1 files changed, 70 insertions, 0 deletions
diff --git a/tests/tcg/mips/user/isa/r5900/test_r5900_maddu.c b/tests/tcg/mips/user/isa/r5900/test_r5900_maddu.c
new file mode 100644
index 0000000000..30936fb2b4
--- /dev/null
+++ b/tests/tcg/mips/user/isa/r5900/test_r5900_maddu.c
@@ -0,0 +1,70 @@
+/*
+ * Test R5900-specific three-operand MADDU and MADDU1.
+ */
+
+#include <stdio.h>
+#include <inttypes.h>
+#include <assert.h>
+
+uint64_t maddu(uint64_t a, uint32_t rs, uint32_t rt)
+{
+    uint32_t lo = a;
+    uint32_t hi = a >> 32;
+    uint32_t rd;
+    uint64_t r;
+
+    __asm__ __volatile__ (
+            "    mtlo  %5\n"
+            "    mthi  %6\n"
+            "    maddu %0, %3, %4\n"
+            "    mflo  %1\n"
+            "    mfhi  %2\n"
+            : "=r" (rd), "=r" (lo), "=r" (hi)
+            : "r" (rs), "r" (rt), "r" (lo), "r" (hi));
+    r = ((uint64_t)hi << 32) | (uint32_t)lo;
+
+    assert(a + (uint64_t)rs * rt == r);
+    assert(rd == lo);
+
+    return r;
+}
+
+uint64_t maddu1(uint64_t a, uint32_t rs, uint32_t rt)
+{
+    uint32_t lo = a;
+    uint32_t hi = a >> 32;
+    uint32_t rd;
+    uint64_t r;
+
+    __asm__ __volatile__ (
+            "    mtlo1  %5\n"
+            "    mthi1  %6\n"
+            "    maddu1 %0, %3, %4\n"
+            "    mflo1  %1\n"
+            "    mfhi1  %2\n"
+            : "=r" (rd), "=r" (lo), "=r" (hi)
+            : "r" (rs), "r" (rt), "r" (lo), "r" (hi));
+    r = ((uint64_t)hi << 32) | (uint32_t)lo;
+
+    assert(a + (uint64_t)rs * rt == r);
+    assert(rd == lo);
+
+    return r;
+}
+
+static int64_t maddu_variants(int64_t a, int32_t rs, int32_t rt)
+{
+    int64_t rd  = maddu(a, rs, rt);
+    int64_t rd1 = maddu1(a, rs, rt);
+
+    assert(rd == rd1);
+
+    return rd;
+}
+
+int main()
+{
+    assert(maddu_variants(13, 17, 19) == 336);
+
+    return 0;
+}