/* Target-dependent code for NetBSD/arm. Copyright (C) 2002, 2003, 2004, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. This file is part of GDB. This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program. If not, see <http://www.gnu.org/licenses/>. */ #include "defs.h" #include "osabi.h" #include "gdb_string.h" #include "arm-tdep.h" #include "solib-svr4.h" /* Description of the longjmp buffer. */ #define ARM_NBSD_JB_PC 24 #define ARM_NBSD_JB_ELEMENT_SIZE INT_REGISTER_SIZE /* For compatibility with previous implemenations of GDB on arm/NetBSD, override the default little-endian breakpoint. */ static const char arm_nbsd_arm_le_breakpoint[] = {0x11, 0x00, 0x00, 0xe6}; static const char arm_nbsd_arm_be_breakpoint[] = {0xe6, 0x00, 0x00, 0x11}; static const char arm_nbsd_thumb_le_breakpoint[] = {0xfe, 0xde}; static const char arm_nbsd_thumb_be_breakpoint[] = {0xde, 0xfe}; static void arm_netbsd_init_abi_common (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); tdep->lowest_pc = 0x8000; switch (info.byte_order) { case BFD_ENDIAN_LITTLE: tdep->arm_breakpoint = arm_nbsd_arm_le_breakpoint; tdep->thumb_breakpoint = arm_nbsd_thumb_le_breakpoint; tdep->arm_breakpoint_size = sizeof (arm_nbsd_arm_le_breakpoint); tdep->thumb_breakpoint_size = sizeof (arm_nbsd_thumb_le_breakpoint); break; case BFD_ENDIAN_BIG: tdep->arm_breakpoint = arm_nbsd_arm_be_breakpoint; tdep->thumb_breakpoint = arm_nbsd_thumb_be_breakpoint; tdep->arm_breakpoint_size = sizeof (arm_nbsd_arm_be_breakpoint); tdep->thumb_breakpoint_size = sizeof (arm_nbsd_thumb_be_breakpoint); break; default: internal_error (__FILE__, __LINE__, _("arm_gdbarch_init: bad byte order for float format")); } tdep->jb_pc = ARM_NBSD_JB_PC; tdep->jb_elt_size = ARM_NBSD_JB_ELEMENT_SIZE; /* Single stepping. */ set_gdbarch_software_single_step (gdbarch, arm_software_single_step); } static void arm_netbsd_aout_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); arm_netbsd_init_abi_common (info, gdbarch); if (tdep->fp_model == ARM_FLOAT_AUTO) tdep->fp_model = ARM_FLOAT_SOFT_FPA; } static void arm_netbsd_elf_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); arm_netbsd_init_abi_common (info, gdbarch); if (tdep->fp_model == ARM_FLOAT_AUTO) tdep->fp_model = ARM_FLOAT_SOFT_VFP; /* NetBSD ELF uses SVR4-style shared libraries. */ set_solib_svr4_fetch_link_map_offsets (gdbarch, svr4_ilp32_fetch_link_map_offsets); } static enum gdb_osabi arm_netbsd_aout_osabi_sniffer (bfd *abfd) { if (strcmp (bfd_get_target (abfd), "a.out-arm-netbsd") == 0) return GDB_OSABI_NETBSD_AOUT; return GDB_OSABI_UNKNOWN; } /* Provide a prototype to silence -Wmissing-prototypes. */ extern initialize_file_ftype _initialize_arm_netbsd_tdep; void _initialize_arm_netbsd_tdep (void) { gdbarch_register_osabi_sniffer (bfd_arch_arm, bfd_target_aout_flavour, arm_netbsd_aout_osabi_sniffer); gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_NETBSD_AOUT, arm_netbsd_aout_init_abi); gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_NETBSD_ELF, arm_netbsd_elf_init_abi); }