TRPM.cpp@ 79345

Last change on this file since 79345 was 77092, checked in by vboxsync, 6 years ago
VMM/TRPM: Nested VMX: bugref:9180 Assertions.
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File size: 82.0 KB

Line
1	/* $Id: TRPM.cpp 77092 2019-02-01 06:10:58Z vboxsync $ */
2	/** @file
3	* TRPM - The Trap Monitor.
4	*/
5
6	/*
7	* Copyright (C) 2006-2019 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	/** @page pg_trpm TRPM - The Trap Monitor
19	*
20	* The Trap Monitor (TRPM) is responsible for all trap and interrupt handling in
21	* the VMM. It plays a major role in raw-mode execution and a lesser one in the
22	* hardware assisted mode.
23	*
24	* Note first, the following will use trap as a collective term for faults,
25	* aborts and traps.
26	*
27	* @see grp_trpm
28	*
29	*
30	* @section sec_trpm_rc Raw-Mode Context
31	*
32	* When executing in the raw-mode context, TRPM will be managing the IDT and
33	* processing all traps and interrupts. It will also monitor the guest IDT
34	* because CSAM wishes to know about changes to it (trap/interrupt/syscall
35	* handler patching) and TRPM needs to keep the \#BP gate in sync (ring-3
36	* considerations). See TRPMR3SyncIDT and CSAMR3CheckGates.
37	*
38	* External interrupts will be forwarded to the host context by the quickest
39	* possible route where they will be reasserted. The other events will be
40	* categorized into virtualization traps, genuine guest traps and hypervisor
41	* traps. The latter group may be recoverable depending on when they happen and
42	* whether there is a handler for it, otherwise it will cause a guru meditation.
43	*
44	* TRPM distinguishes the between the first two (virt and guest traps) and the
45	* latter (hyper) by checking the CPL of the trapping code, if CPL == 0 then
46	* it's a hyper trap otherwise it's a virt/guest trap. There are three trap
47	* dispatcher tables, one ad-hoc for one time traps registered via
48	* TRPMGCSetTempHandler(), one for hyper traps and one for virt/guest traps.
49	* The latter two live in TRPMGCHandlersA.asm, the former in the VM structure.
50	*
51	* The raw-mode context trap handlers found in TRPMGCHandlers.cpp (for the most
52	* part), will call up the other VMM sub-systems depending on what it things
53	* happens. The two most busy traps are page faults (\#PF) and general
54	* protection fault/trap (\#GP).
55	*
56	* Before resuming guest code after having taken a virtualization trap or
57	* injected a guest trap, TRPM will check for pending forced action and
58	* every now and again let TM check for timed out timers. This allows code that
59	* is being executed as part of virtualization traps to signal ring-3 exits,
60	* page table resyncs and similar without necessarily using the status code. It
61	* also make sure we're more responsive to timers and requests from other
62	* threads (necessarily running on some different core/cpu in most cases).
63	*
64	*
65	* @section sec_trpm_all All Contexts
66	*
67	* TRPM will also dispatch / inject interrupts and traps to the guest, both when
68	* in raw-mode and when in hardware assisted mode. See TRPMInject().
69	*
70	*/
71
72
73	/*********************************************************************************************************************************
74	* Header Files *
75	*********************************************************************************************************************************/
76	#define LOG_GROUP LOG_GROUP_TRPM
77	#include <VBox/vmm/trpm.h>
78	#include <VBox/vmm/cpum.h>
79	#include <VBox/vmm/selm.h>
80	#include <VBox/vmm/ssm.h>
81	#include <VBox/vmm/pdmapi.h>
82	#include <VBox/vmm/em.h>
83	#include <VBox/vmm/pgm.h>
84	#include <VBox/vmm/dbgf.h>
85	#include <VBox/vmm/mm.h>
86	#include <VBox/vmm/stam.h>
87	#include <VBox/vmm/csam.h>
88	#include <VBox/vmm/patm.h>
89	#include <VBox/vmm/iem.h>
90	#include "TRPMInternal.h"
91	#include <VBox/vmm/vm.h>
92	#include <VBox/vmm/em.h>
93	#ifdef VBOX_WITH_REM
94	# include <VBox/vmm/rem.h>
95	#endif
96	#include <VBox/vmm/hm.h>
97
98	#include <VBox/err.h>
99	#include <VBox/param.h>
100	#include <VBox/log.h>
101	#include <iprt/assert.h>
102	#include <iprt/asm.h>
103	#include <iprt/string.h>
104	#include <iprt/alloc.h>
105
106
107	/*********************************************************************************************************************************
108	* Structures and Typedefs *
109	*********************************************************************************************************************************/
110	/**
111	* Trap handler function.
112	* @todo need to specialize this as we go along.
113	*/
114	typedef enum TRPMHANDLER
115	{
116	/** Generic Interrupt handler. */
117	TRPM_HANDLER_INT = 0,
118	/** Generic Trap handler. */
119	TRPM_HANDLER_TRAP,
120	/** Trap 8 (\#DF) handler. */
121	TRPM_HANDLER_TRAP_08,
122	/** Trap 12 (\#MC) handler. */
123	TRPM_HANDLER_TRAP_12,
124	/** Max. */
125	TRPM_HANDLER_MAX
126	} TRPMHANDLER, *PTRPMHANDLER;
127
128
129	/*********************************************************************************************************************************
130	* Global Variables *
131	*********************************************************************************************************************************/
132	/** Preinitialized IDT.
133	* The u16OffsetLow is a value of the TRPMHANDLER enum which TRPMR3Relocate()
134	* will use to pick the right address. The u16SegSel is always VMM CS.
135	*/
136	static VBOXIDTE_GENERIC g_aIdt[256] =
137	{
138	/* special trap handler - still, this is an interrupt gate not a trap gate... */
139	#define IDTE_TRAP(enm) { (unsigned)enm, 0, 0, VBOX_IDTE_TYPE1, VBOX_IDTE_TYPE2_INT_32, 0, 1, 0 }
140	/* generic trap handler. */
141	#define IDTE_TRAP_GEN() IDTE_TRAP(TRPM_HANDLER_TRAP)
142	/* special interrupt handler. */
143	#define IDTE_INT(enm) { (unsigned)enm, 0, 0, VBOX_IDTE_TYPE1, VBOX_IDTE_TYPE2_INT_32, 0, 1, 0 }
144	/* generic interrupt handler. */
145	#define IDTE_INT_GEN() IDTE_INT(TRPM_HANDLER_INT)
146	/* special task gate IDT entry (for critical exceptions like #DF). */
147	#define IDTE_TASK(enm) { (unsigned)enm, 0, 0, VBOX_IDTE_TYPE1, VBOX_IDTE_TYPE2_TASK, 0, 1, 0 }
148	/* draft, fixme later when the handler is written. */
149	#define IDTE_RESERVED() { 0, 0, 0, 0, 0, 0, 0, 0 }
150
151	/* N - M M - T - C - D i */
152	/* o - n o - y - o - e p */
153	/* - e n - p - d - s t */
154	/* - i - e - e - c . */
155	/* - c - - - r */
156	/* ============================================================= */
157	IDTE_TRAP_GEN(), /* 0 - #DE - F - N - Divide error */
158	IDTE_TRAP_GEN(), /* 1 - #DB - F/T - N - Single step, INT 1 instruction */
159	#ifdef VBOX_WITH_NMI
160	IDTE_TRAP_GEN(), /* 2 - - I - N - Non-Maskable Interrupt (NMI) */
161	#else
162	IDTE_INT_GEN(), /* 2 - - I - N - Non-Maskable Interrupt (NMI) */
163	#endif
164	IDTE_TRAP_GEN(), /* 3 - #BP - T - N - Breakpoint, INT 3 instruction. */
165	IDTE_TRAP_GEN(), /* 4 - #OF - T - N - Overflow, INTO instruction. */
166	IDTE_TRAP_GEN(), /* 5 - #BR - F - N - BOUND Range Exceeded, BOUND instruction. */
167	IDTE_TRAP_GEN(), /* 6 - #UD - F - N - Undefined(/Invalid) Opcode. */
168	IDTE_TRAP_GEN(), /* 7 - #NM - F - N - Device not available, FP or (F)WAIT instruction. */
169	IDTE_TASK(TRPM_HANDLER_TRAP_08), /* 8 - #DF - A - 0 - Double fault. */
170	IDTE_TRAP_GEN(), /* 9 - - F - N - Coprocessor Segment Overrun (obsolete). */
171	IDTE_TRAP_GEN(), /* a - #TS - F - Y - Invalid TSS, Taskswitch or TSS access. */
172	IDTE_TRAP_GEN(), /* b - #NP - F - Y - Segment not present. */
173	IDTE_TRAP_GEN(), /* c - #SS - F - Y - Stack-Segment fault. */
174	IDTE_TRAP_GEN(), /* d - #GP - F - Y - General protection fault. */
175	IDTE_TRAP_GEN(), /* e - #PF - F - Y - Page fault. - interrupt gate!!! */
176	IDTE_RESERVED(), /* f - - - - Intel Reserved. Do not use. */
177	IDTE_TRAP_GEN(), /* 10 - #MF - F - N - x86 FPU Floating-Point Error (Math fault), FP or (F)WAIT instruction. */
178	IDTE_TRAP_GEN(), /* 11 - #AC - F - 0 - Alignment Check. */
179	IDTE_TRAP(TRPM_HANDLER_TRAP_12), /* 12 - #MC - A - N - Machine Check. */
180	IDTE_TRAP_GEN(), /* 13 - #XF - F - N - SIMD Floating-Point Exception. */
181	IDTE_RESERVED(), /* 14 - - - - Intel Reserved. Do not use. */
182	IDTE_RESERVED(), /* 15 - - - - Intel Reserved. Do not use. */
183	IDTE_RESERVED(), /* 16 - - - - Intel Reserved. Do not use. */
184	IDTE_RESERVED(), /* 17 - - - - Intel Reserved. Do not use. */
185	IDTE_RESERVED(), /* 18 - - - - Intel Reserved. Do not use. */
186	IDTE_RESERVED(), /* 19 - - - - Intel Reserved. Do not use. */
187	IDTE_RESERVED(), /* 1a - - - - Intel Reserved. Do not use. */
188	IDTE_RESERVED(), /* 1b - - - - Intel Reserved. Do not use. */
189	IDTE_RESERVED(), /* 1c - - - - Intel Reserved. Do not use. */
190	IDTE_RESERVED(), /* 1d - - - - Intel Reserved. Do not use. */
191	IDTE_RESERVED(), /* 1e - - - - Intel Reserved. Do not use. */
192	IDTE_RESERVED(), /* 1f - - - - Intel Reserved. Do not use. */
193	IDTE_INT_GEN(), /* 20 - - I - - User defined Interrupts, external of INT n. */
194	IDTE_INT_GEN(), /* 21 - - I - - User defined Interrupts, external of INT n. */
195	IDTE_INT_GEN(), /* 22 - - I - - User defined Interrupts, external of INT n. */
196	IDTE_INT_GEN(), /* 23 - - I - - User defined Interrupts, external of INT n. */
197	IDTE_INT_GEN(), /* 24 - - I - - User defined Interrupts, external of INT n. */
198	IDTE_INT_GEN(), /* 25 - - I - - User defined Interrupts, external of INT n. */
199	IDTE_INT_GEN(), /* 26 - - I - - User defined Interrupts, external of INT n. */
200	IDTE_INT_GEN(), /* 27 - - I - - User defined Interrupts, external of INT n. */
201	IDTE_INT_GEN(), /* 28 - - I - - User defined Interrupts, external of INT n. */
202	IDTE_INT_GEN(), /* 29 - - I - - User defined Interrupts, external of INT n. */
203	IDTE_INT_GEN(), /* 2a - - I - - User defined Interrupts, external of INT n. */
204	IDTE_INT_GEN(), /* 2b - - I - - User defined Interrupts, external of INT n. */
205	IDTE_INT_GEN(), /* 2c - - I - - User defined Interrupts, external of INT n. */
206	IDTE_INT_GEN(), /* 2d - - I - - User defined Interrupts, external of INT n. */
