VirtualBox

source: vbox/trunk/src/VBox/VMM/VMMRC/VMMRCA.asm@ 45884

Last change on this file since 45884 was 41338, checked in by vboxsync, 13 years ago

Pass ring-0 address to the tracer when possible (makes accessing much easier).
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File size: 7.3 KB
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1; $Id: VMMRCA.asm 41338 2012-05-16 14:39:21Z vboxsync $
2;; @file
3; VMMGC - Raw-mode Context Virtual Machine Monitor assembly routines.
4;
5
6;
7; Copyright (C) 2006-2012 Oracle Corporation
8;
9; This file is part of VirtualBox Open Source Edition (OSE), as
10; available from http://www.virtualbox.org. This file is free software;
11; you can redistribute it and/or modify it under the terms of the GNU
12; General Public License (GPL) as published by the Free Software
13; Foundation, in version 2 as it comes in the "COPYING" file of the
14; VirtualBox OSE distribution. VirtualBox OSE is distributed in the
15; hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
16;
17
18;*******************************************************************************
19;* Header Files *
20;*******************************************************************************
21%include "VBox/asmdefs.mac"
22%include "iprt/x86.mac"
23%include "VBox/sup.mac"
24%include "VBox/vmm/vm.mac"
25%include "VMMInternal.mac"
26
27
28;*******************************************************************************
29;* Defined Constants And Macros *
30;*******************************************************************************
31;; save all registers before loading special values for the faulting.
32%macro SaveAndLoadAll 0
33 pushad
34 push ds
35 push es
36 push fs
37 push gs
38 call NAME(vmmGCTestLoadRegs)
39%endmacro
40
41;; restore all registers after faulting.
42%macro RestoreAll 0
43 pop gs
44 pop fs
45 pop es
46 pop ds
47 popad
48%endmacro
49
50
51;*******************************************************************************
52;* External Symbols *
53;*******************************************************************************
54extern IMPNAME(g_VM)
55extern IMPNAME(g_Logger)
56extern IMPNAME(g_RelLogger)
57extern NAME(RTLogLogger)
58extern NAME(vmmRCProbeFireHelper)
59
60
61BEGINCODE
62
63;/**
64; * Internal GC logger worker: Logger wrapper.
65; */
66;VMMRCDECL(void) vmmGCLoggerWrapper(const char *pszFormat, ...);
67EXPORTEDNAME vmmGCLoggerWrapper
68%ifdef __YASM__
69%ifdef ASM_FORMAT_ELF
70 push dword IMP(g_Logger) ; YASM BUG #67! YASMCHECK!
71%else
72 push IMP(g_Logger)
73%endif
74%else
75 push IMP(g_Logger)
76%endif
77 call NAME(RTLogLogger)
78 add esp, byte 4
79 ret
80ENDPROC vmmGCLoggerWrapper
81
82
83;/**
84; * Internal GC logger worker: Logger (release) wrapper.
85; */
86;VMMRCDECL(void) vmmGCRelLoggerWrapper(const char *pszFormat, ...);
87EXPORTEDNAME vmmGCRelLoggerWrapper
88%ifdef __YASM__
89%ifdef ASM_FORMAT_ELF
90 push dword IMP(g_RelLogger) ; YASM BUG #67! YASMCHECK!
91%else
92 push IMP(g_RelLogger)
93%endif
94%else
95 push IMP(g_RelLogger)
96%endif
97 call NAME(RTLogLogger)
98 add esp, byte 4
99 ret
100ENDPROC vmmGCRelLoggerWrapper
101
102
103;;
104; Enables write protection.
105BEGINPROC vmmGCEnableWP
106 push eax
107 mov eax, cr0
108 or eax, X86_CR0_WRITE_PROTECT
109 mov cr0, eax
110 pop eax
111 ret
112ENDPROC vmmGCEnableWP
113
114
115;;
116; Disables write protection.
117BEGINPROC vmmGCDisableWP
118 push eax
119 mov eax, cr0
120 and eax, ~X86_CR0_WRITE_PROTECT
121 mov cr0, eax
122 pop eax
123 ret
124ENDPROC vmmGCDisableWP
125
126
127;;
128; Load special register set expected upon faults.
129; All registers are changed.
130BEGINPROC vmmGCTestLoadRegs
131 mov eax, ss
132 mov ds, eax
133 mov es, eax
134 mov fs, eax
135 mov gs, eax
