VirtualBox

source: vbox/trunk/include/VBox/dis.h@ 8377

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1/** @file
2 * DIS - The VirtualBox Disassembler.
3 */
4
5/*
6 * Copyright (C) 2006-2007 Sun Microsystems, Inc.
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 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa
26 * Clara, CA 95054 USA or visit http://www.sun.com if you need
27 * additional information or have any questions.
28 */
29
30#ifndef ___VBox_disasm_h
31#define ___VBox_disasm_h
32
33#include <VBox/cdefs.h>
34#include <VBox/types.h>
35#include <VBox/disopcode.h>
36
37#if defined(__L4ENV__)
38#include <setjmp.h>
39#endif
40
41__BEGIN_DECLS
42
43
44/** CPU mode flags (DISCPUSTATE::mode).
45 * @{
46 */
47typedef enum
48{
49 CPUMODE_16BIT = 1,
50 CPUMODE_32BIT = 2,
51 CPUMODE_64BIT = 3,
52 /** hack forcing the size of the enum to 32-bits. */
53 CPUMODE_MAKE_32BIT_HACK = 0x7fffffff
54} DISCPUMODE;
55/** @} */
56
57/** Prefix byte flags
58 * @{
59 */
60#define PREFIX_NONE 0
61/** non-default address size. */
62#define PREFIX_ADDRSIZE RT_BIT(0)
63/** non-default operand size. */
64#define PREFIX_OPSIZE RT_BIT(1)
65/** lock prefix. */
66#define PREFIX_LOCK RT_BIT(2)
67/** segment prefix. */
68#define PREFIX_SEG RT_BIT(3)
69/** rep(e) prefix (not a prefix, but we'll treat is as one). */
70#define PREFIX_REP RT_BIT(4)
71/** rep(e) prefix (not a prefix, but we'll treat is as one). */
72#define PREFIX_REPNE RT_BIT(5)
73/** REX prefix (64 bits) */
74#define PREFIX_REX RT_BIT(6)
75/** @} */
76
77/** 64 bits prefix byte flags
78 * @{
79 */
80#define PREFIX_REX_OP_2_FLAGS(a) (a - OP_PARM_REX_START)
81#define PREFIX_REX_FLAGS PREFIX_REX_OP_2_FLAGS(OP_PARM_REX)
82#define PREFIX_REX_FLAGS_B PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_B)
83#define PREFIX_REX_FLAGS_X PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_X)
84#define PREFIX_REX_FLAGS_XB PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_XB)
85#define PREFIX_REX_FLAGS_R PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_R)
86#define PREFIX_REX_FLAGS_RB PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_RB)
87#define PREFIX_REX_FLAGS_RX PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_RX)
88#define PREFIX_REX_FLAGS_RXB PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_RXB)
89#define PREFIX_REX_FLAGS_W PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_W)
90#define PREFIX_REX_FLAGS_WB PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WB)
91#define PREFIX_REX_FLAGS_WX PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WX)
92#define PREFIX_REX_FLAGS_WXB PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WXB)
93#define PREFIX_REX_FLAGS_WR PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WR)
94#define PREFIX_REX_FLAGS_WRB PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WRB)
95#define PREFIX_REX_FLAGS_WRX PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WRX)
96#define PREFIX_REX_FLAGS_WRXB PREFIX_REX_OP_2_FLAGS(OP_PARM_REX_WRXB)
97/** @} */
98
99/**
100 * Operand type.
