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Annotation of cci/usr/src/bin/cdb/sym.h, revision 1.1

1.1     ! root        1: /* @(#)sym.h   2.3 */
        !             2: #define isymNil        -1L
        !             3: #define isym0  0L
        !             4: 
        !             5: #define bitHigh        (0x80000000)
        !             6: 
        !             7: /* magic number definitions */
        !             8: #define magicImpure    0407            /* impure format */
        !             9: #define magicReadOnly  0410            /* read-only text */
        !            10: #define magicDemand    0413            /* demand load format */
        !            11: #define        magicLpd        0401            /* lpd (UNIX/RT) */
        !            12: #define        magicSplit      0411            /* separated I&D */
        !            13: #define        magicOverlay    0405            /* overlay */
        !            14: 
        !            15: #ifdef SYSIII
        !            16: #ifndef REGULUS
        !            17: 
        !            18: /* stuff directly related to the symbol table */
        !            19: struct exec {  /* a.out header */
        !            20:        short   a_magic;        /* magic number */
        !            21:        uint    a_text;         /* size of text segment */
        !            22:        uint    a_data;         /* size of initialized data */
        !            23:        uint    a_bss;          /* size of uninitialized data */
        !            24:        uint    a_syms;         /* size of symbol table */
        !            25:        uint    a_entry;        /* entry point */
        !            26:        uint    a_stamp;        /* system environment stamp */
        !            27:        uint    a_flag;         /* relocation info stripped */
        !            28: };
        !            29: 
        !            30: /* ***** in invocation of BADMAG macro, argument should not be a function.***/
        !            31: #define        FBadMagic(X) (X.a_magic!=magicReadOnly && X.a_magic!=magicImpure \
        !            32:                   && X.a_magic!=magicLpd && X.a_magic!=magicSplit \
        !            33:                   && X.a_magic!=magicOverlay)
        !            34: 
        !            35: #define CbTextOffset(x) (cbEXECR)
        !            36: #define CbSymOffset(x) ((x).a_text + (x).a_data + CbTextOffset(x))
        !            37: 
        !            38: /* values for type flag */
        !            39: #define        N_UNDF  0       /* undefined */
        !            40: #define        N_ABS   01      /* absolute */
        !            41: #define        N_TEXT  02      /* text symbol */
        !            42: #define        N_DATA  03      /* data symbol */
        !            43: #define        N_BSS   04      /* bss symbol */
        !            44: #define        N_TYPE  037     /* gets JUST the type bits (removes N_EXT) */
        !            45: #define        N_REG   024     /* register name */
        !            46: #define        N_FN    037     /* file name symbol */
        !            47: #define        N_EXT   040     /* external bit, or'ed in */
        !            48: 
        !            49: typedef struct SYMS {  /* same record as `nlist, but with my names */
        !            50:        char    sbSym[8];       /* symbol name */
        !            51:        short   type;           /* type flag */
        !            52:        uint    value;          /* something appropriate to the type */
        !            53:        } SYMR, *pSYMR;
        !            54: #define cbSYMR sizeof(SYMR)
        !            55: 
        !            56: /* then following is replaced by a procedure for BSD41 - see sym.c */
        !            57: #define SbInCore(sb) (sb)
        !            58: /* end of normal SYSIII */
        !            59: 
        !            60: #else
        !            61: 
        !            62: /* stuff directly related to the symbol table */
        !            63: struct exec {  /* a.out header */
        !            64:        short   a_magic;        /* magic number */
        !            65:        long    a_text;         /* size of text segment */
        !            66:        long    a_data;         /* size of initialized data */
        !            67:        long    a_bss;          /* size of uninitialized data */
        !            68:        long    a_syms;         /* size of symbol table */
        !            69:        long    a_stksize;      /* stack size */
        !            70:        long    a_entry;        /* entry point */
        !            71:        short   a_flag;         /* relocation info stripped */
        !            72: };
        !            73: 
        !            74: #define        A_MAGIC1        0x601a          /* normal */
        !            75: #define        A_MAGIC0        0x601c          /* shared text - 2k boundaries */
        !            76: #define        A_MAGIC2        0x601d          /* separated I&D */
        !            77: #define        A_MAGIC3        0x601e          /* shared text - 4k boundaries */
        !            78: /* ***** in invocation of BADMAG macro, argument should not be a function.***/
