
498 | int a = (inst >> 4) & 0xf; | |
499 | int b = inst & 0xf; | |
500 | int sp = cpu.asregs.regs[a]; | |
501 | TRACE("pop"); | |
5c27d164 | 502 | cpu.asregs.regs[b] = rlat (scpu, opc, sp); |
fdd6fa61 AG |
503 | cpu.asregs.regs[a] = sp + 4; |
504 | } | |
505 | break; | |
506 | case 0x08: /* lda.l */ | |
507 | { | |
508 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 509 | unsigned int addr = EXTRACT_WORD(pc+2); |
fdd6fa61 | 510 | TRACE("lda.l"); |
5c27d164 | 511 | cpu.asregs.regs[reg] = rlat (scpu, opc, addr); |
fdd6fa61 AG |
512 | pc += 4; |
513 | } | |
514 | break; | |
515 | case 0x09: /* sta.l */ | |
516 | { | |
517 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 518 | unsigned int addr = EXTRACT_WORD(pc+2); |
fdd6fa61 | 519 | TRACE("sta.l"); |
5c27d164 | 520 | wlat (scpu, opc, addr, cpu.asregs.regs[reg]); |
fdd6fa61 AG |
521 | pc += 4; |
522 | } | |
523 | break; | |
524 | case 0x0a: /* ld.l (register indirect) */ | |
525 | { | |
526 | int src = inst & 0xf; | |
527 | int dest = (inst >> 4) & 0xf; | |
528 | int xv; | |
529 | TRACE("ld.l"); | |
530 | xv = cpu.asregs.regs[src]; | |
5c27d164 | 531 | cpu.asregs.regs[dest] = rlat (scpu, opc, xv); |
fdd6fa61 AG |
532 | } |
533 | break; | |
534 | case 0x0b: /* st.l */ | |
535 | { | |
536 | int dest = (inst >> 4) & 0xf; | |
537 | int val = inst & 0xf; | |
538 | TRACE("st.l"); | |
5c27d164 | 539 | wlat (scpu, opc, cpu.asregs.regs[dest], cpu.asregs.regs[val]); |
fdd6fa61 AG |
540 | } |
541 | break; | |
542 | case 0x0c: /* ldo.l */ | |
543 | { | |
5c27d164 | 544 | unsigned int addr = EXTRACT_WORD(pc+2); |
fdd6fa61 AG |
545 | int a = (inst >> 4) & 0xf; |
546 | int b = inst & 0xf; | |
547 | TRACE("ldo.l"); | |
548 | addr += cpu.asregs.regs[b]; | |
5c27d164 | 549 | cpu.asregs.regs[a] = rlat (scpu, opc, addr); |
fdd6fa61 AG |
550 | pc += 4; |
551 | } | |
552 | break; | |
553 | case 0x0d: /* sto.l */ | |
554 | { | |
5c27d164 | 555 | unsigned int addr = EXTRACT_WORD(pc+2); |
fdd6fa61 AG |
556 | int a = (inst >> 4) & 0xf; |
557 | int b = inst & 0xf; | |
558 | TRACE("sto.l"); | |
559 | addr += cpu.asregs.regs[a]; | |
5c27d164 | 560 | wlat (scpu, opc, addr, cpu.asregs.regs[b]); |
fdd6fa61 AG |
561 | pc += 4; |
562 | } | |
563 | break; | |
564 | case 0x0e: /* cmp */ | |
565 | { | |
566 | int a = (inst >> 4) & 0xf; | |
567 | int b = inst & 0xf; | |
568 | int cc = 0; | |
569 | int va = cpu.asregs.regs[a]; | |
570 | int vb = cpu.asregs.regs[b]; | |
571 | ||
572 | TRACE("cmp"); | |
573 | ||
574 | if (va == vb) | |
575 | cc = CC_EQ; | |
576 | else | |
577 | { | |
578 | cc |= (va < vb ? CC_LT : 0); | |
579 | cc |= (va > vb ? CC_GT : 0); | |
580 | cc |= ((unsigned int) va < (unsigned int) vb ? CC_LTU : 0); | |
581 | cc |= ((unsigned int) va > (unsigned int) vb ? CC_GTU : 0); | |
582 | } | |
583 | ||
584 | cpu.asregs.cc = cc; | |
585 | } | |
586 | break; | |
32d49b7b AG |
587 | case 0x0f: /* nop */ |
588 | break; | |
048ea174 AG |
589 | case 0x10: /* sex.b */ |
590 | { | |
591 | int a = (inst >> 4) & 0xf; | |
592 | int b = inst & 0xf; | |
593 | signed char bv = cpu.asregs.regs[b]; | |
594 | TRACE("sex.b"); | |
595 | cpu.asregs.regs[a] = (int) bv; | |
596 | } | |
597 | break; | |
598 | case 0x11: /* sex.s */ | |
599 | { | |
600 | int a = (inst >> 4) & 0xf; | |
601 | int b = inst & 0xf; | |
602 | signed short bv = cpu.asregs.regs[b]; | |
603 | TRACE("sex.s"); | |
604 | cpu.asregs.regs[a] = (int) bv; | |
605 | } | |
