Utils Library

Data Structures
struct	SceKernelTimeval
	This struct is needed because tv_sec size is different from what newlib expect Newlib expects 64bits for seconds and PSP expects 32bits. More...
struct	_SceKernelUtilsMt19937Context
	Structure for holding a mersenne twister context. More...
struct	_SceKernelUtilsMd5Context
	Structure to hold the MD5 context. More...
struct	_SceKernelUtilsSha1Context
	Type to hold a sha1 context. More...

Typedefs
typedef struct SceKernelTimeval	SceKernelTimeval
	This struct is needed because tv_sec size is different from what newlib expect Newlib expects 64bits for seconds and PSP expects 32bits.
typedef struct _SceKernelUtilsMt19937Context	SceKernelUtilsMt19937Context
	Structure for holding a mersenne twister context.
typedef struct _SceKernelUtilsMd5Context	SceKernelUtilsMd5Context
	Structure to hold the MD5 context.
typedef struct _SceKernelUtilsSha1Context	SceKernelUtilsSha1Context
	Type to hold a sha1 context.

Functions
time_t	sceKernelLibcTime (time_t *t)
	Get the time in seconds since the epoc (1st Jan 1970)
clock_t	sceKernelLibcClock (void)
	Get the processor clock used since the start of the process.
int	sceKernelLibcGettimeofday (struct SceKernelTimeval *tp, struct timezone *tzp)
	Get the current time of time and time zone information.
void	sceKernelDcacheWritebackAll (void)
	Write back the data cache to memory.
void	sceKernelDcacheWritebackInvalidateAll (void)
	Write back and invalidate the data cache.
void	sceKernelDcacheWritebackRange (const void *p, unsigned int size)
	Write back a range of addresses from the data cache to memory.
void	sceKernelDcacheWritebackInvalidateRange (const void *p, unsigned int size)
	Write back and invalidate a range of addresses in the data cache.
void	sceKernelDcacheInvalidateRange (const void *p, unsigned int size)
	Invalidate a range of addresses in data cache.
void	sceKernelIcacheInvalidateAll (void)
	Invalidate the instruction cache.
void	sceKernelIcacheInvalidateRange (const void *p, unsigned int size)
	Invalidate a range of addresses in the instruction cache.
int	sceKernelUtilsMt19937Init (SceKernelUtilsMt19937Context *ctx, u32 seed)
	Function to initialise a mersenne twister context.
u32	sceKernelUtilsMt19937UInt (SceKernelUtilsMt19937Context *ctx)
	Function to return a new psuedo random number.
int	sceKernelUtilsMd5Digest (u8 *data, u32 size, u8 *digest)
	Function to perform an MD5 digest of a data block.
int	sceKernelUtilsMd5BlockInit (SceKernelUtilsMd5Context *ctx)
	Function to initialise a MD5 digest context.
int	sceKernelUtilsMd5BlockUpdate (SceKernelUtilsMd5Context *ctx, u8 *data, u32 size)
	Function to update the MD5 digest with a block of data.
int	sceKernelUtilsMd5BlockResult (SceKernelUtilsMd5Context *ctx, u8 *digest)
	Function to get the digest result of the MD5 hash.
int	sceKernelUtilsSha1Digest (u8 *data, u32 size, u8 *digest)
	Function to SHA1 hash a data block.
int	sceKernelUtilsSha1BlockInit (SceKernelUtilsSha1Context *ctx)
	Function to initialise a context for SHA1 hashing.
int	sceKernelUtilsSha1BlockUpdate (SceKernelUtilsSha1Context *ctx, u8 *data, u32 size)
	Function to update the current hash.
int	sceKernelUtilsSha1BlockResult (SceKernelUtilsSha1Context *ctx, u8 *digest)
	Function to get the result of the SHA1 hash.

Detailed Description

Typedef Documentation

SceKernelTimeval

typedef struct SceKernelTimeval SceKernelTimeval

This struct is needed because tv_sec size is different from what newlib expect Newlib expects 64bits for seconds and PSP expects 32bits.

SceKernelUtilsMd5Context

typedef struct _SceKernelUtilsMd5Context SceKernelUtilsMd5Context

Structure to hold the MD5 context.

SceKernelUtilsMt19937Context

typedef struct _SceKernelUtilsMt19937Context SceKernelUtilsMt19937Context

Structure for holding a mersenne twister context.

SceKernelUtilsSha1Context

typedef struct _SceKernelUtilsSha1Context SceKernelUtilsSha1Context

Type to hold a sha1 context.

Function Documentation

sceKernelDcacheInvalidateRange()

void sceKernelDcacheInvalidateRange	(	const void *	p,
		unsigned int	size
	)

Invalidate a range of addresses in data cache.

sceKernelDcacheWritebackAll()

void sceKernelDcacheWritebackAll

(

void

)

Write back the data cache to memory.

