35d95e4126
When translating code that is using LAHF and SAHF in combination with the REX prefix, the instructions should not use any other register than AH; however, QEMU selects SPL (SP being register 4, just like AH) if the REX prefix is present. To fix this, use deposit directly without going through gen_op_mov_v_reg and gen_op_mov_reg_v. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/130 Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
7076 lines
227 KiB
C
7076 lines
227 KiB
C
/*
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* i386 translation
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*
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* Copyright (c) 2003 Fabrice Bellard
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include "qemu/osdep.h"
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#include "qemu/host-utils.h"
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#include "cpu.h"
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#include "disas/disas.h"
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#include "exec/exec-all.h"
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#include "tcg/tcg-op.h"
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#include "tcg/tcg-op-gvec.h"
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#include "exec/cpu_ldst.h"
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#include "exec/translator.h"
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#include "fpu/softfloat.h"
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#include "exec/helper-proto.h"
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#include "exec/helper-gen.h"
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#include "helper-tcg.h"
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#include "exec/log.h"
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#define PREFIX_REPZ 0x01
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#define PREFIX_REPNZ 0x02
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#define PREFIX_LOCK 0x04
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#define PREFIX_DATA 0x08
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#define PREFIX_ADR 0x10
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#define PREFIX_VEX 0x20
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#define PREFIX_REX 0x40
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#ifdef TARGET_X86_64
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# define ctztl ctz64
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# define clztl clz64
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#else
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# define ctztl ctz32
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# define clztl clz32
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#endif
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/* For a switch indexed by MODRM, match all memory operands for a given OP. */
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#define CASE_MODRM_MEM_OP(OP) \
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case (0 << 6) | (OP << 3) | 0 ... (0 << 6) | (OP << 3) | 7: \
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case (1 << 6) | (OP << 3) | 0 ... (1 << 6) | (OP << 3) | 7: \
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case (2 << 6) | (OP << 3) | 0 ... (2 << 6) | (OP << 3) | 7
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#define CASE_MODRM_OP(OP) \
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case (0 << 6) | (OP << 3) | 0 ... (0 << 6) | (OP << 3) | 7: \
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case (1 << 6) | (OP << 3) | 0 ... (1 << 6) | (OP << 3) | 7: \
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case (2 << 6) | (OP << 3) | 0 ... (2 << 6) | (OP << 3) | 7: \
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case (3 << 6) | (OP << 3) | 0 ... (3 << 6) | (OP << 3) | 7
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//#define MACRO_TEST 1
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/* global register indexes */
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static TCGv cpu_cc_dst, cpu_cc_src, cpu_cc_src2;
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static TCGv cpu_eip;
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static TCGv_i32 cpu_cc_op;
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static TCGv cpu_regs[CPU_NB_REGS];
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static TCGv cpu_seg_base[6];
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static TCGv_i64 cpu_bndl[4];
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static TCGv_i64 cpu_bndu[4];
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#include "exec/gen-icount.h"
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typedef struct DisasContext {
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DisasContextBase base;
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target_ulong pc; /* pc = eip + cs_base */
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target_ulong cs_base; /* base of CS segment */
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target_ulong pc_save;
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MemOp aflag;
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MemOp dflag;
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int8_t override; /* -1 if no override, else R_CS, R_DS, etc */
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uint8_t prefix;
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bool has_modrm;
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uint8_t modrm;
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#ifndef CONFIG_USER_ONLY
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uint8_t cpl; /* code priv level */
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uint8_t iopl; /* i/o priv level */
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#endif
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uint8_t vex_l; /* vex vector length */
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uint8_t vex_v; /* vex vvvv register, without 1's complement. */
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uint8_t popl_esp_hack; /* for correct popl with esp base handling */
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uint8_t rip_offset; /* only used in x86_64, but left for simplicity */
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#ifdef TARGET_X86_64
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uint8_t rex_r;
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uint8_t rex_x;
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uint8_t rex_b;
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#endif
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bool vex_w; /* used by AVX even on 32-bit processors */
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bool jmp_opt; /* use direct block chaining for direct jumps */
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bool repz_opt; /* optimize jumps within repz instructions */
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bool cc_op_dirty;
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CCOp cc_op; /* current CC operation */
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int mem_index; /* select memory access functions */
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uint32_t flags; /* all execution flags */
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int cpuid_features;
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int cpuid_ext_features;
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int cpuid_ext2_features;
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int cpuid_ext3_features;
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int cpuid_7_0_ebx_features;
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int cpuid_7_0_ecx_features;
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int cpuid_xsave_features;
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/* TCG local temps */
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TCGv cc_srcT;
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TCGv A0;
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TCGv T0;
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TCGv T1;
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/* TCG local register indexes (only used inside old micro ops) */
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TCGv tmp0;
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TCGv tmp4;
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TCGv_i32 tmp2_i32;
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TCGv_i32 tmp3_i32;
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TCGv_i64 tmp1_i64;
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sigjmp_buf jmpbuf;
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TCGOp *prev_insn_end;
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} DisasContext;
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#define DISAS_EOB_ONLY DISAS_TARGET_0
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#define DISAS_EOB_NEXT DISAS_TARGET_1
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#define DISAS_EOB_INHIBIT_IRQ DISAS_TARGET_2
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#define DISAS_JUMP DISAS_TARGET_3
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/* The environment in which user-only runs is constrained. */
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#ifdef CONFIG_USER_ONLY
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#define PE(S) true
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#define CPL(S) 3
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#define IOPL(S) 0
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#define SVME(S) false
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#define GUEST(S) false
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#else
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#define PE(S) (((S)->flags & HF_PE_MASK) != 0)
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#define CPL(S) ((S)->cpl)
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#define IOPL(S) ((S)->iopl)
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#define SVME(S) (((S)->flags & HF_SVME_MASK) != 0)
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#define GUEST(S) (((S)->flags & HF_GUEST_MASK) != 0)
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#endif
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#if defined(CONFIG_USER_ONLY) && defined(TARGET_X86_64)
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#define VM86(S) false
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#define CODE32(S) true
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#define SS32(S) true
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#define ADDSEG(S) false
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#else
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#define VM86(S) (((S)->flags & HF_VM_MASK) != 0)
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#define CODE32(S) (((S)->flags & HF_CS32_MASK) != 0)
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#define SS32(S) (((S)->flags & HF_SS32_MASK) != 0)
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#define ADDSEG(S) (((S)->flags & HF_ADDSEG_MASK) != 0)
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#endif
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#if !defined(TARGET_X86_64)
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#define CODE64(S) false
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#define LMA(S) false
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#elif defined(CONFIG_USER_ONLY)
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#define CODE64(S) true
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#define LMA(S) true
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#else
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#define CODE64(S) (((S)->flags & HF_CS64_MASK) != 0)
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#define LMA(S) (((S)->flags & HF_LMA_MASK) != 0)
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#endif
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#ifdef TARGET_X86_64
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#define REX_PREFIX(S) (((S)->prefix & PREFIX_REX) != 0)
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#define REX_W(S) ((S)->vex_w)
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#define REX_R(S) ((S)->rex_r + 0)
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#define REX_X(S) ((S)->rex_x + 0)
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#define REX_B(S) ((S)->rex_b + 0)
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#else
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#define REX_PREFIX(S) false
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#define REX_W(S) false
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#define REX_R(S) 0
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#define REX_X(S) 0
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#define REX_B(S) 0
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#endif
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/*
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* Many sysemu-only helpers are not reachable for user-only.
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* Define stub generators here, so that we need not either sprinkle
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* ifdefs through the translator, nor provide the helper function.
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*/
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#define STUB_HELPER(NAME, ...) \
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static inline void gen_helper_##NAME(__VA_ARGS__) \
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{ qemu_build_not_reached(); }
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#ifdef CONFIG_USER_ONLY
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STUB_HELPER(clgi, TCGv_env env)
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STUB_HELPER(flush_page, TCGv_env env, TCGv addr)
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STUB_HELPER(hlt, TCGv_env env, TCGv_i32 pc_ofs)
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STUB_HELPER(inb, TCGv ret, TCGv_env env, TCGv_i32 port)
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STUB_HELPER(inw, TCGv ret, TCGv_env env, TCGv_i32 port)
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STUB_HELPER(inl, TCGv ret, TCGv_env env, TCGv_i32 port)
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STUB_HELPER(monitor, TCGv_env env, TCGv addr)
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STUB_HELPER(mwait, TCGv_env env, TCGv_i32 pc_ofs)
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STUB_HELPER(outb, TCGv_env env, TCGv_i32 port, TCGv_i32 val)
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STUB_HELPER(outw, TCGv_env env, TCGv_i32 port, TCGv_i32 val)
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STUB_HELPER(outl, TCGv_env env, TCGv_i32 port, TCGv_i32 val)
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STUB_HELPER(rdmsr, TCGv_env env)
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STUB_HELPER(read_crN, TCGv ret, TCGv_env env, TCGv_i32 reg)
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STUB_HELPER(get_dr, TCGv ret, TCGv_env env, TCGv_i32 reg)
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STUB_HELPER(set_dr, TCGv_env env, TCGv_i32 reg, TCGv val)
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STUB_HELPER(stgi, TCGv_env env)
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STUB_HELPER(svm_check_intercept, TCGv_env env, TCGv_i32 type)
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STUB_HELPER(vmload, TCGv_env env, TCGv_i32 aflag)
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STUB_HELPER(vmmcall, TCGv_env env)
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STUB_HELPER(vmrun, TCGv_env env, TCGv_i32 aflag, TCGv_i32 pc_ofs)
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STUB_HELPER(vmsave, TCGv_env env, TCGv_i32 aflag)
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STUB_HELPER(write_crN, TCGv_env env, TCGv_i32 reg, TCGv val)
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STUB_HELPER(wrmsr, TCGv_env env)
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#endif
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static void gen_eob(DisasContext *s);
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static void gen_jr(DisasContext *s);
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static void gen_jmp_rel(DisasContext *s, MemOp ot, int diff, int tb_num);
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static void gen_jmp_rel_csize(DisasContext *s, int diff, int tb_num);
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static void gen_op(DisasContext *s1, int op, MemOp ot, int d);
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static void gen_exception_gpf(DisasContext *s);
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/* i386 arith/logic operations */
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enum {
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OP_ADDL,
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OP_ORL,
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OP_ADCL,
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OP_SBBL,
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OP_ANDL,
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OP_SUBL,
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OP_XORL,
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OP_CMPL,
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};
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/* i386 shift ops */
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enum {
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OP_ROL,
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OP_ROR,
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OP_RCL,
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OP_RCR,
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OP_SHL,
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OP_SHR,
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OP_SHL1, /* undocumented */
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OP_SAR = 7,
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};
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enum {
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JCC_O,
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JCC_B,
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JCC_Z,
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JCC_BE,
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JCC_S,
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JCC_P,
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JCC_L,
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JCC_LE,
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};
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enum {
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/* I386 int registers */
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OR_EAX, /* MUST be even numbered */
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OR_ECX,
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OR_EDX,
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OR_EBX,
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OR_ESP,
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OR_EBP,
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OR_ESI,
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OR_EDI,
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OR_TMP0 = 16, /* temporary operand register */
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OR_TMP1,
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OR_A0, /* temporary register used when doing address evaluation */
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};
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enum {
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USES_CC_DST = 1,
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USES_CC_SRC = 2,
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USES_CC_SRC2 = 4,
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USES_CC_SRCT = 8,
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};
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/* Bit set if the global variable is live after setting CC_OP to X. */
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static const uint8_t cc_op_live[CC_OP_NB] = {
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[CC_OP_DYNAMIC] = USES_CC_DST | USES_CC_SRC | USES_CC_SRC2,
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[CC_OP_EFLAGS] = USES_CC_SRC,
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[CC_OP_MULB ... CC_OP_MULQ] = USES_CC_DST | USES_CC_SRC,
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[CC_OP_ADDB ... CC_OP_ADDQ] = USES_CC_DST | USES_CC_SRC,
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[CC_OP_ADCB ... CC_OP_ADCQ] = USES_CC_DST | USES_CC_SRC | USES_CC_SRC2,
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[CC_OP_SUBB ... CC_OP_SUBQ] = USES_CC_DST | USES_CC_SRC | USES_CC_SRCT,
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[CC_OP_SBBB ... CC_OP_SBBQ] = USES_CC_DST | USES_CC_SRC | USES_CC_SRC2,
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[CC_OP_LOGICB ... CC_OP_LOGICQ] = USES_CC_DST,
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[CC_OP_INCB ... CC_OP_INCQ] = USES_CC_DST | USES_CC_SRC,
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[CC_OP_DECB ... CC_OP_DECQ] = USES_CC_DST | USES_CC_SRC,
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[CC_OP_SHLB ... CC_OP_SHLQ] = USES_CC_DST | USES_CC_SRC,
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[CC_OP_SARB ... CC_OP_SARQ] = USES_CC_DST | USES_CC_SRC,
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[CC_OP_BMILGB ... CC_OP_BMILGQ] = USES_CC_DST | USES_CC_SRC,
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[CC_OP_ADCX] = USES_CC_DST | USES_CC_SRC,
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[CC_OP_ADOX] = USES_CC_SRC | USES_CC_SRC2,
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[CC_OP_ADCOX] = USES_CC_DST | USES_CC_SRC | USES_CC_SRC2,
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[CC_OP_CLR] = 0,
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[CC_OP_POPCNT] = USES_CC_SRC,
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};
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static void set_cc_op(DisasContext *s, CCOp op)
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{
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int dead;
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if (s->cc_op == op) {
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return;
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}
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/* Discard CC computation that will no longer be used. */
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dead = cc_op_live[s->cc_op] & ~cc_op_live[op];
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if (dead & USES_CC_DST) {
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tcg_gen_discard_tl(cpu_cc_dst);
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}
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if (dead & USES_CC_SRC) {
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tcg_gen_discard_tl(cpu_cc_src);
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}
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if (dead & USES_CC_SRC2) {
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tcg_gen_discard_tl(cpu_cc_src2);
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}
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if (dead & USES_CC_SRCT) {
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tcg_gen_discard_tl(s->cc_srcT);
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}
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if (op == CC_OP_DYNAMIC) {
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/* The DYNAMIC setting is translator only, and should never be
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stored. Thus we always consider it clean. */
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s->cc_op_dirty = false;
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} else {
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/* Discard any computed CC_OP value (see shifts). */
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if (s->cc_op == CC_OP_DYNAMIC) {
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tcg_gen_discard_i32(cpu_cc_op);
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}
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s->cc_op_dirty = true;
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}
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s->cc_op = op;
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}
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static void gen_update_cc_op(DisasContext *s)
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{
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if (s->cc_op_dirty) {
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tcg_gen_movi_i32(cpu_cc_op, s->cc_op);
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s->cc_op_dirty = false;
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}
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}
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#ifdef TARGET_X86_64
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#define NB_OP_SIZES 4
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#else /* !TARGET_X86_64 */
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#define NB_OP_SIZES 3
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#endif /* !TARGET_X86_64 */
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#if HOST_BIG_ENDIAN
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#define REG_B_OFFSET (sizeof(target_ulong) - 1)
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#define REG_H_OFFSET (sizeof(target_ulong) - 2)
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#define REG_W_OFFSET (sizeof(target_ulong) - 2)
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#define REG_L_OFFSET (sizeof(target_ulong) - 4)
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#define REG_LH_OFFSET (sizeof(target_ulong) - 8)
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#else
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#define REG_B_OFFSET 0
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#define REG_H_OFFSET 1
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#define REG_W_OFFSET 0
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#define REG_L_OFFSET 0
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#define REG_LH_OFFSET 4
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#endif
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/* In instruction encodings for byte register accesses the
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* register number usually indicates "low 8 bits of register N";
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* however there are some special cases where N 4..7 indicates
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* [AH, CH, DH, BH], ie "bits 15..8 of register N-4". Return
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* true for this special case, false otherwise.
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*/
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static inline bool byte_reg_is_xH(DisasContext *s, int reg)
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{
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/* Any time the REX prefix is present, byte registers are uniform */
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if (reg < 4 || REX_PREFIX(s)) {
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return false;
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}
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return true;
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}
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/* Select the size of a push/pop operation. */
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static inline MemOp mo_pushpop(DisasContext *s, MemOp ot)
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{
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if (CODE64(s)) {
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return ot == MO_16 ? MO_16 : MO_64;
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} else {
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return ot;
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}
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}
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/* Select the size of the stack pointer. */
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static inline MemOp mo_stacksize(DisasContext *s)
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{
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return CODE64(s) ? MO_64 : SS32(s) ? MO_32 : MO_16;
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}
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/* Select only size 64 else 32. Used for SSE operand sizes. */
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static inline MemOp mo_64_32(MemOp ot)
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{
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#ifdef TARGET_X86_64
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return ot == MO_64 ? MO_64 : MO_32;
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#else
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return MO_32;
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#endif
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}
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/* Select size 8 if lsb of B is clear, else OT. Used for decoding
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byte vs word opcodes. */
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static inline MemOp mo_b_d(int b, MemOp ot)
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{
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return b & 1 ? ot : MO_8;
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}
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/* Select size 8 if lsb of B is clear, else OT capped at 32.
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Used for decoding operand size of port opcodes. */
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static inline MemOp mo_b_d32(int b, MemOp ot)
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{
|
|
return b & 1 ? (ot == MO_16 ? MO_16 : MO_32) : MO_8;
|
|
}
|
|
|
|
/* Compute the result of writing t0 to the OT-sized register REG.
|
|
*
|
|
* If DEST is NULL, store the result into the register and return the
|
|
* register's TCGv.
|
|
*
|
|
* If DEST is not NULL, store the result into DEST and return the
|
|
* register's TCGv.
|
|
*/
|
|
static TCGv gen_op_deposit_reg_v(DisasContext *s, MemOp ot, int reg, TCGv dest, TCGv t0)
|
|
{
|
|
switch(ot) {
|
|
case MO_8:
|
|
if (byte_reg_is_xH(s, reg)) {
|
|
dest = dest ? dest : cpu_regs[reg - 4];
|
|
tcg_gen_deposit_tl(dest, cpu_regs[reg - 4], t0, 8, 8);
|
|
return cpu_regs[reg - 4];
|
|
}
|
|
dest = dest ? dest : cpu_regs[reg];
|
|
tcg_gen_deposit_tl(dest, cpu_regs[reg], t0, 0, 8);
|
|
break;
|
|
case MO_16:
|
|
dest = dest ? dest : cpu_regs[reg];
|
|
tcg_gen_deposit_tl(dest, cpu_regs[reg], t0, 0, 16);
|
|
break;
|
|
case MO_32:
|
|
/* For x86_64, this sets the higher half of register to zero.
|
|
For i386, this is equivalent to a mov. */
|
|
dest = dest ? dest : cpu_regs[reg];
|
|
tcg_gen_ext32u_tl(dest, t0);
|
|
break;
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
dest = dest ? dest : cpu_regs[reg];
|
|
tcg_gen_mov_tl(dest, t0);
|
|
break;
|
|
#endif
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
return cpu_regs[reg];
|
|
}
|
|
|
|
static void gen_op_mov_reg_v(DisasContext *s, MemOp ot, int reg, TCGv t0)
|
|
{
|
|
gen_op_deposit_reg_v(s, ot, reg, NULL, t0);
|
|
}
|
|
|
|
static inline
|
|
void gen_op_mov_v_reg(DisasContext *s, MemOp ot, TCGv t0, int reg)
|
|
{
|
|
if (ot == MO_8 && byte_reg_is_xH(s, reg)) {
|
|
tcg_gen_extract_tl(t0, cpu_regs[reg - 4], 8, 8);
|
|
} else {
|
|
tcg_gen_mov_tl(t0, cpu_regs[reg]);
|
|
}
|
|
}
|
|
|
|
static void gen_add_A0_im(DisasContext *s, int val)
|
|
{
|
|
tcg_gen_addi_tl(s->A0, s->A0, val);
|
|
if (!CODE64(s)) {
|
|
tcg_gen_ext32u_tl(s->A0, s->A0);
|
|
}
|
|
}
|
|
|
|
static inline void gen_op_jmp_v(DisasContext *s, TCGv dest)
|
|
{
|
|
tcg_gen_mov_tl(cpu_eip, dest);
|
|
s->pc_save = -1;
|
|
}
|
|
|
|
static inline
|
|
void gen_op_add_reg_im(DisasContext *s, MemOp size, int reg, int32_t val)
|
|
{
|
|
tcg_gen_addi_tl(s->tmp0, cpu_regs[reg], val);
|
|
gen_op_mov_reg_v(s, size, reg, s->tmp0);
|
|
}
|
|
|
|
static inline void gen_op_add_reg_T0(DisasContext *s, MemOp size, int reg)
|
|
{
|
|
tcg_gen_add_tl(s->tmp0, cpu_regs[reg], s->T0);
|
|
gen_op_mov_reg_v(s, size, reg, s->tmp0);
|
|
}
|
|
|
|
static inline void gen_op_ld_v(DisasContext *s, int idx, TCGv t0, TCGv a0)
|
|
{
|
|
tcg_gen_qemu_ld_tl(t0, a0, s->mem_index, idx | MO_LE);
|
|
}
|
|
|
|
static inline void gen_op_st_v(DisasContext *s, int idx, TCGv t0, TCGv a0)
|
|
{
|
|
tcg_gen_qemu_st_tl(t0, a0, s->mem_index, idx | MO_LE);
|
|
}
|
|
|
|
static inline void gen_op_st_rm_T0_A0(DisasContext *s, int idx, int d)
|
|
{
|
|
if (d == OR_TMP0) {
|
|
gen_op_st_v(s, idx, s->T0, s->A0);
|
|
} else {
|
|
gen_op_mov_reg_v(s, idx, d, s->T0);
|
|
}
|
|
}
|
|
|
|
static void gen_update_eip_cur(DisasContext *s)
|
|
{
|
|
assert(s->pc_save != -1);
|
|
if (TARGET_TB_PCREL) {
|
|
tcg_gen_addi_tl(cpu_eip, cpu_eip, s->base.pc_next - s->pc_save);
|
|
} else {
|
|
tcg_gen_movi_tl(cpu_eip, s->base.pc_next - s->cs_base);
|
|
}
|
|
s->pc_save = s->base.pc_next;
|
|
}
|
|
|
|
static void gen_update_eip_next(DisasContext *s)
|
|
{
|
|
assert(s->pc_save != -1);
|
|
if (TARGET_TB_PCREL) {
|
|
tcg_gen_addi_tl(cpu_eip, cpu_eip, s->pc - s->pc_save);
|
|
} else {
|
|
tcg_gen_movi_tl(cpu_eip, s->pc - s->cs_base);
|
|
}
|
|
s->pc_save = s->pc;
|
|
}
|
|
|
|
static int cur_insn_len(DisasContext *s)
|
|
{
|
|
return s->pc - s->base.pc_next;
|
|
}
|
|
|
|
static TCGv_i32 cur_insn_len_i32(DisasContext *s)
|
|
{
|
|
return tcg_constant_i32(cur_insn_len(s));
|
|
}
|
|
|
|
static TCGv_i32 eip_next_i32(DisasContext *s)
|
|
{
|
|
assert(s->pc_save != -1);
|
|
/*
|
|
* This function has two users: lcall_real (always 16-bit mode), and
|
|
* iret_protected (16, 32, or 64-bit mode). IRET only uses the value
|
|
* when EFLAGS.NT is set, which is illegal in 64-bit mode, which is
|
|
* why passing a 32-bit value isn't broken. To avoid using this where
|
|
* we shouldn't, return -1 in 64-bit mode so that execution goes into
|
|
* the weeds quickly.
|
|
*/
|
|
if (CODE64(s)) {
|
|
return tcg_constant_i32(-1);
|
|
}
|
|
if (TARGET_TB_PCREL) {
|
|
TCGv_i32 ret = tcg_temp_new_i32();
|
|
tcg_gen_trunc_tl_i32(ret, cpu_eip);
|
|
tcg_gen_addi_i32(ret, ret, s->pc - s->pc_save);
|
|
return ret;
|
|
} else {
|
|
return tcg_constant_i32(s->pc - s->cs_base);
|
|
}
|
|
}
|
|
|
|
static TCGv eip_next_tl(DisasContext *s)
|
|
{
|
|
assert(s->pc_save != -1);
|
|
if (TARGET_TB_PCREL) {
|
|
TCGv ret = tcg_temp_new();
|
|
tcg_gen_addi_tl(ret, cpu_eip, s->pc - s->pc_save);
|
|
return ret;
|
|
} else {
|
|
return tcg_constant_tl(s->pc - s->cs_base);
|
|
}
|
|
}
|
|
|
|
static TCGv eip_cur_tl(DisasContext *s)
|
|
{
|
|
assert(s->pc_save != -1);
|
|
if (TARGET_TB_PCREL) {
|
|
TCGv ret = tcg_temp_new();
|
|
tcg_gen_addi_tl(ret, cpu_eip, s->base.pc_next - s->pc_save);
|
|
return ret;
|
|
} else {
|
|
return tcg_constant_tl(s->base.pc_next - s->cs_base);
|
|
}
|
|
}
|
|
|
|
/* Compute SEG:REG into A0. SEG is selected from the override segment
|
|
(OVR_SEG) and the default segment (DEF_SEG). OVR_SEG may be -1 to
|
|
indicate no override. */
|
|
static void gen_lea_v_seg(DisasContext *s, MemOp aflag, TCGv a0,
|
|
int def_seg, int ovr_seg)
|
|
{
|
|
switch (aflag) {
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
if (ovr_seg < 0) {
|
|
tcg_gen_mov_tl(s->A0, a0);
|
|
return;
|
|
}
|
|
break;
|
|
#endif
|
|
case MO_32:
|
|
/* 32 bit address */
|
|
if (ovr_seg < 0 && ADDSEG(s)) {
|
|
ovr_seg = def_seg;
|
|
}
|
|
if (ovr_seg < 0) {
|
|
tcg_gen_ext32u_tl(s->A0, a0);
|
|
return;
|
|
}
|
|
break;
|
|
case MO_16:
|
|
/* 16 bit address */
|
|
tcg_gen_ext16u_tl(s->A0, a0);
|
|
a0 = s->A0;
|
|
if (ovr_seg < 0) {
|
|
if (ADDSEG(s)) {
|
|
ovr_seg = def_seg;
|
|
} else {
|
|
return;
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
|
|
if (ovr_seg >= 0) {
|
|
TCGv seg = cpu_seg_base[ovr_seg];
|
|
|
|
if (aflag == MO_64) {
|
|
tcg_gen_add_tl(s->A0, a0, seg);
|
|
} else if (CODE64(s)) {
|
|
tcg_gen_ext32u_tl(s->A0, a0);
|
|
tcg_gen_add_tl(s->A0, s->A0, seg);
|
|
} else {
|
|
tcg_gen_add_tl(s->A0, a0, seg);
|
|
tcg_gen_ext32u_tl(s->A0, s->A0);
|
|
}
|
|
}
|
|
}
|
|
|
|
static inline void gen_string_movl_A0_ESI(DisasContext *s)
|
|
{
|
|
gen_lea_v_seg(s, s->aflag, cpu_regs[R_ESI], R_DS, s->override);
|
|
}
|
|
|
|
static inline void gen_string_movl_A0_EDI(DisasContext *s)
|
|
{
|
|
gen_lea_v_seg(s, s->aflag, cpu_regs[R_EDI], R_ES, -1);
|
|
}
|
|
|
|
static inline void gen_op_movl_T0_Dshift(DisasContext *s, MemOp ot)
|
|
{
|
|
tcg_gen_ld32s_tl(s->T0, cpu_env, offsetof(CPUX86State, df));
|
|
tcg_gen_shli_tl(s->T0, s->T0, ot);
|
|
};
|
|
|
|
static TCGv gen_ext_tl(TCGv dst, TCGv src, MemOp size, bool sign)
|
|
{
|
|
switch (size) {
|
|
case MO_8:
|
|
if (sign) {
|
|
tcg_gen_ext8s_tl(dst, src);
|
|
} else {
|
|
tcg_gen_ext8u_tl(dst, src);
|
|
}
|
|
return dst;
|
|
case MO_16:
|
|
if (sign) {
|
|
tcg_gen_ext16s_tl(dst, src);
|
|
} else {
|
|
tcg_gen_ext16u_tl(dst, src);
|
|
}
|
|
return dst;
|
|
#ifdef TARGET_X86_64
|
|
case MO_32:
|
|
if (sign) {
|
|
tcg_gen_ext32s_tl(dst, src);
|
|
} else {
|
|
tcg_gen_ext32u_tl(dst, src);
|
|
}
|
|
return dst;
|
|
#endif
|
|
default:
|
|
return src;
|
|
}
|
|
}
|
|
|
|
static void gen_extu(MemOp ot, TCGv reg)
|
|
{
|
|
gen_ext_tl(reg, reg, ot, false);
|
|
}
|
|
|
|
static void gen_exts(MemOp ot, TCGv reg)
|
|
{
|
|
gen_ext_tl(reg, reg, ot, true);
|
|
}
|
|
|
|
static void gen_op_j_ecx(DisasContext *s, TCGCond cond, TCGLabel *label1)
|
|
{
|
|
tcg_gen_mov_tl(s->tmp0, cpu_regs[R_ECX]);
|
|
gen_extu(s->aflag, s->tmp0);
|
|
tcg_gen_brcondi_tl(cond, s->tmp0, 0, label1);
|
|
}
|
|
|
|
static inline void gen_op_jz_ecx(DisasContext *s, TCGLabel *label1)
|
|
{
|
|
gen_op_j_ecx(s, TCG_COND_EQ, label1);
|
|
}
|
|
|
|
static inline void gen_op_jnz_ecx(DisasContext *s, TCGLabel *label1)
|
|
{
|
|
gen_op_j_ecx(s, TCG_COND_NE, label1);
|
|
}
|
|
|
|
static void gen_helper_in_func(MemOp ot, TCGv v, TCGv_i32 n)
|
|
{
|
|
switch (ot) {
|
|
case MO_8:
|
|
gen_helper_inb(v, cpu_env, n);
|
|
break;
|
|
case MO_16:
|
|
gen_helper_inw(v, cpu_env, n);
|
|
break;
|
|
case MO_32:
|
|
gen_helper_inl(v, cpu_env, n);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
}
|
|
|
|
static void gen_helper_out_func(MemOp ot, TCGv_i32 v, TCGv_i32 n)
|
|
{
|
|
switch (ot) {
|
|
case MO_8:
|
|
gen_helper_outb(cpu_env, v, n);
|
|
break;
|
|
case MO_16:
|
|
gen_helper_outw(cpu_env, v, n);
|
|
break;
|
|
case MO_32:
|
|
gen_helper_outl(cpu_env, v, n);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Validate that access to [port, port + 1<<ot) is allowed.
|
|
* Raise #GP, or VMM exit if not.
|
|
*/
|
|
static bool gen_check_io(DisasContext *s, MemOp ot, TCGv_i32 port,
|
|
uint32_t svm_flags)
|
|
{
|
|
#ifdef CONFIG_USER_ONLY
|
|
/*
|
|
* We do not implement the ioperm(2) syscall, so the TSS check
|
|
* will always fail.