606 | break; | |
c784b115 AG |
607 | case 0x12: /* zex.b */ |
608 | { | |
609 | int a = (inst >> 4) & 0xf; | |
610 | int b = inst & 0xf; | |
611 | signed char bv = cpu.asregs.regs[b]; | |
612 | TRACE("zex.b"); | |
613 | cpu.asregs.regs[a] = (int) bv & 0xff; | |
614 | } | |
615 | break; | |
616 | case 0x13: /* zex.s */ | |
617 | { | |
618 | int a = (inst >> 4) & 0xf; | |
619 | int b = inst & 0xf; | |
620 | signed short bv = cpu.asregs.regs[b]; | |
621 | TRACE("zex.s"); | |
622 | cpu.asregs.regs[a] = (int) bv & 0xffff; | |
623 | } | |
624 | break; | |
32d49b7b AG |
625 | case 0x14: /* bad */ |
626 | case 0x15: /* bad */ | |
627 | case 0x16: /* bad */ | |
628 | case 0x17: /* bad */ | |
629 | case 0x18: /* bad */ | |
fdd6fa61 | 630 | { |
86566200 AG |
631 | opc = opcode; |
632 | TRACE("SIGILL0"); | |
633 | cpu.asregs.exception = SIGILL; | |
634 | break; | |
fdd6fa61 | 635 | } |
fdd6fa61 AG |
636 | case 0x19: /* jsr */ |
637 | { | |
638 | unsigned int fn = cpu.asregs.regs[(inst >> 4) & 0xf]; | |
639 | unsigned int sp = cpu.asregs.regs[1]; | |
640 | ||
641 | TRACE("jsr"); | |
642 | ||
643 | /* Save a slot for the static chain. */ | |
644 | sp -= 4; | |
645 | ||
646 | /* Push the return address. */ | |
647 | sp -= 4; | |
5c27d164 | 648 | wlat (scpu, opc, sp, pc + 2); |
fdd6fa61 AG |
649 | |
650 | /* Push the current frame pointer. */ | |
651 | sp -= 4; | |
5c27d164 | 652 | wlat (scpu, opc, sp, cpu.asregs.regs[0]); |
fdd6fa61 AG |
653 | |
654 | /* Uncache the stack pointer and set the fp & pc. */ | |
655 | cpu.asregs.regs[1] = sp; | |
656 | cpu.asregs.regs[0] = sp; | |
657 | pc = fn - 2; | |
658 | } | |
659 | break; | |
660 | case 0x1a: /* jmpa */ | |
661 | { | |
5c27d164 | 662 | unsigned int tgt = EXTRACT_WORD(pc+2); |
fdd6fa61 AG |
663 | TRACE("jmpa"); |
664 | pc = tgt - 2; | |
665 | } | |
666 | break; | |
667 | case 0x1b: /* ldi.b (immediate) */ | |
668 | { | |
669 | int reg = (inst >> 4) & 0xf; | |
670 | ||
5c27d164 | 671 | unsigned int val = EXTRACT_WORD(pc+2); |
fdd6fa61 AG |
672 | TRACE("ldi.b"); |
673 | cpu.asregs.regs[reg] = val; | |
674 | pc += 4; | |
675 | } | |
676 | break; | |
677 | case 0x1c: /* ld.b (register indirect) */ | |
678 | { | |
679 | int src = inst & 0xf; | |
680 | int dest = (inst >> 4) & 0xf; | |
681 | int xv; | |
682 | TRACE("ld.b"); | |
683 | xv = cpu.asregs.regs[src]; | |
5c27d164 | 684 | cpu.asregs.regs[dest] = rbat (scpu, opc, xv); |
fdd6fa61 AG |
685 | } |
686 | break; | |
687 | case 0x1d: /* lda.b */ | |
688 | { | |
689 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 690 | unsigned int addr = EXTRACT_WORD(pc+2); |
fdd6fa61 | 691 | TRACE("lda.b"); |
5c27d164 | 692 | cpu.asregs.regs[reg] = rbat (scpu, opc, addr); |
fdd6fa61 AG |
693 | pc += 4; |
694 | } | |
695 | break; | |
696 | case 0x1e: /* st.b */ | |
697 | { | |
698 | int dest = (inst >> 4) & 0xf; | |
699 | int val = inst & 0xf; | |
700 | TRACE("st.b"); | |
5c27d164 | 701 | wbat (scpu, opc, cpu.asregs.regs[dest], cpu.asregs.regs[val]); |
fdd6fa61 AG |
702 | } |
703 | break; | |
704 | case 0x1f: /* sta.b */ | |
705 | { | |
706 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 707 | unsigned int addr = EXTRACT_WORD(pc+2); |
fdd6fa61 | 708 | TRACE("sta.b"); |
5c27d164 | 709 | wbat (scpu, opc, addr, cpu.asregs.regs[reg]); |
fdd6fa61 AG |
710 | pc += 4; |
711 | } | |
712 | break; | |
713 | case 0x20: /* ldi.s (immediate) */ | |
714 | { | |
715 | int reg = (inst >> 4) & 0xf; | |
