Commit | Line | Data |
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252b5132 | 1 | /* tc-mips.h -- header file for tc-mips.c. |
1d3b2b27 | 2 | Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003 |
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 | |
252b5132 RH |
26 | #define TC_MIPS |
27 | ||
252b5132 RH |
28 | struct frag; |
29 | struct expressionS; | |
252b5132 RH |
30 | |
31 | /* Default to big endian. */ | |
32 | #ifndef TARGET_BYTES_BIG_ENDIAN | |
33 | #define TARGET_BYTES_BIG_ENDIAN 1 | |
34 | #endif | |
35 | ||
36 | #define TARGET_ARCH bfd_arch_mips | |
37 | ||
252b5132 RH |
38 | #define WORKING_DOT_WORD 1 |
39 | #define OLD_FLOAT_READS | |
40 | #define REPEAT_CONS_EXPRESSIONS | |
41 | #define RELOC_EXPANSION_POSSIBLE | |
42 | #define MAX_RELOC_EXPANSION 3 | |
43 | #define LOCAL_LABELS_FB 1 | |
44 | ||
cdf6fd85 | 45 | /* Maximum symbol offset that can be encoded in a BFD_RELOC_GPREL16 |
c344a4c8 | 46 | relocation. */ |
e7d556df | 47 | #define MAX_GPREL_OFFSET (0x7FF0) |
252b5132 | 48 | |
4a6a3df4 AO |
49 | #define md_relax_frag(segment, fragp, stretch) \ |
50 | mips_relax_frag(segment, fragp, stretch) | |
17a2f251 | 51 | extern int mips_relax_frag (asection *, struct frag *, long); |
252b5132 RH |
52 | |
53 | #define md_undefined_symbol(name) (0) | |
54 | #define md_operand(x) | |
55 | ||
17a2f251 | 56 | extern void mips_handle_align (struct frag *); |
0a9ef439 RH |
57 | #define HANDLE_ALIGN(fragp) mips_handle_align (fragp) |
58 | ||
59 | #define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2) | |
a19d8eb0 | 60 | |
252b5132 RH |
61 | /* We permit PC relative difference expressions when generating |
62 | embedded PIC code. */ | |
63 | #define DIFF_EXPR_OK | |
64 | ||
82efde3a | 65 | /* Tell assembler that we have an itbl_mips.h header file to include. */ |
252b5132 RH |
66 | #define HAVE_ITBL_CPU |
67 | ||
68 | /* The endianness of the target format may change based on command | |
69 | line arguments. */ | |
70 | #define TARGET_FORMAT mips_target_format() | |
17a2f251 | 71 | extern const char *mips_target_format (void); |
252b5132 | 72 | |
a161fe53 AM |
73 | /* MIPS PIC level. */ |
74 | ||
75 | enum mips_pic_level | |
76 | { | |
77 | /* Do not generate PIC code. */ | |
78 | NO_PIC, | |
79 | ||
80 | /* Generate PIC code as in the SVR4 MIPS ABI. */ | |
81 | SVR4_PIC, | |
82 | ||
83 | /* Generate PIC code without using a global offset table: the data | |
84 | segment has a maximum size of 64K, all data references are off | |
85 | the $gp register, and all text references are PC relative. This | |
86 | is used on some embedded systems. */ | |
87 | EMBEDDED_PIC | |
88 | }; | |
89 | ||
90 | extern enum mips_pic_level mips_pic; | |
91 | ||
252b5132 RH |
92 | struct mips_cl_insn |
93 | { | |
94 | unsigned long insn_opcode; | |
95 | const struct mips_opcode *insn_mo; | |
96 | /* The next two fields are used when generating mips16 code. */ | |
b34976b6 | 97 | bfd_boolean use_extend; |
252b5132 RH |
98 | unsigned short extend; |
99 | }; | |
100 | ||
17a2f251 | 101 | extern int tc_get_register (int frame); |
252b5132 | 102 | |
e9670677 | 103 | #define md_after_parse_args() mips_after_parse_args() |
17a2f251 | 104 | extern void mips_after_parse_args (void); |
e9670677 | 105 | |
252b5132 | 106 | #define tc_init_after_args() mips_init_after_args() |
17a2f251 | 107 | extern void mips_init_after_args (void); |
252b5132 RH |
108 | |
109 | #define md_parse_long_option(arg) mips_parse_long_option (arg) | |
17a2f251 | 110 | extern int mips_parse_long_option (const char *); |
252b5132 RH |
111 | |
112 | #define tc_frob_label(sym) mips_define_label (sym) | |
17a2f251 | 113 | extern void mips_define_label (symbolS *); |
252b5132 RH |
114 | |
115 | #define tc_frob_file_before_adjust() mips_frob_file_before_adjust () | |
