Initial 80386 microcode commit.

80386/disassembler/include/alfe/stack.h

@@ -0,0 +1,68 @@
+#include "alfe/main.h"
+
+#ifndef INCLUDED_STACK_H
+#define INCLUDED_STACK_H
+
+template<class T> class Stack
+{
+public:
+    Stack() : _top(0), _n(0) { }
+    ~Stack()
+    {
+        while (!empty())
+            pop();
+    }
+    void push(T t)
+    {
+        Entry* top = _top;
+        _top = new Entry(t);
+        _top->_next = top;
+        ++_n;
+    }
+    void toArray(Array<T>* array)
+    {
+        array->allocate(_n);
+        for (int i = _n - 1; i >= 0; --i)
+            (*array)[i] = pop();
+    }
+    T pop()
+    {
+        T t = top();
+        Entry* top = _top;
+        _top = top->_next;
+        delete top;
+        --_n;
+        return t;
+    }
+    T value(int offset) const
+    {
+        Entry* top = _top;
+        while (offset > 0) {
+            --offset;
+            top = top->_next;
+        }
+        return top->_t;
+    }
+    T top() const { return _top->_t; }
+    T fromTop(int n) const
+    {
+        Entry* top = _top;
+        while (n > 0)
+            top = top->_next;
+        return top->_t;
+    }
+    bool empty() const { return _top == 0; }
+private:
+
+    class Entry
+    {
+    public:
+        Entry(T t) : _t(t) { }
+        T _t;
+        Entry* _next;
+    };
+    Entry* _top;
+    int _n;
+};
+
+#endif // INCLUDED_STACK_H