tests/tcg/xtensa: add DFP0 arithmetic tests

Add test for basic double precision opcode properties.

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

1 files changed, 162 insertions, 0 deletions

diff --git a/tests/tcg/xtensa/test_dfp0_arith.S b/tests/tcg/xtensa/test_dfp0_arith.S
new file mode 100644
index 0000000..53bf812
--- /dev/null
+++ b/tests/tcg/xtensa/test_dfp0_arith.S
@@ -0,0 +1,162 @@
+#include "macros.inc"
+#include "fpu.h"
+
+test_suite fp0_arith
+
+#if XCHAL_HAVE_DFP
+
+.macro movfp fr, v
+    movi    a2, ((\v) >> 32) & 0xffffffff
+    movi    a3, ((\v) & 0xffffffff)
+    wfrd    \fr, a2, a3
+.endm
+
+.macro check_res fr, r, sr
+    rfrd    a2, \fr
+    dump    a2
+    movi    a3, ((\r) >> 32) & 0xffffffff
+    assert  eq, a2, a3
+    rfr    a2, \fr
+    dump    a2
+    movi    a3, ((\r) & 0xffffffff)
+    assert  eq, a2, a3
+    rur     a2, fsr
+    movi    a3, \sr
+    assert  eq, a2, a3
+.endm
+
+test add_d
+    movi    a2, 1
+    wsr     a2, cpenable
+
+    /* MAX_FLOAT + MAX_FLOAT = +inf/MAX_FLOAT  */
+    test_op2 add.d, f6, f7, f8, F64_MAX, F64_MAX, \
+        F64_PINF, F64_MAX, F64_PINF, F64_MAX, \
+          FSR_OI,  FSR_OI,   FSR_OI,  FSR_OI
+test_end
+
+test add_d_inf
+    /* 1 + +inf = +inf  */
+    test_op2 add.d, f6, f7, f8, F64_1, F64_PINF, \
+        F64_PINF, F64_PINF, F64_PINF, F64_PINF, \
+           FSR__,    FSR__,    FSR__,    FSR__
+
+    /* +inf + -inf = default NaN */
+    test_op2 add.d, f0, f1, f2, F64_PINF, F64_NINF, \
+        F64_DNAN, F64_DNAN, F64_DNAN, F64_DNAN, \
+           FSR_V,    FSR_V,    FSR_V,    FSR_V
+test_end
+
+test add_d_nan_dfpu
+    /* 1 + QNaN = QNaN  */
+    test_op2 add.d, f9, f10, f11, F64_1, F64_QNAN(1), \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR__,       FSR__,       FSR__,       FSR__
+    /* 1 + SNaN = QNaN  */
+    test_op2 add.d, f12, f13, f14, F64_1, F64_SNAN(1), \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR_V,       FSR_V,       FSR_V,       FSR_V
+
+    /* SNaN1 + SNaN2 = QNaN2 */
+    test_op2 add.d, f15, f0, f1, F64_SNAN(1), F64_SNAN(2), \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR_V,       FSR_V,       FSR_V,       FSR_V
+    /* QNaN1 + SNaN2 = QNaN2 */
+    test_op2 add.d, f5, f6, f7, F64_QNAN(1), F64_SNAN(2), \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR_V,       FSR_V,       FSR_V,       FSR_V
+    /* SNaN1 + QNaN2 = QNaN2 */
+    test_op2 add.d, f8, f9, f10, F64_SNAN(1), F64_QNAN(2), \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR_V,       FSR_V,       FSR_V,       FSR_V
+test_end
+
+test sub_d
+    /* norm - norm = denorm */
+    test_op2 sub.d, f6, f7, f8, F64_MIN_NORM | 1, F64_MIN_NORM, \
+        0x00000001, 0x00000001, 0x00000001, 0x00000001, \
+             FSR__,      FSR__,      FSR__,      FSR__
+test_end
+
+test mul_d
+    test_op2 mul.d, f0, f1, f2, F64_1 | 1, F64_1 | 1, \
+        F64_1 | 2, F64_1 | 2, F64_1 | 3, F64_1 | 2, \
+            FSR_I,     FSR_I,     FSR_I,     FSR_I
+    /* MAX_FLOAT/2 * MAX_FLOAT/2 = +inf/MAX_FLOAT  */
+    test_op2 mul.d, f6, f7, f8, F64_MAX_2, F64_MAX_2, \
+        F64_PINF, F64_MAX, F64_PINF, F64_MAX, \
+          FSR_OI,  FSR_OI,   FSR_OI,  FSR_OI
+    /* min norm * min norm = 0/denorm */
