[PATCH] Add realmode test for LDS/LES/LFS/LGS/LSS instruction

[Wei Yongjun]

Signed-off-by: Wei Yongjun <yj...@cn.fujitsu.com>
---
 x86/realmode.c |   59 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 59 insertions(+), 0 deletions(-)

diff --git a/x86/realmode.c b/x86/realmode.c
index b69e474..8c771fc 100644
--- a/x86/realmode.c
+++ b/x86/realmode.c
@@ -1184,6 +1184,64 @@ void test_cwd_cdq()
               outregs.eax == 0x10000000 && outregs.edx == 0);
 }
 
+static struct {
+        void *address;
+        unsigned short sel;
+} __attribute__((packed)) desc = {
+       (void *)0x1234,
+       0x10,
+};
+
+void test_lds_lss()
+{
+       inregs = (struct regs){ .ebx = (unsigned long)&desc };
+
+       MK_INSN(lds, "push %ds\n\t"
+                    "lds (%ebx), %eax\n\t"
+                    "mov %ds, %ebx\n\t"
+                    "pop %ds\n\t");
+       exec_in_big_real_mode(&insn_lds);
+       report("lds", R_AX | R_BX,
+               outregs.eax == (unsigned long)desc.address &&
+               outregs.ebx == desc.sel);
+
+       MK_INSN(les, "push %es\n\t"
+                    "les (%ebx), %eax\n\t"
+                    "mov %es, %ebx\n\t"
+                    "pop %es\n\t");
+       exec_in_big_real_mode(&insn_les);
+       report("les", R_AX | R_BX,
+               outregs.eax == (unsigned long)desc.address &&
+               outregs.ebx == desc.sel);
+
+       MK_INSN(lfs, "push %fs\n\t"
+                    "lfs (%ebx), %eax\n\t"
+                    "mov %fs, %ebx\n\t"
+                    "pop %fs\n\t");
+       exec_in_big_real_mode(&insn_lfs);
+       report("lfs", R_AX | R_BX,
+               outregs.eax == (unsigned long)desc.address &&
+               outregs.ebx == desc.sel);
+
+       MK_INSN(lgs, "push %gs\n\t"
+                    "lgs (%ebx), %eax\n\t"
+                    "mov %gs, %ebx\n\t"
+                    "pop %gs\n\t");
+       exec_in_big_real_mode(&insn_lgs);
+       report("lgs", R_AX | R_BX,
+               outregs.eax == (unsigned long)desc.address &&
+               outregs.ebx == desc.sel);
+
+       MK_INSN(lss, "push %ss\n\t"
+                    "lss (%ebx), %eax\n\t"
+                    "mov %ss, %ebx\n\t"
+                    "pop %ss\n\t");
+       exec_in_big_real_mode(&insn_lss);
+       report("lss", R_AX | R_BX,
+               outregs.eax == (unsigned long)desc.address &&
+               outregs.ebx == desc.sel);
+}
+
 void realmode_start(void)
 {
        test_null();
@@ -1215,6 +1273,7 @@ void realmode_start(void)
        test_cbw();
        test_cwd_cdq();
        test_das();
+       test_lds_lss();
 
        exit(0);
 }
-- 
1.7.0.4


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