Commit | Line | Data |
---|---|---|
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 | $Revision$ | |
17 | $Author$ | |
e3d12c65 | 18 | $Date$ |
8bae0a0c JSC |
19 | |
20 | NOTEs: | |
21 | ||
8bae0a0c JSC |
22 | The IDT monitor (found on the VR4300 board), seems to lie about |
23 | register contents. It seems to treat the registers as sign-extended | |
24 | 32-bit values. This cause *REAL* problems when single-stepping 64-bit | |
25 | code on the hardware. | |
26 | ||
27 | */ | |
28 | ||
e2f8ffb7 AC |
29 | /* The TRACE manifests enable the provision of extra features. If they |
30 | are not defined then a simpler (quicker) simulator is constructed | |
31 | without the required run-time checks, etc. */ | |
8bae0a0c JSC |
32 | #if 1 /* 0 to allow user build selection, 1 to force inclusion */ |
33 | #define TRACE (1) | |
8bae0a0c JSC |
34 | #endif |
35 | ||
2e61a3ad AC |
36 | #include "bfd.h" |
37 | #include "sim-main.h" | |
38 | #include "sim-utils.h" | |
39 | #include "sim-options.h" | |
50a2a691 | 40 | #include "sim-assert.h" |
2e61a3ad | 41 | |
4fa134be ILT |
42 | #include "config.h" |
43 | ||
8bae0a0c JSC |
44 | #include <stdio.h> |
45 | #include <stdarg.h> | |
46 | #include <ansidecl.h> | |
8bae0a0c JSC |
47 | #include <ctype.h> |
48 | #include <limits.h> | |
49 | #include <math.h> | |
4fa134be ILT |
50 | #ifdef HAVE_STDLIB_H |
51 | #include <stdlib.h> | |
52 | #endif | |
53 | #ifdef HAVE_STRING_H | |
54 | #include <string.h> | |
55 | #else | |
56 | #ifdef HAVE_STRINGS_H | |
57 | #include <strings.h> | |
58 | #endif | |
59 | #endif | |
8bae0a0c JSC |
60 | |
61 | #include "getopt.h" | |
62 | #include "libiberty.h" | |
9d52bcb7 | 63 | #include "bfd.h" |
8bae0a0c | 64 | #include "callback.h" /* GDB simulator callback interface */ |
e3d12c65 | 65 | #include "remote-sim.h" /* GDB simulator interface */ |
8bae0a0c | 66 | |
f24b7b69 JSC |
67 | #include "sysdep.h" |
68 | ||
53b9417e DE |
69 | #ifndef PARAMS |
70 | #define PARAMS(x) | |
71 | #endif | |
72 | ||
73 | char* pr_addr PARAMS ((SIM_ADDR addr)); | |
87e43259 | 74 | char* pr_uword64 PARAMS ((uword64 addr)); |
53b9417e | 75 | |
f24b7b69 | 76 | |
8bae0a0c | 77 | /* Get the simulator engine description, without including the code: */ |
192ae475 AC |
78 | #if (WITH_IGEN) |
79 | #define LOADDRMASK (WITH_TARGET_WORD_BITSIZE == 64 ? 0x7 : 0x3) | |
80 | #else | |
8bae0a0c | 81 | #define SIM_MANIFESTS |
284e759d | 82 | #include "oengine.c" |
8bae0a0c | 83 | #undef SIM_MANIFESTS |
192ae475 | 84 | #endif |
8bae0a0c | 85 | |
01737f42 AC |
86 | /* Within interp.c we refer to the sim_state and sim_cpu directly. */ |
87 | #define SD sd | |
88 | #define CPU cpu | |
89 | ||
f7481d45 | 90 | |
8bae0a0c JSC |
91 | /* The following reserved instruction value is used when a simulator |
92 | trap is required. NOTE: Care must be taken, since this value may be | |
93 | used in later revisions of the MIPS ISA. */ | |
53b9417e DE |
94 | #define RSVD_INSTRUCTION (0x00000005) |
95 | #define RSVD_INSTRUCTION_MASK (0xFC00003F) | |
96 | ||
97 | #define RSVD_INSTRUCTION_ARG_SHIFT 6 | |
98 | #define RSVD_INSTRUCTION_ARG_MASK 0xFFFFF | |
99 | ||
8bae0a0c | 100 | |
6eedf3f4 MA |
101 | /* Bits in the Debug register */ |
102 | #define Debug_DBD 0x80000000 /* Debug Branch Delay */ | |
103 | #define Debug_DM 0x40000000 /* Debug Mode */ | |
104 | #define Debug_DBp 0x00000002 /* Debug Breakpoint indicator */ | |
105 | ||
106 | ||
107 | ||
8bae0a0c | 108 | |
8bae0a0c | 109 | |
e3d12c65 DE |
110 | /*---------------------------------------------------------------------------*/ |
111 | /*-- GDB simulator interface ------------------------------------------------*/ | |
112 | /*---------------------------------------------------------------------------*/ | |
113 | ||
0c2c5f61 | 114 | static void ColdReset PARAMS((SIM_DESC sd)); |
e3d12c65 DE |
115 | |
116 | /*---------------------------------------------------------------------------*/ | |
117 | ||
8bae0a0c | 118 | |
8bae0a0c | 119 | |
8bae0a0c | 120 | #define DELAYSLOT() {\ |
0c2c5f61 | 121 | if (STATE & simDELAYSLOT)\ |
18c64df6 | 122 | sim_io_eprintf(sd,"Delay slot already activated (branch in delay slot?)\n");\ |
0c2c5f61 | 123 | STATE |= simDELAYSLOT;\ |
8bae0a0c JSC |
124 | } |
125 | ||
aaff8437 ILT |
126 | #define JALDELAYSLOT() {\ |
127 | DELAYSLOT ();\ | |
0c2c5f61 | 128 | STATE |= simJALDELAYSLOT;\ |
aaff8437 ILT |
129 | } |
130 | ||
8bae0a0c | 131 | #define NULLIFY() {\ |
0c2c5f61 AC |
132 | STATE &= ~simDELAYSLOT;\ |
133 | STATE |= simSKIPNEXT;\ | |
8bae0a0c JSC |
134 | } |
135 | ||
6eedf3f4 | 136 | #define CANCELDELAYSLOT() {\ |
0c2c5f61 AC |
137 | DSSTATE = 0;\ |
138 | STATE &= ~(simDELAYSLOT | simJALDELAYSLOT);\ | |
6eedf3f4 MA |
139 | } |
140 | ||
0c2c5f61 AC |
141 | #define INDELAYSLOT() ((STATE & simDELAYSLOT) != 0) |
142 | #define INJALDELAYSLOT() ((STATE & simJALDELAYSLOT) != 0) | |
aaff8437 | 143 | |
a9f7253f JSC |
144 | #define K0BASE (0x80000000) |
145 | #define K0SIZE (0x20000000) | |
146 | #define K1BASE (0xA0000000) | |
147 | #define K1SIZE (0x20000000) | |
525d929e AC |
148 | #define MONITOR_BASE (0xBFC00000) |
149 | #define MONITOR_SIZE (1 << 11) | |
150 | #define MEM_SIZE (2 << 20) | |
a9f7253f | 151 | |
8bae0a0c | 152 | #if defined(TRACE) |
4fa134be | 153 | static char *tracefile = "trace.din"; /* default filename for trace log */ |
030843d7 | 154 | FILE *tracefh = NULL; |
18c64df6 | 155 | static void open_trace PARAMS((SIM_DESC sd)); |
8bae0a0c JSC |
156 | #endif /* TRACE */ |
157 | ||
22de994d AC |
158 | #define OPTION_DINERO_TRACE 200 |
159 | #define OPTION_DINERO_FILE 201 | |
160 | ||
50a2a691 AC |
161 | static SIM_RC |
162 | mips_option_handler (sd, opt, arg) | |
163 | SIM_DESC sd; | |
164 | int opt; | |
165 | char *arg; | |
2e61a3ad | 166 | { |
01737f42 | 167 | int cpu_nr; |
50a2a691 AC |
168 | switch (opt) |
169 | { | |
22de994d | 170 | case OPTION_DINERO_TRACE: /* ??? */ |
50a2a691 AC |
171 | #if defined(TRACE) |
172 | /* Eventually the simTRACE flag could be treated as a toggle, to | |
173 | allow external control of the program points being traced | |
174 | (i.e. only from main onwards, excluding the run-time setup, | |
175 | etc.). */ | |
01737f42 | 176 | for (cpu_nr = 0; cpu_nr < sim_engine_nr_cpus (sd); cpu_nr++) |
50a2a691 | 177 | { |
01737f42 AC |
178 | sim_cpu *cpu = STATE_CPU (sd, cpu_nr); |
179 | if (arg == NULL) | |
180 | STATE |= simTRACE; | |
181 | else if (strcmp (arg, "yes") == 0) | |
182 | STATE |= simTRACE; | |
183 | else if (strcmp (arg, "no") == 0) | |
184 | STATE &= ~simTRACE; | |
185 | else if (strcmp (arg, "on") == 0) | |
186 | STATE |= simTRACE; | |
187 | else if (strcmp (arg, "off") == 0) | |
188 | STATE &= ~simTRACE; | |
189 | else | |
190 | { | |
191 | fprintf (stderr, "Unreconized dinero-trace option `%s'\n", arg); | |
192 | return SIM_RC_FAIL; | |
193 | } | |
50a2a691 AC |
194 | } |
195 | return SIM_RC_OK; | |
196 | #else /* !TRACE */ | |
197 | fprintf(stderr,"\ | |
22de994d | 198 | Simulator constructed without dinero tracing support (for performance).\n\ |
50a2a691 AC |
199 | Re-compile simulator with \"-DTRACE\" to enable this option.\n"); |
200 | return SIM_RC_FAIL; | |
201 | #endif /* !TRACE */ | |
202 | ||
22de994d | 203 | case OPTION_DINERO_FILE: |
50a2a691 AC |
204 | #if defined(TRACE) |
205 | if (optarg != NULL) { | |
206 | char *tmp; | |
207 | tmp = (char *)malloc(strlen(optarg) + 1); | |
208 | if (tmp == NULL) | |
209 | { | |
18c64df6 | 210 | sim_io_printf(sd,"Failed to allocate buffer for tracefile name \"%s\"\n",optarg); |
50a2a691 AC |
211 | return SIM_RC_FAIL; |
212 | } | |
213 | else { | |
214 | strcpy(tmp,optarg); | |
215 | tracefile = tmp; | |
18c64df6 | 216 | sim_io_printf(sd,"Placing trace information into file \"%s\"\n",tracefile); |
50a2a691 AC |
217 | } |
218 | } | |
219 | #endif /* TRACE */ | |
220 | return SIM_RC_OK; | |
221 | ||
50a2a691 AC |
222 | } |
223 | ||
224 | return SIM_RC_OK; | |
2e61a3ad | 225 | } |
50a2a691 AC |
226 | |
227 | static const OPTION mips_options[] = | |
2e61a3ad | 228 | { |
22de994d AC |
229 | { {"dinero-trace", optional_argument, NULL, OPTION_DINERO_TRACE}, |
230 | '\0', "on|off", "Enable dinero tracing", | |
50a2a691 | 231 | mips_option_handler }, |
22de994d AC |
232 | { {"dinero-file", required_argument, NULL, OPTION_DINERO_FILE}, |
233 | '\0', "FILE", "Write dinero trace to FILE", | |
50a2a691 | 234 | mips_option_handler }, |
50a2a691 AC |
235 | { {NULL, no_argument, NULL, 0}, '\0', NULL, NULL, NULL } |
236 | }; | |
237 | ||
238 | ||
56e7c849 AC |
239 | int interrupt_pending; |
240 | ||
50a2a691 AC |
241 | static void |
242 | interrupt_event (SIM_DESC sd, void *data) | |
2e61a3ad | 243 | { |
01737f42 | 244 | sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */ |
56e7c849 AC |
245 | if (SR & status_IE) |
246 | { | |
247 | interrupt_pending = 0; | |
18c64df6 | 248 | SignalExceptionInterrupt (); |
56e7c849 AC |
249 | } |
250 | else if (!interrupt_pending) | |
251 | sim_events_schedule (sd, 1, interrupt_event, data); | |
2e61a3ad | 252 | } |
f7481d45 | 253 | |
f7481d45 | 254 | |
50a2a691 | 255 | |
8bae0a0c JSC |
256 | /*---------------------------------------------------------------------------*/ |
257 | /*-- GDB simulator interface ------------------------------------------------*/ | |
258 | /*---------------------------------------------------------------------------*/ | |
259 | ||
53b9417e | 260 | SIM_DESC |
247fccde | 261 | sim_open (kind, cb, abfd, argv) |
87e43259 | 262 | SIM_OPEN_KIND kind; |
50a2a691 | 263 | host_callback *cb; |
247fccde | 264 | struct _bfd *abfd; |
53b9417e | 265 | char **argv; |
8bae0a0c | 266 | { |
18c64df6 | 267 | SIM_DESC sd = sim_state_alloc (kind, cb); |
01737f42 | 268 | sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */ |
2e61a3ad | 269 | |
525d929e AC |
270 | SIM_ASSERT (STATE_MAGIC (sd) == SIM_MAGIC_NUMBER); |
271 | ||
50a2a691 AC |
272 | /* FIXME: watchpoints code shouldn't need this */ |
273 | STATE_WATCHPOINTS (sd)->pc = &(PC); | |
274 | STATE_WATCHPOINTS (sd)->sizeof_pc = sizeof (PC); | |
275 | STATE_WATCHPOINTS (sd)->interrupt_handler = interrupt_event; | |
276 | ||
0c2c5f61 | 277 | STATE = 0; |
50a2a691 | 278 | |
2e61a3ad AC |
279 | if (sim_pre_argv_init (sd, argv[0]) != SIM_RC_OK) |
280 | return 0; | |
50a2a691 | 281 | sim_add_option_table (sd, mips_options); |
2e61a3ad | 282 | |
63be8feb AC |
283 | /* Allocate core managed memory */ |
284 | ||
285 | /* the monitor */ | |
286 | sim_do_commandf (sd, "memory region 0x%lx,0x%lx", MONITOR_BASE, MONITOR_SIZE); | |
287 | /* For compatibility with the old code - under this (at level one) | |
288 | are the kernel spaces K0 & K1. Both of these map to a single | |
289 | smaller sub region */ | |
290 | sim_do_commandf (sd, "memory alias 0x%lx@1,0x%lx%%0x%lx,0x%0x", | |
291 | K1BASE, K0SIZE, | |
292 | MEM_SIZE, /* actual size */ | |
293 | K0BASE); | |
294 | ||
2e61a3ad AC |
295 | /* getopt will print the error message so we just have to exit if this fails. |
296 | FIXME: Hmmm... in the case of gdb we need getopt to call | |
297 | print_filtered. */ | |
298 | if (sim_parse_args (sd, argv) != SIM_RC_OK) | |
299 | { | |
300 | /* Uninstall the modules to avoid memory leaks, | |
301 | file descriptor leaks, etc. */ | |
302 | sim_module_uninstall (sd); | |
303 | return 0; | |
304 | } | |
2e61a3ad | 305 | |
fafce69a AC |
306 | /* check for/establish the a reference program image */ |
307 | if (sim_analyze_program (sd, | |
308 | (STATE_PROG_ARGV (sd) != NULL | |
309 | ? *STATE_PROG_ARGV (sd) | |
310 | : NULL), | |
311 | abfd) != SIM_RC_OK) | |
312 | { | |
313 | sim_module_uninstall (sd); | |
314 | return 0; | |
315 | } | |
316 | ||
247fccde AC |
317 | /* Configure/verify the target byte order and other runtime |
318 | configuration options */ | |
fafce69a | 319 | if (sim_config (sd) != SIM_RC_OK) |
247fccde AC |
320 | { |
321 | sim_module_uninstall (sd); | |
322 | return 0; | |
323 | } | |
324 | ||
2e61a3ad AC |
325 | if (sim_post_argv_init (sd) != SIM_RC_OK) |
326 | { | |
327 | /* Uninstall the modules to avoid memory leaks, | |
328 | file descriptor leaks, etc. */ | |
329 | sim_module_uninstall (sd); | |
330 | return 0; | |
331 | } | |
332 | ||
50a2a691 AC |
333 | /* verify assumptions the simulator made about the host type system. |
334 | This macro does not return if there is a problem */ | |
7ce8b917 AC |
335 | SIM_ASSERT (sizeof(int) == (4 * sizeof(char))); |
336 | SIM_ASSERT (sizeof(word64) == (8 * sizeof(char))); | |
8bae0a0c | 337 | |
8bae0a0c JSC |
338 | /* This is NASTY, in that we are assuming the size of specific |
339 | registers: */ | |
340 | { | |
341 | int rn; | |
342 | for (rn = 0; (rn < (LAST_EMBED_REGNUM + 1)); rn++) { | |
343 | if (rn < 32) | |
192ae475 | 344 | cpu->register_widths[rn] = WITH_TARGET_WORD_BITSIZE; |
8bae0a0c | 345 | else if ((rn >= FGRIDX) && (rn < (FGRIDX + 32))) |
192ae475 | 346 | cpu->register_widths[rn] = WITH_TARGET_WORD_BITSIZE; |
8bae0a0c | 347 | else if ((rn >= 33) && (rn <= 37)) |
192ae475 | 348 | cpu->register_widths[rn] = WITH_TARGET_WORD_BITSIZE; |
8bae0a0c | 349 | else if ((rn == SRIDX) || (rn == FCR0IDX) || (rn == FCR31IDX) || ((rn >= 72) && (rn <= 89))) |
0c2c5f61 | 350 | cpu->register_widths[rn] = 32; |
8bae0a0c | 351 | else |
0c2c5f61 | 352 | cpu->register_widths[rn] = 0; |
8bae0a0c | 353 | } |
18c64df6 AC |
354 | /* start-sanitize-r5900 */ |
355 | ||
356 | /* set the 5900 "upper" registers to 64 bits */ | |
357 | for( rn = LAST_EMBED_REGNUM+1; rn < NUM_REGS; rn++) | |
0c2c5f61 | 358 | cpu->register_widths[rn] = 64; |
18c64df6 | 359 | /* end-sanitize-r5900 */ |
8bae0a0c JSC |
360 | } |
361 | ||
8bae0a0c | 362 | #if defined(TRACE) |
0c2c5f61 | 363 | if (STATE & simTRACE) |
18c64df6 | 364 | open_trace(sd); |
8bae0a0c JSC |
365 | #endif /* TRACE */ |
366 | ||
fafce69a AC |
367 | /* Write the monitor trap address handlers into the monitor (eeprom) |
368 | address space. This can only be done once the target endianness | |
369 | has been determined. */ | |
370 | { | |
371 | unsigned loop; | |
372 | /* Entry into the IDT monitor is via fixed address vectors, and | |
373 | not using machine instructions. To avoid clashing with use of | |
374 | the MIPS TRAP system, we place our own (simulator specific) | |
375 | "undefined" instructions into the relevant vector slots. */ | |
525d929e AC |
376 | for (loop = 0; (loop < MONITOR_SIZE); loop += 4) |
377 | { | |
378 | address_word vaddr = (MONITOR_BASE + loop); | |
379 | unsigned32 insn = (RSVD_INSTRUCTION | (((loop >> 2) & RSVD_INSTRUCTION_ARG_MASK) << RSVD_INSTRUCTION_ARG_SHIFT)); | |
380 | H2T (insn); | |
381 | sim_write (sd, vaddr, (char *)&insn, sizeof (insn)); | |
382 | } | |
fafce69a AC |
383 | /* The PMON monitor uses the same address space, but rather than |
384 | branching into it the address of a routine is loaded. We can | |
385 | cheat for the moment, and direct the PMON routine to IDT style | |
386 | instructions within the monitor space. This relies on the IDT | |
387 | monitor not using the locations from 0xBFC00500 onwards as its | |
388 | entry points.*/ | |
389 | for (loop = 0; (loop < 24); loop++) | |
390 | { | |
525d929e AC |
391 | address_word vaddr = (MONITOR_BASE + 0x500 + (loop * 4)); |
392 | unsigned32 value = ((0x500 - 8) / 8); /* default UNDEFINED reason code */ | |
fafce69a AC |
393 | switch (loop) |
394 | { | |
395 | case 0: /* read */ | |
396 | value = 7; | |
397 | break; | |
fafce69a AC |
398 | case 1: /* write */ |
399 | value = 8; | |
400 | break; | |
fafce69a AC |
401 | case 2: /* open */ |
402 | value = 6; | |
403 | break; | |
fafce69a AC |
404 | case 3: /* close */ |
405 | value = 10; | |
406 | break; | |
fafce69a AC |
407 | case 5: /* printf */ |
408 | value = ((0x500 - 16) / 8); /* not an IDT reason code */ | |
409 | break; | |
fafce69a AC |
410 | case 8: /* cliexit */ |
411 | value = 17; | |
412 | break; | |
fafce69a AC |
413 | case 11: /* flush_cache */ |
414 | value = 28; | |
415 | break; | |
416 | } | |
525d929e AC |
417 | /* FIXME - should monitor_base be SIM_ADDR?? */ |
418 | value = ((unsigned int)MONITOR_BASE + (value * 8)); | |
419 | H2T (value); | |
420 | sim_write (sd, vaddr, (char *)&value, sizeof (value)); | |
fafce69a AC |
421 | |
422 | /* The LSI MiniRISC PMON has its vectors at 0x200, not 0x500. */ | |
423 | vaddr -= 0x300; | |
525d929e | 424 | sim_write (sd, vaddr, (char *)&value, sizeof (value)); |
fafce69a AC |
425 | } |
426 | } | |
427 | ||
2e61a3ad | 428 | return sd; |
8bae0a0c JSC |
429 | } |
430 | ||
