1 /* m88k.h -- Assembler for the Motorola 88000 2 Contributed by Devon Bowen of Buffalo University 3 and Torbjorn Granlund of the Swedish Institute of Computer Science. 4 Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 2000, 5 2002 Free Software Foundation, Inc. 6 7 This file is part of GAS, the GNU Assembler. 8 9 GAS is free software; you can redistribute it and/or modify 10 it under the terms of the GNU General Public License as published by 11 the Free Software Foundation; either version 2, or (at your option) 12 any later version. 13 14 GAS is distributed in the hope that it will be useful, 15 but WITHOUT ANY WARRANTY; without even the implied warranty of 16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 17 GNU General Public License for more details. 18 19 You should have received a copy of the GNU General Public License 20 along with GAS; see the file COPYING. If not, write to the Free 21 Software Foundation, 59 Temple Place - Suite 330, Boston, MA 22 02111-1307, USA. */ 23 24 #define TC_M88K 25 26 #define TARGET_BYTES_BIG_ENDIAN 1 27 #undef REGISTER_PREFIX 28 29 #ifdef OBJ_AOUT 30 #ifdef TE_OpenBSD 31 #define TARGET_FORMAT "a.out-m88k-openbsd" 32 #endif 33 #endif 34 35 #ifdef M88KCOFF 36 #define BFD_ARCH bfd_arch_m88k 37 #define COFF_MAGIC MC88OMAGIC 38 #define COFF_FLAGS F_AR32W 39 #endif 40 41 #ifdef OBJ_ELF 42 #define BFD_ARCH bfd_arch_m88k 43 #define TARGET_ARCH bfd_arch_m88k 44 #define TARGET_FORMAT "elf32-m88k" 45 #if defined(TE_OpenBSD) 46 #define REGISTER_PREFIX '%' 47 #else 48 #define REGISTER_PREFIX '#' 49 #endif 50 #endif 51 52 #define CUSTOM_RELOC_FORMAT 53 54 /* different type of relocation available in the m88k */ 55 56 #include "bfd.h" 57 #define m88k_reloc_type bfd_reloc_code_real 58 59 #ifdef OBJ_ELF 60 61 /* This is used to recognize #abdiff, #got_rel and #plt symbols. 62 The relocation type is stored in X_md. */ 63 extern int m88k_parse_name (const char *, expressionS *, char *); 64 #define md_parse_name(s, e, m, c) m88k_parse_name (s, e, c) 65 66 /* This expression evaluates to true if the relocation is for a local 67 object for which we still want to do the relocation at runtime. 68 False if we are willing to perform this relocation while building 69 the .o file. Only concerns pcrel relocs. */ 70 71 #define TC_FORCE_RELOCATION_LOCAL(FIX) \ 72 (!(FIX)->fx_pcrel \ 73 || (FIX)->fx_plt \ 74 || (FIX)->fx_r_type == BFD_RELOC_32_PLT_PCREL \ 75 || TC_FORCE_RELOCATION (FIX)) 76 77 /* Keep relocations relative to the GOT, or non-PC relative. */ 78 #define tc_fix_adjustable(FIX) m88k_fix_adjustable (FIX) 79 extern int m88k_fix_adjustable (struct fix *); 80 81 #endif /* OBJ_ELF */ 82 83 #ifndef OBJ_ELF 84 /* The m88k uses '@' to start local labels, except on ELF. */ 85 #define LEX_AT (LEX_BEGIN_NAME | LEX_NAME) 86 #endif /* OBJ_ELF */ 87 88 #if !defined(OBJ_ELF) || !defined(TE_OpenBSD) 89 /* The m88k uses pseudo-ops with no leading period, except on OpenBSD ELF. */ 90 #define NO_PSEUDO_DOT 1 91 #endif 92 93 /* Don't warn on word overflow; it happens on %hi relocs. */ 94 #undef WARN_SIGNED_OVERFLOW_WORD 95 96 #define md_convert_frag(b,s,f) {as_fatal (_("m88k convert_frag\n"));} 97 98 /* We don't need to do anything special for undefined symbols. */ 99 #define md_undefined_symbol(s) 0 100 101 /* We have no special operand handling. */ 102 #define md_operand(e) 103 104 #define tc_aout_pre_write_hook(x) do { } while (0) 105 #define tc_crawl_symbol_chain(a) do { } while (0) 106 107 #ifdef M88KCOFF 108 109 /* Whether a reloc should be output. */ 110 #define TC_COUNT_RELOC(fixp) ((fixp)->fx_addsy != NULL) 111 112 /* Get the BFD reloc type to use for a gas fixS structure. */ 113 #define TC_COFF_FIX2RTYPE(fixp) tc_coff_fix2rtype (fixp) 114 115 /* No special hook needed for symbols. */ 116 #define tc_coff_symbol_emit_hook(s) 117 118 /* Align sections to a four byte boundary. */ 119 #ifndef max 120 #define max(a,b) (((a) > (b)) ? (a) : (b)) 121 #endif 122 #define SUB_SEGMENT_ALIGN(SEG, FRCHAIN) max (section_alignment[(int) (SEG)], 4) 123 124 #endif /* M88KCOFF */ 125 126 /* Fill in rs_align_code fragments. */ 127 extern void m88k_handle_align (fragS *); 128 #define HANDLE_ALIGN(frag) m88k_handle_align (frag) 129 130 #define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4) 131 132 #define elf_tc_final_processing m88k_elf_final_processing 133 extern void m88k_elf_final_processing (void); 134 135 /* word pseudo outputs 32-bit values, no risk of ``broken words'' */ 136 #define WORKING_DOT_WORD 137