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/* |
/* |
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* Copyright (C) 2005 Anders Gavare. All rights reserved. |
* Copyright (C) 2005-2006 Anders Gavare. All rights reserved. |
3 |
* |
* |
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* Redistribution and use in source and binary forms, with or without |
* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions are met: |
* modification, are permitted provided that the following conditions are met: |
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* SUCH DAMAGE. |
* SUCH DAMAGE. |
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* |
* |
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* |
* |
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* $Id: cpu.c,v 1.321 2005/10/03 01:07:40 debug Exp $ |
* $Id: cpu.c,v 1.361 2006/10/25 09:24:05 debug Exp $ |
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* |
* |
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* Common routines for CPU emulation. (Not specific to any CPU type.) |
* Common routines for CPU emulation. (Not specific to any CPU type.) |
31 |
*/ |
*/ |
33 |
#include <stdio.h> |
#include <stdio.h> |
34 |
#include <stdlib.h> |
#include <stdlib.h> |
35 |
#include <sys/types.h> |
#include <sys/types.h> |
36 |
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#include <sys/mman.h> |
37 |
#include <string.h> |
#include <string.h> |
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#include "cpu.h" |
#include "cpu.h" |
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#include "machine.h" |
#include "machine.h" |
41 |
#include "memory.h" |
#include "memory.h" |
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#include "misc.h" |
#include "misc.h" |
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#include "settings.h" |
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extern int quiet_mode; |
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extern int show_opcode_statistics; |
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static struct cpu_family *first_cpu_family = NULL; |
static struct cpu_family *first_cpu_family = NULL; |
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* |
* |
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* Create a new cpu object. Each family is tried in sequence until a |
* Create a new cpu object. Each family is tried in sequence until a |
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* CPU family recognizes the cpu_type_name. |
* CPU family recognizes the cpu_type_name. |
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* |
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* If there was no match, NULL is returned. Otherwise, a pointer to an |
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* initialized cpu struct is returned. |
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*/ |
*/ |
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struct cpu *cpu_new(struct memory *mem, struct machine *machine, |
struct cpu *cpu_new(struct memory *mem, struct machine *machine, |
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int cpu_id, char *name) |
int cpu_id, char *name) |
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struct cpu *cpu; |
struct cpu *cpu; |
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struct cpu_family *fp; |
struct cpu_family *fp; |
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char *cpu_type_name; |
char *cpu_type_name; |
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char tmpstr[30]; |
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if (name == NULL) { |
if (name == NULL) { |
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fprintf(stderr, "cpu_new(): cpu name = NULL?\n"); |
fprintf(stderr, "cpu_new(): cpu name = NULL?\n"); |
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cpu = zeroed_alloc(sizeof(struct cpu)); |
cpu = zeroed_alloc(sizeof(struct cpu)); |
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cpu->memory_rw = NULL; |
cpu->memory_rw = NULL; |
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cpu->name = cpu_type_name; |
cpu->name = cpu_type_name; |
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cpu->mem = mem; |
cpu->mem = mem; |
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cpu->machine = machine; |
cpu->machine = machine; |
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cpu->cpu_id = cpu_id; |
cpu->cpu_id = cpu_id; |
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cpu->byte_order = EMUL_LITTLE_ENDIAN; |
cpu->byte_order = EMUL_UNDEFINED_ENDIAN; |
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cpu->bootstrap_cpu_flag = 0; |
cpu->running = 0; |
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cpu->running = 0; |
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/* Create settings, and attach to the machine: */ |
