diff options
author | Richard Henderson <rth@twiddle.net> | 2013-11-06 08:27:33 +1000 |
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committer | Richard Henderson <rth@twiddle.net> | 2014-01-07 11:38:15 -0800 |
commit | 1d71ddb1c28f58e1065386725634ed36ae1d665f (patch) | |
tree | f8ad032437df59053d6f30db7fb126cc23d7b5a4 /target-i386 | |
parent | c92aa1addeae7e3fe6876dd3dff7978f1d3449d2 (diff) | |
download | qemu-1d71ddb1c28f58e1065386725634ed36ae1d665f.zip qemu-1d71ddb1c28f58e1065386725634ed36ae1d665f.tar.gz qemu-1d71ddb1c28f58e1065386725634ed36ae1d665f.tar.bz2 |
target-i386: Change aflag to TCGMemOp
Changing the domain to TCGMemOp makes it easier to interoperate
with other portions of the rest of the translator.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-i386')
-rw-r--r-- | target-i386/translate.c | 178 |
1 files changed, 87 insertions, 91 deletions
diff --git a/target-i386/translate.c b/target-i386/translate.c index f1b4932..8861973 100644 --- a/target-i386/translate.c +++ b/target-i386/translate.c @@ -85,7 +85,8 @@ typedef struct DisasContext { /* current insn context */ int override; /* -1 if no override */ int prefix; - int aflag, dflag; + TCGMemOp aflag; + int dflag; target_ulong pc; /* pc = eip + cs_base */ int is_jmp; /* 1 = means jump (stop translation), 2 means CPU static state change (stop translation) */ @@ -509,17 +510,18 @@ static inline void gen_string_movl_A0_ESI(DisasContext *s) int override; override = s->override; + switch (s->aflag) { #ifdef TARGET_X86_64 - if (s->aflag == 2) { + case MO_64: if (override >= 0) { gen_op_movq_A0_seg(override); gen_op_addq_A0_reg_sN(0, R_ESI); } else { gen_op_movq_A0_reg(R_ESI); } - } else + break; #endif - if (s->aflag) { + case MO_32: /* 32 bit address */ if (s->addseg && override < 0) override = R_DS; @@ -529,32 +531,41 @@ static inline void gen_string_movl_A0_ESI(DisasContext *s) } else { gen_op_movl_A0_reg(R_ESI); } - } else { + break; + case MO_16: /* 16 address, always override */ if (override < 0) override = R_DS; tcg_gen_ext16u_tl(cpu_A0, cpu_regs[R_ESI]); gen_op_addl_A0_seg(s, override); + break; + default: + tcg_abort(); } } static inline void gen_string_movl_A0_EDI(DisasContext *s) { + switch (s->aflag) { #ifdef TARGET_X86_64 - if (s->aflag == 2) { + case MO_64: gen_op_movq_A0_reg(R_EDI); - } else + break; #endif - if (s->aflag) { + case MO_32: if (s->addseg) { gen_op_movl_A0_seg(R_ES); gen_op_addl_A0_reg_sN(0, R_EDI); } else { gen_op_movl_A0_reg(R_EDI); } - } else { + break; + case MO_16: tcg_gen_ext16u_tl(cpu_A0, cpu_regs[R_EDI]); gen_op_addl_A0_seg(s, R_ES); + break; + default: + tcg_abort(); } } @@ -700,8 +711,8 @@ static inline void gen_movs(DisasContext *s, TCGMemOp ot) gen_string_movl_A0_EDI(s); gen_op_st_v(s, ot, cpu_T[0], cpu_A0); gen_op_movl_T0_Dshift(ot); - gen_op_add_reg_T0(s->aflag + 1, R_ESI); - gen_op_add_reg_T0(s->aflag + 1, R_EDI); + gen_op_add_reg_T0(s->aflag, R_ESI); + gen_op_add_reg_T0(s->aflag, R_EDI); } static void gen_op_update1_cc(void) @@ -1113,7 +1124,7 @@ static int gen_jz_ecx_string(DisasContext *s, target_ulong next_eip) l1 = gen_new_label(); l2 = gen_new_label(); - gen_op_jnz_ecx(s->aflag + 1, l1); + gen_op_jnz_ecx(s->aflag, l1); gen_set_label(l2); gen_jmp_tb(s, next_eip, 