1 /* This file is tc-m68k.h 2 Copyright 1987, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 3 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 4 Free Software Foundation, Inc. 5 6 This file is part of GAS, the GNU Assembler. 7 8 GAS is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2, or (at your option) 11 any later version. 12 13 GAS is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GAS; see the file COPYING. If not, write to the Free 20 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 21 02111-1307, USA. */ 22 23 #define TC_M68K 1 24 25 #ifdef ANSI_PROTOTYPES 26 struct fix; 27 #endif 28 29 #define TARGET_BYTES_BIG_ENDIAN 1 30 31 #ifdef OBJ_AOUT 32 #ifdef TE_SUN3 33 #define TARGET_FORMAT "a.out-sunos-big" 34 #endif 35 #ifdef TE_NetBSD 36 #define TARGET_FORMAT "a.out-m68k-netbsd" 37 #endif 38 #ifdef TE_LINUX 39 #define TARGET_FORMAT "a.out-m68k-linux" 40 #endif 41 #ifndef TARGET_FORMAT 42 #define TARGET_FORMAT "a.out-zero-big" 43 #endif 44 #endif 45 46 #ifdef OBJ_ELF 47 #define TARGET_FORMAT "elf32-m68k" 48 #endif 49 50 #ifdef TE_APOLLO 51 #define COFF_MAGIC APOLLOM68KMAGIC 52 #define COFF_AOUTHDR_MAGIC APOLLO_COFF_VERSION_NUMBER 53 #undef OBJ_COFF_OMIT_OPTIONAL_HEADER 54 #endif 55 56 #ifdef TE_LYNX 57 #define TARGET_FORMAT "coff-m68k-lynx" 58 #endif 59 #ifdef TE_AUX 60 #define TARGET_FORMAT "coff-m68k-aux" 61 #endif 62 #ifdef TE_DELTA 63 #define TARGET_FORMAT "coff-m68k-sysv" 64 #endif 65 66 #ifndef COFF_MAGIC 67 #define COFF_MAGIC MC68MAGIC 68 #endif 69 #define BFD_ARCH bfd_arch_m68k /* for non-BFD_ASSEMBLER */ 70 #define TARGET_ARCH bfd_arch_m68k /* BFD_ASSEMBLER */ 71 #define COFF_FLAGS F_AR32W 72 #define TC_COUNT_RELOC(x) ((x)->fx_addsy||(x)->fx_subsy) 73 74 #define TC_COFF_FIX2RTYPE(FIX) tc_coff_fix2rtype(FIX) 75 #define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag) 76 extern int tc_coff_sizemachdep PARAMS ((struct frag *)); 77 #ifdef TE_SUN3 78 /* This variable contains the value to write out at the beginning of 79 the a.out file. The 2<<16 means that this is a 68020 file instead 80 of an old-style 68000 file */ 81 82 #define DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE (2<<16|OMAGIC); /* Magic byte for file header */ 83 #endif /* TE_SUN3 */ 84 85 #ifndef AOUT_MACHTYPE 86 #define AOUT_MACHTYPE m68k_aout_machtype 87 extern int m68k_aout_machtype; 88 #endif 89 90 #define tc_comment_chars m68k_comment_chars 91 extern const char *m68k_comment_chars; 92 93 #define tc_crawl_symbol_chain(a) {;} /* not used */ 94 #define tc_headers_hook(a) {;} /* not used */ 95 #define tc_aout_pre_write_hook(x) {;} /* not used */ 96 97 #define LISTING_WORD_SIZE 2 /* A word is 2 bytes */ 98 #define LISTING_LHS_WIDTH 2 /* One word on the first line */ 99 #define LISTING_LHS_WIDTH_SECOND 2 /* One word on the second line */ 100 #define LISTING_LHS_CONT_LINES 4/* And 4 lines max */ 101 #define LISTING_HEADER "68K GAS " 102 103 #ifndef REGISTER_PREFIX 104 #define REGISTER_PREFIX '%' 105 #endif 106 107 #if !defined (REGISTER_PREFIX_OPTIONAL) 108 #if defined (M68KCOFF) || defined (OBJ_ELF) 109 #ifndef BFD_ASSEMBLER 110 #define LOCAL_LABEL(name) (name[0] == '.' \ 111 && (name[1] == 'L' || name[1] == '.')) 112 #endif /* ! BFD_ASSEMBLER */ 113 #define REGISTER_PREFIX_OPTIONAL 0 114 #else /* ! (COFF || ELF) */ 115 #define REGISTER_PREFIX_OPTIONAL 1 116 #endif /* ! (COFF || ELF) */ 117 #endif /* not def REGISTER_PREFIX and not def OPTIONAL_REGISTER_PREFIX */ 118 119 #ifdef TE_DELTA 120 /* On the Delta, `%' can occur within a label name, but not as the 121 initial character. */ 122 #define LEX_PCT LEX_NAME 123 /* On the Delta, `~' can start a label name, but is converted to '.'