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/* Target-dependent code for DJGPP/i386.
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Copyright (C) 1988-2022 Free Software Foundation, Inc.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include "defs.h"
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#include "i386-tdep.h"
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#include "gdbsupport/x86-xstate.h"
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#include "target-descriptions.h"
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#include "osabi.h"
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static void
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i386_go32_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
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{
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i386_gdbarch_tdep *tdep = (i386_gdbarch_tdep *) gdbarch_tdep (gdbarch);
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/* DJGPP doesn't have any special frames for signal handlers. */
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tdep->sigtramp_p = NULL;
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tdep->jb_pc_offset = 36;
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/* DJGPP does not support the SSE registers. */
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if (!tdesc_has_registers (info.target_desc))
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tdep->tdesc = i386_target_description (X86_XSTATE_X87_MASK, false);
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/* Native compiler is GCC, which uses the SVR4 register numbering
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even in COFF and STABS. See the comment in i386_gdbarch_init,
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before the calls to set_gdbarch_stab_reg_to_regnum and
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set_gdbarch_sdb_reg_to_regnum. */
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set_gdbarch_stab_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum);
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set_gdbarch_sdb_reg_to_regnum (gdbarch, i386_svr4_reg_to_regnum);
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set_gdbarch_has_dos_based_file_system (gdbarch, 1);
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set_gdbarch_wchar_bit (gdbarch, 16);
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set_gdbarch_wchar_signed (gdbarch, 0);
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}
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static enum gdb_osabi
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i386_coff_osabi_sniffer (bfd *abfd)
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{
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if (strcmp (bfd_get_target (abfd), "coff-go32-exe") == 0
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|| strcmp (bfd_get_target (abfd), "coff-go32") == 0)
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return GDB_OSABI_GO32;
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return GDB_OSABI_UNKNOWN;
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}
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void _initialize_i386_go32_tdep ();
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void
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_initialize_i386_go32_tdep ()
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{
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gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
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i386_coff_osabi_sniffer);
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gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_GO32,
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i386_go32_init_abi);
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}
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