KVM: x86 emulator: Add test acc, imm instruction (opcodes 0xA8 - 0xA9)

This adds test acc, imm instruction to the x86 emulator

Signed-off-by: Mohammed Gamal <m.gamal005@gmail.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c
index b43ac98ef790..35dd57c5a7fd 100644
--- a/arch/x86/kvm/emulate.c
+++ b/arch/x86/kvm/emulate.c
@@ -181,7 +181,7 @@ static u32 opcode_table[256] = {
         ByteOp | SrcSI | DstDI | Mov | String, SrcSI | DstDI | Mov | String,
         ByteOp | SrcSI | DstDI | String, SrcSI | DstDI | String,
         /* 0xA8 - 0xAF */
-        0, 0, ByteOp | DstDI | Mov | String, DstDI | Mov | String,
+        DstAcc | SrcImmByte | ByteOp, DstAcc | SrcImm, ByteOp | DstDI | Mov | String, DstDI | Mov | String,
         ByteOp | SrcSI | DstAcc | Mov | String, SrcSI | DstAcc | Mov | String,
         ByteOp | DstDI | String, DstDI | String,
         /* 0xB0 - 0xB7 */
@@ -2754,6 +2754,7 @@ special_insn:
                 }
                 break;
         case 0x84 ... 0x85:
+        test:
                 emulate_2op_SrcV("test", c->src, c->dst, ctxt->eflags);
                 break;
         case 0x86 ... 0x87:     /* xchg */
@@ -2852,6 +2853,8 @@ special_insn:
                 c->dst.type = OP_NONE; /* Disable writeback. */
                 DPRINTF("cmps: mem1=0x%p mem2=0x%p\n", c->src.ptr, c->dst.ptr);
                 goto cmp;
+        case 0xa8 ... 0xa9:     /* test ax, imm */
+                goto test;
         case 0xaa ... 0xab:     /* stos */
                 c->dst.val = c->regs[VCPU_REGS_RAX];
                 break;