/[gxemul]/trunk/src/cpu.c
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revision 10 by dpavlin, Mon Oct 8 16:18:27 2007 UTC revision 20 by dpavlin, Mon Oct 8 16:19:23 2007 UTC
# Line 25  Line 25 
25   *  SUCH DAMAGE.   *  SUCH DAMAGE.
26   *   *
27   *   *
28   *  $Id: cpu.c,v 1.298 2005/06/27 10:43:16 debug Exp $   *  $Id: cpu.c,v 1.323 2005/11/13 22:34:21 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   */   */
# Line 37  Line 37 
37    
38  #include "cpu.h"  #include "cpu.h"
39  #include "machine.h"  #include "machine.h"
40    #include "memory.h"
41  #include "misc.h"  #include "misc.h"
42    
43    
# Line 71  struct cpu *cpu_new(struct memory *mem, Line 72  struct cpu *cpu_new(struct memory *mem,
72                  exit(1);                  exit(1);
73          }          }
74    
75          cpu = malloc(sizeof(struct cpu));          cpu = zeroed_alloc(sizeof(struct cpu));
         if (cpu == NULL) {  
                 fprintf(stderr, "out of memory\n");  
                 exit(1);  
         }  
76    
         memset(cpu, 0, sizeof(struct cpu));  
77          cpu->memory_rw          = NULL;          cpu->memory_rw          = NULL;
78          cpu->name               = cpu_type_name;          cpu->name               = cpu_type_name;
79          cpu->mem                = mem;          cpu->mem                = mem;
# Line 87  struct cpu *cpu_new(struct memory *mem, Line 83  struct cpu *cpu_new(struct memory *mem,
83          cpu->bootstrap_cpu_flag = 0;          cpu->bootstrap_cpu_flag = 0;
84          cpu->running            = 0;          cpu->running            = 0;
85    
86            cpu_create_or_reset_tc(cpu);
87    
88          fp = first_cpu_family;          fp = first_cpu_family;
89    
90          while (fp != NULL) {          while (fp != NULL) {
# Line 183  int cpu_disassemble_instr(struct machine Line 181  int cpu_disassemble_instr(struct machine
181   *   *
182   *  Dump cpu registers in a relatively readable format.   *  Dump cpu registers in a relatively readable format.
183   *   *
184   *  gprs: set to non-zero to dump GPRs. (CPU dependant.)   *  gprs: set to non-zero to dump GPRs. (CPU dependent.)
185   *  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.)
186   */   */
187  void cpu_register_dump(struct machine *m, struct cpu *cpu,  void cpu_register_dump(struct machine *m, struct cpu *cpu,
188          int gprs, int coprocs)          int gprs, int coprocs)
# Line 231  int cpu_interrupt_ack(struct cpu *cpu, u Line 229  int cpu_interrupt_ack(struct cpu *cpu, u
229    
230    
231  /*  /*
232     *  cpu_functioncall_trace():
233     *
234     *  This function should be called if machine->show_trace_tree is enabled, and
235     *  a function call is being made. f contains the address of the function.
236     */
237    void cpu_functioncall_trace(struct cpu *cpu, uint64_t f)
238    {
239            int i, n_args = -1;
240            char *symbol;
241            uint64_t offset;
242    
243            if (cpu->machine->ncpus > 1)
244                    fatal("cpu%i:\t", cpu->cpu_id);
245    
246            cpu->trace_tree_depth ++;
247            if (cpu->trace_tree_depth > 100)
248                    cpu->trace_tree_depth = 100;
249            for (i=0; i<cpu->trace_tree_depth; i++)
250                    fatal("  ");
251    
252            fatal("<");
253            symbol = get_symbol_name_and_n_args(&cpu->machine->symbol_context,
254                f, &offset, &n_args);
255            if (symbol != NULL)
256                    fatal("%s", symbol);
257            else {
258                    if (cpu->is_32bit)
259                            fatal("0x%08x", (int)f);
260                    else
261                            fatal("0x%llx", (long long)f);
262            }
263            fatal("(");
264    
265            if (cpu->machine->cpu_family->functioncall_trace != NULL)
266                    cpu->machine->cpu_family->functioncall_trace(cpu, f, n_args);
267    
268            fatal(")>\n");
269    }
270    
271    
272    /*
273     *  cpu_functioncall_trace_return():
274     *
275     *  This function should be called if machine->show_trace_tree is enabled, and
276     *  a function is being returned from.
277     *
278     *  TODO: Print return value? This could be implemented similar to the
279     *  cpu->functioncall_trace function call above.
280     */
281    void cpu_functioncall_trace_return(struct cpu *cpu)
282    {
283            cpu->trace_tree_depth --;
284            if (cpu->trace_tree_depth < 0)
285                    cpu->trace_tree_depth = 0;
286    }
287    
288    
289    /*
290     *  cpu_create_or_reset_tc():
291     *
292     *  Create the translation cache in memory (ie allocate memory for it), if
293     *  necessary, and then reset it to an initial state.
