Commit | Line | Data |
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8bae0a0c JSC |
1 | /*> interp.c <*/ |
2 | /* Simulator for the MIPS architecture. | |
3 | ||
4 | This file is part of the MIPS sim | |
5 | ||
6 | THIS SOFTWARE IS NOT COPYRIGHTED | |
7 | ||
8 | Cygnus offers the following for use in the public domain. Cygnus | |
9 | makes no warranty with regard to the software or it's performance | |
10 | and the user accepts the software "AS IS" with all faults. | |
11 | ||
12 | CYGNUS DISCLAIMS ANY WARRANTIES, EXPRESS OR IMPLIED, WITH REGARD TO | |
13 | THIS SOFTWARE INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
14 | MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
15 | ||
16 | $Revision$ | |
15232df4 | 17 | $Date$ |
8bae0a0c JSC |
18 | |
19 | NOTEs: | |
20 | ||
8bae0a0c JSC |
21 | The IDT monitor (found on the VR4300 board), seems to lie about |
22 | register contents. It seems to treat the registers as sign-extended | |
23 | 32-bit values. This cause *REAL* problems when single-stepping 64-bit | |
24 | code on the hardware. | |
25 | ||
26 | */ | |
27 | ||
e2f8ffb7 AC |
28 | /* The TRACE manifests enable the provision of extra features. If they |
29 | are not defined then a simpler (quicker) simulator is constructed | |
30 | without the required run-time checks, etc. */ | |
8bae0a0c JSC |
31 | #if 1 /* 0 to allow user build selection, 1 to force inclusion */ |
32 | #define TRACE (1) | |
8bae0a0c JSC |
33 | #endif |
34 | ||
2e61a3ad AC |
35 | #include "bfd.h" |
36 | #include "sim-main.h" | |
37 | #include "sim-utils.h" | |
38 | #include "sim-options.h" | |
50a2a691 | 39 | #include "sim-assert.h" |
2e61a3ad | 40 | |
15232df4 FCE |
41 | /* start-sanitize-sky */ |
42 | #ifdef TARGET_SKY | |
43 | #include "sky-vu.h" | |
44 | #include "sky-vpe.h" | |
45 | #include "sky-libvpe.h" | |
64ed8b6a | 46 | #include "sky-pke.h" |
ebcfd86a | 47 | #include "idecode.h" |
15232df4 FCE |
48 | #endif |
49 | /* end-sanitize-sky */ | |
50 | ||
4fa134be ILT |
51 | #include "config.h" |
52 | ||
8bae0a0c JSC |
53 | #include <stdio.h> |
54 | #include <stdarg.h> | |
55 | #include <ansidecl.h> | |
8bae0a0c JSC |
56 | #include <ctype.h> |
57 | #include <limits.h> | |
58 | #include <math.h> | |
4fa134be ILT |
59 | #ifdef HAVE_STDLIB_H |
60 | #include <stdlib.h> | |
61 | #endif | |
62 | #ifdef HAVE_STRING_H | |
63 | #include <string.h> | |
64 | #else | |
65 | #ifdef HAVE_STRINGS_H | |
66 | #include <strings.h> | |
67 | #endif | |
68 | #endif | |
8bae0a0c JSC |
69 | |
70 | #include "getopt.h" | |
71 | #include "libiberty.h" | |
9d52bcb7 | 72 | #include "bfd.h" |
8bae0a0c | 73 | #include "callback.h" /* GDB simulator callback interface */ |
e3d12c65 | 74 | #include "remote-sim.h" /* GDB simulator interface */ |
8bae0a0c | 75 | |
f24b7b69 JSC |
76 | #include "sysdep.h" |
77 | ||
53b9417e DE |
78 | #ifndef PARAMS |
79 | #define PARAMS(x) | |
80 | #endif | |
81 | ||
82 | char* pr_addr PARAMS ((SIM_ADDR addr)); | |
87e43259 | 83 | char* pr_uword64 PARAMS ((uword64 addr)); |
53b9417e | 84 | |
f24b7b69 | 85 | |
8bae0a0c | 86 | /* Get the simulator engine description, without including the code: */ |
69d5a566 | 87 | #if !(WITH_IGEN) |
8bae0a0c | 88 | #define SIM_MANIFESTS |
284e759d | 89 | #include "oengine.c" |
8bae0a0c | 90 | #undef SIM_MANIFESTS |
192ae475 | 91 | #endif |
8bae0a0c | 92 | |
01737f42 AC |
93 | /* Within interp.c we refer to the sim_state and sim_cpu directly. */ |
94 | #define SD sd | |
95 | #define CPU cpu | |
96 | ||
f7481d45 | 97 | |
8bae0a0c JSC |
98 | /* The following reserved instruction value is used when a simulator |
99 | trap is required. NOTE: Care must be taken, since this value may be | |
100 | used in later revisions of the MIPS ISA. */ | |
53b9417e DE |
101 | #define RSVD_INSTRUCTION (0x00000005) |
102 | #define RSVD_INSTRUCTION_MASK (0xFC00003F) | |
103 | ||
104 | #define RSVD_INSTRUCTION_ARG_SHIFT 6 | |
105 | #define RSVD_INSTRUCTION_ARG_MASK 0xFFFFF | |
106 | ||
8bae0a0c | 107 | |
6eedf3f4 MA |
108 | /* Bits in the Debug register */ |
109 | #define Debug_DBD 0x80000000 /* Debug Branch Delay */ | |
110 | #define Debug_DM 0x40000000 /* Debug Mode */ | |
111 | #define Debug_DBp 0x00000002 /* Debug Breakpoint indicator */ | |
112 | ||
113 | ||
114 | ||
8bae0a0c | 115 | |
8bae0a0c | 116 | |
e3d12c65 DE |
117 | /*---------------------------------------------------------------------------*/ |
118 | /*-- GDB simulator interface ------------------------------------------------*/ | |
119 | /*---------------------------------------------------------------------------*/ | |
120 | ||
0c2c5f61 | 121 | static void ColdReset PARAMS((SIM_DESC sd)); |
e3d12c65 DE |
122 | |
123 | /*---------------------------------------------------------------------------*/ | |
124 | ||
8bae0a0c | 125 | |
8bae0a0c | 126 | |
8bae0a0c | 127 | #define DELAYSLOT() {\ |
0c2c5f61 | 128 | if (STATE & simDELAYSLOT)\ |
18c64df6 | 129 | sim_io_eprintf(sd,"Delay slot already activated (branch in delay slot?)\n");\ |
0c2c5f61 | 130 | STATE |= simDELAYSLOT;\ |
8bae0a0c JSC |
131 | } |
132 | ||
aaff8437 ILT |
133 | #define JALDELAYSLOT() {\ |
134 | DELAYSLOT ();\ | |
0c2c5f61 | 135 | STATE |= simJALDELAYSLOT;\ |
aaff8437 ILT |
136 | } |
137 | ||
8bae0a0c | 138 | #define NULLIFY() {\ |
0c2c5f61 AC |
139 | STATE &= ~simDELAYSLOT;\ |
140 | STATE |= simSKIPNEXT;\ | |
8bae0a0c JSC |
141 | } |
142 | ||
6eedf3f4 | 143 | #define CANCELDELAYSLOT() {\ |
0c2c5f61 AC |
144 | DSSTATE = 0;\ |
145 | STATE &= ~(simDELAYSLOT | simJALDELAYSLOT);\ | |
6eedf3f4 MA |
146 | } |
147 | ||
0c2c5f61 AC |
148 | #define INDELAYSLOT() ((STATE & simDELAYSLOT) != 0) |
149 | #define INJALDELAYSLOT() ((STATE & simJALDELAYSLOT) != 0) | |
aaff8437 | 150 | |
a9f7253f JSC |
151 | #define K0BASE (0x80000000) |
152 | #define K0SIZE (0x20000000) | |
153 | #define K1BASE (0xA0000000) | |
154 | #define K1SIZE (0x20000000) | |
525d929e AC |
155 | #define MONITOR_BASE (0xBFC00000) |
156 | #define MONITOR_SIZE (1 << 11) | |
157 | #define MEM_SIZE (2 << 20) | |
15232df4 | 158 | |
82ea14fd AC |
159 | /* start-sanitize-sky */ |
160 | #ifdef TARGET_SKY | |
161 | #undef MEM_SIZE | |
162 | #define MEM_SIZE (16 << 20) /* 16 MB */ | |
163 | #endif | |
164 | /* end-sanitize-sky */ | |
a9f7253f | 165 | |
8bae0a0c | 166 | #if defined(TRACE) |
4fa134be | 167 | static char *tracefile = "trace.din"; /* default filename for trace log */ |
030843d7 | 168 | FILE *tracefh = NULL; |
18c64df6 | 169 | static void open_trace PARAMS((SIM_DESC sd)); |
8bae0a0c JSC |
170 | #endif /* TRACE */ |
171 | ||
7c5d88c1 DE |
172 | static DECLARE_OPTION_HANDLER (mips_option_handler); |
173 | ||
1ff39ecb JL |
174 | enum { |
175 | OPTION_DINERO_TRACE = OPTION_START, | |
176 | OPTION_DINERO_FILE | |
177 | /* start-sanitize-sky */ | |
178 | ,OPTION_FLOAT_TYPE | |
179 | /* end-sanitize-sky */ | |
180 | }; | |
22de994d | 181 | |
50a2a691 | 182 | static SIM_RC |
7c5d88c1 | 183 | mips_option_handler (sd, cpu, opt, arg, is_command) |
50a2a691 | 184 | SIM_DESC sd; |
7c5d88c1 | 185 | sim_cpu *cpu; |
50a2a691 AC |
186 | int opt; |
187 | char *arg; | |
7c5d88c1 | 188 | int is_command; |
2e61a3ad | 189 | { |
01737f42 | 190 | int cpu_nr; |
50a2a691 AC |
191 | switch (opt) |
192 | { | |
22de994d | 193 | case OPTION_DINERO_TRACE: /* ??? */ |
50a2a691 AC |
194 | #if defined(TRACE) |
195 | /* Eventually the simTRACE flag could be treated as a toggle, to | |
196 | allow external control of the program points being traced | |
197 | (i.e. only from main onwards, excluding the run-time setup, | |
198 | etc.). */ | |
82ea14fd | 199 | for (cpu_nr = 0; cpu_nr < MAX_NR_PROCESSORS; cpu_nr++) |
50a2a691 | 200 | { |
01737f42 AC |
201 | sim_cpu *cpu = STATE_CPU (sd, cpu_nr); |
202 | if (arg == NULL) | |
203 | STATE |= simTRACE; | |
204 | else if (strcmp (arg, "yes") == 0) | |
205 | STATE |= simTRACE; | |
206 | else if (strcmp (arg, "no") == 0) | |
207 | STATE &= ~simTRACE; | |
208 | else if (strcmp (arg, "on") == 0) | |
209 | STATE |= simTRACE; | |
210 | else if (strcmp (arg, "off") == 0) | |
211 | STATE &= ~simTRACE; | |
212 | else | |
213 | { | |
1ff39ecb | 214 | fprintf (stderr, "Unrecognized dinero-trace option `%s'\n", arg); |
01737f42 AC |
215 | return SIM_RC_FAIL; |
216 | } | |
50a2a691 AC |
217 | } |
218 | return SIM_RC_OK; | |
219 | #else /* !TRACE */ | |
220 | fprintf(stderr,"\ | |
22de994d | 221 | Simulator constructed without dinero tracing support (for performance).\n\ |
50a2a691 AC |
222 | Re-compile simulator with \"-DTRACE\" to enable this option.\n"); |
223 | return SIM_RC_FAIL; | |
224 | #endif /* !TRACE */ | |
225 | ||
22de994d | 226 | case OPTION_DINERO_FILE: |
50a2a691 AC |
227 | #if defined(TRACE) |
228 | if (optarg != NULL) { | |
229 | char *tmp; | |
230 | tmp = (char *)malloc(strlen(optarg) + 1); | |
231 | if (tmp == NULL) | |
232 | { | |
18c64df6 | 233 | sim_io_printf(sd,"Failed to allocate buffer for tracefile name \"%s\"\n",optarg); |
50a2a691 AC |
234 | return SIM_RC_FAIL; |
235 | } | |
236 | else { | |
237 | strcpy(tmp,optarg); | |
238 | tracefile = tmp; | |
18c64df6 | 239 | sim_io_printf(sd,"Placing trace information into file \"%s\"\n",tracefile); |
50a2a691 AC |
240 | } |
241 | } | |
242 | #endif /* TRACE */ | |
243 | return SIM_RC_OK; | |
244 | ||
1ff39ecb JL |
245 | /* start-sanitize-sky */ |
246 | case OPTION_FLOAT_TYPE: | |
247 | /* Use host (fast) or target (accurate) floating point implementation. */ | |
248 | if (arg && strcmp (arg, "host") == 0) | |
249 | STATE_FP_TYPE_OPT (sd) &= ~STATE_FP_TYPE_OPT_TARGET; | |
250 | else if (arg && strcmp (arg, "target") == 0) | |
251 | STATE_FP_TYPE_OPT (sd) |= STATE_FP_TYPE_OPT_TARGET; | |
252 | else | |
253 | { | |
254 | fprintf (stderr, "Unrecognized float-type option `%s'\n", arg); | |
255 | return SIM_RC_FAIL; | |
256 | } | |
257 | return SIM_RC_OK; | |
258 | /* end-sanitize-sky */ | |
50a2a691 AC |
259 | } |
260 | ||
261 | return SIM_RC_OK; | |
2e61a3ad | 262 | } |
50a2a691 AC |
263 | |
264 | static const OPTION mips_options[] = | |
2e61a3ad | 265 | { |
22de994d AC |
266 | { {"dinero-trace", optional_argument, NULL, OPTION_DINERO_TRACE}, |
267 | '\0', "on|off", "Enable dinero tracing", | |
50a2a691 | 268 | mips_option_handler }, |
22de994d AC |
269 | { {"dinero-file", required_argument, NULL, OPTION_DINERO_FILE}, |
270 | '\0', "FILE", "Write dinero trace to FILE", | |
50a2a691 | 271 | mips_option_handler }, |
1ff39ecb JL |
272 | /* start-sanitize-sky */ |
273 | { {"float-type", required_argument, NULL, OPTION_FLOAT_TYPE}, | |
274 | '\0', "host|target", "Use host (fast) or target (accurate) floating point", | |
275 | mips_option_handler }, | |
276 | /* end-sanitize-sky */ | |
50a2a691 AC |
277 | { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL } |
278 | }; | |
279 | ||
280 | ||
56e7c849 AC |
281 | int interrupt_pending; |
282 | ||
50a2a691 AC |
283 | static void |
284 | interrupt_event (SIM_DESC sd, void *data) | |
2e61a3ad | 285 | { |
01737f42 | 286 | sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */ |
56e7c849 AC |
287 | if (SR & status_IE) |
288 | { | |
289 | interrupt_pending = 0; | |
18c64df6 | 290 | SignalExceptionInterrupt (); |
56e7c849 AC |
291 | } |
292 | else if (!interrupt_pending) | |
293 | sim_events_schedule (sd, 1, interrupt_event, data); | |
2e61a3ad | 294 | } |
f7481d45 | 295 | |
f7481d45 | 296 | |
2c88fae9 IC |
297 | /*---------------------------------------------------------------------------*/ |
298 | /*-- Device registration hook -----------------------------------------------*/ | |
299 | /*---------------------------------------------------------------------------*/ | |
97908603 | 300 | static void device_init(SIM_DESC sd) { |
2c88fae9 IC |
301 | #ifdef DEVICE_INIT |
302 | extern void register_devices(SIM_DESC); | |
303 | register_devices(sd); | |
304 | #endif | |
305 | } | |
50a2a691 | 306 | |
8bae0a0c JSC |
307 | /*---------------------------------------------------------------------------*/ |
308 | /*-- GDB simulator interface ------------------------------------------------*/ | |
309 | /*---------------------------------------------------------------------------*/ | |
310 | ||
53b9417e | 311 | SIM_DESC |
247fccde | 312 | sim_open (kind, cb, abfd, argv) |
87e43259 | 313 | SIM_OPEN_KIND kind; |
50a2a691 | 314 | host_callback *cb; |
247fccde | 315 | struct _bfd *abfd; |
53b9417e | 316 | char **argv; |
8bae0a0c | 317 | { |
18c64df6 | 318 | SIM_DESC sd = sim_state_alloc (kind, cb); |
01737f42 | 319 | sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */ |
2e61a3ad | 320 | |
525d929e AC |
321 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
322 | ||
50a2a691 AC |
323 | /* FIXME: watchpoints code shouldn't need this */ |
324 | STATE_WATCHPOINTS (sd)->pc = &(PC); | |
325 | STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC); | |
326 | STATE_WATCHPOINTS (sd)->interrupt_handler = interrupt_event; | |
327 | ||
0c2c5f61 | 328 | STATE = 0; |
50a2a691 | 329 | |
2e61a3ad AC |
330 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) |
331 | return 0; | |
7c5d88c1 | 332 | sim_add_option_table (sd, NULL, mips_options); |
2e61a3ad | 333 | |
63be8feb AC |
334 | /* Allocate core managed memory */ |
335 | ||
336 | /* the monitor */ | |
337 | sim_do_commandf (sd, "memory region 0x%lx,0x%lx", MONITOR_BASE, MONITOR_SIZE); | |
338 | /* For compatibility with the old code - under this (at level one) | |
339 | are the kernel spaces K0 & K1. Both of these map to a single | |
340 | smaller sub region */ | |
a48e8c8d | 341 | sim_do_command(sd," memory region 0x7fff8000,0x8000") ; /* MTZ- 32 k stack */ |
fd909089 FCE |
342 | /* start-sanitize-sky */ |
343 | #ifndef TARGET_SKY | |
344 | /* end-sanitize-sky */ | |
63be8feb AC |
345 | sim_do_commandf (sd, "memory alias 0x%lx@1,0x%lx%%0x%lx,0x%0x", |
346 | K1BASE, K0SIZE, | |
347 | MEM_SIZE, /* actual size */ | |
348 | K0BASE); | |
fd909089 FCE |
349 | /* start-sanitize-sky */ |
350 | #else | |
351 | sim_do_commandf (sd, "memory alias 0x%lx@1,0x%lx%%0x%lx,0x%0x,0x%0x", | |
352 | K1BASE, K0SIZE, | |
353 | MEM_SIZE, /* actual size */ | |
354 | K0BASE, | |
355 | 0); /* add alias at 0x0000 */ | |
9ce23bf9 | 356 | #endif |
fd909089 | 357 | /* end-sanitize-sky */ |
63be8feb | 358 | |
2c88fae9 IC |
359 | device_init(sd); |
360 | ||
2e61a3ad AC |
361 | /* getopt will print the error message so we just have to exit if this fails. |
362 | FIXME: Hmmm... in the case of gdb we need getopt to call | |
363 | print_filtered. */ | |
364 | if (sim_parse_args (sd, argv) != SIM_RC_OK) | |
365 | { | |
366 | /* Uninstall the modules to avoid memory leaks, | |
367 | file descriptor leaks, etc. */ | |
368 | sim_module_uninstall (sd); | |
369 | return 0; | |
370 | } | |
2e61a3ad | 371 | |
fafce69a AC |
372 | /* check for/establish the a reference program image */ |
373 | if (sim_analyze_program (sd, | |
374 | (STATE_PROG_ARGV (sd) != NULL | |
375 | ? *STATE_PROG_ARGV (sd) | |
376 | : NULL), | |
377 | abfd) != SIM_RC_OK) | |
378 | { | |
379 | sim_module_uninstall (sd); | |
380 | return 0; | |
381 | } | |
382 | ||
247fccde AC |
383 | /* Configure/verify the target byte order and other runtime |
384 | configuration options */ | |
fafce69a | 385 | if (sim_config (sd) != SIM_RC_OK) |
247fccde AC |
386 | { |
387 | sim_module_uninstall (sd); | |
388 | return 0; | |
389 | } | |
390 | ||
2e61a3ad AC |
391 | if (sim_post_argv_init (sd) != SIM_RC_OK) |
392 | { | |
393 | /* Uninstall the modules to avoid memory leaks, | |
394 | file descriptor leaks, etc. */ | |
395 | sim_module_uninstall (sd); | |
396 | return 0; | |
397 | } | |
398 | ||
50a2a691 AC |
399 | /* verify assumptions the simulator made about the host type system. |
400 | This macro does not return if there is a problem */ | |
7ce8b917 AC |
401 | SIM_ASSERT (sizeof(int) == (4 * sizeof(char))); |
402 | SIM_ASSERT (sizeof(word64) == (8 * sizeof(char))); | |
8bae0a0c | 403 | |
8bae0a0c JSC |
404 | /* This is NASTY, in that we are assuming the size of specific |
405 | registers: */ | |
406 | { | |
407 | int rn; | |
a97f304b AC |
408 | for (rn = 0; (rn < (LAST_EMBED_REGNUM + 1)); rn++) |
409 | { | |
410 | if (rn < 32) | |
411 | cpu->register_widths[rn] = WITH_TARGET_WORD_BITSIZE; | |
412 | else if ((rn >= FGRIDX) && (rn < (FGRIDX + NR_FGR))) | |
413 | cpu->register_widths[rn] = WITH_TARGET_FLOATING_POINT_BITSIZE; | |
414 | else if ((rn >= 33) && (rn <= 37)) | |
415 | cpu->register_widths[rn] = WITH_TARGET_WORD_BITSIZE; | |
a48e8c8d AC |
416 | else if ((rn == SRIDX) |
417 | || (rn == FCR0IDX) | |
418 | || (rn == FCR31IDX) | |
419 | || ((rn >= 72) && (rn <= 89))) | |
a97f304b AC |
420 | cpu->register_widths[rn] = 32; |
421 | else | |
422 | cpu->register_widths[rn] = 0; | |
423 | } | |
18c64df6 AC |
424 | /* start-sanitize-r5900 */ |
425 | ||
426 | /* set the 5900 "upper" registers to 64 bits */ | |
427 | for( rn = LAST_EMBED_REGNUM+1; rn < NUM_REGS; rn++) | |
0c2c5f61 | 428 | cpu->register_widths[rn] = 64; |
18c64df6 | 429 | /* end-sanitize-r5900 */ |
97908603 RU |
430 | |
431 | /* start-sanitize-sky */ | |
432 | #ifdef TARGET_SKY | |
433 | /* Now the VU registers */ | |
a859684b | 434 | for( rn = 0; rn < NUM_VU_INTEGER_REGS; rn++ ) { |
97908603 RU |
435 | cpu->register_widths[rn + NUM_R5900_REGS] = 16; |