207	IDTE_INT_GEN(), /* 2e - - I - - User defined Interrupts, external of INT n. */
208	IDTE_INT_GEN(), /* 2f - - I - - User defined Interrupts, external of INT n. */
209	IDTE_INT_GEN(), /* 30 - - I - - User defined Interrupts, external of INT n. */
210	IDTE_INT_GEN(), /* 31 - - I - - User defined Interrupts, external of INT n. */
211	IDTE_INT_GEN(), /* 32 - - I - - User defined Interrupts, external of INT n. */
212	IDTE_INT_GEN(), /* 33 - - I - - User defined Interrupts, external of INT n. */
213	IDTE_INT_GEN(), /* 34 - - I - - User defined Interrupts, external of INT n. */
214	IDTE_INT_GEN(), /* 35 - - I - - User defined Interrupts, external of INT n. */
215	IDTE_INT_GEN(), /* 36 - - I - - User defined Interrupts, external of INT n. */
216	IDTE_INT_GEN(), /* 37 - - I - - User defined Interrupts, external of INT n. */
217	IDTE_INT_GEN(), /* 38 - - I - - User defined Interrupts, external of INT n. */
218	IDTE_INT_GEN(), /* 39 - - I - - User defined Interrupts, external of INT n. */
219	IDTE_INT_GEN(), /* 3a - - I - - User defined Interrupts, external of INT n. */
220	IDTE_INT_GEN(), /* 3b - - I - - User defined Interrupts, external of INT n. */
221	IDTE_INT_GEN(), /* 3c - - I - - User defined Interrupts, external of INT n. */
222	IDTE_INT_GEN(), /* 3d - - I - - User defined Interrupts, external of INT n. */
223	IDTE_INT_GEN(), /* 3e - - I - - User defined Interrupts, external of INT n. */
224	IDTE_INT_GEN(), /* 3f - - I - - User defined Interrupts, external of INT n. */
225	IDTE_INT_GEN(), /* 40 - - I - - User defined Interrupts, external of INT n. */
226	IDTE_INT_GEN(), /* 41 - - I - - User defined Interrupts, external of INT n. */
227	IDTE_INT_GEN(), /* 42 - - I - - User defined Interrupts, external of INT n. */
228	IDTE_INT_GEN(), /* 43 - - I - - User defined Interrupts, external of INT n. */
229	IDTE_INT_GEN(), /* 44 - - I - - User defined Interrupts, external of INT n. */
230	IDTE_INT_GEN(), /* 45 - - I - - User defined Interrupts, external of INT n. */
231	IDTE_INT_GEN(), /* 46 - - I - - User defined Interrupts, external of INT n. */
232	IDTE_INT_GEN(), /* 47 - - I - - User defined Interrupts, external of INT n. */
233	IDTE_INT_GEN(), /* 48 - - I - - User defined Interrupts, external of INT n. */
234	IDTE_INT_GEN(), /* 49 - - I - - User defined Interrupts, external of INT n. */
235	IDTE_INT_GEN(), /* 4a - - I - - User defined Interrupts, external of INT n. */
236	IDTE_INT_GEN(), /* 4b - - I - - User defined Interrupts, external of INT n. */
237	IDTE_INT_GEN(), /* 4c - - I - - User defined Interrupts, external of INT n. */
238	IDTE_INT_GEN(), /* 4d - - I - - User defined Interrupts, external of INT n. */
239	IDTE_INT_GEN(), /* 4e - - I - - User defined Interrupts, external of INT n. */
240	IDTE_INT_GEN(), /* 4f - - I - - User defined Interrupts, external of INT n. */
241	IDTE_INT_GEN(), /* 50 - - I - - User defined Interrupts, external of INT n. */
242	IDTE_INT_GEN(), /* 51 - - I - - User defined Interrupts, external of INT n. */
243	IDTE_INT_GEN(), /* 52 - - I - - User defined Interrupts, external of INT n. */
244	IDTE_INT_GEN(), /* 53 - - I - - User defined Interrupts, external of INT n. */
245	IDTE_INT_GEN(), /* 54 - - I - - User defined Interrupts, external of INT n. */
246	IDTE_INT_GEN(), /* 55 - - I - - User defined Interrupts, external of INT n. */
247	IDTE_INT_GEN(), /* 56 - - I - - User defined Interrupts, external of INT n. */
248	IDTE_INT_GEN(), /* 57 - - I - - User defined Interrupts, external of INT n. */
249	IDTE_INT_GEN(), /* 58 - - I - - User defined Interrupts, external of INT n. */
250	IDTE_INT_GEN(), /* 59 - - I - - User defined Interrupts, external of INT n. */
251	IDTE_INT_GEN(), /* 5a - - I - - User defined Interrupts, external of INT n. */
252	IDTE_INT_GEN(), /* 5b - - I - - User defined Interrupts, external of INT n. */
253	IDTE_INT_GEN(), /* 5c - - I - - User defined Interrupts, external of INT n. */
254	IDTE_INT_GEN(), /* 5d - - I - - User defined Interrupts, external of INT n. */
255	IDTE_INT_GEN(), /* 5e - - I - - User defined Interrupts, external of INT n. */
256	IDTE_INT_GEN(), /* 5f - - I - - User defined Interrupts, external of INT n. */
257	IDTE_INT_GEN(), /* 60 - - I - - User defined Interrupts, external of INT n. */
258	IDTE_INT_GEN(), /* 61 - - I - - User defined Interrupts, external of INT n. */
259	IDTE_INT_GEN(), /* 62 - - I - - User defined Interrupts, external of INT n. */
260	IDTE_INT_GEN(), /* 63 - - I - - User defined Interrupts, external of INT n. */
261	IDTE_INT_GEN(), /* 64 - - I - - User defined Interrupts, external of INT n. */
262	IDTE_INT_GEN(), /* 65 - - I - - User defined Interrupts, external of INT n. */
263	IDTE_INT_GEN(), /* 66 - - I - - User defined Interrupts, external of INT n. */
264	IDTE_INT_GEN(), /* 67 - - I - - User defined Interrupts, external of INT n. */
265	IDTE_INT_GEN(), /* 68 - - I - - User defined Interrupts, external of INT n. */
266	IDTE_INT_GEN(), /* 69 - - I - - User defined Interrupts, external of INT n. */
267	IDTE_INT_GEN(), /* 6a - - I - - User defined Interrupts, external of INT n. */
268	IDTE_INT_GEN(), /* 6b - - I - - User defined Interrupts, external of INT n. */
269	IDTE_INT_GEN(), /* 6c - - I - - User defined Interrupts, external of INT n. */
270	IDTE_INT_GEN(), /* 6d - - I - - User defined Interrupts, external of INT n. */
271	IDTE_INT_GEN(), /* 6e - - I - - User defined Interrupts, external of INT n. */
272	IDTE_INT_GEN(), /* 6f - - I - - User defined Interrupts, external of INT n. */
273	IDTE_INT_GEN(), /* 70 - - I - - User defined Interrupts, external of INT n. */
274	IDTE_INT_GEN(), /* 71 - - I - - User defined Interrupts, external of INT n. */
275	IDTE_INT_GEN(), /* 72 - - I - - User defined Interrupts, external of INT n. */
276	IDTE_INT_GEN(), /* 73 - - I - - User defined Interrupts, external of INT n. */
277	IDTE_INT_GEN(), /* 74 - - I - - User defined Interrupts, external of INT n. */
278	IDTE_INT_GEN(), /* 75 - - I - - User defined Interrupts, external of INT n. */
279	IDTE_INT_GEN(), /* 76 - - I - - User defined Interrupts, external of INT n. */
280	IDTE_INT_GEN(), /* 77 - - I - - User defined Interrupts, external of INT n. */
281	IDTE_INT_GEN(), /* 78 - - I - - User defined Interrupts, external of INT n. */
282	IDTE_INT_GEN(), /* 79 - - I - - User defined Interrupts, external of INT n. */
283	IDTE_INT_GEN(), /* 7a - - I - - User defined Interrupts, external of INT n. */
284	IDTE_INT_GEN(), /* 7b - - I - - User defined Interrupts, external of INT n. */
285	IDTE_INT_GEN(), /* 7c - - I - - User defined Interrupts, external of INT n. */
286	IDTE_INT_GEN(), /* 7d - - I - - User defined Interrupts, external of INT n. */
287	IDTE_INT_GEN(), /* 7e - - I - - User defined Interrupts, external of INT n. */
288	IDTE_INT_GEN(), /* 7f - - I - - User defined Interrupts, external of INT n. */
289	IDTE_INT_GEN(), /* 80 - - I - - User defined Interrupts, external of INT n. */
290	IDTE_INT_GEN(), /* 81 - - I - - User defined Interrupts, external of INT n. */
291	IDTE_INT_GEN(), /* 82 - - I - - User defined Interrupts, external of INT n. */
292	IDTE_INT_GEN(), /* 83 - - I - - User defined Interrupts, external of INT n. */
293	IDTE_INT_GEN(), /* 84 - - I - - User defined Interrupts, external of INT n. */
294	IDTE_INT_GEN(), /* 85 - - I - - User defined Interrupts, external of INT n. */
295	IDTE_INT_GEN(), /* 86 - - I - - User defined Interrupts, external of INT n. */
296	IDTE_INT_GEN(), /* 87 - - I - - User defined Interrupts, external of INT n. */
297	IDTE_INT_GEN(), /* 88 - - I - - User defined Interrupts, external of INT n. */
298	IDTE_INT_GEN(), /* 89 - - I - - User defined Interrupts, external of INT n. */
299	IDTE_INT_GEN(), /* 8a - - I - - User defined Interrupts, external of INT n. */
300	IDTE_INT_GEN(), /* 8b - - I - - User defined Interrupts, external of INT n. */
301	IDTE_INT_GEN(), /* 8c - - I - - User defined Interrupts, external of INT n. */
302	IDTE_INT_GEN(), /* 8d - - I - - User defined Interrupts, external of INT n. */
303	IDTE_INT_GEN(), /* 8e - - I - - User defined Interrupts, external of INT n. */
304	IDTE_INT_GEN(), /* 8f - - I - - User defined Interrupts, external of INT n. */
305	IDTE_INT_GEN(), /* 90 - - I - - User defined Interrupts, external of INT n. */
306	IDTE_INT_GEN(), /* 91 - - I - - User defined Interrupts, external of INT n. */
307	IDTE_INT_GEN(), /* 92 - - I - - User defined Interrupts, external of INT n. */
308	IDTE_INT_GEN(), /* 93 - - I - - User defined Interrupts, external of INT n. */
309	IDTE_INT_GEN(), /* 94 - - I - - User defined Interrupts, external of INT n. */
310	IDTE_INT_GEN(), /* 95 - - I - - User defined Interrupts, external of INT n. */
311	IDTE_INT_GEN(), /* 96 - - I - - User defined Interrupts, external of INT n. */
312	IDTE_INT_GEN(), /* 97 - - I - - User defined Interrupts, external of INT n. */
313	IDTE_INT_GEN(), /* 98 - - I - - User defined Interrupts, external of INT n. */
314	IDTE_INT_GEN(), /* 99 - - I - - User defined Interrupts, external of INT n. */
315	IDTE_INT_GEN(), /* 9a - - I - - User defined Interrupts, external of INT n. */
316	IDTE_INT_GEN(), /* 9b - - I - - User defined Interrupts, external of INT n. */
317	IDTE_INT_GEN(), /* 9c - - I - - User defined Interrupts, external of INT n. */
318	IDTE_INT_GEN(), /* 9d - - I - - User defined Interrupts, external of INT n. */
319	IDTE_INT_GEN(), /* 9e - - I - - User defined Interrupts, external of INT n. */
320	IDTE_INT_GEN(), /* 9f - - I - - User defined Interrupts, external of INT n. */
321	IDTE_INT_GEN(), /* a0 - - I - - User defined Interrupts, external of INT n. */
322	IDTE_INT_GEN(), /* a1 - - I - - User defined Interrupts, external of INT n. */
323	IDTE_INT_GEN(), /* a2 - - I - - User defined Interrupts, external of INT n. */
324	IDTE_INT_GEN(), /* a3 - - I - - User defined Interrupts, external of INT n. */
325	IDTE_INT_GEN(), /* a4 - - I - - User defined Interrupts, external of INT n. */
326	IDTE_INT_GEN(), /* a5 - - I - - User defined Interrupts, external of INT n. */
327	IDTE_INT_GEN(), /* a6 - - I - - User defined Interrupts, external of INT n. */
328	IDTE_INT_GEN(), /* a7 - - I - - User defined Interrupts, external of INT n. */
