bs3-cpu-basic-2-pf.c32@ 78210

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1	/* $Id: bs3-cpu-basic-2-pf.c32 76553 2019-01-01 01:45:53Z vboxsync $ */
2	/** @file
3	* BS3Kit - bs3-cpu-basic-2, 32-bit C code.
4	*/
5
6	/*
7	* Copyright (C) 2007-2019 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	* The contents of this file may alternatively be used under the terms
18	* of the Common Development and Distribution License Version 1.0
19	* (CDDL) only, as it comes in the "COPYING.CDDL" file of the
20	* VirtualBox OSE distribution, in which case the provisions of the
21	* CDDL are applicable instead of those of the GPL.
22	*
23	* You may elect to license modified versions of this file under the
24	* terms and conditions of either the GPL or the CDDL or both.
25	*/
26
27
28	/*********************************************************************************************************************************
29	* Header Files *
30	*********************************************************************************************************************************/
31	#include <bs3kit.h>
32	#include <iprt/asm-amd64-x86.h>
33
34
35	/*********************************************************************************************************************************
36	* Defined Constants And Macros *
37	*********************************************************************************************************************************/
38	#define CHECK_MEMBER(a_pszMode, a_szName, a_szFmt, a_Actual, a_Expected) \
39	do { \
40	if ((a_Actual) == (a_Expected)) { /* likely */ } \
41	else Bs3TestFailedF("%u - %s: " a_szName "=" a_szFmt " expected " a_szFmt, \
42	g_usBs3TestStep, (a_pszMode), (a_Actual), (a_Expected)); \
43	} while (0)
44
45	#define BS3CPUBASIC2PF_HALT(pThis) \
46	do { \
47	Bs3TestPrintf("Halting: pteworker=%s store=%s accessor=%s\n", \
48	pThis->pszPteWorker, pThis->pszStore, pThis->pszAccessor); \
49	ASMHalt(); \
50	} while (0)
51
52
53	/** @def BS3CPUBASIC2PF_FASTER
54	* This is useful for IEM execution. */
55	#define BS3CPUBASIC2PF_FASTER
56
57
58	/*********************************************************************************************************************************
59	* Structures and Typedefs *
60	*********************************************************************************************************************************/
61	typedef void BS3_CALL FNBS3CPUBASIC2PFSNIPPET(void);
62
63	typedef struct FNBS3CPUBASIC2PFTSTCODE
64	{
65	FNBS3CPUBASIC2PFSNIPPET *pfn;
66	uint8_t offUd2;
67
68	} FNBS3CPUBASIC2PFTSTCODE;
69	typedef FNBS3CPUBASIC2PFTSTCODE const *PCFNBS3CPUBASIC2PFTSTCODE;
70
71	typedef struct BS3CPUBASIC2PFTTSTCMNMODE
72	{
73	uint8_t bMode;
74	FNBS3CPUBASIC2PFTSTCODE MovLoad;
75	FNBS3CPUBASIC2PFTSTCODE MovStore;
76	FNBS3CPUBASIC2PFTSTCODE Xchg;
77	FNBS3CPUBASIC2PFTSTCODE CmpXchg;
78	FNBS3CPUBASIC2PFTSTCODE DivMem;
79	} BS3CPUBASIC2PFTTSTCMNMODE;
80	typedef BS3CPUBASIC2PFTTSTCMNMODE const *PCBS3CPUBASIC2PFTTSTCMNMODE;
81
82
83	typedef struct BS3CPUBASIC2PFSTATE
84	{
85	/** The mode we're currently testing. */
86	uint8_t bMode;
87	/** The size of a natural access. */
88	uint8_t cbAccess;
89	/** The common mode functions. */
90	PCBS3CPUBASIC2PFTTSTCMNMODE pCmnMode;
91	/** Address of the test area (alias). */
92	union
93	{
94	uint64_t u;
95	uint32_t u32;
96	uint16_t u16;
97	} uTestAddr;
98	/** Pointer to the orignal test area mapping. */
99	uint8_t *pbOrgTest;
100	/** The size of the test area (at least two pages). */
101	uint32_t cbTest;
102	/** cbTest expressed as a page count. */
103	uint16_t cTestPages;
104	/** The number of PTEs in the first PTE, i.e. what we can
105	* safely access via PgInfo.u.Pae.pPte/PgInfo.u.Legacy.pPte. */
106	uint16_t cTest1stPtes;
107	/** The number of PDEs for cTestPages. */
108	uint16_t cTestPdes;
109	/** 16-bit data selector for uTestAddr.u32. */
110	uint16_t uSel16TestData;
111	/** 16-bit code selector for uTestAddr.u32. */
112	uint16_t uSel16TestCode;
113	/** The size of the PDE backup. */
114	uint16_t cbPdeBackup;
115	/** The size of the PTE backup. */
116	uint16_t cbPteBackup;
117	/** Test paging information for uTestAddr.u. */
118	BS3PAGINGINFO4ADDR PgInfo;
119
120	/** Set if we can use the INVLPG instruction. */
121	bool fUseInvlPg;
122	/** Physical addressing width. */
123	uint8_t cBitsPhysWidth;
124
125	/** Reflects CR0.WP. */
126	bool fWp;
127	/** Reflects EFER.NXE & CR4.PAE. */
128	bool fNxe;
129
130	const char *pszAccessor;
131	const char *pszPteWorker;
132	const char *pszStore;
133
134	/** Trap context frame. */
135	BS3TRAPFRAME TrapCtx;
136	/** Expected result context. */
137	BS3REGCTX ExpectCtx;
138
139	/** The PML4E backup. */
140	uint64_t u64Pml4eBackup;
141	/** The PDPTE backup. */
142	uint64_t u64PdpteBackup;
143	/** The PDE backup. */
144	uint64_t au64PdeBackup[16];
145	/** The PTE backup. */
146	union
147	{
148	uint32_t Legacy[X86_PG_ENTRIES];
149	uint64_t Pae[X86_PG_PAE_ENTRIES];
150	} PteBackup;
151
152	} BS3CPUBASIC2PFSTATE;
153	/** Pointer to state for the \#PF test. */
154	typedef BS3CPUBASIC2PFSTATE *PBS3CPUBASIC2PFSTATE;
155
156
157	/**
158	* Paging modification worker.
159	*/
160	typedef struct BS3CPUBASIC2PFMODPT
161	{
162	const char *pszName;
163	uint32_t fPresent : 1;
164	uint32_t fUser : 1;
165	uint32_t fWriteable : 1;
166	uint32_t fNoExecute : 1;
167	uint32_t fReserved : 1;
168	uint32_t uModifyArg : 24;
169	void (pfnModify)(PBS3CPUBASIC2PFSTATE pThis, unsigned iStore, struct BS3CPUBASIC2PFMODPT const pEntry,
170	uint32_t fClearMask, uint32_t fSetMask);
171	bool (pfnApplicable)(PBS3CPUBASIC2PFSTATE pThis, struct BS3CPUBASIC2PFMODPT const pEntry);
172	} BS3CPUBASIC2PFMODPT;
173	typedef BS3CPUBASIC2PFMODPT const *PCBS3CPUBASIC2PFMODPT;
174
175	/** Page level protection. Alternative is page directory or higher level. */
176	#define BS3CB2PFACC_F_PAGE_LEVEL RT_BIT(0)
177	/** Directly access the boobytrapped page, no edging on or off it. */
178	#define BS3CB2PFACC_F_DIRECT RT_BIT(1)
179
180	/**
181	* Memory accessor.
182	*/
183	typedef struct BS3CPUBASIC2PFACCESSOR
184	{
185	/** Accessor name. */
186	const char *pszName;
187	/** The accessor. */
188	void (*pfnAccessor)(PBS3CPUBASIC2PFSTATE pThis, PBS3REGCTX pCtx, uint32_t fFlags, uint8_t bXcpt, uint8_t uPfErrCd);
189	/** The X86_TRAP_PF_XXX access flags this access sets. */
190	uint32_t fAccess;
191	/** The exception when things are fine. */
192	uint8_t bOkayXcpt;
193	} BS3CPUBASIC2PFACCESSOR;
194	typedef const BS3CPUBASIC2PFACCESSOR *PCBS3CPUBASIC2PFACCESSOR;
195
196
197	/*********************************************************************************************************************************
198	* Internal Functions *
199	*********************************************************************************************************************************/
200	FNBS3TESTDOMODE bs3CpuBasic2_RaiseXcpt0e_c32;
201
202	/* bs3-cpu-basic-2-asm.asm: */
203	void BS3_CALL bs3CpuBasic2_Store_mov_c32(void *pvDst, uint32_t uValue, uint32_t uOld);
204	void BS3_CALL bs3CpuBasic2_Store_xchg_c32(void *pvDst, uint32_t uValue, uint32_t uOld);
205	void BS3_CALL bs3CpuBasic2_Store_cmpxchg_c32(void *pvDst, uint32_t uValue, uint32_t uOld);
206
207
208	/* bs3-cpu-basic-2-template.mac: */
209	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_mov_ax_ds_bx__ud2_c16;
210	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_mov_ds_bx_ax__ud2_c16;
211	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_xchg_ds_bx_ax__ud2_c16;
212	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_cmpxchg_ds_bx_cx__ud2_c16;
213	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_div_ds_bx__ud2_c16;
214
215	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_mov_ax_ds_bx__ud2_c32;
216	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_mov_ds_bx_ax__ud2_c32;
217	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_xchg_ds_bx_ax__ud2_c32;
218	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_cmpxchg_ds_bx_cx__ud2_c32;
219	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_div_ds_bx__ud2_c32;
220
221	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_mov_ax_ds_bx__ud2_c64;
222	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_mov_ds_bx_ax__ud2_c64;
223	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_xchg_ds_bx_ax__ud2_c64;
224	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_cmpxchg_ds_bx_cx__ud2_c64;
225	FNBS3CPUBASIC2PFSNIPPET bs3CpuBasic2_div_ds_bx__ud2_c64;
226
227
228	/*********************************************************************************************************************************
229	* Global Variables *
230	*********************************************************************************************************************************/
231	/** Page table access functions. */
232	static const struct
233	{
234	const char *pszName;
235	void (BS3_CALL pfnStore)(void pvDst, uint32_t uValue, uint32_t uOld);
236	} g_aStoreMethods[] =
237	{
238	{ "mov", bs3CpuBasic2_Store_mov_c32 },
239	{ "xchg", bs3CpuBasic2_Store_xchg_c32 },
240	{ "cmpxchg", bs3CpuBasic2_Store_cmpxchg_c32 },
241	};
242
243
244	static const BS3CPUBASIC2PFTTSTCMNMODE g_aCmnModes[] =
245	{
246	{
247	BS3_MODE_CODE_16,
248	{ bs3CpuBasic2_mov_ax_ds_bx__ud2_c16, 2 },
249	{ bs3CpuBasic2_mov_ds_bx_ax__ud2_c16, 2 },
250	{ bs3CpuBasic2_xchg_ds_bx_ax__ud2_c16, 2 },
251	{ bs3CpuBasic2_cmpxchg_ds_bx_cx__ud2_c16, 3 },
252	{ bs3CpuBasic2_div_ds_bx__ud2_c16, 2 },
253	},
254	{
255	BS3_MODE_CODE_32,
256	{ bs3CpuBasic2_mov_ax_ds_bx__ud2_c32, 2 },
257	{ bs3CpuBasic2_mov_ds_bx_ax__ud2_c32, 2 },
258	{ bs3CpuBasic2_xchg_ds_bx_ax__ud2_c32, 2 },
259	{ bs3CpuBasic2_cmpxchg_ds_bx_cx__ud2_c32, 3 },
260	{ bs3CpuBasic2_div_ds_bx__ud2_c32, 2 },
261	},
262	{
263	BS3_MODE_CODE_64,
264	{ bs3CpuBasic2_mov_ax_ds_bx__ud2_c64, 2 + 1 },
265	{ bs3CpuBasic2_mov_ds_bx_ax__ud2_c64, 2 + 1 },
266	{ bs3CpuBasic2_xchg_ds_bx_ax__ud2_c64, 2 + 1 },
267	{ bs3CpuBasic2_cmpxchg_ds_bx_cx__ud2_c64, 3 + 1 },
268	{ bs3CpuBasic2_div_ds_bx__ud2_c64, 2 + 1 },
269	},
270	{
271	BS3_MODE_CODE_V86,
272	{ bs3CpuBasic2_mov_ax_ds_bx__ud2_c16, 2 },
273	{ bs3CpuBasic2_mov_ds_bx_ax__ud2_c16, 2 },
274	{ bs3CpuBasic2_xchg_ds_bx_ax__ud2_c16, 2 },
275	{ bs3CpuBasic2_cmpxchg_ds_bx_cx__ud2_c16, 3 },
276	{ bs3CpuBasic2_div_ds_bx__ud2_c16, 2 },
277	},
278	};
279
280
281	/**
282	* Compares a CPU trap.
