[TUHS] Design of the AT&T assembly syntax

[Alexander Voropay]

Robert Clausecker <fuz at fuz.su>wrote:

> The one thing in this chain I have never found is an AT&T style
> assembler for x86 before ELF was introduced.

There were alot of AT&T codebase ports to x86 architecture except Xenix:
Microport, INTERACTIVE, Everex, Wyse e.t.c. using AT&T x86 syntax.

I've tried Microport SystemV /386 (SysV R3.2). It uses COFF
as format for executables:
See:
http://www.vcfed.org/forum/showthread.php?67736-History-behind-the-disk-images-of-AT-amp-T-UNIX-System-V-Release-4-Version-2-1-for-386&p=560039#post560039
(Rather interesting kernel ABI/Call convention)

and
https://gunkies.org/wiki/Unix_SYSVr3

There were also SystemV R2 to i286 ports i.e.:
https://gunkies.org/wiki/Microport_System_V
with a.out binary format.