|
|
*/
|
|
gen_exception_gpf(s);
|
|
return false;
|
|
#else
|
|
if (PE(s) && (CPL(s) > IOPL(s) || VM86(s))) {
|
|
gen_helper_check_io(cpu_env, port, tcg_constant_i32(1 << ot));
|
|
}
|
|
if (GUEST(s)) {
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
if (s->prefix & (PREFIX_REPZ | PREFIX_REPNZ)) {
|
|
svm_flags |= SVM_IOIO_REP_MASK;
|
|
}
|
|
svm_flags |= 1 << (SVM_IOIO_SIZE_SHIFT + ot);
|
|
gen_helper_svm_check_io(cpu_env, port,
|
|
tcg_constant_i32(svm_flags),
|
|
cur_insn_len_i32(s));
|
|
}
|
|
return true;
|
|
#endif
|
|
}
|
|
|
|
static void gen_movs(DisasContext *s, MemOp ot)
|
|
{
|
|
gen_string_movl_A0_ESI(s);
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
gen_string_movl_A0_EDI(s);
|
|
gen_op_st_v(s, ot, s->T0, s->A0);
|
|
gen_op_movl_T0_Dshift(s, ot);
|
|
gen_op_add_reg_T0(s, s->aflag, R_ESI);
|
|
gen_op_add_reg_T0(s, s->aflag, R_EDI);
|
|
}
|
|
|
|
static void gen_op_update1_cc(DisasContext *s)
|
|
{
|
|
tcg_gen_mov_tl(cpu_cc_dst, s->T0);
|
|
}
|
|
|
|
static void gen_op_update2_cc(DisasContext *s)
|
|
{
|
|
tcg_gen_mov_tl(cpu_cc_src, s->T1);
|
|
tcg_gen_mov_tl(cpu_cc_dst, s->T0);
|
|
}
|
|
|
|
static void gen_op_update3_cc(DisasContext *s, TCGv reg)
|
|
{
|
|
tcg_gen_mov_tl(cpu_cc_src2, reg);
|
|
tcg_gen_mov_tl(cpu_cc_src, s->T1);
|
|
tcg_gen_mov_tl(cpu_cc_dst, s->T0);
|
|
}
|
|
|
|
static inline void gen_op_testl_T0_T1_cc(DisasContext *s)
|
|
{
|
|
tcg_gen_and_tl(cpu_cc_dst, s->T0, s->T1);
|
|
}
|
|
|
|
static void gen_op_update_neg_cc(DisasContext *s)
|
|
{
|
|
tcg_gen_mov_tl(cpu_cc_dst, s->T0);
|
|
tcg_gen_neg_tl(cpu_cc_src, s->T0);
|
|
tcg_gen_movi_tl(s->cc_srcT, 0);
|
|
}
|
|
|
|
/* compute all eflags to cc_src */
|
|
static void gen_compute_eflags(DisasContext *s)
|
|
{
|
|
TCGv zero, dst, src1, src2;
|
|
int live, dead;
|
|
|
|
if (s->cc_op == CC_OP_EFLAGS) {
|
|
return;
|
|
}
|
|
if (s->cc_op == CC_OP_CLR) {
|
|
tcg_gen_movi_tl(cpu_cc_src, CC_Z | CC_P);
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
return;
|
|
}
|
|
|
|
zero = NULL;
|
|
dst = cpu_cc_dst;
|
|
src1 = cpu_cc_src;
|
|
src2 = cpu_cc_src2;
|
|
|
|
/* Take care to not read values that are not live. */
|
|
live = cc_op_live[s->cc_op] & ~USES_CC_SRCT;
|
|
dead = live ^ (USES_CC_DST | USES_CC_SRC | USES_CC_SRC2);
|
|
if (dead) {
|
|
zero = tcg_const_tl(0);
|
|
if (dead & USES_CC_DST) {
|
|
dst = zero;
|
|
}
|
|
if (dead & USES_CC_SRC) {
|
|
src1 = zero;
|
|
}
|
|
if (dead & USES_CC_SRC2) {
|
|
src2 = zero;
|
|
}
|
|
}
|
|
|
|
gen_update_cc_op(s);
|
|
gen_helper_cc_compute_all(cpu_cc_src, dst, src1, src2, cpu_cc_op);
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
|
|
if (dead) {
|
|
tcg_temp_free(zero);
|
|
}
|
|
}
|
|
|
|
typedef struct CCPrepare {
|
|
TCGCond cond;
|
|
TCGv reg;
|
|
TCGv reg2;
|
|
target_ulong imm;
|
|
target_ulong mask;
|
|
bool use_reg2;
|
|
bool no_setcond;
|
|
} CCPrepare;
|
|
|
|
/* compute eflags.C to reg */
|
|
static CCPrepare gen_prepare_eflags_c(DisasContext *s, TCGv reg)
|
|
{
|
|
TCGv t0, t1;
|
|
int size, shift;
|
|
|
|
switch (s->cc_op) {
|
|
case CC_OP_SUBB ... CC_OP_SUBQ:
|
|
/* (DATA_TYPE)CC_SRCT < (DATA_TYPE)CC_SRC */
|
|
size = s->cc_op - CC_OP_SUBB;
|
|
t1 = gen_ext_tl(s->tmp0, cpu_cc_src, size, false);
|
|
/* If no temporary was used, be careful not to alias t1 and t0. */
|
|
t0 = t1 == cpu_cc_src ? s->tmp0 : reg;
|
|
tcg_gen_mov_tl(t0, s->cc_srcT);
|
|
gen_extu(size, t0);
|
|
goto add_sub;
|
|
|
|
case CC_OP_ADDB ... CC_OP_ADDQ:
|
|
/* (DATA_TYPE)CC_DST < (DATA_TYPE)CC_SRC */
|
|
size = s->cc_op - CC_OP_ADDB;
|
|
t1 = gen_ext_tl(s->tmp0, cpu_cc_src, size, false);
|
|
t0 = gen_ext_tl(reg, cpu_cc_dst, size, false);
|
|
add_sub:
|
|
return (CCPrepare) { .cond = TCG_COND_LTU, .reg = t0,
|
|
.reg2 = t1, .mask = -1, .use_reg2 = true };
|
|
|
|
case CC_OP_LOGICB ... CC_OP_LOGICQ:
|
|
case CC_OP_CLR:
|
|
case CC_OP_POPCNT:
|
|
return (CCPrepare) { .cond = TCG_COND_NEVER, .mask = -1 };
|
|
|
|
case CC_OP_INCB ... CC_OP_INCQ:
|
|
case CC_OP_DECB ... CC_OP_DECQ:
|
|
return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
|
|
.mask = -1, .no_setcond = true };
|
|
|
|
case CC_OP_SHLB ... CC_OP_SHLQ:
|
|
/* (CC_SRC >> (DATA_BITS - 1)) & 1 */
|
|
size = s->cc_op - CC_OP_SHLB;
|
|
shift = (8 << size) - 1;
|
|
return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
|
|
.mask = (target_ulong)1 << shift };
|
|
|
|
case CC_OP_MULB ... CC_OP_MULQ:
|
|
return (CCPrepare) { .cond = TCG_COND_NE,
|
|
.reg = cpu_cc_src, .mask = -1 };
|
|
|
|
case CC_OP_BMILGB ... CC_OP_BMILGQ:
|
|
size = s->cc_op - CC_OP_BMILGB;
|
|
t0 = gen_ext_tl(reg, cpu_cc_src, size, false);
|
|
return (CCPrepare) { .cond = TCG_COND_EQ, .reg = t0, .mask = -1 };
|
|
|
|
case CC_OP_ADCX:
|
|
case CC_OP_ADCOX:
|
|
return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_dst,
|
|
.mask = -1, .no_setcond = true };
|
|
|
|
case CC_OP_EFLAGS:
|
|
case CC_OP_SARB ... CC_OP_SARQ:
|
|
/* CC_SRC & 1 */
|
|
return (CCPrepare) { .cond = TCG_COND_NE,
|
|
.reg = cpu_cc_src, .mask = CC_C };
|
|
|
|
default:
|
|
/* The need to compute only C from CC_OP_DYNAMIC is important
|
|
in efficiently implementing e.g. INC at the start of a TB. */
|
|
gen_update_cc_op(s);
|
|
gen_helper_cc_compute_c(reg, cpu_cc_dst, cpu_cc_src,
|
|
cpu_cc_src2, cpu_cc_op);
|
|
return (CCPrepare) { .cond = TCG_COND_NE, .reg = reg,
|
|
.mask = -1, .no_setcond = true };
|
|
}
|
|
}
|
|
|
|
/* compute eflags.P to reg */
|
|
static CCPrepare gen_prepare_eflags_p(DisasContext *s, TCGv reg)
|
|
{
|
|
gen_compute_eflags(s);
|
|
return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
|
|
.mask = CC_P };
|
|
}
|
|
|
|
/* compute eflags.S to reg */
|
|
static CCPrepare gen_prepare_eflags_s(DisasContext *s, TCGv reg)
|
|
{
|
|
switch (s->cc_op) {
|
|
case CC_OP_DYNAMIC:
|
|
gen_compute_eflags(s);
|
|
/* FALLTHRU */
|
|
case CC_OP_EFLAGS:
|
|
case CC_OP_ADCX:
|
|
case CC_OP_ADOX:
|
|
case CC_OP_ADCOX:
|
|
return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
|
|
.mask = CC_S };
|
|
case CC_OP_CLR:
|
|
case CC_OP_POPCNT:
|
|
return (CCPrepare) { .cond = TCG_COND_NEVER, .mask = -1 };
|
|
default:
|
|
{
|
|
MemOp size = (s->cc_op - CC_OP_ADDB) & 3;
|
|
TCGv t0 = gen_ext_tl(reg, cpu_cc_dst, size, true);
|
|
return (CCPrepare) { .cond = TCG_COND_LT, .reg = t0, .mask = -1 };
|
|
}
|
|
}
|
|
}
|
|
|
|
/* compute eflags.O to reg */
|
|
static CCPrepare gen_prepare_eflags_o(DisasContext *s, TCGv reg)
|
|
{
|
|
switch (s->cc_op) {
|
|
case CC_OP_ADOX:
|
|
case CC_OP_ADCOX:
|
|
return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src2,
|
|
.mask = -1, .no_setcond = true };
|
|
case CC_OP_CLR:
|
|
case CC_OP_POPCNT:
|
|
return (CCPrepare) { .cond = TCG_COND_NEVER, .mask = -1 };
|
|
default:
|
|
gen_compute_eflags(s);
|
|
return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
|
|
.mask = CC_O };
|
|
}
|
|
}
|
|
|
|
/* compute eflags.Z to reg */
|
|
static CCPrepare gen_prepare_eflags_z(DisasContext *s, TCGv reg)
|
|
{
|
|
switch (s->cc_op) {
|
|
case CC_OP_DYNAMIC:
|
|
gen_compute_eflags(s);
|
|
/* FALLTHRU */
|
|
case CC_OP_EFLAGS:
|
|
case CC_OP_ADCX:
|
|
case CC_OP_ADOX:
|
|
case CC_OP_ADCOX:
|
|
return (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
|
|
.mask = CC_Z };
|
|
case CC_OP_CLR:
|
|
return (CCPrepare) { .cond = TCG_COND_ALWAYS, .mask = -1 };
|
|
case CC_OP_POPCNT:
|
|
return (CCPrepare) { .cond = TCG_COND_EQ, .reg = cpu_cc_src,
|
|
.mask = -1 };
|
|
default:
|
|
{
|
|
MemOp size = (s->cc_op - CC_OP_ADDB) & 3;
|
|
TCGv t0 = gen_ext_tl(reg, cpu_cc_dst, size, false);
|
|
return (CCPrepare) { .cond = TCG_COND_EQ, .reg = t0, .mask = -1 };
|
|
}
|
|
}
|
|
}
|
|
|
|
/* perform a conditional store into register 'reg' according to jump opcode
|
|
value 'b'. In the fast case, T0 is guaranted not to be used. */
|
|
static CCPrepare gen_prepare_cc(DisasContext *s, int b, TCGv reg)
|
|
{
|
|
int inv, jcc_op, cond;
|
|
MemOp size;
|
|
CCPrepare cc;
|
|
TCGv t0;
|
|
|
|
inv = b & 1;
|
|
jcc_op = (b >> 1) & 7;
|
|
|
|
switch (s->cc_op) {
|
|
case CC_OP_SUBB ... CC_OP_SUBQ:
|
|
/* We optimize relational operators for the cmp/jcc case. */
|
|
size = s->cc_op - CC_OP_SUBB;
|
|
switch (jcc_op) {
|
|
case JCC_BE:
|
|
tcg_gen_mov_tl(s->tmp4, s->cc_srcT);
|
|
gen_extu(size, s->tmp4);
|
|
t0 = gen_ext_tl(s->tmp0, cpu_cc_src, size, false);
|
|
cc = (CCPrepare) { .cond = TCG_COND_LEU, .reg = s->tmp4,
|
|
.reg2 = t0, .mask = -1, .use_reg2 = true };
|
|
break;
|
|
|
|
case JCC_L:
|
|
cond = TCG_COND_LT;
|
|
goto fast_jcc_l;
|
|
case JCC_LE:
|
|
cond = TCG_COND_LE;
|
|
fast_jcc_l:
|
|
tcg_gen_mov_tl(s->tmp4, s->cc_srcT);
|
|
gen_exts(size, s->tmp4);
|
|
t0 = gen_ext_tl(s->tmp0, cpu_cc_src, size, true);
|
|
cc = (CCPrepare) { .cond = cond, .reg = s->tmp4,
|
|
.reg2 = t0, .mask = -1, .use_reg2 = true };
|
|
break;
|
|
|
|
default:
|
|
goto slow_jcc;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
slow_jcc:
|
|
/* This actually generates good code for JC, JZ and JS. */
|
|
switch (jcc_op) {
|
|
case JCC_O:
|
|
cc = gen_prepare_eflags_o(s, reg);
|
|
break;
|
|
case JCC_B:
|
|
cc = gen_prepare_eflags_c(s, reg);
|
|
break;
|
|
case JCC_Z:
|
|
cc = gen_prepare_eflags_z(s, reg);
|
|
break;
|
|
case JCC_BE:
|
|
gen_compute_eflags(s);
|
|
cc = (CCPrepare) { .cond = TCG_COND_NE, .reg = cpu_cc_src,
|
|
.mask = CC_Z | CC_C };
|
|
break;
|
|
case JCC_S:
|
|
cc = gen_prepare_eflags_s(s, reg);
|
|
break;
|
|
case JCC_P:
|
|
cc = gen_prepare_eflags_p(s, reg);
|
|
break;
|
|
case JCC_L:
|
|
gen_compute_eflags(s);
|
|
if (reg == cpu_cc_src) {
|
|
reg = s->tmp0;
|
|
}
|
|
tcg_gen_shri_tl(reg, cpu_cc_src, 4); /* CC_O -> CC_S */
|
|
tcg_gen_xor_tl(reg, reg, cpu_cc_src);
|
|
cc = (CCPrepare) { .cond = TCG_COND_NE, .reg = reg,
|
|
.mask = CC_S };
|
|
break;
|
|
default:
|
|
case JCC_LE:
|
|
gen_compute_eflags(s);
|
|
if (reg == cpu_cc_src) {
|
|
reg = s->tmp0;
|
|
}
|
|
tcg_gen_shri_tl(reg, cpu_cc_src, 4); /* CC_O -> CC_S */
|
|
tcg_gen_xor_tl(reg, reg, cpu_cc_src);
|
|
cc = (CCPrepare) { .cond = TCG_COND_NE, .reg = reg,
|
|
.mask = CC_S | CC_Z };
|
|
break;
|
|
}
|
|
break;
|
|
}
|
|
|
|
if (inv) {
|
|
cc.cond = tcg_invert_cond(cc.cond);
|
|
}
|
|
return cc;
|
|
}
|
|
|
|
static void gen_setcc1(DisasContext *s, int b, TCGv reg)
|
|
{
|
|
CCPrepare cc = gen_prepare_cc(s, b, reg);
|
|
|
|
if (cc.no_setcond) {
|
|
if (cc.cond == TCG_COND_EQ) {
|
|
tcg_gen_xori_tl(reg, cc.reg, 1);
|
|
} else {
|
|
tcg_gen_mov_tl(reg, cc.reg);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (cc.cond == TCG_COND_NE && !cc.use_reg2 && cc.imm == 0 &&
|
|
cc.mask != 0 && (cc.mask & (cc.mask - 1)) == 0) {
|
|
tcg_gen_shri_tl(reg, cc.reg, ctztl(cc.mask));
|
|
tcg_gen_andi_tl(reg, reg, 1);
|
|
return;
|
|
}
|
|
if (cc.mask != -1) {
|
|
tcg_gen_andi_tl(reg, cc.reg, cc.mask);
|
|
cc.reg = reg;
|
|
}
|
|
if (cc.use_reg2) {
|
|
tcg_gen_setcond_tl(cc.cond, reg, cc.reg, cc.reg2);
|
|
} else {
|
|
tcg_gen_setcondi_tl(cc.cond, reg, cc.reg, cc.imm);
|
|
}
|
|
}
|
|
|
|
static inline void gen_compute_eflags_c(DisasContext *s, TCGv reg)
|
|
{
|
|
gen_setcc1(s, JCC_B << 1, reg);
|
|
}
|
|
|
|
/* generate a conditional jump to label 'l1' according to jump opcode
|
|
value 'b'. In the fast case, T0 is guaranted not to be used. */
|
|
static inline void gen_jcc1_noeob(DisasContext *s, int b, TCGLabel *l1)
|
|
{
|
|
CCPrepare cc = gen_prepare_cc(s, b, s->T0);
|
|
|
|
if (cc.mask != -1) {
|
|
tcg_gen_andi_tl(s->T0, cc.reg, cc.mask);
|
|
cc.reg = s->T0;
|
|
}
|
|
if (cc.use_reg2) {
|
|
tcg_gen_brcond_tl(cc.cond, cc.reg, cc.reg2, l1);
|
|
} else {
|
|
tcg_gen_brcondi_tl(cc.cond, cc.reg, cc.imm, l1);
|
|
}
|
|
}
|
|
|
|
/* Generate a conditional jump to label 'l1' according to jump opcode
|
|
value 'b'. In the fast case, T0 is guaranted not to be used.
|
|
A translation block must end soon. */
|
|
static inline void gen_jcc1(DisasContext *s, int b, TCGLabel *l1)
|
|
{
|
|
CCPrepare cc = gen_prepare_cc(s, b, s->T0);
|
|
|
|
gen_update_cc_op(s);
|
|
if (cc.mask != -1) {
|
|
tcg_gen_andi_tl(s->T0, cc.reg, cc.mask);
|
|
cc.reg = s->T0;
|
|
}
|
|
set_cc_op(s, CC_OP_DYNAMIC);
|
|
if (cc.use_reg2) {
|
|
tcg_gen_brcond_tl(cc.cond, cc.reg, cc.reg2, l1);
|
|
} else {
|
|
tcg_gen_brcondi_tl(cc.cond, cc.reg, cc.imm, l1);
|
|
}
|
|
}
|
|
|
|
/* XXX: does not work with gdbstub "ice" single step - not a
|
|
serious problem */
|
|
static TCGLabel *gen_jz_ecx_string(DisasContext *s)
|
|
{
|
|
TCGLabel *l1 = gen_new_label();
|
|
TCGLabel *l2 = gen_new_label();
|
|
gen_op_jnz_ecx(s, l1);
|
|
gen_set_label(l2);
|
|
gen_jmp_rel_csize(s, 0, 1);
|
|
gen_set_label(l1);
|
|
return l2;
|
|
}
|
|
|
|
static void gen_stos(DisasContext *s, MemOp ot)
|
|
{
|
|
gen_op_mov_v_reg(s, MO_32, s->T0, R_EAX);
|
|
gen_string_movl_A0_EDI(s);
|
|
gen_op_st_v(s, ot, s->T0, s->A0);
|
|
gen_op_movl_T0_Dshift(s, ot);
|
|
gen_op_add_reg_T0(s, s->aflag, R_EDI);
|
|
}
|
|
|
|
static void gen_lods(DisasContext *s, MemOp ot)
|
|
{
|
|
gen_string_movl_A0_ESI(s);
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
gen_op_mov_reg_v(s, ot, R_EAX, s->T0);
|
|
gen_op_movl_T0_Dshift(s, ot);
|
|
gen_op_add_reg_T0(s, s->aflag, R_ESI);
|
|
}
|
|
|
|
static void gen_scas(DisasContext *s, MemOp ot)
|
|
{
|
|
gen_string_movl_A0_EDI(s);
|
|
gen_op_ld_v(s, ot, s->T1, s->A0);
|
|
gen_op(s, OP_CMPL, ot, R_EAX);
|
|
gen_op_movl_T0_Dshift(s, ot);
|
|
gen_op_add_reg_T0(s, s->aflag, R_EDI);
|
|
}
|
|
|
|
static void gen_cmps(DisasContext *s, MemOp ot)
|
|
{
|
|
gen_string_movl_A0_EDI(s);
|
|
gen_op_ld_v(s, ot, s->T1, s->A0);
|
|
gen_string_movl_A0_ESI(s);
|
|
gen_op(s, OP_CMPL, ot, OR_TMP0);
|
|
gen_op_movl_T0_Dshift(s, ot);
|
|
gen_op_add_reg_T0(s, s->aflag, R_ESI);
|
|
gen_op_add_reg_T0(s, s->aflag, R_EDI);
|
|
}
|
|
|
|
static void gen_bpt_io(DisasContext *s, TCGv_i32 t_port, int ot)
|
|
{
|
|
if (s->flags & HF_IOBPT_MASK) {
|
|
#ifdef CONFIG_USER_ONLY
|
|
/* user-mode cpu should not be in IOBPT mode */
|
|
g_assert_not_reached();
|
|
#else
|
|
TCGv_i32 t_size = tcg_constant_i32(1 << ot);
|
|
TCGv t_next = eip_next_tl(s);
|
|
gen_helper_bpt_io(cpu_env, t_port, t_size, t_next);
|
|
#endif /* CONFIG_USER_ONLY */
|
|
}
|
|
}
|
|
|
|
static void gen_ins(DisasContext *s, MemOp ot)
|
|
{
|
|
gen_string_movl_A0_EDI(s);
|
|
/* Note: we must do this dummy write first to be restartable in
|
|
case of page fault. */
|
|
tcg_gen_movi_tl(s->T0, 0);
|
|
gen_op_st_v(s, ot, s->T0, s->A0);
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, cpu_regs[R_EDX]);
|
|
tcg_gen_andi_i32(s->tmp2_i32, s->tmp2_i32, 0xffff);
|
|
gen_helper_in_func(ot, s->T0, s->tmp2_i32);
|
|
gen_op_st_v(s, ot, s->T0, s->A0);
|
|
gen_op_movl_T0_Dshift(s, ot);
|
|
gen_op_add_reg_T0(s, s->aflag, R_EDI);
|
|
gen_bpt_io(s, s->tmp2_i32, ot);
|
|
}
|
|
|
|
static void gen_outs(DisasContext *s, MemOp ot)
|
|
{
|
|
gen_string_movl_A0_ESI(s);
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, cpu_regs[R_EDX]);
|
|
tcg_gen_andi_i32(s->tmp2_i32, s->tmp2_i32, 0xffff);
|
|
tcg_gen_trunc_tl_i32(s->tmp3_i32, s->T0);
|
|
gen_helper_out_func(ot, s->tmp2_i32, s->tmp3_i32);
|
|
gen_op_movl_T0_Dshift(s, ot);
|
|
gen_op_add_reg_T0(s, s->aflag, R_ESI);
|
|
gen_bpt_io(s, s->tmp2_i32, ot);
|
|
}
|
|
|
|
/* Generate jumps to current or next instruction */
|
|
static void gen_repz(DisasContext *s, MemOp ot,
|
|
void (*fn)(DisasContext *s, MemOp ot))
|
|
{
|
|
TCGLabel *l2;
|
|
gen_update_cc_op(s);
|
|
l2 = gen_jz_ecx_string(s);
|
|
fn(s, ot);
|
|
gen_op_add_reg_im(s, s->aflag, R_ECX, -1);
|
|
/*
|
|
* A loop would cause two single step exceptions if ECX = 1
|
|
* before rep string_insn
|
|
*/
|
|
if (s->repz_opt) {
|
|
gen_op_jz_ecx(s, l2);
|
|
}
|
|
gen_jmp_rel_csize(s, -cur_insn_len(s), 0);
|
|
}
|
|
|
|
#define GEN_REPZ(op) \
|
|
static inline void gen_repz_ ## op(DisasContext *s, MemOp ot) \
|
|
{ gen_repz(s, ot, gen_##op); }
|
|
|
|
static void gen_repz2(DisasContext *s, MemOp ot, int nz,
|
|
void (*fn)(DisasContext *s, MemOp ot))
|
|
{
|
|
TCGLabel *l2;
|
|
gen_update_cc_op(s);
|
|
l2 = gen_jz_ecx_string(s);
|
|
fn(s, ot);
|
|
gen_op_add_reg_im(s, s->aflag, R_ECX, -1);
|
|
gen_update_cc_op(s);
|
|
gen_jcc1(s, (JCC_Z << 1) | (nz ^ 1), l2);
|
|
if (s->repz_opt) {
|
|
gen_op_jz_ecx(s, l2);
|
|
}
|
|
gen_jmp_rel_csize(s, -cur_insn_len(s), 0);
|
|
}
|
|
|
|
#define GEN_REPZ2(op) \
|
|
static inline void gen_repz_ ## op(DisasContext *s, MemOp ot, int nz) \
|
|
{ gen_repz2(s, ot, nz, gen_##op); }
|
|
|
|
GEN_REPZ(movs)
|
|
GEN_REPZ(stos)
|
|
GEN_REPZ(lods)
|
|
GEN_REPZ(ins)
|
|
GEN_REPZ(outs)
|
|
GEN_REPZ2(scas)
|
|
GEN_REPZ2(cmps)
|
|
|
|
static void gen_helper_fp_arith_ST0_FT0(int op)
|
|
{
|
|
switch (op) {
|
|
case 0:
|
|
gen_helper_fadd_ST0_FT0(cpu_env);
|
|
break;
|
|
case 1:
|
|
gen_helper_fmul_ST0_FT0(cpu_env);
|
|
break;
|
|
case 2:
|
|
gen_helper_fcom_ST0_FT0(cpu_env);
|
|
break;
|
|
case 3:
|
|
gen_helper_fcom_ST0_FT0(cpu_env);
|
|
break;
|
|
case 4:
|
|
gen_helper_fsub_ST0_FT0(cpu_env);
|
|
break;
|
|
case 5:
|
|
gen_helper_fsubr_ST0_FT0(cpu_env);
|
|
break;
|
|
case 6:
|
|
gen_helper_fdiv_ST0_FT0(cpu_env);
|
|
break;
|
|
case 7:
|
|
gen_helper_fdivr_ST0_FT0(cpu_env);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* NOTE the exception in "r" op ordering */
|
|
static void gen_helper_fp_arith_STN_ST0(int op, int opreg)
|
|
{
|
|
TCGv_i32 tmp = tcg_const_i32(opreg);
|
|
switch (op) {
|
|
case 0:
|
|
gen_helper_fadd_STN_ST0(cpu_env, tmp);
|
|
break;
|
|
case 1:
|
|
gen_helper_fmul_STN_ST0(cpu_env, tmp);
|
|
break;
|
|
case 4:
|
|
gen_helper_fsubr_STN_ST0(cpu_env, tmp);
|
|
break;
|
|
case 5:
|
|
gen_helper_fsub_STN_ST0(cpu_env, tmp);
|
|
break;
|
|
case 6:
|
|
gen_helper_fdivr_STN_ST0(cpu_env, tmp);
|
|
break;
|
|
case 7:
|
|
gen_helper_fdiv_STN_ST0(cpu_env, tmp);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void gen_exception(DisasContext *s, int trapno)
|
|
{
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_raise_exception(cpu_env, tcg_const_i32(trapno));
|
|
s->base.is_jmp = DISAS_NORETURN;
|
|
}
|
|
|
|
/* Generate #UD for the current instruction. The assumption here is that
|
|
the instruction is known, but it isn't allowed in the current cpu mode. */
|
|
static void gen_illegal_opcode(DisasContext *s)
|
|
{
|
|
gen_exception(s, EXCP06_ILLOP);
|
|
}
|
|
|
|
/* Generate #GP for the current instruction. */
|
|
static void gen_exception_gpf(DisasContext *s)
|
|
{
|
|
gen_exception(s, EXCP0D_GPF);
|
|
}
|
|
|
|
/* Check for cpl == 0; if not, raise #GP and return false. */
|
|
static bool check_cpl0(DisasContext *s)
|
|
{
|
|
if (CPL(s) == 0) {
|
|
return true;
|
|
}
|
|
gen_exception_gpf(s);
|
|
return false;
|
|
}
|
|
|
|
/* If vm86, check for iopl == 3; if not, raise #GP and return false. */
|
|
static bool check_vm86_iopl(DisasContext *s)
|
|
{
|
|
if (!VM86(s) || IOPL(s) == 3) {
|
|
return true;
|
|
}
|
|
gen_exception_gpf(s);
|
|
return false;
|
|
}
|
|
|
|
/* Check for iopl allowing access; if not, raise #GP and return false. */
|
|
static bool check_iopl(DisasContext *s)
|
|
{
|
|
if (VM86(s) ? IOPL(s) == 3 : CPL(s) <= IOPL(s)) {
|
|
return true;
|
|
}
|
|
gen_exception_gpf(s);
|
|
return false;
|
|
}
|
|
|
|
/* if d == OR_TMP0, it means memory operand (address in A0) */
|
|
static void gen_op(DisasContext *s1, int op, MemOp ot, int d)
|
|
{
|
|
if (d != OR_TMP0) {
|
|
if (s1->prefix & PREFIX_LOCK) {
|
|
/* Lock prefix when destination is not memory. */
|
|
gen_illegal_opcode(s1);
|
|
return;
|
|
}
|
|
gen_op_mov_v_reg(s1, ot, s1->T0, d);
|
|
} else if (!(s1->prefix & PREFIX_LOCK)) {
|
|
gen_op_ld_v(s1, ot, s1->T0, s1->A0);
|
|
}
|
|
switch(op) {
|
|
case OP_ADCL:
|
|
gen_compute_eflags_c(s1, s1->tmp4);
|
|
if (s1->prefix & PREFIX_LOCK) {
|
|
tcg_gen_add_tl(s1->T0, s1->tmp4, s1->T1);
|
|
tcg_gen_atomic_add_fetch_tl(s1->T0, s1->A0, s1->T0,
|
|
s1->mem_index, ot | MO_LE);
|
|
} else {
|
|
tcg_gen_add_tl(s1->T0, s1->T0, s1->T1);
|
|
tcg_gen_add_tl(s1->T0, s1->T0, s1->tmp4);
|
|
gen_op_st_rm_T0_A0(s1, ot, d);
|
|
}
|
|
gen_op_update3_cc(s1, s1->tmp4);
|
|
set_cc_op(s1, CC_OP_ADCB + ot);
|
|
break;
|
|
case OP_SBBL:
|
|
gen_compute_eflags_c(s1, s1->tmp4);
|
|
if (s1->prefix & PREFIX_LOCK) {
|
|
tcg_gen_add_tl(s1->T0, s1->T1, s1->tmp4);
|
|
tcg_gen_neg_tl(s1->T0, s1->T0);
|
|
tcg_gen_atomic_add_fetch_tl(s1->T0, s1->A0, s1->T0,
|
|
s1->mem_index, ot | MO_LE);
|
|
} else {
|
|
tcg_gen_sub_tl(s1->T0, s1->T0, s1->T1);
|
|
tcg_gen_sub_tl(s1->T0, s1->T0, s1->tmp4);
|
|
gen_op_st_rm_T0_A0(s1, ot, d);
|
|
}
|
|
gen_op_update3_cc(s1, s1->tmp4);
|
|
set_cc_op(s1, CC_OP_SBBB + ot);
|
|
break;
|
|
case OP_ADDL:
|
|
if (s1->prefix & PREFIX_LOCK) {
|
|
tcg_gen_atomic_add_fetch_tl(s1->T0, s1->A0, s1->T1,
|
|
s1->mem_index, ot | MO_LE);
|
|
} else {
|
|
tcg_gen_add_tl(s1->T0, s1->T0, s1->T1);
|
|
gen_op_st_rm_T0_A0(s1, ot, d);
|
|
}
|
|
gen_op_update2_cc(s1);
|
|
set_cc_op(s1, CC_OP_ADDB + ot);
|
|
break;
|
|
case OP_SUBL:
|
|
if (s1->prefix & PREFIX_LOCK) {
|
|
tcg_gen_neg_tl(s1->T0, s1->T1);
|
|
tcg_gen_atomic_fetch_add_tl(s1->cc_srcT, s1->A0, s1->T0,
|
|
s1->mem_index, ot | MO_LE);
|
|
tcg_gen_sub_tl(s1->T0, s1->cc_srcT, s1->T1);
|
|
} else {
|
|
tcg_gen_mov_tl(s1->cc_srcT, s1->T0);
|
|
tcg_gen_sub_tl(s1->T0, s1->T0, s1->T1);
|
|
gen_op_st_rm_T0_A0(s1, ot, d);
|
|
}
|
|
gen_op_update2_cc(s1);
|
|
set_cc_op(s1, CC_OP_SUBB + ot);
|
|
break;
|
|
default:
|
|
case OP_ANDL:
|
|
if (s1->prefix & PREFIX_LOCK) {
|
|
tcg_gen_atomic_and_fetch_tl(s1->T0, s1->A0, s1->T1,
|
|
s1->mem_index, ot | MO_LE);
|
|
} else {
|
|
tcg_gen_and_tl(s1->T0, s1->T0, s1->T1);
|
|
gen_op_st_rm_T0_A0(s1, ot, d);
|
|
}
|
|
gen_op_update1_cc(s1);
|
|
set_cc_op(s1, CC_OP_LOGICB + ot);
|
|
break;
|
|
case OP_ORL:
|
|
if (s1->prefix & PREFIX_LOCK) {
|
|
tcg_gen_atomic_or_fetch_tl(s1->T0, s1->A0, s1->T1,
|
|
s1->mem_index, ot | MO_LE);
|
|
} else {
|
|
tcg_gen_or_tl(s1->T0, s1->T0, s1->T1);
|
|
gen_op_st_rm_T0_A0(s1, ot, d);
|
|
}
|
|
gen_op_update1_cc(s1);
|
|
set_cc_op(s1, CC_OP_LOGICB + ot);
|
|
break;
|
|
case OP_XORL:
|
|
if (s1->prefix & PREFIX_LOCK) {
|
|
tcg_gen_atomic_xor_fetch_tl(s1->T0, s1->A0, s1->T1,
|
|
s1->mem_index, ot | MO_LE);
|
|
} else {
|
|
tcg_gen_xor_tl(s1->T0, s1->T0, s1->T1);
|
|
gen_op_st_rm_T0_A0(s1, ot, d);
|
|
}
|
|
gen_op_update1_cc(s1);
|
|
set_cc_op(s1, CC_OP_LOGICB + ot);
|
|
break;
|
|
case OP_CMPL:
|
|
tcg_gen_mov_tl(cpu_cc_src, s1->T1);
|
|
tcg_gen_mov_tl(s1->cc_srcT, s1->T0);
|
|
tcg_gen_sub_tl(cpu_cc_dst, s1->T0, s1->T1);
|
|
set_cc_op(s1, CC_OP_SUBB + ot);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* if d == OR_TMP0, it means memory operand (address in A0) */
|
|
static void gen_inc(DisasContext *s1, MemOp ot, int d, int c)
|
|
{
|
|
if (s1->prefix & PREFIX_LOCK) {
|
|
if (d != OR_TMP0) {
|
|
/* Lock prefix when destination is not memory */
|
|
gen_illegal_opcode(s1);
|
|
return;
|
|
}
|
|
tcg_gen_movi_tl(s1->T0, c > 0 ? 1 : -1);
|
|
tcg_gen_atomic_add_fetch_tl(s1->T0, s1->A0, s1->T0,
|
|
s1->mem_index, ot | MO_LE);
|
|
} else {
|
|
if (d != OR_TMP0) {
|
|
gen_op_mov_v_reg(s1, ot, s1->T0, d);
|
|
} else {
|
|
gen_op_ld_v(s1, ot, s1->T0, s1->A0);
|
|
}
|
|
tcg_gen_addi_tl(s1->T0, s1->T0, (c > 0 ? 1 : -1));
|
|
gen_op_st_rm_T0_A0(s1, ot, d);
|
|
}
|
|
|
|
gen_compute_eflags_c(s1, cpu_cc_src);
|
|
tcg_gen_mov_tl(cpu_cc_dst, s1->T0);
|
|
set_cc_op(s1, (c > 0 ? CC_OP_INCB : CC_OP_DECB) + ot);
|
|
}
|
|
|
|
static void gen_shift_flags(DisasContext *s, MemOp ot, TCGv result,
|
|
TCGv shm1, TCGv count, bool is_right)
|
|
{
|
|
TCGv_i32 z32, s32, oldop;
|
|
TCGv z_tl;
|
|
|
|
/* Store the results into the CC variables. If we know that the
|
|
variable must be dead, store unconditionally. Otherwise we'll
|
|
need to not disrupt the current contents. */
|
|
z_tl = tcg_const_tl(0);
|
|
if (cc_op_live[s->cc_op] & USES_CC_DST) {
|
|
tcg_gen_movcond_tl(TCG_COND_NE, cpu_cc_dst, count, z_tl,
|
|
result, cpu_cc_dst);
|
|
} else {
|
|
tcg_gen_mov_tl(cpu_cc_dst, result);
|
|
}
|
|
if (cc_op_live[s->cc_op] & USES_CC_SRC) {
|
|
tcg_gen_movcond_tl(TCG_COND_NE, cpu_cc_src, count, z_tl,
|
|
shm1, cpu_cc_src);
|
|
} else {
|
|
tcg_gen_mov_tl(cpu_cc_src, shm1);
|
|
}
|
|
tcg_temp_free(z_tl);
|
|
|
|
/* Get the two potential CC_OP values into temporaries. */
|
|
tcg_gen_movi_i32(s->tmp2_i32, (is_right ? CC_OP_SARB : CC_OP_SHLB) + ot);
|
|
if (s->cc_op == CC_OP_DYNAMIC) {
|
|
oldop = cpu_cc_op;
|
|
} else {
|
|
tcg_gen_movi_i32(s->tmp3_i32, s->cc_op);
|
|
oldop = s->tmp3_i32;
|
|
}
|
|
|
|
/* Conditionally store the CC_OP value. */
|
|
z32 = tcg_const_i32(0);
|
|
s32 = tcg_temp_new_i32();
|
|
tcg_gen_trunc_tl_i32(s32, count);
|
|
tcg_gen_movcond_i32(TCG_COND_NE, cpu_cc_op, s32, z32, s->tmp2_i32, oldop);
|
|
tcg_temp_free_i32(z32);
|
|
tcg_temp_free_i32(s32);
|
|
|
|
/* The CC_OP value is no longer predictable. */
|
|
set_cc_op(s, CC_OP_DYNAMIC);
|
|
}
|
|
|
|
static void gen_shift_rm_T1(DisasContext *s, MemOp ot, int op1,
|
|
int is_right, int is_arith)
|
|
{
|
|
target_ulong mask = (ot == MO_64 ? 0x3f : 0x1f);
|
|
|
|
/* load */
|
|
if (op1 == OR_TMP0) {
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T0, op1);
|
|
}
|
|
|
|
tcg_gen_andi_tl(s->T1, s->T1, mask);
|
|
tcg_gen_subi_tl(s->tmp0, s->T1, 1);
|
|
|
|
if (is_right) {
|
|
if (is_arith) {
|
|
gen_exts(ot, s->T0);
|
|
tcg_gen_sar_tl(s->tmp0, s->T0, s->tmp0);
|
|
tcg_gen_sar_tl(s->T0, s->T0, s->T1);
|
|
} else {
|
|
gen_extu(ot, s->T0);
|
|
tcg_gen_shr_tl(s->tmp0, s->T0, s->tmp0);
|
|
tcg_gen_shr_tl(s->T0, s->T0, s->T1);
|
|
}
|
|
} else {
|
|
tcg_gen_shl_tl(s->tmp0, s->T0, s->tmp0);
|
|
tcg_gen_shl_tl(s->T0, s->T0, s->T1);
|
|
}
|
|
|
|
/* store */
|
|
gen_op_st_rm_T0_A0(s, ot, op1);
|
|
|
|
gen_shift_flags(s, ot, s->T0, s->tmp0, s->T1, is_right);
|
|
}
|
|
|
|
static void gen_shift_rm_im(DisasContext *s, MemOp ot, int op1, int op2,
|
|
int is_right, int is_arith)
|
|
{
|
|
int mask = (ot == MO_64 ? 0x3f : 0x1f);
|
|
|
|
/* load */
|
|
if (op1 == OR_TMP0)
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
else
|
|
gen_op_mov_v_reg(s, ot, s->T0, op1);
|
|
|
|
op2 &= mask;
|
|
if (op2 != 0) {
|
|
if (is_right) {
|
|
if (is_arith) {
|
|
gen_exts(ot, s->T0);
|
|
tcg_gen_sari_tl(s->tmp4, s->T0, op2 - 1);
|
|
tcg_gen_sari_tl(s->T0, s->T0, op2);
|
|
} else {
|
|
gen_extu(ot, s->T0);
|
|
tcg_gen_shri_tl(s->tmp4, s->T0, op2 - 1);
|
|
tcg_gen_shri_tl(s->T0, s->T0, op2);
|
|
}
|
|
} else {
|
|
tcg_gen_shli_tl(s->tmp4, s->T0, op2 - 1);
|
|
tcg_gen_shli_tl(s->T0, s->T0, op2);
|
|
}
|
|
}
|
|
|
|
/* store */
|
|
gen_op_st_rm_T0_A0(s, ot, op1);
|
|
|
|
/* update eflags if non zero shift */
|
|
if (op2 != 0) {
|
|
tcg_gen_mov_tl(cpu_cc_src, s->tmp4);
|
|
tcg_gen_mov_tl(cpu_cc_dst, s->T0);
|
|
set_cc_op(s, (is_right ? CC_OP_SARB : CC_OP_SHLB) + ot);
|
|
}
|
|
}
|
|
|
|
static void gen_rot_rm_T1(DisasContext *s, MemOp ot, int op1, int is_right)
|
|
{
|
|
target_ulong mask = (ot == MO_64 ? 0x3f : 0x1f);
|
|
TCGv_i32 t0, t1;
|
|
|
|
/* load */
|
|
if (op1 == OR_TMP0) {
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T0, op1);
|
|
}
|
|
|
|
tcg_gen_andi_tl(s->T1, s->T1, mask);
|
|
|
|
switch (ot) {
|
|
case MO_8:
|
|
/* Replicate the 8-bit input so that a 32-bit rotate works. */
|
|
tcg_gen_ext8u_tl(s->T0, s->T0);
|
|
tcg_gen_muli_tl(s->T0, s->T0, 0x01010101);
|
|
goto do_long;
|
|
case MO_16:
|
|
/* Replicate the 16-bit input so that a 32-bit rotate works. */
|
|
tcg_gen_deposit_tl(s->T0, s->T0, s->T0, 16, 16);
|
|
goto do_long;
|
|
do_long:
|
|
#ifdef TARGET_X86_64
|
|
case MO_32:
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0);
|
|
tcg_gen_trunc_tl_i32(s->tmp3_i32, s->T1);
|
|
if (is_right) {
|
|
tcg_gen_rotr_i32(s->tmp2_i32, s->tmp2_i32, s->tmp3_i32);
|
|
} else {
|
|
tcg_gen_rotl_i32(s->tmp2_i32, s->tmp2_i32, s->tmp3_i32);
|
|
}
|
|
tcg_gen_extu_i32_tl(s->T0, s->tmp2_i32);
|
|
break;
|
|
#endif
|
|
default:
|
|
if (is_right) {
|
|
tcg_gen_rotr_tl(s->T0, s->T0, s->T1);
|
|
} else {
|
|
tcg_gen_rotl_tl(s->T0, s->T0, s->T1);
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* store */
|
|
gen_op_st_rm_T0_A0(s, ot, op1);
|
|
|
|
/* We'll need the flags computed into CC_SRC. */
|
|
gen_compute_eflags(s);
|
|
|
|
/* The value that was "rotated out" is now present at the other end
|
|
of the word. Compute C into CC_DST and O into CC_SRC2. Note that
|
|
since we've computed the flags into CC_SRC, these variables are
|
|
currently dead. */
|
|
if (is_right) {
|
|
tcg_gen_shri_tl(cpu_cc_src2, s->T0, mask - 1);
|
|
tcg_gen_shri_tl(cpu_cc_dst, s->T0, mask);
|
|
tcg_gen_andi_tl(cpu_cc_dst, cpu_cc_dst, 1);
|
|
} else {
|
|
tcg_gen_shri_tl(cpu_cc_src2, s->T0, mask);
|
|
tcg_gen_andi_tl(cpu_cc_dst, s->T0, 1);
|
|
}
|
|
tcg_gen_andi_tl(cpu_cc_src2, cpu_cc_src2, 1);
|
|
tcg_gen_xor_tl(cpu_cc_src2, cpu_cc_src2, cpu_cc_dst);
|
|
|
|
/* Now conditionally store the new CC_OP value. If the shift count
|
|
is 0 we keep the CC_OP_EFLAGS setting so that only CC_SRC is live.
