dis.h@ 82968

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1	/** @file
2	* DIS - The VirtualBox Disassembler.
3	*/
4
5	/*
6	* Copyright (C) 2006-2020 Oracle Corporation
7	*
8	* This file is part of VirtualBox Open Source Edition (OSE), as
9	* available from http://www.virtualbox.org. This file is free software;
10	* you can redistribute it and/or modify it under the terms of the GNU
11	* General Public License (GPL) as published by the Free Software
12	* Foundation, in version 2 as it comes in the "COPYING" file of the
13	* VirtualBox OSE distribution. VirtualBox OSE is distributed in the
14	* hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
15	*
16	* The contents of this file may alternatively be used under the terms
17	* of the Common Development and Distribution License Version 1.0
18	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
19	* VirtualBox OSE distribution, in which case the provisions of the
20	* CDDL are applicable instead of those of the GPL.
21	*
22	* You may elect to license modified versions of this file under the
23	* terms and conditions of either the GPL or the CDDL or both.
24	*/
25
26	#ifndef VBOX_INCLUDED_dis_h
27	#define VBOX_INCLUDED_dis_h
28	#ifndef RT_WITHOUT_PRAGMA_ONCE
29	# pragma once
30	#endif
31
32	#include <VBox/types.h>
33	#include <VBox/disopcode.h>
34	#include <iprt/assert.h>
35
36
37	RT_C_DECLS_BEGIN
38
39	/** @defgroup grp_dis VBox Disassembler
40	* @{ */
41
42	/** @name Prefix byte flags (DISSTATE::fPrefix).
43	* @{
44	*/
45	#define DISPREFIX_NONE UINT8_C(0x00)
46	/** non-default address size. */
47	#define DISPREFIX_ADDRSIZE UINT8_C(0x01)
48	/** non-default operand size. */
49	#define DISPREFIX_OPSIZE UINT8_C(0x02)
50	/** lock prefix. */
51	#define DISPREFIX_LOCK UINT8_C(0x04)
52	/** segment prefix. */
53	#define DISPREFIX_SEG UINT8_C(0x08)
54	/** rep(e) prefix (not a prefix, but we'll treat is as one). */
55	#define DISPREFIX_REP UINT8_C(0x10)
56	/** rep(e) prefix (not a prefix, but we'll treat is as one). */
57	#define DISPREFIX_REPNE UINT8_C(0x20)
58	/** REX prefix (64 bits) */
59	#define DISPREFIX_REX UINT8_C(0x40)
60	/** @} */
61
62	/** @name VEX.Lvvvv prefix destination register flag.
63	* @{
64	*/
65	#define VEX_LEN256 UINT8_C(0x01)
66	#define VEXREG_IS256B(x) ((x) & VEX_LEN256)
67	/* Convert second byte of VEX prefix to internal format */
68	#define VEX_2B2INT(x) ((((x) >> 2) & 0x1f))
69	#define VEX_HAS_REX_R(x) (!((x) & 0x80))
70
71	#define DISPREFIX_VEX_FLAG_W UINT8_C(0x01)
72	/** @} */
73
74	/** @name 64 bits prefix byte flags (DISSTATE::fRexPrefix).
75	* Requires VBox/disopcode.h.
76	* @{
77	*/
78	#define DISPREFIX_REX_OP_2_FLAGS(a) (a - OP_PARM_REX_START)
79	/#define DISPREFIX_REX_FLAGS DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX) - 0, which is no flag /
80	#define DISPREFIX_REX_FLAGS_B DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_B)
81	#define DISPREFIX_REX_FLAGS_X DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_X)
82	#define DISPREFIX_REX_FLAGS_XB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_XB)
83	#define DISPREFIX_REX_FLAGS_R DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_R)
84	#define DISPREFIX_REX_FLAGS_RB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_RB)
85	#define DISPREFIX_REX_FLAGS_RX DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_RX)
86	#define DISPREFIX_REX_FLAGS_RXB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_RXB)
87	#define DISPREFIX_REX_FLAGS_W DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_W)
88	#define DISPREFIX_REX_FLAGS_WB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WB)
89	#define DISPREFIX_REX_FLAGS_WX DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WX)
90	#define DISPREFIX_REX_FLAGS_WXB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WXB)
91	#define DISPREFIX_REX_FLAGS_WR DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WR)
92	#define DISPREFIX_REX_FLAGS_WRB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WRB)
93	#define DISPREFIX_REX_FLAGS_WRX DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WRX)
94	#define DISPREFIX_REX_FLAGS_WRXB DISPREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WRXB)
95	/** @} */
96	AssertCompile(RT_IS_POWER_OF_TWO(DISPREFIX_REX_FLAGS_B));
97	AssertCompile(RT_IS_POWER_OF_TWO(DISPREFIX_REX_FLAGS_X));
98	AssertCompile(RT_IS_POWER_OF_TWO(DISPREFIX_REX_FLAGS_W));
99	AssertCompile(RT_IS_POWER_OF_TWO(DISPREFIX_REX_FLAGS_R));
100
101	/** @name Operand type (DISOPCODE::fOpType).
