Patchwork Merge score7 to score.c and remove forwarding functions.

login
register
mail settings
Submitter Wei Qin
Date June 9, 2011, 9:28 a.m.
Message ID <BANLkTikQwfbPNA-V8OGUFcTgObOQfHFfVA@mail.gmail.com>
Download mbox | patch
Permalink /patch/99711/
State New
Headers show

Comments

Wei Qin - June 9, 2011, 9:28 a.m.
Merge score7 to score.c and remove forwarding functions.
Delete score7.c and score7.h.

2011-06-08  Wei Qin<wei.gcc@gmail.com>

        * config.gcc (score-*-elf): Remove score7.o.
        * config/score/t-score-elf: Likewise.
        * config/score/score.c: Merge score7 to score.c and remove
forwarding functions.
        * config/score/score7.c Deleted.
        * config/score/score7.h Deleted.
Joseph S. Myers - June 9, 2011, 9:57 a.m.
You didn't test this, did you?  Since it reverts my fixes to 
score_handle_option to avoid global state and it's hardly going to build 
cleanly with the old prototype for a hook that has changed prototype.

Patch

Index: gcc/ChangeLog
===================================================================
--- gcc/ChangeLog	(revision 174796)
+++ gcc/ChangeLog	(working copy)
@@ -1,3 +1,11 @@ 
+2011-06-08  Wei Qin<wei.gcc@gmail.com>
+
+	* config.gcc (score-*-elf): Remove score7.o.
+	* config/score/t-score-elf: Likewise.
+	* config/score/score.c: Merge score7 to score.c and remove forwarding functions.
+	* config/score/score7.c Deleted.
+	* config/score/score7.h Deleted.
+
 2011-06-08  Kaz Kojima  <kkojima@gcc.gnu.org>
 
 	* config/sh/sh.c (prepare_move_operands): Set pic register
Index: gcc/config.gcc
===================================================================
--- gcc/config.gcc	(revision 174796)
+++ gcc/config.gcc	(working copy)
@@ -2233,7 +2233,6 @@ 
         tm_file="dbxelf.h elfos.h score/elf.h score/score.h newlib-stdint.h"
 	extra_parts="crti.o crtn.o crtbegin.o crtend.o"
         tmake_file="${tmake_file} score/t-score-elf score/t-score-softfp soft-fp/t-softfp"
-        extra_objs="score7.o"
         ;;
 sh-*-elf* | sh[12346l]*-*-elf* | \
   sh-*-linux* | sh[2346lbe]*-*-linux* | \
Index: gcc/config/score/t-score-elf
===================================================================
--- gcc/config/score/t-score-elf	(revision 174796)
+++ gcc/config/score/t-score-elf	(working copy)
@@ -16,13 +16,6 @@ 
 # along with GCC; see the file COPYING3.  If not see
 # <http://www.gnu.org/licenses/>.
 
-# Additional Backend Files
-score7.o: $(srcdir)/config/score/score7.c $(CONFIG_H) $(SYSTEM_H) \
-  coretypes.h $(TM_H) $(RTL_H) output.h flags.h $(TREE_H) \
-  expr.h toplev.h $(TM_P_H)
-	$(COMPILER) -c $(ALL_COMPILERFLAGS) $(ALL_CPPFLAGS) $(INCLUDES) \
-	$(srcdir)/config/score/score7.c
-
 # Assemble startup files.
 $(T)crti.o: $(srcdir)/config/score/crti.asm $(GCC_PASSES)
 	$(GCC_FOR_TARGET) $(GCC_CFLAGS) $(MULTILIB_CFLAGS) $(INCLUDES) \
Index: gcc/config/score/score.c
===================================================================
--- gcc/config/score/score.c	(revision 174796)
+++ gcc/config/score/score.c	(working copy)
@@ -1,6 +1,5 @@ 
 /* Output routines for Sunplus S+CORE processor
-   Copyright (C) 2005, 2007, 2008, 2009, 2010, 2011
-   Free Software Foundation, Inc.
+   Copyright (C) 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
    Contributed by Sunnorth.
 
    This file is part of GCC.
@@ -47,19 +46,102 @@ 
 #include "target-def.h"
 #include "integrate.h"
 #include "langhooks.h"
-#include "score7.h"
 #include "df.h"
-#include "opts.h"
 
-static void score_option_override (void);
+#define SCORE_SDATA_MAX                score_sdata_max
+#define SCORE_STACK_ALIGN(LOC)         (((LOC) + 3) & ~3)
+#define SCORE_PROLOGUE_TEMP_REGNUM     (GP_REG_FIRST + 8)
+#define SCORE_EPILOGUE_TEMP_REGNUM     (GP_REG_FIRST + 8)
+#define SCORE_DEFAULT_SDATA_MAX        8
 
+#define BITSET_P(VALUE, BIT)           (((VALUE) & (1L << (BIT))) != 0)
+#define INS_BUF_SZ                     128
+
+enum score_address_type
+{
+  SCORE_ADD_REG,
+  SCORE_ADD_CONST_INT,
+  SCORE_ADD_SYMBOLIC
+};
+
+struct score_frame_info
+{
+  HOST_WIDE_INT total_size;       /* bytes that the entire frame takes up  */
+  HOST_WIDE_INT var_size;         /* bytes that variables take up  */
+  HOST_WIDE_INT args_size;        /* bytes that outgoing arguments take up  */
+  HOST_WIDE_INT gp_reg_size;      /* bytes needed to store gp regs  */
+  HOST_WIDE_INT gp_sp_offset;     /* offset from new sp to store gp registers  */
+  HOST_WIDE_INT cprestore_size;   /* # bytes that the .cprestore slot takes up  */
+  unsigned int  mask;             /* mask of saved gp registers  */
+  int num_gp;                     /* number of gp registers saved  */
+};
+
+struct score_arg_info
+{
+  unsigned int num_bytes;     /* The argument's size in bytes  */
+  unsigned int reg_words;     /* The number of words passed in registers  */
+  unsigned int reg_offset;    /* The offset of the first register from  */
+                              /* GP_ARG_FIRST or FP_ARG_FIRST etc  */
+  unsigned int stack_words;   /* The number of words that must be passed  */
+                              /* on the stack  */
+  unsigned int stack_offset;  /* The offset from the start of the stack  */
+                              /* overflow area  */
+};
+
+#ifdef RTX_CODE
+struct score_address_info
+{
+  enum score_address_type type;
+  rtx reg;
+  rtx offset;
+  enum rtx_code code;
+  enum score_symbol_type symbol_type;
+};
+#endif
+
+static int score_sdata_max;
+static char score_ins[INS_BUF_SZ + 8];
+
 /* Implement TARGET_OPTION_OPTIMIZATION_TABLE.  */
 static const struct default_options score_option_optimization_table[] =
-  {
+{
     { OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
     { OPT_LEVELS_NONE, 0, NULL, 0 }
-  };
+};
 
+struct extern_list *extern_head = 0;
+
+static bool score_return_in_memory (const_tree type, 
+                                    const_tree fndecl ATTRIBUTE_UNUSED);
+static void score_output_mi_thunk (FILE *file,
+                                   tree thunk_fndecl ATTRIBUTE_UNUSED,
+                                   HOST_WIDE_INT delta,
+                                   HOST_WIDE_INT vcall_offset,
+                                   tree function);
+static rtx score_legitimize_address (rtx x);
+static void score_function_prologue (FILE *file, 
+                                     HOST_WIDE_INT size ATTRIBUTE_UNUSED);
+static void score_function_epilogue (FILE *file, 
+                                     HOST_WIDE_INT size ATTRIBUTE_UNUSED);
+static section *score_select_rtx_section (enum machine_mode mode, rtx x,
+                                          unsigned HOST_WIDE_INT align);
+static bool score_in_small_data_p (const_tree decl);
+static void score_asm_file_end (void);
+static void score_function_arg_advance (CUMULATIVE_ARGS *cum,
+                                        enum machine_mode mode,
+                                        const_tree type,
+                                        bool named);
+static rtx score_function_arg (const CUMULATIVE_ARGS *cum,
+                               enum machine_mode mode,
+                               const_tree type,
+                               bool named);
+static void score_asm_trampoline_template (FILE *);
+static void score_trampoline_init (rtx, tree, rtx);
+static bool score_legitimate_address_p (enum machine_mode mode, 
+                                        rtx x, 
+                                        bool strict);
+static void score_option_override (void);
+
 #undef  TARGET_ASM_FILE_START
 #define TARGET_ASM_FILE_START           score_asm_file_start
 
@@ -149,31 +231,261 @@ 
 #undef TARGET_TRAMPOLINE_INIT
 #define TARGET_TRAMPOLINE_INIT		score_trampoline_init
 
-struct extern_list *extern_head = 0;
+/* Return true if SYMBOL is a SYMBOL_REF and OFFSET + SYMBOL points
+   to the same object as SYMBOL.  */
+static int
+score_offset_within_object_p (rtx symbol, HOST_WIDE_INT offset)
+{
+  if (GET_CODE (symbol) != SYMBOL_REF)
+    return 0;
 
-/* default 0 = NO_REGS  */
-enum reg_class score_char_to_class[256];
+  if (CONSTANT_POOL_ADDRESS_P (symbol)
+      && offset >= 0
+      && offset < (int)GET_MODE_SIZE (get_pool_mode (symbol)))
+    return 1;
 
