DBGCEmulateCodeView.cpp@ 46876

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1	/* $Id: DBGCEmulateCodeView.cpp 46221 2013-05-22 15:30:41Z vboxsync $ */
2	/** @file
3	* DBGC - Debugger Console, CodeView / WinDbg Emulation.
4	*/
5
6	/*
7	* Copyright (C) 2006-2013 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	* Header Files *
20	*******************************************************************************/
21	#define LOG_GROUP LOG_GROUP_DBGC
22	#include <VBox/dbg.h>
23	#include <VBox/vmm/dbgf.h>
24	#include <VBox/vmm/pgm.h>
25	#include <VBox/vmm/cpum.h>
26	#include <VBox/dis.h>
27	#include <VBox/param.h>
28	#include <VBox/err.h>
29	#include <VBox/log.h>
30
31	#include <iprt/asm.h>
32	#include <iprt/mem.h>
33	#include <iprt/string.h>
34	#include <iprt/assert.h>
35	#include <iprt/ctype.h>
36
37	#include <stdlib.h>
38	#include <stdio.h>
39
40	#include "DBGCInternal.h"
41
42
43	/*******************************************************************************
44	* Internal Functions *
45	*******************************************************************************/
46	static FNDBGCCMD dbgcCmdBrkAccess;
47	static FNDBGCCMD dbgcCmdBrkClear;
48	static FNDBGCCMD dbgcCmdBrkDisable;
49	static FNDBGCCMD dbgcCmdBrkEnable;
50	static FNDBGCCMD dbgcCmdBrkList;
51	static FNDBGCCMD dbgcCmdBrkSet;
52	static FNDBGCCMD dbgcCmdBrkREM;
53	static FNDBGCCMD dbgcCmdDumpMem;
54	static FNDBGCCMD dbgcCmdDumpDT;
55	static FNDBGCCMD dbgcCmdDumpIDT;
56	static FNDBGCCMD dbgcCmdDumpPageDir;
57	static FNDBGCCMD dbgcCmdDumpPageDirBoth;
58	static FNDBGCCMD dbgcCmdDumpPageHierarchy;
59	static FNDBGCCMD dbgcCmdDumpPageTable;
60	static FNDBGCCMD dbgcCmdDumpPageTableBoth;
61	static FNDBGCCMD dbgcCmdDumpTSS;
62	static FNDBGCCMD dbgcCmdEditMem;
63	static FNDBGCCMD dbgcCmdGo;
64	static FNDBGCCMD dbgcCmdListModules;
65	static FNDBGCCMD dbgcCmdListNear;
66	static FNDBGCCMD dbgcCmdListSource;
67	static FNDBGCCMD dbgcCmdMemoryInfo;
68	static FNDBGCCMD dbgcCmdReg;
69	static FNDBGCCMD dbgcCmdRegGuest;
70	static FNDBGCCMD dbgcCmdRegHyper;
71	static FNDBGCCMD dbgcCmdRegTerse;
72	static FNDBGCCMD dbgcCmdSearchMem;
73	static FNDBGCCMD dbgcCmdSearchMemType;
74	static FNDBGCCMD dbgcCmdStack;
75	static FNDBGCCMD dbgcCmdTrace;
76	static FNDBGCCMD dbgcCmdUnassemble;
77
78
79	/*******************************************************************************
80	* Global Variables *
81	*******************************************************************************/
82	/** 'ba' arguments. */
83	static const DBGCVARDESC g_aArgBrkAcc[] =
84	{
85	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
86	{ 1, 1, DBGCVAR_CAT_STRING, 0, "access", "The access type: x=execute, rw=read/write (alias r), w=write, i=not implemented." },
87	{ 1, 1, DBGCVAR_CAT_NUMBER, 0, "size", "The access size: 1, 2, 4, or 8. 'x' access requires 1, and 8 requires amd64 long mode." },
88	{ 1, 1, DBGCVAR_CAT_GC_POINTER, 0, "address", "The address." },
89	{ 0, 1, DBGCVAR_CAT_NUMBER, 0, "passes", "The number of passes before we trigger the breakpoint. (0 is default)" },
90	{ 0, 1, DBGCVAR_CAT_NUMBER, DBGCVD_FLAGS_DEP_PREV, "max passes", "The number of passes after which we stop triggering the breakpoint. (~0 is default)" },
91	{ 0, 1, DBGCVAR_CAT_STRING, 0, "cmds", "String of commands to be executed when the breakpoint is hit. Quote it!" },
92	};
93
94
95	/** 'bc', 'bd', 'be' arguments. */
96	static const DBGCVARDESC g_aArgBrks[] =
97	{
98	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
99	{ 0, ~0U, DBGCVAR_CAT_NUMBER, 0, "#bp", "Breakpoint number." },
100	{ 0, 1, DBGCVAR_CAT_STRING, 0, "all", "All breakpoints." },
101	};
102
103
104	/** 'bp' arguments. */
105	static const DBGCVARDESC g_aArgBrkSet[] =
106	{
107	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
108	{ 1, 1, DBGCVAR_CAT_GC_POINTER, 0, "address", "The address." },
109	{ 0, 1, DBGCVAR_CAT_NUMBER, 0, "passes", "The number of passes before we trigger the breakpoint. (0 is default)" },
110	{ 0, 1, DBGCVAR_CAT_NUMBER, DBGCVD_FLAGS_DEP_PREV, "max passes", "The number of passes after which we stop triggering the breakpoint. (~0 is default)" },
111	{ 0, 1, DBGCVAR_CAT_STRING, 0, "cmds", "String of commands to be executed when the breakpoint is hit. Quote it!" },
112	};
113
114
115	/** 'br' arguments. */
116	static const DBGCVARDESC g_aArgBrkREM[] =
117	{
118	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
119	{ 1, 1, DBGCVAR_CAT_GC_POINTER, 0, "address", "The address." },
120	{ 0, 1, DBGCVAR_CAT_NUMBER, 0, "passes", "The number of passes before we trigger the breakpoint. (0 is default)" },
121	{ 0, 1, DBGCVAR_CAT_NUMBER, DBGCVD_FLAGS_DEP_PREV, "max passes", "The number of passes after which we stop triggering the breakpoint. (~0 is default)" },
122	{ 0, 1, DBGCVAR_CAT_STRING, 0, "cmds", "String of commands to be executed when the breakpoint is hit. Quote it!" },
123	};
124
125
126	/** 'd?' arguments. */
127	static const DBGCVARDESC g_aArgDumpMem[] =
128	{
129	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
130	{ 0, 1, DBGCVAR_CAT_POINTER, 0, "address", "Address where to start dumping memory." },
131	};
132
133
134	/** 'dg', 'dga', 'dl', 'dla' arguments. */
135	static const DBGCVARDESC g_aArgDumpDT[] =
136	{
137	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
138	{ 0, ~0U, DBGCVAR_CAT_NUMBER, 0, "sel", "Selector or selector range." },
139	{ 0, ~0U, DBGCVAR_CAT_POINTER, 0, "address", "Far address which selector should be dumped." },
140	};
141
142
143	/** 'di', 'dia' arguments. */
144	static const DBGCVARDESC g_aArgDumpIDT[] =
145	{
146	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
147	{ 0, ~0U, DBGCVAR_CAT_NUMBER, 0, "int", "The interrupt vector or interrupt vector range." },
148	};
149
150
151	/** 'dpd' arguments. /
152	static const DBGCVARDESC g_aArgDumpPD[] =
153	{
154	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
155	{ 0, 1, DBGCVAR_CAT_NUMBER, 0, "index", "Index into the page directory." },
156	{ 0, 1, DBGCVAR_CAT_POINTER, 0, "address", "Address which page directory entry to start dumping from. Range is applied to the page directory." },
157	};
158
159
160	/** 'dpda' arguments. */
161	static const DBGCVARDESC g_aArgDumpPDAddr[] =
162	{
163	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
164	{ 0, 1, DBGCVAR_CAT_POINTER, 0, "address", "Address of the page directory entry to start dumping from." },
165	};
166
167
168	/** 'dph' arguments. /
169	static const DBGCVARDESC g_aArgDumpPH[] =
170	{
171	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
172	{ 0, 1, DBGCVAR_CAT_GC_POINTER, 0, "address", "Where in the address space to start dumping and for how long (range). The default address/range will be used if omitted." },
173	{ 0, 1, DBGCVAR_CAT_NUMBER, DBGCVD_FLAGS_DEP_PREV, "cr3", "The CR3 value to use. The current CR3 of the context will be used if omitted." },
174	{ 0, 1, DBGCVAR_CAT_STRING, DBGCVD_FLAGS_DEP_PREV, "mode", "The paging mode: legacy, pse, pae, long, ept. Append '-np' for nested paging and '-nx' for no-execute. The current mode will be used if omitted." },
175	};
176
177
178	/** 'dpt?' arguments. */
179	static const DBGCVARDESC g_aArgDumpPT[] =
180	{
181	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
182	{ 1, 1, DBGCVAR_CAT_POINTER, 0, "address", "Address which page directory entry to start dumping from." },
183	};
184
185
186	/** 'dpta' arguments. */
187	static const DBGCVARDESC g_aArgDumpPTAddr[] =
188	{
189	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
190	{ 1, 1, DBGCVAR_CAT_POINTER, 0, "address", "Address of the page table entry to start dumping from." },
191	};
192
193
194	/** 'dt' arguments. */
195	static const DBGCVARDESC g_aArgDumpTSS[] =
196	{
197	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
198	{ 0, 1, DBGCVAR_CAT_NUMBER, 0, "tss", "TSS selector number." },
199	{ 0, 1, DBGCVAR_CAT_POINTER, 0, "tss:ign\|addr", "TSS address. If the selector is a TSS selector, the offset will be ignored." }
200	};
201
202
203	/** 'e?' arguments. */
204	static const DBGCVARDESC g_aArgEditMem[] =
205	{
206	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
207	{ 1, 1, DBGCVAR_CAT_POINTER, 0, "address", "Address where to write." },
208	{ 1, ~0U, DBGCVAR_CAT_NUMBER, 0, "value", "Value to write." },
209	};
210
211
212	/** 'lm' arguments. */
213	static const DBGCVARDESC g_aArgListMods[] =
214	{
215	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
216	{ 0, ~0U, DBGCVAR_CAT_STRING, 0, "module", "Module name." },
217	};
218
219
220	/** 'ln' arguments. */
221	static const DBGCVARDESC g_aArgListNear[] =
222	{
223	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
224	{ 0, ~0U, DBGCVAR_CAT_POINTER, 0, "address", "Address of the symbol to look up." },
225	{ 0, ~0U, DBGCVAR_CAT_SYMBOL, 0, "symbol", "Symbol to lookup." },
226	};
227
228
229	/** 'ls' arguments. */
230	static const DBGCVARDESC g_aArgListSource[] =
231	{
232	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
233	{ 0, 1, DBGCVAR_CAT_POINTER, 0, "address", "Address where to start looking for source lines." },
234	};
235
236
237	/** 'm' argument. */
238	static const DBGCVARDESC g_aArgMemoryInfo[] =
239	{
240	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
241	{ 1, 1, DBGCVAR_CAT_POINTER, 0, "address", "Pointer to obtain info about." },
242	};
243
244
245	/** 'r' arguments. */
246	static const DBGCVARDESC g_aArgReg[] =
247	{
248	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
249	{ 0, 1, DBGCVAR_CAT_SYMBOL, 0, "register", "Register to show or set." },
250	{ 0, 1, DBGCVAR_CAT_NUMBER_NO_RANGE, DBGCVD_FLAGS_DEP_PREV, "value", "New register value." },
251	};
252
253
254	/** 's' arguments. */
255	static const DBGCVARDESC g_aArgSearchMem[] =
256	{
257	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
258	{ 0, 1, DBGCVAR_CAT_OPTION, 0, "-b", "Byte string." },
259	{ 0, 1, DBGCVAR_CAT_OPTION, 0, "-w", "Word string." },
260	{ 0, 1, DBGCVAR_CAT_OPTION, 0, "-d", "DWord string." },
261	{ 0, 1, DBGCVAR_CAT_OPTION, 0, "-q", "QWord string." },
262	{ 0, 1, DBGCVAR_CAT_OPTION, 0, "-a", "ASCII string." },
263	{ 0, 1, DBGCVAR_CAT_OPTION, 0, "-u", "Unicode string." },
264	{ 0, 1, DBGCVAR_CAT_OPTION_NUMBER, 0, "-n <Hits>", "Maximum number of hits." },
265	{ 0, 1, DBGCVAR_CAT_GC_POINTER, 0, "range", "Register to show or set." },
266	{ 0, ~0U, DBGCVAR_CAT_ANY, 0, "pattern", "Pattern to search for." },
267	};
268
269
270	/** 's?' arguments. */
271	static const DBGCVARDESC g_aArgSearchMemType[] =
272	{
273	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
274	{ 1, 1, DBGCVAR_CAT_GC_POINTER, 0, "range", "Register to show or set." },
275	{ 1, ~0U, DBGCVAR_CAT_ANY, 0, "pattern", "Pattern to search for." },
276	};
277
278
279	/** 'u' arguments. */
280	static const DBGCVARDESC g_aArgUnassemble[] =
281	{
282	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
283	{ 0, 1, DBGCVAR_CAT_POINTER, 0, "address", "Address where to start disassembling." },
284	};
285
286
287	/** Command descriptors for the CodeView / WinDbg emulation.
288	* The emulation isn't attempting to be identical, only somewhat similar.
289	*/
290	const DBGCCMD g_aCmdsCodeView[] =
291	{
292	/* pszCmd, cArgsMin, cArgsMax, paArgDescs, cArgDescs, fFlags, pfnHandler pszSyntax, ....pszDescription */
293	{ "ba", 3, 6, &g_aArgBrkAcc[0], RT_ELEMENTS(g_aArgBrkAcc), 0, dbgcCmdBrkAccess, "<access> <size> <address> [passes [max passes]] [cmds]",
294	"Sets a data access breakpoint." },
295	{ "bc", 1, ~0U, &g_aArgBrks[0], RT_ELEMENTS(g_aArgBrks), 0, dbgcCmdBrkClear, "all \| <bp#> [bp# []]", "Deletes a set of breakpoints." },
296	{ "bd", 1, ~0U, &g_aArgBrks[0], RT_ELEMENTS(g_aArgBrks), 0, dbgcCmdBrkDisable, "all \| <bp#> [bp# []]", "Disables a set of breakpoints." },
297	{ "be", 1, ~0U, &g_aArgBrks[0], RT_ELEMENTS(g_aArgBrks), 0, dbgcCmdBrkEnable, "all \| <bp#> [bp# []]", "Enables a set of breakpoints." },
298	{ "bl", 0, 0, NULL, 0, 0, dbgcCmdBrkList, "", "Lists all the breakpoints." },
299	{ "bp", 1, 4, &g_aArgBrkSet[0], RT_ELEMENTS(g_aArgBrkSet), 0, dbgcCmdBrkSet, "<address> [passes [max passes]] [cmds]",
300	"Sets a breakpoint (int 3)." },
301	{ "br", 1, 4, &g_aArgBrkREM[0], RT_ELEMENTS(g_aArgBrkREM), 0, dbgcCmdBrkREM, "<address> [passes [max passes]] [cmds]",
302	"Sets a recompiler specific breakpoint." },
303	{ "d", 0, 1, &g_aArgDumpMem[0], RT_ELEMENTS(g_aArgDumpMem), 0, dbgcCmdDumpMem, "[addr]", "Dump memory using last element size." },
304	{ "da", 0, 1, &g_aArgDumpMem[0], RT_ELEMENTS(g_aArgDumpMem), 0, dbgcCmdDumpMem, "[addr]", "Dump memory as ascii string." },
305	{ "db", 0, 1, &g_aArgDumpMem[0], RT_ELEMENTS(g_aArgDumpMem), 0, dbgcCmdDumpMem, "[addr]", "Dump memory in bytes." },
306	{ "dd", 0, 1, &g_aArgDumpMem[0], RT_ELEMENTS(g_aArgDumpMem), 0, dbgcCmdDumpMem, "[addr]", "Dump memory in double words." },
307	{ "da", 0, 1, &g_aArgDumpMem[0], RT_ELEMENTS(g_aArgDumpMem), 0, dbgcCmdDumpMem, "[addr]", "Dump memory as ascii string." },
308	{ "dg", 0, ~0U, &g_aArgDumpDT[0], RT_ELEMENTS(g_aArgDumpDT), 0, dbgcCmdDumpDT, "[sel [..]]", "Dump the global descriptor table (GDT)." },
309	{ "dga", 0, ~0U, &g_aArgDumpDT[0], RT_ELEMENTS(g_aArgDumpDT), 0, dbgcCmdDumpDT, "[sel [..]]", "Dump the global descriptor table (GDT) including not-present entries." },
310	{ "di", 0, ~0U, &g_aArgDumpIDT[0], RT_ELEMENTS(g_aArgDumpIDT), 0, dbgcCmdDumpIDT, "[int [..]]", "Dump the interrupt descriptor table (IDT)." },
311	{ "dia", 0, ~0U, &g_aArgDumpIDT[0], RT_ELEMENTS(g_aArgDumpIDT), 0, dbgcCmdDumpIDT, "[int [..]]", "Dump the interrupt descriptor table (IDT) including not-present entries." },
312	{ "dl", 0, ~0U, &g_aArgDumpDT[0], RT_ELEMENTS(g_aArgDumpDT), 0, dbgcCmdDumpDT, "[sel [..]]", "Dump the local descriptor table (LDT)." },
313	{ "dla", 0, ~0U, &g_aArgDumpDT[0], RT_ELEMENTS(g_aArgDumpDT), 0, dbgcCmdDumpDT, "[sel [..]]", "Dump the local descriptor table (LDT) including not-present entries." },
314	{ "dpd", 0, 1, &g_aArgDumpPD[0], RT_ELEMENTS(g_aArgDumpPD), 0, dbgcCmdDumpPageDir, "[addr\|index]", "Dumps page directory entries of the default context." },
315	{ "dpda", 0, 1, &g_aArgDumpPDAddr[0],RT_ELEMENTS(g_aArgDumpPDAddr), 0, dbgcCmdDumpPageDir, "[addr]", "Dumps memory at given address as a page directory." },
316	{ "dpdb", 0, 1, &g_aArgDumpPD[0], RT_ELEMENTS(g_aArgDumpPD), 0, dbgcCmdDumpPageDirBoth, "[addr\|index]", "Dumps page directory entries of the guest and the hypervisor. " },
317	{ "dpdg", 0, 1, &g_aArgDumpPD[0], RT_ELEMENTS(g_aArgDumpPD), 0, dbgcCmdDumpPageDir, "[addr\|index]", "Dumps page directory entries of the guest." },
318	{ "dpdh", 0, 1, &g_aArgDumpPD[0], RT_ELEMENTS(g_aArgDumpPD), 0, dbgcCmdDumpPageDir, "[addr\|index]", "Dumps page directory entries of the hypervisor. " },
319	{ "dph", 0, 3, &g_aArgDumpPH[0], RT_ELEMENTS(g_aArgDumpPH), 0, dbgcCmdDumpPageHierarchy, "[addr [cr3 [mode]]", "Dumps the paging hierarchy at for specfied address range. Default context." },
320	{ "dphg", 0, 3, &g_aArgDumpPH[0], RT_ELEMENTS(g_aArgDumpPH), 0, dbgcCmdDumpPageHierarchy, "[addr [cr3 [mode]]", "Dumps the paging hierarchy at for specfied address range. Guest context." },
321	{ "dphh", 0, 3, &g_aArgDumpPH[0], RT_ELEMENTS(g_aArgDumpPH), 0, dbgcCmdDumpPageHierarchy, "[addr [cr3 [mode]]", "Dumps the paging hierarchy at for specfied address range. Hypervisor context." },
322	{ "dpt", 1, 1, &g_aArgDumpPT[0], RT_ELEMENTS(g_aArgDumpPT), 0, dbgcCmdDumpPageTable,"<addr>", "Dumps page table entries of the default context." },
323	{ "dpta", 1, 1, &g_aArgDumpPTAddr[0],RT_ELEMENTS(g_aArgDumpPTAddr), 0, dbgcCmdDumpPageTable,"<addr>", "Dumps memory at given address as a page table." },
324	{ "dptb", 1, 1, &g_aArgDumpPT[0], RT_ELEMENTS(g_aArgDumpPT), 0, dbgcCmdDumpPageTableBoth,"<addr>", "Dumps page table entries of the guest and the hypervisor." },
325	{ "dptg", 1, 1, &g_aArgDumpPT[0], RT_ELEMENTS(g_aArgDumpPT), 0, dbgcCmdDumpPageTable,"<addr>", "Dumps page table entries of the guest." },
326	{ "dpth", 1, 1, &g_aArgDumpPT[0], RT_ELEMENTS(g_aArgDumpPT), 0, dbgcCmdDumpPageTable,"<addr>", "Dumps page table entries of the hypervisor." },
327	{ "dq", 0, 1, &g_aArgDumpMem[0], RT_ELEMENTS(g_aArgDumpMem), 0, dbgcCmdDumpMem, "[addr]", "Dump memory in quad words." },
328	{ "dt", 0, 1, &g_aArgDumpTSS[0], RT_ELEMENTS(g_aArgDumpTSS), 0, dbgcCmdDumpTSS, "[tss\|tss:ign\|addr]", "Dump the task state segment (TSS)." },
329	{ "dt16", 0, 1, &g_aArgDumpTSS[0], RT_ELEMENTS(g_aArgDumpTSS), 0, dbgcCmdDumpTSS, "[tss\|tss:ign\|addr]", "Dump the 16-bit task state segment (TSS)." },
330	{ "dt32", 0, 1, &g_aArgDumpTSS[0], RT_ELEMENTS(g_aArgDumpTSS), 0, dbgcCmdDumpTSS, "[tss\|tss:ign\|addr]", "Dump the 32-bit task state segment (TSS)." },
331	{ "dt64", 0, 1, &g_aArgDumpTSS[0], RT_ELEMENTS(g_aArgDumpTSS), 0, dbgcCmdDumpTSS, "[tss\|tss:ign\|addr]", "Dump the 64-bit task state segment (TSS)." },
332	{ "dw", 0, 1, &g_aArgDumpMem[0], RT_ELEMENTS(g_aArgDumpMem), 0, dbgcCmdDumpMem, "[addr]", "Dump memory in words." },
333	/** @todo add 'e', 'ea str', 'eza str', 'eu str' and 'ezu str'. See also
334	* dbgcCmdSearchMem and its dbgcVarsToBytes usage. */
335	{ "eb", 2, 2, &g_aArgEditMem[0], RT_ELEMENTS(g_aArgEditMem), 0, dbgcCmdEditMem, "<addr> <value>", "Write a 1-byte value to memory." },
336	{ "ew", 2, 2, &g_aArgEditMem[0], RT_ELEMENTS(g_aArgEditMem), 0, dbgcCmdEditMem, "<addr> <value>", "Write a 2-byte value to memory." },
337	{ "ed", 2, 2, &g_aArgEditMem[0], RT_ELEMENTS(g_aArgEditMem), 0, dbgcCmdEditMem, "<addr> <value>", "Write a 4-byte value to memory." },
338	{ "eq", 2, 2, &g_aArgEditMem[0], RT_ELEMENTS(g_aArgEditMem), 0, dbgcCmdEditMem, "<addr> <value>", "Write a 8-byte value to memory." },
339	{ "g", 0, 0, NULL, 0, 0, dbgcCmdGo, "", "Continue execution." },
340	{ "k", 0, 0, NULL, 0, 0, dbgcCmdStack, "", "Callstack." },
341	{ "kg", 0, 0, NULL, 0, 0, dbgcCmdStack, "", "Callstack - guest." },
342	{ "kh", 0, 0, NULL, 0, 0, dbgcCmdStack, "", "Callstack - hypervisor." },
343	{ "lm", 0, ~0U, &g_aArgListMods[0], RT_ELEMENTS(g_aArgListMods), 0, dbgcCmdListModules, "[module [..]]", "List modules." },
344	{ "lmv", 0, ~0U, &g_aArgListMods[0], RT_ELEMENTS(g_aArgListMods), 0, dbgcCmdListModules, "[module [..]]", "List modules, verbose." },
345	{ "lmo", 0, ~0U, &g_aArgListMods[0], RT_ELEMENTS(g_aArgListMods), 0, dbgcCmdListModules, "[module [..]]", "List modules and their segments." },
346	{ "lmov", 0, ~0U, &g_aArgListMods[0], RT_ELEMENTS(g_aArgListMods), 0, dbgcCmdListModules, "[module [..]]", "List modules and their segments, verbose." },
347	{ "ln", 0, ~0U, &g_aArgListNear[0], RT_ELEMENTS(g_aArgListNear), 0, dbgcCmdListNear, "[addr/sym [..]]", "List symbols near to the address. Default address is CS:EIP." },
348	{ "ls", 0, 1, &g_aArgListSource[0],RT_ELEMENTS(g_aArgListSource), 0, dbgcCmdListSource, "[addr]", "Source." },
349	{ "m", 1, 1, &g_aArgMemoryInfo[0],RT_ELEMENTS(g_aArgMemoryInfo), 0, dbgcCmdMemoryInfo, "<addr>", "Display information about that piece of memory." },
350	{ "r", 0, 2, &g_aArgReg[0], RT_ELEMENTS(g_aArgReg), 0, dbgcCmdReg, "[reg [newval]]", "Show or set register(s) - active reg set." },
351	{ "rg", 0, 2, &g_aArgReg[0], RT_ELEMENTS(g_aArgReg), 0, dbgcCmdRegGuest, "[reg [newval]]", "Show or set register(s) - guest reg set." },
352	{ "rg32", 0, 0, NULL, 0, 0, dbgcCmdRegGuest, "", "Show 32-bit guest registers." },
353	{ "rg64", 0, 0, NULL, 0, 0, dbgcCmdRegGuest, "", "Show 64-bit guest registers." },
354	{ "rh", 0, 2, &g_aArgReg[0], RT_ELEMENTS(g_aArgReg), 0, dbgcCmdRegHyper, "[reg [newval]]", "Show or set register(s) - hypervisor reg set." },
355	{ "rt", 0, 0, NULL, 0, 0, dbgcCmdRegTerse, "", "Toggles terse / verbose register info." },
356	{ "s", 0, ~0U, &g_aArgSearchMem[0], RT_ELEMENTS(g_aArgSearchMem), 0, dbgcCmdSearchMem, "[options] <range> <pattern>", "Continue last search." },
357	{ "sa", 2, ~0U, &g_aArgSearchMemType[0], RT_ELEMENTS(g_aArgSearchMemType),0, dbgcCmdSearchMemType, "<range> <pattern>", "Search memory for an ascii string." },
358	{ "sb", 2, ~0U, &g_aArgSearchMemType[0], RT_ELEMENTS(g_aArgSearchMemType),0, dbgcCmdSearchMemType, "<range> <pattern>", "Search memory for one or more bytes." },
359	{ "sd", 2, ~0U, &g_aArgSearchMemType[0], RT_ELEMENTS(g_aArgSearchMemType),0, dbgcCmdSearchMemType, "<range> <pattern>", "Search memory for one or more double words." },
360	{ "sq", 2, ~0U, &g_aArgSearchMemType[0], RT_ELEMENTS(g_aArgSearchMemType),0, dbgcCmdSearchMemType, "<range> <pattern>", "Search memory for one or more quad words." },
361	{ "su", 2, ~0U, &g_aArgSearchMemType[0], RT_ELEMENTS(g_aArgSearchMemType),0, dbgcCmdSearchMemType, "<range> <pattern>", "Search memory for an unicode string." },
362	{ "sw", 2, ~0U, &g_aArgSearchMemType[0], RT_ELEMENTS(g_aArgSearchMemType),0, dbgcCmdSearchMemType, "<range> <pattern>", "Search memory for one or more words." },
363	{ "t", 0, 0, NULL, 0, 0, dbgcCmdTrace, "", "Instruction trace (step into)." },
364	{ "u", 0, 1, &g_aArgUnassemble[0],RT_ELEMENTS(g_aArgUnassemble), 0, dbgcCmdUnassemble, "[addr]", "Unassemble." },
365	{ "u64", 0, 1, &g_aArgUnassemble[0],RT_ELEMENTS(g_aArgUnassemble), 0, dbgcCmdUnassemble, "[addr]", "Unassemble 64-bit code." },
366	{ "u32", 0, 1, &g_aArgUnassemble[0],RT_ELEMENTS(g_aArgUnassemble), 0, dbgcCmdUnassemble, "[addr]", "Unassemble 32-bit code." },
367	{ "u16", 0, 1, &g_aArgUnassemble[0],RT_ELEMENTS(g_aArgUnassemble), 0, dbgcCmdUnassemble, "[addr]", "Unassemble 16-bit code." },
368	{ "uv86", 0, 1, &g_aArgUnassemble[0],RT_ELEMENTS(g_aArgUnassemble), 0, dbgcCmdUnassemble, "[addr]", "Unassemble 16-bit code with v8086/real mode addressing." },
369	};
370
371	/** The number of commands in the CodeView/WinDbg emulation. */
372	const uint32_t g_cCmdsCodeView = RT_ELEMENTS(g_aCmdsCodeView);
373
374
375
376
377	/**
378	* @interface_method_impl{FNDBCCMD, The 'go' command.}
379	*/
380	static DECLCALLBACK(int) dbgcCmdGo(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
381	{
382	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
383
384	/*
385	* Check if the VM is halted or not before trying to resume it.
