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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 cca833a215
commit 1da8cbc9ea
1 changed files with 6 additions and 1 deletions
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7
configs/README.txt
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@ -628,7 +628,7 @@ defconfig -- This is a configuration file similar to the Linux
function by Daniel Vik. See licensing information in the top-level
COPYING file. Default: n
And if CONFIG_MEMCPY_VIK, the following tuning options are available:
And if CONFIG_MEMCPY_VIK is selected, the following tuning options are available:
CONFIG_MEMCPY_PRE_INC_PTRS - Use pre-increment of pointers. Default is
post increment of pointers.
@ -644,6 +644,11 @@ defconfig -- This is a configuration file similar to the Linux
CONFIG_MEMSET_OPTSPEED - Select this option to use a version of memcpy()
optimized for speed. Default: memcpy() is optimized for size.
And if CONFIG_MEMSET_OPTSPEED is selected, the following tuning option is
available:
CONFIG_MEMSET_64BIT - Compiles memset() for 64 bit architectures
The architecture may provide custom versions of certain standard header
files: