1 /* tc-mips.h -- header file for tc-mips.c.
2 Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003
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
31 /* Default to big endian. */
32 #ifndef TARGET_BYTES_BIG_ENDIAN
33 #define TARGET_BYTES_BIG_ENDIAN 1
36 #define TARGET_ARCH bfd_arch_mips
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
45 /* Maximum symbol offset that can be encoded in a BFD_RELOC_GPREL16
47 #define MAX_GPREL_OFFSET (0x7FF0)
49 #define md_relax_frag(segment, fragp, stretch) \
50 mips_relax_frag(segment, fragp, stretch)
51 extern int mips_relax_frag (asection
*, struct frag
*, long);
53 #define md_undefined_symbol(name) (0)
56 extern void mips_handle_align (struct frag
*);
57 #define HANDLE_ALIGN(fragp) mips_handle_align (fragp)
59 #define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2)
61 /* We permit PC relative difference expressions when generating
65 /* Tell assembler that we have an itbl_mips.h header file to include. */
68 /* The endianness of the target format may change based on command
70 #define TARGET_FORMAT mips_target_format()
71 extern const char *mips_target_format (void);
77 /* Do not generate PIC code. */
80 /* Generate PIC code as in the SVR4 MIPS ABI. */
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. */
90 extern enum mips_pic_level mips_pic
;
94 unsigned long insn_opcode
;
95 const struct mips_opcode
*insn_mo
;
96 /* The next two fields are used when generating mips16 code. */
97 bfd_boolean use_extend
;
98 unsigned short extend
;
101 extern int tc_get_register (int frame
);
103 #define md_after_parse_args() mips_after_parse_args()
104 extern void mips_after_parse_args (void);
106 #define tc_init_after_args() mips_init_after_args()
107 extern void mips_init_after_args (void);
109 #define md_parse_long_option(arg) mips_parse_long_option (arg)
110 extern int mips_parse_long_option (const char *);
112 #define tc_frob_label(sym) mips_define_label (sym)
113 extern void mips_define_label (symbolS
*);
115 #define tc_frob_file_before_adjust() mips_frob_file_before_adjust ()
116 extern void mips_frob_file_before_adjust (void);
118 #define tc_frob_file_before_fix() mips_frob_file ()
119 extern void mips_frob_file (void);
121 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
122 #define tc_frob_file_after_relocs mips_frob_file_after_relocs
123 extern void mips_frob_file_after_relocs (void);
126 #define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp)
127 extern int mips_fix_adjustable (struct fix
*);
129 /* Values passed to md_apply_fix3 don't include symbol values. */
130 #define MD_APPLY_SYM_VALUE(FIX) 0
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 (struct fix
*);
143 #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
144 (! SEG_NORMAL (SEG) || mips_force_relocation (FIX))
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) \
150 if (! mips_validate_fix ((fixp), (this_segment))) \
153 extern int mips_validate_fix (struct fix
*, asection
*);
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];
160 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
162 #define elf_tc_final_processing mips_elf_final_processing
163 extern void mips_elf_final_processing (void);
167 extern void md_mips_end (void);
168 #define md_end() md_mips_end()
170 #define USE_GLOBAL_POINTER_OPT (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \
171 || OUTPUT_FLAVOR == bfd_target_coff_flavour \
172 || OUTPUT_FLAVOR == bfd_target_elf_flavour)
174 extern void mips_pop_insert (void);
175 #define md_pop_insert() mips_pop_insert()
177 extern void mips_flush_pending_output (void);
178 #define md_flush_pending_output mips_flush_pending_output
180 extern void mips_enable_auto_align (void);
181 #define md_elf_section_change_hook() mips_enable_auto_align()
183 extern enum dwarf2_format
mips_dwarf2_format (void);
184 #define DWARF2_FORMAT() mips_dwarf2_format ()
186 #define DWARF2_ADDR_SIZE(bfd) \
187 (DWARF2_FORMAT () == dwarf2_format_32bit ? 4 : 8)
190 offsetT tc_fr_offset
;
192 #define TC_FRAG_TYPE tc_frag_data_type