osfrose.h

gcc编译工具没有什么特别

	    fprintf (FILE, "\tmovl 4(%%ebp),%%ecx\n");			\
	    fprintf (FILE, "\tpushl %%ecx\n");				\
	    fprintf (FILE, "\tleal %sP%d@GOTOFF(%%ebx),%%edx\n",	\
		     lprefix, labelno);					\
	    fprintf (FILE, "\tmovl _mcount_ptr@GOT(%%ebx),%%eax\n");	\
	    fprintf (FILE, "\tcall *(%%eax)\n");			\
	    fprintf (FILE, "\tpopl %%eax\n");				\
	  }								\
									\
	else if (frame_pointer_needed)					\
	  {								\
	    fprintf (FILE, "\tmovl 4(%%ebp),%%ecx\n");			\
	    fprintf (FILE, "\tpushl %%ecx\n");				\
	    fprintf (FILE, "\tmovl $%sP%d,%%edx\n", lprefix, labelno);	\
	    fprintf (FILE, "\tcall *_mcount_ptr\n");			\
	    fprintf (FILE, "\tpopl %%eax\n");				\
	  }								\
									\
	else								\
	  abort ();							\
      }									\
  }									\
while (0)

/* A C function or functions which are needed in the library to
   support block profiling.  When support goes into libc, undo
   the #if 0.  */

#if 0
#undef	BLOCK_PROFILING_CODE
#define	BLOCK_PROFILING_CODE
#endif

/* Prefix for internally generated assembler labels.  If we aren't using
   underscores, we are using prefix `.'s to identify labels that should
   be ignored, as in `i386/gas.h' [e-mail]  */
#undef	LPREFIX
#define	LPREFIX ((TARGET_UNDERSCORES) ? "L" : ".L")

/* This is how to store into the string BUF
   the symbol_ref name of an internal numbered label where
   PREFIX is the class of label and NUM is the number within the class.
   This is suitable for output with `assemble_name'.  */

#undef	ASM_GENERATE_INTERNAL_LABEL
#define ASM_GENERATE_INTERNAL_LABEL(BUF,PREFIX,NUMBER)			\
    sprintf ((BUF), "*%s%s%d", (TARGET_UNDERSCORES) ? "" : ".",		\
	     (PREFIX), (NUMBER))

/* This is how to output an internal numbered label where
   PREFIX is the class of label and NUM is the number within the class.  */

#undef	ASM_OUTPUT_INTERNAL_LABEL
#define ASM_OUTPUT_INTERNAL_LABEL(FILE,PREFIX,NUM)			\
  fprintf (FILE, "%s%s%d:\n", (TARGET_UNDERSCORES) ? "" : ".",		\
	   PREFIX, NUM)

/* The prefix to add to user-visible assembler symbols. */

/* target_flags is not accessible by the preprocessor */
#undef USER_LABEL_PREFIX
#define USER_LABEL_PREFIX "_"

/* This is how to output a reference to a user-level label named NAME.  */

#undef	ASM_OUTPUT_LABELREF
#define ASM_OUTPUT_LABELREF(FILE,NAME)					\
  fprintf (FILE, "%s%s", (TARGET_UNDERSCORES) ? "_" : "", NAME)

/* This is how to output an element of a case-vector that is relative.
   This is only used for PIC code.  See comments by the `casesi' insn in
   i386.md for an explanation of the expression this outputs. */

#undef ASM_OUTPUT_ADDR_DIFF_ELT
#define ASM_OUTPUT_ADDR_DIFF_ELT(FILE, BODY, VALUE, REL) \
  fprintf (FILE, "\t.long _GLOBAL_OFFSET_TABLE_+[.-%s%d]\n", LPREFIX, VALUE)

/* Output a definition */
#define ASM_OUTPUT_DEF(FILE,LABEL1,LABEL2)				\
do									\
{									\
    fprintf ((FILE), "\t%s\t", SET_ASM_OP);				\
    assemble_name (FILE, LABEL1);					\
    fprintf (FILE, ",");						\
    assemble_name (FILE, LABEL2);					\
    fprintf (FILE, "\n");						\
    }									\
while (0)

/* A C expression to output text to align the location counter in the
   way that is desirable at a point in the code that is reached only
   by jumping.