6429b296 JW |
431 | #if defined(TRACE) |
432 | static void | |
18c64df6 AC |
433 | open_trace(sd) |
434 | SIM_DESC sd; | |
6429b296 JW |
435 | { |
436 | tracefh = fopen(tracefile,"wb+"); | |
437 | if (tracefh == NULL) | |
438 | { | |
18c64df6 | 439 | sim_io_eprintf(sd,"Failed to create file \"%s\", writing trace information to stderr.\n",tracefile); |
6429b296 JW |
440 | tracefh = stderr; |
441 | } | |
442 | } | |
443 | #endif /* TRACE */ | |
444 | ||
8bae0a0c | 445 | void |
53b9417e DE |
446 | sim_close (sd, quitting) |
447 | SIM_DESC sd; | |
8bae0a0c JSC |
448 | int quitting; |
449 | { | |
450 | #ifdef DEBUG | |
451 | printf("DBG: sim_close: entered (quitting = %d)\n",quitting); | |
452 | #endif | |
453 | ||
8bae0a0c JSC |
454 | /* "quitting" is non-zero if we cannot hang on errors */ |
455 | ||
456 | /* Ensure that any resources allocated through the callback | |
457 | mechanism are released: */ | |
18c64df6 | 458 | sim_io_shutdown (sd); |
8bae0a0c | 459 | |
8bae0a0c | 460 | #if defined(TRACE) |
e3d12c65 | 461 | if (tracefh != NULL && tracefh != stderr) |
8bae0a0c | 462 | fclose(tracefh); |
e3d12c65 | 463 | tracefh = NULL; |
8bae0a0c JSC |
464 | #endif /* TRACE */ |
465 | ||
01737f42 AC |
466 | /* FIXME - free SD */ |
467 | ||
8bae0a0c JSC |
468 | return; |
469 | } | |
470 | ||
8bae0a0c JSC |
471 | |
472 | int | |
53b9417e DE |
473 | sim_write (sd,addr,buffer,size) |
474 | SIM_DESC sd; | |
8bae0a0c JSC |
475 | SIM_ADDR addr; |
476 | unsigned char *buffer; | |
477 | int size; | |
478 | { | |
525d929e | 479 | int index; |
01737f42 | 480 | sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */ |
8bae0a0c JSC |
481 | |
482 | /* Return the number of bytes written, or zero if error. */ | |
483 | #ifdef DEBUG | |
18c64df6 | 484 | sim_io_printf(sd,"sim_write(0x%s,buffer,%d);\n",pr_addr(addr),size); |
8bae0a0c JSC |
485 | #endif |
486 | ||
525d929e AC |
487 | /* We use raw read and write routines, since we do not want to count |
488 | the GDB memory accesses in our statistics gathering. */ | |
489 | ||
490 | for (index = 0; index < size; index++) | |
491 | { | |
492 | address_word vaddr = (address_word)addr + index; | |
493 | address_word paddr; | |
494 | int cca; | |
01737f42 | 495 | if (!address_translation (SD, CPU, NULL_CIA, vaddr, isDATA, isSTORE, &paddr, &cca, isRAW)) |
525d929e | 496 | break; |
01737f42 | 497 | if (sim_core_write_buffer (SD, CPU, sim_core_read_map, buffer + index, paddr, 1) != 1) |
63be8feb | 498 | break; |
8bae0a0c | 499 | } |
8bae0a0c | 500 | |
525d929e | 501 | return(index); |
8bae0a0c JSC |
502 | } |
503 | ||
504 | int | |
53b9417e DE |
505 | sim_read (sd,addr,buffer,size) |
506 | SIM_DESC sd; | |
8bae0a0c JSC |
507 | SIM_ADDR addr; |
508 | unsigned char *buffer; | |
509 | int size; | |
510 | { | |
511 | int index; | |
01737f42 | 512 | sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */ |
8bae0a0c JSC |
513 | |
514 | /* Return the number of bytes read, or zero if error. */ | |
515 | #ifdef DEBUG | |
18c64df6 | 516 | sim_io_printf(sd,"sim_read(0x%s,buffer,%d);\n",pr_addr(addr),size); |
8bae0a0c JSC |
517 | #endif /* DEBUG */ |
518 | ||
525d929e AC |
519 | for (index = 0; (index < size); index++) |
520 | { | |
521 | address_word vaddr = (address_word)addr + index; | |
522 | address_word paddr; | |
525d929e | 523 | int cca; |
01737f42 | 524 | if (!address_translation (SD, CPU, NULL_CIA, vaddr, isDATA, isLOAD, &paddr, &cca, isRAW)) |
525d929e | 525 | break; |
01737f42 | 526 | if (sim_core_read_buffer (SD, CPU, sim_core_read_map, buffer + index, paddr, 1) != 1) |
63be8feb | 527 | break; |
525d929e | 528 | } |
8bae0a0c JSC |
529 | |
530 | return(index); | |
531 | } | |
532 | ||
533 | void | |
53b9417e DE |
534 | sim_store_register (sd,rn,memory) |
535 | SIM_DESC sd; | |
8bae0a0c JSC |
536 | int rn; |
537 | unsigned char *memory; | |
538 | { | |
01737f42 | 539 | sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */ |
50a2a691 AC |
540 | /* NOTE: gdb (the client) stores registers in target byte order |
541 | while the simulator uses host byte order */ | |
8bae0a0c | 542 | #ifdef DEBUG |
18c64df6 | 543 | sim_io_printf(sd,"sim_store_register(%d,*memory=0x%s);\n",rn,pr_addr(*((SIM_ADDR *)memory))); |
8bae0a0c JSC |
544 | #endif /* DEBUG */ |
545 | ||
546 | /* Unfortunately this suffers from the same problem as the register | |
547 | numbering one. We need to know what the width of each logical | |
548 | register number is for the architecture being simulated. */ | |
50a2a691 | 549 | |
0c2c5f61 | 550 | if (cpu->register_widths[rn] == 0) |
18c64df6 AC |
551 | sim_io_eprintf(sd,"Invalid register width for %d (register store ignored)\n",rn); |
552 | /* start-sanitize-r5900 */ | |
553 | else if (rn == REGISTER_SA) | |
554 | SA = T2H_8(*(uword64*)memory); | |
555 | else if (rn > LAST_EMBED_REGNUM) | |
0c2c5f61 | 556 | cpu->registers1[rn - LAST_EMBED_REGNUM - 1] = T2H_8(*(uword64*)memory); |
18c64df6 | 557 | /* end-sanitize-r5900 */ |
0c2c5f61 AC |
558 | else if (cpu->register_widths[rn] == 32) |
559 | cpu->registers[rn] = T2H_4 (*(unsigned int*)memory); | |
50a2a691 | 560 | else |
0c2c5f61 | 561 | cpu->registers[rn] = T2H_8 (*(uword64*)memory); |
8bae0a0c JSC |
562 | |
563 | return; | |
564 | } | |
565 | ||
566 | void | |
53b9417e DE |
567 | sim_fetch_register (sd,rn,memory) |
568 | SIM_DESC sd; | |
8bae0a0c JSC |
569 | int rn; |
570 | unsigned char *memory; | |
571 | { | |
01737f42 | 572 | sim_cpu *cpu = STATE_CPU (sd, 0); /* FIXME */ |
50a2a691 AC |
573 | /* NOTE: gdb (the client) stores registers in target byte order |
574 | while the simulator uses host byte order */ | |
8bae0a0c | 575 | #ifdef DEBUG |
18c64df6 | 576 | sim_io_printf(sd,"sim_fetch_register(%d=0x%s,mem) : place simulator registers into memory\n",rn,pr_addr(registers[rn])); |
8bae0a0c JSC |
577 | #endif /* DEBUG */ |
578 | ||
0c2c5f61 | 579 | if (cpu->register_widths[rn] == 0) |
18c64df6 AC |
580 | sim_io_eprintf(sd,"Invalid register width for %d (register fetch ignored)\n",rn); |
581 | /* start-sanitize-r5900 */ | |
582 | else if (rn == REGISTER_SA) | |
583 | *((uword64 *)memory) = H2T_8(SA); | |
584 | else if (rn > LAST_EMBED_REGNUM) | |
0c2c5f61 | 585 | *((uword64 *)memory) = H2T_8(cpu->registers1[rn - LAST_EMBED_REGNUM - 1]); |
18c64df6 | 586 | /* end-sanitize-r5900 */ |
0c2c5f61 AC |
587 | else if (cpu->register_widths[rn] == 32) |
588 | *((unsigned int *)memory) = H2T_4 ((unsigned int)(cpu->registers[rn] & 0xFFFFFFFF)); | |
18c64df6 | 589 | else /* 64bit register */ |
0c2c5f61 | 590 | *((uword64 *)memory) = H2T_8 (cpu->registers[rn]); |
50a2a691 | 591 | |
8bae0a0c JSC |
592 | return; |
593 | } | |
50a2a691 | 594 | |
8bae0a0c JSC |
595 | |
596 | void | |
53b9417e DE |
597 | sim_info (sd,verbose) |
598 | SIM_DESC sd; | |
8bae0a0c JSC |
599 | int verbose; |
600 | { | |
601 | /* Accessed from the GDB "info files" command: */ | |
56e7c849 AC |
602 | if (STATE_VERBOSE_P (sd) || verbose) |
603 | { | |
604 | ||
605 | sim_io_printf (sd, "MIPS %d-bit %s endian simulator\n", | |
192ae475 | 606 | WITH_TARGET_WORD_BITSIZE, |
56e7c849 AC |
607 | (CURRENT_TARGET_BYTE_ORDER == BIG_ENDIAN ? "Big" : "Little")); |
608 | ||
8bae0a0c | 609 | #if !defined(FASTSIM) |
56e7c849 AC |
610 | /* It would be a useful feature, if when performing multi-cycle |
611 | simulations (rather than single-stepping) we keep the start and | |
612 | end times of the execution, so that we can give a performance | |
613 | figure for the simulator. */ | |
8bae0a0c | 614 | #endif /* !FASTSIM */ |
56e7c849 AC |
615 | sim_io_printf (sd, "Number of execution cycles = %ld\n", |
616 | (long) sim_events_time (sd)); | |
617 | ||
618 | /* print information pertaining to MIPS ISA and architecture being simulated */ | |
619 | /* things that may be interesting */ | |
620 | /* instructions executed - if available */ | |
621 | /* cycles executed - if available */ | |
622 | /* pipeline stalls - if available */ | |
623 | /* virtual time taken */ | |
624 | /* profiling size */ | |
625 | /* profiling frequency */ | |
626 | /* profile minpc */ | |
627 | /* profile maxpc */ | |
628 | } | |
aa324b9b | 629 | profile_print (sd, STATE_VERBOSE_P (sd), NULL, NULL); |
8bae0a0c JSC |
630 | } |
631 | ||
8bae0a0c | 632 | |
9d52bcb7 | 633 | SIM_RC |
fafce69a | 634 | sim_create_inferior (sd, abfd, argv,env) |
53b9417e | 635 | SIM_DESC sd; |
fafce69a | 636 | struct _bfd *abfd; |
8bae0a0c JSC |
637 | char **argv; |
638 | char **env; | |
639 | { | |
50a2a691 | 640 | |
8bae0a0c | 641 | #ifdef DEBUG |
9d52bcb7 DE |
642 | printf("DBG: sim_create_inferior entered: start_address = 0x%s\n", |
643 | pr_addr(PC)); | |
8bae0a0c JSC |
644 | #endif /* DEBUG */ |
645 | ||
0c2c5f61 | 646 | ColdReset(sd); |
50a2a691 | 647 | |
fafce69a | 648 | if (abfd != NULL) |
01737f42 AC |
649 | { |
650 | /* override PC value set by ColdReset () */ | |
651 | int cpu_nr; | |
652 | for (cpu_nr = 0; cpu_nr < sim_engine_nr_cpus (sd); cpu_nr++) | |
653 | { | |
654 | sim_cpu *cpu = STATE_CPU (sd, cpu_nr); | |
655 | CIA_SET (cpu, (unsigned64) bfd_get_start_address (abfd)); | |
656 | } | |
657 | } | |
2e61a3ad | 658 | |
f24b7b69 | 659 | #if 0 /* def DEBUG */ |
dad6f1f3 | 660 | if (argv || env) |
8bae0a0c | 661 | { |
dad6f1f3 AC |
662 | /* We should really place the argv slot values into the argument |
663 | registers, and onto the stack as required. However, this | |
664 | assumes that we have a stack defined, which is not | |
665 | necessarily true at the moment. */ | |
666 | char **cptr; | |
667 | sim_io_printf(sd,"sim_create_inferior() : passed arguments ignored\n"); | |
668 | for (cptr = argv; (cptr && *cptr); cptr++) | |
669 | printf("DBG: arg \"%s\"\n",*cptr); | |
8bae0a0c JSC |
670 | } |
671 | #endif /* DEBUG */ | |
8bae0a0c | 672 | |
9d52bcb7 | 673 | return SIM_RC_OK; |
8bae0a0c JSC |
674 | } |
675 | ||
8bae0a0c | 676 | void |
53b9417e DE |
677 | sim_do_command (sd,cmd) |
678 | SIM_DESC sd; | |
8bae0a0c JSC |
679 | char *cmd; |
680 | { | |
63be8feb AC |
681 | if (sim_args_command (sd, cmd) != SIM_RC_OK) |
682 | sim_io_printf (sd, "Error: \"%s\" is not a valid MIPS simulator command.\n", | |
683 | cmd); | |
8bae0a0c JSC |
684 | } |
685 | ||
8bae0a0c JSC |
686 | /*---------------------------------------------------------------------------*/ |
687 | /*-- Private simulator support interface ------------------------------------*/ | |
688 | /*---------------------------------------------------------------------------*/ | |
689 | ||
525d929e AC |
690 | /* Read a null terminated string from memory, return in a buffer */ |
691 | static char * | |
692 | fetch_str (sd, addr) | |
693 | SIM_DESC sd; | |
694 | address_word addr; | |
695 | { | |
696 | char *buf; | |
697 | int nr = 0; | |
698 | char null; | |
699 | while (sim_read (sd, addr + nr, &null, 1) == 1 && null != 0) | |
700 | nr++; | |
701 | buf = NZALLOC (char, nr + 1); | |
702 | sim_read (sd, addr, buf, nr); | |
703 | return buf; | |
704 | } | |
705 | ||
a9f7253f | 706 | /* Simple monitor interface (currently setup for the IDT and PMON monitors) */ |
8bae0a0c | 707 | static void |
01737f42 AC |
708 | sim_monitor (SIM_DESC sd, |
709 | sim_cpu *cpu, | |
710 | address_word cia, | |
711 | unsigned int reason) | |
8bae0a0c | 712 | { |
53b9417e DE |
713 | #ifdef DEBUG |
714 | printf("DBG: sim_monitor: entered (reason = %d)\n",reason); | |
715 | #endif /* DEBUG */ | |
716 | ||
8bae0a0c JSC |
717 | /* The IDT monitor actually allows two instructions per vector |
718 | slot. However, the simulator currently causes a trap on each | |
719 | individual instruction. We cheat, and lose the bottom bit. */ | |
720 | reason >>= 1; | |
721 | ||
722 | /* The following callback functions are available, however the | |
723 | monitor we are simulating does not make use of them: get_errno, | |
724 | isatty, lseek, rename, system, time and unlink */ | |
525d929e AC |
725 | switch (reason) |
726 | { | |
727 | ||
8bae0a0c JSC |
728 | case 6: /* int open(char *path,int flags) */ |
729 | { | |
525d929e AC |
730 | char *path = fetch_str (sd, A0); |
731 | V0 = sim_io_open (sd, path, (int)A1); | |
732 | zfree (path); | |
733 | break; | |
8bae0a0c | 734 | } |
8bae0a0c JSC |
735 | |
736 | case 7: /* int read(int file,char *ptr,int len) */ | |
737 | { | |
525d929e AC |
738 | int fd = A0; |
739 | int nr = A2; | |
740 | char *buf = zalloc (nr); | |
741 | V0 = sim_io_read (sd, fd, buf, nr); | |
742 | sim_write (sd, A1, buf, nr); | |
743 | zfree (buf); | |
8bae0a0c JSC |
744 | } |
745 | break; | |
746 | ||
747 | case 8: /* int write(int file,char *ptr,int len) */ | |
748 | { | |
525d929e AC |
749 | int fd = A0; |
750 | int nr = A2; | |
751 | char *buf = zalloc (nr); | |
752 | sim_read (sd, A1, buf, nr); | |
753 | V0 = sim_io_write (sd, fd, buf, nr); | |
754 | zfree (buf); | |
755 | break; | |
8bae0a0c | 756 | } |
8bae0a0c JSC |
757 | |
758 | case 10: /* int close(int file) */ | |
525d929e AC |
759 | { |
760 | V0 = sim_io_close (sd, (int)A0); | |
761 | break; | |
762 | } | |
8bae0a0c | 763 | |
e0e0fc76 MA |
764 | case 2: /* Densan monitor: char inbyte(int waitflag) */ |
765 | { | |
766 | if (A0 == 0) /* waitflag == NOWAIT */ | |
192ae475 | 767 | V0 = (unsigned_word)-1; |
e0e0fc76 MA |
768 | } |
769 | /* Drop through to case 11 */ | |
770 | ||
8bae0a0c JSC |
771 | case 11: /* char inbyte(void) */ |
772 | { | |
773 | char tmp; | |
525d929e AC |
774 | if (sim_io_read_stdin (sd, &tmp, sizeof(char)) != sizeof(char)) |
775 | { | |
776 | sim_io_error(sd,"Invalid return from character read"); | |
192ae475 | 777 | V0 = (unsigned_word)-1; |
525d929e | 778 | } |
8bae0a0c | 779 | else |
192ae475 | 780 | V0 = (unsigned_word)tmp; |
525d929e | 781 | break; |
8bae0a0c | 782 | } |
8bae0a0c | 783 | |
e0e0fc76 | 784 | case 3: /* Densan monitor: void co(char chr) */ |
8bae0a0c JSC |
785 | case 12: /* void outbyte(char chr) : write a byte to "stdout" */ |
786 | { | |
787 | char tmp = (char)(A0 & 0xFF); | |
525d929e AC |
788 | sim_io_write_stdout (sd, &tmp, sizeof(char)); |
789 | break; | |
8bae0a0c | 790 | } |
8bae0a0c JSC |
791 | |
792 | case 17: /* void _exit() */ | |
525d929e AC |
793 | { |
794 | sim_io_eprintf (sd, "sim_monitor(17): _exit(int reason) to be coded\n"); | |
01737f42 | 795 | sim_engine_halt (SD, CPU, NULL, NULL_CIA, sim_exited, |
525d929e AC |
796 | (unsigned int)(A0 & 0xFFFFFFFF)); |
797 | break; | |
798 | } | |
8bae0a0c | 799 | |
280f90e1 AMT |
800 | case 28 : /* PMON flush_cache */ |
801 | break; | |
802 | ||
8bae0a0c JSC |
803 | case 55: /* void get_mem_info(unsigned int *ptr) */ |
804 | /* in: A0 = pointer to three word memory location */ | |
805 | /* out: [A0 + 0] = size */ | |
806 | /* [A0 + 4] = instruction cache size */ | |
807 | /* [A0 + 8] = data cache size */ | |
808 | { | |
525d929e AC |
809 | address_word value = MEM_SIZE /* FIXME STATE_MEM_SIZE (sd) */; |
810 | H2T (value); | |
811 | sim_write (sd, A0, (char *)&value, sizeof (value)); | |
030843d7 | 812 | /* sim_io_eprintf (sd, "sim: get_mem_info() depreciated\n"); */ |
525d929e | 813 | break; |
8bae0a0c | 814 | } |
525d929e | 815 | |
a9f7253f JSC |
816 | case 158 : /* PMON printf */ |
817 | /* in: A0 = pointer to format string */ | |
818 | /* A1 = optional argument 1 */ | |
819 | /* A2 = optional argument 2 */ | |
820 | /* A3 = optional argument 3 */ | |
821 | /* out: void */ | |
f24b7b69 | 822 | /* The following is based on the PMON printf source */ |
a9f7253f | 823 | { |
525d929e AC |
824 | address_word s = A0; |
825 | char c; | |
826 | signed_word *ap = &A1; /* 1st argument */ | |
f24b7b69 JSC |
827 | /* This isn't the quickest way, since we call the host print |
828 | routine for every character almost. But it does avoid | |
829 | having to allocate and manage a temporary string buffer. */ | |
525d929e AC |
830 | /* TODO: Include check that we only use three arguments (A1, |
831 | A2 and A3) */ | |
832 | while (sim_read (sd, s++, &c, 1) && c != '\0') | |
833 | { | |
834 | if (c == '%') | |
835 | { | |
836 | char tmp[40]; | |
837 | enum {FMT_RJUST, FMT_LJUST, FMT_RJUST0, FMT_CENTER} fmt = FMT_RJUST; | |
838 | int width = 0, trunc = 0, haddot = 0, longlong = 0; | |
839 | while (sim_read (sd, s++, &c, 1) && c != '\0') | |
840 | { | |
841 | if (strchr ("dobxXulscefg%", s)) | |
842 | break; | |
843 | else if (c == '-') | |
844 | fmt = FMT_LJUST; | |
845 | else if (c == '0') | |
846 | fmt = FMT_RJUST0; | |
847 | else if (c == '~') | |
848 | fmt = FMT_CENTER; | |
849 | else if (c == '*') | |
850 | { | |
851 | if (haddot) | |
852 | trunc = (int)*ap++; | |
853 | else | |
