IEMAllN8veRecompBltIn.cpp@ 107044

Last change on this file since 107044 was 106465, checked in by vboxsync, 5 weeks ago
VMM/IEM: Added iemNativeEmitLoadGprWithGstReg[Ex]T and iemNativeEmitStoreGprToGstReg[Ex]T as better way of explictly loading & storing standard guest registers. bugref:10720
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File size: 105.7 KB

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1	/* $Id: IEMAllN8veRecompBltIn.cpp 106465 2024-10-18 00:27:52Z vboxsync $ */
2	/** @file
3	* IEM - Native Recompiler, Emitters for Built-In Threaded Functions.
4	*/
5
6	/*
7	* Copyright (C) 2023-2024 Oracle and/or its affiliates.
8	*
9	* This file is part of VirtualBox base platform packages, as
10	* available from https://www.virtualbox.org.
11	*
12	* This program is free software; you can redistribute it and/or
13	* modify it under the terms of the GNU General Public License
14	* as published by the Free Software Foundation, in version 3 of the
15	* License.
16	*
17	* This program is distributed in the hope that it will be useful, but
18	* WITHOUT ANY WARRANTY; without even the implied warranty of
19	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	* General Public License for more details.
21	*
22	* You should have received a copy of the GNU General Public License
23	* along with this program; if not, see <https://www.gnu.org/licenses>.
24	*
25	* SPDX-License-Identifier: GPL-3.0-only
26	*/
27
28
29	/*********************************************************************************************************************************
30	* Header Files *
31	*********************************************************************************************************************************/
32	#define LOG_GROUP LOG_GROUP_IEM_RE_NATIVE
33	#define IEM_WITH_OPAQUE_DECODER_STATE
34	#define VMCPU_INCL_CPUM_GST_CTX
35	#define VMM_INCLUDED_SRC_include_IEMMc_h /* block IEMMc.h inclusion. */
36	#include <VBox/vmm/iem.h>
37	#include <VBox/vmm/cpum.h>
38	#include <VBox/vmm/dbgf.h>
39	#include "IEMInternal.h"
40	#include <VBox/vmm/vmcc.h>
41	#include <VBox/log.h>
42	#include <VBox/err.h>
43	#include <VBox/param.h>
44	#include <iprt/assert.h>
45	#include <iprt/string.h>
46	#if defined(RT_ARCH_AMD64)
47	# include <iprt/x86.h>
48	#elif defined(RT_ARCH_ARM64)
49	# include <iprt/armv8.h>
50	#endif
51
52
53	#include "IEMInline.h"
54	#include "IEMThreadedFunctions.h"
55	#include "IEMN8veRecompiler.h"
56	#include "IEMN8veRecompilerEmit.h"
57	#include "IEMN8veRecompilerTlbLookup.h"
58	#include "target-x86/IEMAllN8veEmit-x86.h"
59
60
61
62	/*********************************************************************************************************************************
63	* TB Helper Functions *
64	*********************************************************************************************************************************/
65	#if defined(RT_ARCH_AMD64) \|\| defined(RT_ARCH_ARM64)
66	DECLASM(void) iemNativeHlpAsmSafeWrapLogCpuState(void);
67	#endif
68
69
70	/**
71	* Used by TB code to deal with a TLB miss for a new page.
72	*/
73	IEM_DECL_NATIVE_HLP_DEF(void, iemNativeHlpMemCodeNewPageTlbMiss,(PVMCPUCC pVCpu))
74	{
75	#ifdef IEM_WITH_TLB_STATISTICS
76	STAM_REL_COUNTER_INC(&pVCpu->iem.s.StatNativeCodeTlbMissesNewPage);
77	#endif
78	pVCpu->iem.s.pbInstrBuf = NULL;
79	pVCpu->iem.s.offCurInstrStart = GUEST_PAGE_SIZE;
80	pVCpu->iem.s.offInstrNextByte = GUEST_PAGE_SIZE;
81	iemOpcodeFetchBytesJmp(pVCpu, 0, NULL);
82	if (pVCpu->iem.s.pbInstrBuf)
83	{ /* likely */ }
84	else
85	{
86	AssertMsgFailed(("cs:rip=%04x:%08RX64\n", pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip));
87	IEM_DO_LONGJMP(pVCpu, VINF_SUCCESS);
88	}
89	}
90
91
92	/**
93	* Used by TB code to deal with a TLB miss for a new page.
94	*/
95	IEM_DECL_NATIVE_HLP_DEF(RTGCPHYS, iemNativeHlpMemCodeNewPageTlbMissWithOff,(PVMCPUCC pVCpu, uint8_t offInstr))
96	{
97	#ifdef IEM_WITH_TLB_STATISTICS
98	STAM_REL_COUNTER_INC(&pVCpu->iem.s.StatNativeCodeTlbMissesNewPageWithOffset);
99	#endif
100	pVCpu->iem.s.pbInstrBuf = NULL;
101	pVCpu->iem.s.offCurInstrStart = GUEST_PAGE_SIZE - offInstr;
102	pVCpu->iem.s.offInstrNextByte = GUEST_PAGE_SIZE;
103	iemOpcodeFetchBytesJmp(pVCpu, 0, NULL);
104	AssertMsg(pVCpu->iem.s.pbInstrBuf, ("cs:rip=%04x:%08RX64\n", pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip));
105	return pVCpu->iem.s.pbInstrBuf ? pVCpu->iem.s.GCPhysInstrBuf : NIL_RTGCPHYS;
106	}
107
108
109	/*********************************************************************************************************************************
110	* Builtin functions *
111	*********************************************************************************************************************************/
112
113	/**
114	* Built-in function that does nothing.
115	*
116	* Whether this is called or not can be controlled by the entry in the
117	* IEMThreadedGenerator.katBltIns table. This can be useful to determine
118	* whether why behaviour changes when enabling the LogCpuState builtins. I.e.
119	* whether it's the reduced call count in the TBs or the threaded calls flushing
120	* register state.
121	*/
122	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_Nop)
123	{
124	RT_NOREF(pReNative, pCallEntry);
125	return off;
126	}
127
128	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_Nop)
129	{
130	pOutgoing = pIncoming;
131	RT_NOREF(pCallEntry);
132	}
133
134
135	/**
136	* Emits for for LogCpuState.
137	*
138	* This shouldn't have any relevant impact on the recompiler state.
139	*/
140	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_LogCpuState)
141	{
142	#ifdef RT_ARCH_AMD64
143	uint8_t * const pbCodeBuf = iemNativeInstrBufEnsure(pReNative, off, 20);
144	/* push rax */
145	pbCodeBuf[off++] = 0x50 + X86_GREG_xAX;
146	/* push imm32 */
147	pbCodeBuf[off++] = 0x68;
148	pbCodeBuf[off++] = RT_BYTE1(pCallEntry->auParams[0]);
149	pbCodeBuf[off++] = RT_BYTE2(pCallEntry->auParams[0]);
150	pbCodeBuf[off++] = RT_BYTE3(pCallEntry->auParams[0]);
151	pbCodeBuf[off++] = RT_BYTE4(pCallEntry->auParams[0]);
152	/* mov rax, iemNativeHlpAsmSafeWrapLogCpuState */
153	pbCodeBuf[off++] = X86_OP_REX_W;
154	pbCodeBuf[off++] = 0xb8 + X86_GREG_xAX;
155	(uint64_t )&pbCodeBuf[off] = (uintptr_t)iemNativeHlpAsmSafeWrapLogCpuState;
156	off += sizeof(uint64_t);
157	/* call rax */
158	pbCodeBuf[off++] = 0xff;
159	pbCodeBuf[off++] = X86_MODRM_MAKE(X86_MOD_REG, 2, X86_GREG_xAX);
160	/* pop rax */
161	pbCodeBuf[off++] = 0x58 + X86_GREG_xAX;
162	/* pop rax */
163	pbCodeBuf[off++] = 0x58 + X86_GREG_xAX;
164	#else
165	off = iemNativeEmitCallImm(pReNative, off, (uintptr_t)iemNativeHlpAsmSafeWrapLogCpuState);
166	RT_NOREF(pCallEntry);
167	#endif
168
169	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
170	return off;
171	}
172
173	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_LogCpuState)
174	{
175	IEM_LIVENESS_RAW_INIT_WITH_CALL(pOutgoing, pIncoming);
176	RT_NOREF(pCallEntry);
177	}
178
179
180	/**
181	* Built-in function that calls a C-implemention function taking zero arguments.
182	*/
183	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_DeferToCImpl0)
184	{
185	PFNIEMCIMPL0 const pfnCImpl = (PFNIEMCIMPL0)(uintptr_t)pCallEntry->auParams[0];
186	uint8_t const cbInstr = (uint8_t)pCallEntry->auParams[1];
187	uint64_t const fGstShwFlush = pCallEntry->auParams[2];
188	return iemNativeEmitCImplCall(pReNative, off, pCallEntry->idxInstr, fGstShwFlush, (uintptr_t)pfnCImpl, cbInstr, 0, 0, 0, 0);
189	}
190
191	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_DeferToCImpl0)
192	{
193	IEM_LIVENESS_RAW_INIT_WITH_CALL(pOutgoing, pIncoming);
194	RT_NOREF(pCallEntry);
195	}
196
197
198	/**
199	* Flushes pending writes in preparation of raising an exception or aborting the TB.
200	*/
201	#define BODY_FLUSH_PENDING_WRITES() \
202	off = iemNativeRegFlushPendingWrites(pReNative, off);
203
204
205	/**
206	* Worker for the CheckIrq, CheckTimers and CheckTimersAndIrq builtins below.
207	*/
208	template<bool const a_fCheckTimers, bool const a_fCheckIrqs>
209	DECL_FORCE_INLINE_THROW(uint32_t) iemNativeRecompFunc_BltIn_CheckTimersAndIrqsCommon(PIEMRECOMPILERSTATE pReNative, uint32_t off)
210	{
211	uint8_t const idxEflReg = !a_fCheckIrqs ? UINT8_MAX
212	: iemNativeRegAllocTmpForGuestEFlagsReadOnly(pReNative, &off,
213	RT_BIT_64(IEMLIVENESSBIT_IDX_EFL_OTHER));
214	uint8_t const idxTmpReg1 = iemNativeRegAllocTmp(pReNative, &off);
215	uint8_t const idxTmpReg2 = a_fCheckIrqs ? iemNativeRegAllocTmp(pReNative, &off) : UINT8_MAX;
216	PIEMNATIVEINSTR const pCodeBuf = iemNativeInstrBufEnsure(pReNative, off,
217	(RT_ARCH_VAL == RT_ARCH_VAL_AMD64 ? 72 : 32)
218	+ IEMNATIVE_MAX_POSTPONED_EFLAGS_INSTRUCTIONS * 3);
219
220	/*
221	* First we decrement the timer poll counter, if so desired.
222	*/
223	if (a_fCheckTimers)
224	{
225	# ifdef RT_ARCH_AMD64
226	/* dec [rbx + cTbsTillNextTimerPoll] */
227	pCodeBuf[off++] = 0xff;
228	off = iemNativeEmitGprByVCpuDisp(pCodeBuf, off, 1, RT_UOFFSETOF(VMCPU, iem.s.cTbsTillNextTimerPoll));
229
230	/* jz ReturnBreakFF */
231	off = iemNativeEmitTbExitJccEx<kIemNativeLabelType_ReturnBreakFF>(pReNative, pCodeBuf, off, kIemNativeInstrCond_e);
232
233	# elif defined(RT_ARCH_ARM64)
234	AssertCompile(RTASSERT_OFFSET_OF(VMCPU, iem.s.cTbsTillNextTimerPoll) < _4K * sizeof(uint32_t));
235	off = iemNativeEmitLoadGprFromVCpuU32Ex(pCodeBuf, off, idxTmpReg1, RT_UOFFSETOF(VMCPU, iem.s.cTbsTillNextTimerPoll));
236	pCodeBuf[off++] = Armv8A64MkInstrSubUImm12(idxTmpReg1, idxTmpReg1, 1, false /f64Bit/);
237	off = iemNativeEmitStoreGprToVCpuU32Ex(pCodeBuf, off, idxTmpReg1, RT_UOFFSETOF(VMCPU, iem.s.cTbsTillNextTimerPoll));
238
239	/* cbz reg1, ReturnBreakFF */
240	off = iemNativeEmitTbExitIfGprIsZeroEx<kIemNativeLabelType_ReturnBreakFF>(pReNative, pCodeBuf, off,
241	idxTmpReg1, false /f64Bit/);
242
243	# else
244	# error "port me"
245	# endif
246	}
247
248	/*
249	* Second, check forced flags, if so desired.
250	*
251	* We OR them together to save a conditional. A trick here is that the
252	* two IRQ flags are unused in the global flags, so we can still use the
253	* resulting value to check for suppressed interrupts.
254	*/
255	if (a_fCheckIrqs)
256	{
257	/* Load VMCPU::fLocalForcedActions first and mask it. We can simplify the
258	masking by ASSUMING none of the unwanted flags are located above bit 30. */
259	uint64_t const fUnwantedCpuFFs = VMCPU_FF_PGM_SYNC_CR3
260	\| VMCPU_FF_PGM_SYNC_CR3_NON_GLOBAL
261	\| VMCPU_FF_TLB_FLUSH
262	\| VMCPU_FF_UNHALT;
263	AssertCompile(fUnwantedCpuFFs < RT_BIT_64(31));
264	off = iemNativeEmitLoadGprFromVCpuU64Ex(pCodeBuf, off, idxTmpReg1, RT_UOFFSETOF(VMCPUCC, fLocalForcedActions));
265	# if defined(RT_ARCH_AMD64)
266	/* and reg1, ~fUnwantedCpuFFs */
267	pCodeBuf[off++] = idxTmpReg1 >= 8 ? X86_OP_REX_B \| X86_OP_REX_W : X86_OP_REX_W;
268	pCodeBuf[off++] = 0x81;
269	pCodeBuf[off++] = X86_MODRM_MAKE(X86_MOD_REG, 4, idxTmpReg1 & 7);
270	(uint32_t )&pCodeBuf[off] = ~(uint32_t)fUnwantedCpuFFs;
271	off += 4;
272
273	# else
274	off = iemNativeEmitLoadGprImmEx(pCodeBuf, off, idxTmpReg2, ~fUnwantedCpuFFs);
275	off = iemNativeEmitAndGprByGprEx(pCodeBuf, off, idxTmpReg1, idxTmpReg2);
276	# endif
277
278	/* OR in VM::fGlobalForcedActions. We access the member via pVCpu.
279	No need to mask anything here. Unfortunately, it's a 32-bit
280	variable, so we can't OR it directly on x86.
281
282	Note! We take a tiny liberty here and ASSUME that the VM and associated
283	VMCPU mappings are less than 2 GiB away from one another, so we
284	can access VM::fGlobalForcedActions via a 32-bit signed displacement.
285
286	This is _only_ a potential issue with VMs using the _support_ _driver_
287	for manging the structure, as it maps the individual bits separately
288	and the mapping order differs between host platforms. Linux may
289	map the VM structure higher than the VMCPU ones, whereas windows may
290	do put the VM structure in the lowest address. On all hosts there
291	is a chance that virtual memory fragmentation could cause the bits to
292	end up at a greater distance from one another, but it is rather
293	doubtful and we just ASSUME it won't happen for now...
294
295	When the VM structure is allocated in userland, there is one
296	allocation for it and all the associated VMCPU components, thus no
297	problems. */
298	AssertCompile(VM_FF_ALL_MASK == UINT32_MAX);
299	intptr_t const offGlobalForcedActions = (intptr_t)&pReNative->pVCpu->CTX_SUFF(pVM)->fGlobalForcedActions
300	- (intptr_t)pReNative->pVCpu;
301	if (RT_LIKELY((int32_t)offGlobalForcedActions == offGlobalForcedActions))
302	{ /* likely */ }
303	else
304	{
305	LogRelMax(16, ("!!WARNING!! offGlobalForcedActions=%#zx pVM=%p pVCpu=%p - CheckTimersAndIrqsCommon\n",
306	offGlobalForcedActions, pReNative->pVCpu->CTX_SUFF(pVM), pReNative->pVCpu));
307	# ifdef IEM_WITH_THROW_CATCH
308	AssertFailedStmt(IEMNATIVE_DO_LONGJMP(NULL, VERR_IEM_IPE_9));
309	# else
310	AssertReleaseFailed();
311	# endif
312	}
313
314	# ifdef RT_ARCH_AMD64
315	if (idxTmpReg2 >= 8)
316	pCodeBuf[off++] = X86_OP_REX_R;
317	pCodeBuf[off++] = 0x8b; /* mov */
318	off = iemNativeEmitGprByVCpuSignedDisp(pCodeBuf, off, idxTmpReg2, (int32_t)offGlobalForcedActions);
319
320	/* or reg1, reg2 */
321	off = iemNativeEmitOrGprByGprEx(pCodeBuf, off, idxTmpReg1, idxTmpReg2);
322
323	/* jz nothing_pending */
324	uint32_t const offFixup1 = off;
325	off = iemNativeEmitJccToFixedEx(pCodeBuf, off, IEMNATIVE_HAS_POSTPONED_EFLAGS_CALCS(pReNative) ? off + 512 : off + 64,
326	kIemNativeInstrCond_e);
327
328	# elif defined(RT_ARCH_ARM64)
329	Assert(offGlobalForcedActions < 0);
330	off = iemNativeEmitGprBySignedVCpuLdStEx(pCodeBuf, off, idxTmpReg2, (int32_t)offGlobalForcedActions,
331	kArmv8A64InstrLdStType_Ld_Word, sizeof(uint32_t));
332	off = iemNativeEmitOrGprByGprEx(pCodeBuf, off, idxTmpReg1, idxTmpReg2);
333
334	/* cbz nothing_pending */
335	uint32_t const offFixup1 = off;
336	off = iemNativeEmitTestIfGprIsZeroOrNotZeroAndJmpToFixedEx(pCodeBuf, off, idxTmpReg1, true /f64Bit/,
337	false /fJmpIfNotZero/, off);
338	# else
339	# error "port me"
340	# endif
341
342	/* More than just IRQ FFs pending? */
343	AssertCompile((VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC) == 3);
344	/* cmp reg1, 3 */
345	off = iemNativeEmitCmpGprWithImmEx(pCodeBuf, off, idxTmpReg1, VMCPU_FF_INTERRUPT_APIC \| VMCPU_FF_INTERRUPT_PIC);
346	/* ja ReturnBreakFF */
347	off = iemNativeEmitTbExitJccEx<kIemNativeLabelType_ReturnBreakFF>(pReNative, pCodeBuf, off, kIemNativeInstrCond_nbe);
348
349	/*
350	* Okay, we've only got pending IRQ related FFs: Can we dispatch IRQs?