716 | ||
5c27d164 | 717 | unsigned int val = EXTRACT_WORD(pc+2); |
fdd6fa61 AG |
718 | TRACE("ldi.s"); |
719 | cpu.asregs.regs[reg] = val; | |
720 | pc += 4; | |
721 | } | |
722 | break; | |
723 | case 0x21: /* ld.s (register indirect) */ | |
724 | { | |
725 | int src = inst & 0xf; | |
726 | int dest = (inst >> 4) & 0xf; | |
727 | int xv; | |
728 | TRACE("ld.s"); | |
729 | xv = cpu.asregs.regs[src]; | |
5c27d164 | 730 | cpu.asregs.regs[dest] = rsat (scpu, opc, xv); |
fdd6fa61 AG |
731 | } |
732 | break; | |
733 | case 0x22: /* lda.s */ | |
734 | { | |
735 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 736 | unsigned int addr = EXTRACT_WORD(pc+2); |
fdd6fa61 | 737 | TRACE("lda.s"); |
5c27d164 | 738 | cpu.asregs.regs[reg] = rsat (scpu, opc, addr); |
fdd6fa61 AG |
739 | pc += 4; |
740 | } | |
741 | break; | |
742 | case 0x23: /* st.s */ | |
743 | { | |
744 | int dest = (inst >> 4) & 0xf; | |
745 | int val = inst & 0xf; | |
746 | TRACE("st.s"); | |
5c27d164 | 747 | wsat (scpu, opc, cpu.asregs.regs[dest], cpu.asregs.regs[val]); |
fdd6fa61 AG |
748 | } |
749 | break; | |
750 | case 0x24: /* sta.s */ | |
751 | { | |
752 | int reg = (inst >> 4) & 0xf; | |
5c27d164 | 753 | unsigned int addr = EXTRACT_WORD(pc+2); |
fdd6fa61 | 754 | TRACE("sta.s"); |
5c27d164 | 755 | wsat (scpu, opc, addr, cpu.asregs.regs[reg]); |
fdd6fa61 AG |
756 | pc += 4; |
757 | } | |
758 | break; | |
759 | case 0x25: /* jmp */ | |
760 | { | |
761 | int reg = (inst >> 4) & 0xf; | |
762 | TRACE("jmp"); | |
763 | pc = cpu.asregs.regs[reg] - 2; | |
764 | } | |
765 | break; | |
766 | case 0x26: /* and */ | |
767 | { | |
768 | int a = (inst >> 4) & 0xf; | |
769 | int b = inst & 0xf; | |
770 | int av, bv; | |
771 | TRACE("and"); | |
772 | av = cpu.asregs.regs[a]; | |
773 | bv = cpu.asregs.regs[b]; | |
774 | cpu.asregs.regs[a] = av & bv; | |
775 | } | |
776 | break; | |
777 | case 0x27: /* lshr */ | |
778 | { | |
779 | int a = (inst >> 4) & 0xf; | |
780 | int b = inst & 0xf; | |
781 | int av = cpu.asregs.regs[a]; | |
782 | int bv = cpu.asregs.regs[b]; | |
783 | TRACE("lshr"); | |
784 | cpu.asregs.regs[a] = (unsigned) ((unsigned) av >> bv); | |
785 | } | |
786 | break; | |
787 | case 0x28: /* ashl */ | |
788 | { | |
789 | int a = (inst >> 4) & 0xf; | |
790 | int b = inst & 0xf; | |
791 | int av = cpu.asregs.regs[a]; | |
792 | int bv = cpu.asregs.regs[b]; | |
793 | TRACE("ashl"); | |
794 | cpu.asregs.regs[a] = av << bv; | |
795 | } | |
796 | break; | |
797 | case 0x29: /* sub.l */ | |
798 | { | |
799 | int a = (inst >> 4) & 0xf; | |
800 | int b = inst & 0xf; | |
801 | unsigned av = cpu.asregs.regs[a]; | |
802 | unsigned bv = cpu.asregs.regs[b]; | |
803 | TRACE("sub.l"); | |
804 | cpu.asregs.regs[a] = av - bv; | |
805 | } | |
806 | break; | |
807 | case 0x2a: /* neg */ | |
808 | { | |
809 | int a = (inst >> 4) & 0xf; | |
810 | int b = inst & 0xf; | |
811 | int bv = cpu.asregs.regs[b]; | |
812 | TRACE("neg"); | |
813 | cpu.asregs.regs[a] = - bv; | |
814 | } | |
815 | break; | |
816 | case 0x2b: /* or */ | |
817 | { | |
818 | int a = (inst >> 4) & 0xf; | |
819 | int b = inst & 0xf; | |
820 | int av, bv; | |
821 | TRACE("or"); | |
822 | av = cpu.asregs.regs[a]; | |
823 | bv = cpu.asregs.regs[b]; | |
824 | cpu.asregs.regs[a] = av | bv; | |
825 | } | |
826 | break; | |
827 | case 0x2c: /* not */ | |
828 | { | |
829 | int a = (inst >> 4) & 0xf; | |
830 | int b = inst & 0xf; | |
831 | int bv = cpu.asregs.regs[b]; | |
