/[gxemul]/trunk/src/include/cpu.h
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revision 24 by dpavlin, Mon Oct 8 16:19:56 2007 UTC revision 34 by dpavlin, Mon Oct 8 16:21:17 2007 UTC
# Line 2  Line 2 
2  #define CPU_H  #define CPU_H
3    
4  /*  /*
5   *  Copyright (C) 2005-2006  Anders Gavare.  All rights reserved.   *  Copyright (C) 2005-2007  Anders Gavare.  All rights reserved.
6   *   *
7   *  Redistribution and use in source and binary forms, with or without   *  Redistribution and use in source and binary forms, with or without
8   *  modification, are permitted provided that the following conditions are met:   *  modification, are permitted provided that the following conditions are met:
# Line 28  Line 28 
28   *  SUCH DAMAGE.   *  SUCH DAMAGE.
29   *   *
30   *   *
31   *  $Id: cpu.h,v 1.75 2006/06/16 18:31:26 debug Exp $   *  $Id: cpu.h,v 1.109 2007/02/10 14:29:54 debug Exp $
32   *   *
33   *  CPU-related definitions.   *  CPU-related definitions.
34   */   */
# Line 54  Line 54 
54   *  instruction can "nullify" (skip) the delay-slot. If the end-of-page   *  instruction can "nullify" (skip) the delay-slot. If the end-of-page
55   *  slot is skipped, then we end up one step after that. That's where the   *  slot is skipped, then we end up one step after that. That's where the
56   *  end_of_page2 slot is. :)   *  end_of_page2 slot is. :)
57     *
58     *  next_ofs points to the next page in a chain of possible pages.
59     *  (several pages can be in the same chain, but only one matches the
60     *  specific physaddr.)
61     *
62     *  translations is a tiny bitmap indicating which parts of the page have
63     *  actual translations. Bit 0 corresponds to the lowest 1/32th of the page,
64     *  bit 1 to the second-lowest 1/32th, and so on.
65   */   */
66  #define DYNTRANS_MISC_DECLARATIONS(arch,ARCH,addrtype)  struct \  #define DYNTRANS_MISC_DECLARATIONS(arch,ARCH,addrtype)  struct \
67          arch ## _instr_call {                                   \          arch ## _instr_call {                                   \
# Line 65  Line 73 
73          struct arch ## _tc_physpage {                                   \          struct arch ## _tc_physpage {                                   \
74                  struct arch ## _instr_call ics[ARCH ## _IC_ENTRIES_PER_PAGE+2];\                  struct arch ## _instr_call ics[ARCH ## _IC_ENTRIES_PER_PAGE+2];\
75                  uint32_t        next_ofs;       /*  (0 for end of chain)  */ \                  uint32_t        next_ofs;       /*  (0 for end of chain)  */ \
76                  int             flags;                                  \                  uint32_t        translations;                           \
77                  addrtype        physaddr;                               \                  addrtype        physaddr;                               \
78          };                                                              \          };                                                              \
79                                                                          \                                                                          \
# Line 75  Line 83 
83                  addrtype        vaddr_page;                             \                  addrtype        vaddr_page;                             \
84                  addrtype        paddr_page;                             \                  addrtype        paddr_page;                             \
85                  unsigned char   *host_page;                             \                  unsigned char   *host_page;                             \
                 int64_t         timestamp;                              \  
86          };          };
87    
88  #define DYNTRANS_MISC64_DECLARATIONS(arch,ARCH,tlbindextype)            \  #define DYNTRANS_MISC64_DECLARATIONS(arch,ARCH,tlbindextype)            \
# Line 114  Line 121 
121  #define DYNTRANS_ITC(arch)      struct arch ## _tc_physpage *cur_physpage;  \  #define DYNTRANS_ITC(arch)      struct arch ## _tc_physpage *cur_physpage;  \
122                                  struct arch ## _instr_call  *cur_ic_page;   \                                  struct arch ## _instr_call  *cur_ic_page;   \
123                                  struct arch ## _instr_call  *next_ic;       \                                  struct arch ## _instr_call  *next_ic;       \
124                                    struct arch ## _tc_physpage *physpage_template;\
125                                  void (*combination_check)(struct cpu *,     \                                  void (*combination_check)(struct cpu *,     \
126                                      struct arch ## _instr_call *, int low_addr);                                      struct arch ## _instr_call *, int low_addr);
127    
# Line 147  Line 155 
155   *   *
156   *  phys_page points to translation cache physpages.   *  phys_page points to translation cache physpages.
