target-i386/cpu.h

   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 #ifndef CPU_I386_H
  20 #define CPU_I386_H
  21
  22 #include "config.h"
  23
  24 #ifdef TARGET_X86_64
  25 #define TARGET_LONG_BITS 64
  26 #else
  27 #define TARGET_LONG_BITS 32
  28 #endif
  29
  30 /* target supports implicit self modifying code */
  31 #define TARGET_HAS_SMC
  32 /* support for self modifying code even if the modified instruction is
  33    close to the modifying instruction */
  34 #define TARGET_HAS_PRECISE_SMC
  35
  36 #define TARGET_HAS_ICE 1
  37
  38 #ifdef TARGET_X86_64
  39 #define ELF_MACHINE     EM_X86_64
  40 #else
  41 #define ELF_MACHINE     EM_386
  42 #endif
  43
  44 #define CPUState struct CPUX86State
  45
  46 #include "cpu-defs.h"
  47
  48 #include "softfloat.h"
  49
  50 #define R_EAX 0
  51 #define R_ECX 1
  52 #define R_EDX 2
  53 #define R_EBX 3
  54 #define R_ESP 4
  55 #define R_EBP 5
  56 #define R_ESI 6
  57 #define R_EDI 7
  58
  59 #define R_AL 0
  60 #define R_CL 1
  61 #define R_DL 2
  62 #define R_BL 3
  63 #define R_AH 4
  64 #define R_CH 5
  65 #define R_DH 6
  66 #define R_BH 7
  67
  68 #define R_ES 0
  69 #define R_CS 1
  70 #define R_SS 2
  71 #define R_DS 3
  72 #define R_FS 4
  73 #define R_GS 5
  74
  75 /* segment descriptor fields */
  76 #define DESC_G_MASK     (1 << 23)
  77 #define DESC_B_SHIFT    22
  78 #define DESC_B_MASK     (1 << DESC_B_SHIFT)
  79 #define DESC_L_SHIFT    21 /* x86_64 only : 64 bit code segment */
  80 #define DESC_L_MASK     (1 << DESC_L_SHIFT)
  81 #define DESC_AVL_MASK   (1 << 20)
  82 #define DESC_P_MASK     (1 << 15)
  83 #define DESC_DPL_SHIFT  13
  84 #define DESC_DPL_MASK   (3 << DESC_DPL_SHIFT)
  85 #define DESC_S_MASK     (1 << 12)
  86 #define DESC_TYPE_SHIFT 8
  87 #define DESC_TYPE_MASK  (15 << DESC_TYPE_SHIFT)
  88 #define DESC_A_MASK     (1 << 8)
  89
  90 #define DESC_CS_MASK    (1 << 11) /* 1=code segment 0=data segment */
  91 #define DESC_C_MASK     (1 << 10) /* code: conforming */
  92 #define DESC_R_MASK     (1 << 9)  /* code: readable */
  93
  94 #define DESC_E_MASK     (1 << 10) /* data: expansion direction */
  95 #define DESC_W_MASK     (1 << 9)  /* data: writable */
  96
  97 #define DESC_TSS_BUSY_MASK (1 << 9)
  98
  99 /* eflags masks */
 100 #define CC_C    0x0001
 101 #define CC_P    0x0004
 102 #define CC_A    0x0010
 103 #define CC_Z    0x0040
 104 #define CC_S    0x0080
 105 #define CC_O    0x0800
 106
 107 #define TF_SHIFT   8
 108 #define IOPL_SHIFT 12
 109 #define VM_SHIFT   17
 110
 111 #define TF_MASK                 0x00000100
 112 #define IF_MASK                 0x00000200
 113 #define DF_MASK                 0x00000400
 114 #define IOPL_MASK               0x00003000
 115 #define NT_MASK                 0x00004000
 116 #define RF_MASK                 0x00010000
 117 #define VM_MASK                 0x00020000
 118 #define AC_MASK                 0x00040000
 119 #define VIF_MASK                0x00080000
 120 #define VIP_MASK                0x00100000
 121 #define ID_MASK                 0x00200000
 122
 123 /* hidden flags - used internally by qemu to represent additional cpu
 124    states. Only the CPL, INHIBIT_IRQ, SMM and SVMI are not
 125    redundant. We avoid using the IOPL_MASK, TF_MASK and VM_MASK bit
 126    position to ease oring with eflags. */
 127 /* current cpl */
 128 #define HF_CPL_SHIFT         0
 129 /* true if soft mmu is being used */
 130 #define HF_SOFTMMU_SHIFT     2
 131 /* true if hardware interrupts must be disabled for next instruction */
 132 #define HF_INHIBIT_IRQ_SHIFT 3
 133 /* 16 or 32 segments */
 134 #define HF_CS32_SHIFT        4
 135 #define HF_SS32_SHIFT        5
 136 /* zero base for DS, ES and SS : can be '0' only in 32 bit CS segment */
 137 #define HF_ADDSEG_SHIFT      6
 138 /* copy of CR0.PE (protected mode) */
 139 #define HF_PE_SHIFT          7
 140 #define HF_TF_SHIFT          8 /* must be same as eflags */
