diff options
author | Paolo Bonzini <pbonzini@redhat.com> | 2024-05-25 10:49:26 +0200 |
---|---|---|
committer | Paolo Bonzini <pbonzini@redhat.com> | 2024-06-17 09:47:39 +0200 |
commit | ae541c0eb47f2fbcfd975c8e2fcb0e3a2613dc1c (patch) | |
tree | 559128e2fe76b4e32fba428fc3c42136c04553a6 | |
parent | 556c4c5cc44c3454f78d796b6050c6d574a35dd2 (diff) | |
download | qemu-ae541c0eb47f2fbcfd975c8e2fcb0e3a2613dc1c.zip qemu-ae541c0eb47f2fbcfd975c8e2fcb0e3a2613dc1c.tar.gz qemu-ae541c0eb47f2fbcfd975c8e2fcb0e3a2613dc1c.tar.bz2 |
target/i386: convert non-grouped, helper-based 2-byte opcodes
These have very simple generators and no need for complex group
decoding. Apart from LAR/LSL which are simplified to use
gen_op_deposit_reg_v and movcond, the code is generally lifted
from translate.c into the generators.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r-- | target/i386/tcg/decode-new.c.inc | 48 | ||||
-rw-r--r-- | target/i386/tcg/decode-new.h | 7 | ||||
-rw-r--r-- | target/i386/tcg/emit.c.inc | 157 | ||||
-rw-r--r-- | target/i386/tcg/seg_helper.c | 16 | ||||
-rw-r--r-- | target/i386/tcg/translate.c | 148 |
5 files changed, 206 insertions, 170 deletions
diff --git a/target/i386/tcg/decode-new.c.inc b/target/i386/tcg/decode-new.c.inc index d0384a6..85e5422 100644 --- a/target/i386/tcg/decode-new.c.inc +++ b/target/i386/tcg/decode-new.c.inc @@ -223,6 +223,8 @@ #define vex13 .vex_class = 13, #define chk(a) .check = X86_CHECK_##a, +#define chk2(a, b) .check = X86_CHECK_##a | X86_CHECK_##b, +#define chk3(a, b, c) .check = X86_CHECK_##a | X86_CHECK_##b | X86_CHECK_##c, #define svm(a) .intercept = SVM_EXIT_##a, .has_intercept = true, #define avx2_256 .vex_special = X86_VEX_AVX2_256, @@ -1027,6 +1029,12 @@ static void decode_MOV_CR_DR(DisasContext *s, CPUX86State *env, X86OpEntry *entr } static const X86OpEntry opcodes_0F[256] = { + [0x02] = X86_OP_ENTRYwr(LAR, G,v, E,w, chk(prot)), + [0x03] = X86_OP_ENTRYwr(LSL, G,v, E,w, chk(prot)), + [0x05] = X86_OP_ENTRY0(SYSCALL, chk(o64_intel)), + [0x06] = X86_OP_ENTRY0(CLTS, chk(cpl0) svm(WRITE_CR0)), + [0x07] = X86_OP_ENTRY0(SYSRET, chk3(o64_intel, prot, cpl0)), + [0x10] = X86_OP_GROUP0(0F10), [0x11] = X86_OP_GROUP0(0F11), [0x12] = X86_OP_GROUP0(0F12), @@ -1046,6 +1054,13 @@ static const X86OpEntry opcodes_0F[256] = { [0x22] = X86_OP_GROUPwr(MOV_CR_DR, C,y_d64, R,y_d64, zextT0 chk(cpl0) svm(WRITE_CR0)), [0x23] = X86_OP_GROUPwr(MOV_CR_DR, D,y_d64, R,y_d64, zextT0 chk(cpl0) svm(WRITE_DR0)), + [0x30] = X86_OP_ENTRY0(WRMSR, chk(cpl0)), + [0x31] = X86_OP_ENTRY0(RDTSC), + [0x32] = X86_OP_ENTRY0(RDMSR, chk(cpl0)), + [0x33] = X86_OP_ENTRY0(RDPMC), + [0x34] = X86_OP_ENTRY0(SYSENTER, chk2(i64_amd, prot_or_vm86)), + [0x35] = X86_OP_ENTRY0(SYSEXIT, chk3(i64_amd, prot, cpl0)), + [0x40] = X86_OP_ENTRY2(CMOVcc, G,v, E,v, cpuid(CMOV)), [0x41] = X86_OP_ENTRY2(CMOVcc, G,v, E,v, cpuid(CMOV)), [0x42] = X86_OP_ENTRY2(CMOVcc, G,v, E,v, cpuid(CMOV)), @@ -1102,6 +1117,7 @@ static const X86OpEntry opcodes_0F[256] = { [0xa0] = X86_OP_ENTRYr(PUSH, FS, w), [0xa1] = X86_OP_ENTRYw(POP, FS, w), + [0xa2] = X86_OP_ENTRY0(CPUID), [0xb2] = X86_OP_ENTRY3(LSS, G,v, EM,p, None, None), [0xb4] = X86_OP_ENTRY3(LFS, G,v, EM,p, None, None), @@ -1142,6 +1158,8 @@ static const X86OpEntry opcodes_0F[256] = { [0xf6] = X86_OP_ENTRY3(PSADBW, V,x, H,x, W,x, vex4 mmx avx2_256 p_00_66), [0xf7] = X86_OP_ENTRY3(MASKMOV, None,None, V,dq, U,dq, vex4_unal avx2_256 mmx p_00_66), + [0x08] = X86_OP_ENTRY0(NOP, svm(INVD)), + [0x09] = X86_OP_ENTRY0(NOP, svm(WBINVD)), [0x0b] = X86_OP_ENTRY0(UD), /* UD2 */ [0x0d] = X86_OP_ENTRY1(NOP, M,v), /* 3DNow! prefetch */ [0x0e] = X86_OP_ENTRY0(EMMS, cpuid(3DNOW)), /* femms */ @@ -1225,6 +1243,7 @@ static const X86OpEntry opcodes_0F[256] = { [0xa8] = X86_OP_ENTRYr(PUSH, GS, w), [0xa9] = X86_OP_ENTRYw(POP, GS, w), + [0xaa] = X86_OP_ENTRY0(RSM, chk(smm) svm(RSM)), [0xae] = X86_OP_GROUP0(group15), /* * It's slightly more efficient to put Ev operand in T0 and allow gen_IMUL3 @@ -2519,12 +2538,10 @@ static void disas_insn(DisasContext *s, CPUState *cpu) if (b == 0x0f) { b = x86_ldub_code(env, s); switch (b) { - case 0x00 ... 0x03: /* mostly privileged instructions */ - case 0x05 ... 0x09: + case 0x00 ... 0x01: /* mostly privileged instructions */ case 0x1a ... 0x1b: /* MPX */ - case 0x30 ... 0x35: /* more privileged instructions */ - case 0xa2 ... 0xa5: /* CPUID, BT, SHLD */ - case 0xaa ... 0xad: /* RSM, SHRD */ + case 0xa3 ... 0xa5: /* BT, SHLD */ + case 0xab ... 0xad: /* BTS, SHRD */ case 0xb0 ... 0xb1: /* cmpxchg */ case 0xb3: /* btr */ case 0xb8: /* integer ops */ @@ -2556,13 +2573,18 @@ static void disas_insn(DisasContext *s, CPUState *cpu) /* Checks that result in #UD come first. */ if (decode.e.check) { - if (decode.e.check & X86_CHECK_i64) { - if (CODE64(s)) { + if (CODE64(s)) { + if (decode.e.check & X86_CHECK_i64) { goto illegal_op; } - } - if (decode.e.check & X86_CHECK_o64) { - if (!CODE64(s)) { + if ((decode.e.check & X86_CHECK_i64_amd) && env->cpuid_vendor1 != CPUID_VENDOR_INTEL_1) { + goto illegal_op; + } + } else { + if (decode.e.check & X86_CHECK_o64) { + goto illegal_op; + } + if ((decode.e.check & X86_CHECK_o64_intel) && env->cpuid_vendor1 == CPUID_VENDOR_INTEL_1) { goto illegal_op; } } @@ -2646,8 +2668,7 @@ static void disas_insn(DisasContext *s, CPUState *cpu) * exceptions if there is no memory operand). Exceptions are * vm86 checks (INTn, IRET, PUSHF/POPF), RSM and XSETBV (!). * - * RSM and XSETBV will be handled in the gen_* functions - * instead of using chk(). + * XSETBV will check for CPL0 in the gen_* function instead of using chk(). */ if (decode.e.check & X86_CHECK_cpl0) { if (CPL(s) != 0) { @@ -2659,6 +2680,9 @@ static void disas_insn(DisasContext *s, CPUState *cpu) tcg_constant_i32(decode.e.intercept)); } if (decode.e.check) { + if ((decode.e.check & X86_CHECK_smm) && !