|
|
Otherwise reuse CC_OP_ADCOX which have the C and O flags split out
|
|
exactly as we computed above. */
|
|
t0 = tcg_const_i32(0);
|
|
t1 = tcg_temp_new_i32();
|
|
tcg_gen_trunc_tl_i32(t1, s->T1);
|
|
tcg_gen_movi_i32(s->tmp2_i32, CC_OP_ADCOX);
|
|
tcg_gen_movi_i32(s->tmp3_i32, CC_OP_EFLAGS);
|
|
tcg_gen_movcond_i32(TCG_COND_NE, cpu_cc_op, t1, t0,
|
|
s->tmp2_i32, s->tmp3_i32);
|
|
tcg_temp_free_i32(t0);
|
|
tcg_temp_free_i32(t1);
|
|
|
|
/* The CC_OP value is no longer predictable. */
|
|
set_cc_op(s, CC_OP_DYNAMIC);
|
|
}
|
|
|
|
static void gen_rot_rm_im(DisasContext *s, MemOp ot, int op1, int op2,
|
|
int is_right)
|
|
{
|
|
int mask = (ot == MO_64 ? 0x3f : 0x1f);
|
|
int shift;
|
|
|
|
/* load */
|
|
if (op1 == OR_TMP0) {
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T0, op1);
|
|
}
|
|
|
|
op2 &= mask;
|
|
if (op2 != 0) {
|
|
switch (ot) {
|
|
#ifdef TARGET_X86_64
|
|
case MO_32:
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0);
|
|
if (is_right) {
|
|
tcg_gen_rotri_i32(s->tmp2_i32, s->tmp2_i32, op2);
|
|
} else {
|
|
tcg_gen_rotli_i32(s->tmp2_i32, s->tmp2_i32, op2);
|
|
}
|
|
tcg_gen_extu_i32_tl(s->T0, s->tmp2_i32);
|
|
break;
|
|
#endif
|
|
default:
|
|
if (is_right) {
|
|
tcg_gen_rotri_tl(s->T0, s->T0, op2);
|
|
} else {
|
|
tcg_gen_rotli_tl(s->T0, s->T0, op2);
|
|
}
|
|
break;
|
|
case MO_8:
|
|
mask = 7;
|
|
goto do_shifts;
|
|
case MO_16:
|
|
mask = 15;
|
|
do_shifts:
|
|
shift = op2 & mask;
|
|
if (is_right) {
|
|
shift = mask + 1 - shift;
|
|
}
|
|
gen_extu(ot, s->T0);
|
|
tcg_gen_shli_tl(s->tmp0, s->T0, shift);
|
|
tcg_gen_shri_tl(s->T0, s->T0, mask + 1 - shift);
|
|
tcg_gen_or_tl(s->T0, s->T0, s->tmp0);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/* store */
|
|
gen_op_st_rm_T0_A0(s, ot, op1);
|
|
|
|
if (op2 != 0) {
|
|
/* Compute the flags into CC_SRC. */
|
|
gen_compute_eflags(s);
|
|
|
|
/* The value that was "rotated out" is now present at the other end
|
|
of the word. Compute C into CC_DST and O into CC_SRC2. Note that
|
|
since we've computed the flags into CC_SRC, these variables are
|
|
currently dead. */
|
|
if (is_right) {
|
|
tcg_gen_shri_tl(cpu_cc_src2, s->T0, mask - 1);
|
|
tcg_gen_shri_tl(cpu_cc_dst, s->T0, mask);
|
|
tcg_gen_andi_tl(cpu_cc_dst, cpu_cc_dst, 1);
|
|
} else {
|
|
tcg_gen_shri_tl(cpu_cc_src2, s->T0, mask);
|
|
tcg_gen_andi_tl(cpu_cc_dst, s->T0, 1);
|
|
}
|
|
tcg_gen_andi_tl(cpu_cc_src2, cpu_cc_src2, 1);
|
|
tcg_gen_xor_tl(cpu_cc_src2, cpu_cc_src2, cpu_cc_dst);
|
|
set_cc_op(s, CC_OP_ADCOX);
|
|
}
|
|
}
|
|
|
|
/* XXX: add faster immediate = 1 case */
|
|
static void gen_rotc_rm_T1(DisasContext *s, MemOp ot, int op1,
|
|
int is_right)
|
|
{
|
|
gen_compute_eflags(s);
|
|
assert(s->cc_op == CC_OP_EFLAGS);
|
|
|
|
/* load */
|
|
if (op1 == OR_TMP0)
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
else
|
|
gen_op_mov_v_reg(s, ot, s->T0, op1);
|
|
|
|
if (is_right) {
|
|
switch (ot) {
|
|
case MO_8:
|
|
gen_helper_rcrb(s->T0, cpu_env, s->T0, s->T1);
|
|
break;
|
|
case MO_16:
|
|
gen_helper_rcrw(s->T0, cpu_env, s->T0, s->T1);
|
|
break;
|
|
case MO_32:
|
|
gen_helper_rcrl(s->T0, cpu_env, s->T0, s->T1);
|
|
break;
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
gen_helper_rcrq(s->T0, cpu_env, s->T0, s->T1);
|
|
break;
|
|
#endif
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
} else {
|
|
switch (ot) {
|
|
case MO_8:
|
|
gen_helper_rclb(s->T0, cpu_env, s->T0, s->T1);
|
|
break;
|
|
case MO_16:
|
|
gen_helper_rclw(s->T0, cpu_env, s->T0, s->T1);
|
|
break;
|
|
case MO_32:
|
|
gen_helper_rcll(s->T0, cpu_env, s->T0, s->T1);
|
|
break;
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
gen_helper_rclq(s->T0, cpu_env, s->T0, s->T1);
|
|
break;
|
|
#endif
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
}
|
|
/* store */
|
|
gen_op_st_rm_T0_A0(s, ot, op1);
|
|
}
|
|
|
|
/* XXX: add faster immediate case */
|
|
static void gen_shiftd_rm_T1(DisasContext *s, MemOp ot, int op1,
|
|
bool is_right, TCGv count_in)
|
|
{
|
|
target_ulong mask = (ot == MO_64 ? 63 : 31);
|
|
TCGv count;
|
|
|
|
/* load */
|
|
if (op1 == OR_TMP0) {
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T0, op1);
|
|
}
|
|
|
|
count = tcg_temp_new();
|
|
tcg_gen_andi_tl(count, count_in, mask);
|
|
|
|
switch (ot) {
|
|
case MO_16:
|
|
/* Note: we implement the Intel behaviour for shift count > 16.
|
|
This means "shrdw C, B, A" shifts A:B:A >> C. Build the B:A
|
|
portion by constructing it as a 32-bit value. */
|
|
if (is_right) {
|
|
tcg_gen_deposit_tl(s->tmp0, s->T0, s->T1, 16, 16);
|
|
tcg_gen_mov_tl(s->T1, s->T0);
|
|
tcg_gen_mov_tl(s->T0, s->tmp0);
|
|
} else {
|
|
tcg_gen_deposit_tl(s->T1, s->T0, s->T1, 16, 16);
|
|
}
|
|
/*
|
|
* If TARGET_X86_64 defined then fall through into MO_32 case,
|
|
* otherwise fall through default case.
|
|
*/
|
|
case MO_32:
|
|
#ifdef TARGET_X86_64
|
|
/* Concatenate the two 32-bit values and use a 64-bit shift. */
|
|
tcg_gen_subi_tl(s->tmp0, count, 1);
|
|
if (is_right) {
|
|
tcg_gen_concat_tl_i64(s->T0, s->T0, s->T1);
|
|
tcg_gen_shr_i64(s->tmp0, s->T0, s->tmp0);
|
|
tcg_gen_shr_i64(s->T0, s->T0, count);
|
|
} else {
|
|
tcg_gen_concat_tl_i64(s->T0, s->T1, s->T0);
|
|
tcg_gen_shl_i64(s->tmp0, s->T0, s->tmp0);
|
|
tcg_gen_shl_i64(s->T0, s->T0, count);
|
|
tcg_gen_shri_i64(s->tmp0, s->tmp0, 32);
|
|
tcg_gen_shri_i64(s->T0, s->T0, 32);
|
|
}
|
|
break;
|
|
#endif
|
|
default:
|
|
tcg_gen_subi_tl(s->tmp0, count, 1);
|
|
if (is_right) {
|
|
tcg_gen_shr_tl(s->tmp0, s->T0, s->tmp0);
|
|
|
|
tcg_gen_subfi_tl(s->tmp4, mask + 1, count);
|
|
tcg_gen_shr_tl(s->T0, s->T0, count);
|
|
tcg_gen_shl_tl(s->T1, s->T1, s->tmp4);
|
|
} else {
|
|
tcg_gen_shl_tl(s->tmp0, s->T0, s->tmp0);
|
|
if (ot == MO_16) {
|
|
/* Only needed if count > 16, for Intel behaviour. */
|
|
tcg_gen_subfi_tl(s->tmp4, 33, count);
|
|
tcg_gen_shr_tl(s->tmp4, s->T1, s->tmp4);
|
|
tcg_gen_or_tl(s->tmp0, s->tmp0, s->tmp4);
|
|
}
|
|
|
|
tcg_gen_subfi_tl(s->tmp4, mask + 1, count);
|
|
tcg_gen_shl_tl(s->T0, s->T0, count);
|
|
tcg_gen_shr_tl(s->T1, s->T1, s->tmp4);
|
|
}
|
|
tcg_gen_movi_tl(s->tmp4, 0);
|
|
tcg_gen_movcond_tl(TCG_COND_EQ, s->T1, count, s->tmp4,
|
|
s->tmp4, s->T1);
|
|
tcg_gen_or_tl(s->T0, s->T0, s->T1);
|
|
break;
|
|
}
|
|
|
|
/* store */
|
|
gen_op_st_rm_T0_A0(s, ot, op1);
|
|
|
|
gen_shift_flags(s, ot, s->T0, s->tmp0, count, is_right);
|
|
tcg_temp_free(count);
|
|
}
|
|
|
|
static void gen_shift(DisasContext *s1, int op, MemOp ot, int d, int s)
|
|
{
|
|
if (s != OR_TMP1)
|
|
gen_op_mov_v_reg(s1, ot, s1->T1, s);
|
|
switch(op) {
|
|
case OP_ROL:
|
|
gen_rot_rm_T1(s1, ot, d, 0);
|
|
break;
|
|
case OP_ROR:
|
|
gen_rot_rm_T1(s1, ot, d, 1);
|
|
break;
|
|
case OP_SHL:
|
|
case OP_SHL1:
|
|
gen_shift_rm_T1(s1, ot, d, 0, 0);
|
|
break;
|
|
case OP_SHR:
|
|
gen_shift_rm_T1(s1, ot, d, 1, 0);
|
|
break;
|
|
case OP_SAR:
|
|
gen_shift_rm_T1(s1, ot, d, 1, 1);
|
|
break;
|
|
case OP_RCL:
|
|
gen_rotc_rm_T1(s1, ot, d, 0);
|
|
break;
|
|
case OP_RCR:
|
|
gen_rotc_rm_T1(s1, ot, d, 1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
static void gen_shifti(DisasContext *s1, int op, MemOp ot, int d, int c)
|
|
{
|
|
switch(op) {
|
|
case OP_ROL:
|
|
gen_rot_rm_im(s1, ot, d, c, 0);
|
|
break;
|
|
case OP_ROR:
|
|
gen_rot_rm_im(s1, ot, d, c, 1);
|
|
break;
|
|
case OP_SHL:
|
|
case OP_SHL1:
|
|
gen_shift_rm_im(s1, ot, d, c, 0, 0);
|
|
break;
|
|
case OP_SHR:
|
|
gen_shift_rm_im(s1, ot, d, c, 1, 0);
|
|
break;
|
|
case OP_SAR:
|
|
gen_shift_rm_im(s1, ot, d, c, 1, 1);
|
|
break;
|
|
default:
|
|
/* currently not optimized */
|
|
tcg_gen_movi_tl(s1->T1, c);
|
|
gen_shift(s1, op, ot, d, OR_TMP1);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#define X86_MAX_INSN_LENGTH 15
|
|
|
|
static uint64_t advance_pc(CPUX86State *env, DisasContext *s, int num_bytes)
|
|
{
|
|
uint64_t pc = s->pc;
|
|
|
|
/* This is a subsequent insn that crosses a page boundary. */
|
|
if (s->base.num_insns > 1 &&
|
|
!is_same_page(&s->base, s->pc + num_bytes - 1)) {
|
|
siglongjmp(s->jmpbuf, 2);
|
|
}
|
|
|
|
s->pc += num_bytes;
|
|
if (unlikely(cur_insn_len(s) > X86_MAX_INSN_LENGTH)) {
|
|
/* If the instruction's 16th byte is on a different page than the 1st, a
|
|
* page fault on the second page wins over the general protection fault
|
|
* caused by the instruction being too long.
|
|
* This can happen even if the operand is only one byte long!
|
|
*/
|
|
if (((s->pc - 1) ^ (pc - 1)) & TARGET_PAGE_MASK) {
|
|
volatile uint8_t unused =
|
|
cpu_ldub_code(env, (s->pc - 1) & TARGET_PAGE_MASK);
|
|
(void) unused;
|
|
}
|
|
siglongjmp(s->jmpbuf, 1);
|
|
}
|
|
|
|
return pc;
|
|
}
|
|
|
|
static inline uint8_t x86_ldub_code(CPUX86State *env, DisasContext *s)
|
|
{
|
|
return translator_ldub(env, &s->base, advance_pc(env, s, 1));
|
|
}
|
|
|
|
static inline int16_t x86_ldsw_code(CPUX86State *env, DisasContext *s)
|
|
{
|
|
return translator_lduw(env, &s->base, advance_pc(env, s, 2));
|
|
}
|
|
|
|
static inline uint16_t x86_lduw_code(CPUX86State *env, DisasContext *s)
|
|
{
|
|
return translator_lduw(env, &s->base, advance_pc(env, s, 2));
|
|
}
|
|
|
|
static inline uint32_t x86_ldl_code(CPUX86State *env, DisasContext *s)
|
|
{
|
|
return translator_ldl(env, &s->base, advance_pc(env, s, 4));
|
|
}
|
|
|
|
#ifdef TARGET_X86_64
|
|
static inline uint64_t x86_ldq_code(CPUX86State *env, DisasContext *s)
|
|
{
|
|
return translator_ldq(env, &s->base, advance_pc(env, s, 8));
|
|
}
|
|
#endif
|
|
|
|
/* Decompose an address. */
|
|
|
|
typedef struct AddressParts {
|
|
int def_seg;
|
|
int base;
|
|
int index;
|
|
int scale;
|
|
target_long disp;
|
|
} AddressParts;
|
|
|
|
static AddressParts gen_lea_modrm_0(CPUX86State *env, DisasContext *s,
|
|
int modrm)
|
|
{
|
|
int def_seg, base, index, scale, mod, rm;
|
|
target_long disp;
|
|
bool havesib;
|
|
|
|
def_seg = R_DS;
|
|
index = -1;
|
|
scale = 0;
|
|
disp = 0;
|
|
|
|
mod = (modrm >> 6) & 3;
|
|
rm = modrm & 7;
|
|
base = rm | REX_B(s);
|
|
|
|
if (mod == 3) {
|
|
/* Normally filtered out earlier, but including this path
|
|
simplifies multi-byte nop, as well as bndcl, bndcu, bndcn. */
|
|
goto done;
|
|
}
|
|
|
|
switch (s->aflag) {
|
|
case MO_64:
|
|
case MO_32:
|
|
havesib = 0;
|
|
if (rm == 4) {
|
|
int code = x86_ldub_code(env, s);
|
|
scale = (code >> 6) & 3;
|
|
index = ((code >> 3) & 7) | REX_X(s);
|
|
if (index == 4) {
|
|
index = -1; /* no index */
|
|
}
|
|
base = (code & 7) | REX_B(s);
|
|
havesib = 1;
|
|
}
|
|
|
|
switch (mod) {
|
|
case 0:
|
|
if ((base & 7) == 5) {
|
|
base = -1;
|
|
disp = (int32_t)x86_ldl_code(env, s);
|
|
if (CODE64(s) && !havesib) {
|
|
base = -2;
|
|
disp += s->pc + s->rip_offset;
|
|
}
|
|
}
|
|
break;
|
|
case 1:
|
|
disp = (int8_t)x86_ldub_code(env, s);
|
|
break;
|
|
default:
|
|
case 2:
|
|
disp = (int32_t)x86_ldl_code(env, s);
|
|
break;
|
|
}
|
|
|
|
/* For correct popl handling with esp. */
|
|
if (base == R_ESP && s->popl_esp_hack) {
|
|
disp += s->popl_esp_hack;
|
|
}
|
|
if (base == R_EBP || base == R_ESP) {
|
|
def_seg = R_SS;
|
|
}
|
|
break;
|
|
|
|
case MO_16:
|
|
if (mod == 0) {
|
|
if (rm == 6) {
|
|
base = -1;
|
|
disp = x86_lduw_code(env, s);
|
|
break;
|
|
}
|
|
} else if (mod == 1) {
|
|
disp = (int8_t)x86_ldub_code(env, s);
|
|
} else {
|
|
disp = (int16_t)x86_lduw_code(env, s);
|
|
}
|
|
|
|
switch (rm) {
|
|
case 0:
|
|
base = R_EBX;
|
|
index = R_ESI;
|
|
break;
|
|
case 1:
|
|
base = R_EBX;
|
|
index = R_EDI;
|
|
break;
|
|
case 2:
|
|
base = R_EBP;
|
|
index = R_ESI;
|
|
def_seg = R_SS;
|
|
break;
|
|
case 3:
|
|
base = R_EBP;
|
|
index = R_EDI;
|
|
def_seg = R_SS;
|
|
break;
|
|
case 4:
|
|
base = R_ESI;
|
|
break;
|
|
case 5:
|
|
base = R_EDI;
|
|
break;
|
|
case 6:
|
|
base = R_EBP;
|
|
def_seg = R_SS;
|
|
break;
|
|
default:
|
|
case 7:
|
|
base = R_EBX;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
|
|
done:
|
|
return (AddressParts){ def_seg, base, index, scale, disp };
|
|
}
|
|
|
|
/* Compute the address, with a minimum number of TCG ops. */
|
|
static TCGv gen_lea_modrm_1(DisasContext *s, AddressParts a, bool is_vsib)
|
|
{
|
|
TCGv ea = NULL;
|
|
|
|
if (a.index >= 0 && !is_vsib) {
|
|
if (a.scale == 0) {
|
|
ea = cpu_regs[a.index];
|
|
} else {
|
|
tcg_gen_shli_tl(s->A0, cpu_regs[a.index], a.scale);
|
|
ea = s->A0;
|
|
}
|
|
if (a.base >= 0) {
|
|
tcg_gen_add_tl(s->A0, ea, cpu_regs[a.base]);
|
|
ea = s->A0;
|
|
}
|
|
} else if (a.base >= 0) {
|
|
ea = cpu_regs[a.base];
|
|
}
|
|
if (!ea) {
|
|
if (TARGET_TB_PCREL && a.base == -2) {
|
|
/* With cpu_eip ~= pc_save, the expression is pc-relative. */
|
|
tcg_gen_addi_tl(s->A0, cpu_eip, a.disp - s->pc_save);
|
|
} else {
|
|
tcg_gen_movi_tl(s->A0, a.disp);
|
|
}
|
|
ea = s->A0;
|
|
} else if (a.disp != 0) {
|
|
tcg_gen_addi_tl(s->A0, ea, a.disp);
|
|
ea = s->A0;
|
|
}
|
|
|
|
return ea;
|
|
}
|
|
|
|
static void gen_lea_modrm(CPUX86State *env, DisasContext *s, int modrm)
|
|
{
|
|
AddressParts a = gen_lea_modrm_0(env, s, modrm);
|
|
TCGv ea = gen_lea_modrm_1(s, a, false);
|
|
gen_lea_v_seg(s, s->aflag, ea, a.def_seg, s->override);
|
|
}
|
|
|
|
static void gen_nop_modrm(CPUX86State *env, DisasContext *s, int modrm)
|
|
{
|
|
(void)gen_lea_modrm_0(env, s, modrm);
|
|
}
|
|
|
|
/* Used for BNDCL, BNDCU, BNDCN. */
|
|
static void gen_bndck(CPUX86State *env, DisasContext *s, int modrm,
|
|
TCGCond cond, TCGv_i64 bndv)
|
|
{
|
|
AddressParts a = gen_lea_modrm_0(env, s, modrm);
|
|
TCGv ea = gen_lea_modrm_1(s, a, false);
|
|
|
|
tcg_gen_extu_tl_i64(s->tmp1_i64, ea);
|
|
if (!CODE64(s)) {
|
|
tcg_gen_ext32u_i64(s->tmp1_i64, s->tmp1_i64);
|
|
}
|
|
tcg_gen_setcond_i64(cond, s->tmp1_i64, s->tmp1_i64, bndv);
|
|
tcg_gen_extrl_i64_i32(s->tmp2_i32, s->tmp1_i64);
|
|
gen_helper_bndck(cpu_env, s->tmp2_i32);
|
|
}
|
|
|
|
/* used for LEA and MOV AX, mem */
|
|
static void gen_add_A0_ds_seg(DisasContext *s)
|
|
{
|
|
gen_lea_v_seg(s, s->aflag, s->A0, R_DS, s->override);
|
|
}
|
|
|
|
/* generate modrm memory load or store of 'reg'. TMP0 is used if reg ==
|
|
OR_TMP0 */
|
|
static void gen_ldst_modrm(CPUX86State *env, DisasContext *s, int modrm,
|
|
MemOp ot, int reg, int is_store)
|
|
{
|
|
int mod, rm;
|
|
|
|
mod = (modrm >> 6) & 3;
|
|
rm = (modrm & 7) | REX_B(s);
|
|
if (mod == 3) {
|
|
if (is_store) {
|
|
if (reg != OR_TMP0)
|
|
gen_op_mov_v_reg(s, ot, s->T0, reg);
|
|
gen_op_mov_reg_v(s, ot, rm, s->T0);
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T0, rm);
|
|
if (reg != OR_TMP0)
|
|
gen_op_mov_reg_v(s, ot, reg, s->T0);
|
|
}
|
|
} else {
|
|
gen_lea_modrm(env, s, modrm);
|
|
if (is_store) {
|
|
if (reg != OR_TMP0)
|
|
gen_op_mov_v_reg(s, ot, s->T0, reg);
|
|
gen_op_st_v(s, ot, s->T0, s->A0);
|
|
} else {
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
if (reg != OR_TMP0)
|
|
gen_op_mov_reg_v(s, ot, reg, s->T0);
|
|
}
|
|
}
|
|
}
|
|
|
|
static target_ulong insn_get_addr(CPUX86State *env, DisasContext *s, MemOp ot)
|
|
{
|
|
target_ulong ret;
|
|
|
|
switch (ot) {
|
|
case MO_8:
|
|
ret = x86_ldub_code(env, s);
|
|
break;
|
|
case MO_16:
|
|
ret = x86_lduw_code(env, s);
|
|
break;
|
|
case MO_32:
|
|
ret = x86_ldl_code(env, s);
|
|
break;
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
ret = x86_ldq_code(env, s);
|
|
break;
|
|
#endif
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static inline uint32_t insn_get(CPUX86State *env, DisasContext *s, MemOp ot)
|
|
{
|
|
uint32_t ret;
|
|
|
|
switch (ot) {
|
|
case MO_8:
|
|
ret = x86_ldub_code(env, s);
|
|
break;
|
|
case MO_16:
|
|
ret = x86_lduw_code(env, s);
|
|
break;
|
|
case MO_32:
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
#endif
|
|
ret = x86_ldl_code(env, s);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static target_long insn_get_signed(CPUX86State *env, DisasContext *s, MemOp ot)
|
|
{
|
|
target_long ret;
|
|
|
|
switch (ot) {
|
|
case MO_8:
|
|
ret = (int8_t) x86_ldub_code(env, s);
|
|
break;
|
|
case MO_16:
|
|
ret = (int16_t) x86_lduw_code(env, s);
|
|
break;
|
|
case MO_32:
|
|
ret = (int32_t) x86_ldl_code(env, s);
|
|
break;
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
ret = x86_ldq_code(env, s);
|
|
break;
|
|
#endif
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
return ret;
|
|
}
|
|
|
|
static inline int insn_const_size(MemOp ot)
|
|
{
|
|
if (ot <= MO_32) {
|
|
return 1 << ot;
|
|
} else {
|
|
return 4;
|
|
}
|
|
}
|
|
|
|
static void gen_jcc(DisasContext *s, int b, int diff)
|
|
{
|
|
TCGLabel *l1 = gen_new_label();
|
|
|
|
gen_jcc1(s, b, l1);
|
|
gen_jmp_rel_csize(s, 0, 1);
|
|
gen_set_label(l1);
|
|
gen_jmp_rel(s, s->dflag, diff, 0);
|
|
}
|
|
|
|
static void gen_cmovcc1(CPUX86State *env, DisasContext *s, MemOp ot, int b,
|
|
int modrm, int reg)
|
|
{
|
|
CCPrepare cc;
|
|
|
|
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
|
|
|
|
cc = gen_prepare_cc(s, b, s->T1);
|
|
if (cc.mask != -1) {
|
|
TCGv t0 = tcg_temp_new();
|
|
tcg_gen_andi_tl(t0, cc.reg, cc.mask);
|
|
cc.reg = t0;
|
|
}
|
|
if (!cc.use_reg2) {
|
|
cc.reg2 = tcg_const_tl(cc.imm);
|
|
}
|
|
|
|
tcg_gen_movcond_tl(cc.cond, s->T0, cc.reg, cc.reg2,
|
|
s->T0, cpu_regs[reg]);
|
|
gen_op_mov_reg_v(s, ot, reg, s->T0);
|
|
|
|
if (cc.mask != -1) {
|
|
tcg_temp_free(cc.reg);
|
|
}
|
|
if (!cc.use_reg2) {
|
|
tcg_temp_free(cc.reg2);
|
|
}
|
|
}
|
|
|
|
static inline void gen_op_movl_T0_seg(DisasContext *s, X86Seg seg_reg)
|
|
{
|
|
tcg_gen_ld32u_tl(s->T0, cpu_env,
|
|
offsetof(CPUX86State,segs[seg_reg].selector));
|
|
}
|
|
|
|
static inline void gen_op_movl_seg_T0_vm(DisasContext *s, X86Seg seg_reg)
|
|
{
|
|
tcg_gen_ext16u_tl(s->T0, s->T0);
|
|
tcg_gen_st32_tl(s->T0, cpu_env,
|
|
offsetof(CPUX86State,segs[seg_reg].selector));
|
|
tcg_gen_shli_tl(cpu_seg_base[seg_reg], s->T0, 4);
|
|
}
|
|
|
|
/* move T0 to seg_reg and compute if the CPU state may change. Never
|
|
call this function with seg_reg == R_CS */
|
|
static void gen_movl_seg_T0(DisasContext *s, X86Seg seg_reg)
|
|
{
|
|
if (PE(s) && !VM86(s)) {
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0);
|
|
gen_helper_load_seg(cpu_env, tcg_const_i32(seg_reg), s->tmp2_i32);
|
|
/* abort translation because the addseg value may change or
|
|
because ss32 may change. For R_SS, translation must always
|
|
stop as a special handling must be done to disable hardware
|
|
interrupts for the next instruction */
|
|
if (seg_reg == R_SS) {
|
|
s->base.is_jmp = DISAS_EOB_INHIBIT_IRQ;
|
|
} else if (CODE32(s) && seg_reg < R_FS) {
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
}
|
|
} else {
|
|
gen_op_movl_seg_T0_vm(s, seg_reg);
|
|
if (seg_reg == R_SS) {
|
|
s->base.is_jmp = DISAS_EOB_INHIBIT_IRQ;
|
|
}
|
|
}
|
|
}
|
|
|
|
static void gen_svm_check_intercept(DisasContext *s, uint32_t type)
|
|
{
|
|
/* no SVM activated; fast case */
|
|
if (likely(!GUEST(s))) {
|
|
return;
|
|
}
|
|
gen_helper_svm_check_intercept(cpu_env, tcg_constant_i32(type));
|
|
}
|
|
|
|
static inline void gen_stack_update(DisasContext *s, int addend)
|
|
{
|
|
gen_op_add_reg_im(s, mo_stacksize(s), R_ESP, addend);
|
|
}
|
|
|
|
/* Generate a push. It depends on ss32, addseg and dflag. */
|
|
static void gen_push_v(DisasContext *s, TCGv val)
|
|
{
|
|
MemOp d_ot = mo_pushpop(s, s->dflag);
|
|
MemOp a_ot = mo_stacksize(s);
|
|
int size = 1 << d_ot;
|
|
TCGv new_esp = s->A0;
|
|
|
|
tcg_gen_subi_tl(s->A0, cpu_regs[R_ESP], size);
|
|
|
|
if (!CODE64(s)) {
|
|
if (ADDSEG(s)) {
|
|
new_esp = s->tmp4;
|
|
tcg_gen_mov_tl(new_esp, s->A0);
|
|
}
|
|
gen_lea_v_seg(s, a_ot, s->A0, R_SS, -1);
|
|
}
|
|
|
|
gen_op_st_v(s, d_ot, val, s->A0);
|
|
gen_op_mov_reg_v(s, a_ot, R_ESP, new_esp);
|
|
}
|
|
|
|
/* two step pop is necessary for precise exceptions */
|
|
static MemOp gen_pop_T0(DisasContext *s)
|
|
{
|
|
MemOp d_ot = mo_pushpop(s, s->dflag);
|
|
|
|
gen_lea_v_seg(s, mo_stacksize(s), cpu_regs[R_ESP], R_SS, -1);
|
|
gen_op_ld_v(s, d_ot, s->T0, s->A0);
|
|
|
|
return d_ot;
|
|
}
|
|
|
|
static inline void gen_pop_update(DisasContext *s, MemOp ot)
|
|
{
|
|
gen_stack_update(s, 1 << ot);
|
|
}
|
|
|
|
static inline void gen_stack_A0(DisasContext *s)
|
|
{
|
|
gen_lea_v_seg(s, SS32(s) ? MO_32 : MO_16, cpu_regs[R_ESP], R_SS, -1);
|
|
}
|
|
|
|
static void gen_pusha(DisasContext *s)
|
|
{
|
|
MemOp s_ot = SS32(s) ? MO_32 : MO_16;
|
|
MemOp d_ot = s->dflag;
|
|
int size = 1 << d_ot;
|
|
int i;
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
tcg_gen_addi_tl(s->A0, cpu_regs[R_ESP], (i - 8) * size);
|
|
gen_lea_v_seg(s, s_ot, s->A0, R_SS, -1);
|
|
gen_op_st_v(s, d_ot, cpu_regs[7 - i], s->A0);
|
|
}
|
|
|
|
gen_stack_update(s, -8 * size);
|
|
}
|
|
|
|
static void gen_popa(DisasContext *s)
|
|
{
|
|
MemOp s_ot = SS32(s) ? MO_32 : MO_16;
|
|
MemOp d_ot = s->dflag;
|
|
int size = 1 << d_ot;
|
|
int i;
|
|
|
|
for (i = 0; i < 8; i++) {
|
|
/* ESP is not reloaded */
|
|
if (7 - i == R_ESP) {
|
|
continue;
|
|
}
|
|
tcg_gen_addi_tl(s->A0, cpu_regs[R_ESP], i * size);
|
|
gen_lea_v_seg(s, s_ot, s->A0, R_SS, -1);
|
|
gen_op_ld_v(s, d_ot, s->T0, s->A0);
|
|
gen_op_mov_reg_v(s, d_ot, 7 - i, s->T0);
|
|
}
|
|
|
|
gen_stack_update(s, 8 * size);
|
|
}
|
|
|
|
static void gen_enter(DisasContext *s, int esp_addend, int level)
|
|
{
|
|
MemOp d_ot = mo_pushpop(s, s->dflag);
|
|
MemOp a_ot = CODE64(s) ? MO_64 : SS32(s) ? MO_32 : MO_16;
|
|
int size = 1 << d_ot;
|
|
|
|
/* Push BP; compute FrameTemp into T1. */
|
|
tcg_gen_subi_tl(s->T1, cpu_regs[R_ESP], size);
|
|
gen_lea_v_seg(s, a_ot, s->T1, R_SS, -1);
|
|
gen_op_st_v(s, d_ot, cpu_regs[R_EBP], s->A0);
|
|
|
|
level &= 31;
|
|
if (level != 0) {
|
|
int i;
|
|
|
|
/* Copy level-1 pointers from the previous frame. */
|
|
for (i = 1; i < level; ++i) {
|
|
tcg_gen_subi_tl(s->A0, cpu_regs[R_EBP], size * i);
|
|
gen_lea_v_seg(s, a_ot, s->A0, R_SS, -1);
|
|
gen_op_ld_v(s, d_ot, s->tmp0, s->A0);
|
|
|
|
tcg_gen_subi_tl(s->A0, s->T1, size * i);
|
|
gen_lea_v_seg(s, a_ot, s->A0, R_SS, -1);
|
|
gen_op_st_v(s, d_ot, s->tmp0, s->A0);
|
|
}
|
|
|
|
/* Push the current FrameTemp as the last level. */
|
|
tcg_gen_subi_tl(s->A0, s->T1, size * level);
|
|
gen_lea_v_seg(s, a_ot, s->A0, R_SS, -1);
|
|
gen_op_st_v(s, d_ot, s->T1, s->A0);
|
|
}
|
|
|
|
/* Copy the FrameTemp value to EBP. */
|
|
gen_op_mov_reg_v(s, a_ot, R_EBP, s->T1);
|
|
|
|
/* Compute the final value of ESP. */
|
|
tcg_gen_subi_tl(s->T1, s->T1, esp_addend + size * level);
|
|
gen_op_mov_reg_v(s, a_ot, R_ESP, s->T1);
|
|
}
|
|
|
|
static void gen_leave(DisasContext *s)
|
|
{
|
|
MemOp d_ot = mo_pushpop(s, s->dflag);
|
|
MemOp a_ot = mo_stacksize(s);
|
|
|
|
gen_lea_v_seg(s, a_ot, cpu_regs[R_EBP], R_SS, -1);
|
|
gen_op_ld_v(s, d_ot, s->T0, s->A0);
|
|
|
|
tcg_gen_addi_tl(s->T1, cpu_regs[R_EBP], 1 << d_ot);
|
|
|
|
gen_op_mov_reg_v(s, d_ot, R_EBP, s->T0);
|
|
gen_op_mov_reg_v(s, a_ot, R_ESP, s->T1);
|
|
}
|
|
|
|
/* Similarly, except that the assumption here is that we don't decode
|
|
the instruction at all -- either a missing opcode, an unimplemented
|
|
feature, or just a bogus instruction stream. */
|
|
static void gen_unknown_opcode(CPUX86State *env, DisasContext *s)
|
|
{
|
|
gen_illegal_opcode(s);
|
|
|
|
if (qemu_loglevel_mask(LOG_UNIMP)) {
|
|
FILE *logfile = qemu_log_trylock();
|
|
if (logfile) {
|
|
target_ulong pc = s->base.pc_next, end = s->pc;
|
|
|
|
fprintf(logfile, "ILLOPC: " TARGET_FMT_lx ":", pc);
|
|
for (; pc < end; ++pc) {
|
|
fprintf(logfile, " %02x", cpu_ldub_code(env, pc));
|
|
}
|
|
fprintf(logfile, "\n");
|
|
qemu_log_unlock(logfile);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* an interrupt is different from an exception because of the
|
|
privilege checks */
|
|
static void gen_interrupt(DisasContext *s, int intno)
|
|
{
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_raise_interrupt(cpu_env, tcg_constant_i32(intno),
|
|
cur_insn_len_i32(s));
|
|
s->base.is_jmp = DISAS_NORETURN;
|
|
}
|
|
|
|
static void gen_set_hflag(DisasContext *s, uint32_t mask)
|
|
{
|
|
if ((s->flags & mask) == 0) {
|
|
TCGv_i32 t = tcg_temp_new_i32();
|
|
tcg_gen_ld_i32(t, cpu_env, offsetof(CPUX86State, hflags));
|
|
tcg_gen_ori_i32(t, t, mask);
|
|
tcg_gen_st_i32(t, cpu_env, offsetof(CPUX86State, hflags));
|
|
tcg_temp_free_i32(t);
|
|
s->flags |= mask;
|
|
}
|
|
}
|
|
|
|
static void gen_reset_hflag(DisasContext *s, uint32_t mask)
|
|
{
|
|
if (s->flags & mask) {
|
|
TCGv_i32 t = tcg_temp_new_i32();
|
|
tcg_gen_ld_i32(t, cpu_env, offsetof(CPUX86State, hflags));
|
|
tcg_gen_andi_i32(t, t, ~mask);
|
|
tcg_gen_st_i32(t, cpu_env, offsetof(CPUX86State, hflags));
|
|
tcg_temp_free_i32(t);
|
|
s->flags &= ~mask;
|
|
}
|
|
}
|
|
|
|
static void gen_set_eflags(DisasContext *s, target_ulong mask)
|
|
{
|
|
TCGv t = tcg_temp_new();
|
|
|
|
tcg_gen_ld_tl(t, cpu_env, offsetof(CPUX86State, eflags));
|
|
tcg_gen_ori_tl(t, t, mask);
|
|
tcg_gen_st_tl(t, cpu_env, offsetof(CPUX86State, eflags));
|
|
tcg_temp_free(t);
|
|
}
|
|
|
|
static void gen_reset_eflags(DisasContext *s, target_ulong mask)
|
|
{
|
|
TCGv t = tcg_temp_new();
|
|
|
|
tcg_gen_ld_tl(t, cpu_env, offsetof(CPUX86State, eflags));
|
|
tcg_gen_andi_tl(t, t, ~mask);
|
|
tcg_gen_st_tl(t, cpu_env, offsetof(CPUX86State, eflags));
|
|
tcg_temp_free(t);
|
|
}
|
|
|
|
/* Clear BND registers during legacy branches. */
|
|
static void gen_bnd_jmp(DisasContext *s)
|
|
{
|
|
/* Clear the registers only if BND prefix is missing, MPX is enabled,
|
|
and if the BNDREGs are known to be in use (non-zero) already.
