diff options
Diffstat (limited to 'include/09.paging/paging.c')
| -rw-r--r-- | include/09.paging/paging.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/include/09.paging/paging.c b/include/09.paging/paging.c index f08530d..9c4875a 100644 --- a/include/09.paging/paging.c +++ b/include/09.paging/paging.c @@ -1,11 +1,12 @@ +#include<source/paging.h> #include<types.h> extern void loadPageDirectory(uint32_t*); -extern void enablePaging(); +extern void enablePaging(void); uint32_t page_directory[1024] __attribute__((aligned(4096))); -void set_pd() +void set_pd(void) { //set each entry to not present for(size_t i=0;i<1024;i++) @@ -22,22 +23,25 @@ uint32_t page_table[1024][1024] __attribute__((aligned(4096))); void set_pt(size_t num,uint32_t address) { - // holds the physical address where we want to start mapping these pages to. - // in this case, we want to map these pages to the very beginning of memory. + // holds the physical address where we want to start mapping these pages + // to. + // in this case, we want to map these pages to the very beginning of + // memory. //we will fill all 1024 entries in the table, mapping 4 megabytes for(size_t i=0;i<1024;i++) { // As the address is page aligned, it will always leave 12 bits zeroed. // Those bits are used by the attributes ;) - page_table[num][i] = (address + i * 0x1000) | 3; // attributes: supervisor level, read/write, present. + page_table[num][i] = (address + i * 0x1000) | 3; // attributes: + supervisor level, read/write, present. } page_directory[num] = ((uint32_t)page_table[num]) | 3; // attributes: supervisor level, read/write, present } -void set_paging() +void set_paging(void) { set_pd(); for(size_t i=0;i<1024;i++) set_pt(i,0x00400000 * i); // all 4GB mapped |