gcc/config/nds32/nds32-intrinsic.c

   1 /* Intrinsic functions of Andes NDS32 cpu for GNU compiler
   2    Copyright (C) 2012-2015 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 "alias.h"
  28 #include "symtab.h"
  29 #include "tree.h"
  30 #include "stor-layout.h"
  31 #include "varasm.h"
  32 #include "calls.h"
  33 #include "rtl.h"
  34 #include "regs.h"
  35 #include "hard-reg-set.h"
  36 #include "insn-config.h"        /* Required by recog.h.  */
  37 #include "conditions.h"
  38 #include "output.h"
  39 #include "insn-attr.h"          /* For DFA state_t.  */
  40 #include "insn-codes.h"         /* For CODE_FOR_xxx.  */
  41 #include "reload.h"             /* For push_reload().  */
  42 #include "flags.h"
  43 #include "function.h"
  44 #include "insn-config.h"
  45 #include "expmed.h"
  46 #include "dojump.h"
  47 #include "explow.h"
  48 #include "emit-rtl.h"
  49 #include "stmt.h"
  50 #include "expr.h"
  51 #include "recog.h"
  52 #include "diagnostic-core.h"
  53 #include "dominance.h"
  54 #include "cfg.h"
  55 #include "cfgrtl.h"
  56 #include "cfganal.h"
  57 #include "lcm.h"
  58 #include "cfgbuild.h"
  59 #include "cfgcleanup.h"
  60 #include "predict.h"
  61 #include "basic-block.h"
  62 #include "df.h"
  63 #include "tm_p.h"
  64 #include "tm-constrs.h"
  65 #include "optabs.h"             /* For GEN_FCN.  */
  66 #include "target.h"
  67 #include "langhooks.h"          /* For add_builtin_function().  */
  68 #include "builtins.h"
  69
  70 /* ------------------------------------------------------------------------ */
  71
  72 /* Function to expand builtin function for
  73    '[(unspec_volatile [(reg)])]'.  */
  74 static rtx
  75 nds32_expand_builtin_null_ftype_reg (enum insn_code icode,
  76                                      tree exp, rtx target)
  77 {
  78   /* Mapping:
  79        ops[0] <--> value0 <--> arg0 */
  80   struct expand_operand ops[1];
  81   tree arg0;
  82   rtx value0;
  83
  84   /* Grab the incoming arguments and extract its rtx.  */
  85   arg0 = CALL_EXPR_ARG (exp, 0);
  86   value0 = expand_normal (arg0);
  87
  88   /* Create operands.  */
  89   create_input_operand (&ops[0], value0, TYPE_MODE (TREE_TYPE (arg0)));
  90
  91   /* Emit new instruction.  */
  92   if (!maybe_expand_insn (icode, 1, ops))
  93     error ("invalid argument to built-in function");
  94
  95   return target;
  96 }
  97
  98 /* Function to expand builtin function for
  99    '[(set (reg) (unspec_volatile [(imm)]))]'.  */
 100 static rtx
 101 nds32_expand_builtin_reg_ftype_imm (enum insn_code icode,
 102                                     tree exp, rtx target)
 103 {
 104   /* Mapping:
 105        ops[0] <--> target <--> exp
 106        ops[1] <--> value0 <--> arg0 */
 107   struct expand_operand ops[2];
 108   tree arg0;
 109   rtx value0;
 110
 111   /* Grab the incoming arguments and extract its rtx.  */
 112   arg0 = CALL_EXPR_ARG (exp, 0);
 113   value0 = expand_normal (arg0);
 114
 115   /* Create operands.  */
 116   create_output_operand (&ops[0], target, TYPE_MODE (TREE_TYPE (exp)));
 117   create_input_operand (&ops[1], value0, TYPE_MODE (TREE_TYPE (arg0)));
 118
 119   /* Emit new instruction.  */
 120   if (!maybe_expand_insn (icode, 2, ops))
 121     error ("invalid argument to built-in function");
 122
 123   return target;
 124 }
 125
 126 /* Function to expand builtin function for
 127    '[(unspec_volatile [(reg) (imm)])]' pattern.  */
 128 static rtx
 129 nds32_expand_builtin_null_ftype_reg_imm (enum insn_code icode,
 130                                          tree exp, rtx target)
 131 {
 132   /* Mapping:
 133        ops[0] <--> value0 <--> arg0
 134        ops[1] <--> value1 <--> arg1 */
 135   struct expand_operand ops[2];
 136   tree arg0, arg1;
 137   rtx value0, value1;
 138
 139   /* Grab the incoming arguments and extract its rtx.  */
 140   arg0 = CALL_EXPR_ARG (exp, 0);
 141   arg1 = CALL_EXPR_ARG (exp, 1);
 142   value0 = expand_normal (arg0);
 143   value1 = expand_normal (arg1);
 144
 145   /* Create operands.  */
 146   create_input_operand (&ops[0], value0, TYPE_MODE (TREE_TYPE (arg0)));
 147   create_input_operand (&ops[1], value1, TYPE_MODE (TREE_TYPE (arg1)));
 148
 149   /* Emit new instruction.  */
 150   if (!maybe_expand_insn (icode, 2, ops))
 151     error ("invalid argument to built-in function");
 152
 153   return target;
 154 }
 155
 156 /* ------------------------------------------------------------------------ */
 157
 158 void
 159 nds32_init_builtins_impl (void)
 160 {
 161   tree pointer_type_node  = build_pointer_type (integer_type_node);
 162
 163   tree void_ftype_void    = build_function_type (void_type_node,
