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, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301 USA 19 */ 20 #ifndef CPU_I386_H 21 #define CPU_I386_H 22 23 #include "config.h" 24 25 #ifdef TARGET_X86_64 26 #define TARGET_LONG_BITS 64 27 #else 28 #define TARGET_LONG_BITS 32 29 #endif 30 31 /* target supports implicit self modifying code */ 32 #define TARGET_HAS_SMC 33 /* support for self modifying code even if the modified instruction is 34 close to the modifying instruction */ 35 #define TARGET_HAS_PRECISE_SMC 36 37 #define TARGET_HAS_ICE 1 38 39 #ifdef TARGET_X86_64 40 #define ELF_MACHINE EM_X86_64 41 #else 42 #define ELF_MACHINE EM_386 43 #endif 44 45 #define CPUState struct CPUX86State 46 47 #include "cpu-defs.h" 48 49 #include "softfloat.h" 50 51 #define R_EAX 0 52 #define R_ECX 1 53 #define R_EDX 2 54 #define R_EBX 3 55 #define R_ESP 4 56 #define R_EBP 5 57 #define R_ESI 6 58 #define R_EDI 7 59 60 #define R_AL 0 61 #define R_CL 1 62 #define R_DL 2 63 #define R_BL 3 64 #define R_AH 4 65 #define R_CH 5 66 #define R_DH 6 67 #define R_BH 7 68 69 #define R_ES 0 70 #define R_CS 1 71 #define R_SS 2 72 #define R_DS 3 73 #define R_FS 4 74 #define R_GS 5 75 76 /* segment descriptor fields */ 77 #define DESC_G_MASK (1 << 23) 78 #define DESC_B_SHIFT 22 79 #define DESC_B_MASK (1 << DESC_B_SHIFT) 80 #define DESC_L_SHIFT 21 /* x86_64 only : 64 bit code segment */ 81 #define DESC_L_MASK (1 << DESC_L_SHIFT) 82 #define DESC_AVL_MASK (1 << 20) 83 #define DESC_P_MASK (1 << 15) 84 #define DESC_DPL_SHIFT 13 85 #define DESC_DPL_MASK (3 << DESC_DPL_SHIFT) 86 #define DESC_S_MASK (1 << 12) 87 #define DESC_TYPE_SHIFT 8 88 #define DESC_TYPE_MASK (15 << DESC_TYPE_SHIFT) 89 #define DESC_A_MASK (1 << 8) 90 91 #define DESC_CS_MASK (1 << 11) /* 1=code segment 0=data segment */ 92 #define DESC_C_MASK (1 << 10) /* code: conforming */ 93 #define DESC_R_MASK (1 << 9) /* code: readable */ 94 95 #define DESC_E_MASK (1 << 10) /* data: expansion direction */ 96 #define DESC_W_MASK (1 << 9) /* data: writable */ 97 98 #define DESC_TSS_BUSY_MASK (1 << 9) 99 100 /* eflags masks */ 101 #define CC_C 0x0001 102 #define CC_P 0x0004 103 #define CC_A 0x0010 104 #define CC_Z 0x0040 105 #define CC_S 0x0080 106 #define CC_O 0x0800 107 108 #define TF_SHIFT 8 109 #define IOPL_SHIFT 12 110 #define VM_SHIFT 17 111 112 #define TF_MASK 0x00000100 113 #define IF_MASK 0x00000200 114 #define DF_MASK 0x00000400 115 #define IOPL_MASK 0x00003000 116 #define NT_MASK 0x00004000 117 #define RF_MASK 0x00010000 118 #define VM_MASK 0x00020000 119 #define AC_MASK 0x00040000 120 #define VIF_MASK 0x00080000 121 #define VIP_MASK 0x00100000 122 #define ID_MASK 0x00200000 123 124 /* hidden flags - used internally by qemu to represent additional cpu 