1 files changed, 78 insertions, 0 deletions
diff --git a/tests/tcg/mips/mipsr5900/madd.c b/tests/tcg/mips/mipsr5900/madd.c
new file mode 100644
index 0000000000..f6f215e1c3
--- /dev/null
+++ b/tests/tcg/mips/mipsr5900/madd.c
@@ -0,0 +1,78 @@
+/*
+ * Test R5900-specific three-operand MADD and MADD1.
+ */
+
+#include <stdio.h>
+#include <inttypes.h>
+#include <assert.h>
+
+int64_t madd(int64_t a, int32_t rs, int32_t rt)
+{
+    int32_t lo = a;
+    int32_t hi = a >> 32;
+    int32_t rd;
+    int64_t r;
+
+    __asm__ __volatile__ (
+            "    mtlo %5\n"
+            "    mthi %6\n"
+            "    madd %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 = ((int64_t)hi << 32) | (uint32_t)lo;
+
+    assert(a + (int64_t)rs * rt == r);
+    assert(rd == lo);
+
+    return r;
+}
+
+int64_t madd1(int64_t a, int32_t rs, int32_t rt)
+{
+    int32_t lo = a;
+    int32_t hi = a >> 32;
+    int32_t rd;
+    int64_t r;
+
+    __asm__ __volatile__ (
+            "    mtlo1 %5\n"
+            "    mthi1 %6\n"
+            "    madd1 %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 = ((int64_t)hi << 32) | (uint32_t)lo;
+
+    assert(a + (int64_t)rs * rt == r);
+    assert(rd == lo);
+
+    return r;
+}
+
+static int64_t madd_variants(int64_t a, int32_t rs, int32_t rt)
+{
+    int64_t rd  = madd(a, rs, rt);
+    int64_t rd1 = madd1(a, rs, rt);
+
+    assert(rd == rd1);
+
+    return rd;
+}
+
+static void verify_madd(int64_t a, int32_t rs, int32_t rt, int64_t expected)
+{
+    assert(madd_variants(a, rs, rt) == expected);
+    assert(madd_variants(a, -rs, rt) == a + a - expected);
+    assert(madd_variants(a, rs, -rt) == a + a - expected);
+    assert(madd_variants(a, -rs, -rt) == expected);
+}
+
+int main()
+{
+    verify_madd(13, 17, 19, 336);
+
+    return 0;
+}