 141 #define HF_MP_SHIFT          9 /* the order must be MP, EM, TS */
 142 #define HF_EM_SHIFT         10
 143 #define HF_TS_SHIFT         11
 144 #define HF_IOPL_SHIFT       12 /* must be same as eflags */
 145 #define HF_LMA_SHIFT        14 /* only used on x86_64: long mode active */
 146 #define HF_CS64_SHIFT       15 /* only used on x86_64: 64 bit code segment  */
 147 #define HF_RF_SHIFT         16 /* must be same as eflags */
 148 #define HF_VM_SHIFT         17 /* must be same as eflags */
 149 #define HF_SMM_SHIFT        19 /* CPU in SMM mode */
 150 #define HF_SVME_SHIFT       20 /* SVME enabled (copy of EFER.SVME) */
 151 #define HF_SVMI_SHIFT       21 /* SVM intercepts are active */
 152 #define HF_OSFXSR_SHIFT     22 /* CR4.OSFXSR */
 153
 154 #define HF_CPL_MASK          (3 << HF_CPL_SHIFT)
 155 #define HF_SOFTMMU_MASK      (1 << HF_SOFTMMU_SHIFT)
 156 #define HF_INHIBIT_IRQ_MASK  (1 << HF_INHIBIT_IRQ_SHIFT)
 157 #define HF_CS32_MASK         (1 << HF_CS32_SHIFT)
 158 #define HF_SS32_MASK         (1 << HF_SS32_SHIFT)
 159 #define HF_ADDSEG_MASK       (1 << HF_ADDSEG_SHIFT)
 160 #define HF_PE_MASK           (1 << HF_PE_SHIFT)
 161 #define HF_TF_MASK           (1 << HF_TF_SHIFT)
 162 #define HF_MP_MASK           (1 << HF_MP_SHIFT)
 163 #define HF_EM_MASK           (1 << HF_EM_SHIFT)
 164 #define HF_TS_MASK           (1 << HF_TS_SHIFT)
 165 #define HF_IOPL_MASK         (3 << HF_IOPL_SHIFT)
 166 #define HF_LMA_MASK          (1 << HF_LMA_SHIFT)
 167 #define HF_CS64_MASK         (1 << HF_CS64_SHIFT)
 168 #define HF_RF_MASK           (1 << HF_RF_SHIFT)
 169 #define HF_VM_MASK           (1 << HF_VM_SHIFT)
 170 #define HF_SMM_MASK          (1 << HF_SMM_SHIFT)
 171 #define HF_SVME_MASK         (1 << HF_SVME_SHIFT)
 172 #define HF_SVMI_MASK         (1 << HF_SVMI_SHIFT)
 173 #define HF_OSFXSR_MASK       (1 << HF_OSFXSR_SHIFT)
 174
 175 /* hflags2 */
 176
 177 #define HF2_GIF_SHIFT        0 /* if set CPU takes interrupts */
 178 #define HF2_HIF_SHIFT        1 /* value of IF_MASK when entering SVM */
 179 #define HF2_NMI_SHIFT        2 /* CPU serving NMI */
 180 #define HF2_VINTR_SHIFT      3 /* value of V_INTR_MASKING bit */
 181
 182 #define HF2_GIF_MASK          (1 << HF2_GIF_SHIFT)
 183 #define HF2_HIF_MASK          (1 << HF2_HIF_SHIFT)
 184 #define HF2_NMI_MASK          (1 << HF2_NMI_SHIFT)
 185 #define HF2_VINTR_MASK        (1 << HF2_VINTR_SHIFT)
 186
 187 #define CR0_PE_SHIFT 0
 188 #define CR0_MP_SHIFT 1
 189
 190 #define CR0_PE_MASK  (1 << 0)
 191 #define CR0_MP_MASK  (1 << 1)
 192 #define CR0_EM_MASK  (1 << 2)
 193 #define CR0_TS_MASK  (1 << 3)
 194 #define CR0_ET_MASK  (1 << 4)
 195 #define CR0_NE_MASK  (1 << 5)
 196 #define CR0_WP_MASK  (1 << 16)
 197 #define CR0_AM_MASK  (1 << 18)
 198 #define CR0_PG_MASK  (1 << 31)
 199
 200 #define CR4_VME_MASK  (1 << 0)
 201 #define CR4_PVI_MASK  (1 << 1)
 202 #define CR4_TSD_MASK  (1 << 2)
 203 #define CR4_DE_MASK   (1 << 3)
 204 #define CR4_PSE_MASK  (1 << 4)
 205 #define CR4_PAE_MASK  (1 << 5)
 206 #define CR4_MCE_MASK  (1 << 6)
 207 #define CR4_PGE_MASK  (1 << 7)
 208 #define CR4_PCE_MASK  (1 << 8)
 209 #define CR4_OSFXSR_SHIFT 9
 210 #define CR4_OSFXSR_MASK (1 << CR4_OSFXSR_SHIFT)
 211 #define CR4_OSXMMEXCPT_MASK  (1 << 10)
 212
 213 #define DR6_BD          (1 << 13)
 214 #define DR6_BS          (1 << 14)
 215 #define DR6_BT          (1 << 15)
 216 #define DR6_FIXED_1     0xffff0ff0
 217
 218 #define DR7_GD          (1 << 13)
 219 #define DR7_TYPE_SHIFT  16
 220 #define DR7_LEN_SHIFT   18
 221 #define DR7_FIXED_1     0x00000400
 222
 223 #define PG_PRESENT_BIT  0
 224 #define PG_RW_BIT       1
 225 #define PG_USER_BIT     2
 226 #define PG_PWT_BIT      3
 227 #define PG_PCD_BIT      4
 228 #define PG_ACCESSED_BIT 5
 229 #define PG_DIRTY_BIT    6
 230 #define PG_PSE_BIT      7
 231 #define PG_GLOBAL_BIT   8
 232 #define PG_NX_BIT       63
 233
 234 #define PG_PRESENT_MASK  (1 << PG_PRESENT_BIT)
