chore: reorganize file directories

We have reorganized all the file directories that previously looked ugly as hell (cough cough arch/x86_64 cough)

Now it looks much cleaner

Signed-off-by: kaguya <vpshinomiya@protonmail.com>

src/arch/x86_64/boot/idt.c

@@ -1,5 +1,5 @@
 #include "idt.h"
-#include "util/binary.h"
+#include "libk/binary.h"
 
 
 IDTEntry g_IDT[256];

src/arch/x86_64/boot/isr.c

@@ -1,7 +1,7 @@
 // ... includes ...
-#include "io.h"
-#include "debug.h"
-#include "arch/x86_64/isr.h"
+#include "arch/x86_64/cpu/io.h"
+#include "libk/debug.h"
+#include "arch/x86_64/boot/isr.h"
 #include "idt.h"
 #define MODULE "ISR"
 

src/arch/x86_64/boot/isr_asm.S

@@ -16,7 +16,7 @@ x86_64_ISR\num:
     jmp isr_common
 .endm
 
-.include "arch/x86_64/isrs_gen.inc"   // ← update path if needed
+.include "arch/x86_64/boot/isrs_gen.inc"
 
 isr_common:
     push rax

src/arch/x86_64/bus/ata.c

@@ -1,7 +1,6 @@
 #include "ata.h"
-#include "io.h"
-#include "stdio.h"
-#include "memory.h"
+#include "arch/x86_64/cpu/io.h"
+#include "libk/stdio.h"
 #include <stdbool.h>
 
 

src/arch/x86_64/bus/pci.c

@@ -1,6 +1,6 @@
 #include "pci.h"
-#include "arch/x86_64/io.h"
-#include <stdio.h>
+#include "arch/x86_64/cpu/io.h"
+#include "libk/stdio.h"
 
 #define PCI_CFG_ADDR 0x0CF8
 #define PCI_CFG_DATA 0x0CFC

src/arch/x86_64/cpu/usermode.c

@@ -1,9 +1,9 @@
 #include <stdint.h>
-#include <string.h>
+#include "libk/string.h"
 #include "mm/pmm.h"
 #include "mm/vmm.h"
 #include "mm/memory.h"
-#include "stdio.h"
+#include "libk/stdio.h"
 #include "fs/elf.h"
 
 extern uintptr_t g_hhdm_offset;

src/arch/x86_64/sys/apic.c

@@ -1,8 +1,8 @@
 #include "apic.h"
 #include "mm/vmm.h"
 #include "mm/memory.h"
-#include "stdio.h"
-
+#include "arch/x86_64/cpu/io.h"
+#include "libk/stdio.h"
 /* ── Internal state ───────────────────────────────────────────────────────── */
 static volatile uint32_t *g_lapic = NULL;   /* Virtual address of LAPIC MMIO */
 

src/arch/x86_64/sys/e9.c

@@ -1,5 +1,5 @@
 #include "e9.h"
-#include <arch/x86_64/io.h>
+#include "arch/x86_64/cpu/io.h"
 
 void e9_putc(char c)
 {

src/arch/x86_64/sys/i8259.c

@@ -1,5 +1,5 @@
 #include "pic.h"
-#include "io.h"
+#include "arch/x86_64/cpu/io.h"
 #include <stdbool.h>
 
 #define PIC1_COMMAND_PORT           0x20

src/arch/x86_64/sys/ioapic.c

@@ -2,7 +2,7 @@
 #include "apic.h"
 #include "mm/vmm.h"
 #include "mm/memory.h"
-#include "stdio.h"
+#include "libk/stdio.h"
 #include <uacpi/tables.h>   /* uacpi_table_find_by_signature / uacpi_table_unref */
 #include "pic.h"
 

src/arch/x86_64/sys/irq.c

@@ -1,10 +1,10 @@
 #include "irq.h"
 #include "i8259.h"
-#include "io.h"
+#include "arch/x86_64/cpu/io.h"
 #include <stddef.h>
-#include <util/arrays.h>
-#include "stdio.h"
-#include <debug.h>
+#include "libk/arrays.h"
+#include "libk/stdio.h"
+#include "libk/debug.h"
 #include "apic.h"
 #include "ioapic.h"
 

src/arch/x86_64/sys/irq.h

@@ -1,5 +1,5 @@
 #pragma once
-#include "isr.h"
+#include "arch/x86_64/boot/isr.h"
 
 
 typedef void (*IRQHandler)(Registers* regs);

src/arch/x86_64/sys/pit.c

@@ -1,8 +1,8 @@
 #include "pit.h"
 #include "irq.h"
-#include "io.h"
+#include "arch/x86_64/cpu/io.h"
 #include <stdint.h>
-#include "stdio.h"
+#include "libk/stdio.h"
 #include "e9.h"
 #include "limine.h"
 #include "apic.h"

src/arch/x86_64/sys/pit.h

@@ -1,9 +1,8 @@
 #pragma once
 #include <stdint.h>
 #include "irq.h"
-#include "io.h"
-#include <stdint.h>
-#include "stdio.h"
+#include "arch/x86_64/cpu/io.h"
+#include "libk/stdio.h"
 #include "e9.h"
 
 extern volatile uint64_t g_Ticks;

src/arch/x86_64/sys/tsc.c

@@ -0,0 +1,49 @@
+#include <stdint.h>
+#include "arch/x86_64/sys/pit.h"
+#include "arch/x86_64/cpu/io.h"
+#include "libk/stdio.h"
+#include "tsc.h"
+
+extern uint64_t PIT_GetTicks(void);
+
+volatile uint64_t tsc_cycles_per_us = 0;
+
+uint64_t rdtsc(void)
+{
+    uint32_t lo, hi;
+    __asm__ volatile ("rdtsc" : "=a"(lo), "=d"(hi));
+    return ((uint64_t)hi << 32) | lo;
+}
+
+
+void calibrate_tsc(void)
+{
+    // Use a stable PIT rate for calibration
+    const uint32_t pit_freq = 1000; // 1000 Hz = 1ms per tick
+    const uint32_t calibration_ticks = 1000; // 1 second total
+
+
+
+    // Wait for PIT to stabilize
+    uint64_t start_ticks = PIT_GetTicks();
+    while (PIT_GetTicks() == start_ticks)
+        ;
+
+    uint64_t start_tsc = rdtsc();
+    uint64_t target_ticks = start_ticks + calibration_ticks;
+
+    // Wait for known number of PIT ticks
+    while (PIT_GetTicks() < target_ticks)
+        ;
+
+    uint64_t end_tsc = rdtsc();
+
+    // Compute elapsed time
+    uint64_t tsc_delta = end_tsc - start_tsc;
+
+    uint64_t elapsed_us = 1000000ULL;
+
+    tsc_cycles_per_us = tsc_delta / elapsed_us;
+
+    printf("TSC calibration complete: %lu cycles/us\n", tsc_cycles_per_us);
+}

src/arch/x86_64/sys/tsc.h

@@ -0,0 +1,9 @@
+#include <stdint.h>
+#include "arch/x86_64/sys/pit.h"
+#include "arch/x86_64/cpu/io.h"
+#include "libk/stdio.h"
+uint64_t rdtsc(void);
+
+
+
+void calibrate_tsc(void);