125 states. Only the CPL, INHIBIT_IRQ, SMM and SVMI are not 126 redundant. We avoid using the IOPL_MASK, TF_MASK and VM_MASK bit 127 position to ease oring with eflags. */ 128 /* current cpl */ 129 #define HF_CPL_SHIFT 0 130 /* true if soft mmu is being used */ 131 #define HF_SOFTMMU_SHIFT 2 132 /* true if hardware interrupts must be disabled for next instruction */ 133 #define HF_INHIBIT_IRQ_SHIFT 3 134 /* 16 or 32 segments */ 135 #define HF_CS32_SHIFT 4 136 #define HF_SS32_SHIFT 5 137 /* zero base for DS, ES and SS : can be '0' only in 32 bit CS segment */ 138 #define HF_ADDSEG_SHIFT 6 139 /* copy of CR0.PE (protected mode) */ 140 #define HF_PE_SHIFT 7 141 #define HF_TF_SHIFT 8 /* must be same as eflags */ 142 #define HF_MP_SHIFT 9 /* the order must be MP, EM, TS */ 143 #define HF_EM_SHIFT 10 144 #define HF_TS_SHIFT 11 145 #define HF_IOPL_SHIFT 12 /* must be same as eflags */ 146 #define HF_LMA_SHIFT 14 /* only used on x86_64: long mode active */ 147 #define HF_CS64_SHIFT 15 /* only used on x86_64: 64 bit code segment */ 148 #define HF_RF_SHIFT 16 /* must be same as eflags */ 149 #define HF_VM_SHIFT 17 /* must be same as eflags */ 150 #define HF_SMM_SHIFT 19 /* CPU in SMM mode */ 151 #define HF_SVME_SHIFT 20 /* SVME enabled (copy of EFER.SVME) */ 152 #define HF_SVMI_SHIFT 21 /* SVM intercepts are active */ 153 #define HF_OSFXSR_SHIFT 22 /* CR4.OSFXSR */ 154 155 #define HF_CPL_MASK (3 << HF_CPL_SHIFT) 156 #define HF_SOFTMMU_MASK (1 << HF_SOFTMMU_SHIFT) 157 #define HF_INHIBIT_IRQ_MASK (1 << HF_INHIBIT_IRQ_SHIFT) 158 #define HF_CS32_MASK (1 << HF_CS32_SHIFT) 159 #define HF_SS32_MASK (1 << HF_SS32_SHIFT) 160 #define HF_ADDSEG_MASK (1 << HF_ADDSEG_SHIFT) 161 #define HF_PE_MASK (1 << HF_PE_SHIFT) 162 #define HF_TF_MASK (1 << HF_TF_SHIFT) 163 #define HF_MP_MASK (1 << HF_MP_SHIFT) 164 #define HF_EM_MASK (1 << HF_EM_SHIFT) 165 #define HF_TS_MASK (1 << HF_TS_SHIFT) 166 #define HF_IOPL_MASK (3 << HF_IOPL_SHIFT) 167 #define HF_LMA_MASK (1 << HF_LMA_SHIFT) 168 #define HF_CS64_MASK (1 << HF_CS64_SHIFT) 169 #define HF_RF_MASK (1 << HF_RF_SHIFT) 170 #define HF_VM_MASK (1 << HF_VM_SHIFT) 171 #define HF_SMM_MASK (1 << HF_SMM_SHIFT) 172 #define HF_SVME_MASK (1 << HF_SVME_SHIFT) 173 #define HF_SVMI_MASK (1 << HF_SVMI_SHIFT) 174 #define HF_OSFXSR_MASK (1 << HF_OSFXSR_SHIFT) 175 176 /* hflags2 */ 177 178 #define HF2_GIF_SHIFT 0 /* if set CPU takes interrupts */ 179 #define HF2_HIF_SHIFT 1 /* value of IF_MASK when entering SVM */ 180 #define HF2_NMI_SHIFT 2 /* CPU serving NMI */ 181 #define HF2_VINTR_SHIFT 3 /* value of V_INTR_MASKING bit */ 182 183 #define HF2_GIF_MASK (1 << HF2_GIF_SHIFT) 184 #define HF2_HIF_MASK (1 << HF2_HIF_SHIFT) 185 #define HF2_NMI_MASK (1 << HF2_NMI_SHIFT) 186 #define HF2_VINTR_MASK (1 << HF2_VINTR_SHIFT) 187 188 #define CR0_PE_SHIFT 0 189 #define CR0_MP_SHIFT 1 190 191 #define CR0_PE_MASK (1 << 0) 192 #define CR0_MP_MASK (1 << 1) 193 #define CR0_EM_MASK (1 << 2) 194 #define CR0_TS_MASK (1 << 3) 195 #define CR0_ET_MASK (1 << 4) 196 #define CR0_NE_MASK (1 << 5) 197 #define CR0_WP_MASK (1 << 16) 198 #define CR0_AM_MASK (1 << 18) 199 #define CR0_PG_MASK (1 << 31) 200 201 #define CR4_VME_MASK (1 << 0) 202 #define CR4_PVI_MASK (1 << 1) 203 #define CR4_TSD_MASK (1 << 2) 204 #define CR4_DE_MASK (1 << 3) 205 #define CR4_PSE_MASK (1 << 4) 206 #define CR4_PAE_MASK (1 << 5) 207 #define CR4_MCE_MASK (1 << 6) 208 #define CR4_PGE_MASK (1 << 7) 209 #define CR4_PCE_MASK (1 << 8) 210 #define CR4_OSFXSR_SHIFT 9 211 #define CR4_OSFXSR_MASK (1 << CR4_OSFXSR_SHIFT) 212 #define CR4_OSXMMEXCPT_MASK (1 << 10) 213 214 #define DR6_BD (1 << 13) 215 #define DR6_BS (1 << 14) 216 #define DR6_BT (1 << 15) 217 #define DR6_FIXED_1 0xffff0ff0 218 219 #define DR7_GD (1 << 13) 220 #define DR7_TYPE_SHIFT 16 221 #define DR7_LEN_SHIFT 18 222 #define DR7_FIXED_1 0x00000400 223 224 #define PG_PRESENT_BIT 0 225 #define PG_RW_BIT 1 226 #define PG_USER_BIT 2 227 #define PG_PWT_BIT 3 228 #define PG_PCD_BIT 4 229 #define PG_ACCESSED_BIT 5 230 #define PG_DIRTY_BIT 6 231 #define PG_PSE_BIT 7 232 #define PG_GLOBAL_BIT 8 233 #define PG_NX_BIT 63 234 235 #define PG_PRESENT_MASK (1 << PG_PRESENT_BIT) 236 #define PG_RW_MASK (1 << PG_RW_BIT) 237 #define PG_USER_MASK (1 << PG_USER_BIT) 238 #define PG_PWT_MASK (1 << PG_PWT_BIT) 239 #define PG_PCD_MASK (1 << PG_PCD_BIT) 240 #define PG_ACCESSED_MASK (1 << PG_ACCESSED_BIT) 241 #define PG_DIRTY_MASK (1 << PG_DIRTY_BIT) 242 #define PG_PSE_MASK (1 << PG_PSE_BIT) 243 #define PG_GLOBAL_MASK (1 << PG_GLOBAL_BIT) 244 #define PG_NX_MASK (1LL << PG_NX_BIT) 245 246 #define PG_ERROR_W_BIT 1 247 248 #define PG_ERROR_P_MASK 0x01 249 #define PG_ERROR_W_MASK (1 << PG_ERROR_W_BIT) 250 #define PG_ERROR_U_MASK 0x04 251 #define PG_ERROR_RSVD_MASK 0x08 252 #define PG_ERROR_I_D_MASK 0x10 253 254 #define MCG_CTL_P (1UL<<8) /* MCG_CAP register available */ 255 256 #define MCE_CAP_DEF MCG_CTL_P 257 #define MCE_BANKS_DEF 10 258 259 #define MCG_STATUS_MCIP (1UL<<2) /* machine check in progress */ 260 261 #define MCI_STATUS_VAL (1UL<<63) /* valid error */ 262 #define MCI_STATUS_OVER (1UL<<62) /* previous errors lost */ 263 #define MCI_STATUS_UC (1UL<<61) /* uncorrected error */ 264 265 #define MSR_IA32_TSC 0x10 266 #define MSR_IA32_APICBASE 0x1b 267 #define MSR_IA32_APICBASE_BSP (1<<8) 268 #define MSR_IA32_APICBASE_ENABLE (1<<11) 269 #define MSR_IA32_APICBASE_BASE (0xfffff<<12) 270 271 #define MSR_MTRRcap 0xfe 272 #define MSR_MTRRcap_VCNT 8 273 #define MSR_MTRRcap_FIXRANGE_SUPPORT (1 << 8) 274 #define