17a2f251 | 116 | extern void mips_frob_file_before_adjust (void); |
252b5132 | 117 | |
a161fe53 | 118 | #define tc_frob_file_before_fix() mips_frob_file () |
17a2f251 | 119 | extern void mips_frob_file (void); |
252b5132 RH |
120 | |
121 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
122 | #define tc_frob_file_after_relocs mips_frob_file_after_relocs | |
17a2f251 | 123 | extern void mips_frob_file_after_relocs (void); |
252b5132 RH |
124 | #endif |
125 | ||
252b5132 | 126 | #define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp) |
17a2f251 | 127 | extern int mips_fix_adjustable (struct fix *); |
252b5132 | 128 | |
a7ebbfdf TS |
129 | /* Values passed to md_apply_fix3 don't include symbol values. */ |
130 | #define MD_APPLY_SYM_VALUE(FIX) 0 | |
131 | ||
a161fe53 AM |
132 | /* Global syms must not be resolved, to support ELF shared libraries. |
133 | When generating embedded code, we don't have shared libs. */ | |
134 | #define EXTERN_FORCE_RELOC \ | |
135 | (OUTPUT_FLAVOR == bfd_target_elf_flavour \ | |
136 | && mips_pic != EMBEDDED_PIC) | |
137 | ||
252b5132 RH |
138 | /* When generating embedded PIC code we must keep PC relative |
139 | relocations. */ | |
97724570 | 140 | #define TC_FORCE_RELOCATION(FIX) mips_force_relocation (FIX) |
17a2f251 | 141 | extern int mips_force_relocation (struct fix *); |
252b5132 | 142 | |
a38b42ab TS |
143 | #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \ |
144 | (! SEG_NORMAL (SEG) || mips_force_relocation (FIX)) | |
145 | ||
45f8dfe8 AO |
146 | /* We use this to turn branches to global symbols into branches to |
147 | local symbols, so that they can be simplified. */ | |
148 | #define TC_VALIDATE_FIX(fixp, this_segment, skip_label) \ | |
149 | do \ | |
150 | if (! mips_validate_fix ((fixp), (this_segment))) \ | |
151 | goto skip_label; \ | |
152 | while (0) | |
17a2f251 | 153 | extern int mips_validate_fix (struct fix *, asection *); |
45f8dfe8 | 154 | |
252b5132 RH |
155 | /* Register mask variables. These are set by the MIPS assembly code |
156 | and used by ECOFF and possibly other object file formats. */ | |
157 | extern unsigned long mips_gprmask; | |
158 | extern unsigned long mips_cprmask[4]; | |
159 | ||
160 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
161 | ||
162 | #define elf_tc_final_processing mips_elf_final_processing | |
17a2f251 | 163 | extern void mips_elf_final_processing (void); |
252b5132 | 164 | |
252b5132 RH |
165 | #endif |
166 | ||
17a2f251 | 167 | extern void md_mips_end (void); |
252b5132 RH |
168 | #define md_end() md_mips_end() |
169 | ||
170 | #define USE_GLOBAL_POINTER_OPT (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \ | |
056350c6 | 171 | || OUTPUT_FLAVOR == bfd_target_coff_flavour \ |
252b5132 RH |
172 | || OUTPUT_FLAVOR == bfd_target_elf_flavour) |
173 | ||
17a2f251 | 174 | extern void mips_pop_insert (void); |
252b5132 RH |
175 | #define md_pop_insert() mips_pop_insert() |
176 | ||
17a2f251 | 177 | extern void mips_flush_pending_output (void); |
252b5132 RH |
178 | #define md_flush_pending_output mips_flush_pending_output |
179 | ||
17a2f251 | 180 | extern void mips_enable_auto_align (void); |
252b5132 RH |
181 | #define md_elf_section_change_hook() mips_enable_auto_align() |
182 | ||
17a2f251 | 183 | extern enum dwarf2_format mips_dwarf2_format (void); |
14e777e0 KB |
184 | #define DWARF2_FORMAT() mips_dwarf2_format () |
185 | ||
9605f328 AO |
186 | #define DWARF2_ADDR_SIZE(bfd) \ |
187 | (DWARF2_FORMAT () == dwarf2_format_32bit ? 4 : 8) | |
188 | ||
f5040a92 AO |
189 | typedef struct { |
190 | offsetT tc_fr_offset; | |
191 | } tc_frag_data_type; | |
192 | #define TC_FRAG_TYPE tc_frag_data_type | |
193 | ||
252b5132 | 194 | #endif /* TC_MIPS */ |