DBGCOps.cpp@ 86186

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1	/* $Id: DBGCOps.cpp 82968 2020-02-04 10:35:17Z vboxsync $ */
2	/** @file
3	* DBGC - Debugger Console, Operators.
4	*/
5
6	/*
7	* Copyright (C) 2006-2020 Oracle Corporation
8	*
9	* This file is part of VirtualBox Open Source Edition (OSE), as
10	* available from http://www.virtualbox.org. This file is free software;
11	* you can redistribute it and/or modify it under the terms of the GNU
12	* General Public License (GPL) as published by the Free Software
13	* Foundation, in version 2 as it comes in the "COPYING" file of the
14	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16	*/
17
18
19	/*********************************************************************************************************************************
20	* Header Files *
21	*********************************************************************************************************************************/
22	#define LOG_GROUP LOG_GROUP_DBGC
23	#include <VBox/dbg.h>
24	#include <VBox/vmm/dbgf.h>
25	#include <VBox/param.h>
26	#include <VBox/err.h>
27	#include <VBox/log.h>
28
29	#include <iprt/assert.h>
30	#include <iprt/mem.h>
31	#include <iprt/string.h>
32
33	#include "DBGCInternal.h"
34
35
36	/*********************************************************************************************************************************
37	* Internal Functions *
38	*********************************************************************************************************************************/
39	static DECLCALLBACK(int) dbgcOpMinus(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult);
40	static DECLCALLBACK(int) dbgcOpPluss(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult);
41	static DECLCALLBACK(int) dbgcOpBooleanNot(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult);
42	static DECLCALLBACK(int) dbgcOpBitwiseNot(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult);
43	static DECLCALLBACK(int) dbgcOpVar(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult);
44
45	static DECLCALLBACK(int) dbgcOpAddrFar(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
46	static DECLCALLBACK(int) dbgcOpMult(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
47	static DECLCALLBACK(int) dbgcOpDiv(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
48	static DECLCALLBACK(int) dbgcOpMod(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
49	static DECLCALLBACK(int) dbgcOpAdd(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
50	static DECLCALLBACK(int) dbgcOpSub(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
51	static DECLCALLBACK(int) dbgcOpBitwiseShiftLeft(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
52	static DECLCALLBACK(int) dbgcOpBitwiseShiftRight(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
53	static DECLCALLBACK(int) dbgcOpBitwiseAnd(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
54	static DECLCALLBACK(int) dbgcOpBitwiseXor(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
55	static DECLCALLBACK(int) dbgcOpBitwiseOr(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
56	static DECLCALLBACK(int) dbgcOpBooleanAnd(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
57	static DECLCALLBACK(int) dbgcOpBooleanOr(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
58	static DECLCALLBACK(int) dbgcOpRangeLength(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
59	static DECLCALLBACK(int) dbgcOpRangeLengthBytes(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
60	static DECLCALLBACK(int) dbgcOpRangeTo(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult);
61
62
63	/*********************************************************************************************************************************
64	* Defined Constants And Macros *
65	*********************************************************************************************************************************/
66	/**
67	* Generic implementation of a binary operator.
68	*
69	* @returns VINF_SUCCESS on success.
70	* @returns VBox evaluation / parsing error code on failure.
71	* The caller does the bitching.
72	* @param pDbgc Debugger console instance data.
73	* @param pArg1 The first argument.
74	* @param pArg2 The 2nd argument.
75	* @param pResult Where to store the result.
76	* @param Operator The C operator.
77	* @param fIsDiv Set if it's division and we need to check for zero on the
78	* right hand side.
79	*/
80	#define DBGC_GEN_ARIT_BINARY_OP(pDbgc, pArg1, pArg2, pResult, Operator, fIsDiv) \
81	do \
82	{ \
83	if ((pArg1)->enmType == DBGCVAR_TYPE_STRING) \
84	return VERR_DBGC_PARSE_INVALID_OPERATION; \
85	\
86	/* Get the 64-bit right side value. */ \
87	uint64_t u64Right; \
88	int rc = dbgcOpHelperGetNumber((pDbgc), (pArg2), &u64Right); \
89	if ((fIsDiv) && RT_SUCCESS(rc) && !u64Right) /* div/0 kludge */ \
90	DBGCVAR_INIT_NUMBER((pResult), UINT64_MAX); \
91	else if (RT_SUCCESS(rc)) \
92	{ \
93	/* Apply it to the left hand side. */ \
94	if ((pArg1)->enmType == DBGCVAR_TYPE_SYMBOL) \
95	{ \
96	rc = dbgcSymbolGet((pDbgc), (pArg1)->u.pszString, DBGCVAR_TYPE_ANY, (pResult)); \
97	if (RT_FAILURE(rc)) \
98	return rc; \
99	} \
100	else \
101	(pResult) = (pArg1); \
102	switch ((pResult)->enmType) \
103	{ \
104	case DBGCVAR_TYPE_GC_FLAT: \
105	(pResult)->u.GCFlat = (pResult)->u.GCFlat Operator u64Right; \
106	break; \
107	case DBGCVAR_TYPE_GC_FAR: \
108	(pResult)->u.GCFar.off = (pResult)->u.GCFar.off Operator u64Right; \
109	break; \
110	case DBGCVAR_TYPE_GC_PHYS: \
111	(pResult)->u.GCPhys = (pResult)->u.GCPhys Operator u64Right; \
112	break; \
113	case DBGCVAR_TYPE_HC_FLAT: \
114	(pResult)->u.pvHCFlat = (void *)((uintptr_t)(pResult)->u.pvHCFlat Operator u64Right); \
115	break; \
116	case DBGCVAR_TYPE_HC_PHYS: \
117	(pResult)->u.HCPhys = (pResult)->u.HCPhys Operator u64Right; \
118	break; \
119	case DBGCVAR_TYPE_NUMBER: \
120	(pResult)->u.u64Number = (pResult)->u.u64Number Operator u64Right; \
121	break; \
122	default: \
123	return VERR_DBGC_PARSE_INCORRECT_ARG_TYPE; \
124	} \
125	} \
126	return rc; \
127	} while (0)
128
129
130	/**
131	* Switch the factors/whatever so we preserve pointers.
132	* Far pointers are considered more important that physical and flat pointers.
133	*
134	* @param pArg1 The left side argument. Input & output.
135	* @param pArg2 The right side argument. Input & output.
