gcc/config/nios2/elf.h

   1 /* Definitions of ELF target support for Altera Nios II.
   2    Copyright (C) 2012-2014 Free Software Foundation, Inc.
   3    Contributed by Jonah Graham (jgraham@altera.com),
   4    Will Reece (wreece@altera.com), and Jeff DaSilva (jdasilva@altera.com).
   5    Contributed by Mentor Graphics, Inc.
   6
   7    This file is part of GCC.
   8
   9    GCC is free software; you can redistribute it and/or modify it
  10    under the terms of the GNU General Public License as published
  11    by the Free Software Foundation; either version 3, or (at your
  12    option) any later version.
  13
  14    GCC is distributed in the hope that it will be useful, but WITHOUT
  15    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
  16    or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public
  17    License for more details.
  18
  19    You should have received a copy of the GNU General Public License
  20    along with GCC; see the file COPYING3.  If not see
  21    <http://www.gnu.org/licenses/>.  */
  22
  23
  24 /* Specs to support the additional command-line options for Nios II ELF
  25    toolchains.  */
  26
  27 /* -msmallc chooses an alternate C library.
  28    -msys-lib= specifies an additional low-level system/hosting library and
  29    is typically used to suck in a library provided by a HAL BSP.  */
  30 #undef LIB_SPEC
  31 #define LIB_SPEC \
  32 "--start-group %{msmallc: -lsmallc} %{!msmallc: -lc} -lgcc \
  33  %{msys-lib=*: -l%*} \
  34  --end-group \
  35 "
  36
  37 /* Linking with -mhal suppresses inclusion of the GCC-provided crt* begin/end
  38    code.  Normally in this case you also link with -msys-crt0= to specify
  39    the startup code provided by the HAL BSP instead.  */
  40 #undef STARTFILE_SPEC
  41 #define STARTFILE_SPEC                                          \
  42   "%{mhal:"                                                     \
  43   "%{msys-crt0=*:%*} %{!msys-crt0=*:crt0%O%s} "                 \
  44   "%{msys-crt0=:%eYou need a C startup file for -msys-crt0=};"  \
  45   ":crti%O%s crtbegin%O%s}"
  46
  47 #undef  ENDFILE_SPEC
  48 #define ENDFILE_SPEC "%{!mhal:crtend%O%s crtn%O%s}"
  49
  50 /* The ELF target doesn't support the Nios II Linux ABI.  */
  51 #define TARGET_LINUX_ABI 0
  52