854 | width = (int)*ap++; | |
855 | } | |
856 | else if (c >= '1' && c <= '9') | |
857 | { | |
858 | address_word t = s; | |
859 | unsigned int n; | |
860 | while (sim_read (sd, s++, &c, 1) == 1 && isdigit (c)) | |
861 | tmp[s - t] = c; | |
862 | tmp[s - t] = '\0'; | |
863 | n = (unsigned int)strtol(tmp,NULL,10); | |
864 | if (haddot) | |
865 | trunc = n; | |
866 | else | |
867 | width = n; | |
868 | s--; | |
869 | } | |
870 | else if (c == '.') | |
871 | haddot = 1; | |
872 | } | |
873 | switch (c) | |
874 | { | |
875 | case '%': | |
876 | sim_io_printf (sd, "%%"); | |
877 | break; | |
878 | case 's': | |
879 | if ((int)*ap != 0) | |
880 | { | |
881 | address_word p = *ap++; | |
882 | char ch; | |
883 | while (sim_read (sd, p++, &ch, 1) == 1 && ch != '\0') | |
884 | sim_io_printf(sd, "%c", ch); | |
885 | } | |
886 | else | |
887 | sim_io_printf(sd,"(null)"); | |
888 | break; | |
889 | case 'c': | |
890 | sim_io_printf (sd, "%c", (int)*ap++); | |
891 | break; | |
892 | default: | |
893 | if (c == 'l') | |
894 | { | |
895 | sim_read (sd, s++, &c, 1); | |
896 | if (c == 'l') | |
897 | { | |
898 | longlong = 1; | |
899 | sim_read (sd, s++, &c, 1); | |
900 | } | |
901 | } | |
902 | if (strchr ("dobxXu", c)) | |
903 | { | |
904 | word64 lv = (word64) *ap++; | |
905 | if (c == 'b') | |
906 | sim_io_printf(sd,"<binary not supported>"); | |
907 | else | |
908 | { | |
909 | sprintf (tmp, "%%%s%c", longlong ? "ll" : "", c); | |
910 | if (longlong) | |
911 | sim_io_printf(sd, tmp, lv); | |
912 | else | |
913 | sim_io_printf(sd, tmp, (int)lv); | |
914 | } | |
915 | } | |
916 | else if (strchr ("eEfgG", c)) | |
917 | { | |
918 | double dbl = *(double*)(ap++); | |
919 | sprintf (tmp, "%%%d.%d%c", width, trunc, c); | |
920 | sim_io_printf (sd, tmp, dbl); | |
921 | trunc = 0; | |
922 | } | |
923 | } | |
924 | } | |
925 | else | |
926 | sim_io_printf(sd, "%c", c); | |
927 | } | |
928 | break; | |
a9f7253f | 929 | } |
a9f7253f | 930 | |
8bae0a0c | 931 | default: |
525d929e | 932 | sim_io_error (sd, "TODO: sim_monitor(%d) : PC = 0x%s\n", |
95469ceb | 933 | reason, pr_addr(cia)); |
8bae0a0c JSC |
934 | break; |
935 | } | |
936 | return; | |
937 | } | |
938 | ||
7e6c297e ILT |
939 | /* Store a word into memory. */ |
940 | ||
941 | static void | |
01737f42 AC |
942 | store_word (SIM_DESC sd, |
943 | sim_cpu *cpu, | |
944 | address_word cia, | |
945 | uword64 vaddr, | |
192ae475 | 946 | signed_word val) |
7e6c297e | 947 | { |
dad6f1f3 | 948 | address_word paddr; |
7e6c297e ILT |
949 | int uncached; |
950 | ||
951 | if ((vaddr & 3) != 0) | |
18c64df6 | 952 | SignalExceptionAddressStore (); |
7e6c297e ILT |
953 | else |
954 | { | |
955 | if (AddressTranslation (vaddr, isDATA, isSTORE, &paddr, &uncached, | |
956 | isTARGET, isREAL)) | |
957 | { | |
958 | const uword64 mask = 7; | |
959 | uword64 memval; | |
960 | unsigned int byte; | |
961 | ||
962 | paddr = (paddr & ~mask) | ((paddr & mask) ^ (ReverseEndian << 2)); | |
963 | byte = (vaddr & mask) ^ (BigEndianCPU << 2); | |
964 | memval = ((uword64) val) << (8 * byte); | |
53b9417e | 965 | StoreMemory (uncached, AccessLength_WORD, memval, 0, paddr, vaddr, |
7e6c297e ILT |
966 | isREAL); |
967 | } | |
968 | } | |
969 | } | |
970 | ||
971 | /* Load a word from memory. */ | |
972 | ||
192ae475 | 973 | static signed_word |
01737f42 AC |
974 | load_word (SIM_DESC sd, |
975 | sim_cpu *cpu, | |
976 | address_word cia, | |
977 | uword64 vaddr) | |
7e6c297e ILT |
978 | { |
979 | if ((vaddr & 3) != 0) | |
18c64df6 | 980 | SignalExceptionAddressLoad (); |
7e6c297e ILT |
981 | else |
982 | { | |
dad6f1f3 | 983 | address_word paddr; |
7e6c297e ILT |
984 | int uncached; |
985 | ||
986 | if (AddressTranslation (vaddr, isDATA, isLOAD, &paddr, &uncached, | |
987 | isTARGET, isREAL)) | |
988 | { | |
989 | const uword64 mask = 0x7; | |
990 | const unsigned int reverse = ReverseEndian ? 1 : 0; | |
991 | const unsigned int bigend = BigEndianCPU ? 1 : 0; | |
992 | uword64 memval; | |
993 | unsigned int byte; | |
994 | ||
995 | paddr = (paddr & ~mask) | ((paddr & mask) ^ (reverse << 2)); | |
53b9417e | 996 | LoadMemory (&memval,NULL,uncached, AccessLength_WORD, paddr, vaddr, |
7e6c297e ILT |
997 | isDATA, isREAL); |
998 | byte = (vaddr & mask) ^ (bigend << 2); | |
999 | return SIGNEXTEND (((memval >> (8 * byte)) & 0xffffffff), 32); | |
1000 | } | |
1001 | } | |
1002 | ||
1003 | return 0; | |
1004 | } | |
1005 | ||
1006 | /* Simulate the mips16 entry and exit pseudo-instructions. These | |
1007 | would normally be handled by the reserved instruction exception | |
1008 | code, but for ease of simulation we just handle them directly. */ | |
1009 | ||
1010 | static void | |
01737f42 AC |
1011 | mips16_entry (SIM_DESC sd, |
1012 | sim_cpu *cpu, | |
1013 | address_word cia, | |
1014 | unsigned int insn) | |
7e6c297e ILT |
1015 | { |
1016 | int aregs, sregs, rreg; | |
1017 | ||
53b9417e DE |
1018 | #ifdef DEBUG |
1019 | printf("DBG: mips16_entry: entered (insn = 0x%08X)\n",insn); | |
1020 | #endif /* DEBUG */ | |
1021 | ||
7e6c297e ILT |
1022 | aregs = (insn & 0x700) >> 8; |
1023 | sregs = (insn & 0x0c0) >> 6; | |
1024 | rreg = (insn & 0x020) >> 5; | |
1025 | ||
da0bce9c ILT |
1026 | /* This should be checked by the caller. */ |
1027 | if (sregs == 3) | |
7e6c297e ILT |
1028 | abort (); |
1029 | ||
da0bce9c | 1030 | if (aregs < 5) |
7e6c297e ILT |
1031 | { |
1032 | int i; | |
192ae475 | 1033 | signed_word tsp; |
7e6c297e ILT |
1034 | |
1035 | /* This is the entry pseudo-instruction. */ | |
1036 | ||
1037 | for (i = 0; i < aregs; i++) | |
01737f42 | 1038 | store_word (SD, CPU, cia, (uword64) (SP + 4 * i), GPR[i + 4]); |
7e6c297e ILT |
1039 | |
1040 | tsp = SP; | |
1041 | SP -= 32; | |
1042 | ||
1043 | if (rreg) | |
1044 | { | |
1045 | tsp -= 4; | |
01737f42 | 1046 | store_word (SD, CPU, cia, (uword64) tsp, RA); |
7e6c297e ILT |
1047 | } |
1048 | ||
1049 | for (i = 0; i < sregs; i++) | |
1050 | { | |
1051 | tsp -= 4; | |
01737f42 | 1052 | store_word (SD, CPU, cia, (uword64) tsp, GPR[16 + i]); |
7e6c297e ILT |
1053 | } |
1054 | } | |
1055 | else | |
1056 | { | |
1057 | int i; | |
192ae475 | 1058 | signed_word tsp; |
7e6c297e ILT |
1059 | |
1060 | /* This is the exit pseudo-instruction. */ | |
1061 | ||
1062 | tsp = SP + 32; | |
1063 | ||
1064 | if (rreg) | |
1065 | { | |
1066 | tsp -= 4; | |
01737f42 | 1067 | RA = load_word (SD, CPU, cia, (uword64) tsp); |
7e6c297e ILT |
1068 | } |
1069 | ||
1070 | for (i = 0; i < sregs; i++) | |
1071 | { | |
1072 | tsp -= 4; | |
01737f42 | 1073 | GPR[i + 16] = load_word (SD, CPU, cia, (uword64) tsp); |
7e6c297e ILT |
1074 | } |
1075 | ||
1076 | SP += 32; | |
1077 | ||
192ae475 | 1078 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) |
da0bce9c | 1079 | { |
192ae475 AC |
1080 | if (aregs == 5) |
1081 | { | |
1082 | FGR[0] = WORD64LO (GPR[4]); | |
1083 | FPR_STATE[0] = fmt_uninterpreted; | |
1084 | } | |
1085 | else if (aregs == 6) | |
1086 | { | |
1087 | FGR[0] = WORD64LO (GPR[5]); | |
1088 | FGR[1] = WORD64LO (GPR[4]); | |
1089 | FPR_STATE[0] = fmt_uninterpreted; | |
1090 | FPR_STATE[1] = fmt_uninterpreted; | |
1091 | } | |
1092 | } | |
da0bce9c | 1093 | |
7e6c297e ILT |
1094 | PC = RA; |
1095 | } | |
192ae475 | 1096 | |
7e6c297e ILT |
1097 | } |
1098 | ||
8bae0a0c JSC |
1099 | /*-- trace support ----------------------------------------------------------*/ |
1100 | ||
1101 | /* The TRACE support is provided (if required) in the memory accessing | |
1102 | routines. Since we are also providing the architecture specific | |
1103 | features, the architecture simulation code can also deal with | |
1104 | notifying the TRACE world of cache flushes, etc. Similarly we do | |
1105 | not need to provide profiling support in the simulator engine, | |
1106 | since we can sample in the instruction fetch control loop. By | |
1107 | defining the TRACE manifest, we add tracing as a run-time | |
1108 | option. */ | |
1109 | ||
1110 | #if defined(TRACE) | |
1111 | /* Tracing by default produces "din" format (as required by | |
1112 | dineroIII). Each line of such a trace file *MUST* have a din label | |
1113 | and address field. The rest of the line is ignored, so comments can | |
1114 | be included if desired. The first field is the label which must be | |
1115 | one of the following values: | |
1116 | ||
1117 | 0 read data | |
1118 | 1 write data | |
1119 | 2 instruction fetch | |
1120 | 3 escape record (treated as unknown access type) | |
1121 | 4 escape record (causes cache flush) | |
1122 | ||
1123 | The address field is a 32bit (lower-case) hexadecimal address | |
1124 | value. The address should *NOT* be preceded by "0x". | |
1125 | ||
1126 | The size of the memory transfer is not important when dealing with | |
1127 | cache lines (as long as no more than a cache line can be | |
1128 | transferred in a single operation :-), however more information | |
1129 | could be given following the dineroIII requirement to allow more | |
1130 | complete memory and cache simulators to provide better | |
1131 | results. i.e. the University of Pisa has a cache simulator that can | |
1132 | also take bus size and speed as (variable) inputs to calculate | |
1133 | complete system performance (a much more useful ability when trying | |
1134 | to construct an end product, rather than a processor). They | |
1135 | currently have an ARM version of their tool called ChARM. */ | |
1136 | ||
e3d12c65 | 1137 | |
030843d7 | 1138 | void |
01737f42 AC |
1139 | dotrace (SIM_DESC sd, |
1140 | sim_cpu *cpu, | |
1141 | FILE *tracefh, | |
1142 | int type, | |
1143 | SIM_ADDR address, | |
1144 | int width, | |
1145 | char *comment,...) | |
8bae0a0c | 1146 | { |
0c2c5f61 | 1147 | if (STATE & simTRACE) { |
8bae0a0c | 1148 | va_list ap; |
53b9417e | 1149 | fprintf(tracefh,"%d %s ; width %d ; ", |
6429b296 | 1150 | type, |
53b9417e DE |
1151 | pr_addr(address), |
1152 | width); | |
8bae0a0c | 1153 | va_start(ap,comment); |
6429b296 | 1154 | vfprintf(tracefh,comment,ap); |
8bae0a0c JSC |
1155 | va_end(ap); |
1156 | fprintf(tracefh,"\n"); | |
1157 | } | |
1158 | /* NOTE: Since the "din" format will only accept 32bit addresses, and | |
1159 | we may be generating 64bit ones, we should put the hi-32bits of the | |
1160 | address into the comment field. */ | |
1161 | ||
1162 | /* TODO: Provide a buffer for the trace lines. We can then avoid | |
1163 | performing writes until the buffer is filled, or the file is | |
1164 | being closed. */ | |
1165 | ||
1166 | /* NOTE: We could consider adding a comment field to the "din" file | |
1167 | produced using type 3 markers (unknown access). This would then | |
1168 | allow information about the program that the "din" is for, and | |
1169 | the MIPs world that was being simulated, to be placed into the | |
1170 | trace file. */ | |
1171 | ||
1172 | return; | |
1173 | } | |
1174 | #endif /* TRACE */ | |
1175 | ||
1176 | /*---------------------------------------------------------------------------*/ | |
1177 | /*-- simulator engine -------------------------------------------------------*/ | |
1178 | /*---------------------------------------------------------------------------*/ | |
1179 | ||
1180 | static void | |
01737f42 | 1181 | ColdReset (SIM_DESC sd) |
8bae0a0c | 1182 | { |
01737f42 AC |
1183 | int cpu_nr; |
1184 | for (cpu_nr = 0; cpu_nr < sim_engine_nr_cpus (sd); cpu_nr++) | |
dad6f1f3 | 1185 | { |
01737f42 AC |
1186 | sim_cpu *cpu = STATE_CPU (sd, cpu_nr); |
1187 | /* RESET: Fixed PC address: */ | |
1188 | PC = UNSIGNED64 (0xFFFFFFFFBFC00000); | |
1189 | /* The reset vector address is in the unmapped, uncached memory space. */ | |
1190 | ||
1191 | SR &= ~(status_SR | status_TS | status_RP); | |
1192 | SR |= (status_ERL | status_BEV); | |
1193 | ||
1194 | /* Cheat and allow access to the complete register set immediately */ | |
1195 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT | |
1196 | && WITH_TARGET_WORD_BITSIZE == 64) | |
1197 | SR |= status_FR; /* 64bit registers */ | |
1198 | ||
1199 | /* Ensure that any instructions with pending register updates are | |
1200 | cleared: */ | |
1201 | { | |
1202 | int loop; | |
1203 | for (loop = 0; (loop < PSLOTS); loop++) | |
1204 | PENDING_SLOT_REG[loop] = (LAST_EMBED_REGNUM + 1); | |
1205 | PENDING_IN = PENDING_OUT = PENDING_TOTAL = 0; | |
1206 | } | |
1207 | ||
1208 | /* Initialise the FPU registers to the unknown state */ | |
1209 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) | |
1210 | { | |
1211 | int rn; | |
1212 | for (rn = 0; (rn < 32); rn++) | |
1213 | FPR_STATE[rn] = fmt_uninterpreted; | |
1214 | } | |
1215 | ||
dad6f1f3 | 1216 | } |
8bae0a0c JSC |
1217 | } |
1218 | ||
dad6f1f3 AC |
1219 | /* Description from page A-22 of the "MIPS IV Instruction Set" manual |
1220 | (revision 3.1) */ | |
8bae0a0c JSC |
1221 | /* Translate a virtual address to a physical address and cache |
1222 | coherence algorithm describing the mechanism used to resolve the | |
1223 | memory reference. Given the virtual address vAddr, and whether the | |
1224 | reference is to Instructions ot Data (IorD), find the corresponding | |
1225 | physical address (pAddr) and the cache coherence algorithm (CCA) | |
1226 | used to resolve the reference. If the virtual address is in one of | |
1227 | the unmapped address spaces the physical address and the CCA are | |
1228 | determined directly by the virtual address. If the virtual address | |
1229 | is in one of the mapped address spaces then the TLB is used to | |
1230 | determine the physical address and access type; if the required | |
1231 | translation is not present in the TLB or the desired access is not | |
1232 | permitted the function fails and an exception is taken. | |
1233 | ||
dad6f1f3 AC |
1234 | NOTE: Normally (RAW == 0), when address translation fails, this |
1235 | function raises an exception and does not return. */ | |
8bae0a0c | 1236 | |
18c64df6 | 1237 | int |
01737f42 AC |
1238 | address_translation (SIM_DESC sd, |
1239 | sim_cpu *cpu, | |
1240 | address_word cia, | |
1241 | address_word vAddr, | |
1242 | int IorD, | |
1243 | int LorS, | |
1244 | address_word *pAddr, | |
1245 | int *CCA, | |
1246 | int raw) | |
8bae0a0c JSC |
1247 | { |
1248 | int res = -1; /* TRUE : Assume good return */ | |
1249 | ||
1250 | #ifdef DEBUG | |
18c64df6 | 1251 | sim_io_printf(sd,"AddressTranslation(0x%s,%s,%s,...);\n",pr_addr(vAddr),(IorD ? "isDATA" : "isINSTRUCTION"),(LorS ? "iSTORE" : "isLOAD")); |
8bae0a0c JSC |
1252 | #endif |
1253 | ||
1254 | /* Check that the address is valid for this memory model */ | |
1255 | ||
1256 | /* For a simple (flat) memory model, we simply pass virtual | |
1257 | addressess through (mostly) unchanged. */ | |
1258 | vAddr &= 0xFFFFFFFF; | |
a9f7253f | 1259 | |
8bae0a0c JSC |
1260 | *pAddr = vAddr; /* default for isTARGET */ |
1261 | *CCA = Uncached; /* not used for isHOST */ | |
1262 | ||
8bae0a0c JSC |
1263 | return(res); |
1264 | } | |
1265 | ||
63be8feb AC |
1266 | /* Description from page A-23 of the "MIPS IV Instruction Set" manual |
1267 | (revision 3.1) */ | |
8bae0a0c JSC |
1268 | /* Prefetch data from memory. Prefetch is an advisory instruction for |
1269 | which an implementation specific action is taken. The action taken | |
1270 | may increase performance, but must not change the meaning of the | |
1271 | program, or alter architecturally-visible state. */ | |
50a2a691 | 1272 | |
ea985d24 | 1273 | void |
01737f42 AC |
1274 | prefetch (SIM_DESC sd, |
1275 | sim_cpu *cpu, | |
1276 | address_word cia, | |
1277 | int CCA, | |
1278 | address_word pAddr, | |
1279 | address_word vAddr, | |
1280 | int DATA, | |
1281 | int hint) | |
8bae0a0c JSC |
1282 | { |
1283 | #ifdef DEBUG | |
18c64df6 | 1284 | sim_io_printf(sd,"Prefetch(%d,0x%s,0x%s,%d,%d);\n",CCA,pr_addr(pAddr),pr_addr(vAddr),DATA,hint); |
8bae0a0c JSC |
1285 | #endif /* DEBUG */ |
1286 | ||
1287 | /* For our simple memory model we do nothing */ | |
1288 | return; | |
1289 | } | |
1290 | ||
63be8feb AC |
1291 | /* Description from page A-22 of the "MIPS IV Instruction Set" manual |
1292 | (revision 3.1) */ | |
8bae0a0c JSC |
1293 | /* Load a value from memory. Use the cache and main memory as |
1294 | specified in the Cache Coherence Algorithm (CCA) and the sort of | |
1295 | access (IorD) to find the contents of AccessLength memory bytes | |
1296 | starting at physical location pAddr. The data is returned in the | |
1297 | fixed width naturally-aligned memory element (MemElem). The | |
