[Qemu-devel] [5168] ppc: Convert op_subf to TCG

[Qemu-devel] [5168] ppc: Convert op_subf to TCG

[Aurelien Jarno]

Revision: 5168
          http://svn.sv.gnu.org/viewvc/?view=rev&root=qemu&revision=5168
Author:   aurel32
Date:     2008-09-05 14:19:51 +0000 (Fri, 05 Sep 2008)

Log Message:
-----------
ppc: Convert op_subf to TCG

Replace op_subf with tcg_gen_sub_tl.

Signed-off-by: Andreas Faerber <andreas.faerber@web.de>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>

Modified Paths:
--------------
    trunk/target-ppc/op.c
    trunk/target-ppc/translate.c

Modified: trunk/target-ppc/op.c
===================================================================
--- trunk/target-ppc/op.c	2008-09-05 14:19:43 UTC (rev 5167)
+++ trunk/target-ppc/op.c	2008-09-05 14:19:51 UTC (rev 5168)
@@ -881,13 +881,6 @@
 }
 #endif
 
-/* subtract from */
-void OPPROTO op_subf (void)
-{
-    T0 = T1 - T0;
-    RETURN();
-}
-
 /* subtract from carrying */
 void OPPROTO op_check_subfc (void)
 {

Modified: trunk/target-ppc/translate.c
===================================================================
--- trunk/target-ppc/translate.c	2008-09-05 14:19:43 UTC (rev 5167)
+++ trunk/target-ppc/translate.c	2008-09-05 14:19:51 UTC (rev 5168)
@@ -950,10 +950,14 @@
 /* neg    neg.    nego    nego.    */
 GEN_INT_ARITH1_64 (neg,    0x1F, 0x08, 0x03, PPC_INTEGER);
 /* subf   subf.   subfo   subfo.   */
+static always_inline void gen_op_subf (void)
+{
+    tcg_gen_sub_tl(cpu_T[0], cpu_T[1], cpu_T[0]);
+}
 static always_inline void gen_op_subfo (void)
 {
     tcg_gen_not_tl(cpu_T[2], cpu_T[0]);
-    gen_op_subf();
+    tcg_gen_sub_tl(cpu_T[0], cpu_T[1], cpu_T[0]);
     gen_op_check_addo();
 }
 #if defined(TARGET_PPC64)
@@ -961,7 +965,7 @@
 static always_inline void gen_op_subfo_64 (void)
 {
     tcg_gen_not_i64(cpu_T[2], cpu_T[0]);
-    gen_op_subf();
+    tcg_gen_sub_tl(cpu_T[0], cpu_T[1], cpu_T[0]);
     gen_op_check_addo_64();
 }
 #endif
@@ -969,26 +973,26 @@
 /* subfc  subfc.  subfco  subfco.  */
 static always_inline void gen_op_subfc (void)
 {
-    gen_op_subf();
+    tcg_gen_sub_tl(cpu_T[0], cpu_T[1], cpu_T[0]);
     gen_op_check_subfc();
 }
 static always_inline void gen_op_subfco (void)
 {
     tcg_gen_not_tl(cpu_T[2], cpu_T[0]);
-    gen_op_subf();
+    tcg_gen_sub_tl(cpu_T[0], cpu_T[1], cpu_T[0]);
     gen_op_check_subfc();
     gen_op_check_addo();
 }
 #if defined(TARGET_PPC64)
 static always_inline void gen_op_subfc_64 (void)
 {
-    gen_op_subf();
+    tcg_gen_sub_tl(cpu_T[0], cpu_T[1], cpu_T[0]);
     gen_op_check_subfc_64();
 }
 static always_inline void gen_op_subfco_64 (void)
 {
     tcg_gen_not_i64(cpu_T[2], cpu_T[0]);
-    gen_op_subf();
+    tcg_gen_sub_tl(cpu_T[0], cpu_T[1], cpu_T[0]);
     gen_op_check_subfc_64();
     gen_op_check_addo_64();
 }