136	*/
137	#define DBGC_GEN_ARIT_POINTER_TO_THE_LEFT(pArg1, pArg2) \
138	do \
139	{ \
140	if ( DBGCVAR_ISPOINTER((pArg2)->enmType) \
141	&& ( !DBGCVAR_ISPOINTER((pArg1)->enmType) \
142	\|\| ( DBGCVAR_IS_FAR_PTR((pArg2)->enmType) \
143	&& !DBGCVAR_IS_FAR_PTR((pArg1)->enmType)))) \
144	{ \
145	PCDBGCVAR pTmp = (pArg1); \
146	(pArg2) = (pArg1); \
147	(pArg1) = pTmp; \
148	} \
149	} while (0)
150
151
152	/*********************************************************************************************************************************
153	* Global Variables *
154	*********************************************************************************************************************************/
155	/** Operators. */
156	const DBGCOP g_aDbgcOps[] =
157	{
158	/* szName is initialized as a 4 char array because of M$C elsewise optimizing it away in /Ox mode (the 'const char' vs 'char' problem). */
159	/* szName, cchName, fBinary, iPrecedence, pfnHandlerUnary, pfnHandlerBitwise */
160	{ {'-'}, 1, false, 1, dbgcOpMinus, NULL, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Unary minus." },
161	{ {'+'}, 1, false, 1, dbgcOpPluss, NULL, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Unary plus." },
162	{ {'!'}, 1, false, 1, dbgcOpBooleanNot, NULL, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Boolean not." },
163	{ {'~'}, 1, false, 1, dbgcOpBitwiseNot, NULL, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Bitwise complement." },
164	{ {':'}, 1, true, 2, NULL, dbgcOpAddrFar, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Far pointer." },
165	{ {'%'}, 1, false, 3, dbgcOpAddrFlat, NULL, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Flat address." },
166	{ {'%','%'}, 2, false, 3, dbgcOpAddrPhys, NULL, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Physical address." },
167	{ {'#'}, 1, false, 3, dbgcOpAddrHost, NULL, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Flat host address." },
168	{ {'#','%','%'}, 3, false, 3, dbgcOpAddrHostPhys, NULL, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Physical host address." },
169	{ {'$'}, 1, false, 3, dbgcOpVar, NULL, DBGCVAR_CAT_SYMBOL, DBGCVAR_CAT_ANY, "Reference a variable." },
170	{ {'@'}, 1, false, 3, dbgcOpRegister, NULL, DBGCVAR_CAT_SYMBOL, DBGCVAR_CAT_ANY, "Reference a register." },
171	{ {'*'}, 1, true, 10, NULL, dbgcOpMult, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Multiplication." },
172	{ {'/'}, 1, true, 11, NULL, dbgcOpDiv, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Division." },
173	{ {'m','o','d'}, 3, true, 12, NULL, dbgcOpMod, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Modulus." },
174	{ {'+'}, 1, true, 13, NULL, dbgcOpAdd, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Addition." },
175	{ {'-'}, 1, true, 14, NULL, dbgcOpSub, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Subtraction." },
176	{ {'<','<'}, 2, true, 15, NULL, dbgcOpBitwiseShiftLeft, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Bitwise left shift." },
177	{ {'>','>'}, 2, true, 16, NULL, dbgcOpBitwiseShiftRight, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Bitwise right shift." },
178	{ {'&'}, 1, true, 17, NULL, dbgcOpBitwiseAnd, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Bitwise and." },
179	{ {'^'}, 1, true, 18, NULL, dbgcOpBitwiseXor, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Bitwise exclusiv or." },
180	{ {'\|'}, 1, true, 19, NULL, dbgcOpBitwiseOr, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Bitwise inclusive or." },
181	{ {'&','&'}, 2, true, 20, NULL, dbgcOpBooleanAnd, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Boolean and." },
182	{ {'\|','\|'}, 2, true, 21, NULL, dbgcOpBooleanOr, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Boolean or." },
183	{ {'L'}, 1, true, 22, NULL, dbgcOpRangeLength, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Range elements." },
184	{ {'L','B'}, 2, true, 23, NULL, dbgcOpRangeLengthBytes, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Range bytes." },
185	{ {'T'}, 1, true, 24, NULL, dbgcOpRangeTo, DBGCVAR_CAT_ANY, DBGCVAR_CAT_ANY, "Range to." }
186	};
187
188	/** Number of operators in the operator array. */
189	const uint32_t g_cDbgcOps = RT_ELEMENTS(g_aDbgcOps);
190
191
192	/**
193	* Converts an argument to a number value.
194	*
195	* @returns VBox status code.
196	* @param pDbgc The DBGC instance.
197	* @param pArg The argument to convert.
198	* @param pu64Ret Where to return the value.
199	*/
200	static int dbgcOpHelperGetNumber(PDBGC pDbgc, PCDBGCVAR pArg, uint64_t *pu64Ret)
201	{
202	DBGCVAR Var = *pArg;
203	switch (Var.enmType)
204	{
205	case DBGCVAR_TYPE_GC_FLAT:
206	*pu64Ret = Var.u.GCFlat;
207	break;
208	case DBGCVAR_TYPE_GC_FAR:
209	*pu64Ret = Var.u.GCFar.off;
210	break;
211	case DBGCVAR_TYPE_GC_PHYS:
212	*pu64Ret = Var.u.GCPhys;
213	break;
214	case DBGCVAR_TYPE_HC_FLAT:
215	*pu64Ret = (uintptr_t)Var.u.pvHCFlat;
216	break;
217	case DBGCVAR_TYPE_HC_PHYS:
218	*pu64Ret = Var.u.HCPhys;
219	break;
220	case DBGCVAR_TYPE_NUMBER:
221	*pu64Ret = Var.u.u64Number;
222	break;
223	case DBGCVAR_TYPE_SYMBOL:
224	{
225	int rc = dbgcSymbolGet(pDbgc, Var.u.pszString, DBGCVAR_TYPE_NUMBER, &Var);
226	if (RT_FAILURE(rc))
227	return rc;
228	}
229	RT_FALL_THRU();
230	case DBGCVAR_TYPE_STRING:
231	default:
232	return VERR_DBGC_PARSE_INCORRECT_ARG_TYPE;
233	}
234	return VINF_SUCCESS;
235	}
236
237
238	/**
239	* @callback_method_impl{FNDBGCOPUNARY, Negate (unary).}
240	*/
241	static DECLCALLBACK(int) dbgcOpMinus(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult)