283	*/
284	static void bs3CpuBasic2Pf_CompareCtx(PBS3CPUBASIC2PFSTATE pThis, PBS3REGCTX pExpectCtx, int cbPcAdjust,
285	uint8_t bXcpt, unsigned uErrCd)
286	{
287	const char *pszHint = "xxxx";
288	uint16_t const cErrorsBefore = Bs3TestSubErrorCount();
289	uint32_t fExtraEfl;
290
291	CHECK_MEMBER(pszHint, "bXcpt", "%#04x", pThis->TrapCtx.bXcpt, bXcpt);
292	CHECK_MEMBER(pszHint, "uErrCd", "%#06RX16", (uint16_t)pThis->TrapCtx.uErrCd, (uint16_t)uErrCd); /* 486 only writes a word */
293
294	fExtraEfl = X86_EFL_RF;
295	if (BS3_MODE_IS_16BIT_SYS(g_bBs3CurrentMode))
296	fExtraEfl = 0;
297	else
298	fExtraEfl = X86_EFL_RF;
299	Bs3TestCheckRegCtxEx(&pThis->TrapCtx.Ctx, pExpectCtx, cbPcAdjust, 0 /cbSpAdjust/, fExtraEfl, pszHint, g_usBs3TestStep);
300	if (Bs3TestSubErrorCount() != cErrorsBefore)
301	{
302	Bs3TrapPrintFrame(&pThis->TrapCtx);
303	#if 1
304	Bs3TestPrintf("Halting: g_uBs3CpuDetected=%#x\n", g_uBs3CpuDetected);
305	Bs3TestPrintf("Halting: bXcpt=%#x uErrCd=%#x\n", bXcpt, uErrCd);
306	BS3CPUBASIC2PF_HALT(pThis);
307	#endif
308	}
309	}
310
311
312	/**
313	* Compares a CPU trap.
314	*/
315	static void bs3CpuBasic2Pf_CompareSimpleCtx(PBS3CPUBASIC2PFSTATE pThis, PBS3REGCTX pStartCtx, int offAddPC,
316	uint8_t bXcpt, unsigned uErrCd, uint64_t uCr2)
317	{
318	const char *pszHint = "xxxx";
319	uint16_t const cErrorsBefore = Bs3TestSubErrorCount();
320	uint64_t const uSavedCr2 = pStartCtx->cr2.u;
321	uint32_t fExtraEfl;
322
323	CHECK_MEMBER(pszHint, "bXcpt", "%#04x", pThis->TrapCtx.bXcpt, bXcpt);
324	CHECK_MEMBER(pszHint, "uErrCd", "%#06RX16", (uint16_t)pThis->TrapCtx.uErrCd, (uint16_t)uErrCd); /* 486 only writes a word */
325
326	fExtraEfl = X86_EFL_RF;
327	if (BS3_MODE_IS_16BIT_SYS(g_bBs3CurrentMode))
328	fExtraEfl = 0;
329	else
330	fExtraEfl = X86_EFL_RF;
331	pStartCtx->cr2.u = uCr2;
332	Bs3TestCheckRegCtxEx(&pThis->TrapCtx.Ctx, pStartCtx, offAddPC, 0 /cbSpAdjust/, fExtraEfl, pszHint, g_usBs3TestStep);
333	pStartCtx->cr2.u = uSavedCr2;
334	if (Bs3TestSubErrorCount() != cErrorsBefore)
335	{
336	Bs3TrapPrintFrame(&pThis->TrapCtx);
337	#if 1
338	Bs3TestPrintf("Halting: g_uBs3CpuDetected=%#x\n", g_uBs3CpuDetected);
339	Bs3TestPrintf("Halting: bXcpt=%#x uErrCd=%#x\n", bXcpt, uErrCd);
340	BS3CPUBASIC2PF_HALT(pThis);
341	#endif
342	}
343	}
344
345
346	/**
347	* Checks the trap context for a simple \#PF trap.
348	*/
349	static void bs3CpuBasic2Pf_CompareSimplePf(PBS3CPUBASIC2PFSTATE pThis, PCBS3REGCTX pStartCtx, int offAddPC,
350	unsigned uErrCd, uint64_t uCr2)
351	{
352	bs3CpuBasic2Pf_CompareSimpleCtx(pThis, (PBS3REGCTX)pStartCtx, offAddPC, X86_XCPT_PF, uErrCd, uCr2);
353	}
354
355	/**
356	* Checks the trap context for a simple \#UD trap.
357	*/
358	static void bs3CpuBasic2Pf_CompareSimpleUd(PBS3CPUBASIC2PFSTATE pThis, PCBS3REGCTX pStartCtx, int offAddPC)
359	{
360	bs3CpuBasic2Pf_CompareSimpleCtx(pThis, (PBS3REGCTX)pStartCtx, offAddPC, X86_XCPT_UD, 0, pStartCtx->cr2.u);
361	}
362
363
364	/**
365	* Restores all the paging entries from backup and flushes everything.
366	*/
367	static void bs3CpuBasic2Pf_FlushAll(void)
368	{
369	if ((g_uBs3CpuDetected & BS3CPU_TYPE_MASK) >= BS3CPU_80486)
370	{
371	uint32_t uCr4 = ASMGetCR4();
372	if (uCr4 & (X86_CR4_PGE \| X86_CR4_PCIDE))
373	{
374	ASMSetCR4(uCr4 & ~(X86_CR4_PGE \| X86_CR4_PCIDE));
375	ASMSetCR4(uCr4);
376	return;
377	}
378	}
379
380	ASMReloadCR3();
381	}
382
383
384	/**
385	* Restores all the paging entries from backup and flushes everything.
386	*
387	* @param pThis Test state data.
388	*/
389	static void bs3CpuBasic2Pf_RestoreFromBackups(PBS3CPUBASIC2PFSTATE pThis)
390	{
391	Bs3MemCpy(pThis->PgInfo.u.Legacy.pPte, &pThis->PteBackup, pThis->cbPteBackup);
392	Bs3MemCpy(pThis->PgInfo.u.Legacy.pPde, pThis->au64PdeBackup, pThis->cbPdeBackup);
393	if (pThis->PgInfo.cEntries > 2)
394	pThis->PgInfo.u.Pae.pPdpe->u = pThis->u64PdpteBackup;
395	if (pThis->PgInfo.cEntries > 3)
396	pThis->PgInfo.u.Pae.pPml4e->u = pThis->u64Pml4eBackup;
397	bs3CpuBasic2Pf_FlushAll();
398	}
399
400
401	/** @name BS3CPUBASIC2PFACCESSOR::pfnAccessor Implementations
402	* @{ */
403
404	static void bs3CpuBasic2Pf_DoExec(PBS3CPUBASIC2PFSTATE pThis, PBS3REGCTX pCtx, uint32_t fFlags, uint8_t bXcpt, uint8_t uPfErrCd)
405	{
406	uint8_t *pbOrgTest = pThis->pbOrgTest;
407	unsigned offEnd = fFlags & BS3CB2PFACC_F_DIRECT ? X86_PAGE_SIZE + 1 : X86_PAGE_SIZE + 2;
408	unsigned off = fFlags & BS3CB2PFACC_F_DIRECT ? offEnd - 1 : X86_PAGE_SIZE - 5;
409
410	for (; off < offEnd; off++)
411	{
412	/* Emit a little bit of code (using the original allocation mapping) and point pCtx to it. */
413	pbOrgTest[off + 0] = X86_OP_PRF_SIZE_ADDR;
414	pbOrgTest[off + 1] = X86_OP_PRF_SIZE_OP;
415	pbOrgTest[off + 2] = 0x90; /* NOP */
416	pbOrgTest[off + 3] = 0x0f; /* UD2 */
417	pbOrgTest[off + 4] = 0x0b;
418	pbOrgTest[off + 5] = 0xeb; /* JMP $-4 */
419	pbOrgTest[off + 6] = 0xfc;
420	switch (pThis->bMode & BS3_MODE_CODE_MASK)
421	{
422	default:
423	pCtx->rip.u = pThis->uTestAddr.u + off;
424	break;
425	case BS3_MODE_CODE_16:
426	Bs3SelSetup16BitCode(&Bs3GdteSpare01, pThis->uTestAddr.u32, pCtx->bCpl);
427	pCtx->rip.u = off;
428	pCtx->cs = BS3_SEL_SPARE_01 \| pCtx->bCpl;
429	break;
430	case BS3_MODE_CODE_V86:
431	/** @todo fix me. */
432	return;
433	}
434	//Bs3TestPrintf("cs:rip=%04x:%010RX64 iRing=%d\n", pCtx->cs, pCtx->rip.u, pCtx->bCpl);
435
436	Bs3TrapSetJmpAndRestore(pCtx, &pThis->TrapCtx);
437	//Bs3TestPrintf("off=%#06x bXcpt=%#x uErrCd=%#RX64\n", off, pThis->TrapCtx.bXcpt, pThis->TrapCtx.uErrCd);
438	if ( bXcpt != X86_XCPT_PF
439	\|\| ((fFlags & BS3CB2PFACC_F_PAGE_LEVEL) && off < X86_PAGE_SIZE - 4))
440	bs3CpuBasic2Pf_CompareSimpleUd(pThis, pCtx, 3);
441	else if (!(fFlags & BS3CB2PFACC_F_PAGE_LEVEL) \|\| off >= X86_PAGE_SIZE)
442	bs3CpuBasic2Pf_CompareSimplePf(pThis, pCtx, 0, uPfErrCd, pThis->uTestAddr.u + off);
443	else
444	bs3CpuBasic2Pf_CompareSimplePf(pThis, pCtx,
445	off + 3 == X86_PAGE_SIZE \|\| off + 4 == X86_PAGE_SIZE
446	? RT_MIN(X86_PAGE_SIZE, off + 3) - off : 0,
447	uPfErrCd, pThis->uTestAddr.u + RT_MIN(X86_PAGE_SIZE, off + 4));
448	}
449	}
450
451
452	static void bs3CpuBasic2Pf_SetCsEip(PBS3CPUBASIC2PFSTATE pThis, PBS3REGCTX pCtx, PCFNBS3CPUBASIC2PFTSTCODE pCode)
453	{
454	switch (pThis->bMode & BS3_MODE_CODE_MASK)
455	{
456	default:
457	pCtx->rip.u = (uintptr_t)pCode->pfn;
458	break;
459
460	case BS3_MODE_CODE_16:
461	{
462	uint32_t uFar16 = Bs3SelFlatCodeToProtFar16((uintptr_t)pCode->pfn);
463	pCtx->rip.u = (uint16_t)uFar16;
464	pCtx->cs = (uint16_t)(uFar16 >> 16) \| pCtx->bCpl;
465	pCtx->cs += (uint16_t)pCtx->bCpl << BS3_SEL_RING_SHIFT;
466	break;
467	}
468
469	case BS3_MODE_CODE_V86:
470	{
471	uint32_t uFar16 = Bs3SelFlatCodeToRealMode((uintptr_t)pCode->pfn);
472	pCtx->rip.u = (uint16_t)uFar16;
473	pCtx->cs = (uint16_t)(uFar16 >> 16);
474	break;
475	}
476	}
477	}
478
479
480	/**
481	* Test a simple load instruction around the edges of page two.
482	*
483	* @param pThis The test stat data.
484	* @param pCtx The test context.
485	* @param fFlags BS3CB2PFACC_F_XXX.
486	* @param bXcpt X86_XCPT_PF if this can cause \#PFs, otherwise
487	* X86_XCPT_UD.
488	* @param uPfErrCd The error code for \#PFs.
489	*/
490	static void bs3CpuBasic2Pf_DoMovLoad(PBS3CPUBASIC2PFSTATE pThis, PBS3REGCTX pCtx, uint32_t fFlags, uint8_t bXcpt, uint8_t uPfErrCd)
491	{
492	static uint64_t const s_uValue = UINT64_C(0x7c4d0114428d);
493	uint64_t uExpectRax;
494	unsigned i;
495
496	/*
497	* Adjust the incoming context and calculate our expections.