329	IDTE_INT_GEN(), /* a8 - - I - - User defined Interrupts, external of INT n. */
330	IDTE_INT_GEN(), /* a9 - - I - - User defined Interrupts, external of INT n. */
331	IDTE_INT_GEN(), /* aa - - I - - User defined Interrupts, external of INT n. */
332	IDTE_INT_GEN(), /* ab - - I - - User defined Interrupts, external of INT n. */
333	IDTE_INT_GEN(), /* ac - - I - - User defined Interrupts, external of INT n. */
334	IDTE_INT_GEN(), /* ad - - I - - User defined Interrupts, external of INT n. */
335	IDTE_INT_GEN(), /* ae - - I - - User defined Interrupts, external of INT n. */
336	IDTE_INT_GEN(), /* af - - I - - User defined Interrupts, external of INT n. */
337	IDTE_INT_GEN(), /* b0 - - I - - User defined Interrupts, external of INT n. */
338	IDTE_INT_GEN(), /* b1 - - I - - User defined Interrupts, external of INT n. */
339	IDTE_INT_GEN(), /* b2 - - I - - User defined Interrupts, external of INT n. */
340	IDTE_INT_GEN(), /* b3 - - I - - User defined Interrupts, external of INT n. */
341	IDTE_INT_GEN(), /* b4 - - I - - User defined Interrupts, external of INT n. */
342	IDTE_INT_GEN(), /* b5 - - I - - User defined Interrupts, external of INT n. */
343	IDTE_INT_GEN(), /* b6 - - I - - User defined Interrupts, external of INT n. */
344	IDTE_INT_GEN(), /* b7 - - I - - User defined Interrupts, external of INT n. */
345	IDTE_INT_GEN(), /* b8 - - I - - User defined Interrupts, external of INT n. */
346	IDTE_INT_GEN(), /* b9 - - I - - User defined Interrupts, external of INT n. */
347	IDTE_INT_GEN(), /* ba - - I - - User defined Interrupts, external of INT n. */
348	IDTE_INT_GEN(), /* bb - - I - - User defined Interrupts, external of INT n. */
349	IDTE_INT_GEN(), /* bc - - I - - User defined Interrupts, external of INT n. */
350	IDTE_INT_GEN(), /* bd - - I - - User defined Interrupts, external of INT n. */
351	IDTE_INT_GEN(), /* be - - I - - User defined Interrupts, external of INT n. */
352	IDTE_INT_GEN(), /* bf - - I - - User defined Interrupts, external of INT n. */
353	IDTE_INT_GEN(), /* c0 - - I - - User defined Interrupts, external of INT n. */
354	IDTE_INT_GEN(), /* c1 - - I - - User defined Interrupts, external of INT n. */
355	IDTE_INT_GEN(), /* c2 - - I - - User defined Interrupts, external of INT n. */
356	IDTE_INT_GEN(), /* c3 - - I - - User defined Interrupts, external of INT n. */
357	IDTE_INT_GEN(), /* c4 - - I - - User defined Interrupts, external of INT n. */
358	IDTE_INT_GEN(), /* c5 - - I - - User defined Interrupts, external of INT n. */
359	IDTE_INT_GEN(), /* c6 - - I - - User defined Interrupts, external of INT n. */
360	IDTE_INT_GEN(), /* c7 - - I - - User defined Interrupts, external of INT n. */
361	IDTE_INT_GEN(), /* c8 - - I - - User defined Interrupts, external of INT n. */
362	IDTE_INT_GEN(), /* c9 - - I - - User defined Interrupts, external of INT n. */
363	IDTE_INT_GEN(), /* ca - - I - - User defined Interrupts, external of INT n. */
364	IDTE_INT_GEN(), /* cb - - I - - User defined Interrupts, external of INT n. */
365	IDTE_INT_GEN(), /* cc - - I - - User defined Interrupts, external of INT n. */
366	IDTE_INT_GEN(), /* cd - - I - - User defined Interrupts, external of INT n. */
367	IDTE_INT_GEN(), /* ce - - I - - User defined Interrupts, external of INT n. */
368	IDTE_INT_GEN(), /* cf - - I - - User defined Interrupts, external of INT n. */
369	IDTE_INT_GEN(), /* d0 - - I - - User defined Interrupts, external of INT n. */
370	IDTE_INT_GEN(), /* d1 - - I - - User defined Interrupts, external of INT n. */
371	IDTE_INT_GEN(), /* d2 - - I - - User defined Interrupts, external of INT n. */
372	IDTE_INT_GEN(), /* d3 - - I - - User defined Interrupts, external of INT n. */
373	IDTE_INT_GEN(), /* d4 - - I - - User defined Interrupts, external of INT n. */
374	IDTE_INT_GEN(), /* d5 - - I - - User defined Interrupts, external of INT n. */
375	IDTE_INT_GEN(), /* d6 - - I - - User defined Interrupts, external of INT n. */
376	IDTE_INT_GEN(), /* d7 - - I - - User defined Interrupts, external of INT n. */
377	IDTE_INT_GEN(), /* d8 - - I - - User defined Interrupts, external of INT n. */
378	IDTE_INT_GEN(), /* d9 - - I - - User defined Interrupts, external of INT n. */
379	IDTE_INT_GEN(), /* da - - I - - User defined Interrupts, external of INT n. */
380	IDTE_INT_GEN(), /* db - - I - - User defined Interrupts, external of INT n. */
381	IDTE_INT_GEN(), /* dc - - I - - User defined Interrupts, external of INT n. */
382	IDTE_INT_GEN(), /* dd - - I - - User defined Interrupts, external of INT n. */
383	IDTE_INT_GEN(), /* de - - I - - User defined Interrupts, external of INT n. */
384	IDTE_INT_GEN(), /* df - - I - - User defined Interrupts, external of INT n. */
385	IDTE_INT_GEN(), /* e0 - - I - - User defined Interrupts, external of INT n. */
386	IDTE_INT_GEN(), /* e1 - - I - - User defined Interrupts, external of INT n. */
387	IDTE_INT_GEN(), /* e2 - - I - - User defined Interrupts, external of INT n. */
388	IDTE_INT_GEN(), /* e3 - - I - - User defined Interrupts, external of INT n. */
389	IDTE_INT_GEN(), /* e4 - - I - - User defined Interrupts, external of INT n. */
390	IDTE_INT_GEN(), /* e5 - - I - - User defined Interrupts, external of INT n. */
391	IDTE_INT_GEN(), /* e6 - - I - - User defined Interrupts, external of INT n. */
392	IDTE_INT_GEN(), /* e7 - - I - - User defined Interrupts, external of INT n. */
393	IDTE_INT_GEN(), /* e8 - - I - - User defined Interrupts, external of INT n. */
394	IDTE_INT_GEN(), /* e9 - - I - - User defined Interrupts, external of INT n. */
395	IDTE_INT_GEN(), /* ea - - I - - User defined Interrupts, external of INT n. */
396	IDTE_INT_GEN(), /* eb - - I - - User defined Interrupts, external of INT n. */
397	IDTE_INT_GEN(), /* ec - - I - - User defined Interrupts, external of INT n. */
398	IDTE_INT_GEN(), /* ed - - I - - User defined Interrupts, external of INT n. */
399	IDTE_INT_GEN(), /* ee - - I - - User defined Interrupts, external of INT n. */
400	IDTE_INT_GEN(), /* ef - - I - - User defined Interrupts, external of INT n. */
401	IDTE_INT_GEN(), /* f0 - - I - - User defined Interrupts, external of INT n. */
402	IDTE_INT_GEN(), /* f1 - - I - - User defined Interrupts, external of INT n. */
403	IDTE_INT_GEN(), /* f2 - - I - - User defined Interrupts, external of INT n. */
404	IDTE_INT_GEN(), /* f3 - - I - - User defined Interrupts, external of INT n. */
405	IDTE_INT_GEN(), /* f4 - - I - - User defined Interrupts, external of INT n. */
406	IDTE_INT_GEN(), /* f5 - - I - - User defined Interrupts, external of INT n. */
407	IDTE_INT_GEN(), /* f6 - - I - - User defined Interrupts, external of INT n. */
408	IDTE_INT_GEN(), /* f7 - - I - - User defined Interrupts, external of INT n. */
409	IDTE_INT_GEN(), /* f8 - - I - - User defined Interrupts, external of INT n. */
410	IDTE_INT_GEN(), /* f9 - - I - - User defined Interrupts, external of INT n. */
411	IDTE_INT_GEN(), /* fa - - I - - User defined Interrupts, external of INT n. */
412	IDTE_INT_GEN(), /* fb - - I - - User defined Interrupts, external of INT n. */
413	IDTE_INT_GEN(), /* fc - - I - - User defined Interrupts, external of INT n. */
414	IDTE_INT_GEN(), /* fd - - I - - User defined Interrupts, external of INT n. */
415	IDTE_INT_GEN(), /* fe - - I - - User defined Interrupts, external of INT n. */
416	IDTE_INT_GEN(), /* ff - - I - - User defined Interrupts, external of INT n. */
417	#undef IDTE_TRAP
418	#undef IDTE_TRAP_GEN
419	#undef IDTE_INT
420	#undef IDTE_INT_GEN
421	#undef IDTE_TASK
422	#undef IDTE_UNUSED
423	#undef IDTE_RESERVED
424	};
425
426
427	/** TRPM saved state version. */
428	#define TRPM_SAVED_STATE_VERSION 9
429	#define TRPM_SAVED_STATE_VERSION_UNI 8 /* SMP support bumped the version */
430
431
432	/*********************************************************************************************************************************
433	* Internal Functions *
434	*********************************************************************************************************************************/
435	static DECLCALLBACK(int) trpmR3Save(PVM pVM, PSSMHANDLE pSSM);
436	static DECLCALLBACK(int) trpmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass);
437	static DECLCALLBACK(void) trpmR3InfoEvent(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs);
438
439
440	/**
441	* Initializes the Trap Manager
442	*
443	* @returns VBox status code.
444	* @param pVM The cross context VM structure.
445	*/
446	VMMR3DECL(int) TRPMR3Init(PVM pVM)
447	{
448	LogFlow(("TRPMR3Init\n"));
449	int rc;
450
451	/*
452	* Assert sizes and alignments.
453	*/
454	AssertRelease(!(RT_UOFFSETOF(VM, trpm.s) & 31));
455	AssertRelease(!(RT_UOFFSETOF(VM, trpm.s.aIdt) & 15));
456	AssertRelease(sizeof(pVM->trpm.s) <= sizeof(pVM->trpm.padding));
457	AssertRelease(RT_ELEMENTS(pVM->trpm.s.aGuestTrapHandler) == sizeof(pVM->trpm.s.au32IdtPatched)*8);
458
459	/*
460	* Initialize members.
461	*/
462	pVM->trpm.s.offVM = RT_UOFFSETOF(VM, trpm);
463	pVM->trpm.s.offTRPMCPU = RT_UOFFSETOF(VM, aCpus[0].trpm) - RT_UOFFSETOF(VM, trpm);
464
465	for (VMCPUID i = 0; i < pVM->cCpus; i++)
466	{
467	PVMCPU pVCpu = &pVM->aCpus[i];
468
469	pVCpu->trpm.s.offVM = RT_UOFFSETOF_DYN(VM, aCpus[i].trpm);
470	pVCpu->trpm.s.offVMCpu = RT_UOFFSETOF(VMCPU, trpm);
471	pVCpu->trpm.s.uActiveVector = ~0U;
472	}
473
474	pVM->trpm.s.GuestIdtr.pIdt = RTRCPTR_MAX;
475	pVM->trpm.s.pvMonShwIdtRC = RTRCPTR_MAX;
476	pVM->trpm.s.fSafeToDropGuestIDTMonitoring = false;
477
478	/*
479	* Read the configuration (if any).
480	*/
481	PCFGMNODE pTRPMNode = CFGMR3GetChild(CFGMR3GetRoot(pVM), "TRPM");
482	if (pTRPMNode)
483	{
484	bool f;
485	rc = CFGMR3QueryBool(pTRPMNode, "SafeToDropGuestIDTMonitoring", &f);
486	if (RT_SUCCESS(rc))
487	pVM->trpm.s.fSafeToDropGuestIDTMonitoring = f;
488	}
489
490	/* write config summary to log */
491	if (pVM->trpm.s.fSafeToDropGuestIDTMonitoring)
492	LogRel(("TRPM: Dropping Guest IDT Monitoring\n"));
493
494	/*
495	* Initialize the IDT.
496	* The handler addresses will be set in the TRPMR3Relocate() function.
497	*/
498	Assert(sizeof(pVM->trpm.s.aIdt) == sizeof(g_aIdt));
499	memcpy(&pVM->trpm.s.aIdt[0], &g_aIdt[0], sizeof(pVM->trpm.s.aIdt));
500
501	/*
502	* Register virtual access handlers.
