gas/config/tc-sparc.h

   1 /* tc-sparc.h - Macros and type defines for the sparc.
   2    Copyright (C) 1989-2016 Free Software Foundation, Inc.
   3
   4    This file is part of GAS, the GNU Assembler.
   5
   6    GAS is free software; you can redistribute it and/or modify
   7    it under the terms of the GNU General Public License as
   8    published by the Free Software Foundation; either version 3,
   9    or (at your option) any later version.
  10
  11    GAS is distributed in the hope that it will be useful, but
  12    WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See
  14    the GNU General Public License for more details.
  15
  16    You should have received a copy of the GNU General Public
  17    License along with GAS; see the file COPYING.  If not, write
  18    to the Free Software Foundation, 51 Franklin Street - Fifth Floor,
  19    Boston, MA 02110-1301, USA.  */
  20
  21 #ifndef TC_SPARC
  22 #define TC_SPARC 1
  23
  24 struct frag;
  25
  26 /* This is used to set the default value for `target_big_endian'.  */
  27 #define TARGET_BYTES_BIG_ENDIAN 1
  28
  29 #define LOCAL_LABELS_FB 1
  30
  31 #define TARGET_ARCH bfd_arch_sparc
  32
  33 #ifdef TE_FreeBSD
  34 #define ELF_TARGET_FORMAT       "elf32-sparc"
  35 #define ELF64_TARGET_FORMAT     "elf64-sparc-freebsd"
  36 #endif
  37
  38 #ifdef TE_SOLARIS
  39 #define ELF_TARGET_FORMAT       "elf32-sparc-sol2"
  40 #define ELF64_TARGET_FORMAT     "elf64-sparc-sol2"
  41 #endif
  42
  43 #ifndef ELF_TARGET_FORMAT
  44 #define ELF_TARGET_FORMAT       "elf32-sparc"
  45 #endif
  46
  47 #ifndef ELF64_TARGET_FORMAT
  48 #define ELF64_TARGET_FORMAT     "elf64-sparc"
  49 #endif
  50
  51 extern const char *sparc_target_format (void);
  52 #define TARGET_FORMAT sparc_target_format ()
  53
  54 #define RELOC_EXPANSION_POSSIBLE
  55 #define MAX_RELOC_EXPANSION 2
  56
  57 /* Make it unconditional and check if -EL is valid after option parsing */
  58 #define SPARC_BIENDIAN
  59
  60 #define WORKING_DOT_WORD
  61
  62 #define md_convert_frag(b,s,f) \
  63   as_fatal (_("sparc convert_frag\n"))
  64 #define md_estimate_size_before_relax(f,s) \
  65   (as_fatal (_("estimate_size_before_relax called")), 1)
  66
  67 #define LISTING_HEADER "SPARC GAS "
  68
  69 extern int sparc_pic_code;
  70
  71 /* We require .word, et. al., to be aligned correctly.  */
  72 #define md_cons_align(nbytes) sparc_cons_align (nbytes)
  73 extern void sparc_cons_align (int);
  74
  75 #define HANDLE_ALIGN(fragp) sparc_handle_align (fragp)
  76 extern void sparc_handle_align (struct frag *);
  77
  78 #define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4 + 4)
  79
  80 /* I know that "call 0" fails in sparc-coff if this doesn't return 1.  I
  81    don't know about other relocation types, or other formats, yet.  */
  82 #ifdef OBJ_COFF
  83 #define TC_FORCE_RELOCATION_ABS(FIX)            \
  84   ((FIX)->fx_r_type == BFD_RELOC_32_PCREL_S2    \
  85    || TC_FORCE_RELOCATION (FIX))
  86
  87 #define RELOC_REQUIRES_SYMBOL
  88 #endif
  89
  90 #ifdef OBJ_AOUT
  91 /* This expression evaluates to true if the relocation is for a local
  92    object for which we still want to do the relocation at runtime.
