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, 2006, 2007, 2008
   4    Free Software Foundation, Inc.
   5
   6    This file is part of GAS, the GNU Assembler.
   7
   8    GAS is free software; you can redistribute it and/or modify
   9    it under the terms of the GNU General Public License as
  10    published by the Free Software Foundation; either version 3,
  11    or (at your option) any later version.
  12
  13    GAS is distributed in the hope that it will be useful, but
  14    WITHOUT ANY WARRANTY; without even the implied warranty of
  15    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  16    the GNU General Public License for more details.
  17
  18    You should have received a copy of the GNU General Public
  19    License along with GAS; see the file COPYING.  If not, write
  20    to the Free Software Foundation, 51 Franklin Street - Fifth Floor,
  21    Boston, MA 02110-1301, USA.  */
  22
  23 #ifndef TC_SPARC
  24 #define TC_SPARC 1
  25
  26 struct frag;
  27
  28 /* This is used to set the default value for `target_big_endian'.  */
  29 #define TARGET_BYTES_BIG_ENDIAN 1
  30
  31 #define LOCAL_LABELS_FB 1
  32
  33 #define TARGET_ARCH bfd_arch_sparc
  34
  35 #ifdef TE_FreeBSD
  36 #define ELF_TARGET_FORMAT       "elf32-sparc-freebsd"
  37 #define ELF64_TARGET_FORMAT     "elf64-sparc-freebsd"
  38 #endif
  39
  40 #ifndef ELF_TARGET_FORMAT
  41 #define ELF_TARGET_FORMAT       "elf32-sparc"
  42 #endif
  43
  44 #ifndef ELF64_TARGET_FORMAT
  45 #define ELF64_TARGET_FORMAT     "elf64-sparc"
  46 #endif
  47
  48 extern const char *sparc_target_format (void);
  49 #define TARGET_FORMAT sparc_target_format ()
  50
  51 #define RELOC_EXPANSION_POSSIBLE
  52 #define MAX_RELOC_EXPANSION 2
  53
  54 /* Make it unconditional and check if -EL is valid after option parsing */
  55 #define SPARC_BIENDIAN
  56
  57 #define WORKING_DOT_WORD
  58
  59 #define md_convert_frag(b,s,f) \
  60   as_fatal (_("sparc convert_frag\n"))
  61 #define md_estimate_size_before_relax(f,s) \
  62   (as_fatal (_("estimate_size_before_relax called")), 1)
  63
  64 #define LISTING_HEADER "SPARC GAS "
  65
  66 extern int sparc_pic_code;
  67
  68 /* We require .word, et. al., to be aligned correctly.  */
  69 #define md_cons_align(nbytes) sparc_cons_align (nbytes)
  70 extern void sparc_cons_align (int);
  71
  72 #define HANDLE_ALIGN(fragp) sparc_handle_align (fragp)
  73 extern void sparc_handle_align (struct frag *);
  74
  75 #define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4 + 4)
  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    || (sparc_pic_code                           \
  96        && S_IS_EXTERNAL ((FIX)->fx_addsy))      \
  97    || TC_FORCE_RELOCATION (FIX))
  98 #endif
  99
 100 #ifdef OBJ_ELF
 101 /* Don't turn certain relocs into relocations against sections.  This
 102    is required for the dynamic linker to operate properly.  When
 103    generating PIC, we need to keep any non PC relative reloc.  The PIC
 104    part of this test must be parallel to the code in tc_gen_reloc which
 105    converts relocations to GOT relocations.  */
 106 #define tc_fix_adjustable(FIX)                                          \
 107   ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT                         \
 108    && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY                        \
 109    && ((FIX)->fx_r_type < BFD_RELOC_SPARC_TLS_GD_HI22                   \
 110        || (FIX)->fx_r_type > BFD_RELOC_SPARC_TLS_TPOFF64)               \
 111    && (! sparc_pic_code                                                 \
 112        || ((FIX)->fx_r_type != BFD_RELOC_HI22                           \
 113            && (FIX)->fx_r_type != BFD_RELOC_LO10                        \
