1*b725ae77Skettenis /* Common target-dependent code for NetBSD systems.
2*b725ae77Skettenis Copyright 2002 Free Software Foundation, Inc.
3*b725ae77Skettenis Contributed by Wasabi Systems, Inc.
4*b725ae77Skettenis
5*b725ae77Skettenis This file is part of GDB.
6*b725ae77Skettenis
7*b725ae77Skettenis This program is free software; you can redistribute it and/or modify
8*b725ae77Skettenis it under the terms of the GNU General Public License as published by
9*b725ae77Skettenis the Free Software Foundation; either version 2 of the License, or
10*b725ae77Skettenis (at your option) any later version.
11*b725ae77Skettenis
12*b725ae77Skettenis This program is distributed in the hope that it will be useful,
13*b725ae77Skettenis but WITHOUT ANY WARRANTY; without even the implied warranty of
14*b725ae77Skettenis MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15*b725ae77Skettenis GNU General Public License for more details.
16*b725ae77Skettenis
17*b725ae77Skettenis You should have received a copy of the GNU General Public License
18*b725ae77Skettenis along with this program; if not, write to the Free Software
19*b725ae77Skettenis Foundation, Inc., 59 Temple Place - Suite 330,
20*b725ae77Skettenis Boston, MA 02111-1307, USA. */
21*b725ae77Skettenis
22*b725ae77Skettenis #include "defs.h"
23*b725ae77Skettenis #include "gdb_string.h"
24*b725ae77Skettenis #include "solib-svr4.h"
25*b725ae77Skettenis
26*b725ae77Skettenis /* Fetch (and possibly build) an appropriate link_map_offsets
27*b725ae77Skettenis structure for NetBSD targets using the struct offsets defined
28*b725ae77Skettenis in <link.h> (but without actual reference to that file).
29*b725ae77Skettenis
30*b725ae77Skettenis This makes it possible to access NetBSD shared libraries from a
31*b725ae77Skettenis GDB that was not built on the same platform (for cross debugging).
32*b725ae77Skettenis
33*b725ae77Skettenis We provide versions for ILP32 and LP64 NetBSD targets here. */
34*b725ae77Skettenis
35*b725ae77Skettenis struct link_map_offsets *
nbsd_ilp32_solib_svr4_fetch_link_map_offsets(void)36*b725ae77Skettenis nbsd_ilp32_solib_svr4_fetch_link_map_offsets (void)
37*b725ae77Skettenis {
38*b725ae77Skettenis static struct link_map_offsets lmo;
39*b725ae77Skettenis static struct link_map_offsets *lmp = NULL;
40*b725ae77Skettenis
41*b725ae77Skettenis if (lmp == NULL)
42*b725ae77Skettenis {
43*b725ae77Skettenis lmp = &lmo;
44*b725ae77Skettenis
45*b725ae77Skettenis lmo.r_debug_size = 16;
46*b725ae77Skettenis
47*b725ae77Skettenis lmo.r_map_offset = 4;
48*b725ae77Skettenis lmo.r_map_size = 4;
49*b725ae77Skettenis
50*b725ae77Skettenis lmo.link_map_size = 20;
51*b725ae77Skettenis
52*b725ae77Skettenis lmo.l_addr_offset = 0;
53*b725ae77Skettenis lmo.l_addr_size = 4;
54*b725ae77Skettenis
55*b725ae77Skettenis lmo.l_name_offset = 4;
56*b725ae77Skettenis lmo.l_name_size = 4;
57*b725ae77Skettenis
58*b725ae77Skettenis lmo.l_next_offset = 12;
59*b725ae77Skettenis lmo.l_next_size = 4;
60*b725ae77Skettenis
61*b725ae77Skettenis lmo.l_prev_offset = 16;
62*b725ae77Skettenis lmo.l_prev_size = 4;
63*b725ae77Skettenis }
64*b725ae77Skettenis
65*b725ae77Skettenis return lmp;
66*b725ae77Skettenis }
67*b725ae77Skettenis
68*b725ae77Skettenis struct link_map_offsets *
nbsd_lp64_solib_svr4_fetch_link_map_offsets(void)69*b725ae77Skettenis nbsd_lp64_solib_svr4_fetch_link_map_offsets (void)
70*b725ae77Skettenis {
71*b725ae77Skettenis static struct link_map_offsets lmo;
72*b725ae77Skettenis static struct link_map_offsets *lmp = NULL;
73*b725ae77Skettenis
74*b725ae77Skettenis if (lmp == NULL)
75*b725ae77Skettenis {
76*b725ae77Skettenis lmp = &lmo;
77*b725ae77Skettenis
78*b725ae77Skettenis lmo.r_debug_size = 32;
79*b725ae77Skettenis
80*b725ae77Skettenis lmo.r_map_offset = 8;
81*b725ae77Skettenis lmo.r_map_size = 8;
82*b725ae77Skettenis
83*b725ae77Skettenis lmo.link_map_size = 40;
84*b725ae77Skettenis
85*b725ae77Skettenis lmo.l_addr_offset = 0;
86*b725ae77Skettenis lmo.l_addr_size = 8;
87*b725ae77Skettenis
88*b725ae77Skettenis lmo.l_name_offset = 8;
89*b725ae77Skettenis lmo.l_name_size = 8;
90*b725ae77Skettenis
91*b725ae77Skettenis lmo.l_next_offset = 24;
92*b725ae77Skettenis lmo.l_next_size = 8;
93*b725ae77Skettenis
94*b725ae77Skettenis lmo.l_prev_offset = 32;
95*b725ae77Skettenis lmo.l_prev_size = 8;
96*b725ae77Skettenis }
97*b725ae77Skettenis
98*b725ae77Skettenis return lmp;
99*b725ae77Skettenis }
100*b725ae77Skettenis
101*b725ae77Skettenis int
nbsd_pc_in_sigtramp(CORE_ADDR pc,char * func_name)102*b725ae77Skettenis nbsd_pc_in_sigtramp (CORE_ADDR pc, char *func_name)
103*b725ae77Skettenis {
104*b725ae77Skettenis /* Check for libc-provided signal trampoline. All such trampolines
105*b725ae77Skettenis have function names which begin with "__sigtramp". */
106*b725ae77Skettenis
107*b725ae77Skettenis return (func_name != NULL
108*b725ae77Skettenis && strncmp (func_name, "__sigtramp", 10) == 0);
109*b725ae77Skettenis }
110