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------------------------------------------------------------------------------ -- -- -- GNAT COMPILER COMPONENTS -- -- -- -- O S I N T -- -- -- -- S p e c -- -- -- -- Copyright (C) 1992-2011, Free Software Foundation, Inc. -- -- -- -- GNAT is free software; you can redistribute it and/or modify it under -- -- terms of the GNU General Public License as published by the Free Soft- -- -- ware Foundation; either version 3, or (at your option) any later ver- -- -- sion. GNAT is distributed in the hope that it will be useful, but WITH- -- -- OUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY -- -- or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -- -- for more details. You should have received a copy of the GNU General -- -- Public License distributed with GNAT; see file COPYING3. If not, go to -- -- http://www.gnu.org/licenses for a complete copy of the license. -- -- -- -- GNAT was originally developed by the GNAT team at New York University. -- -- Extensive contributions were provided by Ada Core Technologies Inc. -- -- -- ------------------------------------------------------------------------------ -- This package contains the low level, operating system routines used in the -- compiler and binder for command line processing and file input output. with Namet; use Namet; with Types; use Types; with System; use System; pragma Warnings (Off); -- This package is used also by gnatcoll with System.OS_Lib; use System.OS_Lib; pragma Warnings (On); with System.Storage_Elements; pragma Elaborate_All (System.OS_Lib); -- For the call to function Get_Target_Object_Suffix in the private part package Osint is Multi_Unit_Index_Character : Character := '~'; -- The character before the index of the unit in a multi-unit source in ALI -- and object file names. Changed to '$' on VMS. Ada_Include_Path : constant String := "ADA_INCLUDE_PATH"; Ada_Objects_Path : constant String := "ADA_OBJECTS_PATH"; Project_Include_Path_File : constant String := "ADA_PRJ_INCLUDE_FILE"; Project_Objects_Path_File : constant String := "ADA_PRJ_OBJECTS_FILE"; procedure Initialize; -- Initialize internal tables function Normalize_Directory_Name (Directory : String) return String_Ptr; -- Verify and normalize a directory name. If directory name is invalid, -- this will return an empty string. Otherwise it will insure a trailing -- slash and make other normalizations. type File_Type is (Source, Library, Config, Definition, Preprocessing_Data); function Find_File (N : File_Name_Type; T : File_Type) return File_Name_Type; -- Finds a source, library or config file depending on the value of T -- following the directory search order rules unless N is the name of the -- file just read with Next_Main_File and already contains directory -- information, in which case just look in the Primary_Directory. Returns -- File_Name_Type of the full file name if found, No_File if file not -- found. Note that for the special case of gnat.adc, only the compilation -- environment directory is searched, i.e. the directory where the ali and -- object files are written. Another special case is Debug_Generated_Code -- set and the file name ends on ".dg", in which case we look for the -- generated file only in the current directory, since that is where it is -- always built. function Get_File_Names_Case_Sensitive return Int; pragma Import (C, Get_File_Names_Case_Sensitive, "__gnat_get_file_names_case_sensitive"); File_Names_Case_Sensitive : constant Boolean := Get_File_Names_Case_Sensitive /= 0; -- Set to indicate whether the operating system convention is for file -- names to be case sensitive (e.g., in Unix, set True), or non case -- sensitive (e.g., in Windows, set False). procedure Canonical_Case_File_Name (S : in out String); -- Given a file name, converts it to canonical case form. For systems -- where file names are case sensitive, this procedure has no effect. -- If file names are not case sensitive (i.e. for example if you have -- the file "xyz.adb", you can refer to it as XYZ.adb or XyZ.AdB), then -- this call converts the given string to canonical all lower case form, -- so that two file names compare equal if they refer to the same file. function Get_Env_Vars_Case_Sensitive return Int; pragma Import (C, Get_Env_Vars_Case_Sensitive, "__gnat_get_env_vars_case_sensitive"); Env_Vars_Case_Sensitive : constant Boolean := Get_Env_Vars_Case_Sensitive /= 0; -- Set to indicate whether the operating system convention is for -- environment variable names to be case sensitive (e.g., in Unix, set -- True), or non case sensitive (e.g., in Windows, set False). procedure Canonical_Case_Env_Var_Name (S : in out String); -- Given an environment variable name, converts it to canonical case form. -- For systems where environment variable names are case sensitive, this -- procedure has no effect. If environment variable