|
|
The helper itself will check BNDPRESERVE at runtime. */
|
|
if ((s->prefix & PREFIX_REPNZ) == 0
|
|
&& (s->flags & HF_MPX_EN_MASK) != 0
|
|
&& (s->flags & HF_MPX_IU_MASK) != 0) {
|
|
gen_helper_bnd_jmp(cpu_env);
|
|
}
|
|
}
|
|
|
|
/* Generate an end of block. Trace exception is also generated if needed.
|
|
If INHIBIT, set HF_INHIBIT_IRQ_MASK if it isn't already set.
|
|
If RECHECK_TF, emit a rechecking helper for #DB, ignoring the state of
|
|
S->TF. This is used by the syscall/sysret insns. */
|
|
static void
|
|
do_gen_eob_worker(DisasContext *s, bool inhibit, bool recheck_tf, bool jr)
|
|
{
|
|
gen_update_cc_op(s);
|
|
|
|
/* If several instructions disable interrupts, only the first does it. */
|
|
if (inhibit && !(s->flags & HF_INHIBIT_IRQ_MASK)) {
|
|
gen_set_hflag(s, HF_INHIBIT_IRQ_MASK);
|
|
} else {
|
|
gen_reset_hflag(s, HF_INHIBIT_IRQ_MASK);
|
|
}
|
|
|
|
if (s->base.tb->flags & HF_RF_MASK) {
|
|
gen_reset_eflags(s, RF_MASK);
|
|
}
|
|
if (recheck_tf) {
|
|
gen_helper_rechecking_single_step(cpu_env);
|
|
tcg_gen_exit_tb(NULL, 0);
|
|
} else if (s->flags & HF_TF_MASK) {
|
|
gen_helper_single_step(cpu_env);
|
|
} else if (jr) {
|
|
tcg_gen_lookup_and_goto_ptr();
|
|
} else {
|
|
tcg_gen_exit_tb(NULL, 0);
|
|
}
|
|
s->base.is_jmp = DISAS_NORETURN;
|
|
}
|
|
|
|
static inline void
|
|
gen_eob_worker(DisasContext *s, bool inhibit, bool recheck_tf)
|
|
{
|
|
do_gen_eob_worker(s, inhibit, recheck_tf, false);
|
|
}
|
|
|
|
/* End of block.
|
|
If INHIBIT, set HF_INHIBIT_IRQ_MASK if it isn't already set. */
|
|
static void gen_eob_inhibit_irq(DisasContext *s, bool inhibit)
|
|
{
|
|
gen_eob_worker(s, inhibit, false);
|
|
}
|
|
|
|
/* End of block, resetting the inhibit irq flag. */
|
|
static void gen_eob(DisasContext *s)
|
|
{
|
|
gen_eob_worker(s, false, false);
|
|
}
|
|
|
|
/* Jump to register */
|
|
static void gen_jr(DisasContext *s)
|
|
{
|
|
do_gen_eob_worker(s, false, false, true);
|
|
}
|
|
|
|
/* Jump to eip+diff, truncating the result to OT. */
|
|
static void gen_jmp_rel(DisasContext *s, MemOp ot, int diff, int tb_num)
|
|
{
|
|
bool use_goto_tb = s->jmp_opt;
|
|
target_ulong mask = -1;
|
|
target_ulong new_pc = s->pc + diff;
|
|
target_ulong new_eip = new_pc - s->cs_base;
|
|
|
|
/* In 64-bit mode, operand size is fixed at 64 bits. */
|
|
if (!CODE64(s)) {
|
|
if (ot == MO_16) {
|
|
mask = 0xffff;
|
|
if (TARGET_TB_PCREL && CODE32(s)) {
|
|
use_goto_tb = false;
|
|
}
|
|
} else {
|
|
mask = 0xffffffff;
|
|
}
|
|
}
|
|
new_eip &= mask;
|
|
|
|
gen_update_cc_op(s);
|
|
set_cc_op(s, CC_OP_DYNAMIC);
|
|
|
|
if (TARGET_TB_PCREL) {
|
|
tcg_gen_addi_tl(cpu_eip, cpu_eip, new_pc - s->pc_save);
|
|
/*
|
|
* If we can prove the branch does not leave the page and we have
|
|
* no extra masking to apply (data16 branch in code32, see above),
|
|
* then we have also proven that the addition does not wrap.
|
|
*/
|
|
if (!use_goto_tb || !is_same_page(&s->base, new_pc)) {
|
|
tcg_gen_andi_tl(cpu_eip, cpu_eip, mask);
|
|
use_goto_tb = false;
|
|
}
|
|
}
|
|
|
|
if (use_goto_tb &&
|
|
translator_use_goto_tb(&s->base, new_eip + s->cs_base)) {
|
|
/* jump to same page: we can use a direct jump */
|
|
tcg_gen_goto_tb(tb_num);
|
|
if (!TARGET_TB_PCREL) {
|
|
tcg_gen_movi_tl(cpu_eip, new_eip);
|
|
}
|
|
tcg_gen_exit_tb(s->base.tb, tb_num);
|
|
s->base.is_jmp = DISAS_NORETURN;
|
|
} else {
|
|
if (!TARGET_TB_PCREL) {
|
|
tcg_gen_movi_tl(cpu_eip, new_eip);
|
|
}
|
|
if (s->jmp_opt) {
|
|
gen_jr(s); /* jump to another page */
|
|
} else {
|
|
gen_eob(s); /* exit to main loop */
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Jump to eip+diff, truncating to the current code size. */
|
|
static void gen_jmp_rel_csize(DisasContext *s, int diff, int tb_num)
|
|
{
|
|
/* CODE64 ignores the OT argument, so we need not consider it. */
|
|
gen_jmp_rel(s, CODE32(s) ? MO_32 : MO_16, diff, tb_num);
|
|
}
|
|
|
|
static inline void gen_ldq_env_A0(DisasContext *s, int offset)
|
|
{
|
|
tcg_gen_qemu_ld_i64(s->tmp1_i64, s->A0, s->mem_index, MO_LEUQ);
|
|
tcg_gen_st_i64(s->tmp1_i64, cpu_env, offset);
|
|
}
|
|
|
|
static inline void gen_stq_env_A0(DisasContext *s, int offset)
|
|
{
|
|
tcg_gen_ld_i64(s->tmp1_i64, cpu_env, offset);
|
|
tcg_gen_qemu_st_i64(s->tmp1_i64, s->A0, s->mem_index, MO_LEUQ);
|
|
}
|
|
|
|
static inline void gen_ldo_env_A0(DisasContext *s, int offset, bool align)
|
|
{
|
|
int mem_index = s->mem_index;
|
|
tcg_gen_qemu_ld_i64(s->tmp1_i64, s->A0, mem_index,
|
|
MO_LEUQ | (align ? MO_ALIGN_16 : 0));
|
|
tcg_gen_st_i64(s->tmp1_i64, cpu_env, offset + offsetof(XMMReg, XMM_Q(0)));
|
|
tcg_gen_addi_tl(s->tmp0, s->A0, 8);
|
|
tcg_gen_qemu_ld_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
|
|
tcg_gen_st_i64(s->tmp1_i64, cpu_env, offset + offsetof(XMMReg, XMM_Q(1)));
|
|
}
|
|
|
|
static inline void gen_sto_env_A0(DisasContext *s, int offset, bool align)
|
|
{
|
|
int mem_index = s->mem_index;
|
|
tcg_gen_ld_i64(s->tmp1_i64, cpu_env, offset + offsetof(XMMReg, XMM_Q(0)));
|
|
tcg_gen_qemu_st_i64(s->tmp1_i64, s->A0, mem_index,
|
|
MO_LEUQ | (align ? MO_ALIGN_16 : 0));
|
|
tcg_gen_addi_tl(s->tmp0, s->A0, 8);
|
|
tcg_gen_ld_i64(s->tmp1_i64, cpu_env, offset + offsetof(XMMReg, XMM_Q(1)));
|
|
tcg_gen_qemu_st_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
|
|
}
|
|
|
|
static void gen_ldy_env_A0(DisasContext *s, int offset, bool align)
|
|
{
|
|
int mem_index = s->mem_index;
|
|
tcg_gen_qemu_ld_i64(s->tmp1_i64, s->A0, mem_index,
|
|
MO_LEUQ | (align ? MO_ALIGN_32 : 0));
|
|
tcg_gen_st_i64(s->tmp1_i64, cpu_env, offset + offsetof(YMMReg, YMM_Q(0)));
|
|
tcg_gen_addi_tl(s->tmp0, s->A0, 8);
|
|
tcg_gen_qemu_ld_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
|
|
tcg_gen_st_i64(s->tmp1_i64, cpu_env, offset + offsetof(YMMReg, YMM_Q(1)));
|
|
|
|
tcg_gen_addi_tl(s->tmp0, s->A0, 16);
|
|
tcg_gen_qemu_ld_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
|
|
tcg_gen_st_i64(s->tmp1_i64, cpu_env, offset + offsetof(YMMReg, YMM_Q(2)));
|
|
tcg_gen_addi_tl(s->tmp0, s->A0, 24);
|
|
tcg_gen_qemu_ld_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
|
|
tcg_gen_st_i64(s->tmp1_i64, cpu_env, offset + offsetof(YMMReg, YMM_Q(3)));
|
|
}
|
|
|
|
static void gen_sty_env_A0(DisasContext *s, int offset, bool align)
|
|
{
|
|
int mem_index = s->mem_index;
|
|
tcg_gen_ld_i64(s->tmp1_i64, cpu_env, offset + offsetof(YMMReg, YMM_Q(0)));
|
|
tcg_gen_qemu_st_i64(s->tmp1_i64, s->A0, mem_index,
|
|
MO_LEUQ | (align ? MO_ALIGN_32 : 0));
|
|
tcg_gen_addi_tl(s->tmp0, s->A0, 8);
|
|
tcg_gen_ld_i64(s->tmp1_i64, cpu_env, offset + offsetof(YMMReg, YMM_Q(1)));
|
|
tcg_gen_qemu_st_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
|
|
tcg_gen_addi_tl(s->tmp0, s->A0, 16);
|
|
tcg_gen_ld_i64(s->tmp1_i64, cpu_env, offset + offsetof(YMMReg, YMM_Q(2)));
|
|
tcg_gen_qemu_st_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
|
|
tcg_gen_addi_tl(s->tmp0, s->A0, 24);
|
|
tcg_gen_ld_i64(s->tmp1_i64, cpu_env, offset + offsetof(YMMReg, YMM_Q(3)));
|
|
tcg_gen_qemu_st_i64(s->tmp1_i64, s->tmp0, mem_index, MO_LEUQ);
|
|
}
|
|
|
|
#include "decode-new.h"
|
|
#include "emit.c.inc"
|
|
#include "decode-new.c.inc"
|
|
|
|
/* convert one instruction. s->base.is_jmp is set if the translation must
|
|
be stopped. Return the next pc value */
|
|
static bool disas_insn(DisasContext *s, CPUState *cpu)
|
|
{
|
|
CPUX86State *env = cpu->env_ptr;
|
|
int b, prefixes;
|
|
int shift;
|
|
MemOp ot, aflag, dflag;
|
|
int modrm, reg, rm, mod, op, opreg, val;
|
|
bool orig_cc_op_dirty = s->cc_op_dirty;
|
|
CCOp orig_cc_op = s->cc_op;
|
|
target_ulong orig_pc_save = s->pc_save;
|
|
|
|
s->pc = s->base.pc_next;
|
|
s->override = -1;
|
|
#ifdef TARGET_X86_64
|
|
s->rex_r = 0;
|
|
s->rex_x = 0;
|
|
s->rex_b = 0;
|
|
#endif
|
|
s->rip_offset = 0; /* for relative ip address */
|
|
s->vex_l = 0;
|
|
s->vex_v = 0;
|
|
s->vex_w = false;
|
|
switch (sigsetjmp(s->jmpbuf, 0)) {
|
|
case 0:
|
|
break;
|
|
case 1:
|
|
gen_exception_gpf(s);
|
|
return true;
|
|
case 2:
|
|
/* Restore state that may affect the next instruction. */
|
|
s->pc = s->base.pc_next;
|
|
/*
|
|
* TODO: These save/restore can be removed after the table-based
|
|
* decoder is complete; we will be decoding the insn completely
|
|
* before any code generation that might affect these variables.
|
|
*/
|
|
s->cc_op_dirty = orig_cc_op_dirty;
|
|
s->cc_op = orig_cc_op;
|
|
s->pc_save = orig_pc_save;
|
|
/* END TODO */
|
|
s->base.num_insns--;
|
|
tcg_remove_ops_after(s->prev_insn_end);
|
|
s->base.is_jmp = DISAS_TOO_MANY;
|
|
return false;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
|
|
prefixes = 0;
|
|
|
|
next_byte:
|
|
s->prefix = prefixes;
|
|
b = x86_ldub_code(env, s);
|
|
/* Collect prefixes. */
|
|
switch (b) {
|
|
default:
|
|
break;
|
|
case 0x0f:
|
|
b = x86_ldub_code(env, s) + 0x100;
|
|
break;
|
|
case 0xf3:
|
|
prefixes |= PREFIX_REPZ;
|
|
prefixes &= ~PREFIX_REPNZ;
|
|
goto next_byte;
|
|
case 0xf2:
|
|
prefixes |= PREFIX_REPNZ;
|
|
prefixes &= ~PREFIX_REPZ;
|
|
goto next_byte;
|
|
case 0xf0:
|
|
prefixes |= PREFIX_LOCK;
|
|
goto next_byte;
|
|
case 0x2e:
|
|
s->override = R_CS;
|
|
goto next_byte;
|
|
case 0x36:
|
|
s->override = R_SS;
|
|
goto next_byte;
|
|
case 0x3e:
|
|
s->override = R_DS;
|
|
goto next_byte;
|
|
case 0x26:
|
|
s->override = R_ES;
|
|
goto next_byte;
|
|
case 0x64:
|
|
s->override = R_FS;
|
|
goto next_byte;
|
|
case 0x65:
|
|
s->override = R_GS;
|
|
goto next_byte;
|
|
case 0x66:
|
|
prefixes |= PREFIX_DATA;
|
|
goto next_byte;
|
|
case 0x67:
|
|
prefixes |= PREFIX_ADR;
|
|
goto next_byte;
|
|
#ifdef TARGET_X86_64
|
|
case 0x40 ... 0x4f:
|
|
if (CODE64(s)) {
|
|
/* REX prefix */
|
|
prefixes |= PREFIX_REX;
|
|
s->vex_w = (b >> 3) & 1;
|
|
s->rex_r = (b & 0x4) << 1;
|
|
s->rex_x = (b & 0x2) << 2;
|
|
s->rex_b = (b & 0x1) << 3;
|
|
goto next_byte;
|
|
}
|
|
break;
|
|
#endif
|
|
case 0xc5: /* 2-byte VEX */
|
|
case 0xc4: /* 3-byte VEX */
|
|
if (CODE32(s) && !VM86(s)) {
|
|
int vex2 = x86_ldub_code(env, s);
|
|
s->pc--; /* rewind the advance_pc() x86_ldub_code() did */
|
|
|
|
if (!CODE64(s) && (vex2 & 0xc0) != 0xc0) {
|
|
/* 4.1.4.6: In 32-bit mode, bits [7:6] must be 11b,
|
|
otherwise the instruction is LES or LDS. */
|
|
break;
|
|
}
|
|
disas_insn_new(s, cpu, b);
|
|
return s->pc;
|
|
}
|
|
break;
|
|
}
|
|
|
|
/* Post-process prefixes. */
|
|
if (CODE64(s)) {
|
|
/* In 64-bit mode, the default data size is 32-bit. Select 64-bit
|
|
data with rex_w, and 16-bit data with 0x66; rex_w takes precedence
|
|
over 0x66 if both are present. */
|
|
dflag = (REX_W(s) ? MO_64 : prefixes & PREFIX_DATA ? MO_16 : MO_32);
|
|
/* In 64-bit mode, 0x67 selects 32-bit addressing. */
|
|
aflag = (prefixes & PREFIX_ADR ? MO_32 : MO_64);
|
|
} else {
|
|
/* In 16/32-bit mode, 0x66 selects the opposite data size. */
|
|
if (CODE32(s) ^ ((prefixes & PREFIX_DATA) != 0)) {
|
|
dflag = MO_32;
|
|
} else {
|
|
dflag = MO_16;
|
|
}
|
|
/* In 16/32-bit mode, 0x67 selects the opposite addressing. */
|
|
if (CODE32(s) ^ ((prefixes & PREFIX_ADR) != 0)) {
|
|
aflag = MO_32;
|
|
} else {
|
|
aflag = MO_16;
|
|
}
|
|
}
|
|
|
|
s->prefix = prefixes;
|
|
s->aflag = aflag;
|
|
s->dflag = dflag;
|
|
|
|
/* now check op code */
|
|
switch (b) {
|
|
/**************************/
|
|
/* arith & logic */
|
|
case 0x00 ... 0x05:
|
|
case 0x08 ... 0x0d:
|
|
case 0x10 ... 0x15:
|
|
case 0x18 ... 0x1d:
|
|
case 0x20 ... 0x25:
|
|
case 0x28 ... 0x2d:
|
|
case 0x30 ... 0x35:
|
|
case 0x38 ... 0x3d:
|
|
{
|
|
int op, f, val;
|
|
op = (b >> 3) & 7;
|
|
f = (b >> 1) & 3;
|
|
|
|
ot = mo_b_d(b, dflag);
|
|
|
|
switch(f) {
|
|
case 0: /* OP Ev, Gv */
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
mod = (modrm >> 6) & 3;
|
|
rm = (modrm & 7) | REX_B(s);
|
|
if (mod != 3) {
|
|
gen_lea_modrm(env, s, modrm);
|
|
opreg = OR_TMP0;
|
|
} else if (op == OP_XORL && rm == reg) {
|
|
xor_zero:
|
|
/* xor reg, reg optimisation */
|
|
set_cc_op(s, CC_OP_CLR);
|
|
tcg_gen_movi_tl(s->T0, 0);
|
|
gen_op_mov_reg_v(s, ot, reg, s->T0);
|
|
break;
|
|
} else {
|
|
opreg = rm;
|
|
}
|
|
gen_op_mov_v_reg(s, ot, s->T1, reg);
|
|
gen_op(s, op, ot, opreg);
|
|
break;
|
|
case 1: /* OP Gv, Ev */
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
rm = (modrm & 7) | REX_B(s);
|
|
if (mod != 3) {
|
|
gen_lea_modrm(env, s, modrm);
|
|
gen_op_ld_v(s, ot, s->T1, s->A0);
|
|
} else if (op == OP_XORL && rm == reg) {
|
|
goto xor_zero;
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T1, rm);
|
|
}
|
|
gen_op(s, op, ot, reg);
|
|
break;
|
|
case 2: /* OP A, Iv */
|
|
val = insn_get(env, s, ot);
|
|
tcg_gen_movi_tl(s->T1, val);
|
|
gen_op(s, op, ot, OR_EAX);
|
|
break;
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 0x82:
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
/* fall through */
|
|
case 0x80: /* GRP1 */
|
|
case 0x81:
|
|
case 0x83:
|
|
{
|
|
int val;
|
|
|
|
ot = mo_b_d(b, dflag);
|
|
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
rm = (modrm & 7) | REX_B(s);
|
|
op = (modrm >> 3) & 7;
|
|
|
|
if (mod != 3) {
|
|
if (b == 0x83)
|
|
s->rip_offset = 1;
|
|
else
|
|
s->rip_offset = insn_const_size(ot);
|
|
gen_lea_modrm(env, s, modrm);
|
|
opreg = OR_TMP0;
|
|
} else {
|
|
opreg = rm;
|
|
}
|
|
|
|
switch(b) {
|
|
default:
|
|
case 0x80:
|
|
case 0x81:
|
|
case 0x82:
|
|
val = insn_get(env, s, ot);
|
|
break;
|
|
case 0x83:
|
|
val = (int8_t)insn_get(env, s, MO_8);
|
|
break;
|
|
}
|
|
tcg_gen_movi_tl(s->T1, val);
|
|
gen_op(s, op, ot, opreg);
|
|
}
|
|
break;
|
|
|
|
/**************************/
|
|
/* inc, dec, and other misc arith */
|
|
case 0x40 ... 0x47: /* inc Gv */
|
|
ot = dflag;
|
|
gen_inc(s, ot, OR_EAX + (b & 7), 1);
|
|
break;
|
|
case 0x48 ... 0x4f: /* dec Gv */
|
|
ot = dflag;
|
|
gen_inc(s, ot, OR_EAX + (b & 7), -1);
|
|
break;
|
|
case 0xf6: /* GRP3 */
|
|
case 0xf7:
|
|
ot = mo_b_d(b, dflag);
|
|
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
rm = (modrm & 7) | REX_B(s);
|
|
op = (modrm >> 3) & 7;
|
|
if (mod != 3) {
|
|
if (op == 0) {
|
|
s->rip_offset = insn_const_size(ot);
|
|
}
|
|
gen_lea_modrm(env, s, modrm);
|
|
/* For those below that handle locked memory, don't load here. */
|
|
if (!(s->prefix & PREFIX_LOCK)
|
|
|| op != 2) {
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
}
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T0, rm);
|
|
}
|
|
|
|
switch(op) {
|
|
case 0: /* test */
|
|
val = insn_get(env, s, ot);
|
|
tcg_gen_movi_tl(s->T1, val);
|
|
gen_op_testl_T0_T1_cc(s);
|
|
set_cc_op(s, CC_OP_LOGICB + ot);
|
|
break;
|
|
case 2: /* not */
|
|
if (s->prefix & PREFIX_LOCK) {
|
|
if (mod == 3) {
|
|
goto illegal_op;
|
|
}
|
|
tcg_gen_movi_tl(s->T0, ~0);
|
|
tcg_gen_atomic_xor_fetch_tl(s->T0, s->A0, s->T0,
|
|
s->mem_index, ot | MO_LE);
|
|
} else {
|
|
tcg_gen_not_tl(s->T0, s->T0);
|
|
if (mod != 3) {
|
|
gen_op_st_v(s, ot, s->T0, s->A0);
|
|
} else {
|
|
gen_op_mov_reg_v(s, ot, rm, s->T0);
|
|
}
|
|
}
|
|
break;
|
|
case 3: /* neg */
|
|
if (s->prefix & PREFIX_LOCK) {
|
|
TCGLabel *label1;
|
|
TCGv a0, t0, t1, t2;
|
|
|
|
if (mod == 3) {
|
|
goto illegal_op;
|
|
}
|
|
a0 = tcg_temp_local_new();
|
|
t0 = tcg_temp_local_new();
|
|
label1 = gen_new_label();
|
|
|
|
tcg_gen_mov_tl(a0, s->A0);
|
|
tcg_gen_mov_tl(t0, s->T0);
|
|
|
|
gen_set_label(label1);
|
|
t1 = tcg_temp_new();
|
|
t2 = tcg_temp_new();
|
|
tcg_gen_mov_tl(t2, t0);
|
|
tcg_gen_neg_tl(t1, t0);
|
|
tcg_gen_atomic_cmpxchg_tl(t0, a0, t0, t1,
|
|
s->mem_index, ot | MO_LE);
|
|
tcg_temp_free(t1);
|
|
tcg_gen_brcond_tl(TCG_COND_NE, t0, t2, label1);
|
|
|
|
tcg_temp_free(t2);
|
|
tcg_temp_free(a0);
|
|
tcg_gen_neg_tl(s->T0, t0);
|
|
tcg_temp_free(t0);
|
|
} else {
|
|
tcg_gen_neg_tl(s->T0, s->T0);
|
|
if (mod != 3) {
|
|
gen_op_st_v(s, ot, s->T0, s->A0);
|
|
} else {
|
|
gen_op_mov_reg_v(s, ot, rm, s->T0);
|
|
}
|
|
}
|
|
gen_op_update_neg_cc(s);
|
|
set_cc_op(s, CC_OP_SUBB + ot);
|
|
break;
|
|
case 4: /* mul */
|
|
switch(ot) {
|
|
case MO_8:
|
|
gen_op_mov_v_reg(s, MO_8, s->T1, R_EAX);
|
|
tcg_gen_ext8u_tl(s->T0, s->T0);
|
|
tcg_gen_ext8u_tl(s->T1, s->T1);
|
|
/* XXX: use 32 bit mul which could be faster */
|
|
tcg_gen_mul_tl(s->T0, s->T0, s->T1);
|
|
gen_op_mov_reg_v(s, MO_16, R_EAX, s->T0);
|
|
tcg_gen_mov_tl(cpu_cc_dst, s->T0);
|
|
tcg_gen_andi_tl(cpu_cc_src, s->T0, 0xff00);
|
|
set_cc_op(s, CC_OP_MULB);
|
|
break;
|
|
case MO_16:
|
|
gen_op_mov_v_reg(s, MO_16, s->T1, R_EAX);
|
|
tcg_gen_ext16u_tl(s->T0, s->T0);
|
|
tcg_gen_ext16u_tl(s->T1, s->T1);
|
|
/* XXX: use 32 bit mul which could be faster */
|
|
tcg_gen_mul_tl(s->T0, s->T0, s->T1);
|
|
gen_op_mov_reg_v(s, MO_16, R_EAX, s->T0);
|
|
tcg_gen_mov_tl(cpu_cc_dst, s->T0);
|
|
tcg_gen_shri_tl(s->T0, s->T0, 16);
|
|
gen_op_mov_reg_v(s, MO_16, R_EDX, s->T0);
|
|
tcg_gen_mov_tl(cpu_cc_src, s->T0);
|
|
set_cc_op(s, CC_OP_MULW);
|
|
break;
|
|
default:
|
|
case MO_32:
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0);
|
|
tcg_gen_trunc_tl_i32(s->tmp3_i32, cpu_regs[R_EAX]);
|
|
tcg_gen_mulu2_i32(s->tmp2_i32, s->tmp3_i32,
|
|
s->tmp2_i32, s->tmp3_i32);
|
|
tcg_gen_extu_i32_tl(cpu_regs[R_EAX], s->tmp2_i32);
|
|
tcg_gen_extu_i32_tl(cpu_regs[R_EDX], s->tmp3_i32);
|
|
tcg_gen_mov_tl(cpu_cc_dst, cpu_regs[R_EAX]);
|
|
tcg_gen_mov_tl(cpu_cc_src, cpu_regs[R_EDX]);
|
|
set_cc_op(s, CC_OP_MULL);
|
|
break;
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
tcg_gen_mulu2_i64(cpu_regs[R_EAX], cpu_regs[R_EDX],
|
|
s->T0, cpu_regs[R_EAX]);
|
|
tcg_gen_mov_tl(cpu_cc_dst, cpu_regs[R_EAX]);
|
|
tcg_gen_mov_tl(cpu_cc_src, cpu_regs[R_EDX]);
|
|
set_cc_op(s, CC_OP_MULQ);
|
|
break;
|
|
#endif
|
|
}
|
|
break;
|
|
case 5: /* imul */
|
|
switch(ot) {
|
|
case MO_8:
|
|
gen_op_mov_v_reg(s, MO_8, s->T1, R_EAX);
|
|
tcg_gen_ext8s_tl(s->T0, s->T0);
|
|
tcg_gen_ext8s_tl(s->T1, s->T1);
|
|
/* XXX: use 32 bit mul which could be faster */
|
|
tcg_gen_mul_tl(s->T0, s->T0, s->T1);
|
|
gen_op_mov_reg_v(s, MO_16, R_EAX, s->T0);
|
|
tcg_gen_mov_tl(cpu_cc_dst, s->T0);
|
|
tcg_gen_ext8s_tl(s->tmp0, s->T0);
|
|
tcg_gen_sub_tl(cpu_cc_src, s->T0, s->tmp0);
|
|
set_cc_op(s, CC_OP_MULB);
|
|
break;
|
|
case MO_16:
|
|
gen_op_mov_v_reg(s, MO_16, s->T1, R_EAX);
|
|
tcg_gen_ext16s_tl(s->T0, s->T0);
|
|
tcg_gen_ext16s_tl(s->T1, s->T1);
|
|
/* XXX: use 32 bit mul which could be faster */
|
|
tcg_gen_mul_tl(s->T0, s->T0, s->T1);
|
|
gen_op_mov_reg_v(s, MO_16, R_EAX, s->T0);
|
|
tcg_gen_mov_tl(cpu_cc_dst, s->T0);
|
|
tcg_gen_ext16s_tl(s->tmp0, s->T0);
|
|
tcg_gen_sub_tl(cpu_cc_src, s->T0, s->tmp0);
|
|
tcg_gen_shri_tl(s->T0, s->T0, 16);
|
|
gen_op_mov_reg_v(s, MO_16, R_EDX, s->T0);
|
|
set_cc_op(s, CC_OP_MULW);
|
|
break;
|
|
default:
|
|
case MO_32:
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0);
|
|
tcg_gen_trunc_tl_i32(s->tmp3_i32, cpu_regs[R_EAX]);
|
|
tcg_gen_muls2_i32(s->tmp2_i32, s->tmp3_i32,
|
|
s->tmp2_i32, s->tmp3_i32);
|
|
tcg_gen_extu_i32_tl(cpu_regs[R_EAX], s->tmp2_i32);
|
|
tcg_gen_extu_i32_tl(cpu_regs[R_EDX], s->tmp3_i32);
|
|
tcg_gen_sari_i32(s->tmp2_i32, s->tmp2_i32, 31);
|
|
tcg_gen_mov_tl(cpu_cc_dst, cpu_regs[R_EAX]);
|
|
tcg_gen_sub_i32(s->tmp2_i32, s->tmp2_i32, s->tmp3_i32);
|
|
tcg_gen_extu_i32_tl(cpu_cc_src, s->tmp2_i32);
|
|
set_cc_op(s, CC_OP_MULL);
|
|
break;
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
tcg_gen_muls2_i64(cpu_regs[R_EAX], cpu_regs[R_EDX],
|
|
s->T0, cpu_regs[R_EAX]);
|
|
tcg_gen_mov_tl(cpu_cc_dst, cpu_regs[R_EAX]);
|
|
tcg_gen_sari_tl(cpu_cc_src, cpu_regs[R_EAX], 63);
|
|
tcg_gen_sub_tl(cpu_cc_src, cpu_cc_src, cpu_regs[R_EDX]);
|
|
set_cc_op(s, CC_OP_MULQ);
|
|
break;
|
|
#endif
|
|
}
|
|
break;
|
|
case 6: /* div */
|
|
switch(ot) {
|
|
case MO_8:
|
|
gen_helper_divb_AL(cpu_env, s->T0);
|
|
break;
|
|
case MO_16:
|
|
gen_helper_divw_AX(cpu_env, s->T0);
|
|
break;
|
|
default:
|
|
case MO_32:
|
|
gen_helper_divl_EAX(cpu_env, s->T0);
|
|
break;
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
gen_helper_divq_EAX(cpu_env, s->T0);
|
|
break;
|
|
#endif
|
|
}
|
|
break;
|
|
case 7: /* idiv */
|
|
switch(ot) {
|
|
case MO_8:
|
|
gen_helper_idivb_AL(cpu_env, s->T0);
|
|
break;
|
|
case MO_16:
|
|
gen_helper_idivw_AX(cpu_env, s->T0);
|
|
break;
|
|
default:
|
|
case MO_32:
|
|
gen_helper_idivl_EAX(cpu_env, s->T0);
|
|
break;
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
gen_helper_idivq_EAX(cpu_env, s->T0);
|
|
break;
|
|
#endif
|
|
}
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
break;
|
|
|
|
case 0xfe: /* GRP4 */
|
|
case 0xff: /* GRP5 */
|
|
ot = mo_b_d(b, dflag);
|
|
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
rm = (modrm & 7) | REX_B(s);
|
|
op = (modrm >> 3) & 7;
|
|
if (op >= 2 && b == 0xfe) {
|
|
goto unknown_op;
|
|
}
|
|
if (CODE64(s)) {
|
|
if (op == 2 || op == 4) {
|
|
/* operand size for jumps is 64 bit */
|
|
ot = MO_64;
|
|
} else if (op == 3 || op == 5) {
|
|
ot = dflag != MO_16 ? MO_32 + REX_W(s) : MO_16;
|
|
} else if (op == 6) {
|
|
/* default push size is 64 bit */
|
|
ot = mo_pushpop(s, dflag);
|
|
}
|
|
}
|
|
if (mod != 3) {
|
|
gen_lea_modrm(env, s, modrm);
|
|
if (op >= 2 && op != 3 && op != 5)
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T0, rm);
|
|
}
|
|
|
|
switch(op) {
|
|
case 0: /* inc Ev */
|
|
if (mod != 3)
|
|
opreg = OR_TMP0;
|
|
else
|
|
opreg = rm;
|
|
gen_inc(s, ot, opreg, 1);
|
|
break;
|
|
case 1: /* dec Ev */
|
|
if (mod != 3)
|
|
opreg = OR_TMP0;
|
|
else
|
|
opreg = rm;
|
|
gen_inc(s, ot, opreg, -1);
|
|
break;
|
|
case 2: /* call Ev */
|
|
/* XXX: optimize if memory (no 'and' is necessary) */
|
|
if (dflag == MO_16) {
|
|
tcg_gen_ext16u_tl(s->T0, s->T0);
|
|
}
|
|
gen_push_v(s, eip_next_tl(s));
|
|
gen_op_jmp_v(s, s->T0);
|
|
gen_bnd_jmp(s);
|
|
s->base.is_jmp = DISAS_JUMP;
|
|
break;
|
|
case 3: /* lcall Ev */
|
|
if (mod == 3) {
|
|
goto illegal_op;
|
|
}
|
|
gen_op_ld_v(s, ot, s->T1, s->A0);
|
|
gen_add_A0_im(s, 1 << ot);
|
|
gen_op_ld_v(s, MO_16, s->T0, s->A0);
|
|
do_lcall:
|
|
if (PE(s) && !VM86(s)) {
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0);
|
|
gen_helper_lcall_protected(cpu_env, s->tmp2_i32, s->T1,
|
|
tcg_constant_i32(dflag - 1),
|
|
eip_next_tl(s));
|
|
} else {
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0);
|
|
tcg_gen_trunc_tl_i32(s->tmp3_i32, s->T1);
|
|
gen_helper_lcall_real(cpu_env, s->tmp2_i32, s->tmp3_i32,
|
|
tcg_constant_i32(dflag - 1),
|
|
eip_next_i32(s));
|
|
}
|
|
s->base.is_jmp = DISAS_JUMP;
|
|
break;
|
|
case 4: /* jmp Ev */
|
|
if (dflag == MO_16) {
|
|
tcg_gen_ext16u_tl(s->T0, s->T0);
|
|
}
|
|
gen_op_jmp_v(s, s->T0);
|
|
gen_bnd_jmp(s);
|
|
s->base.is_jmp = DISAS_JUMP;
|
|
break;
|
|
case 5: /* ljmp Ev */
|
|
if (mod == 3) {
|
|
goto illegal_op;
|
|
}
|
|
gen_op_ld_v(s, ot, s->T1, s->A0);
|
|
gen_add_A0_im(s, 1 << ot);
|
|
gen_op_ld_v(s, MO_16, s->T0, s->A0);
|
|
do_ljmp:
|
|
if (PE(s) && !VM86(s)) {
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0);
|
|
gen_helper_ljmp_protected(cpu_env, s->tmp2_i32, s->T1,
|
|
eip_next_tl(s));
|
|
} else {
|
|
gen_op_movl_seg_T0_vm(s, R_CS);
|
|
gen_op_jmp_v(s, s->T1);
|
|
}
|
|
s->base.is_jmp = DISAS_JUMP;
|
|
break;
|
|
case 6: /* push Ev */
|
|
gen_push_v(s, s->T0);
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
break;
|
|
|
|
case 0x84: /* test Ev, Gv */
|
|
case 0x85:
|
|
ot = mo_b_d(b, dflag);
|
|
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
|
|
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
|
|
gen_op_mov_v_reg(s, ot, s->T1, reg);
|
|
gen_op_testl_T0_T1_cc(s);
|
|
set_cc_op(s, CC_OP_LOGICB + ot);
|
|
break;
|
|
|
|
case 0xa8: /* test eAX, Iv */
|
|
case 0xa9:
|
|
ot = mo_b_d(b, dflag);
|
|
val = insn_get(env, s, ot);
|
|
|
|
gen_op_mov_v_reg(s, ot, s->T0, OR_EAX);
|
|
tcg_gen_movi_tl(s->T1, val);
|
|
gen_op_testl_T0_T1_cc(s);
|
|
set_cc_op(s, CC_OP_LOGICB + ot);
