gas/config/tc-cris.h

   1 /* tc-cris.h -- Header file for tc-cris.c, the CRIS GAS port.
   2    Copyright (C) 2000-2020 Free Software Foundation, Inc.
   3
   4    Contributed by Axis Communications AB, Lund, Sweden.
   5    Originally written for GAS 1.38.1 by Mikael Asker.
   6    Updates, BFDizing, GNUifying and ELF by Hans-Peter Nilsson.
   7
   8    This file is part of GAS, the GNU Assembler.
   9
  10    GAS is free software; you can redistribute it and/or modify
  11    it under the terms of the GNU General Public License as published by
  12    the Free Software Foundation; either version 3, or (at your option)
  13    any later version.
  14
  15    GAS is distributed in the hope that it will be useful,
  16    but WITHOUT ANY WARRANTY; without even the implied warranty of
  17    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18    GNU General Public License for more details.
  19
  20    You should have received a copy of the GNU General Public License
  21    along with GAS; see the file COPYING.  If not, write to the
  22    Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
  23    MA 02110-1301, USA.  */
  24
  25 /* See the GAS "internal" document for general documentation on this.
  26    It is called internals.texi (internals.info when makeinfo:d), but is
  27    not installed or makeinfo:d by "make info".  */
  28
  29 /* Functions and variables that aren't declared in tc.h are declared here,
  30    with the type/prototype that is used in the local extern-declaration of
  31    their usage.  */
  32
  33 #ifndef TC_CRIS
  34 #define TC_CRIS
  35
  36 /* Multi-target support is always on.  */
  37 extern const char *cris_target_format (void);
  38 #define TARGET_FORMAT cris_target_format ()
  39
  40 #define TARGET_ARCH bfd_arch_cris
  41
  42 extern unsigned int cris_mach (void);
  43 #define TARGET_MACH (cris_mach ())
  44
  45 #define TARGET_BYTES_BIG_ENDIAN 0
  46
  47 extern const char *md_shortopts;
  48 extern struct option md_longopts[];
  49 extern size_t md_longopts_size;
  50
  51 extern const pseudo_typeS md_pseudo_table[];
  52
  53 #define tc_comment_chars cris_comment_chars
  54 extern const char cris_comment_chars[];
  55 extern const char line_comment_chars[];
  56 extern const char line_separator_chars[];
  57
  58 /* This should be optional, since it is ignored as an escape (assumed to
  59    be itself) if it is not recognized.  */
  60 #define ONLY_STANDARD_ESCAPES
  61
  62 /* Note that we do not define TC_EQUAL_IN_INSN, since its current use is
  63    in the instruction rather than the operand, and thus does not come to
  64    use for side-effect assignments such as "and.d [r0 = r1 + 42], r3".  */
  65 #define md_operand(x)
  66
  67 #define md_number_to_chars number_to_chars_littleendian
  68 extern const struct relax_type md_cris_relax_table[];
  69 #define TC_GENERIC_RELAX_TABLE md_cris_relax_table
  70
  71 long cris_relax_frag (segT, fragS *, long);
  72
  73 /* GAS only handles relaxations for pc-relative data targeting addresses
  74    in the same segment, so we have to handle the rest on our own.  */
  75 #define md_relax_frag(SEG, FRAGP, STRETCH)              \
  76  ((FRAGP)->fr_symbol != NULL                            \
  77   && S_GET_SEGMENT ((FRAGP)->fr_symbol) == (SEG)        \
  78   ? relax_frag (SEG, FRAGP, STRETCH)                    \
  79   : cris_relax_frag (SEG, FRAGP, STRETCH))
  80
  81 #define TC_FORCE_RELOCATION(FIX) md_cris_force_relocation (FIX)
  82 extern int md_cris_force_relocation (struct fix *);
  83
  84 #define IS_CRIS_PIC_RELOC(RTYPE)                        \
  85   ((RTYPE) == BFD_RELOC_CRIS_16_GOT                     \
  86    || (RTYPE) == BFD_RELOC_CRIS_32_GOT                  \
