Floating Point Unit (FPU)

Device designed to carry out operations on floating-point numbers. More...

Classes
struct	env87
	Environment information of floating point unit. More...
struct	fpacc87
	Contents of each floating point accumulator. More...
struct	save87
	Floating point context. More...
struct	envxmm
	Stores the XMM environment. More...
struct	xmmacc
	Contents of each SSE extended accumulator. More...
struct	savexmm
	Stores the XMM context. More...
union	savefpu
	Stores FPU registers details. More...

Typedefs
typedef struct env87	env87
	Environment information of floating point unit.
typedef struct fpacc87	fpacc87
	Contents of each floating point accumulator.
typedef struct save87	save87
	Floating point context.
typedef struct envxmm	envxmm
	Stores the XMM environment.
typedef struct xmmacc	xmmacc
	Contents of each SSE extended accumulator.
typedef struct savexmm	_syscall0 = _syscall0( (__aligned__(16)) )= _syscall1( (__aligned__(16)) )= _syscall2( (__aligned__(16)) )= _syscall3( (__aligned__(16)) )= savexmm
	Stores the XMM context.
typedef union savefpu	savefpu
	Stores FPU registers details.

Functions
void	switch_fpu (void)
	Called during a context switch to save the FPU registers status of the currently running thread.
void	unswitch_fpu (void)
	Called during a context switch to load the FPU registers status of the currently running thread inside the FPU.
int	fpu_install (void)
	Enable the FPU context handling. More...

Detailed Description

Device designed to carry out operations on floating-point numbers.

Function Documentation

fpu_install()

int fpu_install

(

void

)

Enable the FPU context handling.

Returns

0 if fails, 1 if succeed.