/[cebix]/SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp
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Diff of /SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp

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revision 1.38 by gbeauche, Wed May 19 21:23:16 2004 UTC revision 1.39 by gbeauche, Thu May 20 11:05:30 2004 UTC
# Line 147  class sheepshaver_cpu Line 147  class sheepshaver_cpu
147          void execute_emul_op_idle_time_1();          void execute_emul_op_idle_time_1();
148          void execute_emul_op_idle_time_2();          void execute_emul_op_idle_time_2();
149    
150            // CPU context to preserve on interrupt
151            class interrupt_context {
152                    uint32 gpr[32];
153                    uint32 pc;
154                    uint32 lr;
155                    uint32 ctr;
156                    uint32 cr;
157                    uint32 xer;
158                    sheepshaver_cpu *cpu;
159                    const char *where;
160            public:
161                    interrupt_context(sheepshaver_cpu *_cpu, const char *_where);
162                    ~interrupt_context();
163            };
164    
165  public:  public:
166    
167          // Constructor          // Constructor
# Line 533  int sheepshaver_cpu::compile1(codegen_co Line 548  int sheepshaver_cpu::compile1(codegen_co
548          return COMPILE_FAILURE;          return COMPILE_FAILURE;
549  }  }
550    
551    // CPU context to preserve on interrupt
552    sheepshaver_cpu::interrupt_context::interrupt_context(sheepshaver_cpu *_cpu, const char *_where)
553    {
554    #if SAFE_INTERRUPT_PPC >= 2
555            cpu = _cpu;
556            where = _where;
557    
558            // Save interrupt context
559            memcpy(&gpr[0], &cpu->gpr(0), sizeof(gpr));
560            pc = cpu->pc();
561            lr = cpu->lr();
562            ctr = cpu->ctr();
563            cr = cpu->get_cr();
564            xer = cpu->get_xer();
565    #endif
566    }
567    
568    sheepshaver_cpu::interrupt_context::~interrupt_context()
569    {
570    #if SAFE_INTERRUPT_PPC >= 2
571            // Check whether CPU context was preserved by interrupt
572            if (memcmp(&gpr[0], &cpu->gpr(0), sizeof(gpr)) != 0) {
573                    printf("FATAL: %s: interrupt clobbers registers\n", where);
574                    for (int i = 0; i < 32; i++)
575                            if (gpr[i] != cpu->gpr(i))
576                                    printf(" r%d: %08x -> %08x\n", i, gpr[i], cpu->gpr(i));
577            }
578            if (pc != cpu->pc())
579                    printf("FATAL: %s: interrupt clobbers PC\n", where);
580            if (lr != cpu->lr())
581                    printf("FATAL: %s: interrupt clobbers LR\n", where);
582            if (ctr != cpu->ctr())
583                    printf("FATAL: %s: interrupt clobbers CTR\n", where);
584            if (cr != cpu->get_cr())
585                    printf("FATAL: %s: interrupt clobbers CR\n", where);
586            if (xer != cpu->get_xer())
587                    printf("FATAL: %s: interrupt clobbers XER\n", where);
588    #endif
589    }
590    
591  // Handle MacOS interrupt  // Handle MacOS interrupt
592  void sheepshaver_cpu::interrupt(uint32 entry)  void sheepshaver_cpu::interrupt(uint32 entry)
593  {  {
# Line 547  void sheepshaver_cpu::interrupt(uint32 e Line 602  void sheepshaver_cpu::interrupt(uint32 e
602                  printf("FATAL: sheepshaver_cpu::interrupt() called more than once: %d\n", depth);                  printf("FATAL: sheepshaver_cpu::interrupt() called more than once: %d\n", depth);
603          depth++;          depth++;
604  #endif  #endif
 #if SAFE_INTERRUPT_PPC >= 2  
         uint32 saved_regs[32];  
         memcpy(&saved_regs[0], &gpr(0), sizeof(saved_regs));  
 #endif  
605    
606  #if !MULTICORE_CPU  #if !MULTICORE_CPU
607          // Save program counters and branch registers          // Save program counters and branch registers
# Line 610  void sheepshaver_cpu::interrupt(uint32 e Line 661  void sheepshaver_cpu::interrupt(uint32 e
661          interrupt_time += (clock() - interrupt_start);          interrupt_time += (clock() - interrupt_start);
662  #endif  #endif
663    
 #if SAFE_INTERRUPT_PPC >= 2  
         if (memcmp(&saved_regs[0], &gpr(0), sizeof(saved_regs)) != 0)  
                 printf("FATAL: dirty PowerPC registers\n");  
 #endif  
664  #if SAFE_INTERRUPT_PPC  #if SAFE_INTERRUPT_PPC
665          depth--;          depth--;
666  #endif  #endif
# Line 1070  void sheepshaver_cpu::handle_interrupt(v Line 1117  void sheepshaver_cpu::handle_interrupt(v
1117                  // 68k emulator inactive, in nanokernel?                  // 68k emulator inactive, in nanokernel?
1118                  assert(current_cpu == main_cpu);                  assert(current_cpu == main_cpu);
1119                  if (gpr(1) != KernelDataAddr) {                  if (gpr(1) != KernelDataAddr) {
1120                            interrupt_context ctx(this, "PowerPC mode");
1121    
1122                          // Prepare for 68k interrupt level 1                          // Prepare for 68k interrupt level 1
1123                          WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);                          WriteMacInt16(tswap32(kernel_data->v[0x67c >> 2]), 1);
1124                          WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc,                          WriteMacInt32(tswap32(kernel_data->v[0x658 >> 2]) + 0xdc,
# Line 1092  void sheepshaver_cpu::handle_interrupt(v Line 1141  void sheepshaver_cpu::handle_interrupt(v
1141          case MODE_EMUL_OP:          case MODE_EMUL_OP:
1142                  // 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0                  // 68k emulator active, within EMUL_OP routine, execute 68k interrupt routine directly when interrupt level is 0
1143                  if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {                  if ((ReadMacInt32(XLM_68K_R25) & 7) == 0) {
1144                            interrupt_context ctx(this, "68k mode");
1145  #if 1  #if 1
1146                          // Execute full 68k interrupt routine                          // Execute full 68k interrupt routine
1147                          M68kRegisters r;                          M68kRegisters r;
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