Preliminary tests for sim-alu module.

1 files changed, 100 insertions, 0 deletions

diff --git a/sim/testsuite/common/alu-tst.c b/sim/testsuite/common/alu-tst.c
new file mode 100644
index 0000000..f03ebd5
--- /dev/null
+++ b/sim/testsuite/common/alu-tst.c
@@ -0,0 +1,100 @@
+#define WITH_TARGET_WORD_MSB 0
+#define WITH_TARGET_WORD_BITSIZE 64
+#define WITH_HOST_WORD_BITSIZE (sizeof (int) * 8)
+
+#define ASSERT(EXPRESSION) \
+{ \
+  if (!(EXPRESSION)) { \
+    fprintf (stderr, "%s:%d: assertion failed - %s\n", \
+             __FILE__, __LINE__, #EXPRESSION); \
+    abort (); \
+  } \
+}
+
+#define SIM_BITS_INLINE (INCLUDE_MODULE | INCLUDED_BY_MODULE)
+
+#include "sim-basics.h"
+#include "sim-types.h"
+#include "sim-bits.h"
+
+#include "sim-alu.h"
+
+#include <stdio.h>
+
+
+typedef struct {
+  char *op;
+  unsigned64 arg;
+} alu_op;
+
+typedef struct {
+  unsigned64 begin;
+  alu_op ops[3];
+  unsigned64 result;
+  int carry;
+  int overflow;
+} alu_test;
+
+#define MAX_INT16 (32767)
+#define MIN_INT16 (32768)
+
+const alu_test alu16_tests[] = {
+  /* */
+  { MAX_INT16, { { "ADD", 1 }, }, MIN_INT16, 0, 1, },
+  { MIN_INT16, { { "ADD", -1 }, }, MAX_INT16, 1, 1, },
+  { MAX_INT16, { { "ADD", MIN_INT16 }, }, -1, 0, 0, },
+  { MIN_INT16, { { "ADD", MAX_INT16 }, }, -1, 0, 0, },
+  { MAX_INT16, { { "ADD", MAX_INT16 }, }, MAX_INT16 * 2, 0, 1, },
+  { MIN_INT16, { { "ADD", MIN_INT16 }, }, 0, 1, 1, },
+  /* */
+  { 0, { { "SUB", MIN_INT16 }, }, MIN_INT16, 0, 1, },
+  { MAX_INT16, { { "SUB", MAX_INT16 }, }, 0, 0, 0, },
+};
+
+
+static void
+print_hex (unsigned64 val, int nr_bits)
+{
+  switch (nr_bits)
+    {
+    case 16:
+      printf ("0x%04lx", (long) (unsigned16) (val));
+      break;
+    case 32:
+      printf ("0x%08lx", (long) (unsigned32) (val));
+      break;
+    case 64:
+      printf ("0x%08lx%08lx",
+	      (long) (unsigned32) (val >> 32),
+	      (long) (unsigned32) (val));
+    default:
+      abort ();
+    }
+}
+
+
+int errors = 0;
+
+
+#define N 16
+#include "alu-n-tst.h"
+#undef N
+
+#if 0
+#define N 32
+#include "alu-n-tst.h"
+#undef N
+
+#define N 64
+#include "alu-n-tst.h"
+#undef N
+#endif
+
+int
+main ()
+{
+  int i;
+  for (i = 0; i < sizeof (alu16_tests) / sizeof (*alu16_tests); i++)
+    do_op_16 (alu16_tests + i);
+  return (errors != 0);
+}