294     */
295    void cpu_create_or_reset_tc(struct cpu *cpu)
296    {
297            if (cpu->translation_cache == NULL)
298                    cpu->translation_cache = zeroed_alloc(DYNTRANS_CACHE_SIZE +
299                        DYNTRANS_CACHE_MARGIN);
300    
301            /*  Create an empty table at the beginning of the translation cache:  */
302            memset(cpu->translation_cache, 0, sizeof(uint32_t)
303                * N_BASE_TABLE_ENTRIES);
304    
305            cpu->translation_cache_cur_ofs =
306                N_BASE_TABLE_ENTRIES * sizeof(uint32_t);
307    
308            /*
309             *  There might be other translation pointers that still point to
310             *  within the translation_cache region. Let's invalidate those too:
311             */
312            if (cpu->invalidate_code_translation != NULL)
313                    cpu->invalidate_code_translation(cpu, 0, INVALIDATE_ALL);
314    }
315    
316    
317    /*
318   *  cpu_run():   *  cpu_run():
319   *   *
320   *  Run instructions on all CPUs in this machine, for a "medium duration"   *  Run instructions on all CPUs in this machine, for a "medium duration"
# Line 252  int cpu_run(struct emul *emul, struct ma Line 336  int cpu_run(struct emul *emul, struct ma
336   *  cpu_dumpinfo():   *  cpu_dumpinfo():
337   *   *
338   *  Dumps info about a CPU using debug(). "cpu0: CPUNAME, running" (or similar)   *  Dumps info about a CPU using debug(). "cpu0: CPUNAME, running" (or similar)
339   *  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.
340   */   */
341  void cpu_dumpinfo(struct machine *m, struct cpu *cpu)  void cpu_dumpinfo(struct machine *m, struct cpu *cpu)
342  {  {
# Line 304  void cpu_list_available_types(void) Line 388  void cpu_list_available_types(void)
388   *  Shuts down all CPUs in a machine when ending a simulation. (This function   *  Shuts down all CPUs in a machine when ending a simulation. (This function
389   *  should only need to be called once for each machine.)   *  should only need to be called once for each machine.)
390   */   */
391  void cpu_run_deinit(struct emul *emul, struct machine *machine)  void cpu_run_deinit(struct machine *machine)
392  {  {
393          int te;          int te;
394    
# Line 343  void cpu_run_deinit(struct emul *emul, s Line 427  void cpu_run_deinit(struct emul *emul, s
427  void cpu_show_cycles(struct machine *machine, int forced)  void cpu_show_cycles(struct machine *machine, int forced)
428  {  {
429          uint64_t offset, pc;          uint64_t offset, pc;
         int is_32bit = 0, instrs_per_cycle = 1;  
430          char *symbol;          char *symbol;
431          int64_t mseconds, ninstrs;          int64_t mseconds, ninstrs, is, avg;
432          struct timeval tv;          struct timeval tv;
433          int h, m, s, ms, d;          int h, m, s, ms, d, instrs_per_cycle = 1;
434    
435          static int64_t mseconds_last = 0;          static int64_t mseconds_last = 0;
436          static int64_t ninstrs_last = -1;          static int64_t ninstrs_last = -1;
437    
438          switch (machine->arch) {          switch (machine->arch) {
439          case ARCH_MIPS:          case ARCH_MIPS:
                 if (machine->cpus[machine->bootstrap_cpu]->cd.mips.  
