projects / qemu / blobdiff
? search:
summary | shortlog | log | commit | commitdiff | tree
raw | inline | side by side
converted MUL/IMUL to TCG
[qemu] / target-i386 / translate.c
diff --git a/target-i386/translate.c b/target-i386/translate.c
index 0755987..c73fac9 100644 (file)
--- a/target-i386/translate.c
+++ b/target-i386/translate.c
@@ -3799,21 +3799,64 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         case 4: /* mul */
             switch(ot) {
             case OT_BYTE:
-                gen_op_mulb_AL_T0();
+                gen_op_mov_TN_reg(OT_BYTE, 1, R_EAX);
+                tcg_gen_ext8u_tl(cpu_T[0], cpu_T[0]);
+                tcg_gen_ext8u_tl(cpu_T[1], cpu_T[1]);
+                /* XXX: use 32 bit mul which could be faster */
+                tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
+                gen_op_mov_reg_T0(OT_WORD, R_EAX);
+                tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
+                tcg_gen_andi_tl(cpu_cc_src, cpu_T[0], 0xff00);
                 s->cc_op = CC_OP_MULB;
                 break;
             case OT_WORD:
-                gen_op_mulw_AX_T0();
+                gen_op_mov_TN_reg(OT_WORD, 1, R_EAX);
+                tcg_gen_ext16u_tl(cpu_T[0], cpu_T[0]);
+                tcg_gen_ext16u_tl(cpu_T[1], cpu_T[1]);
+                /* XXX: use 32 bit mul which could be faster */
+                tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
+                gen_op_mov_reg_T0(OT_WORD, R_EAX);
+                tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
+                tcg_gen_shri_tl(cpu_T[0], cpu_T[0], 16);
+                gen_op_mov_reg_T0(OT_WORD, R_EDX);
+                tcg_gen_mov_tl(cpu_cc_src, cpu_T[0]);
                 s->cc_op = CC_OP_MULW;
                 break;
             default:
             case OT_LONG:
-                gen_op_mull_EAX_T0();
+#ifdef TARGET_X86_64
+                gen_op_mov_TN_reg(OT_LONG, 1, R_EAX);
+                tcg_gen_ext32u_tl(cpu_T[0], cpu_T[0]);
+                tcg_gen_ext32u_tl(cpu_T[1], cpu_T[1]);
+                tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
+                gen_op_mov_reg_T0(OT_LONG, R_EAX);
+                tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
+                tcg_gen_shri_tl(cpu_T[0], cpu_T[0], 32);
+                gen_op_mov_reg_T0(OT_LONG, R_EDX);
+                tcg_gen_mov_tl(cpu_cc_src, cpu_T[0]);
+#else
+                {
+                    TCGv t0, t1;
+                    t0 = tcg_temp_new(TCG_TYPE_I64);
+                    t1 = tcg_temp_new(TCG_TYPE_I64);
+                    gen_op_mov_TN_reg(OT_LONG, 1, R_EAX);
+                    tcg_gen_extu_i32_i64(t0, cpu_T[0]);
+                    tcg_gen_extu_i32_i64(t1, cpu_T[1]);
+                    tcg_gen_mul_i64(t0, t0, t1);
+                    tcg_gen_trunc_i64_i32(cpu_T[0], t0);
+                    gen_op_mov_reg_T0(OT_LONG, R_EAX);
+                    tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
+                    tcg_gen_shri_i64(t0, t0, 32);
+                    tcg_gen_trunc_i64_i32(cpu_T[0], t0);
+                    gen_op_mov_reg_T0(OT_LONG, R_EDX);
+                    tcg_gen_mov_tl(cpu_cc_src, cpu_T[0]);
+                }
+#endif
                 s->cc_op = CC_OP_MULL;
                 break;
 #ifdef TARGET_X86_64
             case OT_QUAD:
-                gen_op_mulq_EAX_T0();
+                tcg_gen_helper_0_1(helper_mulq_EAX_T0, cpu_T[0]);
                 s->cc_op = CC_OP_MULQ;
                 break;
 #endif
@@ -3822,21 +3865,68 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
         case 5: /* imul */
             switch(ot) {
             case OT_BYTE:
-                gen_op_imulb_AL_T0();
+                gen_op_mov_TN_reg(OT_BYTE, 1, R_EAX);
+                tcg_gen_ext8s_tl(cpu_T[0], cpu_T[0]);
+                tcg_gen_ext8s_tl(cpu_T[1], cpu_T[1]);
+                /* XXX: use 32 bit mul which could be faster */
+                tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
+                gen_op_mov_reg_T0(OT_WORD, R_EAX);
+                tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
+                tcg_gen_ext8s_tl(cpu_tmp0, cpu_T[0]);
+                tcg_gen_sub_tl(cpu_cc_src, cpu_T[0], cpu_tmp0);
                 s->cc_op = CC_OP_MULB;
                 break;
             case OT_WORD:
-                gen_op_imulw_AX_T0();
+                gen_op_mov_TN_reg(OT_WORD, 1, R_EAX);
+                tcg_gen_ext16s_tl(cpu_T[0], cpu_T[0]);
