gas/config/tc-mips.h

   1 /* tc-mips.h -- header file for tc-mips.c.
   2    Copyright 1993, 1994, 1995, 1996, 1997, 2000, 2001, 2002, 2003, 2004
   3    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 2, 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 void mips_handle_align (struct frag *);
  57 #define HANDLE_ALIGN(fragp)  mips_handle_align (fragp)
  58
  59 #define MAX_MEM_FOR_RS_ALIGN_CODE  (1 + 2)
  60
  61 /* Tell assembler that we have an itbl_mips.h header file to include.  */
  62 #define HAVE_ITBL_CPU
  63
  64 /* The endianness of the target format may change based on command
  65    line arguments.  */
  66 #define TARGET_FORMAT mips_target_format()
  67 extern const char *mips_target_format (void);
  68
  69 /* MIPS PIC level.  */
  70
  71 enum mips_pic_level
  72 {
  73   /* Do not generate PIC code.  */
  74   NO_PIC,
  75
  76   /* Generate PIC code as in the SVR4 MIPS ABI.  */
  77   SVR4_PIC,
  78 };
  79
  80 extern enum mips_pic_level mips_pic;
  81
  82 extern int tc_get_register (int frame);
  83
  84 #define md_after_parse_args() mips_after_parse_args()
  85 extern void mips_after_parse_args (void);
  86
  87 #define tc_init_after_args() mips_init_after_args()
  88 extern void mips_init_after_args (void);
  89
  90 #define md_parse_long_option(arg) mips_parse_long_option (arg)
  91 extern int mips_parse_long_option (const char *);
  92
  93 #define tc_frob_label(sym) mips_define_label (sym)
  94 extern void mips_define_label (symbolS *);
  95
  96 #define tc_frob_file_before_adjust() mips_frob_file_before_adjust ()
  97 extern void mips_frob_file_before_adjust (void);
  98
  99 #define tc_frob_file_before_fix() mips_frob_file ()
 100 extern void mips_frob_file (void);
 101
 102 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
 103 #define tc_frob_file_after_relocs mips_frob_file_after_relocs
 104 extern void mips_frob_file_after_relocs (void);
 105 #endif
 106
 107 #define tc_fix_adjustable(fixp) mips_fix_adjustable (fixp)
 108 extern int mips_fix_adjustable (struct fix *);
 109
 110 /* Values passed to md_apply_fix3 don't include symbol values.  */
 111 #define MD_APPLY_SYM_VALUE(FIX) 0
 112
 113 /* Global syms must not be resolved, to support ELF shared libraries.  */
 114 #define EXTERN_FORCE_RELOC                      \
 115   (OUTPUT_FLAVOR == bfd_target_elf_flavour)
 116
 117 /* When generating NEWABI code, we may need to have to keep combined
 118    relocations which don't have symbols.  */
 119 #define TC_FORCE_RELOCATION(FIX) mips_force_relocation (FIX)
 120 extern int mips_force_relocation (struct fix *);
 121
 122 #define TC_FORCE_RELOCATION_SUB_SAME(FIX, SEG) \
 123   (! SEG_NORMAL (SEG) || mips_force_relocation (FIX))
 124
 125 /* We use this to turn branches to global symbols into branches to
 126    local symbols, so that they can be simplified.  */
 127 #define TC_VALIDATE_FIX(fixp, this_segment, skip_label) \
 128   do \
 129     if (! mips_validate_fix ((fixp), (this_segment))) \
 130       goto skip_label; \
 131   while (0)
 132 extern int mips_validate_fix (struct fix *, asection *);
 133
 134 /* Register mask variables.  These are set by the MIPS assembly code
 135    and used by ECOFF and possibly other object file formats.  */
 136 extern unsigned long mips_gprmask;
 137 extern unsigned long mips_cprmask[4];
 138
 139 #if defined (OBJ_ELF) || defined (OBJ_MAYBE_ELF)
 140
 141 #define elf_tc_final_processing mips_elf_final_processing
 142 extern void mips_elf_final_processing (void);
 143
 144 #endif
 145
 146 extern void md_mips_end (void);
 147 #define md_end()        md_mips_end()
 148
 149 extern void mips_pop_insert (void);
 150 #define md_pop_insert()         mips_pop_insert()
 151
 152 extern void mips_emit_delays (void);
 153 #define md_flush_pending_output mips_emit_delays
 154
 155 extern void mips_enable_auto_align (void);
 156 #define md_elf_section_change_hook()    mips_enable_auto_align()
 157
 158 extern enum dwarf2_format mips_dwarf2_format (void);
 159 #define DWARF2_FORMAT() mips_dwarf2_format ()
 160
 161 extern int mips_dwarf2_addr_size (void);
 162 #define DWARF2_ADDR_SIZE(bfd) mips_dwarf2_addr_size ()
 163
 164 #define TARGET_USE_CFIPOP 1
 165
 166 #define tc_cfi_frame_initial_instructions mips_cfi_frame_initial_instructions
 167 extern void mips_cfi_frame_initial_instructions (void);
 168
 169 #define DWARF2_DEFAULT_RETURN_COLUMN 31
 170 #define DWARF2_CIE_DATA_ALIGNMENT -4
 171
 172 #endif /* TC_MIPS */