503	*/
504	pVM->trpm.s.hShadowIdtWriteHandlerType = NIL_PGMVIRTHANDLERTYPE;
505	pVM->trpm.s.hGuestIdtWriteHandlerType = NIL_PGMVIRTHANDLERTYPE;
506	#ifdef VBOX_WITH_RAW_MODE
507	if (VM_IS_RAW_MODE_ENABLED(pVM))
508	{
509	# ifdef TRPM_TRACK_SHADOW_IDT_CHANGES
510	rc = PGMR3HandlerVirtualTypeRegister(pVM, PGMVIRTHANDLERKIND_HYPERVISOR, false /fRelocUserRC/,
511	NULL /pfnInvalidateR3/, NULL /pfnHandlerR3/,
512	NULL /pszHandlerRC/, "trpmRCShadowIDTWritePfHandler",
513	"Shadow IDT write access handler", &pVM->trpm.s.hShadowIdtWriteHandlerType);
514	AssertRCReturn(rc, rc);
515	# endif
516	rc = PGMR3HandlerVirtualTypeRegister(pVM, PGMVIRTHANDLERKIND_WRITE, false /fRelocUserRC/,
517	NULL /pfnInvalidateR3/, trpmGuestIDTWriteHandler,
518	"trpmGuestIDTWriteHandler", "trpmRCGuestIDTWritePfHandler",
519	"Guest IDT write access handler", &pVM->trpm.s.hGuestIdtWriteHandlerType);
520	AssertRCReturn(rc, rc);
521	}
522	#endif /* VBOX_WITH_RAW_MODE */
523
524	/*
525	* Register the saved state data unit.
526	*/
527	rc = SSMR3RegisterInternal(pVM, "trpm", 1, TRPM_SAVED_STATE_VERSION, sizeof(TRPM),
528	NULL, NULL, NULL,
529	NULL, trpmR3Save, NULL,
530	NULL, trpmR3Load, NULL);
531	if (RT_FAILURE(rc))
532	return rc;
533
534	/*
535	* Register info handlers.
536	*/
537	rc = DBGFR3InfoRegisterInternalEx(pVM, "trpmevent", "Dumps TRPM pending event.", trpmR3InfoEvent,
538	DBGFINFO_FLAGS_ALL_EMTS);
539	AssertRCReturn(rc, rc);
540
541	/*
542	* Statistics.
543	*/
544	#ifdef VBOX_WITH_RAW_MODE
545	if (VM_IS_RAW_MODE_ENABLED(pVM))
546	{
547	STAM_REG(pVM, &pVM->trpm.s.StatRCWriteGuestIDTFault, STAMTYPE_COUNTER, "/TRPM/RC/IDTWritesFault", STAMUNIT_OCCURENCES, "Guest IDT writes the we returned to R3 to handle.");
548	STAM_REG(pVM, &pVM->trpm.s.StatRCWriteGuestIDTHandled, STAMTYPE_COUNTER, "/TRPM/RC/IDTWritesHandled", STAMUNIT_OCCURENCES, "Guest IDT writes that we handled successfully.");
549	STAM_REG(pVM, &pVM->trpm.s.StatSyncIDT, STAMTYPE_PROFILE, "/PROF/TRPM/SyncIDT", STAMUNIT_TICKS_PER_CALL, "Profiling of TRPMR3SyncIDT().");
550
551	/* traps */
552	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x00], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/00", STAMUNIT_TICKS_PER_CALL, "#DE - Divide error.");
553	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x01], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/01", STAMUNIT_TICKS_PER_CALL, "#DB - Debug (single step and more).");
554	//STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x02], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/02", STAMUNIT_TICKS_PER_CALL, "NMI");
555	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x03], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/03", STAMUNIT_TICKS_PER_CALL, "#BP - Breakpoint.");
556	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x04], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/04", STAMUNIT_TICKS_PER_CALL, "#OF - Overflow.");
557	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x05], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/05", STAMUNIT_TICKS_PER_CALL, "#BR - Bound range exceeded.");
558	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x06], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/06", STAMUNIT_TICKS_PER_CALL, "#UD - Undefined opcode.");
559	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x07], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/07", STAMUNIT_TICKS_PER_CALL, "#NM - Device not available (FPU).");
560	//STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x08], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/08", STAMUNIT_TICKS_PER_CALL, "#DF - Double fault.");
561	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x09], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/09", STAMUNIT_TICKS_PER_CALL, "#?? - Coprocessor segment overrun (obsolete).");
562	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x0a], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/0a", STAMUNIT_TICKS_PER_CALL, "#TS - Task switch fault.");
563	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x0b], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/0b", STAMUNIT_TICKS_PER_CALL, "#NP - Segment not present.");
564	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x0c], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/0c", STAMUNIT_TICKS_PER_CALL, "#SS - Stack segment fault.");
565	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x0d], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/0d", STAMUNIT_TICKS_PER_CALL, "#GP - General protection fault.");
566	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x0e], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/0e", STAMUNIT_TICKS_PER_CALL, "#PF - Page fault.");
567	//STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x0f], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/0f", STAMUNIT_TICKS_PER_CALL, "Reserved.");
568	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x10], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/10", STAMUNIT_TICKS_PER_CALL, "#MF - Math fault..");
569	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x11], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/11", STAMUNIT_TICKS_PER_CALL, "#AC - Alignment check.");
570	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x12], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/12", STAMUNIT_TICKS_PER_CALL, "#MC - Machine check.");
571	STAM_REG(pVM, &pVM->trpm.s.aStatGCTraps[0x13], STAMTYPE_PROFILE_ADV, "/TRPM/GC/Traps/13", STAMUNIT_TICKS_PER_CALL, "#XF - SIMD Floating-Point Exception.");
572	}
573	#endif
574
575	# ifdef VBOX_WITH_STATISTICS
576	rc = MMHyperAlloc(pVM, sizeof(STAMCOUNTER) * 256, sizeof(STAMCOUNTER), MM_TAG_TRPM, (void **)&pVM->trpm.s.paStatForwardedIRQR3);
577	AssertRCReturn(rc, rc);
578	pVM->trpm.s.paStatForwardedIRQRC = MMHyperR3ToRC(pVM, pVM->trpm.s.paStatForwardedIRQR3);
579	for (unsigned i = 0; i < 256; i++)
580	STAMR3RegisterF(pVM, &pVM->trpm.s.paStatForwardedIRQR3[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES, "Forwarded interrupts.",
581	i < 0x20 ? "/TRPM/ForwardRaw/TRAP/%02X" : "/TRPM/ForwardRaw/IRQ/%02X", i);
582
583	# ifdef VBOX_WITH_RAW_MODE
584	if (VM_IS_RAW_MODE_ENABLED(pVM))
585	{
586	rc = MMHyperAlloc(pVM, sizeof(STAMCOUNTER) * 256, sizeof(STAMCOUNTER), MM_TAG_TRPM, (void **)&pVM->trpm.s.paStatHostIrqR3);
587	AssertRCReturn(rc, rc);
588	pVM->trpm.s.paStatHostIrqRC = MMHyperR3ToRC(pVM, pVM->trpm.s.paStatHostIrqR3);
589	for (unsigned i = 0; i < 256; i++)
590	STAMR3RegisterF(pVM, &pVM->trpm.s.paStatHostIrqR3[i], STAMTYPE_COUNTER, STAMVISIBILITY_USED, STAMUNIT_OCCURENCES,
591	"Host interrupts.", "/TRPM/HostIRQs/%02x", i);
592	}
593	# endif
594	# endif
595
596	#ifdef VBOX_WITH_RAW_MODE
597	if (VM_IS_RAW_MODE_ENABLED(pVM))
598	{
599	STAM_REG(pVM, &pVM->trpm.s.StatForwardProfR3, STAMTYPE_PROFILE_ADV, "/TRPM/ForwardRaw/ProfR3", STAMUNIT_TICKS_PER_CALL, "Profiling TRPMForwardTrap.");
600	STAM_REG(pVM, &pVM->trpm.s.StatForwardProfRZ, STAMTYPE_PROFILE_ADV, "/TRPM/ForwardRaw/ProfRZ", STAMUNIT_TICKS_PER_CALL, "Profiling TRPMForwardTrap.");
601	STAM_REG(pVM, &pVM->trpm.s.StatForwardFailNoHandler, STAMTYPE_COUNTER, "/TRPM/ForwardRaw/FailNoHandler", STAMUNIT_OCCURENCES,"Failure to forward interrupt in raw mode.");
602	STAM_REG(pVM, &pVM->trpm.s.StatForwardFailPatchAddr, STAMTYPE_COUNTER, "/TRPM/ForwardRaw/FailPatchAddr", STAMUNIT_OCCURENCES,"Failure to forward interrupt in raw mode.");
603	STAM_REG(pVM, &pVM->trpm.s.StatForwardFailR3, STAMTYPE_COUNTER, "/TRPM/ForwardRaw/FailR3", STAMUNIT_OCCURENCES, "Failure to forward interrupt in raw mode.");
604	STAM_REG(pVM, &pVM->trpm.s.StatForwardFailRZ, STAMTYPE_COUNTER, "/TRPM/ForwardRaw/FailRZ", STAMUNIT_OCCURENCES, "Failure to forward interrupt in raw mode.");
605
606	STAM_REG(pVM, &pVM->trpm.s.StatTrap0dDisasm, STAMTYPE_PROFILE, "/TRPM/RC/Traps/0d/Disasm", STAMUNIT_TICKS_PER_CALL, "Profiling disassembly part of trpmGCTrap0dHandler.");
607	STAM_REG(pVM, &pVM->trpm.s.StatTrap0dRdTsc, STAMTYPE_COUNTER, "/TRPM/RC/Traps/0d/RdTsc", STAMUNIT_OCCURENCES, "Number of RDTSC #GPs.");
608	}
609	#endif
610
611	#ifdef VBOX_WITH_RAW_MODE
612	/*
613	* Default action when entering raw mode for the first time
614	*/
615	if (VM_IS_RAW_MODE_ENABLED(pVM))
616	{
617	PVMCPU pVCpu = &pVM->aCpus[0]; /* raw mode implies on VCPU */
618	VMCPU_FF_SET(pVCpu, VMCPU_FF_TRPM_SYNC_IDT);
619	}
620	#endif
621	return 0;
622	}
623
624
625	/**
626	* Applies relocations to data and code managed by this component.
627	*
628	* This function will be called at init and whenever the VMM need
629	* to relocate itself inside the GC.
630	*
631	* @param pVM The cross context VM structure.
632	* @param offDelta Relocation delta relative to old location.
633	*/
634	VMMR3DECL(void) TRPMR3Relocate(PVM pVM, RTGCINTPTR offDelta)
635	{
636	#ifdef VBOX_WITH_RAW_MODE
637	if (!VM_IS_RAW_MODE_ENABLED(pVM))
638	return;
639
640	/* Only applies to raw mode which supports only 1 VCPU. */
641	PVMCPU pVCpu = &pVM->aCpus[0];
642	LogFlow(("TRPMR3Relocate\n"));
643
644	/*
645	* Get the trap handler addresses.
646	*
647	* If VMMRC.rc is screwed, so are we. We'll assert here since it elsewise
648	* would make init order impossible if we should assert the presence of these
649	* exports in TRPMR3Init().
650	*/
651	RTRCPTR aRCPtrs[TRPM_HANDLER_MAX];
652	RT_ZERO(aRCPtrs);
653	int rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "TRPMGCHandlerInterupt", &aRCPtrs[TRPM_HANDLER_INT]);
654	AssertReleaseMsgRC(rc, ("Couldn't find TRPMGCHandlerInterupt in VMMRC.rc!\n"));
655
656	rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "TRPMGCHandlerGeneric", &aRCPtrs[TRPM_HANDLER_TRAP]);
657	AssertReleaseMsgRC(rc, ("Couldn't find TRPMGCHandlerGeneric in VMMRC.rc!\n"));
658
659	rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "TRPMGCHandlerTrap08", &aRCPtrs[TRPM_HANDLER_TRAP_08]);
660	AssertReleaseMsgRC(rc, ("Couldn't find TRPMGCHandlerTrap08 in VMMRC.rc!\n"));
661
662	rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "TRPMGCHandlerTrap12", &aRCPtrs[TRPM_HANDLER_TRAP_12]);
663	AssertReleaseMsgRC(rc, ("Couldn't find TRPMGCHandlerTrap12 in VMMRC.rc!\n"));
664
665	RTSEL SelCS = CPUMGetHyperCS(pVCpu);
666
667	/*
668	* Iterate the idt and set the addresses.
669	*/
670	PVBOXIDTE pIdte = &pVM->trpm.s.aIdt[0];
671	PVBOXIDTE_GENERIC pIdteTemplate = &g_aIdt[0];
672	for (unsigned i = 0; i < RT_ELEMENTS(pVM->trpm.s.aIdt); i++, pIdte++, pIdteTemplate++)
673	{
674	if ( pIdte->Gen.u1Present
675	&& !ASMBitTest(&pVM->trpm.s.au32IdtPatched[0], i)
676	)
677	{
678	Assert(pIdteTemplate->u16OffsetLow < TRPM_HANDLER_MAX);
679	RTGCPTR Offset = aRCPtrs[pIdteTemplate->u16OffsetLow];
680	switch (pIdteTemplate->u16OffsetLow)
681	{
682	/*
683	* Generic handlers have different entrypoints for each possible
684	* vector number. These entrypoints makes a sort of an array with
685	* 8 byte entries where the vector number is the index.
