KVM: x86 emulator: Add test acc, imm instruction (opcodes 0xA8 - 0xA9)
Mohammed Gamal [Tue, 11 May 2010 19:22:40 +0000 (22:22 +0300)]
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>

arch/x86/kvm/emulate.c

index b43ac98..35dd57c 100644 (file)
@@ -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;