1 | /* Data from initial program startup for running under the GNU Hurd. |
2 | Copyright (C) 1995-2022 Free Software Foundation, Inc. |
3 | This file is part of the GNU C Library. |
4 | |
5 | The GNU C Library is free software; you can redistribute it and/or |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either |
8 | version 2.1 of the License, or (at your option) any later version. |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
13 | Lesser General Public License for more details. |
14 | |
15 | You should have received a copy of the GNU Lesser General Public |
16 | License along with the GNU C Library; if not, see |
17 | <https://www.gnu.org/licenses/>. */ |
18 | |
19 | #ifndef _HURDSTARTUP_H |
20 | #define _HURDSTARTUP_H 1 |
21 | |
22 | # include <stdint.h> |
23 | |
24 | /* Interesting data saved from the exec_startup reply. |
25 | The DATA argument to *MAIN (see below) points to: |
26 | |
27 | int argc; |
28 | char *argv[argc]; |
29 | char *argv_terminator = NULL; |
30 | char *envp[?]; |
31 | char *envp_terminator = NULL; |
32 | struct hurd_startup_data data; |
33 | |
34 | */ |
35 | |
36 | struct hurd_startup_data |
37 | { |
38 | int flags; |
39 | mach_port_t *dtable; |
40 | mach_msg_type_number_t dtablesize; |
41 | mach_port_t *portarray; |
42 | mach_msg_type_number_t portarraysize; |
43 | int *intarray; |
44 | mach_msg_type_number_t intarraysize; |
45 | vm_address_t stack_base; |
46 | vm_size_t stack_size; |
47 | vm_address_t phdr; |
48 | vm_size_t phdrsz; |
49 | vm_address_t user_entry; |
50 | }; |
51 | |
52 | |
53 | /* Initialize Mach RPCs; do initial handshake with the exec server (or |
54 | extract the arguments from the stack in the case of the bootstrap task); |
55 | finally, call *MAIN with the information gleaned. That function is not |
56 | expected to return. ARGPTR should be the address of the first argument |
57 | of the entry point function that is called with the stack exactly as the |
58 | exec server or kernel sets it. */ |
59 | |
60 | extern void _hurd_startup (void **argptr, void (*main) (intptr_t *data)); |
61 | |
62 | |
63 | #endif /* hurdstartup.h */ |
64 | |