386	*/
387	if (!DBGFR3IsHalted(pUVM))
388	return DBGCCmdHlpFail(pCmdHlp, pCmd, "The VM is already running");
389
390	int rc = DBGFR3Resume(pUVM);
391	if (RT_FAILURE(rc))
392	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "DBGFR3Resume");
393
394	NOREF(paArgs); NOREF(cArgs);
395	return VINF_SUCCESS;
396	}
397
398
399	/**
400	* @interface_method_impl{FNDBCCMD, The 'ba' command.}
401	*/
402	static DECLCALLBACK(int) dbgcCmdBrkAccess(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
403	{
404	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
405
406	/*
407	* Interpret access type.
408	*/
409	if ( !strchr("xrwi", paArgs[0].u.pszString[0])
410	\|\| paArgs[0].u.pszString[1])
411	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid access type '%s' for '%s'. Valid types are 'e', 'r', 'w' and 'i'",
412	paArgs[0].u.pszString, pCmd->pszCmd);
413	uint8_t fType = 0;
414	switch (paArgs[0].u.pszString[0])
415	{
416	case 'x': fType = X86_DR7_RW_EO; break;
417	case 'r': fType = X86_DR7_RW_RW; break;
418	case 'w': fType = X86_DR7_RW_WO; break;
419	case 'i': fType = X86_DR7_RW_IO; break;
420	}
421
422	/*
423	* Validate size.
424	*/
425	if (fType == X86_DR7_RW_EO && paArgs[1].u.u64Number != 1)
426	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid access size %RX64 for '%s'. 'x' access type requires size 1!",
427	paArgs[1].u.u64Number, pCmd->pszCmd);
428	switch (paArgs[1].u.u64Number)
429	{
430	case 1:
431	case 2:
432	case 4:
433	break;
434	/case 8: - later/
435	default:
436	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid access size %RX64 for '%s'. 1, 2 or 4!",
437	paArgs[1].u.u64Number, pCmd->pszCmd);
438	}
439	uint8_t cb = (uint8_t)paArgs[1].u.u64Number;
440
441	/*
442	* Convert the pointer to a DBGF address.
443	*/
444	DBGFADDRESS Address;
445	int rc = DBGCCmdHlpVarToDbgfAddr(pCmdHlp, &paArgs[2], &Address);
446	if (RT_FAILURE(rc))
447	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "DBGCCmdHlpVarToDbgfAddr(,%DV,)", &paArgs[2]);
448
449	/*
450	* Pick out the optional arguments.
451	*/
452	uint64_t iHitTrigger = 0;
453	uint64_t iHitDisable = ~0;
454	const char *pszCmds = NULL;
455	unsigned iArg = 3;
456	if (iArg < cArgs && paArgs[iArg].enmType == DBGCVAR_TYPE_NUMBER)
457	{
458	iHitTrigger = paArgs[iArg].u.u64Number;
459	iArg++;
460	if (iArg < cArgs && paArgs[iArg].enmType == DBGCVAR_TYPE_NUMBER)
461	{
462	iHitDisable = paArgs[iArg].u.u64Number;
463	iArg++;
464	}
465	}
466	if (iArg < cArgs && paArgs[iArg].enmType == DBGCVAR_TYPE_STRING)
467	{
468	pszCmds = paArgs[iArg].u.pszString;
469	iArg++;
470	}
471
472	/*
473	* Try set the breakpoint.
474	*/
475	uint32_t iBp;
476	rc = DBGFR3BpSetReg(pUVM, &Address, iHitTrigger, iHitDisable, fType, cb, &iBp);
477	if (RT_SUCCESS(rc))
478	{
479	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
480	rc = dbgcBpAdd(pDbgc, iBp, pszCmds);
481	if (RT_SUCCESS(rc))
482	return DBGCCmdHlpPrintf(pCmdHlp, "Set access breakpoint %u at %RGv\n", iBp, Address.FlatPtr);
483	if (rc == VERR_DBGC_BP_EXISTS)
484	{
485	rc = dbgcBpUpdate(pDbgc, iBp, pszCmds);
486	if (RT_SUCCESS(rc))
487	return DBGCCmdHlpPrintf(pCmdHlp, "Updated access breakpoint %u at %RGv\n", iBp, Address.FlatPtr);
488	}
489	int rc2 = DBGFR3BpClear(pDbgc->pUVM, iBp);
490	AssertRC(rc2);
491	}
492	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "Failed to set access breakpoint at %RGv", Address.FlatPtr);
493	}
494
495
496	/**
497	* @interface_method_impl{FNDBCCMD, The 'bc' command.}
498	*/
499	static DECLCALLBACK(int) dbgcCmdBrkClear(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
500	{
501	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
502
503	/*
504	* Enumerate the arguments.
505	*/
506	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
507	int rc = VINF_SUCCESS;
508	for (unsigned iArg = 0; iArg < cArgs && RT_SUCCESS(rc); iArg++)
509	{
510	if (paArgs[iArg].enmType != DBGCVAR_TYPE_STRING)
511	{
512	/* one */
513	uint32_t iBp = (uint32_t)paArgs[iArg].u.u64Number;
514	if (iBp == paArgs[iArg].u.u64Number)
515	{
516	int rc2 = DBGFR3BpClear(pUVM, iBp);
517	if (RT_FAILURE(rc2))
518	rc = DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc2, "DBGFR3BpClear(,%#x)", iBp);
519	if (RT_SUCCESS(rc2) \|\| rc2 == VERR_DBGF_BP_NOT_FOUND)
520	dbgcBpDelete(pDbgc, iBp);
521	}
522	else
523	rc = DBGCCmdHlpFail(pCmdHlp, pCmd, "Breakpoint id %RX64 is too large", paArgs[iArg].u.u64Number);
524	}
525	else if (!strcmp(paArgs[iArg].u.pszString, "all"))
526	{
527	/* all */
528	PDBGCBP pBp = pDbgc->pFirstBp;
529	while (pBp)
530	{
531	uint32_t iBp = pBp->iBp;
532	pBp = pBp->pNext;
533
534	int rc2 = DBGFR3BpClear(pUVM, iBp);
535	if (RT_FAILURE(rc2))
536	rc = DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc2, "DBGFR3BpClear(,%#x)", iBp);
537	if (RT_SUCCESS(rc2) \|\| rc2 == VERR_DBGF_BP_NOT_FOUND)
538	dbgcBpDelete(pDbgc, iBp);
539	}
540	}
541	else
542	rc = DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid argument '%s'", paArgs[iArg].u.pszString);
543	}
544	return rc;
545	}
546
547
548	/**
549	* @interface_method_impl{FNDBCCMD, The 'bd' command.}
550	*/
551	static DECLCALLBACK(int) dbgcCmdBrkDisable(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
552	{
553	/*
554	* Enumerate the arguments.
555	*/
556	int rc = VINF_SUCCESS;
557	for (unsigned iArg = 0; iArg < cArgs && RT_SUCCESS(rc); iArg++)
558	{
559	if (paArgs[iArg].enmType != DBGCVAR_TYPE_STRING)
560	{
561	/* one */
562	uint32_t iBp = (uint32_t)paArgs[iArg].u.u64Number;
563	if (iBp == paArgs[iArg].u.u64Number)
564	{
565	rc = DBGFR3BpDisable(pUVM, iBp);
566	if (RT_FAILURE(rc))
567	rc = DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "DBGFR3BpDisable failed for breakpoint %#x", iBp);
568	}
569	else
570	rc = DBGCCmdHlpFail(pCmdHlp, pCmd, "Breakpoint id %RX64 is too large", paArgs[iArg].u.u64Number);
571	}
572	else if (!strcmp(paArgs[iArg].u.pszString, "all"))
573	{
574	/* all */
575	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
576	for (PDBGCBP pBp = pDbgc->pFirstBp; pBp; pBp = pBp->pNext)
577	{
578	int rc2 = DBGFR3BpDisable(pUVM, pBp->iBp);
579	if (RT_FAILURE(rc2))
580	rc = DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc2, "DBGFR3BpDisable failed for breakpoint %#x", pBp->iBp);
581	}
582	}
583	else
584	rc = DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid argument '%s'", paArgs[iArg].u.pszString);
585	}
586	return rc;
587	}
588
589
590	/**
591	* @interface_method_impl{FNDBCCMD, The 'be' command.}
592	*/
593	static DECLCALLBACK(int) dbgcCmdBrkEnable(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
594	{
595	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
596
597	/*
598	* Enumerate the arguments.
599	*/
600	int rc = VINF_SUCCESS;
601	for (unsigned iArg = 0; iArg < cArgs && RT_SUCCESS(rc); iArg++)
602	{
603	if (paArgs[iArg].enmType != DBGCVAR_TYPE_STRING)
604	{
605	/* one */
606	uint32_t iBp = (uint32_t)paArgs[iArg].u.u64Number;
607	if (iBp == paArgs[iArg].u.u64Number)
608	{
609	rc = DBGFR3BpEnable(pUVM, iBp);
610	if (RT_FAILURE(rc))
611	rc = DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "DBGFR3BpEnable failed for breakpoint %#x", iBp);
612	}
613	else
614	rc = DBGCCmdHlpFail(pCmdHlp, pCmd, "Breakpoint id %RX64 is too large", paArgs[iArg].u.u64Number);
615	}
616	else if (!strcmp(paArgs[iArg].u.pszString, "all"))
617	{
618	/* all */
619	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
620	for (PDBGCBP pBp = pDbgc->pFirstBp; pBp; pBp = pBp->pNext)
621	{
622	int rc2 = DBGFR3BpEnable(pUVM, pBp->iBp);
623	if (RT_FAILURE(rc2))
624	rc = DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc2, "DBGFR3BpEnable failed for breakpoint %#x", pBp->iBp);
625	}
626	}
627	else
628	rc = DBGCCmdHlpFail(pCmdHlp, pCmd, "Invalid argument '%s'", paArgs[iArg].u.pszString);
629	}
630	return rc;
631	}
632
633
634	/**
635	* Breakpoint enumeration callback function.
636	*
637	* @returns VBox status code. Any failure will stop the enumeration.
638	* @param pUVM The user mode VM handle.
639	* @param pvUser The user argument.
640	* @param pBp Pointer to the breakpoint information. (readonly)
641	*/
642	static DECLCALLBACK(int) dbgcEnumBreakpointsCallback(PUVM pUVM, void *pvUser, PCDBGFBP pBp)
643	{
644	PDBGC pDbgc = (PDBGC)pvUser;
645	PDBGCBP pDbgcBp = dbgcBpGet(pDbgc, pBp->iBp);
646
647	/*
648	* BP type and size.
649	*/
650	char chType;
651	char cb = 1;
652	switch (pBp->enmType)
653	{
654	case DBGFBPTYPE_INT3:
655	chType = 'p';
656	break;
657	case DBGFBPTYPE_REG:
658	switch (pBp->u.Reg.fType)
659	{
660	case X86_DR7_RW_EO: chType = 'x'; break;
661	case X86_DR7_RW_WO: chType = 'w'; break;
662	case X86_DR7_RW_IO: chType = 'i'; break;
663	case X86_DR7_RW_RW: chType = 'r'; break;
664	default: chType = '?'; break;
665
666	}
667	cb = pBp->u.Reg.cb;
668	break;
669	case DBGFBPTYPE_REM:
670	chType = 'r';
671	break;
672	default:
673	chType = '?';
674	break;
675	}
676
677	DBGCCmdHlpPrintf(&pDbgc->CmdHlp, "%#4x %c %d %c %RGv %04RX64 (%04RX64 to ",
678	pBp->iBp, pBp->fEnabled ? 'e' : 'd', (int)cb, chType,
679	pBp->GCPtr, pBp->cHits, pBp->iHitTrigger);
680	if (pBp->iHitDisable == ~(uint64_t)0)
681	DBGCCmdHlpPrintf(&pDbgc->CmdHlp, "~0) ");
682	else
683	DBGCCmdHlpPrintf(&pDbgc->CmdHlp, "%04RX64)", pBp->iHitDisable);
684
685	/*
686	* Try resolve the address.
687	*/
688	RTDBGSYMBOL Sym;
689	RTINTPTR off;
690	DBGFADDRESS Addr;
691	int rc = DBGFR3AsSymbolByAddr(pUVM, pDbgc->hDbgAs, DBGFR3AddrFromFlat(pDbgc->pUVM, &Addr, pBp->GCPtr),
692	RTDBGSYMADDR_FLAGS_LESS_OR_EQUAL, &off, &Sym, NULL);
693	if (RT_SUCCESS(rc))
694	{
695	if (!off)
696	DBGCCmdHlpPrintf(&pDbgc->CmdHlp, "%s", Sym.szName);
697	else if (off > 0)
698	DBGCCmdHlpPrintf(&pDbgc->CmdHlp, "%s+%RGv", Sym.szName, off);
699	else
700	DBGCCmdHlpPrintf(&pDbgc->CmdHlp, "%s-%RGv", Sym.szName, -off);
701	}
702
703	/*
704	* The commands.
705	*/
706	if (pDbgcBp)
707	{
708	if (pDbgcBp->cchCmd)
709	DBGCCmdHlpPrintf(&pDbgc->CmdHlp, "\n cmds: '%s'\n", pDbgcBp->szCmd);
710	else
711	DBGCCmdHlpPrintf(&pDbgc->CmdHlp, "\n");
712	}
713	else
714	DBGCCmdHlpPrintf(&pDbgc->CmdHlp, " [unknown bp]\n");
715
716	return VINF_SUCCESS;
717	}
718
719
720	/**
721	* @interface_method_impl{FNDBCCMD, The 'bl' command.}
722	*/
723	static DECLCALLBACK(int) dbgcCmdBrkList(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
724	{
725	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
726	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, -1, cArgs == 0);
727	NOREF(paArgs);
728
729	/*
730	* Enumerate the breakpoints.
731	*/
732	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
733	int rc = DBGFR3BpEnum(pUVM, dbgcEnumBreakpointsCallback, pDbgc);
734	if (RT_FAILURE(rc))
735	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "DBGFR3BpEnum");
736	return rc;
737	}
738
739
740	/**
741	* @interface_method_impl{FNDBCCMD, The 'bp' command.}
742	*/
743	static DECLCALLBACK(int) dbgcCmdBrkSet(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
744	{
745	/*
746	* Convert the pointer to a DBGF address.
747	*/
748	DBGFADDRESS Address;
749	int rc = DBGCCmdHlpVarToDbgfAddr(pCmdHlp, &paArgs[0], &Address);
750	if (RT_FAILURE(rc))
751	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "DBGCCmdHlpVarToDbgfAddr(,'%DV',)", &paArgs[0]);
752
753	/*
754	* Pick out the optional arguments.
755	*/
756	uint64_t iHitTrigger = 0;
757	uint64_t iHitDisable = ~0;
758	const char *pszCmds = NULL;
759	unsigned iArg = 1;
760	if (iArg < cArgs && paArgs[iArg].enmType == DBGCVAR_TYPE_NUMBER)
761	{
762	iHitTrigger = paArgs[iArg].u.u64Number;
763	iArg++;
764	if (iArg < cArgs && paArgs[iArg].enmType == DBGCVAR_TYPE_NUMBER)
765	{
766	iHitDisable = paArgs[iArg].u.u64Number;
767	iArg++;
768	}
769	}
770	if (iArg < cArgs && paArgs[iArg].enmType == DBGCVAR_TYPE_STRING)
771	{
772	pszCmds = paArgs[iArg].u.pszString;
773	iArg++;
774	}
775
776	/*
777	* Try set the breakpoint.
778	*/
779	uint32_t iBp;
780	rc = DBGFR3BpSet(pUVM, &Address, iHitTrigger, iHitDisable, &iBp);
781	if (RT_SUCCESS(rc))
782	{
783	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
784	rc = dbgcBpAdd(pDbgc, iBp, pszCmds);
785	if (RT_SUCCESS(rc))
786	return DBGCCmdHlpPrintf(pCmdHlp, "Set breakpoint %u at %RGv\n", iBp, Address.FlatPtr);
787	if (rc == VERR_DBGC_BP_EXISTS)
788	{
789	rc = dbgcBpUpdate(pDbgc, iBp, pszCmds);
790	if (RT_SUCCESS(rc))
791	return DBGCCmdHlpPrintf(pCmdHlp, "Updated breakpoint %u at %RGv\n", iBp, Address.FlatPtr);
792	}
793	int rc2 = DBGFR3BpClear(pDbgc->pUVM, iBp);
794	AssertRC(rc2);
795	}
796	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "Failed to set breakpoint at %RGv", Address.FlatPtr);
797	}
798
799
800	/**
801	* @interface_method_impl{FNDBCCMD, The 'br' command.}
802	*/
803	static DECLCALLBACK(int) dbgcCmdBrkREM(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
804	{
805	/*
806	* Convert the pointer to a DBGF address.
807	*/
808	DBGFADDRESS Address;
809	int rc = DBGCCmdHlpVarToDbgfAddr(pCmdHlp, &paArgs[0], &Address);
810	if (RT_FAILURE(rc))
811	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "DBGCCmdHlpVarToDbgfAddr(,'%DV',)", &paArgs[0]);
812
813	/*
814	* Pick out the optional arguments.
815	*/
816	uint64_t iHitTrigger = 0;
817	uint64_t iHitDisable = ~0;
818	const char *pszCmds = NULL;
819	unsigned iArg = 1;
820	if (iArg < cArgs && paArgs[iArg].enmType == DBGCVAR_TYPE_NUMBER)
821	{
822	iHitTrigger = paArgs[iArg].u.u64Number;
823	iArg++;
824	if (iArg < cArgs && paArgs[iArg].enmType == DBGCVAR_TYPE_NUMBER)
825	{
826	iHitDisable = paArgs[iArg].u.u64Number;
827	iArg++;
828	}
829	}
830	if (iArg < cArgs && paArgs[iArg].enmType == DBGCVAR_TYPE_STRING)
831	{
832	pszCmds = paArgs[iArg].u.pszString;
833	iArg++;
834	}
835
836	/*
837	* Try set the breakpoint.
838	*/
839	uint32_t iBp;
840	rc = DBGFR3BpSetREM(pUVM, &Address, iHitTrigger, iHitDisable, &iBp);
841	if (RT_SUCCESS(rc))
842	{
843	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
844	rc = dbgcBpAdd(pDbgc, iBp, pszCmds);
845	if (RT_SUCCESS(rc))
846	return DBGCCmdHlpPrintf(pCmdHlp, "Set REM breakpoint %u at %RGv\n", iBp, Address.FlatPtr);
847	if (rc == VERR_DBGC_BP_EXISTS)
848	{
849	rc = dbgcBpUpdate(pDbgc, iBp, pszCmds);
850	if (RT_SUCCESS(rc))
851	return DBGCCmdHlpPrintf(pCmdHlp, "Updated REM breakpoint %u at %RGv\n", iBp, Address.FlatPtr);
852	}
853	int rc2 = DBGFR3BpClear(pDbgc->pUVM, iBp);
854	AssertRC(rc2);
855	}
856	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "Failed to set REM breakpoint at %RGv", Address.FlatPtr);
857	}
858
859
860	/**
861	* Helps the unassmble ('u') command display symbols it starts at and passes.
862	*
863	* @param pUVM The user mode VM handle.
864	* @param pCmdHlp The command helpers for printing via.
865	* @param hDbgAs The address space to look up addresses in.
866	* @param pAddress The current address.
867	* @param pcbCallAgain Where to return the distance to the next check (in
868	* instruction bytes).
869	*/
870	static void dbgcCmdUnassambleHelpListNear(PUVM pUVM, PDBGCCMDHLP pCmdHlp, RTDBGAS hDbgAs, PCDBGFADDRESS pAddress,
871	PRTUINTPTR pcbCallAgain)
872	{
873	RTDBGSYMBOL Symbol;
874	RTGCINTPTR offDispSym;
875	int rc = DBGFR3AsSymbolByAddr(pUVM, hDbgAs, pAddress, RTDBGSYMADDR_FLAGS_LESS_OR_EQUAL, &offDispSym, &Symbol, NULL);
876	if (RT_FAILURE(rc) \|\| offDispSym > _1G)
877	rc = DBGFR3AsSymbolByAddr(pUVM, hDbgAs, pAddress, RTDBGSYMADDR_FLAGS_GREATER_OR_EQUAL, &offDispSym, &Symbol, NULL);
878	if (RT_SUCCESS(rc) && offDispSym < _1G)
879	{
880	if (!offDispSym)
881	{
882	DBGCCmdHlpPrintf(pCmdHlp, "%s:\n", Symbol.szName);
883	*pcbCallAgain = Symbol.cb;
884	}
885	else if (offDispSym > 0)
886	{
887	DBGCCmdHlpPrintf(pCmdHlp, "%s+%#llx:\n", Symbol.szName, (uint64_t)offDispSym);
888	*pcbCallAgain = Symbol.cb > (RTGCUINTPTR)offDispSym ? Symbol.cb - (RTGCUINTPTR)offDispSym : 1;
889	}
890	else
891	{
892	DBGCCmdHlpPrintf(pCmdHlp, "%s-%#llx:\n", Symbol.szName, (uint64_t)-offDispSym);
893	*pcbCallAgain = (RTGCUINTPTR)-offDispSym + Symbol.cb;
894	}
895	}
896	else
897	*pcbCallAgain = UINT32_MAX;
898	}
899
900
901	/**
902	* @interface_method_impl{FNDBCCMD, The 'u' command.}
903	*/
904	static DECLCALLBACK(int) dbgcCmdUnassemble(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
905	{
906	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
907
908	/*
909	* Validate input.
910	*/
911	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
912	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, -1, cArgs <= 1);
913	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs == 0 \|\| DBGCVAR_ISPOINTER(paArgs[0].enmType));
914
915	if (!cArgs && !DBGCVAR_ISPOINTER(pDbgc->DisasmPos.enmType))
916	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Don't know where to start disassembling");
917
918	/*
919	* Check the desired mode.
920	*/
921	unsigned fFlags = DBGF_DISAS_FLAGS_NO_ADDRESS \| DBGF_DISAS_FLAGS_UNPATCHED_BYTES \| DBGF_DISAS_FLAGS_ANNOTATE_PATCHED;
922	switch (pCmd->pszCmd[1])
923	{
924	default: AssertFailed();
925	case '\0': fFlags \|= DBGF_DISAS_FLAGS_DEFAULT_MODE; break;
926	case '6': fFlags \|= DBGF_DISAS_FLAGS_64BIT_MODE; break;
927	case '3': fFlags \|= DBGF_DISAS_FLAGS_32BIT_MODE; break;
928	case '1': fFlags \|= DBGF_DISAS_FLAGS_16BIT_MODE; break;
929	case 'v': fFlags \|= DBGF_DISAS_FLAGS_16BIT_REAL_MODE; break;
930	}
931
932	/** @todo should use DBGFADDRESS for everything */
933
934	/*
935	* Find address.
936	*/
937	if (!cArgs)
938	{
939	if (!DBGCVAR_ISPOINTER(pDbgc->DisasmPos.enmType))
940	{
941	/** @todo Batch query CS, RIP & CPU mode. */
942	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, pDbgc->idCpu);
943	if ( pDbgc->fRegCtxGuest
944	&& CPUMIsGuestIn64BitCode(pVCpu))
945	{
946	pDbgc->DisasmPos.enmType = DBGCVAR_TYPE_GC_FLAT;
947	pDbgc->SourcePos.u.GCFlat = CPUMGetGuestRIP(pVCpu);
948	}
949	else
950	{
951	pDbgc->DisasmPos.enmType = DBGCVAR_TYPE_GC_FAR;
952	pDbgc->SourcePos.u.GCFar.off = pDbgc->fRegCtxGuest ? CPUMGetGuestEIP(pVCpu) : CPUMGetHyperEIP(pVCpu);
953	pDbgc->SourcePos.u.GCFar.sel = pDbgc->fRegCtxGuest ? CPUMGetGuestCS(pVCpu) : CPUMGetHyperCS(pVCpu);
954	}
955
956	if (pDbgc->fRegCtxGuest)
957	fFlags \|= DBGF_DISAS_FLAGS_CURRENT_GUEST;
958	else
959	fFlags \|= DBGF_DISAS_FLAGS_CURRENT_HYPER \| DBGF_DISAS_FLAGS_HYPER;
960	}
961	pDbgc->DisasmPos.enmRangeType = DBGCVAR_RANGE_NONE;
962	}
963	else
964	pDbgc->DisasmPos = paArgs[0];
965	pDbgc->pLastPos = &pDbgc->DisasmPos;
966
967	/*
968	* Range.
969	*/
970	switch (pDbgc->DisasmPos.enmRangeType)
971	{
972	case DBGCVAR_RANGE_NONE:
973	pDbgc->DisasmPos.enmRangeType = DBGCVAR_RANGE_ELEMENTS;
974	pDbgc->DisasmPos.u64Range = 10;
975	break;
976
977	case DBGCVAR_RANGE_ELEMENTS:
978	if (pDbgc->DisasmPos.u64Range > 2048)
979	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Too many lines requested. Max is 2048 lines");
980	break;
981
982	case DBGCVAR_RANGE_BYTES:
983	if (pDbgc->DisasmPos.u64Range > 65536)
984	return DBGCCmdHlpFail(pCmdHlp, pCmd, "The requested range is too big. Max is 64KB");
985	break;
986
987	default:
988	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Unknown range type %d", pDbgc->DisasmPos.enmRangeType);
989	}
990
991	/*
992	* Convert physical and host addresses to guest addresses.
993	*/
994	RTDBGAS hDbgAs = pDbgc->hDbgAs;
995	int rc;
996	switch (pDbgc->DisasmPos.enmType)
997	{
998	case DBGCVAR_TYPE_GC_FLAT:
999	case DBGCVAR_TYPE_GC_FAR:
1000	break;
1001	case DBGCVAR_TYPE_GC_PHYS:
1002	hDbgAs = DBGF_AS_PHYS;
1003	case DBGCVAR_TYPE_HC_FLAT:
1004	case DBGCVAR_TYPE_HC_PHYS:
1005	{
1006	DBGCVAR VarTmp;
1007	rc = DBGCCmdHlpEval(pCmdHlp, &VarTmp, "%%(%Dv)", &pDbgc->DisasmPos);
1008	if (RT_FAILURE(rc))
1009	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "failed to evaluate '%%(%Dv)'", &pDbgc->DisasmPos);
1010	pDbgc->DisasmPos = VarTmp;
1011	break;
1012	}
1013	default: AssertFailed(); break;
1014	}
1015
1016	DBGFADDRESS CurAddr;
1017	rc = DBGCCmdHlpVarToDbgfAddr(pCmdHlp, &pDbgc->DisasmPos, &CurAddr);
1018	if (RT_FAILURE(rc))
1019	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "DBGCCmdHlpVarToDbgfAddr failed on '%Dv'", &pDbgc->DisasmPos);
1020
1021	if (CurAddr.fFlags & DBGFADDRESS_FLAGS_HMA)
1022	fFlags \|= DBGF_DISAS_FLAGS_HYPER; /* This crap is due to not using DBGFADDRESS as DBGFR3Disas* input. */
1023
1024	/*
1025	* Figure out where we are and display it. Also calculate when we need to
1026	* check for a new symbol if possible.
