1 ------------------------------------------------------------------------------
3 -- GNAT RUN-TIME COMPONENTS --
5 -- S Y S T E M . C R T L --
9 -- Copyright (C) 2003-2009, Free Software Foundation, Inc. --
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. --
18 -- As a special exception under Section 7 of GPL version 3, you are granted --
19 -- additional permissions described in the GCC Runtime Library Exception, --
20 -- version 3.1, as published by the Free Software Foundation. --
22 -- You should have received a copy of the GNU General Public License and --
23 -- a copy of the GCC Runtime Library Exception along with this program; --
24 -- see the files COPYING3 and COPYING.RUNTIME respectively. If not, see --
25 -- <http://www.gnu.org/licenses/>. --
27 -- GNAT was originally developed by the GNAT team at New York University. --
28 -- Extensive contributions were provided by Ada Core Technologies Inc. --
30 ------------------------------------------------------------------------------
32 -- This package provides the low level interface to the C runtime library
34 with System.Parameters;
36 package System.CRTL is
39 subtype chars is System.Address;
40 -- Pointer to null-terminated array of characters
42 subtype DIRs is System.Address;
43 -- Corresponds to the C type DIR*
45 subtype FILEs is System.Address;
46 -- Corresponds to the C type FILE*
48 subtype int is Integer;
50 type long is range -(2 ** (System.Parameters.long_bits - 1))
51 .. +(2 ** (System.Parameters.long_bits - 1)) - 1;
53 subtype off_t is Long_Integer;
55 type size_t is mod 2 ** Standard'Address_Size;
57 type Filename_Encoding is (UTF8, ASCII_8bits, Unspecified);
58 for Filename_Encoding use (UTF8 => 0, ASCII_8bits => 1, Unspecified => 2);
59 pragma Convention (C, Filename_Encoding);
60 -- Describes the filename's encoding
62 function atoi (A : System.Address) return Integer;
63 pragma Import (C, atoi, "atoi");
65 procedure clearerr (stream : FILEs);
66 pragma Import (C, clearerr, "clearerr");
68 function dup (handle : int) return int;
69 pragma Import (C, dup, "dup");
71 function dup2 (from, to : int) return int;
72 pragma Import (C, dup2, "dup2");
74 function fclose (stream : FILEs) return int;
75 pragma Import (C, fclose, "fclose");
77 function fdopen (handle : int; mode : chars) return FILEs;
78 pragma Import (C, fdopen, "fdopen");
80 function fflush (stream : FILEs) return int;
81 pragma Import (C, fflush, "fflush");
83 function fgetc (stream : FILEs) return int;
84 pragma Import (C, fgetc, "fgetc");
86 function fgets (strng : chars; n : int; stream : FILEs) return chars;
87 pragma Import (C, fgets, "fgets");
92 encoding : Filename_Encoding := Unspecified) return FILEs;
93 pragma Import (C, fopen, "__gnat_fopen");
95 function fputc (C : int; stream : FILEs) return int;
96 pragma Import (C, fputc, "fputc");
98 function fputs (Strng : chars; Stream : FILEs) return int;
99 pragma Import (C, fputs, "fputs");
101 procedure free (Ptr : System.Address);
102 pragma Import (C, free, "free");
108 encoding : Filename_Encoding := Unspecified) return FILEs;
109 pragma Import (C, freopen, "__gnat_freopen");
116 pragma Import (C, fseek, "fseek");
118 function ftell (stream : FILEs) return long;
119 pragma Import (C, ftell, "ftell");
121 function getenv (S : String) return System.Address;
122 pragma Import (C, getenv, "getenv");
124 function isatty (handle : int) return int;
125 pragma Import (C, isatty, "isatty");
127 function lseek (fd : int; offset : off_t; direction : int) return off_t;
128 pragma Import (C, lseek, "lseek");
130 function malloc (Size : size_t) return System.Address;
131 pragma Import (C, malloc, "malloc");
133 procedure memcpy (S1 : System.Address; S2 : System.Address; N : size_t);
134 pragma Import (C, memcpy, "memcpy");
136 procedure memmove (S1 : System.Address; S2 : System.Address; N : size_t);
137 pragma Import (C, memmove, "memmove");
139 procedure mktemp (template : chars);
140 pragma Import (C, mktemp, "mktemp");
142 function pclose (stream : System.Address) return int;
143 pragma Import (C, pclose, "pclose");
145 function popen (command, mode : System.Address) return System.Address;
146 pragma Import (C, popen, "popen");
149 (Ptr : System.Address; Size : size_t) return System.Address;
150 pragma Import (C, realloc, "realloc");
152 procedure rewind (stream : FILEs);
153 pragma Import (C, rewind, "rewind");
155 function rmdir (dir_name : String) return int;
156 pragma Import (C, rmdir, "__gnat_rmdir");
158 function chdir (dir_name : String) return int;
159 pragma Import (C, chdir, "__gnat_chdir");
167 pragma Import (C, setvbuf, "setvbuf");
169 procedure tmpnam (string : chars);
170 pragma Import (C, tmpnam, "tmpnam");
172 function tmpfile return FILEs;
173 pragma Import (C, tmpfile, "tmpfile");
175 function ungetc (c : int; stream : FILEs) return int;
176 pragma Import (C, ungetc, "ungetc");
178 function unlink (filename : chars) return int;
179 pragma Import (C, unlink, "__gnat_unlink");
181 function open (filename : chars; oflag : int) return int;
182 pragma Import (C, open, "open");
184 function close (fd : int) return int;
185 pragma Import (C, close, "close");
187 function read (fd : int; buffer : chars; nbytes : int) return int;
188 pragma Import (C, read, "read");
190 function write (fd : int; buffer : chars; nbytes : int) return int;
191 pragma Import (C, write, "write");
193 function strerror (errno : int) return chars;
194 pragma Import (C, strerror, "strerror");