diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/X86Thunk.c')
| -rw-r--r-- | MdePkg/Library/BaseLib/X86Thunk.c | 51 |
1 files changed, 26 insertions, 25 deletions
diff --git a/MdePkg/Library/BaseLib/X86Thunk.c b/MdePkg/Library/BaseLib/X86Thunk.c index 5c8a039899..9940dca859 100644 --- a/MdePkg/Library/BaseLib/X86Thunk.c +++ b/MdePkg/Library/BaseLib/X86Thunk.c @@ -6,15 +6,14 @@ **/
-
#include "BaseLibInternals.h"
-extern CONST UINT8 m16Start;
-extern CONST UINT16 m16Size;
-extern CONST UINT16 mThunk16Attr;
-extern CONST UINT16 m16Gdt;
-extern CONST UINT16 m16GdtrBase;
-extern CONST UINT16 mTransition;
+extern CONST UINT8 m16Start;
+extern CONST UINT16 m16Size;
+extern CONST UINT16 mThunk16Attr;
+extern CONST UINT16 m16Gdt;
+extern CONST UINT16 m16GdtrBase;
+extern CONST UINT16 mTransition;
/**
Invokes 16-bit code in big real mode and returns the updated register set.
@@ -33,8 +32,8 @@ extern CONST UINT16 mTransition; IA32_REGISTER_SET *
EFIAPI
InternalAsmThunk16 (
- IN IA32_REGISTER_SET *RegisterSet,
- IN OUT VOID *Transition
+ IN IA32_REGISTER_SET *RegisterSet,
+ IN OUT VOID *Transition
);
/**
@@ -61,8 +60,8 @@ InternalAsmThunk16 ( VOID
EFIAPI
AsmGetThunk16Properties (
- OUT UINT32 *RealModeBufferSize,
- OUT UINT32 *ExtraStackSize
+ OUT UINT32 *RealModeBufferSize,
+ OUT UINT32 *ExtraStackSize
)
{
ASSERT (RealModeBufferSize != NULL);
@@ -93,10 +92,10 @@ AsmGetThunk16Properties ( VOID
EFIAPI
AsmPrepareThunk16 (
- IN OUT THUNK_CONTEXT *ThunkContext
+ IN OUT THUNK_CONTEXT *ThunkContext
)
{
- IA32_SEGMENT_DESCRIPTOR *RealModeGdt;
+ IA32_SEGMENT_DESCRIPTOR *RealModeGdt;
ASSERT (ThunkContext != NULL);
ASSERT ((UINTN)ThunkContext->RealModeBuffer < 0x100000);
@@ -113,8 +112,8 @@ AsmPrepareThunk16 ( // RealModeGdt[2]: Data Segment
// RealModeGdt[3]: Call Gate
//
- RealModeGdt = (IA32_SEGMENT_DESCRIPTOR*)(
- (UINTN)ThunkContext->RealModeBuffer + m16Gdt);
+ RealModeGdt = (IA32_SEGMENT_DESCRIPTOR *)(
+ (UINTN)ThunkContext->RealModeBuffer + m16Gdt);
//
// Update Code & Data Segment Descriptor
@@ -127,7 +126,7 @@ AsmPrepareThunk16 ( //
// Update transition code entry point offset
//
- *(UINT32*)((UINTN)ThunkContext->RealModeBuffer + mTransition) +=
+ *(UINT32 *)((UINTN)ThunkContext->RealModeBuffer + mTransition) +=
(UINT32)(UINTN)ThunkContext->RealModeBuffer & 0xf;
//
@@ -138,20 +137,20 @@ AsmPrepareThunk16 ( // Set segment limits to 64KB
//
RealModeGdt[1].Bits.LimitHigh = 0;
- RealModeGdt[1].Bits.G = 0;
+ RealModeGdt[1].Bits.G = 0;
RealModeGdt[2].Bits.LimitHigh = 0;
- RealModeGdt[2].Bits.G = 0;
+ RealModeGdt[2].Bits.G = 0;
}
//
// Update GDTBASE for this thunk context
//
- *(VOID**)((UINTN)ThunkContext->RealModeBuffer + m16GdtrBase) = RealModeGdt;
+ *(VOID **)((UINTN)ThunkContext->RealModeBuffer + m16GdtrBase) = RealModeGdt;
//
// Update Thunk Attributes
//
- *(UINT32*)((UINTN)ThunkContext->RealModeBuffer + mThunk16Attr) =
+ *(UINT32 *)((UINTN)ThunkContext->RealModeBuffer + mThunk16Attr) =
ThunkContext->ThunkAttributes;
}
@@ -211,17 +210,19 @@ AsmPrepareThunk16 ( VOID
EFIAPI
AsmThunk16 (
- IN OUT THUNK_CONTEXT *ThunkContext
+ IN OUT THUNK_CONTEXT *ThunkContext
)
{
- IA32_REGISTER_SET *UpdatedRegs;
+ IA32_REGISTER_SET *UpdatedRegs;
ASSERT (ThunkContext != NULL);
ASSERT ((UINTN)ThunkContext->RealModeBuffer < 0x100000);
ASSERT (ThunkContext->RealModeBufferSize >= m16Size);
ASSERT ((UINTN)ThunkContext->RealModeBuffer + m16Size <= 0x100000);
- ASSERT (((ThunkContext->ThunkAttributes & (THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15 | THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL)) != \
- (THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15 | THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL)));
+ ASSERT (
+ ((ThunkContext->ThunkAttributes & (THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15 | THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL)) != \
+ (THUNK_ATTRIBUTE_DISABLE_A20_MASK_INT_15 | THUNK_ATTRIBUTE_DISABLE_A20_MASK_KBD_CTRL))
+ );
UpdatedRegs = InternalAsmThunk16 (
ThunkContext->RealModeState,
@@ -254,7 +255,7 @@ AsmThunk16 ( VOID
EFIAPI
AsmPrepareAndThunk16 (
- IN OUT THUNK_CONTEXT *ThunkContext
+ IN OUT THUNK_CONTEXT *ThunkContext
)
{
AsmPrepareThunk16 (ThunkContext);
|