--- /dev/null
+# See LICENSE for license details.
+
+#*****************************************************************************
+# amoxor_w.S
+#-----------------------------------------------------------------------------
+#
+# Test amoxor.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; \
+ amoxor.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, 0xc0000001; \
+ 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); \
+ amoxor.w a4, a1, 0(a3); \
+ )
+
+ TEST_CASE(5, a5, 0xbffff801, 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