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252b5132 | 1 | /* tc-mips.h -- header file for tc-mips.c. |
6f2750fe | 2 | Copyright (C) 1993-2016 Free Software Foundation, Inc. |
252b5132 RH |
3 | Contributed by the OSF and Ralph Campbell. |
4 | Written by Keith Knowles and Ralph Campbell, working independently. | |
5 | Modified for ECOFF support by Ian Lance Taylor of Cygnus Support. | |
6 | ||
7 | This file is part of GAS. | |
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 | |
ec2655a6 | 11 | the Free Software Foundation; either version 3, or (at your option) |
252b5132 RH |
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 | |
4b4da160 NC |
21 | Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA |
22 | 02110-1301, USA. */ | |
252b5132 RH |
23 | |
24 | #ifndef TC_MIPS | |
252b5132 RH |
25 | #define TC_MIPS |
26 | ||
252b5132 RH |
27 | struct frag; |
28 | struct expressionS; | |
252b5132 RH |
29 | |
30 | /* Default to big endian. */ | |
31 | #ifndef TARGET_BYTES_BIG_ENDIAN | |
32 | #define TARGET_BYTES_BIG_ENDIAN 1 | |
33 | #endif | |
34 | ||
35 | #define TARGET_ARCH bfd_arch_mips | |
36 | ||
252b5132 RH |
37 | #define WORKING_DOT_WORD 1 |
38 | #define OLD_FLOAT_READS | |
39 | #define REPEAT_CONS_EXPRESSIONS | |
40 | #define RELOC_EXPANSION_POSSIBLE | |
41 | #define MAX_RELOC_EXPANSION 3 | |
42 | #define LOCAL_LABELS_FB 1 | |
43 | ||
3ae8dd8d MR |
44 | #define TC_ADDRESS_BYTES mips_address_bytes |
45 | extern int mips_address_bytes (void); | |
46 | ||
cdf6fd85 | 47 | /* Maximum symbol offset that can be encoded in a BFD_RELOC_GPREL16 |
c344a4c8 | 48 | relocation. */ |
e7d556df | 49 | #define MAX_GPREL_OFFSET (0x7FF0) |
252b5132 | 50 | |
4a6a3df4 AO |
51 | #define md_relax_frag(segment, fragp, stretch) \ |
52 | mips_relax_frag(segment, fragp, stretch) | |
17a2f251 | 53 | extern int mips_relax_frag (asection *, struct frag *, long); |
252b5132 RH |
54 | |
55 | #define md_undefined_symbol(name) (0) | |
56 | #define md_operand(x) | |
57 | ||
742a56fe RS |
58 | extern char mips_nop_opcode (void); |
59 | #define NOP_OPCODE (mips_nop_opcode ()) | |
60 | ||
17a2f251 | 61 | extern void mips_handle_align (struct frag *); |
0a9ef439 RH |
62 | #define HANDLE_ALIGN(fragp) mips_handle_align (fragp) |
63 | ||
c67a084a | 64 | #define MAX_MEM_FOR_RS_ALIGN_CODE (3 + 4) |
a19d8eb0 | 65 | |
a8dbcb85 | 66 | struct insn_label_list; |
742a56fe RS |
67 | struct mips_segment_info { |
68 | struct insn_label_list *labels; | |
69 | unsigned int mips16 : 1; | |
df58fc94 | 70 | unsigned int micromips : 1; |
742a56fe RS |
71 | }; |
72 | #define TC_SEGMENT_INFO_TYPE struct mips_segment_info | |
a8dbcb85 | 73 | |
b314ec0e RS |
74 | /* This field is nonzero if the symbol is the target of a MIPS16 jump. */ |
75 | #define TC_SYMFIELD_TYPE int | |
76 | ||
82efde3a | 77 | /* Tell assembler that we have an itbl_mips.h header file to include. */ |
252b5132 RH |
78 | #define HAVE_ITBL_CPU |
79 | ||
80 | /* The endianness of the target format may change based on command | |
81 | line arguments. */ | |
82 | #define TARGET_FORMAT mips_target_format() | |
17a2f251 | 83 | extern const char *mips_target_format (void); |
252b5132 | 84 | |
a161fe53 AM |
85 | /* MIPS PIC level. */ |
86 | ||
87 | enum mips_pic_level | |
88 | { | |
89 | /* Do not generate PIC code. */ | |
90 | NO_PIC, | |
91 | ||
92 | /* Generate PIC code as in the SVR4 MIPS ABI. */ | |
93 | SVR4_PIC, | |
0a44bf69 RS |
94 | |
95 | /* VxWorks's PIC model. */ | |
96 | VXWORKS_PIC | |
a161fe53 AM |
97 | }; |
98 | ||
99 | extern enum mips_pic_level mips_pic; | |
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 | 114 | |
e1b47bd5 RS |
115 | #define tc_new_dot_label(sym) mips_add_dot_label (sym) |
116 | extern void mips_add_dot_label (symbolS *); | |
a1facbec | 117 | |
252b5132 | 118 | #define tc_frob_file_before_adjust() mips_frob_file_before_adjust () |
17a2f251 | 119 | extern void mips_frob_file_before_adjust (void); |
252b5132 | 120 | |
a161fe53 | 121 | #define tc_frob_file_before_fix() mips_frob_file () |
17a2f251 | 122 | extern void mips_frob_file (void); |
252b5132 RH |
123 | |
124 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
