gas/config/tc-cris.h

   1 /* tc-cris.h -- Header file for tc-cris.c, the CRIS GAS port.
   2    Copyright 2000, 2001, 2002, 2003, 2004, 2005
   3    Free Software Foundation, Inc.
   4
   5    Contributed by Axis Communications AB, Lund, Sweden.
   6    Originally written for GAS 1.38.1 by Mikael Asker.
   7    Updates, BFDizing, GNUifying and ELF by Hans-Peter Nilsson.
   8
   9    This file is part of GAS, the GNU Assembler.
  10
  11    GAS is free software; you can redistribute it and/or modify
  12    it under the terms of the GNU General Public License as published by
  13    the Free Software Foundation; either version 2, or (at your option)
  14    any later version.
  15
  16    GAS is distributed in the hope that it will be useful,
  17    but WITHOUT ANY WARRANTY; without even the implied warranty of
  18    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19    GNU General Public License for more details.
  20
  21    You should have received a copy of the GNU General Public License
  22    along with GAS; see the file COPYING.  If not, write to the
  23    Free Software Foundation, 51 Franklin Street - Fifth Floor, Boston,
  24    MA 02110-1301, USA.  */
  25
  26 /* See the GAS "internal" document for general documentation on this.
  27    It is called internals.texi (internals.info when makeinfo:d), but is
  28    not installed or makeinfo:d by "make info".  */
  29
  30 /* Functions and variables that aren't declared in tc.h are declared here,
  31    with the type/prototype that is used in the local extern-declaration of
  32    their usage.  */
  33
  34 #ifndef TC_CRIS
  35 #define TC_CRIS
  36
  37 /* Multi-target support is always on.  */
  38 extern const char *cris_target_format (void);
  39 #define TARGET_FORMAT cris_target_format ()
  40
  41 #define TARGET_ARCH bfd_arch_cris
  42
  43 extern unsigned int cris_mach (void);
  44 #define TARGET_MACH (cris_mach ())
  45
  46 #define TARGET_BYTES_BIG_ENDIAN 0
  47
  48 extern const char *md_shortopts;
  49 extern struct option md_longopts[];
  50 extern size_t md_longopts_size;
  51
  52 extern const pseudo_typeS md_pseudo_table[];
  53
  54 #define tc_comment_chars cris_comment_chars
  55 extern const char cris_comment_chars[];
  56 extern const char line_comment_chars[];
  57 extern const char line_separator_chars[];
  58 extern const char EXP_CHARS[];
  59 extern const char FLT_CHARS[];
  60
  61 /* This should be optional, since it is ignored as an escape (assumed to
  62    be itself) if it is not recognized.  */
  63 #define ONLY_STANDARD_ESCAPES
  64
  65 /* Note that we do not define TC_EQUAL_IN_INSN, since its current use is
  66    in the instruction rather than the operand, and thus does not come to
  67    use for side-effect assignments such as "and.d [r0 = r1 + 42], r3".  */
  68 #define md_operand(x)
  69
  70 #define md_number_to_chars number_to_chars_littleendian
  71
  72 /* There's no use having different functions for this; the sizes are the
  73    same.  Note that we can't #define md_short_jump_size here.  */
  74 #define md_create_short_jump md_create_long_jump
  75
  76 extern const struct relax_type md_cris_relax_table[];
  77 #define TC_GENERIC_RELAX_TABLE md_cris_relax_table
  78
  79 long cris_relax_frag (segT, fragS *, long);
  80
  81 /* GAS only handles relaxations for pc-relative data targeting addresses
  82    in the same segment, so we have to handle the rest on our own.  */
  83 #define md_relax_frag(SEG, FRAGP, STRETCH)              \
  84  ((FRAGP)->fr_symbol != NULL                            \
  85   && S_GET_SEGMENT ((FRAGP)->fr_symbol) == (SEG)        \
  86   ? relax_frag (SEG, FRAGP, STRETCH)                    \
  87   : cris_relax_frag (SEG, FRAGP, STRETCH))
  88
  89 #define TC_FORCE_RELOCATION(FIX) md_cris_force_relocation (FIX)
  90 extern int md_cris_force_relocation (struct fix *);
  91
  92 #define IS_CRIS_PIC_RELOC(RTYPE)                        \
  93   ((RTYPE) == BFD_RELOC_CRIS_16_GOT                     \
  94    || (RTYPE) == BFD_RELOC_CRIS_32_GOT                  \
  95    || (RTYPE) == BFD_RELOC_CRIS_16_GOTPLT               \
  96    || (RTYPE) == BFD_RELOC_CRIS_32_GOTPLT               \
  97    || (RTYPE) == BFD_RELOC_CRIS_32_GOTREL               \
  98    || (RTYPE) == BFD_RELOC_CRIS_32_PLT_GOTREL           \
  99    || (RTYPE) == BFD_RELOC_CRIS_32_PLT_PCREL)
 100
 101 /* Make sure we don't resolve fixups for which we want to emit dynamic
 102    relocations.  FIXME: Set fx_plt instead of using IS_CRIS_PIC_RELOC.  */
 103 #define TC_FORCE_RELOCATION_LOCAL(FIX)                  \
 104   (!(FIX)->fx_pcrel                                     \
 105    || (FIX)->fx_plt                                     \
 106    || IS_CRIS_PIC_RELOC ((FIX)->fx_r_type)              \
 107    || TC_FORCE_RELOCATION (FIX))
 108
 109 /* For some reloc types, don't adjust fixups by reducing to a section
 110    symbol.  */
 111 #define tc_fix_adjustable(FIX)                          \
 112  ((FIX)->fx_r_type != BFD_RELOC_VTABLE_INHERIT          \
 113   && (FIX)->fx_r_type != BFD_RELOC_VTABLE_ENTRY         \
 114   && (! IS_CRIS_PIC_RELOC ((FIX)->fx_r_type)            \
 115       || (FIX)->fx_r_type == BFD_RELOC_CRIS_32_GOTREL))
 116
 117 /* When we have fixups against constant expressions, we get a GAS-specific
 118    section symbol at no extra charge for obscure reasons in
 119    adjust_reloc_syms.  Since ELF outputs section symbols, it gladly
 120    outputs this "*ABS*" symbol in every object.  Avoid that.
 121    Also, don't emit undefined symbols (that aren't used in relocations).
 122    They pop up when tentatively parsing register names as symbols.  */
 123 #define tc_frob_symbol(symp, punt)                      \
 124  do {                                                   \
 125   if ((OUTPUT_FLAVOR == bfd_target_elf_flavour          \
 126        && (symp) == section_symbol (absolute_section))  \
 127       || ! S_IS_DEFINED (symp))                         \
 128     (punt) = 1;                                         \
 129  } while (0)
 130
 131 #define LISTING_HEADER "GAS for CRIS"
 132
 133 #if 0
 134 /* The testsuite does not let me define these, although they IMHO should
 135    be preferred over the default.  */
 136 #define LISTING_WORD_SIZE 2
 137 #define LISTING_LHS_WIDTH 4
 138 #define LISTING_LHS_WIDTH_SECOND 4
 139 #endif
 140
 141 /* END of declaration and definitions described in the "internals"
 142    document.  */
 143
 144 /* Do this, or we will never know what hit us when the
 145    broken-word-fixes break.  Do _not_ use WARN_SIGNED_OVERFLOW_WORD,
 146    it is only for use with WORKING_DOT_WORD and warns about most stuff.
 147    (still in 2.9.1).  */
 148 struct broken_word;
 149 extern void tc_cris_check_adjusted_broken_word (offsetT,
 150                                                 struct 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) do { } while (0)
 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  */