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cpu->settings = settings_new(); |
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snprintf(tmpstr, sizeof(tmpstr), "cpu[%i]", cpu_id); |
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settings_add(machine->settings, tmpstr, 1, |
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SETTINGS_TYPE_SUBSETTINGS, 0, cpu->settings); |
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settings_add(cpu->settings, "name", 0, SETTINGS_TYPE_STRING, |
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SETTINGS_FORMAT_STRING, (void *) &cpu->name); |
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settings_add(cpu->settings, "running", 0, SETTINGS_TYPE_INT, |
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SETTINGS_FORMAT_YESNO, (void *) &cpu->running); |
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cpu_create_or_reset_tc(cpu); |
cpu_create_or_reset_tc(cpu); |
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"NULL\n"); |
"NULL\n"); |
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exit(1); |
exit(1); |
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} |
} |
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return cpu; |
break; |
113 |
} |
} |
114 |
} |
} |
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fp = fp->next; |
fp = fp->next; |
117 |
} |
} |
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fatal("\ncpu_new(): unknown cpu type '%s'\n", cpu_type_name); |
if (fp == NULL) { |
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exit(1); |
fatal("\ncpu_new(): unknown cpu type '%s'\n", cpu_type_name); |
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return NULL; |
122 |
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} |
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124 |
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fp->init_tables(cpu); |
125 |
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if (cpu->byte_order == EMUL_UNDEFINED_ENDIAN) { |
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fatal("\ncpu_new(): Internal bug: Endianness not set.\n"); |
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exit(1); |
129 |
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} |
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return cpu; |
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} |
} |
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/* |
/* |
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* cpu_show_full_statistics(): |
* cpu_destroy(): |
137 |
* |
* |
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* Show detailed statistics on opcode usage on each cpu. |
* Destroy a cpu object. |
139 |
*/ |
*/ |
140 |
void cpu_show_full_statistics(struct machine *m) |
void cpu_destroy(struct cpu *cpu) |
141 |
{ |
{ |
142 |
if (m->cpu_family == NULL || |
settings_remove(cpu->settings, "name"); |
143 |
m->cpu_family->show_full_statistics == NULL) |
settings_remove(cpu->settings, "running"); |
144 |
fatal("cpu_show_full_statistics(): NULL\n"); |
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145 |
else |
/* Remove any remaining level-1 settings: */ |
146 |
m->cpu_family->show_full_statistics(m); |
settings_remove_all(cpu->settings); |
147 |
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148 |
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settings_destroy(cpu->settings); |
149 |
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150 |
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/* TODO: This assumes that zeroed_alloc() actually succeeded |
151 |
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with using mmap(), and not malloc()! */ |
152 |
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munmap((void *)cpu, sizeof(struct cpu)); |
153 |
} |
} |
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155 |
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172 |
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173 |
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174 |
/* |
/* |
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* cpu_register_match(): |
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* |
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* Used by the debugger. |
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*/ |
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void cpu_register_match(struct machine *m, char *name, |
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int writeflag, uint64_t *valuep, int *match_register) |
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{ |
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if (m->cpu_family == NULL || m->cpu_family->register_match == NULL) |
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fatal("cpu_register_match(): NULL\n"); |
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else |
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m->cpu_family->register_match(m, name, writeflag, |
