aboutsummaryrefslogtreecommitdiff
path: root/kernel/gdt.c
diff options
context:
space:
mode:
authorFranklin Wei <frankhwei536@gmail.com>2015-03-01 14:20:47 -0500
committerFranklin Wei <frankhwei536@gmail.com>2015-03-01 14:20:47 -0500
commitc7252588ebb95f97631e9470778c69afa00c35b5 (patch)
tree06d760878e18f6cddbe4305cddd4d5dfa74529f8 /kernel/gdt.c
parentb8f54e63d2b8f8007c580adf2a6034c98a0f2eaa (diff)
downloadkappa-c7252588ebb95f97631e9470778c69afa00c35b5.zip
kappa-c7252588ebb95f97631e9470778c69afa00c35b5.tar.gz
kappa-c7252588ebb95f97631e9470778c69afa00c35b5.tar.bz2
kappa-c7252588ebb95f97631e9470778c69afa00c35b5.tar.xz
Huge restructure
Diffstat (limited to 'kernel/gdt.c')
-rw-r--r--kernel/gdt.c34
1 files changed, 0 insertions, 34 deletions
diff --git a/kernel/gdt.c b/kernel/gdt.c
deleted file mode 100644
index 36a0cda..0000000
--- a/kernel/gdt.c
+++ /dev/null
@@ -1,34 +0,0 @@
-#include "gdt.h"
-
-static void gdt_set_gate(int idx, uint32_t base, uint32_t limit, uint8_t access, uint8_t gran)
-{
- /* Setup the descriptor base address */
- gdt[idx].base_low = (base & 0xFFFF);
- gdt[idx].base_middle = (base >> 16) & 0xFF;
- gdt[idx].base_high = (base >> 24) & 0xFF;
-
- /* Setup the descriptor limits */
- gdt[idx].limit_low = (limit & 0xFFFF);
- gdt[idx].granularity = ((limit >> 16) & 0x0F);
-
- /* Finally, set up the granularity and access flags */
- gdt[idx].granularity |= (gran & 0xF0);
- gdt[idx].access = access;
-}
-
-void gdt_init(void)
-{
- gp.limit = sizeof(gdt) - 1;
- gp.base = (uint32_t)&gdt;
-
- /* null segment */
- gdt_set_gate(0, 0, 0, 0, 0);
-
- /* code segment */
- gdt_set_gate(1, 0, 0xFFFFFFFF, 0x9A, 0xCF);
-
- /* data segment */
- gdt_set_gate(2, 0, 0xFFFFFFFF, 0x92, 0xCF);
-
- gdt_flush((uint32_t)&gp);
-}