1 files changed, 76 insertions, 0 deletions
diff --git a/tests/tcg/cris/libc/check_swap.c b/tests/tcg/cris/libc/check_swap.c
new file mode 100644
index 0000000000..9a68c1e5d7
--- /dev/null
+++ b/tests/tcg/cris/libc/check_swap.c
@@ -0,0 +1,76 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include "sys.h"
+#include "crisutils.h"
+
+#define N 8
+#define W 4
+#define B 2
+#define R 1
+
+static always_inline int cris_swap(const int mode, int x)
+{
+	switch (mode)
+	{
+		case N: asm ("swapn\t%0\n" : "+r" (x) : "0" (x)); break;
+		case W: asm ("swapw\t%0\n" : "+r" (x) : "0" (x)); break;
+		case B: asm ("swapb\t%0\n" : "+r" (x) : "0" (x)); break;
+		case R: asm ("swapr\t%0\n" : "+r" (x) : "0" (x)); break;
+		case B|R: asm ("swapbr\t%0\n" : "+r" (x) : "0" (x)); break;
+		case W|R: asm ("swapwr\t%0\n" : "+r" (x) : "0" (x)); break;
+		case W|B: asm ("swapwb\t%0\n" : "+r" (x) : "0" (x)); break;
+		case W|B|R: asm ("swapwbr\t%0\n" : "+r" (x) : "0" (x)); break;
+		case N|R: asm ("swapnr\t%0\n" : "+r" (x) : "0" (x)); break;
+		case N|B: asm ("swapnb\t%0\n" : "+r" (x) : "0" (x)); break;
+		case N|B|R: asm ("swapnbr\t%0\n" : "+r" (x) : "0" (x)); break;
+		case N|W: asm ("swapnw\t%0\n" : "+r" (x) : "0" (x)); break;
+		default:
+			err();
+			break;
+	}
+	return x;
+}
+
+/* Made this a macro to be able to pick up the location of the errors.  */
+#define verify_swap(mode, val, expected, n, z)          \
+do {                                                    \
+        int r;                                          \
+        cris_tst_cc_init();                             \
+	r = cris_swap(mode, val);                       \
+        cris_tst_mov_cc(n, z);                          \
+	if (r != expected)                              \
+		err();                                  \
+} while(0)
+
+void check_swap(void)
+{
+	/* Some of these numbers are borrowed from GDB's cris sim
+	   testsuite.  */
+	if (cris_swap(N, 0) != 0xffffffff)
+		err();
+	if (cris_swap(W, 0x12345678) != 0x56781234)
+		err();
+	if (cris_swap(B, 0x12345678) != 0x34127856)
+		err();
+
+	verify_swap(R, 0x78134452, 0x1ec8224a, 0, 0);
+	verify_swap(B, 0x78134452, 0x13785244, 0, 0);
+	verify_swap(B|R, 0x78134452, 0xc81e4a22, 1, 0);
+	verify_swap(W, 0x78134452, 0x44527813, 0, 0);
+	verify_swap(W|R, 0x78134452, 0x224a1ec8, 0, 0);
+	verify_swap(W|B|R, 0x78134452, 0x4a22c81e, 0, 0);
+	verify_swap(N, 0x78134452, 0x87ecbbad, 1, 0);
+	verify_swap(N|R, 0x78134452, 0xe137ddb5, 1, 0);
+	verify_swap(N|B, 0x78134452, 0xec87adbb, 1, 0);
+	verify_swap(N|B|R, 0x78134452, 0x37e1b5dd, 0, 0);
+	verify_swap(N|W, 0x78134452, 0xbbad87ec, 1, 0);
+	verify_swap(N|B|R, 0xffffffff, 0, 0, 1);
+}
+
+int main(void)
+{
+	check_swap();
+	pass();
+	return 0;
+}