C Interface draft 1

libevmjit/interface.c

@@ -0,0 +1,30 @@
+#include <stdint.h>
+
+// JIT object opaque type
+typedef struct evm_jit evm_jit;
+
+// Contract execution return code
+typedef int evm_jit_return_code;
+
+// Host-endian 256-bit integer type
+typedef struct i256 i256;
+
+// Big-endian right aligned 256-bit hash
+typedef struct h256 h256;
+
+// Runtime data struct - must be provided by external language (Go, C++, Python)
+typedef struct evm_jit_rt evm_jit_rt;
+
+// Runtime callback functions  - implementations must be provided by external language (Go, C++, Python)
+void evm_jit_rt_sload(evm_jit_rt* _rt, i256* _index, i256* _ret);
+void evm_jit_rt_sstore(evm_jit_rt* _rt, i256* _index, i256* _value);
+void evm_jit_rt_balance(evm_jit_rt* _rt, h256* _address, i256* _ret);
+// And so on...
+
+evm_jit* evm_jit_create(evm_jit_rt* _runtime_data);
+
+evm_jit_return_code evm_jit_execute(evm_jit* _jit);
+
+void evm_jit_get_return_data(evm_jit* _jit, char* _return_data_offset, size_t* _return_data_size);
+
+void evm_jit_destroy(evm_jit* _jit);

windows/LibEvmJit.vcxproj

@@ -131,6 +131,7 @@
     <ClCompile Include="..\libevmjit\ExecutionEngine.cpp" />
     <ClCompile Include="..\libevmjit\Ext.cpp" />
     <ClCompile Include="..\libevmjit\GasMeter.cpp" />
+    <ClCompile Include="..\libevmjit\interface.c" />
     <ClCompile Include="..\libevmjit\Memory.cpp" />
     <ClCompile Include="..\libevmjit\Runtime.cpp" />
     <ClCompile Include="..\libevmjit\Stack.cpp" />

windows/LibEvmJit.vcxproj.filters

@@ -48,6 +48,9 @@
     <ClCompile Include="..\libevmjit\Arith256.cpp">
       <Filter>libevmjit</Filter>
     </ClCompile>
+    <ClCompile Include="..\libevmjit\interface.c">
+      <Filter>libevmjit</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="..\libevmjit\BasicBlock.h">