gas/config/tc-sparc.h

   1 /* tc-sparc.h - Macros and type defines for the sparc.
   2    Copyright (C) 1989-2018 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 extern unsigned long sparc_mach (void);
  34 #define TARGET_MACH sparc_mach ()
  35
  36 #ifdef TE_FreeBSD
  37 #define ELF_TARGET_FORMAT       "elf32-sparc"
  38 #define ELF64_TARGET_FORMAT     "elf64-sparc-freebsd"
  39 #endif
  40
  41 #ifdef TE_SOLARIS
  42 #define ELF_TARGET_FORMAT       "elf32-sparc-sol2"
  43 #define ELF64_TARGET_FORMAT     "elf64-sparc-sol2"
  44 #endif
  45
  46 #ifndef ELF_TARGET_FORMAT
  47 #define ELF_TARGET_FORMAT       "elf32-sparc"
  48 #endif
  49
  50 #ifndef ELF64_TARGET_FORMAT
  51 #define ELF64_TARGET_FORMAT     "elf64-sparc"
  52 #endif
  53
  54 extern const char *sparc_target_format (void);
  55 #define TARGET_FORMAT sparc_target_format ()
  56
  57 #define RELOC_EXPANSION_POSSIBLE
  58 #define MAX_RELOC_EXPANSION 2
  59
  60 /* Make it unconditional and check if -EL is valid after option parsing */
  61 #define SPARC_BIENDIAN
  62
  63 #define WORKING_DOT_WORD
  64
  65 #define md_convert_frag(b,s,f) \
  66   as_fatal (_("sparc convert_frag\n"))
  67 #define md_estimate_size_before_relax(f,s) \
  68   (as_fatal (_("estimate_size_before_relax called")), 1)
  69
  70 #define LISTING_HEADER "SPARC GAS "
  71
  72 extern int sparc_pic_code;
  73
  74 /* We require .word, et. al., to be aligned correctly.  */
  75 #define md_cons_align(nbytes) sparc_cons_align (nbytes)
  76 extern void sparc_cons_align (int);
  77
  78 #define HANDLE_ALIGN(fragp) sparc_handle_align (fragp)
  79 extern void sparc_handle_align (struct frag *);
  80
  81 #define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4 + 4)
  82
  83 #define DIFF_EXPR_OK    /* foo-. gets turned into PC relative relocs */
  84
  85 /* I know that "call 0" fails in sparc-coff if this doesn't return 1.  I
  86    don't know about other relocation types, or other formats, yet.  */
  87 #ifdef OBJ_COFF
  88 #define TC_FORCE_RELOCATION_ABS(FIX)            \
  89   ((FIX)->fx_r_type == BFD_RELOC_32_PCREL_S2    \
  90    || TC_FORCE_RELOCATION (FIX))
  91
  92 #define RELOC_REQUIRES_SYMBOL
  93 #endif
  94
  95 #ifdef OBJ_AOUT
  96 /* This expression evaluates to true if the relocation is for a local
  97    object for which we still want to do the relocation at runtime.
  98    False if we are willing to perform this relocation while building
  99    the .o file.  */
 100
 101 #define TC_FORCE_RELOCATION_LOCAL(FIX)          \
 102   (GENERIC_FORCE_RELOCATION_LOCAL (FIX)         \
 103    || (sparc_pic_code                           \
 104        && S_IS_EXTERNAL ((FIX)->fx_addsy)))
 105 #endif
 106
 107 #ifdef OBJ_ELF
 108 /* Don't turn certain relocs into relocations against sections.  This
 109    is required for the dynamic linker to operate properly.  When
 110    generating PIC, we need to keep any non PC relative reloc.  The PIC
 111    part of this test must be parallel to the code in tc_gen_reloc which
 112    converts relocations to GOT relocations.  */
 113 #define tc_fix_adjustable(FIX)                                          \
 114   ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT                         \
 115    && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY                        \
 116    && ((FIX)->fx_r_type < BFD_RELOC_SPARC_TLS_GD_HI22                   \
 117        || (FIX)->fx_r_type > BFD_RELOC_SPARC_TLS_TPOFF64)               \
 118    && (! sparc_pic_code                                                 \
 119        || ((FIX)->fx_r_type != BFD_RELOC_HI22                           \
 120            && (FIX)->fx_r_type != BFD_RELOC_LO10                        \
 121            && (FIX)->fx_r_type != BFD_RELOC_SPARC13                     \
 122            && ((FIX)->fx_r_type != BFD_RELOC_32_PCREL_S2                \
 123                || !generic_force_reloc (FIX))                           \
 124            && ((FIX)->fx_pcrel                                          \
 125                || ((FIX)->fx_subsy != NULL                              \
 126                    && (S_GET_SEGMENT ((FIX)->fx_subsy)                  \
 127                        == S_GET_SEGMENT ((FIX)->fx_addsy)))             \
