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Diffstat (limited to 'qtmips_machine/instruction.cpp')
-rw-r--r--qtmips_machine/instruction.cpp63
1 files changed, 54 insertions, 9 deletions
diff --git a/qtmips_machine/instruction.cpp b/qtmips_machine/instruction.cpp
index e03f794..1771afb 100644
--- a/qtmips_machine/instruction.cpp
+++ b/qtmips_machine/instruction.cpp
@@ -1,6 +1,51 @@
#include "instruction.h"
+#include "qtmipsexception.h"
-InstructionR::InstructionR(std::uint8_t rs, std::uint8_t rd, std::uint8_t rt, std::uint8_t sa) {
+Instruction::Instruction() {
+ this->st = IS_FETCH;
+}
+
+void Instruction::decode(Registers *regs) {
+ if (this->st != IS_FETCH)
+ // TODO other exception
+ throw std::exception();
+ this->st = IS_DECODE;
+}
+
+void Instruction::execute() {
+ if (this->st != IS_DECODE)
+ // TODO other exception
+ throw std::exception();
+ this->st = IS_EXECUTE;
+}
+
+void Instruction::memory(Memory *mem) {
+ if (this->st != IS_EXECUTE)
+ // TODO other exception
+ throw std::exception();
+ this->st = IS_MEMORY;
+}
+
+void Instruction::write_back(Registers *regs) {
+ if (this->st != IS_MEMORY)
+ // TODO other exception
+ throw std::exception();
+ this->st = IS_WRITE_BACK;
+}
+
+enum InstructionState Instruction::state() {
+ return this->st;
+}
+
+bool Instruction::running() {
+ return this->st > IS_FETCH && this->st < IS_WRITE_BACK;
+}
+
+bool Instruction::done() {
+ return this->st >= IS_WRITE_BACK;
+}
+
+InstructionR::InstructionR(std::uint8_t rs, std::uint8_t rd, std::uint8_t rt, std::uint8_t sa) : Instruction() {
this->rs = rs;
this->rd = rd;
this->rt = rt;
@@ -14,17 +59,17 @@ QVector<QString> InstructionR::to_strs() {
// Instruction name
str << "unknown"; // unknown instruction, should be replaced by child
// Source register
- str << QString::number((unsigned)this->rs, 16);
+ str << QString::number((unsigned)this->rs, 10);
// Target register
- str << QString::number((unsigned)this->rt, 16);
+ str << QString::number((unsigned)this->rt, 10);
// Destination register
- str << QString::number((unsigned)this->rd, 16);
+ str << QString::number((unsigned)this->rd, 10);
// Shift amount
- str << QString::number((unsigned)this->sa, 16);
+ str << QString::number((unsigned)this->sa, 10);
return str;
}
-InstructionI::InstructionI(std::uint8_t rs, std::uint8_t rt, std::uint16_t immediate) {
+InstructionI::InstructionI(std::uint8_t rs, std::uint8_t rt, std::uint16_t immediate) : Instruction() {
this->rs = rs;
this->rt = rt;
this->immediate = immediate;
@@ -35,15 +80,15 @@ QVector<QString> InstructionI::to_strs() {
// Instruction name
str << "unknown"; // unknown instruction, should be replaced by child
// Source register
- str << QString::number((unsigned)this->rs, 16);
+ str << QString::number((unsigned)this->rs, 10);
// Target register
- str << QString::number((unsigned)this->rt, 16);
+ str << QString::number((unsigned)this->rt, 10);
// Immediate value
str << QString::number((unsigned)this->immediate, 16);
return str;
}
-InstructionJ::InstructionJ(std::uint32_t address) {
+InstructionJ::InstructionJ(std::uint32_t address) : Instruction() {
this->address = address;
}