lib/map-file-vs.js

// Copyright (c) 2018, Compiler Explorer Authors
// All rights reserved.
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import { MapFileReader } from './map-file';

export class MapFileReaderVS extends MapFileReader {
    /**
     * constructor
     *
     * @param {string} mapFilename
     */
    constructor(mapFilename) {
        super(mapFilename);

        this.regexVsNames = /^\s([\da-f]*):([\da-f]*)\s*([\w$.?@]*)\s*([\da-f]*)(\sf\si\s*|\sf\s*|\s*)([\w.:<>-]*)$/i;
        this.regexVSLoadAddress = /\spreferred load address is ([\da-f]*)/i;
        this.regexVsCodeSegment = /^\s([\da-f]*):([\da-f]*)\s*([\da-f]*)h\s*\.text\$mn\s*code.*/i;
    }

    /**
     *
     * @param {string} line
     */
    tryReadingPreferredAddress(line) {
        const matches = line.match(this.regexVSLoadAddress);
        if (matches) {
            this.preferredLoadAddress = parseInt(matches[1], 16);
        }
    }

    /**
     * Tries to match the given line to code segment information
     *  Matches in order:
     *   1. segment offset info
     *   2. code segment delphi map
     *   3. icode segment delphi map
     *   4. code segment vs map
     *
     * @param {string} line
     */
    tryReadingCodeSegmentInfo(line) {
        let codesegmentObject = false;

        const matches = line.match(this.regexVsCodeSegment);
        if (matches) {
            codesegmentObject = this.addressToObject(matches[1], matches[2]);
            codesegmentObject.id = this.segments.length + 1;
            codesegmentObject.segmentLength = parseInt(matches[3], 16);
            codesegmentObject.unitName = false;

            this.segments.push(codesegmentObject);
        }
    }

    /**
     * Try to match information about the address where a symbol is
     *
     * @param {string} line
     */
    tryReadingNamedAddress(line) {
        let symbolObject = false;

        const matches = line.match(this.regexVsNames);
        if (matches && (matches.length >= 7) && (matches[4] !== '')) {
            const addressWithOffset = parseInt(matches[4], 16);
            symbolObject = {
                segment: matches[1],
                addressWithoutOffset: parseInt(matches[2], 16),
                addressInt: addressWithOffset,
                address: addressWithOffset.toString(16),
                displayName: matches[3],
                unitName: matches[6],
                isStaticSymbol: false,
            };
            this.namedAddresses.push(symbolObject);

            this.setSegmentOffset(symbolObject.segment, symbolObject.addressInt - symbolObject.addressWithoutOffset);

            const segment = this.getSegmentInfoAddressWithoutOffsetIsIn(
                symbolObject.segment,
                symbolObject.addressWithoutOffset);
            if (segment && !segment.unitName) {
                segment.unitName = matches[6];
            }
        }
    }
}