syms(4) 						     Kernel Interfaces Manual							   syms(4)

NAME

       syms - Symbol table

SYNOPSIS

       #include <sym.h>
       #include <symconst.h>

DESCRIPTION

       The symbol table departs from the standard COFF symbol table. The symbol table consists of many tables unbundling information usually found
       in the one COFF symbol table.  The symbol table should be viewed as a handcrafted, network-style database designed  for	space  and  access
       efficiency.

       The following structures or tables appear in the symbol table:

       --------------------------------------------------------------------------
       Table		       Contents
       --------------------------------------------------------------------------
       Symbolic header	       Sizes and locations of all other tables
       File descriptors        Per file locations for other tables
       Procedure descriptors   Frame   information  and  location  of  procedure
			       information
       Local symbols	       Local type, local variable, and scoping	informa-
			       tion
       Local strings	       String space for local symbols
       Line numbers	       Compacted   by  encoding,  contains  a  line  per
			       instruction
       Relative file desc.     Indirection for inter-file symbol access
       Optimization symbols    To be defined
       Auxiliary symbols       Data type information for local and external sym-
			       bols
       External symbols        Global text and data symbols
       External strings        String space for external symbols
       Dense numbers	       Index  pairs  (file,  symbol)  for  compiler  use
			       (-oldc only)
       --------------------------------------------------------------------------

       External and local symbols are both represented using the following structure:

       struct {
	   long      iss;    /* index into string space */
	   long      value;  /* address, size, etc.; depends on sc and st */
	   unsigned  st: 6;  /* symbol type (e.g., local, param, etc.) */
	   unsigned  sc: 5;  /* storage class (e.g., text, bss, etc.) */
	   unsigned  reserved: 1;
	   unsigned  index;  /* index to symbol or auxiliary tables */ };

RELATED INFORMATION

       ldfcn(4).  delim off

																	   syms(4)