IEMAllThrdTables.h@ 103852

Last change on this file since 103852 was 102879, checked in by vboxsync, 11 months ago
VMM/IEM: Skip PC validation and such if we don't jump on a conditional branch (when compiling). Disabled setting two unused IEMCPU members. bugref:10371
Property svn:eol-style set to `native` Property svn:keywords set to `Author Date Id Revision`
File size: 14.8 KB

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1	/* $Id: IEMAllThrdTables.h 102879 2024-01-15 15:28:34Z vboxsync $ */
2	/** @file
3	* IEM - Instruction Decoding and Threaded Recompilation, Instruction Tables.
4	*/
5
6	/*
7	* Copyright (C) 2011-2023 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	#ifndef VMM_INCLUDED_SRC_VMMAll_IEMAllThrdTables_h
29	#define VMM_INCLUDED_SRC_VMMAll_IEMAllThrdTables_h
30	#ifndef RT_WITHOUT_PRAGMA_ONCE
31	# pragma once
32	#endif
33
34
35	/*********************************************************************************************************************************
36	* Header Files *
37	*********************************************************************************************************************************/
38	#ifndef LOG_GROUP /* defined when included by tstIEMCheckMc.cpp */
39	# define LOG_GROUP LOG_GROUP_IEM_RE_THREADED
40	#endif
41	#define IEM_WITH_CODE_TLB_AND_OPCODE_BUF /* A bit hackish, but its all in IEMInline.h. */
42	#define VMCPU_INCL_CPUM_GST_CTX
43	#include <VBox/vmm/iem.h>
44	#include <VBox/vmm/cpum.h>
45	#include <VBox/vmm/apic.h>
46	#include <VBox/vmm/pdm.h>
47	#include <VBox/vmm/pgm.h>
48	#include <VBox/vmm/iom.h>
49	#include <VBox/vmm/em.h>
50	#include <VBox/vmm/hm.h>
51	#include <VBox/vmm/nem.h>
52	#include <VBox/vmm/gim.h>
53	#ifdef VBOX_WITH_NESTED_HWVIRT_SVM
54	# include <VBox/vmm/em.h>
55	# include <VBox/vmm/hm_svm.h>
56	#endif
57	#ifdef VBOX_WITH_NESTED_HWVIRT_VMX
58	# include <VBox/vmm/hmvmxinline.h>
59	#endif
60	#include <VBox/vmm/tm.h>
61	#include <VBox/vmm/dbgf.h>
62	#include <VBox/vmm/dbgftrace.h>
63	#ifndef TST_IEM_CHECK_MC
64	# include "IEMInternal.h"
65	#endif
66	#include <VBox/vmm/vmcc.h>
67	#include <VBox/log.h>
68	#include <VBox/err.h>
69	#include <VBox/param.h>
70	#include <VBox/dis.h>
71	#include <VBox/disopcode-x86-amd64.h>
72	#include <iprt/asm-math.h>
73	#include <iprt/assert.h>
74	#include <iprt/mem.h>
75	#include <iprt/string.h>
76	#include <iprt/x86.h>
77
78	#ifndef TST_IEM_CHECK_MC
79	# include "IEMInline.h"
80	# include "IEMOpHlp.h"
81	# include "IEMMc.h"
82	#endif
83
84	#include "IEMThreadedFunctions.h"
85	#include "IEMN8veRecompiler.h" /* For a_fGstShwFlush and iemThreadedRecompilerMcDeferToCImpl0. */
86
87
88	/*
89	* Narrow down configs here to avoid wasting time on unused configs here.
90	*/
91
92	#ifndef IEM_WITH_CODE_TLB
93	# error The code TLB must be enabled for the recompiler.
94	#endif
95
96	#ifndef IEM_WITH_DATA_TLB
97	# error The data TLB must be enabled for the recompiler.
98	#endif
99
100	#ifndef IEM_WITH_SETJMP
101	# error The setjmp approach must be enabled for the recompiler.
102	#endif
103
104
105	/*********************************************************************************************************************************
106	* Defined Constants And Macros *
107	*********************************************************************************************************************************/
108	#define g_apfnOneByteMap g_apfnIemThreadedRecompilerOneByteMap
109	#define g_apfnTwoByteMap g_apfnIemThreadedRecompilerTwoByteMap
110	#define g_apfnThreeByte0f3a g_apfnIemThreadedRecompilerThreeByte0f3a
111	#define g_apfnThreeByte0f38 g_apfnIemThreadedRecompilerThreeByte0f38
112	#define g_apfnVexMap1 g_apfnIemThreadedRecompilerVecMap1
113	#define g_apfnVexMap2 g_apfnIemThreadedRecompilerVecMap2
114	#define g_apfnVexMap3 g_apfnIemThreadedRecompilerVecMap3
115
116
117	/*
118	* Override IEM_MC_BEGIN to take down the IEM_CIMPL_F_XXX flags.
