【笔记】AMD64体系常用到的数据结构

小俊发表于 2020-5-26 19:39

本帖最后由小俊于 2020-5-26 19:47 编辑

#pragma pack(1)

////////////////////////////
// Control Register //
////////////////////////////

struct Control_Register_0
{
   unsigned PE : 1;
   unsigned MP : 1;
   unsigned EM : 1;
   unsigned TS : 1;
   unsigned ET : 1;
   unsigned NE : 1;
   unsigned Reserved0 : 10;

   unsigned WP : 1;
   unsigned Reserved1 : 1;
   unsigned AM : 1;
   unsigned Reserved2 : 10;
   unsigned NW : 1;
   unsigned CD : 1;
   unsigned PG : 1;
};

struct Control_Register_4
{
   unsigned VME : 1;
   unsigned PVI : 1;
   unsigned TSD : 1;
   unsigned DE : 1;
   unsigned PSE : 1;
   unsigned PAE : 1;
   unsigned MCE : 1;
   unsigned PGE : 1;

   unsigned PCE : 1;
   unsigned OSFXSR : 1;
   unsigned OSXMMEXCPT : 1;
   unsigned UMIP : 1;
   unsigned Reserved0 : 1;
   unsigned VMXE : 1;
   unsigned SMXE : 1;
   unsigned Reserved1 : 1;

   unsigned FSGSBASE : 1;
   unsigned PCIDE : 1;
   unsigned OSXSAVE : 1;
   unsigned Reserved2 : 1;
   unsigned SMEP : 1;
   unsigned SMAP : 1;
   unsigned PKE : 1;

   unsigned Reserved3 : 9;
};

struct EFLAGS_Register
{
   unsigned CF : 1;
   unsigned Reserved0 : 1;
   unsigned PF : 1;
   unsigned Reserved1 : 1;
   unsigned AF : 1;
   unsigned Reserved2 : 1;
   unsigned ZF : 1;
   unsigned SF : 1;

   unsigned TF : 1;
   unsigned IF : 1;
   unsigned DF : 1;
   unsigned OF : 1;
   unsigned IOPL : 2;
   unsigned NT : 1;
   unsigned Reserved3 : 1;

   unsigned RF : 1;
   unsigned VM : 1;
   unsigned AC : 1;
   unsigned VIF : 1;
   unsigned VIP : 1;
   unsigned ID : 1;
   unsigned Reserved4 : 10;
};

////////////////////////
// Segmentation //
////////////////////////

struct Segment_Selector
{
   unsigned short RPL : 2;
   unsigned short TI : 1;
   unsigned short Index : 13;
};

struct Descriptor_Table_Register
{
   void* BaseAddress;
   unsigned short Limit;
};

struct Segment_Descriptor
{
   unsigned Limit0 : 16;
   unsigned Base0 : 16;
   unsigned Base1 : 8;

   unsigned Type : 4;
   unsigned S : 1;
   unsigned DPL : 2;
   unsigned P : 1;

   unsigned Limit1 : 4;

   unsigned AVL : 1;
   unsigned L : 1;
   unsigned D_B : 1;
   unsigned G : 1;

   unsigned Base2 : 8;
};

struct Gate_Descriptors
{
   unsigned short Offset0;
   struct Segment_Selector Selector;

   unsigned IST : 2;
   unsigned Reserved : 6;

   unsigned Type : 4;
   unsigned S : 1;
   unsigned DPL : 2;
   unsigned P : 1;

   unsigned Offset1 : 16;
};

struct Gate_Descriptors_64
{
   struct Gate_Descriptors Gate;
   unsigned Offset2;
   unsigned Reserved;
};

//////////////////
// Paging //
//////////////////

// Intel Table 4-5.
// AMD Figure 5-5.
struct Page_Directory_Entry
{
   unsigned P : 1;
   unsigned R_W : 1;
   unsigned U_S : 1;
   unsigned PWT : 1;

   unsigned PCD : 1;
   unsigned A : 1;
   unsigned Ignored0 : 1;
   unsigned PS : 1;

   unsigned Ignored1 : 4;

   unsigned PageTableBaseAddress : 20;
};

// Intel Table 4-6.
// AMD Figure 5-6.
struct Page_Table_Entry
{
   unsigned P : 1;
   unsigned R_W : 1;
   unsigned U_S : 1;
   unsigned PWT : 1;

   unsigned PCD : 1;
   unsigned A : 1;
   unsigned D : 1;
   unsigned PAT : 1;

   unsigned G : 1;
   unsigned Ignored : 3;

   unsigned PhysicalPageBaseAddress : 20;
};

// Physical-Address Extensions

// Intel Table 4-8.
// AMD Figure 5-10.
struct Page_Directory_Pointer_Entry
{
   unsigned P : 1;
   unsigned Reserved0 : 2;
   unsigned PWT : 1;

   unsigned PCD : 1;
   unsigned Reserved1 : 4;
   unsigned Ignored : 3;

   unsigned PageTableBaseAddress0 : 20;

   unsigned PageTableBaseAddress1 : 20;
   unsigned Reserved2 : 12;
};

// Intel Table 4-10.
// AMD Figure 5-11.
struct Page_Directory_Entry_PAE
{
   struct Page_Directory_Entry PageDirectoryEntry;
   unsigned PageTableBaseAddress : 20;
   unsigned Reserved : 11;
   unsigned NX : 1;
};

// Intel Table 4-11.
// AMD Figure 5-12.
struct Page_Table_Entry_PAE
{
   struct Page_Table_Entry PageTableEntry;
   unsigned PhysicalPageBaseAddress : 20;
   unsigned Reserved : 11;
   unsigned NX : 1;
};

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【笔记】AMD64体系常用到的数据结构