add lightening jit

1 files changed, 28 insertions, 0 deletions

diff --git a/deps/lightening/tests/ldr_atomic.c b/deps/lightening/tests/ldr_atomic.c
new file mode 100644
index 0000000..73a8c0f
--- /dev/null
+++ b/deps/lightening/tests/ldr_atomic.c
@@ -0,0 +1,28 @@
+#include "test.h"
+
+static long data[] = { 0x0f0f0f0f, 0x00000000, 0x42424242 };
+
+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, 0, 0, 0);
+  jit_load_args_1(j, jit_operand_gpr (JIT_OPERAND_ABI_POINTER, JIT_R1));
+
+  /* atm does not test for actual atomicity, just that no segfaults etc happen */
+  jit_ldr_atomic(j, JIT_R0, JIT_R1);
+  jit_leave_jit_abi(j, 0, 0, align);
+  jit_retr(j, JIT_R0);
+
+  jit_uword_t (*f)(void*) = jit_end(j, NULL);
+
+  ASSERT(f(&data[0]) == 0x0f0f0f0f);
+  ASSERT(f(&data[1]) == 0);
+  ASSERT(f(&data[2]) == 0x42424242);
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}