161 lines
5.3 KiB
NASM
161 lines
5.3 KiB
NASM
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;;
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;;; Microsoft Research Singularity
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;;;
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;;; Copyright (c) Microsoft Corporation. All rights reserved.
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;;;
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;;; Assembly code for Isal.Target class
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include hal.inc
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SYMFIX(?g_GetCurrentThread@Class_Microsoft_Singularity_Isal_Isa@@SIPAUStruct_Microsoft_Singularity_Isal_ThreadRecord@@XZ) proc
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GET_THREAD_CONTEXT PAX
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ret
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SYMFIX(?g_GetCurrentThread@Class_Microsoft_Singularity_Isal_Isa@@SIPAUStruct_Microsoft_Singularity_Isal_ThreadRecord@@XZ) endp
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SYMFIX(?g_GetCurrentCpu@Class_Microsoft_Singularity_Isal_Isa@@SIPAUStruct_Microsoft_Singularity_Isal_CpuRecord@@XZ) proc
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GET_PROCESSOR_CONTEXT PAX
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ret
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SYMFIX(?g_GetCurrentCpu@Class_Microsoft_Singularity_Isal_Isa@@SIPAUStruct_Microsoft_Singularity_Isal_CpuRecord@@XZ) endp
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ifdef SINGULARITY_KERNEL
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SYMFIX(?g_InitializeCurrentThread@Class_Microsoft_Singularity_Isal_Isa@@SIXPAUStruct_Microsoft_Singularity_Isal_ThreadRecord@@@Z) proc
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mov eax, [?c_currentThreadOffset@Class_Microsoft_Singularity_Isal_Isa@@2HA]
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mov PSEG:[eax], PCX
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ret
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SYMFIX(?g_InitializeCurrentThread@Class_Microsoft_Singularity_Isal_Isa@@SIXPAUStruct_Microsoft_Singularity_Isal_ThreadRecord@@@Z) endp
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SYMFIX(?g_SetCurrentThread@Class_Microsoft_Singularity_Isal_Isa@@SIXPAUStruct_Microsoft_Singularity_Isal_ThreadRecord@@@Z) proc
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mov eax, [?c_currentThreadOffset@Class_Microsoft_Singularity_Isal_Isa@@2HA]
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;; Must preserve active stack limit across thread context switch
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mov PDX, PSEG:[eax]
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mov PDX, [PDX].Struct_Microsoft_Singularity_Isal_ThreadRecord._activeStackLimit
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mov [PCX].Struct_Microsoft_Singularity_Isal_ThreadRecord._activeStackLimit, PDX
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mov PSEG:[eax], PCX
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ret
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SYMFIX(?g_SetCurrentThread@Class_Microsoft_Singularity_Isal_Isa@@SIXPAUStruct_Microsoft_Singularity_Isal_ThreadRecord@@@Z) endp
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SYMFIX(?g_InitializeCurrentCpu@Class_Microsoft_Singularity_Isal_Isa@@SIXPAUStruct_Microsoft_Singularity_Isal_CpuRecord@@@Z) proc
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mov eax, [?c_currentCpuOffset@Class_Microsoft_Singularity_Isal_Isa@@2HA]
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mov PSEG:[eax], PCX
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ret
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SYMFIX(?g_InitializeCurrentCpu@Class_Microsoft_Singularity_Isal_Isa@@SIXPAUStruct_Microsoft_Singularity_Isal_CpuRecord@@@Z) endp
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SYMFIX(?c_DefaultReturnFromInterrupt@Class_Microsoft_Singularity_Isal_Isa@@2EA) label byte
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IRETP
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SYMFIX(?g_SwitchToInterruptStackAndCallback@Class_Microsoft_Singularity_Isal_Isa@@SIPAUuintPtr@@PAUClass_Microsoft_Singularity_Isal_Isa_ICallback@@PAU2@@Z) proc
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;; use an ebp frame so we can easily restore the old stack
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push PBP
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mov PBP, PSP
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;; switch to the interrupt stack
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GET_CPU_RECORD_FIELD PAX, _interruptStackBegin
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mov PSP, PAX
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;; Save previous limit
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GET_THREAD_RECORD_FIELD PAX, _activeStackLimit
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push PAX
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;; set the new stack limit
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GET_CPU_RECORD_FIELD PAX, _interruptStackLimit
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SET_THREAD_RECORD_FIELD _activeStackLimit, PAX
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;; call the callback
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call SYMFIX(?g_DoCallback@Class_Microsoft_Singularity_Isal_Isa_ICallback@@SIPAUuintPtr@@PAU1@PAU2@@Z)
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;; restore the stack limit
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pop PCX
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SET_THREAD_RECORD_FIELD _activeStackLimit, PCX
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;; pop ebp frame
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mov PSP, PBP
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pop PBP
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ret
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SYMFIX(?g_SwitchToInterruptStackAndCallback@Class_Microsoft_Singularity_Isal_Isa@@SIPAUuintPtr@@PAUClass_Microsoft_Singularity_Isal_Isa_ICallback@@PAU2@@Z) endp
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endif
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SYMFIX(?g_GetCs@Class_Microsoft_Singularity_Isal_Isa@@SIPAUuintPtr@@XZ) proc
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mov PAX, cs
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ret
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SYMFIX(?g_GetCs@Class_Microsoft_Singularity_Isal_Isa@@SIPAUuintPtr@@XZ) endp
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SYMFIX(?g_InitFpu@Class_Microsoft_Singularity_Isal_Isa@@SIXXZ) proc
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finit
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mov PAX, 37Eh
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push PAX
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fldcw [PSP]
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pop PAX
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ret
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SYMFIX(?g_InitFpu@Class_Microsoft_Singularity_Isal_Isa@@SIXXZ) endp
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SYMFIX(?g_ReadFpuStatus@Class_Microsoft_Singularity_Isal_Isa@@Z@@XZ) proc
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xor PAX,PAX
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push PAX
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fnstsw [PSP]
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pop PAX
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ret
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SYMFIX(?g_ReadFpuStatus@Class_Microsoft_Singularity_Isal_Isa@@Z@@XZ) endp
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SYMFIX(?g_ClearFpuStatus@Class_Microsoft_Singularity_Isal_Isa@@Z@@XZ) proc
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fnclex
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ret
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SYMFIX(?g_ClearFpuStatus@Class_Microsoft_Singularity_Isal_Isa@@Z@@XZ) endp
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SYMFIX(?g_EnterUserMode@Class_Microsoft_Singularity_Isal_Isa@@SIXXZ) proc
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;; warning: preserve return values eax, edx (for returning from ABI)
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push PDX
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mov PCX, PSP
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mov PDX, ring3
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;;sysexit
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db 0fh
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db 35h
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ring3:
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pop PDX
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ifdef ISA_IX86
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mov cx, ss
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mov ds, cx
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mov es, cx
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endif
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mov cx, Struct_Microsoft_Singularity_Isal_IX_DescriptorTable_Gdt._pp + 3
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mov PSEG, cx
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ret
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SYMFIX(?g_EnterUserMode@Class_Microsoft_Singularity_Isal_Isa@@SIXXZ) endp
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SYMFIX(?g_GetFramePointer@Class_Microsoft_Singularity_Isal_Isa@@SIPAUuintPtr@@XZ) proc
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mov PAX, PBP
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ret
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SYMFIX(?g_GetFramePointer@Class_Microsoft_Singularity_Isal_Isa@@SIPAUuintPtr@@XZ) endp
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END
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