---
tools/testing/selftests/kvm/arm/vfp-guest.c | 37 +++++++++++++++++++++++++--
1 file changed, 35 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/kvm/arm/vfp-guest.c b/tools/testing/selftests/kvm/arm/vfp-guest.c
index b82e393..c0704f6 100644
--- a/tools/testing/selftests/kvm/arm/vfp-guest.c
+++ b/tools/testing/selftests/kvm/arm/vfp-guest.c
@@ -30,10 +30,16 @@ static void turn_on_coproc_access(void)
int test(void)
{
- double d1, d2, d3;
register double d0 asm("d0");
+ register double d1 asm("d1");
+ register double d2 asm("d2");
+ register double d3 asm("d3");
register double d16 asm("d16");
+ register double d17 asm("d17");
+ register double d18 asm("d18");
+ register double d19 asm("d19");
int val;
+ int i;
print("Turning on CP10/11 access\n");
turn_on_coproc_access();
@@ -47,9 +53,11 @@ int test(void)
print("Basic floating point test\n");
d1 = 1.0 / 8;
+ vm_exit();
d2 = 1.0 / 16;
+ vm_exit();
d3 = d1 + d2;
-
+ vm_exit();
assert(d3 == 3.0 / 16);
/* Now, try loading 2.0 and make sure host doesn't interfere! */
@@ -59,6 +67,14 @@ int test(void)
assert(d0 == 2.0);
/* Same thing with upper 16 registers. */
+ d17 = 1.0 / 8;
+ vm_exit();
+ d18 = 1.0 / 16;
+ vm_exit();
+ d19 = d17 + d18;
+ vm_exit();
+ assert(d19 == 3.0 / 16);
+
d16 = 2.0;
assert(d16 == 2.0);
read(VFP_USE_REG + 16, val);
@@ -79,5 +95,22 @@ int test(void)
read(VFP_SET_REG + 16, val);
assert(d16 == 3.0);
+ /* Check again a high number of exits doesn't affect results */
+ d0 = 100.0;
+ d1 = 1.073;
+ d16 = d0;
+ d17 = d1;
+
+ for(i = 0; i < 1000; i++)
+ d0 *= d1;
+
+ for(i = 0; i < 1000; i++) {
+ vm_exit();
+ d16 *= d17;
+ vm_exit();
+ }
+
+ assert(d0 == d16);
+
return 0;
}
--
1.7.9.5
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