1027	*/
1028	RTGCUINTPTR cbCheckSymbol;
1029	dbgcCmdUnassambleHelpListNear(pUVM, pCmdHlp, hDbgAs, &CurAddr, &cbCheckSymbol);
1030
1031	/*
1032	* Do the disassembling.
1033	*/
1034	unsigned cTries = 32;
1035	int iRangeLeft = (int)pDbgc->DisasmPos.u64Range;
1036	if (iRangeLeft == 0) /* kludge for 'r'. */
1037	iRangeLeft = -1;
1038	for (;;)
1039	{
1040	/*
1041	* Disassemble the instruction.
1042	*/
1043	char szDis[256];
1044	uint32_t cbInstr = 1;
1045	if (pDbgc->DisasmPos.enmType == DBGCVAR_TYPE_GC_FLAT)
1046	rc = DBGFR3DisasInstrEx(pUVM, pDbgc->idCpu, DBGF_SEL_FLAT, pDbgc->DisasmPos.u.GCFlat, fFlags,
1047	&szDis[0], sizeof(szDis), &cbInstr);
1048	else
1049	rc = DBGFR3DisasInstrEx(pUVM, pDbgc->idCpu, pDbgc->DisasmPos.u.GCFar.sel, pDbgc->DisasmPos.u.GCFar.off, fFlags,
1050	&szDis[0], sizeof(szDis), &cbInstr);
1051	if (RT_SUCCESS(rc))
1052	{
1053	/* print it */
1054	rc = DBGCCmdHlpPrintf(pCmdHlp, "%-16DV %s\n", &pDbgc->DisasmPos, &szDis[0]);
1055	if (RT_FAILURE(rc))
1056	return rc;
1057	}
1058	else
1059	{
1060	/* bitch. */
1061	int rc2 = DBGCCmdHlpPrintf(pCmdHlp, "Failed to disassemble instruction, skipping one byte.\n");
1062	if (RT_FAILURE(rc2))
1063	return rc2;
1064	if (cTries-- > 0)
1065	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "Too many disassembly failures. Giving up");
1066	cbInstr = 1;
1067	}
1068
1069	/* advance */
1070	if (iRangeLeft < 0) /* 'r' */
1071	break;
1072	if (pDbgc->DisasmPos.enmRangeType == DBGCVAR_RANGE_ELEMENTS)
1073	iRangeLeft--;
1074	else
1075	iRangeLeft -= cbInstr;
1076	rc = DBGCCmdHlpEval(pCmdHlp, &pDbgc->DisasmPos, "(%Dv) + %x", &pDbgc->DisasmPos, cbInstr);
1077	if (RT_FAILURE(rc))
1078	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "DBGCCmdHlpEval(,,'(%Dv) + %x')", &pDbgc->DisasmPos, cbInstr);
1079	if (iRangeLeft <= 0)
1080	break;
1081	fFlags &= ~(DBGF_DISAS_FLAGS_CURRENT_GUEST \| DBGF_DISAS_FLAGS_CURRENT_HYPER);
1082
1083	/* Print next symbol? */
1084	if (cbCheckSymbol <= cbInstr)
1085	{
1086	rc = DBGCCmdHlpVarToDbgfAddr(pCmdHlp, &pDbgc->DisasmPos, &CurAddr);
1087	if (RT_SUCCESS(rc))
1088	dbgcCmdUnassambleHelpListNear(pUVM, pCmdHlp, hDbgAs, &CurAddr, &cbCheckSymbol);
1089	else
1090	cbCheckSymbol = UINT32_MAX;
1091	}
1092	else
1093	cbCheckSymbol -= cbInstr;
1094	}
1095
1096	NOREF(pCmd);
1097	return VINF_SUCCESS;
1098	}
1099
1100
1101	/**
1102	* @interface_method_impl{FNDBCCMD, The 'ls' command.}
1103	*/
1104	static DECLCALLBACK(int) dbgcCmdListSource(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
1105	{
1106	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
1107
1108	/*
1109	* Validate input.
1110	*/
1111	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs <= 1);
1112	if (cArgs == 1)
1113	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, DBGCVAR_ISPOINTER(paArgs[0].enmType));
1114	if (!pUVM && !cArgs && !DBGCVAR_ISPOINTER(pDbgc->SourcePos.enmType))
1115	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Don't know where to start listing...");
1116	if (!pUVM && cArgs && DBGCVAR_ISGCPOINTER(paArgs[0].enmType))
1117	return DBGCCmdHlpFail(pCmdHlp, pCmd, "GC address but no VM");
1118
1119	/*
1120	* Find address.
1121	*/
1122	if (!cArgs)
1123	{
1124	if (!DBGCVAR_ISPOINTER(pDbgc->SourcePos.enmType))
1125	{
1126	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, pDbgc->idCpu);
1127	pDbgc->SourcePos.enmType = DBGCVAR_TYPE_GC_FAR;
1128	pDbgc->SourcePos.u.GCFar.off = pDbgc->fRegCtxGuest ? CPUMGetGuestEIP(pVCpu) : CPUMGetHyperEIP(pVCpu);
1129	pDbgc->SourcePos.u.GCFar.sel = pDbgc->fRegCtxGuest ? CPUMGetGuestCS(pVCpu) : CPUMGetHyperCS(pVCpu);
1130	}
1131	pDbgc->SourcePos.enmRangeType = DBGCVAR_RANGE_NONE;
1132	}
1133	else
1134	pDbgc->SourcePos = paArgs[0];
1135	pDbgc->pLastPos = &pDbgc->SourcePos;
1136
1137	/*
1138	* Ensure the source address is flat GC.
1139	*/
1140	switch (pDbgc->SourcePos.enmType)
1141	{
1142	case DBGCVAR_TYPE_GC_FLAT:
1143	break;
1144	case DBGCVAR_TYPE_GC_PHYS:
1145	case DBGCVAR_TYPE_GC_FAR:
1146	case DBGCVAR_TYPE_HC_FLAT:
1147	case DBGCVAR_TYPE_HC_PHYS:
1148	{
1149	int rc = DBGCCmdHlpEval(pCmdHlp, &pDbgc->SourcePos, "%%(%Dv)", &pDbgc->SourcePos);
1150	if (RT_FAILURE(rc))
1151	return DBGCCmdHlpPrintf(pCmdHlp, "error: Invalid address or address type. (rc=%d)\n", rc);
1152	break;
1153	}
1154	default: AssertFailed(); break;
1155	}
1156
1157	/*
1158	* Range.
1159	*/
1160	switch (pDbgc->SourcePos.enmRangeType)
1161	{
1162	case DBGCVAR_RANGE_NONE:
1163	pDbgc->SourcePos.enmRangeType = DBGCVAR_RANGE_ELEMENTS;
1164	pDbgc->SourcePos.u64Range = 10;
1165	break;
1166
1167	case DBGCVAR_RANGE_ELEMENTS:
1168	if (pDbgc->SourcePos.u64Range > 2048)
1169	return DBGCCmdHlpPrintf(pCmdHlp, "error: Too many lines requested. Max is 2048 lines.\n");
1170	break;
1171
1172	case DBGCVAR_RANGE_BYTES:
1173	if (pDbgc->SourcePos.u64Range > 65536)
1174	return DBGCCmdHlpPrintf(pCmdHlp, "error: The requested range is too big. Max is 64KB.\n");
1175	break;
1176
1177	default:
1178	return DBGCCmdHlpPrintf(pCmdHlp, "internal error: Unknown range type %d.\n", pDbgc->SourcePos.enmRangeType);
1179	}
1180
1181	/*
1182	* Do the disassembling.
1183	*/
1184	bool fFirst = 1;
1185	RTDBGLINE LinePrev = { 0, 0, 0, 0, 0, "" };
1186	int iRangeLeft = (int)pDbgc->SourcePos.u64Range;
1187	if (iRangeLeft == 0) /* kludge for 'r'. */
1188	iRangeLeft = -1;
1189	for (;;)
1190	{
1191	/*
1192	* Get line info.
1193	*/
1194	RTDBGLINE Line;
1195	RTGCINTPTR off;
1196	DBGFADDRESS SourcePosAddr;
1197	int rc = DBGCCmdHlpVarToDbgfAddr(pCmdHlp, &pDbgc->SourcePos, &SourcePosAddr);
1198	if (RT_FAILURE(rc))
1199	return DBGCCmdHlpFailRc(pCmdHlp, pCmd, rc, "DBGCCmdHlpVarToDbgfAddr(,%Dv)", &pDbgc->SourcePos);
1200	rc = DBGFR3AsLineByAddr(pUVM, pDbgc->hDbgAs, &SourcePosAddr, &off, &Line, NULL);
1201	if (RT_FAILURE(rc))
1202	return VINF_SUCCESS;
1203
1204	unsigned cLines = 0;
1205	if (memcmp(&Line, &LinePrev, sizeof(Line)))
1206	{
1207	/*
1208	* Print filenamename
1209	*/
1210	if (!fFirst && strcmp(Line.szFilename, LinePrev.szFilename))
1211	fFirst = true;
1212	if (fFirst)
1213	{
1214	rc = DBGCCmdHlpPrintf(pCmdHlp, "[%s @ %d]\n", Line.szFilename, Line.uLineNo);
1215	if (RT_FAILURE(rc))
1216	return rc;
1217	}
1218
1219	/*
1220	* Try open the file and read the line.
1221	*/
1222	FILE *phFile = fopen(Line.szFilename, "r");
1223	if (phFile)
1224	{
1225	/* Skip ahead to the desired line. */
1226	char szLine[4096];
1227	unsigned cBefore = fFirst ? RT_MIN(2, Line.uLineNo - 1) : Line.uLineNo - LinePrev.uLineNo - 1;
1228	if (cBefore > 7)
1229	cBefore = 0;
1230	unsigned cLeft = Line.uLineNo - cBefore;
1231	while (cLeft > 0)
1232	{
1233	szLine[0] = '\0';
1234	if (!fgets(szLine, sizeof(szLine), phFile))
1235	break;
1236	cLeft--;
1237	}
1238	if (!cLeft)
1239	{
1240	/* print the before lines */
1241	for (;;)
1242	{
1243	size_t cch = strlen(szLine);
1244	while (cch > 0 && (szLine[cch - 1] == '\r' \|\| szLine[cch - 1] == '\n' \|\| RT_C_IS_SPACE(szLine[cch - 1])) )
1245	szLine[--cch] = '\0';
1246	if (cBefore-- <= 0)
1247	break;
1248
1249	rc = DBGCCmdHlpPrintf(pCmdHlp, " %4d: %s\n", Line.uLineNo - cBefore - 1, szLine);
1250	szLine[0] = '\0';
1251	fgets(szLine, sizeof(szLine), phFile);
1252	cLines++;
1253	}
1254	/* print the actual line */
1255	rc = DBGCCmdHlpPrintf(pCmdHlp, "%08llx %4d: %s\n", Line.Address, Line.uLineNo, szLine);
1256	}
1257	fclose(phFile);
1258	if (RT_FAILURE(rc))
1259	return rc;
1260	fFirst = false;
1261	}
1262	else
1263	return DBGCCmdHlpPrintf(pCmdHlp, "Warning: couldn't open source file '%s'\n", Line.szFilename);
1264
1265	LinePrev = Line;
1266	}
1267
1268
1269	/*
1270	* Advance
1271	*/
1272	if (iRangeLeft < 0) /* 'r' */
1273	break;
1274	if (pDbgc->SourcePos.enmRangeType == DBGCVAR_RANGE_ELEMENTS)
1275	iRangeLeft -= cLines;
1276	else
1277	iRangeLeft -= 1;
1278	rc = DBGCCmdHlpEval(pCmdHlp, &pDbgc->SourcePos, "(%Dv) + %x", &pDbgc->SourcePos, 1);
1279	if (RT_FAILURE(rc))
1280	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "Expression: (%Dv) + %x\n", &pDbgc->SourcePos, 1);
1281	if (iRangeLeft <= 0)
1282	break;
1283	}
1284
1285	NOREF(pCmd);
1286	return 0;
1287	}
1288
1289
1290	/**
1291	* @interface_method_impl{FNDBCCMD, The 'r' command.}
1292	*/
1293	static DECLCALLBACK(int) dbgcCmdReg(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
1294	{
1295	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
1296	if (!pDbgc->fRegCtxGuest)
1297	return dbgcCmdRegHyper(pCmd, pCmdHlp, pUVM, paArgs, cArgs);
1298	return dbgcCmdRegGuest(pCmd, pCmdHlp, pUVM, paArgs, cArgs);
1299	}
1300
1301
1302	/**
1303	* @interface_method_impl{FNDBCCMD, Common worker for the dbgcCmdReg*()
1304	* commands.}
1305	*/
1306	static DECLCALLBACK(int) dbgcCmdRegCommon(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs,
1307	const char *pszPrefix)
1308	{
1309	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
1310	Assert(cArgs == 1 \|\| cArgs == 2); /* cArgs == 0 is handled by the caller */
1311	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs == 1 \|\| cArgs == 2);
1312	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, paArgs[0].enmType == DBGCVAR_TYPE_STRING
1313	\|\| paArgs[0].enmType == DBGCVAR_TYPE_SYMBOL);
1314
1315	/*
1316	* Parse the register name and kind.
1317	*/
1318	const char *pszReg = paArgs[0].u.pszString;
1319	if (*pszReg == '@')
1320	pszReg++;
1321	VMCPUID idCpu = pDbgc->idCpu;
1322	if (*pszPrefix)
1323	idCpu \|= DBGFREG_HYPER_VMCPUID;
1324	if (*pszReg == '.')
1325	{
1326	pszReg++;
1327	idCpu \|= DBGFREG_HYPER_VMCPUID;
1328	}
1329	const char * const pszActualPrefix = idCpu & DBGFREG_HYPER_VMCPUID ? "." : "";
1330
1331	/*
1332	* Query the register type & value (the setter needs the type).
1333	*/
1334	DBGFREGVALTYPE enmType;
1335	DBGFREGVAL Value;
1336	int rc = DBGFR3RegNmQuery(pUVM, idCpu, pszReg, &Value, &enmType);
1337	if (RT_FAILURE(rc))
1338	{
1339	if (rc == VERR_DBGF_REGISTER_NOT_FOUND)
1340	return DBGCCmdHlpVBoxError(pCmdHlp, VERR_INVALID_PARAMETER, "Unknown register: '%s%s'.\n",
1341	pszActualPrefix, pszReg);
1342	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "DBGFR3RegNmQuery failed querying '%s%s': %Rrc.\n",
1343	pszActualPrefix, pszReg, rc);
1344	}
1345	if (cArgs == 1)
1346	{
1347	/*
1348	* Show the register.
1349	*/
1350	char szValue[160];
1351	rc = DBGFR3RegFormatValue(szValue, sizeof(szValue), &Value, enmType, true /fSpecial/);
1352	if (RT_SUCCESS(rc))
1353	rc = DBGCCmdHlpPrintf(pCmdHlp, "%s%s=%s\n", pszActualPrefix, pszReg, szValue);
1354	else
1355	rc = DBGCCmdHlpVBoxError(pCmdHlp, rc, "DBGFR3RegFormatValue failed: %Rrc.\n", rc);
1356	}
1357	else if (cArgs == 2)
1358	{
1359	/*
1360	* Modify the register.
1361	*/
1362	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 1, paArgs[1].enmType == DBGCVAR_TYPE_STRING
1363	\|\| paArgs[1].enmType == DBGCVAR_TYPE_SYMBOL);
1364	if (enmType != DBGFREGVALTYPE_DTR)
1365	{
1366	enmType = DBGFREGVALTYPE_U64;
1367	rc = DBGCCmdHlpVarToNumber(pCmdHlp, &paArgs[1], &Value.u64);
1368	}
1369	else
1370	{
1371	enmType = DBGFREGVALTYPE_DTR;
1372	rc = DBGCCmdHlpVarToNumber(pCmdHlp, &paArgs[1], &Value.dtr.u64Base);
1373	if (RT_SUCCESS(rc) && paArgs[1].enmRangeType != DBGCVAR_RANGE_NONE)
1374	Value.dtr.u32Limit = (uint32_t)paArgs[1].u64Range;
1375	}
1376	if (RT_SUCCESS(rc))
1377	{
1378	rc = DBGFR3RegNmSet(pUVM, idCpu, pszReg, &Value, enmType);
1379	if (RT_FAILURE(rc))
1380	rc = DBGCCmdHlpVBoxError(pCmdHlp, rc, "DBGFR3RegNmSet failed settings '%s%s': %Rrc\n",
1381	pszActualPrefix, pszReg, rc);
1382	}
1383	else
1384	rc = DBGCCmdHlpVBoxError(pCmdHlp, rc, "DBGFR3RegFormatValue failed: %Rrc.\n", rc);
1385	}
1386	else
1387	{
1388	NOREF(pCmd); NOREF(paArgs);
1389	rc = DBGCCmdHlpPrintf(pCmdHlp, "Huh? cArgs=%d Expected 0, 1 or 2!\n", cArgs);
1390	}
1391	return rc;
1392	}
1393
1394
1395	/**
1396	* @interface_method_impl{FNDBCCMD,
1397	* The 'rg', 'rg64' and 'rg32' commands, worker for 'r'.}
1398	*/
1399	static DECLCALLBACK(int) dbgcCmdRegGuest(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
1400	{
1401	/*
1402	* Show all registers our selves.
1403	*/
1404	if (cArgs == 0)
1405	{
1406	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
1407	bool const f64BitMode = !strcmp(pCmd->pszCmd, "rg64")
1408	\|\| ( strcmp(pCmd->pszCmd, "rg32") != 0
1409	&& DBGFR3CpuIsIn64BitCode(pUVM, pDbgc->idCpu));
1410	char szDisAndRegs[8192];
1411	int rc;
1412
1413	if (pDbgc->fRegTerse)
1414	{
1415	if (f64BitMode)
1416	rc = DBGFR3RegPrintf(pUVM, pDbgc->idCpu, &szDisAndRegs[0], sizeof(szDisAndRegs),
1417	"u %016VR{rip} L 0\n"
1418	"rax=%016VR{rax} rbx=%016VR{rbx} rcx=%016VR{rcx} rdx=%016VR{rdx}\n"
1419	"rsi=%016VR{rsi} rdi=%016VR{rdi} r8 =%016VR{r8} r9 =%016VR{r9}\n"
1420	"r10=%016VR{r10} r11=%016VR{r11} r12=%016VR{r12} r13=%016VR{r13}\n"
1421	"r14=%016VR{r14} r15=%016VR{r15} %VRF{rflags}\n"
1422	"rip=%016VR{rip} rsp=%016VR{rsp} rbp=%016VR{rbp}\n"
1423	"cs=%04VR{cs} ds=%04VR{ds} es=%04VR{es} fs=%04VR{fs} gs=%04VR{gs} ss=%04VR{ss} rflags=%08VR{rflags}\n");
1424	else
1425	rc = DBGFR3RegPrintf(pUVM, pDbgc->idCpu, szDisAndRegs, sizeof(szDisAndRegs),
1426	"u %04VR{cs}:%08VR{eip} L 0\n"
1427	"eax=%08VR{eax} ebx=%08VR{ebx} ecx=%08VR{ecx} edx=%08VR{edx} esi=%08VR{esi} edi=%08VR{edi}\n"
1428	"eip=%08VR{eip} esp=%08VR{esp} ebp=%08VR{ebp} %VRF{eflags}\n"
1429	"cs=%04VR{cs} ds=%04VR{ds} es=%04VR{es} fs=%04VR{fs} gs=%04VR{gs} ss=%04VR{ss} eflags=%08VR{eflags}\n");
1430	}
1431	else
1432	{
1433	if (f64BitMode)
1434	rc = DBGFR3RegPrintf(pUVM, pDbgc->idCpu, &szDisAndRegs[0], sizeof(szDisAndRegs),
1435	"u %016VR{rip} L 0\n"
1436	"rax=%016VR{rax} rbx=%016VR{rbx} rcx=%016VR{rcx} rdx=%016VR{rdx}\n"
1437	"rsi=%016VR{rsi} rdi=%016VR{rdi} r8 =%016VR{r8} r9 =%016VR{r9}\n"
1438	"r10=%016VR{r10} r11=%016VR{r11} r12=%016VR{r12} r13=%016VR{r13}\n"
1439	"r14=%016VR{r14} r15=%016VR{r15} %VRF{rflags}\n"
1440	"rip=%016VR{rip} rsp=%016VR{rsp} rbp=%016VR{rbp}\n"
1441	"cs={%04VR{cs} base=%016VR{cs_base} limit=%08VR{cs_lim} flags=%04VR{cs_attr}} cr0=%016VR{cr0}\n"
1442	"ds={%04VR{ds} base=%016VR{ds_base} limit=%08VR{ds_lim} flags=%04VR{ds_attr}} cr2=%016VR{cr2}\n"
1443	"es={%04VR{es} base=%016VR{es_base} limit=%08VR{es_lim} flags=%04VR{es_attr}} cr3=%016VR{cr3}\n"
1444	"fs={%04VR{fs} base=%016VR{fs_base} limit=%08VR{fs_lim} flags=%04VR{fs_attr}} cr4=%016VR{cr4}\n"
1445	"gs={%04VR{gs} base=%016VR{gs_base} limit=%08VR{gs_lim} flags=%04VR{gs_attr}} cr8=%016VR{cr8}\n"
1446	"ss={%04VR{ss} base=%016VR{ss_base} limit=%08VR{ss_lim} flags=%04VR{ss_attr}}\n"
1447	"dr0=%016VR{dr0} dr1=%016VR{dr1} dr2=%016VR{dr2} dr3=%016VR{dr3}\n"
1448	"dr6=%016VR{dr6} dr7=%016VR{dr7}\n"
1449	"gdtr=%016VR{gdtr_base}:%04VR{gdtr_lim} idtr=%016VR{idtr_base}:%04VR{idtr_lim} rflags=%08VR{rflags}\n"
1450	"ldtr={%04VR{ldtr} base=%016VR{ldtr_base} limit=%08VR{ldtr_lim} flags=%08VR{ldtr_attr}}\n"
1451	"tr ={%04VR{tr} base=%016VR{tr_base} limit=%08VR{tr_lim} flags=%08VR{tr_attr}}\n"
1452	" sysenter={cs=%04VR{sysenter_cs} eip=%08VR{sysenter_eip} esp=%08VR{sysenter_esp}}\n"
1453	" efer=%016VR{efer}\n"
1454	" pat=%016VR{pat}\n"
1455	" sf_mask=%016VR{sf_mask}\n"
1456	"krnl_gs_base=%016VR{krnl_gs_base}\n"
1457	" lstar=%016VR{lstar}\n"
1458	" star=%016VR{star} cstar=%016VR{cstar}\n"
1459	"fcw=%04VR{fcw} fsw=%04VR{fsw} ftw=%04VR{ftw} mxcsr=%04VR{mxcsr} mxcsr_mask=%04VR{mxcsr_mask}\n"
1460	);
1461	else
1462	rc = DBGFR3RegPrintf(pUVM, pDbgc->idCpu, szDisAndRegs, sizeof(szDisAndRegs),
1463	"u %04VR{cs}:%08VR{eip} L 0\n"
1464	"eax=%08VR{eax} ebx=%08VR{ebx} ecx=%08VR{ecx} edx=%08VR{edx} esi=%08VR{esi} edi=%08VR{edi}\n"
1465	"eip=%08VR{eip} esp=%08VR{esp} ebp=%08VR{ebp} %VRF{eflags}\n"
1466	"cs={%04VR{cs} base=%08VR{cs_base} limit=%08VR{cs_lim} flags=%04VR{cs_attr}} dr0=%08VR{dr0} dr1=%08VR{dr1}\n"
1467	"ds={%04VR{ds} base=%08VR{ds_base} limit=%08VR{ds_lim} flags=%04VR{ds_attr}} dr2=%08VR{dr2} dr3=%08VR{dr3}\n"
1468	"es={%04VR{es} base=%08VR{es_base} limit=%08VR{es_lim} flags=%04VR{es_attr}} dr6=%08VR{dr6} dr7=%08VR{dr7}\n"
1469	"fs={%04VR{fs} base=%08VR{fs_base} limit=%08VR{fs_lim} flags=%04VR{fs_attr}} cr0=%08VR{cr0} cr2=%08VR{cr2}\n"
1470	"gs={%04VR{gs} base=%08VR{gs_base} limit=%08VR{gs_lim} flags=%04VR{gs_attr}} cr3=%08VR{cr3} cr4=%08VR{cr4}\n"
1471	"ss={%04VR{ss} base=%08VR{ss_base} limit=%08VR{ss_lim} flags=%04VR{ss_attr}} cr8=%08VR{cr8}\n"
1472	"gdtr=%08VR{gdtr_base}:%04VR{gdtr_lim} idtr=%08VR{idtr_base}:%04VR{idtr_lim} eflags=%08VR{eflags}\n"
1473	"ldtr={%04VR{ldtr} base=%08VR{ldtr_base} limit=%08VR{ldtr_lim} flags=%04VR{ldtr_attr}}\n"
1474	"tr ={%04VR{tr} base=%08VR{tr_base} limit=%08VR{tr_lim} flags=%04VR{tr_attr}}\n"
1475	"sysenter={cs=%04VR{sysenter_cs} eip=%08VR{sysenter_eip} esp=%08VR{sysenter_esp}}\n"
1476	"fcw=%04VR{fcw} fsw=%04VR{fsw} ftw=%04VR{ftw} mxcsr=%04VR{mxcsr} mxcsr_mask=%04VR{mxcsr_mask}\n"
1477	);
1478	}
1479	if (RT_FAILURE(rc))
1480	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "DBGFR3RegPrintf failed");
1481	char *pszRegs = strchr(szDisAndRegs, '\n');
1482	*pszRegs++ = '\0';
1483	rc = DBGCCmdHlpPrintf(pCmdHlp, "%s", pszRegs);
1484
1485	/*
1486	* Disassemble one instruction at cs:[r\|e]ip.
1487	*/
1488	return pCmdHlp->pfnExec(pCmdHlp, "%s", szDisAndRegs);
1489	}
1490	return dbgcCmdRegCommon(pCmd, pCmdHlp, pUVM, paArgs, cArgs, "");
1491	}
1492
1493
1494	/**
1495	* @interface_method_impl{FNDBCCMD, The 'rh' command.}
1496	*/
1497	static DECLCALLBACK(int) dbgcCmdRegHyper(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
1498	{
1499	/*
1500	* Show all registers our selves.