 235 #define PG_RW_MASK       (1 << PG_RW_BIT)
 236 #define PG_USER_MASK     (1 << PG_USER_BIT)
 237 #define PG_PWT_MASK      (1 << PG_PWT_BIT)
 238 #define PG_PCD_MASK      (1 << PG_PCD_BIT)
 239 #define PG_ACCESSED_MASK (1 << PG_ACCESSED_BIT)
 240 #define PG_DIRTY_MASK    (1 << PG_DIRTY_BIT)
 241 #define PG_PSE_MASK      (1 << PG_PSE_BIT)
 242 #define PG_GLOBAL_MASK   (1 << PG_GLOBAL_BIT)
 243 #define PG_NX_MASK       (1LL << PG_NX_BIT)
 244
 245 #define PG_ERROR_W_BIT     1
 246
 247 #define PG_ERROR_P_MASK    0x01
 248 #define PG_ERROR_W_MASK    (1 << PG_ERROR_W_BIT)
 249 #define PG_ERROR_U_MASK    0x04
 250 #define PG_ERROR_RSVD_MASK 0x08
 251 #define PG_ERROR_I_D_MASK  0x10
 252
 253 #define MCG_CTL_P       (1UL<<8)   /* MCG_CAP register available */
 254
 255 #define MCE_CAP_DEF     MCG_CTL_P
 256 #define MCE_BANKS_DEF   10
 257
 258 #define MCG_STATUS_MCIP (1ULL<<2)   /* machine check in progress */
 259
 260 #define MCI_STATUS_VAL  (1ULL<<63)  /* valid error */
 261 #define MCI_STATUS_OVER (1ULL<<62)  /* previous errors lost */
 262 #define MCI_STATUS_UC   (1ULL<<61)  /* uncorrected error */
 263
 264 #define MSR_IA32_TSC                    0x10
 265 #define MSR_IA32_APICBASE               0x1b
 266 #define MSR_IA32_APICBASE_BSP           (1<<8)
 267 #define MSR_IA32_APICBASE_ENABLE        (1<<11)
 268 #define MSR_IA32_APICBASE_BASE          (0xfffff<<12)
 269
 270 #define MSR_MTRRcap                     0xfe
 271 #define MSR_MTRRcap_VCNT                8
 272 #define MSR_MTRRcap_FIXRANGE_SUPPORT    (1 << 8)
 273 #define MSR_MTRRcap_WC_SUPPORTED        (1 << 10)
 274
 275 #define MSR_IA32_SYSENTER_CS            0x174
 276 #define MSR_IA32_SYSENTER_ESP           0x175
 277 #define MSR_IA32_SYSENTER_EIP           0x176
 278
 279 #define MSR_MCG_CAP                     0x179
 280 #define MSR_MCG_STATUS                  0x17a
 281 #define MSR_MCG_CTL                     0x17b
 282
 283 #define MSR_IA32_PERF_STATUS            0x198
 284
 285 #define MSR_MTRRphysBase(reg)           (0x200 + 2 * (reg))
 286 #define MSR_MTRRphysMask(reg)           (0x200 + 2 * (reg) + 1)
 287
 288 #define MSR_MTRRfix64K_00000            0x250
 289 #define MSR_MTRRfix16K_80000            0x258
 290 #define MSR_MTRRfix16K_A0000            0x259
 291 #define MSR_MTRRfix4K_C0000             0x268
 292 #define MSR_MTRRfix4K_C8000             0x269
 293 #define MSR_MTRRfix4K_D0000             0x26a
 294 #define MSR_MTRRfix4K_D8000             0x26b
 295 #define MSR_MTRRfix4K_E0000             0x26c
 296 #define MSR_MTRRfix4K_E8000             0x26d
 297 #define MSR_MTRRfix4K_F0000             0x26e
 298 #define MSR_MTRRfix4K_F8000             0x26f
 299
 300 #define MSR_PAT                         0x277
 301
 302 #define MSR_MTRRdefType                 0x2ff
 303
 304 #define MSR_MC0_CTL                     0x400
 305 #define MSR_MC0_STATUS                  0x401
 306 #define MSR_MC0_ADDR                    0x402
 307 #define MSR_MC0_MISC                    0x403
 308
 309 #define MSR_EFER                        0xc0000080
 310
 311 #define MSR_EFER_SCE   (1 << 0)
 312 #define MSR_EFER_LME   (1 << 8)
 313 #define MSR_EFER_LMA   (1 << 10)
 314 #define MSR_EFER_NXE   (1 << 11)
 315 #define MSR_EFER_SVME  (1 << 12)
 316 #define MSR_EFER_FFXSR (1 << 14)
 317
 318 #define MSR_STAR                        0xc0000081
 319 #define MSR_LSTAR                       0xc0000082
 320 #define MSR_CSTAR                       0xc0000083
 321 #define MSR_FMASK                       0xc0000084
 322 #define MSR_FSBASE                      0xc0000100
 323 #define MSR_GSBASE                      0xc0000101
 324 #define MSR_KERNELGSBASE                0xc0000102
 325
 326 #define MSR_VM_HSAVE_PA                 0xc0010117
 327
 328 /* cpuid_features bits */
 329 #define CPUID_FP87 (1 << 0)
 330 #define CPUID_VME  (1 << 1)
 331 #define CPUID_DE   (1 << 2)
 332 #define CPUID_PSE  (1 << 3)
 333 #define CPUID_TSC  (1 << 4)
