dis.h@ 101656

Last change on this file since 101656 was 101546, checked in by vboxsync, 13 months ago
DIS: Added DIS_FMT_FLAGS_BYTES_WIDTH_MASK/SHIFT/MAKE and DIS_FMT_FLAGS_C_HEX flags. bugref:10371
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File size: 24.5 KB

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1	/** @file
2	* DIS - The VirtualBox Disassembler.
3	*/
4
5	/*
6	* Copyright (C) 2006-2023 Oracle and/or its affiliates.
7	*
8	* This file is part of VirtualBox base platform packages, as
9	* available from https://www.virtualbox.org.
10	*
11	* This program is free software; you can redistribute it and/or
12	* modify it under the terms of the GNU General Public License
13	* as published by the Free Software Foundation, in version 3 of the
14	* License.
15	*
16	* This program is distributed in the hope that it will be useful, but
17	* WITHOUT ANY WARRANTY; without even the implied warranty of
18	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
19	* General Public License for more details.
20	*
21	* You should have received a copy of the GNU General Public License
22	* along with this program; if not, see <https://www.gnu.org/licenses>.
23	*
24	* The contents of this file may alternatively be used under the terms
25	* of the Common Development and Distribution License Version 1.0
26	* (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
27	* in the VirtualBox distribution, in which case the provisions of the
28	* CDDL are applicable instead of those of the GPL.
29	*
30	* You may elect to license modified versions of this file under the
31	* terms and conditions of either the GPL or the CDDL or both.
32	*
33	* SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
34	*/
35
36	#ifndef VBOX_INCLUDED_dis_h
37	#define VBOX_INCLUDED_dis_h
38	#ifndef RT_WITHOUT_PRAGMA_ONCE
39	# pragma once
40	#endif
41
42	#include <VBox/types.h>
43	#include <VBox/dis-x86-amd64.h>
44	#if defined(VBOX_DIS_WITH_ARMV8)
45	# include <VBox/dis-armv8.h>
46	#endif
47	#include <iprt/assert.h>
48
49
50	RT_C_DECLS_BEGIN
51
52	/** @defgroup grp_dis VBox Disassembler
53	* @{ */
54
55	/** @name Operand type (DISOPCODEX86::fOpType).
56	* @{
57	*/
58	#define DISOPTYPE_INVALID RT_BIT_32(0)
59	#define DISOPTYPE_HARMLESS RT_BIT_32(1)
60	#define DISOPTYPE_CONTROLFLOW RT_BIT_32(2)
61	#define DISOPTYPE_POTENTIALLY_DANGEROUS RT_BIT_32(3)
62	#define DISOPTYPE_DANGEROUS RT_BIT_32(4)
63	#define DISOPTYPE_PORTIO RT_BIT_32(5)
64	#define DISOPTYPE_PRIVILEGED RT_BIT_32(6)
65	#define DISOPTYPE_PRIVILEGED_NOTRAP RT_BIT_32(7)
66	#define DISOPTYPE_UNCOND_CONTROLFLOW RT_BIT_32(8)
67	#define DISOPTYPE_RELATIVE_CONTROLFLOW RT_BIT_32(9)
68	#define DISOPTYPE_COND_CONTROLFLOW RT_BIT_32(10)
69	#define DISOPTYPE_INTERRUPT RT_BIT_32(11)
70	#define DISOPTYPE_ILLEGAL RT_BIT_32(12)
71	#define DISOPTYPE_RRM_DANGEROUS RT_BIT_32(14) /*< Some additional dangerous ones when recompiling raw r0. /
72	#define DISOPTYPE_RRM_DANGEROUS_16 RT_BIT_32(15) /*< Some additional dangerous ones when recompiling 16-bit raw r0. /
73	#define DISOPTYPE_RRM_MASK (DISOPTYPE_RRM_DANGEROUS \| DISOPTYPE_RRM_DANGEROUS_16)
74	#define DISOPTYPE_INHIBIT_IRQS RT_BIT_32(16) /*< Will or can inhibit irqs (sti, pop ss, mov ss) /
75
76	#define DISOPTYPE_X86_PORTIO_READ RT_BIT_32(17)
77	#define DISOPTYPE_X86_PORTIO_WRITE RT_BIT_32(18)
78	#define DISOPTYPE_X86_INVALID_64 RT_BIT_32(19) /*< Invalid in 64 bits mode /