names are not case -- sensitive, then this call converts the given string to canonical all -- lower case form, so that two environment variable names compare equal if -- they refer to the same environment variable. function Number_Of_Files return Int; -- Gives the total number of filenames found on the command line No_Index : constant := -1; -- Value used in Add_File to indicate no index is specified for main procedure Add_File (File_Name : String; Index : Int := No_Index); -- Called by the subprogram processing the command line for each file name -- found. The index, when not defaulted to No_Index is the index of the -- subprogram in its source, zero indicating that the source is not -- multi-unit. procedure Find_Program_Name; -- Put simple name of current program being run (excluding the directory -- path) in Name_Buffer, with the length in Name_Len. function Program_Name (Nam : String; Prog : String) return String_Access; -- In the native compilation case, Create a string containing Nam. In the -- cross compilation case, looks at the prefix of the current program being -- run and prepend it to Nam. For instance if the program being run is -- <target>-gnatmake and Nam is "gcc", the returned value will be a pointer -- to "<target>-gcc". In the specific case where AAMP_On_Target is set, the -- name "gcc" is mapped to "gnaamp", and names of the form "gnat*" are -- mapped to "gnaamp*". This function clobbers Name_Buffer and Name_Len. -- Also look at any suffix, e.g. gnatmake-4.1 -> "gcc-4.1". Prog is the -- default name of the current program being executed, e.g. "gnatmake", -- "gnatlink". procedure Write_Program_Name; -- Writes name of program as invoked to the current output (normally -- standard output). procedure Fail (S : String); pragma No_Return (Fail); -- Outputs error message S preceded by the name of the executing program -- and exits with E_Fatal. The output goes to standard error, except if -- special output is in effect (see Output). function Is_Directory_Separator (C : Character) return Boolean; -- Returns True if C is a directory separator function Get_Directory (Name : File_Name_Type) return File_Name_Type; -- Get the prefix directory name (if any) from Name. The last separator -- is preserved. Return the normalized current directory if there is no -- directory part in the name. function Is_Readonly_Library (File : File_Name_Type) return Boolean; -- Check if this library file is a read-only file function Strip_Directory (Name : File_Name_Type) return File_Name_Type; -- Strips the prefix directory name (if any) from Name. Returns the -- stripped name. Name cannot end with a directory separator. function Strip_Suffix (Name : File_Name_Type) return File_Name_Type; -- Strips the suffix (the last '.' and whatever comes after it) from Name. -- Returns the stripped name. function Executable_Name (Name : File_Name_Type; Only_If_No_Suffix : Boolean := False) return File_Name_Type; -- Given a file name it adds the appropriate suffix at the end so that -- it becomes the name of the executable on the system at end. For -- instance under DOS it adds the ".exe" suffix, whereas under UNIX no -- suffix is added. function Executable_Name (Name : String; Only_If_No_Suffix : Boolean := False) return String; -- Same as above, with String parameters function File_Stamp (Name : File_Name_Type) return Time_Stamp_Type; -- Returns the time stamp of file Name. Name should include relative path -- information in order to locate it. If the source file cannot be opened, -- or Name = No_File, and all blank time stamp is returned (this is not an -- error situation). function File_Stamp (Name : Path_Name_Type) return Time_Stamp_Type; -- Same as above for a path name type String_Access_List is array (Positive range <>) of String_Access; -- Dereferenced type used to return a list of file specs in -- To_Canonical_File_List. type String_Access_List_Access is access all String_Access_List; -- Type used to return a String_Access_List without dragging in secondary -- stack. function To_Canonical_File_List (Wildcard_Host_File : String; Only_Dirs : Boolean) return String_Access_List_Access; -- Expand a wildcard host syntax file or directory specification (e.g. on -- a VMS host, any file or directory spec that contains: "*", or "%", or -- "...") and return a list of valid Unix syntax file or directory specs. -- If Only_Dirs is True, then only return directories. function To_Canonical_Dir_Spec (Host_Dir : String; Prefix_Style : Boolean) return String_Access; -- Convert a host syntax directory specification (e.g. on a VMS host: -- "SYS$DEVICE:[DIR]") to canonical (Unix) syntax (e.g. "/sys$device/dir"). -- If Prefix_Style then make it a valid file specification prefix. A file -- specification prefix is a directory specification that can be appended -- with a simple file specification to yield a valid absolute or relative -- path to a