Signed-off-by: Wei Yongjun <yjwei@xxxxxxxxxxxxxx>
---
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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