tests/tcg/xtensa: add FPU2000 coprocessor tests

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>

tests/tcg/xtensa/Makefile

@@ -42,6 +42,7 @@ TESTCASES += test_flix.tst
 TESTCASES += test_fp0_arith.tst
 TESTCASES += test_fp0_conv.tst
 TESTCASES += test_fp1.tst
+TESTCASES += test_fp_cpenable.tst
 TESTCASES += test_interrupt.tst
 TESTCASES += test_loop.tst
 TESTCASES += test_lsc.tst

tests/tcg/xtensa/test_fp_cpenable.S

@@ -0,0 +1,27 @@
+#include "macros.inc"
+
+test_suite fp_cpenable
+
+#if XCHAL_HAVE_FP
+
+test rur
+    set_vector kernel, 2f
+    movi    a2, 0
+    wsr     a2, cpenable
+    isync
+1:
+    rur     a2, fsr
+    //wfr     f0, a2
+    test_fail
+2:
+    movi    a2, 1b
+    rsr     a3, epc1
+    assert  eq, a2, a3
+    movi    a2, 32
+    rsr     a3, exccause
+    assert  eq, a2, a3
+test_end
+
+#endif
+
+test_suite_end