. */ 124 #define LEX_TILDE LEX_BEGIN_NAME 125 #define tc_canonicalize_symbol_name(s) ((*(s) == '~' ? *(s) = '.' : '.'), s) 126 /* On the Delta, dots are not required before pseudo-ops. */ 127 #define NO_PSEUDO_DOT 1 128 #ifndef BFD_ASSEMBLER 129 #undef LOCAL_LABEL 130 #define LOCAL_LABEL(name) \ 131 (name[0] == '.' || (name[0] == 'L' && name[1] == '%')) 132 #endif 133 #endif 134 135 extern void m68k_mri_mode_change PARAMS ((int)); 136 #define MRI_MODE_CHANGE(i) m68k_mri_mode_change (i) 137 138 extern int m68k_conditional_pseudoop PARAMS ((pseudo_typeS *)); 139 #define tc_conditional_pseudoop(pop) m68k_conditional_pseudoop (pop) 140 141 extern void m68k_frob_label PARAMS ((symbolS *)); 142 #define tc_frob_label(sym) m68k_frob_label (sym) 143 144 extern void m68k_flush_pending_output PARAMS ((void)); 145 #define md_flush_pending_output() m68k_flush_pending_output () 146 147 extern void m68k_frob_symbol PARAMS ((symbolS *)); 148 149 #ifdef BFD_ASSEMBLER 150 151 #define tc_frob_symbol(sym,punt) \ 152 do \ 153 { \ 154 if (S_GET_SEGMENT (sym) == reg_section) \ 155 punt = 1; \ 156 m68k_frob_symbol (sym); \ 157 } \ 158 while (0) 159 160 #define NO_RELOC BFD_RELOC_NONE 161 #define RELAX_RELOC_ABS8 BFD_RELOC_8 162 #define RELAX_RELOC_ABS16 BFD_RELOC_16 163 #define RELAX_RELOC_ABS32 BFD_RELOC_32 164 #define RELAX_RELOC_PC8 BFD_RELOC_8_PCREL 165 #define RELAX_RELOC_PC16 BFD_RELOC_16_PCREL 166 #define RELAX_RELOC_PC32 BFD_RELOC_32_PCREL 167 168 #ifdef OBJ_ELF 169 #define tc_fix_adjustable(X) tc_m68k_fix_adjustable(X) 170 extern int tc_m68k_fix_adjustable PARAMS ((struct fix *)); 171 172 /* Target *-*-elf implies an embedded target. No shared libs. 173 *-*-uclinux also requires special casing to prevent GAS from 174 generating unsupported R_68K_PC16 relocs. */ 175 #define EXTERN_FORCE_RELOC \ 176 ((strcmp (TARGET_OS, "elf") != 0) && (strcmp (TARGET_OS, "uclinux") != 0)) 177 178 /* Values passed to md_apply_fix3 don't include symbol values. */ 179 #define MD_APPLY_SYM_VALUE(FIX) 0 180 181 #define elf_tc_final_processing m68k_elf_final_processing 182 extern void m68k_elf_final_processing PARAMS ((void)); 183 #endif 184 185 #else /* ! BFD_ASSEMBLER */ 186 187 #define tc_frob_coff_symbol(sym) m68k_frob_symbol (sym) 188 189 #define NO_RELOC 0 190 #define RELAX_RELOC_ABS8 0 191 #define RELAX_RELOC_ABS16 0 192 #define RELAX_RELOC_ABS32 0 193 #define RELAX_RELOC_PC8 0 194 #define RELAX_RELOC_PC16 0 195 #define RELAX_RELOC_PC32 0 196 197 #endif /* ! BFD_ASSEMBLER */ 198 199 #define DIFF_EXPR_OK 200 201 extern void m68k_init_after_args PARAMS ((void)); 202 #define tc_init_after_args m68k_init_after_args 203 204 extern int m68k_parse_long_option PARAMS ((char *)); 205 #define md_parse_long_option m68k_parse_long_option 206 207 #define md_operand(x) 208 209 #define TARGET_ARCH bfd_arch_m68k 210 211 extern struct relax_type md_relax_table[]; 212 #define TC_GENERIC_RELAX_TABLE md_relax_table 213 214 /* We can't do a byte jump to the next instruction, so in that case 215 force word mode by faking AIM. */ 216 #define md_prepare_relax_scan(fragP, address, aim, this_state, this_type) \ 217 do \ 218 { \ 219 if (aim == 0 && this_type->rlx_forward == 127) \ 220 aim = 128; \ 221 } \ 222 while (0) 223 224 #define DWARF2_LINE_MIN_INSN_LENGTH 2 225 226 /* We want .cfi_* pseudo-ops for generating unwind info. */ 227 #define TARGET_USE_CFIPOP 1 228 229 #define DWARF2_DEFAULT_RETURN_COLUMN 24 230 #define DWARF2_CIE_DATA_ALIGNMENT (-4) 231 232 #define tc_regname_to_dw2regnum tc_m68k_regname_to_dw2regnum 233 extern int tc_m68k_regname_to_dw2regnum (const char *regname); 234 235 #define tc_cfi_frame_initial_instructions tc_m68k_frame_initial_instructions 236 extern void tc_m68k_frame_initial_instructions (void); 237 238 /* (TIGCC 20030716) Allow difference of undefined symbols. -- Kevin Kofler */ 239 #define UNDEFINED_DIFFERENCE_OK 240 241 /* (TIGCC 20030716) Force relocs in all-relocs mode. -- Kevin Kofler */ 242 #define TC_FORCE_RELOCATION(FIX) \ 243 (generic_force_reloc (FIX)) 244 #define TC_FORCE_RELOCATION_ABS(FIX) \ 245 (0) 246 #define TC_FORCE_RELOCATION_LOCAL(FIX) \ 247 (TC_FORCE_RELOCATION (FIX)) 248 #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \ 249 (! SEG_NORMAL (SEG) || TC_FORCE_RELOCATION (FIX)) 250 #define TC_FORCE_RELOCATION_SUB_LOCAL(FIX) \ 251 (TC_FORCE_RELOCATION (FIX)) 252 /* (END TIGCC 20030716) */ 253 254