end(3c)                    DG/UX 4.30                     end(3c)



     NAME
          end, etext, edata - last locations in program

     SYNOPSIS
          extern end;
          extern etext;
          extern edata;

     DESCRIPTION
          These names refer to memory locations that demarcate a
          program:

          etext, etext
                    The first address above the program text.

          edata, edata
                    The first address above the initialized data
                    region.

          end, end
                    The first address above the uninitialized data
                    region.

          In addition these names are also provided:

          .text.start
                    The first address of program text.

          .text.end
                    The first address above the program text.

          .data.start
                    The first address of the initialized data region.

          .data.end
                    The first address above the initialized data
                    region.

          .bss.start
                    The first address of the uninitialized data
                    region.

          .bss.end
                    The first address above the uninitialized data
                    region.

          When execution begins, the program break (the first location
          beyond the data) coincides with end, but you can reset it
          with brk(2), malloc(3C), stdio(3S) (standard input/output),
          the profile (-p) option of cc(1), and so on.  Thus, you can
          find out the current value of the program break by calling
          the sbrk(2) system call with a value of 0.  (see sbrk(2)).



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     SEE ALSO
          brk(2), sbrk(2), malloc(3C), stdio(3S).
          cc(1) in the Programmer's Reference for the DG/UX System




















































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