1 /* Target-dependent code for NetBSD/arm.
3 Copyright (C) 2002-2019 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/>. */
25 #include "solib-svr4.h"
27 /* Description of the longjmp buffer. */
28 #define ARM_NBSD_JB_PC 24
29 #define ARM_NBSD_JB_ELEMENT_SIZE INT_REGISTER_SIZE
31 /* For compatibility with previous implemenations of GDB on arm/NetBSD,
32 override the default little-endian breakpoint. */
33 static const gdb_byte arm_nbsd_arm_le_breakpoint[] = {0x11, 0x00, 0x00, 0xe6};
34 static const gdb_byte arm_nbsd_arm_be_breakpoint[] = {0xe6, 0x00, 0x00, 0x11};
35 static const gdb_byte arm_nbsd_thumb_le_breakpoint[] = {0xfe, 0xde};
36 static const gdb_byte arm_nbsd_thumb_be_breakpoint[] = {0xde, 0xfe};
39 arm_netbsd_init_abi_common (struct gdbarch_info info,
40 struct gdbarch *gdbarch)
42 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
44 tdep->lowest_pc = 0x8000;
45 switch (info.byte_order)
47 case BFD_ENDIAN_LITTLE:
48 tdep->arm_breakpoint = arm_nbsd_arm_le_breakpoint;
49 tdep->thumb_breakpoint = arm_nbsd_thumb_le_breakpoint;
50 tdep->arm_breakpoint_size = sizeof (arm_nbsd_arm_le_breakpoint);
51 tdep->thumb_breakpoint_size = sizeof (arm_nbsd_thumb_le_breakpoint);
55 tdep->arm_breakpoint = arm_nbsd_arm_be_breakpoint;
56 tdep->thumb_breakpoint = arm_nbsd_thumb_be_breakpoint;
57 tdep->arm_breakpoint_size = sizeof (arm_nbsd_arm_be_breakpoint);
58 tdep->thumb_breakpoint_size = sizeof (arm_nbsd_thumb_be_breakpoint);
62 internal_error (__FILE__, __LINE__,
63 _("arm_gdbarch_init: bad byte order for float format"));
66 tdep->jb_pc = ARM_NBSD_JB_PC;
67 tdep->jb_elt_size = ARM_NBSD_JB_ELEMENT_SIZE;
69 /* Single stepping. */
70 set_gdbarch_software_single_step (gdbarch, arm_software_single_step);
74 arm_netbsd_elf_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_VFP;
83 /* NetBSD ELF uses SVR4-style shared libraries. */
84 set_solib_svr4_fetch_link_map_offsets
85 (gdbarch, svr4_ilp32_fetch_link_map_offsets);
89 _initialize_arm_netbsd_tdep (void)
91 gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_NETBSD,
92 arm_netbsd_elf_init_abi);