1<html> 2<head> 3<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"> 4<title>8.�README.S390</title> 5<link rel="stylesheet" type="text/css" href="vg_basic.css"> 6<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 7<link rel="home" href="index.html" title="Valgrind Documentation"> 8<link rel="up" href="dist.html" title="Valgrind Distribution Documents"> 9<link rel="prev" href="dist.readme-packagers.html" title="7.�README_PACKAGERS"> 10<link rel="next" href="dist.readme-android.html" title="9.�README.android"> 11</head> 12<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 13<div><table class="nav" width="100%" cellspacing="3" cellpadding="3" border="0" summary="Navigation header"><tr> 14<td width="22px" align="center" valign="middle"><a accesskey="p" href="dist.readme-packagers.html"><img src="images/prev.png" width="18" height="21" border="0" alt="Prev"></a></td> 15<td width="25px" align="center" valign="middle"><a accesskey="u" href="dist.html"><img src="images/up.png" width="21" height="18" border="0" alt="Up"></a></td> 16<td width="31px" align="center" valign="middle"><a accesskey="h" href="index.html"><img src="images/home.png" width="27" height="20" border="0" alt="Up"></a></td> 17<th align="center" valign="middle">Valgrind Distribution Documents</th> 18<td width="22px" align="center" valign="middle"><a accesskey="n" href="dist.readme-android.html"><img src="images/next.png" width="18" height="21" border="0" alt="Next"></a></td> 19</tr></table></div> 20<div class="chapter"> 21<div class="titlepage"><div><div><h1 class="title"> 22<a name="dist.readme-s390"></a>8.�README.S390</h1></div></div></div> 23<div class="literallayout"><p><br> 24������<br> 25Requirements<br> 26------------<br> 27-�You�need�GCC�3.4�or�later�to�compile�the�s390�port.<br> 28-�To�run�valgrind�a�z10�machine�or�any�later�model�is�recommended.<br> 29��Older�machine�models�down�to�and�including�z990�may�work�but�have<br> 30��not�been�tested�extensively.<br> 31<br> 32<br> 33Limitations<br> 34-----------<br> 35-�31-bit�client�programs�are�not�supported.<br> 36-�Hexadecimal�floating�point�is�not�supported.<br> 37-�Transactional�memory�is�not�supported.<br> 38-�Instructions�operating�on�vector�registers�are�not�supported.<br> 39-�memcheck,�cachegrind,�drd,�helgrind,�massif,�lackey,�and�none�are<br> 40��supported.�<br> 41-�On�machine�models�predating�z10,�cachegrind�will�assume�a�z10�cache<br> 42��architecture.�Otherwise,�cachegrind�will�query�the�hosts�cache�system<br> 43��and�use�those�parameters.<br> 44-�callgrind�and�all�experimental�tools�are�currently�not�supported.<br> 45-�Some�gcc�versions�use�mvc�to�copy�4/8�byte�values.�This�will�affect<br> 46��certain�debug�messages.�For�example,�memcheck�will�complain�about<br> 47��4�one-byte�reads/writes�instead�of�just�a�single�read/write.<br> 48-�The�transactional-execution�facility�is�not�supported;�it�is�masked<br> 49��off�from�HWCAP.<br> 50-�The�vector�facility�is�not�supported;�it�is�masked�off�from�HWCAP.<br> 51<br> 52<br> 53Hardware�facilities<br> 54-------------------<br> 55Valgrind�does�not�require�that�the�host�machine�has�the�same�hardware<br> 56facilities�as�the�machine�for�which�the�client�program�was�compiled.<br> 57This�is�convenient.�If�possible,�the�JIT�compiler�will�translate�the<br> 58client�instructions�according�to�the�facilities�available�on�the�host.<br> 59This�means,�though,�that�probing�for�hardware�facilities�by�issuing<br> 60instructions�from�that�facility�and�observing�whether�SIGILL�is�thrown<br> 61may�not�work.�As�a�consequence,�programs�that�attempt�to�do�so�may<br> 62behave�differently.�It�is�believed�that�this�is�a�rare�use�case.<br> 63<br> 64<br> 65Recommendations<br> 66---------------<br> 67Applications�should�be�compiled�with�-fno-builtin�to�avoid<br> 68false�positives�due�to�builtin�string�operations�when�running�memcheck.<br> 69<br> 70<br> 71Reading�Material<br> 72----------------<br> 73(1)�Linux�for�zSeries�ELF�ABI�Supplement<br> 74����http://refspecs.linuxfoundation.org/ELF/zSeries/index.html<br> 75(2)�z/Architecture�Principles�of�Operation<br> 76����http://publibfi.boulder.ibm.com/epubs/pdf/dz9zr010.pdf<br> 77(3)�z/Architecture�Reference�Summary<br> 78����http://publibfi.boulder.ibm.com/epubs/pdf/dz9zs008.pdf<br> 79<br> 80����</p></div> 81</div> 82<div> 83<br><table class="nav" width="100%" cellspacing="3" cellpadding="2" border="0" summary="Navigation footer"> 84<tr> 85<td rowspan="2" width="40%" align="left"> 86<a accesskey="p" href="dist.readme-packagers.html"><<�7.�README_PACKAGERS</a>�</td> 87<td width="20%" align="center"><a accesskey="u" href="dist.html">Up</a></td> 88<td rowspan="2" width="40%" align="right">�<a accesskey="n" href="dist.readme-android.html">9.�README.android�>></a> 89</td> 90</tr> 91<tr><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td></tr> 92</table> 93</div> 94</body> 95</html> 96