(s->flags & HF_SMM_MASK)) { + goto illegal_op; + } if ((decode.e.check & X86_CHECK_vm86_iopl) && VM86(s)) { if (IOPL(s) < 3) { goto gp_fault; diff --git a/target/i386/tcg/decode-new.h b/target/i386/tcg/decode-new.h index 1af28ef..e8d7d69 100644 --- a/target/i386/tcg/decode-new.h +++ b/target/i386/tcg/decode-new.h @@ -171,6 +171,13 @@ typedef enum X86InsnCheck { /* Fault outside protected mode, possibly including vm86 mode */ X86_CHECK_prot_or_vm86 = 512, X86_CHECK_prot = X86_CHECK_prot_or_vm86 | X86_CHECK_no_vm86, + + /* Fault outside SMM */ + X86_CHECK_smm = 1024, + + /* Vendor-specific checks for Intel/AMD differences */ + X86_CHECK_i64_amd = 2048, + X86_CHECK_o64_intel = 4096, } X86InsnCheck; typedef enum X86InsnSpecial { diff --git a/target/i386/tcg/emit.c.inc b/target/i386/tcg/emit.c.inc index 9649a6d..2cfa453 100644 --- a/target/i386/tcg/emit.c.inc +++ b/target/i386/tcg/emit.c.inc @@ -1414,6 +1414,13 @@ static void gen_CLI(DisasContext *s, X86DecodedInsn *decode) gen_reset_eflags(s, IF_MASK); } +static void gen_CLTS(DisasContext *s, X86DecodedInsn *decode) +{ + gen_helper_clts(tcg_env); + /* abort block because static cpu state changed */ + s->base.is_jmp = DISAS_EOB_NEXT; +} + static void gen_CMC(DisasContext *s, X86DecodedInsn *decode) { gen_compute_eflags(s); @@ -1538,6 +1545,13 @@ static void gen_CMPS(DisasContext *s, X86DecodedInsn *decode) } } +static void gen_CPUID(DisasContext *s, X86DecodedInsn *decode) +{ + gen_update_cc_op(s); + gen_update_eip_cur(s); + gen_helper_cpuid(tcg_env); +} + static void gen_CRC32(DisasContext *s, X86DecodedInsn *decode) { MemOp ot = decode->op[2].ot; @@ -1661,16 +1675,18 @@ static void gen_FXRSTOR(DisasContext *s, X86DecodedInsn *decode) { if ((s->flags & HF_EM_MASK) || (s->flags & HF_TS_MASK)) { gen_NM_exception(s); + } else { + gen_helper_fxrstor(tcg_env, s->A0); } - gen_helper_fxrstor(tcg_env, s->A0); } static void gen_FXSAVE(DisasContext *s, X86DecodedInsn *decode) { if ((s->flags & HF_EM_MASK) || (s->flags & HF_TS_MASK)) { gen_NM_exception(s); + } else { + gen_helper_fxsave(tcg_env, s->A0); } - gen_helper_fxsave(tcg_env, s->A0); } static void gen_HLT(DisasContext *s, X86DecodedInsn *decode) @@ -1981,6 +1997,23 @@ static void gen_LAHF(DisasContext *s, X86DecodedInsn *decode) tcg_gen_deposit_tl(cpu_regs[R_EAX], cpu_regs[R_EAX], s->T0, 8, 8); } +static void gen_LAR(DisasContext *s, X86DecodedInsn *decode) +{ + MemOp ot = decode->op[0].ot; + TCGv result = tcg_temp_new(); + TCGv dest; + + gen_compute_eflags(s); + gen_update_cc_op(s); + gen_helper_lar(result, tcg_env, s->T0); + + /* Perform writeback here to skip it if ZF=0. */ + decode->op[0].unit = X86_OP_SKIP; + dest = gen_op_deposit_reg_v(s, ot, decode->op[0].n, result, result); + tcg_gen_movcond_tl(TCG_COND_TSTNE, dest, cpu_cc_src, tcg_constant_tl(CC_Z), + result, dest); +} + static void gen_LDMXCSR(DisasContext *s, X86DecodedInsn *decode) { tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0); @@ -2079,6 +2112,23 @@ static void gen_LOOPNE(DisasContext *s, X86DecodedInsn *decode) gen_conditional_jump_labels(s, decode->immediate, not_taken, taken); } +static void gen_LSL(DisasContext *s, X86DecodedInsn *decode) +{ + MemOp ot = decode->op[0].ot; + TCGv result = tcg_temp_new(); + TCGv dest; + + gen_compute_eflags(s); + gen_update_cc_op(s); + gen_helper_lsl(result, tcg_env, s->T0); + + /* Perform writeback here to skip it if ZF=0. */ + decode->op[0].unit = X86_OP_SKIP; + dest = gen_op_deposit_reg_v(s, ot, decode->op[0].n, result, result); + tcg_gen_movcond_tl(TCG_COND_TSTNE, dest, cpu_cc_src, tcg_constant_tl(CC_Z), + result, dest); +} + static void gen_LSS(DisasContext *s, X86DecodedInsn *decode) { gen_lxx_seg(s, decode, R_SS); @@ -3122,6 +3172,41 @@ static void gen_RCR(DisasContext *s, X86DecodedInsn *decode) } } +#ifdef CONFIG_USER_ONLY +static void gen_unreachable(DisasContext *s, X86DecodedInsn *decode) +{ + g_assert_not_reached(); +} +#endif + +#ifndef CONFIG_USER_ONLY +static void gen_RDMSR(DisasContext *s, X86DecodedInsn *decode) +{ + gen_update_cc_op(s); + gen_update_eip_cur(s); + gen_helper_rdmsr(tcg_env); +} +#else +#define gen_RDMSR gen_unreachable +#endif + +static void gen_RDPMC(DisasContext *s, X86DecodedInsn *decode) +{ + gen_update_cc_op(s); + gen_update_eip_cur(s); + translator_io_start(&s->base); + gen_helper_rdpmc(tcg_env); + s->base.is_jmp = DISAS_NORETURN; +} + +static void gen_RDTSC(DisasContext *s, X86DecodedInsn *decode) +{ + gen_update_cc_op(s); + gen_update_eip_cur(s); + translator_io_start(&s->base); + gen_helper_rdtsc(tcg_env); +} + static void gen_RDxxBASE(DisasContext *s, X86DecodedInsn *decode) { TCGv base = cpu_seg_base[s->modrm & 8 ? R_GS : R_FS]; @@ -3294,6 +3379,17 @@ static void gen_RORX(DisasContext *s, X86DecodedInsn *decode) } } +#ifndef CONFIG_USER_ONLY +static void gen_RSM(DisasContext *s, X86DecodedInsn *decode) +{ + gen_helper_rsm(tcg_env); + assume_cc_op(s, CC_OP_EFLAGS); + s->base.is_jmp = DISAS_EOB_ONLY; +} +#else +#define gen_RSM gen_UD +#endif + static void gen_SAHF(DisasContext *s, X86DecodedInsn *decode) { if (CODE64(s) && !(s->cpuid_ext3_features & CPUID_EXT3_LAHF_LM)) { @@ -3590,6 +3686,51 @@ static void gen_SUB(DisasContext *s, X86DecodedInsn *decode) prepare_update2_cc(decode, s, CC_OP_SUBB + ot); } +static void gen_SYSCALL(DisasContext *s, X86DecodedInsn *decode) +{ + gen_update_cc_op(s); + gen_update_eip_cur(s); + gen_helper_syscall(tcg_env, cur_insn_len_i32(s)); + if (LMA(s)) { + assume_cc_op(s, CC_OP_EFLAGS); + } + + /* + * TF handling for the syscall insn is different. The TF bit