gcc/ada/osint-c.adb

   1 ------------------------------------------------------------------------------
   2 --                                                                          --
   3 --                         GNAT COMPILER COMPONENTS                         --
   4 --                                                                          --
   5 --                              O S I N T - C                               --
   6 --                                                                          --
   7 --                                 B o d y                                  --
   8 --                                                                          --
   9 --          Copyright (C) 2001-2008, Free Software Foundation, Inc.         --
  10 --                                                                          --
  11 -- GNAT is free software;  you can  redistribute it  and/or modify it under --
  12 -- terms of the  GNU General Public License as published  by the Free Soft- --
  13 -- ware  Foundation;  either version 3,  or (at your option) any later ver- --
  14 -- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
  15 -- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
  16 -- or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License --
  17 -- for  more details.  You should have  received  a copy of the GNU General --
  18 -- Public License  distributed with GNAT; see file COPYING3.  If not, go to --
  19 -- http://www.gnu.org/licenses for a complete copy of the license.          --
  20 --                                                                          --
  21 -- GNAT was originally developed  by the GNAT team at  New York University. --
  22 -- Extensive contributions were provided by Ada Core Technologies Inc.      --
  23 --                                                                          --
  24 ------------------------------------------------------------------------------
  25
  26 with Hostparm;
  27 with Opt;      use Opt;
  28 with Tree_IO;  use Tree_IO;
  29
  30 package body Osint.C is
  31
  32    Output_Object_File_Name : String_Ptr;
  33    --  Argument of -o compiler option, if given. This is needed to verify
  34    --  consistency with the ALI file name.
  35
  36    procedure Adjust_OS_Resource_Limits;
  37    pragma Import (C, Adjust_OS_Resource_Limits,
  38                   "__gnat_adjust_os_resource_limits");
  39    --  Procedure to make system specific adjustments to make GNAT run better
  40
  41    function Create_Auxiliary_File
  42      (Src    : File_Name_Type;
  43       Suffix : String) return File_Name_Type;
  44    --  Common processing for Create_List_File, Create_Repinfo_File and
  45    --  Create_Debug_File. Src is the file name used to create the required
  46    --  output file and Suffix is the desired suffix (dg/rep/xxx for debug/
  47    --  repinfo/list file where xxx is specified extension.
  48
  49    procedure Set_Library_Info_Name;
  50    --  Sets a default ALI file name from the main compiler source name.
  51    --  This is used by Create_Output_Library_Info, and by the version of
  52    --  Read_Library_Info that takes a default file name. The name is in
  53    --  Name_Buffer (with length in Name_Len) on return from the call.
  54
  55    ----------------------
  56    -- Close_Debug_File --
  57    ----------------------
  58
  59    procedure Close_Debug_File is
  60       Status : Boolean;
  61
  62    begin
  63       Close (Output_FD, Status);
  64
  65       if not Status then
  66          Fail
  67            ("error while closing expanded source file ",
  68             Get_Name_String (Output_File_Name));
  69       end if;
  70    end Close_Debug_File;
  71
  72    ---------------------
  73    -- Close_List_File --
  74    ---------------------
  75
  76    procedure Close_List_File is
  77       Status : Boolean;
  78
  79    begin
  80       Close (Output_FD, Status);
  81
  82       if not Status then
  83          Fail
  84            ("error while closing list file ",
  85             Get_Name_String (Output_File_Name));
  86       end if;
  87    end Close_List_File;
  88
  89    -------------------------------
  90    -- Close_Output_Library_Info --
  91    -------------------------------
  92
  93    procedure Close_Output_Library_Info is
  94       Status : Boolean;
  95
  96    begin