   This macro need not be defined if you don't want any special
   alignment to be done at such a time.  Most machine descriptions do
   not currently define the macro.  */

#undef	LABEL_ALIGN_AFTER_BARRIER
#define LABEL_ALIGN_AFTER_BARRIER(LABEL) \
  ((!TARGET_LARGE_ALIGN && i386_align_jumps > 2) ? 2 : i386_align_jumps)

/* A C expression to output text to align the location counter in the
   way that is desirable at the beginning of a loop.

   This macro need not be defined if you don't want any special
   alignment to be done at such a time.  Most machine descriptions do
   not currently define the macro.  */

#undef	LOOP_ALIGN
#define LOOP_ALIGN(LABEL) (i386_align_loops)

/* A C statement to output to the stdio stream STREAM an assembler
   command to advance the location counter to a multiple of 2 to the
   POWER bytes.  POWER will be a C expression of type `int'.  */

#undef	ASM_OUTPUT_ALIGN
#define ASM_OUTPUT_ALIGN(STREAM, POWER)					\
  fprintf (STREAM, "\t.align\t%d\n",					\
	   (!TARGET_LARGE_ALIGN && (POWER) > 2) ? 2 : (POWER))

/* A C expression that is 1 if the RTX X is a constant which is a
   valid address.  On most machines, this can be defined as
   `CONSTANT_P (X)', but a few machines are more restrictive in
   which constant addresses are supported.

   `CONSTANT_P' accepts integer-values expressions whose values are
   not explicitly known, such as `symbol_ref', `label_ref', and
   `high' expressions and `const' arithmetic expressions, in
   addition to `const_int' and `const_double' expressions.  */

#define CONSTANT_ADDRESS_P_ORIG(X)					\
  (GET_CODE (X) == LABEL_REF || GET_CODE (X) == SYMBOL_REF		\
   || GET_CODE (X) == CONST_INT || GET_CODE (X) == CONST		\
   || GET_CODE (X) == HIGH)

#undef	CONSTANT_ADDRESS_P
#define CONSTANT_ADDRESS_P(X)                                           \
  ((CONSTANT_ADDRESS_P_ORIG (X)) && (!HALF_PIC_P () || !HALF_PIC_ADDRESS_P (X)))

/* Nonzero if the constant value X is a legitimate general operand.
   It is given that X satisfies CONSTANT_P or is a CONST_DOUBLE.  */

#undef	LEGITIMATE_CONSTANT_P
#define LEGITIMATE_CONSTANT_P(X)					\
  (!HALF_PIC_P ()							\
   || GET_CODE (X) == CONST_DOUBLE					\
   || GET_CODE (X) == CONST_INT						\
   || !HALF_PIC_ADDRESS_P (X))

/* Sometimes certain combinations of command options do not make sense
   on a particular target machine.  You can define a macro
   `OVERRIDE_OPTIONS' to take account of this.  This macro, if
   defined, is executed once just after all the command options have
   been parsed.  */

#undef  SUBTARGET_OVERRIDE_OPTIONS
#define SUBTARGET_OVERRIDE_OPTIONS					\
{									\
  /*									\
  if (TARGET_ELF && TARGET_HALF_PIC)					\
    {									\
      target_flags &= ~MASK_HALF_PIC;					\
      flag_pic = 1;							\
    }									\
  */									\
									\
  if (TARGET_ROSE && flag_pic)						\
    {									\
      target_flags |= MASK_HALF_PIC;					\
      flag_pic = 0;							\
    }									\
									\
  if (TARGET_HALF_PIC)							\
    half_pic_init ();							\
}

/* Define this macro if references to a symbol must be treated
   differently depending on something about the variable or
   function named by the symbol (such as what section it is in).