1298 | low-order two (or three) bits of the address and the AccessLength | |
1299 | indicate which of the bytes within MemElem needs to be given to the | |
1300 | processor. If the memory access type of the reference is uncached | |
1301 | then only the referenced bytes are read from memory and valid | |
1302 | within the memory element. If the access type is cached, and the | |
1303 | data is not present in cache, an implementation specific size and | |
1304 | alignment block of memory is read and loaded into the cache to | |
1305 | satisfy a load reference. At a minimum, the block is the entire | |
1306 | memory element. */ | |
18c64df6 | 1307 | void |
01737f42 AC |
1308 | load_memory (SIM_DESC sd, |
1309 | sim_cpu *cpu, | |
1310 | address_word cia, | |
1311 | uword64* memvalp, | |
1312 | uword64* memval1p, | |
1313 | int CCA, | |
1314 | int AccessLength, | |
1315 | address_word pAddr, | |
1316 | address_word vAddr, | |
1317 | int IorD) | |
8bae0a0c | 1318 | { |
50a2a691 AC |
1319 | uword64 value = 0; |
1320 | uword64 value1 = 0; | |
8bae0a0c JSC |
1321 | |
1322 | #ifdef DEBUG | |
63be8feb | 1323 | sim_io_printf(sd,"DBG: LoadMemory(%p,%p,%d,%d,0x%s,0x%s,%s)\n",memvalp,memval1p,CCA,AccessLength,pr_addr(pAddr),pr_addr(vAddr),(IorD ? "isDATA" : "isINSTRUCTION")); |
8bae0a0c JSC |
1324 | #endif /* DEBUG */ |
1325 | ||
1326 | #if defined(WARN_MEM) | |
1327 | if (CCA != uncached) | |
63be8feb | 1328 | sim_io_eprintf(sd,"LoadMemory CCA (%d) is not uncached (currently all accesses treated as cached)\n",CCA); |
8bae0a0c JSC |
1329 | #endif /* WARN_MEM */ |
1330 | ||
8bae0a0c JSC |
1331 | /* If instruction fetch then we need to check that the two lo-order |
1332 | bits are zero, otherwise raise a InstructionFetch exception: */ | |
6429b296 JW |
1333 | if ((IorD == isINSTRUCTION) |
1334 | && ((pAddr & 0x3) != 0) | |
1335 | && (((pAddr & 0x1) != 0) || ((vAddr & 0x1) == 0))) | |
63be8feb AC |
1336 | SignalExceptionInstructionFetch (); |
1337 | ||
1338 | if (((pAddr & LOADDRMASK) + AccessLength) > LOADDRMASK) | |
1339 | { | |
1340 | /* In reality this should be a Bus Error */ | |
1341 | sim_io_error (sd, "AccessLength of %d would extend over %dbit aligned boundary for physical address 0x%s\n", | |
1342 | AccessLength, | |
1343 | (LOADDRMASK + 1) << 2, | |
1344 | pr_addr (pAddr)); | |
1345 | } | |
8bae0a0c | 1346 | |
8bae0a0c | 1347 | #if defined(TRACE) |
01737f42 | 1348 | dotrace (SD, CPU, tracefh,((IorD == isDATA) ? 0 : 2),(unsigned int)(pAddr&0xFFFFFFFF),(AccessLength + 1),"load%s",((IorD == isDATA) ? "" : " instruction")); |
8bae0a0c | 1349 | #endif /* TRACE */ |
63be8feb AC |
1350 | |
1351 | /* Read the specified number of bytes from memory. Adjust for | |
1352 | host/target byte ordering/ Align the least significant byte | |
1353 | read. */ | |
8bae0a0c | 1354 | |
63be8feb AC |
1355 | switch (AccessLength) |
1356 | { | |
1357 | case AccessLength_QUADWORD : | |
1358 | { | |
01737f42 | 1359 | unsigned_16 val = sim_core_read_aligned_16 (cpu, NULL_CIA, |
63be8feb AC |
1360 | sim_core_read_map, pAddr); |
1361 | value1 = VH8_16 (val); | |
1362 | value = VL8_16 (val); | |
1363 | break; | |
8bae0a0c | 1364 | } |
63be8feb | 1365 | case AccessLength_DOUBLEWORD : |
01737f42 | 1366 | value = sim_core_read_aligned_8 (cpu, NULL_CIA, |
63be8feb AC |
1367 | sim_core_read_map, pAddr); |
1368 | break; | |
1369 | case AccessLength_SEPTIBYTE : | |
01737f42 | 1370 | value = sim_core_read_misaligned_7 (cpu, NULL_CIA, |
63be8feb AC |
1371 | sim_core_read_map, pAddr); |
1372 | case AccessLength_SEXTIBYTE : | |
01737f42 | 1373 | value = sim_core_read_misaligned_6 (cpu, NULL_CIA, |
63be8feb AC |
1374 | sim_core_read_map, pAddr); |
1375 | case AccessLength_QUINTIBYTE : | |
01737f42 | 1376 | value = sim_core_read_misaligned_5 (cpu, NULL_CIA, |
63be8feb AC |
1377 | sim_core_read_map, pAddr); |
1378 | case AccessLength_WORD : | |
01737f42 | 1379 | value = sim_core_read_aligned_4 (cpu, NULL_CIA, |
63be8feb AC |
1380 | sim_core_read_map, pAddr); |
1381 | break; | |
1382 | case AccessLength_TRIPLEBYTE : | |
01737f42 | 1383 | value = sim_core_read_misaligned_3 (cpu, NULL_CIA, |
63be8feb AC |
1384 | sim_core_read_map, pAddr); |
1385 | case AccessLength_HALFWORD : | |
01737f42 | 1386 | value = sim_core_read_aligned_2 (cpu, NULL_CIA, |
63be8feb AC |
1387 | sim_core_read_map, pAddr); |
1388 | break; | |
1389 | case AccessLength_BYTE : | |
01737f42 | 1390 | value = sim_core_read_aligned_1 (cpu, NULL_CIA, |
63be8feb AC |
1391 | sim_core_read_map, pAddr); |
1392 | break; | |
1393 | default: | |
1394 | abort (); | |
1395 | } | |
1396 | ||
8bae0a0c | 1397 | #ifdef DEBUG |
63be8feb AC |
1398 | printf("DBG: LoadMemory() : (offset %d) : value = 0x%s%s\n", |
1399 | (int)(pAddr & LOADDRMASK),pr_uword64(value1),pr_uword64(value)); | |
8bae0a0c | 1400 | #endif /* DEBUG */ |
63be8feb AC |
1401 | |
1402 | /* See also store_memory. */ | |
1403 | if (AccessLength <= AccessLength_DOUBLEWORD) | |
1404 | { | |
1405 | if (BigEndianMem) | |
1406 | /* for big endian target, byte (pAddr&LOADDRMASK == 0) is | |
1407 | shifted to the most significant byte position. */ | |
1408 | value <<= (((7 - (pAddr & LOADDRMASK)) - AccessLength) * 8); | |
1409 | else | |
1410 | /* For little endian target, byte (pAddr&LOADDRMASK == 0) | |
1411 | is already in the correct postition. */ | |
1412 | value <<= ((pAddr & LOADDRMASK) * 8); | |
1413 | } | |
1414 | ||
8bae0a0c | 1415 | #ifdef DEBUG |
63be8feb AC |
1416 | printf("DBG: LoadMemory() : shifted value = 0x%s%s\n", |
1417 | pr_uword64(value1),pr_uword64(value)); | |
e871dd18 | 1418 | #endif /* DEBUG */ |
63be8feb | 1419 | |
525d929e AC |
1420 | *memvalp = value; |
1421 | if (memval1p) *memval1p = value1; | |
8bae0a0c JSC |
1422 | } |
1423 | ||
53b9417e | 1424 | |
50a2a691 AC |
1425 | /* Description from page A-23 of the "MIPS IV Instruction Set" manual |
1426 | (revision 3.1) */ | |
8bae0a0c JSC |
1427 | /* Store a value to memory. The specified data is stored into the |
1428 | physical location pAddr using the memory hierarchy (data caches and | |
1429 | main memory) as specified by the Cache Coherence Algorithm | |
1430 | (CCA). The MemElem contains the data for an aligned, fixed-width | |
1431 | memory element (word for 32-bit processors, doubleword for 64-bit | |
1432 | processors), though only the bytes that will actually be stored to | |
1433 | memory need to be valid. The low-order two (or three) bits of pAddr | |
1434 | and the AccessLength field indicates which of the bytes within the | |
1435 | MemElem data should actually be stored; only these bytes in memory | |
1436 | will be changed. */ | |
53b9417e | 1437 | |
18c64df6 | 1438 | void |
01737f42 AC |
1439 | store_memory (SIM_DESC sd, |
1440 | sim_cpu *cpu, | |
1441 | address_word cia, | |
1442 | int CCA, | |
1443 | int AccessLength, | |
1444 | uword64 MemElem, | |
1445 | uword64 MemElem1, /* High order 64 bits */ | |
1446 | address_word pAddr, | |
1447 | address_word vAddr) | |
8bae0a0c JSC |
1448 | { |
1449 | #ifdef DEBUG | |
63be8feb | 1450 | sim_io_printf(sd,"DBG: StoreMemory(%d,%d,0x%s,0x%s,0x%s,0x%s)\n",CCA,AccessLength,pr_uword64(MemElem),pr_uword64(MemElem1),pr_addr(pAddr),pr_addr(vAddr)); |
8bae0a0c | 1451 | #endif /* DEBUG */ |
63be8feb | 1452 | |
8bae0a0c JSC |
1453 | #if defined(WARN_MEM) |
1454 | if (CCA != uncached) | |
63be8feb | 1455 | sim_io_eprintf(sd,"StoreMemory CCA (%d) is not uncached (currently all accesses treated as cached)\n",CCA); |
8bae0a0c | 1456 | #endif /* WARN_MEM */ |
63be8feb AC |
1457 | |
1458 | if (((pAddr & LOADDRMASK) + AccessLength) > LOADDRMASK) | |
1459 | sim_io_error(sd,"AccessLength of %d would extend over %dbit aligned boundary for physical address 0x%s\n",AccessLength,(LOADDRMASK + 1)<<2,pr_addr(pAddr)); | |
1460 | ||
8bae0a0c | 1461 | #if defined(TRACE) |
01737f42 | 1462 | dotrace (SD, CPU, tracefh,1,(unsigned int)(pAddr&0xFFFFFFFF),(AccessLength + 1),"store"); |
8bae0a0c | 1463 | #endif /* TRACE */ |
63be8feb | 1464 | |
8bae0a0c | 1465 | #ifdef DEBUG |
63be8feb | 1466 | printf("DBG: StoreMemory: offset = %d MemElem = 0x%s%s\n",(unsigned int)(pAddr & LOADDRMASK),pr_uword64(MemElem1),pr_uword64(MemElem)); |
8bae0a0c | 1467 | #endif /* DEBUG */ |
63be8feb AC |
1468 | |
1469 | /* See also load_memory */ | |
1470 | if (AccessLength <= AccessLength_DOUBLEWORD) | |
1471 | { | |
1472 | if (BigEndianMem) | |
1473 | /* for big endian target, byte (pAddr&LOADDRMASK == 0) is | |
1474 | shifted to the most significant byte position. */ | |
1475 | MemElem >>= (((7 - (pAddr & LOADDRMASK)) - AccessLength) * 8); | |
1476 | else | |
1477 | /* For little endian target, byte (pAddr&LOADDRMASK == 0) | |
1478 | is already in the correct postition. */ | |
1479 | MemElem >>= ((pAddr & LOADDRMASK) * 8); | |
1480 | } | |
1481 | ||
8bae0a0c | 1482 | #ifdef DEBUG |
63be8feb | 1483 | printf("DBG: StoreMemory: shift = %d MemElem = 0x%s%s\n",shift,pr_uword64(MemElem1),pr_uword64(MemElem)); |
8bae0a0c | 1484 | #endif /* DEBUG */ |
63be8feb AC |
1485 | |
1486 | switch (AccessLength) | |
1487 | { | |
1488 | case AccessLength_QUADWORD : | |
1489 | { | |
1490 | unsigned_16 val = U16_8 (MemElem1, MemElem); | |
01737f42 | 1491 | sim_core_write_aligned_16 (cpu, NULL_CIA, |
63be8feb AC |
1492 | sim_core_write_map, pAddr, val); |
1493 | break; | |
8bae0a0c | 1494 | } |
63be8feb | 1495 | case AccessLength_DOUBLEWORD : |
01737f42 | 1496 | sim_core_write_aligned_8 (cpu, NULL_CIA, |
63be8feb AC |
1497 | sim_core_write_map, pAddr, MemElem); |
1498 | break; | |
1499 | case AccessLength_SEPTIBYTE : | |
01737f42 | 1500 | sim_core_write_misaligned_7 (cpu, NULL_CIA, |
63be8feb AC |
1501 | sim_core_write_map, pAddr, MemElem); |
1502 | break; | |
1503 | case AccessLength_SEXTIBYTE : | |
01737f42 | 1504 | sim_core_write_misaligned_6 (cpu, NULL_CIA, |
63be8feb AC |
1505 | sim_core_write_map, pAddr, MemElem); |
1506 | break; | |
1507 | case AccessLength_QUINTIBYTE : | |
01737f42 | 1508 | sim_core_write_misaligned_5 (cpu, NULL_CIA, |
63be8feb AC |
1509 | sim_core_write_map, pAddr, MemElem); |
1510 | break; | |
1511 | case AccessLength_WORD : | |
01737f42 | 1512 | sim_core_write_aligned_4 (cpu, NULL_CIA, |
63be8feb AC |
1513 | sim_core_write_map, pAddr, MemElem); |
1514 | break; | |
1515 | case AccessLength_TRIPLEBYTE : | |
01737f42 | 1516 | sim_core_write_misaligned_3 (cpu, NULL_CIA, |
63be8feb AC |
1517 | sim_core_write_map, pAddr, MemElem); |
1518 | break; | |
1519 | case AccessLength_HALFWORD : | |
01737f42 | 1520 | sim_core_write_aligned_2 (cpu, NULL_CIA, |
63be8feb AC |
1521 | sim_core_write_map, pAddr, MemElem); |
1522 | break; | |
1523 | case AccessLength_BYTE : | |
01737f42 | 1524 | sim_core_write_aligned_1 (cpu, NULL_CIA, |
63be8feb AC |
1525 | sim_core_write_map, pAddr, MemElem); |
1526 | break; | |
1527 | default: | |
1528 | abort (); | |
1529 | } | |
1530 | ||
8bae0a0c JSC |
1531 | return; |
1532 | } | |
1533 | ||
53b9417e | 1534 | |
dad6f1f3 | 1535 | unsigned32 |
7ce8b917 | 1536 | ifetch32 (SIM_DESC sd, |
01737f42 | 1537 | sim_cpu *cpu, |
7ce8b917 AC |
1538 | address_word cia, |
1539 | address_word vaddr) | |
dad6f1f3 AC |
1540 | { |
1541 | /* Copy the action of the LW instruction */ | |
1542 | address_word reverse = (ReverseEndian ? (LOADDRMASK >> 2) : 0); | |
1543 | address_word bigend = (BigEndianCPU ? (LOADDRMASK >> 2) : 0); | |
1544 | unsigned64 value; | |
1545 | address_word paddr; | |
1546 | unsigned32 instruction; | |
1547 | unsigned byte; | |
1548 | int cca; | |
1549 | AddressTranslation (vaddr, isINSTRUCTION, isLOAD, &paddr, &cca, isTARGET, isREAL); | |
1550 | paddr = ((paddr & ~LOADDRMASK) | ((paddr & LOADDRMASK) ^ (reverse << 2))); | |
1551 | LoadMemory (&value, NULL, cca, AccessLength_WORD, paddr, vaddr, isINSTRUCTION, isREAL); | |
1552 | byte = ((vaddr & LOADDRMASK) ^ (bigend << 2)); | |
1553 | instruction = ((value >> (8 * byte)) & 0xFFFFFFFF); | |
1554 | return instruction; | |
1555 | } | |
1556 | ||
1557 | ||
8bae0a0c JSC |
1558 | /* Description from page A-26 of the "MIPS IV Instruction Set" manual (revision 3.1) */ |
1559 | /* Order loads and stores to synchronise shared memory. Perform the | |
1560 | action necessary to make the effects of groups of synchronizable | |
1561 | loads and stores indicated by stype occur in the same order for all | |
1562 | processors. */ | |
ea985d24 | 1563 | void |
01737f42 AC |
1564 | sync_operation (SIM_DESC sd, |
1565 | sim_cpu *cpu, | |
1566 | address_word cia, | |
1567 | int stype) | |
8bae0a0c JSC |
1568 | { |
1569 | #ifdef DEBUG | |
18c64df6 | 1570 | sim_io_printf(sd,"SyncOperation(%d) : TODO\n",stype); |
8bae0a0c JSC |
1571 | #endif /* DEBUG */ |
1572 | return; | |
1573 | } | |
1574 | ||
1575 | /* Description from page A-26 of the "MIPS IV Instruction Set" manual (revision 3.1) */ | |
1576 | /* Signal an exception condition. This will result in an exception | |
1577 | that aborts the instruction. The instruction operation pseudocode | |
50a2a691 | 1578 | will never see a return from this function call. */ |
2e61a3ad | 1579 | |
18c64df6 | 1580 | void |
7ce8b917 | 1581 | signal_exception (SIM_DESC sd, |
01737f42 | 1582 | sim_cpu *cpu, |
7ce8b917 AC |
1583 | address_word cia, |
1584 | int exception,...) | |
8bae0a0c | 1585 | { |
56e7c849 | 1586 | int vector; |
6eedf3f4 MA |
1587 | |
1588 | #ifdef DEBUG | |
95469ceb | 1589 | sim_io_printf(sd,"DBG: SignalException(%d) PC = 0x%s\n",exception,pr_addr(cia)); |
6eedf3f4 MA |
1590 | #endif /* DEBUG */ |
1591 | ||
8bae0a0c JSC |
1592 | /* Ensure that any active atomic read/modify/write operation will fail: */ |
1593 | LLBIT = 0; | |
1594 | ||
1595 | switch (exception) { | |
1596 | /* TODO: For testing purposes I have been ignoring TRAPs. In | |
1597 | reality we should either simulate them, or allow the user to | |
6eedf3f4 MA |
1598 | ignore them at run-time. |
1599 | Same for SYSCALL */ | |
8bae0a0c | 1600 | case Trap : |
95469ceb | 1601 | sim_io_eprintf(sd,"Ignoring instruction TRAP (PC 0x%s)\n",pr_addr(cia)); |
8bae0a0c JSC |
1602 | break; |
1603 | ||
6eedf3f4 MA |
1604 | case SystemCall : |
1605 | { | |
1606 | va_list ap; | |
1607 | unsigned int instruction; | |
1608 | unsigned int code; | |
1609 | ||
1610 | va_start(ap,exception); | |
1611 | instruction = va_arg(ap,unsigned int); | |
1612 | va_end(ap); | |
1613 | ||
1614 | code = (instruction >> 6) & 0xFFFFF; | |
1615 | ||
18c64df6 | 1616 | sim_io_eprintf(sd,"Ignoring instruction `syscall %d' (PC 0x%s)\n", |
95469ceb | 1617 | code, pr_addr(cia)); |
6eedf3f4 MA |
1618 | } |
1619 | break; | |
1620 | ||
1621 | case DebugBreakPoint : | |
1622 | if (! (Debug & Debug_DM)) | |
1623 | { | |
1624 | if (INDELAYSLOT()) | |
1625 | { | |
1626 | CANCELDELAYSLOT(); | |
1627 | ||
1628 | Debug |= Debug_DBD; /* signaled from within in delay slot */ | |
95469ceb | 1629 | DEPC = cia - 4; /* reference the branch instruction */ |
6eedf3f4 MA |
1630 | } |
1631 | else | |
1632 | { | |
1633 | Debug &= ~Debug_DBD; /* not signaled from within a delay slot */ | |
95469ceb | 1634 | DEPC = cia; |
6eedf3f4 MA |
1635 | } |
1636 | ||
1637 | Debug |= Debug_DM; /* in debugging mode */ | |
1638 | Debug |= Debug_DBp; /* raising a DBp exception */ | |
1639 | PC = 0xBFC00200; | |
01737f42 | 1640 | sim_engine_restart (SD, CPU, NULL, NULL_CIA); |
6eedf3f4 MA |
1641 | } |
1642 | break; | |
1643 | ||
8bae0a0c JSC |
1644 | case ReservedInstruction : |
1645 | { | |
1646 | va_list ap; | |
1647 | unsigned int instruction; | |
1648 | va_start(ap,exception); | |
1649 | instruction = va_arg(ap,unsigned int); | |
1650 | va_end(ap); | |
1651 | /* Provide simple monitor support using ReservedInstruction | |
1652 | exceptions. The following code simulates the fixed vector | |
1653 | entry points into the IDT monitor by causing a simulator | |
1654 | trap, performing the monitor operation, and returning to | |
1655 | the address held in the $ra register (standard PCS return | |
1656 | address). This means we only need to pre-load the vector | |
1657 | space with suitable instruction values. For systems were | |
1658 | actual trap instructions are used, we would not need to | |
1659 | perform this magic. */ | |
7ce8b917 AC |
1660 | if ((instruction & RSVD_INSTRUCTION_MASK) == RSVD_INSTRUCTION) |
1661 | { | |
01737f42 | 1662 | sim_monitor (SD, CPU, cia, ((instruction >> RSVD_INSTRUCTION_ARG_SHIFT) & RSVD_INSTRUCTION_ARG_MASK) ); |
7ce8b917 AC |
1663 | /* NOTE: This assumes that a branch-and-link style |
1664 | instruction was used to enter the vector (which is the | |
