mirror of
https://github.com/reactos/reactos.git
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257 lines
8.7 KiB
ArmAsm
257 lines
8.7 KiB
ArmAsm
/*
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* FILE: ntoskrnl/ke/i386/trap.s
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* COPYRIGHT: See COPYING in the top level directory
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* PURPOSE: System Traps, Entrypoints and Exitpoints
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* PROGRAMMER: Alex Ionescu (alex@relsoft.net)
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* Timo Kreuzer (timo.kreuzer@reactos.org)
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* NOTE: See asmmacro.S for the shared entry/exit code.
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*/
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/* INCLUDES ******************************************************************/
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#include <asm.inc>
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#include <ks386.inc>
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#include <internal/i386/asmmacro.S>
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MACRO(GENERATE_IDT_STUB, Vector)
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idt _KiUnexpectedInterrupt&Vector, INT_32_DPL0
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ENDM
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MACRO(GENERATE_INT_HANDLER, Vector)
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//.func KiUnexpectedInterrupt&Vector
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_KiUnexpectedInterrupt&Vector:
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/* This is a push instruction with 8bit operand. Since the instruction
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sign extends the value to 32 bits, we need to offset it */
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push (Vector - 128)
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jmp _KiEndUnexpectedRange@0
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//.endfunc
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ENDM
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/* GLOBALS *******************************************************************/
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.data
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ASSUME CS:nothing
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.align 16
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PUBLIC _KiIdt
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_KiIdt:
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/* This is the Software Interrupt Table that we handle in this file: */
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idt _KiTrap00, INT_32_DPL0 /* INT 00: Divide Error (#DE) */
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idt _KiTrap01, INT_32_DPL0 /* INT 01: Debug Exception (#DB) */
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idt _KiTrap02, INT_32_DPL0 /* INT 02: NMI Interrupt */
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idt _KiTrap03, INT_32_DPL3 /* INT 03: Breakpoint Exception (#BP) */
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idt _KiTrap04, INT_32_DPL3 /* INT 04: Overflow Exception (#OF) */
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idt _KiTrap05, INT_32_DPL0 /* INT 05: BOUND Range Exceeded (#BR) */
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idt _KiTrap06, INT_32_DPL0 /* INT 06: Invalid Opcode Code (#UD) */
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idt _KiTrap07, INT_32_DPL0 /* INT 07: Device Not Available (#NM) */
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idt _KiTrap08, INT_32_DPL0 /* INT 08: Double Fault Exception (#DF) */
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idt _KiTrap09, INT_32_DPL0 /* INT 09: RESERVED */
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idt _KiTrap0A, INT_32_DPL0 /* INT 0A: Invalid TSS Exception (#TS) */
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idt _KiTrap0B, INT_32_DPL0 /* INT 0B: Segment Not Present (#NP) */
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idt _KiTrap0C, INT_32_DPL0 /* INT 0C: Stack Fault Exception (#SS) */
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idt _KiTrap0D, INT_32_DPL0 /* INT 0D: General Protection (#GP) */
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idt _KiTrap0E, INT_32_DPL0 /* INT 0E: Page-Fault Exception (#PF) */
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idt _KiTrap0F, INT_32_DPL0 /* INT 0F: RESERVED */
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idt _KiTrap10, INT_32_DPL0 /* INT 10: x87 FPU Error (#MF) */
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idt _KiTrap11, INT_32_DPL0 /* INT 11: Align Check Exception (#AC) */
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idt _KiTrap0F, INT_32_DPL0 /* INT 12: Machine Check Exception (#MC)*/
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idt _KiTrap0F, INT_32_DPL0 /* INT 13: SIMD FPU Exception (#XF) */
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REPEAT 21
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idt _KiTrap0F, INT_32_DPL0 /* INT 14-28: UNDEFINED INTERRUPTS */
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ENDR
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idt _KiRaiseSecurityCheckFailure, INT_32_DPL3
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/* INT 29: Handler for __fastfail */
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idt _KiGetTickCount, INT_32_DPL3 /* INT 2A: Get Tick Count Handler */
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idt _KiCallbackReturn, INT_32_DPL3 /* INT 2B: User-Mode Callback Return */
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idt _KiRaiseAssertion, INT_32_DPL3 /* INT 2C: Debug Assertion Handler */
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idt _KiDebugService, INT_32_DPL3 /* INT 2D: Debug Service Handler */
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idt _KiSystemService, INT_32_DPL3 /* INT 2E: System Call Service Handler */
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idt _KiTrap0F, INT_32_DPL0 /* INT 2F: RESERVED */
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i = HEX(30)
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REPEAT 208
