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/* Target-dependent code for DJGPP/i386.
Copyright (C) 1988-2020 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 "gdbsupport/x86-xstate.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 = i386_target_description (X86_XSTATE_X87_MASK, false);
/* 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);
}
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