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/*
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 * i386 virtual CPU header
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 * 
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 *  Copyright (c) 2003 Fabrice Bellard
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 *
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 * This library is free software; you can redistribute it and/or
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 * modify it under the terms of the GNU Lesser General Public
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 * License as published by the Free Software Foundation; either
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 * version 2 of the License, or (at your option) any later version.
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 *
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 * This library is distributed in the hope that it will be useful,
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 * but WITHOUT ANY WARRANTY; without even the implied warranty of
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 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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 * Lesser General Public License for more details.
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 *
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 * You should have received a copy of the GNU Lesser General Public
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 * License along with this library; if not, write to the Free Software
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 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
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 */
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#ifndef CPU_I386_H
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#define CPU_I386_H
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#include "config.h"
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#ifdef TARGET_X86_64
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#define TARGET_LONG_BITS 64
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#else
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#define TARGET_LONG_BITS 32
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#endif
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/* target supports implicit self modifying code */
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#define TARGET_HAS_SMC
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/* support for self modifying code even if the modified instruction is
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   close to the modifying instruction */
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#define TARGET_HAS_PRECISE_SMC
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#define TARGET_HAS_ICE 1
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#ifdef TARGET_X86_64
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#define ELF_MACHINE        EM_X86_64
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#else
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#define ELF_MACHINE        EM_386
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#endif
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#include "cpu-defs.h"
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#include "softfloat.h"
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#if defined(__i386__) && !defined(CONFIG_SOFTMMU) && !defined(__APPLE__)
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#define USE_CODE_COPY
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#endif
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#define R_EAX 0
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#define R_ECX 1
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#define R_EDX 2
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#define R_EBX 3
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#define R_ESP 4
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#define R_EBP 5
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#define R_ESI 6
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#define R_EDI 7
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#define R_AL 0
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#define R_CL 1
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#define R_DL 2
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#define R_BL 3
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#define R_AH 4
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#define R_CH 5
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#define R_DH 6
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#define R_BH 7
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#define R_ES 0
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#define R_CS 1
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#define R_SS 2
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#define R_DS 3
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#define R_FS 4
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#define R_GS 5
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/* segment descriptor fields */
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#define DESC_G_MASK     (1 << 23)
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#define DESC_B_SHIFT    22
