1 files changed, 83 insertions, 0 deletions
diff --git a/tests/sub.S b/tests/sub.S
new file mode 100644
index 0000000..ad56e3e
--- /dev/null
+++ b/tests/sub.S
@@ -0,0 +1,83 @@
+# See LICENSE for license details.
+
+#*****************************************************************************
+# sub.S
+#-----------------------------------------------------------------------------
+#
+# Test sub instruction.
+#
+
+#include "riscv_test.h"
+#include "test_macros.h"
+
+RVTEST_RV32U
+RVTEST_CODE_BEGIN
+
+  #-------------------------------------------------------------
+  # Arithmetic tests
+  #-------------------------------------------------------------
+
+  TEST_RR_OP( 2,  sub, 0x00000000, 0x00000000, 0x00000000 );
+  TEST_RR_OP( 3,  sub, 0x00000000, 0x00000001, 0x00000001 );
+  TEST_RR_OP( 4,  sub, 0xfffffffc, 0x00000003, 0x00000007 );
+
+  TEST_RR_OP( 5,  sub, 0x00008000, 0x00000000, 0xffff8000 );
+  TEST_RR_OP( 6,  sub, 0x80000000, 0x80000000, 0x00000000 );
+  TEST_RR_OP( 7,  sub, 0x80008000, 0x80000000, 0xffff8000 );
+
+  TEST_RR_OP( 8,  sub, 0xffff8001, 0x00000000, 0x00007fff );
+  TEST_RR_OP( 9,  sub, 0x7fffffff, 0x7fffffff, 0x00000000 );
+  TEST_RR_OP( 10, sub, 0x7fff8000, 0x7fffffff, 0x00007fff );
+
+  TEST_RR_OP( 11, sub, 0x7fff8001, 0x80000000, 0x00007fff );
+  TEST_RR_OP( 12, sub, 0x80007fff, 0x7fffffff, 0xffff8000 );
+
+  TEST_RR_OP( 13, sub, 0x00000001, 0x00000000, 0xffffffff );
+  TEST_RR_OP( 14, sub, 0xfffffffe, 0xffffffff, 0x00000001 );
+  TEST_RR_OP( 15, sub, 0x00000000, 0xffffffff, 0xffffffff );
+
+  #-------------------------------------------------------------
+  # Source/Destination tests
+  #-------------------------------------------------------------
+
+  TEST_RR_SRC1_EQ_DEST( 16, sub, 2, 13, 11 );
+  TEST_RR_SRC2_EQ_DEST( 17, sub, 3, 14, 11 );
+  TEST_RR_SRC12_EQ_DEST( 18, sub, 0, 13 );
+
+  #-------------------------------------------------------------
+  # Bypassing tests
+  #-------------------------------------------------------------
+
+  TEST_RR_DEST_BYPASS( 19, 0, sub, 2, 13, 11 );
+  TEST_RR_DEST_BYPASS( 20, 1, sub, 3, 14, 11 );
+  TEST_RR_DEST_BYPASS( 21, 2, sub, 4, 15, 11 );
+
+  TEST_RR_SRC12_BYPASS( 22, 0, 0, sub, 2, 13, 11 );
+  TEST_RR_SRC12_BYPASS( 23, 0, 1, sub, 3, 14, 11 );
+  TEST_RR_SRC12_BYPASS( 24, 0, 2, sub, 4, 15, 11 );
+  TEST_RR_SRC12_BYPASS( 25, 1, 0, sub, 2, 13, 11 );
+  TEST_RR_SRC12_BYPASS( 26, 1, 1, sub, 3, 14, 11 );
+  TEST_RR_SRC12_BYPASS( 27, 2, 0, sub, 4, 15, 11 );
+
+  TEST_RR_SRC21_BYPASS( 28, 0, 0, sub, 2, 13, 11 );
+  TEST_RR_SRC21_BYPASS( 29, 0, 1, sub, 3, 14, 11 );
+  TEST_RR_SRC21_BYPASS( 30, 0, 2, sub, 4, 15, 11 );
+  TEST_RR_SRC21_BYPASS( 31, 1, 0, sub, 2, 13, 11 );
+  TEST_RR_SRC21_BYPASS( 32, 1, 1, sub, 3, 14, 11 );
+  TEST_RR_SRC21_BYPASS( 33, 2, 0, sub, 4, 15, 11 );
+
+  TEST_RR_ZEROSRC1( 34, sub, 15, -15 );
+  TEST_RR_ZEROSRC2( 35, sub, 32, 32 );
+  TEST_RR_ZEROSRC12( 36, sub, 0 );
+  TEST_RR_ZERODEST( 37, sub, 16, 30 );
+
+  TEST_PASSFAIL
+
+RVTEST_CODE_END
+
+  .data
+RVTEST_DATA_BEGIN
+
+  TEST_DATA
+
+RVTEST_DATA_END