  97       Close (Output_FD, Status);
  98
  99       if not Status then
 100          Fail
 101            ("error while closing ALI file ",
 102             Get_Name_String (Output_File_Name));
 103       end if;
 104    end Close_Output_Library_Info;
 105
 106    ------------------------
 107    -- Close_Repinfo_File --
 108    ------------------------
 109
 110    procedure Close_Repinfo_File is
 111       Status : Boolean;
 112
 113    begin
 114       Close (Output_FD, Status);
 115
 116       if not Status then
 117          Fail
 118            ("error while closing representation info file ",
 119             Get_Name_String (Output_File_Name));
 120       end if;
 121    end Close_Repinfo_File;
 122
 123    ---------------------------
 124    -- Create_Auxiliary_File --
 125    ---------------------------
 126
 127    function Create_Auxiliary_File
 128      (Src    : File_Name_Type;
 129       Suffix : String) return File_Name_Type
 130    is
 131       Result : File_Name_Type;
 132
 133    begin
 134       Get_Name_String (Src);
 135
 136       if Hostparm.OpenVMS then
 137          Name_Buffer (Name_Len + 1) := '_';
 138       else
 139          Name_Buffer (Name_Len + 1) := '.';
 140       end if;
 141
 142       Name_Len := Name_Len + 1;
 143       Name_Buffer (Name_Len + 1 .. Name_Len + Suffix'Length) := Suffix;
 144       Name_Len := Name_Len + Suffix'Length;
 145
 146       if Output_Object_File_Name /= null then
 147          for Index in reverse Output_Object_File_Name'Range loop
 148             if Output_Object_File_Name (Index) = Directory_Separator then
 149                declare
 150                   File_Name : constant String := Name_Buffer (1 .. Name_Len);
 151                begin
 152                   Name_Len := Index - Output_Object_File_Name'First + 1;
 153                   Name_Buffer (1 .. Name_Len) :=
 154                     Output_Object_File_Name
 155                       (Output_Object_File_Name'First .. Index);
 156                   Name_Buffer (Name_Len + 1 .. Name_Len + File_Name'Length) :=
 157                     File_Name;
 158                   Name_Len := Name_Len + File_Name'Length;
 159                end;
 160
 161                exit;
 162             end if;
 163          end loop;
 164       end if;
 165
 166       Result := Name_Find;
 167       Name_Buffer (Name_Len + 1) := ASCII.NUL;
 168       Create_File_And_Check (Output_FD, Text);
 169       return Result;
 170    end Create_Auxiliary_File;
 171
 172    -----------------------
 173    -- Create_Debug_File --
 174    -----------------------
 175
 176    function Create_Debug_File (Src : File_Name_Type) return File_Name_Type is
 177    begin
 178       return Create_Auxiliary_File (Src, "dg");
 179    end Create_Debug_File;
 180
 181    ----------------------
 182    -- Create_List_File --
 183    ----------------------
 184
 185    procedure Create_List_File (S : String) is
 186       F : File_Name_Type;
 187       pragma Warnings (Off, F);
 188    begin
 189       if S (S'First) = '.' then
 190          F := Create_Auxiliary_File (Current_Main, S (S'First + 1 .. S'Last));
 191
 192       else
 193          Name_Buffer (1 .. S'Length) := S;
 194          Name_Len := S'Length + 1;
 195          Name_Buffer (Name_Len) := ASCII.NUL;
 196          Create_File_And_Check (Output_FD, Text);
 197       end if;
 198    end Create_List_File;
 199
 200    --------------------------------
 201    -- Create_Output_Library_Info --
 202    --------------------------------
 203
 204    procedure Create_Output_Library_Info is
 205    begin
 206       Set_Library_Info_Name;
 207       Create_File_And_Check (Output_FD, Text);
 208    end Create_Output_Library_Info;
 209
 210    -------------------------
 211    -- Create_Repinfo_File --
 212    -------------------------
 213
 214    procedure Create_Repinfo_File (Src : String) is
 215       Discard : File_Name_Type;
 216       pragma Warnings (Off, Discard);
 217    begin
 218       Name_Buffer (1 .. Src'Length) := Src;
 219       Name_Len := Src'Length;
 220       Discard := Create_Auxiliary_File (Name_Find, "rep");
 221       return;
 222    end Create_Repinfo_File;
 223
 224    ---------------------------
 225    -- Debug_File_Eol_Length --
 226    ---------------------------
 227
 228    function Debug_File_Eol_Length return Nat is
 229    begin
 230       --  There has to be a cleaner way to do this! ???
