25 |
* SUCH DAMAGE. |
* SUCH DAMAGE. |
26 |
* |
* |
27 |
* |
* |
28 |
* $Id: cpu.c,v 1.329 2006/01/16 04:48:08 debug Exp $ |
* $Id: cpu.c,v 1.349 2006/07/26 23:21:47 debug Exp $ |
29 |
* |
* |
30 |
* Common routines for CPU emulation. (Not specific to any CPU type.) |
* Common routines for CPU emulation. (Not specific to any CPU type.) |
31 |
*/ |
*/ |
42 |
#include "misc.h" |
#include "misc.h" |
43 |
|
|
44 |
|
|
|
extern int quiet_mode; |
|
|
extern int show_opcode_statistics; |
|
|
extern int dyntrans_backend_enable; |
|
|
|
|
45 |
static struct cpu_family *first_cpu_family = NULL; |
static struct cpu_family *first_cpu_family = NULL; |
46 |
|
|
47 |
|
|
77 |
cpu->machine = machine; |
cpu->machine = machine; |
78 |
cpu->cpu_id = cpu_id; |
cpu->cpu_id = cpu_id; |
79 |
cpu->byte_order = EMUL_LITTLE_ENDIAN; |
cpu->byte_order = EMUL_LITTLE_ENDIAN; |
|
cpu->bootstrap_cpu_flag = 0; |
|
80 |
cpu->running = 0; |
cpu->running = 0; |
81 |
|
|
82 |
cpu_create_or_reset_tc(cpu); |
cpu_create_or_reset_tc(cpu); |
93 |
"NULL\n"); |
"NULL\n"); |
94 |
exit(1); |
exit(1); |
95 |
} |
} |
96 |
return cpu; |
break; |
97 |
} |
} |
98 |
} |
} |
99 |
|
|
100 |
fp = fp->next; |
fp = fp->next; |
101 |
} |
} |
102 |
|
|
103 |
fatal("\ncpu_new(): unknown cpu type '%s'\n", cpu_type_name); |
if (fp == NULL) { |
104 |
exit(1); |
fatal("\ncpu_new(): unknown cpu type '%s'\n", cpu_type_name); |
105 |
} |
return NULL; |
106 |
|
} |
107 |
|
|
108 |
|
fp->init_tables(cpu); |
109 |
|
|
110 |
/* |
return cpu; |
|
* cpu_show_full_statistics(): |
|
|
* |
|
|
* Show detailed statistics on opcode usage on each cpu. |
|
|
*/ |
|
|
void cpu_show_full_statistics(struct machine *m) |
|
|
{ |
|
|
if (m->cpu_family == NULL || |
|
|
m->cpu_family->show_full_statistics == NULL) |
|
|
fatal("cpu_show_full_statistics(): NULL\n"); |
|
|
else |
|
|
m->cpu_family->show_full_statistics(m); |
|
111 |
} |
} |
112 |
|
|
113 |
|
|
152 |
* tracing. |
* tracing. |
153 |
*/ |
*/ |
154 |
int cpu_disassemble_instr(struct machine *m, struct cpu *cpu, |
int cpu_disassemble_instr(struct machine *m, struct cpu *cpu, |
155 |
unsigned char *instr, int running, uint64_t addr, int bintrans) |
unsigned char *instr, int running, uint64_t addr) |
156 |
{ |
{ |
157 |
if (m->cpu_family == NULL || m->cpu_family->disassemble_instr == NULL) { |
if (m->cpu_family == NULL || m->cpu_family->disassemble_instr == NULL) { |
158 |
fatal("cpu_disassemble_instr(): NULL\n"); |
fatal("cpu_disassemble_instr(): NULL\n"); |
159 |
return 0; |
return 0; |
160 |
} else |
} else |
161 |
return m->cpu_family->disassemble_instr(cpu, instr, |
return m->cpu_family->disassemble_instr(cpu, instr, |
162 |
running, addr, bintrans); |
running, addr); |
163 |
} |
} |
164 |
|
|
165 |
|
|
182 |
|
|
183 |
|
|
184 |
/* |
/* |
185 |
|
* cpu_gdb_stub(): |
186 |
|
* |
187 |
|
* Execute a "remote GDB" command. Return value is a pointer to a newly |
188 |
|
* allocated response string, if the command was successfully executed. If |
189 |
|
* there was an error, NULL is returned. |
190 |
|
*/ |
191 |
|
char *cpu_gdb_stub(struct cpu *cpu, char *cmd) |
192 |
|
{ |
193 |
|
if (cpu->machine->cpu_family == NULL || |
