initial commitHEADmaster

1 files changed, 33 insertions, 0 deletions

diff --git a/src/ExecutorCases.h b/src/ExecutorCases.h
new file mode 100644
index 0000000..bbcd8ae
--- /dev/null
+++ b/src/ExecutorCases.h
@@ -0,0 +1,33 @@
+#pragma once
+
+#include <cstdint>
+#include <memory>
+#include <array>
+
+struct CPUContext;
+
+typedef void (*ExecutorCase)(CPUContext&);
+
+enum OperandEncoding : uint8_t {
+  ZO   =   0b00000000,
+  RM   =   0b00000001,
+  MR   =   0b00000010,
+  MI   =   0b00000100,
+  OI   =   0b00001000,
+  I32  =   0b00100000,
+  I16  =   0b01000000,
+  I8   =   0b10000000,
+};
+
+struct InstructionEntry {
+  ExecutorCase m_Executor;
+  OperandEncoding m_Encoding;
+};
+
+const std::array<InstructionEntry, 256>& GetInstructionTable();
+
+const std::array<ExecutorCase, 256>& GetExecutorTable();
+
+namespace executor_cases::helpers {
+  uint32_t ResolveModRMAddress(CPUContext& cc);
+}