/[gxemul]/trunk/src/cpus/cpu_ppc.c
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revision 33 by dpavlin, Mon Oct 8 16:20:58 2007 UTC revision 34 by dpavlin, Mon Oct 8 16:21:17 2007 UTC
# Line 1  Line 1 
1  /*  /*
2   *  Copyright (C) 2005-2006  Anders Gavare.  All rights reserved.   *  Copyright (C) 2005-2007  Anders Gavare.  All rights reserved.
3   *   *
4   *  Redistribution and use in source and binary forms, with or without   *  Redistribution and use in source and binary forms, with or without
5   *  modification, are permitted provided that the following conditions are met:   *  modification, are permitted provided that the following conditions are met:
# Line 25  Line 25 
25   *  SUCH DAMAGE.   *  SUCH DAMAGE.
26   *   *
27   *   *
28   *  $Id: cpu_ppc.c,v 1.64 2006/09/21 11:53:26 debug Exp $   *  $Id: cpu_ppc.c,v 1.67 2006/12/30 13:30:54 debug Exp $
29   *   *
30   *  PowerPC/POWER CPU emulation.   *  PowerPC/POWER CPU emulation.
31   */   */
# Line 37  Line 37 
37    
38  #include "cpu.h"  #include "cpu.h"
39  #include "devices.h"  #include "devices.h"
40    #include "interrupt.h"
41  #include "machine.h"  #include "machine.h"
42  #include "memory.h"  #include "memory.h"
43  #include "misc.h"  #include "misc.h"
# Line 56  Line 57 
57  void ppc_pc_to_pointers(struct cpu *);  void ppc_pc_to_pointers(struct cpu *);
58  void ppc32_pc_to_pointers(struct cpu *);  void ppc32_pc_to_pointers(struct cpu *);
59    
60    void ppc_irq_interrupt_assert(struct interrupt *interrupt);
61    void ppc_irq_interrupt_deassert(struct interrupt *interrupt);
62    
63    
64  /*  /*
65   *  ppc_cpu_new():   *  ppc_cpu_new():
# Line 215  int ppc_cpu_new(struct cpu *cpu, struct Line 219  int ppc_cpu_new(struct cpu *cpu, struct
219                  CPU_SETTINGS_ADD_REGISTER32(tmpstr, cpu->cd.ppc.sr[i]);                  CPU_SETTINGS_ADD_REGISTER32(tmpstr, cpu->cd.ppc.sr[i]);
220          }          }
221    
222            /*  Register the CPU as an interrupt handler:  */
223            {
224                    struct interrupt template;
225                    char name[150];
226                    snprintf(name, sizeof(name), "%s", cpu->path);
227                    memset(&template, 0, sizeof(template));
228                    template.line = 0;
229                    template.name = name;
230                    template.extra = cpu;
231                    template.interrupt_assert = ppc_irq_interrupt_assert;
232                    template.interrupt_deassert = ppc_irq_interrupt_deassert;
233                    interrupt_handler_register(&template);
234            }
235    
236          return 1;          return 1;
237  }  }
238    
# Line 657  char *ppc_cpu_gdb_stub(struct cpu *cpu, Line 675  char *ppc_cpu_gdb_stub(struct cpu *cpu,
675    
676    
677  /*  /*
678   *  ppc_cpu_interrupt():   *  ppc_irq_interrupt_assert():
  *  
  *  0..31 are used as BeBox interrupt numbers, 32..47 = ISA,  
  *  64 is used as a "re-assert" signal to cpu->machine->md_interrupt().  
  *  
  *  TODO: don't hardcode to BeBox!  
679   */   */
680  int ppc_cpu_interrupt(struct cpu *cpu, uint64_t irq_nr)  void ppc_irq_interrupt_assert(struct interrupt *interrupt)
681  {  {
682          /*  fatal("ppc_cpu_interrupt(): 0x%x\n", (int)irq_nr);  */          struct cpu *cpu = (struct cpu *) interrupt->extra;
683          if (irq_nr <= 64) {          cpu->cd.ppc.irq_asserted = 1;
                 if (cpu->machine->md_interrupt != NULL)  
                         cpu->machine->md_interrupt(  
                             cpu->machine, cpu, irq_nr, 1);  
                 else  
                         fatal("ppc_cpu_interrupt(): md_interrupt == NULL\n");  
         } else {  
                 /*  Assert PPC IRQ:  */  
                 cpu->cd.ppc.irq_asserted = 1;  
         }  
         return 1;  
684  }  }
685    
686    
687  /*  /*
688   *  ppc_cpu_interrupt_ack():   *  ppc_irq_interrupt_deassert():
689   */   */
690  int ppc_cpu_interrupt_ack(struct cpu *cpu, uint64_t irq_nr)  void ppc_irq_interrupt_deassert(struct interrupt *interrupt)
691  {  {
692          if (irq_nr <= 64) {          struct cpu *cpu = (struct cpu *) interrupt->extra;
693                  if (cpu->machine->md_interrupt != NULL)          cpu->cd.ppc.irq_asserted = 0;
                         cpu->machine->md_interrupt(cpu->machine,  
                             cpu, irq_nr, 0);  
         } else {  
                 /*  De-assert PPC IRQ:  */  
                 cpu->cd.ppc.irq_asserted = 0;  
         }  
         return 1;  
694  }  }
695    
696    
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