END(3)                  NetBSD Library Functions Manual                 END(3)

NAME
     end, etext, edata -- end boundaries of image segments

SYNOPSIS
     extern int end;
     extern int etext;
     extern int edata;

DESCRIPTION
     The globals end, etext and edata are program segment end addresses.

     etext is located at the first address after the end of the text segment.

     edata is located at the first address after the end of the initialized
     data segment.

     end is located at the first address after the end of the data segment
     (BSS) when the program is loaded.  Use the sbrk(2) system call with zero
     as its argument to find the current end of the data segment.

SEE ALSO
     sbrk(2), malloc(3), a.out(5)

HISTORY
     An end manual page appeared in Version 6 AT&T UNIX.

BUGS
     Traditionally, no variable existed that pointed to the start of the text
     segment because the text segment always started at address zero.
     Although it is no longer valid to make this assumption, no variable simi-
     lar to the ones documented above exists to point to the start of the text
     segment.

NetBSD 7.0                     September 1, 2005                    NetBSD 7.0

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