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1. Added AsmCpuidEx() to BaseLib 

2. Added DecimalToBcd8() and BcdToDecimal8() to String.c

git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@465 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
bxing 2006-06-10 09:37:12 +00:00
parent 4cbd217532
commit dee4740abe
5 changed files with 202 additions and 3 deletions
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82
MdePkg/Include/Library/BaseLib.h
View File

@ -638,6 +638,45 @@ AsciiStrnCat (
IN UINTN Length
);
/**
Converts an 8-bit value to an 8-bit BCD value.
Converts the 8-bit value specified by Value to BCD. The BCD value is
returned.
If Value >= 100, then ASSERT().
@param Value The 8-bit value to convert to BCD. Range 0..99.
@return The BCD value
**/
UINT8
EFIAPI
DecimalToBcd8 (
IN UINT8 Value
);
/**
Converts an 8-bit BCD value to an 8-bit value.
Converts the 8-bit BCD value specified by Value to an 8-bit value. The 8-bit
value is returned.
If Value >= 0xA0, then ASSERT().
If (Value & 0x0F) >= 0x0A, then ASSERT().
@param Value The 8-bit BCD value to convert to an 8-bit value.
@return The 8-bit value is returned.
**/
UINT8
EFIAPI
BcdToDecimal8 (
IN UINT8 Value
);
//
// LIST_ENTRY definition
//
@ -2994,6 +3033,49 @@ AsmCpuid (
OUT UINT32 *Edx OPTIONAL
);
/**
Retrieves CPUID information using an extended leaf identifier.
Executes the CPUID instruction with EAX set to the value specified by Index
and ECX set to the value specified by SubIndex. This function always returns
Index. This function is only available on IA-32 and x64.
If Eax is not NULL, then the value of EAX after CPUID is returned in Eax.
If Ebx is not NULL, then the value of EBX after CPUID is returned in Ebx.
If Ecx is not NULL, then the value of ECX after CPUID is returned in Ecx.
If Edx is not NULL, then the value of EDX after CPUID is returned in Edx.
@param Index The 32-bit value to load into EAX prior to invoking the
CPUID instruction.
@param SubIndex The 32-bit value to load into ECX prior to invoking the
CPUID instruction.
@param Eax Pointer to the 32-bit EAX value returned by the CPUID
instruction. This is an optional parameter that may be
NULL.
@param Ebx Pointer to the 32-bit EBX value returned by the CPUID
instruction. This is an optional parameter that may be
NULL.
@param Ecx Pointer to the 32-bit ECX value returned by the CPUID
instruction. This is an optional parameter that may be
NULL.
@param Edx Pointer to the 32-bit EDX value returned by the CPUID
instruction. This is an optional parameter that may be
NULL.
@return Index
**/
UINT32
EFIAPI
AsmCpuidEx (
IN UINT32 Index,
IN UINT32 SubIndex,
OUT UINT32 *Eax, OPTIONAL
OUT UINT32 *Ebx, OPTIONAL
OUT UINT32 *Ecx, OPTIONAL
OUT UINT32 *Edx OPTIONAL
);
/**
Returns the lower 32-bits of a Machine Specific Register(MSR).

1
MdePkg/Library/BaseLib/BaseLib.msa
View File

@ -94,6 +94,7 @@ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
<Filename>Ia32/SetJump.asm</Filename>
<Filename>Ia32/LongJump.asm</Filename>
<Filename>Ia32/CpuId.asm</Filename>
<Filename>Ia32/CpuIdEx.asm</Filename>
<Filename>Ia32/ReadEflags.asm</Filename>
<Filename>Ia32/ReadMsr64.asm</Filename>
<Filename>Ia32/WriteMsr32.asm</Filename>

68
MdePkg/Library/BaseLib/Ia32/CpuIdEx.asm Normal file
View File

@ -0,0 +1,68 @@
;------------------------------------------------------------------------------
;
; Copyright (c) 2006, Intel Corporation
; All rights reserved. This program and the accompanying materials
; are licensed and made available under the terms and conditions of the BSD License
; which accompanies this distribution. The full text of the license may be found at
; http://opensource.org/licenses/bsd-license.php
;
; THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,
; WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.
;
; Module Name:
;
; CpuIdEx.Asm
;
; Abstract:
;
; AsmCpuidEx function
;
; Notes:
;
;------------------------------------------------------------------------------
.686
.model flat,C
.code
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; AsmCpuidEx (
; IN UINT32 RegisterInEax,
; IN UINT32 RegisterInEcx,
; OUT UINT32 *RegisterOutEax OPTIONAL,
; OUT UINT32 *RegisterOutEbx OPTIONAL,
; OUT UINT32 *RegisterOutEcx OPTIONAL,
; OUT UINT32 *RegisterOutEdx OPTIONAL
; )
;------------------------------------------------------------------------------
AsmCpuidEx PROC USES ebx
push ebp
mov ebp, esp
mov eax, [ebp + 12]
mov ecx, [ebp + 16]
cpuid
push ecx
mov ecx, [ebp + 20]
jecxz @F
mov [ecx], eax
@@:
mov ecx, [ebp + 24]
jecxz @F
mov [ecx], ebx
@@:
mov ecx, [ebp + 28]
jecxz @F
pop [ecx]
@@:
mov edx, [ebp + 32]
jecxz @F
mov [ecx], edx
@@:
mov eax, [ebp + 12]
leave
ret
AsmCpuidEx ENDP
END

48
MdePkg/Library/BaseLib/String.c
View File

@ -796,3 +796,51 @@ AsciiStrnCat (
ASSERT (AsciiStrSize (Destination) != 0);
return Destination;
}
/**
Converts an 8-bit value to an 8-bit BCD value.
Converts the 8-bit value specified by Value to BCD. The BCD value is
returned.
If Value >= 100, then ASSERT().
@param Value The 8-bit value to convert to BCD. Range 0..99.
@return The BCD value
**/
UINT8
EFIAPI
DecimalToBcd8 (
IN UINT8 Value
)
{
ASSERT (Value < 100);
return ((Value / 10) << 4) | (Value % 10);
}
/**
Converts an 8-bit BCD value to an 8-bit value.
Converts the 8-bit BCD value specified by Value to an 8-bit value. The 8-bit
value is returned.
If Value >= 0xA0, then ASSERT().
If (Value & 0x0F) >= 0x0A, then ASSERT().
@param Value The 8-bit BCD value to convert to an 8-bit value.
@return The 8-bit value is returned.
**/
UINT8
EFIAPI
BcdToDecimal8 (
IN UINT8 Value
)
{
ASSERT (Value < 0xa0);
ASSERT ((Value & 0xf) < 0xa);
return (Value >> 4) * 10 + (Value & 0xf);
}

6
MdePkg/Library/BaseLib/X64/CpuIdEx.asm
View File

@ -11,11 +11,11 @@
;
; Module Name:
;
; CpuId.Asm
; CpuIdEx.Asm
;
; Abstract:
;
; AsmCpuid function
; AsmCpuidEx function
;
; Notes:
;
@ -26,7 +26,7 @@
;------------------------------------------------------------------------------
; UINT32
; EFIAPI
; AsmCpuid (
; AsmCpuidEx (
; IN UINT32 RegisterInEax,
; IN UINT32 RegisterInEcx,
; OUT UINT32 *RegisterOutEax OPTIONAL,