101 */
102#define OPTYPE_INVALID RT_BIT(0)
103#define OPTYPE_HARMLESS RT_BIT(1)
104#define OPTYPE_CONTROLFLOW RT_BIT(2)
105#define OPTYPE_POTENTIALLY_DANGEROUS RT_BIT(3)
106#define OPTYPE_DANGEROUS RT_BIT(4)
107#define OPTYPE_PORTIO RT_BIT(5)
108#define OPTYPE_PRIVILEGED RT_BIT(6)
109#define OPTYPE_PRIVILEGED_NOTRAP RT_BIT(7)
110#define OPTYPE_UNCOND_CONTROLFLOW RT_BIT(8)
111#define OPTYPE_RELATIVE_CONTROLFLOW RT_BIT(9)
112#define OPTYPE_COND_CONTROLFLOW RT_BIT(10)
113#define OPTYPE_INTERRUPT RT_BIT(11)
114#define OPTYPE_ILLEGAL RT_BIT(12)
115#define OPTYPE_RRM_DANGEROUS RT_BIT(14) /**< Some additional dangerouse ones when recompiling raw r0. */
116#define OPTYPE_RRM_DANGEROUS_16 RT_BIT(15) /**< Some additional dangerouse ones when recompiling 16-bit raw r0. */
117#define OPTYPE_RRM_MASK (OPTYPE_RRM_DANGEROUS | OPTYPE_RRM_DANGEROUS_16)
118#define OPTYPE_INHIBIT_IRQS RT_BIT(16) /**< Will or can inhibit irqs (sti, pop ss, mov ss) */
119#define OPTYPE_PORTIO_READ RT_BIT(17)
120#define OPTYPE_PORTIO_WRITE RT_BIT(18)
121#define OPTYPE_INVALID_64 RT_BIT(19) /**< Invalid in 64 bits mode */
122#define OPTYPE_ONLY_64 RT_BIT(20) /**< Only valid in 64 bits mode */
123#define OPTYPE_DEFAULT_64_OP_SIZE RT_BIT(21) /**< Default 64 bits operand size */
124#define OPTYPE_FORCED_64_OP_SIZE RT_BIT(22) /**< Forced 64 bits operand size; regardless of prefix bytes */
125#define OPTYPE_REXB_EXTENDS_OPREG RT_BIT(23) /**< REX.B extends the register field in the opcode byte */
126#define OPTYPE_ALL (0xffffffff)
127
128/** Parameter usage flags.
129 * @{
130 */
131#define USE_BASE RT_BIT_64(0)
132#define USE_INDEX RT_BIT_64(1)
133#define USE_SCALE RT_BIT_64(2)
134#define USE_REG_GEN8 RT_BIT_64(3)
135#define USE_REG_GEN16 RT_BIT_64(4)
136#define USE_REG_GEN32 RT_BIT_64(5)
137#define USE_REG_GEN64 RT_BIT_64(6)
138#define USE_REG_FP RT_BIT_64(7)
139#define USE_REG_MMX RT_BIT_64(8)
140#define USE_REG_XMM RT_BIT_64(9)
141#define USE_REG_CR RT_BIT_64(10)
142#define USE_REG_DBG RT_BIT_64(11)
143#define USE_REG_SEG RT_BIT_64(12)
144#define USE_REG_TEST RT_BIT_64(13)
145#define USE_DISPLACEMENT8 RT_BIT_64(14)
146#define USE_DISPLACEMENT16 RT_BIT_64(15)
147#define USE_DISPLACEMENT32 RT_BIT_64(16)
148#define USE_DISPLACEMENT64 RT_BIT_64(17)
149#define USE_RIPDISPLACEMENT32 RT_BIT_64(18)
150#define USE_IMMEDIATE8 RT_BIT_64(19)
151#define USE_IMMEDIATE8_REL RT_BIT_64(20)
152#define USE_IMMEDIATE16 RT_BIT_64(21)
153#define USE_IMMEDIATE16_REL RT_BIT_64(22)
154#define USE_IMMEDIATE32 RT_BIT_64(23)
155#define USE_IMMEDIATE32_REL RT_BIT_64(24)
156#define USE_IMMEDIATE64 RT_BIT_64(25)
157#define USE_IMMEDIATE_ADDR_0_32 RT_BIT_64(26)
158#define USE_IMMEDIATE_ADDR_16_32 RT_BIT_64(27)
159#define USE_IMMEDIATE_ADDR_0_16 RT_BIT_64(28)
160#define USE_IMMEDIATE_ADDR_16_16 RT_BIT_64(29)
161/** DS:ESI */
162#define USE_POINTER_DS_BASED RT_BIT_64(30)
163/** ES:EDI */
164#define USE_POINTER_ES_BASED RT_BIT_64(31)
165#define USE_IMMEDIATE16_SX8 RT_BIT_64(32)
166#define USE_IMMEDIATE32_SX8 RT_BIT_64(33)
167
168#define USE_IMMEDIATE (USE_IMMEDIATE8|USE_IMMEDIATE16|USE_IMMEDIATE32|USE_IMMEDIATE64|USE_IMMEDIATE8_REL|USE_IMMEDIATE16_REL|USE_IMMEDIATE32_REL|USE_IMMEDIATE_ADDR_0_32|USE_IMMEDIATE_ADDR_16_32|USE_IMMEDIATE_ADDR_0_16|USE_IMMEDIATE_ADDR_16_16|USE_IMMEDIATE16_SX8|USE_IMMEDIATE32_SX8)
169
170/** @} */
171
172/** index in {"RAX", "RCX", "RDX", "RBX", "RSP", "RBP", "RSI", "RDI", "R8", "R9", "R10", "R11", "R12", "R13", "R14", "R15"}
