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The "Sierpinski Triangle" example.
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@FlatAssembler
FlatAssembler authored Jun 13, 2020
1 parent b1abbcc commit 16b1202
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Showing 2 changed files with 52 additions and 19 deletions.
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71 changes: 52 additions & 19 deletions control.js
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Original file line number Diff line number Diff line change
Expand Up @@ -3,23 +3,35 @@ var hasElse = [];
isAssembly = false;
function compileString(str) {
str = str.replace(/^\s*/, "");
var commentSign;
if (/^syntax\s*gas/i.test(str)) {
syntax = "gas";
return;
} else if (/^syntax\s*fasm/i.test(str)) {
syntax = "fasm";
return;
} else if (/^syntax\s/i.test(str))
throw "Driver error: Unrecognized syntax name!";
if (syntax == "fasm") commentSign = ";";
else if (syntax == "gas") commentSign = "#";
else throw 'Driver error: Unrecognized syntax name "' + syntax + '"!';
if (/^AsmEnd/.test(str)) {
asm(";" + str);
asm(";Inline assembly ended.");
asm(commentSign + str);
asm(commentSign + "Inline assembly ended.");
isAssembly = false;
return;
}
if (/^AsmStart/.test(str)) {
isAssembly = true;
asm(";" + str);
asm(";Inline assembly begins.");
asm(commentSign + str);
asm(commentSign + "Inline assembly begins.");
return;
}
if (isAssembly) {
asm(str);
return;
}
asm(";" + str);
asm(commentSign + str);
if (!str || str[0] == ";") return;
var isString = false;
for (var i = 0; i < str.length; i++)
Expand All @@ -29,21 +41,28 @@ function compileString(str) {
str = str.substr(0, i - 1);
break;
}
if (syntax == "gas") asm(".intel_syntax noprefix");
asm("finit");
if (str.indexOf("<=") + 1) {
var constantName = str.substr(0, str.indexOf("<="));
constantName = constantName.replace(/\s*$/, "");
var constantValue = str.substr(str.indexOf("<=") + "<=".length);
asm("jmp " + constantName + "$");
asm(constantName + " db " + constantValue);
if (syntax == "fasm") asm(constantName + " db " + constantValue);
else {
asm(constantName + ":");
asm(".ascii " + constantValue);
}
asm(constantName + "$:");
} else if (str.indexOf(":=") + 1) {
var variableName = str.substr(0, str.indexOf(":="));
variableName = variableName.replace(/\s*$/, "");
var arth = str.substr(str.indexOf(":=") + ":=".length);
parseArth(tokenizeArth(arth)).compile();
asm("fstp dword [result]");
asm("mov edx, dword [result]");
if (syntax == "fasm") asm("fstp dword [result]");
else asm("fstp dword ptr [result]");
if (syntax == "fasm") asm("mov edx, dword [result]");
else asm("mov edx, dword ptr [result]");
if (variableName.indexOf("[") + 1 || variableName.indexOf("(") + 1) {
var indexOfBracket =
(variableName.indexOf("[") + 1 || variableName.indexOf("(") + 1) - 1;
Expand All @@ -54,15 +73,23 @@ function compileString(str) {
variableName.length - indexOfBracket - 2
);
parseArth(tokenizeArth(subscript)).compile();
asm("fistp dword [result]");
asm("mov ebx, dword [result]");
asm("mov dword [" + arrayName + "+4*ebx],edx");
} else asm("mov dword [" + variableName + "],edx");
if (syntax == "fasm") asm("fistp dword [result]");
else asm("fistp dword ptr [result]");
if (syntax == "fasm") asm("mov ebx, dword [result]");
else asm("mov ebx, dword ptr [result]");
if (syntax == "fasm") asm("mov dword [" + arrayName + "+4*ebx],edx");
else asm("mov dword ptr [" + arrayName + "+4*ebx],edx");
} else {
if (syntax == "fasm") asm("mov dword [" + variableName + "],edx");
else asm("mov dword ptr [" + variableName + "],edx");
}
} else if (/^If\s/.test(str)) {
var arth = str.substr("If ".length);
parseArth(tokenizeArth(arth)).compile();
asm("fistp dword [result]");
asm("mov eax, dword [result]");
if (syntax == "fasm") asm("fistp dword [result]");
else asm("fistp dword ptr [result]");
if (syntax == "fasm") asm("mov eax, dword [result]");
else asm("mov eax, dword ptr [result]");
asm("test eax,eax");
var label1 = "ElseLabel" + Math.floor(Math.random() * 1000000);
var label2 = "EndIfLabel" + Math.floor(Math.random() * 1000000);
Expand All @@ -83,8 +110,10 @@ function compileString(str) {
asm(labelOfElse + ":");
var arth = str.substr("ElseIf ".length);
parseArth(tokenizeArth(arth)).compile();
asm("fistp dword [result]");
asm("mov eax, dword [result]");
if (syntax == "fasm") asm("fistp dword [result]");
else asm("fistp dword ptr [result]");
if (syntax == "fasm") asm("mov eax, dword [result]");
else asm("mov eax, dword ptr [result]");
asm("test eax,eax");
var newLabelOfElse = "ElseLabel" + Math.floor(Math.random() * 1000000);
stack.push(labelOfEndIf);
Expand All @@ -105,8 +134,10 @@ function compileString(str) {
asm(label1 + ":");
parseArth(tokenizeArth(arth)).compile();
var label2 = "EndWhileLabel" + Math.floor(Math.random() * 1000000);
asm("fistp dword [result]");
asm("mov eax, dword [result]");
if (syntax == "fasm") asm("fistp dword [result]");
else asm("fistp dword ptr [result]");
if (syntax == "fasm") asm("mov eax, dword [result]");
else asm("mov eax, dword ptr [result]");
asm("test eax,eax");
asm("je " + label2);
stack.push(label2);
Expand All @@ -117,6 +148,8 @@ function compileString(str) {
asm(endWhileLabel + ":");
} else {
parseArth(tokenizeArth(str)).compile();
asm("fstp dword [result]");
if (syntax == "fasm") asm("fstp dword [result]");
else asm("fstp dword ptr [result]");
}
if (syntax == "gas") asm(".att_syntax");
}

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