Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
x86/realmode.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/x86/realmode.c b/x86/realmode.c
index a083c7a..b1d089a 100644
--- a/x86/realmode.c
+++ b/x86/realmode.c
@@ -1301,6 +1301,23 @@ static void test_cpuid(void)
&& outregs.ecx == ecx && outregs.edx == edx);
}
+static void test_ss_base_for_esp_ebp(void)
+{
+ MK_INSN(ssrel1, "mov %ss, %ax; mov %bx, %ss; movl (%ebp), %ebx; mov %ax, %ss");
+ MK_INSN(ssrel2, "mov %ss, %ax; mov %bx, %ss; movl (%ebp,%edi,8), %ebx; mov %ax, %ss");
+ static unsigned array[] = { 0x12345678, 0, 0, 0, 0x87654321 };
+
+ inregs.ebx = 1;
+ inregs.ebp = (unsigned)array;
+ exec_in_big_real_mode(&insn_ssrel1);
+ report("ss relative addressing (1)", R_AX | R_BX, outregs.ebx == 0x87654321);
+ inregs.ebx = 1;
+ inregs.ebp = (unsigned)array;
+ inregs.edi = 0;
+ exec_in_big_real_mode(&insn_ssrel2);
+ report("ss relative addressing (2)", R_AX | R_BX, outregs.ebx == 0x87654321);
+}
+
void realmode_start(void)
{
test_null();
@@ -1335,6 +1352,7 @@ void realmode_start(void)
test_lds_lss();
test_jcxz();
test_cpuid();
+ test_ss_base_for_esp_ebp();
exit(0);
}
--
1.7.11
--
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