1 /* Target-dependent code for GNU/Linux, architecture independent.
3 Copyright (C) 2009, 2010 Free Software Foundation, Inc.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 3 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program. If not, see <http://www.gnu.org/licenses/>. */
22 #include "linux-tdep.h"
25 #include "elf/common.h"
27 /* This function is suitable for architectures that don't
28 extend/override the standard siginfo structure. */
31 linux_get_siginfo_type (struct gdbarch *gdbarch)
33 struct type *int_type, *uint_type, *long_type, *void_ptr_type;
34 struct type *uid_type, *pid_type;
35 struct type *sigval_type, *clock_type;
36 struct type *siginfo_type, *sifields_type;
39 int_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
41 uint_type = arch_integer_type (gdbarch, gdbarch_int_bit (gdbarch),
43 long_type = arch_integer_type (gdbarch, gdbarch_long_bit (gdbarch),
45 void_ptr_type = lookup_pointer_type (builtin_type (gdbarch)->builtin_void);
48 sigval_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
49 TYPE_NAME (sigval_type) = xstrdup ("sigval_t");
50 append_composite_type_field (sigval_type, "sival_int", int_type);
51 append_composite_type_field (sigval_type, "sival_ptr", void_ptr_type);
54 pid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, TYPE_LENGTH (int_type),
56 TYPE_TARGET_TYPE (pid_type) = int_type;
57 TYPE_TARGET_STUB (pid_type) = 1;
60 uid_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, TYPE_LENGTH (uint_type),
62 TYPE_TARGET_TYPE (uid_type) = uint_type;
63 TYPE_TARGET_STUB (uid_type) = 1;
66 clock_type = arch_type (gdbarch, TYPE_CODE_TYPEDEF, TYPE_LENGTH (long_type),
67 xstrdup ("__clock_t"));
68 TYPE_TARGET_TYPE (clock_type) = long_type;
69 TYPE_TARGET_STUB (clock_type) = 1;
72 sifields_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_UNION);
75 const int si_max_size = 128;
77 int size_of_int = gdbarch_int_bit (gdbarch) / HOST_CHAR_BIT;
80 if (gdbarch_ptr_bit (gdbarch) == 64)
81 si_pad_size = (si_max_size / size_of_int) - 4;
83 si_pad_size = (si_max_size / size_of_int) - 3;
84 append_composite_type_field (sifields_type, "_pad",
85 init_vector_type (int_type, si_pad_size));
89 type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
90 append_composite_type_field (type, "si_pid", pid_type);
91 append_composite_type_field (type, "si_uid", uid_type);
92 append_composite_type_field (sifields_type, "_kill", type);
95 type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
96 append_composite_type_field (type, "si_tid", int_type);
97 append_composite_type_field (type, "si_overrun", int_type);
98 append_composite_type_field (type, "si_sigval", sigval_type);
99 append_composite_type_field (sifields_type, "_timer", type);
102 type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
103 append_composite_type_field (type, "si_pid", pid_type);
104 append_composite_type_field (type, "si_uid", uid_type);
105 append_composite_type_field (type, "si_sigval", sigval_type);
106 append_composite_type_field (sifields_type, "_rt", type);
109 type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
110 append_composite_type_field (type, "si_pid", pid_type);
111 append_composite_type_field (type, "si_uid", uid_type);
112 append_composite_type_field (type, "si_status", int_type);
113 append_composite_type_field (type, "si_utime", clock_type);
114 append_composite_type_field (type, "si_stime", clock_type);
115 append_composite_type_field (sifields_type, "_sigchld", type);
118 type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
119 append_composite_type_field (type, "si_addr", void_ptr_type);
120 append_composite_type_field (sifields_type, "_sigfault", type);
123 type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
124 append_composite_type_field (type, "si_band", long_type);
125 append_composite_type_field (type, "si_fd", int_type);
126 append_composite_type_field (sifields_type, "_sigpoll", type);
129 siginfo_type = arch_composite_type (gdbarch, NULL, TYPE_CODE_STRUCT);
130 TYPE_NAME (siginfo_type) = xstrdup ("siginfo");
131 append_composite_type_field (siginfo_type, "si_signo", int_type);
132 append_composite_type_field (siginfo_type, "si_errno", int_type);
133 append_composite_type_field (siginfo_type, "si_code", int_type);
134 append_composite_type_field_aligned (siginfo_type,
135 "_sifields", sifields_type,
136 TYPE_LENGTH (long_type));
142 linux_has_shared_address_space (void)
144 /* Determine whether we are running on uClinux or normal Linux
147 int target_is_uclinux;
150 = (target_auxv_search (¤t_target, AT_NULL, &dummy) > 0
151 && target_auxv_search (¤t_target, AT_PAGESZ, &dummy) == 0);
153 return target_is_uclinux;