Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
x86/realmode.c | 14 ++++++++++++++
1 files changed, 14 insertions(+), 0 deletions(-)
diff --git a/x86/realmode.c b/x86/realmode.c
index 77fc1e1..42b6760 100644
--- a/x86/realmode.c
+++ b/x86/realmode.c
@@ -604,10 +604,14 @@ void test_io(void)
print_serial("I/O test 6: PASS\n");
}
+asm ("retf: lretw");
+extern void retf();
+
void test_call(void)
{
struct regs inregs = { 0 }, outregs;
u32 esp[16];
+ u32 addr;
inregs.esp = (u32)esp;
@@ -622,6 +626,7 @@ void test_call(void)
"1: mov $0x1234, %eax\n\t"
"ret\n\t"
"2:\t");
+ MK_INSN(call_far1, "lcallw *(%ebx)\n\t");
exec_in_big_real_mode(&inregs, &outregs,
insn_call1,
@@ -644,6 +649,15 @@ void test_call(void)
print_serial("Call near Test 2: FAIL\n");
else
print_serial("Call near Test 2: PASS\n");
+
+ addr = (((unsigned)retf >> 4) << 16) | ((unsigned)retf & 0x0f);
+ inregs.ebx = (unsigned)&addr;
+ exec_in_big_real_mode(&inregs, &outregs, insn_call_far1,
+ insn_call_far1_end - insn_call_far1);
+ if (!regs_equal(&inregs, &outregs, 0))
+ print_serial("Call far Test 1: FAIL\n");
+ else
+ print_serial("Call far Test 1: PASS\n");
}
void test_jcc_short(void)
--
1.7.1
--
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