1 files changed, 51 insertions, 0 deletions
diff --git a/qtmips_machine/instructions/shift.cpp b/qtmips_machine/instructions/shift.cpp
new file mode 100644
index 0000000..a8c6e41
--- /dev/null
+++ b/qtmips_machine/instructions/shift.cpp
@@ -0,0 +1,51 @@
+#include "shift.h"
+
+InstructionShift::InstructionShift(enum InstructionShiftT type, std::uint8_t rt, std::uint8_t rd, std::uint8_t sa)
+    : InstructionR(0, rt, rd, sa) {
+    this->type = type;
+}
+
+std::vector<std::string> InstructionShift::to_strs() {
+    std::vector<std::string> str = this->InstructionR::to_strs();
+    str.erase(str.begin() + 1); // Drop rs field
+    switch (this->type) {
+    case IST_LL:
+        str[0] = "sll";
+        break;
+    case IST_RL:
+        str[0] = "srl";
+        break;
+    case IST_RA:
+        str[0] = "sra";
+        break;
+    default:
+        // TODO different exception
+        throw std::exception();
+    }
+    return str;
+}
+
+InstructionShiftVariable::InstructionShiftVariable(enum InstructionShiftT type, std::uint8_t rs, std::uint8_t rt, std::uint8_t rd)
+    : InstructionR(rs, rt, rd, 0) {
+    this->type = type;
+}
+
+std::vector<std::string> InstructionShiftVariable::to_strs() {
+    std::vector<std::string> str = this->InstructionR::to_strs();
+    str.erase(str.begin() + 4); // Drop sa field
+    switch (this->type) {
+    case IST_LL:
+        str[0] = "sllv";
+        break;
+    case IST_RL:
+        str[0] = "srlv";
+        break;
+    case IST_RA:
+        str[0] = "srav";
+        break;
+    default:
+        // TODO different exception
+        throw std::exception();
+    }
+    return str;
+}