94 lines
2.7 KiB
Java
94 lines
2.7 KiB
Java
package backend.mips;
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import java.util.HashMap;
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import java.util.ArrayList;
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import backend.mips.instr.MipsInstr;
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import backend.mips.instr.data.MipsAsciiz;
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import backend.mips.instr.data.MipsSpace;
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import backend.mips.instr.data.MipsWord;
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import midend.llvm.value.IrFuncValue;
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import midend.llvm.value.IrValue;
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public class MipsBuilder {
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private static MipsModule module = null;
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private static int offset = 0;
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private static HashMap<IrValue, Integer> valueOffsetMap = new HashMap<>();
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private static HashMap<IrValue, Register> valueRegisterMap = new HashMap<>();
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public static void setModule(MipsModule module) {
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MipsBuilder.module = module;
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}
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public static int getOffset() {
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return offset;
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}
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public static void setOffset(int offset) {
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MipsBuilder.offset = offset;
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}
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public static void setValueOffsetMap(HashMap<IrValue, Integer> valueOffsetMap) {
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MipsBuilder.valueOffsetMap = valueOffsetMap;
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}
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public static HashMap<IrValue, Integer> getValueOffsetMap() {
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return valueOffsetMap;
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}
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public static void setValueRegisterMap(HashMap<IrValue, Register> valueRegisterMap) {
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MipsBuilder.valueRegisterMap = valueRegisterMap;
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}
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public static HashMap<IrValue, Register> getValueRegisterMap() {
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return valueRegisterMap;
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}
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public static MipsModule getModule() {
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return module;
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}
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public static void addMipsInstr(MipsInstr instr) {
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if (instr instanceof MipsAsciiz || instr instanceof MipsWord || instr instanceof MipsSpace) { //data段
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module.addData(instr);
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} else {
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module.addText(instr);
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}
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}
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public static void enterNewFunc(IrFuncValue func) {
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offset = 0;
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valueOffsetMap = func.getValueOffsetMap();
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valueOffsetMap.clear(); //TODO：是否需要清空？
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valueRegisterMap = func.getValueRegisterMap();
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}
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public static Register getRegister(IrValue value) {
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return valueRegisterMap.get(value);
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}
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public static Integer getOffset(IrValue value) {
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return valueOffsetMap.get(value);
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}
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public static void allocaRegister(IrValue value, Register reg) {
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valueRegisterMap.put(value, reg);
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}
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public static void allocaOffset(IrValue value) {
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if (!valueOffsetMap.containsKey(value)) {
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offset -= 4;
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int valueOffset = offset;
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valueOffsetMap.put(value, valueOffset);
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}
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}
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public static void allocaOffset(int extra) {
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offset -= extra;
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}
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public static ArrayList<Register> getUsedRegisters() {
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return new ArrayList<>(valueRegisterMap.values());
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}
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}
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