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Rev 1816 Rev 1829
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    unsigned granularity : 1;
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    unsigned granularity : 1;
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    unsigned base_24_31: 8;
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    unsigned base_24_31: 8;
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} __attribute__ ((packed));
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} __attribute__ ((packed));
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typedef struct descriptor  descriptor_t;
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typedef struct descriptor  descriptor_t;
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struct idescriptor {
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    unsigned offset_0_15: 16;
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    unsigned selector: 16;
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    unsigned unused: 8;
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    unsigned access: 8;
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    unsigned offset_16_31: 16;
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} __attribute__ ((packed));
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typedef struct idescriptor idescriptor_t;
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struct tss {
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struct tss {
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    uint16_t link;
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    uint16_t link;
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    unsigned : 16;
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    unsigned : 16;
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    uint32_t esp0;
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    uint32_t esp0;
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    uint16_t ss0;
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    uint16_t ss0;
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extern void pm_init(void);
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extern void pm_init(void);
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extern void gdt_setbase(descriptor_t *d, uintptr_t base);
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extern void gdt_setbase(descriptor_t *d, uintptr_t base);
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extern void gdt_setlimit(descriptor_t *d, uint32_t limit);
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extern void gdt_setlimit(descriptor_t *d, uint32_t limit);
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extern void idt_init(void);
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extern void traps_init(void);
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extern void idt_setoffset(idescriptor_t *d, uintptr_t offset);
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extern void tss_initialize(tss_t *t);
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extern void tss_initialize(tss_t *t);
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extern void set_tls_desc(uintptr_t tls);
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extern void set_tls_desc(uintptr_t tls);
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#endif /* __ASM__ */
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#endif /* __ASM__ */