1 /* Target-dependent code for DJGPP/i386.
3 Copyright (C) 1988-2019 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/>. */
21 #include "i386-tdep.h"
22 #include "common/x86-xstate.h"
23 #include "target-descriptions.h"
27 i386_go32_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
29 struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
31 /* DJGPP doesn't have any special frames for signal handlers. */
32 tdep->sigtramp_p = NULL;
34 tdep->jb_pc_offset = 36;
36 /* DJGPP does not support the SSE registers. */
37 if (!tdesc_has_registers (info.target_desc))
38 tdep->tdesc = i386_target_description (X86_XSTATE_X87_MASK, false);
40 /* Native compiler is GCC, which uses the SVR4 register numbering
41 even in COFF and STABS. See the comment in i386_gdbarch_init,
42 before the calls to set_gdbarch_stab_reg_to_regnum and
43 set_gdbarch_sdb_reg_to_regnum. */
44 set_gdbarch_stab_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum);
45 set_gdbarch_sdb_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum);
47 set_gdbarch_has_dos_based_file_system (gdbarch, 1);
49 set_gdbarch_wchar_bit (gdbarch, 16);
50 set_gdbarch_wchar_signed (gdbarch, 0);
55 i386_coff_osabi_sniffer (bfd *abfd)
57 if (strcmp (bfd_get_target (abfd), "coff-go32-exe") == 0
58 || strcmp (bfd_get_target (abfd), "coff-go32") == 0)
59 return GDB_OSABI_GO32;
61 return GDB_OSABI_UNKNOWN;
66 _initialize_i386_go32_tdep ()
68 gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
69 i386_coff_osabi_sniffer);
71 gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_GO32,