1 files changed, 74 insertions, 0 deletions
diff --git a/src/ymh15/mips_instruction_test.h b/src/ymh15/mips_instruction_test.h
new file mode 100644
index 0000000..f276124
--- /dev/null
+++ b/src/ymh15/mips_instruction_test.h
@@ -0,0 +1,74 @@
+#include "mips.h"
+
+// Used to define the generic instruction implementation
+struct instruction_impl{
+  char type;
+  uint8_t opCode;
+  // Only used for an 'actual' function rather than instruction set member
+  uint32_t data;
+
+  // Constructor where there is actual raw data
+  instruction_impl(uint32_t dataIn, char typeIn):
+    type(typeIn),
+    opCode(uint8_t((dataIn & 0xFC000000) >> 26)),
+    data(dataIn){}
+};
+
+// Used for R type instructions, inherits the generic function type
+struct instruction_impl_r : public instruction_impl{
+  uint8_t source1;
+  uint8_t source2;
+  uint8_t dest;
+  uint8_t shift;
+  uint8_t function;
+
+  // Constructor specifying each part of the instruction
+  instruction_impl_r(
+    uint8_t source1In,
+    uint8_t source2In,
+    uint8_t destIn,
+    uint8_t shiftIn,
+    uint8_t functionIn):
+      instruction_impl(
+        uint32_t(
+          0x00000000 | ((uint32_t(source1In) & 0x0000001F) << 21) |
+          ((uint32_t(source2In) & 0x0000001F) << 16) |
+          ((uint32_t(destIn) & 0x0000001F) << 11) |
+          ((uint32_t(shiftIn) & 0x0000001F) << 6) |
+          (uint32_t(functionIn) & 0x0000003F)),
+        'r'),
+      source1(source1In),
+      source2(source2In),
+      dest(destIn),
+      shift(shiftIn),
+      function(functionIn){}
+};
+
+// Used for J type instructions, inherits the generic function type
+struct instruction_impl_j: public instruction_impl{
+  uint32_t address;
+
+  instruction_impl_j(uint8_t opCodeIn, uint32_t addressIn):
+    instruction_impl(uint32_t(((uint32_t(opCodeIn) & 0x0000003F) << 26) | (addressIn & 0x03FFFFFF)), 'j'),
+    address(addressIn){}
+};
+
+// Used for I type instructions, inherits the generic function type
+struct instruction_impl_i: public instruction_impl{
+  uint8_t source;
+  uint8_t dest;
+  uint16_t immediate;
+
+  // Constructor specifying each part of the instruction
+  instruction_impl_i(uint8_t opCodeIn, uint8_t sourceIn, uint8_t destIn, uint16_t immediateIn):
+    instruction_impl(
+      uint32_t(
+        0x00000000 | ((uint32_t(opCodeIn) & 0x0000003F) << 26) |
+        ((uint32_t(sourceIn) & 0x0000001F) << 21) |
+        ((uint32_t(destIn) & 0x0000001F) << 16) |
+        (uint32_t(immediateIn))),
+      'i'),
+    source(sourceIn),
+    dest(destIn),
+    immediate(immediateIn){}
+};