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1 /* tc-mips.h -- header file for tc-mips.c.
2    Copyright (C) 1993-2014 Free Software Foundation, Inc.
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
11    the Free Software Foundation; either version 3, 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 the Free
21    Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA
22    02110-1301, USA.  */
23 
24 #ifndef TC_MIPS
25 #define TC_MIPS
26 
27 struct frag;
28 struct expressionS;
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 
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 
44 #define TC_ADDRESS_BYTES mips_address_bytes
45 extern int mips_address_bytes (void);
46 
47 /* Maximum symbol offset that can be encoded in a BFD_RELOC_GPREL16
48    relocation.  */
49 #define MAX_GPREL_OFFSET (0x7FF0)
50 
51 #define md_relax_frag(segment, fragp, stretch) \
52   mips_relax_frag(segment, fragp, stretch)
53 extern int mips_relax_frag (asection *, struct frag *, long);
54 
55 #define md_undefined_symbol(name)	(0)
56 #define md_operand(x)
57 
58 extern char mips_nop_opcode (void);
59 #define NOP_OPCODE (mips_nop_opcode ())
60 
61 extern void mips_handle_align (struct frag *);
62 #define HANDLE_ALIGN(fragp)  mips_handle_align (fragp)
63 
64 #define MAX_MEM_FOR_RS_ALIGN_CODE  (3 + 4)
65 
66 struct insn_label_list;
67 struct mips_segment_info {
68   struct insn_label_list *labels;
69   unsigned int mips16 : 1;
70   unsigned int micromips : 1;
71 };
72 #define TC_SEGMENT_INFO_TYPE struct mips_segment_info
73 
74 /* This field is nonzero if the symbol is the target of a MIPS16 jump.  */
75 #define TC_SYMFIELD_TYPE int
76 
77 /* Tell assembler that we have an itbl_mips.h header file to include.  */
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()
83 extern const char *mips_target_format (void);
84 
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,
94 
95   /* VxWorks's PIC model.  */
96   VXWORKS_PIC
97 };
98 
99 extern enum mips_pic_level mips_pic;
100 
101 extern int tc_get_register (int frame);
102 
103 #define md_after_parse_args() mips_after_parse_args()
104 extern void mips_after_parse_args (void);
105 
106 #define tc_init_after_args() mips_init_after_args()
107 extern void mips_init_after_args (void);
108 
109 #define md_parse_long_option(arg) mips_parse_long_option (arg)
110 extern int mips_parse_long_option (const char *);
111 
112 #define tc_frob_label(sym) mips_define_label (sym)
113 extern void mips_define_label (symbolS *);
114 
115 #define tc_new_dot_label(sym) mips_add_dot_label (sym)
116 extern void mips_add_dot_label (symbolS *);
117 
118 #define tc_frob_file_before_adjust() mips_frob_file_before_adjust ()
119 extern void mips_frob_file_before_adjust (void);
120 
121 #define tc_frob_file_before_fix() mips_frob_file ()
122 extern void mips_frob_file (void);
123 
124 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
125 #define tc_frob_file_after_relocs mips_frob_file_after_relocs
126 extern void mips_frob_file_after_relocs (void);
127 #endif
128 
129 #define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp)
130 extern int mips_fix_adjustable (struct fix *);
131 
132 /* Values passed to md_apply_fix don't include symbol values.  */
133 #define MD_APPLY_SYM_VALUE(FIX) 0
134 
135 /* Global syms must not be resolved, to support ELF shared libraries.  */
136 #define EXTERN_FORCE_RELOC			\
137   (OUTPUT_FLAVOR == bfd_target_elf_flavour)
138 
139 #define TC_FORCE_RELOCATION(FIX) mips_force_relocation (FIX)
140 extern int mips_force_relocation (struct fix *);
141 
142 #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
143   (! SEG_NORMAL (SEG) || mips_force_relocation (FIX))
144 
145 /* Register mask variables.  These are set by the MIPS assembly code
146    and used by ECOFF and possibly other object file formats.  */
147 extern unsigned long mips_gprmask;
148 extern unsigned long mips_cprmask[4];
149 
150 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
151 
152 #define elf_tc_final_processing mips_elf_final_processing
153 extern void mips_elf_final_processing (void);
154 
155 #endif
156 
157 extern void md_mips_end (void);
158 #define md_end()	md_mips_end()
159 
160 extern void mips_pop_insert (void);
161 #define md_pop_insert()		mips_pop_insert()
162 
163 extern void mips_emit_delays (void);
164 #define md_flush_pending_output mips_emit_delays
165 
166 extern void mips_enable_auto_align (void);
167 #define md_elf_section_change_hook()	mips_enable_auto_align()
168 
169 #ifdef TE_IRIX
170 enum dwarf2_format;
171 extern enum dwarf2_format mips_dwarf2_format (asection *);
172 # define DWARF2_FORMAT(SEC) mips_dwarf2_format (SEC)
173 #else
174 /* Use GAS' defaults.  */
175 #endif
176 
177 extern int mips_dwarf2_addr_size (void);
178 #define DWARF2_ADDR_SIZE(bfd) mips_dwarf2_addr_size ()
179 #define DWARF2_FDE_RELOC_SIZE mips_dwarf2_addr_size ()
180 
181 #define TARGET_USE_CFIPOP 1
182 
183 #define tc_cfi_frame_initial_instructions mips_cfi_frame_initial_instructions
184 extern void mips_cfi_frame_initial_instructions (void);
185 
186 #define tc_regname_to_dw2regnum tc_mips_regname_to_dw2regnum
187 extern int tc_mips_regname_to_dw2regnum (char *regname);
188 
189 #define DWARF2_DEFAULT_RETURN_COLUMN 31
190 #define DWARF2_CIE_DATA_ALIGNMENT (-4)
191 
192 #define DIFF_EXPR_OK
193 /* We define DIFF_EXPR_OK because of R_MIPS_PC32, but we have no
194    64-bit form for n64 CFIs.  */
195 #define CFI_DIFF_EXPR_OK 0
196 
197 #define CONVERT_SYMBOLIC_ATTRIBUTE(name) mips_convert_symbolic_attribute (name)
198 extern int mips_convert_symbolic_attribute (const char *);
199 
200 #endif /* TC_MIPS */
201