Refactor tests and add a few more

bindings/java/tests/RegTests.java

@@ -0,0 +1,50 @@
+package tests;
+
+import static org.junit.Assert.assertEquals;
+
+import org.junit.Test;
+
+import unicorn.Unicorn;
+import unicorn.X86_Float80;
+
+public class RegTests {
+    @Test
+    public void testX86ReadFloat80() {
+        // fldl2e; fsin
+        final byte[] X86_CODE = { -39, -22, -39, -2 };
+
+        long ADDRESS = 0x100000;
+
+        Unicorn u = new Unicorn(Unicorn.UC_ARCH_X86, Unicorn.UC_MODE_32);
+        u.mem_map(ADDRESS, 2 * 1024 * 1024, Unicorn.UC_PROT_ALL);
+        u.mem_write(ADDRESS, X86_CODE);
+        u.emu_start(ADDRESS, ADDRESS + X86_CODE.length, 0, 0);
+        X86_Float80 reg1 =
+            (X86_Float80) u.reg_read(Unicorn.UC_X86_REG_ST0, null);
+        X86_Float80 reg2 =
+            (X86_Float80) u.reg_read(Unicorn.UC_X86_REG_FP7, null);
+        assertEquals(null, ADDRESS, ADDRESS, ADDRESS);
+        assertEquals(Math.sin(Math.log(Math.E) / Math.log(2)), reg1.toDouble(),
+            1e-12);
+        assertEquals(reg1.toDouble(), reg2.toDouble(), 1e-12);
+        u.close();
+    }
+
+    @Test
+    public void testX86WriteFloat80() {
+        // fsin
+        final byte[] X86_CODE = { -39, -2 };
+
+        long ADDRESS = 0x100000;
+
+        Unicorn u = new Unicorn(Unicorn.UC_ARCH_X86, Unicorn.UC_MODE_32);
+        u.mem_map(ADDRESS, 2 * 1024 * 1024, Unicorn.UC_PROT_ALL);
+        u.mem_write(ADDRESS, X86_CODE);
+        X86_Float80 reg = X86_Float80.fromDouble(-1.1);
+        u.reg_write(Unicorn.UC_X86_REG_ST0, reg);
+        u.emu_start(ADDRESS, ADDRESS + X86_CODE.length, 0, 0);
+        reg = (X86_Float80) u.reg_read(Unicorn.UC_X86_REG_ST0, null);
+        assertEquals(Math.sin(-1.1), reg.toDouble(), 1e-12);
+        u.close();
+    }
+}