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Rev 2089 Rev 4126
Line 43... Line 43...
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#define IDT_ITEMS 64
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#define IDT_ITEMS  64
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#define GDT_ITEMS 8
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#define GDT_ITEMS  8
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#define NULL_DES    0
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#define NULL_DES     0
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/* Warning: Do not reorder next items, unless you look into syscall.c!!! */
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/* Warning: Do not reorder the following items, unless you look into syscall.c! */
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#define KTEXT_DES   1
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#define KTEXT_DES    1
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#define KDATA_DES   2
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#define KDATA_DES    2
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#define UDATA_DES   3
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#define UDATA_DES    3
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#define UTEXT_DES   4
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#define UTEXT_DES    4
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#define KTEXT32_DES     5
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#define KTEXT32_DES  5
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/* EndOfWarning */
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/* End of warning */
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#define TSS_DES     6
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#define TSS_DES      6
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#ifdef CONFIG_FB
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#ifdef CONFIG_FB
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#define VESA_INIT_DES       8
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#define VESA_INIT_DES      8
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#define VESA_INIT_SEGMENT 0x8000
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#define VESA_INIT_SEGMENT  0x8000
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#undef GDT_ITEMS
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#undef GDT_ITEMS
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#define GDT_ITEMS 9
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#define GDT_ITEMS  9
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#endif /*CONFIG_FB*/
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#endif /* CONFIG_FB */
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#define gdtselector(des)    ((des) << 3)
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#define gdtselector(des)  ((des) << 3)
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#define idtselector(des)    ((des) << 4)
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#define idtselector(des)  ((des) << 4)
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#define PL_KERNEL   0
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#define PL_KERNEL  0
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#define PL_USER     3
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#define PL_USER    3
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#define AR_PRESENT  (1<<7)
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#define AR_PRESENT   ( 1 << 7)
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#define AR_DATA     (2<<3)
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#define AR_DATA       (2 << 3)
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#define AR_CODE     (3<<3)
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#define AR_CODE       (3 << 3)
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#define AR_WRITABLE (1<<1)
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#define AR_WRITABLE   (1 << 1)
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#define AR_READABLE     (1<<1)
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#define AR_READABLE   (1 << 1)
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#define AR_TSS      (0x9)
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#define AR_TSS        (0x09)
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#define AR_INTERRUPT    (0xe)
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#define AR_INTERRUPT  (0x0e)
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#define AR_TRAP         (0xf)
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#define AR_TRAP       (0x0f)
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#define DPL_KERNEL  (PL_KERNEL<<5)
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#define DPL_KERNEL  (PL_KERNEL << 5)
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#define DPL_USER    (PL_USER<<5)
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#define DPL_USER    (PL_USER << 5)
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#define TSS_BASIC_SIZE  104
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#define TSS_BASIC_SIZE  104
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#define IO_PORTS    (64*1024)
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#define IO_PORTS  (64 * 1024)
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#ifndef __ASM__
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#ifndef __ASM__
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struct descriptor {
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typedef struct {
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    unsigned limit_0_15: 16;
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    unsigned limit_0_15: 16;
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    unsigned base_0_15: 16;
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    unsigned base_0_15: 16;
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    unsigned base_16_23: 8;
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    unsigned base_16_23: 8;
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    unsigned access: 8;
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    unsigned access: 8;
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    unsigned limit_16_19: 4;
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    unsigned limit_16_19: 4;
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    unsigned available: 1;
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    unsigned available: 1;
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    unsigned longmode: 1;
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    unsigned longmode: 1;
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    unsigned special: 1;
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    unsigned special: 1;
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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)) descriptor_t;
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typedef struct descriptor descriptor_t;
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struct tss_descriptor {
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typedef struct {
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    unsigned limit_0_15: 16;
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    unsigned limit_0_15: 16;
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    unsigned base_0_15: 16;
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    unsigned base_0_15: 16;
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    unsigned base_16_23: 8;
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    unsigned base_16_23: 8;
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    unsigned type: 4;
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    unsigned type: 4;
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    unsigned : 1;
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    unsigned : 1;
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    unsigned : 2;
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    unsigned : 2;
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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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    unsigned base_32_63 : 32;
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    unsigned base_32_63 : 32;
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    unsigned  : 32;
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    unsigned  : 32;
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} __attribute__ ((packed));
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} __attribute__ ((packed)) tss_descriptor_t;
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typedef struct tss_descriptor tss_descriptor_t;
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struct idescriptor {
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typedef struct {
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    unsigned offset_0_15: 16;
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    unsigned offset_0_15: 16;
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    unsigned selector: 16;
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    unsigned selector: 16;
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    unsigned ist:3;
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    unsigned ist:3;
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    unsigned unused: 5;
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    unsigned unused: 5;
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    unsigned type: 5;
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    unsigned type: 5;
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    unsigned dpl: 2;
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    unsigned dpl: 2;
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    unsigned present : 1;
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    unsigned present : 1;
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    unsigned offset_16_31: 16;
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    unsigned offset_16_31: 16;
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    unsigned offset_32_63: 32;
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    unsigned offset_32_63: 32;
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    unsigned  : 32;
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    unsigned  : 32;
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} __attribute__ ((packed));
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} __attribute__ ((packed)) idescriptor_t;
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typedef struct idescriptor idescriptor_t;
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struct ptr_16_64 {
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typedef struct {
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    uint16_t limit;
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    uint16_t limit;
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    uint64_t base;
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    uint64_t base;
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} __attribute__ ((packed));
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} __attribute__ ((packed)) ptr_16_64_t;
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typedef struct ptr_16_64 ptr_16_64_t;
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struct ptr_16_32 {
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typedef struct {
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    uint16_t limit;
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    uint16_t limit;
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    uint32_t base;
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    uint32_t base;
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} __attribute__ ((packed));
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} __attribute__ ((packed)) ptr_16_32_t;
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typedef struct ptr_16_32 ptr_16_32_t;
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struct tss {
 145 
typedef struct {
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    uint32_t reserve1;
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    uint32_t reserve1;
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    uint64_t rsp0;
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    uint64_t rsp0;
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    uint64_t rsp1;
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    uint64_t rsp1;
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    uint64_t rsp2;
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    uint64_t rsp2;
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    uint64_t reserve2;
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    uint64_t reserve2;
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    uint64_t ist7;
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    uint64_t ist7;
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    uint64_t reserve3;
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    uint64_t reserve3;
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    uint16_t reserve4;
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    uint16_t reserve4;
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    uint16_t iomap_base;
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    uint16_t iomap_base;
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    uint8_t iomap[TSS_IOMAP_SIZE];
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    uint8_t iomap[TSS_IOMAP_SIZE];
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} __attribute__ ((packed));
 162 
} __attribute__ ((packed)) tss_t;
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typedef struct tss tss_t;
 - 
 
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 163 
 
173 
extern tss_t *tss_p;
 164 
extern tss_t *tss_p;
174 
 
 165 
 
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extern descriptor_t gdt[];
 166 
extern descriptor_t gdt[];
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extern idescriptor_t idt[];
 167 
extern idescriptor_t idt[];