832 | TRACE("not"); | |
833 | cpu.asregs.regs[a] = 0xffffffff ^ bv; | |
834 | } | |
835 | break; | |
836 | case 0x2d: /* ashr */ | |
837 | { | |
838 | int a = (inst >> 4) & 0xf; | |
839 | int b = inst & 0xf; | |
840 | int av = cpu.asregs.regs[a]; | |
841 | int bv = cpu.asregs.regs[b]; | |
842 | TRACE("ashr"); | |
843 | cpu.asregs.regs[a] = av >> bv; | |
844 | } | |
845 | break; | |
846 | case 0x2e: /* xor */ | |
847 | { | |
848 | int a = (inst >> 4) & 0xf; | |
849 | int b = inst & 0xf; | |
850 | int av, bv; | |
851 | TRACE("xor"); | |
852 | av = cpu.asregs.regs[a]; | |
853 | bv = cpu.asregs.regs[b]; | |
854 | cpu.asregs.regs[a] = av ^ bv; | |
855 | } | |
856 | break; | |
857 | case 0x2f: /* mul.l */ | |
858 | { | |
859 | int a = (inst >> 4) & 0xf; | |
860 | int b = inst & 0xf; | |
861 | unsigned av = cpu.asregs.regs[a]; | |
862 | unsigned bv = cpu.asregs.regs[b]; | |
863 | TRACE("mul.l"); | |
864 | cpu.asregs.regs[a] = av * bv; | |
865 | } | |
866 | break; | |
867 | case 0x30: /* swi */ | |
868 | { | |
5c27d164 | 869 | unsigned int inum = EXTRACT_WORD(pc+2); |
fdd6fa61 | 870 | TRACE("swi"); |
5c27d164 AG |
871 | /* Set the special registers appropriately. */ |
872 | cpu.asregs.sregs[2] = 3; /* MOXIE_EX_SWI */ | |
873 | cpu.asregs.sregs[3] = inum; | |
fdd6fa61 AG |
874 | switch (inum) |
875 | { | |
876 | case 0x1: /* SYS_exit */ | |
877 | { | |
878 | cpu.asregs.exception = SIGQUIT; | |
879 | break; | |
880 | } | |
881 | case 0x2: /* SYS_open */ | |
882 | { | |
5c27d164 | 883 | char fname[1024]; |
fdd6fa61 | 884 | int mode = (int) convert_target_flags ((unsigned) cpu.asregs.regs[3]); |
7a321525 | 885 | int perm = (int) cpu.asregs.regs[4]; |
fdd6fa61 | 886 | int fd = open (fname, mode, perm); |
5c27d164 AG |
887 | sim_core_read_buffer (sd, scpu, read_map, fname, |
888 | cpu.asregs.regs[2], 1024); | |
fdd6fa61 AG |
889 | /* FIXME - set errno */ |
890 | cpu.asregs.regs[2] = fd; | |
891 | break; | |
892 | } | |
893 | case 0x4: /* SYS_read */ | |
894 | { | |
895 | int fd = cpu.asregs.regs[2]; | |
7a321525 | 896 | unsigned len = (unsigned) cpu.asregs.regs[4]; |
5c27d164 | 897 | char *buf = malloc (len); |
fdd6fa61 | 898 | cpu.asregs.regs[2] = read (fd, buf, len); |
5c27d164 AG |
899 | sim_core_write_buffer (sd, scpu, write_map, buf, |
900 | cpu.asregs.regs[3], len); | |
901 | free (buf); | |
fdd6fa61 AG |
902 | break; |
903 | } | |
904 | case 0x5: /* SYS_write */ | |
905 | { | |
5c27d164 | 906 | char *str; |
fdd6fa61 | 907 | /* String length is at 0x12($fp) */ |
7a321525 | 908 | unsigned count, len = (unsigned) cpu.asregs.regs[4]; |
5c27d164 AG |
909 | str = malloc (len); |
910 | sim_core_read_buffer (sd, scpu, read_map, str, | |
911 | cpu.asregs.regs[3], len); | |
fdd6fa61 | 912 | count = write (cpu.asregs.regs[2], str, len); |
5c27d164 | 913 | free (str); |
fdd6fa61 AG |
914 | cpu.asregs.regs[2] = count; |
915 | break; | |
916 | } | |
7a321525 AG |
917 | case 0xffffffff: /* Linux System Call */ |
918 | { | |
919 | unsigned int handler = cpu.asregs.sregs[1]; | |
920 | unsigned int sp = cpu.asregs.regs[1]; | |
7a321525 AG |
921 | |
922 | /* Save a slot for the static chain. */ | |
923 | sp -= 4; | |
924 | ||
925 | /* Push the return address. */ | |
926 | sp -= 4; | |
5c27d164 | 927 | wlat (scpu, opc, sp, pc + 6); |
7a321525 AG |
928 | |
929 | /* Push the current frame pointer. */ | |
930 | sp -= 4; | |
5c27d164 | 931 | wlat (scpu, opc, sp, cpu.asregs.regs[0]); |
