Manual page for end(3C)
end, _end, etext, _etext, edata, _edata - last locations in program
SYNOPSIS
extern _etext;
extern _edata;
extern _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 program text.
- _edata
-
The address of
_edata
is the first location after the initialized data region.
- _end
-
The address of
_end
is the first location after the uninitialized data region.
SEE ALSO
cc.1b
brk.2
malloc.3c
stdio.3s
NOTE
When execution begins, the program break
(the first location beyond the data)
coincides with
_end,
but the program break may be reset by
the routines
brk(),
malloc(),
the standard input/output library
(see
stdio.3s
by the profile (-p)
option of
cc.1b
and so on.
Thus, the current value of the program break
should be determined by
sbrk ((char *)0)
(see
brk.2
References to
end,
etext,
and
edata,
without a preceding underscore
can be made by the user;
if this case is detected the symbol will be aliased to the associated
symbol which begins with the underscore.
Created by unroff & hp-tools.
© by Hans-Peter Bischof. All Rights Reserved (1997).
Last modified 21/April/97