436 | cpu->register_widths[rn + NUM_R5900_REGS + NUM_VU_REGS] = 16; | |
97908603 RU |
437 | } |
438 | ||
a859684b | 439 | for( rn = NUM_VU_INTEGER_REGS; rn < NUM_VU_REGS; rn++ ) { |
97908603 RU |
440 | cpu->register_widths[rn + NUM_R5900_REGS] = 32; |
441 | cpu->register_widths[rn + NUM_R5900_REGS + NUM_VU_REGS] = 32; | |
97908603 | 442 | } |
64ed8b6a AC |
443 | |
444 | /* Finally the VIF registers */ | |
445 | for( rn = 2*NUM_VU_REGS; rn < 2*NUM_VU_REGS + 2*NUM_VIF_REGS; rn++ ) | |
446 | cpu->register_widths[rn + NUM_R5900_REGS] = 32; | |
97908603 RU |
447 | #endif |
448 | /* end-sanitize-sky */ | |
8bae0a0c JSC |
449 | } |
450 | ||
8bae0a0c | 451 | #if defined(TRACE) |
0c2c5f61 | 452 | if (STATE & simTRACE) |
18c64df6 | 453 | open_trace(sd); |
8bae0a0c JSC |
454 | #endif /* TRACE */ |
455 | ||
fafce69a AC |
456 | /* Write the monitor trap address handlers into the monitor (eeprom) |
457 | address space. This can only be done once the target endianness | |
458 | has been determined. */ | |
459 | { | |
460 | unsigned loop; | |
461 | /* Entry into the IDT monitor is via fixed address vectors, and | |
462 | not using machine instructions. To avoid clashing with use of | |
463 | the MIPS TRAP system, we place our own (simulator specific) | |
464 | "undefined" instructions into the relevant vector slots. */ | |
525d929e AC |
465 | for (loop = 0; (loop < MONITOR_SIZE); loop += 4) |
466 | { | |
467 | address_word vaddr = (MONITOR_BASE + loop); | |
468 | unsigned32 insn = (RSVD_INSTRUCTION | (((loop >> 2) & RSVD_INSTRUCTION_ARG_MASK) << RSVD_INSTRUCTION_ARG_SHIFT)); | |
469 | H2T (insn); | |
470 | sim_write (sd, vaddr, (char *)&insn, sizeof (insn)); | |
471 | } | |
fafce69a AC |
472 | /* The PMON monitor uses the same address space, but rather than |
473 | branching into it the address of a routine is loaded. We can | |
474 | cheat for the moment, and direct the PMON routine to IDT style | |
475 | instructions within the monitor space. This relies on the IDT | |
476 | monitor not using the locations from 0xBFC00500 onwards as its | |
477 | entry points.*/ | |
478 | for (loop = 0; (loop < 24); loop++) | |
479 | { | |
525d929e AC |
480 | address_word vaddr = (MONITOR_BASE + 0x500 + (loop * 4)); |
481 | unsigned32 value = ((0x500 - 8) / 8); /* default UNDEFINED reason code */ | |
fafce69a AC |
482 | switch (loop) |
483 | { | |
484 | case 0: /* read */ | |
485 | value = 7; | |
486 | break; | |
fafce69a AC |
487 | case 1: /* write */ |
488 | value = 8; | |
489 | break; | |
fafce69a AC |
490 | case 2: /* open */ |
491 | value = 6; | |
492 | break; | |
fafce69a AC |
493 | case 3: /* close */ |
494 | value = 10; | |
495 | break; | |
fafce69a AC |
496 | case 5: /* printf */ |
497 | value = ((0x500 - 16) / 8); /* not an IDT reason code */ | |
498 | break; | |
fafce69a AC |
499 | case 8: /* cliexit */ |
500 | value = 17; | |
501 | break; | |
fafce69a AC |
502 | case 11: /* flush_cache */ |
503 | value = 28; | |
504 | break; | |
505 | } | |
525d929e AC |
506 | /* FIXME - should monitor_base be SIM_ADDR?? */ |
507 | value = ((unsigned int)MONITOR_BASE + (value * 8)); | |
508 | H2T (value); | |
509 | sim_write (sd, vaddr, (char *)&value, sizeof (value)); | |
fafce69a AC |
510 | |
511 | /* The LSI MiniRISC PMON has its vectors at 0x200, not 0x500. */ | |
512 | vaddr -= 0x300; | |
525d929e | 513 | sim_write (sd, vaddr, (char *)&value, sizeof (value)); |
fafce69a AC |
514 | } |
515 | } | |
516 | ||
2e61a3ad | 517 | return sd; |
8bae0a0c JSC |
518 | } |
519 | ||
6429b296 JW |
520 | #if defined(TRACE) |
521 | static void | |
18c64df6 AC |
522 | open_trace(sd) |
523 | SIM_DESC sd; | |
6429b296 JW |
524 | { |
525 | tracefh = fopen(tracefile,"wb+"); | |
526 | if (tracefh == NULL) | |
527 | { | |
18c64df6 | 528 | sim_io_eprintf(sd,"Failed to create file \"%s\", writing trace information to stderr.\n",tracefile); |
6429b296 JW |
529 | tracefh = stderr; |
530 | } | |
531 | } | |
532 | #endif /* TRACE */ | |
533 | ||
8bae0a0c | 534 | void |
53b9417e DE |
535 | sim_close (sd, quitting) |
536 | SIM_DESC sd; | |
8bae0a0c JSC |
537 | int quitting; |
538 | { | |
539 | #ifdef DEBUG | |
540 | printf("DBG: sim_close: entered (quitting = %d)\n",quitting); | |
541 | #endif | |
542 | ||
8bae0a0c JSC |
543 | /* "quitting" is non-zero if we cannot hang on errors */ |
544 | ||
545 | /* Ensure that any resources allocated through the callback | |
546 | mechanism are released: */ | |
18c64df6 | 547 | sim_io_shutdown (sd); |
8bae0a0c | 548 | |
8bae0a0c | 549 | #if defined(TRACE) |
e3d12c65 | 550 | if (tracefh != NULL && tracefh != stderr) |
8bae0a0c | 551 | fclose(tracefh); |
e3d12c65 | 552 | tracefh = NULL; |
8bae0a0c JSC |
553 | #endif /* TRACE */ |
554 | ||
01737f42 AC |
555 | /* FIXME - free SD */ |
556 | ||
8bae0a0c JSC |
557 | return; |
558 | } | |
559 | ||
8bae0a0c JSC |
560 | |
561 | int | |
53b9417e DE |
562 | sim_write (sd,addr,buffer,size) |
563 | SIM_DESC sd; | |
8bae0a0c JSC |
564 | SIM_ADDR addr; |
565 | unsigned char *buffer; | |
566 | int size; | |
567 | { | |
525d929e | 568 | int index; |
01737f42 | 569 | sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */ |
8bae0a0c JSC |
570 | |
571 | /* Return the number of bytes written, or zero if error. */ | |
572 | #ifdef DEBUG | |
18c64df6 | 573 | sim_io_printf(sd,"sim_write(0x%s,buffer,%d);\n",pr_addr(addr),size); |
8bae0a0c JSC |
574 | #endif |
575 | ||
525d929e AC |
576 | /* We use raw read and write routines, since we do not want to count |
577 | the GDB memory accesses in our statistics gathering. */ | |
578 | ||
579 | for (index = 0; index < size; index++) | |
580 | { | |
581 | address_word vaddr = (address_word)addr + index; | |
582 | address_word paddr; | |
583 | int cca; | |
01737f42 | 584 | if (!address_translation (SD, CPU, NULL_CIA, vaddr, isDATA, isSTORE, &paddr, &cca, isRAW)) |
525d929e | 585 | break; |
82ea14fd | 586 | if (sim_core_write_buffer (SD, CPU, read_map, buffer + index, paddr, 1) != 1) |
63be8feb | 587 | break; |
8bae0a0c | 588 | } |
8bae0a0c | 589 | |
525d929e | 590 | return(index); |
8bae0a0c JSC |
591 | } |
592 | ||
593 | int | |
53b9417e DE |
594 | sim_read (sd,addr,buffer,size) |
595 | SIM_DESC sd; | |
8bae0a0c JSC |
596 | SIM_ADDR addr; |
597 | unsigned char *buffer; | |
598 | int size; | |
599 | { | |
600 | int index; | |
01737f42 | 601 | sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */ |
8bae0a0c JSC |
602 | |
603 | /* Return the number of bytes read, or zero if error. */ | |
604 | #ifdef DEBUG | |
18c64df6 | 605 | sim_io_printf(sd,"sim_read(0x%s,buffer,%d);\n",pr_addr(addr),size); |
8bae0a0c JSC |
606 | #endif /* DEBUG */ |
607 | ||
525d929e AC |
608 | for (index = 0; (index < size); index++) |
609 | { | |
610 | address_word vaddr = (address_word)addr + index; | |
611 | address_word paddr; | |
525d929e | 612 | int cca; |
01737f42 | 613 | if (!address_translation (SD, CPU, NULL_CIA, vaddr, isDATA, isLOAD, &paddr, &cca, isRAW)) |
525d929e | 614 | break; |
82ea14fd | 615 | if (sim_core_read_buffer (SD, CPU, read_map, buffer + index, paddr, 1) != 1) |
63be8feb | 616 | break; |
525d929e | 617 | } |
8bae0a0c JSC |
618 | |
619 | return(index); | |
620 | } | |
621 | ||
f319bab2 GRK |
622 | int |
623 | sim_store_register (sd,rn,memory,length) | |
53b9417e | 624 | SIM_DESC sd; |
8bae0a0c JSC |
625 | int rn; |
626 | unsigned char *memory; | |
f319bab2 | 627 | int length; |
8bae0a0c | 628 | { |
01737f42 | 629 | sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */ |
50a2a691 AC |
630 | /* NOTE: gdb (the client) stores registers in target byte order |
631 | while the simulator uses host byte order */ | |
8bae0a0c | 632 | #ifdef DEBUG |
18c64df6 | 633 | sim_io_printf(sd,"sim_store_register(%d,*memory=0x%s);\n",rn,pr_addr(*((SIM_ADDR *)memory))); |
8bae0a0c JSC |
634 | #endif /* DEBUG */ |
635 | ||
636 | /* Unfortunately this suffers from the same problem as the register | |
637 | numbering one. We need to know what the width of each logical | |
638 | register number is for the architecture being simulated. */ | |
50a2a691 | 639 | |
0c2c5f61 | 640 | if (cpu->register_widths[rn] == 0) |
a48e8c8d AC |
641 | { |
642 | sim_io_eprintf(sd,"Invalid register width for %d (register store ignored)\n",rn); | |
643 | return 0; | |
644 | } | |
645 | ||
646 | /* start-sanitize-r5900 */ | |
647 | if (rn >= 90 && rn < 90 + 32) | |
648 | { | |
649 | GPR1[rn - 90] = T2H_8 (*(unsigned64*)memory); | |
650 | return 8; | |
651 | } | |
652 | switch (rn) | |
653 | { | |
654 | case REGISTER_SA: | |
655 | SA = T2H_8(*(unsigned64*)memory); | |
656 | return 8; | |
657 | case 122: /* FIXME */ | |
658 | LO1 = T2H_8(*(unsigned64*)memory); | |
659 | return 8; | |
660 | case 123: /* FIXME */ | |
661 | HI1 = T2H_8(*(unsigned64*)memory); | |
662 | return 8; | |
663 | } | |
a48e8c8d | 664 | /* end-sanitize-r5900 */ |
ce4713dc | 665 | |
97908603 RU |
666 | /* start-sanitize-sky */ |
667 | #ifdef TARGET_SKY | |
a859684b | 668 | if (rn >= NUM_R5900_REGS) |
ce4713dc RU |
669 | { |
670 | rn = rn - NUM_R5900_REGS; | |
97908603 | 671 | |
64ed8b6a | 672 | if( rn < NUM_VU_REGS ) |
2151467d | 673 | { |
64ed8b6a | 674 | if (rn < NUM_VU_INTEGER_REGS) |
ebcfd86a | 675 | return write_vu_int_reg (&(vu0_device.regs), rn, memory); |
64ed8b6a | 676 | else if (rn >= FIRST_VEC_REG) |
2151467d RU |
677 | { |
678 | rn -= FIRST_VEC_REG; | |
ebcfd86a | 679 | return write_vu_vec_reg (&(vu0_device.regs), rn>>2, rn&3, |
64ed8b6a | 680 | memory); |
2151467d RU |
681 | } |
682 | else switch (rn - NUM_VU_INTEGER_REGS) | |
683 | { | |
684 | case 0: | |
ebcfd86a | 685 | return write_vu_special_reg (&vu0_device, VU_REG_CIA, |
64ed8b6a | 686 | memory); |
2151467d | 687 | case 1: |
ebcfd86a | 688 | return write_vu_misc_reg (&(vu0_device.regs), VU_REG_MR, |
64ed8b6a | 689 | memory); |
2151467d | 690 | case 2: /* VU0 has no P register */ |
64ed8b6a | 691 | return 4; |
2151467d | 692 | case 3: |
ebcfd86a | 693 | return write_vu_misc_reg (&(vu0_device.regs), VU_REG_MI, |
64ed8b6a | 694 | memory); |
2151467d | 695 | case 4: |
ebcfd86a | 696 | return write_vu_misc_reg (&(vu0_device.regs), VU_REG_MQ, |
64ed8b6a | 697 | memory); |
2151467d | 698 | default: |
ebcfd86a | 699 | return write_vu_acc_reg (&(vu0_device.regs), |
2151467d RU |
700 | rn - (NUM_VU_INTEGER_REGS + 5), |
701 | memory); | |
2151467d RU |
702 | } |
703 | } | |
ce4713dc | 704 | |
64ed8b6a AC |
705 | rn = rn - NUM_VU_REGS; |
706 | ||
707 | if (rn < NUM_VU_REGS) | |
708 | { | |
709 | if (rn < NUM_VU_INTEGER_REGS) | |
ebcfd86a | 710 | return write_vu_int_reg (&(vu1_device.regs), rn, memory); |
64ed8b6a AC |
711 | else if (rn >= FIRST_VEC_REG) |
712 | { | |
713 | rn -= FIRST_VEC_REG; | |
ebcfd86a | 714 | return write_vu_vec_reg (&(vu1_device.regs), |
64ed8b6a AC |
715 | rn >> 2, rn & 3, memory); |
716 | } | |
717 | else switch (rn - NUM_VU_INTEGER_REGS) | |
718 | { | |
719 | case 0: | |
ebcfd86a | 720 | return write_vu_special_reg (&vu1_device, VU_REG_CIA, |
64ed8b6a AC |
721 | memory); |
722 | case 1: | |
ebcfd86a | 723 | return write_vu_misc_reg (&(vu1_device.regs), VU_REG_MR, |
2151467d | 724 | memory); |
64ed8b6a | 725 | case 2: |
ebcfd86a | 726 | return write_vu_misc_reg (&(vu1_device.regs), VU_REG_MP, |
64ed8b6a AC |
727 | memory); |
728 | case 3: | |
ebcfd86a | 729 | return write_vu_misc_reg (&(vu1_device.regs), VU_REG_MI, |
64ed8b6a AC |
730 | memory); |
731 | case 4: | |
ebcfd86a | 732 | return write_vu_misc_reg (&(vu1_device.regs), VU_REG_MQ, |
64ed8b6a AC |
733 | memory); |
734 | default: | |
ebcfd86a | 735 | return write_vu_acc_reg (&(vu1_device.regs), |
64ed8b6a AC |
736 | rn - (NUM_VU_INTEGER_REGS + 5), |
737 | memory); | |
738 | } | |
739 | } | |
a859684b | 740 | |
64ed8b6a AC |
741 | rn -= NUM_VU_REGS; /* VIF0 registers are next */ |
742 | ||
743 | if (rn < NUM_VIF_REGS) | |
744 | { | |
745 | if (rn < NUM_VIF_REGS-1) | |
746 | return write_pke_reg (&pke0_device, rn, memory); | |
747 | else | |
748 | { | |
749 | sim_io_eprintf( sd, "Can't write vif0_pc (store ignored)\n" ); | |
750 | return 0; | |
751 | } | |
752 | } | |
753 | ||
754 | rn -= NUM_VIF_REGS; /* VIF1 registers are last */ | |
755 | ||
756 | if (rn < NUM_VIF_REGS) | |
757 | { | |
758 | if (rn < NUM_VIF_REGS-1) | |
759 | return write_pke_reg (&pke1_device, rn, memory); | |
760 | else | |
761 | { | |
762 | sim_io_eprintf( sd, "Can't write vif1_pc (store ignored)\n" ); | |
763 | return 0; | |
764 | } | |
765 | } | |
766 | ||
767 | sim_io_eprintf( sd, "Invalid VU register (register store ignored)\n" ); | |
768 | return 0; | |
97908603 | 769 | } |
97908603 RU |
770 | #endif |
771 | /* end-sanitize-sky */ | |
a48e8c8d AC |
772 | |
773 | if (rn >= FGRIDX && rn < FGRIDX + NR_FGR) | |
a97f304b AC |
774 | { |
775 | if (cpu->register_widths[rn] == 32) | |
a48e8c8d AC |
776 | { |
777 | cpu->fgr[rn - FGRIDX] = T2H_4 (*(unsigned32*)memory); | |
778 | return 4; | |
779 | } | |
a97f304b | 780 | else |
a48e8c8d AC |
781 | { |
782 | cpu->fgr[rn - FGRIDX] = T2H_8 (*(unsigned64*)memory); | |
783 | return 8; | |
784 | } | |
a97f304b | 785 | } |
8bae0a0c | 786 | |
a48e8c8d AC |
787 | if (cpu->register_widths[rn] == 32) |
788 | { | |
789 | cpu->registers[rn] = T2H_4 (*(unsigned32*)memory); | |
790 | return 4; | |
791 | } | |
792 | else | |
793 | { | |
794 | cpu->registers[rn] = T2H_8 (*(unsigned64*)memory); | |
795 | return 8; | |
796 | } | |
64ed8b6a AC |
797 | |
798 | return 0; | |
8bae0a0c JSC |
799 | } |
800 | ||
f319bab2 GRK |
801 | int |
802 | sim_fetch_register (sd,rn,memory,length) | |
53b9417e | 803 | SIM_DESC sd; |
8bae0a0c JSC |
804 | int rn; |
805 | unsigned char *memory; | |
f319bab2 | 806 | int length; |
8bae0a0c | 807 | { |
01737f42 | 808 | sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */ |
50a2a691 AC |
809 | /* NOTE: gdb (the client) stores registers in target byte order |
810 | while the simulator uses host byte order */ | |
8bae0a0c | 811 | #ifdef DEBUG |
18c64df6 | 812 | sim_io_printf(sd,"sim_fetch_register(%d=0x%s,mem) : place simulator registers into memory\n",rn,pr_addr(registers[rn])); |
8bae0a0c JSC |
813 | #endif /* DEBUG */ |
814 | ||
0c2c5f61 | 815 | if (cpu->register_widths[rn] == 0) |
a48e8c8d AC |
816 | { |
817 | sim_io_eprintf (sd, "Invalid register width for %d (register fetch ignored)\n",rn); | |
818 | return 0; | |
819 | } | |
820 | ||
821 | /* start-sanitize-r5900 */ | |
822 | if (rn >= 90 && rn < 90 + 32) | |
823 | { | |
824 | *(unsigned64*)memory = GPR1[rn - 90]; | |
825 | return 8; | |
826 | } | |
827 | switch (rn) | |
828 | { | |
829 | case REGISTER_SA: | |
830 | *((unsigned64*)memory) = H2T_8(SA); | |
831 | return 8; | |
832 | case 122: /* FIXME */ | |
833 | *((unsigned64*)memory) = H2T_8(LO1); | |
834 | return 8; | |
835 | case 123: /* FIXME */ | |
836 | *((unsigned64*)memory) = H2T_8(HI1); | |
837 | return 8; | |
838 | } | |
a48e8c8d | 839 | /* end-sanitize-r5900 */ |
ce4713dc | 840 | |
97908603 RU |
841 | /* start-sanitize-sky */ |
842 | #ifdef TARGET_SKY | |
a859684b | 843 | if (rn >= NUM_R5900_REGS) |
ce4713dc RU |
844 | { |
845 | rn = rn - NUM_R5900_REGS; | |
97908603 | 846 | |
64ed8b6a | 847 | if (rn < NUM_VU_REGS) |
2151467d | 848 | { |
64ed8b6a | 849 | if (rn < NUM_VU_INTEGER_REGS) |
ebcfd86a | 850 | return read_vu_int_reg (&(vu0_device.regs), rn, memory); |
64ed8b6a | 851 | else if (rn >= FIRST_VEC_REG) |
2151467d RU |
852 | { |
853 | rn -= FIRST_VEC_REG; | |
ebcfd86a | 854 | return read_vu_vec_reg (&(vu0_device.regs), rn>>2, rn & 3, |
2151467d RU |
855 | memory); |
856 | } | |
857 | else switch (rn - NUM_VU_INTEGER_REGS) | |
858 | { | |
859 | case 0: | |
ebcfd86a | 860 | return read_vu_special_reg(&vu0_device, VU_REG_CIA, memory); |
2151467d | 861 | case 1: |
ebcfd86a | 862 | return read_vu_misc_reg (&(vu0_device.regs), VU_REG_MR, |
2151467d | 863 | memory); |
2151467d | 864 | case 2: /* VU0 has no P register */ |
64ed8b6a AC |
865 | *((int *) memory) = 0; |
866 | return 4; | |
2151467d | 867 | case 3: |
ebcfd86a | 868 | return read_vu_misc_reg (&(vu0_device.regs), VU_REG_MI, |
2151467d | 869 | memory); |
2151467d | 870 | case 4: |
ebcfd86a | 871 | return read_vu_misc_reg (&(vu0_device.regs), VU_REG_MQ, |
2151467d | 872 | memory); |
2151467d | 873 | default: |
ebcfd86a | 874 | return read_vu_acc_reg (&(vu0_device.regs), |
2151467d RU |
875 | rn - (NUM_VU_INTEGER_REGS + 5), |
876 | memory); | |
2151467d RU |
877 | } |
878 | } | |
64ed8b6a AC |
879 | |
880 | rn -= NUM_VU_REGS; /* VU1 registers are next */ | |
881 | ||
882 | if (rn < NUM_VU_REGS) | |
a859684b | 883 | { |
a859684b | 884 | if (rn < NUM_VU_INTEGER_REGS) |
ebcfd86a | 885 | return read_vu_int_reg (&(vu1_device.regs), rn, memory); |
64ed8b6a | 886 | else if (rn >= FIRST_VEC_REG) |
2151467d | 887 | { |
64ed8b6a | 888 | rn -= FIRST_VEC_REG; |
ebcfd86a | 889 | return read_vu_vec_reg (&(vu1_device.regs), |
64ed8b6a | 890 | rn >> 2, rn & 3, memory); |
2151467d | 891 | } |
64ed8b6a AC |
892 | else switch (rn - NUM_VU_INTEGER_REGS) |
893 | { | |
894 | case 0: | |
ebcfd86a | 895 | return read_vu_special_reg(&vu1_device, VU_REG_CIA, memory); |
64ed8b6a | 896 | case 1: |
ebcfd86a | 897 | return read_vu_misc_reg (&(vu1_device.regs), |
64ed8b6a AC |
898 | VU_REG_MR, memory); |
899 | case 2: | |
ebcfd86a | 900 | return read_vu_misc_reg (&(vu1_device.regs), |
64ed8b6a AC |
901 | VU_REG_MP, memory); |
902 | case 3: | |
