1 /* Target-dependent code for Cygwin running on i386's, for GDB.
2 
3    Copyright 2003 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 2 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, write to the Free Software
19    Foundation, Inc., 59 Temple Place - Suite 330,
20    Boston, MA 02111-1307, USA.  */
21 
22 #include "defs.h"
23 #include "osabi.h"
24 
25 #include "gdb_string.h"
26 
27 #include "i386-tdep.h"
28 
29 static CORE_ADDR
30 i386_cygwin_skip_trampoline_code (CORE_ADDR pc)
31 {
32   return i386_pe_skip_trampoline_code (pc, NULL);
33 }
34 
35 static int
36 i386_cygwin_in_solib_call_trampoline (CORE_ADDR pc, char *name)
37 {
38   return (i386_pe_skip_trampoline_code (pc, name) != 0);
39 }
40 
41 static void
42 i386_cygwin_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
43 {
44   struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
45 
46   set_gdbarch_in_solib_call_trampoline (gdbarch,
47                                         i386_cygwin_in_solib_call_trampoline);
48   set_gdbarch_skip_trampoline_code (gdbarch, i386_cygwin_skip_trampoline_code);
49 
50   tdep->struct_return = reg_struct_return;
51 }
52 
53 static enum gdb_osabi
54 i386_cygwin_osabi_sniffer (bfd * abfd)
55 {
56   char *target_name = bfd_get_target (abfd);
57 
58   /* Interix also uses pei-i386.
59      We need a way to distinguish between the two. */
60   if (strcmp (target_name, "pei-i386") == 0)
61     return GDB_OSABI_CYGWIN;
62 
63   return GDB_OSABI_UNKNOWN;
64 }
65 
66 /* Provide a prototype to silence -Wmissing-prototypes.  */
67 void _initialize_i386_cygwin_tdep (void);
68 
69 void
70 _initialize_i386_cygwin_tdep (void)
71 {
72   gdbarch_register_osabi_sniffer (bfd_arch_i386, bfd_target_coff_flavour,
73                                   i386_cygwin_osabi_sniffer);
74 
75   gdbarch_register_osabi (bfd_arch_i386, 0, GDB_OSABI_CYGWIN,
76                           i386_cygwin_init_abi);
77 }
78