1665 | case with the current IDT monitor). */ | |
01737f42 | 1666 | sim_engine_restart (SD, CPU, NULL, RA); |
7ce8b917 | 1667 | } |
7e6c297e ILT |
1668 | /* Look for the mips16 entry and exit instructions, and |
1669 | simulate a handler for them. */ | |
95469ceb | 1670 | else if ((cia & 1) != 0 |
7e6c297e | 1671 | && (instruction & 0xf81f) == 0xe809 |
7ce8b917 AC |
1672 | && (instruction & 0x0c0) != 0x0c0) |
1673 | { | |
01737f42 | 1674 | mips16_entry (SD, CPU, cia, instruction); |
7ce8b917 AC |
1675 | sim_engine_restart (sd, NULL, NULL, NULL_CIA); |
1676 | } | |
1677 | /* else fall through to normal exception processing */ | |
95469ceb | 1678 | sim_io_eprintf(sd,"ReservedInstruction 0x%08X at PC = 0x%s\n",instruction,pr_addr(cia)); |
8bae0a0c JSC |
1679 | } |
1680 | ||
05d1322f | 1681 | case BreakPoint: |
e3d12c65 | 1682 | #ifdef DEBUG |
95469ceb | 1683 | sim_io_printf(sd,"DBG: SignalException(%d) PC = 0x%s\n",exception,pr_addr(cia)); |
8bae0a0c | 1684 | #endif /* DEBUG */ |
05d1322f JL |
1685 | /* Keep a copy of the current A0 in-case this is the program exit |
1686 | breakpoint: */ | |
1687 | { | |
1688 | va_list ap; | |
1689 | unsigned int instruction; | |
1690 | va_start(ap,exception); | |
1691 | instruction = va_arg(ap,unsigned int); | |
1692 | va_end(ap); | |
1693 | /* Check for our special terminating BREAK: */ | |
1694 | if ((instruction & 0x03FFFFC0) == 0x03ff0000) { | |
01737f42 | 1695 | sim_engine_halt (SD, CPU, NULL, cia, |
05d1322f JL |
1696 | sim_exited, (unsigned int)(A0 & 0xFFFFFFFF)); |
1697 | } | |
1698 | } | |
0c2c5f61 | 1699 | if (STATE & simDELAYSLOT) |
95469ceb | 1700 | PC = cia - 4; /* reference the branch instruction */ |
05d1322f | 1701 | else |
95469ceb | 1702 | PC = cia; |
01737f42 | 1703 | sim_engine_halt (SD, CPU, NULL, cia, |
232156de | 1704 | sim_stopped, SIM_SIGTRAP); |
05d1322f JL |
1705 | |
1706 | default: | |
8bae0a0c JSC |
1707 | /* Store exception code into current exception id variable (used |
1708 | by exit code): */ | |
1709 | ||
1710 | /* TODO: If not simulating exceptions then stop the simulator | |
1711 | execution. At the moment we always stop the simulation. */ | |
e3d12c65 | 1712 | |
56e7c849 AC |
1713 | /* See figure 5-17 for an outline of the code below */ |
1714 | if (! (SR & status_EXL)) | |
1715 | { | |
1716 | CAUSE = (exception << 2); | |
0c2c5f61 | 1717 | if (STATE & simDELAYSLOT) |
56e7c849 | 1718 | { |
0c2c5f61 | 1719 | STATE &= ~simDELAYSLOT; |
56e7c849 | 1720 | CAUSE |= cause_BD; |
95469ceb | 1721 | EPC = (cia - 4); /* reference the branch instruction */ |
56e7c849 AC |
1722 | } |
1723 | else | |
95469ceb | 1724 | EPC = cia; |
56e7c849 AC |
1725 | /* FIXME: TLB et.al. */ |
1726 | vector = 0x180; | |
1727 | } | |
1728 | else | |
1729 | { | |
05d1322f | 1730 | CAUSE = (exception << 2); |
56e7c849 AC |
1731 | vector = 0x180; |
1732 | } | |
1733 | SR |= status_EXL; | |
e3d12c65 DE |
1734 | /* Store exception code into current exception id variable (used |
1735 | by exit code): */ | |
56e7c849 AC |
1736 | if (SR & status_BEV) |
1737 | PC = (signed)0xBFC00200 + 0x180; | |
1738 | else | |
1739 | PC = (signed)0x80000000 + 0x180; | |
1740 | ||
50a2a691 AC |
1741 | switch ((CAUSE >> 2) & 0x1F) |
1742 | { | |
1743 | case Interrupt: | |
56e7c849 AC |
1744 | /* Interrupts arrive during event processing, no need to |
1745 | restart */ | |
1746 | return; | |
50a2a691 AC |
1747 | |
1748 | case TLBModification: | |
1749 | case TLBLoad: | |
1750 | case TLBStore: | |
1751 | case AddressLoad: | |
1752 | case AddressStore: | |
1753 | case InstructionFetch: | |
1754 | case DataReference: | |
56e7c849 AC |
1755 | /* The following is so that the simulator will continue from the |
1756 | exception address on breakpoint operations. */ | |
1757 | PC = EPC; | |
01737f42 | 1758 | sim_engine_halt (SD, CPU, NULL, NULL_CIA, |
232156de | 1759 | sim_stopped, SIM_SIGBUS); |
50a2a691 AC |
1760 | |
1761 | case ReservedInstruction: | |
1762 | case CoProcessorUnusable: | |
56e7c849 | 1763 | PC = EPC; |
01737f42 | 1764 | sim_engine_halt (SD, CPU, NULL, NULL_CIA, |
232156de | 1765 | sim_stopped, SIM_SIGILL); |
50a2a691 AC |
1766 | |
1767 | case IntegerOverflow: | |
1768 | case FPE: | |
01737f42 | 1769 | sim_engine_halt (SD, CPU, NULL, NULL_CIA, |
232156de | 1770 | sim_stopped, SIM_SIGFPE); |
50a2a691 AC |
1771 | |
1772 | case Trap: | |
1773 | case Watch: | |
1774 | case SystemCall: | |
56e7c849 | 1775 | PC = EPC; |
01737f42 | 1776 | sim_engine_halt (SD, CPU, NULL, NULL_CIA, |
232156de | 1777 | sim_stopped, SIM_SIGTRAP); |
50a2a691 | 1778 | |
05d1322f JL |
1779 | case BreakPoint: |
1780 | PC = EPC; | |
01737f42 | 1781 | sim_engine_abort (SD, CPU, NULL_CIA, |
05d1322f JL |
1782 | "FATAL: Should not encounter a breakpoint\n"); |
1783 | ||
50a2a691 | 1784 | default : /* Unknown internal exception */ |
56e7c849 | 1785 | PC = EPC; |
01737f42 | 1786 | sim_engine_halt (SD, CPU, NULL, NULL_CIA, |
232156de | 1787 | sim_stopped, SIM_SIGABRT); |
50a2a691 AC |
1788 | |
1789 | } | |
8bae0a0c JSC |
1790 | |
1791 | case SimulatorFault: | |
1792 | { | |
1793 | va_list ap; | |
1794 | char *msg; | |
1795 | va_start(ap,exception); | |
1796 | msg = va_arg(ap,char *); | |
50a2a691 | 1797 | va_end(ap); |
01737f42 | 1798 | sim_engine_abort (SD, CPU, NULL_CIA, |
2e61a3ad | 1799 | "FATAL: Simulator error \"%s\"\n",msg); |
8bae0a0c | 1800 | } |
8bae0a0c JSC |
1801 | } |
1802 | ||
1803 | return; | |
1804 | } | |
1805 | ||
1806 | #if defined(WARN_RESULT) | |
1807 | /* Description from page A-26 of the "MIPS IV Instruction Set" manual (revision 3.1) */ | |
1808 | /* This function indicates that the result of the operation is | |
1809 | undefined. However, this should not affect the instruction | |
1810 | stream. All that is meant to happen is that the destination | |
1811 | register is set to an undefined result. To keep the simulator | |
1812 | simple, we just don't bother updating the destination register, so | |
1813 | the overall result will be undefined. If desired we can stop the | |
1814 | simulator by raising a pseudo-exception. */ | |
95469ceb | 1815 | #define UndefinedResult() undefined_result (sd,cia) |
8bae0a0c | 1816 | static void |
95469ceb AC |
1817 | undefined_result(sd,cia) |
1818 | SIM_DESC sd; | |
1819 | address_word cia; | |
8bae0a0c | 1820 | { |
95469ceb | 1821 | sim_io_eprintf(sd,"UndefinedResult: PC = 0x%s\n",pr_addr(cia)); |
8bae0a0c JSC |
1822 | #if 0 /* Disabled for the moment, since it actually happens a lot at the moment. */ |
1823 | state |= simSTOP; | |
1824 | #endif | |
1825 | return; | |
1826 | } | |
1827 | #endif /* WARN_RESULT */ | |
1828 | ||
18c64df6 | 1829 | void |
01737f42 AC |
1830 | cache_op (SIM_DESC sd, |
1831 | sim_cpu *cpu, | |
1832 | address_word cia, | |
1833 | int op, | |
1834 | address_word pAddr, | |
1835 | address_word vAddr, | |
1836 | unsigned int instruction) | |
8bae0a0c | 1837 | { |
f24b7b69 JSC |
1838 | #if 1 /* stop warning message being displayed (we should really just remove the code) */ |
1839 | static int icache_warning = 1; | |
1840 | static int dcache_warning = 1; | |
1841 | #else | |
a9f7253f JSC |
1842 | static int icache_warning = 0; |
1843 | static int dcache_warning = 0; | |
f24b7b69 | 1844 | #endif |
a9f7253f | 1845 | |
8bae0a0c JSC |
1846 | /* If CP0 is not useable (User or Supervisor mode) and the CP0 |
1847 | enable bit in the Status Register is clear - a coprocessor | |
1848 | unusable exception is taken. */ | |
a9f7253f | 1849 | #if 0 |
95469ceb | 1850 | sim_io_printf(sd,"TODO: Cache availability checking (PC = 0x%s)\n",pr_addr(cia)); |
a9f7253f | 1851 | #endif |
8bae0a0c JSC |
1852 | |
1853 | switch (op & 0x3) { | |
1854 | case 0: /* instruction cache */ | |
1855 | switch (op >> 2) { | |
1856 | case 0: /* Index Invalidate */ | |
1857 | case 1: /* Index Load Tag */ | |
1858 | case 2: /* Index Store Tag */ | |
1859 | case 4: /* Hit Invalidate */ | |
1860 | case 5: /* Fill */ | |
1861 | case 6: /* Hit Writeback */ | |
a9f7253f JSC |
1862 | if (!icache_warning) |
1863 | { | |
18c64df6 | 1864 | sim_io_eprintf(sd,"Instruction CACHE operation %d to be coded\n",(op >> 2)); |
a9f7253f JSC |
1865 | icache_warning = 1; |
1866 | } | |
8bae0a0c JSC |
1867 | break; |
1868 | ||
1869 | default: | |
1870 | SignalException(ReservedInstruction,instruction); | |
1871 | break; | |
1872 | } | |
1873 | break; | |
1874 | ||
1875 | case 1: /* data cache */ | |
1876 | switch (op >> 2) { | |
1877 | case 0: /* Index Writeback Invalidate */ | |
1878 | case 1: /* Index Load Tag */ | |
1879 | case 2: /* Index Store Tag */ | |
1880 | case 3: /* Create Dirty */ | |
1881 | case 4: /* Hit Invalidate */ | |
1882 | case 5: /* Hit Writeback Invalidate */ | |
1883 | case 6: /* Hit Writeback */ | |
a9f7253f JSC |
1884 | if (!dcache_warning) |
1885 | { | |
18c64df6 | 1886 | sim_io_eprintf(sd,"Data CACHE operation %d to be coded\n",(op >> 2)); |
a9f7253f JSC |
1887 | dcache_warning = 1; |
1888 | } | |
8bae0a0c JSC |
1889 | break; |
1890 | ||
1891 | default: | |
1892 | SignalException(ReservedInstruction,instruction); | |
1893 | break; | |
1894 | } | |
1895 | break; | |
1896 | ||
1897 | default: /* unrecognised cache ID */ | |
1898 | SignalException(ReservedInstruction,instruction); | |
1899 | break; | |
1900 | } | |
1901 | ||
1902 | return; | |
1903 | } | |
1904 | ||
1905 | /*-- FPU support routines ---------------------------------------------------*/ | |
1906 | ||
8bae0a0c JSC |
1907 | /* Numbers are held in normalized form. The SINGLE and DOUBLE binary |
1908 | formats conform to ANSI/IEEE Std 754-1985. */ | |
1909 | /* SINGLE precision floating: | |
1910 | * seeeeeeeefffffffffffffffffffffff | |
1911 | * s = 1bit = sign | |
1912 | * e = 8bits = exponent | |
1913 | * f = 23bits = fraction | |
1914 | */ | |
1915 | /* SINGLE precision fixed: | |
1916 | * siiiiiiiiiiiiiiiiiiiiiiiiiiiiiii | |
1917 | * s = 1bit = sign | |
1918 | * i = 31bits = integer | |
1919 | */ | |
1920 | /* DOUBLE precision floating: | |
1921 | * seeeeeeeeeeeffffffffffffffffffffffffffffffffffffffffffffffffffff | |
1922 | * s = 1bit = sign | |
1923 | * e = 11bits = exponent | |
1924 | * f = 52bits = fraction | |
1925 | */ | |
1926 | /* DOUBLE precision fixed: | |
1927 | * siiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii | |
1928 | * s = 1bit = sign | |
1929 | * i = 63bits = integer | |
1930 | */ | |
1931 | ||
1932 | /* Extract sign-bit: */ | |
1933 | #define FP_S_s(v) (((v) & ((unsigned)1 << 31)) ? 1 : 0) | |
e871dd18 | 1934 | #define FP_D_s(v) (((v) & ((uword64)1 << 63)) ? 1 : 0) |
8bae0a0c JSC |
1935 | /* Extract biased exponent: */ |
1936 | #define FP_S_be(v) (((v) >> 23) & 0xFF) | |
1937 | #define FP_D_be(v) (((v) >> 52) & 0x7FF) | |
1938 | /* Extract unbiased Exponent: */ | |
1939 | #define FP_S_e(v) (FP_S_be(v) - 0x7F) | |
1940 | #define FP_D_e(v) (FP_D_be(v) - 0x3FF) | |
1941 | /* Extract complete fraction field: */ | |
1942 | #define FP_S_f(v) ((v) & ~((unsigned)0x1FF << 23)) | |
e871dd18 | 1943 | #define FP_D_f(v) ((v) & ~((uword64)0xFFF << 52)) |
8bae0a0c JSC |
1944 | /* Extract numbered fraction bit: */ |
1945 | #define FP_S_fb(b,v) (((v) & (1 << (23 - (b)))) ? 1 : 0) | |
1946 | #define FP_D_fb(b,v) (((v) & (1 << (52 - (b)))) ? 1 : 0) | |
1947 | ||
1948 | /* Explicit QNaN values used when value required: */ | |
1949 | #define FPQNaN_SINGLE (0x7FBFFFFF) | |
1950 | #define FPQNaN_WORD (0x7FFFFFFF) | |
e871dd18 JSC |
1951 | #define FPQNaN_DOUBLE (((uword64)0x7FF7FFFF << 32) | 0xFFFFFFFF) |
1952 | #define FPQNaN_LONG (((uword64)0x7FFFFFFF << 32) | 0xFFFFFFFF) | |
8bae0a0c JSC |
1953 | |
1954 | /* Explicit Infinity values used when required: */ | |
1955 | #define FPINF_SINGLE (0x7F800000) | |
e871dd18 | 1956 | #define FPINF_DOUBLE (((uword64)0x7FF00000 << 32) | 0x00000000) |
8bae0a0c JSC |
1957 | |
1958 | #if 1 /* def DEBUG */ | |
1959 | #define RMMODE(v) (((v) == FP_RM_NEAREST) ? "Round" : (((v) == FP_RM_TOZERO) ? "Trunc" : (((v) == FP_RM_TOPINF) ? "Ceil" : "Floor"))) | |
1960 | #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>")))))) | |
1961 | #endif /* DEBUG */ | |
1962 | ||
18c64df6 | 1963 | uword64 |
01737f42 AC |
1964 | value_fpr (SIM_DESC sd, |
1965 | sim_cpu *cpu, | |
1966 | address_word cia, | |
1967 | int fpr, | |
1968 | FP_formats fmt) | |
8bae0a0c | 1969 | { |
50a2a691 | 1970 | uword64 value = 0; |
8bae0a0c JSC |
1971 | int err = 0; |
1972 | ||
1973 | /* Treat unused register values, as fixed-point 64bit values: */ | |
1974 | if ((fmt == fmt_uninterpreted) || (fmt == fmt_unknown)) | |
1975 | #if 1 | |
1976 | /* If request to read data as "uninterpreted", then use the current | |
1977 | encoding: */ | |
0c2c5f61 | 1978 | fmt = FPR_STATE[fpr]; |
8bae0a0c JSC |
1979 | #else |
1980 | fmt = fmt_long; | |
1981 | #endif | |
1982 | ||
1983 | /* For values not yet accessed, set to the desired format: */ | |
0c2c5f61 AC |
1984 | if (FPR_STATE[fpr] == fmt_uninterpreted) { |
1985 | FPR_STATE[fpr] = fmt; | |
8bae0a0c JSC |
1986 | #ifdef DEBUG |
1987 | printf("DBG: Register %d was fmt_uninterpreted. Now %s\n",fpr,DOFMT(fmt)); | |
1988 | #endif /* DEBUG */ | |
1989 | } | |
0c2c5f61 | 1990 | if (fmt != FPR_STATE[fpr]) { |
95469ceb | 1991 | 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 | 1992 | FPR_STATE[fpr] = fmt_unknown; |
8bae0a0c JSC |
1993 | } |
1994 | ||
0c2c5f61 | 1995 | if (FPR_STATE[fpr] == fmt_unknown) { |
8bae0a0c JSC |
1996 | /* Set QNaN value: */ |
1997 | switch (fmt) { | |
1998 | case fmt_single: | |
1999 | value = FPQNaN_SINGLE; | |
2000 | break; | |
2001 | ||
2002 | case fmt_double: | |
2003 | value = FPQNaN_DOUBLE; | |
2004 | break; | |
2005 | ||
2006 | case fmt_word: | |
2007 | value = FPQNaN_WORD; | |
2008 | break; | |
2009 | ||
2010 | case fmt_long: | |
2011 | value = FPQNaN_LONG; | |
2012 | break; | |
2013 | ||
2014 | default: | |
2015 | err = -1; | |
2016 | break; | |
2017 | } | |
2018 | } else if (SizeFGR() == 64) { | |
2019 | switch (fmt) { | |
2020 | case fmt_single: | |
2021 | case fmt_word: | |
2022 | value = (FGR[fpr] & 0xFFFFFFFF); | |
2023 | break; | |
2024 | ||
2025 | case fmt_uninterpreted: | |
2026 | case fmt_double: | |
2027 | case fmt_long: | |
2028 | value = FGR[fpr]; | |
2029 | break; | |
2030 | ||
2031 | default : | |
2032 | err = -1; | |
2033 | break; | |
2034 | } | |
da0bce9c | 2035 | } else { |
8bae0a0c JSC |
2036 | switch (fmt) { |
2037 | case fmt_single: | |
2038 | case fmt_word: | |
2039 | value = (FGR[fpr] & 0xFFFFFFFF); | |
2040 | break; | |
2041 | ||
2042 | case fmt_uninterpreted: | |
2043 | case fmt_double: | |
2044 | case fmt_long: | |
da0bce9c ILT |
2045 | if ((fpr & 1) == 0) { /* even registers only */ |
2046 | value = ((((uword64)FGR[fpr+1]) << 32) | (FGR[fpr] & 0xFFFFFFFF)); | |
2047 | } else { | |
18c64df6 | 2048 | SignalException(ReservedInstruction,0); |
da0bce9c | 2049 | } |
8bae0a0c JSC |
2050 | break; |
2051 | ||
2052 | default : | |
2053 | err = -1; | |
2054 | break; | |
2055 | } | |
2056 | } | |
2057 | ||
2058 | if (err) | |
18c64df6 | 2059 | SignalExceptionSimulatorFault ("Unrecognised FP format in ValueFPR()"); |
8bae0a0c JSC |
2060 | |
2061 | #ifdef DEBUG | |
95469ceb | 2062 | 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 |
2063 | #endif /* DEBUG */ |
2064 | ||
2065 | return(value); | |
2066 | } | |
2067 | ||
18c64df6 | 2068 | void |
01737f42 AC |
2069 | store_fpr (SIM_DESC sd, |
2070 | sim_cpu *cpu, | |
2071 | address_word cia, | |
2072 | int fpr, | |
2073 | FP_formats fmt, | |
2074 | uword64 value) | |
8bae0a0c JSC |
2075 | { |
2076 | int err = 0; | |
2077 | ||
2078 | #ifdef DEBUG | |
95469ceb | 2079 | 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 |
2080 | #endif /* DEBUG */ |
2081 | ||
2082 | if (SizeFGR() == 64) { | |
2083 | switch (fmt) { | |
a09a30d2 AC |
2084 | case fmt_uninterpreted_32: |
2085 | fmt = fmt_uninterpreted; | |
8bae0a0c JSC |
2086 | case fmt_single : |
2087 | case fmt_word : | |
e871dd18 | 2088 | FGR[fpr] = (((uword64)0xDEADC0DE << 32) | (value & 0xFFFFFFFF)); |
0c2c5f61 | 2089 | FPR_STATE[fpr] = fmt; |
8bae0a0c JSC |
2090 | break; |
2091 | ||
a09a30d2 AC |
2092 | case fmt_uninterpreted_64: |
2093 | fmt = fmt_uninterpreted; | |
8bae0a0c JSC |
2094 | case fmt_uninterpreted: |
2095 | case fmt_double : | |
2096 | case fmt_long : | |
2097 | FGR[fpr] = value; | |
0c2c5f61 | 2098 | FPR_STATE[fpr] = fmt; |
8bae0a0c JSC |
2099 | break; |
2100 | ||
2101 | default : | |
0c2c5f61 | 2102 | FPR_STATE[fpr] = fmt_unknown; |
8bae0a0c JSC |
2103 | err = -1; |
2104 | break; | |
2105 | } | |
da0bce9c | 2106 | } else { |
