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