+  if (SYMBOL_REF_DECL (symbol) != 0
+      && offset >= 0
+      && offset < int_size_in_bytes (TREE_TYPE (SYMBOL_REF_DECL (symbol))))
+    return 1;
+
+  return 0;
+}
+
+/* Split X into a base and a constant offset, storing them in *BASE
+   and *OFFSET respectively.  */
+static void
+score_split_const (rtx x, rtx *base, HOST_WIDE_INT *offset)
+{
+  *offset = 0;
+
+  if (GET_CODE (x) == CONST)
+    x = XEXP (x, 0);
+
+  if (GET_CODE (x) == PLUS && GET_CODE (XEXP (x, 1)) == CONST_INT)
+    {
+      *offset += INTVAL (XEXP (x, 1));
+      x = XEXP (x, 0);
+    }
+
+  *base = x;
+}
+
+/* Classify symbol X, which must be a SYMBOL_REF or a LABEL_REF.  */
+static enum score_symbol_type
+score_classify_symbol (rtx x)
+{
+  if (GET_CODE (x) == LABEL_REF)
+    return SYMBOL_GENERAL;
+
+  gcc_assert (GET_CODE (x) == SYMBOL_REF);
+
+  if (CONSTANT_POOL_ADDRESS_P (x))
+    {
+      if (GET_MODE_SIZE (get_pool_mode (x)) <= SCORE_SDATA_MAX)
+        return SYMBOL_SMALL_DATA;
+      return SYMBOL_GENERAL;
+    }
+  if (SYMBOL_REF_SMALL_P (x))
+    return SYMBOL_SMALL_DATA;
+  return SYMBOL_GENERAL;
+}
+
+/* Return true if the current function must save REGNO.  */
+static int
+score_save_reg_p (unsigned int regno)
+{
+  /* Check call-saved registers.  */
+  if (df_regs_ever_live_p (regno) && !call_used_regs[regno])
+    return 1;
+
+  /* We need to save the old frame pointer before setting up a new one.  */
+  if (regno == HARD_FRAME_POINTER_REGNUM && frame_pointer_needed)
+    return 1;
+
+  /* We need to save the incoming return address if it is ever clobbered
+     within the function.  */
+  if (regno == RA_REGNUM && df_regs_ever_live_p (regno))
+    return 1;
+
+  return 0;
+}
+
+/* Return one word of double-word value OP, taking into account the fixed
+   endianness of certain registers.  HIGH_P is true to select the high part,
+   false to select the low part.  */
+static rtx
+score_subw (rtx op, int high_p)
+{
+  unsigned int byte;
+  enum machine_mode mode = GET_MODE (op);
+
+  if (mode == VOIDmode)
+    mode = DImode;
+
+  byte = (TARGET_LITTLE_ENDIAN ? high_p : !high_p) ? UNITS_PER_WORD : 0;
+
+  if (GET_CODE (op) == REG && REGNO (op) == HI_REGNUM)
+    return gen_rtx_REG (SImode, high_p ? HI_REGNUM : LO_REGNUM);
+
+  if (GET_CODE (op) == MEM)
+    return adjust_address (op, SImode, byte);
+
+  return simplify_gen_subreg (SImode, op, mode, byte);
+}
+
+static struct score_frame_info *
+score_cached_frame (void)
+{
+  static struct score_frame_info _frame_info;
+  return &_frame_info;
+}
+
+/* Return the bytes needed to compute the frame pointer from the current
+   stack pointer.  SIZE is the size (in bytes) of the local variables.  */
+static struct score_frame_info *
+score_compute_frame_size (HOST_WIDE_INT size)
+{
+  unsigned int regno;
+  struct score_frame_info *f = score_cached_frame ();
+
+  memset (f, 0, sizeof (struct score_frame_info));
+  f->gp_reg_size = 0;
+  f->mask = 0;
+  f->var_size = SCORE_STACK_ALIGN (size);
+  f->args_size = crtl->outgoing_args_size;
+  f->cprestore_size = flag_pic ? UNITS_PER_WORD : 0;
+  if (f->var_size == 0 && current_function_is_leaf)
+    f->args_size = f->cprestore_size = 0;
+
+  if (f->args_size == 0 && cfun->calls_alloca)
+    f->args_size = UNITS_PER_WORD;
+
+  f->total_size = f->var_size + f->args_size + f->cprestore_size;
+  for (regno = GP_REG_FIRST; regno <= GP_REG_LAST; regno++)
+    {
+      if (score_save_reg_p (regno))
+        {
+          f->gp_reg_size += GET_MODE_SIZE (SImode);
+          f->mask |= 1 << (regno - GP_REG_FIRST);
+        }
+    }
+
+  if (crtl->calls_eh_return)
+    {
+      unsigned int i;
+      for (i = 0;; ++i)
+        {
+          regno = EH_RETURN_DATA_REGNO (i);
+          if (regno == INVALID_REGNUM)
+            break;
+          f->gp_reg_size += GET_MODE_SIZE (SImode);
+          f->mask |= 1 << (regno - GP_REG_FIRST);
+        }
+    }
+
+  f->total_size += f->gp_reg_size;
+  f->num_gp = f->gp_reg_size / UNITS_PER_WORD;
+
+  if (f->mask)
+    {
+      HOST_WIDE_INT offset;
+      offset = (f->args_size + f->cprestore_size + f->var_size
+                + f->gp_reg_size - GET_MODE_SIZE (SImode));
+      f->gp_sp_offset = offset;
+    }
+  else
+    f->gp_sp_offset = 0;
+
+  return f;
+}
+
+/* Return true if X is a valid base register for the given mode.
+   Allow only hard registers if STRICT.  */
+static int
+score_valid_base_register_p (rtx x, int strict)
+{
+  if (!strict && GET_CODE (x) == SUBREG)
+    x = SUBREG_REG (x);
+
+  return (GET_CODE (x) == REG
+          && score_regno_mode_ok_for_base_p (REGNO (x), strict));
+}
+
+/* Return true if X is a valid address for machine mode MODE.  If it is,
+   fill in INFO appropriately.  STRICT is true if we should only accept
+   hard base registers.  */
+static int
+score_classify_address (struct score_address_info *info,
+                        enum machine_mode mode, rtx x, int strict)
+{
+  info->code = GET_CODE (x);
+
+  switch (info->code)
+    {
+    case REG:
+    case SUBREG:
+      info->type = SCORE_ADD_REG;
+      info->reg = x;
+      info->offset = const0_rtx;
+      return score_valid_base_register_p (info->reg, strict);
+    case PLUS:
+      info->type = SCORE_ADD_REG;
+      info->reg = XEXP (x, 0);
+      info->offset = XEXP (x, 1);
+      return (score_valid_base_register_p (info->reg, strict)
+              && GET_CODE (info->offset) == CONST_INT
+              && IMM_IN_RANGE (INTVAL (info->offset), 15, 1));
+    case PRE_DEC:
+    case POST_DEC:
+    case PRE_INC:
+    case POST_INC:
+      if (GET_MODE_SIZE (mode) > GET_MODE_SIZE (SImode))
+        return false;
+      info->type = SCORE_ADD_REG;
+      info->reg = XEXP (x, 0);
+      info->offset = GEN_INT (GET_MODE_SIZE (mode));
+      return score_valid_base_register_p (info->reg, strict);
+    case CONST_INT:
+      info->type = SCORE_ADD_CONST_INT;
+      return IMM_IN_RANGE (INTVAL (x), 15, 1);
+    case CONST:
+    case LABEL_REF:
+    case SYMBOL_REF:
+      info->type = SCORE_ADD_SYMBOLIC;
+      return (score_symbolic_constant_p (x, &info->symbol_type)
+              && (info->symbol_type == SYMBOL_GENERAL
+                  || info->symbol_type == SYMBOL_SMALL_DATA));
+    default:
+      return 0;
+    }
+}
+
 /* Implement TARGET_RETURN_IN_MEMORY.  In S+core,
    small structures are returned in a register.
    Objects with varying size must still be returned in memory.  */
 static bool
 score_return_in_memory (const_tree type, const_tree fndecl ATTRIBUTE_UNUSED)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_return_in_memory (type, fndecl);
-  else
-    gcc_unreachable ();
+    return ((TYPE_MODE (type) == BLKmode)
+            || (int_size_in_bytes (type) > 2 * UNITS_PER_WORD)
+            || (int_size_in_bytes (type) == -1));
 }
 
-/* Return nonzero when an argument must be passed by reference.  */
-static bool
-score_pass_by_reference (CUMULATIVE_ARGS *cum ATTRIBUTE_UNUSED,
-                         enum machine_mode mode, const_tree type,
-                         bool named ATTRIBUTE_UNUSED)
+/* Return a legitimate address for REG + OFFSET.  */
+static rtx
+score_add_offset (rtx reg, HOST_WIDE_INT offset)
 {
-  /* If we have a variable-sized parameter, we have no choice.  */
-  return targetm.calls.must_pass_in_stack (mode, type);
+  if (!IMM_IN_RANGE (offset, 15, 1))
+    {
+      reg = expand_simple_binop (GET_MODE (reg), PLUS,
+                                 gen_int_mode (offset & 0xffffc000,
+                                               GET_MODE (reg)),
+                                 reg, NULL, 0, OPTAB_WIDEN);
+      offset &= 0x3fff;
+    }
+
+  return plus_constant (reg, offset);
 }
 
 /* Implement TARGET_ASM_OUTPUT_MI_THUNK.  Generate rtl rather than asm text
@@ -183,89 +495,279 @@ 
                        HOST_WIDE_INT delta, HOST_WIDE_INT vcall_offset,
                        tree function)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_output_mi_thunk (file, thunk_fndecl, delta, vcall_offset, function);
+  rtx this_rtx, temp1, insn, fnaddr;
+
+  /* Pretend to be a post-reload pass while generating rtl.  */
+  reload_completed = 1;
+
+  /* Mark the end of the (empty) prologue.  */
+  emit_note (NOTE_INSN_PROLOGUE_END);
+
+  /* We need two temporary registers in some cases.  */
+  temp1 = gen_rtx_REG (Pmode, 8);
+
+  /* Find out which register contains the "this" pointer.  */
+  if (aggregate_value_p (TREE_TYPE (TREE_TYPE (function)), function))
+    this_rtx = gen_rtx_REG (Pmode, ARG_REG_FIRST + 1);
   else
-    gcc_unreachable ();
+    this_rtx = gen_rtx_REG (Pmode, ARG_REG_FIRST);
+
+  /* Add DELTA to THIS_RTX.  */
+  if (delta != 0)
+    {
+      rtx offset = GEN_INT (delta);
+      if (!(delta >= -32768 && delta <= 32767))
+        {
+          emit_move_insn (temp1, offset);
+          offset = temp1;
+        }
+      emit_insn (gen_add3_insn (this_rtx, this_rtx, offset));
+    }
+
+  /* If needed, add *(*THIS_RTX + VCALL_OFFSET) to THIS_RTX.  */
+  if (vcall_offset != 0)
+    {
+      rtx addr;
+
+      /* Set TEMP1 to *THIS_RTX.  */
+      emit_move_insn (temp1, gen_rtx_MEM (Pmode, this_rtx));
+
+      /* Set ADDR to a legitimate address for *THIS_RTX + VCALL_OFFSET.  */
+      addr = score_add_offset (temp1, vcall_offset);
+
+      /* Load the offset and add it to THIS_RTX.  */
+      emit_move_insn (temp1, gen_rtx_MEM (Pmode, addr));
+      emit_insn (gen_add3_insn (this_rtx, this_rtx, temp1));
+    }
+
+  /* Jump to the target function.  */
+  fnaddr = XEXP (DECL_RTL (function), 0);
+  insn = emit_call_insn (gen_sibcall_internal_score7 (fnaddr, const0_rtx));
+  SIBLING_CALL_P (insn) = 1;
+
+  /* Run just enough of rest_of_compilation.  This sequence was
+     "borrowed" from alpha.c.  */
+  insn = get_insns ();
+  insn_locators_alloc ();
+  split_all_insns_noflow ();
+  shorten_branches (insn);
+  final_start_function (insn, file, 1);
+  final (insn, file, 1);
+  final_end_function ();
+
+  /* Clean up the vars set above.  Note that final_end_function resets
+     the global pointer for us.  */
+  reload_completed = 0;
 }
 
