pspfpu.c File Reference

#include "pspfpu.h"

Include dependency graph for pspfpu.c:

Functions
uint32_t	pspfpu_get_fcr31 (void)
	Get the current value of the control/status register.
void	pspfpu_set_fcr31 (uint32_t var)
	Set the current value of the control/status register.
void	pspfpu_set_roundmode (enum FpuRoundMode mode)
	Set the current round mode.
enum FpuRoundMode	pspfpu_get_roundmode (void)
	Get the current round mode.
uint32_t	pspfpu_get_flags (void)
	Get the exception flags (set when an exception occurs but the actual exception bit is not enabled)
void	pspfpu_clear_flags (uint32_t clear)
	Clear the flags bits.
uint32_t	pspfpu_get_enable (void)
	Get the exception enable flags.
void	pspfpu_set_enable (uint32_t enable)
	Set the enable flags bits.
uint32_t	pspfpu_get_cause (void)
	Get the cause bits (only useful if you installed your own exception handler)
void	pspfpu_clear_cause (uint32_t clear)
	Clear the cause bits.
uint32_t	pspfpu_get_fs (void)
	Get the current value of the FS bit (if FS is 0 then an exception occurs with denormalized values, if 1 then they are rewritten as 0.
void	pspfpu_set_fs (uint32_t fs)
	Set the FS bit.
uint32_t	pspfpu_get_condbits (void)
	Get the condition flags (8 bits)
void	pspfpu_clear_condbits (uint32_t clear)
	Clear the condition bits.

Function Documentation

void pspfpu_clear_cause

(

uint32_t

clear

)

Clear the cause bits.

Parameters

clear

- Bitmask of the bits to clear, one or more of FpuExceptions

References FPU_CAUSE_POS, pspfpu_get_fcr31(), pspfpu_set_fcr31(), and uint32_t.

void pspfpu_clear_condbits

(

uint32_t

clear

)

Clear the condition bits.

Parameters

clear

- Bitmask of the bits to clear

References FPU_CC0_POS, FPU_CC17_POS, pspfpu_get_fcr31(), pspfpu_set_fcr31(), and uint32_t.

void pspfpu_clear_flags

(

uint32_t

clear

)

Clear the flags bits.

Parameters

clear

- Bitmask of the bits to clear, one or more of FpuExceptions

References FPU_FLAGS_POS, pspfpu_get_fcr31(), pspfpu_set_fcr31(), and uint32_t.

uint32_t pspfpu_get_cause

(

void

)

Get the cause bits (only useful if you installed your own exception handler)

Returns

Bitmask of flags, zero or more of FpuExceptions

References FPU_CAUSE_MASK, FPU_CAUSE_POS, pspfpu_get_fcr31(), and uint32_t.

uint32_t pspfpu_get_condbits

(

void

)

Get the condition flags (8 bits)

Returns

The current condition flags

References FPU_CC0_MASK, FPU_CC0_POS, FPU_CC17_MASK, FPU_CC17_POS, pspfpu_get_fcr31(), and uint32_t.

uint32_t pspfpu_get_enable

(

void

)

Get the exception enable flags.

Returns

Bitmask of the flags, zero or more of FpuExceptions

References FPU_ENABLE_MASK, FPU_ENABLE_POS, pspfpu_get_fcr31(), and uint32_t.

uint32_t pspfpu_get_fcr31

(

void

)

Get the current value of the control/status register.

Returns

The value of the control/status register

References uint32_t.

Referenced by pspfpu_clear_cause(), pspfpu_clear_condbits(), pspfpu_clear_flags(), pspfpu_get_cause(), pspfpu_get_condbits(), pspfpu_get_enable(), pspfpu_get_flags(), pspfpu_get_fs(), pspfpu_get_roundmode(), pspfpu_set_enable(), pspfpu_set_fs(), and pspfpu_set_roundmode().

uint32_t pspfpu_get_flags

(

void

)

Get the exception flags (set when an exception occurs but the actual exception bit is not enabled)

Returns

Bitmask of the flags, zero or more of FpuExceptions

References FPU_FLAGS_MASK, FPU_FLAGS_POS, pspfpu_get_fcr31(), and uint32_t.

uint32_t pspfpu_get_fs

(

void

)

Get the current value of the FS bit (if FS is 0 then an exception occurs with denormalized values, if 1 then they are rewritten as 0.

Returns

The current state of the FS bit (0 or 1)

References FPU_FS_MASK, FPU_FS_POS, pspfpu_get_fcr31(), and uint32_t.

enum FpuRoundMode pspfpu_get_roundmode

(

void

)

Get the current round mode.

Returns

The round mode, one of FpuRoundMode

References FPU_RM_MASK, and pspfpu_get_fcr31().

void pspfpu_set_enable

(

uint32_t

enable

)

Set the enable flags bits.

Parameters

enable

- Bitmask of exceptions to enable, zero or more of FpuExceptions

References FPU_ENABLE_MASK, FPU_ENABLE_POS, pspfpu_get_fcr31(), pspfpu_set_fcr31(), and uint32_t.

void pspfpu_set_fcr31

(

uint32_t

var

)

Set the current value of the control/status register.

Parameters

var	- The value to set.

Referenced by pspfpu_clear_cause(), pspfpu_clear_condbits(), pspfpu_clear_flags(), pspfpu_set_enable(), pspfpu_set_fs(), and pspfpu_set_roundmode().

void pspfpu_set_fs

(

uint32_t

fs

)

Set the FS bit.

Parameters

fs	- 0 or 1 to unset or set fs

References FPU_FS_MASK, FPU_FS_POS, pspfpu_get_fcr31(), pspfpu_set_fcr31(), and uint32_t.

void pspfpu_set_roundmode

(

enum FpuRoundMode

mode

)

Set the current round mode.

Parameters

mode	- The rounding mode to set, one of FpuRoundMode

References FPU_RM_MASK, pspfpu_get_fcr31(), pspfpu_set_fcr31(), and uint32_t.