Signed-off-by: Avi Kivity <[email protected]>
---
x86/emulator.c | 15 +++++++++++++++
1 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/x86/emulator.c b/x86/emulator.c
index b584122..6590618 100644
--- a/x86/emulator.c
+++ b/x86/emulator.c
@@ -606,6 +606,20 @@ static void test_sse(sse_union *mem)
report("movdqu (write)", sseeq(mem, &v));
}
+static void test_mmx(uint64_t *mem)
+{
+ uint64_t v;
+
+ write_cr0(read_cr0() & ~6); /* EM, TS */
+ asm volatile("fninit");
+ v = 0x0102030405060708ULL;
+ asm("movq %1, %0" : "=m"(*mem) : "y"(v));
+ report("movq (mmx, read)", v == *mem);
+ *mem = 0x8070605040302010ull;
+ asm("movq %1, %0" : "=y"(v) : "m"(*mem));
+ report("movq (mmx, write)", v == *mem);
+}
+
static void test_rip_relative(unsigned *mem, char *insn_ram)
{
/* movb $1, mem+2(%rip) */
@@ -672,6 +686,7 @@ int main()
test_imul(mem);
test_div(mem);
test_sse(mem);
+ test_mmx(mem);
test_rip_relative(mem, insn_ram);
test_shld_shrd(mem);
--
1.7.9
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