| 1 | /* tc-mips.h -- header file for tc-mips.c. |
| 2 | Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003, 2004, |
| 3 | 2005, 2006, 2007, 2008 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. |
| 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 3, 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, 51 Franklin Street - Fifth Floor, Boston, MA |
| 23 | 02110-1301, USA. */ |
| 24 | |
| 25 | #ifndef TC_MIPS |
| 26 | #define TC_MIPS |
| 27 | |
| 28 | struct frag; |
| 29 | struct expressionS; |
| 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 | |
| 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 | |
| 45 | /* Maximum symbol offset that can be encoded in a BFD_RELOC_GPREL16 |
| 46 | relocation. */ |
| 47 | #define MAX_GPREL_OFFSET (0x7FF0) |
| 48 | |
| 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); |
| 52 | |
| 53 | #define md_undefined_symbol(name) (0) |
| 54 | #define md_operand(x) |
| 55 | |
| 56 | extern char mips_nop_opcode (void); |
| 57 | #define NOP_OPCODE (mips_nop_opcode ()) |
| 58 | |
| 59 | extern void mips_handle_align (struct frag *); |
| 60 | #define HANDLE_ALIGN(fragp) mips_handle_align (fragp) |
| 61 | |
| 62 | #define MAX_MEM_FOR_RS_ALIGN_CODE (1 + 2) |
| 63 | |
| 64 | struct insn_label_list; |
| 65 | struct mips_segment_info { |
| 66 | struct insn_label_list *labels; |
| 67 | unsigned int mips16 : 1; |
| 68 | }; |
| 69 | #define TC_SEGMENT_INFO_TYPE struct mips_segment_info |
| 70 | |
| 71 | /* This field is nonzero if the symbol is the target of a MIPS16 jump. */ |
| 72 | #define TC_SYMFIELD_TYPE int |
| 73 | |
| 74 | /* Tell assembler that we have an itbl_mips.h header file to include. */ |
| 75 | #define HAVE_ITBL_CPU |
| 76 | |
| 77 | /* The endianness of the target format may change based on command |
| 78 | line arguments. */ |
| 79 | #define TARGET_FORMAT mips_target_format() |
| 80 | extern const char *mips_target_format (void); |
| 81 | |
| 82 | /* MIPS PIC level. */ |
| 83 | |
| 84 | enum mips_pic_level |
| 85 | { |
| 86 | /* Do not generate PIC code. */ |
| 87 | NO_PIC, |
| 88 | |
| 89 | /* Generate PIC code as in the SVR4 MIPS ABI. */ |
| 90 | SVR4_PIC, |
| 91 | |
| 92 | /* VxWorks's PIC model. */ |
| 93 | VXWORKS_PIC |
| 94 | }; |
| 95 | |
| 96 | extern enum mips_pic_level mips_pic; |
| 97 | |
| 98 | extern int tc_get_register (int frame); |
| 99 | |
| 100 | #define md_after_parse_args() mips_after_parse_args() |
| 101 | extern void mips_after_parse_args (void); |
| 102 | |
| 103 | #define tc_init_after_args() mips_init_after_args() |
| 104 | extern void mips_init_after_args (void); |
| 105 | |
| 106 | #define md_parse_long_option(arg) mips_parse_long_option (arg) |
| 107 | extern int mips_parse_long_option (const char *); |
| 108 | |
| 109 | #define tc_frob_label(sym) mips_define_label (sym) |
| 110 | extern void mips_define_label (symbolS *); |
| 111 | |
| 112 | #define tc_frob_file_before_adjust() mips_frob_file_before_adjust () |
| 113 | extern void mips_frob_file_before_adjust (void); |
| 114 | |
| 115 | #define tc_frob_file_before_fix() mips_frob_file () |
| 116 | extern void mips_frob_file (void); |
| 117 | |
| 118 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
| 119 | #define tc_frob_file_after_relocs mips_frob_file_after_relocs |
| 120 | extern void mips_frob_file_after_relocs (void); |
| 121 | #endif |
| 122 | |
| 123 | #define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp) |
| 124 | extern int mips_fix_adjustable (struct fix *); |
| 125 | |
| 126 | /* Values passed to md_apply_fix don't include symbol values. */ |
| 127 | #define MD_APPLY_SYM_VALUE(FIX) 0 |
| 128 | |
| 129 | /* Global syms must not be resolved, to support ELF shared libraries. */ |
| 130 | #define EXTERN_FORCE_RELOC \ |
| 131 | (OUTPUT_FLAVOR == bfd_target_elf_flavour) |
| 132 | |
| 133 | /* When generating NEWABI code, we may need to have to keep combined |
| 134 | relocations which don't have symbols. */ |
| 135 | #define TC_FORCE_RELOCATION(FIX) mips_force_relocation (FIX) |
| 136 | extern int mips_force_relocation (struct fix *); |
| 137 | |
| 138 | #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \ |
| 139 | (! SEG_NORMAL (SEG) || mips_force_relocation (FIX)) |
| 140 | |
| 141 | /* Register mask variables. These are set by the MIPS assembly code |
| 142 | and used by ECOFF and possibly other object file formats. */ |
| 143 | extern unsigned long mips_gprmask; |
| 144 | extern unsigned long mips_cprmask[4]; |
| 145 | |
| 146 | #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF) |
| 147 | |
| 148 | #define elf_tc_final_processing mips_elf_final_processing |
| 149 | extern void mips_elf_final_processing (void); |
| 150 | |
| 151 | #endif |
| 152 | |
| 153 | extern void md_mips_end (void); |
| 154 | #define md_end() md_mips_end() |
| 155 | |
| 156 | extern void mips_pop_insert (void); |
| 157 | #define md_pop_insert() mips_pop_insert() |
| 158 | |
| 159 | extern void mips_emit_delays (void); |
| 160 | #define md_flush_pending_output mips_emit_delays |
| 161 | |
| 162 | extern void mips_enable_auto_align (void); |
| 163 | #define md_elf_section_change_hook() mips_enable_auto_align() |
| 164 | |
| 165 | enum dwarf2_format; |
| 166 | extern enum dwarf2_format mips_dwarf2_format (asection *); |
| 167 | #define DWARF2_FORMAT(SEC) mips_dwarf2_format (SEC) |
| 168 | |
| 169 | extern int mips_dwarf2_addr_size (void); |
| 170 | #define DWARF2_ADDR_SIZE(bfd) mips_dwarf2_addr_size () |
| 171 | #define DWARF2_FDE_RELOC_SIZE mips_dwarf2_addr_size () |
| 172 | |
| 173 | #define TARGET_USE_CFIPOP 1 |
| 174 | |
| 175 | #define tc_cfi_frame_initial_instructions mips_cfi_frame_initial_instructions |
| 176 | extern void mips_cfi_frame_initial_instructions (void); |
| 177 | |
| 178 | #define tc_regname_to_dw2regnum tc_mips_regname_to_dw2regnum |
| 179 | extern int tc_mips_regname_to_dw2regnum (char *regname); |
| 180 | |
| 181 | #define DWARF2_DEFAULT_RETURN_COLUMN 31 |
| 182 | #define DWARF2_CIE_DATA_ALIGNMENT (-4) |
| 183 | |
| 184 | #endif /* TC_MIPS */ |