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kernel: ldt support

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Matheus
2026-03-20 21:23:59 -03:00
parent a73c82f912
commit 41f97c6c61
17 changed files with 315 additions and 94 deletions
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kernel-src/arch/x86-64/cpu.c
+10
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@@ -46,6 +46,13 @@ static void x87isr(isr_t *self, context_t *ctx) {
}
}
static void reload_ldt(isr_t *self, context_t *ctx) {
if (current_thread() == NULL || current_thread()->proc == NULL || current_thread()->proc->ldt == NULL)
return;
arch_ldt_invalidate();
}
void arch_nmi_isr(context_t *ctx) {
// we are in an NMI context, running on IST0
// first load the proper gsbase to get access to cpu-local variables.
@@ -219,6 +226,9 @@ void arch_cpu_init() {
interrupt_register(16, x87isr, NULL, IPL_IGNORE);
interrupt_register(19, simdisr, NULL, IPL_IGNORE);
// and the ldt reload one
interrupt_register(0xfc, (void *)reload_ldt, NULL, IPL_MAX);
// get vendor string for cpu and max cpuid eax
__get_cpuid(0, &eax, &ebx, &ecx, &edx);
int *vendor_ptr = (int *)current_cpu()->vendor;