TRPMR0A.asm revision c15034be878396fbeaeda6379adf4f218e008a41
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; TRPM - Host Context Ring-0
701efa93fe91e164d983fdc7b780b9f203381d0bvboxsync; Copyright (C) 2006 InnoTek Systemberatung GmbH
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; This file is part of VirtualBox Open Source Edition (OSE), as
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; available from http://www.virtualbox.org. This file is free software;
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; you can redistribute it and/or modify it under the terms of the GNU
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; General Public License as published by the Free Software Foundation,
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; distribution. VirtualBox OSE is distributed in the hope that it will
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; be useful, but WITHOUT ANY WARRANTY of any kind.
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; If you received this file as part of a commercial VirtualBox
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; distribution, then only the terms of your commercial VirtualBox
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; license agreement apply instead of the previous paragraph.
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync;*******************************************************************************
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync;* Header Files *
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync;*******************************************************************************
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; Calls the interrupt gate as if we received an interrupt while in Ring-0.
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; @param uIP x86:[ebp+8] msc:rcx gcc:rdi The interrupt gate IP.
d3cb168f4c128e4477c3f791d983f84075fb2835vboxsync; @param SelCS x86:[ebp+12] msc:dx gcc:si The interrupt gate CS.
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; @param RSP msc:r8 gcc:rdx The interrupt gate RSP. ~0 if no stack switch should take place. (only AMD64)
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync;DECLASM(void) trpmR0DispatchHostInterrupt(RTR0UINTPTR uIP, RTSEL SelCS, RTR0UINTPTR RSP);
de6ba1989c812829372828f1801b232b3e7f09bfvboxsyncBEGINPROC trpmR0DispatchHostInterrupt
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync mov xBP, xSP
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync%ifdef __AMD64__
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync mov r11, rsp ; save the RSP for the iret frame.
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync and rsp, 0fffffffffffffff0h ; align the stack. (do it unconditionally saves some jump mess)
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync ; switch stack?
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync %ifdef ASM_CALL64_MSC
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync cmp r8, 0ffffffffffffffffh
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync je .no_stack_switch
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync mov rsp, r8
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync cmp rdx, 0ffffffffffffffffh
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync je .no_stack_switch
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync mov rsp, rdx
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync.no_stack_switch:
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync ; create the iret frame
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync push 0 ; SS
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync push r11 ; RSP
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync pushfq ; RFLAGS
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync and dword [rsp], ~X86_EFL_IF
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync push rax ; CS
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync lea r10, [.return wrt rip] ; RIP
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync ; create the retf frame
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync %ifdef ASM_CALL64_MSC
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync movzx rdx, dx
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync cmp rdx, r11
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync je .dir_jump
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync movzx rsi, si
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync cmp rsi, r11
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync je .dir_jump
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync ; dispatch it
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync ; dispatch it by a jmp (don't mess up the IST stack)
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync %ifdef ASM_CALL64_MSC
8e2451f7a9a8e6e722d2065fe0eeb5df93799c7avboxsync%else ; 32-bit:
8e2451f7a9a8e6e722d2065fe0eeb5df93799c7avboxsync mov ecx, [ebp + 8] ; uIP
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync movzx edx, word [ebp + 12] ; SelCS
997c47dc1532875eb8e995bf9993dff13071c16fvboxsync ; create the iret frame
d3cb168f4c128e4477c3f791d983f84075fb2835vboxsync pushfd ; EFLAGS
d3cb168f4c128e4477c3f791d983f84075fb2835vboxsync and dword [esp], ~X86_EFL_IF
d3cb168f4c128e4477c3f791d983f84075fb2835vboxsync push cs ; CS
d3cb168f4c128e4477c3f791d983f84075fb2835vboxsync push .return ; EIP
d3cb168f4c128e4477c3f791d983f84075fb2835vboxsync ; create the retf frame
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync ; dispatch it!
de6ba1989c812829372828f1801b232b3e7f09bfvboxsyncENDPROC trpmR0DispatchHostInterrupt
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync%ifndef VBOX_WITHOUT_IDT_PATCHING
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; This is the alternative return from VMMR0Entry() used when
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; we need to dispatch an interrupt to the Host (we received it in GC).
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; As seen in TRPMR0SetupInterruptDispatcherFrame() the stack is different
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; than for the normal VMMR0Entry() return.
997c47dc1532875eb8e995bf9993dff13071c16fvboxsync; 18 iret frame
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; 14 retf selector (interrupt handler)
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; 10 retf offset (interrupt handler)
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; 0 pVM (esp here)
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; 24 iret frame
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; 18 retf selector (interrupt handler)
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; 10 retf offset (interrupt handler)
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; 8 uOperation
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; 0 pVM (rsp here)
de6ba1989c812829372828f1801b232b3e7f09bfvboxsyncBEGINPROC trpmR0InterruptDispatcher
997c47dc1532875eb8e995bf9993dff13071c16fvboxsync%ifdef __AMD64__
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync lea rsp, [rsp + 10h] ; skip pVM and uOperation
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync%else ; !__AMD64__
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync add esp, byte 4 ; skip pVM
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync%endif ; !__AMD64__
de6ba1989c812829372828f1801b232b3e7f09bfvboxsyncENDPROC trpmR0InterruptDispatcher
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync%endif ; !VBOX_WITHOUT_IDT_PATCHING
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; Issues a software interrupt to the specified interrupt vector.
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync; @param uActiveVector x86:[esp+4] msc:rcx gcc:rdi The vector number.
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync;DECLASM(void) trpmR0DispatchHostInterruptSimple(RTUINT uActiveVector);
de6ba1989c812829372828f1801b232b3e7f09bfvboxsyncBEGINPROC trpmR0DispatchHostInterruptSimple
997c47dc1532875eb8e995bf9993dff13071c16fvboxsync%ifdef __X86__
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync mov eax, [esp + 4]
0dcab00efb68dbd44bd653d4cb18aaaef7448898vboxsync jmp dword [.jmp_table + eax * 4]
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync lea r9, [.jmp_table wrt rip]
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync %ifdef ASM_CALL64_MSC
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync jmp qword [r9 + rcx * 8]
997c47dc1532875eb8e995bf9993dff13071c16fvboxsync jmp qword [r9 + rdi * 8]
de6ba1989c812829372828f1801b232b3e7f09bfvboxsyncRTCCPTR_DEF .int_ %+ i
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync%assign i i+1
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync ALIGNCODE(4)
de6ba1989c812829372828f1801b232b3e7f09bfvboxsync%assign i i+1
de6ba1989c812829372828f1801b232b3e7f09bfvboxsyncENDPROC trpmR0DispatchHostInterruptSimple