  87    || (RTYPE) == BFD_RELOC_CRIS_16_GOTPLT               \
  88    || (RTYPE) == BFD_RELOC_CRIS_32_GOTPLT               \
  89    || (RTYPE) == BFD_RELOC_CRIS_32_GOTREL               \
  90    || (RTYPE) == BFD_RELOC_CRIS_32_PLT_GOTREL           \
  91    || (RTYPE) == BFD_RELOC_CRIS_32_PLT_PCREL)
  92
  93 /* Make sure we don't resolve fixups for which we want to emit dynamic
  94    relocations.  */
  95 #define TC_FORCE_RELOCATION_LOCAL(FIX)                  \
  96   (GENERIC_FORCE_RELOCATION_LOCAL (FIX)                 \
  97    || IS_CRIS_PIC_RELOC ((FIX)->fx_r_type))
  98
  99 /* For some reloc types, don't adjust fixups by reducing to a section
 100    symbol.  */
 101 #define tc_fix_adjustable(FIX)                          \
 102  ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT          \
 103   && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY         \
 104   && (! IS_CRIS_PIC_RELOC ((FIX)->fx_r_type)            \
 105       || (FIX)->fx_r_type == BFD_RELOC_CRIS_32_GOTREL))
 106
 107 /* FIXME: This *should* be a redundant definition, as the
 108    TC_FORCE_RELOCATION* definitions already told about the cases where
 109    we *don't* want the symbol value calculated.  Here we seem to answer
 110    the "are you sure" question.  It certainly has very little to do with
 111    whether the symbol value is passed to md_apply_fix.  */
 112 #define MD_APPLY_SYM_VALUE(FIX) 0
 113
 114 /* When we have fixups against constant expressions, we get a GAS-specific
 115    section symbol at no extra charge for obscure reasons in
 116    adjust_reloc_syms.  Since ELF outputs section symbols, it gladly
 117    outputs this "*ABS*" symbol in every object.  Avoid that.
 118    Also, don't emit undefined symbols (that aren't used in relocations).
 119    They pop up when tentatively parsing register names as symbols.  */
 120 #define tc_frob_symbol(symp, punt)                      \
 121  do {                                                   \
 122   if ((OUTPUT_FLAVOR == bfd_target_elf_flavour          \
 123        && (symp) == section_symbol (absolute_section))  \
 124       || ! S_IS_DEFINED (symp))                         \
 125     (punt) = 1;                                         \
 126  } while (0)
 127
 128 #define LISTING_HEADER "GAS for CRIS"
 129
 130 #if 0
 131 /* The testsuite does not let me define these, although they IMHO should
 132    be preferred over the default.  */
 133 #define LISTING_WORD_SIZE 2
 134 #define LISTING_LHS_WIDTH 4
 135 #define LISTING_LHS_WIDTH_SECOND 4
 136 #endif
 137
 138 /* END of declaration and definitions described in the "internals"
 139    document.  */
 140
 141 /* Do this, or we will never know what hit us when the
 142    broken-word-fixes break.  Do _not_ use WARN_SIGNED_OVERFLOW_WORD,
 143    it is only for use with WORKING_DOT_WORD and warns about most stuff.
 144    (still in 2.9.1).  */
 145 struct broken_word;
 146 extern void tc_cris_check_adjusted_broken_word (offsetT,
 147                                                 struct broken_word *);
 148 #define TC_CHECK_ADJUSTED_BROKEN_DOT_WORD(new_offset, brokw) \
 149  tc_cris_check_adjusted_broken_word ((offsetT) (new_offset), brokw)
 150
 151 /* We don't want any implicit alignment, so we do nothing.  */
 152 #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR) do { } while (0)
 153
 154 /* CRIS instructions, with operands and prefixes included, are a multiple
 155    of two bytes long.  */
 156 #define DWARF2_LINE_MIN_INSN_LENGTH 2
 157
 158 /* Make port immune to unwanted difference in te-generic.h vs. te-linux.h.  */
 159 #define LOCAL_LABELS_DOLLAR 1
 160
 161 #endif /* TC_CRIS */
 162 /*
 163  * Local variables:
 164  * eval: (c-set-style "gnu")
 165  * indent-tabs-mode: t
 166  * End:
 167  */