kernel: boot: interrupts: split interrupt-specific functions into its

own file

4 files changed, 62 insertions, 29 deletions

diff --git a/kernel/CMakeLists.txt b/kernel/CMakeLists.txt
index e8d366c..56b783a 100644
--- a/kernel/CMakeLists.txt
+++ b/kernel/CMakeLists.txt
@@ -9,6 +9,7 @@ set(SRC
   boot/init/crtn.s
   boot/interrupts/exceptions.cc
   boot/interrupts/idt.cc
+  boot/interrupts/interrupts.cc
   boot/interrupts/isr.s
   drivers/serial.cc
   drivers/vga_text_buffer.cc
diff --git a/kernel/boot/interrupts/idt.cc b/kernel/boot/interrupts/idt.cc
index 014ef15..1b42853 100644
--- a/kernel/boot/interrupts/idt.cc
+++ b/kernel/boot/interrupts/idt.cc
@@ -38,15 +38,6 @@ idt_loaded(void)
 }
 
 void
-initialize()
-{
-  load_idt();
-  printk("\nInterrupts", "IDT Loaded.");
-  enable();
-  printk("Interrupts", "Initialized.");
-}
-
-void
 load_idt(void)
 {
   for (uint16_t i = 0; i < 256; i++)
@@ -63,23 +54,4 @@ load_idt(void)
   l_idt_loaded = true;
 }
 
-void
-enable(void)
-{
-  if (!l_idt_loaded) {
-    printk("Interrupts", "Attempt to enable before IDT load.");
-    ASSERT_NOT_REACHED();
-  }
-
-  __asm__ volatile("sti");
-  // printk("\ninterrupts", "Enabled.");
-}
-
-void
-disable(void)
-{
-  __asm__ volatile("cli");
-  // printk("\ninterrupts", "Disabled.");
-}
-
 }
diff --git a/kernel/boot/interrupts/interrupts.cc b/kernel/boot/interrupts/interrupts.cc
new file mode 100644
index 0000000..dd96214
--- /dev/null
+++ b/kernel/boot/interrupts/interrupts.cc
@@ -0,0 +1,57 @@
+/*
+ * bubbl
+ * Copyright (C) 2025  Raghuram Subramani <raghus2247@gmail.com>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <boot/interrupts.h>
+#include <common.h>
+#include <kernel/halt.h>
+#include <kernel/io.h>
+#include <libk/stdio.h>
+
+namespace Interrupts
+{
+
+void
+initialize()
+{
+  load_idt();
+  printk("\nInterrupts", "IDT Loaded.");
+
+  enable();
+  printk("Interrupts", "Initialized.");
+}
+
+void
+enable(void)
+{
+  if (!idt_loaded()) {
+    printk("Interrupts", "Attempt to enable before IDT load.");
+    ASSERT_NOT_REACHED();
+  }
+
+  __asm__ volatile("sti");
+  // printk("\ninterrupts", "Enabled.");
+}
+
+void
+disable(void)
+{
+  __asm__ volatile("cli");
+  // printk("\ninterrupts", "Disabled.");
+}
+
+}
diff --git a/kernel/include/boot/interrupts.h b/kernel/include/boot/interrupts.h
index 5fbe696..2bd4493 100644
--- a/kernel/include/boot/interrupts.h
+++ b/kernel/include/boot/interrupts.h
@@ -58,10 +58,13 @@ typedef struct {
   entry_t *ptr;   /* Address of IDT */
 } PACKED descriptor_t;
 
+/* Simply loads IDT and enables interrupts */
 void initialize(void);
-void load_idt(void);
 void enable(void);
 void disable(void);
+
+/* IDT */
+void load_idt(void);
 bool idt_loaded(void);
 
 extern "C" NORETURN void exception_handler(void);