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c6x
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uclinux-elf.h

uclinux-elf.h 2.2 KB
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  1. /* Definitions for TI C6X running ucLinux using ELF
    2. 

  2.    Copyright (C) 2010-2015 Free Software Foundation, Inc.
    3. 

  3.    Contributed by Andrew Jenner <andrew@codesourcery.com>
    4. 

  4.    Contributed by Bernd Schmidt <bernds@codesourcery.com>
    5. 

  5. 

  6.    This file is part of GCC.
    7. 

  7. 

  8.    GCC is free software; you can redistribute it and/or modify it
    9. 

  9.    under the terms of the GNU General Public License as published
    10. 

  10.    by the Free Software Foundation; either version 3, or (at your
    11. 

  11.    option) any later version.
    12. 

  12. 

  13.    GCC is distributed in the hope that it will be useful, but WITHOUT
    14. 

  14.    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
    15. 

  15.    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
    16. 

  16.    License for more details.
    17. 

  17. 

  18.    You should have received a copy of the GNU General Public License
    19. 

  19.    along with GCC; see the file COPYING3.  If not see
    20. 

  20.    <http://www.gnu.org/licenses/>.  */
    21. 

  21. 

  22. #undef TARGET_OS_CPP_BUILTINS
    23. 

  23. #define TARGET_OS_CPP_BUILTINS() 		\
    24. 

  24.   do 						\
    25. 

  25.     {						\
    26. 

  26.       builtin_define ("__uClinux__");		\
    27. 

  27.       builtin_define_std ("linux");             \
    28. 

  28.       builtin_define_std ("unix");              \
    29. 

  29.       builtin_assert ("system=linux");          \
    30. 

  30.       builtin_assert ("system=unix");           \
    31. 

  31.       builtin_assert ("system=posix");          \
    32. 

  32.     }						\
    33. 

  33.   while (false)
    34. 

  34. 

  35. #undef  STARTFILE_SPEC
    36. 

  36. #define STARTFILE_SPEC \
    37. 

  37.   "%{!shared:crt1%O%s} crti%O%s %{shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
    38. 

  38. 

  39. #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
    40. 

  40. 

  41. #undef LINK_SPEC
    42. 

  42. #define LINK_SPEC ENDIAN_LINK_SPEC \
    43. 

  43.   "%{shared} %{fpie|fPIE:-pie} \
    44. 

  44.   %{!shared: %{!static: \
    45. 

  45.    %{rdynamic:-export-dynamic} \
    46. 

  46.    %{!dynamic-linker:-dynamic-linker " UCLIBC_DYNAMIC_LINKER "}} \
    47. 

  47.    %{static}}"
    48. 

  48. 

  49. #undef DRIVER_SELF_SPECS
    50. 

  50. #define DRIVER_SELF_SPECS "%{!mno-dsbt:-mdsbt}"
    51. 

  51. 

  52. /* Clear the instruction cache from `beg' to `end'.  This makes an
    53. 

  53.    inline system call to SYS_cacheflush.  */
    54. 

  54. #undef CLEAR_INSN_CACHE
    55. 

  55. #define CLEAR_INSN_CACHE(BEG, END)					\
    56. 

  56. {									\
    57. 

  57.   register unsigned long _beg __asm ("A4") = (unsigned long) (BEG);	\
    58. 

  58.   register unsigned long _end __asm ("B4") = (unsigned long) (END);	\
    59. 

  59.   register unsigned long _scno __asm ("B0") = 244;			\
    60. 

  60.   __asm __volatile ("swe		; sys_cache_sync"		\
    61. 

  61. 		    : "=a" (_beg)					\
    62. 

  62. 		    : "0" (_beg), "b" (_end), "b" (_scno));	\
    63. 

  63. }
    64. 

  64.