target-ppc: Decimal Floating Point

new file mode 100644
index 0000000..91aa334
@@ -0,0 +1,47 @@
+/* Configure decNumber for either host or target.
+   Copyright (C) 2008, 2009 Free Software Foundation, Inc.
+
+   This file is part of GCC.
+
+   GCC is free software; you can redistribute it and/or modify it under
+   the terms of the GNU General Public License as published by the Free
+   Software Foundation; either version 3, or (at your option) any later
+   version.
+
+   GCC 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 General Public License
+   for more details.
+
+Under Section 7 of GPL version 3, you are granted additional
+permissions described in the GCC Runtime Library Exception, version
+3.1, as published by the Free Software Foundation.
+
+You should have received a copy of the GNU General Public License and
+a copy of the GCC Runtime Library Exception along with this program;
+see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+<http://www.gnu.org/licenses/>.  */
+
+#ifdef IN_LIBGCC2
+
+#include "tconfig.h"
+#include "coretypes.h"
+#include "tm.h"
+
+#ifndef LIBGCC2_WORDS_BIG_ENDIAN
+#define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
+#endif
+
+#ifndef LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
+#define LIBGCC2_FLOAT_WORDS_BIG_ENDIAN LIBGCC2_WORDS_BIG_ENDIAN
+#endif
+
+#if LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
+#define WORDS_BIGENDIAN 1
+#endif
+
+#else
+
+#include "config.h"
+
+#endif

new file mode 100644
index 0000000..277b1bb
@@ -0,0 +1,14 @@
+#if !defined(DECCOMMONSYMBOLS)
+#define DECCOMMONSYMBOLS
+
+#ifdef IN_LIBGCC2
+#define DECCOMBFROM __decCOMBFROM
+#define DECCOMBMSD __decCOMBMSD
+#endif
+
+#ifdef __STDC_DEC_FP__
+#define DECCOMBFROM ___decCOMBFROM
+#define DECCOMBMSD ___decCOMBMSD
+#endif
+
+#endif

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new file mode 100644
index 0000000..523ec55
@@ -0,0 +1,26 @@
+#if !defined(DECDPDSYMBOLS)
+#define DECDPDSYMBOLS
+
+#ifdef IN_LIBGCC2
+#define BCD2DPD __decBCD2DPD
+#define BIN2BCD8 __decBIN2BCD8
+#define BIN2CHAR __decBIN2CHAR
+#define BIN2DPD __decBIN2DPD
+#define DPD2BCD8 __decDPD2BCD8
+#define DPD2BIN __decDPD2BIN
+#define DPD2BINK __decDPD2BINK
+#define DPD2BINM __decDPD2BINM
+#endif
+
+#ifdef __STDC_DEC_FP__
+#define BCD2DPD ___decBCD2DPD
+#define BIN2BCD8 ___decBIN2BCD8
+#define BIN2CHAR ___decBIN2CHAR
+#define BIN2DPD ___decBIN2DPD
+#define DPD2BCD8 ___decDPD2BCD8
+#define DPD2BIN ___decDPD2BIN
+#define DPD2BINK ___decDPD2BINK
+#define DPD2BINM ___decDPD2BINM
+#endif
+
+#endif

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index cdbb244..2e8f2e1 100644
@@ -232,7 +232,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 
   /* decContext routines					      */
 
-  #include "decContextSymbols.h"
+  #include "libdecnumber/decContextSymbols.h"
 
   extern decContext  * decContextClearStatus(decContext *, uint32_t);
   extern decContext  * decContextDefault(decContext *, int32_t);

index 136bb9d..ddbafd1 100644
@@ -50,7 +50,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
   #define DECDOUBLE_Ehigh (DECDOUBLE_Emax + DECDOUBLE_Bias - (DECDOUBLE_Pmax-1))
 
   /* Required includes						      */
-  #include "decContext.h"
+  #include "libdecnumber/decContext.h"
   #include "decQuad.h"
 
   /* The decDouble decimal 64-bit type, accessible by various types */

index 5cf18ab..0e912db 100644
@@ -34,7 +34,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
   #define DECAUTHOR   "Mike Cowlishaw"		      /* Who to blame */
 
