1 files changed, 76 insertions, 0 deletions
diff --git a/isa/rv32uzbb/clz.S b/isa/rv32uzbb/clz.S
new file mode 100644
index 0000000..4b349ad
--- /dev/null
+++ b/isa/rv32uzbb/clz.S
@@ -0,0 +1,76 @@
+# See LICENSE for license details.
+
+#*****************************************************************************
+# clz.S
+#-----------------------------------------------------------------------------
+#
+# Test clz instruction.
+#
+
+#include "riscv_test.h"
+#include "test_macros.h"
+
+RVTEST_RV32U
+RVTEST_CODE_BEGIN
+
+  #-------------------------------------------------------------
+  # Arithmetic tests
+  #-------------------------------------------------------------
+
+  TEST_R_OP( 2,  clz, 32, 0x00000000);
+  TEST_R_OP( 3,  clz, 31, 0x00000001);
+  TEST_R_OP( 4,  clz, 30, 0x00000003);
+
+  TEST_R_OP( 5,  clz, 0, 0xffff8000 );
+  TEST_R_OP( 6,  clz, 8, 0x00800000 );
+  TEST_R_OP( 7,  clz, 0, 0xffff8000 );
+
+  TEST_R_OP( 8,  clz, 17, 0x00007fff);
+  TEST_R_OP( 9,  clz, 1, 0x7fffffff);
+  TEST_R_OP( 10, clz, 13, 0x0007ffff );
+
+  TEST_R_OP( 11, clz, 0, 0x80000000);
+  TEST_R_OP( 12, clz, 3, 0x121f5000);
+
+  TEST_R_OP( 13, clz, 5, 0x04000000);
+  TEST_R_OP( 14, clz, 28, 0x0000000e);
+  TEST_R_OP( 15, clz, 2, 0x20401341);
+
+  #-------------------------------------------------------------
+  # Source/Destination tests
+  #-------------------------------------------------------------
+
+  TEST_R_SRC1_EQ_DEST( 16, clz, 28, 13);
+  TEST_R_SRC1_EQ_DEST( 17, clz, 28, 11);
+
+  #-------------------------------------------------------------
+  # Bypassing tests
+  #-------------------------------------------------------------
+
+  TEST_R_DEST_BYPASS( 18, 0, clz, 28, 13);
+  TEST_R_DEST_BYPASS( 29, 1, clz, 27, 19);
+  TEST_R_DEST_BYPASS( 20, 2, clz, 26, 34);
+
+  #-------------------------------------------------------------
+  # Other tests
+  #-------------------------------------------------------------
+
+
+  TEST_R_OP( 21, clz, 5, 0x070f8000 );
+  TEST_R_OP( 22, clz, 4, 0x08008000 );
+  TEST_R_OP( 23, clz, 3, 0x18008000 );
+
+  TEST_R_OP( 24, clz, 17, 0x00007fff);
+  TEST_R_OP( 25, clz, 1, 0x7fffffff);
+  TEST_R_OP( 26, clz, 13, 0x0007ffff);
+
+  TEST_PASSFAIL
+
+RVTEST_CODE_END
+
+  .data
+RVTEST_DATA_BEGIN
+
+  TEST_DATA
+
+RVTEST_DATA_END