VirtualBox

source: vbox/trunk/src/recompiler/target-i386/cpu.h@ 42407

Last change on this file since 42407 was 42407, checked in by vboxsync, 12 years ago

VMM: Futher work on dealing with hidden segment register, esp. when going stale.

  • Property svn:eol-style set to native
File size: 34.6 KB
Line 
1/*
2 * i386 virtual CPU header
3 *
4 * Copyright (c) 2003 Fabrice Bellard
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with this library; if not, see <http://www.gnu.org/licenses/>.
18 */
19
20/*
21 * Oracle LGPL Disclaimer: For the avoidance of doubt, except that if any license choice
22 * other than GPL or LGPL is available it will apply instead, Oracle elects to use only
23 * the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where
24 * a choice of LGPL license versions is made available with the language indicating
25 * that LGPLv2 or any later version may be used, or where a choice of which version
26 * of the LGPL is applied is otherwise unspecified.
27 */
28
29#ifndef CPU_I386_H
30#define CPU_I386_H
31
32#include "config.h"
33
34#ifdef TARGET_X86_64
35#define TARGET_LONG_BITS 64
36#else
37#define TARGET_LONG_BITS 32
38#endif
39
40/* target supports implicit self modifying code */
41#define TARGET_HAS_SMC
42/* support for self modifying code even if the modified instruction is
43 close to the modifying instruction */
44#define TARGET_HAS_PRECISE_SMC
45
46#define TARGET_HAS_ICE 1
47
48#ifdef TARGET_X86_64
49#define ELF_MACHINE EM_X86_64
50#else
51#define ELF_MACHINE EM_386
52#endif
53
54#define CPUState struct CPUX86State
55
56#include "cpu-defs.h"
57
58#include "softfloat.h"
59
60#ifdef VBOX
61# include <iprt/critsect.h>
62# include <iprt/thread.h>
63# include <iprt/assert.h>
64# include <iprt/asm.h>
65# include <VBox/vmm/vmm.h>
66# include <VBox/vmm/stam.h>
67# include <VBox/vmm/cpumctx.h>
68#endif /* VBOX */
69
70#define R_EAX 0
71#define R_ECX 1
72#define R_EDX 2
73#define R_EBX 3
74#define R_ESP 4
75#define R_EBP 5
76#define R_ESI 6
77#define R_EDI 7
78
79#define R_AL 0
80#define R_CL 1
81#define R_DL 2
82#define R_BL 3
83#define R_AH 4
84#define R_CH 5
85#define R_DH 6
86#define R_BH 7
87
88#define R_ES 0
89#define R_CS 1
90#define R_SS 2
91#define R_DS 3
92#define R_FS 4
93#define R_GS 5
94
95/* segment descriptor fields */
96#define DESC_G_MASK (1 << 23)
97#define DESC_B_SHIFT 22
98#define DESC_B_MASK (1 << DESC_B_SHIFT)
99#define DESC_L_SHIFT 21 /* x86_64 only : 64 bit code segment */
100#define DESC_L_MASK (1 << DESC_L_SHIFT)
101#define DESC_AVL_MASK (1 << 20)
102#define DESC_P_MASK (1 << 15)
103#define DESC_DPL_SHIFT 13
104#define DESC_DPL_MASK (3 << DESC_DPL_SHIFT)
105#define DESC_S_MASK (1 << 12)
106#define DESC_TYPE_SHIFT 8
107#define DESC_TYPE_MASK (15 << DESC_TYPE_SHIFT)
108#define DESC_A_MASK (1 << 8)
109
110#define DESC_CS_MASK (1 << 11) /* 1=code segment 0=data segment */
111#define DESC_C_MASK (1 << 10) /* code: conforming */
112#define DESC_R_MASK (1 << 9) /* code: readable */
113
114#define DESC_E_MASK (1 << 10) /* data: expansion direction */
115#define DESC_W_MASK (1 << 9) /* data: writable */
116
117#define DESC_TSS_BUSY_MASK (1 << 9)
118
119/* eflags masks */
120#define CC_C 0x0001
121#define CC_P 0x0004
122#define CC_A 0x0010
123#define CC_Z 0x0040
124#define CC_S 0x0080
125#define CC_O 0x0800
126
127#define TF_SHIFT 8
128#define IOPL_SHIFT 12
129#define VM_SHIFT 17
130
131#define TF_MASK 0x00000100
132#define IF_MASK 0x00000200
133#define DF_MASK 0x00000400
134#define IOPL_MASK 0x00003000
135#define NT_MASK 0x00004000
136#define RF_MASK 0x00010000
137#define VM_MASK 0x00020000
138#define AC_MASK 0x00040000
139#define VIF_MASK 0x00080000
140#define VIP_MASK 0x00100000
141#define ID_MASK 0x00200000
142
143/* hidden flags - used internally by qemu to represent additional cpu
144 states. Only the CPL, INHIBIT_IRQ, SMM and SVMI are not
145 redundant. We avoid using the IOPL_MASK, TF_MASK and VM_MASK bit
146 position to ease oring with eflags. */
147/* current cpl */
148#define HF_CPL_SHIFT 0
149/* true if soft mmu is being used */
150#define HF_SOFTMMU_SHIFT 2
151/* true if hardware interrupts must be disabled for next instruction */
152#define HF_INHIBIT_IRQ_SHIFT 3
153/* 16 or 32 segments */
154#define HF_CS32_SHIFT 4
155#define HF_SS32_SHIFT 5
156/* zero base for DS, ES and SS : can be '0' only in 32 bit CS segment */
157#define HF_ADDSEG_SHIFT 6
158/* copy of CR0.PE (protected mode) */
