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i386-go32-tdep.c
Go to the documentation of this file.
1/* Target-dependent code for DJGPP/i386.
2
3 Copyright (C) 1988-2023 Free Software Foundation, Inc.
4
5 This file is part of GDB.
6
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.
11
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.
16
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/>. */
19
20#include "defs.h"
21#include "i386-tdep.h"
22#include "gdbsupport/x86-xstate.h"
23#include "target-descriptions.h"
24#include "osabi.h"
25
26static void
28{
29 i386_gdbarch_tdep *tdep = gdbarch_tdep<i386_gdbarch_tdep> (gdbarch);
30
31 /* DJGPP doesn't have any special frames for signal handlers. */
32 tdep->sigtramp_p = NULL;
33
34 tdep->jb_pc_offset = 36;
35
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);
39
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. */
46
48
51}
52
53
54static enum gdb_osabi
56{
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;
60
61 return GDB_OSABI_UNKNOWN;
62}
63
64
66void
68{
69 gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
71
72 gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_GO32,
74}
void set_gdbarch_stab_reg_to_regnum(struct gdbarch *gdbarch, gdbarch_stab_reg_to_regnum_ftype *stab_reg_to_regnum)
void set_gdbarch_wchar_bit(struct gdbarch *gdbarch, int wchar_bit)
Definition gdbarch.c:1680
void set_gdbarch_has_dos_based_file_system(struct gdbarch *gdbarch, int has_dos_based_file_system)
Definition gdbarch.c:5000
void set_gdbarch_wchar_signed(struct gdbarch *gdbarch, int wchar_signed)
Definition gdbarch.c:1698
void set_gdbarch_sdb_reg_to_regnum(struct gdbarch *gdbarch, gdbarch_sdb_reg_to_regnum_ftype *sdb_reg_to_regnum)
void _initialize_i386_go32_tdep()
static enum gdb_osabi i386_coff_osabi_sniffer(bfd *abfd)
static void i386_go32_init_abi(struct gdbarch_info info, struct gdbarch *gdbarch)
int i386_svr4_reg_to_regnum(struct gdbarch *gdbarch, int reg)
Definition i386-tdep.c:578
const struct target_desc * i386_target_description(uint64_t xcr0, bool segments)
Definition i386-tdep.c:8957
void gdbarch_register_osabi(enum bfd_architecture arch, unsigned long machine, enum gdb_osabi osabi, void(*init_osabi)(struct gdbarch_info, struct gdbarch *))
Definition osabi.c:146
void gdbarch_register_osabi_sniffer(enum bfd_architecture arch, enum bfd_flavour flavour, enum gdb_osabi(*sniffer_fn)(bfd *))
Definition osabi.c:220
gdb_osabi
Definition osabi.h:25
@ GDB_OSABI_UNKNOWN
Definition osabi.h:26
@ GDB_OSABI_GO32
Definition osabi.h:37
int(* sigtramp_p)(frame_info_ptr)
Definition i386-tdep.h:230
const struct target_desc * tdesc
Definition i386-tdep.h:214
int tdesc_has_registers(const struct target_desc *target_desc)