1); gen_set_label(l1); @@ -1126,7 +1137,7 @@ static inline void gen_stos(DisasContext *s, TCGMemOp ot) gen_string_movl_A0_EDI(s); gen_op_st_v(s, ot, cpu_T[0], cpu_A0); gen_op_movl_T0_Dshift(ot); - gen_op_add_reg_T0(s->aflag + 1, R_EDI); + gen_op_add_reg_T0(s->aflag, R_EDI); } static inline void gen_lods(DisasContext *s, TCGMemOp ot) @@ -1135,7 +1146,7 @@ static inline void gen_lods(DisasContext *s, TCGMemOp ot) gen_op_ld_v(s, ot, cpu_T[0], cpu_A0); gen_op_mov_reg_T0(ot, R_EAX); gen_op_movl_T0_Dshift(ot); - gen_op_add_reg_T0(s->aflag + 1, R_ESI); + gen_op_add_reg_T0(s->aflag, R_ESI); } static inline void gen_scas(DisasContext *s, TCGMemOp ot) @@ -1144,7 +1155,7 @@ static inline void gen_scas(DisasContext *s, TCGMemOp ot) gen_op_ld_v(s, ot, cpu_T[1], cpu_A0); gen_op(s, OP_CMPL, ot, R_EAX); gen_op_movl_T0_Dshift(ot); - gen_op_add_reg_T0(s->aflag + 1, R_EDI); + gen_op_add_reg_T0(s->aflag, R_EDI); } static inline void gen_cmps(DisasContext *s, TCGMemOp ot) @@ -1154,8 +1165,8 @@ static inline void gen_cmps(DisasContext *s, TCGMemOp ot) gen_string_movl_A0_ESI(s); gen_op(s, OP_CMPL, ot, OR_TMP0); gen_op_movl_T0_Dshift(ot); - gen_op_add_reg_T0(s->aflag + 1, R_ESI); - gen_op_add_reg_T0(s->aflag + 1, R_EDI); + gen_op_add_reg_T0(s->aflag, R_ESI); + gen_op_add_reg_T0(s->aflag, R_EDI); } static inline void gen_ins(DisasContext *s, TCGMemOp ot) @@ -1172,7 +1183,7 @@ static inline void gen_ins(DisasContext *s, TCGMemOp ot) gen_helper_in_func(ot, cpu_T[0], cpu_tmp2_i32); gen_op_st_v(s, ot, cpu_T[0], cpu_A0); gen_op_movl_T0_Dshift(ot); - gen_op_add_reg_T0(s->aflag + 1, R_EDI); + gen_op_add_reg_T0(s->aflag, R_EDI); if (use_icount) gen_io_end(); } @@ -1190,7 +1201,7 @@ static inline void gen_outs(DisasContext *s, TCGMemOp ot) gen_helper_out_func(ot, cpu_tmp2_i32, cpu_tmp3_i32); gen_op_movl_T0_Dshift(ot); - gen_op_add_reg_T0(s->aflag + 1, R_ESI); + gen_op_add_reg_T0(s->aflag, R_ESI); if (use_icount) gen_io_end(); } @@ -1205,11 +1216,11 @@ static inline void gen_repz_ ## op(DisasContext *s, TCGMemOp ot, \ gen_update_cc_op(s); \ l2 = gen_jz_ecx_string(s, next_eip); \ gen_ ## op(s, ot); \ - gen_op_add_reg_im(s->aflag + 1, R_ECX, -1); \ + gen_op_add_reg_im(s->aflag, R_ECX, -1); \ /* a loop would cause two single step exceptions if ECX = 1 \ before rep string_insn */ \ if (!s->jmp_opt) \ - gen_op_jz_ecx(s->aflag + 1, l2); \ + gen_op_jz_ecx(s->aflag, l2); \ gen_jmp(s, cur_eip); \ } @@ -1223,11 +1234,11 @@ static inline void gen_repz_ ## op(DisasContext *s, TCGMemOp ot, \ gen_update_cc_op(s); \ l2 = gen_jz_ecx_string(s, next_eip); \ gen_ ## op(s, ot); \ - gen_op_add_reg_im(s->aflag + 1, R_ECX, -1); \ + gen_op_add_reg_im(s->aflag, R_ECX, -1); \ gen_update_cc_op(s); \ gen_jcc1(s, (JCC_Z << 1) | (nz ^ 1), l2); \ if (!s->jmp_opt) \ - gen_op_jz_ecx(s->aflag + 1, l2); \ + gen_op_jz_ecx(s->aflag, l2); \ gen_jmp(s, cur_eip); \ } @@ -1884,7 +1895,9 @@ static void gen_lea_modrm(CPUX86State *env, DisasContext *s, int modrm) mod = (modrm >> 6) & 3; rm = modrm & 7; - if (s->aflag) { + switch (s->aflag) { + case MO_64: + case MO_32: havesib = 0; base = rm; index = -1; @@ -1964,7 +1977,7 @@ static void gen_lea_modrm(CPUX86State *env, DisasContext *s, int