7a321525 AG |
932 | |
933 | /* Uncache the stack pointer and set the fp & pc. */ | |
934 | cpu.asregs.regs[1] = sp; | |
935 | cpu.asregs.regs[0] = sp; | |
936 | pc = handler - 6; | |
937 | } | |
fdd6fa61 AG |
938 | default: |
939 | break; | |
940 | } | |
941 | pc += 4; | |
942 | } | |
943 | break; | |
944 | case 0x31: /* div.l */ | |
945 | { | |
946 | int a = (inst >> 4) & 0xf; | |
947 | int b = inst & 0xf; | |
948 | int av = cpu.asregs.regs[a]; | |
949 | int bv = cpu.asregs.regs[b]; | |
950 | TRACE("div.l"); | |
951 | cpu.asregs.regs[a] = av / bv; | |
952 | } | |
953 | break; | |
954 | case 0x32: /* udiv.l */ | |
955 | { | |
956 | int a = (inst >> 4) & 0xf; | |
957 | int b = inst & 0xf; | |
958 | unsigned int av = cpu.asregs.regs[a]; | |
959 | unsigned int bv = cpu.asregs.regs[b]; | |
960 | TRACE("udiv.l"); | |
961 | cpu.asregs.regs[a] = (av / bv); | |
962 | } | |
963 | break; | |
964 | case 0x33: /* mod.l */ | |
965 | { | |
966 | int a = (inst >> 4) & 0xf; | |
967 | int b = inst & 0xf; | |
968 | int av = cpu.asregs.regs[a]; | |
969 | int bv = cpu.asregs.regs[b]; | |
970 | TRACE("mod.l"); | |
971 | cpu.asregs.regs[a] = av % bv; | |
972 | } | |
973 | break; | |
974 | case 0x34: /* umod.l */ | |
975 | { | |
976 | int a = (inst >> 4) & 0xf; | |
977 | int b = inst & 0xf; | |
978 | unsigned int av = cpu.asregs.regs[a]; | |
979 | unsigned int bv = cpu.asregs.regs[b]; | |
980 | TRACE("umod.l"); | |
981 | cpu.asregs.regs[a] = (av % bv); | |
982 | } | |
983 | break; | |
984 | case 0x35: /* brk */ | |
985 | TRACE("brk"); | |
986 | cpu.asregs.exception = SIGTRAP; | |
987 | pc -= 2; /* Adjust pc */ | |
988 | break; | |
989 | case 0x36: /* ldo.b */ | |
990 | { | |
5c27d164 | 991 | unsigned int addr = EXTRACT_WORD(pc+2); |
fdd6fa61 AG |
992 | int a = (inst >> 4) & 0xf; |
993 | int b = inst & 0xf; | |
994 | TRACE("ldo.b"); | |
995 | addr += cpu.asregs.regs[b]; | |
5c27d164 | 996 | cpu.asregs.regs[a] = rbat (scpu, opc, addr); |
fdd6fa61 AG |
997 | pc += 4; |
998 | } | |
999 | break; | |
1000 | case 0x37: /* sto.b */ | |
1001 | { | |
5c27d164 | 1002 | unsigned int addr = EXTRACT_WORD(pc+2); |
fdd6fa61 AG |
1003 | int a = (inst >> 4) & 0xf; |
1004 | int b = inst & 0xf; | |
1005 | TRACE("sto.b"); | |
1006 | addr += cpu.asregs.regs[a]; | |
5c27d164 | 1007 | wbat (scpu, opc, addr, cpu.asregs.regs[b]); |
fdd6fa61 AG |
1008 | pc += 4; |
1009 | } | |
1010 | break; | |
1011 | case 0x38: /* ldo.s */ | |
1012 | { | |
5c27d164 | 1013 | unsigned int addr = EXTRACT_WORD(pc+2); |
fdd6fa61 AG |
1014 | int a = (inst >> 4) & 0xf; |
1015 | int b = inst & 0xf; | |
1016 | TRACE("ldo.s"); | |
1017 | addr += cpu.asregs.regs[b]; | |
5c27d164 | 1018 | cpu.asregs.regs[a] = rsat (scpu, opc, addr); |
fdd6fa61 AG |
1019 | pc += 4; |
1020 | } | |
1021 | break; | |
1022 | case 0x39: /* sto.s */ | |
1023 | { | |
5c27d164 | 1024 | unsigned int addr = EXTRACT_WORD(pc+2); |
fdd6fa61 AG |
1025 | int a = (inst >> 4) & 0xf; |
1026 | int b = inst & 0xf; | |
1027 | TRACE("sto.s"); | |
1028 | addr += cpu.asregs.regs[a]; | |
5c27d164 | 1029 | wsat (scpu, opc, addr, cpu.asregs.regs[b]); |
fdd6fa61 AG |
1030 | pc += 4; |
1031 | } | |
1032 | break; | |
1033 | default: | |
1034 | opc = opcode; | |
1035 | TRACE("SIGILL1"); | |
1036 | cpu.asregs.exception = SIGILL; | |
1037 | break; | |
1038 | } | |
1039 | } | |
1040 | ||
1041 | insts++; | |
1042 | pc += 2; | |
1043 | ||
1044 | } while (!cpu.asregs.exception); | |
