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Fixed for loop for str

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master
Apoorva Ranade 4 years ago
parent 2db4a635f8
commit 22ada8a1c1
1 changed files with 15 additions and 17 deletions
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32
src/main/java/chocopy/pa3/CodeGenImpl.java
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@ -130,8 +130,8 @@ public class CodeGenImpl extends CodeGenBase
StmtAnalyzer stmtAnalyzer = new StmtAnalyzer(funcInfo); StmtAnalyzer stmtAnalyzer = new StmtAnalyzer(funcInfo);
int emptySlotNum = 3; int emptySlotNum = 3;
for (StackVarInfo var : funcInfo.getLocals()) { for (StackVarInfo var : funcInfo.getLocals()) {
Literal varLitral = var.getInitialValue(); Literal varLiteral = var.getInitialValue();
varLitral.dispatch(stmtAnalyzer); varLiteral.dispatch(stmtAnalyzer);
// All Literals should save locations for the values in A0 // All Literals should save locations for the values in A0
backend.emitSW(A0, SP, requiredStackSpace-emptySlotNum*wordSize, "Push local variable " + var.getVarName() + " onto stack"); backend.emitSW(A0, SP, requiredStackSpace-emptySlotNum*wordSize, "Push local variable " + var.getVarName() + " onto stack");
emptySlotNum++; emptySlotNum++;
@ -292,7 +292,7 @@ public class CodeGenImpl extends CodeGenBase
incSp(1); incSp(1);
backend.emitSW(A0, FP, -sp_off*wordSize, "Push argument 0 from last."); backend.emitSW(A0, FP, -sp_off*wordSize, "Push argument 0 from last.");
backend.emitADDI(SP, FP, sp_off, "Set SP to last argument."); backend.emitADDI(SP, FP, sp_off*wordSize, "Set SP to last argument.");
backend.emitLW(A1, A0, getDispatchTableOffset(), "Load address of object's dispatch table"); backend.emitLW(A1, A0, getDispatchTableOffset(), "Load address of object's dispatch table");
backend.emitLW(A1, A1, getMethodOffset(cls, "__init__"), String.format("Load address of method: %s.__init__", cls.getClassName())); backend.emitLW(A1, A1, getMethodOffset(cls, "__init__"), String.format("Load address of method: %s.__init__", cls.getClassName()));
backend.emitJALR(A1, String.format("Invoke method: %s.__init", cls.getClassName())); backend.emitJALR(A1, String.format("Invoke method: %s.__init", cls.getClassName()));
@ -305,10 +305,10 @@ public class CodeGenImpl extends CodeGenBase
FuncInfo calleeFunctionInfo = (FuncInfo) sym.get(node.function.name); FuncInfo calleeFunctionInfo = (FuncInfo) sym.get(node.function.name);
boolean isInMainFunction = funcInfo == null; boolean isInMainFunction = funcInfo == null;
if (!isInMainFunction) { if (!isInMainFunction) {
System.out.println("--> caller: " + funcInfo.getFuncName() + " depth: " + funcInfo.getDepth()); System.out.println("--> caller: " + funcInfo.getFuncName() + " depth: " + funcInfo.getDepth());
System.out.println("--> callee: " + calleeFunctionInfo.getFuncName() + " depth: " + calleeFunctionInfo.getDepth()); System.out.println("--> callee: " + calleeFunctionInfo.getFuncName() + " depth: " + calleeFunctionInfo.getDepth());
int calleeDepth = calleeFunctionInfo.getDepth(); int calleeDepth = calleeFunctionInfo.getDepth();
int callerDepth = funcInfo.getDepth(); int callerDepth = funcInfo.getDepth();
int jumps = callerDepth - calleeDepth + 1; int jumps = callerDepth - calleeDepth + 1;
@ -325,7 +325,8 @@ public class CodeGenImpl extends CodeGenBase
backend.emitSW(tmp, SP, -1 * wordSize, "Push static link onto active frame."); backend.emitSW(tmp, SP, -1 * wordSize, "Push static link onto active frame.");
freeRegister(tmpHandle); freeRegister(tmpHandle);
} else { }
else {
