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[Qemu-devel] [4313] CRIS: Convert divide step to TCG.


From: Edgar E. Iglesias
Subject: [Qemu-devel] [4313] CRIS: Convert divide step to TCG.
Date: Sat, 03 May 2008 21:34:40 +0000

Revision: 4313
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=4313
Author:   edgar_igl
Date:     2008-05-03 21:34:39 +0000 (Sat, 03 May 2008)

Log Message:
-----------
CRIS: Convert divide step to TCG.

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

Modified: trunk/target-cris/translate.c
===================================================================
--- trunk/target-cris/translate.c       2008-05-03 20:52:26 UTC (rev 4312)
+++ trunk/target-cris/translate.c       2008-05-03 21:34:39 UTC (rev 4313)
@@ -375,6 +375,23 @@
        tcg_gen_discard_i32(n);
 }
 
+static void t_gen_cris_dstep(TCGv d, TCGv s)
+{
+       int l1;
+
+       l1 = gen_new_label();
+
+       /* 
+        * d <<= 1
+        * if (d >= s)
+        *    d -= s;
+        */
+       tcg_gen_shli_tl(d, d, 1);
+       tcg_gen_brcond_tl(TCG_COND_LTU, d, s, l1);
+       tcg_gen_sub_tl(d, d, s);
+       gen_set_label(l1);
+}
+
 /* Extended arithmetics on CRIS.  */
 static inline void t_gen_add_flag(TCGv d, int flag)
 {
@@ -725,7 +742,7 @@
                }
                break;
                case CC_OP_DSTEP:
-                       gen_op_dstep_T0_T1();
+                       t_gen_cris_dstep(cpu_T[0], cpu_T[1]);
                        break;
                case CC_OP_BOUND:
                {






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