351	*
352	* ASSUME that the shadow flags are cleared when they ought to be cleared,
353	* so we can skip the RIP check.
354	*/
355	AssertCompile(CPUMCTX_INHIBIT_SHADOW < RT_BIT_32(31));
356	/* reg1 = efl & (IF \| INHIBIT_SHADOW) */
357	off = iemNativeEmitGpr32EqGprAndImmEx(pCodeBuf, off, idxTmpReg1, idxEflReg, X86_EFL_IF \| CPUMCTX_INHIBIT_SHADOW);
358	/* reg1 ^= IF */
359	off = iemNativeEmitXorGpr32ByImmEx(pCodeBuf, off, idxTmpReg1, X86_EFL_IF);
360
361	# ifdef RT_ARCH_AMD64
362	/* jz ReturnBreakFF */
363	off = iemNativeEmitTbExitJccEx<kIemNativeLabelType_ReturnBreakFF>(pReNative, pCodeBuf, off, kIemNativeInstrCond_e);
364
365	# elif defined(RT_ARCH_ARM64)
366	/* cbz reg1, ReturnBreakFF */
367	off = iemNativeEmitTbExitIfGprIsZeroEx<kIemNativeLabelType_ReturnBreakFF>(pReNative, pCodeBuf, off,
368	idxTmpReg1, false /f64Bit/);
369	# else
370	# error "port me"
371	# endif
372	/*
373	* nothing_pending:
374	*/
375	iemNativeFixupFixedJump(pReNative, offFixup1, off);
376	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
377	}
378
379	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
380
381	/*
382	* Cleanup.
383	*/
384	iemNativeRegFreeTmp(pReNative, idxTmpReg1);
385	if (a_fCheckIrqs)
386	{
387	iemNativeRegFreeTmp(pReNative, idxTmpReg2);
388	iemNativeRegFreeTmp(pReNative, idxEflReg);
389	}
390	else
391	{
392	Assert(idxTmpReg2 == UINT8_MAX);
393	Assert(idxEflReg == UINT8_MAX);
394	}
395
396	return off;
397	}
398
399
400	/**
401	* Built-in function that checks for pending interrupts that can be delivered or
402	* forced action flags.
403	*
404	* This triggers after the completion of an instruction, so EIP is already at
405	* the next instruction. If an IRQ or important FF is pending, this will return
406	* a non-zero status that stops TB execution.
407	*/
408	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckIrq)
409	{
410	BODY_FLUSH_PENDING_WRITES();
411	off = iemNativeRecompFunc_BltIn_CheckTimersAndIrqsCommon<false, true>(pReNative, off);
412
413	/* Note down that we've been here, so we can skip FFs + IRQ checks when
414	doing direct linking. */
415	#ifdef IEMNATIVE_WITH_LIVENESS_ANALYSIS
416	pReNative->idxLastCheckIrqCallNo = pReNative->idxCurCall;
417	RT_NOREF(pCallEntry);
418	#else
419	pReNative->idxLastCheckIrqCallNo = pCallEntry - pReNative->pTbOrg->Thrd.paCalls;
420	#endif
421
422	return off;
423	}
424
425	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckIrq)
426	{
427	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
428	IEM_LIVENESS_RAW_EFLAGS_ONE_INPUT(pOutgoing, fEflOther);
429	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
430	RT_NOREF(pCallEntry);
431	}
432
433
434	/**
435	* Built-in function that works the cTbsTillNextTimerPoll counter on direct TB
436	* linking, like loop-jumps.
437	*/
438	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckTimers)
439	{
440	BODY_FLUSH_PENDING_WRITES();
441	RT_NOREF(pCallEntry);
442	return iemNativeRecompFunc_BltIn_CheckTimersAndIrqsCommon<true, false>(pReNative, off);
443	}
444
445	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckTimers)
446	{
447	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
448	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
449	RT_NOREF(pCallEntry);
450	}
451
452
453	/**
454	* Combined BltIn_CheckTimers + BltIn_CheckIrq for direct linking.
455	*/
456	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckTimersAndIrq)
457	{
458	BODY_FLUSH_PENDING_WRITES();
459	RT_NOREF(pCallEntry);
460	return iemNativeRecompFunc_BltIn_CheckTimersAndIrqsCommon<true, true>(pReNative, off);
461	}
462
463	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckTimersAndIrq)
464	{
465	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
466	IEM_LIVENESS_RAW_EFLAGS_ONE_INPUT(pOutgoing, fEflOther);
467	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
468	RT_NOREF(pCallEntry);
469	}
470
471
472	/**
473	* Built-in function checks if IEMCPU::fExec has the expected value.
474	*/
475	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckMode)
476	{
477	uint32_t const fExpectedExec = (uint32_t)pCallEntry->auParams[0];
478	uint8_t const idxTmpReg = iemNativeRegAllocTmp(pReNative, &off);
479
480	off = iemNativeEmitLoadGprFromVCpuU32(pReNative, off, idxTmpReg, RT_UOFFSETOF(VMCPUCC, iem.s.fExec));
481	off = iemNativeEmitAndGpr32ByImm(pReNative, off, idxTmpReg, IEMTB_F_KEY_MASK);
482	off = iemNativeEmitTbExitIfGpr32NotEqualImm<kIemNativeLabelType_ReturnBreak>(pReNative, off, idxTmpReg,
483	fExpectedExec & IEMTB_F_KEY_MASK);
484	iemNativeRegFreeTmp(pReNative, idxTmpReg);
485
486	/* Maintain the recompiler fExec state. */
487	pReNative->fExec = fExpectedExec & IEMTB_F_IEM_F_MASK;
488	return off;
489	}
490
491	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckMode)
492	{
493	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
494	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
495	RT_NOREF(pCallEntry);
496	}
497
498
499	/**
500	* Sets idxTbCurInstr in preparation of raising an exception or aborting the TB.
501	*/
502	/** @todo Optimize this, so we don't set the same value more than once. Just
503	* needs some tracking. */
504	#ifdef IEMNATIVE_WITH_INSTRUCTION_COUNTING
505	# define BODY_SET_CUR_INSTR() \
506	off = iemNativeEmitStoreImmToVCpuU8(pReNative, off, pCallEntry->idxInstr, RT_UOFFSETOF(VMCPUCC, iem.s.idxTbCurInstr))
507	#else
508	# define BODY_SET_CUR_INSTR() ((void)0)
509	#endif
510
511
512	/**
513	* Macro that emits the 16/32-bit CS.LIM check.
514	*/
515	#define BODY_CHECK_CS_LIM(a_cbInstr) \
516	off = iemNativeEmitBltInCheckCsLim(pReNative, off, (a_cbInstr))
517
518	#define LIVENESS_CHECK_CS_LIM(a_pOutgoing) \
519	IEM_LIVENESS_RAW_SEG_LIMIT_INPUT(a_pOutgoing, X86_SREG_CS)
520
521	DECL_FORCE_INLINE(uint32_t)
522	iemNativeEmitBltInCheckCsLim(PIEMRECOMPILERSTATE pReNative, uint32_t off, uint8_t cbInstr)
523	{
524	Assert(cbInstr > 0);
525	Assert(cbInstr < 16);
526	#ifdef VBOX_STRICT
527	off = iemNativeEmitMarker(pReNative, off, 0x80000001);
528	#endif
529
530	#ifdef IEMNATIVE_WITH_DELAYED_PC_UPDATING
531	Assert(pReNative->Core.offPc == 0);
532	#endif
533
534	/*
535	* We need CS.LIM and RIP here. When cbInstr is larger than 1, we also need
536	* a temporary register for calculating the last address of the instruction.
537	*
538	* The calculation and comparisons are 32-bit. We ASSUME that the incoming
539	* RIP isn't totally invalid, i.e. that any jump/call/ret/iret instruction
540	* that last updated EIP here checked it already, and that we're therefore
541	* safe in the 32-bit wrap-around scenario to only check that the last byte
542	* is within CS.LIM. In the case of instruction-by-instruction advancing
543	* up to a EIP wrap-around, we know that CS.LIM is 4G-1 because the limit
544	* must be using 4KB granularity and the previous instruction was fine.
545	*/
546	uint8_t const idxRegPc = iemNativeRegAllocTmpForGuestReg(pReNative, &off, kIemNativeGstReg_Pc,
547	kIemNativeGstRegUse_ReadOnly);
548	uint8_t const idxRegCsLim = iemNativeRegAllocTmpForGuestReg(pReNative, &off, IEMNATIVEGSTREG_SEG_LIMIT(X86_SREG_CS),
549	kIemNativeGstRegUse_ReadOnly);
550	#ifdef RT_ARCH_AMD64
551	uint8_t * const pbCodeBuf = iemNativeInstrBufEnsure(pReNative, off, 8);
552	#elif defined(RT_ARCH_ARM64)
553	uint32_t * const pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 2);
554	#else
555	# error "Port me"
556	#endif
557
558	if (cbInstr != 1)
559	{
560	uint8_t const idxRegTmp = iemNativeRegAllocTmp(pReNative, &off);
561
562	/*
563	* 1. idxRegTmp = idxRegPc + cbInstr;
564	* 2. if idxRegTmp > idxRegCsLim then raise #GP(0).
565	*/
566	#ifdef RT_ARCH_AMD64
567	/* 1. lea tmp32, [Pc + cbInstr - 1] */
568	if (idxRegTmp >= 8 \|\| idxRegPc >= 8)
569	pbCodeBuf[off++] = (idxRegTmp < 8 ? 0 : X86_OP_REX_R) \| (idxRegPc < 8 ? 0 : X86_OP_REX_B);
570	pbCodeBuf[off++] = 0x8d;
571	pbCodeBuf[off++] = X86_MODRM_MAKE(X86_MOD_MEM1, idxRegTmp & 7, idxRegPc & 7);
572	if ((idxRegPc & 7) == X86_GREG_xSP)
573	pbCodeBuf[off++] = X86_SIB_MAKE(idxRegPc & 7, 4 /no index/, 0);
574	pbCodeBuf[off++] = cbInstr - 1;
575
576	/* 2. cmp tmp32(r), CsLim(r/m). */
577	if (idxRegTmp >= 8 \|\| idxRegCsLim >= 8)
578	pbCodeBuf[off++] = (idxRegTmp < 8 ? 0 : X86_OP_REX_R) \| (idxRegCsLim < 8 ? 0 : X86_OP_REX_B);
579	pbCodeBuf[off++] = 0x3b;
580	pbCodeBuf[off++] = X86_MODRM_MAKE(X86_MOD_REG, idxRegTmp & 7, idxRegCsLim & 7);
581
582	#elif defined(RT_ARCH_ARM64)
583	/* 1. add tmp32, Pc, #cbInstr-1 */
584	pu32CodeBuf[off++] = Armv8A64MkInstrAddSubUImm12(false /fSub/, idxRegTmp, idxRegPc, cbInstr - 1, false /f64Bit/);
585	/* 2. cmp tmp32, CsLim */
586	pu32CodeBuf[off++] = Armv8A64MkInstrAddSubReg(true /fSub/, ARMV8_A64_REG_XZR, idxRegTmp, idxRegCsLim,
587	false /f64Bit/, true /fSetFlags/);
588
589	#endif
590	iemNativeRegFreeTmp(pReNative, idxRegTmp);
591	}
592	else
593	{
594	/*
595	* Here we can skip step 1 and compare PC and CS.LIM directly.
596	*/
597	#ifdef RT_ARCH_AMD64
598	/* 2. cmp eip(r), CsLim(r/m). */
599	if (idxRegPc >= 8 \|\| idxRegCsLim >= 8)
600	pbCodeBuf[off++] = (idxRegPc < 8 ? 0 : X86_OP_REX_R) \| (idxRegCsLim < 8 ? 0 : X86_OP_REX_B);
601	pbCodeBuf[off++] = 0x3b;
602	pbCodeBuf[off++] = X86_MODRM_MAKE(X86_MOD_REG, idxRegPc & 7, idxRegCsLim & 7);
603
604	#elif defined(RT_ARCH_ARM64)
605	/* 2. cmp Pc, CsLim */
606	pu32CodeBuf[off++] = Armv8A64MkInstrAddSubReg(true /fSub/, ARMV8_A64_REG_XZR, idxRegPc, idxRegCsLim,
607	false /f64Bit/, true /fSetFlags/);
608
609	#endif
610	}
611
612	/* 3. Jump if greater. */
613	off = iemNativeEmitTbExitJa<kIemNativeLabelType_RaiseGp0>(pReNative, off);
614
615	iemNativeRegFreeTmp(pReNative, idxRegCsLim);
616	iemNativeRegFreeTmp(pReNative, idxRegPc);
617	return off;
618	}
619
620
621	/**
622	* Macro that considers whether we need CS.LIM checking after a branch or
623	* crossing over to a new page.
624	*/
625	#define BODY_CONSIDER_CS_LIM_CHECKING(a_pTb, a_cbInstr) \
626	RT_NOREF(a_cbInstr); \
627	off = iemNativeEmitBltInConsiderLimChecking(pReNative, off)
628
629	#define LIVENESS_CONSIDER_CS_LIM_CHECKING(a_pOutgoing) \
630	IEM_LIVENESS_RAW_SEG_LIMIT_INPUT(a_pOutgoing, X86_SREG_CS); \
631	IEM_LIVENESS_RAW_SEG_BASE_INPUT(a_pOutgoing, X86_SREG_CS)
632
633	DECL_FORCE_INLINE(uint32_t)
634	iemNativeEmitBltInConsiderLimChecking(PIEMRECOMPILERSTATE pReNative, uint32_t off)
635	{
636	#ifdef VBOX_STRICT
637	off = iemNativeEmitMarker(pReNative, off, 0x80000002);
638	#endif
639
640	#ifdef IEMNATIVE_WITH_DELAYED_PC_UPDATING
641	Assert(pReNative->Core.offPc == 0);
642	#endif
643
644	/*
645	* This check must match the ones in the iem in iemGetTbFlagsForCurrentPc
646	* exactly:
647	*
648	* int64_t const offFromLim = (int64_t)pVCpu->cpum.GstCtx.cs.u32Limit - (int64_t)pVCpu->cpum.GstCtx.eip;
649	* if (offFromLim >= X86_PAGE_SIZE + 16 - (int32_t)(pVCpu->cpum.GstCtx.cs.u64Base & GUEST_PAGE_OFFSET_MASK))
650	* return fRet;
651	* return fRet \| IEMTB_F_CS_LIM_CHECKS;
652	*
653	*
654	* We need EIP, CS.LIM and CS.BASE here.