is checked + * after the syscall insn completes. This allows #DB to not be + * generated after one has entered CPL0 if TF is set in FMASK. + */ + s->base.is_jmp = DISAS_EOB_RECHECK_TF; +} + +static void gen_SYSENTER(DisasContext *s, X86DecodedInsn *decode) +{ + gen_helper_sysenter(tcg_env); + s->base.is_jmp = DISAS_EOB_ONLY; +} + +static void gen_SYSEXIT(DisasContext *s, X86DecodedInsn *decode) +{ + gen_helper_sysexit(tcg_env, tcg_constant_i32(s->dflag - 1)); + s->base.is_jmp = DISAS_EOB_ONLY; +} + +static void gen_SYSRET(DisasContext *s, X86DecodedInsn *decode) +{ + gen_helper_sysret(tcg_env, tcg_constant_i32(s->dflag - 1)); + if (LMA(s)) { + assume_cc_op(s, CC_OP_EFLAGS); + } + + /* + * TF handling for the sysret insn is different. The TF bit is checked + * after the sysret insn completes. This allows #DB to be + * generated "as if" the syscall insn in userspace has just + * completed. + */ + s->base.is_jmp = DISAS_EOB_RECHECK_TF; +} + static void gen_UD(DisasContext *s, X86DecodedInsn *decode) { gen_illegal_opcode(s); @@ -4086,6 +4227,18 @@ static void gen_WAIT(DisasContext *s, X86DecodedInsn *decode) } } +#ifndef CONFIG_USER_ONLY +static void gen_WRMSR(DisasContext *s, X86DecodedInsn *decode) +{ + gen_update_cc_op(s); + gen_update_eip_cur(s); + gen_helper_wrmsr(tcg_env); + s->base.is_jmp = DISAS_EOB_NEXT; +} +#else +#define gen_WRMSR gen_unreachable +#endif + static void gen_WRxxBASE(DisasContext *s, X86DecodedInsn *decode) { TCGv base = cpu_seg_base[s->modrm & 8 ? R_GS : R_FS]; diff --git a/target/i386/tcg/seg_helper.c b/target/i386/tcg/seg_helper.c index 715db1f..aee3d19 100644 --- a/target/i386/tcg/seg_helper.c +++ b/target/i386/tcg/seg_helper.c @@ -2265,11 +2265,11 @@ void helper_sysexit(CPUX86State *env, int dflag) target_ulong helper_lsl(CPUX86State *env, target_ulong selector1) { unsigned int limit; - uint32_t e1, e2, eflags, selector; + uint32_t e1, e2, selector; int rpl, dpl, cpl, type; selector = selector1 & 0xffff; - eflags = cpu_cc_compute_all(env); + assert(CC_OP == CC_OP_EFLAGS); if ((selector & 0xfffc) == 0) { goto fail; } @@ -2301,22 +2301,22 @@ target_ulong helper_lsl(CPUX86State *env, target_ulong selector1) } if (dpl < cpl || dpl < rpl) { fail: - CC_SRC = eflags & ~CC_Z; + CC_SRC &= ~CC_Z; return 0; } } limit = get_seg_limit(e1, e2); - CC_SRC = eflags | CC_Z; + CC_SRC |= CC_Z; return limit; } target_ulong helper_lar(CPUX86State *env, target_ulong selector1) { - uint32_t e1, e2, eflags, selector; + uint32_t e1, e2, selector; int rpl, dpl, cpl, type; selector = selector1 & 0xffff; - eflags = cpu_cc_compute_all(env); + assert(CC_OP == CC_OP_EFLAGS); if ((selector & 0xfffc) == 0) { goto fail; } @@ -2351,11 +2351,11 @@ target_ulong helper_lar(CPUX86State *env, target_ulong selector1) } if (dpl < cpl || dpl < rpl) { fail: - CC_SRC = eflags & ~CC_Z; + CC_SRC &= ~CC_Z; return 