79	#define DISOPTYPE_X86_ONLY_64 RT_BIT_32(20) /*< Only valid in 64 bits mode /
80	#define DISOPTYPE_X86_DEFAULT_64_OP_SIZE RT_BIT_32(21) /*< Default 64 bits operand size /
81	#define DISOPTYPE_X86_FORCED_64_OP_SIZE RT_BIT_32(22) /*< Forced 64 bits operand size; regardless of prefix bytes /
82	#define DISOPTYPE_X86_REXB_EXTENDS_OPREG RT_BIT_32(23) /*< REX.B extends the register field in the opcode byte /
83	#define DISOPTYPE_X86_MOD_FIXED_11 RT_BIT_32(24) /*< modrm.mod is always 11b /
84	#define DISOPTYPE_X86_FORCED_32_OP_SIZE_X86 RT_BIT_32(25) /*< Forced 32 bits operand size; regardless of prefix bytes (only in 16 & 32 bits mode!) /
85	#define DISOPTYPE_X86_AVX RT_BIT_32(28) /*< AVX,AVX2,++ instruction. Not implemented yet! /
86	#define DISOPTYPE_X86_SSE RT_BIT_32(29) /*< SSE,SSE2,SSE3,SSE4,++ instruction. Not implemented yet! /
87	#define DISOPTYPE_X86_MMX RT_BIT_32(30) /*< MMX,MMXExt,3DNow,++ instruction. Not implemented yet! /
88	#define DISOPTYPE_X86_FPU RT_BIT_32(31) /*< FPU instruction. Not implemented yet! /
89	#define DISOPTYPE_ALL UINT32_C(0xffffffff)
90	/** @} */
91
92
93	/**
94	* Opcode descriptor.
95	*/
96	#if !defined(DIS_CORE_ONLY) \|\| defined(DOXYGEN_RUNNING)
97	typedef struct DISOPCODE
98	{
99	# define DISOPCODE_FORMAT 0
100	/** Mnemonic and operand formatting. */
101	const char *pszOpcode;
102	/** Parameter \#1 parser index. */
103	uint8_t idxParse1;
104	/** Parameter \#2 parser index. */
105	uint8_t idxParse2;
106	/** Parameter \#3 parser index. */
107	uint8_t idxParse3;
108	/** Parameter \#4 parser index. */
109	uint8_t idxParse4;
110	/** The opcode identifier (enum OPCODESX86) - this is DIS specific.
111	* @see grp_dis_opcodes, VBox/disopcode-x86-amd64.h */
112	uint16_t uOpcode;
113	/** Parameter \#1 info, @see grp_dis_opparam. */
114	uint16_t fParam1;
115	/** Parameter \#2 info, @see grp_dis_opparam. */
116	uint16_t fParam2;
117	/** Parameter \#3 info, @see grp_dis_opparam. */
118	uint16_t fParam3;
119	/** Parameter \#4 info, @see grp_dis_opparam. */
120	uint16_t fParam4;
121	/** padding unused */
122	uint16_t uPadding;
123	/** Operand type flags, DISOPTYPE_XXX. */
124	uint32_t fOpType;
125	} DISOPCODE;
126	#else
127	# pragma pack(1)
128	typedef struct DISOPCODE
129	{
130	#if 1 /!defined(RT_ARCH_X86) && !defined(RT_ARCH_AMD64) - probably not worth it for ~4K, costs 2-3% speed. /
131	/* 16 bytes (trick is to make sure the bitfields doesn't cross dwords): */
132	# define DISOPCODE_FORMAT 16
133	uint32_t fOpType;
134	uint16_t uOpcode;
135	uint8_t idxParse1;
136	uint8_t idxParse2;
137	uint32_t fParam1 : 12; /* 1st dword: 12+12+8 = 0x20 (32) */
138	uint32_t fParam2 : 12;
139	uint32_t idxParse3 : 8;
140	uint32_t fParam3 : 12; /* 2nd dword: 12+12+8 = 0x20 (32) */
141	uint32_t fParam4 : 12;
142	uint32_t idxParse4 : 8;
143	#else /* 15 bytes: */
144	# define DISOPCODE_FORMAT 15
145	uint64_t uOpcode : 10; /* 1st qword: 10+12+12+12+6+6+6 = 0x40 (64) */
146	uint64_t idxParse1 : 6;
147	uint64_t idxParse2 : 6;
148	uint64_t idxParse3 : 6;
149	uint64_t fParam1 : 12;
150	uint64_t fParam2 : 12;
151	uint64_t fParam3 : 12;
152	uint32_t fOpType;
153	uint16_t fParam4;
154	uint8_t idxParse4;
155	#endif
156	} DISOPCODE;
157	# pragma pack()
158	AssertCompile(sizeof(DISOPCODE) == DISOPCODE_FORMAT);
159	#endif
160	AssertCompile(DISOPCODE_FORMAT != 15); /* Needs fixing before use as disopcode.h now has more than 1024 opcode values. */
161
162
163	/** @name Parameter usage flags.