ebcfd86a | 903 | return read_vu_misc_reg (&(vu1_device.regs), |
64ed8b6a AC |
904 | VU_REG_MI, memory); |
905 | case 4: | |
ebcfd86a | 906 | return read_vu_misc_reg (&(vu1_device.regs), |
64ed8b6a AC |
907 | VU_REG_MQ, memory); |
908 | default: | |
ebcfd86a | 909 | return read_vu_acc_reg (&(vu1_device.regs), |
64ed8b6a AC |
910 | rn - (NUM_VU_INTEGER_REGS + 5), |
911 | memory); | |
912 | } | |
913 | } | |
914 | ||
915 | rn -= NUM_VU_REGS; /* VIF0 registers are next */ | |
916 | ||
917 | if (rn < NUM_VIF_REGS) | |
918 | { | |
919 | if (rn < NUM_VIF_REGS-1) | |
920 | return read_pke_reg (&pke0_device, rn, memory); | |
a859684b | 921 | else |
64ed8b6a | 922 | return read_pke_pc (&pke0_device, memory); |
a859684b RU |
923 | } |
924 | ||
64ed8b6a AC |
925 | rn -= NUM_VIF_REGS; /* VIF1 registers are last */ |
926 | ||
927 | if (rn < NUM_VIF_REGS) | |
928 | { | |
929 | if (rn < NUM_VIF_REGS-1) | |
930 | return read_pke_reg (&pke1_device, rn, memory); | |
931 | else | |
932 | return read_pke_pc (&pke1_device, memory); | |
933 | } | |
934 | ||
935 | sim_io_eprintf( sd, "Invalid VU register (register fetch ignored)\n" ); | |
97908603 | 936 | } |
97908603 RU |
937 | #endif |
938 | /* end-sanitize-sky */ | |
a48e8c8d AC |
939 | |
940 | /* Any floating point register */ | |
941 | if (rn >= FGRIDX && rn < FGRIDX + NR_FGR) | |
a97f304b AC |
942 | { |
943 | if (cpu->register_widths[rn] == 32) | |
a48e8c8d AC |
944 | { |
945 | *(unsigned32*)memory = H2T_4 (cpu->fgr[rn - FGRIDX]); | |
946 | return 4; | |
947 | } | |
a97f304b | 948 | else |
a48e8c8d AC |
949 | { |
950 | *(unsigned64*)memory = H2T_8 (cpu->fgr[rn - FGRIDX]); | |
951 | return 8; | |
952 | } | |
a97f304b | 953 | } |
50a2a691 | 954 | |
a48e8c8d AC |
955 | if (cpu->register_widths[rn] == 32) |
956 | { | |
957 | *(unsigned32*)memory = H2T_4 ((unsigned32)(cpu->registers[rn])); | |
958 | return 4; | |
959 | } | |
960 | else | |
961 | { | |
962 | *(unsigned64*)memory = H2T_8 ((unsigned64)(cpu->registers[rn])); | |
963 | return 8; | |
964 | } | |
64ed8b6a AC |
965 | |
966 | return 0; | |
8bae0a0c | 967 | } |
50a2a691 | 968 | |
8bae0a0c | 969 | |
9d52bcb7 | 970 | SIM_RC |
fafce69a | 971 | sim_create_inferior (sd, abfd, argv,env) |
53b9417e | 972 | SIM_DESC sd; |
fafce69a | 973 | struct _bfd *abfd; |
8bae0a0c JSC |
974 | char **argv; |
975 | char **env; | |
976 | { | |
50a2a691 | 977 | |
8bae0a0c | 978 | #ifdef DEBUG |
9d52bcb7 DE |
979 | printf("DBG: sim_create_inferior entered: start_address = 0x%s\n", |
980 | pr_addr(PC)); | |
8bae0a0c JSC |
981 | #endif /* DEBUG */ |
982 | ||
0c2c5f61 | 983 | ColdReset(sd); |
50a2a691 | 984 | |
fafce69a | 985 | if (abfd != NULL) |
01737f42 AC |
986 | { |
987 | /* override PC value set by ColdReset () */ | |
988 | int cpu_nr; | |
989 | for (cpu_nr = 0; cpu_nr < sim_engine_nr_cpus (sd); cpu_nr++) | |
990 | { | |
991 | sim_cpu *cpu = STATE_CPU (sd, cpu_nr); | |
992 | CIA_SET (cpu, (unsigned64) bfd_get_start_address (abfd)); | |
993 | } | |
994 | } | |
2e61a3ad | 995 | |
f24b7b69 | 996 | #if 0 /* def DEBUG */ |
dad6f1f3 | 997 | if (argv || env) |
8bae0a0c | 998 | { |
dad6f1f3 AC |
999 | /* We should really place the argv slot values into the argument |
1000 | registers, and onto the stack as required. However, this | |
1001 | assumes that we have a stack defined, which is not | |
1002 | necessarily true at the moment. */ | |
1003 | char **cptr; | |
1004 | sim_io_printf(sd,"sim_create_inferior() : passed arguments ignored\n"); | |
1005 | for (cptr = argv; (cptr && *cptr); cptr++) | |
1006 | printf("DBG: arg \"%s\"\n",*cptr); | |
8bae0a0c JSC |
1007 | } |
1008 | #endif /* DEBUG */ | |
8bae0a0c | 1009 | |
9d52bcb7 | 1010 | return SIM_RC_OK; |
8bae0a0c JSC |
1011 | } |
1012 | ||
8bae0a0c | 1013 | void |
53b9417e DE |
1014 | sim_do_command (sd,cmd) |
1015 | SIM_DESC sd; | |
8bae0a0c JSC |
1016 | char *cmd; |
1017 | { | |
63be8feb AC |
1018 | if (sim_args_command (sd, cmd) != SIM_RC_OK) |
1019 | sim_io_printf (sd, "Error: \"%s\" is not a valid MIPS simulator command.\n", | |
1020 | cmd); | |
8bae0a0c JSC |
1021 | } |
1022 | ||
8bae0a0c JSC |
1023 | /*---------------------------------------------------------------------------*/ |
1024 | /*-- Private simulator support interface ------------------------------------*/ | |
1025 | /*---------------------------------------------------------------------------*/ | |
1026 | ||
525d929e AC |
1027 | /* Read a null terminated string from memory, return in a buffer */ |
1028 | static char * | |
1029 | fetch_str (sd, addr) | |
1030 | SIM_DESC sd; | |
1031 | address_word addr; | |
1032 | { | |
1033 | char *buf; | |
1034 | int nr = 0; | |
1035 | char null; | |
1036 | while (sim_read (sd, addr + nr, &null, 1) == 1 && null != 0) | |
1037 | nr++; | |
1038 | buf = NZALLOC (char, nr + 1); | |
1039 | sim_read (sd, addr, buf, nr); | |
1040 | return buf; | |
1041 | } | |
1042 | ||
a9f7253f | 1043 | /* Simple monitor interface (currently setup for the IDT and PMON monitors) */ |
8bae0a0c | 1044 | static void |
01737f42 AC |
1045 | sim_monitor (SIM_DESC sd, |
1046 | sim_cpu *cpu, | |
1047 | address_word cia, | |
1048 | unsigned int reason) | |
8bae0a0c | 1049 | { |
53b9417e DE |
1050 | #ifdef DEBUG |
1051 | printf("DBG: sim_monitor: entered (reason = %d)\n",reason); | |
1052 | #endif /* DEBUG */ | |
1053 | ||
8bae0a0c JSC |
1054 | /* The IDT monitor actually allows two instructions per vector |
1055 | slot. However, the simulator currently causes a trap on each | |
1056 | individual instruction. We cheat, and lose the bottom bit. */ | |
1057 | reason >>= 1; | |
1058 | ||
1059 | /* The following callback functions are available, however the | |
1060 | monitor we are simulating does not make use of them: get_errno, | |
1061 | isatty, lseek, rename, system, time and unlink */ | |
525d929e AC |
1062 | switch (reason) |
1063 | { | |
1064 | ||
8bae0a0c JSC |
1065 | case 6: /* int open(char *path,int flags) */ |
1066 | { | |
525d929e AC |
1067 | char *path = fetch_str (sd, A0); |
1068 | V0 = sim_io_open (sd, path, (int)A1); | |
1069 | zfree (path); | |
1070 | break; | |
8bae0a0c | 1071 | } |
8bae0a0c JSC |
1072 | |
1073 | case 7: /* int read(int file,char *ptr,int len) */ | |
1074 | { | |
525d929e AC |
1075 | int fd = A0; |
1076 | int nr = A2; | |
1077 | char *buf = zalloc (nr); | |
1078 | V0 = sim_io_read (sd, fd, buf, nr); | |
1079 | sim_write (sd, A1, buf, nr); | |
1080 | zfree (buf); | |
8bae0a0c JSC |
1081 | } |
1082 | break; | |
1083 | ||
1084 | case 8: /* int write(int file,char *ptr,int len) */ | |
1085 | { | |
525d929e AC |
1086 | int fd = A0; |
1087 | int nr = A2; | |
1088 | char *buf = zalloc (nr); | |
1089 | sim_read (sd, A1, buf, nr); | |
1090 | V0 = sim_io_write (sd, fd, buf, nr); | |
1091 | zfree (buf); | |
1092 | break; | |
8bae0a0c | 1093 | } |
8bae0a0c JSC |
1094 | |
1095 | case 10: /* int close(int file) */ | |
525d929e AC |
1096 | { |
1097 | V0 = sim_io_close (sd, (int)A0); | |
1098 | break; | |
1099 | } | |
8bae0a0c | 1100 | |
e0e0fc76 MA |
1101 | case 2: /* Densan monitor: char inbyte(int waitflag) */ |
1102 | { | |
1103 | if (A0 == 0) /* waitflag == NOWAIT */ | |
192ae475 | 1104 | V0 = (unsigned_word)-1; |
e0e0fc76 MA |
1105 | } |
1106 | /* Drop through to case 11 */ | |
1107 | ||
8bae0a0c JSC |
1108 | case 11: /* char inbyte(void) */ |
1109 | { | |
1110 | char tmp; | |
525d929e AC |
1111 | if (sim_io_read_stdin (sd, &tmp, sizeof(char)) != sizeof(char)) |
1112 | { | |
1113 | sim_io_error(sd,"Invalid return from character read"); | |
192ae475 | 1114 | V0 = (unsigned_word)-1; |
525d929e | 1115 | } |
8bae0a0c | 1116 | else |
192ae475 | 1117 | V0 = (unsigned_word)tmp; |
525d929e | 1118 | break; |
8bae0a0c | 1119 | } |
8bae0a0c | 1120 | |
e0e0fc76 | 1121 | case 3: /* Densan monitor: void co(char chr) */ |
8bae0a0c JSC |
1122 | case 12: /* void outbyte(char chr) : write a byte to "stdout" */ |
1123 | { | |
1124 | char tmp = (char)(A0 & 0xFF); | |
525d929e AC |
1125 | sim_io_write_stdout (sd, &tmp, sizeof(char)); |
1126 | break; | |
8bae0a0c | 1127 | } |
8bae0a0c JSC |
1128 | |
1129 | case 17: /* void _exit() */ | |
525d929e AC |
1130 | { |
1131 | sim_io_eprintf (sd, "sim_monitor(17): _exit(int reason) to be coded\n"); | |
01737f42 | 1132 | sim_engine_halt (SD, CPU, NULL, NULL_CIA, sim_exited, |
525d929e AC |
1133 | (unsigned int)(A0 & 0xFFFFFFFF)); |
1134 | break; | |
1135 | } | |
8bae0a0c | 1136 | |
280f90e1 AMT |
1137 | case 28 : /* PMON flush_cache */ |
1138 | break; | |
1139 | ||
8bae0a0c JSC |
1140 | case 55: /* void get_mem_info(unsigned int *ptr) */ |
1141 | /* in: A0 = pointer to three word memory location */ | |
1142 | /* out: [A0 + 0] = size */ | |
1143 | /* [A0 + 4] = instruction cache size */ | |
1144 | /* [A0 + 8] = data cache size */ | |
1145 | { | |
725fc5d9 AC |
1146 | unsigned_4 value = MEM_SIZE /* FIXME STATE_MEM_SIZE (sd) */; |
1147 | unsigned_4 zero = 0; | |
525d929e | 1148 | H2T (value); |
725fc5d9 AC |
1149 | sim_write (sd, A0 + 0, (char *)&value, 4); |
1150 | sim_write (sd, A0 + 4, (char *)&zero, 4); | |
1151 | sim_write (sd, A0 + 8, (char *)&zero, 4); | |
030843d7 | 1152 | /* sim_io_eprintf (sd, "sim: get_mem_info() depreciated\n"); */ |
525d929e | 1153 | break; |
8bae0a0c | 1154 | } |
525d929e | 1155 | |
a9f7253f JSC |
1156 | case 158 : /* PMON printf */ |
1157 | /* in: A0 = pointer to format string */ | |
1158 | /* A1 = optional argument 1 */ | |
1159 | /* A2 = optional argument 2 */ | |
1160 | /* A3 = optional argument 3 */ | |
1161 | /* out: void */ | |
f24b7b69 | 1162 | /* The following is based on the PMON printf source */ |
a9f7253f | 1163 | { |
525d929e AC |
1164 | address_word s = A0; |
1165 | char c; | |
1166 | signed_word *ap = &A1; /* 1st argument */ | |
f24b7b69 JSC |
1167 | /* This isn't the quickest way, since we call the host print |
1168 | routine for every character almost. But it does avoid | |
1169 | having to allocate and manage a temporary string buffer. */ | |
525d929e AC |
1170 | /* TODO: Include check that we only use three arguments (A1, |
1171 | A2 and A3) */ | |
1172 | while (sim_read (sd, s++, &c, 1) && c != '\0') | |
1173 | { | |
1174 | if (c == '%') | |
1175 | { | |
1176 | char tmp[40]; | |
1177 | enum {FMT_RJUST, FMT_LJUST, FMT_RJUST0, FMT_CENTER} fmt = FMT_RJUST; | |
1178 | int width = 0, trunc = 0, haddot = 0, longlong = 0; | |
1179 | while (sim_read (sd, s++, &c, 1) && c != '\0') | |
1180 | { | |
1181 | if (strchr ("dobxXulscefg%", s)) | |
1182 | break; | |
1183 | else if (c == '-') | |
1184 | fmt = FMT_LJUST; | |
1185 | else if (c == '0') | |
1186 | fmt = FMT_RJUST0; | |
1187 | else if (c == '~') | |
1188 | fmt = FMT_CENTER; | |
1189 | else if (c == '*') | |
1190 | { | |
1191 | if (haddot) | |
1192 | trunc = (int)*ap++; | |
1193 | else | |
1194 | width = (int)*ap++; | |
1195 | } | |
1196 | else if (c >= '1' && c <= '9') | |
1197 | { | |
1198 | address_word t = s; | |
1199 | unsigned int n; | |
1200 | while (sim_read (sd, s++, &c, 1) == 1 && isdigit (c)) | |
1201 | tmp[s - t] = c; | |
1202 | tmp[s - t] = '\0'; | |
1203 | n = (unsigned int)strtol(tmp,NULL,10); | |
1204 | if (haddot) | |
1205 | trunc = n; | |
1206 | else | |
1207 | width = n; | |
1208 | s--; | |
1209 | } | |
1210 | else if (c == '.') | |
1211 | haddot = 1; | |
1212 | } | |
1213 | switch (c) | |
1214 | { | |
1215 | case '%': | |
1216 | sim_io_printf (sd, "%%"); | |
1217 | break; | |
1218 | case 's': | |
1219 | if ((int)*ap != 0) | |
1220 | { | |
1221 | address_word p = *ap++; | |
1222 | char ch; | |
1223 | while (sim_read (sd, p++, &ch, 1) == 1 && ch != '\0') | |
1224 | sim_io_printf(sd, "%c", ch); | |
1225 | } | |
1226 | else | |
1227 | sim_io_printf(sd,"(null)"); | |
1228 | break; | |
1229 | case 'c': | |
1230 | sim_io_printf (sd, "%c", (int)*ap++); | |
1231 | break; | |
1232 | default: | |
1233 | if (c == 'l') | |
1234 | { | |
1235 | sim_read (sd, s++, &c, 1); | |
1236 | if (c == 'l') | |
1237 | { | |
1238 | longlong = 1; | |
1239 | sim_read (sd, s++, &c, 1); | |
1240 | } | |
1241 | } | |
1242 | if (strchr ("dobxXu", c)) | |
1243 | { | |
1244 | word64 lv = (word64) *ap++; | |
1245 | if (c == 'b') | |
1246 | sim_io_printf(sd,"<binary not supported>"); | |
1247 | else | |
1248 | { | |
1249 | sprintf (tmp, "%%%s%c", longlong ? "ll" : "", c); | |
1250 | if (longlong) | |
1251 | sim_io_printf(sd, tmp, lv); | |
1252 | else | |
1253 | sim_io_printf(sd, tmp, (int)lv); | |
1254 | } | |
1255 | } | |
1256 | else if (strchr ("eEfgG", c)) | |
1257 | { | |
1258 | double dbl = *(double*)(ap++); | |
1259 | sprintf (tmp, "%%%d.%d%c", width, trunc, c); | |
1260 | sim_io_printf (sd, tmp, dbl); | |
1261 | trunc = 0; | |
1262 | } | |
1263 | } | |
1264 | } | |
1265 | else | |
1266 | sim_io_printf(sd, "%c", c); | |
1267 | } | |
1268 | break; | |
a9f7253f | 1269 | } |
a9f7253f | 1270 | |
8bae0a0c | 1271 | default: |
525d929e | 1272 | sim_io_error (sd, "TODO: sim_monitor(%d) : PC = 0x%s\n", |
95469ceb | 1273 | reason, pr_addr(cia)); |
8bae0a0c JSC |
1274 | break; |
1275 | } | |
1276 | return; | |
1277 | } | |
1278 | ||
7e6c297e ILT |
1279 | /* Store a word into memory. */ |
1280 | ||
1281 | static void | |
01737f42 AC |
1282 | store_word (SIM_DESC sd, |
1283 | sim_cpu *cpu, | |
1284 | address_word cia, | |
1285 | uword64 vaddr, | |
192ae475 | 1286 | signed_word val) |
7e6c297e | 1287 | { |
dad6f1f3 | 1288 | address_word paddr; |
7e6c297e ILT |
1289 | int uncached; |
1290 | ||
1291 | if ((vaddr & 3) != 0) | |
18c64df6 | 1292 | SignalExceptionAddressStore (); |
7e6c297e ILT |
1293 | else |
1294 | { | |
1295 | if (AddressTranslation (vaddr, isDATA, isSTORE, &paddr, &uncached, | |
1296 | isTARGET, isREAL)) | |
1297 | { | |
1298 | const uword64 mask = 7; | |
1299 | uword64 memval; | |
1300 | unsigned int byte; | |
1301 | ||
1302 | paddr = (paddr & ~mask) | ((paddr & mask) ^ (ReverseEndian << 2)); | |
1303 | byte = (vaddr & mask) ^ (BigEndianCPU << 2); | |
1304 | memval = ((uword64) val) << (8 * byte); | |
53b9417e | 1305 | StoreMemory (uncached, AccessLength_WORD, memval, 0, paddr, vaddr, |
7e6c297e ILT |
1306 | isREAL); |
1307 | } | |
1308 | } | |
1309 | } | |
1310 | ||
1311 | /* Load a word from memory. */ | |
1312 | ||
192ae475 | 1313 | static signed_word |
01737f42 AC |
1314 | load_word (SIM_DESC sd, |
1315 | sim_cpu *cpu, | |
1316 | address_word cia, | |
1317 | uword64 vaddr) | |
7e6c297e ILT |
1318 | { |
1319 | if ((vaddr & 3) != 0) | |
18c64df6 | 1320 | SignalExceptionAddressLoad (); |
7e6c297e ILT |
1321 | else |
1322 | { | |
dad6f1f3 | 1323 | address_word paddr; |
7e6c297e ILT |
1324 | int uncached; |
1325 | ||
1326 | if (AddressTranslation (vaddr, isDATA, isLOAD, &paddr, &uncached, | |
1327 | isTARGET, isREAL)) | |
1328 | { | |
1329 | const uword64 mask = 0x7; | |
1330 | const unsigned int reverse = ReverseEndian ? 1 : 0; | |
1331 | const unsigned int bigend = BigEndianCPU ? 1 : 0; | |
1332 | uword64 memval; | |
1333 | unsigned int byte; | |
1334 | ||
1335 | paddr = (paddr & ~mask) | ((paddr & mask) ^ (reverse << 2)); | |
53b9417e | 1336 | LoadMemory (&memval,NULL,uncached, AccessLength_WORD, paddr, vaddr, |
7e6c297e ILT |
1337 | isDATA, isREAL); |
1338 | byte = (vaddr & mask) ^ (bigend << 2); | |
1339 | return SIGNEXTEND (((memval >> (8 * byte)) & 0xffffffff), 32); | |
1340 | } | |
1341 | } | |
1342 | ||
1343 | return 0; | |
1344 | } | |
1345 | ||
1346 | /* Simulate the mips16 entry and exit pseudo-instructions. These | |
1347 | would normally be handled by the reserved instruction exception | |
1348 | code, but for ease of simulation we just handle them directly. */ | |
1349 | ||
1350 | static void | |
01737f42 AC |
1351 | mips16_entry (SIM_DESC sd, |
1352 | sim_cpu *cpu, | |
1353 | address_word cia, | |
1354 | unsigned int insn) | |
7e6c297e ILT |
1355 | { |
1356 | int aregs, sregs, rreg; | |
1357 | ||
53b9417e DE |
1358 | #ifdef DEBUG |
1359 | printf("DBG: mips16_entry: entered (insn = 0x%08X)\n",insn); | |
1360 | #endif /* DEBUG */ | |
1361 | ||
7e6c297e ILT |
1362 | aregs = (insn & 0x700) >> 8; |
1363 | sregs = (insn & 0x0c0) >> 6; | |
1364 | rreg = (insn & 0x020) >> 5; | |
1365 | ||
da0bce9c ILT |
1366 | /* This should be checked by the caller. */ |
1367 | if (sregs == 3) | |
7e6c297e ILT |
1368 | abort (); |
1369 | ||
da0bce9c | 1370 | if (aregs < 5) |
7e6c297e ILT |
1371 | { |
1372 | int i; | |
192ae475 | 1373 | signed_word tsp; |
7e6c297e ILT |
1374 | |
1375 | /* This is the entry pseudo-instruction. */ | |
1376 | ||
1377 | for (i = 0; i < aregs; i++) | |
01737f42 | 1378 | store_word (SD, CPU, cia, (uword64) (SP + 4 * i), GPR[i + 4]); |
7e6c297e ILT |
1379 | |
1380 | tsp = SP; | |
1381 | SP -= 32; | |
1382 | ||
1383 | if (rreg) | |
1384 | { | |
1385 | tsp -= 4; | |
01737f42 | 1386 | store_word (SD, CPU, cia, (uword64) tsp, RA); |
7e6c297e ILT |
1387 | } |
1388 | ||
1389 | for (i = 0; i < sregs; i++) | |
1390 | { | |
1391 | tsp -= 4; | |
01737f42 | 1392 | store_word (SD, CPU, cia, (uword64) tsp, GPR[16 + i]); |
7e6c297e ILT |
1393 | } |
1394 | } | |
1395 | else | |
1396 | { | |
1397 | int i; | |
192ae475 | 1398 | signed_word tsp; |
7e6c297e ILT |
1399 | |
1400 | /* This is the exit pseudo-instruction. */ | |
1401 | ||
1402 | tsp = SP + 32; | |
1403 | ||
1404 | if (rreg) | |
1405 | { | |
1406 | tsp -= 4; | |
01737f42 | 1407 | RA = load_word (SD, CPU, cia, (uword64) tsp); |
