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authordzwdz2022-07-17 14:39:45 +0200
committerdzwdz2022-07-17 14:39:45 +0200
commit51cbabd0f40b041fa00203266afa046d14e88b22 (patch)
tree75022bc959b32e72876dfe3449faecac6feb5caa /src/kernel/arch/amd64/32/paging.c
parent4c10db944ca18c8001848c7e4e8ef51876bbe094 (diff)
amd64: remove dead code, combine shared code
Diffstat (limited to 'src/kernel/arch/amd64/32/paging.c')
-rw-r--r--src/kernel/arch/amd64/32/paging.c47
1 files changed, 8 insertions, 39 deletions
diff --git a/src/kernel/arch/amd64/32/paging.c b/src/kernel/arch/amd64/32/paging.c
index ef65ccf..f33168d 100644
--- a/src/kernel/arch/amd64/32/paging.c
+++ b/src/kernel/arch/amd64/32/paging.c
@@ -1,65 +1,34 @@
-#include <stddef.h>
-#include <stdint.h>
-
-struct page_generic {
- uint64_t present : 1;
- uint64_t writeable : 1;
- uint64_t user : 1;
- uint64_t writethru : 1;
-
- uint64_t uncached : 1;
- uint64_t accessed : 1;
- uint64_t dirty : 1;
- uint64_t large : 1; // also PAT
-
- uint64_t global : 1; // TODO enable CR4.PGE
- uint64_t _unused2 : 2;
- uint64_t _unused3 : 1; // HLAT
-
- uint64_t address : 40;
-
- uint64_t _unused4 : 7;
- uint64_t pke : 4;
- uint64_t noexec : 1;
-} __attribute__((packed));
+#include <kernel/arch/amd64/32/util.h>
+#include <kernel/arch/amd64/paging.h>
__attribute__((aligned(4096)))
-struct page_generic pml4_identity[512];
+pe_generic_t pml4_identity[512];
__attribute__((aligned(4096)))
-struct page_generic pdpte_low[512]; // 0-512gb
+static pe_generic_t pdpte_low[512]; // 0-512gb
__attribute__((aligned(4096)))
-struct page_generic pde_low[512]; // 0-1gb
-
-
-static void *memset32(void *s, int c, size_t n) {
- uint8_t *s2 = s;
- for (size_t i = 0; i < n; i++)
- s2[i] = c;
- return s;
-}
-
+static pe_generic_t pde_low[512]; // 0-1gb
void pml4_identity_init(void) {
memset32(pml4_identity, 0, sizeof pml4_identity);
memset32(pdpte_low, 0, sizeof pdpte_low);
memset32(pde_low, 0, sizeof pde_low);
- pml4_identity[0] = (struct page_generic) {
+ pml4_identity[0] = (pe_generic_t) {
.present = 1,
.writeable = 1,
.address = ((uintptr_t)pdpte_low) >> 12,
};
- pdpte_low[0] = (struct page_generic) {
+ pdpte_low[0] = (pe_generic_t) {
.present = 1,
.writeable = 1,
.address = ((uintptr_t)pde_low) >> 12,
};
for (int i = 0; i < 512; i++) {
- pde_low[i] = (struct page_generic) {
+ pde_low[i] = (pe_generic_t) {
.present = 1,
.writeable = 1,
.large = 1,