1 /* Target-dependent code for OSF/1 on Alpha.
2 Copyright 2002, 2003 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 2 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, write to the Free Software
18 Foundation, Inc., 59 Temple Place - Suite 330,
19 Boston, MA 02111-1307, USA. */
26 #include "gdb_string.h"
29 #include "alpha-tdep.h"
32 alpha_osf1_pc_in_sigtramp (CORE_ADDR pc, char *func_name)
34 return (func_name != NULL && strcmp ("__sigtramp", func_name) == 0);
38 alpha_osf1_sigcontext_addr (struct frame_info *frame)
40 struct frame_info *next_frame = get_next_frame (frame);
42 if (next_frame != NULL)
43 return (read_memory_integer (get_frame_base (next_frame), 8));
45 return (read_memory_integer (get_frame_base (frame), 8));
49 alpha_osf1_init_abi (struct gdbarch_info info,
50 struct gdbarch *gdbarch)
52 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
54 /* Hook into the MDEBUG frame unwinder. */
55 alpha_mdebug_init_abi (info, gdbarch);
57 set_gdbarch_pc_in_sigtramp (gdbarch, alpha_osf1_pc_in_sigtramp);
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
61 set_gdbarch_software_single_step (gdbarch, alpha_software_single_step);
63 tdep->sigcontext_addr = alpha_osf1_sigcontext_addr;
66 tdep->jb_elt_size = 8;
70 _initialize_alpha_osf1_tdep (void)
72 gdbarch_register_osabi (bfd_arch_alpha, 0, GDB_OSABI_OSF1,