+                tcg_gen_ext16s_tl(cpu_T[1], cpu_T[1]);
+                /* XXX: use 32 bit mul which could be faster */
+                tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
+                gen_op_mov_reg_T0(OT_WORD, R_EAX);
+                tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
+                tcg_gen_ext16s_tl(cpu_tmp0, cpu_T[0]);
+                tcg_gen_sub_tl(cpu_cc_src, cpu_T[0], cpu_tmp0);
+                tcg_gen_shri_tl(cpu_T[0], cpu_T[0], 16);
+                gen_op_mov_reg_T0(OT_WORD, R_EDX);
                 s->cc_op = CC_OP_MULW;
                 break;
             default:
             case OT_LONG:
-                gen_op_imull_EAX_T0();
+#ifdef TARGET_X86_64
+                gen_op_mov_TN_reg(OT_LONG, 1, R_EAX);
+                tcg_gen_ext32s_tl(cpu_T[0], cpu_T[0]);
+                tcg_gen_ext32s_tl(cpu_T[1], cpu_T[1]);
+                tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
+                gen_op_mov_reg_T0(OT_LONG, R_EAX);
+                tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
+                tcg_gen_ext32s_tl(cpu_tmp0, cpu_T[0]);
+                tcg_gen_sub_tl(cpu_cc_src, cpu_T[0], cpu_tmp0);
+                tcg_gen_shri_tl(cpu_T[0], cpu_T[0], 32);
+                gen_op_mov_reg_T0(OT_LONG, R_EDX);
+#else
+                {
+                    TCGv t0, t1;
+                    t0 = tcg_temp_new(TCG_TYPE_I64);
+                    t1 = tcg_temp_new(TCG_TYPE_I64);
+                    gen_op_mov_TN_reg(OT_LONG, 1, R_EAX);
+                    tcg_gen_ext_i32_i64(t0, cpu_T[0]);
+                    tcg_gen_ext_i32_i64(t1, cpu_T[1]);
+                    tcg_gen_mul_i64(t0, t0, t1);
+                    tcg_gen_trunc_i64_i32(cpu_T[0], t0);
+                    gen_op_mov_reg_T0(OT_LONG, R_EAX);
+                    tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
+                    tcg_gen_sari_tl(cpu_tmp0, cpu_T[0], 31);
+                    tcg_gen_shri_i64(t0, t0, 32);
+                    tcg_gen_trunc_i64_i32(cpu_T[0], t0);
+                    gen_op_mov_reg_T0(OT_LONG, R_EDX);
+                    tcg_gen_sub_tl(cpu_cc_src, cpu_T[0], cpu_tmp0);
+                }
+#endif
                 s->cc_op = CC_OP_MULL;
                 break;
 #ifdef TARGET_X86_64
             case OT_QUAD:
-                gen_op_imulq_EAX_T0();
+                tcg_gen_helper_0_1(helper_imulq_EAX_T0, cpu_T[0]);
                 s->cc_op = CC_OP_MULQ;
                 break;
 #endif
@@ -4104,13 +4194,41 @@ static target_ulong disas_insn(DisasContext *s, target_ulong pc_start)
 
 #ifdef TARGET_X86_64
         if (ot == OT_QUAD) {
-            gen_op_imulq_T0_T1();
+            tcg_gen_helper_1_2(helper_imulq_T0_T1, cpu_T[0], cpu_T[0], cpu_T[1]);
         } else
 #endif
         if (ot == OT_LONG) {
-            gen_op_imull_T0_T1();
+#ifdef TARGET_X86_64
+                tcg_gen_ext32s_tl(cpu_T[0], cpu_T[0]);
+                tcg_gen_ext32s_tl(cpu_T[1], cpu_T[1]);
+                tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
+                tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
+                tcg_gen_ext32s_tl(cpu_tmp0, cpu_T[0]);
+                tcg_gen_sub_tl(cpu_cc_src, cpu_T[0], cpu_tmp0);
+#else
+                {
+                    TCGv t0, t1;
+                    t0 = tcg_temp_new(TCG_TYPE_I64);
+                    t1 = tcg_temp_new(TCG_TYPE_I64);
+                    tcg_gen_ext_i32_i64(t0, cpu_T[0]);
+                    tcg_gen_ext_i32_i64(t1, cpu_T[1]);
+                    tcg_gen_mul_i64(t0, t0, t1);
+                    tcg_gen_trunc_i64_i32(cpu_T[0], t0);
+                    tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
+                    tcg_gen_sari_tl(cpu_tmp0, cpu_T[0], 31);
+                    tcg_gen_shri_i64(t0, t0, 32);
+                    tcg_gen_trunc_i64_i32(cpu_T[1], t0);
+                    tcg_gen_sub_tl(cpu_cc_src, cpu_T[1], cpu_tmp0);
+                }
+#endif
         } else {
-            gen_op_imulw_T0_T1();
+            tcg_gen_ext16s_tl(cpu_T[0], cpu_T[0]);
+            tcg_gen_ext16s_tl(cpu_T[1], cpu_T[1]);
+            /* XXX: use 32 bit mul which could be faster */
+            tcg_gen_mul_tl(cpu_T[0], cpu_T[0], cpu_T[1]);
+            tcg_gen_mov_tl(cpu_cc_dst, cpu_T[0]);
+            tcg_gen_ext16s_tl(cpu_tmp0, cpu_T[0]);
+            tcg_gen_sub_tl(cpu_cc_src, cpu_T[0], cpu_tmp0);
         }
         gen_op_mov_reg_T0(ot, reg);
         s->cc_op = CC_OP_MULB + ot;
Unnamed repository; edit this file to name it for gitweb.