Refactor

Author: m3m0r7

src/Service/BIOS/IO/PrintConstantString/PrintNewLine.php

@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PHPOS\Service\BIOS\IO\PrintConstantString;
+
+use PHPOS\Architecture\Register\DataRegisterWithHighAndLowInterface;
+use PHPOS\Architecture\Register\RegisterType;
+use PHPOS\Operation\Int_;
+use PHPOS\Operation\Mov;
+use PHPOS\OS\Instruction;
+use PHPOS\OS\InstructionInterface;
+use PHPOS\Service\BaseService;
+use PHPOS\Service\BIOS\BIOS;
+use PHPOS\Service\ServiceInterface;
+use PHPOS\Service\ServiceManagerInterface;
+
+class PrintNewLine implements ServiceInterface
+{
+    use BaseService;
+
+    public function process(ServiceManagerInterface $serviceManager): InstructionInterface
+    {
+        $registers = $this->code->architecture()->runtime()->registers();
+        $ax = $registers->get(RegisterType::ACCUMULATOR_BITS_16);
+        assert($ax instanceof DataRegisterWithHighAndLowInterface);
+
+        return (new Instruction($this->code, $serviceManager))
+            ->label(
+                $this->label(),
+                fn (InstructionInterface $instruction) => $instruction
+                    ->append(Mov::class, $ax->high(), 0x0E)
+                    ->append(Mov::class, $ax->low(), 0x0D)
+                    ->append(Int_::class, BIOS::VIDEO_INTERRUPT->value)
+
+                    ->append(Mov::class, $ax->high(), 0x0E)
+                    ->append(Mov::class, $ax->low(), 0x0A)
+                    ->append(Int_::class, BIOS::VIDEO_INTERRUPT->value)
+            );
+    }
+}

src/Service/BIOS/IO/ReadString/ReadString.php

@@ -7,6 +7,7 @@
 use PHPOS\Architecture\Register\DataRegisterWithHighAndLowInterface;
 use PHPOS\Architecture\Register\IndexRegisterInterface;
 use PHPOS\Architecture\Register\RegisterType;
+use PHPOS\Operation\Call;
 use PHPOS\Operation\Cmp;
 use PHPOS\Operation\Inc;
 use PHPOS\Operation\Int_;
@@ -64,6 +65,8 @@ public function process(ServiceManagerInterface $serviceManager): InstructionInt
                 $this->label(),
                 fn (InstructionInterface $instruction) => $instruction
                     ->append(Mov::class, $di->index(), $buffer->name())
+                    ->append(Call::class, $this->label() . '_char_read')
+                    ->append(Jmp::class, $this->label() . '_done')
                     ->label(
                         $this->label() . '_char_read',
                         fn (InstructionInterface $instruction) => $instruction
@@ -87,6 +90,7 @@ public function process(ServiceManagerInterface $serviceManager): InstructionInt
                                     ->append(Ret::class),
                             )
                     ),
-            );
+            )
+            ->label($this->label() . '_done');
     }
 }

src/Service/BIOS/VESABIOSExtension/TextMode.php

@@ -0,0 +1,36 @@
+<?php
+
+declare(strict_types=1);
+
+namespace PHPOS\Service\BIOS\VESABIOSExtension;
+
+use PHPOS\Architecture\Register\DataRegisterWithHighAndLowInterface;
+use PHPOS\Architecture\Register\RegisterType;
+use PHPOS\Operation\Int_;
+use PHPOS\Operation\Mov;
+use PHPOS\OS\Instruction;
+use PHPOS\OS\InstructionInterface;
+use PHPOS\Service\BaseService;
+use PHPOS\Service\BIOS\BIOS;
+use PHPOS\Service\ServiceInterface;
+use PHPOS\Service\ServiceManagerInterface;
+
+class TextMode implements ServiceInterface
+{
+    use BaseService;
+
+    public function process(ServiceManagerInterface $serviceManager): InstructionInterface
+    {
+        $registers = $this->code->architecture()->runtime()->registers();
+        $ax = $registers->get(RegisterType::ACCUMULATOR_BITS_16);
+        assert($ax instanceof DataRegisterWithHighAndLowInterface);
+
+        return (new Instruction($this->code, $serviceManager))
+            ->label(
+                $this->label(),
+                fn (InstructionInterface $instruction) => $instruction
+                    ->append(Mov::class, $ax->value(), 0x03)
+                    ->append(Int_::class, BIOS::VIDEO_INTERRUPT->value)
+            );
+    }
+}