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GENERATE_IDT_STUB %i
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i = i + 1
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ENDR
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PUBLIC _KiIdtDescriptor
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_KiIdtDescriptor:
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.short 0
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.short HEX(7FF)
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.long _KiIdt
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PUBLIC _KiUnexpectedEntrySize
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_KiUnexpectedEntrySize:
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.long _KiUnexpectedInterrupt49 - _KiUnexpectedInterrupt48
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/******************************************************************************/
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.code
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PUBLIC _KiStartUnexpectedRange@0
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_KiStartUnexpectedRange@0:
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i = HEX(30)
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REPEAT 208
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GENERATE_INT_HANDLER %i
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i = i + 1
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ENDR
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TRAP_ENTRY KiTrap00, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiTrap01, KI_PUSH_FAKE_ERROR_CODE
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TASK_ENTRY KiTrap02, KI_NMI
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TRAP_ENTRY KiTrap03, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiTrap04, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiTrap05, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiTrap06, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiTrap07, KI_PUSH_FAKE_ERROR_CODE
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TASK_ENTRY KiTrap08, 0
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TRAP_ENTRY KiTrap09, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiTrap0A, 0
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TRAP_ENTRY KiTrap0B, 0
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TRAP_ENTRY KiTrap0C, 0
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TRAP_ENTRY KiTrap0D, 0
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TRAP_ENTRY KiTrap0E, 0
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TRAP_ENTRY KiTrap0F, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiTrap10, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiTrap11, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiTrap13, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiRaiseSecurityCheckFailure, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiGetTickCount, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiCallbackReturn, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiRaiseAssertion, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiDebugService, KI_PUSH_FAKE_ERROR_CODE
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TRAP_ENTRY KiUnexpectedInterruptTail, 0
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ALIGN 4
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EXTERN @KiInterruptTemplateHandler@8:PROC
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PUBLIC _KiInterruptTemplate
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_KiInterruptTemplate:
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CFI_STARTPROC
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KiEnterTrap KI_PUSH_FAKE_ERROR_CODE
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PUBLIC _KiInterruptTemplate2ndDispatch
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_KiInterruptTemplate2ndDispatch:
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mov edx, 0
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PUBLIC _KiInterruptTemplateObject
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_KiInterruptTemplateObject:
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mov eax, offset @KiInterruptTemplateHandler@8
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jmp eax
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PUBLIC _KiInterruptTemplateDispatch
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_KiInterruptTemplateDispatch:
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CFI_ENDPROC
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EXTERN @KiSystemServiceHandler@8:PROC
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PUBLIC _KiSystemService
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.PROC _KiSystemService
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FPO 0, 0, 0, 0, 1, FRAME_TRAP
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KiEnterTrap (KI_PUSH_FAKE_ERROR_CODE OR KI_NONVOLATILES_ONLY OR KI_DONT_SAVE_SEGS)
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KiCallHandler @KiSystemServiceHandler@8
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.ENDP
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PUBLIC _KiFastCallEntry
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.PROC _KiFastCallEntry
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FPO 0, 0, 0, 0, 1, FRAME_TRAP
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KiEnterTrap (KI_FAST_SYSTEM_CALL OR KI_NONVOLATILES_ONLY OR KI_DONT_SAVE_SEGS)
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KiCallHandler @KiSystemServiceHandler@8
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.ENDP
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PUBLIC _KiFastCallEntryWithSingleStep
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.PROC _KiFastCallEntryWithSingleStep
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FPO 0, 0, 0, 0, 1, FRAME_TRAP
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KiEnterTrap (KI_FAST_SYSTEM_CALL OR KI_NONVOLATILES_ONLY OR KI_DONT_SAVE_SEGS)
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or dword ptr [ecx + KTRAP_FRAME_EFLAGS], EFLAGS_TF
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KiCallHandler @KiSystemServiceHandler@8
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.ENDP
