xref: /freebsd-10-stable/contrib/binutils/gas/config/tc-sparc.h

/* tc-sparc.h - Macros and type defines for the sparc.
   Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
   1999, 2000 Free Software Foundation, Inc.

   This file is part of GAS, the GNU Assembler.

   GAS 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.

   GAS 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 GAS; see the file COPYING.  If not, write
   to the Free Software Foundation, 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#ifndef TC_SPARC
#define TC_SPARC 1

#ifdef ANSI_PROTOTYPES
struct frag;
#endif

/* This is used to set the default value for `target_big_endian'.  */
#define TARGET_BYTES_BIG_ENDIAN 1

#define LOCAL_LABELS_FB 1

#define TARGET_ARCH bfd_arch_sparc

extern const char *sparc_target_format PARAMS ((void));
#define TARGET_FORMAT sparc_target_format ()

#define RELOC_EXPANSION_POSSIBLE
#define MAX_RELOC_EXPANSION 2

#if 0
#ifdef TE_SPARCAOUT
/* Bi-endian support may eventually be unconditional, but until things are
   working well it's only provided for targets that need it.  */
#define SPARC_BIENDIAN
#endif
#endif
/* Make it unconditional and check if -EL is valid after option parsing */
#define SPARC_BIENDIAN

#define WORKING_DOT_WORD

#define md_convert_frag(b,s,f) \
  as_fatal (_("sparc convert_frag\n"))
#define md_estimate_size_before_relax(f,s) \
  (as_fatal(_("estimate_size_before_relax called")), 1)

#define LISTING_HEADER "SPARC GAS "

extern int sparc_pic_code;

/* We require .word, et. al., to be aligned correctly.  */
#define md_cons_align(nbytes) sparc_cons_align (nbytes)
extern void sparc_cons_align PARAMS ((int));

#define HANDLE_ALIGN(fragp) sparc_handle_align (fragp)
extern void sparc_handle_align PARAMS ((struct frag *));

#define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4 + 4)

#if defined (OBJ_ELF) || defined (OBJ_AOUT)

/* This expression evaluates to false if the relocation is for a local
   object for which we still want to do the relocation at runtime.
   True if we are willing to perform this relocation while building
   the .o file.

   If the reloc is against an externally visible symbol, then the
   a.out assembler should not do the relocation if generating PIC, and
   the ELF assembler should never do the relocation.  */

#ifdef OBJ_ELF
#define obj_relocate_extern 0
#else
#define obj_relocate_extern (! sparc_pic_code)
#endif

#define TC_RELOC_RTSYM_LOC_FIXUP(FIX)  \
  (obj_relocate_extern \
   || (FIX)->fx_addsy == NULL \
   || (! S_IS_EXTERNAL ((FIX)->fx_addsy) \
       && ! S_IS_WEAK ((FIX)->fx_addsy) \
       && S_IS_DEFINED ((FIX)->fx_addsy) \
       && ! S_IS_COMMON ((FIX)->fx_addsy)))
#endif

/* I know that "call 0" fails in sparc-coff if this doesn't return 1.  I
   don't know about other relocation types, or other formats, yet.  */
#ifdef OBJ_COFF
#define TC_FORCE_RELOCATION(FIXP)	\
	((FIXP)->fx_r_type == BFD_RELOC_32_PCREL_S2 \
	 && ((FIXP)->fx_addsy == 0 \
	     || S_GET_SEGMENT ((FIXP)->fx_addsy) == absolute_section))
#define RELOC_REQUIRES_SYMBOL
#endif

#ifdef OBJ_ELF
#define TC_FORCE_RELOCATION(fixp) elf32_sparc_force_relocation(fixp)
extern int elf32_sparc_force_relocation PARAMS ((struct fix *));
#endif

#define MD_APPLY_FIX3
#define TC_HANDLES_FX_DONE

#ifdef OBJ_ELF
/* Keep relocations against global symbols.  Don't turn them into
   relocations against sections.  This is required for the dynamic
   linker to operate properly.  When generating PIC, we need to keep
   any non PC relative reloc.  The PIC part of this test must be
   parallel to the code in tc_gen_reloc which converts relocations to
   GOT relocations.  */
#define tc_fix_adjustable(FIX)						\
  (! S_IS_EXTERNAL ((FIX)->fx_addsy)					\
   && ! S_IS_WEAK ((FIX)->fx_addsy)					\
   && (FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT			\
   && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY			\
   && (! sparc_pic_code							\
       || ((FIX)->fx_r_type != BFD_RELOC_HI22				\
	   && (FIX)->fx_r_type != BFD_RELOC_LO10			\
	   && (FIX)->fx_r_type != BFD_RELOC_SPARC13			\
	   && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2		\
	       || (S_IS_DEFINED ((FIX)->fx_addsy)			\
		   && ! S_IS_COMMON ((FIX)->fx_addsy)			\
		   && ! S_IS_EXTERNAL ((FIX)->fx_addsy)			\
		   && ! S_IS_WEAK ((FIX)->fx_addsy)))			\
	   && ((FIX)->fx_pcrel						\
	       || ((FIX)->fx_subsy != NULL				\
		   && (S_GET_SEGMENT ((FIX)->fx_subsy)			\
		       == S_GET_SEGMENT ((FIX)->fx_addsy)))		\
	       || S_IS_LOCAL ((FIX)->fx_addsy)))))

/* Finish up the entire symtab.  */
#define tc_adjust_symtab() sparc_adjust_symtab ()
extern void sparc_adjust_symtab PARAMS ((void));
#endif

#ifdef OBJ_AOUT
/* When generating PIC code, we must not adjust any reloc which will
   turn into a reloc against the global offset table, nor any reloc
   which we will need if a symbol is overridden.  */
#define tc_fix_adjustable(FIX)						\
  (! sparc_pic_code							\
   || ((FIX)->fx_pcrel							\
       && ((FIX)->fx_addsy == NULL					\
	   || (! S_IS_EXTERNAL ((FIX)->fx_addsy)			\
	       && ! S_IS_WEAK ((FIX)->fx_addsy))))			\
   || (FIX)->fx_r_type == BFD_RELOC_16					\
   || (FIX)->fx_r_type == BFD_RELOC_32)
#endif

#define elf_tc_final_processing sparc_elf_final_processing
extern void sparc_elf_final_processing PARAMS ((void));

#define md_operand(x)

extern void sparc_md_end PARAMS ((void));
#define md_end() sparc_md_end ()

#endif

#define TC_CONS_FIX_NEW cons_fix_new_sparc
extern void cons_fix_new_sparc
  PARAMS ((struct frag *, int, unsigned int, struct expressionS *));

#define TC_FIX_TYPE	valueT

#define TC_INIT_FIX_DATA(X)			\
  do						\
     {						\
       (X)->tc_fix_data = 0;			\
     }						\
  while (0)

#define TC_FIX_DATA_PRINT(FILE, FIXP)					\
  do									\
    {									\
      fprintf ((FILE), "addend2=%ld\n",   				\
	      (unsigned long) (FIXP)->tc_fix_data);			\
    }									\
  while (0)

#define DWARF2_LINE_MIN_INSN_LENGTH 4

/* end of tc-sparc.h */