參考資訊：
https://chromium.googlesource.com/chromiumos/docs/+/HEAD/constants/syscalls.md
https://reverseengineering.stackexchange.com/questions/2869/how-to-use-sysenter-under-linux
main.s
.global _start
.data
msg: .ascii "hello, world!\n"
len = . - msg
.text
_start:
push %ebp
mov %esp, %ebp
mov $4, %eax
mov $1, %ebx
mov $msg, %ecx
mov $len, %edx
push $final
push %ecx
push %edx
push %ebp
mov %esp, %ebp
sysenter
final:
mov $1, %eax
mov $0, %ebx
push $final
push %ecx
push %edx
push %ebp
mov %esp, %ebp
sysenter
| NR | syscall name | eax | arg0(ebx) | arg1(ecx) | arg2(edx) |
|---|---|---|---|---|---|
| 1 | exit | 1 | int error_code | ||
| 4 | write | 4 | unsigned int fd | const char *buf | size_t count |
編譯、執行
$ gcc -m32 main.s -o main -nostdlib
$ ./main
hello, world!
P.S. Debian x64環境測試