desc.h File Reference

#include <asm/desc_defs.h>
#include <asm/ldt.h>
#include <asm/mmu.h>
#include <linux/smp.h>
#include <linux/percpu.h>

Go to the source code of this file.

Data Structures
struct	gdt_page

Macros
#define	load_TR_desc()   native_load_tr_desc()
#define	load_gdt(dtr)   native_load_gdt(dtr)
#define	load_idt(dtr)   native_load_idt(dtr)
#define	load_tr(tr)   asm volatile("ltr %0"::"m" (tr))
#define	load_ldt(ldt)   asm volatile("lldt %0"::"m" (ldt))
#define	store_gdt(dtr)   native_store_gdt(dtr)
#define	store_idt(dtr)   native_store_idt(dtr)
#define	store_tr(tr)   (tr = native_store_tr())
#define	load_TLS(t, cpu)   native_load_tls(t, cpu)
#define	set_ldt   native_set_ldt
#define	write_ldt_entry(dt, entry, desc)   native_write_ldt_entry(dt, entry, desc)
#define	write_gdt_entry(dt, entry, desc, type)   native_write_gdt_entry(dt, entry, desc, type)
#define	write_idt_entry(dt, entry, g)   native_write_idt_entry(dt, entry, g)
#define	store_ldt(ldt)   asm("sldt %0" : "=m"(ldt))
#define	set_tss_desc(cpu, addr)   __set_tss_desc(cpu, GDT_ENTRY_TSS, addr)
#define	_LDT_empty(info)
#define	LDT_empty(info)   (_LDT_empty(info))

Functions
struct gdt_page	__attribute__ ((aligned(PAGE_SIZE)))
	DECLARE_PER_CPU_PAGE_ALIGNED (struct gdt_page, gdt_page)

Variables
struct desc_ptr	idt_descr
gate_desc	idt_table []
struct desc_ptr	nmi_idt_descr
gate_desc	nmi_idt_table []
struct desc_struct	gdt [GDT_ENTRIES]
int	first_system_vector
unsigned long	used_vectors []

Macro Definition Documentation

#define _LDT_empty

(

info

)

Value:

((info)->base_addr      == 0    &&  \
     (info)->limit          == 0    &&  \
     (info)->contents       == 0    &&  \
     (info)->read_exec_only     == 1    &&  \
     (info)->seg_32bit      == 0    &&  \
     (info)->limit_in_pages     == 0    &&  \
     (info)->seg_not_present    == 1    &&  \
     (info)->useable        == 0)

Definition at line 254 of file desc.h.

#define LDT_empty

(

info

)

(_LDT_empty(info))

Definition at line 267 of file desc.h.

#define load_gdt

(

dtr

)

native_load_gdt(dtr)

Definition at line 92 of file desc.h.

#define load_idt

(

dtr

)

native_load_idt(dtr)

Definition at line 93 of file desc.h.

#define load_ldt

(

ldt

)

asm volatile("lldt %0"::"m" (ldt))

Definition at line 95 of file desc.h.

#define load_TLS	(		t,
			cpu
	)		native_load_tls(t, cpu)

Definition at line 101 of file desc.h.

#define load_tr

(

tr

)

asm volatile("ltr %0"::"m" (tr))

Definition at line 94 of file desc.h.

#define load_TR_desc

(

)

native_load_tr_desc()

Definition at line 91 of file desc.h.

#define set_ldt   native_set_ldt

Definition at line 102 of file desc.h.

#define set_tss_desc	(		cpu,
			addr
	)		__set_tss_desc(cpu, GDT_ENTRY_TSS, addr)

Definition at line 193 of file desc.h.

#define store_gdt

(

dtr

)

native_store_gdt(dtr)

Definition at line 97 of file desc.h.

#define store_idt

(

dtr

)

native_store_idt(dtr)

Definition at line 98 of file desc.h.

#define store_ldt

(

ldt

)

asm("sldt %0" : "=m"(ldt))

Definition at line 117 of file desc.h.

#define store_tr

(

tr

)

(tr = native_store_tr())

Definition at line 99 of file desc.h.

#define write_gdt_entry	(		dt,
			entry,
			desc,
			type
	)		native_write_gdt_entry(dt, entry, desc, type)

Definition at line 105 of file desc.h.

#define write_idt_entry	(		dt,
			entry,
			g
	)		native_write_idt_entry(dt, entry, g)

Definition at line 106 of file desc.h.

#define write_ldt_entry	(		dt,
			entry,
			desc
	)		native_write_ldt_entry(dt, entry, desc)

Definition at line 104 of file desc.h.

Function Documentation

struct gdt_page __attribute__

(

(aligned(PAGE_SIZE))

)

DECLARE_PER_CPU_PAGE_ALIGNED	(	struct gdt_page	,
		gdt_page
	)

Variable Documentation

int first_system_vector

Definition at line 183 of file apic.c.

struct desc_struct gdt[GDT_ENTRIES]

Definition at line 45 of file desc.h.

struct desc_ptr idt_descr

gate_desc idt_table[]

struct desc_ptr nmi_idt_descr

gate_desc nmi_idt_table[]

unsigned long used_vectors[]