194 |
|
cpu->machine->cpu_family->gdb_stub == NULL) { |
195 |
|
fatal("cpu_gdb_stub(): NULL\n"); |
196 |
|
return NULL; |
197 |
|
} else |
198 |
|
return cpu->machine->cpu_family->gdb_stub(cpu, cmd); |
199 |
|
} |
200 |
|
|
201 |
|
|
202 |
|
/* |
203 |
* cpu_interrupt(): |
* cpu_interrupt(): |
204 |
* |
* |
205 |
* Assert an interrupt. |
* Assert an interrupt. |
261 |
fatal("%s", symbol); |
fatal("%s", symbol); |
262 |
else { |
else { |
263 |
if (cpu->is_32bit) |
if (cpu->is_32bit) |
264 |
fatal("0x%08x", (int)f); |
fatal("0x%"PRIx32, (uint32_t) f); |
265 |
else |
else |
266 |
fatal("0x%llx", (long long)f); |
fatal("0x%"PRIx64, (uint64_t) f); |
267 |
} |
} |
268 |
fatal("("); |
fatal("("); |
269 |
|
|
271 |
cpu->machine->cpu_family->functioncall_trace(cpu, f, n_args); |
cpu->machine->cpu_family->functioncall_trace(cpu, f, n_args); |
272 |
|
|
273 |
fatal(")>\n"); |
fatal(")>\n"); |
274 |
|
|
275 |
|
#ifdef PRINT_MEMORY_CHECKSUM |
276 |
|
/* Temporary hack for finding bugs: */ |
277 |
|
fatal("call chksum=%016"PRIx64"\n", memory_checksum(cpu->mem)); |
278 |
|
#endif |
279 |
} |
} |
280 |
|
|
281 |
|
|
306 |
{ |
{ |
307 |
size_t s = DYNTRANS_CACHE_SIZE + DYNTRANS_CACHE_MARGIN; |
size_t s = DYNTRANS_CACHE_SIZE + DYNTRANS_CACHE_MARGIN; |
308 |
|
|
309 |
if (cpu->translation_cache == NULL) { |
if (cpu->translation_cache == NULL) |
310 |
#ifdef DYNTRANS_BACKEND |
cpu->translation_cache = zeroed_alloc(s); |
|
if (dyntrans_backend_enable) { |
|
|
cpu->translation_cache = (unsigned char *) mmap(NULL, |
|
|
s, PROT_READ | PROT_WRITE | PROT_EXEC, MAP_ANON | |
|
|
MAP_PRIVATE, -1, 0); |
|
|
if (cpu->translation_cache == NULL) { |
|
|
dyntrans_backend_enable = 0; |
|
|
fatal("%\n% WARNING! Dyntrans backend disabled" |
|
|
", because mmap() failed.\n%\n"); |
|
|
} |
|
|
} |
|
|
#endif |
|
|
if (cpu->translation_cache == NULL) |
|
|
cpu->translation_cache = zeroed_alloc(s); |
|
|
} |
|
311 |
|
|
312 |
/* Create an empty table at the beginning of the translation cache: */ |
/* Create an empty table at the beginning of the translation cache: */ |
313 |
memset(cpu->translation_cache, 0, sizeof(uint32_t) |
memset(cpu->translation_cache, 0, sizeof(uint32_t) |
326 |
|
|
327 |
|
|
328 |
/* |
/* |
|
* cpu_run(): |
|
|
* |
|
|
* Run instructions on all CPUs in this machine, for a "medium duration" |
|
|
* (or until all CPUs have halted). |
|
|
* |
|
|
* Return value is 1 if anything happened, 0 if all CPUs are stopped. |
|
|
*/ |
|
|
int cpu_run(struct emul *emul, struct machine *m) |
|
|
{ |
|
|
if (m->cpu_family == NULL || m->cpu_family->run == NULL) { |
|
|
fatal("cpu_run(): NULL\n"); |
|
|
return 0; |
|
|
} else |
|
|
return m->cpu_family->run(emul, m); |
|
|
} |
|
|
|
|
|
|
|
|
/* |
|
329 |
* cpu_dumpinfo(): |
* cpu_dumpinfo(): |
330 |
* |
* |
331 |
* Dumps info about a CPU using debug(). "cpu0: CPUNAME, running" (or similar) |
* Dumps info about a CPU using debug(). "cpu0: CPUNAME, running" (or similar) |
386 |
int te; |
int te; |
387 |
|
|
388 |
/* |
/* |
389 |
* Two last ticks of every hardware device. This will allow |
* Two last ticks of every hardware device. This will allow e.g. |
390 |
