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root/cebix/SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp
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Comparing SheepShaver/src/kpx_cpu/sheepshaver_glue.cpp (file contents):
Revision 1.17 by gbeauche, 2003-11-10T16:23:58Z vs.
Revision 1.22 by gbeauche, 2003-12-04T23:37:38Z

# Line 30 | Line 30
30   #include "sigsegv.h"
31   #include "cpu/ppc/ppc-cpu.hpp"
32   #include "cpu/ppc/ppc-operations.hpp"
33 + #include "cpu/ppc/ppc-instructions.hpp"
34 + #include "thunks.h"
35  
36   // Used for NativeOp trampolines
37   #include "video.h"
# Line 71 | Line 73 | static void enter_mon(void)
73   #endif
74   }
75  
76 + // PowerPC EmulOp to exit from emulation looop
77 + const uint32 POWERPC_EXEC_RETURN = POWERPC_EMUL_OP | 1;
78 +
79   // Enable multicore (main/interrupts) cpu emulation?
80   #define MULTICORE_CPU (ASYNC_IRQ ? 1 : 0)
81  
# Line 92 | Line 97 | static KernelData * const kernel_data =
97   // SIGSEGV handler
98   static sigsegv_return_t sigsegv_handler(sigsegv_address_t, sigsegv_address_t);
99  
100 + // JIT Compiler enabled?
101 + static inline bool enable_jit_p()
102 + {
103 +        return PrefsFindBool("jit");
104 + }
105 +
106  
107   /**
108   *              PowerPC emulator glue with special 'sheep' opcodes
109   **/
110  
111 + enum {
112 +        PPC_I(SHEEP) = PPC_I(MAX),
113 +        PPC_I(SHEEP_MAX)
114 + };
115 +
116   class sheepshaver_cpu
117          : public powerpc_cpu
118   {
# Line 112 | Line 128 | public:
128          uint32 get_cr() const           { return cr().get(); }
129          void set_cr(uint32 v)           { cr().set(v); }
130  
115 –        // Execution loop
116 –        void execute(uint32 entry, bool enable_cache = false);
117 –
131          // Execute 68k routine
132          void execute_68k(uint32 entry, M68kRegisters *r);
133  
# Line 147 | Line 160 | public:
160   lazy_allocator< sheepshaver_cpu > allocator_helper< sheepshaver_cpu, lazy_allocator >::allocator;
161  
162   sheepshaver_cpu::sheepshaver_cpu()
163 <        : powerpc_cpu()
163 >        : powerpc_cpu(enable_jit_p())
164   {
165          init_decoder();
166   }
# Line 165 | Line 178 | void sheepshaver_cpu::init_decoder()
178                  { "sheep",
179                    (execute_pmf)&sheepshaver_cpu::execute_sheep,
180                    NULL,
181 +                  PPC_I(SHEEP),
182                    D_form, 6, 0, CFLOW_JUMP | CFLOW_TRAP
183                  }
184          };
# Line 237 | Line 251 | void sheepshaver_cpu::execute_sheep(uint
251          }
252   }
253  
240 – // Execution loop
241 – void sheepshaver_cpu::execute(uint32 entry, bool enable_cache)
242 – {
243 –        powerpc_cpu::execute(entry, enable_cache);
244 – }
245 –
254   // Handle MacOS interrupt
255   void sheepshaver_cpu::interrupt(uint32 entry)
256   {
# Line 260 | Line 268 | void sheepshaver_cpu::interrupt(uint32 e
268   #endif
269  
270          // Initialize stack pointer to SheepShaver alternate stack base
271 <        gpr(1) = SheepStack1Base - 64;
271 >        SheepArray<64> stack_area;
272 >        gpr(1) = stack_area.addr();
273  
274          // Build trampoline to return from interrupt
275 <        uint32 trampoline[] = { htonl(POWERPC_EMUL_OP | 1) };
275 >        SheepVar32 trampoline = POWERPC_EXEC_RETURN;
276  
277          // Prepare registers for nanokernel interrupt routine
278          kernel_data->v[0x004 >> 2] = htonl(gpr(1));
# Line 282 | Line 291 | void sheepshaver_cpu::interrupt(uint32 e
291          gpr(1)  = KernelDataAddr;
292          gpr(7)  = ntohl(kernel_data->v[0x660 >> 2]);
293          gpr(8)  = 0;
294 <        gpr(10) = (uint32)trampoline;
295 <        gpr(12) = (uint32)trampoline;
294 >        gpr(10) = trampoline.addr();
295 >        gpr(12) = trampoline.addr();
296          gpr(13) = get_cr();
297  
298          // rlwimi. r7,r7,8,0,0
# Line 420 | Line 429 | uint32 sheepshaver_cpu::execute_macos_co
429          uint32 saved_ctr= ctr();
430  
431          // Build trampoline with EXEC_RETURN
432 <        uint32 trampoline[] = { htonl(POWERPC_EMUL_OP | 1) };
433 <        lr() = (uint32)trampoline;
432 >        SheepVar32 trampoline = POWERPC_EXEC_RETURN;
433 >        lr() = trampoline.addr();
434  
435          gpr(1) -= 64;                                                           // Create stack frame
436          uint32 proc = ReadMacInt32(tvect);                      // Get routine address
# Line 465 | Line 474 | inline void sheepshaver_cpu::execute_ppc
474          // Save branch registers
475          uint32 saved_lr = lr();
476  
477 <        const uint32 trampoline[] = { htonl(POWERPC_EMUL_OP | 1) };