   #if !defined(DECCONTEXT)
-    #include "decContext.h"
+    #include "libdecnumber/decContext.h"
   #endif
 
   /* Bit settings for decNumber.bits				      */

@@ -106,7 +106,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
   /* decNumber public functions and macros			      */
   /* ---------------------------------------------------------------- */
 
-  #include "decNumberSymbols.h"
+  #include "libdecnumber/decNumberSymbols.h"
 
   /* Conversions						      */
   decNumber * decNumberFromInt32(decNumber *, int32_t);

index 71c8467..431e4e6 100644
@@ -39,7 +39,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 
   #include <stdlib.h>	      /* for abs			      */
   #include <string.h>	      /* for memset, strcpy		      */
-  #include "dconfig.h"	      /* for WORDS_BIGENDIAN                  */
+  #include "libdecnumber/dconfig.h"
 
   /* Conditional code flag -- set this to match hardware platform     */
   /* 1=little-endian, 0=big-endian	                              */

index c8ec11c..ed91c39 100644
@@ -52,7 +52,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
   #define DECQUAD_Ehigh (DECQUAD_Emax + DECQUAD_Bias - (DECQUAD_Pmax-1))
 
   /* Required include						      */
-  #include "decContext.h"
+  #include "libdecnumber/decContext.h"
 
   /* The decQuad decimal 128-bit type, accessible by various types */
   typedef union {

index 9fc532b..ee29b2d 100644
@@ -55,7 +55,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
     #define DECNUMDIGITS DECIMAL128_Pmax /* size if not already defined*/
   #endif
   #ifndef DECNUMBER
-    #include "decNumber.h"		/* context and number library */
+    #include "libdecnumber/decNumber.h"
   #endif
 
   /* Decimal 128-bit type, accessible by bytes			      */

index 7a9f8ee..180e458 100644
@@ -57,7 +57,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
     #define DECNUMDIGITS DECIMAL64_Pmax /* size if not already defined*/
   #endif
   #ifndef DECNUMBER
-    #include "decNumber.h"		/* context and number library */
+    #include "libdecnumber/decNumber.h"
   #endif
 
   /* Decimal 64-bit type, accessible by bytes			      */

index c68101b..a8b3483 100644
@@ -32,9 +32,9 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 
 #include <string.h>	      /* for strcmp */
 #include <stdio.h>	      /* for printf if DECCHECK */
-#include "dconfig.h"	      /* for GCC definitions */
-#include "decContext.h"	      /* context and base types */
-#include "decNumberLocal.h"   /* decNumber local types, etc. */
+#include "libdecnumber/dconfig.h"
+#include "libdecnumber/decContext.h"
+#include "libdecnumber/decNumberLocal.h"
 
 #if DECCHECK
 /* compile-time endian tester [assumes sizeof(Int)>1] */

index ba57163..c0429e5 100644
@@ -165,9 +165,9 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #include <stdio.h>		   /* for printf [if needed] */
 #include <string.h>		   /* for strcpy */
 #include <ctype.h>		   /* for lower */
-#include "dconfig.h"		   /* for GCC definitions */
-#include "decNumber.h"		   /* base number library */
-#include "decNumberLocal.h"	   /* decNumber local types, etc. */
+#include "libdecnumber/dconfig.h"
+#include "libdecnumber/decNumber.h"
+#include "libdecnumber/decNumberLocal.h"
 
 /* Constants */
 /* Public lookup table used by the D2U macro */

index 9fb2b3e..c0f5786 100644
@@ -37,11 +37,11 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #include <string.h>	      /* [for memset/memcpy] */
 #include <stdio.h>	      /* [for printf] */
 
-#include "dconfig.h"	      /* GCC definitions */
+#include "libdecnumber/dconfig.h"
 #define	 DECNUMDIGITS 34      /* make decNumbers with space for 34 */
-#include "decNumber.h"	      /* base number library */
-#include "decNumberLocal.h"   /* decNumber local types, etc. */
-#include "decimal128.h"	      /* our primary include */
+#include "libdecnumber/decNumber.h"
+#include "libdecnumber/decNumberLocal.h"
+#include "libdecnumber/dpd/decimal128.h"
 