655	*/
656
657	/* Calculate the offFromLim first: */
658	uint8_t const idxRegPc = iemNativeRegAllocTmpForGuestReg(pReNative, &off, kIemNativeGstReg_Pc,
659	kIemNativeGstRegUse_ReadOnly);
660	uint8_t const idxRegCsLim = iemNativeRegAllocTmpForGuestReg(pReNative, &off, IEMNATIVEGSTREG_SEG_LIMIT(X86_SREG_CS),
661	kIemNativeGstRegUse_ReadOnly);
662	uint8_t const idxRegLeft = iemNativeRegAllocTmp(pReNative, &off);
663
664	#ifdef RT_ARCH_ARM64
665	uint32_t *pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 1);
666	pu32CodeBuf[off++] = Armv8A64MkInstrSubReg(idxRegLeft, idxRegCsLim, idxRegPc);
667	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
668	#else
669	off = iemNativeEmitLoadGprFromGpr(pReNative, off, idxRegLeft, idxRegCsLim);
670	off = iemNativeEmitSubTwoGprs(pReNative, off, idxRegLeft, idxRegPc);
671	#endif
672
673	iemNativeRegFreeTmp(pReNative, idxRegCsLim);
674	iemNativeRegFreeTmp(pReNative, idxRegPc);
675
676	/* Calculate the threshold level (right side). */
677	uint8_t const idxRegCsBase = iemNativeRegAllocTmpForGuestReg(pReNative, &off, IEMNATIVEGSTREG_SEG_BASE(X86_SREG_CS),
678	kIemNativeGstRegUse_ReadOnly);
679	uint8_t const idxRegRight = iemNativeRegAllocTmp(pReNative, &off);
680
681	#ifdef RT_ARCH_ARM64
682	pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 4);
683	Assert(Armv8A64ConvertImmRImmS2Mask32(11, 0) == GUEST_PAGE_OFFSET_MASK);
684	pu32CodeBuf[off++] = Armv8A64MkInstrAndImm(idxRegRight, idxRegCsBase, 11, 0, false /f64Bit/);
685	pu32CodeBuf[off++] = Armv8A64MkInstrNeg(idxRegRight);
686	pu32CodeBuf[off++] = Armv8A64MkInstrAddUImm12(idxRegRight, idxRegRight, (X86_PAGE_SIZE + 16) / 2);
687	pu32CodeBuf[off++] = Armv8A64MkInstrAddUImm12(idxRegRight, idxRegRight, (X86_PAGE_SIZE + 16) / 2);
688	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
689
690	#else
691	off = iemNativeEmitLoadGprImm32(pReNative, off, idxRegRight, GUEST_PAGE_OFFSET_MASK);
692	off = iemNativeEmitAndGpr32ByGpr32(pReNative, off, idxRegRight, idxRegCsBase);
693	off = iemNativeEmitNegGpr(pReNative, off, idxRegRight);
694	off = iemNativeEmitAddGprImm(pReNative, off, idxRegRight, X86_PAGE_SIZE + 16);
695	#endif
696
697	iemNativeRegFreeTmp(pReNative, idxRegCsBase);
698
699	/* Compare the two and jump out if we're too close to the limit. */
700	off = iemNativeEmitCmpGprWithGpr(pReNative, off, idxRegLeft, idxRegRight);
701	off = iemNativeEmitTbExitJl<kIemNativeLabelType_NeedCsLimChecking>(pReNative, off);
702
703	iemNativeRegFreeTmp(pReNative, idxRegRight);
704	iemNativeRegFreeTmp(pReNative, idxRegLeft);
705	return off;
706	}
707
708
709
710	/**
711	* Macro that implements opcode (re-)checking.
712	*/
713	#define BODY_CHECK_OPCODES(a_pTb, a_idxRange, a_offRange, a_cbInstr) \
714	RT_NOREF(a_cbInstr); \
715	off = iemNativeEmitBltInCheckOpcodes(pReNative, off, (a_pTb), (a_idxRange), (a_offRange))
716
717	#define LIVENESS_CHECK_OPCODES(a_pOutgoing) ((void)0)
718
719	#if 0 /* debugging aid */
720	bool g_fBpOnObsoletion = false;
721	# define BP_ON_OBSOLETION g_fBpOnObsoletion
722	#else
723	# define BP_ON_OBSOLETION 0
724	#endif
725
726	DECL_FORCE_INLINE(uint32_t)
727	iemNativeEmitBltInCheckOpcodes(PIEMRECOMPILERSTATE pReNative, uint32_t off, PCIEMTB pTb, uint8_t idxRange, uint16_t offRange)
728	{
729	Assert(idxRange < pTb->cRanges && pTb->cRanges <= RT_ELEMENTS(pTb->aRanges));
730	Assert(offRange < pTb->aRanges[idxRange].cbOpcodes);
731	#ifdef VBOX_STRICT
732	off = iemNativeEmitMarker(pReNative, off, 0x80000003);
733	#endif
734
735	/*
736	* Where to start and how much to compare.
737	*
738	* Looking at the ranges produced when r160746 was running a DOS VM with TB
739	* logging, the ranges can be anything from 1 byte to at least 0x197 bytes,
740	* with the 6, 5, 4, 7, 8, 40, 3, 2, 9 and 10 being the top 10 in the sample.
741	*
742	* The top 10 for the early boot phase of a 64-bit debian 9.4 VM: 5, 9, 8,
743	* 12, 10, 11, 6, 13, 15 and 16. Max 0x359 bytes. Same revision as above.
744	*/
745	uint16_t offPage = pTb->aRanges[idxRange].offPhysPage + offRange;
746	uint16_t cbLeft = pTb->aRanges[idxRange].cbOpcodes - offRange;
747	Assert(cbLeft > 0);
748	uint8_t const *pbOpcodes = &pTb->pabOpcodes[pTb->aRanges[idxRange].offOpcodes + offRange];
749	uint32_t offConsolidatedJump = UINT32_MAX;
750
751	#ifdef RT_ARCH_AMD64
752	/* AMD64/x86 offers a bunch of options. Smaller stuff will can be
753	completely inlined, for larger we use REPE CMPS. */
754	# define CHECK_OPCODES_CMP_IMMXX(a_idxReg, a_bOpcode) /* cost: 3 bytes */ do { \
755	pbCodeBuf[off++] = a_bOpcode; \
756	Assert(offPage < 127); \
757	pbCodeBuf[off++] = X86_MODRM_MAKE(X86_MOD_MEM1, 7, a_idxReg); \
758	pbCodeBuf[off++] = RT_BYTE1(offPage); \
759	} while (0)
760
761	# define CHECK_OPCODES_CMP_JMP() /* cost: 7 bytes first time, then 2 bytes */ do { \
762	if (offConsolidatedJump != UINT32_MAX) \
763	{ \
764	int32_t const offDisp = (int32_t)offConsolidatedJump - (int32_t)(off + 2); \
765	Assert(offDisp >= -128); \
766	pbCodeBuf[off++] = 0x75; /* jnz near */ \
767	pbCodeBuf[off++] = (uint8_t)offDisp; \
768	} \
769	else \
770	{ \
771	pbCodeBuf[off++] = 0x74; /* jz near +5 */ \
772	offConsolidatedJump = ++off; \
773	if (BP_ON_OBSOLETION) pbCodeBuf[off++] = 0xcc; \
774	off = iemNativeEmitTbExitEx<kIemNativeLabelType_ObsoleteTb, false /a_fActuallyExitingTb/>(pReNative, \
775	pbCodeBuf, off); \
776	pbCodeBuf[offConsolidatedJump - 1] = off - offConsolidatedJump; \
777	} \
778	} while (0)
779
780	# define CHECK_OPCODES_CMP_IMM32(a_idxReg) /* cost: 3+4+2 = 9 */ do { \
781	CHECK_OPCODES_CMP_IMMXX(a_idxReg, 0x81); \
782	pbCodeBuf[off++] = *pbOpcodes++; \
783	pbCodeBuf[off++] = *pbOpcodes++; \
784	pbCodeBuf[off++] = *pbOpcodes++; \
785	pbCodeBuf[off++] = *pbOpcodes++; \
786	cbLeft -= 4; \
787	offPage += 4; \
788	CHECK_OPCODES_CMP_JMP(); \
789	} while (0)
790
791	# define CHECK_OPCODES_CMP_IMM16(a_idxReg) /* cost: 1+3+2+2 = 8 */ do { \
792	pbCodeBuf[off++] = X86_OP_PRF_SIZE_OP; \
793	CHECK_OPCODES_CMP_IMMXX(a_idxReg, 0x81); \
794	pbCodeBuf[off++] = *pbOpcodes++; \
795	pbCodeBuf[off++] = *pbOpcodes++; \
796	cbLeft -= 2; \
797	offPage += 2; \
798	CHECK_OPCODES_CMP_JMP(); \
799	} while (0)
800
801	# define CHECK_OPCODES_CMP_IMM8(a_idxReg) /* cost: 3+1+2 = 6 */ do { \
802	CHECK_OPCODES_CMP_IMMXX(a_idxReg, 0x80); \
803	pbCodeBuf[off++] = *pbOpcodes++; \
804	cbLeft -= 1; \
805	offPage += 1; \
806	CHECK_OPCODES_CMP_JMP(); \
807	} while (0)
808
809	# define CHECK_OPCODES_CMPSX(a_bOpcode, a_cbToSubtract, a_bPrefix) /* cost: 2+2 = 4 */ do { \
810	if (a_bPrefix) \
811	pbCodeBuf[off++] = (a_bPrefix); \
812	pbCodeBuf[off++] = (a_bOpcode); \
813	CHECK_OPCODES_CMP_JMP(); \
814	cbLeft -= (a_cbToSubtract); \
815	} while (0)
816
817	# define CHECK_OPCODES_ECX_IMM(a_uValue) /* cost: 5 */ do { \
818	pbCodeBuf[off++] = 0xb8 + X86_GREG_xCX; \
819	pbCodeBuf[off++] = RT_BYTE1(a_uValue); \
820	pbCodeBuf[off++] = RT_BYTE2(a_uValue); \
821	pbCodeBuf[off++] = RT_BYTE3(a_uValue); \
822	pbCodeBuf[off++] = RT_BYTE4(a_uValue); \
823	} while (0)
824
825	if (cbLeft <= 24)
826	{
827	uint8_t const idxRegTmp = iemNativeRegAllocTmpEx(pReNative, &off,
828	( RT_BIT_32(X86_GREG_xAX)
829	\| RT_BIT_32(X86_GREG_xCX)
830	\| RT_BIT_32(X86_GREG_xDX)
831	\| RT_BIT_32(X86_GREG_xBX)
832	\| RT_BIT_32(X86_GREG_xSI)
833	\| RT_BIT_32(X86_GREG_xDI))
834	& ~IEMNATIVE_REG_FIXED_MASK); /* pick reg not requiring rex prefix */
835	off = iemNativeEmitLoadGprFromVCpuU64(pReNative, off, idxRegTmp, RT_UOFFSETOF(VMCPUCC, iem.s.pbInstrBuf));
836	if (offPage >= 128 - cbLeft)
837	{
838	off = iemNativeEmitAddGprImm(pReNative, off, idxRegTmp, offPage & ~(uint16_t)3);
839	offPage &= 3;
840	}
841
842	uint8_t * const pbCodeBuf = iemNativeInstrBufEnsure(pReNative, off, 6 + 14 + 54 + 8 + 6 + BP_ON_OBSOLETION /* = 88 */
843	+ IEMNATIVE_MAX_POSTPONED_EFLAGS_INSTRUCTIONS);
844
845	if (cbLeft > 8)
846	switch (offPage & 3)
847	{
848	case 0:
849	break;
850	case 1: /* cost: 6 + 8 = 14 */
851	CHECK_OPCODES_CMP_IMM8(idxRegTmp);
852	RT_FALL_THRU();
853	case 2: /* cost: 8 */
854	CHECK_OPCODES_CMP_IMM16(idxRegTmp);
855	break;
856	case 3: /* cost: 6 */
857	CHECK_OPCODES_CMP_IMM8(idxRegTmp);
858	break;
859	}
860
861	while (cbLeft >= 4)
862	CHECK_OPCODES_CMP_IMM32(idxRegTmp); /* max iteration: 24/4 = 6; --> cost: 6 * 9 = 54 */
863
864	if (cbLeft >= 2)
865	CHECK_OPCODES_CMP_IMM16(idxRegTmp); /* cost: 8 */
866	if (cbLeft)
867	CHECK_OPCODES_CMP_IMM8(idxRegTmp); /* cost: 6 */
868
869	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
870	iemNativeRegFreeTmp(pReNative, idxRegTmp);
871	}
872	else
873	{
874	/* RDI = &pbInstrBuf[offPage] */
875	uint8_t const idxRegDi = iemNativeRegAllocTmpEx(pReNative, &off, RT_BIT_32(X86_GREG_xDI));
876	off = iemNativeEmitLoadGprFromVCpuU64(pReNative, off, idxRegDi, RT_UOFFSETOF(VMCPU, iem.s.pbInstrBuf));
877	if (offPage != 0)
878	off = iemNativeEmitAddGprImm(pReNative, off, idxRegDi, offPage);
879
880	/* RSI = pbOpcodes */
881	uint8_t const idxRegSi = iemNativeRegAllocTmpEx(pReNative, &off, RT_BIT_32(X86_GREG_xSI));
882	off = iemNativeEmitLoadGprImm64(pReNative, off, idxRegSi, (uintptr_t)pbOpcodes);
883
884	/* RCX = counts. */
885	uint8_t const idxRegCx = iemNativeRegAllocTmpEx(pReNative, &off, RT_BIT_32(X86_GREG_xCX));
886
887	uint8_t * const pbCodeBuf = iemNativeInstrBufEnsure(pReNative, off, 6 + 10 + 5 + 5 + 3 + 4 + 3 + BP_ON_OBSOLETION /= 36/
888	+ IEMNATIVE_MAX_POSTPONED_EFLAGS_INSTRUCTIONS);
889
890	/** @todo profile and optimize this further. Maybe an idea to align by
891	* offPage if the two cannot be reconsidled. */
892	/* Align by the page offset, so that at least one of the accesses are naturally aligned. */
893	switch (offPage & 7) /* max cost: 10 */
894	{
895	case 0:
896	break;
897	case 1: /* cost: 3+4+3 = 10 */
898	CHECK_OPCODES_CMPSX(0xa6, 1, 0);
899	RT_FALL_THRU();
900	case 2: /* cost: 4+3 = 7 */
901	CHECK_OPCODES_CMPSX(0xa7, 2, X86_OP_PRF_SIZE_OP);
902	CHECK_OPCODES_CMPSX(0xa7, 4, 0);
903	break;
904	case 3: /* cost: 3+3 = 6 */
905	CHECK_OPCODES_CMPSX(0xa6, 1, 0);
906	RT_FALL_THRU();
907	case 4: /* cost: 3 */
908	CHECK_OPCODES_CMPSX(0xa7, 4, 0);
909	break;
910	case 5: /* cost: 3+4 = 7 */
911	CHECK_OPCODES_CMPSX(0xa6, 1, 0);
912	RT_FALL_THRU();
913	case 6: /* cost: 4 */
914	CHECK_OPCODES_CMPSX(0xa7, 2, X86_OP_PRF_SIZE_OP);
915	break;
916	case 7: /* cost: 3 */
917	CHECK_OPCODES_CMPSX(0xa6, 1, 0);
918	break;
919	}
920
921	/* Compare qwords: */
922	uint32_t const cQWords = cbLeft >> 3;
923	CHECK_OPCODES_ECX_IMM(cQWords); /* cost: 5 */
924
925	pbCodeBuf[off++] = X86_OP_PRF_REPZ; /* cost: 5 */
926	CHECK_OPCODES_CMPSX(0xa7, 0, X86_OP_REX_W);
927	cbLeft &= 7;
928
929	if (cbLeft & 4)
930	CHECK_OPCODES_CMPSX(0xa7, 4, 0); /* cost: 3 */
931	if (cbLeft & 2)
932	CHECK_OPCODES_CMPSX(0xa7, 2, X86_OP_PRF_SIZE_OP); /* cost: 4 */
933	if (cbLeft & 1)
934	CHECK_OPCODES_CMPSX(0xa6, 1, 0); /* cost: 3 */
935
936	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
937	iemNativeRegFreeTmp(pReNative, idxRegCx);
938	iemNativeRegFreeTmp(pReNative, idxRegSi);
939	iemNativeRegFreeTmp(pReNative, idxRegDi);
940	}
941
942	#elif defined(RT_ARCH_ARM64)
943	/* We need pbInstrBuf in a register, whatever we do. */
944	uint8_t const idxRegSrc1Ptr = iemNativeRegAllocTmp(pReNative, &off);
945	off = iemNativeEmitLoadGprFromVCpuU64(pReNative, off, idxRegSrc1Ptr, RT_UOFFSETOF(VMCPU, iem.s.pbInstrBuf));
946
947	/* We also need at least one more register for holding bytes & words we
948	load via pbInstrBuf. */
949	uint8_t const idxRegSrc1Val = iemNativeRegAllocTmp(pReNative, &off);
950
951	uint32_t * const pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 64 + IEMNATIVE_MAX_POSTPONED_EFLAGS_INSTRUCTIONS * 2);
952
953	/* One byte compare can be done with the opcode byte as an immediate. We'll
954	do this to uint16_t align src1. */
955	bool fPendingJmp = RT_BOOL(offPage & 1);
956	if (fPendingJmp)
957	{
958	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Byte, idxRegSrc1Val, idxRegSrc1Ptr, offPage);
959	pu32CodeBuf[off++] = Armv8A64MkInstrCmpUImm12(idxRegSrc1Val, pbOpcodes++, false /f64Bit*/);
960	offPage += 1;
961	cbLeft -= 1;
962	}
963
964	if (cbLeft > 0)
965	{
966	/* We need a register for holding the opcode bytes we're comparing with,
967	as CCMP only has a 5-bit immediate form and thus cannot hold bytes. */
968	uint8_t const idxRegSrc2Val = iemNativeRegAllocTmp(pReNative, &off);
969
970	/* Word (uint32_t) aligning the src1 pointer is best done using a 16-bit constant load. */
971	if ((offPage & 3) && cbLeft >= 2)
972	{
973	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Half, idxRegSrc1Val, idxRegSrc1Ptr, offPage / 2);
974	pu32CodeBuf[off++] = Armv8A64MkInstrMovZ(idxRegSrc2Val, RT_MAKE_U16(pbOpcodes[0], pbOpcodes[1]));
975	if (fPendingJmp)
976	pu32CodeBuf[off++] = Armv8A64MkInstrCCmpReg(idxRegSrc1Val, idxRegSrc2Val,
977	ARMA64_NZCV_F_N0_Z0_C0_V0, kArmv8InstrCond_Eq, false /f64Bit/);
978	else
979	{
980	pu32CodeBuf[off++] = Armv8A64MkInstrCmpReg(idxRegSrc1Val, idxRegSrc2Val, false /f64Bit/);
981	fPendingJmp = true;
982	}
983	pbOpcodes += 2;
984	offPage += 2;
985	cbLeft -= 2;
986	}
987
988	/* DWord (uint64_t) aligning the src2 pointer. We use a 32-bit constant here for simplicitly. */
989	if ((offPage & 7) && cbLeft >= 4)
990	{
991	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Word, idxRegSrc1Val, idxRegSrc1Ptr, offPage / 4);
992	off = iemNativeEmitLoadGpr32ImmEx(pu32CodeBuf, off, idxRegSrc2Val,
993	RT_MAKE_U32_FROM_MSB_U8(pbOpcodes[3], pbOpcodes[2], pbOpcodes[1], pbOpcodes[0]));
994	if (fPendingJmp)
995	pu32CodeBuf[off++] = Armv8A64MkInstrCCmpReg(idxRegSrc1Val, idxRegSrc2Val,
996	ARMA64_NZCV_F_N0_Z0_C0_V0, kArmv8InstrCond_Eq, false /f64Bit/);
997	else
998	{
999	pu32CodeBuf[off++] = Armv8A64MkInstrCmpReg(idxRegSrc1Val, idxRegSrc2Val, false /f64Bit/);
1000	fPendingJmp = true;
1001	}
1002	pbOpcodes += 4;
1003	offPage += 4;
1004	cbLeft -= 4;
1005	}
1006
1007	/*
1008	* If we've got 16 bytes or more left, switch to memcmp-style.