242	{
243	RT_NOREF1(enmCat);
244	LogFlow(("dbgcOpMinus\n"));
245	pResult = pArg;
246	switch (pArg->enmType)
247	{
248	case DBGCVAR_TYPE_GC_FLAT:
249	pResult->u.GCFlat = -(RTGCINTPTR)pResult->u.GCFlat;
250	break;
251	case DBGCVAR_TYPE_GC_FAR:
252	pResult->u.GCFar.off = -(int32_t)pResult->u.GCFar.off;
253	break;
254	case DBGCVAR_TYPE_GC_PHYS:
255	pResult->u.GCPhys = (RTGCPHYS) -(int64_t)pResult->u.GCPhys;
256	break;
257	case DBGCVAR_TYPE_HC_FLAT:
258	pResult->u.pvHCFlat = (void *) -(intptr_t)pResult->u.pvHCFlat;
259	break;
260	case DBGCVAR_TYPE_HC_PHYS:
261	pResult->u.HCPhys = (RTHCPHYS) -(int64_t)pResult->u.HCPhys;
262	break;
263	case DBGCVAR_TYPE_NUMBER:
264	pResult->u.u64Number = -(int64_t)pResult->u.u64Number;
265	break;
266
267	case DBGCVAR_TYPE_STRING:
268	case DBGCVAR_TYPE_SYMBOL:
269	default:
270	return VERR_DBGC_PARSE_INCORRECT_ARG_TYPE;
271	}
272	NOREF(pDbgc);
273	return VINF_SUCCESS;
274	}
275
276
277	/**
278	* @callback_method_impl{FNDBGCOPUNARY, Plus (unary).}
279	*/
280	static DECLCALLBACK(int) dbgcOpPluss(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult)
281	{
282	RT_NOREF1(enmCat);
283	LogFlow(("dbgcOpPluss\n"));
284	pResult = pArg;
285	switch (pArg->enmType)
286	{
287	case DBGCVAR_TYPE_GC_FLAT:
288	case DBGCVAR_TYPE_GC_FAR:
289	case DBGCVAR_TYPE_GC_PHYS:
290	case DBGCVAR_TYPE_HC_FLAT:
291	case DBGCVAR_TYPE_HC_PHYS:
292	case DBGCVAR_TYPE_NUMBER:
293	break;
294
295	case DBGCVAR_TYPE_STRING:
296	case DBGCVAR_TYPE_SYMBOL:
297	default:
298	return VERR_DBGC_PARSE_INCORRECT_ARG_TYPE;
299	}
300	NOREF(pDbgc);
301	return VINF_SUCCESS;
302	}
303
304
305	/**
306	* @callback_method_impl{FNDBGCOPUNARY, Boolean not (unary).}
307	*/
308	static DECLCALLBACK(int) dbgcOpBooleanNot(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult)
309	{
310	RT_NOREF1(enmCat);
311	LogFlow(("dbgcOpBooleanNot\n"));
312	pResult = pArg;
313	switch (pArg->enmType)
314	{
315	case DBGCVAR_TYPE_GC_FLAT:
316	pResult->u.u64Number = !pResult->u.GCFlat;
317	break;
318	case DBGCVAR_TYPE_GC_FAR:
319	pResult->u.u64Number = !pResult->u.GCFar.off && pResult->u.GCFar.sel <= 3;
320	break;
321	case DBGCVAR_TYPE_GC_PHYS:
322	pResult->u.u64Number = !pResult->u.GCPhys;
323	break;
324	case DBGCVAR_TYPE_HC_FLAT:
325	pResult->u.u64Number = !pResult->u.pvHCFlat;
326	break;
327	case DBGCVAR_TYPE_HC_PHYS:
328	pResult->u.u64Number = !pResult->u.HCPhys;
329	break;
330	case DBGCVAR_TYPE_NUMBER:
331	pResult->u.u64Number = !pResult->u.u64Number;
332	break;
333	case DBGCVAR_TYPE_STRING:
334	case DBGCVAR_TYPE_SYMBOL:
335	pResult->u.u64Number = !pResult->u64Range;
336	break;
337
338	case DBGCVAR_TYPE_UNKNOWN:
339	default:
340	return VERR_DBGC_PARSE_INCORRECT_ARG_TYPE;
341	}
342	pResult->enmType = DBGCVAR_TYPE_NUMBER;
343	NOREF(pDbgc);
344	return VINF_SUCCESS;
345	}
346
347
348	/**
349	* @callback_method_impl{FNDBGCOPUNARY, Bitwise not (unary).}
350	*/
351	static DECLCALLBACK(int) dbgcOpBitwiseNot(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult)
352	{
353	RT_NOREF1(enmCat);
354	LogFlow(("dbgcOpBitwiseNot\n"));
355	pResult = pArg;
356	switch (pArg->enmType)
357	{
358	case DBGCVAR_TYPE_GC_FLAT:
359	pResult->u.GCFlat = ~pResult->u.GCFlat;
360	break;
361	case DBGCVAR_TYPE_GC_FAR:
362	pResult->u.GCFar.off = ~pResult->u.GCFar.off;
363	break;
364	case DBGCVAR_TYPE_GC_PHYS:
365	pResult->u.GCPhys = ~pResult->u.GCPhys;
366	break;
367	case DBGCVAR_TYPE_HC_FLAT:
368	pResult->u.pvHCFlat = (void *)~(uintptr_t)pResult->u.pvHCFlat;
369	break;
370	case DBGCVAR_TYPE_HC_PHYS:
371	pResult->u.HCPhys = ~pResult->u.HCPhys;
372	break;
373	case DBGCVAR_TYPE_NUMBER:
374	pResult->u.u64Number = ~pResult->u.u64Number;
375	break;
376
377	case DBGCVAR_TYPE_STRING:
378	case DBGCVAR_TYPE_SYMBOL:
379	default:
380	return VERR_DBGC_PARSE_INCORRECT_ARG_TYPE;
381	}
382	NOREF(pDbgc);
383	return VINF_SUCCESS;
384	}
385
386
387	/**
388	* @callback_method_impl{FNDBGCOPUNARY, Reference variable (unary).}
389	*/
390	static DECLCALLBACK(int) dbgcOpVar(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult)
391	{
392	RT_NOREF1(enmCat);
393	LogFlow(("dbgcOpVar: %s\n", pArg->u.pszString));
394	AssertReturn(pArg->enmType == DBGCVAR_TYPE_SYMBOL, VERR_DBGC_PARSE_BUG);
395
396	/*
397	* Lookup the variable.
398	*/
399	const char *pszVar = pArg->u.pszString;
400	for (unsigned iVar = 0; iVar < pDbgc->cVars; iVar++)
401	{
402	if (!strcmp(pszVar, pDbgc->papVars[iVar]->szName))
403	{
404	*pResult = pDbgc->papVars[iVar]->Var;
405	return VINF_SUCCESS;
406	}
407	}
408
409	return VERR_DBGC_PARSE_VARIABLE_NOT_FOUND;
410	}
411
412
413	/**
414	* @callback_method_impl{FNDBGCOPUNARY, Reference register (unary).}
415	*/
416	DECLCALLBACK(int) dbgcOpRegister(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult)
417	{
418	LogFlow(("dbgcOpRegister: %s\n", pArg->u.pszString));
419	AssertReturn(pArg->enmType == DBGCVAR_TYPE_SYMBOL, VERR_DBGC_PARSE_BUG);
420
421	/* Detect references to hypervisor registers. */
422	const char *pszReg = pArg->u.pszString;
423	VMCPUID idCpu = pDbgc->idCpu;
424	if (pszReg[0] == '.')
425	{
426	pszReg++;
427	idCpu \|= DBGFREG_HYPER_VMCPUID;
428	}
429
430	/*
431	* If the desired result is a symbol, pass the argument along unmodified.
432	* This is a great help for "r @eax" and such, since it will be translated to "r eax".
433	*/
434	if (enmCat == DBGCVAR_CAT_SYMBOL)
435	{
436	int rc = DBGFR3RegNmValidate(pDbgc->pUVM, idCpu, pszReg);
437	if (RT_SUCCESS(rc))
438	DBGCVAR_INIT_STRING(pResult, pArg->u.pszString);
439	return rc;
440	}
441
442	/*
443	* Get the register.