-/* Implement TARGET_FUNCTION_OK_FOR_SIBCALL.  */
-static bool
-score_function_ok_for_sibcall (ATTRIBUTE_UNUSED tree decl,
-                               ATTRIBUTE_UNUSED tree exp)
+/* Copy VALUE to a register and return that register.  If new psuedos
+   are allowed, copy it into a new register, otherwise use DEST.  */
+static rtx
+score_force_temporary (rtx dest, rtx value)
 {
-  return true;
+  if (can_create_pseudo_p ())
+    return force_reg (Pmode, value);
+  else
+    {
+      emit_move_insn (copy_rtx (dest), value);
+      return dest;
+    }
 }
 
+/* Return a LO_SUM expression for ADDR.  TEMP is as for score_force_temporary
+   and is used to load the high part into a register.  */
+static rtx
+score_split_symbol (rtx temp, rtx addr)
+{
+  rtx high = score_force_temporary (temp,
+                                     gen_rtx_HIGH (Pmode, copy_rtx (addr)));
+  return gen_rtx_LO_SUM (Pmode, high, addr);
+}
+
+/* This function is used to implement LEGITIMIZE_ADDRESS.  If X can
+   be legitimized in a way that the generic machinery might not expect,
+   return the new address.  */
+static rtx
+score_legitimize_address (rtx x)
+{
+  enum score_symbol_type symbol_type;
+
+  if (score_symbolic_constant_p (x, &symbol_type)
+      && symbol_type == SYMBOL_GENERAL)
+    return score_split_symbol (0, x);
+
+  if (GET_CODE (x) == PLUS
+      && GET_CODE (XEXP (x, 1)) == CONST_INT)
+    {
+      rtx reg = XEXP (x, 0);
+      if (!score_valid_base_register_p (reg, 0))
+        reg = copy_to_mode_reg (Pmode, reg);
+      return score_add_offset (reg, INTVAL (XEXP (x, 1)));
+    }
+
+  return x;
+}
+
+/* Fill INFO with information about a single argument.  CUM is the
+   cumulative state for earlier arguments.  MODE is the mode of this
+   argument and TYPE is its type (if known).  NAMED is true if this
+   is a named (fixed) argument rather than a variable one.  */
+static void
+score_classify_arg (const CUMULATIVE_ARGS *cum, enum machine_mode mode,
+                    const_tree type, bool named, struct score_arg_info *info)
+{
+  int even_reg_p;
+  unsigned int num_words, max_regs;
+
+  even_reg_p = 0;
+  if (GET_MODE_CLASS (mode) == MODE_INT
+      || GET_MODE_CLASS (mode) == MODE_FLOAT)
+    even_reg_p = (GET_MODE_SIZE (mode) > UNITS_PER_WORD);
+  else
+    if (type != NULL_TREE && TYPE_ALIGN (type) > BITS_PER_WORD && named)
+      even_reg_p = 1;
+
+  if (TARGET_MUST_PASS_IN_STACK (mode, type))
+    info->reg_offset = ARG_REG_NUM;
+  else
+    {
+      info->reg_offset = cum->num_gprs;
+      if (even_reg_p)
+        info->reg_offset += info->reg_offset & 1;
+    }
+
+  if (mode == BLKmode)
+    info->num_bytes = int_size_in_bytes (type);
+  else
+    info->num_bytes = GET_MODE_SIZE (mode);
+
+  num_words = (info->num_bytes + UNITS_PER_WORD - 1) / UNITS_PER_WORD;
+  max_regs = ARG_REG_NUM - info->reg_offset;
+
+  /* Partition the argument between registers and stack.  */
+  info->reg_words = MIN (num_words, max_regs);
+  info->stack_words = num_words - info->reg_words;
+
+  /* The alignment applied to registers is also applied to stack arguments.  */
+  if (info->stack_words)
+    {
+      info->stack_offset = cum->stack_words;
+      if (even_reg_p)
+        info->stack_offset += info->stack_offset & 1;
+    }
+}
+
 /* Set up the stack and frame (if desired) for the function.  */
 static void
 score_function_prologue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_function_prologue (file, size);
-  else
-    gcc_unreachable ();
+  const char *fnname;
+  struct score_frame_info *f = score_cached_frame ();
+  HOST_WIDE_INT tsize = f->total_size;
+
+  fnname = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0);
+  if (!flag_inhibit_size_directive)
+    {
+      fputs ("\t.ent\t", file);
+      assemble_name (file, fnname);
+      fputs ("\n", file);
+    }
+  assemble_name (file, fnname);
+  fputs (":\n", file);
+
+  if (!flag_inhibit_size_directive)
+    {
+      fprintf (file,
+               "\t.frame\t%s," HOST_WIDE_INT_PRINT_DEC ",%s, %d\t\t"
+               "# vars= " HOST_WIDE_INT_PRINT_DEC ", regs= %d"
+               ", args= " HOST_WIDE_INT_PRINT_DEC
+               ", gp= " HOST_WIDE_INT_PRINT_DEC "\n",
+               (reg_names[(frame_pointer_needed)
+                ? HARD_FRAME_POINTER_REGNUM : STACK_POINTER_REGNUM]),
+               tsize,
+               reg_names[RA_REGNUM],
+               current_function_is_leaf ? 1 : 0,
+               f->var_size,
+               f->num_gp,
+               f->args_size,
+               f->cprestore_size);
+
+      fprintf(file, "\t.mask\t0x%08x," HOST_WIDE_INT_PRINT_DEC "\n",
+              f->mask,
+              (f->gp_sp_offset - f->total_size));
+    }
 }
 
 /* Do any necessary cleanup after a function to restore stack, frame,
    and regs.  */
 static void
-score_function_epilogue (FILE *file,
-                         HOST_WIDE_INT size ATTRIBUTE_UNUSED)
+score_function_epilogue (FILE *file, HOST_WIDE_INT size ATTRIBUTE_UNUSED)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_function_epilogue (file, size);
-  else
-    gcc_unreachable ();
+  if (!flag_inhibit_size_directive)
+    {
+      const char *fnname;
+      fnname = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0);
+      fputs ("\t.end\t", file);
+      assemble_name (file, fnname);
+      fputs ("\n", file);
+    }
 }
 
-/* Implement TARGET_SCHED_ISSUE_RATE.  */
-static int
-score_issue_rate (void)
+/* Returns true if X contains a SYMBOL_REF.  */
+static bool
+score_symbolic_expression_p (rtx x)
 {
-  return 1;
+  if (GET_CODE (x) == SYMBOL_REF)
+    return true;
+
+  if (GET_CODE (x) == CONST)
+    return score_symbolic_expression_p (XEXP (x, 0));
+
+  if (UNARY_P (x))
+    return score_symbolic_expression_p (XEXP (x, 0));
+
+  if (ARITHMETIC_P (x))
+    return (score_symbolic_expression_p (XEXP (x, 0))
+            || score_symbolic_expression_p (XEXP (x, 1)));
+
+  return false;
 }
 
 /* Choose the section to use for the constant rtx expression X that has
    mode MODE.  */
 static section *
-score_select_rtx_section (enum machine_mode mode, rtx x,
-                          unsigned HOST_WIDE_INT align)
+score_select_rtx_section (enum machine_mode mode, rtx x, unsigned HOST_WIDE_INT align)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_select_rtx_section (mode, x, align);
+  if (GET_MODE_SIZE (mode) <= SCORE_SDATA_MAX)
+    return get_named_section (0, ".sdata", 0);
+  else if (flag_pic && score_symbolic_expression_p (x))
+    return get_named_section (0, ".data.rel.ro", 3);
   else
-    gcc_unreachable ();
+    return mergeable_constant_section (mode, align, 0);
 }
 
 /* Implement TARGET_IN_SMALL_DATA_P.  */
 static bool
 score_in_small_data_p (const_tree decl)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_in_small_data_p (decl);
-  else
-    gcc_unreachable ();
-}
+  HOST_WIDE_INT size;
 
-/* Implement TARGET_ASM_FILE_START.  */
-static void
-score_asm_file_start (void)
-{
-  if (TARGET_SCORE7D)
-    fprintf (asm_out_file, "# Sunplus S+core7d %s rev=%s\n",
-             TARGET_LITTLE_ENDIAN ? "el" : "eb", SCORE_GCC_VERSION);
-  else if (TARGET_SCORE7)
-    fprintf (asm_out_file, "# Sunplus S+core7 %s rev=%s\n",
-             TARGET_LITTLE_ENDIAN ? "el" : "eb", SCORE_GCC_VERSION);
-  else
-    fprintf (asm_out_file, "# Sunplus S+core unknown %s rev=%s\n",
-             TARGET_LITTLE_ENDIAN ? "el" : "eb", SCORE_GCC_VERSION);
+  if (TREE_CODE (decl) == STRING_CST
+      || TREE_CODE (decl) == FUNCTION_DECL)
+    return false;
 
