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Annotation of 42BSD/ucb/pascal/pdx/mappings/objaddr.c, revision 1.1

1.1     ! root        1: /* Copyright (c) 1982 Regents of the University of California */
        !             2: 
        !             3: static char sccsid[] = "@(#)objaddr.c 1.2 2/17/82";
        !             4: 
        !             5: /*
        !             6:  * Lookup the object address of a given line from the named file.
        !             7:  *
        !             8:  * Potentially all files in the file table need to be checked
        !             9:  * until the line is found since a particular file name may appear
        !            10:  * more than once in the file table (caused by includes).
        !            11:  */
        !            12: 
        !            13: #include "defs.h"
        !            14: #include "mappings.h"
        !            15: #include "object.h"
        !            16: #include "source.h"
        !            17: #include "filetab.h"
        !            18: #include "linetab.h"
        !            19: 
        !            20: ADDRESS objaddr(line, name)
        !            21: LINENO line;
        !            22: char *name;
        !            23: {
        !            24:     register FILETAB *ftp;
        !            25:     register LINENO i, j;
        !            26:     BOOLEAN foundfile;
        !            27: 
        !            28:     if (nlhdr.nlines == 0) {
        !            29:        return(-1);
        !            30:     }
        !            31:     if (name == NULL) {
        !            32:        name = cursource;
        !            33:     }
        !            34:     foundfile = FALSE;
        !            35:     for (ftp = &filetab[0]; ftp < &filetab[nlhdr.nfiles]; ftp++) {
        !            36:        if (streq(ftp->filename, name)) {
        !            37:            foundfile = TRUE;
        !            38:            i = ftp->lineindex;
        !            39:            if (ftp == &filetab[nlhdr.nfiles-1]) {
        !            40:                j = nlhdr.nlines;
        !            41:            } else {
        !            42:                j = (ftp + 1)->lineindex;
        !            43:            }
        !            44:            while (i < j) {
        !            45:                if (linetab[i].line == line) {
        !            46:                    return linetab[i].addr;
        !            47:                }
        !            48:                i++;
        !            49:            }
        !            50:        }
        !            51:     }
        !            52:     if (!foundfile) {
        !            53:        error("unknown source file \"%s\"", name);
        !            54:     }
        !            55:     return(-1);
        !            56: }

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