7e6c297e ILT |
1408 | } |
1409 | ||
1410 | for (i = 0; i < sregs; i++) | |
1411 | { | |
1412 | tsp -= 4; | |
01737f42 | 1413 | GPR[i + 16] = load_word (SD, CPU, cia, (uword64) tsp); |
7e6c297e ILT |
1414 | } |
1415 | ||
1416 | SP += 32; | |
1417 | ||
192ae475 | 1418 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) |
da0bce9c | 1419 | { |
192ae475 AC |
1420 | if (aregs == 5) |
1421 | { | |
1422 | FGR[0] = WORD64LO (GPR[4]); | |
1423 | FPR_STATE[0] = fmt_uninterpreted; | |
1424 | } | |
1425 | else if (aregs == 6) | |
1426 | { | |
1427 | FGR[0] = WORD64LO (GPR[5]); | |
1428 | FGR[1] = WORD64LO (GPR[4]); | |
1429 | FPR_STATE[0] = fmt_uninterpreted; | |
1430 | FPR_STATE[1] = fmt_uninterpreted; | |
1431 | } | |
1432 | } | |
da0bce9c | 1433 | |
7e6c297e ILT |
1434 | PC = RA; |
1435 | } | |
192ae475 | 1436 | |
7e6c297e ILT |
1437 | } |
1438 | ||
8bae0a0c JSC |
1439 | /*-- trace support ----------------------------------------------------------*/ |
1440 | ||
1441 | /* The TRACE support is provided (if required) in the memory accessing | |
1442 | routines. Since we are also providing the architecture specific | |
1443 | features, the architecture simulation code can also deal with | |
1444 | notifying the TRACE world of cache flushes, etc. Similarly we do | |
1445 | not need to provide profiling support in the simulator engine, | |
1446 | since we can sample in the instruction fetch control loop. By | |
1447 | defining the TRACE manifest, we add tracing as a run-time | |
1448 | option. */ | |
1449 | ||
1450 | #if defined(TRACE) | |
1451 | /* Tracing by default produces "din" format (as required by | |
1452 | dineroIII). Each line of such a trace file *MUST* have a din label | |
1453 | and address field. The rest of the line is ignored, so comments can | |
1454 | be included if desired. The first field is the label which must be | |
1455 | one of the following values: | |
1456 | ||
1457 | 0 read data | |
1458 | 1 write data | |
1459 | 2 instruction fetch | |
1460 | 3 escape record (treated as unknown access type) | |
1461 | 4 escape record (causes cache flush) | |
1462 | ||
1463 | The address field is a 32bit (lower-case) hexadecimal address | |
1464 | value. The address should *NOT* be preceded by "0x". | |
1465 | ||
1466 | The size of the memory transfer is not important when dealing with | |
1467 | cache lines (as long as no more than a cache line can be | |
1468 | transferred in a single operation :-), however more information | |
1469 | could be given following the dineroIII requirement to allow more | |
1470 | complete memory and cache simulators to provide better | |
1471 | results. i.e. the University of Pisa has a cache simulator that can | |
1472 | also take bus size and speed as (variable) inputs to calculate | |
1473 | complete system performance (a much more useful ability when trying | |
1474 | to construct an end product, rather than a processor). They | |
1475 | currently have an ARM version of their tool called ChARM. */ | |
1476 | ||
e3d12c65 | 1477 | |
030843d7 | 1478 | void |
01737f42 AC |
1479 | dotrace (SIM_DESC sd, |
1480 | sim_cpu *cpu, | |
1481 | FILE *tracefh, | |
1482 | int type, | |
1483 | SIM_ADDR address, | |
1484 | int width, | |
1485 | char *comment,...) | |
8bae0a0c | 1486 | { |
0c2c5f61 | 1487 | if (STATE & simTRACE) { |
8bae0a0c | 1488 | va_list ap; |
53b9417e | 1489 | fprintf(tracefh,"%d %s ; width %d ; ", |
6429b296 | 1490 | type, |
53b9417e DE |
1491 | pr_addr(address), |
1492 | width); | |
8bae0a0c | 1493 | va_start(ap,comment); |
6429b296 | 1494 | vfprintf(tracefh,comment,ap); |
8bae0a0c JSC |
1495 | va_end(ap); |
1496 | fprintf(tracefh,"\n"); | |
1497 | } | |
1498 | /* NOTE: Since the "din" format will only accept 32bit addresses, and | |
1499 | we may be generating 64bit ones, we should put the hi-32bits of the | |
1500 | address into the comment field. */ | |
1501 | ||
1502 | /* TODO: Provide a buffer for the trace lines. We can then avoid | |
1503 | performing writes until the buffer is filled, or the file is | |
1504 | being closed. */ | |
1505 | ||
1506 | /* NOTE: We could consider adding a comment field to the "din" file | |
1507 | produced using type 3 markers (unknown access). This would then | |
1508 | allow information about the program that the "din" is for, and | |
1509 | the MIPs world that was being simulated, to be placed into the | |
1510 | trace file. */ | |
1511 | ||
1512 | return; | |
1513 | } | |
1514 | #endif /* TRACE */ | |
1515 | ||
1516 | /*---------------------------------------------------------------------------*/ | |
1517 | /*-- simulator engine -------------------------------------------------------*/ | |
1518 | /*---------------------------------------------------------------------------*/ | |
1519 | ||
1520 | static void | |
01737f42 | 1521 | ColdReset (SIM_DESC sd) |
8bae0a0c | 1522 | { |
01737f42 AC |
1523 | int cpu_nr; |
1524 | for (cpu_nr = 0; cpu_nr < sim_engine_nr_cpus (sd); cpu_nr++) | |
dad6f1f3 | 1525 | { |
01737f42 AC |
1526 | sim_cpu *cpu = STATE_CPU (sd, cpu_nr); |
1527 | /* RESET: Fixed PC address: */ | |
1528 | PC = UNSIGNED64 (0xFFFFFFFFBFC00000); | |
1529 | /* The reset vector address is in the unmapped, uncached memory space. */ | |
1530 | ||
1531 | SR &= ~(status_SR | status_TS | status_RP); | |
1532 | SR |= (status_ERL | status_BEV); | |
1533 | ||
1534 | /* Cheat and allow access to the complete register set immediately */ | |
1535 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT | |
1536 | && WITH_TARGET_WORD_BITSIZE == 64) | |
1537 | SR |= status_FR; /* 64bit registers */ | |
1538 | ||
1539 | /* Ensure that any instructions with pending register updates are | |
1540 | cleared: */ | |
2acd126a | 1541 | PENDING_INVALIDATE(); |
01737f42 AC |
1542 | |
1543 | /* Initialise the FPU registers to the unknown state */ | |
1544 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) | |
1545 | { | |
1546 | int rn; | |
1547 | for (rn = 0; (rn < 32); rn++) | |
1548 | FPR_STATE[rn] = fmt_uninterpreted; | |
1549 | } | |
1550 | ||
dad6f1f3 | 1551 | } |
8bae0a0c JSC |
1552 | } |
1553 | ||
8bae0a0c JSC |
1554 | /* Description from page A-26 of the "MIPS IV Instruction Set" manual (revision 3.1) */ |
1555 | /* Signal an exception condition. This will result in an exception | |
1556 | that aborts the instruction. The instruction operation pseudocode | |
50a2a691 | 1557 | will never see a return from this function call. */ |
2e61a3ad | 1558 | |
18c64df6 | 1559 | void |
7ce8b917 | 1560 | signal_exception (SIM_DESC sd, |
01737f42 | 1561 | sim_cpu *cpu, |
7ce8b917 AC |
1562 | address_word cia, |
1563 | int exception,...) | |
8bae0a0c | 1564 | { |
56e7c849 | 1565 | int vector; |
6eedf3f4 MA |
1566 | |
1567 | #ifdef DEBUG | |
95469ceb | 1568 | sim_io_printf(sd,"DBG: SignalException(%d) PC = 0x%s\n",exception,pr_addr(cia)); |
6eedf3f4 MA |
1569 | #endif /* DEBUG */ |
1570 | ||
8bae0a0c JSC |
1571 | /* Ensure that any active atomic read/modify/write operation will fail: */ |
1572 | LLBIT = 0; | |
1573 | ||
1574 | switch (exception) { | |
1575 | /* TODO: For testing purposes I have been ignoring TRAPs. In | |
1576 | reality we should either simulate them, or allow the user to | |
6eedf3f4 MA |
1577 | ignore them at run-time. |
1578 | Same for SYSCALL */ | |
8bae0a0c | 1579 | case Trap : |
95469ceb | 1580 | sim_io_eprintf(sd,"Ignoring instruction TRAP (PC 0x%s)\n",pr_addr(cia)); |
8bae0a0c JSC |
1581 | break; |
1582 | ||
6eedf3f4 MA |
1583 | case SystemCall : |
1584 | { | |
1585 | va_list ap; | |
1586 | unsigned int instruction; | |
1587 | unsigned int code; | |
1588 | ||
1589 | va_start(ap,exception); | |
1590 | instruction = va_arg(ap,unsigned int); | |
1591 | va_end(ap); | |
1592 | ||
1593 | code = (instruction >> 6) & 0xFFFFF; | |
1594 | ||
18c64df6 | 1595 | sim_io_eprintf(sd,"Ignoring instruction `syscall %d' (PC 0x%s)\n", |
69d5a566 | 1596 | code, pr_addr(cia)); |
6eedf3f4 MA |
1597 | } |
1598 | break; | |
1599 | ||
1600 | case DebugBreakPoint : | |
1601 | if (! (Debug & Debug_DM)) | |
1602 | { | |
1603 | if (INDELAYSLOT()) | |
1604 | { | |
1605 | CANCELDELAYSLOT(); | |
1606 | ||
1607 | Debug |= Debug_DBD; /* signaled from within in delay slot */ | |
95469ceb | 1608 | DEPC = cia - 4; /* reference the branch instruction */ |
6eedf3f4 MA |
1609 | } |
1610 | else | |
1611 | { | |
1612 | Debug &= ~Debug_DBD; /* not signaled from within a delay slot */ | |
95469ceb | 1613 | DEPC = cia; |
6eedf3f4 MA |
1614 | } |
1615 | ||
1616 | Debug |= Debug_DM; /* in debugging mode */ | |
1617 | Debug |= Debug_DBp; /* raising a DBp exception */ | |
1618 | PC = 0xBFC00200; | |
01737f42 | 1619 | sim_engine_restart (SD, CPU, NULL, NULL_CIA); |
6eedf3f4 MA |
1620 | } |
1621 | break; | |
1622 | ||
8bae0a0c JSC |
1623 | case ReservedInstruction : |
1624 | { | |
1625 | va_list ap; | |
1626 | unsigned int instruction; | |
1627 | va_start(ap,exception); | |
1628 | instruction = va_arg(ap,unsigned int); | |
1629 | va_end(ap); | |
1630 | /* Provide simple monitor support using ReservedInstruction | |
1631 | exceptions. The following code simulates the fixed vector | |
1632 | entry points into the IDT monitor by causing a simulator | |
1633 | trap, performing the monitor operation, and returning to | |
1634 | the address held in the $ra register (standard PCS return | |
1635 | address). This means we only need to pre-load the vector | |
1636 | space with suitable instruction values. For systems were | |
1637 | actual trap instructions are used, we would not need to | |
1638 | perform this magic. */ | |
7ce8b917 AC |
1639 | if ((instruction & RSVD_INSTRUCTION_MASK) == RSVD_INSTRUCTION) |
1640 | { | |
01737f42 | 1641 | sim_monitor (SD, CPU, cia, ((instruction >> RSVD_INSTRUCTION_ARG_SHIFT) & RSVD_INSTRUCTION_ARG_MASK) ); |
7ce8b917 AC |
1642 | /* NOTE: This assumes that a branch-and-link style |
1643 | instruction was used to enter the vector (which is the | |
1644 | case with the current IDT monitor). */ | |
01737f42 | 1645 | sim_engine_restart (SD, CPU, NULL, RA); |
7ce8b917 | 1646 | } |
7e6c297e ILT |
1647 | /* Look for the mips16 entry and exit instructions, and |
1648 | simulate a handler for them. */ | |
95469ceb | 1649 | else if ((cia & 1) != 0 |
7e6c297e | 1650 | && (instruction & 0xf81f) == 0xe809 |
7ce8b917 AC |
1651 | && (instruction & 0x0c0) != 0x0c0) |
1652 | { | |
01737f42 | 1653 | mips16_entry (SD, CPU, cia, instruction); |
7ce8b917 AC |
1654 | sim_engine_restart (sd, NULL, NULL, NULL_CIA); |
1655 | } | |
1656 | /* else fall through to normal exception processing */ | |
f3bdd368 | 1657 | sim_io_eprintf(sd,"ReservedInstruction at PC = 0x%s\n", pr_addr (cia)); |
8bae0a0c JSC |
1658 | } |
1659 | ||
05d1322f | 1660 | case BreakPoint: |
e3d12c65 | 1661 | #ifdef DEBUG |
95469ceb | 1662 | sim_io_printf(sd,"DBG: SignalException(%d) PC = 0x%s\n",exception,pr_addr(cia)); |
8bae0a0c | 1663 | #endif /* DEBUG */ |
05d1322f JL |
1664 | /* Keep a copy of the current A0 in-case this is the program exit |
1665 | breakpoint: */ | |
1666 | { | |
1667 | va_list ap; | |
1668 | unsigned int instruction; | |
1669 | va_start(ap,exception); | |
1670 | instruction = va_arg(ap,unsigned int); | |
1671 | va_end(ap); | |
1672 | /* Check for our special terminating BREAK: */ | |
1673 | if ((instruction & 0x03FFFFC0) == 0x03ff0000) { | |
01737f42 | 1674 | sim_engine_halt (SD, CPU, NULL, cia, |
05d1322f JL |
1675 | sim_exited, (unsigned int)(A0 & 0xFFFFFFFF)); |
1676 | } | |
1677 | } | |
0c2c5f61 | 1678 | if (STATE & simDELAYSLOT) |
95469ceb | 1679 | PC = cia - 4; /* reference the branch instruction */ |
05d1322f | 1680 | else |
95469ceb | 1681 | PC = cia; |
01737f42 | 1682 | sim_engine_halt (SD, CPU, NULL, cia, |
232156de | 1683 | sim_stopped, SIM_SIGTRAP); |
05d1322f JL |
1684 | |
1685 | default: | |
8bae0a0c JSC |
1686 | /* Store exception code into current exception id variable (used |
1687 | by exit code): */ | |
1688 | ||
1689 | /* TODO: If not simulating exceptions then stop the simulator | |
1690 | execution. At the moment we always stop the simulation. */ | |
e3d12c65 | 1691 | |
56e7c849 AC |
1692 | /* See figure 5-17 for an outline of the code below */ |
1693 | if (! (SR & status_EXL)) | |
1694 | { | |
1695 | CAUSE = (exception << 2); | |
0c2c5f61 | 1696 | if (STATE & simDELAYSLOT) |
56e7c849 | 1697 | { |
0c2c5f61 | 1698 | STATE &= ~simDELAYSLOT; |
56e7c849 | 1699 | CAUSE |= cause_BD; |
95469ceb | 1700 | EPC = (cia - 4); /* reference the branch instruction */ |
56e7c849 AC |
1701 | } |
1702 | else | |
95469ceb | 1703 | EPC = cia; |
56e7c849 AC |
1704 | /* FIXME: TLB et.al. */ |
1705 | vector = 0x180; | |
1706 | } | |
1707 | else | |
1708 | { | |
05d1322f | 1709 | CAUSE = (exception << 2); |
56e7c849 AC |
1710 | vector = 0x180; |
1711 | } | |
1712 | SR |= status_EXL; | |
e3d12c65 DE |
1713 | /* Store exception code into current exception id variable (used |
1714 | by exit code): */ | |
56e7c849 AC |
1715 | if (SR & status_BEV) |
1716 | PC = (signed)0xBFC00200 + 0x180; | |
1717 | else | |
1718 | PC = (signed)0x80000000 + 0x180; | |
1719 | ||
50a2a691 AC |
1720 | switch ((CAUSE >> 2) & 0x1F) |
1721 | { | |
1722 | case Interrupt: | |
56e7c849 AC |
1723 | /* Interrupts arrive during event processing, no need to |
1724 | restart */ | |
1725 | return; | |
50a2a691 AC |
1726 | |
1727 | case TLBModification: | |
1728 | case TLBLoad: | |
1729 | case TLBStore: | |
1730 | case AddressLoad: | |
1731 | case AddressStore: | |
1732 | case InstructionFetch: | |
1733 | case DataReference: | |
56e7c849 AC |
1734 | /* The following is so that the simulator will continue from the |
1735 | exception address on breakpoint operations. */ | |
1736 | PC = EPC; | |
01737f42 | 1737 | sim_engine_halt (SD, CPU, NULL, NULL_CIA, |
232156de | 1738 | sim_stopped, SIM_SIGBUS); |
50a2a691 AC |
1739 | |
1740 | case ReservedInstruction: | |
1741 | case CoProcessorUnusable: | |
56e7c849 | 1742 | PC = EPC; |
01737f42 | 1743 | sim_engine_halt (SD, CPU, NULL, NULL_CIA, |
232156de | 1744 | sim_stopped, SIM_SIGILL); |
50a2a691 AC |
1745 | |
1746 | case IntegerOverflow: | |
1747 | case FPE: | |
01737f42 | 1748 | sim_engine_halt (SD, CPU, NULL, NULL_CIA, |
232156de | 1749 | sim_stopped, SIM_SIGFPE); |
50a2a691 AC |
1750 | |
1751 | case Trap: | |
1752 | case Watch: | |
1753 | case SystemCall: | |
56e7c849 | 1754 | PC = EPC; |
01737f42 | 1755 | sim_engine_halt (SD, CPU, NULL, NULL_CIA, |
232156de | 1756 | sim_stopped, SIM_SIGTRAP); |
50a2a691 | 1757 | |
05d1322f JL |
1758 | case BreakPoint: |
1759 | PC = EPC; | |
01737f42 | 1760 | sim_engine_abort (SD, CPU, NULL_CIA, |
05d1322f JL |
1761 | "FATAL: Should not encounter a breakpoint\n"); |
1762 | ||
50a2a691 | 1763 | default : /* Unknown internal exception */ |
56e7c849 | 1764 | PC = EPC; |
01737f42 | 1765 | sim_engine_halt (SD, CPU, NULL, NULL_CIA, |
232156de | 1766 | sim_stopped, SIM_SIGABRT); |
50a2a691 AC |
1767 | |
1768 | } | |
8bae0a0c JSC |
1769 | |
1770 | case SimulatorFault: | |
1771 | { | |
1772 | va_list ap; | |
1773 | char *msg; | |
1774 | va_start(ap,exception); | |
1775 | msg = va_arg(ap,char *); | |
50a2a691 | 1776 | va_end(ap); |
01737f42 | 1777 | sim_engine_abort (SD, CPU, NULL_CIA, |
2e61a3ad | 1778 | "FATAL: Simulator error \"%s\"\n",msg); |
8bae0a0c | 1779 | } |
8bae0a0c JSC |
1780 | } |
1781 | ||
1782 | return; | |
1783 | } | |
1784 | ||
1785 | #if defined(WARN_RESULT) | |
1786 | /* Description from page A-26 of the "MIPS IV Instruction Set" manual (revision 3.1) */ | |
1787 | /* This function indicates that the result of the operation is | |
1788 | undefined. However, this should not affect the instruction | |
1789 | stream. All that is meant to happen is that the destination | |
1790 | register is set to an undefined result. To keep the simulator | |
1791 | simple, we just don't bother updating the destination register, so | |
1792 | the overall result will be undefined. If desired we can stop the | |
1793 | simulator by raising a pseudo-exception. */ | |
95469ceb | 1794 | #define UndefinedResult() undefined_result (sd,cia) |
8bae0a0c | 1795 | static void |
95469ceb AC |
1796 | undefined_result(sd,cia) |
1797 | SIM_DESC sd; | |
1798 | address_word cia; | |
8bae0a0c | 1799 | { |
95469ceb | 1800 | sim_io_eprintf(sd,"UndefinedResult: PC = 0x%s\n",pr_addr(cia)); |
8bae0a0c JSC |
1801 | #if 0 /* Disabled for the moment, since it actually happens a lot at the moment. */ |
1802 | state |= simSTOP; | |
1803 | #endif | |
1804 | return; | |
1805 | } | |
1806 | #endif /* WARN_RESULT */ | |
1807 | ||
8bae0a0c JSC |
1808 | /*-- FPU support routines ---------------------------------------------------*/ |
1809 | ||
8bae0a0c JSC |
1810 | /* Numbers are held in normalized form. The SINGLE and DOUBLE binary |
1811 | formats conform to ANSI/IEEE Std 754-1985. */ | |
1812 | /* SINGLE precision floating: | |
1813 | * seeeeeeeefffffffffffffffffffffff | |
1814 | * s = 1bit = sign | |
1815 | * e = 8bits = exponent | |
1816 | * f = 23bits = fraction | |
1817 | */ | |
1818 | /* SINGLE precision fixed: | |
1819 | * siiiiiiiiiiiiiiiiiiiiiiiiiiiiiii | |
1820 | * s = 1bit = sign | |
1821 | * i = 31bits = integer | |
1822 | */ | |
1823 | /* DOUBLE precision floating: | |
1824 | * seeeeeeeeeeeffffffffffffffffffffffffffffffffffffffffffffffffffff | |
