1 /* tc-mips.h -- header file for tc-mips.c. 2 Copyright (C) 1993-2016 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 (compact_eh ? 4 : mips_dwarf2_addr_size ()) 180 #define DWARF2_FDE_RELOC_ENCODING(enc) \ 181 (enc | (compact_eh ? DW_EH_PE_pcrel : 0)) 182 183 #define TARGET_USE_CFIPOP 1 184 185 #define tc_cfi_frame_initial_instructions mips_cfi_frame_initial_instructions 186 extern void mips_cfi_frame_initial_instructions (void); 187 188 #define tc_regname_to_dw2regnum tc_mips_regname_to_dw2regnum 189 extern int tc_mips_regname_to_dw2regnum (char *regname); 190 191 #define DWARF2_DEFAULT_RETURN_COLUMN 31 192 #define DWARF2_CIE_DATA_ALIGNMENT (-4) 193 194 #if defined(OBJ_ELF) 195 196 #define tc_cfi_reloc_for_encoding mips_cfi_reloc_for_encoding 197 extern bfd_reloc_code_real_type mips_cfi_reloc_for_encoding (int encoding); 198 199 #define tc_compact_eh_opcode_stop 0x5c 200 #define tc_compact_eh_opcode_pad 0x5f 201 202 #endif 203 #define DIFF_EXPR_OK 204 /* We define DIFF_EXPR_OK because of R_MIPS_PC32, but we have no 205 64-bit form for n64 CFIs. */ 206 #define CFI_DIFF_EXPR_OK 0 207 208 #define CONVERT_SYMBOLIC_ATTRIBUTE(name) mips_convert_symbolic_attribute (name) 209 extern int mips_convert_symbolic_attribute (const char *); 210 211 #endif /* TC_MIPS */ 212
