Signed-off-by: Fredrik Noring <nor...@nocrew.org>
---
tests/tcg/mips/mipsr5900/multu.c | 43 ++++++++++++++++++++++++++------
1 file changed, 36 insertions(+), 7 deletions(-)
diff --git a/tests/tcg/mips/mipsr5900/multu.c b/tests/tcg/mips/mipsr5900/multu.c
index 3a59675395..f043904d69 100644
--- a/tests/tcg/mips/mipsr5900/multu.c
+++ b/tests/tcg/mips/mipsr5900/multu.c
@@ -1,5 +1,5 @@
/*
- * Test R5900-specific three-operand MULTU.
+ * Test R5900-specific three-operand MULTU and MULTU1.
*/
#include <stdio.h>
@@ -25,15 +25,44 @@ static uint64_t multu(uint32_t rs, uint32_t rt)
return r;
}
+static uint64_t multu1(uint32_t rs, uint32_t rt)
+{
+ uint32_t rd, lo, hi;
+ uint64_t r;
+
+ __asm__ __volatile__ (
+ " multu1 %0, %3, %4\n"
+ " mflo1 %1\n"
+ " mfhi1 %2\n"
+ : "=r" (rd), "=r" (lo), "=r" (hi)
+ : "r" (rs), "r" (rt));
+ r = ((uint64_t)hi << 32) | (uint32_t)lo;
+
+ assert((uint64_t)rs * rt == r);
+ assert(rd == lo);
+
+ return r;
+}
+
+static uint64_t multu_variants(uint32_t rs, uint32_t rt)
+{
+ uint64_t rd = multu(rs, rt);
+ uint64_t rd1 = multu1(rs, rt);
+
+ assert(rd == rd1);
+
+ return rd;
+}
+
int main()
{
- assert(multu(17, 19) == 323);
- assert(multu(77773, 99991) == 7776600043);
- assert(multu(12207031, 305175781) == 3725290219116211);
+ assert(multu_variants(17, 19) == 323);
+ assert(multu_variants(77773, 99991) == 7776600043);
+ assert(multu_variants(12207031, 305175781) == 3725290219116211);
- assert(multu(0x80000000U, 0x7FFFFFFF) == 0x3FFFFFFF80000000);
- assert(multu(0x80000000U, 0x80000000U) == 0x4000000000000000);
- assert(multu(0xFFFFFFFFU, 0xFFFFFFFFU) == 0xFFFFFFFE00000001U);
+ assert(multu_variants(0x80000000U, 0x7FFFFFFF) == 0x3FFFFFFF80000000);
+ assert(multu_variants(0x80000000U, 0x80000000U) == 0x4000000000000000);
+ assert(multu_variants(0xFFFFFFFFU, 0xFFFFFFFFU) == 0xFFFFFFFE00000001U);
return 0;
}
--
2.18.1
