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 */ 171