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Fix the risk of AP stack conflict.

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git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@10714 6f19259b-4bc3-4df7-8a09-765794883524
This commit is contained in:
xli24
2010-07-30 01:49:51 +00:00
parent 28d1916584
commit d6d858c4b7
8 changed files with 98 additions and 95 deletions
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45
EdkCompatibilityPkg/Compatibility/MpServicesOnFrameworkMpServicesThunk/X64/MpFuncs.S
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@@ -24,6 +24,7 @@
.equ IdtrLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x2A
.equ BufferStartLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x34
.equ Cr3OffsetLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x38
.equ ProcessorNumberLocation, RendezvousFunnelProcEnd - RendezvousFunnelProcStart + 0x38
#-------------------------------------------------------------------------------------
@@ -128,31 +129,33 @@ LongModeStart:
.byte 0x66
movw %ax,%ss
movl %esi, %edi
addl $LockLocation, %edi
movb $NotVacantFlag, %al
TestLock:
xchgb (%edi), %al
cmpb $NotVacantFlag, %al
jz TestLock
#
# ProgramStack
#
movl $0x1b, %ecx
rdmsr
andl $0xfffff000, %eax
addl $0x20, %eax
movl (%eax), %ebx
shrl $24, %ebx
xorq %rcx, %rcx
movl %esi,%edi
addl $ProcessorNumberLocation, %edi
movl (%edi, %ebx, 4), %ecx
ProgramStack:
movl %esi, %edi
addl $StackSizeLocation, %edi
movl %esi,%edi
addl $StackSizeLocation, %edi
movq (%edi), %rax
movl %esi, %edi
incq %rcx
mulq %rcx
movl %esi,%edi
addl $StackStartAddressLocation, %edi
addq (%edi), %rax
movq (%edi), %rbx
addq %rbx, %rax
movq %rax, %rsp
movq %rax, (%edi)
Releaselock:
movb $VacantFlag, %al
movl %esi, %edi
addl $LockLocation, %edi
xchgb (%edi), %al
#
# Call C Function