pthread_rwlockattr_settype_np stored any type and returned 0. The console's answer to a type outside 0 to 2 is unknown, and shadPS4 returns EINVAL once the stored type is above 2, so such a type now goes through NotImplemented_nid_no_patch. Types 0 to 2 are stored but not applied, so the debt entry moves to the silent stubs.
The SCE name moves from a libkernel_sys stub to libkernel. Kinds
MutexType::ErrorCheck (1) to MutexType::Adaptive (4) are the mutex
types FreeBSD 11 libthr's pthread_mutexattr_setkind_np stores, and are
set through scePthreadMutexattrSettype, which maps the same values onto
those types. Other kinds and a null or uninitialized attribute throw, as
their console answer is not known.
guest_kernel_sys_pthread_np_kind round-trips kinds 2, 3, 4 and 1
through pthread_mutexattr_gettype, checks that kind 1 makes a second
lock return EDEADLK and kind 2 lets it succeed, and checks the throws
for kinds 0, 5 and -1 (the type unchanged) and for a destroyed or null
attribute.
The POSIX name moves from a libkernel_sys stub to libkernel and stores the
type through its SCE twin scePthreadRwlockattrSettype, converting the
result as the other POSIX rwlock calls do.
guest_kernel_sys_pthread_np_rwlockattr checks types 0, 1 and 2 through
both names, a rwlock built from the attribute, and the throws for a
destroyed or null attribute.
Yunus Shaikh