Blackfin arch: fix some bugs in lib/string.h functions found by our string testing...
commit0931ce8439365358b1cacf888ddc8fb008036125
authorMike Frysinger <michael.frysinger@analog.com>
Wed, 12 Sep 2007 08:30:15 +0000 (12 16:30 +0800)
committerBryan Wu <bryan.wu@analog.com>
Wed, 12 Sep 2007 08:30:15 +0000 (12 16:30 +0800)
treea2bb7a1c7fd882fa3accbe6f636af5f57224c875
parente62687f995fd7ba0b68c3b0a4f4d9fd9d1c54ec2
Blackfin arch: fix some bugs in lib/string.h functions found by our string testing modules

 - use ints for the return value rather than char since we actually return
   an int and we dont want it improperly being sign extended during the reload
   http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3525

 - if src is shorter than the requested number of copy bytes, we need to null
   pad the rest
   http://blackfin.uclinux.org/gf/project/uclinux-dist/tracker/?action=TrackerItemEdit&tracker_item_id=3524

 - mark these as __volatile__ and add memory to the clobber list so gcc does
   not optimize buffers around on us we may be using

 - rewrite asm code to be readable/maintainable

Signed-off-by: Mike Frysinger <michael.frysinger@analog.com>
Signed-off-by: Bryan Wu <bryan.wu@analog.com>
include/asm-blackfin/string.h