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#define DESC_B_MASK     (1 << DESC_B_SHIFT)
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#define DESC_L_SHIFT    21 /* x86_64 only : 64 bit code segment */
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#define DESC_L_MASK     (1 << DESC_L_SHIFT)
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#define DESC_AVL_MASK   (1 << 20)
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#define DESC_P_MASK     (1 << 15)
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#define DESC_DPL_SHIFT  13
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#define DESC_S_MASK     (1 << 12)
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#define DESC_TYPE_SHIFT 8
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#define DESC_A_MASK     (1 << 8)
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#define DESC_CS_MASK    (1 << 11) /* 1=code segment 0=data segment */
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#define DESC_C_MASK     (1 << 10) /* code: conforming */
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#define DESC_R_MASK     (1 << 9)  /* code: readable */
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#define DESC_E_MASK     (1 << 10) /* data: expansion direction */
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#define DESC_W_MASK     (1 << 9)  /* data: writable */
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#define DESC_TSS_BUSY_MASK (1 << 9)
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/* eflags masks */
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#define CC_C           0x0001
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#define CC_P         0x0004
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#define CC_A        0x0010
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#define CC_Z        0x0040
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#define CC_S    0x0080
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#define CC_O    0x0800
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#define TF_SHIFT   8
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#define IOPL_SHIFT 12
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#define VM_SHIFT   17
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#define TF_MASK                 0x00000100
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#define IF_MASK                 0x00000200
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#define DF_MASK                 0x00000400
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#define IOPL_MASK                0x00003000
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#define NT_MASK                         0x00004000
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#define RF_MASK                        0x00010000
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#define VM_MASK                        0x00020000
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#define AC_MASK                        0x00040000 
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#define VIF_MASK                0x00080000
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#define VIP_MASK                0x00100000
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#define ID_MASK                 0x00200000
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/* hidden flags - used internally by qemu to represent additionnal cpu
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   states. Only the CPL, INHIBIT_IRQ and HALTED are not redundant. We avoid
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   using the IOPL_MASK, TF_MASK and VM_MASK bit position to ease oring
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   with eflags. */
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/* current cpl */
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#define HF_CPL_SHIFT         0
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/* true if soft mmu is being used */
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#define HF_SOFTMMU_SHIFT     2
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/* true if hardware interrupts must be disabled for next instruction */
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#define HF_INHIBIT_IRQ_SHIFT 3
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/* 16 or 32 segments */
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#define HF_CS32_SHIFT        4
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#define HF_SS32_SHIFT        5
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/* zero base for DS, ES and SS : can be '0' only in 32 bit CS segment */
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#define HF_ADDSEG_SHIFT      6
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/* copy of CR0.PE (protected mode) */
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#define HF_PE_SHIFT          7
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#define HF_TF_SHIFT          8 /* must be same as eflags */
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#define HF_MP_SHIFT          9 /* the order must be MP, EM, TS */
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#define HF_EM_SHIFT         10
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#define HF_TS_SHIFT         11
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#define HF_IOPL_SHIFT       12 /* must be same as eflags */