444	*/
445	DBGFREGVALTYPE enmType;
446	DBGFREGVAL Value;
447	int rc = DBGFR3RegNmQuery(pDbgc->pUVM, idCpu, pszReg, &Value, &enmType);
448	if (RT_SUCCESS(rc))
449	{
450	switch (enmType)
451	{
452	case DBGFREGVALTYPE_U8:
453	DBGCVAR_INIT_NUMBER(pResult, Value.u8);
454	return VINF_SUCCESS;
455
456	case DBGFREGVALTYPE_U16:
457	DBGCVAR_INIT_NUMBER(pResult, Value.u16);
458	return VINF_SUCCESS;
459
460	case DBGFREGVALTYPE_U32:
461	DBGCVAR_INIT_NUMBER(pResult, Value.u32);
462	return VINF_SUCCESS;
463
464	case DBGFREGVALTYPE_U64:
465	DBGCVAR_INIT_NUMBER(pResult, Value.u64);
466	return VINF_SUCCESS;
467
468	case DBGFREGVALTYPE_U128:
469	DBGCVAR_INIT_NUMBER(pResult, Value.u128.s.Lo);
470	return VINF_SUCCESS;
471
472	case DBGFREGVALTYPE_U256:
473	DBGCVAR_INIT_NUMBER(pResult, Value.u256.QWords.qw0);
474	return VINF_SUCCESS;
475
476	case DBGFREGVALTYPE_U512:
477	DBGCVAR_INIT_NUMBER(pResult, Value.u512.QWords.qw0);
478	return VINF_SUCCESS;
479
480	case DBGFREGVALTYPE_R80:
481	#ifdef RT_COMPILER_WITH_80BIT_LONG_DOUBLE
482	DBGCVAR_INIT_NUMBER(pResult, (uint64_t)Value.r80Ex.lrd);
483	#else
484	DBGCVAR_INIT_NUMBER(pResult, (uint64_t)Value.r80Ex.sj64.u63Fraction);
485	#endif
486	return VINF_SUCCESS;
487
488	case DBGFREGVALTYPE_DTR:
489	DBGCVAR_INIT_NUMBER(pResult, Value.dtr.u64Base);
490	return VINF_SUCCESS;
491
492	case DBGFREGVALTYPE_INVALID:
493	case DBGFREGVALTYPE_END:
494	case DBGFREGVALTYPE_32BIT_HACK:
495	break;
496	}
497	rc = VERR_INTERNAL_ERROR_5;
498	}
499	return rc;
500	}
501
502
503	/**
504	* @callback_method_impl{FNDBGCOPUNARY, Flat address (unary).}
505	*/
506	DECLCALLBACK(int) dbgcOpAddrFlat(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult)
507	{
508	RT_NOREF1(enmCat);
509	LogFlow(("dbgcOpAddrFlat\n"));
510	DBGCVARTYPE enmType = DBGCVAR_ISHCPOINTER(pArg->enmType) ? DBGCVAR_TYPE_HC_FLAT : DBGCVAR_TYPE_GC_FLAT;
511	return DBGCCmdHlpConvert(&pDbgc->CmdHlp, pArg, enmType, true /fConvSyms/, pResult);
512	}
513
514
515	/**
516	* @callback_method_impl{FNDBGCOPUNARY, Physical address (unary).}
517	*/
518	DECLCALLBACK(int) dbgcOpAddrPhys(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult)
519	{
520	RT_NOREF1(enmCat);
521	LogFlow(("dbgcOpAddrPhys\n"));
522	DBGCVARTYPE enmType = DBGCVAR_ISHCPOINTER(pArg->enmType) ? DBGCVAR_TYPE_HC_PHYS : DBGCVAR_TYPE_GC_PHYS;
523	return DBGCCmdHlpConvert(&pDbgc->CmdHlp, pArg, enmType, true /fConvSyms/, pResult);
524	}
525
526
527	/**
528	* @callback_method_impl{FNDBGCOPUNARY, Physical host address (unary).}
529	*/
530	DECLCALLBACK(int) dbgcOpAddrHostPhys(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult)
531	{
532	RT_NOREF1(enmCat);
533	LogFlow(("dbgcOpAddrPhys\n"));
534	return DBGCCmdHlpConvert(&pDbgc->CmdHlp, pArg, DBGCVAR_TYPE_HC_PHYS, true /fConvSyms/, pResult);
535	}
536
537
538	/**
539	* @callback_method_impl{FNDBGCOPUNARY, Host address (unary).}
540	*/
541	DECLCALLBACK(int) dbgcOpAddrHost(PDBGC pDbgc, PCDBGCVAR pArg, DBGCVARCAT enmCat, PDBGCVAR pResult)
542	{
543	RT_NOREF1(enmCat);
544	LogFlow(("dbgcOpAddrHost\n"));
545	return DBGCCmdHlpConvert(&pDbgc->CmdHlp, pArg, DBGCVAR_TYPE_HC_FLAT, true /fConvSyms/, pResult);
546	}
547
548
549	/**
550	* @callback_method_impl{FNDBGCOPUNARY, Far address (unary).}
551	*/
552	static DECLCALLBACK(int) dbgcOpAddrFar(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
553	{
554	LogFlow(("dbgcOpAddrFar\n"));
555	int rc;
556
557	switch (pArg1->enmType)
558	{
559	case DBGCVAR_TYPE_SYMBOL:
560	rc = dbgcSymbolGet(pDbgc, pArg1->u.pszString, DBGCVAR_TYPE_NUMBER, pResult);
561	if (RT_FAILURE(rc))
562	return rc;
563	break;
564	case DBGCVAR_TYPE_NUMBER:
565	pResult = pArg1;
566	break;
567	default:
568	return VERR_DBGC_PARSE_INCORRECT_ARG_TYPE;
569	}
570	pResult->u.GCFar.sel = (RTSEL)pResult->u.u64Number;
571
572	/* common code for the two types we support. */
573	switch (pArg2->enmType)
574	{
575	case DBGCVAR_TYPE_GC_FLAT:
576	pResult->u.GCFar.off = pArg2->u.GCFlat;
577	pResult->enmType = DBGCVAR_TYPE_GC_FAR;
578	break;
579
580	case DBGCVAR_TYPE_HC_FLAT:
581	pResult->u.pvHCFlat = (void *)(uintptr_t)pArg2->u.GCFlat;
582	pResult->enmType = DBGCVAR_TYPE_GC_FAR;
583	break;
584
585	case DBGCVAR_TYPE_NUMBER:
586	pResult->u.GCFar.off = (RTGCPTR)pArg2->u.u64Number;
587	pResult->enmType = DBGCVAR_TYPE_GC_FAR;
588	break;
589
590	case DBGCVAR_TYPE_SYMBOL:
591	{
592	DBGCVAR Var;
593	rc = dbgcSymbolGet(pDbgc, pArg2->u.pszString, DBGCVAR_TYPE_NUMBER, &Var);
594	if (RT_FAILURE(rc))
595	return rc;
596	pResult->u.GCFar.off = (RTGCPTR)Var.u.u64Number;
597	pResult->enmType = DBGCVAR_TYPE_GC_FAR;
598	break;
599	}
600
601	default:
602	return VERR_DBGC_PARSE_INCORRECT_ARG_TYPE;
603	}
604	return VINF_SUCCESS;
605
606	}
607
608
609	/**
610	* Multiplication operator (binary).
611	*
612	* @returns VINF_SUCCESS on success.
613	* @returns VBox evaluation / parsing error code on failure.
614	* The caller does the bitching.
615	* @param pDbgc Debugger console instance data.
616	* @param pArg1 The first argument.
617	* @param pArg2 The 2nd argument.
618	* @param pResult Where to store the result.
619	*/
620	static DECLCALLBACK(int) dbgcOpMult(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
621	{
622	LogFlow(("dbgcOpMult\n"));
623	DBGC_GEN_ARIT_POINTER_TO_THE_LEFT(pArg1, pArg2);
624	DBGC_GEN_ARIT_BINARY_OP(pDbgc, pArg1, pArg2, pResult, *, false);
625	}
626
627
628	/**
629	* Division operator (binary).
630	*
631	* @returns VINF_SUCCESS on success.
632	* @returns VBox evaluation / parsing error code on failure.
633	* The caller does the bitching.
634	* @param pDbgc Debugger console instance data.
635	* @param pArg1 The first argument.
636	* @param pArg2 The 2nd argument.
637	* @param pResult Where to store the result.
638	*/
639	static DECLCALLBACK(int) dbgcOpDiv(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
640	{
641	LogFlow(("dbgcOpDiv\n"));
642	DBGC_GEN_ARIT_BINARY_OP(pDbgc, pArg1, pArg2, pResult, /, true);
643	}
644
645
646	/**
647	* Modulus operator (binary).
