Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
x86/realmode.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/x86/realmode.c b/x86/realmode.c
index d171a56..a083c7a 100644
--- a/x86/realmode.c
+++ b/x86/realmode.c
@@ -1287,6 +1287,20 @@ void test_jcxz(void)
report("jecxz short 2", R_AX, outregs.eax == 0x1234);
}
+static void test_cpuid(void)
+{
+ MK_INSN(cpuid, "cpuid");
+ unsigned function = 0x1234;
+ unsigned eax, ebx, ecx, edx;
+
+ inregs.eax = eax = function;
+ asm("cpuid" : "+a"(eax), "=b"(ebx), "=c"(ecx), "=d"(edx));
+ exec_in_big_real_mode(&insn_cpuid);
+ report("cpuid", R_AX|R_BX|R_CX|R_DX,
+ outregs.eax == eax && outregs.ebx == ebx
+ && outregs.ecx == ecx && outregs.edx == edx);
+}
+
void realmode_start(void)
{
test_null();
@@ -1320,6 +1334,7 @@ void realmode_start(void)
test_das();
test_lds_lss();
test_jcxz();
+ test_cpuid();
exit(0);
}
--
1.7.11
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