tail head cat sleep
QR code linking to this page

Manual Pages  — END

NAME

end, etext, edata – end boundaries of image segments

CONTENTS

SYNOPSIS

extern end;
extern etext;
extern edata;

DESCRIPTION

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

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

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

end is 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 AT&T v6 .

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 Although it is no longer valid to make this assumption, no variable similar to the ones documented above exists to point to the start of the text segment.

END (3) August 28, 2000

tail head cat sleep
QR code linking to this page


Please direct any comments about this manual page service to Ben Bullock. Privacy policy.

Today, the Unix equivalent of a power drill would have 20 dials and switches, come with a nonstandard plug, require the user to hand-wind the motor coil, and not accept 3/8" or 7/8" drill bits (though this would be documented in the BUGS section of its instruction manual).
— The Unix Haters' handbook