start adding tests

1 files changed, 47 insertions, 0 deletions

diff --git a/tests/qmulr_u.c b/tests/qmulr_u.c
new file mode 100644
index 0000000..3840c92
--- /dev/null
+++ b/tests/qmulr_u.c
@@ -0,0 +1,47 @@
+#include "test.h"
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+	jit_begin(j, arena_base, arena_size);
+
+	size_t align = jit_enter_jit_abi(j, 3, 0, 0);
+
+	jit_operand_t args[] =
+	{ jit_operand_gpr (JIT_OPERAND_ABI_POINTER, JIT_R0),
+	  jit_operand_gpr (JIT_OPERAND_ABI_POINTER, JIT_R1),
+	  jit_operand_gpr (JIT_OPERAND_ABI_WORD, JIT_R2),
+	  jit_operand_gpr (JIT_OPERAND_ABI_WORD, JIT_V0) };
+	jit_load_args(j, 4, args);
+
+	jit_qmulr_u(j, JIT_V1, JIT_V2, JIT_R2, JIT_V0);
+	jit_str(j, JIT_R0, JIT_V1);
+	jit_str(j, JIT_R1, JIT_V2);
+
+	jit_leave_jit_abi(j, 3, 0, align);
+
+	jit_ret(j);
+
+	size_t size = 0;
+	void* ret = jit_end(j, &size);
+
+	void (*f)(jit_word_t*, jit_word_t*, jit_word_t, jit_word_t) = ret;
+
+#define UQMUL(a, b, c, d)                                                 \
+	do {                                                              \
+		jit_word_t C = 0, D = 0; f(&C, &D, a, b); ASSERT(C == c); \
+		ASSERT(D == d);                                           \
+	} while (0)
+
+#if EJIT_WORDSIZE == 32
+	UQMUL(0xffffff, 0xffffff, 0xfe000001, 0xffff);
+#else
+	UQMUL(0xffffffffff, 0xffffffffff, 0xfffffe0000000001, 0xffff);
+#endif
+}
+
+int
+main (int argc, char *argv[])
+{
+	return main_helper(argc, argv, run_test);
+}