segment.h File Reference

l4f specific fs/gs manipulation More...

#include <l4/sys/compiler.h>

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Functions
long	fiasco_amd64_set_fs (l4_cap_idx_t thread, l4_umword_t base, l4_utcb_t *utcb)
	Set the base address for the FS segment.
long	fiasco_amd64_set_segment_base (l4_cap_idx_t thread, enum L4_sys_segment segr, l4_umword_t base, l4_utcb_t *utcb)
	Set the base address for a segment.
long	fiasco_gdt_set (l4_cap_idx_t thread, void *desc, unsigned int size, unsigned int entry_number_start, l4_utcb_t *utcb)
	Set GDT segment descriptors.

Detailed Description

l4f specific fs/gs manipulation

Definition in file segment.h.

Function Documentation

fiasco_amd64_set_fs()

long fiasco_amd64_set_fs ( l4_cap_idx_t  thread, l4_umword_t  base, l4_utcb_t *  utcb  )

inline

Set the base address for the FS segment.

Parameters

thread	Thread for which the FS base address shall be modified.
base	Base address.
utcb	UTCB to be used for this operation, shall be the UTCB of the calling thread. See l4_utcb.

Return values

L4_EOK	Success.
-L4_EINVAL	Invalid base address (base).
-L4_ENOSYS	Operation not supported with current kernel configuration.

Note

Calling this function is equivalent to calling fiasco_amd64_set_segment_base(thread, L4_AMD64_SEGMENT_FS, base, utcb).

Definition at line 35 of file segment.h.

References L4_AMD64_SEGMENT_FS, l4_ipc_call(), L4_IPC_NEVER, l4_msgtag(), L4_PROTO_THREAD, L4_THREAD_AMD64_SET_SEGMENT_BASE_OP, and l4_msg_regs_t::mr.

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fiasco_amd64_set_segment_base()

long fiasco_amd64_set_segment_base ( l4_cap_idx_t  thread, enum L4_sys_segment  segr, l4_umword_t  base, l4_utcb_t *  utcb  )

inline

Set the base address for a segment.

Parameters

thread	Thread for which the base address of the selected segment shall be modified.
segr	Segment to modify (one of L4_sys_segment).
base	Base address.
utcb	UTCB to be used for this operation, shall be the UTCB of the calling thread. See l4_utcb.

Return values

L4_EOK	Success.
-L4_EINVAL	Invalid segment (segr) or base address (base).
-L4_ENOSYS	Operation not supported with current kernel configuration.

Definition at line 43 of file segment.h.

References l4_ipc_call(), L4_IPC_NEVER, l4_msgtag(), L4_PROTO_THREAD, L4_THREAD_AMD64_SET_SEGMENT_BASE_OP, and l4_msg_regs_t::mr.

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