gas/config/tc-mips.h

   1 /* tc-mips.h -- header file for tc-mips.c.
   2    Copyright (C) 1993, 94, 95, 96, 97, 1999, 2000 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 #ifdef ANSI_PROTOTYPES
  29 struct frag;
  30 struct expressionS;
  31 #endif
  32
  33 /* Default to big endian.  */
  34 #ifndef TARGET_BYTES_BIG_ENDIAN
  35 #define TARGET_BYTES_BIG_ENDIAN         1
  36 #endif
  37
  38 #define TARGET_ARCH bfd_arch_mips
  39
  40 #define WORKING_DOT_WORD        1
  41 #define OLD_FLOAT_READS
  42 #define REPEAT_CONS_EXPRESSIONS
  43 #define RELOC_EXPANSION_POSSIBLE
  44 #define MAX_RELOC_EXPANSION 3
  45 #define LOCAL_LABELS_FB 1
  46
  47 /* Maximum symbol offset that can be encoded in a BFD_RELOC_MIPS_GPREL
  48    relocation: */
  49 #define MAX_GPREL_OFFSET (0x7FF4)
  50
  51 #define md_relax_frag(fragp, stretch) mips_relax_frag(fragp, stretch)
  52 extern int mips_relax_frag PARAMS ((struct frag *, long));
  53
  54 #define md_undefined_symbol(name)       (0)
  55 #define md_operand(x)
  56
  57 extern int mips_do_align PARAMS ((int, const char *, int, int));
  58 #define md_do_align(n,fill,len,max,l) if (mips_do_align (n,fill,len,max)) goto l
  59
  60 /* We permit PC relative difference expressions when generating
  61    embedded PIC code.  */
  62 #define DIFF_EXPR_OK
  63
  64 /* Tell assembler that we have an itbl_mips.h header file to include. */
  65 #define HAVE_ITBL_CPU
  66
  67 /* The endianness of the target format may change based on command
  68    line arguments.  */
  69 #define TARGET_FORMAT mips_target_format()
  70 extern const char *mips_target_format PARAMS ((void));
  71
  72 struct mips_cl_insn
  73 {
  74   unsigned long insn_opcode;
  75   const struct mips_opcode *insn_mo;
  76   /* The next two fields are used when generating mips16 code.  */
  77   boolean use_extend;
  78   unsigned short extend;
  79 };
  80
  81 extern int tc_get_register PARAMS ((int frame));
  82
  83 #define tc_init_after_args() mips_init_after_args()
  84 extern void mips_init_after_args PARAMS ((void));
  85
  86 #define md_parse_long_option(arg) mips_parse_long_option (arg)
  87 extern int mips_parse_long_option PARAMS ((const char *));
  88
  89 #define tc_frob_label(sym) mips_define_label (sym)
  90 extern void mips_define_label PARAMS ((symbolS *));
  91
  92 #define tc_frob_file_before_adjust() mips_frob_file_before_adjust ()
  93 extern void mips_frob_file_before_adjust PARAMS ((void));
  94
  95 #define tc_frob_file() mips_frob_file ()
  96 extern void mips_frob_file PARAMS ((void));
  97
  98 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
  99 #define tc_frob_file_after_relocs mips_frob_file_after_relocs
 100 extern void mips_frob_file_after_relocs PARAMS ((void));
 101 #endif
 102
 103 #define TC_CONS_FIX_NEW cons_fix_new_mips
 104 extern void cons_fix_new_mips
 105   PARAMS ((struct frag *, int, unsigned int, struct expressionS *));
 106
 107 #define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp)
 108 extern int mips_fix_adjustable PARAMS ((struct fix *));
 109
 110 /* When generating embedded PIC code we must keep PC relative
 111    relocations.  */
 112 #define TC_FORCE_RELOCATION(fixp) mips_force_relocation (fixp)
 113 extern int mips_force_relocation PARAMS ((struct fix *));
 114
 115 /* md_apply_fix sets fx_done correctly.  */
 116 #define TC_HANDLE_FX_DONE 1
 117
 118 /* Register mask variables.  These are set by the MIPS assembly code
 119    and used by ECOFF and possibly other object file formats.  */
 120 extern unsigned long mips_gprmask;
 121 extern unsigned long mips_cprmask[4];
 122
 123 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
 124
 125 #define elf_tc_final_processing mips_elf_final_processing
 126 extern void mips_elf_final_processing PARAMS ((void));
 127
 128 #define ELF_TC_SPECIAL_SECTIONS \
 129   { ".sdata",   SHT_PROGBITS,   SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL  }, \
 130   { ".sbss",    SHT_NOBITS,     SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL  }, \
 131   { ".lit4",    SHT_PROGBITS,   SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL  }, \
 132   { ".lit8",    SHT_PROGBITS,   SHF_ALLOC + SHF_WRITE + SHF_MIPS_GPREL  }, \
 133   { ".ucode",   SHT_MIPS_UCODE, 0                                       }, \
 134   { ".mdebug",  SHT_MIPS_DEBUG, 0                                       },
 135 /* Other special sections not generated by the assembler: .reginfo,
 136    .liblist, .conflict, .gptab, .got, .dynamic, .rel.dyn.  */
 137
 138 #endif
 139
 140 extern void md_mips_end PARAMS ((void));
 141 #define md_end()        md_mips_end()
 142
 143 #define USE_GLOBAL_POINTER_OPT  (OUTPUT_FLAVOR == bfd_target_ecoff_flavour \
 144                                  || OUTPUT_FLAVOR == bfd_target_coff_flavour \
 145                                  || OUTPUT_FLAVOR == bfd_target_elf_flavour)
 146
 147 extern void mips_pop_insert PARAMS ((void));
 148 #define md_pop_insert()         mips_pop_insert()
 149
 150 extern void mips_flush_pending_output PARAMS ((void));
 151 #define md_flush_pending_output mips_flush_pending_output
 152
 153 extern void mips_enable_auto_align PARAMS ((void));
 154 #define md_elf_section_change_hook()    mips_enable_auto_align()
 155
 156 #endif /* TC_MIPS */