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|
;
; This file contains a 'Sample Driver' and is licensed as such
; under the terms of your license agreement with Intel or your
; vendor. This file may be modified by the user, subject to
; the additional terms of the license agreement
;
;-------------------------------------------------------------------------------
;
; Copyright (c) 1999 - 2011 Intel Corporation. All rights reserved
; This software and associated documentation (if any) is furnished
; under a license and may only be used or copied in accordance
; with the terms of the license. Except as permitted by such
; license, no part of this software or documentation may be
; reproduced, stored in a retrieval system, or transmitted in any
; form or by any means without the express written consent of
; Intel Corporation.
;
;
; Module Name:
;
; MpFuncs32.asm
;
; Abstract:
;
; This is the assembly code for MP support
;
;-------------------------------------------------------------------------------
include MpEqu.inc
;-------------------------------------------------------------------------------------
;RendezvousFunnelProc procedure follows. All APs execute their procedure. This
;procedure serializes all the AP processors through an Init sequence. It must be
;noted that APs arrive here very raw...ie: real mode, no stack.
;ALSO THIS PROCEDURE IS EXECUTED BY APs ONLY ON 16 BIT MODE. HENCE THIS PROC
;IS IN MACHINE CODE.
;-------------------------------------------------------------------------------------
;RendezvousFunnelProc (&WakeUpBuffer,MemAddress);
.686p
.model flat
.code
RendezvousFunnelProc PROC PUBLIC
RendezvousFunnelProcStart::
;Step-1: Grab a lock. At this point CS = 0x(vv00) and ip= 0x0.
db 8ch,0c8h ; mov ax,cs
db 8eh,0d8h ; mov ds,ax
db 8eh,0c0h ; mov es,ax
db 8eh,0d0h ; mov ss,ax
db 33h,0c0h ; xor ax,ax
db 8eh,0e0h ; mov fs,ax
db 8eh,0e8h ; mov gs,ax
db 0BEh ; opcode of mov si, mem16
dw BufferStartLocation ; mov si, BufferStartLocation
db 66h, 8Bh, 1Ch ; mov ebx,dword ptr [si]
db 0BFh ; opcode of mov di, mem16
dw PmodeOffsetLocation ; mov di, PmodeOffsetLocation
db 66h, 8Bh, 05h ; mov eax,dword ptr [di]
db 8Bh, 0F8h ; mov di, ax
db 83h, 0EFh,06h ; sub di, 06h
db 66h, 03h, 0C3h ; add eax, ebx
db 66h, 89h, 05h ; mov dword ptr [di],eax
db 0BEh ; opcode of mov si, mem16
dw GdtrLocation ; mov si, GdtrLocation
db 66h ; db 66h
db 2Eh, 0Fh, 01h, 14h ; lgdt fword ptr cs:[si]
db 33h, 0C0h ; xor ax, ax
db 8Eh, 0D8h ; mov ds, ax
db 0Fh, 20h, 0C0h ; mov eax, cr0 ;Get control register 0
db 66h, 83h, 0C8h, 03h ; or eax, 000000003h ;Set PE bit (bit #0) & MP
db 0Fh, 22h, 0C0h ; mov cr0, eax
db 66h, 67h, 0EAh ; far jump
dd 0h ; 32-bit offset
dw 20h ; 16-bit selector
NemInit:: ; protected mode entry point
db 66h, 0B8h, 18h, 00h ; mov ax, 18h
db 66h, 8Eh, 0D8h ; mov ds, ax
db 66h, 8Eh, 0C0h ; mov es, ax
db 66h, 8Eh, 0E0h ; mov fs, ax
db 66h, 8Eh, 0E8h ; mov gs, ax
db 66h, 8Eh, 0D0h ; mov ss, ax ; Flat mode setup.
mov esi, ebx
mov edi, esi
add edi, StartStateLocation
mov eax, 1
mov dword ptr [edi], eax
mov edi, esi
add edi, LockLocation
mov eax, NotVacantFlag
TestLock::
xchg dword ptr [edi], eax
cmp eax, NotVacantFlag
jz TestLock
ProgramStack::
mov edi, esi
add edi, StackSizeLocation
mov eax, dword ptr [edi]
mov edi, esi
add edi, StackStartAddressLocation
add eax, dword ptr [edi]
mov esp, eax
mov dword ptr [edi], eax
Releaselock::
mov eax, VacantFlag
mov edi, esi
add edi, LockLocation
xchg dword ptr [edi], eax
CProcedureInvoke::
mov edi, esi
add edi, MtrrValuesAddressLocation
mov eax, dword ptr [edi]
push eax
mov eax, esi
add eax, LockLocation
push eax
mov edi, esi
add edi, CProcedureLocation
mov eax, dword ptr [edi]
call eax
add esp, 8
cli
hlt
jmp $-2
RendezvousFunnelProc ENDP
SemaphoreStartAddress PROC C, SemaphoreAddress:PTR DWORD
mov eax, SemaphoreAddress
@@:
cmp dword ptr [eax], 0
jz @F
PAUSE32
jmp @B
@@:
ret
SemaphoreStartAddress ENDP
RendezvousFunnelProcEnd::
;-------------------------------------------------------------------------------------
; AsmGetAddressMap (&AddressMap);
;-------------------------------------------------------------------------------------
AsmGetAddressMap PROC near C PUBLIC
mov eax, RendezvousFunnelProcStart
ret
AsmGetAddressMap ENDP
AsmGetPmodeOffset PROC near C PUBLIC
mov eax, NemInit - RendezvousFunnelProcStart
ret
AsmGetPmodeOffset ENDP
AsmGetSemaphoreCheckOffset PROC near C PUBLIC
mov eax, SemaphoreStartAddress - RendezvousFunnelProcStart
ret
AsmGetSemaphoreCheckOffset ENDP
AsmCliHltLoop PROC near C PUBLIC
cli
hlt
jmp $-2
AsmCliHltLoop ENDP
END
|
