1/* Definitions of target machine for GCC.  m68k/ColdFire based uClinux system
2   using ELF objects with special linker post-processing to produce FLAT
3   executables.
4
5   Copyright (C) 2003-2015 Free Software Foundation, Inc.
6
7This file is part of GCC.
8
9GCC is free software; you can redistribute it and/or modify
10it under the terms of the GNU General Public License as published by
11the Free Software Foundation; either version 3, or (at your option)
12any later version.
13
14GCC is distributed in the hope that it will be useful,
15but WITHOUT ANY WARRANTY; without even the implied warranty of
16MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17GNU General Public License for more details.
18
19You should have received a copy of the GNU General Public License
20along with GCC; see the file COPYING3.  If not see
21<http://www.gnu.org/licenses/>.  */
22
23#undef STARTFILE_SPEC
24#define STARTFILE_SPEC \
25"%{mshared-library-id=0|!mshared-library-id=*: crt1.o%s ;: Scrt1.o%s} \
26 crti.o%s crtbegin.o%s"
27
28#undef ENDFILE_SPEC
29#define ENDFILE_SPEC "crtend.o%s crtn.o%s"
30
31/* Override the default LIB_SPEC from gcc.c.  We don't currently support
32   profiling, or libg.a.  */
33#undef LIB_SPEC
34#define LIB_SPEC \
35"%{mid-shared-library:%{!static-libc:-R libc.gdb%s}} %{pthread:-lpthread} -lc"
36
37/* Default to using -elf2flt with no options.  */
38#undef LINK_SPEC
39#define LINK_SPEC \
40"%{!elf2flt*:-elf2flt} \
41 %{mid-shared-library: \
42   %{mshared-library-id=*:-shared-lib-id %*;:-shared-lib-id 0}}"
43
44#undef TARGET_OS_CPP_BUILTINS
45#define TARGET_OS_CPP_BUILTINS()				\
46  do								\
47    {								\
48      GNU_USER_TARGET_OS_CPP_BUILTINS ();			\
49      builtin_define ("__uClinux__");				\
50      if (TARGET_ID_SHARED_LIBRARY)				\
51	{							\
52	  builtin_define ("__ID_SHARED_LIBRARY__");		\
53	  /* Shared libraries and executables do not share	\
54	     typeinfo names.  */				\
55	  builtin_define ("__GXX_MERGED_TYPEINFO_NAMES=0");	\
56	  builtin_define ("__GXX_TYPEINFO_EQUALITY_INLINE=0");	\
57	}							\
58    }								\
59  while (0)
60
61/* -msep-data is the default PIC mode on this target.  */
62#define DRIVER_SELF_SPECS \
63  "%{fpie|fPIE|fpic|fPIC:%{!msep-data:%{!mid-shared-library: -msep-data}}}"
64
65/* The uclinux binary format relies on relocations against a segment being
66   within that segment.  Conservatively apply this rule to individual
67   sections.  */
68#undef M68K_OFFSETS_MUST_BE_WITHIN_SECTIONS_P
69#define M68K_OFFSETS_MUST_BE_WITHIN_SECTIONS_P 1
70