Test divide-by-zero and normal cases.
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
x86/emulator.c | 18 ++++++++++++++++++
1 files changed, 18 insertions(+), 0 deletions(-)
diff --git a/x86/emulator.c b/x86/emulator.c
index 5d1659f..845e7a0 100644
--- a/x86/emulator.c
+++ b/x86/emulator.c
@@ -577,6 +577,23 @@ static void test_imul(ulong *mem)
report("imul rax, mem, imm", a == 0x1D950BDE1D950BC8L);
}
+static void test_div(long *mem)
+{
+ long a, d;
+ u8 ex = 1;
+
+ *mem = 0; a = 1; d = 2;
+ asm (ASM_TRY("1f") "divq %3; movb $0, %2; 1:"
+ : "+a"(a), "+d"(d), "+q"(ex) : "m"(*mem));
+ report("divq (fault)", a == 1 && d == 2 && ex);
+
+ *mem = 987654321098765UL; a = 123456789012345UL; d = 123456789012345UL;
+ asm (ASM_TRY("1f") "divq %3; movb $0, %2; 1:"
+ : "+a"(a), "+d"(d), "+q"(ex) : "m"(*mem));
+ report("divq (1)",
+ a == 0x1ffffffb1b963b33ul && d == 0x273ba4384ede2ul && !ex);
+}
+
int main()
{
void *mem;
@@ -614,6 +631,7 @@ int main()
test_btc(mem);
test_bsfbsr(mem);
test_imul(mem);
+ test_div(mem);
printf("\nSUMMARY: %d tests, %d failures\n", tests, fails);
return fails ? 1 : 0;
--
1.7.1
--
To unsubscribe from this list: send the line "unsubscribe kvm" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
