1 /* Target-dependent code for NetBSD/arm.
3 Copyright (C) 2002, 2003, 2004, 2006, 2007 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 2 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, write to the Free Software
19 Foundation, Inc., 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
25 #include "gdb_string.h"
28 #include "solib-svr4.h"
30 /* Description of the longjmp buffer. */
31 #define ARM_NBSD_JB_PC 24
32 #define ARM_NBSD_JB_ELEMENT_SIZE INT_REGISTER_SIZE
34 /* For compatibility with previous implemenations of GDB on arm/NetBSD,
35 override the default little-endian breakpoint. */
36 static const char arm_nbsd_arm_le_breakpoint
[] = {0x11, 0x00, 0x00, 0xe6};
37 static const char arm_nbsd_arm_be_breakpoint
[] = {0xe6, 0x00, 0x00, 0x11};
38 static const char arm_nbsd_thumb_le_breakpoint
[] = {0xfe, 0xde};
39 static const char arm_nbsd_thumb_be_breakpoint
[] = {0xde, 0xfe};
42 arm_netbsd_init_abi_common (struct gdbarch_info info
,
43 struct gdbarch
*gdbarch
)
45 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
47 tdep
->lowest_pc
= 0x8000;
48 switch (info
.byte_order
)
50 case BFD_ENDIAN_LITTLE
:
51 tdep
->arm_breakpoint
= arm_nbsd_arm_le_breakpoint
;
52 tdep
->thumb_breakpoint
= arm_nbsd_thumb_le_breakpoint
;
53 tdep
->arm_breakpoint_size
= sizeof (arm_nbsd_arm_le_breakpoint
);
54 tdep
->thumb_breakpoint_size
= sizeof (arm_nbsd_thumb_le_breakpoint
);
58 tdep
->arm_breakpoint
= arm_nbsd_arm_be_breakpoint
;
59 tdep
->thumb_breakpoint
= arm_nbsd_thumb_be_breakpoint
;
60 tdep
->arm_breakpoint_size
= sizeof (arm_nbsd_arm_be_breakpoint
);
61 tdep
->thumb_breakpoint_size
= sizeof (arm_nbsd_thumb_be_breakpoint
);
65 internal_error (__FILE__
, __LINE__
,
66 _("arm_gdbarch_init: bad byte order for float format"));
69 tdep
->jb_pc
= ARM_NBSD_JB_PC
;
70 tdep
->jb_elt_size
= ARM_NBSD_JB_ELEMENT_SIZE
;
74 arm_netbsd_aout_init_abi (struct gdbarch_info info
,
75 struct gdbarch
*gdbarch
)
77 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
79 arm_netbsd_init_abi_common (info
, gdbarch
);
80 if (tdep
->fp_model
== ARM_FLOAT_AUTO
)
81 tdep
->fp_model
= ARM_FLOAT_SOFT_FPA
;
85 arm_netbsd_elf_init_abi (struct gdbarch_info info
,
86 struct gdbarch
*gdbarch
)
88 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
90 arm_netbsd_init_abi_common (info
, gdbarch
);
91 if (tdep
->fp_model
== ARM_FLOAT_AUTO
)
92 tdep
->fp_model
= ARM_FLOAT_SOFT_VFP
;
94 /* NetBSD ELF uses SVR4-style shared libraries. */
95 set_solib_svr4_fetch_link_map_offsets
96 (gdbarch
, svr4_ilp32_fetch_link_map_offsets
);
100 arm_netbsd_aout_osabi_sniffer (bfd
*abfd
)
102 if (strcmp (bfd_get_target (abfd
), "a.out-arm-netbsd") == 0)
103 return GDB_OSABI_NETBSD_AOUT
;
105 return GDB_OSABI_UNKNOWN
;
109 _initialize_arm_netbsd_tdep (void)
111 gdbarch_register_osabi_sniffer (bfd_arch_arm
, bfd_target_aout_flavour
,
112 arm_netbsd_aout_osabi_sniffer
);
114 gdbarch_register_osabi (bfd_arch_arm
, 0, GDB_OSABI_NETBSD_AOUT
,
115 arm_netbsd_aout_init_abi
);
116 gdbarch_register_osabi (bfd_arch_arm
, 0, GDB_OSABI_NETBSD_ELF
,
117 arm_netbsd_elf_init_abi
);