173 * @{
174 */
175#define USE_REG_RAX 0
176#define USE_REG_RCX 1
177#define USE_REG_RDX 2
178#define USE_REG_RBX 3
179#define USE_REG_RSP 4
180#define USE_REG_RBP 5
181#define USE_REG_RSI 6
182#define USE_REG_RDI 7
183#define USE_REG_R8 8
184#define USE_REG_R9 9
185#define USE_REG_R10 10
186#define USE_REG_R11 11
187#define USE_REG_R12 12
188#define USE_REG_R13 13
189#define USE_REG_R14 14
190#define USE_REG_R15 15
191/** @} */
192
193/** index in {"EAX", "ECX", "EDX", "EBX", "ESP", "EBP", "ESI", "EDI"}
194 * @{
195 */
196#define USE_REG_EAX 0
197#define USE_REG_ECX 1
198#define USE_REG_EDX 2
199#define USE_REG_EBX 3
200#define USE_REG_ESP 4
201#define USE_REG_EBP 5
202#define USE_REG_ESI 6
203#define USE_REG_EDI 7
204/** @} */
205/** index in {"AX", "CX", "DX", "BX", "SP", "BP", "SI", "DI"}
206 * @{
207 */
208#define USE_REG_AX 0
209#define USE_REG_CX 1
210#define USE_REG_DX 2
211#define USE_REG_BX 3
212#define USE_REG_SP 4
213#define USE_REG_BP 5
214#define USE_REG_SI 6
215#define USE_REG_DI 7
216/** @} */
217
218/** index in {"AL", "CL", "DL", "BL", "AH", "CH", "DH", "BH"}
219 * @{
220 */
221#define USE_REG_AL 0
222#define USE_REG_CL 1
223#define USE_REG_DL 2
224#define USE_REG_BL 3
225#define USE_REG_AH 4
226#define USE_REG_CH 5
227#define USE_REG_DH 6
228#define USE_REG_BH 7
229/** @} */
230
231/** index in {ES, CS, SS, DS, FS, GS}
232 * @{
233 */
234#define USE_REG_ES 0
235#define USE_REG_CS 1
236#define USE_REG_SS 2
237#define USE_REG_DS 3
238#define USE_REG_FS 4
239#define USE_REG_GS 5
240/** @} */
241
242#define USE_REG_FP0 0
243#define USE_REG_FP1 1
244#define USE_REG_FP2 2
245#define USE_REG_FP3 3
246#define USE_REG_FP4 4
247#define USE_REG_FP5 5
248#define USE_REG_FP6 6
249#define USE_REG_FP7 7
250
251#define USE_REG_CR0 0
252#define USE_REG_CR1 1
253#define USE_REG_CR2 2
254#define USE_REG_CR3 3
255#define USE_REG_CR4 4
256
257#define USE_REG_DR0 0
258#define USE_REG_DR1 1
259#define USE_REG_DR2 2
260#define USE_REG_DR3 3
261#define USE_REG_DR4 4
262#define USE_REG_DR5 5
263#define USE_REG_DR6 6
264#define USE_REG_DR7 7
265
266#define USE_REG_MMX0 0
267#define USE_REG_MMX1 1
268#define USE_REG_MMX2 2
269#define USE_REG_MMX3 3
270#define USE_REG_MMX4 4
271#define USE_REG_MMX5 5
272#define USE_REG_MMX6 6
273#define USE_REG_MMX7 7
274
275#define USE_REG_XMM0 0
276#define USE_REG_XMM1 1
277#define USE_REG_XMM2 2
278#define USE_REG_XMM3 3
279#define USE_REG_XMM4 4
280#define USE_REG_XMM5 5
281#define USE_REG_XMM6 6
282#define USE_REG_XMM7 7
283
284/** Used by DISQueryParamVal & EMIQueryParamVal
285 * @{
286 */
287#define PARAM_VAL8 RT_BIT(0)
288#define PARAM_VAL16 RT_BIT(1)
289#define PARAM_VAL32 RT_BIT(2)
290#define PARAM_VAL64 RT_BIT(3)
291#define PARAM_VALFARPTR16 RT_BIT(4)
292#define PARAM_VALFARPTR32 RT_BIT(5)
293
294#define PARMTYPE_REGISTER 1
295#define PARMTYPE_ADDRESS 2
296#define PARMTYPE_IMMEDIATE 3
297
298typedef struct
299{
300 uint32_t type;
301 uint32_t size;
302 uint64_t flags;
303
304 union
305 {
306 uint8_t val8;
307 uint16_t val16;
308 uint32_t val32;
309 uint64_t val64;
310
311 struct
312 {
313 uint16_t sel;
314 uint32_t offset;
315 } farptr;
316 } val;
317
318} OP_PARAMVAL;
319/** Pointer to opcode parameter value. */
320typedef OP_PARAMVAL *POP_PARAMVAL;
321
322typedef enum
323{
324 PARAM_DEST,
325 PARAM_SOURCE
326} PARAM_TYPE;
327
328/** @} */
329
330/**
331 * Operand Parameter.
