sysv4.h

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#undef ASM_FILE_START
#define ASM_FILE_START(FILE)						\
do {									\
  output_file_directive ((FILE), main_input_filename);			\
  rs6000_file_start (FILE, TARGET_CPU_DEFAULT);				\
} while (0)


/* This is how to output an assembler line defining an `int' constant.
   For -mrelocatable, we mark all addresses that need to be fixed up
   in the .fixup section.  */
#undef	ASM_OUTPUT_INT
#define ASM_OUTPUT_INT(FILE,VALUE)					\
do {									\
  static int recurse = 0;						\
  if ((TARGET_RELOCATABLE || flag_pic)					\
      && in_section != in_toc						\
      && in_section != in_text						\
      && in_section != in_ctors						\
      && in_section != in_dtors						\
      && !recurse							\
      && GET_CODE (VALUE) != CONST_INT					\
      && GET_CODE (VALUE) != CONST_DOUBLE				\
      && CONSTANT_P (VALUE))						\
    {									\
      static int labelno = 0;						\
      char buf[256], *p;						\
									\
      recurse = 1;							\
      ASM_GENERATE_INTERNAL_LABEL (buf, "LCP", labelno++);		\
      STRIP_NAME_ENCODING (p, buf);					\
      fprintf (FILE, "%s:\n", p);					\
      fprintf (FILE, "\t.long (");					\
      output_addr_const (FILE, (VALUE));				\
      fprintf (FILE, ")@fixup\n");					\
      fprintf (FILE, "\t.section\t\".fixup\",\"aw\"\n");			\
      ASM_OUTPUT_ALIGN (FILE, 2);					\
      fprintf (FILE, "\t.long\t%s\n", p);				\
      fprintf (FILE, "\t.previous\n");					\
      recurse = 0;							\
    }									\
  /* Remove initial .'s to turn a -mcall-aixdesc or -mcall-nt function	\
     address into the address of the descriptor, not the function	\
     itself.  */							\
  else if (GET_CODE (VALUE) == SYMBOL_REF				\
	   && XSTR (VALUE, 0)[0] == '.'					\
	   && (DEFAULT_ABI == ABI_AIX || DEFAULT_ABI == ABI_NT))	\
    {									\
      char *name = XSTR (VALUE, 0);					\
      while (*name == '.')						\
	name++;								\
									\
      fprintf (FILE, "\t.long %s\n", name);				\
    }									\
  else									\
    {									\
      fprintf (FILE, "\t.long ");					\
      output_addr_const (FILE, (VALUE));				\
      fprintf (FILE, "\n");						\
    }									\
} while (0)

/* This is the end of what might become sysv4.h.  */

/* Allow stabs and dwarf, for now, make stabs the default debugging type,
   not dwarf since G++ doesn't support dwarf. */
#undef	PREFERRED_DEBUGGING_TYPE
#define PREFERRED_DEBUGGING_TYPE DBX_DEBUG

#define	DBX_DEBUGGING_INFO
#define	DWARF_DEBUGGING_INFO

/* If we are referencing a function that is static or is known to be
   in this file, make the SYMBOL_REF special.  We can use this to indicate
   that we can branch to this function without emitting a no-op after the
   call.  For real AIX and NT calling sequences, we also replace the
   function name with the real name (1 or 2 leading .'s), rather than
   the function descriptor name.  This saves a lot of overriding code
   to readd the prefixes.  */

#undef	ENCODE_SECTION_INFO
#define ENCODE_SECTION_INFO(DECL) rs6000_encode_section_info (DECL)

extern void rs6000_encode_section_info ();

/* This macro gets just the user-specified name
   out of the string in a SYMBOL_REF.  Discard
   a leading * or @. */
#undef  STRIP_NAME_ENCODING
#define STRIP_NAME_ENCODING(VAR,SYMBOL_NAME)				\
do {									\
  char *_name = SYMBOL_NAME;						\
  while (*_name == '*' || *_name == '@')				\
    _name++;								\
  (VAR) = _name;							\
} while (0)

