i386.h File Reference

Intel I386 CPU Dependent Source. More...

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Macros
#define	I386_HAS_FPU   1
#define	I386_HAS_BSWAP   1
#define	CPU_NAME   "Intel i386"
#define	get_cs()   i386_get_cs()
#define	get_ds()   i386_get_ds()
#define	get_es()   i386_get_es()
#define	get_ss()   i386_get_ss()
#define	get_fs()   i386_get_fs()
#define	get_gs()   i386_get_gs()
#define	CPU_swap_u32(_value)   i386_swap_u32( _value )
#define	CPU_swap_u16(_value)   i386_swap_u16( _value )
#define	outport_byte(_port, _value)   i386_outport_byte( _port, _value )
#define	outport_word(_port, _value)   i386_outport_word( _port, _value )
#define	outport_long(_port, _value)   i386_outport_long( _port, _value )
#define	inport_byte(_port, _value)   i386_inport_byte( _port, _value )
#define	inport_word(_port, _value)   i386_inport_word( _port, _value )
#define	inport_long(_port, _value)   i386_inport_long( _port, _value )

Functions
void *	i386_Logical_to_physical (unsigned short segment, void *address)
void *	i386_Physical_to_logical (unsigned short segment, void *address)
RTEMS_INLINE_ROUTINE void *	i386_Real_to_physical (uint16_t segment, uint16_t offset)
	Converts real mode pointer {segment, offset} to physical address. More...
int	i386_Physical_to_real (void *address, uint16_t *segment, uint16_t *offset)
	Retreives real mode pointer elements {segmnet, offset} from physical address. More...

Detailed Description

Intel I386 CPU Dependent Source.

This include file contains information pertaining to the Intel i386 processor.

Function Documentation

i386_Physical_to_real()

int i386_Physical_to_real	(	void *	address,
		uint16_t *	segment,
		uint16_t *	offset
	)

Retreives real mode pointer elements {segmnet, offset} from physical address.

i386_Physical_to_real Function returns the highest segment (base) address possible. Example: input address - 0x4B3A2 output segment - 0x4B3A offset - 0x2 input address - 0x10F12E output segment - 0xFFFF offset - 0xF13E

Parameters

[in]	address	address to be converted, must be less than 0x10FFEF
[out]	segment	segment computed from address
[out]	offset	offset computed from address

Return values

0	address not convertible
1	segment and offset extracted

Referenced by i386_Real_to_physical().

i386_Real_to_physical()

RTEMS_INLINE_ROUTINE void* i386_Real_to_physical	(	uint16_t	segment,
		uint16_t	offset
	)

Converts real mode pointer {segment, offset} to physical address.

i386_Real_to_physical

Parameters

[in]	segment	used with offset to compute physical address
[in]	offset	used with segment to compute physical address

Return values

physical

address

References i386_Physical_to_real().