157   *   *
  *  phystranslation is a bitmap which tells us whether a physical page has  
  *  a code translation.  
  *  
158   *  vaddr_to_tlbindex is a virtual address to tlb index hint table.   *  vaddr_to_tlbindex is a virtual address to tlb index hint table.
159   *  The values in this array are the tlb index plus 1, so a value of, say,   *  The values in this array are the tlb index plus 1, so a value of, say,
160   *  3 means tlb index 2. A value of 0 would mean a tlb index of -1, which   *  3 means tlb index 2. A value of 0 would mean a tlb index of -1, which
# Line 161  Line 166 
166          unsigned char           *host_store[N_VPH32_ENTRIES];           \          unsigned char           *host_store[N_VPH32_ENTRIES];           \
167          paddrtype               phys_addr[N_VPH32_ENTRIES];             \          paddrtype               phys_addr[N_VPH32_ENTRIES];             \
168          struct arch ## _tc_physpage  *phys_page[N_VPH32_ENTRIES];       \          struct arch ## _tc_physpage  *phys_page[N_VPH32_ENTRIES];       \
         uint32_t                phystranslation[N_VPH32_ENTRIES/32];    \  
169          tlbindextype            vaddr_to_tlbindex[N_VPH32_ENTRIES];          tlbindextype            vaddr_to_tlbindex[N_VPH32_ENTRIES];
170    
171  /*  /*
# Line 190  Line 194 
194  #include "cpu_alpha.h"  #include "cpu_alpha.h"
195  #include "cpu_arm.h"  #include "cpu_arm.h"
196  #include "cpu_avr.h"  #include "cpu_avr.h"
 #include "cpu_hppa.h"  
 #include "cpu_i960.h"  
 #include "cpu_ia64.h"  
197  #include "cpu_m68k.h"  #include "cpu_m68k.h"
198  #include "cpu_mips.h"  #include "cpu_mips.h"
199  #include "cpu_ppc.h"  #include "cpu_ppc.h"
200    #include "cpu_rca180x.h"
201  #include "cpu_sh.h"  #include "cpu_sh.h"
202  #include "cpu_sparc.h"  #include "cpu_sparc.h"
203  #include "cpu_x86.h"  #include "cpu_transputer.h"
204    
205  struct cpu;  struct cpu;
206  struct emul;  struct emul;
207  struct machine;  struct machine;
208  struct memory;  struct memory;
209    struct settings;
210    
211    
212    /*
213     *  cpu_family
214     *  ----------
215     *
216     *  This structure consists of various pointers to functions, performing
217     *  architecture-specific functions.
218     *
219     *  Except for the next and arch fields at the top, all fields in the
220     *  cpu_family struct are filled in by ecah CPU family's init function.
