From 0b77abfc236928c4c22cdf25634c3943a0dccd29 Mon Sep 17 00:00:00 2001
From: Daniel Hammer <danhammer.nexlink@gmail.com>
Date: Wed, 16 Apr 2025 18:54:48 +0200
Subject: [PATCH] feat(io): IoPort

---
 kernel/src/CppLib/Alloc.cpp | 10 +++++++++
 kernel/src/Io/IoPort.hpp    | 41 +++++++++++++++++++++++++++++++++++++
 kernel/src/Main.cpp         |  7 +------
 3 files changed, 52 insertions(+), 6 deletions(-)
 create mode 100644 kernel/src/Io/IoPort.hpp

diff --git a/kernel/src/CppLib/Alloc.cpp b/kernel/src/CppLib/Alloc.cpp
index 164d638..abbc8c7 100644
--- a/kernel/src/CppLib/Alloc.cpp
+++ b/kernel/src/CppLib/Alloc.cpp
@@ -12,11 +12,21 @@ void* operator new(std::size_t size)
     return Memory::g_heap->Request(size);
 }
 
+void* operator new[](std::size_t size)
+{
+    return Memory::g_heap->Request(size);
+}
+
 void operator delete(void* block)
 {
     Memory::g_heap->Free(block);
 }
 
+void operator delete[](void* block)
+{
+    delete block;
+}
+
 void operator delete(void* block, long unsigned int)
 {
     Memory::g_heap->Free(block);
diff --git a/kernel/src/Io/IoPort.hpp b/kernel/src/Io/IoPort.hpp
new file mode 100644
index 0000000..3170784
--- /dev/null
+++ b/kernel/src/Io/IoPort.hpp
@@ -0,0 +1,41 @@
+/*
+    * PortIo.hpp
+    * Inline Intel port IO functions
+    * Copyright (c) 2025 Daniel Hammer
+*/
+
+#pragma once
+#include <cstdint>
+
+namespace Io {
+    // OSDev website has the parameters for out(b/w/l) in the opposite order in their example,
+    // (port, then value), but the manpage on GNU ('man outb') has it in this order.
+
+    inline void Out8(uint8_t value, uint16_t port) {
+        asm ("outb %0, %1" : : "a"(value), "Nd"(port) : "memory");
+    }
+
+    inline void Out16(uint16_t value, uint16_t port) {
+        asm ("outw %0, %1" : : "a"(value), "Nd"(port) : "memory");
+    }
+
+    inline void Out32(uint32_t value, uint16_t port) {
+        asm ("outl %0, %1" : : "a"(value), "Nd"(port) : "memory");
+    }
+
+    inline uint8_t In8(uint16_t port) {
+        asm ("inb %0" : : "Nd"(port) : "memory");
+    }
+
+    inline uint16_t In16(uint16_t port) {
+        asm ("inw %0" : : "Nd"(port) : "memory");
+    }
+
+    inline uint32_t In32(uint16_t port) {
+        asm ("inl %0" : : "Nd"(port) : "memory");
+    }
+
+    inline void IoPortWait() {
+        Out8(0x80, 0);
+    }
+};
\ No newline at end of file
diff --git a/kernel/src/Main.cpp b/kernel/src/Main.cpp
index ee89697..efddf84 100644
--- a/kernel/src/Main.cpp
+++ b/kernel/src/Main.cpp
@@ -7,7 +7,6 @@
 #include <cstdint>
 #include <cstddef>
 #include <limine.h>
-
 #include <Hal/GDT.hpp>
 #include <Terminal/Terminal.hpp>
 #include <Libraries/String.hpp>
@@ -16,20 +15,16 @@
 #include <Memory/Memmap.hpp>
 #include <Memory/Heap.hpp>
 #include <Memory/HHDM.hpp>
-
 #include <CppLib/Stream.hpp>
 #include <CppLib/Vector.hpp>
 #include <CppLib/CString.hpp>
-
 #include <Platform/Limine.hpp>
 #include <Platform/Util.hpp>
-
 #include <Libraries/Memory.hpp>
-
 #include <Hal/IDT.hpp>
-
 #include <Memory/PageFrameAllocator.hpp>
 #include <Memory/HHDM.hpp>
+#include <Io/IoPort.hpp>
 
 using namespace Kt;