|
|
break;
|
|
|
|
case 0x98: /* CWDE/CBW */
|
|
switch (dflag) {
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
gen_op_mov_v_reg(s, MO_32, s->T0, R_EAX);
|
|
tcg_gen_ext32s_tl(s->T0, s->T0);
|
|
gen_op_mov_reg_v(s, MO_64, R_EAX, s->T0);
|
|
break;
|
|
#endif
|
|
case MO_32:
|
|
gen_op_mov_v_reg(s, MO_16, s->T0, R_EAX);
|
|
tcg_gen_ext16s_tl(s->T0, s->T0);
|
|
gen_op_mov_reg_v(s, MO_32, R_EAX, s->T0);
|
|
break;
|
|
case MO_16:
|
|
gen_op_mov_v_reg(s, MO_8, s->T0, R_EAX);
|
|
tcg_gen_ext8s_tl(s->T0, s->T0);
|
|
gen_op_mov_reg_v(s, MO_16, R_EAX, s->T0);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
break;
|
|
case 0x99: /* CDQ/CWD */
|
|
switch (dflag) {
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
gen_op_mov_v_reg(s, MO_64, s->T0, R_EAX);
|
|
tcg_gen_sari_tl(s->T0, s->T0, 63);
|
|
gen_op_mov_reg_v(s, MO_64, R_EDX, s->T0);
|
|
break;
|
|
#endif
|
|
case MO_32:
|
|
gen_op_mov_v_reg(s, MO_32, s->T0, R_EAX);
|
|
tcg_gen_ext32s_tl(s->T0, s->T0);
|
|
tcg_gen_sari_tl(s->T0, s->T0, 31);
|
|
gen_op_mov_reg_v(s, MO_32, R_EDX, s->T0);
|
|
break;
|
|
case MO_16:
|
|
gen_op_mov_v_reg(s, MO_16, s->T0, R_EAX);
|
|
tcg_gen_ext16s_tl(s->T0, s->T0);
|
|
tcg_gen_sari_tl(s->T0, s->T0, 15);
|
|
gen_op_mov_reg_v(s, MO_16, R_EDX, s->T0);
|
|
break;
|
|
default:
|
|
tcg_abort();
|
|
}
|
|
break;
|
|
case 0x1af: /* imul Gv, Ev */
|
|
case 0x69: /* imul Gv, Ev, I */
|
|
case 0x6b:
|
|
ot = dflag;
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
if (b == 0x69)
|
|
s->rip_offset = insn_const_size(ot);
|
|
else if (b == 0x6b)
|
|
s->rip_offset = 1;
|
|
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
|
|
if (b == 0x69) {
|
|
val = insn_get(env, s, ot);
|
|
tcg_gen_movi_tl(s->T1, val);
|
|
} else if (b == 0x6b) {
|
|
val = (int8_t)insn_get(env, s, MO_8);
|
|
tcg_gen_movi_tl(s->T1, val);
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T1, reg);
|
|
}
|
|
switch (ot) {
|
|
#ifdef TARGET_X86_64
|
|
case MO_64:
|
|
tcg_gen_muls2_i64(cpu_regs[reg], s->T1, s->T0, s->T1);
|
|
tcg_gen_mov_tl(cpu_cc_dst, cpu_regs[reg]);
|
|
tcg_gen_sari_tl(cpu_cc_src, cpu_cc_dst, 63);
|
|
tcg_gen_sub_tl(cpu_cc_src, cpu_cc_src, s->T1);
|
|
break;
|
|
#endif
|
|
case MO_32:
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0);
|
|
tcg_gen_trunc_tl_i32(s->tmp3_i32, s->T1);
|
|
tcg_gen_muls2_i32(s->tmp2_i32, s->tmp3_i32,
|
|
s->tmp2_i32, s->tmp3_i32);
|
|
tcg_gen_extu_i32_tl(cpu_regs[reg], s->tmp2_i32);
|
|
tcg_gen_sari_i32(s->tmp2_i32, s->tmp2_i32, 31);
|
|
tcg_gen_mov_tl(cpu_cc_dst, cpu_regs[reg]);
|
|
tcg_gen_sub_i32(s->tmp2_i32, s->tmp2_i32, s->tmp3_i32);
|
|
tcg_gen_extu_i32_tl(cpu_cc_src, s->tmp2_i32);
|
|
break;
|
|
default:
|
|
tcg_gen_ext16s_tl(s->T0, s->T0);
|
|
tcg_gen_ext16s_tl(s->T1, s->T1);
|
|
/* XXX: use 32 bit mul which could be faster */
|
|
tcg_gen_mul_tl(s->T0, s->T0, s->T1);
|
|
tcg_gen_mov_tl(cpu_cc_dst, s->T0);
|
|
tcg_gen_ext16s_tl(s->tmp0, s->T0);
|
|
tcg_gen_sub_tl(cpu_cc_src, s->T0, s->tmp0);
|
|
gen_op_mov_reg_v(s, ot, reg, s->T0);
|
|
break;
|
|
}
|
|
set_cc_op(s, CC_OP_MULB + ot);
|
|
break;
|
|
case 0x1c0:
|
|
case 0x1c1: /* xadd Ev, Gv */
|
|
ot = mo_b_d(b, dflag);
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
mod = (modrm >> 6) & 3;
|
|
gen_op_mov_v_reg(s, ot, s->T0, reg);
|
|
if (mod == 3) {
|
|
rm = (modrm & 7) | REX_B(s);
|
|
gen_op_mov_v_reg(s, ot, s->T1, rm);
|
|
tcg_gen_add_tl(s->T0, s->T0, s->T1);
|
|
gen_op_mov_reg_v(s, ot, reg, s->T1);
|
|
gen_op_mov_reg_v(s, ot, rm, s->T0);
|
|
} else {
|
|
gen_lea_modrm(env, s, modrm);
|
|
if (s->prefix & PREFIX_LOCK) {
|
|
tcg_gen_atomic_fetch_add_tl(s->T1, s->A0, s->T0,
|
|
s->mem_index, ot | MO_LE);
|
|
tcg_gen_add_tl(s->T0, s->T0, s->T1);
|
|
} else {
|
|
gen_op_ld_v(s, ot, s->T1, s->A0);
|
|
tcg_gen_add_tl(s->T0, s->T0, s->T1);
|
|
gen_op_st_v(s, ot, s->T0, s->A0);
|
|
}
|
|
gen_op_mov_reg_v(s, ot, reg, s->T1);
|
|
}
|
|
gen_op_update2_cc(s);
|
|
set_cc_op(s, CC_OP_ADDB + ot);
|
|
break;
|
|
case 0x1b0:
|
|
case 0x1b1: /* cmpxchg Ev, Gv */
|
|
{
|
|
TCGv oldv, newv, cmpv, dest;
|
|
|
|
ot = mo_b_d(b, dflag);
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
mod = (modrm >> 6) & 3;
|
|
oldv = tcg_temp_new();
|
|
newv = tcg_temp_new();
|
|
cmpv = tcg_temp_new();
|
|
gen_op_mov_v_reg(s, ot, newv, reg);
|
|
tcg_gen_mov_tl(cmpv, cpu_regs[R_EAX]);
|
|
gen_extu(ot, cmpv);
|
|
if (s->prefix & PREFIX_LOCK) {
|
|
if (mod == 3) {
|
|
goto illegal_op;
|
|
}
|
|
gen_lea_modrm(env, s, modrm);
|
|
tcg_gen_atomic_cmpxchg_tl(oldv, s->A0, cmpv, newv,
|
|
s->mem_index, ot | MO_LE);
|
|
} else {
|
|
if (mod == 3) {
|
|
rm = (modrm & 7) | REX_B(s);
|
|
gen_op_mov_v_reg(s, ot, oldv, rm);
|
|
gen_extu(ot, oldv);
|
|
|
|
/*
|
|
* Unlike the memory case, where "the destination operand receives
|
|
* a write cycle without regard to the result of the comparison",
|
|
* rm must not be touched altogether if the write fails, including
|
|
* not zero-extending it on 64-bit processors. So, precompute
|
|
* the result of a successful writeback and perform the movcond
|
|
* directly on cpu_regs. Also need to write accumulator first, in
|
|
* case rm is part of RAX too.
|
|
*/
|
|
dest = gen_op_deposit_reg_v(s, ot, rm, newv, newv);
|
|
tcg_gen_movcond_tl(TCG_COND_EQ, dest, oldv, cmpv, newv, dest);
|
|
} else {
|
|
gen_lea_modrm(env, s, modrm);
|
|
gen_op_ld_v(s, ot, oldv, s->A0);
|
|
|
|
/*
|
|
* Perform an unconditional store cycle like physical cpu;
|
|
* must be before changing accumulator to ensure
|
|
* idempotency if the store faults and the instruction
|
|
* is restarted
|
|
*/
|
|
tcg_gen_movcond_tl(TCG_COND_EQ, newv, oldv, cmpv, newv, oldv);
|
|
gen_op_st_v(s, ot, newv, s->A0);
|
|
}
|
|
}
|
|
/*
|
|
* Write EAX only if the cmpxchg fails; reuse newv as the destination,
|
|
* since it's dead here.
|
|
*/
|
|
dest = gen_op_deposit_reg_v(s, ot, R_EAX, newv, oldv);
|
|
tcg_gen_movcond_tl(TCG_COND_EQ, dest, oldv, cmpv, dest, newv);
|
|
tcg_gen_mov_tl(cpu_cc_src, oldv);
|
|
tcg_gen_mov_tl(s->cc_srcT, cmpv);
|
|
tcg_gen_sub_tl(cpu_cc_dst, cmpv, oldv);
|
|
set_cc_op(s, CC_OP_SUBB + ot);
|
|
tcg_temp_free(oldv);
|
|
tcg_temp_free(newv);
|
|
tcg_temp_free(cmpv);
|
|
}
|
|
break;
|
|
case 0x1c7: /* cmpxchg8b */
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
switch ((modrm >> 3) & 7) {
|
|
case 1: /* CMPXCHG8, CMPXCHG16 */
|
|
if (mod == 3) {
|
|
goto illegal_op;
|
|
}
|
|
#ifdef TARGET_X86_64
|
|
if (dflag == MO_64) {
|
|
if (!(s->cpuid_ext_features & CPUID_EXT_CX16)) {
|
|
goto illegal_op;
|
|
}
|
|
gen_lea_modrm(env, s, modrm);
|
|
if ((s->prefix & PREFIX_LOCK) &&
|
|
(tb_cflags(s->base.tb) & CF_PARALLEL)) {
|
|
gen_helper_cmpxchg16b(cpu_env, s->A0);
|
|
} else {
|
|
gen_helper_cmpxchg16b_unlocked(cpu_env, s->A0);
|
|
}
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
break;
|
|
}
|
|
#endif
|
|
if (!(s->cpuid_features & CPUID_CX8)) {
|
|
goto illegal_op;
|
|
}
|
|
gen_lea_modrm(env, s, modrm);
|
|
if ((s->prefix & PREFIX_LOCK) &&
|
|
(tb_cflags(s->base.tb) & CF_PARALLEL)) {
|
|
gen_helper_cmpxchg8b(cpu_env, s->A0);
|
|
} else {
|
|
gen_helper_cmpxchg8b_unlocked(cpu_env, s->A0);
|
|
}
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
break;
|
|
|
|
case 7: /* RDSEED */
|
|
case 6: /* RDRAND */
|
|
if (mod != 3 ||
|
|
(s->prefix & (PREFIX_LOCK | PREFIX_REPZ | PREFIX_REPNZ)) ||
|
|
!(s->cpuid_ext_features & CPUID_EXT_RDRAND)) {
|
|
goto illegal_op;
|
|
}
|
|
if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
|
|
gen_io_start();
|
|
s->base.is_jmp = DISAS_TOO_MANY;
|
|
}
|
|
gen_helper_rdrand(s->T0, cpu_env);
|
|
rm = (modrm & 7) | REX_B(s);
|
|
gen_op_mov_reg_v(s, dflag, rm, s->T0);
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
break;
|
|
|
|
default:
|
|
goto illegal_op;
|
|
}
|
|
break;
|
|
|
|
/**************************/
|
|
/* push/pop */
|
|
case 0x50 ... 0x57: /* push */
|
|
gen_op_mov_v_reg(s, MO_32, s->T0, (b & 7) | REX_B(s));
|
|
gen_push_v(s, s->T0);
|
|
break;
|
|
case 0x58 ... 0x5f: /* pop */
|
|
ot = gen_pop_T0(s);
|
|
/* NOTE: order is important for pop %sp */
|
|
gen_pop_update(s, ot);
|
|
gen_op_mov_reg_v(s, ot, (b & 7) | REX_B(s), s->T0);
|
|
break;
|
|
case 0x60: /* pusha */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
gen_pusha(s);
|
|
break;
|
|
case 0x61: /* popa */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
gen_popa(s);
|
|
break;
|
|
case 0x68: /* push Iv */
|
|
case 0x6a:
|
|
ot = mo_pushpop(s, dflag);
|
|
if (b == 0x68)
|
|
val = insn_get(env, s, ot);
|
|
else
|
|
val = (int8_t)insn_get(env, s, MO_8);
|
|
tcg_gen_movi_tl(s->T0, val);
|
|
gen_push_v(s, s->T0);
|
|
break;
|
|
case 0x8f: /* pop Ev */
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
ot = gen_pop_T0(s);
|
|
if (mod == 3) {
|
|
/* NOTE: order is important for pop %sp */
|
|
gen_pop_update(s, ot);
|
|
rm = (modrm & 7) | REX_B(s);
|
|
gen_op_mov_reg_v(s, ot, rm, s->T0);
|
|
} else {
|
|
/* NOTE: order is important too for MMU exceptions */
|
|
s->popl_esp_hack = 1 << ot;
|
|
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 1);
|
|
s->popl_esp_hack = 0;
|
|
gen_pop_update(s, ot);
|
|
}
|
|
break;
|
|
case 0xc8: /* enter */
|
|
{
|
|
int level;
|
|
val = x86_lduw_code(env, s);
|
|
level = x86_ldub_code(env, s);
|
|
gen_enter(s, val, level);
|
|
}
|
|
break;
|
|
case 0xc9: /* leave */
|
|
gen_leave(s);
|
|
break;
|
|
case 0x06: /* push es */
|
|
case 0x0e: /* push cs */
|
|
case 0x16: /* push ss */
|
|
case 0x1e: /* push ds */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
gen_op_movl_T0_seg(s, b >> 3);
|
|
gen_push_v(s, s->T0);
|
|
break;
|
|
case 0x1a0: /* push fs */
|
|
case 0x1a8: /* push gs */
|
|
gen_op_movl_T0_seg(s, (b >> 3) & 7);
|
|
gen_push_v(s, s->T0);
|
|
break;
|
|
case 0x07: /* pop es */
|
|
case 0x17: /* pop ss */
|
|
case 0x1f: /* pop ds */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
reg = b >> 3;
|
|
ot = gen_pop_T0(s);
|
|
gen_movl_seg_T0(s, reg);
|
|
gen_pop_update(s, ot);
|
|
break;
|
|
case 0x1a1: /* pop fs */
|
|
case 0x1a9: /* pop gs */
|
|
ot = gen_pop_T0(s);
|
|
gen_movl_seg_T0(s, (b >> 3) & 7);
|
|
gen_pop_update(s, ot);
|
|
break;
|
|
|
|
/**************************/
|
|
/* mov */
|
|
case 0x88:
|
|
case 0x89: /* mov Gv, Ev */
|
|
ot = mo_b_d(b, dflag);
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
|
|
/* generate a generic store */
|
|
gen_ldst_modrm(env, s, modrm, ot, reg, 1);
|
|
break;
|
|
case 0xc6:
|
|
case 0xc7: /* mov Ev, Iv */
|
|
ot = mo_b_d(b, dflag);
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
if (mod != 3) {
|
|
s->rip_offset = insn_const_size(ot);
|
|
gen_lea_modrm(env, s, modrm);
|
|
}
|
|
val = insn_get(env, s, ot);
|
|
tcg_gen_movi_tl(s->T0, val);
|
|
if (mod != 3) {
|
|
gen_op_st_v(s, ot, s->T0, s->A0);
|
|
} else {
|
|
gen_op_mov_reg_v(s, ot, (modrm & 7) | REX_B(s), s->T0);
|
|
}
|
|
break;
|
|
case 0x8a:
|
|
case 0x8b: /* mov Ev, Gv */
|
|
ot = mo_b_d(b, dflag);
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
|
|
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
|
|
gen_op_mov_reg_v(s, ot, reg, s->T0);
|
|
break;
|
|
case 0x8e: /* mov seg, Gv */
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = (modrm >> 3) & 7;
|
|
if (reg >= 6 || reg == R_CS)
|
|
goto illegal_op;
|
|
gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
|
|
gen_movl_seg_T0(s, reg);
|
|
break;
|
|
case 0x8c: /* mov Gv, seg */
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = (modrm >> 3) & 7;
|
|
mod = (modrm >> 6) & 3;
|
|
if (reg >= 6)
|
|
goto illegal_op;
|
|
gen_op_movl_T0_seg(s, reg);
|
|
ot = mod == 3 ? dflag : MO_16;
|
|
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 1);
|
|
break;
|
|
|
|
case 0x1b6: /* movzbS Gv, Eb */
|
|
case 0x1b7: /* movzwS Gv, Eb */
|
|
case 0x1be: /* movsbS Gv, Eb */
|
|
case 0x1bf: /* movswS Gv, Eb */
|
|
{
|
|
MemOp d_ot;
|
|
MemOp s_ot;
|
|
|
|
/* d_ot is the size of destination */
|
|
d_ot = dflag;
|
|
/* ot is the size of source */
|
|
ot = (b & 1) + MO_8;
|
|
/* s_ot is the sign+size of source */
|
|
s_ot = b & 8 ? MO_SIGN | ot : ot;
|
|
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
mod = (modrm >> 6) & 3;
|
|
rm = (modrm & 7) | REX_B(s);
|
|
|
|
if (mod == 3) {
|
|
if (s_ot == MO_SB && byte_reg_is_xH(s, rm)) {
|
|
tcg_gen_sextract_tl(s->T0, cpu_regs[rm - 4], 8, 8);
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T0, rm);
|
|
switch (s_ot) {
|
|
case MO_UB:
|
|
tcg_gen_ext8u_tl(s->T0, s->T0);
|
|
break;
|
|
case MO_SB:
|
|
tcg_gen_ext8s_tl(s->T0, s->T0);
|
|
break;
|
|
case MO_UW:
|
|
tcg_gen_ext16u_tl(s->T0, s->T0);
|
|
break;
|
|
default:
|
|
case MO_SW:
|
|
tcg_gen_ext16s_tl(s->T0, s->T0);
|
|
break;
|
|
}
|
|
}
|
|
gen_op_mov_reg_v(s, d_ot, reg, s->T0);
|
|
} else {
|
|
gen_lea_modrm(env, s, modrm);
|
|
gen_op_ld_v(s, s_ot, s->T0, s->A0);
|
|
gen_op_mov_reg_v(s, d_ot, reg, s->T0);
|
|
}
|
|
}
|
|
break;
|
|
|
|
case 0x8d: /* lea */
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
if (mod == 3)
|
|
goto illegal_op;
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
{
|
|
AddressParts a = gen_lea_modrm_0(env, s, modrm);
|
|
TCGv ea = gen_lea_modrm_1(s, a, false);
|
|
gen_lea_v_seg(s, s->aflag, ea, -1, -1);
|
|
gen_op_mov_reg_v(s, dflag, reg, s->A0);
|
|
}
|
|
break;
|
|
|
|
case 0xa0: /* mov EAX, Ov */
|
|
case 0xa1:
|
|
case 0xa2: /* mov Ov, EAX */
|
|
case 0xa3:
|
|
{
|
|
target_ulong offset_addr;
|
|
|
|
ot = mo_b_d(b, dflag);
|
|
offset_addr = insn_get_addr(env, s, s->aflag);
|
|
tcg_gen_movi_tl(s->A0, offset_addr);
|
|
gen_add_A0_ds_seg(s);
|
|
if ((b & 2) == 0) {
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
gen_op_mov_reg_v(s, ot, R_EAX, s->T0);
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T0, R_EAX);
|
|
gen_op_st_v(s, ot, s->T0, s->A0);
|
|
}
|
|
}
|
|
break;
|
|
case 0xd7: /* xlat */
|
|
tcg_gen_mov_tl(s->A0, cpu_regs[R_EBX]);
|
|
tcg_gen_ext8u_tl(s->T0, cpu_regs[R_EAX]);
|
|
tcg_gen_add_tl(s->A0, s->A0, s->T0);
|
|
gen_extu(s->aflag, s->A0);
|
|
gen_add_A0_ds_seg(s);
|
|
gen_op_ld_v(s, MO_8, s->T0, s->A0);
|
|
gen_op_mov_reg_v(s, MO_8, R_EAX, s->T0);
|
|
break;
|
|
case 0xb0 ... 0xb7: /* mov R, Ib */
|
|
val = insn_get(env, s, MO_8);
|
|
tcg_gen_movi_tl(s->T0, val);
|
|
gen_op_mov_reg_v(s, MO_8, (b & 7) | REX_B(s), s->T0);
|
|
break;
|
|
case 0xb8 ... 0xbf: /* mov R, Iv */
|
|
#ifdef TARGET_X86_64
|
|
if (dflag == MO_64) {
|
|
uint64_t tmp;
|
|
/* 64 bit case */
|
|
tmp = x86_ldq_code(env, s);
|
|
reg = (b & 7) | REX_B(s);
|
|
tcg_gen_movi_tl(s->T0, tmp);
|
|
gen_op_mov_reg_v(s, MO_64, reg, s->T0);
|
|
} else
|
|
#endif
|
|
{
|
|
ot = dflag;
|
|
val = insn_get(env, s, ot);
|
|
reg = (b & 7) | REX_B(s);
|
|
tcg_gen_movi_tl(s->T0, val);
|
|
gen_op_mov_reg_v(s, ot, reg, s->T0);
|
|
}
|
|
break;
|
|
|
|
case 0x91 ... 0x97: /* xchg R, EAX */
|
|
do_xchg_reg_eax:
|
|
ot = dflag;
|
|
reg = (b & 7) | REX_B(s);
|
|
rm = R_EAX;
|
|
goto do_xchg_reg;
|
|
case 0x86:
|
|
case 0x87: /* xchg Ev, Gv */
|
|
ot = mo_b_d(b, dflag);
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
mod = (modrm >> 6) & 3;
|
|
if (mod == 3) {
|
|
rm = (modrm & 7) | REX_B(s);
|
|
do_xchg_reg:
|
|
gen_op_mov_v_reg(s, ot, s->T0, reg);
|
|
gen_op_mov_v_reg(s, ot, s->T1, rm);
|
|
gen_op_mov_reg_v(s, ot, rm, s->T0);
|
|
gen_op_mov_reg_v(s, ot, reg, s->T1);
|
|
} else {
|
|
gen_lea_modrm(env, s, modrm);
|
|
gen_op_mov_v_reg(s, ot, s->T0, reg);
|
|
/* for xchg, lock is implicit */
|
|
tcg_gen_atomic_xchg_tl(s->T1, s->A0, s->T0,
|
|
s->mem_index, ot | MO_LE);
|
|
gen_op_mov_reg_v(s, ot, reg, s->T1);
|
|
}
|
|
break;
|
|
case 0xc4: /* les Gv */
|
|
/* In CODE64 this is VEX3; see above. */
|
|
op = R_ES;
|
|
goto do_lxx;
|
|
case 0xc5: /* lds Gv */
|
|
/* In CODE64 this is VEX2; see above. */
|
|
op = R_DS;
|
|
goto do_lxx;
|
|
case 0x1b2: /* lss Gv */
|
|
op = R_SS;
|
|
goto do_lxx;
|
|
case 0x1b4: /* lfs Gv */
|
|
op = R_FS;
|
|
goto do_lxx;
|
|
case 0x1b5: /* lgs Gv */
|
|
op = R_GS;
|
|
do_lxx:
|
|
ot = dflag != MO_16 ? MO_32 : MO_16;
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
mod = (modrm >> 6) & 3;
|
|
if (mod == 3)
|
|
goto illegal_op;
|
|
gen_lea_modrm(env, s, modrm);
|
|
gen_op_ld_v(s, ot, s->T1, s->A0);
|
|
gen_add_A0_im(s, 1 << ot);
|
|
/* load the segment first to handle exceptions properly */
|
|
gen_op_ld_v(s, MO_16, s->T0, s->A0);
|
|
gen_movl_seg_T0(s, op);
|
|
/* then put the data */
|
|
gen_op_mov_reg_v(s, ot, reg, s->T1);
|
|
break;
|
|
|
|
/************************/
|
|
/* shifts */
|
|
case 0xc0:
|
|
case 0xc1:
|
|
/* shift Ev,Ib */
|
|
shift = 2;
|
|
grp2:
|
|
{
|
|
ot = mo_b_d(b, dflag);
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
op = (modrm >> 3) & 7;
|
|
|
|
if (mod != 3) {
|
|
if (shift == 2) {
|
|
s->rip_offset = 1;
|
|
}
|
|
gen_lea_modrm(env, s, modrm);
|
|
opreg = OR_TMP0;
|
|
} else {
|
|
opreg = (modrm & 7) | REX_B(s);
|
|
}
|
|
|
|
/* simpler op */
|
|
if (shift == 0) {
|
|
gen_shift(s, op, ot, opreg, OR_ECX);
|
|
} else {
|
|
if (shift == 2) {
|
|
shift = x86_ldub_code(env, s);
|
|
}
|
|
gen_shifti(s, op, ot, opreg, shift);
|
|
}
|
|
}
|
|
break;
|
|
case 0xd0:
|
|
case 0xd1:
|
|
/* shift Ev,1 */
|
|
shift = 1;
|
|
goto grp2;
|
|
case 0xd2:
|
|
case 0xd3:
|
|
/* shift Ev,cl */
|
|
shift = 0;
|
|
goto grp2;
|
|
|
|
case 0x1a4: /* shld imm */
|
|
op = 0;
|
|
shift = 1;
|
|
goto do_shiftd;
|
|
case 0x1a5: /* shld cl */
|
|
op = 0;
|
|
shift = 0;
|
|
goto do_shiftd;
|
|
case 0x1ac: /* shrd imm */
|
|
op = 1;
|
|
shift = 1;
|
|
goto do_shiftd;
|
|
case 0x1ad: /* shrd cl */
|
|
op = 1;
|
|
shift = 0;
|
|
do_shiftd:
|
|
ot = dflag;
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
rm = (modrm & 7) | REX_B(s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
if (mod != 3) {
|
|
gen_lea_modrm(env, s, modrm);
|
|
opreg = OR_TMP0;
|
|
} else {
|
|
opreg = rm;
|
|
}
|
|
gen_op_mov_v_reg(s, ot, s->T1, reg);
|
|
|
|
if (shift) {
|
|
TCGv imm = tcg_const_tl(x86_ldub_code(env, s));
|
|
gen_shiftd_rm_T1(s, ot, opreg, op, imm);
|
|
tcg_temp_free(imm);
|
|
} else {
|
|
gen_shiftd_rm_T1(s, ot, opreg, op, cpu_regs[R_ECX]);
|
|
}
|
|
break;
|
|
|
|
/************************/
|
|
/* floats */
|
|
case 0xd8 ... 0xdf:
|
|
{
|
|
bool update_fip = true;
|
|
|
|
if (s->flags & (HF_EM_MASK | HF_TS_MASK)) {
|
|
/* if CR0.EM or CR0.TS are set, generate an FPU exception */
|
|
/* XXX: what to do if illegal op ? */
|
|
gen_exception(s, EXCP07_PREX);
|
|
break;
|
|
}
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
rm = modrm & 7;
|
|
op = ((b & 7) << 3) | ((modrm >> 3) & 7);
|
|
if (mod != 3) {
|
|
/* memory op */
|
|
AddressParts a = gen_lea_modrm_0(env, s, modrm);
|
|
TCGv ea = gen_lea_modrm_1(s, a, false);
|
|
TCGv last_addr = tcg_temp_new();
|
|
bool update_fdp = true;
|
|
|
|
tcg_gen_mov_tl(last_addr, ea);
|
|
gen_lea_v_seg(s, s->aflag, ea, a.def_seg, s->override);
|
|
|
|
switch (op) {
|
|
case 0x00 ... 0x07: /* fxxxs */
|
|
case 0x10 ... 0x17: /* fixxxl */
|
|
case 0x20 ... 0x27: /* fxxxl */
|
|
case 0x30 ... 0x37: /* fixxx */
|
|
{
|
|
int op1;
|
|
op1 = op & 7;
|
|
|
|
switch (op >> 4) {
|
|
case 0:
|
|
tcg_gen_qemu_ld_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LEUL);
|
|
gen_helper_flds_FT0(cpu_env, s->tmp2_i32);
|
|
break;
|
|
case 1:
|
|
tcg_gen_qemu_ld_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LEUL);
|
|
gen_helper_fildl_FT0(cpu_env, s->tmp2_i32);
|
|
break;
|
|
case 2:
|
|
tcg_gen_qemu_ld_i64(s->tmp1_i64, s->A0,
|
|
s->mem_index, MO_LEUQ);
|
|
gen_helper_fldl_FT0(cpu_env, s->tmp1_i64);
|
|
break;
|
|
case 3:
|
|
default:
|
|
tcg_gen_qemu_ld_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LESW);
|
|
gen_helper_fildl_FT0(cpu_env, s->tmp2_i32);
|
|
break;
|
|
}
|
|
|
|
gen_helper_fp_arith_ST0_FT0(op1);
|
|
if (op1 == 3) {
|
|
/* fcomp needs pop */
|
|
gen_helper_fpop(cpu_env);
|
|
}
|
|
}
|
|
break;
|
|
case 0x08: /* flds */
|
|
case 0x0a: /* fsts */
|
|
case 0x0b: /* fstps */
|
|
case 0x18 ... 0x1b: /* fildl, fisttpl, fistl, fistpl */
|
|
case 0x28 ... 0x2b: /* fldl, fisttpll, fstl, fstpl */
|
|
case 0x38 ... 0x3b: /* filds, fisttps, fists, fistps */
|
|
switch (op & 7) {
|
|
case 0:
|
|
switch (op >> 4) {
|
|
case 0:
|
|
tcg_gen_qemu_ld_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LEUL);
|
|
gen_helper_flds_ST0(cpu_env, s->tmp2_i32);
|
|
break;
|
|
case 1:
|
|
tcg_gen_qemu_ld_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LEUL);
|
|
gen_helper_fildl_ST0(cpu_env, s->tmp2_i32);
|
|
break;
|
|
case 2:
|
|
tcg_gen_qemu_ld_i64(s->tmp1_i64, s->A0,
|
|
s->mem_index, MO_LEUQ);
|
|
gen_helper_fldl_ST0(cpu_env, s->tmp1_i64);
|
|
break;
|
|
case 3:
|
|
default:
|
|
tcg_gen_qemu_ld_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LESW);
|
|
gen_helper_fildl_ST0(cpu_env, s->tmp2_i32);
|
|
break;
|
|
}
|
|
break;
|
|
case 1:
|
|
/* XXX: the corresponding CPUID bit must be tested ! */
|
|
switch (op >> 4) {
|
|
case 1:
|
|
gen_helper_fisttl_ST0(s->tmp2_i32, cpu_env);
|
|
tcg_gen_qemu_st_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LEUL);
|
|
break;
|
|
case 2:
|
|
gen_helper_fisttll_ST0(s->tmp1_i64, cpu_env);
|
|
tcg_gen_qemu_st_i64(s->tmp1_i64, s->A0,
|
|
s->mem_index, MO_LEUQ);
|
|
break;
|
|
case 3:
|
|
default:
|
|
gen_helper_fistt_ST0(s->tmp2_i32, cpu_env);
|
|
tcg_gen_qemu_st_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LEUW);
|
|
break;
|
|
}
|
|
gen_helper_fpop(cpu_env);
|
|
break;
|
|
default:
|
|
switch (op >> 4) {
|
|
case 0:
|
|
gen_helper_fsts_ST0(s->tmp2_i32, cpu_env);
|
|
tcg_gen_qemu_st_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LEUL);
|
|
break;
|
|
case 1:
|
|
gen_helper_fistl_ST0(s->tmp2_i32, cpu_env);
|
|
tcg_gen_qemu_st_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LEUL);
|
|
break;
|
|
case 2:
|
|
gen_helper_fstl_ST0(s->tmp1_i64, cpu_env);
|
|
tcg_gen_qemu_st_i64(s->tmp1_i64, s->A0,
|
|
s->mem_index, MO_LEUQ);
|
|
break;
|
|
case 3:
|
|
default:
|
|
gen_helper_fist_ST0(s->tmp2_i32, cpu_env);
|
|
tcg_gen_qemu_st_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LEUW);
|
|
break;
|
|
}
|
|
if ((op & 7) == 3) {
|
|
gen_helper_fpop(cpu_env);
|
|
}
|
|
break;
|
|
}
|
|
break;
|
|
case 0x0c: /* fldenv mem */
|
|
gen_helper_fldenv(cpu_env, s->A0,
|
|
tcg_const_i32(dflag - 1));
|
|
update_fip = update_fdp = false;
|
|
break;
|
|
case 0x0d: /* fldcw mem */
|
|
tcg_gen_qemu_ld_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LEUW);
|
|
gen_helper_fldcw(cpu_env, s->tmp2_i32);
|
|
update_fip = update_fdp = false;
|
|
break;
|
|
case 0x0e: /* fnstenv mem */
|
|
gen_helper_fstenv(cpu_env, s->A0,
|
|
tcg_const_i32(dflag - 1));
|
|
update_fip = update_fdp = false;
|
|
break;
|
|
case 0x0f: /* fnstcw mem */
|
|
gen_helper_fnstcw(s->tmp2_i32, cpu_env);
|
|
tcg_gen_qemu_st_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LEUW);
|
|
update_fip = update_fdp = false;
|
|
break;
|
|
case 0x1d: /* fldt mem */
|
|
gen_helper_fldt_ST0(cpu_env, s->A0);
|
|
break;
|
|
case 0x1f: /* fstpt mem */
|
|
gen_helper_fstt_ST0(cpu_env, s->A0);
|
|
gen_helper_fpop(cpu_env);
|
|
break;
|
|
case 0x2c: /* frstor mem */
|
|
gen_helper_frstor(cpu_env, s->A0,
|
|
tcg_const_i32(dflag - 1));
|
|
update_fip = update_fdp = false;
|
|
break;
|
|
case 0x2e: /* fnsave mem */
|
|
gen_helper_fsave(cpu_env, s->A0,
|
|
tcg_const_i32(dflag - 1));
|
|
update_fip = update_fdp = false;
|
|
break;
|
|
case 0x2f: /* fnstsw mem */
|
|
gen_helper_fnstsw(s->tmp2_i32, cpu_env);
|
|
tcg_gen_qemu_st_i32(s->tmp2_i32, s->A0,
|
|
s->mem_index, MO_LEUW);
|
|
update_fip = update_fdp = false;
|
|
break;
|
|
case 0x3c: /* fbld */
|
|
gen_helper_fbld_ST0(cpu_env, s->A0);
|
|
break;
|
|
case 0x3e: /* fbstp */
|
|
gen_helper_fbst_ST0(cpu_env, s->A0);
|
|
gen_helper_fpop(cpu_env);
|
|
break;
|
|
case 0x3d: /* fildll */
|
|
tcg_gen_qemu_ld_i64(s->tmp1_i64, s->A0,
