1 /* Target-dependent code for OSF/1 on Alpha.
2 Copyright (C) 2002, 2003, 2007, 2008, 2009, 2010, 2011
3 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/>. */
25 #include "gdb_string.h"
28 #include "alpha-tdep.h"
31 alpha_osf1_pc_in_sigtramp (struct gdbarch *gdbarch,
32 CORE_ADDR pc, char *func_name)
34 return (func_name != NULL && strcmp ("__sigtramp", func_name) == 0);
38 alpha_osf1_sigcontext_addr (struct frame_info *this_frame)
40 struct gdbarch *gdbarch = get_frame_arch (this_frame);
41 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
42 struct frame_info *next_frame = get_next_frame (this_frame);
43 struct frame_id next_id = null_frame_id;
45 if (next_frame != NULL)
46 next_id = get_frame_id (next_frame);
48 return (read_memory_integer (next_id.stack_addr, 8, byte_order));
52 alpha_osf1_init_abi (struct gdbarch_info info,
53 struct gdbarch *gdbarch)
55 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
57 /* Hook into the MDEBUG frame unwinder. */
58 alpha_mdebug_init_abi (info, gdbarch);
60 /* The next/step support via procfs on OSF1 is broken when running
61 on multi-processor machines. We need to use software single
63 set_gdbarch_software_single_step (gdbarch, alpha_software_single_step);
65 tdep->sigcontext_addr = alpha_osf1_sigcontext_addr;
66 tdep->pc_in_sigtramp = alpha_osf1_pc_in_sigtramp;
69 tdep->jb_elt_size = 8;
72 /* Provide a prototype to silence -Wmissing-prototypes. */
73 extern initialize_file_ftype _initialize_alpha_osf1_tdep;
76 _initialize_alpha_osf1_tdep (void)
78 gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_OSF1,