102	* @{
103	*/
104	#define DISOPTYPE_INVALID RT_BIT_32(0)
105	#define DISOPTYPE_HARMLESS RT_BIT_32(1)
106	#define DISOPTYPE_CONTROLFLOW RT_BIT_32(2)
107	#define DISOPTYPE_POTENTIALLY_DANGEROUS RT_BIT_32(3)
108	#define DISOPTYPE_DANGEROUS RT_BIT_32(4)
109	#define DISOPTYPE_PORTIO RT_BIT_32(5)
110	#define DISOPTYPE_PRIVILEGED RT_BIT_32(6)
111	#define DISOPTYPE_PRIVILEGED_NOTRAP RT_BIT_32(7)
112	#define DISOPTYPE_UNCOND_CONTROLFLOW RT_BIT_32(8)
113	#define DISOPTYPE_RELATIVE_CONTROLFLOW RT_BIT_32(9)
114	#define DISOPTYPE_COND_CONTROLFLOW RT_BIT_32(10)
115	#define DISOPTYPE_INTERRUPT RT_BIT_32(11)
116	#define DISOPTYPE_ILLEGAL RT_BIT_32(12)
117	#define DISOPTYPE_RRM_DANGEROUS RT_BIT_32(14) /*< Some additional dangerous ones when recompiling raw r0. /
118	#define DISOPTYPE_RRM_DANGEROUS_16 RT_BIT_32(15) /*< Some additional dangerous ones when recompiling 16-bit raw r0. /
119	#define DISOPTYPE_RRM_MASK (DISOPTYPE_RRM_DANGEROUS \| DISOPTYPE_RRM_DANGEROUS_16)
120	#define DISOPTYPE_INHIBIT_IRQS RT_BIT_32(16) /*< Will or can inhibit irqs (sti, pop ss, mov ss) /
121	#define DISOPTYPE_PORTIO_READ RT_BIT_32(17)
122	#define DISOPTYPE_PORTIO_WRITE RT_BIT_32(18)
123	#define DISOPTYPE_INVALID_64 RT_BIT_32(19) /*< Invalid in 64 bits mode /
124	#define DISOPTYPE_ONLY_64 RT_BIT_32(20) /*< Only valid in 64 bits mode /
125	#define DISOPTYPE_DEFAULT_64_OP_SIZE RT_BIT_32(21) /*< Default 64 bits operand size /
126	#define DISOPTYPE_FORCED_64_OP_SIZE RT_BIT_32(22) /*< Forced 64 bits operand size; regardless of prefix bytes /
127	#define DISOPTYPE_REXB_EXTENDS_OPREG RT_BIT_32(23) /*< REX.B extends the register field in the opcode byte /
128	#define DISOPTYPE_MOD_FIXED_11 RT_BIT_32(24) /*< modrm.mod is always 11b /
129	#define DISOPTYPE_FORCED_32_OP_SIZE_X86 RT_BIT_32(25) /*< Forced 32 bits operand size; regardless of prefix bytes (only in 16 & 32 bits mode!) /
130	#define DISOPTYPE_SSE RT_BIT_32(29) /*< SSE,SSE2,SSE3,AVX,++ instruction. Not implemented yet! /
131	#define DISOPTYPE_MMX RT_BIT_32(30) /*< MMX,MMXExt,3DNow,++ instruction. Not implemented yet! /
132	#define DISOPTYPE_FPU RT_BIT_32(31) /*< FPU instruction. Not implemented yet! /
133	#define DISOPTYPE_ALL UINT32_C(0xffffffff)
134	/** @} */
135
136	/** @name Parameter usage flags.
137	* @{
138	*/
139	#define DISUSE_BASE RT_BIT_64(0)
140	#define DISUSE_INDEX RT_BIT_64(1)
141	#define DISUSE_SCALE RT_BIT_64(2)
142	#define DISUSE_REG_GEN8 RT_BIT_64(3)
143	#define DISUSE_REG_GEN16 RT_BIT_64(4)
144	#define DISUSE_REG_GEN32 RT_BIT_64(5)
145	#define DISUSE_REG_GEN64 RT_BIT_64(6)
146	#define DISUSE_REG_FP RT_BIT_64(7)
147	#define DISUSE_REG_MMX RT_BIT_64(8)
148	#define DISUSE_REG_XMM RT_BIT_64(9)
149	#define DISUSE_REG_YMM RT_BIT_64(10)
150	#define DISUSE_REG_CR RT_BIT_64(11)
151	#define DISUSE_REG_DBG RT_BIT_64(12)
152	#define DISUSE_REG_SEG RT_BIT_64(13)
153	#define DISUSE_REG_TEST RT_BIT_64(14)
154	#define DISUSE_DISPLACEMENT8 RT_BIT_64(15)
155	#define DISUSE_DISPLACEMENT16 RT_BIT_64(16)
156	#define DISUSE_DISPLACEMENT32 RT_BIT_64(17)
157	#define DISUSE_DISPLACEMENT64 RT_BIT_64(18)
158	#define DISUSE_RIPDISPLACEMENT32 RT_BIT_64(19)
159	#define DISUSE_IMMEDIATE8 RT_BIT_64(20)
160	#define DISUSE_IMMEDIATE8_REL RT_BIT_64(21)
161	#define DISUSE_IMMEDIATE16 RT_BIT_64(22)
162	#define DISUSE_IMMEDIATE16_REL RT_BIT_64(23)
163	#define DISUSE_IMMEDIATE32 RT_BIT_64(24)
164	#define DISUSE_IMMEDIATE32_REL RT_BIT_64(25)
165	#define DISUSE_IMMEDIATE64 RT_BIT_64(26)
166	#define DISUSE_IMMEDIATE64_REL RT_BIT_64(27)
167	#define DISUSE_IMMEDIATE_ADDR_0_32 RT_BIT_64(28)
168	#define DISUSE_IMMEDIATE_ADDR_16_32 RT_BIT_64(29)
169	#define DISUSE_IMMEDIATE_ADDR_0_16 RT_BIT_64(30)
170	#define DISUSE_IMMEDIATE_ADDR_16_16 RT_BIT_64(31)
171	/** DS:ESI */
172	#define DISUSE_POINTER_DS_BASED RT_BIT_64(32)
173	/** ES:EDI */
174	#define DISUSE_POINTER_ES_BASED RT_BIT_64(33)
175	#define DISUSE_IMMEDIATE16_SX8 RT_BIT_64(34)
176	#define DISUSE_IMMEDIATE32_SX8 RT_BIT_64(35)
177	#define DISUSE_IMMEDIATE64_SX8 RT_BIT_64(36)
178
179	/** Mask of immediate use flags. */
180	#define DISUSE_IMMEDIATE ( DISUSE_IMMEDIATE8 \
181	\| DISUSE_IMMEDIATE16 \
182	\| DISUSE_IMMEDIATE32 \
183	\| DISUSE_IMMEDIATE64 \
184	\| DISUSE_IMMEDIATE8_REL \
185	\| DISUSE_IMMEDIATE16_REL \
186	\| DISUSE_IMMEDIATE32_REL \
187	\| DISUSE_IMMEDIATE64_REL \
188	\| DISUSE_IMMEDIATE_ADDR_0_32 \
189	\| DISUSE_IMMEDIATE_ADDR_16_32 \
190	\| DISUSE_IMMEDIATE_ADDR_0_16 \
191	\| DISUSE_IMMEDIATE_ADDR_16_16 \
192	\| DISUSE_IMMEDIATE16_SX8 \
193	\| DISUSE_IMMEDIATE32_SX8 \
194	\| DISUSE_IMMEDIATE64_SX8)
195	/** Check if the use flags indicates an effective address. */
196	#define DISUSE_IS_EFFECTIVE_ADDR(a_fUseFlags) (!!( (a_fUseFlags) \
197	& ( DISUSE_BASE \
198	\| DISUSE_INDEX \
199	\| DISUSE_DISPLACEMENT32 \
200	\| DISUSE_DISPLACEMENT64 \
201	\| DISUSE_DISPLACEMENT16 \
202	\| DISUSE_DISPLACEMENT8 \
203	\| DISUSE_RIPDISPLACEMENT32) ))
204	/** @} */
205
206	/** @name 64-bit general register indexes.