221     */
222  struct cpu_family {  struct cpu_family {
223          struct cpu_family       *next;          struct cpu_family       *next;
224          int                     arch;          int                     arch;
225    
226          /*  These are filled in by each CPU family's init function:  */          /*  Familty name, e.g. "MIPS", "Alpha" etc.  */
227          char                    *name;          char                    *name;
228    
229            /*  Fill in architecture specific parts of a struct cpu.  */
230          int                     (*cpu_new)(struct cpu *cpu, struct memory *mem,          int                     (*cpu_new)(struct cpu *cpu, struct memory *mem,
231                                      struct machine *machine,                                      struct machine *machine,
232                                      int cpu_id, char *cpu_type_name);                                      int cpu_id, char *cpu_type_name);
233    
234            /*  Initialize various translation tables.  */
235            void                    (*init_tables)(struct cpu *cpu);
236    
237            /*  List available CPU types for this architecture.  */
238          void                    (*list_available_types)(void);          void                    (*list_available_types)(void);
239          void                    (*register_match)(struct machine *m,  
240                                      char *name, int writeflag,          /*  Disassemble an instruction.  */
                                     uint64_t *valuep, int *match_register);  
241          int                     (*disassemble_instr)(struct cpu *cpu,          int                     (*disassemble_instr)(struct cpu *cpu,
242                                      unsigned char *instr, int running,                                      unsigned char *instr, int running,
243                                      uint64_t dumpaddr);                                      uint64_t dumpaddr);
244    
245            /*  Dump CPU registers in readable format.  */
246          void                    (*register_dump)(struct cpu *cpu,          void                    (*register_dump)(struct cpu *cpu,
247                                      int gprs, int coprocs);                                      int gprs, int coprocs);
248          int                     (*run)(struct emul *emul,  
249                                      struct machine *machine);          /*  Dump generic CPU info in readable format.  */
250          void                    (*dumpinfo)(struct cpu *cpu);          void                    (*dumpinfo)(struct cpu *cpu);
251    
252            /*  Dump TLB data for CPU id x.  */
253          void                    (*tlbdump)(struct machine *m, int x,          void                    (*tlbdump)(struct machine *m, int x,
254                                      int rawflag);                                      int rawflag);
255          int                     (*interrupt)(struct cpu *cpu, uint64_t irq_nr);  
256          int                     (*interrupt_ack)(struct cpu *cpu,          /*  Print architecture-specific function call arguments.
257                                      uint64_t irq_nr);              (This is called for each function call, if running with -t.)  */
258          void                    (*functioncall_trace)(struct cpu *,          void                    (*functioncall_trace)(struct cpu *,
259                                      uint64_t f, int n_args);                                      uint64_t f, int n_args);
260    
261            /*  GDB command handler.  */
262          char                    *(*gdb_stub)(struct cpu *, char *cmd);          char                    *(*gdb_stub)(struct cpu *, char *cmd);
263  };  };
264    
# Line 245  struct cpu_family { Line 270  struct cpu_family {
270   *  into the cache, for possible translation cache structs for physical pages.   *  into the cache, for possible translation cache structs for physical pages.
271   */   */
272    
 /*  Physpage flags:  */  
 #define TRANSLATIONS                    1  
 #define COMBINATIONS                    2  
   
273  /*  Meaning of delay_slot:  */  /*  Meaning of delay_slot:  */
274  #define NOT_DELAYED                     0  #define NOT_DELAYED                     0
275  #define DELAYED                         1  #define DELAYED                         1
276  #define TO_BE_DELAYED                   2  #define TO_BE_DELAYED                   2
277  #define EXCEPTION_IN_DELAY_SLOT         0x100  #define EXCEPTION_IN_DELAY_SLOT         8
278    
279  #define N_SAFE_DYNTRANS_LIMIT_SHIFT     14  #define N_SAFE_DYNTRANS_LIMIT_SHIFT     14
280  #define N_SAFE_DYNTRANS_LIMIT   ((1 << (N_SAFE_DYNTRANS_LIMIT_SHIFT - 1)) - 1)  #define N_SAFE_DYNTRANS_LIMIT   ((1 << (N_SAFE_DYNTRANS_LIMIT_SHIFT - 1)) - 1)
281    
282  #define DYNTRANS_CACHE_SIZE             (16*1048576)  #define DEFAULT_DYNTRANS_CACHE_SIZE     (40*1048576)
283  #define DYNTRANS_CACHE_MARGIN           300000  #define DYNTRANS_CACHE_MARGIN           200000
284    
285  #define N_BASE_TABLE_ENTRIES            32768  #define N_BASE_TABLE_ENTRIES            32768
286  #define PAGENR_TO_TABLE_INDEX(a)        ((a) & (N_BASE_TABLE_ENTRIES-1))  #define PAGENR_TO_TABLE_INDEX(a)        ((a) & (N_BASE_TABLE_ENTRIES-1))