648	*
649	* @returns VINF_SUCCESS on success.
650	* @returns VBox evaluation / parsing error code on failure.
651	* The caller does the bitching.
652	* @param pDbgc Debugger console instance data.
653	* @param pArg1 The first argument.
654	* @param pArg2 The 2nd argument.
655	* @param pResult Where to store the result.
656	*/
657	static DECLCALLBACK(int) dbgcOpMod(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
658	{
659	LogFlow(("dbgcOpMod\n"));
660	DBGC_GEN_ARIT_BINARY_OP(pDbgc, pArg1, pArg2, pResult, %, false);
661	}
662
663
664	/**
665	* Addition operator (binary).
666	*
667	* @returns VINF_SUCCESS on success.
668	* @returns VBox evaluation / parsing error code on failure.
669	* The caller does the bitching.
670	* @param pDbgc Debugger console instance data.
671	* @param pArg1 The first argument.
672	* @param pArg2 The 2nd argument.
673	* @param pResult Where to store the result.
674	*/
675	static DECLCALLBACK(int) dbgcOpAdd(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
676	{
677	LogFlow(("dbgcOpAdd\n"));
678
679	/*
680	* An addition operation will return (when possible) the left side type in the
681	* expression. We make an omission for numbers, where we'll take the right side
682	* type instead. An expression where only the left hand side is a symbol we'll
683	* use the right hand type to try resolve it.
684	*/
685	if ( pArg1->enmType == DBGCVAR_TYPE_STRING
686	\|\| pArg2->enmType == DBGCVAR_TYPE_STRING)
687	return VERR_DBGC_PARSE_INVALID_OPERATION; /** @todo string contactenation later. */
688
689	if ( (pArg1->enmType == DBGCVAR_TYPE_NUMBER && pArg2->enmType != DBGCVAR_TYPE_SYMBOL)
690	\|\| (pArg1->enmType == DBGCVAR_TYPE_SYMBOL && pArg2->enmType != DBGCVAR_TYPE_SYMBOL))
691	{
692	PCDBGCVAR pTmp = pArg2;
693	pArg2 = pArg1;
694	pArg1 = pTmp;
695	}
696
697	DBGCVAR Sym1, Sym2;
698	if (pArg1->enmType == DBGCVAR_TYPE_SYMBOL)
699	{
700	int rc = dbgcSymbolGet(pDbgc, pArg1->u.pszString, DBGCVAR_TYPE_ANY, &Sym1);
701	if (RT_FAILURE(rc))
702	return rc;
703	pArg1 = &Sym1;
704
705	rc = dbgcSymbolGet(pDbgc, pArg2->u.pszString, DBGCVAR_TYPE_ANY, &Sym2);
706	if (RT_FAILURE(rc))
707	return rc;
708	pArg2 = &Sym2;
709	}
710
711	int rc;
712	DBGCVAR Var;
713	DBGCVAR Var2;
714	switch (pArg1->enmType)
715	{
716	/*
717	* GC Flat
718	*/
719	case DBGCVAR_TYPE_GC_FLAT:
720	switch (pArg2->enmType)
721	{
722	case DBGCVAR_TYPE_HC_FLAT:
723	case DBGCVAR_TYPE_HC_PHYS:
724	return VERR_DBGC_PARSE_INVALID_OPERATION;
725	default:
726	pResult = pArg1;
727	rc = dbgcOpAddrFlat(pDbgc, pArg2, DBGCVAR_CAT_ANY, &Var);
728	if (RT_FAILURE(rc))
729	return rc;
730	pResult->u.GCFlat += pArg2->u.GCFlat;
731	break;
732	}
733	break;
734
735	/*
736	* GC Far
737	*/
738	case DBGCVAR_TYPE_GC_FAR:
739	switch (pArg2->enmType)
740	{
741	case DBGCVAR_TYPE_HC_FLAT:
742	case DBGCVAR_TYPE_HC_PHYS:
743	return VERR_DBGC_PARSE_INVALID_OPERATION;
744	case DBGCVAR_TYPE_NUMBER:
745	pResult = pArg1;
746	pResult->u.GCFar.off += (RTGCPTR)pArg2->u.u64Number;
747	break;
748	default:
749	rc = dbgcOpAddrFlat(pDbgc, pArg1, DBGCVAR_CAT_ANY, pResult);
750	if (RT_FAILURE(rc))
751	return rc;
752	rc = dbgcOpAddrFlat(pDbgc, pArg2, DBGCVAR_CAT_ANY, &Var);
753	if (RT_FAILURE(rc))
754	return rc;
755	pResult->u.GCFlat += pArg2->u.GCFlat;
756	break;
757	}
758	break;
759
760	/*
761	* GC Phys
762	*/
763	case DBGCVAR_TYPE_GC_PHYS:
764	switch (pArg2->enmType)
765	{
766	case DBGCVAR_TYPE_HC_FLAT:
767	case DBGCVAR_TYPE_HC_PHYS:
768	return VERR_DBGC_PARSE_INVALID_OPERATION;
769	default:
770	pResult = pArg1;
771	rc = dbgcOpAddrPhys(pDbgc, pArg2, DBGCVAR_CAT_ANY, &Var);
772	if (RT_FAILURE(rc))
773	return rc;
774	if (Var.enmType != DBGCVAR_TYPE_GC_PHYS)
775	return VERR_DBGC_PARSE_INVALID_OPERATION;
776	pResult->u.GCPhys += Var.u.GCPhys;
777	break;
778	}
779	break;
780
781	/*
782	* HC Flat
783	*/
784	case DBGCVAR_TYPE_HC_FLAT:
785	pResult = pArg1;
786	rc = dbgcOpAddrHost(pDbgc, pArg2, DBGCVAR_CAT_ANY, &Var2);
787	if (RT_FAILURE(rc))
788	return rc;
789	rc = dbgcOpAddrFlat(pDbgc, &Var2, DBGCVAR_CAT_ANY, &Var);
790	if (RT_FAILURE(rc))
791	return rc;
792	pResult->u.pvHCFlat = (char *)pResult->u.pvHCFlat + (uintptr_t)Var.u.pvHCFlat;
793	break;
794
795	/*
796	* HC Phys
797	*/
798	case DBGCVAR_TYPE_HC_PHYS:
799	pResult = pArg1;
800	rc = dbgcOpAddrHostPhys(pDbgc, pArg2, DBGCVAR_CAT_ANY, &Var);
801	if (RT_FAILURE(rc))
802	return rc;
803	pResult->u.HCPhys += Var.u.HCPhys;
804	break;
805
806	/*
807	* Numbers (see start of function)
808	*/
809	case DBGCVAR_TYPE_NUMBER:
810	pResult = pArg1;
811	switch (pArg2->enmType)
812	{
813	case DBGCVAR_TYPE_SYMBOL:
814	rc = dbgcSymbolGet(pDbgc, pArg2->u.pszString, DBGCVAR_TYPE_NUMBER, &Var);
815	if (RT_FAILURE(rc))
816	return rc;
817	RT_FALL_THRU();
818	case DBGCVAR_TYPE_NUMBER:
819	pResult->u.u64Number += pArg2->u.u64Number;
820	break;
821	default:
822	return VERR_DBGC_PARSE_INVALID_OPERATION;
823	}
824	break;
825
826	default:
827	return VERR_DBGC_PARSE_INVALID_OPERATION;
828
829	}
830	return VINF_SUCCESS;
831	}
832
833
834	/**
835	* Subtraction operator (binary).
836	*
837	* @returns VINF_SUCCESS on success.