159#define HF_PE_SHIFT 7
160#define HF_TF_SHIFT 8 /* must be same as eflags */
161#define HF_MP_SHIFT 9 /* the order must be MP, EM, TS */
162#define HF_EM_SHIFT 10
163#define HF_TS_SHIFT 11
164#define HF_IOPL_SHIFT 12 /* must be same as eflags */
165#define HF_LMA_SHIFT 14 /* only used on x86_64: long mode active */
166#define HF_CS64_SHIFT 15 /* only used on x86_64: 64 bit code segment */
167#define HF_RF_SHIFT 16 /* must be same as eflags */
168#define HF_VM_SHIFT 17 /* must be same as eflags */
169#define HF_SMM_SHIFT 19 /* CPU in SMM mode */
170#define HF_SVME_SHIFT 20 /* SVME enabled (copy of EFER.SVME) */
171#define HF_SVMI_SHIFT 21 /* SVM intercepts are active */
172#define HF_OSFXSR_SHIFT 22 /* CR4.OSFXSR */
173
174#define HF_CPL_MASK (3 << HF_CPL_SHIFT)
175#define HF_SOFTMMU_MASK (1 << HF_SOFTMMU_SHIFT)
176#define HF_INHIBIT_IRQ_MASK (1 << HF_INHIBIT_IRQ_SHIFT)
177#define HF_CS32_MASK (1 << HF_CS32_SHIFT)
178#define HF_SS32_MASK (1 << HF_SS32_SHIFT)
179#define HF_ADDSEG_MASK (1 << HF_ADDSEG_SHIFT)
180#define HF_PE_MASK (1 << HF_PE_SHIFT)
181#define HF_TF_MASK (1 << HF_TF_SHIFT)
182#define HF_MP_MASK (1 << HF_MP_SHIFT)
183#define HF_EM_MASK (1 << HF_EM_SHIFT)
184#define HF_TS_MASK (1 << HF_TS_SHIFT)
185#define HF_IOPL_MASK (3 << HF_IOPL_SHIFT)
186#define HF_LMA_MASK (1 << HF_LMA_SHIFT)
187#define HF_CS64_MASK (1 << HF_CS64_SHIFT)
188#define HF_RF_MASK (1 << HF_RF_SHIFT)
189#define HF_VM_MASK (1 << HF_VM_SHIFT)
190#define HF_SMM_MASK (1 << HF_SMM_SHIFT)
191#define HF_SVME_MASK (1 << HF_SVME_SHIFT)
192#define HF_SVMI_MASK (1 << HF_SVMI_SHIFT)
193#define HF_OSFXSR_MASK (1 << HF_OSFXSR_SHIFT)
194
195/* hflags2 */
196
197#define HF2_GIF_SHIFT 0 /* if set CPU takes interrupts */
198#define HF2_HIF_SHIFT 1 /* value of IF_MASK when entering SVM */
199#define HF2_NMI_SHIFT 2 /* CPU serving NMI */
200#define HF2_VINTR_SHIFT 3 /* value of V_INTR_MASKING bit */
201
202#define HF2_GIF_MASK (1 << HF2_GIF_SHIFT)
203#define HF2_HIF_MASK (1 << HF2_HIF_SHIFT)
204#define HF2_NMI_MASK (1 << HF2_NMI_SHIFT)
205#define HF2_VINTR_MASK (1 << HF2_VINTR_SHIFT)
206
207#define CR0_PE_SHIFT 0
208#define CR0_MP_SHIFT 1
209
210#define CR0_PE_MASK (1 << 0)
211#define CR0_MP_MASK (1 << 1)
212#define CR0_EM_MASK (1 << 2)
213#define CR0_TS_MASK (1 << 3)
214#define CR0_ET_MASK (1 << 4)
215#define CR0_NE_MASK (1 << 5)
216#define CR0_WP_MASK (1 << 16)
217#define CR0_AM_MASK (1 << 18)
218#define CR0_PG_MASK (1 << 31)
219
220#define CR4_VME_MASK (1 << 0)
221#define CR4_PVI_MASK (1 << 1)
222#define CR4_TSD_MASK (1 << 2)
223#define CR4_DE_MASK (1 << 3)
224#define CR4_PSE_MASK (1 << 4)
225#define CR4_PAE_MASK (1 << 5)
226#define CR4_MCE_MASK (1 << 6)
227#define CR4_PGE_MASK (1 << 7)
228#define CR4_PCE_MASK (1 << 8)
229#define CR4_OSFXSR_SHIFT 9
230#define CR4_OSFXSR_MASK (1 << CR4_OSFXSR_SHIFT)
231#define CR4_OSXMMEXCPT_MASK (1 << 10)
232
233#define DR6_BD (1 << 13)
234#define DR6_BS (1 << 14)
235#define DR6_BT (1 << 15)
236#define DR6_FIXED_1 0xffff0ff0
237
238#define DR7_GD (1 << 13)
239#define DR7_TYPE_SHIFT 16
240#define DR7_LEN_SHIFT 18
241#define DR7_FIXED_1 0x00000400
242
243#define PG_PRESENT_BIT 0
244#define PG_RW_BIT 1
245#define PG_USER_BIT 2
246#define PG_PWT_BIT 3
247#define PG_PCD_BIT 4
248#define PG_ACCESSED_BIT 5
249#define PG_DIRTY_BIT 6
250#define PG_PSE_BIT 7
251#define PG_GLOBAL_BIT 8
252#define PG_NX_BIT 63
253
254#define PG_PRESENT_MASK (1 << PG_PRESENT_BIT)
255#define PG_RW_MASK (1 << PG_RW_BIT)
256#define PG_USER_MASK (1 << PG_USER_BIT)
257#define PG_PWT_MASK (1 << PG_PWT_BIT)
258#define PG_PCD_MASK (1 << PG_PCD_BIT)
259#define PG_ACCESSED_MASK (1 << PG_ACCESSED_BIT)
260#define PG_DIRTY_MASK (1 << PG_DIRTY_BIT)
261#define PG_PSE_MASK (1 << PG_PSE_BIT)
262#define PG_GLOBAL_MASK (1 << PG_GLOBAL_BIT)
263#define PG_NX_MASK (1LL << PG_NX_BIT)
264
265#define PG_ERROR_W_BIT 1
266
267#define PG_ERROR_P_MASK 0x01
268#define PG_ERROR_W_MASK (1 << PG_ERROR_W_BIT)
269#define PG_ERROR_U_MASK 0x04
270#define PG_ERROR_RSVD_MASK 0x08
271#define PG_ERROR_I_D_MASK 0x10
272
273#define MCG_CTL_P (1UL<<8) /* MCG_CAP register available */
274
275#define MCE_CAP_DEF MCG_CTL_P
276#define MCE_BANKS_DEF 10
277
278#define MCG_STATUS_MCIP (1ULL<<2) /* machine check in progress */
279
280#define MCI_STATUS_VAL (1ULL<<63) /* valid error */
281#define MCI_STATUS_OVER (1ULL<<62) /* previous errors lost */
282#define MCI_STATUS_UC (1ULL<<61) /* uncorrected error */
283
284#define MSR_IA32_TSC 0x10