 334 #define CPUID_MSR  (1 << 5)
 335 #define CPUID_PAE  (1 << 6)
 336 #define CPUID_MCE  (1 << 7)
 337 #define CPUID_CX8  (1 << 8)
 338 #define CPUID_APIC (1 << 9)
 339 #define CPUID_SEP  (1 << 11) /* sysenter/sysexit */
 340 #define CPUID_MTRR (1 << 12)
 341 #define CPUID_PGE  (1 << 13)
 342 #define CPUID_MCA  (1 << 14)
 343 #define CPUID_CMOV (1 << 15)
 344 #define CPUID_PAT  (1 << 16)
 345 #define CPUID_PSE36   (1 << 17)
 346 #define CPUID_PN   (1 << 18)
 347 #define CPUID_CLFLUSH (1 << 19)
 348 #define CPUID_DTS (1 << 21)
 349 #define CPUID_ACPI (1 << 22)
 350 #define CPUID_MMX  (1 << 23)
 351 #define CPUID_FXSR (1 << 24)
 352 #define CPUID_SSE  (1 << 25)
 353 #define CPUID_SSE2 (1 << 26)
 354 #define CPUID_SS (1 << 27)
 355 #define CPUID_HT (1 << 28)
 356 #define CPUID_TM (1 << 29)
 357 #define CPUID_IA64 (1 << 30)
 358 #define CPUID_PBE (1 << 31)
 359
 360 #define CPUID_EXT_SSE3     (1 << 0)
 361 #define CPUID_EXT_DTES64   (1 << 2)
 362 #define CPUID_EXT_MONITOR  (1 << 3)
 363 #define CPUID_EXT_DSCPL    (1 << 4)
 364 #define CPUID_EXT_VMX      (1 << 5)
 365 #define CPUID_EXT_SMX      (1 << 6)
 366 #define CPUID_EXT_EST      (1 << 7)
 367 #define CPUID_EXT_TM2      (1 << 8)
 368 #define CPUID_EXT_SSSE3    (1 << 9)
 369 #define CPUID_EXT_CID      (1 << 10)
 370 #define CPUID_EXT_CX16     (1 << 13)
 371 #define CPUID_EXT_XTPR     (1 << 14)
 372 #define CPUID_EXT_PDCM     (1 << 15)
 373 #define CPUID_EXT_DCA      (1 << 18)
 374 #define CPUID_EXT_SSE41    (1 << 19)
 375 #define CPUID_EXT_SSE42    (1 << 20)
 376 #define CPUID_EXT_X2APIC   (1 << 21)
 377 #define CPUID_EXT_MOVBE    (1 << 22)
 378 #define CPUID_EXT_POPCNT   (1 << 23)
 379 #define CPUID_EXT_XSAVE    (1 << 26)
 380 #define CPUID_EXT_OSXSAVE  (1 << 27)
 381 #define CPUID_EXT_HYPERVISOR  (1 << 31)
 382
 383 #define CPUID_EXT2_SYSCALL (1 << 11)
 384 #define CPUID_EXT2_MP      (1 << 19)
 385 #define CPUID_EXT2_NX      (1 << 20)
 386 #define CPUID_EXT2_MMXEXT  (1 << 22)
 387 #define CPUID_EXT2_FFXSR   (1 << 25)
 388 #define CPUID_EXT2_PDPE1GB (1 << 26)
 389 #define CPUID_EXT2_RDTSCP  (1 << 27)
 390 #define CPUID_EXT2_LM      (1 << 29)
 391 #define CPUID_EXT2_3DNOWEXT (1 << 30)
 392 #define CPUID_EXT2_3DNOW   (1 << 31)
 393
 394 #define CPUID_EXT3_LAHF_LM (1 << 0)
 395 #define CPUID_EXT3_CMP_LEG (1 << 1)
 396 #define CPUID_EXT3_SVM     (1 << 2)
 397 #define CPUID_EXT3_EXTAPIC (1 << 3)
 398 #define CPUID_EXT3_CR8LEG  (1 << 4)
 399 #define CPUID_EXT3_ABM     (1 << 5)
 400 #define CPUID_EXT3_SSE4A   (1 << 6)
 401 #define CPUID_EXT3_MISALIGNSSE (1 << 7)
 402 #define CPUID_EXT3_3DNOWPREFETCH (1 << 8)
 403 #define CPUID_EXT3_OSVW    (1 << 9)
 404 #define CPUID_EXT3_IBS     (1 << 10)
 405 #define CPUID_EXT3_SKINIT  (1 << 12)
 406
 407 #define CPUID_VENDOR_INTEL_1 0x756e6547 /* "Genu" */
 408 #define CPUID_VENDOR_INTEL_2 0x49656e69 /* "ineI" */
 409 #define CPUID_VENDOR_INTEL_3 0x6c65746e /* "ntel" */
 410
 411 #define CPUID_VENDOR_AMD_1   0x68747541 /* "Auth" */
 412 #define CPUID_VENDOR_AMD_2   0x69746e65 /* "enti" */
 413 #define CPUID_VENDOR_AMD_3   0x444d4163 /* "cAMD" */
 414
 415 #define CPUID_MWAIT_IBE     (1 << 1) /* Interrupts can exit capability */
 416 #define CPUID_MWAIT_EMX     (1 << 0) /* enumeration supported */
 417
 418 #define EXCP00_DIVZ     0
 419 #define EXCP01_DB       1
 420 #define EXCP02_NMI      2
 421 #define EXCP03_INT3     3
 422 #define EXCP04_INTO     4
 423 #define EXCP05_BOUND    5
 424 #define EXCP06_ILLOP    6
 425 #define EXCP07_PREX     7
 426 #define EXCP08_DBLE     8
 427 #define EXCP09_XERR     9
 428 #define EXCP0A_TSS      10
 429 #define EXCP0B_NOSEG    11
 430 #define EXCP0C_STACK    12
 431 #define EXCP0D_GPF      13
 432 #define EXCP0E_PAGE     14
 433 #define EXCP10_COPR     16
 434 #define EXCP11_ALGN     17
 435 #define EXCP12_MCHK     18
 436
 437 #define EXCP_SYSCALL    0x100 /* only happens in user only emulation
 438                                  for syscall instruction */