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#define HF_LMA_SHIFT        14 /* only used on x86_64: long mode active */
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#define HF_CS64_SHIFT       15 /* only used on x86_64: 64 bit code segment  */
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#define HF_OSFXSR_SHIFT     16 /* CR4.OSFXSR */
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#define HF_VM_SHIFT         17 /* must be same as eflags */
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#define HF_HALTED_SHIFT     18 /* CPU halted */
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#define HF_SMM_SHIFT        19 /* CPU in SMM mode */
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#define HF_CPL_MASK          (3 << HF_CPL_SHIFT)
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#define HF_SOFTMMU_MASK      (1 << HF_SOFTMMU_SHIFT)
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#define HF_INHIBIT_IRQ_MASK  (1 << HF_INHIBIT_IRQ_SHIFT)
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#define HF_CS32_MASK         (1 << HF_CS32_SHIFT)
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#define HF_SS32_MASK         (1 << HF_SS32_SHIFT)
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#define HF_ADDSEG_MASK       (1 << HF_ADDSEG_SHIFT)
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#define HF_PE_MASK           (1 << HF_PE_SHIFT)
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#define HF_TF_MASK           (1 << HF_TF_SHIFT)
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#define HF_MP_MASK           (1 << HF_MP_SHIFT)
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#define HF_EM_MASK           (1 << HF_EM_SHIFT)
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#define HF_TS_MASK           (1 << HF_TS_SHIFT)
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#define HF_LMA_MASK          (1 << HF_LMA_SHIFT)
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#define HF_CS64_MASK         (1 << HF_CS64_SHIFT)
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#define HF_OSFXSR_MASK       (1 << HF_OSFXSR_SHIFT)
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#define HF_HALTED_MASK       (1 << HF_HALTED_SHIFT)
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#define HF_SMM_MASK          (1 << HF_SMM_SHIFT)
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#define CR0_PE_MASK  (1 << 0)
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#define CR0_MP_MASK  (1 << 1)
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#define CR0_EM_MASK  (1 << 2)
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#define CR0_TS_MASK  (1 << 3)
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#define CR0_ET_MASK  (1 << 4)
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#define CR0_NE_MASK  (1 << 5)
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#define CR0_WP_MASK  (1 << 16)
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#define CR0_AM_MASK  (1 << 18)
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#define CR0_PG_MASK  (1 << 31)
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#define CR4_VME_MASK  (1 << 0)
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#define CR4_PVI_MASK  (1 << 1)
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#define CR4_TSD_MASK  (1 << 2)
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#define CR4_DE_MASK   (1 << 3)
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#define CR4_PSE_MASK  (1 << 4)
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#define CR4_PAE_MASK  (1 << 5)
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#define CR4_PGE_MASK  (1 << 7)
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#define CR4_PCE_MASK  (1 << 8)
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#define CR4_OSFXSR_MASK (1 << 9)
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#define CR4_OSXMMEXCPT_MASK  (1 << 10)
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#define PG_PRESENT_BIT        0
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#define PG_RW_BIT        1
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#define PG_USER_BIT        2
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#define PG_PWT_BIT        3
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#define PG_PCD_BIT        4
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#define PG_ACCESSED_BIT        5
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#define PG_DIRTY_BIT        6
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#define PG_PSE_BIT        7
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#define PG_GLOBAL_BIT        8
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#define PG_NX_BIT        63
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#define PG_PRESENT_MASK  (1 << PG_PRESENT_BIT)
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#define PG_RW_MASK         (1 << PG_RW_BIT)
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#define PG_USER_MASK         (1 << PG_USER_BIT)
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#define PG_PWT_MASK         (1 << PG_PWT_BIT)
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#define PG_PCD_MASK         (1 << PG_PCD_BIT)
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#define PG_ACCESSED_MASK (1 << PG_ACCESSED_BIT)
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#define PG_DIRTY_MASK         (1 << PG_DIRTY_BIT)
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#define PG_PSE_MASK         (1 << PG_PSE_BIT)