-  default_file_start ();
-
-  if (flag_pic)
-    fprintf (asm_out_file, "\t.set pic\n");
+  if (TREE_CODE (decl) == VAR_DECL && DECL_SECTION_NAME (decl) != 0)
+    {
+      const char *name;
+      name = TREE_STRING_POINTER (DECL_SECTION_NAME (decl));
+      if (strcmp (name, ".sdata") != 0
+          && strcmp (name, ".sbss") != 0)
+        return true;
+      if (!DECL_EXTERNAL (decl))
+        return false;
+    }
+  size = int_size_in_bytes (TREE_TYPE (decl));
+  return (size > 0 && size <= SCORE_SDATA_MAX);
 }
 
 /* Implement TARGET_ASM_FILE_END.  When using assembler macros, emit
@@ -273,38 +775,23 @@ 
 static void
 score_asm_file_end (void)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_asm_file_end ();
-  else
-    gcc_unreachable ();
-}
-
-#define MASK_ALL_CPU_BITS	(MASK_SCORE7 | MASK_SCORE7D)
-
-/* Implement TARGET_HANDLE_OPTION.  */
-static bool
-score_handle_option (struct gcc_options *opts,
-		     struct gcc_options *opts_set ATTRIBUTE_UNUSED,
-		     const struct cl_decoded_option *decoded,
-		     location_t loc ATTRIBUTE_UNUSED)
-{
-  size_t code = decoded->opt_index;
-  int value = decoded->value;
-
-  switch (code)
+  tree name_tree;
+  struct extern_list *p;
+  if (extern_head)
     {
-    case OPT_mscore7d:
-      opts->x_target_flags &= ~(MASK_ALL_CPU_BITS);
-      opts->x_target_flags |= MASK_SCORE7 | MASK_SCORE7D;
-      return true;
-
-    case OPT_march_:
-      opts->x_target_flags &= ~(MASK_ALL_CPU_BITS);
-      opts->x_target_flags |= value;
-      return true;
-
-    default:
-      return true;
+      fputs ("\n", asm_out_file);
+      for (p = extern_head; p != 0; p = p->next)
+        {
+          name_tree = get_identifier (p->name);
+          if (!TREE_ASM_WRITTEN (name_tree)
+              && TREE_SYMBOL_REFERENCED (name_tree))
+            {
+              TREE_ASM_WRITTEN (name_tree) = 1;
+              fputs ("\t.extern\t", asm_out_file);
+              assemble_name (asm_out_file, p->name);
+              fprintf (asm_out_file, ", %d\n", p->size);
+            }
+        }
     }
 }
 
@@ -312,28 +799,38 @@ 
 static void
 score_option_override (void)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_option_override ();
+  flag_pic = false;
+  score_sdata_max = SCORE_DEFAULT_SDATA_MAX;
+
 }
 
 /* Implement REGNO_REG_CLASS macro.  */
 int
 score_reg_class (int regno)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_reg_class (regno);
-  else
-    gcc_unreachable ();
+  int c;
+  gcc_assert (regno >= 0 && regno < FIRST_PSEUDO_REGISTER);
+
+  if (regno == FRAME_POINTER_REGNUM
+      || regno == ARG_POINTER_REGNUM)
+    return ALL_REGS;
+
+  for (c = 0; c < N_REG_CLASSES; c++)
+    if (TEST_HARD_REG_BIT (reg_class_contents[c], regno))
+      return c;
+
+  return NO_REGS;
 }
 
 /* Implement PREFERRED_RELOAD_CLASS macro.  */
 enum reg_class
 score_preferred_reload_class (rtx x ATTRIBUTE_UNUSED, enum reg_class rclass)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_preferred_reload_class (x, rclass);
-  else
-    gcc_unreachable ();
+  if (reg_class_subset_p (G16_REGS, rclass))
+    return G16_REGS;
+  if (reg_class_subset_p (G32_REGS, rclass))
+    return G32_REGS;
+  return rclass;
 }
 
 /* Implement SECONDARY_INPUT_RELOAD_CLASS
@@ -343,10 +840,13 @@ 
                               enum machine_mode mode ATTRIBUTE_UNUSED,
                               rtx x)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_secondary_reload_class (rclass, mode, x);
-  else
-    gcc_unreachable ();
+  int regno = -1;
+  if (GET_CODE (x) == REG || GET_CODE(x) == SUBREG)
+    regno = true_regnum (x);
+
+  if (!GR_REG_CLASS_P (rclass))
+    return GP_REG_P (regno) ? NO_REGS : G32_REGS;
+  return NO_REGS;
 }
 
 
@@ -355,22 +855,25 @@ 
 int
 score_hard_regno_mode_ok (unsigned int regno, enum machine_mode mode)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_hard_regno_mode_ok (regno, mode);
+  int size = GET_MODE_SIZE (mode);
+  enum mode_class mclass = GET_MODE_CLASS (mode);
+
+  if (mclass == MODE_CC)
+    return regno == CC_REGNUM;
+  else if (regno == FRAME_POINTER_REGNUM
+           || regno == ARG_POINTER_REGNUM)
+    return mclass == MODE_INT;
+  else if (GP_REG_P (regno))
+    /* ((regno <= (GP_REG_LAST- HARD_REGNO_NREGS (dummy, mode)) + 1)  */
+    return !(regno & 1) || (size <= UNITS_PER_WORD);
+  else if (CE_REG_P (regno))
+    return (mclass == MODE_INT
+            && ((size <= UNITS_PER_WORD)
+                || (regno == CE_REG_FIRST && size == 2 * UNITS_PER_WORD)));
   else
-    gcc_unreachable ();
+    return (mclass == MODE_INT) && (size <= UNITS_PER_WORD);
 }
 
-/* We can always eliminate to the hard frame pointer.  We can eliminate
-   to the stack pointer unless a frame pointer is needed.  */
-
-static bool
-score_can_eliminate (const int from ATTRIBUTE_UNUSED, const int to)
-{
-  return (to == HARD_FRAME_POINTER_REGNUM
-          || (to  == STACK_POINTER_REGNUM && !frame_pointer_needed));
-}
-
 /* Implement INITIAL_ELIMINATION_OFFSET.  FROM is either the frame
    pointer or argument pointer.  TO is either the stack pointer or
    hard frame pointer.  */
@@ -378,32 +881,29 @@ 
 score_initial_elimination_offset (int from,
                                   int to ATTRIBUTE_UNUSED)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_initial_elimination_offset (from, to);
-  else
-    gcc_unreachable ();
+  struct score_frame_info *f = score_compute_frame_size (get_frame_size ());
+  switch (from)
+    {
+    case ARG_POINTER_REGNUM:
+      return f->total_size;
+    case FRAME_POINTER_REGNUM:
+      return 0;
+    default:
+      gcc_unreachable ();
+    }
 }
 
-/* Argument support functions.  */
-
-/* Initialize CUMULATIVE_ARGS for a function.  */
-void
-score_init_cumulative_args (CUMULATIVE_ARGS *cum,
-                            tree fntype ATTRIBUTE_UNUSED,
-                            rtx libname ATTRIBUTE_UNUSED)
-{
-  memset (cum, 0, sizeof (CUMULATIVE_ARGS));
-}
-
 /* Implement TARGET_FUNCTION_ARG_ADVANCE hook.  */
 static void
 score_function_arg_advance (CUMULATIVE_ARGS *cum, enum machine_mode mode,
                             const_tree type, bool named)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_function_arg_advance (cum, mode, type, named);
-  else
-    gcc_unreachable ();
+  struct score_arg_info info;
+  score_classify_arg (cum, mode, type, named, &info);
+  cum->num_gprs = info.reg_offset + info.reg_words;
+  if (info.stack_words > 0)
+    cum->stack_words = info.stack_offset + info.stack_words;
+  cum->arg_number++;
 }
 
 /* Implement TARGET_ARG_PARTIAL_BYTES macro.  */
@@ -411,87 +911,120 @@ 
 score_arg_partial_bytes (CUMULATIVE_ARGS *cum,
                          enum machine_mode mode, tree type, bool named)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_arg_partial_bytes (cum, mode, type, named);
-  else
-    gcc_unreachable ();
+  struct score_arg_info info;
+  score_classify_arg (cum, mode, type, named, &info);
+  return info.stack_words > 0 ? info.reg_words * UNITS_PER_WORD : 0;
 }
 
 /* Implement TARGET_FUNCTION_ARG hook.  */
 static rtx
-score_function_arg (CUMULATIVE_ARGS *cum, enum machine_mode mode,
+score_function_arg (const CUMULATIVE_ARGS *cum, enum machine_mode mode,
                     const_tree type, bool named)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_function_arg (cum, mode, type, named);
+  struct score_arg_info info;
+
+  if (mode == VOIDmode || !named)
+    return 0;
+
+  score_classify_arg (cum, mode, type, named, &info);
+
+  if (info.reg_offset == ARG_REG_NUM)
+    return 0;
+
+  if (!info.stack_words)
+    return gen_rtx_REG (mode, ARG_REG_FIRST + info.reg_offset);
   else
-    gcc_unreachable ();
+    {
+      rtx ret = gen_rtx_PARALLEL (mode, rtvec_alloc (info.reg_words));
+      unsigned int i, part_offset = 0;
+      for (i = 0; i < info.reg_words; i++)
+        {
+          rtx reg;
+          reg = gen_rtx_REG (SImode, ARG_REG_FIRST + info.reg_offset + i);
+          XVECEXP (ret, 0, i) = gen_rtx_EXPR_LIST (SImode, reg,
+                                                   GEN_INT (part_offset));
+          part_offset += UNITS_PER_WORD;
+        }
+      return ret;
+    }
 }
 