498	*/
499	bs3CpuBasic2Pf_SetCsEip(pThis, pCtx, &pThis->pCmnMode->MovLoad);
500	Bs3MemCpy(&pThis->ExpectCtx, pCtx, sizeof(pThis->ExpectCtx));
501	switch (pThis->bMode & BS3_MODE_CODE_MASK)
502	{
503	case BS3_MODE_CODE_16:
504	case BS3_MODE_CODE_V86:
505	uExpectRax = (uint16_t)s_uValue \| (pCtx->rax.u & UINT64_C(0xffffffffffff0000));
506	break;
507	case BS3_MODE_CODE_32:
508	uExpectRax = (uint32_t)s_uValue \| (pCtx->rax.u & UINT64_C(0xffffffff00000000));
509	break;
510	case BS3_MODE_CODE_64:
511	uExpectRax = s_uValue;
512	break;
513	}
514	if (uExpectRax == pCtx->rax.u)
515	pCtx->rax.u = ~pCtx->rax.u;
516
517	/*
518	* Make two approaches to the test page (the 2nd one):
519	* - i=0: Start on the 1st page and edge into the 2nd.
520	* - i=1: Start at the end of the 2nd page and edge off it and into the 3rd.
521	*/
522	for (i = 0; i < 2; i++)
523	{
524	unsigned off = fFlags & BS3CB2PFACC_F_DIRECT ? X86_PAGE_SIZE : X86_PAGE_SIZE * (i + 1) - pThis->cbAccess;
525	unsigned offEnd = fFlags & BS3CB2PFACC_F_DIRECT ? off + 1 : X86_PAGE_SIZE * (i + 1) + (i == 0 ? 8 : 7);
526
527	for (; off < offEnd; off++)
528	{
529	(uint64_t )&pThis->pbOrgTest[off] = s_uValue;
530	if (BS3_MODE_IS_16BIT_CODE(pThis->bMode))
531	pThis->ExpectCtx.rbx.u = pCtx->rbx.u = off;
532	else
533	pThis->ExpectCtx.rbx.u = pCtx->rbx.u = pThis->uTestAddr.u + off;
534
535	Bs3TrapSetJmpAndRestore(pCtx, &pThis->TrapCtx);
536	//Bs3TestPrintf("off=%#06x bXcpt=%#x uErrCd=%#RX64\n", off, pThis->TrapCtx.bXcpt, pThis->TrapCtx.uErrCd);
537
538	if ( bXcpt != X86_XCPT_PF
539	\|\| ((fFlags & BS3CB2PFACC_F_PAGE_LEVEL) && off >= X86_PAGE_SIZE * 2)
540	\|\| ((fFlags & BS3CB2PFACC_F_PAGE_LEVEL) && off <= X86_PAGE_SIZE - pThis->cbAccess) )
541	{
542	pThis->ExpectCtx.rax.u = uExpectRax;
543	bs3CpuBasic2Pf_CompareCtx(pThis, &pThis->ExpectCtx, pThis->pCmnMode->MovLoad.offUd2, X86_XCPT_UD, 0 /uErrCd/);
544	pThis->ExpectCtx.rax = pCtx->rax;
545	}
546	else
547	{
548	if (off < X86_PAGE_SIZE)
549	pThis->ExpectCtx.cr2.u = pThis->uTestAddr.u + X86_PAGE_SIZE;
550	else
551	pThis->ExpectCtx.cr2.u = pThis->uTestAddr.u + off;
552	bs3CpuBasic2Pf_CompareCtx(pThis, &pThis->ExpectCtx, 0 /cbPcAdjust/, bXcpt, uPfErrCd);
553	pThis->ExpectCtx.cr2 = pCtx->cr2;
554	}
555	}
556
557	if (fFlags & BS3CB2PFACC_F_DIRECT)
558	break;
559	}
560	}
561
562
563	/**
564	* Test a simple store instruction around the edges of page two.
565	*
566	* @param pThis The test stat data.
567	* @param pCtx The test context.
568	* @param fFlags BS3CB2PFACC_F_XXX.
569	* @param bXcpt X86_XCPT_PF if this can cause \#PFs, otherwise
570	* X86_XCPT_UD.
571	* @param uPfErrCd The error code for \#PFs.
572	*/
573	static void bs3CpuBasic2Pf_DoMovStore(PBS3CPUBASIC2PFSTATE pThis, PBS3REGCTX pCtx, uint32_t fFlags,
574	uint8_t bXcpt, uint8_t uPfErrCd)
575	{
576	static uint64_t const s_uValue = UINT64_C(0x3af45ead86a34a26);
577	static uint64_t const s_uValueFlipped = UINT64_C(0xc50ba152795cb5d9);
578	uint64_t const uRaxSaved = pCtx->rax.u;
579	uint64_t uExpectStored;
580	unsigned i;
581
582	/*
583	* Adjust the incoming context and calculate our expections.
584	*/
585	bs3CpuBasic2Pf_SetCsEip(pThis, pCtx, &pThis->pCmnMode->MovStore);
586	if ((pThis->bMode & BS3_MODE_CODE_MASK) != BS3_MODE_CODE_64)
587	pCtx->rax.u = (uint32_t)s_uValue; /* leave the upper part zero */
588	else
589	pCtx->rax.u = s_uValue;
590
591	Bs3MemCpy(&pThis->ExpectCtx, pCtx, sizeof(pThis->ExpectCtx));
592	switch (pThis->bMode & BS3_MODE_CODE_MASK)
593	{
594	case BS3_MODE_CODE_16:
595	case BS3_MODE_CODE_V86:
596	uExpectStored = (uint16_t)s_uValue \| (s_uValueFlipped & UINT64_C(0xffffffffffff0000));
597	break;
598	case BS3_MODE_CODE_32:
599	uExpectStored = (uint32_t)s_uValue \| (s_uValueFlipped & UINT64_C(0xffffffff00000000));
600	break;
601	case BS3_MODE_CODE_64:
602	uExpectStored = s_uValue;
603	break;
604	}
605
606	/*
607	* Make two approaches to the test page (the 2nd one):
608	* - i=0: Start on the 1st page and edge into the 2nd.
609	* - i=1: Start at the end of the 2nd page and edge off it and into the 3rd.
610	*/
611	for (i = 0; i < 2; i++)
612	{
613	unsigned off = fFlags & BS3CB2PFACC_F_DIRECT ? X86_PAGE_SIZE : X86_PAGE_SIZE * (i + 1) - pThis->cbAccess;
614	unsigned offEnd = fFlags & BS3CB2PFACC_F_DIRECT ? off + 1 : X86_PAGE_SIZE * (i + 1) + (i == 0 ? 8 : 7);
615	for (; off < offEnd; off++)
616	{
617	(uint64_t )&pThis->pbOrgTest[off] = s_uValueFlipped;
618	if (BS3_MODE_IS_16BIT_CODE(pThis->bMode))
619	pThis->ExpectCtx.rbx.u = pCtx->rbx.u = off;
620	else
621	pThis->ExpectCtx.rbx.u = pCtx->rbx.u = pThis->uTestAddr.u + off;
622
623	Bs3TrapSetJmpAndRestore(pCtx, &pThis->TrapCtx);
624	//Bs3TestPrintf("off=%#06x bXcpt=%#x uErrCd=%#RX64\n", off, pThis->TrapCtx.bXcpt, pThis->TrapCtx.uErrCd);
625
626	if ( bXcpt != X86_XCPT_PF
627	\|\| ((fFlags & BS3CB2PFACC_F_PAGE_LEVEL) && off >= X86_PAGE_SIZE * 2)
628	\|\| ((fFlags & BS3CB2PFACC_F_PAGE_LEVEL) && off <= X86_PAGE_SIZE - pThis->cbAccess) )
629	{
630	bs3CpuBasic2Pf_CompareCtx(pThis, &pThis->ExpectCtx, pThis->pCmnMode->MovStore.offUd2, X86_XCPT_UD, 0 /uErrCd/);
631	if ((uint64_t )&pThis->pbOrgTest[off] != uExpectStored)
632	Bs3TestFailedF("%u - %s: Stored %#RX64, expected %#RX64",
633	g_usBs3TestStep, "xxxx", (uint64_t )&pThis->pbOrgTest[off], uExpectStored);
634	}
635	else
636	{
637	if (off < X86_PAGE_SIZE)
638	pThis->ExpectCtx.cr2.u = pThis->uTestAddr.u + X86_PAGE_SIZE;
639	else
640	pThis->ExpectCtx.cr2.u = pThis->uTestAddr.u + off;
641	bs3CpuBasic2Pf_CompareCtx(pThis, &pThis->ExpectCtx, 0 /cbPcAdjust/, bXcpt, uPfErrCd);
642	pThis->ExpectCtx.cr2 = pCtx->cr2;
643	if ((uint64_t )&pThis->pbOrgTest[off] != s_uValueFlipped)
644	Bs3TestFailedF("%u - %s: #PF'ed store modified memory: %#RX64, expected %#RX64",
645	g_usBs3TestStep, "xxxx", (uint64_t )&pThis->pbOrgTest[off], s_uValueFlipped);
646
647	}
648	}
649
650	if (fFlags & BS3CB2PFACC_F_DIRECT)
651	break;
652	}
653
654	pCtx->rax.u = uRaxSaved;
655	}
656
657
658	/**
659	* Test a xchg instruction around the edges of page two.
660	*
661	* @param pThis The test stat data.
662	* @param pCtx The test context.
663	* @param fFlags BS3CB2PFACC_F_XXX.
664	* @param bXcpt X86_XCPT_PF if this can cause \#PFs, otherwise
665	* X86_XCPT_UD.
666	* @param uPfErrCd The error code for \#PFs.
667	*/
668	static void bs3CpuBasic2Pf_DoXchg(PBS3CPUBASIC2PFSTATE pThis, PBS3REGCTX pCtx, uint32_t fFlags, uint8_t bXcpt, uint8_t uPfErrCd)
669	{
670	static uint64_t const s_uValue = UINT64_C(0xea58699648e2f32c);
671	static uint64_t const s_uValueFlipped = UINT64_C(0x15a79669b71d0cd3);
672	uint64_t const uRaxSaved = pCtx->rax.u;
673	uint64_t uRaxIn;
674	uint64_t uExpectedRax;
675	uint64_t uExpectStored;
676	unsigned i;
677
678	/*
679	* Adjust the incoming context and calculate our expections.
680	*/
681	bs3CpuBasic2Pf_SetCsEip(pThis, pCtx, &pThis->pCmnMode->Xchg);
682	if ((pThis->bMode & BS3_MODE_CODE_MASK) != BS3_MODE_CODE_64)
683	uRaxIn = (uint32_t)s_uValue; /* leave the upper part zero */
684	else
685	uRaxIn = s_uValue;
686
687	Bs3MemCpy(&pThis->ExpectCtx, pCtx, sizeof(pThis->ExpectCtx));
688	switch (pThis->bMode & BS3_MODE_CODE_MASK)
689	{
690	case BS3_MODE_CODE_16:
691	case BS3_MODE_CODE_V86:
692	uExpectedRax = (uint16_t)s_uValueFlipped \| (uRaxIn & UINT64_C(0xffffffffffff0000));
693	uExpectStored = (uint16_t)s_uValue \| (s_uValueFlipped & UINT64_C(0xffffffffffff0000));
694	break;
695	case BS3_MODE_CODE_32:
696	uExpectedRax = (uint32_t)s_uValueFlipped \| (uRaxIn & UINT64_C(0xffffffff00000000));
697	uExpectStored = (uint32_t)s_uValue \| (s_uValueFlipped & UINT64_C(0xffffffff00000000));
698	break;
699	case BS3_MODE_CODE_64:
700	uExpectedRax = s_uValueFlipped;
701	uExpectStored = s_uValue;
702	break;
703	}
704
705	/*
706	* Make two approaches to the test page (the 2nd one):
707	* - i=0: Start on the 1st page and edge into the 2nd.
708	* - i=1: Start at the end of the 2nd page and edge off it and into the 3rd.
