From 80538e49f76fca845e1aa45e6033cd7648975779 Mon Sep 17 00:00:00 2001
From: Andrew Waterman <waterman@cs.berkeley.edu>
Date: Tue, 19 May 2015 02:28:59 -0700
Subject: Add basic WFI test

---
 isa/rv64mi/Makefrag |  1 +
 isa/rv64mi/wfi.S    |  8 ++++++++
 isa/rv64si/Makefrag |  1 +
 isa/rv64si/wfi.S    | 41 +++++++++++++++++++++++++++++++++++++++++
 4 files changed, 51 insertions(+)
 create mode 100644 isa/rv64mi/wfi.S
 create mode 100644 isa/rv64si/wfi.S

(limited to 'isa')

diff --git a/isa/rv64mi/Makefrag b/isa/rv64mi/Makefrag
index 52f6462..b8b1da0 100644
--- a/isa/rv64mi/Makefrag
+++ b/isa/rv64mi/Makefrag
@@ -10,6 +10,7 @@ rv64mi_sc_tests = \
 	ma_fetch \
 	ma_addr \
 	scall \
+	wfi \
 	sbreak \
 	timer \
 
diff --git a/isa/rv64mi/wfi.S b/isa/rv64mi/wfi.S
new file mode 100644
index 0000000..bfb130e
--- /dev/null
+++ b/isa/rv64mi/wfi.S
@@ -0,0 +1,8 @@
+# See LICENSE for license details.
+
+#include "riscv_test.h"
+#undef RVTEST_RV64S
+#define RVTEST_RV64S RVTEST_RV64M
+#define __MACHINE_MODE
+
+#include "../rv64si/wfi.S"
diff --git a/isa/rv64si/Makefrag b/isa/rv64si/Makefrag
index f19d840..17596c3 100644
--- a/isa/rv64si/Makefrag
+++ b/isa/rv64si/Makefrag
@@ -8,6 +8,7 @@ rv64si_sc_tests = \
 	ma_fetch \
 	ma_addr \
 	scall \
+	wfi \
 	sbreak \
 	timer \
 
diff --git a/isa/rv64si/wfi.S b/isa/rv64si/wfi.S
new file mode 100644
index 0000000..956121a
--- /dev/null
+++ b/isa/rv64si/wfi.S
@@ -0,0 +1,41 @@
+# See LICENSE for license details.
+
+#*****************************************************************************
+# wfi.S
+#-----------------------------------------------------------------------------
+#
+# Test wait-for-interrupt instruction.
+#
+
+#include "riscv_test.h"
+#include "test_macros.h"
+
+RVTEST_RV64S
+RVTEST_CODE_BEGIN
+
+#ifdef __MACHINE_MODE
+  #define sstatus mstatus
+  #define sie mie
+  #define sip mip
+  #undef MIP_SSIP
+  #define MIP_SSIP MIP_MSIP
+#endif
+
+  # Make sure wfi doesn't stall if an interrupt is pending
+  csrc sstatus, SSTATUS_IE
+  csrs sie, MIP_SSIP
+  csrs sip, MIP_SSIP
+  wfi
+
+  RVTEST_PASS
+
+  TEST_PASSFAIL
+
+RVTEST_CODE_END
+
+  .data
+RVTEST_DATA_BEGIN
+
+  TEST_DATA
+
+RVTEST_DATA_END
-- 
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