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UefiCpuPkg: Use FINIT instead of hex values

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https://bugzilla.tianocore.org/show_bug.cgi?id=560

Update X64 NASM file to match IA32 NASM file
and use FINIT instruction instead of hand
assembled hex values for the FINIT instruction.

Cc: Jeff Fan <jeff.fan@intel.com>
Cc: Liming Gao <liming.gao@intel.com>
Contributed-under: TianoCore Contribution Agreement 1.0
Signed-off-by: Michael D Kinney <michael.d.kinney@intel.com>
Reviewed-by: Jeff Fan <jeff.fan@intel.com>
This commit is contained in:
Michael Kinney 2017-05-04 15:33:06 -07:00
parent 5b78f30d81
commit b9dbc03e5a
1 changed files with 1 additions and 4 deletions
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5
UefiCpuPkg/Library/BaseUefiCpuLib/X64/InitializeFpu.nasm
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@ -41,10 +41,7 @@ ASM_PFX(InitializeFloatingPointUnits):
; ;
; Initialize floating point units ; Initialize floating point units
; ;
; The following opcodes stand for instruction 'finit' finit
; to be supported by some 64-bit assemblers
;
DB 0x9B, 0xDB, 0xE3
fldcw [mFpuControlWord] fldcw [mFpuControlWord]
; ;