|
|
s->mem_index, MO_LEUQ);
|
|
gen_helper_fildll_ST0(cpu_env, s->tmp1_i64);
|
|
break;
|
|
case 0x3f: /* fistpll */
|
|
gen_helper_fistll_ST0(s->tmp1_i64, cpu_env);
|
|
tcg_gen_qemu_st_i64(s->tmp1_i64, s->A0,
|
|
s->mem_index, MO_LEUQ);
|
|
gen_helper_fpop(cpu_env);
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
|
|
if (update_fdp) {
|
|
int last_seg = s->override >= 0 ? s->override : a.def_seg;
|
|
|
|
tcg_gen_ld_i32(s->tmp2_i32, cpu_env,
|
|
offsetof(CPUX86State,
|
|
segs[last_seg].selector));
|
|
tcg_gen_st16_i32(s->tmp2_i32, cpu_env,
|
|
offsetof(CPUX86State, fpds));
|
|
tcg_gen_st_tl(last_addr, cpu_env,
|
|
offsetof(CPUX86State, fpdp));
|
|
}
|
|
tcg_temp_free(last_addr);
|
|
} else {
|
|
/* register float ops */
|
|
opreg = rm;
|
|
|
|
switch (op) {
|
|
case 0x08: /* fld sti */
|
|
gen_helper_fpush(cpu_env);
|
|
gen_helper_fmov_ST0_STN(cpu_env,
|
|
tcg_const_i32((opreg + 1) & 7));
|
|
break;
|
|
case 0x09: /* fxchg sti */
|
|
case 0x29: /* fxchg4 sti, undocumented op */
|
|
case 0x39: /* fxchg7 sti, undocumented op */
|
|
gen_helper_fxchg_ST0_STN(cpu_env, tcg_const_i32(opreg));
|
|
break;
|
|
case 0x0a: /* grp d9/2 */
|
|
switch (rm) {
|
|
case 0: /* fnop */
|
|
/* check exceptions (FreeBSD FPU probe) */
|
|
gen_helper_fwait(cpu_env);
|
|
update_fip = false;
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
break;
|
|
case 0x0c: /* grp d9/4 */
|
|
switch (rm) {
|
|
case 0: /* fchs */
|
|
gen_helper_fchs_ST0(cpu_env);
|
|
break;
|
|
case 1: /* fabs */
|
|
gen_helper_fabs_ST0(cpu_env);
|
|
break;
|
|
case 4: /* ftst */
|
|
gen_helper_fldz_FT0(cpu_env);
|
|
gen_helper_fcom_ST0_FT0(cpu_env);
|
|
break;
|
|
case 5: /* fxam */
|
|
gen_helper_fxam_ST0(cpu_env);
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
break;
|
|
case 0x0d: /* grp d9/5 */
|
|
{
|
|
switch (rm) {
|
|
case 0:
|
|
gen_helper_fpush(cpu_env);
|
|
gen_helper_fld1_ST0(cpu_env);
|
|
break;
|
|
case 1:
|
|
gen_helper_fpush(cpu_env);
|
|
gen_helper_fldl2t_ST0(cpu_env);
|
|
break;
|
|
case 2:
|
|
gen_helper_fpush(cpu_env);
|
|
gen_helper_fldl2e_ST0(cpu_env);
|
|
break;
|
|
case 3:
|
|
gen_helper_fpush(cpu_env);
|
|
gen_helper_fldpi_ST0(cpu_env);
|
|
break;
|
|
case 4:
|
|
gen_helper_fpush(cpu_env);
|
|
gen_helper_fldlg2_ST0(cpu_env);
|
|
break;
|
|
case 5:
|
|
gen_helper_fpush(cpu_env);
|
|
gen_helper_fldln2_ST0(cpu_env);
|
|
break;
|
|
case 6:
|
|
gen_helper_fpush(cpu_env);
|
|
gen_helper_fldz_ST0(cpu_env);
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
}
|
|
break;
|
|
case 0x0e: /* grp d9/6 */
|
|
switch (rm) {
|
|
case 0: /* f2xm1 */
|
|
gen_helper_f2xm1(cpu_env);
|
|
break;
|
|
case 1: /* fyl2x */
|
|
gen_helper_fyl2x(cpu_env);
|
|
break;
|
|
case 2: /* fptan */
|
|
gen_helper_fptan(cpu_env);
|
|
break;
|
|
case 3: /* fpatan */
|
|
gen_helper_fpatan(cpu_env);
|
|
break;
|
|
case 4: /* fxtract */
|
|
gen_helper_fxtract(cpu_env);
|
|
break;
|
|
case 5: /* fprem1 */
|
|
gen_helper_fprem1(cpu_env);
|
|
break;
|
|
case 6: /* fdecstp */
|
|
gen_helper_fdecstp(cpu_env);
|
|
break;
|
|
default:
|
|
case 7: /* fincstp */
|
|
gen_helper_fincstp(cpu_env);
|
|
break;
|
|
}
|
|
break;
|
|
case 0x0f: /* grp d9/7 */
|
|
switch (rm) {
|
|
case 0: /* fprem */
|
|
gen_helper_fprem(cpu_env);
|
|
break;
|
|
case 1: /* fyl2xp1 */
|
|
gen_helper_fyl2xp1(cpu_env);
|
|
break;
|
|
case 2: /* fsqrt */
|
|
gen_helper_fsqrt(cpu_env);
|
|
break;
|
|
case 3: /* fsincos */
|
|
gen_helper_fsincos(cpu_env);
|
|
break;
|
|
case 5: /* fscale */
|
|
gen_helper_fscale(cpu_env);
|
|
break;
|
|
case 4: /* frndint */
|
|
gen_helper_frndint(cpu_env);
|
|
break;
|
|
case 6: /* fsin */
|
|
gen_helper_fsin(cpu_env);
|
|
break;
|
|
default:
|
|
case 7: /* fcos */
|
|
gen_helper_fcos(cpu_env);
|
|
break;
|
|
}
|
|
break;
|
|
case 0x00: case 0x01: case 0x04 ... 0x07: /* fxxx st, sti */
|
|
case 0x20: case 0x21: case 0x24 ... 0x27: /* fxxx sti, st */
|
|
case 0x30: case 0x31: case 0x34 ... 0x37: /* fxxxp sti, st */
|
|
{
|
|
int op1;
|
|
|
|
op1 = op & 7;
|
|
if (op >= 0x20) {
|
|
gen_helper_fp_arith_STN_ST0(op1, opreg);
|
|
if (op >= 0x30) {
|
|
gen_helper_fpop(cpu_env);
|
|
}
|
|
} else {
|
|
gen_helper_fmov_FT0_STN(cpu_env,
|
|
tcg_const_i32(opreg));
|
|
gen_helper_fp_arith_ST0_FT0(op1);
|
|
}
|
|
}
|
|
break;
|
|
case 0x02: /* fcom */
|
|
case 0x22: /* fcom2, undocumented op */
|
|
gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
|
|
gen_helper_fcom_ST0_FT0(cpu_env);
|
|
break;
|
|
case 0x03: /* fcomp */
|
|
case 0x23: /* fcomp3, undocumented op */
|
|
case 0x32: /* fcomp5, undocumented op */
|
|
gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
|
|
gen_helper_fcom_ST0_FT0(cpu_env);
|
|
gen_helper_fpop(cpu_env);
|
|
break;
|
|
case 0x15: /* da/5 */
|
|
switch (rm) {
|
|
case 1: /* fucompp */
|
|
gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(1));
|
|
gen_helper_fucom_ST0_FT0(cpu_env);
|
|
gen_helper_fpop(cpu_env);
|
|
gen_helper_fpop(cpu_env);
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
break;
|
|
case 0x1c:
|
|
switch (rm) {
|
|
case 0: /* feni (287 only, just do nop here) */
|
|
break;
|
|
case 1: /* fdisi (287 only, just do nop here) */
|
|
break;
|
|
case 2: /* fclex */
|
|
gen_helper_fclex(cpu_env);
|
|
update_fip = false;
|
|
break;
|
|
case 3: /* fninit */
|
|
gen_helper_fninit(cpu_env);
|
|
update_fip = false;
|
|
break;
|
|
case 4: /* fsetpm (287 only, just do nop here) */
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
break;
|
|
case 0x1d: /* fucomi */
|
|
if (!(s->cpuid_features & CPUID_CMOV)) {
|
|
goto illegal_op;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
|
|
gen_helper_fucomi_ST0_FT0(cpu_env);
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
break;
|
|
case 0x1e: /* fcomi */
|
|
if (!(s->cpuid_features & CPUID_CMOV)) {
|
|
goto illegal_op;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
|
|
gen_helper_fcomi_ST0_FT0(cpu_env);
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
break;
|
|
case 0x28: /* ffree sti */
|
|
gen_helper_ffree_STN(cpu_env, tcg_const_i32(opreg));
|
|
break;
|
|
case 0x2a: /* fst sti */
|
|
gen_helper_fmov_STN_ST0(cpu_env, tcg_const_i32(opreg));
|
|
break;
|
|
case 0x2b: /* fstp sti */
|
|
case 0x0b: /* fstp1 sti, undocumented op */
|
|
case 0x3a: /* fstp8 sti, undocumented op */
|
|
case 0x3b: /* fstp9 sti, undocumented op */
|
|
gen_helper_fmov_STN_ST0(cpu_env, tcg_const_i32(opreg));
|
|
gen_helper_fpop(cpu_env);
|
|
break;
|
|
case 0x2c: /* fucom st(i) */
|
|
gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
|
|
gen_helper_fucom_ST0_FT0(cpu_env);
|
|
break;
|
|
case 0x2d: /* fucomp st(i) */
|
|
gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
|
|
gen_helper_fucom_ST0_FT0(cpu_env);
|
|
gen_helper_fpop(cpu_env);
|
|
break;
|
|
case 0x33: /* de/3 */
|
|
switch (rm) {
|
|
case 1: /* fcompp */
|
|
gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(1));
|
|
gen_helper_fcom_ST0_FT0(cpu_env);
|
|
gen_helper_fpop(cpu_env);
|
|
gen_helper_fpop(cpu_env);
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
break;
|
|
case 0x38: /* ffreep sti, undocumented op */
|
|
gen_helper_ffree_STN(cpu_env, tcg_const_i32(opreg));
|
|
gen_helper_fpop(cpu_env);
|
|
break;
|
|
case 0x3c: /* df/4 */
|
|
switch (rm) {
|
|
case 0:
|
|
gen_helper_fnstsw(s->tmp2_i32, cpu_env);
|
|
tcg_gen_extu_i32_tl(s->T0, s->tmp2_i32);
|
|
gen_op_mov_reg_v(s, MO_16, R_EAX, s->T0);
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
break;
|
|
case 0x3d: /* fucomip */
|
|
if (!(s->cpuid_features & CPUID_CMOV)) {
|
|
goto illegal_op;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
|
|
gen_helper_fucomi_ST0_FT0(cpu_env);
|
|
gen_helper_fpop(cpu_env);
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
break;
|
|
case 0x3e: /* fcomip */
|
|
if (!(s->cpuid_features & CPUID_CMOV)) {
|
|
goto illegal_op;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_helper_fmov_FT0_STN(cpu_env, tcg_const_i32(opreg));
|
|
gen_helper_fcomi_ST0_FT0(cpu_env);
|
|
gen_helper_fpop(cpu_env);
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
break;
|
|
case 0x10 ... 0x13: /* fcmovxx */
|
|
case 0x18 ... 0x1b:
|
|
{
|
|
int op1;
|
|
TCGLabel *l1;
|
|
static const uint8_t fcmov_cc[8] = {
|
|
(JCC_B << 1),
|
|
(JCC_Z << 1),
|
|
(JCC_BE << 1),
|
|
(JCC_P << 1),
|
|
};
|
|
|
|
if (!(s->cpuid_features & CPUID_CMOV)) {
|
|
goto illegal_op;
|
|
}
|
|
op1 = fcmov_cc[op & 3] | (((op >> 3) & 1) ^ 1);
|
|
l1 = gen_new_label();
|
|
gen_jcc1_noeob(s, op1, l1);
|
|
gen_helper_fmov_ST0_STN(cpu_env, tcg_const_i32(opreg));
|
|
gen_set_label(l1);
|
|
}
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
}
|
|
|
|
if (update_fip) {
|
|
tcg_gen_ld_i32(s->tmp2_i32, cpu_env,
|
|
offsetof(CPUX86State, segs[R_CS].selector));
|
|
tcg_gen_st16_i32(s->tmp2_i32, cpu_env,
|
|
offsetof(CPUX86State, fpcs));
|
|
tcg_gen_st_tl(eip_cur_tl(s),
|
|
cpu_env, offsetof(CPUX86State, fpip));
|
|
}
|
|
}
|
|
break;
|
|
/************************/
|
|
/* string ops */
|
|
|
|
case 0xa4: /* movsS */
|
|
case 0xa5:
|
|
ot = mo_b_d(b, dflag);
|
|
if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
|
|
gen_repz_movs(s, ot);
|
|
} else {
|
|
gen_movs(s, ot);
|
|
}
|
|
break;
|
|
|
|
case 0xaa: /* stosS */
|
|
case 0xab:
|
|
ot = mo_b_d(b, dflag);
|
|
if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
|
|
gen_repz_stos(s, ot);
|
|
} else {
|
|
gen_stos(s, ot);
|
|
}
|
|
break;
|
|
case 0xac: /* lodsS */
|
|
case 0xad:
|
|
ot = mo_b_d(b, dflag);
|
|
if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
|
|
gen_repz_lods(s, ot);
|
|
} else {
|
|
gen_lods(s, ot);
|
|
}
|
|
break;
|
|
case 0xae: /* scasS */
|
|
case 0xaf:
|
|
ot = mo_b_d(b, dflag);
|
|
if (prefixes & PREFIX_REPNZ) {
|
|
gen_repz_scas(s, ot, 1);
|
|
} else if (prefixes & PREFIX_REPZ) {
|
|
gen_repz_scas(s, ot, 0);
|
|
} else {
|
|
gen_scas(s, ot);
|
|
}
|
|
break;
|
|
|
|
case 0xa6: /* cmpsS */
|
|
case 0xa7:
|
|
ot = mo_b_d(b, dflag);
|
|
if (prefixes & PREFIX_REPNZ) {
|
|
gen_repz_cmps(s, ot, 1);
|
|
} else if (prefixes & PREFIX_REPZ) {
|
|
gen_repz_cmps(s, ot, 0);
|
|
} else {
|
|
gen_cmps(s, ot);
|
|
}
|
|
break;
|
|
case 0x6c: /* insS */
|
|
case 0x6d:
|
|
ot = mo_b_d32(b, dflag);
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, cpu_regs[R_EDX]);
|
|
tcg_gen_ext16u_i32(s->tmp2_i32, s->tmp2_i32);
|
|
if (!gen_check_io(s, ot, s->tmp2_i32,
|
|
SVM_IOIO_TYPE_MASK | SVM_IOIO_STR_MASK)) {
|
|
break;
|
|
}
|
|
if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
|
|
gen_io_start();
|
|
s->base.is_jmp = DISAS_TOO_MANY;
|
|
}
|
|
if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
|
|
gen_repz_ins(s, ot);
|
|
} else {
|
|
gen_ins(s, ot);
|
|
}
|
|
break;
|
|
case 0x6e: /* outsS */
|
|
case 0x6f:
|
|
ot = mo_b_d32(b, dflag);
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, cpu_regs[R_EDX]);
|
|
tcg_gen_ext16u_i32(s->tmp2_i32, s->tmp2_i32);
|
|
if (!gen_check_io(s, ot, s->tmp2_i32, SVM_IOIO_STR_MASK)) {
|
|
break;
|
|
}
|
|
if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
|
|
gen_io_start();
|
|
s->base.is_jmp = DISAS_TOO_MANY;
|
|
}
|
|
if (prefixes & (PREFIX_REPZ | PREFIX_REPNZ)) {
|
|
gen_repz_outs(s, ot);
|
|
} else {
|
|
gen_outs(s, ot);
|
|
}
|
|
break;
|
|
|
|
/************************/
|
|
/* port I/O */
|
|
|
|
case 0xe4:
|
|
case 0xe5:
|
|
ot = mo_b_d32(b, dflag);
|
|
val = x86_ldub_code(env, s);
|
|
tcg_gen_movi_i32(s->tmp2_i32, val);
|
|
if (!gen_check_io(s, ot, s->tmp2_i32, SVM_IOIO_TYPE_MASK)) {
|
|
break;
|
|
}
|
|
if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
|
|
gen_io_start();
|
|
s->base.is_jmp = DISAS_TOO_MANY;
|
|
}
|
|
gen_helper_in_func(ot, s->T1, s->tmp2_i32);
|
|
gen_op_mov_reg_v(s, ot, R_EAX, s->T1);
|
|
gen_bpt_io(s, s->tmp2_i32, ot);
|
|
break;
|
|
case 0xe6:
|
|
case 0xe7:
|
|
ot = mo_b_d32(b, dflag);
|
|
val = x86_ldub_code(env, s);
|
|
tcg_gen_movi_i32(s->tmp2_i32, val);
|
|
if (!gen_check_io(s, ot, s->tmp2_i32, 0)) {
|
|
break;
|
|
}
|
|
if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
|
|
gen_io_start();
|
|
s->base.is_jmp = DISAS_TOO_MANY;
|
|
}
|
|
gen_op_mov_v_reg(s, ot, s->T1, R_EAX);
|
|
tcg_gen_trunc_tl_i32(s->tmp3_i32, s->T1);
|
|
gen_helper_out_func(ot, s->tmp2_i32, s->tmp3_i32);
|
|
gen_bpt_io(s, s->tmp2_i32, ot);
|
|
break;
|
|
case 0xec:
|
|
case 0xed:
|
|
ot = mo_b_d32(b, dflag);
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, cpu_regs[R_EDX]);
|
|
tcg_gen_ext16u_i32(s->tmp2_i32, s->tmp2_i32);
|
|
if (!gen_check_io(s, ot, s->tmp2_i32, SVM_IOIO_TYPE_MASK)) {
|
|
break;
|
|
}
|
|
if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
|
|
gen_io_start();
|
|
s->base.is_jmp = DISAS_TOO_MANY;
|
|
}
|
|
gen_helper_in_func(ot, s->T1, s->tmp2_i32);
|
|
gen_op_mov_reg_v(s, ot, R_EAX, s->T1);
|
|
gen_bpt_io(s, s->tmp2_i32, ot);
|
|
break;
|
|
case 0xee:
|
|
case 0xef:
|
|
ot = mo_b_d32(b, dflag);
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, cpu_regs[R_EDX]);
|
|
tcg_gen_ext16u_i32(s->tmp2_i32, s->tmp2_i32);
|
|
if (!gen_check_io(s, ot, s->tmp2_i32, 0)) {
|
|
break;
|
|
}
|
|
if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
|
|
gen_io_start();
|
|
s->base.is_jmp = DISAS_TOO_MANY;
|
|
}
|
|
gen_op_mov_v_reg(s, ot, s->T1, R_EAX);
|
|
tcg_gen_trunc_tl_i32(s->tmp3_i32, s->T1);
|
|
gen_helper_out_func(ot, s->tmp2_i32, s->tmp3_i32);
|
|
gen_bpt_io(s, s->tmp2_i32, ot);
|
|
break;
|
|
|
|
/************************/
|
|
/* control */
|
|
case 0xc2: /* ret im */
|
|
val = x86_ldsw_code(env, s);
|
|
ot = gen_pop_T0(s);
|
|
gen_stack_update(s, val + (1 << ot));
|
|
/* Note that gen_pop_T0 uses a zero-extending load. */
|
|
gen_op_jmp_v(s, s->T0);
|
|
gen_bnd_jmp(s);
|
|
s->base.is_jmp = DISAS_JUMP;
|
|
break;
|
|
case 0xc3: /* ret */
|
|
ot = gen_pop_T0(s);
|
|
gen_pop_update(s, ot);
|
|
/* Note that gen_pop_T0 uses a zero-extending load. */
|
|
gen_op_jmp_v(s, s->T0);
|
|
gen_bnd_jmp(s);
|
|
s->base.is_jmp = DISAS_JUMP;
|
|
break;
|
|
case 0xca: /* lret im */
|
|
val = x86_ldsw_code(env, s);
|
|
do_lret:
|
|
if (PE(s) && !VM86(s)) {
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_lret_protected(cpu_env, tcg_const_i32(dflag - 1),
|
|
tcg_const_i32(val));
|
|
} else {
|
|
gen_stack_A0(s);
|
|
/* pop offset */
|
|
gen_op_ld_v(s, dflag, s->T0, s->A0);
|
|
/* NOTE: keeping EIP updated is not a problem in case of
|
|
exception */
|
|
gen_op_jmp_v(s, s->T0);
|
|
/* pop selector */
|
|
gen_add_A0_im(s, 1 << dflag);
|
|
gen_op_ld_v(s, dflag, s->T0, s->A0);
|
|
gen_op_movl_seg_T0_vm(s, R_CS);
|
|
/* add stack offset */
|
|
gen_stack_update(s, val + (2 << dflag));
|
|
}
|
|
s->base.is_jmp = DISAS_EOB_ONLY;
|
|
break;
|
|
case 0xcb: /* lret */
|
|
val = 0;
|
|
goto do_lret;
|
|
case 0xcf: /* iret */
|
|
gen_svm_check_intercept(s, SVM_EXIT_IRET);
|
|
if (!PE(s) || VM86(s)) {
|
|
/* real mode or vm86 mode */
|
|
if (!check_vm86_iopl(s)) {
|
|
break;
|
|
}
|
|
gen_helper_iret_real(cpu_env, tcg_const_i32(dflag - 1));
|
|
} else {
|
|
gen_helper_iret_protected(cpu_env, tcg_constant_i32(dflag - 1),
|
|
eip_next_i32(s));
|
|
}
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
s->base.is_jmp = DISAS_EOB_ONLY;
|
|
break;
|
|
case 0xe8: /* call im */
|
|
{
|
|
int diff = (dflag != MO_16
|
|
? (int32_t)insn_get(env, s, MO_32)
|
|
: (int16_t)insn_get(env, s, MO_16));
|
|
gen_push_v(s, eip_next_tl(s));
|
|
gen_bnd_jmp(s);
|
|
gen_jmp_rel(s, dflag, diff, 0);
|
|
}
|
|
break;
|
|
case 0x9a: /* lcall im */
|
|
{
|
|
unsigned int selector, offset;
|
|
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
ot = dflag;
|
|
offset = insn_get(env, s, ot);
|
|
selector = insn_get(env, s, MO_16);
|
|
|
|
tcg_gen_movi_tl(s->T0, selector);
|
|
tcg_gen_movi_tl(s->T1, offset);
|
|
}
|
|
goto do_lcall;
|
|
case 0xe9: /* jmp im */
|
|
{
|
|
int diff = (dflag != MO_16
|
|
? (int32_t)insn_get(env, s, MO_32)
|
|
: (int16_t)insn_get(env, s, MO_16));
|
|
gen_bnd_jmp(s);
|
|
gen_jmp_rel(s, dflag, diff, 0);
|
|
}
|
|
break;
|
|
case 0xea: /* ljmp im */
|
|
{
|
|
unsigned int selector, offset;
|
|
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
ot = dflag;
|
|
offset = insn_get(env, s, ot);
|
|
selector = insn_get(env, s, MO_16);
|
|
|
|
tcg_gen_movi_tl(s->T0, selector);
|
|
tcg_gen_movi_tl(s->T1, offset);
|
|
}
|
|
goto do_ljmp;
|
|
case 0xeb: /* jmp Jb */
|
|
{
|
|
int diff = (int8_t)insn_get(env, s, MO_8);
|
|
gen_jmp_rel(s, dflag, diff, 0);
|
|
}
|
|
break;
|
|
case 0x70 ... 0x7f: /* jcc Jb */
|
|
{
|
|
int diff = (int8_t)insn_get(env, s, MO_8);
|
|
gen_bnd_jmp(s);
|
|
gen_jcc(s, b, diff);
|
|
}
|
|
break;
|
|
case 0x180 ... 0x18f: /* jcc Jv */
|
|
{
|
|
int diff = (dflag != MO_16
|
|
? (int32_t)insn_get(env, s, MO_32)
|
|
: (int16_t)insn_get(env, s, MO_16));
|
|
gen_bnd_jmp(s);
|
|
gen_jcc(s, b, diff);
|
|
}
|
|
break;
|
|
|
|
case 0x190 ... 0x19f: /* setcc Gv */
|
|
modrm = x86_ldub_code(env, s);
|
|
gen_setcc1(s, b, s->T0);
|
|
gen_ldst_modrm(env, s, modrm, MO_8, OR_TMP0, 1);
|
|
break;
|
|
case 0x140 ... 0x14f: /* cmov Gv, Ev */
|
|
if (!(s->cpuid_features & CPUID_CMOV)) {
|
|
goto illegal_op;
|
|
}
|
|
ot = dflag;
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
gen_cmovcc1(env, s, ot, b, modrm, reg);
|
|
break;
|
|
|
|
/************************/
|
|
/* flags */
|
|
case 0x9c: /* pushf */
|
|
gen_svm_check_intercept(s, SVM_EXIT_PUSHF);
|
|
if (check_vm86_iopl(s)) {
|
|
gen_update_cc_op(s);
|
|
gen_helper_read_eflags(s->T0, cpu_env);
|
|
gen_push_v(s, s->T0);
|
|
}
|
|
break;
|
|
case 0x9d: /* popf */
|
|
gen_svm_check_intercept(s, SVM_EXIT_POPF);
|
|
if (check_vm86_iopl(s)) {
|
|
ot = gen_pop_T0(s);
|
|
if (CPL(s) == 0) {
|
|
if (dflag != MO_16) {
|
|
gen_helper_write_eflags(cpu_env, s->T0,
|
|
tcg_const_i32((TF_MASK | AC_MASK |
|
|
ID_MASK | NT_MASK |
|
|
IF_MASK |
|
|
IOPL_MASK)));
|
|
} else {
|
|
gen_helper_write_eflags(cpu_env, s->T0,
|
|
tcg_const_i32((TF_MASK | AC_MASK |
|
|
ID_MASK | NT_MASK |
|
|
IF_MASK | IOPL_MASK)
|
|
& 0xffff));
|
|
}
|
|
} else {
|
|
if (CPL(s) <= IOPL(s)) {
|
|
if (dflag != MO_16) {
|
|
gen_helper_write_eflags(cpu_env, s->T0,
|
|
tcg_const_i32((TF_MASK |
|
|
AC_MASK |
|
|
ID_MASK |
|
|
NT_MASK |
|
|
IF_MASK)));
|
|
} else {
|
|
gen_helper_write_eflags(cpu_env, s->T0,
|
|
tcg_const_i32((TF_MASK |
|
|
AC_MASK |
|
|
ID_MASK |
|
|
NT_MASK |
|
|
IF_MASK)
|
|
& 0xffff));
|
|
}
|
|
} else {
|
|
if (dflag != MO_16) {
|
|
gen_helper_write_eflags(cpu_env, s->T0,
|
|
tcg_const_i32((TF_MASK | AC_MASK |
|
|
ID_MASK | NT_MASK)));
|
|
} else {
|
|
gen_helper_write_eflags(cpu_env, s->T0,
|
|
tcg_const_i32((TF_MASK | AC_MASK |
|
|
ID_MASK | NT_MASK)
|
|
& 0xffff));
|
|
}
|
|
}
|
|
}
|
|
gen_pop_update(s, ot);
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
/* abort translation because TF/AC flag may change */
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
}
|
|
break;
|
|
case 0x9e: /* sahf */
|
|
if (CODE64(s) && !(s->cpuid_ext3_features & CPUID_EXT3_LAHF_LM))
|
|
goto illegal_op;
|
|
tcg_gen_shri_tl(s->T0, cpu_regs[R_EAX], 8);
|
|
gen_compute_eflags(s);
|
|
tcg_gen_andi_tl(cpu_cc_src, cpu_cc_src, CC_O);
|
|
tcg_gen_andi_tl(s->T0, s->T0, CC_S | CC_Z | CC_A | CC_P | CC_C);
|
|
tcg_gen_or_tl(cpu_cc_src, cpu_cc_src, s->T0);
|
|
break;
|
|
case 0x9f: /* lahf */
|
|
if (CODE64(s) && !(s->cpuid_ext3_features & CPUID_EXT3_LAHF_LM))
|
|
goto illegal_op;
|
|
gen_compute_eflags(s);
|
|
/* Note: gen_compute_eflags() only gives the condition codes */
|
|
tcg_gen_ori_tl(s->T0, cpu_cc_src, 0x02);
|
|
tcg_gen_deposit_tl(cpu_regs[R_EAX], cpu_regs[R_EAX], s->T0, 8, 8);
|
|
break;
|
|
case 0xf5: /* cmc */
|
|
gen_compute_eflags(s);
|
|
tcg_gen_xori_tl(cpu_cc_src, cpu_cc_src, CC_C);
|
|
break;
|
|
case 0xf8: /* clc */
|
|
gen_compute_eflags(s);
|
|
tcg_gen_andi_tl(cpu_cc_src, cpu_cc_src, ~CC_C);
|
|
break;
|
|
case 0xf9: /* stc */
|
|
gen_compute_eflags(s);
|
|
tcg_gen_ori_tl(cpu_cc_src, cpu_cc_src, CC_C);
|
|
break;
|
|
case 0xfc: /* cld */
|
|
tcg_gen_movi_i32(s->tmp2_i32, 1);
|
|
tcg_gen_st_i32(s->tmp2_i32, cpu_env, offsetof(CPUX86State, df));
|
|
break;
|
|
case 0xfd: /* std */
|
|
tcg_gen_movi_i32(s->tmp2_i32, -1);
|
|
tcg_gen_st_i32(s->tmp2_i32, cpu_env, offsetof(CPUX86State, df));
|
|
break;
|
|
|
|
/************************/
|
|
/* bit operations */
|
|
case 0x1ba: /* bt/bts/btr/btc Gv, im */
|
|
ot = dflag;
|
|
modrm = x86_ldub_code(env, s);
|
|
op = (modrm >> 3) & 7;
|
|
mod = (modrm >> 6) & 3;
|
|
rm = (modrm & 7) | REX_B(s);
|
|
if (mod != 3) {
|
|
s->rip_offset = 1;
|
|
gen_lea_modrm(env, s, modrm);
|
|
if (!(s->prefix & PREFIX_LOCK)) {
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
}
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T0, rm);
|
|
}
|
|
/* load shift */
|
|
val = x86_ldub_code(env, s);
|
|
tcg_gen_movi_tl(s->T1, val);
|
|
if (op < 4)
|
|
goto unknown_op;
|
|
op -= 4;
|
|
goto bt_op;
|
|
case 0x1a3: /* bt Gv, Ev */
|
|
op = 0;
|
|
goto do_btx;
|
|
case 0x1ab: /* bts */
|
|
op = 1;
|
|
goto do_btx;
|
|
case 0x1b3: /* btr */
|
|
op = 2;
|
|
goto do_btx;
|
|
case 0x1bb: /* btc */
|
|
op = 3;
|
|
do_btx:
|
|
ot = dflag;
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
mod = (modrm >> 6) & 3;
|
|
rm = (modrm & 7) | REX_B(s);
|
|
gen_op_mov_v_reg(s, MO_32, s->T1, reg);
|
|
if (mod != 3) {
|
|
AddressParts a = gen_lea_modrm_0(env, s, modrm);
|
|
/* specific case: we need to add a displacement */
|
|
gen_exts(ot, s->T1);
|
|
tcg_gen_sari_tl(s->tmp0, s->T1, 3 + ot);
|
|
tcg_gen_shli_tl(s->tmp0, s->tmp0, ot);
|
|
tcg_gen_add_tl(s->A0, gen_lea_modrm_1(s, a, false), s->tmp0);
|
|
gen_lea_v_seg(s, s->aflag, s->A0, a.def_seg, s->override);
|
|
if (!(s->prefix & PREFIX_LOCK)) {
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
}
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, s->T0, rm);
|
|
}
|
|
bt_op:
|
|
tcg_gen_andi_tl(s->T1, s->T1, (1 << (3 + ot)) - 1);
|
|
tcg_gen_movi_tl(s->tmp0, 1);
|
|
tcg_gen_shl_tl(s->tmp0, s->tmp0, s->T1);
|
|
if (s->prefix & PREFIX_LOCK) {
|
|
switch (op) {
|
|
case 0: /* bt */
|
|
/* Needs no atomic ops; we surpressed the normal
|
|
memory load for LOCK above so do it now. */
|
|
gen_op_ld_v(s, ot, s->T0, s->A0);
|
|
break;
|
|
case 1: /* bts */
|
|
tcg_gen_atomic_fetch_or_tl(s->T0, s->A0, s->tmp0,
|
|
s->mem_index, ot | MO_LE);
|
|
break;
|
|
case 2: /* btr */
|
|
tcg_gen_not_tl(s->tmp0, s->tmp0);
|
|
tcg_gen_atomic_fetch_and_tl(s->T0, s->A0, s->tmp0,
|
|
s->mem_index, ot | MO_LE);
|
|
break;
|
|
default:
|
|
case 3: /* btc */
|
|
tcg_gen_atomic_fetch_xor_tl(s->T0, s->A0, s->tmp0,
|
|
s->mem_index, ot | MO_LE);
|
|
break;
|
|
}
|
|
tcg_gen_shr_tl(s->tmp4, s->T0, s->T1);
|
|
} else {
|
|
tcg_gen_shr_tl(s->tmp4, s->T0, s->T1);
|
|
switch (op) {
|
|
case 0: /* bt */
|
|
/* Data already loaded; nothing to do. */
|
|
break;
|
|
case 1: /* bts */
|
|
tcg_gen_or_tl(s->T0, s->T0, s->tmp0);
|
|
break;
|
|
case 2: /* btr */
|
|
tcg_gen_andc_tl(s->T0, s->T0, s->tmp0);
|
|
break;
|
|
default:
|
|
case 3: /* btc */
|
|
tcg_gen_xor_tl(s->T0, s->T0, s->tmp0);
|
|
break;
|
|
}
|
|
if (op != 0) {
|
|
if (mod != 3) {
|
|
gen_op_st_v(s, ot, s->T0, s->A0);
|
|
} else {
|
|
gen_op_mov_reg_v(s, ot, rm, s->T0);
|
|
}
|
|
}
|
|
}
|
|
|
|
/* Delay all CC updates until after the store above. Note that
|
|
C is the result of the test, Z is unchanged, and the others
|
|
are all undefined. */
|
|
switch (s->cc_op) {
|
|
case CC_OP_MULB ... CC_OP_MULQ:
|
|
case CC_OP_ADDB ... CC_OP_ADDQ:
|
|
case CC_OP_ADCB ... CC_OP_ADCQ:
|
|
case CC_OP_SUBB ... CC_OP_SUBQ:
|
|
case CC_OP_SBBB ... CC_OP_SBBQ:
|
|
case CC_OP_LOGICB ... CC_OP_LOGICQ:
|
|
case CC_OP_INCB ... CC_OP_INCQ:
|
|
case CC_OP_DECB ... CC_OP_DECQ:
|
|
case CC_OP_SHLB ... CC_OP_SHLQ:
|
|
case CC_OP_SARB ... CC_OP_SARQ:
|
|
case CC_OP_BMILGB ... CC_OP_BMILGQ:
|
|
/* Z was going to be computed from the non-zero status of CC_DST.
