1  /* Definitions for TI C6X running ucLinux using ELF
       2     Copyright (C) 2010-2023 Free Software Foundation, Inc.
       3     Contributed by Andrew Jenner <andrew@codesourcery.com>
       4     Contributed by Bernd Schmidt <bernds@codesourcery.com>
       5  
       6     This file is part of GCC.
       7  
       8     GCC is free software; you can redistribute it and/or modify it
       9     under the terms of the GNU General Public License as published
      10     by the Free Software Foundation; either version 3, or (at your
      11     option) any later version.
      12  
      13     GCC is distributed in the hope that it will be useful, but WITHOUT
      14     ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
      15     or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
      16     License for more details.
      17  
      18     You should have received a copy of the GNU General Public License
      19     along with GCC; see the file COPYING3.  If not see
      20     <http://www.gnu.org/licenses/>.  */
      21  
      22  #undef TARGET_OS_CPP_BUILTINS
      23  #define TARGET_OS_CPP_BUILTINS() 		\
      24    do 						\
      25      {						\
      26        builtin_define ("__uClinux__");		\
      27        builtin_define_std ("linux");             \
      28        builtin_define_std ("unix");              \
      29        builtin_assert ("system=linux");          \
      30        builtin_assert ("system=unix");           \
      31        builtin_assert ("system=posix");          \
      32      }						\
      33    while (false)
      34  
      35  #undef  STARTFILE_SPEC
      36  #define STARTFILE_SPEC \
      37    "%{!shared:crt1%O%s} crti%O%s %{shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
      38  
      39  #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
      40  
      41  #undef LINK_SPEC
      42  #define LINK_SPEC ENDIAN_LINK_SPEC \
      43    "%{shared} %{" FPIE_SPEC ":-pie} \
      44    %{!shared: %{!static: \
      45     %{rdynamic:-export-dynamic} \
      46     %{!dynamic-linker:-dynamic-linker " UCLIBC_DYNAMIC_LINKER "}} \
      47     %{static}}"
      48  
      49  #undef DRIVER_SELF_SPECS
      50  #define DRIVER_SELF_SPECS "%{!mno-dsbt:-mdsbt}"
      51  
      52  /* Clear the instruction cache from `beg' to `end'.  This makes an
      53     inline system call to SYS_cacheflush.  */
      54  #undef CLEAR_INSN_CACHE
      55  #define CLEAR_INSN_CACHE(BEG, END)					\
      56  {									\
      57    register unsigned long _beg __asm ("A4") = (unsigned long) (BEG);	\
      58    register unsigned long _end __asm ("B4") = (unsigned long) (END);	\
      59    register unsigned long _scno __asm ("B0") = 244;			\
      60    __asm __volatile ("swe		; sys_cache_sync"		\
      61  		    : "=a" (_beg)					\
      62  		    : "0" (_beg), "b" (_end), "b" (_scno));	\
      63  }