UsersystemLib Module

Functions
s32	sceKernelCpuSuspendIntr (void)
void	sceKernelCpuResumeIntr (s32 intr)
void	sceKernelCpuResumeIntrWithSync (s32 intr)
s32	sceKernelIsCpuIntrSuspended (s32 intr)
s32	sceKernelIsCpuIntrEnable (void)
s32	sub_00000208 (s32 dlId, void *stall)
s32	sceGe_lazy_31129B95 (s32 dlId, void *stall)
s32	sceKernelGetThreadId (void)
s32	sceKernelCheckThreadStack (void)
void *	sceKernelGetTlsAddr (SceUID uid)
s32	sceKernelTryLockLwMutex (SceLwMutex *mutex, s32 count)
s32	sceKernelTryLockLwMutex_600 (SceLwMutex *mutex, s32 count)
s32	sceKernelLockLwMutexCB (SceLwMutex *mutex, s32 count)
s32	sceKernelLockLwMutex (SceLwMutex *mutex, s32 count)
s32	sceKernelUnlockLwMutex (SceLwMutex *mutex, s32 count)
s32	Kernel_Library_3AD10D4D (SceLwMutex *mutex)
s32	sceKernelReferLwMutexStatus (SceLwMutex *mutex, u32 *addr)
void *	sceKernelMemcpy (void *dst, const void *src, SceSize size)
void *	sceKernelMemset (void *dst, s8 val, SceSize size)

---

Detailed Description

Author:

geecko

Version:

6.60

The usersystemlib.prx module RE'ing.

---

Function Documentation

s32 sceKernelCpuSuspendIntr

(

void

)

Suspends all interrupts.

Returns:

Current state of the interrupt controller.

void sceKernelCpuResumeIntr

(

s32

intr

)

Resumes all interrupts.

Parameters:

intr	A state returned by sceKernelCpuSuspendIntr().

void sceKernelCpuResumeIntrWithSync

(

s32

intr

)

Resumes all interrupts, with synchronization.

Parameters:

intr	A state returned by sceKernelCpuSuspendIntr().

s32 sceKernelIsCpuIntrSuspended

(

s32

intr

)

Checks if interrupts are suspended.

Parameters:

intr	A state returned by sceKernelCpuSuspendIntr().

Returns:

1 if the state indicates that interrupts are suspended, otherwise 0.

s32 sceKernelIsCpuIntrEnable

(

void

)

Checks if interrupts are enabled.

Returns:

1 if interrupts are enabled, otherwise 0.

s32 sub_00000208	(	s32	dlId,
		void *	stall
	)

Calls sceGeListUpdateStallAddr.

This is NOT an exported function because it is only used by sceGe_lazy_31129B95(). Its syscall instruction is patched at runtime by the GE module.

s32 sceGe_lazy_31129B95	(	s32	dlId,
		void *	stall
	)

Updates the stall address.

Calls sceGeListUpdateStallAddr with additional checks, limiting its call once out of 64 times. This function is only used by 'Genso Suikoden I & II'.

Parameters:

dlId	The ID of the display list which stall address will be modified.
stall	A new stall address.

Returns:

SCE_ERROR_OK on success, otherwise <0 on error.

s32 sceKernelGetThreadId

(

void

)

Gets the current thread ID.

Returns:

The current thread ID, otherwise <0 on error.

s32 sceKernelCheckThreadStack

(

void

)

Checks how much stack space is left for the current thread.

Returns:

The current thread's stack space available, otherwise <0 on error.

void* sceKernelGetTlsAddr

(

SceUID

uid

)

Gets a tls address.

Parameters:

uid	Unique tls identifier.

Returns:

A pointer, otherwise NULL on error.

s32 sceKernelTryLockLwMutex	(	SceLwMutex *	mutex,
		s32	count
	)

Tries to lock a lightweight mutex.

This function is non-blocking. If the mutex is flagged as recursive, count can be >1. For more information, see http://linux.die.net/man/3/pthread_mutex_trylock

Parameters:

mutex	Pointer to a lightweight mutex structure.
count	The lock counter increment.

Returns:

SCE_ERROR_OK on success, otherwise SCE_ERROR_KERNEL_LWMUTEX_LOCKED on error.

s32 sceKernelTryLockLwMutex_600	(	SceLwMutex *	mutex,
		s32	count
	)

Tries to lock a lightweight mutex (6.xx version).

This function is non-blocking. It could return SCE_ERROR_KERNEL_LWMUTEX_LOCKED. Unlike sceKernelTryLockLwMutex(), the error codes are more informative. If the mutex is flagged as recursive, count can be >1. For more information, see http://linux.die.net/man/3/pthread_mutex_trylock

Parameters:

mutex	Pointer to a lightweight mutex structure.
count	The lock counter increment.

Returns:

SCE_ERROR_OK on success, otherwise <0 on error.

s32 sceKernelLockLwMutexCB	(	SceLwMutex *	mutex,
		s32	count
	)

Locks a lightweight mutex (callback).

This function can be blocking if the mutex is already locked. If the mutex is flagged as recursive, count can be >1. For more information, see http://linux.die.net/man/3/pthread_mutex_lock

Parameters:

mutex	Pointer to a lightweight mutex structure.
count	The lock counter increment.

Returns:

SCE_ERROR_OK on success, otherwise <0 on error.

s32 sceKernelLockLwMutex	(	SceLwMutex *	mutex,
		s32	count
	)

Locks a lightweight mutex.

This function can be blocking if the mutex is already locked. If the mutex is flagged as recursive, count can be >1. For more information, see http://linux.die.net/man/3/pthread_mutex_lock

Parameters:

mutex	Pointer to a lightweight mutex structure.
count	The lock counter increment.

Returns:

SCE_ERROR_OK on success, otherwise <0 on error.

s32 sceKernelUnlockLwMutex	(	SceLwMutex *	mutex,
		s32	count
	)

Unlocks a lightweight mutex.

This function is non-blocking. If the mutex is flagged as recursive, count can be >1. For more information, see http://linux.die.net/man/3/pthread_mutex_unlock

Parameters:

mutex	Pointer to a lightweight mutex structure.
count	The lock counter decrement.

Returns:

SCE_ERROR_OK on success, otherwise <0 on error.

s32 Kernel_Library_3AD10D4D

(

SceLwMutex *

mutex

)

Gets the lock count of a lightweight mutex.

Parameters:

mutex

Pointer to a lightweight mutex structure.

Returns:

The mutex's lock count, otherwise <0 on error.

s32 sceKernelReferLwMutexStatus	(	SceLwMutex *	mutex,
		u32 *	addr
	)

Refers the lightweight mutex's status.

Parameters:

mutex	Pointer to a lightweight mutex structure.
addr	Unknown.

Returns:

Unknown, may be SCE_ERROR_OK on success and <0 on error.

void* sceKernelMemcpy	(	void *	dst,
		const void *	src,
		SceSize	size
	)

Copies a block of memory.

See http://www.cplusplus.com/reference/cstring/memcpy/

Parameters:

dst	Pointer to the memory block where the content will be copied.
src	Pointer to the data source.
size	Number of bytes to copy.

Returns:

Value of dst.

void* sceKernelMemset	(	void *	dst,
		s8	val,
		SceSize	size
	)

Fills a block of memory.

See http://www.cplusplus.com/reference/cstring/memset/

Parameters:

dst	Pointer to the memory block to fill.
val	Value to be set.
size	Number of bytes to be set.

Returns:

Value of dst.