MSR_MTRRcap_WC_SUPPORTED (1 << 10) 275 276 #define MSR_IA32_SYSENTER_CS 0x174 277 #define MSR_IA32_SYSENTER_ESP 0x175 278 #define MSR_IA32_SYSENTER_EIP 0x176 279 280 #define MSR_MCG_CAP 0x179 281 #define MSR_MCG_STATUS 0x17a 282 #define MSR_MCG_CTL 0x17b 283 284 #define MSR_IA32_PERF_STATUS 0x198 285 286 #define MSR_MTRRphysBase(reg) (0x200 + 2 * (reg)) 287 #define MSR_MTRRphysMask(reg) (0x200 + 2 * (reg) + 1) 288 289 #define MSR_MTRRfix64K_00000 0x250 290 #define MSR_MTRRfix16K_80000 0x258 291 #define MSR_MTRRfix16K_A0000 0x259 292 #define MSR_MTRRfix4K_C0000 0x268 293 #define MSR_MTRRfix4K_C8000 0x269 294 #define MSR_MTRRfix4K_D0000 0x26a 295 #define MSR_MTRRfix4K_D8000 0x26b 296 #define MSR_MTRRfix4K_E0000 0x26c 297 #define MSR_MTRRfix4K_E8000 0x26d 298 #define MSR_MTRRfix4K_F0000 0x26e 299 #define MSR_MTRRfix4K_F8000 0x26f 300 301 #define MSR_PAT 0x277 302 303 #define MSR_MTRRdefType 0x2ff 304 305 #define MSR_MC0_CTL 0x400 306 #define MSR_MC0_STATUS 0x401 307 #define MSR_MC0_ADDR 0x402 308 #define MSR_MC0_MISC 0x403 309 310 #define MSR_EFER 0xc0000080 311 312 #define MSR_EFER_SCE (1 << 0) 313 #define MSR_EFER_LME (1 << 8) 314 #define MSR_EFER_LMA (1 << 10) 315 #define MSR_EFER_NXE (1 << 11) 316 #define MSR_EFER_SVME (1 << 12) 317 #define MSR_EFER_FFXSR (1 << 14) 318 319 #define MSR_STAR 0xc0000081 320 #define MSR_LSTAR 0xc0000082 321 #define MSR_CSTAR 0xc0000083 322 #define MSR_FMASK 0xc0000084 323 #define MSR_FSBASE 0xc0000100 324 #define MSR_GSBASE 0xc0000101 325 #define MSR_KERNELGSBASE 0xc0000102 326 327 #define MSR_VM_HSAVE_PA 0xc0010117 328 329 /* cpuid_features bits */ 330 #define CPUID_FP87 (1 << 0) 331 #define CPUID_VME (1 << 1) 332 #define CPUID_DE (1 << 2) 333 #define CPUID_PSE (1 << 3) 334 #define CPUID_TSC (1 << 4) 335 #define CPUID_MSR (1 << 5) 336 #define CPUID_PAE (1 << 6) 337 #define CPUID_MCE (1 << 7) 338 #define CPUID_CX8 (1 << 8) 339 #define CPUID_APIC (1 << 9) 340 #define CPUID_SEP (1 << 11) /* sysenter/sysexit */ 341 #define CPUID_MTRR (1 << 12) 342 #define CPUID_PGE (1 << 13) 343 #define CPUID_MCA (1 << 14) 344 #define CPUID_CMOV (1 << 15) 345 #define CPUID_PAT (1 << 16) 346 #define CPUID_PSE36 (1 << 17) 347 #define CPUID_PN (1 << 18) 348 #define CPUID_CLFLUSH (1 << 19) 349 #define CPUID_DTS (1 << 21) 350 #define CPUID_ACPI (1 << 22) 351 #define CPUID_MMX (1 << 23) 352 #define CPUID_FXSR (1 << 24) 353 #define CPUID_SSE (1 << 25) 354 #define CPUID_SSE2 (1 << 26) 355 #define CPUID_SS (1 << 27) 356 #define CPUID_HT (1 << 28) 357 #define CPUID_TM (1 << 29) 358 #define CPUID_IA64 (1 << 30) 359 #define CPUID_PBE (1 << 31) 360 361 #define CPUID_EXT_SSE3 (1 << 0) 362 #define CPUID_EXT_DTES64 (1 << 2) 363 #define CPUID_EXT_MONITOR (1 << 3) 364 #define CPUID_EXT_DSCPL (1 << 4) 365 #define CPUID_EXT_VMX (1 << 5) 366 #define CPUID_EXT_SMX (1 << 6) 367 #define CPUID_EXT_EST (1 << 7) 368 #define CPUID_EXT_TM2 (1 << 8) 369 #define CPUID_EXT_SSSE3 (1 << 9) 370 #define CPUID_EXT_CID (1 << 10) 371 #define CPUID_EXT_CX16 (1 << 13) 372 #define CPUID_EXT_XTPR (1 << 14) 373 #define CPUID_EXT_PDCM (1 << 15) 374 #define CPUID_EXT_DCA (1 << 18) 375 #define CPUID_EXT_SSE41 (1 << 19) 376 #define CPUID_EXT_SSE42 (1 << 20) 377 #define CPUID_EXT_X2APIC (1 << 21) 378 #define CPUID_EXT_MOVBE (1 << 22) 379 #define CPUID_EXT_POPCNT (1 << 23) 380 #define CPUID_EXT_XSAVE (1 << 26) 381 #define CPUID_EXT_OSXSAVE (1 << 27) 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 /* wrapper, just in case memory mappings must be changed */ 773 static inline void cpu_x86_set_cpl(CPUX86State *s, int cpl) 774 { 775 #if HF_CPL_MASK == 3 776 s->hflags = (s->hflags & ~HF_CPL_MASK) | cpl; 777 #else 778 #error HF_CPL_MASK is hardcoded 779 #endif 780 } 781 782 /* op_helper.c */ 783 /* used for debug or cpu save/restore */ 784 void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f); 785 CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper); 786 787 /* cpu-exec.c */ 788 /* the following helpers are only usable in user mode simulation as 789 they can trigger unexpected exceptions */ 790 void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector); 791 void cpu_x86_fsave(CPUX86State *s, target_ulong ptr, int data32); 792 void cpu_x86_frstor(CPUX86State *s, target_ulong ptr, int data32); 793 794 /* you can call this signal handler from your SIGBUS and SIGSEGV 795 signal handlers to inform the virtual CPU of exceptions. non zero 796 is returned if the signal was handled by the virtual CPU. */ 797 int cpu_x86_signal_handler(int host_signum, void *pinfo, 798 void *puc); 799 800 /* helper.c */ 801 int cpu_x86_handle_mmu_fault(CPUX86State *env, target_ulong addr, 802 int is_write, int mmu_idx, int is_softmmu); 803 void cpu_x86_set_a20(CPUX86State *env, int a20_state); 804 void cpu_x86_cpuid(CPUX86State *env, uint32_t index, uint32_t count, 805 uint32_t *eax, uint32_t *ebx, 806 uint32_t *ecx, uint32_t *edx); 807 808 static inline int hw_breakpoint_enabled(unsigned long dr7, int index) 809 { 810 return (dr7 >> (index * 2)) & 3; 811 } 812 813 static inline int hw_breakpoint_type(unsigned long dr7, int index) 814 { 815 return (dr7 >> (DR7_TYPE_SHIFT + (index * 2))) & 3; 816 } 817 818 static inline int hw_breakpoint_len(unsigned long dr7, int index) 819 { 820 int len = ((dr7 >> (DR7_LEN_SHIFT + (index * 2))) & 3); 821 return (len == 2) ? 