TSS的定义

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/* author: mik  * project: pm_simulation （一个保护模式行为模拟器）  *  * tss.h 这个文件描述TSS块  */     #ifndef __TSS__ #define __TSS__     /* 定义 TSS  */ typedef struct TASK_STATE_SEG {     unsigned link : 16;          /* TSS selector link */     unsigned : 16;               /* reserved */     unsigned esp0;               /* 0 privilege-level stack pointer */     unsigned ss0 : 16;           /* 0 privilege-level stack ss register */     unsigned : 16;               /* reserved */     unsigned esp1;               /* 1 privilege-level stack pointer */     unsigned ss1 : 16;           /* 1 privilege-level stack ss register */     unsigned : 16;               /* reserved */     unsigned esp2;               /* 2 privilege-level stack pointer */     unsigned ss2 : 16;           /* 2 privilege-level stack ss register */     unsigned : 16;               /* reserved */     unsigned cr3;                /* CR3 register */     unsigned eip;                /* EIP register */     unsigned eflags;             /* EFLAGS register */     unsinged eax;                /* EAX register */     unsigned ecx;                /* ECX register */     unsinged edx;                /* EDX register */     unsigned ebx;                /* EBX register */     unsigned esp;                /* ESP register */     unsigned ebp;                /* EBP register */     unsigned esi;                /* ESI register */     unsigned edi;                /* EDI register */     unsigned es : 16;            /* ES segment register */     unsigned : 16;               /* reserved */     unsigned cs : 16;            /* CS segment register */     unsigned : 16;               /* reserved */     unsigned ss : 16;            /* SS segment register */     unsigned : 16;               /* reserved */     unsigned ds : 16;            /* DS segment register */     unsigned : 16;               /* reserved */     unsigned fs : 16;            /* FS segment register */     unsigned : 16;               /* reserved */     unsigned gs : 16;            /* GS segment register */     unsigned : 16;               /* reserved */     unsigned t : 1;              /* T filed */     unsigned : 15;               /* reserved */     unsigned iomap_base : 16;    /* i/o bitmap base address */     } __attribute__((packed)) TSS;   #endif