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Added some Page Table stuff :3

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vanten-s 2025-02-23 18:26:02 +01:00
parent 9fd57e7e34
commit 64f29facc5
1 changed files with 28 additions and 5 deletions
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33
arch/i686/paging.c
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@ -15,13 +15,36 @@ struct x86_Page_Directory {
bool available_2: 1;
bool page_size: 1;
uint8_t available_1 : 4;
uint32_t address : 20;
uint32_t address : 20; // Multiply by 0x1000
} __attribute__((packed));
extern uint32_t boot_page_directory[1024] __attribute__((aligned(4096)));
struct x86_Page_Table {
bool present: 1;
bool read_write: 1;
bool user_supervisor: 1;
bool write_through: 1;
bool cache_disable: 1;
bool accesed: 1;
bool dirty: 1;
bool page_attribute_table: 1;
bool global: 1;
uint8_t available_1 : 3;
uint32_t address : 20; // Multiply by 0x1000
} __attribute__((packed));
extern struct x86_Page_Directory boot_page_directory[1024] __attribute__((aligned(4096)));
static struct x86_Page_Table* get_table(uint16_t index) {
struct x86_Page_Table* table = (struct x86_Page_Table*)(boot_page_directory[index].address * 0x1000 + 0xC0000000);
return table;
}
void setup_paging() {
size_t size = sizeof(boot_page_directory[0]);
struct x86_Page_Directory *directory = (struct x86_Page_Directory*) boot_page_directory;
uint32_t table_1 = boot_page_directory[768];
struct x86_Page_Table* kernel = get_table(768);
for (int i = 0; i < 1024; i++) {
if (kernel[i].address != 0) {
struct x86_Page_Table test = kernel[i];
}
}
}