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typedef struct {
unsigned int base24_31:8; /* 8 */
unsigned int g:1; /* granularity01 4KB */
unsigned int d_b:1; /* default operation size0=161=32 */
unsigned int unused:1; /* 0 *
unsigned int avl:1; /* avalaible */
unsigned int seg_limit_16_19:4; /* 4 *
unsigned int p:1; /* segment present 0 */
unsigned int dpl:2; /* Descriptor privilege level */
unsigned int s:1; /*10 */
unsigned int type:4; /* S */
unsigned int base_0_23:24; /* 24 */
unsigned int seg_limit_0_15:16; /* 16 */
}A;
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