 /* Utility routines and tables [in decimal64.c] */
 extern const uInt   COMBEXP[32], COMBMSD[32];

index 1456133..53386ab 100644
@@ -37,11 +37,11 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 #include <string.h>	      /* [for memset/memcpy] */
 #include <stdio.h>	      /* [for printf] */
 
-#include "dconfig.h"	      /* GCC definitions */
+#include "libdecnumber/dconfig.h"
 #define	 DECNUMDIGITS 16      /* make decNumbers with space for 16 */
-#include "decNumber.h"	      /* base number library */
-#include "decNumberLocal.h"   /* decNumber local types, etc. */
-#include "decimal64.h"	      /* our primary include */
+#include "libdecnumber/decNumber.h"
+#include "libdecnumber/decNumberLocal.h"
+#include "libdecnumber/dpd/decimal64.h"
 
 /* Utility routines and tables [in decimal64.c]; externs for C++ */
 extern const uInt COMBEXP[32], COMBMSD[32];

@@ -65,7 +65,7 @@ extern void decNumberShow(const decNumber *);	  /* .. */
 #define DEC_BIN2CHAR 1
 #define DEC_DPD2BIN  1
 #define DEC_BIN2DPD  1		   /* used for all sizes */
-#include "decDPD.h"		   /* lookup tables */
+#include "libdecnumber/decDPD.h"
 
 /* ------------------------------------------------------------------ */
 /* decimal64FromNumber -- convert decNumber to decimal64	      */

@@ -554,7 +554,7 @@ void decimal64Show(const decimal64 *d64) {
 #else
   #define DEC_DPD2BCD 1
 #endif
-#include "decDPD.h"	      /* lookup tables */
+#include "libdecnumber/decDPD.h"
 
 /* The maximum number of decNumberUnits needed for a working copy of */
 /* the units array is the ceiling of digits/DECDPUN, where digits is */

index 91aa334..d4fed0d 100644
@@ -22,26 +22,14 @@ a copy of the GCC Runtime Library Exception along with this program;
 see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 <http://www.gnu.org/licenses/>.  */
 
-#ifdef IN_LIBGCC2
+#include "config-host.h"
 
-#include "tconfig.h"
-#include "coretypes.h"
-#include "tm.h"
-
-#ifndef LIBGCC2_WORDS_BIG_ENDIAN
-#define LIBGCC2_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
-#endif
-
-#ifndef LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
-#define LIBGCC2_FLOAT_WORDS_BIG_ENDIAN LIBGCC2_WORDS_BIG_ENDIAN
-#endif
-
-#if LIBGCC2_FLOAT_WORDS_BIG_ENDIAN
+#if defined(HOST_WORDS_BIGENDIAN)
 #define WORDS_BIGENDIAN 1
-#endif
-
 #else
+#define WORDS_BIGENDIAN 0
+#endif
 
-#include "config.h"
-
+#ifndef DECDPUN
+#define DECDPUN 3
 #endif

index 2e8f2e1..ffed769 100644
@@ -51,7 +51,7 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
   #define DECCFULLNAME "Decimal Context Descriptor"   /* Verbose name */
   #define DECCAUTHOR   "Mike Cowlishaw"		      /* Who to blame */
 
-  #include "gstdint.h"		   /* C99 standard integers	      */
+  #include <stdint.h>		   /* C99 standard integers	      */
   #include <stdio.h>		   /* for printf, etc.		      */
   #include <signal.h>		   /* for traps			      */
 

index c0f5786..3183612 100644
@@ -45,8 +45,6 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 
 /* Utility routines and tables [in decimal64.c] */
 extern const uInt   COMBEXP[32], COMBMSD[32];
-extern const uShort DPD2BIN[1024];
-extern const uShort BIN2DPD[1000];	/* [not used] */
 extern const uByte  BIN2CHAR[4001];
 
 extern void decDigitsFromDPD(decNumber *, const uInt *, Int);

index 53386ab..ccd7f6b 100644
@@ -45,8 +45,6 @@ see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
 
