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https://github.com/simon987/Much-Assembly-Required.git
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optimized and modularized 'parseInstruction' function
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cathulhu
parent
a85e672eb9
commit
ec4424b435
203
Server/src/main/resources/static/js/editor.js
vendored
203
Server/src/main/resources/static/js/editor.js
vendored
@ -260,136 +260,95 @@ function getOperandType(text, result) {
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}
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function resultObjectBuilder (passedText)
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{
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let resultObject = {row: currentLine, column: 0, type: "error", text: passedText}
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return resultObject
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}
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function instructionAnalyzer (passedCurrentLine, passedResult, passedMnemonic)
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{
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//const allInstructions = "mov|add|sub|and|or|test|cmp|shl|shr|mul|push|pop|div|xor|hwi|hwq|nop|neg|seta|setnbe|setae|setnb|setnc|setbe|setna|setb|setc|setnae|sete|setz|setne|setnz|setg|setnle|setge|setnl|setle|setng|setl|setnge|seto|setno|sets|setns|call|ret|jmp|jnz|jg|jl|jge|jle|int|jz|js|jns|brk|not|jc|jnc|ror|rol|sal|sar|jo|jno|inc|dec|rcl|xchg|rcr|pushf|popf|ja|jna".split("|");
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const twoArgInstructions = "mov|add|sub|and|or|test|cmp|shl|shr|xor|rol|ror|sal|sar|rcl|xchg|rcr".split("|");
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const oneArgInstructions = "push|mul|pop|div|neg|call|jnz|jg|jl|jge|jle|hwi|hwq|jz|js|jns|ret|jmp|not|jc|jnc|jo|jno|inc|dec|ja|jna|seta|setnbe|setae|setnb|setnc|setbe|setna|setb|setc|setnae|sete|setz|setne|setnz|setg|setnle|setge|setnl|setle|setng|setl|setnge|seto|setno|sets|setns".split("|");
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const zeroArgInstructions = "brk|into|iret|nop|popf|pushf|ret"
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const nonImmediateSet = "seta|setnbe|setae|setnb|setnc|setbe|setna|setb|setc|setnae|sete|setz|setne|setnz|setg|setnle|setge|setnl|setle|setng|setl|setnge|seto|setno|sets|setns".split("|")
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//there are some duplicates here but it doesn't matter since we are just trying to find membership
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const concatenatedInstructions = twoArgInstructions + oneArgInstructions + zeroArgInstructions
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const instructionsByArgCount = [zeroArgInstructions, oneArgInstructions, twoArgInstructions]
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let tokens = getTokens(passedCurrentLine) // get the actual tokens
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tokens.shift() //removing the first element from array, since that's the mnemonic and we already have that
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const tokenCount = tokens.length()
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//select which set of instructions are admissable for this number of arguments
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correspondingInstructionSet = instructionsByArgCount[tokenCount]
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if (correspondingInstructionSet.includes(passedMnemonic)) {
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//this means that for the number of arguments is valid for this opcode, and that the code itself is a recognized code
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//handle cases for forbidden use of immediate values in one and two token cases
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if (tokenCount === 2 && getOperandType(tokens[0] === OPERAND_IMM)) {
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//fail because destination operand can't be immediate value
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passedResult.annotations.push(resultObjectBuilder("Destination operand for: " + passedMnemonic + " can't be an immediate value"))
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return
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}
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else if (tokenCount === 1 && nonImmediateSet.includes(passedMnemonic) && getOperandType(tokens[0] === OPERAND_IMM)) {
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passedResult.annotations.push(resultObjectBuilder("Invalid operand type for: " + passedMnemonic + " operand must not be immediate value"))
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return
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}
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for (string in tokens) {
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if (getOperandType(tokens[string]) === OPERAND_INVALID){
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//fail for invalid operand type
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passedResult.annotations.push(resultObjectBuilder("Invalid operand type: " + passedMnemonic))
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return
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}
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}
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//if we make it here then the operation type is a valid operation, the opcode is recognized, and the number of arguments is correct so why did we fail?
