Commit | Line | Data |
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252b5132 | 1 | /* tc-mips.h -- header file for tc-mips.c. |
a161fe53 | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002 |
82efde3a | 3 | Free Software Foundation, Inc. |
252b5132 RH |
4 | Contributed by the OSF and Ralph Campbell. |
5 | Written by Keith Knowles and Ralph Campbell, working independently. | |
6 | Modified for ECOFF support by Ian Lance Taylor of Cygnus Support. | |
7 | ||
8 | This file is part of GAS. | |
9 | ||
10 | GAS is free software; you can redistribute it and/or modify | |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2, or (at your option) | |
13 | any later version. | |
14 | ||
15 | GAS is distributed in the hope that it will be useful, | |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
19 | ||
20 | You should have received a copy of the GNU General Public License | |
21 | along with GAS; see the file COPYING. If not, write to the Free | |
22 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
23 | 02111-1307, USA. */ | |
24 | ||
25 | #ifndef TC_MIPS | |
26 | ||
27 | #define TC_MIPS | |
28 | ||
29 | #ifdef ANSI_PROTOTYPES | |
30 | struct frag; | |
31 | struct expressionS; | |
32 | #endif | |
33 | ||
34 | /* Default to big endian. */ | |
35 | #ifndef TARGET_BYTES_BIG_ENDIAN | |
36 | #define TARGET_BYTES_BIG_ENDIAN 1 | |
37 | #endif | |
38 | ||
39 | #define TARGET_ARCH bfd_arch_mips | |
40 | ||
252b5132 RH |
41 | #define WORKING_DOT_WORD 1 |
42 | #define OLD_FLOAT_READS | |
43 | #define REPEAT_CONS_EXPRESSIONS | |
44 | #define RELOC_EXPANSION_POSSIBLE | |
45 | #define MAX_RELOC_EXPANSION 3 | |
46 | #define LOCAL_LABELS_FB 1 | |
47 | ||
cdf6fd85 | 48 | /* Maximum symbol offset that can be encoded in a BFD_RELOC_GPREL16 |
252b5132 | 49 | relocation: */ |
e7d556df | 50 | #define MAX_GPREL_OFFSET (0x7FF0) |
252b5132 | 51 | |
c842b53a | 52 | #define md_relax_frag(segment, fragp, stretch) mips_relax_frag(fragp, stretch) |
252b5132 RH |
53 | extern int mips_relax_frag PARAMS ((struct frag *, long)); |
54 | ||
55 | #define md_undefined_symbol(name) (0) | |
56 | #define md_operand(x) | |
57 | ||
0a9ef439 RH |
58 | extern void mips_handle_align PARAMS ((struct frag *)); |
59 | #define HANDLE_ALIGN(fragp) mips_handle_align (fragp) | |
60 | ||
61 | #define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2) | |
a19d8eb0 | 62 | |
252b5132 RH |
63 | /* We permit PC relative difference expressions when generating |
64 | embedded PIC code. */ | |
65 | #define DIFF_EXPR_OK | |
66 | ||
82efde3a | 67 | /* Tell assembler that we have an itbl_mips.h header file to include. */ |
252b5132 RH |
68 | #define HAVE_ITBL_CPU |
69 | ||
70 | /* The endianness of the target format may change based on command | |
71 | line arguments. */ | |
72 | #define TARGET_FORMAT mips_target_format() | |
73 | extern const char *mips_target_format PARAMS ((void)); | |
74 | ||
a161fe53 AM |
75 | /* MIPS PIC level. */ |
76 | ||
77 | enum mips_pic_level | |
78 | { | |
79 | /* Do not generate PIC code. */ | |
80 | NO_PIC, | |
81 | ||
82 | /* Generate PIC code as in the SVR4 MIPS ABI. */ | |
83 | SVR4_PIC, | |
84 | ||
85 | /* Generate PIC code without using a global offset table: the data | |
86 | segment has a maximum size of 64K, all data references are off | |
87 | the $gp register, and all text references are PC relative. This | |
88 | is used on some embedded systems. */ | |
89 | EMBEDDED_PIC | |
90 | }; | |
91 | ||
92 | extern enum mips_pic_level mips_pic; | |
93 | ||
252b5132 RH |
94 | struct mips_cl_insn |
95 | { | |
96 | unsigned long insn_opcode; | |
97 | const struct mips_opcode *insn_mo; | |
98 | /* The next two fields are used when generating mips16 code. */ | |
99 | boolean use_extend; | |
100 | unsigned short extend; | |
101 | }; | |
102 | ||
103 | extern int tc_get_register PARAMS ((int frame)); | |
104 | ||
e9670677 MR |