                     cpu_type.isa_level < 3 || machine->cpus[machine->  
                     bootstrap_cpu]->cd.mips.cpu_type.isa_level == 32)  
                         is_32bit = 1;  
440                  instrs_per_cycle = machine->cpus[machine->bootstrap_cpu]->                  instrs_per_cycle = machine->cpus[machine->bootstrap_cpu]->
441                      cd.mips.cpu_type.instrs_per_cycle;                      cd.mips.cpu_type.instrs_per_cycle;
442                  break;                  break;
         case ARCH_ARM:  
                 is_32bit = 1;  
                 break;  
443          }          }
444    
445          pc = machine->cpus[machine->bootstrap_cpu]->pc;          pc = machine->cpus[machine->bootstrap_cpu]->pc;
# Line 399  void cpu_show_cycles(struct machine *mac Line 475  void cpu_show_cycles(struct machine *mac
475                              cur_cycles_per_second) / 16;                              cur_cycles_per_second) / 16;
476                  }                  }
477    
478                  debug("[ updating emulated_hz to %lli Hz ]\n",                  /*  debug("[ updating emulated_hz to %lli Hz ]\n",
479                      (long long)machine->emulated_hz);                      (long long)machine->emulated_hz);  */
480          }          }
481    
482    
# Line 427  void cpu_show_cycles(struct machine *mac Line 503  void cpu_show_cycles(struct machine *mac
503          }          }
504    
505          /*  Instructions per second, and average so far:  */          /*  Instructions per second, and average so far:  */
506          printf("; i/s=%lli avg=%lli; ",          is = 1000 * (ninstrs-ninstrs_last) / (mseconds-mseconds_last);
507              (long long) ((long long)1000 * (ninstrs-ninstrs_last)          avg = (long long)1000 * ninstrs / mseconds;
508                  / (mseconds-mseconds_last)),          if (is < 0)
509              (long long) ((long long)1000 * ninstrs / mseconds));                  is = 0;
510            if (avg < 0)
511                    avg = 0;
512            printf("; i/s=%lli avg=%lli", (long long)is, (long long)avg);
513    
514          symbol = get_symbol_name(&machine->symbol_context, pc, &offset);          symbol = get_symbol_name(&machine->symbol_context, pc, &offset);
515    
516          if (is_32bit)          if (machine->ncpus == 1) {
517                  printf("pc=0x%08x", (int)pc);                  if (machine->cpus[machine->bootstrap_cpu]->is_32bit)
518          else                          printf("; pc=0x%08x", (int)pc);
519                  printf("pc=0x%016llx", (long long)pc);                  else
520                            printf("; pc=0x%016llx", (long long)pc);
521            }
522    
523          if (symbol != NULL)          if (symbol != NULL)
524                  printf(" <%s>", symbol);                  printf(" <%s>", symbol);
# Line 455  do_return: Line 536  do_return:
536   *  Prepare to run instructions on all CPUs in this machine. (This function   *  Prepare to run instructions on all CPUs in this machine. (This function
537   *  should only need to be called once for each machine.)   *  should only need to be called once for each machine.)
538   */   */
539  void cpu_run_init(struct emul *emul, struct machine *machine)  void cpu_run_init(struct machine *machine)
540  {  {
541          int ncpus = machine->ncpus;          int ncpus = machine->ncpus;
542          int te;          int te;
# Line 565  struct cpu_family *cpu_family_ptr_by_num Line 646  struct cpu_family *cpu_family_ptr_by_num
646  void cpu_init(void)  void cpu_init(void)
647  {  {
648          /*  Note: These are registered in alphabetic order.  */          /*  Note: These are registered in alphabetic order.  */
649    
650    #ifdef ENABLE_ALPHA
651            add_cpu_family(alpha_cpu_family_init, ARCH_ALPHA);
652    #endif
653    
654    #ifdef ENABLE_ARM
655          add_cpu_family(arm_cpu_family_init, ARCH_ARM);          add_cpu_family(arm_cpu_family_init, ARCH_ARM);
656    #endif
657    
658    #ifdef ENABLE_AVR
659            add_cpu_family(avr_cpu_family_init, ARCH_AVR);
660    #endif
661    
662    #ifdef ENABLE_HPPA
663            add_cpu_family(hppa_cpu_family_init, ARCH_HPPA);
664    #endif
665    
666    #ifdef ENABLE_I960
667            add_cpu_family(i960_cpu_family_init, ARCH_I960);
668    #endif
669    
670    #ifdef ENABLE_IA64
671            add_cpu_family(ia64_cpu_family_init, ARCH_IA64);
672    #endif
673    
674    #ifdef ENABLE_M68K
675            add_cpu_family(m68k_cpu_family_init, ARCH_M68K);
676    #endif
677    
678    #ifdef ENABLE_MIPS
679          add_cpu_family(mips_cpu_family_init, ARCH_MIPS);          add_cpu_family(mips_cpu_family_init, ARCH_MIPS);
680    #endif
681    
682    #ifdef ENABLE_NEWMIPS
683            add_cpu_family(newmips_cpu_family_init, ARCH_NEWMIPS);
684    #endif
685    
686    #ifdef ENABLE_PPC
687          add_cpu_family(ppc_cpu_family_init, ARCH_PPC);          add_cpu_family(ppc_cpu_family_init, ARCH_PPC);
688          add_cpu_family(urisc_cpu_family_init, ARCH_URISC);  #endif
689    
690    #ifdef ENABLE_SH
691            add_cpu_family(sh_cpu_family_init, ARCH_SH);
692    #endif
693    
694    #ifdef ENABLE_SPARC
695            add_cpu_family(sparc_cpu_family_init, ARCH_SPARC);
696    #endif
697    
698    #ifdef ENABLE_X86
699          add_cpu_family(x86_cpu_family_init, ARCH_X86);          add_cpu_family(x86_cpu_family_init, ARCH_X86);
700    #endif
701  }  }
702    
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