1 | /* $Id: tstMicroGC.cpp 23 2007-01-15 14:08:28Z vboxsync $ */
|
---|
2 | /** @file
|
---|
3 | * Micro Testcase, profiling special CPU operations - GC Code (hacks).
|
---|
4 | */
|
---|
5 |
|
---|
6 | /*
|
---|
7 | * Copyright (C) 2006 InnoTek Systemberatung GmbH
|
---|
8 | *
|
---|
9 | * This file is part of VirtualBox Open Source Edition (OSE), as
|
---|
10 | * available from http://www.virtualbox.org. This file is free software;
|
---|
11 | * you can redistribute it and/or modify it under the terms of the GNU
|
---|
12 | * General Public License as published by the Free Software Foundation,
|
---|
13 | * in version 2 as it comes in the "COPYING" file of the VirtualBox OSE
|
---|
14 | * distribution. VirtualBox OSE is distributed in the hope that it will
|
---|
15 | * be useful, but WITHOUT ANY WARRANTY of any kind.
|
---|
16 | *
|
---|
17 | * If you received this file as part of a commercial VirtualBox
|
---|
18 | * distribution, then only the terms of your commercial VirtualBox
|
---|
19 | * license agreement apply instead of the previous paragraph.
|
---|
20 | */
|
---|
21 |
|
---|
22 | /*******************************************************************************
|
---|
23 | * Header Files *
|
---|
24 | *******************************************************************************/
|
---|
25 | #include <VBox/vm.h>
|
---|
26 | #include <VBox/vmm.h>
|
---|
27 | #include <VBox/selm.h>
|
---|
28 | #include "tstMicro.h"
|
---|
29 |
|
---|
30 | #include <VBox/err.h>
|
---|
31 | #include <iprt/asm.h>
|
---|
32 | #include <VBox/log.h>
|
---|
33 | #include <iprt/assert.h>
|
---|
34 | #include <iprt/string.h>
|
---|
35 |
|
---|
36 |
|
---|
37 | /*******************************************************************************
|
---|
38 | * Internal Functions *
|
---|
39 | *******************************************************************************/
|
---|
40 | __BEGIN_DECLS
|
---|
41 | DECLEXPORT(int) tstMicroGC(PTSTMICRO pTst, unsigned uTestcase);
|
---|
42 | __END_DECLS
|
---|
43 |
|
---|
44 |
|
---|
45 | /**
|
---|
46 | * Save and load our IDT.
|
---|
47 | *
|
---|
48 | * @param pTst Pointer to the instance data.
|
---|
49 | * @param iIDT The index of the IDT entry which should be hooked.
|
---|
50 | */
|
---|
51 | void idtInstall(PTSTMICRO pTst, int iIDT)
|
---|
52 | {
|
---|
53 | RTIDTR Idtr;
|
---|
54 | ASMGetIDTR(&Idtr);
|
---|
55 | if (Idtr.pIdt == (uintptr_t)&pTst->aIDT[0])
|
---|
56 | return;
|
---|
57 | pTst->OriginalIDTR.cbIdt = Idtr.cbIdt;
|
---|
58 | pTst->OriginalIDTR.pIdt = Idtr.pIdt;
|
---|
59 |
|
---|
60 | /*
|
---|
61 | * Copy the IDT.
|
---|
62 | */
|
---|
63 | if (Idtr.cbIdt >= sizeof(pTst->aIDT))
|
---|
64 | Idtr.cbIdt = sizeof(pTst->aIDT) - 1;
|
---|
65 | memcpy(&pTst->aIDT[0], (void *)Idtr.pIdt, Idtr.cbIdt + 1);
|
---|
66 |
|
---|
67 |
|
---|
68 | /* Hook up IDT entry. */
|
---|
69 | if (iIDT >= 0)
|
---|
70 | {
|
---|
71 | uintptr_t uHandler = (uintptr_t)tstTrapHandlerNoErr;
|
---|
72 | if ( iIDT == 8
|
---|
73 | || iIDT == 0xa
|
---|
74 | || iIDT == 0xb
|
---|
75 | || iIDT == 0xc
|
---|
76 | || iIDT == 0xd
|
---|
77 | || iIDT == 0xe
|
---|
78 | || iIDT == 0x11)
|
---|
79 | uHandler = (uintptr_t)tstTrapHandler;
|
---|
