gcc/config/tilegx/linux.h

   1 /* Definitions for TILE-Gx running Linux-based GNU systems with ELF.
   2    Copyright (C) 2011, 2012
   3    Free Software Foundation, Inc.
   4    Contributed by Walter Lee (walt@tilera.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 CPP_SPEC
  23 #define CPP_SPEC "%{pthread:-D_REENTRANT}"
  24
  25 #undef ASM_SPEC
  26 #define ASM_SPEC "%{m32:--32} %{m64:--64}"
  27
  28 #undef  LINK_SPEC
  29 #define LINK_SPEC "%{m64:-m elf64tilegx} %{m32:-m elf32tilegx} \
  30   %{shared:-shared} \
  31   %{!shared: \
  32     %{!static: \
  33       %{rdynamic:-export-dynamic} \
  34       -dynamic-linker \
  35         %{ m32: /lib32/ld.so.1} \
  36         %{!m32: /lib/ld.so.1}} \
  37     %{static:-static}}"
  38
  39 #define MULTILIB_DEFAULTS { "m64" }
  40
  41 #define NO_PROFILE_COUNTERS     1
  42
  43 #undef MCOUNT_NAME
  44 #define MCOUNT_NAME "__mcount"
  45
  46 #undef NEED_INDICATE_EXEC_STACK
  47 #define NEED_INDICATE_EXEC_STACK 1
  48
  49 #ifdef TARGET_LIBC_PROVIDES_SSP
  50 /* TILE-Gx glibc provides __stack_chk_guard two pointer-size words before
  51    tp. */
  52 #define TARGET_THREAD_SSP_OFFSET (-2 * GET_MODE_SIZE (ptr_mode))
  53 #endif
  54
  55 /* For __clear_cache in libgcc2.c.  */
  56 #ifdef IN_LIBGCC2
  57
  58 #include <arch/icache.h>
  59
  60 /* Use the minimum page size of 4K.  Alternatively we can call
  61    getpagesize() but it introduces a libc dependence.  */
  62 #undef CLEAR_INSN_CACHE
  63 #define CLEAR_INSN_CACHE(beg, end) invalidate_icache (beg, end - beg, 4096)
  64
  65 #else
  66
  67 /* define CLEAR_INSN_CACHE so that gcc knows to expand __builtin__clear_cache
  68    to the libraray call.  */
  69 #undef CLEAR_INSN_CACHE
  70 #define CLEAR_INSN_CACHE 1
  71
  72 #endif