gas/config/tc-mips.h

   1 /* tc-mips.h -- header file for tc-mips.c.
   2    Copyright (C) 1993-2018 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   (GENERIC_FORCE_RELOCATION_SUB_SAME (FIX, SEG) \
 144    || mips_force_relocation (FIX))
 145
 146 #define TC_FORCE_RELOCATION_ABS(FIX) mips_force_relocation_abs (FIX)
 147 extern bfd_boolean mips_force_relocation_abs (struct fix *);
 148
 149 /* Register mask variables.  These are set by the MIPS assembly code
 150    and used by ECOFF and possibly other object file formats.  */
 151 extern unsigned long mips_gprmask;
 152 extern unsigned long mips_cprmask[4];
 153
 154 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
 155
 156 #define elf_tc_final_processing mips_elf_final_processing
 157 extern void mips_elf_final_processing (void);
 158
 159 #endif
 160
 161 extern void md_mips_end (void);
 162 #define md_end()        md_mips_end()
 163
 164 extern void mips_pop_insert (void);
 165 #define md_pop_insert()         mips_pop_insert()
 166
 167 extern void mips_emit_delays (void);
 168 #define md_flush_pending_output mips_emit_delays
 169
 170 extern void mips_enable_auto_align (void);
 171 #define md_elf_section_change_hook()    mips_enable_auto_align()
 172
 173 #ifdef TE_IRIX
 174 enum dwarf2_format;
 175 extern enum dwarf2_format mips_dwarf2_format (asection *);
 176 # define DWARF2_FORMAT(SEC) mips_dwarf2_format (SEC)
 177 #else
 178 /* Use GAS' defaults.  */
 179 #endif
 180
 181 extern int mips_dwarf2_addr_size (void);
 182 #define DWARF2_ADDR_SIZE(bfd) mips_dwarf2_addr_size ()
 183 #define DWARF2_FDE_RELOC_SIZE (compact_eh ? 4 : mips_dwarf2_addr_size ())
 184 #define DWARF2_FDE_RELOC_ENCODING(enc) \
 185   (enc | (compact_eh ? DW_EH_PE_pcrel : 0))
 186
 187 #define TARGET_USE_CFIPOP 1
 188
 189 #define tc_cfi_frame_initial_instructions mips_cfi_frame_initial_instructions
 190 extern void mips_cfi_frame_initial_instructions (void);
 191
 192 #define tc_regname_to_dw2regnum tc_mips_regname_to_dw2regnum
 193 extern int tc_mips_regname_to_dw2regnum (char *regname);
 194
 195 #define DWARF2_DEFAULT_RETURN_COLUMN 31
 196 #define DWARF2_CIE_DATA_ALIGNMENT (-4)
 197
 198 #if defined(OBJ_ELF)
 199
 200 #define tc_cfi_reloc_for_encoding mips_cfi_reloc_for_encoding
 201 extern bfd_reloc_code_real_type mips_cfi_reloc_for_encoding (int encoding);
 202
 203 #define tc_compact_eh_opcode_stop 0x5c
 204 #define tc_compact_eh_opcode_pad 0x5f
 205
 206 #endif
 207 #define DIFF_EXPR_OK
 208 /* We define DIFF_EXPR_OK because of R_MIPS_PC32, but we have no
 209    64-bit form for n64 CFIs.  */
 210 #define CFI_DIFF_EXPR_OK 0
 211
 212 #define CONVERT_SYMBOLIC_ATTRIBUTE(name) mips_convert_symbolic_attribute (name)
 213 extern int mips_convert_symbolic_attribute (const char *);
 214
 215 #endif /* TC_MIPS */