1825 | * s = 1bit = sign | |
1826 | * e = 11bits = exponent | |
1827 | * f = 52bits = fraction | |
1828 | */ | |
1829 | /* DOUBLE precision fixed: | |
1830 | * siiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii | |
1831 | * s = 1bit = sign | |
1832 | * i = 63bits = integer | |
1833 | */ | |
1834 | ||
1835 | /* Extract sign-bit: */ | |
1836 | #define FP_S_s(v) (((v) & ((unsigned)1 << 31)) ? 1 : 0) | |
e871dd18 | 1837 | #define FP_D_s(v) (((v) & ((uword64)1 << 63)) ? 1 : 0) |
8bae0a0c JSC |
1838 | /* Extract biased exponent: */ |
1839 | #define FP_S_be(v) (((v) >> 23) & 0xFF) | |
1840 | #define FP_D_be(v) (((v) >> 52) & 0x7FF) | |
1841 | /* Extract unbiased Exponent: */ | |
1842 | #define FP_S_e(v) (FP_S_be(v) - 0x7F) | |
1843 | #define FP_D_e(v) (FP_D_be(v) - 0x3FF) | |
1844 | /* Extract complete fraction field: */ | |
1845 | #define FP_S_f(v) ((v) & ~((unsigned)0x1FF << 23)) | |
e871dd18 | 1846 | #define FP_D_f(v) ((v) & ~((uword64)0xFFF << 52)) |
8bae0a0c JSC |
1847 | /* Extract numbered fraction bit: */ |
1848 | #define FP_S_fb(b,v) (((v) & (1 << (23 - (b)))) ? 1 : 0) | |
1849 | #define FP_D_fb(b,v) (((v) & (1 << (52 - (b)))) ? 1 : 0) | |
1850 | ||
1851 | /* Explicit QNaN values used when value required: */ | |
1852 | #define FPQNaN_SINGLE (0x7FBFFFFF) | |
1853 | #define FPQNaN_WORD (0x7FFFFFFF) | |
e871dd18 JSC |
1854 | #define FPQNaN_DOUBLE (((uword64)0x7FF7FFFF << 32) | 0xFFFFFFFF) |
1855 | #define FPQNaN_LONG (((uword64)0x7FFFFFFF << 32) | 0xFFFFFFFF) | |
8bae0a0c JSC |
1856 | |
1857 | /* Explicit Infinity values used when required: */ | |
1858 | #define FPINF_SINGLE (0x7F800000) | |
e871dd18 | 1859 | #define FPINF_DOUBLE (((uword64)0x7FF00000 << 32) | 0x00000000) |
8bae0a0c JSC |
1860 | |
1861 | #if 1 /* def DEBUG */ | |
1862 | #define RMMODE(v) (((v) == FP_RM_NEAREST) ? "Round" : (((v) == FP_RM_TOZERO) ? "Trunc" : (((v) == FP_RM_TOPINF) ? "Ceil" : "Floor"))) | |
1863 | #define DOFMT(v) (((v) == fmt_single) ? "single" : (((v) == fmt_double) ? "double" : (((v) == fmt_word) ? "word" : (((v) == fmt_long) ? "long" : (((v) == fmt_unknown) ? "<unknown>" : (((v) == fmt_uninterpreted) ? "<uninterpreted>" : "<format error>")))))) | |
1864 | #endif /* DEBUG */ | |
1865 | ||
18c64df6 | 1866 | uword64 |
01737f42 AC |
1867 | value_fpr (SIM_DESC sd, |
1868 | sim_cpu *cpu, | |
1869 | address_word cia, | |
1870 | int fpr, | |
1871 | FP_formats fmt) | |
8bae0a0c | 1872 | { |
50a2a691 | 1873 | uword64 value = 0; |
8bae0a0c JSC |
1874 | int err = 0; |
1875 | ||
1876 | /* Treat unused register values, as fixed-point 64bit values: */ | |
1877 | if ((fmt == fmt_uninterpreted) || (fmt == fmt_unknown)) | |
1878 | #if 1 | |
1879 | /* If request to read data as "uninterpreted", then use the current | |
1880 | encoding: */ | |
0c2c5f61 | 1881 | fmt = FPR_STATE[fpr]; |
8bae0a0c JSC |
1882 | #else |
1883 | fmt = fmt_long; | |
1884 | #endif | |
1885 | ||
1886 | /* For values not yet accessed, set to the desired format: */ | |
0c2c5f61 AC |
1887 | if (FPR_STATE[fpr] == fmt_uninterpreted) { |
1888 | FPR_STATE[fpr] = fmt; | |
8bae0a0c JSC |
1889 | #ifdef DEBUG |
1890 | printf("DBG: Register %d was fmt_uninterpreted. Now %s\n",fpr,DOFMT(fmt)); | |
1891 | #endif /* DEBUG */ | |
1892 | } | |
0c2c5f61 | 1893 | if (fmt != FPR_STATE[fpr]) { |
95469ceb | 1894 | sim_io_eprintf(sd,"FPR %d (format %s) being accessed with format %s - setting to unknown (PC = 0x%s)\n",fpr,DOFMT(FPR_STATE[fpr]),DOFMT(fmt),pr_addr(cia)); |
0c2c5f61 | 1895 | FPR_STATE[fpr] = fmt_unknown; |
8bae0a0c JSC |
1896 | } |
1897 | ||
0c2c5f61 | 1898 | if (FPR_STATE[fpr] == fmt_unknown) { |
8bae0a0c JSC |
1899 | /* Set QNaN value: */ |
1900 | switch (fmt) { | |
1901 | case fmt_single: | |
1902 | value = FPQNaN_SINGLE; | |
1903 | break; | |
1904 | ||
1905 | case fmt_double: | |
1906 | value = FPQNaN_DOUBLE; | |
1907 | break; | |
1908 | ||
1909 | case fmt_word: | |
1910 | value = FPQNaN_WORD; | |
1911 | break; | |
1912 | ||
1913 | case fmt_long: | |
1914 | value = FPQNaN_LONG; | |
1915 | break; | |
1916 | ||
1917 | default: | |
1918 | err = -1; | |
1919 | break; | |
1920 | } | |
1921 | } else if (SizeFGR() == 64) { | |
1922 | switch (fmt) { | |
1923 | case fmt_single: | |
1924 | case fmt_word: | |
1925 | value = (FGR[fpr] & 0xFFFFFFFF); | |
1926 | break; | |
1927 | ||
1928 | case fmt_uninterpreted: | |
1929 | case fmt_double: | |
1930 | case fmt_long: | |
1931 | value = FGR[fpr]; | |
1932 | break; | |
1933 | ||
1934 | default : | |
1935 | err = -1; | |
1936 | break; | |
1937 | } | |
da0bce9c | 1938 | } else { |
8bae0a0c JSC |
1939 | switch (fmt) { |
1940 | case fmt_single: | |
1941 | case fmt_word: | |
1942 | value = (FGR[fpr] & 0xFFFFFFFF); | |
1943 | break; | |
1944 | ||
1945 | case fmt_uninterpreted: | |
1946 | case fmt_double: | |
1947 | case fmt_long: | |
da0bce9c ILT |
1948 | if ((fpr & 1) == 0) { /* even registers only */ |
1949 | value = ((((uword64)FGR[fpr+1]) << 32) | (FGR[fpr] & 0xFFFFFFFF)); | |
1950 | } else { | |
18c64df6 | 1951 | SignalException(ReservedInstruction,0); |
da0bce9c | 1952 | } |
8bae0a0c JSC |
1953 | break; |
1954 | ||
1955 | default : | |
1956 | err = -1; | |
1957 | break; | |
1958 | } | |
1959 | } | |
1960 | ||
1961 | if (err) | |
18c64df6 | 1962 | SignalExceptionSimulatorFault ("Unrecognised FP format in ValueFPR()"); |
8bae0a0c JSC |
1963 | |
1964 | #ifdef DEBUG | |
95469ceb | 1965 | printf("DBG: ValueFPR: fpr = %d, fmt = %s, value = 0x%s : PC = 0x%s : SizeFGR() = %d\n",fpr,DOFMT(fmt),pr_addr(value),pr_addr(cia),SizeFGR()); |
8bae0a0c JSC |
1966 | #endif /* DEBUG */ |
1967 | ||
1968 | return(value); | |
1969 | } | |
1970 | ||
18c64df6 | 1971 | void |
01737f42 AC |
1972 | store_fpr (SIM_DESC sd, |
1973 | sim_cpu *cpu, | |
1974 | address_word cia, | |
1975 | int fpr, | |
1976 | FP_formats fmt, | |
1977 | uword64 value) | |
8bae0a0c JSC |
1978 | { |
1979 | int err = 0; | |
1980 | ||
1981 | #ifdef DEBUG | |
95469ceb | 1982 | printf("DBG: StoreFPR: fpr = %d, fmt = %s, value = 0x%s : PC = 0x%s : SizeFGR() = %d\n",fpr,DOFMT(fmt),pr_addr(value),pr_addr(cia),SizeFGR()); |
8bae0a0c JSC |
1983 | #endif /* DEBUG */ |
1984 | ||
1985 | if (SizeFGR() == 64) { | |
1986 | switch (fmt) { | |
a09a30d2 AC |
1987 | case fmt_uninterpreted_32: |
1988 | fmt = fmt_uninterpreted; | |
8bae0a0c JSC |
1989 | case fmt_single : |
1990 | case fmt_word : | |
e871dd18 | 1991 | FGR[fpr] = (((uword64)0xDEADC0DE << 32) | (value & 0xFFFFFFFF)); |
0c2c5f61 | 1992 | FPR_STATE[fpr] = fmt; |
8bae0a0c JSC |
1993 | break; |
1994 | ||
a09a30d2 AC |
1995 | case fmt_uninterpreted_64: |
1996 | fmt = fmt_uninterpreted; | |
8bae0a0c JSC |
1997 | case fmt_uninterpreted: |
1998 | case fmt_double : | |
1999 | case fmt_long : | |
2000 | FGR[fpr] = value; | |
0c2c5f61 | 2001 | FPR_STATE[fpr] = fmt; |
8bae0a0c JSC |
2002 | break; |
2003 | ||
2004 | default : | |
0c2c5f61 | 2005 | FPR_STATE[fpr] = fmt_unknown; |
8bae0a0c JSC |
2006 | err = -1; |
2007 | break; | |
2008 | } | |
da0bce9c | 2009 | } else { |
8bae0a0c | 2010 | switch (fmt) { |
a09a30d2 AC |
2011 | case fmt_uninterpreted_32: |
2012 | fmt = fmt_uninterpreted; | |
8bae0a0c JSC |
2013 | case fmt_single : |
2014 | case fmt_word : | |
8bae0a0c | 2015 | FGR[fpr] = (value & 0xFFFFFFFF); |
0c2c5f61 | 2016 | FPR_STATE[fpr] = fmt; |
8bae0a0c JSC |
2017 | break; |
2018 | ||
a09a30d2 AC |
2019 | case fmt_uninterpreted_64: |
2020 | fmt = fmt_uninterpreted; | |
8bae0a0c JSC |
2021 | case fmt_uninterpreted: |
2022 | case fmt_double : | |
2023 | case fmt_long : | |
da0bce9c ILT |
2024 | if ((fpr & 1) == 0) { /* even register number only */ |
2025 | FGR[fpr+1] = (value >> 32); | |
2026 | FGR[fpr] = (value & 0xFFFFFFFF); | |
0c2c5f61 AC |
2027 | FPR_STATE[fpr + 1] = fmt; |
2028 | FPR_STATE[fpr] = fmt; | |
da0bce9c | 2029 | } else { |
0c2c5f61 AC |
2030 | FPR_STATE[fpr] = fmt_unknown; |
2031 | FPR_STATE[fpr + 1] = fmt_unknown; | |
18c64df6 | 2032 | SignalException(ReservedInstruction,0); |
da0bce9c | 2033 | } |
8bae0a0c JSC |
2034 | break; |
2035 | ||
2036 | default : | |
0c2c5f61 | 2037 | FPR_STATE[fpr] = fmt_unknown; |
8bae0a0c JSC |
2038 | err = -1; |
2039 | break; | |
2040 | } | |
e871dd18 JSC |
2041 | } |
2042 | #if defined(WARN_RESULT) | |
2043 | else | |
2044 | UndefinedResult(); | |
2045 | #endif /* WARN_RESULT */ | |
8bae0a0c JSC |
2046 | |
2047 | if (err) | |
18c64df6 | 2048 | SignalExceptionSimulatorFault ("Unrecognised FP format in StoreFPR()"); |
8bae0a0c JSC |
2049 | |
2050 | #ifdef DEBUG | |
53b9417e | 2051 | printf("DBG: StoreFPR: fpr[%d] = 0x%s (format %s)\n",fpr,pr_addr(FGR[fpr]),DOFMT(fmt)); |
8bae0a0c JSC |
2052 | #endif /* DEBUG */ |
2053 | ||
2054 | return; | |
2055 | } | |
2056 | ||
18c64df6 | 2057 | int |
8bae0a0c | 2058 | NaN(op,fmt) |
e871dd18 | 2059 | uword64 op; |
8bae0a0c JSC |
2060 | FP_formats fmt; |
2061 | { | |
2062 | int boolean = 0; | |
8bae0a0c JSC |
2063 | switch (fmt) { |
2064 | case fmt_single: | |
8bae0a0c | 2065 | case fmt_word: |
76ef4165 FL |
2066 | { |
2067 | sim_fpu wop; | |
2068 | sim_fpu_32to (&wop, op); | |
2069 | boolean = sim_fpu_is_nan (&wop); | |
2070 | break; | |
2071 | } | |
2072 | case fmt_double: | |
8bae0a0c | 2073 | case fmt_long: |
76ef4165 FL |
2074 | { |
2075 | sim_fpu wop; | |
2076 | sim_fpu_64to (&wop, op); | |
2077 | boolean = sim_fpu_is_nan (&wop); | |
2078 | break; | |
2079 | } | |
50a2a691 AC |
2080 | default: |
2081 | fprintf (stderr, "Bad switch\n"); | |
2082 | abort (); | |
8bae0a0c JSC |
2083 | } |
2084 | ||
2085 | #ifdef DEBUG | |
53b9417e | 2086 | printf("DBG: NaN: returning %d for 0x%s (format = %s)\n",boolean,pr_addr(op),DOFMT(fmt)); |
8bae0a0c JSC |
2087 | #endif /* DEBUG */ |
2088 | ||
2089 | return(boolean); | |
2090 | } | |
2091 | ||
18c64df6 | 2092 | int |
8bae0a0c | 2093 | Infinity(op,fmt) |
e871dd18 | 2094 | uword64 op; |
8bae0a0c JSC |
2095 | FP_formats fmt; |
2096 | { | |
2097 | int boolean = 0; | |
2098 | ||
2099 | #ifdef DEBUG | |
95469ceb | 2100 | printf("DBG: Infinity: format %s 0x%s\n",DOFMT(fmt),pr_addr(op)); |
8bae0a0c JSC |
2101 | #endif /* DEBUG */ |
2102 | ||
8bae0a0c JSC |
2103 | switch (fmt) { |
2104 | case fmt_single: | |
76ef4165 FL |
2105 | { |
2106 | sim_fpu wop; | |
2107 | sim_fpu_32to (&wop, op); | |
2108 | boolean = sim_fpu_is_infinity (&wop); | |
2109 | break; | |
2110 | } | |
8bae0a0c | 2111 | case fmt_double: |
76ef4165 FL |
2112 | { |
2113 | sim_fpu wop; | |
2114 | sim_fpu_64to (&wop, op); | |
2115 | boolean = sim_fpu_is_infinity (&wop); | |
2116 | break; | |
2117 | } | |
8bae0a0c JSC |
2118 | default: |
2119 | printf("DBG: TODO: unrecognised format (%s) for Infinity check\n",DOFMT(fmt)); | |
2120 | break; | |
2121 | } | |
2122 | ||
2123 | #ifdef DEBUG | |
53b9417e | 2124 | printf("DBG: Infinity: returning %d for 0x%s (format = %s)\n",boolean,pr_addr(op),DOFMT(fmt)); |
8bae0a0c JSC |
2125 | #endif /* DEBUG */ |
2126 | ||
2127 | return(boolean); | |
2128 | } | |
2129 | ||
18c64df6 | 2130 | int |
8bae0a0c | 2131 | Less(op1,op2,fmt) |
e871dd18 JSC |
2132 | uword64 op1; |
2133 | uword64 op2; | |
8bae0a0c JSC |
2134 | FP_formats fmt; |
2135 | { | |
2136 | int boolean = 0; | |
2137 | ||
e871dd18 JSC |
2138 | /* Argument checking already performed by the FPCOMPARE code */ |
2139 | ||
8bae0a0c | 2140 | #ifdef DEBUG |
53b9417e | 2141 | printf("DBG: Less: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); |
8bae0a0c JSC |
2142 | #endif /* DEBUG */ |
2143 | ||
8bae0a0c JSC |
2144 | /* The format type should already have been checked: */ |
2145 | switch (fmt) { | |
2146 | case fmt_single: | |
2147 | { | |
76ef4165 FL |
2148 | sim_fpu wop1; |
2149 | sim_fpu wop2; | |
2150 | sim_fpu_32to (&wop1, op1); | |
2151 | sim_fpu_32to (&wop2, op2); | |
2152 | boolean = sim_fpu_is_lt (&wop1, &wop2); | |
2153 | break; | |
8bae0a0c | 2154 | } |
8bae0a0c | 2155 | case fmt_double: |
76ef4165 FL |
2156 | { |
2157 | sim_fpu wop1; | |
2158 | sim_fpu wop2; | |
2159 | sim_fpu_64to (&wop1, op1); | |
2160 | sim_fpu_64to (&wop2, op2); | |
2161 | boolean = sim_fpu_is_lt (&wop1, &wop2); | |
2162 | break; | |
2163 | } | |
50a2a691 AC |
2164 | default: |
2165 | fprintf (stderr, "Bad switch\n"); | |
2166 | abort (); | |
8bae0a0c JSC |
2167 | } |
2168 | ||
2169 | #ifdef DEBUG | |
2170 | printf("DBG: Less: returning %d (format = %s)\n",boolean,DOFMT(fmt)); | |
2171 | #endif /* DEBUG */ | |
2172 | ||
2173 | return(boolean); | |
2174 | } | |
2175 | ||
18c64df6 | 2176 | int |
8bae0a0c | 2177 | Equal(op1,op2,fmt) |
e871dd18 JSC |
2178 | uword64 op1; |
2179 | uword64 op2; | |
8bae0a0c JSC |
2180 | FP_formats fmt; |
2181 | { | |
2182 | int boolean = 0; | |
2183 | ||
e871dd18 JSC |
2184 | /* Argument checking already performed by the FPCOMPARE code */ |
2185 | ||
8bae0a0c | 2186 | #ifdef DEBUG |
53b9417e | 2187 | printf("DBG: Equal: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); |
8bae0a0c JSC |
2188 | #endif /* DEBUG */ |
2189 | ||
8bae0a0c JSC |
2190 | /* The format type should already have been checked: */ |
2191 | switch (fmt) { | |
2192 | case fmt_single: | |
76ef4165 FL |
2193 | { |
2194 | sim_fpu wop1; | |
2195 | sim_fpu wop2; | |
2196 | sim_fpu_32to (&wop1, op1); | |
2197 | sim_fpu_32to (&wop2, op2); | |
2198 | boolean = sim_fpu_is_eq (&wop1, &wop2); | |
2199 | break; | |
2200 | } | |
8bae0a0c | 2201 | case fmt_double: |
76ef4165 FL |
2202 | { |
2203 | sim_fpu wop1; | |
2204 | sim_fpu wop2; | |
2205 | sim_fpu_64to (&wop1, op1); | |
2206 | sim_fpu_64to (&wop2, op2); | |
2207 | boolean = sim_fpu_is_eq (&wop1, &wop2); | |
2208 | break; | |
2209 | } | |
50a2a691 AC |
2210 | default: |
2211 | fprintf (stderr, "Bad switch\n"); | |
2212 | abort (); | |
8bae0a0c JSC |
2213 | } |
2214 | ||
2215 | #ifdef DEBUG | |
2216 | printf("DBG: Equal: returning %d (format = %s)\n",boolean,DOFMT(fmt)); | |
2217 | #endif /* DEBUG */ | |
2218 | ||
2219 | return(boolean); | |
2220 | } | |
2221 | ||
18c64df6 | 2222 | uword64 |
a9f7253f JSC |
2223 | AbsoluteValue(op,fmt) |
2224 | uword64 op; | |
2225 | FP_formats fmt; | |
2226 | { | |
50a2a691 | 2227 | uword64 result = 0; |
a9f7253f JSC |
2228 | |
2229 | #ifdef DEBUG | |
53b9417e | 2230 | printf("DBG: AbsoluteValue: %s: op = 0x%s\n",DOFMT(fmt),pr_addr(op)); |
a9f7253f JSC |
2231 | #endif /* DEBUG */ |
2232 | ||
2233 | /* The format type should already have been checked: */ | |
2234 | switch (fmt) { | |
2235 | case fmt_single: | |
2236 | { | |
76ef4165 FL |
2237 | sim_fpu wop; |
2238 | unsigned32 ans; | |
2239 | sim_fpu_32to (&wop, op); | |
2240 | sim_fpu_abs (&wop, &wop); | |
2241 | sim_fpu_to32 (&ans, &wop); | |
2242 | result = ans; | |
2243 | break; | |
a9f7253f | 2244 | } |
a9f7253f JSC |
2245 | case fmt_double: |
2246 | { | |
76ef4165 FL |
2247 | sim_fpu wop; |
2248 | unsigned64 ans; | |
2249 | sim_fpu_64to (&wop, op); | |
2250 | sim_fpu_abs (&wop, &wop); | |
2251 | sim_fpu_to64 (&ans, &wop); | |
2252 | result = ans; | |
2253 | break; | |
a9f7253f | 2254 | } |
50a2a691 AC |
2255 | default: |
2256 | fprintf (stderr, "Bad switch\n"); | |
2257 | abort (); | |
a9f7253f JSC |
2258 | } |
2259 | ||
2260 | return(result); | |
2261 | } | |
2262 | ||
18c64df6 | 2263 | uword64 |
8bae0a0c | 2264 | Negate(op,fmt) |
e871dd18 | 2265 | uword64 op; |
8bae0a0c JSC |
2266 | FP_formats fmt; |
2267 | { | |
50a2a691 | 2268 | uword64 result = 0; |
8bae0a0c JSC |
2269 | |
2270 | #ifdef DEBUG | |
53b9417e | 2271 | printf("DBG: Negate: %s: op = 0x%s\n",DOFMT(fmt),pr_addr(op)); |
8bae0a0c JSC |
2272 | #endif /* DEBUG */ |
2273 | ||
2274 | /* The format type should already have been checked: */ | |
2275 | switch (fmt) { | |
2276 | case fmt_single: | |
2277 | { | |
76ef4165 FL |
2278 | sim_fpu wop; |
2279 | unsigned32 ans; | |
2280 | sim_fpu_32to (&wop, op); | |
2281 | sim_fpu_neg (&wop, &wop); | |
2282 | sim_fpu_to32 (&ans, &wop); | |
2283 | result = ans; | |
2284 | break; | |
8bae0a0c | 2285 | } |
8bae0a0c JSC |
2286 | case fmt_double: |
2287 | { | |
76ef4165 FL |
2288 | sim_fpu wop; |
2289 | unsigned64 ans; | |
2290 | sim_fpu_64to (&wop, op); | |
2291 | sim_fpu_neg (&wop, &wop); | |
2292 | sim_fpu_to64 (&ans, &wop); | |
2293 | result = ans; | |
2294 | break; | |
8bae0a0c | 2295 | } |
50a2a691 AC |
2296 | default: |
2297 | fprintf (stderr, "Bad switch\n"); | |
2298 | abort (); | |
8bae0a0c JSC |
2299 | } |
2300 | ||
2301 | return(result); | |
2302 | } | |
2303 | ||
18c64df6 | 2304 | uword64 |
8bae0a0c | 2305 | Add(op1,op2,fmt) |
e871dd18 JSC |
2306 | uword64 op1; |
2307 | uword64 op2; | |
8bae0a0c JSC |
2308 | FP_formats fmt; |
2309 | { | |
50a2a691 | 2310 | uword64 result = 0; |
8bae0a0c JSC |
2311 | |
2312 | #ifdef DEBUG | |
53b9417e | 2313 | printf("DBG: Add: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); |
8bae0a0c JSC |
2314 | #endif /* DEBUG */ |
2315 | ||
e871dd18 JSC |
2316 | /* The registers must specify FPRs valid for operands of type |
2317 | "fmt". If they are not valid, the result is undefined. */ | |
8bae0a0c JSC |
2318 | |
2319 | /* The format type should already have been checked: */ | |
2320 | switch (fmt) { | |
2321 | case fmt_single: | |
2322 | { | |
76ef4165 FL |
2323 | sim_fpu wop1; |
2324 | sim_fpu wop2; | |
2325 | sim_fpu ans; | |
2326 | unsigned32 res; | |
2327 | sim_fpu_32to (&wop1, op1); | |
2328 | sim_fpu_32to (&wop2, op2); | |
2329 | sim_fpu_add (&ans, &wop1, &wop2); | |
2330 | sim_fpu_to32 (&res, &ans); | |
