gcc/config/frv/linux.h

   1 /* Target macros for the FRV Linux port of GCC.
   2    Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004
   3    Free Software Foundation, Inc.
   4    Contributed by Red Hat Inc.
   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 2, 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 COPYING.  If not, write to the Free
  20    Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  21    02111-1307, USA.  */
  22
  23 #ifndef __FRV_LINUX_H__
  24 #define __FRV_LINUX_H__
  25
  26 #undef SUBTARGET_DRIVER_SELF_SPECS
  27 #define SUBTARGET_DRIVER_SELF_SPECS \
  28   "%{!mno-fdpic:-mfdpic}",
  29
  30 #undef STARTFILE_SPEC
  31 #define STARTFILE_SPEC \
  32   "%{!shared: %{pg|p|profile:gcrt1.o%s;pie:Scrt1.o%s;:crt1.o%s}} \
  33    crti.o%s %{static:crtbeginT.o%s;shared|pie:crtbeginS.o%s;:crtbegin.o%s}"
  34
  35 #undef ENDFILE_SPEC
  36 #define ENDFILE_SPEC \
  37   "%{shared|pie:crtendS.o%s;:crtend.o%s} crtn.o%s"
  38
  39 #undef LINK_SPEC
  40 #define LINK_SPEC "\
  41   %{mfdpic: -m elf32frvfd -z text} %{shared} %{pie} \
  42   %{!shared: %{!static: \
  43    %{rdynamic:-export-dynamic} \
  44    %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
  45    %{static}}"
  46
  47 /* Support for compile-time default CPU.  */
  48 #define OPTION_DEFAULT_SPECS \
  49   {"cpu", "%{!mcpu=*:-mcpu=%(VALUE)}" }
  50
  51 /* Define OS-specific predefined preprocessor macros.  */
  52 #define TARGET_OS_CPP_BUILTINS()        \
  53   do {                                  \
  54     builtin_define ("__gnu_linux__");   \
  55     builtin_define_std ("linux");       \
  56     builtin_define_std ("unix");        \
  57     builtin_assert ("system=linux");    \
  58   } while (0)
  59
  60 #define HAS_INIT_SECTION 1
  61 #define INIT_SECTION_ASM_OP     "\t.section .init,\"ax\""
  62 #define FINI_SECTION_ASM_OP     "\t.section .fini,\"ax\""
  63
  64 #define CRT_CALL_STATIC_FUNCTION(SECTION_OP, FUNC)      \
  65 asm (SECTION_OP); \
  66 asm ("ldi.p @(fp,4), gr15 ! call " #FUNC); \
  67 asm (TEXT_SECTION_ASM_OP);
  68
  69 #undef INVOKE__main
  70
  71 #undef Twrite
  72 #define Twrite __write
  73
  74 /* uClibc doesn't support many of the C90-reserved C99-defined math
  75    functions.  Make sure we don't implicitly generate them unless C99
  76    support is explicitly requested.  This will affect both frv-linux
  77    and frv-uclinux.  Even though the glibc, the primary library for
  78    frv-linux, would enable better code to be generated with
  79    TARGET_C99_FUNCTIONS defined to 1, uClinux can be used as the
  80    library for frv-linux as well, and we'd better have that work
  81    correctly.  Maybe we move this to a uclibc.h header in the future,
  82    and use that for frv-uclinux and frv-linux-uclibc?  Define it here
  83    for now, such that we can still get exactly the same code out of
  84    both frv-linux-gcc and frv-uclinux-gcc, when feeding them the same
  85    preprocessed sources.  */
  86 #undef TARGET_C99_FUNCTIONS
  87 #define TARGET_C99_FUNCTIONS 0
  88
  89 #endif /* __FRV_LINUX_H__ */