diff options
Diffstat (limited to 'target-i386/translate.c')
| -rw-r--r-- | target-i386/translate.c | 124 |
1 files changed, 72 insertions, 52 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c index 408b36ac36..647757843f 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -7527,13 +7527,12 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, break; case 0x1ae: modrm = cpu_ldub_code(env, s->pc++); - mod = (modrm >> 6) & 3; - op = (modrm >> 3) & 7; - switch(op) { - case 0: /* fxsave */ - if (mod == 3 || !(s->cpuid_features & CPUID_FXSR) || - (s->prefix & PREFIX_LOCK)) + switch (modrm) { + CASE_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, pc_start - s->cs_base); break; @@ -7541,10 +7540,12 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, gen_lea_modrm(env, s, modrm); gen_helper_fxsave(cpu_env, cpu_A0); break; - case 1: /* fxrstor */ - if (mod == 3 || !(s->cpuid_features & CPUID_FXSR) || - (s->prefix & PREFIX_LOCK)) + + CASE_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, pc_start - s->cs_base); break; @@ -7552,71 +7553,90 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, gen_lea_modrm(env, s, modrm); gen_helper_fxrstor(cpu_env, cpu_A0); break; - case 2: /* ldmxcsr */ - case 3: /* stmxcsr */ + + CASE_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, pc_start - s->cs_base); break; } - if ((s->flags & HF_EM_MASK) || !(s->flags & HF_OSFXSR_MASK) || - mod == 3) - goto illegal_op; gen_lea_modrm(env, s, modrm); - if (op == 2) { - tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0, - s->mem_index, MO_LEUL); - gen_helper_ldmxcsr(cpu_env, cpu_tmp2_i32); - } else { - tcg_gen_ld32u_tl(cpu_T0, - cpu_env, offsetof(CPUX86State, mxcsr)); - gen_op_st_v(s, MO_32, cpu_T0, cpu_A0); - } + tcg_gen_qemu_ld_i32(cpu_tmp2_i32, cpu_A0, s->mem_index, MO_LEUL); + gen_helper_ldmxcsr(cpu_env, cpu_tmp2_i32); break; - case 5: /* lfence */ - if ((modrm & 0xc7) != 0xc0 || !(s->cpuid_features & CPUID_SSE2)) + + CASE_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, pc_start - s->cs_base); + break; + } + gen_lea_modrm(env, s, modrm); + tcg_gen_ld32u_tl(cpu_T0, cpu_env, offsetof(CPUX86State, mxcsr)); + gen_op_st_v(s, MO_32, cpu_T0, cpu_A0); break; - case 6: /* mfence/clwb */ - if (s->prefix & PREFIX_DATA) { + + CASE_MEM_OP(6): /* 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)) + if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_CLWB)) { goto illegal_op; + } gen_nop_modrm(env, s, modrm); + break; + } + goto illegal_op; + + CASE_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 { - /* mfence */ - if ((modrm & 0xc7) != 0xc0 || !(s->cpuid_features & CPUID_SSE2)) + /* clflush */ + if ((s->prefix & (PREFIX_REPZ | PREFIX_REPNZ)) + || !(s->cpuid_features & CPUID_CLFLUSH)) { goto illegal_op; + } } + gen_nop_modrm(env, s, modrm); break; - case 7: /* sfence / clflush / clflushopt / pcommit */ - if ((modrm & 0xc7) == 0xc0) { - if (s->prefix & PREFIX_DATA) { - /* pcommit */ - if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_PCOMMIT)) - goto illegal_op; - } else { - /* sfence */ - /* XXX: also check for cpuid_ext2_features & CPUID_EXT2_EMMX */ - if (!(s->cpuid_features & CPUID_SSE)) - goto illegal_op; - } - } else { - if (s->prefix & PREFIX_DATA) { - /* clflushopt */ - if (!(s->cpuid_7_0_ebx_features & CPUID_7_0_EBX_CLFLUSHOPT)) - goto illegal_op; - } else { - /* clflush */ - if (!(s->cpuid_features & CPUID_CLFLUSH)) - goto illegal_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; } - gen_lea_modrm(env, s, modrm); + break; + } + /* fallthru */ + case 0xf9 ... 0xff: /* sfence */ + case 0xe8 ... 0xef: /* lfence */ + case 0xf0 ... 0xf7: /* mfence */ + if (!(s->cpuid_features & CPUID_SSE2) + || (prefixes & PREFIX_LOCK)) { + goto illegal_op; } break; + default: goto illegal_op; } break; + case 0x10d: /* 3DNow! prefetch(w) */ modrm = cpu_ldub_code(env, s->pc++); mod = (modrm >> 6) & 3; |