1501	*/
1502	if (cArgs == 0)
1503	{
1504	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
1505	char szDisAndRegs[8192];
1506	int rc;
1507
1508	if (pDbgc->fRegTerse)
1509	rc = DBGFR3RegPrintf(pUVM, pDbgc->idCpu \| DBGFREG_HYPER_VMCPUID, szDisAndRegs, sizeof(szDisAndRegs),
1510	"u %VR{cs}:%VR{eip} L 0\n"
1511	".eax=%08VR{eax} .ebx=%08VR{ebx} .ecx=%08VR{ecx} .edx=%08VR{edx} .esi=%08VR{esi} .edi=%08VR{edi}\n"
1512	".eip=%08VR{eip} .esp=%08VR{esp} .ebp=%08VR{ebp} .%VRF{eflags}\n"
1513	".cs=%04VR{cs} .ds=%04VR{ds} .es=%04VR{es} .fs=%04VR{fs} .gs=%04VR{gs} .ss=%04VR{ss} .eflags=%08VR{eflags}\n");
1514	else
1515	rc = DBGFR3RegPrintf(pUVM, pDbgc->idCpu \| DBGFREG_HYPER_VMCPUID, szDisAndRegs, sizeof(szDisAndRegs),
1516	"u %04VR{cs}:%08VR{eip} L 0\n"
1517	".eax=%08VR{eax} .ebx=%08VR{ebx} .ecx=%08VR{ecx} .edx=%08VR{edx} .esi=%08VR{esi} .edi=%08VR{edi}\n"
1518	".eip=%08VR{eip} .esp=%08VR{esp} .ebp=%08VR{ebp} .%VRF{eflags}\n"
1519	".cs={%04VR{cs} base=%08VR{cs_base} limit=%08VR{cs_lim} flags=%04VR{cs_attr}} .dr0=%08VR{dr0} .dr1=%08VR{dr1}\n"
1520	".ds={%04VR{ds} base=%08VR{ds_base} limit=%08VR{ds_lim} flags=%04VR{ds_attr}} .dr2=%08VR{dr2} .dr3=%08VR{dr3}\n"
1521	".es={%04VR{es} base=%08VR{es_base} limit=%08VR{es_lim} flags=%04VR{es_attr}} .dr6=%08VR{dr6} .dr6=%08VR{dr6}\n"
1522	".fs={%04VR{fs} base=%08VR{fs_base} limit=%08VR{fs_lim} flags=%04VR{fs_attr}} .cr3=%016VR{cr3}\n"
1523	".gs={%04VR{gs} base=%08VR{gs_base} limit=%08VR{gs_lim} flags=%04VR{gs_attr}}\n"
1524	".ss={%04VR{ss} base=%08VR{ss_base} limit=%08VR{ss_lim} flags=%04VR{ss_attr}}\n"
1525	".gdtr=%08VR{gdtr_base}:%04VR{gdtr_lim} .idtr=%08VR{idtr_base}:%04VR{idtr_lim} .eflags=%08VR{eflags}\n"
1526	".ldtr={%04VR{ldtr} base=%08VR{ldtr_base} limit=%08VR{ldtr_lim} flags=%04VR{ldtr_attr}}\n"
1527	".tr ={%04VR{tr} base=%08VR{tr_base} limit=%08VR{tr_lim} flags=%04VR{tr_attr}}\n"
1528	);
1529	if (RT_FAILURE(rc))
1530	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "DBGFR3RegPrintf failed");
1531	char *pszRegs = strchr(szDisAndRegs, '\n');
1532	*pszRegs++ = '\0';
1533	rc = DBGCCmdHlpPrintf(pCmdHlp, "%s", pszRegs);
1534
1535	/*
1536	* Disassemble one instruction at cs:[r\|e]ip.
1537	*/
1538	return pCmdHlp->pfnExec(pCmdHlp, "%s", szDisAndRegs);
1539	}
1540	return dbgcCmdRegCommon(pCmd, pCmdHlp, pUVM, paArgs, cArgs, ".");
1541	}
1542
1543
1544	/**
1545	* @interface_method_impl{FNDBCCMD, The 'rt' command.}
1546	*/
1547	static DECLCALLBACK(int) dbgcCmdRegTerse(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
1548	{
1549	NOREF(pCmd); NOREF(pUVM); NOREF(paArgs); NOREF(cArgs);
1550
1551	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
1552	pDbgc->fRegTerse = !pDbgc->fRegTerse;
1553	return DBGCCmdHlpPrintf(pCmdHlp, pDbgc->fRegTerse ? "info: Terse register info.\n" : "info: Verbose register info.\n");
1554	}
1555
1556
1557	/**
1558	* @interface_method_impl{FNDBCCMD, The 't' command.}
1559	*/
1560	static DECLCALLBACK(int) dbgcCmdTrace(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
1561	{
1562	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
1563
1564	int rc = DBGFR3Step(pUVM, pDbgc->idCpu);
1565	if (RT_SUCCESS(rc))
1566	pDbgc->fReady = false;
1567	else
1568	rc = pDbgc->CmdHlp.pfnVBoxError(&pDbgc->CmdHlp, rc, "When trying to single step VM %p\n", pDbgc->pVM);
1569
1570	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
1571	return rc;
1572	}
1573
1574
1575	/**
1576	* @interface_method_impl{FNDBCCMD, The 'k', 'kg' and 'kh' commands.}
1577	*/
1578	static DECLCALLBACK(int) dbgcCmdStack(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
1579	{
1580	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
1581
1582	/*
1583	* Figure which context we're called for and start walking that stack.
1584	*/
1585	int rc;
1586	PCDBGFSTACKFRAME pFirstFrame;
1587	bool const fGuest = pCmd->pszCmd[1] == 'g'
1588	\|\| (!pCmd->pszCmd[1] && pDbgc->fRegCtxGuest);
1589	rc = DBGFR3StackWalkBegin(pUVM, pDbgc->idCpu, fGuest ? DBGFCODETYPE_GUEST : DBGFCODETYPE_HYPER, &pFirstFrame);
1590	if (RT_FAILURE(rc))
1591	return DBGCCmdHlpPrintf(pCmdHlp, "Failed to begin stack walk, rc=%Rrc\n", rc);
1592
1593	/*
1594	* Print header.
1595	* 12345678 12345678 0023:87654321 12345678 87654321 12345678 87654321 symbol
1596	*/
1597	uint32_t fBitFlags = 0;
1598	for (PCDBGFSTACKFRAME pFrame = pFirstFrame;
1599	pFrame;
1600	pFrame = DBGFR3StackWalkNext(pFrame))
1601	{
1602	uint32_t const fCurBitFlags = pFrame->fFlags & (DBGFSTACKFRAME_FLAGS_16BIT \| DBGFSTACKFRAME_FLAGS_32BIT \| DBGFSTACKFRAME_FLAGS_64BIT);
1603	if (fCurBitFlags & DBGFSTACKFRAME_FLAGS_16BIT)
1604	{
1605	if (fCurBitFlags != fBitFlags)
1606	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "SS:BP Ret SS:BP Ret CS:EIP Arg0 Arg1 Arg2 Arg3 CS:EIP / Symbol [line]\n");
1607	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04RX16:%04RX16 %04RX16:%04RX16 %04RX32:%08RX32 %08RX32 %08RX32 %08RX32 %08RX32",
1608	pFrame->AddrFrame.Sel,
1609	(uint16_t)pFrame->AddrFrame.off,
1610	pFrame->AddrReturnFrame.Sel,
1611	(uint16_t)pFrame->AddrReturnFrame.off,
1612	(uint32_t)pFrame->AddrReturnPC.Sel,
1613	(uint32_t)pFrame->AddrReturnPC.off,
1614	pFrame->Args.au32[0],
1615	pFrame->Args.au32[1],
1616	pFrame->Args.au32[2],
1617	pFrame->Args.au32[3]);
1618	}
1619	else if (fCurBitFlags & DBGFSTACKFRAME_FLAGS_32BIT)
1620	{
1621	if (fCurBitFlags != fBitFlags)
1622	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "EBP Ret EBP Ret CS:EIP Arg0 Arg1 Arg2 Arg3 CS:EIP / Symbol [line]\n");
1623	rc = DBGCCmdHlpPrintf(pCmdHlp, "%08RX32 %08RX32 %04RX32:%08RX32 %08RX32 %08RX32 %08RX32 %08RX32",
1624	(uint32_t)pFrame->AddrFrame.off,
1625	(uint32_t)pFrame->AddrReturnFrame.off,
1626	(uint32_t)pFrame->AddrReturnPC.Sel,
1627	(uint32_t)pFrame->AddrReturnPC.off,
1628	pFrame->Args.au32[0],
1629	pFrame->Args.au32[1],
1630	pFrame->Args.au32[2],
1631	pFrame->Args.au32[3]);
1632	}
1633	else if (fCurBitFlags & DBGFSTACKFRAME_FLAGS_64BIT)
1634	{
1635	if (fCurBitFlags != fBitFlags)
1636	pCmdHlp->pfnPrintf(pCmdHlp, NULL, "RBP Ret SS:RBP Ret RIP CS:RIP / Symbol [line]\n");
1637	rc = DBGCCmdHlpPrintf(pCmdHlp, "%016RX64 %04RX16:%016RX64 %016RX64",
1638	(uint64_t)pFrame->AddrFrame.off,
1639	pFrame->AddrReturnFrame.Sel,
1640	(uint64_t)pFrame->AddrReturnFrame.off,
1641	(uint64_t)pFrame->AddrReturnPC.off);
1642	}
1643	if (RT_FAILURE(rc))
1644	break;
1645	if (!pFrame->pSymPC)
1646	rc = pCmdHlp->pfnPrintf(pCmdHlp, NULL,
1647	fCurBitFlags & DBGFSTACKFRAME_FLAGS_64BIT
1648	? " %RTsel:%016RGv"
1649	: fCurBitFlags & DBGFSTACKFRAME_FLAGS_32BIT
1650	? " %RTsel:%08RGv"
1651	: " %RTsel:%04RGv"
1652	, pFrame->AddrPC.Sel, pFrame->AddrPC.off);
1653	else
1654	{
1655	RTGCINTPTR offDisp = pFrame->AddrPC.FlatPtr - pFrame->pSymPC->Value; /** @todo this isn't 100% correct for segmented stuff. */
1656	if (offDisp > 0)
1657	rc = DBGCCmdHlpPrintf(pCmdHlp, " %s+%llx", pFrame->pSymPC->szName, (int64_t)offDisp);
1658	else if (offDisp < 0)
1659	rc = DBGCCmdHlpPrintf(pCmdHlp, " %s-%llx", pFrame->pSymPC->szName, -(int64_t)offDisp);
1660	else
1661	rc = DBGCCmdHlpPrintf(pCmdHlp, " %s", pFrame->pSymPC->szName);
1662	}
1663	if (RT_SUCCESS(rc) && pFrame->pLinePC)
1664	rc = DBGCCmdHlpPrintf(pCmdHlp, " [%s @ 0i%d]", pFrame->pLinePC->szFilename, pFrame->pLinePC->uLineNo);
1665	if (RT_SUCCESS(rc))
1666	rc = DBGCCmdHlpPrintf(pCmdHlp, "\n");
1667	if (RT_FAILURE(rc))
1668	break;
1669
1670	fBitFlags = fCurBitFlags;
1671	}
1672
1673	DBGFR3StackWalkEnd(pFirstFrame);
1674
1675	NOREF(paArgs); NOREF(cArgs);
1676	return rc;
1677	}
1678
1679
1680	static int dbgcCmdDumpDTWorker64(PDBGCCMDHLP pCmdHlp, PCX86DESC64 pDesc, unsigned iEntry, bool fHyper, bool *pfDblEntry)
1681	{
1682	/* GUEST64 */
1683	int rc;
1684
1685	const char *pszHyper = fHyper ? " HYPER" : "";
1686	const char *pszPresent = pDesc->Gen.u1Present ? "P " : "NP";
1687	if (pDesc->Gen.u1DescType)
1688	{
1689	static const char * const s_apszTypes[] =
1690	{
1691	"DataRO", /* 0 Read-Only */
1692	"DataRO", /* 1 Read-Only - Accessed */
1693	"DataRW", /* 2 Read/Write */
1694	"DataRW", /* 3 Read/Write - Accessed */
1695	"DownRO", /* 4 Expand-down, Read-Only */
1696	"DownRO", /* 5 Expand-down, Read-Only - Accessed */
1697	"DownRW", /* 6 Expand-down, Read/Write */
1698	"DownRW", /* 7 Expand-down, Read/Write - Accessed */
1699	"CodeEO", /* 8 Execute-Only */
1700	"CodeEO", /* 9 Execute-Only - Accessed */
1701	"CodeER", /* A Execute/Readable */
1702	"CodeER", /* B Execute/Readable - Accessed */
1703	"ConfE0", /* C Conforming, Execute-Only */
1704	"ConfE0", /* D Conforming, Execute-Only - Accessed */
1705	"ConfER", /* E Conforming, Execute/Readable */
1706	"ConfER" /* F Conforming, Execute/Readable - Accessed */
1707	};
1708	const char *pszAccessed = pDesc->Gen.u4Type & RT_BIT(0) ? "A " : "NA";
1709	const char *pszGranularity = pDesc->Gen.u1Granularity ? "G" : " ";
1710	const char *pszBig = pDesc->Gen.u1DefBig ? "BIG" : " ";
1711	uint32_t u32Base = X86DESC_BASE(pDesc);
1712	uint32_t cbLimit = X86DESC_LIMIT_G(pDesc);
1713
1714	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %s Bas=%08x Lim=%08x DPL=%d %s %s %s %s AVL=%d L=%d%s\n",
1715	iEntry, s_apszTypes[pDesc->Gen.u4Type], u32Base, cbLimit,
1716	pDesc->Gen.u2Dpl, pszPresent, pszAccessed, pszGranularity, pszBig,
1717	pDesc->Gen.u1Available, pDesc->Gen.u1Long, pszHyper);
1718	}
1719	else
1720	{
1721	static const char * const s_apszTypes[] =
1722	{
1723	"Ill-0 ", /* 0 0000 Reserved (Illegal) */
1724	"Ill-1 ", /* 1 0001 Available 16-bit TSS */
1725	"LDT ", /* 2 0010 LDT */
1726	"Ill-3 ", /* 3 0011 Busy 16-bit TSS */
1727	"Ill-4 ", /* 4 0100 16-bit Call Gate */
1728	"Ill-5 ", /* 5 0101 Task Gate */
1729	"Ill-6 ", /* 6 0110 16-bit Interrupt Gate */
1730	"Ill-7 ", /* 7 0111 16-bit Trap Gate */
1731	"Ill-8 ", /* 8 1000 Reserved (Illegal) */
1732	"Tss64A", /* 9 1001 Available 32-bit TSS */
1733	"Ill-A ", /* A 1010 Reserved (Illegal) */
1734	"Tss64B", /* B 1011 Busy 32-bit TSS */
1735	"Call64", /* C 1100 32-bit Call Gate */
1736	"Ill-D ", /* D 1101 Reserved (Illegal) */
1737	"Int64 ", /* E 1110 32-bit Interrupt Gate */
1738	"Trap64" /* F 1111 32-bit Trap Gate */
1739	};
1740	switch (pDesc->Gen.u4Type)
1741	{
1742	/* raw */
1743	case X86_SEL_TYPE_SYS_UNDEFINED:
1744	case X86_SEL_TYPE_SYS_UNDEFINED2:
1745	case X86_SEL_TYPE_SYS_UNDEFINED4:
1746	case X86_SEL_TYPE_SYS_UNDEFINED3:
1747	case X86_SEL_TYPE_SYS_286_TSS_AVAIL:
1748	case X86_SEL_TYPE_SYS_286_TSS_BUSY:
1749	case X86_SEL_TYPE_SYS_286_CALL_GATE:
1750	case X86_SEL_TYPE_SYS_286_INT_GATE:
1751	case X86_SEL_TYPE_SYS_286_TRAP_GATE:
1752	case X86_SEL_TYPE_SYS_TASK_GATE:
1753	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %s %.8Rhxs DPL=%d %s%s\n",
1754	iEntry, s_apszTypes[pDesc->Gen.u4Type], pDesc,
1755	pDesc->Gen.u2Dpl, pszPresent, pszHyper);
1756	break;
1757
1758	case X86_SEL_TYPE_SYS_386_TSS_AVAIL:
1759	case X86_SEL_TYPE_SYS_386_TSS_BUSY:
1760	case X86_SEL_TYPE_SYS_LDT:
1761	{
1762	const char *pszBusy = pDesc->Gen.u4Type & RT_BIT(1) ? "B " : "NB";
1763	const char *pszBig = pDesc->Gen.u1DefBig ? "BIG" : " ";
1764	const char *pszLong = pDesc->Gen.u1Long ? "LONG" : " ";
1765
1766	uint64_t u32Base = X86DESC64_BASE(pDesc);
1767	uint32_t cbLimit = X86DESC_LIMIT_G(pDesc);
1768
1769	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %s Bas=%016RX64 Lim=%08x DPL=%d %s %s %s %sAVL=%d R=%d%s\n",
1770	iEntry, s_apszTypes[pDesc->Gen.u4Type], u32Base, cbLimit,
1771	pDesc->Gen.u2Dpl, pszPresent, pszBusy, pszLong, pszBig,
1772	pDesc->Gen.u1Available, pDesc->Gen.u1Long \| (pDesc->Gen.u1DefBig << 1),
1773	pszHyper);
1774	if (pfDblEntry)
1775	*pfDblEntry = true;
1776	break;
1777	}
1778
1779	case X86_SEL_TYPE_SYS_386_CALL_GATE:
1780	{
1781	unsigned cParams = pDesc->au8[4] & 0x1f;
1782	const char *pszCountOf = pDesc->Gen.u4Type & RT_BIT(3) ? "DC" : "WC";
1783	RTSEL sel = pDesc->au16[1];
1784	uint64_t off = pDesc->au16[0]
1785	\| ((uint64_t)pDesc->au16[3] << 16)
1786	\| ((uint64_t)pDesc->Gen.u32BaseHigh3 << 32);
1787	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %s Sel:Off=%04x:%016RX64 DPL=%d %s %s=%d%s\n",
1788	iEntry, s_apszTypes[pDesc->Gen.u4Type], sel, off,
1789	pDesc->Gen.u2Dpl, pszPresent, pszCountOf, cParams, pszHyper);
1790	if (pfDblEntry)
1791	*pfDblEntry = true;
1792	break;
1793	}
1794
1795	case X86_SEL_TYPE_SYS_386_INT_GATE:
1796	case X86_SEL_TYPE_SYS_386_TRAP_GATE:
1797	{
1798	RTSEL sel = pDesc->au16[1];
1799	uint64_t off = pDesc->au16[0]
1800	\| ((uint64_t)pDesc->au16[3] << 16)
1801	\| ((uint64_t)pDesc->Gen.u32BaseHigh3 << 32);
1802	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %s Sel:Off=%04x:%016RX64 DPL=%d %s%s\n",
1803	iEntry, s_apszTypes[pDesc->Gen.u4Type], sel, off,
1804	pDesc->Gen.u2Dpl, pszPresent, pszHyper);
1805	if (pfDblEntry)
1806	*pfDblEntry = true;
1807	break;
1808	}
1809
1810	/* impossible, just it's necessary to keep gcc happy. */
1811	default:
1812	return VINF_SUCCESS;
1813	}
1814	}
1815	return VINF_SUCCESS;
1816	}
1817
1818
1819	/**
1820	* Worker function that displays one descriptor entry (GDT, LDT, IDT).
1821	*
1822	* @returns pfnPrintf status code.
1823	* @param pCmdHlp The DBGC command helpers.
1824	* @param pDesc The descriptor to display.
1825	* @param iEntry The descriptor entry number.
1826	* @param fHyper Whether the selector belongs to the hypervisor or not.
1827	*/
1828	static int dbgcCmdDumpDTWorker32(PDBGCCMDHLP pCmdHlp, PCX86DESC pDesc, unsigned iEntry, bool fHyper)
1829	{
1830	int rc;
1831
1832	const char *pszHyper = fHyper ? " HYPER" : "";
1833	const char *pszPresent = pDesc->Gen.u1Present ? "P " : "NP";
1834	if (pDesc->Gen.u1DescType)
1835	{
1836	static const char * const s_apszTypes[] =
1837	{
1838	"DataRO", /* 0 Read-Only */
1839	"DataRO", /* 1 Read-Only - Accessed */
1840	"DataRW", /* 2 Read/Write */
1841	"DataRW", /* 3 Read/Write - Accessed */
1842	"DownRO", /* 4 Expand-down, Read-Only */
1843	"DownRO", /* 5 Expand-down, Read-Only - Accessed */
1844	"DownRW", /* 6 Expand-down, Read/Write */
1845	"DownRW", /* 7 Expand-down, Read/Write - Accessed */
1846	"CodeEO", /* 8 Execute-Only */
1847	"CodeEO", /* 9 Execute-Only - Accessed */
1848	"CodeER", /* A Execute/Readable */
1849	"CodeER", /* B Execute/Readable - Accessed */
1850	"ConfE0", /* C Conforming, Execute-Only */
1851	"ConfE0", /* D Conforming, Execute-Only - Accessed */
1852	"ConfER", /* E Conforming, Execute/Readable */
1853	"ConfER" /* F Conforming, Execute/Readable - Accessed */
1854	};
1855	const char *pszAccessed = pDesc->Gen.u4Type & RT_BIT(0) ? "A " : "NA";
1856	const char *pszGranularity = pDesc->Gen.u1Granularity ? "G" : " ";
1857	const char *pszBig = pDesc->Gen.u1DefBig ? "BIG" : " ";
1858	uint32_t u32Base = pDesc->Gen.u16BaseLow
1859	\| ((uint32_t)pDesc->Gen.u8BaseHigh1 << 16)
1860	\| ((uint32_t)pDesc->Gen.u8BaseHigh2 << 24);
1861	uint32_t cbLimit = pDesc->Gen.u16LimitLow \| (pDesc->Gen.u4LimitHigh << 16);
1862	if (pDesc->Gen.u1Granularity)
1863	cbLimit <<= PAGE_SHIFT;
1864
1865	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %s Bas=%08x Lim=%08x DPL=%d %s %s %s %s AVL=%d L=%d%s\n",
1866	iEntry, s_apszTypes[pDesc->Gen.u4Type], u32Base, cbLimit,
1867	pDesc->Gen.u2Dpl, pszPresent, pszAccessed, pszGranularity, pszBig,
1868	pDesc->Gen.u1Available, pDesc->Gen.u1Long, pszHyper);
1869	}
1870	else
1871	{
1872	static const char * const s_apszTypes[] =
1873	{
1874	"Ill-0 ", /* 0 0000 Reserved (Illegal) */
1875	"Tss16A", /* 1 0001 Available 16-bit TSS */
1876	"LDT ", /* 2 0010 LDT */
1877	"Tss16B", /* 3 0011 Busy 16-bit TSS */
1878	"Call16", /* 4 0100 16-bit Call Gate */
1879	"TaskG ", /* 5 0101 Task Gate */
1880	"Int16 ", /* 6 0110 16-bit Interrupt Gate */
1881	"Trap16", /* 7 0111 16-bit Trap Gate */
1882	"Ill-8 ", /* 8 1000 Reserved (Illegal) */
1883	"Tss32A", /* 9 1001 Available 32-bit TSS */
1884	"Ill-A ", /* A 1010 Reserved (Illegal) */
1885	"Tss32B", /* B 1011 Busy 32-bit TSS */
1886	"Call32", /* C 1100 32-bit Call Gate */
1887	"Ill-D ", /* D 1101 Reserved (Illegal) */
1888	"Int32 ", /* E 1110 32-bit Interrupt Gate */
1889	"Trap32" /* F 1111 32-bit Trap Gate */
1890	};
1891	switch (pDesc->Gen.u4Type)
1892	{
1893	/* raw */
1894	case X86_SEL_TYPE_SYS_UNDEFINED:
1895	case X86_SEL_TYPE_SYS_UNDEFINED2:
1896	case X86_SEL_TYPE_SYS_UNDEFINED4:
1897	case X86_SEL_TYPE_SYS_UNDEFINED3:
1898	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %s %.8Rhxs DPL=%d %s%s\n",
1899	iEntry, s_apszTypes[pDesc->Gen.u4Type], pDesc,
1900	pDesc->Gen.u2Dpl, pszPresent, pszHyper);
1901	break;
1902
1903	case X86_SEL_TYPE_SYS_286_TSS_AVAIL:
1904	case X86_SEL_TYPE_SYS_386_TSS_AVAIL:
1905	case X86_SEL_TYPE_SYS_286_TSS_BUSY:
1906	case X86_SEL_TYPE_SYS_386_TSS_BUSY:
1907	case X86_SEL_TYPE_SYS_LDT:
1908	{
1909	const char *pszGranularity = pDesc->Gen.u1Granularity ? "G" : " ";
1910	const char *pszBusy = pDesc->Gen.u4Type & RT_BIT(1) ? "B " : "NB";
1911	const char *pszBig = pDesc->Gen.u1DefBig ? "BIG" : " ";
1912	uint32_t u32Base = pDesc->Gen.u16BaseLow
1913	\| ((uint32_t)pDesc->Gen.u8BaseHigh1 << 16)
1914	\| ((uint32_t)pDesc->Gen.u8BaseHigh2 << 24);
1915	uint32_t cbLimit = pDesc->Gen.u16LimitLow \| (pDesc->Gen.u4LimitHigh << 16);
1916	if (pDesc->Gen.u1Granularity)
1917	cbLimit <<= PAGE_SHIFT;
1918
1919	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %s Bas=%08x Lim=%08x DPL=%d %s %s %s %s AVL=%d R=%d%s\n",
1920	iEntry, s_apszTypes[pDesc->Gen.u4Type], u32Base, cbLimit,
1921	pDesc->Gen.u2Dpl, pszPresent, pszBusy, pszGranularity, pszBig,
1922	pDesc->Gen.u1Available, pDesc->Gen.u1Long \| (pDesc->Gen.u1DefBig << 1),
1923	pszHyper);
1924	break;
1925	}
1926
1927	case X86_SEL_TYPE_SYS_TASK_GATE:
1928	{
1929	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %s TSS=%04x DPL=%d %s%s\n",
1930	iEntry, s_apszTypes[pDesc->Gen.u4Type], pDesc->au16[1],
1931	pDesc->Gen.u2Dpl, pszPresent, pszHyper);
1932	break;
1933	}
1934
1935	case X86_SEL_TYPE_SYS_286_CALL_GATE:
1936	case X86_SEL_TYPE_SYS_386_CALL_GATE:
1937	{
1938	unsigned cParams = pDesc->au8[4] & 0x1f;
1939	const char *pszCountOf = pDesc->Gen.u4Type & RT_BIT(3) ? "DC" : "WC";
1940	RTSEL sel = pDesc->au16[1];
1941	uint32_t off = pDesc->au16[0] \| ((uint32_t)pDesc->au16[3] << 16);
1942	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %s Sel:Off=%04x:%08x DPL=%d %s %s=%d%s\n",
1943	iEntry, s_apszTypes[pDesc->Gen.u4Type], sel, off,
1944	pDesc->Gen.u2Dpl, pszPresent, pszCountOf, cParams, pszHyper);
1945	break;
1946	}
1947
1948	case X86_SEL_TYPE_SYS_286_INT_GATE:
1949	case X86_SEL_TYPE_SYS_386_INT_GATE:
1950	case X86_SEL_TYPE_SYS_286_TRAP_GATE:
1951	case X86_SEL_TYPE_SYS_386_TRAP_GATE:
1952	{
1953	RTSEL sel = pDesc->au16[1];
1954	uint32_t off = pDesc->au16[0] \| ((uint32_t)pDesc->au16[3] << 16);
1955	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %s Sel:Off=%04x:%08x DPL=%d %s%s\n",
1956	iEntry, s_apszTypes[pDesc->Gen.u4Type], sel, off,
1957	pDesc->Gen.u2Dpl, pszPresent, pszHyper);
1958	break;
1959	}
1960
1961	/* impossible, just it's necessary to keep gcc happy. */
1962	default:
1963	return VINF_SUCCESS;
1964	}
1965	}
1966	return rc;
1967	}
1968
1969
1970	/**
1971	* @interface_method_impl{FNDBCCMD, The 'dg', 'dga', 'dl' and 'dla' commands.}
1972	*/
1973	static DECLCALLBACK(int) dbgcCmdDumpDT(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
1974	{
1975	/*
1976	* Validate input.
1977	*/
1978	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
1979
1980	/*
1981	* Get the CPU mode, check which command variation this is
1982	* and fix a default parameter if needed.
1983	*/
1984	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
1985	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, pDbgc->idCpu);
1986	CPUMMODE enmMode = CPUMGetGuestMode(pVCpu);
1987	bool fGdt = pCmd->pszCmd[1] == 'g';
1988	bool fAll = pCmd->pszCmd[2] == 'a';
1989	RTSEL SelTable = fGdt ? 0 : X86_SEL_LDT;
1990
1991	DBGCVAR Var;
1992	if (!cArgs)
1993	{
1994	cArgs = 1;
1995	paArgs = &Var;
1996	Var.enmType = DBGCVAR_TYPE_NUMBER;
1997	Var.u.u64Number = 0;
1998	Var.enmRangeType = DBGCVAR_RANGE_ELEMENTS;
1999	Var.u64Range = 1024;
2000	}
2001
2002	/*
2003	* Process the arguments.
2004	*/
2005	for (unsigned i = 0; i < cArgs; i++)
2006	{
2007	/*
2008	* Retrieve the selector value from the argument.
2009	* The parser may confuse pointers and numbers if more than one
2010	* argument is given, that that into account.
