Subversion Repositories HelenOS-historic

Rev

Rev 110 | Rev 113 | Go to most recent revision | Show entire file | Ignore whitespace | Details | Blame | Last modification | View Log | RSS feed

Rev 110 Rev 112
Line 69... Line 69...
69 
struct ptr_16_32 gdtr __attribute__ ((section ("K_DATA_START"))) = { .limit = sizeof(gdt), .base = KA2PA((__address) gdt) };
 69 
struct ptr_16_32 gdtr __attribute__ ((section ("K_DATA_START"))) = { .limit = sizeof(gdt), .base = KA2PA((__address) gdt) };
70 
struct ptr_16_32 idtr __attribute__ ((section ("K_DATA_START"))) = { .limit = sizeof(idt), .base = KA2PA((__address) idt) };
 70 
struct ptr_16_32 idtr __attribute__ ((section ("K_DATA_START"))) = { .limit = sizeof(idt), .base = KA2PA((__address) idt) };
71 
 
 71 
 
72 
void gdt_setbase(struct descriptor *d, __address base)
 72 
void gdt_setbase(struct descriptor *d, __address base)
73 
{
 73 
{
74 
        d->base_0_15 = KA2PA(base) & 0xffff;
 74 
        d->base_0_15 = base & 0xffff;
75 
        d->base_16_23 = (KA2PA(base) >> 16) & 0xff;
 75 
        d->base_16_23 = ((base) >> 16) & 0xff;
76 
        d->base_24_31 = (KA2PA(base) >> 24) & 0xff;
 76 
        d->base_24_31 = ((base) >> 24) & 0xff;
77 
 
 77 
 
78 
}
 78 
}
79 
 
 79 
 
80 
void gdt_setlimit(struct descriptor *d, __u32 limit)
 80 
void gdt_setlimit(struct descriptor *d, __u32 limit)
81 
{
 81 
{
Line 83... Line 83...
83 
        d->limit_16_19 = (limit >> 16) & 0xf;
 83 
        d->limit_16_19 = (limit >> 16) & 0xf;
84 
}
 84 
}
85 
 
 85 
 
86 
void idt_setoffset(struct idescriptor *d, __address offset)
 86 
void idt_setoffset(struct idescriptor *d, __address offset)
87 
{
 87 
{
- 
 
 88 
    /*
- 
 
 89 
     * Offset is a linear address.
- 
 
 90 
     */
88 
    d->offset_0_15 = KA2PA(offset) & 0xffff;
 91 
    d->offset_0_15 = offset & 0xffff;
89 
    d->offset_16_31 = KA2PA(offset) >> 16;
 92 
    d->offset_16_31 = offset >> 16;
90 
}
 93 
}
91 
 
 94 
 
92 
void tss_initialize(struct tss *t)
 95 
void tss_initialize(struct tss *t)
93 
{
 96 
{
94 
    memsetb((__address) t, sizeof(struct tss), 0);
 97 
    memsetb((__address) t, sizeof(struct tss), 0);