2331 | result = res; | |
2332 | break; | |
8bae0a0c | 2333 | } |
8bae0a0c JSC |
2334 | case fmt_double: |
2335 | { | |
76ef4165 FL |
2336 | sim_fpu wop1; |
2337 | sim_fpu wop2; | |
2338 | sim_fpu ans; | |
2339 | unsigned64 res; | |
2340 | sim_fpu_64to (&wop1, op1); | |
2341 | sim_fpu_64to (&wop2, op2); | |
2342 | sim_fpu_add (&ans, &wop1, &wop2); | |
2343 | sim_fpu_to64 (&res, &ans); | |
2344 | result = res; | |
2345 | break; | |
8bae0a0c | 2346 | } |
50a2a691 AC |
2347 | default: |
2348 | fprintf (stderr, "Bad switch\n"); | |
2349 | abort (); | |
8bae0a0c JSC |
2350 | } |
2351 | ||
2352 | #ifdef DEBUG | |
53b9417e | 2353 | printf("DBG: Add: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); |
8bae0a0c JSC |
2354 | #endif /* DEBUG */ |
2355 | ||
2356 | return(result); | |
2357 | } | |
2358 | ||
18c64df6 | 2359 | uword64 |
8bae0a0c | 2360 | Sub(op1,op2,fmt) |
e871dd18 JSC |
2361 | uword64 op1; |
2362 | uword64 op2; | |
8bae0a0c JSC |
2363 | FP_formats fmt; |
2364 | { | |
50a2a691 | 2365 | uword64 result = 0; |
8bae0a0c JSC |
2366 | |
2367 | #ifdef DEBUG | |
53b9417e | 2368 | printf("DBG: Sub: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); |
8bae0a0c JSC |
2369 | #endif /* DEBUG */ |
2370 | ||
e871dd18 JSC |
2371 | /* The registers must specify FPRs valid for operands of type |
2372 | "fmt". If they are not valid, the result is undefined. */ | |
8bae0a0c JSC |
2373 | |
2374 | /* The format type should already have been checked: */ | |
2375 | switch (fmt) { | |
2376 | case fmt_single: | |
2377 | { | |
76ef4165 FL |
2378 | sim_fpu wop1; |
2379 | sim_fpu wop2; | |
2380 | sim_fpu ans; | |
2381 | unsigned32 res; | |
2382 | sim_fpu_32to (&wop1, op1); | |
2383 | sim_fpu_32to (&wop2, op2); | |
2384 | sim_fpu_sub (&ans, &wop1, &wop2); | |
2385 | sim_fpu_to32 (&res, &ans); | |
2386 | result = res; | |
8bae0a0c JSC |
2387 | } |
2388 | break; | |
2389 | case fmt_double: | |
2390 | { | |
76ef4165 FL |
2391 | sim_fpu wop1; |
2392 | sim_fpu wop2; | |
2393 | sim_fpu ans; | |
2394 | unsigned64 res; | |
2395 | sim_fpu_64to (&wop1, op1); | |
2396 | sim_fpu_64to (&wop2, op2); | |
2397 | sim_fpu_sub (&ans, &wop1, &wop2); | |
2398 | sim_fpu_to64 (&res, &ans); | |
2399 | result = res; | |
8bae0a0c JSC |
2400 | } |
2401 | break; | |
50a2a691 AC |
2402 | default: |
2403 | fprintf (stderr, "Bad switch\n"); | |
2404 | abort (); | |
8bae0a0c JSC |
2405 | } |
2406 | ||
2407 | #ifdef DEBUG | |
53b9417e | 2408 | printf("DBG: Sub: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); |
8bae0a0c JSC |
2409 | #endif /* DEBUG */ |
2410 | ||
2411 | return(result); | |
2412 | } | |
2413 | ||
18c64df6 | 2414 | uword64 |
8bae0a0c | 2415 | Multiply(op1,op2,fmt) |
e871dd18 JSC |
2416 | uword64 op1; |
2417 | uword64 op2; | |
8bae0a0c JSC |
2418 | FP_formats fmt; |
2419 | { | |
50a2a691 | 2420 | uword64 result = 0; |
8bae0a0c JSC |
2421 | |
2422 | #ifdef DEBUG | |
53b9417e | 2423 | printf("DBG: Multiply: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); |
8bae0a0c JSC |
2424 | #endif /* DEBUG */ |
2425 | ||
e871dd18 JSC |
2426 | /* The registers must specify FPRs valid for operands of type |
2427 | "fmt". If they are not valid, the result is undefined. */ | |
8bae0a0c JSC |
2428 | |
2429 | /* The format type should already have been checked: */ | |
2430 | switch (fmt) { | |
2431 | case fmt_single: | |
2432 | { | |
76ef4165 FL |
2433 | sim_fpu wop1; |
2434 | sim_fpu wop2; | |
2435 | sim_fpu ans; | |
2436 | unsigned32 res; | |
2437 | sim_fpu_32to (&wop1, op1); | |
2438 | sim_fpu_32to (&wop2, op2); | |
2439 | sim_fpu_mul (&ans, &wop1, &wop2); | |
2440 | sim_fpu_to32 (&res, &ans); | |
2441 | result = res; | |
2442 | break; | |
8bae0a0c | 2443 | } |
8bae0a0c JSC |
2444 | case fmt_double: |
2445 | { | |
76ef4165 FL |
2446 | sim_fpu wop1; |
2447 | sim_fpu wop2; | |
2448 | sim_fpu ans; | |
2449 | unsigned64 res; | |
2450 | sim_fpu_64to (&wop1, op1); | |
2451 | sim_fpu_64to (&wop2, op2); | |
2452 | sim_fpu_mul (&ans, &wop1, &wop2); | |
2453 | sim_fpu_to64 (&res, &ans); | |
2454 | result = res; | |
2455 | break; | |
8bae0a0c | 2456 | } |
50a2a691 AC |
2457 | default: |
2458 | fprintf (stderr, "Bad switch\n"); | |
2459 | abort (); | |
8bae0a0c JSC |
2460 | } |
2461 | ||
2462 | #ifdef DEBUG | |
53b9417e | 2463 | printf("DBG: Multiply: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); |
8bae0a0c JSC |
2464 | #endif /* DEBUG */ |
2465 | ||
2466 | return(result); | |
2467 | } | |
2468 | ||
18c64df6 | 2469 | uword64 |
8bae0a0c | 2470 | Divide(op1,op2,fmt) |
e871dd18 JSC |
2471 | uword64 op1; |
2472 | uword64 op2; | |
8bae0a0c JSC |
2473 | FP_formats fmt; |
2474 | { | |
50a2a691 | 2475 | uword64 result = 0; |
8bae0a0c JSC |
2476 | |
2477 | #ifdef DEBUG | |
53b9417e | 2478 | printf("DBG: Divide: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); |
8bae0a0c JSC |
2479 | #endif /* DEBUG */ |
2480 | ||
e871dd18 JSC |
2481 | /* The registers must specify FPRs valid for operands of type |
2482 | "fmt". If they are not valid, the result is undefined. */ | |
8bae0a0c JSC |
2483 | |
2484 | /* The format type should already have been checked: */ | |
2485 | switch (fmt) { | |
2486 | case fmt_single: | |
2487 | { | |
76ef4165 FL |
2488 | sim_fpu wop1; |
2489 | sim_fpu wop2; | |
2490 | sim_fpu ans; | |
2491 | unsigned32 res; | |
2492 | sim_fpu_32to (&wop1, op1); | |
2493 | sim_fpu_32to (&wop2, op2); | |
2494 | sim_fpu_div (&ans, &wop1, &wop2); | |
2495 | sim_fpu_to32 (&res, &ans); | |
2496 | result = res; | |
2497 | break; | |
8bae0a0c | 2498 | } |
8bae0a0c JSC |
2499 | case fmt_double: |
2500 | { | |
76ef4165 FL |
2501 | sim_fpu wop1; |
2502 | sim_fpu wop2; | |
2503 | sim_fpu ans; | |
2504 | unsigned64 res; | |
2505 | sim_fpu_64to (&wop1, op1); | |
2506 | sim_fpu_64to (&wop2, op2); | |
2507 | sim_fpu_div (&ans, &wop1, &wop2); | |
2508 | sim_fpu_to64 (&res, &ans); | |
2509 | result = res; | |
2510 | break; | |
8bae0a0c | 2511 | } |
50a2a691 AC |
2512 | default: |
2513 | fprintf (stderr, "Bad switch\n"); | |
2514 | abort (); | |
8bae0a0c JSC |
2515 | } |
2516 | ||
2517 | #ifdef DEBUG | |
53b9417e | 2518 | printf("DBG: Divide: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); |
8bae0a0c JSC |
2519 | #endif /* DEBUG */ |
2520 | ||
2521 | return(result); | |
2522 | } | |
2523 | ||
18c64df6 | 2524 | uword64 UNUSED |
8bae0a0c | 2525 | Recip(op,fmt) |
e871dd18 | 2526 | uword64 op; |
8bae0a0c JSC |
2527 | FP_formats fmt; |
2528 | { | |
50a2a691 | 2529 | uword64 result = 0; |
8bae0a0c JSC |
2530 | |
2531 | #ifdef DEBUG | |
53b9417e | 2532 | printf("DBG: Recip: %s: op = 0x%s\n",DOFMT(fmt),pr_addr(op)); |
8bae0a0c JSC |
2533 | #endif /* DEBUG */ |
2534 | ||
e871dd18 JSC |
2535 | /* The registers must specify FPRs valid for operands of type |
2536 | "fmt". If they are not valid, the result is undefined. */ | |
8bae0a0c JSC |
2537 | |
2538 | /* The format type should already have been checked: */ | |
2539 | switch (fmt) { | |
2540 | case fmt_single: | |
2541 | { | |
76ef4165 FL |
2542 | sim_fpu wop; |
2543 | sim_fpu ans; | |
2544 | unsigned32 res; | |
2545 | sim_fpu_32to (&wop, op); | |
2546 | sim_fpu_inv (&ans, &wop); | |
2547 | sim_fpu_to32 (&res, &ans); | |
2548 | result = res; | |
2549 | break; | |
8bae0a0c | 2550 | } |
8bae0a0c JSC |
2551 | case fmt_double: |
2552 | { | |
76ef4165 FL |
2553 | sim_fpu wop; |
2554 | sim_fpu ans; | |
2555 | unsigned64 res; | |
2556 | sim_fpu_64to (&wop, op); | |
2557 | sim_fpu_inv (&ans, &wop); | |
2558 | sim_fpu_to64 (&res, &ans); | |
2559 | result = res; | |
2560 | break; | |
8bae0a0c | 2561 | } |
50a2a691 AC |
2562 | default: |
2563 | fprintf (stderr, "Bad switch\n"); | |
2564 | abort (); | |
8bae0a0c JSC |
2565 | } |
2566 | ||
2567 | #ifdef DEBUG | |
53b9417e | 2568 | printf("DBG: Recip: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); |
8bae0a0c JSC |
2569 | #endif /* DEBUG */ |
2570 | ||
2571 | return(result); | |
2572 | } | |
2573 | ||
18c64df6 | 2574 | uword64 |
8bae0a0c | 2575 | SquareRoot(op,fmt) |
e871dd18 | 2576 | uword64 op; |
8bae0a0c JSC |
2577 | FP_formats fmt; |
2578 | { | |
50a2a691 | 2579 | uword64 result = 0; |
8bae0a0c JSC |
2580 | |
2581 | #ifdef DEBUG | |
53b9417e | 2582 | printf("DBG: SquareRoot: %s: op = 0x%s\n",DOFMT(fmt),pr_addr(op)); |
8bae0a0c JSC |
2583 | #endif /* DEBUG */ |
2584 | ||
e871dd18 JSC |
2585 | /* The registers must specify FPRs valid for operands of type |
2586 | "fmt". If they are not valid, the result is undefined. */ | |
8bae0a0c JSC |
2587 | |
2588 | /* The format type should already have been checked: */ | |
2589 | switch (fmt) { | |
2590 | case fmt_single: | |
2591 | { | |
76ef4165 FL |
2592 | sim_fpu wop; |
2593 | sim_fpu ans; | |
2594 | unsigned32 res; | |
2595 | sim_fpu_32to (&wop, op); | |
2596 | sim_fpu_sqrt (&ans, &wop); | |
2597 | sim_fpu_to32 (&res, &ans); | |
2598 | result = res; | |
2599 | break; | |
8bae0a0c | 2600 | } |
8bae0a0c JSC |
2601 | case fmt_double: |
2602 | { | |
76ef4165 FL |
2603 | sim_fpu wop; |
2604 | sim_fpu ans; | |
2605 | unsigned64 res; | |
2606 | sim_fpu_64to (&wop, op); | |
2607 | sim_fpu_sqrt (&ans, &wop); | |
2608 | sim_fpu_to64 (&res, &ans); | |
2609 | result = res; | |
2610 | break; | |
8bae0a0c | 2611 | } |
50a2a691 AC |
2612 | default: |
2613 | fprintf (stderr, "Bad switch\n"); | |
2614 | abort (); | |
8bae0a0c JSC |
2615 | } |
2616 | ||
2617 | #ifdef DEBUG | |
53b9417e | 2618 | printf("DBG: SquareRoot: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); |
8bae0a0c JSC |
2619 | #endif /* DEBUG */ |
2620 | ||
2621 | return(result); | |
2622 | } | |
2623 | ||
82ea14fd | 2624 | #if 0 |
a48e8c8d AC |
2625 | uword64 |
2626 | Max (uword64 op1, | |
2627 | uword64 op2, | |
2628 | FP_formats fmt) | |
2629 | { | |
2630 | int cmp; | |
2631 | unsigned64 result; | |
2632 | ||
2633 | #ifdef DEBUG | |
2634 | printf("DBG: Max: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); | |
2635 | #endif /* DEBUG */ | |
2636 | ||
2637 | /* The registers must specify FPRs valid for operands of type | |
2638 | "fmt". If they are not valid, the result is undefined. */ | |
2639 | ||
2640 | /* The format type should already have been checked: */ | |
2641 | switch (fmt) | |
2642 | { | |
2643 | case fmt_single: | |
2644 | { | |
2645 | sim_fpu wop1; | |
2646 | sim_fpu wop2; | |
2647 | sim_fpu_32to (&wop1, op1); | |
2648 | sim_fpu_32to (&wop2, op2); | |
2649 | cmp = sim_fpu_cmp (&wop1, &wop2); | |
2650 | break; | |
2651 | } | |
2652 | case fmt_double: | |
2653 | { | |
2654 | sim_fpu wop1; | |
2655 | sim_fpu wop2; | |
2656 | sim_fpu_64to (&wop1, op1); | |
2657 | sim_fpu_64to (&wop2, op2); | |
2658 | cmp = sim_fpu_cmp (&wop1, &wop2); | |
2659 | break; | |
2660 | } | |
2661 | default: | |
2662 | fprintf (stderr, "Bad switch\n"); | |
2663 | abort (); | |
2664 | } | |
2665 | ||
2666 | switch (cmp) | |
2667 | { | |
2668 | case SIM_FPU_IS_SNAN: | |
2669 | case SIM_FPU_IS_QNAN: | |
2670 | result = op1; | |
2671 | case SIM_FPU_IS_NINF: | |
2672 | case SIM_FPU_IS_NNUMBER: | |
2673 | case SIM_FPU_IS_NDENORM: | |
2674 | case SIM_FPU_IS_NZERO: | |
2675 | result = op2; /* op1 - op2 < 0 */ | |
2676 | case SIM_FPU_IS_PINF: | |
2677 | case SIM_FPU_IS_PNUMBER: | |
2678 | case SIM_FPU_IS_PDENORM: | |
2679 | case SIM_FPU_IS_PZERO: | |
2680 | result = op1; /* op1 - op2 > 0 */ | |
2681 | default: | |
2682 | fprintf (stderr, "Bad switch\n"); | |
2683 | abort (); | |
2684 | } | |
2685 | ||
2686 | #ifdef DEBUG | |
2687 | printf("DBG: Max: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); | |
2688 | #endif /* DEBUG */ | |
2689 | ||
2690 | return(result); | |
2691 | } | |
82ea14fd | 2692 | #endif |
a48e8c8d | 2693 | |
82ea14fd | 2694 | #if 0 |
a48e8c8d AC |
2695 | uword64 |
2696 | Min (uword64 op1, | |
2697 | uword64 op2, | |
2698 | FP_formats fmt) | |
2699 | { | |
2700 | int cmp; | |
2701 | unsigned64 result; | |
2702 | ||
2703 | #ifdef DEBUG | |
2704 | printf("DBG: Min: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); | |
2705 | #endif /* DEBUG */ | |
2706 | ||
2707 | /* The registers must specify FPRs valid for operands of type | |
2708 | "fmt". If they are not valid, the result is undefined. */ | |
2709 | ||
2710 | /* The format type should already have been checked: */ | |
2711 | switch (fmt) | |
2712 | { | |
2713 | case fmt_single: | |
2714 | { | |
2715 | sim_fpu wop1; | |
2716 | sim_fpu wop2; | |
2717 | sim_fpu_32to (&wop1, op1); | |
2718 | sim_fpu_32to (&wop2, op2); | |
2719 | cmp = sim_fpu_cmp (&wop1, &wop2); | |
2720 | break; | |
2721 | } | |
2722 | case fmt_double: | |
2723 | { | |
2724 | sim_fpu wop1; | |
2725 | sim_fpu wop2; | |
2726 | sim_fpu_64to (&wop1, op1); | |
2727 | sim_fpu_64to (&wop2, op2); | |
2728 | cmp = sim_fpu_cmp (&wop1, &wop2); | |
2729 | break; | |
2730 | } | |
2731 | default: | |
2732 | fprintf (stderr, "Bad switch\n"); | |
2733 | abort (); | |
2734 | } | |
2735 | ||
2736 | switch (cmp) | |
2737 | { | |
2738 | case SIM_FPU_IS_SNAN: | |
2739 | case SIM_FPU_IS_QNAN: | |
2740 | result = op1; | |
2741 | case SIM_FPU_IS_NINF: | |
2742 | case SIM_FPU_IS_NNUMBER: | |
2743 | case SIM_FPU_IS_NDENORM: | |
2744 | case SIM_FPU_IS_NZERO: | |
2745 | result = op1; /* op1 - op2 < 0 */ | |
2746 | case SIM_FPU_IS_PINF: | |
2747 | case SIM_FPU_IS_PNUMBER: | |
2748 | case SIM_FPU_IS_PDENORM: | |
2749 | case SIM_FPU_IS_PZERO: | |
2750 | result = op2; /* op1 - op2 > 0 */ | |
2751 | default: | |
2752 | fprintf (stderr, "Bad switch\n"); | |
2753 | abort (); | |
2754 | } | |
2755 | ||
2756 | #ifdef DEBUG | |
2757 | printf("DBG: Min: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); | |
2758 | #endif /* DEBUG */ | |
2759 | ||
2760 | return(result); | |
2761 | } | |
82ea14fd | 2762 | #endif |
a48e8c8d | 2763 | |
18c64df6 | 2764 | uword64 |
01737f42 AC |
2765 | convert (SIM_DESC sd, |
2766 | sim_cpu *cpu, | |
2767 | address_word cia, | |
2768 | int rm, | |
2769 | uword64 op, | |
2770 | FP_formats from, | |
2771 | FP_formats to) | |
8bae0a0c | 2772 | { |
76ef4165 FL |
2773 | sim_fpu wop; |
2774 | sim_fpu_round round; | |
2775 | unsigned32 result32; | |
2776 | unsigned64 result64; | |
8bae0a0c JSC |
2777 | |
2778 | #ifdef DEBUG | |
53b9417e | 2779 | printf("DBG: Convert: mode %s : op 0x%s : from %s : to %s : (PC = 0x%s)\n",RMMODE(rm),pr_addr(op),DOFMT(from),DOFMT(to),pr_addr(IPC)); |
8bae0a0c JSC |
2780 | #endif /* DEBUG */ |
2781 | ||
76ef4165 | 2782 | switch (rm) |
8bae0a0c | 2783 | { |
76ef4165 FL |
2784 | case FP_RM_NEAREST: |
2785 | /* Round result to nearest representable value. When two | |
2786 | representable values are equally near, round to the value | |
2787 | that has a least significant bit of zero (i.e. is even). */ | |
2788 | round = sim_fpu_round_near; | |
2789 | break; | |
2790 | case FP_RM_TOZERO: | |
2791 | /* Round result to the value closest to, and not greater in | |
2792 | magnitude than, the result. */ | |
2793 | round = sim_fpu_round_zero; | |
2794 | break; | |
2795 | case FP_RM_TOPINF: | |
2796 | /* Round result to the value closest to, and not less than, | |
2797 | the result. */ | |
2798 | round = sim_fpu_round_up; | |
2799 | break; | |
2800 | ||
2801 | case FP_RM_TOMINF: | |
2802 | /* Round result to the value closest to, and not greater than, | |
2803 | the result. */ | |
2804 | round = sim_fpu_round_down; | |
2805 | break; | |
2806 | default: | |
2807 | round = 0; | |
2808 | fprintf (stderr, "Bad switch\n"); | |
2809 | abort (); | |
8bae0a0c | 2810 | } |
76ef4165 FL |
2811 | |
2812 | /* Convert the input to sim_fpu internal format */ | |
2813 | switch (from) | |
8bae0a0c | 2814 | { |
76ef4165 FL |
2815 | case fmt_double: |
2816 | sim_fpu_64to (&wop, op); | |
2817 | break; | |
2818 | case fmt_single: | |
2819 | sim_fpu_32to (&wop, op); | |
2820 | break; | |
2821 | case fmt_word: | |
2822 | sim_fpu_i32to (&wop, op, round); | |
2823 | break; | |
2824 | case fmt_long: | |
2825 | sim_fpu_i64to (&wop, op, round); | |
2826 | break; | |
2827 | default: | |
2828 | fprintf (stderr, "Bad switch\n"); | |
2829 | abort (); | |
8bae0a0c | 2830 | } |
8bae0a0c | 2831 | |
76ef4165 FL |
2832 | /* Convert sim_fpu format into the output */ |
2833 | /* The value WOP is converted to the destination format, rounding | |
2834 | using mode RM. When the destination is a fixed-point format, then | |
2835 | a source value of Infinity, NaN or one which would round to an | |
2836 | integer outside the fixed point range then an IEEE Invalid | |
2837 | Operation condition is raised. */ | |
2838 | switch (to) | |
2839 | { | |
2840 | case fmt_single: | |
2841 | sim_fpu_round_32 (&wop, round, 0); | |
2842 | sim_fpu_to32 (&result32, &wop); | |
2843 | result64 = result32; | |
2844 | break; | |
2845 | case fmt_double: | |
2846 | sim_fpu_round_64 (&wop, round, 0); | |
2847 | sim_fpu_to64 (&result64, &wop); | |
2848 | break; | |
2849 | case fmt_word: | |
2850 | sim_fpu_to32i (&result32, &wop, round); | |
2851 | result64 = result32; | |
2852 | break; | |
2853 | case fmt_long: | |
2854 | sim_fpu_to64i (&result64, &wop, round); | |
2855 | break; | |
2856 | default: | |
2857 | result64 = 0; | |
2858 | fprintf (stderr, "Bad switch\n"); | |
2859 | abort (); | |
8bae0a0c | 2860 | } |
76ef4165 | 2861 | |
8bae0a0c | 2862 | #ifdef DEBUG |
76ef4165 | 2863 | printf("DBG: Convert: returning 0x%s (to format = %s)\n",pr_addr(result64),DOFMT(to)); |
