gdb/buildsym-legacy.c

   1 /* Legacy support routines for building symbol tables in GDB's internal format.
   2    Copyright (C) 1986-2022 Free Software Foundation, Inc.
   3
   4    This file is part of GDB.
   5
   6    This program is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as published by
   8    the Free Software Foundation; either version 3 of the License, or
   9    (at your option) any later version.
  10
  11    This program is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14    GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public License
  17    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  18
  19 #include "defs.h"
  20 #include "buildsym-legacy.h"
  21 #include "symtab.h"
  22
  23 /* The work-in-progress of the compunit we are building.
  24    This is created first, before any subfiles by start_compunit_symtab.  */
  25
  26 static struct buildsym_compunit *buildsym_compunit;
  27
  28 void
  29 record_debugformat (const char *format)
  30 {
  31   buildsym_compunit->record_debugformat (format);
  32 }
  33
  34 void
  35 record_producer (const char *producer)
  36 {
  37   buildsym_compunit->record_producer (producer);
  38 }
  39
  40 \f
  41
  42 /* See buildsym.h.  */
  43
  44 void
  45 set_last_source_file (const char *name)
  46 {
  47   gdb_assert (buildsym_compunit != nullptr || name == nullptr);
  48   if (buildsym_compunit != nullptr)
  49     buildsym_compunit->set_last_source_file (name);
  50 }
  51
  52 /* See buildsym.h.  */
  53
  54 const char *
  55 get_last_source_file ()
  56 {
  57   if (buildsym_compunit == nullptr)
  58     return nullptr;
  59   return buildsym_compunit->get_last_source_file ();
  60 }
  61
  62 /* See buildsym.h.  */
  63
  64 void
  65 set_last_source_start_addr (CORE_ADDR addr)
  66 {
  67   gdb_assert (buildsym_compunit != nullptr);
  68   buildsym_compunit->set_last_source_start_addr (addr);
  69 }
  70
  71 /* See buildsym.h.  */
  72
  73 CORE_ADDR
  74 get_last_source_start_addr ()
  75 {
  76   gdb_assert (buildsym_compunit != nullptr);
  77   return buildsym_compunit->get_last_source_start_addr ();
  78 }
  79
  80 /* See buildsym.h.  */
  81
  82 bool
  83 outermost_context_p ()
  84 {
  85   gdb_assert (buildsym_compunit != nullptr);
  86   return buildsym_compunit->outermost_context_p ();
  87 }
  88
  89 /* See buildsym.h.  */
  90
  91 int
  92 get_context_stack_depth ()
  93 {
  94   gdb_assert (buildsym_compunit != nullptr);
  95   return buildsym_compunit->get_context_stack_depth ();
  96 }
  97
  98 /* See buildsym.h.  */
  99
 100 struct subfile *
 101 get_current_subfile ()
 102 {
 103   gdb_assert (buildsym_compunit != nullptr);
 104   return buildsym_compunit->get_current_subfile ();
 105 }
 106
 107 /* See buildsym.h.  */
 108
 109 struct pending **
 110 get_local_symbols ()
 111 {
 112   gdb_assert (buildsym_compunit != nullptr);
 113   return buildsym_compunit->get_local_symbols ();
 114 }
 115
 116 /* See buildsym.h.  */
 117
 118 struct pending **
 119 get_file_symbols ()
 120 {
 121   gdb_assert (buildsym_compunit != nullptr);
 122   return buildsym_compunit->get_file_symbols ();
 123 }
 124
 125 /* See buildsym.h.  */
 126
 127 struct pending **
 128 get_global_symbols ()
 129 {
 130   gdb_assert (buildsym_compunit != nullptr);
 131   return buildsym_compunit->get_global_symbols ();
 132 }
 133
 134 void
 135 start_subfile (const char *name)
 136 {
 137   gdb_assert (buildsym_compunit != nullptr);
 138   buildsym_compunit->start_subfile (name);
 139 }
 140
 141 void
 142 patch_subfile_names (struct subfile *subfile, const char *name)
 143 {
 144   gdb_assert (buildsym_compunit != nullptr);
 145   buildsym_compunit->patch_subfile_names (subfile, name);
 146 }
 147
 148 void
 149 push_subfile ()
 150 {
 151   gdb_assert (buildsym_compunit != nullptr);