207	* This matches the AMD64 register encoding. It is found used in
208	* DISOPPARAM::Base.idxGenReg and DISOPPARAM::Index.idxGenReg.
209	* @note Safe to assume same values as the 16-bit and 32-bit general registers.
210	* @{
211	*/
212	#define DISGREG_RAX UINT8_C(0)
213	#define DISGREG_RCX UINT8_C(1)
214	#define DISGREG_RDX UINT8_C(2)
215	#define DISGREG_RBX UINT8_C(3)
216	#define DISGREG_RSP UINT8_C(4)
217	#define DISGREG_RBP UINT8_C(5)
218	#define DISGREG_RSI UINT8_C(6)
219	#define DISGREG_RDI UINT8_C(7)
220	#define DISGREG_R8 UINT8_C(8)
221	#define DISGREG_R9 UINT8_C(9)
222	#define DISGREG_R10 UINT8_C(10)
223	#define DISGREG_R11 UINT8_C(11)
224	#define DISGREG_R12 UINT8_C(12)
225	#define DISGREG_R13 UINT8_C(13)
226	#define DISGREG_R14 UINT8_C(14)
227	#define DISGREG_R15 UINT8_C(15)
228	/** @} */
229
230	/** @name 32-bit general register indexes.
231	* This matches the AMD64 register encoding. It is found used in
232	* DISOPPARAM::Base.idxGenReg and DISOPPARAM::Index.idxGenReg.
233	* @note Safe to assume same values as the 16-bit and 64-bit general registers.
234	* @{
235	*/
236	#define DISGREG_EAX UINT8_C(0)
237	#define DISGREG_ECX UINT8_C(1)
238	#define DISGREG_EDX UINT8_C(2)
239	#define DISGREG_EBX UINT8_C(3)
240	#define DISGREG_ESP UINT8_C(4)
241	#define DISGREG_EBP UINT8_C(5)
242	#define DISGREG_ESI UINT8_C(6)
243	#define DISGREG_EDI UINT8_C(7)
244	#define DISGREG_R8D UINT8_C(8)
245	#define DISGREG_R9D UINT8_C(9)
246	#define DISGREG_R10D UINT8_C(10)
247	#define DISGREG_R11D UINT8_C(11)
248	#define DISGREG_R12D UINT8_C(12)
249	#define DISGREG_R13D UINT8_C(13)
250	#define DISGREG_R14D UINT8_C(14)
251	#define DISGREG_R15D UINT8_C(15)
252	/** @} */
253
254	/** @name 16-bit general register indexes.
255	* This matches the AMD64 register encoding. It is found used in
256	* DISOPPARAM::Base.idxGenReg and DISOPPARAM::Index.idxGenReg.
257	* @note Safe to assume same values as the 32-bit and 64-bit general registers.
258	* @{
259	*/
260	#define DISGREG_AX UINT8_C(0)
261	#define DISGREG_CX UINT8_C(1)
262	#define DISGREG_DX UINT8_C(2)
263	#define DISGREG_BX UINT8_C(3)
264	#define DISGREG_SP UINT8_C(4)
265	#define DISGREG_BP UINT8_C(5)
266	#define DISGREG_SI UINT8_C(6)
267	#define DISGREG_DI UINT8_C(7)
268	#define DISGREG_R8W UINT8_C(8)
269	#define DISGREG_R9W UINT8_C(9)
270	#define DISGREG_R10W UINT8_C(10)
271	#define DISGREG_R11W UINT8_C(11)
272	#define DISGREG_R12W UINT8_C(12)
273	#define DISGREG_R13W UINT8_C(13)
274	#define DISGREG_R14W UINT8_C(14)
275	#define DISGREG_R15W UINT8_C(15)
276	/** @} */
277
278	/** @name 8-bit general register indexes.
279	* This mostly (?) matches the AMD64 register encoding. It is found used in
280	* DISOPPARAM::Base.idxGenReg and DISOPPARAM::Index.idxGenReg.