686	* See TRPMGCHandlersA.asm for details.
687	*/
688	case TRPM_HANDLER_INT:
689	case TRPM_HANDLER_TRAP:
690	Offset += i * 8;
691	break;
692	case TRPM_HANDLER_TRAP_12:
693	break;
694	case TRPM_HANDLER_TRAP_08:
695	/* Handle #DF Task Gate in special way. */
696	pIdte->Gen.u16SegSel = SELMGetTrap8Selector(pVM);
697	pIdte->Gen.u16OffsetLow = 0;
698	pIdte->Gen.u16OffsetHigh = 0;
699	SELMSetTrap8EIP(pVM, Offset);
700	continue;
701	}
702	/* (non-task gates only ) */
703	pIdte->Gen.u16OffsetLow = Offset & 0xffff;
704	pIdte->Gen.u16OffsetHigh = Offset >> 16;
705	pIdte->Gen.u16SegSel = SelCS;
706	}
707	}
708
709	/*
710	* Update IDTR (limit is including!).
711	*/
712	CPUMSetHyperIDTR(pVCpu, VM_RC_ADDR(pVM, &pVM->trpm.s.aIdt[0]), sizeof(pVM->trpm.s.aIdt)-1);
713
714	# ifdef TRPM_TRACK_SHADOW_IDT_CHANGES
715	if (pVM->trpm.s.pvMonShwIdtRC != RTRCPTR_MAX)
716	{
717	rc = PGMHandlerVirtualDeregister(pVM, pVCpu, pVM->trpm.s.pvMonShwIdtRC, true /fHypervisor/);
718	AssertRC(rc);
719	}
720	pVM->trpm.s.pvMonShwIdtRC = VM_RC_ADDR(pVM, &pVM->trpm.s.aIdt[0]);
721	rc = PGMR3HandlerVirtualRegister(pVM, pVCpu, pVM->trpm.s.hShadowIdtWriteHandlerType,
722	pVM->trpm.s.pvMonShwIdtRC, pVM->trpm.s.pvMonShwIdtRC + sizeof(pVM->trpm.s.aIdt) - 1,
723	NULL /pvUserR3/, NIL_RTR0PTR /pvUserRC/, NULL /pszDesc/);
724	AssertRC(rc);
725	# endif
726
727	/* Relocate IDT handlers for forwarding guest traps/interrupts. */
728	for (uint32_t iTrap = 0; iTrap < RT_ELEMENTS(pVM->trpm.s.aGuestTrapHandler); iTrap++)
729	{
730	if (pVM->trpm.s.aGuestTrapHandler[iTrap] != TRPM_INVALID_HANDLER)
731	{
732	Log(("TRPMR3Relocate: iGate=%2X Handler %RRv -> %RRv\n", iTrap, pVM->trpm.s.aGuestTrapHandler[iTrap], pVM->trpm.s.aGuestTrapHandler[iTrap] + offDelta));
733	pVM->trpm.s.aGuestTrapHandler[iTrap] += offDelta;
734	}
735
736	if (ASMBitTest(&pVM->trpm.s.au32IdtPatched[0], iTrap))
737	{
738	PVBOXIDTE pIdteCur = &pVM->trpm.s.aIdt[iTrap];
739	RTGCPTR pHandler = VBOXIDTE_OFFSET(*pIdteCur);
740
741	Log(("TRPMR3Relocate: *iGate=%2X Handler %RGv -> %RGv\n", iTrap, pHandler, pHandler + offDelta));
742	pHandler += offDelta;
743
744	pIdteCur->Gen.u16OffsetHigh = pHandler >> 16;
745	pIdteCur->Gen.u16OffsetLow = pHandler & 0xFFFF;
746	}
747	}
748
749	# ifdef VBOX_WITH_STATISTICS
750	pVM->trpm.s.paStatForwardedIRQRC += offDelta;
751	pVM->trpm.s.paStatHostIrqRC += offDelta;
752	# endif
753
754	#else /* !VBOX_WITH_RAW_MODE */
755	RT_NOREF(pVM, offDelta);
756	#endif /* !VBOX_WITH_RAW_MODE */
757	}
758
759
760	/**
761	* Terminates the Trap Manager
762	*
763	* @returns VBox status code.
764	* @param pVM The cross context VM structure.
765	*/
766	VMMR3DECL(int) TRPMR3Term(PVM pVM)
767	{
768	NOREF(pVM);
769	return VINF_SUCCESS;
770	}
771
772
773	/**
774	* Resets a virtual CPU.
775	*
776	* Used by TRPMR3Reset and CPU hot plugging.
777	*
778	* @param pVCpu The cross context virtual CPU structure.
779	*/
780	VMMR3DECL(void) TRPMR3ResetCpu(PVMCPU pVCpu)
781	{
782	pVCpu->trpm.s.uActiveVector = ~0U;
783	}
784
785
786	/**
787	* The VM is being reset.
788	*
789	* For the TRPM component this means that any IDT write monitors
790	* needs to be removed, any pending trap cleared, and the IDT reset.
791	*
792	* @param pVM The cross context VM structure.
793	*/
794	VMMR3DECL(void) TRPMR3Reset(PVM pVM)
795	{
796	/*
797	* Deregister any virtual handlers.
798	*/
799	#ifdef TRPM_TRACK_GUEST_IDT_CHANGES
800	if (pVM->trpm.s.GuestIdtr.pIdt != RTRCPTR_MAX)
801	{
802	if (!pVM->trpm.s.fSafeToDropGuestIDTMonitoring)
803	{
804	int rc = PGMHandlerVirtualDeregister(pVM, VMMGetCpu(pVM), pVM->trpm.s.GuestIdtr.pIdt, false /fHypervisor/);
805	AssertRC(rc);
806	}
807	pVM->trpm.s.GuestIdtr.pIdt = RTRCPTR_MAX;
808	}
809	pVM->trpm.s.GuestIdtr.cbIdt = 0;
810	#endif
811
812	/*
813	* Reinitialize other members calling the relocator to get things right.
814	*/
815	for (VMCPUID i = 0; i < pVM->cCpus; i++)
816	TRPMR3ResetCpu(&pVM->aCpus[i]);
817	memcpy(&pVM->trpm.s.aIdt[0], &g_aIdt[0], sizeof(pVM->trpm.s.aIdt));
818	memset(pVM->trpm.s.aGuestTrapHandler, 0, sizeof(pVM->trpm.s.aGuestTrapHandler));
819	TRPMR3Relocate(pVM, 0);
820
821	#ifdef VBOX_WITH_RAW_MODE
822	/*
823	* Default action when entering raw mode for the first time
824	*/
825	if (VM_IS_RAW_MODE_ENABLED(pVM))
826	{
827	PVMCPU pVCpu = &pVM->aCpus[0]; /* raw mode implies on VCPU */
828	VMCPU_FF_SET(pVCpu, VMCPU_FF_TRPM_SYNC_IDT);
829	}
830	#endif
831	}
832
833
834	# ifdef VBOX_WITH_RAW_MODE
835	/**
836	* Resolve a builtin RC symbol.
837	*
838	* Called by PDM when loading or relocating RC modules.
839	*
840	* @returns VBox status
841	* @param pVM The cross context VM structure.
842	* @param pszSymbol Symbol to resolv
843	* @param pRCPtrValue Where to store the symbol value.
844	*
845	* @remark This has to work before VMMR3Relocate() is called.
846	*/
847	VMMR3_INT_DECL(int) TRPMR3GetImportRC(PVM pVM, const char *pszSymbol, PRTRCPTR pRCPtrValue)
848	{
849	if (!strcmp(pszSymbol, "g_TRPM"))
850	*pRCPtrValue = VM_RC_ADDR(pVM, &pVM->trpm);
851	else if (!strcmp(pszSymbol, "g_TRPMCPU"))
852	*pRCPtrValue = VM_RC_ADDR(pVM, &pVM->aCpus[0].trpm);
853	else if (!strcmp(pszSymbol, "g_trpmGuestCtx"))
854	{
855	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(VMMGetCpuById(pVM, 0));
856	*pRCPtrValue = VM_RC_ADDR(pVM, pCtx);
857	}
858	else if (!strcmp(pszSymbol, "g_trpmHyperCtx"))
859	{
860	PCPUMCTX pCtx = CPUMGetHyperCtxPtr(VMMGetCpuById(pVM, 0));
861	*pRCPtrValue = VM_RC_ADDR(pVM, pCtx);
862	}
863	else if (!strcmp(pszSymbol, "g_trpmGuestCtxCore"))
864	{
865	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(VMMGetCpuById(pVM, 0));
866	*pRCPtrValue = VM_RC_ADDR(pVM, CPUMCTX2CORE(pCtx));
867	}
868	else if (!strcmp(pszSymbol, "g_trpmHyperCtxCore"))
869	{
870	PCPUMCTX pCtx = CPUMGetHyperCtxPtr(VMMGetCpuById(pVM, 0));
871	*pRCPtrValue = VM_RC_ADDR(pVM, CPUMCTX2CORE(pCtx));
872	}
873	else
874	return VERR_SYMBOL_NOT_FOUND;
875	return VINF_SUCCESS;
876	}
877	#endif /* VBOX_WITH_RAW_MODE */
878
879
880	/**
881	* Execute state save operation.
882	*
883	* @returns VBox status code.
884	* @param pVM The cross context VM structure.
885	* @param pSSM SSM operation handle.
886	*/
887	static DECLCALLBACK(int) trpmR3Save(PVM pVM, PSSMHANDLE pSSM)
888	{
889	PTRPM pTrpm = &pVM->trpm.s;
890	LogFlow(("trpmR3Save:\n"));
891
892	/*
893	* Active and saved traps.
894	*/
895	for (VMCPUID i = 0; i < pVM->cCpus; i++)
896	{
897	PTRPMCPU pTrpmCpu = &pVM->aCpus[i].trpm.s;
898	SSMR3PutUInt(pSSM, pTrpmCpu->uActiveVector);
899	SSMR3PutUInt(pSSM, pTrpmCpu->enmActiveType);
900	SSMR3PutGCUInt(pSSM, pTrpmCpu->uActiveErrorCode);
901	SSMR3PutGCUIntPtr(pSSM, pTrpmCpu->uActiveCR2);
902	SSMR3PutGCUInt(pSSM, pTrpmCpu->uSavedVector);
903	SSMR3PutUInt(pSSM, pTrpmCpu->enmSavedType);
904	SSMR3PutGCUInt(pSSM, pTrpmCpu->uSavedErrorCode);
905	SSMR3PutGCUIntPtr(pSSM, pTrpmCpu->uSavedCR2);
906	SSMR3PutGCUInt(pSSM, pTrpmCpu->uPrevVector);
907	}
908	SSMR3PutBool(pSSM, !VM_IS_RAW_MODE_ENABLED(pVM));
909	PVMCPU pVCpu0 = &pVM->aCpus[0]; NOREF(pVCpu0); /* raw mode implies 1 VCPU */
910	SSMR3PutUInt(pSSM, VM_WHEN_RAW_MODE(VMCPU_FF_IS_SET(pVCpu0, VMCPU_FF_TRPM_SYNC_IDT), 0));
911	SSMR3PutMem(pSSM, &pTrpm->au32IdtPatched[0], sizeof(pTrpm->au32IdtPatched));
912	SSMR3PutU32(pSSM, UINT32_MAX); /* separator. */
913
914	/*
915	* Save any trampoline gates.
916	*/
917	for (uint32_t iTrap = 0; iTrap < RT_ELEMENTS(pTrpm->aGuestTrapHandler); iTrap++)
918	{
919	if (pTrpm->aGuestTrapHandler[iTrap])
920	{
921	SSMR3PutU32(pSSM, iTrap);
922	SSMR3PutGCPtr(pSSM, pTrpm->aGuestTrapHandler[iTrap]);
923	SSMR3PutMem(pSSM, &pTrpm->aIdt[iTrap], sizeof(pTrpm->aIdt[iTrap]));
924	}
925	}
926
927	return SSMR3PutU32(pSSM, UINT32_MAX); /* terminator */
928	}
929
930
931	/**
932	* Execute state load operation.
933	*
934	* @returns VBox status code.
935	* @param pVM The cross context VM structure.
936	* @param pSSM SSM operation handle.
