gcc/config/nds32/nds32-intrinsic.c

   1 /* Intrinsic functions of Andes NDS32 cpu for GNU compiler
   2    Copyright (C) 2012-2014 Free Software Foundation, Inc.
   3    Contributed by Andes Technology Corporation.
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published
   9    by the Free Software Foundation; either version 3, or (at your
  10    option) any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GCC; see the file COPYING3.  If not see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21 /* ------------------------------------------------------------------------ */
  22
  23 #include "config.h"
  24 #include "system.h"
  25 #include "coretypes.h"
  26 #include "tm.h"
  27 #include "tree.h"
  28 #include "stor-layout.h"
  29 #include "varasm.h"
  30 #include "calls.h"
  31 #include "rtl.h"
  32 #include "regs.h"
  33 #include "hard-reg-set.h"
  34 #include "insn-config.h"        /* Required by recog.h.  */
  35 #include "conditions.h"
  36 #include "output.h"
  37 #include "insn-attr.h"          /* For DFA state_t.  */
  38 #include "insn-codes.h"         /* For CODE_FOR_xxx.  */
  39 #include "reload.h"             /* For push_reload().  */
  40 #include "flags.h"
  41 #include "hashtab.h"
  42 #include "hash-set.h"
  43 #include "vec.h"
  44 #include "machmode.h"
  45 #include "input.h"
  46 #include "function.h"
  47 #include "expr.h"
  48 #include "recog.h"
  49 #include "diagnostic-core.h"
  50 #include "dominance.h"
  51 #include "cfg.h"
  52 #include "cfgrtl.h"
  53 #include "cfganal.h"
  54 #include "lcm.h"
  55 #include "cfgbuild.h"
  56 #include "cfgcleanup.h"
  57 #include "predict.h"
  58 #include "basic-block.h"
  59 #include "df.h"
  60 #include "tm_p.h"
  61 #include "tm-constrs.h"
  62 #include "optabs.h"             /* For GEN_FCN.  */
  63 #include "target.h"
  64 #include "target-def.h"
  65 #include "langhooks.h"          /* For add_builtin_function().  */
  66 #include "ggc.h"
  67 #include "builtins.h"
  68
  69 /* ------------------------------------------------------------------------ */
  70
  71 /* Function to expand builtin function for
  72    '[(unspec_volatile [(reg)])]'.  */
  73 static rtx
  74 nds32_expand_builtin_null_ftype_reg (enum insn_code icode,
  75                                      tree exp, rtx target)
  76 {
  77   /* Mapping:
  78        ops[0] <--> value0 <--> arg0 */
  79   struct expand_operand ops[1];
  80   tree arg0;
  81   rtx value0;
  82
  83   /* Grab the incoming arguments and extract its rtx.  */
  84   arg0 = CALL_EXPR_ARG (exp, 0);
  85   value0 = expand_normal (arg0);
  86
  87   /* Create operands.  */
  88   create_input_operand (&ops[0], value0, TYPE_MODE (TREE_TYPE (arg0)));
  89
  90   /* Emit new instruction.  */
  91   if (!maybe_expand_insn (icode, 1, ops))
  92     error ("invalid argument to built-in function");
  93
  94   return target;
  95 }
  96
  97 /* Function to expand builtin function for
  98    '[(set (reg) (unspec_volatile [(imm)]))]'.  */
  99 static rtx
 100 nds32_expand_builtin_reg_ftype_imm (enum insn_code icode,
 101                                     tree exp, rtx target)
 102 {
 103   /* Mapping:
 104        ops[0] <--> target <--> exp
 105        ops[1] <--> value0 <--> arg0 */
 106   struct expand_operand ops[2];
 107   tree arg0;
 108   rtx value0;
 109
 110   /* Grab the incoming arguments and extract its rtx.  */
 111   arg0 = CALL_EXPR_ARG (exp, 0);
 112   value0 = expand_normal (arg0);
 113
 114   /* Create operands.  */
 115   create_output_operand (&ops[0], target, TYPE_MODE (TREE_TYPE (exp)));
 116   create_input_operand (&ops[1], value0, TYPE_MODE (TREE_TYPE (arg0)));
 117
 118   /* Emit new instruction.  */
 119   if (!maybe_expand_insn (icode, 2, ops))
 120     error ("invalid argument to built-in function");
 121
 122   return target;
 123 }
 124
 125 /* Function to expand builtin function for
 126    '[(unspec_volatile [(reg) (imm)])]' pattern.  */
 127 static rtx
 128 nds32_expand_builtin_null_ftype_reg_imm (enum insn_code icode,
 129                                          tree exp, rtx target)
 130 {
 131   /* Mapping:
 132        ops[0] <--> value0 <--> arg0
 133        ops[1] <--> value1 <--> arg1 */
 134   struct expand_operand ops[2];
 135   tree arg0, arg1;
 136   rtx value0, value1;
 137
 138   /* Grab the incoming arguments and extract its rtx.  */
 139   arg0 = CALL_EXPR_ARG (exp, 0);
 140   arg1 = CALL_EXPR_ARG (exp, 1);
 141   value0 = expand_normal (arg0);
 142   value1 = expand_normal (arg1);
 143
 144   /* Create operands.  */
 145   create_input_operand (&ops[0], value0, TYPE_MODE (TREE_TYPE (arg0)));
 146   create_input_operand (&ops[1], value1, TYPE_MODE (TREE_TYPE (arg1)));
 147
 148   /* Emit new instruction.  */
 149   if (!maybe_expand_insn (icode, 2, ops))
 150     error ("invalid argument to built-in function");
 151
 152   return target;
 153 }
 154
