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