709	*/
710	for (i = 0; i < 2; i++)
711	{
712	unsigned off = fFlags & BS3CB2PFACC_F_DIRECT ? X86_PAGE_SIZE : X86_PAGE_SIZE * (i + 1) - pThis->cbAccess;
713	unsigned offEnd = fFlags & BS3CB2PFACC_F_DIRECT ? off + 1 : X86_PAGE_SIZE * (i + 1) + (i == 0 ? 8 : 7);
714	for (; off < offEnd; off++)
715	{
716	(uint64_t )&pThis->pbOrgTest[off] = s_uValueFlipped;
717	pCtx->rax.u = uRaxIn;
718	if (BS3_MODE_IS_16BIT_CODE(pThis->bMode))
719	pThis->ExpectCtx.rbx.u = pCtx->rbx.u = off;
720	else
721	pThis->ExpectCtx.rbx.u = pCtx->rbx.u = pThis->uTestAddr.u + off;
722
723	Bs3TrapSetJmpAndRestore(pCtx, &pThis->TrapCtx);
724	//Bs3TestPrintf("off=%#06x bXcpt=%#x uErrCd=%#RX64\n", off, pThis->TrapCtx.bXcpt, pThis->TrapCtx.uErrCd);
725
726	if ( bXcpt != X86_XCPT_PF
727	\|\| ((fFlags & BS3CB2PFACC_F_PAGE_LEVEL) && off >= X86_PAGE_SIZE * 2)
728	\|\| ((fFlags & BS3CB2PFACC_F_PAGE_LEVEL) && off <= X86_PAGE_SIZE - pThis->cbAccess) )
729	{
730	pThis->ExpectCtx.rax.u = uExpectedRax;
731	bs3CpuBasic2Pf_CompareCtx(pThis, &pThis->ExpectCtx, pThis->pCmnMode->Xchg.offUd2, X86_XCPT_UD, 0 /uErrCd/);
732	if ((uint64_t )&pThis->pbOrgTest[off] != uExpectStored)
733	Bs3TestFailedF("%u - %s: Stored %#RX64, expected %#RX64",
734	g_usBs3TestStep, "xxxx", (uint64_t )&pThis->pbOrgTest[off], uExpectStored);
735	}
736	else
737	{
738	pThis->ExpectCtx.rax.u = uRaxIn;
739	if (off < X86_PAGE_SIZE)
740	pThis->ExpectCtx.cr2.u = pThis->uTestAddr.u + X86_PAGE_SIZE;
741	else
742	pThis->ExpectCtx.cr2.u = pThis->uTestAddr.u + off;
743	bs3CpuBasic2Pf_CompareCtx(pThis, &pThis->ExpectCtx, 0 /cbPcAdjust/, bXcpt, uPfErrCd);
744	pThis->ExpectCtx.cr2 = pCtx->cr2;
745	if ((uint64_t )&pThis->pbOrgTest[off] != s_uValueFlipped)
746	Bs3TestFailedF("%u - %s: #PF'ed store modified memory: %#RX64, expected %#RX64",
747	g_usBs3TestStep, "xxxx", (uint64_t )&pThis->pbOrgTest[off], s_uValueFlipped);
748	}
749	}
750
751	if (fFlags & BS3CB2PFACC_F_DIRECT)
752	break;
753	}
754
755	pCtx->rax.u = uRaxSaved;
756	}
757
758
759	/**
760	* Test a cmpxchg instruction around the edges of page two.
761	*
762	* @param pThis The test stat data.
763	* @param pCtx The test context.
764	* @param fFlags BS3CB2PFACC_F_XXX.
765	* @param bXcpt X86_XCPT_PF if this can cause \#PFs, otherwise
766	* X86_XCPT_UD.
767	* @param uPfErrCd The error code for \#PFs.
768	* @param fMissmatch Whether to fail and not store (@c true), or succeed
769	* and do the store.
770	*/
771	static void bs3CpuBasic2Pf_DoCmpXchg(PBS3CPUBASIC2PFSTATE pThis, PBS3REGCTX pCtx, uint32_t fFlags,
772	uint8_t bXcpt, uint8_t uPfErrCd, bool fMissmatch)
773	{
774	static uint64_t const s_uValue = UINT64_C(0xea58699648e2f32c);
775	static uint64_t const s_uValueFlipped = UINT64_C(0x15a79669b71d0cd3);
776	static uint64_t const s_uValueOther = UINT64_C(0x2171239bcb044c81);
777	uint64_t const uRaxSaved = pCtx->rax.u;
778	uint64_t const uRcxSaved = pCtx->rcx.u;
779	uint64_t uRaxIn;
780	uint64_t uExpectedRax;
781	uint32_t uExpectedFlags;
782	uint64_t uExpectStored;
783	unsigned i;
784
785	/*
786	* Adjust the incoming context and calculate our expections.
787	* Hint: CMPXCHG [xBX],xCX ; xAX compare and update implicit, ZF set to !fMissmatch.
788	*/
789	bs3CpuBasic2Pf_SetCsEip(pThis, pCtx, &pThis->pCmnMode->CmpXchg);
790	if ((pThis->bMode & BS3_MODE_CODE_MASK) != BS3_MODE_CODE_64)
791	{
792	uRaxIn = (uint32_t)(fMissmatch ? s_uValueOther : s_uValueFlipped); /* leave the upper part zero */
793	pCtx->rcx.u = (uint32_t)s_uValue; /* ditto */
794	}
795	else
796	{
797	uRaxIn = fMissmatch ? s_uValueOther : s_uValueFlipped;
798	pCtx->rcx.u = s_uValue;
799	}
800	if (fMissmatch)
801	pCtx->rflags.u32 \|= X86_EFL_ZF;
802	else
803	pCtx->rflags.u32 &= ~X86_EFL_ZF;
804
805	Bs3MemCpy(&pThis->ExpectCtx, pCtx, sizeof(pThis->ExpectCtx));
806	uExpectedFlags = pCtx->rflags.u32 & ~(X86_EFL_CF \| X86_EFL_PF \| X86_EFL_AF \| X86_EFL_SF \| X86_EFL_OF \| X86_EFL_ZF);
807	switch (pThis->bMode & BS3_MODE_CODE_MASK)
808	{
809	case BS3_MODE_CODE_16:
810	case BS3_MODE_CODE_V86:
811	uExpectedRax = (uint16_t)s_uValueFlipped \| (uRaxIn & UINT64_C(0xffffffffffff0000));
812	uExpectStored = (uint16_t)s_uValue \| (s_uValueFlipped & UINT64_C(0xffffffffffff0000));
813	uExpectedFlags \|= !fMissmatch ? X86_EFL_ZF \| X86_EFL_PF : X86_EFL_AF;
814	break;
815	case BS3_MODE_CODE_32:
816	uExpectedRax = (uint32_t)s_uValueFlipped \| (uRaxIn & UINT64_C(0xffffffff00000000));
817	uExpectStored = (uint32_t)s_uValue \| (s_uValueFlipped & UINT64_C(0xffffffff00000000));
818	uExpectedFlags \|= !fMissmatch ? X86_EFL_ZF \| X86_EFL_PF : X86_EFL_AF;
819	break;
820	case BS3_MODE_CODE_64:
821	uExpectedRax = s_uValueFlipped;
822	uExpectStored = s_uValue;
823	uExpectedFlags \|= !fMissmatch ? X86_EFL_ZF \| X86_EFL_PF : X86_EFL_AF;
824	break;
825	}
826	if (fMissmatch)
827	uExpectStored = s_uValueFlipped;
828
829	/*
830	* Make two approaches to the test page (the 2nd one):
831	* - i=0: Start on the 1st page and edge into the 2nd.
832	* - i=1: Start at the end of the 2nd page and edge off it and into the 3rd.
833	*/
834	for (i = 0; i < 2; i++)
835	{
836	unsigned off = fFlags & BS3CB2PFACC_F_DIRECT ? X86_PAGE_SIZE : X86_PAGE_SIZE * (i + 1) - pThis->cbAccess;
837	unsigned offEnd = fFlags & BS3CB2PFACC_F_DIRECT ? off + 1 : X86_PAGE_SIZE * (i + 1) + (i == 0 ? 8 : 7);
838	for (; off < offEnd; off++)
839	{
840	(uint64_t )&pThis->pbOrgTest[off] = s_uValueFlipped;
841	pCtx->rax.u = uRaxIn;
842	if (BS3_MODE_IS_16BIT_CODE(pThis->bMode))
843	pThis->ExpectCtx.rbx.u = pCtx->rbx.u = off;
844	else
845	pThis->ExpectCtx.rbx.u = pCtx->rbx.u = pThis->uTestAddr.u + off;
846
847	Bs3TrapSetJmpAndRestore(pCtx, &pThis->TrapCtx);
848	//Bs3TestPrintf("off=%#06x bXcpt=%#x uErrCd=%#RX64\n", off, pThis->TrapCtx.bXcpt, pThis->TrapCtx.uErrCd);
849
850	if ( bXcpt != X86_XCPT_PF
851	\|\| ((fFlags & BS3CB2PFACC_F_PAGE_LEVEL) && off >= X86_PAGE_SIZE * 2)
852	\|\| ((fFlags & BS3CB2PFACC_F_PAGE_LEVEL) && off <= X86_PAGE_SIZE - pThis->cbAccess) )
853	{
854	pThis->ExpectCtx.rax.u = uExpectedRax;
855	pThis->ExpectCtx.rflags.u32 = uExpectedFlags;
856	bs3CpuBasic2Pf_CompareCtx(pThis, &pThis->ExpectCtx, pThis->pCmnMode->CmpXchg.offUd2, X86_XCPT_UD, 0 /uErrCd/);
857	if ((uint64_t )&pThis->pbOrgTest[off] != uExpectStored)
858	Bs3TestFailedF("%u - %s: Stored %#RX64, expected %#RX64",
859	g_usBs3TestStep, "xxxx", (uint64_t )&pThis->pbOrgTest[off], uExpectStored);
860	}
861	else
862	{
863	pThis->ExpectCtx.rax.u = uRaxIn;
864	pThis->ExpectCtx.rflags = pCtx->rflags;
865	if (off < X86_PAGE_SIZE)
866	pThis->ExpectCtx.cr2.u = pThis->uTestAddr.u + X86_PAGE_SIZE;
867	else
868	pThis->ExpectCtx.cr2.u = pThis->uTestAddr.u + off;
869	bs3CpuBasic2Pf_CompareCtx(pThis, &pThis->ExpectCtx, 0 /cbPcAdjust/, bXcpt, uPfErrCd);
870	pThis->ExpectCtx.cr2 = pCtx->cr2;
871	if ((uint64_t )&pThis->pbOrgTest[off] != s_uValueFlipped)
872	Bs3TestFailedF("%u - %s: #PF'ed store modified memory: %#RX64, expected %#RX64",
873	g_usBs3TestStep, "xxxx", (uint64_t )&pThis->pbOrgTest[off], s_uValueFlipped);
874	}
875	}
876
877	if (fFlags & BS3CB2PFACC_F_DIRECT)
878	break;
879	}
880
881	pCtx->rax.u = uRaxSaved;
882	pCtx->rcx.u = uRcxSaved;
883	}
884
885
886	static void bs3CpuBasic2Pf_DoCmpXchgMiss(PBS3CPUBASIC2PFSTATE pThis, PBS3REGCTX pCtx, uint32_t fFlags,
887	uint8_t bXcpt, uint8_t uPfErrCd)
888	{
889	bs3CpuBasic2Pf_DoCmpXchg(pThis, pCtx, fFlags, bXcpt, uPfErrCd, true /fMissmatch/ );
890	}
891
892
893	static void bs3CpuBasic2Pf_DoCmpXchgMatch(PBS3CPUBASIC2PFSTATE pThis, PBS3REGCTX pCtx, uint32_t fFlags,
894	uint8_t bXcpt, uint8_t uPfErrCd)
895	{
896	bs3CpuBasic2Pf_DoCmpXchg(pThis, pCtx, fFlags, bXcpt, uPfErrCd , false /fMissmatch/ );
897	}
898
899
900	/**
901	* @interface_method_impl{BS3CPUBASIC2PFACCESSOR,pfnAccessor,
902	* DIV [MEM=0] for checking the accessed bit}
903	*/
904	static void bs3CpuBasic2Pf_DoDivByZero(PBS3CPUBASIC2PFSTATE pThis, PBS3REGCTX pCtx, uint32_t fFlags,
905	uint8_t bXcpt, uint8_t uPfErrCd)
906	{
907	static uint64_t const s_uFiller = UINT64_C(0x9856703711f4069e);
908	uint64_t uZeroAndFill;
909	unsigned i;
910
911	/*
912	* Adjust the incoming context and calculate our expections.