 /* Utility routines and tables [in decimal64.c]; externs for C++ */
 extern const uInt COMBEXP[32], COMBMSD[32];
-extern const uShort DPD2BIN[1024];
-extern const uShort BIN2DPD[1000];
 extern const uByte  BIN2CHAR[4001];
 
 extern void decDigitsFromDPD(decNumber *, const uInt *, Int);

index c0429e5..f60837b 100644
@@ -7398,7 +7398,6 @@ static void decSetMaxValue(decNumber *dn, decContext *set) {
 /* ------------------------------------------------------------------ */
 static void decSetSubnormal(decNumber *dn, decContext *set, Int *residue,
 			    uInt *status) {
-  Int	     dnexp;	      /* saves original exponent */
   decContext workset;	      /* work */
   Int	     etiny, adjust;   /* .. */
 

@@ -7443,7 +7442,6 @@ static void decSetSubnormal(decNumber *dn, decContext *set, Int *residue,
 
   /* adjust>0, so need to rescale the result so exponent becomes Etiny */
   /* [this code is similar to that in rescale] */
-  dnexp=dn->exponent;			/* save exponent */
   workset=*set;				/* clone rounding, etc. */
   workset.digits=dn->digits-adjust;	/* set requested length */
   workset.emin-=adjust;			/* and adjust emin to match */

index 99f10de..1bebc8e 100644
@@ -614,4 +614,8 @@ DEF_HELPER_3(store_601_batl, void, env, i32, tl)
 DEF_HELPER_3(store_601_batu, void, env, i32, tl)
 #endif
 
+#define dh_alias_fprp ptr
+#define dh_ctype_fprp uint64_t *
+#define dh_is_signed_fprp dh_is_signed_ptr
+
 #include "exec/def-helper.h"

index 91c33dc..26bfebc 100644
@@ -8180,6 +8180,58 @@ static void gen_xxsldwi(DisasContext *ctx)
     tcg_temp_free_i64(xtl);
 }
 
+/*** Decimal Floating Point ***/
+
+static inline TCGv_ptr gen_fprp_ptr(int reg)
+{
+    TCGv_ptr r = tcg_temp_new_ptr();
+    tcg_gen_addi_ptr(r, cpu_env, offsetof(CPUPPCState, fpr[reg]));
+    return r;
+}
+
+#if defined(TARGET_PPC64)
+static void gen_set_cr6_from_fpscr(DisasContext *ctx)
+{
+    TCGv_i32 tmp = tcg_temp_new_i32();
+    tcg_gen_trunc_tl_i32(tmp, cpu_fpscr);
+    tcg_gen_shri_i32(cpu_crf[1], tmp, 28);
+    tcg_temp_free_i32(tmp);
+}
+#else
+static void gen_set_cr6_from_fpscr(DisasContext *ctx)
+{
+        tcg_gen_shri_tl(cpu_crf[1], cpu_fpscr, 28);
+}
+#endif
+
+#define _GEN_DFP_TAB(name, op1, op2)             \
+static void gen_##name(DisasContext *ctx)        \
+{                                                \
+    TCGv_ptr rd, ra, rb;                         \
+    if (unlikely(!ctx->fpu_enabled)) {           \
+        gen_exception(ctx, POWERPC_EXCP_FPU);    \
+        return;                                  \
+    }                                            \
+    gen_update_nip(ctx, ctx->nip - 4);           \
+    rd = gen_fprp_ptr(rD(ctx->opcode));          \
+    ra = gen_fprp_ptr(rA(ctx->opcode));          \
+    rb = gen_fprp_ptr(rB(ctx->opcode));          \
+    gen_helper_##name(cpu_env, rd, ra, rb);      \
+    if (unlikely(Rc(ctx->opcode) != 0)) {        \
+        gen_set_cr6_from_fpscr(ctx);             \
+    }                                            \
+    tcg_temp_free_ptr(rd);                       \
+    tcg_temp_free_ptr(ra);                       \
+    tcg_temp_free_ptr(rb);                       \
+}
+
+#define GEN_DFP_TAB(name, op1, op2) \
+    _GEN_DFP_TAB(name, op1, op2)    \
+    _GEN_DFP_TAB(name##q, op1, op2)
+
+/* Avoid 'defined but not used' warnings ... this will be removed in */
+/* a subsequent patch. */
+void *_TempCr6_[] = { (void *)gen_set_cr6_from_fpscr, };
 