1009	*/
1010	if (cbLeft >= 16)
1011	{
1012	/* We need a pointer to the copy of the original opcode bytes. */
1013	uint8_t const idxRegSrc2Ptr = iemNativeRegAllocTmp(pReNative, &off);
1014	off = iemNativeEmitLoadGprImmEx(pu32CodeBuf, off, idxRegSrc2Ptr, (uintptr_t)pbOpcodes);
1015
1016	/* If there are more than 32 bytes to compare we create a loop, for
1017	which we'll need a loop register. */
1018	if (cbLeft >= 64)
1019	{
1020	if (fPendingJmp)
1021	{
1022	off = iemNativeEmitTbExitJccEx<kIemNativeLabelType_ObsoleteTb>(pReNative, pu32CodeBuf, off,
1023	kArmv8InstrCond_Ne);
1024	fPendingJmp = false;
1025	}
1026
1027	uint8_t const idxRegLoop = iemNativeRegAllocTmp(pReNative, &off);
1028	uint16_t const cLoops = cbLeft / 32;
1029	cbLeft = cbLeft % 32;
1030	pbOpcodes += cLoops * 32;
1031	pu32CodeBuf[off++] = Armv8A64MkInstrMovZ(idxRegLoop, cLoops);
1032
1033	if (offPage != 0) /** @todo optimize out this instruction. */
1034	{
1035	pu32CodeBuf[off++] = Armv8A64MkInstrAddUImm12(idxRegSrc1Ptr, idxRegSrc1Ptr, offPage);
1036	offPage = 0;
1037	}
1038
1039	uint32_t const offLoopStart = off;
1040	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Dword, idxRegSrc1Val, idxRegSrc1Ptr, 0);
1041	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Dword, idxRegSrc2Val, idxRegSrc2Ptr, 0);
1042	pu32CodeBuf[off++] = Armv8A64MkInstrCmpReg(idxRegSrc1Val, idxRegSrc2Val);
1043
1044	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Dword, idxRegSrc1Val, idxRegSrc1Ptr, 1);
1045	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Dword, idxRegSrc2Val, idxRegSrc2Ptr, 1);
1046	pu32CodeBuf[off++] = Armv8A64MkInstrCCmpReg(idxRegSrc1Val, idxRegSrc2Val,
1047	ARMA64_NZCV_F_N0_Z0_C0_V0, kArmv8InstrCond_Eq);
1048
1049	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Dword, idxRegSrc1Val, idxRegSrc1Ptr, 2);
1050	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Dword, idxRegSrc2Val, idxRegSrc2Ptr, 2);
1051	pu32CodeBuf[off++] = Armv8A64MkInstrCCmpReg(idxRegSrc1Val, idxRegSrc2Val,
1052	ARMA64_NZCV_F_N0_Z0_C0_V0, kArmv8InstrCond_Eq);
1053
1054	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Dword, idxRegSrc1Val, idxRegSrc1Ptr, 3);
1055	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Dword, idxRegSrc2Val, idxRegSrc2Ptr, 3);
1056	pu32CodeBuf[off++] = Armv8A64MkInstrCCmpReg(idxRegSrc1Val, idxRegSrc2Val,
1057	ARMA64_NZCV_F_N0_Z0_C0_V0, kArmv8InstrCond_Eq);
1058
1059	off = iemNativeEmitTbExitJccEx<kIemNativeLabelType_ObsoleteTb>(pReNative, pu32CodeBuf, off, kArmv8InstrCond_Ne);
1060
1061	/* Advance and loop. */
1062	pu32CodeBuf[off++] = Armv8A64MkInstrAddUImm12(idxRegSrc1Ptr, idxRegSrc1Ptr, 0x20);
1063	pu32CodeBuf[off++] = Armv8A64MkInstrAddUImm12(idxRegSrc2Ptr, idxRegSrc2Ptr, 0x20);
1064	pu32CodeBuf[off++] = Armv8A64MkInstrSubUImm12(idxRegLoop, idxRegLoop, 1, false /f64Bit/, true /fSetFlags/);
1065	pu32CodeBuf[off] = Armv8A64MkInstrBCond(kArmv8InstrCond_Ne, (int32_t)offLoopStart - (int32_t)off);
1066	off++;
1067
1068	iemNativeRegFreeTmp(pReNative, idxRegLoop);
1069	}
1070
1071	/* Deal with any remaining dwords (uint64_t). There can be up to
1072	three if we looped and four if we didn't. */
1073	uint32_t offSrc2 = 0;
1074	while (cbLeft >= 8)
1075	{
1076	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Dword, idxRegSrc1Val,
1077	idxRegSrc1Ptr, offPage / 8);
1078	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Dword, idxRegSrc2Val,
1079	idxRegSrc2Ptr, offSrc2 / 8);
1080	if (fPendingJmp)
1081	pu32CodeBuf[off++] = Armv8A64MkInstrCCmpReg(idxRegSrc1Val, idxRegSrc2Val,
1082	ARMA64_NZCV_F_N0_Z0_C0_V0, kArmv8InstrCond_Eq);
1083	else
1084	{
1085	pu32CodeBuf[off++] = Armv8A64MkInstrCmpReg(idxRegSrc1Val, idxRegSrc2Val);
1086	fPendingJmp = true;
1087	}
1088	pbOpcodes += 8;
1089	offPage += 8;
1090	offSrc2 += 8;
1091	cbLeft -= 8;
1092	}
1093
1094	iemNativeRegFreeTmp(pReNative, idxRegSrc2Ptr);
1095	/* max cost thus far: memcmp-loop=43 vs memcmp-no-loop=30 */
1096	}
1097	/*
1098	* Otherwise, we compare with constants and merge with the general mop-up.
1099	*/
1100	else
1101	{
1102	while (cbLeft >= 8)
1103	{
1104	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Dword, idxRegSrc1Val, idxRegSrc1Ptr,
1105	offPage / 8);
1106	off = iemNativeEmitLoadGprImmEx(pu32CodeBuf, off, idxRegSrc2Val,
1107	RT_MAKE_U64_FROM_MSB_U8(pbOpcodes[7], pbOpcodes[6], pbOpcodes[5], pbOpcodes[4],
1108	pbOpcodes[3], pbOpcodes[2], pbOpcodes[1], pbOpcodes[0]));
1109	if (fPendingJmp)
1110	pu32CodeBuf[off++] = Armv8A64MkInstrCCmpReg(idxRegSrc1Val, idxRegSrc2Val,
1111	ARMA64_NZCV_F_N0_Z0_C0_V0, kArmv8InstrCond_Eq, true /f64Bit/);
1112	else
1113	{
1114	pu32CodeBuf[off++] = Armv8A64MkInstrCmpReg(idxRegSrc1Val, idxRegSrc2Val, true /f64Bit/);
1115	fPendingJmp = true;
1116	}
1117	pbOpcodes += 8;
1118	offPage += 8;
1119	cbLeft -= 8;
1120	}
1121	/* max cost thus far: 21 */
1122	}
1123
1124	/* Deal with any remaining bytes (7 or less). */
1125	Assert(cbLeft < 8);
1126	if (cbLeft >= 4)
1127	{
1128	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Word, idxRegSrc1Val, idxRegSrc1Ptr,
1129	offPage / 4);
1130	off = iemNativeEmitLoadGpr32ImmEx(pu32CodeBuf, off, idxRegSrc2Val,
1131	RT_MAKE_U32_FROM_MSB_U8(pbOpcodes[3], pbOpcodes[2], pbOpcodes[1], pbOpcodes[0]));
1132	if (fPendingJmp)
1133	pu32CodeBuf[off++] = Armv8A64MkInstrCCmpReg(idxRegSrc1Val, idxRegSrc2Val,
1134	ARMA64_NZCV_F_N0_Z0_C0_V0, kArmv8InstrCond_Eq, false /f64Bit/);
1135	else
1136	{
1137	pu32CodeBuf[off++] = Armv8A64MkInstrCmpReg(idxRegSrc1Val, idxRegSrc2Val, false /f64Bit/);
1138	fPendingJmp = true;
1139	}
1140	pbOpcodes += 4;
1141	offPage += 4;
1142	cbLeft -= 4;
1143
1144	}
1145
1146	if (cbLeft >= 2)
1147	{
1148	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Half, idxRegSrc1Val, idxRegSrc1Ptr,
1149	offPage / 2);
1150	pu32CodeBuf[off++] = Armv8A64MkInstrMovZ(idxRegSrc2Val, RT_MAKE_U16(pbOpcodes[0], pbOpcodes[1]));
1151	if (fPendingJmp)
1152	pu32CodeBuf[off++] = Armv8A64MkInstrCCmpReg(idxRegSrc1Val, idxRegSrc2Val,
1153	ARMA64_NZCV_F_N0_Z0_C0_V0, kArmv8InstrCond_Eq, false /f64Bit/);
1154	else
1155	{
1156	pu32CodeBuf[off++] = Armv8A64MkInstrCmpReg(idxRegSrc1Val, idxRegSrc2Val, false /f64Bit/);
1157	fPendingJmp = true;
1158	}
1159	pbOpcodes += 2;
1160	offPage += 2;
1161	cbLeft -= 2;
1162	}
1163
1164	if (cbLeft > 0)
1165	{
1166	Assert(cbLeft == 1);
1167	pu32CodeBuf[off++] = Armv8A64MkInstrStLdRUOff(kArmv8A64InstrLdStType_Ld_Byte, idxRegSrc1Val, idxRegSrc1Ptr, offPage);
1168	if (fPendingJmp)
1169	{
1170	pu32CodeBuf[off++] = Armv8A64MkInstrMovZ(idxRegSrc2Val, pbOpcodes[0]);
1171	pu32CodeBuf[off++] = Armv8A64MkInstrCCmpReg(idxRegSrc1Val, idxRegSrc2Val,
1172	ARMA64_NZCV_F_N0_Z0_C0_V0, kArmv8InstrCond_Eq, false /f64Bit/);
1173	}
1174	else
1175	{
1176	pu32CodeBuf[off++] = Armv8A64MkInstrCmpUImm12(idxRegSrc1Val, pbOpcodes[0], false /f64Bit/);
1177	fPendingJmp = true;
1178	}
1179	pbOpcodes += 1;
1180	offPage += 1;
1181	cbLeft -= 1;
1182	}
1183
1184	iemNativeRegFreeTmp(pReNative, idxRegSrc2Val);
1185	}
1186	Assert(cbLeft == 0);
1187
1188	/*
1189	* Finally, the branch on difference.
1190	*/
1191	if (fPendingJmp)
1192	off = iemNativeEmitTbExitJnz<kIemNativeLabelType_ObsoleteTb>(pReNative, off);
1193
1194	RT_NOREF(pu32CodeBuf, cbLeft, offPage, pbOpcodes, offConsolidatedJump);
1195
1196	/* max costs: memcmp-loop=54; memcmp-no-loop=41; only-src1-ptr=32 */
1197	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1198	iemNativeRegFreeTmp(pReNative, idxRegSrc1Val);
1199	iemNativeRegFreeTmp(pReNative, idxRegSrc1Ptr);
1200
1201	#else
1202	# error "Port me"
1203	#endif
1204	return off;
1205	}
1206
1207
1208
1209	/**
1210	* Macro that implements PC check after a conditional branch.
1211	*/
1212	#define BODY_CHECK_PC_AFTER_BRANCH(a_pTb, a_idxRange, a_offRange, a_cbInstr) \
1213	RT_NOREF(a_cbInstr); \
1214	off = iemNativeEmitBltInCheckPcAfterBranch(pReNative, off, a_pTb, a_idxRange, a_offRange)
1215
1216	#define LIVENESS_CHECK_PC_AFTER_BRANCH(a_pOutgoing, a_pCallEntry) \
1217	if (!IEM_F_MODE_X86_IS_FLAT((uint32_t)(a_pCallEntry)->auParams[0] >> 8)) \
1218	IEM_LIVENESS_RAW_SEG_BASE_INPUT(a_pOutgoing, X86_SREG_CS); \
1219	else do { } while (0)
1220
1221	DECL_FORCE_INLINE(uint32_t)
1222	iemNativeEmitBltInCheckPcAfterBranch(PIEMRECOMPILERSTATE pReNative, uint32_t off, PCIEMTB pTb,
1223	uint8_t idxRange, uint16_t offRange)
1224	{
1225	#ifdef VBOX_STRICT
1226	off = iemNativeEmitMarker(pReNative, off, 0x80000004);
1227	#endif
1228
1229	#ifdef IEMNATIVE_WITH_DELAYED_PC_UPDATING
1230	Assert(pReNative->Core.offPc == 0);
1231	#endif
1232
1233	/*
1234	* The GCPhysRangePageWithOffset value in the threaded function is a fixed
1235	* constant for us here.
1236	*
1237	* We can pretend that iem.s.cbInstrBufTotal is X86_PAGE_SIZE here, because
1238	* it serves no purpose as a CS.LIM, if that's needed we've just performed
1239	* it, and as long as we don't implement code TLB reload code here there is
1240	* no point in checking that the TLB data we're using is still valid.
1241	*
1242	* What we to do is.
1243	* 1. Calculate the FLAT PC (RIP + CS.BASE).
1244	* 2. Subtract iem.s.uInstrBufPc from it and getting 'off'.
1245	* 3. The 'off' must be less than X86_PAGE_SIZE/cbInstrBufTotal or
1246	* we're in the wrong spot and need to find a new TB.
1247	* 4. Add 'off' to iem.s.GCPhysInstrBuf and compare with the
1248	* GCPhysRangePageWithOffset constant mentioned above.
1249	*
1250	* The adding of CS.BASE to RIP can be skipped in the first step if we're
1251	* in 64-bit code or flat 32-bit.
1252	*/
1253
1254	/* Allocate registers for step 1. Get the shadowed stuff before allocating
1255	the temp register, so we don't accidentally clobber something we'll be
1256	needing again immediately. This is why we get idxRegCsBase here. */
1257	uint8_t const idxRegPc = iemNativeRegAllocTmpForGuestReg(pReNative, &off, kIemNativeGstReg_Pc,
1258	kIemNativeGstRegUse_ReadOnly);
1259	uint8_t const idxRegCsBase = IEM_F_MODE_X86_IS_FLAT(pReNative->fExec) ? UINT8_MAX
1260	: iemNativeRegAllocTmpForGuestReg(pReNative, &off, IEMNATIVEGSTREG_SEG_BASE(X86_SREG_CS),
1261	kIemNativeGstRegUse_ReadOnly);
1262
1263	uint8_t const idxRegTmp = iemNativeRegAllocTmp(pReNative, &off);
1264
1265	#ifdef VBOX_STRICT
1266	/* Do assertions before idxRegTmp contains anything. */
1267	Assert(RT_SIZEOFMEMB(VMCPUCC, iem.s.cbInstrBufTotal) == sizeof(uint16_t));
1268	# ifdef RT_ARCH_AMD64
1269	{
1270	uint8_t * const pbCodeBuf = iemNativeInstrBufEnsure(pReNative, off, 8+2+1 + 11+2+1);
1271	/* Assert(pVCpu->cpum.GstCtx.cs.u64Base == 0 \|\| !IEM_F_MODE_X86_IS_FLAT(pReNative->fExec)); */
1272	if (IEM_F_MODE_X86_IS_FLAT(pReNative->fExec))
1273	{
1274	/* cmp r/m64, imm8 */
1275	pbCodeBuf[off++] = X86_OP_REX_W;
1276	pbCodeBuf[off++] = 0x83;
1277	off = iemNativeEmitGprByVCpuDisp(pbCodeBuf, off, 7, RT_UOFFSETOF(VMCPUCC, cpum.GstCtx.cs.u64Base));
1278	pbCodeBuf[off++] = 0;
1279	/* je rel8 */
1280	pbCodeBuf[off++] = 0x74;
1281	pbCodeBuf[off++] = 1;
1282	/* int3 */
1283	pbCodeBuf[off++] = 0xcc;
1284
1285	}
1286
1287	/* Assert(!(pVCpu->iem.s.GCPhysInstrBuf & X86_PAGE_OFFSET_MASK)); - done later by the non-x86 code */
1288	/* test r/m64, imm32 */
1289	pbCodeBuf[off++] = X86_OP_REX_W;
1290	pbCodeBuf[off++] = 0xf7;
1291	off = iemNativeEmitGprByVCpuDisp(pbCodeBuf, off, 0, RT_UOFFSETOF(VMCPUCC, iem.s.GCPhysInstrBuf));
1292	pbCodeBuf[off++] = RT_BYTE1(X86_PAGE_OFFSET_MASK);
1293	pbCodeBuf[off++] = RT_BYTE2(X86_PAGE_OFFSET_MASK);
1294	pbCodeBuf[off++] = RT_BYTE3(X86_PAGE_OFFSET_MASK);
1295	pbCodeBuf[off++] = RT_BYTE4(X86_PAGE_OFFSET_MASK);
1296	/* jz rel8 */
1297	pbCodeBuf[off++] = 0x74;
1298	pbCodeBuf[off++] = 1;
1299	/* int3 */
1300	pbCodeBuf[off++] = 0xcc;
1301	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1302	}
1303	# else
1304
1305	/* Assert(pVCpu->cpum.GstCtx.cs.u64Base == 0 \|\| !IEM_F_MODE_X86_IS_FLAT(pReNative->fExec)); */
1306	if (IEM_F_MODE_X86_IS_FLAT(pReNative->fExec))
1307	{
1308	off = iemNativeEmitLoadGprWithGstRegT<kIemNativeGstReg_CsBase>(pReNative, off, idxRegTmp);
1309	# ifdef RT_ARCH_ARM64
1310	uint32_t * const pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 2);
1311	pu32CodeBuf[off++] = Armv8A64MkInstrCbzCbnz(false /fJmpIfNotZero/, 2, idxRegTmp);
1312	pu32CodeBuf[off++] = Armv8A64MkInstrBrk(0x2004);
1313	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1314	# else
1315	# error "Port me!"
