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, 2003, 2005 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 /* Make it unconditional and check if -EL is valid after option parsing */
  43 #define SPARC_BIENDIAN
  44
  45 #define WORKING_DOT_WORD
  46
  47 #define md_convert_frag(b,s,f) \
  48   as_fatal (_("sparc convert_frag\n"))
  49 #define md_estimate_size_before_relax(f,s) \
  50   (as_fatal (_("estimate_size_before_relax called")), 1)
  51
  52 #define LISTING_HEADER "SPARC GAS "
  53
  54 extern int sparc_pic_code;
  55
  56 /* We require .word, et. al., to be aligned correctly.  */
  57 #define md_cons_align(nbytes) sparc_cons_align (nbytes)
  58 extern void sparc_cons_align PARAMS ((int));
  59
  60 #define HANDLE_ALIGN(fragp) sparc_handle_align (fragp)
  61 extern void sparc_handle_align PARAMS ((struct frag *));
  62
  63 #define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4 + 4)
  64
  65 /* I know that "call 0" fails in sparc-coff if this doesn't return 1.  I
  66    don't know about other relocation types, or other formats, yet.  */
  67 #ifdef OBJ_COFF
  68 #define TC_FORCE_RELOCATION_ABS(FIX)            \
  69   ((FIX)->fx_r_type == BFD_RELOC_32_PCREL_S2    \
  70    || TC_FORCE_RELOCATION (FIX))
  71
  72 #define RELOC_REQUIRES_SYMBOL
  73 #endif
  74
  75 #ifdef OBJ_AOUT
  76 /* This expression evaluates to true if the relocation is for a local
  77    object for which we still want to do the relocation at runtime.
  78    False if we are willing to perform this relocation while building
  79    the .o file.  */
  80
  81 #define TC_FORCE_RELOCATION_LOCAL(FIX)          \
  82   (!(FIX)->fx_pcrel                             \
  83    || (FIX)->fx_plt                             \
  84    || (sparc_pic_code                           \
  85        && S_IS_EXTERNAL ((FIX)->fx_addsy))      \
  86    || TC_FORCE_RELOCATION (FIX))
  87 #endif
  88
  89 #ifdef OBJ_ELF
  90 /* Don't turn certain relocs into relocations against sections.  This
  91    is required for the dynamic linker to operate properly.  When
  92    generating PIC, we need to keep any non PC relative reloc.  The PIC
  93    part of this test must be parallel to the code in tc_gen_reloc which
  94    converts relocations to GOT relocations.  */
  95 #define tc_fix_adjustable(FIX)                                          \
  96   ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT                         \
  97    && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY                        \
  98    && ((FIX)->fx_r_type < BFD_RELOC_SPARC_TLS_GD_HI22                   \
  99        || (FIX)->fx_r_type > BFD_RELOC_SPARC_TLS_TPOFF64)               \
 100    && (! sparc_pic_code                                                 \
 101        || ((FIX)->fx_r_type != BFD_RELOC_HI22                           \
 102            && (FIX)->fx_r_type != BFD_RELOC_LO10                        \
 103            && (FIX)->fx_r_type != BFD_RELOC_SPARC13                     \
 104            && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2                \
 105                || !generic_force_reloc (FIX))                           \
 106            && ((FIX)->fx_pcrel                                          \
 107                || ((FIX)->fx_subsy != NULL                              \
 108                    && (S_GET_SEGMENT ((FIX)->fx_subsy)                  \
 109                        == S_GET_SEGMENT ((FIX)->fx_addsy)))             \
 110                || S_IS_LOCAL ((FIX)->fx_addsy)))))
 111
 112 /* Values passed to md_apply_fix3 don't include the symbol value.  */
 113 #define MD_APPLY_SYM_VALUE(FIX) 0
 114
 115 /* Finish up the entire symtab.  */
 116 #define tc_adjust_symtab() sparc_adjust_symtab ()
 117 extern void sparc_adjust_symtab PARAMS ((void));
 118 #endif
 119
 120 #ifdef OBJ_AOUT
 121 /* When generating PIC code, we must not adjust any reloc which will
 122    turn into a reloc against the global offset table, nor any reloc
 123    which we will need if a symbol is overridden.  */
 124 #define tc_fix_adjustable(FIX)                                          \
 125   (! sparc_pic_code                                                     \
 126    || ((FIX)->fx_pcrel                                                  \
 127        && ((FIX)->fx_addsy == NULL                                      \
 128            || (! S_IS_EXTERNAL ((FIX)->fx_addsy)                        \
 129                && ! S_IS_WEAK ((FIX)->fx_addsy))))                      \
 130    || (FIX)->fx_r_type == BFD_RELOC_16                                  \
 131    || (FIX)->fx_r_type == BFD_RELOC_32)
 132 #endif
 133
 134 #define elf_tc_final_processing sparc_elf_final_processing
 135 extern void sparc_elf_final_processing PARAMS ((void));
 136
 137 #define md_operand(x)
 138
 139 extern void sparc_md_end PARAMS ((void));
 140 #define md_end() sparc_md_end ()
 141
 142 #endif
 143
 144 #ifdef OBJ_ELF
 145 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) sparc_cons (EXP, NBYTES)
 146 extern void sparc_cons PARAMS ((expressionS *, int));
 147 #endif
 148
 149 #define TC_CONS_FIX_NEW cons_fix_new_sparc
 150 extern void cons_fix_new_sparc
 151   PARAMS ((struct frag *, int, unsigned int, struct expressionS *));
 152
 153 #define TC_FIX_TYPE     valueT
 154
 155 #define TC_INIT_FIX_DATA(X)                     \
 156   do                                            \
 157      {                                          \
 158        (X)->tc_fix_data = 0;                    \
 159      }                                          \
 160   while (0)
 161
 162 #define TC_FIX_DATA_PRINT(FILE, FIX)                                    \
 163   do                                                                    \
 164     {                                                                   \
 165       fprintf ((FILE), "addend2=%ld\n",                                 \
 166               (unsigned long) (FIX)->tc_fix_data);                      \
 167     }                                                                   \
 168   while (0)
 169
 170 #define TARGET_USE_CFIPOP 1
 171
 172 #define tc_cfi_frame_initial_instructions sparc_cfi_frame_initial_instructions
 173 extern void sparc_cfi_frame_initial_instructions PARAMS ((void));
 174
 175 #define tc_regname_to_dw2regnum sparc_regname_to_dw2regnum
 176 extern int sparc_regname_to_dw2regnum PARAMS ((const char *regname));
 177
 178 #define tc_cfi_emit_pcrel_expr sparc_cfi_emit_pcrel_expr
 179 extern void sparc_cfi_emit_pcrel_expr PARAMS ((expressionS *, unsigned int));
 180
 181 extern int sparc_cie_data_alignment;
 182
 183 #define DWARF2_LINE_MIN_INSN_LENGTH     4
 184 #define DWARF2_DEFAULT_RETURN_COLUMN    15
 185 #define DWARF2_CIE_DATA_ALIGNMENT       sparc_cie_data_alignment
 186
 187 /* end of tc-sparc.h */