【專利核准公告】P98039A-一種快速系統呼叫之方法「FAST SYSTEM CALL METHOD」(已終止維護)
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專利國別 |
美國 |
發表日期 |
2017-06-28 09:41:09 |
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本校案號 |
P98039A |
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專利名稱 |
一種快速系統呼叫之方法「FAST SYSTEM CALL METHOD」 |
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發明人 |
羅習五、陳添福 |
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所屬院 |
工學院 |
提案單位 |
資訊工程學系暨研究所 |
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類型 |
發明 |
專利權人 |
國立中正大學 |
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申請號 |
11/505,347 |
申請日期 |
2006-08-17 |
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公開號 |
US 2008-0046725 A1 |
公開日期 |
2008-02-21 |
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證書號 |
US 8,132,002 B2 |
核准日期 |
2012-03-06 |
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國際分類號 |
G06F-021/00(2006.01) |
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專利權期間 |
2006.08.17~2026.08.17(延長1333天至2030.04.11) |
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專利摘要 |
A method of a fast system call is provided. First, a logical operation to compute a kernel service routine is used. Then the logical operation result is compared with ciphertext from a key register. At least one input for the logical operation is from the relevant information of the required kernel service routine. For example, the start address of the kernel service routine or the content of the start address of the kernel service routine, or combinations thereof. If the logical operation result equals to the ciphertext of the key register, a switch from a user mode to a kernel mode to read the kernel service routine is allowed. Otherwise, the central processing system executes a corresponding exceptional handler routine. Then the operating system terminates the mode switch request and reports an error to the operating system. |
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圖示 |
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