2011	*/
2012	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, i, paArgs[i].enmType == DBGCVAR_TYPE_NUMBER \|\| DBGCVAR_ISPOINTER(paArgs[i].enmType));
2013	uint64_t u64;
2014	unsigned cSels = 1;
2015	switch (paArgs[i].enmType)
2016	{
2017	case DBGCVAR_TYPE_NUMBER:
2018	u64 = paArgs[i].u.u64Number;
2019	if (paArgs[i].enmRangeType != DBGCVAR_RANGE_NONE)
2020	cSels = RT_MIN(paArgs[i].u64Range, 1024);
2021	break;
2022	case DBGCVAR_TYPE_GC_FAR: u64 = paArgs[i].u.GCFar.sel; break;
2023	case DBGCVAR_TYPE_GC_FLAT: u64 = paArgs[i].u.GCFlat; break;
2024	case DBGCVAR_TYPE_GC_PHYS: u64 = paArgs[i].u.GCPhys; break;
2025	case DBGCVAR_TYPE_HC_FLAT: u64 = (uintptr_t)paArgs[i].u.pvHCFlat; break;
2026	case DBGCVAR_TYPE_HC_PHYS: u64 = paArgs[i].u.HCPhys; break;
2027	default: u64 = _64K; break;
2028	}
2029	if (u64 < _64K)
2030	{
2031	unsigned Sel = (RTSEL)u64;
2032
2033	/*
2034	* Dump the specified range.
2035	*/
2036	bool fSingle = cSels == 1;
2037	while ( cSels-- > 0
2038	&& Sel < _64K)
2039	{
2040	DBGFSELINFO SelInfo;
2041	int rc = DBGFR3SelQueryInfo(pUVM, pDbgc->idCpu, Sel \| SelTable, DBGFSELQI_FLAGS_DT_GUEST, &SelInfo);
2042	if (RT_SUCCESS(rc))
2043	{
2044	if (SelInfo.fFlags & DBGFSELINFO_FLAGS_REAL_MODE)
2045	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x RealM Bas=%04x Lim=%04x\n",
2046	Sel, (unsigned)SelInfo.GCPtrBase, (unsigned)SelInfo.cbLimit);
2047	else if ( fAll
2048	\|\| fSingle
2049	\|\| SelInfo.u.Raw.Gen.u1Present)
2050	{
2051	if (enmMode == CPUMMODE_PROTECTED)
2052	rc = dbgcCmdDumpDTWorker32(pCmdHlp, &SelInfo.u.Raw, Sel, !!(SelInfo.fFlags & DBGFSELINFO_FLAGS_HYPER));
2053	else
2054	{
2055	bool fDblSkip = false;
2056	rc = dbgcCmdDumpDTWorker64(pCmdHlp, &SelInfo.u.Raw64, Sel, !!(SelInfo.fFlags & DBGFSELINFO_FLAGS_HYPER), &fDblSkip);
2057	if (fDblSkip)
2058	Sel += 4;
2059	}
2060	}
2061	}
2062	else
2063	{
2064	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %Rrc\n", Sel, rc);
2065	if (!fAll)
2066	return rc;
2067	}
2068	if (RT_FAILURE(rc))
2069	return rc;
2070
2071	/* next */
2072	Sel += 8;
2073	}
2074	}
2075	else
2076	DBGCCmdHlpPrintf(pCmdHlp, "error: %llx is out of bounds\n", u64);
2077	}
2078
2079	return VINF_SUCCESS;
2080	}
2081
2082
2083	/**
2084	* @interface_method_impl{FNDBCCMD, The 'di' and 'dia' commands.}
2085	*/
2086	static DECLCALLBACK(int) dbgcCmdDumpIDT(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
2087	{
2088	/*
2089	* Validate input.
2090	*/
2091	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
2092
2093	/*
2094	* Establish some stuff like the current IDTR and CPU mode,
2095	* and fix a default parameter.
2096	*/
2097	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
2098	PVMCPU pVCpu = VMMR3GetCpuByIdU(pUVM, pDbgc->idCpu);
2099	uint16_t cbLimit;
2100	RTGCUINTPTR GCPtrBase = CPUMGetGuestIDTR(pVCpu, &cbLimit);
2101	CPUMMODE enmMode = CPUMGetGuestMode(pVCpu);
2102	unsigned cbEntry;
2103	switch (enmMode)
2104	{
2105	case CPUMMODE_REAL: cbEntry = sizeof(RTFAR16); break;
2106	case CPUMMODE_PROTECTED: cbEntry = sizeof(X86DESC); break;
2107	case CPUMMODE_LONG: cbEntry = sizeof(X86DESC64); break;
2108	default:
2109	return DBGCCmdHlpPrintf(pCmdHlp, "error: Invalid CPU mode %d.\n", enmMode);
2110	}
2111
2112	bool fAll = pCmd->pszCmd[2] == 'a';
2113	DBGCVAR Var;
2114	if (!cArgs)
2115	{
2116	cArgs = 1;
2117	paArgs = &Var;
2118	Var.enmType = DBGCVAR_TYPE_NUMBER;
2119	Var.u.u64Number = 0;
2120	Var.enmRangeType = DBGCVAR_RANGE_ELEMENTS;
2121	Var.u64Range = 256;
2122	}
2123
2124	/*
2125	* Process the arguments.
2126	*/
2127	for (unsigned i = 0; i < cArgs; i++)
2128	{
2129	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, i, paArgs[i].enmType == DBGCVAR_TYPE_NUMBER);
2130	if (paArgs[i].u.u64Number < 256)
2131	{
2132	RTGCUINTPTR iInt = (RTGCUINTPTR)paArgs[i].u.u64Number;
2133	unsigned cInts = paArgs[i].enmRangeType != DBGCVAR_RANGE_NONE
2134	? paArgs[i].u64Range
2135	: 1;
2136	bool fSingle = cInts == 1;
2137	while ( cInts-- > 0
2138	&& iInt < 256)
2139	{
2140	/*
2141	* Try read it.
2142	*/
2143	union
2144	{
2145	RTFAR16 Real;
2146	X86DESC Prot;
2147	X86DESC64 Long;
2148	} u;
2149	if (iInt * cbEntry + (cbEntry - 1) > cbLimit)
2150	{
2151	DBGCCmdHlpPrintf(pCmdHlp, "%04x not within the IDT\n", (unsigned)iInt);
2152	if (!fAll && !fSingle)
2153	return VINF_SUCCESS;
2154	}
2155	DBGCVAR AddrVar;
2156	AddrVar.enmType = DBGCVAR_TYPE_GC_FLAT;
2157	AddrVar.u.GCFlat = GCPtrBase + iInt * cbEntry;
2158	AddrVar.enmRangeType = DBGCVAR_RANGE_NONE;
2159	int rc = pCmdHlp->pfnMemRead(pCmdHlp, &u, cbEntry, &AddrVar, NULL);
2160	if (RT_FAILURE(rc))
2161	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "Reading IDT entry %#04x.\n", (unsigned)iInt);
2162
2163	/*
2164	* Display it.
2165	*/
2166	switch (enmMode)
2167	{
2168	case CPUMMODE_REAL:
2169	rc = DBGCCmdHlpPrintf(pCmdHlp, "%04x %RTfp16\n", (unsigned)iInt, u.Real);
2170	/** @todo resolve 16:16 IDTE to a symbol */
2171	break;
2172	case CPUMMODE_PROTECTED:
2173	if (fAll \|\| fSingle \|\| u.Prot.Gen.u1Present)
2174	rc = dbgcCmdDumpDTWorker32(pCmdHlp, &u.Prot, iInt, false);
2175	break;
2176	case CPUMMODE_LONG:
2177	if (fAll \|\| fSingle \|\| u.Long.Gen.u1Present)
2178	rc = dbgcCmdDumpDTWorker64(pCmdHlp, &u.Long, iInt, false, NULL);
2179	break;
2180	default: break; /* to shut up gcc */
2181	}
2182	if (RT_FAILURE(rc))
2183	return rc;
2184
2185	/* next */
2186	iInt++;
2187	}
2188	}
2189	else
2190	DBGCCmdHlpPrintf(pCmdHlp, "error: %llx is out of bounds (max 256)\n", paArgs[i].u.u64Number);
2191	}
2192
2193	return VINF_SUCCESS;
2194	}
2195
2196
2197	/**
2198	* @interface_method_impl{FNDBCCMD, The 'da', 'dq', 'dd', 'dw' and 'db'
2199	* commands.}
2200	*/
2201	static DECLCALLBACK(int) dbgcCmdDumpMem(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
2202	{
2203	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
2204
2205	/*
2206	* Validate input.
2207	*/
2208	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs <= 1);
2209	if (cArgs == 1)
2210	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, DBGCVAR_ISPOINTER(paArgs[0].enmType));
2211	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
2212
2213	/*
2214	* Figure out the element size.
2215	*/
2216	unsigned cbElement;
2217	bool fAscii = false;
2218	switch (pCmd->pszCmd[1])
2219	{
2220	default:
2221	case 'b': cbElement = 1; break;
2222	case 'w': cbElement = 2; break;
2223	case 'd': cbElement = 4; break;
2224	case 'q': cbElement = 8; break;
2225	case 'a':
2226	cbElement = 1;
2227	fAscii = true;
2228	break;
2229	case '\0':
2230	fAscii = !!(pDbgc->cbDumpElement & 0x80000000);
2231	cbElement = pDbgc->cbDumpElement & 0x7fffffff;
2232	if (!cbElement)
2233	cbElement = 1;
2234	break;
2235	}
2236
2237	/*
2238	* Find address.
2239	*/
2240	if (!cArgs)
2241	pDbgc->DumpPos.enmRangeType = DBGCVAR_RANGE_NONE;
2242	else
2243	pDbgc->DumpPos = paArgs[0];
2244
2245	/*
2246	* Range.
2247	*/
2248	switch (pDbgc->DumpPos.enmRangeType)
2249	{
2250	case DBGCVAR_RANGE_NONE:
2251	pDbgc->DumpPos.enmRangeType = DBGCVAR_RANGE_BYTES;
2252	pDbgc->DumpPos.u64Range = 0x60;
2253	break;
2254
2255	case DBGCVAR_RANGE_ELEMENTS:
2256	if (pDbgc->DumpPos.u64Range > 2048)
2257	return DBGCCmdHlpPrintf(pCmdHlp, "error: Too many elements requested. Max is 2048 elements.\n");
2258	pDbgc->DumpPos.enmRangeType = DBGCVAR_RANGE_BYTES;
2259	pDbgc->DumpPos.u64Range = (cbElement ? cbElement : 1) * pDbgc->DumpPos.u64Range;
2260	break;
2261
2262	case DBGCVAR_RANGE_BYTES:
2263	if (pDbgc->DumpPos.u64Range > 65536)
2264	return DBGCCmdHlpPrintf(pCmdHlp, "error: The requested range is too big. Max is 64KB.\n");
2265	break;
2266
2267	default:
2268	return DBGCCmdHlpPrintf(pCmdHlp, "internal error: Unknown range type %d.\n", pDbgc->DumpPos.enmRangeType);
2269	}
2270
2271	pDbgc->pLastPos = &pDbgc->DumpPos;
2272
2273	/*
2274	* Do the dumping.
2275	*/
2276	pDbgc->cbDumpElement = cbElement \| (fAscii << 31);
2277	int cbLeft = (int)pDbgc->DumpPos.u64Range;
2278	uint8_t u8Prev = '\0';
2279	for (;;)
2280	{
2281	/*
2282	* Read memory.
2283	*/
2284	char achBuffer[16];
2285	size_t cbReq = RT_MIN((int)sizeof(achBuffer), cbLeft);
2286	size_t cb = RT_MIN((int)sizeof(achBuffer), cbLeft);
2287	int rc = pCmdHlp->pfnMemRead(pCmdHlp, &achBuffer, cbReq, &pDbgc->DumpPos, &cb);
2288	if (RT_FAILURE(rc))
2289	{
2290	if (u8Prev && u8Prev != '\n')
2291	DBGCCmdHlpPrintf(pCmdHlp, "\n");
2292	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "Reading memory at %DV.\n", &pDbgc->DumpPos);
2293	}
2294
2295	/*
2296	* Display it.
2297	*/
2298	memset(&achBuffer[cb], 0, sizeof(achBuffer) - cb);
2299	if (!fAscii)
2300	{
2301	DBGCCmdHlpPrintf(pCmdHlp, "%DV:", &pDbgc->DumpPos);
2302	unsigned i;
2303	for (i = 0; i < cb; i += cbElement)
2304	{
2305	const char *pszSpace = " ";
2306	if (cbElement <= 2 && i == 8 && !fAscii)
2307	pszSpace = "-";
2308	switch (cbElement)
2309	{
2310	case 1: DBGCCmdHlpPrintf(pCmdHlp, "%s%02x", pszSpace, (uint8_t )&achBuffer[i]); break;
2311	case 2: DBGCCmdHlpPrintf(pCmdHlp, "%s%04x", pszSpace, (uint16_t )&achBuffer[i]); break;
2312	case 4: DBGCCmdHlpPrintf(pCmdHlp, "%s%08x", pszSpace, (uint32_t )&achBuffer[i]); break;
2313	case 8: DBGCCmdHlpPrintf(pCmdHlp, "%s%016llx", pszSpace, (uint64_t )&achBuffer[i]); break;
2314	}
2315	}
2316
2317	/* chars column */
2318	if (pDbgc->cbDumpElement == 1)
2319	{
2320	while (i++ < sizeof(achBuffer))
2321	DBGCCmdHlpPrintf(pCmdHlp, " ");
2322	DBGCCmdHlpPrintf(pCmdHlp, " ");
2323	for (i = 0; i < cb; i += cbElement)
2324	{
2325	uint8_t u8 = (uint8_t )&achBuffer[i];
2326	if (RT_C_IS_PRINT(u8) && u8 < 127 && u8 >= 32)
2327	DBGCCmdHlpPrintf(pCmdHlp, "%c", u8);
2328	else
2329	DBGCCmdHlpPrintf(pCmdHlp, ".");
2330	}
2331	}
2332	rc = DBGCCmdHlpPrintf(pCmdHlp, "\n");
2333	}
2334	else
2335	{
2336	/*
2337	* We print up to the first zero and stop there.
2338	* Only printables + '\t' and '\n' are printed.
2339	*/
2340	if (!u8Prev)
2341	DBGCCmdHlpPrintf(pCmdHlp, "%DV:\n", &pDbgc->DumpPos);
2342	uint8_t u8 = '\0';
2343	unsigned i;
2344	for (i = 0; i < cb; i++)
2345	{
2346	u8Prev = u8;
2347	u8 = (uint8_t )&achBuffer[i];
2348	if ( u8 < 127
2349	&& ( (RT_C_IS_PRINT(u8) && u8 >= 32)
2350	\|\| u8 == '\t'
2351	\|\| u8 == '\n'))
2352	DBGCCmdHlpPrintf(pCmdHlp, "%c", u8);
2353	else if (!u8)
2354	break;
2355	else
2356	DBGCCmdHlpPrintf(pCmdHlp, "\\x%x", u8);
2357	}
2358	if (u8 == '\0')
2359	cb = cbLeft = i + 1;
2360	if (cbLeft - cb <= 0 && u8Prev != '\n')
2361	DBGCCmdHlpPrintf(pCmdHlp, "\n");
2362	}
2363
2364	/*
2365	* Advance
2366	*/
2367	cbLeft -= (int)cb;
2368	rc = DBGCCmdHlpEval(pCmdHlp, &pDbgc->DumpPos, "(%Dv) + %x", &pDbgc->DumpPos, cb);
2369	if (RT_FAILURE(rc))
2370	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "Expression: (%Dv) + %x\n", &pDbgc->DumpPos, cb);
2371	if (cbLeft <= 0)
2372	break;
2373	}
2374
2375	NOREF(pCmd);
2376	return VINF_SUCCESS;
2377	}
2378
2379
2380	/**
2381	* Best guess at which paging mode currently applies to the guest
2382	* paging structures.
2383	*
2384	* This have to come up with a decent answer even when the guest
2385	* is in non-paged protected mode or real mode.
2386	*
2387	* @returns cr3.
2388	* @param pDbgc The DBGC instance.
2389	* @param pfPAE Where to store the page address extension indicator.
2390	* @param pfLME Where to store the long mode enabled indicator.
2391	* @param pfPSE Where to store the page size extension indicator.
2392	* @param pfPGE Where to store the page global enabled indicator.
2393	* @param pfNXE Where to store the no-execution enabled indicator.
2394	*/
2395	static RTGCPHYS dbgcGetGuestPageMode(PDBGC pDbgc, bool pfPAE, bool pfLME, bool pfPSE, bool pfPGE, bool *pfNXE)
2396	{
2397	PVMCPU pVCpu = VMMR3GetCpuByIdU(pDbgc->pUVM, pDbgc->idCpu);
2398	RTGCUINTREG cr4 = CPUMGetGuestCR4(pVCpu);
2399	*pfPSE = !!(cr4 & X86_CR4_PSE);
2400	*pfPGE = !!(cr4 & X86_CR4_PGE);
2401	if (cr4 & X86_CR4_PAE)
2402	{
2403	*pfPSE = true;
2404	*pfPAE = true;
2405	}
2406	else
2407	*pfPAE = false;
2408
2409	*pfLME = CPUMGetGuestMode(pVCpu) == CPUMMODE_LONG;
2410	pfNXE = false; / GUEST64 GUESTNX */
2411	return CPUMGetGuestCR3(pVCpu);
2412	}
2413
2414
2415	/**
2416	* Determine the shadow paging mode.
2417	*
2418	* @returns cr3.
2419	* @param pDbgc The DBGC instance.
2420	* @param pfPAE Where to store the page address extension indicator.
2421	* @param pfLME Where to store the long mode enabled indicator.
2422	* @param pfPSE Where to store the page size extension indicator.
2423	* @param pfPGE Where to store the page global enabled indicator.
2424	* @param pfNXE Where to store the no-execution enabled indicator.
2425	*/
2426	static RTHCPHYS dbgcGetShadowPageMode(PDBGC pDbgc, bool pfPAE, bool pfLME, bool pfPSE, bool pfPGE, bool *pfNXE)
2427	{
2428	PVMCPU pVCpu = VMMR3GetCpuByIdU(pDbgc->pUVM, pDbgc->idCpu);
2429
2430	*pfPSE = true;
2431	*pfPGE = false;
2432	switch (PGMGetShadowMode(pVCpu))
2433	{
2434	default:
2435	case PGMMODE_32_BIT:
2436	pfPAE = pfLME = *pfNXE = false;
2437	break;
2438	case PGMMODE_PAE:
2439	pfLME = pfNXE = false;
2440	*pfPAE = true;
2441	break;
2442	case PGMMODE_PAE_NX:
2443	*pfLME = false;
2444	pfPAE = pfNXE = true;
2445	break;
2446	case PGMMODE_AMD64:
2447	*pfNXE = false;
2448	pfPAE = pfLME = true;
2449	break;
2450	case PGMMODE_AMD64_NX:
2451	pfPAE = pfLME = *pfNXE = true;
2452	break;
2453	}
2454	return PGMGetHyperCR3(pVCpu);
2455	}
2456
2457
2458	/**
2459	* @interface_method_impl{FNDBCCMD, The 'dpd', 'dpda', 'dpdb', 'dpdg' and 'dpdh'
2460	* commands.}
2461	*/
2462	static DECLCALLBACK(int) dbgcCmdDumpPageDir(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
2463	{
2464	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
2465
2466	/*
2467	* Validate input.
2468	*/
2469	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs <= 1);
2470	if (cArgs == 1 && pCmd->pszCmd[3] == 'a')
2471	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, DBGCVAR_ISPOINTER(paArgs[0].enmType));
2472	if (cArgs == 1 && pCmd->pszCmd[3] != 'a')
2473	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, paArgs[0].enmType == DBGCVAR_TYPE_NUMBER
2474	\|\| DBGCVAR_ISPOINTER(paArgs[0].enmType));
2475	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
2476
2477	/*
2478	* Guest or shadow page directories? Get the paging parameters.
2479	*/
2480	bool fGuest = pCmd->pszCmd[3] != 'h';
2481	if (!pCmd->pszCmd[3] \|\| pCmd->pszCmd[3] == 'a')
2482	fGuest = paArgs[0].enmType == DBGCVAR_TYPE_NUMBER
2483	? pDbgc->fRegCtxGuest
2484	: DBGCVAR_ISGCPOINTER(paArgs[0].enmType);
2485
2486	bool fPAE, fLME, fPSE, fPGE, fNXE;
2487	uint64_t cr3 = fGuest
2488	? dbgcGetGuestPageMode(pDbgc, &fPAE, &fLME, &fPSE, &fPGE, &fNXE)
2489	: dbgcGetShadowPageMode(pDbgc, &fPAE, &fLME, &fPSE, &fPGE, &fNXE);
2490	const unsigned cbEntry = fPAE ? sizeof(X86PTEPAE) : sizeof(X86PTE);
2491
2492	/*
2493	* Setup default argument if none was specified.
2494	* Fix address / index confusion.
2495	*/
2496	DBGCVAR VarDefault;
2497	if (!cArgs)
2498	{
2499	if (pCmd->pszCmd[3] == 'a')
2500	{
2501	if (fLME \|\| fPAE)
2502	return DBGCCmdHlpPrintf(pCmdHlp, "Default argument for 'dpda' hasn't been fully implemented yet. Try with an address or use one of the other commands.\n");
2503	if (fGuest)
2504	DBGCVAR_INIT_GC_PHYS(&VarDefault, cr3);
2505	else
2506	DBGCVAR_INIT_HC_PHYS(&VarDefault, cr3);
2507	}
2508	else
2509	DBGCVAR_INIT_GC_FLAT(&VarDefault, 0);
2510	paArgs = &VarDefault;
2511	cArgs = 1;
2512	}
2513	else if (paArgs[0].enmType == DBGCVAR_TYPE_NUMBER)
2514	{
2515	/* If it's a number (not an address), it's an index, so convert it to an address. */
2516	Assert(pCmd->pszCmd[3] != 'a');
2517	VarDefault = paArgs[0];
2518	if (fPAE)
2519	return DBGCCmdHlpPrintf(pCmdHlp, "PDE indexing is only implemented for 32-bit paging.\n");
2520	if (VarDefault.u.u64Number >= PAGE_SIZE / cbEntry)
2521	return DBGCCmdHlpPrintf(pCmdHlp, "PDE index is out of range [0..%d].\n", PAGE_SIZE / cbEntry - 1);
2522	VarDefault.u.u64Number <<= X86_PD_SHIFT;
2523	VarDefault.enmType = DBGCVAR_TYPE_GC_FLAT;
2524	paArgs = &VarDefault;
2525	}
2526
2527	/*
2528	* Locate the PDE to start displaying at.
2529	*
2530	* The 'dpda' command takes the address of a PDE, while the others are guest
2531	* virtual address which PDEs should be displayed. So, 'dpda' is rather simple
2532	* while the others require us to do all the tedious walking thru the paging
2533	* hierarchy to find the intended PDE.
2534	*/
2535	unsigned iEntry = ~0U; /* The page directory index. ~0U for 'dpta'. */
2536	DBGCVAR VarGCPtr; /* The GC address corresponding to the current PDE (iEntry != ~0U). */
2537	DBGCVAR VarPDEAddr; /* The address of the current PDE. */
2538	unsigned cEntries; /* The number of entries to display. */
2539	unsigned cEntriesMax; /* The max number of entries to display. */
2540	int rc;
2541	if (pCmd->pszCmd[3] == 'a')
2542	{
2543	VarPDEAddr = paArgs[0];
2544	switch (VarPDEAddr.enmRangeType)
2545	{
2546	case DBGCVAR_RANGE_BYTES: cEntries = VarPDEAddr.u64Range / cbEntry; break;
2547	case DBGCVAR_RANGE_ELEMENTS: cEntries = VarPDEAddr.u64Range; break;
2548	default: cEntries = 10; break;
2549	}
2550	cEntriesMax = PAGE_SIZE / cbEntry;
2551	}
2552	else
2553	{
2554	/*
2555	* Determine the range.
2556	*/
2557	switch (paArgs[0].enmRangeType)
2558	{
2559	case DBGCVAR_RANGE_BYTES: cEntries = paArgs[0].u64Range / PAGE_SIZE; break;
2560	case DBGCVAR_RANGE_ELEMENTS: cEntries = paArgs[0].u64Range; break;
2561	default: cEntries = 10; break;
2562	}
2563
2564	/*
2565	* Normalize the input address, it must be a flat GC address.
2566	*/
2567	rc = DBGCCmdHlpEval(pCmdHlp, &VarGCPtr, "%%(%Dv)", &paArgs[0]);
2568	if (RT_FAILURE(rc))
2569	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "%%(%Dv)", &paArgs[0]);
2570	if (VarGCPtr.enmType == DBGCVAR_TYPE_HC_FLAT)
2571	{
2572	VarGCPtr.u.GCFlat = (uintptr_t)VarGCPtr.u.pvHCFlat;
2573	VarGCPtr.enmType = DBGCVAR_TYPE_GC_FLAT;
2574	}
2575	if (fPAE)
2576	VarGCPtr.u.GCFlat &= ~(((RTGCPTR)1 << X86_PD_PAE_SHIFT) - 1);
2577	else
2578	VarGCPtr.u.GCFlat &= ~(((RTGCPTR)1 << X86_PD_SHIFT) - 1);
2579
2580	/*
2581	* Do the paging walk until we get to the page directory.
2582	*/
2583	DBGCVAR VarCur;
2584	if (fGuest)
2585	DBGCVAR_INIT_GC_PHYS(&VarCur, cr3);
2586	else
2587	DBGCVAR_INIT_HC_PHYS(&VarCur, cr3);
2588	if (fLME)
2589	{
2590	/* Page Map Level 4 Lookup. */
2591	/* Check if it's a valid address first? */
2592	VarCur.u.u64Number &= X86_PTE_PAE_PG_MASK;
2593	VarCur.u.u64Number += (((uint64_t)VarGCPtr.u.GCFlat >> X86_PML4_SHIFT) & X86_PML4_MASK) * sizeof(X86PML4E);
2594	X86PML4E Pml4e;
2595	rc = pCmdHlp->pfnMemRead(pCmdHlp, &Pml4e, sizeof(Pml4e), &VarCur, NULL);
2596	if (RT_FAILURE(rc))
2597	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "Reading PML4E memory at %DV.\n", &VarCur);
2598	if (!Pml4e.n.u1Present)
2599	return DBGCCmdHlpPrintf(pCmdHlp, "Page directory pointer table is not present for %Dv.\n", &VarGCPtr);
2600
2601	VarCur.u.u64Number = Pml4e.u & X86_PML4E_PG_MASK;
2602	Assert(fPAE);
2603	}
2604	if (fPAE)
2605	{
2606	/* Page directory pointer table. */
2607	X86PDPE Pdpe;
2608	VarCur.u.u64Number += ((VarGCPtr.u.GCFlat >> X86_PDPT_SHIFT) & X86_PDPT_MASK_PAE) * sizeof(Pdpe);
2609	rc = pCmdHlp->pfnMemRead(pCmdHlp, &Pdpe, sizeof(Pdpe), &VarCur, NULL);
2610	if (RT_FAILURE(rc))
2611	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "Reading PDPE memory at %DV.\n", &VarCur);
2612	if (!Pdpe.n.u1Present)
2613	return DBGCCmdHlpPrintf(pCmdHlp, "Page directory is not present for %Dv.\n", &VarGCPtr);
2614
2615	iEntry = (VarGCPtr.u.GCFlat >> X86_PD_PAE_SHIFT) & X86_PD_PAE_MASK;
2616	VarPDEAddr = VarCur;
2617	VarPDEAddr.u.u64Number = Pdpe.u & X86_PDPE_PG_MASK;
2618	VarPDEAddr.u.u64Number += iEntry * sizeof(X86PDEPAE);
2619	}
2620	else
2621	{
2622	/* 32-bit legacy - CR3 == page directory. */
2623	iEntry = (VarGCPtr.u.GCFlat >> X86_PD_SHIFT) & X86_PD_MASK;
2624	VarPDEAddr = VarCur;
2625	VarPDEAddr.u.u64Number += iEntry * sizeof(X86PDE);
2626	}
2627	cEntriesMax = (PAGE_SIZE - iEntry) / cbEntry;
2628	}
2629
2630	/* adjust cEntries */
2631	cEntries = RT_MAX(1, cEntries);
2632	cEntries = RT_MIN(cEntries, cEntriesMax);
2633
2634	/*
2635	* The display loop.
