[Qemu-devel] [4717] CRIS: Translator updates.

[Edgar E. Iglesias]

Revision: 4717
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4717
Author:   edgar_igl
Date:     2008-06-09 23:06:31 +0000 (Mon, 09 Jun 2008)

Log Message:
-----------
CRIS: Translator updates.
* RFN (Return From NMI) insn.
* Avoid unnecessary T0 transfers.
* Dont do tcg related init more than once.

Modified Paths:
--------------
    trunk/target-cris/translate.c

Modified: trunk/target-cris/translate.c
===================================================================
--- trunk/target-cris/translate.c       2008-06-09 20:44:19 UTC (rev 4716)
+++ trunk/target-cris/translate.c       2008-06-09 23:06:31 UTC (rev 4717)
@@ -735,7 +735,7 @@
                        else
                                tcg_gen_andi_tl(cpu_PR[PR_CCS], 
                                                cpu_PR[PR_CCS], ~X_FLAG);
-        }
+               }
 
                dc->flags_uptodate = 1;
        }
@@ -1530,7 +1530,6 @@
 
        cris_cc_mask(dc, CC_MASK_NZ);
 
-       t_gen_mov_TN_reg(cpu_T[0], dc->op2);
        cris_alu(dc, CC_OP_BTST,
                    cpu_T[0], cpu_R[dc->op2], tcg_const_tl(dc->op1), 4);
        cris_update_cc_op(dc, CC_OP_FLAGS, 4);
@@ -1968,11 +1967,10 @@
                    dc->op1, dc->op2));
 
        cris_cc_mask(dc, CC_MASK_NZ);
-       t_gen_mov_TN_reg(cpu_T[0], dc->op1);
        /* Size can only be qi or hi.  */
        t_gen_sext(cpu_T[1], cpu_R[dc->op1], size);
        cris_alu(dc, CC_OP_MOVE,
-                   cpu_R[dc->op2], cpu_T[0], cpu_T[1], 4);
+                   cpu_R[dc->op2], cpu_R[dc->op1], cpu_T[1], 4);
        return 2;
 }
 
@@ -2788,7 +2786,9 @@
                        break;
                case 5:
                        /* rfn.  */
-                       BUG();
+                       cris_evaluate_flags(dc);
+                       tcg_gen_helper_0_0(helper_rfn);
+                       dc->is_jmp = DISAS_UPDATE;
                        break;
                case 6:
                        /* break.  */
@@ -3271,13 +3271,21 @@
 CPUCRISState *cpu_cris_init (const char *cpu_model)
 {
        CPUCRISState *env;
+       static int tcg_initialized = 0;
        int i;
 
        env = qemu_mallocz(sizeof(CPUCRISState));
        if (!env)
                return NULL;
+
        cpu_exec_init(env);
+       cpu_reset(env);
 
+       if (tcg_initialized)
+               return env;
+
+       tcg_initialized = 1;
+
        cpu_env = tcg_global_reg_new(TCG_TYPE_PTR, TCG_AREG0, "env");
 #if TARGET_LONG_BITS > HOST_LONG_BITS
        cpu_T[0] = tcg_global_mem_new(TCG_TYPE_TL, 
@@ -3337,6 +3345,7 @@
        TCG_HELPER(helper_movl_sreg_reg);
        TCG_HELPER(helper_movl_reg_sreg);
        TCG_HELPER(helper_rfe);
+       TCG_HELPER(helper_rfn);
 
        TCG_HELPER(helper_evaluate_flags_muls);
        TCG_HELPER(helper_evaluate_flags_mulu);
@@ -3346,8 +3355,6 @@
        TCG_HELPER(helper_evaluate_flags_move_2);
        TCG_HELPER(helper_evaluate_flags);
        TCG_HELPER(helper_top_evaluate_flags);
-
-       cpu_reset(env);
        return env;
 }