Change JIT return codes, use negative values for errors

libevmjit/Common.h

@@ -22,14 +22,16 @@ enum class ReturnCode
 	Return = 1,
 	Suicide = 2,
 
-	BadJumpDestination = 101,
-	OutOfGas = 102,
-	StackTooSmall = 103,
-	BadInstruction = 104,
-
-	LLVMConfigError = 201,
-	LLVMCompileError = 202,
-	LLVMLinkError = 203,
+	OutOfGas = -1,
+	BadJumpDestination = -2,
+	StackTooSmall = -3,
+	BadInstruction = -4,
+
+	LLVMConfigError = -5,
+	LLVMCompileError = -6,
+	LLVMLinkError = -7,
+
+	UnexpectedException = -8,
 };
 
 /// Representation of 256-bit value binary compatible with LLVM i256

libevmjit/Stack.cpp

@@ -73,7 +73,7 @@ extern "C"
 	{
 		auto& stack = _rt->getStack();
 		if (stack.size() < _count)
-			longjmp(_rt->getJmpBuf(), static_cast<uint64_t>(ReturnCode::StackTooSmall));
+			longjmp(_rt->getJmpBuf(), static_cast<int>(ReturnCode::StackTooSmall));
 
 		stack.erase(stack.end() - _count, stack.end());
 	}
@@ -92,7 +92,7 @@ extern "C"
 		auto& stack = _rt->getStack();
 		// TODO: encode _index and stack size in the return code
 		if (stack.size() <= _index)
-			longjmp(_rt->getJmpBuf(), static_cast<uint64_t>(ReturnCode::StackTooSmall));
+			longjmp(_rt->getJmpBuf(), static_cast<int>(ReturnCode::StackTooSmall));
 
 		*o_ret = *(stack.rbegin() + _index);
 	}
@@ -102,7 +102,7 @@ extern "C"
 		auto& stack = _rt->getStack();
 		// TODO: encode _index and stack size in the return code
 		if (stack.size() <= _index)
-			longjmp(_rt->getJmpBuf(), static_cast<uint64_t>(ReturnCode::StackTooSmall));
+			longjmp(_rt->getJmpBuf(), static_cast<int>(ReturnCode::StackTooSmall));
 
 		*(stack.rbegin() + _index) = *_word;
 	}