285#define MSR_IA32_APICBASE 0x1b
286#define MSR_IA32_APICBASE_BSP (1<<8)
287#define MSR_IA32_APICBASE_ENABLE (1<<11)
288#define MSR_IA32_APICBASE_BASE (0xfffff<<12)
289
290#define MSR_MTRRcap 0xfe
291#define MSR_MTRRcap_VCNT 8
292#define MSR_MTRRcap_FIXRANGE_SUPPORT (1 << 8)
293#define MSR_MTRRcap_WC_SUPPORTED (1 << 10)
294
295#define MSR_IA32_SYSENTER_CS 0x174
296#define MSR_IA32_SYSENTER_ESP 0x175
297#define MSR_IA32_SYSENTER_EIP 0x176
298
299#define MSR_MCG_CAP 0x179
300#define MSR_MCG_STATUS 0x17a
301#define MSR_MCG_CTL 0x17b
302
303#define MSR_IA32_PERF_STATUS 0x198
304
305#define MSR_MTRRphysBase(reg) (0x200 + 2 * (reg))
306#define MSR_MTRRphysMask(reg) (0x200 + 2 * (reg) + 1)
307
308#define MSR_MTRRfix64K_00000 0x250
309#define MSR_MTRRfix16K_80000 0x258
310#define MSR_MTRRfix16K_A0000 0x259
311#define MSR_MTRRfix4K_C0000 0x268
312#define MSR_MTRRfix4K_C8000 0x269
313#define MSR_MTRRfix4K_D0000 0x26a
314#define MSR_MTRRfix4K_D8000 0x26b
315#define MSR_MTRRfix4K_E0000 0x26c
316#define MSR_MTRRfix4K_E8000 0x26d
317#define MSR_MTRRfix4K_F0000 0x26e
318#define MSR_MTRRfix4K_F8000 0x26f
319
320#define MSR_PAT 0x277
321
322#define MSR_MTRRdefType 0x2ff
323
324#define MSR_MC0_CTL 0x400
325#define MSR_MC0_STATUS 0x401
326#define MSR_MC0_ADDR 0x402
327#define MSR_MC0_MISC 0x403
328
329#define MSR_EFER 0xc0000080
330
331#define MSR_EFER_SCE (1 << 0)
332#define MSR_EFER_LME (1 << 8)
333#define MSR_EFER_LMA (1 << 10)
334#define MSR_EFER_NXE (1 << 11)
335#define MSR_EFER_SVME (1 << 12)
336#define MSR_EFER_FFXSR (1 << 14)
337
338#ifdef VBOX
339# define MSR_APIC_RANGE_START 0x800
340# define MSR_APIC_RANGE_END 0x900
341#endif
342
343#define MSR_STAR 0xc0000081
344#define MSR_LSTAR 0xc0000082
345#define MSR_CSTAR 0xc0000083
346#define MSR_FMASK 0xc0000084
347#define MSR_FSBASE 0xc0000100
348#define MSR_GSBASE 0xc0000101
349#define MSR_KERNELGSBASE 0xc0000102
350#define MSR_TSC_AUX 0xc0000103
351
352#define MSR_VM_HSAVE_PA 0xc0010117
353
354/* cpuid_features bits */
355#define CPUID_FP87 (1 << 0)
356#define CPUID_VME (1 << 1)
357#define CPUID_DE (1 << 2)
358#define CPUID_PSE (1 << 3)
359#define CPUID_TSC (1 << 4)
360#define CPUID_MSR (1 << 5)
361#define CPUID_PAE (1 << 6)
362#define CPUID_MCE (1 << 7)
363#define CPUID_CX8 (1 << 8)
364#define CPUID_APIC (1 << 9)
365#define CPUID_SEP (1 << 11) /* sysenter/sysexit */
366#define CPUID_MTRR (1 << 12)
367#define CPUID_PGE (1 << 13)
368#define CPUID_MCA (1 << 14)
369#define CPUID_CMOV (1 << 15)
370#define CPUID_PAT (1 << 16)
371#define CPUID_PSE36 (1 << 17)
372#define CPUID_PN (1 << 18)
373#define CPUID_CLFLUSH (1 << 19)
374#define CPUID_DTS (1 << 21)
375#define CPUID_ACPI (1 << 22)
376#define CPUID_MMX (1 << 23)
377#define CPUID_FXSR (1 << 24)
378#define CPUID_SSE (1 << 25)
379#define CPUID_SSE2 (1 << 26)
380#define CPUID_SS (1 << 27)
381#define CPUID_HT (1 << 28)
382#define CPUID_TM (1 << 29)
383#define CPUID_IA64 (1 << 30)
384#define CPUID_PBE (1 << 31)
385
386#define CPUID_EXT_SSE3 (1 << 0)
387#define CPUID_EXT_DTES64 (1 << 2)
388#define CPUID_EXT_MONITOR (1 << 3)
389#define CPUID_EXT_DSCPL (1 << 4)
390#define CPUID_EXT_VMX (1 << 5)
391#define CPUID_EXT_SMX (1 << 6)
392#define CPUID_EXT_EST (1 << 7)
393#define CPUID_EXT_TM2 (1 << 8)
394#define CPUID_EXT_SSSE3 (1 << 9)
395#define CPUID_EXT_CID (1 << 10)
396#define CPUID_EXT_CX16 (1 << 13)
397#define CPUID_EXT_XTPR (1 << 14)
398#define CPUID_EXT_PDCM (1 << 15)
399#define CPUID_EXT_DCA (1 << 18)
400#define CPUID_EXT_SSE41 (1 << 19)
401#define CPUID_EXT_SSE42 (1 << 20)
402#define CPUID_EXT_X2APIC (1 << 21)
403#define CPUID_EXT_MOVBE (1 << 22)
404#define CPUID_EXT_POPCNT (1 << 23)
405#define CPUID_EXT_XSAVE (1 << 26)
406#define CPUID_EXT_OSXSAVE (1 << 27)
407#define CPUID_EXT_HYPERVISOR (1 << 31)
408
409#define CPUID_EXT2_SYSCALL (1 << 11)
410#define CPUID_EXT2_MP (1 << 19)
411#define CPUID_EXT2_NX (1 << 20)
412#define CPUID_EXT2_MMXEXT (1 << 22)
413#define CPUID_EXT2_FFXSR (1 << 25)
414#define CPUID_EXT2_PDPE1GB (1 << 26)
415#define CPUID_EXT2_RDTSCP (1 << 27)
416#define CPUID_EXT2_LM (1 << 29)
417#define CPUID_EXT2_3DNOWEXT (1 << 30)
418#define CPUID_EXT2_3DNOW (1 << 31)
419
420#define CPUID_EXT3_LAHF_LM (1 << 0)
421#define CPUID_EXT3_CMP_LEG (1 << 1)
422#define CPUID_EXT3_SVM (1 << 2)
423#define CPUID_EXT3_EXTAPIC (1 << 3)
424#define CPUID_EXT3_CR8LEG (1 << 4)
425#define CPUID_EXT3_ABM (1 << 5)
426#define CPUID_EXT3_SSE4A (1 << 6)
427#define CPUID_EXT3_MISALIGNSSE (1 << 7)
428#define CPUID_EXT3_3DNOWPREFETCH (1 << 8)
429#define CPUID_EXT3_OSVW (1 << 9)
430#define CPUID_EXT3_IBS (1 << 10)
431#define CPUID_EXT3_SKINIT (1 << 12)
432
433#define CPUID_VENDOR_INTEL_1 0x756e6547 /* "Genu" */
434#define CPUID_VENDOR_INTEL_2 0x49656e69 /* "ineI" */
435#define CPUID_VENDOR_INTEL_3 0x6c65746e /* "ntel" */
436
437#define CPUID_VENDOR_AMD_1 0x68747541 /* "Auth" */
438#define CPUID_VENDOR_AMD_2 0x69746e65 /* "enti" */
439#define CPUID_VENDOR_AMD_3 0x444d4163 /* "cAMD" */
440
441#define CPUID_MWAIT_IBE (1 << 1) /* Interrupts can exit capability */
442#define CPUID_MWAIT_EMX (1 << 0) /* enumeration supported */
443
444#define EXCP00_DIVZ 0
445#define EXCP01_DB 1
446#define EXCP02_NMI 2
447#define EXCP03_INT3 3
448#define EXCP04_INTO 4
449#define EXCP05_BOUND 5
450#define EXCP06_ILLOP 6
451#define EXCP07_PREX 7
452#define EXCP08_DBLE 8
453#define EXCP09_XERR 9
454#define EXCP0A_TSS 10
455#define EXCP0B_NOSEG 11
456#define EXCP0C_STACK 12
457#define EXCP0D_GPF 13
458#define EXCP0E_PAGE 14
459#define EXCP10_COPR 16
460#define EXCP11_ALGN 17
461#define EXCP12_MCHK 18
462
463#define EXCP_SYSCALL 0x100 /* only happens in user only emulation
464 for syscall instruction */
465
466enum {
467 CC_OP_DYNAMIC, /* must use dynamic code to get cc_op */
468 CC_OP_EFLAGS, /* all cc are explicitly computed, CC_SRC = flags */
469
470 CC_OP_MULB, /* modify all flags, C, O = (CC_SRC != 0) */
471 CC_OP_MULW,
472 CC_OP_MULL,
473 CC_OP_MULQ,
474
475 CC_OP_ADDB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
476 CC_OP_ADDW,
477 CC_OP_ADDL,
478 CC_OP_ADDQ,
479
480 CC_OP_ADCB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
481 CC_OP_ADCW,
482 CC_OP_ADCL,
483 CC_OP_ADCQ,
484
485 CC_OP_SUBB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
486 CC_OP_SUBW,
487 CC_OP_SUBL,
488 CC_OP_SUBQ,
489
490 CC_OP_SBBB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
491 CC_OP_SBBW,
492 CC_OP_SBBL,
493 CC_OP_SBBQ,
494
495 CC_OP_LOGICB, /* modify all flags, CC_DST = res */
496 CC_OP_LOGICW,
497 CC_OP_LOGICL,
498 CC_OP_LOGICQ,
499
500 CC_OP_INCB, /* modify all flags except, CC_DST = res, CC_SRC = C */
501 CC_OP_INCW,
502 CC_OP_INCL,
503 CC_OP_INCQ,
504
505 CC_OP_DECB, /* modify all flags except, CC_DST = res, CC_SRC = C */
506 CC_OP_DECW,
507 CC_OP_DECL,
508 CC_OP_DECQ,
509
510 CC_OP_SHLB, /* modify all flags, CC_DST = res, CC_SRC.msb = C */
511 CC_OP_SHLW,
512 CC_OP_SHLL,
513 CC_OP_SHLQ,
514
515 CC_OP_SARB, /* modify all flags, CC_DST = res, CC_SRC.lsb = C */
516 CC_OP_SARW,
517 CC_OP_SARL,
518 CC_OP_SARQ,
519
520 CC_OP_NB,
521};
522
523#ifdef FLOATX80
524#define USE_X86LDOUBLE
525#endif
526
527#ifdef USE_X86LDOUBLE
528typedef floatx80 CPU86_LDouble;
529#else
530typedef float64 CPU86_LDouble;
531#endif
532
533typedef struct SegmentCache {
534 uint32_t selector;
535#ifdef VBOX
536 /** The new selector is saved here when we are unable to sync it before invoking the recompiled code. */
537 uint16_t newselector;
538 uint16_t fVBoxFlags;
539#endif
540 target_ulong base;
541 uint32_t limit;
542 uint32_t flags;
543} SegmentCache;
544
545typedef union {
546 uint8_t _b[16];
547 uint16_t _w[8];
548 uint32_t _l[4];
549 uint64_t _q[2];
550 float32 _s[4];
551 float64 _d[2];
552} XMMReg;
553
554typedef union {
555 uint8_t _b[8];
556 uint16_t _w[4];
557 uint32_t _l[2];
558 float32 _s[2];
559 uint64_t q;
560} MMXReg;
561
562#ifdef HOST_WORDS_BIGENDIAN
563#define XMM_B(n) _b[15 - (n)]
564#define XMM_W(n) _w[7 - (n)]
565#define XMM_L(n) _l[3 - (n)]
566#define XMM_S(n) _s[3 - (n)]
567#define XMM_Q(n) _q[1 - (n)]
568#define XMM_D(n) _d[1 - (n)]
569
570#define MMX_B(n) _b[7 - (n)]
571#define MMX_W(n) _w[3 - (n)]
572#define MMX_L(n) _l[1 - (n)]
573#define MMX_S(n) _s[1 - (n)]
574#else
575#define XMM_B(n) _b[n]
576#define XMM_W(n) _w[n]
577#define XMM_L(n) _l[n]
578#define XMM_S(n) _s[n]
579#define XMM_Q(n) _q[n]
580#define XMM_D(n) _d[n]
581
582#define MMX_B(n) _b[n]
583#define MMX_W(n) _w[n]
584#define MMX_L(n) _l[n]
585#define MMX_S(n) _s[n]
586#endif
587#define MMX_Q(n) q
588
589typedef union {
590#ifdef USE_X86LDOUBLE
591 CPU86_LDouble d __attribute__((aligned(16)));
592#else
593 CPU86_LDouble d;
594#endif
595 MMXReg mmx;
596} FPReg;
597
598typedef struct {
599 uint64_t base;
600 uint64_t mask;
601} MTRRVar;
602
603#define CPU_NB_REGS64 16
604#define CPU_NB_REGS32 8
605
606#ifdef TARGET_X86_64
607#define CPU_NB_REGS CPU_NB_REGS64
608#else
609#define CPU_NB_REGS CPU_NB_REGS32
610#endif
611
612#define NB_MMU_MODES 2
613
614typedef struct CPUX86State {
615 /* standard registers */
616 target_ulong regs[CPU_NB_REGS];
617 target_ulong eip;
618 target_ulong eflags; /* eflags register. During CPU emulation, CC
619 flags and DF are set to zero because they are
620 stored elsewhere */
621
622 /* emulator internal eflags handling */
623 target_ulong cc_src;
624 target_ulong cc_dst;
625 uint32_t cc_op;
626 int32_t df; /* D flag : 1 if D = 0, -1 if D = 1 */
627 uint32_t hflags; /* TB flags, see HF_xxx constants. These flags
628 are known at translation time. */
629 uint32_t hflags2; /* various other flags, see HF2_xxx constants. */
630
631 /* segments */
632 SegmentCache segs[6]; /* selector values */
633 SegmentCache ldt;
634 SegmentCache tr;
635 SegmentCache gdt; /* only base and limit are used */
636 SegmentCache idt; /* only base and limit are used */
637
638 target_ulong cr[5]; /* NOTE: cr1 is unused */
639 int32_t a20_mask;
640
641 /* FPU state */
642 unsigned int fpstt; /* top of stack index */
643 uint16_t fpus;
644 uint16_t fpuc;
645 uint8_t fptags[8]; /* 0 = valid, 1 = empty */
646 FPReg fpregs[8];
647
648 /* emulator internal variables */
649 float_status fp_status;
650#ifdef VBOX
651 uint32_t alignment3[3]; /* force the long double to start a 16 byte line. */
652#endif
653 CPU86_LDouble ft0;
654#if defined(VBOX) && defined(RT_ARCH_X86) && !defined(RT_OS_DARWIN)
655 uint32_t alignment4; /* long double is 12 byte, pad it to 16. */
656#endif
657
658 float_status mmx_status; /* for 3DNow! float ops */
659 float_status sse_status;
660 uint32_t mxcsr;
661 XMMReg xmm_regs[CPU_NB_REGS];
662 XMMReg xmm_t0;
663 MMXReg mmx_t0;
664 target_ulong cc_tmp; /* temporary for rcr/rcl */
665
666 /* sysenter registers */
667 uint32_t sysenter_cs;
668#ifdef VBOX
669 uint32_t alignment0;
670#endif
671 target_ulong sysenter_esp;
672 target_ulong sysenter_eip;
673 uint64_t efer;
674 uint64_t star;
675
676 uint64_t vm_hsave;
677 uint64_t vm_vmcb;
678 uint64_t tsc_offset;
679 uint64_t intercept;
680 uint16_t intercept_cr_read;
681 uint16_t intercept_cr_write;
682 uint16_t intercept_dr_read;
683 uint16_t intercept_dr_write;
684 uint32_t intercept_exceptions;
685 uint8_t v_tpr;
686
687#ifdef TARGET_X86_64
688 target_ulong lstar;
689 target_ulong cstar;
690 target_ulong fmask;
691 target_ulong kernelgsbase;
692#endif
693 uint64_t system_time_msr;
694 uint64_t wall_clock_msr;
695
696 uint64_t tsc;
697
698 uint64_t pat;
699
700 /* exception/interrupt handling */
701 int error_code;
702 int exception_is_int;
703 target_ulong exception_next_eip;
704 target_ulong dr[8]; /* debug registers */
705 union {
706 CPUBreakpoint *cpu_breakpoint[4];
707 CPUWatchpoint *cpu_watchpoint[4];
708 }; /* break/watchpoints for dr[0..3] */
709 uint32_t smbase;
710 int old_exception; /* exception in flight */
711
712 CPU_COMMON
713
714#ifdef VBOX
715 /** cpu state flags. (see defines below) */
716 uint32_t state;
717 /** The VM handle. */
718 PVM pVM;
719 /** The VMCPU handle. */
720 PVMCPU pVCpu;
721 /** code buffer for instruction emulation */
722 void *pvCodeBuffer;
723 /** code buffer size */
724 uint32_t cbCodeBuffer;
725#endif /* VBOX */
726
727 /* processor features (e.g. for CPUID insn) */
728#ifndef VBOX /* remR3CpuId deals with these */
729 uint32_t cpuid_level;
730 uint32_t cpuid_vendor1;
731 uint32_t cpuid_vendor2;
732 uint32_t cpuid_vendor3;
733 uint32_t cpuid_version;
734#endif /* !VBOX */
735 uint32_t cpuid_features;
736 uint32_t cpuid_ext_features;
737#ifndef VBOX
738 uint32_t cpuid_xlevel;
739 uint32_t cpuid_model[12];
740#endif /* !VBOX */
741 uint32_t cpuid_ext2_features;
742 uint32_t cpuid_ext3_features;
743 uint32_t cpuid_apic_id;
744#ifndef VBOX
745 int cpuid_vendor_override;
746
747 /* MTRRs */
748 uint64_t mtrr_fixed[11];
749 uint64_t mtrr_deftype;
750 MTRRVar mtrr_var[8];
751
752 /* For KVM */
753 uint32_t mp_state;
754 int32_t exception_injected;
755 int32_t interrupt_injected;
756 uint8_t soft_interrupt;
757 uint8_t nmi_injected;
758 uint8_t nmi_pending;
759 uint8_t has_error_code;
760 uint32_t sipi_vector;
761
762 uint32_t cpuid_kvm_features;
763
764 /* in order to simplify APIC support, we leave this pointer to the
765 user */
766 struct DeviceState *apic_state;
767
768 uint64 mcg_cap;
769 uint64 mcg_status;
770 uint64 mcg_ctl;
771 uint64 mce_banks[MCE_BANKS_DEF*4];
772
773 uint64_t tsc_aux;
774
775 /* vmstate */
776 uint16_t fpus_vmstate;
777 uint16_t fptag_vmstate;
778 uint16_t fpregs_format_vmstate;
779
780 uint64_t xstate_bv;
781 XMMReg ymmh_regs[CPU_NB_REGS];
782
783 uint64_t xcr0;
784#else /* VBOX */
785
786 /** Alignment padding. */
787# if HC_ARCH_BITS == 64 \
788 || ( HC_ARCH_BITS == 32 \
789 && !defined(RT_OS_WINDOWS) \
790 && ( (!defined(VBOX_ENABLE_VBOXREM64) && !defined(RT_OS_SOLARIS) && !defined(RT_OS_FREEBSD)) \
791 || (defined(VBOX_ENABLE_VBOXREM64) && (defined(RT_OS_SOLARIS) || defined(RT_OS_FREEBSD))) ) )
792 uint32_t alignment2[1];
793# endif
794
795 /** Profiling tb_flush. */
796 STAMPROFILE StatTbFlush;
797
798 /** Addends for HVA -> GPA translations. */
799 target_phys_addr_t phys_addends[NB_MMU_MODES][CPU_TLB_SIZE];
800#endif /* VBOX */
801} CPUX86State;
802
803#ifdef VBOX
804
805/* Version 1.6 structure; just for loading the old saved state */
806typedef struct SegmentCache_Ver16 {
807 uint32_t selector;
808 uint32_t base;
809 uint32_t limit;
810 uint32_t flags;
811 /** The new selector is saved here when we are unable to sync it before invoking the recompiled code. */
812 uint32_t newselector;
813} SegmentCache_Ver16;
814
815# define CPU_NB_REGS_VER16 8
816
817/* Version 1.6 structure; just for loading the old saved state */
818typedef struct CPUX86State_Ver16 {
819# if TARGET_LONG_BITS > HOST_LONG_BITS
820 /* temporaries if we cannot store them in host registers */
821 uint32_t t0, t1, t2;
822# endif
823
824 /* standard registers */
825 uint32_t regs[CPU_NB_REGS_VER16];
826 uint32_t eip;
827 uint32_t eflags; /* eflags register. During CPU emulation, CC
828 flags and DF are set to zero because they are
829 stored elsewhere */
830
831 /* emulator internal eflags handling */
832 uint32_t cc_src;
833 uint32_t cc_dst;
834 uint32_t cc_op;
835 int32_t df; /* D flag : 1 if D = 0, -1 if D = 1 */
836 uint32_t hflags; /* hidden flags, see HF_xxx constants */
837
838 /* segments */
839 SegmentCache_Ver16 segs[6]; /* selector values */
840 SegmentCache_Ver16 ldt;
841 SegmentCache_Ver16 tr;
842 SegmentCache_Ver16 gdt; /* only base and limit are used */
843 SegmentCache_Ver16 idt; /* only base and limit are used */
844
845 uint32_t cr[5]; /* NOTE: cr1 is unused */
846 uint32_t a20_mask;
847
848 /* FPU state */
849 unsigned int fpstt; /* top of stack index */
850 unsigned int fpus;
851 unsigned int fpuc;
852 uint8_t fptags[8]; /* 0 = valid, 1 = empty */
853 union {
854# ifdef USE_X86LDOUBLE
855 CPU86_LDouble d __attribute__((aligned(16)));
856# else
857 CPU86_LDouble d;
858# endif
859 MMXReg mmx;
860 } fpregs[8];
861
862 /* emulator internal variables */
863 float_status fp_status;
864# ifdef VBOX
865 uint32_t alignment3[3]; /* force the long double to start a 16 byte line. */
866# endif
867 CPU86_LDouble ft0;
868# if defined(VBOX) && defined(RT_ARCH_X86) && !defined(RT_OS_DARWIN)
869 uint32_t alignment4; /* long double is 12 byte, pad it to 16. */
870# endif
871 union {
872 float f;
873 double d;
874 int i32;
875 int64_t i64;
876 } fp_convert;
877
878 float_status sse_status;
879 uint32_t mxcsr;
880 XMMReg xmm_regs[CPU_NB_REGS_VER16];
881 XMMReg xmm_t0;
882 MMXReg mmx_t0;
883
884 /* sysenter registers */
885 uint32_t sysenter_cs;
886 uint32_t sysenter_esp;
887 uint32_t sysenter_eip;
888# ifdef VBOX
889 uint32_t alignment0;
890# endif
891 uint64_t efer;
892 uint64_t star;
893
894 uint64_t pat;
895
896 /* temporary data for USE_CODE_COPY mode */
897# ifdef USE_CODE_COPY
898 uint32_t tmp0;
899 uint32_t saved_esp;
900 int native_fp_regs; /* if true, the FPU state is in the native CPU regs */
901# endif
902
903 /* exception/interrupt handling */
904 jmp_buf jmp_env;
905} CPUX86State_Ver16;
906
907/** CPUX86State state flags
908 * @{ */
909# define CPU_RAW_RING0 0x0002 /* Set after first time RawR0 is executed, never cleared. */
910# define CPU_EMULATE_SINGLE_INSTR 0x0040 /* Execute a single instruction in emulation mode */
911# define CPU_EMULATE_SINGLE_STEP 0x0080 /* go into single step mode */
912# define CPU_RAW_HWACC 0x0100 /* Set after first time HWACC is executed, never cleared. */
913/** @} */
914#endif /* !VBOX */
915
916#ifdef VBOX
917CPUX86State *cpu_x86_init(CPUX86State *env, const char *cpu_model);
918#else /* !VBOX */
919CPUX86State *cpu_x86_init(const char *cpu_model);
920#endif /* !VBOX */
921int cpu_x86_exec(CPUX86State *s);
922void cpu_x86_close(CPUX86State *s);
923void x86_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt, ...),
924 const char *optarg);
925void x86_cpudef_setup(void);
926
927int cpu_get_pic_interrupt(CPUX86State *s);
928/* MSDOS compatibility mode FPU exception support */
929void cpu_set_ferr(CPUX86State *s);
930
931/* this function must always be used to load data in the segment
932 cache: it synchronizes the hflags with the segment cache values */
933static inline void cpu_x86_load_seg_cache(CPUX86State *env,
934 int seg_reg, unsigned int selector,
935 target_ulong base,
936 unsigned int limit,
937 unsigned int flags)
938{
939 SegmentCache *sc;
940 unsigned int new_hflags;
941
942 sc = &env->segs[seg_reg];
943 sc->selector = selector;
944 sc->base = base;
945 sc->limit = limit;
946#ifndef VBOX
947 sc->flags = flags;
948#else
949 if (flags & DESC_P_MASK)
950 flags |= DESC_A_MASK; /* Make sure the A bit is set to avoid trouble. */
951 sc->flags = flags;
952 sc->newselector = 0;
953 sc->fVBoxFlags = CPUMSELREG_FLAGS_VALID;
954#endif
955
956 /* update the hidden flags */
957 {
958 if (seg_reg == R_CS) {
959#ifdef TARGET_X86_64
960 if ((env->hflags & HF_LMA_MASK) && (flags & DESC_L_MASK)) {
961 /* long mode */
962 env->hflags |= HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK;
963 env->hflags &= ~(HF_ADDSEG_MASK);
964 } else
965#endif
966 {
967 /* legacy / compatibility case */
968 new_hflags = (env->segs[R_CS].flags & DESC_B_MASK)
969 >> (DESC_B_SHIFT - HF_CS32_SHIFT);
970 env->hflags = (env->hflags & ~(HF_CS32_MASK | HF_CS64_MASK)) |
971 new_hflags;
972 }
973 }
974 new_hflags = (env->segs[R_SS].flags & DESC_B_MASK)
975 >> (DESC_B_SHIFT - HF_SS32_SHIFT);
976 if (env->hflags & HF_CS64_MASK) {
977 /* zero base assumed for DS, ES and SS in long mode */
978 } else if (!(env->cr[0] & CR0_PE_MASK) ||
979 (env->eflags & VM_MASK) ||
980 !(env->hflags & HF_CS32_MASK)) {
981 /* XXX: try to avoid this test. The problem comes from the
982 fact that is real mode or vm86 mode we only modify the
983 'base' and 'selector' fields of the segment cache to go
984 faster. A solution may be to force addseg to one in
985 translate-i386.c. */
986 new_hflags |= HF_ADDSEG_MASK;
987 } else {
988 new_hflags |= ((env->segs[R_DS].base |
989 env->segs[R_ES].base |
990 env->segs[R_SS].base) != 0) <<
991 HF_ADDSEG_SHIFT;
992 }
993 env->hflags = (env->hflags &
994 ~(HF_SS32_MASK | HF_ADDSEG_MASK)) | new_hflags;
995 }
996}
997
998static inline void cpu_x86_load_seg_cache_sipi(CPUX86State *env,
999 int sipi_vector)
1000{
1001 env->eip = 0;
1002 cpu_x86_load_seg_cache(env, R_CS, sipi_vector << 8,
1003 sipi_vector << 12,
1004 env->segs[R_CS].limit,
1005 env->segs[R_CS].flags);
1006 env->halted = 0;
1007}
1008
1009int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector,
1010 target_ulong *base, unsigned int *limit,
1011 unsigned int *flags);
1012
1013/* wrapper, just in case memory mappings must be changed */
1014static inline void cpu_x86_set_cpl(CPUX86State *s, int cpl)
1015{
1016#if HF_CPL_MASK == 3
1017 s->hflags = (s->hflags & ~HF_CPL_MASK) | cpl;
1018#else
1019#error HF_CPL_MASK is hardcoded
1020#endif
1021}
1022
1023/* op_helper.c */
1024/* used for debug or cpu save/restore */
1025void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f);
1026CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper);
1027
1028/* cpu-exec.c */
1029/* the following helpers are only usable in user mode simulation as
1030 they can trigger unexpected exceptions */
1031void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector);
1032void cpu_x86_fsave(CPUX86State *s, target_ulong ptr, int data32);
1033void cpu_x86_frstor(CPUX86State *s, target_ulong ptr, int data32);
1034
1035/* you can call this signal handler from your SIGBUS and SIGSEGV
1036 signal handlers to inform the virtual CPU of exceptions. non zero
1037 is returned if the signal was handled by the virtual CPU. */
1038int cpu_x86_signal_handler(int host_signum, void *pinfo,
1039 void *puc);
1040
1041/* cpuid.c */
1042void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
1043 uint32_t *eax, uint32_t *ebx,
1044 uint32_t *ecx, uint32_t *edx);
1045int cpu_x86_register (CPUX86State *env, const char *cpu_model);
1046void cpu_clear_apic_feature(CPUX86State *env);
1047
1048/* helper.c */
1049int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
1050 int is_write, int mmu_idx, int is_softmmu);
1051#define cpu_handle_mmu_fault cpu_x86_handle_mmu_fault
1052void cpu_x86_set_a20(CPUX86State *env, int a20_state);