 /* Implement FUNCTION_VALUE and LIBCALL_VALUE.  For normal calls,
    VALTYPE is the return type and MODE is VOIDmode.  For libcalls,
    VALTYPE is null and MODE is the mode of the return value.  */
 rtx
-score_function_value (const_tree valtype, const_tree func ATTRIBUTE_UNUSED,
-                      enum machine_mode mode)
+score_function_value (const_tree valtype, const_tree func, enum machine_mode mode)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_function_value (valtype, func, mode);
-  else
-    gcc_unreachable ();
+  if (valtype)
+    {
+      int unsignedp;
+      mode = TYPE_MODE (valtype);
+      unsignedp = TYPE_UNSIGNED (valtype);
+      mode = promote_function_mode (valtype, mode, &unsignedp, func, 1);
+    }
+  return gen_rtx_REG (mode, RT_REGNUM);
 }
 
 /* Implement TARGET_ASM_TRAMPOLINE_TEMPLATE.  */
+
 static void
 score_asm_trampoline_template (FILE *f)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_asm_trampoline_template (f);
-  else
-    gcc_unreachable ();
+  fprintf (f, "\t.set r1\n");
+  fprintf (f, "\tmv r31, r3\n");
+  fprintf (f, "\tbl nextinsn\n");
+  fprintf (f, "nextinsn:\n");
+  fprintf (f, "\tlw r1, [r3, 6*4-8]\n");
+  fprintf (f, "\tlw r23, [r3, 6*4-4]\n");
+  fprintf (f, "\tmv r3, r31\n");
+  fprintf (f, "\tbr! r1\n");
+  fprintf (f, "\tnop!\n");
+  fprintf (f, "\t.set nor1\n");
 }
 
 /* Implement TARGET_TRAMPOLINE_INIT.  */
 static void
 score_trampoline_init (rtx m_tramp, tree fndecl, rtx chain_value)
 {
-  if ( TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_trampoline_init (m_tramp, fndecl, chain_value);
-  else  
-    gcc_unreachable ();
+#define CODE_SIZE        (TRAMPOLINE_INSNS * UNITS_PER_WORD)
+
+  rtx fnaddr = XEXP (DECL_RTL (fndecl), 0);
+  rtx mem;
+
+  emit_block_move (m_tramp, assemble_trampoline_template (),
+		   GEN_INT (TRAMPOLINE_SIZE), BLOCK_OP_NORMAL);
+
+  mem = adjust_address (m_tramp, SImode, CODE_SIZE);
+  emit_move_insn (mem, fnaddr);
+  mem = adjust_address (m_tramp, SImode, CODE_SIZE + GET_MODE_SIZE (SImode));
+  emit_move_insn (mem, chain_value);
+
+#undef CODE_SIZE
 }
 
 /* This function is used to implement REG_MODE_OK_FOR_BASE_P macro.  */
 int
 score_regno_mode_ok_for_base_p (int regno, int strict)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_regno_mode_ok_for_base_p (regno, strict);
-  else
-    gcc_unreachable ();
+  if (regno >= FIRST_PSEUDO_REGISTER)
+    {
+      if (!strict)
+        return 1;
+      regno = reg_renumber[regno];
+    }
+  if (regno == ARG_POINTER_REGNUM
+      || regno == FRAME_POINTER_REGNUM)
+    return 1;
+  return GP_REG_P (regno);
 }
 
-/* Implement TARGET_LEGITIMIZE_ADDRESS_P.  */
+/* Implement TARGET_LEGITIMATE_ADDRESS_P macro.  */
 static bool
 score_legitimate_address_p (enum machine_mode mode, rtx x, bool strict)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_legitimate_address_p (mode, x, strict);
-  else
-    gcc_unreachable ();
-}
+  struct score_address_info addr;
 
-/* This function is used to implement LEGITIMIZE_ADDRESS.  If X can
-   be legitimized in a way that the generic machinery might not expect,
-   return the new address, else return X.  */
-static rtx
-score_legitimize_address (rtx x, rtx oldx ATTRIBUTE_UNUSED,
-			  enum machine_mode mode ATTRIBUTE_UNUSED)
-{
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_legitimize_address (x);
-  else
-    gcc_unreachable ();
+  return score_classify_address (&addr, mode, x, strict);
 }
 
 /* Return a number assessing the cost of moving a register in class
@@ -500,21 +1033,226 @@ 
 score_register_move_cost (enum machine_mode mode ATTRIBUTE_UNUSED,
                           enum reg_class from, enum reg_class to)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_register_move_cost (mode, from, to);
+  if (GR_REG_CLASS_P (from))
+    {
+      if (GR_REG_CLASS_P (to))
+        return 2;
+      else if (SP_REG_CLASS_P (to))
+        return 4;
+      else if (CP_REG_CLASS_P (to))
+        return 5;
+      else if (CE_REG_CLASS_P (to))
+        return 6;
+    }
+  if (GR_REG_CLASS_P (to))
+    {
+      if (GR_REG_CLASS_P (from))
+        return 2;
+      else if (SP_REG_CLASS_P (from))
+        return 4;
+      else if (CP_REG_CLASS_P (from))
+        return 5;
+      else if (CE_REG_CLASS_P (from))
+        return 6;
+    }
+  return 12;
+}
+
+/* Return the number of instructions needed to load a symbol of the
+   given type into a register.  */
+static int
+score_symbol_insns (enum score_symbol_type type)
+{
+  switch (type)
+    {
+    case SYMBOL_GENERAL:
+      return 2;
+
+    case SYMBOL_SMALL_DATA:
+      return 1;
+    }
+
+  gcc_unreachable ();
+}
+
+/* Return the number of instructions needed to load or store a value
+   of mode MODE at X.  Return 0 if X isn't valid for MODE.  */
+static int
+score_address_insns (rtx x, enum machine_mode mode)
+{
+  struct score_address_info addr;
+  int factor;
+
+  if (mode == BLKmode)
+    factor = 1;
   else
-    gcc_unreachable ();
+    factor = (GET_MODE_SIZE (mode) + UNITS_PER_WORD - 1) / UNITS_PER_WORD;
+
+  if (score_classify_address (&addr, mode, x, false))
+    switch (addr.type)
+      {
+      case SCORE_ADD_REG:
+      case SCORE_ADD_CONST_INT:
+        return factor;
+
+      case SCORE_ADD_SYMBOLIC:
+        return factor * score_symbol_insns (addr.symbol_type);
+      }
+  return 0;
 }
 
 /* Implement TARGET_RTX_COSTS macro.  */
 bool
-score_rtx_costs (rtx x, int code, int outer_code, int *total,
-		 bool speed ATTRIBUTE_UNUSED)
+score_rtx_costs (rtx x, int code, int outer_code, int *total, bool speed ATTRIBUTE_UNUSED)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_rtx_costs (x, code, outer_code, total, speed);
-  else
-    gcc_unreachable ();
+  enum machine_mode mode = GET_MODE (x);
+
+  switch (code)
+    {
+    case CONST_INT:
+      if (outer_code == SET)
+        {
+          if (((INTVAL (x) & 0xffff) == 0) 
+              || (INTVAL (x) >= -32768 && INTVAL (x) <= 32767))
+            *total = COSTS_N_INSNS (1);
+          else
+            *total = COSTS_N_INSNS (2);
+        }
+      else if (outer_code == PLUS || outer_code == MINUS)
+        {
+          if (INTVAL (x) >= -8192 && INTVAL (x) <= 8191)
+            *total = 0;
+          else if (((INTVAL (x) & 0xffff) == 0)
+                   || (INTVAL (x) >= -32768 && INTVAL (x) <= 32767))
+            *total = 1;
+          else
+            *total = COSTS_N_INSNS (2);
+        }
+      else if (outer_code == AND || outer_code == IOR)
+        {
+          if (INTVAL (x) >= 0 && INTVAL (x) <= 16383)
+            *total = 0;
+          else if (((INTVAL (x) & 0xffff) == 0)
+                   || (INTVAL (x) >= 0 && INTVAL (x) <= 65535))
+            *total = 1;
+          else
+            *total = COSTS_N_INSNS (2);
+        }
+      else
+        {
+          *total = 0;
+        }
+      return true;
+
+    case CONST:
+    case SYMBOL_REF:
+    case LABEL_REF:
+    case CONST_DOUBLE:
+      *total = COSTS_N_INSNS (2);
+      return true;
+
+    case MEM:
+      {
+        /* If the address is legitimate, return the number of
+           instructions it needs, otherwise use the default handling.  */
+        int n = score_address_insns (XEXP (x, 0), GET_MODE (x));
+        if (n > 0)
+          {
+            *total = COSTS_N_INSNS (n + 1);
+            return true;
+          }
+        return false;
+      }
+
+    case FFS:
+      *total = COSTS_N_INSNS (6);
+      return true;
+
+    case NOT:
+      *total = COSTS_N_INSNS (1);
+      return true;
+
+    case AND:
+    case IOR:
+    case XOR:
+      if (mode == DImode)
+        {
+          *total = COSTS_N_INSNS (2);
+          return true;
+        }
+      return false;
+
+    case ASHIFT:
+    case ASHIFTRT:
+    case LSHIFTRT:
+      if (mode == DImode)
+        {
+          *total = COSTS_N_INSNS ((GET_CODE (XEXP (x, 1)) == CONST_INT)
+                                  ? 4 : 12);
+          return true;
+        }
+      return false;
+
+    case ABS:
+      *total = COSTS_N_INSNS (4);
+      return true;
+
+    case PLUS:
+    case MINUS:
+      if (mode == DImode)
+        {
+          *total = COSTS_N_INSNS (4);
+          return true;
+        }
+      *total = COSTS_N_INSNS (1);
+      return true;
+
+    case NEG:
+      if (mode == DImode)
+        {
+          *total = COSTS_N_INSNS (4);
+          return true;
+        }
+      return false;
+
+    case MULT:
+      *total = optimize_size ? COSTS_N_INSNS (2) : COSTS_N_INSNS (12);
+      return true;
+
+    case DIV:
+    case MOD:
+    case UDIV:
+    case UMOD:
+      *total = optimize_size ? COSTS_N_INSNS (2) : COSTS_N_INSNS (33);
+      return true;
+
+    case SIGN_EXTEND:
+    case ZERO_EXTEND:
+      switch (GET_MODE (XEXP (x, 0)))
+        {
+        case QImode:
+        case HImode:
+          if (GET_CODE (XEXP (x, 0)) == MEM)
+            {
+              *total = COSTS_N_INSNS (2);
+
+              if (!TARGET_LITTLE_ENDIAN &&
+                  side_effects_p (XEXP (XEXP (x, 0), 0)))
+                *total = 100;
+            }
+          else
+            *total = COSTS_N_INSNS (1);
+          break;
+
+        default:
+          *total = COSTS_N_INSNS (1);
+          break;
+        }
+      return true;
+
+    default:
+      return false;
+    }
 }
 