937	* @param uVersion Data layout version.
938	* @param uPass The data pass.
939	*/
940	static DECLCALLBACK(int) trpmR3Load(PVM pVM, PSSMHANDLE pSSM, uint32_t uVersion, uint32_t uPass)
941	{
942	LogFlow(("trpmR3Load:\n"));
943	Assert(uPass == SSM_PASS_FINAL); NOREF(uPass);
944
945	/*
946	* Validate version.
947	*/
948	if ( uVersion != TRPM_SAVED_STATE_VERSION
949	&& uVersion != TRPM_SAVED_STATE_VERSION_UNI)
950	{
951	AssertMsgFailed(("trpmR3Load: Invalid version uVersion=%d!\n", uVersion));
952	return VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION;
953	}
954
955	/*
956	* Call the reset function to kick out any handled gates and other potential trouble.
957	*/
958	TRPMR3Reset(pVM);
959
960	/*
961	* Active and saved traps.
962	*/
963	PTRPM pTrpm = &pVM->trpm.s;
964
965	if (uVersion == TRPM_SAVED_STATE_VERSION)
966	{
967	for (VMCPUID i = 0; i < pVM->cCpus; i++)
968	{
969	PTRPMCPU pTrpmCpu = &pVM->aCpus[i].trpm.s;
970	SSMR3GetUInt(pSSM, &pTrpmCpu->uActiveVector);
971	SSMR3GetUInt(pSSM, (uint32_t *)&pTrpmCpu->enmActiveType);
972	SSMR3GetGCUInt(pSSM, &pTrpmCpu->uActiveErrorCode);
973	SSMR3GetGCUIntPtr(pSSM, &pTrpmCpu->uActiveCR2);
974	SSMR3GetGCUInt(pSSM, &pTrpmCpu->uSavedVector);
975	SSMR3GetUInt(pSSM, (uint32_t *)&pTrpmCpu->enmSavedType);
976	SSMR3GetGCUInt(pSSM, &pTrpmCpu->uSavedErrorCode);
977	SSMR3GetGCUIntPtr(pSSM, &pTrpmCpu->uSavedCR2);
978	SSMR3GetGCUInt(pSSM, &pTrpmCpu->uPrevVector);
979	}
980
981	bool fIgnored;
982	SSMR3GetBool(pSSM, &fIgnored);
983	}
984	else
985	{
986	PTRPMCPU pTrpmCpu = &pVM->aCpus[0].trpm.s;
987	SSMR3GetUInt(pSSM, &pTrpmCpu->uActiveVector);
988	SSMR3GetUInt(pSSM, (uint32_t *)&pTrpmCpu->enmActiveType);
989	SSMR3GetGCUInt(pSSM, &pTrpmCpu->uActiveErrorCode);
990	SSMR3GetGCUIntPtr(pSSM, &pTrpmCpu->uActiveCR2);
991	SSMR3GetGCUInt(pSSM, &pTrpmCpu->uSavedVector);
992	SSMR3GetUInt(pSSM, (uint32_t *)&pTrpmCpu->enmSavedType);
993	SSMR3GetGCUInt(pSSM, &pTrpmCpu->uSavedErrorCode);
994	SSMR3GetGCUIntPtr(pSSM, &pTrpmCpu->uSavedCR2);
995	SSMR3GetGCUInt(pSSM, &pTrpmCpu->uPrevVector);
996
997	RTGCUINT fIgnored;
998	SSMR3GetGCUInt(pSSM, &fIgnored);
999	}
1000
1001	RTUINT fSyncIDT;
1002	int rc = SSMR3GetUInt(pSSM, &fSyncIDT);
1003	if (RT_FAILURE(rc))
1004	return rc;
1005	if (fSyncIDT & ~1)
1006	{
1007	AssertMsgFailed(("fSyncIDT=%#x\n", fSyncIDT));
1008	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
1009	}
1010	#ifdef VBOX_WITH_RAW_MODE
1011	if (fSyncIDT)
1012	{
1013	PVMCPU pVCpu = &pVM->aCpus[0]; /* raw mode implies 1 VCPU */
1014	VMCPU_FF_SET(pVCpu, VMCPU_FF_TRPM_SYNC_IDT);
1015	}
1016	/* else: cleared by reset call above. */
1017	#endif
1018
1019	SSMR3GetMem(pSSM, &pTrpm->au32IdtPatched[0], sizeof(pTrpm->au32IdtPatched));
1020
1021	/* check the separator */
1022	uint32_t u32Sep;
1023	rc = SSMR3GetU32(pSSM, &u32Sep);
1024	if (RT_FAILURE(rc))
1025	return rc;
1026	if (u32Sep != (uint32_t)~0)
1027	{
1028	AssertMsgFailed(("u32Sep=%#x (first)\n", u32Sep));
1029	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
1030	}
1031
1032	/*
1033	* Restore any trampoline gates.
1034	*/
1035	for (;;)
1036	{
1037	/* gate number / terminator */
1038	uint32_t iTrap;
1039	rc = SSMR3GetU32(pSSM, &iTrap);
1040	if (RT_FAILURE(rc))
1041	return rc;
1042	if (iTrap == (uint32_t)~0)
1043	break;
1044	if ( iTrap >= RT_ELEMENTS(pTrpm->aIdt)
1045	\|\| pTrpm->aGuestTrapHandler[iTrap])
1046	{
1047	AssertMsgFailed(("iTrap=%#x\n", iTrap));
1048	return VERR_SSM_DATA_UNIT_FORMAT_CHANGED;
1049	}
1050
1051	/* restore the IDT entry. */
1052	RTGCPTR GCPtrHandler;
1053	SSMR3GetGCPtr(pSSM, &GCPtrHandler);
1054	VBOXIDTE Idte;
1055	rc = SSMR3GetMem(pSSM, &Idte, sizeof(Idte));
1056	if (RT_FAILURE(rc))
1057	return rc;
1058	Assert(GCPtrHandler);
1059	pTrpm->aIdt[iTrap] = Idte;
1060	}
1061
1062	return VINF_SUCCESS;
1063	}
1064
1065	#ifdef VBOX_WITH_RAW_MODE
1066
1067	/**
1068	* Check if gate handlers were updated
1069	* (callback for the VMCPU_FF_TRPM_SYNC_IDT forced action).
1070	*
1071	* @returns VBox status code.
1072	* @param pVM The cross context VM structure.
1073	* @param pVCpu The cross context virtual CPU structure.
1074	*/
1075	VMMR3DECL(int) TRPMR3SyncIDT(PVM pVM, PVMCPU pVCpu)
1076	{
1077	STAM_PROFILE_START(&pVM->trpm.s.StatSyncIDT, a);
1078	const bool fRawRing0 = EMIsRawRing0Enabled(pVM);
1079	int rc;
1080
1081	AssertReturn(VM_IS_RAW_MODE_ENABLED(pVM), VERR_TRPM_HM_IPE);
1082
1083	if (fRawRing0 && CSAMIsEnabled(pVM))
1084	{
1085	/* Clear all handlers */
1086	Log(("TRPMR3SyncIDT: Clear all trap handlers.\n"));
1087	/** @todo inefficient, but simple */
1088	for (unsigned iGate = 0; iGate < 256; iGate++)
1089	trpmClearGuestTrapHandler(pVM, iGate);
1090
1091	/* Scan them all (only the first time) */
1092	CSAMR3CheckGates(pVM, 0, 256);
1093	}
1094
1095	/*
1096	* Get the IDTR.
1097	*/
1098	VBOXIDTR IDTR;
1099	IDTR.pIdt = CPUMGetGuestIDTR(pVCpu, &IDTR.cbIdt);
1100	if (!IDTR.cbIdt)
1101	{
1102	Log(("No IDT entries...\n"));
1103	return DBGFSTOP(pVM);
1104	}
1105
1106	# ifdef TRPM_TRACK_GUEST_IDT_CHANGES
1107	/*
1108	* Check if Guest's IDTR has changed.
1109	*/
1110	if ( IDTR.pIdt != pVM->trpm.s.GuestIdtr.pIdt
1111	\|\| IDTR.cbIdt != pVM->trpm.s.GuestIdtr.cbIdt)
1112	{
1113	Log(("TRPMR3UpdateFromCPUM: Guest's IDT is changed to pIdt=%08X cbIdt=%08X\n", IDTR.pIdt, IDTR.cbIdt));
1114	if (!pVM->trpm.s.fSafeToDropGuestIDTMonitoring)
1115	{
1116	/*
1117	* [Re]Register write virtual handler for guest's IDT.
1118	*/
1119	if (pVM->trpm.s.GuestIdtr.pIdt != RTRCPTR_MAX)
1120	{
1121	rc = PGMHandlerVirtualDeregister(pVM, pVCpu, pVM->trpm.s.GuestIdtr.pIdt, false /fHypervisor/);
1122	AssertRCReturn(rc, rc);
1123	}
1124	/* limit is including */
1125	rc = PGMR3HandlerVirtualRegister(pVM, pVCpu, pVM->trpm.s.hGuestIdtWriteHandlerType,
1126	IDTR.pIdt, IDTR.pIdt + IDTR.cbIdt /* already inclusive */,
1127	NULL /pvUserR3/, NIL_RTR0PTR /pvUserRC/, NULL /pszDesc/);
1128
1129	if (rc == VERR_PGM_HANDLER_VIRTUAL_CONFLICT)
1130	{
1131	/* Could be a conflict with CSAM */
1132	CSAMR3RemovePage(pVM, IDTR.pIdt);
1133	if (PAGE_ADDRESS(IDTR.pIdt) != PAGE_ADDRESS(IDTR.pIdt + IDTR.cbIdt))
1134	CSAMR3RemovePage(pVM, IDTR.pIdt + IDTR.cbIdt);
1135
1136	rc = PGMR3HandlerVirtualRegister(pVM, pVCpu, pVM->trpm.s.hGuestIdtWriteHandlerType,
1137	IDTR.pIdt, IDTR.pIdt + IDTR.cbIdt /* already inclusive */,
1138	NULL /pvUserR3/, NIL_RTR0PTR /pvUserRC/, NULL /pszDesc/);
1139	}
1140
1141	AssertRCReturn(rc, rc);
1142	}
1143
1144	/* Update saved Guest IDTR. */
1145	pVM->trpm.s.GuestIdtr = IDTR;
1146	}
1147	# endif
1148
1149	/*
1150	* Sync the interrupt gate.
1151	* Should probably check/sync the others too, but for now we'll handle that in #GP.
1152	*/
1153	X86DESC Idte3;
1154	rc = PGMPhysSimpleReadGCPtr(pVCpu, &Idte3, IDTR.pIdt + sizeof(Idte3) * 3, sizeof(Idte3));
1155	if (RT_FAILURE(rc))
1156	{
1157	AssertMsgRC(rc, ("Failed to read IDT[3]! rc=%Rrc\n", rc));
1158	return DBGFSTOP(pVM);
1159	}
1160	AssertRCReturn(rc, rc);
1161	if (fRawRing0)
1162	pVM->trpm.s.aIdt[3].Gen.u2DPL = RT_MAX(Idte3.Gen.u2Dpl, 1);
1163	else
1164	pVM->trpm.s.aIdt[3].Gen.u2DPL = Idte3.Gen.u2Dpl;
1165
1166	/*
1167	* Clear the FF and we're done.
1168	*/
1169	VMCPU_FF_CLEAR(pVCpu, VMCPU_FF_TRPM_SYNC_IDT);
1170	STAM_PROFILE_STOP(&pVM->trpm.s.StatSyncIDT, a);
1171	return VINF_SUCCESS;
1172	}
1173
1174
1175	/**
1176	* Clear passthrough interrupt gate handler (reset to default handler)
1177	*
1178	* @returns VBox status code.
1179	* @param pVM The cross context VM structure.
1180	* @param iTrap Trap/interrupt gate number.