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PUBLIC _KiEndUnexpectedRange@0
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_KiEndUnexpectedRange@0:
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add dword ptr[esp], 128
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jmp _KiUnexpectedInterruptTail
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/* EXIT CODE *****************************************************************/
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KiTrapExitStub KiSystemCallReturn, (KI_RESTORE_EAX OR KI_RESTORE_EFLAGS OR KI_EXIT_JMP)
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KiTrapExitStub KiSystemCallSysExitReturn, (KI_RESTORE_EAX OR KI_RESTORE_FS OR KI_RESTORE_EFLAGS OR KI_EXIT_SYSCALL)
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KiTrapExitStub KiSystemCallTrapReturn, (KI_RESTORE_EAX OR KI_RESTORE_FS OR KI_EXIT_IRET)
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KiTrapExitStub KiEditedTrapReturn, (KI_RESTORE_VOLATILES OR KI_RESTORE_EFLAGS OR KI_EDITED_FRAME OR KI_EXIT_RET)
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KiTrapExitStub KiTrapReturn, (KI_RESTORE_VOLATILES OR KI_RESTORE_SEGMENTS OR KI_EXIT_IRET)
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KiTrapExitStub KiTrapReturnNoSegments, (KI_RESTORE_VOLATILES OR KI_EXIT_IRET)
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KiTrapExitStub KiTrapReturnNoSegmentsRet8,(KI_RESTORE_VOLATILES OR KI_RESTORE_EFLAGS OR KI_EXIT_RET8)
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EXTERN _PsConvertToGuiThread@0:PROC
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PUBLIC _KiConvertToGuiThread@0
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_KiConvertToGuiThread@0:
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/*
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* Converting to a GUI thread safely updates ESP in-place as well as the
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* current Thread->TrapFrame and EBP when KeSwitchKernelStack is called.
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*
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* However, PsConvertToGuiThread "helpfully" restores EBP to the original
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* caller's value, since it is considered a nonvolatile register. As such,
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* as soon as we're back after the conversion and we try to store the result
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* which will probably be in some stack variable (EBP-based), we'll crash as
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* we are touching the de-allocated non-expanded stack.
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*
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* Thus we need a way to update our EBP before EBP is touched, and the only
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* way to guarantee this is to do the call itself in assembly, use the EAX
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* register to store the result, fixup EBP, and then let the C code continue
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* on its merry way.
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*
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*/
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/* Save ebx */
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push ebx
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/* Calculate the stack frame offset in ebx */
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mov ebx, ebp
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sub ebx, esp
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/* Call the worker function */
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call _PsConvertToGuiThread@0
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/* Adjust ebp to the new stack */
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mov ebp, esp
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add ebp, ebx
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/* Restore ebx */
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pop ebx
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/* return to the caller */
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ret
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/*
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NTSTATUS
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NTAPI
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KiSystemCallTrampoline(IN PVOID Handler,
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IN PVOID Arguments,
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IN ULONG StackBytes);
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*/
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PUBLIC _KiSystemCallTrampoline@12
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_KiSystemCallTrampoline@12:
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push ebp
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mov ebp, esp
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push esi
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push edi
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/* Get handler */
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mov eax, [ebp + 8]
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/* Get arguments */
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mov esi, [ebp + 12]
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/* Get stack bytes */
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mov ecx, [ebp + 16]
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/* Copy args to the stack */
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sub esp, ecx
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mov edi, esp
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shr ecx, 2
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rep movsd
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call eax
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pop edi
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pop esi
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leave
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ret 12
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END
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