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Annotation of cci/usr/src/bin/cdb/initsym.c, revision 1.1

1.1     ! root        1: static char sccsid[] = "@(#)initsym.c  2.5";
        !             2: 
        !             3: #include <sys/types.h>
        !             4: #ifndef REGULUS
        !             5: #include <sys/stat.h>
        !             6: #include <core.h>
        !             7: #else
        !             8: #include <stat.h>
        !             9: #endif
        !            10: 
        !            11: #ifndef BSD41
        !            12: #define SYSTYPES 1     /* see basic.h */
        !            13: #endif
        !            14: #ifdef SUN
        !            15: #define SYSTYPES 1     /* see basic.h */
        !            16: #endif
        !            17: #include "cdb.h"
        !            18: 
        !            19: #ifdef BSD41
        !            20: #include <pagsiz.h>
        !            21: #endif
        !            22: 
        !            23: export long    vmtimeSym;      /* last modification time of vsbSymfile */
        !            24: export int     vmagicSym;      /* magic number of the Sym file */
        !            25: export MAPR    vmapText;
        !            26: 
        !            27: typedef struct exec EXECR, *pEXECR;
        !            28: #define cbEXECR sizeof(EXECR)
        !            29: 
        !            30: #define cbFileMax      1L<<24
        !            31: 
        !            32: 
        !            33: /* C B L   F   F N */
        !            34: 
        !            35: export long CblFFn(fn)
        !            36: int    fn;
        !            37: {
        !            38:        struct stat statbuf;
        !            39: 
        !            40:        fstat(fn, &statbuf);
        !            41:        return(statbuf.st_size);
        !            42: } /* CblFFn */
        !            43: 
        !            44: 
        !            45: /* A G E   F   F N */
        !            46: 
        !            47: export long AgeFFn(fn)
        !            48: int    fn;
        !            49: {
        !            50:        struct stat statbuf;
        !            51: 
        !            52:        fstat(fn, &statbuf);
        !            53:        return(statbuf.st_mtime);
        !            54: } /* AgeFFn */
        !            55: 
        !            56: 
        !            57: /* I N I T   S Y M F I L E */
        !            58: 
        !            59: local void InitSymfile(sbFile)
        !            60: char   *sbFile;
        !            61: {
        !            62:        long    cbData, cbText;
        !            63:        EXECR   execSym;
        !            64: 
        !            65: /* printf("Opening file %s\n", sbFile); */
        !            66:        vfnSym = open(sbFile, O_RDONLY);
        !            67:        if (vfnSym < 0) {
        !            68:                perror(sbFile);
        !            69:                exit(1);
        !            70:        } /* if */
        !            71:        vmtimeSym = AgeFFn(vfnSym);
        !            72:        vsbSymfile = sbFile;
        !            73: 
        !            74:        vmapText.fn = vfnSym;
        !            75:        if (read(vfnSym, &execSym, cbEXECR) != cbEXECR)
        !            76:                Panic("Cannot read header of %s", sbFile);
        !            77:        if (FBadMagic(execSym))
        !            78:                Panic("Bad Magic number in %s", sbFile);
        !            79: 
        !            80:        vmagicSym = execSym.a_magic;
        !            81: #ifndef BSD41
        !            82:        if (vmagicSym == magicReadOnly) {
        !            83:                printf("WARNING: Instructions are READ ONLY!\n");
        !            84:                printf("         This means you CANNOT set breakpoints!\n");
        !            85:        } /* if */
        !            86: #endif
        !            87:        visymMax = execSym.a_syms / cbSYMR;
        !            88:        cbData = execSym.a_data;
        !            89:        cbText = execSym.a_text;
        !            90: 
        !            91: #ifndef REGULUS
        !            92:        /* regulus does not do core dumps, so we will never look at symfile */
        !            93: 
        !            94:        vmapText.f1 = CbTextOffset(execSym);    /* standard offset */
        !            95:        vmapText.b1 = 0;                /* section 1 always includes address 0 */
        !            96:        vmapText.e1 = cbText;   /* section one is text */
        !            97:        /* the sym file use section 1 ONLY! - data is in child or core file */
        !            98:        vmapText.f2 = vmapText.b2 = vmapText.e2 = 0;
        !            99: #ifdef SYSIII
        !           100:        /* following is due to bug in ONYX C compiler */
        !           101:        vcbSymFirst = cbText + cbData + CbTextOffset(execsym);
        !           102: #endif
        !           103: #ifdef BSD41
        !           104:        vcbSymFirst = CbSymOffset(execSym);
        !           105:        vcbSbFirst = CbStrOffset(execSym);
        !           106:        vissMax = CblFFn(vfnSym) - vcbSbFirst;
        !           107:        /* size of string space (is this right?) */
        !           108: #endif
        !           109: #endif
        !           110: } /* InitSymfile */

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