 231
 232       if Directory_Separator = '/' then
 233          return 1;
 234       else
 235          return 2;
 236       end if;
 237    end Debug_File_Eol_Length;
 238
 239    -----------------------
 240    -- More_Source_Files --
 241    -----------------------
 242
 243    function More_Source_Files return Boolean renames More_Files;
 244
 245    ----------------------
 246    -- Next_Main_Source --
 247    ----------------------
 248
 249    function Next_Main_Source return File_Name_Type renames Next_Main_File;
 250
 251    -----------------------
 252    -- Read_Library_Info --
 253    -----------------------
 254
 255    --  Version with default file name
 256
 257    procedure Read_Library_Info
 258      (Name : out File_Name_Type;
 259       Text : out Text_Buffer_Ptr)
 260    is
 261    begin
 262       Set_Library_Info_Name;
 263       Name := Name_Find;
 264       Text := Read_Library_Info (Name, Fatal_Err => False);
 265    end Read_Library_Info;
 266
 267    ---------------------------
 268    -- Set_Library_Info_Name --
 269    ---------------------------
 270
 271    procedure Set_Library_Info_Name is
 272       Dot_Index : Natural;
 273
 274    begin
 275       Get_Name_String (Current_Main);
 276
 277       --  Find last dot since we replace the existing extension by .ali. The
 278       --  initialization to Name_Len + 1 provides for simply adding the .ali
 279       --  extension if the source file name has no extension.
 280
 281       Dot_Index := Name_Len + 1;
 282
 283       for J in reverse 1 .. Name_Len loop
 284          if Name_Buffer (J) = '.' then
 285             Dot_Index := J;
 286             exit;
 287          end if;
 288       end loop;
 289
 290       --  Make sure that the output file name matches the source file name.
 291       --  To compare them, remove file name directories and extensions.
 292
 293       if Output_Object_File_Name /= null then
 294
 295          --  Make sure there is a dot at Dot_Index. This may not be the case
 296          --  if the source file name has no extension.
 297
 298          Name_Buffer (Dot_Index) := '.';
 299
 300          --  If we are in multiple unit per file mode, then add ~nnn
 301          --  extension to the name before doing the comparison.
 302
 303          if Multiple_Unit_Index /= 0 then
 304             declare
 305                Exten : constant String := Name_Buffer (Dot_Index .. Name_Len);
 306             begin
 307                Name_Len := Dot_Index - 1;
 308                Add_Char_To_Name_Buffer (Multi_Unit_Index_Character);
 309                Add_Nat_To_Name_Buffer (Multiple_Unit_Index);
 310                Dot_Index := Name_Len + 1;
 311                Add_Str_To_Name_Buffer (Exten);
 312             end;
 313          end if;
 314
 315          --  Remove extension preparing to replace it
 316
 317          declare
 318             Name  : String  := Name_Buffer (1 .. Dot_Index);
 319             First : Positive;
 320
 321          begin
 322             Name_Buffer (1 .. Output_Object_File_Name'Length) :=
 323               Output_Object_File_Name.all;
 324
 325             --  Put two names in canonical case, to allow object file names
 326             --  with upper-case letters on Windows.
 327
 328             Canonical_Case_File_Name (Name);
 329             Canonical_Case_File_Name
 330               (Name_Buffer (1 .. Output_Object_File_Name'Length));
 331
 332             Dot_Index := 0;
 333             for J in reverse Output_Object_File_Name'Range loop
 334                if Name_Buffer (J) = '.' then
 335                   Dot_Index := J;
 336                   exit;
 337                end if;
 338             end loop;
 339
 340             --  Dot_Index should not be zero now (we check for extension
 341             --  elsewhere).
