/[cebix]/SheepShaver/src/thunks.cpp
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Diff of /SheepShaver/src/thunks.cpp

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revision 1.1 by gbeauche, Thu Dec 4 17:26:35 2003 UTC revision 1.2 by gbeauche, Thu Dec 4 23:37:35 2003 UTC
# Line 29  Line 29 
29  #include "name_registry.h"  #include "name_registry.h"
30  #include "serial.h"  #include "serial.h"
31  #include "ether.h"  #include "ether.h"
32    #include "macos_util.h"
33    
34    
35  /*              NativeOp instruction format:  /*              NativeOp instruction format:
# Line 41  Line 42 
42  #define POWERPC_NATIVE_OP(LR, OP) \  #define POWERPC_NATIVE_OP(LR, OP) \
43                  (POWERPC_EMUL_OP | ((LR) << 11) | (((uint32)OP) << 6) | 2)                  (POWERPC_EMUL_OP | ((LR) << 11) | (((uint32)OP) << 6) | 2)
44    
45  // Return the fake PowerPC opcode to handle specified native code  /*
46     *  Return the fake PowerPC opcode to handle specified native code
47     */
48    
49  #if EMULATED_PPC  #if EMULATED_PPC
50  uint32 NativeOpcode(int selector)  uint32 NativeOpcode(int selector)
51  {  {
# Line 84  uint32 NativeOpcode(int selector) Line 88  uint32 NativeOpcode(int selector)
88  }  }
89  #endif  #endif
90    
91  // NativeOp -> { TVECT, function base } mappings  
92    /*
93     *  Initialize the thunks system
94     */
95    
96  struct native_op_t {  struct native_op_t {
97          uint32 tvect;          uint32 tvect;
98          uint32 func;          uint32 func;
99  };  };
100  static native_op_t native_op[NATIVE_OP_MAX];  static native_op_t native_op[NATIVE_OP_MAX];
101    
 // Initialize the thunks system  
102  bool ThunksInit(void)  bool ThunksInit(void)
103  {  {
104  #if EMULATED_PPC  #if EMULATED_PPC
# Line 120  bool ThunksInit(void) Line 127  bool ThunksInit(void)
127  #else  #else
128  #error "FIXME: define NativeOp for your platform"  #error "FIXME: define NativeOp for your platform"
129  #endif  #endif
130            DEFINE_NATIVE_OP(NATIVE_PATCH_NAME_REGISTRY, DoPatchNameRegistry);
131            DEFINE_NATIVE_OP(NATIVE_VIDEO_INSTALL_ACCEL, VideoInstallAccel);
132            DEFINE_NATIVE_OP(NATIVE_VIDEO_VBL, VideoVBL);
133            DEFINE_NATIVE_OP(NATIVE_VIDEO_DO_DRIVER_IO, VideoDoDriverIO);
134            DEFINE_NATIVE_OP(NATIVE_ETHER_IRQ, EtherIRQ);
135            DEFINE_NATIVE_OP(NATIVE_ETHER_INIT, InitStreamModule);
136            DEFINE_NATIVE_OP(NATIVE_ETHER_TERM, TerminateStreamModule);
137            DEFINE_NATIVE_OP(NATIVE_ETHER_OPEN, ether_open);
138            DEFINE_NATIVE_OP(NATIVE_ETHER_CLOSE, ether_close);
139            DEFINE_NATIVE_OP(NATIVE_ETHER_WPUT, ether_wput);
140            DEFINE_NATIVE_OP(NATIVE_ETHER_RSRV, ether_rsrv);
141          DEFINE_NATIVE_OP(NATIVE_SERIAL_NOTHING, SerialNothing);          DEFINE_NATIVE_OP(NATIVE_SERIAL_NOTHING, SerialNothing);
142          DEFINE_NATIVE_OP(NATIVE_SERIAL_OPEN, SerialOpen);          DEFINE_NATIVE_OP(NATIVE_SERIAL_OPEN, SerialOpen);
143          DEFINE_NATIVE_OP(NATIVE_SERIAL_PRIME_IN, SerialPrimeIn);          DEFINE_NATIVE_OP(NATIVE_SERIAL_PRIME_IN, SerialPrimeIn);
# Line 133  bool ThunksInit(void) Line 151  bool ThunksInit(void)
151          return true;          return true;
152  }  }
153    
154  // Return the native function descriptor (TVECT)  
155    /*
156     *  Return the native function descriptor (TVECT)
157     */
158    
159  uint32 NativeTVECT(int selector)  uint32 NativeTVECT(int selector)
160  {  {
161          assert(selector < NATIVE_OP_MAX);          assert(selector < NATIVE_OP_MAX);
162          const uint32 tvect = native_op[selector].tvect;          const uint32 tvect = native_op[selector].tvect;
163          assert(tvect != 0);          assert(tvect != 0);
164          return native_op[selector].tvect;          return tvect;
165  }  }
166    
167  // Return the native function address  
168    /*
169     *  Return the native function address
170     */
171    
172  uint32 NativeFunction(int selector)  uint32 NativeFunction(int selector)
173  {  {
174          assert(selector < NATIVE_OP_MAX);          assert(selector < NATIVE_OP_MAX);
175          const uint32 func = native_op[selector].func;          const uint32 func = native_op[selector].func;
176          assert(func != 0);          assert(func != 0);
177          return native_op[selector].func;          return func;
178    }
179    
180    
181    /*
182     *  Execute native code from EMUL_OP routine (real mode switch)
183     */
184    
185    void ExecuteNative(int selector)
186    {
187            SheepRoutineDescriptor desc(0, NativeTVECT(selector));
188            M68kRegisters r;
189            Execute68k(desc.addr(), &r);
190  }  }
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