 /* Implement TARGET_ADDRESS_COST macro.  */
@@ -522,10 +1260,7 @@ 
 score_address_cost (rtx addr,
 		    bool speed ATTRIBUTE_UNUSED)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_address_cost (addr);
-  else
-    gcc_unreachable ();
+  return score_address_insns (addr, SImode);
 }
 
 /* Implement ASM_OUTPUT_EXTERNAL macro.  */
@@ -533,10 +1268,17 @@ 
 score_output_external (FILE *file ATTRIBUTE_UNUSED,
                        tree decl, const char *name)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_output_external (file, decl, name);
-  else
-    gcc_unreachable ();
+  register struct extern_list *p;
+
+  if (score_in_small_data_p (decl))
+    {
+      p = ggc_alloc_extern_list ();
+      p->next = extern_head;
+      p->name = name;
+      p->size = int_size_in_bytes (TREE_TYPE (decl));
+      extern_head = p;
+    }
+  return 0;
 }
 
 /* Implement RETURN_ADDR_RTX.  Note, we do not support moving
@@ -544,40 +1286,363 @@ 
 rtx
 score_return_addr (int count, rtx frame ATTRIBUTE_UNUSED)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_return_addr (count, frame);
-  else
-    gcc_unreachable ();
+  if (count != 0)
+    return const0_rtx;
+  return get_hard_reg_initial_val (Pmode, RA_REGNUM);
 }
 
 /* Implement PRINT_OPERAND macro.  */
+/* Score-specific operand codes:
+   '['        print .set nor1 directive
+   ']'        print .set r1 directive
+   'U'        print hi part of a CONST_INT rtx
+   'E'        print log2(v)
+   'F'        print log2(~v)
+   'D'        print SFmode const double
+   'S'        selectively print "!" if operand is 15bit instruction accessible
+   'V'        print "v!" if operand is 15bit instruction accessible, or "lfh!"
+   'L'        low  part of DImode reg operand
+   'H'        high part of DImode reg operand
+   'C'        print part of opcode for a branch condition.  */
 void
 score_print_operand (FILE *file, rtx op, int c)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_print_operand (file, op, c);
+  enum rtx_code code = UNKNOWN;
+  if (!PRINT_OPERAND_PUNCT_VALID_P (c))
+    code = GET_CODE (op);
+
+  if (c == '[')
+    {
+      fprintf (file, ".set r1\n");
+    }
+  else if (c == ']')
+    {
+      fprintf (file, "\n\t.set nor1");
+    }
+  else if (c == 'U')
+    {
+      gcc_assert (code == CONST_INT);
+      fprintf (file, HOST_WIDE_INT_PRINT_HEX,
+               (INTVAL (op) >> 16) & 0xffff);
+    }
+  else if (c == 'D')
+    {
+      if (GET_CODE (op) == CONST_DOUBLE)
+        {
+          rtx temp = gen_lowpart (SImode, op);
+          gcc_assert (GET_MODE (op) == SFmode);
+          fprintf (file, HOST_WIDE_INT_PRINT_HEX, INTVAL (temp) & 0xffffffff);
+        }
+      else
+        output_addr_const (file, op);
+    }
+  else if (c == 'S')
+    {
+      gcc_assert (code == REG);
+      if (G16_REG_P (REGNO (op)))
+        fprintf (file, "!");
+    }
+  else if (c == 'V')
+    {
+      gcc_assert (code == REG);
+      fprintf (file, G16_REG_P (REGNO (op)) ? "v!" : "lfh!");
+    }
+  else if (c == 'C')
+    {
+      enum machine_mode mode = GET_MODE (XEXP (op, 0));
+
+      switch (code)
+        {
+        case EQ: fputs ("eq", file); break;
+        case NE: fputs ("ne", file); break;
+        case GT: fputs ("gt", file); break;
+        case GE: fputs (mode != CCmode ? "pl" : "ge", file); break;
+        case LT: fputs (mode != CCmode ? "mi" : "lt", file); break;
+        case LE: fputs ("le", file); break;
+        case GTU: fputs ("gtu", file); break;
+        case GEU: fputs ("cs", file); break;
+        case LTU: fputs ("cc", file); break;
+        case LEU: fputs ("leu", file); break;
+        default:
+          output_operand_lossage ("invalid operand for code: '%c'", code);
+        }
+    }
+  else if (c == 'E')
+    {
+      unsigned HOST_WIDE_INT i;
+      unsigned HOST_WIDE_INT pow2mask = 1;
+      unsigned HOST_WIDE_INT val;
+
+      val = INTVAL (op);
+      for (i = 0; i < 32; i++)
+        {
+          if (val == pow2mask)
+            break;
+          pow2mask <<= 1;
+        }
+      gcc_assert (i < 32);
+      fprintf (file, HOST_WIDE_INT_PRINT_HEX, i);
+    }
+  else if (c == 'F')
+    {
+      unsigned HOST_WIDE_INT i;
+      unsigned HOST_WIDE_INT pow2mask = 1;
+      unsigned HOST_WIDE_INT val;
+
+      val = ~INTVAL (op);
+      for (i = 0; i < 32; i++)
+        {
+          if (val == pow2mask)
+            break;
+          pow2mask <<= 1;
+        }
+      gcc_assert (i < 32);
+      fprintf (file, HOST_WIDE_INT_PRINT_HEX, i);
+    }
+  else if (code == REG)
+    {
+      int regnum = REGNO (op);
+      if ((c == 'H' && !WORDS_BIG_ENDIAN)
+          || (c == 'L' && WORDS_BIG_ENDIAN))
+        regnum ++;
+      fprintf (file, "%s", reg_names[regnum]);
+    }
   else
-    gcc_unreachable ();
+    {
+      switch (code)
+        {
+        case MEM:
+          score_print_operand_address (file, op);
+          break;
+        default:
+          output_addr_const (file, op);
+        }
+    }
 }
 
 /* Implement PRINT_OPERAND_ADDRESS macro.  */
 void
 score_print_operand_address (FILE *file, rtx x)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_print_operand_address (file, x);
-  else
-    gcc_unreachable ();
+  struct score_address_info addr;
+  enum rtx_code code = GET_CODE (x);
+  enum machine_mode mode = GET_MODE (x);
+
+  if (code == MEM)
+    x = XEXP (x, 0);
+
+  if (score_classify_address (&addr, mode, x, true))
+    {
+      switch (addr.type)
+        {
+        case SCORE_ADD_REG:
+          {
+            switch (addr.code)
+              {
+              case PRE_DEC:
+                fprintf (file, "[%s,-%ld]+", reg_names[REGNO (addr.reg)],
+                         INTVAL (addr.offset));
+                break;
+              case POST_DEC:
+                fprintf (file, "[%s]+,-%ld", reg_names[REGNO (addr.reg)],
+                         INTVAL (addr.offset));
+                break;
+              case PRE_INC:
+                fprintf (file, "[%s, %ld]+", reg_names[REGNO (addr.reg)],
+                         INTVAL (addr.offset));
+                break;
+              case POST_INC:
+                fprintf (file, "[%s]+, %ld", reg_names[REGNO (addr.reg)],
+                         INTVAL (addr.offset));
+                break;
+              default:
+                if (INTVAL(addr.offset) == 0)
+                  fprintf(file, "[%s]", reg_names[REGNO (addr.reg)]);
+                else
+                  fprintf(file, "[%s, %ld]", reg_names[REGNO (addr.reg)],
+                          INTVAL(addr.offset));
+                break;
+              }
+          }
+          return;
+        case SCORE_ADD_CONST_INT:
+        case SCORE_ADD_SYMBOLIC:
+          output_addr_const (file, x);
+          return;
+        }
+    }
+  print_rtl (stderr, x);
+  gcc_unreachable ();
 }
 
