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1 /* Definitions of target machine for GCC. m68k/ColdFire based uClinux system
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2 using ELF objects with special linker post-processing to produce FLAT
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3 executables.
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4
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5 Copyright (C) 2003, 2007 Free Software Foundation, Inc.
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6
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7 This file is part of GCC.
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8
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9 GCC is free software; you can redistribute it and/or modify
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10 it under the terms of the GNU General Public License as published by
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11 the Free Software Foundation; either version 3, or (at your option)
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12 any later version.
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13
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14 GCC is distributed in the hope that it will be useful,
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15 but WITHOUT ANY WARRANTY; without even the implied warranty of
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16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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17 GNU General Public License for more details.
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18
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19 You should have received a copy of the GNU General Public License
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20 along with GCC; see the file COPYING3. If not see
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21 <http://www.gnu.org/licenses/>. */
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22
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23
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24 /* The old uClinux ABI used 80-byte "long double"s for ColdFire too. */
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25 #undef LONG_DOUBLE_TYPE_SIZE
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26 #define LONG_DOUBLE_TYPE_SIZE 80
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27 #undef LIBGCC2_LONG_DOUBLE_TYPE_SIZE
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28 #define LIBGCC2_LONG_DOUBLE_TYPE_SIZE 80
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29
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30 /* Undo the definition of STARTFILE_SPEC from m68kelf.h so we'll
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31 pick the default from gcc.c (just link crt0.o from multilib dir). */
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32 #undef STARTFILE_SPEC
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33
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34 /* Override the default LIB_SPEC from gcc.c. We don't currently support
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35 profiling, or libg.a. */
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36 #undef LIB_SPEC
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37 #define LIB_SPEC "\
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38 %{mid-shared-library:-R libc.gdb%s -elf2flt -shared-lib-id 0} -lc \
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39 "
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40
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41 /* we don't want a .eh_frame section. */
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42 #define EH_FRAME_IN_DATA_SECTION
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43
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44 /* ??? Quick hack to get constructors working. Make this look more like a
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45 COFF target, so the existing dejagnu/libgloss support works. A better
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46 solution would be to make the necessary dejagnu and libgloss changes so
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47 that we can use normal the ELF constructor mechanism. */
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48 #undef INIT_SECTION_ASM_OP
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49 #undef FINI_SECTION_ASM_OP
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50 #undef ENDFILE_SPEC
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51 #define ENDFILE_SPEC ""
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52
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53 /* Bring in standard linux defines */
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54 #undef TARGET_OS_CPP_BUILTINS
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55 #define TARGET_OS_CPP_BUILTINS() \
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56 do \
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57 { \
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58 builtin_define_std ("mc68000"); \
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59 builtin_define ("__uClinux__"); \
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60 builtin_define_std ("linux"); \
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61 builtin_define_std ("unix"); \
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62 builtin_define ("__gnu_linux__"); \
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63 builtin_assert ("system=linux"); \
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64 builtin_assert ("system=unix"); \
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65 builtin_assert ("system=posix"); \
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66 if (TARGET_ID_SHARED_LIBRARY) \
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67 builtin_define ("__ID_SHARED_LIBRARY__"); \
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68 } \
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69 while (0)
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70
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