 155 /* ------------------------------------------------------------------------ */
 156
 157 void
 158 nds32_init_builtins_impl (void)
 159 {
 160   tree pointer_type_node  = build_pointer_type (integer_type_node);
 161
 162   tree void_ftype_void    = build_function_type (void_type_node,
 163                                                  void_list_node);
 164
 165   tree void_ftype_pint    = build_function_type_list (void_type_node,
 166                                                       pointer_type_node,
 167                                                       NULL_TREE);
 168
 169   tree int_ftype_int      = build_function_type_list (integer_type_node,
 170                                                       integer_type_node,
 171                                                       NULL_TREE);
 172
 173   tree void_ftype_int_int = build_function_type_list (void_type_node,
 174                                                       integer_type_node,
 175                                                       integer_type_node,
 176                                                       NULL_TREE);
 177
 178   /* Cache.  */
 179   add_builtin_function ("__builtin_nds32_isync",  void_ftype_pint,
 180                         NDS32_BUILTIN_ISYNC,
 181                         BUILT_IN_MD, NULL, NULL_TREE);
 182   add_builtin_function ("__builtin_nds32_isb",  void_ftype_void,
 183                         NDS32_BUILTIN_ISB,
 184                         BUILT_IN_MD, NULL, NULL_TREE);
 185
 186   /* Register Transfer.  */
 187   add_builtin_function ("__builtin_nds32_mfsr",  int_ftype_int,
 188                         NDS32_BUILTIN_MFSR,
 189                         BUILT_IN_MD, NULL, NULL_TREE);
 190   add_builtin_function ("__builtin_nds32_mfusr", int_ftype_int,
 191                         NDS32_BUILTIN_MFUSR,
 192                         BUILT_IN_MD, NULL, NULL_TREE);
 193   add_builtin_function ("__builtin_nds32_mtsr",  void_ftype_int_int,
 194                         NDS32_BUILTIN_MTSR,
 195                         BUILT_IN_MD, NULL, NULL_TREE);
 196   add_builtin_function ("__builtin_nds32_mtusr", void_ftype_int_int,
 197                         NDS32_BUILTIN_MTUSR,
 198                         BUILT_IN_MD, NULL, NULL_TREE);
 199
 200   /* Interrupt.  */
 201   add_builtin_function ("__builtin_nds32_setgie_en",  void_ftype_void,
 202                         NDS32_BUILTIN_SETGIE_EN,
 203                         BUILT_IN_MD, NULL, NULL_TREE);
 204   add_builtin_function ("__builtin_nds32_setgie_dis", void_ftype_void,
 205                         NDS32_BUILTIN_SETGIE_DIS,
 206                         BUILT_IN_MD, NULL, NULL_TREE);
 207 }
 208
 209
 210 rtx
 211 nds32_expand_builtin_impl (tree exp,
 212                            rtx target,
 213                            rtx subtarget ATTRIBUTE_UNUSED,
 214                            machine_mode mode ATTRIBUTE_UNUSED,
 215                            int ignore ATTRIBUTE_UNUSED)
 216 {
 217   tree fndecl = TREE_OPERAND (CALL_EXPR_FN (exp), 0);
 218
 219   int fcode = DECL_FUNCTION_CODE (fndecl);
 220
 221   switch (fcode)
 222     {
 223     /* Cache.  */
 224     case NDS32_BUILTIN_ISYNC:
 225       return nds32_expand_builtin_null_ftype_reg
 226              (CODE_FOR_unspec_volatile_isync, exp, target);
 227     case NDS32_BUILTIN_ISB:
 228       /* Since there are no result and operands for isb instruciton,
 229          we can simply emit this rtx.  */
 230       emit_insn (gen_unspec_volatile_isb ());
 231       return target;
 232
 233     /* Register Transfer.  */
 234     case NDS32_BUILTIN_MFSR:
 235       return nds32_expand_builtin_reg_ftype_imm
 236              (CODE_FOR_unspec_volatile_mfsr, exp, target);
 237     case NDS32_BUILTIN_MFUSR:
 238       return nds32_expand_builtin_reg_ftype_imm
 239              (CODE_FOR_unspec_volatile_mfusr, exp, target);
 240     case NDS32_BUILTIN_MTSR:
 241       return nds32_expand_builtin_null_ftype_reg_imm
 242              (CODE_FOR_unspec_volatile_mtsr, exp, target);
 243     case NDS32_BUILTIN_MTUSR:
 244       return nds32_expand_builtin_null_ftype_reg_imm
 245              (CODE_FOR_unspec_volatile_mtusr, exp, target);
 246
 247     /* Interrupt.  */
 248     case NDS32_BUILTIN_SETGIE_EN:
 249       /* Since there are no result and operands for setgie.e instruciton,
 250          we can simply emit this rtx.  */
 251       emit_insn (gen_unspec_volatile_setgie_en ());
 252       return target;
 253     case NDS32_BUILTIN_SETGIE_DIS:
 254       /* Since there are no result and operands for setgie.d instruciton,
 255          we can simply emit this rtx.  */
 256       emit_insn (gen_unspec_volatile_setgie_dis ());
 257       return target;
 258
 259     default:
 260       gcc_unreachable ();
 261     }
 262
 263   return NULL_RTX;
 264 }
 265
 266 /* ------------------------------------------------------------------------ */