        !            79: #define        FBadMagic(X) (X.a_magic!=A_MAGIC1 && X.a_magic!=A_MAGIC2 \
        !            80:                   && X.a_magic!=A_MAGIC3 && X.a_magic!=A_MAGIC0)
        !            81: 
        !            82: #define CbTextOffset(x) (cbEXECR)
        !            83: #define CbSymOffset(x) (CbTextOffset(x) + (x).a_text + (x).a_data)
        !            84: 
        !            85: /* values for type flag */
        !            86: #define        N_UNDF  0       /* undefined */
        !            87: #define        N_ABS   040000  /* absolute */
        !            88: #define        N_TEXT  01000   /* text symbol */
        !            89: #define        N_DATA  02000   /* data symbol */
        !            90: #define        N_BSS   0400    /* bss symbol */
        !            91: #define        N_TYPE  053600  /* gets JUST the type bits (removes N_EXT) */
        !            92: #define        N_REG   010000  /* register name */
        !            93: #define        N_FN    0200    /* file name symbol */
        !            94: #define        N_EXT   020000  /* external bit, or'ed in */
        !            95: 
        !            96: typedef struct SYMS {  /* same record as `nlist, but with my names */
        !            97:        char    sbSym[8];       /* symbol name */
        !            98:        short   type;           /* type flag */
        !            99:        ulong   value;          /* something appropriate to the type */
        !           100:        } SYMR, *pSYMR;
        !           101: #define cbSYMR sizeof(SYMR)
        !           102: 
        !           103: /* then following is replaced by a procedure for BSD41 - see sym.c */
        !           104: #define SbInCore(sb) (sb)
        !           105: /* end of REGULUS */
        !           106: #endif
        !           107: /* end of SYSIII stuff */
        !           108: #endif
        !           109: 
        !           110: #ifdef BSD41
        !           111: extern char * SbInCore();
        !           112: 
        !           113: struct exec {
        !           114:         long    a_magic;        /* magic number */
        !           115:        ulong   a_text;         /* size of text segment */
        !           116:        ulong   a_data;         /* size of initialized data */
        !           117:        ulong   a_bss;          /* size of uninitialized data */
        !           118:        ulong   a_syms;         /* size of symbol table */
        !           119:        ulong   a_entry;        /* entry point */
        !           120:        ulong   a_trsize;       /* size of text relocation */
        !           121:        ulong   a_drsize;       /* size of data relocation */
        !           122: };
        !           123: 
        !           124: #define FBadMagic(x) \
        !           125:     (((x).a_magic)!=magicImpure \
        !           126:     && ((x).a_magic)!=magicReadOnly \
        !           127:     && ((x).a_magic)!=magicDemand)
        !           128: 
        !           129: #ifdef SUN
        !           130: #define CbTextOffset(x) ((x).a_magic==magicDemand ? 2048 : cbEXECR)
        !           131: #else
        !           132: #define CbTextOffset(x) ((x).a_magic==magicDemand ? 1024 : cbEXECR)
        !           133: #endif
        !           134: 
        !           135: #define CbSymOffset(x) \
        !           136:         (CbTextOffset(x) + (x).a_text+(x).a_data + (x).a_trsize+(x).a_drsize)
        !           137: #define CbStrOffset(x) (CbSymOffset(x) + (x).a_syms)
        !           138: 
        !           139: typedef struct  SYMS { /* berkeley `nlist', almost */
        !           140:        long    sbSym;          /* not an `sb', an index into string space */
        !           141:        uchar   type;           /* type flag, i.e. N_TEXT etc; see below */
        !           142:         char    other;         /* unused */
        !           143:         short   desc;          /* see <stab.h> */
        !           144:        ulong   value;          /* value of this symbol (or sdb offset) */
        !           145:        } SYMR, *pSYMR;
        !           146: #define cbSYMR sizeof(SYMR)
        !           147: 
        !           148: /*
        !           149:  * Simple values for n_type.
        !           150:  */
        !           151: #define N_UNDF  0x0            /* undefined */
        !           152: #define N_ABS   0x2            /* absolute */
        !           153: #define N_TEXT  0x4            /* text */
        !           154: #define N_DATA  0x6            /* data */
        !           155: #define N_BSS   0x8            /* bss */
        !           156: #define N_FN    0x1f           /* file name symbol */
        !           157: 
        !           158: #define N_EXT   01             /* external bit, or'ed in */
        !           159: #define N_TYPE  0x1e           /* mask for all the type bits */
        !           160: 
        !           161: #define N_STAB  0xe0           /* if any of these bits set, a SDB entry */
        !           162: /* end of BSD41 */
        !           163: #endif
        !           164: 
        !           165: #define symNil ((pSYMR)0)

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