119	*/
120	#undef IEM_MC_BEGIN
121	#define IEM_MC_BEGIN(a_cArgs, a_cLocals, a_fMcFlags, a_fCImplFlags) \
122	{ \
123	pVCpu->iem.s.fTbCurInstr = (a_fCImplFlags) /\| ((a_fMcFlags) << 20/
124
125	/*
126	* Override IEM_MC_CALC_RM_EFF_ADDR to use iemOpHlpCalcRmEffAddrJmpEx and produce uEffAddrInfo.
127	*/
128	#undef IEM_MC_CALC_RM_EFF_ADDR
129	#ifndef IEM_WITH_SETJMP
130	# define IEM_MC_CALC_RM_EFF_ADDR(a_GCPtrEff, a_bRm, a_cbImmAndRspOffset) \
131	uint64_t uEffAddrInfo; \
132	IEM_MC_RETURN_ON_FAILURE(iemOpHlpCalcRmEffAddrJmpEx(pVCpu, (a_bRm), (a_cbImmAndRspOffset), &(a_GCPtrEff), &uEffAddrInfo))
133	#else
134	# define IEM_MC_CALC_RM_EFF_ADDR(a_GCPtrEff, a_bRm, a_cbImmAndRspOffset) \
135	uint64_t uEffAddrInfo; \
136	((a_GCPtrEff) = iemOpHlpCalcRmEffAddrJmpEx(pVCpu, (a_bRm), (a_cbImmAndRspOffset), &uEffAddrInfo))
137	#endif
138
139	/*
140	* Likewise override IEM_OPCODE_SKIP_RM_EFF_ADDR_BYTES so we fetch all the opcodes.
141	*/
142	#undef IEM_OPCODE_SKIP_RM_EFF_ADDR_BYTES
143	#define IEM_OPCODE_SKIP_RM_EFF_ADDR_BYTES(a_bRm) do { \
144	uint64_t uEffAddrInfo; \
145	(void)iemOpHlpCalcRmEffAddrJmpEx(pVCpu, bRm, 0, &uEffAddrInfo); \
146	} while (0)
147
148	/*
149	* Override the IEM_MC_REL_JMP_S*_AND_FINISH macros to check for zero byte jumps.
150	*/
151	#undef IEM_MC_REL_JMP_S8_AND_FINISH
152	#define IEM_MC_REL_JMP_S8_AND_FINISH(a_i8) do { \
153	Assert(pVCpu->iem.s.fTbBranched != 0); \
154	if ((a_i8) == 0) \
155	pVCpu->iem.s.fTbBranched \|= IEMBRANCHED_F_ZERO; \
156	return iemRegRipRelativeJumpS8AndFinishClearingRF(pVCpu, IEM_GET_INSTR_LEN(pVCpu), (a_i8), pVCpu->iem.s.enmEffOpSize); \
157	} while (0)
158
159	#undef IEM_MC_REL_JMP_S16_AND_FINISH
160	#define IEM_MC_REL_JMP_S16_AND_FINISH(a_i16) do { \
161	Assert(pVCpu->iem.s.fTbBranched != 0); \
162	if ((a_i16) == 0) \
163	pVCpu->iem.s.fTbBranched \|= IEMBRANCHED_F_ZERO; \
164	return iemRegRipRelativeJumpS16AndFinishClearingRF(pVCpu, IEM_GET_INSTR_LEN(pVCpu), (a_i16)); \
165	} while (0)
166
167	#undef IEM_MC_REL_JMP_S32_AND_FINISH
168	#define IEM_MC_REL_JMP_S32_AND_FINISH(a_i32) do { \
169	Assert(pVCpu->iem.s.fTbBranched != 0); \
170	if ((a_i32) == 0) \
171	pVCpu->iem.s.fTbBranched \|= IEMBRANCHED_F_ZERO; \
172	return iemRegRipRelativeJumpS32AndFinishClearingRF(pVCpu, IEM_GET_INSTR_LEN(pVCpu), (a_i32), pVCpu->iem.s.enmEffOpSize); \
173	} while (0)
174
175
176	/*
177	* Emit call macros.
