diff options
Diffstat (limited to 'src/VBox/VMM/VMMSwitcher/X86Stub.asm')
| -rw-r--r-- | src/VBox/VMM/VMMSwitcher/X86Stub.asm | 110 |
1 files changed, 110 insertions, 0 deletions
diff --git a/src/VBox/VMM/VMMSwitcher/X86Stub.asm b/src/VBox/VMM/VMMSwitcher/X86Stub.asm new file mode 100644 index 00000000..d4aa6cd4 --- /dev/null +++ b/src/VBox/VMM/VMMSwitcher/X86Stub.asm @@ -0,0 +1,110 @@ +; $Id: X86Stub.asm $ +;; @file +; VMM - World Switchers, X86 Stub. +; + +; +; Copyright (C) 2006-2019 Oracle Corporation +; +; This file is part of VirtualBox Open Source Edition (OSE), as +; available from http://www.virtualbox.org. This file is free software; +; you can redistribute it and/or modify it under the terms of the GNU +; General Public License (GPL) as published by the Free Software +; Foundation, in version 2 as it comes in the "COPYING" file of the +; VirtualBox OSE distribution. VirtualBox OSE is distributed in the +; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind. +; + +;******************************************************************************* +;* Defined Constants And Macros * +;******************************************************************************* +%define NAME_OVERLOAD(name) vmmR3SwitcherX86Stub_ %+ name + + +;******************************************************************************* +;* Header Files * +;******************************************************************************* +%include "VBox/asmdefs.mac" +%include "VBox/err.mac" +%include "VMMSwitcher.mac" + + +BEGINCODE +GLOBALNAME Start +BITS 32 + +BEGINPROC vmmR0ToRawMode + mov eax, VERR_VMM_SWITCHER_STUB + ret +ENDPROC vmmR0ToRawMode + +BEGINPROC vmmRCCallTrampoline +.tight_loop: + int3 + jmp .tight_loop +ENDPROC vmmRCCallTrampoline + +BEGINPROC vmmRCToHost + mov eax, VERR_VMM_SWITCHER_STUB + ret +ENDPROC vmmRCToHost + +BEGINPROC vmmRCToHostAsmNoReturn + mov eax, VERR_VMM_SWITCHER_STUB + ret +ENDPROC vmmRCToHostAsmNoReturn + +BEGINPROC vmmRCToHostAsm + mov eax, VERR_VMM_SWITCHER_STUB + ret +ENDPROC vmmRCToHostAsm + +GLOBALNAME End + +; +; The description string (in the text section). +; +NAME(Description): + db "X86 Stub." + db 0 + + +; +; Dummy fixups. +; +BEGINDATA +GLOBALNAME Fixups + db FIX_THE_END ; final entry. +GLOBALNAME FixupsEnd + + +;; +; The switcher definition structure. +ALIGNDATA(16) +GLOBALNAME Def + istruc VMMSWITCHERDEF + at VMMSWITCHERDEF.pvCode, RTCCPTR_DEF NAME(Start) + at VMMSWITCHERDEF.pvFixups, RTCCPTR_DEF NAME(Fixups) + at VMMSWITCHERDEF.pszDesc, RTCCPTR_DEF NAME(Description) + at VMMSWITCHERDEF.pfnRelocate, RTCCPTR_DEF 0 + at VMMSWITCHERDEF.enmType, dd VMMSWITCHER_X86_STUB + at VMMSWITCHERDEF.cbCode, dd NAME(End) - NAME(Start) + at VMMSWITCHERDEF.offR0ToRawMode, dd NAME(vmmR0ToRawMode) - NAME(Start) + at VMMSWITCHERDEF.offRCToHost, dd NAME(vmmRCToHost) - NAME(Start) + at VMMSWITCHERDEF.offRCCallTrampoline, dd NAME(vmmRCCallTrampoline) - NAME(Start) + at VMMSWITCHERDEF.offRCToHostAsm, dd NAME(vmmRCToHostAsm) - NAME(Start) + at VMMSWITCHERDEF.offRCToHostAsmNoReturn, dd NAME(vmmRCToHostAsmNoReturn) - NAME(Start) + ; disasm help + at VMMSWITCHERDEF.offHCCode0, dd 0 + at VMMSWITCHERDEF.cbHCCode0, dd NAME(vmmRCCallTrampoline) - NAME(Start) + at VMMSWITCHERDEF.offHCCode1, dd 0 + at VMMSWITCHERDEF.cbHCCode1, dd 0 + at VMMSWITCHERDEF.offIDCode0, dd 0 + at VMMSWITCHERDEF.cbIDCode0, dd 0 + at VMMSWITCHERDEF.offIDCode1, dd 0 + at VMMSWITCHERDEF.cbIDCode1, dd 0 + at VMMSWITCHERDEF.offGCCode, dd NAME(vmmRCCallTrampoline) - NAME(Start) + at VMMSWITCHERDEF.cbGCCode, dd NAME(End) - NAME(vmmRCCallTrampoline) + + iend + |