Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 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"> |
Elliott Hughes | ed39800 | 2017-06-21 14:41:24 -0700 | [diff] [blame] | 6 | <meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> |
Elliott Hughes | a0664b9 | 2017-04-18 17:46:52 -0700 | [diff] [blame] | 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> |
| 25 | Requirements<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> |
| 33 | Limitations<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> |
| 53 | Hardware facilities<br> |
| 54 | -------------------<br> |
| 55 | Valgrind does not require that the host machine has the same hardware<br> |
| 56 | facilities as the machine for which the client program was compiled.<br> |
| 57 | This is convenient. If possible, the JIT compiler will translate the<br> |
| 58 | client instructions according to the facilities available on the host.<br> |
| 59 | This means, though, that probing for hardware facilities by issuing<br> |
| 60 | instructions from that facility and observing whether SIGILL is thrown<br> |
| 61 | may not work. As a consequence, programs that attempt to do so may<br> |
| 62 | behave differently. It is believed that this is a rare use case.<br> |
| 63 | <br> |
| 64 | <br> |
| 65 | Recommendations<br> |
| 66 | ---------------<br> |
| 67 | Applications should be compiled with -fno-builtin to avoid<br> |
| 68 | false positives due to builtin string operations when running memcheck.<br> |
| 69 | <br> |
| 70 | <br> |
| 71 | Reading 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> |