1 /* Target-dependent code for NetBSD/arm.
3 Copyright (C) 2002-2013 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/>. */
23 #include "gdb_string.h"
26 #include "solib-svr4.h"
28 /* Description of the longjmp buffer. */
29 #define ARM_NBSD_JB_PC 24
30 #define ARM_NBSD_JB_ELEMENT_SIZE INT_REGISTER_SIZE
32 /* For compatibility with previous implemenations of GDB on arm/NetBSD,
33 override the default little-endian breakpoint. */
34 static const gdb_byte arm_nbsd_arm_le_breakpoint[] = {0x11, 0x00, 0x00, 0xe6};
35 static const gdb_byte arm_nbsd_arm_be_breakpoint[] = {0xe6, 0x00, 0x00, 0x11};
36 static const gdb_byte arm_nbsd_thumb_le_breakpoint[] = {0xfe, 0xde};
37 static const gdb_byte arm_nbsd_thumb_be_breakpoint[] = {0xde, 0xfe};
40 arm_netbsd_init_abi_common (struct gdbarch_info info,
41 struct gdbarch *gdbarch)
43 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
45 tdep->lowest_pc = 0x8000;
46 switch (info.byte_order)
48 case BFD_ENDIAN_LITTLE:
49 tdep->arm_breakpoint = arm_nbsd_arm_le_breakpoint;
50 tdep->thumb_breakpoint = arm_nbsd_thumb_le_breakpoint;
51 tdep->arm_breakpoint_size = sizeof (arm_nbsd_arm_le_breakpoint);
52 tdep->thumb_breakpoint_size = sizeof (arm_nbsd_thumb_le_breakpoint);
56 tdep->arm_breakpoint = arm_nbsd_arm_be_breakpoint;
57 tdep->thumb_breakpoint = arm_nbsd_thumb_be_breakpoint;
58 tdep->arm_breakpoint_size = sizeof (arm_nbsd_arm_be_breakpoint);
59 tdep->thumb_breakpoint_size = sizeof (arm_nbsd_thumb_be_breakpoint);
63 internal_error (__FILE__, __LINE__,
64 _("arm_gdbarch_init: bad byte order for float format"));
67 tdep->jb_pc = ARM_NBSD_JB_PC;
68 tdep->jb_elt_size = ARM_NBSD_JB_ELEMENT_SIZE;
70 /* Single stepping. */
71 set_gdbarch_software_single_step (gdbarch, arm_software_single_step);
75 arm_netbsd_aout_init_abi (struct gdbarch_info info,
76 struct gdbarch *gdbarch)
78 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
80 arm_netbsd_init_abi_common (info, gdbarch);
81 if (tdep->fp_model == ARM_FLOAT_AUTO)
82 tdep->fp_model = ARM_FLOAT_SOFT_FPA;
86 arm_netbsd_elf_init_abi (struct gdbarch_info info,
87 struct gdbarch *gdbarch)
89 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
91 arm_netbsd_init_abi_common (info, gdbarch);
92 if (tdep->fp_model == ARM_FLOAT_AUTO)
93 tdep->fp_model = ARM_FLOAT_SOFT_VFP;
95 /* NetBSD ELF uses SVR4-style shared libraries. */
96 set_solib_svr4_fetch_link_map_offsets
97 (gdbarch, svr4_ilp32_fetch_link_map_offsets);
100 static enum gdb_osabi
101 arm_netbsd_aout_osabi_sniffer (bfd *abfd)
103 if (strcmp (bfd_get_target (abfd), "a.out-arm-netbsd") == 0)
104 return GDB_OSABI_NETBSD_AOUT;
106 return GDB_OSABI_UNKNOWN;
109 /* Provide a prototype to silence -Wmissing-prototypes. */
110 extern initialize_file_ftype _initialize_arm_netbsd_tdep;
113 _initialize_arm_netbsd_tdep (void)
115 gdbarch_register_osabi_sniffer (bfd_arch_arm, bfd_target_aout_flavour,
116 arm_netbsd_aout_osabi_sniffer);
118 gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_NETBSD_AOUT,
119 arm_netbsd_aout_init_abi);
120 gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_NETBSD_ELF,
121 arm_netbsd_elf_init_abi);