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Kernel: Put GDT and IDT in BSS rather than runtime-allocating them.

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This commit is contained in:
Andreas Kling 2019-05-17 18:25:50 +02:00
parent e0ff07bb57
commit e8ae2c952e
1 changed files with 3 additions and 8 deletions
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11
Kernel/i386.cpp
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@ -1,5 +1,4 @@
#include <AK/Types.h> #include <AK/Types.h>
#include "kmalloc.h"
#include "i386.h" #include "i386.h"
#include "Assertions.h" #include "Assertions.h"
#include "Process.h" #include "Process.h"
@ -18,10 +17,10 @@ struct [[gnu::packed]] DescriptorTablePointer {
static DescriptorTablePointer s_idtr; static DescriptorTablePointer s_idtr;
static DescriptorTablePointer s_gdtr; static DescriptorTablePointer s_gdtr;
static Descriptor* s_idt; static Descriptor s_idt[256];
static Descriptor* s_gdt; static Descriptor s_gdt[256];
static IRQHandler** s_irq_handler; static IRQHandler* s_irq_handler[16];
static Vector<word>* s_gdt_freelist; static Vector<word>* s_gdt_freelist;
@ -347,7 +346,6 @@ void flush_gdt()
void gdt_init() void gdt_init()
{ {
s_gdt = static_cast<Descriptor*>(kmalloc_eternal(sizeof(Descriptor) * 256));
s_gdt_length = 5; s_gdt_length = 5;
s_gdt_freelist = new Vector<word>(); s_gdt_freelist = new Vector<word>();
@ -430,8 +428,6 @@ asm(
void idt_init() void idt_init()
{ {
s_idt = static_cast<Descriptor*>(kmalloc_eternal(sizeof(Descriptor) * 256));
s_idtr.address = s_idt; s_idtr.address = s_idt;
s_idtr.limit = 0x100 * 8 - 1; s_idtr.limit = 0x100 * 8 - 1;
@ -458,7 +454,6 @@ void idt_init()
register_interrupt_handler(0x57, irq7_handler); register_interrupt_handler(0x57, irq7_handler);
s_irq_handler = static_cast<IRQHandler**>(kmalloc_eternal(sizeof(IRQHandler*) * 16));
for (byte i = 0; i < 16; ++i) { for (byte i = 0; i < 16; ++i) {
s_irq_handler[i] = nullptr; s_irq_handler[i] = nullptr;
} }