 114            && (FIX)->fx_r_type != BFD_RELOC_SPARC13                     \
 115            && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2                \
 116                || !generic_force_reloc (FIX))                           \
 117            && ((FIX)->fx_pcrel                                          \
 118                || ((FIX)->fx_subsy != NULL                              \
 119                    && (S_GET_SEGMENT ((FIX)->fx_subsy)                  \
 120                        == S_GET_SEGMENT ((FIX)->fx_addsy)))             \
 121                || S_IS_LOCAL ((FIX)->fx_addsy)))))
 122
 123 /* Values passed to md_apply_fix don't include the symbol value.  */
 124 #define MD_APPLY_SYM_VALUE(FIX) 0
 125
 126 /* Finish up the entire symtab.  */
 127 #define tc_adjust_symtab() sparc_adjust_symtab ()
 128 extern void sparc_adjust_symtab (void);
 129 #endif
 130
 131 #ifdef OBJ_AOUT
 132 /* When generating PIC code, we must not adjust any reloc which will
 133    turn into a reloc against the global offset table, nor any reloc
 134    which we will need if a symbol is overridden.  */
 135 #define tc_fix_adjustable(FIX)                                          \
 136   (! sparc_pic_code                                                     \
 137    || ((FIX)->fx_pcrel                                                  \
 138        && ((FIX)->fx_addsy == NULL                                      \
 139            || (! S_IS_EXTERNAL ((FIX)->fx_addsy)                        \
 140                && ! S_IS_WEAK ((FIX)->fx_addsy))))                      \
 141    || (FIX)->fx_r_type == BFD_RELOC_16                                  \
 142    || (FIX)->fx_r_type == BFD_RELOC_32)
 143 #endif
 144
 145 #define elf_tc_final_processing sparc_elf_final_processing
 146 extern void sparc_elf_final_processing (void);
 147
 148 #define md_operand(x)
 149
 150 extern void sparc_md_end (void);
 151 #define md_end() sparc_md_end ()
 152
 153 #endif
 154
 155 #ifdef OBJ_ELF
 156 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) sparc_cons (EXP, NBYTES)
 157 extern void sparc_cons (expressionS *, int);
 158 #endif
 159
 160 #define TC_CONS_FIX_NEW cons_fix_new_sparc
 161 extern void cons_fix_new_sparc
 162   (struct frag *, int, unsigned int, struct expressionS *);
 163
 164 #define TC_FIX_TYPE     valueT
 165
 166 #define TC_INIT_FIX_DATA(X)                     \
 167   do                                            \
 168      {                                          \
 169        (X)->tc_fix_data = 0;                    \
 170      }                                          \
 171   while (0)
 172
 173 #define TC_FIX_DATA_PRINT(FILE, FIX)                                    \
 174   do                                                                    \
 175     {                                                                   \
 176       fprintf ((FILE), "addend2=%ld\n",                                 \
 177               (unsigned long) (FIX)->tc_fix_data);                      \
 178     }                                                                   \
 179   while (0)
 180
 181 #define TARGET_USE_CFIPOP 1
 182
 183 #define tc_cfi_frame_initial_instructions sparc_cfi_frame_initial_instructions
 184 extern void sparc_cfi_frame_initial_instructions (void);
 185
 186 #define tc_regname_to_dw2regnum sparc_regname_to_dw2regnum
 187 extern int sparc_regname_to_dw2regnum (char *regname);
 188
 189 #define tc_cfi_emit_pcrel_expr sparc_cfi_emit_pcrel_expr
 190 extern void sparc_cfi_emit_pcrel_expr (expressionS *, unsigned int);
 191
 192 extern int sparc_cie_data_alignment;
 193
 194 #define DWARF2_LINE_MIN_INSN_LENGTH     4
 195 #define DWARF2_DEFAULT_RETURN_COLUMN    15
 196 #define DWARF2_CIE_DATA_ALIGNMENT       sparc_cie_data_alignment
 197
 198 /* end of tc-sparc.h */