Merge pull request below#48 from below/AppleWarning

Add a warning about function call numbers

Author: below

README.md

@@ -73,6 +73,8 @@ To silence the warning, I insert `.align 4` (or `.p2align 2`), because Darwin li
 
 System calls in Linux and macOS have several differences due to the unique conventions of each system. Here are some key distinctions:
 * Function Number: The function numbers differ between the two systems, with Linux using 64 and macOS using 4. The table for Darwin (Apple) system calls can be found at this link: [Darwin System Calls](https://opensource.apple.com/source/xnu/xnu-7195.81.3/bsd/kern/syscalls.master.auto.html). Please note that this is a specific version (the most recent at the time of writing), and newer versions can be found [here](https://opensource.apple.com/source/xnu/).
+> [!CAUTION]
+> Darwin function numbers are considered private by Apple, and are subject to change. They are provided here for educational purposes only
 * Address for Storing Function Numbers: The address used for storing function numbers also varies. In Linux, it’s on X8, while in macOS, it’s on X16.
 * Interruption Call: The call for interruption is 0 in Linux, whereas it’s 0x80 on Apple Silicon.