1 files changed, 65 insertions, 0 deletions
diff --git a/isa/rv32ua/amoadd_w.S b/isa/rv32ua/amoadd_w.S
new file mode 100644
index 0000000..975ae1d
--- /dev/null
+++ b/isa/rv32ua/amoadd_w.S
@@ -0,0 +1,65 @@
+# See LICENSE for license details.
+
+#*****************************************************************************
+# amoadd_w.S
+#-----------------------------------------------------------------------------
+#
+# Test amoadd.w instruction.
+#
+
+#include "riscv_test.h"
+#include "test_macros.h"
+
+RVTEST_RV32U
+RVTEST_CODE_BEGIN
+
+  TEST_CASE(2, a4, 0x80000000, \
+    li a0, 0x80000000; \
+    li a1, 0xfffff800; \
+    la a3, amo_operand; \
+    sw a0, 0(a3); \
+    nop; nop; nop; nop; \
+    nop; nop; nop; nop; \
+    nop; nop; nop; nop; \
+    nop; nop; nop; nop; \
+    nop; nop; nop; nop; \
+    nop; nop; nop; nop; \
+    nop; nop; nop; nop; \
+    amoadd.w	a4, a1, 0(a3); \
+  )
+
+  TEST_CASE(3, a5, 0x7ffff800, lw a5, 0(a3))
+
+  # try again after a cache miss
+  TEST_CASE(4, a4, 0x7ffff800, \
+    li  a1, 0x80000000; \
+    li  a4, 16384; \
+    add a5, a3, a4; \
+    lw  x0, 0(a5); \
+    add a5, a5, a4; \
+    lw  x0, 0(a5); \
+    add a5, a5, a4; \
+    lw  x0, 0(a5); \
+    add a5, a5, a4; \
+    lw  x0, 0(a5); \
+    amoadd.w a4, a1, 0(a3); \
+  )
+
+  TEST_CASE(5, a5, 0xfffff800, lw a5, 0(a3))
+
+  TEST_PASSFAIL
+
+RVTEST_CODE_END
+
+  .data
+RVTEST_DATA_BEGIN
+
+  TEST_DATA
+
+RVTEST_DATA_END
+
+    .bss
+    .align 3
+amo_operand:
+    .dword 0
+    .skip 65536