8bae0a0c JSC |
2864 | #endif /* DEBUG */ |
2865 | ||
76ef4165 | 2866 | return(result64); |
8bae0a0c | 2867 | } |
8bae0a0c | 2868 | |
76ef4165 | 2869 | |
8bae0a0c JSC |
2870 | /*-- co-processor support routines ------------------------------------------*/ |
2871 | ||
2f2e6c5d | 2872 | static int UNUSED |
8bae0a0c JSC |
2873 | CoProcPresent(coproc_number) |
2874 | unsigned int coproc_number; | |
2875 | { | |
2876 | /* Return TRUE if simulator provides a model for the given co-processor number */ | |
2877 | return(0); | |
2878 | } | |
2879 | ||
18c64df6 | 2880 | void |
01737f42 AC |
2881 | cop_lw (SIM_DESC sd, |
2882 | sim_cpu *cpu, | |
2883 | address_word cia, | |
2884 | int coproc_num, | |
2885 | int coproc_reg, | |
2886 | unsigned int memword) | |
8bae0a0c | 2887 | { |
192ae475 AC |
2888 | switch (coproc_num) |
2889 | { | |
8bae0a0c | 2890 | case 1: |
192ae475 AC |
2891 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) |
2892 | { | |
8bae0a0c | 2893 | #ifdef DEBUG |
192ae475 | 2894 | printf("DBG: COP_LW: memword = 0x%08X (uword64)memword = 0x%s\n",memword,pr_addr(memword)); |
8bae0a0c | 2895 | #endif |
192ae475 AC |
2896 | StoreFPR(coproc_reg,fmt_word,(uword64)memword); |
2897 | FPR_STATE[coproc_reg] = fmt_uninterpreted; | |
2898 | break; | |
2899 | } | |
8bae0a0c JSC |
2900 | |
2901 | default: | |
f24b7b69 | 2902 | #if 0 /* this should be controlled by a configuration option */ |
192ae475 | 2903 | sim_io_printf(sd,"COP_LW(%d,%d,0x%08X) at PC = 0x%s : TODO (architecture specific)\n",coproc_num,coproc_reg,memword,pr_addr(cia)); |
f24b7b69 | 2904 | #endif |
192ae475 AC |
2905 | break; |
2906 | } | |
8bae0a0c JSC |
2907 | |
2908 | return; | |
2909 | } | |
2910 | ||
18c64df6 | 2911 | void |
01737f42 AC |
2912 | cop_ld (SIM_DESC sd, |
2913 | sim_cpu *cpu, | |
2914 | address_word cia, | |
2915 | int coproc_num, | |
2916 | int coproc_reg, | |
2917 | uword64 memword) | |
8bae0a0c JSC |
2918 | { |
2919 | switch (coproc_num) { | |
8bae0a0c | 2920 | case 1: |
192ae475 AC |
2921 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) |
2922 | { | |
2923 | StoreFPR(coproc_reg,fmt_uninterpreted,memword); | |
2924 | break; | |
2925 | } | |
8bae0a0c JSC |
2926 | |
2927 | default: | |
f24b7b69 | 2928 | #if 0 /* this message should be controlled by a configuration option */ |
95469ceb | 2929 | sim_io_printf(sd,"COP_LD(%d,%d,0x%s) at PC = 0x%s : TODO (architecture specific)\n",coproc_num,coproc_reg,pr_addr(memword),pr_addr(cia)); |
f24b7b69 | 2930 | #endif |
8bae0a0c JSC |
2931 | break; |
2932 | } | |
2933 | ||
2934 | return; | |
2935 | } | |
2936 | ||
15232df4 | 2937 | |
6ed00b06 FCE |
2938 | /* start-sanitize-sky */ |
2939 | #ifdef TARGET_SKY | |
15232df4 FCE |
2940 | void |
2941 | cop_lq (SIM_DESC sd, | |
2942 | sim_cpu *cpu, | |
2943 | address_word cia, | |
2944 | int coproc_num, | |
2945 | int coproc_reg, | |
2946 | unsigned128 memword) | |
2947 | { | |
2948 | switch (coproc_num) | |
2949 | { | |
15232df4 | 2950 | case 2: |
2ebb2a68 FCE |
2951 | { |
2952 | unsigned_16 xyzw; | |
2953 | ||
2954 | while(vu0_busy()) | |
2955 | vu0_issue(sd); | |
2956 | ||
2957 | memcpy(& xyzw, & memword, sizeof(xyzw)); | |
2958 | xyzw = H2T_16(xyzw); | |
2959 | /* one word at a time, argh! */ | |
2960 | write_vu_vec_reg(&(vu0_device.regs), coproc_reg, 0, A4_16(& xyzw, 3)); | |
2961 | write_vu_vec_reg(&(vu0_device.regs), coproc_reg, 1, A4_16(& xyzw, 2)); | |
2962 | write_vu_vec_reg(&(vu0_device.regs), coproc_reg, 2, A4_16(& xyzw, 1)); | |
2963 | write_vu_vec_reg(&(vu0_device.regs), coproc_reg, 3, A4_16(& xyzw, 0)); | |
2964 | } | |
2965 | break; | |
2966 | ||
15232df4 FCE |
2967 | default: |
2968 | sim_io_printf(sd,"COP_LQ(%d,%d,??) at PC = 0x%s : TODO (architecture specific)\n", | |
2969 | coproc_num,coproc_reg,pr_addr(cia)); | |
2970 | break; | |
2971 | } | |
2972 | ||
2973 | return; | |
2974 | } | |
6ed00b06 FCE |
2975 | #endif /* TARGET_SKY */ |
2976 | /* end-sanitize-sky */ | |
15232df4 FCE |
2977 | |
2978 | ||
18c64df6 | 2979 | unsigned int |
01737f42 AC |
2980 | cop_sw (SIM_DESC sd, |
2981 | sim_cpu *cpu, | |
2982 | address_word cia, | |
2983 | int coproc_num, | |
2984 | int coproc_reg) | |
8bae0a0c JSC |
2985 | { |
2986 | unsigned int value = 0; | |
da0bce9c | 2987 | |
192ae475 AC |
2988 | switch (coproc_num) |
2989 | { | |
8bae0a0c | 2990 | case 1: |
192ae475 AC |
2991 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) |
2992 | { | |
2993 | FP_formats hold; | |
2994 | hold = FPR_STATE[coproc_reg]; | |
2995 | FPR_STATE[coproc_reg] = fmt_word; | |
2996 | value = (unsigned int)ValueFPR(coproc_reg,fmt_uninterpreted); | |
2997 | FPR_STATE[coproc_reg] = hold; | |
2998 | break; | |
2999 | } | |
8bae0a0c JSC |
3000 | |
3001 | default: | |
f24b7b69 | 3002 | #if 0 /* should be controlled by configuration option */ |
192ae475 | 3003 | sim_io_printf(sd,"COP_SW(%d,%d) at PC = 0x%s : TODO (architecture specific)\n",coproc_num,coproc_reg,pr_addr(cia)); |
f24b7b69 | 3004 | #endif |
192ae475 AC |
3005 | break; |
3006 | } | |
8bae0a0c JSC |
3007 | |
3008 | return(value); | |
3009 | } | |
3010 | ||
18c64df6 | 3011 | uword64 |
01737f42 AC |
3012 | cop_sd (SIM_DESC sd, |
3013 | sim_cpu *cpu, | |
3014 | address_word cia, | |
3015 | int coproc_num, | |
3016 | int coproc_reg) | |
8bae0a0c | 3017 | { |
e871dd18 | 3018 | uword64 value = 0; |
192ae475 AC |
3019 | switch (coproc_num) |
3020 | { | |
8bae0a0c | 3021 | case 1: |
192ae475 AC |
3022 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) |
3023 | { | |
3024 | value = ValueFPR(coproc_reg,fmt_uninterpreted); | |
3025 | break; | |
3026 | } | |
8bae0a0c JSC |
3027 | |
3028 | default: | |
f24b7b69 | 3029 | #if 0 /* should be controlled by configuration option */ |
192ae475 | 3030 | sim_io_printf(sd,"COP_SD(%d,%d) at PC = 0x%s : TODO (architecture specific)\n",coproc_num,coproc_reg,pr_addr(cia)); |
f24b7b69 | 3031 | #endif |
192ae475 AC |
3032 | break; |
3033 | } | |
8bae0a0c JSC |
3034 | |
3035 | return(value); | |
3036 | } | |
3037 | ||
15232df4 | 3038 | |
6ed00b06 FCE |
3039 | /* start-sanitize-sky */ |
3040 | #ifdef TARGET_SKY | |
15232df4 FCE |
3041 | unsigned128 |
3042 | cop_sq (SIM_DESC sd, | |
3043 | sim_cpu *cpu, | |
3044 | address_word cia, | |
3045 | int coproc_num, | |
3046 | int coproc_reg) | |
3047 | { | |
6ed00b06 | 3048 | unsigned128 value = U16_8(0, 0); |
15232df4 FCE |
3049 | switch (coproc_num) |
3050 | { | |
15232df4 | 3051 | case 2: |
2ebb2a68 FCE |
3052 | { |
3053 | unsigned_16 xyzw; | |
3054 | ||
3055 | while(vu0_busy()) | |
3056 | vu0_issue(sd); | |
3057 | ||
3058 | /* one word at a time, argh! */ | |
3059 | read_vu_vec_reg(&(vu0_device.regs), coproc_reg, 0, A4_16(& xyzw, 3)); | |
3060 | read_vu_vec_reg(&(vu0_device.regs), coproc_reg, 1, A4_16(& xyzw, 2)); | |
3061 | read_vu_vec_reg(&(vu0_device.regs), coproc_reg, 2, A4_16(& xyzw, 1)); | |
3062 | read_vu_vec_reg(&(vu0_device.regs), coproc_reg, 3, A4_16(& xyzw, 0)); | |
3063 | xyzw = T2H_16(xyzw); | |
3064 | return xyzw; | |
3065 | } | |
3066 | break; | |
3067 | ||
15232df4 FCE |
3068 | default: |
3069 | sim_io_printf(sd,"COP_SQ(%d,%d) at PC = 0x%s : TODO (architecture specific)\n", | |
3070 | coproc_num,coproc_reg,pr_addr(cia)); | |
3071 | break; | |
3072 | } | |
3073 | ||
3074 | return(value); | |
3075 | } | |
6ed00b06 FCE |
3076 | #endif /* TARGET_SKY */ |
3077 | /* end-sanitize-sky */ | |
15232df4 FCE |
3078 | |
3079 | ||
ea985d24 | 3080 | void |
01737f42 AC |
3081 | decode_coproc (SIM_DESC sd, |
3082 | sim_cpu *cpu, | |
3083 | address_word cia, | |
3084 | unsigned int instruction) | |
8bae0a0c JSC |
3085 | { |
3086 | int coprocnum = ((instruction >> 26) & 3); | |
3087 | ||
56e7c849 AC |
3088 | switch (coprocnum) |
3089 | { | |
8bae0a0c JSC |
3090 | case 0: /* standard CPU control and cache registers */ |
3091 | { | |
8bae0a0c JSC |
3092 | int code = ((instruction >> 21) & 0x1F); |
3093 | /* R4000 Users Manual (second edition) lists the following CP0 | |
3094 | instructions: | |
56e7c849 AC |
3095 | DMFC0 Doubleword Move From CP0 (VR4100 = 01000000001tttttddddd00000000000) |
3096 | DMTC0 Doubleword Move To CP0 (VR4100 = 01000000101tttttddddd00000000000) | |
3097 | MFC0 word Move From CP0 (VR4100 = 01000000000tttttddddd00000000000) | |
3098 | MTC0 word Move To CP0 (VR4100 = 01000000100tttttddddd00000000000) | |
3099 | TLBR Read Indexed TLB Entry (VR4100 = 01000010000000000000000000000001) | |
3100 | TLBWI Write Indexed TLB Entry (VR4100 = 01000010000000000000000000000010) | |
3101 | TLBWR Write Random TLB Entry (VR4100 = 01000010000000000000000000000110) | |
3102 | TLBP Probe TLB for Matching Entry (VR4100 = 01000010000000000000000000001000) | |
3103 | CACHE Cache operation (VR4100 = 101111bbbbbpppppiiiiiiiiiiiiiiii) | |
3104 | ERET Exception return (VR4100 = 01000010000000000000000000011000) | |
3105 | */ | |
3106 | if (((code == 0x00) || (code == 0x04)) && ((instruction & 0x7FF) == 0)) | |
3107 | { | |
3108 | int rt = ((instruction >> 16) & 0x1F); | |
3109 | int rd = ((instruction >> 11) & 0x1F); | |
3110 | ||
3111 | switch (rd) /* NOTEs: Standard CP0 registers */ | |
3112 | { | |
3113 | /* 0 = Index R4000 VR4100 VR4300 */ | |
3114 | /* 1 = Random R4000 VR4100 VR4300 */ | |
3115 | /* 2 = EntryLo0 R4000 VR4100 VR4300 */ | |
3116 | /* 3 = EntryLo1 R4000 VR4100 VR4300 */ | |
3117 | /* 4 = Context R4000 VR4100 VR4300 */ | |
3118 | /* 5 = PageMask R4000 VR4100 VR4300 */ | |
3119 | /* 6 = Wired R4000 VR4100 VR4300 */ | |
3120 | /* 8 = BadVAddr R4000 VR4100 VR4300 */ | |
3121 | /* 9 = Count R4000 VR4100 VR4300 */ | |
3122 | /* 10 = EntryHi R4000 VR4100 VR4300 */ | |
3123 | /* 11 = Compare R4000 VR4100 VR4300 */ | |
3124 | /* 12 = SR R4000 VR4100 VR4300 */ | |
3125 | case 12: | |
3126 | if (code == 0x00) | |
3127 | GPR[rt] = SR; | |
3128 | else | |
3129 | SR = GPR[rt]; | |
3130 | break; | |
3131 | /* 13 = Cause R4000 VR4100 VR4300 */ | |
05d1322f JL |
3132 | case 13: |
3133 | if (code == 0x00) | |
3134 | GPR[rt] = CAUSE; | |
3135 | else | |
3136 | CAUSE = GPR[rt]; | |
3137 | break; | |
56e7c849 AC |
3138 | /* 14 = EPC R4000 VR4100 VR4300 */ |
3139 | /* 15 = PRId R4000 VR4100 VR4300 */ | |
6eedf3f4 MA |
3140 | #ifdef SUBTARGET_R3900 |
3141 | /* 16 = Debug */ | |
3142 | case 16: | |
3143 | if (code == 0x00) | |
3144 | GPR[rt] = Debug; | |
3145 | else | |
3146 | Debug = GPR[rt]; | |
3147 | break; | |
3148 | #else | |
56e7c849 | 3149 | /* 16 = Config R4000 VR4100 VR4300 */ |
a09a30d2 AC |
3150 | case 16: |
3151 | if (code == 0x00) | |
3152 | GPR[rt] = C0_CONFIG; | |
3153 | else | |
3154 | C0_CONFIG = GPR[rt]; | |
3155 | break; | |
6eedf3f4 MA |
3156 | #endif |
3157 | #ifdef SUBTARGET_R3900 | |
3158 | /* 17 = Debug */ | |
3159 | case 17: | |
3160 | if (code == 0x00) | |
3161 | GPR[rt] = DEPC; | |
3162 | else | |
3163 | DEPC = GPR[rt]; | |
3164 | break; | |
3165 | #else | |
56e7c849 | 3166 | /* 17 = LLAddr R4000 VR4100 VR4300 */ |
6eedf3f4 | 3167 | #endif |
56e7c849 AC |
3168 | /* 18 = WatchLo R4000 VR4100 VR4300 */ |
3169 | /* 19 = WatchHi R4000 VR4100 VR4300 */ | |
3170 | /* 20 = XContext R4000 VR4100 VR4300 */ | |
3171 | /* 26 = PErr or ECC R4000 VR4100 VR4300 */ | |
3172 | /* 27 = CacheErr R4000 VR4100 */ | |
3173 | /* 28 = TagLo R4000 VR4100 VR4300 */ | |
3174 | /* 29 = TagHi R4000 VR4100 VR4300 */ | |
3175 | /* 30 = ErrorEPC R4000 VR4100 VR4300 */ | |
3176 | GPR[rt] = 0xDEADC0DE; /* CPR[0,rd] */ | |
3177 | /* CPR[0,rd] = GPR[rt]; */ | |
3178 | default: | |
3179 | if (code == 0x00) | |
18c64df6 | 3180 | sim_io_printf(sd,"Warning: MFC0 %d,%d ignored (architecture specific)\n",rt,rd); |
56e7c849 | 3181 | else |
18c64df6 | 3182 | sim_io_printf(sd,"Warning: MTC0 %d,%d ignored (architecture specific)\n",rt,rd); |
56e7c849 AC |
3183 | } |
3184 | } | |
3185 | else if (code == 0x10 && (instruction & 0x3f) == 0x18) | |
3186 | { | |
3187 | /* ERET */ | |
3188 | if (SR & status_ERL) | |
3189 | { | |
3190 | /* Oops, not yet available */ | |
18c64df6 | 3191 | sim_io_printf(sd,"Warning: ERET when SR[ERL] set not handled yet"); |
56e7c849 AC |
3192 | PC = EPC; |
3193 | SR &= ~status_ERL; | |
3194 | } | |
3195 | else | |
3196 | { | |
3197 | PC = EPC; | |
3198 | SR &= ~status_EXL; | |
3199 | } | |
3200 | } | |
6eedf3f4 MA |
3201 | else if (code == 0x10 && (instruction & 0x3f) == 0x10) |
3202 | { | |
3203 | /* RFE */ | |
3204 | } | |
3205 | else if (code == 0x10 && (instruction & 0x3f) == 0x1F) | |
3206 | { | |
3207 | /* DERET */ | |
3208 | Debug &= ~Debug_DM; | |
3209 | DELAYSLOT(); | |
3210 | DSPC = DEPC; | |
3211 | } | |
56e7c849 | 3212 | else |
95469ceb | 3213 | sim_io_eprintf(sd,"Unrecognised COP0 instruction 0x%08X at PC = 0x%s : No handler present\n",instruction,pr_addr(cia)); |
e871dd18 | 3214 | /* TODO: When executing an ERET or RFE instruction we should |
8bae0a0c JSC |
3215 | clear LLBIT, to ensure that any out-standing atomic |
3216 | read/modify/write sequence fails. */ | |
3217 | } | |
56e7c849 AC |
3218 | break; |
3219 | ||
ebcfd86a | 3220 | case 2: /* co-processor 2 */ |
15232df4 FCE |
3221 | { |
3222 | int handle = 0; | |
3223 | ||
3224 | /* start-sanitize-sky */ | |
7dd4a466 | 3225 | #ifdef TARGET_SKY |
15232df4 FCE |
3226 | /* On the R5900, this refers to a "VU" vector co-processor. */ |
3227 | ||
3228 | int i_25_21 = (instruction >> 21) & 0x1f; | |
3229 | int i_20_16 = (instruction >> 16) & 0x1f; | |
ebcfd86a | 3230 | int i_20_6 = (instruction >> 6) & 0x7fff; |
15232df4 FCE |
3231 | int i_15_11 = (instruction >> 11) & 0x1f; |
3232 | int i_15_0 = instruction & 0xffff; | |
3233 | int i_10_1 = (instruction >> 1) & 0x3ff; | |
ebcfd86a FCE |
3234 | int i_10_0 = instruction & 0x7ff; |
3235 | int i_10_6 = (instruction >> 6) & 0x1f; | |
6ed00b06 | 3236 | int i_5_0 = instruction & 0x03f; |
15232df4 | 3237 | int interlock = instruction & 0x01; |
15232df4 FCE |
3238 | /* setup for semantic.c-like actions below */ |
3239 | typedef unsigned_4 instruction_word; | |
3240 | int CIA = cia; | |
3241 | int NIA = cia + 4; | |
3242 | sim_cpu* CPU_ = cpu; | |
3243 | ||
3244 | handle = 1; | |
3245 | ||
3246 | /* test COP2 usability */ | |
3247 | if(! (SR & status_CU2)) | |
3248 | { | |
3249 | SignalException(CoProcessorUnusable,instruction); | |
3250 | /* NOTREACHED */ | |
3251 | } | |
3252 | ||
3253 | /* classify & execute basic COP2 instructions */ | |
3254 | if(i_25_21 == 0x08 && i_20_16 == 0x00) /* BC2F */ | |
3255 | { | |
3256 | address_word offset = EXTEND16(i_15_0) << 2; | |
6ed00b06 | 3257 | if(! vu0_busy()) DELAY_SLOT(cia + 4 + offset); |
15232df4 FCE |
3258 | } |
3259 | else if(i_25_21 == 0x08 && i_20_16==0x02) /* BC2FL */ | |
3260 | { | |
3261 | address_word offset = EXTEND16(i_15_0) << 2; | |
6ed00b06 | 3262 | if(! vu0_busy()) DELAY_SLOT(cia + 4 + offset); |
15232df4 FCE |
3263 | else NULLIFY_NEXT_INSTRUCTION(); |
3264 | } | |
3265 | else if(i_25_21 == 0x08 && i_20_16 == 0x01) /* BC2T */ | |
3266 | { | |
3267 | address_word offset = EXTEND16(i_15_0) << 2; | |
6ed00b06 | 3268 | if(vu0_busy()) DELAY_SLOT(cia + 4 + offset); |
15232df4 FCE |
3269 | } |
3270 | else if(i_25_21 == 0x08 && i_20_16 == 0x03) /* BC2TL */ | |
3271 | { | |
3272 | address_word offset = EXTEND16(i_15_0) << 2; | |
6ed00b06 | 3273 | if(vu0_busy()) DELAY_SLOT(cia + 4 + offset); |
15232df4 FCE |
3274 | else NULLIFY_NEXT_INSTRUCTION(); |
3275 | } | |
3276 | else if((i_25_21 == 0x02 && i_10_1 == 0x000) || /* CFC2 */ | |
6ed00b06 | 3277 | (i_25_21 == 0x01)) /* QMFC2 */ |
15232df4 FCE |
3278 | { |
3279 | int rt = i_20_16; | |
3280 | int id = i_15_11; | |
15232df4 | 3281 | |
6ed00b06 | 3282 | /* interlock checking */ |
ebcfd86a FCE |
3283 | /* POLICY: never busy in macro mode */ |
3284 | while(vu0_busy() && interlock) | |
3285 | vu0_issue(sd); | |
6ed00b06 | 3286 | |
ebcfd86a FCE |
3287 | /* perform VU register address */ |
3288 | if(i_25_21 == 0x01) /* QMFC2 */ | |
15232df4 | 3289 | { |
ebcfd86a FCE |
3290 | unsigned_16 xyzw; |
3291 | /* one word at a time, argh! */ | |
3292 | read_vu_vec_reg(&(vu0_device.regs), id, 0, A4_16(& xyzw, 3)); | |
3293 | read_vu_vec_reg(&(vu0_device.regs), id, 1, A4_16(& xyzw, 2)); | |
3294 | read_vu_vec_reg(&(vu0_device.regs), id, 2, A4_16(& xyzw, 1)); | |
3295 | read_vu_vec_reg(&(vu0_device.regs), id, 3, A4_16(& xyzw, 0)); | |
3296 | xyzw = T2H_16(xyzw); | |
3297 | memcpy(& GPR[rt], & xyzw, sizeof(xyzw)); | |
15232df4 | 3298 | } |
6ed00b06 | 3299 | else /* CFC2 */ |
ebcfd86a FCE |
3300 | { |
3301 | unsigned_4 data; | |
3302 | /* enum + int calculation, argh! */ | |
3303 | id = VU_REG_MST + 16 * id; | |
3304 | read_vu_misc_reg(&(vu0_device.regs), id, & data); | |
3305 | GPR[rt] = EXTEND32(T2H_4(data)); | |
3306 | } | |
15232df4 | 3307 | } |
6ed00b06 FCE |
3308 | else if((i_25_21 == 0x06 && i_10_1 == 0x000) || /* CTC2 */ |
3309 | (i_25_21 == 0x05)) /* QMTC2 */ | |
15232df4 FCE |
3310 | { |
3311 | int rt = i_20_16; | |
3312 | int id = i_15_11; | |
15232df4 | 3313 | |
6ed00b06 | 3314 | /* interlock checking */ |
ebcfd86a FCE |
3315 | /* POLICY: never busy in macro mode */ |
3316 | if(vu0_busy() && interlock) | |
15232df4 | 3317 | { |
ebcfd86a | 3318 | while(! vu0_micro_interlock_released()) |
6ed00b06 | 3319 | vu0_issue(sd); |
15232df4 | 3320 | } |
ebcfd86a FCE |
3321 | |
3322 | /* perform VU register address */ | |
3323 | if(i_25_21 == 0x05) /* QMTC2 */ | |
15232df4 | 3324 | { |
ebcfd86a FCE |
3325 | unsigned_16 xyzw; |
