diff options
| -rw-r--r-- | target-ppc/translate.c | 194 |
1 files changed, 69 insertions, 125 deletions
diff --git a/target-ppc/translate.c b/target-ppc/translate.c index fce261b..abc75e2 100644 --- a/target-ppc/translate.c +++ b/target-ppc/translate.c @@ -765,73 +765,40 @@ static inline void gen_op_arith_compute_ov(DisasContext *ctx, TCGv arg0, tcg_gen_or_tl(cpu_so, cpu_so, cpu_ov); } -static inline void gen_op_arith_compute_ca(DisasContext *ctx, TCGv arg1, - TCGv arg2, int sub) -{ - TCGv t0 = tcg_temp_new(), t1 = arg1, t2 = arg2; - -#if defined(TARGET_PPC64) - if (!(ctx->sf_mode)) { - t1 = t0; - tcg_gen_ext32u_tl(t1, arg1); - t2 = tcg_temp_new(); - tcg_gen_ext32u_tl(t2, arg2); - } -#endif - - tcg_gen_setcond_tl(sub ? TCG_COND_LEU : TCG_COND_LTU, t0, t1, t2); - tcg_gen_or_tl(cpu_ca, cpu_ca, t0); - - tcg_temp_free(t0); -#if defined(TARGET_PPC64) - if (!(ctx->sf_mode)) { - tcg_temp_free(t2); - } -#endif -} - /* Common add function */ static inline void gen_op_arith_add(DisasContext *ctx, TCGv ret, TCGv arg1, - TCGv arg2, int add_ca, int compute_ca, - int compute_ov) + TCGv arg2, bool add_ca, bool compute_ca, + bool compute_ov, bool compute_rc0) { - TCGv t0, t1; + TCGv t0 = ret; - if ((!compute_ca && !compute_ov) || - (!TCGV_EQUAL(ret,arg1) && !TCGV_EQUAL(ret, arg2))) { - t0 = ret; - } else { + if (((compute_ca && add_ca) || compute_ov) + && (TCGV_EQUAL(ret, arg1) || TCGV_EQUAL(ret, arg2))) { t0 = tcg_temp_new(); } - if (add_ca) { - t1 = tcg_temp_local_new(); - tcg_gen_mov_tl(t1, cpu_ca); - } else { - TCGV_UNUSED(t1); - } - if (compute_ca) { - /* Start with XER CA disabled, the most likely case */ - tcg_gen_movi_tl(cpu_ca, 0); + TCGv zero = tcg_const_tl(0); + if (add_ca) { + tcg_gen_add2_tl(t0, cpu_ca, arg1, zero, cpu_ca, zero); + tcg_gen_add2_tl(t0, cpu_ca, t0, cpu_ca, arg2, zero); + } else { + tcg_gen_add2_tl(t0, cpu_ca, arg1, zero, arg2, zero); + } + tcg_temp_free(zero); + } else { + tcg_gen_add_tl(t0, arg1, arg2); + if (add_ca) { + tcg_gen_add_tl(t0, t0, cpu_ca); + } } - tcg_gen_add_tl(t0, arg1, arg2); - - if (compute_ca) { - gen_op_arith_compute_ca(ctx, t0, arg1, 0); - } - if (add_ca) { - tcg_gen_add_tl(t0, t0, t1); - gen_op_arith_compute_ca(ctx, t0, t1, 0); - tcg_temp_free(t1); - } if (compute_ov) { gen_op_arith_compute_ov(ctx, t0, arg1, arg2, 0); } - - if (unlikely(Rc(ctx->opcode) != 0)) + if (unlikely(compute_rc0)) { gen_set_Rc0(ctx, t0); + } if (!TCGV_EQUAL(t0, ret)) { tcg_gen_mov_tl(ret, t0); @@ -840,21 +807,21 @@ static inline void gen_op_arith_add(DisasContext *ctx, TCGv ret, TCGv arg1, } /* Add functions with two operands */ #define GEN_INT_ARITH_ADD(name, opc3, add_ca, compute_ca, compute_ov) \ -static void glue(gen_, name)(DisasContext *ctx) \ +static void glue(gen_, name)(DisasContext *ctx) \ { \ gen_op_arith_add(ctx, cpu_gpr[rD(ctx->opcode)], \ cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], \ - add_ca, compute_ca, compute_ov); \ + add_ca, compute_ca, compute_ov, Rc(ctx->opcode)); \ } /* Add functions with one operand and one immediate */ #define GEN_INT_ARITH_ADD_CONST(name, opc3, const_val, \ add_ca, compute_ca, compute_ov) \ -static void glue(gen_, name)(DisasContext *ctx) \ +static void glue(gen_, name)(DisasContext *ctx) \ { \ - TCGv t0 = tcg_const_local_tl(const_val); \ + TCGv t0 = tcg_const_tl(const_val); \ gen_op_arith_add(ctx, cpu_gpr[rD(ctx->opcode)], \ cpu_gpr[rA(ctx->opcode)], t0, \ - add_ca, compute_ca, compute_ov); \ + add_ca, compute_ca, compute_ov, Rc(ctx->opcode)); \ tcg_temp_free(t0); \ } @@ -882,40 +849,27 @@ static void gen_addi(DisasContext *ctx) /* li case */ tcg_gen_movi_tl(cpu_gpr[rD(ctx->opcode)], simm); } else { - tcg_gen_addi_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)], simm); + tcg_gen_addi_tl(cpu_gpr[rD(ctx->opcode)], + cpu_gpr[rA(ctx->opcode)], simm); } } /* addic addic.*/ -static inline void gen_op_addic(DisasContext *ctx, TCGv ret, TCGv arg1, - int compute_Rc0) +static inline void gen_op_addic(DisasContext *ctx, bool compute_rc0) { - target_long simm = SIMM(ctx->opcode); - - /* Start with XER CA disabled, the most likely case */ - tcg_gen_movi_tl(cpu_ca, 0); - - if (likely(simm != 0)) { - TCGv t0 = tcg_temp_local_new(); - tcg_gen_addi_tl(t0, arg1, simm); - gen_op_arith_compute_ca(ctx, t0, arg1, 0); - tcg_gen_mov_tl(ret, t0); - tcg_temp_free(t0); - } else { - tcg_gen_mov_tl(ret, arg1); - } - if (compute_Rc0) { - gen_set_Rc0(ctx, ret); - } + TCGv c = tcg_const_tl(SIMM(ctx->opcode)); + gen_op_arith_add(ctx, cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)], + c, 0, 1, 0, compute_rc0); + tcg_temp_free(c); } static void gen_addic(DisasContext *ctx) { - gen_op_addic(ctx, cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)], 0); + gen_op_addic(ctx, 0); } static void gen_addic_(DisasContext *ctx) { - gen_op_addic(ctx, cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)], 1); + gen_op_addic(ctx, 1); } /* addis */ @@ -927,7 +881,8 @@ static void gen_addis(DisasContext *ctx) /* lis case */ tcg_gen_movi_tl(cpu_gpr[rD(ctx->opcode)], simm << 16); } else { - tcg_gen_addi_tl(cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)], simm << 16); + tcg_gen_addi_tl(cpu_gpr[rD(ctx->opcode)], + cpu_gpr[rA(ctx->opcode)], simm << 16); } } @@ -1212,49 +1167,43 @@ static void gen_nego(DisasContext *ctx) /* Common subf function */ static inline void gen_op_arith_subf(DisasContext *ctx, TCGv ret, TCGv arg1, - TCGv arg2, int add_ca, int compute_ca, - int compute_ov) + TCGv arg2, bool add_ca, bool compute_ca, + bool compute_ov, bool compute_rc0) { - TCGv t0, t1; - - if ((!compute_ca && !compute_ov) || - (!TCGV_EQUAL(ret, arg1) && !TCGV_EQUAL(ret, arg2))) { - t0 = ret; - } else { - t0 = tcg_temp_local_new(); - } - - if (add_ca) { - t1 = tcg_temp_local_new(); - tcg_gen_mov_tl(t1, cpu_ca); - } else { - TCGV_UNUSED(t1); - } + TCGv t0 = ret; - if (compute_ca) { - /* Start with XER CA disabled, the most likely case */ - tcg_gen_movi_tl(cpu_ca, 