|
|
We can get that same Z value (and the new C value) by leaving
|
|
CC_DST alone, setting CC_SRC, and using a CC_OP_SAR of the
|
|
same width. */
|
|
tcg_gen_mov_tl(cpu_cc_src, s->tmp4);
|
|
set_cc_op(s, ((s->cc_op - CC_OP_MULB) & 3) + CC_OP_SARB);
|
|
break;
|
|
default:
|
|
/* Otherwise, generate EFLAGS and replace the C bit. */
|
|
gen_compute_eflags(s);
|
|
tcg_gen_deposit_tl(cpu_cc_src, cpu_cc_src, s->tmp4,
|
|
ctz32(CC_C), 1);
|
|
break;
|
|
}
|
|
break;
|
|
case 0x1bc: /* bsf / tzcnt */
|
|
case 0x1bd: /* bsr / lzcnt */
|
|
ot = dflag;
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
|
|
gen_extu(ot, s->T0);
|
|
|
|
/* Note that lzcnt and tzcnt are in different extensions. */
|
|
if ((prefixes & PREFIX_REPZ)
|
|
&& (b & 1
|
|
? s->cpuid_ext3_features & CPUID_EXT3_ABM
|
|
: s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_BMI1)) {
|
|
int size = 8 << ot;
|
|
/* For lzcnt/tzcnt, C bit is defined related to the input. */
|
|
tcg_gen_mov_tl(cpu_cc_src, s->T0);
|
|
if (b & 1) {
|
|
/* For lzcnt, reduce the target_ulong result by the
|
|
number of zeros that we expect to find at the top. */
|
|
tcg_gen_clzi_tl(s->T0, s->T0, TARGET_LONG_BITS);
|
|
tcg_gen_subi_tl(s->T0, s->T0, TARGET_LONG_BITS - size);
|
|
} else {
|
|
/* For tzcnt, a zero input must return the operand size. */
|
|
tcg_gen_ctzi_tl(s->T0, s->T0, size);
|
|
}
|
|
/* For lzcnt/tzcnt, Z bit is defined related to the result. */
|
|
gen_op_update1_cc(s);
|
|
set_cc_op(s, CC_OP_BMILGB + ot);
|
|
} else {
|
|
/* For bsr/bsf, only the Z bit is defined and it is related
|
|
to the input and not the result. */
|
|
tcg_gen_mov_tl(cpu_cc_dst, s->T0);
|
|
set_cc_op(s, CC_OP_LOGICB + ot);
|
|
|
|
/* ??? The manual says that the output is undefined when the
|
|
input is zero, but real hardware leaves it unchanged, and
|
|
real programs appear to depend on that. Accomplish this
|
|
by passing the output as the value to return upon zero. */
|
|
if (b & 1) {
|
|
/* For bsr, return the bit index of the first 1 bit,
|
|
not the count of leading zeros. */
|
|
tcg_gen_xori_tl(s->T1, cpu_regs[reg], TARGET_LONG_BITS - 1);
|
|
tcg_gen_clz_tl(s->T0, s->T0, s->T1);
|
|
tcg_gen_xori_tl(s->T0, s->T0, TARGET_LONG_BITS - 1);
|
|
} else {
|
|
tcg_gen_ctz_tl(s->T0, s->T0, cpu_regs[reg]);
|
|
}
|
|
}
|
|
gen_op_mov_reg_v(s, ot, reg, s->T0);
|
|
break;
|
|
/************************/
|
|
/* bcd */
|
|
case 0x27: /* daa */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
gen_update_cc_op(s);
|
|
gen_helper_daa(cpu_env);
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
break;
|
|
case 0x2f: /* das */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
gen_update_cc_op(s);
|
|
gen_helper_das(cpu_env);
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
break;
|
|
case 0x37: /* aaa */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
gen_update_cc_op(s);
|
|
gen_helper_aaa(cpu_env);
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
break;
|
|
case 0x3f: /* aas */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
gen_update_cc_op(s);
|
|
gen_helper_aas(cpu_env);
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
break;
|
|
case 0xd4: /* aam */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
val = x86_ldub_code(env, s);
|
|
if (val == 0) {
|
|
gen_exception(s, EXCP00_DIVZ);
|
|
} else {
|
|
gen_helper_aam(cpu_env, tcg_const_i32(val));
|
|
set_cc_op(s, CC_OP_LOGICB);
|
|
}
|
|
break;
|
|
case 0xd5: /* aad */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
val = x86_ldub_code(env, s);
|
|
gen_helper_aad(cpu_env, tcg_const_i32(val));
|
|
set_cc_op(s, CC_OP_LOGICB);
|
|
break;
|
|
/************************/
|
|
/* misc */
|
|
case 0x90: /* nop */
|
|
/* XXX: correct lock test for all insn */
|
|
if (prefixes & PREFIX_LOCK) {
|
|
goto illegal_op;
|
|
}
|
|
/* If REX_B is set, then this is xchg eax, r8d, not a nop. */
|
|
if (REX_B(s)) {
|
|
goto do_xchg_reg_eax;
|
|
}
|
|
if (prefixes & PREFIX_REPZ) {
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_pause(cpu_env, cur_insn_len_i32(s));
|
|
s->base.is_jmp = DISAS_NORETURN;
|
|
}
|
|
break;
|
|
case 0x9b: /* fwait */
|
|
if ((s->flags & (HF_MP_MASK | HF_TS_MASK)) ==
|
|
(HF_MP_MASK | HF_TS_MASK)) {
|
|
gen_exception(s, EXCP07_PREX);
|
|
} else {
|
|
gen_helper_fwait(cpu_env);
|
|
}
|
|
break;
|
|
case 0xcc: /* int3 */
|
|
gen_interrupt(s, EXCP03_INT3);
|
|
break;
|
|
case 0xcd: /* int N */
|
|
val = x86_ldub_code(env, s);
|
|
if (check_vm86_iopl(s)) {
|
|
gen_interrupt(s, val);
|
|
}
|
|
break;
|
|
case 0xce: /* into */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_into(cpu_env, cur_insn_len_i32(s));
|
|
break;
|
|
#ifdef WANT_ICEBP
|
|
case 0xf1: /* icebp (undocumented, exits to external debugger) */
|
|
gen_svm_check_intercept(s, SVM_EXIT_ICEBP);
|
|
gen_debug(s);
|
|
break;
|
|
#endif
|
|
case 0xfa: /* cli */
|
|
if (check_iopl(s)) {
|
|
gen_reset_eflags(s, IF_MASK);
|
|
}
|
|
break;
|
|
case 0xfb: /* sti */
|
|
if (check_iopl(s)) {
|
|
gen_set_eflags(s, IF_MASK);
|
|
/* interruptions are enabled only the first insn after sti */
|
|
gen_update_eip_next(s);
|
|
gen_eob_inhibit_irq(s, true);
|
|
}
|
|
break;
|
|
case 0x62: /* bound */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
ot = dflag;
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = (modrm >> 3) & 7;
|
|
mod = (modrm >> 6) & 3;
|
|
if (mod == 3)
|
|
goto illegal_op;
|
|
gen_op_mov_v_reg(s, ot, s->T0, reg);
|
|
gen_lea_modrm(env, s, modrm);
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0);
|
|
if (ot == MO_16) {
|
|
gen_helper_boundw(cpu_env, s->A0, s->tmp2_i32);
|
|
} else {
|
|
gen_helper_boundl(cpu_env, s->A0, s->tmp2_i32);
|
|
}
|
|
break;
|
|
case 0x1c8 ... 0x1cf: /* bswap reg */
|
|
reg = (b & 7) | REX_B(s);
|
|
#ifdef TARGET_X86_64
|
|
if (dflag == MO_64) {
|
|
tcg_gen_bswap64_i64(cpu_regs[reg], cpu_regs[reg]);
|
|
break;
|
|
}
|
|
#endif
|
|
tcg_gen_bswap32_tl(cpu_regs[reg], cpu_regs[reg], TCG_BSWAP_OZ);
|
|
break;
|
|
case 0xd6: /* salc */
|
|
if (CODE64(s))
|
|
goto illegal_op;
|
|
gen_compute_eflags_c(s, s->T0);
|
|
tcg_gen_neg_tl(s->T0, s->T0);
|
|
gen_op_mov_reg_v(s, MO_8, R_EAX, s->T0);
|
|
break;
|
|
case 0xe0: /* loopnz */
|
|
case 0xe1: /* loopz */
|
|
case 0xe2: /* loop */
|
|
case 0xe3: /* jecxz */
|
|
{
|
|
TCGLabel *l1, *l2;
|
|
int diff = (int8_t)insn_get(env, s, MO_8);
|
|
|
|
l1 = gen_new_label();
|
|
l2 = gen_new_label();
|
|
gen_update_cc_op(s);
|
|
b &= 3;
|
|
switch(b) {
|
|
case 0: /* loopnz */
|
|
case 1: /* loopz */
|
|
gen_op_add_reg_im(s, s->aflag, R_ECX, -1);
|
|
gen_op_jz_ecx(s, l2);
|
|
gen_jcc1(s, (JCC_Z << 1) | (b ^ 1), l1);
|
|
break;
|
|
case 2: /* loop */
|
|
gen_op_add_reg_im(s, s->aflag, R_ECX, -1);
|
|
gen_op_jnz_ecx(s, l1);
|
|
break;
|
|
default:
|
|
case 3: /* jcxz */
|
|
gen_op_jz_ecx(s, l1);
|
|
break;
|
|
}
|
|
|
|
gen_set_label(l2);
|
|
gen_jmp_rel_csize(s, 0, 1);
|
|
|
|
gen_set_label(l1);
|
|
gen_jmp_rel(s, dflag, diff, 0);
|
|
}
|
|
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(cpu_env);
|
|
} else {
|
|
gen_helper_wrmsr(cpu_env);
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
}
|
|
}
|
|
break;
|
|
case 0x131: /* rdtsc */
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
|
|
gen_io_start();
|
|
s->base.is_jmp = DISAS_TOO_MANY;
|
|
}
|
|
gen_helper_rdtsc(cpu_env);
|
|
break;
|
|
case 0x133: /* rdpmc */
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_rdpmc(cpu_env);
|
|
s->base.is_jmp = DISAS_NORETURN;
|
|
break;
|
|
case 0x134: /* sysenter */
|
|
/* For Intel SYSENTER is valid on 64-bit */
|
|
if (CODE64(s) && env->cpuid_vendor1 != CPUID_VENDOR_INTEL_1)
|
|
goto illegal_op;
|
|
if (!PE(s)) {
|
|
gen_exception_gpf(s);
|
|
} else {
|
|
gen_helper_sysenter(cpu_env);
|
|
s->base.is_jmp = DISAS_EOB_ONLY;
|
|
}
|
|
break;
|
|
case 0x135: /* sysexit */
|
|
/* For Intel SYSEXIT is valid on 64-bit */
|
|
if (CODE64(s) && env->cpuid_vendor1 != CPUID_VENDOR_INTEL_1)
|
|
goto illegal_op;
|
|
if (!PE(s)) {
|
|
gen_exception_gpf(s);
|
|
} else {
|
|
gen_helper_sysexit(cpu_env, tcg_const_i32(dflag - 1));
|
|
s->base.is_jmp = DISAS_EOB_ONLY;
|
|
}
|
|
break;
|
|
#ifdef TARGET_X86_64
|
|
case 0x105: /* syscall */
|
|
/* XXX: is it usable in real mode ? */
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_syscall(cpu_env, cur_insn_len_i32(s));
|
|
/* 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. */
|
|
gen_eob_worker(s, false, true);
|
|
break;
|
|
case 0x107: /* sysret */
|
|
if (!PE(s)) {
|
|
gen_exception_gpf(s);
|
|
} else {
|
|
gen_helper_sysret(cpu_env, tcg_const_i32(dflag - 1));
|
|
/* condition codes are modified only in long mode */
|
|
if (LMA(s)) {
|
|
set_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. */
|
|
gen_eob_worker(s, false, true);
|
|
}
|
|
break;
|
|
#endif
|
|
case 0x1a2: /* cpuid */
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_cpuid(cpu_env);
|
|
break;
|
|
case 0xf4: /* hlt */
|
|
if (check_cpl0(s)) {
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_hlt(cpu_env, cur_insn_len_i32(s));
|
|
s->base.is_jmp = DISAS_NORETURN;
|
|
}
|
|
break;
|
|
case 0x100:
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
op = (modrm >> 3) & 7;
|
|
switch(op) {
|
|
case 0: /* sldt */
|
|
if (!PE(s) || VM86(s))
|
|
goto illegal_op;
|
|
if (s->flags & HF_UMIP_MASK && !check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_svm_check_intercept(s, SVM_EXIT_LDTR_READ);
|
|
tcg_gen_ld32u_tl(s->T0, cpu_env,
|
|
offsetof(CPUX86State, ldt.selector));
|
|
ot = mod == 3 ? dflag : MO_16;
|
|
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 1);
|
|
break;
|
|
case 2: /* lldt */
|
|
if (!PE(s) || VM86(s))
|
|
goto illegal_op;
|
|
if (check_cpl0(s)) {
|
|
gen_svm_check_intercept(s, SVM_EXIT_LDTR_WRITE);
|
|
gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0);
|
|
gen_helper_lldt(cpu_env, s->tmp2_i32);
|
|
}
|
|
break;
|
|
case 1: /* str */
|
|
if (!PE(s) || VM86(s))
|
|
goto illegal_op;
|
|
if (s->flags & HF_UMIP_MASK && !check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_svm_check_intercept(s, SVM_EXIT_TR_READ);
|
|
tcg_gen_ld32u_tl(s->T0, cpu_env,
|
|
offsetof(CPUX86State, tr.selector));
|
|
ot = mod == 3 ? dflag : MO_16;
|
|
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 1);
|
|
break;
|
|
case 3: /* ltr */
|
|
if (!PE(s) || VM86(s))
|
|
goto illegal_op;
|
|
if (check_cpl0(s)) {
|
|
gen_svm_check_intercept(s, SVM_EXIT_TR_WRITE);
|
|
gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, s->T0);
|
|
gen_helper_ltr(cpu_env, s->tmp2_i32);
|
|
}
|
|
break;
|
|
case 4: /* verr */
|
|
case 5: /* verw */
|
|
if (!PE(s) || VM86(s))
|
|
goto illegal_op;
|
|
gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
|
|
gen_update_cc_op(s);
|
|
if (op == 4) {
|
|
gen_helper_verr(cpu_env, s->T0);
|
|
} else {
|
|
gen_helper_verw(cpu_env, s->T0);
|
|
}
|
|
set_cc_op(s, CC_OP_EFLAGS);
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
break;
|
|
|
|
case 0x101:
|
|
modrm = x86_ldub_code(env, s);
|
|
switch (modrm) {
|
|
CASE_MODRM_MEM_OP(0): /* sgdt */
|
|
if (s->flags & HF_UMIP_MASK && !check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_svm_check_intercept(s, SVM_EXIT_GDTR_READ);
|
|
gen_lea_modrm(env, s, modrm);
|
|
tcg_gen_ld32u_tl(s->T0,
|
|
cpu_env, offsetof(CPUX86State, gdt.limit));
|
|
gen_op_st_v(s, MO_16, s->T0, s->A0);
|
|
gen_add_A0_im(s, 2);
|
|
tcg_gen_ld_tl(s->T0, cpu_env, offsetof(CPUX86State, gdt.base));
|
|
if (dflag == MO_16) {
|
|
tcg_gen_andi_tl(s->T0, s->T0, 0xffffff);
|
|
}
|
|
gen_op_st_v(s, CODE64(s) + MO_32, s->T0, s->A0);
|
|
break;
|
|
|
|
case 0xc8: /* monitor */
|
|
if (!(s->cpuid_ext_features & CPUID_EXT_MONITOR) || CPL(s) != 0) {
|
|
goto illegal_op;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
tcg_gen_mov_tl(s->A0, cpu_regs[R_EAX]);
|
|
gen_extu(s->aflag, s->A0);
|
|
gen_add_A0_ds_seg(s);
|
|
gen_helper_monitor(cpu_env, s->A0);
|
|
break;
|
|
|
|
case 0xc9: /* mwait */
|
|
if (!(s->cpuid_ext_features & CPUID_EXT_MONITOR) || CPL(s) != 0) {
|
|
goto illegal_op;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_mwait(cpu_env, cur_insn_len_i32(s));
|
|
s->base.is_jmp = DISAS_NORETURN;
|
|
break;
|
|
|
|
case 0xca: /* clac */
|
|
if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_SMAP)
|
|
|| CPL(s) != 0) {
|
|
goto illegal_op;
|
|
}
|
|
gen_reset_eflags(s, AC_MASK);
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
break;
|
|
|
|
case 0xcb: /* stac */
|
|
if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_SMAP)
|
|
|| CPL(s) != 0) {
|
|
goto illegal_op;
|
|
}
|
|
gen_set_eflags(s, AC_MASK);
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
break;
|
|
|
|
CASE_MODRM_MEM_OP(1): /* sidt */
|
|
if (s->flags & HF_UMIP_MASK && !check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_svm_check_intercept(s, SVM_EXIT_IDTR_READ);
|
|
gen_lea_modrm(env, s, modrm);
|
|
tcg_gen_ld32u_tl(s->T0, cpu_env, offsetof(CPUX86State, idt.limit));
|
|
gen_op_st_v(s, MO_16, s->T0, s->A0);
|
|
gen_add_A0_im(s, 2);
|
|
tcg_gen_ld_tl(s->T0, cpu_env, offsetof(CPUX86State, idt.base));
|
|
if (dflag == MO_16) {
|
|
tcg_gen_andi_tl(s->T0, s->T0, 0xffffff);
|
|
}
|
|
gen_op_st_v(s, CODE64(s) + MO_32, s->T0, s->A0);
|
|
break;
|
|
|
|
case 0xd0: /* xgetbv */
|
|
if ((s->cpuid_ext_features & CPUID_EXT_XSAVE) == 0
|
|
|| (s->prefix & (PREFIX_LOCK | PREFIX_DATA
|
|
| PREFIX_REPZ | PREFIX_REPNZ))) {
|
|
goto illegal_op;
|
|
}
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, cpu_regs[R_ECX]);
|
|
gen_helper_xgetbv(s->tmp1_i64, cpu_env, s->tmp2_i32);
|
|
tcg_gen_extr_i64_tl(cpu_regs[R_EAX], cpu_regs[R_EDX], s->tmp1_i64);
|
|
break;
|
|
|
|
case 0xd1: /* xsetbv */
|
|
if ((s->cpuid_ext_features & CPUID_EXT_XSAVE) == 0
|
|
|| (s->prefix & (PREFIX_LOCK | PREFIX_DATA
|
|
| PREFIX_REPZ | PREFIX_REPNZ))) {
|
|
goto illegal_op;
|
|
}
|
|
if (!check_cpl0(s)) {
|
|
break;
|
|
}
|
|
tcg_gen_concat_tl_i64(s->tmp1_i64, cpu_regs[R_EAX],
|
|
cpu_regs[R_EDX]);
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, cpu_regs[R_ECX]);
|
|
gen_helper_xsetbv(cpu_env, s->tmp2_i32, s->tmp1_i64);
|
|
/* End TB because translation flags may change. */
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
break;
|
|
|
|
case 0xd8: /* VMRUN */
|
|
if (!SVME(s) || !PE(s)) {
|
|
goto illegal_op;
|
|
}
|
|
if (!check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_vmrun(cpu_env, tcg_const_i32(s->aflag - 1),
|
|
cur_insn_len_i32(s));
|
|
tcg_gen_exit_tb(NULL, 0);
|
|
s->base.is_jmp = DISAS_NORETURN;
|
|
break;
|
|
|
|
case 0xd9: /* VMMCALL */
|
|
if (!SVME(s)) {
|
|
goto illegal_op;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_vmmcall(cpu_env);
|
|
break;
|
|
|
|
case 0xda: /* VMLOAD */
|
|
if (!SVME(s) || !PE(s)) {
|
|
goto illegal_op;
|
|
}
|
|
if (!check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_vmload(cpu_env, tcg_const_i32(s->aflag - 1));
|
|
break;
|
|
|
|
case 0xdb: /* VMSAVE */
|
|
if (!SVME(s) || !PE(s)) {
|
|
goto illegal_op;
|
|
}
|
|
if (!check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_vmsave(cpu_env, tcg_const_i32(s->aflag - 1));
|
|
break;
|
|
|
|
case 0xdc: /* STGI */
|
|
if ((!SVME(s) && !(s->cpuid_ext3_features & CPUID_EXT3_SKINIT))
|
|
|| !PE(s)) {
|
|
goto illegal_op;
|
|
}
|
|
if (!check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_helper_stgi(cpu_env);
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
break;
|
|
|
|
case 0xdd: /* CLGI */
|
|
if (!SVME(s) || !PE(s)) {
|
|
goto illegal_op;
|
|
}
|
|
if (!check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
gen_helper_clgi(cpu_env);
|
|
break;
|
|
|
|
case 0xde: /* SKINIT */
|
|
if ((!SVME(s) && !(s->cpuid_ext3_features & CPUID_EXT3_SKINIT))
|
|
|| !PE(s)) {
|
|
goto illegal_op;
|
|
}
|
|
gen_svm_check_intercept(s, SVM_EXIT_SKINIT);
|
|
/* If not intercepted, not implemented -- raise #UD. */
|
|
goto illegal_op;
|
|
|
|
case 0xdf: /* INVLPGA */
|
|
if (!SVME(s) || !PE(s)) {
|
|
goto illegal_op;
|
|
}
|
|
if (!check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_svm_check_intercept(s, SVM_EXIT_INVLPGA);
|
|
if (s->aflag == MO_64) {
|
|
tcg_gen_mov_tl(s->A0, cpu_regs[R_EAX]);
|
|
} else {
|
|
tcg_gen_ext32u_tl(s->A0, cpu_regs[R_EAX]);
|
|
}
|
|
gen_helper_flush_page(cpu_env, s->A0);
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
break;
|
|
|
|
CASE_MODRM_MEM_OP(2): /* lgdt */
|
|
if (!check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_svm_check_intercept(s, SVM_EXIT_GDTR_WRITE);
|
|
gen_lea_modrm(env, s, modrm);
|
|
gen_op_ld_v(s, MO_16, s->T1, s->A0);
|
|
gen_add_A0_im(s, 2);
|
|
gen_op_ld_v(s, CODE64(s) + MO_32, s->T0, s->A0);
|
|
if (dflag == MO_16) {
|
|
tcg_gen_andi_tl(s->T0, s->T0, 0xffffff);
|
|
}
|
|
tcg_gen_st_tl(s->T0, cpu_env, offsetof(CPUX86State, gdt.base));
|
|
tcg_gen_st32_tl(s->T1, cpu_env, offsetof(CPUX86State, gdt.limit));
|
|
break;
|
|
|
|
CASE_MODRM_MEM_OP(3): /* lidt */
|
|
if (!check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_svm_check_intercept(s, SVM_EXIT_IDTR_WRITE);
|
|
gen_lea_modrm(env, s, modrm);
|
|
gen_op_ld_v(s, MO_16, s->T1, s->A0);
|
|
gen_add_A0_im(s, 2);
|
|
gen_op_ld_v(s, CODE64(s) + MO_32, s->T0, s->A0);
|
|
if (dflag == MO_16) {
|
|
tcg_gen_andi_tl(s->T0, s->T0, 0xffffff);
|
|
}
|
|
tcg_gen_st_tl(s->T0, cpu_env, offsetof(CPUX86State, idt.base));
|
|
tcg_gen_st32_tl(s->T1, cpu_env, offsetof(CPUX86State, idt.limit));
|
|
break;
|
|
|
|
CASE_MODRM_OP(4): /* smsw */
|
|
if (s->flags & HF_UMIP_MASK && !check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_svm_check_intercept(s, SVM_EXIT_READ_CR0);
|
|
tcg_gen_ld_tl(s->T0, cpu_env, offsetof(CPUX86State, cr[0]));
|
|
/*
|
|
* In 32-bit mode, the higher 16 bits of the destination
|
|
* register are undefined. In practice CR0[31:0] is stored
|
|
* just like in 64-bit mode.
|
|
*/
|
|
mod = (modrm >> 6) & 3;
|
|
ot = (mod != 3 ? MO_16 : s->dflag);
|
|
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 1);
|
|
break;
|
|
case 0xee: /* rdpkru */
|
|
if (prefixes & PREFIX_LOCK) {
|
|
goto illegal_op;
|
|
}
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, cpu_regs[R_ECX]);
|
|
gen_helper_rdpkru(s->tmp1_i64, cpu_env, s->tmp2_i32);
|
|
tcg_gen_extr_i64_tl(cpu_regs[R_EAX], cpu_regs[R_EDX], s->tmp1_i64);
|
|
break;
|
|
case 0xef: /* wrpkru */
|
|
if (prefixes & PREFIX_LOCK) {
|
|
goto illegal_op;
|
|
}
|
|
tcg_gen_concat_tl_i64(s->tmp1_i64, cpu_regs[R_EAX],
|
|
cpu_regs[R_EDX]);
|
|
tcg_gen_trunc_tl_i32(s->tmp2_i32, cpu_regs[R_ECX]);
|
|
gen_helper_wrpkru(cpu_env, s->tmp2_i32, s->tmp1_i64);
|
|
break;
|
|
|
|
CASE_MODRM_OP(6): /* lmsw */
|
|
if (!check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_svm_check_intercept(s, SVM_EXIT_WRITE_CR0);
|
|
gen_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
|
|
/*
|
|
* Only the 4 lower bits of CR0 are modified.
|
|
* PE cannot be set to zero if already set to one.