1045 | ||
1046 | /* Hide away the things we've cached while executing. */ | |
1047 | cpu.asregs.regs[PC_REGNO] = pc; | |
1048 | cpu.asregs.insts += insts; /* instructions done ... */ | |
fdd6fa61 AG |
1049 | } |
1050 | ||
1051 | int | |
1052 | sim_write (sd, addr, buffer, size) | |
1053 | SIM_DESC sd; | |
1054 | SIM_ADDR addr; | |
5558e7e6 | 1055 | const unsigned char * buffer; |
fdd6fa61 AG |
1056 | int size; |
1057 | { | |
5c27d164 AG |
1058 | sim_cpu *scpu = STATE_CPU (sd, 0); /* FIXME */ |
1059 | ||
1060 | sim_core_write_buffer (sd, scpu, write_map, buffer, addr, size); | |
1061 | ||
fdd6fa61 AG |
1062 | return size; |
1063 | } | |
1064 | ||
1065 | int | |
1066 | sim_read (sd, addr, buffer, size) | |
1067 | SIM_DESC sd; | |
1068 | SIM_ADDR addr; | |
1069 | unsigned char * buffer; | |
1070 | int size; | |
1071 | { | |
5c27d164 AG |
1072 | sim_cpu *scpu = STATE_CPU (sd, 0); /* FIXME */ |
1073 | ||
1074 | sim_core_read_buffer (sd, scpu, read_map, buffer, addr, size); | |
fdd6fa61 AG |
1075 | |
1076 | return size; | |
1077 | } | |
1078 | ||
1079 | ||
1080 | int | |
1081 | sim_store_register (sd, rn, memory, length) | |
1082 | SIM_DESC sd; | |
1083 | int rn; | |
1084 | unsigned char * memory; | |
1085 | int length; | |
1086 | { | |
fdd6fa61 AG |
1087 | if (rn < NUM_MOXIE_REGS && rn >= 0) |
1088 | { | |
1089 | if (length == 4) | |
1090 | { | |
1091 | long ival; | |
1092 | ||
1093 | /* misalignment safe */ | |
1094 | ival = moxie_extract_unsigned_integer (memory, 4); | |
1095 | cpu.asints[rn] = ival; | |
1096 | } | |
1097 | ||
1098 | return 4; | |
1099 | } | |
1100 | else | |
1101 | return 0; | |
1102 | } | |
1103 | ||
1104 | int | |
1105 | sim_fetch_register (sd, rn, memory, length) | |
1106 | SIM_DESC sd; | |
1107 | int rn; | |
1108 | unsigned char * memory; | |
1109 | int length; | |
1110 | { | |
fdd6fa61 AG |
1111 | if (rn < NUM_MOXIE_REGS && rn >= 0) |
1112 | { | |
1113 | if (length == 4) | |
1114 | { | |
1115 | long ival = cpu.asints[rn]; | |
1116 | ||
1117 | /* misalignment-safe */ | |
1118 | moxie_store_unsigned_integer (memory, 4, ival); | |
1119 | } | |
1120 | ||
1121 | return 4; | |
1122 | } | |
1123 | else | |
1124 | return 0; | |
1125 | } | |
1126 | ||
1127 | ||
1128 | int | |
1129 | sim_trace (sd) | |
1130 | SIM_DESC sd; | |
1131 | { | |
1132 | if (tracefile == 0) | |
1133 | tracefile = fopen("trace.csv", "wb"); | |
1134 | ||
1135 | tracing = 1; | |
1136 | ||
1137 | sim_resume (sd, 0, 0); | |
1138 | ||
1139 | tracing = 0; | |
1140 | ||
1141 | return 1; | |
1142 | } | |
1143 | ||
1144 | void | |
1145 | sim_stop_reason (sd, reason, sigrc) | |
1146 | SIM_DESC sd; | |
1147 | enum sim_stop * reason; | |
1148 | int * sigrc; | |
1149 | { | |
1150 | if (cpu.asregs.exception == SIGQUIT) | |
1151 | { | |
1152 | * reason = sim_exited; | |
1153 | * sigrc = cpu.asregs.regs[2]; | |
1154 | } | |
1155 | else | |
1156 | { | |
1157 | * reason = sim_stopped; | |
1158 | * sigrc = cpu.asregs.exception; | |
1159 | } | |
1160 | } | |
1161 | ||
1162 | ||
1163 | int | |
1164 | sim_stop (sd) | |
1165 | SIM_DESC sd; | |
1166 | { | |
1167 | cpu.asregs.exception = SIGINT; | |
1168 | return 1; | |
1169 | } | |
1170 | ||
1171 | ||
1172 | void | |
1173 | sim_info (sd, verbose) | |
1174 | SIM_DESC sd; | |
1175 | int verbose; | |
1176 | { | |
1177 | callback->printf_filtered (callback, "\n\n# instructions executed %llu\n", | |
1178 | cpu.asregs.insts); | |