# Line 273  struct cpu { Line 294  struct cpu {
294          /*  Pointer back to the machine this CPU is in:  */          /*  Pointer back to the machine this CPU is in:  */
295          struct machine  *machine;          struct machine  *machine;
296    
297            /*  Settings:  */
298            struct settings *settings;
299    
300            /*  CPU-specific name, e.g. "R2000", "21164PC", etc.  */
301            char            *name;
302    
303            /*  Full "path" to the CPU, e.g. "emul[0].machine[0].cpu[0]":  */
304            char            *path;
305    
306            /*  EMUL_LITTLE_ENDIAN or EMUL_BIG_ENDIAN.  */
307          int             byte_order;          int             byte_order;
308          int             running;  
309          int             dead;          /*  0-based CPU id, in an emulated SMP system.  */
         int             bootstrap_cpu_flag;  
310          int             cpu_id;          int             cpu_id;
         int             is_32bit;       /*  0 for 64-bit, 1 for 32-bit  */  
         char            *name;  
311    
312            /*  0 for emulated 64-bit CPUs, 1 for 32-bit.  */
313            int             is_32bit;
314    
315            /*  1 while running, 0 when paused/stopped.  */
316            int             running;
317    
318            /*  A pointer to the main memory connected to this CPU.  */
319          struct memory   *mem;          struct memory   *mem;
320    
321            int             (*run_instr)(struct cpu *cpu);
322          int             (*memory_rw)(struct cpu *cpu,          int             (*memory_rw)(struct cpu *cpu,
323                              struct memory *mem, uint64_t vaddr,                              struct memory *mem, uint64_t vaddr,
324                              unsigned char *data, size_t len,                              unsigned char *data, size_t len,
325                              int writeflag, int cache_flags);                              int writeflag, int cache_flags);
326          int             (*translate_address)(struct cpu *, uint64_t vaddr,          int             (*translate_v2p)(struct cpu *, uint64_t vaddr,
327                              uint64_t *return_addr, int flags);                              uint64_t *return_paddr, int flags);
328          void            (*update_translation_table)(struct cpu *,          void            (*update_translation_table)(struct cpu *,
329                              uint64_t vaddr_page, unsigned char *host_page,                              uint64_t vaddr_page, unsigned char *host_page,
330                              int writeflag, uint64_t paddr_page);                              int writeflag, uint64_t paddr_page);
# Line 299  struct cpu { Line 336  struct cpu {
336          int             (*instruction_has_delayslot)(struct cpu *cpu,          int             (*instruction_has_delayslot)(struct cpu *cpu,
337                              unsigned char *ib);                              unsigned char *ib);
338    
339            /*  The program counter. (For 32-bit modes, not all bits are used.)  */
340          uint64_t        pc;          uint64_t        pc;
341    
342            /*  See comment further up.  */
343            int             delay_slot;
344    
345            /*  The current depth of function call tracing.  */
346          int             trace_tree_depth;          int             trace_tree_depth;
347    
348          /*          /*
349             *  If is_halted is true when an interrupt trap occurs, the pointer
350             *  to the next instruction to execute will be the instruction
351             *  following the halt instruction, not the halt instrucion itself.
352             *
353             *  If has_been_idling is true when printing the number of executed
354             *  instructions per second, "idling" is printed instead. (The number
355             *  of instrs per second when idling is meaningless anyway.)
356             */
357            int             is_halted;
358            int             has_been_idling;
359    
360            /*
361           *  Dynamic translation:           *  Dynamic translation:
362             *
363             *  The number of translated instructions is assumed to be 1 per
364             *  instruction call. For each case where this differs from the
365             *  truth, n_translated_instrs should be modified. E.g. if 1000
366             *  instruction calls are done, and n_translated_instrs is 50, then
367             *  1050 emulated instructions were actually executed.
368             *
369             *  Note that it can also be adjusted negatively, that is, the way
370             *  to "get out" of a dyntrans loop is to set the current instruction
371             *  call pointer to the "nothing" instruction. This instruction
372             *  _decreases_ n_translated_instrs. That way, once the dyntrans loop
373             *  exits, only real instructions will be counted, and not the
374             *  "nothing" instructions.
375             *
376             *  The translation cache is a relative large chunk of memory (say,
377             *  32 MB) which is used for translations. When it has been used up,
378             *  everything restarts from scratch.