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#define PG_GLOBAL_MASK         (1 << PG_GLOBAL_BIT)
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#define PG_NX_MASK         (1LL << PG_NX_BIT)
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#define PG_ERROR_W_BIT     1
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#define PG_ERROR_P_MASK    0x01
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#define PG_ERROR_W_MASK    (1 << PG_ERROR_W_BIT)
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#define PG_ERROR_U_MASK    0x04
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#define PG_ERROR_RSVD_MASK 0x08
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#define PG_ERROR_I_D_MASK  0x10
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#define MSR_IA32_APICBASE               0x1b
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#define MSR_IA32_APICBASE_BSP           (1<<8)
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#define MSR_IA32_APICBASE_ENABLE        (1<<11)
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#define MSR_IA32_APICBASE_BASE          (0xfffff<<12)
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#define MSR_IA32_SYSENTER_CS            0x174
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#define MSR_IA32_SYSENTER_ESP           0x175
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#define MSR_IA32_SYSENTER_EIP           0x176
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#define MSR_MCG_CAP                     0x179
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#define MSR_MCG_STATUS                  0x17a
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#define MSR_MCG_CTL                     0x17b
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#define MSR_PAT                         0x277
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#define MSR_EFER                        0xc0000080
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#define MSR_EFER_SCE   (1 << 0)
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#define MSR_EFER_LME   (1 << 8)
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#define MSR_EFER_LMA   (1 << 10)
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#define MSR_EFER_NXE   (1 << 11)
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#define MSR_EFER_FFXSR (1 << 14)
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#define MSR_STAR                        0xc0000081
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#define MSR_LSTAR                       0xc0000082
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#define MSR_CSTAR                       0xc0000083
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#define MSR_FMASK                       0xc0000084
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#define MSR_FSBASE                      0xc0000100
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#define MSR_GSBASE                      0xc0000101
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#define MSR_KERNELGSBASE                0xc0000102
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/* cpuid_features bits */
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#define CPUID_FP87 (1 << 0)
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#define CPUID_VME  (1 << 1)
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#define CPUID_DE   (1 << 2)
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#define CPUID_PSE  (1 << 3)
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#define CPUID_TSC  (1 << 4)
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#define CPUID_MSR  (1 << 5)
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#define CPUID_PAE  (1 << 6)
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#define CPUID_MCE  (1 << 7)
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#define CPUID_CX8  (1 << 8)
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#define CPUID_APIC (1 << 9)
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#define CPUID_SEP  (1 << 11) /* sysenter/sysexit */
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#define CPUID_MTRR (1 << 12)
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#define CPUID_PGE  (1 << 13)
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#define CPUID_MCA  (1 << 14)
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#define CPUID_CMOV (1 << 15)
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#define CPUID_PAT  (1 << 16)
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#define CPUID_PSE36   (1 << 17)
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#define CPUID_CLFLUSH (1 << 19)
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/* ... */
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#define CPUID_MMX  (1 << 23)
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#define CPUID_FXSR (1 << 24)
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#define CPUID_SSE  (1 << 25)
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#define CPUID_SSE2 (1 << 26)
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#define CPUID_EXT_SSE3     (1 << 0)
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#define CPUID_EXT_MONITOR  (1 << 3)
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#define CPUID_EXT_CX16     (1 << 13)
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#define CPUID_EXT2_SYSCALL (1 << 11)
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#define CPUID_EXT2_NX      (1 << 20)
