1/* Definitions for TI C6X running ucLinux using ELF
2   Copyright (C) 2010-2020 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}
64