8bae0a0c | 2107 | switch (fmt) { |
a09a30d2 AC |
2108 | case fmt_uninterpreted_32: |
2109 | fmt = fmt_uninterpreted; | |
8bae0a0c JSC |
2110 | case fmt_single : |
2111 | case fmt_word : | |
8bae0a0c | 2112 | FGR[fpr] = (value & 0xFFFFFFFF); |
0c2c5f61 | 2113 | FPR_STATE[fpr] = fmt; |
8bae0a0c JSC |
2114 | break; |
2115 | ||
a09a30d2 AC |
2116 | case fmt_uninterpreted_64: |
2117 | fmt = fmt_uninterpreted; | |
8bae0a0c JSC |
2118 | case fmt_uninterpreted: |
2119 | case fmt_double : | |
2120 | case fmt_long : | |
da0bce9c ILT |
2121 | if ((fpr & 1) == 0) { /* even register number only */ |
2122 | FGR[fpr+1] = (value >> 32); | |
2123 | FGR[fpr] = (value & 0xFFFFFFFF); | |
0c2c5f61 AC |
2124 | FPR_STATE[fpr + 1] = fmt; |
2125 | FPR_STATE[fpr] = fmt; | |
da0bce9c | 2126 | } else { |
0c2c5f61 AC |
2127 | FPR_STATE[fpr] = fmt_unknown; |
2128 | FPR_STATE[fpr + 1] = fmt_unknown; | |
18c64df6 | 2129 | SignalException(ReservedInstruction,0); |
da0bce9c | 2130 | } |
8bae0a0c JSC |
2131 | break; |
2132 | ||
2133 | default : | |
0c2c5f61 | 2134 | FPR_STATE[fpr] = fmt_unknown; |
8bae0a0c JSC |
2135 | err = -1; |
2136 | break; | |
2137 | } | |
e871dd18 JSC |
2138 | } |
2139 | #if defined(WARN_RESULT) | |
2140 | else | |
2141 | UndefinedResult(); | |
2142 | #endif /* WARN_RESULT */ | |
8bae0a0c JSC |
2143 | |
2144 | if (err) | |
18c64df6 | 2145 | SignalExceptionSimulatorFault ("Unrecognised FP format in StoreFPR()"); |
8bae0a0c JSC |
2146 | |
2147 | #ifdef DEBUG | |
53b9417e | 2148 | printf("DBG: StoreFPR: fpr[%d] = 0x%s (format %s)\n",fpr,pr_addr(FGR[fpr]),DOFMT(fmt)); |
8bae0a0c JSC |
2149 | #endif /* DEBUG */ |
2150 | ||
2151 | return; | |
2152 | } | |
2153 | ||
18c64df6 | 2154 | int |
8bae0a0c | 2155 | NaN(op,fmt) |
e871dd18 | 2156 | uword64 op; |
8bae0a0c JSC |
2157 | FP_formats fmt; |
2158 | { | |
2159 | int boolean = 0; | |
8bae0a0c JSC |
2160 | switch (fmt) { |
2161 | case fmt_single: | |
8bae0a0c | 2162 | case fmt_word: |
76ef4165 FL |
2163 | { |
2164 | sim_fpu wop; | |
2165 | sim_fpu_32to (&wop, op); | |
2166 | boolean = sim_fpu_is_nan (&wop); | |
2167 | break; | |
2168 | } | |
2169 | case fmt_double: | |
8bae0a0c | 2170 | case fmt_long: |
76ef4165 FL |
2171 | { |
2172 | sim_fpu wop; | |
2173 | sim_fpu_64to (&wop, op); | |
2174 | boolean = sim_fpu_is_nan (&wop); | |
2175 | break; | |
2176 | } | |
50a2a691 AC |
2177 | default: |
2178 | fprintf (stderr, "Bad switch\n"); | |
2179 | abort (); | |
8bae0a0c JSC |
2180 | } |
2181 | ||
2182 | #ifdef DEBUG | |
53b9417e | 2183 | printf("DBG: NaN: returning %d for 0x%s (format = %s)\n",boolean,pr_addr(op),DOFMT(fmt)); |
8bae0a0c JSC |
2184 | #endif /* DEBUG */ |
2185 | ||
2186 | return(boolean); | |
2187 | } | |
2188 | ||
18c64df6 | 2189 | int |
8bae0a0c | 2190 | Infinity(op,fmt) |
e871dd18 | 2191 | uword64 op; |
8bae0a0c JSC |
2192 | FP_formats fmt; |
2193 | { | |
2194 | int boolean = 0; | |
2195 | ||
2196 | #ifdef DEBUG | |
95469ceb | 2197 | printf("DBG: Infinity: format %s 0x%s\n",DOFMT(fmt),pr_addr(op)); |
8bae0a0c JSC |
2198 | #endif /* DEBUG */ |
2199 | ||
8bae0a0c JSC |
2200 | switch (fmt) { |
2201 | case fmt_single: | |
76ef4165 FL |
2202 | { |
2203 | sim_fpu wop; | |
2204 | sim_fpu_32to (&wop, op); | |
2205 | boolean = sim_fpu_is_infinity (&wop); | |
2206 | break; | |
2207 | } | |
8bae0a0c | 2208 | case fmt_double: |
76ef4165 FL |
2209 | { |
2210 | sim_fpu wop; | |
2211 | sim_fpu_64to (&wop, op); | |
2212 | boolean = sim_fpu_is_infinity (&wop); | |
2213 | break; | |
2214 | } | |
8bae0a0c JSC |
2215 | default: |
2216 | printf("DBG: TODO: unrecognised format (%s) for Infinity check\n",DOFMT(fmt)); | |
2217 | break; | |
2218 | } | |
2219 | ||
2220 | #ifdef DEBUG | |
53b9417e | 2221 | printf("DBG: Infinity: returning %d for 0x%s (format = %s)\n",boolean,pr_addr(op),DOFMT(fmt)); |
8bae0a0c JSC |
2222 | #endif /* DEBUG */ |
2223 | ||
2224 | return(boolean); | |
2225 | } | |
2226 | ||
18c64df6 | 2227 | int |
8bae0a0c | 2228 | Less(op1,op2,fmt) |
e871dd18 JSC |
2229 | uword64 op1; |
2230 | uword64 op2; | |
8bae0a0c JSC |
2231 | FP_formats fmt; |
2232 | { | |
2233 | int boolean = 0; | |
2234 | ||
e871dd18 JSC |
2235 | /* Argument checking already performed by the FPCOMPARE code */ |
2236 | ||
8bae0a0c | 2237 | #ifdef DEBUG |
53b9417e | 2238 | printf("DBG: Less: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); |
8bae0a0c JSC |
2239 | #endif /* DEBUG */ |
2240 | ||
8bae0a0c JSC |
2241 | /* The format type should already have been checked: */ |
2242 | switch (fmt) { | |
2243 | case fmt_single: | |
2244 | { | |
76ef4165 FL |
2245 | sim_fpu wop1; |
2246 | sim_fpu wop2; | |
2247 | sim_fpu_32to (&wop1, op1); | |
2248 | sim_fpu_32to (&wop2, op2); | |
2249 | boolean = sim_fpu_is_lt (&wop1, &wop2); | |
2250 | break; | |
8bae0a0c | 2251 | } |
8bae0a0c | 2252 | case fmt_double: |
76ef4165 FL |
2253 | { |
2254 | sim_fpu wop1; | |
2255 | sim_fpu wop2; | |
2256 | sim_fpu_64to (&wop1, op1); | |
2257 | sim_fpu_64to (&wop2, op2); | |
2258 | boolean = sim_fpu_is_lt (&wop1, &wop2); | |
2259 | break; | |
2260 | } | |
50a2a691 AC |
2261 | default: |
2262 | fprintf (stderr, "Bad switch\n"); | |
2263 | abort (); | |
8bae0a0c JSC |
2264 | } |
2265 | ||
2266 | #ifdef DEBUG | |
2267 | printf("DBG: Less: returning %d (format = %s)\n",boolean,DOFMT(fmt)); | |
2268 | #endif /* DEBUG */ | |
2269 | ||
2270 | return(boolean); | |
2271 | } | |
2272 | ||
18c64df6 | 2273 | int |
8bae0a0c | 2274 | Equal(op1,op2,fmt) |
e871dd18 JSC |
2275 | uword64 op1; |
2276 | uword64 op2; | |
8bae0a0c JSC |
2277 | FP_formats fmt; |
2278 | { | |
2279 | int boolean = 0; | |
2280 | ||
e871dd18 JSC |
2281 | /* Argument checking already performed by the FPCOMPARE code */ |
2282 | ||
8bae0a0c | 2283 | #ifdef DEBUG |
53b9417e | 2284 | printf("DBG: Equal: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); |
8bae0a0c JSC |
2285 | #endif /* DEBUG */ |
2286 | ||
8bae0a0c JSC |
2287 | /* The format type should already have been checked: */ |
2288 | switch (fmt) { | |
2289 | case fmt_single: | |
76ef4165 FL |
2290 | { |
2291 | sim_fpu wop1; | |
2292 | sim_fpu wop2; | |
2293 | sim_fpu_32to (&wop1, op1); | |
2294 | sim_fpu_32to (&wop2, op2); | |
2295 | boolean = sim_fpu_is_eq (&wop1, &wop2); | |
2296 | break; | |
2297 | } | |
8bae0a0c | 2298 | case fmt_double: |
76ef4165 FL |
2299 | { |
2300 | sim_fpu wop1; | |
2301 | sim_fpu wop2; | |
2302 | sim_fpu_64to (&wop1, op1); | |
2303 | sim_fpu_64to (&wop2, op2); | |
2304 | boolean = sim_fpu_is_eq (&wop1, &wop2); | |
2305 | break; | |
2306 | } | |
50a2a691 AC |
2307 | default: |
2308 | fprintf (stderr, "Bad switch\n"); | |
2309 | abort (); | |
8bae0a0c JSC |
2310 | } |
2311 | ||
2312 | #ifdef DEBUG | |
2313 | printf("DBG: Equal: returning %d (format = %s)\n",boolean,DOFMT(fmt)); | |
2314 | #endif /* DEBUG */ | |
2315 | ||
2316 | return(boolean); | |
2317 | } | |
2318 | ||
18c64df6 | 2319 | uword64 |
a9f7253f JSC |
2320 | AbsoluteValue(op,fmt) |
2321 | uword64 op; | |
2322 | FP_formats fmt; | |
2323 | { | |
50a2a691 | 2324 | uword64 result = 0; |
a9f7253f JSC |
2325 | |
2326 | #ifdef DEBUG | |
53b9417e | 2327 | printf("DBG: AbsoluteValue: %s: op = 0x%s\n",DOFMT(fmt),pr_addr(op)); |
a9f7253f JSC |
2328 | #endif /* DEBUG */ |
2329 | ||
2330 | /* The format type should already have been checked: */ | |
2331 | switch (fmt) { | |
2332 | case fmt_single: | |
2333 | { | |
76ef4165 FL |
2334 | sim_fpu wop; |
2335 | unsigned32 ans; | |
2336 | sim_fpu_32to (&wop, op); | |
2337 | sim_fpu_abs (&wop, &wop); | |
2338 | sim_fpu_to32 (&ans, &wop); | |
2339 | result = ans; | |
2340 | break; | |
a9f7253f | 2341 | } |
a9f7253f JSC |
2342 | case fmt_double: |
2343 | { | |
76ef4165 FL |
2344 | sim_fpu wop; |
2345 | unsigned64 ans; | |
2346 | sim_fpu_64to (&wop, op); | |
2347 | sim_fpu_abs (&wop, &wop); | |
2348 | sim_fpu_to64 (&ans, &wop); | |
2349 | result = ans; | |
2350 | break; | |
a9f7253f | 2351 | } |
50a2a691 AC |
2352 | default: |
2353 | fprintf (stderr, "Bad switch\n"); | |
2354 | abort (); | |
a9f7253f JSC |
2355 | } |
2356 | ||
2357 | return(result); | |
2358 | } | |
2359 | ||
18c64df6 | 2360 | uword64 |
8bae0a0c | 2361 | Negate(op,fmt) |
e871dd18 | 2362 | uword64 op; |
8bae0a0c JSC |
2363 | FP_formats fmt; |
2364 | { | |
50a2a691 | 2365 | uword64 result = 0; |
8bae0a0c JSC |
2366 | |
2367 | #ifdef DEBUG | |
53b9417e | 2368 | printf("DBG: Negate: %s: op = 0x%s\n",DOFMT(fmt),pr_addr(op)); |
8bae0a0c JSC |
2369 | #endif /* DEBUG */ |
2370 | ||
2371 | /* The format type should already have been checked: */ | |
2372 | switch (fmt) { | |
2373 | case fmt_single: | |
2374 | { | |
76ef4165 FL |
2375 | sim_fpu wop; |
2376 | unsigned32 ans; | |
2377 | sim_fpu_32to (&wop, op); | |
2378 | sim_fpu_neg (&wop, &wop); | |
2379 | sim_fpu_to32 (&ans, &wop); | |
2380 | result = ans; | |
2381 | break; | |
8bae0a0c | 2382 | } |
8bae0a0c JSC |
2383 | case fmt_double: |
2384 | { | |
76ef4165 FL |
2385 | sim_fpu wop; |
2386 | unsigned64 ans; | |
2387 | sim_fpu_64to (&wop, op); | |
2388 | sim_fpu_neg (&wop, &wop); | |
2389 | sim_fpu_to64 (&ans, &wop); | |
2390 | result = ans; | |
2391 | break; | |
8bae0a0c | 2392 | } |
50a2a691 AC |
2393 | default: |
2394 | fprintf (stderr, "Bad switch\n"); | |
2395 | abort (); | |
8bae0a0c JSC |
2396 | } |
2397 | ||
2398 | return(result); | |
2399 | } | |
2400 | ||
18c64df6 | 2401 | uword64 |
8bae0a0c | 2402 | Add(op1,op2,fmt) |
e871dd18 JSC |
2403 | uword64 op1; |
2404 | uword64 op2; | |
8bae0a0c JSC |
2405 | FP_formats fmt; |
2406 | { | |
50a2a691 | 2407 | uword64 result = 0; |
8bae0a0c JSC |
2408 | |
2409 | #ifdef DEBUG | |
53b9417e | 2410 | printf("DBG: Add: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); |
8bae0a0c JSC |
2411 | #endif /* DEBUG */ |
2412 | ||
e871dd18 JSC |
2413 | /* The registers must specify FPRs valid for operands of type |
2414 | "fmt". If they are not valid, the result is undefined. */ | |
8bae0a0c JSC |
2415 | |
2416 | /* The format type should already have been checked: */ | |
2417 | switch (fmt) { | |
2418 | case fmt_single: | |
2419 | { | |
76ef4165 FL |
2420 | sim_fpu wop1; |
2421 | sim_fpu wop2; | |
2422 | sim_fpu ans; | |
2423 | unsigned32 res; | |
2424 | sim_fpu_32to (&wop1, op1); | |
2425 | sim_fpu_32to (&wop2, op2); | |
2426 | sim_fpu_add (&ans, &wop1, &wop2); | |
2427 | sim_fpu_to32 (&res, &ans); | |
2428 | result = res; | |
2429 | break; | |
8bae0a0c | 2430 | } |
8bae0a0c JSC |
2431 | case fmt_double: |
2432 | { | |
76ef4165 FL |
2433 | sim_fpu wop1; |
2434 | sim_fpu wop2; | |
2435 | sim_fpu ans; | |
2436 | unsigned64 res; | |
2437 | sim_fpu_64to (&wop1, op1); | |
2438 | sim_fpu_64to (&wop2, op2); | |
2439 | sim_fpu_add (&ans, &wop1, &wop2); | |
2440 | sim_fpu_to64 (&res, &ans); | |
2441 | result = res; | |
2442 | break; | |
8bae0a0c | 2443 | } |
50a2a691 AC |
2444 | default: |
2445 | fprintf (stderr, "Bad switch\n"); | |
2446 | abort (); | |
8bae0a0c JSC |
2447 | } |
2448 | ||
2449 | #ifdef DEBUG | |
53b9417e | 2450 | printf("DBG: Add: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); |
8bae0a0c JSC |
2451 | #endif /* DEBUG */ |
2452 | ||
2453 | return(result); | |
2454 | } | |
2455 | ||
18c64df6 | 2456 | uword64 |
8bae0a0c | 2457 | Sub(op1,op2,fmt) |
e871dd18 JSC |
2458 | uword64 op1; |
2459 | uword64 op2; | |
8bae0a0c JSC |
2460 | FP_formats fmt; |
2461 | { | |
50a2a691 | 2462 | uword64 result = 0; |
8bae0a0c JSC |
2463 | |
2464 | #ifdef DEBUG | |
53b9417e | 2465 | printf("DBG: Sub: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); |
8bae0a0c JSC |
2466 | #endif /* DEBUG */ |
2467 | ||
e871dd18 JSC |
2468 | /* The registers must specify FPRs valid for operands of type |
2469 | "fmt". If they are not valid, the result is undefined. */ | |
8bae0a0c JSC |
2470 | |
2471 | /* The format type should already have been checked: */ | |
2472 | switch (fmt) { | |
2473 | case fmt_single: | |
2474 | { | |
76ef4165 FL |
2475 | sim_fpu wop1; |
2476 | sim_fpu wop2; | |
2477 | sim_fpu ans; | |
2478 | unsigned32 res; | |
2479 | sim_fpu_32to (&wop1, op1); | |
2480 | sim_fpu_32to (&wop2, op2); | |
2481 | sim_fpu_sub (&ans, &wop1, &wop2); | |
2482 | sim_fpu_to32 (&res, &ans); | |
2483 | result = res; | |
8bae0a0c JSC |
2484 | } |
2485 | break; | |
2486 | case fmt_double: | |
2487 | { | |
76ef4165 FL |
2488 | sim_fpu wop1; |
2489 | sim_fpu wop2; | |
2490 | sim_fpu ans; | |
2491 | unsigned64 res; | |
2492 | sim_fpu_64to (&wop1, op1); | |
2493 | sim_fpu_64to (&wop2, op2); | |
2494 | sim_fpu_sub (&ans, &wop1, &wop2); | |
2495 | sim_fpu_to64 (&res, &ans); | |
2496 | result = res; | |
8bae0a0c JSC |
2497 | } |
2498 | break; | |
50a2a691 AC |
2499 | default: |
2500 | fprintf (stderr, "Bad switch\n"); | |
2501 | abort (); | |
8bae0a0c JSC |
2502 | } |
2503 | ||
2504 | #ifdef DEBUG | |
53b9417e | 2505 | printf("DBG: Sub: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); |
8bae0a0c JSC |
2506 | #endif /* DEBUG */ |
2507 | ||
2508 | return(result); | |
2509 | } | |
2510 | ||
18c64df6 | 2511 | uword64 |
8bae0a0c | 2512 | Multiply(op1,op2,fmt) |
e871dd18 JSC |
2513 | uword64 op1; |
2514 | uword64 op2; | |
8bae0a0c JSC |
2515 | FP_formats fmt; |
2516 | { | |
50a2a691 | 2517 | uword64 result = 0; |
8bae0a0c JSC |
2518 | |
2519 | #ifdef DEBUG | |
53b9417e | 2520 | printf("DBG: Multiply: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); |
8bae0a0c JSC |
2521 | #endif /* DEBUG */ |
2522 | ||
e871dd18 JSC |
2523 | /* The registers must specify FPRs valid for operands of type |
2524 | "fmt". If they are not valid, the result is undefined. */ | |
8bae0a0c JSC |
2525 | |
2526 | /* The format type should already have been checked: */ | |
2527 | switch (fmt) { | |
2528 | case fmt_single: | |
2529 | { | |
76ef4165 FL |
2530 | sim_fpu wop1; |
2531 | sim_fpu wop2; | |
2532 | sim_fpu ans; | |
2533 | unsigned32 res; | |
2534 | sim_fpu_32to (&wop1, op1); | |
2535 | sim_fpu_32to (&wop2, op2); | |
2536 | sim_fpu_mul (&ans, &wop1, &wop2); | |
2537 | sim_fpu_to32 (&res, &ans); | |
2538 | result = res; | |
2539 | break; | |
8bae0a0c | 2540 | } |
8bae0a0c JSC |
2541 | case fmt_double: |
2542 | { | |
76ef4165 FL |
2543 | sim_fpu wop1; |
2544 | sim_fpu wop2; | |
2545 | sim_fpu ans; | |
2546 | unsigned64 res; | |
2547 | sim_fpu_64to (&wop1, op1); | |
2548 | sim_fpu_64to (&wop2, op2); | |
2549 | sim_fpu_mul (&ans, &wop1, &wop2); | |
2550 | sim_fpu_to64 (&res, &ans); | |
2551 | result = res; | |
2552 | break; | |
8bae0a0c | 2553 | } |
50a2a691 AC |
2554 | default: |
2555 | fprintf (stderr, "Bad switch\n"); | |
2556 | abort (); | |
8bae0a0c JSC |
2557 | } |
2558 | ||
2559 | #ifdef DEBUG | |
53b9417e | 2560 | printf("DBG: Multiply: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); |
8bae0a0c JSC |
2561 | #endif /* DEBUG */ |
2562 | ||
2563 | return(result); | |
2564 | } | |
2565 | ||
18c64df6 | 2566 | uword64 |
8bae0a0c | 2567 | Divide(op1,op2,fmt) |
e871dd18 JSC |
2568 | uword64 op1; |
2569 | uword64 op2; | |
8bae0a0c JSC |
2570 | FP_formats fmt; |
2571 | { | |
50a2a691 | 2572 | uword64 result = 0; |
8bae0a0c JSC |
2573 | |
2574 | #ifdef DEBUG | |
53b9417e | 2575 | printf("DBG: Divide: %s: op1 = 0x%s : op2 = 0x%s\n",DOFMT(fmt),pr_addr(op1),pr_addr(op2)); |
8bae0a0c JSC |
2576 | #endif /* DEBUG */ |
2577 | ||
e871dd18 JSC |
2578 | /* The registers must specify FPRs valid for operands of type |
2579 | "fmt". If they are not valid, the result is undefined. */ | |
8bae0a0c JSC |
2580 | |
2581 | /* The format type should already have been checked: */ | |
2582 | switch (fmt) { | |
2583 | case fmt_single: | |
2584 | { | |
76ef4165 FL |
2585 | sim_fpu wop1; |
2586 | sim_fpu wop2; | |
2587 | sim_fpu ans; | |
2588 | unsigned32 res; | |
2589 | sim_fpu_32to (&wop1, op1); | |
2590 | sim_fpu_32to (&wop2, op2); | |
2591 | sim_fpu_div (&ans, &wop1, &wop2); | |
2592 | sim_fpu_to32 (&res, &ans); | |
2593 | result = res; | |
2594 | break; | |
8bae0a0c | 2595 | } |
8bae0a0c JSC |
2596 | case fmt_double: |
2597 | { | |
76ef4165 FL |
2598 | sim_fpu wop1; |
2599 | sim_fpu wop2; | |
2600 | sim_fpu ans; | |
2601 | unsigned64 res; | |
2602 | sim_fpu_64to (&wop1, op1); | |
2603 | sim_fpu_64to (&wop2, op2); | |
2604 | sim_fpu_div (&ans, &wop1, &wop2); | |
2605 | sim_fpu_to64 (&res, &ans); | |
2606 | result = res; | |
2607 | break; | |
8bae0a0c | 2608 | } |
50a2a691 AC |
2609 | default: |
2610 | fprintf (stderr, "Bad switch\n"); | |
2611 | abort (); | |
8bae0a0c JSC |
2612 | } |
2613 | ||
2614 | #ifdef DEBUG | |
53b9417e | 2615 | printf("DBG: Divide: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); |
8bae0a0c JSC |
