pa-linux.h

linux下编程用 编译软件

/* Definitions for PA_RISC with ELF format
   Copyright 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.

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, 51 Franklin Street, Fifth Floor,
Boston, MA 02110-1301, USA.  */


#undef TARGET_OS_CPP_BUILTINS
#define TARGET_OS_CPP_BUILTINS()		\
  do						\
    {						\
	LINUX_TARGET_OS_CPP_BUILTINS();		\
	builtin_assert ("machine=bigendian");	\
	if (flag_pic)				\
	  {					\
		builtin_define ("__PIC__");	\
		builtin_define ("__pic__");	\
	  }					\
    }						\
  while (0)

#undef CPP_SPEC
#define CPP_SPEC "%{posix:-D_POSIX_SOURCE}"

#undef	LIB_SPEC
#define LIB_SPEC \
  "%{pthread:-lpthread} \
   %{shared:-lgcc -lc} \
   %{!shared:%{mieee-fp:-lieee} %{shared-libgcc:-lgcc} %{profile:-lc_p}%{!profile:-lc}}"

#undef ASM_SPEC
#define ASM_SPEC \
  "%{v:-V} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*}"

/* Define this for shared library support because it isn't in the main
   linux.h file.  */

#undef LINK_SPEC
#define LINK_SPEC "\
  %{shared:-shared} \
  %{!shared: \
    %{!static: \
      %{rdynamic:-export-dynamic} \
      %{!dynamic-linker:-dynamic-linker /lib/ld.so.1}} \
      %{static:-static}}"

/* glibc's profiling functions don't need gcc to allocate counters.  */
#define NO_DEFERRED_PROFILE_COUNTERS 1

/* Define the strings used for the special svr4 .type and .size directives.
   These strings generally do not vary from one system running svr4 to
   another, but if a given system (e.g. m88k running svr) needs to use
   different pseudo-op names for these, they may be overridden in the
   file which includes this one.  */

#undef STRING_ASM_OP
#define STRING_ASM_OP   ".stringz"

#define TEXT_SECTION_ASM_OP "\t.text"
#define DATA_SECTION_ASM_OP "\t.data"
#define BSS_SECTION_ASM_OP "\t.section\t.bss"

#define TARGET_ASM_FILE_START pa_linux_file_start

/* We want local labels to start with period if made with asm_fprintf.  */
#undef LOCAL_LABEL_PREFIX
#define LOCAL_LABEL_PREFIX "."

/* Define these to generate the Linux/ELF/SysV style of internal
   labels all the time - i.e. to be compatible with
   ASM_GENERATE_INTERNAL_LABEL in <elfos.h>.  Compare these with the
   ones in pa.h and note the lack of dollar signs in these.  FIXME:
   shouldn't we fix pa.h to use ASM_GENERATE_INTERNAL_LABEL instead? */

#undef ASM_OUTPUT_ADDR_VEC_ELT
#define ASM_OUTPUT_ADDR_VEC_ELT(FILE, VALUE) \
  if (TARGET_BIG_SWITCH)					\
    fprintf (FILE, "\t.word .L%d\n", VALUE);			\
  else								\
    fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)

#undef ASM_OUTPUT_ADDR_DIFF_ELT
#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
  if (TARGET_BIG_SWITCH)					\
    fprintf (FILE, "\t.word .L%d-.L%d\n", VALUE, REL);		\
  else								\
    fprintf (FILE, "\tb .L%d\n\tnop\n", VALUE)

/* Use the default.  */
#undef ASM_OUTPUT_LABEL

/* NOTE: (*targetm.asm_out.internal_label)() is defined for us by elfos.h, and
   does what we want (i.e. uses colons).  It must be compatible with
   ASM_GENERATE_INTERNAL_LABEL(), so do not define it here.  */

/* Use the default.  */
#undef TARGET_ASM_GLOBALIZE_LABEL
/* Globalizing directive for a label.  */
#define GLOBAL_ASM_OP ".globl "

/* FIXME: Hacked from the <elfos.h> one so that we avoid multiple
   labels in a function declaration (since pa.c seems determined to do
   it differently)  */

#undef ASM_DECLARE_FUNCTION_NAME
#define ASM_DECLARE_FUNCTION_NAME(FILE, NAME, DECL)		\
  do								\
    {								\
      ASM_OUTPUT_TYPE_DIRECTIVE (FILE, NAME, "function");	\
      ASM_DECLARE_RESULT (FILE, DECL_RESULT (DECL));		\
    }								\
  while (0)

/* As well as globalizing the label, we need to encode the label
   to ensure a plabel is generated in an indirect call.  */

#undef ASM_OUTPUT_EXTERNAL_LIBCALL
#define ASM_OUTPUT_EXTERNAL_LIBCALL(FILE, FUN)  		\
  do								\
    {								\
      if (!FUNCTION_NAME_P (XSTR (FUN, 0)))			\
	hppa_encode_label (FUN);				\
      (*targetm.asm_out.globalize_label) (FILE, XSTR (FUN, 0));	\
    }								\
  while (0)

/* Linux always uses gas.  */
#undef TARGET_GAS
#define TARGET_GAS 1