Local descriptor table (LDT) management. More...

Macros
#define	LDT_NENTRIES 512
	Number of entries in the statically-sized LDT.

Functions
void	ldt_init_disabled (dispatcher_handle_t handle)
	Initialise private (per-dispatcher) LDT.

errval_t	ldt_alloc_segment_disabled (dispatcher_handle_t handle, void segbase, uint16_t ret_selector)
	Allocate and fill a segment descriptor in the LDT. More...

errval_t	ldt_alloc_segment (void segbase, uint16_t ret_selector)
	enabled version of ldt_alloc_segment_disabled() More...

errval_t	ldt_free_segment_ondisp (dispatcher_handle_t handle, uint16_t selector)
	Free a previously-allocated segment on a specific dispatcher. More...

errval_t	ldt_free_segment (uint16_t selector)
	Free a previously-allocated segment on the current dispatcher. More...

errval_t	ldt_update_segment (uint16_t selector, void *segbase)
	Update the base address of a previously-allocated segment. More...

Detailed Description

Local descriptor table (LDT) management.

Function Documentation

Exposed for calls by special-case software that needs to play with segments.

errval_t ldt_alloc_segment_disabled	(	dispatcher_handle_t	handle,
		void *	segbase,
		uint16_t *	ret_selector
	)

Allocate and fill a segment descriptor in the LDT.

Parameters

handle	Dispatcher handle
segbase	Base of segment
ret_selector	On success, used to return selector for new segment

errval_t ldt_free_segment ( uint16_t selector )

Free a previously-allocated segment on the current dispatcher.

Parameters

selector Segment selector

errval_t ldt_free_segment_ondisp	(	dispatcher_handle_t	handle,
		uint16_t	selector
	)

Free a previously-allocated segment on a specific dispatcher.

Parameters

handle	Dispatcher handle
selector	Segment selector

Update the base address of a previously-allocated segment.

Parameters

selector	Segment selector
segbase	New base of segment