913	*/
914	bs3CpuBasic2Pf_SetCsEip(pThis, pCtx, &pThis->pCmnMode->DivMem);
915
916	Bs3MemCpy(&pThis->ExpectCtx, pCtx, sizeof(pThis->ExpectCtx));
917	switch (pThis->bMode & BS3_MODE_CODE_MASK)
918	{
919	case BS3_MODE_CODE_16:
920	case BS3_MODE_CODE_V86:
921	uZeroAndFill = s_uFiller & UINT64_C(0xffffffffffff0000);
922	break;
923	case BS3_MODE_CODE_32:
924	uZeroAndFill = s_uFiller & UINT64_C(0xffffffff00000000);
925	break;
926	case BS3_MODE_CODE_64:
927	uZeroAndFill = 0;
928	break;
929	}
930
931	/*
932	* Make two approaches to the test page (the 2nd one):
933	* - i=0: Start on the 1st page and edge into the 2nd.
934	* - i=1: Start at the end of the 2nd page and edge off it and into the 3rd.
935	*/
936	for (i = 0; i < 2; i++)
937	{
938	unsigned off = fFlags & BS3CB2PFACC_F_DIRECT ? X86_PAGE_SIZE : X86_PAGE_SIZE * (i + 1) - pThis->cbAccess;
939	unsigned offEnd = fFlags & BS3CB2PFACC_F_DIRECT ? off + 1 : X86_PAGE_SIZE * (i + 1) + (i == 0 ? 8 : 7);
940	for (; off < offEnd; off++)
941	{
942	(uint64_t )&pThis->pbOrgTest[off] = uZeroAndFill;
943	if (BS3_MODE_IS_16BIT_CODE(pThis->bMode))
944	pThis->ExpectCtx.rbx.u = pCtx->rbx.u = off;
945	else
946	pThis->ExpectCtx.rbx.u = pCtx->rbx.u = pThis->uTestAddr.u + off;
947
948	Bs3TrapSetJmpAndRestore(pCtx, &pThis->TrapCtx);
949	//if (pThis->bMode == BS3_MODE_PP16_32) Bs3TestPrintf("off=%#06x bXcpt=%#x uErrCd=%#RX64\n", off, pThis->TrapCtx.bXcpt, pThis->TrapCtx.uErrCd);
950
951	if ( bXcpt != X86_XCPT_PF
952	\|\| ((fFlags & BS3CB2PFACC_F_PAGE_LEVEL) && off >= X86_PAGE_SIZE * 2)
953	\|\| ((fFlags & BS3CB2PFACC_F_PAGE_LEVEL) && off <= X86_PAGE_SIZE - pThis->cbAccess) )
954	{
955	bs3CpuBasic2Pf_CompareCtx(pThis, &pThis->ExpectCtx, 0 /cbPcAdjust/, X86_XCPT_DE, 0 /uErrCd/);
956	if ((uint64_t )&pThis->pbOrgTest[off] != uZeroAndFill)
957	Bs3TestFailedF("%u - %s: Modified source op: %#RX64, expected %#RX64",
958	g_usBs3TestStep, "xxxx", (uint64_t )&pThis->pbOrgTest[off], uZeroAndFill);
959	}
960	else
961	{
962	if (off < X86_PAGE_SIZE)
963	pThis->ExpectCtx.cr2.u = pThis->uTestAddr.u + X86_PAGE_SIZE;
964	else
965	pThis->ExpectCtx.cr2.u = pThis->uTestAddr.u + off;
966	bs3CpuBasic2Pf_CompareCtx(pThis, &pThis->ExpectCtx, 0 /cbPcAdjust/, bXcpt, uPfErrCd);
967	pThis->ExpectCtx.cr2 = pCtx->cr2;
968	if ((uint64_t )&pThis->pbOrgTest[off] != uZeroAndFill)
969	Bs3TestFailedF("%u - %s: Modified source op: %#RX64, expected %#RX64",
970	g_usBs3TestStep, "xxxx", (uint64_t )&pThis->pbOrgTest[off], uZeroAndFill);
971	}
972	}
973
974	if (fFlags & BS3CB2PFACC_F_DIRECT)
975	break;
976	}
977	}
978
979
980	static BS3CPUBASIC2PFACCESSOR const g_aAccessors[] =
981	{
982	{ "DoExec", bs3CpuBasic2Pf_DoExec, X86_TRAP_PF_ID, X86_XCPT_UD },
983	{ "DoMovLoad", bs3CpuBasic2Pf_DoMovLoad, 0, X86_XCPT_UD },
984	{ "DoMovStore", bs3CpuBasic2Pf_DoMovStore, X86_TRAP_PF_RW, X86_XCPT_UD },
985	{ "DoXchg", bs3CpuBasic2Pf_DoXchg, X86_TRAP_PF_RW, X86_XCPT_UD },
986	{ "DoCmpXchgMiss", bs3CpuBasic2Pf_DoCmpXchgMiss, X86_TRAP_PF_RW, X86_XCPT_UD },
987	{ "DoCmpXhcgMatch", bs3CpuBasic2Pf_DoCmpXchgMatch, X86_TRAP_PF_RW, X86_XCPT_UD },
988	{ "DoDivByZero", bs3CpuBasic2Pf_DoDivByZero, 0, X86_XCPT_DE },
989	};
990
991	/** @} */
992
993
994	/** @name BS3CPUBASIC2PFMODPT::pfnModify implementations.
995	* @{ */
996
997
998	static void bs3CpuBasic2Pf_ClearMask(PBS3CPUBASIC2PFSTATE pThis, unsigned iStore, PCBS3CPUBASIC2PFMODPT pEntry,
999	uint32_t fClearMask, uint32_t fSetMask)
1000	{
1001	if (pThis->PgInfo.cbEntry == 4)
1002	{
1003	uint32_t const uOrg = pThis->PteBackup.Legacy[1];
1004	uint32_t uNew = ((uOrg & ~fClearMask) \| fSetMask) & ~(uint32_t)pEntry->uModifyArg;
1005	uint32_t const uOld = pThis->PgInfo.u.Legacy.pPte[1].u;
1006	g_aStoreMethods[iStore].pfnStore(pThis->PgInfo.u.Legacy.pPte + 1, uNew, uOld);
1007	}
1008	else
1009	{
1010	uint64_t const uOrg = pThis->PteBackup.Pae[1];
1011	uint64_t uNew = ((uOrg & ~(uint64_t)fClearMask) \| fSetMask) & ~(uint64_t)pEntry->uModifyArg;
1012	uint64_t const uOld = pThis->PgInfo.u.Pae.pPte[1].u;
1013
1014	g_aStoreMethods[iStore].pfnStore(&pThis->PgInfo.u.Pae.pPte[1].au32[0], (uint32_t)uNew, (uint32_t)uOld);
1015	if ((uint32_t)(uNew >> 32) != (uint32_t)(uOld >> 32))
1016	g_aStoreMethods[iStore].pfnStore(&pThis->PgInfo.u.Pae.pPte[1].au32[1],
1017	(uint32_t)(uNew >> 32), (uint32_t)(uOld >> 32));
1018	}
1019	}
1020
1021	static void bs3CpuBasic2Pf_SetBit(PBS3CPUBASIC2PFSTATE pThis, unsigned iStore, PCBS3CPUBASIC2PFMODPT pEntry,
1022	uint32_t fClearMask, uint32_t fSetMask)
1023	{
1024	if (pThis->PgInfo.cbEntry == 4)
1025	{
1026	uint32_t const uOrg = pThis->PteBackup.Legacy[1];
1027	uint32_t uNew = (uOrg & ~fClearMask) \| fSetMask \| RT_BIT_32(pEntry->uModifyArg);
1028	uint32_t const uOld = pThis->PgInfo.u.Legacy.pPte[1].u;
1029	g_aStoreMethods[iStore].pfnStore(pThis->PgInfo.u.Legacy.pPte + 1, uNew, uOld);
1030	}
1031	else
1032	{
1033	uint64_t const uOrg = pThis->PteBackup.Pae[1];
1034	uint64_t uNew = ((uOrg & ~(uint64_t)fClearMask) \| fSetMask) \| RT_BIT_64(pEntry->uModifyArg);
1035	uint64_t const uOld = pThis->PgInfo.u.Pae.pPte[1].u;
1036
1037	if (pEntry->uModifyArg < 32 \|\| (uint32_t)uNew != (uint32_t)uOld)
1038	g_aStoreMethods[iStore].pfnStore(&pThis->PgInfo.u.Pae.pPte[1].au32[0], (uint32_t)uNew, (uint32_t)uOld);
1039	if (pEntry->uModifyArg >= 32 \|\| (uint32_t)(uNew >> 32) != (uint32_t)(uOld >> 32))
1040	g_aStoreMethods[iStore].pfnStore(&pThis->PgInfo.u.Pae.pPte[1].au32[1],
1041	(uint32_t)(uNew >> 32), (uint32_t)(uOld >> 32));
1042	}
1043	}
1044
1045	static void bs3CpuBasic2Pf_NoChange(PBS3CPUBASIC2PFSTATE pThis, unsigned iStore, PCBS3CPUBASIC2PFMODPT pEntry,
1046	uint32_t fClearMask, uint32_t fSetMask)
1047	{
1048	if (pThis->PgInfo.cbEntry == 4)
1049	{
1050	uint32_t const uOrg = pThis->PteBackup.Legacy[1];
1051	uint32_t uNew = (uOrg & ~fClearMask) \| fSetMask;
1052	uint32_t const uOld = pThis->PgInfo.u.Legacy.pPte[1].u;
1053	if (uNew != uOld)
1054	g_aStoreMethods[iStore].pfnStore(&pThis->PgInfo.u.Legacy.pPte[1], uNew, uOld);
1055	}
1056	else
1057	{
1058	uint64_t const uOrg = pThis->PteBackup.Pae[1];
1059	uint64_t uNew = (uOrg & ~(uint64_t)fClearMask) \| fSetMask;
1060	uint64_t const uOld = pThis->PgInfo.u.Pae.pPte[1].u;
1061	if (uNew != uOld)
1062	{
1063	if ((uint32_t)uNew != (uint32_t)uOld)
1064	g_aStoreMethods[iStore].pfnStore(&pThis->PgInfo.u.Pae.pPte[1].au32[0], (uint32_t)uNew, (uint32_t)uOld);
1065	if ((uint32_t)(uNew >> 32) != (uint32_t)(uOld >> 32))
1066	g_aStoreMethods[iStore].pfnStore(&pThis->PgInfo.u.Pae.pPte[1].au32[1],
1067	(uint32_t)(uNew >> 32), (uint32_t)(uOld >> 32));
1068	}
1069	}
1070	}
1071
1072	/** @} */
1073
1074
1075	/** @name BS3CPUBASIC2PFMODPT::pfnApplicable implementations.
