tailix
/
kernel
mirror of https://github.com/tailix/kernel.git
1
0
Fork 0
Code Releases Activity

Fix paging

This commit is contained in:
Alex Kotov 2021-12-19 01:33:18 +05:00
parent b1cd004fe8
commit 03baf41ca6
Signed by: kotovalexarian
GPG Key ID: 553C0EBBEB5D5F08
3 changed files with 8 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/main.c
View File

@ -143,7 +143,9 @@ void main(
kernel_info_print(&kinfo);
assert(kernel_info_is_valid(&kinfo), "Invalid kernel information.");
// TODO: maybe rename to init?
paging_clear(&paging);
paging_identity(&paging);
paging_mapkernel(&paging, &kinfo);

12
kernel/paging.c
View File

@ -43,7 +43,7 @@ void paging_enable()
void paging_clear(struct Paging *const paging)
{
memset(&paging->page_dir, 0, sizeof(paging->page_dir));
memset(paging, 0, sizeof(*paging));
}
void paging_identity(struct Paging *const paging)
@ -51,10 +51,9 @@ void paging_identity(struct Paging *const paging)
for (size_t i = 0; i < PAGE_DIR_LENGTH; ++i) {
paging->page_dir[i].addr = PAGE_DIR_ADDR(i * PAGE_BIG_SIZE);
paging->page_dir[i].unused = 0;
paging->page_dir[i].ignored = 0;
paging->page_dir[i].available1 = 0;
paging->page_dir[i].page_size = 1;
paging->page_dir[i].always_0 = 0;
paging->page_dir[i].available0 = 0;
paging->page_dir[i].accessed = 0;
paging->page_dir[i].cache_disabled = 1;
paging->page_dir[i].write_through = 1;
@ -79,10 +78,9 @@ void paging_mapkernel(
while (mapped < kinfo->kernel_size) {
paging->page_dir[pde].addr = PAGE_DIR_ADDR(kern_phys);
paging->page_dir[pde].unused = 0;
paging->page_dir[pde].ignored = 0;
paging->page_dir[pde].available1 = 0;
paging->page_dir[pde].page_size = 1;
paging->page_dir[pde].always_0 = 0;
paging->page_dir[pde].available0 = 0;
paging->page_dir[pde].accessed = 0;
paging->page_dir[pde].cache_disabled = 0;
paging->page_dir[pde].write_through = 0;

1
kernel/paging.h
View File

@ -25,6 +25,7 @@ void paging_load(struct Paging *paging);
void paging_enable();
void paging_clear(struct Paging *paging);
void paging_identity(struct Paging *paging);
void paging_mapkernel(struct Paging *paging, const struct Kernel_Info *kinfo);