stcu(3X)

NAME
     stcu - Routines that provide a compilation unit symbol table interface

SYNOPSIS
     #include <syms.h>

     "pCHDRR st_cuinit(void);

     "void st_setchdr(pCHDRR pchdr);

     "pCHDRR st_currentpchdr(void);

     "void st_free(void);

     "long st_extadd(long iss, long value, long st, long sc, long index);

     "pEXTR st_pext_iext(long iext);

     "pEXTR st_pext_rndx(RNDXR rndx);

     "long st_iextmax(void);

     "long st_extstradd(char *str);

     "char *st_str_extiss(long iss);

     "long st_idn_index_fext(long index, long fext);

     "long st_idn_rndx(RNDXR rndx);

     "pRNDXR st_pdn_idn(long idn);

     "RNDXR st_rndx_idn(long idn);

     "void st_setidn(long idndest, long idnsrc);

IMPLEMENTATION
     IRIX systems (o32 ABI only)

DESCRIPTION
     The stcu routines provide an interface to objects that occur once per
     object rather than once per file descriptor (for example, external
     symbols, strings, and dense numbers).  The routines provide access to
     the current chdr (compile time hdr), which represents the symbol table
     in running processes with pointers to symbol table sections rather
     than indices and offsets used in the disk file representation.

     A new symbol table can be created with st_cuinit.  This routine
     creates and initializes a CHDRR (see <cmplrs/stsupport.h>).  The CHDRR
     is the current chdr and is used in all later calls.  NOTE:  A chdr can
     also be created with the read routines [see stio(3x)].  The 2st_cuinit
     routine returns a pointer to the new CHDRR record.

     st_currentchdr
             Returns a pointer to the current chdr.

     st_setchdr
             Sets the current chdr to the pchdr argument and sets the per
             file structures to reflect a change in symbol tables.

     st_free Frees all constituent structures associated with the current
             chdr.

     st_extadd
             Lets you add to the externals table.  It returns the index to
             the new external for future reference and use.  The ifd field
             for the external is filled in by the current file [see
             stfd(3)].  For more details on the parameters, see <sym.h>.

     st_pext_iext
     st_pext_rndx
             Returns pointers to the external, given a index referencing
             them.  The latter routine requires a relative index where the
             index field should be the index in external symbols and the
             rfd field should be the constant ST_EXTIFD.

     NOTE:  The externals contain the same structure as symbols (see the
     SYMR and EXTR definitions).

     st_iextmax
             Returns the current number of entries in the external symbol
             table.

     The iss field in external symbols (the index into string space) must
     point into external string space.

     st_extstradd
             Adds a null-terminated string to the external string space and
             returns its index.

     st_str_extiss
             Converts that index into a pointer to the external string.

     The dense number table provides a convenience to the code optimizer,
     generator, and assembler.  This table lets them reference symbols from
     different files and externals with unique densely packed numbers.

     st_idn_index_fext
             Returns a new dense number table index, given an index into
             the symbol table of the current file (or if fext is set, the
             externals table).

     st_idn_rndx
             Returns a new dense number, but expects a RNDXR (see <sym.h>)
             to specify both the file index and the symbol index rather
             than implying the file index from the current file.  The RNDXR
             contains two fields:  an index into the externals table and a
             file index (rsyms can point into the symbol table, as well).
             The file index is ST_EXTIFD (see <cmplrs/stsupport.h>) for
             externals.

     st_rndx_idn
             Returns a RNDX, given an index into the dense number table.

     st_pdn_idn
             Returns a pointer to the RNDXR index by the idni argument.

     The programs must be loaded with the object file access routine
     library libmld.a.

SEE ALSO
     stfe(3x), stfd(3x)

     This man page is available only online.