Signed-off-by: Avi Kivity <[email protected]>
---
x86/emulator.c | 17 +++++++++++++++++
1 file changed, 17 insertions(+)
diff --git a/x86/emulator.c b/x86/emulator.c
index 9e76de8..e251933 100644
--- a/x86/emulator.c
+++ b/x86/emulator.c
@@ -787,6 +787,22 @@ static void test_sreg(volatile uint16_t *mem)
write_ss(ss);
}
+static void test_lldt(volatile uint16_t *mem)
+{
+ u64 gdt[] = { 0, 0x0000f82000000ffffull /* ldt descriptor */ };
+ struct descriptor_table_ptr gdt_ptr = { .limit = 0xffff, .base =
(ulong)&gdt };
+ struct descriptor_table_ptr orig_gdt;
+
+ cli();
+ sgdt(&orig_gdt);
+ lgdt(&gdt_ptr);
+ *mem = 0x8;
+ asm volatile("lldt %0" : : "m"(*mem));
+ lgdt(&orig_gdt);
+ sti();
+ report("lldt", sldt() == *mem);
+}
+
int main()
{
void *mem;
@@ -839,6 +855,7 @@ int main()
test_shld_shrd(mem);
//test_lgdt_lidt(mem);
test_sreg(mem);
+ test_lldt(mem);
test_mmx_movq_mf(mem, insn_page, alt_insn_page, insn_ram);
--
1.7.11
--
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