diff options
Diffstat (limited to 'MdePkg/Library/BaseMemoryLibOptDxe/AArch64/CompareGuid.S')
| -rw-r--r-- | MdePkg/Library/BaseMemoryLibOptDxe/AArch64/CompareGuid.S | 40 |
1 files changed, 40 insertions, 0 deletions
diff --git a/MdePkg/Library/BaseMemoryLibOptDxe/AArch64/CompareGuid.S b/MdePkg/Library/BaseMemoryLibOptDxe/AArch64/CompareGuid.S new file mode 100644 index 000000000000..8544c018c4f5 --- /dev/null +++ b/MdePkg/Library/BaseMemoryLibOptDxe/AArch64/CompareGuid.S @@ -0,0 +1,40 @@ +// +// Copyright (c) 2016, Linaro Limited +// All rights reserved. +// +// Redistribution and use in source and binary forms, with or without +// modification, are permitted provided that the following conditions are met: +// * Redistributions of source code must retain the above copyright +// notice, this list of conditions and the following disclaimer. +// * Redistributions in binary form must reproduce the above copyright +// notice, this list of conditions and the following disclaimer in the +// documentation and/or other materials provided with the distribution. +// * Neither the name of the Linaro nor the +// names of its contributors may be used to endorse or promote products +// derived from this software without specific prior written permission. +// +// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +// HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +// + + .text + .align 5 +ASM_GLOBAL ASM_PFX(InternalMemCompareGuid) +ASM_PFX(InternalMemCompareGuid): + mov x2, xzr + ldp x3, x4, [x0] + cbz x1, 0f + ldp x1, x2, [x1] +0: cmp x1, x3 + ccmp x2, x4, #0, eq + cset w0, eq + ret |