281	* @{
282	*/
283	#define DISGREG_AL UINT8_C(0)
284	#define DISGREG_CL UINT8_C(1)
285	#define DISGREG_DL UINT8_C(2)
286	#define DISGREG_BL UINT8_C(3)
287	#define DISGREG_AH UINT8_C(4)
288	#define DISGREG_CH UINT8_C(5)
289	#define DISGREG_DH UINT8_C(6)
290	#define DISGREG_BH UINT8_C(7)
291	#define DISGREG_R8B UINT8_C(8)
292	#define DISGREG_R9B UINT8_C(9)
293	#define DISGREG_R10B UINT8_C(10)
294	#define DISGREG_R11B UINT8_C(11)
295	#define DISGREG_R12B UINT8_C(12)
296	#define DISGREG_R13B UINT8_C(13)
297	#define DISGREG_R14B UINT8_C(14)
298	#define DISGREG_R15B UINT8_C(15)
299	#define DISGREG_SPL UINT8_C(16)
300	#define DISGREG_BPL UINT8_C(17)
301	#define DISGREG_SIL UINT8_C(18)
302	#define DISGREG_DIL UINT8_C(19)
303	/** @} */
304
305	/** @name Segment registerindexes.
306	* This matches the AMD64 register encoding. It is found used in
307	* DISOPPARAM::Base.idxSegReg.
308	* @{
309	*/
310	typedef enum
311	{
312	DISSELREG_ES = 0,
313	DISSELREG_CS = 1,
314	DISSELREG_SS = 2,
315	DISSELREG_DS = 3,
316	DISSELREG_FS = 4,
317	DISSELREG_GS = 5,
318	/** End of the valid register index values. */
319	DISSELREG_END,
320	/** The usual 32-bit paranoia. */
321	DIS_SEGREG_32BIT_HACK = 0x7fffffff
322	} DISSELREG;
323	/** @} */
324
325	/** @name FPU register indexes.
326	* This matches the AMD64 register encoding. It is found used in
327	* DISOPPARAM::Base.idxFpuReg.
328	* @{
329	*/
330	#define DISFPREG_ST0 UINT8_C(0)
331	#define DISFPREG_ST1 UINT8_C(1)
332	#define DISFPREG_ST2 UINT8_C(2)
333	#define DISFPREG_ST3 UINT8_C(3)
334	#define DISFPREG_ST4 UINT8_C(4)
335	#define DISFPREG_ST5 UINT8_C(5)
336	#define DISFPREG_ST6 UINT8_C(6)
337	#define DISFPREG_ST7 UINT8_C(7)
338	/** @} */
339
340	/** @name Control register indexes.
341	* This matches the AMD64 register encoding. It is found used in
342	* DISOPPARAM::Base.idxCtrlReg.
343	* @{
344	*/
345	#define DISCREG_CR0 UINT8_C(0)
346	#define DISCREG_CR1 UINT8_C(1)
347	#define DISCREG_CR2 UINT8_C(2)
348	#define DISCREG_CR3 UINT8_C(3)
349	#define DISCREG_CR4 UINT8_C(4)
350	#define DISCREG_CR8 UINT8_C(8)
351	/** @} */
352
353	/** @name Debug register indexes.
354	* This matches the AMD64 register encoding. It is found used in
355	* DISOPPARAM::Base.idxDbgReg.
356	* @{
357	*/
358	#define DISDREG_DR0 UINT8_C(0)
359	#define DISDREG_DR1 UINT8_C(1)
360	#define DISDREG_DR2 UINT8_C(2)
361	#define DISDREG_DR3 UINT8_C(3)
362	#define DISDREG_DR4 UINT8_C(4)
363	#define DISDREG_DR5 UINT8_C(5)
364	#define DISDREG_DR6 UINT8_C(6)
365	#define DISDREG_DR7 UINT8_C(7)
366	/** @} */
367
368	/** @name MMX register indexes.
369	* This matches the AMD64 register encoding. It is found used in
370	* DISOPPARAM::Base.idxMmxReg.
371	* @{
372	*/
373	#define DISMREG_MMX0 UINT8_C(0)
374	#define DISMREG_MMX1 UINT8_C(1)
375	#define DISMREG_MMX2 UINT8_C(2)
376	#define DISMREG_MMX3 UINT8_C(3)
377	#define DISMREG_MMX4 UINT8_C(4)
378	#define DISMREG_MMX5 UINT8_C(5)
379	#define DISMREG_MMX6 UINT8_C(6)
380	#define DISMREG_MMX7 UINT8_C(7)
381	/** @} */
382
383	/** @name SSE register indexes.
384	* This matches the AMD64 register encoding. It is found used in
385	* DISOPPARAM::Base.idxXmmReg.
386	* @{
387	*/
388	#define DISXREG_XMM0 UINT8_C(0)
389	#define DISXREG_XMM1 UINT8_C(1)
390	#define DISXREG_XMM2 UINT8_C(2)
391	#define DISXREG_XMM3 UINT8_C(3)
392	#define DISXREG_XMM4 UINT8_C(4)
393	#define DISXREG_XMM5 UINT8_C(5)
394	#define DISXREG_XMM6 UINT8_C(6)
395	#define DISXREG_XMM7 UINT8_C(7)
396	/** @} */
397
398
399	/**
400	* Opcode parameter (operand) details.