379             *
380             *  When translating to native code, currently_translating_to_native
381             *  is non-zero, and native_code_function_pointer points to the
382             *  "ic->f" which will be modified (once the translation has finished)
383             *  to point to the newly translated code.
384           */           */
         int             running_translated;  
385          int             n_translated_instrs;          int             n_translated_instrs;
386          unsigned char   *translation_cache;          unsigned char   *translation_cache;
387          size_t          translation_cache_cur_ofs;          size_t          translation_cache_cur_ofs;
388            int             currently_translating_to_native;
389          uint64_t        delay_jmpaddr;  /*  only used if delay_slot > 0  */          int             nr_of_instructions_translated_to_native;
390          int             delay_slot;          unsigned char   *native_cur_output_ptr;
391            void            **native_code_function_pointer;
392    
393          /*          /*
394           *  CPU-family dependent:           *  CPU-family dependent:
395             *
396             *  These contain everything ranging from registers, memory management,
397             *  status words, etc.
398           */           */
399          union {          union {
400                  struct alpha_cpu   alpha;                  struct alpha_cpu      alpha;
401                  struct arm_cpu     arm;                  struct arm_cpu        arm;
402                  struct avr_cpu     avr;                  struct avr_cpu        avr;
403                  struct hppa_cpu    hppa;                  struct m68k_cpu       m68k;
404                  struct i960_cpu    i960;                  struct mips_cpu       mips;
405                  struct ia64_cpu    ia64;                  struct ppc_cpu        ppc;
406                  struct m68k_cpu    m68k;                  struct rca180x_cpu    rca180x;
407                  struct mips_cpu    mips;                  struct sh_cpu         sh;
408                  struct ppc_cpu     ppc;                  struct sparc_cpu      sparc;
409                  struct sh_cpu      sh;                  struct transputer_cpu transputer;
                 struct sparc_cpu   sparc;  
                 struct x86_cpu     x86;  
410          } cd;          } cd;
411  };  };
412    
# Line 337  struct cpu { Line 414  struct cpu {
414  /*  cpu.c:  */  /*  cpu.c:  */
415  struct cpu *cpu_new(struct memory *mem, struct machine *machine,  struct cpu *cpu_new(struct memory *mem, struct machine *machine,
416          int cpu_id, char *cpu_type_name);          int cpu_id, char *cpu_type_name);
417    void cpu_destroy(struct cpu *cpu);
418    
419  void cpu_tlbdump(struct machine *m, int x, int rawflag);  void cpu_tlbdump(struct machine *m, int x, int rawflag);
 void cpu_register_match(struct machine *m, char *name,  
         int writeflag, uint64_t *valuep, int *match_register);  
420  void cpu_register_dump(struct machine *m, struct cpu *cpu,  void cpu_register_dump(struct machine *m, struct cpu *cpu,
421          int gprs, int coprocs);          int gprs, int coprocs);
422  int cpu_disassemble_instr(struct machine *m, struct cpu *cpu,  int cpu_disassemble_instr(struct machine *m, struct cpu *cpu,
423          unsigned char *instr, int running, uint64_t addr);          unsigned char *instr, int running, uint64_t addr);
424  char *cpu_gdb_stub(struct cpu *cpu, char *cmd);  char *cpu_gdb_stub(struct cpu *cpu, char *cmd);
425  int cpu_interrupt(struct cpu *cpu, uint64_t irq_nr);  
 int cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr);  
426  void cpu_functioncall_trace(struct cpu *cpu, uint64_t f);  void cpu_functioncall_trace(struct cpu *cpu, uint64_t f);
427  void cpu_functioncall_trace_return(struct cpu *cpu);  void cpu_functioncall_trace_return(struct cpu *cpu);
428    
429  void cpu_create_or_reset_tc(struct cpu *cpu);  void cpu_create_or_reset_tc(struct cpu *cpu);
430    
431  void cpu_run_init(struct machine *machine);  void cpu_run_init(struct machine *machine);
 int cpu_run(struct emul *emul, struct machine *machine);  
432  void cpu_run_deinit(struct machine *machine);  void cpu_run_deinit(struct machine *machine);