+    test_op2 mul.d, f6, f7, f8, F64_MIN_NORM, F64_MIN_NORM, \
+         F64_0,  F64_0, 0x00000001,  F64_0, \
+        FSR_UI, FSR_UI,     FSR_UI, FSR_UI
+    /* inf * 0 = default NaN */
+    test_op2 mul.d, f6, f7, f8, F64_PINF, F64_0, \
+        F64_DNAN, F64_DNAN, F64_DNAN, F64_DNAN, \
+           FSR_V,    FSR_V,    FSR_V,    FSR_V
+test_end
+
+test madd_d
+    test_op3 madd.d, f0, f1, f2, f0, F64_0, F64_1 | 1, F64_1 | 1, \
+        F64_1 | 2, F64_1 | 2, F64_1 | 3, F64_1 | 2, \
+            FSR_I,     FSR_I,     FSR_I,     FSR_I
+test_end
+
+test madd_d_precision
+    test_op3 madd.d, f0, f1, f2, f0, \
+        F64_MINUS | F64_1 | 2, F64_1 | 1, F64_1 | 1, \
+        0x3970000000000000, 0x3970000000000000, 0x3970000000000000, 0x3970000000000000, \
+             FSR__,      FSR__,      FSR__,      FSR__
+test_end
+
+test madd_d_nan_dfpu
+    /* DFPU madd/msub NaN1, NaN2, NaN3 priority: NaN1, NaN3, NaN2 */
+    test_op3 madd.d, f0, f1, f2, f0, F64_QNAN(1), F64_1, F64_1, \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR__,       FSR__,       FSR__,       FSR__
+    test_op3 madd.d, f0, f1, f2, f0, F64_1, F64_QNAN(2), F64_1, \
+        F64_QNAN(2), F64_QNAN(2), F64_QNAN(2), F64_QNAN(2), \
+              FSR__,       FSR__,       FSR__,       FSR__
+    test_op3 madd.d, f0, f1, f2, f0, F64_1, F64_1, F64_QNAN(3), \
+        F64_QNAN(3), F64_QNAN(3), F64_QNAN(3), F64_QNAN(3), \
+              FSR__,       FSR__,       FSR__,       FSR__
+
+    test_op3 madd.d, f0, f1, f2, f0, F64_QNAN(1), F64_QNAN(2), F64_1, \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR__,       FSR__,       FSR__,       FSR__
+    test_op3 madd.d, f0, f1, f2, f0, F64_QNAN(1), F64_1, F64_QNAN(3), \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR__,       FSR__,       FSR__,       FSR__
+    test_op3 madd.d, f0, f1, f2, f0, F64_1, F64_QNAN(2), F64_QNAN(3), \
+        F64_QNAN(3), F64_QNAN(3), F64_QNAN(3), F64_QNAN(3), \
+              FSR__,       FSR__,       FSR__,       FSR__
+
+    test_op3 madd.d, f0, f1, f2, f0, F64_QNAN(1), F64_QNAN(2), F64_QNAN(3), \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR__,       FSR__,       FSR__,       FSR__
+
+    /* inf * 0 = default NaN */
+    test_op3 madd.d, f0, f1, f2, f0, F64_1, F64_PINF, F64_0, \
+        F64_DNAN, F64_DNAN, F64_DNAN, F64_DNAN, \
+           FSR_V,    FSR_V,    FSR_V,    FSR_V
+    /* inf * 0 + SNaN1 = QNaN1 */
+    test_op3 madd.d, f0, f1, f2, f0, F64_SNAN(1), F64_PINF, F64_0, \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR_V,       FSR_V,       FSR_V,       FSR_V
+    /* inf * 0 + QNaN1 = QNaN1 */
+    test_op3 madd.d, f0, f1, f2, f0, F64_QNAN(1), F64_PINF, F64_0, \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR_V,       FSR_V,       FSR_V,       FSR_V
+
+    /* madd/msub SNaN turns to QNaN and sets Invalid flag */
+    test_op3 madd.d, f0, f1, f2, f0, F64_SNAN(1), F64_1, F64_1, \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR_V,       FSR_V,       FSR_V,       FSR_V
+    test_op3 madd.d, f0, f1, f2, f0, F64_QNAN(1), F64_SNAN(2), F64_1, \
+        F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), F64_QNAN(1), \
+              FSR_V,       FSR_V,       FSR_V,       FSR_V
+test_end
+
+#endif
+
+test_suite_end