diff --git a/tests/ldxr_c.c b/tests/ldxr_c.c
new file mode 100644
index 000000000..238e441cf
--- /dev/null
+++ b/tests/ldxr_c.c
@@ -0,0 +1,31 @@
+#include "test.h"
+
+static uint8_t data[] = { 0xff, 0x00, 0x42 };
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+  jit_begin(j, arena_base, arena_size);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_POINTER, JIT_ARG_ABI_INTMAX };
+  jit_arg_t args[2];
+  const jit_anyreg_t regs[] = { { .gpr=JIT_R0 }, { .gpr=JIT_R1 } };
+
+  jit_receive(j, 2, abi, args);
+  jit_load_args(j, 2, abi, args, regs);
+
+  jit_ldxr_c(j, JIT_R0, JIT_R0, JIT_R1);
+  jit_retr(j, JIT_R0);
+
+  uintmax_t (*f)(void*, uintmax_t) = jit_end(j, NULL);
+
+  ASSERT(f(data, 0) == -1);
+  ASSERT(f(data, 1) == 0);
+  ASSERT(f(data, 2) == 0x42);
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}
diff --git a/tests/ldxr_d.c b/tests/ldxr_d.c
new file mode 100644
index 000000000..b79363730
--- /dev/null
+++ b/tests/ldxr_d.c
@@ -0,0 +1,31 @@
+#include "test.h"
+
+static double data[] = { -1.0, 0.0, 0.5 };
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+  jit_begin(j, arena_base, arena_size);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_POINTER, JIT_ARG_ABI_INTMAX };
+  jit_arg_t args[2];
+  const jit_anyreg_t regs[] = { { .gpr=JIT_R0 }, { .gpr=JIT_R1 } };
+
+  jit_receive(j, 2, abi, args);
+  jit_load_args(j, 2, abi, args, regs);
+
+  jit_ldxr_d(j, JIT_F0, JIT_R0, JIT_R1);
+  jit_retr_d(j, JIT_F0);
+
+  double (*f)(void*, uintmax_t) = jit_end(j, NULL);
+
+  ASSERT(f(data, 0) == data[0]);
+  ASSERT(f(data, 8) == data[1]);
+  ASSERT(f(data, 16) == data[2]);
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}
diff --git a/tests/ldxr_f.c b/tests/ldxr_f.c
new file mode 100644
index 000000000..8c865a9b2
--- /dev/null
+++ b/tests/ldxr_f.c
@@ -0,0 +1,31 @@
+#include "test.h"
+
+static float data[] = { -1.0, 0.0, 0.5 };
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+  jit_begin(j, arena_base, arena_size);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_POINTER, JIT_ARG_ABI_INTMAX };
+  jit_arg_t args[2];
+  const jit_anyreg_t regs[] = { { .gpr=JIT_R0 }, { .gpr=JIT_R1 } };
+
+  jit_receive(j, 2, abi, args);
+  jit_load_args(j, 2, abi, args, regs);
+
+  jit_ldxr_f(j, JIT_F0, JIT_R0, JIT_R1);
+  jit_retr_f(j, JIT_F0);
+
+  float (*f)(void*, uintmax_t) = jit_end(j, NULL);
+
+  ASSERT(f(data, 0) == data[0]);
+  ASSERT(f(data, 4) == data[1]);
+  ASSERT(f(data, 8) == data[2]);
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}
diff --git a/tests/ldxr_i.c b/tests/ldxr_i.c
new file mode 100644
index 000000000..fb003204b
--- /dev/null
+++ b/tests/ldxr_i.c
@@ -0,0 +1,31 @@
+#include "test.h"
+
+static uint32_t data[] = { 0xffffffff, 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);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_POINTER, JIT_ARG_ABI_INTMAX };
+  jit_arg_t args[2];
+  const jit_anyreg_t regs[] = { { .gpr=JIT_R0 }, { .gpr=JIT_R1 } };
+
+  jit_receive(j, 2, abi, args);
+  jit_load_args(j, 2, abi, args, regs);
+
+  jit_ldxr_i(j, JIT_R0, JIT_R0, JIT_R1);
+  jit_retr(j, JIT_R0);
+
+  uintmax_t (*f)(void*, uintmax_t) = jit_end(j, NULL);
+
+  ASSERT(f(data, 0) == -1);
+  ASSERT(f(data, 4) == 0);
+  ASSERT(f(data, 8) == 0x42424242);
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}
diff --git a/tests/ldxr_l.c b/tests/ldxr_l.c
new file mode 100644
index 000000000..f139e8e00
--- /dev/null
+++ b/tests/ldxr_l.c
@@ -0,0 +1,33 @@
+#include "test.h"
+
+static uint64_t data[] = { 0xffffffffffffffff, 0, 0x4242424212345678 };
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+#if __WORDSIZE > 32
+  jit_begin(j, arena_base, arena_size);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_POINTER, JIT_ARG_ABI_INTMAX };
+  jit_arg_t args[2];
+  const jit_anyreg_t regs[] = { { .gpr=JIT_R0 }, { .gpr=JIT_R1 } };
+