* framebuffers to draw the last updates to the screen before |
* framebuffers to draw the last updates to the screen before halting. |
391 |
* halting. |
* |
392 |
|
* TODO: This should be refactored when redesigning the mainbus |
393 |
|
* concepts! |
394 |
*/ |
*/ |
395 |
for (te=0; te<machine->n_tick_entries; te++) { |
for (te=0; te<machine->n_tick_entries; te++) { |
396 |
machine->tick_func[te](machine->cpus[0], |
machine->tick_func[te](machine->cpus[0], |
399 |
machine->tick_extra[te]); |
machine->tick_extra[te]); |
400 |
} |
} |
401 |
|
|
402 |
debug("cpu_run_deinit(): All CPUs halted.\n"); |
if (machine->show_nr_of_instructions) |
|
|
|
|
if (machine->show_nr_of_instructions || !quiet_mode) |
|
403 |
cpu_show_cycles(machine, 1); |
cpu_show_cycles(machine, 1); |
404 |
|
|
|
if (show_opcode_statistics) |
|
|
cpu_show_full_statistics(machine); |
|
|
|
|
405 |
fflush(stdout); |
fflush(stdout); |
406 |
} |
} |
407 |
|
|
420 |
char *symbol; |
char *symbol; |
421 |
int64_t mseconds, ninstrs, is, avg; |
int64_t mseconds, ninstrs, is, avg; |
422 |
struct timeval tv; |
struct timeval tv; |
423 |
int h, m, s, ms, d, instrs_per_cycle = 1; |
int h, m, s, ms, d; |
424 |
|
|
425 |
static int64_t mseconds_last = 0; |
static int64_t mseconds_last = 0; |
426 |
static int64_t ninstrs_last = -1; |
static int64_t ninstrs_last = -1; |
427 |
|
|
|
switch (machine->arch) { |
|
|
case ARCH_MIPS: |
|
|
instrs_per_cycle = machine->cpus[machine->bootstrap_cpu]-> |
|
|
cd.mips.cpu_type.instrs_per_cycle; |
|
|
break; |
|
|
} |
|
|
|
|
428 |
pc = machine->cpus[machine->bootstrap_cpu]->pc; |
pc = machine->cpus[machine->bootstrap_cpu]->pc; |
429 |
|
|
430 |
gettimeofday(&tv, NULL); |
gettimeofday(&tv, NULL); |
437 |
if (mseconds - mseconds_last == 0) |
if (mseconds - mseconds_last == 0) |
438 |
mseconds ++; |
mseconds ++; |
439 |
|
|
440 |
ninstrs = machine->ncycles_since_gettimeofday * instrs_per_cycle; |
ninstrs = machine->ninstrs_since_gettimeofday; |
441 |
|
|
442 |
if (machine->automatic_clock_adjustment) { |
if (machine->automatic_clock_adjustment) { |
443 |
static int first_adjustment = 1; |
static int first_adjustment = 1; |
444 |
|
|
445 |
/* Current nr of cycles per second: */ |
/* Current nr of cycles per second: */ |
446 |
int64_t cur_cycles_per_second = 1000 * |
int64_t cur_cycles_per_second = 1000 * |
447 |
(ninstrs-ninstrs_last) / (mseconds-mseconds_last) |
(ninstrs-ninstrs_last) / (mseconds-mseconds_last); |
448 |
/ instrs_per_cycle; |
|
449 |
|
/* fatal("[ CYCLES PER SECOND = %"PRIi64" ]\n", |
450 |
|
cur_cycles_per_second); */ |
451 |
|
|
452 |
if (cur_cycles_per_second < 1000000) |
if (cur_cycles_per_second < 1000000) |
453 |
cur_cycles_per_second = 1000000; |
cur_cycles_per_second = 1000000; |
460 |
cur_cycles_per_second) / 16; |
cur_cycles_per_second) / 16; |
461 |
} |
} |
462 |
|
|
463 |
/* debug("[ updating emulated_hz to %lli Hz ]\n", |
/* fatal("[ updating emulated_hz to %"PRIi64" Hz ]\n", |
464 |
(long long)machine->emulated_hz); */ |
machine->emulated_hz); */ |
465 |
} |
} |
466 |
|
|
467 |
|
|
469 |
if (!machine->show_nr_of_instructions && !forced) |
if (!machine->show_nr_of_instructions && !forced) |
470 |
