1 /* This file is tc-m68k.h 2 Copyright (C) 1987-2024 Free Software Foundation, Inc. 3 4 This file is part of GAS, the GNU Assembler. 5 6 GAS is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 3, or (at your option) 9 any later version. 10 11 GAS is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GAS; see the file COPYING. If not, write to the Free 18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 19 02110-1301, USA. */ 20 21 #ifndef TC_M68K_H 22 #define TC_M68K_H 23 24 #define TC_M68K 1 25 26 struct fix; 27 28 #define TARGET_BYTES_BIG_ENDIAN 1 29 30 #define TARGET_FORMAT "elf32-m68k" 31 #define TARGET_ARCH bfd_arch_m68k 32 33 #define tc_comment_chars m68k_comment_chars 34 extern const char *m68k_comment_chars; 35 36 #define LISTING_WORD_SIZE 2 /* A word is 2 bytes */ 37 #define LISTING_LHS_WIDTH 2 /* One word on the first line */ 38 #define LISTING_LHS_WIDTH_SECOND 2 /* One word on the second line */ 39 #define LISTING_LHS_CONT_LINES 4/* And 4 lines max */ 40 #define LISTING_HEADER "68K GAS " 41 42 #ifndef REGISTER_PREFIX 43 #define REGISTER_PREFIX '%' 44 #endif 45 46 #ifndef REGISTER_PREFIX_OPTIONAL 47 #define REGISTER_PREFIX_OPTIONAL 0 48 #endif 49 50 extern void m68k_mri_mode_change (int); 51 #define MRI_MODE_CHANGE(i) m68k_mri_mode_change (i) 52 53 extern int m68k_conditional_pseudoop (const pseudo_typeS *); 54 #define tc_conditional_pseudoop(pop) m68k_conditional_pseudoop (pop) 55 56 extern void m68k_frob_label (symbolS *); 57 #define tc_frob_label(sym) m68k_frob_label (sym) 58 59 extern void m68k_flush_pending_output (void); 60 #define md_flush_pending_output() m68k_flush_pending_output () 61 62 extern void m68k_frob_symbol (symbolS *); 63 64 #define tc_frob_symbol(sym,punt) \ 65 do \ 66 { \ 67 if (S_GET_SEGMENT (sym) == reg_section) \ 68 punt = 1; \ 69 m68k_frob_symbol (sym); \ 70 } \ 71 while (0) 72 73 #define NO_RELOC BFD_RELOC_NONE 74 #define RELAX_RELOC_ABS8 BFD_RELOC_8 75 #define RELAX_RELOC_ABS16 BFD_RELOC_16 76 #define RELAX_RELOC_ABS32 BFD_RELOC_32 77 #define RELAX_RELOC_PC8 BFD_RELOC_8_PCREL 78 #define RELAX_RELOC_PC16 BFD_RELOC_16_PCREL 79 #define RELAX_RELOC_PC32 BFD_RELOC_32_PCREL 80 81 #define tc_fix_adjustable(X) tc_m68k_fix_adjustable(X) 82 extern int tc_m68k_fix_adjustable (struct fix *); 83 84 /* Target *-*-elf implies an embedded target. No shared libs. 85 *-*-uclinux also requires special casing to prevent GAS from 86 generating unsupported R_68K_PC16 relocs. */ 87 #define EXTERN_FORCE_RELOC \ 88 ((strcmp (TARGET_OS, "elf") != 0) && (strcmp (TARGET_OS, "uclinux") != 0)) 89 90 /* Values passed to md_apply_fix don't include symbol values. */ 91 #define MD_APPLY_SYM_VALUE(FIX) 0 92 93 #define elf_tc_final_processing m68k_elf_final_processing 94 extern void m68k_elf_final_processing (void); 95 96 #define DIFF_EXPR_OK 97 98 extern int m68k_parse_long_option (char *); 99 #define md_parse_long_option m68k_parse_long_option 100 101 #define md_operand(x) 102 103 extern struct relax_type md_relax_table[]; 104 #define TC_GENERIC_RELAX_TABLE md_relax_table 105 106 /* We can't do a byte jump to the next instruction, so in that case 107 force word mode by faking AIM. */ 108 #define md_prepare_relax_scan(fragP, address, aim, this_state, this_type) \ 109 do \ 110 { \ 111 if (aim == 0 && this_type->rlx_forward == 127) \ 112 aim = 128; \ 113 } \ 114 while (0) 115 116 #define DWARF2_LINE_MIN_INSN_LENGTH 2 117 118 /* We want .cfi_* pseudo-ops for generating unwind info. */ 119 #define TARGET_USE_CFIPOP 1 120 121 #define DWARF2_DEFAULT_RETURN_COLUMN 24 122 #define DWARF2_CIE_DATA_ALIGNMENT (-4) 123 124 #define tc_regname_to_dw2regnum tc_m68k_regname_to_dw2regnum 125 extern int tc_m68k_regname_to_dw2regnum (const char *regname); 126 127 #define tc_cfi_frame_initial_instructions tc_m68k_frame_initial_instructions 128 extern void tc_m68k_frame_initial_instructions (void); 129 130 #ifdef TE_UCLINUX 131 /* elf2flt does not honor PT_LOAD's from the executable. 132 .text and .eh_frame sections will not end up in the same segment and so 133 we cannot use PC-relative encoding for CFI. */ 134 # define CFI_DIFF_EXPR_OK 0 135 136 /* However, follow compiler's guidance when it specifies encoding for LSDA. */ 137 # define CFI_DIFF_LSDA_OK 1 138 #endif 139 140 struct broken_word; 141 #define TC_CHECK_ADJUSTED_BROKEN_DOT_WORD(new_offset, brokw) \ 142 tc_m68k_check_adjusted_broken_word ((offsetT) (new_offset), (brokw)) 143 extern void tc_m68k_check_adjusted_broken_word (offsetT, 144 struct broken_word *); 145 146 /* We want to warn if any text labels are misaligned. In order to get 147 the right line number, we need to record the line number for each 148 label. */ 149 struct m68k_tc_sy 150 { 151 const char *file; 152 unsigned int line; 153 int text; 154 }; 155 156 #define TC_SYMFIELD_TYPE struct m68k_tc_sy 157 158 #endif /* TC_M68K_H */ 159