/* This is how to output a reference to a user-level label named NAME.
   `assemble_name' uses this.  */

#undef ASM_OUTPUT_LABELREF
#define ASM_OUTPUT_LABELREF(FILE,NAME)	\
do {									\
  char *_name = NAME;							\
  while (*_name == '*' || *_name == '@')				\
    _name++;								\
  fputs (_name, FILE);							\
} while (0)

/*
 * Switch into a generic section.
 *
 * We make the section read-only and executable for a function decl,
 * read-only for a const data decl, and writable for a non-const data decl.
 *
 * If the section has already been defined, we must not
 * emit the attributes here. The SVR4 assembler does not
 * recognize section redefinitions.
 * If DECL is NULL, no attributes are emitted.
 *
 * Note, Solaris as doesn't like @nobits, and gas can handle .sbss without
 * needing @nobits.
 */

#undef	ASM_OUTPUT_SECTION_NAME
#define ASM_OUTPUT_SECTION_NAME(FILE, DECL, NAME, RELOC)		\
do {									\
  static struct section_info						\
    {									\
      struct section_info *next;				        \
      char *name;						        \
      enum sect_enum {SECT_RW, SECT_RO, SECT_EXEC} type;		\
    } *sections;							\
  struct section_info *s;						\
  char *mode;								\
  enum sect_enum type;							\
									\
  for (s = sections; s; s = s->next)					\
    if (!strcmp (NAME, s->name))					\
      break;								\
									\
  if (DECL && TREE_CODE (DECL) == FUNCTION_DECL)			\
    type = SECT_EXEC, mode = "ax";					\
  else if (DECL && DECL_READONLY_SECTION (DECL, RELOC) && !TARGET_RELOCATABLE && !flag_pic) \
    type = SECT_RO, mode = "a";						\
  else									\
    type = SECT_RW, mode = "aw";					\
									\
  if (s == 0)								\
    {									\
      s = (struct section_info *) xmalloc (sizeof (struct section_info));  \
      s->name = xmalloc ((strlen (NAME) + 1) * sizeof (*NAME));		\
      strcpy (s->name, NAME);						\
      s->type = type;							\
      s->next = sections;						\
      sections = s;							\
      fprintf (FILE, "\t.section\t\"%s\",\"%s\"\n", NAME, mode);	\
    }									\
  else									\
    {									\
      if (DECL && s->type != type)					\
	error_with_decl (DECL, "%s causes a section type conflict");	\
									\
      fprintf (FILE, "\t.section\t\"%s\"\n", NAME);			\
    }									\
} while (0)

#undef ASM_OUTPUT_CONSTRUCTOR
#define ASM_OUTPUT_CONSTRUCTOR(FILE,NAME)				\
  do {									\
    if (DEFAULT_ABI != ABI_SOLARIS)					\
      {									\
	ctors_section ();						\
	fprintf (FILE, "\t%s\t ", INT_ASM_OP);				\
	assemble_name (FILE, NAME);					\
      }									\
    else								\
      {									\
	init_section ();						\
	fputs ("\tbl ", FILE);						\
	assemble_name (FILE, NAME);					\
      }									\
    fputs ("\n", FILE);							\
  } while (0)

/* A C statement (sans semicolon) to output an element in the table of
   global destructors.  */
#undef ASM_OUTPUT_DESTRUCTOR
#define ASM_OUTPUT_DESTRUCTOR(FILE,NAME)       				\
  do {									\
    if (DEFAULT_ABI != ABI_SOLARIS)					\
      {									\
	dtors_section ();						\
	fprintf (FILE, "\t%s\t ", INT_ASM_OP);				\
	assemble_name (FILE, NAME);					\
      }									\
    else								\
      {									\
	fini_section ();						\
	fputs ("\tbl ", FILE);						\
	assemble_name (FILE, NAME);					\
      }									\
    fputs ("\n", FILE);							\
  } while (0)

/* But, to make this work, we have to output the stabs for the function
   name *first*...  */

