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authoraurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162>2009-04-10 21:27:15 +0000
committeraurel32 <aurel32@c046a42c-6fe2-441c-8c8c-71466251a162>2009-04-10 21:27:15 +0000
commitecbb5ea1041d2894f5efb9317acd519c4fd81ad5 (patch)
tree72cd66d31fdd2c87d191f3be9c84f4f72a2b20a7 /tests
parent68238a9e90708740200e652631ee1356dd55147d (diff)
target-alpha: overflow condition for sublv and subqv
The conditions to detect overflow in sub operations was wrong. This patch is necessary to boot Tru64. Signed-off-by: Tristan Gingold <gingold@adacore.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7073 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'tests')
-rw-r--r--tests/alpha/Makefile3
-rw-r--r--tests/alpha/test-ovf.c29
2 files changed, 32 insertions, 0 deletions
diff --git a/tests/alpha/Makefile b/tests/alpha/Makefile
index e4e23d2d08..2b1f03d048 100644
--- a/tests/alpha/Makefile
+++ b/tests/alpha/Makefile
@@ -23,6 +23,9 @@ test-cmov.o: test-cond.c
test-cmov: test-cmov.o crt.o
$(LINK)
+test-ovf: test-ovf.o crt.o
+ $(LINK)
+
check: $(TESTS)
for f in $(TESTS); do $(SIM) $$f || exit 1; done
diff --git a/tests/alpha/test-ovf.c b/tests/alpha/test-ovf.c
new file mode 100644
index 0000000000..01c80e7525
--- /dev/null
+++ b/tests/alpha/test-ovf.c
@@ -0,0 +1,29 @@
+static long test_subqv (long a, long b)
+{
+ long res;
+
+ asm ("subq/v %1,%2,%0"
+ : "=r" (res) : "r" (a), "r" (b));
+ return res;
+}
+static struct {
+ long (*func)(long, long);
+ long a;
+ long b;
+ long r;
+} vectors[] =
+ {
+ {test_subqv, 0, 0x7d54000, 0xfffffffff82ac000L}
+ };
+
+int main (void)
+{
+ int i;
+
+ for (i = 0; i < sizeof (vectors)/sizeof(vectors[0]); i++)
+ if ((*vectors[i].func)(vectors[i].a, vectors[i].b) != vectors[i].r) {
+ write(1, "Failed\n", 7);
+ }
+ write(1, "OK\n", 3);
+ return 0;
+}