native_client_sdk/doc_generated/reference/sandbox_internals/index.html - Issue 2875303003: Add migration to WebAssembly information to PNaCl / NaCl docs.

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Issue 2875303003: Add migration to WebAssembly information to PNaCl / NaCl docs. (Closed)

Patch Set: fix Created 3 years, 6 months ago

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2	2

3 <section id="sandbox-internals">	3 <b><font color="#cc0000">

4 <span id="sandbox-internals-index"></span><h1 id="sandbox-internals"><span id="s andbox-internals-index"></span>Sandbox Internals</h1>	4 NOTE:

	5 Deprecation of the technologies described here has been announced

	6 for platforms other than ChromeOS.<br/>

	7 Please visit our

	8 <a href="/native-client/migration">migration guide</a>

	9 for details.

	10 </font></b>

	11 <hr/><section id="sandbox-internals">

	12 <h1 id="sandbox-internals">Sandbox Internals</h1>

5 <p>The sandbox internals documentation describes implementation details for	13 <p>The sandbox internals documentation describes implementation details for

6 Native Client sandboxing, which is also used by Portable Native	14 Native Client sandboxing, which is also used by Portable Native

7 Client. These details can be useful to reimplement a sandbox, or to	15 Client. These details can be useful to reimplement a sandbox, or to

8 write assembly code that follows sandboxing rules for Native Client	16 write assembly code that follows sandboxing rules for Native Client

9 (Portable Native Client does not allow platform-specific assembly code).</p>	17 (Portable Native Client does not allow platform-specific assembly code).</p>

10 <p>As an implementation detail, the Native Client sandboxes described here	18 <p>As an implementation detail, the Native Client sandboxes described here

11 are currently used by Portable Native Client to execute code on the	19 are currently used by Portable Native Client to execute code on the

12 corresponding machines in a safe manner. The portable bitcode contained	20 corresponding machines in a safe manner. The portable bitcode contained

13 in a <strong>pexe</strong> is translated to a machine-specific <strong>nexe</str ong> before	21 in a <strong>pexe</strong> is translated to a machine-specific <strong>nexe</str ong> before

14 execution. This may change at a point in time: Portable Native Client	22 execution. This may change at a point in time: Portable Native Client

15 doesn’t necessarily need these sandboxes to execute code on these	23 doesn’t necessarily need these sandboxes to execute code on these

16 machines. Note that the Portable Native Client compiler itself is also	24 machines. Note that the Portable Native Client compiler itself is also

17 untrusted: it too runs in a Native Client sandbox described below.</p>	25 untrusted: it too runs in a Native Client sandbox described below.</p>

18 <p>Native Client has sandboxes for:</p>	26 <p>Native Client has sandboxes for:</p>

19 <ul class="small-gap">	27 <ul class="small-gap">

20 <li><a class="reference internal" href="/native-client/reference/sandbox_interna ls/arm-32-bit-sandbox.html#arm-32-bit-sandbox"><em>ARM 32-bit</em></a>.</li>	28 <li><a class="reference internal" href="/native-client/reference/sandbox_interna ls/arm-32-bit-sandbox.html#arm-32-bit-sandbox"><em>ARM 32-bit</em></a>.</li>

21 <li>x86-32: the original design is described in <a class="reference external" hr ef="http://research.google.com/pubs/archive/34913.pdf">Native Client: A Sandbox	29 <li>x86-32: the original design is described in <a class="reference external" hr ef="http://research.google.com/pubs/archive/34913.pdf">Native Client: A Sandbox

22 for Portable, Untrusted x86 Native Code</a>, the current	30 for Portable, Untrusted x86 Native Code</a>, the current

23 design has changed slightly since then.</li>	31 design has changed slightly since then.</li>

24 <li><a class="reference internal" href="/native-client/reference/sandbox_interna ls/x86-64-sandbox.html#x86-64-sandbox"><em>x86-64</em></a>.</li>	32 <li><a class="reference internal" href="/native-client/reference/sandbox_interna ls/x86-64-sandbox.html#x86-64-sandbox"><em>x86-64</em></a>.</li>

25 <li>MIPS32, described in the <a class="reference external" href="https://code.go ogle.com/p/nativeclient/issues/attachmentText?id=2275&aid=22750018000&na me=native-client-mips-0.4.txt">overview of Native Client for MIPS</a>,	33 <li>MIPS32, described in the <a class="reference external" href="https://code.go ogle.com/p/nativeclient/issues/attachmentText?id=2275&aid=22750018000&na me=native-client-mips-0.4.txt">overview of Native Client for MIPS</a>,

26 and <a class="reference external" href="https://code.google.com/p/nativeclient/i ssues/detail?id=2275">bug 2275</a>.</li>	34 and <a class="reference external" href="https://code.google.com/p/nativeclient/i ssues/detail?id=2275">bug 2275</a>.</li>

27 </ul>	35 </ul>

28 </section>	36 </section>

29	37

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