164	* @{
165	*/
166	#define DISUSE_BASE RT_BIT_64(0)
167	#define DISUSE_INDEX RT_BIT_64(1)
168	#define DISUSE_SCALE RT_BIT_64(2)
169	#define DISUSE_REG_GEN8 RT_BIT_64(3)
170	#define DISUSE_REG_GEN16 RT_BIT_64(4)
171	#define DISUSE_REG_GEN32 RT_BIT_64(5)
172	#define DISUSE_REG_GEN64 RT_BIT_64(6)
173	#define DISUSE_REG_FP RT_BIT_64(7)
174	#define DISUSE_REG_MMX RT_BIT_64(8)
175	#define DISUSE_REG_XMM RT_BIT_64(9)
176	#define DISUSE_REG_YMM RT_BIT_64(10)
177	#define DISUSE_REG_CR RT_BIT_64(11)
178	#define DISUSE_REG_DBG RT_BIT_64(12)
179	#define DISUSE_REG_SEG RT_BIT_64(13)
180	#define DISUSE_REG_TEST RT_BIT_64(14)
181	#define DISUSE_DISPLACEMENT8 RT_BIT_64(15)
182	#define DISUSE_DISPLACEMENT16 RT_BIT_64(16)
183	#define DISUSE_DISPLACEMENT32 RT_BIT_64(17)
184	#define DISUSE_DISPLACEMENT64 RT_BIT_64(18)
185	#define DISUSE_RIPDISPLACEMENT32 RT_BIT_64(19)
186	#define DISUSE_IMMEDIATE8 RT_BIT_64(20)
187	#define DISUSE_IMMEDIATE8_REL RT_BIT_64(21)
188	#define DISUSE_IMMEDIATE16 RT_BIT_64(22)
189	#define DISUSE_IMMEDIATE16_REL RT_BIT_64(23)
190	#define DISUSE_IMMEDIATE32 RT_BIT_64(24)
191	#define DISUSE_IMMEDIATE32_REL RT_BIT_64(25)
192	#define DISUSE_IMMEDIATE64 RT_BIT_64(26)
193	#define DISUSE_IMMEDIATE64_REL RT_BIT_64(27)
194	#define DISUSE_IMMEDIATE_ADDR_0_32 RT_BIT_64(28)
195	#define DISUSE_IMMEDIATE_ADDR_16_32 RT_BIT_64(29)
196	#define DISUSE_IMMEDIATE_ADDR_0_16 RT_BIT_64(30)
197	#define DISUSE_IMMEDIATE_ADDR_16_16 RT_BIT_64(31)
198	/** DS:ESI */
199	#define DISUSE_POINTER_DS_BASED RT_BIT_64(32)
200	/** ES:EDI */
201	#define DISUSE_POINTER_ES_BASED RT_BIT_64(33)
202	#define DISUSE_IMMEDIATE16_SX8 RT_BIT_64(34)
203	#define DISUSE_IMMEDIATE32_SX8 RT_BIT_64(35)
204	#define DISUSE_IMMEDIATE64_SX8 RT_BIT_64(36)
205
206	/** Mask of immediate use flags. */
207	#define DISUSE_IMMEDIATE ( DISUSE_IMMEDIATE8 \
208	\| DISUSE_IMMEDIATE16 \
209	\| DISUSE_IMMEDIATE32 \
210	\| DISUSE_IMMEDIATE64 \
211	\| DISUSE_IMMEDIATE8_REL \
212	\| DISUSE_IMMEDIATE16_REL \
213	\| DISUSE_IMMEDIATE32_REL \
214	\| DISUSE_IMMEDIATE64_REL \
215	\| DISUSE_IMMEDIATE_ADDR_0_32 \
216	\| DISUSE_IMMEDIATE_ADDR_16_32 \
217	\| DISUSE_IMMEDIATE_ADDR_0_16 \
218	\| DISUSE_IMMEDIATE_ADDR_16_16 \
219	\| DISUSE_IMMEDIATE16_SX8 \
220	\| DISUSE_IMMEDIATE32_SX8 \