80 | pTst->aIDT[iIDT].Int.u16OffsetHigh = uHandler >> 16;
|
---|
81 | pTst->aIDT[iIDT].Int.u16OffsetLow = uHandler & 0xffff;
|
---|
82 | pTst->aIDT[iIDT].Int.u16SegSel = SELMGetHyperCS(&g_VM);
|
---|
83 | pTst->aIDT[iIDT].Int.u2DPL = 3;
|
---|
84 | pTst->aIDT[iIDT].Int.u1Present = 1;
|
---|
85 | pTst->aIDT[iIDT].Int.u1Fixed0 = 0;
|
---|
86 | pTst->aIDT[iIDT].Int.u1Fixed1 = 0;
|
---|
87 | pTst->aIDT[iIDT].Int.u1Fixed2 = 0;
|
---|
88 | pTst->aIDT[iIDT].Int.u1Fixed3 = 0;
|
---|
89 | pTst->aIDT[iIDT].Int.u1Fixed4 = 1;
|
---|
90 | pTst->aIDT[iIDT].Int.u1Fixed5 = 1;
|
---|
91 | pTst->aIDT[iIDT].Int.u132BitGate = 1;
|
---|
92 | pTst->aIDT[iIDT].Int.u1Fixed6 = 0;
|
---|
93 | pTst->aIDT[iIDT].Int.u5Reserved2 = 0;
|
---|
94 | }
|
---|
95 |
|
---|
96 | /* Install int 42h, R3 gate */
|
---|
97 | pTst->aIDT[0x42].Int.u16OffsetHigh = (uintptr_t)tstInterrupt42 >> 16;
|
---|
98 | pTst->aIDT[0x42].Int.u16OffsetLow = (uintptr_t)tstInterrupt42 & 0xffff;
|
---|
99 | pTst->aIDT[0x42].Int.u16SegSel = SELMGetHyperCS(&g_VM);
|
---|
100 | pTst->aIDT[0x42].Int.u2DPL = 3;
|
---|
101 | pTst->aIDT[0x42].Int.u1Present = 1;
|
---|
102 | pTst->aIDT[0x42].Int.u1Fixed0 = 0;
|
---|
103 | pTst->aIDT[0x42].Int.u1Fixed1 = 0;
|
---|
104 | pTst->aIDT[0x42].Int.u1Fixed2 = 0;
|
---|
105 | pTst->aIDT[0x42].Int.u1Fixed3 = 0;
|
---|
106 | pTst->aIDT[0x42].Int.u1Fixed4 = 1;
|
---|
107 | pTst->aIDT[0x42].Int.u1Fixed5 = 1;
|
---|
108 | pTst->aIDT[0x42].Int.u132BitGate = 1;
|
---|
109 | pTst->aIDT[0x42].Int.u1Fixed6 = 0;
|
---|
110 | pTst->aIDT[0x42].Int.u5Reserved2 = 0;
|
---|
111 |
|
---|
112 | /*
|
---|
113 | * Load our IDT.
|
---|
114 | */
|
---|
115 | Idtr.pIdt = (uintptr_t)&pTst->aIDT[0];
|
---|
116 | ASMSetIDTR(&Idtr);
|
---|
117 |
|
---|
118 | RTIDTR Idtr2;
|
---|
119 | ASMGetIDTR(&Idtr2);
|
---|
120 | Assert(Idtr2.pIdt == (uintptr_t)&pTst->aIDT[0]);
|
---|
121 | }
|
---|
122 |
|
---|
123 |
|
---|
124 | /**
|
---|
125 | * Removes all trap overrides except for gate 42.
|
---|
126 | */
|
---|
127 | DECLASM(void) idtOnly42(PTSTMICRO pTst)
|
---|
128 | {
|
---|
129 | if (pTst->OriginalIDTR.pIdt)
|
---|
130 | memcpy(&pTst->aIDT[0], (void *)pTst->OriginalIDTR.pIdt, sizeof(VBOXIDTE) * 32);
|
---|
131 | }
|
---|
132 |
|
---|
133 |
|
---|
134 |
|
---|
135 | DECLEXPORT(int) tstMicroGC(PTSTMICRO pTst, unsigned uTestcase)
|
---|
136 | {
|
---|
137 | RTLogPrintf("pTst=%p uTestcase=%d\n", pTst, uTestcase);
|
---|
138 |
|
---|
139 | /*
|
---|
140 | * Validate input.
|
---|
141 | */
|
---|
142 | if (uTestcase >= TSTMICROTEST_MAX)
|
---|
143 | return VERR_INVALID_PARAMETER;
|
---|
144 |
|
---|
145 | /*
|
---|
146 | * Clear the results.
|
---|
147 | */
|
---|
148 | pTst->u64TSCR0Start = 0;
|
---|
149 | pTst->u64TSCRxStart = 0;
|
---|
150 | pTst->u64TSCR0Enter = 0;
|
---|
151 | pTst->u64TSCR0Exit = 0;
|
---|
152 | pTst->u64TSCRxEnd = 0;
|
---|
153 | pTst->u64TSCR0End = 0;
|
---|
154 | pTst->cHits = 0;
|
---|
155 | pTst->offEIPAdd = 0;
|
---|
156 | pTst->u32CR2 = 0;
|
---|
157 | pTst->u32EIP = 0;
|
---|
158 | pTst->u32ErrCd = 0;
|
---|
159 | PTSTMICRORESULT pRes = &pTst->aResults[uTestcase];
|
---|
160 | memset(&pTst->aResults[uTestcase], 0, sizeof(pTst->aResults[uTestcase]));
|
---|
161 |
|
---|
162 |
|
---|
163 | /*
|
---|
164 | * Do the testcase.