 /***                           SPE extension                               ***/
 /* Register moves */

@@ -10999,6 +11051,17 @@ GEN_XXSEL_ROW(0x1F)
 
 GEN_XX3FORM_DM(xxpermdi, 0x08, 0x01),
 
+#undef _GEN_DFP_TAB
+#undef GEN_DFP_TAB
+#define GEN_DFP_TAB_LONG(name, op1, op2) \
+    GEN_HANDLER_E(name, 0x3B, op1, op2, 0, PPC_NONE, PPC2_DFP)
+
+#define GEN_DFP_TAB_QUAD(name, op1, op2) \
+    GEN_HANDLER_E(name, 0x3F, op1, op2, 0x00210800, PPC_NONE, PPC2_DFP)
+
+#define GEN_DFP_TAB(name, op1, op2) \
+GEN_DFP_TAB_LONG(name, op1, op2),    \
+GEN_DFP_TAB_QUAD(name##q, op1, op2),
 #undef GEN_SPE
 #define GEN_SPE(name0, name1, opc2, opc3, inval0, inval1, type) \
     GEN_OPCODE_DUAL(name0##_##name1, 0x04, opc2, opc3, inval0, inval1, type, PPC_NONE)

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index 3c5988a..a3381ef 100644
@@ -103,9 +103,149 @@ static void ppc_dfp_prepare_decimal128_fra_frb(struct PPC_DFP *dfp, uint64_t *a,
     decimal128ToNumber((decimal128 *)dfp->b64, &dfp->b);
 }
 
