Commit | Line | Data |
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36a6271d | 1 | /* Target-dependent code for OSF/1 on Alpha. |
4be87837 | 2 | Copyright 2002, 2003 Free Software Foundation, Inc. |
36a6271d JT |
3 | |
4 | This file is part of GDB. | |
5 | ||
6 | This program is free software; you can redistribute it and/or modify | |
7 | it under the terms of the GNU General Public License as published by | |
8 | the Free Software Foundation; either version 2 of the License, or | |
9 | (at your option) any later version. | |
10 | ||
11 | This program is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | GNU General Public License for more details. | |
15 | ||
16 | You should have received a copy of the GNU General Public License | |
17 | along with this program; if not, write to the Free Software | |
18 | Foundation, Inc., 59 Temple Place - Suite 330, | |
19 | Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "defs.h" | |
22 | #include "frame.h" | |
5868c862 | 23 | #include "gdbcore.h" |
36a6271d | 24 | #include "value.h" |
4be87837 | 25 | #include "osabi.h" |
4c2e2391 | 26 | #include "gdb_string.h" |
9798ab0d | 27 | #include "objfiles.h" |
36a6271d JT |
28 | |
29 | #include "alpha-tdep.h" | |
30 | ||
6c72f9f9 JT |
31 | static int |
32 | alpha_osf1_pc_in_sigtramp (CORE_ADDR pc, char *func_name) | |
33 | { | |
bde58177 | 34 | return (func_name != NULL && strcmp ("__sigtramp", func_name) == 0); |
6c72f9f9 JT |
35 | } |
36 | ||
5868c862 JT |
37 | static CORE_ADDR |
38 | alpha_osf1_sigcontext_addr (struct frame_info *frame) | |
39 | { | |
37bb6d9f JB |
40 | struct frame_info *next_frame = get_next_frame (frame); |
41 | ||
42 | if (next_frame != NULL) | |
43 | return (read_memory_integer (get_frame_base (next_frame), 8)); | |
44 | else | |
45 | return (read_memory_integer (get_frame_base (frame), 8)); | |
5868c862 JT |
46 | } |
47 | ||
36a6271d JT |
48 | static void |
49 | alpha_osf1_init_abi (struct gdbarch_info info, | |
50 | struct gdbarch *gdbarch) | |
51 | { | |
52 | struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); | |
53 | ||
0bd79c5c JB |
54 | /* Hook into the MDEBUG frame unwinder. */ |
55 | alpha_mdebug_init_abi (info, gdbarch); | |
56 | ||
6c72f9f9 | 57 | set_gdbarch_pc_in_sigtramp (gdbarch, alpha_osf1_pc_in_sigtramp); |
c8edd8b4 JB |
58 | /* The next/step support via procfs on OSF1 is broken when running |
59 | on multi-processor machines. We need to use software single stepping | |
60 | instead. */ | |
61 | set_gdbarch_software_single_step (gdbarch, alpha_software_single_step); | |
6c72f9f9 | 62 | |
5868c862 | 63 | tdep->sigcontext_addr = alpha_osf1_sigcontext_addr; |
accc6d1f JT |
64 | |
65 | tdep->jb_pc = 2; | |
66 | tdep->jb_elt_size = 8; | |
36a6271d JT |
67 | } |
68 | ||
69 | void | |
70 | _initialize_alpha_osf1_tdep (void) | |
71 | { | |
05816f70 MK |
72 | gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_OSF1, |
73 | alpha_osf1_init_abi); | |
36a6271d | 74 | } |