System calls: Difference between revisions

Latest revision as of 11:27, 29 July 2015

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-PS4 kernel is based on FreeBSD 9.0; a list of FreeBSD 9.0 system calls can be found [http://fxr.watson.org/fxr/source/kern/syscalls.master?v=FREEBSD9 here].
+#REDIRECT [[Syscalls]]
-Compatibility system calls, and some others, have been disabled.
-The first custom Sony system call comes immediately after the last FreeBSD system call, wait6, and is number 533.
-The final custom Sony system call is 617.
-Calling any system calls higher than 617 gives the same result as calling a compatibility or unimplemented system call, "There is not enough free system memory" error.
-Of these 85 (617 - 532), 9 always return 0x4e, ENOSYS, leaving us with just 76 which are usable (the disabled 9 may only be callable from development units).
-'''Functions of custom Sony system calls'''
-Known calls include those relating to:
-# Modules
-# Memory
-# Sandboxing
-# Semaphores
-Other potential calls could be for:
-# Mutexes
-Other operations, such as file IO and networking are handled through regular FreeBSD system calls.