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, 51 Franklin Street - Fifth Floor,
  20    Boston, MA 02110-1301, USA.  */
  21
  22 #ifndef TC_SPARC
  23 #define TC_SPARC 1
  24
  25 struct frag;
  26
  27 /* This is used to set the default value for `target_big_endian'.  */
  28 #define TARGET_BYTES_BIG_ENDIAN 1
  29
  30 #define LOCAL_LABELS_FB 1
  31
  32 #define TARGET_ARCH bfd_arch_sparc
  33
  34 extern const char *sparc_target_format PARAMS ((void));
  35 #define TARGET_FORMAT sparc_target_format ()
  36
  37 #define RELOC_EXPANSION_POSSIBLE
  38 #define MAX_RELOC_EXPANSION 2
  39
  40 /* Make it unconditional and check if -EL is valid after option parsing */
  41 #define SPARC_BIENDIAN
  42
  43 #define WORKING_DOT_WORD
  44
  45 #define md_convert_frag(b,s,f) \
  46   as_fatal (_("sparc convert_frag\n"))
  47 #define md_estimate_size_before_relax(f,s) \
  48   (as_fatal (_("estimate_size_before_relax called")), 1)
  49
  50 #define LISTING_HEADER "SPARC GAS "
  51
  52 extern int sparc_pic_code;
  53
  54 /* We require .word, et. al., to be aligned correctly.  */
  55 #define md_cons_align(nbytes) sparc_cons_align (nbytes)
  56 extern void sparc_cons_align PARAMS ((int));
  57
  58 #define HANDLE_ALIGN(fragp) sparc_handle_align (fragp)
  59 extern void sparc_handle_align PARAMS ((struct frag *));
  60
  61 #define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4 + 4)
  62
  63 /* I know that "call 0" fails in sparc-coff if this doesn't return 1.  I
  64    don't know about other relocation types, or other formats, yet.  */
  65 #ifdef OBJ_COFF
  66 #define TC_FORCE_RELOCATION_ABS(FIX)            \
  67   ((FIX)->fx_r_type == BFD_RELOC_32_PCREL_S2    \
  68    || TC_FORCE_RELOCATION (FIX))
  69
  70 #define RELOC_REQUIRES_SYMBOL
  71 #endif
  72
  73 #ifdef OBJ_AOUT
  74 /* This expression evaluates to true if the relocation is for a local
  75    object for which we still want to do the relocation at runtime.
  76    False if we are willing to perform this relocation while building
  77    the .o file.  */
  78
  79 #define TC_FORCE_RELOCATION_LOCAL(FIX)          \
  80   (!(FIX)->fx_pcrel                             \
  81    || (FIX)->fx_plt                             \
  82    || (sparc_pic_code                           \
  83        && S_IS_EXTERNAL ((FIX)->fx_addsy))      \
  84    || TC_FORCE_RELOCATION (FIX))
  85 #endif
  86
  87 #ifdef OBJ_ELF
  88 /* Don't turn certain relocs into relocations against sections.  This
  89    is required for the dynamic linker to operate properly.  When
  90    generating PIC, we need to keep any non PC relative reloc.  The PIC
  91    part of this test must be parallel to the code in tc_gen_reloc which
  92    converts relocations to GOT relocations.  */
  93 #define tc_fix_adjustable(FIX)                                          \
  94   ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT                         \
  95    && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY                        \
  96    && ((FIX)->fx_r_type < BFD_RELOC_SPARC_TLS_GD_HI22                   \
  97        || (FIX)->fx_r_type > BFD_RELOC_SPARC_TLS_TPOFF64)               \
  98    && (! sparc_pic_code                                                 \
  99        || ((FIX)->fx_r_type != BFD_RELOC_HI22                           \
 100            && (FIX)->fx_r_type != BFD_RELOC_LO10                        \
 101            && (FIX)->fx_r_type != BFD_RELOC_SPARC13                     \
 102            && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2                \
 103                || !generic_force_reloc (FIX))                           \