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#define CPUID_EXT2_FFXSR   (1 << 25)
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#define CPUID_EXT2_LM      (1 << 29)
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#define EXCP00_DIVZ        0
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#define EXCP01_SSTP        1
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#define EXCP02_NMI        2
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#define EXCP03_INT3        3
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#define EXCP04_INTO        4
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#define EXCP05_BOUND        5
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#define EXCP06_ILLOP        6
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#define EXCP07_PREX        7
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#define EXCP08_DBLE        8
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#define EXCP09_XERR        9
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#define EXCP0A_TSS        10
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#define EXCP0B_NOSEG        11
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#define EXCP0C_STACK        12
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#define EXCP0D_GPF        13
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#define EXCP0E_PAGE        14
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#define EXCP10_COPR        16
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#define EXCP11_ALGN        17
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#define EXCP12_MCHK        18
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enum {
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    CC_OP_DYNAMIC, /* must use dynamic code to get cc_op */
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    CC_OP_EFLAGS,  /* all cc are explicitely computed, CC_SRC = flags */
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    CC_OP_MULB, /* modify all flags, C, O = (CC_SRC != 0) */
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    CC_OP_MULW,
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    CC_OP_MULL,
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    CC_OP_MULQ,
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    CC_OP_ADDB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
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    CC_OP_ADDW,
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    CC_OP_ADDL,
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    CC_OP_ADDQ,
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    CC_OP_ADCB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
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    CC_OP_ADCW,
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    CC_OP_ADCL,
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    CC_OP_ADCQ,
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    CC_OP_SUBB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
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    CC_OP_SUBW,
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    CC_OP_SUBL,
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    CC_OP_SUBQ,
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    CC_OP_SBBB, /* modify all flags, CC_DST = res, CC_SRC = src1 */
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    CC_OP_SBBW,
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    CC_OP_SBBL,
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    CC_OP_SBBQ,
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    CC_OP_LOGICB, /* modify all flags, CC_DST = res */
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    CC_OP_LOGICW,
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    CC_OP_LOGICL,
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    CC_OP_LOGICQ,
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    CC_OP_INCB, /* modify all flags except, CC_DST = res, CC_SRC = C */
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    CC_OP_INCW,
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    CC_OP_INCL,
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    CC_OP_INCQ,
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    CC_OP_DECB, /* modify all flags except, CC_DST = res, CC_SRC = C  */
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    CC_OP_DECW,
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    CC_OP_DECL,
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    CC_OP_DECQ,
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    CC_OP_SHLB, /* modify all flags, CC_DST = res, CC_SRC.msb = C */
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    CC_OP_SHLW,
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    CC_OP_SHLL,
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    CC_OP_SHLQ,
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    CC_OP_SARB, /* modify all flags, CC_DST = res, CC_SRC.lsb = C */
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    CC_OP_SARW,
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    CC_OP_SARL,
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    CC_OP_SARQ,
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    CC_OP_NB,
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};
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#ifdef FLOATX80
