gcc/lto/lto.h

   1 /* LTO declarations.
   2    Copyright (C) 2009-2021 Free Software Foundation, Inc.
   3    Contributed by CodeSourcery, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 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 #ifndef LTO_H
  22 #define LTO_H
  23
  24
  25 /* A file.  */
  26 struct lto_file
  27 {
  28   /* The name of the file.  */
  29   const char *filename;
  30   /* The offset for the object inside an ar archive file (or zero).  */
  31   off_t offset;
  32 };
  33
  34 /* In lto-lang.c  */
  35 extern const char *resolution_file_name;
  36
  37 /* In lto.c  */
  38 extern tree lto_eh_personality (void);
  39 extern void lto_main (void);
  40 extern void lto_read_all_file_options (void);
  41
  42 /* In lto-elf.c or lto-coff.c  */
  43 extern lto_file *lto_obj_file_open (const char *filename, bool writable);
  44 extern void lto_obj_file_close (lto_file *file);
  45 struct lto_section_list;
  46 extern htab_t lto_obj_build_section_table (lto_file *file, struct lto_section_list *list);
  47 extern htab_t lto_obj_create_section_hash_table (void);
  48 extern void lto_obj_begin_section (const char *name);
  49 extern void lto_obj_append_data (const void *data, size_t len, void *block);
  50 extern void lto_obj_end_section (void);
  51 extern lto_file *lto_set_current_out_file (lto_file *file);
  52 extern lto_file *lto_get_current_out_file (void);
  53
  54 extern int lto_link_dump_id, decl_merge_dump_id, partition_dump_id;
  55
  56 /* Hash table entry to hold the start offset and length of an LTO
  57    section in a .o file.  */
  58 struct lto_section_slot
  59 {
  60   const char *name;
  61   intptr_t start;
  62   size_t len;
  63   struct lto_section_slot *next;
  64 };
  65
  66 /* A list of section slots */
  67 struct lto_section_list
  68 {
  69   struct lto_section_slot *first, *last;
  70 };
  71
  72 extern unsigned int lto_option_lang_mask (void);
  73
  74 #endif /* LTO_H */