478 <        lr() = (uint32)trampoline;
477 >        SheepVar32 trampoline = POWERPC_EXEC_RETURN;
478 >        WriteMacInt32(trampoline.addr(), POWERPC_EXEC_RETURN);
479 >        lr() = trampoline.addr();
480  
481          execute(entry);
482  
# Line 679 | Line 689 | void emul_ppc(uint32 entry)
689          current_cpu->start_log();
690   #endif
691          // start emulation loop and enable code translation or caching
692 <        current_cpu->execute(entry, true);
692 >        current_cpu->execute(entry);
693   }
694  
695   /*
# Line 774 | Line 784 | void sheepshaver_cpu::handle_interrupt(v
784                                  if (InterruptFlags & INTFLAG_VIA) {
785                                          ClearInterruptFlag(INTFLAG_VIA);
786                                          ADBInterrupt();
787 <                                        ExecutePPC(VideoVBL);
787 >                                        ExecuteNative(NATIVE_VIDEO_VBL);
788                                  }
789                          }
790   #endif
# Line 784 | Line 794 | void sheepshaver_cpu::handle_interrupt(v
794          }
795   }
796  
787 – /*
788 – *  Execute NATIVE_OP opcode (called by PowerPC emulator)
789 – */
790 –
791 – #define POWERPC_NATIVE_OP_INIT(LR, OP) \
792 –                tswap32(POWERPC_EMUL_OP | ((LR) << 11) | (((uint32)OP) << 6) | 2)
793 –
794 – // FIXME: Make sure 32-bit relocations are used
795 – const uint32 NativeOpTable[NATIVE_OP_MAX] = {
796 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_PATCH_NAME_REGISTRY),
797 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_INSTALL_ACCEL),
798 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_VBL),
799 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_VIDEO_DO_DRIVER_IO),
800 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_IRQ),
801 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_INIT),
802 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_TERM),
803 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_OPEN),
804 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_CLOSE),
805 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_WPUT),
806 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_ETHER_RSRV),
807 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_NOTHING),
808 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_OPEN),
809 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_PRIME_IN),
810 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_PRIME_OUT),
811 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_CONTROL),
812 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_STATUS),
813 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_SERIAL_CLOSE),
814 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_RESOURCE),
815 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_1_RESOURCE),
816 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_IND_RESOURCE),
817 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_GET_1_IND_RESOURCE),
818 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_R_GET_RESOURCE),
819 –        POWERPC_NATIVE_OP_INIT(0, NATIVE_DISABLE_INTERRUPT),
820 –        POWERPC_NATIVE_OP_INIT(0, NATIVE_ENABLE_INTERRUPT),
821 –        POWERPC_NATIVE_OP_INIT(1, NATIVE_MAKE_EXECUTABLE),
822 – };
823 –
797   static void get_resource(void);
798   static void get_1_resource(void);
799   static void get_ind_resource(void);
# Line 935 | Line 908 | static void NativeOp(int selector)
908   }
909  
910   /*
938 – *  Execute native subroutine (LR must contain return address)
939 – */
940 –
941 – void ExecuteNative(int selector)
942 – {
943 –        uint32 tvect[2];
944 –        tvect[0] = tswap32(POWERPC_NATIVE_OP_FUNC(selector));
945 –        tvect[1] = 0; // Fake TVECT
946 –        RoutineDescriptor desc = BUILD_PPC_ROUTINE_DESCRIPTOR(0, tvect);
947 –        M68kRegisters r;
948 –        Execute68k((uint32)&desc, &r);
949 – }
950 –
951 – /*
911   *  Execute 68k subroutine (must be ended with EXEC_RETURN)
912   *  This must only be called by the emul_thread when in EMUL_OP mode
913   *  r->a[7] is unused, the routine runs on the caller's stack
# Line 966 | Line 925 | void Execute68k(uint32 pc, M68kRegisters
925  
926   void Execute68kTrap(uint16 trap, M68kRegisters *r)
927   {
928 <        uint16 proc[2];
929 <        proc[0] = htons(trap);
930 <        proc[1] = htons(M68K_RTS);
931 <        Execute68k((uint32)proc, r);
928 >        SheepVar proc_var(4);
929 >        uint32 proc = proc_var.addr();
930 >        WriteMacInt16(proc, trap);
931 >        WriteMacInt16(proc + 2, M68K_RTS);
932 >        Execute68k(proc, r);
933   }
934  
935   /*

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