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90d85bc4 RP |
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. | |
71dd3c40 ILT |
4 | Copyright (C) 1989, 90, 91, 92, 93, 94, 95, 1996 |
5 | Free Software Foundation, Inc. | |
90d85bc4 RP |
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 1, 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 | |
a2a5a4fa | 21 | the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
90d85bc4 | 22 | |
c978e704 ILT |
23 | #define TC_M88K |
24 | ||
a920b693 ILT |
25 | #define TARGET_BYTES_BIG_ENDIAN 1 |
26 | ||
c978e704 ILT |
27 | #ifdef M88KCOFF |
28 | #define COFF_MAGIC MC88OMAGIC | |
29 | #define BFD_ARCH bfd_arch_m88k | |
30 | #define COFF_FLAGS F_AR32W | |
31 | #endif | |
32 | ||
332fc09f | 33 | #define NEED_FX_R_TYPE |
d58bbca1 | 34 | #define TC_KEEP_FX_OFFSET |
78805240 | 35 | #define TC_CONS_RELOC RELOC_32 |
332fc09f | 36 | |
90d85bc4 RP |
37 | /* different type of relocation available in the m88k */ |
38 | ||
39 | enum reloc_type | |
40 | { | |
41 | RELOC_LO16, /* lo16(sym) */ | |
42 | RELOC_HI16, /* hi16(sym) */ | |
43 | RELOC_PC16, /* bb0, bb1, bcnd */ | |
44 | RELOC_PC26, /* br, bsr */ | |
45 | RELOC_32, /* jump tables, etc */ | |
46 | RELOC_IW16, /* global access through linker regs 28 */ | |
47 | NO_RELOC | |
48 | }; | |
49 | ||
50 | struct reloc_info_m88k | |
51 | { | |
355afbcd KR |
52 | unsigned long int r_address; |
53 | unsigned int r_symbolnum:24; | |
54 | unsigned int r_extern:1; | |
55 | unsigned int r_pad:3; | |
56 | enum reloc_type r_type:4; | |
57 | long int r_addend; | |
90d85bc4 RP |
58 | }; |
59 | ||
60 | #define relocation_info reloc_info_m88k | |
61 | ||
c978e704 ILT |
62 | /* The m88k uses '@' to start local labels. */ |
63 | #define LEX_AT (LEX_BEGIN_NAME | LEX_NAME) | |
64 | #define LOCAL_LABEL(name) \ | |
65 | ((name[0] =='@' && (name [1] == 'L' || name [1] == '.')) \ | |
66 | || (name[0] == 'L' && name[1] == '0' && name[2] == '\001')) | |
332fc09f | 67 | |
8ff6f40e ILT |
68 | /* The m88k uses pseudo-ops with no leading period. */ |
69 | #define NO_PSEUDO_DOT | |
70 | ||
71 | /* Don't warn on word overflow; it happens on %hi relocs. */ | |
72 | #undef WARN_SIGNED_OVERFLOW_WORD | |
73 | ||
332fc09f | 74 | #define md_convert_frag(b,s,f) {as_fatal ("m88k convert_frag\n");} |
c978e704 ILT |
75 | |
76 | /* We don't need to do anything special for undefined symbols. */ | |
77 | #define md_undefined_symbol(s) 0 | |
78 | ||
79 | /* We have no special operand handling. */ | |
80 | #define md_operand(e) | |
81 | ||
82 | #ifdef M88KCOFF | |
83 | ||
84 | /* Whether a reloc should be output. */ | |
85 | #define TC_COUNT_RELOC(fixp) ((fixp)->fx_addsy != NULL) | |
86 | ||
87 | /* Get the BFD reloc type to use for a gas fixS structure. */ | |
88 | #define TC_COFF_FIX2RTYPE(fixp) tc_coff_fix2rtype (fixp) | |
89 | ||
90 | /* No special hook needed for symbols. */ | |
91 | #define tc_coff_symbol_emit_hook(s) | |
92 | ||
a75f31ce ILT |
93 | /* Align sections to a four byte boundary. */ |
94 | #ifndef max | |
95 | #define max(a,b) (((a) > (b)) ? (a) : (b)) | |
96 | #endif | |
97 | #define SUB_SEGMENT_ALIGN(SEG) max (section_alignment[(int) (SEG)], 4) | |
98 | ||
99 | /* We use a special alignment function to insert the correct nop | |
100 | pattern in .init. */ | |
71dd3c40 ILT |
101 | extern int m88k_do_align PARAMS ((int, const char *, int)); |
102 | #define md_do_align(n,fill,len,l) if (m88k_do_align(n,fill,len)) goto l | |
a75f31ce | 103 | |
c978e704 | 104 | #endif /* M88KCOFF */ |