diff options
Diffstat (limited to 'gcc/ada/g-os_lib.adb')
| -rw-r--r-- | gcc/ada/g-os_lib.adb | 107 |
1 files changed, 55 insertions, 52 deletions
diff --git a/gcc/ada/g-os_lib.adb b/gcc/ada/g-os_lib.adb index 24f6297b639..d568d364a7a 100644 --- a/gcc/ada/g-os_lib.adb +++ b/gcc/ada/g-os_lib.adb @@ -32,6 +32,7 @@ ------------------------------------------------------------------------------ with System.Case_Util; +with System.CRTL; with System.Soft_Links; with Unchecked_Conversion; with System; use System; @@ -82,8 +83,7 @@ package body GNAT.OS_Lib is function To_Path_String_Access (Path_Addr : Address; - Path_Len : Integer) - return String_Access; + Path_Len : Integer) return String_Access; -- Converts a C String to an Ada String. We could do this making use of -- Interfaces.C.Strings but we prefer not to import that entire package @@ -143,8 +143,7 @@ package body GNAT.OS_Lib is ----------------------------- function Argument_String_To_List - (Arg_String : String) - return Argument_List_Access + (Arg_String : String) return Argument_List_Access is Max_Args : constant Integer := Arg_String'Length; New_Argv : Argument_List (1 .. Max_Args); @@ -397,8 +396,7 @@ package body GNAT.OS_Lib is function Copy_Attributes (From, To : System.Address; - Mode : Integer) - return Integer; + Mode : Integer) return Integer; pragma Import (C, Copy_Attributes, "__gnat_copy_attribs"); -- Mode = 0 - copy only time stamps. -- Mode = 1 - copy time stamps and read/write/execute attributes @@ -558,8 +556,7 @@ package body GNAT.OS_Lib is function Copy_Attributes (From, To : System.Address; - Mode : Integer) - return Integer; + Mode : Integer) return Integer; pragma Import (C, Copy_Attributes, "__gnat_copy_attribs"); -- Mode = 0 - copy only time stamps. -- Mode = 1 - copy time stamps and read/write/execute attributes @@ -611,13 +608,11 @@ package body GNAT.OS_Lib is function Create_File (Name : C_File_Name; - Fmode : Mode) - return File_Descriptor + Fmode : Mode) return File_Descriptor is function C_Create_File (Name : C_File_Name; - Fmode : Mode) - return File_Descriptor; + Fmode : Mode) return File_Descriptor; pragma Import (C, C_Create_File, "__gnat_open_create"); begin @@ -626,8 +621,7 @@ package body GNAT.OS_Lib is function Create_File (Name : String; - Fmode : Mode) - return File_Descriptor + Fmode : Mode) return File_Descriptor is C_Name : String (1 .. Name'Length + 1); @@ -643,13 +637,11 @@ package body GNAT.OS_Lib is function Create_New_File (Name : C_File_Name; - Fmode : Mode) - return File_Descriptor + Fmode : Mode) return File_Descriptor is function C_Create_New_File (Name : C_File_Name; - Fmode : Mode) - return File_Descriptor; + Fmode : Mode) return File_Descriptor; pragma Import (C, C_Create_New_File, "__gnat_open_new"); begin @@ -658,8 +650,7 @@ package body GNAT.OS_Lib is function Create_New_File (Name : String; - Fmode : Mode) - return File_Descriptor + Fmode : Mode) return File_Descriptor is C_Name : String (1 .. Name'Length + 1); @@ -679,8 +670,7 @@ package body GNAT.OS_Lib is is function Open_New_Temp (Name : System.Address; - Fmode : Mode) - return File_Descriptor; + Fmode : Mode) return File_Descriptor; pragma Import (C, Open_New_Temp, "__gnat_open_new_temp"); begin @@ -1225,8 +1215,7 @@ package body GNAT.OS_Lib is ------------------------- function Locate_Exec_On_Path - (Exec_Name : String) - return String_Access + (Exec_Name : String) return String_Access is function Locate_Exec_On_Path (C_Exec_Name : Address) return Address; pragma Import (C, Locate_Exec_On_Path, "__gnat_locate_exec_on_path"); @@ -1262,8 +1251,7 @@ package body GNAT.OS_Lib is function Locate_Regular_File (File_Name : C_File_Name; - Path : C_File_Name) - return String_Access + Path : C_File_Name) return String_Access is function Locate_Regular_File (C_File_Name, Path_Val : Address) return Address; @@ -1291,8 +1279,7 @@ package body GNAT.OS_Lib is function Locate_Regular_File (File_Name : String; - Path : String) - return String_Access + Path : String) return String_Access is C_File_Name : String (1 .. File_Name'Length + 1); C_Path : String (1 .. Path'Length + 1); @@ -1313,8 +1300,7 @@ package body GNAT.OS_Lib is function Non_Blocking_Spawn (Program_Name : String; - Args : Argument_List) - return Process_Id + Args : Argument_List) return Process_Id is Junk : Integer; Pid : Process_Id; @@ -1428,8 +1414,7 @@ package body GNAT.OS_Lib is (Name : String; Directory : String := ""; Resolve_Links : Boolean := True; - Case_Sensitive : Boolean := True) - return String + Case_Sensitive : Boolean := True) return String is Max_Path : Integer; pragma Import (C, Max_Path, "__gnat_max_path_len"); @@ -1465,13 +1450,11 @@ package body GNAT.OS_Lib is function Readlink (Path : System.Address; Buf : System.Address; - Bufsiz : Integer) - return Integer; + Bufsiz : Integer) return Integer; pragma Import (C, Readlink, "__gnat_readlink"); function To_Canonical_File_Spec - (Host_File : System.Address) - return System.Address; + (Host_File : System.Address) return System.Address; pragma Import (C, To_Canonical_File_Spec, "__gnat_to_canonical_file_spec"); @@ -1909,13 +1892,11 @@ package body GNAT.OS_Lib is function Open_Read (Name : C_File_Name; - Fmode : Mode) - return File_Descriptor + Fmode : Mode) return File_Descriptor is function C_Open_Read (Name : C_File_Name; - Fmode : Mode) - return File_Descriptor; + Fmode : Mode) return File_Descriptor; pragma Import (C, C_Open_Read, "__gnat_open_read"); begin @@ -1924,8 +1905,7 @@ package body GNAT.OS_Lib is function Open_Read (Name : String; - Fmode : Mode) - return File_Descriptor + Fmode : Mode) return File_Descriptor is C_Name : String (1 .. Name'Length + 1); @@ -1941,13 +1921,11 @@ package body GNAT.OS_Lib is function Open_Read_Write (Name : C_File_Name; - Fmode : Mode) - return File_Descriptor + Fmode : Mode) return File_Descriptor is function C_Open_Read_Write (Name : C_File_Name; - Fmode : Mode) - return File_Descriptor; + Fmode : Mode) return File_Descriptor; pragma Import (C, C_Open_Read_Write, "__gnat_open_rw"); begin @@ -1956,8 +1934,7 @@ package body GNAT.OS_Lib is function Open_Read_Write (Name : String; - Fmode : Mode) - return File_Descriptor + Fmode : Mode) return File_Descriptor is C_Name : String (1 .. Name'Length + 1); @@ -1967,6 +1944,20 @@ package body GNAT.OS_Lib is return Open_Read_Write (C_Name (C_Name'First)'Address, Fmode); end Open_Read_Write; + ---------- + -- Read -- + ---------- + + function Read + (FD : File_Descriptor; + A : System.Address; + N : Integer) return Integer + is + begin + return Integer (System.CRTL.read + (System.CRTL.int (FD), System.CRTL.chars (A), System.CRTL.int (N))); + end Read; + ----------------- -- Rename_File -- ----------------- @@ -2031,8 +2022,7 @@ package body GNAT.OS_Lib is function Spawn (Program_Name : String; - Args : Argument_List) - return Integer + Args : Argument_List) return Integer is Junk : Process_Id; Result : Integer; @@ -2173,8 +2163,7 @@ package body GNAT.OS_Lib is function To_Path_String_Access (Path_Addr : Address; - Path_Len : Integer) - return String_Access + Path_Len : Integer) return String_Access is subtype Path_String is String (1 .. Path_Len); type Path_String_Access is access Path_String; @@ -2213,4 +2202,18 @@ package body GNAT.OS_Lib is Success := (Status = 0); end Wait_Process; + ----------- + -- Write -- + ----------- + + function Write + (FD : File_Descriptor; + A : System.Address; + N : Integer) return Integer + is + begin + return Integer (System.CRTL.write + (System.CRTL.int (FD), System.CRTL.chars (A), System.CRTL.int (N))); + end Write; + end GNAT.OS_Lib; |