Added new entries to .gitignore Moved away from source directory as central spot for all source code
44 lines
1.4 KiB
C++
44 lines
1.4 KiB
C++
#include "PageDirectory.h"
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void PageDirectory::enable()
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{
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// https://wiki.osdev.org/Setting_Up_Paging
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//set each entry to not present
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// int i;
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// for(i = 0; i < 1024; i++)
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// {
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// // This sets the following flags to the pages:
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// // Supervisor: Only kernel-mode can access them
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// // Write Enabled: It can be both read from and written to
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// // Not Present: The page table is not present
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// this->page_directory[i] = 0x00000002;
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// }
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// // holds the physical address where we want to start mapping these pages to.
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// // in this case, we want to map these pages to the very beginning of memory.
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// //we will fill all 1024 entries in the table, mapping 4 megabytes
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// for(unsigned int i = 0; i < 1024; i++)
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// {
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// // As the address is page aligned, it will always leave 12 bits zeroed.
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// // Those bits are used by the attributes ;)
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// first_page_table[i] = (i * 0x1000) | 3; // attributes: supervisor level, read/write, present.
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// }
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// // attributes: supervisor level, read/write, present
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// this->page_directory[0] = ((unsigned int)first_page_table) | 3;
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printf("Enable Paging!\n");
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loadPageDirectory(this->page_directory);
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enablePaging();
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}
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void PageDirectory::MapPhysicalToVirtualAddress ( address_t PAddress , address_t VAddress, uint32_t size )
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{
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}
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