2616 | #endif /* DEBUG */ |
2617 | ||
2618 | return(result); | |
2619 | } | |
2620 | ||
18c64df6 | 2621 | uword64 UNUSED |
8bae0a0c | 2622 | Recip(op,fmt) |
e871dd18 | 2623 | uword64 op; |
8bae0a0c JSC |
2624 | FP_formats fmt; |
2625 | { | |
50a2a691 | 2626 | uword64 result = 0; |
8bae0a0c JSC |
2627 | |
2628 | #ifdef DEBUG | |
53b9417e | 2629 | printf("DBG: Recip: %s: op = 0x%s\n",DOFMT(fmt),pr_addr(op)); |
8bae0a0c JSC |
2630 | #endif /* DEBUG */ |
2631 | ||
e871dd18 JSC |
2632 | /* The registers must specify FPRs valid for operands of type |
2633 | "fmt". If they are not valid, the result is undefined. */ | |
8bae0a0c JSC |
2634 | |
2635 | /* The format type should already have been checked: */ | |
2636 | switch (fmt) { | |
2637 | case fmt_single: | |
2638 | { | |
76ef4165 FL |
2639 | sim_fpu wop; |
2640 | sim_fpu ans; | |
2641 | unsigned32 res; | |
2642 | sim_fpu_32to (&wop, op); | |
2643 | sim_fpu_inv (&ans, &wop); | |
2644 | sim_fpu_to32 (&res, &ans); | |
2645 | result = res; | |
2646 | break; | |
8bae0a0c | 2647 | } |
8bae0a0c JSC |
2648 | case fmt_double: |
2649 | { | |
76ef4165 FL |
2650 | sim_fpu wop; |
2651 | sim_fpu ans; | |
2652 | unsigned64 res; | |
2653 | sim_fpu_64to (&wop, op); | |
2654 | sim_fpu_inv (&ans, &wop); | |
2655 | sim_fpu_to64 (&res, &ans); | |
2656 | result = res; | |
2657 | break; | |
8bae0a0c | 2658 | } |
50a2a691 AC |
2659 | default: |
2660 | fprintf (stderr, "Bad switch\n"); | |
2661 | abort (); | |
8bae0a0c JSC |
2662 | } |
2663 | ||
2664 | #ifdef DEBUG | |
53b9417e | 2665 | printf("DBG: Recip: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); |
8bae0a0c JSC |
2666 | #endif /* DEBUG */ |
2667 | ||
2668 | return(result); | |
2669 | } | |
2670 | ||
18c64df6 | 2671 | uword64 |
8bae0a0c | 2672 | SquareRoot(op,fmt) |
e871dd18 | 2673 | uword64 op; |
8bae0a0c JSC |
2674 | FP_formats fmt; |
2675 | { | |
50a2a691 | 2676 | uword64 result = 0; |
8bae0a0c JSC |
2677 | |
2678 | #ifdef DEBUG | |
53b9417e | 2679 | printf("DBG: SquareRoot: %s: op = 0x%s\n",DOFMT(fmt),pr_addr(op)); |
8bae0a0c JSC |
2680 | #endif /* DEBUG */ |
2681 | ||
e871dd18 JSC |
2682 | /* The registers must specify FPRs valid for operands of type |
2683 | "fmt". If they are not valid, the result is undefined. */ | |
8bae0a0c JSC |
2684 | |
2685 | /* The format type should already have been checked: */ | |
2686 | switch (fmt) { | |
2687 | case fmt_single: | |
2688 | { | |
76ef4165 FL |
2689 | sim_fpu wop; |
2690 | sim_fpu ans; | |
2691 | unsigned32 res; | |
2692 | sim_fpu_32to (&wop, op); | |
2693 | sim_fpu_sqrt (&ans, &wop); | |
2694 | sim_fpu_to32 (&res, &ans); | |
2695 | result = res; | |
2696 | break; | |
8bae0a0c | 2697 | } |
8bae0a0c JSC |
2698 | case fmt_double: |
2699 | { | |
76ef4165 FL |
2700 | sim_fpu wop; |
2701 | sim_fpu ans; | |
2702 | unsigned64 res; | |
2703 | sim_fpu_64to (&wop, op); | |
2704 | sim_fpu_sqrt (&ans, &wop); | |
2705 | sim_fpu_to64 (&res, &ans); | |
2706 | result = res; | |
2707 | break; | |
8bae0a0c | 2708 | } |
50a2a691 AC |
2709 | default: |
2710 | fprintf (stderr, "Bad switch\n"); | |
2711 | abort (); | |
8bae0a0c JSC |
2712 | } |
2713 | ||
2714 | #ifdef DEBUG | |
53b9417e | 2715 | printf("DBG: SquareRoot: returning 0x%s (format = %s)\n",pr_addr(result),DOFMT(fmt)); |
8bae0a0c JSC |
2716 | #endif /* DEBUG */ |
2717 | ||
2718 | return(result); | |
2719 | } | |
2720 | ||
18c64df6 | 2721 | uword64 |
01737f42 AC |
2722 | convert (SIM_DESC sd, |
2723 | sim_cpu *cpu, | |
2724 | address_word cia, | |
2725 | int rm, | |
2726 | uword64 op, | |
2727 | FP_formats from, | |
2728 | FP_formats to) | |
8bae0a0c | 2729 | { |
76ef4165 FL |
2730 | sim_fpu wop; |
2731 | sim_fpu_round round; | |
2732 | unsigned32 result32; | |
2733 | unsigned64 result64; | |
8bae0a0c JSC |
2734 | |
2735 | #ifdef DEBUG | |
53b9417e | 2736 | 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 |
2737 | #endif /* DEBUG */ |
2738 | ||
76ef4165 | 2739 | switch (rm) |
8bae0a0c | 2740 | { |
76ef4165 FL |
2741 | case FP_RM_NEAREST: |
2742 | /* Round result to nearest representable value. When two | |
2743 | representable values are equally near, round to the value | |
2744 | that has a least significant bit of zero (i.e. is even). */ | |
2745 | round = sim_fpu_round_near; | |
2746 | break; | |
2747 | case FP_RM_TOZERO: | |
2748 | /* Round result to the value closest to, and not greater in | |
2749 | magnitude than, the result. */ | |
2750 | round = sim_fpu_round_zero; | |
2751 | break; | |
2752 | case FP_RM_TOPINF: | |
2753 | /* Round result to the value closest to, and not less than, | |
2754 | the result. */ | |
2755 | round = sim_fpu_round_up; | |
2756 | break; | |
2757 | ||
2758 | case FP_RM_TOMINF: | |
2759 | /* Round result to the value closest to, and not greater than, | |
2760 | the result. */ | |
2761 | round = sim_fpu_round_down; | |
2762 | break; | |
2763 | default: | |
2764 | round = 0; | |
2765 | fprintf (stderr, "Bad switch\n"); | |
2766 | abort (); | |
8bae0a0c | 2767 | } |
76ef4165 FL |
2768 | |
2769 | /* Convert the input to sim_fpu internal format */ | |
2770 | switch (from) | |
8bae0a0c | 2771 | { |
76ef4165 FL |
2772 | case fmt_double: |
2773 | sim_fpu_64to (&wop, op); | |
2774 | break; | |
2775 | case fmt_single: | |
2776 | sim_fpu_32to (&wop, op); | |
2777 | break; | |
2778 | case fmt_word: | |
2779 | sim_fpu_i32to (&wop, op, round); | |
2780 | break; | |
2781 | case fmt_long: | |
2782 | sim_fpu_i64to (&wop, op, round); | |
2783 | break; | |
2784 | default: | |
2785 | fprintf (stderr, "Bad switch\n"); | |
2786 | abort (); | |
8bae0a0c | 2787 | } |
8bae0a0c | 2788 | |
76ef4165 FL |
2789 | /* Convert sim_fpu format into the output */ |
2790 | /* The value WOP is converted to the destination format, rounding | |
2791 | using mode RM. When the destination is a fixed-point format, then | |
2792 | a source value of Infinity, NaN or one which would round to an | |
2793 | integer outside the fixed point range then an IEEE Invalid | |
2794 | Operation condition is raised. */ | |
2795 | switch (to) | |
2796 | { | |
2797 | case fmt_single: | |
2798 | sim_fpu_round_32 (&wop, round, 0); | |
2799 | sim_fpu_to32 (&result32, &wop); | |
2800 | result64 = result32; | |
2801 | break; | |
2802 | case fmt_double: | |
2803 | sim_fpu_round_64 (&wop, round, 0); | |
2804 | sim_fpu_to64 (&result64, &wop); | |
2805 | break; | |
2806 | case fmt_word: | |
2807 | sim_fpu_to32i (&result32, &wop, round); | |
2808 | result64 = result32; | |
2809 | break; | |
2810 | case fmt_long: | |
2811 | sim_fpu_to64i (&result64, &wop, round); | |
2812 | break; | |
2813 | default: | |
2814 | result64 = 0; | |
2815 | fprintf (stderr, "Bad switch\n"); | |
2816 | abort (); | |
8bae0a0c | 2817 | } |
76ef4165 | 2818 | |
8bae0a0c | 2819 | #ifdef DEBUG |
76ef4165 | 2820 | printf("DBG: Convert: returning 0x%s (to format = %s)\n",pr_addr(result64),DOFMT(to)); |
8bae0a0c JSC |
2821 | #endif /* DEBUG */ |
2822 | ||
76ef4165 | 2823 | return(result64); |
8bae0a0c | 2824 | } |
8bae0a0c | 2825 | |
76ef4165 | 2826 | |
8bae0a0c JSC |
2827 | /*-- co-processor support routines ------------------------------------------*/ |
2828 | ||
2f2e6c5d | 2829 | static int UNUSED |
8bae0a0c JSC |
2830 | CoProcPresent(coproc_number) |
2831 | unsigned int coproc_number; | |
2832 | { | |
2833 | /* Return TRUE if simulator provides a model for the given co-processor number */ | |
2834 | return(0); | |
2835 | } | |
2836 | ||
18c64df6 | 2837 | void |
01737f42 AC |
2838 | cop_lw (SIM_DESC sd, |
2839 | sim_cpu *cpu, | |
2840 | address_word cia, | |
2841 | int coproc_num, | |
2842 | int coproc_reg, | |
2843 | unsigned int memword) | |
8bae0a0c | 2844 | { |
192ae475 AC |
2845 | switch (coproc_num) |
2846 | { | |
8bae0a0c | 2847 | case 1: |
192ae475 AC |
2848 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) |
2849 | { | |
8bae0a0c | 2850 | #ifdef DEBUG |
192ae475 | 2851 | printf("DBG: COP_LW: memword = 0x%08X (uword64)memword = 0x%s\n",memword,pr_addr(memword)); |
8bae0a0c | 2852 | #endif |
192ae475 AC |
2853 | StoreFPR(coproc_reg,fmt_word,(uword64)memword); |
2854 | FPR_STATE[coproc_reg] = fmt_uninterpreted; | |
2855 | break; | |
2856 | } | |
8bae0a0c JSC |
2857 | |
2858 | default: | |
f24b7b69 | 2859 | #if 0 /* this should be controlled by a configuration option */ |
192ae475 | 2860 | 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 | 2861 | #endif |
192ae475 AC |
2862 | break; |
2863 | } | |
8bae0a0c JSC |
2864 | |
2865 | return; | |
2866 | } | |
2867 | ||
18c64df6 | 2868 | void |
01737f42 AC |
2869 | cop_ld (SIM_DESC sd, |
2870 | sim_cpu *cpu, | |
2871 | address_word cia, | |
2872 | int coproc_num, | |
2873 | int coproc_reg, | |
2874 | uword64 memword) | |
8bae0a0c JSC |
2875 | { |
2876 | switch (coproc_num) { | |
8bae0a0c | 2877 | case 1: |
192ae475 AC |
2878 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) |
2879 | { | |
2880 | StoreFPR(coproc_reg,fmt_uninterpreted,memword); | |
2881 | break; | |
2882 | } | |
8bae0a0c JSC |
2883 | |
2884 | default: | |
f24b7b69 | 2885 | #if 0 /* this message should be controlled by a configuration option */ |
95469ceb | 2886 | 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 | 2887 | #endif |
8bae0a0c JSC |
2888 | break; |
2889 | } | |
2890 | ||
2891 | return; | |
2892 | } | |
2893 | ||
18c64df6 | 2894 | unsigned int |
01737f42 AC |
2895 | cop_sw (SIM_DESC sd, |
2896 | sim_cpu *cpu, | |
2897 | address_word cia, | |
2898 | int coproc_num, | |
2899 | int coproc_reg) | |
8bae0a0c JSC |
2900 | { |
2901 | unsigned int value = 0; | |
da0bce9c | 2902 | |
192ae475 AC |
2903 | switch (coproc_num) |
2904 | { | |
8bae0a0c | 2905 | case 1: |
192ae475 AC |
2906 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) |
2907 | { | |
2908 | FP_formats hold; | |
2909 | hold = FPR_STATE[coproc_reg]; | |
2910 | FPR_STATE[coproc_reg] = fmt_word; | |
2911 | value = (unsigned int)ValueFPR(coproc_reg,fmt_uninterpreted); | |
2912 | FPR_STATE[coproc_reg] = hold; | |
2913 | break; | |
2914 | } | |
8bae0a0c JSC |
2915 | |
2916 | default: | |
f24b7b69 | 2917 | #if 0 /* should be controlled by configuration option */ |
192ae475 | 2918 | sim_io_printf(sd,"COP_SW(%d,%d) at PC = 0x%s : TODO (architecture specific)\n",coproc_num,coproc_reg,pr_addr(cia)); |
f24b7b69 | 2919 | #endif |
192ae475 AC |
2920 | break; |
2921 | } | |
8bae0a0c JSC |
2922 | |
2923 | return(value); | |
2924 | } | |
2925 | ||
18c64df6 | 2926 | uword64 |
01737f42 AC |
2927 | cop_sd (SIM_DESC sd, |
2928 | sim_cpu *cpu, | |
2929 | address_word cia, | |
2930 | int coproc_num, | |
2931 | int coproc_reg) | |
8bae0a0c | 2932 | { |
e871dd18 | 2933 | uword64 value = 0; |
192ae475 AC |
2934 | switch (coproc_num) |
2935 | { | |
8bae0a0c | 2936 | case 1: |
192ae475 AC |
2937 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) |
2938 | { | |
2939 | value = ValueFPR(coproc_reg,fmt_uninterpreted); | |
2940 | break; | |
2941 | } | |
8bae0a0c JSC |
2942 | |
2943 | default: | |
f24b7b69 | 2944 | #if 0 /* should be controlled by configuration option */ |
192ae475 | 2945 | sim_io_printf(sd,"COP_SD(%d,%d) at PC = 0x%s : TODO (architecture specific)\n",coproc_num,coproc_reg,pr_addr(cia)); |
f24b7b69 | 2946 | #endif |
192ae475 AC |
2947 | break; |
2948 | } | |
8bae0a0c JSC |
2949 | |
2950 | return(value); | |
2951 | } | |
2952 | ||
ea985d24 | 2953 | void |
01737f42 AC |
2954 | decode_coproc (SIM_DESC sd, |
2955 | sim_cpu *cpu, | |
2956 | address_word cia, | |
2957 | unsigned int instruction) | |
8bae0a0c JSC |
2958 | { |
2959 | int coprocnum = ((instruction >> 26) & 3); | |
2960 | ||
56e7c849 AC |
2961 | switch (coprocnum) |
2962 | { | |
8bae0a0c JSC |
2963 | case 0: /* standard CPU control and cache registers */ |
2964 | { | |
8bae0a0c JSC |
2965 | int code = ((instruction >> 21) & 0x1F); |
2966 | /* R4000 Users Manual (second edition) lists the following CP0 | |
2967 | instructions: | |
56e7c849 AC |
2968 | DMFC0 Doubleword Move From CP0 (VR4100 = 01000000001tttttddddd00000000000) |
2969 | DMTC0 Doubleword Move To CP0 (VR4100 = 01000000101tttttddddd00000000000) | |
2970 | MFC0 word Move From CP0 (VR4100 = 01000000000tttttddddd00000000000) | |
2971 | MTC0 word Move To CP0 (VR4100 = 01000000100tttttddddd00000000000) | |
2972 | TLBR Read Indexed TLB Entry (VR4100 = 01000010000000000000000000000001) | |
2973 | TLBWI Write Indexed TLB Entry (VR4100 = 01000010000000000000000000000010) | |
2974 | TLBWR Write Random TLB Entry (VR4100 = 01000010000000000000000000000110) | |
2975 | TLBP Probe TLB for Matching Entry (VR4100 = 01000010000000000000000000001000) | |
2976 | CACHE Cache operation (VR4100 = 101111bbbbbpppppiiiiiiiiiiiiiiii) | |
2977 | ERET Exception return (VR4100 = 01000010000000000000000000011000) | |
2978 | */ | |
2979 | if (((code == 0x00) || (code == 0x04)) && ((instruction & 0x7FF) == 0)) | |
2980 | { | |
2981 | int rt = ((instruction >> 16) & 0x1F); | |
2982 | int rd = ((instruction >> 11) & 0x1F); | |
2983 | ||
2984 | switch (rd) /* NOTEs: Standard CP0 registers */ | |
2985 | { | |
2986 | /* 0 = Index R4000 VR4100 VR4300 */ | |
2987 | /* 1 = Random R4000 VR4100 VR4300 */ | |
2988 | /* 2 = EntryLo0 R4000 VR4100 VR4300 */ | |
2989 | /* 3 = EntryLo1 R4000 VR4100 VR4300 */ | |
2990 | /* 4 = Context R4000 VR4100 VR4300 */ | |
2991 | /* 5 = PageMask R4000 VR4100 VR4300 */ | |
2992 | /* 6 = Wired R4000 VR4100 VR4300 */ | |
2993 | /* 8 = BadVAddr R4000 VR4100 VR4300 */ | |
2994 | /* 9 = Count R4000 VR4100 VR4300 */ | |
2995 | /* 10 = EntryHi R4000 VR4100 VR4300 */ | |
2996 | /* 11 = Compare R4000 VR4100 VR4300 */ | |
2997 | /* 12 = SR R4000 VR4100 VR4300 */ | |
2998 | case 12: | |
2999 | if (code == 0x00) | |
3000 | GPR[rt] = SR; | |
3001 | else | |
3002 | SR = GPR[rt]; | |
3003 | break; | |
3004 | /* 13 = Cause R4000 VR4100 VR4300 */ | |
05d1322f JL |
3005 | case 13: |
3006 | if (code == 0x00) | |
3007 | GPR[rt] = CAUSE; | |
3008 | else | |
3009 | CAUSE = GPR[rt]; | |
3010 | break; | |
56e7c849 AC |
3011 | /* 14 = EPC R4000 VR4100 VR4300 */ |
3012 | /* 15 = PRId R4000 VR4100 VR4300 */ | |
6eedf3f4 MA |
3013 | #ifdef SUBTARGET_R3900 |
3014 | /* 16 = Debug */ | |
3015 | case 16: | |
3016 | if (code == 0x00) | |
3017 | GPR[rt] = Debug; | |
3018 | else | |
3019 | Debug = GPR[rt]; | |
3020 | break; | |
3021 | #else | |
56e7c849 | 3022 | /* 16 = Config R4000 VR4100 VR4300 */ |
a09a30d2 AC |
3023 | case 16: |
3024 | if (code == 0x00) | |
3025 | GPR[rt] = C0_CONFIG; | |
3026 | else | |
3027 | C0_CONFIG = GPR[rt]; | |
3028 | break; | |
6eedf3f4 MA |
3029 | #endif |
3030 | #ifdef SUBTARGET_R3900 | |
3031 | /* 17 = Debug */ | |
3032 | case 17: | |
3033 | if (code == 0x00) | |
3034 | GPR[rt] = DEPC; | |
3035 | else | |
3036 | DEPC = GPR[rt]; | |
3037 | break; | |
3038 | #else | |
56e7c849 | 3039 | /* 17 = LLAddr R4000 VR4100 VR4300 */ |
6eedf3f4 | 3040 | #endif |
56e7c849 AC |
3041 | /* 18 = WatchLo R4000 VR4100 VR4300 */ |
3042 | /* 19 = WatchHi R4000 VR4100 VR4300 */ | |
3043 | /* 20 = XContext R4000 VR4100 VR4300 */ | |
3044 | /* 26 = PErr or ECC R4000 VR4100 VR4300 */ | |
3045 | /* 27 = CacheErr R4000 VR4100 */ | |
3046 | /* 28 = TagLo R4000 VR4100 VR4300 */ | |
3047 | /* 29 = TagHi R4000 VR4100 VR4300 */ | |
3048 | /* 30 = ErrorEPC R4000 VR4100 VR4300 */ | |
3049 | GPR[rt] = 0xDEADC0DE; /* CPR[0,rd] */ | |
3050 | /* CPR[0,rd] = GPR[rt]; */ | |
3051 | default: | |
3052 | if (code == 0x00) | |
18c64df6 | 3053 | sim_io_printf(sd,"Warning: MFC0 %d,%d ignored (architecture specific)\n",rt,rd); |
56e7c849 | 3054 | else |
18c64df6 | 3055 | sim_io_printf(sd,"Warning: MTC0 %d,%d ignored (architecture specific)\n",rt,rd); |
56e7c849 AC |
3056 | } |
3057 | } | |
3058 | else if (code == 0x10 && (instruction & 0x3f) == 0x18) | |
3059 | { | |
3060 | /* ERET */ | |
3061 | if (SR & status_ERL) | |
3062 | { | |
3063 | /* Oops, not yet available */ | |
18c64df6 | 3064 | sim_io_printf(sd,"Warning: ERET when SR[ERL] set not handled yet"); |
56e7c849 AC |
3065 | PC = EPC; |
3066 | SR &= ~status_ERL; | |
3067 | } | |
3068 | else | |
3069 | { | |
3070 | PC = EPC; | |
3071 | SR &= ~status_EXL; | |
3072 | } | |
3073 | } | |
6eedf3f4 MA |
3074 | else if (code == 0x10 && (instruction & 0x3f) == 0x10) |
3075 | { | |
3076 | /* RFE */ | |
3077 | } | |
3078 | else if (code == 0x10 && (instruction & 0x3f) == 0x1F) | |
3079 | { | |
3080 | /* DERET */ | |
3081 | Debug &= ~Debug_DM; | |
3082 | DELAYSLOT(); | |
3083 | DSPC = DEPC; | |
3084 | } | |
56e7c849 | 3085 | else |
95469ceb | 3086 | sim_io_eprintf(sd,"Unrecognised COP0 instruction 0x%08X at PC = 0x%s : No handler present\n",instruction,pr_addr(cia)); |
