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| author | Michael Kinney <michael.d.kinney@intel.com> | 2017-05-04 15:33:06 -0700 |
|---|---|---|
| committer | Guo Mang <mang.guo@intel.com> | 2017-07-12 11:24:47 +0800 |
| commit | e23aa28ff24f97ec5dc032d7f84e99671a809fbd (patch) | |
| tree | adc0f7e45c78d386d75776e40fc213a830913243 /Core | |
| parent | b86747bffd1f1230363db2a15557657ac6073114 (diff) | |
| download | edk2-platforms-e23aa28ff24f97ec5dc032d7f84e99671a809fbd.tar.xz | |
UefiCpuPkg: Use FINIT instead of hex values
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>
(cherry picked from commit b9dbc03e5a4c90b9e3efe0e0e8c014c428528261)
Diffstat (limited to 'Core')
| -rw-r--r-- | Core/UefiCpuPkg/Library/BaseUefiCpuLib/X64/InitializeFpu.nasm | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/Core/UefiCpuPkg/Library/BaseUefiCpuLib/X64/InitializeFpu.nasm b/Core/UefiCpuPkg/Library/BaseUefiCpuLib/X64/InitializeFpu.nasm index 404c199b35..d94a60f13e 100644 --- a/Core/UefiCpuPkg/Library/BaseUefiCpuLib/X64/InitializeFpu.nasm +++ b/Core/UefiCpuPkg/Library/BaseUefiCpuLib/X64/InitializeFpu.nasm @@ -41,10 +41,7 @@ ASM_PFX(InitializeFloatingPointUnits): ;
; Initialize floating point units
;
- ; The following opcodes stand for instruction 'finit'
- ; to be supported by some 64-bit assemblers
- ;
- DB 0x9B, 0xDB, 0xE3
+ finit
fldcw [mFpuControlWord]
;
|