 342
 343             pragma Assert (Dot_Index /= 0);
 344
 345             --  Look for first character of file name
 346
 347             First := Dot_Index;
 348             while First > 1
 349               and then Name_Buffer (First - 1) /= Directory_Separator
 350               and then Name_Buffer (First - 1) /= '/'
 351             loop
 352                First := First - 1;
 353             end loop;
 354
 355             --  Check name of object file is what we expect
 356
 357             if Name /= Name_Buffer (First .. Dot_Index) then
 358                Fail ("incorrect object file name");
 359             end if;
 360          end;
 361       end if;
 362
 363       Name_Buffer (Dot_Index) := '.';
 364       Name_Buffer (Dot_Index + 1 .. Dot_Index + 3) := ALI_Suffix.all;
 365       Name_Buffer (Dot_Index + 4) := ASCII.NUL;
 366       Name_Len := Dot_Index + 3;
 367    end Set_Library_Info_Name;
 368
 369    ---------------------------------
 370    -- Set_Output_Object_File_Name --
 371    ---------------------------------
 372
 373    procedure Set_Output_Object_File_Name (Name : String) is
 374       Ext : constant String  := Target_Object_Suffix;
 375       NL  : constant Natural := Name'Length;
 376       EL  : constant Natural := Ext'Length;
 377
 378    begin
 379       --  Make sure that the object file has the expected extension
 380
 381       if NL <= EL
 382          or else
 383           (Name (NL - EL + Name'First .. Name'Last) /= Ext
 384              and then Name (NL - 2 + Name'First .. Name'Last) /= ".o")
 385       then
 386          Fail ("incorrect object file extension");
 387       end if;
 388
 389       Output_Object_File_Name := new String'(Name);
 390    end Set_Output_Object_File_Name;
 391
 392    ----------------
 393    -- Tree_Close --
 394    ----------------
 395
 396    procedure Tree_Close is
 397       Status : Boolean;
 398    begin
 399       Tree_Write_Terminate;
 400       Close (Output_FD, Status);
 401
 402       if not Status then
 403          Fail
 404            ("error while closing tree file ",
 405             Get_Name_String (Output_File_Name));
 406       end if;
 407    end Tree_Close;
 408
 409    -----------------
 410    -- Tree_Create --
 411    -----------------
 412
 413    procedure Tree_Create is
 414       Dot_Index : Natural;
 415
 416    begin
 417       Get_Name_String (Current_Main);
 418
 419       --  If an object file has been specified, then the ALI file
 420       --  will be in the same directory as the object file;
 421       --  so, we put the tree file in this same directory,
 422       --  even though no object file needs to be generated.
 423
 424       if Output_Object_File_Name /= null then
 425          Name_Len := Output_Object_File_Name'Length;
 426          Name_Buffer (1 .. Name_Len) := Output_Object_File_Name.all;
 427       end if;
 428
 429       Dot_Index := Name_Len + 1;
 430
 431       for J in reverse 1 .. Name_Len loop
 432          if Name_Buffer (J) = '.' then
 433             Dot_Index := J;
 434             exit;
 435          end if;
 436       end loop;
 437
 438       --  Should be impossible to not have an extension
 439
 440       pragma Assert (Dot_Index /= 0);
 441
 442       --  Change extension to adt
 443
 444       Name_Buffer (Dot_Index) := '.';
 445       Name_Buffer (Dot_Index + 1) := 'a';
 446       Name_Buffer (Dot_Index + 2) := 'd';
 447       Name_Buffer (Dot_Index + 3) := 't';
 448       Name_Buffer (Dot_Index + 4) := ASCII.NUL;
 449       Name_Len := Dot_Index + 3;
 450       Create_File_And_Check (Output_FD, Binary);
 451
 452       Tree_Write_Initialize (Output_FD);
 453    end Tree_Create;
 454
 455    -----------------------
 456    -- Write_Debug_Info --
 457    -----------------------
 458
 459    procedure Write_Debug_Info (Info : String) renames Write_Info;
 460
 461    ------------------------
 462    -- Write_Library_Info --
 463    ------------------------
 464
 465    procedure Write_Library_Info (Info : String) renames Write_Info;
 466
 467    ---------------------
 468    -- Write_List_Info --
 469    ---------------------
 470
 471    procedure Write_List_Info (S : String) is
 472    begin
 473       Write_With_Check (S'Address, S'Length);
 474    end Write_List_Info;
 475
 476    ------------------------
 477    -- Write_Repinfo_Line --
 478    ------------------------
 479
 480    procedure Write_Repinfo_Line (Info : String) renames Write_Info;
 481
 482 begin
 483    Adjust_OS_Resource_Limits;
 484
 485    Opt.Create_Repinfo_File_Access := Create_Repinfo_File'Access;
 486    Opt.Write_Repinfo_Line_Access  := Write_Repinfo_Line'Access;
 487    Opt.Close_Repinfo_File_Access  := Close_Repinfo_File'Access;
 488
 489    Opt.Create_List_File_Access := Create_List_File'Access;
 490    Opt.Write_List_Info_Access  := Write_List_Info'Access;
 491    Opt.Close_List_File_Access  := Close_List_File'Access;
 492
 493    Set_Program (Compiler);
 494 end Osint.C;