1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<!-- This file documents the GNU Assembler "as". 4 5Copyright (C) 1991-2021 Free Software Foundation, Inc. 6 7Permission is granted to copy, distribute and/or modify this document 8under the terms of the GNU Free Documentation License, Version 1.3 9or any later version published by the Free Software Foundation; 10with no Invariant Sections, with no Front-Cover Texts, and with no 11Back-Cover Texts. A copy of the license is included in the 12section entitled "GNU Free Documentation License". 13 --> 14<!-- Created by GNU Texinfo 5.1, http://www.gnu.org/software/texinfo/ --> 15<head> 16<title>Using as: Acknowledgements</title> 17 18<meta name="description" content="Using as: Acknowledgements"> 19<meta name="keywords" content="Using as: Acknowledgements"> 20<meta name="resource-type" content="document"> 21<meta name="distribution" content="global"> 22<meta name="Generator" content="makeinfo"> 23<meta http-equiv="Content-Type" content="text/html; charset=utf-8"> 24<link href="index.html#Top" rel="start" title="Top"> 25<link href="AS-Index.html#AS-Index" rel="index" title="AS Index"> 26<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents"> 27<link href="index.html#Top" rel="up" title="Top"> 28<link href="GNU-Free-Documentation-License.html#GNU-Free-Documentation-License" rel="next" title="GNU Free Documentation License"> 29<link href="Bug-Reporting.html#Bug-Reporting" rel="previous" title="Bug Reporting"> 30<style type="text/css"> 31<!-- 32a.summary-letter {text-decoration: none} 33blockquote.smallquotation {font-size: smaller} 34div.display {margin-left: 3.2em} 35div.example {margin-left: 3.2em} 36div.indentedblock {margin-left: 3.2em} 37div.lisp {margin-left: 3.2em} 38div.smalldisplay {margin-left: 3.2em} 39div.smallexample {margin-left: 3.2em} 40div.smallindentedblock {margin-left: 3.2em; font-size: smaller} 41div.smalllisp {margin-left: 3.2em} 42kbd {font-style:oblique} 43pre.display {font-family: inherit} 44pre.format {font-family: inherit} 45pre.menu-comment {font-family: serif} 46pre.menu-preformatted {font-family: serif} 47pre.smalldisplay {font-family: inherit; font-size: smaller} 48pre.smallexample {font-size: smaller} 49pre.smallformat {font-family: inherit; font-size: smaller} 50pre.smalllisp {font-size: smaller} 51span.nocodebreak {white-space:nowrap} 52span.nolinebreak {white-space:nowrap} 53span.roman {font-family:serif; font-weight:normal} 54span.sansserif {font-family:sans-serif; font-weight:normal} 55ul.no-bullet {list-style: none} 56--> 57</style> 58 59 60</head> 61 62<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000"> 63<a name="Acknowledgements"></a> 64<div class="header"> 65<p> 66Next: <a href="GNU-Free-Documentation-License.html#GNU-Free-Documentation-License" accesskey="n" rel="next">GNU Free Documentation License</a>, Previous: <a href="Reporting-Bugs.html#Reporting-Bugs" accesskey="p" rel="previous">Reporting Bugs</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p> 67</div> 68<hr> 69<a name="Acknowledgements-1"></a> 70<h2 class="chapter">11 Acknowledgements</h2> 71 72<p>If you have contributed to GAS and your name isn’t listed here, 73it is not meant as a slight. We just don’t know about it. Send mail to the 74maintainer, and we’ll correct the situation. Currently 75the maintainer is Nick Clifton (email address <code>nickc@redhat.com</code>). 76</p> 77<p>Dean Elsner wrote the original <small>GNU</small> assembler for the VAX.<a name="DOCF4" href="#FOOT4"><sup>4</sup></a> 78</p> 79<p>Jay Fenlason maintained GAS for a while, adding support for GDB-specific debug 80information and the 68k series machines, most of the preprocessing pass, and 81extensive changes in <samp>messages.c</samp>, <samp>input-file.c</samp>, <samp>write.c</samp>. 82</p> 83<p>K. Richard Pixley maintained GAS for a while, adding various enhancements and 84many bug fixes, including merging support for several processors, breaking GAS 85up to handle multiple object file format back ends (including heavy rewrite, 86testing, an integration of the coff and b.out back ends), adding configuration 87including heavy testing and verification of cross assemblers and file splits 88and renaming, converted GAS to strictly ANSI C including full prototypes, added 89support for m680[34]0 and cpu32, did considerable work on i960 including a COFF 90port (including considerable amounts of reverse engineering), a SPARC opcode 91file rewrite, DECstation, rs6000, and hp300hpux host ports, updated “know” 92assertions and made them work, much other reorganization, cleanup, and lint. 93</p> 94<p>Ken Raeburn wrote the high-level BFD interface code to replace most of the code 95in format-specific I/O modules. 