1181	*/
1182	int trpmR3ClearPassThroughHandler(PVM pVM, unsigned iTrap)
1183	{
1184	/* Only applies to raw mode which supports only 1 VCPU. */
1185	PVMCPU pVCpu = &pVM->aCpus[0];
1186	Assert(VM_IS_RAW_MODE_ENABLED(pVM));
1187
1188	/** @todo cleanup trpmR3ClearPassThroughHandler()! */
1189	RTRCPTR aGCPtrs[TRPM_HANDLER_MAX];
1190	int rc;
1191
1192	memset(aGCPtrs, 0, sizeof(aGCPtrs));
1193
1194	rc = PDMR3LdrGetSymbolRC(pVM, VMMRC_MAIN_MODULE_NAME, "TRPMGCHandlerInterupt", &aGCPtrs[TRPM_HANDLER_INT]);
1195	AssertReleaseMsgRC(rc, ("Couldn't find TRPMGCHandlerInterupt in VMMRC.rc!\n"));
1196
1197	if ( iTrap < TRPM_HANDLER_INT_BASE
1198	\|\| iTrap >= RT_ELEMENTS(pVM->trpm.s.aIdt))
1199	{
1200	AssertMsg(iTrap < TRPM_HANDLER_INT_BASE, ("Illegal gate number %#x!\n", iTrap));
1201	return VERR_INVALID_PARAMETER;
1202	}
1203	memcpy(&pVM->trpm.s.aIdt[iTrap], &g_aIdt[iTrap], sizeof(pVM->trpm.s.aIdt[0]));
1204
1205	/* Unmark it for relocation purposes. */
1206	ASMBitClear(&pVM->trpm.s.au32IdtPatched[0], iTrap);
1207
1208	RTSEL SelCS = CPUMGetHyperCS(pVCpu);
1209	PVBOXIDTE pIdte = &pVM->trpm.s.aIdt[iTrap];
1210	PVBOXIDTE_GENERIC pIdteTemplate = &g_aIdt[iTrap];
1211	if (pIdte->Gen.u1Present)
1212	{
1213	Assert(pIdteTemplate->u16OffsetLow == TRPM_HANDLER_INT);
1214	Assert(sizeof(RTRCPTR) == sizeof(aGCPtrs[0]));
1215	RTRCPTR Offset = (RTRCPTR)aGCPtrs[pIdteTemplate->u16OffsetLow];
1216
1217	/*
1218	* Generic handlers have different entrypoints for each possible
1219	* vector number. These entrypoints make a sort of an array with
1220	* 8 byte entries where the vector number is the index.
1221	* See TRPMGCHandlersA.asm for details.
1222	*/
1223	Offset += iTrap * 8;
1224
1225	if (pIdte->Gen.u5Type2 != VBOX_IDTE_TYPE2_TASK)
1226	{
1227	pIdte->Gen.u16OffsetLow = Offset & 0xffff;
1228	pIdte->Gen.u16OffsetHigh = Offset >> 16;
1229	pIdte->Gen.u16SegSel = SelCS;
1230	}
1231	}
1232
1233	return VINF_SUCCESS;
1234	}
1235
1236
1237	/**
1238	* Check if address is a gate handler (interrupt or trap).
1239	*
1240	* @returns gate nr or UINT32_MAX is not found
1241	*
1242	* @param pVM The cross context VM structure.
1243	* @param GCPtr GC address to check.
1244	*/
1245	VMMR3DECL(uint32_t) TRPMR3QueryGateByHandler(PVM pVM, RTRCPTR GCPtr)
1246	{
1247	AssertReturn(VM_IS_RAW_MODE_ENABLED(pVM), ~0U);
1248
1249	for (uint32_t iTrap = 0; iTrap < RT_ELEMENTS(pVM->trpm.s.aGuestTrapHandler); iTrap++)
1250	{
1251	if (pVM->trpm.s.aGuestTrapHandler[iTrap] == GCPtr)
1252	return iTrap;
1253
1254	/* redundant */
1255	if (ASMBitTest(&pVM->trpm.s.au32IdtPatched[0], iTrap))
1256	{
1257	PVBOXIDTE pIdte = &pVM->trpm.s.aIdt[iTrap];
1258	RTGCPTR pHandler = VBOXIDTE_OFFSET(*pIdte);
1259
1260	if (pHandler == GCPtr)
1261	return iTrap;
1262	}
1263	}
1264	return UINT32_MAX;
1265	}
1266
1267
1268	/**
1269	* Get guest trap/interrupt gate handler
1270	*
1271	* @returns Guest trap handler address or TRPM_INVALID_HANDLER if none installed
1272	* @param pVM The cross context VM structure.
1273	* @param iTrap Interrupt/trap number.
1274	*/
1275	VMMR3DECL(RTRCPTR) TRPMR3GetGuestTrapHandler(PVM pVM, unsigned iTrap)
1276	{
1277	AssertReturn(iTrap < RT_ELEMENTS(pVM->trpm.s.aIdt), TRPM_INVALID_HANDLER);
1278	AssertReturn(VM_IS_RAW_MODE_ENABLED(pVM), TRPM_INVALID_HANDLER);
1279
1280	return pVM->trpm.s.aGuestTrapHandler[iTrap];
1281	}
1282
1283
1284	/**
1285	* Set guest trap/interrupt gate handler
1286	* Used for setting up trap gates used for kernel calls.
1287	*
1288	* @returns VBox status code.
1289	* @param pVM The cross context VM structure.
1290	* @param iTrap Interrupt/trap number.
1291	* @param pHandler GC handler pointer
1292	*/
1293	VMMR3DECL(int) TRPMR3SetGuestTrapHandler(PVM pVM, unsigned iTrap, RTRCPTR pHandler)
1294	{
1295	/* Only valid in raw mode which implies 1 VCPU */
1296	Assert(PATMIsEnabled(pVM) && pVM->cCpus == 1);
1297	AssertReturn(VM_IS_RAW_MODE_ENABLED(pVM), VERR_TRPM_HM_IPE);
1298	PVMCPU pVCpu = &pVM->aCpus[0];
1299
1300	/*
1301	* Validate.
1302	*/
1303	if (iTrap >= RT_ELEMENTS(pVM->trpm.s.aIdt))
1304	{
1305	AssertMsg(iTrap < TRPM_HANDLER_INT_BASE, ("Illegal gate number %d!\n", iTrap));
1306	return VERR_INVALID_PARAMETER;
1307	}
1308
1309	AssertReturn(pHandler == TRPM_INVALID_HANDLER \|\| PATMIsPatchGCAddr(pVM, pHandler), VERR_INVALID_PARAMETER);
1310
1311	uint16_t cbIDT;
1312	RTGCPTR GCPtrIDT = CPUMGetGuestIDTR(pVCpu, &cbIDT);
1313	if (iTrap * sizeof(VBOXIDTE) >= cbIDT)
1314	return VERR_INVALID_PARAMETER; /* Silently ignore out of range requests. */
1315
1316	if (pHandler == TRPM_INVALID_HANDLER)
1317	{
1318	/* clear trap handler */
1319	Log(("TRPMR3SetGuestTrapHandler: clear handler %x\n", iTrap));
1320	return trpmClearGuestTrapHandler(pVM, iTrap);
1321	}
1322
1323	/*
1324	* Read the guest IDT entry.
1325	*/
1326	VBOXIDTE GuestIdte;
1327	int rc = PGMPhysSimpleReadGCPtr(pVCpu, &GuestIdte, GCPtrIDT + iTrap * sizeof(GuestIdte), sizeof(GuestIdte));
1328	if (RT_FAILURE(rc))
1329	{
1330	AssertMsgRC(rc, ("Failed to read IDTE! rc=%Rrc\n", rc));
1331	return rc;
1332	}
1333
1334	if ( EMIsRawRing0Enabled(pVM)
1335	&& !EMIsRawRing1Enabled(pVM)) /* can't deal with the ambiguity of ring 1 & 2 in the patch code. */
1336	{
1337	/*
1338	* Only replace handlers for which we are 100% certain there won't be
1339	* any host interrupts.
1340	*
1341	* 0x2E is safe on Windows because it's the system service interrupt gate. Not
1342	* quite certain if this is safe or not on 64-bit Vista, it probably is.
1343	*
1344	* 0x80 is safe on Linux because it's the syscall vector and is part of the
1345	* 32-bit usermode ABI. 64-bit Linux (usually) supports 32-bit processes
1346	* and will therefor never assign hardware interrupts to 0x80.
1347	*
1348	* Exactly why 0x80 is safe on 32-bit Windows is a bit hazy, but it seems
1349	* to work ok... However on 64-bit Vista (SMP?) is doesn't work reliably.
1350	* Booting Linux/BSD guest will cause system lockups on most of the computers.
1351	* -> Update: It seems gate 0x80 is not safe on 32-bits Windows either. See
1352	* @bugref{3604}.
1353	*
1354	* PORTME - Check if your host keeps any of these gates free from hw ints.
1355	*
1356	* Note! SELMR3SyncTSS also has code related to this interrupt handler replacing.
1357	*/
1358	/** @todo handle those dependencies better! */
1359	/** @todo Solve this in a proper manner. see @bugref{1186} */
1360	#if defined(RT_OS_WINDOWS) && defined(RT_ARCH_X86)
1361	if (iTrap == 0x2E)
1362	#elif defined(RT_OS_LINUX)
1363	if (iTrap == 0x80)
1364	#else
1365	if (0)
1366	#endif
1367	{
1368	if ( GuestIdte.Gen.u1Present
1369	&& ( GuestIdte.Gen.u5Type2 == VBOX_IDTE_TYPE2_TRAP_32
1370	\|\| GuestIdte.Gen.u5Type2 == VBOX_IDTE_TYPE2_INT_32)
1371	&& GuestIdte.Gen.u2DPL == 3)
1372	{
1373	PVBOXIDTE pIdte = &pVM->trpm.s.aIdt[iTrap];
1374
1375	GuestIdte.Gen.u5Type2 = VBOX_IDTE_TYPE2_TRAP_32;
1376	GuestIdte.Gen.u16OffsetHigh = pHandler >> 16;
1377	GuestIdte.Gen.u16OffsetLow = pHandler & 0xFFFF;
1378	GuestIdte.Gen.u16SegSel \|= 1; //ring 1
1379	*pIdte = GuestIdte;
1380
1381	/* Mark it for relocation purposes. */
1382	ASMBitSet(&pVM->trpm.s.au32IdtPatched[0], iTrap);
1383
1384	/* Also store it in our guest trap array. */
1385	pVM->trpm.s.aGuestTrapHandler[iTrap] = pHandler;
1386
1387	Log(("Setting trap handler %x to %08X (direct)\n", iTrap, pHandler));
1388	return VINF_SUCCESS;
1389	}
1390	/* ok, let's try to install a trampoline handler then. */
1391	}
1392	}
1393
1394	if ( GuestIdte.Gen.u1Present
1395	&& ( GuestIdte.Gen.u5Type2 == VBOX_IDTE_TYPE2_TRAP_32
1396	\|\| GuestIdte.Gen.u5Type2 == VBOX_IDTE_TYPE2_INT_32)
1397	&& (GuestIdte.Gen.u2DPL == 3 \|\| GuestIdte.Gen.u2DPL == 0))
1398	{
1399	/*
1400	* Save handler which can be used for a trampoline call inside the GC
1401	*/
1402	Log(("Setting trap handler %x to %08X\n", iTrap, pHandler));
1403	pVM->trpm.s.aGuestTrapHandler[iTrap] = pHandler;
1404	return VINF_SUCCESS;
1405	}
1406	return VERR_INVALID_PARAMETER;
1407	}
1408
1409
1410	/**
1411	* Check if address is a gate handler (interrupt/trap/task/anything).
1412	*
1413	* @returns True is gate handler, false if not.
1414	*
1415	* @param pVM The cross context VM structure.
1416	* @param GCPtr GC address to check.
1417	*/
1418	VMMR3DECL(bool) TRPMR3IsGateHandler(PVM pVM, RTRCPTR GCPtr)
1419	{
1420	/* Only valid in raw mode which implies 1 VCPU */
1421	Assert(PATMIsEnabled(pVM) && pVM->cCpus == 1);
1422	PVMCPU pVCpu = &pVM->aCpus[0];
1423
1424	/*
1425	* Read IDTR and calc last entry.
1426	*/
1427	uint16_t cbIDT;
1428	RTGCPTR GCPtrIDTE = CPUMGetGuestIDTR(pVCpu, &cbIDT);
1429	unsigned cEntries = (cbIDT + 1) / sizeof(VBOXIDTE);
1430	if (!cEntries)
1431	return false;
1432	RTGCPTR GCPtrIDTELast = GCPtrIDTE + (cEntries - 1) * sizeof(VBOXIDTE);
1433
1434	/*
1435	* Outer loop: iterate pages.
1436	*/
1437	while (GCPtrIDTE <= GCPtrIDTELast)
1438	{
1439	/*
1440	* Convert this page to a HC address.
1441	* (This function checks for not-present pages.)
1442	*/
1443	PCVBOXIDTE pIDTE;
1444	PGMPAGEMAPLOCK Lock;
1445	int rc = PGMPhysGCPtr2CCPtrReadOnly(pVCpu, GCPtrIDTE, (const void **)&pIDTE, &Lock);
1446	if (RT_SUCCESS(rc))
1447	{
1448	/*
1449	* Inner Loop: Iterate the data on this page looking for an entry equal to GCPtr.
1450	* N.B. Member of the Flat Earth Society...
