Added all code for integrity check transform

syzygy/experimental/protect/protect_lib/equation_gen.h

+#ifndef SYZYGY_PROTECT_PROTECT_LIB_EQUATION_GEN_H_
+#define SYZYGY_PROTECT_PROTECT_LIB_EQUATION_GEN_H_
+
+#include <vector>
+
+#include "syzygy/assm/assembler.h"
+#include "syzygy/assm/assembler_base.h"
+#include "syzygy/block_graph/basic_block_subgraph.h"
+#include "syzygy/block_graph/basic_block_assembler.h"
+
+class Equation {
+public:
+  // Maximum of 2 unknown variables
+  std::vector<int> x_exp;
+  std::vector<int> x_coef;
+  std::vector<int> y_exp;
+  std::vector<int> y_coef;
+
+  Equation(std::vector<int> x_exp, std::vector<int> x_coef,
+    std::vector<int> y_exp, std::vector<int> y_coef) :
+    x_exp(x_exp), x_coef(x_coef), y_exp(y_exp), y_coef(y_coef) {};
+
+  assm::ConditionCode Generate(block_graph::BasicBlockAssembler &assm,
+                               std::vector<assm::Register32> &temp_regs,
+                                                           std::vector<assm::Register32> &source_regs);
+};
+
+#endif  // SYZYGY_PROTECT_PROTECT_LIB_EQUATION_CHECKER_H_