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Optimized memset() can be configured to do 64-bit stores

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5243 42af7a65-404d-4744-a932-0658087f49c3
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patacongo 2012-10-21 01:31:56 +00:00
parent 8595dd344a
commit 10ff47a699
1 changed files with 10 additions and 2 deletions
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12
Documentation/NuttxPortingGuide.html
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@ -4457,7 +4457,7 @@ build
</li></ul> </li></ul>
<p> <p>
And if <code>CONFIG_MEMCPY_VIK</code>, the following tuning options are available: And if <code>CONFIG_MEMCPY_VIK</code> is selected, the following tuning options are available:
</p> </p>
<ul><li> <ul><li>
<code>CONFIG_MEMCPY_PRE_INC_PTRS</code>: <code>CONFIG_MEMCPY_PRE_INC_PTRS</code>:
@ -4471,7 +4471,7 @@ build
</li> </li>
<li> <li>
<code>CONFIG_MEMCPY_64BIT</code>: <code>CONFIG_MEMCPY_64BIT</code>:
Compiles memcpy for 64 bit architectures Compiles <code>memcpy()</code> for 64 bit architectures
</li></ul> </li></ul>
<p><li> <p><li>
@ -4483,6 +4483,14 @@ build
Default: <code>memset()</code> is optimized for size. Default: <code>memset()</code> is optimized for size.
</li></ul> </li></ul>
<p>
And if <code>CONFIG_MEMSET_OPTSPEED</code> is selected, the following tuning option is available:
</p>
<ul><li>
<code>CONFIG_MEMSET_64BIT</code>:
Compiles <code>memset()</code> for 64 bit architectures
</li></ul>
<li> <li>
<p> <p>
The architecture may provide custom versions of certain standard header files: The architecture may provide custom versions of certain standard header files: