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b2441318 | 1 | /* SPDX-License-Identifier: GPL-2.0 */ |
6aa8b732 AK |
2 | /****************************************************************************** |
3 | * x86_emulate.h | |
4 | * | |
5 | * Generic x86 (32-bit and 64-bit) instruction decoder and emulator. | |
6 | * | |
7 | * Copyright (c) 2005 Keir Fraser | |
8 | * | |
9 | * From: xen-unstable 10676:af9809f51f81a3c43f276f00c81a52ef558afda4 | |
10 | */ | |
11 | ||
1965aae3 PA |
12 | #ifndef _ASM_X86_KVM_X86_EMULATE_H |
13 | #define _ASM_X86_KVM_X86_EMULATE_H | |
6aa8b732 | 14 | |
38ba30ba GN |
15 | #include <asm/desc_defs.h> |
16 | ||
6aa8b732 | 17 | struct x86_emulate_ctxt; |
c4f035c6 AK |
18 | enum x86_intercept; |
19 | enum x86_intercept_stage; | |
6aa8b732 | 20 | |
da9cb575 AK |
21 | struct x86_exception { |
22 | u8 vector; | |
23 | bool error_code_valid; | |
24 | u16 error_code; | |
6389ee94 AK |
25 | bool nested_page_fault; |
26 | u64 address; /* cr2 or nested page fault gpa */ | |
adfe20fb | 27 | u8 async_page_fault; |
da9cb575 AK |
28 | }; |
29 | ||
8a76d7f2 JR |
30 | /* |
31 | * This struct is used to carry enough information from the instruction | |
32 | * decoder to main KVM so that a decision can be made whether the | |
33 | * instruction needs to be intercepted or not. | |
34 | */ | |
35 | struct x86_instruction_info { | |
36 | u8 intercept; /* which intercept */ | |
37 | u8 rep_prefix; /* rep prefix? */ | |
38 | u8 modrm_mod; /* mod part of modrm */ | |
39 | u8 modrm_reg; /* index of register used */ | |
40 | u8 modrm_rm; /* rm part of modrm */ | |
41 | u64 src_val; /* value of source operand */ | |
6cbc5f5a | 42 | u64 dst_val; /* value of destination operand */ |
8a76d7f2 JR |
43 | u8 src_bytes; /* size of source operand */ |
44 | u8 dst_bytes; /* size of destination operand */ | |
45 | u8 ad_bytes; /* size of src/dst address */ | |
46 | u64 next_rip; /* rip following the instruction */ | |
47 | }; | |
48 | ||
6aa8b732 AK |
49 | /* |
50 | * x86_emulate_ops: | |
51 | * | |
52 | * These operations represent the instruction emulator's interface to memory. | |
53 | * There are two categories of operation: those that act on ordinary memory | |
54 | * regions (*_std), and those that act on memory regions known to require | |
55 | * special treatment or emulation (*_emulated). | |
56 | * | |
57 | * The emulator assumes that an instruction accesses only one 'emulated memory' | |
58 | * location, that this location is the given linear faulting address (cr2), and | |
59 | * that this is one of the instruction's data operands. Instruction fetches and | |
60 | * stack operations are assumed never to access emulated memory. The emulator | |
61 | * automatically deduces which operand of a string-move operation is accessing | |
62 | * emulated memory, and assumes that the other operand accesses normal memory. | |
63 | * | |
64 | * NOTES: | |
65 | * 1. The emulator isn't very smart about emulated vs. standard memory. | |
66 | * 'Emulated memory' access addresses should be checked for sanity. | |
67 | * 'Normal memory' accesses may fault, and the caller must arrange to | |
68 | * detect and handle reentrancy into the emulator via recursive faults. | |
69 | * Accesses may be unaligned and may cross page boundaries. | |
70 | * 2. If the access fails (cannot emulate, or a standard access faults) then | |
71 | * it is up to the memop to propagate the fault to the guest VM via | |
72 | * some out-of-band mechanism, unknown to the emulator. The memop signals | |
73 | * failure by returning X86EMUL_PROPAGATE_FAULT to the emulator, which will | |
74 | * then immediately bail. | |
75 | * 3. Valid access sizes are 1, 2, 4 and 8 bytes. On x86/32 systems only | |
76 | * cmpxchg8b_emulated need support 8-byte accesses. | |
77 | * 4. The emulator cannot handle 64-bit mode emulation on an x86/32 system. | |
78 | */ | |
79 | /* Access completed successfully: continue emulation as normal. */ | |
80 | #define X86EMUL_CONTINUE 0 | |
81 | /* Access is unhandleable: bail from emulation and return error to caller. */ | |
82 | #define X86EMUL_UNHANDLEABLE 1 | |
83 | /* Terminate emulation but return success to the caller. */ | |
84 | #define X86EMUL_PROPAGATE_FAULT 2 /* propagate a generated fault to guest */ | |
e680080e GN |
85 | #define X86EMUL_RETRY_INSTR 3 /* retry the instruction for some reason */ |
86 | #define X86EMUL_CMPXCHG_FAILED 4 /* cmpxchg did not see expected value */ | |
c3cd7ffa | 87 | #define X86EMUL_IO_NEEDED 5 /* IO is needed to complete emulation */ |
c4f035c6 | 88 | #define X86EMUL_INTERCEPTED 6 /* Intercepted by nested VMCB/VMCS */ |
e680080e | 89 | |
6aa8b732 | 90 | struct x86_emulate_ops { |
dd856efa AK |
91 | /* |
92 | * read_gpr: read a general purpose register (rax - r15) | |
93 | * | |
94 | * @reg: gpr number. | |
95 | */ | |
96 | ulong (*read_gpr)(struct x86_emulate_ctxt *ctxt, unsigned reg); | |
97 | /* | |
98 | * write_gpr: write a general purpose register (rax - r15) | |
99 | * | |
100 | * @reg: gpr number. | |
101 | * @val: value to write. | |
102 | */ | |
103 | void (*write_gpr)(struct x86_emulate_ctxt *ctxt, unsigned reg, ulong val); | |
6aa8b732 AK |
104 | /* |
105 | * read_std: Read bytes of standard (non-emulated/special) memory. | |
1871c602 | 106 | * Used for descriptor reading. |
6aa8b732 AK |
107 | * @addr: [IN ] Linear address from which to read. |
108 | * @val: [OUT] Value read from memory, zero-extended to 'u_long'. | |
109 | * @bytes: [IN ] Number of bytes to read from memory. | |
110 | */ | |
0f65dd70 AK |
111 | int (*read_std)(struct x86_emulate_ctxt *ctxt, |
112 | unsigned long addr, void *val, | |
113 | unsigned int bytes, | |
bcc55cba | 114 | struct x86_exception *fault); |
1871c602 | 115 | |
7a036a6f RK |
116 | /* |
117 | * read_phys: Read bytes of standard (non-emulated/special) memory. | |
118 | * Used for descriptor reading. | |
119 | * @addr: [IN ] Physical address from which to read. | |
120 | * @val: [OUT] Value read from memory. | |
121 | * @bytes: [IN ] Number of bytes to read from memory. | |
122 | */ | |
123 | int (*read_phys)(struct x86_emulate_ctxt *ctxt, unsigned long addr, | |
124 | void *val, unsigned int bytes); | |
125 | ||
2dafc6c2 GN |
126 | /* |
127 | * write_std: Write bytes of standard (non-emulated/special) memory. | |
128 | * Used for descriptor writing. | |
129 | * @addr: [IN ] Linear address to which to write. | |
130 | * @val: [OUT] Value write to memory, zero-extended to 'u_long'. | |
131 | * @bytes: [IN ] Number of bytes to write to memory. | |
132 | */ | |
0f65dd70 AK |
133 | int (*write_std)(struct x86_emulate_ctxt *ctxt, |
134 | unsigned long addr, void *val, unsigned int bytes, | |
bcc55cba | 135 | struct x86_exception *fault); |
1871c602 GN |
136 | /* |
137 | * fetch: Read bytes of standard (non-emulated/special) memory. | |
138 | * Used for instruction fetch. | |
139 | * @addr: [IN ] Linear address from which to read. | |
140 | * @val: [OUT] Value read from memory, zero-extended to 'u_long'. | |
141 | * @bytes: [IN ] Number of bytes to read from memory. | |
142 | */ | |
0f65dd70 AK |
143 | int (*fetch)(struct x86_emulate_ctxt *ctxt, |
144 | unsigned long addr, void *val, unsigned int bytes, | |
bcc55cba | 145 | struct x86_exception *fault); |
6aa8b732 AK |
146 | |
147 | /* | |
148 | * read_emulated: Read bytes from emulated/special memory area. | |
149 | * @addr: [IN ] Linear address from which to read. | |
150 | * @val: [OUT] Value read from memory, zero-extended to 'u_long'. | |
151 | * @bytes: [IN ] Number of bytes to read from memory. | |
152 | */ | |
0f65dd70 AK |
153 | int (*read_emulated)(struct x86_emulate_ctxt *ctxt, |
154 | unsigned long addr, void *val, unsigned int bytes, | |
155 | struct x86_exception *fault); | |
6aa8b732 AK |
156 | |
157 | /* | |
0d178975 | 158 | * write_emulated: Write bytes to emulated/special memory area. |
6aa8b732 AK |
159 | * @addr: [IN ] Linear address to which to write. |
160 | * @val: [IN ] Value to write to memory (low-order bytes used as | |
161 | * required). | |
162 | * @bytes: [IN ] Number of bytes to write to memory. | |
163 | */ | |
0f65dd70 AK |
164 | int (*write_emulated)(struct x86_emulate_ctxt *ctxt, |
165 | unsigned long addr, const void *val, | |
0c7825e6 | 166 | unsigned int bytes, |
0f65dd70 | 167 | struct x86_exception *fault); |
6aa8b732 AK |
168 | |
169 | /* | |
170 | * cmpxchg_emulated: Emulate an atomic (LOCKed) CMPXCHG operation on an | |
171 | * emulated/special memory area. | |
172 | * @addr: [IN ] Linear address to access. | |
173 | * @old: [IN ] Value expected to be current at @addr. | |
174 | * @new: [IN ] Value to write to @addr. | |
175 | * @bytes: [IN ] Number of bytes to access using CMPXCHG. | |
176 | */ | |
0f65dd70 AK |
177 | int (*cmpxchg_emulated)(struct x86_emulate_ctxt *ctxt, |
178 | unsigned long addr, | |
0c7825e6 JP |
179 | const void *old, |
180 | const void *new, | |
181 | unsigned int bytes, | |
0f65dd70 | 182 | struct x86_exception *fault); |
3cb16fe7 | 183 | void (*invlpg)(struct x86_emulate_ctxt *ctxt, ulong addr); |
cf8f70bf | 184 | |
ca1d4a9e AK |
185 | int (*pio_in_emulated)(struct x86_emulate_ctxt *ctxt, |
186 | int size, unsigned short port, void *val, | |
187 | unsigned int count); | |
cf8f70bf | 188 | |
ca1d4a9e AK |
189 | int (*pio_out_emulated)(struct x86_emulate_ctxt *ctxt, |
190 | int size, unsigned short port, const void *val, | |
191 | unsigned int count); | |
cf8f70bf | 192 | |
1aa36616 AK |
193 | bool (*get_segment)(struct x86_emulate_ctxt *ctxt, u16 *selector, |
194 | struct desc_struct *desc, u32 *base3, int seg); | |
195 | void (*set_segment)(struct x86_emulate_ctxt *ctxt, u16 selector, | |
196 | struct desc_struct *desc, u32 base3, int seg); | |
4bff1e86 AK |
197 | unsigned long (*get_cached_segment_base)(struct x86_emulate_ctxt *ctxt, |
198 | int seg); | |
199 | void (*get_gdt)(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt); | |
200 | void (*get_idt)(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt); | |
1ac9d0cf AK |
201 | void (*set_gdt)(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt); |
202 | void (*set_idt)(struct x86_emulate_ctxt *ctxt, struct desc_ptr *dt); | |
717746e3 AK |
203 | ulong (*get_cr)(struct x86_emulate_ctxt *ctxt, int cr); |
204 | int (*set_cr)(struct x86_emulate_ctxt *ctxt, int cr, ulong val); | |
205 | int (*cpl)(struct x86_emulate_ctxt *ctxt); | |
206 | int (*get_dr)(struct x86_emulate_ctxt *ctxt, int dr, ulong *dest); | |
207 | int (*set_dr)(struct x86_emulate_ctxt *ctxt, int dr, ulong value); | |
64d60670 PB |
208 | u64 (*get_smbase)(struct x86_emulate_ctxt *ctxt); |
209 | void (*set_smbase)(struct x86_emulate_ctxt *ctxt, u64 smbase); | |
717746e3 AK |
210 | int (*set_msr)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 data); |
211 | int (*get_msr)(struct x86_emulate_ctxt *ctxt, u32 msr_index, u64 *pdata); | |
67f4d428 | 212 | int (*check_pmc)(struct x86_emulate_ctxt *ctxt, u32 pmc); |
222d21aa | 213 | int (*read_pmc)(struct x86_emulate_ctxt *ctxt, u32 pmc, u64 *pdata); |
6c3287f7 | 214 | void (*halt)(struct x86_emulate_ctxt *ctxt); |
bcaf5cc5 | 215 | void (*wbinvd)(struct x86_emulate_ctxt *ctxt); |
d6aa1000 | 216 | int (*fix_hypercall)(struct x86_emulate_ctxt *ctxt); |
2953538e | 217 | int (*intercept)(struct x86_emulate_ctxt *ctxt, |
8a76d7f2 | 218 | struct x86_instruction_info *info, |
c4f035c6 | 219 | enum x86_intercept_stage stage); |
bdb42f5a | 220 | |
e911eb3b YZ |
221 | bool (*get_cpuid)(struct x86_emulate_ctxt *ctxt, u32 *eax, u32 *ebx, |
222 | u32 *ecx, u32 *edx, bool check_limit); | |
801806d9 | 223 | void (*set_nmi_mask)(struct x86_emulate_ctxt *ctxt, bool masked); |
6ed071f0 LP |
224 | |
225 | unsigned (*get_hflags)(struct x86_emulate_ctxt *ctxt); | |
226 | void (*set_hflags)(struct x86_emulate_ctxt *ctxt, unsigned hflags); | |
0234bf88 LP |
227 | int (*pre_leave_smm)(struct x86_emulate_ctxt *ctxt, u64 smbase); |
228 | ||
6aa8b732 AK |
229 | }; |
230 | ||
1253791d AK |
231 | typedef u32 __attribute__((vector_size(16))) sse128_t; |
232 | ||
e4e03ded LV |
233 | /* Type, address-of, and value of an instruction's operand. */ |
234 | struct operand { | |
b3356bf0 | 235 | enum { OP_REG, OP_MEM, OP_MEM_STR, OP_IMM, OP_XMM, OP_MM, OP_NONE } type; |
e4e03ded | 236 | unsigned int bytes; |
b3356bf0 | 237 | unsigned int count; |
16518d5a AK |
238 | union { |
239 | unsigned long orig_val; | |
240 | u64 orig_val64; | |
241 | }; | |
1a6440ae AK |
242 | union { |
243 | unsigned long *reg; | |
90de84f5 AK |
244 | struct segmented_address { |
245 | ulong ea; | |
246 | unsigned seg; | |
247 | } mem; | |
1253791d | 248 | unsigned xmm; |
cbe2c9d3 | 249 | unsigned mm; |
1a6440ae | 250 | } addr; |
414e6277 GN |
251 | union { |
252 | unsigned long val; | |
16518d5a | 253 | u64 val64; |
54cfdb3e | 254 | char valptr[sizeof(sse128_t)]; |
1253791d | 255 | sse128_t vec_val; |
cbe2c9d3 | 256 | u64 mm_val; |
b3356bf0 | 257 | void *data; |
414e6277 | 258 | }; |
e4e03ded LV |
259 | }; |
260 | ||
62266869 AK |
261 | struct fetch_cache { |
262 | u8 data[15]; | |
17052f16 PB |
263 | u8 *ptr; |
264 | u8 *end; | |
62266869 AK |
265 | }; |
266 | ||
7b262e90 GN |
267 | struct read_cache { |
268 | u8 data[1024]; | |
269 | unsigned long pos; | |
270 | unsigned long end; | |
271 | }; | |
272 | ||
9d1b39a9 GN |
273 | /* Execution mode, passed to the emulator. */ |
274 | enum x86emul_mode { | |
275 | X86EMUL_MODE_REAL, /* Real mode. */ | |
276 | X86EMUL_MODE_VM86, /* Virtual 8086 mode. */ | |
277 | X86EMUL_MODE_PROT16, /* 16-bit protected mode. */ | |
278 | X86EMUL_MODE_PROT32, /* 32-bit protected mode. */ | |
279 | X86EMUL_MODE_PROT64, /* 64-bit (long) mode. */ | |
280 | }; | |
281 | ||
a584539b PB |
282 | /* These match some of the HF_* flags defined in kvm_host.h */ |
283 | #define X86EMUL_GUEST_MASK (1 << 5) /* VCPU is in guest-mode */ | |
64d60670 PB |
284 | #define X86EMUL_SMM_MASK (1 << 6) |
285 | #define X86EMUL_SMM_INSIDE_NMI_MASK (1 << 7) | |
a584539b | 286 | |
9dac77fa | 287 | struct x86_emulate_ctxt { |
0225fb50 | 288 | const struct x86_emulate_ops *ops; |
9dac77fa AK |
289 | |
290 | /* Register state before/after emulation. */ | |
291 | unsigned long eflags; | |
292 | unsigned long eip; /* eip before instruction emulation */ | |
293 | /* Emulated execution mode, represented by an X86EMUL_MODE value. */ | |
9d1b39a9 | 294 | enum x86emul_mode mode; |
9dac77fa AK |
295 | |
296 | /* interruptibility state, as a result of execution of STI or MOV SS */ | |
297 | int interruptibility; | |
298 | ||
9dac77fa | 299 | bool perm_ok; /* do not check permissions if true */ |
b51e974f | 300 | bool ud; /* inject an #UD if host doesn't support insn */ |
c8401dda | 301 | bool tf; /* TF value before instruction (after for syscall/sysret) */ |
9dac77fa AK |
302 | |
303 | bool have_exception; | |
304 | struct x86_exception exception; | |
305 | ||
1ce19dc1 BP |
306 | /* |
307 | * decode cache | |
308 | */ | |
309 | ||
310 | /* current opcode length in bytes */ | |
311 | u8 opcode_len; | |
e4e03ded | 312 | u8 b; |
c4f035c6 | 313 | u8 intercept; |
e4e03ded LV |
314 | u8 op_bytes; |
315 | u8 ad_bytes; | |
316 | struct operand src; | |
0dc8d10f | 317 | struct operand src2; |
e4e03ded | 318 | struct operand dst; |
ef65c889 | 319 | int (*execute)(struct x86_emulate_ctxt *ctxt); |
d09beabd | 320 | int (*check_perm)(struct x86_emulate_ctxt *ctxt); |
41061cdb BD |
321 | /* |
322 | * The following six fields are cleared together, | |
323 | * the rest are initialized unconditionally in x86_decode_insn | |
324 | * or elsewhere | |
325 | */ | |
c44b4c6a BD |
326 | bool rip_relative; |
327 | u8 rex_prefix; | |
328 | u8 lock_prefix; | |
329 | u8 rep_prefix; | |
c44b4c6a BD |
330 | /* bitmaps of registers in _regs[] that can be read */ |
331 | u32 regs_valid; | |
332 | /* bitmaps of registers in _regs[] that have been written */ | |
333 | u32 regs_dirty; | |
e4e03ded LV |
334 | /* modrm */ |
335 | u8 modrm; | |
336 | u8 modrm_mod; | |
337 | u8 modrm_reg; | |
338 | u8 modrm_rm; | |
09ee57cd | 339 | u8 modrm_seg; |
573e80fe | 340 | u8 seg_override; |
c44b4c6a | 341 | u64 d; |
36dd9bb5 | 342 | unsigned long _eip; |
cbd27ee7 | 343 | struct operand memop; |
b5c9ff73 | 344 | /* Fields above regs are cleared together. */ |
dd856efa | 345 | unsigned long _regs[NR_VCPU_REGS]; |
f09ed83e | 346 | struct operand *memopp; |
62266869 | 347 | struct fetch_cache fetch; |
7b262e90 | 348 | struct read_cache io_read; |
9de41573 | 349 | struct read_cache mem_read; |
e4e03ded LV |
350 | }; |
351 | ||
90e0a28f | 352 | /* Repeat String Operation Prefix */ |
1d6b114f AK |
353 | #define REPE_PREFIX 0xf3 |
354 | #define REPNE_PREFIX 0xf2 | |
90e0a28f | 355 | |
c2226fc9 SB |
356 | /* CPUID vendors */ |
357 | #define X86EMUL_CPUID_VENDOR_AuthenticAMD_ebx 0x68747541 | |
358 | #define X86EMUL_CPUID_VENDOR_AuthenticAMD_ecx 0x444d4163 | |
359 | #define X86EMUL_CPUID_VENDOR_AuthenticAMD_edx 0x69746e65 | |
360 | ||
361 | #define X86EMUL_CPUID_VENDOR_AMDisbetterI_ebx 0x69444d41 | |
362 | #define X86EMUL_CPUID_VENDOR_AMDisbetterI_ecx 0x21726574 | |
363 | #define X86EMUL_CPUID_VENDOR_AMDisbetterI_edx 0x74656273 | |
364 | ||
365 | #define X86EMUL_CPUID_VENDOR_GenuineIntel_ebx 0x756e6547 | |
366 | #define X86EMUL_CPUID_VENDOR_GenuineIntel_ecx 0x6c65746e | |
367 | #define X86EMUL_CPUID_VENDOR_GenuineIntel_edx 0x49656e69 | |
368 | ||
c4f035c6 | 369 | enum x86_intercept_stage { |
40e19b51 | 370 | X86_ICTP_NONE = 0, /* Allow zero-init to not match anything */ |
c4f035c6 AK |
371 | X86_ICPT_PRE_EXCEPT, |
372 | X86_ICPT_POST_EXCEPT, | |
373 | X86_ICPT_POST_MEMACCESS, | |
374 | }; | |
375 | ||
376 | enum x86_intercept { | |
377 | x86_intercept_none, | |
cfec82cb JR |