1316	# endif
1317	}
1318	# endif
1319
1320	#endif /* VBOX_STRICT */
1321
1322	/* 1+2. Calculate 'off' first (into idxRegTmp). */
1323	off = iemNativeEmitLoadGprFromVCpuU64(pReNative, off, idxRegTmp, RT_UOFFSETOF(VMCPUCC, iem.s.uInstrBufPc));
1324	if (IEM_F_MODE_X86_IS_FLAT(pReNative->fExec))
1325	{
1326	#ifdef RT_ARCH_ARM64
1327	uint32_t *pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 1);
1328	pu32CodeBuf[off++] = Armv8A64MkInstrSubReg(idxRegTmp, idxRegPc, idxRegTmp);
1329	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1330	#else
1331	off = iemNativeEmitNegGpr(pReNative, off, idxRegTmp);
1332	off = iemNativeEmitAddTwoGprs(pReNative, off, idxRegTmp, idxRegPc);
1333	#endif
1334	}
1335	else
1336	{
1337	#ifdef RT_ARCH_ARM64
1338	uint32_t *pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 2);
1339	pu32CodeBuf[off++] = Armv8A64MkInstrSubReg(idxRegTmp, idxRegCsBase, idxRegTmp);
1340	pu32CodeBuf[off++] = Armv8A64MkInstrAddReg(idxRegTmp, idxRegTmp, idxRegPc);
1341	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1342	#else
1343	off = iemNativeEmitNegGpr(pReNative, off, idxRegTmp);
1344	off = iemNativeEmitAddTwoGprs(pReNative, off, idxRegTmp, idxRegCsBase);
1345	off = iemNativeEmitAddTwoGprs(pReNative, off, idxRegTmp, idxRegPc);
1346	#endif
1347	iemNativeRegFreeTmp(pReNative, idxRegCsBase);
1348	}
1349	iemNativeRegFreeTmp(pReNative, idxRegPc);
1350
1351	/* 3. Check that off is less than X86_PAGE_SIZE/cbInstrBufTotal. */
1352	off = iemNativeEmitCmpGprWithImm(pReNative, off, idxRegTmp, X86_PAGE_SIZE - 1);
1353	off = iemNativeEmitTbExitJa<kIemNativeLabelType_CheckBranchMiss>(pReNative, off);
1354
1355	/* 4. Add iem.s.GCPhysInstrBuf and compare with GCPhysRangePageWithOffset. */
1356	#ifdef RT_ARCH_AMD64
1357	uint8_t * const pbCodeBuf = iemNativeInstrBufEnsure(pReNative, off, 7);
1358	pbCodeBuf[off++] = idxRegTmp < 8 ? X86_OP_REX_W : X86_OP_REX_W \| X86_OP_REX_R;
1359	pbCodeBuf[off++] = 0x03; /* add r64, r/m64 */
1360	off = iemNativeEmitGprByVCpuDisp(pbCodeBuf, off, idxRegTmp, RT_UOFFSETOF(VMCPUCC, iem.s.GCPhysInstrBuf));
1361	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1362
1363	#elif defined(RT_ARCH_ARM64)
1364	uint8_t const idxRegTmp2 = iemNativeRegAllocTmp(pReNative, &off);
1365
1366	off = iemNativeEmitLoadGprFromVCpuU64(pReNative, off, idxRegTmp2, RT_UOFFSETOF(VMCPUCC, iem.s.GCPhysInstrBuf));
1367	uint32_t *pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 1);
1368	pu32CodeBuf[off++] = Armv8A64MkInstrAddReg(idxRegTmp, idxRegTmp, idxRegTmp2);
1369	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1370
1371	# ifdef VBOX_STRICT /* Assert(!(pVCpu->iem.s.GCPhysInstrBuf & X86_PAGE_OFFSET_MASK)); */
1372	off = iemNativeEmitAndGpr32ByImm(pReNative, off, idxRegTmp2, X86_PAGE_OFFSET_MASK, true /fSetFlags/);
1373	off = iemNativeEmitJzToFixed(pReNative, off, off + 2 /* correct for ARM64 */);
1374	off = iemNativeEmitBrk(pReNative, off, 0x2005);
1375	# endif
1376	iemNativeRegFreeTmp(pReNative, idxRegTmp2);
1377	#else
1378	# error "Port me"
1379	#endif
1380
1381	RTGCPHYS const GCPhysRangePageWithOffset = ( iemTbGetRangePhysPageAddr(pTb, idxRange)
1382	\| pTb->aRanges[idxRange].offPhysPage)
1383	+ offRange;
1384	off = iemNativeEmitTbExitIfGprNotEqualImm<kIemNativeLabelType_CheckBranchMiss>(pReNative, off, idxRegTmp,
1385	GCPhysRangePageWithOffset);
1386
1387	iemNativeRegFreeTmp(pReNative, idxRegTmp);
1388	return off;
1389	}
1390
1391
1392	/**
1393	* Macro that implements TLB loading and updating pbInstrBuf updating for an
1394	* instruction crossing into a new page.
1395	*
1396	* This may long jump if we're raising a \#PF, \#GP or similar trouble.
1397	*/
1398	#define BODY_LOAD_TLB_FOR_NEW_PAGE(a_pTb, a_offInstr, a_idxRange, a_cbInstr) \
1399	RT_NOREF(a_cbInstr); \
1400	off = iemNativeEmitBltLoadTlbForNewPage(pReNative, off, pTb, a_idxRange, a_offInstr)
1401
1402	#define LIVENESS_LOAD_TLB_FOR_NEW_PAGE(a_pOutgoing, a_pCallEntry) \
1403	if (!IEM_F_MODE_X86_IS_FLAT((uint32_t)(a_pCallEntry)->auParams[0] >> 8)) \
1404	IEM_LIVENESS_RAW_SEG_BASE_INPUT(a_pOutgoing, X86_SREG_CS); \
1405	else do { } while (0)
1406
1407	DECL_FORCE_INLINE(uint32_t)
1408	iemNativeEmitBltLoadTlbForNewPage(PIEMRECOMPILERSTATE pReNative, uint32_t off, PCIEMTB pTb, uint8_t idxRange, uint8_t offInstr)
1409	{
1410	#ifdef VBOX_STRICT
1411	off = iemNativeEmitMarker(pReNative, off, 0x80000005);
1412	#endif
1413
1414	/*
1415	* Define labels and allocate the register for holding the GCPhys of the new page.
1416	*/
1417	uint16_t const uTlbSeqNo = pReNative->uTlbSeqNo++;
1418	uint32_t const idxRegGCPhys = iemNativeRegAllocTmp(pReNative, &off);
1419	IEMNATIVEEMITTLBSTATE const TlbState(pReNative, IEM_F_MODE_X86_IS_FLAT(pReNative->fExec), &off);
1420	uint32_t const idxLabelTlbLookup = !TlbState.fSkip
1421	? iemNativeLabelCreate(pReNative, kIemNativeLabelType_TlbLookup, UINT32_MAX, uTlbSeqNo)
1422	: UINT32_MAX;
1423
1424	//off = iemNativeEmitBrk(pReNative, off, 0x1111);
1425
1426	/*
1427	* Jump to the TLB lookup code.
1428	*/
1429	if (!TlbState.fSkip)
1430	off = iemNativeEmitJmpToLabel(pReNative, off, idxLabelTlbLookup); /** @todo short jump */
1431
1432	/*
1433	* TlbMiss:
1434	*
1435	* Call iemNativeHlpMemCodeNewPageTlbMissWithOff to do the work.
1436	*/
1437	uint32_t const idxLabelTlbMiss = iemNativeLabelCreate(pReNative, kIemNativeLabelType_TlbMiss, off, uTlbSeqNo);
1438
1439	/* Save variables in volatile registers. */
1440	uint32_t const fHstRegsNotToSave = TlbState.getRegsNotToSave() \| RT_BIT_32(idxRegGCPhys);
1441	off = iemNativeVarSaveVolatileRegsPreHlpCall(pReNative, off, fHstRegsNotToSave);
1442
1443	#ifdef IEMNATIVE_WITH_EFLAGS_POSTPONING
1444	/* Do delayed EFLAGS calculations. There are no restrictions on volatile registers here. */
1445	off = iemNativeDoPostponedEFlagsAtTlbMiss<0>(pReNative, off, &TlbState, fHstRegsNotToSave);
1446	#endif
1447
1448	/* IEMNATIVE_CALL_ARG1_GREG = offInstr */
1449	off = iemNativeEmitLoadGpr8Imm(pReNative, off, IEMNATIVE_CALL_ARG1_GREG, offInstr);
1450
1451	/* IEMNATIVE_CALL_ARG0_GREG = pVCpu */
1452	off = iemNativeEmitLoadGprFromGpr(pReNative, off, IEMNATIVE_CALL_ARG0_GREG, IEMNATIVE_REG_FIXED_PVMCPU);
1453
1454	/* Done setting up parameters, make the call. */
1455	off = iemNativeEmitCallImm<true /a_fSkipEflChecks/>(pReNative, off, (uintptr_t)iemNativeHlpMemCodeNewPageTlbMissWithOff);
1456
1457	/* Move the result to the right register. */
1458	if (idxRegGCPhys != IEMNATIVE_CALL_RET_GREG)
1459	off = iemNativeEmitLoadGprFromGpr(pReNative, off, idxRegGCPhys, IEMNATIVE_CALL_RET_GREG);
1460
1461	/* Restore variables and guest shadow registers to volatile registers. */
1462	off = iemNativeVarRestoreVolatileRegsPostHlpCall(pReNative, off, fHstRegsNotToSave);
1463	off = iemNativeRegRestoreGuestShadowsInVolatileRegs(pReNative, off, TlbState.getActiveRegsWithShadows(true /fCode/));
1464
1465	#ifdef IEMNATIVE_WITH_TLB_LOOKUP
1466	if (!TlbState.fSkip)
1467	{
1468	/* end of TlbMiss - Jump to the done label. */
1469	uint32_t const idxLabelTlbDone = iemNativeLabelCreate(pReNative, kIemNativeLabelType_TlbDone, UINT32_MAX, uTlbSeqNo);
1470	off = iemNativeEmitJmpToLabel(pReNative, off, idxLabelTlbDone);
1471
1472	/*
1473	* TlbLookup:
1474	*/
1475	off = iemNativeEmitTlbLookup<false, 1 /cbMem/, 0 /fAlignMask/,
1476	IEM_ACCESS_TYPE_EXEC>(pReNative, off, &TlbState,
1477	IEM_F_MODE_X86_IS_FLAT(pReNative->fExec) ? UINT8_MAX : X86_SREG_CS,
1478	idxLabelTlbLookup, idxLabelTlbMiss, idxRegGCPhys, offInstr);
1479
1480	# ifdef IEM_WITH_TLB_STATISTICS
1481	off = iemNativeEmitIncStamCounterInVCpu(pReNative, off, TlbState.idxReg1, TlbState.idxReg2,
1482	RT_UOFFSETOF(VMCPUCC, iem.s.StatNativeCodeTlbHitsForNewPageWithOffset));
1483	# endif
1484
1485	/*
1486	* TlbDone:
1487	*/
1488	iemNativeLabelDefine(pReNative, idxLabelTlbDone, off);
1489	TlbState.freeRegsAndReleaseVars(pReNative, UINT8_MAX /idxVarGCPtrMem/, true /fIsCode/);
1490	}
1491	#else
1492	RT_NOREF(idxLabelTlbMiss);
1493	#endif
1494
1495	/*
1496	* Now check the physical address of the page matches the expected one.
1497	*/
1498	RTGCPHYS const GCPhysNewPage = iemTbGetRangePhysPageAddr(pTb, idxRange);
1499	off = iemNativeEmitTbExitIfGprNotEqualImm<kIemNativeLabelType_ObsoleteTb>(pReNative, off, idxRegGCPhys, GCPhysNewPage);
1500
1501	iemNativeRegFreeTmp(pReNative, idxRegGCPhys);
1502	return off;
1503	}
1504
1505
1506	/**
1507	* Macro that implements TLB loading and updating pbInstrBuf updating when
1508	* branching or when crossing a page on an instruction boundrary.
1509	*
1510	* This differs from BODY_LOAD_TLB_FOR_NEW_PAGE in that it will first check if
1511	* it is an inter-page branch and also check the page offset.
1512	*
1513	* This may long jump if we're raising a \#PF, \#GP or similar trouble.
1514	*/
1515	#define BODY_LOAD_TLB_AFTER_BRANCH(a_pTb, a_idxRange, a_cbInstr) \
1516	RT_NOREF(a_cbInstr); \
1517	off = iemNativeEmitBltLoadTlbAfterBranch(pReNative, off, pTb, a_idxRange)
1518
1519	#define LIVENESS_LOAD_TLB_AFTER_BRANCH(a_pOutgoing, a_pCallEntry) \
1520	if (!IEM_F_MODE_X86_IS_FLAT((uint32_t)(a_pCallEntry)->auParams[0] >> 8)) \
1521	IEM_LIVENESS_RAW_SEG_BASE_INPUT(a_pOutgoing, X86_SREG_CS); \
1522	else do { } while (0)
1523
1524	DECL_FORCE_INLINE(uint32_t)
1525	iemNativeEmitBltLoadTlbAfterBranch(PIEMRECOMPILERSTATE pReNative, uint32_t off, PCIEMTB pTb, uint8_t idxRange)
1526	{
1527	#ifdef VBOX_STRICT
1528	off = iemNativeEmitMarker(pReNative, off, 0x80000006);
1529	#endif
1530
1531	BODY_FLUSH_PENDING_WRITES();
1532
1533	/*
1534	* Define labels and allocate the register for holding the GCPhys of the new page.
1535	*/
1536	uint16_t const uTlbSeqNo = pReNative->uTlbSeqNo++;
1537	RTGCPHYS const GCPhysRangePageWithOffset = iemTbGetRangePhysPageAddr(pTb, idxRange)
1538	\| pTb->aRanges[idxRange].offPhysPage;
1539
1540	/*
1541	*
1542	* First check if RIP is within the current code.
1543	*
1544	* This is very similar to iemNativeEmitBltInCheckPcAfterBranch, the only
1545	* difference is what we do when stuff doesn't match up.
1546	*
1547	* What we to do is.
1548	* 1. Calculate the FLAT PC (RIP + CS.BASE).
1549	* 2. Subtract iem.s.uInstrBufPc from it and getting 'off'.
1550	* 3. The 'off' must be less than X86_PAGE_SIZE/cbInstrBufTotal or
1551	* we need to retranslate RIP via the TLB.
1552	* 4. Add 'off' to iem.s.GCPhysInstrBuf and compare with the
1553	* GCPhysRangePageWithOffset constant mentioned above.
1554	*
1555	* The adding of CS.BASE to RIP can be skipped in the first step if we're
1556	* in 64-bit code or flat 32-bit.
1557	*
1558	*/
1559
1560	/* Allocate registers for step 1. Get the shadowed stuff before allocating
1561	the temp register, so we don't accidentally clobber something we'll be
1562	needing again immediately. This is why we get idxRegCsBase here.