838	* @returns VBox evaluation / parsing error code on failure.
839	* The caller does the bitching.
840	* @param pDbgc Debugger console instance data.
841	* @param pArg1 The first argument.
842	* @param pArg2 The 2nd argument.
843	* @param pResult Where to store the result.
844	*/
845	static DECLCALLBACK(int) dbgcOpSub(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
846	{
847	LogFlow(("dbgcOpSub\n"));
848
849	/*
850	* An subtraction operation will return the left side type in the expression.
851	* However, if the left hand side is a number and the right hand a pointer of
852	* some kind we'll convert the left hand side to the same type as the right hand.
853	* Any symbols will be resolved, strings will be rejected.
854	*/
855	DBGCVAR Sym1, Sym2;
856	if ( pArg2->enmType == DBGCVAR_TYPE_SYMBOL
857	&& ( pArg1->enmType == DBGCVAR_TYPE_NUMBER
858	\|\| pArg1->enmType == DBGCVAR_TYPE_SYMBOL))
859	{
860	int rc = dbgcSymbolGet(pDbgc, pArg2->u.pszString, DBGCVAR_TYPE_ANY, &Sym2);
861	if (RT_FAILURE(rc))
862	return rc;
863	pArg2 = &Sym2;
864	}
865
866	if ( pArg1->enmType == DBGCVAR_TYPE_STRING
867	\|\| pArg2->enmType == DBGCVAR_TYPE_STRING)
868	return VERR_DBGC_PARSE_INVALID_OPERATION;
869
870	if (pArg1->enmType == DBGCVAR_TYPE_SYMBOL)
871	{
872	DBGCVARTYPE enmType;
873	switch (pArg2->enmType)
874	{
875	case DBGCVAR_TYPE_NUMBER:
876	enmType = DBGCVAR_TYPE_ANY;
877	break;
878	case DBGCVAR_TYPE_GC_FLAT:
879	case DBGCVAR_TYPE_GC_PHYS:
880	case DBGCVAR_TYPE_HC_FLAT:
881	case DBGCVAR_TYPE_HC_PHYS:
882	enmType = pArg2->enmType;
883	break;
884	case DBGCVAR_TYPE_GC_FAR:
885	enmType = DBGCVAR_TYPE_GC_FLAT;
886	break;
887	default: AssertFailedReturn(VERR_DBGC_IPE);
888	}
889	if (enmType != DBGCVAR_TYPE_STRING)
890	{
891	int rc = dbgcSymbolGet(pDbgc, pArg1->u.pszString, DBGCVAR_TYPE_ANY, &Sym1);
892	if (RT_FAILURE(rc))
893	return rc;
894	pArg1 = &Sym1;
895	}
896	}
897	else if (pArg1->enmType == DBGCVAR_TYPE_NUMBER)
898	{
899	PFNDBGCOPUNARY pOp = NULL;
900	switch (pArg2->enmType)
901	{
902	case DBGCVAR_TYPE_GC_FAR:
903	case DBGCVAR_TYPE_GC_FLAT:
904	pOp = dbgcOpAddrFlat;
905	break;
906	case DBGCVAR_TYPE_GC_PHYS:
907	pOp = dbgcOpAddrPhys;
908	break;
909	case DBGCVAR_TYPE_HC_FLAT:
910	pOp = dbgcOpAddrHost;
911	break;
912	case DBGCVAR_TYPE_HC_PHYS:
913	pOp = dbgcOpAddrHostPhys;
914	break;
915	case DBGCVAR_TYPE_NUMBER:
916	break;
917	default: AssertFailedReturn(VERR_DBGC_IPE);
918	}
919	if (pOp)
920	{
921	int rc = pOp(pDbgc, pArg1, DBGCVAR_CAT_ANY, &Sym1);
922	if (RT_FAILURE(rc))
923	return rc;
924	pArg1 = &Sym1;
925	}
926	}
927
928	/*
929	* Normal processing.
930	*/
931	int rc;
932	DBGCVAR Var;
933	DBGCVAR Var2;
934	switch (pArg1->enmType)
935	{
936	/*
937	* GC Flat
938	*/
939	case DBGCVAR_TYPE_GC_FLAT:
940	switch (pArg2->enmType)
941	{
942	case DBGCVAR_TYPE_HC_FLAT:
943	case DBGCVAR_TYPE_HC_PHYS:
944	return VERR_DBGC_PARSE_INVALID_OPERATION;
945	default:
946	pResult = pArg1;
947	rc = dbgcOpAddrFlat(pDbgc, pArg2, DBGCVAR_CAT_ANY, &Var);
948	if (RT_FAILURE(rc))
949	return rc;
950	pResult->u.GCFlat -= pArg2->u.GCFlat;
951	break;
952	}
953	break;
954
955	/*
956	* GC Far
957	*/
958	case DBGCVAR_TYPE_GC_FAR:
959	switch (pArg2->enmType)
960	{
961	case DBGCVAR_TYPE_HC_FLAT:
962	case DBGCVAR_TYPE_HC_PHYS:
963	return VERR_DBGC_PARSE_INVALID_OPERATION;
964	case DBGCVAR_TYPE_NUMBER:
965	pResult = pArg1;
966	pResult->u.GCFar.off -= (RTGCPTR)pArg2->u.u64Number;
967	break;
968	default:
969	rc = dbgcOpAddrFlat(pDbgc, pArg1, DBGCVAR_CAT_ANY, pResult);
970	if (RT_FAILURE(rc))
971	return rc;
972	rc = dbgcOpAddrFlat(pDbgc, pArg2, DBGCVAR_CAT_ANY, &Var);
973	if (RT_FAILURE(rc))
974	return rc;
975	pResult->u.GCFlat -= pArg2->u.GCFlat;
976	break;
977	}
978	break;
979
980	/*
981	* GC Phys
982	*/
983	case DBGCVAR_TYPE_GC_PHYS:
984	switch (pArg2->enmType)
985	{
986	case DBGCVAR_TYPE_HC_FLAT:
987	case DBGCVAR_TYPE_HC_PHYS:
988	return VERR_DBGC_PARSE_INVALID_OPERATION;
989	default:
990	pResult = pArg1;
991	rc = dbgcOpAddrPhys(pDbgc, pArg2, DBGCVAR_CAT_ANY, &Var);
992	if (RT_FAILURE(rc))
993	return rc;
994	if (Var.enmType != DBGCVAR_TYPE_GC_PHYS)
995	return VERR_DBGC_PARSE_INVALID_OPERATION;
996	pResult->u.GCPhys -= Var.u.GCPhys;
997	break;
998	}
999	break;
1000
1001	/*
1002	* HC Flat
1003	*/
1004	case DBGCVAR_TYPE_HC_FLAT:
1005	pResult = pArg1;
1006	rc = dbgcOpAddrHost(pDbgc, pArg2, DBGCVAR_CAT_ANY, &Var2);
1007	if (RT_FAILURE(rc))
1008	return rc;
1009	rc = dbgcOpAddrFlat(pDbgc, &Var2, DBGCVAR_CAT_ANY, &Var);
1010	if (RT_FAILURE(rc))
1011	return rc;
1012	pResult->u.pvHCFlat = (char *)pResult->u.pvHCFlat - (uintptr_t)Var.u.pvHCFlat;
1013	break;
1014
1015	/*
1016	* HC Phys
1017	*/
1018	case DBGCVAR_TYPE_HC_PHYS:
1019	pResult = pArg1;
1020	rc = dbgcOpAddrHostPhys(pDbgc, pArg2, DBGCVAR_CAT_ANY, &Var);
1021	if (RT_FAILURE(rc))
1022	return rc;
1023	pResult->u.HCPhys -= Var.u.HCPhys;
1024	break;
1025
1026	/*
1027	* Numbers (see start of function)
1028	*/
1029	case DBGCVAR_TYPE_NUMBER:
1030	pResult = pArg1;
1031	switch (pArg2->enmType)
1032	{
1033	case DBGCVAR_TYPE_SYMBOL:
1034	rc = dbgcSymbolGet(pDbgc, pArg2->u.pszString, DBGCVAR_TYPE_NUMBER, &Var);
1035	if (RT_FAILURE(rc))
1036	return rc;
1037	RT_FALL_THRU();
1038	case DBGCVAR_TYPE_NUMBER:
1039	pResult->u.u64Number -= pArg2->u.u64Number;
1040	break;
1041	default:
1042	return VERR_DBGC_PARSE_INVALID_OPERATION;
1043	}
1044	break;
1045
1046	default:
1047	return VERR_DBGC_PARSE_INVALID_OPERATION;
1048
1049	}
1050	return VINF_SUCCESS;
1051	}
1052
1053
1054	/**
1055	* Bitwise shift left operator (binary).
