gcc/config/tilegx/linux.h

   1 /* Definitions for TILE-Gx running Linux-based GNU systems with ELF.
   2    Copyright (C) 2011-2013 Free Software Foundation, Inc.
   3    Contributed by Walter Lee (walt@tilera.com)
   4
   5    This file is part of GCC.
   6
   7    GCC is free software; you can redistribute it and/or modify it
   8    under the terms of the GNU General Public License as published
   9    by the Free Software Foundation; either version 3, or (at your
  10    option) any later version.
  11
  12    GCC is distributed in the hope that it will be useful, but WITHOUT
  13    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  14    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  15    License for more details.
  16
  17    You should have received a copy of the GNU General Public License
  18    along with GCC; see the file COPYING3.  If not see
  19    <http://www.gnu.org/licenses/>.  */
  20
  21 #undef CPP_SPEC
  22 #define CPP_SPEC "%{pthread:-D_REENTRANT}"
  23
  24 #undef ASM_SPEC
  25 #define ASM_SPEC "%{m32:--32} %{m64:--64}"
  26
  27 #undef  LINK_SPEC
  28 #define LINK_SPEC "%{m64:-m elf64tilegx} %{m32:-m elf32tilegx} \
  29   %{shared:-shared} \
  30   %{!shared: \
  31     %{!static: \
  32       %{rdynamic:-export-dynamic} \
  33       -dynamic-linker \
  34         %{ m32: /lib32/ld.so.1} \
  35         %{!m32: /lib/ld.so.1}} \
  36     %{static:-static}}"
  37
  38 #define MULTILIB_DEFAULTS { "m64" }
  39
  40 #define NO_PROFILE_COUNTERS     1
  41
  42 #undef MCOUNT_NAME
  43 #define MCOUNT_NAME "__mcount"
  44
  45 #undef NEED_INDICATE_EXEC_STACK
  46 #define NEED_INDICATE_EXEC_STACK 1
  47
  48 #ifdef TARGET_LIBC_PROVIDES_SSP
  49 /* TILE-Gx glibc provides __stack_chk_guard two pointer-size words before
  50    tp. */
  51 #define TARGET_THREAD_SSP_OFFSET (-2 * GET_MODE_SIZE (ptr_mode))
  52 #endif
  53
  54 /* For __clear_cache in libgcc2.c.  */
  55 #ifdef IN_LIBGCC2
  56
  57 #include <arch/icache.h>
  58
  59 /* Use the minimum page size of 4K.  Alternatively we can call
  60    getpagesize() but it introduces a libc dependence.  */
  61 #undef CLEAR_INSN_CACHE
  62 #define CLEAR_INSN_CACHE(beg, end) invalidate_icache (beg, end - beg, 4096)
  63
  64 #else
  65
  66 /* define CLEAR_INSN_CACHE so that gcc knows to expand __builtin__clear_cache
  67    to the libraray call.  */
  68 #undef CLEAR_INSN_CACHE
  69 #define CLEAR_INSN_CACHE 1
  70
  71 #endif