96</p> 97<p>The original VMS support was contributed by David L. Kashtan. Eric Youngdale 98has done much work with it since. 99</p> 100<p>The Intel 80386 machine description was written by Eliot Dresselhaus. 101</p> 102<p>Minh Tran-Le at IntelliCorp contributed some AIX 386 support. 103</p> 104<p>The Motorola 88k machine description was contributed by Devon Bowen of Buffalo 105University and Torbjorn Granlund of the Swedish Institute of Computer Science. 106</p> 107<p>Keith Knowles at the Open Software Foundation wrote the original MIPS back end 108(<samp>tc-mips.c</samp>, <samp>tc-mips.h</samp>), and contributed Rose format support 109(which hasn’t been merged in yet). Ralph Campbell worked with the MIPS code to 110support a.out format. 111</p> 112<p>Support for the Zilog Z8k and Renesas H8/300 processors (tc-z8k, 113tc-h8300), and IEEE 695 object file format (obj-ieee), was written by 114Steve Chamberlain of Cygnus Support. Steve also modified the COFF back end to 115use BFD for some low-level operations, for use with the H8/300 and AMD 29k 116targets. 117</p> 118<p>John Gilmore built the AMD 29000 support, added <code>.include</code> support, and 119simplified the configuration of which versions accept which directives. He 120updated the 68k machine description so that Motorola’s opcodes always produced 121fixed-size instructions (e.g., <code>jsr</code>), while synthetic instructions 122remained shrinkable (<code>jbsr</code>). John fixed many bugs, including true tested 123cross-compilation support, and one bug in relaxation that took a week and 124required the proverbial one-bit fix. 125</p> 126<p>Ian Lance Taylor of Cygnus Support merged the Motorola and MIT syntax for the 12768k, completed support for some COFF targets (68k, i386 SVR3, and SCO Unix), 128added support for MIPS ECOFF and ELF targets, wrote the initial RS/6000 and 129PowerPC assembler, and made a few other minor patches. 130</p> 131<p>Steve Chamberlain made GAS able to generate listings. 132</p> 133<p>Hewlett-Packard contributed support for the HP9000/300. 134</p> 135<p>Jeff Law wrote GAS and BFD support for the native HPPA object format (SOM) 136along with a fairly extensive HPPA testsuite (for both SOM and ELF object 137formats). This work was supported by both the Center for Software Science at 138the University of Utah and Cygnus Support. 139</p> 140<p>Support for ELF format files has been worked on by Mark Eichin of Cygnus 141Support (original, incomplete implementation for SPARC), Pete Hoogenboom and 142Jeff Law at the University of Utah (HPPA mainly), Michael Meissner of the Open 143Software Foundation (i386 mainly), and Ken Raeburn of Cygnus Support (sparc, 144and some initial 64-bit support). 145</p> 146<p>Linas Vepstas added GAS support for the ESA/390 “IBM 370” architecture. 147</p> 148<p>Richard Henderson rewrote the Alpha assembler. Klaus Kaempf wrote GAS and BFD 149support for openVMS/Alpha. 150</p> 151<p>Timothy Wall, Michael Hayes, and Greg Smart contributed to the various tic* 152flavors. 153</p> 154<p>David Heine, Sterling Augustine, Bob Wilson and John Ruttenberg from Tensilica, 155Inc. added support for Xtensa processors. 156</p> 157<p>Several engineers at Cygnus Support have also provided many small bug fixes and 158configuration enhancements. 159</p> 160<p>Jon Beniston added support for the Lattice Mico32 architecture. 161</p> 162<p>Many others have contributed large or small bugfixes and enhancements. If 163you have contributed significant work and are not mentioned on this list, and 164want to be, let us know. Some of the history has been lost; we are not 165intentionally leaving anyone out. 166</p> 167<div class="footnote"> 168<hr> 169<h4 class="footnotes-heading">Footnotes</h4> 170 171<h3><a name="FOOT4" href="#DOCF4">(4)</a></h3> 172<p>Any 173more details?</p> 174</div> 175<hr> 176<div class="header"> 177<p> 178Next: <a href="GNU-Free-Documentation-License.html#GNU-Free-Documentation-License" accesskey="n" rel="next">GNU Free Documentation License</a>, Previous: <a href="Reporting-Bugs.html#Reporting-Bugs" accesskey="p" rel="previous">Reporting Bugs</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="AS-Index.html#AS-Index" title="Index" rel="index">Index</a>]</p> 179</div> 180 181 182 183</body> 184</html> 185