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OvmfPkg/XenBusDxe: Add TestAndClearBit.

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This atomically test's and clear's a bit.

Change in V3:
- adding IA32 support. (not yet reviewed)
  both XenBusDxe/Ia32/TestAndClearBit.{S,asm} are new

Change in V2:
- Adding .asm version
- Comment the function

Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Reviewed-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>

git-svn-id: https://svn.code.sf.net/p/edk2/code/trunk/edk2@16266 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
Anthony PERARD
2014-10-29 06:50:35 +00:00
committed by jljusten
parent f1259bba36
commit 6342f1fea8
6 changed files with 81 additions and 0 deletions
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4
OvmfPkg/XenBusDxe/XenBusDxe.inf
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@@ -48,12 +48,16 @@
Ia32/hypercall.asm
Ia32/InterlockedCompareExchange16.S
Ia32/InterlockedCompareExchange16.asm
Ia32/TestAndClearBit.S
Ia32/TestAndClearBit.asm
[Sources.X64]
X64/hypercall.S
X64/hypercall.asm
X64/InterlockedCompareExchange16.S
X64/InterlockedCompareExchange16.asm
X64/TestAndClearBit.S
X64/TestAndClearBit.asm
[LibraryClasses]
UefiDriverEntryPoint