 439
 440 enum {
 441     CC_OP_DYNAMIC, /* must use dynamic code to get cc_op */
 442     CC_OP_EFLAGS,  /* all cc are explicitly computed, CC_SRC = flags */
 443
 444     CC_OP_MULB, /* modify all flags, C, O = (CC_SRC != 0) */
 445     CC_OP_MULW,
 446     CC_OP_MULL,
 447     CC_OP_MULQ,
 448
 449     CC_OP_ADDB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
 450     CC_OP_ADDW,
 451     CC_OP_ADDL,
 452     CC_OP_ADDQ,
 453
 454     CC_OP_ADCB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
 455     CC_OP_ADCW,
 456     CC_OP_ADCL,
 457     CC_OP_ADCQ,
 458
 459     CC_OP_SUBB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
 460     CC_OP_SUBW,
 461     CC_OP_SUBL,
 462     CC_OP_SUBQ,
 463
 464     CC_OP_SBBB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
 465     CC_OP_SBBW,
 466     CC_OP_SBBL,
 467     CC_OP_SBBQ,
 468
 469     CC_OP_LOGICB, /* modify all flags, CC_DST = res */
 470     CC_OP_LOGICW,
 471     CC_OP_LOGICL,
 472     CC_OP_LOGICQ,
 473
 474     CC_OP_INCB, /* modify all flags except, CC_DST = res, CC_SRC = C */
 475     CC_OP_INCW,
 476     CC_OP_INCL,
 477     CC_OP_INCQ,
 478
 479     CC_OP_DECB, /* modify all flags except, CC_DST = res, CC_SRC = C  */
 480     CC_OP_DECW,
 481     CC_OP_DECL,
 482     CC_OP_DECQ,
 483
 484     CC_OP_SHLB, /* modify all flags, CC_DST = res, CC_SRC.msb = C */
 485     CC_OP_SHLW,
 486     CC_OP_SHLL,
 487     CC_OP_SHLQ,
 488
 489     CC_OP_SARB, /* modify all flags, CC_DST = res, CC_SRC.lsb = C */
 490     CC_OP_SARW,
 491     CC_OP_SARL,
 492     CC_OP_SARQ,
 493
 494     CC_OP_NB,
 495 };
 496
 497 #ifdef FLOATX80
 498 #define USE_X86LDOUBLE
 499 #endif
 500
 501 #ifdef USE_X86LDOUBLE
 502 typedef floatx80 CPU86_LDouble;
 503 #else
 504 typedef float64 CPU86_LDouble;
 505 #endif
 506
 507 typedef struct SegmentCache {
 508     uint32_t selector;
 509     target_ulong base;
 510     uint32_t limit;
 511     uint32_t flags;
 512 } SegmentCache;
 513
 514 typedef union {
 515     uint8_t _b[16];
 516     uint16_t _w[8];
 517     uint32_t _l[4];
 518     uint64_t _q[2];
 519     float32 _s[4];
 520     float64 _d[2];
 521 } XMMReg;
 522
 523 typedef union {
 524     uint8_t _b[8];
 525     uint16_t _w[4];
 526     uint32_t _l[2];
 527     float32 _s[2];
 528     uint64_t q;
 529 } MMXReg;
 530
 531 #ifdef WORDS_BIGENDIAN
 532 #define XMM_B(n) _b[15 - (n)]
 533 #define XMM_W(n) _w[7 - (n)]
 534 #define XMM_L(n) _l[3 - (n)]
 535 #define XMM_S(n) _s[3 - (n)]
 536 #define XMM_Q(n) _q[1 - (n)]
 537 #define XMM_D(n) _d[1 - (n)]
 538
 539 #define MMX_B(n) _b[7 - (n)]
 540 #define MMX_W(n) _w[3 - (n)]
 541 #define MMX_L(n) _l[1 - (n)]
 542 #define MMX_S(n) _s[1 - (n)]
 543 #else
 544 #define XMM_B(n) _b[n]
 545 #define XMM_W(n) _w[n]
 546 #define XMM_L(n) _l[n]
 547 #define XMM_S(n) _s[n]
 548 #define XMM_Q(n) _q[n]
 549 #define XMM_D(n) _d[n]
 550
 551 #define MMX_B(n) _b[n]
 552 #define MMX_W(n) _w[n]
 553 #define MMX_L(n) _l[n]
 554 #define MMX_S(n) _s[n]
 555 #endif
 556 #define MMX_Q(n) q
 557
 558 #ifdef TARGET_X86_64
 559 #define CPU_NB_REGS 16
 560 #else
 561 #define CPU_NB_REGS 8
 562 #endif
 563
 564 #define NB_MMU_MODES 2
 565
 566 typedef struct CPUX86State {
 567     /* standard registers */
 568     target_ulong regs[CPU_NB_REGS];
 569     target_ulong eip;
 570     target_ulong eflags; /* eflags register. During CPU emulation, CC
 571                         flags and DF are set to zero because they are
 572                         stored elsewhere */
 573
 574     /* emulator internal eflags handling */
 575     target_ulong cc_src;
 576     target_ulong cc_dst;
 577     uint32_t cc_op;
 578     int32_t df; /* D flag : 1 if D = 0, -1 if D = 1 */
 579     uint32_t hflags; /* TB flags, see HF_xxx constants. These flags
 580                         are known at translation time. */
 581     uint32_t hflags2; /* various other flags, see HF2_xxx constants. */
 582