401	*/
402	typedef struct DISOPPARAM
403	{
404	/** A combination of DISUSE_XXX. */
405	uint64_t fUse;
406	/** Immediate value or address, applicable if any of the flags included in
407	* DISUSE_IMMEDIATE are set in fUse. */
408	uint64_t uValue;
409	/** Disposition. */
410	union
411	{
412	/** 64-bit displacement, applicable if DISUSE_DISPLACEMENT64 is set in fUse. */
413	int64_t i64;
414	uint64_t u64;
415	/** 32-bit displacement, applicable if DISUSE_DISPLACEMENT32 or
416	* DISUSE_RIPDISPLACEMENT32 is set in fUse. */
417	int32_t i32;
418	uint32_t u32;
419	/** 16-bit displacement, applicable if DISUSE_DISPLACEMENT16 is set in fUse. */
420	int32_t i16;
421	uint32_t u16;
422	/** 8-bit displacement, applicable if DISUSE_DISPLACEMENT8 is set in fUse. */
423	int32_t i8;
424	uint32_t u8;
425	} uDisp;
426	/** The base register from ModR/M or SIB, applicable if DISUSE_BASE is
427	* set in fUse. */
428	union
429	{
430	/** General register index (DISGREG_XXX), applicable if DISUSE_REG_GEN8,
431	* DISUSE_REG_GEN16, DISUSE_REG_GEN32 or DISUSE_REG_GEN64 is set in fUse. */
432	uint8_t idxGenReg;
433	/** FPU stack register index (DISFPREG_XXX), applicable if DISUSE_REG_FP is
434	* set in fUse. 1:1 indexes. */
435	uint8_t idxFpuReg;
436	/** MMX register index (DISMREG_XXX), applicable if DISUSE_REG_MMX is
437	* set in fUse. 1:1 indexes. */
438	uint8_t idxMmxReg;
439	/** SSE register index (DISXREG_XXX), applicable if DISUSE_REG_XMM is
440	* set in fUse. 1:1 indexes. */
441	uint8_t idxXmmReg;
442	/** SSE2 register index (DISYREG_XXX), applicable if DISUSE_REG_YMM is
443	* set in fUse. 1:1 indexes. */
444	uint8_t idxYmmReg;
445	/** Segment register index (DISSELREG_XXX), applicable if DISUSE_REG_SEG is
446	* set in fUse. */
447	uint8_t idxSegReg;
448	/** Test register, TR0-TR7, present on early IA32 CPUs, applicable if
449	* DISUSE_REG_TEST is set in fUse. No index defines for these. */
450	uint8_t idxTestReg;
451	/** Control register index (DISCREG_XXX), applicable if DISUSE_REG_CR is
452	* set in fUse. 1:1 indexes. */
453	uint8_t idxCtrlReg;
454	/** Debug register index (DISDREG_XXX), applicable if DISUSE_REG_DBG is
455	* set in fUse. 1:1 indexes. */
456	uint8_t idxDbgReg;
457	} Base;
458	/** The SIB index register meaning, applicable if DISUSE_INDEX is
459	* set in fUse. */
460	union
461	{
462	/** General register index (DISGREG_XXX), applicable if DISUSE_REG_GEN8,
463	* DISUSE_REG_GEN16, DISUSE_REG_GEN32 or DISUSE_REG_GEN64 is set in fUse. */
464	uint8_t idxGenReg;
465	/** XMM register index (DISXREG_XXX), applicable if DISUSE_REG_XMM
466	* is set in fUse. */
467	uint8_t idxXmmReg;
468	/** YMM register index (DISXREG_XXX), applicable if DISUSE_REG_YMM
469	* is set in fUse. */
470	uint8_t idxYmmReg;
471	} Index;
472	/** 2, 4 or 8, if DISUSE_SCALE is set in fUse. */
473	uint8_t uScale;
474	/** Parameter size. */
475	uint8_t cb;
476	/** Copy of the corresponding DISOPCODE::fParam1 / DISOPCODE::fParam2 /
477	* DISOPCODE::fParam3. */
478	uint32_t fParam;
479	} DISOPPARAM;
480	AssertCompileSize(DISOPPARAM, 32);
481	/** Pointer to opcode parameter. */
482	typedef DISOPPARAM *PDISOPPARAM;
483	/** Pointer to opcode parameter. */
484	typedef const DISOPPARAM *PCDISOPPARAM;
485
486
487	/**
488	* Opcode descriptor.
489	*/
490	typedef struct DISOPCODE
491	{
492	#ifndef DIS_CORE_ONLY
493	const char *pszOpcode;
494	#endif
495	/** Parameter \#1 parser index. */
496	uint8_t idxParse1;
497	/** Parameter \#2 parser index. */
498	uint8_t idxParse2;
499	/** Parameter \#3 parser index. */
500	uint8_t idxParse3;
501	/** Parameter \#4 parser index. */
502	uint8_t idxParse4;
503	/** The opcode identifier. This DIS specific, @see grp_dis_opcodes and
504	* VBox/disopcode.h. */
505	uint16_t uOpcode;
506	/** Parameter \#1 info, @see grp_dis_opparam. */
507	uint16_t fParam1;
508	/** Parameter \#2 info, @see grp_dis_opparam. */
509	uint16_t fParam2;
510	/** Parameter \#3 info, @see grp_dis_opparam. */
511	uint16_t fParam3;
512	/** Parameter \#4 info, @see grp_dis_opparam. */
513	uint16_t fParam4;
514	/** padding unused */
515	uint16_t uPadding;
516	/** Operand type flags, DISOPTYPE_XXX. */
517	uint32_t fOpType;
518	} DISOPCODE;
519	/** Pointer to const opcode. */
520	typedef const struct DISOPCODE *PCDISOPCODE;
521
522
523	/**
524	* Callback for reading instruction bytes.
525	*
526	* @returns VBox status code, bytes in DISSTATE::abInstr and byte count in
527	* DISSTATE::cbCachedInstr.
528	* @param pDis Pointer to the disassembler state. The user
529	* argument can be found in DISSTATE::pvUser if needed.
530	* @param offInstr The offset relative to the start of the instruction.
531	*
532	* To get the source address, add this to
533	* DISSTATE::uInstrAddr.
534	*
535	* To calculate the destination buffer address, use it
536	* as an index into DISSTATE::abInstr.
537	*
538	* @param cbMinRead The minimum number of bytes to read.
539	* @param cbMaxRead The maximum number of bytes that may be read.
540	*/
541	typedef DECLCALLBACK(int) FNDISREADBYTES(PDISSTATE pDis, uint8_t offInstr, uint8_t cbMinRead, uint8_t cbMaxRead);
542	/** Pointer to a opcode byte reader. */
543	typedef FNDISREADBYTES *PFNDISREADBYTES;
544
545	/** Parser callback.