file. On a conversion to Unix syntax this simply means the -- spec has a trailing slash ("/"). function To_Canonical_File_Spec (Host_File : String) return String_Access; -- Convert a host syntax file specification (e.g. on a VMS host: -- "SYS$DEVICE:[DIR]FILE.EXT;69 to canonical (Unix) syntax (e.g. -- "/sys$device/dir/file.ext.69"). function To_Canonical_Path_Spec (Host_Path : String) return String_Access; -- Convert a host syntax Path specification (e.g. on a VMS host: -- "SYS$DEVICE:[BAR],DISK$USER:[FOO] to canonical (Unix) syntax (e.g. -- "/sys$device/foo:disk$user/foo"). function To_Host_Dir_Spec (Canonical_Dir : String; Prefix_Style : Boolean) return String_Access; -- Convert a canonical syntax directory specification to host syntax. The -- Prefix_Style flag is currently ignored but should be set to False. -- Note that the caller must free result. function To_Host_File_Spec (Canonical_File : String) return String_Access; -- Convert a canonical syntax file specification to host syntax function Relocate_Path (Prefix : String; Path : String) return String_Ptr; -- Given an absolute path and a prefix, if Path starts with Prefix, -- replace the Prefix substring with the root installation directory. -- By default, try to compute the root installation directory by looking -- at the executable name as it was typed on the command line and, if -- needed, use the PATH environment variable. If the above computation -- fails, return Path. This function assumes Prefix'First = Path'First. function Shared_Lib (Name : String) return String; -- Returns the runtime shared library in the form -l<name>-<version> where -- version is the GNAT runtime library option for the platform. For example -- this routine called with Name set to "gnat" will return "-lgnat-5.02" -- on UNIX and Windows and -lgnat_5_02 on VMS. --------------------- -- File attributes -- --------------------- -- The following subprograms offer services similar to those found in -- System.OS_Lib, but with the ability to extra multiple information from -- a single system call, depending on the system. This can result in fewer -- system calls when reused. -- In all these subprograms, the requested value is either read from the -- File_Attributes parameter (resulting in no system call), or computed -- from the disk and then cached in the File_Attributes parameter (possibly -- along with other values). type File_Attributes is private; Unknown_Attributes : constant File_Attributes; -- A cache for various attributes for a file (length, accessibility,...) -- This must be initialized to Unknown_Attributes prior to the first call. function Is_Directory (Name : C_File_Name; Attr : access File_Attributes) return Boolean; function Is_Regular_File (Name : C_File_Name; Attr : access File_Attributes) return Boolean; function Is_Symbolic_Link (Name : C_File_Name; Attr : access File_Attributes) return Boolean; -- Return the type of the file, function File_Length (Name : C_File_Name; Attr : access File_Attributes) return Long_Integer; -- Return the length (number of bytes) of the file function File_Time_Stamp (Name : C_File_Name; Attr : access File_Attributes) return OS_Time; function File_Time_Stamp (Name : Path_Name_Type; Attr : access File_Attributes) return Time_Stamp_Type; -- Return the time stamp of the file function Is_Readable_File (Name : C_File_Name; Attr : access File_Attributes) return Boolean; function Is_Executable_File (Name : C_File_Name; Attr : access File_Attributes) return Boolean; function Is_Writable_File (Name : C_File_Name; Attr : access File_Attributes) return Boolean; -- Return the access rights for the file ------------------------- -- Search Dir Routines -- ------------------------- function Include_Dir_Default_Prefix return String; -- Return the directory of the run-time library sources, as modified -- by update_path. function Object_Dir_Default_Prefix return String; -- Return the directory of the run-time library ALI and object files, as -- modified by update_path. procedure Add_Default_Search_Dirs; -- This routine adds the default search dirs indicated by the environment -- variables and sdefault package. procedure Add_Lib_Search_Dir (Dir : String); -- Add Dir at the end of the library file search path procedure Add_Src_Search_Dir (Dir : String); -- Add Dir at the end of the source file search path procedure Get_Next_Dir_In_Path_Init (Search_Path : String_Access); function Get_Next_Dir_In_Path (Search_Path : String_Access) return String_Access; -- These subprograms are used to parse out the directory names in a search -- path specified by a Search_Path argument. The procedure initializes an -- internal pointer to point to the initial directory name, and calls to -- the function return successive directory names, with a null pointer -- marking the end of the list. type Search_File_Type is (Include, Objects); procedure Add_Search_Dirs (Search_Path : String_Ptr; Path_Type : Search_File_Type); -- These procedure adds all the search directories that are in Search_Path -- in the proper file search path (library or source) function Get_Primary_Src_Search_Directory return String_Ptr; -- Retrieved the primary directory (directory containing the main source -- file for Gnatmake. function Nb_Dir_In_Src_Search_Path return Natural; function Dir_In_Src_Search_Path (Position : Natural) return String_Ptr; -- Functions to access the directory names in the source search path function Nb_Dir_In_Obj_Search_Path return Natural; function Dir_In_Obj_Search_Path (Position : Natural) return String_Ptr; -- Functions to access the directory names in the Object search path Include_Search_File : constant String_Access := new String'("ada_source_path"); Objects_Search_File : constant String_Access := new String'("ada_object_path"); -- Names of the files containing the default include or objects search -- directories. These files, located in Sdefault.Search_Dir_Prefix, do -- not necessarily exist. Exec_Name : String_Ptr; -- Executable name as typed by the user (used to compute the -- executable prefix). function Read_Default_Search_Dirs (Search_Dir_Prefix : String_Access; Search_File : String_Access; Search_Dir_Default_Name : String_Access) return String_Access; -- Read and return the default search directories from the file located -- in Search_Dir_Prefix (as modified by update_path) and named Search_File. -- If no such file exists or an error occurs then instead return the -- Search_Dir_Default_Name (as modified by update_path). function Get_RTS_Search_Dir (Search_Dir : String; File_Type : Search_File_Type) return String_Ptr; -- This function retrieves the paths to the search (resp. lib) dirs and -- return them. The search dir can be absolute or relative. If the search -- dir contains Include_Search_File (resp. Object_Search_File), then this -- function reads and returns the default search directories from the file. -- Otherwise, if the directory is absolute, it will try to find 'adalib' -- (resp. 'adainclude'). If found, null is returned. If the directory is -- relative, the following directories for the directories 'adalib' and -- 'adainclude' will be scanned: -- -- - current directory (from which the tool has been spawned) -- - $GNAT_ROOT/gcc/gcc-lib/$targ/$vers/ -- - $GNAT_ROOT/gcc/gcc-lib/$targ/$vers/rts- -- -- The scan will stop as soon as the directory being searched for (adalib -- or adainclude) is found. If the scan fails, null is returned. ----------------------- -- Source File Input -- ----------------------- -- Source file input routines are used by the compiler to read the main -- source files and the subsidiary source files (e.g. with'ed units), and -- also by the binder to check presence/time stamps of sources. procedure Read_Source_File (N : File_Name_Type; Lo : Source_Ptr; Hi : out Source_Ptr; Src : out Source_Buffer_Ptr; T : File_Type := Source); -- Allocates a Source_Buffer of appropriate length and then reads the -- entire contents of the source file N into the buffer. The address of -- the allocated buffer is returned in Src. -- -- Each line of text is terminated by one of the sequences: -- -- CR -- CR/LF -- LF -- The source is terminated by an EOF (16#1A#) character, which is the last -- character of the returned source buffer (note that any EOF characters in -- positions other than the last source character are treated as blanks). -- -- The logical lower bound of the source buffer is the input value of Lo, -- and on exit Hi is set to the logical upper bound of the source buffer. -- Note that the returned value in Src points to an array with a physical -- lower bound of zero. This virtual origin addressing approach means that -- a constrained array pointer can be used with a low bound of zero which -- results in more efficient code. -- -- If the given file cannot be opened, then the action depends on whether -- this file is the current main unit (i.e. its name matches the name -- returned by the most recent call to Next_Main_Source). If so, then the -- failure to find the file is a fatal error, an error message is output, -- and program execution is terminated. Otherwise (for the case of a -- subsidiary source loaded directly or indirectly using with), a file -- not found condition causes null to be set as the result value. -- -- Note that the name passed to this function is the simple file name, -- without any directory information. The implementation is responsible -- for searching for the file in the appropriate directories. -- -- Note the special case that if the file name is gnat.adc, then the search -- for the file is done ONLY in the directory corresponding to the current -- compilation environment, i.e. in the same directory where the ali and -- object files will be written. function Full_Source_Name return File_Name_Type; function