0; } } - CC_SRC = eflags | CC_Z; + CC_SRC |= CC_Z; return e2 & 0x00f0ff00; } diff --git a/target/i386/tcg/translate.c b/target/i386/tcg/translate.c index ebae745..4b2f748 100644 --- a/target/i386/tcg/translate.c +++ b/target/i386/tcg/translate.c @@ -246,7 +246,6 @@ STUB_HELPER(mwait, TCGv_env env, TCGv_i32 pc_ofs) STUB_HELPER(outb, TCGv_env env, TCGv_i32 port, TCGv_i32 val) STUB_HELPER(outw, TCGv_env env, TCGv_i32 port, TCGv_i32 val) STUB_HELPER(outl, TCGv_env env, TCGv_i32 port, TCGv_i32 val) -STUB_HELPER(rdmsr, TCGv_env env) STUB_HELPER(stgi, TCGv_env env) STUB_HELPER(svm_check_intercept, TCGv_env env, TCGv_i32 type) STUB_HELPER(vmload, TCGv_env env, TCGv_i32 aflag) @@ -254,7 +253,6 @@ STUB_HELPER(vmmcall, TCGv_env env) STUB_HELPER(vmrun, TCGv_env env, TCGv_i32 aflag, TCGv_i32 pc_ofs) STUB_HELPER(vmsave, TCGv_env env, TCGv_i32 aflag) STUB_HELPER(write_crN, TCGv_env env, TCGv_i32 reg, TCGv val) -STUB_HELPER(wrmsr, TCGv_env env) #endif static void gen_jmp_rel(DisasContext *s, MemOp ot, int diff, int tb_num); @@ -3470,97 +3468,6 @@ static void disas_insn_old(DisasContext *s, CPUState *cpu, int b) } gen_op_mov_reg_v(s, ot, reg, s->T0); break; - case 0x130: /* wrmsr */ - case 0x132: /* rdmsr */ - if (check_cpl0(s)) { - gen_update_cc_op(s); - gen_update_eip_cur(s); - if (b & 2) { - gen_helper_rdmsr(tcg_env); - } else { - gen_helper_wrmsr(tcg_env); - s->base.is_jmp = DISAS_EOB_NEXT; - } - } - break; - case 0x131: /* rdtsc */ - gen_update_cc_op(s); - gen_update_eip_cur(s); - translator_io_start(&s->base); - gen_helper_rdtsc(tcg_env); - break; - case 0x133: /* rdpmc */ - gen_update_cc_op(s); - gen_update_eip_cur(s); - gen_helper_rdpmc(tcg_env); - s->base.is_jmp = DISAS_NORETURN; - break; - case 0x134: /* sysenter */ - /* For AMD SYSENTER is not valid in long mode */ - if (LMA(s) && env->cpuid_vendor1 != CPUID_VENDOR_INTEL_1) { - goto illegal_op; - } - if (!PE(s)) { - gen_exception_gpf(s); - } else { - gen_helper_sysenter(tcg_env); - s->base.is_jmp = DISAS_EOB_ONLY; - } - break; - case 0x135: /* sysexit */ - /* For AMD SYSEXIT is not valid in long mode */ - if (LMA(s) && env->cpuid_vendor1 != CPUID_VENDOR_INTEL_1) { - goto illegal_op; - } - if (!PE(s) || CPL(s) != 0) { - gen_exception_gpf(s); - } else { - gen_helper_sysexit(tcg_env, tcg_constant_i32(dflag - 1)); - s->base.is_jmp = DISAS_EOB_ONLY; - } - break; - case 0x105: /* syscall */ - /* For Intel SYSCALL is only valid in long mode */ - if (!LMA(s) && env->cpuid_vendor1 == CPUID_VENDOR_INTEL_1) { - goto illegal_op; - } - gen_update_cc_op(s); - gen_update_eip_cur(s); - gen_helper_syscall(tcg_env, cur_insn_len_i32(s)); - /* condition codes are modified only in long mode */ - if (LMA(s)) { - assume_cc_op(s, CC_OP_EFLAGS); - } - /* TF handling for the syscall insn is different. The TF bit is checked - after the syscall insn completes. This