Signed-off-by: Wei Yongjun yj...@cn.fujitsu.com
---
x86/realmode.c | 27 +++
1 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/x86/realmode.c b/x86/realmode.c
index bedd175..ce8fb18 100644
--- a/x86/realmode.c
+++ b/x86/realmode.c
@@ -1236,6 +1236,32 @@ void test_loopcc(void)
print_serial(LOOPcc short Test 3: PASS\n);
}
+void test_cbw(void)
+{
+ struct regs inregs = { 0 }, outregs;
+
+ MK_INSN(cbw, mov $0xFE, %eax \n\t
+cbw\n\t);
+ MK_INSN(cwde, mov $0xFFFE, %eax \n\t
+ cwde\n\t);
+
+ exec_in_big_real_mode(inregs, outregs,
+ insn_cbw,
+ insn_cbw_end - insn_cbw);
+ if (outregs.eax != 0xFFFE)
+ print_serial(cbw test1: FAIL\n);
+ else
+ print_serial(cbw test 1: PASS\n);
+
+ exec_in_big_real_mode(inregs, outregs,
+ insn_cwde,
+ insn_cwde_end - insn_cwde);
+ if (outregs.eax != 0xFFFE)
+ print_serial(cwde test1: FAIL\n);
+ else
+ print_serial(cwde test 1: PASS\n);
+}
+
void realmode_start(void)
{
test_null();
@@ -1264,6 +1290,7 @@ void realmode_start(void)
test_div();
test_idiv();
test_loopcc();
+ test_cbw();
exit(0);
}
--
1.7.0.4
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