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First Hello world syscall
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This commit is contained in:
Kamil Kowalczyk
2026-01-03 02:04:09 +01:00
parent 1341dc00d9
commit e52268cd8e
26 changed files with 228 additions and 140 deletions
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9
kernel/amd64/intr.c
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@@ -1,4 +1,5 @@
#include <amd64/apic.h>
#include <amd64/gdt.h>
#include <amd64/intr.h>
#include <amd64/intr_defs.h>
#include <amd64/io.h>
@@ -90,7 +91,7 @@ static void amd64_init_pic (void) {
static void amd64_idt_set (volatile struct idt_entry* ent, uint64_t handler, uint8_t flags,
uint8_t ist) {
ent->intrlow = (handler & 0xFFFF);
ent->kernel_cs = 0x08; // GDT_KCODE (init.c)
ent->kernel_cs = GDT_KCODE;
ent->ist = ist;
ent->attrs = flags;
ent->intrmid = ((handler >> 16) & 0xFFFF);
@@ -163,7 +164,7 @@ static void amd64_intr_exception (struct saved_regs* regs) {
regs->error, regs->rip, regs->cs, regs->rflags, regs->rsp, regs->ss, cr2, cr3,
regs->rbx);
if (regs->cs == (0x18 | 0x03)) {
if (regs->cs == (GDT_UCODE | 0x03)) {
proc_kill (thiscpu->proc_current);
} else {
spin ();
@@ -182,12 +183,12 @@ void amd64_intr_handler (void* stack_ptr) {
struct irq* irq = irq_find (regs->trap);
if (irq != NULL) {
if (!(irq->flags & IRQ_INTERRUPT_SAFE))
if ((irq->flags & IRQ_INTERRUPT_SAFE))
__asm__ volatile ("sti");
irq->func (irq->arg, stack_ptr);
if (!(irq->flags & IRQ_INTERRUPT_SAFE))
if ((irq->flags & IRQ_INTERRUPT_SAFE))
__asm__ volatile ("cli");
}
}