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https://github.com/acidanthera/OpenCorePkg.git
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103 lines
2.9 KiB
C
103 lines
2.9 KiB
C
/** @file
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Check memory routine compatibility.
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Copyright (c) 2018, vit9696. All rights reserved.<BR>
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This program and the accompanying materials
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are licensed and made available under the terms and conditions of the BSD License
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which accompanies this distribution. The full text of the license may be found at
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http://opensource.org/licenses/bsd-license.php
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THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
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WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
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**/
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#include <Uefi.h>
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#include <Library/BaseMemoryLib.h>
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#include <Library/BaseLib.h>
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#include <Library/DebugLib.h>
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#include <Library/OcMiscLib.h>
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#include <Library/UefiLib.h>
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#include <Library/UefiBootServicesTableLib.h>
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STATIC UINT8 mSource[64];
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STATIC UINT8 mDestination[64];
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EFI_STATUS
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EFIAPI
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UefiMain (
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IN EFI_HANDLE ImageHandle,
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IN EFI_SYSTEM_TABLE *SystemTable
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)
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{
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UINT8 *Src;
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UINT8 *Dst;
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UINT32 Size;
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IA32_CR0 Cr0;
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IA32_CR4 Cr4;
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IA32_EFLAGS32 Flags;
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Src = ALIGN_POINTER (mSource, 16);
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Dst = ALIGN_POINTER (mDestination, 16);
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Size = 32;
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gST->ConOut->OutputString (gST->ConOut, L"VerifyMemOpt\r\n");
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gBS->Stall (SECONDS_TO_MICROSECONDS (1));
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Cr0.UintN = AsmReadCr0 ();
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Cr4.UintN = AsmReadCr4 ();
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Flags.UintN = AsmReadEflags ();
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//
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// CR0.MP bit (BIT1) must be set.
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// CR0.EM bit (BIT2) must be cleared.
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// CR4.OSFXSR bit (BIT9) must be set.
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// CR4.OSXMMEXCPT bit (BIT10) must be set.
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//
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DEBUG ((DEBUG_WARN, "VMOPT: CR0 %08X CR4 %08X EFLAGS %08X\n", Cr0, Cr4, Flags));
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if (Cr0.Bits.MP == 0) {
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DEBUG ((DEBUG_WARN, "VMOPT: WARN CR0 MP is NOT set\n"));
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}
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if (Cr0.Bits.EM != 0) {
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DEBUG ((DEBUG_WARN, "VMOPT: WARN CR0 EM is set\n"));
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}
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if (Cr4.Bits.OSFXSR == 0) {
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DEBUG ((DEBUG_WARN, "VMOPT: WARN CR4 OSFXSR is NOT set\n"));
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}
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if (Cr4.Bits.OSXMMEXCPT == 0) {
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DEBUG ((DEBUG_WARN, "VMOPT: WARN CR4 OSXMMEXCPT is NOT set\n"));
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}
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if (Flags.Bits.DF != 0) {
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DEBUG ((DEBUG_WARN, "VMOPT: WARN EFLAGS DF is set\n"));
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}
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DEBUG ((DEBUG_WARN, "VMOPT: CopyMem aligned src %p/aligned dst %p/size %u\n", Src, Dst, Size));
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gBS->Stall (SECONDS_TO_MICROSECONDS (1));
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CopyMem (Dst, Src, Size);
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Src += 6;
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DEBUG ((DEBUG_WARN, "VMOPT: CopyMem unaligned src %p/aligned dst %p/size %u\n", Src, Dst, Size));
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gBS->Stall (SECONDS_TO_MICROSECONDS (1));
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CopyMem (Dst, Src, Size);
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Size -= 12;
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DEBUG ((DEBUG_WARN, "VMOPT: CopyMem unaligned src %p/aligned dst %p/size %u\n", Src, Dst, Size));
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gBS->Stall (SECONDS_TO_MICROSECONDS (1));
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CopyMem (Dst, Src, Size);
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Dst += 6;
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DEBUG ((DEBUG_WARN, "VMOPT: CopyMem unaligned src %p/unaligned dst %p/size %u\n", Src, Dst, Size));
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gBS->Stall (SECONDS_TO_MICROSECONDS (1));
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CopyMem (Dst, Src, Size);
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DEBUG ((DEBUG_WARN, "VMOPT: Done testing\n"));
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gBS->Stall (SECONDS_TO_MICROSECONDS (1));
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return EFI_SUCCESS;
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}
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