8 : len + 1; 822 } 823 824 void hw_breakpoint_insert(CPUX86State *env, int index); 825 void hw_breakpoint_remove(CPUX86State *env, int index); 826 int check_hw_breakpoints(CPUX86State *env, int force_dr6_update); 827 828 /* will be suppressed */ 829 void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0); 830 void cpu_x86_update_cr3(CPUX86State *env, target_ulong new_cr3); 831 void cpu_x86_update_cr4(CPUX86State *env, uint32_t new_cr4); 832 833 /* hw/apic.c */ 834 void cpu_set_apic_base(CPUX86State *env, uint64_t val); 835 uint64_t cpu_get_apic_base(CPUX86State *env); 836 void cpu_set_apic_tpr(CPUX86State *env, uint8_t val); 837 #ifndef NO_CPU_IO_DEFS 838 uint8_t cpu_get_apic_tpr(CPUX86State *env); 839 #endif 840 841 /* hw/pc.c */ 842 void cpu_smm_update(CPUX86State *env); 843 uint64_t cpu_get_tsc(CPUX86State *env); 844 845 /* used to debug */ 846 #define X86_DUMP_FPU 0x0001 /* dump FPU state too */ 847 #define X86_DUMP_CCOP 0x0002 /* dump qemu flag cache */ 848 849 #ifdef CONFIG_KQEMU 850 static inline int cpu_get_time_fast(void) 851 { 852 int low, high; 853 asm volatile("rdtsc" : "=a" (low), "=d" (high)); 854 return low; 855 } 856 #endif 857 858 #define TARGET_PAGE_BITS 12 859 860 #define cpu_init cpu_x86_init 861 #define cpu_exec cpu_x86_exec 862 #define cpu_gen_code cpu_x86_gen_code 863 #define cpu_signal_handler cpu_x86_signal_handler 864 #define cpu_list x86_cpu_list 865 866 #define CPU_SAVE_VERSION 10 867 868 /* MMU modes definitions */ 869 #define MMU_MODE0_SUFFIX _kernel 870 #define MMU_MODE1_SUFFIX _user 871 #define MMU_USER_IDX 1 872 static inline int cpu_mmu_index (CPUState *env) 873 { 874 return (env->hflags & HF_CPL_MASK) == 3 ? 1 : 0; 875 } 876 877 /* translate.c */ 878 void optimize_flags_init(void); 879 880 typedef struct CCTable { 881 int (*compute_all)(void); /* return all the flags */ 882 int (*compute_c)(void); /* return the C flag */ 883 } CCTable; 884 885 /* XXX not defined yet. Should be fixed */ 886 static inline int is_cpu_user(CPUState *env) 887 { 888 return 0; 889 } 890 891 #if defined(CONFIG_USER_ONLY) 892 static inline void cpu_clone_regs(CPUState *env, target_ulong newsp) 893 { 894 if (newsp) 895 env->regs[R_ESP] = newsp; 896 env->regs[R_EAX] = 0; 897 } 898 #endif 899 900 #include "cpu-all.h" 901 #include "exec-all.h" 902 903 #include "svm.h" 904 905 static inline void cpu_pc_from_tb(CPUState *env, TranslationBlock *tb) 906 { 907 env->eip = tb->pc - tb->cs_base; 908 } 909 910 static inline void cpu_get_tb_cpu_state(CPUState *env, target_ulong *pc, 911 target_ulong *cs_base, int *flags) 912 { 913 *cs_base = env->segs[R_CS].base; 914 *pc = *cs_base + env->eip; 915 *flags = env->hflags | 916 (env->eflags & (IOPL_MASK | TF_MASK | RF_MASK | VM_MASK)); 917 } 918 919 void apic_init_reset(CPUState *env); 920 void apic_sipi(CPUState *env); 921 void do_cpu_init(CPUState *env); 922 void do_cpu_sipi(CPUState *env); 923 #endif /* CPU_I386_H */ 924