 583     /* segments */
 584     SegmentCache segs[6]; /* selector values */
 585     SegmentCache ldt;
 586     SegmentCache tr;
 587     SegmentCache gdt; /* only base and limit are used */
 588     SegmentCache idt; /* only base and limit are used */
 589
 590     target_ulong cr[5]; /* NOTE: cr1 is unused */
 591     uint64_t a20_mask;
 592
 593     /* FPU state */
 594     unsigned int fpstt; /* top of stack index */
 595     unsigned int fpus;
 596     unsigned int fpuc;
 597     uint8_t fptags[8];   /* 0 = valid, 1 = empty */
 598     union {
 599 #ifdef USE_X86LDOUBLE
 600         CPU86_LDouble d __attribute__((aligned(16)));
 601 #else
 602         CPU86_LDouble d;
 603 #endif
 604         MMXReg mmx;
 605     } fpregs[8];
 606
 607     /* emulator internal variables */
 608     float_status fp_status;
 609     CPU86_LDouble ft0;
 610
 611     float_status mmx_status; /* for 3DNow! float ops */
 612     float_status sse_status;
 613     uint32_t mxcsr;
 614     XMMReg xmm_regs[CPU_NB_REGS];
 615     XMMReg xmm_t0;
 616     MMXReg mmx_t0;
 617     target_ulong cc_tmp; /* temporary for rcr/rcl */
 618
 619     /* sysenter registers */
 620     uint32_t sysenter_cs;
 621     target_ulong sysenter_esp;
 622     target_ulong sysenter_eip;
 623     uint64_t efer;
 624     uint64_t star;
 625
 626     uint64_t vm_hsave;
 627     uint64_t vm_vmcb;
 628     uint64_t tsc_offset;
 629     uint64_t intercept;
 630     uint16_t intercept_cr_read;
 631     uint16_t intercept_cr_write;
 632     uint16_t intercept_dr_read;
 633     uint16_t intercept_dr_write;
 634     uint32_t intercept_exceptions;
 635     uint8_t v_tpr;
 636
 637 #ifdef TARGET_X86_64
 638     target_ulong lstar;
 639     target_ulong cstar;
 640     target_ulong fmask;
 641     target_ulong kernelgsbase;
 642 #endif
 643
 644     uint64_t tsc;
 645
 646     uint64_t pat;
 647
 648     /* exception/interrupt handling */
 649     int error_code;
 650     int exception_is_int;
 651     target_ulong exception_next_eip;
 652     target_ulong dr[8]; /* debug registers */
 653     union {
 654         CPUBreakpoint *cpu_breakpoint[4];
 655         CPUWatchpoint *cpu_watchpoint[4];
 656     }; /* break/watchpoints for dr[0..3] */
 657     uint32_t smbase;
 658     int old_exception;  /* exception in flight */
 659
 660     CPU_COMMON
 661
 662     /* processor features (e.g. for CPUID insn) */
 663     uint32_t cpuid_level;
 664     uint32_t cpuid_vendor1;
 665     uint32_t cpuid_vendor2;
 666     uint32_t cpuid_vendor3;
 667     uint32_t cpuid_version;
 668     uint32_t cpuid_features;
 669     uint32_t cpuid_ext_features;
 670     uint32_t cpuid_xlevel;
 671     uint32_t cpuid_model[12];
 672     uint32_t cpuid_ext2_features;
 673     uint32_t cpuid_ext3_features;
 674     uint32_t cpuid_apic_id;
 675     int cpuid_vendor_override;
 676
 677     /* MTRRs */
 678     uint64_t mtrr_fixed[11];
 679     uint64_t mtrr_deftype;
 680     struct {
 681         uint64_t base;
 682         uint64_t mask;
 683     } mtrr_var[8];
 684
 685 #ifdef CONFIG_KQEMU
 686     int kqemu_enabled;
 687     int last_io_time;
 688 #endif
 689
 690     /* For KVM */
 691     uint64_t interrupt_bitmap[256 / 64];
 692     uint32_t mp_state;
 693
 694     /* in order to simplify APIC support, we leave this pointer to the
 695        user */
 696     struct APICState *apic_state;
 697
 698     uint64 mcg_cap;
 699     uint64 mcg_status;
 700     uint64 mcg_ctl;
 701     uint64 *mce_banks;
 702 } CPUX86State;
 703
 704 CPUX86State *cpu_x86_init(const char *cpu_model);
 705 int cpu_x86_exec(CPUX86State *s);
 706 void cpu_x86_close(CPUX86State *s);
 707 void x86_cpu_list (FILE *f, int (*cpu_fprintf)(FILE *f, const char *fmt,
 708                                                  ...));
 709 int cpu_get_pic_interrupt(CPUX86State *s);
 710 /* MSDOS compatibility mode FPU exception support */
 711 void cpu_set_ferr(CPUX86State *s);
 712
