Description: SYSENETER is a compilation of instructions, it is in the Pentium ® II processor or above processor provided as part of a fast system calls. SYSENTER/SYSEXIT This specialized instruction
For fast calls. Before this is achieved using INT 0x2E. INT 0x2E in the system call when the work required to switch the stack. The Interrupt/Exception Handler s
Calls through call/trap/task to implement this type of gate, and in this way would be to switch the stack and system stack address and other information provided by the TSS. This approach may lead to memory access times
Q (to obtain the switching information), therefore, start from the PentiumII, IA-32 introduces a new command: SYSENTER/SYSEXIT. With these two instructions,
From the user level to privilege level of the stack and instruction pointer conversion, achieved through the instructions, and the need to switch to the new stack address, and the corresponding bits in the first instruction of the process
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6）SYSENTER hook.doc
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