goto do_return; |
goto do_return; |
471 |
|
|
472 |
printf("[ %lli instrs", |
printf("[ %"PRIi64" instrs", (int64_t)machine->ninstrs); |
|
(long long)(machine->ncycles * instrs_per_cycle)); |
|
473 |
|
|
474 |
if (!machine->automatic_clock_adjustment) { |
if (!machine->automatic_clock_adjustment) { |
475 |
d = machine->emulated_hz / 1000; |
d = machine->emulated_hz / 1000; |
476 |
if (d < 1) |
if (d < 1) |
477 |
d = 1; |
d = 1; |
478 |
ms = machine->ncycles / d; |
ms = machine->ninstrs / d; |
479 |
h = ms / 3600000; |
h = ms / 3600000; |
480 |
ms -= 3600000 * h; |
ms -= 3600000 * h; |
481 |
m = ms / 60000; |
m = ms / 60000; |
493 |
is = 0; |
is = 0; |
494 |
if (avg < 0) |
if (avg < 0) |
495 |
avg = 0; |
avg = 0; |
496 |
printf("; i/s=%lli avg=%lli", (long long)is, (long long)avg); |
printf("; i/s=%"PRIi64" avg=%"PRIi64, is, avg); |
497 |
|
|
498 |
symbol = get_symbol_name(&machine->symbol_context, pc, &offset); |
symbol = get_symbol_name(&machine->symbol_context, pc, &offset); |
499 |
|
|
500 |
if (machine->ncpus == 1) { |
if (machine->ncpus == 1) { |
501 |
if (machine->cpus[machine->bootstrap_cpu]->is_32bit) |
if (machine->cpus[machine->bootstrap_cpu]->is_32bit) |
502 |
printf("; pc=0x%08x", (int)pc); |
printf("; pc=0x%08"PRIx32, (uint32_t) pc); |
503 |
else |
else |
504 |
printf("; pc=0x%016llx", (long long)pc); |
printf("; pc=0x%016"PRIx64, (uint64_t) pc); |
505 |
} |
} |
506 |
|
|
507 |
if (symbol != NULL) |
if (symbol != NULL) |
522 |
*/ |
*/ |
523 |
void cpu_run_init(struct machine *machine) |
void cpu_run_init(struct machine *machine) |
524 |
{ |
{ |
525 |
int ncpus = machine->ncpus; |
machine->ninstrs_flush = 0; |
526 |
int te; |
machine->ninstrs = 0; |
527 |
|
machine->ninstrs_show = 0; |
|
machine->a_few_cycles = 1048576; |
|
|
machine->ncycles_flush = 0; |
|
|
machine->ncycles = 0; |
|
|
machine->ncycles_show = 0; |
|
|
|
|
|
/* |
|
|
* Instead of doing { one cycle, check hardware ticks }, we |
|
|
* can do { n cycles, check hardware ticks }, as long as |
|
|
* n is at most as much as the lowest number of cycles/tick |
|
|
* for any hardware device. |
|
|
*/ |
|
|
for (te=0; te<machine->n_tick_entries; te++) { |
|
|
if (machine->ticks_reset_value[te] < machine->a_few_cycles) |
|
|
machine->a_few_cycles = machine->ticks_reset_value[te]; |
|
|
} |
|
|
|
|
|
machine->a_few_cycles >>= 1; |
|
|
if (machine->a_few_cycles < 1) |
|
|
machine->a_few_cycles = 1; |
|
|
|
|
|
if (ncpus > 1 && machine->max_random_cycles_per_chunk == 0) |
|
|
machine->a_few_cycles = 1; |
|
|
|
|
|
/* debug("cpu_run_init(): a_few_cycles = %i\n", |
|
|
machine->a_few_cycles); */ |
|
528 |
|
|
529 |
/* For performance measurement: */ |
/* For performance measurement: */ |
530 |
gettimeofday(&machine->starttime, NULL); |
gettimeofday(&machine->starttime, NULL); |
531 |
machine->ncycles_since_gettimeofday = 0; |
machine->ninstrs_since_gettimeofday = 0; |
532 |
} |
} |
533 |
|
|
534 |
|
|
597 |
} |
} |
598 |
|
|
599 |
|
|
|
#ifdef DYNTRANS_BACKEND |
|
|
/* |
|
|
* cpu_dtb_add_fixup(): |
|
|
* |
|
|
* Add a fixup entry to a currently ongoing dyntrans backend translation. |
|
|
*/ |
|
|
void cpu_dtb_add_fixup(struct cpu *cpu, int type, void *addr, size_t data) |
