1  /* Definition of data structure of RISC-V subset for GNU compiler.
       2     Copyright (C) 2011-2023 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  private:
      45    /* Original arch string.  */
      46    const char *m_arch;
      47  
      48    /* Location of arch string, used for report error.  */
      49    location_t m_loc;
      50  
      51    /* Head of subset info list.  */
      52    riscv_subset_t *m_head;
      53  
      54    /* Tail of subset info list.  */
      55    riscv_subset_t *m_tail;
      56  
      57    /* X-len of m_arch. */
      58    unsigned m_xlen;
      59  
      60    riscv_subset_list (const char *, location_t);
      61  
      62    const char *parsing_subset_version (const char *, const char *, unsigned *,
      63  				      unsigned *, bool, bool *);
      64  
      65    const char *parse_std_ext (const char *);
      66  
      67    const char *parse_multiletter_ext (const char *, const char *,
      68  				     const char *);
      69  
      70    void handle_implied_ext (riscv_subset_t *);
      71    void handle_combine_ext ();
      72  
      73  public:
      74    ~riscv_subset_list ();
      75  
      76    void add (const char *, int, int, bool, bool);
      77  
      78    void add (const char *, bool);
      79  
      80    riscv_subset_t *lookup (const char *,
      81  			  int major_version = RISCV_DONT_CARE_VERSION,
      82  			  int minor_version = RISCV_DONT_CARE_VERSION) const;
      83  
      84    std::string to_string (bool) const;
      85  
      86    unsigned xlen () const {return m_xlen;};
      87  
      88    static riscv_subset_list *parse (const char *, location_t);
      89  
      90    const riscv_subset_t *begin () const {return m_head;};
      91    const riscv_subset_t *end () const {return NULL;};
      92  
      93    int match_score (riscv_subset_list *) const;
      94  };
      95  
      96  extern const riscv_subset_list *riscv_current_subset_list (void);
      97  
      98  #endif /* ! GCC_RISCV_SUBSET_H */