From e3c3840bc6430659d355ca929ce46482d19ecbf6 Mon Sep 17 00:00:00 2001
From: Torsten Ruger <torsten@villataika.fi>
Date: Sat, 4 Oct 2014 12:51:08 +0300
Subject: [PATCH] a creative moment, making up instructions

---
 lib/register/instructions/function_return.rb   | 13 +++++++++++++
 lib/register/instructions/register_transfer.rb | 12 ++++++++++++
 lib/register/instructions/save_return.rb       | 13 +++++++++++++
 3 files changed, 38 insertions(+)
 create mode 100644 lib/register/instructions/function_return.rb
 create mode 100644 lib/register/instructions/register_transfer.rb
 create mode 100644 lib/register/instructions/save_return.rb

diff --git a/lib/register/instructions/function_return.rb b/lib/register/instructions/function_return.rb
new file mode 100644
index 00000000..5a89e5bc
--- /dev/null
+++ b/lib/register/instructions/function_return.rb
@@ -0,0 +1,13 @@
+module Register
+
+  # return from a function call
+  #register and index specify where the return address is stored
+
+  class FunctionReturn < Instruction
+    def initialize register , index
+      @register = register
+      @index = index
+    end
+    attr_reader :register , :index
+  end
+end
\ No newline at end of file
diff --git a/lib/register/instructions/register_transfer.rb b/lib/register/instructions/register_transfer.rb
new file mode 100644
index 00000000..e55386d2
--- /dev/null
+++ b/lib/register/instructions/register_transfer.rb
@@ -0,0 +1,12 @@
+module Register
+
+  #transfer the constents of one register to another. possibly called move in some cpus
+
+  class RegisterTransfer < Instruction
+    def initialize from , to
+      @from = from
+      @to = to
+    end
+    attr_reader :from, :to
+  end
+end
\ No newline at end of file
diff --git a/lib/register/instructions/save_return.rb b/lib/register/instructions/save_return.rb
new file mode 100644
index 00000000..494b97d1
--- /dev/null
+++ b/lib/register/instructions/save_return.rb
@@ -0,0 +1,13 @@
+module Register
+
+  # save the return address of a call
+  # register and index specify where the return address is stored
+
+  class SaveReturn < Instruction
+    def initialize register , index
+      @register = register
+      @index = index
+    end
+    attr_reader :register , :index
+  end
+end
\ No newline at end of file