131
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1 /* Definitions of target machine of Andes NDS32 cpu for GNU compiler
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2 Copyright (C) 2012-2014 Free Software Foundation, Inc.
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3 Contributed by Andes Technology Corporation.
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify it
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8 under the terms of the GNU General Public License as published
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9 by the Free Software Foundation; either version 3, or (at your
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10 option) any later version.
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11
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12 GCC is distributed in the hope that it will be useful, but WITHOUT
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13 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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14 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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15 License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with GCC; see the file COPYING3. If not see
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19 <http://www.gnu.org/licenses/>. */
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20
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21
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22 /* ------------------------------------------------------------------------ */
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23
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24 #define TARGET_LINUX_ABI 0
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25
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26 /* In the configure stage we may use options --enable-default-relax,
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27 --enable-Os-default-ifc and --enable-Os-default-ex9. They effect
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28 the default spec of passing --relax, --mifc, and --mex9 to linker.
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29 We use NDS32_RELAX_SPEC, NDS32_IFC_SPEC, and NDS32_EX9_SPEC
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30 so that we can customize them conveniently. */
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31 #define LINK_SPEC \
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32 " %{G*}" \
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33 " %{mbig-endian:-EB} %{mlittle-endian:-EL}" \
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34 " %{shared:-shared}" \
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35 NDS32_RELAX_SPEC
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36
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37 #define LIB_SPEC \
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38 " -lc -lgloss"
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39
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40 #define LIBGCC_SPEC \
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41 " -lgcc"
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42
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43 /* The option -mno-ctor-dtor can disable constructor/destructor feature
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44 by applying different crt stuff. In the convention, crt0.o is the
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45 startup file without constructor/destructor;
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46 crt1.o, crti.o, crtbegin.o, crtend.o, and crtn.o are the
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47 startup files with constructor/destructor.
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48 Note that crt0.o, crt1.o, crti.o, and crtn.o are provided
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49 by newlib/mculib/glibc/ublic, while crtbegin.o and crtend.o are
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50 currently provided by GCC for nds32 target.
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51
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52 For nds32 target so far:
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53 If -mno-ctor-dtor, we are going to link
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54 "crt0.o [user objects]".
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55 If -mctor-dtor, we are going to link
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56 "crt1.o crtbegin1.o [user objects] crtend1.o".
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57
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58 Note that the TARGET_DEFAULT_CTOR_DTOR would effect the
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59 default behavior. Check gcc/config.gcc for more information. */
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60 #ifdef TARGET_DEFAULT_CTOR_DTOR
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61 #define STARTFILE_SPEC \
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62 " %{!mno-ctor-dtor:crt1.o%s;:crt0.o%s}" \
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63 " %{!mno-ctor-dtor:crtbegin1.o%s}" \
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64 " %{mcrt-arg:crtarg.o%s}"
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65 #define ENDFILE_SPEC \
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66 " %{!mno-ctor-dtor:crtend1.o%s}"
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67 #else
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68 #define STARTFILE_SPEC \
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69 " %{mctor-dtor|coverage:crt1.o%s;:crt0.o%s}" \
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70 " %{mctor-dtor|coverage:crtbegin1.o%s}" \
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71 " %{mcrt-arg:crtarg.o%s}"
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72 #define ENDFILE_SPEC \
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73 " %{mctor-dtor|coverage:crtend1.o%s}"
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74 #endif
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75
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76 #define STARTFILE_CXX_SPEC \
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77 " %{!mno-ctor-dtor:crt1.o%s;:crt0.o%s}" \
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78 " %{!mno-ctor-dtor:crtbegin1.o%s}" \
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79 " %{mcrt-arg:crtarg.o%s}"
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80 #define ENDFILE_CXX_SPEC \
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81 " %{!mno-ctor-dtor:crtend1.o%s}"
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