|
---|
165 | */
|
---|
166 | int rc = VINF_SUCCESS;
|
---|
167 | switch (uTestcase)
|
---|
168 | {
|
---|
169 | case TSTMICROTEST_OVERHEAD:
|
---|
170 | {
|
---|
171 | tstOverhead(pTst);
|
---|
172 | break;
|
---|
173 | }
|
---|
174 |
|
---|
175 | case TSTMICROTEST_INVLPG_0:
|
---|
176 | {
|
---|
177 | tstInvlpg0(pTst);
|
---|
178 | break;
|
---|
179 | }
|
---|
180 |
|
---|
181 | case TSTMICROTEST_INVLPG_EIP:
|
---|
182 | {
|
---|
183 | tstInvlpgEIP(pTst);
|
---|
184 | break;
|
---|
185 | }
|
---|
186 |
|
---|
187 | case TSTMICROTEST_INVLPG_ESP:
|
---|
188 | {
|
---|
189 | tstInvlpgESP(pTst);
|
---|
190 | break;
|
---|
191 | }
|
---|
192 |
|
---|
193 | case TSTMICROTEST_CR3_RELOAD:
|
---|
194 | {
|
---|
195 | tstCR3Reload(pTst);
|
---|
196 | break;
|
---|
197 | }
|
---|
198 |
|
---|
199 | case TSTMICROTEST_WP_DISABLE:
|
---|
200 | {
|
---|
201 | tstWPDisable(pTst);
|
---|
202 | break;
|
---|
203 | }
|
---|
204 |
|
---|
205 | case TSTMICROTEST_WP_ENABLE:
|
---|
206 | {
|
---|
207 | tstWPEnable(pTst);
|
---|
208 | break;
|
---|
209 | }
|
---|
210 |
|
---|
211 | case TSTMICROTEST_PF_R0:
|
---|
212 | {
|
---|
213 | idtInstall(pTst, 0xe);
|
---|
214 | pTst->offEIPAdd = 2;
|
---|
215 | rc = tstPFR0(pTst);
|
---|
216 | break;
|
---|
217 | }
|
---|
218 |
|
---|
219 | case TSTMICROTEST_PF_R1:
|
---|
220 | {
|
---|
221 | idtInstall(pTst, 0xe);
|
---|
222 | pTst->offEIPAdd = 2;
|
---|
223 | rc = tstPFR1(pTst);
|
---|
224 | break;
|
---|
225 | }
|
---|
226 |
|
---|
227 | case TSTMICROTEST_PF_R2:
|
---|
228 | {
|
---|
229 | idtInstall(pTst, 0xe);
|
---|
230 | pTst->offEIPAdd = 2;
|
---|
231 | rc = tstPFR2(pTst);
|
---|
232 | break;
|
---|
233 | }
|
---|
234 |
|
---|
235 | case TSTMICROTEST_PF_R3:
|
---|
236 | {
|
---|
237 | idtInstall(pTst, 0xe);
|
---|
238 | pTst->offEIPAdd = 2;
|
---|
239 | rc = tstPFR3(pTst);
|
---|
240 | break;
|
---|
241 | }
|
---|
242 |
|
---|
243 | }
|
---|
244 |
|
---|
245 | /*
|
---|
246 | * Compute the results.
|
---|
247 | */
|
---|
248 | if (pTst->u64TSCR0End && pTst->u64TSCR0Start)
|
---|
249 | pRes->cTotalTicks = pTst->u64TSCR0End - pTst->u64TSCR0Start - pTst->u64Overhead;
|
---|
250 | if (pTst->u64TSCRxStart && pTst->u64TSCR0Start)
|
---|
251 | pRes->cToRxFirstTicks = pTst->u64TSCRxStart - pTst->u64TSCR0Start - pTst->u64Overhead;
|
---|
252 | if (pTst->u64TSCR0Enter && pTst->u64TSCRxStart)
|
---|
253 | pRes->cTrapTicks = pTst->u64TSCR0Enter - pTst->u64TSCRxStart - pTst->u64Overhead;
|
---|
254 | if (pTst->u64TSCRxEnd && pTst->u64TSCR0Exit)
|
---|
255 | pRes->cToRxTrapTicks = pTst->u64TSCRxEnd - pTst->u64TSCR0Exit - pTst->u64Overhead;
|
---|
256 | if (pTst->u64TSCR0End && pTst->u64TSCRxEnd)
|
---|
257 | pRes->cToR0Ticks = pTst->u64TSCR0End - pTst->u64TSCRxEnd - pTst->u64Overhead;
|
---|
258 |
|
---|
259 | return rc;
|
---|
260 | }
|
---|
261 |
|
---|