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273d56ce | 1 | /* Data from initial program startup for running under the GNU Hurd. |
04277e02 | 2 | Copyright (C) 1995-2019 Free Software Foundation, Inc. |
c84142e8 | 3 | This file is part of the GNU C Library. |
273d56ce | 4 | |
c84142e8 | 5 | The GNU C Library is free software; you can redistribute it and/or |
41bdb6e2 AJ |
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. | |
273d56ce | 9 | |
c84142e8 UD |
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 | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
273d56ce | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
273d56ce RM |
18 | |
19 | #ifndef _HURDSTARTUP_H | |
20 | #define _HURDSTARTUP_H 1 | |
21 | ||
79a479ce | 22 | # include <stdint.h> |
273d56ce RM |
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 | ||
c84142e8 | 34 | */ |
273d56ce RM |
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 | ||
79a479ce | 60 | extern void _hurd_startup (void **argptr, void (*main) (intptr_t *data)); |
273d56ce RM |
61 | |
62 | ||
63 | #endif /* hurdstartup.h */ |