1056	*
1057	* @returns VINF_SUCCESS on success.
1058	* @returns VBox evaluation / parsing error code on failure.
1059	* The caller does the bitching.
1060	* @param pDbgc Debugger console instance data.
1061	* @param pArg1 The first argument.
1062	* @param pArg2 The 2nd argument.
1063	* @param pResult Where to store the result.
1064	*/
1065	static DECLCALLBACK(int) dbgcOpBitwiseShiftLeft(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
1066	{
1067	LogFlow(("dbgcOpBitwiseShiftLeft\n"));
1068	DBGC_GEN_ARIT_BINARY_OP(pDbgc, pArg1, pArg2, pResult, <<, false);
1069	}
1070
1071
1072	/**
1073	* Bitwise shift right operator (binary).
1074	*
1075	* @returns VINF_SUCCESS on success.
1076	* @returns VBox evaluation / parsing error code on failure.
1077	* The caller does the bitching.
1078	* @param pDbgc Debugger console instance data.
1079	* @param pArg1 The first argument.
1080	* @param pArg2 The 2nd argument.
1081	* @param pResult Where to store the result.
1082	*/
1083	static DECLCALLBACK(int) dbgcOpBitwiseShiftRight(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
1084	{
1085	LogFlow(("dbgcOpBitwiseShiftRight\n"));
1086	DBGC_GEN_ARIT_BINARY_OP(pDbgc, pArg1, pArg2, pResult, >>, false);
1087	}
1088
1089
1090	/**
1091	* Bitwise and operator (binary).
1092	*
1093	* @returns VINF_SUCCESS on success.
1094	* @returns VBox evaluation / parsing error code on failure.
1095	* The caller does the bitching.
1096	* @param pDbgc Debugger console instance data.
1097	* @param pArg1 The first argument.
1098	* @param pArg2 The 2nd argument.
1099	* @param pResult Where to store the result.
1100	*/
1101	static DECLCALLBACK(int) dbgcOpBitwiseAnd(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
1102	{
1103	LogFlow(("dbgcOpBitwiseAnd\n"));
1104	DBGC_GEN_ARIT_POINTER_TO_THE_LEFT(pArg1, pArg2);
1105	DBGC_GEN_ARIT_BINARY_OP(pDbgc, pArg1, pArg2, pResult, &, false);
1106	}
1107
1108
1109	/**
1110	* Bitwise exclusive or operator (binary).
1111	*
1112	* @returns VINF_SUCCESS on success.
1113	* @returns VBox evaluation / parsing error code on failure.
1114	* The caller does the bitching.
1115	* @param pDbgc Debugger console instance data.
1116	* @param pArg1 The first argument.
1117	* @param pArg2 The 2nd argument.
1118	* @param pResult Where to store the result.
1119	*/
1120	static DECLCALLBACK(int) dbgcOpBitwiseXor(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
1121	{
1122	LogFlow(("dbgcOpBitwiseXor\n"));
1123	DBGC_GEN_ARIT_POINTER_TO_THE_LEFT(pArg1, pArg2);
1124	DBGC_GEN_ARIT_BINARY_OP(pDbgc, pArg1, pArg2, pResult, ^, false);
1125	}
1126
1127
1128	/**
1129	* Bitwise inclusive or operator (binary).
1130	*
1131	* @returns VINF_SUCCESS on success.
1132	* @returns VBox evaluation / parsing error code on failure.
1133	* The caller does the bitching.
1134	* @param pDbgc Debugger console instance data.
1135	* @param pArg1 The first argument.
1136	* @param pArg2 The 2nd argument.
1137	* @param pResult Where to store the result.
1138	*/
1139	static DECLCALLBACK(int) dbgcOpBitwiseOr(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
1140	{
1141	LogFlow(("dbgcOpBitwiseOr\n"));
1142	DBGC_GEN_ARIT_POINTER_TO_THE_LEFT(pArg1, pArg2);
1143	DBGC_GEN_ARIT_BINARY_OP(pDbgc, pArg1, pArg2, pResult, \|, false);
1144	}
1145
1146
1147	/**
1148	* Boolean and operator (binary).
1149	*
1150	* @returns VINF_SUCCESS on success.
1151	* @returns VBox evaluation / parsing error code on failure.
1152	* The caller does the bitching.
1153	* @param pDbgc Debugger console instance data.
1154	* @param pArg1 The first argument.
1155	* @param pArg2 The 2nd argument.
1156	* @param pResult Where to store the result.
1157	*/
1158	static DECLCALLBACK(int) dbgcOpBooleanAnd(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
1159	{
1160	LogFlow(("dbgcOpBooleanAnd\n"));
1161	/** @todo force numeric return value? */
1162	DBGC_GEN_ARIT_BINARY_OP(pDbgc, pArg1, pArg2, pResult, &&, false);
1163	}
1164
1165
1166	/**
1167	* Boolean or operator (binary).
1168	*
1169	* @returns VINF_SUCCESS on success.
1170	* @returns VBox evaluation / parsing error code on failure.
1171	* The caller does the bitching.
1172	* @param pDbgc Debugger console instance data.
1173	* @param pArg1 The first argument.
1174	* @param pArg2 The 2nd argument.
1175	* @param pResult Where to store the result.
1176	*/
1177	static DECLCALLBACK(int) dbgcOpBooleanOr(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
1178	{
1179	LogFlow(("dbgcOpBooleanOr\n"));
1180	/** @todo force numeric return value? */
1181	DBGC_GEN_ARIT_BINARY_OP(pDbgc, pArg1, pArg2, pResult, \|\|, false);
1182	}
1183
1184
1185	/**
1186	* Range to operator (binary).
1187	*
1188	* @returns VINF_SUCCESS on success.
1189	* @returns VBox evaluation / parsing error code on failure.
1190	* The caller does the bitching.
1191	* @param pDbgc Debugger console instance data.
1192	* @param pArg1 The first argument.
1193	* @param pArg2 The 2nd argument.
1194	* @param pResult Where to store the result.
1195	*/
1196	static DECLCALLBACK(int) dbgcOpRangeLength(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
1197	{
1198	LogFlow(("dbgcOpRangeLength\n"));
1199
1200	if (pArg1->enmType == DBGCVAR_TYPE_STRING)
1201	return VERR_DBGC_PARSE_INVALID_OPERATION;
1202
1203	/*
1204	* Make result. Symbols needs to be resolved.