 /* Implement SELECT_CC_MODE macro.  */
 enum machine_mode
 score_select_cc_mode (enum rtx_code op, rtx x, rtx y)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_select_cc_mode (op, x, y);
+  if ((op == EQ || op == NE || op == LT || op == GE)
+      && y == const0_rtx
+      && GET_MODE (x) == SImode)
+    {
+      switch (GET_CODE (x))
+        {
+        case PLUS:
+        case MINUS:
+        case NEG:
+        case AND:
+        case IOR:
+        case XOR:
+        case NOT:
+        case ASHIFT:
+        case LSHIFTRT:
+        case ASHIFTRT:
+          return CC_NZmode;
+
+        case SIGN_EXTEND:
+        case ZERO_EXTEND:
+        case ROTATE:
+        case ROTATERT:
+          return (op == LT || op == GE) ? CC_Nmode : CCmode;
+
+        default:
+          return CCmode;
+        }
+    }
+
+  if ((op == EQ || op == NE)
+      && (GET_CODE (y) == NEG)
+      && register_operand (XEXP (y, 0), SImode)
+      && register_operand (x, SImode))
+    {
+      return CC_NZmode;
+    }
+
+  return CCmode;
+}
+
+/* Generate the prologue instructions for entry into a S+core function.  */
+void
+score_prologue (void)
+{
+#define EMIT_PL(_rtx)        RTX_FRAME_RELATED_P (_rtx) = 1
+
+  struct score_frame_info *f = score_compute_frame_size (get_frame_size ());
+  HOST_WIDE_INT size;
+  int regno;
+
+  size = f->total_size - f->gp_reg_size;
+
+  if (flag_pic)
+    emit_insn (gen_cpload_score7 ());
+
+  for (regno = (int) GP_REG_LAST; regno >= (int) GP_REG_FIRST; regno--)
+    {
+      if (BITSET_P (f->mask, regno - GP_REG_FIRST))
+        {
+          rtx mem = gen_rtx_MEM (SImode,
+                                 gen_rtx_PRE_DEC (SImode, stack_pointer_rtx));
+          rtx reg = gen_rtx_REG (SImode, regno);
+          if (!crtl->calls_eh_return)
+            MEM_READONLY_P (mem) = 1;
+          EMIT_PL (emit_insn (gen_pushsi_score7 (mem, reg)));
+        }
+    }
+
+  if (size > 0)
+    {
+      rtx insn;
+
+      if (size >= -32768 && size <= 32767)
+        EMIT_PL (emit_insn (gen_add3_insn (stack_pointer_rtx,
+                                           stack_pointer_rtx,
+                                           GEN_INT (-size))));
+      else
+        {
+          EMIT_PL (emit_move_insn (gen_rtx_REG (Pmode, SCORE_PROLOGUE_TEMP_REGNUM),
+                                   GEN_INT (size)));
+          EMIT_PL (emit_insn
+                   (gen_sub3_insn (stack_pointer_rtx,
+                                   stack_pointer_rtx,
+                                   gen_rtx_REG (Pmode,
+                                                SCORE_PROLOGUE_TEMP_REGNUM))));
+        }
+      insn = get_last_insn ();
+      REG_NOTES (insn) =
+        alloc_EXPR_LIST (REG_FRAME_RELATED_EXPR,
+                         gen_rtx_SET (VOIDmode, stack_pointer_rtx,
+                                      plus_constant (stack_pointer_rtx,
+                                                     -size)),
+                                      REG_NOTES (insn));
+    }
+
+  if (frame_pointer_needed)
+    EMIT_PL (emit_move_insn (hard_frame_pointer_rtx, stack_pointer_rtx));
+
+  if (flag_pic && f->cprestore_size)
+    {
+      if (frame_pointer_needed)
+        emit_insn (gen_cprestore_use_fp_score7 (GEN_INT (size - f->cprestore_size)));
+      else
+        emit_insn (gen_cprestore_use_sp_score7 (GEN_INT (size - f->cprestore_size)));
+    }
+
+#undef EMIT_PL
+}
+
+/* Generate the epilogue instructions in a S+core function.  */
+void
+score_epilogue (int sibcall_p)
+{
+  struct score_frame_info *f = score_compute_frame_size (get_frame_size ());
+  HOST_WIDE_INT size;
+  int regno;
+  rtx base;
+
+  size = f->total_size - f->gp_reg_size;
+
+  if (!frame_pointer_needed)
+    base = stack_pointer_rtx;
   else
-    gcc_unreachable ();
+    base = hard_frame_pointer_rtx;
+
+  if (size)
+    {
+      if (size >= -32768 && size <= 32767)
+        emit_insn (gen_add3_insn (base, base, GEN_INT (size)));
+      else
+        {
+          emit_move_insn (gen_rtx_REG (Pmode, SCORE_EPILOGUE_TEMP_REGNUM),
+                          GEN_INT (size));
+          emit_insn (gen_add3_insn (base, base,
+                                    gen_rtx_REG (Pmode,
+                                                 SCORE_EPILOGUE_TEMP_REGNUM)));
+        }
+    }
+
+  if (base != stack_pointer_rtx)
+    emit_move_insn (stack_pointer_rtx, base);
+
+  if (crtl->calls_eh_return)
+    emit_insn (gen_add3_insn (stack_pointer_rtx,
+                              stack_pointer_rtx,
+                              EH_RETURN_STACKADJ_RTX));
+
+  for (regno = (int) GP_REG_FIRST; regno <= (int) GP_REG_LAST; regno++)
+    {
+      if (BITSET_P (f->mask, regno - GP_REG_FIRST))
+        {
+          rtx mem = gen_rtx_MEM (SImode,
+                                 gen_rtx_POST_INC (SImode, stack_pointer_rtx));
+          rtx reg = gen_rtx_REG (SImode, regno);
+
+          if (!crtl->calls_eh_return)
+            MEM_READONLY_P (mem) = 1;
+
+          emit_insn (gen_popsi_score7 (reg, mem));
+        }
+    }
+
+  if (!sibcall_p)
+    emit_jump_insn (gen_return_internal_score7 (gen_rtx_REG (Pmode, RA_REGNUM)));
 }
 
 /* Return true if X is a symbolic constant that can be calculated in
@@ -586,143 +1651,411 @@ 
 int
 score_symbolic_constant_p (rtx x, enum score_symbol_type *symbol_type)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_symbolic_constant_p (x, symbol_type);
+  HOST_WIDE_INT offset;
+
+  score_split_const (x, &x, &offset);
+  if (GET_CODE (x) == SYMBOL_REF || GET_CODE (x) == LABEL_REF)
+    *symbol_type = score_classify_symbol (x);
   else
-    gcc_unreachable ();
+    return 0;
+
+  if (offset == 0)
+    return 1;
+
+  /* if offset > 15bit, must reload  */
+  if (!IMM_IN_RANGE (offset, 15, 1))
+    return 0;
+
+  switch (*symbol_type)
+    {
+    case SYMBOL_GENERAL:
+      return 1;
+    case SYMBOL_SMALL_DATA:
+      return score_offset_within_object_p (x, offset);
+    }
+  gcc_unreachable ();
 }
 
-/* Generate the prologue instructions for entry into a S+core function.  */
 void
-score_prologue (void)
+score_movsicc (rtx *ops)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_prologue ();
-  else
-    gcc_unreachable ();
-}
+  enum machine_mode mode;
 
-/* Generate the epilogue instructions in a S+core function.  */
-void
-score_epilogue (int sibcall_p)
-{
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_epilogue (sibcall_p);
-  else
-    gcc_unreachable ();
+  mode = score_select_cc_mode (GET_CODE (ops[1]), ops[2], ops[3]);
+  emit_insn (gen_rtx_SET (VOIDmode, gen_rtx_REG (mode, CC_REGNUM),
+                          gen_rtx_COMPARE (mode, XEXP (ops[1], 0),
+					   XEXP (ops[1], 1))));
 }
 
 /* Call and sibcall pattern all need call this function.  */
 void
 score_call (rtx *ops, bool sib)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_call (ops, sib);
+  rtx addr = XEXP (ops[0], 0);
+  if (!call_insn_operand (addr, VOIDmode))
+    {
+      rtx oaddr = addr;
+      addr = gen_reg_rtx (Pmode);
+      gen_move_insn (addr, oaddr);
+    }
+
+  if (sib)
+    emit_call_insn (gen_sibcall_internal_score7 (addr, ops[1]));
   else
-    gcc_unreachable ();
+    emit_call_insn (gen_call_internal_score7 (addr, ops[1]));
 }
 
 /* Call value and sibcall value pattern all need call this function.  */
 void
 score_call_value (rtx *ops, bool sib)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_call_value (ops, sib);
-  else
-    gcc_unreachable ();
-}
+  rtx result = ops[0];
+  rtx addr = XEXP (ops[1], 0);
+  rtx arg = ops[2];
 
-void
-score_movsicc (rtx *ops)
-{
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_movsicc (ops);
+  if (!call_insn_operand (addr, VOIDmode))
+    {
+      rtx oaddr = addr;
+      addr = gen_reg_rtx (Pmode);
+      gen_move_insn (addr, oaddr);
+    }
+
+  if (sib)
+    emit_call_insn (gen_sibcall_value_internal_score7 (result, addr, arg));
   else
-    gcc_unreachable ();
+    emit_call_insn (gen_call_value_internal_score7 (result, addr, arg));
 }
 
 /* Machine Split  */
 void
 score_movdi (rtx *ops)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_movdi (ops);
+  rtx dst = ops[0];
+  rtx src = ops[1];
+  rtx dst0 = score_subw (dst, 0);
+  rtx dst1 = score_subw (dst, 1);
+  rtx src0 = score_subw (src, 0);
+  rtx src1 = score_subw (src, 1);
+
+  if (GET_CODE (dst0) == REG && reg_overlap_mentioned_p (dst0, src))
+    {
+      emit_move_insn (dst1, src1);
+      emit_move_insn (dst0, src0);
+    }
   else
-    gcc_unreachable ();
+    {
+      emit_move_insn (dst0, src0);
+      emit_move_insn (dst1, src1);
+    }
 }
 
 void
 score_zero_extract_andi (rtx *ops)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    score7_zero_extract_andi (ops);
+  if (INTVAL (ops[1]) == 1 && const_uimm5 (ops[2], SImode))
+    emit_insn (gen_zero_extract_bittst_score7 (ops[0], ops[2]));
   else
-    gcc_unreachable ();
+    {
+      unsigned HOST_WIDE_INT mask;
+      mask = (0xffffffffU & ((1U << INTVAL (ops[1])) - 1U));
+      mask = mask << INTVAL (ops[2]);
+      emit_insn (gen_andsi3_cmp_score7 (ops[3], ops[0],
+                                 gen_int_mode (mask, SImode)));
+    }
 }
 
-/* Output asm insn for move.  */
-const char *
-score_move (rtx *ops)
+/* Check addr could be present as PRE/POST mode.  */
+static bool
+score_pindex_mem (rtx addr)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_move (ops);
-  else
-    gcc_unreachable ();
+  if (GET_CODE (addr) == MEM)
+    {
+      switch (GET_CODE (XEXP (addr, 0)))
+        {
+        case PRE_DEC:
+        case POST_DEC:
+        case PRE_INC:
+        case POST_INC:
+          return true;
+        default:
+          break;
+        }
+    }
+  return false;
 }
 