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valuep, match_register); |
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} |
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/* |
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175 |
* cpu_disassemble_instr(): |
* cpu_disassemble_instr(): |
176 |
* |
* |
177 |
* Convert an instruction word into human readable format, for instruction |
* Convert an instruction word into human readable format, for instruction |
178 |
* tracing. |
* tracing. |
179 |
*/ |
*/ |
180 |
int cpu_disassemble_instr(struct machine *m, struct cpu *cpu, |
int cpu_disassemble_instr(struct machine *m, struct cpu *cpu, |
181 |
unsigned char *instr, int running, uint64_t addr, int bintrans) |
unsigned char *instr, int running, uint64_t addr) |
182 |
{ |
{ |
183 |
if (m->cpu_family == NULL || m->cpu_family->disassemble_instr == NULL) { |
if (m->cpu_family == NULL || m->cpu_family->disassemble_instr == NULL) { |
184 |
fatal("cpu_disassemble_instr(): NULL\n"); |
fatal("cpu_disassemble_instr(): NULL\n"); |
185 |
return 0; |
return 0; |
186 |
} else |
} else |
187 |
return m->cpu_family->disassemble_instr(cpu, instr, |
return m->cpu_family->disassemble_instr(cpu, instr, |
188 |
running, addr, bintrans); |
running, addr); |
189 |
} |
} |
190 |
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191 |
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194 |
* |
* |
195 |
* Dump cpu registers in a relatively readable format. |
* Dump cpu registers in a relatively readable format. |
196 |
* |
* |
197 |
* gprs: set to non-zero to dump GPRs. (CPU dependant.) |
* gprs: set to non-zero to dump GPRs. (CPU dependent.) |
198 |
* coprocs: set bit 0..x to dump registers in coproc 0..x. (CPU dependant.) |
* coprocs: set bit 0..x to dump registers in coproc 0..x. (CPU dependent.) |
199 |
*/ |
*/ |
200 |
void cpu_register_dump(struct machine *m, struct cpu *cpu, |
void cpu_register_dump(struct machine *m, struct cpu *cpu, |
201 |
int gprs, int coprocs) |
int gprs, int coprocs) |
208 |
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209 |
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210 |
/* |
/* |
211 |
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* cpu_gdb_stub(): |
212 |
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* |
213 |
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* Execute a "remote GDB" command. Return value is a pointer to a newly |
214 |
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* allocated response string, if the command was successfully executed. If |
215 |
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* there was an error, NULL is returned. |
216 |
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*/ |
217 |
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char *cpu_gdb_stub(struct cpu *cpu, char *cmd) |
218 |
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{ |
219 |
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if (cpu->machine->cpu_family == NULL || |
220 |
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cpu->machine->cpu_family->gdb_stub == NULL) { |
221 |
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fatal("cpu_gdb_stub(): NULL\n"); |
222 |
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return NULL; |
223 |
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} else |
224 |
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return cpu->machine->cpu_family->gdb_stub(cpu, cmd); |
225 |
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} |
226 |
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227 |
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228 |
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/* |
229 |
* cpu_interrupt(): |
* cpu_interrupt(): |
230 |
* |
* |
231 |
* Assert an interrupt. |
* Assert an interrupt. |
287 |
fatal("%s", symbol); |
fatal("%s", symbol); |
288 |
else { |
else { |
289 |
if (cpu->is_32bit) |
if (cpu->is_32bit) |
290 |
fatal("0x%08x", (int)f); |
fatal("0x%"PRIx32, (uint32_t) f); |
291 |
else |
else |
292 |
fatal("0x%llx", (long long)f); |
fatal("0x%"PRIx64, (uint64_t) f); |
293 |
} |
} |
294 |
fatal("("); |
fatal("("); |
295 |
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297 |
cpu->machine->cpu_family->functioncall_trace(cpu, f, n_args); |
cpu->machine->cpu_family->functioncall_trace(cpu, f, n_args); |
298 |
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299 |
fatal(")>\n"); |
fatal(")>\n"); |
300 |
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301 |
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#ifdef PRINT_MEMORY_CHECKSUM |
302 |
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/* Temporary hack for finding bugs: */ |
303 |
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fatal("call chksum=%016"PRIx64"\n", memory_checksum(cpu->mem)); |
304 |
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#endif |