Current_Source_File_Stamp return Time_Stamp_Type; -- Returns the full name/time stamp of the source file most recently read -- using Read_Source_File. Calling this routine entails no source file -- directory lookup penalty. procedure Full_Source_Name (N : File_Name_Type; Full_File : out File_Name_Type; Attr : access File_Attributes); function Full_Source_Name (N : File_Name_Type) return File_Name_Type; function Source_File_Stamp (N : File_Name_Type) return Time_Stamp_Type; -- Returns the full name/time stamp of the source file whose simple name -- is N which should not include path information. Note that if the file -- cannot be located No_File is returned for the first routine and an all -- blank time stamp is returned for the second (this is not an error -- situation). The full name includes appropriate directory information. -- The source file directory lookup penalty is incurred every single time -- the routines are called unless you have previously called -- Source_File_Data (Cache => True). See below. -- -- The procedural version also returns some file attributes for the ALI -- file (to save on system calls later on). function Current_File_Index return Int; -- Return the index in its source file of the current main unit function Matching_Full_Source_Name (N : File_Name_Type; T : Time_Stamp_Type) return File_Name_Type; -- Same semantics than Full_Source_Name but will search on the source path -- until a source file with time stamp matching T is found. If none is -- found returns No_File. procedure Source_File_Data (Cache : Boolean); -- By default source file data (full source file name and time stamp) -- are looked up every time a call to Full_Source_Name (N) or -- Source_File_Stamp (N) is made. This may be undesirable in certain -- applications as this is uselessly slow if source file data does not -- change during program execution. When this procedure is called with -- Cache => True access to source file data does not incur a penalty if -- this data was previously retrieved. procedure Dump_Source_File_Names; -- Prints out the names of all source files that have been read by -- Read_Source_File, except those that come from the run-time library -- (i.e. Include_Dir_Default_Prefix). The text is sent to whatever Output -- is currently using (e.g. standard output or standard error). ------------------------------------------- -- Representation of Library Information -- ------------------------------------------- -- Associated with each compiled source file is library information, a -- string of bytes whose exact format is described in the body of Lib.Writ. -- Compiling a source file generates this library information for the -- compiled unit, and access the library information for units that were -- compiled previously on which the unit being compiled depends. -- How this information is stored is up to the implementation of this -- package. At the interface level, this information is simply associated -- with its corresponding source. -- Several different implementations are possible: -- 1. The information could be directly associated with the source file, -- e.g. placed in a resource fork of this file on the Mac, or on -- MS-DOS, written to the source file after the end of file mark. -- 2. The information could be written into the generated object module -- if the system supports the inclusion of arbitrary informational -- byte streams into object files. In this case there must be a naming -- convention that allows object files to be located given the name of -- the corresponding source file. -- 3. The information could be written to a separate file, whose name is -- related to the name of the source file by a fixed convention. -- Which of these three methods is chosen depends on the constraints of the -- host operating system. The interface described here is independent of -- which of these approaches is used. Currently all versions of GNAT use -- the third approach with a file name of xxx.ali where xxx is the source -- file name. ------------------------------- -- Library Information Input -- ------------------------------- -- These subprograms are used by the binder to read library information -- files, see section above for representation of these files. function Read_Library_Info (Lib_File : File_Name_Type; Fatal_Err : Boolean := False) return Text_Buffer_Ptr; -- Allocates a Text_Buffer of appropriate length and reads in the entire -- source of the library information from the library information file -- whose name is given by the parameter Name. -- -- See description of Read_Source_File for details on the format of the -- returned text buffer (the format is identical). The lower bound of -- the Text_Buffer is always zero -- -- If the specified file cannot be opened, then the action depends on -- Fatal_Err. If Fatal_Err is True, an error message is given and the -- compilation is abandoned. Otherwise