From 46f82fa0cfe716f147b7878b7155983f7f6edb20 Mon Sep 17 00:00:00 2001 From: Gerd Hoffmann Date: Fri, 14 Jun 2024 11:45:53 +0200 Subject: [PATCH] MdePkg/X86UnitTestHost: set rdrand cpuid bit Set the rdrand feature bit when faking cpuid for host test cases. Needed to make the CryptoPkg test cases work. Signed-off-by: Gerd Hoffmann (cherry picked from commit 5e776299a2604b336a947e68593012ab2cc16eb4) --- MdePkg/Library/BaseLib/X86UnitTestHost.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/MdePkg/Library/BaseLib/X86UnitTestHost.c b/MdePkg/Library/BaseLib/X86UnitTestHost.c index 8ba4f54a38..7f7276f7f4 100644 --- a/MdePkg/Library/BaseLib/X86UnitTestHost.c +++ b/MdePkg/Library/BaseLib/X86UnitTestHost.c @@ -66,6 +66,15 @@ UnitTestHostBaseLibAsmCpuid ( OUT UINT32 *Edx OPTIONAL ) { + UINT32 RetEcx; + + RetEcx = 0; + switch (Index) { + case 1: + RetEcx |= BIT30; /* RdRand */ + break; + } + if (Eax != NULL) { *Eax = 0; } @@ -75,7 +84,7 @@ UnitTestHostBaseLibAsmCpuid ( } if (Ecx != NULL) { - *Ecx = 0; + *Ecx = RetEcx; } if (Edx != NULL) {