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Some refactoring

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This commit is contained in:
Braiden Vasco 2017-11-08 07:51:55 +00:00
parent baf0cbc261
commit 832f9e77a6
1 changed files with 23 additions and 31 deletions
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54
arch/paging.c
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@ -46,7 +46,7 @@ void write_cr0(volatile unsigned long);
void write_cr3(volatile unsigned long);
void write_cr4(volatile unsigned long);
static unsigned long pagedir[PAGE_DIR_SIZE] __attribute__((aligned(4096)));
static struct entry pagedir[PAGE_DIR_SIZE] __attribute__((aligned(4096)));
void paging_enable()
{
@ -86,22 +86,18 @@ void paging_clear()
void paging_identity()
{
for (int i = 0; i < PAGE_DIR_SIZE; ++i) {
struct entry entry;
pagedir[i].addr = (i * PAGE_BIG_SIZE) >> 12;
entry.addr = (i * PAGE_BIG_SIZE) >> 12;
entry.unused = 0;
entry.ignored = 0;
entry.page_size = 1;
entry.always_0 = 0;
entry.accessed = 0;
entry.cache_disabled = 1;
entry.write_through = 1;
entry.user = 1;
entry.writable = 1;
entry.present = 1;
pagedir[i] = *((unsigned long*)(&entry));
pagedir[i].unused = 0;
pagedir[i].ignored = 0;
pagedir[i].page_size = 1;
pagedir[i].always_0 = 0;
pagedir[i].accessed = 0;
pagedir[i].cache_disabled = 1;
pagedir[i].write_through = 1;
pagedir[i].user = 1;
pagedir[i].writable = 1;
pagedir[i].present = 1;
}
}
@ -116,22 +112,18 @@ int paging_mapkernel(const struct KernelMQ_Info *const kinfo)
unsigned long kern_phys = kinfo->kernel_phys_base;
while (mapped < kinfo->kernel_size) {
struct entry entry;
pagedir[pde].addr = kern_phys >> 12;
entry.addr = kern_phys >> 12;
entry.unused = 0;
entry.ignored = 0;
entry.page_size = 1;
entry.always_0 = 0;
entry.accessed = 0;
entry.cache_disabled = 0;
entry.write_through = 0;
entry.user = 0;
entry.writable = 1;
entry.present = 1;
pagedir[pde] = *((unsigned long*)(&entry));
pagedir[pde].unused = 0;
pagedir[pde].ignored = 0;
pagedir[pde].page_size = 1;
pagedir[pde].always_0 = 0;
pagedir[pde].accessed = 0;
pagedir[pde].cache_disabled = 0;
pagedir[pde].write_through = 0;
pagedir[pde].user = 0;
pagedir[pde].writable = 1;
pagedir[pde].present = 1;
mapped += PAGE_BIG_SIZE;
kern_phys += PAGE_BIG_SIZE;