diff options
Diffstat (limited to 'MdePkg/Library/BaseLib/x86LowLevel.c')
| -rw-r--r-- | MdePkg/Library/BaseLib/x86LowLevel.c | 32 |
1 files changed, 22 insertions, 10 deletions
diff --git a/MdePkg/Library/BaseLib/x86LowLevel.c b/MdePkg/Library/BaseLib/x86LowLevel.c index c222c6ccb6..391fbbf93f 100644 --- a/MdePkg/Library/BaseLib/x86LowLevel.c +++ b/MdePkg/Library/BaseLib/x86LowLevel.c @@ -122,7 +122,7 @@ AsmMsrAndThenOr32 ( If StartBit is greater than 31, then ASSERT().
If EndBit is greater than 31, then ASSERT().
- If EndBit is less than or equal to StartBit, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
@param Index The 32-bit MSR index to read.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -157,7 +157,7 @@ AsmMsrBitFieldRead32 ( If StartBit is greater than 31, then ASSERT().
If EndBit is greater than 31, then ASSERT().
- If EndBit is less than or equal to StartBit, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -197,7 +197,7 @@ AsmMsrBitFieldWrite32 ( If StartBit is greater than 31, then ASSERT().
If EndBit is greater than 31, then ASSERT().
- If EndBit is less than or equal to StartBit, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -237,7 +237,7 @@ AsmMsrBitFieldOr32 ( If StartBit is greater than 31, then ASSERT().
If EndBit is greater than 31, then ASSERT().
- If EndBit is less than or equal to StartBit, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -279,7 +279,7 @@ AsmMsrBitFieldAnd32 ( If StartBit is greater than 31, then ASSERT().
If EndBit is greater than 31, then ASSERT().
- If EndBit is less than or equal to StartBit, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -412,7 +412,7 @@ AsmMsrAndThenOr64 ( If StartBit is greater than 63, then ASSERT().
If EndBit is greater than 63, then ASSERT().
- If EndBit is less than or equal to StartBit, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
@param Index The 32-bit MSR index to read.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -446,7 +446,7 @@ AsmMsrBitFieldRead64 ( If StartBit is greater than 63, then ASSERT().
If EndBit is greater than 63, then ASSERT().
- If EndBit is less than or equal to StartBit, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -487,7 +487,7 @@ AsmMsrBitFieldWrite64 ( If StartBit is greater than 63, then ASSERT().
If EndBit is greater than 63, then ASSERT().
- If EndBit is less than or equal to StartBit, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -528,7 +528,7 @@ AsmMsrBitFieldOr64 ( If StartBit is greater than 63, then ASSERT().
If EndBit is greater than 63, then ASSERT().
- If EndBit is less than or equal to StartBit, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -570,7 +570,7 @@ AsmMsrBitFieldAnd64 ( If StartBit is greater than 63, then ASSERT().
If EndBit is greater than 63, then ASSERT().
- If EndBit is less than or equal to StartBit, then ASSERT().
+ If EndBit is less than StartBit, then ASSERT().
@param Index The 32-bit MSR index to write.
@param StartBit The ordinal of the least significant bit in the bit field.
@@ -740,7 +740,13 @@ AsmFxSave ( {
ASSERT (Buffer != NULL);
ASSERT (((UINTN)Buffer & 0xf) == 0);
+
InternalX86FxSave (Buffer);
+
+ //
+ // Mark one flag at end of Buffer, it will be check by AsmFxRestor()
+ //
+ *(UINT32 *) (&Buffer[sizeof (IA32_FX_BUFFER) - 4]) = 0xAA5555AA;
}
/**
@@ -765,6 +771,12 @@ AsmFxRestore ( {
ASSERT (Buffer != NULL);
ASSERT (((UINTN)Buffer & 0xf) == 0);
+
+ //
+ // Check the flag recorded by AsmFxSave()
+ //
+ ASSERT (*(UINT32 *) (&Buffer[sizeof (IA32_FX_BUFFER) - 4]) == 0xAA5555AA);
+
InternalX86FxRestore (Buffer);
}
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