| 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 | 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 | |
| 28 | #ifdef M88KCOFF |
| 29 | #define COFF_MAGIC MC88OMAGIC |
| 30 | #define BFD_ARCH bfd_arch_m88k |
| 31 | #define COFF_FLAGS F_AR32W |
| 32 | #endif |
| 33 | |
| 34 | #define NEED_FX_R_TYPE |
| 35 | #define TC_KEEP_FX_OFFSET |
| 36 | #define TC_CONS_RELOC RELOC_32 |
| 37 | |
| 38 | /* different type of relocation available in the m88k */ |
| 39 | |
| 40 | enum reloc_type |
| 41 | { |
| 42 | RELOC_LO16, /* lo16(sym) */ |
| 43 | RELOC_HI16, /* hi16(sym) */ |
| 44 | RELOC_PC16, /* bb0, bb1, bcnd */ |
| 45 | RELOC_PC26, /* br, bsr */ |
| 46 | RELOC_32, /* jump tables, etc */ |
| 47 | RELOC_IW16, /* global access through linker regs 28 */ |
| 48 | NO_RELOC |
| 49 | }; |
| 50 | |
| 51 | struct reloc_info_m88k |
| 52 | { |
| 53 | unsigned long int r_address; |
| 54 | unsigned int r_symbolnum:24; |
| 55 | unsigned int r_extern:1; |
| 56 | unsigned int r_pad:3; |
| 57 | enum reloc_type r_type:4; |
| 58 | long int r_addend; |
| 59 | }; |
| 60 | |
| 61 | #define relocation_info reloc_info_m88k |
| 62 | |
| 63 | /* The m88k uses '@' to start local labels. */ |
| 64 | #define LEX_AT (LEX_BEGIN_NAME | LEX_NAME) |
| 65 | |
| 66 | #ifndef BFD_ASSEMBLER |
| 67 | #define LOCAL_LABEL(name) \ |
| 68 | ((name[0] =='@' && (name [1] == 'L' || name [1] == '.')) \ |
| 69 | || (name[0] == 'L' && name[1] == '0' && name[2] == '\001')) |
| 70 | #endif |
| 71 | |
| 72 | /* The m88k uses pseudo-ops with no leading period. */ |
| 73 | #define NO_PSEUDO_DOT 1 |
| 74 | |
| 75 | /* Don't warn on word overflow; it happens on %hi relocs. */ |
| 76 | #undef WARN_SIGNED_OVERFLOW_WORD |
| 77 | |
| 78 | #define md_convert_frag(b,s,f) {as_fatal (_("m88k convert_frag\n"));} |
| 79 | |
| 80 | /* We don't need to do anything special for undefined symbols. */ |
| 81 | #define md_undefined_symbol(s) 0 |
| 82 | |
| 83 | /* We have no special operand handling. */ |
| 84 | #define md_operand(e) |
| 85 | |
| 86 | #ifdef M88KCOFF |
| 87 | |
| 88 | /* Whether a reloc should be output. */ |
| 89 | #define TC_COUNT_RELOC(fixp) ((fixp)->fx_addsy != NULL) |
| 90 | |
| 91 | /* Get the BFD reloc type to use for a gas fixS structure. */ |
| 92 | #define TC_COFF_FIX2RTYPE(fixp) tc_coff_fix2rtype (fixp) |
| 93 | |
| 94 | /* No special hook needed for symbols. */ |
| 95 | #define tc_coff_symbol_emit_hook(s) |
| 96 | |
| 97 | /* Align sections to a four byte boundary. */ |
| 98 | #ifndef max |
| 99 | #define max(a,b) (((a) > (b)) ? (a) : (b)) |
| 100 | #endif |
| 101 | #define SUB_SEGMENT_ALIGN(SEG) max (section_alignment[(int) (SEG)], 4) |
| 102 | |
| 103 | /* Fill in rs_align_code fragments. */ |
| 104 | extern void m88k_handle_align PARAMS ((fragS *)); |
| 105 | #define HANDLE_ALIGN(frag) m88k_handle_align (frag) |
| 106 | |
| 107 | #define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4) |
| 108 | |
| 109 | #endif /* M88KCOFF */ |