105 | #define md_after_parse_args() mips_after_parse_args() |
106 | extern void mips_after_parse_args PARAMS ((void)); | |
107 | ||
252b5132 RH |
108 | #define tc_init_after_args() mips_init_after_args() |
109 | extern void mips_init_after_args PARAMS ((void)); | |
110 | ||
111 | #define md_parse_long_option(arg) mips_parse_long_option (arg) | |
112 | extern int mips_parse_long_option PARAMS ((const char *)); | |
113 | ||
114 | #define tc_frob_label(sym) mips_define_label (sym) | |
49309057 | 115 | extern void mips_define_label PARAMS ((symbolS *)); |
252b5132 RH |
116 | |
117 | #define tc_frob_file_before_adjust() mips_frob_file_before_adjust () | |
118 | extern void mips_frob_file_before_adjust PARAMS ((void)); | |
119 | ||
a161fe53 | 120 | #define tc_frob_file_before_fix() mips_frob_file () |
252b5132 RH |
121 | extern void mips_frob_file PARAMS ((void)); |
122 | ||
123 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
124 | #define tc_frob_file_after_relocs mips_frob_file_after_relocs | |
125 | extern void mips_frob_file_after_relocs PARAMS ((void)); | |
126 | #endif | |
127 | ||
252b5132 RH |
128 | #define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp) |
129 | extern int mips_fix_adjustable PARAMS ((struct fix *)); | |
130 | ||
a161fe53 AM |
131 | /* Global syms must not be resolved, to support ELF shared libraries. |
132 | When generating embedded code, we don't have shared libs. */ | |
133 | #define EXTERN_FORCE_RELOC \ | |
134 | (OUTPUT_FLAVOR == bfd_target_elf_flavour \ | |
135 | && mips_pic != EMBEDDED_PIC) | |
136 | ||
252b5132 RH |
137 | /* When generating embedded PIC code we must keep PC relative |
138 | relocations. */ | |
97724570 | 139 | #define TC_FORCE_RELOCATION(FIX) mips_force_relocation (FIX) |
252b5132 RH |
140 | extern int mips_force_relocation PARAMS ((struct fix *)); |
141 | ||
97724570 AM |
142 | #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \ |
143 | (mips_force_relocation (FIX) \ | |
144 | || !SEG_NORMAL (SEG)) | |
145 | ||
252b5132 RH |
146 | /* Register mask variables. These are set by the MIPS assembly code |
147 | and used by ECOFF and possibly other object file formats. */ | |
148 | extern unsigned long mips_gprmask; | |
149 | extern unsigned long mips_cprmask[4]; | |
150 | ||
151 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
152 | ||
153 | #define elf_tc_final_processing mips_elf_final_processing | |
154 | extern void mips_elf_final_processing PARAMS ((void)); | |
155 | ||
156 | #define ELF_TC_SPECIAL_SECTIONS \ | |
157 | { ".sdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, \ | |
158 | { ".sbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, \ | |
159 | { ".lit4", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, \ | |
160 | { ".lit8", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, \ | |
161 | { ".ucode", SHT_MIPS_UCODE, 0 }, \ | |
162 | { ".mdebug", SHT_MIPS_DEBUG, 0 }, | |
163 | /* Other special sections not generated by the assembler: .reginfo, | |
164 | .liblist, .conflict, .gptab, .got, .dynamic, .rel.dyn. */ | |
165 | ||
166 | #endif | |
167 | ||
168 | extern void md_mips_end PARAMS ((void)); | |
169 | #define md_end() md_mips_end() | |
170 | ||
171 | #define USE_GLOBAL_POINTER_OPT (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \ | |
056350c6 | 172 | || OUTPUT_FLAVOR == bfd_target_coff_flavour \ |
252b5132 RH |
173 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) |
174 | ||
175 | extern void mips_pop_insert PARAMS ((void)); | |
176 | #define md_pop_insert() mips_pop_insert() | |
177 | ||
178 | extern void mips_flush_pending_output PARAMS ((void)); | |
179 | #define md_flush_pending_output mips_flush_pending_output | |
180 | ||
181 | extern void mips_enable_auto_align PARAMS ((void)); | |
182 | #define md_elf_section_change_hook() mips_enable_auto_align() | |
183 | ||
184 | #endif /* TC_MIPS */ |