#define	DBX_FUNCTION_FIRST

/* This is the end of what might become sysv4dbx.h.  */

#undef TARGET_VERSION
#define TARGET_VERSION fprintf (stderr, " (PowerPC System V.4)");

#undef CPP_PREDEFINES
#define CPP_PREDEFINES \
  "-DPPC -Dunix -D__svr4__ -Asystem(unix) -Asystem(svr4) -Acpu(powerpc) -Amachine(powerpc)"

/* Pass various options to the assembler */
#undef ASM_SPEC
#define ASM_SPEC "%(asm_cpu) \
%{.s: %{mregnames} %{mno-regnames}} %{.S: %{mregnames} %{mno-regnames}} \
%{v:-V} %{Qy:} %{!Qn:-Qy} %{n} %{T} %{Ym,*} %{Yd,*} %{Wa,*:%*} \
%{mrelocatable} %{mrelocatable-lib} %{fpic:-K PIC} %{fPIC:-K PIC} \
%{memb} %{!memb: %{msdata: -memb} %{msdata=eabi: -memb}} \
%{mlittle} %{mlittle-endian} %{mbig} %{mbig-endian} \
%{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
    %{mcall-solaris: -mlittle -msolaris} \
    %{mcall-linux: -mbig} }}}}"

#ifndef CC1_ENDIAN_BIG_SPEC
#define CC1_ENDIAN_BIG_SPEC ""
#endif

#ifndef CC1_ENDIAN_LITTLE_SPEC
#define CC1_ENDIAN_LITTLE_SPEC "\
%{!mstrict-align: %{!mno-strict-align: \
	-mstrict-align \
}}"
#endif

#ifndef CC1_ENDIAN_DEFAULT_SPEC
#define CC1_ENDIAN_DEFAULT_SPEC "%(cc1_endian_big_spec)"
#endif

#undef CC1_SPEC
/* Pass -G xxx to the compiler and set correct endian mode */
#define CC1_SPEC "%{G*} \
%{mlittle: %(cc1_endian_little)} %{!mlittle: %{mlittle-endian: %(cc1_endian_little)}} \
%{mbig: %(cc1_endian_big)} %{!mbig: %{mbig-endian: %(cc1_endian_big)}} \
    %{mcall-nt: -mlittle %{cc1_endian_little} } \
    %{mcall-aixdesc: -mbig %{cc1_endian_big} } \
    %{mcall-solaris: -mlittle %{cc1_endian_little} } \
    %{mcall-linux: -mbig %{cc1_endian_big} } \
    %{!mcall-nt: %{!mcall-aixdesc: %{!mcall-solaris: %{!mcall-linux: \
	    %(cc1_endian_default) \
    }}}} \
%{mcall-solaris: -mregnames } \
%{mno-sdata: -msdata=none } \
%{meabi: %{!mcall-*: -mcall-sysv }} \
%{!meabi: %{!mno-eabi: \
    %{mrelocatable: -meabi } \
    %{mcall-solaris: -mno-eabi } \
    %{mcall-linux: -mno-eabi }}} \
%{msdata: -msdata=default} \
%{mno-sdata: -msdata=none} \
%{profile: -p}"

/* Don't put -Y P,<path> for cross compilers */
#undef LINK_PATH_SPEC
#ifndef CROSS_COMPILE
#define LINK_PATH_SPEC "\
%{!R*:%{L*:-R %*}} \
%{!nostdlib: %{!YP,*: \
    %{compat-bsd: \
	%{p:-Y P,/usr/ucblib:/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
	%{!p:-Y P,/usr/ucblib:/usr/ccs/lib:/usr/lib}} \
	%{!R*: %{!L*: -R /usr/ucblib}} \
    %{!compat-bsd: \
	%{p:-Y P,/usr/ccs/lib/libp:/usr/lib/libp:/usr/ccs/lib:/usr/lib} \
	%{!p:-Y P,/usr/ccs/lib:/usr/lib}}}}"