backend.emitSW(FP, SP, -1 * wordSize, "Push static link onto active frame."); backend.emitSW(FP, SP, -1 * wordSize, "Push static link onto active frame.");
} }
@ -1000,9 +1001,6 @@ public class CodeGenImpl extends CodeGenBase
r=getRegister(); r=getRegister();
regs.add(r); regs.add(r);
Register ln = registerPool[r]; Register ln = registerPool[r];
//backend.emitBNEZ(Register.A0, temp, "Ensure not none");
//backend.emitJ(errorNone, "Empty String");
//backend.emitLocalLabel(temp, "Continue execution for for-loop");
backend.emitMV(l,Register.A0,"Location of String"); backend.emitMV(l,Register.A0,"Location of String");
r=getRegister(); r=getRegister();
regs.add(r); regs.add(r);
@ -1012,15 +1010,14 @@ public class CodeGenImpl extends CodeGenBase
backend.emitMV(iter, Register.ZERO, "Initialize index variable"); backend.emitMV(iter, Register.ZERO, "Initialize index variable");
backend.emitSW(iter, Register.FP, -sp_off*wordSize, "Store index on stack"); backend.emitSW(iter, Register.FP, -sp_off*wordSize, "Store index on stack");
incSp(1); incSp(1);
backend.emitADDI(Register.SP, Register.SP, -2*wordSize, "Set SP to last argument");
backend.emitLocalLabel(startLoop, "Start for loop"); backend.emitLocalLabel(startLoop, "Start for loop");
sp_off--; backend.emitLW(iter, Register.FP, -(sp_off-1)*wordSize, "Load index from stack");
backend.emitLW(iter, Register.FP, -(sp_off)*wordSize, "Load index from stack"); backend.emitLW(l, Register.FP, -(sp_off-2)*wordSize, "Load string location from stack");
backend.emitLW(l, Register.FP, -(sp_off-1)*wordSize, "Store string location from stack");
backend.emitLW(ln, l, getAttrOffset(strClass, "__len__"), "Get attribute __len__"); backend.emitLW(ln, l, getAttrOffset(strClass, "__len__"), "Get attribute __len__");
backend.emitBGEU(iter, ln, endLoop, "Jump to end loop if counter exceeds length"); backend.emitBGEU(iter, ln, endLoop, "Jump to end loop if counter exceeds length");
backend.emitADDI(iden, iter, 1, "Increment counter"); backend.emitADDI(iden, iter, 1, "Increment counter");
backend.emitSW(iden, Register.FP, -sp_off*wordSize, "Store index on stack"); backend.emitSW(iden, Register.FP, -(sp_off-1)*wordSize, "Store index on stack");
incSp(1);
backend.emitADDI(iden, iter, 4 * wordSize, "Convert index to offset to char in bytes"); backend.emitADDI(iden, iter, 4 * wordSize, "Convert index to offset to char in bytes");
backend.emitADD(iden, l, iden, "Get pointer to char"); backend.emitADD(iden, l, iden, "Get pointer to char");
backend.emitLBU(iden, iden, 0, "Load character"); backend.emitLBU(iden, iden, 0, "Load character");
@ -1032,12 +1029,13 @@ public class CodeGenImpl extends CodeGenBase
if(info instanceof GlobalVarInfo) if(info instanceof GlobalVarInfo)
{ {
GlobalVarInfo gvi=(GlobalVarInfo) info; GlobalVarInfo gvi=(GlobalVarInfo) info;
backend.emitSW(iden, gvi.getLabel(), Register.T0, "Assign global: "+node.identifier.name+"(using tmp register)"); backend.emitMV(Register.A0,l,"Copy value");
backend.emitSW(Register.A0, gvi.getLabel(), Register.T0, "Assign global: "+node.identifier.name+"(using tmp register)");
} }
else else
{ {
StackVarRuntimeInfo rtinfo = (StackVarRuntimeInfo) getVar(node.identifier); StackVarRuntimeInfo rtinfo = (StackVarRuntimeInfo) getVar(node.identifier);
backend.emitSW(iden, rtinfo.sl, rtinfo.off,"Store local variable: "+node.identifier.name); backend.emitSW(l, rtinfo.sl, rtinfo.off,"Store local variable: "+node.identifier.name);
rtinfo.free(); rtinfo.free();
} }
for(Stmt stmt:node.body) for(Stmt stmt:node.body)

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