+#define FP_FX       (1ull << FPSCR_FX)
+#define FP_FEX      (1ull << FPSCR_FEX)
+#define FP_OX       (1ull << FPSCR_OX)
+#define FP_OE       (1ull << FPSCR_OE)
+#define FP_UX       (1ull << FPSCR_UX)
+#define FP_UE       (1ull << FPSCR_UE)
+#define FP_XX       (1ull << FPSCR_XX)
+#define FP_XE       (1ull << FPSCR_XE)
+#define FP_VX       (1ull << FPSCR_VX)
+#define FP_VXSNAN   (1ull << FPSCR_VXSNAN)
+#define FP_VXISI    (1ull << FPSCR_VXISI)
+#define FP_VE       (1ull << FPSCR_VE)
+#define FP_FI       (1ull << FPSCR_FI)
+
+static void ppc_dfp_set_FPSCR_flag(struct PPC_DFP *dfp, uint64_t flag,
+                uint64_t enabled)
+{
+    dfp->env->fpscr |= (flag | FP_FX);
+    if (dfp->env->fpscr & enabled) {
+        dfp->env->fpscr |= FP_FEX;
+    }
+}
+
+typedef void (*PPC_DFP_PostProc)(struct PPC_DFP *);
+
+static void ppc_dfp_set_FPRF_from_FRT_with_context(struct PPC_DFP *dfp,
+                decContext *context)
+{
+    uint64_t fprf = 0;
+
+    /* construct FPRF */
+    switch (decNumberClass(&dfp->t, context)) {
+    case DEC_CLASS_SNAN:
+        fprf = 0x01;
+        break;
+    case DEC_CLASS_QNAN:
+        fprf = 0x11;
+        break;
+    case DEC_CLASS_NEG_INF:
+        fprf = 0x09;
+        break;
+    case DEC_CLASS_NEG_NORMAL:
+        fprf = 0x08;
+        break;
+    case DEC_CLASS_NEG_SUBNORMAL:
+        fprf = 0x18;
+        break;
+    case DEC_CLASS_NEG_ZERO:
+        fprf = 0x12;
+        break;
+    case DEC_CLASS_POS_ZERO:
+        fprf = 0x02;
+        break;
+    case DEC_CLASS_POS_SUBNORMAL:
+        fprf = 0x14;
+        break;
+    case DEC_CLASS_POS_NORMAL:
+        fprf = 0x04;
+        break;
+    case DEC_CLASS_POS_INF:
+        fprf = 0x05;
+        break;
+    default:
+        assert(0); /* should never get here */
+    }
+    dfp->env->fpscr &= ~(0x1F << 12);
+    dfp->env->fpscr |= (fprf << 12);
+}
+
+static void ppc_dfp_set_FPRF_from_FRT(struct PPC_DFP *dfp)
+{
+    ppc_dfp_set_FPRF_from_FRT_with_context(dfp, &dfp->context);
+}
+
+static void ppc_dfp_check_for_OX(struct PPC_DFP *dfp)
+{
+    if (dfp->context.status & DEC_Overflow) {
+        ppc_dfp_set_FPSCR_flag(dfp, FP_OX, FP_OE);
+    }
+}
+
+static void ppc_dfp_check_for_UX(struct PPC_DFP *dfp)
+{
+    if (dfp->context.status & DEC_Underflow) {
+        ppc_dfp_set_FPSCR_flag(dfp, FP_UX, FP_UE);
+    }
+}
+
+static void ppc_dfp_check_for_XX(struct PPC_DFP *dfp)
+{
+    if (dfp->context.status & DEC_Inexact) {
+        ppc_dfp_set_FPSCR_flag(dfp, FP_XX | FP_FI, FP_XE);
+    }
+}
+
+static void ppc_dfp_check_for_VXSNAN(struct PPC_DFP *dfp)
+{
+    if (dfp->context.status & DEC_Invalid_operation) {
+        if (decNumberIsSNaN(&dfp->a) || decNumberIsSNaN(&dfp->b)) {
+            ppc_dfp_set_FPSCR_flag(dfp, FP_VX | FP_VXSNAN, FP_VE);
+        }
+    }
+}
+
+static void ppc_dfp_check_for_VXISI(struct PPC_DFP *dfp, int testForSameSign)
+{
+    if (dfp->context.status & DEC_Invalid_operation) {
+        if (decNumberIsInfinite(&dfp->a) && decNumberIsInfinite(&dfp->b)) {
+            int same = decNumberClass(&dfp->a, &dfp->context) ==
+                       decNumberClass(&dfp->b, &dfp->context);
+            if ((same && testForSameSign) || (!same && !testForSameSign)) {
+                ppc_dfp_set_FPSCR_flag(dfp, FP_VX | FP_VXISI, FP_VE);
+            }
+        }
+    }
+}
+
+static void ppc_dfp_check_for_VXISI_add(struct PPC_DFP *dfp)
+{
+    ppc_dfp_check_for_VXISI(dfp, 0);
+}
+
+static void ppc_dfp_run_post_processors(struct PPC_DFP *dfp,
+                PPC_DFP_PostProc post_processors[], const size_t n)
+{
+    int i;
+
+    for (i = 0; i < n; i++) {
+        post_processors[i](dfp);
+    }
+}
+
+
 void *_TmpAvoidDefinedButNotUsedWarnings_[] = {
     (void *)ppc_dfp_prepare_decimal64_fra_frb,
     (void *)ppc_dfp_prepare_decimal128_fra_frb,
+    (void *)ppc_dfp_run_post_processors,
+    (void *)ppc_dfp_set_FPRF_from_FRT,
+    (void *)ppc_dfp_check_for_OX,
+    (void *)ppc_dfp_check_for_UX,
+    (void *)ppc_dfp_check_for_XX,
+    (void *)ppc_dfp_check_for_VXSNAN,
+    (void *)ppc_dfp_check_for_VXISI_add,
 };
 
 

index a3381ef..46a83e4 100644
@@ -235,17 +235,30 @@ static void ppc_dfp_run_post_processors(struct PPC_DFP *dfp,
     }
 }
 