305 |
} |
} |
306 |
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307 |
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330 |
*/ |
*/ |
331 |
void cpu_create_or_reset_tc(struct cpu *cpu) |
void cpu_create_or_reset_tc(struct cpu *cpu) |
332 |
{ |
{ |
333 |
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size_t s = DYNTRANS_CACHE_SIZE + DYNTRANS_CACHE_MARGIN; |
334 |
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335 |
if (cpu->translation_cache == NULL) |
if (cpu->translation_cache == NULL) |
336 |
cpu->translation_cache = zeroed_alloc(DYNTRANS_CACHE_SIZE + |
cpu->translation_cache = zeroed_alloc(s); |
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DYNTRANS_CACHE_MARGIN); |
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337 |
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338 |
/* Create an empty table at the beginning of the translation cache: */ |
/* Create an empty table at the beginning of the translation cache: */ |
339 |
memset(cpu->translation_cache, 0, sizeof(uint32_t) |
memset(cpu->translation_cache, 0, sizeof(uint32_t) |
352 |
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353 |
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354 |
/* |
/* |
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* cpu_run(): |
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* |
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* Run instructions on all CPUs in this machine, for a "medium duration" |
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* (or until all CPUs have halted). |
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* |
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* Return value is 1 if anything happened, 0 if all CPUs are stopped. |
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*/ |
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int cpu_run(struct emul *emul, struct machine *m) |
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{ |
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if (m->cpu_family == NULL || m->cpu_family->run == NULL) { |
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fatal("cpu_run(): NULL\n"); |
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return 0; |
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} else |
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return m->cpu_family->run(emul, m); |
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} |
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/* |
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355 |
* cpu_dumpinfo(): |
* cpu_dumpinfo(): |
356 |
* |
* |
357 |
* Dumps info about a CPU using debug(). "cpu0: CPUNAME, running" (or similar) |
* Dumps info about a CPU using debug(). "cpu0: CPUNAME, running" (or similar) |
358 |
* is outputed, and it is up to CPU dependant code to complete the line. |
* is outputed, and it is up to CPU dependent code to complete the line. |
359 |
*/ |
*/ |
360 |
void cpu_dumpinfo(struct machine *m, struct cpu *cpu) |
void cpu_dumpinfo(struct machine *m, struct cpu *cpu) |
361 |
{ |
{ |
377 |
void cpu_list_available_types(void) |
void cpu_list_available_types(void) |
378 |
{ |
{ |
379 |
struct cpu_family *fp; |
struct cpu_family *fp; |
380 |
int iadd = 4; |
int iadd = DEBUG_INDENTATION; |
381 |
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382 |
fp = first_cpu_family; |
fp = first_cpu_family; |
383 |
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412 |
int te; |
int te; |
413 |
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414 |
/* |
/* |
415 |
* Two last ticks of every hardware device. This will allow |
* Two last ticks of every hardware device. This will allow e.g. |
416 |
* framebuffers to draw the last updates to the screen before |
* framebuffers to draw the last updates to the screen before halting. |
417 |
* halting. |
* |
418 |
|
* TODO: This should be refactored when redesigning the mainbus |
419 |
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* concepts! |
420 |
*/ |
*/ |
421 |
for (te=0; te<machine->n_tick_entries; te++) { |
for (te=0; te<machine->n_tick_entries; te++) { |
422 |
machine->tick_func[te](machine->cpus[0], |
machine->tick_func[te](machine->cpus[0], |
425 |
machine->tick_extra[te]); |
machine->tick_extra[te]); |
426 |
} |
} |
427 |
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428 |
debug("cpu_run_deinit(): All CPUs halted.\n"); |
if (machine->show_nr_of_instructions) |
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if (machine->show_nr_of_instructions || !quiet_mode) |
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429 |
cpu_show_cycles(machine, 1); |
cpu_show_cycles(machine, 1); |
430 |
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if (show_opcode_statistics) |
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cpu_show_full_statistics(machine); |
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431 |
