diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index e257f22868663caf1f9f1ebb09fbafd8f8b0f3db..aece501edce4c5179a97d29756ae888d6b05c972 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -1514,6 +1514,23 @@ static int emulate_ret_far(struct x86_emulate_ctxt *ctxt, return rc; } +static int emulate_load_segment(struct x86_emulate_ctxt *ctxt, + struct x86_emulate_ops *ops, int seg) +{ + struct decode_cache *c = &ctxt->decode; + unsigned short sel; + int rc; + + memcpy(&sel, c->src.valptr + c->op_bytes, 2); + + rc = load_segment_descriptor(ctxt, ops, sel, seg); + if (rc != X86EMUL_CONTINUE) + return rc; + + c->dst.val = c->src.val; + return rc; +} + static inline void setup_syscalls_segments(struct x86_emulate_ctxt *ctxt, struct x86_emulate_ops *ops, struct desc_struct *cs, @@ -2458,7 +2475,7 @@ static struct opcode opcode_table[256] = { D(ByteOp | DstMem | SrcImm | ModRM), D(DstMem | SrcImmByte | ModRM), I(ImplicitOps | Stack | SrcImmU16, em_ret_near_imm), D(ImplicitOps | Stack), - N, N, + D(DstReg | SrcMemFAddr | ModRM | No64), D(DstReg | SrcMemFAddr | ModRM | No64), D(ByteOp | DstMem | SrcImm | ModRM | Mov), D(DstMem | SrcImm | ModRM | Mov), /* 0xC8 - 0xCF */ N, N, N, D(ImplicitOps | Stack), @@ -2529,9 +2546,9 @@ static struct opcode twobyte_table[256] = { D(ModRM), I(DstReg | SrcMem | ModRM, em_imul), /* 0xB0 - 0xB7 */ D(ByteOp | DstMem | SrcReg | ModRM | Lock), D(DstMem | SrcReg | ModRM | Lock), - N, D(DstMem | SrcReg | ModRM | BitOp | Lock), - N, N, D(ByteOp | DstReg | SrcMem | ModRM | Mov), - D(DstReg | SrcMem16 | ModRM | Mov), + D(DstReg | SrcMemFAddr | ModRM), D(DstMem | SrcReg | ModRM | BitOp | Lock), + D(DstReg | SrcMemFAddr | ModRM), D(DstReg | SrcMemFAddr | ModRM), + D(ByteOp | DstReg | SrcMem | ModRM | Mov), D(DstReg | SrcMem16 | ModRM | Mov), /* 0xB8 - 0xBF */ N, N, G(BitOp, group8), D(DstMem | SrcReg | ModRM | BitOp | Lock), @@ -3214,6 +3231,16 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt) c->dst.addr.reg = &c->eip; c->dst.bytes = c->op_bytes; goto pop_instruction; + case 0xc4: /* les */ + rc = emulate_load_segment(ctxt, ops, VCPU_SREG_ES); + if (rc != X86EMUL_CONTINUE) + goto done; + break; + case 0xc5: /* lds */ + rc = emulate_load_segment(ctxt, ops, VCPU_SREG_DS); + if (rc != X86EMUL_CONTINUE) + goto done; + break; case 0xc6 ... 0xc7: /* mov (sole member of Grp11) */ mov: c->dst.val = c->src.val; @@ -3659,10 +3686,25 @@ x86_emulate_insn(struct x86_emulate_ctxt *ctxt) c->dst.addr.reg = (unsigned long *)&c->regs[VCPU_REGS_RAX]; } break; + case 0xb2: /* lss */ + rc = emulate_load_segment(ctxt, ops, VCPU_SREG_SS); + if (rc != X86EMUL_CONTINUE) + goto done; + break; case 0xb3: btr: /* btr */ emulate_2op_SrcV_nobyte("btr", c->src, c->dst, ctxt->eflags); break; + case 0xb4: /* lfs */ + rc = emulate_load_segment(ctxt, ops, VCPU_SREG_FS); + if (rc != X86EMUL_CONTINUE) + goto done; + break; + case 0xb5: /* lgs */ + rc = emulate_load_segment(ctxt, ops, VCPU_SREG_GS); + if (rc != X86EMUL_CONTINUE) + goto done; + break; case 0xb6 ... 0xb7: /* movzx */ c->dst.bytes = c->op_bytes; c->dst.val = (c->d & ByteOp) ? (u8) c->src.val