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#define USE_X86LDOUBLE
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#endif
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#ifdef USE_X86LDOUBLE
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typedef floatx80 CPU86_LDouble;
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#else
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typedef float64 CPU86_LDouble;
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#endif
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typedef struct SegmentCache {
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    uint32_t selector;
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    target_ulong base;
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    uint32_t limit;
376 2c0262af bellard
    uint32_t flags;
377 2c0262af bellard
} SegmentCache;
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typedef union {
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    uint8_t _b[16];
381 664e0f19 bellard
    uint16_t _w[8];
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    uint32_t _l[4];
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    uint64_t _q[2];
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    float32 _s[4];
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    float64 _d[2];
386 14ce26e7 bellard
} XMMReg;
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typedef union {
389 826461bb bellard
    uint8_t _b[8];
390 826461bb bellard
    uint16_t _w[2];
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    uint32_t _l[1];
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    uint64_t q;
393 826461bb bellard
} MMXReg;
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395 826461bb bellard
#ifdef WORDS_BIGENDIAN
396 826461bb bellard
#define XMM_B(n) _b[15 - (n)]
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#define XMM_W(n) _w[7 - (n)]
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#define XMM_L(n) _l[3 - (n)]
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#define XMM_S(n) _s[3 - (n)]
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#define XMM_Q(n) _q[1 - (n)]
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#define XMM_D(n) _d[1 - (n)]
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403 826461bb bellard
#define MMX_B(n) _b[7 - (n)]
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#define MMX_W(n) _w[3 - (n)]
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#define MMX_L(n) _l[1 - (n)]
406 826461bb bellard
#else
407 826461bb bellard
#define XMM_B(n) _b[n]
408 826461bb bellard
#define XMM_W(n) _w[n]
409 826461bb bellard
#define XMM_L(n) _l[n]
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#define XMM_S(n) _s[n]
411 826461bb bellard
#define XMM_Q(n) _q[n]
412 664e0f19 bellard
#define XMM_D(n) _d[n]
413 826461bb bellard
414 826461bb bellard
#define MMX_B(n) _b[n]
415 826461bb bellard
#define MMX_W(n) _w[n]
416 826461bb bellard
#define MMX_L(n) _l[n]
417 826461bb bellard
#endif
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#define MMX_Q(n) q
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#ifdef TARGET_X86_64
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#define CPU_NB_REGS 16
422 14ce26e7 bellard
#else
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#define CPU_NB_REGS 8
424 14ce26e7 bellard
#endif
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typedef struct CPUX86State {
427 14ce26e7 bellard
#if TARGET_LONG_BITS > HOST_LONG_BITS
428 14ce26e7 bellard
    /* temporaries if we cannot store them in host registers */
429 14ce26e7 bellard
    target_ulong t0, t1, t2;
430 14ce26e7 bellard
#endif
431 14ce26e7 bellard
432 2c0262af bellard
    /* standard registers */
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    target_ulong regs[CPU_NB_REGS];
434 14ce26e7 bellard
    target_ulong eip;
435 14ce26e7 bellard
    target_ulong eflags; /* eflags register. During CPU emulation, CC
436 2c0262af bellard
                        flags and DF are set to zero because they are
437 2c0262af bellard
                        stored elsewhere */
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439 2c0262af bellard
    /* emulator internal eflags handling */
440 14ce26e7 bellard
    target_ulong cc_src;
441 14ce26e7 bellard
    target_ulong cc_dst;
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    uint32_t cc_op;
443 2c0262af bellard
    int32_t df; /* D flag : 1 if D = 0, -1 if D = 1 */
444 2c0262af bellard
    uint32_t hflags; /* hidden flags, see HF_xxx constants */
445 2c0262af bellard
446 9df217a3 bellard
    /* segments */
447 9df217a3 bellard
    SegmentCache segs[6]; /* selector values */
448 9df217a3 bellard
    SegmentCache ldt;
449 9df217a3 bellard
    SegmentCache tr;
450 9df217a3 bellard
    SegmentCache gdt; /* only base and limit are used */
451 9df217a3 bellard
    SegmentCache idt; /* only base and limit are used */
452 9df217a3 bellard
453 9df217a3 bellard
    target_ulong cr[5]; /* NOTE: cr1 is unused */
454 9df217a3 bellard
    uint32_t a20_mask;
455 9df217a3 bellard
456 2c0262af bellard
    /* FPU state */
457 2c0262af bellard
    unsigned int fpstt; /* top of stack index */
458 2c0262af bellard
    unsigned int fpus;
459 2c0262af bellard
    unsigned int fpuc;
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    uint8_t fptags[8];   /* 0 = valid, 1 = empty */
461 664e0f19 bellard
    union {
462 664e0f19 bellard
#ifdef USE_X86LDOUBLE
463 664e0f19 bellard
