gas/config/tc-mips.h

   1 /* tc-mips.h -- header file for tc-mips.c.
   2    Copyright (C) 1993, 1994, 1995, 1996, 1997 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 2, 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, 59 Temple Place - Suite 330, Boston, MA
  22    02111-1307, USA.  */
  23
  24 #ifndef TC_MIPS
  25
  26 #define TC_MIPS
  27
  28 /* Default to big endian.  */
  29 #ifndef TARGET_BYTES_BIG_ENDIAN
  30 #define TARGET_BYTES_BIG_ENDIAN         1
  31 #endif
  32
  33 #define TARGET_ARCH bfd_arch_mips
  34
  35 #define ONLY_STANDARD_ESCAPES
  36 #define WORKING_DOT_WORD        1
  37 #define OLD_FLOAT_READS
  38 #define REPEAT_CONS_EXPRESSIONS
  39 #define RELOC_EXPANSION_POSSIBLE
  40 #define MAX_RELOC_EXPANSION 3
  41 #define LOCAL_LABELS_FB 1
  42
  43 /* We don't want to define LOCAL_LABELS_DOLLAR, because $0 is really a
  44    reference to a register, not a label.  */
  45 #undef LOCAL_LABELS_DOLLAR
  46 #define LOCAL_LABELS_DOLLAR 0
  47
  48 /* Maximum symbol offset that can be encoded in a BFD_RELOC_MIPS_GPREL
  49    relocation: */
  50 #define MAX_GPREL_OFFSET (0x7FF4)
  51
  52 #define LOCAL_LABEL(name) mips_local_label (name)
  53 extern int mips_local_label PARAMS ((const char *));
  54
  55 #define md_relax_frag(fragp, stretch) mips_relax_frag(fragp, stretch)
  56 extern int mips_relax_frag PARAMS ((struct frag *, long));
  57
  58 #define md_undefined_symbol(name)       (0)
  59 #define md_operand(x)
  60
  61 /* We permit PC relative difference expressions when generating
  62    embedded PIC code.  */
  63 #define DIFF_EXPR_OK
  64
  65 /* The endianness of the target format may change based on command
  66    line arguments.  */
  67 #define TARGET_FORMAT mips_target_format()
  68 extern const char *mips_target_format ();
  69
  70 struct mips_cl_insn
  71 {
  72   unsigned long insn_opcode;
  73   const struct mips_opcode *insn_mo;
  74   /* The next two fields are used when generating mips16 code.  */
  75   boolean use_extend;
  76   unsigned short extend;
  77 };
  78
  79 extern int tc_get_register PARAMS ((int frame));
  80
  81 #define tc_init_after_args() mips_init_after_args()
  82 extern void mips_init_after_args PARAMS ((void));
  83
  84 #define md_parse_long_option(arg) mips_parse_long_option (arg)
  85 extern int mips_parse_long_option PARAMS ((const char *));
  86
  87 #define tc_frob_label(sym) mips_define_label (sym)
  88 extern void mips_define_label PARAMS ((struct symbol *));
  89
  90 #define tc_frob_file() mips_frob_file ()
  91 extern void mips_frob_file PARAMS ((void));
  92
  93 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
  94 #define tc_frob_file_after_relocs mips_frob_file_after_relocs
  95 extern void mips_frob_file_after_relocs PARAMS ((void));
  96 #endif
  97
  98 #define TC_CONS_FIX_NEW cons_fix_new_mips
  99 extern void cons_fix_new_mips ();
 100
 101 #define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp)
 102 extern int mips_fix_adjustable PARAMS ((struct fix *));
 103
 104 /* When generating embedded PIC code we must keep PC relative
 105    relocations.  */
 106 #define TC_FORCE_RELOCATION(fixp) mips_force_relocation (fixp)
 107 extern int mips_force_relocation ();
 108
 109 /* md_apply_fix sets fx_done correctly.  */
 110 #define TC_HANDLE_FX_DONE 1
 111
 112 /* Register mask variables.  These are set by the MIPS assembly code
 113    and used by ECOFF and possibly other object file formats.  */
 114 extern unsigned long mips_gprmask;
 115 extern unsigned long mips_cprmask[4];
 116
 117 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
 118
 119 #define elf_tc_final_processing mips_elf_final_processing
 120 extern void mips_elf_final_processing PARAMS ((void));
 121
 122 #define ELF_TC_SPECIAL_SECTIONS \
 123   { ".sdata",   SHT_PROGBITS,   SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL  }, \
 124   { ".sbss",    SHT_NOBITS,     SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL  }, \
 125   { ".lit4",    SHT_PROGBITS,   SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL  }, \
 126   { ".lit8",    SHT_PROGBITS,   SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL  }, \
 127   { ".ucode",   SHT_MIPS_UCODE, 0                                       }, \
 128   { ".mdebug",  SHT_MIPS_DEBUG, 0                                       },
 129 /* Other special sections not generated by the assembler: .reginfo,
 130    .liblist, .conflict, .gptab, .got, .dynamic, .rel.dyn.  */
 131
 132 #endif
 133
 134 extern void md_mips_end PARAMS ((void));
 135 #define md_end()        md_mips_end()
 136
 137 #define USE_GLOBAL_POINTER_OPT  (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \
 138                                  || OUTPUT_FLAVOR == bfd_target_elf_flavour)
 139
 140 extern void mips_pop_insert PARAMS ((void));
 141 #define md_pop_insert()         mips_pop_insert()
 142
 143 extern void mips_flush_pending_output PARAMS ((void));
 144 #define md_flush_pending_output mips_flush_pending_output
 145
 146 extern void mips_enable_auto_align PARAMS ((void));
 147 #define md_elf_section_change_hook()    mips_enable_auto_align()
 148
 149 #endif /* TC_MIPS */