gas/config/tc-cris.h

   1 /* tc-cris.h -- Header file for tc-cris.c, the CRIS GAS port.
   2    Copyright 2000, 2001, 2002 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 2, 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, 59 Temple Place - Suite 330, Boston,
  23    MA 02111-1307, 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 PARAMS ((void));
  38 #define TARGET_FORMAT cris_target_format ()
  39
  40 #define TARGET_ARCH bfd_arch_cris
  41
  42 #define TARGET_BYTES_BIG_ENDIAN 0
  43
  44 extern const char *md_shortopts;
  45 extern struct option md_longopts[];
  46 extern size_t md_longopts_size;
  47
  48 extern const pseudo_typeS md_pseudo_table[];
  49
  50 #define tc_comment_chars cris_comment_chars
  51 extern const char cris_comment_chars[];
  52 extern const char line_comment_chars[];
  53 extern const char line_separator_chars[];
  54 extern const char EXP_CHARS[];
  55 extern const char FLT_CHARS[];
  56
  57 /* This should be optional, since it is ignored as an escape (assumed to
  58    be itself) if it is not recognized.  */
  59 #define ONLY_STANDARD_ESCAPES
  60
  61 /* Note that we do not define TC_EQUAL_IN_INSN, since its current use is
  62    in the instruction rather than the operand, and thus does not come to
  63    use for side-effect assignments such as "and.d [r0 = r1 + 42], r3".  */
  64 #define md_operand(x)
  65
  66 #define md_number_to_chars number_to_chars_littleendian
  67
  68 extern const int md_short_jump_size;
  69 extern const int md_long_jump_size;
  70
  71 /* There's no use having different functions for this; the sizes are the
  72    same.  Note that we can't #define md_short_jump_size here.  */
  73 #define md_create_short_jump md_create_long_jump
  74
  75 extern const struct relax_type md_cris_relax_table[];
  76 #define TC_GENERIC_RELAX_TABLE md_cris_relax_table
  77
  78 long cris_relax_frag PARAMS ((segT, fragS *, long));
  79
  80 /* GAS only handles relaxations for pc-relative data targeting addresses
  81    in the same segment, so we have to handle the rest on our own.  */
  82 #define md_relax_frag(SEG, FRAGP, STRETCH)              \
  83  ((FRAGP)->fr_symbol != NULL                            \
  84   && S_GET_SEGMENT ((FRAGP)->fr_symbol) == (SEG)        \
  85   ? relax_frag (SEG, FRAGP, STRETCH)                    \
  86   : cris_relax_frag (SEG, FRAGP, STRETCH))
  87
  88 #define TC_FORCE_RELOCATION(FIX) md_cris_force_relocation (FIX)
  89 extern int md_cris_force_relocation PARAMS ((struct fix *));
  90
  91 #define IS_CRIS_PIC_RELOC(RTYPE)                        \
  92   ((RTYPE) == BFD_RELOC_CRIS_16_GOT                     \
  93    || (RTYPE) == BFD_RELOC_CRIS_32_GOT                  \
  94    || (RTYPE) == BFD_RELOC_CRIS_16_GOTPLT               \
  95    || (RTYPE) == BFD_RELOC_CRIS_32_GOTPLT               \
  96    || (RTYPE) == BFD_RELOC_CRIS_32_GOTREL               \
  97    || (RTYPE) == BFD_RELOC_CRIS_32_PLT_GOTREL           \
  98    || (RTYPE) == BFD_RELOC_CRIS_32_PLT_PCREL)
  99
 100 /* Make sure we don't resolve fixups for which we want to emit dynamic
 101    relocations.  FIXME: Set fx_plt instead of using IS_CRIS_PIC_RELOC.  */
 102 #define TC_FORCE_RELOCATION_LOCAL(FIX)                  \
 103   (!(FIX)->fx_pcrel                                     \
 104    || (FIX)->fx_plt                                     \
 105    || IS_CRIS_PIC_RELOC ((FIX)->fx_r_type)              \
 106    || TC_FORCE_RELOCATION (FIX))
 107
 108 /* For some reloc types, don't adjust fixups by reducing to a section
 109    symbol.  */
 110 #define tc_fix_adjustable(FIX)                          \
 111  ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT          \
 112   && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY         \
 113   && (! IS_CRIS_PIC_RELOC ((FIX)->fx_r_type)            \
 114       || (FIX)->fx_r_type == BFD_RELOC_CRIS_32_GOTREL))
 115
 116 /* When we have fixups against constant expressions, we get a GAS-specific
 117    section symbol at no extra charge for obscure reasons in
 118    adjust_reloc_syms.  Since ELF outputs section symbols, it gladly
 119    outputs this "*ABS*" symbol in every object.  Avoid that.
 120    Also, don't emit undefined symbols (that aren't used in relocations).
 121    They pop up when tentatively parsing register names as symbols.  */
 122 #define tc_frob_symbol(symp, punt)                      \
 123  do {                                                   \
 124   if ((OUTPUT_FLAVOR == bfd_target_elf_flavour          \
 125        && (symp) == section_symbol (absolute_section))  \
 126       || ! S_IS_DEFINED (symp))                         \
 127     (punt) = 1;                                         \
 128  } while (0)
 129
 130 #define LISTING_HEADER "GAS for CRIS"
 131
 132 #if 0
 133 /* The testsuite does not let me define these, although they IMHO should
 134    be preferred over the default.  */
 135 #define LISTING_WORD_SIZE 2
 136 #define LISTING_LHS_WIDTH 4
 137 #define LISTING_LHS_WIDTH_SECOND 4
 138 #endif
 139
 140 /* END of declaration and definitions described in the "internals"
 141    document.  */
 142
 143 /* Do this, or we will never know what hit us when the
 144    broken-word-fixes break.  Do _not_ use WARN_SIGNED_OVERFLOW_WORD,
 145    it is only for use with WORKING_DOT_WORD and warns about most stuff.
 146    (still in 2.9.1).  */
 147 struct broken_word;
 148 extern void tc_cris_check_adjusted_broken_word PARAMS ((offsetT,
 149                                                         struct
 150                                                         broken_word *));
 151 #define TC_CHECK_ADJUSTED_BROKEN_DOT_WORD(new_offset, brokw) \
 152  tc_cris_check_adjusted_broken_word ((offsetT) (new_offset), brokw)
 153
 154 /* We don't want any implicit alignment, so we do nothing.  */
 155 #define TC_IMPLICIT_LCOMM_ALIGNMENT(SIZE, P2VAR)
 156
 157 /* CRIS instructions, with operands and prefixes included, are a multiple
 158    of two bytes long.  */
 159 #define DWARF2_LINE_MIN_INSN_LENGTH 2
 160
 161 /* Make port immune to unwanted difference in te-generic.h vs. te-linux.h.  */
 162 #define LOCAL_LABELS_DOLLAR 1
 163
 164 #endif /* TC_CRIS */
 165 /*
 166  * Local variables:
 167  * eval: (c-set-style "gnu")
 168  * indent-tabs-mode: t
 169  * End:
 170  */