221	\| DISUSE_IMMEDIATE64_SX8)
222	/** Check if the use flags indicates an effective address. */
223	#define DISUSE_IS_EFFECTIVE_ADDR(a_fUseFlags) (!!( (a_fUseFlags) \
224	& ( DISUSE_BASE \
225	\| DISUSE_INDEX \
226	\| DISUSE_DISPLACEMENT32 \
227	\| DISUSE_DISPLACEMENT64 \
228	\| DISUSE_DISPLACEMENT16 \
229	\| DISUSE_DISPLACEMENT8 \
230	\| DISUSE_RIPDISPLACEMENT32) ))
231	/** @} */
232
233
234	/**
235	* Opcode parameter (operand) details.
236	*/
237	typedef struct DISOPPARAM
238	{
239	/** A combination of DISUSE_XXX. */
240	uint64_t fUse;
241	/** Immediate value or address, applicable if any of the flags included in
242	* DISUSE_IMMEDIATE are set in fUse. */
243	uint64_t uValue;
244
245	/** Architecture specific parameter state. */
246	RT_GCC_EXTENSION union
247	{
248	/** x86/AMD64 specific state. */
249	DIS_OP_PARAM_X86_T x86;
250	#if defined(VBOX_DIS_WITH_ARMV8)
251	/** ARMv8 specific state. */
252	DIS_OP_PARAM_ARMV8_T armv8;
253	#endif
254	};
255	} DISOPPARAM;
256	AssertCompileSize(DISOPPARAM, 32);
257	/** Pointer to opcode parameter. */
258	typedef const DISOPPARAM *PCDISOPPARAM;
259
260
261	/**
262	* Callback for reading instruction bytes.
263	*
264	* @returns VBox status code, bytes in DISSTATE::Instr::ab and byte count in
265	* DISSTATE::cbCachedInstr.
266	* @param pDis Pointer to the disassembler state. The user
267	* argument can be found in DISSTATE::pvUser if needed.
268	* @param offInstr The offset relative to the start of the instruction.
269	*
270	* To get the source address, add this to
271	* DISSTATE::uInstrAddr.
272	*
273	* To calculate the destination buffer address, use it
274	* as an index into DISSTATE::Instr::ab.
275	*
276	* @param cbMinRead The minimum number of bytes to read.
277	* @param cbMaxRead The maximum number of bytes that may be read.
278	*/
279	typedef DECLCALLBACKTYPE(int, FNDISREADBYTES,(PDISSTATE pDis, uint8_t offInstr, uint8_t cbMinRead, uint8_t cbMaxRead));
280	/** Pointer to a opcode byte reader. */
281	typedef FNDISREADBYTES *PFNDISREADBYTES;
282
283
284	/**
285	* The diassembler state and result.
286	*/
287	typedef struct DISSTATE
288	{
289	/** The different instruction views.
290	* @sa cbCachedInstr, FNDISREADBYTES */
291	union
292	{
293	/** Byte (8-bit) view.