433    
434  void cpu_dumpinfo(struct machine *m, struct cpu *cpu);  void cpu_dumpinfo(struct machine *m, struct cpu *cpu);
435  void cpu_list_available_types(void);  void cpu_list_available_types(void);
436  void cpu_show_cycles(struct machine *machine, int forced);  void cpu_show_cycles(struct machine *machine, int forced);
437    
438  struct cpu_family *cpu_family_ptr_by_number(int arch);  struct cpu_family *cpu_family_ptr_by_number(int arch);
439  void cpu_init(void);  void cpu_init(void);
440    
# Line 366  void cpu_init(void); Line 445  void cpu_init(void);
445  #define INVALIDATE_VADDR                8  #define INVALIDATE_VADDR                8
446  #define INVALIDATE_VADDR_UPPER4         16      /*  useful for PPC emulation  */  #define INVALIDATE_VADDR_UPPER4         16      /*  useful for PPC emulation  */
447    
448  #define TLB_CODE                        0x02  
449    /*  Note: 64-bit processors running in 32-bit mode use a 32-bit
450        display format, even though the underlying data is 64-bits.  */
451    #define CPU_SETTINGS_ADD_REGISTER64(name, var)                             \
452            settings_add(cpu->settings, name, 1, SETTINGS_TYPE_UINT64,         \
453                cpu->is_32bit? SETTINGS_FORMAT_HEX32 : SETTINGS_FORMAT_HEX64,  \
454                (void *) &(var));
455    #define CPU_SETTINGS_ADD_REGISTER32(name, var)                             \
456            settings_add(cpu->settings, name, 1, SETTINGS_TYPE_UINT32,         \
457                SETTINGS_FORMAT_HEX32, (void *) &(var));
458    #define CPU_SETTINGS_ADD_REGISTER16(name, var)                             \
459            settings_add(cpu->settings, name, 1, SETTINGS_TYPE_UINT16,         \
460                SETTINGS_FORMAT_HEX16, (void *) &(var));
461    #define CPU_SETTINGS_ADD_REGISTER8(name, var)                              \
462            settings_add(cpu->settings, name, 1, SETTINGS_TYPE_UINT8,          \
463                SETTINGS_FORMAT_HEX8, (void *) &(var));
464    
465    
466  #define CPU_FAMILY_INIT(n,s)    int n ## _cpu_family_init(              \  #define CPU_FAMILY_INIT(n,s)    int n ## _cpu_family_init(              \
# Line 375  void cpu_init(void); Line 469  void cpu_init(void);
469          fp->name = s;                                                   \          fp->name = s;                                                   \
470          fp->cpu_new = n ## _cpu_new;                                    \          fp->cpu_new = n ## _cpu_new;                                    \
471          fp->list_available_types = n ## _cpu_list_available_types;      \          fp->list_available_types = n ## _cpu_list_available_types;      \
         fp->register_match = n ## _cpu_register_match;                  \  
472          fp->disassemble_instr = n ## _cpu_disassemble_instr;            \          fp->disassemble_instr = n ## _cpu_disassemble_instr;            \
473          fp->register_dump = n ## _cpu_register_dump;                    \          fp->register_dump = n ## _cpu_register_dump;                    \
         fp->run = n ## _cpu_run;                                        \  
474          fp->dumpinfo = n ## _cpu_dumpinfo;                              \          fp->dumpinfo = n ## _cpu_dumpinfo;                              \
         fp->interrupt = n ## _cpu_interrupt;                            \  
         fp->interrupt_ack = n ## _cpu_interrupt_ack;                    \  
475          fp->functioncall_trace = n ## _cpu_functioncall_trace;          \          fp->functioncall_trace = n ## _cpu_functioncall_trace;          \
476          fp->gdb_stub = n ## _cpu_gdb_stub;                              \          fp->gdb_stub = n ## _cpu_gdb_stub;                              \
477          fp->tlbdump = n ## _cpu_tlbdump;                                \          fp->tlbdump = n ## _cpu_tlbdump;                                \
478            fp->init_tables = n ## _cpu_init_tables;                        \
479          return 1;                                                       \          return 1;                                                       \
480          }          }
481    
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