#else
#define LINK_PATH_SPEC ""
#endif

/* Default starting address if specified */
#ifndef LINK_START_SPEC
#define LINK_START_SPEC "\
%{mads: %(link_start_ads) } \
%{myellowknife: %(link_start_yellowknife) } \
%{mmvme: %(link_start_mvme) } \
%{msim: %(link_start_sim) } \
%{mcall-linux: %(link_start_linux) } \
%{mcall-solaris: %(link_start_solaris) } \
%{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-linux: %{!mcall-solaris: %(link_start_default) }}}}}}"
#endif

#ifndef	LINK_START_DEFAULT_SPEC
#define LINK_START_DEFAULT_SPEC ""
#endif

#undef LINK_SPEC
#define LINK_SPEC "\
%{h*} %{v:-V} %{G*} \
%{Wl,*:%*} %{YP,*} %{R*} \
%{Qy:} %{!Qn:-Qy} \
%(link_shlib) \
%{!Ttext*: %(link_start) } \
%(link_target) \
%(link_os)"

/* For now, turn off shared libraries by default.  */
#ifndef SHARED_LIB_SUPPORT
#define NO_SHARED_LIB_SUPPORT
#endif

#undef  LINK_SHLIB_SPEC
#ifndef NO_SHARED_LIB_SUPPORT
/* Shared libraries are default.  */
#define LINK_SHLIB_SPEC "\
%{!static: %(link_path) %{!R*:%{L*:-R %*}}} \
%{mshlib: } \
%{static:-dn -Bstatic} \
%{shared:-G -dy -z text} \
%{symbolic:-Bsymbolic -G -dy -z text}"

#else
/* Shared libraries are not default.  */
#define LINK_SHLIB_SPEC "\
%{mshlib: %(link_path) } \
%{!mshlib: %{!shared: %{!symbolic: -dn -Bstatic}}} \
%{static: } \
%{shared:-G -dy -z text %(link_path) } \
%{symbolic:-Bsymbolic -G -dy -z text %(link_path) }"
#endif

/* Override the default target of the linker.  */
#undef	LINK_TARGET_SPEC
#define	LINK_TARGET_SPEC "\
%{mlittle: -oformat elf32-powerpcle } %{mlittle-endian: -oformat elf32-powerpcle } \
%{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: %{mcall-solaris: -oformat elf32-powerpcle}}}}}"

/* Any specific OS flags */
#ifndef LINK_OS_SPEC
#define LINK_OS_SPEC "\
%{mads: %(link_os_ads) } \
%{myellowknife: %(link_os_yellowknife) } \
%{mmvme: %(link_os_mvme) } \
%{msim: %(link_os_sim) } \
%{mcall-linux: %(link_os_linux) } \
%{mcall-solaris: %(link_os_solaris) } \
%{!mads: %{!myellowknife: %{!mmvme: %{!msim: %{!mcall-linux: %{!mcall-solaris: %(link_os_default) }}}}}}"
#endif

#ifndef	LINK_OS_DEFAULT_SPEC
#define LINK_OS_DEFAULT_SPEC ""
#endif

#undef	CPP_SYSV_SPEC
#define CPP_SYSV_SPEC \
"%{mrelocatable*: -D_RELOCATABLE} \
%{fpic: -D__PIC__=1 -D__pic__=1} \
%{!fpic: %{fPIC: -D__PIC__=2 -D__pic__=2}} \
%{mcall-sysv: -D_CALL_SYSV} %{mcall-nt: -D_CALL_NT} \
%{mcall-aix: -D_CALL_AIX} %{mcall-aixdesc: -D_CALL_AIX -D_CALL_AIXDESC} \
%{!mcall-sysv: %{!mcall-aix: %{!mcall-aixdesc: %{!mcall-nt: %(cpp_sysv_default) }}}} \
%{msoft-float: -D_SOFT_FLOAT} %{mcpu=403: -D_SOFT_FLOAT}"

#undef	CPP_SYSV_DEFAULT_SPEC
#define	CPP_SYSV_DEFAULT_SPEC "-D_CALL_SYSV"