1/* 2** Copyright 2003, Axel D��rfler, axeld@pinc-software.de. All rights reserved. 3** Distributed under the terms of the MIT License. 4*/ 5 6 7#include <arch_mmu.h> 8#include <arch_cpu.h> 9 10 11uint32 12page_table_entry::PrimaryHash(uint32 virtualSegmentID, uint32 virtualAddress) 13{ 14 return (virtualSegmentID & 0x7ffff) ^ ((virtualAddress >> 12) & 0xffff); 15} 16 17 18uint32 19page_table_entry::SecondaryHash(uint32 virtualSegmentID, uint32 virtualAddress) 20{ 21 return ~PrimaryHash(virtualSegmentID, virtualAddress); 22} 23 24 25uint32 26page_table_entry::SecondaryHash(uint32 primaryHash) 27{ 28 return ~primaryHash; 29} 30 31 32void 33ppc_get_page_table(page_table_entry_group **_pageTable, size_t *_size) 34{ 35 uint32 sdr1 = get_sdr1(); 36 37 *_pageTable = (page_table_entry_group *)(sdr1 & 0xffff0000); 38 *_size = ((sdr1 & 0x1ff) + 1) << 16; 39} 40 41 42void 43ppc_set_page_table(page_table_entry_group *pageTable, size_t size) 44{ 45 set_sdr1(((uint32)pageTable & 0xffff0000) | (((size -1) >> 16) & 0x1ff)); 46} 47 48