linux.h

Mac OS X 10.4.9 for x86 Source Code gcc 实现源代码

/* Definitions of target machine for GNU compiler,
   for Alpha Linux-based GNU systems.
   Copyright (C) 1996, 1997, 1998, 2002, 2003, 2004
   Free Software Foundation, Inc.
   Contributed by Richard Henderson.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GCC is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING.  If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.  */

#undef TARGET_DEFAULT
#define TARGET_DEFAULT (MASK_FP | MASK_FPREGS | MASK_GAS)

#define TARGET_OS_CPP_BUILTINS()				\
    do {							\
	builtin_define ("__gnu_linux__");			\
	builtin_define ("_LONGLONG");				\
	builtin_define_std ("linux");				\
	builtin_define_std ("unix");				\
	builtin_assert ("system=linux");			\
	builtin_assert ("system=unix");				\
	builtin_assert ("system=posix");			\
	/* The GNU C++ standard library requires this.  */	\
	if (c_dialect_cxx ())					\
	  builtin_define ("_GNU_SOURCE");			\
	if (flag_pic)						\
	  {							\
		builtin_define ("__PIC__");			\
		builtin_define ("__pic__");			\
	  }							\
    } while (0)

#undef LIB_SPEC
#define LIB_SPEC \
  "%{pthread:-lpthread} \
   %{shared:-lc} \
   %{!shared: %{profile:-lc_p}%{!profile:-lc}}"

/* Show that we need a GP when profiling.  */
#undef TARGET_PROFILING_NEEDS_GP
#define TARGET_PROFILING_NEEDS_GP 1

/* Don't care about faults in the prologue.  */
#undef TARGET_CAN_FAULT_IN_PROLOGUE
#define TARGET_CAN_FAULT_IN_PROLOGUE 1

/* OS fixes up EV5 data fault on prefetch.  */
#undef TARGET_FIXUP_EV5_PREFETCH
#define TARGET_FIXUP_EV5_PREFETCH 1

#undef WCHAR_TYPE
#define WCHAR_TYPE "int"

/* Define this so that all GNU/Linux targets handle the same pragmas.  */
#define HANDLE_PRAGMA_PACK_PUSH_POP

/* Determine whether the the entire c99 runtime is present in the
   runtime library.  */
#define TARGET_C99_FUNCTIONS 1

#define TARGET_HAS_F_SETLKW

#define LINK_GCC_C_SEQUENCE_SPEC \
  "%{static:--start-group} %G %L %{static:--end-group}%{!static:%G}"

/* Use --as-needed -lgcc_s for eh support.  */
#ifdef HAVE_LD_AS_NEEDED
#define USE_LD_AS_NEEDED 1
#endif

#define MD_UNWIND_SUPPORT "config/alpha/linux-unwind.h"