332 */
333typedef struct _OP_PARAMETER
334{
335 int param;
336 uint64_t parval;
337 char szParam[32];
338
339 int32_t disp8, disp16, disp32;
340 uint32_t size;
341
342 int64_t disp64;
343 uint64_t flags;
344
345 union
346 {
347 uint32_t reg_gen;
348 /** ST(0) - ST(7) */
349 uint32_t reg_fp;
350 /** MMX0 - MMX7 */
351 uint32_t reg_mmx;
352 /** XMM0 - XMM7 */
353 uint32_t reg_xmm;
354 /** {ES, CS, SS, DS, FS, GS} */
355 uint32_t reg_seg;
356 /** TR0-TR7 (?) */
357 uint32_t reg_test;
358 /** CR0-CR4 */
359 uint32_t reg_ctrl;
360 /** DR0-DR7 */
361 uint32_t reg_dbg;
362 } base;
363 union
364 {
365 uint32_t reg_gen;
366 } index;
367
368 /** 2, 4 or 8. */
369 uint32_t scale;
370
371} OP_PARAMETER;
372/** Pointer to opcode parameter. */
373typedef OP_PARAMETER *POP_PARAMETER;
374/** Pointer to opcode parameter. */
375typedef const OP_PARAMETER *PCOP_PARAMETER;
376
377
378struct _OPCODE;
379/** Pointer to opcode. */
380typedef struct _OPCODE *POPCODE;
381/** Pointer to const opcode. */
382typedef const struct _OPCODE *PCOPCODE;
383
384typedef DECLCALLBACK(int) FN_DIS_READBYTES(RTUINTPTR pSrc, uint8_t *pDest, uint32_t size, void *pvUserdata);
385typedef FN_DIS_READBYTES *PFN_DIS_READBYTES;
386
387/* forward decl */
388struct _DISCPUSTATE;
389/** Pointer to the disassembler CPU state. */
390typedef struct _DISCPUSTATE *PDISCPUSTATE;
391
392/** Parser callback.
393 * @remark no DECLCALLBACK() here because it's considered to be internal (really, I'm too lazy to update all the functions). */
394typedef unsigned FNDISPARSE(RTUINTPTR pu8CodeBlock, PCOPCODE pOp, POP_PARAMETER pParam, PDISCPUSTATE pCpu);
395typedef FNDISPARSE *PFNDISPARSE;
396
397typedef struct _DISCPUSTATE
398{
399 /* Global setting */
400 DISCPUMODE mode;
401
402 /* Per instruction prefix settings */
403 uint32_t prefix;
404 /** segment prefix value. */
405 uint32_t prefix_seg;
406 /** rex prefix value (64 bits only */
407 uint32_t prefix_rex;
408 /** addressing mode (16 or 32 bits). (CPUMODE_*) */
409 DISCPUMODE addrmode;
410 /** operand mode (16 or 32 bits). (CPUMODE_*) */
411 DISCPUMODE opmode;
412
413 OP_PARAMETER param1;
414 OP_PARAMETER param2;
415 OP_PARAMETER param3;
416
417 /** ModRM fields. */
418 union
419 {
420 /* Bitfield view */
421 struct
422 {
423 unsigned Rm : 4;
424 unsigned Reg : 4;
425 unsigned Mod : 2;
426 } Bits;
427 /* unsigned view */
428 unsigned u;
429 } ModRM;
430
431 /** SIB fields. */
432 union
433 {
434 /* Bitfield view */
435 struct
436 {
437 unsigned Base : 4;
438 unsigned Index : 4;
439 unsigned Scale : 2;
440 } Bits;
441 /* unsigned view */
442 unsigned u;
443 } SIB;
444
445 int32_t disp;
446
447 /** First opcode byte of instruction. */
448 uint8_t opcode;
449 /** Last prefix byte (for SSE2 extension tables) */
450 uint8_t lastprefix;
451 RTUINTPTR opaddr;
452 uint32_t opsize;
453#ifndef DIS_CORE_ONLY
454 /** Opcode format string for current instruction. */
455 const char *pszOpcode;
456#endif
457
458 /** Internal: pointer to disassembly function table */
459 PFNDISPARSE *pfnDisasmFnTable;
460 /** Internal: instruction filter */
461 uint32_t uFilter;
462
463 /** Pointer to the current instruction. */
464 PCOPCODE pCurInstr;
465
466 void *apvUserData[3];
467
468 /** Optional read function */
469 PFN_DIS_READBYTES pfnReadBytes;
470#ifdef __L4ENV__
