xcoffout.h   [plain text]

/* XCOFF definitions.  These are needed in dbxout.c, final.c,
   and xcoffout.h.
   Copyright (C) 1998, 2000, 2002 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

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
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.  */

#define ASM_STABS_OP "\t.stabx\t"

/* Tags and typedefs are C_DECL in XCOFF, not C_LSYM.  */


/* Use the XCOFF predefined type numbers.  */

/* ??? According to metin, typedef stabx must go in text control section,
   but he did not make this changes everywhere where such typedef stabx
   can be emitted, so it is really needed or not?  */

{						\
  text_section ();				\
  xcoff_output_standard_types (SYMS);		\

/* Any type with a negative type index has already been output.  */


/* Must use N_STSYM for static const variables (those in the text section)
   instead of N_FUN.  */


/* For static variables, output code to define the start of a static block.  */

{									\
  if ((CODE) == N_STSYM)						\
    fprintf ((ASMFILE), "\t.bs\t%s[RW]\n", xcoff_private_data_section_name);\
  else if ((CODE) == N_LCSYM)						\
    fprintf ((ASMFILE), "\t.bs\t%s\n", xcoff_bss_section_name);	\

/* For static variables, output code to define the end of a static block.  */

{									\
  if ((CODE) == N_STSYM || (CODE) == N_LCSYM)				\
    fputs ("\t.es\n", (ASMFILE));					\

/* We must use N_RPYSM instead of N_RSYM for register parameters.  */


/* We must use 'R' instead of 'P' for register parameters.  */


/* Define our own finish symbol function, since xcoff stabs have their
   own different format.  */

#define DBX_FINISH_SYMBOL(SYM)					\
{								\
  if (current_sym_addr && current_sym_code == N_FUN)		\
    fprintf (asmfile, "\",.");					\
  else								\
    fprintf (asmfile, "\",");					\
  /* If we are writing a function name, we must ensure that	\
     there is no storage-class suffix on the name.  */		\
  if (current_sym_addr && current_sym_code == N_FUN		\
      && GET_CODE (current_sym_addr) == SYMBOL_REF)		\
    {								\
      const char *_p = XSTR (current_sym_addr, 0);		\
      if (*_p == '*')						\
	fprintf (asmfile, "%s", _p+1);				\
      else							\
	for (; *_p != '[' && *_p; _p++)				\
	  fprintf (asmfile, "%c", *_p);				\
    }								\
  else if (current_sym_addr)					\
    output_addr_const (asmfile, current_sym_addr);		\
  else if (current_sym_code == N_GSYM)				\
    assemble_name (asmfile, XSTR (XEXP (DECL_RTL (sym), 0), 0)); \
  else								\
    fprintf (asmfile, "%d", current_sym_value);			\
  fprintf (asmfile, ",%d,0\n", stab_to_sclass (current_sym_code)); \

/* These are IBM XCOFF extensions we need to reference in dbxout.c
   and xcoffout.c.  */

/* AIX XCOFF uses this for typedefs.  This can have any value, since it is
   only used for translation into a C_DECL storage class.  */
#ifndef N_DECL
#define N_DECL 0x8c
/* AIX XCOFF uses this for parameters passed in registers.  This can have
   any value, since it is only used for translation into a C_RPSYM storage
   class.  */
#ifndef N_RPSYM
#define N_RPSYM 0x8e

/* Name of the current include file.  */

extern const char *xcoff_current_include_file;

/* Names of bss and data sections.  These should be unique names for each
   compilation unit.  */

extern char *xcoff_bss_section_name;
extern char *xcoff_private_data_section_name;
extern char *xcoff_read_only_section_name;

/* Last source file name mentioned in a NOTE insn.  */

extern const char *xcoff_lastfile;

/* Don't write out path name for main source file.  */

/* Write out main source file name using ".file" rather than ".stabs".
   We don't actually do this here, because the assembler gets confused if there
   is more than one .file directive.  ASM_FILE_START in config/rs6000/rs6000.h
   is already emitting a .file directory, so we don't output one here also.
   Initialize xcoff_lastfile.  */
  xcoff_lastfile = (FILENAME)

/* If we are still in an include file, its end must be marked.  */
{							\
  if (xcoff_current_include_file)			\
    {							\
      fputs ("\t.ei\t", (FILE));			\
      output_quoted_string ((FILE), xcoff_current_include_file);	\
      putc ('\n', (FILE));				\
      xcoff_current_include_file = NULL;		\
    }							\

/* .stabx has the type in a different place.  */
#if 0  /* Do not emit any marker for XCOFF until assembler allows XFT_CV.  */
  fprintf ((FILE), "%s\"%s\",0,%d,0\n", ASM_STABS_OP, STABS_GCC_MARKER, \
	   stab_to_sclass (N_GSYM))

/* Do not break .stabs pseudos into continuations.  */

/* Don't try to use the `x' type-cross-reference character in DBX data.
   Also has the consequence of putting each struct, union or enum
   into a separate .stabs, containing only cross-refs to the others.  */
#define DBX_NO_XREFS

/* We must put stabs in the text section.  If we don't the assembler
   won't handle them correctly; it will sometimes put stabs where gdb
   can't find them.  */


/* Prototype functions in xcoffout.c.  */

extern int stab_to_sclass			PARAMS ((int));
#ifdef BUFSIZ
extern void xcoffout_begin_prologue		PARAMS ((unsigned int,
							 const char *));
extern void xcoffout_begin_block		PARAMS ((unsigned, unsigned));
extern void xcoffout_end_epilogue		PARAMS ((unsigned int,
							 const char *));
extern void xcoffout_end_function		PARAMS ((unsigned int));
extern void xcoffout_end_block			PARAMS ((unsigned, unsigned));
#endif /* BUFSIZ */

#ifdef TREE_CODE
extern void xcoff_output_standard_types		PARAMS ((tree));
#ifdef BUFSIZ
extern void xcoffout_declare_function		PARAMS ((FILE *, tree, const char *));
#endif /* BUFSIZ */
#endif /* TREE_CODE */

#ifdef RTX_CODE
#ifdef BUFSIZ
extern void xcoffout_source_line		PARAMS ((unsigned int,
							 const char *));
#endif /* BUFSIZ */
#endif /* RTX_CODE */