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151 lines
6.1 KiB
HTML
151 lines
6.1 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2019 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Free Software" and "Free Software Needs
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Free Documentation", with the Front-Cover Texts being "A GNU Manual,"
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and with the Back-Cover Texts as in (a) below.
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(a) The FSF's Back-Cover Text is: "You are free to copy and modify
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this GNU Manual. Buying copies from GNU Press supports the FSF in
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developing GNU and promoting software freedom." -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>SPU (Debugging with GDB)</title>
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<meta name="description" content="SPU (Debugging with GDB)">
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<meta name="keywords" content="SPU (Debugging with GDB)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Concept-Index.html#Concept-Index" rel="index" title="Concept Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Architectures.html#Architectures" rel="up" title="Architectures">
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<link href="PowerPC.html#PowerPC" rel="next" title="PowerPC">
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<link href="HPPA.html#HPPA" rel="prev" title="HPPA">
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<style type="text/css">
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-->
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</style>
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</head>
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<body lang="en">
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<a name="SPU"></a>
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<div class="header">
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<p>
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Next: <a href="PowerPC.html#PowerPC" accesskey="n" rel="next">PowerPC</a>, Previous: <a href="HPPA.html#HPPA" accesskey="p" rel="prev">HPPA</a>, Up: <a href="Architectures.html#Architectures" accesskey="u" rel="up">Architectures</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Cell-Broadband-Engine-SPU-architecture"></a>
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<h4 class="subsection">21.4.6 Cell Broadband Engine SPU architecture</h4>
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<a name="index-Cell-Broadband-Engine"></a>
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<a name="index-SPU"></a>
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<p>When <small>GDB</small> is debugging the Cell Broadband Engine SPU architecture,
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it provides the following special commands:
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</p>
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<dl compact="compact">
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<dt><code>info spu event</code></dt>
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<dd><a name="index-info-spu"></a>
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<p>Display SPU event facility status. Shows current event mask
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and pending event status.
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</p>
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</dd>
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<dt><code>info spu signal</code></dt>
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<dd><p>Display SPU signal notification facility status. Shows pending
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signal-control word and signal notification mode of both signal
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notification channels.
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</p>
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</dd>
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<dt><code>info spu mailbox</code></dt>
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<dd><p>Display SPU mailbox facility status. Shows all pending entries,
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in order of processing, in each of the SPU Write Outbound,
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SPU Write Outbound Interrupt, and SPU Read Inbound mailboxes.
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</p>
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</dd>
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<dt><code>info spu dma</code></dt>
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<dd><p>Display MFC DMA status. Shows all pending commands in the MFC
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DMA queue. For each entry, opcode, tag, class IDs, effective
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and local store addresses and transfer size are shown.
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</p>
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</dd>
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<dt><code>info spu proxydma</code></dt>
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<dd><p>Display MFC Proxy-DMA status. Shows all pending commands in the MFC
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Proxy-DMA queue. For each entry, opcode, tag, class IDs, effective
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and local store addresses and transfer size are shown.
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</p>
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</dd>
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</dl>
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<p>When <small>GDB</small> is debugging a combined PowerPC/SPU application
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on the Cell Broadband Engine, it provides in addition the following
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special commands:
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</p>
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<dl compact="compact">
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<dt><code>set spu stop-on-load <var>arg</var></code></dt>
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<dd><a name="index-set-spu"></a>
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<p>Set whether to stop for new SPE threads. When set to <code>on</code>, <small>GDB</small>
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will give control to the user when a new SPE thread enters its <code>main</code>
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function. The default is <code>off</code>.
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</p>
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</dd>
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<dt><code>show spu stop-on-load</code></dt>
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<dd><a name="index-show-spu"></a>
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<p>Show whether to stop for new SPE threads.
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</p>
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</dd>
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<dt><code>set spu auto-flush-cache <var>arg</var></code></dt>
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<dd><p>Set whether to automatically flush the software-managed cache. When set to
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<code>on</code>, <small>GDB</small> will automatically cause the SPE software-managed
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cache to be flushed whenever SPE execution stops. This provides a consistent
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view of PowerPC memory that is accessed via the cache. If an application
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does not use the software-managed cache, this option has no effect.
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</p>
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</dd>
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<dt><code>show spu auto-flush-cache</code></dt>
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<dd><p>Show whether to automatically flush the software-managed cache.
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</p>
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</dd>
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</dl>
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<hr>
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<div class="header">
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<p>
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Next: <a href="PowerPC.html#PowerPC" accesskey="n" rel="next">PowerPC</a>, Previous: <a href="HPPA.html#HPPA" accesskey="p" rel="prev">HPPA</a>, Up: <a href="Architectures.html#Architectures" accesskey="u" rel="up">Architectures</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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</body>
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</html>
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