Add a new file "emulator.c" and keep running tests simple for now
(no support for multiple iterations and such stuff). We will get this
for free once we switch to a new, general API for running/defining
tests.
Signed-off-by: David Hildenbrand <david@xxxxxxxxxx>
---
s390x/Makefile | 1 +
s390x/emulator.c | 65 +++++++++++++++++++++++++++++++++++++++++++++++++++++
s390x/unittests.cfg | 3 +++
3 files changed, 69 insertions(+)
create mode 100644 s390x/emulator.c
diff --git a/s390x/Makefile b/s390x/Makefile
index bc099da..573cba2 100644
--- a/s390x/Makefile
+++ b/s390x/Makefile
@@ -1,5 +1,6 @@
tests = $(TEST_DIR)/selftest.elf
tests += $(TEST_DIR)/intercept.elf
+tests += $(TEST_DIR)/emulator.elf
all: directories test_cases
diff --git a/s390x/emulator.c b/s390x/emulator.c
new file mode 100644
index 0000000..7854498
--- /dev/null
+++ b/s390x/emulator.c
@@ -0,0 +1,65 @@
+/*
+ * Emulator tests - for s390x CPU instructions that are usually interpreted
+ * by the hardware
+ *
+ * Copyright (c) 2017 Red Hat Inc
+ *
+ * Authors:
+ * David Hildenbrand <david@xxxxxxxxxx>
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU Library General Public License version 2.
+ */
+#include <libcflat.h>
+
+static inline void __test_spm_ipm(uint8_t cc, uint8_t key)
+{
+ uint64_t in = (cc << 28) | (key << 24);
+ uint64_t out = ~0ULL;
+
+ report_prefix_pushf("cc=%d,key=%x", cc, key);
+
+ asm volatile ("spm %1\n"
+ "ipm %0\n"
+ : "+r"(out) : "r"(in) : "cc");
+
+ report("bit 32 and 33 set to zero", !(out & 0xc0000000UL));
+ report("bit 0-31, 40-63 unchanged",
+ (out & ~0xff000000ULL) == ~0xff000000ULL);
+ report("cc and key applied", !((in ^ out) & 0x3f000000UL));
+
+ report_prefix_pop();
+}
+
+/* Test the SET PROGRAM PARAMETER and INSERT PROGRAM PARAMETER instruction */
+static void test_spm_ipm(void)
+{
+ __test_spm_ipm(0, 0xf);
+ __test_spm_ipm(1, 0x9);
+ __test_spm_ipm(2, 0x5);
+ __test_spm_ipm(3, 0x3);
+ __test_spm_ipm(0, 0);
+}
+
+static struct {
+ const char *name;
+ void (*func)(void);
+} tests[] = {
+ { "spm/ipm", test_spm_ipm },
+ { NULL, NULL }
+};
+
+int main(int argc, char**argv)
+{
+ int i;
+
+ report_prefix_push("emulator");
+ for (i = 0; tests[i].name; i++) {
+ report_prefix_push(tests[i].name);
+ tests[i].func();
+ report_prefix_pop();
+ }
+ report_prefix_pop();
+
+ return report_summary();
+}
diff --git a/s390x/unittests.cfg b/s390x/unittests.cfg
index 3b6b892..1343a19 100644
--- a/s390x/unittests.cfg
+++ b/s390x/unittests.cfg
@@ -25,3 +25,6 @@ extra_params = -append 'test 123'
[intercept]
file = intercept.elf
+
+[emulator]
+file = emulator.elf
--
2.13.5
