diff options
Diffstat (limited to 'src/kernel')
| -rw-r--r-- | src/kernel/gdt.c (renamed from src/kernel/gdt/gdt.c) | 14 | ||||
| -rw-r--r-- | src/kernel/gdt/compile_flags.txt | 1 | ||||
| -rw-r--r-- | src/kernel/idt.c | 28 | ||||
| -rw-r--r-- | src/kernel/keyboard/pic.c | 1 |
4 files changed, 34 insertions, 10 deletions
diff --git a/src/kernel/gdt/gdt.c b/src/kernel/gdt.c index 4886dc3..406b40c 100644 --- a/src/kernel/gdt/gdt.c +++ b/src/kernel/gdt.c @@ -1,19 +1,15 @@ #include "gdt.h" #include <stdint.h> -GDT_t *table = 0x0; +GDT_t table = 0x0; extern GDTR_t gdtr; void get_gdtr() { uint32_t base = 0x0000; - *table = (GDT_t){ - // NULL - make_descriptor(0, 0, 0), - // Code segment, read - make_descriptor(base, 0x8FFFF, make_code(0, 0, 1)), - // Data segment, read write - make_descriptor(base, 0x8FFFF, make_data(0, 0, 1)), - }; + table[0] = make_descriptor(0, 0, 0); + table[1] = make_descriptor(base, 0x3FFFF, make_code(0, 0, 1)); + table[2] = make_descriptor(base, 0x3FFFF, make_data(0, 0, 1)); + gdtr.size = sizeof(Segment_Descriptor_t) * 3 - 1; gdtr.offset = base; } diff --git a/src/kernel/gdt/compile_flags.txt b/src/kernel/gdt/compile_flags.txt deleted file mode 100644 index 2af49c7..0000000 --- a/src/kernel/gdt/compile_flags.txt +++ /dev/null @@ -1 +0,0 @@ --I../../include/ diff --git a/src/kernel/idt.c b/src/kernel/idt.c new file mode 100644 index 0000000..f3fea4f --- /dev/null +++ b/src/kernel/idt.c @@ -0,0 +1,28 @@ +#include "idt.h" +#include "gdt.h" +#include <stdint.h> + +IDT_t idt = (IDT_t)0x7fffe; +extern GDTR_t idtr; + +void get_idtr() { + int base = 0x7fffe; + uint8_t code_seg = (0b1000 << 3) | 0b000; + + // idtr.size = sizeof(Gate_Descriptor_t) * n - 1; + idtr.size = 0; + idtr.offset = base; +} + +Gate_Descriptor_t make_gate(uint32_t offset, uint8_t segment_selector, + uint8_t type) { + Gate_Descriptor_t ret = (Gate_Descriptor_t){ + .offset_low = offset, + .reserved = 0, + .attrs = (0b1000 << 4) | type, + .offset_high = offset >> 16, + .segment_selector = segment_selector, + }; + + return ret; +} diff --git a/src/kernel/keyboard/pic.c b/src/kernel/keyboard/pic.c new file mode 100644 index 0000000..0c81629 --- /dev/null +++ b/src/kernel/keyboard/pic.c @@ -0,0 +1 @@ +#include "asm.h" |