e871dd18 | 3087 | /* TODO: When executing an ERET or RFE instruction we should |
8bae0a0c JSC |
3088 | clear LLBIT, to ensure that any out-standing atomic |
3089 | read/modify/write sequence fails. */ | |
3090 | } | |
56e7c849 AC |
3091 | break; |
3092 | ||
8bae0a0c | 3093 | case 2: /* undefined co-processor */ |
95469ceb | 3094 | sim_io_eprintf(sd,"COP2 instruction 0x%08X at PC = 0x%s : No handler present\n",instruction,pr_addr(cia)); |
8bae0a0c | 3095 | break; |
56e7c849 | 3096 | |
8bae0a0c JSC |
3097 | case 1: /* should not occur (FPU co-processor) */ |
3098 | case 3: /* should not occur (FPU co-processor) */ | |
3099 | SignalException(ReservedInstruction,instruction); | |
3100 | break; | |
56e7c849 AC |
3101 | } |
3102 | ||
8bae0a0c JSC |
3103 | return; |
3104 | } | |
3105 | ||
3106 | /*-- instruction simulation -------------------------------------------------*/ | |
3107 | ||
16bd5d6e AC |
3108 | /* When the IGEN simulator is being built, the function below is be |
3109 | replaced by a generated version. However, WITH_IGEN == 2 indicates | |
3110 | that the fubction below should be compiled but under a different | |
3111 | name (to allow backward compatibility) */ | |
3112 | ||
3113 | #if (WITH_IGEN != 1) | |
3114 | #if (WITH_IGEN > 1) | |
dad6f1f3 AC |
3115 | void old_engine_run PARAMS ((SIM_DESC sd, int next_cpu_nr, int siggnal)); |
3116 | void | |
9ec6741b | 3117 | old_engine_run (sd, next_cpu_nr, nr_cpus, siggnal) |
dad6f1f3 | 3118 | #else |
2e61a3ad | 3119 | void |
9ec6741b | 3120 | sim_engine_run (sd, next_cpu_nr, nr_cpus, siggnal) |
dad6f1f3 | 3121 | #endif |
2e61a3ad AC |
3122 | SIM_DESC sd; |
3123 | int next_cpu_nr; /* ignore */ | |
9ec6741b | 3124 | int nr_cpus; /* ignore */ |
2e61a3ad | 3125 | int siggnal; /* ignore */ |
8bae0a0c | 3126 | { |
01737f42 | 3127 | sim_cpu *cpu = STATE_CPU (sd, 0); /* hardwire to cpu 0 */ |
50a2a691 | 3128 | #if !defined(FASTSIM) |
8bae0a0c | 3129 | unsigned int pipeline_count = 1; |
50a2a691 | 3130 | #endif |
8bae0a0c JSC |
3131 | |
3132 | #ifdef DEBUG | |
50a2a691 | 3133 | if (STATE_MEMORY (sd) == NULL) { |
8bae0a0c JSC |
3134 | printf("DBG: simulate() entered with no memory\n"); |
3135 | exit(1); | |
3136 | } | |
3137 | #endif /* DEBUG */ | |
3138 | ||
3139 | #if 0 /* Disabled to check that everything works OK */ | |
3140 | /* The VR4300 seems to sign-extend the PC on its first | |
3141 | access. However, this may just be because it is currently | |
3142 | configured in 32bit mode. However... */ | |
3143 | PC = SIGNEXTEND(PC,32); | |
3144 | #endif | |
3145 | ||
3146 | /* main controlling loop */ | |
2e61a3ad | 3147 | while (1) { |
7ce8b917 AC |
3148 | /* vaddr is slowly being replaced with cia - current instruction |
3149 | address */ | |
3150 | address_word cia = (uword64)PC; | |
3151 | address_word vaddr = cia; | |
dad6f1f3 | 3152 | address_word paddr; |
8bae0a0c | 3153 | int cca; |
53b9417e | 3154 | unsigned int instruction; /* uword64? what's this used for? FIXME! */ |
8bae0a0c JSC |
3155 | |
3156 | #ifdef DEBUG | |
3157 | { | |
3158 | printf("DBG: state = 0x%08X :",state); | |
8bae0a0c JSC |
3159 | if (state & simHALTEX) printf(" simHALTEX"); |
3160 | if (state & simHALTIN) printf(" simHALTIN"); | |
53b9417e | 3161 | printf("\n"); |
8bae0a0c JSC |
3162 | } |
3163 | #endif /* DEBUG */ | |
3164 | ||
0c2c5f61 | 3165 | DSSTATE = (STATE & simDELAYSLOT); |
8bae0a0c JSC |
3166 | #ifdef DEBUG |
3167 | if (dsstate) | |
18c64df6 | 3168 | sim_io_printf(sd,"DBG: DSPC = 0x%s\n",pr_addr(DSPC)); |
8bae0a0c JSC |
3169 | #endif /* DEBUG */ |
3170 | ||
7ce8b917 AC |
3171 | /* Fetch the next instruction from the simulator memory: */ |
3172 | if (AddressTranslation(cia,isINSTRUCTION,isLOAD,&paddr,&cca,isTARGET,isREAL)) { | |
6429b296 JW |
3173 | if ((vaddr & 1) == 0) { |
3174 | /* Copy the action of the LW instruction */ | |
3175 | unsigned int reverse = (ReverseEndian ? (LOADDRMASK >> 2) : 0); | |
3176 | unsigned int bigend = (BigEndianCPU ? (LOADDRMASK >> 2) : 0); | |
3177 | uword64 value; | |
3178 | unsigned int byte; | |
3179 | paddr = ((paddr & ~LOADDRMASK) | ((paddr & LOADDRMASK) ^ (reverse << 2))); | |
53b9417e | 3180 | LoadMemory(&value,NULL,cca,AccessLength_WORD,paddr,vaddr,isINSTRUCTION,isREAL); |
6429b296 JW |
3181 | byte = ((vaddr & LOADDRMASK) ^ (bigend << 2)); |
3182 | instruction = ((value >> (8 * byte)) & 0xFFFFFFFF); | |
3183 | } else { | |
3184 | /* Copy the action of the LH instruction */ | |
3185 | unsigned int reverse = (ReverseEndian ? (LOADDRMASK >> 1) : 0); | |
3186 | unsigned int bigend = (BigEndianCPU ? (LOADDRMASK >> 1) : 0); | |
3187 | uword64 value; | |
3188 | unsigned int byte; | |
3189 | paddr = (((paddr & ~ (uword64) 1) & ~LOADDRMASK) | |
3190 | | (((paddr & ~ (uword64) 1) & LOADDRMASK) ^ (reverse << 1))); | |
53b9417e | 3191 | LoadMemory(&value,NULL,cca, AccessLength_HALFWORD, |
6429b296 JW |
3192 | paddr & ~ (uword64) 1, |
3193 | vaddr, isINSTRUCTION, isREAL); | |
3194 | byte = (((vaddr &~ (uword64) 1) & LOADDRMASK) ^ (bigend << 1)); | |
3195 | instruction = ((value >> (8 * byte)) & 0xFFFF); | |
3196 | } | |
8bae0a0c | 3197 | } else { |
53b9417e | 3198 | fprintf(stderr,"Cannot translate address for PC = 0x%s failed\n",pr_addr(PC)); |
8bae0a0c JSC |
3199 | exit(1); |
3200 | } | |
3201 | ||
3202 | #ifdef DEBUG | |
18c64df6 | 3203 | sim_io_printf(sd,"DBG: fetched 0x%08X from PC = 0x%s\n",instruction,pr_addr(PC)); |
8bae0a0c JSC |
3204 | #endif /* DEBUG */ |
3205 | ||
8bae0a0c JSC |
3206 | /* This is required by exception processing, to ensure that we can |
3207 | cope with exceptions in the delay slots of branches that may | |
3208 | already have changed the PC. */ | |
6429b296 JW |
3209 | if ((vaddr & 1) == 0) |
3210 | PC += 4; /* increment ready for the next fetch */ | |
3211 | else | |
3212 | PC += 2; | |
8bae0a0c JSC |
3213 | /* NOTE: If we perform a delay slot change to the PC, this |
3214 | increment is not requuired. However, it would make the | |
3215 | simulator more complicated to try and avoid this small hit. */ | |
3216 | ||
3217 | /* Currently this code provides a simple model. For more | |
3218 | complicated models we could perform exception status checks at | |
3219 | this point, and set the simSTOP state as required. This could | |
3220 | also include processing any hardware interrupts raised by any | |
3221 | I/O model attached to the simulator context. | |
3222 | ||
3223 | Support for "asynchronous" I/O events within the simulated world | |
3224 | could be providing by managing a counter, and calling a I/O | |
3225 | specific handler when a particular threshold is reached. On most | |
3226 | architectures a decrement and check for zero operation is | |
3227 | usually quicker than an increment and compare. However, the | |
3228 | process of managing a known value decrement to zero, is higher | |
3229 | than the cost of using an explicit value UINT_MAX into the | |
3230 | future. Which system is used will depend on how complicated the | |
3231 | I/O model is, and how much it is likely to affect the simulator | |
3232 | bandwidth. | |
3233 | ||
3234 | If events need to be scheduled further in the future than | |
3235 | UINT_MAX event ticks, then the I/O model should just provide its | |
3236 | own counter, triggered from the event system. */ | |
3237 | ||
3238 | /* MIPS pipeline ticks. To allow for future support where the | |
3239 | pipeline hit of individual instructions is known, this control | |
3240 | loop manages a "pipeline_count" variable. It is initialised to | |
3241 | 1 (one), and will only be changed by the simulator engine when | |
3242 | executing an instruction. If the engine does not have access to | |
3243 | pipeline cycle count information then all instructions will be | |
3244 | treated as using a single cycle. NOTE: A standard system is not | |
3245 | provided by the default simulator because different MIPS | |
3246 | architectures have different cycle counts for the same | |
50a2a691 AC |
3247 | instructions. |
3248 | ||
3249 | [NOTE: pipeline_count has been replaced the event queue] */ | |
8bae0a0c | 3250 | |
a09a30d2 AC |
3251 | /* shuffle the floating point status pipeline state */ |
3252 | ENGINE_ISSUE_PREFIX_HOOK(); | |
8bae0a0c JSC |
3253 | |
3254 | /* NOTE: For multi-context simulation environments the "instruction" | |
3255 | variable should be local to this routine. */ | |
3256 | ||
3257 | /* Shorthand accesses for engine. Note: If we wanted to use global | |
3258 | variables (and a single-threaded simulator engine), then we can | |
3259 | create the actual variables with these names. */ | |
3260 | ||
0c2c5f61 | 3261 | if (!(STATE & simSKIPNEXT)) { |
8bae0a0c | 3262 | /* Include the simulator engine */ |
284e759d | 3263 | #include "oengine.c" |
f24b7b69 | 3264 | #if ((GPRLEN == 64) && !PROCESSOR_64BIT) || ((GPRLEN == 32) && PROCESSOR_64BIT) |
8bae0a0c JSC |
3265 | #error "Mismatch between run-time simulator code and simulation engine" |
3266 | #endif | |
18c64df6 AC |
3267 | #if (WITH_TARGET_WORD_BITSIZE != GPRLEN) |
3268 | #error "Mismatch between configure WITH_TARGET_WORD_BITSIZE and gencode GPRLEN" | |
3269 | #endif | |
76ef4165 | 3270 | #if ((WITH_FLOATING_POINT == HARD_FLOATING_POINT) != defined (HASFPU)) |
18c64df6 AC |
3271 | #error "Mismatch between configure WITH_FLOATING_POINT and gencode HASFPU" |
3272 | #endif | |
8bae0a0c JSC |
3273 | |
3274 | #if defined(WARN_LOHI) | |
3275 | /* Decrement the HI/LO validity ticks */ | |
3276 | if (HIACCESS > 0) | |
3277 | HIACCESS--; | |
3278 | if (LOACCESS > 0) | |
3279 | LOACCESS--; | |
0425cfb3 | 3280 | /* start-sanitize-r5900 */ |
53b9417e DE |
3281 | if (HI1ACCESS > 0) |
3282 | HI1ACCESS--; | |
3283 | if (LO1ACCESS > 0) | |
3284 | LO1ACCESS--; | |
0425cfb3 | 3285 | /* end-sanitize-r5900 */ |
8bae0a0c JSC |
3286 | #endif /* WARN_LOHI */ |
3287 | ||
8bae0a0c JSC |
3288 | /* For certain MIPS architectures, GPR[0] is hardwired to zero. We |
3289 | should check for it being changed. It is better doing it here, | |
3290 | than within the simulator, since it will help keep the simulator | |
3291 | small. */ | |
3292 | if (ZERO != 0) { | |
05d1322f | 3293 | #if defined(WARN_ZERO) |
95469ceb | 3294 | 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 | 3295 | #endif /* WARN_ZERO */ |
8bae0a0c JSC |
3296 | ZERO = 0; /* reset back to zero before next instruction */ |
3297 | } | |
8bae0a0c | 3298 | } else /* simSKIPNEXT check */ |
0c2c5f61 | 3299 | STATE &= ~simSKIPNEXT; |
8bae0a0c JSC |
3300 | |
3301 | /* If the delay slot was active before the instruction is | |
3302 | executed, then update the PC to its new value: */ | |
0c2c5f61 | 3303 | if (DSSTATE) { |
8bae0a0c | 3304 | #ifdef DEBUG |
53b9417e | 3305 | printf("DBG: dsstate set before instruction execution - updating PC to 0x%s\n",pr_addr(DSPC)); |
8bae0a0c JSC |
3306 | #endif /* DEBUG */ |
3307 | PC = DSPC; | |
6eedf3f4 | 3308 | CANCELDELAYSLOT(); |
8bae0a0c JSC |
3309 | } |
3310 | ||
3311 | if (MIPSISA < 4) { /* The following is only required on pre MIPS IV processors: */ | |
3312 | /* Deal with pending register updates: */ | |
3313 | #ifdef DEBUG | |
3314 | printf("DBG: EMPTY BEFORE pending_in = %d, pending_out = %d, pending_total = %d\n",pending_in,pending_out,pending_total); | |
3315 | #endif /* DEBUG */ | |
0c2c5f61 | 3316 | if (PENDING_OUT != PENDING_IN) { |
8bae0a0c | 3317 | int loop; |
0c2c5f61 AC |
3318 | int index = PENDING_OUT; |
3319 | int total = PENDING_TOTAL; | |
3320 | if (PENDING_TOTAL == 0) { | |
8bae0a0c JSC |
3321 | fprintf(stderr,"FATAL: Mis-match on pending update pointers\n"); |
3322 | exit(1); | |
3323 | } | |
3324 | for (loop = 0; (loop < total); loop++) { | |
3325 | #ifdef DEBUG | |
3326 | printf("DBG: BEFORE index = %d, loop = %d\n",index,loop); | |
3327 | #endif /* DEBUG */ | |
0c2c5f61 | 3328 | if (PENDING_SLOT_REG[index] != (LAST_EMBED_REGNUM + 1)) { |
8bae0a0c | 3329 | #ifdef DEBUG |
0c2c5f61 | 3330 | printf("pending_slot_count[%d] = %d\n",index,PENDING_SLOT_COUNT[index]); |
8bae0a0c | 3331 | #endif /* DEBUG */ |
0c2c5f61 | 3332 | if (--(PENDING_SLOT_COUNT[index]) == 0) { |
8bae0a0c | 3333 | #ifdef DEBUG |
0c2c5f61 AC |
3334 | printf("pending_slot_reg[%d] = %d\n",index,PENDING_SLOT_REG[index]); |
3335 | printf("pending_slot_value[%d] = 0x%s\n",index,pr_addr(PENDING_SLOT_VALUE[index])); | |
8bae0a0c | 3336 | #endif /* DEBUG */ |
192ae475 AC |
3337 | if (PENDING_SLOT_REG[index] == COCIDX) |
3338 | { | |
3339 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) | |
3340 | { | |
3341 | SETFCC(0,((FCR31 & (1 << 23)) ? 1 : 0)); | |
3342 | } | |
3343 | } | |
3344 | else | |
3345 | { | |
3346 | REGISTERS[PENDING_SLOT_REG[index]] = PENDING_SLOT_VALUE[index]; | |
3347 | if (CURRENT_FLOATING_POINT == HARD_FLOATING_POINT) | |
3348 | { | |
3349 | /* The only time we have PENDING updates to FPU | |
3350 | registers, is when performing binary transfers. This | |
3351 | means we should update the register type field. */ | |
3352 | if ((PENDING_SLOT_REG[index] >= FGRIDX) && (PENDING_SLOT_REG[index] < (FGRIDX + 32))) | |
3353 | FPR_STATE[PENDING_SLOT_REG[index] - FGRIDX] = fmt_uninterpreted; | |
3354 | } | |
3355 | } | |
8bae0a0c | 3356 | #ifdef DEBUG |
0c2c5f61 | 3357 | printf("registers[%d] = 0x%s\n",PENDING_SLOT_REG[index],pr_addr(REGISTERS[PENDING_SLOT_REG[index]])); |
8bae0a0c | 3358 | #endif /* DEBUG */ |
0c2c5f61 AC |
3359 | PENDING_SLOT_REG[index] = (LAST_EMBED_REGNUM + 1); |
3360 | PENDING_OUT++; | |
3361 | if (PENDING_OUT == PSLOTS) | |
3362 | PENDING_OUT = 0; | |
3363 | PENDING_TOTAL--; | |
8bae0a0c JSC |
3364 | } |
3365 | } | |
3366 | #ifdef DEBUG | |
3367 | printf("DBG: AFTER index = %d, loop = %d\n",index,loop); | |
3368 | #endif /* DEBUG */ | |
3369 | index++; | |
3370 | if (index == PSLOTS) | |
3371 | index = 0; | |
3372 | } | |
3373 | } | |
3374 | #ifdef DEBUG | |
0c2c5f61 | 3375 | printf("DBG: EMPTY AFTER pending_in = %d, pending_out = %d, pending_total = %d\n",PENDING_IN,PENDING_OUT,PENDING_TOTAL); |
8bae0a0c JSC |
3376 | #endif /* DEBUG */ |
3377 | } | |
3378 | ||
3379 | #if !defined(FASTSIM) | |
50a2a691 AC |
3380 | if (sim_events_tickn (sd, pipeline_count)) |
3381 | { | |
3382 | /* cpu->cia = cia; */ | |
3383 | sim_events_process (sd); | |
3384 | } | |
3385 | #else | |
2e61a3ad AC |
3386 | if (sim_events_tick (sd)) |
3387 | { | |
3388 | /* cpu->cia = cia; */ | |
3389 | sim_events_process (sd); | |
3390 | } | |
50a2a691 | 3391 | #endif /* FASTSIM */ |
8bae0a0c | 3392 | } |
8bae0a0c | 3393 | } |
16bd5d6e AC |
3394 | #endif |
3395 | ||
8bae0a0c | 3396 | |
53b9417e DE |
3397 | /* This code copied from gdb's utils.c. Would like to share this code, |
3398 | but don't know of a common place where both could get to it. */ | |
3399 | ||
3400 | /* Temporary storage using circular buffer */ | |
3401 | #define NUMCELLS 16 | |
3402 | #define CELLSIZE 32 | |
3403 | static char* | |
3404 | get_cell() | |
3405 | { | |
3406 | static char buf[NUMCELLS][CELLSIZE]; | |
3407 | static int cell=0; | |
3408 | if (++cell>=NUMCELLS) cell=0; | |
3409 | return buf[cell]; | |
3410 | } | |
3411 | ||
3412 | /* Print routines to handle variable size regs, etc */ | |
3413 | ||
3414 | /* Eliminate warning from compiler on 32-bit systems */ | |
3415 | static int thirty_two = 32; | |
3416 | ||
3417 | char* | |
3418 | pr_addr(addr) | |
3419 | SIM_ADDR addr; | |
3420 | { | |
3421 | char *paddr_str=get_cell(); | |
3422 | switch (sizeof(addr)) | |
3423 | { | |
3424 | case 8: | |
50a2a691 | 3425 | sprintf(paddr_str,"%08lx%08lx", |
53b9417e DE |
3426 | (unsigned long)(addr>>thirty_two),(unsigned long)(addr&0xffffffff)); |
3427 | break; | |
3428 | case 4: | |
50a2a691 | 3429 | sprintf(paddr_str,"%08lx",(unsigned long)addr); |
53b9417e DE |
3430 | break; |
3431 | case 2: | |
3432 | sprintf(paddr_str,"%04x",(unsigned short)(addr&0xffff)); | |
3433 | break; | |
3434 | default: | |
3435 | sprintf(paddr_str,"%x",addr); | |
3436 | } | |
3437 | return paddr_str; | |
3438 | } | |
3439 | ||
87e43259 AC |
3440 | char* |
3441 | pr_uword64(addr) | |
3442 | uword64 addr; | |
3443 | { | |
3444 | char *paddr_str=get_cell(); | |
50a2a691 | 3445 | sprintf(paddr_str,"%08lx%08lx", |
87e43259 AC |
3446 | (unsigned long)(addr>>thirty_two),(unsigned long)(addr&0xffffffff)); |
3447 | return paddr_str; | |
3448 | } | |
3449 | ||
3450 | ||
8bae0a0c JSC |
3451 | /*---------------------------------------------------------------------------*/ |
3452 | /*> EOF interp.c <*/ |