1053
1054static inline int hw_breakpoint_enabled(unsigned long dr7, int index)
1055{
1056 return (dr7 >> (index * 2)) & 3;
1057}
1058
1059static inline int hw_breakpoint_type(unsigned long dr7, int index)
1060{
1061 return (dr7 >> (DR7_TYPE_SHIFT + (index * 4))) & 3;
1062}
1063
1064static inline int hw_breakpoint_len(unsigned long dr7, int index)
1065{
1066 int len = ((dr7 >> (DR7_LEN_SHIFT + (index * 4))) & 3);
1067 return (len == 2) ? 8 : len + 1;
1068}
1069
1070void hw_breakpoint_insert(CPUX86State *env, int index);
1071void hw_breakpoint_remove(CPUX86State *env, int index);
1072int check_hw_breakpoints(CPUX86State *env, int force_dr6_update);
1073
1074/* will be suppressed */
1075void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0);
1076void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3);
1077void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4);
1078
1079/* hw/pc.c */
1080void cpu_smm_update(CPUX86State *env);
1081uint64_t cpu_get_tsc(CPUX86State *env);
1082
1083/* used to debug */
1084#define X86_DUMP_FPU 0x0001 /* dump FPU state too */
1085#define X86_DUMP_CCOP 0x0002 /* dump qemu flag cache */
1086
1087#ifdef VBOX
1088int cpu_rdmsr(CPUX86State *env, uint32_t idMsr, uint64_t *puValue);
1089int cpu_wrmsr(CPUX86State *env, uint32_t idMsr, uint64_t uValue);
1090void cpu_trap_raw(CPUX86State *env1);
1091
1092/* in helper.c */
1093uint8_t read_byte(CPUX86State *env1, target_ulong addr);
1094uint16_t read_word(CPUX86State *env1, target_ulong addr);
1095void write_byte(CPUX86State *env1, target_ulong addr, uint8_t val);
1096uint32_t read_dword(CPUX86State *env1, target_ulong addr);
1097void write_word(CPUX86State *env1, target_ulong addr, uint16_t val);
1098void write_dword(CPUX86State *env1, target_ulong addr, uint32_t val);
1099/* in helper.c */
1100int emulate_single_instr(CPUX86State *env1);
1101int get_ss_esp_from_tss_raw(CPUX86State *env1, uint32_t *ss_ptr, uint32_t *esp_ptr, int dpl);
1102
1103void restore_raw_fp_state(CPUX86State *env, uint8_t *ptr);
1104void save_raw_fp_state(CPUX86State *env, uint8_t *ptr);
1105#endif /* VBOX */
1106
1107#define TARGET_PAGE_BITS 12
1108
1109#ifdef TARGET_X86_64
1110#define TARGET_PHYS_ADDR_SPACE_BITS 52
1111/* ??? This is really 48 bits, sign-extended, but the only thing
1112 accessible to userland with bit 48 set is the VSYSCALL, and that
1113 is handled via other mechanisms. */
1114#define TARGET_VIRT_ADDR_SPACE_BITS 47
1115#else
1116#define TARGET_PHYS_ADDR_SPACE_BITS 36
1117#define TARGET_VIRT_ADDR_SPACE_BITS 32
1118#endif
1119
1120#define cpu_init cpu_x86_init
1121#define cpu_exec cpu_x86_exec
1122#define cpu_gen_code cpu_x86_gen_code
1123#define cpu_signal_handler cpu_x86_signal_handler
1124#define cpu_list_id x86_cpu_list
1125#define cpudef_setup x86_cpudef_setup
1126
1127#define CPU_SAVE_VERSION 12
1128
1129/* MMU modes definitions */
1130#define MMU_MODE0_SUFFIX _kernel
1131#define MMU_MODE1_SUFFIX _user
1132#define MMU_USER_IDX 1
1133static inline int cpu_mmu_index (CPUState *env)
1134{
1135 return (env->hflags & HF_CPL_MASK) == 3 ? 1 : 0;
1136}
1137
1138/* translate.c */
1139void optimize_flags_init(void);
1140
1141typedef struct CCTable {
1142 int (*compute_all)(void); /* return all the flags */
1143 int (*compute_c)(void); /* return the C flag */
1144} CCTable;
1145
1146#if defined(CONFIG_USER_ONLY)
1147static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
1148{
1149 if (newsp)
1150 env->regs[R_ESP] = newsp;
1151 env->regs[R_EAX] = 0;
1152}
1153#endif
1154
1155#include "cpu-all.h"
1156#include "svm.h"
1157
1158#ifndef VBOX
1159#if !defined(CONFIG_USER_ONLY)
1160#include "hw/apic.h"
1161#endif
1162#else /* VBOX */
1163extern void cpu_set_apic_tpr(CPUX86State *env, uint8_t val);
1164extern uint8_t cpu_get_apic_tpr(CPUX86State *env);
1165extern uint64_t cpu_get_apic_base(CPUX86State *env);
1166#endif /* VBOX */
1167
1168static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
1169 target_ulong *cs_base, int *flags)
1170{
1171 *cs_base = env->segs[R_CS].base;
1172 *pc = *cs_base + env->eip;
1173 *flags = env->hflags |
1174 (env->eflags & (IOPL_MASK | TF_MASK | RF_MASK | VM_MASK));
1175}
1176
1177#ifndef VBOX
1178void apic_init_reset(CPUState *env);
1179void apic_sipi(CPUState *env);
1180void do_cpu_init(CPUState *env);
1181void do_cpu_sipi(CPUState *env);
1182#endif /* !VBOX */
1183#endif /* CPU_I386_H */
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