gcc/config/riscv/riscv-subset.h

   1 /* Definition of data structure of RISC-V subset for GNU compiler.
   2    Copyright (C) 2011-2024 Free Software Foundation, Inc.
   3    Contributed by Andrew Waterman (andrew@sifive.com).
   4    Based on MIPS target for GNU compiler.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef GCC_RISCV_SUBSET_H
  23 #define GCC_RISCV_SUBSET_H
  24
  25 #define RISCV_DONT_CARE_VERSION -1
  26
  27 /* Subset info.  */
  28 struct riscv_subset_t
  29 {
  30   riscv_subset_t ();
  31
  32   std::string name;
  33   int major_version;
  34   int minor_version;
  35   struct riscv_subset_t *next;
  36
  37   bool explicit_version_p;
  38   bool implied_p;
  39 };
  40
  41 /* Subset list.  */
  42 class riscv_subset_list
  43 {
  44 public:
  45   /* Because the parse method is called in several places, to prevent repeated
  46      errors, use this flag to prevent it from repeating parse. */
  47   static bool parse_failed;
  48
  49 private:
  50   /* Original arch string.  */
  51   const char *m_arch;
  52
  53   /* Location of arch string, used for report error.  */
  54   location_t m_loc;
  55
  56   /* Head of subset info list.  */
  57   riscv_subset_t *m_head;
  58
  59   /* Tail of subset info list.  */
  60   riscv_subset_t *m_tail;
  61
  62   /* X-len of m_arch. */
  63   unsigned m_xlen;
  64
  65   /* Number of subsets. */
  66   unsigned m_subset_num;
  67
  68   /* Allow adding the same extension more than once.  */
  69   bool m_allow_adding_dup;
  70
  71   riscv_subset_list (const char *, location_t);
  72
  73   const char *parsing_subset_version (const char *, const char *, unsigned *,
  74                                       unsigned *, bool, bool *);
  75
  76   const char *parse_base_ext (const char *);
  77
  78   const char *parse_single_std_ext (const char *, bool);
  79
  80   const char *parse_single_multiletter_ext (const char *, const char *,
  81                                             const char *, bool);
  82
  83   void handle_implied_ext (const char *);
  84   bool check_implied_ext ();
  85   void handle_combine_ext ();
  86   void check_conflict_ext ();
  87
  88 public:
  89   ~riscv_subset_list ();
  90
  91   void add (const char *, int, int, bool, bool);
  92
  93   void add (const char *, bool);
  94
  95   riscv_subset_t *lookup (const char *,
  96                           int major_version = RISCV_DONT_CARE_VERSION,
  97                           int minor_version = RISCV_DONT_CARE_VERSION) const;
  98
  99   std::string to_string (bool) const;
 100
 101   unsigned xlen () const {return m_xlen;};
 102
 103   riscv_subset_list *clone () const;
 104
 105   static riscv_subset_list *parse (const char *, location_t);
 106   const char *parse_single_ext (const char *, bool exact_single_p = true);
 107
 108   const riscv_subset_t *begin () const {return m_head;};
 109   const riscv_subset_t *end () const {return NULL;};
 110
 111   int match_score (riscv_subset_list *) const;
 112
 113   void set_loc (location_t);
 114
 115   void set_allow_adding_dup (bool v) { m_allow_adding_dup = v; }
 116
 117   void finalize ();
 118 };
 119
 120 extern const riscv_subset_list *riscv_cmdline_subset_list (void);
 121 extern void
 122 riscv_set_arch_by_subset_list (riscv_subset_list *, struct gcc_options *);
 123
 124 #endif /* ! GCC_RISCV_SUBSET_H */