[COMMIT master] Test CALL FAR R/M instrucion (opcode FF /3)

[Avi Kivity]

From: Avi Kivity <a...@redhat.com>

Signed-off-by: Avi Kivity <a...@redhat.com>

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)
--
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