471 jmp_buf *pJumpBuffer;
472#endif /* __L4ENV__ */
473} DISCPUSTATE;
474
475/** Opcode. */
476#pragma pack(4)
477typedef struct _OPCODE
478{
479#ifndef DIS_CORE_ONLY
480 const char *pszOpcode;
481#endif
482 uint8_t idxParse1;
483 uint8_t idxParse2;
484 uint8_t idxParse3;
485 uint16_t opcode;
486 uint16_t param1;
487 uint16_t param2;
488 uint16_t param3;
489
490 unsigned optype;
491} OPCODE;
492#pragma pack()
493
494
495/**
496 * Disassembles a code block.
497 *
498 * @returns VBox error code
499 * @param pCpu Pointer to cpu structure which have DISCPUSTATE::mode
500 * set correctly.
501 * @param pvCodeBlock Pointer to the strunction to disassemble.
502 * @param cbMax Maximum number of bytes to disassemble.
503 * @param pcbSize Where to store the size of the instruction.
504 * NULL is allowed.
505 *
506 *
507 * @todo Define output callback.
508 * @todo Using signed integers as sizes is a bit odd. There are still
509 * some GCC warnings about mixing signed and unsigend integers.
510 * @todo Need to extend this interface to include a code address so we
511 * can dissassemble GC code. Perhaps a new function is better...
512 * @remark cbMax isn't respected as a boundry. DISInstr() will read beyond cbMax.
513 * This means *pcbSize >= cbMax sometimes.
514 */
515DISDECL(int) DISBlock(PDISCPUSTATE pCpu, RTUINTPTR pvCodeBlock, unsigned cbMax, unsigned *pSize);
516
517/**
518 * Disassembles one instruction
519 *
520 * @returns VBox error code
521 * @param pCpu Pointer to cpu structure which have DISCPUSTATE::mode
522 * set correctly.
523 * @param pu8Instruction Pointer to the instrunction to disassemble.
524 * @param u32EipOffset Offset to add to instruction address to get the real virtual address
525 * @param pcbSize Where to store the size of the instruction.
526 * NULL is allowed.
527 * @param pszOutput Storage for disassembled instruction
528 *
529 * @todo Define output callback.
530 */
531DISDECL(int) DISInstr(PDISCPUSTATE pCpu, RTUINTPTR pu8Instruction, unsigned u32EipOffset, unsigned *pcbSize, char *pszOutput);
532
533/**
534 * Disassembles one instruction
535 *
536 * @returns VBox error code
537 * @param pCpu Pointer to cpu structure which have DISCPUSTATE::mode
538 * set correctly.
539 * @param pu8Instruction Pointer to the strunction to disassemble.
540 * @param u32EipOffset Offset to add to instruction address to get the real virtual address
541 * @param pcbSize Where to store the size of the instruction.
542 * NULL is allowed.
543 * @param pszOutput Storage for disassembled instruction
544 * @param uFilter Instruction type filter
545 *
546 * @todo Define output callback.
547 */
548DISDECL(int) DISInstrEx(PDISCPUSTATE pCpu, RTUINTPTR pu8Instruction, uint32_t u32EipOffset, uint32_t *pcbSize,
549 char *pszOutput, unsigned uFilter);
550
551/**
552 * Parses one instruction.
553 * The result is found in pCpu.
554 *
555 * @returns VBox error code
556 * @param pCpu Pointer to cpu structure which has DISCPUSTATE::mode set correctly.
557 * @param InstructionAddr Pointer to the instruction to parse.
558 * @param pcbInstruction Where to store the size of the instruction.
559 * NULL is allowed.
560 */
561DISDECL(int) DISCoreOne(PDISCPUSTATE pCpu, RTUINTPTR InstructionAddr, unsigned *pcbInstruction);
562
563/**
564 * Parses one guest instruction.