|
|
{ |
|
|
struct dtb_fixup *fixup = malloc(sizeof (struct dtb_fixup)); |
|
|
if (fixup == NULL) { |
|
|
fprintf(stderr, "out of memory\n"), |
|
|
exit(1); |
|
|
} |
|
|
|
|
|
/* memset(fixup, 0, sizeof(struct dtb_fixup)); */ |
|
|
|
|
|
fixup->next = cpu->translation_context.fixups; |
|
|
cpu->translation_context.fixups = fixup; |
|
|
|
|
|
fixup->type = type; |
|
|
fixup->addr = addr; |
|
|
fixup->data = data; |
|
|
|
|
|
/* printf("{ fixup added: host addr %p, data=%p }\n", addr, |
|
|
(void *)data); */ |
|
|
} |
|
|
|
|
|
|
|
|
/* |
|
|
* cpu_dtb_do_fixups(): |
|
|
* |
|
|
* This function should be called when a chunk of code has been translated, |
|
|
* and post-fixup is to be applied (i.e. add data which for some reason was |
|
|
* not included in the generated code). |
|
|
* |
|
|
* If no fixup is necessary for a specific host platform, then it still needs |
|
|
* an empty do_fixups routine here (just set done = 1). |
|
|
*/ |
|
|
void cpu_dtb_do_fixups(struct cpu *cpu) |
|
|
{ |
|
|
for (;;) { |
|
|
int done = 0; |
|
|
size_t omit_addr; |
|
|
|
|
|
struct dtb_fixup *fixup = cpu->translation_context.fixups; |
|
|
if (fixup == NULL) |
|
|
break; |
|
|
|
|
|
cpu->translation_context.fixups = fixup->next; |
|
|
|
|
|
#ifdef DYNTRANS_BACKEND_ALPHA |
|
|
/* Add the data at the end of the new translation: */ |
|
|
/*printf("%p %p\n", fixup->addr, fixup->data);*/ |
|
|
omit_addr = (size_t)cpu->translation_context.p - |
|
|
(size_t)cpu->translation_context.translation_buffer; |
|
|
/*printf("omit_addr = %016llx\n", (long long)omit_addr);*/ |
|
|
omit_addr = ((omit_addr - 1) | (sizeof(uint64_t) - 1)) + 1; |
|
|
/*printf("omit_addr = %016llx\n", (long long)omit_addr);*/ |
|
|
{ |
|
|
uint64_t *x = (void *)(omit_addr + (size_t)cpu-> |
|
|
translation_context.translation_buffer); |
|
|
uint32_t *fixup_instr = (void *)fixup->addr; |
|
|
size_t ofs = omit_addr; |
|
|
if (ofs > 0x7fff) { |
|
|
fatal("Alpha fixup > 0x7fff!\n"); |
|
|
exit(1); |
|
|
} |
|
|
*x = fixup->data; |
|
|
/*printf("orig instr = 0x%08x\n", *fixup_instr);*/ |
|
|
(*fixup_instr) &= ~0xffff; |
|
|
(*fixup_instr) |= ofs; |
|
|
/*printf("new instr = 0x%08x\n", *fixup_instr);*/ |
|
|
} |
|
|
omit_addr += sizeof(uint64_t); |
|
|
cpu->translation_context.p = (void *) |
|
|
((size_t)cpu->translation_context.translation_buffer |
|
|
+ omit_addr); |
|
|
done = 1; |
|
|
#endif /* DYNTRANS_BACKEND_ALPHA */ |
|
|
|
|
|
if (!done) |
|
|
fatal("!!! cpu_dtb_do_fixups() not implemented yet" |
|
|
" for this host architecture!\n"); |
|
|
} |
|
|
} |
|
|
|
|
|
#endif /* DYNTRANS_BACKEND */ |
|
|
|
|
|
|
|
600 |
/* |
/* |
601 |
* cpu_init(): |
* cpu_init(): |
602 |
* |
* |
650 |
add_cpu_family(sparc_cpu_family_init, ARCH_SPARC); |
add_cpu_family(sparc_cpu_family_init, ARCH_SPARC); |
651 |
#endif |
#endif |
652 |
|
|
653 |
|
#ifdef ENABLE_TRANSPUTER |
654 |
|
add_cpu_family(transputer_cpu_family_init, ARCH_TRANSPUTER); |
655 |
|
#endif |
656 |
|
|
657 |
#ifdef ENABLE_X86 |
#ifdef ENABLE_X86 |
658 |
add_cpu_family(x86_cpu_family_init, ARCH_X86); |
add_cpu_family(x86_cpu_family_init, ARCH_X86); |
659 |
#endif |
#endif |