        CPU86_LDouble d __attribute__((aligned(16)));
464 664e0f19 bellard
#else
465 664e0f19 bellard
        CPU86_LDouble d;
466 664e0f19 bellard
#endif
467 664e0f19 bellard
        MMXReg mmx;
468 664e0f19 bellard
    } fpregs[8];
469 2c0262af bellard
470 2c0262af bellard
    /* emulator internal variables */
471 7a0e1f41 bellard
    float_status fp_status;
472 2c0262af bellard
    CPU86_LDouble ft0;
473 2c0262af bellard
    union {
474 2c0262af bellard
        float f;
475 2c0262af bellard
        double d;
476 2c0262af bellard
        int i32;
477 2c0262af bellard
        int64_t i64;
478 2c0262af bellard
    } fp_convert;
479 2c0262af bellard
    
480 7a0e1f41 bellard
    float_status sse_status;
481 664e0f19 bellard
    uint32_t mxcsr;
482 14ce26e7 bellard
    XMMReg xmm_regs[CPU_NB_REGS];
483 14ce26e7 bellard
    XMMReg xmm_t0;
484 664e0f19 bellard
    MMXReg mmx_t0;
485 14ce26e7 bellard
486 2c0262af bellard
    /* sysenter registers */
487 2c0262af bellard
    uint32_t sysenter_cs;
488 2c0262af bellard
    uint32_t sysenter_esp;
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    uint32_t sysenter_eip;
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    uint64_t efer;
491 8d9bfc2b bellard
    uint64_t star;
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#ifdef TARGET_X86_64
493 14ce26e7 bellard
    target_ulong lstar;
494 14ce26e7 bellard
    target_ulong cstar;
495 14ce26e7 bellard
    target_ulong fmask;
496 14ce26e7 bellard
    target_ulong kernelgsbase;
497 14ce26e7 bellard
#endif
498 58fe2f10 bellard
499 8f091a59 bellard
    uint64_t pat;
500 8f091a59 bellard
501 58fe2f10 bellard
    /* temporary data for USE_CODE_COPY mode */
502 7eee2a50 bellard
#ifdef USE_CODE_COPY
503 58fe2f10 bellard
    uint32_t tmp0;
504 58fe2f10 bellard
    uint32_t saved_esp;
505 7eee2a50 bellard
    int native_fp_regs; /* if true, the FPU state is in the native CPU regs */
506 7eee2a50 bellard
#endif
507 2c0262af bellard
    
508 2c0262af bellard
    /* exception/interrupt handling */
509 2c0262af bellard
    jmp_buf jmp_env;
510 2c0262af bellard
    int exception_index;
511 2c0262af bellard
    int error_code;
512 2c0262af bellard
    int exception_is_int;
513 826461bb bellard
    target_ulong exception_next_eip;
514 14ce26e7 bellard
    target_ulong dr[8]; /* debug registers */
515 3b21e03e bellard
    uint32_t smbase;
516 2c0262af bellard
    int interrupt_request; 
517 2c0262af bellard
    int user_mode_only; /* user mode only simulation */
518 678dde13 ths
    int old_exception;  /* exception in flight */
519 2c0262af bellard
520 a316d335 bellard
    CPU_COMMON
521 2c0262af bellard
522 14ce26e7 bellard
    /* processor features (e.g. for CPUID insn) */
523 8d9bfc2b bellard
    uint32_t cpuid_level;
524 14ce26e7 bellard
    uint32_t cpuid_vendor1;
525 14ce26e7 bellard
    uint32_t cpuid_vendor2;
526 14ce26e7 bellard
    uint32_t cpuid_vendor3;
527 14ce26e7 bellard
    uint32_t cpuid_version;
528 14ce26e7 bellard
    uint32_t cpuid_features;
529 9df217a3 bellard
    uint32_t cpuid_ext_features;
530 8d9bfc2b bellard
    uint32_t cpuid_xlevel;
531 8d9bfc2b bellard
    uint32_t cpuid_model[12];
532 8d9bfc2b bellard
    uint32_t cpuid_ext2_features;
533 eae7629b ths
    uint32_t cpuid_apic_id;
534 8d9bfc2b bellard
    
535 9df217a3 bellard
#ifdef USE_KQEMU
536 9df217a3 bellard
    int kqemu_enabled;
537 f1c85677 bellard
    int last_io_time;
538 9df217a3 bellard
#endif
539 14ce26e7 bellard
    /* in order to simplify APIC support, we leave this pointer to the
540 14ce26e7 bellard
       user */
541 14ce26e7 bellard
    struct APICState *apic_state;
542 2c0262af bellard
} CPUX86State;
543 2c0262af bellard
544 2c0262af bellard
CPUX86State *cpu_x86_init(void);
545 2c0262af bellard
int cpu_x86_exec(CPUX86State *s);
546 2c0262af bellard
void cpu_x86_close(CPUX86State *s);
547 d720b93d bellard
int cpu_get_pic_interrupt(CPUX86State *s);
548 2ee73ac3 bellard
/* MSDOS compatibility mode FPU exception support */
549 2ee73ac3 bellard
void cpu_set_ferr(CPUX86State *s);
550 2c0262af bellard
551 2c0262af bellard
/* this function must always be used to load data in the segment
552 2c0262af bellard
   cache: it synchronizes the hflags with the segment cache values */
553 2c0262af bellard
static inline void cpu_x86_load_seg_cache(CPUX86State *env, 
554 2c0262af bellard
                                          int seg_reg, unsigned int selector,
555 8988ae89 bellard
                                          target_ulong base,
556 8988ae89 bellard
                                          unsigned int limit, 
557 2c0262af bellard
                                          unsigned int flags)
558 2c0262af bellard
{
559 2c0262af bellard
    SegmentCache *sc;
560 2c0262af bellard
    unsigned int new_hflags;
561 2c0262af bellard
    
562 2c0262af bellard
    sc = &env->segs[seg_reg];
563 2c0262af bellard
    sc->selector = selector;
564 2c0262af bellard
    sc->base = base;
565 2c0262af bellard
    sc->limit = limit;
566 2c0262af bellard
    sc->flags = flags;
567 2c0262af bellard
568 2c0262af bellard
    /* update the hidden flags */
569 14ce26e7 bellard
    {
570 14ce26e7 bellard
        if (seg_reg == R_CS) {
571 14ce26e7 bellard
#ifdef TARGET_X86_64
572 14ce26e7 bellard
            if ((env->hflags & HF_LMA_MASK) && (flags & DESC_L_MASK)) {
573 14ce26e7 bellard
                /* long mode */
574 14ce26e7 bellard
                env->hflags |= HF_CS32_MASK | HF_SS32_MASK | HF_CS64_MASK;
575 14ce26e7 bellard