1563	Update: We share registers with the TlbState, as the TLB code path has
1564	little in common with the rest of the code. */
1565	bool const fIsFlat = IEM_F_MODE_X86_IS_FLAT(pReNative->fExec);
1566	IEMNATIVEEMITTLBSTATE const TlbState(pReNative, fIsFlat, &off);
1567	uint8_t const idxRegPc = !TlbState.fSkip ? TlbState.idxRegPtr
1568	: iemNativeRegAllocTmpForGuestReg(pReNative, &off, kIemNativeGstReg_Pc,
1569	kIemNativeGstRegUse_ReadOnly, true /fNoVolatileRegs/);
1570	uint8_t const idxRegCsBase = !TlbState.fSkip \|\| fIsFlat ? TlbState.idxRegSegBase
1571	: iemNativeRegAllocTmpForGuestReg(pReNative, &off, IEMNATIVEGSTREG_SEG_BASE(X86_SREG_CS),
1572	kIemNativeGstRegUse_ReadOnly, true /fNoVolatileRegs/);
1573
1574	uint8_t const idxRegTmp = !TlbState.fSkip ? TlbState.idxReg1 : iemNativeRegAllocTmp(pReNative, &off);
1575	uint8_t const idxRegTmp2 = !TlbState.fSkip ? TlbState.idxReg2 : iemNativeRegAllocTmp(pReNative, &off);
1576	uint8_t const idxRegDummy = !TlbState.fSkip ? iemNativeRegAllocTmp(pReNative, &off) : UINT8_MAX;
1577
1578	#ifdef VBOX_STRICT
1579	/* Do assertions before idxRegTmp contains anything. */
1580	Assert(RT_SIZEOFMEMB(VMCPUCC, iem.s.cbInstrBufTotal) == sizeof(uint16_t));
1581	# ifdef RT_ARCH_AMD64
1582	{
1583	uint8_t * const pbCodeBuf = iemNativeInstrBufEnsure(pReNative, off, 8+2+1 + 11+2+1);
1584	/* Assert(pVCpu->cpum.GstCtx.cs.u64Base == 0 \|\| !IEM_F_MODE_X86_IS_FLAT(pReNative->fExec)); */
1585	if (IEM_F_MODE_X86_IS_FLAT(pReNative->fExec))
1586	{
1587	/* cmp r/m64, imm8 */
1588	pbCodeBuf[off++] = X86_OP_REX_W;
1589	pbCodeBuf[off++] = 0x83;
1590	off = iemNativeEmitGprByVCpuDisp(pbCodeBuf, off, 7, RT_UOFFSETOF(VMCPUCC, cpum.GstCtx.cs.u64Base));
1591	pbCodeBuf[off++] = 0;
1592	/* je rel8 */
1593	pbCodeBuf[off++] = 0x74;
1594	pbCodeBuf[off++] = 1;
1595	/* int3 */
1596	pbCodeBuf[off++] = 0xcc;
1597
1598	}
1599
1600	/* Assert(!(pVCpu->iem.s.GCPhysInstrBuf & X86_PAGE_OFFSET_MASK)); - done later by the non-x86 code */
1601	/* test r/m64, imm32 */
1602	pbCodeBuf[off++] = X86_OP_REX_W;
1603	pbCodeBuf[off++] = 0xf7;
1604	off = iemNativeEmitGprByVCpuDisp(pbCodeBuf, off, 0, RT_UOFFSETOF(VMCPUCC, iem.s.GCPhysInstrBuf));
1605	pbCodeBuf[off++] = RT_BYTE1(X86_PAGE_OFFSET_MASK);
1606	pbCodeBuf[off++] = RT_BYTE2(X86_PAGE_OFFSET_MASK);
1607	pbCodeBuf[off++] = RT_BYTE3(X86_PAGE_OFFSET_MASK);
1608	pbCodeBuf[off++] = RT_BYTE4(X86_PAGE_OFFSET_MASK);
1609	/* jz rel8 */
1610	pbCodeBuf[off++] = 0x74;
1611	pbCodeBuf[off++] = 1;
1612	/* int3 */
1613	pbCodeBuf[off++] = 0xcc;
1614	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1615	}
1616	# else
1617
1618	/* Assert(pVCpu->cpum.GstCtx.cs.u64Base == 0 \|\| !IEM_F_MODE_X86_IS_FLAT(pReNative->fExec)); */
1619	if (IEM_F_MODE_X86_IS_FLAT(pReNative->fExec))
1620	{
1621	off = iemNativeEmitLoadGprWithGstRegT<kIemNativeGstReg_CsBase>(pReNative, off, idxRegTmp);
1622	# ifdef RT_ARCH_ARM64
1623	uint32_t * const pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 2);
1624	pu32CodeBuf[off++] = Armv8A64MkInstrCbzCbnz(false /fJmpIfNotZero/, 2, idxRegTmp);
1625	pu32CodeBuf[off++] = Armv8A64MkInstrBrk(0x2006);
1626	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1627	# else
1628	# error "Port me!"
1629	# endif
1630	}
1631	# endif
1632
1633	#endif /* VBOX_STRICT */
1634
1635	/* Because we're lazy, we'll jump back here to recalc 'off' and share the
1636	GCPhysRangePageWithOffset check. This is a little risky, so we use the
1637	2nd register to check if we've looped more than once already.*/
1638	off = iemNativeEmitGprZero(pReNative, off, idxRegTmp2);
1639
1640	uint32_t const offLabelRedoChecks = off;
1641
1642	/* 1+2. Calculate 'off' first (into idxRegTmp). */
1643	off = iemNativeEmitLoadGprFromVCpuU64(pReNative, off, idxRegTmp, RT_UOFFSETOF(VMCPUCC, iem.s.uInstrBufPc));
1644	if (IEM_F_MODE_X86_IS_FLAT(pReNative->fExec))
1645	{
1646	#ifdef RT_ARCH_ARM64
1647	uint32_t *pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 1);
1648	pu32CodeBuf[off++] = Armv8A64MkInstrSubReg(idxRegTmp, idxRegPc, idxRegTmp);
1649	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1650	#else
1651	off = iemNativeEmitNegGpr(pReNative, off, idxRegTmp);
1652	off = iemNativeEmitAddTwoGprs(pReNative, off, idxRegTmp, idxRegPc);
1653	#endif
1654	}
1655	else
1656	{
1657	#ifdef RT_ARCH_ARM64
1658	uint32_t *pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 2);
1659	pu32CodeBuf[off++] = Armv8A64MkInstrSubReg(idxRegTmp, idxRegCsBase, idxRegTmp);
1660	pu32CodeBuf[off++] = Armv8A64MkInstrAddReg(idxRegTmp, idxRegTmp, idxRegPc);
1661	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1662	#else
1663	off = iemNativeEmitNegGpr(pReNative, off, idxRegTmp);
1664	off = iemNativeEmitAddTwoGprs(pReNative, off, idxRegTmp, idxRegCsBase);
1665	off = iemNativeEmitAddTwoGprs(pReNative, off, idxRegTmp, idxRegPc);
1666	#endif
1667	}
1668
1669	/* 3. Check that off is less than X86_PAGE_SIZE/cbInstrBufTotal.
1670	Unlike iemNativeEmitBltInCheckPcAfterBranch we'll jump to the TLB loading if this fails. */
1671	off = iemNativeEmitCmpGprWithImm(pReNative, off, idxRegTmp, X86_PAGE_SIZE - 1);
1672	uint32_t const offFixedJumpToTlbLoad = off;
1673	off = iemNativeEmitJaToFixed(pReNative, off, off /* (ASSUME ja rel8 suffices) */);
1674
1675	/* 4a. Add iem.s.GCPhysInstrBuf to off ... */
1676	#ifdef RT_ARCH_AMD64
1677	uint8_t * const pbCodeBuf = iemNativeInstrBufEnsure(pReNative, off, 7);
1678	pbCodeBuf[off++] = idxRegTmp < 8 ? X86_OP_REX_W : X86_OP_REX_W \| X86_OP_REX_R;
1679	pbCodeBuf[off++] = 0x03; /* add r64, r/m64 */
1680	off = iemNativeEmitGprByVCpuDisp(pbCodeBuf, off, idxRegTmp, RT_UOFFSETOF(VMCPUCC, iem.s.GCPhysInstrBuf));
1681	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1682
1683	#elif defined(RT_ARCH_ARM64)
1684
1685	off = iemNativeEmitLoadGprFromVCpuU64(pReNative, off, idxRegTmp2, RT_UOFFSETOF(VMCPUCC, iem.s.GCPhysInstrBuf));
1686	uint32_t *pu32CodeBuf = iemNativeInstrBufEnsure(pReNative, off, 1);
1687	pu32CodeBuf[off++] = Armv8A64MkInstrAddReg(idxRegTmp, idxRegTmp, idxRegTmp2);
1688	IEMNATIVE_ASSERT_INSTR_BUF_ENSURE(pReNative, off);
1689
1690	# ifdef VBOX_STRICT /* Assert(!(pVCpu->iem.s.GCPhysInstrBuf & X86_PAGE_OFFSET_MASK)); */
1691	off = iemNativeEmitAndGpr32ByImm(pReNative, off, idxRegTmp2, X86_PAGE_OFFSET_MASK, true /fSetFlags/);
1692	off = iemNativeEmitJzToFixed(pReNative, off, off + 2 /* correct for ARM64 */);
1693	off = iemNativeEmitBrk(pReNative, off, 0x2005);
1694	# endif
1695	#else
1696	# error "Port me"
1697	#endif
1698
1699	/* 4b. ... and compare with GCPhysRangePageWithOffset.
1700
1701	Unlike iemNativeEmitBltInCheckPcAfterBranch we'll have to be more
1702	careful and avoid implicit temporary register usage here.
1703
1704	Unlike the threaded version of this code, we do not obsolete TBs here to
1705	reduce the code size and because indirect calls may legally end at the
1706	same offset in two different pages depending on the program state. */
1707	/** @todo synch the threaded BODY_LOAD_TLB_AFTER_BRANCH version with this. */
1708	off = iemNativeEmitLoadGprImm64(pReNative, off, idxRegTmp2, GCPhysRangePageWithOffset);
1709	off = iemNativeEmitCmpGprWithGpr(pReNative, off, idxRegTmp, idxRegTmp2);
1710	off = iemNativeEmitTbExitJnz<kIemNativeLabelType_CheckBranchMiss>(pReNative, off);
1711	uint32_t const offFixedJumpToEnd = off;
1712	off = iemNativeEmitJmpToFixed(pReNative, off, off + 512 /* force rel32 */);
1713
1714	/*
1715	* TlbLoad:
1716	*
1717	* First we try to go via the TLB.
1718	*/
1719	iemNativeFixupFixedJump(pReNative, offFixedJumpToTlbLoad, off);
1720
1721	/* Check that we haven't been here before. */
1722	off = iemNativeEmitTbExitIfGprIsNotZero<kIemNativeLabelType_CheckBranchMiss>(pReNative, off, idxRegTmp2, false /f64Bit/);
1723
1724	/* Jump to the TLB lookup code. */
1725	uint32_t const idxLabelTlbLookup = !TlbState.fSkip
1726	? iemNativeLabelCreate(pReNative, kIemNativeLabelType_TlbLookup, UINT32_MAX, uTlbSeqNo)
1727	: UINT32_MAX;
1728	//off = iemNativeEmitBrk(pReNative, off, 0x1234);
1729	if (!TlbState.fSkip)
1730	off = iemNativeEmitJmpToLabel(pReNative, off, idxLabelTlbLookup); /** @todo short jump */
1731
1732	/*
1733	* TlbMiss:
1734	*
1735	* Call iemNativeHlpMemCodeNewPageTlbMiss to do the work.
1736	*/
1737	uint32_t const idxLabelTlbMiss = iemNativeLabelCreate(pReNative, kIemNativeLabelType_TlbMiss, off, uTlbSeqNo);
1738	RT_NOREF(idxLabelTlbMiss);
1739
1740	/* Save variables in volatile registers. */
1741	uint32_t const fHstRegsNotToSave = TlbState.getRegsNotToSave() \| RT_BIT_32(idxRegTmp) \| RT_BIT_32(idxRegTmp2)
1742	\| (idxRegDummy != UINT8_MAX ? RT_BIT_32(idxRegDummy) : 0);
1743	off = iemNativeVarSaveVolatileRegsPreHlpCall(pReNative, off, fHstRegsNotToSave);
1744
1745	#ifdef IEMNATIVE_WITH_EFLAGS_POSTPONING
1746	/* Do delayed EFLAGS calculations. There are no restrictions on volatile registers here. */
1747	off = iemNativeDoPostponedEFlagsAtTlbMiss<0>(pReNative, off, &TlbState, fHstRegsNotToSave);
1748	#endif
1749
1750	/* IEMNATIVE_CALL_ARG0_GREG = pVCpu */
1751	off = iemNativeEmitLoadGprFromGpr(pReNative, off, IEMNATIVE_CALL_ARG0_GREG, IEMNATIVE_REG_FIXED_PVMCPU);
1752
1753	/* Done setting up parameters, make the call. */
1754	off = iemNativeEmitCallImm<true /a_fSkipEflChecks/>(pReNative, off, (uintptr_t)iemNativeHlpMemCodeNewPageTlbMiss);
1755
1756	/* Restore variables and guest shadow registers to volatile registers. */
1757	off = iemNativeVarRestoreVolatileRegsPostHlpCall(pReNative, off, fHstRegsNotToSave);
1758	off = iemNativeRegRestoreGuestShadowsInVolatileRegs(pReNative, off,
1759	TlbState.getActiveRegsWithShadows()
1760	\| RT_BIT_32(idxRegPc)
1761	\| (idxRegCsBase != UINT8_MAX ? RT_BIT_32(idxRegCsBase) : 0));
1762
1763	#ifdef IEMNATIVE_WITH_TLB_LOOKUP
1764	if (!TlbState.fSkip)
1765	{
1766	/* end of TlbMiss - Jump to the done label. */
1767	uint32_t const idxLabelTlbDone = iemNativeLabelCreate(pReNative, kIemNativeLabelType_TlbDone, UINT32_MAX, uTlbSeqNo);
1768	off = iemNativeEmitJmpToLabel(pReNative, off, idxLabelTlbDone);
1769
1770	/*
1771	* TlbLookup:
1772	*/
1773	off = iemNativeEmitTlbLookup<false, 1 /cbMem/, 0 /fAlignMask/,
1774	IEM_ACCESS_TYPE_EXEC, true>(pReNative, off, &TlbState, fIsFlat ? UINT8_MAX : X86_SREG_CS,
1775	idxLabelTlbLookup, idxLabelTlbMiss, idxRegDummy);
1776
1777	# ifdef IEM_WITH_TLB_STATISTICS
1778	off = iemNativeEmitIncStamCounterInVCpu(pReNative, off, TlbState.idxReg1, TlbState.idxReg2,
1779	RT_UOFFSETOF(VMCPUCC, iem.s.StatNativeCodeTlbHitsForNewPage));
1780	# endif
1781
1782	/*
1783	* TlbDone:
1784	*/
1785	iemNativeLabelDefine(pReNative, idxLabelTlbDone, off);
1786	TlbState.freeRegsAndReleaseVars(pReNative, UINT8_MAX /idxVarGCPtrMem/, true /fIsCode/);
1787	}
1788	#else
1789	RT_NOREF(idxLabelTlbMiss);
1790	#endif
1791
1792	/* Jmp back to the start and redo the checks. */
1793	off = iemNativeEmitLoadGpr8Imm(pReNative, off, idxRegTmp2, 1); /* indicate that we've looped once already */
1794	off = iemNativeEmitJmpToFixed(pReNative, off, offLabelRedoChecks);
1795
1796	/*
1797	* End:
1798	*
1799	* The end.
1800	*/
1801	iemNativeFixupFixedJump(pReNative, offFixedJumpToEnd, off);
1802
1803	if (!TlbState.fSkip)
1804	iemNativeRegFreeTmp(pReNative, idxRegDummy);
1805	else
1806	{
1807	iemNativeRegFreeTmp(pReNative, idxRegTmp2);
1808	iemNativeRegFreeTmp(pReNative, idxRegTmp);
1809	iemNativeRegFreeTmp(pReNative, idxRegPc);
1810	if (idxRegCsBase != UINT8_MAX)
1811	iemNativeRegFreeTmp(pReNative, idxRegCsBase);
1812	}
1813	return off;
1814	}
1815
1816
1817	#ifdef BODY_CHECK_CS_LIM
1818	/**
1819	* Built-in function that checks the EIP/IP + uParam0 is within CS.LIM,
1820	* raising a \#GP(0) if this isn't the case.
1821	*/
1822	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckCsLim)
1823	{
1824	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
1825	BODY_SET_CUR_INSTR();
1826	BODY_FLUSH_PENDING_WRITES();
1827	BODY_CHECK_CS_LIM(cbInstr);
1828	return off;
1829	}
1830
1831	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckCsLim)
1832	{
1833	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
1834	LIVENESS_CHECK_CS_LIM(pOutgoing);
1835	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
1836	RT_NOREF(pCallEntry);
1837	}
1838	#endif
1839
1840
1841	#if defined(BODY_CHECK_OPCODES) && defined(BODY_CHECK_CS_LIM)
1842	/**
1843	* Built-in function for re-checking opcodes and CS.LIM after an instruction
1844	* that may have modified them.
