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[PULL,v3,42/44] tests/tcg: mips: Test R5900 three-operand MADD1

Message ID 1546535297-11040-43-git-send-email-aleksandar.markovic@rt-rk.com (mailing list archive)
State New, archived
Headers show
Series [PULL,v3,01/44] MAINTAINERS: target/mips: Add MIPS files under default-configs directory | expand

Commit Message

Aleksandar Markovic Jan. 3, 2019, 5:08 p.m. UTC 
From: Fredrik Noring <noring@nocrew.org>

Test R5900 three-operand MADD1.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Fredrik Noring <noring@nocrew.org>
---
 tests/tcg/mips/mipsr5900/madd.c | 43 ++++++++++++++++++++++++++++++++++++-----
 1 file changed, 38 insertions(+), 5 deletions(-)
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Patch

diff --git a/tests/tcg/mips/mipsr5900/madd.c b/tests/tcg/mips/mipsr5900/madd.c
index 9ad2ea6..f6f215e 100644
--- a/tests/tcg/mips/mipsr5900/madd.c
+++ b/tests/tcg/mips/mipsr5900/madd.c
@@ -1,5 +1,5 @@ 
 /*
- * Test R5900-specific three-operand MADD.
+ * Test R5900-specific three-operand MADD and MADD1.
  */
 
 #include <stdio.h>
@@ -29,12 +29,45 @@  int64_t madd(int64_t a, int32_t rs, int32_t rt)
     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(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);
+    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()