+#define DFP_HELPER_TAB(op, dnop, postprocs, size)                              \
+void helper_##op(CPUPPCState *env, uint64_t *t, uint64_t *a, uint64_t *b)      \
+{                                                                              \
+    struct PPC_DFP dfp;                                                        \
+    ppc_dfp_prepare_decimal##size##_fra_frb(&dfp, a, b, env);                  \
+    dnop(&dfp.t, &dfp.a, &dfp.b, &dfp.context);                                \
+    decimal##size##FromNumber((decimal##size *)dfp.t64, &dfp.t, &dfp.context); \
+    ppc_dfp_run_post_processors(&dfp, postprocs, ARRAY_SIZE(postprocs));       \
+    if (size == 64) {                                                          \
+        t[0] = dfp.t64[0];                                                     \
+    } else if (size == 128) {                                                  \
+        t[0] = dfp.t64[HI_IDX];                                                \
+        t[1] = dfp.t64[LO_IDX];                                                \
+    }                                                                          \
+}
 
-void *_TmpAvoidDefinedButNotUsedWarnings_[] = {
-    (void *)ppc_dfp_prepare_decimal64_fra_frb,
-    (void *)ppc_dfp_prepare_decimal128_fra_frb,
-    (void *)ppc_dfp_run_post_processors,
-    (void *)ppc_dfp_set_FPRF_from_FRT,
-    (void *)ppc_dfp_check_for_OX,
-    (void *)ppc_dfp_check_for_UX,
-    (void *)ppc_dfp_check_for_XX,
-    (void *)ppc_dfp_check_for_VXSNAN,
-    (void *)ppc_dfp_check_for_VXISI_add,
+PPC_DFP_PostProc ADD_PPs[] = {
+    ppc_dfp_set_FPRF_from_FRT,
+    ppc_dfp_check_for_OX,
+    ppc_dfp_check_for_UX,
+    ppc_dfp_check_for_XX,
+    ppc_dfp_check_for_VXSNAN,
+    ppc_dfp_check_for_VXISI_add,
 };
 
-
+DFP_HELPER_TAB(dadd, decNumberAdd, ADD_PPs, 64)
+DFP_HELPER_TAB(daddq, decNumberAdd, ADD_PPs, 128)

index 1bebc8e..6054554 100644
@@ -618,4 +618,7 @@ DEF_HELPER_3(store_601_batu, void, env, i32, tl)
 #define dh_ctype_fprp uint64_t *
 #define dh_is_signed_fprp dh_is_signed_ptr
 
+DEF_HELPER_4(dadd, void, env, fprp, fprp, fprp)
+DEF_HELPER_4(daddq, void, env, fprp, fprp, fprp)
+
 #include "exec/def-helper.h"

index 26bfebc..de9ddb6 100644
@@ -8229,9 +8229,8 @@ static void gen_##name(DisasContext *ctx)        \
     _GEN_DFP_TAB(name, op1, op2)    \
     _GEN_DFP_TAB(name##q, op1, op2)
 
-/* Avoid 'defined but not used' warnings ... this will be removed in */
-/* a subsequent patch. */
-void *_TempCr6_[] = { (void *)gen_set_cr6_from_fpscr, };
+GEN_DFP_TAB(dadd, 0x02, 0x00)
+
 
 /***                           SPE extension                               ***/
 /* Register moves */

@@ -11062,6 +11061,9 @@ GEN_XX3FORM_DM(xxpermdi, 0x08, 0x01),
 #define GEN_DFP_TAB(name, op1, op2) \
 GEN_DFP_TAB_LONG(name, op1, op2),    \
 GEN_DFP_TAB_QUAD(name##q, op1, op2),
+
+GEN_DFP_TAB(dadd, 0x02, 0x00)
+
 #undef GEN_SPE
 #define GEN_SPE(name0, name1, opc2, opc3, inval0, inval1, type) \
     GEN_OPCODE_DUAL(name0##_##name1, 0x04, opc2, opc3, inval0, inval1, type, PPC_NONE)