546	* @remark no DECLCALLBACK() here because it's considered to be internal and
547	* there is no point in enforcing CDECL. */
548	typedef size_t FNDISPARSE(size_t offInstr, PCDISOPCODE pOp, PDISSTATE pDis, PDISOPPARAM pParam);
549	/** Pointer to a disassembler parser function. */
550	typedef FNDISPARSE *PFNDISPARSE;
551	/** Pointer to a const disassembler parser function pointer. */
552	typedef PFNDISPARSE const *PCPFNDISPARSE;
553
554	/**
555	* The diassembler state and result.
556	*/
557	typedef struct DISSTATE
558	{
559	/** The number of valid bytes in abInstr. */
560	uint8_t cbCachedInstr;
561	/** SIB fields. */
562	union
563	{
564	/** Bitfield view */
565	struct
566	{
567	uint8_t Base;
568	uint8_t Index;
569	uint8_t Scale;
570	} Bits;
571	} SIB;
572	/** ModRM fields. */
573	union
574	{
575	/** Bitfield view */
576	struct
577	{
578	uint8_t Rm;
579	uint8_t Reg;
580	uint8_t Mod;
581	} Bits;
582	} ModRM;
583	/** The CPU mode (DISCPUMODE). */
584	uint8_t uCpuMode;
585	/** The addressing mode (DISCPUMODE). */
586	uint8_t uAddrMode;
587	/** The operand mode (DISCPUMODE). */
588	uint8_t uOpMode;
589	/** Per instruction prefix settings. */
590	uint8_t fPrefix;
591	/** REX prefix value (64 bits only). */
592	uint8_t fRexPrefix;
593	/** Segment prefix value (DISSELREG). */
594	uint8_t idxSegPrefix;
595	/** Last prefix byte (for SSE2 extension tables). */
596	uint8_t bLastPrefix;
597	/** Last significant opcode byte of instruction. */
598	uint8_t bOpCode;
599	/** The size of the prefix bytes. */
600	uint8_t cbPrefix;
601	/** The instruction size. */
602	uint8_t cbInstr;
603	/** VEX presence flag, destination register and size */
604	uint8_t bVexDestReg;
605	/** VEX.W flag */
606	uint8_t bVexWFlag;
607	/** Unused bytes. */
608	uint8_t abUnused[1];
609	/** Internal: instruction filter */
610	uint32_t fFilter;
611	/** Internal: pointer to disassembly function table */
612	PCPFNDISPARSE pfnDisasmFnTable;
613	#if ARCH_BITS == 32
614	uint32_t uPtrPadding1;
615	#endif
616	/** Pointer to the current instruction. */
617	PCDISOPCODE pCurInstr;
618	#if ARCH_BITS == 32
619	uint32_t uPtrPadding2;
620	#endif
621	/** The instruction bytes. */
622	uint8_t abInstr[16];
623	/** SIB displacment. */
624	int32_t i32SibDisp;
625
626	/** Return code set by a worker function like the opcode bytes readers. */
627	int32_t rc;
628	/** The address of the instruction. */
629	RTUINTPTR uInstrAddr;
630	/** Optional read function */
631	PFNDISREADBYTES pfnReadBytes;
632	#if ARCH_BITS == 32
633	uint32_t uPadding3;
634	#endif
635	/** User data supplied as an argument to the APIs. */
636	void *pvUser;
637	#if ARCH_BITS == 32
638	uint32_t uPadding4;
639	#endif
640	/** Parameters. */
641	DISOPPARAM Param1;
642	DISOPPARAM Param2;
643	DISOPPARAM Param3;
644	DISOPPARAM Param4;
645	} DISSTATE;
646	AssertCompileSize(DISSTATE, 0xd8);
647
648	/** @deprecated Use DISSTATE and change Cpu and DisState to Dis. */
649	typedef DISSTATE DISCPUSTATE;
650
651
652
653	DISDECL(int) DISInstrToStr(void const *pvInstr, DISCPUMODE enmCpuMode,
654	PDISSTATE pDis, uint32_t pcbInstr, char pszOutput, size_t cbOutput);
655	DISDECL(int) DISInstrToStrWithReader(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, PFNDISREADBYTES pfnReadBytes, void *pvUser,
656	PDISSTATE pDis, uint32_t pcbInstr, char pszOutput, size_t cbOutput);
657	DISDECL(int) DISInstrToStrEx(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode,
658	PFNDISREADBYTES pfnReadBytes, void *pvUser, uint32_t uFilter,
659	PDISSTATE pDis, uint32_t pcbInstr, char pszOutput, size_t cbOutput);
660
661	DISDECL(int) DISInstr(void const pvInstr, DISCPUMODE enmCpuMode, PDISSTATE pDis, uint32_t pcbInstr);
662	DISDECL(int) DISInstrWithReader(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, PFNDISREADBYTES pfnReadBytes, void *pvUser,
663	PDISSTATE pDis, uint32_t *pcbInstr);
664	DISDECL(int) DISInstrEx(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, uint32_t uFilter,
665	PFNDISREADBYTES pfnReadBytes, void *pvUser,
666	PDISSTATE pDis, uint32_t *pcbInstr);
667	DISDECL(int) DISInstrWithPrefetchedBytes(RTUINTPTR uInstrAddr, DISCPUMODE enmCpuMode, uint32_t fFilter,
668	void const *pvPrefetched, size_t cbPretched,
669	PFNDISREADBYTES pfnReadBytes, void *pvUser,
670	PDISSTATE pDis, uint32_t *pcbInstr);
671
672	DISDECL(int) DISGetParamSize(PCDISSTATE pDis, PCDISOPPARAM pParam);
673	DISDECL(DISSELREG) DISDetectSegReg(PCDISSTATE pDis, PCDISOPPARAM pParam);
674	DISDECL(uint8_t) DISQuerySegPrefixByte(PCDISSTATE pDis);
675
676
677
678	/** @name Flags returned by DISQueryParamVal (DISQPVPARAMVAL::flags).