565 * The result is found in pCpu and pcbInstruction.
566 *
567 * @returns VBox status code.
568 * @param InstructionAddr Address of the instruction to decode. What this means
569 * is left to the pfnReadBytes function.
570 * @param enmCpuMode The CPU mode. CPUMODE_32BIT, CPUMODE_16BIT, or CPUMODE_64BIT.
571 * @param pfnReadBytes Callback for reading instruction bytes.
572 * @param pvUser User argument for the instruction reader. (Ends up in apvUserData[0].)
573 * @param pCpu Pointer to cpu structure. Will be initialized.
574 * @param pcbInstruction Where to store the size of the instruction.
575 * NULL is allowed.
576 */
577DISDECL(int) DISCoreOneEx(RTUINTPTR InstructionAddr, DISCPUMODE enmCpuMode, PFN_DIS_READBYTES pfnReadBytes, void *pvUser,
578 PDISCPUSTATE pCpu, unsigned *pcbInstruction);
579
580DISDECL(int) DISGetParamSize(PDISCPUSTATE pCpu, POP_PARAMETER pParam);
581DISDECL(int) DISDetectSegReg(PDISCPUSTATE pCpu, POP_PARAMETER pParam);
582DISDECL(uint8_t) DISQuerySegPrefixByte(PDISCPUSTATE pCpu);
583
584/**
585 * Returns the value of the parameter in pParam
586 *
587 * @returns VBox error code
588 * @param pCtx Exception structure pointer
589 * @param pCpu Pointer to cpu structure which have DISCPUSTATE::mode
590 * set correctly.
591 * @param pParam Pointer to the parameter to parse
592 * @param pParamVal Pointer to parameter value (OUT)
593 * @param parmtype Parameter type
594 *
595 * @note Currently doesn't handle FPU/XMM/MMX/3DNow! parameters correctly!!
596 *
597 */
598DISDECL(int) DISQueryParamVal(PCPUMCTXCORE pCtx, PDISCPUSTATE pCpu, POP_PARAMETER pParam, POP_PARAMVAL pParamVal, PARAM_TYPE parmtype);
599DISDECL(int) DISQueryParamRegPtr(PCPUMCTXCORE pCtx, PDISCPUSTATE pCpu, POP_PARAMETER pParam, void **ppReg, size_t *pcbSize);
600
601DISDECL(int) DISFetchReg8(PCPUMCTXCORE pCtx, unsigned reg8, uint8_t *pVal);
602DISDECL(int) DISFetchReg16(PCPUMCTXCORE pCtx, unsigned reg16, uint16_t *pVal);
603DISDECL(int) DISFetchReg32(PCPUMCTXCORE pCtx, unsigned reg32, uint32_t *pVal);
604DISDECL(int) DISFetchReg64(PCPUMCTXCORE pCtx, unsigned reg64, uint64_t *pVal);
605DISDECL(int) DISFetchRegSeg(PCPUMCTXCORE pCtx, unsigned sel, RTSEL *pVal);
606DISDECL(int) DISFetchRegSegEx(PCPUMCTXCORE pCtx, unsigned sel, RTSEL *pVal, PCPUMSELREGHID *ppSelHidReg);
607DISDECL(int) DISWriteReg8(PCPUMCTXCORE pRegFrame, unsigned reg8, uint8_t val8);
608DISDECL(int) DISWriteReg16(PCPUMCTXCORE pRegFrame, unsigned reg32, uint16_t val16);
609DISDECL(int) DISWriteReg32(PCPUMCTXCORE pRegFrame, unsigned reg32, uint32_t val32);
610DISDECL(int) DISWriteReg64(PCPUMCTXCORE pRegFrame, unsigned reg64, uint64_t val64);
611DISDECL(int) DISWriteRegSeg(PCPUMCTXCORE pCtx, unsigned sel, RTSEL val);
612DISDECL(int) DISPtrReg8(PCPUMCTXCORE pCtx, unsigned reg8, uint8_t **ppReg);
613DISDECL(int) DISPtrReg16(PCPUMCTXCORE pCtx, unsigned reg16, uint16_t **ppReg);
614DISDECL(int) DISPtrReg32(PCPUMCTXCORE pCtx, unsigned reg32, uint32_t **ppReg);
615DISDECL(int) DISPtrReg64(PCPUMCTXCORE pCtx, unsigned reg64, uint64_t **ppReg);
616
617__END_DECLS
618
619#endif
620
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