294	* This is the one referred to by FNDISREADBYTES and cbCached. */
295	uint8_t ab[16];
296	/** Single 16-bit view. */
297	uint16_t u16;
298	/** Single 32-bit view. */
299	uint32_t u32;
300	/** 16-bit view. */
301	uint16_t au16[8];
302	/** 32-bit view. */
303	uint32_t au32[4];
304	/** 64-bit view. */
305	uint64_t au64[2];
306	} Instr;
307
308	/** Pointer to the current instruction. */
309	PCDISOPCODE pCurInstr;
310	#if ARCH_BITS == 32
311	uint32_t uPtrPadding2;
312	#endif
313
314	DISOPPARAM Param1;
315	DISOPPARAM Param2;
316	DISOPPARAM Param3;
317	DISOPPARAM Param4;
318
319	/** The number of valid bytes in DISSTATE::Instr. */
320	uint8_t cbCachedInstr;
321	/** The CPU mode (DISCPUMODE). */
322	uint8_t uCpuMode;
323	/** The instruction size. */
324	uint8_t cbInstr;
325	/** Unused bytes. */
326	uint8_t abUnused[1];
327
328	/** Return code set by a worker function like the opcode bytes readers. */
329	int32_t rc;
330	/** The address of the instruction. */
331	RTUINTPTR uInstrAddr;
332	/** Optional read function */
333	PFNDISREADBYTES pfnReadBytes;
334	#if ARCH_BITS == 32
335	uint32_t uPadding3;
336	#endif
337	/** User data supplied as an argument to the APIs. */
338	void *pvUser;
339	#if ARCH_BITS == 32
340	uint32_t uPadding4;
341	#endif
342
343	/** Architecture specific state. */
344	RT_GCC_EXTENSION union
345	{
346	/** x86/AMD64 specific state. */
347	DIS_STATE_X86_T x86;
348	#if defined(VBOX_DIS_WITH_ARMV8)
349	/** ARMv8 specific state. */
350	DIS_STATE_ARMV8_T armv8;
351	#endif
352	};
353	} DISSTATE;
354	AssertCompileMemberAlignment(DISSTATE, x86, 8);
355	AssertCompileSize(DISSTATE, 0xd8);
356
357
358
359	DISDECL(int) DISInstrToStr(void const *pvInstr, DISCPUMODE enmCpuMode,
360	PDISSTATE pDis, uint32_t pcbInstr, char pszOutput, size_t cbOutput);
361	DISDECL(int) DISInstrToStrWithReader(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, PFNDISREADBYTES pfnReadBytes, void *pvUser,
362	PDISSTATE pDis, uint32_t pcbInstr, char pszOutput, size_t cbOutput);
363	DISDECL(int) DISInstrToStrEx(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode,
364	PFNDISREADBYTES pfnReadBytes, void *pvUser, uint32_t uFilter,
365	PDISSTATE pDis, uint32_t pcbInstr, char pszOutput, size_t cbOutput);
366
367	DISDECL(int) DISInstr(void const pvInstr, DISCPUMODE enmCpuMode, PDISSTATE pDis, uint32_t pcbInstr);
368	DISDECL(int) DISInstrWithReader(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, PFNDISREADBYTES pfnReadBytes, void *pvUser,
369	PDISSTATE pDis, uint32_t *pcbInstr);
370	DISDECL(int) DISInstrEx(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, uint32_t uFilter,
371	PFNDISREADBYTES pfnReadBytes, void *pvUser,
372	PDISSTATE pDis, uint32_t *pcbInstr);
373	DISDECL(int) DISInstrWithPrefetchedBytes(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, uint32_t fFilter,
374	void const *pvPrefetched, size_t cbPretched,
375	PFNDISREADBYTES pfnReadBytes, void *pvUser,
376	PDISSTATE pDis, uint32_t *pcbInstr);
377
378	DISDECL(uint8_t) DISGetParamSize(PCDISSTATE pDis, PCDISOPPARAM pParam);
379	#if 0 /* unused */
380	DISDECL(DISSELREG) DISDetectSegReg(PCDISSTATE pDis, PCDISOPPARAM pParam);
381	DISDECL(uint8_t) DISQuerySegPrefixByte(PCDISSTATE pDis);
382	#endif
383
384	#if 0 /* Needs refactoring if we want to use this again, CPUMCTXCORE is history. */
385	/** @name Flags returned by DISQueryParamVal (DISQPVPARAMVAL::flags).
386	* @{
387	*/
388	#define DISQPV_FLAG_8 UINT8_C(0x01)
389	#define DISQPV_FLAG_16 UINT8_C(0x02)
390	#define DISQPV_FLAG_32 UINT8_C(0x04)
391	#define DISQPV_FLAG_64 UINT8_C(0x08)
392	#define DISQPV_FLAG_FARPTR16 UINT8_C(0x10)
393	#define DISQPV_FLAG_FARPTR32 UINT8_C(0x20)
394	/** @} */
395
396	/** @name Types returned by DISQueryParamVal (DISQPVPARAMVAL::flags).
