1 /* Target-dependent code for OSF/1 on Alpha.
2 Copyright (C) 2002-2014 Free Software Foundation, Inc.
4 This file is part of GDB.
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 3 of the License, or
9 (at your option) any later version.
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.
16 You should have received a copy of the GNU General Public License
17 along with this program. If not, see <http://www.gnu.org/licenses/>. */
27 #include "alpha-tdep.h"
30 alpha_osf1_pc_in_sigtramp (struct gdbarch *gdbarch,
31 CORE_ADDR pc, const char *func_name)
33 return (func_name != NULL && strcmp ("__sigtramp", func_name) == 0);
37 alpha_osf1_sigcontext_addr (struct frame_info *this_frame)
39 struct gdbarch *gdbarch = get_frame_arch (this_frame);
40 enum bfd_endian byte_order = gdbarch_byte_order (gdbarch);
41 struct frame_info *next_frame = get_next_frame (this_frame);
42 struct frame_id next_id = null_frame_id;
44 if (next_frame != NULL)
45 next_id = get_frame_id (next_frame);
47 return (read_memory_integer (next_id.stack_addr, 8, byte_order));
51 alpha_osf1_init_abi (struct gdbarch_info info,
52 struct gdbarch *gdbarch)
54 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
56 /* Hook into the MDEBUG frame unwinder. */
57 alpha_mdebug_init_abi (info, gdbarch);
59 /* The next/step support via procfs on OSF1 is broken when running
60 on multi-processor machines. We need to use software single
62 set_gdbarch_software_single_step (gdbarch, alpha_software_single_step);
64 tdep->sigcontext_addr = alpha_osf1_sigcontext_addr;
65 tdep->pc_in_sigtramp = alpha_osf1_pc_in_sigtramp;
68 tdep->jb_elt_size = 8;
71 /* Provide a prototype to silence -Wmissing-prototypes. */
72 extern initialize_file_ftype _initialize_alpha_osf1_tdep;
75 _initialize_alpha_osf1_tdep (void)
77 gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_OSF1,