From: Fredrik Noring <nor...@nocrew.org>
Test R5900 three-operand MADD.
Reviewed-by: Aleksandar Markovic <amarko...@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarko...@wavecomp.com>
Signed-off-by: Fredrik Noring <nor...@nocrew.org>
---
tests/tcg/mips/mipsr5900/Makefile | 1 +
tests/tcg/mips/mipsr5900/madd.c | 45 +++++++++++++++++++++++++++++++++++++++
2 files changed, 46 insertions(+)
create mode 100644 tests/tcg/mips/mipsr5900/madd.c
diff --git a/tests/tcg/mips/mipsr5900/Makefile
b/tests/tcg/mips/mipsr5900/Makefile
index a1c388b..97ca2a6 100644
--- a/tests/tcg/mips/mipsr5900/Makefile
+++ b/tests/tcg/mips/mipsr5900/Makefile
@@ -10,6 +10,7 @@ CFLAGS = -Wall -mabi=32 -march=r5900 -static
TESTCASES = div1.tst
TESTCASES += divu1.tst
+TESTCASES += madd.tst
TESTCASES += mflohi1.tst
TESTCASES += mtlohi1.tst
TESTCASES += mult.tst
diff --git a/tests/tcg/mips/mipsr5900/madd.c b/tests/tcg/mips/mipsr5900/madd.c
new file mode 100644
index 0000000..9ad2ea6
--- /dev/null
+++ b/tests/tcg/mips/mipsr5900/madd.c
@@ -0,0 +1,45 @@
+/*
+ * Test R5900-specific three-operand MADD.
+ */
+
+#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;
+}
+
+static void verify_madd(int64_t a, int32_t rs, int32_t rt, int64_t expected)
+{
+ assert(madd(a, rs, rt) == expected);
+ assert(madd(a, -rs, rt) == a + a - expected);
+ assert(madd(a, rs, -rt) == a + a - expected);
+ assert(madd(a, -rs, -rt) == expected);
+}
+
+int main()
+{
+ verify_madd(13, 17, 19, 336);
+
+ return 0;
+}
--
2.7.4