+/* Output asm code for ld/sw insn.  */
+static int
+score_pr_addr_post (rtx *ops, int idata, int iaddr, char *ip, enum score_mem_unit unit)
+{
+  struct score_address_info ai;
+
+  gcc_assert (GET_CODE (ops[idata]) == REG);
+  gcc_assert (score_classify_address (&ai, SImode, XEXP (ops[iaddr], 0), true));
+
+  if (!score_pindex_mem (ops[iaddr])
+      && ai.type == SCORE_ADD_REG
+      && GET_CODE (ai.offset) == CONST_INT
+      && G16_REG_P (REGNO (ops[idata]))
+      && G16_REG_P (REGNO (ai.reg)))
+    {
+      if (INTVAL (ai.offset) == 0)
+        {
+          ops[iaddr] = ai.reg;
+          return snprintf (ip, INS_BUF_SZ,
+                           "!\t%%%d, [%%%d]", idata, iaddr);
+        }
+      if (REGNO (ai.reg) == HARD_FRAME_POINTER_REGNUM)
+        {
+          HOST_WIDE_INT offset = INTVAL (ai.offset);
+          if (SCORE_ALIGN_UNIT (offset, unit)
+              && (((offset >> unit) >= 0) && ((offset >> unit) <= 31)))
+            {
+              ops[iaddr] = ai.offset;
+              return snprintf (ip, INS_BUF_SZ,
+                               "p!\t%%%d, %%c%d", idata, iaddr);
+            }
+        }
+    }
+  return snprintf (ip, INS_BUF_SZ, "\t%%%d, %%a%d", idata, iaddr);
+}
+
 /* Output asm insn for load.  */
 const char *
 score_linsn (rtx *ops, enum score_mem_unit unit, bool sign)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_linsn (ops, unit, sign);
+  const char *pre_ins[] =
+    {"lbu", "lhu", "lw", "??", "lb", "lh", "lw", "??"};
+  char *ip;
+
+  strcpy (score_ins, pre_ins[(sign ? 4 : 0) + unit]);
+  ip = score_ins + strlen (score_ins);
+
+  if ((!sign && unit != SCORE_HWORD)
+      || (sign && unit != SCORE_BYTE))
+    score_pr_addr_post (ops, 0, 1, ip, unit);
   else
-    gcc_unreachable ();
+    snprintf (ip, INS_BUF_SZ, "\t%%0, %%a1");
+
+  return score_ins;
 }
 
 /* Output asm insn for store.  */
 const char *
 score_sinsn (rtx *ops, enum score_mem_unit unit)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_sinsn (ops, unit);
-  else
-    gcc_unreachable ();
+  const char *pre_ins[] = {"sb", "sh", "sw"};
+  char *ip;
+
+  strcpy (score_ins, pre_ins[unit]);
+  ip = score_ins + strlen (score_ins);
+  score_pr_addr_post (ops, 1, 0, ip, unit);
+  return score_ins;
 }
 
 /* Output asm insn for load immediate.  */
 const char *
 score_limm (rtx *ops)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_limm (ops);
+  HOST_WIDE_INT v;
+
+  gcc_assert (GET_CODE (ops[0]) == REG);
+  gcc_assert (GET_CODE (ops[1]) == CONST_INT);
+
+  v = INTVAL (ops[1]);
+  if (G16_REG_P (REGNO (ops[0])) && IMM_IN_RANGE (v, 8, 0))
+    return "ldiu!\t%0, %c1";
+  else if (IMM_IN_RANGE (v, 16, 1))
+    return "ldi\t%0, %c1";
+  else if ((v & 0xffff) == 0)
+    return "ldis\t%0, %U1";
   else
-    gcc_unreachable ();
+    return "li\t%0, %c1";
 }
 
+/* Output asm insn for move.  */
+const char *
+score_move (rtx *ops)
+{
+  gcc_assert (GET_CODE (ops[0]) == REG);
+  gcc_assert (GET_CODE (ops[1]) == REG);
 
+  if (G16_REG_P (REGNO (ops[0])))
+    {
+      if (G16_REG_P (REGNO (ops[1])))
+        return "mv!\t%0, %1";
+      else
+        return "mlfh!\t%0, %1";
+    }
+  else if (G16_REG_P (REGNO (ops[1])))
+    return "mhfl!\t%0, %1";
+  else
+    return "mv\t%0, %1";
+}
+
 /* Generate add insn.  */
 const char *
 score_select_add_imm (rtx *ops, bool set_cc)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_select_add_imm (ops, set_cc);
+  HOST_WIDE_INT v = INTVAL (ops[2]);
+
+  gcc_assert (GET_CODE (ops[2]) == CONST_INT);
+  gcc_assert (REGNO (ops[0]) == REGNO (ops[1]));
+
+  if (set_cc && G16_REG_P (REGNO (ops[0])))
+    {
+      if (v > 0 && IMM_IS_POW_OF_2 ((unsigned HOST_WIDE_INT) v, 0, 15))
+        {
+          ops[2] = GEN_INT (ffs (v) - 1);
+          return "addei!\t%0, %c2";
+        }
+
+      if (v < 0 && IMM_IS_POW_OF_2 ((unsigned HOST_WIDE_INT) (-v), 0, 15))
+        {
+          ops[2] = GEN_INT (ffs (-v) - 1);
+          return "subei!\t%0, %c2";
+        }
+    }
+
+  if (set_cc)
+    return "addi.c\t%0, %c2";
   else
-    gcc_unreachable ();
+    return "addi\t%0, %c2";
 }
 
 /* Output arith insn.  */
 const char *
 score_select (rtx *ops, const char *inst_pre,
-            bool commu, const char *letter, bool set_cc)
+              bool commu, const char *letter, bool set_cc)
 {
-  if (TARGET_SCORE7 || TARGET_SCORE7D)
-    return score7_select (ops, inst_pre, commu, letter, set_cc);
+  gcc_assert (GET_CODE (ops[0]) == REG);
+  gcc_assert (GET_CODE (ops[1]) == REG);
+
+  if (set_cc && G16_REG_P (REGNO (ops[0]))
+      && (GET_CODE (ops[2]) == REG ? G16_REG_P (REGNO (ops[2])) : 1)
+      && REGNO (ops[0]) == REGNO (ops[1]))
+    {
+      snprintf (score_ins, INS_BUF_SZ, "%s!\t%%0, %%%s2", inst_pre, letter);
+      return score_ins;
+    }
+
+  if (commu && set_cc && G16_REG_P (REGNO (ops[0]))
+      && G16_REG_P (REGNO (ops[1]))
+      && REGNO (ops[0]) == REGNO (ops[2]))
+    {
+      gcc_assert (GET_CODE (ops[2]) == REG);
+      snprintf (score_ins, INS_BUF_SZ, "%s!\t%%0, %%%s1", inst_pre, letter);
+      return score_ins;
+    }
+
+  if (set_cc)
+    snprintf (score_ins, INS_BUF_SZ, "%s.c\t%%0, %%1, %%%s2", inst_pre, letter);
   else
-    gcc_unreachable ();
+    snprintf (score_ins, INS_BUF_SZ, "%s\t%%0, %%1, %%%s2", inst_pre, letter);
+  return score_ins;
 }
 
+/* Return nonzero when an argument must be passed by reference.  */
+static bool
+score_pass_by_reference (CUMULATIVE_ARGS *cum ATTRIBUTE_UNUSED,
+                         enum machine_mode mode, const_tree type,
+                         bool named ATTRIBUTE_UNUSED)
+{
+  /* If we have a variable-sized parameter, we have no choice.  */
+  return targetm.calls.must_pass_in_stack (mode, type);
+}
+
+/* Implement TARGET_FUNCTION_OK_FOR_SIBCALL.  */
+static bool
+score_function_ok_for_sibcall (ATTRIBUTE_UNUSED tree decl,
+                               ATTRIBUTE_UNUSED tree exp)
+{
+  return true;
+}
+
+/* Implement TARGET_SCHED_ISSUE_RATE.  */
+static int
+score_issue_rate (void)
+{
+  return 1;
+}
+
+/* Implement TARGET_ASM_FILE_START.  */
 static void
+score_asm_file_start (void)
+{
+  if (TARGET_SCORE7D)
+    fprintf (asm_out_file, "# Sunplus S+core7d %s rev=%s\n",
+             TARGET_LITTLE_ENDIAN ? "el" : "eb", SCORE_GCC_VERSION);
+  else if (TARGET_SCORE7)
+    fprintf (asm_out_file, "# Sunplus S+core7 %s rev=%s\n",
+             TARGET_LITTLE_ENDIAN ? "el" : "eb", SCORE_GCC_VERSION);
+  else
+    fprintf (asm_out_file, "# Sunplus S+core unknown %s rev=%s\n",
+             TARGET_LITTLE_ENDIAN ? "el" : "eb", SCORE_GCC_VERSION);
+
+  default_file_start ();
+
+  if (flag_pic)
+    fprintf (asm_out_file, "\t.set pic\n");
+}
+
+#define MASK_ALL_CPU_BITS	(MASK_SCORE7 | MASK_SCORE7D)
+
+/* Implement TARGET_HANDLE_OPTION.  */
+static bool
+score_handle_option (size_t code, const char *arg, int value ATTRIBUTE_UNUSED)
+{
+  switch (code)
+    {
+    case OPT_mscore7d:
+      target_flags &= ~(MASK_ALL_CPU_BITS);
+      target_flags |= MASK_SCORE7 | MASK_SCORE7D;
+      return true;
+
+    case OPT_march_:
+      if (strcmp (arg, "score7") == 0)
+        {
+          target_flags &= ~(MASK_ALL_CPU_BITS);
+          target_flags |= MASK_SCORE7;
+          return true;
+        }
+      else if (strcmp (arg, "score7d") == 0)
+        {
+          target_flags &= ~(MASK_ALL_CPU_BITS);
+          target_flags |= MASK_SCORE7 | MASK_SCORE7D;
+          return true;
+        }
+      else
+        return false;
+
+    default:
+      return true;
+    }
+}
+
+/* We can always eliminate to the hard frame pointer.  We can eliminate
+   to the stack pointer unless a frame pointer is needed.  */
+
+static bool
+score_can_eliminate (const int from ATTRIBUTE_UNUSED, const int to)
+{
+  return (to == HARD_FRAME_POINTER_REGNUM
+          || (to  == STACK_POINTER_REGNUM && !frame_pointer_needed));
+}
+
+/* Argument support functions.  */
+
+/* Initialize CUMULATIVE_ARGS for a function.  */
+void
+score_init_cumulative_args (CUMULATIVE_ARGS *cum,
+                            tree fntype ATTRIBUTE_UNUSED,
+                            rtx libname ATTRIBUTE_UNUSED)
+{
+  memset (cum, 0, sizeof (CUMULATIVE_ARGS));
+}
+
+static void
 score_conditional_register_usage (void)
 {
    if (!flag_pic)