1 | /* $Id: IOMRC.cpp 35346 2010-12-27 16:13:13Z vboxsync $ */
|
---|
2 | /** @file
|
---|
3 | * IOM - Input / Output Monitor - Guest Context.
|
---|
4 | */
|
---|
5 |
|
---|
6 | /*
|
---|
7 | * Copyright (C) 2006-2007 Oracle Corporation
|
---|
8 | *
|
---|
9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
---|
10 | * available from http://www.virtualbox.org. This file is free software;
|
---|
11 | * you can redistribute it and/or modify it under the terms of the GNU
|
---|
12 | * General Public License (GPL) as published by the Free Software
|
---|
13 | * Foundation, in version 2 as it comes in the "COPYING" file of the
|
---|
14 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
|
---|
15 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
|
---|
16 | */
|
---|
17 |
|
---|
18 |
|
---|
19 | /*******************************************************************************
|
---|
20 | * Header Files *
|
---|
21 | *******************************************************************************/
|
---|
22 | #define LOG_GROUP LOG_GROUP_IOM
|
---|
23 | #include <VBox/vmm/iom.h>
|
---|
24 | #include <VBox/vmm/cpum.h>
|
---|
25 | #include <VBox/vmm/pgm.h>
|
---|
26 | #include <VBox/vmm/selm.h>
|
---|
27 | #include <VBox/vmm/mm.h>
|
---|
28 | #include <VBox/vmm/em.h>
|
---|
29 | #include <VBox/vmm/pgm.h>
|
---|
30 | #include <VBox/vmm/trpm.h>
|
---|
31 | #include "IOMInternal.h"
|
---|
32 | #include <VBox/vmm/vm.h>
|
---|
33 |
|
---|
34 | #include <VBox/dis.h>
|
---|
35 | #include <VBox/disopcode.h>
|
---|
36 | #include <VBox/param.h>
|
---|
37 | #include <VBox/err.h>
|
---|
38 | #include <iprt/assert.h>
|
---|
39 | #include <VBox/log.h>
|
---|
40 | #include <iprt/asm.h>
|
---|
41 | #include <iprt/string.h>
|
---|
42 |
|
---|
43 |
|
---|
44 |
|
---|
45 | /**
|
---|
46 | * Attempts to service an IN/OUT instruction.
|
---|
47 | *
|
---|
48 | * The \#GP trap handler in GC will call this function if the opcode causing the
|
---|
49 | * trap is a in or out type instruction. (Call it indirectly via EM that is.)
|
---|
50 | *
|
---|
51 | * @returns Strict VBox status code. Informational status codes other than the one documented
|
---|
52 | * here are to be treated as internal failure. Use IOM_SUCCESS() to check for success.
|
---|
53 | * @retval VINF_SUCCESS Success.
|
---|
54 | * @retval VINF_EM_FIRST-VINF_EM_LAST Success with some exceptions (see IOM_SUCCESS()), the
|
---|
55 | * status code must be passed on to EM.
|
---|
56 | * @retval VINF_EM_RESCHEDULE_REM The exception was dispatched and cannot be executed in raw-mode. (TRPMRaiseXcptErr)
|
---|
57 | * @retval VINF_EM_RAW_EMULATE_INSTR Defer the read to the REM.
|
---|
58 | * @retval VINF_IOM_HC_IOPORT_READ Defer the read to ring-3. (R0/GC only)
|
---|
59 | * @retval VINF_EM_RAW_GUEST_TRAP The exception was left pending. (TRPMRaiseXcptErr)
|
---|
60 | * @retval VINF_TRPM_XCPT_DISPATCHED The exception was raised and dispatched for raw-mode execution. (TRPMRaiseXcptErr)
|
---|
61 | *
|
---|
62 | * @param pVM The virtual machine (GC pointer of course).
|
---|
63 | * @param pRegFrame Pointer to CPUMCTXCORE guest registers structure.
|
---|
64 | * @param pCpu Disassembler CPU state.
|
---|
65 | */
|
---|
66 | VMMRCDECL(VBOXSTRICTRC) IOMGCIOPortHandler(PVM pVM, PCPUMCTXCORE pRegFrame, PDISCPUSTATE pCpu)
|
---|
67 | {
|
---|
68 | switch (pCpu->pCurInstr->opcode)
|
---|
69 | {
|
---|
70 | case OP_IN:
|
---|
71 | return IOMInterpretIN(pVM, pRegFrame, pCpu);
|
---|
72 |
|
---|
73 | case OP_OUT:
|
---|
74 | return IOMInterpretOUT(pVM, pRegFrame, pCpu);
|
---|
75 |
|
---|
76 | case OP_INSB:
|
---|
77 | case OP_INSWD:
|
---|
78 | return IOMInterpretINS(pVM, pRegFrame, pCpu);
|
---|
79 |
|
---|
80 | case OP_OUTSB:
|
---|
81 | case OP_OUTSWD:
|
---|
82 | return IOMInterpretOUTS(pVM, pRegFrame, pCpu);
|
---|
83 |
|
---|
84 | /*
|
---|
85 | * The opcode wasn't know to us, freak out.
|
---|
86 | */
|
---|
87 | default:
|
---|
88 | AssertMsgFailed(("Unknown I/O port access opcode %d.\n", pCpu->pCurInstr->opcode));
|
---|
89 | return VERR_INTERNAL_ERROR;
|
---|
90 | }
|
---|
91 | }
|
---|
92 |
|
---|