1 /* Target-dependent code for Windows CE running on ARM processors,
4 Copyright (C) 2007 Free Software Foundation, Inc.
6 This file is part of GDB.
8 This program is free software; you can redistribute it and/or modify
9 it under the terms of the GNU General Public License as published by
10 the Free Software Foundation; either version 3 of the License, or
11 (at your option) any later version.
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 GNU General Public License for more details.
18 You should have received a copy of the GNU General Public License
19 along with this program. If not, see <http://www.gnu.org/licenses/>. */
26 #include "gdb_string.h"
30 static const char arm_wince_le_breakpoint
[] = { 0x10, 0x00, 0x00, 0xe6 };
31 static const char arm_wince_thumb_le_breakpoint
[] = { 0xfe, 0xdf };
33 /* Description of the longjmp buffer. */
34 #define ARM_WINCE_JB_ELEMENT_SIZE INT_REGISTER_SIZE
35 #define ARM_WINCE_JB_PC 10
38 arm_pe_skip_trampoline_code (struct frame_info
*frame
, CORE_ADDR pc
)
41 struct minimal_symbol
*indsym
;
45 /* The format of an ARM DLL trampoline is:
51 || read_memory_unsigned_integer (pc
+ 0, 4) != 0xe59fc000
52 || read_memory_unsigned_integer (pc
+ 4, 4) != 0xe59cf000)
55 indirect
= read_memory_unsigned_integer (pc
+ 8, 4);
59 indsym
= lookup_minimal_symbol_by_pc (indirect
);
63 symname
= SYMBOL_LINKAGE_NAME (indsym
);
64 if (symname
== NULL
|| strncmp (symname
, "__imp_", 6) != 0)
67 next_pc
= read_memory_unsigned_integer (indirect
, 4);
71 /* Check with the default arm gdbarch_skip_trampoline. */
72 return arm_skip_stub (frame
, pc
);
76 arm_wince_init_abi (struct gdbarch_info info
, struct gdbarch
*gdbarch
)
78 struct gdbarch_tdep
*tdep
= gdbarch_tdep (gdbarch
);
80 tdep
->arm_breakpoint
= arm_wince_le_breakpoint
;
81 tdep
->arm_breakpoint_size
= sizeof (arm_wince_le_breakpoint
);
82 tdep
->thumb_breakpoint
= arm_wince_thumb_le_breakpoint
;
83 tdep
->thumb_breakpoint_size
= sizeof (arm_wince_thumb_le_breakpoint
);
84 tdep
->struct_return
= pcc_struct_return
;
86 tdep
->fp_model
= ARM_FLOAT_SOFT_VFP
;
88 tdep
->jb_pc
= ARM_WINCE_JB_PC
;
89 tdep
->jb_elt_size
= ARM_WINCE_JB_ELEMENT_SIZE
;
91 /* On ARM WinCE char defaults to signed. */
92 set_gdbarch_char_signed (gdbarch
, 1);
94 /* Shared library handling. */
95 set_gdbarch_skip_trampoline_code (gdbarch
, arm_pe_skip_trampoline_code
);
97 /* Single stepping. */
98 set_gdbarch_software_single_step (gdbarch
, arm_software_single_step
);
101 static enum gdb_osabi
102 arm_wince_osabi_sniffer (bfd
*abfd
)
104 const char *target_name
= bfd_get_target (abfd
);
106 if (strcmp (target_name
, "pei-arm-wince-little") == 0)
107 return GDB_OSABI_WINCE
;
109 return GDB_OSABI_UNKNOWN
;
112 /* Provide a prototype to silence -Wmissing-prototypes. */
113 void _initialize_arm_wince_tdep (void);
116 _initialize_arm_wince_tdep (void)
118 gdbarch_register_osabi_sniffer (bfd_arch_arm
, bfd_target_coff_flavour
,
119 arm_wince_osabi_sniffer
);
121 gdbarch_register_osabi (bfd_arch_arm
, 0, GDB_OSABI_WINCE
,