                env->hflags &= ~(HF_ADDSEG_MASK);
576 14ce26e7 bellard
            } else 
577 14ce26e7 bellard
#endif
578 14ce26e7 bellard
            {
579 14ce26e7 bellard
                /* legacy / compatibility case */
580 14ce26e7 bellard
                new_hflags = (env->segs[R_CS].flags & DESC_B_MASK)
581 14ce26e7 bellard
                    >> (DESC_B_SHIFT - HF_CS32_SHIFT);
582 14ce26e7 bellard
                env->hflags = (env->hflags & ~(HF_CS32_MASK | HF_CS64_MASK)) |
583 14ce26e7 bellard
                    new_hflags;
584 14ce26e7 bellard
            }
585 14ce26e7 bellard
        }
586 14ce26e7 bellard
        new_hflags = (env->segs[R_SS].flags & DESC_B_MASK)
587 14ce26e7 bellard
            >> (DESC_B_SHIFT - HF_SS32_SHIFT);
588 14ce26e7 bellard
        if (env->hflags & HF_CS64_MASK) {
589 14ce26e7 bellard
            /* zero base assumed for DS, ES and SS in long mode */
590 14ce26e7 bellard
        } else if (!(env->cr[0] & CR0_PE_MASK) || 
591 735a8fd3 bellard
                   (env->eflags & VM_MASK) ||
592 735a8fd3 bellard
                   !(env->hflags & HF_CS32_MASK)) {
593 14ce26e7 bellard
            /* XXX: try to avoid this test. The problem comes from the
594 14ce26e7 bellard
               fact that is real mode or vm86 mode we only modify the
595 14ce26e7 bellard
               'base' and 'selector' fields of the segment cache to go
596 14ce26e7 bellard
               faster. A solution may be to force addseg to one in
597 14ce26e7 bellard
               translate-i386.c. */
598 14ce26e7 bellard
            new_hflags |= HF_ADDSEG_MASK;
599 14ce26e7 bellard
        } else {
600 735a8fd3 bellard
            new_hflags |= ((env->segs[R_DS].base | 
601 735a8fd3 bellard
                            env->segs[R_ES].base |
602 735a8fd3 bellard
                            env->segs[R_SS].base) != 0) << 
603 14ce26e7 bellard
                HF_ADDSEG_SHIFT;
604 14ce26e7 bellard
        }
605 14ce26e7 bellard
        env->hflags = (env->hflags & 
606 14ce26e7 bellard
                       ~(HF_SS32_MASK | HF_ADDSEG_MASK)) | new_hflags;
607 2c0262af bellard
    }
608 2c0262af bellard
}
609 2c0262af bellard
610 2c0262af bellard
/* wrapper, just in case memory mappings must be changed */
611 2c0262af bellard
static inline void cpu_x86_set_cpl(CPUX86State *s, int cpl)
612 2c0262af bellard
{
613 2c0262af bellard
#if HF_CPL_MASK == 3
614 2c0262af bellard
    s->hflags = (s->hflags & ~HF_CPL_MASK) | cpl;
615 2c0262af bellard
#else
616 2c0262af bellard
#error HF_CPL_MASK is hardcoded
617 2c0262af bellard
#endif
618 2c0262af bellard
}
619 2c0262af bellard
620 1f1af9fd bellard
/* used for debug or cpu save/restore */
621 1f1af9fd bellard
void cpu_get_fp80(uint64_t *pmant, uint16_t *pexp, CPU86_LDouble f);
622 1f1af9fd bellard
CPU86_LDouble cpu_set_fp80(uint64_t mant, uint16_t upper);
623 1f1af9fd bellard
624 2c0262af bellard
/* the following helpers are only usable in user mode simulation as
625 2c0262af bellard
   they can trigger unexpected exceptions */
626 2c0262af bellard
void cpu_x86_load_seg(CPUX86State *s, int seg_reg, int selector);
627 2c0262af bellard
void cpu_x86_fsave(CPUX86State *s, uint8_t *ptr, int data32);
628 2c0262af bellard
void cpu_x86_frstor(CPUX86State *s, uint8_t *ptr, int data32);
629 2c0262af bellard
630 2c0262af bellard
/* you can call this signal handler from your SIGBUS and SIGSEGV
631 2c0262af bellard
   signal handlers to inform the virtual CPU of exceptions. non zero
632 2c0262af bellard
   is returned if the signal was handled by the virtual CPU.  */
633 5a7b542b ths
int cpu_x86_signal_handler(int host_signum, void *pinfo, 
634 2c0262af bellard
                           void *puc);
635 461c0471 bellard
void cpu_x86_set_a20(CPUX86State *env, int a20_state);
636 2c0262af bellard
637 28ab0e2e bellard
uint64_t cpu_get_tsc(CPUX86State *env);
638 28ab0e2e bellard
639 14ce26e7 bellard
void cpu_set_apic_base(CPUX86State *env, uint64_t val);
640 14ce26e7 bellard
uint64_t cpu_get_apic_base(CPUX86State *env);
641 9230e66e bellard
void cpu_set_apic_tpr(CPUX86State *env, uint8_t val);
642 9230e66e bellard
#ifndef NO_CPU_IO_DEFS
643 9230e66e bellard
uint8_t cpu_get_apic_tpr(CPUX86State *env);
644 9230e66e bellard
#endif
645 3b21e03e bellard
void cpu_smm_update(CPUX86State *env);
646 14ce26e7 bellard
647 64a595f2 bellard
/* will be suppressed */
648 64a595f2 bellard
void cpu_x86_update_cr0(CPUX86State *env, uint32_t new_cr0);
649 64a595f2 bellard
650 2c0262af bellard
/* used to debug */
651 2c0262af bellard
#define X86_DUMP_FPU  0x0001 /* dump FPU state too */
652 2c0262af bellard
#define X86_DUMP_CCOP 0x0002 /* dump qemu flag cache */
653 2c0262af bellard
654 f1c85677 bellard
#ifdef USE_KQEMU
655 f1c85677 bellard
static inline int cpu_get_time_fast(void)
656 f1c85677 bellard
{
657 f1c85677 bellard
    int low, high;
658 f1c85677 bellard
    asm volatile("rdtsc" : "=a" (low), "=d" (high));
659 f1c85677 bellard
    return low;
660 f1c85677 bellard
}
661 f1c85677 bellard
#endif
662 f1c85677 bellard
663 2c0262af bellard
#define TARGET_PAGE_BITS 12
664 9467d44c ths
665 9467d44c ths
#define CPUState CPUX86State
666 9467d44c ths
#define cpu_init cpu_x86_init
667 9467d44c ths
#define cpu_exec cpu_x86_exec
668 9467d44c ths
#define cpu_gen_code cpu_x86_gen_code
669 9467d44c ths
#define cpu_signal_handler cpu_x86_signal_handler
670 9467d44c ths
671 2c0262af bellard
#include "cpu-all.h"
672 2c0262af bellard
673 2c0262af bellard
#endif /* CPU_I386_H */