0); + if (((add_ca && compute_ca) || compute_ov) + && (TCGV_EQUAL(ret, arg1) || TCGV_EQUAL(ret, arg2))) { + t0 = tcg_temp_new(); } if (add_ca) { - tcg_gen_not_tl(t0, arg1); - tcg_gen_add_tl(t0, t0, arg2); - gen_op_arith_compute_ca(ctx, t0, arg2, 0); - tcg_gen_add_tl(t0, t0, t1); - gen_op_arith_compute_ca(ctx, t0, t1, 0); - tcg_temp_free(t1); + /* dest = ~arg1 + arg2 + ca = arg2 - arg1 + ca - 1. */ + if (compute_ca) { + TCGv zero; + tcg_gen_subi_tl(cpu_ca, cpu_ca, 1); + zero = tcg_const_tl(0); + tcg_gen_add2_tl(t0, cpu_ca, arg2, zero, cpu_ca, zero); + tcg_gen_sub2_tl(t0, cpu_ca, t0, cpu_ca, arg1, zero); + tcg_temp_free(zero); + } else { + tcg_gen_sub_tl(t0, arg2, arg1); + tcg_gen_add_tl(t0, t0, cpu_ca); + tcg_gen_subi_tl(t0, t0, 1); + } } else { - tcg_gen_sub_tl(t0, arg2, arg1); if (compute_ca) { - gen_op_arith_compute_ca(ctx, t0, arg2, 1); + tcg_gen_setcond_tl(TCG_COND_GEU, cpu_ca, arg2, arg1); } + tcg_gen_sub_tl(t0, arg2, arg1); } + if (compute_ov) { gen_op_arith_compute_ov(ctx, t0, arg1, arg2, 1); } - - if (unlikely(Rc(ctx->opcode) != 0)) + if (unlikely(compute_rc0)) { gen_set_Rc0(ctx, t0); + } if (!TCGV_EQUAL(t0, ret)) { tcg_gen_mov_tl(ret, t0); @@ -1263,21 +1212,21 @@ static inline void gen_op_arith_subf(DisasContext *ctx, TCGv ret, TCGv arg1, } /* Sub functions with Two operands functions */ #define GEN_INT_ARITH_SUBF(name, opc3, add_ca, compute_ca, compute_ov) \ -static void glue(gen_, name)(DisasContext *ctx) \ +static void glue(gen_, name)(DisasContext *ctx) \ { \ gen_op_arith_subf(ctx, cpu_gpr[rD(ctx->opcode)], \ cpu_gpr[rA(ctx->opcode)], cpu_gpr[rB(ctx->opcode)], \ - add_ca, compute_ca, compute_ov); \ + add_ca, compute_ca, compute_ov, Rc(ctx->opcode)); \ } /* Sub functions with one operand and one immediate */ #define GEN_INT_ARITH_SUBF_CONST(name, opc3, const_val, \ add_ca, compute_ca, compute_ov) \ -static void glue(gen_, name)(DisasContext *ctx) \ +static void glue(gen_, name)(DisasContext *ctx) \ { \ - TCGv t0 = tcg_const_local_tl(const_val); \ + TCGv t0 = tcg_const_tl(const_val); \ gen_op_arith_subf(ctx, cpu_gpr[rD(ctx->opcode)], \ cpu_gpr[rA(ctx->opcode)], t0, \ - add_ca, compute_ca, compute_ov); \ + add_ca, compute_ca, compute_ov, Rc(ctx->opcode)); \ tcg_temp_free(t0); \ } /* subf subf. subfo subfo. */ @@ -1299,15 +1248,10 @@ GEN_INT_ARITH_SUBF_CONST(subfzeo, 0x16, 0, 1, 1, 1) /* subfic */ static void gen_subfic(DisasContext *ctx) { - /* Start with XER CA disabled, the most likely case */ - tcg_gen_movi_tl(cpu_ca, 0); - TCGv t0 = tcg_temp_local_new(); - TCGv t1 = tcg_const_local_tl(SIMM(ctx->opcode)); - tcg_gen_sub_tl(t0, t1, cpu_gpr[rA(ctx->opcode)]); - gen_op_arith_compute_ca(ctx, t0, t1, 1); - tcg_temp_free(t1); - tcg_gen_mov_tl(cpu_gpr[rD(ctx->opcode)], t0); - tcg_temp_free(t0); + TCGv c = tcg_const_tl(SIMM(ctx->opcode)); + gen_op_arith_subf(ctx, cpu_gpr[rD(ctx->opcode)], cpu_gpr[rA(ctx->opcode)], + c, 0, 1, 0, 0); + tcg_temp_free(c); } /*** Integer logical ***/ |