1451	*/
1452	while (GCPtrIDTE <= GCPtrIDTELast)
1453	{
1454	if (pIDTE->Gen.u1Present)
1455	{
1456	RTRCPTR GCPtrHandler = VBOXIDTE_OFFSET(*pIDTE);
1457	if (GCPtr == GCPtrHandler)
1458	{
1459	PGMPhysReleasePageMappingLock(pVM, &Lock);
1460	return true;
1461	}
1462	}
1463
1464	/* next entry */
1465	if ((GCPtrIDTE & PAGE_OFFSET_MASK) + sizeof(VBOXIDTE) >= PAGE_SIZE)
1466	{
1467	AssertMsg(!(GCPtrIDTE & (sizeof(VBOXIDTE) - 1)),
1468	("IDT is crossing pages and it's not aligned! GCPtrIDTE=%#x cbIDT=%#x\n", GCPtrIDTE, cbIDT));
1469	GCPtrIDTE += sizeof(VBOXIDTE);
1470	break;
1471	}
1472	GCPtrIDTE += sizeof(VBOXIDTE);
1473	pIDTE++;
1474	}
1475	PGMPhysReleasePageMappingLock(pVM, &Lock);
1476	}
1477	else
1478	{
1479	/* Skip to the next page (if any). Take care not to wrap around the address space. */
1480	if ((GCPtrIDTELast >> PAGE_SHIFT) == (GCPtrIDTE >> PAGE_SHIFT))
1481	return false;
1482	GCPtrIDTE = RT_ALIGN_T(GCPtrIDTE, PAGE_SIZE, RTGCPTR) + PAGE_SIZE + (GCPtrIDTE & (sizeof(VBOXIDTE) - 1));
1483	}
1484	}
1485	return false;
1486	}
1487
1488	#endif /* VBOX_WITH_RAW_MODE */
1489
1490	/**
1491	* Inject event (such as external irq or trap).
1492	*
1493	* @returns VBox status code.
1494	* @param pVM The cross context VM structure.
1495	* @param pVCpu The cross context virtual CPU structure.
1496	* @param enmEvent Trpm event type
1497	* @param pfInjected Where to store whether the event was injected or not.
1498	*/
1499	VMMR3DECL(int) TRPMR3InjectEvent(PVM pVM, PVMCPU pVCpu, TRPMEVENT enmEvent, bool *pfInjected)
1500	{
1501	#ifdef VBOX_WITH_RAW_MODE
1502	PCPUMCTX pCtx = CPUMQueryGuestCtxPtr(pVCpu);
1503	Assert(!PATMIsPatchGCAddr(pVM, pCtx->eip));
1504	#endif
1505	Assert(!VMCPU_FF_IS_SET(pVCpu, VMCPU_FF_INHIBIT_INTERRUPTS));
1506	Assert(pfInjected);
1507	*pfInjected = false;
1508
1509	/* Currently only useful for external hardware interrupts. */
1510	Assert(enmEvent == TRPM_HARDWARE_INT);
1511
1512	#if defined(TRPM_FORWARD_TRAPS_IN_GC)
1513
1514	# ifdef LOG_ENABLED
1515	DBGFR3_INFO_LOG(pVM, pVCpu, "cpumguest", "TRPMInject");
1516	DBGFR3_DISAS_INSTR_CUR_LOG(pVCpu, "TRPMInject");
1517	# endif
1518
1519	Assert(!CPUMIsGuestInNestedHwvirtMode(pCtx));
1520	uint8_t u8Interrupt = 0;
1521	int rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
1522	Log(("TRPMR3InjectEvent: CPU%d u8Interrupt=%d (%#x) rc=%Rrc\n", pVCpu->idCpu, u8Interrupt, u8Interrupt, rc));
1523	if (RT_SUCCESS(rc))
1524	{
1525	if (EMIsSupervisorCodeRecompiled(pVM) \|\| !VM_IS_RAW_MODE_ENABLED(pVM))
1526	{
1527	STAM_COUNTER_INC(&pVM->trpm.s.paStatForwardedIRQR3[u8Interrupt]);
1528	if (!VM_IS_NEM_ENABLED(pVM))
1529	{
1530	rc = TRPMAssertTrap(pVCpu, u8Interrupt, enmEvent);
1531	AssertRC(rc);
1532	return HMR3IsActive(pVCpu) ? VINF_EM_RESCHEDULE_HM : VINF_EM_RESCHEDULE_REM;
1533	}
1534	VBOXSTRICTRC rcStrict = IEMInjectTrap(pVCpu, u8Interrupt, enmEvent, 0, 0, 0);
1535	if (rcStrict == VINF_SUCCESS)
1536	return VINF_EM_RESCHEDULE;
1537	return VBOXSTRICTRC_TODO(rcStrict);
1538	}
1539
1540	/* If the guest gate is not patched, then we will check (again) if we can patch it. */
1541	if (pVM->trpm.s.aGuestTrapHandler[u8Interrupt] == TRPM_INVALID_HANDLER)
1542	{
1543	CSAMR3CheckGates(pVM, u8Interrupt, 1);
1544	Log(("TRPMR3InjectEvent: recheck gate %x -> valid=%d\n", u8Interrupt, TRPMR3GetGuestTrapHandler(pVM, u8Interrupt) != TRPM_INVALID_HANDLER));
1545	}
1546
1547	if (pVM->trpm.s.aGuestTrapHandler[u8Interrupt] != TRPM_INVALID_HANDLER)
1548	{
1549	/* Must check pending forced actions as our IDT or GDT might be out of sync */
1550	rc = EMR3CheckRawForcedActions(pVM, pVCpu);
1551	if (rc == VINF_SUCCESS)
1552	{
1553	/* There's a handler -> let's execute it in raw mode */
1554	rc = TRPMForwardTrap(pVCpu, CPUMCTX2CORE(pCtx), u8Interrupt, 0, TRPM_TRAP_NO_ERRORCODE, enmEvent, -1);
1555	if (rc == VINF_SUCCESS /* Don't use RT_SUCCESS */)
1556	{
1557	Assert(!VMCPU_FF_IS_ANY_SET(pVCpu, VMCPU_FF_SELM_SYNC_GDT \| VMCPU_FF_SELM_SYNC_LDT \| VMCPU_FF_TRPM_SYNC_IDT \| VMCPU_FF_SELM_SYNC_TSS));
1558
1559	STAM_COUNTER_INC(&pVM->trpm.s.paStatForwardedIRQR3[u8Interrupt]);
1560	return VINF_EM_RESCHEDULE_RAW;
1561	}
1562	}
1563	}
1564	else
1565	STAM_COUNTER_INC(&pVM->trpm.s.StatForwardFailNoHandler);
1566
1567	rc = TRPMAssertTrap(pVCpu, u8Interrupt, enmEvent);
1568	AssertRCReturn(rc, rc);
1569	}
1570	else
1571	{
1572	/* Can happen if the interrupt is masked by TPR or APIC is disabled. */
1573	AssertMsg(rc == VERR_APIC_INTR_MASKED_BY_TPR \|\| rc == VERR_NO_DATA, ("PDMGetInterrupt failed. rc=%Rrc\n", rc));
1574	return HMR3IsActive(pVCpu) ? VINF_EM_RESCHEDULE_HM
1575	: VM_IS_NEM_ENABLED(pVM) ? VINF_EM_RESCHEDULE
1576	: VINF_EM_RESCHEDULE_REM; /* (Heed the halted state if this is changed!) */
1577	}
1578
1579	/** @todo check if it's safe to translate the patch address to the original guest address.
1580	* this implies a safe state in translated instructions and should take sti successors into account (instruction fusing)
1581	*/
1582	/* Note: if it's a PATM address, then we'll go back to raw mode regardless of the return codes below. */
1583
1584	/* Fall back to the recompiler */
1585	return VINF_EM_RESCHEDULE_REM; /* (Heed the halted state if this is changed!) */
1586
1587	#else /* !TRPM_FORWARD_TRAPS_IN_GC */
1588	RT_NOREF(pVM, enmEvent);
1589	uint8_t u8Interrupt = 0;
1590	int rc = PDMGetInterrupt(pVCpu, &u8Interrupt);
1591	Log(("TRPMR3InjectEvent: u8Interrupt=%d (%#x) rc=%Rrc\n", u8Interrupt, u8Interrupt, rc));
1592	if (RT_SUCCESS(rc))
1593	{
1594	*pfInjected = true;
1595	if (!VM_IS_NEM_ENABLED(pVM))
1596	{
1597	rc = TRPMAssertTrap(pVCpu, u8Interrupt, TRPM_HARDWARE_INT);
1598	AssertRC(rc);
1599	}
1600	else
1601	{
1602	VBOXSTRICTRC rcStrict = IEMInjectTrap(pVCpu, u8Interrupt, enmEvent, 0, 0, 0);
1603	/** @todo NSTVMX: NSTSVM: We don't support nested VMX or nested SVM with NEM yet.
1604	* If so we should handle VINF_SVM_VMEXIT and VINF_VMX_VMEXIT codes here. */
1605	if (rcStrict != VINF_SUCCESS)
1606	return VBOXSTRICTRC_TODO(rcStrict);
1607	}
1608	STAM_COUNTER_INC(&pVM->trpm.s.paStatForwardedIRQR3[u8Interrupt]);
1609	}
1610	else
1611	{
1612	/* Can happen if the interrupt is masked by TPR or APIC is disabled. */
1613	AssertMsg(rc == VERR_APIC_INTR_MASKED_BY_TPR \|\| rc == VERR_NO_DATA, ("PDMGetInterrupt failed. rc=%Rrc\n", rc));
1614	}
1615	return HMR3IsActive(pVCpu) ? VINF_EM_RESCHEDULE_HM
1616	: VM_IS_NEM_ENABLED(pVM) ? VINF_EM_RESCHEDULE
1617	: VINF_EM_RESCHEDULE_REM; /* (Heed the halted state if this is changed!) */
1618	#endif /* !TRPM_FORWARD_TRAPS_IN_GC */
1619	}
1620
1621
1622	/**
1623	* Displays the pending TRPM event.
1624	*
1625	* @param pVM The cross context VM structure.
1626	* @param pHlp The info helper functions.
1627	* @param pszArgs Arguments, ignored.
1628	*/
1629	static DECLCALLBACK(void) trpmR3InfoEvent(PVM pVM, PCDBGFINFOHLP pHlp, const char *pszArgs)
1630	{
1631	NOREF(pszArgs);
1632	PVMCPU pVCpu = VMMGetCpu(pVM);
1633	if (!pVCpu)
1634	pVCpu = &pVM->aCpus[0];
1635
1636	uint8_t uVector;
1637	uint8_t cbInstr;
1638	TRPMEVENT enmTrapEvent;
1639	RTGCUINT uErrorCode;
1640	RTGCUINTPTR uCR2;
1641	int rc = TRPMQueryTrapAll(pVCpu, &uVector, &enmTrapEvent, &uErrorCode, &uCR2, &cbInstr);
1642	if (RT_SUCCESS(rc))
1643	{
1644	pHlp->pfnPrintf(pHlp, "CPU[%u]: TRPM event\n", pVCpu->idCpu);
1645	static const char * const s_apszTrpmEventType[] =
1646	{
1647	"Trap",
1648	"Hardware Int",
1649	"Software Int"
1650	};
1651	if (RT_LIKELY((size_t)enmTrapEvent < RT_ELEMENTS(s_apszTrpmEventType)))
1652	{
1653	pHlp->pfnPrintf(pHlp, " Type = %s\n", s_apszTrpmEventType[enmTrapEvent]);
1654	pHlp->pfnPrintf(pHlp, " uVector = %#x\n", uVector);
1655	pHlp->pfnPrintf(pHlp, " uErrorCode = %#RGu\n", uErrorCode);
1656	pHlp->pfnPrintf(pHlp, " uCR2 = %#RGp\n", uCR2);
1657	pHlp->pfnPrintf(pHlp, " cbInstr = %u bytes\n", cbInstr);
1658	}
1659	else
1660	pHlp->pfnPrintf(pHlp, " Type = %#x (Invalid!)\n", enmTrapEvent);
1661	}
1662	else if (rc == VERR_TRPM_NO_ACTIVE_TRAP)
1663	pHlp->pfnPrintf(pHlp, "CPU[%u]: TRPM event (None)\n", pVCpu->idCpu);
1664	else
1665	pHlp->pfnPrintf(pHlp, "CPU[%u]: TRPM event - Query failed! rc=%Rrc\n", pVCpu->idCpu, rc);
1666	}
1667

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source: vbox/trunk/src/VBox/VMM/VMMR3/TRPM.cpp@ 79345

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