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}
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else if (concatenatedInstructions.includes(passedMnemonic)) {
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//wrong number of arguments for instruction, but it is SOMEWHERE in this list so it's got to be one of these 3 values
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let expectedNumber = 0
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if ( twoArgInstructions.includes(passedMnemonic) ) { expectedNumber=2}
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else if ( oneArgInstructions.includes(passedMnemonic) ) { expectedNumber=1}
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else { expectedNumber=0 }
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passedResult.annotations.push(resultObjectBuilder("Incorrect number of arguments for instruction: " + passedMnemonic + ", expected: " + expectedNumber + " Found: " + tokenCount))
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return
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}
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else {
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//unknown / invalid instruction failure
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passedResult.annotations.push(resultObjectBuilder("Unknown mneomonic: " + passedMnemonic))
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return
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}
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}
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function parseInstruction(line, result, currentLine) {
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line = removeComment(line);
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line = removeLabel(line);
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var tokens = getTokens(line);
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var mnemonic = tokens[0];
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//handle abort cases
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if (mnemonic === undefined || mnemonic === "") {
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return; //Line is empty
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return; //Line is empty, no instructions to process
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}
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if (!parseDWInstruction(line, result, currentLine)) {
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if (new RegExp('\\b(?:mov|add|sub|and|or|test|cmp|shl|shr|mul|push|pop|div|xor|hwi|hwq|nop|neg|' +
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'seta|setnbe|setae|setnb|setnc|setbe|setna|setb|setc|setnae|sete|setz|setne|setnz|setg|setnle|setge|setnl|setle|setng|setl|setnge|seto|setno|sets|setns|' +
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'call|ret|jmp|jnz|jg|jl|jge|jle|int|jz|js|jns|brk|not|jc|jnc|ror|rol|sal|sar|jo|jno|inc|dec|rcl|xchg|rcr|pushf|popf|ja|jna)\\b').test(mnemonic.toLowerCase())) {
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if (line.indexOf(",") !== -1) {
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//2 Operands
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var strO1 = line.substring(line.indexOf(mnemonic) + mnemonic.length, line.indexOf(','));
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var strO2 = line.substring(line.indexOf(',') + 1).trim();
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//Validate operand number
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if (!new RegExp('\\b(?:mov|add|sub|and|or|test|cmp|shl|shr|xor|rol|ror|sal|sar|rcl|xchg|rcr)\\b').test(mnemonic.toLowerCase())) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: mnemonic + " instruction with 2 operands is illegal",
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type: "error"
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});
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return;
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}
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//Validate operand type
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var o1Type = getOperandType(strO1, result);
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var o2Type = getOperandType(strO2, result);
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if (o1Type === OPERAND_INVALID) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Invalid operand: " + strO1,
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type: "error"
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});
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return;
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}
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if (o2Type === OPERAND_INVALID) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Invalid operand: " + strO2,
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type: "error"
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});
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return;
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}
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//Check for illegal operand combos:
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if (o1Type === OPERAND_IMM) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Destination operand can't be an immediate value",
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type: "error"
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});
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}
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} else if (tokens.length > 1) {
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//1 Operand
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strO1 = line.substring(line.indexOf(mnemonic) + mnemonic.length).trim();
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//Validate operand number
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if (!new RegExp('\\b(?:push|mul|pop|div|neg|call|jnz|jg|jl|jge|jle|hwi|hwq|jz|js|jns|ret|jmp|not|jc|jnc|jo|jno|inc|dec|ja|jna|seta|setnbe|setae|setnb|setnc|setbe|setna|setb|setc|setnae|sete|setz|setne|setnz|setg|setnle|setge|setnl|setle|setng|setl|setnge|seto|setno|sets|setns)\\b').test(mnemonic.toLowerCase())) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: mnemonic + " instruction with 1 operand is illegal",
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type: "error"
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});
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return;
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}
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//Validate operand type
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if (getOperandType(strO1, result) === OPERAND_INVALID) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Invalid operand: " + strO1,
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type: "error"
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});
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}
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if (new RegExp('\\b(?:seta|setnbe|setae|setnb|setnc|setbe|setna|setb|setc|setnae|sete|setz|setne|setnz|setg|setnle|setge|setnl|setle|setng|setl|setnge|seto|setno|sets|setns)\\b').test(mnemonic.toLowerCase())) {
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if (getOperandType(strO1, result) === OPERAND_IMM) {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Invalid operand type: " + strO1,
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type: "error"
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});
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}
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}
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} else {
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//No operand
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if (!new RegExp('\\b(?:ret|brk|nop|pushf|popf)\\b').test(mnemonic.toLowerCase())) {
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//Validate operand number
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: mnemonic + " instruction with no operand is illegal",
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type: "error"
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});
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}
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}
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} else {
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result.annotations.push({
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row: currentLine,
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column: 0,
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text: "Unknown mnemonic: " + mnemonic,
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type: "error"
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});
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}
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//if the command works then we're done here
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if (parseDWInstruction(line, result, currentLine)) {
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//succesfull parsing, no errors to analyze
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return
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}
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var mnemonic = getTokens(line)[0]; //this is the instruction IE opcode, like mov, add, pop, etc...
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instructionAnalyzer(line, result, mnemonic)
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return
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}
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function parse() {
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