1205	*/
1206	if (pArg1->enmType == DBGCVAR_TYPE_SYMBOL)
1207	{
1208	int rc = dbgcSymbolGet(pDbgc, pArg1->u.pszString, DBGCVAR_TYPE_ANY, pResult);
1209	if (RT_FAILURE(rc))
1210	return rc;
1211	}
1212	else
1213	pResult = pArg1;
1214
1215	/*
1216	* Convert 2nd argument to element count.
1217	*/
1218	pResult->enmRangeType = DBGCVAR_RANGE_ELEMENTS;
1219	switch (pArg2->enmType)
1220	{
1221	case DBGCVAR_TYPE_NUMBER:
1222	pResult->u64Range = pArg2->u.u64Number;
1223	break;
1224
1225	case DBGCVAR_TYPE_SYMBOL:
1226	{
1227	int rc = dbgcSymbolGet(pDbgc, pArg2->u.pszString, DBGCVAR_TYPE_NUMBER, pResult);
1228	if (RT_FAILURE(rc))
1229	return rc;
1230	pResult->u64Range = pArg2->u.u64Number;
1231	break;
1232	}
1233
1234	case DBGCVAR_TYPE_STRING:
1235	default:
1236	return VERR_DBGC_PARSE_INVALID_OPERATION;
1237	}
1238
1239	return VINF_SUCCESS;
1240	}
1241
1242
1243	/**
1244	* Range to operator (binary).
1245	*
1246	* @returns VINF_SUCCESS on success.
1247	* @returns VBox evaluation / parsing error code on failure.
1248	* The caller does the bitching.
1249	* @param pDbgc Debugger console instance data.
1250	* @param pArg1 The first argument.
1251	* @param pArg2 The 2nd argument.
1252	* @param pResult Where to store the result.
1253	*/
1254	static DECLCALLBACK(int) dbgcOpRangeLengthBytes(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
1255	{
1256	LogFlow(("dbgcOpRangeLengthBytes\n"));
1257	int rc = dbgcOpRangeLength(pDbgc, pArg1, pArg2, pResult);
1258	if (RT_SUCCESS(rc))
1259	pResult->enmRangeType = DBGCVAR_RANGE_BYTES;
1260	return rc;
1261	}
1262
1263
1264	/**
1265	* Range to operator (binary).
1266	*
1267	* @returns VINF_SUCCESS on success.
1268	* @returns VBox evaluation / parsing error code on failure.
1269	* The caller does the bitching.
1270	* @param pDbgc Debugger console instance data.
1271	* @param pArg1 The first argument.
1272	* @param pArg2 The 2nd argument.
1273	* @param pResult Where to store the result.
1274	*/
1275	static DECLCALLBACK(int) dbgcOpRangeTo(PDBGC pDbgc, PCDBGCVAR pArg1, PCDBGCVAR pArg2, PDBGCVAR pResult)
1276	{
1277	LogFlow(("dbgcOpRangeTo\n"));
1278
1279	/*
1280	* Calc number of bytes between the two args.
1281	*/
1282	DBGCVAR Diff;
1283	int rc = dbgcOpSub(pDbgc, pArg2, pArg1, &Diff);
1284	if (RT_FAILURE(rc))
1285	return rc;
1286
1287	/*
1288	* Use the diff as the range of Arg1.
1289	*/
1290	pResult = pArg1;
1291	pResult->enmRangeType = DBGCVAR_RANGE_BYTES;
1292	switch (Diff.enmType)
1293	{
1294	case DBGCVAR_TYPE_GC_FLAT:
1295	pResult->u64Range = (RTGCUINTPTR)Diff.u.GCFlat;
1296	break;
1297	case DBGCVAR_TYPE_GC_PHYS:
1298	pResult->u64Range = Diff.u.GCPhys;
1299	break;
1300	case DBGCVAR_TYPE_HC_FLAT:
1301	pResult->u64Range = (uintptr_t)Diff.u.pvHCFlat;
1302	break;
1303	case DBGCVAR_TYPE_HC_PHYS:
1304	pResult->u64Range = Diff.u.HCPhys;
1305	break;
1306	case DBGCVAR_TYPE_NUMBER:
1307	pResult->u64Range = Diff.u.u64Number;
1308	break;
1309
1310	case DBGCVAR_TYPE_GC_FAR:
1311	case DBGCVAR_TYPE_STRING:
1312	case DBGCVAR_TYPE_SYMBOL:
1313	default:
1314	AssertMsgFailed(("Impossible!\n"));
1315	return VERR_DBGC_PARSE_INVALID_OPERATION;
1316	}
1317
1318	return VINF_SUCCESS;
1319	}
1320
1321
1322	/**
1323	* Searches for an operator descriptor which matches the start of
1324	* the expression given us.
1325	*
1326	* @returns Pointer to the operator on success.
1327	* @param pDbgc The debug console instance.
1328	* @param pszExpr Pointer to the expression string which might start with an operator.
1329	* @param fPreferBinary Whether to favour binary or unary operators.
1330	* Caller must assert that it's the desired type! Both types will still
1331	* be returned, this is only for resolving duplicates.
1332	* @param chPrev The previous char. Some operators requires a blank in front of it.
1333	*/
1334	PCDBGCOP dbgcOperatorLookup(PDBGC pDbgc, const char *pszExpr, bool fPreferBinary, char chPrev)
1335	{
1336	PCDBGCOP pOp = NULL;
1337	for (unsigned iOp = 0; iOp < RT_ELEMENTS(g_aDbgcOps); iOp++)
1338	{
1339	if ( g_aDbgcOps[iOp].szName[0] == pszExpr[0]
1340	&& (!g_aDbgcOps[iOp].szName[1] \|\| g_aDbgcOps[iOp].szName[1] == pszExpr[1])
1341	&& (!g_aDbgcOps[iOp].szName[2] \|\| g_aDbgcOps[iOp].szName[2] == pszExpr[2]))
1342	{
1343	/*
1344	* Check that we don't mistake it for some other operator which have more chars.
1345	*/
1346	unsigned j;
1347	for (j = iOp + 1; j < RT_ELEMENTS(g_aDbgcOps); j++)
1348	if ( g_aDbgcOps[j].cchName > g_aDbgcOps[iOp].cchName
1349	&& g_aDbgcOps[j].szName[0] == pszExpr[0]
1350	&& (!g_aDbgcOps[j].szName[1] \|\| g_aDbgcOps[j].szName[1] == pszExpr[1])
1351	&& (!g_aDbgcOps[j].szName[2] \|\| g_aDbgcOps[j].szName[2] == pszExpr[2]) )
1352	break;
1353	if (j < RT_ELEMENTS(g_aDbgcOps))
1354	continue; /* we'll catch it later. (for theoretical +,++,+++ cases.) */
1355	pOp = &g_aDbgcOps[iOp];
1356
1357	/*
1358	* Preferred type?
1359	*/
1360	if (g_aDbgcOps[iOp].fBinary == fPreferBinary)
1361	break;
1362	}
1363	}
1364
1365	if (pOp)
1366	Log2(("dbgcOperatorLookup: pOp=%p %s\n", pOp, pOp->szName));
1367	NOREF(pDbgc); NOREF(chPrev);
1368	return pOp;
1369	}
1370

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source: vbox/trunk/src/VBox/Debugger/DBGCOps.cpp@ 86186

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