178	*/
179	#define IEM_MC2_BEGIN_EMIT_CALLS(a_fCheckIrqBefore) \
180	{ \
181	PIEMTB const pTb = pVCpu->iem.s.pCurTbR3; \
182	uint8_t const cbInstrMc2 = IEM_GET_INSTR_LEN(pVCpu); \
183	AssertMsg(pVCpu->iem.s.offOpcode == cbInstrMc2, \
184	("%u vs %u (%04x:%08RX64)\n", pVCpu->iem.s.offOpcode, cbInstrMc2, \
185	pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip)); \
186	\
187	/* If we need to check for IRQs before the instruction, we do that before \
188	adding any opcodes as it may abort the instruction. \
189	Note! During compilation, we may swap IRQ and #PF exceptions here \
190	in a manner that a real CPU would not do. However it shouldn't \
191	be something that is easy (if at all possible) to observe in the \
192	guest, so fine. The unexpected end-of-tb below have the same \
193	potential "issue". */ \
194	if (!(a_fCheckIrqBefore) \|\| iemThreadedCompileEmitIrqCheckBefore(pVCpu, pTb)) \
195	{ /* likely */ } \
196	else \
197	return VINF_IEM_RECOMPILE_END_TB; \
198	\
199	/* No page crossing, right? */ \
200	uint16_t const offOpcodeMc2 = pTb->cbOpcodes; \
201	uint8_t const idxRangeMc2 = pTb->cRanges - 1; \
202	if ( !pVCpu->iem.s.fTbCrossedPage \
203	&& !pVCpu->iem.s.fTbCheckOpcodes \
204	&& !pVCpu->iem.s.fTbBranched \
205	&& !(pTb->fFlags & IEMTB_F_CS_LIM_CHECKS)) \
206	{ \
207	/** @todo Custom copy function, given range is 1 thru 15 bytes. */ \
208	memcpy(&pTb->pabOpcodes[offOpcodeMc2], pVCpu->iem.s.abOpcode, pVCpu->iem.s.offOpcode); \
209	pTb->cbOpcodes = offOpcodeMc2 + pVCpu->iem.s.offOpcode; \
210	pTb->aRanges[idxRangeMc2].cbOpcodes += cbInstrMc2; \
211	Assert(pTb->cbOpcodes <= pVCpu->iem.s.cbOpcodesAllocated); \
212	} \
213	else if (iemThreadedCompileBeginEmitCallsComplications(pVCpu, pTb)) \
214	{ /* likely */ } \
215	else \
216	return VINF_IEM_RECOMPILE_END_TB; \
217	\
218	uint8_t const idxInstrMc2 = pTb->cInstructions; \
219	\
220	/* Emit hardware instruction breakpoint check if enabled. */ \
221	if (!(pTb->fFlags & IEM_F_PENDING_BRK_INSTR)) \
222	{ /* likely */ } \
223	else \
224	IEM_MC2_EMIT_CALL_0(kIemThreadedFunc_BltIn_CheckHwInstrBps)
225
226	#define IEM_MC2_EMIT_CALL_0(a_enmFunction) do { \
227	IEMTHREADEDFUNCS const enmFunctionCheck = a_enmFunction; RT_NOREF(enmFunctionCheck); \
228	\
229	LogFlow(("Call #%u: " #a_enmFunction "\n", pTb->Thrd.cCalls)); \
230	PIEMTHRDEDCALLENTRY const pCall = &pTb->Thrd.paCalls[pTb->Thrd.cCalls++]; \
231	pCall->enmFunction = a_enmFunction; \
232	pCall->idxInstr = idxInstrMc2; \
233	pCall->uUnused0 = 0; \
234	pCall->offOpcode = offOpcodeMc2; \
235	pCall->cbOpcode = cbInstrMc2; \
236	pCall->idxRange = idxRangeMc2; \
237	pCall->auParams[0] = 0; \
238	pCall->auParams[1] = 0; \
239	pCall->auParams[2] = 0; \
240	} while (0)
241	#define IEM_MC2_EMIT_CALL_1(a_enmFunction, a_uArg0) do { \
242	IEMTHREADEDFUNCS const enmFunctionCheck = a_enmFunction; RT_NOREF(enmFunctionCheck); \
