This patch add test for xchg instruction.
Signed-off-by: Wei Yongjun yj...@cn.fujitsu.com
---
kvm/test/x86/emulator.c | 52 +++
1 files changed, 52 insertions(+), 0 deletions(-)
diff --git a/kvm/test/x86/emulator.c b/kvm/test/x86/emulator.c
index 6db1305..2af3d96 100644
--- a/kvm/test/x86/emulator.c
+++ b/kvm/test/x86/emulator.c
@@ -270,6 +270,56 @@ void test_lmsw(void)
asm(lmsw %0 : : r(msw));
}
+void test_xchg(void *mem)
+{
+ unsigned long *memq = mem;
+ unsigned long rax;
+
+ asm volatile(mov $0x123456789abcdef, %%rax\n\t
+mov %%rax, (%[memq])\n\t
+mov $0xfedcba9876543210, %%rax\n\t
+xchg %%al, (%[memq])\n\t
+mov %%rax, %[rax]\n\t
+: [rax]=r(rax)
+: [memq]r(memq)
+: memory);
+ report(xchg reg, r/m (1),
+ rax == 0xfedcba98765432ef *memq == 0x123456789abcd10);
+
+ asm volatile(mov $0x123456789abcdef, %%rax\n\t
+mov %%rax, (%[memq])\n\t
+mov $0xfedcba9876543210, %%rax\n\t
+xchg %%ax, (%[memq])\n\t
+mov %%rax, %[rax]\n\t
+: [rax]=r(rax)
+: [memq]r(memq)
+: memory);
+ report(xchg reg, r/m (2),
+ rax == 0xfedcba987654cdef *memq == 0x123456789ab3210);
+
+ asm volatile(mov $0x123456789abcdef, %%rax\n\t
+mov %%rax, (%[memq])\n\t
+mov $0xfedcba9876543210, %%rax\n\t
+xchg %%eax, (%[memq])\n\t
+mov %%rax, %[rax]\n\t
+: [rax]=r(rax)
+: [memq]r(memq)
+: memory);
+ report(xchg reg, r/m (3),
+ rax == 0x89abcdef *memq == 0x123456776543210);
+
+ asm volatile(mov $0x123456789abcdef, %%rax\n\t
+mov %%rax, (%[memq])\n\t
+mov $0xfedcba9876543210, %%rax\n\t
+xchg %%rax, (%[memq])\n\t
+mov %%rax, %[rax]\n\t
+: [rax]=r(rax)
+: [memq]r(memq)
+: memory);
+ report(xchg reg, r/m (4),
+ rax == 0x123456789abcdef *memq == 0xfedcba9876543210);
+}
+
int main()
{
void *mem;
@@ -292,6 +342,8 @@ int main()
test_push(mem);
test_pop(mem);
+ test_xchg(mem);
+
test_cr8();
test_smsw();
--
1.7.0.4
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