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Fix return translation

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Hazem Krimi
2024-05-13 20:01:19 +01:00
parent d8c9839a85
commit dca5d7dc70
1 changed files with 18 additions and 2 deletions
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include/functions.h
+18 -2
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@@ -75,17 +75,24 @@ string translateCall(string name, int args) {
string translateReturn() { string translateReturn() {
stringstream output; stringstream output;
string cleanupLabel = "cleanup$ret" + generateRandomLabel(3);
string endLabel = "end$ret" + generateRandomLabel(3);
output << "@LCL" << endl; output << "@LCL" << endl;
output << "D=A" << endl; output << "D=M" << endl;
output << "@END_FRAME" << endl; output << "@END_FRAME" << endl;
output << "M=D" << endl; output << "M=D" << endl;
output << "@RETURN_ADDR" << endl; output << "@RETURN_ADDR" << endl;
output << "M=D" << endl; output << "M=D" << endl;
output << "@5" << endl; output << "@5" << endl;
output << "D=A" << endl; output << "D=A" << endl;
output << "@RETURN_ADDR" << endl; output << "@RETURN_ADDR" << endl;
output << "M=M-D" << endl; output << "M=M-D" << endl;
output << "A=M" << endl;
output << "D=M" << endl;
output << "@RETURN_ADDR" << endl;
output << "M=D" << endl;
output << "@ARG" << endl; output << "@ARG" << endl;
output << "D=M" << endl; output << "D=M" << endl;
@@ -108,6 +115,8 @@ string translateReturn() {
output << "D=M" << endl; output << "D=M" << endl;
output << "@1" << endl; output << "@1" << endl;
output << "D=D-A" << endl; output << "D=D-A" << endl;
output << "A=D" << endl;
output << "D=M" << endl;
output << "@THAT" << endl; output << "@THAT" << endl;
output << "M=D" << endl; output << "M=D" << endl;
@@ -115,6 +124,8 @@ string translateReturn() {
output << "D=M" << endl; output << "D=M" << endl;
output << "@2" << endl; output << "@2" << endl;
output << "D=D-A" << endl; output << "D=D-A" << endl;
output << "A=D" << endl;
output << "D=M" << endl;
output << "@THIS" << endl; output << "@THIS" << endl;
output << "M=D" << endl; output << "M=D" << endl;
@@ -122,6 +133,8 @@ string translateReturn() {
output << "D=M" << endl; output << "D=M" << endl;
output << "@3" << endl; output << "@3" << endl;
output << "D=D-A" << endl; output << "D=D-A" << endl;
output << "A=D" << endl;
output << "D=M" << endl;
output << "@ARG" << endl; output << "@ARG" << endl;
output << "M=D" << endl; output << "M=D" << endl;
@@ -129,11 +142,14 @@ string translateReturn() {
output << "D=M" << endl; output << "D=M" << endl;
output << "@4" << endl; output << "@4" << endl;
output << "D=D-A" << endl; output << "D=D-A" << endl;
output << "A=D" << endl;
output << "D=M" << endl;
output << "@LCL" << endl; output << "@LCL" << endl;
output << "M=D" << endl; output << "M=D" << endl;
output << "@RETURN_ADDR" << endl; output << "@RETURN_ADDR" << endl;
output << "0;JMP" << endl; output << "D=M" << endl;
output << "D;JMP" << endl;
return output.str(); return output.str();
} }