summaryrefslogtreecommitdiff
path: root/gdb/arm-wince-tdep.c
blob: 96840afa31786ad9a171b5c185807a2889ba0093 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
/* Target-dependent code for Windows CE running on ARM processors,
   for GDB.

   Copyright (C) 2007 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 "osabi.h"
#include "solib-svr4.h"
#include "target.h"

#include "gdb_string.h"

#include "arm-tdep.h"

static const char arm_wince_le_breakpoint[] = { 0x10, 0x00, 0x00, 0xe6 };
static const char arm_wince_thumb_le_breakpoint[] = { 0xfe, 0xdf };

/* Description of the longjmp buffer.  */
#define ARM_WINCE_JB_ELEMENT_SIZE	INT_REGISTER_SIZE
#define ARM_WINCE_JB_PC			21

static void
arm_wince_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch)
{
  struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);

  tdep->arm_breakpoint = arm_wince_le_breakpoint;
  tdep->arm_breakpoint_size = sizeof (arm_wince_le_breakpoint);
  tdep->thumb_breakpoint = arm_wince_thumb_le_breakpoint;
  tdep->thumb_breakpoint_size = sizeof (arm_wince_thumb_le_breakpoint);
  tdep->struct_return = pcc_struct_return;

  tdep->fp_model = ARM_FLOAT_SOFT_VFP;

  tdep->jb_pc = ARM_WINCE_JB_PC;
  tdep->jb_elt_size = ARM_WINCE_JB_ELEMENT_SIZE;

  /* On ARM WinCE char defaults to signed.  */
  set_gdbarch_char_signed (gdbarch, 1);

  /* Shared library handling.  */
  set_gdbarch_skip_trampoline_code (gdbarch, find_solib_trampoline_target);

  /* Single stepping.  */
  set_gdbarch_software_single_step (gdbarch, arm_software_single_step);
}

static enum gdb_osabi
arm_wince_osabi_sniffer (bfd *abfd)
{
  const char *target_name = bfd_get_target (abfd);

  if (strcmp (target_name, "pei-arm-wince-little") == 0)
    return GDB_OSABI_WINCE;

  return GDB_OSABI_UNKNOWN;
}

/* Provide a prototype to silence -Wmissing-prototypes.  */
void _initialize_arm_wince_tdep (void);

void
_initialize_arm_wince_tdep (void)
{
  gdbarch_register_osabi_sniffer (bfd_arch_arm, bfd_target_coff_flavour,
                                  arm_wince_osabi_sniffer);

  gdbarch_register_osabi (bfd_arch_arm, 0, GDB_OSABI_WINCE,
                          arm_wince_init_abi);
}