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GetNextMonotonicCount may not be available when GenerateRandomGuid is called. Add a static variable as a seed. 

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@5752 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
qwang12 2008-08-29 01:53:37 +00:00
parent 21a54a4d0b
commit 138f2f82d8
1 changed files with 5 additions and 11 deletions
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14
EdkCompatibilityPkg/Compatibility/FrameworkHiiToUefiHiiThunk/Package.c
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@ -184,19 +184,13 @@ GenerateRandomGuid (
OUT EFI_GUID * Guid
)
{
EFI_STATUS Status;
static EFI_GUID GuidBase = { 0x14f95e01, 0xd562, 0x432e, { 0x84, 0x4a, 0x95, 0xa4, 0x39, 0x5, 0x10, 0x7e }};
UINT64 MonotonicCount;
EFI_GUID GuidBase = { 0x14f95e01, 0xd562, 0x432e, { 0x84, 0x4a, 0x95, 0xa4, 0x39, 0x5, 0x10, 0x7e }};
static UINT64 Count = 0;
CopyGuid (Guid, &GuidBase);
Status = gBS->GetNextMonotonicCount (&MonotonicCount);
ASSERT_EFI_ERROR (Status);
//
// Use Monotonic Count as a psedo random number generator.
//
*((UINT64 *) Guid) = *((UINT64 *) Guid) + MonotonicCount;
Count++;
*((UINT64 *) Guid) = *((UINT64 *) Guid) + Count;
}
EFI_STATUS