1 /* Target-specific functions for ARM running under NetBSD.
3 Copyright 2002, 2003, 2004 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., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
25 #include "gdb_string.h"
28 #include "nbsd-tdep.h"
29 #include "solib-svr4.h"
31 /* Description of the longjmp buffer. */
32 #define ARM_NBSD_JB_PC 24
33 #define ARM_NBSD_JB_ELEMENT_SIZE INT_REGISTER_SIZE
35 /* For compatibility with previous implemenations of GDB on arm/NetBSD,
36 override the default little-endian breakpoint. */
37 static const char arm_nbsd_arm_le_breakpoint[] = {0x11, 0x00, 0x00, 0xe6};
38 static const char arm_nbsd_arm_be_breakpoint[] = {0xe6, 0x00, 0x00, 0x11};
39 static const char arm_nbsd_thumb_le_breakpoint[] = {0xfe, 0xde};
40 static const char arm_nbsd_thumb_be_breakpoint[] = {0xde, 0xfe};
43 arm_netbsd_aout_in_solib_call_trampoline (CORE_ADDR pc, char *name)
45 if (strcmp (name, "_PROCEDURE_LINKAGE_TABLE_") == 0)
52 arm_netbsd_init_abi_common (struct gdbarch_info info,
53 struct gdbarch *gdbarch)
55 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
57 tdep->lowest_pc = 0x8000;
58 switch (info.byte_order)
60 case BFD_ENDIAN_LITTLE:
61 tdep->arm_breakpoint = arm_nbsd_arm_le_breakpoint;
62 tdep->thumb_breakpoint = arm_nbsd_thumb_le_breakpoint;
63 tdep->arm_breakpoint_size = sizeof (arm_nbsd_arm_le_breakpoint);
64 tdep->thumb_breakpoint_size = sizeof (arm_nbsd_thumb_le_breakpoint);
68 tdep->arm_breakpoint = arm_nbsd_arm_be_breakpoint;
69 tdep->thumb_breakpoint = arm_nbsd_thumb_be_breakpoint;
70 tdep->arm_breakpoint_size = sizeof (arm_nbsd_arm_be_breakpoint);
71 tdep->thumb_breakpoint_size = sizeof (arm_nbsd_thumb_be_breakpoint);
75 internal_error (__FILE__, __LINE__,
76 "arm_gdbarch_init: bad byte order for float format");
79 tdep->jb_pc = ARM_NBSD_JB_PC;
80 tdep->jb_elt_size = ARM_NBSD_JB_ELEMENT_SIZE;
84 arm_netbsd_aout_init_abi (struct gdbarch_info info,
85 struct gdbarch *gdbarch)
87 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
89 arm_netbsd_init_abi_common (info, gdbarch);
91 set_gdbarch_in_solib_call_trampoline
92 (gdbarch, arm_netbsd_aout_in_solib_call_trampoline);
93 tdep->fp_model = ARM_FLOAT_SOFT_FPA;
97 arm_netbsd_elf_init_abi (struct gdbarch_info info,
98 struct gdbarch *gdbarch)
100 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
102 arm_netbsd_init_abi_common (info, gdbarch);
104 set_solib_svr4_fetch_link_map_offsets (gdbarch,
105 nbsd_ilp32_solib_svr4_fetch_link_map_offsets);
107 tdep->fp_model = ARM_FLOAT_SOFT_VFP;
110 static enum gdb_osabi
111 arm_netbsd_aout_osabi_sniffer (bfd *abfd)
113 if (strcmp (bfd_get_target (abfd), "a.out-arm-netbsd") == 0)
114 return GDB_OSABI_NETBSD_AOUT;
116 return GDB_OSABI_UNKNOWN;
120 _initialize_arm_netbsd_tdep (void)
122 gdbarch_register_osabi_sniffer (bfd_arch_arm, bfd_target_aout_flavour,
123 arm_netbsd_aout_osabi_sniffer);
125 gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_NETBSD_AOUT,
126 arm_netbsd_aout_init_abi);
127 gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_NETBSD_ELF,
128 arm_netbsd_elf_init_abi);