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kernel
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Use DTR from libkernaux

This commit is contained in:
Alex Kotov 2022-11-28 02:45:38 +04:00
parent c03c242633
commit 6f4262877e
Signed by: kotovalexarian
GPG Key ID: 553C0EBBEB5D5F08
1 changed files with 6 additions and 18 deletions
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24
src/protected.c
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@ -12,20 +12,8 @@
#include <stdint.h>
#include <string.h>
struct GdtPointer {
uint16_t limit;
uint32_t base;
}
__attribute__((packed));
struct IdtPointer {
uint16_t limit;
uint32_t base;
}
__attribute__((packed));
static struct GdtPointer gdt_pointer;
static struct IdtPointer idt_pointer;
static struct KernAux_Arch_I386_DTR gdt_pointer;
static struct KernAux_Arch_I386_DTR idt_pointer;
static struct KernAux_Arch_I386_DTE gdt_entries[GDT_SIZE];
static struct KernAux_Arch_I386_IDTE idt_entries[IDT_SIZE];
@ -54,8 +42,8 @@ void protected_initialize(const struct Kernel_Info *const kinfo)
tss.esp0 = kinfo->kernel_stack_start + kinfo->kernel_stack_size;
kernaux_drivers_console_print("[INFO] protected: Load GDT.\n");
gdt_pointer.limit = sizeof(struct KernAux_Arch_I386_DTE) * GDT_SIZE - 1;
gdt_pointer.base = (uint32_t)&gdt_entries;
gdt_pointer.size = sizeof(struct KernAux_Arch_I386_DTE) * GDT_SIZE - 1;
gdt_pointer.offset = (uint32_t)&gdt_entries;
kernaux_asm_i386_flush_gdt(
(uint32_t)&gdt_pointer,
GDT_KERNEL_DS_SELECTOR,
@ -63,8 +51,8 @@ void protected_initialize(const struct Kernel_Info *const kinfo)
);
kernaux_drivers_console_print("[INFO] protected: Load IDT.\n");
idt_pointer.limit = sizeof(struct KernAux_Arch_I386_IDTE) * IDT_SIZE - 1;
idt_pointer.base = (uint32_t)&idt_entries;
idt_pointer.size = sizeof(struct KernAux_Arch_I386_IDTE) * IDT_SIZE - 1;
idt_pointer.offset = (uint32_t)&idt_entries;
kernaux_asm_i386_flush_idt((uint32_t)&idt_pointer);
// kernaux_drivers_console_print("[INFO] protected: Load TSS.\n");