 128                || S_IS_LOCAL ((FIX)->fx_addsy)))))
 129
 130 /* Values passed to md_apply_fix don't include the symbol value.  */
 131 #define MD_APPLY_SYM_VALUE(FIX) 0
 132
 133 /* Finish up the entire symtab.  */
 134 #define tc_adjust_symtab() sparc_adjust_symtab ()
 135 extern void sparc_adjust_symtab (void);
 136
 137 /* Don't allow the generic code to convert fixups involving the
 138    subtraction of a label in the current section to pc-relative if we
 139    don't have the necessary pc-relative relocation.  */
 140 #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX, SEG)         \
 141   (!((FIX)->fx_r_type == BFD_RELOC_64                   \
 142      || (FIX)->fx_r_type == BFD_RELOC_32                \
 143      || (FIX)->fx_r_type == BFD_RELOC_16                \
 144      || (FIX)->fx_r_type == BFD_RELOC_8))
 145 #endif
 146
 147 #ifdef OBJ_AOUT
 148 /* When generating PIC code, we must not adjust any reloc which will
 149    turn into a reloc against the global offset table, nor any reloc
 150    which we will need if a symbol is overridden.  */
 151 #define tc_fix_adjustable(FIX)                                          \
 152   (! sparc_pic_code                                                     \
 153    || ((FIX)->fx_pcrel                                                  \
 154        && ((FIX)->fx_addsy == NULL                                      \
 155            || (! S_IS_EXTERNAL ((FIX)->fx_addsy)                        \
 156                && ! S_IS_WEAK ((FIX)->fx_addsy))))                      \
 157    || (FIX)->fx_r_type == BFD_RELOC_16                                  \
 158    || (FIX)->fx_r_type == BFD_RELOC_32)
 159 #endif
 160
 161 #define elf_tc_final_processing sparc_elf_final_processing
 162 extern void sparc_elf_final_processing (void);
 163
 164 #define md_operand(x)
 165
 166 extern void sparc_md_end (void);
 167 #define md_end() sparc_md_end ()
 168
 169 #endif
 170
 171 #define TC_PARSE_CONS_RETURN_TYPE const char *
 172 #define TC_PARSE_CONS_RETURN_NONE NULL
 173
 174 #ifdef OBJ_ELF
 175 #define TC_PARSE_CONS_EXPRESSION(EXP, NBYTES) sparc_cons (EXP, NBYTES)
 176 extern const char *sparc_cons (expressionS *, int);
 177 #endif
 178
 179 #define TC_CONS_FIX_NEW cons_fix_new_sparc
 180 extern void cons_fix_new_sparc
 181 (struct frag *, int, unsigned int, struct expressionS *, const char *);
 182
 183 #define TC_FIX_TYPE     valueT
 184
 185 #define TC_INIT_FIX_DATA(X)                     \
 186   do                                            \
 187      {                                          \
 188        (X)->tc_fix_data = 0;                    \
 189      }                                          \
 190   while (0)
 191
 192 #define TC_FIX_DATA_PRINT(FILE, FIX)                                    \
 193   do                                                                    \
 194     {                                                                   \
 195       fprintf ((FILE), "addend2=%ld\n",                                 \
 196               (unsigned long) (FIX)->tc_fix_data);                      \
 197     }                                                                   \
 198   while (0)
 199
 200 #define TARGET_USE_CFIPOP 1
 201
 202 #define tc_cfi_frame_initial_instructions sparc_cfi_frame_initial_instructions
 203 extern void sparc_cfi_frame_initial_instructions (void);
 204
 205 #define tc_regname_to_dw2regnum sparc_regname_to_dw2regnum
 206 extern int sparc_regname_to_dw2regnum (char *regname);
 207
 208 #define tc_cfi_emit_pcrel_expr sparc_cfi_emit_pcrel_expr
 209 extern void sparc_cfi_emit_pcrel_expr (expressionS *, unsigned int);
 210
 211 extern int sparc_cie_data_alignment;
 212
 213 #define DWARF2_LINE_MIN_INSN_LENGTH     4
 214 #define DWARF2_DEFAULT_RETURN_COLUMN    15
 215 #define DWARF2_CIE_DATA_ALIGNMENT       sparc_cie_data_alignment
 216
 217 /* cons_fix_new_sparc will chooose BFD_RELOC_SPARC_UA32 for the difference
 218    expressions, but there is no corresponding PC-relative relocation; as this
 219    is for debugging info though, alignment does not matter, so by disabling
 220    this, BFD_RELOC_32_PCREL will be emitted directly instead.  */
 221 #define CFI_DIFF_EXPR_OK 0
 222
 223 /* end of tc-sparc.h */