679	* @{
680	*/
681	#define DISQPV_FLAG_8 UINT8_C(0x01)
682	#define DISQPV_FLAG_16 UINT8_C(0x02)
683	#define DISQPV_FLAG_32 UINT8_C(0x04)
684	#define DISQPV_FLAG_64 UINT8_C(0x08)
685	#define DISQPV_FLAG_FARPTR16 UINT8_C(0x10)
686	#define DISQPV_FLAG_FARPTR32 UINT8_C(0x20)
687	/** @} */
688
689	/** @name Types returned by DISQueryParamVal (DISQPVPARAMVAL::flags).
690	* @{ */
691	#define DISQPV_TYPE_REGISTER UINT8_C(1)
692	#define DISQPV_TYPE_ADDRESS UINT8_C(2)
693	#define DISQPV_TYPE_IMMEDIATE UINT8_C(3)
694	/** @} */
695
696	typedef struct
697	{
698	union
699	{
700	uint8_t val8;
701	uint16_t val16;
702	uint32_t val32;
703	uint64_t val64;
704
705	struct
706	{
707	uint16_t sel;
708	uint32_t offset;
709	} farptr;
710	} val;
711
712	uint8_t type;
713	uint8_t size;
714	uint8_t flags;
715	} DISQPVPARAMVAL;
716	/** Pointer to opcode parameter value. */
717	typedef DISQPVPARAMVAL *PDISQPVPARAMVAL;
718
719	/** Indicates which parameter DISQueryParamVal should operate on. */
720	typedef enum DISQPVWHICH
721	{
722	DISQPVWHICH_DST = 1,
723	DISQPVWHICH_SRC,
724	DISQPVWHAT_32_BIT_HACK = 0x7fffffff
725	} DISQPVWHICH;
726	DISDECL(int) DISQueryParamVal(PCPUMCTXCORE pCtx, PCDISSTATE pDis, PCDISOPPARAM pParam, PDISQPVPARAMVAL pParamVal, DISQPVWHICH parmtype);
727	DISDECL(int) DISQueryParamRegPtr(PCPUMCTXCORE pCtx, PCDISSTATE pDis, PCDISOPPARAM pParam, void *ppReg, size_t pcbSize);
728
729	DISDECL(int) DISFetchReg8(PCCPUMCTXCORE pCtx, unsigned reg8, uint8_t *pVal);
730	DISDECL(int) DISFetchReg16(PCCPUMCTXCORE pCtx, unsigned reg16, uint16_t *pVal);
731	DISDECL(int) DISFetchReg32(PCCPUMCTXCORE pCtx, unsigned reg32, uint32_t *pVal);
732	DISDECL(int) DISFetchReg64(PCCPUMCTXCORE pCtx, unsigned reg64, uint64_t *pVal);
733	DISDECL(int) DISFetchRegSeg(PCCPUMCTXCORE pCtx, DISSELREG sel, RTSEL *pVal);
734	DISDECL(int) DISFetchRegSegEx(PCPUMCTXCORE pCtx, DISSELREG sel, PCPUMSELREG *ppSelReg);
735	DISDECL(int) DISWriteReg8(PCPUMCTXCORE pRegFrame, unsigned reg8, uint8_t val8);
736	DISDECL(int) DISWriteReg16(PCPUMCTXCORE pRegFrame, unsigned reg32, uint16_t val16);
737	DISDECL(int) DISWriteReg32(PCPUMCTXCORE pRegFrame, unsigned reg32, uint32_t val32);
738	DISDECL(int) DISWriteReg64(PCPUMCTXCORE pRegFrame, unsigned reg64, uint64_t val64);
739	DISDECL(int) DISWriteRegSeg(PCPUMCTXCORE pCtx, DISSELREG sel, RTSEL val);
740	DISDECL(int) DISPtrReg8(PCPUMCTXCORE pCtx, unsigned reg8, uint8_t **ppReg);
741	DISDECL(int) DISPtrReg16(PCPUMCTXCORE pCtx, unsigned reg16, uint16_t **ppReg);
742	DISDECL(int) DISPtrReg32(PCPUMCTXCORE pCtx, unsigned reg32, uint32_t **ppReg);
743	DISDECL(int) DISPtrReg64(PCPUMCTXCORE pCtx, unsigned reg64, uint64_t **ppReg);
744
745
746	/**
747	* Try resolve an address into a symbol name.
748	*
749	* For use with DISFormatYasmEx(), DISFormatMasmEx() and DISFormatGasEx().
750	*
751	* @returns VBox status code.
752	* @retval VINF_SUCCESS on success, pszBuf contains the full symbol name.
753	* @retval VINF_BUFFER_OVERFLOW if pszBuf is too small the symbol name. The
754	* content of pszBuf is truncated and zero terminated.
755	* @retval VERR_SYMBOL_NOT_FOUND if no matching symbol was found for the address.
756	*
757	* @param pDis Pointer to the disassembler CPU state.
758	* @param u32Sel The selector value. Use DIS_FMT_SEL_IS_REG, DIS_FMT_SEL_GET_VALUE,
759	* DIS_FMT_SEL_GET_REG to access this.
760	* @param uAddress The segment address.
761	* @param pszBuf Where to store the symbol name
762	* @param cchBuf The size of the buffer.
763	* @param poff If not a perfect match, then this is where the offset from the return
764	* symbol to the specified address is returned.
765	* @param pvUser The user argument.
766	*/
767	typedef DECLCALLBACK(int) FNDISGETSYMBOL(PCDISSTATE pDis, uint32_t u32Sel, RTUINTPTR uAddress, char pszBuf, size_t cchBuf, RTINTPTR poff, void *pvUser);
768	/** Pointer to a FNDISGETSYMBOL(). */
769	typedef FNDISGETSYMBOL *PFNDISGETSYMBOL;
770
771	/**
772	* Checks if the FNDISGETSYMBOL argument u32Sel is a register or not.