125 | #define tc_frob_file_after_relocs mips_frob_file_after_relocs | |
17a2f251 | 126 | extern void mips_frob_file_after_relocs (void); |
252b5132 RH |
127 | #endif |
128 | ||
252b5132 | 129 | #define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp) |
17a2f251 | 130 | extern int mips_fix_adjustable (struct fix *); |
252b5132 | 131 | |
55cf6793 | 132 | /* Values passed to md_apply_fix don't include symbol values. */ |
a7ebbfdf TS |
133 | #define MD_APPLY_SYM_VALUE(FIX) 0 |
134 | ||
3e722fb5 | 135 | /* Global syms must not be resolved, to support ELF shared libraries. */ |
a161fe53 | 136 | #define EXTERN_FORCE_RELOC \ |
3e722fb5 | 137 | (OUTPUT_FLAVOR == bfd_target_elf_flavour) |
a161fe53 | 138 | |
97724570 | 139 | #define TC_FORCE_RELOCATION(FIX) mips_force_relocation (FIX) |
17a2f251 | 140 | extern int mips_force_relocation (struct fix *); |
252b5132 | 141 | |
a38b42ab TS |
142 | #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \ |
143 | (! SEG_NORMAL (SEG) || mips_force_relocation (FIX)) | |
144 | ||
b416ba9b MR |
145 | #define TC_FORCE_RELOCATION_ABS(FIX) mips_force_relocation_abs (FIX) |
146 | extern bfd_boolean mips_force_relocation_abs (struct fix *); | |
147 | ||
252b5132 RH |
148 | /* Register mask variables. These are set by the MIPS assembly code |
149 | and used by ECOFF and possibly other object file formats. */ | |
150 | extern unsigned long mips_gprmask; | |
151 | extern unsigned long mips_cprmask[4]; | |
152 | ||
153 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) | |
154 | ||
155 | #define elf_tc_final_processing mips_elf_final_processing | |
17a2f251 | 156 | extern void mips_elf_final_processing (void); |
252b5132 | 157 | |
252b5132 RH |
158 | #endif |
159 | ||
17a2f251 | 160 | extern void md_mips_end (void); |
252b5132 RH |
161 | #define md_end() md_mips_end() |
162 | ||
17a2f251 | 163 | extern void mips_pop_insert (void); |
252b5132 RH |
164 | #define md_pop_insert() mips_pop_insert() |
165 | ||
7d10b47d RS |
166 | extern void mips_emit_delays (void); |
167 | #define md_flush_pending_output mips_emit_delays | |
252b5132 | 168 | |
17a2f251 | 169 | extern void mips_enable_auto_align (void); |
252b5132 RH |
170 | #define md_elf_section_change_hook() mips_enable_auto_align() |
171 | ||
1575952e | 172 | #ifdef TE_IRIX |
8d79fd44 | 173 | enum dwarf2_format; |
413a266c | 174 | extern enum dwarf2_format mips_dwarf2_format (asection *); |
1575952e TS |
175 | # define DWARF2_FORMAT(SEC) mips_dwarf2_format (SEC) |
176 | #else | |
177 | /* Use GAS' defaults. */ | |
178 | #endif | |
14e777e0 | 179 | |
558fe4a7 | 180 | extern int mips_dwarf2_addr_size (void); |
73369e65 | 181 | #define DWARF2_ADDR_SIZE(bfd) mips_dwarf2_addr_size () |
2f0c68f2 CM |
182 | #define DWARF2_FDE_RELOC_SIZE (compact_eh ? 4 : mips_dwarf2_addr_size ()) |
183 | #define DWARF2_FDE_RELOC_ENCODING(enc) \ | |
184 | (enc | (compact_eh ? DW_EH_PE_pcrel : 0)) | |
9605f328 | 185 | |
5862107c EC |
186 | #define TARGET_USE_CFIPOP 1 |
187 | ||
188 | #define tc_cfi_frame_initial_instructions mips_cfi_frame_initial_instructions | |
189 | extern void mips_cfi_frame_initial_instructions (void); | |
190 | ||
707bfff6 TS |
191 | #define tc_regname_to_dw2regnum tc_mips_regname_to_dw2regnum |
192 | extern int tc_mips_regname_to_dw2regnum (char *regname); | |
193 | ||
5862107c | 194 | #define DWARF2_DEFAULT_RETURN_COLUMN 31 |
8d79fd44 | 195 | #define DWARF2_CIE_DATA_ALIGNMENT (-4) |
5862107c | 196 | |
2f0c68f2 CM |
197 | #if defined(OBJ_ELF) |
198 | ||
199 | #define tc_cfi_reloc_for_encoding mips_cfi_reloc_for_encoding | |
200 | extern bfd_reloc_code_real_type mips_cfi_reloc_for_encoding (int encoding); | |
201 | ||
202 | #define tc_compact_eh_opcode_stop 0x5c | |
203 | #define tc_compact_eh_opcode_pad 0x5f | |
204 | ||
205 | #endif | |
d56a8dda RS |
206 | #define DIFF_EXPR_OK |
207 | /* We define DIFF_EXPR_OK because of R_MIPS_PC32, but we have no | |
208 | 64-bit form for n64 CFIs. */ | |
209 | #define CFI_DIFF_EXPR_OK 0 | |
210 | ||
263b2574 | 211 | #define CONVERT_SYMBOLIC_ATTRIBUTE(name) mips_convert_symbolic_attribute (name) |
212 | extern int mips_convert_symbolic_attribute (const char *); | |
213 | ||
252b5132 | 214 | #endif /* TC_MIPS */ |