Referenced by pspSdkFixupImports().

sceKernelDcacheWritebackInvalidateAll()

void sceKernelDcacheWritebackInvalidateAll

(

void

)

Write back and invalidate the data cache.

sceKernelDcacheWritebackInvalidateRange()

void sceKernelDcacheWritebackInvalidateRange	(	const void *	p,
		unsigned int	size
	)

Write back and invalidate a range of addresses in the data cache.

sceKernelDcacheWritebackRange()

void sceKernelDcacheWritebackRange	(	const void *	p,
		unsigned int	size
	)

Write back a range of addresses from the data cache to memory.

sceKernelIcacheInvalidateAll()

void sceKernelIcacheInvalidateAll

(

void

)

Invalidate the instruction cache.

sceKernelIcacheInvalidateRange()

void sceKernelIcacheInvalidateRange	(	const void *	p,
		unsigned int	size
	)

Invalidate a range of addresses in the instruction cache.

sceKernelLibcClock()

clock_t sceKernelLibcClock

(

void

)

Get the processor clock used since the start of the process.

sceKernelLibcGettimeofday()

int sceKernelLibcGettimeofday	(	struct SceKernelTimeval *	tp,
		struct timezone *	tzp
	)

Get the current time of time and time zone information.

sceKernelLibcTime()

time_t sceKernelLibcTime

(

time_t *

t

)

Get the time in seconds since the epoc (1st Jan 1970)

sceKernelUtilsMd5BlockInit()

int sceKernelUtilsMd5BlockInit

(

SceKernelUtilsMd5Context *

ctx

)

Function to initialise a MD5 digest context.

Parameters

ctx	- A context block to initialise

Returns

< 0 on error.

Example:

SceKernelUtilsMd5Context ctx;
u8 digest[16];
sceKernelUtilsMd5BlockInit(&ctx);
sceKernelUtilsMd5BlockUpdate(&ctx, (u8*) "Hello", 5);
sceKernelUtilsMd5BlockResult(&ctx, digest);

sceKernelUtilsMd5BlockResult()

int sceKernelUtilsMd5BlockResult	(	SceKernelUtilsMd5Context *	ctx,
		u8 *	digest
	)

Function to get the digest result of the MD5 hash.

Parameters

ctx	- A filled in context block.
digest	- A 16 byte array to hold the digest.

Returns

< 0 on error.

sceKernelUtilsMd5BlockUpdate()

int sceKernelUtilsMd5BlockUpdate	(	SceKernelUtilsMd5Context *	ctx,
		u8 *	data,
		u32	size
	)

Function to update the MD5 digest with a block of data.

Parameters

ctx	- A filled in context block.
data	- The data block to hash.
size	- The size of the data to hash

Returns

< 0 on error.

sceKernelUtilsMd5Digest()

int sceKernelUtilsMd5Digest	(	u8 *	data,
		u32	size,
		u8 *	digest
	)

Function to perform an MD5 digest of a data block.

Parameters

data	- Pointer to a data block to make a digest of.
size	- Size of the data block.
digest	- Pointer to a 16byte buffer to store the resulting digest

Returns

< 0 on error.

sceKernelUtilsMt19937Init()

int sceKernelUtilsMt19937Init	(	SceKernelUtilsMt19937Context *	ctx,
		u32	seed
	)

Function to initialise a mersenne twister context.

Parameters

ctx	- Pointer to a context
seed	- A seed for the random function.

Example:

SceKernelUtilsMt19937Context ctx;
sceKernelUtilsMt19937Init(&ctx, time(NULL));
u23 rand_val = sceKernelUtilsMt19937UInt(&ctx);

Returns

< 0 on error.

sceKernelUtilsMt19937UInt()

u32 sceKernelUtilsMt19937UInt

(

SceKernelUtilsMt19937Context *

ctx

)

Function to return a new psuedo random number.

Parameters

ctx	- Pointer to a pre-initialised context.

Returns

A pseudo random number (between 0 and MAX_INT).

sceKernelUtilsSha1BlockInit()

int sceKernelUtilsSha1BlockInit

(

SceKernelUtilsSha1Context *

ctx

)

Function to initialise a context for SHA1 hashing.

Parameters

ctx	- Pointer to a context.

Returns

< 0 on error.

Example:

SceKernelUtilsSha1Context ctx;
u8 digest[20];
sceKernelUtilsSha1BlockInit(&ctx);
sceKernelUtilsSha1BlockUpdate(&ctx, (u8*) "Hello", 5);
sceKernelUtilsSha1BlockResult(&ctx, digest);

sceKernelUtilsSha1BlockResult()

int sceKernelUtilsSha1BlockResult	(	SceKernelUtilsSha1Context *	ctx,
		u8 *	digest
	)

Function to get the result of the SHA1 hash.

Parameters

ctx	- Pointer to a prefilled context.
digest	- A pointer to a 20 byte array to contain the digest.

Returns

< 0 on error.

sceKernelUtilsSha1BlockUpdate()

int sceKernelUtilsSha1BlockUpdate	(	SceKernelUtilsSha1Context *	ctx,
		u8 *	data,
		u32	size
	)

Function to update the current hash.

Parameters

ctx	- Pointer to a prefilled context.
data	- The data block to hash.
size	- The size of the data block

Returns

< 0 on error.

sceKernelUtilsSha1Digest()

int sceKernelUtilsSha1Digest	(	u8 *	data,
		u32	size,
		u8 *	digest
	)

Function to SHA1 hash a data block.

Parameters

data	- The data to hash.
size	- The size of the data.
digest	- Pointer to a 20 byte array for storing the digest

Returns

< 0 on error.