printf spinlock + remove DEPRECATED stuff + begin separating x86 stuff

src/arch/x86/idt.c

@@ -4,7 +4,7 @@
  * @license GPL-3.0-only
  */
 
-#include <idt/idt.h>
+#include <arch/x86.h>
 #include <stdint.h>
 #include <stddef.h>
 #include <io/serial/serial.h>

src/debug/panic.c

@@ -5,7 +5,7 @@
  */
 
 #include <stddef.h>
-#include <idt/idt.h>
+#include <arch/x86.h>
 #include <io/serial/serial.h>
 #include <kernel.h>
 

src/io/kbd/ps2.c

@@ -216,10 +216,10 @@ void keyboard_handler()
 
                     if (c) {
                         if (c == '\n') {
-                            _putchar('\r');
+                            internal_putc('\r', NULL);
                         }
-                        // Should probably have a keyboard buffer here... instead of this
-                        _putchar(c);
+
+                        internal_putc(c, NULL);
                         keyboard_putchar(c);
                     }
                 }

src/io/term/term.c

@@ -30,19 +30,10 @@ extern struct flanterm_context* ft_ctx;
 extern struct init_status init;
 
 struct spinlock_t term_lock = {0};
+struct spinlock_t printf_lock = {0};
 
 extern int panic_count;
 
-/*
- * _putchar - Writes a character to terminal (DEPRECATED)
- * @character: character to write
- */
-void _putchar(char character)
-{
-	// TODO: Spinlock here (terminal access)
-	flanterm_write(ft_ctx, &character, 1);
-}
-
 /*
  * internal_putc - Internal putchar function
  * @c: char to print
@@ -83,14 +74,26 @@ void internal_putc(int c, void *_)
  *
  * Return:
  * <ret> - number of characters sent to the callback
+ * %-1   - error
  */
 int printf(const char* fmt, ...)
 {
-    va_list args;
-    va_start(args, fmt);
-    int ret = npf_vpprintf(internal_putc, NULL, fmt, args);
-    va_end(args);
-    return ret;
+    if (panic_count == 0) {
+        spinlock_acquire(&printf_lock);
+        va_list args;
+        va_start(args, fmt);
+        int ret = npf_vpprintf(internal_putc, NULL, fmt, args);
+        va_end(args);
+        spinlock_release(&printf_lock);
+        return ret;
+    } else {
+        va_list args;
+        va_start(args, fmt);
+        int ret = npf_vpprintf(internal_putc, NULL, fmt, args);
+        va_end(args);
+        return ret;
+    }
+    return -1;
 }
 
 /*
@@ -103,30 +106,14 @@ void kputs(const char* str)
 {
 	size_t i=0;
 	while (str[i] != 0) {
-		_putchar(str[i]);
+		internal_putc(str[i], NULL);
 		i++;
 	}
-	_putchar('\r');
 }
 
 extern struct flanterm_context* ft_ctx;
 extern struct boot_context boot_ctx;
 
-/*
- * flanterm_free_wrapper - free() wrapper for Flanterm (DEPRECATED)
- * @ptr:  pointer to free
- * @size: amount of bytes to free
- *
- * This function exists solely because the Flanterm initialization
- * function only accepts a free() function with a size parameter,
- * and the default one doesn't have it.
- */
-void flanterm_free_wrapper(void* ptr, size_t size)
-{
-	(void)size;
-	kfree(ptr);
-}
-
 /*
  * term_init - Video output/terminal initialization
  *

src/kmain.c

@@ -12,7 +12,6 @@
 #include <io/serial/serial.h>
 #include <mem/gdt.h>
 #include <mem/utils.h>
-#include <idt/idt.h>
 #include <kernel.h>
 #include <time/timer.h>
 #include <io/kbd/ps2.h>

src/mem/pmm.c

@@ -25,43 +25,6 @@ First we'll have to discover the physical memory layout,
 and for that we can use a Limine request.
 */
 
-// DEPRECATED
-struct limine_memmap_entry* biggest_entry;
-
-/*
- * pmm_find_biggest_usable_region - Finding the biggest free memory region (DEPRECATED)
- * @memmap: Limine memory map
- * @hhdm:   Limine HHDM offset
- *
- * This function uses the memory map provided by the bootloader
- * to find the single biggest free memory region we can use.
- */
-static void pmm_find_biggest_usable_region(struct limine_memmap_response* memmap, struct limine_hhdm_response* hhdm)
-{
-    // Max length of a usable memory region
-    uint64_t length_max = 0;
-    uint64_t offset = hhdm->offset;
-
-    DEBUG("Usable Memory:");
-    for (size_t i=0; i<memmap->entry_count; i++) {
-        struct limine_memmap_entry* entry = memmap->entries[i];
-
-        if (entry->type == LIMINE_MEMMAP_USABLE) {
-            DEBUG("0x%p-0x%p mapped at 0x%p-0x%p", entry->base, entry->base+entry->length,
-                        entry->base+offset, entry->base+entry->length+offset);
-            if (entry->length > length_max)
-            {
-                length_max = entry->length;
-                biggest_entry = entry;
-            }
-        }
-    }
-
-    DEBUG("Biggest usable memory region:");
-    DEBUG("0x%p-0x%p mapped at 0x%p-0x%p", biggest_entry->base, biggest_entry->base + biggest_entry->length,
-            biggest_entry->base+offset, biggest_entry->base+biggest_entry->length+offset);
-}
-
 // Offset from Higher Half Direct Map
 uint64_t hhdm_off;