gas/config/tc-sparc.h

   1 /* tc-sparc.h - Macros and type defines for the sparc.
   2    Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
   3    1999, 2000, 2001, 2002 Free Software Foundation, Inc.
   4
   5    This file is part of GAS, the GNU Assembler.
   6
   7    GAS is free software; you can redistribute it and/or modify
   8    it under the terms of the GNU General Public License as
   9    published by the Free Software Foundation; either version 2,
  10    or (at your option) any later version.
  11
  12    GAS is distributed in the hope that it will be useful, but
  13    WITHOUT ANY WARRANTY; without even the implied warranty of
  14    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  15    the GNU General Public License for more details.
  16
  17    You should have received a copy of the GNU General Public
  18    License along with GAS; see the file COPYING.  If not, write
  19    to the Free Software Foundation, 59 Temple Place - Suite 330,
  20    Boston, MA 02111-1307, USA.  */
  21
  22 #ifndef TC_SPARC
  23 #define TC_SPARC 1
  24
  25 #ifdef ANSI_PROTOTYPES
  26 struct frag;
  27 #endif
  28
  29 /* This is used to set the default value for `target_big_endian'.  */
  30 #define TARGET_BYTES_BIG_ENDIAN 1
  31
  32 #define LOCAL_LABELS_FB 1
  33
  34 #define TARGET_ARCH bfd_arch_sparc
  35
  36 extern const char *sparc_target_format PARAMS ((void));
  37 #define TARGET_FORMAT sparc_target_format ()
  38
  39 #define RELOC_EXPANSION_POSSIBLE
  40 #define MAX_RELOC_EXPANSION 2
  41
  42 #if 0
  43 #ifdef TE_SPARCAOUT
  44 /* Bi-endian support may eventually be unconditional, but until things are
  45    working well it's only provided for targets that need it.  */
  46 #define SPARC_BIENDIAN
  47 #endif
  48 #endif
  49 /* Make it unconditional and check if -EL is valid after option parsing */
  50 #define SPARC_BIENDIAN
  51
  52 #define WORKING_DOT_WORD
  53
  54 #define md_convert_frag(b,s,f) \
  55   as_fatal (_("sparc convert_frag\n"))
  56 #define md_estimate_size_before_relax(f,s) \
  57   (as_fatal (_("estimate_size_before_relax called")), 1)
  58
  59 #define LISTING_HEADER "SPARC GAS "
  60
  61 extern int sparc_pic_code;
  62
  63 /* We require .word, et. al., to be aligned correctly.  */
  64 #define md_cons_align(nbytes) sparc_cons_align (nbytes)
  65 extern void sparc_cons_align PARAMS ((int));
  66
  67 #define HANDLE_ALIGN(fragp) sparc_handle_align (fragp)
  68 extern void sparc_handle_align PARAMS ((struct frag *));
  69
  70 #define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4 + 4)
  71
  72 #ifdef OBJ_ELF
  73 #define TC_FORCE_RELOCATION(FIX) elf32_sparc_force_relocation(FIX)
  74 extern int elf32_sparc_force_relocation PARAMS ((struct fix *));
  75 #endif
  76
  77 /* I know that "call 0" fails in sparc-coff if this doesn't return 1.  I
  78    don't know about other relocation types, or other formats, yet.  */
  79 #ifdef OBJ_COFF
  80 #define TC_FORCE_RELOCATION_ABS(FIX)            \
  81   ((FIX)->fx_r_type == BFD_RELOC_32_PCREL_S2    \
  82    || TC_FORCE_RELOCATION (FIX))
  83
  84 #define RELOC_REQUIRES_SYMBOL
  85 #endif
  86
  87 #ifdef OBJ_AOUT
  88 /* This expression evaluates to true if the relocation is for a local
  89    object for which we still want to do the relocation at runtime.
