1 /* This file is tc-m68k.h
3 Copyright (C) 1987, 89, 90, 91, 92, 93, 94, 95, 96, 1997
4 Free Software Foundation, Inc.
6 This file is part of GAS, the GNU Assembler.
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)
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.
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
20 the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
24 #define TARGET_BYTES_BIG_ENDIAN 1
28 #define TARGET_FORMAT "a.out-sunos-big"
31 #define TARGET_FORMAT "a.out-m68k-netbsd"
34 #define TARGET_FORMAT "a.out-m68k-linux"
37 #define TARGET_FORMAT "a.out-zero-big"
42 #define TARGET_FORMAT "elf32-m68k"
46 #define COFF_MAGIC APOLLOM68KMAGIC
47 #define COFF_AOUTHDR_MAGIC APOLLO_COFF_VERSION_NUMBER
48 #undef OBJ_COFF_OMIT_OPTIONAL_HEADER
52 #define TARGET_FORMAT "coff-m68k-lynx"
55 #define TARGET_FORMAT "coff-m68k-aux"
59 #define COFF_MAGIC MC68MAGIC
61 #define BFD_ARCH bfd_arch_m68k /* for non-BFD_ASSEMBLER */
62 #define TARGET_ARCH bfd_arch_m68k /* BFD_ASSEMBLER */
63 #define COFF_FLAGS F_AR32W
64 #define TC_COUNT_RELOC(x) ((x)->fx_addsy||(x)->fx_subsy)
66 #define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype(fixP)
67 #define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep(frag)
68 extern int tc_coff_sizemachdep PARAMS ((struct frag *));
70 /* This variable contains the value to write out at the beginning of
71 the a.out file. The 2<<16 means that this is a 68020 file instead
72 of an old-style 68000 file */
74 #define DEFAULT_MAGIC_NUMBER_FOR_OBJECT_FILE (2<<16|OMAGIC); /* Magic byte for file header */
78 #define AOUT_MACHTYPE m68k_aout_machtype
79 extern int m68k_aout_machtype;
82 #define tc_comment_chars m68k_comment_chars
83 extern const char *m68k_comment_chars;
85 #define tc_crawl_symbol_chain(a) {;} /* not used */
86 #define tc_headers_hook(a) {;} /* not used */
87 #define tc_aout_pre_write_hook(x) {;} /* not used */
89 #define LISTING_WORD_SIZE 2 /* A word is 2 bytes */
90 #define LISTING_LHS_WIDTH 2 /* One word on the first line */
91 #define LISTING_LHS_WIDTH_SECOND 2 /* One word on the second line */
92 #define LISTING_LHS_CONT_LINES 4/* And 4 lines max */
93 #define LISTING_HEADER "68K GAS "
95 #ifndef REGISTER_PREFIX
96 #define REGISTER_PREFIX '%'
99 #if !defined (REGISTER_PREFIX_OPTIONAL)
100 #if defined (M68KCOFF) || defined (OBJ_ELF)
101 #define LOCAL_LABEL(name) (name[0] == '.' \
102 && (name[1] == 'L' || name[1] == '.'))
103 #define FAKE_LABEL_NAME ".L0\001"
104 #define REGISTER_PREFIX_OPTIONAL 0
106 #define REGISTER_PREFIX_OPTIONAL 1
108 #endif /* not def REGISTER_PREFIX and not def OPTIONAL_REGISTER_PREFIX */
111 /* On the Delta, `%' can occur within a label name. I'm assuming it
112 can't be used as the initial character. If that's not true, more
113 work will be needed to fix this up. */
115 /* On the Delta, dots are not required before pseudo-ops. */
116 #define NO_PSEUDO_DOT
119 extern void m68k_mri_mode_change PARAMS ((int));
120 #define MRI_MODE_CHANGE(i) m68k_mri_mode_change (i)
122 extern int m68k_conditional_pseudoop PARAMS ((pseudo_typeS *));
123 #define tc_conditional_pseudoop(pop) m68k_conditional_pseudoop (pop)
127 #define tc_frob_symbol(sym,punt) \
130 if (S_GET_SEGMENT (sym) == reg_section) \
132 if (S_GET_SEGMENT (sym) == text_section \
133 && (S_GET_VALUE (sym) & 1) != 0) \
134 as_warn ("text label `%s' aligned to odd boundary", \
139 #define NO_RELOC BFD_RELOC_NONE
143 /* This expression evaluates to false if the relocation is for a local object
144 for which we still want to do the relocation at runtime. True if we
145 are willing to perform this relocation while building the .o file. */
147 #define TC_RELOC_RTSYM_LOC_FIXUP(FIX) \
148 ((FIX)->fx_r_type != BFD_RELOC_8_PLT_PCREL \
149 && (FIX)->fx_r_type != BFD_RELOC_16_PLT_PCREL \
150 && (FIX)->fx_r_type != BFD_RELOC_32_PLT_PCREL \
151 && (FIX)->fx_r_type != BFD_RELOC_8_GOT_PCREL \
152 && (FIX)->fx_r_type != BFD_RELOC_16_GOT_PCREL \
153 && (FIX)->fx_r_type != BFD_RELOC_32_GOT_PCREL)
155 #define tc_fix_adjustable(X) tc_m68k_fix_adjustable(X)
158 #else /* ! BFD_ASSEMBLER */
160 #define tc_frob_coff_symbol(sym) \
163 if (S_GET_SEGMENT (sym) == text_section \
164 && (S_GET_VALUE (sym) & 1) != 0) \
165 as_warn ("text label `%s' aligned to odd boundary", \
172 #endif /* ! BFD_ASSEMBLER */
176 extern void m68k_init_after_args PARAMS ((void));
177 #define tc_init_after_args m68k_init_after_args
179 extern int m68k_parse_long_option PARAMS ((char *));
180 #define md_parse_long_option m68k_parse_long_option
182 #define md_operand(x)
184 #define TARGET_WORD_SIZE 32
185 #define TARGET_ARCH bfd_arch_m68k
187 extern struct relax_type md_relax_table[];
188 #define TC_GENERIC_RELAX_TABLE md_relax_table
190 /* Copied from write.c */
191 /* This was formerly called M68K_AIM_KLUDGE. */
192 #define md_prepare_relax_scan(fragP, address, aim, this_state, this_type) \
193 if (aim==0 && this_state== 4) { /* hard encoded from tc-m68k.c */ \
194 aim=this_type->rlx_forward+1; /* Force relaxation into word mode */ \
197 /* end of tc-m68k.h */