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Ring3: Added SysCallCalculateCrc32 wrapper.

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This commit is contained in:
Mikhail Krichanov 2024-03-12 13:25:08 +03:00
parent 7144df121c
commit 6c366a9d5f
3 changed files with 43 additions and 3 deletions
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9
MdeModulePkg/Core/Dxe/DxeRing3/Ring3UefiBootServices.c
View File

@ -697,9 +697,12 @@ Ring3CalculateCrc32 (
OUT UINT32 *Crc32
)
{
DEBUG ((DEBUG_ERROR, "Ring3: CalculateCrc32 is not supported\n"));
return EFI_UNSUPPORTED;
return SysCall (
SysCallCalculateCrc32,
Data,
DataSize,
Crc32
);
}
EFI_STATUS

36
MdeModulePkg/Core/Dxe/SysCall/BootServices.c
View File

@ -650,6 +650,42 @@ CallBootService (
return StatusBS;
case SysCallCalculateCrc32:
//
// Argument 1: VOID *Data
// Argument 2: UINTN DataSize
// Argument 3: UINT32 *Crc32
//
gCpu->GetMemoryAttributes (gCpu, (EFI_PHYSICAL_ADDRESS)CoreRbp->Argument1, &Attributes);
ASSERT ((Attributes & EFI_MEMORY_USER) != 0);
gCpu->GetMemoryAttributes (gCpu, (EFI_PHYSICAL_ADDRESS)(CoreRbp->Argument1 + CoreRbp->Argument2 - 1), &Attributes);
ASSERT ((Attributes & EFI_MEMORY_USER) != 0);
gCpu->GetMemoryAttributes (gCpu, (EFI_PHYSICAL_ADDRESS)CoreRbp->Argument3, &Attributes);
ASSERT ((Attributes & EFI_MEMORY_USER) != 0);
gCpu->GetMemoryAttributes (gCpu, (EFI_PHYSICAL_ADDRESS)(CoreRbp->Argument3 + sizeof (UINT32 *) - 1), &Attributes);
ASSERT ((Attributes & EFI_MEMORY_USER) != 0);
Argument4 = (UINTN)AllocatePool (CoreRbp->Argument2);
if ((VOID *)Argument4 == NULL) {
return EFI_OUT_OF_RESOURCES;
}
DisableSMAP ();
CopyMem ((VOID *)Argument4, (VOID *)CoreRbp->Argument1, CoreRbp->Argument2);
EnableSMAP ();
Status = gBS->CalculateCrc32 (
(VOID *)Argument4,
CoreRbp->Argument2,
(UINT32 *)&Argument5
);
DisableSMAP ();
*(UINT32 *)CoreRbp->Argument3 = (UINT32)Argument5;
EnableSMAP ();
return Status;
case SysCallGetVariable:
//
// Argument 1: CHAR16 *VariableName

1
MdePkg/Include/Uefi/UefiSpec.h
View File

@ -2028,6 +2028,7 @@ typedef enum {
SysCallRaiseTpl,
SysCallRestoreTpl,
SysCallLocateHandleBuffer,
SysCallCalculateCrc32,
//
// RuntimeServices
//