66,7 → 66,7 |
#define DPL_KERNEL (PL_KERNEL<<5) |
#define DPL_USER (PL_USER<<5) |
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#define IO_MAP_BASE (104) |
#define TSS_BASIC_SIZE 104 |
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#ifndef __ASM__ |
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82,6 → 82,7 |
unsigned granularity : 1; |
unsigned base_24_31: 8; |
} __attribute__ ((packed)); |
typedef struct descriptor descriptor_t; |
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struct tss_descriptor { |
unsigned limit_0_15: 16; |
88,7 → 89,7 |
unsigned base_0_15: 16; |
unsigned base_16_23: 8; |
unsigned type: 4; |
unsigned : 1; |
unsigned : 1; |
unsigned dpl : 2; |
unsigned present : 1; |
unsigned limit_16_19: 4; |
99,6 → 100,7 |
unsigned base_32_63 : 32; |
unsigned : 32; |
} __attribute__ ((packed)); |
typedef struct tss_descriptor tss_descriptor_t; |
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struct idescriptor { |
unsigned offset_0_15: 16; |
112,16 → 114,19 |
unsigned offset_32_63: 32; |
unsigned : 32; |
} __attribute__ ((packed)); |
typedef struct idescriptor idescriptor_t; |
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struct ptr_16_64 { |
__u16 limit; |
__u64 base; |
} __attribute__ ((packed)); |
typedef struct ptr_16_64 ptr_16_64_t; |
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struct ptr_16_32 { |
__u16 limit; |
__u32 base; |
} __attribute__ ((packed)); |
typedef struct ptr_16_32 ptr_16_32_t; |
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struct tss { |
__u32 reserve1; |
141,25 → 146,26 |
__u16 iomap_base; |
__u8 iomap[0x10000 + 1]; /* 64K + 1 terminating byte */ |
} __attribute__ ((packed)); |
typedef struct tss tss_t; |
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extern struct tss *tss_p; |
extern tss_t *tss_p; |
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extern struct descriptor gdt[]; |
extern struct idescriptor idt[]; |
extern descriptor_t gdt[]; |
extern idescriptor_t idt[]; |
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extern struct ptr_16_64 gdtr; |
extern struct ptr_16_32 bootstrap_gdtr; |
extern struct ptr_16_32 protected_ap_gdtr; |
extern ptr_16_64_t gdtr; |
extern ptr_16_32_t bootstrap_gdtr; |
extern ptr_16_32_t protected_ap_gdtr; |
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extern void pm_init(void); |
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extern void gdt_tss_setbase(struct descriptor *d, __address base); |
extern void gdt_tss_setlimit(struct descriptor *d, __u32 limit); |
extern void gdt_tss_setbase(descriptor_t *d, __address base); |
extern void gdt_tss_setlimit(descriptor_t *d, __u32 limit); |
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extern void idt_init(void); |
extern void idt_setoffset(struct idescriptor *d, __address offset); |
extern void idt_setoffset(idescriptor_t *d, __address offset); |
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extern void tss_initialize(struct tss *t); |
extern void tss_initialize(tss_t *t); |
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#endif /* __ASM__ */ |
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