1 /* tc-mips.h -- header file for tc-mips.c.
2 Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002
3 Free Software Foundation, Inc.
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.
8 This file is part of GAS.
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)
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.
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
29 #ifdef ANSI_PROTOTYPES
34 /* Default to big endian. */
35 #ifndef TARGET_BYTES_BIG_ENDIAN
36 #define TARGET_BYTES_BIG_ENDIAN 1
39 #define TARGET_ARCH bfd_arch_mips
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
48 /* Maximum symbol offset that can be encoded in a BFD_RELOC_GPREL16
50 #define MAX_GPREL_OFFSET (0x7FF0)
52 #define md_relax_frag(segment, fragp, stretch) \
53 mips_relax_frag(segment, fragp, stretch)
54 extern int mips_relax_frag
PARAMS ((asection
*, struct frag
*, long));
56 #define md_undefined_symbol(name) (0)
59 extern void mips_handle_align
PARAMS ((struct frag
*));
60 #define HANDLE_ALIGN(fragp) mips_handle_align (fragp)
62 #define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2)
64 /* We permit PC relative difference expressions when generating
68 /* Tell assembler that we have an itbl_mips.h header file to include. */
71 /* The endianness of the target format may change based on command
73 #define TARGET_FORMAT mips_target_format()
74 extern const char *mips_target_format
PARAMS ((void));
80 /* Do not generate PIC code. */
83 /* Generate PIC code as in the SVR4 MIPS ABI. */
86 /* Generate PIC code without using a global offset table: the data
87 segment has a maximum size of 64K, all data references are off
88 the $gp register, and all text references are PC relative. This
89 is used on some embedded systems. */
93 extern enum mips_pic_level mips_pic
;
97 unsigned long insn_opcode
;
98 const struct mips_opcode
*insn_mo
;
99 /* The next two fields are used when generating mips16 code. */
100 bfd_boolean use_extend
;
101 unsigned short extend
;
104 extern int tc_get_register
PARAMS ((int frame
));
106 #define md_after_parse_args() mips_after_parse_args()
107 extern void mips_after_parse_args
PARAMS ((void));
109 #define tc_init_after_args() mips_init_after_args()
110 extern void mips_init_after_args
PARAMS ((void));
112 #define md_parse_long_option(arg) mips_parse_long_option (arg)
113 extern int mips_parse_long_option
PARAMS ((const char *));
115 #define tc_frob_label(sym) mips_define_label (sym)
116 extern void mips_define_label
PARAMS ((symbolS
*));
118 #define tc_frob_file_before_adjust() mips_frob_file_before_adjust ()
119 extern void mips_frob_file_before_adjust
PARAMS ((void));
121 #define tc_frob_file_before_fix() mips_frob_file ()
122 extern void mips_frob_file
PARAMS ((void));
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
PARAMS ((void));
129 #define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp)
130 extern int mips_fix_adjustable
PARAMS ((struct fix
*));
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)
138 /* When generating embedded PIC code we must keep PC relative
140 #define TC_FORCE_RELOCATION(FIX) mips_force_relocation (FIX)
141 extern int mips_force_relocation
PARAMS ((struct fix
*));
143 #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
144 (mips_force_relocation (FIX) \
145 || !SEG_NORMAL (SEG))
147 /* Register mask variables. These are set by the MIPS assembly code
148 and used by ECOFF and possibly other object file formats. */
149 extern unsigned long mips_gprmask
;
150 extern unsigned long mips_cprmask
[4];
152 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
154 #define elf_tc_final_processing mips_elf_final_processing
155 extern void mips_elf_final_processing
PARAMS ((void));
157 #define ELF_TC_SPECIAL_SECTIONS \
158 { ".sdata", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, \
159 { ".sbss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, \
160 { ".lit4", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, \
161 { ".lit8", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL }, \
162 { ".ucode", SHT_MIPS_UCODE, 0 }, \
163 { ".mdebug", SHT_MIPS_DEBUG, 0 },
164 /* Other special sections not generated by the assembler: .reginfo,
165 .liblist, .conflict, .gptab, .got, .dynamic, .rel.dyn. */
169 extern void md_mips_end
PARAMS ((void));
170 #define md_end() md_mips_end()
172 #define USE_GLOBAL_POINTER_OPT (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \
173 || OUTPUT_FLAVOR == bfd_target_coff_flavour \
174 || OUTPUT_FLAVOR == bfd_target_elf_flavour)
176 extern void mips_pop_insert
PARAMS ((void));
177 #define md_pop_insert() mips_pop_insert()
179 extern void mips_flush_pending_output
PARAMS ((void));
180 #define md_flush_pending_output mips_flush_pending_output
182 extern void mips_enable_auto_align
PARAMS ((void));
183 #define md_elf_section_change_hook() mips_enable_auto_align()
185 extern enum dwarf2_format mips_dwarf2_format
PARAMS ((void));
186 #define DWARF2_FORMAT() mips_dwarf2_format ()
188 #define DWARF2_ADDR_SIZE(bfd) \
189 (DWARF2_FORMAT () == dwarf2_format_32bit ? 4 : 8)