1/* Common target-dependent code for NetBSD systems.
2   Copyright 2002 Free Software Foundation, Inc.
3   Contributed by Wasabi Systems, Inc.
4
5   This file is part of GDB.
6
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 2 of the License, or
10   (at your option) any later version.
11
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.
16
17   You should have received a copy of the GNU General Public License
18   along with this program; if not, write to the Free Software
19   Foundation, Inc., 59 Temple Place - Suite 330,
20   Boston, MA 02111-1307, USA.  */
21
22#include "defs.h"
23#include "gdb_string.h"
24#include "solib-svr4.h"
25
26/* Fetch (and possibly build) an appropriate link_map_offsets
27   structure for NetBSD targets using the struct offsets defined
28   in <link.h> (but without actual reference to that file).
29
30   This makes it possible to access NetBSD shared libraries from a
31   GDB that was not built on the same platform (for cross debugging).
32
33   We provide versions for ILP32 and LP64 NetBSD targets here.  */
34
35struct link_map_offsets *
36nbsd_ilp32_solib_svr4_fetch_link_map_offsets (void)
37{
38  static struct link_map_offsets lmo;
39  static struct link_map_offsets *lmp = NULL;
40
41  if (lmp == NULL)
42    {
43      lmp = &lmo;
44
45      lmo.r_debug_size = 16;
46
47      lmo.r_map_offset = 4;
48      lmo.r_map_size   = 4;
49
50      lmo.link_map_size = 20;
51
52      lmo.l_addr_offset = 0;
53      lmo.l_addr_size   = 4;
54
55      lmo.l_name_offset = 4;
56      lmo.l_name_size   = 4;
57
58      lmo.l_next_offset = 12;
59      lmo.l_next_size   = 4;
60
61      lmo.l_prev_offset = 16;
62      lmo.l_prev_size   = 4;
63    }
64
65  return lmp;
66}
67
68struct link_map_offsets *
69nbsd_lp64_solib_svr4_fetch_link_map_offsets (void)
70{
71  static struct link_map_offsets lmo;
72  static struct link_map_offsets *lmp = NULL;
73
74  if (lmp == NULL)
75    {
76      lmp = &lmo;
77
78      lmo.r_debug_size = 32;
79
80      lmo.r_map_offset = 8;
81      lmo.r_map_size   = 8;
82
83      lmo.link_map_size = 40;
84
85      lmo.l_addr_offset = 0;
86      lmo.l_addr_size   = 8;
87
88      lmo.l_name_offset = 8;
89      lmo.l_name_size   = 8;
90
91      lmo.l_next_offset = 24;
92      lmo.l_next_size   = 8;
93
94      lmo.l_prev_offset = 32;
95      lmo.l_prev_size   = 8;
96    }
97
98  return lmp;
99}
100
101int
102nbsd_pc_in_sigtramp (CORE_ADDR pc, char *func_name)
103{
104  /* Check for libc-provided signal trampoline.  All such trampolines
105     have function names which begin with "__sigtramp".  */
106
107  return (func_name != NULL
108	  && strncmp (func_name, "__sigtramp", 10) == 0);
109}
110