if Fatal_Err is False, then null -- is returned. Note that the Lib_File is a simple name which does not -- include any directory information. The implementation is responsible -- for searching for the file in appropriate directories. -- -- If Opt.Check_Object_Consistency is set to True then this routine checks -- whether the object file corresponding to the Lib_File is consistent with -- it. The object file is inconsistent if the object does not exist or if -- it has an older time stamp than Lib_File. This check is not performed -- when the Lib_File is "locked" (i.e. read/only) because in this case the -- object file may be buried in a library. In case of inconsistencies -- Read_Library_Info behaves as if it did not find Lib_File (namely if -- Fatal_Err is False, null is returned). function Read_Library_Info_From_Full (Full_Lib_File : File_Name_Type; Lib_File_Attr : access File_Attributes; Fatal_Err : Boolean := False) return Text_Buffer_Ptr; -- Same as Read_Library_Info, except Full_Lib_File must contains the full -- path to the library file (instead of having Read_Library_Info recompute -- it). -- Lib_File_Attr should be an initialized set of attributes for the -- library file (it can be initialized to Unknown_Attributes, but in -- general will have been initialized by a previous call to Find_File). function Full_Library_Info_Name return File_Name_Type; function Full_Object_File_Name return File_Name_Type; -- Returns the full name of the library/object file most recently read -- using Read_Library_Info, including appropriate directory information. -- Calling this routine entails no library file directory lookup -- penalty. Note that the object file corresponding to a library file -- is not actually read. Its time stamp is affected when the flag -- Opt.Check_Object_Consistency is set. function Current_Library_File_Stamp return Time_Stamp_Type; function Current_Object_File_Stamp return Time_Stamp_Type; -- The time stamps of the files returned by the previous two routines. -- It is an error to call Current_Object_File_Stamp if -- Opt.Check_Object_Consistency is set to False. procedure Full_Lib_File_Name (N : File_Name_Type; Lib_File : out File_Name_Type; Attr : out File_Attributes); function Full_Lib_File_Name (N : File_Name_Type) return File_Name_Type; -- Returns the full name of library file N. N should not include -- path information. Note that if the file cannot be located No_File is -- returned for the first routine and an all blank time stamp is returned -- for the second (this is not an error situation). The full name includes -- the appropriate directory information. The library file directory lookup -- penalty is incurred every single time this routine is called. -- The procedural version also returns some file attributes for the ALI -- file (to save on system calls later on). function Lib_File_Name (Source_File : File_Name_Type; Munit_Index : Nat := 0) return File_Name_Type; -- Given the name of a source file, returns the name of the corresponding -- library information file. This may be the name of the object file or of -- a separate file used to store the library information. In the current -- implementation, a separate file (the ALI file) is always used. In either -- case the returned result is suitable for calling Read_Library_Info. The -- Munit_Index is the unit index in multiple unit per file mode, or zero in -- normal single unit per file mode (used to add ~nnn suffix). Note: this -- subprogram is in this section because it is used by the compiler to -- determine the proper library information names to be placed in the -- generated library information file. ----------------- -- Termination -- ----------------- Current_Exit_Status : Integer := 0; -- Exit status that is set with procedure OS_Exit_Through_Exception below -- and can be used in exception handler for Types.Terminate_Program to call -- Set_Exit_Status as the last action of the program. procedure OS_Exit_Through_Exception (Status : Integer); -- Set the Current_Exit_Status, then raise Types.Terminate_Program type Exit_Code_Type is ( E_Success, -- No warnings or errors E_Warnings, -- Compiler warnings generated E_No_Code, -- No code generated E_No_Compile, -- Compilation not needed (smart recompilation) E_Errors, -- Compiler error messages generated E_Fatal, -- Fatal (serious) error, e.g. source file not found E_Abort); -- Internally detected compiler error procedure Exit_Program (Exit_Code : Exit_Code_Type); pragma No_Return (Exit_Program); -- A call to Exit_Program terminates execution with the given status. A -- status of zero indicates normal completion, a non-zero status indicates -- abnormal termination. ------------------------- -- Command Line Access -- ------------------------- -- Direct interface to command line parameters. (We don't want to use -- the predefined command line package because it defines functions -- returning