397	* @{ */
398	#define DISQPV_TYPE_REGISTER UINT8_C(1)
399	#define DISQPV_TYPE_ADDRESS UINT8_C(2)
400	#define DISQPV_TYPE_IMMEDIATE UINT8_C(3)
401	/** @} */
402
403	typedef struct
404	{
405	union
406	{
407	uint8_t val8;
408	uint16_t val16;
409	uint32_t val32;
410	uint64_t val64;
411
412	int8_t i8;
413	int16_t i16;
414	int32_t i32;
415	int64_t i64;
416
417	struct
418	{
419	uint16_t sel;
420	uint32_t offset;
421	} farptr;
422	} val;
423
424	uint8_t type;
425	uint8_t size;
426	uint8_t flags;
427	} DISQPVPARAMVAL;
428	/** Pointer to opcode parameter value. */
429	typedef DISQPVPARAMVAL *PDISQPVPARAMVAL;
430
431	/** Indicates which parameter DISQueryParamVal should operate on. */
432	typedef enum DISQPVWHICH
433	{
434	DISQPVWHICH_DST = 1,
435	DISQPVWHICH_SRC,
436	DISQPVWHAT_32_BIT_HACK = 0x7fffffff
437	} DISQPVWHICH;
438	DISDECL(int) DISQueryParamVal(PCPUMCTXCORE pCtx, PCDISSTATE pDis, PCDISOPPARAM pParam, PDISQPVPARAMVAL pParamVal, DISQPVWHICH parmtype);
439	DISDECL(int) DISQueryParamRegPtr(PCPUMCTXCORE pCtx, PCDISSTATE pDis, PCDISOPPARAM pParam, void *ppReg, size_t pcbSize);
440
441	DISDECL(int) DISFetchReg8(PCCPUMCTXCORE pCtx, unsigned reg8, uint8_t *pVal);
442	DISDECL(int) DISFetchReg16(PCCPUMCTXCORE pCtx, unsigned reg16, uint16_t *pVal);
443	DISDECL(int) DISFetchReg32(PCCPUMCTXCORE pCtx, unsigned reg32, uint32_t *pVal);
444	DISDECL(int) DISFetchReg64(PCCPUMCTXCORE pCtx, unsigned reg64, uint64_t *pVal);
445	DISDECL(int) DISFetchRegSeg(PCCPUMCTXCORE pCtx, DISSELREG sel, RTSEL *pVal);
446	DISDECL(int) DISWriteReg8(PCPUMCTXCORE pRegFrame, unsigned reg8, uint8_t val8);
447	DISDECL(int) DISWriteReg16(PCPUMCTXCORE pRegFrame, unsigned reg32, uint16_t val16);
448	DISDECL(int) DISWriteReg32(PCPUMCTXCORE pRegFrame, unsigned reg32, uint32_t val32);
449	DISDECL(int) DISWriteReg64(PCPUMCTXCORE pRegFrame, unsigned reg64, uint64_t val64);
450	DISDECL(int) DISWriteRegSeg(PCPUMCTXCORE pCtx, DISSELREG sel, RTSEL val);
451	DISDECL(int) DISPtrReg8(PCPUMCTXCORE pCtx, unsigned reg8, uint8_t **ppReg);
452	DISDECL(int) DISPtrReg16(PCPUMCTXCORE pCtx, unsigned reg16, uint16_t **ppReg);
453	DISDECL(int) DISPtrReg32(PCPUMCTXCORE pCtx, unsigned reg32, uint32_t **ppReg);
454	DISDECL(int) DISPtrReg64(PCPUMCTXCORE pCtx, unsigned reg64, uint64_t **ppReg);
455	#endif /* obsolete */
456
457
458	/**
459	* Try resolve an address into a symbol name.
460	*
461	* For use with DISFormatYasmEx(), DISFormatMasmEx() and DISFormatGasEx().
462	*
463	* @returns VBox status code.
464	* @retval VINF_SUCCESS on success, pszBuf contains the full symbol name.
