include/asm/desc.h

16 static inline void fill_ldt(struct desc_struct *desc, const struct user_desc *info)
18 	desc->limit0		= info->limit & 0x0ffff;
20 	desc->base0		= (info->base_addr & 0x0000ffff);
21 	desc->base1		= (info->base_addr & 0x00ff0000) >> 16;
23 	desc->type		= (info->read_exec_only ^ 1) << 1;
24 	desc->type	       |= info->contents << 2;
26 	desc->type	       |= 1;
28 	desc->s			= 1;
29 	desc->dpl		= 0x3;
30 	desc->p			= info->seg_not_present ^ 1;
31 	desc->limit1		= (info->limit & 0xf0000) >> 16;
32 	desc->avl		= info->useable;
33 	desc->d			= info->seg_32bit;
34 	desc->g			= info->limit_in_pages;
36 	desc->base2		= (info->base_addr & 0xff000000) >> 24;
41 	desc->l			= 0;
103 	const u32 *desc = ptr;
105 	return !(desc[0] | desc[1]);
123 #define write_ldt_entry(dt, entry, desc)	native_write_ldt_entry(dt, entry, desc)
124 #define write_gdt_entry(dt, entry, desc, type)	native_write_gdt_entry(dt, entry, desc, type)
143 static inline void native_write_ldt_entry(struct desc_struct *ldt, int entry, const void *desc)
145 	memcpy(&ldt[entry], desc, 8);
149 native_write_gdt_entry(struct desc_struct *gdt, int entry, const void *desc, int type)
159 	memcpy(&gdt[entry], desc, size);
165 	struct ldttss_desc *desc = d;
167 	memset(desc, 0, sizeof(*desc));
169 	desc->limit0		= (u16) size;
170 	desc->base0		= (u16) addr;
171 	desc->base1		= (addr >> 16) & 0xFF;
172 	desc->type		= type;
173 	desc->p			= 1;
174 	desc->limit1		= (size >> 16) & 0xF;
175 	desc->base2		= (addr >> 24) & 0xFF;
177 	desc->base3		= (u32) (addr >> 32);
383 static inline unsigned long get_desc_base(const struct desc_struct *desc)
385 	return (unsigned)(desc->base0 | ((desc->base1) << 16) | ((desc->base2) << 24));
388 static inline void set_desc_base(struct desc_struct *desc, unsigned long base)
390 	desc->base0 = base & 0xffff;
391 	desc->base1 = (base >> 16) & 0xff;
392 	desc->base2 = (base >> 24) & 0xff;
395 static inline unsigned long get_desc_limit(const struct desc_struct *desc)
397 	return desc->limit0 | (desc->limit1 << 16);
400 static inline void set_desc_limit(struct desc_struct *desc, unsigned long limit)
402 	desc->limit0 = limit & 0xffff;
403 	desc->limit1 = (limit >> 16) & 0xf;