Signed-off-by: Avi Kivity <a...@redhat.com>
---
x86/realmode.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/x86/realmode.c b/x86/realmode.c
index 710a06b..82a66b3 100644
--- a/x86/realmode.c
+++ b/x86/realmode.c
@@ -554,6 +554,11 @@ void test_push_pop()
"mov %fs, %ebx\n\t"
"pop %fs\n\t"
);
+ MK_INSN(push_pop_high_esp_bits,
+ "xor $0x12340000, %esp \n\t"
+ "push %ax; \n\t"
+ "xor $0x12340000, %esp \n\t"
+ "pop %bx");
inregs = (struct regs){ 0 };
@@ -577,6 +582,11 @@ void test_push_pop()
exec_in_big_real_mode(&insn_push_pop_fs);
report("push/pop 6", R_AX|R_BX, outregs.ebx == outregs.eax);
+
+ inregs.eax = 0x9977;
+ inregs.ebx = 0x7799;
+ exec_in_big_real_mode(&insn_push_pop_high_esp_bits);
+ report("push/pop with high bits set in %esp", R_BX, outregs.ebx ==
0x9977);
}
void test_null(void)
--
1.7.11.3
--
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