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1 /* Definitions for TI C6X running ucLinux using ELF
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2 Copyright (C) 2010-2018 Free Software Foundation, Inc.
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3 Contributed by Andrew Jenner <andrew@codesourcery.com>
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4 Contributed by Bernd Schmidt <bernds@codesourcery.com>
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify it
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9 under the terms of the GNU General Public License as published
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10 by the Free Software Foundation; either version 3, or (at your
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11 option) any later version.
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12
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13 GCC is distributed in the hope that it will be useful, but WITHOUT
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14 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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15 or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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16 License for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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21
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22 #undef TARGET_OS_CPP_BUILTINS
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23 #define TARGET_OS_CPP_BUILTINS() \
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24 do \
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25 { \
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26 builtin_define ("__uClinux__"); \
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27 builtin_define_std ("linux"); \
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28 builtin_define_std ("unix"); \
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29 builtin_assert ("system=linux"); \
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30 builtin_assert ("system=unix"); \
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31 builtin_assert ("system=posix"); \
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32 } \
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33 while (false)
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34
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35 #undef STARTFILE_SPEC
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36 #define STARTFILE_SPEC \
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37 "%{!shared:crt1%O%s} crti%O%s %{shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
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38
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39 #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
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40
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41 #undef LINK_SPEC
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42 #define LINK_SPEC ENDIAN_LINK_SPEC \
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43 "%{shared} %{" FPIE_SPEC ":-pie} \
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44 %{!shared: %{!static: \
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45 %{rdynamic:-export-dynamic} \
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46 %{!dynamic-linker:-dynamic-linker " UCLIBC_DYNAMIC_LINKER "}} \
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47 %{static}}"
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48
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49 #undef DRIVER_SELF_SPECS
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50 #define DRIVER_SELF_SPECS "%{!mno-dsbt:-mdsbt}"
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51
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52 /* Clear the instruction cache from `beg' to `end'. This makes an
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53 inline system call to SYS_cacheflush. */
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54 #undef CLEAR_INSN_CACHE
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55 #define CLEAR_INSN_CACHE(BEG, END) \
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56 { \
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57 register unsigned long _beg __asm ("A4") = (unsigned long) (BEG); \
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58 register unsigned long _end __asm ("B4") = (unsigned long) (END); \
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59 register unsigned long _scno __asm ("B0") = 244; \
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60 __asm __volatile ("swe ; sys_cache_sync" \
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61 : "=a" (_beg) \
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62 : "0" (_beg), "b" (_end), "b" (_scno)); \
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63 }
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