 104            && ((FIX)->fx_pcrel                                          \
 105                || ((FIX)->fx_subsy != NULL                              \
 106                    && (S_GET_SEGMENT ((FIX)->fx_subsy)                  \
 107                        == S_GET_SEGMENT ((FIX)->fx_addsy)))             \
 108                || S_IS_LOCAL ((FIX)->fx_addsy)))))
 109
 110 /* Values passed to md_apply_fix don't include the symbol value.  */
 111 #define MD_APPLY_SYM_VALUE(FIX) 0
 112
 113 /* Finish up the entire symtab.  */
 114 #define tc_adjust_symtab() sparc_adjust_symtab ()
 115 extern void sparc_adjust_symtab PARAMS ((void));
 116 #endif
 117
 118 #ifdef OBJ_AOUT
 119 /* When generating PIC code, we must not adjust any reloc which will
 120    turn into a reloc against the global offset table, nor any reloc
 121    which we will need if a symbol is overridden.  */
 122 #define tc_fix_adjustable(FIX)                                          \
 123   (! sparc_pic_code                                                     \
 124    || ((FIX)->fx_pcrel                                                  \
 125        && ((FIX)->fx_addsy == NULL                                      \
 126            || (! S_IS_EXTERNAL ((FIX)->fx_addsy)                        \
 127                && ! S_IS_WEAK ((FIX)->fx_addsy))))                      \
 128    || (FIX)->fx_r_type == BFD_RELOC_16                                  \
 129    || (FIX)->fx_r_type == BFD_RELOC_32)
 130 #endif
 131
 132 #define elf_tc_final_processing sparc_elf_final_processing
 133 extern void sparc_elf_final_processing PARAMS ((void));
 134
 135 #define md_operand(x)
 136
 137 extern void sparc_md_end PARAMS ((void));
 138 #define md_end() sparc_md_end ()
 139
 140 #endif
 141
 142 #ifdef OBJ_ELF
 143 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) sparc_cons (EXP, NBYTES)
 144 extern void sparc_cons PARAMS ((expressionS *, int));
 145 #endif
 146
 147 #define TC_CONS_FIX_NEW cons_fix_new_sparc
 148 extern void cons_fix_new_sparc
 149   PARAMS ((struct frag *, int, unsigned int, struct expressionS *));
 150
 151 #define TC_FIX_TYPE     valueT
 152
 153 #define TC_INIT_FIX_DATA(X)                     \
 154   do                                            \
 155      {                                          \
 156        (X)->tc_fix_data = 0;                    \
 157      }                                          \
 158   while (0)
 159
 160 #define TC_FIX_DATA_PRINT(FILE, FIX)                                    \
 161   do                                                                    \
 162     {                                                                   \
 163       fprintf ((FILE), "addend2=%ld\n",                                 \
 164               (unsigned long) (FIX)->tc_fix_data);                      \
 165     }                                                                   \
 166   while (0)
 167
 168 #define TARGET_USE_CFIPOP 1
 169
 170 #define tc_cfi_frame_initial_instructions sparc_cfi_frame_initial_instructions
 171 extern void sparc_cfi_frame_initial_instructions PARAMS ((void));
 172
 173 #define tc_regname_to_dw2regnum sparc_regname_to_dw2regnum
 174 extern int sparc_regname_to_dw2regnum PARAMS ((char *regname));
 175
 176 #define tc_cfi_emit_pcrel_expr sparc_cfi_emit_pcrel_expr
 177 extern void sparc_cfi_emit_pcrel_expr PARAMS ((expressionS *, unsigned int));
 178
 179 extern int sparc_cie_data_alignment;
 180
 181 #define DWARF2_LINE_MIN_INSN_LENGTH     4
 182 #define DWARF2_DEFAULT_RETURN_COLUMN    15
 183 #define DWARF2_CIE_DATA_ALIGNMENT       sparc_cie_data_alignment
 184
 185 /* end of tc-sparc.h */