+  jit_receive(j, 2, abi, args);
+  jit_load_args(j, 2, abi, args, regs);
+
+  jit_ldxr_l(j, JIT_R0, JIT_R0, JIT_R1);
+  jit_retr(j, JIT_R0);
+
+  uintmax_t (*f)(void*, uintmax_t) = jit_end(j, NULL);
+
+  ASSERT(f(data, 0) == -1);
+  ASSERT(f(data, 8) == 0);
+  ASSERT(f(data, 16) == data[2]);
+#endif
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}
diff --git a/tests/ldxr_s.c b/tests/ldxr_s.c
new file mode 100644
index 000000000..8ba44c1ff
--- /dev/null
+++ b/tests/ldxr_s.c
@@ -0,0 +1,31 @@
+#include "test.h"
+
+static uint16_t data[] = { 0xffff, 0x0000, 0x4242 };
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+  jit_begin(j, arena_base, arena_size);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_POINTER, JIT_ARG_ABI_INTMAX };
+  jit_arg_t args[2];
+  const jit_anyreg_t regs[] = { { .gpr=JIT_R0 }, { .gpr=JIT_R1 } };
+
+  jit_receive(j, 2, abi, args);
+  jit_load_args(j, 2, abi, args, regs);
+
+  jit_ldxr_s(j, JIT_R0, JIT_R0, JIT_R1);
+  jit_retr(j, JIT_R0);
+
+  uintmax_t (*f)(void*, uintmax_t) = jit_end(j, NULL);
+
+  ASSERT(f(data, 0) == -1);
+  ASSERT(f(data, 2) == 0);
+  ASSERT(f(data, 4) == 0x4242);
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}
diff --git a/tests/ldxr_uc.c b/tests/ldxr_uc.c
new file mode 100644
index 000000000..b6a3cb142
--- /dev/null
+++ b/tests/ldxr_uc.c
@@ -0,0 +1,31 @@
+#include "test.h"
+
+static uint8_t data[] = { 0xff, 0x00, 0x42 };
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+  jit_begin(j, arena_base, arena_size);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_POINTER, JIT_ARG_ABI_INTMAX };
+  jit_arg_t args[2];
+  const jit_anyreg_t regs[] = { { .gpr=JIT_R0 }, { .gpr=JIT_R1 } };
+
+  jit_receive(j, 2, abi, args);
+  jit_load_args(j, 2, abi, args, regs);
+
+  jit_ldxr_uc(j, JIT_R0, JIT_R0, JIT_R1);
+  jit_retr(j, JIT_R0);
+
+  uintmax_t (*f)(void*, uintmax_t) = jit_end(j, NULL);
+
+  ASSERT(f(data, 0) == 0xff);
+  ASSERT(f(data, 1) == 0);
+  ASSERT(f(data, 2) == 0x42);
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}
diff --git a/tests/ldxr_ui.c b/tests/ldxr_ui.c
new file mode 100644
index 000000000..04fcb7d77
--- /dev/null
+++ b/tests/ldxr_ui.c
@@ -0,0 +1,33 @@
+#include "test.h"
+
+static uint32_t data[] = { 0xffffffff, 0x00000000, 0x42424242 };
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+#if __WORDSIZE > 32
+  jit_begin(j, arena_base, arena_size);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_POINTER, JIT_ARG_ABI_INTMAX };
+  jit_arg_t args[2];
+  const jit_anyreg_t regs[] = { { .gpr=JIT_R0 }, { .gpr=JIT_R1 } };
+
+  jit_receive(j, 2, abi, args);
+  jit_load_args(j, 2, abi, args, regs);
+
+  jit_ldxr_ui(j, JIT_R0, JIT_R0, JIT_R1);
+  jit_retr(j, JIT_R0);
+
+  uintmax_t (*f)(void*, uintmax_t) = jit_end(j, NULL);
+
+  ASSERT(f(data, 0) == data[0]);
+  ASSERT(f(data, 4) == data[1]);
+  ASSERT(f(data, 8) == data[2]);
+#endif
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}
diff --git a/tests/ldxr_us.c b/tests/ldxr_us.c
new file mode 100644
index 000000000..12c4d9ca1
--- /dev/null
+++ b/tests/ldxr_us.c
@@ -0,0 +1,31 @@
+#include "test.h"
+
+static uint16_t data[] = { 0xffff, 0x0000, 0x4242 };
+
+static void
+run_test(jit_state_t *j, uint8_t *arena_base, size_t arena_size)
+{
+  jit_begin(j, arena_base, arena_size);
+
+  const jit_arg_abi_t abi[] = { JIT_ARG_ABI_POINTER, JIT_ARG_ABI_INTMAX };
+  jit_arg_t args[2];
+  const jit_anyreg_t regs[] = { { .gpr=JIT_R0 }, { .gpr=JIT_R1 } };
+
+  jit_receive(j, 2, abi, args);
+  jit_load_args(j, 2, abi, args, regs);
+
+  jit_ldxr_us(j, JIT_R0, JIT_R0, JIT_R1);
+  jit_retr(j, JIT_R0);
+
+  uintmax_t (*f)(void*, uintmax_t) = jit_end(j, NULL);
+
+  ASSERT(f(data, 0) == data[0]);
+  ASSERT(f(data, 2) == data[1]);
+  ASSERT(f(data, 4) == data[2]);
+}
+
+int
+main (int argc, char *argv[])
+{
+  return main_helper(argc, argv, run_test);
+}