1845	*/
1846	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckCsLimAndOpcodes)
1847	{
1848	PCIEMTB const pTb = pReNative->pTbOrg;
1849	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
1850	uint32_t const idxRange = (uint32_t)pCallEntry->auParams[1];
1851	uint32_t const offRange = (uint32_t)pCallEntry->auParams[2];
1852	BODY_SET_CUR_INSTR();
1853	BODY_FLUSH_PENDING_WRITES();
1854	BODY_CHECK_CS_LIM(cbInstr);
1855	BODY_CHECK_OPCODES(pTb, idxRange, offRange, cbInstr);
1856	return off;
1857	}
1858
1859	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckCsLimAndOpcodes)
1860	{
1861	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
1862	LIVENESS_CHECK_CS_LIM(pOutgoing);
1863	LIVENESS_CHECK_OPCODES(pOutgoing);
1864	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
1865	RT_NOREF(pCallEntry);
1866	}
1867	#endif
1868
1869
1870	#if defined(BODY_CHECK_OPCODES)
1871	/**
1872	* Built-in function for re-checking opcodes after an instruction that may have
1873	* modified them.
1874	*/
1875	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckOpcodes)
1876	{
1877	PCIEMTB const pTb = pReNative->pTbOrg;
1878	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
1879	uint32_t const idxRange = (uint32_t)pCallEntry->auParams[1];
1880	uint32_t const offRange = (uint32_t)pCallEntry->auParams[2];
1881	BODY_SET_CUR_INSTR();
1882	BODY_FLUSH_PENDING_WRITES();
1883	BODY_CHECK_OPCODES(pTb, idxRange, offRange, cbInstr);
1884	return off;
1885	}
1886
1887	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckOpcodes)
1888	{
1889	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
1890	LIVENESS_CHECK_OPCODES(pOutgoing);
1891	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
1892	RT_NOREF(pCallEntry);
1893	}
1894	#endif
1895
1896
1897	#if defined(BODY_CHECK_OPCODES) && defined(BODY_CONSIDER_CS_LIM_CHECKING)
1898	/**
1899	* Built-in function for re-checking opcodes and considering the need for CS.LIM
1900	* checking after an instruction that may have modified them.
1901	*/
1902	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckOpcodesConsiderCsLim)
1903	{
1904	PCIEMTB const pTb = pReNative->pTbOrg;
1905	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
1906	uint32_t const idxRange = (uint32_t)pCallEntry->auParams[1];
1907	uint32_t const offRange = (uint32_t)pCallEntry->auParams[2];
1908	BODY_SET_CUR_INSTR();
1909	BODY_FLUSH_PENDING_WRITES();
1910	BODY_CONSIDER_CS_LIM_CHECKING(pTb, cbInstr);
1911	BODY_CHECK_OPCODES(pTb, idxRange, offRange, cbInstr);
1912	return off;
1913	}
1914
1915	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckOpcodesConsiderCsLim)
1916	{
1917	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
1918	LIVENESS_CONSIDER_CS_LIM_CHECKING(pOutgoing);
1919	LIVENESS_CHECK_OPCODES(pOutgoing);
1920	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
1921	RT_NOREF(pCallEntry);
1922	}
1923	#endif
1924
1925
1926	/*
1927	* Post-branching checkers.
1928	*/
1929
1930	#if defined(BODY_CHECK_OPCODES) && defined(BODY_CHECK_PC_AFTER_BRANCH) && defined(BODY_CHECK_CS_LIM)
1931	/**
1932	* Built-in function for checking CS.LIM, checking the PC and checking opcodes
1933	* after conditional branching within the same page.
1934	*
1935	* @see iemThreadedFunc_BltIn_CheckPcAndOpcodes
1936	*/
1937	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckCsLimAndPcAndOpcodes)
1938	{
1939	PCIEMTB const pTb = pReNative->pTbOrg;
1940	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
1941	uint32_t const idxRange = (uint32_t)pCallEntry->auParams[1];
1942	uint32_t const offRange = (uint32_t)pCallEntry->auParams[2];
1943	//LogFunc(("idxRange=%u @ %#x LB %#x: offPhysPage=%#x LB %#x\n", idxRange, offRange, cbInstr, pTb->aRanges[idxRange].offPhysPage, pTb->aRanges[idxRange].cbOpcodes));
1944	BODY_SET_CUR_INSTR();
1945	BODY_FLUSH_PENDING_WRITES();
1946	BODY_CHECK_CS_LIM(cbInstr);
1947	BODY_CHECK_PC_AFTER_BRANCH(pTb, idxRange, offRange, cbInstr);
1948	BODY_CHECK_OPCODES(pTb, idxRange, offRange, cbInstr);
1949	//LogFunc(("okay\n"));
1950	return off;
1951	}
1952
1953	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckCsLimAndPcAndOpcodes)
1954	{
1955	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
1956	LIVENESS_CHECK_CS_LIM(pOutgoing);
1957	LIVENESS_CHECK_PC_AFTER_BRANCH(pOutgoing, pCallEntry);
1958	LIVENESS_CHECK_OPCODES(pOutgoing);
1959	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
1960	RT_NOREF(pCallEntry);
1961	}
1962	#endif
1963
1964
1965	#if defined(BODY_CHECK_OPCODES) && defined(BODY_CHECK_PC_AFTER_BRANCH)
1966	/**
1967	* Built-in function for checking the PC and checking opcodes after conditional
1968	* branching within the same page.
1969	*
1970	* @see iemThreadedFunc_BltIn_CheckCsLimAndPcAndOpcodes
1971	*/
1972	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckPcAndOpcodes)
1973	{
1974	PCIEMTB const pTb = pReNative->pTbOrg;
1975	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
1976	uint32_t const idxRange = (uint32_t)pCallEntry->auParams[1];
1977	uint32_t const offRange = (uint32_t)pCallEntry->auParams[2];
1978	//LogFunc(("idxRange=%u @ %#x LB %#x: offPhysPage=%#x LB %#x\n", idxRange, offRange, cbInstr, pTb->aRanges[idxRange].offPhysPage, pTb->aRanges[idxRange].cbOpcodes));
1979	BODY_SET_CUR_INSTR();
1980	BODY_FLUSH_PENDING_WRITES();
1981	BODY_CHECK_PC_AFTER_BRANCH(pTb, idxRange, offRange, cbInstr);
1982	BODY_CHECK_OPCODES(pTb, idxRange, offRange, cbInstr);
1983	//LogFunc(("okay\n"));
1984	return off;
1985	}
1986
1987	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckPcAndOpcodes)
1988	{
1989	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
1990	LIVENESS_CHECK_PC_AFTER_BRANCH(pOutgoing, pCallEntry);
1991	LIVENESS_CHECK_OPCODES(pOutgoing);
1992	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
1993	RT_NOREF(pCallEntry);
1994	}
1995	#endif
1996
1997
1998	#if defined(BODY_CHECK_OPCODES) && defined(BODY_CHECK_PC_AFTER_BRANCH) && defined(BODY_CONSIDER_CS_LIM_CHECKING)
1999	/**
2000	* Built-in function for checking the PC and checking opcodes and considering
2001	* the need for CS.LIM checking after conditional branching within the same
2002	* page.
2003	*
2004	* @see iemThreadedFunc_BltIn_CheckCsLimAndPcAndOpcodes
2005	*/
2006	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckPcAndOpcodesConsiderCsLim)
2007	{
2008	PCIEMTB const pTb = pReNative->pTbOrg;
2009	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2010	uint32_t const idxRange = (uint32_t)pCallEntry->auParams[1];
2011	uint32_t const offRange = (uint32_t)pCallEntry->auParams[2];
2012	//LogFunc(("idxRange=%u @ %#x LB %#x: offPhysPage=%#x LB %#x\n", idxRange, offRange, cbInstr, pTb->aRanges[idxRange].offPhysPage, pTb->aRanges[idxRange].cbOpcodes));
2013	BODY_SET_CUR_INSTR();
2014	BODY_FLUSH_PENDING_WRITES();
2015	BODY_CONSIDER_CS_LIM_CHECKING(pTb, cbInstr);
2016	BODY_CHECK_PC_AFTER_BRANCH(pTb, idxRange, offRange, cbInstr);
2017	BODY_CHECK_OPCODES(pTb, idxRange, offRange, cbInstr);
2018	//LogFunc(("okay\n"));
2019	return off;
2020	}
2021
2022	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckPcAndOpcodesConsiderCsLim)
2023	{
2024	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2025	LIVENESS_CONSIDER_CS_LIM_CHECKING(pOutgoing);
2026	LIVENESS_CHECK_PC_AFTER_BRANCH(pOutgoing, pCallEntry);
2027	LIVENESS_CHECK_OPCODES(pOutgoing);
2028	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2029	RT_NOREF(pCallEntry);
2030	}
2031	#endif
2032
2033
2034	#if defined(BODY_CHECK_OPCODES) && defined(BODY_LOAD_TLB_AFTER_BRANCH) && defined(BODY_CHECK_CS_LIM)
2035	/**
2036	* Built-in function for checking CS.LIM, loading TLB and checking opcodes when
2037	* transitioning to a different code page.
2038	*
2039	* The code page transition can either be natural over onto the next page (with
2040	* the instruction starting at page offset zero) or by means of branching.
2041	*
2042	* @see iemThreadedFunc_BltIn_CheckOpcodesLoadingTlb
2043	*/
2044	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckCsLimAndOpcodesLoadingTlb)
2045	{
2046	PCIEMTB const pTb = pReNative->pTbOrg;
2047	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2048	uint32_t const idxRange = (uint32_t)pCallEntry->auParams[1];
2049	uint32_t const offRange = (uint32_t)pCallEntry->auParams[2];
2050	//LogFunc(("idxRange=%u @ %#x LB %#x: offPhysPage=%#x LB %#x\n", idxRange, offRange, cbInstr, pTb->aRanges[idxRange].offPhysPage, pTb->aRanges[idxRange].cbOpcodes));
2051	BODY_SET_CUR_INSTR();
2052	BODY_FLUSH_PENDING_WRITES();
2053	BODY_CHECK_CS_LIM(cbInstr);
2054	Assert(offRange == 0);
2055	BODY_LOAD_TLB_AFTER_BRANCH(pTb, idxRange, cbInstr);
2056	BODY_CHECK_OPCODES(pTb, idxRange, offRange, cbInstr);
2057	//LogFunc(("okay\n"));
2058	return off;
2059	}
2060
2061	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckCsLimAndOpcodesLoadingTlb)
2062	{
2063	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2064	LIVENESS_CHECK_CS_LIM(pOutgoing);
2065	LIVENESS_LOAD_TLB_AFTER_BRANCH(pOutgoing, pCallEntry);
2066	LIVENESS_CHECK_OPCODES(pOutgoing);
2067	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2068	RT_NOREF(pCallEntry);
2069	}
2070	#endif
2071
2072
2073	#if defined(BODY_CHECK_OPCODES) && defined(BODY_LOAD_TLB_AFTER_BRANCH)
2074	/**
2075	* Built-in function for loading TLB and checking opcodes when transitioning to
2076	* a different code page.
2077	*
2078	* The code page transition can either be natural over onto the next page (with
2079	* the instruction starting at page offset zero) or by means of branching.
2080	*
2081	* @see iemThreadedFunc_BltIn_CheckCsLimAndOpcodesLoadingTlb
2082	*/
2083	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckOpcodesLoadingTlb)
2084	{
2085	PCIEMTB const pTb = pReNative->pTbOrg;
2086	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2087	uint32_t const idxRange = (uint32_t)pCallEntry->auParams[1];
2088	uint32_t const offRange = (uint32_t)pCallEntry->auParams[2];
2089	//LogFunc(("idxRange=%u @ %#x LB %#x: offPhysPage=%#x LB %#x\n", idxRange, offRange, cbInstr, pTb->aRanges[idxRange].offPhysPage, pTb->aRanges[idxRange].cbOpcodes));
2090	BODY_SET_CUR_INSTR();
2091	BODY_FLUSH_PENDING_WRITES();
2092	Assert(offRange == 0);
2093	BODY_LOAD_TLB_AFTER_BRANCH(pTb, idxRange, cbInstr);
2094	BODY_CHECK_OPCODES(pTb, idxRange, offRange, cbInstr);
2095	//LogFunc(("okay\n"));
2096	return off;
2097	}
2098
2099	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckOpcodesLoadingTlb)
2100	{
2101	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2102	LIVENESS_LOAD_TLB_AFTER_BRANCH(pOutgoing, pCallEntry);
2103	LIVENESS_CHECK_OPCODES(pOutgoing);
2104	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2105	RT_NOREF(pCallEntry);
2106	}
2107	#endif
2108
2109
2110	#if defined(BODY_CHECK_OPCODES) && defined(BODY_LOAD_TLB_AFTER_BRANCH) && defined(BODY_CONSIDER_CS_LIM_CHECKING)
2111	/**
2112	* Built-in function for loading TLB and checking opcodes and considering the
2113	* need for CS.LIM checking when transitioning to a different code page.
2114	*
2115	* The code page transition can either be natural over onto the next page (with
2116	* the instruction starting at page offset zero) or by means of branching.
2117	*
2118	* @see iemThreadedFunc_BltIn_CheckCsLimAndOpcodesLoadingTlb
2119	*/
2120	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckOpcodesLoadingTlbConsiderCsLim)
2121	{
2122	PCIEMTB const pTb = pReNative->pTbOrg;
2123	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2124	uint32_t const idxRange = (uint32_t)pCallEntry->auParams[1];
2125	uint32_t const offRange = (uint32_t)pCallEntry->auParams[2];
2126	//LogFunc(("idxRange=%u @ %#x LB %#x: offPhysPage=%#x LB %#x\n", idxRange, offRange, cbInstr, pTb->aRanges[idxRange].offPhysPage, pTb->aRanges[idxRange].cbOpcodes));
2127	BODY_SET_CUR_INSTR();
2128	BODY_FLUSH_PENDING_WRITES();
2129	BODY_CONSIDER_CS_LIM_CHECKING(pTb, cbInstr);
2130	Assert(offRange == 0);
2131	BODY_LOAD_TLB_AFTER_BRANCH(pTb, idxRange, cbInstr);
2132	BODY_CHECK_OPCODES(pTb, idxRange, offRange, cbInstr);
2133	//LogFunc(("okay\n"));
2134	return off;
2135	}
2136
2137	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckOpcodesLoadingTlbConsiderCsLim)
2138	{
2139	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2140	LIVENESS_CONSIDER_CS_LIM_CHECKING(pOutgoing);
2141	LIVENESS_LOAD_TLB_AFTER_BRANCH(pOutgoing, pCallEntry);
2142	LIVENESS_CHECK_OPCODES(pOutgoing);
2143	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2144	RT_NOREF(pCallEntry);
2145	}
2146	#endif
2147
2148
2149
2150	/*
2151	* Natural page crossing checkers.
2152	*/
2153
2154	#if defined(BODY_CHECK_OPCODES) && defined(BODY_LOAD_TLB_FOR_NEW_PAGE) && defined(BODY_CHECK_CS_LIM)
2155	/**
2156	* Built-in function for checking CS.LIM, loading TLB and checking opcodes on
2157	* both pages when transitioning to a different code page.
2158	*
2159	* This is used when the previous instruction requires revalidation of opcodes
2160	* bytes and the current instruction stries a page boundrary with opcode bytes
2161	* in both the old and new page.
2162	*
2163	* @see iemThreadedFunc_BltIn_CheckOpcodesAcrossPageLoadingTlb
2164	*/
2165	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckCsLimAndOpcodesAcrossPageLoadingTlb)
2166	{
2167	PCIEMTB const pTb = pReNative->pTbOrg;
2168	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2169	uint32_t const cbStartPage = (uint32_t)(pCallEntry->auParams[0] >> 32);
2170	uint32_t const idxRange1 = (uint32_t)pCallEntry->auParams[1];
2171	uint32_t const offRange1 = (uint32_t)pCallEntry->auParams[2];
2172	uint32_t const idxRange2 = idxRange1 + 1;
2173	BODY_SET_CUR_INSTR();
2174	BODY_FLUSH_PENDING_WRITES();
2175	BODY_CHECK_CS_LIM(cbInstr);
2176	BODY_CHECK_OPCODES(pTb, idxRange1, offRange1, cbInstr);
2177	BODY_LOAD_TLB_FOR_NEW_PAGE(pTb, cbStartPage, idxRange2, cbInstr);
2178	BODY_CHECK_OPCODES(pTb, idxRange2, 0, cbInstr);
2179	return off;
2180	}
2181
2182	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckCsLimAndOpcodesAcrossPageLoadingTlb)
2183	{
2184	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2185	LIVENESS_CHECK_CS_LIM(pOutgoing);
2186	LIVENESS_CHECK_OPCODES(pOutgoing);
2187	LIVENESS_LOAD_TLB_FOR_NEW_PAGE(pOutgoing, pCallEntry);
2188	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2189	RT_NOREF(pCallEntry);
2190	}
2191	#endif
2192
2193
2194	#if defined(BODY_CHECK_OPCODES) && defined(BODY_LOAD_TLB_FOR_NEW_PAGE)
2195	/**
2196	* Built-in function for loading TLB and checking opcodes on both pages when
2197	* transitioning to a different code page.
2198	*
2199	* This is used when the previous instruction requires revalidation of opcodes
2200	* bytes and the current instruction stries a page boundrary with opcode bytes
2201	* in both the old and new page.