243	uint64_t const uArg0Check = (a_uArg0); RT_NOREF(uArg0Check); \
244	\
245	LogFlow(("Call #%u: " #a_enmFunction " a0=%RX64\n", pTb->Thrd.cCalls, (uint64_t)a_uArg0)); \
246	PIEMTHRDEDCALLENTRY const pCall = &pTb->Thrd.paCalls[pTb->Thrd.cCalls++]; \
247	pCall->enmFunction = a_enmFunction; \
248	pCall->idxInstr = idxInstrMc2; \
249	pCall->uUnused0 = 0; \
250	pCall->offOpcode = offOpcodeMc2; \
251	pCall->cbOpcode = cbInstrMc2; \
252	pCall->idxRange = idxRangeMc2; \
253	pCall->auParams[0] = a_uArg0; \
254	pCall->auParams[1] = 0; \
255	pCall->auParams[2] = 0; \
256	} while (0)
257	#define IEM_MC2_EMIT_CALL_2(a_enmFunction, a_uArg0, a_uArg1) do { \
258	IEMTHREADEDFUNCS const enmFunctionCheck = a_enmFunction; RT_NOREF(enmFunctionCheck); \
259	uint64_t const uArg0Check = (a_uArg0); RT_NOREF(uArg0Check); \
260	uint64_t const uArg1Check = (a_uArg1); RT_NOREF(uArg1Check); \
261	\
262	LogFlow(("Call #%u: " #a_enmFunction " a0=%RX64 a1=%RX64\n", pTb->Thrd.cCalls, (uint64_t)a_uArg0, (uint64_t)a_uArg1)); \
263	PIEMTHRDEDCALLENTRY const pCall = &pTb->Thrd.paCalls[pTb->Thrd.cCalls++]; \
264	pCall->enmFunction = a_enmFunction; \
265	pCall->idxInstr = idxInstrMc2; \
266	pCall->uUnused0 = 0; \
267	pCall->offOpcode = offOpcodeMc2; \
268	pCall->cbOpcode = cbInstrMc2; \
269	pCall->idxRange = idxRangeMc2; \
270	pCall->auParams[0] = a_uArg0; \
271	pCall->auParams[1] = a_uArg1; \
272	pCall->auParams[2] = 0; \
273	} while (0)
274	#define IEM_MC2_EMIT_CALL_3(a_enmFunction, a_uArg0, a_uArg1, a_uArg2) do { \
275	IEMTHREADEDFUNCS const enmFunctionCheck = a_enmFunction; RT_NOREF(enmFunctionCheck); \
276	uint64_t const uArg0Check = (a_uArg0); RT_NOREF(uArg0Check); \
277	uint64_t const uArg1Check = (a_uArg1); RT_NOREF(uArg1Check); \
278	uint64_t const uArg2Check = (a_uArg2); RT_NOREF(uArg2Check); \
279	\
280	LogFlow(("Call #%u: " #a_enmFunction " a0=%RX64 a1=%RX64 a2=%RX64\n", pTb->Thrd.cCalls, (uint64_t)a_uArg0, (uint64_t)a_uArg1, (uint64_t)a_uArg2)); \
281	PIEMTHRDEDCALLENTRY const pCall = &pTb->Thrd.paCalls[pTb->Thrd.cCalls++]; \
282	pCall->enmFunction = a_enmFunction; \
283	pCall->idxInstr = idxInstrMc2; \
284	pCall->uUnused0 = 0; \
285	pCall->offOpcode = offOpcodeMc2; \
286	pCall->cbOpcode = cbInstrMc2; \
287	pCall->idxRange = idxRangeMc2; \
288	pCall->auParams[0] = a_uArg0; \
289	pCall->auParams[1] = a_uArg1; \
290	pCall->auParams[2] = a_uArg2; \
291	} while (0)
292	#define IEM_MC2_END_EMIT_CALLS(a_fCImplFlags) \
293	Assert(pTb->cInstructions <= pTb->Thrd.cCalls); \
294	if (pTb->cInstructions < 255) \
295	pTb->cInstructions++; \
296	uint32_t const fCImplFlagsMc2 = (a_fCImplFlags); \
297	RT_NOREF(fCImplFlagsMc2); \
298	} while (0)
299
300
301	/*
302	* IEM_MC_DEFER_TO_CIMPL_0 is easily wrapped up.
303	*
304	* Doing so will also take care of IEMOP_RAISE_DIVIDE_ERROR, IEMOP_RAISE_INVALID_LOCK_PREFIX,
305	* IEMOP_RAISE_INVALID_OPCODE and their users.
