0,0 → 1,59 |
#include <arch/mm/vhpt.h> |
#include <mm/frame.h> |
#include <print.h> |
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static vhpt_entry_t* vhpt_base; |
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__address vhpt_set_up(void) |
{ |
vhpt_base=(vhpt_entry_t*) PA2KA(PFN2ADDR(frame_alloc(VHPT_WIDTH-FRAME_WIDTH,FRAME_KA))); |
if(!vhpt_base) panic("Kernel configured with VHPT but no memory for table."); |
vhpt_invalidate_all(); |
return (__address) vhpt_base; |
} |
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void vhpt_mapping_insert(__address va, asid_t asid, tlb_entry_t entry) |
{ |
region_register rr_save, rr; |
index_t vrn; |
rid_t rid; |
__u64 tag; |
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vhpt_entry_t *ventry; |
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vrn = va >> VRN_SHIFT; |
rid = ASID2RID(asid, vrn); |
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rr_save.word = rr_read(vrn); |
rr.word = rr_save.word; |
rr.map.rid = rid; |
rr_write(vrn, rr.word); |
srlz_i(); |
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ventry = (vhpt_entry_t *) thash(va); |
tag = ttag(va); |
rr_write(vrn, rr_save.word); |
srlz_i(); |
srlz_d(); |
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ventry->word[0]=entry.word[0]; |
ventry->word[1]=entry.word[1]; |
ventry->present.tag.tag_word = tag; |
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} |
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void vhpt_invalidate_all() |
{ |
memsetb((__address)vhpt_base,1<<VHPT_WIDTH,0); |
} |
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void vhpt_invalidate_asid(asid_t asid) |
{ |
vhpt_invalidate_all(); |
} |
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