 713 /* this function must always be used to load data in the segment
 714    cache: it synchronizes the hflags with the segment cache values */
 715 static inline void cpu_x86_load_seg_cache(CPUX86State *env,
 716                                           int seg_reg, unsigned int selector,
 717                                           target_ulong base,
 718                                           unsigned int limit,
 719                                           unsigned int flags)
 720 {
 721     SegmentCache *sc;
 722     unsigned int new_hflags;
 723
 724     sc = &env->segs[seg_reg];
 725     sc->selector = selector;
 726     sc->base = base;
 727     sc->limit = limit;
 728     sc->flags = flags;
 729
 730     /* update the hidden flags */
 731     {
 732         if (seg_reg == R_CS) {
 733 #ifdef TARGET_X86_64
 734             if ((env->hflags & HF_LMA_MASK) && (flags & DESC_L_MASK)) {
 735                 /* long mode */
 736                 env->hflags |= HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK;
 737                 env->hflags &= ~(HF_ADDSEG_MASK);
 738             } else
 739 #endif
 740             {
 741                 /* legacy / compatibility case */
 742                 new_hflags = (env->segs[R_CS].flags & DESC_B_MASK)
 743                     >> (DESC_B_SHIFT - HF_CS32_SHIFT);
 744                 env->hflags = (env->hflags & ~(HF_CS32_MASK | HF_CS64_MASK)) |
 745                     new_hflags;
 746             }
 747         }
 748         new_hflags = (env->segs[R_SS].flags & DESC_B_MASK)
 749             >> (DESC_B_SHIFT - HF_SS32_SHIFT);
 750         if (env->hflags & HF_CS64_MASK) {
 751             /* zero base assumed for DS, ES and SS in long mode */
 752         } else if (!(env->cr[0] & CR0_PE_MASK) ||
 753                    (env->eflags & VM_MASK) ||
 754                    !(env->hflags & HF_CS32_MASK)) {
 755             /* XXX: try to avoid this test. The problem comes from the
 756                fact that is real mode or vm86 mode we only modify the
 757                'base' and 'selector' fields of the segment cache to go
 758                faster. A solution may be to force addseg to one in
 759                translate-i386.c. */
 760             new_hflags |= HF_ADDSEG_MASK;
 761         } else {
 762             new_hflags |= ((env->segs[R_DS].base |
 763                             env->segs[R_ES].base |
 764                             env->segs[R_SS].base) != 0) <<
 765                 HF_ADDSEG_SHIFT;
 766         }
 767         env->hflags = (env->hflags &
 768                        ~(HF_SS32_MASK | HF_ADDSEG_MASK)) | new_hflags;
 769     }
 770 }
 771
 772 int cpu_x86_get_descr_debug(CPUX86State *env, unsigned int selector,
 773                             target_ulong *base, unsigned int *limit,
 774                             unsigned int *flags);
 775
 776 /* wrapper, just in case memory mappings must be changed */
 777 static inline void cpu_x86_set_cpl(CPUX86State *s, int cpl)
 778 {
 779 #if HF_CPL_MASK == 3
 780     s->hflags = (s->hflags & ~HF_CPL_MASK) | cpl;
 781 #else
 782 #error HF_CPL_MASK is hardcoded
 783 #endif
 784 }
 785
 786 /* op_helper.c */
 787 /* used for debug or cpu save/restore */
 788 void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f);
 789 CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper);
 790
 791 /* cpu-exec.c */
 792 /* the following helpers are only usable in user mode simulation as
 793    they can trigger unexpected exceptions */
 794 void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector);
 795 void cpu_x86_fsave(CPUX86State *s, target_ulong ptr, int data32);
 796 void cpu_x86_frstor(CPUX86State *s, target_ulong ptr, int data32);
 797
 798 /* you can call this signal handler from your SIGBUS and SIGSEGV
 799    signal handlers to inform the virtual CPU of exceptions. non zero
 800    is returned if the signal was handled by the virtual CPU.  */
