tests/tcg/xtensa: test double precision load/store

Add ldi[p]/sdi[p]/ldx[p]/sdx[p] opcode tests to test_lsc.

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

tests/tcg/xtensa/test_lsc.S

@@ -140,4 +140,127 @@ test_end
 
 #endif
 
+#if XCHAL_HAVE_DFP
+
+#if XCHAL_HAVE_BE
+#define F64_HIGH_OFF 0
+#else
+#define F64_HIGH_OFF 4
+#endif
+
+.macro movdf fr, hi, lo
+    movi    a2, \hi
+    movi    a3, \lo
+    wfrd    \fr, a2, a3
+.endm
+
+test ldi
+    movi    a2, 1
+    wsr     a2, cpenable
+
+    movi    a2, 1f
+    ldi     f1, a2, 8
+    ldi     f2, a2, 16
+    ldip    f0, a2, 16
+    movi    a3, 1f + 16
+    assert  eq, a2, a3
+    rfrd    a2, f0
+    movi    a3, 0x3ff00000
+    assert  eq, a2, a3
+    rfrd    a2, f1
+    movi    a3, 0x40000000
+    assert  eq, a2, a3
+    rfrd    a2, f2
+    movi    a3, 0x40080000
+    assert  eq, a2, a3
+.data
+    .align  8
+1:
+.double 1, 2, 3
+.text
+test_end
+
+test sdi
+    movdf   f3, 0x40800000, 0
+    movdf   f4, 0x40a00000, 0
+    movdf   f5, 0x40c00000, 0
+    movi    a2, 1f
+    sdi     f4, a2, 8
+    sdi     f5, a2, 16
+    sdip    f3, a2, 16
+    movi    a3, 1f + 16
+    assert  eq, a2, a3
+    l32i    a4, a2, -16 + F64_HIGH_OFF
+    movi    a3, 0x40800000
+    assert  eq, a4, a3
+    l32i    a4, a2, -8 + F64_HIGH_OFF
+    movi    a3, 0x40a00000
+    assert  eq, a4, a3
+    l32i    a4, a2, F64_HIGH_OFF
+    movi    a3, 0x40c00000
+    assert  eq, a4, a3
+.data
+    .align  8
+1:
+.double 0, 0, 0
+.text
+test_end
+
+test ldx
+    movi    a2, 1f
+    movi    a3, 0
+    movi    a4, 8
+    movi    a5, 16
+    ldx     f7, a2, a4
+    ldx     f8, a2, a5
+    ldxp    f6, a2, a5
+    movi    a3, 1f + 16
+    assert  eq, a2, a3
+    rfrd    a2, f6
+    movi    a3, 0x401c0000
+    assert  eq, a2, a3
+    rfrd    a2, f7
+    movi    a3, 0x40200000
+    assert  eq, a2, a3
+    rfrd    a2, f8
+    movi    a3, 0x40220000
+    assert  eq, a2, a3
+.data
+    .align  8
+1:
+.double 7, 8, 9
+.text
+test_end
+
+test sdx
+    movdf   f9, 0x41200000, 0
+    movdf   f10, 0x41300000, 0
+    movdf   f11, 0x41400000, 0
+    movi    a2, 1f
+    movi    a3, 0
+    movi    a4, 8
+    movi    a5, 16
+    sdx     f10, a2, a4
+    sdx     f11, a2, a5
+    sdxp    f9, a2, a5
+    movi    a3, 1f + 16
+    assert  eq, a2, a3
+    l32i    a4, a2, -16 + F64_HIGH_OFF
+    movi    a3, 0x41200000
+    assert  eq, a4, a3
+    l32i    a4, a2, -8 + F64_HIGH_OFF
+    movi    a3, 0x41300000
+    assert  eq, a4, a3
+    l32i    a4, a2, F64_HIGH_OFF
+    movi    a3, 0x41400000
+    assert  eq, a4, a3
+.data
+    .align  8
+1:
+.double 0, 0, 0
+.text
+test_end
+
+#endif
+
 test_suite_end