/[gxemul]/trunk/src/cpus/cpu_hppa_instr.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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revision 14 by dpavlin, Mon Oct 8 16:18:51 2007 UTC revision 20 by dpavlin, Mon Oct 8 16:19:23 2007 UTC
# Line 15  Line 15 
15   *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND   *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16   *  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE   *  ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17   *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE   *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18   *  ARE DISCLAIMED.  IN NO EVENT HPPAALL THE AUTHOR OR CONTRIBUTORS BE LIABLE     *  ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE  
19   *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL   *  FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20   *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS   *  DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21   *  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)   *  OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# Line 25  Line 25 
25   *  SUCH DAMAGE.   *  SUCH DAMAGE.
26   *   *
27   *   *
28   *  $Id: cpu_hppa_instr.c,v 1.2 2005/09/17 17:14:27 debug Exp $   *  $Id: cpu_hppa_instr.c,v 1.4 2005/11/13 22:34:22 debug Exp $
29   *   *
30   *  HPPA instructions.   *  HPPA instructions.
31   *   *
32   *  Individual functions hppaould keep track of cpu->n_translated_instrs.   *  Individual functions should keep track of cpu->n_translated_instrs.
33   *  (If no instruction was executed, then it hppaould be decreased. If, say, 4   *  (If no instruction was executed, then it should be decreased. If, say, 4
34   *  instructions were combined into one function and executed, then it hppaould   *  instructions were combined into one function and executed, then it should
35   *  be increased by 3.)   *  be increased by 3.)
36   */   */
37    
# Line 66  X(end_of_page) Line 66  X(end_of_page)
66    
67    
68  /*  /*
  *  hppa_combine_instructions():  
  *  
  *  Combine two or more instructions, if possible, into a single function call.  
  */  
 void COMBINE_INSTRUCTIONS(struct cpu *cpu, struct hppa_instr_call *ic,  
         uint32_t addr)  
 {  
         int n_back;  
         n_back = (addr >> HPPA_INSTR_ALIGNMENT_SHIFT)  
             & (HPPA_IC_ENTRIES_PER_PAGE-1);  
   
         if (n_back >= 1) {  
                 /*  TODO  */  
         }  
   
         /*  TODO: Combine forward as well  */  
 }  
   
   
 /*****************************************************************************/  
   
   
 /*  
69   *  hppa_instr_to_be_translated():   *  hppa_instr_to_be_translated():
70   *   *
71   *  Translate an instruction word into an hppa_instr_call. ic is filled in with   *  Translate an instruction word into an hppa_instr_call. ic is filled in with
# Line 98  void COMBINE_INSTRUCTIONS(struct cpu *cp Line 75  void COMBINE_INSTRUCTIONS(struct cpu *cp
75   */   */
76  X(to_be_translated)  X(to_be_translated)
77  {  {
78          uint64_t addr, low_pc, tmp_addr;          uint64_t addr, low_pc;
79          uint32_t iword;          uint32_t iword;
80          unsigned char *page;          unsigned char *page;
81          unsigned char ib[4];          unsigned char ib[4];
82          int main_opcode;          int main_opcode;
83          void (*samepage_function)(struct cpu *, struct hppa_instr_call *);          /* void (*samepage_function)(struct cpu *, struct hppa_instr_call *);*/
84    
85          /*  Figure out the (virtual) address of the instruction:  */          /*  Figure out the (virtual) address of the instruction:  */
86          low_pc = ((size_t)ic - (size_t)cpu->cd.hppa.cur_ic_page)          low_pc = ((size_t)ic - (size_t)cpu->cd.hppa.cur_ic_page)
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