fflush(stdout); |
fflush(stdout); |
432 |
} |
} |
433 |
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435 |
/* |
/* |
436 |
* cpu_show_cycles(): |
* cpu_show_cycles(): |
437 |
* |
* |
438 |
* If automatic adjustment of clock interrupts is turned on, then recalculate |
* If show_nr_of_instructions is on, then print a line to stdout about how |
439 |
* emulated_hz. Also, if show_nr_of_instructions is on, then print a |
* many instructions/cycles have been executed so far. |
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* line to stdout about how many instructions/cycles have been executed so |
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* far. |
|
440 |
*/ |
*/ |
441 |
void cpu_show_cycles(struct machine *machine, int forced) |
void cpu_show_cycles(struct machine *machine, int forced) |
442 |
{ |
{ |
444 |
char *symbol; |
char *symbol; |
445 |
int64_t mseconds, ninstrs, is, avg; |
int64_t mseconds, ninstrs, is, avg; |
446 |
struct timeval tv; |
struct timeval tv; |
447 |
int h, m, s, ms, d, instrs_per_cycle = 1; |
struct cpu *cpu = machine->cpus[machine->bootstrap_cpu]; |
448 |
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449 |
static int64_t mseconds_last = 0; |
static int64_t mseconds_last = 0; |
450 |
static int64_t ninstrs_last = -1; |
static int64_t ninstrs_last = -1; |
451 |
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452 |
switch (machine->arch) { |
pc = cpu->pc; |
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case ARCH_MIPS: |
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instrs_per_cycle = machine->cpus[machine->bootstrap_cpu]-> |
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cd.mips.cpu_type.instrs_per_cycle; |
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break; |
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} |
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pc = machine->cpus[machine->bootstrap_cpu]->pc; |
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453 |
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454 |
gettimeofday(&tv, NULL); |
gettimeofday(&tv, NULL); |
455 |
mseconds = (tv.tv_sec - machine->starttime.tv_sec) * 1000 |
mseconds = (tv.tv_sec - machine->starttime.tv_sec) * 1000 |
461 |
if (mseconds - mseconds_last == 0) |
if (mseconds - mseconds_last == 0) |
462 |
mseconds ++; |
mseconds ++; |
463 |
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464 |
ninstrs = machine->ncycles_since_gettimeofday * instrs_per_cycle; |
ninstrs = machine->ninstrs_since_gettimeofday; |
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if (machine->automatic_clock_adjustment) { |
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static int first_adjustment = 1; |
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/* Current nr of cycles per second: */ |
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int64_t cur_cycles_per_second = 1000 * |
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(ninstrs-ninstrs_last) / (mseconds-mseconds_last) |
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/ instrs_per_cycle; |
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if (cur_cycles_per_second < 1000000) |
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cur_cycles_per_second = 1000000; |
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if (first_adjustment) { |
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machine->emulated_hz = cur_cycles_per_second; |
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first_adjustment = 0; |
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} else { |
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machine->emulated_hz = (15 * machine->emulated_hz + |
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cur_cycles_per_second) / 16; |
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} |
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/* debug("[ updating emulated_hz to %lli Hz ]\n", |
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(long long)machine->emulated_hz); */ |
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} |
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465 |
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466 |
/* RETURN here, unless show_nr_of_instructions (-N) is turned on: */ |
/* RETURN here, unless show_nr_of_instructions (-N) is turned on: */ |
467 |
if (!machine->show_nr_of_instructions && !forced) |
if (!machine->show_nr_of_instructions && !forced) |
468 |
goto do_return; |
goto do_return; |
469 |
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470 |
printf("[ %lli instrs", |
printf("[ %"PRIi64" instrs", (int64_t)machine->ninstrs); |
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(long long)(machine->ncycles * instrs_per_cycle)); |
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if (!machine->automatic_clock_adjustment) { |
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d = machine->emulated_hz / 1000; |