136 mov edi, 001234567h
137 mov esi, 042000042h
138 mov ebp, 0ffeeddcch
139 mov ebx, 089abcdefh
140 mov ecx, 0ffffaaaah
141 mov edx, 077778888h
142 mov eax, 0f0f0f0f0h
143 ret
144ENDPROC vmmGCTestLoadRegs
145
146
147;;
148; A Trap 3 testcase.
149GLOBALNAME vmmGCTestTrap3
150 SaveAndLoadAll
151
152 int 3
153EXPORTEDNAME vmmGCTestTrap3_FaultEIP
154
155 RestoreAll
156 mov eax, 0ffffffffh
157 ret
158ENDPROC vmmGCTestTrap3
159
160
161;;
162; A Trap 8 testcase.
163GLOBALNAME vmmGCTestTrap8
164 SaveAndLoadAll
165
166 sub esp, byte 8
167 sidt [esp]
168 mov word [esp], 111 ; make any #PF double fault.
169 lidt [esp]
170 add esp, byte 8
171
172 COM_S_CHAR '!'
173
174 xor eax, eax
175EXPORTEDNAME vmmGCTestTrap8_FaultEIP
176 mov eax, [eax]
177
178
179 COM_S_CHAR '2'
180
181 RestoreAll
182 mov eax, 0ffffffffh
183 ret
184ENDPROC vmmGCTestTrap8
185
186
187;;
188; A simple Trap 0d testcase.
189GLOBALNAME vmmGCTestTrap0d
190 SaveAndLoadAll
191
192 push ds
193EXPORTEDNAME vmmGCTestTrap0d_FaultEIP
194 ltr [esp]
195 pop eax
196
197 RestoreAll
198 mov eax, 0ffffffffh
199 ret
200ENDPROC vmmGCTestTrap0d
201
202
203;;
204; A simple Trap 0e testcase.
205GLOBALNAME vmmGCTestTrap0e
206 SaveAndLoadAll
207
208 xor eax, eax
209EXPORTEDNAME vmmGCTestTrap0e_FaultEIP
210 mov eax, [eax]
211
212 RestoreAll
213 mov eax, 0ffffffffh
214 ret
215
216EXPORTEDNAME vmmGCTestTrap0e_ResumeEIP
217 RestoreAll
218 xor eax, eax
219 ret
220ENDPROC vmmGCTestTrap0e
221
222
223
224;;
225; The raw-mode context equivalent of SUPTracerFireProbe.
226;
227; See also SUPLibTracerA.asm.
228;
229EXPORTEDNAME VMMRCProbeFire
230 push ebp
231 mov ebp, esp
232
233 ;
234 ; Save edx and eflags so we can use them.
235 ;
236 pushf
237 push edx
238
239 ;
240 ; Get the address of the tracer context record after first checking
241 ; that host calls hasn't been disabled.
242 ;
243 mov edx, IMP(g_VM)
244 add edx, [edx + VM.offVMCPU]
245 cmp dword [edx + VMCPU.vmm + VMMCPU.cCallRing3Disabled], 0
246 jnz .return
247 add edx, VMCPU.vmm + VMMCPU.TracerCtx
248
249 ;
250 ; Save the X86 context.
251 ;
252 mov [edx + SUPDRVTRACERUSRCTX32.u.X86.eax], eax
253 mov [edx + SUPDRVTRACERUSRCTX32.u.X86.ecx], ecx
254 pop eax
255 mov [edx + SUPDRVTRACERUSRCTX32.u.X86.edx], eax
256 mov [edx + SUPDRVTRACERUSRCTX32.u.X86.ebx], ebx
257 mov [edx + SUPDRVTRACERUSRCTX32.u.X86.esi], esi
258 mov [edx + SUPDRVTRACERUSRCTX32.u.X86.edi], edi
259 pop eax
260 mov [edx + SUPDRVTRACERUSRCTX32.u.X86.eflags], eax
261 mov eax, [ebp + 4]
262 mov [edx + SUPDRVTRACERUSRCTX32.u.X86.eip], eax
263 mov eax, [ebp]
264 mov [edx + SUPDRVTRACERUSRCTX32.u.X86.ebp], eax
265 lea eax, [ebp + 4*2]
266 mov [edx + SUPDRVTRACERUSRCTX32.u.X86.esp], eax
267
268 mov ecx, [ebp + 4*2]
269 mov [edx + SUPDRVTRACERUSRCTX32.u.X86.uVtgProbeLoc], ecx
270
271 mov eax, [ecx + 4] ; VTGPROBELOC::idProbe.
272 mov [edx + SUPDRVTRACERUSRCTX32.idProbe], eax
273 mov dword [edx + SUPDRVTRACERUSRCTX32.cBits], 32
274
275 ; Copy the arguments off the stack.
276%macro COPY_ONE_ARG 1
277 mov eax, [ebp + 12 + %1 * 4]
278 mov [edx + SUPDRVTRACERUSRCTX32.u.X86.aArgs + %1*4], eax
279%endmacro
280 COPY_ONE_ARG 0
281 COPY_ONE_ARG 1
282 COPY_ONE_ARG 2
283 COPY_ONE_ARG 3
284 COPY_ONE_ARG 4
285 COPY_ONE_ARG 5
286 COPY_ONE_ARG 6
287 COPY_ONE_ARG 7
288 COPY_ONE_ARG 8
289 COPY_ONE_ARG 9
290 COPY_ONE_ARG 10
291 COPY_ONE_ARG 11
292 COPY_ONE_ARG 12
293 COPY_ONE_ARG 13
294 COPY_ONE_ARG 14
295 COPY_ONE_ARG 15
296 COPY_ONE_ARG 16
297 COPY_ONE_ARG 17
298 COPY_ONE_ARG 18
299 COPY_ONE_ARG 19
300
301 ;
302 ; Call the helper (too lazy to do the VMM structure stuff).
303 ;
304 mov ecx, IMP(g_VM)
305 push ecx
306 call NAME(vmmRCProbeFireHelper)
307
308.return:
309 leave
310 ret
311ENDPROC VMMRCProbeFire
312
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