 801 int cpu_x86_signal_handler(int host_signum, void *pinfo,
 802                            void *puc);
 803
 804 /* helper.c */
 805 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr,
 806                              int is_write, int mmu_idx, int is_softmmu);
 807 void cpu_x86_set_a20(CPUX86State *env, int a20_state);
 808 void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count,
 809                    uint32_t *eax, uint32_t *ebx,
 810                    uint32_t *ecx, uint32_t *edx);
 811
 812 static inline int hw_breakpoint_enabled(unsigned long dr7, int index)
 813 {
 814     return (dr7 >> (index * 2)) & 3;
 815 }
 816
 817 static inline int hw_breakpoint_type(unsigned long dr7, int index)
 818 {
 819     return (dr7 >> (DR7_TYPE_SHIFT + (index * 2))) & 3;
 820 }
 821
 822 static inline int hw_breakpoint_len(unsigned long dr7, int index)
 823 {
 824     int len = ((dr7 >> (DR7_LEN_SHIFT + (index * 2))) & 3);
 825     return (len == 2) ? 8 : len + 1;
 826 }
 827
 828 void hw_breakpoint_insert(CPUX86State *env, int index);
 829 void hw_breakpoint_remove(CPUX86State *env, int index);
 830 int check_hw_breakpoints(CPUX86State *env, int force_dr6_update);
 831
 832 /* will be suppressed */
 833 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0);
 834 void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3);
 835 void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4);
 836
 837 /* hw/apic.c */
 838 void cpu_set_apic_base(CPUX86State *env, uint64_t val);
 839 uint64_t cpu_get_apic_base(CPUX86State *env);
 840 void cpu_set_apic_tpr(CPUX86State *env, uint8_t val);
 841 #ifndef NO_CPU_IO_DEFS
 842 uint8_t cpu_get_apic_tpr(CPUX86State *env);
 843 #endif
 844
 845 /* hw/pc.c */
 846 void cpu_smm_update(CPUX86State *env);
 847 uint64_t cpu_get_tsc(CPUX86State *env);
 848
 849 /* used to debug */
 850 #define X86_DUMP_FPU  0x0001 /* dump FPU state too */
 851 #define X86_DUMP_CCOP 0x0002 /* dump qemu flag cache */
 852
 853 #ifdef CONFIG_KQEMU
 854 static inline int cpu_get_time_fast(void)
 855 {
 856     int low, high;
 857     asm volatile("rdtsc" : "=a" (low), "=d" (high));
 858     return low;
 859 }
 860 #endif
 861
 862 #define TARGET_PAGE_BITS 12
 863
 864 #define cpu_init cpu_x86_init
 865 #define cpu_exec cpu_x86_exec
 866 #define cpu_gen_code cpu_x86_gen_code
 867 #define cpu_signal_handler cpu_x86_signal_handler
 868 #define cpu_list x86_cpu_list
 869
 870 #define CPU_SAVE_VERSION 10
 871
 872 /* MMU modes definitions */
 873 #define MMU_MODE0_SUFFIX _kernel
 874 #define MMU_MODE1_SUFFIX _user
 875 #define MMU_USER_IDX 1
 876 static inline int cpu_mmu_index (CPUState *env)
 877 {
 878     return (env->hflags & HF_CPL_MASK) == 3 ? 1 : 0;
 879 }
 880
 881 /* translate.c */
 882 void optimize_flags_init(void);
 883
 884 typedef struct CCTable {
 885     int (*compute_all)(void); /* return all the flags */
 886     int (*compute_c)(void);  /* return the C flag */
 887 } CCTable;
 888
 889 #if defined(CONFIG_USER_ONLY)
 890 static inline void cpu_clone_regs(CPUState *env, target_ulong newsp)
 891 {
 892     if (newsp)
 893         env->regs[R_ESP] = newsp;
 894     env->regs[R_EAX] = 0;
 895 }
 896 #endif
 897
 898 #include "cpu-all.h"
 899 #include "exec-all.h"
 900
 901 #include "svm.h"
 902
 903 static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb)
 904 {
 905     env->eip = tb->pc - tb->cs_base;
 906 }
 907
 908 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc,
 909                                         target_ulong *cs_base, int *flags)
 910 {
 911     *cs_base = env->segs[R_CS].base;
 912     *pc = *cs_base + env->eip;
 913     *flags = env->hflags |
 914         (env->eflags & (IOPL_MASK | TF_MASK | RF_MASK | VM_MASK));
 915 }
 916
 917 void apic_init_reset(CPUState *env);
 918 void apic_sipi(CPUState *env);
 919 void do_cpu_init(CPUState *env);
 920 void do_cpu_sipi(CPUState *env);
 921 #endif /* CPU_I386_H */