1076	* @{ */
1077
1078	static bool bs3CpuBasic2Pf_IsPteBitReserved(PBS3CPUBASIC2PFSTATE pThis, PCBS3CPUBASIC2PFMODPT pEntry)
1079	{
1080	if (pThis->PgInfo.cbEntry == 8)
1081	{
1082	/* Bits 52..63 or 62 (NXE=1). */
1083	if (pThis->PgInfo.cEntries == 3)
1084	{
1085	if ((uint32_t)(pEntry->uModifyArg - 52U) < (uint32_t)(12 - pThis->fNxe))
1086	return true;
1087	}
1088	else if (pEntry->uModifyArg == 63 && !pThis->fNxe)
1089	return true;
1090
1091	/* Reserved physical address bits. */
1092	if (pEntry->uModifyArg < 52)
1093	{
1094	if ((uint32_t)pEntry->uModifyArg >= (uint32_t)pThis->cBitsPhysWidth)
1095	return true;
1096	}
1097	}
1098	return false;
1099	}
1100
1101	static bool bs3CpuBasic2Pf_IsPteBitSoftwareUsable(PBS3CPUBASIC2PFSTATE pThis, PCBS3CPUBASIC2PFMODPT pEntry)
1102	{
1103	if (pThis->PgInfo.cbEntry == 8)
1104	{
1105	if (pThis->PgInfo.cEntries != 3)
1106	{
1107	if ((uint32_t)(pEntry->uModifyArg - 52U) < (uint32_t)11)
1108	return true;
1109	}
1110	}
1111	return false;
1112	}
1113
1114
1115	static bool bs3CpuBasic2Pf_IsNxe(PBS3CPUBASIC2PFSTATE pThis, PCBS3CPUBASIC2PFMODPT pEntry)
1116	{
1117	return pThis->fNxe && pThis->PgInfo.cbEntry == 8;
1118	}
1119
1120	/** @} */
1121
1122
1123	static const BS3CPUBASIC2PFMODPT g_aPteWorkers[] =
1124	{
1125	/* { pszName, P U W NX RSV ModiyfArg pfnModify, pfnApplicable }, */
1126	{ "org", 1, 1, 1, 0, 0, 0, bs3CpuBasic2Pf_NoChange, NULL },
1127	{ "!US", 1, 0, 1, 0, 0, X86_PTE_US, bs3CpuBasic2Pf_ClearMask, NULL },
1128	{ "!RW", 1, 1, 0, 0, 0, X86_PTE_RW, bs3CpuBasic2Pf_ClearMask, NULL },
1129	{ "!RW+!US", 1, 0, 0, 0, 0, X86_PTE_RW \| X86_PTE_US, bs3CpuBasic2Pf_ClearMask, NULL },
1130	{ "!P", 0, 0, 0, 0, 0, X86_PTE_P, bs3CpuBasic2Pf_ClearMask, NULL },
1131	{ "NX", 1, 1, 1, 1, 0, 63, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsNxe },
1132	{ "RSVPH[32]", 0, 0, 0, 0, 1, 32, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1133	{ "RSVPH[33]", 0, 0, 0, 0, 1, 33, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1134	{ "RSVPH[34]", 0, 0, 0, 0, 1, 34, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1135	{ "RSVPH[35]", 0, 0, 0, 0, 1, 35, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1136	{ "RSVPH[36]", 0, 0, 0, 0, 1, 36, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1137	{ "RSVPH[37]", 0, 0, 0, 0, 1, 37, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1138	{ "RSVPH[38]", 0, 0, 0, 0, 1, 38, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1139	{ "RSVPH[39]", 0, 0, 0, 0, 1, 39, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1140	{ "RSVPH[40]", 0, 0, 0, 0, 1, 40, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1141	{ "RSVPH[41]", 0, 0, 0, 0, 1, 41, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1142	{ "RSVPH[42]", 0, 0, 0, 0, 1, 42, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1143	{ "RSVPH[43]", 0, 0, 0, 0, 1, 43, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1144	{ "RSVPH[44]", 0, 0, 0, 0, 1, 44, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1145	{ "RSVPH[45]", 0, 0, 0, 0, 1, 45, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1146	{ "RSVPH[46]", 0, 0, 0, 0, 1, 46, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1147	{ "RSVPH[47]", 0, 0, 0, 0, 1, 47, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1148	{ "RSVPH[48]", 0, 0, 0, 0, 1, 48, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1149	{ "RSVPH[49]", 0, 0, 0, 0, 1, 49, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1150	{ "RSVPH[50]", 0, 0, 0, 0, 1, 50, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1151	{ "RSVPH[51]", 0, 0, 0, 0, 1, 51, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1152	{ "RSV[52]", 0, 0, 0, 0, 1, 52, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1153	{ "RSV[53]", 0, 0, 0, 0, 1, 53, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1154	{ "RSV[54]", 0, 0, 0, 0, 1, 54, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1155	{ "RSV[55]", 0, 0, 0, 0, 1, 55, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1156	{ "RSV[56]", 0, 0, 0, 0, 1, 56, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1157	{ "RSV[57]", 0, 0, 0, 0, 1, 57, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1158	{ "RSV[58]", 0, 0, 0, 0, 1, 58, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1159	{ "RSV[59]", 0, 0, 0, 0, 1, 59, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1160	{ "RSV[60]", 0, 0, 0, 0, 1, 60, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1161	{ "RSV[61]", 0, 0, 0, 0, 1, 61, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1162	{ "RSV[62]", 0, 0, 0, 0, 1, 62, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1163	{ "RSV[62]", 0, 0, 0, 0, 1, 62, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1164	{ "RSV[63]", 0, 0, 0, 0, 1, 63, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitReserved },
1165	{ "!RSV[52]", 1, 1, 1, 0, 0, 52, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitSoftwareUsable },
1166	{ "!RSV[53]", 1, 1, 1, 0, 0, 53, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitSoftwareUsable },
1167	{ "!RSV[54]", 1, 1, 1, 0, 0, 54, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitSoftwareUsable },
1168	{ "!RSV[55]", 1, 1, 1, 0, 0, 55, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitSoftwareUsable },
1169	{ "!RSV[56]", 1, 1, 1, 0, 0, 56, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitSoftwareUsable },
1170	{ "!RSV[57]", 1, 1, 1, 0, 0, 57, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitSoftwareUsable },
1171	{ "!RSV[58]", 1, 1, 1, 0, 0, 58, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitSoftwareUsable },
1172	{ "!RSV[59]", 1, 1, 1, 0, 0, 59, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitSoftwareUsable },
1173	{ "!RSV[60]", 1, 1, 1, 0, 0, 60, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitSoftwareUsable },
1174	{ "!RSV[61]", 1, 1, 1, 0, 0, 61, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitSoftwareUsable },
1175	{ "!RSV[62]", 1, 1, 1, 0, 0, 62, bs3CpuBasic2Pf_SetBit, bs3CpuBasic2Pf_IsPteBitSoftwareUsable },
1176
1177	};
1178
1179
1180	/**
1181	* Worker for bs3CpuBasic2_RaiseXcpt0e_c32 that does the actual testing.
1182	*
1183	* Caller does all the cleaning up.
1184	*
1185	* @returns Error count.
1186	* @param pThis Test state data.
1187	* @param fNxe Whether NX is enabled.
1188	*/
1189	static uint8_t bs3CpuBasic2_RaiseXcpt0eWorker(PBS3CPUBASIC2PFSTATE register pThis, bool const fWp, bool const fNxe)
1190	{
1191	unsigned iLevel;
1192	unsigned iRing;
1193	unsigned iStore;
1194	unsigned iAccessor;
1195	unsigned iOuter;
1196	unsigned cPml4Tests;
1197	unsigned cPdPtrTests;
1198	uint32_t const fPfIdMask = fNxe ? UINT32_MAX : ~X86_TRAP_PF_ID;
1199	BS3REGCTX aCtxts[4];
1200
1201	pThis->fWp = fWp;
1202	pThis->fNxe = fNxe;
1203
1204	/** @todo figure out V8086 testing. */
1205	if ((pThis->bMode & BS3_MODE_CODE_MASK) == BS3_MODE_CODE_V86)
1206	return BS3TESTDOMODE_SKIPPED;
1207
1208
1209	/* paranoia: Touch the various big stack structures to ensure the compiler has allocated stack for them. */
1210	for (iRing = 0; iRing < RT_ELEMENTS(aCtxts); iRing++)
1211	Bs3MemZero(&aCtxts[iRing], sizeof(aCtxts[iRing]));
1212
1213	/*
1214	* Set up a few contexts for testing this stuff.
1215	*/
1216	Bs3RegCtxSaveEx(&aCtxts[0], pThis->bMode, 2048);
1217	for (iRing = 1; iRing < 4; iRing++)
1218	{
1219	aCtxts[iRing] = aCtxts[0];
1220	Bs3RegCtxConvertToRingX(&aCtxts[iRing], iRing);
1221	}
1222
1223	if (!BS3_MODE_IS_16BIT_CODE(pThis->bMode))
1224	{
1225	for (iRing = 0; iRing < 4; iRing++)
1226	aCtxts[iRing].rbx.u = pThis->uTestAddr.u;
1227	}
1228	else
1229	{
1230	for (iRing = 0; iRing < 4; iRing++)
1231	{
1232	aCtxts[iRing].ds = pThis->uSel16TestData;
1233	aCtxts[iRing].rbx.u = 0;
1234	}
1235	}
1236
1237	/*
1238	* Check basic operation:
1239	*/
1240	for (iRing = 0; iRing < 4; iRing++)
1241	for (iAccessor = 0; iAccessor < RT_ELEMENTS(g_aAccessors); iAccessor++)
1242	g_aAccessors[iAccessor].pfnAccessor(pThis, &aCtxts[iRing], BS3CB2PFACC_F_PAGE_LEVEL, X86_XCPT_UD, UINT8_MAX);
1243
1244	/*
1245	* Some PTE checks. We only mess with the 2nd page.
1246	*/
1247	for (iOuter = 0; iOuter < 2; iOuter++)
1248	{
1249	uint32_t const fAccessor = (iOuter == 0 ? BS3CB2PFACC_F_DIRECT : 0) \| BS3CB2PFACC_F_PAGE_LEVEL;
1250	unsigned iPteWrk;
1251
1252	bs3CpuBasic2Pf_FlushAll();
1253	for (iPteWrk = 0; iPteWrk < RT_ELEMENTS(g_aPteWorkers); iPteWrk++)
1254	{
1255	BS3CPUBASIC2PFMODPT EffWrk;
1256	const BS3CPUBASIC2PFMODPT *pPteWrk = &g_aPteWorkers[iPteWrk];
1257	if (pPteWrk->pfnApplicable && !pPteWrk->pfnApplicable(pThis, pPteWrk))
1258	continue;
1259
1260	pThis->pszPteWorker = pPteWrk->pszName;
1261
1262	EffWrk = *pPteWrk;
1263
1264	#if 1
1265	/*
1266	* Do the modification once, then test all different accesses
1267	* without flushing the TLB or anything in-between.
1268	*/
1269	for (iStore = 0; iStore < RT_ELEMENTS(g_aStoreMethods); iStore++)
1270	{
1271	pThis->pszStore = g_aStoreMethods[iStore].pszName;
1272	pPteWrk->pfnModify(pThis, iStore, pPteWrk, 0, 0);
1273
1274	for (iRing = 0; iRing < 4; iRing++)
1275	{
1276	PBS3REGCTX const pCtx = &aCtxts[iRing];
1277	if ( EffWrk.fReserved
1278	\|\| !EffWrk.fPresent
1279	\|\| (!EffWrk.fUser && iRing == 3))
1280	{
1281	uint32_t const fPfBase = ( EffWrk.fReserved ? X86_TRAP_PF_P \| X86_TRAP_PF_RSVD
1282	: EffWrk.fPresent ? X86_TRAP_PF_P : 0)
1283	\| (iRing == 3 ? X86_TRAP_PF_US : 0);
1284	for (iAccessor = 0; iAccessor < RT_ELEMENTS(g_aAccessors); iAccessor++)
1285	{
1286	pThis->pszAccessor = g_aAccessors[iAccessor].pszName;
1287	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF,
1288	fPfBase \| (g_aAccessors[iAccessor].fAccess & fPfIdMask));
1289	}
1290	}
1291	else
1292	{
1293	uint32_t const fPfBase = X86_TRAP_PF_P \| (iRing == 3 ? X86_TRAP_PF_US : 0);
1294	for (iAccessor = 0; iAccessor < RT_ELEMENTS(g_aAccessors); iAccessor++)
1295	{
1296	pThis->pszAccessor = g_aAccessors[iAccessor].pszName;
1297	if ( ( (g_aAccessors[iAccessor].fAccess & X86_TRAP_PF_ID)
1298	&& EffWrk.fNoExecute)
1299	\|\| ( (g_aAccessors[iAccessor].fAccess & X86_TRAP_PF_RW)
1300	&& !EffWrk.fWriteable
1301	&& (fWp \|\| iRing == 3)) )
1302	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF,
1303	fPfBase \| (g_aAccessors[iAccessor].fAccess & fPfIdMask));
1304	else
1305	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1306	}
1307	}
1308	}
1309
1310	/* Reset the paging + full flush. */
1311	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1312	}
1313	#endif
1314
1315	#define CHECK_AD_BITS(a_fExpectedAD) \
1316	do { \
1317	uint32_t fActualAD = ( pThis->PgInfo.cbEntry == 8 \
1318	? pThis->PgInfo.u.Pae.pPte[1].au32[0] : pThis->PgInfo.u.Legacy.pPte[1].au32[0]) \
1319	& (X86_PTE_A \| X86_PTE_D); \
1320	if (fActualAD != (a_fExpectedAD)) \
1321	{ \
1322	Bs3TestFailedF("%u - %s/%u: unexpected A/D bits: %#x, expected %#x\n", \
1323	g_usBs3TestStep, "xxxx", __LINE__, fActualAD, a_fExpectedAD); \
1324	BS3CPUBASIC2PF_HALT(pThis); \
1325	} \
1326	} while (0)
1327
1328	/*
1329	* Again, but redoing everything for each accessor.
