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author | Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp> | 2011-11-22 06:17:48 (GMT) |
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committer | Avi Kivity <avi@redhat.com> | 2011-12-27 09:17:25 (GMT) |
commit | ce7faab24fbfb0b5207636ee4795e924bcf97e8a (patch) | |
tree | dee7b7ccc95d06cedf4dfd5943e50b8358d44721 /arch/x86/kvm/emulate.c | |
parent | d7841a4b1b6e8509881e1ec21c024c82ccf565a6 (diff) | |
download | linux-fsl-qoriq-ce7faab24fbfb0b5207636ee4795e924bcf97e8a.tar.xz |
KVM: x86 emulator: Use opcode::execute for BT family
BT : 0F A3
BTS: 0F AB
BTR: 0F B3
BTC: 0F BB
Group 8: 0F BA
Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
Diffstat (limited to 'arch/x86/kvm/emulate.c')
-rw-r--r-- | arch/x86/kvm/emulate.c | 77 |
1 files changed, 38 insertions, 39 deletions
diff --git a/arch/x86/kvm/emulate.c b/arch/x86/kvm/emulate.c index 8ba4ea8..7a9ce6d 100644 --- a/arch/x86/kvm/emulate.c +++ b/arch/x86/kvm/emulate.c @@ -2813,6 +2813,35 @@ static int em_sti(struct x86_emulate_ctxt *ctxt) return X86EMUL_CONTINUE; } +static int em_bt(struct x86_emulate_ctxt *ctxt) +{ + /* Disable writeback. */ + ctxt->dst.type = OP_NONE; + /* only subword offset */ + ctxt->src.val &= (ctxt->dst.bytes << 3) - 1; + + emulate_2op_SrcV_nobyte(ctxt, "bt"); + return X86EMUL_CONTINUE; +} + +static int em_bts(struct x86_emulate_ctxt *ctxt) +{ + emulate_2op_SrcV_nobyte(ctxt, "bts"); + return X86EMUL_CONTINUE; +} + +static int em_btr(struct x86_emulate_ctxt *ctxt) +{ + emulate_2op_SrcV_nobyte(ctxt, "btr"); + return X86EMUL_CONTINUE; +} + +static int em_btc(struct x86_emulate_ctxt *ctxt) +{ + emulate_2op_SrcV_nobyte(ctxt, "btc"); + return X86EMUL_CONTINUE; +} + static bool valid_cr(int nr) { switch (nr) { @@ -3117,10 +3146,10 @@ static struct group_dual group7 = { { static struct opcode group8[] = { N, N, N, N, - D(DstMem | SrcImmByte | ModRM), - D(DstMem | SrcImmByte | ModRM | Lock | PageTable), - D(DstMem | SrcImmByte | ModRM | Lock), - D(DstMem | SrcImmByte | ModRM | Lock | PageTable), + I(DstMem | SrcImmByte | ModRM, em_bt), + I(DstMem | SrcImmByte | ModRM | Lock | PageTable, em_bts), + I(DstMem | SrcImmByte | ModRM | Lock, em_btr), + I(DstMem | SrcImmByte | ModRM | Lock | PageTable, em_btc), }; static struct group_dual group9 = { { @@ -3299,26 +3328,27 @@ static struct opcode twobyte_table[256] = { X16(D(ByteOp | DstMem | SrcNone | ModRM| Mov)), /* 0xA0 - 0xA7 */ I(Stack | Src2FS, em_push_sreg), I(Stack | Src2FS, em_pop_sreg), - DI(ImplicitOps, cpuid), D(DstMem | SrcReg | ModRM | BitOp), + DI(ImplicitOps, cpuid), I(DstMem | SrcReg | ModRM | BitOp, em_bt), D(DstMem | SrcReg | Src2ImmByte | ModRM), D(DstMem | SrcReg | Src2CL | ModRM), N, N, /* 0xA8 - 0xAF */ I(Stack | Src2GS, em_push_sreg), I(Stack | Src2GS, em_pop_sreg), DI(ImplicitOps, rsm), - D(DstMem | SrcReg | ModRM | BitOp | Lock | PageTable), + I(DstMem | SrcReg | ModRM | BitOp | Lock | PageTable, em_bts), D(DstMem | SrcReg | Src2ImmByte | ModRM), D(DstMem | SrcReg | Src2CL | ModRM), D(ModRM), I(DstReg | SrcMem | ModRM, em_imul), /* 0xB0 - 0xB7 */ D2bv(DstMem | SrcReg | ModRM | Lock | PageTable), I(DstReg | SrcMemFAddr | ModRM | Src2SS, em_lseg), - D(DstMem | SrcReg | ModRM | BitOp | Lock), + I(DstMem | SrcReg | ModRM | BitOp | Lock, em_btr), I(DstReg | SrcMemFAddr | ModRM | Src2FS, em_lseg), I(DstReg | SrcMemFAddr | ModRM | Src2GS, em_lseg), D(ByteOp | DstReg | SrcMem | ModRM | Mov), D(DstReg | SrcMem16 | ModRM | Mov), /* 0xB8 - 0xBF */ N, N, - G(BitOp, group8), D(DstMem | SrcReg | ModRM | BitOp | Lock | PageTable), + G(BitOp, group8), + I(DstMem | SrcReg | ModRM | BitOp | Lock | PageTable, em_btc), D(DstReg | SrcMem | ModRM), D(DstReg | SrcMem | ModRM), D(ByteOp | DstReg | SrcMem | ModRM | Mov), D(DstReg | SrcMem16 | ModRM | Mov), /* 0xC0 - 0xCF */ @@ -4103,21 +4133,10 @@ twobyte_insn: case 0x90 ... 0x9f: /* setcc r/m8 */ ctxt->dst.val = test_cc(ctxt->b, ctxt->eflags); break; - case 0xa3: - bt: /* bt */ - ctxt->dst.type = OP_NONE; - /* only subword offset */ - ctxt->src.val &= (ctxt->dst.bytes << 3) - 1; - emulate_2op_SrcV_nobyte(ctxt, "bt"); - break; case 0xa4: /* shld imm8, r, r/m */ case 0xa5: /* shld cl, r, r/m */ emulate_2op_cl(ctxt, "shld"); break; - case 0xab: - bts: /* bts */ - emulate_2op_SrcV_nobyte(ctxt, "bts"); - break; case 0xac: /* shrd imm8, r, r/m */ case 0xad: /* shrd cl, r, r/m */ emulate_2op_cl(ctxt, "shrd"); @@ -4141,31 +4160,11 @@ twobyte_insn: ctxt->dst.addr.reg = (unsigned long *)&ctxt->regs[VCPU_REGS_RAX]; } break; - case 0xb3: - btr: /* btr */ - emulate_2op_SrcV_nobyte(ctxt, "btr"); - break; case 0xb6 ... 0xb7: /* movzx */ ctxt->dst.bytes = ctxt->op_bytes; ctxt->dst.val = (ctxt->d & ByteOp) ? (u8) ctxt->src.val : (u16) ctxt->src.val; break; - case 0xba: /* Grp8 */ - switch (ctxt->modrm_reg & 3) { - case 0: - goto bt; - case 1: - goto bts; - case 2: - goto btr; - case 3: - goto btc; - } - break; - case 0xbb: - btc: /* btc */ - emulate_2op_SrcV_nobyte(ctxt, "btc"); - break; case 0xbc: { /* bsf */ u8 zf; __asm__ ("bsf %2, %0; setz %1" |