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| author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-10-21 01:31:56 +0000 |
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| committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2012-10-21 01:31:56 +0000 |
| commit | d24bf915745de8e2c99e565c94d59a64ba24648c (patch) | |
| tree | 327e896f150fa1860a1646e7f2ce85d29a1fa586 /nuttx/configs/README.txt | |
| parent | f16ae329fdcd533adc29e035e2184918b3862612 (diff) | |
| download | px4-firmware-d24bf915745de8e2c99e565c94d59a64ba24648c.tar.gz px4-firmware-d24bf915745de8e2c99e565c94d59a64ba24648c.tar.bz2 px4-firmware-d24bf915745de8e2c99e565c94d59a64ba24648c.zip | |
Optimized memset() can be configured to do 64-bit stores
git-svn-id: http://svn.code.sf.net/p/nuttx/code/trunk@5243 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/configs/README.txt')
| -rw-r--r-- | nuttx/configs/README.txt | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/nuttx/configs/README.txt b/nuttx/configs/README.txt index 0bb531d67..9714b0228 100644 --- a/nuttx/configs/README.txt +++ b/nuttx/configs/README.txt @@ -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: |