465	* @retval VINF_BUFFER_OVERFLOW if pszBuf is too small the symbol name. The
466	* content of pszBuf is truncated and zero terminated.
467	* @retval VERR_SYMBOL_NOT_FOUND if no matching symbol was found for the address.
468	*
469	* @param pDis Pointer to the disassembler CPU state.
470	* @param u32Sel The selector value. Use DIS_FMT_SEL_IS_REG, DIS_FMT_SEL_GET_VALUE,
471	* DIS_FMT_SEL_GET_REG to access this.
472	* @param uAddress The segment address.
473	* @param pszBuf Where to store the symbol name
474	* @param cchBuf The size of the buffer.
475	* @param poff If not a perfect match, then this is where the offset from the return
476	* symbol to the specified address is returned.
477	* @param pvUser The user argument.
478	*/
479	typedef DECLCALLBACKTYPE(int, FNDISGETSYMBOL,(PCDISSTATE pDis, uint32_t u32Sel, RTUINTPTR uAddress, char *pszBuf, size_t cchBuf,
480	RTINTPTR poff, void pvUser));
481	/** Pointer to a FNDISGETSYMBOL(). */
482	typedef FNDISGETSYMBOL *PFNDISGETSYMBOL;
483
484	/**
485	* Checks if the FNDISGETSYMBOL argument u32Sel is a register or not.
486	*/
487	#define DIS_FMT_SEL_IS_REG(u32Sel) ( !!((u32Sel) & RT_BIT(31)) )
488
489	/**
490	* Extracts the selector value from the FNDISGETSYMBOL argument u32Sel.
491	* @returns Selector value.
492	*/
493	#define DIS_FMT_SEL_GET_VALUE(u32Sel) ( (RTSEL)(u32Sel) )
494
495	/**
496	* Extracts the register number from the FNDISGETSYMBOL argument u32Sel.
497	* @returns USE_REG_CS, USE_REG_SS, USE_REG_DS, USE_REG_ES, USE_REG_FS or USE_REG_FS.
498	*/
499	#define DIS_FMT_SEL_GET_REG(u32Sel) ( ((u32Sel) >> 16) & 0xf )
500
501	/** @internal */
502	#define DIS_FMT_SEL_FROM_REG(uReg) ( ((uReg) << 16) \| RT_BIT(31) \| 0xffff )
503	/** @internal */
504	#define DIS_FMT_SEL_FROM_VALUE(Sel) ( (Sel) & 0xffff )
505
506
507	/** @name Flags for use with DISFormatYasmEx(), DISFormatMasmEx(),
508	* DISFormatGasEx() and DISFormatArmV8Ex().
509	* @{
510	*/
511	/** Put the address to the right. */
512	#define DIS_FMT_FLAGS_ADDR_RIGHT RT_BIT_32(0)
513	/** Put the address to the left. */
514	#define DIS_FMT_FLAGS_ADDR_LEFT RT_BIT_32(1)
515	/** Put the address in comments.
516	* For some assemblers this implies placing it to the right. */
517	#define DIS_FMT_FLAGS_ADDR_COMMENT RT_BIT_32(2)
518	/** Put the instruction bytes to the right of the disassembly. */
519	#define DIS_FMT_FLAGS_BYTES_RIGHT RT_BIT_32(3)
520	/** Put the instruction bytes to the left of the disassembly. */
521	#define DIS_FMT_FLAGS_BYTES_LEFT RT_BIT_32(4)
522	/** Put the instruction bytes in comments.