306	*/
307	#undef IEM_MC_DEFER_TO_CIMPL_0_RET
308	#define IEM_MC_DEFER_TO_CIMPL_0_RET(a_fFlags, a_fGstShwFlush, a_pfnCImpl) \
309	return iemThreadedRecompilerMcDeferToCImpl0(pVCpu, a_fFlags, a_fGstShwFlush, a_pfnCImpl)
310
311	DECLINLINE(VBOXSTRICTRC)
312	iemThreadedRecompilerMcDeferToCImpl0(PVMCPUCC pVCpu, uint32_t fFlags, uint64_t fGstShwFlush, PFNIEMCIMPL0 pfnCImpl)
313	{
314	LogFlow(("CImpl0: %04x:%08RX64 LB %#x: %#x %#RX64 %p\n",
315	pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip, IEM_GET_INSTR_LEN(pVCpu), fFlags, fGstShwFlush, pfnCImpl));
316	pVCpu->iem.s.fTbCurInstr = fFlags;
317
318	IEM_MC2_BEGIN_EMIT_CALLS(fFlags & IEM_CIMPL_F_CHECK_IRQ_BEFORE);
319	IEM_MC2_EMIT_CALL_3(kIemThreadedFunc_BltIn_DeferToCImpl0, (uintptr_t)pfnCImpl, IEM_GET_INSTR_LEN(pVCpu), fGstShwFlush);
320	if ( (fFlags & (IEM_CIMPL_F_MODE \| IEM_CIMPL_F_VMEXIT))
321	&& !(fFlags & (IEM_CIMPL_F_END_TB \| IEM_CIMPL_F_BRANCH_FAR)))
322	IEM_MC2_EMIT_CALL_1(kIemThreadedFunc_BltIn_CheckMode, pVCpu->iem.s.fExec);
323	IEM_MC2_END_EMIT_CALLS(fFlags);
324
325	/*
326	* We have to repeat work normally done by kdCImplFlags and
327	* ThreadedFunctionVariation.emitThreadedCallStmts here.
328	*/
329	AssertCompile(IEM_CIMPL_F_BRANCH_DIRECT == IEMBRANCHED_F_DIRECT);
330	AssertCompile(IEM_CIMPL_F_BRANCH_INDIRECT == IEMBRANCHED_F_INDIRECT);
331	AssertCompile(IEM_CIMPL_F_BRANCH_RELATIVE == IEMBRANCHED_F_RELATIVE);
332	AssertCompile(IEM_CIMPL_F_BRANCH_CONDITIONAL == IEMBRANCHED_F_CONDITIONAL);
333	AssertCompile(IEM_CIMPL_F_BRANCH_FAR == IEMBRANCHED_F_FAR);
334
335	if (fFlags & (IEM_CIMPL_F_END_TB \| IEM_CIMPL_F_BRANCH_FAR))
336	pVCpu->iem.s.fEndTb = true;
337	else if (fFlags & IEM_CIMPL_F_BRANCH_ANY)
338	pVCpu->iem.s.fTbBranched = fFlags & (IEM_CIMPL_F_BRANCH_ANY \| IEM_CIMPL_F_BRANCH_FAR \| IEM_CIMPL_F_BRANCH_CONDITIONAL);
339
340	if (fFlags & IEM_CIMPL_F_CHECK_IRQ_BEFORE)
341	pVCpu->iem.s.cInstrTillIrqCheck = 0;
342
343	return pfnCImpl(pVCpu, IEM_GET_INSTR_LEN(pVCpu));
344	}
345
346
347	/**
348	* Helper for indicating that we've branched.
349	*/
350	DECL_FORCE_INLINE(void) iemThreadedSetBranched(PVMCPUCC pVCpu, uint8_t fTbBranched)
351	{
352	pVCpu->iem.s.fTbBranched = fTbBranched;
353	//pVCpu->iem.s.GCPhysTbBranchSrcBuf = pVCpu->iem.s.GCPhysInstrBuf;
354	//pVCpu->iem.s.GCVirtTbBranchSrcBuf = pVCpu->iem.s.uInstrBufPc;
355	}
356
357
358	#endif /* !VMM_INCLUDED_SRC_VMMAll_IEMAllThrdTables_h */

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source: vbox/trunk/src/VBox/VMM/VMMAll/IEMAllThrdTables.h@ 103852

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