  93    False if we are willing to perform this relocation while building
  94    the .o file.  */
  95
  96 #define TC_FORCE_RELOCATION_LOCAL(FIX)          \
  97   (!(FIX)->fx_pcrel                             \
  98    || (sparc_pic_code                           \
  99        && S_IS_EXTERNAL ((FIX)->fx_addsy))      \
 100    || TC_FORCE_RELOCATION (FIX))
 101 #endif
 102
 103 #ifdef OBJ_ELF
 104 /* Don't turn certain relocs into relocations against sections.  This
 105    is required for the dynamic linker to operate properly.  When
 106    generating PIC, we need to keep any non PC relative reloc.  The PIC
 107    part of this test must be parallel to the code in tc_gen_reloc which
 108    converts relocations to GOT relocations.  */
 109 #define tc_fix_adjustable(FIX)                                          \
 110   ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT                         \
 111    && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY                        \
 112    && ((FIX)->fx_r_type < BFD_RELOC_SPARC_TLS_GD_HI22                   \
 113        || (FIX)->fx_r_type > BFD_RELOC_SPARC_TLS_TPOFF64)               \
 114    && (! sparc_pic_code                                                 \
 115        || ((FIX)->fx_r_type != BFD_RELOC_HI22                           \
 116            && (FIX)->fx_r_type != BFD_RELOC_LO10                        \
 117            && (FIX)->fx_r_type != BFD_RELOC_SPARC13                     \
 118            && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2                \
 119                || !generic_force_reloc (FIX))                           \
 120            && ((FIX)->fx_pcrel                                          \
 121                || ((FIX)->fx_subsy != NULL                              \
 122                    && (S_GET_SEGMENT ((FIX)->fx_subsy)                  \
 123                        == S_GET_SEGMENT ((FIX)->fx_addsy)))             \
 124                || S_IS_LOCAL ((FIX)->fx_addsy)))))
 125
 126 /* Values passed to md_apply_fix don't include the symbol value.  */
 127 #define MD_APPLY_SYM_VALUE(FIX) 0
 128
 129 /* Finish up the entire symtab.  */
 130 #define tc_adjust_symtab() sparc_adjust_symtab ()
 131 extern void sparc_adjust_symtab (void);
 132 #endif
 133
 134 #ifdef OBJ_AOUT
 135 /* When generating PIC code, we must not adjust any reloc which will
 136    turn into a reloc against the global offset table, nor any reloc
 137    which we will need if a symbol is overridden.  */
 138 #define tc_fix_adjustable(FIX)                                          \
 139   (! sparc_pic_code                                                     \
 140    || ((FIX)->fx_pcrel                                                  \
 141        && ((FIX)->fx_addsy == NULL                                      \
 142            || (! S_IS_EXTERNAL ((FIX)->fx_addsy)                        \
 143                && ! S_IS_WEAK ((FIX)->fx_addsy))))                      \
 144    || (FIX)->fx_r_type == BFD_RELOC_16                                  \
 145    || (FIX)->fx_r_type == BFD_RELOC_32)
 146 #endif
 147
 148 #define elf_tc_final_processing sparc_elf_final_processing
 149 extern void sparc_elf_final_processing (void);
 150
 151 #define md_operand(x)
 152
 153 extern void sparc_md_end (void);
 154 #define md_end() sparc_md_end ()
 155
 156 #endif
 157
 158 #define TC_PARSE_CONS_RETURN_TYPE const char *
 159 #define TC_PARSE_CONS_RETURN_NONE NULL
 160
 161 #ifdef OBJ_ELF
 162 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) sparc_cons (EXP, NBYTES)
 163 extern const char *sparc_cons (expressionS *, int);
 164 #endif
 165
 166 #define TC_CONS_FIX_NEW cons_fix_new_sparc
 167 extern void cons_fix_new_sparc
 168 (struct frag *, int, unsigned int, struct expressionS *, const char *);
 169
 170 #define TC_FIX_TYPE     valueT
 171
 172 #define TC_INIT_FIX_DATA(X)                     \
 173   do                                            \
 174      {                                          \
 175        (X)->tc_fix_data = 0;                    \
 176      }                                          \
 177   while (0)
 178
 179 #define TC_FIX_DATA_PRINT(FILE, FIX)                                    \
 180   do                                                                    \
 181     {                                                                   \
 182       fprintf ((FILE), "addend2=%ld\n",                                 \
 183               (unsigned long) (FIX)->tc_fix_data);                      \
 184     }                                                                   \
 185   while (0)
 186
 187 #define TARGET_USE_CFIPOP 1
 188
 189 #define tc_cfi_frame_initial_instructions sparc_cfi_frame_initial_instructions
 190 extern void sparc_cfi_frame_initial_instructions (void);
 191
 192 #define tc_regname_to_dw2regnum sparc_regname_to_dw2regnum
 193 extern int sparc_regname_to_dw2regnum (char *regname);
 194
 195 #define tc_cfi_emit_pcrel_expr sparc_cfi_emit_pcrel_expr
 196 extern void sparc_cfi_emit_pcrel_expr (expressionS *, unsigned int);
 197
 198 extern int sparc_cie_data_alignment;
 199
 200 #define DWARF2_LINE_MIN_INSN_LENGTH     4
 201 #define DWARF2_DEFAULT_RETURN_COLUMN    15
 202 #define DWARF2_CIE_DATA_ALIGNMENT       sparc_cie_data_alignment
 203
 204 /* end of tc-sparc.h */