  90    False if we are willing to perform this relocation while building
  91    the .o file.  */
  92
  93 #define TC_FORCE_RELOCATION_LOCAL(FIX)          \
  94   (!(FIX)->fx_pcrel                             \
  95    || (FIX)->fx_plt                             \
  96    || (sparc_pic_code                           \
  97        && S_IS_EXTERNAL ((FIX)->fx_addsy))      \
  98    || TC_FORCE_RELOCATION (FIX))
  99 #endif
 100
 101 #ifdef OBJ_ELF
 102 /* Don't turn certain relocs into relocations against sections.  This
 103    is required for the dynamic linker to operate properly.  When
 104    generating PIC, we need to keep any non PC relative reloc.  The PIC
 105    part of this test must be parallel to the code in tc_gen_reloc which
 106    converts relocations to GOT relocations.  */
 107 #define tc_fix_adjustable(FIX)                                          \
 108   ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT                         \
 109    && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY                        \
 110    && (! sparc_pic_code                                                 \
 111        || ((FIX)->fx_r_type != BFD_RELOC_HI22                           \
 112            && (FIX)->fx_r_type != BFD_RELOC_LO10                        \
 113            && (FIX)->fx_r_type != BFD_RELOC_SPARC13                     \
 114            && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2                \
 115                || !S_FORCE_RELOC ((FIX)->fx_addsy))                     \
 116            && ((FIX)->fx_pcrel                                          \
 117                || ((FIX)->fx_subsy != NULL                              \
 118                    && (S_GET_SEGMENT ((FIX)->fx_subsy)                  \
 119                        == S_GET_SEGMENT ((FIX)->fx_addsy)))             \
 120                || S_IS_LOCAL ((FIX)->fx_addsy)))))
 121
 122 /* Values passed to md_apply_fix3 don't include the symbol value.  */
 123 #define MD_APPLY_SYM_VALUE(FIX) 0
 124
 125 /* Finish up the entire symtab.  */
 126 #define tc_adjust_symtab() sparc_adjust_symtab ()
 127 extern void sparc_adjust_symtab PARAMS ((void));
 128 #endif
 129
 130 #ifdef OBJ_AOUT
 131 /* When generating PIC code, we must not adjust any reloc which will
 132    turn into a reloc against the global offset table, nor any reloc
 133    which we will need if a symbol is overridden.  */
 134 #define tc_fix_adjustable(FIX)                                          \
 135   (! sparc_pic_code                                                     \
 136    || ((FIX)->fx_pcrel                                                  \
 137        && ((FIX)->fx_addsy == NULL                                      \
 138            || (! S_IS_EXTERNAL ((FIX)->fx_addsy)                        \
 139                && ! S_IS_WEAK ((FIX)->fx_addsy))))                      \
 140    || (FIX)->fx_r_type == BFD_RELOC_16                                  \
 141    || (FIX)->fx_r_type == BFD_RELOC_32)
 142 #endif
 143
 144 #define elf_tc_final_processing sparc_elf_final_processing
 145 extern void sparc_elf_final_processing PARAMS ((void));
 146
 147 #define md_operand(x)
 148
 149 extern void sparc_md_end PARAMS ((void));
 150 #define md_end() sparc_md_end ()
 151
 152 #endif
 153
 154 #ifdef OBJ_ELF
 155 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) sparc_cons (EXP, NBYTES)
 156 extern void sparc_cons PARAMS ((expressionS *, int));
 157 #endif
 158
 159 #define TC_CONS_FIX_NEW cons_fix_new_sparc
 160 extern void cons_fix_new_sparc
 161   PARAMS ((struct frag *, int, unsigned int, struct expressionS *));
 162
 163 #define TC_FIX_TYPE     valueT
 164
 165 #define TC_INIT_FIX_DATA(X)                     \
 166   do                                            \
 167      {                                          \
 168        (X)->tc_fix_data = 0;                    \
 169      }                                          \
 170   while (0)
 171
 172 #define TC_FIX_DATA_PRINT(FILE, FIX)                                    \
 173   do                                                                    \
 174     {                                                                   \
 175       fprintf ((FILE), "addend2=%ld\n",                                 \
 176               (unsigned long) (FIX)->tc_fix_data);                      \
 177     }                                                                   \
 178   while (0)
 179
 180 #define DWARF2_LINE_MIN_INSN_LENGTH 4
 181
 182 /* end of tc-sparc.h */