How Win32 & Linux implement System Call
来源：互联网 发布：大理电视台网络直播 编辑：程序博客网 时间：2024/05/16 10:21
Through the Linux source, we know that Linux implements system call by a soft interrupt (0x80) (at least the version 0.11). With OllyDbg's help, I found that Windows uses call gate to make system call work. Please look at the disassmebled info of the printf call:
004012BA |. C70424 0030400>MOV DWORD PTR SS:[ESP],StreamBu.00403000 ; |ASCII "Hello"
004012C1 |. E8 3A050000 CALL <JMP.&msvcrt.printf> ; /printf
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