378 | x86_intercept_cr_read, |
379 | x86_intercept_cr_write, | |
380 | x86_intercept_clts, | |
3c6e276f AK |
381 | x86_intercept_lmsw, |
382 | x86_intercept_smsw, | |
3b88e41a JR |
383 | x86_intercept_dr_read, |
384 | x86_intercept_dr_write, | |
3c6e276f AK |
385 | x86_intercept_lidt, |
386 | x86_intercept_sidt, | |
387 | x86_intercept_lgdt, | |
388 | x86_intercept_sgdt, | |
389 | x86_intercept_lldt, | |
390 | x86_intercept_sldt, | |
391 | x86_intercept_ltr, | |
392 | x86_intercept_str, | |
393 | x86_intercept_rdtsc, | |
394 | x86_intercept_rdpmc, | |
395 | x86_intercept_pushf, | |
396 | x86_intercept_popf, | |
397 | x86_intercept_cpuid, | |
398 | x86_intercept_rsm, | |
399 | x86_intercept_iret, | |
400 | x86_intercept_intn, | |
401 | x86_intercept_invd, | |
402 | x86_intercept_pause, | |
403 | x86_intercept_hlt, | |
404 | x86_intercept_invlpg, | |
405 | x86_intercept_invlpga, | |
406 | x86_intercept_vmrun, | |
407 | x86_intercept_vmload, | |
408 | x86_intercept_vmsave, | |
409 | x86_intercept_vmmcall, | |
410 | x86_intercept_stgi, | |
411 | x86_intercept_clgi, | |
412 | x86_intercept_skinit, | |
413 | x86_intercept_rdtscp, | |
414 | x86_intercept_icebp, | |
415 | x86_intercept_wbinvd, | |
416 | x86_intercept_monitor, | |
417 | x86_intercept_mwait, | |
8061252e JR |
418 | x86_intercept_rdmsr, |
419 | x86_intercept_wrmsr, | |
f6511935 JR |
420 | x86_intercept_in, |
421 | x86_intercept_ins, | |
422 | x86_intercept_out, | |
423 | x86_intercept_outs, | |
c4f035c6 AK |
424 | |
425 | nr_x86_intercepts | |
426 | }; | |
427 | ||
6aa8b732 | 428 | /* Host execution mode. */ |
d73fa29a | 429 | #if defined(CONFIG_X86_32) |
6aa8b732 | 430 | #define X86EMUL_MODE_HOST X86EMUL_MODE_PROT32 |
05b3e0c2 | 431 | #elif defined(CONFIG_X86_64) |
6aa8b732 AK |
432 | #define X86EMUL_MODE_HOST X86EMUL_MODE_PROT64 |
433 | #endif | |
434 | ||
dc25e89e | 435 | int x86_decode_insn(struct x86_emulate_ctxt *ctxt, void *insn, int insn_len); |
1cb3f3ae | 436 | bool x86_page_table_writing_insn(struct x86_emulate_ctxt *ctxt); |
d2ddd1c4 GN |
437 | #define EMULATION_FAILED -1 |
438 | #define EMULATION_OK 0 | |
439 | #define EMULATION_RESTART 1 | |
775fde86 | 440 | #define EMULATION_INTERCEPTED 2 |
1498507a | 441 | void init_decode_cache(struct x86_emulate_ctxt *ctxt); |
9aabc88f | 442 | int x86_emulate_insn(struct x86_emulate_ctxt *ctxt); |
38ba30ba | 443 | int emulator_task_switch(struct x86_emulate_ctxt *ctxt, |
7f3d35fd | 444 | u16 tss_selector, int idt_index, int reason, |
e269fb21 | 445 | bool has_error_code, u32 error_code); |
7b105ca2 | 446 | int emulate_int_real(struct x86_emulate_ctxt *ctxt, int irq); |
dd856efa AK |
447 | void emulator_invalidate_register_cache(struct x86_emulate_ctxt *ctxt); |
448 | void emulator_writeback_register_cache(struct x86_emulate_ctxt *ctxt); | |
0f89b207 | 449 | bool emulator_can_use_gpa(struct x86_emulate_ctxt *ctxt); |
dd856efa | 450 | |
1965aae3 | 451 | #endif /* _ASM_X86_KVM_X86_EMULATE_H */ |