2636	*/
2637	DBGCCmdHlpPrintf(pCmdHlp, iEntry != ~0U ? "%DV (index %#x):\n" : "%DV:\n",
2638	&VarPDEAddr, iEntry);
2639	do
2640	{
2641	/*
2642	* Read.
2643	*/
2644	X86PDEPAE Pde;
2645	Pde.u = 0;
2646	rc = pCmdHlp->pfnMemRead(pCmdHlp, &Pde, cbEntry, &VarPDEAddr, NULL);
2647	if (RT_FAILURE(rc))
2648	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "Reading PDE memory at %DV.\n", &VarPDEAddr);
2649
2650	/*
2651	* Display.
2652	*/
2653	if (iEntry != ~0U)
2654	{
2655	DBGCCmdHlpPrintf(pCmdHlp, "%03x %DV: ", iEntry, &VarGCPtr);
2656	iEntry++;
2657	}
2658	if (fPSE && Pde.b.u1Size)
2659	DBGCCmdHlpPrintf(pCmdHlp,
2660	fPAE
2661	? "%016llx big phys=%016llx %s %s %s %s %s avl=%02x %s %s %s %s %s"
2662	: "%08llx big phys=%08llx %s %s %s %s %s avl=%02x %s %s %s %s %s",
2663	Pde.u,
2664	Pde.u & X86_PDE_PAE_PG_MASK,
2665	Pde.b.u1Present ? "p " : "np",
2666	Pde.b.u1Write ? "w" : "r",
2667	Pde.b.u1User ? "u" : "s",
2668	Pde.b.u1Accessed ? "a " : "na",
2669	Pde.b.u1Dirty ? "d " : "nd",
2670	Pde.b.u3Available,
2671	Pde.b.u1Global ? (fPGE ? "g" : "G") : " ",
2672	Pde.b.u1WriteThru ? "pwt" : " ",
2673	Pde.b.u1CacheDisable ? "pcd" : " ",
2674	Pde.b.u1PAT ? "pat" : "",
2675	Pde.b.u1NoExecute ? (fNXE ? "nx" : "NX") : " ");
2676	else
2677	DBGCCmdHlpPrintf(pCmdHlp,
2678	fPAE
2679	? "%016llx 4kb phys=%016llx %s %s %s %s %s avl=%02x %s %s %s %s"
2680	: "%08llx 4kb phys=%08llx %s %s %s %s %s avl=%02x %s %s %s %s",
2681	Pde.u,
2682	Pde.u & X86_PDE_PAE_PG_MASK,
2683	Pde.n.u1Present ? "p " : "np",
2684	Pde.n.u1Write ? "w" : "r",
2685	Pde.n.u1User ? "u" : "s",
2686	Pde.n.u1Accessed ? "a " : "na",
2687	Pde.u & RT_BIT(6) ? "6 " : " ",
2688	Pde.n.u3Available,
2689	Pde.u & RT_BIT(8) ? "8" : " ",
2690	Pde.n.u1WriteThru ? "pwt" : " ",
2691	Pde.n.u1CacheDisable ? "pcd" : " ",
2692	Pde.u & RT_BIT(7) ? "7" : "",
2693	Pde.n.u1NoExecute ? (fNXE ? "nx" : "NX") : " ");
2694	if (Pde.u & UINT64_C(0x7fff000000000000))
2695	DBGCCmdHlpPrintf(pCmdHlp, " weird=%RX64", (Pde.u & UINT64_C(0x7fff000000000000)));
2696	rc = DBGCCmdHlpPrintf(pCmdHlp, "\n");
2697	if (RT_FAILURE(rc))
2698	return rc;
2699
2700	/*
2701	* Advance.
2702	*/
2703	VarPDEAddr.u.u64Number += cbEntry;
2704	if (iEntry != ~0U)
2705	VarGCPtr.u.GCFlat += fPAE ? RT_BIT_32(X86_PD_PAE_SHIFT) : RT_BIT_32(X86_PD_SHIFT);
2706	} while (cEntries-- > 0);
2707
2708	return VINF_SUCCESS;
2709	}
2710
2711
2712	/**
2713	* @interface_method_impl{FNDBCCMD, The 'dpdb' command.}
2714	*/
2715	static DECLCALLBACK(int) dbgcCmdDumpPageDirBoth(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
2716	{
2717	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
2718	int rc1 = pCmdHlp->pfnExec(pCmdHlp, "dpdg %DV", &paArgs[0]);
2719	int rc2 = pCmdHlp->pfnExec(pCmdHlp, "dpdh %DV", &paArgs[0]);
2720	if (RT_FAILURE(rc1))
2721	return rc1;
2722	NOREF(pCmd); NOREF(paArgs); NOREF(cArgs);
2723	return rc2;
2724	}
2725
2726
2727	/**
2728	* @interface_method_impl{FNDBCCMD, The 'dph*' commands and main part of 'm'.}
2729	*/
2730	static DECLCALLBACK(int) dbgcCmdDumpPageHierarchy(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
2731	{
2732	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
2733	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
2734
2735	/*
2736	* Figure the context and base flags.
2737	*/
2738	uint32_t fFlags = DBGFPGDMP_FLAGS_PAGE_INFO \| DBGFPGDMP_FLAGS_PRINT_CR3;
2739	if (pCmd->pszCmd[0] == 'm')
2740	fFlags \|= DBGFPGDMP_FLAGS_GUEST \| DBGFPGDMP_FLAGS_SHADOW;
2741	else if (pCmd->pszCmd[3] == '\0')
2742	fFlags \|= pDbgc->fRegCtxGuest ? DBGFPGDMP_FLAGS_GUEST : DBGFPGDMP_FLAGS_SHADOW;
2743	else if (pCmd->pszCmd[3] == 'g')
2744	fFlags \|= DBGFPGDMP_FLAGS_GUEST;
2745	else if (pCmd->pszCmd[3] == 'h')
2746	fFlags \|= DBGFPGDMP_FLAGS_SHADOW;
2747	else
2748	AssertFailed();
2749
2750	if (pDbgc->cPagingHierarchyDumps == 0)
2751	fFlags \|= DBGFPGDMP_FLAGS_HEADER;
2752	pDbgc->cPagingHierarchyDumps = (pDbgc->cPagingHierarchyDumps + 1) % 42;
2753
2754	/*
2755	* Get the range.
2756	*/
2757	PCDBGCVAR pRange = cArgs > 0 ? &paArgs[0] : pDbgc->pLastPos;
2758	RTGCPTR GCPtrFirst = NIL_RTGCPTR;
2759	int rc = DBGCCmdHlpVarToFlatAddr(pCmdHlp, pRange, &GCPtrFirst);
2760	if (RT_FAILURE(rc))
2761	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Failed to convert %DV to a flat address: %Rrc", pRange, rc);
2762
2763	uint64_t cbRange;
2764	rc = DBGCCmdHlpVarGetRange(pCmdHlp, pRange, PAGE_SIZE, PAGE_SIZE * 8, &cbRange);
2765	if (RT_FAILURE(rc))
2766	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Failed to obtain the range of %DV: %Rrc", pRange, rc);
2767
2768	RTGCPTR GCPtrLast = RTGCPTR_MAX - GCPtrFirst;
2769	if (cbRange >= GCPtrLast)
2770	GCPtrLast = RTGCPTR_MAX;
2771	else if (!cbRange)
2772	GCPtrLast = GCPtrFirst;
2773	else
2774	GCPtrLast = GCPtrFirst + cbRange - 1;
2775
2776	/*
2777	* Do we have a CR3?
2778	*/
2779	uint64_t cr3 = 0;
2780	if (cArgs > 1)
2781	{
2782	if ((fFlags & (DBGFPGDMP_FLAGS_GUEST \| DBGFPGDMP_FLAGS_SHADOW)) == (DBGFPGDMP_FLAGS_GUEST \| DBGFPGDMP_FLAGS_SHADOW))
2783	return DBGCCmdHlpFail(pCmdHlp, pCmd, "No CR3 or mode arguments when dumping both context, please.");
2784	if (paArgs[1].enmType != DBGCVAR_TYPE_NUMBER)
2785	return DBGCCmdHlpFail(pCmdHlp, pCmd, "The CR3 argument is not a number: %DV", &paArgs[1]);
2786	cr3 = paArgs[1].u.u64Number;
2787	}
2788	else
2789	fFlags \|= DBGFPGDMP_FLAGS_CURRENT_CR3;
2790
2791	/*
2792	* Do we have a mode?
2793	*/
2794	if (cArgs > 2)
2795	{
2796	if (paArgs[2].enmType != DBGCVAR_TYPE_STRING)
2797	return DBGCCmdHlpFail(pCmdHlp, pCmd, "The mode argument is not a string: %DV", &paArgs[2]);
2798	static const struct MODETOFLAGS
2799	{
2800	const char *pszName;
2801	uint32_t fFlags;
2802	} s_aModeToFlags[] =
2803	{
2804	{ "ept", DBGFPGDMP_FLAGS_EPT },
2805	{ "legacy", 0 },
2806	{ "legacy-np", DBGFPGDMP_FLAGS_NP },
2807	{ "pse", DBGFPGDMP_FLAGS_PSE },
2808	{ "pse-np", DBGFPGDMP_FLAGS_PSE \| DBGFPGDMP_FLAGS_NP },
2809	{ "pae", DBGFPGDMP_FLAGS_PSE \| DBGFPGDMP_FLAGS_PAE },
2810	{ "pae-np", DBGFPGDMP_FLAGS_PSE \| DBGFPGDMP_FLAGS_PAE \| DBGFPGDMP_FLAGS_NP },
2811	{ "pae-nx", DBGFPGDMP_FLAGS_PSE \| DBGFPGDMP_FLAGS_PAE \| DBGFPGDMP_FLAGS_NXE },
2812	{ "pae-nx-np", DBGFPGDMP_FLAGS_PSE \| DBGFPGDMP_FLAGS_PAE \| DBGFPGDMP_FLAGS_NXE \| DBGFPGDMP_FLAGS_NP },
2813	{ "long", DBGFPGDMP_FLAGS_PSE \| DBGFPGDMP_FLAGS_PAE \| DBGFPGDMP_FLAGS_LME },
2814	{ "long-np", DBGFPGDMP_FLAGS_PSE \| DBGFPGDMP_FLAGS_PAE \| DBGFPGDMP_FLAGS_LME \| DBGFPGDMP_FLAGS_NP },
2815	{ "long-nx", DBGFPGDMP_FLAGS_PSE \| DBGFPGDMP_FLAGS_PAE \| DBGFPGDMP_FLAGS_LME \| DBGFPGDMP_FLAGS_NXE },
2816	{ "long-nx-np", DBGFPGDMP_FLAGS_PSE \| DBGFPGDMP_FLAGS_PAE \| DBGFPGDMP_FLAGS_LME \| DBGFPGDMP_FLAGS_NXE \| DBGFPGDMP_FLAGS_NP }
2817	};
2818	int i = RT_ELEMENTS(s_aModeToFlags);
2819	while (i-- > 0)
2820	if (!strcmp(s_aModeToFlags[i].pszName, paArgs[2].u.pszString))
2821	{
2822	fFlags \|= s_aModeToFlags[i].fFlags;
2823	break;
2824	}
2825	if (i < 0)
2826	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Unknown mode: \"%s\"", paArgs[2].u.pszString);
2827	}
2828	else
2829	fFlags \|= DBGFPGDMP_FLAGS_CURRENT_MODE;
2830
2831	/*
2832	* Call the worker.
2833	*/
2834	rc = DBGFR3PagingDumpEx(pUVM, pDbgc->idCpu, fFlags, cr3, GCPtrFirst, GCPtrLast, 99 /cMaxDepth/,
2835	DBGCCmdHlpGetDbgfOutputHlp(pCmdHlp));
2836	if (RT_FAILURE(rc))
2837	return DBGCCmdHlpFail(pCmdHlp, pCmd, "DBGFR3PagingDumpEx: %Rrc\n", rc);
2838	return VINF_SUCCESS;
2839	}
2840
2841
2842
2843	/**
2844	* @interface_method_impl{FNDBCCMD, The 'dpg*' commands.}
2845	*/
2846	static DECLCALLBACK(int) dbgcCmdDumpPageTable(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
2847	{
2848	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
2849
2850	/*
2851	* Validate input.
2852	*/
2853	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs == 1);
2854	if (pCmd->pszCmd[3] == 'a')
2855	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, DBGCVAR_ISPOINTER(paArgs[0].enmType));
2856	else
2857	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, paArgs[0].enmType == DBGCVAR_TYPE_NUMBER
2858	\|\| DBGCVAR_ISPOINTER(paArgs[0].enmType));
2859	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
2860
2861	/*
2862	* Guest or shadow page tables? Get the paging parameters.
2863	*/
2864	bool fGuest = pCmd->pszCmd[3] != 'h';
2865	if (!pCmd->pszCmd[3] \|\| pCmd->pszCmd[3] == 'a')
2866	fGuest = paArgs[0].enmType == DBGCVAR_TYPE_NUMBER
2867	? pDbgc->fRegCtxGuest
2868	: DBGCVAR_ISGCPOINTER(paArgs[0].enmType);
2869
2870	bool fPAE, fLME, fPSE, fPGE, fNXE;
2871	uint64_t cr3 = fGuest
2872	? dbgcGetGuestPageMode(pDbgc, &fPAE, &fLME, &fPSE, &fPGE, &fNXE)
2873	: dbgcGetShadowPageMode(pDbgc, &fPAE, &fLME, &fPSE, &fPGE, &fNXE);
2874	const unsigned cbEntry = fPAE ? sizeof(X86PTEPAE) : sizeof(X86PTE);
2875
2876	/*
2877	* Locate the PTE to start displaying at.
2878	*
2879	* The 'dpta' command takes the address of a PTE, while the others are guest
2880	* virtual address which PTEs should be displayed. So, 'pdta' is rather simple
2881	* while the others require us to do all the tedious walking thru the paging
2882	* hierarchy to find the intended PTE.
2883	*/
2884	unsigned iEntry = ~0U; /* The page table index. ~0U for 'dpta'. */
2885	DBGCVAR VarGCPtr; /* The GC address corresponding to the current PTE (iEntry != ~0U). */
2886	DBGCVAR VarPTEAddr; /* The address of the current PTE. */
2887	unsigned cEntries; /* The number of entries to display. */
2888	unsigned cEntriesMax; /* The max number of entries to display. */
2889	int rc;
2890	if (pCmd->pszCmd[3] == 'a')
2891	{
2892	VarPTEAddr = paArgs[0];
2893	switch (VarPTEAddr.enmRangeType)
2894	{
2895	case DBGCVAR_RANGE_BYTES: cEntries = VarPTEAddr.u64Range / cbEntry; break;
2896	case DBGCVAR_RANGE_ELEMENTS: cEntries = VarPTEAddr.u64Range; break;
2897	default: cEntries = 10; break;
2898	}
2899	cEntriesMax = PAGE_SIZE / cbEntry;
2900	}
2901	else
2902	{
2903	/*
2904	* Determine the range.
2905	*/
2906	switch (paArgs[0].enmRangeType)
2907	{
2908	case DBGCVAR_RANGE_BYTES: cEntries = paArgs[0].u64Range / PAGE_SIZE; break;
2909	case DBGCVAR_RANGE_ELEMENTS: cEntries = paArgs[0].u64Range; break;
2910	default: cEntries = 10; break;
2911	}
2912
2913	/*
2914	* Normalize the input address, it must be a flat GC address.
2915	*/
2916	rc = DBGCCmdHlpEval(pCmdHlp, &VarGCPtr, "%%(%Dv)", &paArgs[0]);
2917	if (RT_FAILURE(rc))
2918	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "%%(%Dv)", &paArgs[0]);
2919	if (VarGCPtr.enmType == DBGCVAR_TYPE_HC_FLAT)
2920	{
2921	VarGCPtr.u.GCFlat = (uintptr_t)VarGCPtr.u.pvHCFlat;
2922	VarGCPtr.enmType = DBGCVAR_TYPE_GC_FLAT;
2923	}
2924	VarGCPtr.u.GCFlat &= ~(RTGCPTR)PAGE_OFFSET_MASK;
2925
2926	/*
2927	* Do the paging walk until we get to the page table.
2928	*/
2929	DBGCVAR VarCur;
2930	if (fGuest)
2931	DBGCVAR_INIT_GC_PHYS(&VarCur, cr3);
2932	else
2933	DBGCVAR_INIT_HC_PHYS(&VarCur, cr3);
2934	if (fLME)
2935	{
2936	/* Page Map Level 4 Lookup. */
2937	/* Check if it's a valid address first? */
2938	VarCur.u.u64Number &= X86_PTE_PAE_PG_MASK;
2939	VarCur.u.u64Number += (((uint64_t)VarGCPtr.u.GCFlat >> X86_PML4_SHIFT) & X86_PML4_MASK) * sizeof(X86PML4E);
2940	X86PML4E Pml4e;
2941	rc = pCmdHlp->pfnMemRead(pCmdHlp, &Pml4e, sizeof(Pml4e), &VarCur, NULL);
2942	if (RT_FAILURE(rc))
2943	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "Reading PML4E memory at %DV.\n", &VarCur);
2944	if (!Pml4e.n.u1Present)
2945	return DBGCCmdHlpPrintf(pCmdHlp, "Page directory pointer table is not present for %Dv.\n", &VarGCPtr);
2946
2947	VarCur.u.u64Number = Pml4e.u & X86_PML4E_PG_MASK;
2948	Assert(fPAE);
2949	}
2950	if (fPAE)
2951	{
2952	/* Page directory pointer table. */
2953	X86PDPE Pdpe;
2954	VarCur.u.u64Number += ((VarGCPtr.u.GCFlat >> X86_PDPT_SHIFT) & X86_PDPT_MASK_PAE) * sizeof(Pdpe);
2955	rc = pCmdHlp->pfnMemRead(pCmdHlp, &Pdpe, sizeof(Pdpe), &VarCur, NULL);
2956	if (RT_FAILURE(rc))
2957	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "Reading PDPE memory at %DV.\n", &VarCur);
2958	if (!Pdpe.n.u1Present)
2959	return DBGCCmdHlpPrintf(pCmdHlp, "Page directory is not present for %Dv.\n", &VarGCPtr);
2960
2961	VarCur.u.u64Number = Pdpe.u & X86_PDPE_PG_MASK;
2962
2963	/* Page directory (PAE). */
2964	X86PDEPAE Pde;
2965	VarCur.u.u64Number += ((VarGCPtr.u.GCFlat >> X86_PD_PAE_SHIFT) & X86_PD_PAE_MASK) * sizeof(Pde);
2966	rc = pCmdHlp->pfnMemRead(pCmdHlp, &Pde, sizeof(Pde), &VarCur, NULL);
2967	if (RT_FAILURE(rc))
2968	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "Reading PDE memory at %DV.\n", &VarCur);
2969	if (!Pde.n.u1Present)
2970	return DBGCCmdHlpPrintf(pCmdHlp, "Page table is not present for %Dv.\n", &VarGCPtr);
2971	if (fPSE && Pde.n.u1Size)
2972	return pCmdHlp->pfnExec(pCmdHlp, "dpd%s %Dv L3", &pCmd->pszCmd[3], &VarGCPtr);
2973
2974	iEntry = (VarGCPtr.u.GCFlat >> X86_PT_PAE_SHIFT) & X86_PT_PAE_MASK;
2975	VarPTEAddr = VarCur;
2976	VarPTEAddr.u.u64Number = Pde.u & X86_PDE_PAE_PG_MASK;
2977	VarPTEAddr.u.u64Number += iEntry * sizeof(X86PTEPAE);
2978	}
2979	else
2980	{
2981	/* Page directory (legacy). */
2982	X86PDE Pde;
2983	VarCur.u.u64Number += ((VarGCPtr.u.GCFlat >> X86_PD_SHIFT) & X86_PD_MASK) * sizeof(Pde);
2984	rc = pCmdHlp->pfnMemRead(pCmdHlp, &Pde, sizeof(Pde), &VarCur, NULL);
2985	if (RT_FAILURE(rc))
2986	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "Reading PDE memory at %DV.\n", &VarCur);
2987	if (!Pde.n.u1Present)
2988	return DBGCCmdHlpPrintf(pCmdHlp, "Page table is not present for %Dv.\n", &VarGCPtr);
2989	if (fPSE && Pde.n.u1Size)
2990	return pCmdHlp->pfnExec(pCmdHlp, "dpd%s %Dv L3", &pCmd->pszCmd[3], &VarGCPtr);
2991
2992	iEntry = (VarGCPtr.u.GCFlat >> X86_PT_SHIFT) & X86_PT_MASK;
2993	VarPTEAddr = VarCur;
2994	VarPTEAddr.u.u64Number = Pde.u & X86_PDE_PG_MASK;
2995	VarPTEAddr.u.u64Number += iEntry * sizeof(X86PTE);
2996	}
2997	cEntriesMax = (PAGE_SIZE - iEntry) / cbEntry;
2998	}
2999
3000	/* adjust cEntries */
3001	cEntries = RT_MAX(1, cEntries);
3002	cEntries = RT_MIN(cEntries, cEntriesMax);
3003
3004	/*
3005	* The display loop.
3006	*/
3007	DBGCCmdHlpPrintf(pCmdHlp, iEntry != ~0U ? "%DV (base %DV / index %#x):\n" : "%DV:\n",
3008	&VarPTEAddr, &VarGCPtr, iEntry);
3009	do
3010	{
3011	/*
3012	* Read.
3013	*/
3014	X86PTEPAE Pte;
3015	Pte.u = 0;
3016	rc = pCmdHlp->pfnMemRead(pCmdHlp, &Pte, cbEntry, &VarPTEAddr, NULL);
3017	if (RT_FAILURE(rc))
3018	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "Reading PTE memory at %DV.\n", &VarPTEAddr);
3019
3020	/*
3021	* Display.
3022	*/
3023	if (iEntry != ~0U)
3024	{
3025	DBGCCmdHlpPrintf(pCmdHlp, "%03x %DV: ", iEntry, &VarGCPtr);
3026	iEntry++;
3027	}
3028	DBGCCmdHlpPrintf(pCmdHlp,
3029	fPAE
3030	? "%016llx 4kb phys=%016llx %s %s %s %s %s avl=%02x %s %s %s %s %s"
3031	: "%08llx 4kb phys=%08llx %s %s %s %s %s avl=%02x %s %s %s %s %s",
3032	Pte.u,
3033	Pte.u & X86_PTE_PAE_PG_MASK,
3034	Pte.n.u1Present ? "p " : "np",
3035	Pte.n.u1Write ? "w" : "r",
3036	Pte.n.u1User ? "u" : "s",
3037	Pte.n.u1Accessed ? "a " : "na",
3038	Pte.n.u1Dirty ? "d " : "nd",
3039	Pte.n.u3Available,
3040	Pte.n.u1Global ? (fPGE ? "g" : "G") : " ",
3041	Pte.n.u1WriteThru ? "pwt" : " ",
3042	Pte.n.u1CacheDisable ? "pcd" : " ",
3043	Pte.n.u1PAT ? "pat" : " ",
3044	Pte.n.u1NoExecute ? (fNXE ? "nx" : "NX") : " "
3045	);
3046	if (Pte.u & UINT64_C(0x7fff000000000000))
3047	DBGCCmdHlpPrintf(pCmdHlp, " weird=%RX64", (Pte.u & UINT64_C(0x7fff000000000000)));
3048	rc = DBGCCmdHlpPrintf(pCmdHlp, "\n");
3049	if (RT_FAILURE(rc))
3050	return rc;
3051
3052	/*
3053	* Advance.
3054	*/
3055	VarPTEAddr.u.u64Number += cbEntry;
3056	if (iEntry != ~0U)
3057	VarGCPtr.u.GCFlat += PAGE_SIZE;
3058	} while (cEntries-- > 0);
3059
3060	return VINF_SUCCESS;
3061	}
3062
3063
3064	/**
3065	* @interface_method_impl{FNDBCCMD, The 'dptb' command.}
3066	*/
3067	static DECLCALLBACK(int) dbgcCmdDumpPageTableBoth(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3068	{
3069	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3070	int rc1 = pCmdHlp->pfnExec(pCmdHlp, "dptg %DV", &paArgs[0]);
3071	int rc2 = pCmdHlp->pfnExec(pCmdHlp, "dpth %DV", &paArgs[0]);
3072	if (RT_FAILURE(rc1))
3073	return rc1;
3074	NOREF(pCmd); NOREF(cArgs);
3075	return rc2;
3076	}
3077
3078
3079	/**
3080	* @interface_method_impl{FNDBCCMD, The 'dt' command.}
3081	*/
3082	static DECLCALLBACK(int) dbgcCmdDumpTSS(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3083	{
3084	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
3085	int rc;
3086
3087	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3088	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs <= 1);
3089	if (cArgs == 1)
3090	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, paArgs[0].enmType != DBGCVAR_TYPE_STRING
3091	&& paArgs[0].enmType != DBGCVAR_TYPE_SYMBOL);
3092
3093	/*
3094	* Check if the command indicates the type.
3095	*/
3096	enum { kTss16, kTss32, kTss64, kTssToBeDetermined } enmTssType = kTssToBeDetermined;
3097	if (!strcmp(pCmd->pszCmd, "dt16"))
3098	enmTssType = kTss16;
3099	else if (!strcmp(pCmd->pszCmd, "dt32"))
3100	enmTssType = kTss32;
3101	else if (!strcmp(pCmd->pszCmd, "dt64"))
3102	enmTssType = kTss64;
3103
3104	/*
3105	* We can get a TSS selector (number), a far pointer using a TSS selector, or some kind of TSS pointer.
3106	*/
3107	uint32_t SelTss = UINT32_MAX;
3108	DBGCVAR VarTssAddr;
3109	if (cArgs == 0)
3110	{
3111	/** @todo consider querying the hidden bits instead (missing API). */
3112	uint16_t SelTR;
3113	rc = DBGFR3RegCpuQueryU16(pUVM, pDbgc->idCpu, DBGFREG_TR, &SelTR);
3114	if (RT_FAILURE(rc))
3115	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Failed to query TR, rc=%Rrc\n", rc);
3116	DBGCVAR_INIT_GC_FAR(&VarTssAddr, SelTR, 0);
3117	SelTss = SelTR;
3118	}
3119	else if (paArgs[0].enmType == DBGCVAR_TYPE_NUMBER)
3120	{
3121	if (paArgs[0].u.u64Number < 0xffff)
3122	DBGCVAR_INIT_GC_FAR(&VarTssAddr, (RTSEL)paArgs[0].u.u64Number, 0);
3123	else
3124	{
3125	if (paArgs[0].enmRangeType == DBGCVAR_RANGE_ELEMENTS)
3126	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Element count doesn't combine with a TSS address.\n");
3127	DBGCVAR_INIT_GC_FLAT(&VarTssAddr, paArgs[0].u.u64Number);
3128	if (paArgs[0].enmRangeType == DBGCVAR_RANGE_BYTES)
3129	{
3130	VarTssAddr.enmRangeType = paArgs[0].enmRangeType;
3131	VarTssAddr.u64Range = paArgs[0].u64Range;
3132	}
3133	}
3134	}
3135	else
3136	VarTssAddr = paArgs[0];
3137
3138	/*
3139	* Deal with TSS:ign by means of the GDT.
