uclinux-elf.h revision 1.1.1.1.4.2 
1/* Definitions for ARM running ucLinux using ELF
2   Copyright (C) 1999, 2001, 2004, 2005, 2007, 2008
3   Free Software Foundation, Inc.
4   Contributed by Philip Blundell <pb@nexus.co.uk>
5
6   This file is part of GCC.
7
8   GCC is free software; you can redistribute it and/or modify it
9   under the terms of the GNU General Public License as published
10   by the Free Software Foundation; either version 3, or (at your
11   option) any later version.
12
13   GCC is distributed in the hope that it will be useful, but WITHOUT
14   ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
15   or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
16   License for more details.
17
18   You should have received a copy of the GNU General Public License
19   along with GCC; see the file COPYING3.  If not see
20   <http://www.gnu.org/licenses/>.  */
21
22/* We don't want a PLT.  */
23#undef  NEED_PLT_RELOC
24#define NEED_PLT_RELOC 0
25
26#undef  TARGET_VERSION
27#define TARGET_VERSION fputs (" (ARM/ELF ucLinux)", stderr);
28
29#undef  TARGET_DEFAULT
30#define TARGET_DEFAULT (MASK_SINGLE_PIC_BASE)
31
32/* NOTE: The remaining definitions in this file are needed because uclinux
33   does not use config/linux.h.  */
34
35/* Add GNU/Linux builtins.  */
36#undef TARGET_OS_CPP_BUILTINS
37#define TARGET_OS_CPP_BUILTINS() 		\
38  do 						\
39    {						\
40      builtin_define ("__uClinux__");		\
41      builtin_define ("__gnu_linux__");         \
42      builtin_define_std ("linux");             \
43      builtin_define_std ("unix");              \
44      builtin_assert ("system=linux");          \
45      builtin_assert ("system=unix");           \
46      builtin_assert ("system=posix");          \
47    }						\
48  while (false)
49
50/* Do not assume anything about header files.  */
51#define NO_IMPLICIT_EXTERN_C
52
53/* The GNU C++ standard library requires that these macros be defined.  */
54#undef CPLUSPLUS_CPP_SPEC
55#define CPLUSPLUS_CPP_SPEC "-D_GNU_SOURCE %(cpp)"
56
57#undef SUBTARGET_EXTRA_LINK_SPEC
58#define SUBTARGET_EXTRA_LINK_SPEC " -m armelf_linux"
59
60/* Now we define the strings used to build the spec file.  */
61#undef  STARTFILE_SPEC
62#define STARTFILE_SPEC	"crt1%O%s crti%O%s crtbegin%O%s"
63
64#undef  ENDFILE_SPEC
65#define ENDFILE_SPEC	"crtend%O%s crtn%O%s"
66
67#undef  CC1_SPEC
68#define CC1_SPEC "%{profile:-p}"
69
70#undef LINK_GCC_C_SEQUENCE_SPEC
71#define LINK_GCC_C_SEQUENCE_SPEC \
72  "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"
73
74/* Use --as-needed -lgcc_s for eh support.  */
75#ifdef HAVE_LD_AS_NEEDED
76#define USE_LD_AS_NEEDED 1
77#endif
78
79#undef LINK_SPEC
80#define LINK_SPEC "%{mbig-endian:-EB} %{mlittle-endian:-EL} -X -elf2flt"
81
82#undef  LIB_SPEC
83#define LIB_SPEC \
84  "%{pthread:-lpthread} \
85   %{shared:-lc} \
86   %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
87
88#define TARGET_DEFAULT_WORD_RELOCATIONS 1
89