glibc (2.38)
1 /* Callback interface for libthread_db, functions users must define.
2 Copyright (C) 1999-2023 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 _PROC_SERVICE_H
20 #define _PROC_SERVICE_H 1
21
22 /* The definitions in this file must correspond to those in the debugger. */
23 #include <sys/procfs.h>
24
25 __BEGIN_DECLS
26
27 /* Functions in this interface return one of these status codes. */
28 typedef enum
29 {
30 PS_OK, /* Generic "call succeeded". */
31 PS_ERR, /* Generic error. */
32 PS_BADPID, /* Bad process handle. */
33 PS_BADLID, /* Bad LWP identifier. */
34 PS_BADADDR, /* Bad address. */
35 PS_NOSYM, /* Could not find given symbol. */
36 PS_NOFREGS /* FPU register set not available for given LWP. */
37 } ps_err_e;
38
39
40 /* This type is opaque in this interface.
41 It's defined by the user of libthread_db. */
42 struct ps_prochandle;
43
44
45 /* Read or write process memory at the given address. */
46 extern ps_err_e ps_pdread (struct ps_prochandle *,
47 psaddr_t, void *, size_t);
48 extern ps_err_e ps_pdwrite (struct ps_prochandle *,
49 psaddr_t, const void *, size_t);
50 extern ps_err_e ps_ptread (struct ps_prochandle *,
51 psaddr_t, void *, size_t);
52 extern ps_err_e ps_ptwrite (struct ps_prochandle *,
53 psaddr_t, const void *, size_t);
54
55
56 /* Get and set the given LWP's general or FPU register set. */
57 extern ps_err_e ps_lgetregs (struct ps_prochandle *,
58 lwpid_t, prgregset_t);
59 extern ps_err_e ps_lsetregs (struct ps_prochandle *,
60 lwpid_t, const prgregset_t);
61 extern ps_err_e ps_lgetfpregs (struct ps_prochandle *,
62 lwpid_t, prfpregset_t *);
63 extern ps_err_e ps_lsetfpregs (struct ps_prochandle *,
64 lwpid_t, const prfpregset_t *);
65
66 /* Return the PID of the process. */
67 extern pid_t ps_getpid (struct ps_prochandle *);
68
69 /* Fetch the special per-thread address associated with the given LWP.
70 This call is only used on a few platforms (most use a normal register).
71 The meaning of the `int' parameter is machine-dependent. */
72 extern ps_err_e ps_get_thread_area (struct ps_prochandle *,
73 lwpid_t, int, psaddr_t *);
74
75
76 /* Look up the named symbol in the named DSO in the symbol tables
77 associated with the process being debugged, filling in *SYM_ADDR
78 with the corresponding run-time address. */
79 extern ps_err_e ps_pglobal_lookup (struct ps_prochandle *,
80 const char *object_name,
81 const char *sym_name,
82 psaddr_t *sym_addr);
83
84
85 /* Stop or continue the entire process. */
86 extern ps_err_e ps_pstop (struct ps_prochandle *);
87 extern ps_err_e ps_pcontinue (struct ps_prochandle *);
88
89 /* Stop or continue the given LWP alone. */
90 extern ps_err_e ps_lstop (struct ps_prochandle *, lwpid_t);
91 extern ps_err_e ps_lcontinue (struct ps_prochandle *, lwpid_t);
92
93 __END_DECLS
94
95 #endif /* proc_service.h */
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