/* Target-dependent code for DJGPP/i386. Copyright (C) 1988-2017 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 "i386-tdep.h" #include "target-descriptions.h" #include "osabi.h" static void i386_go32_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) { struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch); /* DJGPP doesn't have any special frames for signal handlers. */ tdep->sigtramp_p = NULL; tdep->jb_pc_offset = 36; /* DJGPP does not support the SSE registers. */ if (!tdesc_has_registers (info.target_desc)) tdep->tdesc = tdesc_i386_mmx; /* Native compiler is GCC, which uses the SVR4 register numbering even in COFF and STABS. See the comment in i386_gdbarch_init, before the calls to set_gdbarch_stab_reg_to_regnum and set_gdbarch_sdb_reg_to_regnum. */ set_gdbarch_stab_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum); set_gdbarch_sdb_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum); set_gdbarch_has_dos_based_file_system (gdbarch, 1); set_gdbarch_wchar_bit (gdbarch, 16); set_gdbarch_wchar_signed (gdbarch, 0); } static enum gdb_osabi i386_coff_osabi_sniffer (bfd *abfd) { if (strcmp (bfd_get_target (abfd), "coff-go32-exe") == 0 || strcmp (bfd_get_target (abfd), "coff-go32") == 0) return GDB_OSABI_GO32; return GDB_OSABI_UNKNOWN; } void _initialize_i386_go32_tdep () { gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour, i386_coff_osabi_sniffer); gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_GO32, i386_go32_init_abi); }