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if (d < 1) |
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d = 1; |
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ms = machine->ncycles / d; |
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h = ms / 3600000; |
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ms -= 3600000 * h; |
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m = ms / 60000; |
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ms -= 60000 * m; |
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s = ms / 1000; |
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ms -= 1000 * s; |
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printf("emulated time = %02i:%02i:%02i.%03i; ", h, m, s, ms); |
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} |
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471 |
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472 |
/* Instructions per second, and average so far: */ |
/* Instructions per second, and average so far: */ |
473 |
is = 1000 * (ninstrs-ninstrs_last) / (mseconds-mseconds_last); |
is = 1000 * (ninstrs-ninstrs_last) / (mseconds-mseconds_last); |
476 |
is = 0; |
is = 0; |
477 |
if (avg < 0) |
if (avg < 0) |
478 |
avg = 0; |
avg = 0; |
479 |
printf("; i/s=%lli avg=%lli", (long long)is, (long long)avg); |
|
480 |
|
if (cpu->has_been_idling) { |
481 |
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printf("; idling"); |
482 |
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cpu->has_been_idling = 0; |
483 |
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} else |
484 |
|
printf("; i/s=%"PRIi64" avg=%"PRIi64, is, avg); |
485 |
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|
486 |
symbol = get_symbol_name(&machine->symbol_context, pc, &offset); |
symbol = get_symbol_name(&machine->symbol_context, pc, &offset); |
487 |
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|
488 |
if (machine->ncpus == 1) { |
if (machine->ncpus == 1) { |
489 |
if (machine->cpus[machine->bootstrap_cpu]->is_32bit) |
if (cpu->is_32bit) |
490 |
printf("; pc=0x%08x", (int)pc); |
printf("; pc=0x%08"PRIx32, (uint32_t) pc); |
491 |
else |
else |
492 |
printf("; pc=0x%016llx", (long long)pc); |
printf("; pc=0x%016"PRIx64, (uint64_t) pc); |
493 |
} |
} |
494 |
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|
495 |
if (symbol != NULL) |
if (symbol != NULL) |
510 |
*/ |
*/ |
511 |
void cpu_run_init(struct machine *machine) |
void cpu_run_init(struct machine *machine) |
512 |
{ |
{ |
513 |
int ncpus = machine->ncpus; |
machine->ninstrs_flush = 0; |
514 |
int te; |
machine->ninstrs = 0; |
515 |
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machine->ninstrs_show = 0; |
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machine->a_few_cycles = 1048576; |
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machine->ncycles_flush = 0; |
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machine->ncycles = 0; |
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machine->ncycles_show = 0; |
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|
|
/* |
|
|
* 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); */ |
|
516 |
|
|
517 |
/* For performance measurement: */ |
/* For performance measurement: */ |
518 |
gettimeofday(&machine->starttime, NULL); |
gettimeofday(&machine->starttime, NULL); |
519 |
machine->ncycles_since_gettimeofday = 0; |
machine->ninstrs_since_gettimeofday = 0; |
520 |
} |
} |
521 |
|
|
522 |
|
|
589 |
* cpu_init(): |
* cpu_init(): |
590 |
* |
* |
591 |
* Should be called before any other cpu_*() function. |
* Should be called before any other cpu_*() function. |
592 |
|
* |
593 |
|
* TODO: Make this nicer by moving out the conditional stuff to |
594 |
|
* an automagically generated file? Or a define in config.h? |
595 |
*/ |
*/ |
596 |
void cpu_init(void) |
void cpu_init(void) |
597 |
{ |
{ |
609 |
add_cpu_family(avr_cpu_family_init, ARCH_AVR); |
add_cpu_family(avr_cpu_family_init, ARCH_AVR); |
610 |
#endif |
#endif |
611 |
|
|
612 |
|
#ifdef ENABLE_AVR32 |
613 |
|
add_cpu_family(avr32_cpu_family_init, ARCH_AVR32); |
614 |
|
#endif |
615 |
|
|
616 |
|
#ifdef ENABLE_RCA180X |
617 |
|
add_cpu_family(rca180x_cpu_family_init, ARCH_RCA180X); |
618 |
|
#endif |
619 |
|
|
620 |
#ifdef ENABLE_HPPA |
#ifdef ENABLE_HPPA |
621 |
add_cpu_family(hppa_cpu_family_init, ARCH_HPPA); |
add_cpu_family(hppa_cpu_family_init, ARCH_HPPA); |
622 |
#endif |
#endif |
649 |
add_cpu_family(sparc_cpu_family_init, ARCH_SPARC); |
add_cpu_family(sparc_cpu_family_init, ARCH_SPARC); |
650 |
#endif |
#endif |
651 |
|
|
652 |
|
#ifdef ENABLE_TRANSPUTER |
653 |
|
add_cpu_family(transputer_cpu_family_init, ARCH_TRANSPUTER); |
654 |
|
#endif |
655 |
|
|
656 |
#ifdef ENABLE_X86 |
#ifdef ENABLE_X86 |
657 |
add_cpu_family(x86_cpu_family_init, ARCH_X86); |
add_cpu_family(x86_cpu_family_init, ARCH_X86); |
658 |
#endif |
#endif |