segment descriptor造句
例句與造句
- This default ldt segment descriptor is stored in the gdt
這個默認ldt段描述符存儲在gdt中。 - By default it contains a null segment descriptor
默認情況下,其中會包含一個空的段描述符。 - The corresponding segment descriptor stored in the gdt has following values
存儲在gdt中的對應段描述符的值如下: - Each segment descriptor is eight bytes long and represents a single segment in memory
每個段描述符長8個字節(jié),表示內存中的一個段。 - A 13 - bit index that identifies the corresponding segment descriptor entry contained in the gdt or ldt
一個13位的索引,用來標識gdt或ldt中包含的對應段描述符條目 - It's difficult to find segment descriptor in a sentence. 用segment descriptor造句挺難的
- Each time a segment selector is loaded on to segment registers , the corresponding segment descriptor is loaded from memory into a matching non - programmable cpu register
每次將段選擇器加載到段寄存器中時,對應的段描述符都會從內存加載到相匹配的不可編程cpu寄存器中。 - Since a segment descriptor is eight bytes long , its relative address inside the gdt or ldt is obtained by multiplying the most significant 13 bits of segment selector by 8
由于一個段描述符的大小是8個字節(jié),因此它在gdt或ldt中的相對地址可以這樣計算:段選擇器的高13位乘以8 。 - For example , if the gdt is stored at address 0x00020000 and index specified by segment selector is 2 , then the address of corresponding segment descriptor is equal to 0x00020000
例如,如果gdt存儲在地址0x00020000處,而段選擇器的index域是2 ,那么對應的段描述符的地址就等于( 2 * 8 ) + 0x00020000 。 - The ti table indicator flag that specifies whether the segment descriptor is included in gdt if the value is 0 ; if the value is 1 , then the segment descriptor is included in the ldt
Ti ( table indicator )標志指定段描述符是在gdt中還是在ldt中,如果該值是0 ,段描述符就在gdt中;如果該值是1 ,段描述符就在ldt中。 - The segment descriptor entry contains both a pointer to the first byte in the associated segment represented by the base field and a 20 - bit value the limit field which represents the size of the segment in memory
段描述符條目中包含一個指針和一個20位的值( limit字段) ,前者指向由base字段表示的相關段中的第一個字節(jié),后者表示內存中段的大小。 - As we saw earlier in the section on linux and segmentation , each segment descriptor uses same set of addresses for linear addressing , minimizing the need to use the segmentation unit to convert logical addresses to linear addresses
前面介紹linux分段模型時已提到,每個分段描述符都使用相同的地址集進行線性尋址,從而盡可能降低使用分段單元將邏輯地址轉換成線性地址的需要。