string) function Arg_Count return Natural; pragma Import (C, Arg_Count, "__gnat_arg_count"); -- Get number of arguments (note: optional globbing may be enabled) procedure Fill_Arg (A : System.Address; Arg_Num : Integer); pragma Import (C, Fill_Arg, "__gnat_fill_arg"); -- Store one argument function Len_Arg (Arg_Num : Integer) return Integer; pragma Import (C, Len_Arg, "__gnat_len_arg"); -- Get length of argument ALI_Default_Suffix : constant String_Ptr := new String'("ali"); ALI_Suffix : String_Ptr := ALI_Default_Suffix; -- The suffixes used for the library files (also known as ALI files) private Current_Main : File_Name_Type := No_File; -- Used to save a simple file name between calls to Next_Main_Source and -- Read_Source_File. If the file name argument to Read_Source_File is -- No_File, that indicates that the file whose name was returned by the -- last call to Next_Main_Source (and stored here) is to be read. Target_Object_Suffix : constant String := Get_Target_Object_Suffix.all; -- The suffix used for the target object files Output_FD : File_Descriptor; -- File descriptor for current library info, list, tree, or binder output Output_File_Name : File_Name_Type; -- File_Name_Type for name of open file whose FD is in Output_FD, the name -- stored does not include the trailing NUL character. Argument_Count : constant Integer := Arg_Count - 1; -- Number of arguments (excluding program name) type File_Name_Array is array (Int range <>) of String_Ptr; type File_Name_Array_Ptr is access File_Name_Array; File_Names : File_Name_Array_Ptr := new File_Name_Array (1 .. Int (Argument_Count) + 2); -- As arguments are scanned, file names are stored in this array. The -- strings do not have terminating NUL files. The array is extensible, -- because when using project files, there may be more files than -- arguments on the command line. type File_Index_Array is array (Int range <>) of Int; type File_Index_Array_Ptr is access File_Index_Array; File_Indexes : File_Index_Array_Ptr := new File_Index_Array (1 .. Int (Argument_Count) + 2); Current_File_Name_Index : Int := 0; -- The index in File_Names of the last file opened by Next_Main_Source -- or Next_Main_Lib_File. The value 0 indicates that no files have been -- opened yet. procedure Create_File_And_Check (Fdesc : out File_Descriptor; Fmode : Mode); -- Create file whose name (NUL terminated) is in Name_Buffer (with the -- length in Name_Len), and place the resulting descriptor in Fdesc. Issue -- message and exit with fatal error if file cannot be created. The Fmode -- parameter is set to either Text or Binary (for details see description -- of System.OS_Lib.Create_File). type Program_Type is (Compiler, Binder, Make, Gnatls, Unspecified); -- Program currently running procedure Set_Program (P : Program_Type); -- Indicates to the body of Osint the program currently running. This -- procedure is called by the child packages of Osint. A check is made -- that this procedure is not called more than once. function More_Files return Boolean; -- Implements More_Source_Files and More_Lib_Files function Next_Main_File return File_Name_Type; -- Implements Next_Main_Source and Next_Main_Lib_File function Object_File_Name (N : File_Name_Type) return File_Name_Type; -- Constructs the name of the object file corresponding to library file N. -- If N is a full file name than the returned file name will also be a full -- file name. Note that no lookup in the library file directories is done -- for this file. This routine merely constructs the name. procedure Write_Info (Info : String); -- Implementation of Write_Binder_Info, Write_Debug_Info and -- Write_Library_Info (identical) procedure Write_With_Check (A : Address; N : Integer); -- Writes N bytes from buffer starting at address A to file whose FD is -- stored in Output_FD, and whose file name is stored as a File_Name_Type -- in Output_File_Name. A check is made for disk full, and if this is -- detected, the file being written is deleted, and a fatal error is -- signalled. File_Attributes_Size : constant Natural := 24; -- This should be big enough to fit a "struct file_attributes" on any -- system. It doesn't cause any malfunction if it is too big (which avoids -- the need for either mapping the struct exactly or importing the sizeof -- from C, which would result in dynamic code). However, it does waste -- space (e.g. when a component of this type appears in a record, if it is -- unnecessarily large. type File_Attributes is array (1 .. File_Attributes_Size) of System.Storage_Elements.Storage_Element; for File_Attributes'Alignment use Standard'Maximum_Alignment; Unknown_Attributes : constant File_Attributes := (others => 0); -- Will be initialized properly at elaboration (for efficiency later on, -- avoid function calls every time we want to reset the attributes). end Osint;
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