diff --git a/configure b/configure
index acb4a4a8ae..0868ade649 100755
--- a/configure
+++ b/configure
@@ -1427,10 +1427,8 @@ case "$target_cpu" in
   ;;
   sh4|sh4eb)
     echo "TARGET_ARCH=sh4" >> $config_mak
-    echo "CONFIG_DYNGEN_OP=yes" >> $config_mak
     echo "#define TARGET_ARCH \"sh4\"" >> $config_h
     echo "#define TARGET_SH4 1" >> $config_h
-    echo "#define CONFIG_DYNGEN_OP 1" >> $config_h
     bflt="yes"
   ;;
   sparc)
diff --git a/target-sh4/helper.h b/target-sh4/helper.h
index 19f5981e6b..994dc0820d 100644
--- a/target-sh4/helper.h
+++ b/target-sh4/helper.h
@@ -37,6 +37,7 @@ DEF_HELPER(uint32_t, helper_float_FT, (uint32_t))
 DEF_HELPER(uint64_t, helper_float_DT, (uint32_t))
 DEF_HELPER(uint32_t, helper_fmul_FT, (uint32_t, uint32_t))
 DEF_HELPER(uint64_t, helper_fmul_DT, (uint64_t, uint64_t))
+DEF_HELPER(uint32_t, helper_fneg_T, (uint32_t))
 DEF_HELPER(uint32_t, helper_fsub_FT, (uint32_t, uint32_t))
 DEF_HELPER(uint64_t, helper_fsub_DT, (uint64_t, uint64_t))
 DEF_HELPER(uint32_t, helper_fsqrt_FT, (uint32_t))
diff --git a/target-sh4/op.c b/target-sh4/op.c
deleted file mode 100644
index 02d86fe768..0000000000
--- a/target-sh4/op.c
+++ /dev/null
@@ -1,27 +0,0 @@
-/*
- *  SH4 emulation
- *
- *  Copyright (c) 2005 Samuel Tardieu
- *
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
- *
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- *
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- */
-#include "exec.h"
-
-void OPPROTO op_fneg_frN(void)
-{
-    env->fregs[PARAM1] = float32_chs(env->fregs[PARAM1]);
-    RETURN();
-}
-
diff --git a/target-sh4/op_helper.c b/target-sh4/op_helper.c
index 5d9c4146af..48a170f79c 100644
--- a/target-sh4/op_helper.c
+++ b/target-sh4/op_helper.c
@@ -489,6 +489,12 @@ uint64_t helper_fmul_DT(uint64_t t0, uint64_t t1)
     return *(uint64_t*)(&ret);
 }
 
+uint32_t helper_fneg_T(uint32_t t0)
+{
+    float32 ret = float32_chs(*(float32*)&t0);
+    return *(uint32_t*)(&ret);
+}
+
 uint32_t helper_fsqrt_FT(uint32_t t0)
 {
     float32 ret = float32_sqrt(*(float32*)&t0, &env->fp_status);
diff --git a/target-sh4/translate.c b/target-sh4/translate.c
index 30362a8f19..ff43882796 100644
--- a/target-sh4/translate.c
+++ b/target-sh4/translate.c
@@ -1593,7 +1593,13 @@ void _decode_opc(DisasContext * ctx)
 	}
 	return;
     case 0xf04d: /* fneg FRn/DRn - FPSCR: Nothing */
-	gen_op_fneg_frN(FREG(B11_8));
+	{
+	    TCGv fp = tcg_temp_new(TCG_TYPE_I32);
+	    gen_load_fpr32(fp, FREG(B11_8));
+	    tcg_gen_helper_1_1(helper_fneg_T, fp, fp);
+	    gen_store_fpr32(fp, FREG(B11_8));
+	    tcg_temp_free(fp);
+	}
 	return;
     case 0xf05d: /* fabs FRn/DRn */
 	if (ctx->fpscr & FPSCR_PR) {