|
|
*/
|
|
tcg_gen_ld_tl(s->T1, cpu_env, offsetof(CPUX86State, cr[0]));
|
|
tcg_gen_andi_tl(s->T0, s->T0, 0xf);
|
|
tcg_gen_andi_tl(s->T1, s->T1, ~0xe);
|
|
tcg_gen_or_tl(s->T0, s->T0, s->T1);
|
|
gen_helper_write_crN(cpu_env, tcg_constant_i32(0), s->T0);
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
break;
|
|
|
|
CASE_MODRM_MEM_OP(7): /* invlpg */
|
|
if (!check_cpl0(s)) {
|
|
break;
|
|
}
|
|
gen_svm_check_intercept(s, SVM_EXIT_INVLPG);
|
|
gen_lea_modrm(env, s, modrm);
|
|
gen_helper_flush_page(cpu_env, s->A0);
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
break;
|
|
|
|
case 0xf8: /* swapgs */
|
|
#ifdef TARGET_X86_64
|
|
if (CODE64(s)) {
|
|
if (check_cpl0(s)) {
|
|
tcg_gen_mov_tl(s->T0, cpu_seg_base[R_GS]);
|
|
tcg_gen_ld_tl(cpu_seg_base[R_GS], cpu_env,
|
|
offsetof(CPUX86State, kernelgsbase));
|
|
tcg_gen_st_tl(s->T0, cpu_env,
|
|
offsetof(CPUX86State, kernelgsbase));
|
|
}
|
|
break;
|
|
}
|
|
#endif
|
|
goto illegal_op;
|
|
|
|
case 0xf9: /* rdtscp */
|
|
if (!(s->cpuid_ext2_features & CPUID_EXT2_RDTSCP)) {
|
|
goto illegal_op;
|
|
}
|
|
gen_update_cc_op(s);
|
|
gen_update_eip_cur(s);
|
|
if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
|
|
gen_io_start();
|
|
s->base.is_jmp = DISAS_TOO_MANY;
|
|
}
|
|
gen_helper_rdtscp(cpu_env);
|
|
break;
|
|
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
break;
|
|
|
|
case 0x108: /* invd */
|
|
case 0x109: /* wbinvd */
|
|
if (check_cpl0(s)) {
|
|
gen_svm_check_intercept(s, (b & 2) ? SVM_EXIT_INVD : SVM_EXIT_WBINVD);
|
|
/* nothing to do */
|
|
}
|
|
break;
|
|
case 0x63: /* arpl or movslS (x86_64) */
|
|
#ifdef TARGET_X86_64
|
|
if (CODE64(s)) {
|
|
int d_ot;
|
|
/* d_ot is the size of destination */
|
|
d_ot = dflag;
|
|
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
mod = (modrm >> 6) & 3;
|
|
rm = (modrm & 7) | REX_B(s);
|
|
|
|
if (mod == 3) {
|
|
gen_op_mov_v_reg(s, MO_32, s->T0, rm);
|
|
/* sign extend */
|
|
if (d_ot == MO_64) {
|
|
tcg_gen_ext32s_tl(s->T0, s->T0);
|
|
}
|
|
gen_op_mov_reg_v(s, d_ot, reg, s->T0);
|
|
} else {
|
|
gen_lea_modrm(env, s, modrm);
|
|
gen_op_ld_v(s, MO_32 | MO_SIGN, s->T0, s->A0);
|
|
gen_op_mov_reg_v(s, d_ot, reg, s->T0);
|
|
}
|
|
} else
|
|
#endif
|
|
{
|
|
TCGLabel *label1;
|
|
TCGv t0, t1, t2, a0;
|
|
|
|
if (!PE(s) || VM86(s))
|
|
goto illegal_op;
|
|
t0 = tcg_temp_local_new();
|
|
t1 = tcg_temp_local_new();
|
|
t2 = tcg_temp_local_new();
|
|
ot = MO_16;
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = (modrm >> 3) & 7;
|
|
mod = (modrm >> 6) & 3;
|
|
rm = modrm & 7;
|
|
if (mod != 3) {
|
|
gen_lea_modrm(env, s, modrm);
|
|
gen_op_ld_v(s, ot, t0, s->A0);
|
|
a0 = tcg_temp_local_new();
|
|
tcg_gen_mov_tl(a0, s->A0);
|
|
} else {
|
|
gen_op_mov_v_reg(s, ot, t0, rm);
|
|
a0 = NULL;
|
|
}
|
|
gen_op_mov_v_reg(s, ot, t1, reg);
|
|
tcg_gen_andi_tl(s->tmp0, t0, 3);
|
|
tcg_gen_andi_tl(t1, t1, 3);
|
|
tcg_gen_movi_tl(t2, 0);
|
|
label1 = gen_new_label();
|
|
tcg_gen_brcond_tl(TCG_COND_GE, s->tmp0, t1, label1);
|
|
tcg_gen_andi_tl(t0, t0, ~3);
|
|
tcg_gen_or_tl(t0, t0, t1);
|
|
tcg_gen_movi_tl(t2, CC_Z);
|
|
gen_set_label(label1);
|
|
if (mod != 3) {
|
|
gen_op_st_v(s, ot, t0, a0);
|
|
tcg_temp_free(a0);
|
|
} else {
|
|
gen_op_mov_reg_v(s, ot, rm, t0);
|
|
}
|
|
gen_compute_eflags(s);
|
|
tcg_gen_andi_tl(cpu_cc_src, cpu_cc_src, ~CC_Z);
|
|
tcg_gen_or_tl(cpu_cc_src, cpu_cc_src, t2);
|
|
tcg_temp_free(t0);
|
|
tcg_temp_free(t1);
|
|
tcg_temp_free(t2);
|
|
}
|
|
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_ldst_modrm(env, s, modrm, MO_16, OR_TMP0, 0);
|
|
t0 = tcg_temp_local_new();
|
|
gen_update_cc_op(s);
|
|
if (b == 0x102) {
|
|
gen_helper_lar(t0, cpu_env, s->T0);
|
|
} else {
|
|
gen_helper_lsl(t0, cpu_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);
|
|
tcg_temp_free(t0);
|
|
}
|
|
break;
|
|
case 0x118:
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
op = (modrm >> 3) & 7;
|
|
switch(op) {
|
|
case 0: /* prefetchnta */
|
|
case 1: /* prefetchnt0 */
|
|
case 2: /* prefetchnt0 */
|
|
case 3: /* prefetchnt0 */
|
|
if (mod == 3)
|
|
goto illegal_op;
|
|
gen_nop_modrm(env, s, modrm);
|
|
/* nothing more to do */
|
|
break;
|
|
default: /* nop (multi byte) */
|
|
gen_nop_modrm(env, s, modrm);
|
|
break;
|
|
}
|
|
break;
|
|
case 0x11a:
|
|
modrm = x86_ldub_code(env, s);
|
|
if (s->flags & HF_MPX_EN_MASK) {
|
|
mod = (modrm >> 6) & 3;
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
if (prefixes & PREFIX_REPZ) {
|
|
/* bndcl */
|
|
if (reg >= 4
|
|
|| (prefixes & PREFIX_LOCK)
|
|
|| s->aflag == MO_16) {
|
|
goto illegal_op;
|
|
}
|
|
gen_bndck(env, s, modrm, TCG_COND_LTU, cpu_bndl[reg]);
|
|
} else if (prefixes & PREFIX_REPNZ) {
|
|
/* bndcu */
|
|
if (reg >= 4
|
|
|| (prefixes & PREFIX_LOCK)
|
|
|| s->aflag == MO_16) {
|
|
goto illegal_op;
|
|
}
|
|
TCGv_i64 notu = tcg_temp_new_i64();
|
|
tcg_gen_not_i64(notu, cpu_bndu[reg]);
|
|
gen_bndck(env, s, modrm, TCG_COND_GTU, notu);
|
|
tcg_temp_free_i64(notu);
|
|
} else if (prefixes & PREFIX_DATA) {
|
|
/* bndmov -- from reg/mem */
|
|
if (reg >= 4 || s->aflag == MO_16) {
|
|
goto illegal_op;
|
|
}
|
|
if (mod == 3) {
|
|
int reg2 = (modrm & 7) | REX_B(s);
|
|
if (reg2 >= 4 || (prefixes & PREFIX_LOCK)) {
|
|
goto illegal_op;
|
|
}
|
|
if (s->flags & HF_MPX_IU_MASK) {
|
|
tcg_gen_mov_i64(cpu_bndl[reg], cpu_bndl[reg2]);
|
|
tcg_gen_mov_i64(cpu_bndu[reg], cpu_bndu[reg2]);
|
|
}
|
|
} else {
|
|
gen_lea_modrm(env, s, modrm);
|
|
if (CODE64(s)) {
|
|
tcg_gen_qemu_ld_i64(cpu_bndl[reg], s->A0,
|
|
s->mem_index, MO_LEUQ);
|
|
tcg_gen_addi_tl(s->A0, s->A0, 8);
|
|
tcg_gen_qemu_ld_i64(cpu_bndu[reg], s->A0,
|
|
s->mem_index, MO_LEUQ);
|
|
} else {
|
|
tcg_gen_qemu_ld_i64(cpu_bndl[reg], s->A0,
|
|
s->mem_index, MO_LEUL);
|
|
tcg_gen_addi_tl(s->A0, s->A0, 4);
|
|
tcg_gen_qemu_ld_i64(cpu_bndu[reg], s->A0,
|
|
s->mem_index, MO_LEUL);
|
|
}
|
|
/* bnd registers are now in-use */
|
|
gen_set_hflag(s, HF_MPX_IU_MASK);
|
|
}
|
|
} else if (mod != 3) {
|
|
/* bndldx */
|
|
AddressParts a = gen_lea_modrm_0(env, s, modrm);
|
|
if (reg >= 4
|
|
|| (prefixes & PREFIX_LOCK)
|
|
|| s->aflag == MO_16
|
|
|| a.base < -1) {
|
|
goto illegal_op;
|
|
}
|
|
if (a.base >= 0) {
|
|
tcg_gen_addi_tl(s->A0, cpu_regs[a.base], a.disp);
|
|
} else {
|
|
tcg_gen_movi_tl(s->A0, 0);
|
|
}
|
|
gen_lea_v_seg(s, s->aflag, s->A0, a.def_seg, s->override);
|
|
if (a.index >= 0) {
|
|
tcg_gen_mov_tl(s->T0, cpu_regs[a.index]);
|
|
} else {
|
|
tcg_gen_movi_tl(s->T0, 0);
|
|
}
|
|
if (CODE64(s)) {
|
|
gen_helper_bndldx64(cpu_bndl[reg], cpu_env, s->A0, s->T0);
|
|
tcg_gen_ld_i64(cpu_bndu[reg], cpu_env,
|
|
offsetof(CPUX86State, mmx_t0.MMX_Q(0)));
|
|
} else {
|
|
gen_helper_bndldx32(cpu_bndu[reg], cpu_env, s->A0, s->T0);
|
|
tcg_gen_ext32u_i64(cpu_bndl[reg], cpu_bndu[reg]);
|
|
tcg_gen_shri_i64(cpu_bndu[reg], cpu_bndu[reg], 32);
|
|
}
|
|
gen_set_hflag(s, HF_MPX_IU_MASK);
|
|
}
|
|
}
|
|
gen_nop_modrm(env, s, modrm);
|
|
break;
|
|
case 0x11b:
|
|
modrm = x86_ldub_code(env, s);
|
|
if (s->flags & HF_MPX_EN_MASK) {
|
|
mod = (modrm >> 6) & 3;
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
if (mod != 3 && (prefixes & PREFIX_REPZ)) {
|
|
/* bndmk */
|
|
if (reg >= 4
|
|
|| (prefixes & PREFIX_LOCK)
|
|
|| s->aflag == MO_16) {
|
|
goto illegal_op;
|
|
}
|
|
AddressParts a = gen_lea_modrm_0(env, s, modrm);
|
|
if (a.base >= 0) {
|
|
tcg_gen_extu_tl_i64(cpu_bndl[reg], cpu_regs[a.base]);
|
|
if (!CODE64(s)) {
|
|
tcg_gen_ext32u_i64(cpu_bndl[reg], cpu_bndl[reg]);
|
|
}
|
|
} else if (a.base == -1) {
|
|
/* no base register has lower bound of 0 */
|
|
tcg_gen_movi_i64(cpu_bndl[reg], 0);
|
|
} else {
|
|
/* rip-relative generates #ud */
|
|
goto illegal_op;
|
|
}
|
|
tcg_gen_not_tl(s->A0, gen_lea_modrm_1(s, a, false));
|
|
if (!CODE64(s)) {
|
|
tcg_gen_ext32u_tl(s->A0, s->A0);
|
|
}
|
|
tcg_gen_extu_tl_i64(cpu_bndu[reg], s->A0);
|
|
/* bnd registers are now in-use */
|
|
gen_set_hflag(s, HF_MPX_IU_MASK);
|
|
break;
|
|
} else if (prefixes & PREFIX_REPNZ) {
|
|
/* bndcn */
|
|
if (reg >= 4
|
|
|| (prefixes & PREFIX_LOCK)
|
|
|| s->aflag == MO_16) {
|
|
goto illegal_op;
|
|
}
|
|
gen_bndck(env, s, modrm, TCG_COND_GTU, cpu_bndu[reg]);
|
|
} else if (prefixes & PREFIX_DATA) {
|
|
/* bndmov -- to reg/mem */
|
|
if (reg >= 4 || s->aflag == MO_16) {
|
|
goto illegal_op;
|
|
}
|
|
if (mod == 3) {
|
|
int reg2 = (modrm & 7) | REX_B(s);
|
|
if (reg2 >= 4 || (prefixes & PREFIX_LOCK)) {
|
|
goto illegal_op;
|
|
}
|
|
if (s->flags & HF_MPX_IU_MASK) {
|
|
tcg_gen_mov_i64(cpu_bndl[reg2], cpu_bndl[reg]);
|
|
tcg_gen_mov_i64(cpu_bndu[reg2], cpu_bndu[reg]);
|
|
}
|
|
} else {
|
|
gen_lea_modrm(env, s, modrm);
|
|
if (CODE64(s)) {
|
|
tcg_gen_qemu_st_i64(cpu_bndl[reg], s->A0,
|
|
s->mem_index, MO_LEUQ);
|
|
tcg_gen_addi_tl(s->A0, s->A0, 8);
|
|
tcg_gen_qemu_st_i64(cpu_bndu[reg], s->A0,
|
|
s->mem_index, MO_LEUQ);
|
|
} else {
|
|
tcg_gen_qemu_st_i64(cpu_bndl[reg], s->A0,
|
|
s->mem_index, MO_LEUL);
|
|
tcg_gen_addi_tl(s->A0, s->A0, 4);
|
|
tcg_gen_qemu_st_i64(cpu_bndu[reg], s->A0,
|
|
s->mem_index, MO_LEUL);
|
|
}
|
|
}
|
|
} else if (mod != 3) {
|
|
/* bndstx */
|
|
AddressParts a = gen_lea_modrm_0(env, s, modrm);
|
|
if (reg >= 4
|
|
|| (prefixes & PREFIX_LOCK)
|
|
|| s->aflag == MO_16
|
|
|| a.base < -1) {
|
|
goto illegal_op;
|
|
}
|
|
if (a.base >= 0) {
|
|
tcg_gen_addi_tl(s->A0, cpu_regs[a.base], a.disp);
|
|
} else {
|
|
tcg_gen_movi_tl(s->A0, 0);
|
|
}
|
|
gen_lea_v_seg(s, s->aflag, s->A0, a.def_seg, s->override);
|
|
if (a.index >= 0) {
|
|
tcg_gen_mov_tl(s->T0, cpu_regs[a.index]);
|
|
} else {
|
|
tcg_gen_movi_tl(s->T0, 0);
|
|
}
|
|
if (CODE64(s)) {
|
|
gen_helper_bndstx64(cpu_env, s->A0, s->T0,
|
|
cpu_bndl[reg], cpu_bndu[reg]);
|
|
} else {
|
|
gen_helper_bndstx32(cpu_env, s->A0, s->T0,
|
|
cpu_bndl[reg], cpu_bndu[reg]);
|
|
}
|
|
}
|
|
}
|
|
gen_nop_modrm(env, s, modrm);
|
|
break;
|
|
case 0x119: case 0x11c ... 0x11f: /* nop (multi byte) */
|
|
modrm = x86_ldub_code(env, s);
|
|
gen_nop_modrm(env, s, modrm);
|
|
break;
|
|
|
|
case 0x120: /* mov reg, crN */
|
|
case 0x122: /* mov crN, reg */
|
|
if (!check_cpl0(s)) {
|
|
break;
|
|
}
|
|
modrm = x86_ldub_code(env, s);
|
|
/*
|
|
* Ignore the mod bits (assume (modrm&0xc0)==0xc0).
|
|
* AMD documentation (24594.pdf) and testing of Intel 386 and 486
|
|
* processors all show that the mod bits are assumed to be 1's,
|
|
* regardless of actual values.
|
|
*/
|
|
rm = (modrm & 7) | REX_B(s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
switch (reg) {
|
|
case 0:
|
|
if ((prefixes & PREFIX_LOCK) &&
|
|
(s->cpuid_ext3_features & CPUID_EXT3_CR8LEG)) {
|
|
reg = 8;
|
|
}
|
|
break;
|
|
case 2:
|
|
case 3:
|
|
case 4:
|
|
case 8:
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
ot = (CODE64(s) ? MO_64 : MO_32);
|
|
|
|
if (tb_cflags(s->base.tb) & CF_USE_ICOUNT) {
|
|
gen_io_start();
|
|
s->base.is_jmp = DISAS_TOO_MANY;
|
|
}
|
|
if (b & 2) {
|
|
gen_svm_check_intercept(s, SVM_EXIT_WRITE_CR0 + reg);
|
|
gen_op_mov_v_reg(s, ot, s->T0, rm);
|
|
gen_helper_write_crN(cpu_env, tcg_constant_i32(reg), s->T0);
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
} else {
|
|
gen_svm_check_intercept(s, SVM_EXIT_READ_CR0 + reg);
|
|
gen_helper_read_crN(s->T0, cpu_env, tcg_constant_i32(reg));
|
|
gen_op_mov_reg_v(s, ot, rm, s->T0);
|
|
}
|
|
break;
|
|
|
|
case 0x121: /* mov reg, drN */
|
|
case 0x123: /* mov drN, reg */
|
|
if (check_cpl0(s)) {
|
|
modrm = x86_ldub_code(env, s);
|
|
/* Ignore the mod bits (assume (modrm&0xc0)==0xc0).
|
|
* AMD documentation (24594.pdf) and testing of
|
|
* intel 386 and 486 processors all show that the mod bits
|
|
* are assumed to be 1's, regardless of actual values.
|
|
*/
|
|
rm = (modrm & 7) | REX_B(s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
if (CODE64(s))
|
|
ot = MO_64;
|
|
else
|
|
ot = MO_32;
|
|
if (reg >= 8) {
|
|
goto illegal_op;
|
|
}
|
|
if (b & 2) {
|
|
gen_svm_check_intercept(s, SVM_EXIT_WRITE_DR0 + reg);
|
|
gen_op_mov_v_reg(s, ot, s->T0, rm);
|
|
tcg_gen_movi_i32(s->tmp2_i32, reg);
|
|
gen_helper_set_dr(cpu_env, s->tmp2_i32, s->T0);
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
} else {
|
|
gen_svm_check_intercept(s, SVM_EXIT_READ_DR0 + reg);
|
|
tcg_gen_movi_i32(s->tmp2_i32, reg);
|
|
gen_helper_get_dr(s->T0, cpu_env, s->tmp2_i32);
|
|
gen_op_mov_reg_v(s, ot, rm, s->T0);
|
|
}
|
|
}
|
|
break;
|
|
case 0x106: /* clts */
|
|
if (check_cpl0(s)) {
|
|
gen_svm_check_intercept(s, SVM_EXIT_WRITE_CR0);
|
|
gen_helper_clts(cpu_env);
|
|
/* abort block because static cpu state changed */
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
}
|
|
break;
|
|
/* MMX/3DNow!/SSE/SSE2/SSE3/SSSE3/SSE4 support */
|
|
case 0x1c3: /* MOVNTI reg, mem */
|
|
if (!(s->cpuid_features & CPUID_SSE2))
|
|
goto illegal_op;
|
|
ot = mo_64_32(dflag);
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
if (mod == 3)
|
|
goto illegal_op;
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
/* generate a generic store */
|
|
gen_ldst_modrm(env, s, modrm, ot, reg, 1);
|
|
break;
|
|
case 0x1ae:
|
|
modrm = x86_ldub_code(env, s);
|
|
switch (modrm) {
|
|
CASE_MODRM_MEM_OP(0): /* fxsave */
|
|
if (!(s->cpuid_features & CPUID_FXSR)
|
|
|| (prefixes & PREFIX_LOCK)) {
|
|
goto illegal_op;
|
|
}
|
|
if ((s->flags & HF_EM_MASK) || (s->flags & HF_TS_MASK)) {
|
|
gen_exception(s, EXCP07_PREX);
|
|
break;
|
|
}
|
|
gen_lea_modrm(env, s, modrm);
|
|
gen_helper_fxsave(cpu_env, s->A0);
|
|
break;
|
|
|
|
CASE_MODRM_MEM_OP(1): /* fxrstor */
|
|
if (!(s->cpuid_features & CPUID_FXSR)
|
|
|| (prefixes & PREFIX_LOCK)) {
|
|
goto illegal_op;
|
|
}
|
|
if ((s->flags & HF_EM_MASK) || (s->flags & HF_TS_MASK)) {
|
|
gen_exception(s, EXCP07_PREX);
|
|
break;
|
|
}
|
|
gen_lea_modrm(env, s, modrm);
|
|
gen_helper_fxrstor(cpu_env, s->A0);
|
|
break;
|
|
|
|
CASE_MODRM_MEM_OP(2): /* ldmxcsr */
|
|
if ((s->flags & HF_EM_MASK) || !(s->flags & HF_OSFXSR_MASK)) {
|
|
goto illegal_op;
|
|
}
|
|
if (s->flags & HF_TS_MASK) {
|
|
gen_exception(s, EXCP07_PREX);
|
|
break;
|
|
}
|
|
gen_lea_modrm(env, s, modrm);
|
|
tcg_gen_qemu_ld_i32(s->tmp2_i32, s->A0, s->mem_index, MO_LEUL);
|
|
gen_helper_ldmxcsr(cpu_env, s->tmp2_i32);
|
|
break;
|
|
|
|
CASE_MODRM_MEM_OP(3): /* stmxcsr */
|
|
if ((s->flags & HF_EM_MASK) || !(s->flags & HF_OSFXSR_MASK)) {
|
|
goto illegal_op;
|
|
}
|
|
if (s->flags & HF_TS_MASK) {
|
|
gen_exception(s, EXCP07_PREX);
|
|
break;
|
|
}
|
|
gen_helper_update_mxcsr(cpu_env);
|
|
gen_lea_modrm(env, s, modrm);
|
|
tcg_gen_ld32u_tl(s->T0, cpu_env, offsetof(CPUX86State, mxcsr));
|
|
gen_op_st_v(s, MO_32, s->T0, s->A0);
|
|
break;
|
|
|
|
CASE_MODRM_MEM_OP(4): /* xsave */
|
|
if ((s->cpuid_ext_features & CPUID_EXT_XSAVE) == 0
|
|
|| (prefixes & (PREFIX_LOCK | PREFIX_DATA
|
|
| PREFIX_REPZ | PREFIX_REPNZ))) {
|
|
goto illegal_op;
|
|
}
|
|
gen_lea_modrm(env, s, modrm);
|
|
tcg_gen_concat_tl_i64(s->tmp1_i64, cpu_regs[R_EAX],
|
|
cpu_regs[R_EDX]);
|
|
gen_helper_xsave(cpu_env, s->A0, s->tmp1_i64);
|
|
break;
|
|
|
|
CASE_MODRM_MEM_OP(5): /* xrstor */
|
|
if ((s->cpuid_ext_features & CPUID_EXT_XSAVE) == 0
|
|
|| (prefixes & (PREFIX_LOCK | PREFIX_DATA
|
|
| PREFIX_REPZ | PREFIX_REPNZ))) {
|
|
goto illegal_op;
|
|
}
|
|
gen_lea_modrm(env, s, modrm);
|
|
tcg_gen_concat_tl_i64(s->tmp1_i64, cpu_regs[R_EAX],
|
|
cpu_regs[R_EDX]);
|
|
gen_helper_xrstor(cpu_env, s->A0, s->tmp1_i64);
|
|
/* XRSTOR is how MPX is enabled, which changes how
|
|
we translate. Thus we need to end the TB. */
|
|
s->base.is_jmp = DISAS_EOB_NEXT;
|
|
break;
|
|
|
|
CASE_MODRM_MEM_OP(6): /* xsaveopt / clwb */
|
|
if (prefixes & PREFIX_LOCK) {
|
|
goto illegal_op;
|
|
}
|
|
if (prefixes & PREFIX_DATA) {
|
|
/* clwb */
|
|
if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_CLWB)) {
|
|
goto illegal_op;
|
|
}
|
|
gen_nop_modrm(env, s, modrm);
|
|
} else {
|
|
/* xsaveopt */
|
|
if ((s->cpuid_ext_features & CPUID_EXT_XSAVE) == 0
|
|
|| (s->cpuid_xsave_features & CPUID_XSAVE_XSAVEOPT) == 0
|
|
|| (prefixes & (PREFIX_REPZ | PREFIX_REPNZ))) {
|
|
goto illegal_op;
|
|
}
|
|
gen_lea_modrm(env, s, modrm);
|
|
tcg_gen_concat_tl_i64(s->tmp1_i64, cpu_regs[R_EAX],
|
|
cpu_regs[R_EDX]);
|
|
gen_helper_xsaveopt(cpu_env, s->A0, s->tmp1_i64);
|
|
}
|
|
break;
|
|
|
|
CASE_MODRM_MEM_OP(7): /* clflush / clflushopt */
|
|
if (prefixes & PREFIX_LOCK) {
|
|
goto illegal_op;
|
|
}
|
|
if (prefixes & PREFIX_DATA) {
|
|
/* clflushopt */
|
|
if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_CLFLUSHOPT)) {
|
|
goto illegal_op;
|
|
}
|
|
} else {
|
|
/* clflush */
|
|
if ((s->prefix & (PREFIX_REPZ | PREFIX_REPNZ))
|
|
|| !(s->cpuid_features & CPUID_CLFLUSH)) {
|
|
goto illegal_op;
|
|
}
|
|
}
|
|
gen_nop_modrm(env, s, modrm);
|
|
break;
|
|
|
|
case 0xc0 ... 0xc7: /* rdfsbase (f3 0f ae /0) */
|
|
case 0xc8 ... 0xcf: /* rdgsbase (f3 0f ae /1) */
|
|
case 0xd0 ... 0xd7: /* wrfsbase (f3 0f ae /2) */
|
|
case 0xd8 ... 0xdf: /* wrgsbase (f3 0f ae /3) */
|
|
if (CODE64(s)
|
|
&& (prefixes & PREFIX_REPZ)
|
|
&& !(prefixes & PREFIX_LOCK)
|
|
&& (s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_FSGSBASE)) {
|
|
TCGv base, treg, src, dst;
|
|
|
|
/* Preserve hflags bits by testing CR4 at runtime. */
|
|
tcg_gen_movi_i32(s->tmp2_i32, CR4_FSGSBASE_MASK);
|
|
gen_helper_cr4_testbit(cpu_env, s->tmp2_i32);
|
|
|
|
base = cpu_seg_base[modrm & 8 ? R_GS : R_FS];
|
|
treg = cpu_regs[(modrm & 7) | REX_B(s)];
|
|
|
|
if (modrm & 0x10) {
|
|
/* wr*base */
|
|
dst = base, src = treg;
|
|
} else {
|
|
/* rd*base */
|
|
dst = treg, src = base;
|
|
}
|
|
|
|
if (s->dflag == MO_32) {
|
|
tcg_gen_ext32u_tl(dst, src);
|
|
} else {
|
|
tcg_gen_mov_tl(dst, src);
|
|
}
|
|
break;
|
|
}
|
|
goto unknown_op;
|
|
|
|
case 0xf8: /* sfence / pcommit */
|
|
if (prefixes & PREFIX_DATA) {
|
|
/* pcommit */
|
|
if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_PCOMMIT)
|
|
|| (prefixes & PREFIX_LOCK)) {
|
|
goto illegal_op;
|
|
}
|
|
break;
|
|
}
|
|
/* fallthru */
|
|
case 0xf9 ... 0xff: /* sfence */
|
|
if (!(s->cpuid_features & CPUID_SSE)
|
|
|| (prefixes & PREFIX_LOCK)) {
|
|
goto illegal_op;
|
|
}
|
|
tcg_gen_mb(TCG_MO_ST_ST | TCG_BAR_SC);
|
|
break;
|
|
case 0xe8 ... 0xef: /* lfence */
|
|
if (!(s->cpuid_features & CPUID_SSE)
|
|
|| (prefixes & PREFIX_LOCK)) {
|
|
goto illegal_op;
|
|
}
|
|
tcg_gen_mb(TCG_MO_LD_LD | TCG_BAR_SC);
|
|
break;
|
|
case 0xf0 ... 0xf7: /* mfence */
|
|
if (!(s->cpuid_features & CPUID_SSE2)
|
|
|| (prefixes & PREFIX_LOCK)) {
|
|
goto illegal_op;
|
|
}
|
|
tcg_gen_mb(TCG_MO_ALL | TCG_BAR_SC);
|
|
break;
|
|
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
break;
|
|
|
|
case 0x10d: /* 3DNow! prefetch(w) */
|
|
modrm = x86_ldub_code(env, s);
|
|
mod = (modrm >> 6) & 3;
|
|
if (mod == 3)
|
|
goto illegal_op;
|
|
gen_nop_modrm(env, s, modrm);
|
|
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_update_cc_op(s);
|
|
gen_update_eip_next(s);
|
|
gen_helper_rsm(cpu_env);
|
|
#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)
|
|
goto illegal_op;
|
|
if (!(s->cpuid_ext_features & CPUID_EXT_POPCNT))
|
|
goto illegal_op;
|
|
|
|
modrm = x86_ldub_code(env, s);
|
|
reg = ((modrm >> 3) & 7) | REX_R(s);
|
|
|
|
if (s->prefix & PREFIX_DATA) {
|
|
ot = MO_16;
|
|
} else {
|
|
ot = mo_64_32(dflag);
|
|
}
|
|
|
|
gen_ldst_modrm(env, s, modrm, ot, OR_TMP0, 0);
|
|
gen_extu(ot, s->T0);
|
|
tcg_gen_mov_tl(cpu_cc_src, s->T0);
|
|
tcg_gen_ctpop_tl(s->T0, s->T0);
|
|
gen_op_mov_reg_v(s, ot, reg, s->T0);
|
|
|
|
set_cc_op(s, CC_OP_POPCNT);
|
|
break;
|
|
case 0x10e ... 0x117:
|
|
case 0x128 ... 0x12f:
|
|
case 0x138 ... 0x13a:
|
|
case 0x150 ... 0x179:
|
|
case 0x17c ... 0x17f:
|
|
case 0x1c2:
|
|
case 0x1c4 ... 0x1c6:
|
|
case 0x1d0 ... 0x1fe:
|
|
disas_insn_new(s, cpu, b);
|
|
break;
|
|
default:
|
|
goto unknown_op;
|
|
}
|
|
return true;
|
|
illegal_op:
|
|
gen_illegal_opcode(s);
|
|
return true;
|
|
unknown_op:
|
|
gen_unknown_opcode(env, s);
|
|
return true;
|
|
}
|
|
|
|
void tcg_x86_init(void)
|
|
{
|
|
static const char reg_names[CPU_NB_REGS][4] = {
|
|
#ifdef TARGET_X86_64
|
|
[R_EAX] = "rax",
|
|
[R_EBX] = "rbx",
|
|
[R_ECX] = "rcx",
|
|
[R_EDX] = "rdx",
|
|
[R_ESI] = "rsi",
|
|
[R_EDI] = "rdi",
|
|
[R_EBP] = "rbp",
|
|
[R_ESP] = "rsp",
|
|
[8] = "r8",
|
|
[9] = "r9",
|
|
[10] = "r10",
|
|
[11] = "r11",
|
|
[12] = "r12",
|
|
[13] = "r13",
|
|
[14] = "r14",
|
|
[15] = "r15",
|
|
#else
|
|
[R_EAX] = "eax",
|
|
[R_EBX] = "ebx",
|
|
[R_ECX] = "ecx",
|
|
[R_EDX] = "edx",
|
|
[R_ESI] = "esi",
|
|
[R_EDI] = "edi",
|
|
[R_EBP] = "ebp",
|
|
[R_ESP] = "esp",
|
|
#endif
|
|
};
|
|
static const char eip_name[] = {
|
|
#ifdef TARGET_X86_64
|
|
"rip"
|
|
#else
|
|
"eip"
|
|
#endif
|
|
};
|
|
static const char seg_base_names[6][8] = {
|
|
[R_CS] = "cs_base",
|
|
[R_DS] = "ds_base",
|
|
[R_ES] = "es_base",
|
|
[R_FS] = "fs_base",
|
|
[R_GS] = "gs_base",
|
|
[R_SS] = "ss_base",
|
|
};
|
|
static const char bnd_regl_names[4][8] = {
|
|
"bnd0_lb", "bnd1_lb", "bnd2_lb", "bnd3_lb"
|
|
};
|
|
static const char bnd_regu_names[4][8] = {
|
|
"bnd0_ub", "bnd1_ub", "bnd2_ub", "bnd3_ub"
|
|
};
|
|
int i;
|
|
|
|
cpu_cc_op = tcg_global_mem_new_i32(cpu_env,
|
|
offsetof(CPUX86State, cc_op), "cc_op");
|
|
cpu_cc_dst = tcg_global_mem_new(cpu_env, offsetof(CPUX86State, cc_dst),
|
|
"cc_dst");
|
|
cpu_cc_src = tcg_global_mem_new(cpu_env, offsetof(CPUX86State, cc_src),
|
|
"cc_src");
|
|
cpu_cc_src2 = tcg_global_mem_new(cpu_env, offsetof(CPUX86State, cc_src2),
|
|
"cc_src2");
|
|
cpu_eip = tcg_global_mem_new(cpu_env, offsetof(CPUX86State, eip), eip_name);
|
|
|
|
for (i = 0; i < CPU_NB_REGS; ++i) {
|
|
cpu_regs[i] = tcg_global_mem_new(cpu_env,
|
|
offsetof(CPUX86State, regs[i]),
|
|
reg_names[i]);
|
|
}
|
|
|
|
for (i = 0; i < 6; ++i) {
|
|
cpu_seg_base[i]
|
|
= tcg_global_mem_new(cpu_env,
|
|
offsetof(CPUX86State, segs[i].base),
|
|
seg_base_names[i]);
|
|
}
|
|
|
|
for (i = 0; i < 4; ++i) {
|
|
cpu_bndl[i]
|
|
= tcg_global_mem_new_i64(cpu_env,
|
|
offsetof(CPUX86State, bnd_regs[i].lb),
|
|
bnd_regl_names[i]);
|
|
cpu_bndu[i]
|
|
= tcg_global_mem_new_i64(cpu_env,
|
|
offsetof(CPUX86State, bnd_regs[i].ub),
|
|
bnd_regu_names[i]);
|
|
}
|
|
}
|
|
|
|
static void i386_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cpu)
|
|
{
|
|
DisasContext *dc = container_of(dcbase, DisasContext, base);
|
|
CPUX86State *env = cpu->env_ptr;
|
|
uint32_t flags = dc->base.tb->flags;
|
|
uint32_t cflags = tb_cflags(dc->base.tb);
|
|
int cpl = (flags >> HF_CPL_SHIFT) & 3;
|
|
int iopl = (flags >> IOPL_SHIFT) & 3;
|
|
|
|
dc->cs_base = dc->base.tb->cs_base;
|
|
dc->pc_save = dc->base.pc_next;
|
|
dc->flags = flags;
|
|
#ifndef CONFIG_USER_ONLY
|
|
dc->cpl = cpl;
|
|
dc->iopl = iopl;
|
|
#endif
|
|
|
|
/* We make some simplifying assumptions; validate they're correct. */
|
|
g_assert(PE(dc) == ((flags & HF_PE_MASK) != 0));
|
|
g_assert(CPL(dc) == cpl);
|
|
g_assert(IOPL(dc) == iopl);
|
|
g_assert(VM86(dc) == ((flags & HF_VM_MASK) != 0));
|
|
g_assert(CODE32(dc) == ((flags & HF_CS32_MASK) != 0));
|
|
g_assert(CODE64(dc) == ((flags & HF_CS64_MASK) != 0));
|
|
g_assert(SS32(dc) == ((flags & HF_SS32_MASK) != 0));
|
|
g_assert(LMA(dc) == ((flags & HF_LMA_MASK) != 0));
|
|
g_assert(ADDSEG(dc) == ((flags & HF_ADDSEG_MASK) != 0));
|
|
g_assert(SVME(dc) == ((flags & HF_SVME_MASK) != 0));
|
|
g_assert(GUEST(dc) == ((flags & HF_GUEST_MASK) != 0));
|
|
|
|
dc->cc_op = CC_OP_DYNAMIC;
|
|
dc->cc_op_dirty = false;
|
|
dc->popl_esp_hack = 0;
|
|
/* select memory access functions */
|
|
dc->mem_index = 0;
|
|
#ifdef CONFIG_SOFTMMU
|
|
dc->mem_index = cpu_mmu_index(env, false);
|
|
#endif
|
|
dc->cpuid_features = env->features[FEAT_1_EDX];
|
|
dc->cpuid_ext_features = env->features[FEAT_1_ECX];
|
|
dc->cpuid_ext2_features = env->features[FEAT_8000_0001_EDX];
|
|
dc->cpuid_ext3_features = env->features[FEAT_8000_0001_ECX];
|
|
dc->cpuid_7_0_ebx_features = env->features[FEAT_7_0_EBX];
|
|
dc->cpuid_7_0_ecx_features = env->features[FEAT_7_0_ECX];
|
|
dc->cpuid_xsave_features = env->features[FEAT_XSAVE];
|
|
dc->jmp_opt = !((cflags & CF_NO_GOTO_TB) ||
|
|
(flags & (HF_TF_MASK | HF_INHIBIT_IRQ_MASK)));
|
|
/*
|
|
* If jmp_opt, we want to handle each string instruction individually.
|
|
* For icount also disable repz optimization so that each iteration
|
|
* is accounted separately.
|
|
*/
|
|
dc->repz_opt = !dc->jmp_opt && !(cflags & CF_USE_ICOUNT);
|
|
|
|
dc->T0 = tcg_temp_new();
|
|
dc->T1 = tcg_temp_new();
|
|
dc->A0 = tcg_temp_new();
|
|
|
|
dc->tmp0 = tcg_temp_new();
|
|
dc->tmp1_i64 = tcg_temp_new_i64();
|
|
dc->tmp2_i32 = tcg_temp_new_i32();
|
|
dc->tmp3_i32 = tcg_temp_new_i32();
|
|
dc->tmp4 = tcg_temp_new();
|
|
dc->cc_srcT = tcg_temp_local_new();
|
|
}
|
|
|
|
static void i386_tr_tb_start(DisasContextBase *db, CPUState *cpu)
|
|
{
|
|
}
|
|
|
|
static void i386_tr_insn_start(DisasContextBase *dcbase, CPUState *cpu)
|
|
{
|
|
DisasContext *dc = container_of(dcbase, DisasContext, base);
|
|
target_ulong pc_arg = dc->base.pc_next;
|
|
|
|
dc->prev_insn_end = tcg_last_op();
|
|
if (TARGET_TB_PCREL) {
|
|
pc_arg -= dc->cs_base;
|
|
pc_arg &= ~TARGET_PAGE_MASK;
|
|
}
|
|
tcg_gen_insn_start(pc_arg, dc->cc_op);
|
|
}
|
|
|
|
static void i386_tr_translate_insn(DisasContextBase *dcbase, CPUState *cpu)
|
|
{
|
|
DisasContext *dc = container_of(dcbase, DisasContext, base);
|
|
|
|
#ifdef TARGET_VSYSCALL_PAGE
|
|
/*
|
|
* Detect entry into the vsyscall page and invoke the syscall.
|
|
*/
|
|
if ((dc->base.pc_next & TARGET_PAGE_MASK) == TARGET_VSYSCALL_PAGE) {
|
|
gen_exception(dc, EXCP_VSYSCALL);
|
|
dc->base.pc_next = dc->pc + 1;
|
|
return;
|
|
}
|
|
#endif
|
|
|
|
if (disas_insn(dc, cpu)) {
|
|
target_ulong pc_next = dc->pc;
|
|
dc->base.pc_next = pc_next;
|
|
|
|
if (dc->base.is_jmp == DISAS_NEXT) {
|
|
if (dc->flags & (HF_TF_MASK | HF_INHIBIT_IRQ_MASK)) {
|
|
/*
|
|
* If single step mode, we generate only one instruction and
|
|
* generate an exception.
|
|
* If irq were inhibited with HF_INHIBIT_IRQ_MASK, we clear
|
|
* the flag and abort the translation to give the irqs a
|
|
* chance to happen.
|
|
*/
|
|
dc->base.is_jmp = DISAS_EOB_NEXT;
|
|
} else if (!is_same_page(&dc->base, pc_next)) {
|
|
dc->base.is_jmp = DISAS_TOO_MANY;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
static void i386_tr_tb_stop(DisasContextBase *dcbase, CPUState *cpu)
|
|
{
|
|
DisasContext *dc = container_of(dcbase, DisasContext, base);
|
|
|
|
switch (dc->base.is_jmp) {
|
|
case DISAS_NORETURN:
|
|
break;
|
|
case DISAS_TOO_MANY:
|
|
gen_update_cc_op(dc);
|
|
gen_jmp_rel_csize(dc, 0, 0);
|
|
break;
|
|
case DISAS_EOB_NEXT:
|
|
gen_update_cc_op(dc);
|
|
gen_update_eip_cur(dc);
|
|
/* fall through */
|
|
case DISAS_EOB_ONLY:
|
|
gen_eob(dc);
|
|
break;
|
|
case DISAS_EOB_INHIBIT_IRQ:
|
|
gen_update_cc_op(dc);
|
|
gen_update_eip_cur(dc);
|
|
gen_eob_inhibit_irq(dc, true);
|
|
break;
|
|
case DISAS_JUMP:
|
|
gen_jr(dc);
|
|
break;
|
|
default:
|
|
g_assert_not_reached();
|
|
}
|
|
}
|
|
|
|
static void i386_tr_disas_log(const DisasContextBase *dcbase,
|
|
CPUState *cpu, FILE *logfile)
|
|
{
|
|
DisasContext *dc = container_of(dcbase, DisasContext, base);
|
|
|
|
fprintf(logfile, "IN: %s\n", lookup_symbol(dc->base.pc_first));
|
|
target_disas(logfile, cpu, dc->base.pc_first, dc->base.tb->size);
|
|
}
|
|
|
|
static const TranslatorOps i386_tr_ops = {
|
|
.init_disas_context = i386_tr_init_disas_context,
|
|
.tb_start = i386_tr_tb_start,
|
|
.insn_start = i386_tr_insn_start,
|
|
.translate_insn = i386_tr_translate_insn,
|
|
.tb_stop = i386_tr_tb_stop,
|
|
.disas_log = i386_tr_disas_log,
|
|
};
|
|
|
|
/* generate intermediate code for basic block 'tb'. */
|
|
void gen_intermediate_code(CPUState *cpu, TranslationBlock *tb, int max_insns,
|
|
target_ulong pc, void *host_pc)
|
|
{
|
|
DisasContext dc;
|
|
|
|
translator_loop(cpu, tb, max_insns, pc, host_pc, &i386_tr_ops, &dc.base);
|
|
}
|