1179 | } | |
1180 | ||
1181 | ||
1182 | SIM_DESC | |
1183 | sim_open (kind, cb, abfd, argv) | |
1184 | SIM_OPEN_KIND kind; | |
1185 | host_callback * cb; | |
1186 | struct bfd * abfd; | |
1187 | char ** argv; | |
1188 | { | |
5c27d164 | 1189 | SIM_DESC sd = sim_state_alloc (kind, cb); |
5c27d164 AG |
1190 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
1191 | ||
1192 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) | |
1193 | return 0; | |
1194 | ||
1195 | sim_do_command(sd," memory region 0x00000000,0x4000000") ; | |
1196 | sim_do_command(sd," memory region 0xE0000000,0x10000") ; | |
1197 | ||
fdd6fa61 AG |
1198 | myname = argv[0]; |
1199 | callback = cb; | |
1200 | ||
1201 | if (kind == SIM_OPEN_STANDALONE) | |
1202 | issue_messages = 1; | |
1203 | ||
fdd6fa61 AG |
1204 | set_initial_gprs (); /* Reset the GPR registers. */ |
1205 | ||
b8dcd182 | 1206 | /* Configure/verify the target byte order and other runtime |
11db68fd | 1207 | configuration options. */ |
b8dcd182 AG |
1208 | if (sim_config (sd) != SIM_RC_OK) |
1209 | { | |
1210 | sim_module_uninstall (sd); | |
1211 | return 0; | |
1212 | } | |
1213 | ||
1214 | if (sim_post_argv_init (sd) != SIM_RC_OK) | |
1215 | { | |
1216 | /* Uninstall the modules to avoid memory leaks, | |
1217 | file descriptor leaks, etc. */ | |
1218 | sim_module_uninstall (sd); | |
1219 | return 0; | |
1220 | } | |
1221 | ||
5c27d164 | 1222 | return sd; |
fdd6fa61 AG |
1223 | } |
1224 | ||
1225 | void | |
1226 | sim_close (sd, quitting) | |
1227 | SIM_DESC sd; | |
1228 | int quitting; | |
1229 | { | |
1230 | /* nothing to do */ | |
1231 | } | |
1232 | ||
5c27d164 AG |
1233 | |
1234 | /* Load the device tree blob. */ | |
1235 | ||
1236 | static void | |
1237 | load_dtb (SIM_DESC sd, const char *filename) | |
1238 | { | |
1239 | int size = 0; | |
1240 | FILE *f = fopen (filename, "rb"); | |
1241 | char *buf; | |
1242 | sim_cpu *scpu = STATE_CPU (sd, 0); /* FIXME */ | |
1243 | if (f == NULL) | |
1244 | { | |
1245 | printf ("WARNING: ``%s'' could not be opened.\n", filename); | |
1246 | return; | |
1247 | } | |
1248 | fseek (f, 0, SEEK_END); | |
1249 | size = ftell(f); | |
1250 | fseek (f, 0, SEEK_SET); | |
1251 | buf = alloca (size); | |
1252 | if (size != fread (buf, 1, size, f)) | |
1253 | { | |
1254 | printf ("ERROR: error reading ``%s''.\n", filename); | |
1255 | return; | |
1256 | } | |
1257 | sim_core_write_buffer (sd, scpu, write_map, buf, 0xE0000000, size); | |
1258 | cpu.asregs.sregs[9] = 0xE0000000; | |
1259 | fclose (f); | |
1260 | } | |
1261 | ||
fdd6fa61 AG |
1262 | SIM_RC |
1263 | sim_load (sd, prog, abfd, from_tty) | |
1264 | SIM_DESC sd; | |
b2b255bd | 1265 | const char * prog; |
fdd6fa61 AG |
1266 | bfd * abfd; |
1267 | int from_tty; | |
1268 | { | |
1269 | ||
1270 | /* Do the right thing for ELF executables; this turns out to be | |
1271 | just about the right thing for any object format that: | |
1272 | - we crack using BFD routines | |
1273 | - follows the traditional UNIX text/data/bss layout | |
1274 | - calls the bss section ".bss". */ | |
1275 | ||
1276 | extern bfd * sim_load_file (); /* ??? Don't know where this should live. */ | |
1277 | bfd * prog_bfd; | |
1278 | ||
1279 | { | |
1280 | bfd * handle; | |
1281 | handle = bfd_openr (prog, 0); /* could be "moxie" */ | |
1282 | ||
1283 | if (!handle) | |
1284 | { | |
1285 | printf("``%s'' could not be opened.\n", prog); | |
1286 | return SIM_RC_FAIL; | |
