int
tss_alloc(struct pcb *pcb)
{
int slot;
struct sys_segment_descriptor *gdt;
gdt = (struct sys_segment_descriptor *)&gdtstore[DYNSEL_START];
slot = gdt_get_slot();
#if 0
printf("tss_alloc: slot %d addr %p\n", slot, &gdt[slot]);
#endif
set_sys_gdt(&gdt[slot], &pcb->pcb_tss, sizeof (struct x86_64_tss)-1,
SDT_SYS386TSS, SEL_KPL, 0);
#if 0
printf("lolimit %lx lobase %lx type %lx dpl %lx p %lx hilimit %lx\n"
"xx1 %lx gran %lx hibase %lx xx2 %lx zero %lx xx3 %lx pad %lx\n",
(unsigned long)gdt[slot].sd_lolimit,
(unsigned long)gdt[slot].sd_lobase,
(unsigned long)gdt[slot].sd_type,
(unsigned long)gdt[slot].sd_dpl,
(unsigned long)gdt[slot].sd_p,
(unsigned long)gdt[slot].sd_hilimit,
(unsigned long)gdt[slot].sd_xx1,
(unsigned long)gdt[slot].sd_gran,
(unsigned long)gdt[slot].sd_hibase,
(unsigned long)gdt[slot].sd_xx2,
(unsigned long)gdt[slot].sd_zero,
(unsigned long)gdt[slot].sd_xx3);
#endif
return GDYNSEL(slot, SEL_KPL);
}
/*
* Caller must have pmap locked for both of these functions.
*/
void
ldt_alloc(struct pmap *pmap, union descriptor *ldt, size_t len)
{
int slot;
slot = gdt_get_slot();
setgdt(slot, ldt, len - 1, SDT_SYSLDT, SEL_KPL, 0, 0);
pmap->pm_ldt_sel = GSEL(slot, SEL_KPL);
}
int
tss_alloc(const struct i386tss *tss)
{
int slot;
slot = gdt_get_slot();
setgdt(slot, tss, sizeof(struct i386tss) + IOMAPSIZE - 1,
SDT_SYS386TSS, SEL_KPL, 0, 0);
return GSEL(slot, SEL_KPL);
}
int
tss_alloc(struct pcb *pcb)
{
int slot;
slot = gdt_get_slot();
setgdt(slot, &pcb->pcb_tss, sizeof(struct pcb) - 1,
SDT_SYS386TSS, SEL_KPL, 0, 0);
return GSEL(slot, SEL_KPL);
}
void
ldt_alloc(struct pmap *pmap, char *ldt, size_t len)
{
int slot;
struct sys_segment_descriptor *gdt;
gdt = (struct sys_segment_descriptor *)&gdtstore[DYNSEL_START];
slot = gdt_get_slot();
set_sys_gdt(&gdt[slot], ldt, len - 1, SDT_SYSLDT, SEL_KPL, 0);
pmap->pm_ldt_sel = GSEL(slot, SEL_KPL);
}
/*
* Caller must have pmap locked for both of these functions.
*/
int
ldt_alloc(union descriptor *ldtp, size_t len)
{
int slot;
#ifndef XEN
slot = gdt_get_slot();
setgdt(slot, ldtp, len - 1, SDT_SYSLDT, SEL_KPL, 0, 0);
#else
slot = gdt_get_slot1(1);
cpu_info_primary.ci_gdt[slot].ld.ld_base = (uint32_t)ldtp;
cpu_info_primary.ci_gdt[slot].ld.ld_entries =
len / sizeof(union descriptor);
#endif
return GSEL(slot, SEL_KPL);
}