2202	*
2203	* @see iemThreadedFunc_BltIn_CheckCsLimAndOpcodesAcrossPageLoadingTlb
2204	*/
2205	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckOpcodesAcrossPageLoadingTlb)
2206	{
2207	PCIEMTB const pTb = pReNative->pTbOrg;
2208	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2209	uint32_t const cbStartPage = (uint32_t)(pCallEntry->auParams[0] >> 32);
2210	uint32_t const idxRange1 = (uint32_t)pCallEntry->auParams[1];
2211	uint32_t const offRange1 = (uint32_t)pCallEntry->auParams[2];
2212	uint32_t const idxRange2 = idxRange1 + 1;
2213	BODY_SET_CUR_INSTR();
2214	BODY_FLUSH_PENDING_WRITES();
2215	BODY_CHECK_OPCODES(pTb, idxRange1, offRange1, cbInstr);
2216	BODY_LOAD_TLB_FOR_NEW_PAGE(pTb, cbStartPage, idxRange2, cbInstr);
2217	BODY_CHECK_OPCODES(pTb, idxRange2, 0, cbInstr);
2218	return off;
2219	}
2220
2221	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckOpcodesAcrossPageLoadingTlb)
2222	{
2223	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2224	LIVENESS_CHECK_OPCODES(pOutgoing);
2225	LIVENESS_LOAD_TLB_FOR_NEW_PAGE(pOutgoing, pCallEntry);
2226	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2227	RT_NOREF(pCallEntry);
2228	}
2229	#endif
2230
2231
2232	#if defined(BODY_CHECK_OPCODES) && defined(BODY_LOAD_TLB_FOR_NEW_PAGE) && defined(BODY_CONSIDER_CS_LIM_CHECKING)
2233	/**
2234	* Built-in function for loading TLB and checking opcodes on both pages and
2235	* considering the need for CS.LIM checking when transitioning to a different
2236	* code page.
2237	*
2238	* This is used when the previous instruction requires revalidation of opcodes
2239	* bytes and the current instruction stries a page boundrary with opcode bytes
2240	* in both the old and new page.
2241	*
2242	* @see iemThreadedFunc_BltIn_CheckCsLimAndOpcodesAcrossPageLoadingTlb
2243	*/
2244	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckOpcodesAcrossPageLoadingTlbConsiderCsLim)
2245	{
2246	PCIEMTB const pTb = pReNative->pTbOrg;
2247	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2248	uint32_t const cbStartPage = (uint32_t)(pCallEntry->auParams[0] >> 32);
2249	uint32_t const idxRange1 = (uint32_t)pCallEntry->auParams[1];
2250	uint32_t const offRange1 = (uint32_t)pCallEntry->auParams[2];
2251	uint32_t const idxRange2 = idxRange1 + 1;
2252	BODY_SET_CUR_INSTR();
2253	BODY_FLUSH_PENDING_WRITES();
2254	BODY_CONSIDER_CS_LIM_CHECKING(pTb, cbInstr);
2255	BODY_CHECK_OPCODES(pTb, idxRange1, offRange1, cbInstr);
2256	BODY_LOAD_TLB_FOR_NEW_PAGE(pTb, cbStartPage, idxRange2, cbInstr);
2257	BODY_CHECK_OPCODES(pTb, idxRange2, 0, cbInstr);
2258	return off;
2259	}
2260
2261	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckOpcodesAcrossPageLoadingTlbConsiderCsLim)
2262	{
2263	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2264	LIVENESS_CONSIDER_CS_LIM_CHECKING(pOutgoing);
2265	LIVENESS_CHECK_OPCODES(pOutgoing);
2266	LIVENESS_LOAD_TLB_FOR_NEW_PAGE(pOutgoing, pCallEntry);
2267	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2268	RT_NOREF(pCallEntry);
2269	}
2270	#endif
2271
2272
2273	#if defined(BODY_CHECK_OPCODES) && defined(BODY_LOAD_TLB_FOR_NEW_PAGE) && defined(BODY_CHECK_CS_LIM)
2274	/**
2275	* Built-in function for checking CS.LIM, loading TLB and checking opcodes when
2276	* advancing naturally to a different code page.
2277	*
2278	* Only opcodes on the new page is checked.
2279	*
2280	* @see iemThreadedFunc_BltIn_CheckOpcodesOnNextPageLoadingTlb
2281	*/
2282	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckCsLimAndOpcodesOnNextPageLoadingTlb)
2283	{
2284	PCIEMTB const pTb = pReNative->pTbOrg;
2285	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2286	uint32_t const cbStartPage = (uint32_t)(pCallEntry->auParams[0] >> 32);
2287	uint32_t const idxRange1 = (uint32_t)pCallEntry->auParams[1];
2288	//uint32_t const offRange1 = (uint32_t)uParam2;
2289	uint32_t const idxRange2 = idxRange1 + 1;
2290	BODY_SET_CUR_INSTR();
2291	BODY_FLUSH_PENDING_WRITES();
2292	BODY_CHECK_CS_LIM(cbInstr);
2293	BODY_LOAD_TLB_FOR_NEW_PAGE(pTb, cbStartPage, idxRange2, cbInstr);
2294	BODY_CHECK_OPCODES(pTb, idxRange2, 0, cbInstr);
2295	return off;
2296	}
2297
2298	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckCsLimAndOpcodesOnNextPageLoadingTlb)
2299	{
2300	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2301	LIVENESS_CHECK_CS_LIM(pOutgoing);
2302	LIVENESS_LOAD_TLB_FOR_NEW_PAGE(pOutgoing, pCallEntry);
2303	LIVENESS_CHECK_OPCODES(pOutgoing);
2304	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2305	RT_NOREF(pCallEntry);
2306	}
2307	#endif
2308
2309
2310	#if defined(BODY_CHECK_OPCODES) && defined(BODY_LOAD_TLB_FOR_NEW_PAGE)
2311	/**
2312	* Built-in function for loading TLB and checking opcodes when advancing
2313	* naturally to a different code page.
2314	*
2315	* Only opcodes on the new page is checked.
2316	*
2317	* @see iemThreadedFunc_BltIn_CheckCsLimAndOpcodesOnNextPageLoadingTlb
2318	*/
2319	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckOpcodesOnNextPageLoadingTlb)
2320	{
2321	PCIEMTB const pTb = pReNative->pTbOrg;
2322	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2323	uint32_t const cbStartPage = (uint32_t)(pCallEntry->auParams[0] >> 32);
2324	uint32_t const idxRange1 = (uint32_t)pCallEntry->auParams[1];
2325	//uint32_t const offRange1 = (uint32_t)pCallEntry->auParams[2];
2326	uint32_t const idxRange2 = idxRange1 + 1;
2327	BODY_SET_CUR_INSTR();
2328	BODY_FLUSH_PENDING_WRITES();
2329	BODY_LOAD_TLB_FOR_NEW_PAGE(pTb, cbStartPage, idxRange2, cbInstr);
2330	BODY_CHECK_OPCODES(pTb, idxRange2, 0, cbInstr);
2331	return off;
2332	}
2333
2334	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckOpcodesOnNextPageLoadingTlb)
2335	{
2336	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2337	LIVENESS_LOAD_TLB_FOR_NEW_PAGE(pOutgoing, pCallEntry);
2338	LIVENESS_CHECK_OPCODES(pOutgoing);
2339	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2340	RT_NOREF(pCallEntry);
2341	}
2342	#endif
2343
2344
2345	#if defined(BODY_CHECK_OPCODES) && defined(BODY_LOAD_TLB_FOR_NEW_PAGE) && defined(BODY_CONSIDER_CS_LIM_CHECKING)
2346	/**
2347	* Built-in function for loading TLB and checking opcodes and considering the
2348	* need for CS.LIM checking when advancing naturally to a different code page.
2349	*
2350	* Only opcodes on the new page is checked.
2351	*
2352	* @see iemThreadedFunc_BltIn_CheckCsLimAndOpcodesOnNextPageLoadingTlb
2353	*/
2354	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckOpcodesOnNextPageLoadingTlbConsiderCsLim)
2355	{
2356	PCIEMTB const pTb = pReNative->pTbOrg;
2357	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2358	uint32_t const cbStartPage = (uint32_t)(pCallEntry->auParams[0] >> 32);
2359	uint32_t const idxRange1 = (uint32_t)pCallEntry->auParams[1];
2360	//uint32_t const offRange1 = (uint32_t)pCallEntry->auParams[2];
2361	uint32_t const idxRange2 = idxRange1 + 1;
2362	BODY_SET_CUR_INSTR();
2363	BODY_FLUSH_PENDING_WRITES();
2364	BODY_CONSIDER_CS_LIM_CHECKING(pTb, cbInstr);
2365	BODY_LOAD_TLB_FOR_NEW_PAGE(pTb, cbStartPage, idxRange2, cbInstr);
2366	BODY_CHECK_OPCODES(pTb, idxRange2, 0, cbInstr);
2367	return off;
2368	}
2369
2370	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckOpcodesOnNextPageLoadingTlbConsiderCsLim)
2371	{
2372	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2373	LIVENESS_CONSIDER_CS_LIM_CHECKING(pOutgoing);
2374	LIVENESS_LOAD_TLB_FOR_NEW_PAGE(pOutgoing, pCallEntry);
2375	LIVENESS_CHECK_OPCODES(pOutgoing);
2376	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2377	RT_NOREF(pCallEntry);
2378	}
2379	#endif
2380
2381
2382	#if defined(BODY_CHECK_OPCODES) && defined(BODY_LOAD_TLB_FOR_NEW_PAGE) && defined(BODY_CHECK_CS_LIM)
2383	/**
2384	* Built-in function for checking CS.LIM, loading TLB and checking opcodes when
2385	* advancing naturally to a different code page with first instr at byte 0.
2386	*
2387	* @see iemThreadedFunc_BltIn_CheckOpcodesOnNewPageLoadingTlb
2388	*/
2389	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckCsLimAndOpcodesOnNewPageLoadingTlb)
2390	{
2391	PCIEMTB const pTb = pReNative->pTbOrg;
2392	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2393	uint32_t const idxRange = (uint32_t)pCallEntry->auParams[1];
2394	BODY_SET_CUR_INSTR();
2395	BODY_FLUSH_PENDING_WRITES();
2396	BODY_CHECK_CS_LIM(cbInstr);
2397	BODY_LOAD_TLB_FOR_NEW_PAGE(pTb, 0, idxRange, cbInstr);
2398	//Assert(pVCpu->iem.s.offCurInstrStart == 0);
2399	BODY_CHECK_OPCODES(pTb, idxRange, 0, cbInstr);
2400	return off;
2401	}
2402
2403	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckCsLimAndOpcodesOnNewPageLoadingTlb)
2404	{
2405	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2406	LIVENESS_CHECK_CS_LIM(pOutgoing);
2407	LIVENESS_LOAD_TLB_FOR_NEW_PAGE(pOutgoing, pCallEntry);
2408	LIVENESS_CHECK_OPCODES(pOutgoing);
2409	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2410	RT_NOREF(pCallEntry);
2411	}
2412	#endif
2413
2414
2415	#if defined(BODY_CHECK_OPCODES) && defined(BODY_LOAD_TLB_FOR_NEW_PAGE)
2416	/**
2417	* Built-in function for loading TLB and checking opcodes when advancing
2418	* naturally to a different code page with first instr at byte 0.
2419	*
2420	* @see iemThreadedFunc_BltIn_CheckCsLimAndOpcodesOnNewPageLoadingTlb
2421	*/
2422	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckOpcodesOnNewPageLoadingTlb)
2423	{
2424	PCIEMTB const pTb = pReNative->pTbOrg;
2425	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2426	uint32_t const idxRange = (uint32_t)pCallEntry->auParams[1];
2427	BODY_SET_CUR_INSTR();
2428	BODY_FLUSH_PENDING_WRITES();
2429	BODY_LOAD_TLB_FOR_NEW_PAGE(pTb, 0, idxRange, cbInstr);
2430	//Assert(pVCpu->iem.s.offCurInstrStart == 0);
2431	BODY_CHECK_OPCODES(pTb, idxRange, 0, cbInstr);
2432	return off;
2433	}
2434
2435	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckOpcodesOnNewPageLoadingTlb)
2436	{
2437	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2438	LIVENESS_LOAD_TLB_FOR_NEW_PAGE(pOutgoing, pCallEntry);
2439	LIVENESS_CHECK_OPCODES(pOutgoing);
2440	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2441	RT_NOREF(pCallEntry);
2442	}
2443	#endif
2444
2445
2446	#if defined(BODY_CHECK_OPCODES) && defined(BODY_LOAD_TLB_FOR_NEW_PAGE) && defined(BODY_CONSIDER_CS_LIM_CHECKING)
2447	/**
2448	* Built-in function for loading TLB and checking opcodes and considering the
2449	* need for CS.LIM checking when advancing naturally to a different code page
2450	* with first instr at byte 0.
2451	*
2452	* @see iemThreadedFunc_BltIn_CheckCsLimAndOpcodesOnNewPageLoadingTlb
2453	*/
2454	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_CheckOpcodesOnNewPageLoadingTlbConsiderCsLim)
2455	{
2456	PCIEMTB const pTb = pReNative->pTbOrg;
2457	uint32_t const cbInstr = (uint8_t)pCallEntry->auParams[0];
2458	uint32_t const idxRange = (uint32_t)pCallEntry->auParams[1];
2459	BODY_SET_CUR_INSTR();
2460	BODY_FLUSH_PENDING_WRITES();
2461	BODY_CONSIDER_CS_LIM_CHECKING(pTb, cbInstr);
2462	BODY_LOAD_TLB_FOR_NEW_PAGE(pTb, 0, idxRange, cbInstr);
2463	//Assert(pVCpu->iem.s.offCurInstrStart == 0);
2464	BODY_CHECK_OPCODES(pTb, idxRange, 0, cbInstr);
2465	return off;
2466	}
2467
2468	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_CheckOpcodesOnNewPageLoadingTlbConsiderCsLim)
2469	{
2470	IEM_LIVENESS_RAW_INIT_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2471	LIVENESS_CONSIDER_CS_LIM_CHECKING(pOutgoing);
2472	LIVENESS_LOAD_TLB_FOR_NEW_PAGE(pOutgoing, pCallEntry);
2473	LIVENESS_CHECK_OPCODES(pOutgoing);
2474	IEM_LIVENESS_RAW_FINISH_WITH_POTENTIAL_CALL(pOutgoing, pIncoming);
2475	RT_NOREF(pCallEntry);
2476	}
2477	#endif
2478
2479
2480	/**
2481	* Built-in function for jumping in the call sequence.
2482	*/
2483	IEM_DECL_IEMNATIVERECOMPFUNC_DEF(iemNativeRecompFunc_BltIn_Jump)
2484	{
2485	PCIEMTB const pTb = pReNative->pTbOrg;
2486	Assert(pCallEntry->auParams[1] == 0 && pCallEntry->auParams[2] == 0);
2487	Assert(pCallEntry->auParams[0] < pTb->Thrd.cCalls);
2488	#if 1
2489	RT_NOREF(pCallEntry, pTb);
2490
2491	# ifdef VBOX_WITH_STATISTICS
2492	/* Increment StatNativeTbExitLoopFullTb. */
2493	uint32_t const offStat = RT_UOFFSETOF(VMCPU, iem.s.StatNativeTbExitLoopFullTb);
2494	# ifdef RT_ARCH_AMD64
2495	off = iemNativeEmitIncStamCounterInVCpu(pReNative, off, UINT8_MAX, UINT8_MAX, offStat);
2496	# else
2497	uint8_t const idxStatsTmp1 = iemNativeRegAllocTmp(pReNative, &off);
2498	uint8_t const idxStatsTmp2 = iemNativeRegAllocTmp(pReNative, &off);
2499	off = iemNativeEmitIncStamCounterInVCpu(pReNative, off, idxStatsTmp1, idxStatsTmp2, offStat);
2500	iemNativeRegFreeTmp(pReNative, idxStatsTmp1);
2501	iemNativeRegFreeTmp(pReNative, idxStatsTmp2);
2502	# endif
2503	# endif
2504	# ifdef IEMNATIVE_WITH_INSTRUCTION_COUNTING
2505	/** @todo
2506	off = iemNativeEmitAddU32CounterInVCpuEx(pReNative, off, pTb->cInstructions, RT_UOFFSETOF(VMCPUCC, iem.s.cInstructions));
2507	*/
2508	# endif
2509
2510	/* Jump to the start of the TB. */
2511	uint32_t idxLabel = iemNativeLabelFind(pReNative, kIemNativeLabelType_LoopJumpTarget);
2512	AssertStmt(idxLabel < pReNative->cLabels, IEMNATIVE_DO_LONGJMP(pReNative, VERR_IEM_LABEL_IPE_6)); /** @todo better status */
2513	return iemNativeEmitJmpToLabel(pReNative, off, idxLabel);
2514	#else
2515	RT_NOREF(pReNative, pCallEntry, pTb);
2516	return off;
2517	#endif
2518	}
2519
2520	IEM_DECL_IEMNATIVELIVENESSFUNC_DEF(iemNativeLivenessFunc_BltIn_Jump)
2521	{
2522	/* We could also use UNUSED here, but this'll is equivialent (at the moment). */
2523	IEM_LIVENESS_RAW_INIT_WITH_CALL(pOutgoing, pIncoming);
2524	RT_NOREF(pCallEntry);
2525	}
2526

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source: vbox/trunk/src/VBox/VMM/VMMAll/IEMAllN8veRecompBltIn.cpp@ 107044

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