/[gxemul]/trunk/src/native/native.c
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revision 37 by dpavlin, Mon Oct 8 16:21:17 2007 UTC revision 38 by dpavlin, Mon Oct 8 16:21:53 2007 UTC
# Line 25  Line 25 
25   *  SUCH DAMAGE.   *  SUCH DAMAGE.
26   *   *
27   *   *
28   *  $Id: native.c,v 1.2 2007/02/16 16:48:07 debug Exp $   *  $Id: native.c,v 1.6 2007/03/31 15:11:26 debug Exp $
29   *   *
30   *  Native Code Generation framework; common routines.   *  Native Code Generation framework; common routines.
31   *   *
32   *  NOTE/TODO:  This is just a dummy so far, native code generation   *  NOTE/TODO:  This is just a dummy so far, native code generation
33   *              has not been implemented.   *              has not been implemented for the new dyntrans system.
34   */   */
35    
36  #include <stdio.h>  #include <stdio.h>
37  #include <stdlib.h>  #include <stdlib.h>
38    #include <string.h>
39  #include <unistd.h>  #include <unistd.h>
40    
41  #include "cpu.h"  #include "cpu.h"
# Line 46  Line 47 
47    
48  /*  /*
49   *  Dummy functions, if native code generation is not supported   *  Dummy functions, if native code generation is not supported
50   *  for this specific host.   *  for this specific host ABI.
51   */   */
52  void native_start(struct cpu *cpu) { }  /*  TODO  */
 void native_commit(struct cpu *cpu) { }  
53    
54    
55  #else   /*  NATIVE_CODE_GENERATION  */  #else   /*  NATIVE_CODE_GENERATION  */
56    
57    
58    #ifdef HOST_ARCH_ALPHA
59    #include "native_alpha.c"
60    #endif
61  #ifdef HOST_ARCH_AMD64  #ifdef HOST_ARCH_AMD64
62  #include "native_amd64.c"  #include "native_x86.c"
63  #endif  #endif
64    
65  extern int native_code_translation_enabled;  extern int native_code_translation_enabled;
66    
67    
68  /*  /*  TODO  */
  *  native_start():  
  *  
  *  This function should be the first thing called in each individual  
  *  instruction output function.  
  */  
 void native_start(struct cpu *cpu)  
 {  
         if (cpu->currently_translating_to_native)  
                 return;  
   
         cpu->currently_translating_to_native = 1;  
         cpu->nr_of_instructions_translated_to_native = 0;  
         cpu->native_cur_output_ptr = cpu->translation_cache  
             + cpu->translation_cache_cur_ofs;  
   
         native_output_function_prelude(cpu);  
 }  
   
   
 /*  
  *  native_commit():  
  *  
  *  This function should be called when the current translation (if any)  
  *  is to be committed to its corresponding ic->f pointer.  
  *  
  *  It updates the current cache offset (cpu->translation_cache_cur_ofs).  
  */  
 void native_commit(struct cpu *cpu)  
 {  
         if (!native_code_translation_enabled ||  
             !cpu->currently_translating_to_native)  
                 return;  
   
         cpu->currently_translating_to_native = 0;  
   
         native_output_next_ic_increment(cpu);  
         native_output_function_postlude(cpu);  
   
 #if 0  
 {  
 uint8_t *p = cpu->translation_cache + cpu->translation_cache_cur_ofs;  
 while (p < cpu->native_cur_output_ptr)  
         printf(" %02x", *p++);  
 printf("\n");  
 }  
 #endif  
   
         (*cpu->native_code_function_pointer) = (void *)  
             (cpu->translation_cache + cpu->translation_cache_cur_ofs);  
   
         cpu->translation_cache_cur_ofs = cpu->native_cur_output_ptr  
             - cpu->translation_cache;  
   
         cpu->translation_cache_cur_ofs --;  
         cpu->translation_cache_cur_ofs |= (NATIVE_FUNCTION_ALIGNMENT - 1);  
         cpu->translation_cache_cur_ofs ++;  
 }  
69    
70    
71  #endif  /*  NATIVE_CODE_GENERATION  */  #endif  /*  NATIVE_CODE_GENERATION  */
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