3140	*/
3141	if (VarTssAddr.enmType == DBGCVAR_TYPE_GC_FAR)
3142	{
3143	SelTss = VarTssAddr.u.GCFar.sel;
3144	DBGFSELINFO SelInfo;
3145	rc = DBGFR3SelQueryInfo(pUVM, pDbgc->idCpu, VarTssAddr.u.GCFar.sel, DBGFSELQI_FLAGS_DT_GUEST, &SelInfo);
3146	if (RT_FAILURE(rc))
3147	return DBGCCmdHlpFail(pCmdHlp, pCmd, "DBGFR3SelQueryInfo(,%u,%d,,) -> %Rrc.\n",
3148	pDbgc->idCpu, VarTssAddr.u.GCFar.sel, rc);
3149
3150	if (SelInfo.u.Raw.Gen.u1DescType)
3151	return DBGCCmdHlpFail(pCmdHlp, pCmd, "%04x is not a TSS selector. (!sys)\n", VarTssAddr.u.GCFar.sel);
3152
3153	switch (SelInfo.u.Raw.Gen.u4Type)
3154	{
3155	case X86_SEL_TYPE_SYS_286_TSS_BUSY:
3156	case X86_SEL_TYPE_SYS_286_TSS_AVAIL:
3157	if (enmTssType == kTssToBeDetermined)
3158	enmTssType = kTss16;
3159	break;
3160
3161	case X86_SEL_TYPE_SYS_386_TSS_BUSY: /* AMD64 too */
3162	case X86_SEL_TYPE_SYS_386_TSS_AVAIL:
3163	if (enmTssType == kTssToBeDetermined)
3164	enmTssType = SelInfo.fFlags & DBGFSELINFO_FLAGS_LONG_MODE ? kTss64 : kTss32;
3165	break;
3166
3167	default:
3168	return DBGCCmdHlpFail(pCmdHlp, pCmd, "%04x is not a TSS selector. (type=%x)\n",
3169	VarTssAddr.u.GCFar.sel, SelInfo.u.Raw.Gen.u4Type);
3170	}
3171
3172	DBGCVAR_INIT_GC_FLAT(&VarTssAddr, SelInfo.GCPtrBase);
3173	DBGCVAR_SET_RANGE(&VarTssAddr, DBGCVAR_RANGE_BYTES, RT_MAX(SelInfo.cbLimit + 1, SelInfo.cbLimit));
3174	}
3175
3176	/*
3177	* Determine the TSS type if none is currently given.
3178	*/
3179	if (enmTssType == kTssToBeDetermined)
3180	{
3181	if ( VarTssAddr.u64Range > 0
3182	&& VarTssAddr.u64Range < sizeof(X86TSS32) - 4)
3183	enmTssType = kTss16;
3184	else
3185	{
3186	uint64_t uEfer;
3187	rc = DBGFR3RegCpuQueryU64(pUVM, pDbgc->idCpu, DBGFREG_MSR_K6_EFER, &uEfer);
3188	if ( RT_FAILURE(rc)
3189	\|\| !(uEfer & MSR_K6_EFER_LMA) )
3190	enmTssType = kTss32;
3191	else
3192	enmTssType = kTss64;
3193	}
3194	}
3195
3196	/*
3197	* Figure the min/max sizes.
3198	* ASSUMES max TSS size is 64 KB.
3199	*/
3200	uint32_t cbTssMin;
3201	uint32_t cbTssMax;
3202	switch (enmTssType)
3203	{
3204	case kTss16:
3205	cbTssMin = cbTssMax = sizeof(X86TSS16);
3206	break;
3207	case kTss32:
3208	cbTssMin = RT_OFFSETOF(X86TSS32, IntRedirBitmap);
3209	cbTssMax = _64K;
3210	break;
3211	case kTss64:
3212	cbTssMin = RT_OFFSETOF(X86TSS64, IntRedirBitmap);
3213	cbTssMax = _64K;
3214	break;
3215	default:
3216	AssertFailedReturn(VERR_INTERNAL_ERROR);
3217	}
3218	uint32_t cbTss = VarTssAddr.enmRangeType == DBGCVAR_RANGE_BYTES ? (uint32_t)VarTssAddr.u64Range : 0;
3219	if (cbTss == 0)
3220	cbTss = cbTssMin;
3221	else if (cbTss < cbTssMin)
3222	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Minimum TSS size is %u bytes, you specified %llu (%llx) bytes.\n",
3223	cbTssMin, VarTssAddr.u64Range, VarTssAddr.u64Range);
3224	else if (cbTss > cbTssMax)
3225	cbTss = cbTssMax;
3226	DBGCVAR_SET_RANGE(&VarTssAddr, DBGCVAR_RANGE_BYTES, cbTss);
3227
3228	/*
3229	* Read the TSS into a temporary buffer.
3230	*/
3231	uint8_t abBuf[_64K];
3232	size_t cbTssRead;
3233	rc = DBGCCmdHlpMemRead(pCmdHlp, abBuf, cbTss, &VarTssAddr, &cbTssRead);
3234	if (RT_FAILURE(rc))
3235	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Failed to read TSS at %Dv: %Rrc\n", &VarTssAddr, rc);
3236	if (cbTssRead < cbTssMin)
3237	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Failed to read essential parts of the TSS (read %zu, min %zu).\n",
3238	cbTssRead, cbTssMin);
3239	if (cbTssRead < cbTss)
3240	memset(&abBuf[cbTssRead], 0xff, cbTss - cbTssRead);
3241
3242
3243	/*
3244	* Format the TSS.
3245	*/
3246	uint16_t offIoBitmap;
3247	switch (enmTssType)
3248	{
3249	case kTss16:
3250	{
3251	PCX86TSS16 pTss = (PCX86TSS16)&abBuf[0];
3252	if (SelTss != UINT32_MAX)
3253	DBGCCmdHlpPrintf(pCmdHlp, "%04x TSS16 at %Dv\n", SelTss, &VarTssAddr);
3254	else
3255	DBGCCmdHlpPrintf(pCmdHlp, "TSS16 at %Dv\n", &VarTssAddr);
3256	DBGCCmdHlpPrintf(pCmdHlp,
3257	"ax=%04x bx=%04x cx=%04x dx=%04x si=%04x di=%04x\n"
3258	"ip=%04x sp=%04x bp=%04x\n"
3259	"cs=%04x ss=%04x ds=%04x es=%04x flags=%04x\n"
3260	"ss:sp0=%04x:%04x ss:sp1=%04x:%04x ss:sp2=%04x:%04x\n"
3261	"prev=%04x ldtr=%04x\n"
3262	,
3263	pTss->ax, pTss->bx, pTss->cx, pTss->dx, pTss->si, pTss->di,
3264	pTss->ip, pTss->sp, pTss->bp,
3265	pTss->cs, pTss->ss, pTss->ds, pTss->es, pTss->flags,
3266	pTss->ss0, pTss->sp0, pTss->ss1, pTss->sp1, pTss->ss2, pTss->sp2,
3267	pTss->selPrev, pTss->selLdt);
3268	if (pTss->cs != 0)
3269	pCmdHlp->pfnExec(pCmdHlp, "u %04x:%04x L 0", pTss->cs, pTss->ip);
3270	offIoBitmap = 0;
3271	break;
3272	}
3273
3274	case kTss32:
3275	{
3276	PCX86TSS32 pTss = (PCX86TSS32)&abBuf[0];
3277	if (SelTss != UINT32_MAX)
3278	DBGCCmdHlpPrintf(pCmdHlp, "%04x TSS32 at %Dv (min=%04x)\n", SelTss, &VarTssAddr, cbTssMin);
3279	else
3280	DBGCCmdHlpPrintf(pCmdHlp, "TSS32 at %Dv (min=%04x)\n", &VarTssAddr, cbTssMin);
3281	DBGCCmdHlpPrintf(pCmdHlp,
3282	"eax=%08x bx=%08x ecx=%08x edx=%08x esi=%08x edi=%08x\n"
3283	"eip=%08x esp=%08x ebp=%08x\n"
3284	"cs=%04x ss=%04x ds=%04x es=%04x fs=%04x gs=%04x eflags=%08x\n"
3285	"ss:esp0=%04x:%08x ss:esp1=%04x:%08x ss:esp2=%04x:%08x\n"
3286	"prev=%04x ldtr=%04x cr3=%08x debug=%u iomap=%04x\n"
3287	,
3288	pTss->eax, pTss->ebx, pTss->ecx, pTss->edx, pTss->esi, pTss->edi,
3289	pTss->eip, pTss->esp, pTss->ebp,
3290	pTss->cs, pTss->ss, pTss->ds, pTss->es, pTss->fs, pTss->gs, pTss->eflags,
3291	pTss->ss0, pTss->esp0, pTss->ss1, pTss->esp1, pTss->ss2, pTss->esp2,
3292	pTss->selPrev, pTss->selLdt, pTss->cr3, pTss->fDebugTrap, pTss->offIoBitmap);
3293	if (pTss->cs != 0)
3294	pCmdHlp->pfnExec(pCmdHlp, "u %04x:%08x L 0", pTss->cs, pTss->eip);
3295	offIoBitmap = pTss->offIoBitmap;
3296	break;
3297	}
3298
3299	case kTss64:
3300	{
3301	PCX86TSS64 pTss = (PCX86TSS64)&abBuf[0];
3302	if (SelTss != UINT32_MAX)
3303	DBGCCmdHlpPrintf(pCmdHlp, "%04x TSS64 at %Dv (min=%04x)\n", SelTss, &VarTssAddr, cbTssMin);
3304	else
3305	DBGCCmdHlpPrintf(pCmdHlp, "TSS64 at %Dv (min=%04x)\n", &VarTssAddr, cbTssMin);
3306	DBGCCmdHlpPrintf(pCmdHlp,
3307	"rsp0=%016RX16 rsp1=%016RX16 rsp2=%016RX16\n"
3308	"ist1=%016RX16 ist2=%016RX16\n"
3309	"ist3=%016RX16 ist4=%016RX16\n"
3310	"ist5=%016RX16 ist6=%016RX16\n"
3311	"ist7=%016RX16 iomap=%04x\n"
3312	,
3313	pTss->rsp0, pTss->rsp1, pTss->rsp2,
3314	pTss->ist1, pTss->ist2,
3315	pTss->ist3, pTss->ist4,
3316	pTss->ist5, pTss->ist6,
3317	pTss->ist7, pTss->offIoBitmap);
3318	offIoBitmap = pTss->offIoBitmap;
3319	break;
3320	}
3321
3322	default:
3323	AssertFailedReturn(VERR_INTERNAL_ERROR);
3324	}
3325
3326	/*
3327	* Dump the interrupt redirection bitmap.
3328	*/
3329	if (enmTssType != kTss16)
3330	{
3331	if ( offIoBitmap > cbTssMin
3332	&& offIoBitmap < cbTss) /** @todo check exactly what the edge cases are here. */
3333	{
3334	if (offIoBitmap - cbTssMin >= 32)
3335	{
3336	DBGCCmdHlpPrintf(pCmdHlp, "Interrupt redirection:\n");
3337	uint8_t const *pbIntRedirBitmap = &abBuf[offIoBitmap - 32];
3338	uint32_t iStart = 0;
3339	bool fPrev = ASMBitTest(pbIntRedirBitmap, 0); /* LE/BE issue */
3340	for (uint32_t i = 0; i < 256; i++)
3341	{
3342	bool fThis = ASMBitTest(pbIntRedirBitmap, i);
3343	if (fThis != fPrev)
3344	{
3345	DBGCCmdHlpPrintf(pCmdHlp, "%02x-%02x %s\n", iStart, i - 1, fPrev ? "Protected mode" : "Redirected");
3346	fPrev = fThis;
3347	iStart = i;
3348	}
3349	}
3350	if (iStart != 255)
3351	DBGCCmdHlpPrintf(pCmdHlp, "%02x-%02x %s\n", iStart, 255, fPrev ? "Protected mode" : "Redirected");
3352	}
3353	else
3354	DBGCCmdHlpPrintf(pCmdHlp, "Invalid interrupt redirection bitmap size: %u (%#x), expected 32 bytes.\n",
3355	offIoBitmap - cbTssMin, offIoBitmap - cbTssMin);
3356	}
3357	else if (offIoBitmap > 0)
3358	DBGCCmdHlpPrintf(pCmdHlp, "No interrupt redirection bitmap (-%#x)\n", cbTssMin - offIoBitmap);
3359	else
3360	DBGCCmdHlpPrintf(pCmdHlp, "No interrupt redirection bitmap\n");
3361	}
3362
3363	/*
3364	* Dump the I/O permission bitmap if present. The IOPM cannot start below offset 0x64
3365	* (that applies to both 32-bit and 64-bit TSSs since their size is the same).
3366	*/
3367	if (enmTssType != kTss16)
3368	{
3369	if (offIoBitmap < cbTss && offIoBitmap >= 0x64)
3370	{
3371	uint32_t cPorts = RT_MIN((cbTss - offIoBitmap) * 8, _64K);
3372	DBGCVAR VarAddr;
3373	DBGCCmdHlpEval(pCmdHlp, &VarAddr, "%DV + %#x", &VarTssAddr, offIoBitmap);
3374	DBGCCmdHlpPrintf(pCmdHlp, "I/O bitmap at %DV - %#x ports:\n", &VarAddr, cPorts);
3375
3376	uint8_t const *pbIoBitmap = &abBuf[offIoBitmap];
3377	uint32_t iStart = 0;
3378	bool fPrev = ASMBitTest(pbIoBitmap, 0);
3379	uint32_t cLine = 0;
3380	for (uint32_t i = 1; i < cPorts; i++)
3381	{
3382	bool fThis = ASMBitTest(pbIoBitmap, i);
3383	if (fThis != fPrev)
3384	{
3385	cLine++;
3386	DBGCCmdHlpPrintf(pCmdHlp, "%04x-%04x %s%s", iStart, i-1,
3387	fPrev ? "GP" : "OK", (cLine % 6) == 0 ? "\n" : " ");
3388	fPrev = fThis;
3389	iStart = i;
3390	}
3391	}
3392	if (iStart != _64K-1)
3393	DBGCCmdHlpPrintf(pCmdHlp, "%04x-%04x %s\n", iStart, _64K-1, fPrev ? "GP" : "OK");
3394	}
3395	else if (offIoBitmap > 0)
3396	DBGCCmdHlpPrintf(pCmdHlp, "No I/O bitmap (-%#x)\n", cbTssMin - offIoBitmap);
3397	else
3398	DBGCCmdHlpPrintf(pCmdHlp, "No I/O bitmap\n");
3399	}
3400
3401	return VINF_SUCCESS;
3402	}
3403
3404
3405	/**
3406	* @interface_method_impl{FNDBCCMD, The 'm' command.}
3407	*/
3408	static DECLCALLBACK(int) dbgcCmdMemoryInfo(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3409	{
3410	DBGCCmdHlpPrintf(pCmdHlp, "Address: %DV\n", &paArgs[0]);
3411	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3412	return dbgcCmdDumpPageHierarchy(pCmd, pCmdHlp, pUVM, paArgs, cArgs);
3413	}
3414
3415
3416	/**
3417	* Converts one or more variables into a byte buffer for a
3418	* given unit size.
3419	*
3420	* @returns VBox status codes:
3421	* @retval VERR_TOO_MUCH_DATA if the buffer is too small, bitched.
3422	* @retval VERR_INTERNAL_ERROR on bad variable type, bitched.
3423	* @retval VINF_SUCCESS on success.
3424	*
3425	* @param pvBuf The buffer to convert into.
3426	* @param pcbBuf The buffer size on input. The size of the result on output.
3427	* @param cbUnit The unit size to apply when converting.
3428	* The high bit is used to indicate unicode string.
3429	* @param paVars The array of variables to convert.
3430	* @param cVars The number of variables.
3431	*/
3432	int dbgcVarsToBytes(PDBGCCMDHLP pCmdHlp, void pvBuf, uint32_t pcbBuf, size_t cbUnit, PCDBGCVAR paVars, unsigned cVars)
3433	{
3434	union
3435	{
3436	uint8_t *pu8;
3437	uint16_t *pu16;
3438	uint32_t *pu32;
3439	uint64_t *pu64;
3440	} u, uEnd;
3441	u.pu8 = (uint8_t *)pvBuf;
3442	uEnd.pu8 = u.pu8 + *pcbBuf;
3443
3444	unsigned i;
3445	for (i = 0; i < cVars && u.pu8 < uEnd.pu8; i++)
3446	{
3447	switch (paVars[i].enmType)
3448	{
3449	case DBGCVAR_TYPE_GC_FAR:
3450	case DBGCVAR_TYPE_GC_FLAT:
3451	case DBGCVAR_TYPE_GC_PHYS:
3452	case DBGCVAR_TYPE_HC_FLAT:
3453	case DBGCVAR_TYPE_HC_PHYS:
3454	case DBGCVAR_TYPE_NUMBER:
3455	{
3456	uint64_t u64 = paVars[i].u.u64Number;
3457	switch (cbUnit & 0x1f)
3458	{
3459	case 1:
3460	do
3461	{
3462	*u.pu8++ = u64;
3463	u64 >>= 8;
3464	} while (u64);
3465	break;
3466	case 2:
3467	do
3468	{
3469	*u.pu16++ = u64;
3470	u64 >>= 16;
3471	} while (u64);
3472	break;
3473	case 4:
3474	*u.pu32++ = u64;
3475	u64 >>= 32;
3476	if (u64)
3477	*u.pu32++ = u64;
3478	break;
3479	case 8:
3480	*u.pu64++ = u64;
3481	break;
3482	}
3483	break;
3484	}
3485
3486	case DBGCVAR_TYPE_STRING:
3487	case DBGCVAR_TYPE_SYMBOL:
3488	{
3489	const char *psz = paVars[i].u.pszString;
3490	size_t cbString = strlen(psz);
3491	if (cbUnit & RT_BIT_32(31))
3492	{
3493	/* Explode char to unit. */
3494	if (cbString > (uintptr_t)(uEnd.pu8 - u.pu8) * (cbUnit & 0x1f))
3495	{
3496	pCmdHlp->pfnVBoxError(pCmdHlp, VERR_TOO_MUCH_DATA, "Max %d bytes.\n", uEnd.pu8 - (uint8_t *)pvBuf);
3497	return VERR_TOO_MUCH_DATA;
3498	}
3499	while (*psz)
3500	{
3501	switch (cbUnit & 0x1f)
3502	{
3503	case 1: u.pu8++ = psz; break;
3504	case 2: u.pu16++ = psz; break;
3505	case 4: u.pu32++ = psz; break;
3506	case 8: u.pu64++ = psz; break;
3507	}
3508	psz++;
3509	}
3510	}
3511	else
3512	{
3513	/* Raw copy with zero padding if the size isn't aligned. */
3514	if (cbString > (uintptr_t)(uEnd.pu8 - u.pu8))
3515	{
3516	pCmdHlp->pfnVBoxError(pCmdHlp, VERR_TOO_MUCH_DATA, "Max %d bytes.\n", uEnd.pu8 - (uint8_t *)pvBuf);
3517	return VERR_TOO_MUCH_DATA;
3518	}
3519
3520	size_t cbCopy = cbString & ~(cbUnit - 1);
3521	memcpy(u.pu8, psz, cbCopy);
3522	u.pu8 += cbCopy;
3523	psz += cbCopy;
3524
3525	size_t cbReminder = cbString & (cbUnit - 1);
3526	if (cbReminder)
3527	{
3528	memcpy(u.pu8, psz, cbString & (cbUnit - 1));
3529	memset(u.pu8 + cbReminder, 0, cbUnit - cbReminder);
3530	u.pu8 += cbUnit;
3531	}
3532	}
3533	break;
3534	}
3535
3536	default:
3537	pcbBuf = u.pu8 - (uint8_t )pvBuf;
3538	pCmdHlp->pfnVBoxError(pCmdHlp, VERR_INTERNAL_ERROR,
3539	"i=%d enmType=%d\n", i, paVars[i].enmType);
3540	return VERR_INTERNAL_ERROR;
3541	}
3542	}
3543	pcbBuf = u.pu8 - (uint8_t )pvBuf;
3544	if (i != cVars)
3545	{
3546	pCmdHlp->pfnVBoxError(pCmdHlp, VERR_TOO_MUCH_DATA, "Max %d bytes.\n", uEnd.pu8 - (uint8_t *)pvBuf);
3547	return VERR_TOO_MUCH_DATA;
3548	}
3549	return VINF_SUCCESS;
3550	}
3551
3552
3553	/**
3554	* @interface_method_impl{FNDBCCMD, The 'eb', 'ew', 'ed' and 'eq' commands.}
3555	*/
3556	static DECLCALLBACK(int) dbgcCmdEditMem(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3557	{
3558	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
3559	unsigned iArg;
3560
3561	/*
3562	* Validate input.
3563	*/
3564	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs >= 2);
3565	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, DBGCVAR_ISPOINTER(paArgs[0].enmType));
3566	for (iArg = 1; iArg < cArgs; iArg++)
3567	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, paArgs[iArg].enmType == DBGCVAR_TYPE_NUMBER);
3568	DBGC_CMDHLP_REQ_UVM_RET(pCmdHlp, pCmd, pUVM);
3569
3570	/*
3571	* Figure out the element size.
3572	*/
3573	unsigned cbElement;
3574	switch (pCmd->pszCmd[1])
3575	{
3576	default:
3577	case 'b': cbElement = 1; break;
3578	case 'w': cbElement = 2; break;
3579	case 'd': cbElement = 4; break;
3580	case 'q': cbElement = 8; break;
3581	}
3582
3583	/*
3584	* Do setting.
3585	*/
3586	DBGCVAR Addr = paArgs[0];
3587	for (iArg = 1;;)
3588	{
3589	size_t cbWritten;
3590	int rc = pCmdHlp->pfnMemWrite(pCmdHlp, &paArgs[iArg].u, cbElement, &Addr, &cbWritten);
3591	if (RT_FAILURE(rc))
3592	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "Writing memory at %DV.\n", &Addr);
3593	if (cbWritten != cbElement)
3594	return DBGCCmdHlpFail(pCmdHlp, pCmd, "Only wrote %u out of %u bytes!\n", cbWritten, cbElement);
3595
3596	/* advance. */
3597	iArg++;
3598	if (iArg >= cArgs)
3599	break;
3600	rc = DBGCCmdHlpEval(pCmdHlp, &Addr, "%Dv + %#x", &Addr, cbElement);
3601	if (RT_FAILURE(rc))
3602	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "%%(%Dv)", &paArgs[0]);
3603	}
3604
3605	return VINF_SUCCESS;
3606	}
3607
3608
3609	/**
3610	* Executes the search.
3611	*
3612	* @returns VBox status code.
3613	* @param pCmdHlp The command helpers.
3614	* @param pUVM The user mode VM handle.
3615	* @param pAddress The address to start searching from. (undefined on output)
3616	* @param cbRange The address range to search. Must not wrap.
3617	* @param pabBytes The byte pattern to search for.
3618	* @param cbBytes The size of the pattern.
3619	* @param cbUnit The search unit.
3620	* @param cMaxHits The max number of hits.
3621	* @param pResult Where to store the result if it's a function invocation.
3622	*/
3623	static int dbgcCmdWorkerSearchMemDoIt(PDBGCCMDHLP pCmdHlp, PUVM pUVM, PDBGFADDRESS pAddress, RTGCUINTPTR cbRange,
3624	const uint8_t *pabBytes, uint32_t cbBytes,
3625	uint32_t cbUnit, uint64_t cMaxHits, PDBGCVAR pResult)
3626	{
3627	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
3628
3629	/*
3630	* Do the search.
3631	*/
3632	uint64_t cHits = 0;
3633	for (;;)
3634	{
3635	/* search */
3636	DBGFADDRESS HitAddress;
3637	int rc = DBGFR3MemScan(pUVM, pDbgc->idCpu, pAddress, cbRange, 1, pabBytes, cbBytes, &HitAddress);
3638	if (RT_FAILURE(rc))
3639	{
3640	if (rc != VERR_DBGF_MEM_NOT_FOUND)
3641	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "DBGFR3MemScan\n");
3642
3643	/* update the current address so we can save it (later). */
3644	pAddress->off += cbRange;
3645	pAddress->FlatPtr += cbRange;
3646	cbRange = 0;
3647	break;
3648	}
3649
3650	/* report result */
3651	DBGCVAR VarCur;
3652	rc = DBGCCmdHlpVarFromDbgfAddr(pCmdHlp, &HitAddress, &VarCur);
3653	if (RT_FAILURE(rc))
3654	return DBGCCmdHlpVBoxError(pCmdHlp, rc, "DBGCCmdHlpVarFromDbgfAddr\n");
3655	if (!pResult)
3656	pCmdHlp->pfnExec(pCmdHlp, "db %DV LB 10", &VarCur);
3657	else
3658	DBGCVAR_ASSIGN(pResult, &VarCur);
3659
3660	/* advance */
3661	cbRange -= HitAddress.FlatPtr - pAddress->FlatPtr;
3662	*pAddress = HitAddress;
3663	pAddress->FlatPtr += cbBytes;
3664	pAddress->off += cbBytes;
3665	if (cbRange <= cbBytes)
3666	{
3667	cbRange = 0;
3668	break;
3669	}
3670	cbRange -= cbBytes;
3671
3672	if (++cHits >= cMaxHits)
3673	{
3674	/// @todo save the search.
3675	break;
3676	}
3677	}
3678
3679	/*
3680	* Save the search so we can resume it...
3681	*/
3682	if (pDbgc->abSearch != pabBytes)
3683	{
3684	memcpy(pDbgc->abSearch, pabBytes, cbBytes);
3685	pDbgc->cbSearch = cbBytes;
3686	pDbgc->cbSearchUnit = cbUnit;
3687	}
3688	pDbgc->cMaxSearchHits = cMaxHits;
3689	pDbgc->SearchAddr = *pAddress;
3690	pDbgc->cbSearchRange = cbRange;
3691
3692	return cHits ? VINF_SUCCESS : VERR_DBGC_COMMAND_FAILED;
3693	}
3694
3695
3696	/**
3697	* Resumes the previous search.
3698	*
3699	* @returns VBox status code.
3700	* @param pCmdHlp Pointer to the command helper functions.
3701	* @param pUVM The user mode VM handle.
3702	* @param pResult Where to store the result of a function invocation.
3703	*/
3704	static int dbgcCmdWorkerSearchMemResume(PDBGCCMDHLP pCmdHlp, PUVM pUVM, PDBGCVAR pResult)
3705	{
3706	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
3707
3708	/*
3709	* Make sure there is a previous command.
3710	*/
3711	if (!pDbgc->cbSearch)
3712	{
3713	DBGCCmdHlpPrintf(pCmdHlp, "Error: No previous search\n");
3714	return VERR_DBGC_COMMAND_FAILED;
3715	}
3716
3717	/*
3718	* Make range and address adjustments.
3719	*/
3720	DBGFADDRESS Address = pDbgc->SearchAddr;
3721	if (Address.FlatPtr == ~(RTGCUINTPTR)0)
3722	{
3723	Address.FlatPtr -= Address.off;
3724	Address.off = 0;
3725	}
3726
3727	RTGCUINTPTR cbRange = pDbgc->cbSearchRange;
3728	if (!cbRange)
3729	cbRange = ~(RTGCUINTPTR)0;
3730	if (Address.FlatPtr + cbRange < pDbgc->SearchAddr.FlatPtr)
3731	cbRange = ~(RTGCUINTPTR)0 - pDbgc->SearchAddr.FlatPtr + !!pDbgc->SearchAddr.FlatPtr;
3732
3733	return dbgcCmdWorkerSearchMemDoIt(pCmdHlp, pUVM, &Address, cbRange, pDbgc->abSearch, pDbgc->cbSearch,
3734	pDbgc->cbSearchUnit, pDbgc->cMaxSearchHits, pResult);
3735	}
3736
3737
3738	/**
3739	* Search memory, worker for the 's' and 's?' functions.
3740	*
3741	* @returns VBox status.
3742	* @param pCmdHlp Pointer to the command helper functions.
3743	* @param pUVM The user mode VM handle.
3744	* @param pAddress Where to start searching. If no range, search till end of address space.
3745	* @param cMaxHits The maximum number of hits.
3746	* @param chType The search type.
3747	* @param paPatArgs The pattern variable array.
3748	* @param cPatArgs Number of pattern variables.
3749	* @param pResult Where to store the result of a function invocation.
3750	*/
3751	static int dbgcCmdWorkerSearchMem(PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR pAddress, uint64_t cMaxHits, char chType,
3752	PCDBGCVAR paPatArgs, unsigned cPatArgs, PDBGCVAR pResult)
3753	{
3754	if (pResult)
3755	DBGCVAR_INIT_GC_FLAT(pResult, 0);
3756
3757	/*
3758	* Convert the search pattern into bytes and DBGFR3MemScan can deal with.