523	* For some assemblers this implies placing the bytes to the right. */
524	#define DIS_FMT_FLAGS_BYTES_COMMENT RT_BIT_32(5)
525	/** Put the bytes in square brackets. */
526	#define DIS_FMT_FLAGS_BYTES_BRACKETS RT_BIT_32(6)
527	/** Put spaces between the bytes. */
528	#define DIS_FMT_FLAGS_BYTES_SPACED RT_BIT_32(7)
529	/** Gives the width (in opcode bytes) of the opcode bytes area if on the left
530	* side. If zero, then a default of 7 will be used. */
531	#define DIS_FMT_FLAGS_BYTES_WIDTH_MASK UINT32_C(0x00001f00)
532	/** Shift count of the bytes width field. */
533	#define DIS_FMT_FLAGS_BYTES_WIDTH_SHIFT 8
534	/** Helper that makes shift the width count. */
535	#define DIS_FMT_FLAGS_BYTES_WIDTH_MAKE(a_cb) ((uint32_t)(a_cb) << DIS_FMT_FLAGS_BYTES_WIDTH_SHIFT)
536	/** Display the relative +/- offset of branch instructions that uses relative addresses,
537	* and put the target address in parenthesis. */
538	#define DIS_FMT_FLAGS_RELATIVE_BRANCH RT_BIT_32(13)
539	/** Strict assembly. The assembly should, when ever possible, make the
540	* assembler reproduce the exact same binary. (Refers to the yasm
541	* strict keyword.) */
542	#define DIS_FMT_FLAGS_STRICT RT_BIT_32(14)
543	/** C-style hex formatting (0x01), rather than assembly style (001h). */
544	#define DIS_FMT_FLAGS_C_HEX RT_BIT_32(15)
545
546	/** Checks if the given flags are a valid combination. */
547	#define DIS_FMT_FLAGS_IS_VALID(fFlags) \
548	( !((fFlags) & ~UINT32_C(0x0000ffff)) \
549	&& ((fFlags) & (DIS_FMT_FLAGS_ADDR_RIGHT \| DIS_FMT_FLAGS_ADDR_LEFT)) != (DIS_FMT_FLAGS_ADDR_RIGHT \| DIS_FMT_FLAGS_ADDR_LEFT) \
550	&& ( !((fFlags) & DIS_FMT_FLAGS_ADDR_COMMENT) \
551	\|\| (fFlags & (DIS_FMT_FLAGS_ADDR_RIGHT \| DIS_FMT_FLAGS_ADDR_LEFT)) ) \
552	&& ((fFlags) & (DIS_FMT_FLAGS_BYTES_RIGHT \| DIS_FMT_FLAGS_BYTES_LEFT)) != (DIS_FMT_FLAGS_BYTES_RIGHT \| DIS_FMT_FLAGS_BYTES_LEFT) \
553	&& ( !((fFlags) & (DIS_FMT_FLAGS_BYTES_COMMENT \| DIS_FMT_FLAGS_BYTES_BRACKETS)) \
554	\|\| (fFlags & (DIS_FMT_FLAGS_BYTES_RIGHT \| DIS_FMT_FLAGS_BYTES_LEFT)) ) \
555	)
556	/** @} */
557
558	DISDECL(size_t) DISFormatYasm( PCDISSTATE pDis, char *pszBuf, size_t cchBuf);
559	DISDECL(size_t) DISFormatYasmEx(PCDISSTATE pDis, char pszBuf, size_t cchBuf, uint32_t fFlags, PFNDISGETSYMBOL pfnGetSymbol, void pvUser);
560	DISDECL(size_t) DISFormatMasm( PCDISSTATE pDis, char *pszBuf, size_t cchBuf);
561	DISDECL(size_t) DISFormatMasmEx(PCDISSTATE pDis, char pszBuf, size_t cchBuf, uint32_t fFlags, PFNDISGETSYMBOL pfnGetSymbol, void pvUser);
562	DISDECL(size_t) DISFormatGas( PCDISSTATE pDis, char *pszBuf, size_t cchBuf);
563	DISDECL(size_t) DISFormatGasEx( PCDISSTATE pDis, char pszBuf, size_t cchBuf, uint32_t fFlags, PFNDISGETSYMBOL pfnGetSymbol, void pvUser);
564
565	DISDECL(size_t) DISFormatArmV8( PCDISSTATE pDis, char *pszBuf, size_t cchBuf);
566	DISDECL(size_t) DISFormatArmV8Ex(PCDISSTATE pDis, char pszBuf, size_t cchBuf, uint32_t fFlags, PFNDISGETSYMBOL pfnGetSymbol, void pvUser);
567
568	/** @todo DISAnnotate(PCDISSTATE pDis, char *pszBuf, size_t cchBuf, register
569	* reader, memory reader); */
570
571	/** @} */
572
573	RT_C_DECLS_END
574
575	#endif /* !VBOX_INCLUDED_dis_h */
576

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source: vbox/trunk/include/VBox/dis.h@ 101656

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