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1 /* Definitions for TILE-Gx running Linux-based GNU systems with ELF.
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2 Copyright (C) 2011-2018 Free Software Foundation, Inc.
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3 Contributed by Walter Lee (walt@tilera.com)
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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 #undef CPP_SPEC
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22 #define CPP_SPEC "%{pthread:-D_REENTRANT}"
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23
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24 #undef ASM_SPEC
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25 #define ASM_SPEC "%(endian_spec) %{m32:--32} %{m64:--64}"
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26
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27 #undef LINK_SPEC
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28 #define LINK_SPEC "%(endian_spec) \
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29 %{m64:-m elf64tilegx} %{m32:-m elf32tilegx} \
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30 %{shared:-shared} \
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31 %{!shared: \
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32 %{!static: \
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33 %{rdynamic:-export-dynamic} \
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34 -dynamic-linker \
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35 %{ m32: /lib32/ld.so.1} \
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36 %{!m32: /lib/ld.so.1}} \
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37 %{static:-static}}"
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38
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39 #define MULTILIB_DEFAULTS { "m64" }
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40
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41 #define NO_PROFILE_COUNTERS 1
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42
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43 #undef MCOUNT_NAME
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44 #define MCOUNT_NAME "__mcount"
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45
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46 #undef NEED_INDICATE_EXEC_STACK
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47 #define NEED_INDICATE_EXEC_STACK 1
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48
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49 #ifdef TARGET_LIBC_PROVIDES_SSP
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50 /* TILE-Gx glibc provides __stack_chk_guard two pointer-size words before
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51 tp. */
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52 #define TARGET_THREAD_SSP_OFFSET (-2 * GET_MODE_SIZE (ptr_mode))
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53 #endif
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54
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55 /* For __clear_cache in libgcc2.c. */
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56 #ifdef IN_LIBGCC2
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57
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58 /* Use the minimum page size of 4K. Alternatively we can call
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59 getpagesize() but it introduces a libc dependence.
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60 See Linux arch/tile/include/uapi/arch/icache.h for more commentary. */
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61 #undef CLEAR_INSN_CACHE
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62 #define CLEAR_INSN_CACHE(BEG, END) \
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63 { \
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64 long size = (long) (END) - (long) (BEG); \
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65 if (size) \
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66 { \
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67 const char *p = (const char *) ((unsigned long) (BEG) & -64L); \
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68 const char *end = p + (size < 4096 ? size : 4096) - 1; \
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69 __insn_mf (); \
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70 for (; p <= end; p += 64) \
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71 __insn_icoh (p); \
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72 __insn_drain (); \
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73 } \
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74 }
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75
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76 #else
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77
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78 /* define CLEAR_INSN_CACHE so that gcc knows to expand __builtin__clear_cache
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79 to the libraray call. */
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80 #undef CLEAR_INSN_CACHE
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81 #define CLEAR_INSN_CACHE 1
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82
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83 #endif
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