allows #DB to not be - generated after one has entered CPL0 if TF is set in FMASK. */ - s->base.is_jmp = DISAS_EOB_RECHECK_TF; - break; - case 0x107: /* sysret */ - /* For Intel SYSRET is only valid in long mode */ - if (!LMA(s) && env->cpuid_vendor1 == CPUID_VENDOR_INTEL_1) { - goto illegal_op; - } - if (!PE(s) || CPL(s) != 0) { - gen_exception_gpf(s); - } else { - gen_helper_sysret(tcg_env, tcg_constant_i32(dflag - 1)); - /* condition codes are modified only in long mode */ - if (LMA(s)) { - assume_cc_op(s, CC_OP_EFLAGS); - } - /* TF handling for the sysret insn is different. The TF bit is - checked after the sysret insn completes. This allows #DB to be - generated "as if" the syscall insn in userspace has just - completed. */ - s->base.is_jmp = DISAS_EOB_RECHECK_TF; - } - break; - case 0x1a2: /* cpuid */ - gen_update_cc_op(s); - gen_update_eip_cur(s); - gen_helper_cpuid(tcg_env); - break; case 0x100: modrm = x86_ldub_code(env, s); mod = (modrm >> 6) & 3; @@ -3964,39 +3871,6 @@ static void disas_insn_old(DisasContext *s, CPUState *cpu, int b) } break; - case 0x108: /* invd */ - case 0x109: /* wbinvd; wbnoinvd with REPZ prefix */ - if (check_cpl0(s)) { - gen_svm_check_intercept(s, (b & 1) ? SVM_EXIT_WBINVD : SVM_EXIT_INVD); - /* nothing to do */ - } - break; - case 0x102: /* lar */ - case 0x103: /* lsl */ - { - TCGLabel *label1; - TCGv t0; - if (!PE(s) || VM86(s)) - goto illegal_op; - ot = dflag != MO_16 ? MO_32 : MO_16; - modrm = x86_ldub_code(env, s); - reg = ((modrm >> 3) & 7) | REX_R(s); - gen_ld_modrm(env, s, modrm, MO_16); - t0 = tcg_temp_new(); - gen_update_cc_op(s); - if (b == 0x102) { - gen_helper_lar(t0, tcg_env, s->T0); - } else { - gen_helper_lsl(t0, tcg_env, s->T0); - } - tcg_gen_andi_tl(s->tmp0, cpu_cc_src, CC_Z); - label1 = gen_new_label(); - tcg_gen_brcondi_tl(TCG_COND_EQ, s->tmp0, 0, label1); - gen_op_mov_reg_v(s, ot, reg, t0); - gen_set_label(label1); - set_cc_op(s, CC_OP_EFLAGS); - } - break; case 0x11a: modrm = x86_ldub_code(env, s); if (s->flags & HF_MPX_EN_MASK) { @@ -4188,28 +4062,6 @@ static void disas_insn_old(DisasContext *s, CPUState *cpu, int b) } gen_nop_modrm(env, s, modrm); break; - - case 0x106: /* clts */ - if (check_cpl0(s)) { - gen_svm_check_intercept(s, SVM_EXIT_WRITE_CR0); - gen_helper_clts(tcg_env); - /* abort block because static cpu state changed */ - s->base.is_jmp = DISAS_EOB_NEXT; - } - break; - case 0x1aa: /* rsm */ - gen_svm_check_intercept(s, SVM_EXIT_RSM); - if (!(s->flags & HF_SMM_MASK)) - goto illegal_op; -#ifdef CONFIG_USER_ONLY - /* we should not be in SMM mode */ - g_assert_not_reached(); -#else - gen_helper_rsm(tcg_env); - assume_cc_op(s, CC_OP_EFLAGS); -#endif /* CONFIG_USER_ONLY */ - s->base.is_jmp = DISAS_EOB_ONLY; - break; case 0x1b8: /* SSE4.2 popcnt */ if ((prefixes & (PREFIX_REPZ | PREFIX_LOCK | PREFIX_REPNZ)) != PREFIX_REPZ) |