1287 | } | |
1288 | ||
1289 | /* Makes sure that we have an object file, also cleans gets the | |
1290 | section headers in place. */ | |
1291 | if (!bfd_check_format (handle, bfd_object)) | |
1292 | { | |
1293 | /* wasn't an object file */ | |
1294 | bfd_close (handle); | |
1295 | printf ("``%s'' is not appropriate object file.\n", prog); | |
1296 | return SIM_RC_FAIL; | |
1297 | } | |
1298 | ||
1299 | /* Clean up after ourselves. */ | |
1300 | bfd_close (handle); | |
1301 | } | |
1302 | ||
1303 | /* from sh -- dac */ | |
1304 | prog_bfd = sim_load_file (sd, myname, callback, prog, abfd, | |
1305 | sim_kind == SIM_OPEN_DEBUG, | |
1306 | 0, sim_write); | |
1307 | if (prog_bfd == NULL) | |
1308 | return SIM_RC_FAIL; | |
1309 | ||
1310 | if (abfd == NULL) | |
1311 | bfd_close (prog_bfd); | |
1312 | ||
1313 | return SIM_RC_OK; | |
1314 | } | |
1315 | ||
1316 | SIM_RC | |
1317 | sim_create_inferior (sd, prog_bfd, argv, env) | |
1318 | SIM_DESC sd; | |
1319 | struct bfd * prog_bfd; | |
1320 | char ** argv; | |
1321 | char ** env; | |
1322 | { | |
1323 | char ** avp; | |
1324 | int l, argc, i, tp; | |
5c27d164 | 1325 | sim_cpu *scpu = STATE_CPU (sd, 0); /* FIXME */ |
fdd6fa61 AG |
1326 | |
1327 | /* Set the initial register set. */ | |
1328 | l = issue_messages; | |
1329 | issue_messages = 0; | |
1330 | set_initial_gprs (); | |
1331 | issue_messages = l; | |
1332 | ||
bc56c8fa JK |
1333 | if (prog_bfd != NULL) |
1334 | cpu.asregs.regs[PC_REGNO] = bfd_get_start_address (prog_bfd); | |
fdd6fa61 AG |
1335 | |
1336 | /* Copy args into target memory. */ | |
1337 | avp = argv; | |
bc56c8fa | 1338 | for (argc = 0; avp && *avp; avp++) |
fdd6fa61 AG |
1339 | argc++; |
1340 | ||
1341 | /* Target memory looks like this: | |
1342 | 0x00000000 zero word | |
1343 | 0x00000004 argc word | |
1344 | 0x00000008 start of argv | |
1345 | . | |
1346 | 0x0000???? end of argv | |
1347 | 0x0000???? zero word | |
1348 | 0x0000???? start of data pointed to by argv */ | |
1349 | ||
5c27d164 AG |
1350 | wlat (scpu, 0, 0, 0); |
1351 | wlat (scpu, 0, 4, argc); | |
fdd6fa61 AG |
1352 | |
1353 | /* tp is the offset of our first argv data. */ | |
1354 | tp = 4 + 4 + argc * 4 + 4; | |
1355 | ||
1356 | for (i = 0; i < argc; i++) | |
1357 | { | |
1358 | /* Set the argv value. */ | |
5c27d164 | 1359 | wlat (scpu, 0, 4 + 4 + i * 4, tp); |
fdd6fa61 AG |
1360 | |
1361 | /* Store the string. */ | |
5c27d164 AG |
1362 | sim_core_write_buffer (sd, scpu, write_map, argv[i], |
1363 | tp, strlen(argv[i])+1); | |
fdd6fa61 AG |
1364 | tp += strlen (argv[i]) + 1; |
1365 | } | |
1366 | ||
5c27d164 AG |
1367 | wlat (scpu, 0, 4 + 4 + i * 4, 0); |
1368 | ||
1369 | load_dtb (sd, DTB); | |
fdd6fa61 AG |
1370 | |
1371 | return SIM_RC_OK; | |
1372 | } | |
1373 | ||
1374 | void | |
1375 | sim_kill (sd) | |
1376 | SIM_DESC sd; | |
1377 | { | |
1378 | if (tracefile) | |
1379 | fclose(tracefile); | |
1380 | } | |
1381 | ||
1382 | void | |
1383 | sim_do_command (sd, cmd) | |
1384 | SIM_DESC sd; | |
60d847df | 1385 | const char *cmd; |
fdd6fa61 | 1386 | { |
5c27d164 AG |
1387 | if (sim_args_command (sd, cmd) != SIM_RC_OK) |
1388 | sim_io_printf (sd, | |
1389 | "Error: \"%s\" is not a valid moxie simulator command.\n", | |
fdd6fa61 | 1390 | cmd); |
fdd6fa61 AG |
1391 | } |
1392 | ||
1393 | void | |
1394 | sim_set_callbacks (ptr) | |
1395 | host_callback * ptr; | |
1396 | { | |
1397 | callback = ptr; | |
1398 | } |