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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 #undef TARGET_VERSION
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24 #define TARGET_VERSION fprintf (stderr, " (68k uClinux)");
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25
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26 #undef STARTFILE_SPEC
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27 #define STARTFILE_SPEC \
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28 "%{mshared-library-id=0|!mshared-library-id=*: crt1.o%s ;: Scrt1.o%s} \
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29 crti.o%s crtbegin.o%s"
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30
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31 #undef ENDFILE_SPEC
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32 #define ENDFILE_SPEC "crtend.o%s crtn.o%s"
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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:%{!static-libc:-R libc.gdb%s}} -lc"
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39
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40 /* Default to using -elf2flt with no options. */
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41 #undef LINK_SPEC
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42 #define LINK_SPEC \
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43 "%{!elf2flt*:-elf2flt} \
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44 %{mid-shared-library: \
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45 %{mshared-library-id=*:-shared-lib-id %*;:-shared-lib-id 0}}"
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46
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47 #undef TARGET_OS_CPP_BUILTINS
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48 #define TARGET_OS_CPP_BUILTINS() \
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49 do \
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50 { \
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51 LINUX_TARGET_OS_CPP_BUILTINS (); \
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52 builtin_define ("__uClinux__"); \
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53 if (TARGET_ID_SHARED_LIBRARY) \
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54 { \
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55 builtin_define ("__ID_SHARED_LIBRARY__"); \
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56 /* Shared libraries and executables do not share \
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57 typeinfo names. */ \
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58 builtin_define ("__GXX_MERGED_TYPEINFO_NAMES=0"); \
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59 builtin_define ("__GXX_TYPEINFO_EQUALITY_INLINE=0"); \
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60 } \
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61 } \
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62 while (0)
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63
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64 /* -msep-data is the default PIC mode on this target. */
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65 #define DRIVER_SELF_SPECS \
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66 "%{fpie|fPIE|fpic|fPIC:%{!msep-data:%{!mid-shared-library: -msep-data}}}"
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67
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68 /* The uclinux binary format relies on relocations against a segment being
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69 within that segment. Conservatively apply this rule to individual
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70 sections. */
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71 #undef M68K_OFFSETS_MUST_BE_WITHIN_SECTIONS_P
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72 #define M68K_OFFSETS_MUST_BE_WITHIN_SECTIONS_P 1
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