   The macro definition, if any, is executed immediately after the
   rtl for DECL has been created and stored in `DECL_RTL (DECL)'.
   The value of the rtl will be a `mem' whose address is a
   `symbol_ref'.

   The usual thing for this macro to do is to a flag in the
   `symbol_ref' (such as `SYMBOL_REF_FLAG') or to store a modified
   name string in the `symbol_ref' (if one bit is not enough
   information).

   The best way to modify the name string is by adding text to the
   beginning, with suitable punctuation to prevent any ambiguity.
   Allocate the new name in `saveable_obstack'.  You will have to
   modify `ASM_OUTPUT_LABELREF' to remove and decode the added text
   and output the name accordingly.

   You can also check the information stored in the `symbol_ref' in
   the definition of `GO_IF_LEGITIMATE_ADDRESS' or
   `PRINT_OPERAND_ADDRESS'. */

#undef	ENCODE_SECTION_INFO
#define ENCODE_SECTION_INFO(DECL)					\
do									\
  {									\
   if (HALF_PIC_P ())							\
      HALF_PIC_ENCODE (DECL);						\
									\
   else if (flag_pic)							\
     {									\
       rtx rtl = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd'		\
		  ? TREE_CST_RTL (DECL) : DECL_RTL (DECL));		\
       SYMBOL_REF_FLAG (XEXP (rtl, 0))					\
	 = (TREE_CODE_CLASS (TREE_CODE (DECL)) != 'd'			\
	    || ! TREE_PUBLIC (DECL));					\
      }									\
  }									\
while (0)


/* On most machines, read-only variables, constants, and jump tables
   are placed in the text section.  If this is not the case on your
   machine, this macro should be defined to be the name of a function
   (either `data_section' or a function defined in `EXTRA_SECTIONS')
   that switches to the section to be used for read-only items.

   If these items should be placed in the text section, this macro
   should not be defined.  */

#if 0
#undef	READONLY_DATA_SECTION
#define READONLY_DATA_SECTION()						\
do									\
  {									\
    if (TARGET_ELF)							\
      {									\
	if (in_section != in_rodata)					\
	  {								\
	    fprintf (asm_out_file, "\t.section \"rodata\"\n");		\
	    in_section = in_rodata;					\
	  }								\
      }									\
    else								\
      text_section ();							\
  }									\
while (0)
#endif

/* A list of names for sections other than the standard two, which are
   `in_text' and `in_data'.  You need not define this macro on a
   system with no other sections (that GCC needs to use).  */

#undef	EXTRA_SECTIONS
#define	EXTRA_SECTIONS in_rodata, in_data1

/* Given a decl node or constant node, choose the section to output it in
   and select that section.  */

#undef	SELECT_RTX_SECTION
#define SELECT_RTX_SECTION(MODE, RTX)					\
do									\
  {									\
    if (MODE == Pmode && HALF_PIC_P () && HALF_PIC_ADDRESS_P (RTX))	\
      data_section ();							\
    else								\
      readonly_data_section ();						\
  }									\
while (0)

#undef	SELECT_SECTION
#define SELECT_SECTION(DECL, RELOC)					\
{									\
  if (RELOC && HALF_PIC_P ())						\
    data_section ();							\
									\
  else if (TREE_CODE (DECL) == STRING_CST)				\
    {									\
      if (flag_writable_strings)					\
	data_section ();						\
      else								\
	readonly_data_section ();					\
    }									\
									\
  else if (TREE_CODE (DECL) != VAR_DECL)				\
    readonly_data_section ();						\
									\
  else if (!TREE_READONLY (DECL) || TREE_SIDE_EFFECTS (DECL)		\
	   || !DECL_INITIAL (DECL)					\
	   || (DECL_INITIAL (DECL) != error_mark_node			\
	       && !TREE_CONSTANT (DECL_INITIAL (DECL))))		\
    data_section ();							\
									\
  else									\
    readonly_data_section ();						\
}


/* 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.  */

#define TYPE_ASM_OP	".type"
#define SIZE_ASM_OP	".size"
#define SET_ASM_OP	".set"