1  /* Declarations for varasm.h.
       2     Copyright (C) 2013-2023 Free Software Foundation, Inc.
       3  
       4  This file is part of GCC.
       5  
       6  GCC is free software; you can redistribute it and/or modify it under
       7  the terms of the GNU General Public License as published by the Free
       8  Software Foundation; either version 3, or (at your option) any later
       9  version.
      10  
      11  GCC is distributed in the hope that it will be useful, but WITHOUT ANY
      12  WARRANTY; without even the implied warranty of MERCHANTABILITY or
      13  FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
      14  for more details.
      15  
      16  You should have received a copy of the GNU General Public License
      17  along with GCC; see the file COPYING3.  If not see
      18  <http://www.gnu.org/licenses/>.  */
      19  
      20  #ifndef GCC_VARASM_H
      21  #define GCC_VARASM_H
      22  
      23  /* The following global holds the "function name" for the code in the
      24     cold section of a function, if hot/cold function splitting is enabled
      25     and there was actually code that went into the cold section.  A
      26     pseudo function name is needed for the cold section of code for some
      27     debugging tools that perform symbolization. */
      28  extern tree cold_function_name;
      29  
      30  extern tree tree_output_constant_def (tree);
      31  extern void make_decl_rtl (tree);
      32  extern rtx make_decl_rtl_for_debug (tree);
      33  extern void make_decl_one_only (tree, tree);
      34  extern int supports_one_only (void);
      35  extern void resolve_unique_section (tree, int, int);
      36  extern void mark_referenced (tree);
      37  extern void mark_decl_referenced (tree);
      38  extern void notice_global_symbol (tree);
      39  extern void set_user_assembler_name (tree, const char *);
      40  extern void process_pending_assemble_externals (void);
      41  extern bool decl_replaceable_p (tree, bool);
      42  extern bool decl_binds_to_current_def_p (const_tree);
      43  extern enum tls_model decl_default_tls_model (const_tree);
      44  
      45  /* Declare DECL to be a weak symbol.  */
      46  extern void declare_weak (tree);
      47  
      48  /* Merge weak status.  */
      49  extern void merge_weak (tree, tree);
      50  
      51  /* Make one symbol an alias for another.  */
      52  extern void assemble_alias (tree, tree);
      53  
      54  /* Return nonzero if VALUE is a valid constant-valued expression
      55     for use in initializing a static variable; one that can be an
      56     element of a "constant" initializer.
      57  
      58     Return null_pointer_node if the value is absolute;
      59     if it is relocatable, return the variable that determines the relocation.
      60     We assume that VALUE has been folded as much as possible;
      61     therefore, we do not need to check for such things as
      62     arithmetic-combinations of integers.  */
      63  extern tree initializer_constant_valid_p (tree, tree, bool = false);
      64  
      65  /* Return true if VALUE is a valid constant-valued expression
      66     for use in initializing a static bit-field; one that can be
      67     an element of a "constant" initializer.  */
      68  extern bool initializer_constant_valid_for_bitfield_p (const_tree);
      69  
      70  /* Whether a constructor CTOR is a valid static constant initializer if all
      71     its elements are.  This used to be internal to initializer_constant_valid_p
      72     and has been exposed to let other functions like categorize_ctor_elements
      73     evaluate the property while walking a constructor for other purposes.  */
      74  extern bool constructor_static_from_elts_p (const_tree);
      75  
      76  extern void init_varasm_status (void);
      77  
      78  extern rtx assemble_static_space (unsigned HOST_WIDE_INT);
      79  
      80  extern rtx assemble_trampoline_template (void);
      81  
      82  extern void switch_to_comdat_section (section *, tree);
      83  
      84  #endif  // GCC_VARASM_H