1330	*/
1331	for (iStore = 0; iStore < RT_ELEMENTS(g_aStoreMethods); iStore++)
1332	{
1333	pThis->pszStore = g_aStoreMethods[iStore].pszName;
1334
1335	for (iRing = 0; iRing < 4; iRing++)
1336	{
1337	PBS3REGCTX const pCtx = &aCtxts[iRing];
1338
1339	if ( EffWrk.fReserved
1340	\|\| !EffWrk.fPresent
1341	\|\| (!EffWrk.fUser && iRing == 3))
1342	{
1343	uint32_t const fPfBase = ( EffWrk.fReserved ? X86_TRAP_PF_P \| X86_TRAP_PF_RSVD
1344	: EffWrk.fPresent ? X86_TRAP_PF_P : 0)
1345	\| (iRing == 3 ? X86_TRAP_PF_US : 0);
1346	for (iAccessor = 0; iAccessor < RT_ELEMENTS(g_aAccessors); iAccessor++)
1347	{
1348	pThis->pszAccessor = g_aAccessors[iAccessor].pszName;
1349
1350	pPteWrk->pfnModify(pThis, iStore, pPteWrk, 0, 0);
1351	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF,
1352	fPfBase \| (g_aAccessors[iAccessor].fAccess & fPfIdMask));
1353	CHECK_AD_BITS(0);
1354	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1355
1356	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A \| X86_PTE_D, 0);
1357	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF,
1358	fPfBase \| (g_aAccessors[iAccessor].fAccess & fPfIdMask));
1359	CHECK_AD_BITS(0);
1360	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1361	}
1362	}
1363	else
1364	{
1365	uint32_t const fPfBase = X86_TRAP_PF_P \| (iRing == 3 ? X86_TRAP_PF_US : 0);
1366	for (iAccessor = 0; iAccessor < RT_ELEMENTS(g_aAccessors); iAccessor++)
1367	{
1368	pThis->pszAccessor = g_aAccessors[iAccessor].pszName;
1369	if ( ( (g_aAccessors[iAccessor].fAccess & X86_TRAP_PF_ID)
1370	&& EffWrk.fNoExecute)
1371	\|\| ( (g_aAccessors[iAccessor].fAccess & X86_TRAP_PF_RW)
1372	&& !EffWrk.fWriteable
1373	&& (fWp \|\| iRing == 3)) )
1374	{
1375	uint32_t const fErrCd = fPfBase \| (g_aAccessors[iAccessor].fAccess & fPfIdMask);
1376
1377	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A \| X86_PTE_D, 0);
1378	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF, fErrCd);
1379	CHECK_AD_BITS(0);
1380	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1381
1382	pPteWrk->pfnModify(pThis, iStore, pPteWrk, 0, X86_PTE_A \| X86_PTE_D);
1383	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF, fErrCd);
1384	CHECK_AD_BITS(X86_PTE_A \| X86_PTE_D);
1385	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1386
1387	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A, X86_PTE_D);
1388	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF, fErrCd);
1389	CHECK_AD_BITS(X86_PTE_D);
1390	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1391
1392	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_D, X86_PTE_A);
1393	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF, fErrCd);
1394	CHECK_AD_BITS(X86_PTE_A);
1395	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1396	}
1397	else
1398	{
1399	uint32_t const fExpectedAD = (g_aAccessors[iAccessor].fAccess & X86_TRAP_PF_RW)
1400	? X86_PTE_A \| X86_PTE_D : X86_PTE_A;
1401
1402	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A \| X86_PTE_D, 0);
1403	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1404	CHECK_AD_BITS(fExpectedAD);
1405	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1406
1407	pPteWrk->pfnModify(pThis, iStore, pPteWrk, 0, X86_PTE_A \| X86_PTE_D);
1408	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1409	CHECK_AD_BITS(X86_PTE_A \| X86_PTE_D);
1410	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1411
1412	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A, X86_PTE_D);
1413	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1414	CHECK_AD_BITS(fExpectedAD \| X86_PTE_D);
1415	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1416
1417	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_D, X86_PTE_A);
1418	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1419	CHECK_AD_BITS(fExpectedAD \| X86_PTE_A);
1420	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1421	}
1422	}
1423	}
1424	}
1425	}
1426
1427	/*
1428	* Again, but using invalidate page.
1429	*/
1430	if (pThis->fUseInvlPg)
1431	{
1432	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1433
1434	for (iStore = 0; iStore < RT_ELEMENTS(g_aStoreMethods); iStore++)
1435	{
1436	pThis->pszStore = g_aStoreMethods[iStore].pszName;
1437
1438	for (iRing = 0; iRing < 4; iRing++)
1439	{
1440	PBS3REGCTX const pCtx = &aCtxts[iRing];
1441
1442	if ( EffWrk.fReserved
1443	\|\| !EffWrk.fPresent
1444	\|\| (!EffWrk.fUser && iRing == 3))
1445	{
1446	uint32_t const fPfBase = ( EffWrk.fReserved ? X86_TRAP_PF_P \| X86_TRAP_PF_RSVD
1447	: EffWrk.fPresent ? X86_TRAP_PF_P : 0)
1448	\| (iRing == 3 ? X86_TRAP_PF_US : 0);
1449	for (iAccessor = 0; iAccessor < RT_ELEMENTS(g_aAccessors); iAccessor++)
1450	{
1451	pThis->pszAccessor = g_aAccessors[iAccessor].pszName;
1452
1453	pPteWrk->pfnModify(pThis, iStore, pPteWrk, 0, 0);
1454	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1455	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF,
1456	fPfBase \| (g_aAccessors[iAccessor].fAccess & fPfIdMask));
1457	CHECK_AD_BITS(0);
1458
1459	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A \| X86_PTE_D, 0);
1460	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1461	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF,
1462	fPfBase \| (g_aAccessors[iAccessor].fAccess & fPfIdMask));
1463	CHECK_AD_BITS(0);
1464	}
1465	}
1466	else
1467	{
1468	uint32_t const fPfBase = X86_TRAP_PF_P \| (iRing == 3 ? X86_TRAP_PF_US : 0);
1469	for (iAccessor = 0; iAccessor < RT_ELEMENTS(g_aAccessors); iAccessor++)
1470	{
1471	pThis->pszAccessor = g_aAccessors[iAccessor].pszName;
1472	if ( ( (g_aAccessors[iAccessor].fAccess & X86_TRAP_PF_ID)
1473	&& EffWrk.fNoExecute)
1474	\|\| ( (g_aAccessors[iAccessor].fAccess & X86_TRAP_PF_RW)
1475	&& !EffWrk.fWriteable
1476	&& (fWp \|\| iRing == 3)) )
1477	{
1478	uint32_t const fErrCd = fPfBase \| (g_aAccessors[iAccessor].fAccess & fPfIdMask);
1479
1480	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A \| X86_PTE_D, 0);
1481	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1482	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF, fErrCd);
1483	CHECK_AD_BITS(0);
1484
1485	pPteWrk->pfnModify(pThis, iStore, pPteWrk, 0, X86_PTE_A \| X86_PTE_D);
1486	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1487	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF, fErrCd);
1488	CHECK_AD_BITS(X86_PTE_A \| X86_PTE_D);
1489
1490	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A, X86_PTE_D);
1491	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1492	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF, fErrCd);
1493	CHECK_AD_BITS(X86_PTE_D);
1494
1495	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_D, X86_PTE_A);
1496	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1497	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF, fErrCd);
1498	CHECK_AD_BITS(X86_PTE_A);
1499	}
1500	else
1501	{
1502	uint32_t const fExpectedAD = (g_aAccessors[iAccessor].fAccess & X86_TRAP_PF_RW)
1503	? X86_PTE_A \| X86_PTE_D : X86_PTE_A;
1504
1505	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A \| X86_PTE_D, 0);
1506	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1507	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1508	CHECK_AD_BITS(fExpectedAD);
1509
1510	pPteWrk->pfnModify(pThis, iStore, pPteWrk, 0, X86_PTE_A \| X86_PTE_D);
1511	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1512	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1513	CHECK_AD_BITS(X86_PTE_A \| X86_PTE_D);
1514
1515	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A, X86_PTE_D);
1516	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1517	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1518	CHECK_AD_BITS(fExpectedAD \| X86_PTE_D);
1519
1520	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_D, X86_PTE_A);
1521	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1522	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1523	CHECK_AD_BITS(fExpectedAD \| X86_PTE_A);
1524	}
1525	}
1526	}
1527	}
1528	}
1529
1530	bs3CpuBasic2Pf_RestoreFromBackups(pThis);
1531	}
1532	}
1533	}
1534
1535
1536	/*
1537	* Do all 4 paging levels. We start out with full access to the page and
1538	* restrict it in various ways.
1539	*
1540	* (On the final level we only mess with the 2nd page for now.)
1541	*/
1542	cPdPtrTests = 1;
1543	cPml4Tests = 1;
1544	if (pThis->uTestAddr.u >= UINT64_C(0x8000000000))
1545	{
1546	cPml4Tests = 2;
1547	cPdPtrTests = 2;
1548	}
1549	else if (pThis->PgInfo.cEntries == 3)
1550	cPdPtrTests = 2;
1551
1552	#if 0
1553	/* Loop 1: Accessor flags. */
1554	for (iOuter = 0; iOuter < 2; iOuter++)
1555	{
1556	uint32_t const fAccessor = (iOuter == 0 ? BS3CB2PFACC_F_DIRECT : 0) \| BS3CB2PFACC_F_PAGE_LEVEL;
1557
1558	/* Loop 2: Paging store method. */
1559	for (iStore = 0; iStore < RT_ELEMENTS(g_aStoreMethods); iStore++)
1560	{
1561	unsigned iPml4Test;
1562	int8_t cReserved = 0;
1563	int8_t cNotPresent = 0;
1564	int8_t cNotWrite = 0;
1565	int8_t cNotUser = 0;
1566	int8_t cExecute = 0;
1567
1568	/* Loop 3: Page map level 4 */
1569	for (iPml4Test = 0; iPml4Test < cPml4Tests; iPml4Test++)
1570	{
1571	unsigned iPdPtrTest;
1572
1573	/* Loop 4: Page directory pointer table. */
1574	for (iPdPtrTest = 0; iPdPtrTest < cPdPtrTests; iPdPtrTest++)
1575	{
1576	unsigned iPdTest;
1577
1578	/* Loop 5: Page directory. */
1579	for (iPdTest = 0; iPdTest < 2; iPdTest++)
1580	{
1581	unsigned iPtTest;
1582
1583	/* Loop 6: Page table. */
1584	for (iPtTest = 0; iPtTest < 2; iPtTest++)
1585	{
1586	/* Loop 7: Accessor ring. */
1587	for (iRing = 0; iRing < 4; iRing++)
1588	{
1589	PBS3REGCTX const pCtx = &aCtxts[iRing];
1590
1591	if ( EffWrk.fReserved
1592	\|\| !EffWrk.fPresent
1593	\|\| (!EffWrk.fUser && iRing == 3))
1594	{
1595	uint32_t const fPfBase = ( EffWrk.fReserved ? X86_TRAP_PF_P \| X86_TRAP_PF_RSVD
1596	: EffWrk.fPresent ? X86_TRAP_PF_P : 0)
1597	\| (iRing == 3 ? X86_TRAP_PF_US : 0);
1598	for (iAccessor = 0; iAccessor < RT_ELEMENTS(g_aAccessors); iAccessor++)
1599	{
1600	pThis->pszAccessor = g_aAccessors[iAccessor].pszName;
1601
1602	pPteWrk->pfnModify(pThis, iStore, pPteWrk, 0, 0);
1603	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1604	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF,
1605	fPfBase \| (g_aAccessors[iAccessor].fAccess & fPfIdMask));
1606	CHECK_AD_BITS(0);
1607
1608	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A \| X86_PTE_D, 0);
1609	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1610	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF,
1611	fPfBase \| (g_aAccessors[iAccessor].fAccess & fPfIdMask));
1612	CHECK_AD_BITS(0);
1613	}
1614	}
1615	else
1616	{
1617	uint32_t const fPfBase = X86_TRAP_PF_P \| (iRing == 3 ? X86_TRAP_PF_US : 0);
1618	for (iAccessor = 0; iAccessor < RT_ELEMENTS(g_aAccessors); iAccessor++)
1619	{
1620	pThis->pszAccessor = g_aAccessors[iAccessor].pszName;
1621	if ( ( (g_aAccessors[iAccessor].fAccess & X86_TRAP_PF_ID)
1622	&& EffWrk.fNoExecute)
1623	\|\| ( (g_aAccessors[iAccessor].fAccess & X86_TRAP_PF_RW)
1624	&& !EffWrk.fWriteable
1625	&& (fWp \|\| iRing == 3)) )
1626	{
1627	uint32_t const fErrCd = fPfBase \| (g_aAccessors[iAccessor].fAccess & fPfIdMask);
1628
1629	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A \| X86_PTE_D, 0);
1630	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1631	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF, fErrCd);
1632	CHECK_AD_BITS(0);
1633
1634	pPteWrk->pfnModify(pThis, iStore, pPteWrk, 0, X86_PTE_A \| X86_PTE_D);
1635	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1636	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF, fErrCd);
1637	CHECK_AD_BITS(X86_PTE_A \| X86_PTE_D);
1638
1639	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A, X86_PTE_D);
1640	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1641	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF, fErrCd);
1642	CHECK_AD_BITS(X86_PTE_D);
1643
1644	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_D, X86_PTE_A);
1645	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1646	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_PF, fErrCd);
1647	CHECK_AD_BITS(X86_PTE_A);
1648	}
1649	else
1650	{
1651	uint32_t const fExpectedAD = (g_aAccessors[iAccessor].fAccess & X86_TRAP_PF_RW)
1652	? X86_PTE_A \| X86_PTE_D : X86_PTE_A;
1653
1654	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A \| X86_PTE_D, 0);
1655	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1656	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1657	CHECK_AD_BITS(fExpectedAD);
1658
1659	pPteWrk->pfnModify(pThis, iStore, pPteWrk, 0, X86_PTE_A \| X86_PTE_D);
1660	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1661	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1662	CHECK_AD_BITS(X86_PTE_A \| X86_PTE_D);
1663
1664	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_A, X86_PTE_D);
1665	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1666	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1667	CHECK_AD_BITS(fExpectedAD \| X86_PTE_D);
1668
1669	pPteWrk->pfnModify(pThis, iStore, pPteWrk, X86_PTE_D, X86_PTE_A);
1670	ASMInvalidatePage(pThis->uTestAddr.u + X86_PAGE_SIZE);
1671	g_aAccessors[iAccessor].pfnAccessor(pThis, pCtx, fAccessor, X86_XCPT_UD, UINT8_MAX);
1672	CHECK_AD_BITS(fExpectedAD \| X86_PTE_A);
1673	}
1674	}
1675	}
1676	}
1677
1678	}
1679	}
1680	}
1681	}
1682
1683	}
1684	}
1685	#endif
1686
1687	/*
1688	* Check reserved bits on each paging level.