 152   buildsym_compunit->push_subfile ();
 153 }
 154
 155 const char *
 156 pop_subfile ()
 157 {
 158   gdb_assert (buildsym_compunit != nullptr);
 159   return buildsym_compunit->pop_subfile ();
 160 }
 161
 162 /* Delete the buildsym compunit.  */
 163
 164 static void
 165 free_buildsym_compunit (void)
 166 {
 167   if (buildsym_compunit == NULL)
 168     return;
 169   delete buildsym_compunit;
 170   buildsym_compunit = NULL;
 171 }
 172
 173 struct compunit_symtab *
 174 end_compunit_symtab (CORE_ADDR end_addr, int section)
 175 {
 176   gdb_assert (buildsym_compunit != nullptr);
 177   struct compunit_symtab *result
 178     = buildsym_compunit->end_compunit_symtab (end_addr, section);
 179   free_buildsym_compunit ();
 180   return result;
 181 }
 182
 183 struct context_stack *
 184 push_context (int desc, CORE_ADDR valu)
 185 {
 186   gdb_assert (buildsym_compunit != nullptr);
 187   return buildsym_compunit->push_context (desc, valu);
 188 }
 189
 190 struct context_stack
 191 pop_context ()
 192 {
 193   gdb_assert (buildsym_compunit != nullptr);
 194   return buildsym_compunit->pop_context ();
 195 }
 196
 197 struct block *
 198 finish_block (struct symbol *symbol, struct pending_block *old_blocks,
 199               const struct dynamic_prop *static_link,
 200               CORE_ADDR start, CORE_ADDR end)
 201 {
 202   gdb_assert (buildsym_compunit != nullptr);
 203   return buildsym_compunit->finish_block (symbol, old_blocks, static_link,
 204                                           start, end);
 205 }
 206
 207 void
 208 record_line (struct subfile *subfile, int line, CORE_ADDR pc)
 209 {
 210   gdb_assert (buildsym_compunit != nullptr);
 211   /* Assume every line entry is a statement start, that is a good place to
 212      put a breakpoint for that line number.  */
 213   buildsym_compunit->record_line (subfile, line, pc, LEF_IS_STMT);
 214 }
 215
 216 /* Start a new compunit_symtab for a new source file in OBJFILE.  Called, for
 217    example, when a stabs symbol of type N_SO is seen, or when a DWARF
 218    DW_TAG_compile_unit DIE is seen.  It indicates the start of data for one
 219    original source file.
 220
 221    NAME is the name of the file (cannot be NULL).  COMP_DIR is the
 222    directory in which the file was compiled (or NULL if not known).
 223    START_ADDR is the lowest address of objects in the file (or 0 if
 224    not known).  LANGUAGE is the language of the source file, or
 225    language_unknown if not known, in which case it'll be deduced from
 226    the filename.  */
 227
 228 struct compunit_symtab *
 229 start_compunit_symtab (struct objfile *objfile, const char *name,
 230                        const char *comp_dir, CORE_ADDR start_addr,
 231                        enum language language)
 232 {
 233   /* These should have been reset either by successful completion of building
 234      a symtab, or by the scoped_free_pendings destructor.  */
 235   gdb_assert (buildsym_compunit == nullptr);
 236
 237   buildsym_compunit = new struct buildsym_compunit (objfile, name, comp_dir,
 238                                                     language, start_addr);
 239
 240   return buildsym_compunit->get_compunit_symtab ();
 241 }
 242
 243 /* At end of reading syms, or in case of quit, ensure everything
 244    associated with building symtabs is freed.
 245
 246    N.B. This is *not* intended to be used when building psymtabs.  Some debug
 247    info readers call this anyway, which is harmless if confusing.  */
 248
 249 scoped_free_pendings::~scoped_free_pendings ()
 250 {
 251   free_buildsym_compunit ();
 252 }
 253
 254 /* See buildsym-legacy.h.  */
 255
 256 struct buildsym_compunit *
 257 get_buildsym_compunit ()
 258 {
 259   gdb_assert (buildsym_compunit != nullptr);
 260   return buildsym_compunit;
 261 }