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3 Commits

Author SHA1 Message Date
Ard Biesheuvel eab2678815 MdePkg/BaseMemoryLibOptDxe: replace deprecated uses of IT blocks 
The ARM architecture version 8 deprecates all uses of the IT instruction
except cases where it is followed by a single narrow instruction. So
replace any occurrences with equivalent sequences that adhere to the
new rules.

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>
 2016-09-27 09:12:14 -07:00
Ard Biesheuvel 8b4ca351dd MdePkg/BaseMemoryLibOptDxe ARM AARCH64: fix thinko in SetMem## 
The new InternalMemSetMem##() implementations for ARM and AARCH64 in
BaseMemoryLibOptDxe fail to take into account that the 'length' argument
is not in bytes, but in number of items to be copied. So multiply by the
item size before proceeding.

Reported-by: Laszlo Ersek <lersek@redhat.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>
Tested-by: Laszlo Ersek <lersek@redhat.com>
 2016-09-23 11:50:51 +01:00
Ard Biesheuvel a37f660599 MdePkg/BaseMemoryLibOptDxe: add accelerated ARM routines 
This adds ARM support to BaseMemoryLibOptDxe, partially based on the
cortex-strings library (ScanMem) and the existing CopyMem() implementation
from BaseMemoryLibStm in ArmPkg.

All string routines are accelerated except ScanMem16, ScanMem32,
ScanMem64 and IsZeroBuffer, which can wait for another day. (Very few
occurrences exist in the codebase)

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Reviewed-by: Liming Gao <liming.gao@intel.com>
 2016-09-13 16:28:15 +01:00