 164                                                  void_list_node);
 165
 166   tree void_ftype_pint    = build_function_type_list (void_type_node,
 167                                                       pointer_type_node,
 168                                                       NULL_TREE);
 169
 170   tree int_ftype_int      = build_function_type_list (integer_type_node,
 171                                                       integer_type_node,
 172                                                       NULL_TREE);
 173
 174   tree void_ftype_int_int = build_function_type_list (void_type_node,
 175                                                       integer_type_node,
 176                                                       integer_type_node,
 177                                                       NULL_TREE);
 178
 179   /* Cache.  */
 180   add_builtin_function ("__builtin_nds32_isync",  void_ftype_pint,
 181                         NDS32_BUILTIN_ISYNC,
 182                         BUILT_IN_MD, NULL, NULL_TREE);
 183   add_builtin_function ("__builtin_nds32_isb",  void_ftype_void,
 184                         NDS32_BUILTIN_ISB,
 185                         BUILT_IN_MD, NULL, NULL_TREE);
 186
 187   /* Register Transfer.  */
 188   add_builtin_function ("__builtin_nds32_mfsr",  int_ftype_int,
 189                         NDS32_BUILTIN_MFSR,
 190                         BUILT_IN_MD, NULL, NULL_TREE);
 191   add_builtin_function ("__builtin_nds32_mfusr", int_ftype_int,
 192                         NDS32_BUILTIN_MFUSR,
 193                         BUILT_IN_MD, NULL, NULL_TREE);
 194   add_builtin_function ("__builtin_nds32_mtsr",  void_ftype_int_int,
 195                         NDS32_BUILTIN_MTSR,
 196                         BUILT_IN_MD, NULL, NULL_TREE);
 197   add_builtin_function ("__builtin_nds32_mtusr", void_ftype_int_int,
 198                         NDS32_BUILTIN_MTUSR,
 199                         BUILT_IN_MD, NULL, NULL_TREE);
 200
 201   /* Interrupt.  */
 202   add_builtin_function ("__builtin_nds32_setgie_en",  void_ftype_void,
 203                         NDS32_BUILTIN_SETGIE_EN,
 204                         BUILT_IN_MD, NULL, NULL_TREE);
 205   add_builtin_function ("__builtin_nds32_setgie_dis", void_ftype_void,
 206                         NDS32_BUILTIN_SETGIE_DIS,
 207                         BUILT_IN_MD, NULL, NULL_TREE);
 208 }
 209
 210
 211 rtx
 212 nds32_expand_builtin_impl (tree exp,
 213                            rtx target,
 214                            rtx subtarget ATTRIBUTE_UNUSED,
 215                            machine_mode mode ATTRIBUTE_UNUSED,
 216                            int ignore ATTRIBUTE_UNUSED)
 217 {
 218   tree fndecl = TREE_OPERAND (CALL_EXPR_FN (exp), 0);
 219
 220   int fcode = DECL_FUNCTION_CODE (fndecl);
 221
 222   switch (fcode)
 223     {
 224     /* Cache.  */
 225     case NDS32_BUILTIN_ISYNC:
 226       return nds32_expand_builtin_null_ftype_reg
 227              (CODE_FOR_unspec_volatile_isync, exp, target);
 228     case NDS32_BUILTIN_ISB:
 229       /* Since there are no result and operands for isb instruciton,
 230          we can simply emit this rtx.  */
 231       emit_insn (gen_unspec_volatile_isb ());
 232       return target;
 233
 234     /* Register Transfer.  */
 235     case NDS32_BUILTIN_MFSR:
 236       return nds32_expand_builtin_reg_ftype_imm
 237              (CODE_FOR_unspec_volatile_mfsr, exp, target);
 238     case NDS32_BUILTIN_MFUSR:
 239       return nds32_expand_builtin_reg_ftype_imm
 240              (CODE_FOR_unspec_volatile_mfusr, exp, target);
 241     case NDS32_BUILTIN_MTSR:
 242       return nds32_expand_builtin_null_ftype_reg_imm
 243              (CODE_FOR_unspec_volatile_mtsr, exp, target);
 244     case NDS32_BUILTIN_MTUSR:
 245       return nds32_expand_builtin_null_ftype_reg_imm
 246              (CODE_FOR_unspec_volatile_mtusr, exp, target);
 247
 248     /* Interrupt.  */
 249     case NDS32_BUILTIN_SETGIE_EN:
 250       /* Since there are no result and operands for setgie.e instruciton,
 251          we can simply emit this rtx.  */
 252       emit_insn (gen_unspec_volatile_setgie_en ());
 253       return target;
 254     case NDS32_BUILTIN_SETGIE_DIS:
 255       /* Since there are no result and operands for setgie.d instruciton,
 256          we can simply emit this rtx.  */
 257       emit_insn (gen_unspec_volatile_setgie_dis ());
 258       return target;
 259
 260     default:
 261       gcc_unreachable ();
 262     }
 263
 264   return NULL_RTX;
 265 }
 266
 267 /* ------------------------------------------------------------------------ */