1689	*/
1690
1691	/* Loop 1: Accessor flags (only direct for now). */
1692	for (iOuter = 0; iOuter < 1; iOuter++)
1693	{
1694	uint32_t const fAccessor = BS3CB2PFACC_F_DIRECT;
1695
1696	/* Loop 2: Paging store method. */
1697	for (iStore = 0; iStore < RT_ELEMENTS(g_aStoreMethods); iStore++)
1698	{
1699	/* Loop 3: Accessor ring. */
1700	for (iRing = 0; iRing < 4; iRing++)
1701	{
1702	/* Loop 4: Which level we mess up. */
1703	for (iLevel = 0; iLevel < pThis->PgInfo.cEntries; iLevel++)
1704	{
1705	#if 0
1706	const BS3CPUBASIC2PFMODPT *pPteWrk = &g_aPteWorkers[iPteWrk];
1707	if (pThis->PgInfo.)
1708	{
1709	}
1710	#endif
1711
1712
1713	}
1714	}
1715	}
1716	}
1717
1718
1719
1720	return 0;
1721	}
1722
1723
1724	BS3_DECL_CALLBACK(uint8_t) bs3CpuBasic2_RaiseXcpt0e_c32(uint8_t bMode)
1725	{
1726	void *pvTestUnaligned;
1727	uint32_t cbTestUnaligned = _8M;
1728	uint8_t bRet = 1;
1729	int rc;
1730	BS3CPUBASIC2PFSTATE State;
1731
1732	/*
1733	* Initalize the state data.
1734	*/
1735	Bs3MemZero(&State, sizeof(State));
1736	State.bMode = bMode;
1737	switch (bMode & BS3_MODE_CODE_MASK)
1738	{
1739	case BS3_MODE_CODE_16: State.cbAccess = sizeof(uint16_t); break;
1740	case BS3_MODE_CODE_V86: State.cbAccess = sizeof(uint16_t); break;
1741	case BS3_MODE_CODE_32: State.cbAccess = sizeof(uint32_t); break;
1742	case BS3_MODE_CODE_64: State.cbAccess = sizeof(uint64_t); break;
1743	}
1744	State.pCmnMode = &g_aCmnModes[0];
1745	while (State.pCmnMode->bMode != (bMode & BS3_MODE_CODE_MASK))
1746	State.pCmnMode++;
1747	State.fUseInvlPg = (g_uBs3CpuDetected & BS3CPU_TYPE_MASK) >= BS3CPU_80486;
1748
1749	/* Figure physical addressing width. */
1750	State.cBitsPhysWidth = 32;
1751	if ( (g_uBs3CpuDetected & BS3CPU_F_CPUID)
1752	&& (ASMCpuId_EDX(1) & (X86_CPUID_FEATURE_EDX_PSE36 \| X86_CPUID_FEATURE_EDX_PAE)) )
1753	State.cBitsPhysWidth = 36;
1754
1755	if ( (g_uBs3CpuDetected & BS3CPU_F_CPUID_EXT_LEAVES)
1756	&& ASMCpuId_EAX(0x80000000) >= 0x80000008)
1757	{
1758	uint8_t cBits = (uint8_t)ASMCpuId_EAX(0x80000008);
1759	if (cBits >= 32 && cBits <= 52)
1760	State.cBitsPhysWidth = cBits;
1761	else
1762	Bs3TestPrintf("CPUID 0x80000008: Physical bitcount out of range: %u\n", cBits);
1763	}
1764	//Bs3TestPrintf("Physical bitcount: %u\n", State.cBitsPhysWidth);
1765
1766	/*
1767	* Allocate a some memory we can play around with, then carve a size aligned
1768	* chunk out of it so we might be able to maybe play with 2/4MB pages too.
1769	*/
1770	cbTestUnaligned = _8M * 2;
1771	while ((pvTestUnaligned = Bs3MemAlloc(BS3MEMKIND_FLAT32, cbTestUnaligned)) == NULL)
1772	{
1773	cbTestUnaligned >>= 1;
1774	if (cbTestUnaligned <= _16K)
1775	{
1776	Bs3TestFailed("Failed to allocate memory to play around with\n");
1777	return 1;
1778	}
1779	}
1780
1781	/* align. */
1782	if ((uintptr_t)pvTestUnaligned & (cbTestUnaligned - 1))
1783	{
1784	State.cbTest = cbTestUnaligned >> 1;
1785	State.pbOrgTest = (uint8_t *)(((uintptr_t)pvTestUnaligned + State.cbTest - 1) & ~(State.cbTest - 1));
1786	}
1787	else
1788	{
1789	State.pbOrgTest = pvTestUnaligned;
1790	State.cbTest = cbTestUnaligned;
1791	}
1792	State.cTestPages = State.cbTest >> X86_PAGE_SHIFT;
1793
1794	/*
1795	* Alias this memory far away from where our code and data lives.
1796	*/
1797	if (bMode & BS3_MODE_CODE_64)
1798	State.uTestAddr.u = UINT64_C(0x0000648680000000);
1799	else
1800	State.uTestAddr.u = UINT32_C(0x80000000);
1801	rc = Bs3PagingAlias(State.uTestAddr.u, (uintptr_t)State.pbOrgTest, State.cbTest, X86_PTE_P \| X86_PTE_RW \| X86_PTE_US);
1802	if (RT_SUCCESS(rc))
1803	{
1804	rc = Bs3PagingQueryAddressInfo(State.uTestAddr.u, &State.PgInfo);
1805	if (RT_SUCCESS(rc))
1806	{
1807	if (bMode & BS3_MODE_CODE_64) ASMHalt();
1808	/* Set values that derives from the test memory size and paging info. */
1809	if (State.PgInfo.cEntries == 2)
1810	{
1811	State.cTestPdes = (State.cTestPages + X86_PG_ENTRIES - 1) / X86_PG_ENTRIES;
1812	State.cTest1stPtes = RT_MIN(State.cTestPages, X86_PG_ENTRIES);
1813	State.cbPdeBackup = State.cTestPdes * (X86_PAGE_SIZE / X86_PG_ENTRIES);
1814	State.cbPteBackup = State.cTest1stPtes * (X86_PAGE_SIZE / X86_PG_ENTRIES);
1815	}
1816	else
1817	{
1818	State.cTestPdes = (State.cTestPages + X86_PG_PAE_ENTRIES - 1) / X86_PG_PAE_ENTRIES;
1819	State.cTest1stPtes = RT_MIN(State.cTestPages, X86_PG_PAE_ENTRIES);
1820	State.cbPdeBackup = State.cTestPdes * (X86_PAGE_SIZE / X86_PG_PAE_ENTRIES);
1821	State.cbPteBackup = State.cTest1stPtes * (X86_PAGE_SIZE / X86_PG_PAE_ENTRIES);
1822	}
1823	#ifdef BS3CPUBASIC2PF_FASTER
1824	State.cbPteBackup = State.PgInfo.cbEntry * 4;
1825	#endif
1826	if (State.cTestPdes <= RT_ELEMENTS(State.au64PdeBackup))
1827	{
1828	uint32_t cr0 = ASMGetCR0();
1829
1830	/* Back up the structures. */
1831	Bs3MemCpy(&State.PteBackup, State.PgInfo.u.Legacy.pPte, State.cbPteBackup);
1832	Bs3MemCpy(State.au64PdeBackup, State.PgInfo.u.Legacy.pPde, State.cbPdeBackup);
1833	if (State.PgInfo.cEntries > 2)
1834	State.u64PdpteBackup = State.PgInfo.u.Pae.pPdpe->u;
1835	if (State.PgInfo.cEntries > 3)
1836	State.u64Pml4eBackup = State.PgInfo.u.Pae.pPml4e->u;
1837
1838	/*
1839	* Setup a 16-bit selector for accessing the alias.
1840	*/
1841	Bs3SelSetup16BitData(&Bs3GdteSpare00, State.uTestAddr.u32);
1842	State.uSel16TestData = BS3_SEL_SPARE_00 \| 3;
1843
1844	/*
1845	* Do the testing.
1846	*/
1847	ASMSetCR0(ASMGetCR0() & ~X86_CR0_WP);
1848	bRet = bs3CpuBasic2_RaiseXcpt0eWorker(&State, false /fWp/, false /fNxe/);
1849	if (bRet == 0 && (g_uBs3CpuDetected & BS3CPU_TYPE_MASK) >= BS3CPU_80486)
1850	{
1851	ASMSetCR0(ASMGetCR0() \| X86_CR0_WP);
1852	bRet = bs3CpuBasic2_RaiseXcpt0eWorker(&State, true /fWp/, false /fNxe/);
1853	}
1854
1855	/* Do again with NX enabled. */
1856	if (bRet == 0 && (g_uBs3CpuDetected & BS3CPU_F_NX))
1857	{
1858	ASMWrMsr(MSR_K6_EFER, ASMRdMsr(MSR_K6_EFER) \| MSR_K6_EFER_NXE);
1859	ASMSetCR0(ASMGetCR0() & ~X86_CR0_WP);
1860	bRet = bs3CpuBasic2_RaiseXcpt0eWorker(&State, false /fWp/, State.PgInfo.cbEntry == 8 /fNxe/);
1861	ASMSetCR0(ASMGetCR0() \| X86_CR0_WP);
1862	bRet = bs3CpuBasic2_RaiseXcpt0eWorker(&State, true /fWp/, State.PgInfo.cbEntry == 8 /fNxe/);
1863	ASMWrMsr(MSR_K6_EFER, ASMRdMsr(MSR_K6_EFER) & ~MSR_K6_EFER_NXE);
1864	}
1865	bs3CpuBasic2Pf_RestoreFromBackups(&State);
1866	ASMSetCR0((ASMGetCR0() & ~X86_CR0_WP) \| (cr0 & X86_CR0_WP));
1867	}
1868	else
1869	Bs3TestFailedF("cTestPdes=%u!\n", State.cTestPdes);
1870	}
1871	else
1872	Bs3TestFailedF("Bs3PagingQueryAddressInfo failed: %d\n", rc);
1873	Bs3PagingUnalias(State.uTestAddr.u, State.cbTest);
1874	}
1875	else
1876	Bs3TestFailedF("Bs3PagingAlias failed! rc=%d\n", rc);
1877	Bs3MemFree(pvTestUnaligned, cbTestUnaligned);
1878	return bRet;
1879	}
1880

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