Chapter 44.

Acknowledgements

If you have contributed to

as

and your name isn't listed here, it is not meant as a slight. We just don't

know about it. Send mail to the maintainer, and we'll correct the situation. Currently the maintainer is

Ken Raeburn (email address

raeburn@cygnus.com

).

Dean Elsner wrote the original gnu assembler for the VAX.

1

Jay Fenlason maintained GAS for a while, adding support for GDB specific debug information and

the 68k series machines, most of the preprocessing pass, and extensive changes in

messages.c

,

input file.c

,

write.c

.

K. Richard Pixley maintained GAS for a while, adding various enhancements and many bug fixes,

including merging support for several processors, breaking GAS up to handle multiple object file

format back ends (including heavy rewrite, testing, an integration of the coff and b.out back ends),

adding configuration including heavy testing and verification of cross assemblers and file splits and

renaming, converted GAS to strictly ANSI C including full prototypes, added support for m680[34]0

and cpu32, did considerable work on i960 including a COFF port (including considerable amounts of

reverse engineering), a SPARC opcode file rewrite, DECstation, rs6000, and hp300hpux host ports,

updated "know" assertions and made them work, much other reorganization, cleanup, and lint.

Ken Raeburn wrote the high level BFD interface code to replace most of the code in format specific

I/O modules.

The original VMS support was contributed by David L. Kashtan. Eric Youngdale has done much work

with it since.

The Intel 80386 machine description was written by Eliot Dresselhaus.

Minh Tran Le at IntelliCorp contributed some AIX 386 support.

The Motorola 88k machine description was contributed by Devon Bowen of Buffalo University and

Torbjorn Granlund of the Swedish Institute of Computer Science.

Keith Knowles at the Open Software Foundation wrote the original MIPS back end (

tc mips.c

,

tc mips.h

), and contributed Rose format support (which hasn't been merged in yet). Ralph Camp 

bell worked with the MIPS code to support a.out format.

Support for the Zilog Z8k and Renesas H8/300 and H8/500 processors (tc z8k, tc h8300, tc h8500),

and IEEE 695 object file format (obj ieee), was written by Steve Chamberlain of Cygnus Support.

Steve also modified the COFF back end to use BFD for some low level operations, for use with the

H8/300 and AMD 29k targets.

John Gilmore built the AMD 29000 support, added

.include

support, and simplified the config 

uration of which versions accept which directives. He updated the 68k machine description so that

Motorola's opcodes always produced fixed size instructions (e.g.,

jsr

), while synthetic instructions

remained shrinkable (

jbsr

). John fixed many bugs, including true tested cross compilation support,

and one bug in relaxation that took a week and required the proverbial one bit fix.

Ian Lance Taylor of Cygnus Support merged the Motorola and MIT syntax for the 68k, completed

support for some COFF targets (68k, i386 SVR3, and SCO Unix), added support for MIPS ECOFF

and ELF targets, wrote the initial RS/6000 and PowerPC assembler, and made a few other minor

patches.

Steve Chamberlain made

as

able to generate listings.

Hewlett Packard contributed support for the HP9000/300.

1. Any more details?