3759	*/
3760	uint32_t cbUnit;
3761	switch (chType)
3762	{
3763	case 'a':
3764	case 'b': cbUnit = 1; break;
3765	case 'u': cbUnit = 2 \| RT_BIT_32(31); break;
3766	case 'w': cbUnit = 2; break;
3767	case 'd': cbUnit = 4; break;
3768	case 'q': cbUnit = 8; break;
3769	default:
3770	return pCmdHlp->pfnVBoxError(pCmdHlp, VERR_INVALID_PARAMETER, "chType=%c\n", chType);
3771	}
3772	uint8_t abBytes[RT_SIZEOFMEMB(DBGC, abSearch)];
3773	uint32_t cbBytes = sizeof(abBytes);
3774	int rc = dbgcVarsToBytes(pCmdHlp, abBytes, &cbBytes, cbUnit, paPatArgs, cPatArgs);
3775	if (RT_FAILURE(rc))
3776	return VERR_DBGC_COMMAND_FAILED;
3777
3778	/*
3779	* Make DBGF address and fix the range.
3780	*/
3781	DBGFADDRESS Address;
3782	rc = pCmdHlp->pfnVarToDbgfAddr(pCmdHlp, pAddress, &Address);
3783	if (RT_FAILURE(rc))
3784	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "VarToDbgfAddr(,%Dv,)\n", pAddress);
3785
3786	RTGCUINTPTR cbRange;
3787	switch (pAddress->enmRangeType)
3788	{
3789	case DBGCVAR_RANGE_BYTES:
3790	cbRange = pAddress->u64Range;
3791	if (cbRange != pAddress->u64Range)
3792	cbRange = ~(RTGCUINTPTR)0;
3793	break;
3794
3795	case DBGCVAR_RANGE_ELEMENTS:
3796	cbRange = (RTGCUINTPTR)(pAddress->u64Range * cbUnit);
3797	if ( cbRange != pAddress->u64Range * cbUnit
3798	\|\| cbRange < pAddress->u64Range)
3799	cbRange = ~(RTGCUINTPTR)0;
3800	break;
3801
3802	default:
3803	cbRange = ~(RTGCUINTPTR)0;
3804	break;
3805	}
3806	if (Address.FlatPtr + cbRange < Address.FlatPtr)
3807	cbRange = ~(RTGCUINTPTR)0 - Address.FlatPtr + !!Address.FlatPtr;
3808
3809	/*
3810	* Ok, do it.
3811	*/
3812	return dbgcCmdWorkerSearchMemDoIt(pCmdHlp, pUVM, &Address, cbRange, abBytes, cbBytes, cbUnit, cMaxHits, pResult);
3813	}
3814
3815
3816	/**
3817	* @interface_method_impl{FNDBCCMD, The 's' command.}
3818	*/
3819	static DECLCALLBACK(int) dbgcCmdSearchMem(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3820	{
3821	/* check that the parser did what it's supposed to do. */
3822	//if ( cArgs <= 2
3823	// && paArgs[0].enmType != DBGCVAR_TYPE_STRING)
3824	// return DBGCCmdHlpPrintf(pCmdHlp, "parser error\n");
3825
3826	/*
3827	* Repeat previous search?
3828	*/
3829	if (cArgs == 0)
3830	return dbgcCmdWorkerSearchMemResume(pCmdHlp, pUVM, NULL);
3831
3832	/*
3833	* Parse arguments.
3834	*/
3835
3836	return -1;
3837	}
3838
3839
3840	/**
3841	* @interface_method_impl{FNDBCCMD, The 's?' command.}
3842	*/
3843	static DECLCALLBACK(int) dbgcCmdSearchMemType(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3844	{
3845	/* check that the parser did what it's supposed to do. */
3846	DBGC_CMDHLP_ASSERT_PARSER_RET(pCmdHlp, pCmd, 0, cArgs >= 2 && DBGCVAR_ISGCPOINTER(paArgs[0].enmType));
3847	return dbgcCmdWorkerSearchMem(pCmdHlp, pUVM, &paArgs[0], 25, pCmd->pszCmd[1], paArgs + 1, cArgs - 1, NULL);
3848	}
3849
3850
3851	/**
3852	* List near symbol.
3853	*
3854	* @returns VBox status code.
3855	* @param pCmdHlp Pointer to command helper functions.
3856	* @param pUVM The user mode VM handle.
3857	* @param pArg Pointer to the address or symbol to lookup.
3858	*/
3859	static int dbgcDoListNear(PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR pArg)
3860	{
3861	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
3862
3863	RTDBGSYMBOL Symbol;
3864	int rc;
3865	if (pArg->enmType == DBGCVAR_TYPE_SYMBOL)
3866	{
3867	/*
3868	* Lookup the symbol address.
3869	*/
3870	rc = DBGFR3AsSymbolByName(pUVM, pDbgc->hDbgAs, pArg->u.pszString, &Symbol, NULL);
3871	if (RT_FAILURE(rc))
3872	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "DBGFR3AsSymbolByName(,,%s,)\n", pArg->u.pszString);
3873
3874	rc = DBGCCmdHlpPrintf(pCmdHlp, "%RTptr %s\n", Symbol.Value, Symbol.szName);
3875	}
3876	else
3877	{
3878	/*
3879	* Convert it to a flat GC address and lookup that address.
3880	*/
3881	DBGCVAR AddrVar;
3882	rc = DBGCCmdHlpEval(pCmdHlp, &AddrVar, "%%(%DV)", pArg);
3883	if (RT_FAILURE(rc))
3884	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "%%(%DV)\n", pArg);
3885
3886	RTINTPTR offDisp;
3887	DBGFADDRESS Addr;
3888	rc = DBGFR3AsSymbolByAddr(pUVM, pDbgc->hDbgAs, DBGFR3AddrFromFlat(pDbgc->pUVM, &Addr, AddrVar.u.GCFlat),
3889	RTDBGSYMADDR_FLAGS_LESS_OR_EQUAL, &offDisp, &Symbol, NULL);
3890	if (RT_FAILURE(rc))
3891	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "DBGFR3ASymbolByAddr(,,%RGv,,)\n", AddrVar.u.GCFlat);
3892
3893	if (!offDisp)
3894	rc = DBGCCmdHlpPrintf(pCmdHlp, "%DV %s", &AddrVar, Symbol.szName);
3895	else if (offDisp > 0)
3896	rc = DBGCCmdHlpPrintf(pCmdHlp, "%DV %s + %RGv", &AddrVar, Symbol.szName, offDisp);
3897	else
3898	rc = DBGCCmdHlpPrintf(pCmdHlp, "%DV %s - %RGv", &AddrVar, Symbol.szName, -offDisp);
3899	if (Symbol.cb > 0)
3900	rc = DBGCCmdHlpPrintf(pCmdHlp, " (LB %RGv)\n", Symbol.cb);
3901	else
3902	rc = DBGCCmdHlpPrintf(pCmdHlp, "\n");
3903	}
3904
3905	return rc;
3906	}
3907
3908
3909	/**
3910	* @interface_method_impl{FNDBCCMD, The 'ln' (listnear) command.}
3911	*/
3912	static DECLCALLBACK(int) dbgcCmdListNear(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3913	{
3914	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
3915	if (!cArgs)
3916	{
3917	/*
3918	* Current cs:eip symbol.
3919	*/
3920	DBGCVAR AddrVar;
3921	const char *pszFmtExpr = pDbgc->fRegCtxGuest ? "%%(cs:eip)" : "%%(.cs:.eip)";
3922	int rc = DBGCCmdHlpEval(pCmdHlp, &AddrVar, pszFmtExpr);
3923	if (RT_FAILURE(rc))
3924	return pCmdHlp->pfnVBoxError(pCmdHlp, rc, "%s\n", pszFmtExpr + 1);
3925	return dbgcDoListNear(pCmdHlp, pUVM, &AddrVar);
3926	}
3927
3928	/** @todo Fix the darn parser, it's resolving symbols specified as arguments before we get in here. */
3929	/*
3930	* Iterate arguments.
3931	*/
3932	for (unsigned iArg = 0; iArg < cArgs; iArg++)
3933	{
3934	int rc = dbgcDoListNear(pCmdHlp, pUVM, &paArgs[iArg]);
3935	if (RT_FAILURE(rc))
3936	return rc;
3937	}
3938
3939	NOREF(pCmd);
3940	return VINF_SUCCESS;
3941	}
3942
3943
3944	/**
3945	* Matches the module patters against a module name.
3946	*
3947	* @returns true if matching, otherwise false.
3948	* @param pszName The module name.
3949	* @param paArgs The module pattern argument list.
3950	* @param cArgs Number of arguments.
3951	*/
3952	static bool dbgcCmdListModuleMatch(const char *pszName, PCDBGCVAR paArgs, unsigned cArgs)
3953	{
3954	for (uint32_t i = 0; i < cArgs; i++)
3955	if (RTStrSimplePatternMatch(paArgs[i].u.pszString, pszName))
3956	return true;
3957	return false;
3958	}
3959
3960
3961	/**
3962	* @interface_method_impl{FNDBCCMD, The 'ln' (list near) command.}
3963	*/
3964	static DECLCALLBACK(int) dbgcCmdListModules(PCDBGCCMD pCmd, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, unsigned cArgs)
3965	{
3966	bool const fMappings = pCmd->pszCmd[2] == 'o';
3967	bool const fVerbose = pCmd->pszCmd[strlen(pCmd->pszCmd) - 1] == 'v';
3968	PDBGC pDbgc = DBGC_CMDHLP2DBGC(pCmdHlp);
3969
3970	/*
3971	* Iterate the modules in the current address space and print info about
3972	* those matching the input.
3973	*/
3974	RTDBGAS hAs = DBGFR3AsResolveAndRetain(pUVM, pDbgc->hDbgAs);
3975	uint32_t cMods = RTDbgAsModuleCount(hAs);
3976	for (uint32_t iMod = 0; iMod < cMods; iMod++)
3977	{
3978	RTDBGMOD hMod = RTDbgAsModuleByIndex(hAs, iMod);
3979	if (hMod != NIL_RTDBGMOD)
3980	{
3981	bool const fDeferred = RTDbgModIsDeferred(hMod);
3982	bool const fExports = RTDbgModIsExports(hMod);
3983	uint32_t const cSegs = fDeferred ? 1 : RTDbgModSegmentCount(hMod);
3984	const char * const pszName = RTDbgModName(hMod);
3985	const char * const pszImgFile = RTDbgModImageFile(hMod);
3986	const char * const pszImgFileUsed = RTDbgModImageFileUsed(hMod);
3987	const char * const pszDbgFile = RTDbgModDebugFile(hMod);
3988	if ( cArgs == 0
3989	\|\| dbgcCmdListModuleMatch(pszName, paArgs, cArgs))
3990	{
3991	/*
3992	* Find the mapping with the lower address, preferring a full
3993	* image mapping, for the main line.
3994	*/
3995	RTDBGASMAPINFO aMappings[128];
3996	uint32_t cMappings = RT_ELEMENTS(aMappings);
3997	int rc = RTDbgAsModuleQueryMapByIndex(hAs, iMod, &aMappings[0], &cMappings, 0 /fFlags/);
3998	if (RT_SUCCESS(rc))
3999	{
4000	bool fFull = false;
4001	RTUINTPTR uMin = RTUINTPTR_MAX;
4002	for (uint32_t iMap = 0; iMap < cMappings; iMap++)
4003	if ( aMappings[iMap].Address < uMin
4004	&& ( !fFull
4005	\|\| aMappings[iMap].iSeg == NIL_RTDBGSEGIDX))
4006	uMin = aMappings[iMap].Address;
4007	if (!fVerbose \|\| !pszImgFile)
4008	DBGCCmdHlpPrintf(pCmdHlp, "%RGv %04x %s%s\n", (RTGCUINTPTR)uMin, cSegs, pszName,
4009	fExports ? " (exports)" : fDeferred ? " (deferred)" : "");
4010	else
4011	DBGCCmdHlpPrintf(pCmdHlp, "%RGv %04x %-12s %s%s\n", (RTGCUINTPTR)uMin, cSegs, pszName, pszImgFile,
4012	fExports ? " (exports)" : fDeferred ? " (deferred)" : "");
4013	if (fVerbose && pszImgFileUsed)
4014	DBGCCmdHlpPrintf(pCmdHlp, " Local image: %s\n", pszImgFileUsed);
4015	if (fVerbose && pszDbgFile)
4016	DBGCCmdHlpPrintf(pCmdHlp, " Debug file: %s\n", pszDbgFile);
4017
4018	if (fMappings)
4019	{
4020	/* sort by address first - not very efficient. */
4021	for (uint32_t i = 0; i + 1 < cMappings; i++)
4022	for (uint32_t j = i + 1; j < cMappings; j++)
4023	if (aMappings[j].Address < aMappings[i].Address)
4024	{
4025	RTDBGASMAPINFO Tmp = aMappings[j];
4026	aMappings[j] = aMappings[i];
4027	aMappings[i] = Tmp;
4028	}
4029
4030	/* print */
4031	if ( cMappings == 1
4032	&& aMappings[0].iSeg == NIL_RTDBGSEGIDX
4033	&& !fDeferred)
4034	{
4035	for (uint32_t iSeg = 0; iSeg < cSegs; iSeg++)
4036	{
4037	RTDBGSEGMENT SegInfo;
4038	rc = RTDbgModSegmentByIndex(hMod, iSeg, &SegInfo);
4039	if (RT_SUCCESS(rc))
4040	{
4041	if (SegInfo.uRva != RTUINTPTR_MAX)
4042	DBGCCmdHlpPrintf(pCmdHlp, " %RGv %RGv #%02x %s\n",
4043	(RTGCUINTPTR)(aMappings[0].Address + SegInfo.uRva),
4044	(RTGCUINTPTR)SegInfo.cb, iSeg, SegInfo.szName);
4045	else
4046	DBGCCmdHlpPrintf(pCmdHlp, " %*s %RGv #%02x %s\n",
4047	sizeof(RTGCUINTPTR)*2, "noload",
4048	(RTGCUINTPTR)SegInfo.cb, iSeg, SegInfo.szName);
4049	}
4050	else
4051	DBGCCmdHlpPrintf(pCmdHlp, " Error query segment #%u: %Rrc\n", iSeg, rc);
4052	}
4053	}
4054	else
4055	{
4056	for (uint32_t iMap = 0; iMap < cMappings; iMap++)
4057	if (aMappings[iMap].iSeg == NIL_RTDBGSEGIDX)
4058	DBGCCmdHlpPrintf(pCmdHlp, " %RGv %RGv <everything>\n",
4059	(RTGCUINTPTR)aMappings[iMap].Address,
4060	(RTGCUINTPTR)RTDbgModImageSize(hMod));
4061	else if (!fDeferred)
4062	{
4063	RTDBGSEGMENT SegInfo;
4064	rc = RTDbgModSegmentByIndex(hMod, aMappings[iMap].iSeg, &SegInfo);
4065	if (RT_FAILURE(rc))
4066	{
4067	RT_ZERO(SegInfo);
4068	strcpy(SegInfo.szName, "error");
4069	}
4070	DBGCCmdHlpPrintf(pCmdHlp, " %RGv %RGv #%02x %s\n",
4071	(RTGCUINTPTR)aMappings[iMap].Address,
4072	(RTGCUINTPTR)SegInfo.cb,
4073	aMappings[iMap].iSeg, SegInfo.szName);
4074	}
4075	else
4076	DBGCCmdHlpPrintf(pCmdHlp, " %RGv #%02x\n",
4077	(RTGCUINTPTR)aMappings[iMap].Address, aMappings[iMap].iSeg);
4078	}
4079	}
4080	}
4081	else
4082	DBGCCmdHlpPrintf(pCmdHlp, "%.*s %04x %s (rc=%Rrc)\n",
4083	sizeof(RTGCPTR) * 2, "???????????", cSegs, pszName, rc);
4084	/** @todo missing address space API for enumerating the mappings. */
4085	}
4086	RTDbgModRelease(hMod);
4087	}
4088	}
4089	RTDbgAsRelease(hAs);
4090
4091	NOREF(pCmd);
4092	return VINF_SUCCESS;
4093	}
4094
4095
4096
4097	/**
4098	* @callback_method_impl{Reads a unsigned 8-bit value.}
4099	*/
4100	static DECLCALLBACK(int) dbgcFuncReadU8(PCDBGCFUNC pFunc, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, uint32_t cArgs,
4101	PDBGCVAR pResult)
4102	{
4103	AssertReturn(cArgs == 1, VERR_DBGC_PARSE_BUG);
4104	AssertReturn(DBGCVAR_ISPOINTER(paArgs[0].enmType), VERR_DBGC_PARSE_BUG);
4105	AssertReturn(paArgs[0].enmRangeType == DBGCVAR_RANGE_NONE, VERR_DBGC_PARSE_BUG);
4106
4107	uint8_t b;
4108	int rc = DBGCCmdHlpMemRead(pCmdHlp, &b, sizeof(b), &paArgs[0], NULL);
4109	if (RT_FAILURE(rc))
4110	return rc;
4111	DBGCVAR_INIT_NUMBER(pResult, b);
4112
4113	NOREF(pFunc);
4114	return VINF_SUCCESS;
4115	}
4116
4117
4118	/**
4119	* @callback_method_impl{Reads a unsigned 16-bit value.}
4120	*/
4121	static DECLCALLBACK(int) dbgcFuncReadU16(PCDBGCFUNC pFunc, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, uint32_t cArgs,
4122	PDBGCVAR pResult)
4123	{
4124	AssertReturn(cArgs == 1, VERR_DBGC_PARSE_BUG);
4125	AssertReturn(DBGCVAR_ISPOINTER(paArgs[0].enmType), VERR_DBGC_PARSE_BUG);
4126	AssertReturn(paArgs[0].enmRangeType == DBGCVAR_RANGE_NONE, VERR_DBGC_PARSE_BUG);
4127
4128	uint16_t u16;
4129	int rc = DBGCCmdHlpMemRead(pCmdHlp, &u16, sizeof(u16), &paArgs[0], NULL);
4130	if (RT_FAILURE(rc))
4131	return rc;
4132	DBGCVAR_INIT_NUMBER(pResult, u16);
4133
4134	NOREF(pFunc);
4135	return VINF_SUCCESS;
4136	}
4137
4138
4139	/**
4140	* @callback_method_impl{Reads a unsigned 32-bit value.}
4141	*/
4142	static DECLCALLBACK(int) dbgcFuncReadU32(PCDBGCFUNC pFunc, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, uint32_t cArgs,
4143	PDBGCVAR pResult)
4144	{
4145	AssertReturn(cArgs == 1, VERR_DBGC_PARSE_BUG);
4146	AssertReturn(DBGCVAR_ISPOINTER(paArgs[0].enmType), VERR_DBGC_PARSE_BUG);
4147	AssertReturn(paArgs[0].enmRangeType == DBGCVAR_RANGE_NONE, VERR_DBGC_PARSE_BUG);
4148
4149	uint32_t u32;
4150	int rc = DBGCCmdHlpMemRead(pCmdHlp, &u32, sizeof(u32), &paArgs[0], NULL);
4151	if (RT_FAILURE(rc))
4152	return rc;
4153	DBGCVAR_INIT_NUMBER(pResult, u32);
4154
4155	NOREF(pFunc);
4156	return VINF_SUCCESS;
4157	}
4158
4159
4160	/**
4161	* @callback_method_impl{Reads a unsigned 64-bit value.}
4162	*/
4163	static DECLCALLBACK(int) dbgcFuncReadU64(PCDBGCFUNC pFunc, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, uint32_t cArgs,
4164	PDBGCVAR pResult)
4165	{
4166	AssertReturn(cArgs == 1, VERR_DBGC_PARSE_BUG);
4167	AssertReturn(DBGCVAR_ISPOINTER(paArgs[0].enmType), VERR_DBGC_PARSE_BUG);
4168	AssertReturn(paArgs[0].enmRangeType == DBGCVAR_RANGE_NONE, VERR_DBGC_PARSE_BUG);
4169
4170	uint64_t u64;
4171	int rc = DBGCCmdHlpMemRead(pCmdHlp, &u64, sizeof(u64), &paArgs[0], NULL);
4172	if (RT_FAILURE(rc))
4173	return rc;
4174	DBGCVAR_INIT_NUMBER(pResult, u64);
4175
4176	NOREF(pFunc);
4177	return VINF_SUCCESS;
4178	}
4179
4180
4181	/**
4182	* @callback_method_impl{Reads a unsigned pointer-sized value.}
4183	*/
4184	static DECLCALLBACK(int) dbgcFuncReadPtr(PCDBGCFUNC pFunc, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, uint32_t cArgs,
4185	PDBGCVAR pResult)
4186	{
4187	AssertReturn(cArgs == 1, VERR_DBGC_PARSE_BUG);
4188	AssertReturn(DBGCVAR_ISPOINTER(paArgs[0].enmType), VERR_DBGC_PARSE_BUG);
4189	AssertReturn(paArgs[0].enmRangeType == DBGCVAR_RANGE_NONE, VERR_DBGC_PARSE_BUG);
4190
4191	CPUMMODE enmMode = DBGCCmdHlpGetCpuMode(pCmdHlp);
4192	if (enmMode == CPUMMODE_LONG)
4193	return dbgcFuncReadU64(pFunc, pCmdHlp, pUVM, paArgs, cArgs, pResult);
4194	return dbgcFuncReadU32(pFunc, pCmdHlp, pUVM, paArgs, cArgs, pResult);
4195	}
4196
4197
4198	/**
4199	* @callback_method_impl{The hi(value) function implementation.}
4200	*/
4201	static DECLCALLBACK(int) dbgcFuncHi(PCDBGCFUNC pFunc, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, uint32_t cArgs,
4202	PDBGCVAR pResult)
4203	{
4204	AssertReturn(cArgs == 1, VERR_DBGC_PARSE_BUG);
4205
4206	uint16_t uHi;
4207	switch (paArgs[0].enmType)
4208	{
4209	case DBGCVAR_TYPE_GC_FLAT: uHi = (uint16_t)(paArgs[0].u.GCFlat >> 16); break;
4210	case DBGCVAR_TYPE_GC_FAR: uHi = (uint16_t)paArgs[0].u.GCFar.sel; break;
4211	case DBGCVAR_TYPE_GC_PHYS: uHi = (uint16_t)(paArgs[0].u.GCPhys >> 16); break;
4212	case DBGCVAR_TYPE_HC_FLAT: uHi = (uint16_t)((uintptr_t)paArgs[0].u.pvHCFlat >> 16); break;
4213	case DBGCVAR_TYPE_HC_PHYS: uHi = (uint16_t)(paArgs[0].u.HCPhys >> 16); break;
4214	case DBGCVAR_TYPE_NUMBER: uHi = (uint16_t)(paArgs[0].u.u64Number >> 16); break;
4215	default:
4216	AssertFailedReturn(VERR_DBGC_PARSE_BUG);
4217	}
4218	DBGCVAR_INIT_NUMBER(pResult, uHi);
4219	DBGCVAR_SET_RANGE(pResult, paArgs[0].enmRangeType, paArgs[0].u64Range);
4220
4221	NOREF(pFunc); NOREF(pCmdHlp); NOREF(pUVM);
4222	return VINF_SUCCESS;
4223	}
4224
4225
4226	/**
4227	* @callback_method_impl{The low(value) function implementation.}
4228	*/
4229	static DECLCALLBACK(int) dbgcFuncLow(PCDBGCFUNC pFunc, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, uint32_t cArgs,
4230	PDBGCVAR pResult)
4231	{
4232	AssertReturn(cArgs == 1, VERR_DBGC_PARSE_BUG);
4233
4234	uint16_t uLow;
4235	switch (paArgs[0].enmType)
4236	{
4237	case DBGCVAR_TYPE_GC_FLAT: uLow = (uint16_t)paArgs[0].u.GCFlat; break;
4238	case DBGCVAR_TYPE_GC_FAR: uLow = (uint16_t)paArgs[0].u.GCFar.off; break;
4239	case DBGCVAR_TYPE_GC_PHYS: uLow = (uint16_t)paArgs[0].u.GCPhys; break;
4240	case DBGCVAR_TYPE_HC_FLAT: uLow = (uint16_t)(uintptr_t)paArgs[0].u.pvHCFlat; break;
4241	case DBGCVAR_TYPE_HC_PHYS: uLow = (uint16_t)paArgs[0].u.HCPhys; break;
4242	case DBGCVAR_TYPE_NUMBER: uLow = (uint16_t)paArgs[0].u.u64Number; break;
4243	default:
4244	AssertFailedReturn(VERR_DBGC_PARSE_BUG);
4245	}
4246	DBGCVAR_INIT_NUMBER(pResult, uLow);
4247	DBGCVAR_SET_RANGE(pResult, paArgs[0].enmRangeType, paArgs[0].u64Range);
4248
4249	NOREF(pFunc); NOREF(pCmdHlp); NOREF(pUVM);
4250	return VINF_SUCCESS;
4251	}
4252
4253
4254	/**
4255	* @callback_method_impl{The low(value) function implementation.}
4256	*/
4257	static DECLCALLBACK(int) dbgcFuncNot(PCDBGCFUNC pFunc, PDBGCCMDHLP pCmdHlp, PUVM pUVM, PCDBGCVAR paArgs, uint32_t cArgs,
4258	PDBGCVAR pResult)
4259	{
4260	AssertReturn(cArgs == 1, VERR_DBGC_PARSE_BUG);
4261	NOREF(pFunc); NOREF(pCmdHlp); NOREF(pUVM);
4262	return DBGCCmdHlpEval(pCmdHlp, pResult, "!(%Dv)", &paArgs[0]);
4263	}
4264
4265
4266	/** Generic pointer argument wo/ range. */
4267	static const DBGCVARDESC g_aArgPointerWoRange[] =
4268	{
4269	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
4270	{ 1, 1, DBGCVAR_CAT_POINTER_NO_RANGE, 0, "value", "Address or number." },
4271	};
4272
4273	/** Generic pointer or number argument. */
4274	static const DBGCVARDESC g_aArgPointerNumber[] =
4275	{
4276	/* cTimesMin, cTimesMax, enmCategory, fFlags, pszName, pszDescription */
4277	{ 1, 1, DBGCVAR_CAT_POINTER_NUMBER, 0, "value", "Address or number." },
4278	};
4279
4280
4281
4282	/** Function descriptors for the CodeView / WinDbg emulation.
4283	* The emulation isn't attempting to be identical, only somewhat similar.
4284	*/
4285	const DBGCFUNC g_aFuncsCodeView[] =
4286	{
4287	{ "by", 1, 1, &g_aArgPointerWoRange[0], RT_ELEMENTS(g_aArgPointerWoRange), 0, dbgcFuncReadU8, "address", "Reads a byte at the given address." },
4288	{ "dwo", 1, 1, &g_aArgPointerWoRange[0], RT_ELEMENTS(g_aArgPointerWoRange), 0, dbgcFuncReadU32, "address", "Reads a 32-bit value at the given address." },
4289	{ "hi", 1, 1, &g_aArgPointerNumber[0], RT_ELEMENTS(g_aArgPointerNumber), 0, dbgcFuncHi, "value", "Returns the high 16-bit bits of a value." },
4290	{ "low", 1, 1, &g_aArgPointerNumber[0], RT_ELEMENTS(g_aArgPointerNumber), 0, dbgcFuncLow, "value", "Returns the low 16-bit bits of a value." },
4291	{ "not", 1, 1, &g_aArgPointerNumber[0], RT_ELEMENTS(g_aArgPointerNumber), 0, dbgcFuncNot, "address", "Boolean NOT." },
4292	{ "poi", 1, 1, &g_aArgPointerWoRange[0], RT_ELEMENTS(g_aArgPointerWoRange), 0, dbgcFuncReadPtr, "address", "Reads a pointer sized (CS) value at the given address." },
4293	{ "qwo", 1, 1, &g_aArgPointerWoRange[0], RT_ELEMENTS(g_aArgPointerWoRange), 0, dbgcFuncReadU64, "address", "Reads a 32-bit value at the given address." },
4294	{ "wo", 1, 1, &g_aArgPointerWoRange[0], RT_ELEMENTS(g_aArgPointerWoRange), 0, dbgcFuncReadU16, "address", "Reads a 16-bit value at the given address." },
4295	};
4296
4297	/** The number of functions in the CodeView/WinDbg emulation. */
4298	const uint32_t g_cFuncsCodeView = RT_ELEMENTS(g_aFuncsCodeView);
4299

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source: vbox/trunk/src/VBox/Debugger/DBGCEmulateCodeView.cpp@ 46876

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