modrm) tcg_gen_ld_tl(cpu_tmp0, cpu_env, offsetof(CPUX86State, segs[override].base)); if (CODE64(s)) { - if (s->aflag != 2) { + if (s->aflag == MO_32) { tcg_gen_ext32u_tl(cpu_A0, cpu_A0); } tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_tmp0); @@ -1974,10 +1987,12 @@ static void gen_lea_modrm(CPUX86State *env, DisasContext *s, int modrm) tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_tmp0); } - if (s->aflag != 2) { + if (s->aflag == MO_32) { tcg_gen_ext32u_tl(cpu_A0, cpu_A0); } - } else { + break; + + case MO_16: switch (mod) { case 0: if (rm == 6) { @@ -2043,6 +2058,10 @@ static void gen_lea_modrm(CPUX86State *env, DisasContext *s, int modrm) } gen_op_addl_A0_seg(s, override); } + break; + + default: + tcg_abort(); } } @@ -2055,8 +2074,9 @@ static void gen_nop_modrm(CPUX86State *env, DisasContext *s, int modrm) return; rm = modrm & 7; - if (s->aflag) { - + switch (s->aflag) { + case MO_64: + case MO_32: base = rm; if (base == 4) { @@ -2078,7 +2098,9 @@ static void gen_nop_modrm(CPUX86State *env, DisasContext *s, int modrm) s->pc += 4; break; } - } else { + break; + + case MO_16: switch (mod) { case 0: if (rm == 6) { @@ -2093,6 +2115,10 @@ static void gen_nop_modrm(CPUX86State *env, DisasContext *s, int modrm) s->pc += 2; break; } + break; + + default: + tcg_abort(); } } @@ -4396,16 +4422,8 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b, /* maskmov : we must prepare A0 */ if (mod != 3) goto illegal_op; -#ifdef TARGET_X86_64 - if (s->aflag == 2) { - gen_op_movq_A0_reg(R_EDI); - } else -#endif - { - gen_op_movl_A0_reg(R_EDI); - if (s->aflag == 0) - tcg_gen_ext16u_tl(cpu_A0, cpu_A0); - } + tcg_gen_mov_tl(cpu_A0, cpu_regs[R_EDI]); + gen_extu(s->aflag, cpu_A0); gen_add_A0_ds_seg(s); tcg_gen_addi_ptr(cpu_ptr0, cpu_env, op1_offset); @@ -4431,9 +4449,9 @@ static void gen_sse(CPUX86State *env, DisasContext *s, int b, static target_ulong disas_insn(CPUX86State *env, DisasContext *s, target_ulong pc_start) { - int b, prefixes, aflag, dflag; + int b, prefixes, dflag; int shift; - TCGMemOp ot; + TCGMemOp ot, aflag; int modrm, reg, rm, mod, op, opreg, val; target_ulong next_eip, tval; int rex_w, rex_r; @@ -4571,7 +4589,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, over 0x66 if both are present. */ dflag = (rex_w > 0 ? 2 : prefixes & PREFIX_DATA ? 0 : 1); /* In 64-bit mode, 0x67 selects 32-bit addressing. */ - aflag = (prefixes & PREFIX_ADR ? 1 : 2); + aflag = (prefixes & PREFIX_ADR ? MO_32 : MO_64); } else { /* In 16/32-bit mode, 0x66 selects the opposite data size. */ dflag = s->code32; @@ -4579,9 +4597,10 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, dflag ^= 1; } /* In 16/32-bit mode, 0x67 selects the opposite addressing. */ - aflag = s->code32; - if (prefixes & PREFIX_ADR) { - aflag ^= 1; + if (s->code32 ^ ((prefixes & PREFIX_ADR) != 0)) { + aflag = MO_32; + } else { + aflag = MO_16; } } @@ -5561,18 +5580,16 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, ot = MO_8; else ot = dflag + MO_16; + switch (s->aflag) { #ifdef TARGET_X86_64 - if (s->aflag == 2) { + case MO_64: offset_addr = cpu_ldq_code(env, s->pc); s->pc += 8; - } else + break; #endif - { - if (s->aflag) { - offset_addr = insn_get(env, s, MO_32); - } else { - offset_addr = insn_get(env, s, MO_16); - } + default: + offset_addr = insn_get(env, s, s->aflag); + break; } tcg_gen_movi_tl(cpu_A0, offset_addr); gen_add_A0_ds_seg(s); @@ -5586,24 +5603,10 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, } break; case 0xd7: /* xlat */ -#ifdef TARGET_X86_64 - if (s->aflag == 2) { - gen_op_movq_A0_reg(R_EBX); - gen_op_mov_TN_reg(MO_64, 0, R_EAX); - tcg_gen_andi_tl(cpu_T[0], cpu_T[0], 0xff); - tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_T[0]); - } else -#endif - { - gen_op_movl_A0_reg(R_EBX); - gen_op_mov_TN_reg(MO_32, 0, R_EAX); - tcg_gen_andi_tl(cpu_T[0], cpu_T[0], 0xff); - tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_T[0]); - if (s->aflag == 0) - tcg_gen_ext16u_tl(cpu_A0, cpu_A0); - else - tcg_gen_andi_tl(cpu_A0, cpu_A0, 0xffffffff); - } + tcg_gen_mov_tl(cpu_A0, cpu_regs[R_EBX]); + tcg_gen_ext8u_tl(cpu_T[0], cpu_regs[R_EAX]); + tcg_gen_add_tl(cpu_A0, cpu_A0, cpu_T[0]); + gen_extu(s->aflag, cpu_A0); gen_add_A0_ds_seg(s); gen_op_ld_v(s, MO_8, cpu_T[0], cpu_A0); gen_op_mov_reg_T0(MO_8, R_EAX); @@ -7133,17 +7136,17 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, switch(b) { case 0: /* loopnz */ case 1: /* loopz */ - gen_op_add_reg_im(s->aflag + 1, R_ECX, -1); - gen_op_jz_ecx(s->aflag + 1, l3); + gen_op_add_reg_im(s->aflag, R_ECX, -1); + gen_op_jz_ecx(s->aflag, l3); gen_jcc1(s, (JCC_Z << 1) | (b ^ 1), l1); break; case 2: /* loop */ - gen_op_add_reg_im(s->aflag + 1, R_ECX, -1); - gen_op_jnz_ecx(s->aflag + 1, l1); + gen_op_add_reg_im(s->aflag, R_ECX, -1); + gen_op_jnz_ecx(s->aflag, l1); break; default: case 3: /* jcxz */ - gen_op_jz_ecx(s->aflag + 1, l1); + gen_op_jz_ecx(s->aflag, l1); break; } @@ -7348,16 +7351,8 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, goto illegal_op; gen_update_cc_op(s); gen_jmp_im(pc_start - s->cs_base); -#ifdef TARGET_X86_64 - if (s->aflag == 2) { - gen_op_movq_A0_reg(R_EAX); - } else -#endif - { - gen_op_movl_A0_reg(R_EAX); - if (s->aflag == 0) - tcg_gen_ext16u_tl(cpu_A0, cpu_A0); - } + tcg_gen_mov_tl(cpu_A0, cpu_regs[R_EAX]); + gen_extu(s->aflag, cpu_A0); gen_add_A0_ds_seg(s); gen_helper_monitor(cpu_env, cpu_A0); break; @@ -7417,7 +7412,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); break; } else { - gen_helper_vmrun(cpu_env, tcg_const_i32(s->aflag), + gen_helper_vmrun(cpu_env, tcg_const_i32(s->aflag - 1), tcg_const_i32(s->pc - pc_start)); tcg_gen_exit_tb(0); s->is_jmp = DISAS_TB_JUMP; @@ -7435,7 +7430,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); break; } else { - gen_helper_vmload(cpu_env, tcg_const_i32(s->aflag)); + gen_helper_vmload(cpu_env, tcg_const_i32(s->aflag - 1)); } break; case 3: /* VMSAVE */ @@ -7445,7 +7440,7 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); break; } else { - gen_helper_vmsave(cpu_env, tcg_const_i32(s->aflag)); + gen_helper_vmsave(cpu_env, tcg_const_i32(s->aflag - 1)); } break; case 4: /* STGI */ @@ -7484,7 +7479,8 @@ static target_ulong disas_insn(CPUX86State *env, DisasContext *s, gen_exception(s, EXCP0D_GPF, pc_start - s->cs_base); break; } else { - gen_helper_invlpga(cpu_env, tcg_const_i32(s->aflag)); + gen_helper_invlpga(cpu_env, + tcg_const_i32(s->aflag - 1)); } break; default: |