773	*/
774	#define DIS_FMT_SEL_IS_REG(u32Sel) ( !!((u32Sel) & RT_BIT(31)) )
775
776	/**
777	* Extracts the selector value from the FNDISGETSYMBOL argument u32Sel.
778	* @returns Selector value.
779	*/
780	#define DIS_FMT_SEL_GET_VALUE(u32Sel) ( (RTSEL)(u32Sel) )
781
782	/**
783	* Extracts the register number from the FNDISGETSYMBOL argument u32Sel.
784	* @returns USE_REG_CS, USE_REG_SS, USE_REG_DS, USE_REG_ES, USE_REG_FS or USE_REG_FS.
785	*/
786	#define DIS_FMT_SEL_GET_REG(u32Sel) ( ((u32Sel) >> 16) & 0xf )
787
788	/** @internal */
789	#define DIS_FMT_SEL_FROM_REG(uReg) ( ((uReg) << 16) \| RT_BIT(31) \| 0xffff )
790	/** @internal */
791	#define DIS_FMT_SEL_FROM_VALUE(Sel) ( (Sel) & 0xffff )
792
793
794	/** @name Flags for use with DISFormatYasmEx(), DISFormatMasmEx() and DISFormatGasEx().
795	* @{
796	*/
797	/** Put the address to the right. */
798	#define DIS_FMT_FLAGS_ADDR_RIGHT RT_BIT_32(0)
799	/** Put the address to the left. */
800	#define DIS_FMT_FLAGS_ADDR_LEFT RT_BIT_32(1)
801	/** Put the address in comments.
802	* For some assemblers this implies placing it to the right. */
803	#define DIS_FMT_FLAGS_ADDR_COMMENT RT_BIT_32(2)
804	/** Put the instruction bytes to the right of the disassembly. */
805	#define DIS_FMT_FLAGS_BYTES_RIGHT RT_BIT_32(3)
806	/** Put the instruction bytes to the left of the disassembly. */
807	#define DIS_FMT_FLAGS_BYTES_LEFT RT_BIT_32(4)
808	/** Put the instruction bytes in comments.
809	* For some assemblers this implies placing the bytes to the right. */
810	#define DIS_FMT_FLAGS_BYTES_COMMENT RT_BIT_32(5)
811	/** Put the bytes in square brackets. */
812	#define DIS_FMT_FLAGS_BYTES_BRACKETS RT_BIT_32(6)
813	/** Put spaces between the bytes. */
814	#define DIS_FMT_FLAGS_BYTES_SPACED RT_BIT_32(7)
815	/** Display the relative +/- offset of branch instructions that uses relative addresses,
816	* and put the target address in parenthesis. */
817	#define DIS_FMT_FLAGS_RELATIVE_BRANCH RT_BIT_32(8)
818	/** Strict assembly. The assembly should, when ever possible, make the
819	* assembler reproduce the exact same binary. (Refers to the yasm
820	* strict keyword.) */
821	#define DIS_FMT_FLAGS_STRICT RT_BIT_32(9)
822	/** Checks if the given flags are a valid combination. */
823	#define DIS_FMT_FLAGS_IS_VALID(fFlags) \
824	( !((fFlags) & ~UINT32_C(0x000003ff)) \
825	&& ((fFlags) & (DIS_FMT_FLAGS_ADDR_RIGHT \| DIS_FMT_FLAGS_ADDR_LEFT)) != (DIS_FMT_FLAGS_ADDR_RIGHT \| DIS_FMT_FLAGS_ADDR_LEFT) \
826	&& ( !((fFlags) & DIS_FMT_FLAGS_ADDR_COMMENT) \
827	\|\| (fFlags & (DIS_FMT_FLAGS_ADDR_RIGHT \| DIS_FMT_FLAGS_ADDR_LEFT)) ) \
828	&& ((fFlags) & (DIS_FMT_FLAGS_BYTES_RIGHT \| DIS_FMT_FLAGS_BYTES_LEFT)) != (DIS_FMT_FLAGS_BYTES_RIGHT \| DIS_FMT_FLAGS_BYTES_LEFT) \
829	&& ( !((fFlags) & (DIS_FMT_FLAGS_BYTES_COMMENT \| DIS_FMT_FLAGS_BYTES_BRACKETS)) \
830	\|\| (fFlags & (DIS_FMT_FLAGS_BYTES_RIGHT \| DIS_FMT_FLAGS_BYTES_LEFT)) ) \
831	)
832	/** @} */
833
834	DISDECL(size_t) DISFormatYasm( PCDISSTATE pDis, char *pszBuf, size_t cchBuf);
835	DISDECL(size_t) DISFormatYasmEx(PCDISSTATE pDis, char pszBuf, size_t cchBuf, uint32_t fFlags, PFNDISGETSYMBOL pfnGetSymbol, void pvUser);
836	DISDECL(size_t) DISFormatMasm( PCDISSTATE pDis, char *pszBuf, size_t cchBuf);
837	DISDECL(size_t) DISFormatMasmEx(PCDISSTATE pDis, char pszBuf, size_t cchBuf, uint32_t fFlags, PFNDISGETSYMBOL pfnGetSymbol, void pvUser);
838	DISDECL(size_t) DISFormatGas( PCDISSTATE pDis, char *pszBuf, size_t cchBuf);
839	DISDECL(size_t) DISFormatGasEx( PCDISSTATE pDis, char pszBuf, size_t cchBuf, uint32_t fFlags, PFNDISGETSYMBOL pfnGetSymbol, void pvUser);
840
841	/** @todo DISAnnotate(PCDISSTATE pDis, char *pszBuf, size_t cchBuf, register
842	* reader, memory reader); */
843
844	DISDECL(bool) DISFormatYasmIsOddEncoding(PDISSTATE pDis);
845
846	/** @} */
847
848	RT_C_DECLS_END
849
850	#endif /* !VBOX_INCLUDED_dis_h */
851

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source: vbox/trunk/include/VBox/dis.h@ 82968

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