3326 | memcpy(& xyzw, & GPR[rt], sizeof(xyzw)); | |
3327 | xyzw = H2T_16(xyzw); | |
3328 | /* one word at a time, argh! */ | |
3329 | write_vu_vec_reg(&(vu0_device.regs), id, 0, A4_16(& xyzw, 3)); | |
3330 | write_vu_vec_reg(&(vu0_device.regs), id, 1, A4_16(& xyzw, 2)); | |
3331 | write_vu_vec_reg(&(vu0_device.regs), id, 2, A4_16(& xyzw, 1)); | |
3332 | write_vu_vec_reg(&(vu0_device.regs), id, 3, A4_16(& xyzw, 0)); | |
15232df4 | 3333 | } |
6ed00b06 | 3334 | else /* CTC2 */ |
ebcfd86a FCE |
3335 | { |
3336 | unsigned_4 data = H2T_4(GPR[rt]); | |
3337 | /* enum + int calculation, argh! */ | |
3338 | id = VU_REG_MST + 16 * id; | |
3339 | write_vu_misc_reg(&(vu0_device.regs), id, & data); | |
3340 | } | |
3341 | } | |
3342 | else if(i_10_0 == 0x3bf) /* VWAITQ */ | |
3343 | { | |
3344 | while(vu0_q_busy()) | |
3345 | vu0_issue(sd); | |
3346 | } | |
3347 | else if(i_5_0 == 0x38) /* VCALLMS */ | |
3348 | { | |
3349 | unsigned_4 data = H2T_2(i_20_6); | |
3350 | ||
3351 | while(vu0_busy()) | |
3352 | vu0_issue(sd); | |
3353 | ||
3354 | /* write to reserved CIA register to get VU0 moving */ | |
11c47f31 FCE |
3355 | write_vu_special_reg(& vu0_device, VU_REG_CIA, & data); |
3356 | ||
3357 | ASSERT(vu0_busy()); | |
ebcfd86a FCE |
3358 | } |
3359 | else if(i_5_0 == 0x39) /* VCALLMSR */ | |
3360 | { | |
3361 | unsigned_4 data; | |
3362 | ||
3363 | while(vu0_busy()) | |
3364 | vu0_issue(sd); | |
6ed00b06 | 3365 | |
11c47f31 | 3366 | read_vu_special_reg(& vu0_device, VU_REG_CMSAR0, & data); |
ebcfd86a | 3367 | /* write to reserved CIA register to get VU0 moving */ |
11c47f31 FCE |
3368 | write_vu_special_reg(& vu0_device, VU_REG_CIA, & data); |
3369 | ||
3370 | ASSERT(vu0_busy()); | |
6ed00b06 | 3371 | } |
ebcfd86a FCE |
3372 | /* handle all remaining UPPER VU instructions in one block */ |
3373 | else if((i_5_0 < 0x30) || /* VADDx .. VMINI */ | |
3374 | (i_5_0 >= 0x3c && i_10_6 < 0x0c)) /* VADDAx .. VNOP */ | |
6ed00b06 FCE |
3375 | { |
3376 | unsigned_4 vu_upper, vu_lower; | |
3377 | vu_upper = | |
174ff224 | 3378 | 0x00000000 | /* bits 31 .. 25 */ |
ebcfd86a | 3379 | (instruction & 0x01ffffff); /* bits 24 .. 0 */ |
6ed00b06 FCE |
3380 | vu_lower = 0x8000033c; /* NOP */ |
3381 | ||
ebcfd86a FCE |
3382 | /* POLICY: never busy in macro mode */ |
3383 | while(vu0_busy()) | |
6ed00b06 FCE |
3384 | vu0_issue(sd); |
3385 | ||
3386 | vu0_macro_issue(vu_upper, vu_lower); | |
ebcfd86a FCE |
3387 | |
3388 | /* POLICY: wait for completion of macro-instruction */ | |
3389 | while(vu0_busy()) | |
3390 | vu0_issue(sd); | |
6ed00b06 | 3391 | } |
ebcfd86a FCE |
3392 | /* handle all remaining LOWER VU instructions in one block */ |
3393 | else if((i_5_0 >= 0x30 && i_5_0 <= 0x35) || /* VIADD .. VIOR */ | |
3394 | (i_5_0 >= 0x3c && i_10_6 >= 0x0c)) /* VMOVE .. VRXOR */ | |
3395 | { /* N.B.: VWAITQ already covered by prior case */ | |
6ed00b06 | 3396 | unsigned_4 vu_upper, vu_lower; |
174ff224 | 3397 | vu_upper = 0x000002ff; /* NOP/NOP */ |
6ed00b06 | 3398 | vu_lower = |
96a4eb30 | 3399 | 0x80000000 | /* bits 31 .. 25 */ |
ebcfd86a | 3400 | (instruction & 0x01ffffff); /* bits 24 .. 0 */ |
6ed00b06 | 3401 | |
ebcfd86a FCE |
3402 | /* POLICY: never busy in macro mode */ |
3403 | while(vu0_busy()) | |
6ed00b06 FCE |
3404 | vu0_issue(sd); |
3405 | ||
3406 | vu0_macro_issue(vu_upper, vu_lower); | |
ebcfd86a FCE |
3407 | |
3408 | /* POLICY: wait for completion of macro-instruction */ | |
3409 | while(vu0_busy()) | |
3410 | vu0_issue(sd); | |
15232df4 | 3411 | } |
ebcfd86a | 3412 | /* ... no other COP2 instructions ... */ |
15232df4 FCE |
3413 | else |
3414 | { | |
6ed00b06 | 3415 | SignalException(ReservedInstruction, instruction); |
15232df4 FCE |
3416 | /* NOTREACHED */ |
3417 | } | |
3418 | ||
3419 | /* cleanup for semantic.c-like actions above */ | |
3420 | PC = NIA; | |
3421 | ||
7dd4a466 | 3422 | #endif /* TARGET_SKY */ |
15232df4 FCE |
3423 | /* end-sanitize-sky */ |
3424 | ||
3425 | if(! handle) | |
3426 | { | |
ebcfd86a | 3427 | sim_io_eprintf(sd, "COP2 instruction 0x%08X at PC = 0x%s : No handler present\n", |
15232df4 FCE |
3428 | instruction,pr_addr(cia)); |
3429 | } | |
3430 | } | |
3431 | break; | |
3432 | ||
8bae0a0c JSC |
3433 | case 1: /* should not occur (FPU co-processor) */ |
3434 | case 3: /* should not occur (FPU co-processor) */ | |
3435 | SignalException(ReservedInstruction,instruction); | |
3436 | break; | |
56e7c849 AC |
3437 | } |
3438 | ||
8bae0a0c JSC |
3439 | return; |
3440 | } | |
3441 | ||
15232df4 | 3442 | |
8bae0a0c JSC |
3443 | /*-- instruction simulation -------------------------------------------------*/ |
3444 | ||
16bd5d6e AC |
3445 | /* When the IGEN simulator is being built, the function below is be |
3446 | replaced by a generated version. However, WITH_IGEN == 2 indicates | |
3447 | that the fubction below should be compiled but under a different | |
3448 | name (to allow backward compatibility) */ | |
3449 | ||
3450 | #if (WITH_IGEN != 1) | |
3451 | #if (WITH_IGEN > 1) | |
dad6f1f3 AC |
3452 | void old_engine_run PARAMS ((SIM_DESC sd, int next_cpu_nr, int siggnal)); |
3453 | void | |
9ec6741b | 3454 | old_engine_run (sd, next_cpu_nr, nr_cpus, siggnal) |
dad6f1f3 | 3455 | #else |
2e61a3ad | 3456 | void |
9ec6741b | 3457 | sim_engine_run (sd, next_cpu_nr, nr_cpus, siggnal) |
dad6f1f3 | 3458 | #endif |
2e61a3ad AC |
3459 | SIM_DESC sd; |
3460 | int next_cpu_nr; /* ignore */ | |
9ec6741b | 3461 | int nr_cpus; /* ignore */ |
2e61a3ad | 3462 | int siggnal; /* ignore */ |
8bae0a0c | 3463 | { |
01737f42 | 3464 | sim_cpu *cpu = STATE_CPU (sd, 0); /* hardwire to cpu 0 */ |
50a2a691 | 3465 | #if !defined(FASTSIM) |
8bae0a0c | 3466 | unsigned int pipeline_count = 1; |
50a2a691 | 3467 | #endif |
8bae0a0c JSC |
3468 | |
3469 | #ifdef DEBUG | |
50a2a691 | 3470 | if (STATE_MEMORY (sd) == NULL) { |
8bae0a0c JSC |
3471 | printf("DBG: simulate() entered with no memory\n"); |
3472 | exit(1); | |
3473 | } | |
3474 | #endif /* DEBUG */ | |
3475 | ||
3476 | #if 0 /* Disabled to check that everything works OK */ | |
3477 | /* The VR4300 seems to sign-extend the PC on its first | |
3478 | access. However, this may just be because it is currently | |
3479 | configured in 32bit mode. However... */ | |
3480 | PC = SIGNEXTEND(PC,32); | |
3481 | #endif | |
3482 | ||
3483 | /* main controlling loop */ | |
2e61a3ad | 3484 | while (1) { |
7ce8b917 AC |
3485 | /* vaddr is slowly being replaced with cia - current instruction |
3486 | address */ | |
3487 | address_word cia = (uword64)PC; | |
3488 | address_word vaddr = cia; | |
dad6f1f3 | 3489 | address_word paddr; |
8bae0a0c | 3490 | int cca; |
53b9417e | 3491 | unsigned int instruction; /* uword64? what's this used for? FIXME! */ |
8bae0a0c JSC |
3492 | |
3493 | #ifdef DEBUG | |
3494 | { | |
3495 | printf("DBG: state = 0x%08X :",state); | |
8bae0a0c JSC |
3496 | if (state & simHALTEX) printf(" simHALTEX"); |
3497 | if (state & simHALTIN) printf(" simHALTIN"); | |
53b9417e | 3498 | printf("\n"); |
8bae0a0c JSC |
3499 | } |
3500 | #endif /* DEBUG */ | |
3501 | ||
0c2c5f61 | 3502 | DSSTATE = (STATE & simDELAYSLOT); |
8bae0a0c JSC |
3503 | #ifdef DEBUG |
3504 | if (dsstate) | |
18c64df6 | 3505 | sim_io_printf(sd,"DBG: DSPC = 0x%s\n",pr_addr(DSPC)); |
8bae0a0c JSC |
3506 | #endif /* DEBUG */ |
3507 | ||
7ce8b917 AC |
3508 | /* Fetch the next instruction from the simulator memory: */ |
3509 | if (AddressTranslation(cia,isINSTRUCTION,isLOAD,&paddr,&cca,isTARGET,isREAL)) { | |
6429b296 JW |
3510 | if ((vaddr & 1) == 0) { |
3511 | /* Copy the action of the LW instruction */ | |
3512 | unsigned int reverse = (ReverseEndian ? (LOADDRMASK >> 2) : 0); | |
3513 | unsigned int bigend = (BigEndianCPU ? (LOADDRMASK >> 2) : 0); | |
3514 | uword64 value; | |
3515 | unsigned int byte; | |
3516 | paddr = ((paddr & ~LOADDRMASK) | ((paddr & LOADDRMASK) ^ (reverse << 2))); | |
53b9417e | 3517 | LoadMemory(&value,NULL,cca,AccessLength_WORD,paddr,vaddr,isINSTRUCTION,isREAL); |
6429b296 JW |
3518 | byte = ((vaddr & LOADDRMASK) ^ (bigend << 2)); |
3519 | instruction = ((value >> (8 * byte)) & 0xFFFFFFFF); | |
3520 | } else { | |
3521 | /* Copy the action of the LH instruction */ | |
3522 | unsigned int reverse = (ReverseEndian ? (LOADDRMASK >> 1) : 0); | |
3523 | unsigned int bigend = (BigEndianCPU ? (LOADDRMASK >> 1) : 0); | |
3524 | uword64 value; | |
3525 | unsigned int byte; | |
3526 | paddr = (((paddr & ~ (uword64) 1) & ~LOADDRMASK) | |
3527 | | (((paddr & ~ (uword64) 1) & LOADDRMASK) ^ (reverse << 1))); | |
53b9417e | 3528 | LoadMemory(&value,NULL,cca, AccessLength_HALFWORD, |
6429b296 JW |
3529 | paddr & ~ (uword64) 1, |
3530 | vaddr, isINSTRUCTION, isREAL); | |
3531 | byte = (((vaddr &~ (uword64) 1) & LOADDRMASK) ^ (bigend << 1)); | |
3532 | instruction = ((value >> (8 * byte)) & 0xFFFF); | |
3533 | } | |
8bae0a0c | 3534 | } else { |
53b9417e | 3535 | fprintf(stderr,"Cannot translate address for PC = 0x%s failed\n",pr_addr(PC)); |
8bae0a0c JSC |
3536 | exit(1); |
3537 | } | |
3538 | ||
3539 | #ifdef DEBUG | |
18c64df6 | 3540 | sim_io_printf(sd,"DBG: fetched 0x%08X from PC = 0x%s\n",instruction,pr_addr(PC)); |
8bae0a0c JSC |
3541 | #endif /* DEBUG */ |
3542 | ||
8bae0a0c JSC |
3543 | /* This is required by exception processing, to ensure that we can |
3544 | cope with exceptions in the delay slots of branches that may | |
3545 | already have changed the PC. */ | |
6429b296 JW |
3546 | if ((vaddr & 1) == 0) |
3547 | PC += 4; /* increment ready for the next fetch */ | |
3548 | else | |
3549 | PC += 2; | |
8bae0a0c JSC |
3550 | /* NOTE: If we perform a delay slot change to the PC, this |
3551 | increment is not requuired. However, it would make the | |
3552 | simulator more complicated to try and avoid this small hit. */ | |
3553 | ||
3554 | /* Currently this code provides a simple model. For more | |
3555 | complicated models we could perform exception status checks at | |
3556 | this point, and set the simSTOP state as required. This could | |
3557 | also include processing any hardware interrupts raised by any | |
3558 | I/O model attached to the simulator context. | |
3559 | ||
3560 | Support for "asynchronous" I/O events within the simulated world | |
3561 | could be providing by managing a counter, and calling a I/O | |
3562 | specific handler when a particular threshold is reached. On most | |
3563 | architectures a decrement and check for zero operation is | |
3564 | usually quicker than an increment and compare. However, the | |
3565 | process of managing a known value decrement to zero, is higher | |
3566 | than the cost of using an explicit value UINT_MAX into the | |
3567 | future. Which system is used will depend on how complicated the | |
3568 | I/O model is, and how much it is likely to affect the simulator | |
3569 | bandwidth. | |
3570 | ||
3571 | If events need to be scheduled further in the future than | |
3572 | UINT_MAX event ticks, then the I/O model should just provide its | |
3573 | own counter, triggered from the event system. */ | |
3574 | ||
3575 | /* MIPS pipeline ticks. To allow for future support where the | |
3576 | pipeline hit of individual instructions is known, this control | |
3577 | loop manages a "pipeline_count" variable. It is initialised to | |
3578 | 1 (one), and will only be changed by the simulator engine when | |
3579 | executing an instruction. If the engine does not have access to | |
3580 | pipeline cycle count information then all instructions will be | |
3581 | treated as using a single cycle. NOTE: A standard system is not | |
3582 | provided by the default simulator because different MIPS | |
3583 | architectures have different cycle counts for the same | |
50a2a691 AC |
3584 | instructions. |
3585 | ||
3586 | [NOTE: pipeline_count has been replaced the event queue] */ | |
8bae0a0c | 3587 | |
a09a30d2 AC |
3588 | /* shuffle the floating point status pipeline state */ |
3589 | ENGINE_ISSUE_PREFIX_HOOK(); | |
8bae0a0c JSC |
3590 | |
3591 | /* NOTE: For multi-context simulation environments the "instruction" | |
3592 | variable should be local to this routine. */ | |
3593 | ||
3594 | /* Shorthand accesses for engine. Note: If we wanted to use global | |
3595 | variables (and a single-threaded simulator engine), then we can | |
3596 | create the actual variables with these names. */ | |
3597 | ||
0c2c5f61 | 3598 | if (!(STATE & simSKIPNEXT)) { |
8bae0a0c | 3599 | /* Include the simulator engine */ |
284e759d | 3600 | #include "oengine.c" |
f24b7b69 | 3601 | #if ((GPRLEN == 64) && !PROCESSOR_64BIT) || ((GPRLEN == 32) && PROCESSOR_64BIT) |
8bae0a0c JSC |
3602 | #error "Mismatch between run-time simulator code and simulation engine" |
3603 | #endif | |
18c64df6 AC |
3604 | #if (WITH_TARGET_WORD_BITSIZE != GPRLEN) |
3605 | #error "Mismatch between configure WITH_TARGET_WORD_BITSIZE and gencode GPRLEN" | |
3606 | #endif | |
76ef4165 | 3607 | #if ((WITH_FLOATING_POINT == HARD_FLOATING_POINT) != defined (HASFPU)) |
18c64df6 AC |
3608 | #error "Mismatch between configure WITH_FLOATING_POINT and gencode HASFPU" |
3609 | #endif | |
8bae0a0c JSC |
3610 | |
3611 | #if defined(WARN_LOHI) | |
3612 | /* Decrement the HI/LO validity ticks */ | |
3613 | if (HIACCESS > 0) | |
3614 | HIACCESS--; | |
3615 | if (LOACCESS > 0) | |
3616 | LOACCESS--; | |
0425cfb3 | 3617 | /* start-sanitize-r5900 */ |
53b9417e DE |
3618 | if (HI1ACCESS > 0) |
3619 | HI1ACCESS--; | |
3620 | if (LO1ACCESS > 0) | |
3621 | LO1ACCESS--; | |
0425cfb3 | 3622 | /* end-sanitize-r5900 */ |
8bae0a0c JSC |
3623 | #endif /* WARN_LOHI */ |
3624 | ||
8bae0a0c JSC |
3625 | /* For certain MIPS architectures, GPR[0] is hardwired to zero. We |
3626 | should check for it being changed. It is better doing it here, | |
3627 | than within the simulator, since it will help keep the simulator | |
3628 | small. */ | |
3629 | if (ZERO != 0) { | |
05d1322f | 3630 | #if defined(WARN_ZERO) |
95469ceb | 3631 | sim_io_eprintf(sd,"The ZERO register has been updated with 0x%s (PC = 0x%s) (reset back to zero)\n",pr_addr(ZERO),pr_addr(cia)); |
05d1322f | 3632 | #endif /* WARN_ZERO */ |
8bae0a0c JSC |
3633 | ZERO = 0; /* reset back to zero before next instruction */ |
3634 | } | |
8bae0a0c | 3635 | } else /* simSKIPNEXT check */ |
0c2c5f61 | 3636 | STATE &= ~simSKIPNEXT; |
8bae0a0c JSC |
3637 | |
3638 | /* If the delay slot was active before the instruction is | |
3639 | executed, then update the PC to its new value: */ | |
0c2c5f61 | 3640 | if (DSSTATE) { |
8bae0a0c | 3641 | #ifdef DEBUG |
53b9417e | 3642 | printf("DBG: dsstate set before instruction execution - updating PC to 0x%s\n",pr_addr(DSPC)); |
8bae0a0c JSC |
3643 | #endif /* DEBUG */ |
3644 | PC = DSPC; | |
6eedf3f4 | 3645 | CANCELDELAYSLOT(); |
8bae0a0c JSC |
3646 | } |
3647 | ||
2acd126a AC |
3648 | if (MIPSISA < 4) |
3649 | PENDING_TICK(); | |
8bae0a0c JSC |
3650 | |
3651 | #if !defined(FASTSIM) | |
50a2a691 AC |
3652 | if (sim_events_tickn (sd, pipeline_count)) |
3653 | { | |
3654 | /* cpu->cia = cia; */ | |
3655 | sim_events_process (sd); | |
3656 | } | |
3657 | #else | |
2e61a3ad AC |
3658 | if (sim_events_tick (sd)) |
3659 | { | |
3660 | /* cpu->cia = cia; */ | |
3661 | sim_events_process (sd); | |
3662 | } | |
50a2a691 | 3663 | #endif /* FASTSIM */ |
8bae0a0c | 3664 | } |
8bae0a0c | 3665 | } |
16bd5d6e AC |
3666 | #endif |
3667 | ||
8bae0a0c | 3668 | |
53b9417e DE |
3669 | /* This code copied from gdb's utils.c. Would like to share this code, |
3670 | but don't know of a common place where both could get to it. */ | |
3671 | ||
3672 | /* Temporary storage using circular buffer */ | |
3673 | #define NUMCELLS 16 | |
3674 | #define CELLSIZE 32 | |
3675 | static char* | |
3676 | get_cell() | |
3677 | { | |
3678 | static char buf[NUMCELLS][CELLSIZE]; | |
3679 | static int cell=0; | |
3680 | if (++cell>=NUMCELLS) cell=0; | |
3681 | return buf[cell]; | |
3682 | } | |
3683 | ||
3684 | /* Print routines to handle variable size regs, etc */ | |
3685 | ||
3686 | /* Eliminate warning from compiler on 32-bit systems */ | |
3687 | static int thirty_two = 32; | |
3688 | ||
3689 | char* | |
3690 | pr_addr(addr) | |
3691 | SIM_ADDR addr; | |
3692 | { | |
3693 | char *paddr_str=get_cell(); | |
3694 | switch (sizeof(addr)) | |
3695 | { | |
3696 | case 8: | |
50a2a691 | 3697 | sprintf(paddr_str,"%08lx%08lx", |
53b9417e DE |
3698 | (unsigned long)(addr>>thirty_two),(unsigned long)(addr&0xffffffff)); |
3699 | break; | |
3700 | case 4: | |
50a2a691 | 3701 | sprintf(paddr_str,"%08lx",(unsigned long)addr); |
53b9417e DE |
3702 | break; |
3703 | case 2: | |
3704 | sprintf(paddr_str,"%04x",(unsigned short)(addr&0xffff)); | |
3705 | break; | |
3706 | default: | |
3707 | sprintf(paddr_str,"%x",addr); | |
3708 | } | |
3709 | return paddr_str; | |
3710 | } | |
3711 | ||
87e43259 AC |
3712 | char* |
3713 | pr_uword64(addr) | |
3714 | uword64 addr; | |
3715 | { | |
3716 | char *paddr_str=get_cell(); | |
50a2a691 | 3717 | sprintf(paddr_str,"%08lx%08lx", |
87e43259 AC |
3718 | (unsigned long)(addr>>thirty_two),(unsigned long)(addr&0xffffffff)); |
3719 | return paddr_str; | |
3720 | } | |
3721 | ||
3722 | ||
2acd126a | 3723 | |
8bae0a0c JSC |
3724 | /*---------------------------------------------------------------------------*/ |
3725 | /*> EOF interp.c <*/ |