Manual Pages for UNIX Operating System command usage for man etext

Standard C Library Functions                              end(3C)



NAME
     end, _end, etext, _etext, edata, _edata - last locations  in
     program

SYNOPSIS
     extern int _etext;


     extern int _edata;


     extern int _end;


DESCRIPTION
     These names refer neither to routines nor to locations  with
     interesting contents; only their addresses are meaningful.

     _etext    The address of _etext is the first location  after
               the last read-only loadable segment.


     _edata    The address of _edata is the first location  after
               the last read-write loadable segment.


     _end      If the address  of  _edata  is  greater  than  the
               address  of _etext, the address of _end is same as
               the address of _edata.

               If the address  of  _etext  is  greater  than  the
               address  of  _edata, the address of _end is set to
               the page boundary after the address pointed to  by
               _etext.


USAGE
     When execution begins, the program break (the first location
     beyond  the data) coincides with _end, but the program break
     can be reset by the brk(2),  malloc(3C),  and  the  standard
     input/output  library (see stdio(3C)), functions by the pro-
     file (-p) option of  cc, and so on. Thus, the current  value
     of  the  program  break  should be determined by sbrk ((char
     *)0).


     References to end, etext, and  edata,  without  a  preceding
     underscore  will  be  aliased  to the associated symbol that
     begins with the underscore.

SEE ALSO




SunOS 5.11          Last change: 31 Mar 2006                    1






Standard C Library Functions                              end(3C)



     brk(2), malloc(3C), stdio(3C)






















































SunOS 5.11          Last change: 31 Mar 2006                    2